drivers/scsi/qla4xxx/ql4_os.c

   1 /*
   2  * QLogic iSCSI HBA Driver
   3  * Copyright (c)  2003-2013 QLogic Corporation
   4  *
   5  * See LICENSE.qla4xxx for copyright and licensing details.
   6  */
   7 #include <linux/moduleparam.h>
   8 #include <linux/slab.h>
   9 #include <linux/blkdev.h>
  10 #include <linux/iscsi_boot_sysfs.h>
  11 #include <linux/inet.h>
  12
  13 #include <scsi/scsi_tcq.h>
  14 #include <scsi/scsicam.h>
  15
  16 #include "ql4_def.h"
  17 #include "ql4_version.h"
  18 #include "ql4_glbl.h"
  19 #include "ql4_dbg.h"
  20 #include "ql4_inline.h"
  21 #include "ql4_83xx.h"
  22
  23 /*
  24  * Driver version
  25  */
  26 static char qla4xxx_version_str[40];
  27
  28 /*
  29  * SRB allocation cache
  30  */
  31 static struct kmem_cache *srb_cachep;
  32
  33 /*
  34  * Module parameter information and variables
  35  */
  36 static int ql4xdisablesysfsboot = 1;
  37 module_param(ql4xdisablesysfsboot, int, S_IRUGO | S_IWUSR);
  38 MODULE_PARM_DESC(ql4xdisablesysfsboot,
  39                  " Set to disable exporting boot targets to sysfs.\n"
  40                  "\t\t  0 - Export boot targets\n"
  41                  "\t\t  1 - Do not export boot targets (Default)");
  42
  43 int ql4xdontresethba;
  44 module_param(ql4xdontresethba, int, S_IRUGO | S_IWUSR);
  45 MODULE_PARM_DESC(ql4xdontresethba,
  46                  " Don't reset the HBA for driver recovery.\n"
  47                  "\t\t  0 - It will reset HBA (Default)\n"
  48                  "\t\t  1 - It will NOT reset HBA");
  49
  50 int ql4xextended_error_logging;
  51 module_param(ql4xextended_error_logging, int, S_IRUGO | S_IWUSR);
  52 MODULE_PARM_DESC(ql4xextended_error_logging,
  53                  " Option to enable extended error logging.\n"
  54                  "\t\t  0 - no logging (Default)\n"
  55                  "\t\t  2 - debug logging");
  56
  57 int ql4xenablemsix = 1;
  58 module_param(ql4xenablemsix, int, S_IRUGO|S_IWUSR);
  59 MODULE_PARM_DESC(ql4xenablemsix,
  60                  " Set to enable MSI or MSI-X interrupt mechanism.\n"
  61                  "\t\t  0 = enable INTx interrupt mechanism.\n"
  62                  "\t\t  1 = enable MSI-X interrupt mechanism (Default).\n"
  63                  "\t\t  2 = enable MSI interrupt mechanism.");
  64
  65 #define QL4_DEF_QDEPTH 32
  66 static int ql4xmaxqdepth = QL4_DEF_QDEPTH;
  67 module_param(ql4xmaxqdepth, int, S_IRUGO | S_IWUSR);
  68 MODULE_PARM_DESC(ql4xmaxqdepth,
  69                  " Maximum queue depth to report for target devices.\n"
  70                  "\t\t  Default: 32.");
  71
  72 static int ql4xqfulltracking = 1;
  73 module_param(ql4xqfulltracking, int, S_IRUGO | S_IWUSR);
  74 MODULE_PARM_DESC(ql4xqfulltracking,
  75                  " Enable or disable dynamic tracking and adjustment of\n"
  76                  "\t\t scsi device queue depth.\n"
  77                  "\t\t  0 - Disable.\n"
  78                  "\t\t  1 - Enable. (Default)");
  79
  80 static int ql4xsess_recovery_tmo = QL4_SESS_RECOVERY_TMO;
  81 module_param(ql4xsess_recovery_tmo, int, S_IRUGO);
  82 MODULE_PARM_DESC(ql4xsess_recovery_tmo,
  83                 " Target Session Recovery Timeout.\n"
  84                 "\t\t  Default: 120 sec.");
  85
  86 int ql4xmdcapmask = 0;
  87 module_param(ql4xmdcapmask, int, S_IRUGO);
  88 MODULE_PARM_DESC(ql4xmdcapmask,
  89                  " Set the Minidump driver capture mask level.\n"
  90                  "\t\t  Default is 0 (firmware default capture mask)\n"
  91                  "\t\t  Can be set to 0x3, 0x7, 0xF, 0x1F, 0x3F, 0x7F, 0xFF");
  92
  93 int ql4xenablemd = 1;
  94 module_param(ql4xenablemd, int, S_IRUGO | S_IWUSR);
  95 MODULE_PARM_DESC(ql4xenablemd,
  96                  " Set to enable minidump.\n"
  97                  "\t\t  0 - disable minidump\n"
  98                  "\t\t  1 - enable minidump (Default)");
  99
 100 static int qla4xxx_wait_for_hba_online(struct scsi_qla_host *ha);
 101 /*
 102  * SCSI host template entry points
 103  */
 104 static void qla4xxx_config_dma_addressing(struct scsi_qla_host *ha);
 105
 106 /*
 107  * iSCSI template entry points
 108  */
 109 static int qla4xxx_session_get_param(struct iscsi_cls_session *cls_sess,
 110                                      enum iscsi_param param, char *buf);
 111 static int qla4xxx_conn_get_param(struct iscsi_cls_conn *conn,
 112                                   enum iscsi_param param, char *buf);
 113 static int qla4xxx_host_get_param(struct Scsi_Host *shost,
 114                                   enum iscsi_host_param param, char *buf);
 115 static int qla4xxx_iface_set_param(struct Scsi_Host *shost, void *data,
 116                                    uint32_t len);
 117 static int qla4xxx_get_iface_param(struct iscsi_iface *iface,
 118                                    enum iscsi_param_type param_type,
 119                                    int param, char *buf);
 120 static enum blk_eh_timer_return qla4xxx_eh_cmd_timed_out(struct scsi_cmnd *sc);
 121 static struct iscsi_endpoint *qla4xxx_ep_connect(struct Scsi_Host *shost,
 122                                                  struct sockaddr *dst_addr,
 123                                                  int non_blocking);
 124 static int qla4xxx_ep_poll(struct iscsi_endpoint *ep, int timeout_ms);
 125 static void qla4xxx_ep_disconnect(struct iscsi_endpoint *ep);
 126 static int qla4xxx_get_ep_param(struct iscsi_endpoint *ep,
 127                                 enum iscsi_param param, char *buf);
 128 static int qla4xxx_conn_start(struct iscsi_cls_conn *conn);
 129 static struct iscsi_cls_conn *
 130 qla4xxx_conn_create(struct iscsi_cls_session *cls_sess, uint32_t conn_idx);
 131 static int qla4xxx_conn_bind(struct iscsi_cls_session *cls_session,
 132                              struct iscsi_cls_conn *cls_conn,
 133                              uint64_t transport_fd, int is_leading);
 134 static void qla4xxx_conn_destroy(struct iscsi_cls_conn *conn);
 135 static struct iscsi_cls_session *
 136 qla4xxx_session_create(struct iscsi_endpoint *ep, uint16_t cmds_max,
 137                         uint16_t qdepth, uint32_t initial_cmdsn);
 138 static void qla4xxx_session_destroy(struct iscsi_cls_session *sess);
 139 static void qla4xxx_task_work(struct work_struct *wdata);
 140 static int qla4xxx_alloc_pdu(struct iscsi_task *, uint8_t);
 141 static int qla4xxx_task_xmit(struct iscsi_task *);
 142 static void qla4xxx_task_cleanup(struct iscsi_task *);
 143 static void qla4xxx_fail_session(struct iscsi_cls_session *cls_session);
 144 static void qla4xxx_conn_get_stats(struct iscsi_cls_conn *cls_conn,
 145                                    struct iscsi_stats *stats);
 146 static int qla4xxx_send_ping(struct Scsi_Host *shost, uint32_t iface_num,
 147                              uint32_t iface_type, uint32_t payload_size,
 148                              uint32_t pid, struct sockaddr *dst_addr);
 149 static int qla4xxx_get_chap_list(struct Scsi_Host *shost, uint16_t chap_tbl_idx,
 150                                  uint32_t *num_entries, char *buf);
 151 static int qla4xxx_delete_chap(struct Scsi_Host *shost, uint16_t chap_tbl_idx);
 152 static int qla4xxx_set_chap_entry(struct Scsi_Host *shost, void  *data,
 153                                   int len);
 154 static int qla4xxx_get_host_stats(struct Scsi_Host *shost, char *buf, int len);
 155
 156 /*
 157  * SCSI host template entry points
 158  */
 159 static int qla4xxx_queuecommand(struct Scsi_Host *h, struct scsi_cmnd *cmd);
 160 static int qla4xxx_eh_abort(struct scsi_cmnd *cmd);
 161 static int qla4xxx_eh_device_reset(struct scsi_cmnd *cmd);
 162 static int qla4xxx_eh_target_reset(struct scsi_cmnd *cmd);
 163 static int qla4xxx_eh_host_reset(struct scsi_cmnd *cmd);
 164 static int qla4xxx_slave_alloc(struct scsi_device *device);
 165 static umode_t qla4_attr_is_visible(int param_type, int param);
 166 static int qla4xxx_host_reset(struct Scsi_Host *shost, int reset_type);
 167
 168 /*
 169  * iSCSI Flash DDB sysfs entry points
 170  */
 171 static int
 172 qla4xxx_sysfs_ddb_set_param(struct iscsi_bus_flash_session *fnode_sess,
 173                             struct iscsi_bus_flash_conn *fnode_conn,
 174                             void *data, int len);
 175 static int
 176 qla4xxx_sysfs_ddb_get_param(struct iscsi_bus_flash_session *fnode_sess,
 177                             int param, char *buf);
 178 static int qla4xxx_sysfs_ddb_add(struct Scsi_Host *shost, const char *buf,
 179                                  int len);
 180 static int
 181 qla4xxx_sysfs_ddb_delete(struct iscsi_bus_flash_session *fnode_sess);
 182 static int qla4xxx_sysfs_ddb_login(struct iscsi_bus_flash_session *fnode_sess,
 183                                    struct iscsi_bus_flash_conn *fnode_conn);
 184 static int qla4xxx_sysfs_ddb_logout(struct iscsi_bus_flash_session *fnode_sess,
 185                                     struct iscsi_bus_flash_conn *fnode_conn);
 186 static int qla4xxx_sysfs_ddb_logout_sid(struct iscsi_cls_session *cls_sess);
 187
 188 static struct qla4_8xxx_legacy_intr_set legacy_intr[] =
 189     QLA82XX_LEGACY_INTR_CONFIG;
 190
 191 static const uint32_t qla4_82xx_reg_tbl[] = {
 192         QLA82XX_PEG_HALT_STATUS1,
 193         QLA82XX_PEG_HALT_STATUS2,
 194         QLA82XX_PEG_ALIVE_COUNTER,
 195         QLA82XX_CRB_DRV_ACTIVE,
 196         QLA82XX_CRB_DEV_STATE,
 197         QLA82XX_CRB_DRV_STATE,
 198         QLA82XX_CRB_DRV_SCRATCH,
 199         QLA82XX_CRB_DEV_PART_INFO,
 200         QLA82XX_CRB_DRV_IDC_VERSION,
 201         QLA82XX_FW_VERSION_MAJOR,
 202         QLA82XX_FW_VERSION_MINOR,
 203         QLA82XX_FW_VERSION_SUB,
 204         CRB_CMDPEG_STATE,
 205         CRB_TEMP_STATE,
 206 };
 207
 208 static const uint32_t qla4_83xx_reg_tbl[] = {
 209         QLA83XX_PEG_HALT_STATUS1,
 210         QLA83XX_PEG_HALT_STATUS2,
 211         QLA83XX_PEG_ALIVE_COUNTER,
 212         QLA83XX_CRB_DRV_ACTIVE,
 213         QLA83XX_CRB_DEV_STATE,
 214         QLA83XX_CRB_DRV_STATE,
 215         QLA83XX_CRB_DRV_SCRATCH,
 216         QLA83XX_CRB_DEV_PART_INFO1,
 217         QLA83XX_CRB_IDC_VER_MAJOR,
 218         QLA83XX_FW_VER_MAJOR,
 219         QLA83XX_FW_VER_MINOR,
 220         QLA83XX_FW_VER_SUB,
 221         QLA83XX_CMDPEG_STATE,
 222         QLA83XX_ASIC_TEMP,
 223 };
 224
 225 static struct scsi_host_template qla4xxx_driver_template = {
 226         .module                 = THIS_MODULE,
 227         .name                   = DRIVER_NAME,
 228         .proc_name              = DRIVER_NAME,
 229         .queuecommand           = qla4xxx_queuecommand,
 230
 231         .eh_abort_handler       = qla4xxx_eh_abort,
 232         .eh_device_reset_handler = qla4xxx_eh_device_reset,
 233         .eh_target_reset_handler = qla4xxx_eh_target_reset,
 234         .eh_host_reset_handler  = qla4xxx_eh_host_reset,
 235         .eh_timed_out           = qla4xxx_eh_cmd_timed_out,
 236
 237         .slave_alloc            = qla4xxx_slave_alloc,
 238         .change_queue_depth     = scsi_change_queue_depth,
 239
 240         .this_id                = -1,
 241         .cmd_per_lun            = 3,
 242         .sg_tablesize           = SG_ALL,
 243
 244         .max_sectors            = 0xFFFF,
 245         .shost_attrs            = qla4xxx_host_attrs,
 246         .host_reset             = qla4xxx_host_reset,
 247         .vendor_id              = SCSI_NL_VID_TYPE_PCI | PCI_VENDOR_ID_QLOGIC,
 248 };
 249
 250 static struct iscsi_transport qla4xxx_iscsi_transport = {
 251         .owner                  = THIS_MODULE,
 252         .name                   = DRIVER_NAME,
 253         .caps                   = CAP_TEXT_NEGO |
 254                                   CAP_DATA_PATH_OFFLOAD | CAP_HDRDGST |
 255                                   CAP_DATADGST | CAP_LOGIN_OFFLOAD |
 256                                   CAP_MULTI_R2T,
 257         .attr_is_visible        = qla4_attr_is_visible,
 258         .create_session         = qla4xxx_session_create,
 259         .destroy_session        = qla4xxx_session_destroy,
 260         .start_conn             = qla4xxx_conn_start,
 261         .create_conn            = qla4xxx_conn_create,
 262         .bind_conn              = qla4xxx_conn_bind,
 263         .stop_conn              = iscsi_conn_stop,
 264         .destroy_conn           = qla4xxx_conn_destroy,
 265         .set_param              = iscsi_set_param,
 266         .get_conn_param         = qla4xxx_conn_get_param,
 267         .get_session_param      = qla4xxx_session_get_param,
 268         .get_ep_param           = qla4xxx_get_ep_param,
 269         .ep_connect             = qla4xxx_ep_connect,
 270         .ep_poll                = qla4xxx_ep_poll,
 271         .ep_disconnect          = qla4xxx_ep_disconnect,
 272         .get_stats              = qla4xxx_conn_get_stats,
 273         .send_pdu               = iscsi_conn_send_pdu,
 274         .xmit_task              = qla4xxx_task_xmit,
 275         .cleanup_task           = qla4xxx_task_cleanup,
 276         .alloc_pdu              = qla4xxx_alloc_pdu,
 277
 278         .get_host_param         = qla4xxx_host_get_param,
 279         .set_iface_param        = qla4xxx_iface_set_param,
 280         .get_iface_param        = qla4xxx_get_iface_param,
 281         .bsg_request            = qla4xxx_bsg_request,
 282         .send_ping              = qla4xxx_send_ping,
 283         .get_chap               = qla4xxx_get_chap_list,
 284         .delete_chap            = qla4xxx_delete_chap,
 285         .set_chap               = qla4xxx_set_chap_entry,
 286         .get_flashnode_param    = qla4xxx_sysfs_ddb_get_param,
 287         .set_flashnode_param    = qla4xxx_sysfs_ddb_set_param,
 288         .new_flashnode          = qla4xxx_sysfs_ddb_add,
 289         .del_flashnode          = qla4xxx_sysfs_ddb_delete,
 290         .login_flashnode        = qla4xxx_sysfs_ddb_login,
 291         .logout_flashnode       = qla4xxx_sysfs_ddb_logout,
 292         .logout_flashnode_sid   = qla4xxx_sysfs_ddb_logout_sid,
 293         .get_host_stats         = qla4xxx_get_host_stats,
 294 };
 295
 296 static struct scsi_transport_template *qla4xxx_scsi_transport;
 297
 298 static int qla4xxx_isp_check_reg(struct scsi_qla_host *ha)
 299 {
 300         u32 reg_val = 0;
 301         int rval = QLA_SUCCESS;
 302
 303         if (is_qla8022(ha))
 304                 reg_val = readl(&ha->qla4_82xx_reg->host_status);
 305         else if (is_qla8032(ha) || is_qla8042(ha))
 306                 reg_val = qla4_8xxx_rd_direct(ha, QLA8XXX_PEG_ALIVE_COUNTER);
 307         else
 308                 reg_val = readw(&ha->reg->ctrl_status);
 309
 310         if (reg_val == QL4_ISP_REG_DISCONNECT)
 311                 rval = QLA_ERROR;
 312
 313         return rval;
 314 }
 315
 316 static int qla4xxx_send_ping(struct Scsi_Host *shost, uint32_t iface_num,
 317                              uint32_t iface_type, uint32_t payload_size,
 318                              uint32_t pid, struct sockaddr *dst_addr)
 319 {
 320         struct scsi_qla_host *ha = to_qla_host(shost);
 321         struct sockaddr_in *addr;
 322         struct sockaddr_in6 *addr6;
 323         uint32_t options = 0;
 324         uint8_t ipaddr[IPv6_ADDR_LEN];
 325         int rval;
 326
 327         memset(ipaddr, 0, IPv6_ADDR_LEN);
 328         /* IPv4 to IPv4 */
 329         if ((iface_type == ISCSI_IFACE_TYPE_IPV4) &&
 330             (dst_addr->sa_family == AF_INET)) {
 331                 addr = (struct sockaddr_in *)dst_addr;
 332                 memcpy(ipaddr, &addr->sin_addr.s_addr, IP_ADDR_LEN);
 333                 DEBUG2(ql4_printk(KERN_INFO, ha, "%s: IPv4 Ping src: %pI4 "
 334                                   "dest: %pI4\n", __func__,
 335                                   &ha->ip_config.ip_address, ipaddr));
 336                 rval = qla4xxx_ping_iocb(ha, options, payload_size, pid,
 337                                          ipaddr);
 338                 if (rval)
 339                         rval = -EINVAL;
 340         } else if ((iface_type == ISCSI_IFACE_TYPE_IPV6) &&
 341                    (dst_addr->sa_family == AF_INET6)) {
 342                 /* IPv6 to IPv6 */
 343                 addr6 = (struct sockaddr_in6 *)dst_addr;
 344                 memcpy(ipaddr, &addr6->sin6_addr.in6_u.u6_addr8, IPv6_ADDR_LEN);
 345
 346                 options |= PING_IPV6_PROTOCOL_ENABLE;
 347
 348                 /* Ping using LinkLocal address */
 349                 if ((iface_num == 0) || (iface_num == 1)) {
 350                         DEBUG2(ql4_printk(KERN_INFO, ha, "%s: LinkLocal Ping "
 351                                           "src: %pI6 dest: %pI6\n", __func__,
 352                                           &ha->ip_config.ipv6_link_local_addr,
 353                                           ipaddr));
 354                         options |= PING_IPV6_LINKLOCAL_ADDR;
 355                         rval = qla4xxx_ping_iocb(ha, options, payload_size,
 356                                                  pid, ipaddr);
 357                 } else {
 358                         ql4_printk(KERN_WARNING, ha, "%s: iface num = %d "
 359                                    "not supported\n", __func__, iface_num);
 360                         rval = -ENOSYS;
 361                         goto exit_send_ping;
 362                 }
 363
 364                 /*
 365                  * If ping using LinkLocal address fails, try ping using
 366                  * IPv6 address
 367                  */
 368                 if (rval != QLA_SUCCESS) {
 369                         options &= ~PING_IPV6_LINKLOCAL_ADDR;
 370                         if (iface_num == 0) {
 371                                 options |= PING_IPV6_ADDR0;
 372                                 DEBUG2(ql4_printk(KERN_INFO, ha, "%s: IPv6 "
 373                                                   "Ping src: %pI6 "
 374                                                   "dest: %pI6\n", __func__,
 375                                                   &ha->ip_config.ipv6_addr0,
 376                                                   ipaddr));
 377                         } else if (iface_num == 1) {
 378                                 options |= PING_IPV6_ADDR1;
 379                                 DEBUG2(ql4_printk(KERN_INFO, ha, "%s: IPv6 "
 380                                                   "Ping src: %pI6 "
 381                                                   "dest: %pI6\n", __func__,
 382                                                   &ha->ip_config.ipv6_addr1,
 383                                                   ipaddr));
 384                         }
 385                         rval = qla4xxx_ping_iocb(ha, options, payload_size,
 386                                                  pid, ipaddr);
 387                         if (rval)
 388                                 rval = -EINVAL;
 389                 }
 390         } else
 391                 rval = -ENOSYS;
 392 exit_send_ping:
 393         return rval;
 394 }
 395
 396 static umode_t qla4_attr_is_visible(int param_type, int param)
 397 {
 398         switch (param_type) {
 399         case ISCSI_HOST_PARAM:
 400                 switch (param) {
 401                 case ISCSI_HOST_PARAM_HWADDRESS:
 402                 case ISCSI_HOST_PARAM_IPADDRESS:
 403                 case ISCSI_HOST_PARAM_INITIATOR_NAME:
 404                 case ISCSI_HOST_PARAM_PORT_STATE:
 405                 case ISCSI_HOST_PARAM_PORT_SPEED:
 406                         return S_IRUGO;
 407                 default:
 408                         return 0;
 409                 }
 410         case ISCSI_PARAM:
 411                 switch (param) {
 412                 case ISCSI_PARAM_PERSISTENT_ADDRESS:
 413                 case ISCSI_PARAM_PERSISTENT_PORT:
 414                 case ISCSI_PARAM_CONN_ADDRESS:
 415                 case ISCSI_PARAM_CONN_PORT:
 416                 case ISCSI_PARAM_TARGET_NAME:
 417                 case ISCSI_PARAM_TPGT:
 418                 case ISCSI_PARAM_TARGET_ALIAS:
 419                 case ISCSI_PARAM_MAX_BURST:
 420                 case ISCSI_PARAM_MAX_R2T:
 421                 case ISCSI_PARAM_FIRST_BURST:
 422                 case ISCSI_PARAM_MAX_RECV_DLENGTH:
 423                 case ISCSI_PARAM_MAX_XMIT_DLENGTH:
 424                 case ISCSI_PARAM_IFACE_NAME:
 425                 case ISCSI_PARAM_CHAP_OUT_IDX:
 426                 case ISCSI_PARAM_CHAP_IN_IDX:
 427                 case ISCSI_PARAM_USERNAME:
 428                 case ISCSI_PARAM_PASSWORD:
 429                 case ISCSI_PARAM_USERNAME_IN:
 430                 case ISCSI_PARAM_PASSWORD_IN:
 431                 case ISCSI_PARAM_AUTO_SND_TGT_DISABLE:
 432                 case ISCSI_PARAM_DISCOVERY_SESS:
 433                 case ISCSI_PARAM_PORTAL_TYPE:
 434                 case ISCSI_PARAM_CHAP_AUTH_EN:
 435                 case ISCSI_PARAM_DISCOVERY_LOGOUT_EN:
 436                 case ISCSI_PARAM_BIDI_CHAP_EN:
 437                 case ISCSI_PARAM_DISCOVERY_AUTH_OPTIONAL:
 438                 case ISCSI_PARAM_DEF_TIME2WAIT:
 439                 case ISCSI_PARAM_DEF_TIME2RETAIN:
 440                 case ISCSI_PARAM_HDRDGST_EN:
 441                 case ISCSI_PARAM_DATADGST_EN:
 442                 case ISCSI_PARAM_INITIAL_R2T_EN:
 443                 case ISCSI_PARAM_IMM_DATA_EN:
 444                 case ISCSI_PARAM_PDU_INORDER_EN:
 445                 case ISCSI_PARAM_DATASEQ_INORDER_EN:
 446                 case ISCSI_PARAM_MAX_SEGMENT_SIZE:
 447                 case ISCSI_PARAM_TCP_TIMESTAMP_STAT:
 448                 case ISCSI_PARAM_TCP_WSF_DISABLE:
 449                 case ISCSI_PARAM_TCP_NAGLE_DISABLE:
 450                 case ISCSI_PARAM_TCP_TIMER_SCALE:
 451                 case ISCSI_PARAM_TCP_TIMESTAMP_EN:
 452                 case ISCSI_PARAM_TCP_XMIT_WSF:
 453                 case ISCSI_PARAM_TCP_RECV_WSF:
 454                 case ISCSI_PARAM_IP_FRAGMENT_DISABLE:
 455                 case ISCSI_PARAM_IPV4_TOS:
 456                 case ISCSI_PARAM_IPV6_TC:
 457                 case ISCSI_PARAM_IPV6_FLOW_LABEL:
 458                 case ISCSI_PARAM_IS_FW_ASSIGNED_IPV6:
 459                 case ISCSI_PARAM_KEEPALIVE_TMO:
 460                 case ISCSI_PARAM_LOCAL_PORT:
 461                 case ISCSI_PARAM_ISID:
 462                 case ISCSI_PARAM_TSID:
 463                 case ISCSI_PARAM_DEF_TASKMGMT_TMO:
 464                 case ISCSI_PARAM_ERL:
 465                 case ISCSI_PARAM_STATSN:
 466                 case ISCSI_PARAM_EXP_STATSN:
 467                 case ISCSI_PARAM_DISCOVERY_PARENT_IDX:
 468                 case ISCSI_PARAM_DISCOVERY_PARENT_TYPE:
 469                 case ISCSI_PARAM_LOCAL_IPADDR:
 470                         return S_IRUGO;
 471                 default:
 472                         return 0;
 473                 }
 474         case ISCSI_NET_PARAM:
 475                 switch (param) {
 476                 case ISCSI_NET_PARAM_IPV4_ADDR:
 477                 case ISCSI_NET_PARAM_IPV4_SUBNET:
 478                 case ISCSI_NET_PARAM_IPV4_GW:
 479                 case ISCSI_NET_PARAM_IPV4_BOOTPROTO:
 480                 case ISCSI_NET_PARAM_IFACE_ENABLE:
 481                 case ISCSI_NET_PARAM_IPV6_LINKLOCAL:
 482                 case ISCSI_NET_PARAM_IPV6_ADDR:
 483                 case ISCSI_NET_PARAM_IPV6_ROUTER:
 484                 case ISCSI_NET_PARAM_IPV6_ADDR_AUTOCFG:
 485                 case ISCSI_NET_PARAM_IPV6_LINKLOCAL_AUTOCFG:
 486                 case ISCSI_NET_PARAM_VLAN_ID:
 487                 case ISCSI_NET_PARAM_VLAN_PRIORITY:
 488                 case ISCSI_NET_PARAM_VLAN_ENABLED:
 489                 case ISCSI_NET_PARAM_MTU:
 490                 case ISCSI_NET_PARAM_PORT:
 491                 case ISCSI_NET_PARAM_IPADDR_STATE:
 492                 case ISCSI_NET_PARAM_IPV6_LINKLOCAL_STATE:
 493                 case ISCSI_NET_PARAM_IPV6_ROUTER_STATE:
 494                 case ISCSI_NET_PARAM_DELAYED_ACK_EN:
 495                 case ISCSI_NET_PARAM_TCP_NAGLE_DISABLE:
 496                 case ISCSI_NET_PARAM_TCP_WSF_DISABLE:
 497                 case ISCSI_NET_PARAM_TCP_WSF:
 498                 case ISCSI_NET_PARAM_TCP_TIMER_SCALE:
 499                 case ISCSI_NET_PARAM_TCP_TIMESTAMP_EN:
 500                 case ISCSI_NET_PARAM_CACHE_ID:
 501                 case ISCSI_NET_PARAM_IPV4_DHCP_DNS_ADDR_EN:
 502                 case ISCSI_NET_PARAM_IPV4_DHCP_SLP_DA_EN:
 503                 case ISCSI_NET_PARAM_IPV4_TOS_EN:
 504                 case ISCSI_NET_PARAM_IPV4_TOS:
 505                 case ISCSI_NET_PARAM_IPV4_GRAT_ARP_EN:
 506                 case ISCSI_NET_PARAM_IPV4_DHCP_ALT_CLIENT_ID_EN:
 507                 case ISCSI_NET_PARAM_IPV4_DHCP_ALT_CLIENT_ID:
 508                 case ISCSI_NET_PARAM_IPV4_DHCP_REQ_VENDOR_ID_EN:
 509                 case ISCSI_NET_PARAM_IPV4_DHCP_USE_VENDOR_ID_EN:
 510                 case ISCSI_NET_PARAM_IPV4_DHCP_VENDOR_ID:
 511                 case ISCSI_NET_PARAM_IPV4_DHCP_LEARN_IQN_EN:
 512                 case ISCSI_NET_PARAM_IPV4_FRAGMENT_DISABLE:
 513                 case ISCSI_NET_PARAM_IPV4_IN_FORWARD_EN:
 514                 case ISCSI_NET_PARAM_REDIRECT_EN:
 515                 case ISCSI_NET_PARAM_IPV4_TTL:
 516                 case ISCSI_NET_PARAM_IPV6_GRAT_NEIGHBOR_ADV_EN:
 517                 case ISCSI_NET_PARAM_IPV6_MLD_EN:
 518                 case ISCSI_NET_PARAM_IPV6_FLOW_LABEL:
 519                 case ISCSI_NET_PARAM_IPV6_TRAFFIC_CLASS:
 520                 case ISCSI_NET_PARAM_IPV6_HOP_LIMIT:
 521                 case ISCSI_NET_PARAM_IPV6_ND_REACHABLE_TMO:
 522                 case ISCSI_NET_PARAM_IPV6_ND_REXMIT_TIME:
 523                 case ISCSI_NET_PARAM_IPV6_ND_STALE_TMO:
 524                 case ISCSI_NET_PARAM_IPV6_DUP_ADDR_DETECT_CNT:
 525                 case ISCSI_NET_PARAM_IPV6_RTR_ADV_LINK_MTU:
 526                         return S_IRUGO;
 527                 default:
 528                         return 0;
 529                 }
 530         case ISCSI_IFACE_PARAM:
 531                 switch (param) {
 532                 case ISCSI_IFACE_PARAM_DEF_TASKMGMT_TMO:
 533                 case ISCSI_IFACE_PARAM_HDRDGST_EN:
 534                 case ISCSI_IFACE_PARAM_DATADGST_EN:
 535                 case ISCSI_IFACE_PARAM_IMM_DATA_EN:
 536                 case ISCSI_IFACE_PARAM_INITIAL_R2T_EN:
 537                 case ISCSI_IFACE_PARAM_DATASEQ_INORDER_EN:
 538                 case ISCSI_IFACE_PARAM_PDU_INORDER_EN:
 539                 case ISCSI_IFACE_PARAM_ERL:
 540                 case ISCSI_IFACE_PARAM_MAX_RECV_DLENGTH:
 541                 case ISCSI_IFACE_PARAM_FIRST_BURST:
 542                 case ISCSI_IFACE_PARAM_MAX_R2T:
 543                 case ISCSI_IFACE_PARAM_MAX_BURST:
 544                 case ISCSI_IFACE_PARAM_CHAP_AUTH_EN:
 545                 case ISCSI_IFACE_PARAM_BIDI_CHAP_EN:
 546                 case ISCSI_IFACE_PARAM_DISCOVERY_AUTH_OPTIONAL:
 547                 case ISCSI_IFACE_PARAM_DISCOVERY_LOGOUT_EN:
 548                 case ISCSI_IFACE_PARAM_STRICT_LOGIN_COMP_EN:
 549                 case ISCSI_IFACE_PARAM_INITIATOR_NAME:
 550                         return S_IRUGO;
 551                 default:
 552                         return 0;
 553                 }
 554         case ISCSI_FLASHNODE_PARAM:
 555                 switch (param) {
 556                 case ISCSI_FLASHNODE_IS_FW_ASSIGNED_IPV6:
 557                 case ISCSI_FLASHNODE_PORTAL_TYPE:
 558                 case ISCSI_FLASHNODE_AUTO_SND_TGT_DISABLE:
 559                 case ISCSI_FLASHNODE_DISCOVERY_SESS:
 560                 case ISCSI_FLASHNODE_ENTRY_EN:
 561                 case ISCSI_FLASHNODE_HDR_DGST_EN:
 562                 case ISCSI_FLASHNODE_DATA_DGST_EN:
 563                 case ISCSI_FLASHNODE_IMM_DATA_EN:
 564                 case ISCSI_FLASHNODE_INITIAL_R2T_EN:
 565                 case ISCSI_FLASHNODE_DATASEQ_INORDER:
 566                 case ISCSI_FLASHNODE_PDU_INORDER:
 567                 case ISCSI_FLASHNODE_CHAP_AUTH_EN:
 568                 case ISCSI_FLASHNODE_SNACK_REQ_EN:
 569                 case ISCSI_FLASHNODE_DISCOVERY_LOGOUT_EN:
 570                 case ISCSI_FLASHNODE_BIDI_CHAP_EN:
 571                 case ISCSI_FLASHNODE_DISCOVERY_AUTH_OPTIONAL:
 572                 case ISCSI_FLASHNODE_ERL:
 573                 case ISCSI_FLASHNODE_TCP_TIMESTAMP_STAT:
 574                 case ISCSI_FLASHNODE_TCP_NAGLE_DISABLE:
 575                 case ISCSI_FLASHNODE_TCP_WSF_DISABLE:
 576                 case ISCSI_FLASHNODE_TCP_TIMER_SCALE:
 577                 case ISCSI_FLASHNODE_TCP_TIMESTAMP_EN:
 578                 case ISCSI_FLASHNODE_IP_FRAG_DISABLE:
 579                 case ISCSI_FLASHNODE_MAX_RECV_DLENGTH:
 580                 case ISCSI_FLASHNODE_MAX_XMIT_DLENGTH:
 581                 case ISCSI_FLASHNODE_FIRST_BURST:
 582                 case ISCSI_FLASHNODE_DEF_TIME2WAIT:
 583                 case ISCSI_FLASHNODE_DEF_TIME2RETAIN:
 584                 case ISCSI_FLASHNODE_MAX_R2T:
 585                 case ISCSI_FLASHNODE_KEEPALIVE_TMO:
 586                 case ISCSI_FLASHNODE_ISID:
 587                 case ISCSI_FLASHNODE_TSID:
 588                 case ISCSI_FLASHNODE_PORT:
 589                 case ISCSI_FLASHNODE_MAX_BURST:
 590                 case ISCSI_FLASHNODE_DEF_TASKMGMT_TMO:
 591                 case ISCSI_FLASHNODE_IPADDR:
 592                 case ISCSI_FLASHNODE_ALIAS:
 593                 case ISCSI_FLASHNODE_REDIRECT_IPADDR:
 594                 case ISCSI_FLASHNODE_MAX_SEGMENT_SIZE:
 595                 case ISCSI_FLASHNODE_LOCAL_PORT:
 596                 case ISCSI_FLASHNODE_IPV4_TOS:
 597                 case ISCSI_FLASHNODE_IPV6_TC:
 598                 case ISCSI_FLASHNODE_IPV6_FLOW_LABEL:
 599                 case ISCSI_FLASHNODE_NAME:
 600                 case ISCSI_FLASHNODE_TPGT:
 601                 case ISCSI_FLASHNODE_LINK_LOCAL_IPV6:
 602                 case ISCSI_FLASHNODE_DISCOVERY_PARENT_IDX:
 603                 case ISCSI_FLASHNODE_DISCOVERY_PARENT_TYPE:
 604                 case ISCSI_FLASHNODE_TCP_XMIT_WSF:
 605                 case ISCSI_FLASHNODE_TCP_RECV_WSF:
 606                 case ISCSI_FLASHNODE_CHAP_OUT_IDX:
 607                 case ISCSI_FLASHNODE_USERNAME:
 608                 case ISCSI_FLASHNODE_PASSWORD:
 609                 case ISCSI_FLASHNODE_STATSN:
 610                 case ISCSI_FLASHNODE_EXP_STATSN:
 611                 case ISCSI_FLASHNODE_IS_BOOT_TGT:
 612                         return S_IRUGO;
 613                 default:
 614                         return 0;
 615                 }
 616         }
 617
 618         return 0;
 619 }
 620
 621 /**
 622  * qla4xxx_create chap_list - Create CHAP list from FLASH
 623  * @ha: pointer to adapter structure
 624  *
 625  * Read flash and make a list of CHAP entries, during login when a CHAP entry
 626  * is received, it will be checked in this list. If entry exist then the CHAP
 627  * entry index is set in the DDB. If CHAP entry does not exist in this list
 628  * then a new entry is added in FLASH in CHAP table and the index obtained is
 629  * used in the DDB.
 630  **/
 631 static void qla4xxx_create_chap_list(struct scsi_qla_host *ha)
 632 {
 633         int rval = 0;
 634         uint8_t *chap_flash_data = NULL;
 635         uint32_t offset;
 636         dma_addr_t chap_dma;
 637         uint32_t chap_size = 0;
 638
 639         if (is_qla40XX(ha))
 640                 chap_size = MAX_CHAP_ENTRIES_40XX *
 641                             sizeof(struct ql4_chap_table);
 642         else    /* Single region contains CHAP info for both
 643                  * ports which is divided into half for each port.
 644                  */
 645                 chap_size = ha->hw.flt_chap_size / 2;
 646
 647         chap_flash_data = dma_alloc_coherent(&ha->pdev->dev, chap_size,
 648                                              &chap_dma, GFP_KERNEL);
 649         if (!chap_flash_data) {
 650                 ql4_printk(KERN_ERR, ha, "No memory for chap_flash_data\n");
 651                 return;
 652         }
 653
 654         if (is_qla40XX(ha)) {
 655                 offset = FLASH_CHAP_OFFSET;
 656         } else {
 657                 offset = FLASH_RAW_ACCESS_ADDR + (ha->hw.flt_region_chap << 2);
 658                 if (ha->port_num == 1)
 659                         offset += chap_size;
 660         }
 661
 662         rval = qla4xxx_get_flash(ha, chap_dma, offset, chap_size);
 663         if (rval != QLA_SUCCESS)
 664                 goto exit_chap_list;
 665
 666         if (ha->chap_list == NULL)
 667                 ha->chap_list = vmalloc(chap_size);
 668         if (ha->chap_list == NULL) {
 669                 ql4_printk(KERN_ERR, ha, "No memory for ha->chap_list\n");
 670                 goto exit_chap_list;
 671         }
 672
 673         memset(ha->chap_list, 0, chap_size);
 674         memcpy(ha->chap_list, chap_flash_data, chap_size);
 675
 676 exit_chap_list:
 677         dma_free_coherent(&ha->pdev->dev, chap_size, chap_flash_data, chap_dma);
 678 }
 679
 680 static int qla4xxx_get_chap_by_index(struct scsi_qla_host *ha,
 681                                      int16_t chap_index,
 682                                      struct ql4_chap_table **chap_entry)
 683 {
 684         int rval = QLA_ERROR;
 685         int max_chap_entries;
 686
 687         if (!ha->chap_list) {
 688                 ql4_printk(KERN_ERR, ha, "CHAP table cache is empty!\n");
 689                 rval = QLA_ERROR;
 690                 goto exit_get_chap;
 691         }
 692
 693         if (is_qla80XX(ha))
 694                 max_chap_entries = (ha->hw.flt_chap_size / 2) /
 695                                    sizeof(struct ql4_chap_table);
 696         else
 697                 max_chap_entries = MAX_CHAP_ENTRIES_40XX;
 698
 699         if (chap_index > max_chap_entries) {
 700                 ql4_printk(KERN_ERR, ha, "Invalid Chap index\n");
 701                 rval = QLA_ERROR;
 702                 goto exit_get_chap;
 703         }
 704
 705         *chap_entry = (struct ql4_chap_table *)ha->chap_list + chap_index;
 706         if ((*chap_entry)->cookie !=
 707              __constant_cpu_to_le16(CHAP_VALID_COOKIE)) {
 708                 rval = QLA_ERROR;
 709                 *chap_entry = NULL;
 710         } else {
 711                 rval = QLA_SUCCESS;
 712         }
 713
 714 exit_get_chap:
 715         return rval;
 716 }
 717
 718 /**
 719  * qla4xxx_find_free_chap_index - Find the first free chap index
 720  * @ha: pointer to adapter structure
 721  * @chap_index: CHAP index to be returned
 722  *
 723  * Find the first free chap index available in the chap table
 724  *
 725  * Note: Caller should acquire the chap lock before getting here.
 726  **/
 727 static int qla4xxx_find_free_chap_index(struct scsi_qla_host *ha,
 728                                         uint16_t *chap_index)
 729 {
 730         int i, rval;
 731         int free_index = -1;
 732         int max_chap_entries = 0;
 733         struct ql4_chap_table *chap_table;
 734
 735         if (is_qla80XX(ha))
 736                 max_chap_entries = (ha->hw.flt_chap_size / 2) /
 737                                                 sizeof(struct ql4_chap_table);
 738         else
 739                 max_chap_entries = MAX_CHAP_ENTRIES_40XX;
 740
 741         if (!ha->chap_list) {
 742                 ql4_printk(KERN_ERR, ha, "CHAP table cache is empty!\n");
 743                 rval = QLA_ERROR;
 744                 goto exit_find_chap;
 745         }
 746
 747         for (i = 0; i < max_chap_entries; i++) {
 748                 chap_table = (struct ql4_chap_table *)ha->chap_list + i;
 749
 750                 if ((chap_table->cookie !=
 751                     __constant_cpu_to_le16(CHAP_VALID_COOKIE)) &&
 752                    (i > MAX_RESRV_CHAP_IDX)) {
 753                                 free_index = i;
 754                                 break;
 755                 }
 756         }
 757
 758         if (free_index != -1) {
 759                 *chap_index = free_index;
 760                 rval = QLA_SUCCESS;
 761         } else {
 762                 rval = QLA_ERROR;
 763         }
 764
 765 exit_find_chap:
 766         return rval;
 767 }
 768
 769 static int qla4xxx_get_chap_list(struct Scsi_Host *shost, uint16_t chap_tbl_idx,
 770                                   uint32_t *num_entries, char *buf)
 771 {
 772         struct scsi_qla_host *ha = to_qla_host(shost);
 773         struct ql4_chap_table *chap_table;
 774         struct iscsi_chap_rec *chap_rec;
 775         int max_chap_entries = 0;
 776         int valid_chap_entries = 0;
 777         int ret = 0, i;
 778
 779         if (is_qla80XX(ha))
 780                 max_chap_entries = (ha->hw.flt_chap_size / 2) /
 781                                         sizeof(struct ql4_chap_table);
 782         else
 783                 max_chap_entries = MAX_CHAP_ENTRIES_40XX;
 784
 785         ql4_printk(KERN_INFO, ha, "%s: num_entries = %d, CHAP idx = %d\n",
 786                         __func__, *num_entries, chap_tbl_idx);
 787
 788         if (!buf) {
 789                 ret = -ENOMEM;
 790                 goto exit_get_chap_list;
 791         }
 792
 793         qla4xxx_create_chap_list(ha);
 794
 795         chap_rec = (struct iscsi_chap_rec *) buf;
 796         mutex_lock(&ha->chap_sem);
 797         for (i = chap_tbl_idx; i < max_chap_entries; i++) {
 798                 chap_table = (struct ql4_chap_table *)ha->chap_list + i;
 799                 if (chap_table->cookie !=
 800                     __constant_cpu_to_le16(CHAP_VALID_COOKIE))
 801                         continue;
 802
 803                 chap_rec->chap_tbl_idx = i;
 804                 strlcpy(chap_rec->username, chap_table->name,
 805                         ISCSI_CHAP_AUTH_NAME_MAX_LEN);
 806                 strlcpy(chap_rec->password, chap_table->secret,
 807                         QL4_CHAP_MAX_SECRET_LEN);
 808                 chap_rec->password_length = chap_table->secret_len;
 809
 810                 if (chap_table->flags & BIT_7) /* local */
 811                         chap_rec->chap_type = CHAP_TYPE_OUT;
 812
 813                 if (chap_table->flags & BIT_6) /* peer */
 814                         chap_rec->chap_type = CHAP_TYPE_IN;
 815
 816                 chap_rec++;
 817
 818                 valid_chap_entries++;
 819                 if (valid_chap_entries == *num_entries)
 820                         break;
 821                 else
 822                         continue;
 823         }
 824         mutex_unlock(&ha->chap_sem);
 825
 826 exit_get_chap_list:
 827         ql4_printk(KERN_INFO, ha, "%s: Valid CHAP Entries = %d\n",
 828                         __func__,  valid_chap_entries);
 829         *num_entries = valid_chap_entries;
 830         return ret;
 831 }
 832
 833 static int __qla4xxx_is_chap_active(struct device *dev, void *data)
 834 {
 835         int ret = 0;
 836         uint16_t *chap_tbl_idx = (uint16_t *) data;
 837         struct iscsi_cls_session *cls_session;
 838         struct iscsi_session *sess;
 839         struct ddb_entry *ddb_entry;
 840
 841         if (!iscsi_is_session_dev(dev))
 842                 goto exit_is_chap_active;
 843
 844         cls_session = iscsi_dev_to_session(dev);
 845         sess = cls_session->dd_data;
 846         ddb_entry = sess->dd_data;
 847
 848         if (iscsi_session_chkready(cls_session))
 849                 goto exit_is_chap_active;
 850
 851         if (ddb_entry->chap_tbl_idx == *chap_tbl_idx)
 852                 ret = 1;
 853
 854 exit_is_chap_active:
 855         return ret;
 856 }
 857
 858 static int qla4xxx_is_chap_active(struct Scsi_Host *shost,
 859                                   uint16_t chap_tbl_idx)
 860 {
 861         int ret = 0;
 862
 863         ret = device_for_each_child(&shost->shost_gendev, &chap_tbl_idx,
 864                                     __qla4xxx_is_chap_active);
 865
 866         return ret;
 867 }
 868
 869 static int qla4xxx_delete_chap(struct Scsi_Host *shost, uint16_t chap_tbl_idx)
 870 {
 871         struct scsi_qla_host *ha = to_qla_host(shost);
 872         struct ql4_chap_table *chap_table;
 873         dma_addr_t chap_dma;
 874         int max_chap_entries = 0;
 875         uint32_t offset = 0;
 876         uint32_t chap_size;
 877         int ret = 0;
 878
 879         chap_table = dma_pool_zalloc(ha->chap_dma_pool, GFP_KERNEL, &chap_dma);
 880         if (chap_table == NULL)
 881                 return -ENOMEM;
 882
 883         if (is_qla80XX(ha))
 884                 max_chap_entries = (ha->hw.flt_chap_size / 2) /
 885                                    sizeof(struct ql4_chap_table);
 886         else
 887                 max_chap_entries = MAX_CHAP_ENTRIES_40XX;
 888
 889         if (chap_tbl_idx > max_chap_entries) {
 890                 ret = -EINVAL;
 891                 goto exit_delete_chap;
 892         }
 893
 894         /* Check if chap index is in use.
 895          * If chap is in use don't delet chap entry */
 896         ret = qla4xxx_is_chap_active(shost, chap_tbl_idx);
 897         if (ret) {
 898                 ql4_printk(KERN_INFO, ha, "CHAP entry %d is in use, cannot "
 899                            "delete from flash\n", chap_tbl_idx);
 900                 ret = -EBUSY;
 901                 goto exit_delete_chap;
 902         }
 903
 904         chap_size = sizeof(struct ql4_chap_table);
 905         if (is_qla40XX(ha))
 906                 offset = FLASH_CHAP_OFFSET | (chap_tbl_idx * chap_size);
 907         else {
 908                 offset = FLASH_RAW_ACCESS_ADDR + (ha->hw.flt_region_chap << 2);
 909                 /* flt_chap_size is CHAP table size for both ports
 910                  * so divide it by 2 to calculate the offset for second port
 911                  */
 912                 if (ha->port_num == 1)
 913                         offset += (ha->hw.flt_chap_size / 2);
 914                 offset += (chap_tbl_idx * chap_size);
 915         }
 916
 917         ret = qla4xxx_get_flash(ha, chap_dma, offset, chap_size);
 918         if (ret != QLA_SUCCESS) {
 919                 ret = -EINVAL;
 920                 goto exit_delete_chap;
 921         }
 922
 923         DEBUG2(ql4_printk(KERN_INFO, ha, "Chap Cookie: x%x\n",
 924                           __le16_to_cpu(chap_table->cookie)));
 925
 926         if (__le16_to_cpu(chap_table->cookie) != CHAP_VALID_COOKIE) {
 927                 ql4_printk(KERN_ERR, ha, "No valid chap entry found\n");
 928                 goto exit_delete_chap;
 929         }
 930
 931         chap_table->cookie = __constant_cpu_to_le16(0xFFFF);
 932
 933         offset = FLASH_CHAP_OFFSET |
 934                         (chap_tbl_idx * sizeof(struct ql4_chap_table));
 935         ret = qla4xxx_set_flash(ha, chap_dma, offset, chap_size,
 936                                 FLASH_OPT_RMW_COMMIT);
 937         if (ret == QLA_SUCCESS && ha->chap_list) {
 938                 mutex_lock(&ha->chap_sem);
 939                 /* Update ha chap_list cache */
 940                 memcpy((struct ql4_chap_table *)ha->chap_list + chap_tbl_idx,
 941                         chap_table, sizeof(struct ql4_chap_table));
 942                 mutex_unlock(&ha->chap_sem);
 943         }
 944         if (ret != QLA_SUCCESS)
 945                 ret =  -EINVAL;
 946
 947 exit_delete_chap:
 948         dma_pool_free(ha->chap_dma_pool, chap_table, chap_dma);
 949         return ret;
 950 }
 951
 952 /**
 953  * qla4xxx_set_chap_entry - Make chap entry with given information
 954  * @shost: pointer to host
 955  * @data: chap info - credentials, index and type to make chap entry
 956  * @len: length of data
 957  *
 958  * Add or update chap entry with the given information
 959  **/
 960 static int qla4xxx_set_chap_entry(struct Scsi_Host *shost, void *data, int len)
 961 {
 962         struct scsi_qla_host *ha = to_qla_host(shost);
 963         struct iscsi_chap_rec chap_rec;
 964         struct ql4_chap_table *chap_entry = NULL;
 965         struct iscsi_param_info *param_info;
 966         struct nlattr *attr;
 967         int max_chap_entries = 0;
 968         int type;
 969         int rem = len;
 970         int rc = 0;
 971         int size;
 972
 973         memset(&chap_rec, 0, sizeof(chap_rec));
 974
 975         nla_for_each_attr(attr, data, len, rem) {
 976                 param_info = nla_data(attr);
 977
 978                 switch (param_info->param) {
 979                 case ISCSI_CHAP_PARAM_INDEX:
 980                         chap_rec.chap_tbl_idx = *(uint16_t *)param_info->value;
 981                         break;
 982                 case ISCSI_CHAP_PARAM_CHAP_TYPE:
 983                         chap_rec.chap_type = param_info->value[0];
 984                         break;
 985                 case ISCSI_CHAP_PARAM_USERNAME:
 986                         size = min_t(size_t, sizeof(chap_rec.username),
 987                                      param_info->len);
 988                         memcpy(chap_rec.username, param_info->value, size);
 989                         break;
 990                 case ISCSI_CHAP_PARAM_PASSWORD:
 991                         size = min_t(size_t, sizeof(chap_rec.password),
 992                                      param_info->len);
 993                         memcpy(chap_rec.password, param_info->value, size);
 994                         break;
 995                 case ISCSI_CHAP_PARAM_PASSWORD_LEN:
 996                         chap_rec.password_length = param_info->value[0];
 997                         break;
 998                 default:
 999                         ql4_printk(KERN_ERR, ha,
1000                                    "%s: No such sysfs attribute\n", __func__);
1001                         rc = -ENOSYS;
1002                         goto exit_set_chap;
1003                 }
1004         }
1005
1006         if (chap_rec.chap_type == CHAP_TYPE_IN)
1007                 type = BIDI_CHAP;
1008         else
1009                 type = LOCAL_CHAP;
1010
1011         if (is_qla80XX(ha))
1012                 max_chap_entries = (ha->hw.flt_chap_size / 2) /
1013                                    sizeof(struct ql4_chap_table);
1014         else
1015                 max_chap_entries = MAX_CHAP_ENTRIES_40XX;
1016
1017         mutex_lock(&ha->chap_sem);
1018         if (chap_rec.chap_tbl_idx < max_chap_entries) {
1019                 rc = qla4xxx_get_chap_by_index(ha, chap_rec.chap_tbl_idx,
1020                                                &chap_entry);
1021                 if (!rc) {
1022                         if (!(type == qla4xxx_get_chap_type(chap_entry))) {
1023                                 ql4_printk(KERN_INFO, ha,
1024                                            "Type mismatch for CHAP entry %d\n",
1025                                            chap_rec.chap_tbl_idx);
1026                                 rc = -EINVAL;
1027                                 goto exit_unlock_chap;
1028                         }
1029
1030                         /* If chap index is in use then don't modify it */
1031                         rc = qla4xxx_is_chap_active(shost,
1032                                                     chap_rec.chap_tbl_idx);
1033                         if (rc) {
1034                                 ql4_printk(KERN_INFO, ha,
1035                                            "CHAP entry %d is in use\n",
1036                                            chap_rec.chap_tbl_idx);
1037                                 rc = -EBUSY;
1038                                 goto exit_unlock_chap;
1039                         }
1040                 }
1041         } else {
1042                 rc = qla4xxx_find_free_chap_index(ha, &chap_rec.chap_tbl_idx);
1043                 if (rc) {
1044                         ql4_printk(KERN_INFO, ha, "CHAP entry not available\n");
1045                         rc = -EBUSY;
1046                         goto exit_unlock_chap;
1047                 }
1048         }
1049
1050         rc = qla4xxx_set_chap(ha, chap_rec.username, chap_rec.password,
1051                               chap_rec.chap_tbl_idx, type);
1052
1053 exit_unlock_chap:
1054         mutex_unlock(&ha->chap_sem);
1055
1056 exit_set_chap:
1057         return rc;
1058 }
1059
1060
1061 static int qla4xxx_get_host_stats(struct Scsi_Host *shost, char *buf, int len)
1062 {
1063         struct scsi_qla_host *ha = to_qla_host(shost);
1064         struct iscsi_offload_host_stats *host_stats = NULL;
1065         int host_stats_size;
1066         int ret = 0;
1067         int ddb_idx = 0;
1068         struct ql_iscsi_stats *ql_iscsi_stats = NULL;
1069         int stats_size;
1070         dma_addr_t iscsi_stats_dma;
1071
1072         DEBUG2(ql4_printk(KERN_INFO, ha, "Func: %s\n", __func__));
1073
1074         host_stats_size = sizeof(struct iscsi_offload_host_stats);
1075
1076         if (host_stats_size != len) {
1077                 ql4_printk(KERN_INFO, ha, "%s: host_stats size mismatch expected = %d, is = %d\n",
1078                            __func__, len, host_stats_size);
1079                 ret = -EINVAL;
1080                 goto exit_host_stats;
1081         }
1082         host_stats = (struct iscsi_offload_host_stats *)buf;
1083
1084         if (!buf) {
1085                 ret = -ENOMEM;
1086                 goto exit_host_stats;
1087         }
1088
1089         stats_size = PAGE_ALIGN(sizeof(struct ql_iscsi_stats));
1090
1091         ql_iscsi_stats = dma_alloc_coherent(&ha->pdev->dev, stats_size,
1092                                             &iscsi_stats_dma, GFP_KERNEL);
1093         if (!ql_iscsi_stats) {
1094                 ql4_printk(KERN_ERR, ha,
1095                            "Unable to allocate memory for iscsi stats\n");
1096                 ret = -ENOMEM;
1097                 goto exit_host_stats;
1098         }
1099
1100         ret =  qla4xxx_get_mgmt_data(ha, ddb_idx, stats_size,
1101                                      iscsi_stats_dma);
1102         if (ret != QLA_SUCCESS) {
1103                 ql4_printk(KERN_ERR, ha,
1104                            "Unable to retrieve iscsi stats\n");
1105                 ret = -EIO;
1106                 goto exit_host_stats;
1107         }
1108         host_stats->mactx_frames = le64_to_cpu(ql_iscsi_stats->mac_tx_frames);
1109         host_stats->mactx_bytes = le64_to_cpu(ql_iscsi_stats->mac_tx_bytes);
1110         host_stats->mactx_multicast_frames =
1111                         le64_to_cpu(ql_iscsi_stats->mac_tx_multicast_frames);
1112         host_stats->mactx_broadcast_frames =
1113                         le64_to_cpu(ql_iscsi_stats->mac_tx_broadcast_frames);
1114         host_stats->mactx_pause_frames =
1115                         le64_to_cpu(ql_iscsi_stats->mac_tx_pause_frames);
1116         host_stats->mactx_control_frames =
1117                         le64_to_cpu(ql_iscsi_stats->mac_tx_control_frames);
1118         host_stats->mactx_deferral =
1119                         le64_to_cpu(ql_iscsi_stats->mac_tx_deferral);
1120         host_stats->mactx_excess_deferral =
1121                         le64_to_cpu(ql_iscsi_stats->mac_tx_excess_deferral);
1122         host_stats->mactx_late_collision =
1123                         le64_to_cpu(ql_iscsi_stats->mac_tx_late_collision);
1124         host_stats->mactx_abort = le64_to_cpu(ql_iscsi_stats->mac_tx_abort);
1125         host_stats->mactx_single_collision =
1126                         le64_to_cpu(ql_iscsi_stats->mac_tx_single_collision);
1127         host_stats->mactx_multiple_collision =
1128                         le64_to_cpu(ql_iscsi_stats->mac_tx_multiple_collision);
1129         host_stats->mactx_collision =
1130                         le64_to_cpu(ql_iscsi_stats->mac_tx_collision);
1131         host_stats->mactx_frames_dropped =
1132                         le64_to_cpu(ql_iscsi_stats->mac_tx_frames_dropped);
1133         host_stats->mactx_jumbo_frames =
1134                         le64_to_cpu(ql_iscsi_stats->mac_tx_jumbo_frames);
1135         host_stats->macrx_frames = le64_to_cpu(ql_iscsi_stats->mac_rx_frames);
1136         host_stats->macrx_bytes = le64_to_cpu(ql_iscsi_stats->mac_rx_bytes);
1137         host_stats->macrx_unknown_control_frames =
1138                 le64_to_cpu(ql_iscsi_stats->mac_rx_unknown_control_frames);
1139         host_stats->macrx_pause_frames =
1140                         le64_to_cpu(ql_iscsi_stats->mac_rx_pause_frames);
1141         host_stats->macrx_control_frames =
1142                         le64_to_cpu(ql_iscsi_stats->mac_rx_control_frames);
1143         host_stats->macrx_dribble =
1144                         le64_to_cpu(ql_iscsi_stats->mac_rx_dribble);
1145         host_stats->macrx_frame_length_error =
1146                         le64_to_cpu(ql_iscsi_stats->mac_rx_frame_length_error);
1147         host_stats->macrx_jabber = le64_to_cpu(ql_iscsi_stats->mac_rx_jabber);
1148         host_stats->macrx_carrier_sense_error =
1149                 le64_to_cpu(ql_iscsi_stats->mac_rx_carrier_sense_error);
1150         host_stats->macrx_frame_discarded =
1151                         le64_to_cpu(ql_iscsi_stats->mac_rx_frame_discarded);
1152         host_stats->macrx_frames_dropped =
1153                         le64_to_cpu(ql_iscsi_stats->mac_rx_frames_dropped);
1154         host_stats->mac_crc_error = le64_to_cpu(ql_iscsi_stats->mac_crc_error);
1155         host_stats->mac_encoding_error =
1156                         le64_to_cpu(ql_iscsi_stats->mac_encoding_error);
1157         host_stats->macrx_length_error_large =
1158                         le64_to_cpu(ql_iscsi_stats->mac_rx_length_error_large);
1159         host_stats->macrx_length_error_small =
1160                         le64_to_cpu(ql_iscsi_stats->mac_rx_length_error_small);
1161         host_stats->macrx_multicast_frames =
1162                         le64_to_cpu(ql_iscsi_stats->mac_rx_multicast_frames);
1163         host_stats->macrx_broadcast_frames =
1164                         le64_to_cpu(ql_iscsi_stats->mac_rx_broadcast_frames);
1165         host_stats->iptx_packets = le64_to_cpu(ql_iscsi_stats->ip_tx_packets);
1166         host_stats->iptx_bytes = le64_to_cpu(ql_iscsi_stats->ip_tx_bytes);
1167         host_stats->iptx_fragments =
1168                         le64_to_cpu(ql_iscsi_stats->ip_tx_fragments);
1169         host_stats->iprx_packets = le64_to_cpu(ql_iscsi_stats->ip_rx_packets);
1170         host_stats->iprx_bytes = le64_to_cpu(ql_iscsi_stats->ip_rx_bytes);
1171         host_stats->iprx_fragments =
1172                         le64_to_cpu(ql_iscsi_stats->ip_rx_fragments);
1173         host_stats->ip_datagram_reassembly =
1174                         le64_to_cpu(ql_iscsi_stats->ip_datagram_reassembly);
1175         host_stats->ip_invalid_address_error =
1176                         le64_to_cpu(ql_iscsi_stats->ip_invalid_address_error);
1177         host_stats->ip_error_packets =
1178                         le64_to_cpu(ql_iscsi_stats->ip_error_packets);
1179         host_stats->ip_fragrx_overlap =
1180                         le64_to_cpu(ql_iscsi_stats->ip_fragrx_overlap);
1181         host_stats->ip_fragrx_outoforder =
1182                         le64_to_cpu(ql_iscsi_stats->ip_fragrx_outoforder);
1183         host_stats->ip_datagram_reassembly_timeout =
1184                 le64_to_cpu(ql_iscsi_stats->ip_datagram_reassembly_timeout);
1185         host_stats->ipv6tx_packets =
1186                         le64_to_cpu(ql_iscsi_stats->ipv6_tx_packets);
1187         host_stats->ipv6tx_bytes = le64_to_cpu(ql_iscsi_stats->ipv6_tx_bytes);
1188         host_stats->ipv6tx_fragments =
1189                         le64_to_cpu(ql_iscsi_stats->ipv6_tx_fragments);
1190         host_stats->ipv6rx_packets =
1191                         le64_to_cpu(ql_iscsi_stats->ipv6_rx_packets);
1192         host_stats->ipv6rx_bytes = le64_to_cpu(ql_iscsi_stats->ipv6_rx_bytes);
1193         host_stats->ipv6rx_fragments =
1194                         le64_to_cpu(ql_iscsi_stats->ipv6_rx_fragments);
1195         host_stats->ipv6_datagram_reassembly =
1196                         le64_to_cpu(ql_iscsi_stats->ipv6_datagram_reassembly);
1197         host_stats->ipv6_invalid_address_error =
1198                 le64_to_cpu(ql_iscsi_stats->ipv6_invalid_address_error);
1199         host_stats->ipv6_error_packets =
1200                         le64_to_cpu(ql_iscsi_stats->ipv6_error_packets);
1201         host_stats->ipv6_fragrx_overlap =
1202                         le64_to_cpu(ql_iscsi_stats->ipv6_fragrx_overlap);
1203         host_stats->ipv6_fragrx_outoforder =
1204                         le64_to_cpu(ql_iscsi_stats->ipv6_fragrx_outoforder);
1205         host_stats->ipv6_datagram_reassembly_timeout =
1206                 le64_to_cpu(ql_iscsi_stats->ipv6_datagram_reassembly_timeout);
1207         host_stats->tcptx_segments =
1208                         le64_to_cpu(ql_iscsi_stats->tcp_tx_segments);
1209         host_stats->tcptx_bytes = le64_to_cpu(ql_iscsi_stats->tcp_tx_bytes);
1210         host_stats->tcprx_segments =
1211                         le64_to_cpu(ql_iscsi_stats->tcp_rx_segments);
1212         host_stats->tcprx_byte = le64_to_cpu(ql_iscsi_stats->tcp_rx_byte);
1213         host_stats->tcp_duplicate_ack_retx =
1214                         le64_to_cpu(ql_iscsi_stats->tcp_duplicate_ack_retx);
1215         host_stats->tcp_retx_timer_expired =
1216                         le64_to_cpu(ql_iscsi_stats->tcp_retx_timer_expired);
1217         host_stats->tcprx_duplicate_ack =
1218                         le64_to_cpu(ql_iscsi_stats->tcp_rx_duplicate_ack);
1219         host_stats->tcprx_pure_ackr =
1220                         le64_to_cpu(ql_iscsi_stats->tcp_rx_pure_ackr);
1221         host_stats->tcptx_delayed_ack =
1222                         le64_to_cpu(ql_iscsi_stats->tcp_tx_delayed_ack);
1223         host_stats->tcptx_pure_ack =
1224                         le64_to_cpu(ql_iscsi_stats->tcp_tx_pure_ack);
1225         host_stats->tcprx_segment_error =
1226                         le64_to_cpu(ql_iscsi_stats->tcp_rx_segment_error);
1227         host_stats->tcprx_segment_outoforder =
1228                         le64_to_cpu(ql_iscsi_stats->tcp_rx_segment_outoforder);
1229         host_stats->tcprx_window_probe =
1230                         le64_to_cpu(ql_iscsi_stats->tcp_rx_window_probe);
1231         host_stats->tcprx_window_update =
1232                         le64_to_cpu(ql_iscsi_stats->tcp_rx_window_update);
1233         host_stats->tcptx_window_probe_persist =
1234                 le64_to_cpu(ql_iscsi_stats->tcp_tx_window_probe_persist);
1235         host_stats->ecc_error_correction =
1236                         le64_to_cpu(ql_iscsi_stats->ecc_error_correction);
1237         host_stats->iscsi_pdu_tx = le64_to_cpu(ql_iscsi_stats->iscsi_pdu_tx);
1238         host_stats->iscsi_data_bytes_tx =
1239                         le64_to_cpu(ql_iscsi_stats->iscsi_data_bytes_tx);
1240         host_stats->iscsi_pdu_rx = le64_to_cpu(ql_iscsi_stats->iscsi_pdu_rx);
1241         host_stats->iscsi_data_bytes_rx =
1242                         le64_to_cpu(ql_iscsi_stats->iscsi_data_bytes_rx);
1243         host_stats->iscsi_io_completed =
1244                         le64_to_cpu(ql_iscsi_stats->iscsi_io_completed);
1245         host_stats->iscsi_unexpected_io_rx =
1246                         le64_to_cpu(ql_iscsi_stats->iscsi_unexpected_io_rx);
1247         host_stats->iscsi_format_error =
1248                         le64_to_cpu(ql_iscsi_stats->iscsi_format_error);
1249         host_stats->iscsi_hdr_digest_error =
1250                         le64_to_cpu(ql_iscsi_stats->iscsi_hdr_digest_error);
1251         host_stats->iscsi_data_digest_error =
1252                         le64_to_cpu(ql_iscsi_stats->iscsi_data_digest_error);
1253         host_stats->iscsi_sequence_error =
1254                         le64_to_cpu(ql_iscsi_stats->iscsi_sequence_error);
1255 exit_host_stats:
1256         if (ql_iscsi_stats)
1257                 dma_free_coherent(&ha->pdev->dev, host_stats_size,
1258                                   ql_iscsi_stats, iscsi_stats_dma);
1259
1260         ql4_printk(KERN_INFO, ha, "%s: Get host stats done\n",
1261                    __func__);
1262         return ret;
1263 }
1264
1265 static int qla4xxx_get_iface_param(struct iscsi_iface *iface,
1266                                    enum iscsi_param_type param_type,
1267                                    int param, char *buf)
1268 {
1269         struct Scsi_Host *shost = iscsi_iface_to_shost(iface);
1270         struct scsi_qla_host *ha = to_qla_host(shost);
1271         int ival;
1272         char *pval = NULL;
1273         int len = -ENOSYS;
1274
1275         if (param_type == ISCSI_NET_PARAM) {
1276                 switch (param) {
1277                 case ISCSI_NET_PARAM_IPV4_ADDR:
1278                         len = sprintf(buf, "%pI4\n", &ha->ip_config.ip_address);
1279                         break;
1280                 case ISCSI_NET_PARAM_IPV4_SUBNET:
1281                         len = sprintf(buf, "%pI4\n",
1282                                       &ha->ip_config.subnet_mask);
1283                         break;
1284                 case ISCSI_NET_PARAM_IPV4_GW:
1285                         len = sprintf(buf, "%pI4\n", &ha->ip_config.gateway);
1286                         break;
1287                 case ISCSI_NET_PARAM_IFACE_ENABLE:
1288                         if (iface->iface_type == ISCSI_IFACE_TYPE_IPV4) {
1289                                 OP_STATE(ha->ip_config.ipv4_options,
1290                                          IPOPT_IPV4_PROTOCOL_ENABLE, pval);
1291                         } else {
1292                                 OP_STATE(ha->ip_config.ipv6_options,
1293                                          IPV6_OPT_IPV6_PROTOCOL_ENABLE, pval);
1294                         }
1295
1296                         len = sprintf(buf, "%s\n", pval);
1297                         break;
1298                 case ISCSI_NET_PARAM_IPV4_BOOTPROTO:
1299                         len = sprintf(buf, "%s\n",
1300                                       (ha->ip_config.tcp_options &
1301                                        TCPOPT_DHCP_ENABLE) ?
1302                                       "dhcp" : "static");
1303                         break;
1304                 case ISCSI_NET_PARAM_IPV6_ADDR:
1305                         if (iface->iface_num == 0)
1306                                 len = sprintf(buf, "%pI6\n",
1307                                               &ha->ip_config.ipv6_addr0);
1308                         if (iface->iface_num == 1)
1309                                 len = sprintf(buf, "%pI6\n",
1310                                               &ha->ip_config.ipv6_addr1);
1311                         break;
1312                 case ISCSI_NET_PARAM_IPV6_LINKLOCAL:
1313                         len = sprintf(buf, "%pI6\n",
1314                                       &ha->ip_config.ipv6_link_local_addr);
1315                         break;
1316                 case ISCSI_NET_PARAM_IPV6_ROUTER:
1317                         len = sprintf(buf, "%pI6\n",
1318                                       &ha->ip_config.ipv6_default_router_addr);
1319                         break;
1320                 case ISCSI_NET_PARAM_IPV6_ADDR_AUTOCFG:
1321                         pval = (ha->ip_config.ipv6_addl_options &
1322                                 IPV6_ADDOPT_NEIGHBOR_DISCOVERY_ADDR_ENABLE) ?
1323                                 "nd" : "static";
1324
1325                         len = sprintf(buf, "%s\n", pval);
1326                         break;
1327                 case ISCSI_NET_PARAM_IPV6_LINKLOCAL_AUTOCFG:
1328                         pval = (ha->ip_config.ipv6_addl_options &
1329                                 IPV6_ADDOPT_AUTOCONFIG_LINK_LOCAL_ADDR) ?
1330                                 "auto" : "static";
1331
1332                         len = sprintf(buf, "%s\n", pval);
1333                         break;
1334                 case ISCSI_NET_PARAM_VLAN_ID:
1335                         if (iface->iface_type == ISCSI_IFACE_TYPE_IPV4)
1336                                 ival = ha->ip_config.ipv4_vlan_tag &
1337                                        ISCSI_MAX_VLAN_ID;
1338                         else
1339                                 ival = ha->ip_config.ipv6_vlan_tag &
1340                                        ISCSI_MAX_VLAN_ID;
1341
1342                         len = sprintf(buf, "%d\n", ival);
1343                         break;
1344                 case ISCSI_NET_PARAM_VLAN_PRIORITY:
1345                         if (iface->iface_type == ISCSI_IFACE_TYPE_IPV4)
1346                                 ival = (ha->ip_config.ipv4_vlan_tag >> 13) &
1347                                        ISCSI_MAX_VLAN_PRIORITY;
1348                         else
1349                                 ival = (ha->ip_config.ipv6_vlan_tag >> 13) &
1350                                        ISCSI_MAX_VLAN_PRIORITY;
1351
1352                         len = sprintf(buf, "%d\n", ival);
1353                         break;
1354                 case ISCSI_NET_PARAM_VLAN_ENABLED:
1355                         if (iface->iface_type == ISCSI_IFACE_TYPE_IPV4) {
1356                                 OP_STATE(ha->ip_config.ipv4_options,
1357                                          IPOPT_VLAN_TAGGING_ENABLE, pval);
1358                         } else {
1359                                 OP_STATE(ha->ip_config.ipv6_options,
1360                                          IPV6_OPT_VLAN_TAGGING_ENABLE, pval);
1361                         }
1362                         len = sprintf(buf, "%s\n", pval);
1363                         break;
1364                 case ISCSI_NET_PARAM_MTU:
1365                         len = sprintf(buf, "%d\n", ha->ip_config.eth_mtu_size);
1366                         break;
1367                 case ISCSI_NET_PARAM_PORT:
1368                         if (iface->iface_type == ISCSI_IFACE_TYPE_IPV4)
1369                                 len = sprintf(buf, "%d\n",
1370                                               ha->ip_config.ipv4_port);
1371                         else
1372                                 len = sprintf(buf, "%d\n",
1373                                               ha->ip_config.ipv6_port);
1374                         break;
1375                 case ISCSI_NET_PARAM_IPADDR_STATE:
1376                         if (iface->iface_type == ISCSI_IFACE_TYPE_IPV4) {
1377                                 pval = iscsi_get_ipaddress_state_name(
1378                                                 ha->ip_config.ipv4_addr_state);
1379                         } else {
1380                                 if (iface->iface_num == 0)
1381                                         pval = iscsi_get_ipaddress_state_name(
1382                                                 ha->ip_config.ipv6_addr0_state);
1383                                 else if (iface->iface_num == 1)
1384                                         pval = iscsi_get_ipaddress_state_name(
1385                                                 ha->ip_config.ipv6_addr1_state);
1386                         }
1387
1388                         len = sprintf(buf, "%s\n", pval);
1389                         break;
1390                 case ISCSI_NET_PARAM_IPV6_LINKLOCAL_STATE:
1391                         pval = iscsi_get_ipaddress_state_name(
1392                                         ha->ip_config.ipv6_link_local_state);
1393                         len = sprintf(buf, "%s\n", pval);
1394                         break;
1395                 case ISCSI_NET_PARAM_IPV6_ROUTER_STATE:
1396                         pval = iscsi_get_router_state_name(
1397                                       ha->ip_config.ipv6_default_router_state);
1398                         len = sprintf(buf, "%s\n", pval);
1399                         break;
1400                 case ISCSI_NET_PARAM_DELAYED_ACK_EN:
1401                         if (iface->iface_type == ISCSI_IFACE_TYPE_IPV4) {
1402                                 OP_STATE(~ha->ip_config.tcp_options,
1403                                          TCPOPT_DELAYED_ACK_DISABLE, pval);
1404                         } else {
1405                                 OP_STATE(~ha->ip_config.ipv6_tcp_options,
1406                                          IPV6_TCPOPT_DELAYED_ACK_DISABLE, pval);
1407                         }
1408                         len = sprintf(buf, "%s\n", pval);
1409                         break;
1410                 case ISCSI_NET_PARAM_TCP_NAGLE_DISABLE:
1411                         if (iface->iface_type == ISCSI_IFACE_TYPE_IPV4) {
1412                                 OP_STATE(~ha->ip_config.tcp_options,
1413                                          TCPOPT_NAGLE_ALGO_DISABLE, pval);
1414                         } else {
1415                                 OP_STATE(~ha->ip_config.ipv6_tcp_options,
1416                                          IPV6_TCPOPT_NAGLE_ALGO_DISABLE, pval);
1417                         }
1418                         len = sprintf(buf, "%s\n", pval);
1419                         break;
1420                 case ISCSI_NET_PARAM_TCP_WSF_DISABLE:
1421                         if (iface->iface_type == ISCSI_IFACE_TYPE_IPV4) {
1422                                 OP_STATE(~ha->ip_config.tcp_options,
1423                                          TCPOPT_WINDOW_SCALE_DISABLE, pval);
1424                         } else {
1425                                 OP_STATE(~ha->ip_config.ipv6_tcp_options,
1426                                          IPV6_TCPOPT_WINDOW_SCALE_DISABLE,
1427                                          pval);
1428                         }
1429                         len = sprintf(buf, "%s\n", pval);
1430                         break;
1431                 case ISCSI_NET_PARAM_TCP_WSF:
1432                         if (iface->iface_type == ISCSI_IFACE_TYPE_IPV4)
1433                                 len = sprintf(buf, "%d\n",
1434                                               ha->ip_config.tcp_wsf);
1435                         else
1436                                 len = sprintf(buf, "%d\n",
1437                                               ha->ip_config.ipv6_tcp_wsf);
1438                         break;
1439                 case ISCSI_NET_PARAM_TCP_TIMER_SCALE:
1440                         if (iface->iface_type == ISCSI_IFACE_TYPE_IPV4)
1441                                 ival = (ha->ip_config.tcp_options &
1442                                         TCPOPT_TIMER_SCALE) >> 1;
1443                         else
1444                                 ival = (ha->ip_config.ipv6_tcp_options &
1445                                         IPV6_TCPOPT_TIMER_SCALE) >> 1;
1446
1447                         len = sprintf(buf, "%d\n", ival);
1448                         break;
1449                 case ISCSI_NET_PARAM_TCP_TIMESTAMP_EN:
1450                         if (iface->iface_type == ISCSI_IFACE_TYPE_IPV4) {
1451                                 OP_STATE(ha->ip_config.tcp_options,
1452                                          TCPOPT_TIMESTAMP_ENABLE, pval);
1453                         } else {
1454                                 OP_STATE(ha->ip_config.ipv6_tcp_options,
1455                                          IPV6_TCPOPT_TIMESTAMP_EN, pval);
1456                         }
1457                         len = sprintf(buf, "%s\n", pval);
1458                         break;
1459                 case ISCSI_NET_PARAM_CACHE_ID:
1460                         if (iface->iface_type == ISCSI_IFACE_TYPE_IPV4)
1461                                 len = sprintf(buf, "%d\n",
1462                                               ha->ip_config.ipv4_cache_id);
1463                         else
1464                                 len = sprintf(buf, "%d\n",
1465                                               ha->ip_config.ipv6_cache_id);
1466                         break;
1467                 case ISCSI_NET_PARAM_IPV4_DHCP_DNS_ADDR_EN:
1468                         OP_STATE(ha->ip_config.tcp_options,
1469                                  TCPOPT_DNS_SERVER_IP_EN, pval);
1470
1471                         len = sprintf(buf, "%s\n", pval);
1472                         break;
1473                 case ISCSI_NET_PARAM_IPV4_DHCP_SLP_DA_EN:
1474                         OP_STATE(ha->ip_config.tcp_options,
1475                                  TCPOPT_SLP_DA_INFO_EN, pval);
1476
1477                         len = sprintf(buf, "%s\n", pval);
1478                         break;
1479                 case ISCSI_NET_PARAM_IPV4_TOS_EN:
1480                         OP_STATE(ha->ip_config.ipv4_options,
1481                                  IPOPT_IPV4_TOS_EN, pval);
1482
1483                         len = sprintf(buf, "%s\n", pval);
1484                         break;
1485                 case ISCSI_NET_PARAM_IPV4_TOS:
1486                         len = sprintf(buf, "%d\n", ha->ip_config.ipv4_tos);
1487                         break;
1488                 case ISCSI_NET_PARAM_IPV4_GRAT_ARP_EN:
1489                         OP_STATE(ha->ip_config.ipv4_options,
1490                                  IPOPT_GRAT_ARP_EN, pval);
1491
1492                         len = sprintf(buf, "%s\n", pval);
1493                         break;
1494                 case ISCSI_NET_PARAM_IPV4_DHCP_ALT_CLIENT_ID_EN:
1495                         OP_STATE(ha->ip_config.ipv4_options, IPOPT_ALT_CID_EN,
1496                                  pval);
1497
1498                         len = sprintf(buf, "%s\n", pval);
1499                         break;
1500                 case ISCSI_NET_PARAM_IPV4_DHCP_ALT_CLIENT_ID:
1501                         pval = (ha->ip_config.ipv4_alt_cid_len) ?
1502                                (char *)ha->ip_config.ipv4_alt_cid : "";
1503
1504                         len = sprintf(buf, "%s\n", pval);
1505                         break;
1506                 case ISCSI_NET_PARAM_IPV4_DHCP_REQ_VENDOR_ID_EN:
1507                         OP_STATE(ha->ip_config.ipv4_options,
1508                                  IPOPT_REQ_VID_EN, pval);
1509
1510                         len = sprintf(buf, "%s\n", pval);
1511                         break;
1512                 case ISCSI_NET_PARAM_IPV4_DHCP_USE_VENDOR_ID_EN:
1513                         OP_STATE(ha->ip_config.ipv4_options,
1514                                  IPOPT_USE_VID_EN, pval);
1515
1516                         len = sprintf(buf, "%s\n", pval);
1517                         break;
1518                 case ISCSI_NET_PARAM_IPV4_DHCP_VENDOR_ID:
1519                         pval = (ha->ip_config.ipv4_vid_len) ?
1520                                (char *)ha->ip_config.ipv4_vid : "";
1521
1522                         len = sprintf(buf, "%s\n", pval);
1523                         break;
1524                 case ISCSI_NET_PARAM_IPV4_DHCP_LEARN_IQN_EN:
1525                         OP_STATE(ha->ip_config.ipv4_options,
1526                                  IPOPT_LEARN_IQN_EN, pval);
1527
1528                         len = sprintf(buf, "%s\n", pval);
1529                         break;
1530                 case ISCSI_NET_PARAM_IPV4_FRAGMENT_DISABLE:
1531                         OP_STATE(~ha->ip_config.ipv4_options,
1532                                  IPOPT_FRAGMENTATION_DISABLE, pval);
1533
1534                         len = sprintf(buf, "%s\n", pval);
1535                         break;
1536                 case ISCSI_NET_PARAM_IPV4_IN_FORWARD_EN:
1537                         OP_STATE(ha->ip_config.ipv4_options,
1538                                  IPOPT_IN_FORWARD_EN, pval);
1539
1540                         len = sprintf(buf, "%s\n", pval);
1541                         break;
1542                 case ISCSI_NET_PARAM_REDIRECT_EN:
1543                         if (iface->iface_type == ISCSI_IFACE_TYPE_IPV4) {
1544                                 OP_STATE(ha->ip_config.ipv4_options,
1545                                          IPOPT_ARP_REDIRECT_EN, pval);
1546                         } else {
1547                                 OP_STATE(ha->ip_config.ipv6_options,
1548                                          IPV6_OPT_REDIRECT_EN, pval);
1549                         }
1550                         len = sprintf(buf, "%s\n", pval);
1551                         break;
1552                 case ISCSI_NET_PARAM_IPV4_TTL:
1553                         len = sprintf(buf, "%d\n", ha->ip_config.ipv4_ttl);
1554                         break;
1555                 case ISCSI_NET_PARAM_IPV6_GRAT_NEIGHBOR_ADV_EN:
1556                         OP_STATE(ha->ip_config.ipv6_options,
1557                                  IPV6_OPT_GRAT_NEIGHBOR_ADV_EN, pval);
1558
1559                         len = sprintf(buf, "%s\n", pval);
1560                         break;
1561                 case ISCSI_NET_PARAM_IPV6_MLD_EN:
1562                         OP_STATE(ha->ip_config.ipv6_addl_options,
1563                                  IPV6_ADDOPT_MLD_EN, pval);
1564
1565                         len = sprintf(buf, "%s\n", pval);
1566                         break;
1567                 case ISCSI_NET_PARAM_IPV6_FLOW_LABEL:
1568                         len = sprintf(buf, "%u\n", ha->ip_config.ipv6_flow_lbl);
1569                         break;
1570                 case ISCSI_NET_PARAM_IPV6_TRAFFIC_CLASS:
1571                         len = sprintf(buf, "%d\n",
1572                                       ha->ip_config.ipv6_traffic_class);
1573                         break;
1574                 case ISCSI_NET_PARAM_IPV6_HOP_LIMIT:
1575                         len = sprintf(buf, "%d\n",
1576                                       ha->ip_config.ipv6_hop_limit);
1577                         break;
1578                 case ISCSI_NET_PARAM_IPV6_ND_REACHABLE_TMO:
1579                         len = sprintf(buf, "%d\n",
1580                                       ha->ip_config.ipv6_nd_reach_time);
1581                         break;
1582                 case ISCSI_NET_PARAM_IPV6_ND_REXMIT_TIME:
1583                         len = sprintf(buf, "%d\n",
1584                                       ha->ip_config.ipv6_nd_rexmit_timer);
1585                         break;
1586                 case ISCSI_NET_PARAM_IPV6_ND_STALE_TMO:
1587                         len = sprintf(buf, "%d\n",
1588                                       ha->ip_config.ipv6_nd_stale_timeout);
1589                         break;
1590                 case ISCSI_NET_PARAM_IPV6_DUP_ADDR_DETECT_CNT:
1591                         len = sprintf(buf, "%d\n",
1592                                       ha->ip_config.ipv6_dup_addr_detect_count);
1593                         break;
1594                 case ISCSI_NET_PARAM_IPV6_RTR_ADV_LINK_MTU:
1595                         len = sprintf(buf, "%d\n",
1596                                       ha->ip_config.ipv6_gw_advrt_mtu);
1597                         break;
1598                 default:
1599                         len = -ENOSYS;
1600                 }
1601         } else if (param_type == ISCSI_IFACE_PARAM) {
1602                 switch (param) {
1603                 case ISCSI_IFACE_PARAM_DEF_TASKMGMT_TMO:
1604                         len = sprintf(buf, "%d\n", ha->ip_config.def_timeout);
1605                         break;
1606                 case ISCSI_IFACE_PARAM_HDRDGST_EN:
1607                         OP_STATE(ha->ip_config.iscsi_options,
1608                                  ISCSIOPTS_HEADER_DIGEST_EN, pval);
1609
1610                         len = sprintf(buf, "%s\n", pval);
1611                         break;
1612                 case ISCSI_IFACE_PARAM_DATADGST_EN:
1613                         OP_STATE(ha->ip_config.iscsi_options,
1614                                  ISCSIOPTS_DATA_DIGEST_EN, pval);
1615
1616                         len = sprintf(buf, "%s\n", pval);
1617                         break;
1618                 case ISCSI_IFACE_PARAM_IMM_DATA_EN:
1619                         OP_STATE(ha->ip_config.iscsi_options,
1620                                  ISCSIOPTS_IMMEDIATE_DATA_EN, pval);
1621
1622                         len = sprintf(buf, "%s\n", pval);
1623                         break;
1624                 case ISCSI_IFACE_PARAM_INITIAL_R2T_EN:
1625                         OP_STATE(ha->ip_config.iscsi_options,
1626                                  ISCSIOPTS_INITIAL_R2T_EN, pval);
1627
1628                         len = sprintf(buf, "%s\n", pval);
1629                         break;
1630                 case ISCSI_IFACE_PARAM_DATASEQ_INORDER_EN:
1631                         OP_STATE(ha->ip_config.iscsi_options,
1632                                  ISCSIOPTS_DATA_SEQ_INORDER_EN, pval);
1633
1634                         len = sprintf(buf, "%s\n", pval);
1635                         break;
1636                 case ISCSI_IFACE_PARAM_PDU_INORDER_EN:
1637                         OP_STATE(ha->ip_config.iscsi_options,
1638                                  ISCSIOPTS_DATA_PDU_INORDER_EN, pval);
1639
1640                         len = sprintf(buf, "%s\n", pval);
1641                         break;
1642                 case ISCSI_IFACE_PARAM_ERL:
1643                         len = sprintf(buf, "%d\n",
1644                                       (ha->ip_config.iscsi_options &
1645                                        ISCSIOPTS_ERL));
1646                         break;
1647                 case ISCSI_IFACE_PARAM_MAX_RECV_DLENGTH:
1648                         len = sprintf(buf, "%u\n",
1649                                       ha->ip_config.iscsi_max_pdu_size *
1650                                       BYTE_UNITS);
1651                         break;
1652                 case ISCSI_IFACE_PARAM_FIRST_BURST:
1653                         len = sprintf(buf, "%u\n",
1654                                       ha->ip_config.iscsi_first_burst_len *
1655                                       BYTE_UNITS);
1656                         break;
1657                 case ISCSI_IFACE_PARAM_MAX_R2T:
1658                         len = sprintf(buf, "%d\n",
1659                                       ha->ip_config.iscsi_max_outstnd_r2t);
1660                         break;
1661                 case ISCSI_IFACE_PARAM_MAX_BURST:
1662                         len = sprintf(buf, "%u\n",
1663                                       ha->ip_config.iscsi_max_burst_len *
1664                                       BYTE_UNITS);
1665                         break;
1666                 case ISCSI_IFACE_PARAM_CHAP_AUTH_EN:
1667                         OP_STATE(ha->ip_config.iscsi_options,
1668                                  ISCSIOPTS_CHAP_AUTH_EN, pval);
1669
1670                         len = sprintf(buf, "%s\n", pval);
1671                         break;
1672                 case ISCSI_IFACE_PARAM_BIDI_CHAP_EN:
1673                         OP_STATE(ha->ip_config.iscsi_options,
1674                                  ISCSIOPTS_BIDI_CHAP_EN, pval);
1675
1676                         len = sprintf(buf, "%s\n", pval);
1677                         break;
1678                 case ISCSI_IFACE_PARAM_DISCOVERY_AUTH_OPTIONAL:
1679                         OP_STATE(ha->ip_config.iscsi_options,
1680                                  ISCSIOPTS_DISCOVERY_AUTH_EN, pval);
1681
1682                         len = sprintf(buf, "%s\n", pval);
1683                         break;
1684                 case ISCSI_IFACE_PARAM_DISCOVERY_LOGOUT_EN:
1685                         OP_STATE(ha->ip_config.iscsi_options,
1686                                  ISCSIOPTS_DISCOVERY_LOGOUT_EN, pval);
1687
1688                         len = sprintf(buf, "%s\n", pval);
1689                         break;
1690                 case ISCSI_IFACE_PARAM_STRICT_LOGIN_COMP_EN:
1691                         OP_STATE(ha->ip_config.iscsi_options,
1692                                  ISCSIOPTS_STRICT_LOGIN_COMP_EN, pval);
1693
1694                         len = sprintf(buf, "%s\n", pval);
1695                         break;
1696                 case ISCSI_IFACE_PARAM_INITIATOR_NAME:
1697                         len = sprintf(buf, "%s\n", ha->ip_config.iscsi_name);
1698                         break;
1699                 default:
1700                         len = -ENOSYS;
1701                 }
1702         }
1703
1704         return len;
1705 }
1706
1707 static struct iscsi_endpoint *
1708 qla4xxx_ep_connect(struct Scsi_Host *shost, struct sockaddr *dst_addr,
1709                    int non_blocking)
1710 {
1711         int ret;
1712         struct iscsi_endpoint *ep;
1713         struct qla_endpoint *qla_ep;
1714         struct scsi_qla_host *ha;
1715         struct sockaddr_in *addr;
1716         struct sockaddr_in6 *addr6;
1717
1718         if (!shost) {
1719                 ret = -ENXIO;
1720                 pr_err("%s: shost is NULL\n", __func__);
1721                 return ERR_PTR(ret);
1722         }
1723
1724         ha = iscsi_host_priv(shost);
1725         ep = iscsi_create_endpoint(sizeof(struct qla_endpoint));
1726         if (!ep) {
1727                 ret = -ENOMEM;
1728                 return ERR_PTR(ret);
1729         }
1730
1731         qla_ep = ep->dd_data;
1732         memset(qla_ep, 0, sizeof(struct qla_endpoint));
1733         if (dst_addr->sa_family == AF_INET) {
1734                 memcpy(&qla_ep->dst_addr, dst_addr, sizeof(struct sockaddr_in));
1735                 addr = (struct sockaddr_in *)&qla_ep->dst_addr;
1736                 DEBUG2(ql4_printk(KERN_INFO, ha, "%s: %pI4\n", __func__,
1737                                   (char *)&addr->sin_addr));
1738         } else if (dst_addr->sa_family == AF_INET6) {
1739                 memcpy(&qla_ep->dst_addr, dst_addr,
1740                        sizeof(struct sockaddr_in6));
1741                 addr6 = (struct sockaddr_in6 *)&qla_ep->dst_addr;
1742                 DEBUG2(ql4_printk(KERN_INFO, ha, "%s: %pI6\n", __func__,
1743                                   (char *)&addr6->sin6_addr));
1744         } else {
1745                 ql4_printk(KERN_WARNING, ha, "%s: Invalid endpoint\n",
1746                            __func__);
1747         }
1748
1749         qla_ep->host = shost;
1750
1751         return ep;
1752 }
1753
1754 static int qla4xxx_ep_poll(struct iscsi_endpoint *ep, int timeout_ms)
1755 {
1756         struct qla_endpoint *qla_ep;
1757         struct scsi_qla_host *ha;
1758         int ret = 0;
1759
1760         qla_ep = ep->dd_data;
1761         ha = to_qla_host(qla_ep->host);
1762         DEBUG2(pr_info_ratelimited("%s: host: %ld\n", __func__, ha->host_no));
1763
1764         if (adapter_up(ha) && !test_bit(AF_BUILD_DDB_LIST, &ha->flags))
1765                 ret = 1;
1766
1767         return ret;
1768 }
1769
1770 static void qla4xxx_ep_disconnect(struct iscsi_endpoint *ep)
1771 {
1772         struct qla_endpoint *qla_ep;
1773         struct scsi_qla_host *ha;
1774
1775         qla_ep = ep->dd_data;
1776         ha = to_qla_host(qla_ep->host);
1777         DEBUG2(ql4_printk(KERN_INFO, ha, "%s: host: %ld\n", __func__,
1778                           ha->host_no));
1779         iscsi_destroy_endpoint(ep);
1780 }
1781
1782 static int qla4xxx_get_ep_param(struct iscsi_endpoint *ep,
1783                                 enum iscsi_param param,
1784                                 char *buf)
1785 {
1786         struct qla_endpoint *qla_ep = ep->dd_data;
1787         struct sockaddr *dst_addr;
1788         struct scsi_qla_host *ha;
1789
1790         if (!qla_ep)
1791                 return -ENOTCONN;
1792
1793         ha = to_qla_host(qla_ep->host);
1794         DEBUG2(ql4_printk(KERN_INFO, ha, "%s: host: %ld\n", __func__,
1795                           ha->host_no));
1796
1797         switch (param) {
1798         case ISCSI_PARAM_CONN_PORT:
1799         case ISCSI_PARAM_CONN_ADDRESS:
1800                 dst_addr = (struct sockaddr *)&qla_ep->dst_addr;
1801                 if (!dst_addr)
1802                         return -ENOTCONN;
1803
1804                 return iscsi_conn_get_addr_param((struct sockaddr_storage *)
1805                                                  &qla_ep->dst_addr, param, buf);
1806         default:
1807                 return -ENOSYS;
1808         }
1809 }
1810
1811 static void qla4xxx_conn_get_stats(struct iscsi_cls_conn *cls_conn,
1812                                    struct iscsi_stats *stats)
1813 {
1814         struct iscsi_session *sess;
1815         struct iscsi_cls_session *cls_sess;
1816         struct ddb_entry *ddb_entry;
1817         struct scsi_qla_host *ha;
1818         struct ql_iscsi_stats *ql_iscsi_stats;
1819         int stats_size;
1820         int ret;
1821         dma_addr_t iscsi_stats_dma;
1822
1823         cls_sess = iscsi_conn_to_session(cls_conn);
1824         sess = cls_sess->dd_data;
1825         ddb_entry = sess->dd_data;
1826         ha = ddb_entry->ha;
1827
1828         DEBUG2(ql4_printk(KERN_INFO, ha, "%s: host: %ld\n", __func__,
1829                           ha->host_no));
1830         stats_size = PAGE_ALIGN(sizeof(struct ql_iscsi_stats));
1831         /* Allocate memory */
1832         ql_iscsi_stats = dma_alloc_coherent(&ha->pdev->dev, stats_size,
1833                                             &iscsi_stats_dma, GFP_KERNEL);
1834         if (!ql_iscsi_stats) {
1835                 ql4_printk(KERN_ERR, ha,
1836                            "Unable to allocate memory for iscsi stats\n");
1837                 goto exit_get_stats;
1838         }
1839
1840         ret =  qla4xxx_get_mgmt_data(ha, ddb_entry->fw_ddb_index, stats_size,
1841                                      iscsi_stats_dma);
1842         if (ret != QLA_SUCCESS) {
1843                 ql4_printk(KERN_ERR, ha,
1844                            "Unable to retrieve iscsi stats\n");
1845                 goto free_stats;
1846         }
1847
1848         /* octets */
1849         stats->txdata_octets = le64_to_cpu(ql_iscsi_stats->tx_data_octets);
1850         stats->rxdata_octets = le64_to_cpu(ql_iscsi_stats->rx_data_octets);
1851         /* xmit pdus */
1852         stats->noptx_pdus = le32_to_cpu(ql_iscsi_stats->tx_nopout_pdus);
1853         stats->scsicmd_pdus = le32_to_cpu(ql_iscsi_stats->tx_scsi_cmd_pdus);
1854         stats->tmfcmd_pdus = le32_to_cpu(ql_iscsi_stats->tx_tmf_cmd_pdus);
1855         stats->login_pdus = le32_to_cpu(ql_iscsi_stats->tx_login_cmd_pdus);
1856         stats->text_pdus = le32_to_cpu(ql_iscsi_stats->tx_text_cmd_pdus);
1857         stats->dataout_pdus = le32_to_cpu(ql_iscsi_stats->tx_scsi_write_pdus);
1858         stats->logout_pdus = le32_to_cpu(ql_iscsi_stats->tx_logout_cmd_pdus);
1859         stats->snack_pdus = le32_to_cpu(ql_iscsi_stats->tx_snack_req_pdus);
1860         /* recv pdus */
1861         stats->noprx_pdus = le32_to_cpu(ql_iscsi_stats->rx_nopin_pdus);
1862         stats->scsirsp_pdus = le32_to_cpu(ql_iscsi_stats->rx_scsi_resp_pdus);
1863         stats->tmfrsp_pdus = le32_to_cpu(ql_iscsi_stats->rx_tmf_resp_pdus);
1864         stats->textrsp_pdus = le32_to_cpu(ql_iscsi_stats->rx_text_resp_pdus);
1865         stats->datain_pdus = le32_to_cpu(ql_iscsi_stats->rx_scsi_read_pdus);
1866         stats->logoutrsp_pdus =
1867                         le32_to_cpu(ql_iscsi_stats->rx_logout_resp_pdus);
1868         stats->r2t_pdus = le32_to_cpu(ql_iscsi_stats->rx_r2t_pdus);
1869         stats->async_pdus = le32_to_cpu(ql_iscsi_stats->rx_async_pdus);
1870         stats->rjt_pdus = le32_to_cpu(ql_iscsi_stats->rx_reject_pdus);
1871
1872 free_stats:
1873         dma_free_coherent(&ha->pdev->dev, stats_size, ql_iscsi_stats,
1874                           iscsi_stats_dma);
1875 exit_get_stats:
1876         return;
1877 }
1878
1879 static enum blk_eh_timer_return qla4xxx_eh_cmd_timed_out(struct scsi_cmnd *sc)
1880 {
1881         struct iscsi_cls_session *session;
1882         unsigned long flags;
1883         enum blk_eh_timer_return ret = BLK_EH_DONE;
1884
1885         session = starget_to_session(scsi_target(sc->device));
1886
1887         spin_lock_irqsave(&session->lock, flags);
1888         if (session->state == ISCSI_SESSION_FAILED)
1889                 ret = BLK_EH_RESET_TIMER;
1890         spin_unlock_irqrestore(&session->lock, flags);
1891
1892         return ret;
1893 }
1894
1895 static void qla4xxx_set_port_speed(struct Scsi_Host *shost)
1896 {
1897         struct scsi_qla_host *ha = to_qla_host(shost);
1898         struct iscsi_cls_host *ihost = shost->shost_data;
1899         uint32_t speed = ISCSI_PORT_SPEED_UNKNOWN;
1900
1901         qla4xxx_get_firmware_state(ha);
1902
1903         switch (ha->addl_fw_state & 0x0F00) {
1904         case FW_ADDSTATE_LINK_SPEED_10MBPS:
1905                 speed = ISCSI_PORT_SPEED_10MBPS;
1906                 break;
1907         case FW_ADDSTATE_LINK_SPEED_100MBPS:
1908                 speed = ISCSI_PORT_SPEED_100MBPS;
1909                 break;
1910         case FW_ADDSTATE_LINK_SPEED_1GBPS:
1911                 speed = ISCSI_PORT_SPEED_1GBPS;
1912                 break;
1913         case FW_ADDSTATE_LINK_SPEED_10GBPS:
1914                 speed = ISCSI_PORT_SPEED_10GBPS;
1915                 break;
1916         }
1917         ihost->port_speed = speed;
1918 }
1919
1920 static void qla4xxx_set_port_state(struct Scsi_Host *shost)
1921 {
1922         struct scsi_qla_host *ha = to_qla_host(shost);
1923         struct iscsi_cls_host *ihost = shost->shost_data;
1924         uint32_t state = ISCSI_PORT_STATE_DOWN;
1925
1926         if (test_bit(AF_LINK_UP, &ha->flags))
1927                 state = ISCSI_PORT_STATE_UP;
1928
1929         ihost->port_state = state;
1930 }
1931
1932 static int qla4xxx_host_get_param(struct Scsi_Host *shost,
1933                                   enum iscsi_host_param param, char *buf)
1934 {
1935         struct scsi_qla_host *ha = to_qla_host(shost);
1936         int len;
1937
1938         switch (param) {
1939         case ISCSI_HOST_PARAM_HWADDRESS:
1940                 len = sysfs_format_mac(buf, ha->my_mac, MAC_ADDR_LEN);
1941                 break;
1942         case ISCSI_HOST_PARAM_IPADDRESS:
1943                 len = sprintf(buf, "%pI4\n", &ha->ip_config.ip_address);
1944                 break;
1945         case ISCSI_HOST_PARAM_INITIATOR_NAME:
1946                 len = sprintf(buf, "%s\n", ha->name_string);
1947                 break;
1948         case ISCSI_HOST_PARAM_PORT_STATE:
1949                 qla4xxx_set_port_state(shost);
1950                 len = sprintf(buf, "%s\n", iscsi_get_port_state_name(shost));
1951                 break;
1952         case ISCSI_HOST_PARAM_PORT_SPEED:
1953                 qla4xxx_set_port_speed(shost);
1954                 len = sprintf(buf, "%s\n", iscsi_get_port_speed_name(shost));
1955                 break;
1956         default:
1957                 return -ENOSYS;
1958         }
1959
1960         return len;
1961 }
1962
1963 static void qla4xxx_create_ipv4_iface(struct scsi_qla_host *ha)
1964 {
1965         if (ha->iface_ipv4)
1966                 return;
1967
1968         /* IPv4 */
1969         ha->iface_ipv4 = iscsi_create_iface(ha->host,
1970                                             &qla4xxx_iscsi_transport,
1971                                             ISCSI_IFACE_TYPE_IPV4, 0, 0);
1972         if (!ha->iface_ipv4)
1973                 ql4_printk(KERN_ERR, ha, "Could not create IPv4 iSCSI "
1974                            "iface0.\n");
1975 }
1976
1977 static void qla4xxx_create_ipv6_iface(struct scsi_qla_host *ha)
1978 {
1979         if (!ha->iface_ipv6_0)
1980                 /* IPv6 iface-0 */
1981                 ha->iface_ipv6_0 = iscsi_create_iface(ha->host,
1982                                                       &qla4xxx_iscsi_transport,
1983                                                       ISCSI_IFACE_TYPE_IPV6, 0,
1984                                                       0);
1985         if (!ha->iface_ipv6_0)
1986                 ql4_printk(KERN_ERR, ha, "Could not create IPv6 iSCSI "
1987                            "iface0.\n");
1988
1989         if (!ha->iface_ipv6_1)
1990                 /* IPv6 iface-1 */
1991                 ha->iface_ipv6_1 = iscsi_create_iface(ha->host,
1992                                                       &qla4xxx_iscsi_transport,
1993                                                       ISCSI_IFACE_TYPE_IPV6, 1,
1994                                                       0);
1995         if (!ha->iface_ipv6_1)
1996                 ql4_printk(KERN_ERR, ha, "Could not create IPv6 iSCSI "
1997                            "iface1.\n");
1998 }
1999
2000 static void qla4xxx_create_ifaces(struct scsi_qla_host *ha)
2001 {
2002         if (ha->ip_config.ipv4_options & IPOPT_IPV4_PROTOCOL_ENABLE)
2003                 qla4xxx_create_ipv4_iface(ha);
2004
2005         if (ha->ip_config.ipv6_options & IPV6_OPT_IPV6_PROTOCOL_ENABLE)
2006                 qla4xxx_create_ipv6_iface(ha);
2007 }
2008
2009 static void qla4xxx_destroy_ipv4_iface(struct scsi_qla_host *ha)
2010 {
2011         if (ha->iface_ipv4) {
2012                 iscsi_destroy_iface(ha->iface_ipv4);
2013                 ha->iface_ipv4 = NULL;
2014         }
2015 }
2016
2017 static void qla4xxx_destroy_ipv6_iface(struct scsi_qla_host *ha)
2018 {
2019         if (ha->iface_ipv6_0) {
2020                 iscsi_destroy_iface(ha->iface_ipv6_0);
2021                 ha->iface_ipv6_0 = NULL;
2022         }
2023         if (ha->iface_ipv6_1) {
2024                 iscsi_destroy_iface(ha->iface_ipv6_1);
2025                 ha->iface_ipv6_1 = NULL;
2026         }
2027 }
2028
2029 static void qla4xxx_destroy_ifaces(struct scsi_qla_host *ha)
2030 {
2031         qla4xxx_destroy_ipv4_iface(ha);
2032         qla4xxx_destroy_ipv6_iface(ha);
2033 }
2034
2035 static void qla4xxx_set_ipv6(struct scsi_qla_host *ha,
2036                              struct iscsi_iface_param_info *iface_param,
2037                              struct addr_ctrl_blk *init_fw_cb)
2038 {
2039         /*
2040          * iface_num 0 is valid for IPv6 Addr, linklocal, router, autocfg.
2041          * iface_num 1 is valid only for IPv6 Addr.
2042          */
2043         switch (iface_param->param) {
2044         case ISCSI_NET_PARAM_IPV6_ADDR:
2045                 if (iface_param->iface_num & 0x1)
2046                         /* IPv6 Addr 1 */
2047                         memcpy(init_fw_cb->ipv6_addr1, iface_param->value,
2048                                sizeof(init_fw_cb->ipv6_addr1));
2049                 else
2050                         /* IPv6 Addr 0 */
2051                         memcpy(init_fw_cb->ipv6_addr0, iface_param->value,
2052                                sizeof(init_fw_cb->ipv6_addr0));
2053                 break;
2054         case ISCSI_NET_PARAM_IPV6_LINKLOCAL:
2055                 if (iface_param->iface_num & 0x1)
2056                         break;
2057                 memcpy(init_fw_cb->ipv6_if_id, &iface_param->value[8],
2058                        sizeof(init_fw_cb->ipv6_if_id));
2059                 break;
2060         case ISCSI_NET_PARAM_IPV6_ROUTER:
2061                 if (iface_param->iface_num & 0x1)
2062                         break;
2063                 memcpy(init_fw_cb->ipv6_dflt_rtr_addr, iface_param->value,
2064                        sizeof(init_fw_cb->ipv6_dflt_rtr_addr));
2065                 break;
2066         case ISCSI_NET_PARAM_IPV6_ADDR_AUTOCFG:
2067                 /* Autocfg applies to even interface */
2068                 if (iface_param->iface_num & 0x1)
2069                         break;
2070
2071                 if (iface_param->value[0] == ISCSI_IPV6_AUTOCFG_DISABLE)
2072                         init_fw_cb->ipv6_addtl_opts &=
2073                                 cpu_to_le16(
2074                                   ~IPV6_ADDOPT_NEIGHBOR_DISCOVERY_ADDR_ENABLE);
2075                 else if (iface_param->value[0] == ISCSI_IPV6_AUTOCFG_ND_ENABLE)
2076                         init_fw_cb->ipv6_addtl_opts |=
2077                                 cpu_to_le16(
2078                                   IPV6_ADDOPT_NEIGHBOR_DISCOVERY_ADDR_ENABLE);
2079                 else
2080                         ql4_printk(KERN_ERR, ha,
2081                                    "Invalid autocfg setting for IPv6 addr\n");
2082                 break;
2083         case ISCSI_NET_PARAM_IPV6_LINKLOCAL_AUTOCFG:
2084                 /* Autocfg applies to even interface */
2085                 if (iface_param->iface_num & 0x1)
2086                         break;
2087
2088                 if (iface_param->value[0] ==
2089                     ISCSI_IPV6_LINKLOCAL_AUTOCFG_ENABLE)
2090                         init_fw_cb->ipv6_addtl_opts |= cpu_to_le16(
2091                                         IPV6_ADDOPT_AUTOCONFIG_LINK_LOCAL_ADDR);
2092                 else if (iface_param->value[0] ==
2093                          ISCSI_IPV6_LINKLOCAL_AUTOCFG_DISABLE)
2094                         init_fw_cb->ipv6_addtl_opts &= cpu_to_le16(
2095                                        ~IPV6_ADDOPT_AUTOCONFIG_LINK_LOCAL_ADDR);
2096                 else
2097                         ql4_printk(KERN_ERR, ha,
2098                                    "Invalid autocfg setting for IPv6 linklocal addr\n");
2099                 break;
2100         case ISCSI_NET_PARAM_IPV6_ROUTER_AUTOCFG:
2101                 /* Autocfg applies to even interface */
2102                 if (iface_param->iface_num & 0x1)
2103                         break;
2104
2105                 if (iface_param->value[0] == ISCSI_IPV6_ROUTER_AUTOCFG_ENABLE)
2106                         memset(init_fw_cb->ipv6_dflt_rtr_addr, 0,
2107                                sizeof(init_fw_cb->ipv6_dflt_rtr_addr));
2108                 break;
2109         case ISCSI_NET_PARAM_IFACE_ENABLE:
2110                 if (iface_param->value[0] == ISCSI_IFACE_ENABLE) {
2111                         init_fw_cb->ipv6_opts |=
2112                                 cpu_to_le16(IPV6_OPT_IPV6_PROTOCOL_ENABLE);
2113                         qla4xxx_create_ipv6_iface(ha);
2114                 } else {
2115                         init_fw_cb->ipv6_opts &=
2116                                 cpu_to_le16(~IPV6_OPT_IPV6_PROTOCOL_ENABLE &
2117                                             0xFFFF);
2118                         qla4xxx_destroy_ipv6_iface(ha);
2119                 }
2120                 break;
2121         case ISCSI_NET_PARAM_VLAN_TAG:
2122                 if (iface_param->len != sizeof(init_fw_cb->ipv6_vlan_tag))
2123                         break;
2124                 init_fw_cb->ipv6_vlan_tag =
2125                                 cpu_to_be16(*(uint16_t *)iface_param->value);
2126                 break;
2127         case ISCSI_NET_PARAM_VLAN_ENABLED:
2128                 if (iface_param->value[0] == ISCSI_VLAN_ENABLE)
2129                         init_fw_cb->ipv6_opts |=
2130                                 cpu_to_le16(IPV6_OPT_VLAN_TAGGING_ENABLE);
2131                 else
2132                         init_fw_cb->ipv6_opts &=
2133                                 cpu_to_le16(~IPV6_OPT_VLAN_TAGGING_ENABLE);
2134                 break;
2135         case ISCSI_NET_PARAM_MTU:
2136                 init_fw_cb->eth_mtu_size =
2137                                 cpu_to_le16(*(uint16_t *)iface_param->value);
2138                 break;
2139         case ISCSI_NET_PARAM_PORT:
2140                 /* Autocfg applies to even interface */
2141                 if (iface_param->iface_num & 0x1)
2142                         break;
2143
2144                 init_fw_cb->ipv6_port =
2145                                 cpu_to_le16(*(uint16_t *)iface_param->value);
2146                 break;
2147         case ISCSI_NET_PARAM_DELAYED_ACK_EN:
2148                 if (iface_param->iface_num & 0x1)
2149                         break;
2150                 if (iface_param->value[0] == ISCSI_NET_PARAM_DISABLE)
2151                         init_fw_cb->ipv6_tcp_opts |=
2152                                 cpu_to_le16(IPV6_TCPOPT_DELAYED_ACK_DISABLE);
2153                 else
2154                         init_fw_cb->ipv6_tcp_opts &=
2155                                 cpu_to_le16(~IPV6_TCPOPT_DELAYED_ACK_DISABLE &
2156                                             0xFFFF);
2157                 break;
2158         case ISCSI_NET_PARAM_TCP_NAGLE_DISABLE:
2159                 if (iface_param->iface_num & 0x1)
2160                         break;
2161                 if (iface_param->value[0] == ISCSI_NET_PARAM_DISABLE)
2162                         init_fw_cb->ipv6_tcp_opts |=
2163                                 cpu_to_le16(IPV6_TCPOPT_NAGLE_ALGO_DISABLE);
2164                 else
2165                         init_fw_cb->ipv6_tcp_opts &=
2166                                 cpu_to_le16(~IPV6_TCPOPT_NAGLE_ALGO_DISABLE);
2167                 break;
2168         case ISCSI_NET_PARAM_TCP_WSF_DISABLE:
2169                 if (iface_param->iface_num & 0x1)
2170                         break;
2171                 if (iface_param->value[0] == ISCSI_NET_PARAM_DISABLE)
2172                         init_fw_cb->ipv6_tcp_opts |=
2173                                 cpu_to_le16(IPV6_TCPOPT_WINDOW_SCALE_DISABLE);
2174                 else
2175                         init_fw_cb->ipv6_tcp_opts &=
2176                                 cpu_to_le16(~IPV6_TCPOPT_WINDOW_SCALE_DISABLE);
2177                 break;
2178         case ISCSI_NET_PARAM_TCP_WSF:
2179                 if (iface_param->iface_num & 0x1)
2180                         break;
2181                 init_fw_cb->ipv6_tcp_wsf = iface_param->value[0];
2182                 break;
2183         case ISCSI_NET_PARAM_TCP_TIMER_SCALE:
2184                 if (iface_param->iface_num & 0x1)
2185                         break;
2186                 init_fw_cb->ipv6_tcp_opts &=
2187                                         cpu_to_le16(~IPV6_TCPOPT_TIMER_SCALE);
2188                 init_fw_cb->ipv6_tcp_opts |=
2189                                 cpu_to_le16((iface_param->value[0] << 1) &
2190                                             IPV6_TCPOPT_TIMER_SCALE);
2191                 break;
2192         case ISCSI_NET_PARAM_TCP_TIMESTAMP_EN:
2193                 if (iface_param->iface_num & 0x1)
2194                         break;
2195                 if (iface_param->value[0] == ISCSI_NET_PARAM_ENABLE)
2196                         init_fw_cb->ipv6_tcp_opts |=
2197                                 cpu_to_le16(IPV6_TCPOPT_TIMESTAMP_EN);
2198                 else
2199                         init_fw_cb->ipv6_tcp_opts &=
2200                                 cpu_to_le16(~IPV6_TCPOPT_TIMESTAMP_EN);
2201                 break;
2202         case ISCSI_NET_PARAM_IPV6_GRAT_NEIGHBOR_ADV_EN:
2203                 if (iface_param->iface_num & 0x1)
2204                         break;
2205                 if (iface_param->value[0] == ISCSI_NET_PARAM_ENABLE)
2206                         init_fw_cb->ipv6_opts |=
2207                                 cpu_to_le16(IPV6_OPT_GRAT_NEIGHBOR_ADV_EN);
2208                 else
2209                         init_fw_cb->ipv6_opts &=
2210                                 cpu_to_le16(~IPV6_OPT_GRAT_NEIGHBOR_ADV_EN);
2211                 break;
2212         case ISCSI_NET_PARAM_REDIRECT_EN:
2213                 if (iface_param->iface_num & 0x1)
2214                         break;
2215                 if (iface_param->value[0] == ISCSI_NET_PARAM_ENABLE)
2216                         init_fw_cb->ipv6_opts |=
2217                                 cpu_to_le16(IPV6_OPT_REDIRECT_EN);
2218                 else
2219                         init_fw_cb->ipv6_opts &=
2220                                 cpu_to_le16(~IPV6_OPT_REDIRECT_EN);
2221                 break;
2222         case ISCSI_NET_PARAM_IPV6_MLD_EN:
2223                 if (iface_param->iface_num & 0x1)
2224                         break;
2225                 if (iface_param->value[0] == ISCSI_NET_PARAM_ENABLE)
2226                         init_fw_cb->ipv6_addtl_opts |=
2227                                 cpu_to_le16(IPV6_ADDOPT_MLD_EN);
2228                 else
2229                         init_fw_cb->ipv6_addtl_opts &=
2230                                 cpu_to_le16(~IPV6_ADDOPT_MLD_EN);
2231                 break;
2232         case ISCSI_NET_PARAM_IPV6_FLOW_LABEL:
2233                 if (iface_param->iface_num & 0x1)
2234                         break;
2235                 init_fw_cb->ipv6_flow_lbl =
2236                                 cpu_to_le16(*(uint16_t *)iface_param->value);
2237                 break;
2238         case ISCSI_NET_PARAM_IPV6_TRAFFIC_CLASS:
2239                 if (iface_param->iface_num & 0x1)
2240                         break;
2241                 init_fw_cb->ipv6_traffic_class = iface_param->value[0];
2242                 break;
2243         case ISCSI_NET_PARAM_IPV6_HOP_LIMIT:
2244                 if (iface_param->iface_num & 0x1)
2245                         break;
2246                 init_fw_cb->ipv6_hop_limit = iface_param->value[0];
2247                 break;
2248         case ISCSI_NET_PARAM_IPV6_ND_REACHABLE_TMO:
2249                 if (iface_param->iface_num & 0x1)
2250                         break;
2251                 init_fw_cb->ipv6_nd_reach_time =
2252                                 cpu_to_le32(*(uint32_t *)iface_param->value);
2253                 break;
2254         case ISCSI_NET_PARAM_IPV6_ND_REXMIT_TIME:
2255                 if (iface_param->iface_num & 0x1)
2256                         break;
2257                 init_fw_cb->ipv6_nd_rexmit_timer =
2258                                 cpu_to_le32(*(uint32_t *)iface_param->value);
2259                 break;
2260         case ISCSI_NET_PARAM_IPV6_ND_STALE_TMO:
2261                 if (iface_param->iface_num & 0x1)
2262                         break;
2263                 init_fw_cb->ipv6_nd_stale_timeout =
2264                                 cpu_to_le32(*(uint32_t *)iface_param->value);
2265                 break;
2266         case ISCSI_NET_PARAM_IPV6_DUP_ADDR_DETECT_CNT:
2267                 if (iface_param->iface_num & 0x1)
2268                         break;
2269                 init_fw_cb->ipv6_dup_addr_detect_count = iface_param->value[0];
2270                 break;
2271         case ISCSI_NET_PARAM_IPV6_RTR_ADV_LINK_MTU:
2272                 if (iface_param->iface_num & 0x1)
2273                         break;
2274                 init_fw_cb->ipv6_gw_advrt_mtu =
2275                                 cpu_to_le32(*(uint32_t *)iface_param->value);
2276                 break;
2277         default:
2278                 ql4_printk(KERN_ERR, ha, "Unknown IPv6 param = %d\n",
2279                            iface_param->param);
2280                 break;
2281         }
2282 }
2283
2284 static void qla4xxx_set_ipv4(struct scsi_qla_host *ha,
2285                              struct iscsi_iface_param_info *iface_param,
2286                              struct addr_ctrl_blk *init_fw_cb)
2287 {
2288         switch (iface_param->param) {
2289         case ISCSI_NET_PARAM_IPV4_ADDR:
2290                 memcpy(init_fw_cb->ipv4_addr, iface_param->value,
2291                        sizeof(init_fw_cb->ipv4_addr));
2292                 break;
2293         case ISCSI_NET_PARAM_IPV4_SUBNET:
2294                 memcpy(init_fw_cb->ipv4_subnet, iface_param->value,
2295                        sizeof(init_fw_cb->ipv4_subnet));
2296                 break;
2297         case ISCSI_NET_PARAM_IPV4_GW:
2298                 memcpy(init_fw_cb->ipv4_gw_addr, iface_param->value,
2299                        sizeof(init_fw_cb->ipv4_gw_addr));
2300                 break;
2301         case ISCSI_NET_PARAM_IPV4_BOOTPROTO:
2302                 if (iface_param->value[0] == ISCSI_BOOTPROTO_DHCP)
2303                         init_fw_cb->ipv4_tcp_opts |=
2304                                         cpu_to_le16(TCPOPT_DHCP_ENABLE);
2305                 else if (iface_param->value[0] == ISCSI_BOOTPROTO_STATIC)
2306                         init_fw_cb->ipv4_tcp_opts &=
2307                                         cpu_to_le16(~TCPOPT_DHCP_ENABLE);
2308                 else
2309                         ql4_printk(KERN_ERR, ha, "Invalid IPv4 bootproto\n");
2310                 break;
2311         case ISCSI_NET_PARAM_IFACE_ENABLE:
2312                 if (iface_param->value[0] == ISCSI_IFACE_ENABLE) {
2313                         init_fw_cb->ipv4_ip_opts |=
2314                                 cpu_to_le16(IPOPT_IPV4_PROTOCOL_ENABLE);
2315                         qla4xxx_create_ipv4_iface(ha);
2316                 } else {
2317                         init_fw_cb->ipv4_ip_opts &=
2318                                 cpu_to_le16(~IPOPT_IPV4_PROTOCOL_ENABLE &
2319                                             0xFFFF);
2320                         qla4xxx_destroy_ipv4_iface(ha);
2321                 }
2322                 break;
2323         case ISCSI_NET_PARAM_VLAN_TAG:
2324                 if (iface_param->len != sizeof(init_fw_cb->ipv4_vlan_tag))
2325                         break;
2326                 init_fw_cb->ipv4_vlan_tag =
2327                                 cpu_to_be16(*(uint16_t *)iface_param->value);
2328                 break;
2329         case ISCSI_NET_PARAM_VLAN_ENABLED:
2330                 if (iface_param->value[0] == ISCSI_VLAN_ENABLE)
2331                         init_fw_cb->ipv4_ip_opts |=
2332                                         cpu_to_le16(IPOPT_VLAN_TAGGING_ENABLE);
2333                 else
2334                         init_fw_cb->ipv4_ip_opts &=
2335                                         cpu_to_le16(~IPOPT_VLAN_TAGGING_ENABLE);
2336                 break;
2337         case ISCSI_NET_PARAM_MTU:
2338                 init_fw_cb->eth_mtu_size =
2339                                 cpu_to_le16(*(uint16_t *)iface_param->value);
2340                 break;
2341         case ISCSI_NET_PARAM_PORT:
2342                 init_fw_cb->ipv4_port =
2343                                 cpu_to_le16(*(uint16_t *)iface_param->value);
2344                 break;
2345         case ISCSI_NET_PARAM_DELAYED_ACK_EN:
2346                 if (iface_param->iface_num & 0x1)
2347                         break;
2348                 if (iface_param->value[0] == ISCSI_NET_PARAM_DISABLE)
2349                         init_fw_cb->ipv4_tcp_opts |=
2350                                 cpu_to_le16(TCPOPT_DELAYED_ACK_DISABLE);
2351                 else
2352                         init_fw_cb->ipv4_tcp_opts &=
2353                                 cpu_to_le16(~TCPOPT_DELAYED_ACK_DISABLE &
2354                                             0xFFFF);
2355                 break;
2356         case ISCSI_NET_PARAM_TCP_NAGLE_DISABLE:
2357                 if (iface_param->iface_num & 0x1)
2358                         break;
2359                 if (iface_param->value[0] == ISCSI_NET_PARAM_DISABLE)
2360                         init_fw_cb->ipv4_tcp_opts |=
2361                                 cpu_to_le16(TCPOPT_NAGLE_ALGO_DISABLE);
2362                 else
2363                         init_fw_cb->ipv4_tcp_opts &=
2364                                 cpu_to_le16(~TCPOPT_NAGLE_ALGO_DISABLE);
2365                 break;
2366         case ISCSI_NET_PARAM_TCP_WSF_DISABLE:
2367                 if (iface_param->iface_num & 0x1)
2368                         break;
2369                 if (iface_param->value[0] == ISCSI_NET_PARAM_DISABLE)
2370                         init_fw_cb->ipv4_tcp_opts |=
2371                                 cpu_to_le16(TCPOPT_WINDOW_SCALE_DISABLE);
2372                 else
2373                         init_fw_cb->ipv4_tcp_opts &=
2374                                 cpu_to_le16(~TCPOPT_WINDOW_SCALE_DISABLE);
2375                 break;
2376         case ISCSI_NET_PARAM_TCP_WSF:
2377                 if (iface_param->iface_num & 0x1)
2378                         break;
2379                 init_fw_cb->ipv4_tcp_wsf = iface_param->value[0];
2380                 break;
2381         case ISCSI_NET_PARAM_TCP_TIMER_SCALE:
2382                 if (iface_param->iface_num & 0x1)
2383                         break;
2384                 init_fw_cb->ipv4_tcp_opts &= cpu_to_le16(~TCPOPT_TIMER_SCALE);
2385                 init_fw_cb->ipv4_tcp_opts |=
2386                                 cpu_to_le16((iface_param->value[0] << 1) &
2387                                             TCPOPT_TIMER_SCALE);
2388                 break;
2389         case ISCSI_NET_PARAM_TCP_TIMESTAMP_EN:
2390                 if (iface_param->iface_num & 0x1)
2391                         break;
2392                 if (iface_param->value[0] == ISCSI_NET_PARAM_ENABLE)
2393                         init_fw_cb->ipv4_tcp_opts |=
2394                                 cpu_to_le16(TCPOPT_TIMESTAMP_ENABLE);
2395                 else
2396                         init_fw_cb->ipv4_tcp_opts &=
2397                                 cpu_to_le16(~TCPOPT_TIMESTAMP_ENABLE);
2398                 break;
2399         case ISCSI_NET_PARAM_IPV4_DHCP_DNS_ADDR_EN:
2400                 if (iface_param->iface_num & 0x1)
2401                         break;
2402                 if (iface_param->value[0] == ISCSI_NET_PARAM_ENABLE)
2403                         init_fw_cb->ipv4_tcp_opts |=
2404                                 cpu_to_le16(TCPOPT_DNS_SERVER_IP_EN);
2405                 else
2406                         init_fw_cb->ipv4_tcp_opts &=
2407                                 cpu_to_le16(~TCPOPT_DNS_SERVER_IP_EN);
2408                 break;
2409         case ISCSI_NET_PARAM_IPV4_DHCP_SLP_DA_EN:
2410                 if (iface_param->iface_num & 0x1)
2411                         break;
2412                 if (iface_param->value[0] == ISCSI_NET_PARAM_ENABLE)
2413                         init_fw_cb->ipv4_tcp_opts |=
2414                                 cpu_to_le16(TCPOPT_SLP_DA_INFO_EN);
2415                 else
2416                         init_fw_cb->ipv4_tcp_opts &=
2417                                 cpu_to_le16(~TCPOPT_SLP_DA_INFO_EN);
2418                 break;
2419         case ISCSI_NET_PARAM_IPV4_TOS_EN:
2420                 if (iface_param->iface_num & 0x1)
2421                         break;
2422                 if (iface_param->value[0] == ISCSI_NET_PARAM_ENABLE)
2423                         init_fw_cb->ipv4_ip_opts |=
2424                                 cpu_to_le16(IPOPT_IPV4_TOS_EN);
2425                 else
2426                         init_fw_cb->ipv4_ip_opts &=
2427                                 cpu_to_le16(~IPOPT_IPV4_TOS_EN);
2428                 break;
2429         case ISCSI_NET_PARAM_IPV4_TOS:
2430                 if (iface_param->iface_num & 0x1)
2431                         break;
2432                 init_fw_cb->ipv4_tos = iface_param->value[0];
2433                 break;
2434         case ISCSI_NET_PARAM_IPV4_GRAT_ARP_EN:
2435                 if (iface_param->iface_num & 0x1)
2436                         break;
2437                 if (iface_param->value[0] == ISCSI_NET_PARAM_ENABLE)
2438                         init_fw_cb->ipv4_ip_opts |=
2439                                         cpu_to_le16(IPOPT_GRAT_ARP_EN);
2440                 else
2441                         init_fw_cb->ipv4_ip_opts &=
2442                                         cpu_to_le16(~IPOPT_GRAT_ARP_EN);
2443                 break;
2444         case ISCSI_NET_PARAM_IPV4_DHCP_ALT_CLIENT_ID_EN:
2445                 if (iface_param->iface_num & 0x1)
2446                         break;
2447                 if (iface_param->value[0] == ISCSI_NET_PARAM_ENABLE)
2448                         init_fw_cb->ipv4_ip_opts |=
2449                                 cpu_to_le16(IPOPT_ALT_CID_EN);
2450                 else
2451                         init_fw_cb->ipv4_ip_opts &=
2452                                 cpu_to_le16(~IPOPT_ALT_CID_EN);
2453                 break;
2454         case ISCSI_NET_PARAM_IPV4_DHCP_ALT_CLIENT_ID:
2455                 if (iface_param->iface_num & 0x1)
2456                         break;
2457                 memcpy(init_fw_cb->ipv4_dhcp_alt_cid, iface_param->value,
2458                        (sizeof(init_fw_cb->ipv4_dhcp_alt_cid) - 1));
2459                 init_fw_cb->ipv4_dhcp_alt_cid_len =
2460                                         strlen(init_fw_cb->ipv4_dhcp_alt_cid);
2461                 break;
2462         case ISCSI_NET_PARAM_IPV4_DHCP_REQ_VENDOR_ID_EN:
2463                 if (iface_param->iface_num & 0x1)
2464                         break;
2465                 if (iface_param->value[0] == ISCSI_NET_PARAM_ENABLE)
2466                         init_fw_cb->ipv4_ip_opts |=
2467                                         cpu_to_le16(IPOPT_REQ_VID_EN);
2468                 else
2469                         init_fw_cb->ipv4_ip_opts &=
2470                                         cpu_to_le16(~IPOPT_REQ_VID_EN);
2471                 break;
2472         case ISCSI_NET_PARAM_IPV4_DHCP_USE_VENDOR_ID_EN:
2473                 if (iface_param->iface_num & 0x1)
2474                         break;
2475                 if (iface_param->value[0] == ISCSI_NET_PARAM_ENABLE)
2476                         init_fw_cb->ipv4_ip_opts |=
2477                                         cpu_to_le16(IPOPT_USE_VID_EN);
2478                 else
2479                         init_fw_cb->ipv4_ip_opts &=
2480                                         cpu_to_le16(~IPOPT_USE_VID_EN);
2481                 break;
2482         case ISCSI_NET_PARAM_IPV4_DHCP_VENDOR_ID:
2483                 if (iface_param->iface_num & 0x1)
2484                         break;
2485                 memcpy(init_fw_cb->ipv4_dhcp_vid, iface_param->value,
2486                        (sizeof(init_fw_cb->ipv4_dhcp_vid) - 1));
2487                 init_fw_cb->ipv4_dhcp_vid_len =
2488                                         strlen(init_fw_cb->ipv4_dhcp_vid);
2489                 break;
2490         case ISCSI_NET_PARAM_IPV4_DHCP_LEARN_IQN_EN:
2491                 if (iface_param->iface_num & 0x1)
2492                         break;
2493                 if (iface_param->value[0] == ISCSI_NET_PARAM_ENABLE)
2494                         init_fw_cb->ipv4_ip_opts |=
2495                                         cpu_to_le16(IPOPT_LEARN_IQN_EN);
2496                 else
2497                         init_fw_cb->ipv4_ip_opts &=
2498                                         cpu_to_le16(~IPOPT_LEARN_IQN_EN);
2499                 break;
2500         case ISCSI_NET_PARAM_IPV4_FRAGMENT_DISABLE:
2501                 if (iface_param->iface_num & 0x1)
2502                         break;
2503                 if (iface_param->value[0] == ISCSI_NET_PARAM_DISABLE)
2504                         init_fw_cb->ipv4_ip_opts |=
2505                                 cpu_to_le16(IPOPT_FRAGMENTATION_DISABLE);
2506                 else
2507                         init_fw_cb->ipv4_ip_opts &=
2508                                 cpu_to_le16(~IPOPT_FRAGMENTATION_DISABLE);
2509                 break;
2510         case ISCSI_NET_PARAM_IPV4_IN_FORWARD_EN:
2511                 if (iface_param->iface_num & 0x1)
2512                         break;
2513                 if (iface_param->value[0] == ISCSI_NET_PARAM_ENABLE)
2514                         init_fw_cb->ipv4_ip_opts |=
2515                                 cpu_to_le16(IPOPT_IN_FORWARD_EN);
2516                 else
2517                         init_fw_cb->ipv4_ip_opts &=
2518                                 cpu_to_le16(~IPOPT_IN_FORWARD_EN);
2519                 break;
2520         case ISCSI_NET_PARAM_REDIRECT_EN:
2521                 if (iface_param->iface_num & 0x1)
2522                         break;
2523                 if (iface_param->value[0] == ISCSI_NET_PARAM_ENABLE)
2524                         init_fw_cb->ipv4_ip_opts |=
2525                                 cpu_to_le16(IPOPT_ARP_REDIRECT_EN);
2526                 else
2527                         init_fw_cb->ipv4_ip_opts &=
2528                                 cpu_to_le16(~IPOPT_ARP_REDIRECT_EN);
2529                 break;
2530         case ISCSI_NET_PARAM_IPV4_TTL:
2531                 if (iface_param->iface_num & 0x1)
2532                         break;
2533                 init_fw_cb->ipv4_ttl = iface_param->value[0];
2534                 break;
2535         default:
2536                 ql4_printk(KERN_ERR, ha, "Unknown IPv4 param = %d\n",
2537                            iface_param->param);
2538                 break;
2539         }
2540 }
2541
2542 static void qla4xxx_set_iscsi_param(struct scsi_qla_host *ha,
2543                                     struct iscsi_iface_param_info *iface_param,
2544                                     struct addr_ctrl_blk *init_fw_cb)
2545 {
2546         switch (iface_param->param) {
2547         case ISCSI_IFACE_PARAM_DEF_TASKMGMT_TMO:
2548                 if (iface_param->iface_num & 0x1)
2549                         break;
2550                 init_fw_cb->def_timeout =
2551                                 cpu_to_le16(*(uint16_t *)iface_param->value);
2552                 break;
2553         case ISCSI_IFACE_PARAM_HDRDGST_EN:
2554                 if (iface_param->iface_num & 0x1)
2555                         break;
2556                 if (iface_param->value[0] == ISCSI_NET_PARAM_ENABLE)
2557                         init_fw_cb->iscsi_opts |=
2558                                 cpu_to_le16(ISCSIOPTS_HEADER_DIGEST_EN);
2559                 else
2560                         init_fw_cb->iscsi_opts &=
2561                                 cpu_to_le16(~ISCSIOPTS_HEADER_DIGEST_EN);
2562                 break;
2563         case ISCSI_IFACE_PARAM_DATADGST_EN:
2564                 if (iface_param->iface_num & 0x1)
2565                         break;
2566                 if (iface_param->value[0] == ISCSI_NET_PARAM_ENABLE)
2567                         init_fw_cb->iscsi_opts |=
2568                                 cpu_to_le16(ISCSIOPTS_DATA_DIGEST_EN);
2569                 else
2570                         init_fw_cb->iscsi_opts &=
2571                                 cpu_to_le16(~ISCSIOPTS_DATA_DIGEST_EN);
2572                 break;
2573         case ISCSI_IFACE_PARAM_IMM_DATA_EN:
2574                 if (iface_param->iface_num & 0x1)
2575                         break;
2576                 if (iface_param->value[0] == ISCSI_NET_PARAM_ENABLE)
2577                         init_fw_cb->iscsi_opts |=
2578                                 cpu_to_le16(ISCSIOPTS_IMMEDIATE_DATA_EN);
2579                 else
2580                         init_fw_cb->iscsi_opts &=
2581                                 cpu_to_le16(~ISCSIOPTS_IMMEDIATE_DATA_EN);
2582                 break;
2583         case ISCSI_IFACE_PARAM_INITIAL_R2T_EN:
2584                 if (iface_param->iface_num & 0x1)
2585                         break;
2586                 if (iface_param->value[0] == ISCSI_NET_PARAM_ENABLE)
2587                         init_fw_cb->iscsi_opts |=
2588                                 cpu_to_le16(ISCSIOPTS_INITIAL_R2T_EN);
2589                 else
2590                         init_fw_cb->iscsi_opts &=
2591                                 cpu_to_le16(~ISCSIOPTS_INITIAL_R2T_EN);
2592                 break;
2593         case ISCSI_IFACE_PARAM_DATASEQ_INORDER_EN:
2594                 if (iface_param->iface_num & 0x1)
2595                         break;
2596                 if (iface_param->value[0] == ISCSI_NET_PARAM_ENABLE)
2597                         init_fw_cb->iscsi_opts |=
2598                                 cpu_to_le16(ISCSIOPTS_DATA_SEQ_INORDER_EN);
2599                 else
2600                         init_fw_cb->iscsi_opts &=
2601                                 cpu_to_le16(~ISCSIOPTS_DATA_SEQ_INORDER_EN);
2602                 break;
2603         case ISCSI_IFACE_PARAM_PDU_INORDER_EN:
2604                 if (iface_param->iface_num & 0x1)
2605                         break;
2606                 if (iface_param->value[0] == ISCSI_NET_PARAM_ENABLE)
2607                         init_fw_cb->iscsi_opts |=
2608                                 cpu_to_le16(ISCSIOPTS_DATA_PDU_INORDER_EN);
2609                 else
2610                         init_fw_cb->iscsi_opts &=
2611                                 cpu_to_le16(~ISCSIOPTS_DATA_PDU_INORDER_EN);
2612                 break;
2613         case ISCSI_IFACE_PARAM_ERL:
2614                 if (iface_param->iface_num & 0x1)
2615                         break;
2616                 init_fw_cb->iscsi_opts &= cpu_to_le16(~ISCSIOPTS_ERL);
2617                 init_fw_cb->iscsi_opts |= cpu_to_le16(iface_param->value[0] &
2618                                                       ISCSIOPTS_ERL);
2619                 break;
2620         case ISCSI_IFACE_PARAM_MAX_RECV_DLENGTH:
2621                 if (iface_param->iface_num & 0x1)
2622                         break;
2623                 init_fw_cb->iscsi_max_pdu_size =
2624                                 cpu_to_le32(*(uint32_t *)iface_param->value) /
2625                                 BYTE_UNITS;
2626                 break;
2627         case ISCSI_IFACE_PARAM_FIRST_BURST:
2628                 if (iface_param->iface_num & 0x1)
2629                         break;
2630                 init_fw_cb->iscsi_fburst_len =
2631                                 cpu_to_le32(*(uint32_t *)iface_param->value) /
2632                                 BYTE_UNITS;
2633                 break;
2634         case ISCSI_IFACE_PARAM_MAX_R2T:
2635                 if (iface_param->iface_num & 0x1)
2636                         break;
2637                 init_fw_cb->iscsi_max_outstnd_r2t =
2638                                 cpu_to_le16(*(uint16_t *)iface_param->value);
2639                 break;
2640         case ISCSI_IFACE_PARAM_MAX_BURST:
2641                 if (iface_param->iface_num & 0x1)
2642                         break;
2643                 init_fw_cb->iscsi_max_burst_len =
2644                                 cpu_to_le32(*(uint32_t *)iface_param->value) /
2645                                 BYTE_UNITS;
2646                 break;
2647         case ISCSI_IFACE_PARAM_CHAP_AUTH_EN:
2648                 if (iface_param->iface_num & 0x1)
2649                         break;
2650                 if (iface_param->value[0] == ISCSI_NET_PARAM_ENABLE)
2651                         init_fw_cb->iscsi_opts |=
2652                                 cpu_to_le16(ISCSIOPTS_CHAP_AUTH_EN);
2653                 else
2654                         init_fw_cb->iscsi_opts &=
2655                                 cpu_to_le16(~ISCSIOPTS_CHAP_AUTH_EN);
2656                 break;
2657         case ISCSI_IFACE_PARAM_BIDI_CHAP_EN:
2658                 if (iface_param->iface_num & 0x1)
2659                         break;
2660                 if (iface_param->value[0] == ISCSI_NET_PARAM_ENABLE)
2661                         init_fw_cb->iscsi_opts |=
2662                                 cpu_to_le16(ISCSIOPTS_BIDI_CHAP_EN);
2663                 else
2664                         init_fw_cb->iscsi_opts &=
2665                                 cpu_to_le16(~ISCSIOPTS_BIDI_CHAP_EN);
2666                 break;
2667         case ISCSI_IFACE_PARAM_DISCOVERY_AUTH_OPTIONAL:
2668                 if (iface_param->iface_num & 0x1)
2669                         break;
2670                 if (iface_param->value[0] == ISCSI_NET_PARAM_ENABLE)
2671                         init_fw_cb->iscsi_opts |=
2672                                 cpu_to_le16(ISCSIOPTS_DISCOVERY_AUTH_EN);
2673                 else
2674                         init_fw_cb->iscsi_opts &=
2675                                 cpu_to_le16(~ISCSIOPTS_DISCOVERY_AUTH_EN);
2676                 break;
2677         case ISCSI_IFACE_PARAM_DISCOVERY_LOGOUT_EN:
2678                 if (iface_param->iface_num & 0x1)
2679                         break;
2680                 if (iface_param->value[0] == ISCSI_NET_PARAM_ENABLE)
2681                         init_fw_cb->iscsi_opts |=
2682                                 cpu_to_le16(ISCSIOPTS_DISCOVERY_LOGOUT_EN);
2683                 else
2684                         init_fw_cb->iscsi_opts &=
2685                                 cpu_to_le16(~ISCSIOPTS_DISCOVERY_LOGOUT_EN);
2686                 break;
2687         case ISCSI_IFACE_PARAM_STRICT_LOGIN_COMP_EN:
2688                 if (iface_param->iface_num & 0x1)
2689                         break;
2690                 if (iface_param->value[0] == ISCSI_NET_PARAM_ENABLE)
2691                         init_fw_cb->iscsi_opts |=
2692                                 cpu_to_le16(ISCSIOPTS_STRICT_LOGIN_COMP_EN);
2693                 else
2694                         init_fw_cb->iscsi_opts &=
2695                                 cpu_to_le16(~ISCSIOPTS_STRICT_LOGIN_COMP_EN);
2696                 break;
2697         default:
2698                 ql4_printk(KERN_ERR, ha, "Unknown iscsi param = %d\n",
2699                            iface_param->param);
2700                 break;
2701         }
2702 }
2703
2704 static void
2705 qla4xxx_initcb_to_acb(struct addr_ctrl_blk *init_fw_cb)
2706 {
2707         struct addr_ctrl_blk_def *acb;
2708         acb = (struct addr_ctrl_blk_def *)init_fw_cb;
2709         memset(acb->reserved1, 0, sizeof(acb->reserved1));
2710         memset(acb->reserved2, 0, sizeof(acb->reserved2));
2711         memset(acb->reserved3, 0, sizeof(acb->reserved3));
2712         memset(acb->reserved4, 0, sizeof(acb->reserved4));
2713         memset(acb->reserved5, 0, sizeof(acb->reserved5));
2714         memset(acb->reserved6, 0, sizeof(acb->reserved6));
2715         memset(acb->reserved7, 0, sizeof(acb->reserved7));
2716         memset(acb->reserved8, 0, sizeof(acb->reserved8));
2717         memset(acb->reserved9, 0, sizeof(acb->reserved9));
2718         memset(acb->reserved10, 0, sizeof(acb->reserved10));
2719         memset(acb->reserved11, 0, sizeof(acb->reserved11));
2720         memset(acb->reserved12, 0, sizeof(acb->reserved12));
2721         memset(acb->reserved13, 0, sizeof(acb->reserved13));
2722         memset(acb->reserved14, 0, sizeof(acb->reserved14));
2723         memset(acb->reserved15, 0, sizeof(acb->reserved15));
2724 }
2725
2726 static int
2727 qla4xxx_iface_set_param(struct Scsi_Host *shost, void *data, uint32_t len)
2728 {
2729         struct scsi_qla_host *ha = to_qla_host(shost);
2730         int rval = 0;
2731         struct iscsi_iface_param_info *iface_param = NULL;
2732         struct addr_ctrl_blk *init_fw_cb = NULL;
2733         dma_addr_t init_fw_cb_dma;
2734         uint32_t mbox_cmd[MBOX_REG_COUNT];
2735         uint32_t mbox_sts[MBOX_REG_COUNT];
2736         uint32_t rem = len;
2737         struct nlattr *attr;
2738
2739         init_fw_cb = dma_alloc_coherent(&ha->pdev->dev,
2740                                         sizeof(struct addr_ctrl_blk),
2741                                         &init_fw_cb_dma, GFP_KERNEL);
2742         if (!init_fw_cb) {
2743                 ql4_printk(KERN_ERR, ha, "%s: Unable to alloc init_cb\n",
2744                            __func__);
2745                 return -ENOMEM;
2746         }
2747
2748         memset(&mbox_cmd, 0, sizeof(mbox_cmd));
2749         memset(&mbox_sts, 0, sizeof(mbox_sts));
2750
2751         if (qla4xxx_get_ifcb(ha, &mbox_cmd[0], &mbox_sts[0], init_fw_cb_dma)) {
2752                 ql4_printk(KERN_ERR, ha, "%s: get ifcb failed\n", __func__);
2753                 rval = -EIO;
2754                 goto exit_init_fw_cb;
2755         }
2756
2757         nla_for_each_attr(attr, data, len, rem) {
2758                 iface_param = nla_data(attr);
2759
2760                 if (iface_param->param_type == ISCSI_NET_PARAM) {
2761                         switch (iface_param->iface_type) {
2762                         case ISCSI_IFACE_TYPE_IPV4:
2763                                 switch (iface_param->iface_num) {
2764                                 case 0:
2765                                         qla4xxx_set_ipv4(ha, iface_param,
2766                                                          init_fw_cb);
2767                                         break;
2768                                 default:
2769                                 /* Cannot have more than one IPv4 interface */
2770                                         ql4_printk(KERN_ERR, ha,
2771                                                    "Invalid IPv4 iface number = %d\n",
2772                                                    iface_param->iface_num);
2773                                         break;
2774                                 }
2775                                 break;
2776                         case ISCSI_IFACE_TYPE_IPV6:
2777                                 switch (iface_param->iface_num) {
2778                                 case 0:
2779                                 case 1:
2780                                         qla4xxx_set_ipv6(ha, iface_param,
2781                                                          init_fw_cb);
2782                                         break;
2783                                 default:
2784                                 /* Cannot have more than two IPv6 interface */
2785                                         ql4_printk(KERN_ERR, ha,
2786                                                    "Invalid IPv6 iface number = %d\n",
2787                                                    iface_param->iface_num);
2788                                         break;
2789                                 }
2790                                 break;
2791                         default:
2792                                 ql4_printk(KERN_ERR, ha,
2793                                            "Invalid iface type\n");
2794                                 break;
2795                         }
2796                 } else if (iface_param->param_type == ISCSI_IFACE_PARAM) {
2797                                 qla4xxx_set_iscsi_param(ha, iface_param,
2798                                                         init_fw_cb);
2799                 } else {
2800                         continue;
2801                 }
2802         }
2803
2804         init_fw_cb->cookie = cpu_to_le32(0x11BEAD5A);
2805
2806         rval = qla4xxx_set_flash(ha, init_fw_cb_dma, FLASH_SEGMENT_IFCB,
2807                                  sizeof(struct addr_ctrl_blk),
2808                                  FLASH_OPT_RMW_COMMIT);
2809         if (rval != QLA_SUCCESS) {
2810                 ql4_printk(KERN_ERR, ha, "%s: set flash mbx failed\n",
2811                            __func__);
2812                 rval = -EIO;
2813                 goto exit_init_fw_cb;
2814         }
2815
2816         rval = qla4xxx_disable_acb(ha);
2817         if (rval != QLA_SUCCESS) {
2818                 ql4_printk(KERN_ERR, ha, "%s: disable acb mbx failed\n",
2819                            __func__);
2820                 rval = -EIO;
2821                 goto exit_init_fw_cb;
2822         }
2823
2824         wait_for_completion_timeout(&ha->disable_acb_comp,
2825                                     DISABLE_ACB_TOV * HZ);
2826
2827         qla4xxx_initcb_to_acb(init_fw_cb);
2828
2829         rval = qla4xxx_set_acb(ha, &mbox_cmd[0], &mbox_sts[0], init_fw_cb_dma);
2830         if (rval != QLA_SUCCESS) {
2831                 ql4_printk(KERN_ERR, ha, "%s: set acb mbx failed\n",
2832                            __func__);
2833                 rval = -EIO;
2834                 goto exit_init_fw_cb;
2835         }
2836
2837         memset(init_fw_cb, 0, sizeof(struct addr_ctrl_blk));
2838         qla4xxx_update_local_ifcb(ha, &mbox_cmd[0], &mbox_sts[0], init_fw_cb,
2839                                   init_fw_cb_dma);
2840
2841 exit_init_fw_cb:
2842         dma_free_coherent(&ha->pdev->dev, sizeof(struct addr_ctrl_blk),
2843                           init_fw_cb, init_fw_cb_dma);
2844
2845         return rval;
2846 }
2847
2848 static int qla4xxx_session_get_param(struct iscsi_cls_session *cls_sess,
2849                                      enum iscsi_param param, char *buf)
2850 {
2851         struct iscsi_session *sess = cls_sess->dd_data;
2852         struct ddb_entry *ddb_entry = sess->dd_data;
2853         struct scsi_qla_host *ha = ddb_entry->ha;
2854         struct iscsi_cls_conn *cls_conn = ddb_entry->conn;
2855         struct ql4_chap_table chap_tbl;
2856         int rval, len;
2857         uint16_t idx;
2858
2859         memset(&chap_tbl, 0, sizeof(chap_tbl));
2860         switch (param) {
2861         case ISCSI_PARAM_CHAP_IN_IDX:
2862                 rval = qla4xxx_get_chap_index(ha, sess->username_in,
2863                                               sess->password_in, BIDI_CHAP,
2864                                               &idx);
2865                 if (rval)
2866                         len = sprintf(buf, "\n");
2867                 else
2868                         len = sprintf(buf, "%hu\n", idx);
2869                 break;
2870         case ISCSI_PARAM_CHAP_OUT_IDX:
2871                 if (ddb_entry->ddb_type == FLASH_DDB) {
2872                         if (ddb_entry->chap_tbl_idx != INVALID_ENTRY) {
2873                                 idx = ddb_entry->chap_tbl_idx;
2874                                 rval = QLA_SUCCESS;
2875                         } else {
2876                                 rval = QLA_ERROR;
2877                         }
2878                 } else {
2879                         rval = qla4xxx_get_chap_index(ha, sess->username,
2880                                                       sess->password,
2881                                                       LOCAL_CHAP, &idx);
2882                 }
2883                 if (rval)
2884                         len = sprintf(buf, "\n");
2885                 else
2886                         len = sprintf(buf, "%hu\n", idx);
2887                 break;
2888         case ISCSI_PARAM_USERNAME:
2889         case ISCSI_PARAM_PASSWORD:
2890                 /* First, populate session username and password for FLASH DDB,
2891                  * if not already done. This happens when session login fails
2892                  * for a FLASH DDB.
2893                  */
2894                 if (ddb_entry->ddb_type == FLASH_DDB &&
2895                     ddb_entry->chap_tbl_idx != INVALID_ENTRY &&
2896                     !sess->username && !sess->password) {
2897                         idx = ddb_entry->chap_tbl_idx;
2898                         rval = qla4xxx_get_uni_chap_at_index(ha, chap_tbl.name,
2899                                                             chap_tbl.secret,
2900                                                             idx);
2901                         if (!rval) {
2902                                 iscsi_set_param(cls_conn, ISCSI_PARAM_USERNAME,
2903                                                 (char *)chap_tbl.name,
2904                                                 strlen((char *)chap_tbl.name));
2905                                 iscsi_set_param(cls_conn, ISCSI_PARAM_PASSWORD,
2906                                                 (char *)chap_tbl.secret,
2907                                                 chap_tbl.secret_len);
2908                         }
2909                 }
2910                 fallthrough;
2911         default:
2912                 return iscsi_session_get_param(cls_sess, param, buf);
2913         }
2914
2915         return len;
2916 }
2917
2918 static int qla4xxx_conn_get_param(struct iscsi_cls_conn *cls_conn,
2919                                   enum iscsi_param param, char *buf)
2920 {
2921         struct iscsi_conn *conn;
2922         struct qla_conn *qla_conn;
2923         struct sockaddr *dst_addr;
2924
2925         conn = cls_conn->dd_data;
2926         qla_conn = conn->dd_data;
2927         dst_addr = (struct sockaddr *)&qla_conn->qla_ep->dst_addr;
2928
2929         switch (param) {
2930         case ISCSI_PARAM_CONN_PORT:
2931         case ISCSI_PARAM_CONN_ADDRESS:
2932                 return iscsi_conn_get_addr_param((struct sockaddr_storage *)
2933                                                  dst_addr, param, buf);
2934         default:
2935                 return iscsi_conn_get_param(cls_conn, param, buf);
2936         }
2937 }
2938
2939 int qla4xxx_get_ddb_index(struct scsi_qla_host *ha, uint16_t *ddb_index)
2940 {
2941         uint32_t mbx_sts = 0;
2942         uint16_t tmp_ddb_index;
2943         int ret;
2944
2945 get_ddb_index:
2946         tmp_ddb_index = find_first_zero_bit(ha->ddb_idx_map, MAX_DDB_ENTRIES);
2947
2948         if (tmp_ddb_index >= MAX_DDB_ENTRIES) {
2949                 DEBUG2(ql4_printk(KERN_INFO, ha,
2950                                   "Free DDB index not available\n"));
2951                 ret = QLA_ERROR;
2952                 goto exit_get_ddb_index;
2953         }
2954
2955         if (test_and_set_bit(tmp_ddb_index, ha->ddb_idx_map))
2956                 goto get_ddb_index;
2957
2958         DEBUG2(ql4_printk(KERN_INFO, ha,
2959                           "Found a free DDB index at %d\n", tmp_ddb_index));
2960         ret = qla4xxx_req_ddb_entry(ha, tmp_ddb_index, &mbx_sts);
2961         if (ret == QLA_ERROR) {
2962                 if (mbx_sts == MBOX_STS_COMMAND_ERROR) {
2963                         ql4_printk(KERN_INFO, ha,
2964                                    "DDB index = %d not available trying next\n",
2965                                    tmp_ddb_index);
2966                         goto get_ddb_index;
2967                 }
2968                 DEBUG2(ql4_printk(KERN_INFO, ha,
2969                                   "Free FW DDB not available\n"));
2970         }
2971
2972         *ddb_index = tmp_ddb_index;
2973
2974 exit_get_ddb_index:
2975         return ret;
2976 }
2977
2978 static int qla4xxx_match_ipaddress(struct scsi_qla_host *ha,
2979                                    struct ddb_entry *ddb_entry,
2980                                    char *existing_ipaddr,
2981                                    char *user_ipaddr)
2982 {
2983         uint8_t dst_ipaddr[IPv6_ADDR_LEN];
2984         char formatted_ipaddr[DDB_IPADDR_LEN];
2985         int status = QLA_SUCCESS, ret = 0;
2986
2987         if (ddb_entry->fw_ddb_entry.options & DDB_OPT_IPV6_DEVICE) {
2988                 ret = in6_pton(user_ipaddr, strlen(user_ipaddr), dst_ipaddr,
2989                                '\0', NULL);
2990                 if (ret == 0) {
2991                         status = QLA_ERROR;
2992                         goto out_match;
2993                 }
2994                 ret = sprintf(formatted_ipaddr, "%pI6", dst_ipaddr);
2995         } else {
2996                 ret = in4_pton(user_ipaddr, strlen(user_ipaddr), dst_ipaddr,
2997                                '\0', NULL);
2998                 if (ret == 0) {
2999                         status = QLA_ERROR;
3000                         goto out_match;
3001                 }
3002                 ret = sprintf(formatted_ipaddr, "%pI4", dst_ipaddr);
3003         }
3004
3005         if (strcmp(existing_ipaddr, formatted_ipaddr))
3006                 status = QLA_ERROR;
3007
3008 out_match:
3009         return status;
3010 }
3011
3012 static int qla4xxx_match_fwdb_session(struct scsi_qla_host *ha,
3013                                       struct iscsi_cls_conn *cls_conn)
3014 {
3015         int idx = 0, max_ddbs, rval;
3016         struct iscsi_cls_session *cls_sess = iscsi_conn_to_session(cls_conn);
3017         struct iscsi_session *sess, *existing_sess;
3018         struct iscsi_conn *conn, *existing_conn;
3019         struct ddb_entry *ddb_entry;
3020
3021         sess = cls_sess->dd_data;
3022         conn = cls_conn->dd_data;
3023
3024         if (sess->targetname == NULL ||
3025             conn->persistent_address == NULL ||
3026             conn->persistent_port == 0)
3027                 return QLA_ERROR;
3028
3029         max_ddbs =  is_qla40XX(ha) ? MAX_DEV_DB_ENTRIES_40XX :
3030                                      MAX_DEV_DB_ENTRIES;
3031
3032         for (idx = 0; idx < max_ddbs; idx++) {
3033                 ddb_entry = qla4xxx_lookup_ddb_by_fw_index(ha, idx);
3034                 if (ddb_entry == NULL)
3035                         continue;
3036
3037                 if (ddb_entry->ddb_type != FLASH_DDB)
3038                         continue;
3039
3040                 existing_sess = ddb_entry->sess->dd_data;
3041                 existing_conn = ddb_entry->conn->dd_data;
3042
3043                 if (existing_sess->targetname == NULL ||
3044                     existing_conn->persistent_address == NULL ||
3045                     existing_conn->persistent_port == 0)
3046                         continue;
3047
3048                 DEBUG2(ql4_printk(KERN_INFO, ha,
3049                                   "IQN = %s User IQN = %s\n",
3050                                   existing_sess->targetname,
3051                                   sess->targetname));
3052
3053                 DEBUG2(ql4_printk(KERN_INFO, ha,
3054                                   "IP = %s User IP = %s\n",
3055                                   existing_conn->persistent_address,
3056                                   conn->persistent_address));
3057
3058                 DEBUG2(ql4_printk(KERN_INFO, ha,
3059                                   "Port = %d User Port = %d\n",
3060                                   existing_conn->persistent_port,
3061                                   conn->persistent_port));
3062
3063                 if (strcmp(existing_sess->targetname, sess->targetname))
3064                         continue;
3065                 rval = qla4xxx_match_ipaddress(ha, ddb_entry,
3066                                         existing_conn->persistent_address,
3067                                         conn->persistent_address);
3068                 if (rval == QLA_ERROR)
3069                         continue;
3070                 if (existing_conn->persistent_port != conn->persistent_port)
3071                         continue;
3072                 break;
3073         }
3074
3075         if (idx == max_ddbs)
3076                 return QLA_ERROR;
3077
3078         DEBUG2(ql4_printk(KERN_INFO, ha,
3079                           "Match found in fwdb sessions\n"));
3080         return QLA_SUCCESS;
3081 }
3082
3083 static struct iscsi_cls_session *
3084 qla4xxx_session_create(struct iscsi_endpoint *ep,
3085                         uint16_t cmds_max, uint16_t qdepth,
3086                         uint32_t initial_cmdsn)
3087 {
3088         struct iscsi_cls_session *cls_sess;
3089         struct scsi_qla_host *ha;
3090         struct qla_endpoint *qla_ep;
3091         struct ddb_entry *ddb_entry;
3092         uint16_t ddb_index;
3093         struct iscsi_session *sess;
3094         int ret;
3095
3096         if (!ep) {
3097                 printk(KERN_ERR "qla4xxx: missing ep.\n");
3098                 return NULL;
3099         }
3100
3101         qla_ep = ep->dd_data;
3102         ha = to_qla_host(qla_ep->host);
3103         DEBUG2(ql4_printk(KERN_INFO, ha, "%s: host: %ld\n", __func__,
3104                           ha->host_no));
3105
3106         ret = qla4xxx_get_ddb_index(ha, &ddb_index);
3107         if (ret == QLA_ERROR)
3108                 return NULL;
3109
3110         cls_sess = iscsi_session_setup(&qla4xxx_iscsi_transport, qla_ep->host,
3111                                        cmds_max, sizeof(struct ddb_entry),
3112                                        sizeof(struct ql4_task_data),
3113                                        initial_cmdsn, ddb_index);
3114         if (!cls_sess)
3115                 return NULL;
3116
3117         sess = cls_sess->dd_data;
3118         ddb_entry = sess->dd_data;
3119         ddb_entry->fw_ddb_index = ddb_index;
3120         ddb_entry->fw_ddb_device_state = DDB_DS_NO_CONNECTION_ACTIVE;
3121         ddb_entry->ha = ha;
3122         ddb_entry->sess = cls_sess;
3123         ddb_entry->unblock_sess = qla4xxx_unblock_ddb;
3124         ddb_entry->ddb_change = qla4xxx_ddb_change;
3125         clear_bit(DDB_CONN_CLOSE_FAILURE, &ddb_entry->flags);
3126         cls_sess->recovery_tmo = ql4xsess_recovery_tmo;
3127         ha->fw_ddb_index_map[ddb_entry->fw_ddb_index] = ddb_entry;
3128         ha->tot_ddbs++;
3129
3130         return cls_sess;
3131 }
3132
3133 static void qla4xxx_session_destroy(struct iscsi_cls_session *cls_sess)
3134 {
3135         struct iscsi_session *sess;
3136         struct ddb_entry *ddb_entry;
3137         struct scsi_qla_host *ha;
3138         unsigned long flags, wtime;
3139         struct dev_db_entry *fw_ddb_entry = NULL;
3140         dma_addr_t fw_ddb_entry_dma;
3141         uint32_t ddb_state;
3142         int ret;
3143
3144         sess = cls_sess->dd_data;
3145         ddb_entry = sess->dd_data;
3146         ha = ddb_entry->ha;
3147         DEBUG2(ql4_printk(KERN_INFO, ha, "%s: host: %ld\n", __func__,
3148                           ha->host_no));
3149
3150         fw_ddb_entry = dma_alloc_coherent(&ha->pdev->dev, sizeof(*fw_ddb_entry),
3151                                           &fw_ddb_entry_dma, GFP_KERNEL);
3152         if (!fw_ddb_entry) {
3153                 ql4_printk(KERN_ERR, ha,
3154                            "%s: Unable to allocate dma buffer\n", __func__);
3155                 goto destroy_session;
3156         }
3157
3158         wtime = jiffies + (HZ * LOGOUT_TOV);
3159         do {
3160                 ret = qla4xxx_get_fwddb_entry(ha, ddb_entry->fw_ddb_index,
3161                                               fw_ddb_entry, fw_ddb_entry_dma,
3162                                               NULL, NULL, &ddb_state, NULL,
3163                                               NULL, NULL);
3164                 if (ret == QLA_ERROR)
3165                         goto destroy_session;
3166
3167                 if ((ddb_state == DDB_DS_NO_CONNECTION_ACTIVE) ||
3168                     (ddb_state == DDB_DS_SESSION_FAILED))
3169                         goto destroy_session;
3170
3171                 schedule_timeout_uninterruptible(HZ);
3172         } while ((time_after(wtime, jiffies)));
3173
3174 destroy_session:
3175         qla4xxx_clear_ddb_entry(ha, ddb_entry->fw_ddb_index);
3176         if (test_and_clear_bit(DDB_CONN_CLOSE_FAILURE, &ddb_entry->flags))
3177                 clear_bit(ddb_entry->fw_ddb_index, ha->ddb_idx_map);
3178         spin_lock_irqsave(&ha->hardware_lock, flags);
3179         qla4xxx_free_ddb(ha, ddb_entry);
3180         spin_unlock_irqrestore(&ha->hardware_lock, flags);
3181
3182         iscsi_session_teardown(cls_sess);
3183
3184         if (fw_ddb_entry)
3185                 dma_free_coherent(&ha->pdev->dev, sizeof(*fw_ddb_entry),
3186                                   fw_ddb_entry, fw_ddb_entry_dma);
3187 }
3188
3189 static struct iscsi_cls_conn *
3190 qla4xxx_conn_create(struct iscsi_cls_session *cls_sess, uint32_t conn_idx)
3191 {
3192         struct iscsi_cls_conn *cls_conn;
3193         struct iscsi_session *sess;
3194         struct ddb_entry *ddb_entry;
3195         struct scsi_qla_host *ha;
3196
3197         cls_conn = iscsi_conn_setup(cls_sess, sizeof(struct qla_conn),
3198                                     conn_idx);
3199         if (!cls_conn) {
3200                 pr_info("%s: Can not create connection for conn_idx = %u\n",
3201                         __func__, conn_idx);
3202                 return NULL;
3203         }
3204
3205         sess = cls_sess->dd_data;
3206         ddb_entry = sess->dd_data;
3207         ddb_entry->conn = cls_conn;
3208
3209         ha = ddb_entry->ha;
3210         DEBUG2(ql4_printk(KERN_INFO, ha, "%s: conn_idx = %u\n", __func__,
3211                           conn_idx));
3212         return cls_conn;
3213 }
3214
3215 static int qla4xxx_conn_bind(struct iscsi_cls_session *cls_session,
3216                              struct iscsi_cls_conn *cls_conn,
3217                              uint64_t transport_fd, int is_leading)
3218 {
3219         struct iscsi_conn *conn;
3220         struct qla_conn *qla_conn;
3221         struct iscsi_endpoint *ep;
3222         struct ddb_entry *ddb_entry;
3223         struct scsi_qla_host *ha;
3224         struct iscsi_session *sess;
3225
3226         sess = cls_session->dd_data;
3227         ddb_entry = sess->dd_data;
3228         ha = ddb_entry->ha;
3229
3230         DEBUG2(ql4_printk(KERN_INFO, ha, "%s: sid = %d, cid = %d\n", __func__,
3231                           cls_session->sid, cls_conn->cid));
3232
3233         if (iscsi_conn_bind(cls_session, cls_conn, is_leading))
3234                 return -EINVAL;
3235         ep = iscsi_lookup_endpoint(transport_fd);
3236         if (!ep)
3237                 return -EINVAL;
3238         conn = cls_conn->dd_data;
3239         qla_conn = conn->dd_data;
3240         qla_conn->qla_ep = ep->dd_data;
3241         return 0;
3242 }
3243
3244 static int qla4xxx_conn_start(struct iscsi_cls_conn *cls_conn)
3245 {
3246         struct iscsi_cls_session *cls_sess = iscsi_conn_to_session(cls_conn);
3247         struct iscsi_session *sess;
3248         struct ddb_entry *ddb_entry;
3249         struct scsi_qla_host *ha;
3250         struct dev_db_entry *fw_ddb_entry = NULL;
3251         dma_addr_t fw_ddb_entry_dma;
3252         uint32_t mbx_sts = 0;
3253         int ret = 0;
3254         int status = QLA_SUCCESS;
3255
3256         sess = cls_sess->dd_data;
3257         ddb_entry = sess->dd_data;
3258         ha = ddb_entry->ha;
3259         DEBUG2(ql4_printk(KERN_INFO, ha, "%s: sid = %d, cid = %d\n", __func__,
3260                           cls_sess->sid, cls_conn->cid));
3261
3262         /* Check if we have  matching FW DDB, if yes then do not
3263          * login to this target. This could cause target to logout previous
3264          * connection
3265          */
3266         ret = qla4xxx_match_fwdb_session(ha, cls_conn);
3267         if (ret == QLA_SUCCESS) {
3268                 ql4_printk(KERN_INFO, ha,
3269                            "Session already exist in FW.\n");
3270                 ret = -EEXIST;
3271                 goto exit_conn_start;
3272         }
3273
3274         fw_ddb_entry = dma_alloc_coherent(&ha->pdev->dev, sizeof(*fw_ddb_entry),
3275                                           &fw_ddb_entry_dma, GFP_KERNEL);
3276         if (!fw_ddb_entry) {
3277                 ql4_printk(KERN_ERR, ha,
3278                            "%s: Unable to allocate dma buffer\n", __func__);
3279                 ret = -ENOMEM;
3280                 goto exit_conn_start;
3281         }
3282
3283         ret = qla4xxx_set_param_ddbentry(ha, ddb_entry, cls_conn, &mbx_sts);
3284         if (ret) {
3285                 /* If iscsid is stopped and started then no need to do
3286                 * set param again since ddb state will be already
3287                 * active and FW does not allow set ddb to an
3288                 * active session.
3289                 */
3290                 if (mbx_sts)
3291                         if (ddb_entry->fw_ddb_device_state ==
3292                                                 DDB_DS_SESSION_ACTIVE) {
3293                                 ddb_entry->unblock_sess(ddb_entry->sess);
3294                                 goto exit_set_param;
3295                         }
3296
3297                 ql4_printk(KERN_ERR, ha, "%s: Failed set param for index[%d]\n",
3298                            __func__, ddb_entry->fw_ddb_index);
3299                 goto exit_conn_start;
3300         }
3301
3302         status = qla4xxx_conn_open(ha, ddb_entry->fw_ddb_index);
3303         if (status == QLA_ERROR) {
3304                 ql4_printk(KERN_ERR, ha, "%s: Login failed: %s\n", __func__,
3305                            sess->targetname);
3306                 ret = -EINVAL;
3307                 goto exit_conn_start;
3308         }
3309
3310         if (ddb_entry->fw_ddb_device_state == DDB_DS_NO_CONNECTION_ACTIVE)
3311                 ddb_entry->fw_ddb_device_state = DDB_DS_LOGIN_IN_PROCESS;
3312
3313         DEBUG2(printk(KERN_INFO "%s: DDB state [%d]\n", __func__,
3314                       ddb_entry->fw_ddb_device_state));
3315
3316 exit_set_param:
3317         ret = 0;
3318
3319 exit_conn_start:
3320         if (fw_ddb_entry)
3321                 dma_free_coherent(&ha->pdev->dev, sizeof(*fw_ddb_entry),
3322                                   fw_ddb_entry, fw_ddb_entry_dma);
3323         return ret;
3324 }
3325
3326 static void qla4xxx_conn_destroy(struct iscsi_cls_conn *cls_conn)
3327 {
3328         struct iscsi_cls_session *cls_sess = iscsi_conn_to_session(cls_conn);
3329         struct iscsi_session *sess;
3330         struct scsi_qla_host *ha;
3331         struct ddb_entry *ddb_entry;
3332         int options;
3333
3334         sess = cls_sess->dd_data;
3335         ddb_entry = sess->dd_data;
3336         ha = ddb_entry->ha;
3337         DEBUG2(ql4_printk(KERN_INFO, ha, "%s: cid = %d\n", __func__,
3338                           cls_conn->cid));
3339
3340         options = LOGOUT_OPTION_CLOSE_SESSION;
3341         if (qla4xxx_session_logout_ddb(ha, ddb_entry, options) == QLA_ERROR)
3342                 ql4_printk(KERN_ERR, ha, "%s: Logout failed\n", __func__);
3343 }
3344
3345 static void qla4xxx_task_work(struct work_struct *wdata)
3346 {
3347         struct ql4_task_data *task_data;
3348         struct scsi_qla_host *ha;
3349         struct passthru_status *sts;
3350         struct iscsi_task *task;
3351         struct iscsi_hdr *hdr;
3352         uint8_t *data;
3353         uint32_t data_len;
3354         struct iscsi_conn *conn;
3355         int hdr_len;
3356         itt_t itt;
3357
3358         task_data = container_of(wdata, struct ql4_task_data, task_work);
3359         ha = task_data->ha;
3360         task = task_data->task;
3361         sts = &task_data->sts;
3362         hdr_len = sizeof(struct iscsi_hdr);
3363
3364         DEBUG3(printk(KERN_INFO "Status returned\n"));
3365         DEBUG3(qla4xxx_dump_buffer(sts, 64));
3366         DEBUG3(printk(KERN_INFO "Response buffer"));
3367         DEBUG3(qla4xxx_dump_buffer(task_data->resp_buffer, 64));
3368
3369         conn = task->conn;
3370
3371         switch (sts->completionStatus) {
3372         case PASSTHRU_STATUS_COMPLETE:
3373                 hdr = (struct iscsi_hdr *)task_data->resp_buffer;
3374                 /* Assign back the itt in hdr, until we use the PREASSIGN_TAG */
3375                 itt = sts->handle;
3376                 hdr->itt = itt;
3377                 data = task_data->resp_buffer + hdr_len;
3378                 data_len = task_data->resp_len - hdr_len;
3379                 iscsi_complete_pdu(conn, hdr, data, data_len);
3380                 break;
3381         default:
3382                 ql4_printk(KERN_ERR, ha, "Passthru failed status = 0x%x\n",
3383                            sts->completionStatus);
3384                 break;
3385         }
3386         return;
3387 }
3388
3389 static int qla4xxx_alloc_pdu(struct iscsi_task *task, uint8_t opcode)
3390 {
3391         struct ql4_task_data *task_data;
3392         struct iscsi_session *sess;
3393         struct ddb_entry *ddb_entry;
3394         struct scsi_qla_host *ha;
3395         int hdr_len;
3396
3397         sess = task->conn->session;
3398         ddb_entry = sess->dd_data;
3399         ha = ddb_entry->ha;
3400         task_data = task->dd_data;
3401         memset(task_data, 0, sizeof(struct ql4_task_data));
3402
3403         if (task->sc) {
3404                 ql4_printk(KERN_INFO, ha,
3405                            "%s: SCSI Commands not implemented\n", __func__);
3406                 return -EINVAL;
3407         }
3408
3409         hdr_len = sizeof(struct iscsi_hdr);
3410         task_data->ha = ha;
3411         task_data->task = task;
3412
3413         if (task->data_count) {
3414                 task_data->data_dma = dma_map_single(&ha->pdev->dev, task->data,
3415                                                      task->data_count,
3416                                                      DMA_TO_DEVICE);
3417         }
3418
3419         DEBUG2(ql4_printk(KERN_INFO, ha, "%s: MaxRecvLen %u, iscsi hrd %d\n",
3420                       __func__, task->conn->max_recv_dlength, hdr_len));
3421
3422         task_data->resp_len = task->conn->max_recv_dlength + hdr_len;
3423         task_data->resp_buffer = dma_alloc_coherent(&ha->pdev->dev,
3424                                                     task_data->resp_len,
3425                                                     &task_data->resp_dma,
3426                                                     GFP_ATOMIC);
3427         if (!task_data->resp_buffer)
3428                 goto exit_alloc_pdu;
3429
3430         task_data->req_len = task->data_count + hdr_len;
3431         task_data->req_buffer = dma_alloc_coherent(&ha->pdev->dev,
3432                                                    task_data->req_len,
3433                                                    &task_data->req_dma,
3434                                                    GFP_ATOMIC);
3435         if (!task_data->req_buffer)
3436                 goto exit_alloc_pdu;
3437
3438         task->hdr = task_data->req_buffer;
3439
3440         INIT_WORK(&task_data->task_work, qla4xxx_task_work);
3441
3442         return 0;
3443
3444 exit_alloc_pdu:
3445         if (task_data->resp_buffer)
3446                 dma_free_coherent(&ha->pdev->dev, task_data->resp_len,
3447                                   task_data->resp_buffer, task_data->resp_dma);
3448
3449         if (task_data->req_buffer)
3450                 dma_free_coherent(&ha->pdev->dev, task_data->req_len,
3451                                   task_data->req_buffer, task_data->req_dma);
3452         return -ENOMEM;
3453 }
3454
3455 static void qla4xxx_task_cleanup(struct iscsi_task *task)
3456 {
3457         struct ql4_task_data *task_data;
3458         struct iscsi_session *sess;
3459         struct ddb_entry *ddb_entry;
3460         struct scsi_qla_host *ha;
3461         int hdr_len;
3462
3463         hdr_len = sizeof(struct iscsi_hdr);
3464         sess = task->conn->session;
3465         ddb_entry = sess->dd_data;
3466         ha = ddb_entry->ha;
3467         task_data = task->dd_data;
3468
3469         if (task->data_count) {
3470                 dma_unmap_single(&ha->pdev->dev, task_data->data_dma,
3471                                  task->data_count, DMA_TO_DEVICE);
3472         }
3473
3474         DEBUG2(ql4_printk(KERN_INFO, ha, "%s: MaxRecvLen %u, iscsi hrd %d\n",
3475                       __func__, task->conn->max_recv_dlength, hdr_len));
3476
3477         dma_free_coherent(&ha->pdev->dev, task_data->resp_len,
3478                           task_data->resp_buffer, task_data->resp_dma);
3479         dma_free_coherent(&ha->pdev->dev, task_data->req_len,
3480                           task_data->req_buffer, task_data->req_dma);
3481         return;
3482 }
3483
3484 static int qla4xxx_task_xmit(struct iscsi_task *task)
3485 {
3486         struct scsi_cmnd *sc = task->sc;
3487         struct iscsi_session *sess = task->conn->session;
3488         struct ddb_entry *ddb_entry = sess->dd_data;
3489         struct scsi_qla_host *ha = ddb_entry->ha;
3490
3491         if (!sc)
3492                 return qla4xxx_send_passthru0(task);
3493
3494         ql4_printk(KERN_INFO, ha, "%s: scsi cmd xmit not implemented\n",
3495                    __func__);
3496         return -ENOSYS;
3497 }
3498
3499 static int qla4xxx_copy_from_fwddb_param(struct iscsi_bus_flash_session *sess,
3500                                          struct iscsi_bus_flash_conn *conn,
3501                                          struct dev_db_entry *fw_ddb_entry)
3502 {
3503         unsigned long options = 0;
3504         int rc = 0;
3505
3506         options = le16_to_cpu(fw_ddb_entry->options);
3507         conn->is_fw_assigned_ipv6 = test_bit(OPT_IS_FW_ASSIGNED_IPV6, &options);
3508         if (test_bit(OPT_IPV6_DEVICE, &options)) {
3509                 rc = iscsi_switch_str_param(&sess->portal_type,
3510                                             PORTAL_TYPE_IPV6);
3511                 if (rc)
3512                         goto exit_copy;
3513         } else {
3514                 rc = iscsi_switch_str_param(&sess->portal_type,
3515                                             PORTAL_TYPE_IPV4);
3516                 if (rc)
3517                         goto exit_copy;
3518         }
3519
3520         sess->auto_snd_tgt_disable = test_bit(OPT_AUTO_SENDTGTS_DISABLE,
3521                                               &options);
3522         sess->discovery_sess = test_bit(OPT_DISC_SESSION, &options);
3523         sess->entry_state = test_bit(OPT_ENTRY_STATE, &options);
3524
3525         options = le16_to_cpu(fw_ddb_entry->iscsi_options);
3526         conn->hdrdgst_en = test_bit(ISCSIOPT_HEADER_DIGEST_EN, &options);
3527         conn->datadgst_en = test_bit(ISCSIOPT_DATA_DIGEST_EN, &options);
3528         sess->imm_data_en = test_bit(ISCSIOPT_IMMEDIATE_DATA_EN, &options);
3529         sess->initial_r2t_en = test_bit(ISCSIOPT_INITIAL_R2T_EN, &options);
3530         sess->dataseq_inorder_en = test_bit(ISCSIOPT_DATA_SEQ_IN_ORDER,
3531                                             &options);
3532         sess->pdu_inorder_en = test_bit(ISCSIOPT_DATA_PDU_IN_ORDER, &options);
3533         sess->chap_auth_en = test_bit(ISCSIOPT_CHAP_AUTH_EN, &options);
3534         conn->snack_req_en = test_bit(ISCSIOPT_SNACK_REQ_EN, &options);
3535         sess->discovery_logout_en = test_bit(ISCSIOPT_DISCOVERY_LOGOUT_EN,
3536                                              &options);
3537         sess->bidi_chap_en = test_bit(ISCSIOPT_BIDI_CHAP_EN, &options);
3538         sess->discovery_auth_optional =
3539                         test_bit(ISCSIOPT_DISCOVERY_AUTH_OPTIONAL, &options);
3540         if (test_bit(ISCSIOPT_ERL1, &options))
3541                 sess->erl |= BIT_1;
3542         if (test_bit(ISCSIOPT_ERL0, &options))
3543                 sess->erl |= BIT_0;
3544
3545         options = le16_to_cpu(fw_ddb_entry->tcp_options);
3546         conn->tcp_timestamp_stat = test_bit(TCPOPT_TIMESTAMP_STAT, &options);
3547         conn->tcp_nagle_disable = test_bit(TCPOPT_NAGLE_DISABLE, &options);
3548         conn->tcp_wsf_disable = test_bit(TCPOPT_WSF_DISABLE, &options);
3549         if (test_bit(TCPOPT_TIMER_SCALE3, &options))
3550                 conn->tcp_timer_scale |= BIT_3;
3551         if (test_bit(TCPOPT_TIMER_SCALE2, &options))
3552                 conn->tcp_timer_scale |= BIT_2;
3553         if (test_bit(TCPOPT_TIMER_SCALE1, &options))
3554                 conn->tcp_timer_scale |= BIT_1;
3555
3556         conn->tcp_timer_scale >>= 1;
3557         conn->tcp_timestamp_en = test_bit(TCPOPT_TIMESTAMP_EN, &options);
3558
3559         options = le16_to_cpu(fw_ddb_entry->ip_options);
3560         conn->fragment_disable = test_bit(IPOPT_FRAGMENT_DISABLE, &options);
3561
3562         conn->max_recv_dlength = BYTE_UNITS *
3563                           le16_to_cpu(fw_ddb_entry->iscsi_max_rcv_data_seg_len);
3564         conn->max_xmit_dlength = BYTE_UNITS *
3565                           le16_to_cpu(fw_ddb_entry->iscsi_max_snd_data_seg_len);
3566         sess->first_burst = BYTE_UNITS *
3567                                le16_to_cpu(fw_ddb_entry->iscsi_first_burst_len);
3568         sess->max_burst = BYTE_UNITS *
3569                                  le16_to_cpu(fw_ddb_entry->iscsi_max_burst_len);
3570         sess->max_r2t = le16_to_cpu(fw_ddb_entry->iscsi_max_outsnd_r2t);
3571         sess->time2wait = le16_to_cpu(fw_ddb_entry->iscsi_def_time2wait);
3572         sess->time2retain = le16_to_cpu(fw_ddb_entry->iscsi_def_time2retain);
3573         sess->tpgt = le32_to_cpu(fw_ddb_entry->tgt_portal_grp);
3574         conn->max_segment_size = le16_to_cpu(fw_ddb_entry->mss);
3575         conn->tcp_xmit_wsf = fw_ddb_entry->tcp_xmt_wsf;
3576         conn->tcp_recv_wsf = fw_ddb_entry->tcp_rcv_wsf;
3577         conn->ipv6_flow_label = le16_to_cpu(fw_ddb_entry->ipv6_flow_lbl);
3578         conn->keepalive_timeout = le16_to_cpu(fw_ddb_entry->ka_timeout);
3579         conn->local_port = le16_to_cpu(fw_ddb_entry->lcl_port);
3580         conn->statsn = le32_to_cpu(fw_ddb_entry->stat_sn);
3581         conn->exp_statsn = le32_to_cpu(fw_ddb_entry->exp_stat_sn);
3582         sess->discovery_parent_idx = le16_to_cpu(fw_ddb_entry->ddb_link);
3583         sess->discovery_parent_type = le16_to_cpu(fw_ddb_entry->ddb_link);
3584         sess->chap_out_idx = le16_to_cpu(fw_ddb_entry->chap_tbl_idx);
3585         sess->tsid = le16_to_cpu(fw_ddb_entry->tsid);
3586
3587         sess->default_taskmgmt_timeout =
3588                                 le16_to_cpu(fw_ddb_entry->def_timeout);
3589         conn->port = le16_to_cpu(fw_ddb_entry->port);
3590
3591         options = le16_to_cpu(fw_ddb_entry->options);
3592         conn->ipaddress = kzalloc(IPv6_ADDR_LEN, GFP_KERNEL);
3593         if (!conn->ipaddress) {
3594                 rc = -ENOMEM;
3595                 goto exit_copy;
3596         }
3597
3598         conn->redirect_ipaddr = kzalloc(IPv6_ADDR_LEN, GFP_KERNEL);
3599         if (!conn->redirect_ipaddr) {
3600                 rc = -ENOMEM;
3601                 goto exit_copy;
3602         }
3603
3604         memcpy(conn->ipaddress, fw_ddb_entry->ip_addr, IPv6_ADDR_LEN);
3605         memcpy(conn->redirect_ipaddr, fw_ddb_entry->tgt_addr, IPv6_ADDR_LEN);
3606
3607         if (test_bit(OPT_IPV6_DEVICE, &options)) {
3608                 conn->ipv6_traffic_class = fw_ddb_entry->ipv4_tos;
3609
3610                 conn->link_local_ipv6_addr = kmemdup(
3611                                         fw_ddb_entry->link_local_ipv6_addr,
3612                                         IPv6_ADDR_LEN, GFP_KERNEL);
3613                 if (!conn->link_local_ipv6_addr) {
3614                         rc = -ENOMEM;
3615                         goto exit_copy;
3616                 }
3617         } else {
3618                 conn->ipv4_tos = fw_ddb_entry->ipv4_tos;
3619         }
3620
3621         if (fw_ddb_entry->iscsi_name[0]) {
3622                 rc = iscsi_switch_str_param(&sess->targetname,
3623                                             (char *)fw_ddb_entry->iscsi_name);
3624                 if (rc)
3625                         goto exit_copy;
3626         }
3627
3628         if (fw_ddb_entry->iscsi_alias[0]) {
3629                 rc = iscsi_switch_str_param(&sess->targetalias,
3630                                             (char *)fw_ddb_entry->iscsi_alias);
3631                 if (rc)
3632                         goto exit_copy;
3633         }
3634
3635         COPY_ISID(sess->isid, fw_ddb_entry->isid);
3636
3637 exit_copy:
3638         return rc;
3639 }
3640
3641 static int qla4xxx_copy_to_fwddb_param(struct iscsi_bus_flash_session *sess,
3642                                        struct iscsi_bus_flash_conn *conn,
3643                                        struct dev_db_entry *fw_ddb_entry)
3644 {
3645         uint16_t options;
3646         int rc = 0;
3647
3648         options = le16_to_cpu(fw_ddb_entry->options);
3649         SET_BITVAL(conn->is_fw_assigned_ipv6,  options, BIT_11);
3650         if (!strncmp(sess->portal_type, PORTAL_TYPE_IPV6, 4))
3651                 options |= BIT_8;
3652         else
3653                 options &= ~BIT_8;
3654
3655         SET_BITVAL(sess->auto_snd_tgt_disable, options, BIT_6);
3656         SET_BITVAL(sess->discovery_sess, options, BIT_4);
3657         SET_BITVAL(sess->entry_state, options, BIT_3);
3658         fw_ddb_entry->options = cpu_to_le16(options);
3659
3660         options = le16_to_cpu(fw_ddb_entry->iscsi_options);
3661         SET_BITVAL(conn->hdrdgst_en, options, BIT_13);
3662         SET_BITVAL(conn->datadgst_en, options, BIT_12);
3663         SET_BITVAL(sess->imm_data_en, options, BIT_11);
3664         SET_BITVAL(sess->initial_r2t_en, options, BIT_10);
3665         SET_BITVAL(sess->dataseq_inorder_en, options, BIT_9);
3666         SET_BITVAL(sess->pdu_inorder_en, options, BIT_8);
3667         SET_BITVAL(sess->chap_auth_en, options, BIT_7);
3668         SET_BITVAL(conn->snack_req_en, options, BIT_6);
3669         SET_BITVAL(sess->discovery_logout_en, options, BIT_5);
3670         SET_BITVAL(sess->bidi_chap_en, options, BIT_4);
3671         SET_BITVAL(sess->discovery_auth_optional, options, BIT_3);
3672         SET_BITVAL(sess->erl & BIT_1, options, BIT_1);
3673         SET_BITVAL(sess->erl & BIT_0, options, BIT_0);
3674         fw_ddb_entry->iscsi_options = cpu_to_le16(options);
3675
3676         options = le16_to_cpu(fw_ddb_entry->tcp_options);
3677         SET_BITVAL(conn->tcp_timestamp_stat, options, BIT_6);
3678         SET_BITVAL(conn->tcp_nagle_disable, options, BIT_5);
3679         SET_BITVAL(conn->tcp_wsf_disable, options, BIT_4);
3680         SET_BITVAL(conn->tcp_timer_scale & BIT_2, options, BIT_3);
3681         SET_BITVAL(conn->tcp_timer_scale & BIT_1, options, BIT_2);
3682         SET_BITVAL(conn->tcp_timer_scale & BIT_0, options, BIT_1);
3683         SET_BITVAL(conn->tcp_timestamp_en, options, BIT_0);
3684         fw_ddb_entry->tcp_options = cpu_to_le16(options);
3685
3686         options = le16_to_cpu(fw_ddb_entry->ip_options);
3687         SET_BITVAL(conn->fragment_disable, options, BIT_4);
3688         fw_ddb_entry->ip_options = cpu_to_le16(options);
3689
3690         fw_ddb_entry->iscsi_max_outsnd_r2t = cpu_to_le16(sess->max_r2t);
3691         fw_ddb_entry->iscsi_max_rcv_data_seg_len =
3692                                cpu_to_le16(conn->max_recv_dlength / BYTE_UNITS);
3693         fw_ddb_entry->iscsi_max_snd_data_seg_len =
3694                                cpu_to_le16(conn->max_xmit_dlength / BYTE_UNITS);
3695         fw_ddb_entry->iscsi_first_burst_len =
3696                                 cpu_to_le16(sess->first_burst / BYTE_UNITS);
3697         fw_ddb_entry->iscsi_max_burst_len = cpu_to_le16(sess->max_burst /
3698                                             BYTE_UNITS);
3699         fw_ddb_entry->iscsi_def_time2wait = cpu_to_le16(sess->time2wait);
3700         fw_ddb_entry->iscsi_def_time2retain = cpu_to_le16(sess->time2retain);
3701         fw_ddb_entry->tgt_portal_grp = cpu_to_le16(sess->tpgt);
3702         fw_ddb_entry->mss = cpu_to_le16(conn->max_segment_size);
3703         fw_ddb_entry->tcp_xmt_wsf = (uint8_t) cpu_to_le32(conn->tcp_xmit_wsf);
3704         fw_ddb_entry->tcp_rcv_wsf = (uint8_t) cpu_to_le32(conn->tcp_recv_wsf);
3705         fw_ddb_entry->ipv6_flow_lbl = cpu_to_le16(conn->ipv6_flow_label);
3706         fw_ddb_entry->ka_timeout = cpu_to_le16(conn->keepalive_timeout);
3707         fw_ddb_entry->lcl_port = cpu_to_le16(conn->local_port);
3708         fw_ddb_entry->stat_sn = cpu_to_le32(conn->statsn);
3709         fw_ddb_entry->exp_stat_sn = cpu_to_le32(conn->exp_statsn);
3710         fw_ddb_entry->ddb_link = cpu_to_le16(sess->discovery_parent_idx);
3711         fw_ddb_entry->chap_tbl_idx = cpu_to_le16(sess->chap_out_idx);
3712         fw_ddb_entry->tsid = cpu_to_le16(sess->tsid);
3713         fw_ddb_entry->port = cpu_to_le16(conn->port);
3714         fw_ddb_entry->def_timeout =
3715                                 cpu_to_le16(sess->default_taskmgmt_timeout);
3716
3717         if (!strncmp(sess->portal_type, PORTAL_TYPE_IPV6, 4))
3718                 fw_ddb_entry->ipv4_tos = conn->ipv6_traffic_class;
3719         else
3720                 fw_ddb_entry->ipv4_tos = conn->ipv4_tos;
3721
3722         if (conn->ipaddress)
3723                 memcpy(fw_ddb_entry->ip_addr, conn->ipaddress,
3724                        sizeof(fw_ddb_entry->ip_addr));
3725
3726         if (conn->redirect_ipaddr)
3727                 memcpy(fw_ddb_entry->tgt_addr, conn->redirect_ipaddr,
3728                        sizeof(fw_ddb_entry->tgt_addr));
3729
3730         if (conn->link_local_ipv6_addr)
3731                 memcpy(fw_ddb_entry->link_local_ipv6_addr,
3732                        conn->link_local_ipv6_addr,
3733                        sizeof(fw_ddb_entry->link_local_ipv6_addr));
3734
3735         if (sess->targetname)
3736                 memcpy(fw_ddb_entry->iscsi_name, sess->targetname,
3737                        sizeof(fw_ddb_entry->iscsi_name));
3738
3739         if (sess->targetalias)
3740                 memcpy(fw_ddb_entry->iscsi_alias, sess->targetalias,
3741                        sizeof(fw_ddb_entry->iscsi_alias));
3742
3743         COPY_ISID(fw_ddb_entry->isid, sess->isid);
3744
3745         return rc;
3746 }
3747
3748 static void qla4xxx_copy_to_sess_conn_params(struct iscsi_conn *conn,
3749                                              struct iscsi_session *sess,
3750                                              struct dev_db_entry *fw_ddb_entry)
3751 {
3752         unsigned long options = 0;
3753         uint16_t ddb_link;
3754         uint16_t disc_parent;
3755         char ip_addr[DDB_IPADDR_LEN];
3756
3757         options = le16_to_cpu(fw_ddb_entry->options);
3758         conn->is_fw_assigned_ipv6 = test_bit(OPT_IS_FW_ASSIGNED_IPV6, &options);
3759         sess->auto_snd_tgt_disable = test_bit(OPT_AUTO_SENDTGTS_DISABLE,
3760                                               &options);
3761         sess->discovery_sess = test_bit(OPT_DISC_SESSION, &options);
3762
3763         options = le16_to_cpu(fw_ddb_entry->iscsi_options);
3764         conn->hdrdgst_en = test_bit(ISCSIOPT_HEADER_DIGEST_EN, &options);
3765         conn->datadgst_en = test_bit(ISCSIOPT_DATA_DIGEST_EN, &options);
3766         sess->imm_data_en = test_bit(ISCSIOPT_IMMEDIATE_DATA_EN, &options);
3767         sess->initial_r2t_en = test_bit(ISCSIOPT_INITIAL_R2T_EN, &options);
3768         sess->dataseq_inorder_en = test_bit(ISCSIOPT_DATA_SEQ_IN_ORDER,
3769                                             &options);
3770         sess->pdu_inorder_en = test_bit(ISCSIOPT_DATA_PDU_IN_ORDER, &options);
3771         sess->chap_auth_en = test_bit(ISCSIOPT_CHAP_AUTH_EN, &options);
3772         sess->discovery_logout_en = test_bit(ISCSIOPT_DISCOVERY_LOGOUT_EN,
3773                                              &options);
3774         sess->bidi_chap_en = test_bit(ISCSIOPT_BIDI_CHAP_EN, &options);
3775         sess->discovery_auth_optional =
3776                         test_bit(ISCSIOPT_DISCOVERY_AUTH_OPTIONAL, &options);
3777         if (test_bit(ISCSIOPT_ERL1, &options))
3778                 sess->erl |= BIT_1;
3779         if (test_bit(ISCSIOPT_ERL0, &options))
3780                 sess->erl |= BIT_0;
3781
3782         options = le16_to_cpu(fw_ddb_entry->tcp_options);
3783         conn->tcp_timestamp_stat = test_bit(TCPOPT_TIMESTAMP_STAT, &options);
3784         conn->tcp_nagle_disable = test_bit(TCPOPT_NAGLE_DISABLE, &options);
3785         conn->tcp_wsf_disable = test_bit(TCPOPT_WSF_DISABLE, &options);
3786         if (test_bit(TCPOPT_TIMER_SCALE3, &options))
3787                 conn->tcp_timer_scale |= BIT_3;
3788         if (test_bit(TCPOPT_TIMER_SCALE2, &options))
3789                 conn->tcp_timer_scale |= BIT_2;
3790         if (test_bit(TCPOPT_TIMER_SCALE1, &options))
3791                 conn->tcp_timer_scale |= BIT_1;
3792
3793         conn->tcp_timer_scale >>= 1;
3794         conn->tcp_timestamp_en = test_bit(TCPOPT_TIMESTAMP_EN, &options);
3795
3796         options = le16_to_cpu(fw_ddb_entry->ip_options);
3797         conn->fragment_disable = test_bit(IPOPT_FRAGMENT_DISABLE, &options);
3798
3799         conn->max_recv_dlength = BYTE_UNITS *
3800                           le16_to_cpu(fw_ddb_entry->iscsi_max_rcv_data_seg_len);
3801         conn->max_xmit_dlength = BYTE_UNITS *
3802                           le16_to_cpu(fw_ddb_entry->iscsi_max_snd_data_seg_len);
3803         sess->max_r2t = le16_to_cpu(fw_ddb_entry->iscsi_max_outsnd_r2t);
3804         sess->first_burst = BYTE_UNITS *
3805                                le16_to_cpu(fw_ddb_entry->iscsi_first_burst_len);
3806         sess->max_burst = BYTE_UNITS *
3807                                  le16_to_cpu(fw_ddb_entry->iscsi_max_burst_len);
3808         sess->time2wait = le16_to_cpu(fw_ddb_entry->iscsi_def_time2wait);
3809         sess->time2retain = le16_to_cpu(fw_ddb_entry->iscsi_def_time2retain);
3810         sess->tpgt = le32_to_cpu(fw_ddb_entry->tgt_portal_grp);
3811         conn->max_segment_size = le16_to_cpu(fw_ddb_entry->mss);
3812         conn->tcp_xmit_wsf = fw_ddb_entry->tcp_xmt_wsf;
3813         conn->tcp_recv_wsf = fw_ddb_entry->tcp_rcv_wsf;
3814         conn->ipv4_tos = fw_ddb_entry->ipv4_tos;
3815         conn->keepalive_tmo = le16_to_cpu(fw_ddb_entry->ka_timeout);
3816         conn->local_port = le16_to_cpu(fw_ddb_entry->lcl_port);
3817         conn->statsn = le32_to_cpu(fw_ddb_entry->stat_sn);
3818         conn->exp_statsn = le32_to_cpu(fw_ddb_entry->exp_stat_sn);
3819         sess->tsid = le16_to_cpu(fw_ddb_entry->tsid);
3820         COPY_ISID(sess->isid, fw_ddb_entry->isid);
3821
3822         ddb_link = le16_to_cpu(fw_ddb_entry->ddb_link);
3823         if (ddb_link == DDB_ISNS)
3824                 disc_parent = ISCSI_DISC_PARENT_ISNS;
3825         else if (ddb_link == DDB_NO_LINK)
3826                 disc_parent = ISCSI_DISC_PARENT_UNKNOWN;
3827         else if (ddb_link < MAX_DDB_ENTRIES)
3828                 disc_parent = ISCSI_DISC_PARENT_SENDTGT;
3829         else
3830                 disc_parent = ISCSI_DISC_PARENT_UNKNOWN;
3831
3832         iscsi_set_param(conn->cls_conn, ISCSI_PARAM_DISCOVERY_PARENT_TYPE,
3833                         iscsi_get_discovery_parent_name(disc_parent), 0);
3834
3835         iscsi_set_param(conn->cls_conn, ISCSI_PARAM_TARGET_ALIAS,
3836                         (char *)fw_ddb_entry->iscsi_alias, 0);
3837
3838         options = le16_to_cpu(fw_ddb_entry->options);
3839         if (options & DDB_OPT_IPV6_DEVICE) {
3840                 memset(ip_addr, 0, sizeof(ip_addr));
3841                 sprintf(ip_addr, "%pI6", fw_ddb_entry->link_local_ipv6_addr);
3842                 iscsi_set_param(conn->cls_conn, ISCSI_PARAM_LOCAL_IPADDR,
3843                                 (char *)ip_addr, 0);
3844         }
3845 }
3846
3847 static void qla4xxx_copy_fwddb_param(struct scsi_qla_host *ha,
3848                                      struct dev_db_entry *fw_ddb_entry,
3849                                      struct iscsi_cls_session *cls_sess,
3850                                      struct iscsi_cls_conn *cls_conn)
3851 {
3852         int buflen = 0;
3853         struct iscsi_session *sess;
3854         struct ddb_entry *ddb_entry;
3855         struct ql4_chap_table chap_tbl;
3856         struct iscsi_conn *conn;
3857         char ip_addr[DDB_IPADDR_LEN];
3858         uint16_t options = 0;
3859
3860         sess = cls_sess->dd_data;
3861         ddb_entry = sess->dd_data;
3862         conn = cls_conn->dd_data;
3863         memset(&chap_tbl, 0, sizeof(chap_tbl));
3864
3865         ddb_entry->chap_tbl_idx = le16_to_cpu(fw_ddb_entry->chap_tbl_idx);
3866
3867         qla4xxx_copy_to_sess_conn_params(conn, sess, fw_ddb_entry);
3868
3869         sess->def_taskmgmt_tmo = le16_to_cpu(fw_ddb_entry->def_timeout);
3870         conn->persistent_port = le16_to_cpu(fw_ddb_entry->port);
3871
3872         memset(ip_addr, 0, sizeof(ip_addr));
3873         options = le16_to_cpu(fw_ddb_entry->options);
3874         if (options & DDB_OPT_IPV6_DEVICE) {
3875                 iscsi_set_param(cls_conn, ISCSI_PARAM_PORTAL_TYPE, "ipv6", 4);
3876
3877                 memset(ip_addr, 0, sizeof(ip_addr));
3878                 sprintf(ip_addr, "%pI6", fw_ddb_entry->ip_addr);
3879         } else {
3880                 iscsi_set_param(cls_conn, ISCSI_PARAM_PORTAL_TYPE, "ipv4", 4);
3881                 sprintf(ip_addr, "%pI4", fw_ddb_entry->ip_addr);
3882         }
3883
3884         iscsi_set_param(cls_conn, ISCSI_PARAM_PERSISTENT_ADDRESS,
3885                         (char *)ip_addr, buflen);
3886         iscsi_set_param(cls_conn, ISCSI_PARAM_TARGET_NAME,
3887                         (char *)fw_ddb_entry->iscsi_name, buflen);
3888         iscsi_set_param(cls_conn, ISCSI_PARAM_INITIATOR_NAME,
3889                         (char *)ha->name_string, buflen);
3890
3891         if (ddb_entry->chap_tbl_idx != INVALID_ENTRY) {
3892                 if (!qla4xxx_get_uni_chap_at_index(ha, chap_tbl.name,
3893                                                    chap_tbl.secret,
3894                                                    ddb_entry->chap_tbl_idx)) {
3895                         iscsi_set_param(cls_conn, ISCSI_PARAM_USERNAME,
3896                                         (char *)chap_tbl.name,
3897                                         strlen((char *)chap_tbl.name));
3898                         iscsi_set_param(cls_conn, ISCSI_PARAM_PASSWORD,
3899                                         (char *)chap_tbl.secret,
3900                                         chap_tbl.secret_len);
3901                 }
3902         }
3903 }
3904
3905 void qla4xxx_update_session_conn_fwddb_param(struct scsi_qla_host *ha,
3906                                              struct ddb_entry *ddb_entry)
3907 {
3908         struct iscsi_cls_session *cls_sess;
3909         struct iscsi_cls_conn *cls_conn;
3910         uint32_t ddb_state;
3911         dma_addr_t fw_ddb_entry_dma;
3912         struct dev_db_entry *fw_ddb_entry;
3913
3914         fw_ddb_entry = dma_alloc_coherent(&ha->pdev->dev, sizeof(*fw_ddb_entry),
3915                                           &fw_ddb_entry_dma, GFP_KERNEL);
3916         if (!fw_ddb_entry) {
3917                 ql4_printk(KERN_ERR, ha,
3918                            "%s: Unable to allocate dma buffer\n", __func__);
3919                 goto exit_session_conn_fwddb_param;
3920         }
3921
3922         if (qla4xxx_get_fwddb_entry(ha, ddb_entry->fw_ddb_index, fw_ddb_entry,
3923                                     fw_ddb_entry_dma, NULL, NULL, &ddb_state,
3924                                     NULL, NULL, NULL) == QLA_ERROR) {
3925                 DEBUG2(ql4_printk(KERN_ERR, ha, "scsi%ld: %s: failed "
3926                                   "get_ddb_entry for fw_ddb_index %d\n",
3927                                   ha->host_no, __func__,
3928                                   ddb_entry->fw_ddb_index));
3929                 goto exit_session_conn_fwddb_param;
3930         }
3931
3932         cls_sess = ddb_entry->sess;
3933
3934         cls_conn = ddb_entry->conn;
3935
3936         /* Update params */
3937         qla4xxx_copy_fwddb_param(ha, fw_ddb_entry, cls_sess, cls_conn);
3938
3939 exit_session_conn_fwddb_param:
3940         if (fw_ddb_entry)
3941                 dma_free_coherent(&ha->pdev->dev, sizeof(*fw_ddb_entry),
3942                                   fw_ddb_entry, fw_ddb_entry_dma);
3943 }
3944
3945 void qla4xxx_update_session_conn_param(struct scsi_qla_host *ha,
3946                                        struct ddb_entry *ddb_entry)
3947 {
3948         struct iscsi_cls_session *cls_sess;
3949         struct iscsi_cls_conn *cls_conn;
3950         struct iscsi_session *sess;
3951         struct iscsi_conn *conn;
3952         uint32_t ddb_state;
3953         dma_addr_t fw_ddb_entry_dma;
3954         struct dev_db_entry *fw_ddb_entry;
3955
3956         fw_ddb_entry = dma_alloc_coherent(&ha->pdev->dev, sizeof(*fw_ddb_entry),
3957                                           &fw_ddb_entry_dma, GFP_KERNEL);
3958         if (!fw_ddb_entry) {
3959                 ql4_printk(KERN_ERR, ha,
3960                            "%s: Unable to allocate dma buffer\n", __func__);
3961                 goto exit_session_conn_param;
3962         }
3963
3964         if (qla4xxx_get_fwddb_entry(ha, ddb_entry->fw_ddb_index, fw_ddb_entry,
3965                                     fw_ddb_entry_dma, NULL, NULL, &ddb_state,
3966                                     NULL, NULL, NULL) == QLA_ERROR) {
3967                 DEBUG2(ql4_printk(KERN_ERR, ha, "scsi%ld: %s: failed "
3968                                   "get_ddb_entry for fw_ddb_index %d\n",
3969                                   ha->host_no, __func__,
3970                                   ddb_entry->fw_ddb_index));
3971                 goto exit_session_conn_param;
3972         }
3973
3974         cls_sess = ddb_entry->sess;
3975         sess = cls_sess->dd_data;
3976
3977         cls_conn = ddb_entry->conn;
3978         conn = cls_conn->dd_data;
3979
3980         /* Update timers after login */
3981         ddb_entry->default_relogin_timeout =
3982                 (le16_to_cpu(fw_ddb_entry->def_timeout) > LOGIN_TOV) &&
3983                  (le16_to_cpu(fw_ddb_entry->def_timeout) < LOGIN_TOV * 10) ?
3984                  le16_to_cpu(fw_ddb_entry->def_timeout) : LOGIN_TOV;
3985         ddb_entry->default_time2wait =
3986                                 le16_to_cpu(fw_ddb_entry->iscsi_def_time2wait);
3987
3988         /* Update params */
3989         ddb_entry->chap_tbl_idx = le16_to_cpu(fw_ddb_entry->chap_tbl_idx);
3990         qla4xxx_copy_to_sess_conn_params(conn, sess, fw_ddb_entry);
3991
3992         memcpy(sess->initiatorname, ha->name_string,
3993                min(sizeof(ha->name_string), sizeof(sess->initiatorname)));
3994
3995 exit_session_conn_param:
3996         if (fw_ddb_entry)
3997                 dma_free_coherent(&ha->pdev->dev, sizeof(*fw_ddb_entry),
3998                                   fw_ddb_entry, fw_ddb_entry_dma);
3999 }
4000
4001 /*
4002  * Timer routines
4003  */
4004 static void qla4xxx_timer(struct timer_list *t);
4005
4006 static void qla4xxx_start_timer(struct scsi_qla_host *ha,
4007                                 unsigned long interval)
4008 {
4009         DEBUG(printk("scsi: %s: Starting timer thread for adapter %d\n",
4010                      __func__, ha->host->host_no));
4011         timer_setup(&ha->timer, qla4xxx_timer, 0);
4012         ha->timer.expires = jiffies + interval * HZ;
4013         add_timer(&ha->timer);
4014         ha->timer_active = 1;
4015 }
4016
4017 static void qla4xxx_stop_timer(struct scsi_qla_host *ha)
4018 {
4019         del_timer_sync(&ha->timer);
4020         ha->timer_active = 0;
4021 }
4022
4023 /***
4024  * qla4xxx_mark_device_missing - blocks the session
4025  * @cls_session: Pointer to the session to be blocked
4026  * @ddb_entry: Pointer to device database entry
4027  *
4028  * This routine marks a device missing and close connection.
4029  **/
4030 void qla4xxx_mark_device_missing(struct iscsi_cls_session *cls_session)
4031 {
4032         iscsi_block_session(cls_session);
4033 }
4034
4035 /**
4036  * qla4xxx_mark_all_devices_missing - mark all devices as missing.
4037  * @ha: Pointer to host adapter structure.
4038  *
4039  * This routine marks a device missing and resets the relogin retry count.
4040  **/
4041 void qla4xxx_mark_all_devices_missing(struct scsi_qla_host *ha)
4042 {
4043         iscsi_host_for_each_session(ha->host, qla4xxx_mark_device_missing);
4044 }
4045
4046 static struct srb* qla4xxx_get_new_srb(struct scsi_qla_host *ha,
4047                                        struct ddb_entry *ddb_entry,
4048                                        struct scsi_cmnd *cmd)
4049 {
4050         struct srb *srb;
4051
4052         srb = mempool_alloc(ha->srb_mempool, GFP_ATOMIC);
4053         if (!srb)
4054                 return srb;
4055
4056         kref_init(&srb->srb_ref);
4057         srb->ha = ha;
4058         srb->ddb = ddb_entry;
4059         srb->cmd = cmd;
4060         srb->flags = 0;
4061         CMD_SP(cmd) = (void *)srb;
4062
4063         return srb;
4064 }
4065
4066 static void qla4xxx_srb_free_dma(struct scsi_qla_host *ha, struct srb *srb)
4067 {
4068         struct scsi_cmnd *cmd = srb->cmd;
4069
4070         if (srb->flags & SRB_DMA_VALID) {
4071                 scsi_dma_unmap(cmd);
4072                 srb->flags &= ~SRB_DMA_VALID;
4073         }
4074         CMD_SP(cmd) = NULL;
4075 }
4076
4077 void qla4xxx_srb_compl(struct kref *ref)
4078 {
4079         struct srb *srb = container_of(ref, struct srb, srb_ref);
4080         struct scsi_cmnd *cmd = srb->cmd;
4081         struct scsi_qla_host *ha = srb->ha;
4082
4083         qla4xxx_srb_free_dma(ha, srb);
4084
4085         mempool_free(srb, ha->srb_mempool);
4086
4087         cmd->scsi_done(cmd);
4088 }
4089
4090 /**
4091  * qla4xxx_queuecommand - scsi layer issues scsi command to driver.
4092  * @host: scsi host
4093  * @cmd: Pointer to Linux's SCSI command structure
4094  *
4095  * Remarks:
4096  * This routine is invoked by Linux to send a SCSI command to the driver.
4097  * The mid-level driver tries to ensure that queuecommand never gets
4098  * invoked concurrently with itself or the interrupt handler (although
4099  * the interrupt handler may call this routine as part of request-
4100  * completion handling).   Unfortunely, it sometimes calls the scheduler
4101  * in interrupt context which is a big NO! NO!.
4102  **/
4103 static int qla4xxx_queuecommand(struct Scsi_Host *host, struct scsi_cmnd *cmd)
4104 {
4105         struct scsi_qla_host *ha = to_qla_host(host);
4106         struct ddb_entry *ddb_entry = cmd->device->hostdata;
4107         struct iscsi_cls_session *sess = ddb_entry->sess;
4108         struct srb *srb;
4109         int rval;
4110
4111         if (test_bit(AF_EEH_BUSY, &ha->flags)) {
4112                 if (test_bit(AF_PCI_CHANNEL_IO_PERM_FAILURE, &ha->flags))
4113                         cmd->result = DID_NO_CONNECT << 16;
4114                 else
4115                         cmd->result = DID_REQUEUE << 16;
4116                 goto qc_fail_command;
4117         }
4118
4119         if (!sess) {
4120                 cmd->result = DID_IMM_RETRY << 16;
4121                 goto qc_fail_command;
4122         }
4123
4124         rval = iscsi_session_chkready(sess);
4125         if (rval) {
4126                 cmd->result = rval;
4127                 goto qc_fail_command;
4128         }
4129
4130         if (test_bit(DPC_RESET_HA_INTR, &ha->dpc_flags) ||
4131             test_bit(DPC_RESET_ACTIVE, &ha->dpc_flags) ||
4132             test_bit(DPC_RESET_HA, &ha->dpc_flags) ||
4133             test_bit(DPC_HA_UNRECOVERABLE, &ha->dpc_flags) ||
4134             test_bit(DPC_HA_NEED_QUIESCENT, &ha->dpc_flags) ||
4135             !test_bit(AF_ONLINE, &ha->flags) ||
4136             !test_bit(AF_LINK_UP, &ha->flags) ||
4137             test_bit(AF_LOOPBACK, &ha->flags) ||
4138             test_bit(DPC_POST_IDC_ACK, &ha->dpc_flags) ||
4139             test_bit(DPC_RESTORE_ACB, &ha->dpc_flags) ||
4140             test_bit(DPC_RESET_HA_FW_CONTEXT, &ha->dpc_flags))
4141                 goto qc_host_busy;
4142
4143         srb = qla4xxx_get_new_srb(ha, ddb_entry, cmd);
4144         if (!srb)
4145                 goto qc_host_busy;
4146
4147         rval = qla4xxx_send_command_to_isp(ha, srb);
4148         if (rval != QLA_SUCCESS)
4149                 goto qc_host_busy_free_sp;
4150
4151         return 0;
4152
4153 qc_host_busy_free_sp:
4154         qla4xxx_srb_free_dma(ha, srb);
4155         mempool_free(srb, ha->srb_mempool);
4156
4157 qc_host_busy:
4158         return SCSI_MLQUEUE_HOST_BUSY;
4159
4160 qc_fail_command:
4161         cmd->scsi_done(cmd);
4162
4163         return 0;
4164 }
4165
4166 /**
4167  * qla4xxx_mem_free - frees memory allocated to adapter
4168  * @ha: Pointer to host adapter structure.
4169  *
4170  * Frees memory previously allocated by qla4xxx_mem_alloc
4171  **/
4172 static void qla4xxx_mem_free(struct scsi_qla_host *ha)
4173 {
4174         if (ha->queues)
4175                 dma_free_coherent(&ha->pdev->dev, ha->queues_len, ha->queues,
4176                                   ha->queues_dma);
4177
4178         if (ha->fw_dump)
4179                 vfree(ha->fw_dump);
4180
4181         ha->queues_len = 0;
4182         ha->queues = NULL;
4183         ha->queues_dma = 0;
4184         ha->request_ring = NULL;
4185         ha->request_dma = 0;
4186         ha->response_ring = NULL;
4187         ha->response_dma = 0;
4188         ha->shadow_regs = NULL;
4189         ha->shadow_regs_dma = 0;
4190         ha->fw_dump = NULL;
4191         ha->fw_dump_size = 0;
4192
4193         /* Free srb pool. */
4194         mempool_destroy(ha->srb_mempool);
4195         ha->srb_mempool = NULL;
4196
4197         dma_pool_destroy(ha->chap_dma_pool);
4198
4199         if (ha->chap_list)
4200                 vfree(ha->chap_list);
4201         ha->chap_list = NULL;
4202
4203         dma_pool_destroy(ha->fw_ddb_dma_pool);
4204
4205         /* release io space registers  */
4206         if (is_qla8022(ha)) {
4207                 if (ha->nx_pcibase)
4208                         iounmap(
4209                             (struct device_reg_82xx __iomem *)ha->nx_pcibase);
4210         } else if (is_qla8032(ha) || is_qla8042(ha)) {
4211                 if (ha->nx_pcibase)
4212                         iounmap(
4213                             (struct device_reg_83xx __iomem *)ha->nx_pcibase);
4214         } else if (ha->reg) {
4215                 iounmap(ha->reg);
4216         }
4217
4218         if (ha->reset_tmplt.buff)
4219                 vfree(ha->reset_tmplt.buff);
4220
4221         pci_release_regions(ha->pdev);
4222 }
4223
4224 /**
4225  * qla4xxx_mem_alloc - allocates memory for use by adapter.
4226  * @ha: Pointer to host adapter structure
4227  *
4228  * Allocates DMA memory for request and response queues. Also allocates memory
4229  * for srbs.
4230  **/
4231 static int qla4xxx_mem_alloc(struct scsi_qla_host *ha)
4232 {
4233         unsigned long align;
4234
4235         /* Allocate contiguous block of DMA memory for queues. */
4236         ha->queues_len = ((REQUEST_QUEUE_DEPTH * QUEUE_SIZE) +
4237                           (RESPONSE_QUEUE_DEPTH * QUEUE_SIZE) +
4238                           sizeof(struct shadow_regs) +
4239                           MEM_ALIGN_VALUE +
4240                           (PAGE_SIZE - 1)) & ~(PAGE_SIZE - 1);
4241         ha->queues = dma_alloc_coherent(&ha->pdev->dev, ha->queues_len,
4242                                         &ha->queues_dma, GFP_KERNEL);
4243         if (ha->queues == NULL) {
4244                 ql4_printk(KERN_WARNING, ha,
4245                     "Memory Allocation failed - queues.\n");
4246
4247                 goto mem_alloc_error_exit;
4248         }
4249
4250         /*
4251          * As per RISC alignment requirements -- the bus-address must be a
4252          * multiple of the request-ring size (in bytes).
4253          */
4254         align = 0;
4255         if ((unsigned long)ha->queues_dma & (MEM_ALIGN_VALUE - 1))
4256                 align = MEM_ALIGN_VALUE - ((unsigned long)ha->queues_dma &
4257                                            (MEM_ALIGN_VALUE - 1));
4258
4259         /* Update request and response queue pointers. */
4260         ha->request_dma = ha->queues_dma + align;
4261         ha->request_ring = (struct queue_entry *) (ha->queues + align);
4262         ha->response_dma = ha->queues_dma + align +
4263                 (REQUEST_QUEUE_DEPTH * QUEUE_SIZE);
4264         ha->response_ring = (struct queue_entry *) (ha->queues + align +
4265                                                     (REQUEST_QUEUE_DEPTH *
4266                                                      QUEUE_SIZE));
4267         ha->shadow_regs_dma = ha->queues_dma + align +
4268                 (REQUEST_QUEUE_DEPTH * QUEUE_SIZE) +
4269                 (RESPONSE_QUEUE_DEPTH * QUEUE_SIZE);
4270         ha->shadow_regs = (struct shadow_regs *) (ha->queues + align +
4271                                                   (REQUEST_QUEUE_DEPTH *
4272                                                    QUEUE_SIZE) +
4273                                                   (RESPONSE_QUEUE_DEPTH *
4274                                                    QUEUE_SIZE));
4275
4276         /* Allocate memory for srb pool. */
4277         ha->srb_mempool = mempool_create(SRB_MIN_REQ, mempool_alloc_slab,
4278                                          mempool_free_slab, srb_cachep);
4279         if (ha->srb_mempool == NULL) {
4280                 ql4_printk(KERN_WARNING, ha,
4281                     "Memory Allocation failed - SRB Pool.\n");
4282
4283                 goto mem_alloc_error_exit;
4284         }
4285
4286         ha->chap_dma_pool = dma_pool_create("ql4_chap", &ha->pdev->dev,
4287                                             CHAP_DMA_BLOCK_SIZE, 8, 0);
4288
4289         if (ha->chap_dma_pool == NULL) {
4290                 ql4_printk(KERN_WARNING, ha,
4291                     "%s: chap_dma_pool allocation failed..\n", __func__);
4292                 goto mem_alloc_error_exit;
4293         }
4294
4295         ha->fw_ddb_dma_pool = dma_pool_create("ql4_fw_ddb", &ha->pdev->dev,
4296                                               DDB_DMA_BLOCK_SIZE, 8, 0);
4297
4298         if (ha->fw_ddb_dma_pool == NULL) {
4299                 ql4_printk(KERN_WARNING, ha,
4300                            "%s: fw_ddb_dma_pool allocation failed..\n",
4301                            __func__);
4302                 goto mem_alloc_error_exit;
4303         }
4304
4305         return QLA_SUCCESS;
4306
4307 mem_alloc_error_exit:
4308         return QLA_ERROR;
4309 }
4310
4311 /**
4312  * qla4_8xxx_check_temp - Check the ISP82XX temperature.
4313  * @ha: adapter block pointer.
4314  *
4315  * Note: The caller should not hold the idc lock.
4316  **/
4317 static int qla4_8xxx_check_temp(struct scsi_qla_host *ha)
4318 {
4319         uint32_t temp, temp_state, temp_val;
4320         int status = QLA_SUCCESS;
4321
4322         temp = qla4_8xxx_rd_direct(ha, QLA8XXX_CRB_TEMP_STATE);
4323
4324         temp_state = qla82xx_get_temp_state(temp);
4325         temp_val = qla82xx_get_temp_val(temp);
4326
4327         if (temp_state == QLA82XX_TEMP_PANIC) {
4328                 ql4_printk(KERN_WARNING, ha, "Device temperature %d degrees C"
4329                            " exceeds maximum allowed. Hardware has been shut"
4330                            " down.\n", temp_val);
4331                 status = QLA_ERROR;
4332         } else if (temp_state == QLA82XX_TEMP_WARN) {
4333                 if (ha->temperature == QLA82XX_TEMP_NORMAL)
4334                         ql4_printk(KERN_WARNING, ha, "Device temperature %d"
4335                                    " degrees C exceeds operating range."
4336                                    " Immediate action needed.\n", temp_val);
4337         } else {
4338                 if (ha->temperature == QLA82XX_TEMP_WARN)
4339                         ql4_printk(KERN_INFO, ha, "Device temperature is"
4340                                    " now %d degrees C in normal range.\n",
4341                                    temp_val);
4342         }
4343         ha->temperature = temp_state;
4344         return status;
4345 }
4346
4347 /**
4348  * qla4_8xxx_check_fw_alive  - Check firmware health
4349  * @ha: Pointer to host adapter structure.
4350  *
4351  * Context: Interrupt
4352  **/
4353 static int qla4_8xxx_check_fw_alive(struct scsi_qla_host *ha)
4354 {
4355         uint32_t fw_heartbeat_counter;
4356         int status = QLA_SUCCESS;
4357
4358         fw_heartbeat_counter = qla4_8xxx_rd_direct(ha,
4359                                                    QLA8XXX_PEG_ALIVE_COUNTER);
4360         /* If PEG_ALIVE_COUNTER is 0xffffffff, AER/EEH is in progress, ignore */
4361         if (fw_heartbeat_counter == 0xffffffff) {
4362                 DEBUG2(printk(KERN_WARNING "scsi%ld: %s: Device in frozen "
4363                     "state, QLA82XX_PEG_ALIVE_COUNTER is 0xffffffff\n",
4364                     ha->host_no, __func__));
4365                 return status;
4366         }
4367
4368         if (ha->fw_heartbeat_counter == fw_heartbeat_counter) {
4369                 ha->seconds_since_last_heartbeat++;
4370                 /* FW not alive after 2 seconds */
4371                 if (ha->seconds_since_last_heartbeat == 2) {
4372                         ha->seconds_since_last_heartbeat = 0;
4373                         qla4_8xxx_dump_peg_reg(ha);
4374                         status = QLA_ERROR;
4375                 }
4376         } else
4377                 ha->seconds_since_last_heartbeat = 0;
4378
4379         ha->fw_heartbeat_counter = fw_heartbeat_counter;
4380         return status;
4381 }
4382
4383 static void qla4_8xxx_process_fw_error(struct scsi_qla_host *ha)
4384 {
4385         uint32_t halt_status;
4386         int halt_status_unrecoverable = 0;
4387
4388         halt_status = qla4_8xxx_rd_direct(ha, QLA8XXX_PEG_HALT_STATUS1);
4389
4390         if (is_qla8022(ha)) {
4391                 ql4_printk(KERN_INFO, ha, "%s: disabling pause transmit on port 0 & 1.\n",
4392                            __func__);
4393                 qla4_82xx_wr_32(ha, QLA82XX_CRB_NIU + 0x98,
4394                                 CRB_NIU_XG_PAUSE_CTL_P0 |
4395                                 CRB_NIU_XG_PAUSE_CTL_P1);
4396
4397                 if (QLA82XX_FWERROR_CODE(halt_status) == 0x67)
4398                         ql4_printk(KERN_ERR, ha, "%s: Firmware aborted with error code 0x00006700. Device is being reset\n",
4399                                    __func__);
4400                 if (halt_status & HALT_STATUS_UNRECOVERABLE)
4401                         halt_status_unrecoverable = 1;
4402         } else if (is_qla8032(ha) || is_qla8042(ha)) {
4403                 if (halt_status & QLA83XX_HALT_STATUS_FW_RESET)
4404                         ql4_printk(KERN_ERR, ha, "%s: Firmware error detected device is being reset\n",
4405                                    __func__);
4406                 else if (halt_status & QLA83XX_HALT_STATUS_UNRECOVERABLE)
4407                         halt_status_unrecoverable = 1;
4408         }
4409
4410         /*
4411          * Since we cannot change dev_state in interrupt context,
4412          * set appropriate DPC flag then wakeup DPC
4413          */
4414         if (halt_status_unrecoverable) {
4415                 set_bit(DPC_HA_UNRECOVERABLE, &ha->dpc_flags);
4416         } else {
4417                 ql4_printk(KERN_INFO, ha, "%s: detect abort needed!\n",
4418                            __func__);
4419                 set_bit(DPC_RESET_HA, &ha->dpc_flags);
4420         }
4421         qla4xxx_mailbox_premature_completion(ha);
4422         qla4xxx_wake_dpc(ha);
4423 }
4424
4425 /**
4426  * qla4_8xxx_watchdog - Poll dev state
4427  * @ha: Pointer to host adapter structure.
4428  *
4429  * Context: Interrupt
4430  **/
4431 void qla4_8xxx_watchdog(struct scsi_qla_host *ha)
4432 {
4433         uint32_t dev_state;
4434         uint32_t idc_ctrl;
4435
4436         if (is_qla8032(ha) &&
4437             (qla4_83xx_is_detached(ha) == QLA_SUCCESS))
4438                 WARN_ONCE(1, "%s: iSCSI function %d marked invisible\n",
4439                           __func__, ha->func_num);
4440
4441         /* don't poll if reset is going on */
4442         if (!(test_bit(DPC_RESET_ACTIVE, &ha->dpc_flags) ||
4443             test_bit(DPC_RESET_HA, &ha->dpc_flags) ||
4444             test_bit(DPC_RETRY_RESET_HA, &ha->dpc_flags))) {
4445                 dev_state = qla4_8xxx_rd_direct(ha, QLA8XXX_CRB_DEV_STATE);
4446
4447                 if (qla4_8xxx_check_temp(ha)) {
4448                         if (is_qla8022(ha)) {
4449                                 ql4_printk(KERN_INFO, ha, "disabling pause transmit on port 0 & 1.\n");
4450                                 qla4_82xx_wr_32(ha, QLA82XX_CRB_NIU + 0x98,
4451                                                 CRB_NIU_XG_PAUSE_CTL_P0 |
4452                                                 CRB_NIU_XG_PAUSE_CTL_P1);
4453                         }
4454                         set_bit(DPC_HA_UNRECOVERABLE, &ha->dpc_flags);
4455                         qla4xxx_wake_dpc(ha);
4456                 } else if (dev_state == QLA8XXX_DEV_NEED_RESET &&
4457                            !test_bit(DPC_RESET_HA, &ha->dpc_flags)) {
4458
4459                         ql4_printk(KERN_INFO, ha, "%s: HW State: NEED RESET!\n",
4460                                    __func__);
4461
4462                         if (is_qla8032(ha) || is_qla8042(ha)) {
4463                                 idc_ctrl = qla4_83xx_rd_reg(ha,
4464                                                         QLA83XX_IDC_DRV_CTRL);
4465                                 if (!(idc_ctrl & GRACEFUL_RESET_BIT1)) {
4466                                         ql4_printk(KERN_INFO, ha, "%s: Graceful reset bit is not set\n",
4467                                                    __func__);
4468                                         qla4xxx_mailbox_premature_completion(
4469                                                                             ha);
4470                                 }
4471                         }
4472
4473                         if ((is_qla8032(ha) || is_qla8042(ha)) ||
4474                             (is_qla8022(ha) && !ql4xdontresethba)) {
4475                                 set_bit(DPC_RESET_HA, &ha->dpc_flags);
4476                                 qla4xxx_wake_dpc(ha);
4477                         }
4478                 } else if (dev_state == QLA8XXX_DEV_NEED_QUIESCENT &&
4479                     !test_bit(DPC_HA_NEED_QUIESCENT, &ha->dpc_flags)) {
4480                         ql4_printk(KERN_INFO, ha, "%s: HW State: NEED QUIES!\n",
4481                             __func__);
4482                         set_bit(DPC_HA_NEED_QUIESCENT, &ha->dpc_flags);
4483                         qla4xxx_wake_dpc(ha);
4484                 } else  {
4485                         /* Check firmware health */
4486                         if (qla4_8xxx_check_fw_alive(ha))
4487                                 qla4_8xxx_process_fw_error(ha);
4488                 }
4489         }
4490 }
4491
4492 static void qla4xxx_check_relogin_flash_ddb(struct iscsi_cls_session *cls_sess)
4493 {
4494         struct iscsi_session *sess;
4495         struct ddb_entry *ddb_entry;
4496         struct scsi_qla_host *ha;
4497
4498         sess = cls_sess->dd_data;
4499         ddb_entry = sess->dd_data;
4500         ha = ddb_entry->ha;
4501
4502         if (!(ddb_entry->ddb_type == FLASH_DDB))
4503                 return;
4504
4505         if (adapter_up(ha) && !test_bit(DF_RELOGIN, &ddb_entry->flags) &&
4506             !iscsi_is_session_online(cls_sess)) {
4507                 if (atomic_read(&ddb_entry->retry_relogin_timer) !=
4508                     INVALID_ENTRY) {
4509                         if (atomic_read(&ddb_entry->retry_relogin_timer) ==
4510                                         0) {
4511                                 atomic_set(&ddb_entry->retry_relogin_timer,
4512                                            INVALID_ENTRY);
4513                                 set_bit(DPC_RELOGIN_DEVICE, &ha->dpc_flags);
4514                                 set_bit(DF_RELOGIN, &ddb_entry->flags);
4515                                 DEBUG2(ql4_printk(KERN_INFO, ha,
4516                                        "%s: index [%d] login device\n",
4517                                         __func__, ddb_entry->fw_ddb_index));
4518                         } else
4519                                 atomic_dec(&ddb_entry->retry_relogin_timer);
4520                 }
4521         }
4522
4523         /* Wait for relogin to timeout */
4524         if (atomic_read(&ddb_entry->relogin_timer) &&
4525             (atomic_dec_and_test(&ddb_entry->relogin_timer) != 0)) {
4526                 /*
4527                  * If the relogin times out and the device is
4528                  * still NOT ONLINE then try and relogin again.
4529                  */
4530                 if (!iscsi_is_session_online(cls_sess)) {
4531                         /* Reset retry relogin timer */
4532                         atomic_inc(&ddb_entry->relogin_retry_count);
4533                         DEBUG2(ql4_printk(KERN_INFO, ha,
4534                                 "%s: index[%d] relogin timed out-retrying"
4535                                 " relogin (%d), retry (%d)\n", __func__,
4536                                 ddb_entry->fw_ddb_index,
4537                                 atomic_read(&ddb_entry->relogin_retry_count),
4538                                 ddb_entry->default_time2wait + 4));
4539                         set_bit(DPC_RELOGIN_DEVICE, &ha->dpc_flags);
4540                         atomic_set(&ddb_entry->retry_relogin_timer,
4541                                    ddb_entry->default_time2wait + 4);
4542                 }
4543         }
4544 }
4545
4546 /**
4547  * qla4xxx_timer - checks every second for work to do.
4548  * @t: Context to obtain pointer to host adapter structure.
4549  **/
4550 static void qla4xxx_timer(struct timer_list *t)
4551 {
4552         struct scsi_qla_host *ha = from_timer(ha, t, timer);
4553         int start_dpc = 0;
4554         uint16_t w;
4555
4556         iscsi_host_for_each_session(ha->host, qla4xxx_check_relogin_flash_ddb);
4557
4558         /* If we are in the middle of AER/EEH processing
4559          * skip any processing and reschedule the timer
4560          */
4561         if (test_bit(AF_EEH_BUSY, &ha->flags)) {
4562                 mod_timer(&ha->timer, jiffies + HZ);
4563                 return;
4564         }
4565
4566         /* Hardware read to trigger an EEH error during mailbox waits. */
4567         if (!pci_channel_offline(ha->pdev))
4568                 pci_read_config_word(ha->pdev, PCI_VENDOR_ID, &w);
4569
4570         if (is_qla80XX(ha))
4571                 qla4_8xxx_watchdog(ha);
4572
4573         if (is_qla40XX(ha)) {
4574                 /* Check for heartbeat interval. */
4575                 if (ha->firmware_options & FWOPT_HEARTBEAT_ENABLE &&
4576                     ha->heartbeat_interval != 0) {
4577                         ha->seconds_since_last_heartbeat++;
4578                         if (ha->seconds_since_last_heartbeat >
4579                             ha->heartbeat_interval + 2)
4580                                 set_bit(DPC_RESET_HA, &ha->dpc_flags);
4581                 }
4582         }
4583
4584         /* Process any deferred work. */
4585         if (!list_empty(&ha->work_list))
4586                 start_dpc++;
4587
4588         /* Wakeup the dpc routine for this adapter, if needed. */
4589         if (start_dpc ||
4590              test_bit(DPC_RESET_HA, &ha->dpc_flags) ||
4591              test_bit(DPC_RETRY_RESET_HA, &ha->dpc_flags) ||
4592              test_bit(DPC_RELOGIN_DEVICE, &ha->dpc_flags) ||
4593              test_bit(DPC_RESET_HA_FW_CONTEXT, &ha->dpc_flags) ||
4594              test_bit(DPC_RESET_HA_INTR, &ha->dpc_flags) ||
4595              test_bit(DPC_GET_DHCP_IP_ADDR, &ha->dpc_flags) ||
4596              test_bit(DPC_LINK_CHANGED, &ha->dpc_flags) ||
4597              test_bit(DPC_HA_UNRECOVERABLE, &ha->dpc_flags) ||
4598              test_bit(DPC_HA_NEED_QUIESCENT, &ha->dpc_flags) ||
4599              test_bit(DPC_SYSFS_DDB_EXPORT, &ha->dpc_flags) ||
4600              test_bit(DPC_AEN, &ha->dpc_flags)) {
4601                 DEBUG2(printk("scsi%ld: %s: scheduling dpc routine"
4602                               " - dpc flags = 0x%lx\n",
4603                               ha->host_no, __func__, ha->dpc_flags));
4604                 qla4xxx_wake_dpc(ha);
4605         }
4606
4607         /* Reschedule timer thread to call us back in one second */
4608         mod_timer(&ha->timer, jiffies + HZ);
4609
4610         DEBUG2(ha->seconds_since_last_intr++);
4611 }
4612
4613 /**
4614  * qla4xxx_cmd_wait - waits for all outstanding commands to complete
4615  * @ha: Pointer to host adapter structure.
4616  *
4617  * This routine stalls the driver until all outstanding commands are returned.
4618  * Caller must release the Hardware Lock prior to calling this routine.
4619  **/
4620 static int qla4xxx_cmd_wait(struct scsi_qla_host *ha)
4621 {
4622         uint32_t index = 0;
4623         unsigned long flags;
4624         struct scsi_cmnd *cmd;
4625         unsigned long wtime;
4626         uint32_t wtmo;
4627
4628         if (is_qla40XX(ha))
4629                 wtmo = WAIT_CMD_TOV;
4630         else
4631                 wtmo = ha->nx_reset_timeout / 2;
4632
4633         wtime = jiffies + (wtmo * HZ);
4634
4635         DEBUG2(ql4_printk(KERN_INFO, ha,
4636                           "Wait up to %u seconds for cmds to complete\n",
4637                           wtmo));
4638
4639         while (!time_after_eq(jiffies, wtime)) {
4640                 spin_lock_irqsave(&ha->hardware_lock, flags);
4641                 /* Find a command that hasn't completed. */
4642                 for (index = 0; index < ha->host->can_queue; index++) {
4643                         cmd = scsi_host_find_tag(ha->host, index);
4644                         /*
4645                          * We cannot just check if the index is valid,
4646                          * becase if we are run from the scsi eh, then
4647                          * the scsi/block layer is going to prevent
4648                          * the tag from being released.
4649                          */
4650                         if (cmd != NULL && CMD_SP(cmd))
4651                                 break;
4652                 }
4653                 spin_unlock_irqrestore(&ha->hardware_lock, flags);
4654
4655                 /* If No Commands are pending, wait is complete */
4656                 if (index == ha->host->can_queue)
4657                         return QLA_SUCCESS;
4658
4659                 msleep(1000);
4660         }
4661         /* If we timed out on waiting for commands to come back
4662          * return ERROR. */
4663         return QLA_ERROR;
4664 }
4665
4666 int qla4xxx_hw_reset(struct scsi_qla_host *ha)
4667 {
4668         uint32_t ctrl_status;
4669         unsigned long flags = 0;
4670
4671         DEBUG2(printk(KERN_ERR "scsi%ld: %s\n", ha->host_no, __func__));
4672
4673         if (ql4xxx_lock_drvr_wait(ha) != QLA_SUCCESS)
4674                 return QLA_ERROR;
4675
4676         spin_lock_irqsave(&ha->hardware_lock, flags);
4677
4678         /*
4679          * If the SCSI Reset Interrupt bit is set, clear it.
4680          * Otherwise, the Soft Reset won't work.
4681          */
4682         ctrl_status = readw(&ha->reg->ctrl_status);
4683         if ((ctrl_status & CSR_SCSI_RESET_INTR) != 0)
4684                 writel(set_rmask(CSR_SCSI_RESET_INTR), &ha->reg->ctrl_status);
4685
4686         /* Issue Soft Reset */
4687         writel(set_rmask(CSR_SOFT_RESET), &ha->reg->ctrl_status);
4688         readl(&ha->reg->ctrl_status);
4689
4690         spin_unlock_irqrestore(&ha->hardware_lock, flags);
4691         return QLA_SUCCESS;
4692 }
4693
4694 /**
4695  * qla4xxx_soft_reset - performs soft reset.
4696  * @ha: Pointer to host adapter structure.
4697  **/
4698 int qla4xxx_soft_reset(struct scsi_qla_host *ha)
4699 {
4700         uint32_t max_wait_time;
4701         unsigned long flags = 0;
4702         int status;
4703         uint32_t ctrl_status;
4704
4705         status = qla4xxx_hw_reset(ha);
4706         if (status != QLA_SUCCESS)
4707                 return status;
4708
4709         status = QLA_ERROR;
4710         /* Wait until the Network Reset Intr bit is cleared */
4711         max_wait_time = RESET_INTR_TOV;
4712         do {
4713                 spin_lock_irqsave(&ha->hardware_lock, flags);
4714                 ctrl_status = readw(&ha->reg->ctrl_status);
4715                 spin_unlock_irqrestore(&ha->hardware_lock, flags);
4716
4717                 if ((ctrl_status & CSR_NET_RESET_INTR) == 0)
4718                         break;
4719
4720                 msleep(1000);
4721         } while ((--max_wait_time));
4722
4723         if ((ctrl_status & CSR_NET_RESET_INTR) != 0) {
4724                 DEBUG2(printk(KERN_WARNING
4725                               "scsi%ld: Network Reset Intr not cleared by "
4726                               "Network function, clearing it now!\n",
4727                               ha->host_no));
4728                 spin_lock_irqsave(&ha->hardware_lock, flags);
4729                 writel(set_rmask(CSR_NET_RESET_INTR), &ha->reg->ctrl_status);
4730                 readl(&ha->reg->ctrl_status);
4731                 spin_unlock_irqrestore(&ha->hardware_lock, flags);
4732         }
4733
4734         /* Wait until the firmware tells us the Soft Reset is done */
4735         max_wait_time = SOFT_RESET_TOV;
4736         do {
4737                 spin_lock_irqsave(&ha->hardware_lock, flags);
4738                 ctrl_status = readw(&ha->reg->ctrl_status);
4739                 spin_unlock_irqrestore(&ha->hardware_lock, flags);
4740
4741                 if ((ctrl_status & CSR_SOFT_RESET) == 0) {
4742                         status = QLA_SUCCESS;
4743                         break;
4744                 }
4745
4746                 msleep(1000);
4747         } while ((--max_wait_time));
4748
4749         /*
4750          * Also, make sure that the SCSI Reset Interrupt bit has been cleared
4751          * after the soft reset has taken place.
4752          */
4753         spin_lock_irqsave(&ha->hardware_lock, flags);
4754         ctrl_status = readw(&ha->reg->ctrl_status);
4755         if ((ctrl_status & CSR_SCSI_RESET_INTR) != 0) {
4756                 writel(set_rmask(CSR_SCSI_RESET_INTR), &ha->reg->ctrl_status);
4757                 readl(&ha->reg->ctrl_status);
4758         }
4759         spin_unlock_irqrestore(&ha->hardware_lock, flags);
4760
4761         /* If soft reset fails then most probably the bios on other
4762          * function is also enabled.
4763          * Since the initialization is sequential the other fn
4764          * wont be able to acknowledge the soft reset.
4765          * Issue a force soft reset to workaround this scenario.
4766          */
4767         if (max_wait_time == 0) {
4768                 /* Issue Force Soft Reset */
4769                 spin_lock_irqsave(&ha->hardware_lock, flags);
4770                 writel(set_rmask(CSR_FORCE_SOFT_RESET), &ha->reg->ctrl_status);
4771                 readl(&ha->reg->ctrl_status);
4772                 spin_unlock_irqrestore(&ha->hardware_lock, flags);
4773                 /* Wait until the firmware tells us the Soft Reset is done */
4774                 max_wait_time = SOFT_RESET_TOV;
4775                 do {
4776                         spin_lock_irqsave(&ha->hardware_lock, flags);
4777                         ctrl_status = readw(&ha->reg->ctrl_status);
4778                         spin_unlock_irqrestore(&ha->hardware_lock, flags);
4779
4780                         if ((ctrl_status & CSR_FORCE_SOFT_RESET) == 0) {
4781                                 status = QLA_SUCCESS;
4782                                 break;
4783                         }
4784
4785                         msleep(1000);
4786                 } while ((--max_wait_time));
4787         }
4788
4789         return status;
4790 }
4791
4792 /**
4793  * qla4xxx_abort_active_cmds - returns all outstanding i/o requests to O.S.
4794  * @ha: Pointer to host adapter structure.
4795  * @res: returned scsi status
4796  *
4797  * This routine is called just prior to a HARD RESET to return all
4798  * outstanding commands back to the Operating System.
4799  * Caller should make sure that the following locks are released
4800  * before this calling routine: Hardware lock, and io_request_lock.
4801  **/
4802 static void qla4xxx_abort_active_cmds(struct scsi_qla_host *ha, int res)
4803 {
4804         struct srb *srb;
4805         int i;
4806         unsigned long flags;
4807
4808         spin_lock_irqsave(&ha->hardware_lock, flags);
4809         for (i = 0; i < ha->host->can_queue; i++) {
4810                 srb = qla4xxx_del_from_active_array(ha, i);
4811                 if (srb != NULL) {
4812                         srb->cmd->result = res;
4813                         kref_put(&srb->srb_ref, qla4xxx_srb_compl);
4814                 }
4815         }
4816         spin_unlock_irqrestore(&ha->hardware_lock, flags);
4817 }
4818
4819 void qla4xxx_dead_adapter_cleanup(struct scsi_qla_host *ha)
4820 {
4821         clear_bit(AF_ONLINE, &ha->flags);
4822
4823         /* Disable the board */
4824         ql4_printk(KERN_INFO, ha, "Disabling the board\n");
4825
4826         qla4xxx_abort_active_cmds(ha, DID_NO_CONNECT << 16);
4827         qla4xxx_mark_all_devices_missing(ha);
4828         clear_bit(AF_INIT_DONE, &ha->flags);
4829 }
4830
4831 static void qla4xxx_fail_session(struct iscsi_cls_session *cls_session)
4832 {
4833         struct iscsi_session *sess;
4834         struct ddb_entry *ddb_entry;
4835
4836         sess = cls_session->dd_data;
4837         ddb_entry = sess->dd_data;
4838         ddb_entry->fw_ddb_device_state = DDB_DS_SESSION_FAILED;
4839
4840         if (ddb_entry->ddb_type == FLASH_DDB)
4841                 iscsi_block_session(ddb_entry->sess);
4842         else
4843                 iscsi_session_failure(cls_session->dd_data,
4844                                       ISCSI_ERR_CONN_FAILED);
4845 }
4846
4847 /**
4848  * qla4xxx_recover_adapter - recovers adapter after a fatal error
4849  * @ha: Pointer to host adapter structure.
4850  **/
4851 static int qla4xxx_recover_adapter(struct scsi_qla_host *ha)
4852 {
4853         int status = QLA_ERROR;
4854         uint8_t reset_chip = 0;
4855         uint32_t dev_state;
4856         unsigned long wait;
4857
4858         /* Stall incoming I/O until we are done */
4859         scsi_block_requests(ha->host);
4860         clear_bit(AF_ONLINE, &ha->flags);
4861         clear_bit(AF_LINK_UP, &ha->flags);
4862
4863         DEBUG2(ql4_printk(KERN_INFO, ha, "%s: adapter OFFLINE\n", __func__));
4864
4865         set_bit(DPC_RESET_ACTIVE, &ha->dpc_flags);
4866
4867         if ((is_qla8032(ha) || is_qla8042(ha)) &&
4868             !test_bit(DPC_RESET_HA_FW_CONTEXT, &ha->dpc_flags)) {
4869                 ql4_printk(KERN_INFO, ha, "%s: disabling pause transmit on port 0 & 1.\n",
4870                            __func__);
4871                 /* disable pause frame for ISP83xx */
4872                 qla4_83xx_disable_pause(ha);
4873         }
4874
4875         iscsi_host_for_each_session(ha->host, qla4xxx_fail_session);
4876
4877         if (test_bit(DPC_RESET_HA, &ha->dpc_flags))
4878                 reset_chip = 1;
4879
4880         /* For the DPC_RESET_HA_INTR case (ISP-4xxx specific)
4881          * do not reset adapter, jump to initialize_adapter */
4882         if (test_bit(DPC_RESET_HA_INTR, &ha->dpc_flags)) {
4883                 status = QLA_SUCCESS;
4884                 goto recover_ha_init_adapter;
4885         }
4886
4887         /* For the ISP-8xxx adapter, issue a stop_firmware if invoked
4888          * from eh_host_reset or ioctl module */
4889         if (is_qla80XX(ha) && !reset_chip &&
4890             test_bit(DPC_RESET_HA_FW_CONTEXT, &ha->dpc_flags)) {
4891
4892                 DEBUG2(ql4_printk(KERN_INFO, ha,
4893                     "scsi%ld: %s - Performing stop_firmware...\n",
4894                     ha->host_no, __func__));
4895                 status = ha->isp_ops->reset_firmware(ha);
4896                 if (status == QLA_SUCCESS) {
4897                         ha->isp_ops->disable_intrs(ha);
4898                         qla4xxx_process_aen(ha, FLUSH_DDB_CHANGED_AENS);
4899                         qla4xxx_abort_active_cmds(ha, DID_RESET << 16);
4900                 } else {
4901                         /* If the stop_firmware fails then
4902                          * reset the entire chip */
4903                         reset_chip = 1;
4904                         clear_bit(DPC_RESET_HA_FW_CONTEXT, &ha->dpc_flags);
4905                         set_bit(DPC_RESET_HA, &ha->dpc_flags);
4906                 }
4907         }
4908
4909         /* Issue full chip reset if recovering from a catastrophic error,
4910          * or if stop_firmware fails for ISP-8xxx.
4911          * This is the default case for ISP-4xxx */
4912         if (is_qla40XX(ha) || reset_chip) {
4913                 if (is_qla40XX(ha))
4914                         goto chip_reset;
4915
4916                 /* Check if 8XXX firmware is alive or not
4917                  * We may have arrived here from NEED_RESET
4918                  * detection only */
4919                 if (test_bit(AF_FW_RECOVERY, &ha->flags))
4920                         goto chip_reset;
4921
4922                 wait = jiffies + (FW_ALIVE_WAIT_TOV * HZ);
4923                 while (time_before(jiffies, wait)) {
4924                         if (qla4_8xxx_check_fw_alive(ha)) {
4925                                 qla4xxx_mailbox_premature_completion(ha);
4926                                 break;
4927                         }
4928
4929                         set_current_state(TASK_UNINTERRUPTIBLE);
4930                         schedule_timeout(HZ);
4931                 }
4932 chip_reset:
4933                 if (!test_bit(AF_FW_RECOVERY, &ha->flags))
4934                         qla4xxx_cmd_wait(ha);
4935
4936                 qla4xxx_process_aen(ha, FLUSH_DDB_CHANGED_AENS);
4937                 DEBUG2(ql4_printk(KERN_INFO, ha,
4938                     "scsi%ld: %s - Performing chip reset..\n",
4939                     ha->host_no, __func__));
4940                 status = ha->isp_ops->reset_chip(ha);
4941                 qla4xxx_abort_active_cmds(ha, DID_RESET << 16);
4942         }
4943
4944         /* Flush any pending ddb changed AENs */
4945         qla4xxx_process_aen(ha, FLUSH_DDB_CHANGED_AENS);
4946
4947 recover_ha_init_adapter:
4948         /* Upon successful firmware/chip reset, re-initialize the adapter */
4949         if (status == QLA_SUCCESS) {
4950                 /* For ISP-4xxx, force function 1 to always initialize
4951                  * before function 3 to prevent both funcions from
4952                  * stepping on top of the other */
4953                 if (is_qla40XX(ha) && (ha->mac_index == 3))
4954                         ssleep(6);
4955
4956                 /* NOTE: AF_ONLINE flag set upon successful completion of
4957                  * qla4xxx_initialize_adapter */
4958                 status = qla4xxx_initialize_adapter(ha, RESET_ADAPTER);
4959                 if (is_qla80XX(ha) && (status == QLA_ERROR)) {
4960                         status = qla4_8xxx_check_init_adapter_retry(ha);
4961                         if (status == QLA_ERROR) {
4962                                 ql4_printk(KERN_INFO, ha, "scsi%ld: %s: Don't retry recover adapter\n",
4963                                            ha->host_no, __func__);
4964                                 qla4xxx_dead_adapter_cleanup(ha);
4965                                 clear_bit(DPC_RETRY_RESET_HA, &ha->dpc_flags);
4966                                 clear_bit(DPC_RESET_HA, &ha->dpc_flags);
4967                                 clear_bit(DPC_RESET_HA_FW_CONTEXT,
4968                                           &ha->dpc_flags);
4969                                 goto exit_recover;
4970                         }
4971                 }
4972         }
4973
4974         /* Retry failed adapter initialization, if necessary
4975          * Do not retry initialize_adapter for RESET_HA_INTR (ISP-4xxx specific)
4976          * case to prevent ping-pong resets between functions */
4977         if (!test_bit(AF_ONLINE, &ha->flags) &&
4978             !test_bit(DPC_RESET_HA_INTR, &ha->dpc_flags)) {
4979                 /* Adapter initialization failed, see if we can retry
4980                  * resetting the ha.
4981                  * Since we don't want to block the DPC for too long
4982                  * with multiple resets in the same thread,
4983                  * utilize DPC to retry */
4984                 if (is_qla80XX(ha)) {
4985                         ha->isp_ops->idc_lock(ha);
4986                         dev_state = qla4_8xxx_rd_direct(ha,
4987                                                         QLA8XXX_CRB_DEV_STATE);
4988                         ha->isp_ops->idc_unlock(ha);
4989                         if (dev_state == QLA8XXX_DEV_FAILED) {
4990                                 ql4_printk(KERN_INFO, ha, "%s: don't retry "
4991                                            "recover adapter. H/W is in Failed "
4992                                            "state\n", __func__);
4993                                 qla4xxx_dead_adapter_cleanup(ha);
4994                                 clear_bit(DPC_RETRY_RESET_HA, &ha->dpc_flags);
4995                                 clear_bit(DPC_RESET_HA, &ha->dpc_flags);
4996                                 clear_bit(DPC_RESET_HA_FW_CONTEXT,
4997                                                 &ha->dpc_flags);
4998                                 status = QLA_ERROR;
4999
5000                                 goto exit_recover;
5001                         }
5002                 }
5003
5004                 if (!test_bit(DPC_RETRY_RESET_HA, &ha->dpc_flags)) {
5005                         ha->retry_reset_ha_cnt = MAX_RESET_HA_RETRIES;
5006                         DEBUG2(printk("scsi%ld: recover adapter - retrying "
5007                                       "(%d) more times\n", ha->host_no,
5008                                       ha->retry_reset_ha_cnt));
5009                         set_bit(DPC_RETRY_RESET_HA, &ha->dpc_flags);
5010                         status = QLA_ERROR;
5011                 } else {
5012                         if (ha->retry_reset_ha_cnt > 0) {
5013                                 /* Schedule another Reset HA--DPC will retry */
5014                                 ha->retry_reset_ha_cnt--;
5015                                 DEBUG2(printk("scsi%ld: recover adapter - "
5016                                               "retry remaining %d\n",
5017                                               ha->host_no,
5018                                               ha->retry_reset_ha_cnt));
5019                                 status = QLA_ERROR;
5020                         }
5021
5022                         if (ha->retry_reset_ha_cnt == 0) {
5023                                 /* Recover adapter retries have been exhausted.
5024                                  * Adapter DEAD */
5025                                 DEBUG2(printk("scsi%ld: recover adapter "
5026                                               "failed - board disabled\n",
5027                                               ha->host_no));
5028                                 qla4xxx_dead_adapter_cleanup(ha);
5029                                 clear_bit(DPC_RETRY_RESET_HA, &ha->dpc_flags);
5030                                 clear_bit(DPC_RESET_HA, &ha->dpc_flags);
5031                                 clear_bit(DPC_RESET_HA_FW_CONTEXT,
5032                                           &ha->dpc_flags);
5033                                 status = QLA_ERROR;
5034                         }
5035                 }
5036         } else {
5037                 clear_bit(DPC_RESET_HA, &ha->dpc_flags);
5038                 clear_bit(DPC_RESET_HA_FW_CONTEXT, &ha->dpc_flags);
5039                 clear_bit(DPC_RETRY_RESET_HA, &ha->dpc_flags);
5040         }
5041
5042 exit_recover:
5043         ha->adapter_error_count++;
5044
5045         if (test_bit(AF_ONLINE, &ha->flags))
5046                 ha->isp_ops->enable_intrs(ha);
5047
5048         scsi_unblock_requests(ha->host);
5049
5050         clear_bit(DPC_RESET_ACTIVE, &ha->dpc_flags);
5051         DEBUG2(printk("scsi%ld: recover adapter: %s\n", ha->host_no,
5052             status == QLA_ERROR ? "FAILED" : "SUCCEEDED"));
5053
5054         return status;
5055 }
5056
5057 static void qla4xxx_relogin_devices(struct iscsi_cls_session *cls_session)
5058 {
5059         struct iscsi_session *sess;
5060         struct ddb_entry *ddb_entry;
5061         struct scsi_qla_host *ha;
5062
5063         sess = cls_session->dd_data;
5064         ddb_entry = sess->dd_data;
5065         ha = ddb_entry->ha;
5066         if (!iscsi_is_session_online(cls_session)) {
5067                 if (ddb_entry->fw_ddb_device_state == DDB_DS_SESSION_ACTIVE) {
5068                         ql4_printk(KERN_INFO, ha, "scsi%ld: %s: ddb[%d]"
5069                                    " unblock session\n", ha->host_no, __func__,
5070                                    ddb_entry->fw_ddb_index);
5071                         iscsi_unblock_session(ddb_entry->sess);
5072                 } else {
5073                         /* Trigger relogin */
5074                         if (ddb_entry->ddb_type == FLASH_DDB) {
5075                                 if (!(test_bit(DF_RELOGIN, &ddb_entry->flags) ||
5076                                       test_bit(DF_DISABLE_RELOGIN,
5077                                                &ddb_entry->flags)))
5078                                         qla4xxx_arm_relogin_timer(ddb_entry);
5079                         } else
5080                                 iscsi_session_failure(cls_session->dd_data,
5081                                                       ISCSI_ERR_CONN_FAILED);
5082                 }
5083         }
5084 }
5085
5086 int qla4xxx_unblock_flash_ddb(struct iscsi_cls_session *cls_session)
5087 {
5088         struct iscsi_session *sess;
5089         struct ddb_entry *ddb_entry;
5090         struct scsi_qla_host *ha;
5091
5092         sess = cls_session->dd_data;
5093         ddb_entry = sess->dd_data;
5094         ha = ddb_entry->ha;
5095         ql4_printk(KERN_INFO, ha, "scsi%ld: %s: ddb[%d]"
5096                    " unblock session\n", ha->host_no, __func__,
5097                    ddb_entry->fw_ddb_index);
5098
5099         iscsi_unblock_session(ddb_entry->sess);
5100
5101         /* Start scan target */
5102         if (test_bit(AF_ONLINE, &ha->flags)) {
5103                 ql4_printk(KERN_INFO, ha, "scsi%ld: %s: ddb[%d]"
5104                            " start scan\n", ha->host_no, __func__,
5105                            ddb_entry->fw_ddb_index);
5106                 scsi_queue_work(ha->host, &ddb_entry->sess->scan_work);
5107         }
5108         return QLA_SUCCESS;
5109 }
5110
5111 int qla4xxx_unblock_ddb(struct iscsi_cls_session *cls_session)
5112 {
5113         struct iscsi_session *sess;
5114         struct ddb_entry *ddb_entry;
5115         struct scsi_qla_host *ha;
5116         int status = QLA_SUCCESS;
5117
5118         sess = cls_session->dd_data;
5119         ddb_entry = sess->dd_data;
5120         ha = ddb_entry->ha;
5121         ql4_printk(KERN_INFO, ha, "scsi%ld: %s: ddb[%d]"
5122                    " unblock user space session\n", ha->host_no, __func__,
5123                    ddb_entry->fw_ddb_index);
5124
5125         if (!iscsi_is_session_online(cls_session)) {
5126                 iscsi_conn_start(ddb_entry->conn);
5127                 iscsi_conn_login_event(ddb_entry->conn,
5128                                        ISCSI_CONN_STATE_LOGGED_IN);
5129         } else {
5130                 ql4_printk(KERN_INFO, ha,
5131                            "scsi%ld: %s: ddb[%d] session [%d] already logged in\n",
5132                            ha->host_no, __func__, ddb_entry->fw_ddb_index,
5133                            cls_session->sid);
5134                 status = QLA_ERROR;
5135         }
5136
5137         return status;
5138 }
5139
5140 static void qla4xxx_relogin_all_devices(struct scsi_qla_host *ha)
5141 {
5142         iscsi_host_for_each_session(ha->host, qla4xxx_relogin_devices);
5143 }
5144
5145 static void qla4xxx_relogin_flash_ddb(struct iscsi_cls_session *cls_sess)
5146 {
5147         uint16_t relogin_timer;
5148         struct iscsi_session *sess;
5149         struct ddb_entry *ddb_entry;
5150         struct scsi_qla_host *ha;
5151
5152         sess = cls_sess->dd_data;
5153         ddb_entry = sess->dd_data;
5154         ha = ddb_entry->ha;
5155
5156         relogin_timer = max(ddb_entry->default_relogin_timeout,
5157                             (uint16_t)RELOGIN_TOV);
5158         atomic_set(&ddb_entry->relogin_timer, relogin_timer);
5159
5160         DEBUG2(ql4_printk(KERN_INFO, ha,
5161                           "scsi%ld: Relogin index [%d]. TOV=%d\n", ha->host_no,
5162                           ddb_entry->fw_ddb_index, relogin_timer));
5163
5164         qla4xxx_login_flash_ddb(cls_sess);
5165 }
5166
5167 static void qla4xxx_dpc_relogin(struct iscsi_cls_session *cls_sess)
5168 {
5169         struct iscsi_session *sess;
5170         struct ddb_entry *ddb_entry;
5171         struct scsi_qla_host *ha;
5172
5173         sess = cls_sess->dd_data;
5174         ddb_entry = sess->dd_data;
5175         ha = ddb_entry->ha;
5176
5177         if (!(ddb_entry->ddb_type == FLASH_DDB))
5178                 return;
5179
5180         if (test_bit(DF_DISABLE_RELOGIN, &ddb_entry->flags))
5181                 return;
5182
5183         if (test_and_clear_bit(DF_RELOGIN, &ddb_entry->flags) &&
5184             !iscsi_is_session_online(cls_sess)) {
5185                 DEBUG2(ql4_printk(KERN_INFO, ha,
5186                                   "relogin issued\n"));
5187                 qla4xxx_relogin_flash_ddb(cls_sess);
5188         }
5189 }
5190
5191 void qla4xxx_wake_dpc(struct scsi_qla_host *ha)
5192 {
5193         if (ha->dpc_thread)
5194                 queue_work(ha->dpc_thread, &ha->dpc_work);
5195 }
5196
5197 static struct qla4_work_evt *
5198 qla4xxx_alloc_work(struct scsi_qla_host *ha, uint32_t data_size,
5199                    enum qla4_work_type type)
5200 {
5201         struct qla4_work_evt *e;
5202         uint32_t size = sizeof(struct qla4_work_evt) + data_size;
5203
5204         e = kzalloc(size, GFP_ATOMIC);
5205         if (!e)
5206                 return NULL;
5207
5208         INIT_LIST_HEAD(&e->list);
5209         e->type = type;
5210         return e;
5211 }
5212
5213 static void qla4xxx_post_work(struct scsi_qla_host *ha,
5214                              struct qla4_work_evt *e)
5215 {
5216         unsigned long flags;
5217
5218         spin_lock_irqsave(&ha->work_lock, flags);
5219         list_add_tail(&e->list, &ha->work_list);
5220         spin_unlock_irqrestore(&ha->work_lock, flags);
5221         qla4xxx_wake_dpc(ha);
5222 }
5223
5224 int qla4xxx_post_aen_work(struct scsi_qla_host *ha,
5225                           enum iscsi_host_event_code aen_code,
5226                           uint32_t data_size, uint8_t *data)
5227 {
5228         struct qla4_work_evt *e;
5229
5230         e = qla4xxx_alloc_work(ha, data_size, QLA4_EVENT_AEN);
5231         if (!e)
5232                 return QLA_ERROR;
5233
5234         e->u.aen.code = aen_code;
5235         e->u.aen.data_size = data_size;
5236         memcpy(e->u.aen.data, data, data_size);
5237
5238         qla4xxx_post_work(ha, e);
5239
5240         return QLA_SUCCESS;
5241 }
5242
5243 int qla4xxx_post_ping_evt_work(struct scsi_qla_host *ha,
5244                                uint32_t status, uint32_t pid,
5245                                uint32_t data_size, uint8_t *data)
5246 {
5247         struct qla4_work_evt *e;
5248
5249         e = qla4xxx_alloc_work(ha, data_size, QLA4_EVENT_PING_STATUS);
5250         if (!e)
5251                 return QLA_ERROR;
5252
5253         e->u.ping.status = status;
5254         e->u.ping.pid = pid;
5255         e->u.ping.data_size = data_size;
5256         memcpy(e->u.ping.data, data, data_size);
5257
5258         qla4xxx_post_work(ha, e);
5259
5260         return QLA_SUCCESS;
5261 }
5262
5263 static void qla4xxx_do_work(struct scsi_qla_host *ha)
5264 {
5265         struct qla4_work_evt *e, *tmp;
5266         unsigned long flags;
5267         LIST_HEAD(work);
5268
5269         spin_lock_irqsave(&ha->work_lock, flags);
5270         list_splice_init(&ha->work_list, &work);
5271         spin_unlock_irqrestore(&ha->work_lock, flags);
5272
5273         list_for_each_entry_safe(e, tmp, &work, list) {
5274                 list_del_init(&e->list);
5275
5276                 switch (e->type) {
5277                 case QLA4_EVENT_AEN:
5278                         iscsi_post_host_event(ha->host_no,
5279                                               &qla4xxx_iscsi_transport,
5280                                               e->u.aen.code,
5281                                               e->u.aen.data_size,
5282                                               e->u.aen.data);
5283                         break;
5284                 case QLA4_EVENT_PING_STATUS:
5285                         iscsi_ping_comp_event(ha->host_no,
5286                                               &qla4xxx_iscsi_transport,
5287                                               e->u.ping.status,
5288                                               e->u.ping.pid,
5289                                               e->u.ping.data_size,
5290                                               e->u.ping.data);
5291                         break;
5292                 default:
5293                         ql4_printk(KERN_WARNING, ha, "event type: 0x%x not "
5294                                    "supported", e->type);
5295                 }
5296                 kfree(e);
5297         }
5298 }
5299
5300 /**
5301  * qla4xxx_do_dpc - dpc routine
5302  * @work: Context to obtain pointer to host adapter structure.
5303  *
5304  * This routine is a task that is schedule by the interrupt handler
5305  * to perform the background processing for interrupts.  We put it
5306  * on a task queue that is consumed whenever the scheduler runs; that's
5307  * so you can do anything (i.e. put the process to sleep etc).  In fact,
5308  * the mid-level tries to sleep when it reaches the driver threshold
5309  * "host->can_queue". This can cause a panic if we were in our interrupt code.
5310  **/
5311 static void qla4xxx_do_dpc(struct work_struct *work)
5312 {
5313         struct scsi_qla_host *ha =
5314                 container_of(work, struct scsi_qla_host, dpc_work);
5315         int status = QLA_ERROR;
5316
5317         DEBUG2(ql4_printk(KERN_INFO, ha,
5318                           "scsi%ld: %s: DPC handler waking up. flags = 0x%08lx, dpc_flags = 0x%08lx\n",
5319                           ha->host_no, __func__, ha->flags, ha->dpc_flags));
5320
5321         /* Initialization not yet finished. Don't do anything yet. */
5322         if (!test_bit(AF_INIT_DONE, &ha->flags))
5323                 return;
5324
5325         if (test_bit(AF_EEH_BUSY, &ha->flags)) {
5326                 DEBUG2(printk(KERN_INFO "scsi%ld: %s: flags = %lx\n",
5327                     ha->host_no, __func__, ha->flags));
5328                 return;
5329         }
5330
5331         /* post events to application */
5332         qla4xxx_do_work(ha);
5333
5334         if (is_qla80XX(ha)) {
5335                 if (test_bit(DPC_HA_UNRECOVERABLE, &ha->dpc_flags)) {
5336                         if (is_qla8032(ha) || is_qla8042(ha)) {
5337                                 ql4_printk(KERN_INFO, ha, "%s: disabling pause transmit on port 0 & 1.\n",
5338                                            __func__);
5339                                 /* disable pause frame for ISP83xx */
5340                                 qla4_83xx_disable_pause(ha);
5341                         }
5342
5343                         ha->isp_ops->idc_lock(ha);
5344                         qla4_8xxx_wr_direct(ha, QLA8XXX_CRB_DEV_STATE,
5345                                             QLA8XXX_DEV_FAILED);
5346                         ha->isp_ops->idc_unlock(ha);
5347                         ql4_printk(KERN_INFO, ha, "HW State: FAILED\n");
5348                         qla4_8xxx_device_state_handler(ha);
5349                 }
5350
5351                 if (test_bit(DPC_POST_IDC_ACK, &ha->dpc_flags)) {
5352                         if (is_qla8042(ha)) {
5353                                 if (ha->idc_info.info2 &
5354                                     ENABLE_INTERNAL_LOOPBACK) {
5355                                         ql4_printk(KERN_INFO, ha, "%s: Disabling ACB\n",
5356                                                    __func__);
5357                                         status = qla4_84xx_config_acb(ha,
5358                                                             ACB_CONFIG_DISABLE);
5359                                         if (status != QLA_SUCCESS) {
5360                                                 ql4_printk(KERN_INFO, ha, "%s: ACB config failed\n",
5361                                                            __func__);
5362                                         }
5363                                 }
5364                         }
5365                         qla4_83xx_post_idc_ack(ha);
5366                         clear_bit(DPC_POST_IDC_ACK, &ha->dpc_flags);
5367                 }
5368
5369                 if (is_qla8042(ha) &&
5370                     test_bit(DPC_RESTORE_ACB, &ha->dpc_flags)) {
5371                         ql4_printk(KERN_INFO, ha, "%s: Restoring ACB\n",
5372                                    __func__);
5373                         if (qla4_84xx_config_acb(ha, ACB_CONFIG_SET) !=
5374                             QLA_SUCCESS) {
5375                                 ql4_printk(KERN_INFO, ha, "%s: ACB config failed ",
5376                                            __func__);
5377                         }
5378                         clear_bit(DPC_RESTORE_ACB, &ha->dpc_flags);
5379                 }
5380
5381                 if (test_and_clear_bit(DPC_HA_NEED_QUIESCENT, &ha->dpc_flags)) {
5382                         qla4_8xxx_need_qsnt_handler(ha);
5383                 }
5384         }
5385
5386         if (!test_bit(DPC_RESET_ACTIVE, &ha->dpc_flags) &&
5387             (test_bit(DPC_RESET_HA, &ha->dpc_flags) ||
5388             test_bit(DPC_RESET_HA_INTR, &ha->dpc_flags) ||
5389             test_bit(DPC_RESET_HA_FW_CONTEXT, &ha->dpc_flags))) {
5390                 if ((is_qla8022(ha) && ql4xdontresethba) ||
5391                     ((is_qla8032(ha) || is_qla8042(ha)) &&
5392                      qla4_83xx_idc_dontreset(ha))) {
5393                         DEBUG2(printk("scsi%ld: %s: Don't Reset HBA\n",
5394                             ha->host_no, __func__));
5395                         clear_bit(DPC_RESET_HA, &ha->dpc_flags);
5396                         clear_bit(DPC_RESET_HA_INTR, &ha->dpc_flags);
5397                         clear_bit(DPC_RESET_HA_FW_CONTEXT, &ha->dpc_flags);
5398                         goto dpc_post_reset_ha;
5399                 }
5400                 if (test_bit(DPC_RESET_HA_FW_CONTEXT, &ha->dpc_flags) ||
5401                     test_bit(DPC_RESET_HA, &ha->dpc_flags))
5402                         qla4xxx_recover_adapter(ha);
5403
5404                 if (test_bit(DPC_RESET_HA_INTR, &ha->dpc_flags)) {
5405                         uint8_t wait_time = RESET_INTR_TOV;
5406
5407                         while ((readw(&ha->reg->ctrl_status) &
5408                                 (CSR_SOFT_RESET | CSR_FORCE_SOFT_RESET)) != 0) {
5409                                 if (--wait_time == 0)
5410                                         break;
5411                                 msleep(1000);
5412                         }
5413                         if (wait_time == 0)
5414                                 DEBUG2(printk("scsi%ld: %s: SR|FSR "
5415                                               "bit not cleared-- resetting\n",
5416                                               ha->host_no, __func__));
5417                         qla4xxx_abort_active_cmds(ha, DID_RESET << 16);
5418                         if (ql4xxx_lock_drvr_wait(ha) == QLA_SUCCESS) {
5419                                 qla4xxx_process_aen(ha, FLUSH_DDB_CHANGED_AENS);
5420                                 status = qla4xxx_recover_adapter(ha);
5421                         }
5422                         clear_bit(DPC_RESET_HA_INTR, &ha->dpc_flags);
5423                         if (status == QLA_SUCCESS)
5424                                 ha->isp_ops->enable_intrs(ha);
5425                 }
5426         }
5427
5428 dpc_post_reset_ha:
5429         /* ---- process AEN? --- */
5430         if (test_and_clear_bit(DPC_AEN, &ha->dpc_flags))
5431                 qla4xxx_process_aen(ha, PROCESS_ALL_AENS);
5432
5433         /* ---- Get DHCP IP Address? --- */
5434         if (test_and_clear_bit(DPC_GET_DHCP_IP_ADDR, &ha->dpc_flags))
5435                 qla4xxx_get_dhcp_ip_address(ha);
5436
5437         /* ---- relogin device? --- */
5438         if (adapter_up(ha) &&
5439             test_and_clear_bit(DPC_RELOGIN_DEVICE, &ha->dpc_flags)) {
5440                 iscsi_host_for_each_session(ha->host, qla4xxx_dpc_relogin);
5441         }
5442
5443         /* ---- link change? --- */
5444         if (!test_bit(AF_LOOPBACK, &ha->flags) &&
5445             test_and_clear_bit(DPC_LINK_CHANGED, &ha->dpc_flags)) {
5446                 if (!test_bit(AF_LINK_UP, &ha->flags)) {
5447                         /* ---- link down? --- */
5448                         qla4xxx_mark_all_devices_missing(ha);
5449                 } else {
5450                         /* ---- link up? --- *
5451                          * F/W will auto login to all devices ONLY ONCE after
5452                          * link up during driver initialization and runtime
5453                          * fatal error recovery.  Therefore, the driver must
5454                          * manually relogin to devices when recovering from
5455                          * connection failures, logouts, expired KATO, etc. */
5456                         if (test_and_clear_bit(AF_BUILD_DDB_LIST, &ha->flags)) {
5457                                 qla4xxx_build_ddb_list(ha, ha->is_reset);
5458                                 iscsi_host_for_each_session(ha->host,
5459                                                 qla4xxx_login_flash_ddb);
5460                         } else
5461                                 qla4xxx_relogin_all_devices(ha);
5462                 }
5463         }
5464         if (test_and_clear_bit(DPC_SYSFS_DDB_EXPORT, &ha->dpc_flags)) {
5465                 if (qla4xxx_sysfs_ddb_export(ha))
5466                         ql4_printk(KERN_ERR, ha, "%s: Error exporting ddb to sysfs\n",
5467                                    __func__);
5468         }
5469 }
5470
5471 /**
5472  * qla4xxx_free_adapter - release the adapter
5473  * @ha: pointer to adapter structure
5474  **/
5475 static void qla4xxx_free_adapter(struct scsi_qla_host *ha)
5476 {
5477         qla4xxx_abort_active_cmds(ha, DID_NO_CONNECT << 16);
5478
5479         /* Turn-off interrupts on the card. */
5480         ha->isp_ops->disable_intrs(ha);
5481
5482         if (is_qla40XX(ha)) {
5483                 writel(set_rmask(CSR_SCSI_PROCESSOR_INTR),
5484                        &ha->reg->ctrl_status);
5485                 readl(&ha->reg->ctrl_status);
5486         } else if (is_qla8022(ha)) {
5487                 writel(0, &ha->qla4_82xx_reg->host_int);
5488                 readl(&ha->qla4_82xx_reg->host_int);
5489         } else if (is_qla8032(ha) || is_qla8042(ha)) {
5490                 writel(0, &ha->qla4_83xx_reg->risc_intr);
5491                 readl(&ha->qla4_83xx_reg->risc_intr);
5492         }
5493
5494         /* Remove timer thread, if present */
5495         if (ha->timer_active)
5496                 qla4xxx_stop_timer(ha);
5497
5498         /* Kill the kernel thread for this host */
5499         if (ha->dpc_thread)
5500                 destroy_workqueue(ha->dpc_thread);
5501
5502         /* Kill the kernel thread for this host */
5503         if (ha->task_wq)
5504                 destroy_workqueue(ha->task_wq);
5505
5506         /* Put firmware in known state */
5507         ha->isp_ops->reset_firmware(ha);
5508
5509         if (is_qla80XX(ha)) {
5510                 ha->isp_ops->idc_lock(ha);
5511                 qla4_8xxx_clear_drv_active(ha);
5512                 ha->isp_ops->idc_unlock(ha);
5513         }
5514
5515         /* Detach interrupts */
5516         qla4xxx_free_irqs(ha);
5517
5518         /* free extra memory */
5519         qla4xxx_mem_free(ha);
5520 }
5521
5522 int qla4_8xxx_iospace_config(struct scsi_qla_host *ha)
5523 {
5524         int status = 0;
5525         unsigned long mem_base, mem_len;
5526         struct pci_dev *pdev = ha->pdev;
5527
5528         status = pci_request_regions(pdev, DRIVER_NAME);
5529         if (status) {
5530                 printk(KERN_WARNING
5531                     "scsi(%ld) Failed to reserve PIO regions (%s) "
5532                     "status=%d\n", ha->host_no, pci_name(pdev), status);
5533                 goto iospace_error_exit;
5534         }
5535
5536         DEBUG2(printk(KERN_INFO "%s: revision-id=%d\n",
5537             __func__, pdev->revision));
5538         ha->revision_id = pdev->revision;
5539
5540         /* remap phys address */
5541         mem_base = pci_resource_start(pdev, 0); /* 0 is for BAR 0 */
5542         mem_len = pci_resource_len(pdev, 0);
5543         DEBUG2(printk(KERN_INFO "%s: ioremap from %lx a size of %lx\n",
5544             __func__, mem_base, mem_len));
5545
5546         /* mapping of pcibase pointer */
5547         ha->nx_pcibase = (unsigned long)ioremap(mem_base, mem_len);
5548         if (!ha->nx_pcibase) {
5549                 printk(KERN_ERR
5550                     "cannot remap MMIO (%s), aborting\n", pci_name(pdev));
5551                 pci_release_regions(ha->pdev);
5552                 goto iospace_error_exit;
5553         }
5554
5555         /* Mapping of IO base pointer, door bell read and write pointer */
5556
5557         /* mapping of IO base pointer */
5558         if (is_qla8022(ha)) {
5559                 ha->qla4_82xx_reg = (struct device_reg_82xx  __iomem *)
5560                                     ((uint8_t *)ha->nx_pcibase + 0xbc000 +
5561                                      (ha->pdev->devfn << 11));
5562                 ha->nx_db_wr_ptr = (ha->pdev->devfn == 4 ? QLA82XX_CAM_RAM_DB1 :
5563                                     QLA82XX_CAM_RAM_DB2);
5564         } else if (is_qla8032(ha) || is_qla8042(ha)) {
5565                 ha->qla4_83xx_reg = (struct device_reg_83xx __iomem *)
5566                                     ((uint8_t *)ha->nx_pcibase);
5567         }
5568
5569         return 0;
5570 iospace_error_exit:
5571         return -ENOMEM;
5572 }
5573
5574 /***
5575  * qla4xxx_iospace_config - maps registers
5576  * @ha: pointer to adapter structure
5577  *
5578  * This routines maps HBA's registers from the pci address space
5579  * into the kernel virtual address space for memory mapped i/o.
5580  **/
5581 int qla4xxx_iospace_config(struct scsi_qla_host *ha)
5582 {
5583         unsigned long pio, pio_len, pio_flags;
5584         unsigned long mmio, mmio_len, mmio_flags;
5585
5586         pio = pci_resource_start(ha->pdev, 0);
5587         pio_len = pci_resource_len(ha->pdev, 0);
5588         pio_flags = pci_resource_flags(ha->pdev, 0);
5589         if (pio_flags & IORESOURCE_IO) {
5590                 if (pio_len < MIN_IOBASE_LEN) {
5591                         ql4_printk(KERN_WARNING, ha,
5592                                 "Invalid PCI I/O region size\n");
5593                         pio = 0;
5594                 }
5595         } else {
5596                 ql4_printk(KERN_WARNING, ha, "region #0 not a PIO resource\n");
5597                 pio = 0;
5598         }
5599
5600         /* Use MMIO operations for all accesses. */
5601         mmio = pci_resource_start(ha->pdev, 1);
5602         mmio_len = pci_resource_len(ha->pdev, 1);
5603         mmio_flags = pci_resource_flags(ha->pdev, 1);
5604
5605         if (!(mmio_flags & IORESOURCE_MEM)) {
5606                 ql4_printk(KERN_ERR, ha,
5607                     "region #0 not an MMIO resource, aborting\n");
5608
5609                 goto iospace_error_exit;
5610         }
5611
5612         if (mmio_len < MIN_IOBASE_LEN) {
5613                 ql4_printk(KERN_ERR, ha,
5614                     "Invalid PCI mem region size, aborting\n");
5615                 goto iospace_error_exit;
5616         }
5617
5618         if (pci_request_regions(ha->pdev, DRIVER_NAME)) {
5619                 ql4_printk(KERN_WARNING, ha,
5620                     "Failed to reserve PIO/MMIO regions\n");
5621
5622                 goto iospace_error_exit;
5623         }
5624
5625         ha->pio_address = pio;
5626         ha->pio_length = pio_len;
5627         ha->reg = ioremap(mmio, MIN_IOBASE_LEN);
5628         if (!ha->reg) {
5629                 ql4_printk(KERN_ERR, ha,
5630                     "cannot remap MMIO, aborting\n");
5631
5632                 goto iospace_error_exit;
5633         }
5634
5635         return 0;
5636
5637 iospace_error_exit:
5638         return -ENOMEM;
5639 }
5640
5641 static struct isp_operations qla4xxx_isp_ops = {
5642         .iospace_config         = qla4xxx_iospace_config,
5643         .pci_config             = qla4xxx_pci_config,
5644         .disable_intrs          = qla4xxx_disable_intrs,
5645         .enable_intrs           = qla4xxx_enable_intrs,
5646         .start_firmware         = qla4xxx_start_firmware,
5647         .intr_handler           = qla4xxx_intr_handler,
5648         .interrupt_service_routine = qla4xxx_interrupt_service_routine,
5649         .reset_chip             = qla4xxx_soft_reset,
5650         .reset_firmware         = qla4xxx_hw_reset,
5651         .queue_iocb             = qla4xxx_queue_iocb,
5652         .complete_iocb          = qla4xxx_complete_iocb,
5653         .rd_shdw_req_q_out      = qla4xxx_rd_shdw_req_q_out,
5654         .rd_shdw_rsp_q_in       = qla4xxx_rd_shdw_rsp_q_in,
5655         .get_sys_info           = qla4xxx_get_sys_info,
5656         .queue_mailbox_command  = qla4xxx_queue_mbox_cmd,
5657         .process_mailbox_interrupt = qla4xxx_process_mbox_intr,
5658 };
5659
5660 static struct isp_operations qla4_82xx_isp_ops = {
5661         .iospace_config         = qla4_8xxx_iospace_config,
5662         .pci_config             = qla4_8xxx_pci_config,
5663         .disable_intrs          = qla4_82xx_disable_intrs,
5664         .enable_intrs           = qla4_82xx_enable_intrs,
5665         .start_firmware         = qla4_8xxx_load_risc,
5666         .restart_firmware       = qla4_82xx_try_start_fw,
5667         .intr_handler           = qla4_82xx_intr_handler,
5668         .interrupt_service_routine = qla4_82xx_interrupt_service_routine,
5669         .need_reset             = qla4_8xxx_need_reset,
5670         .reset_chip             = qla4_82xx_isp_reset,
5671         .reset_firmware         = qla4_8xxx_stop_firmware,
5672         .queue_iocb             = qla4_82xx_queue_iocb,
5673         .complete_iocb          = qla4_82xx_complete_iocb,
5674         .rd_shdw_req_q_out      = qla4_82xx_rd_shdw_req_q_out,
5675         .rd_shdw_rsp_q_in       = qla4_82xx_rd_shdw_rsp_q_in,
5676         .get_sys_info           = qla4_8xxx_get_sys_info,
5677         .rd_reg_direct          = qla4_82xx_rd_32,
5678         .wr_reg_direct          = qla4_82xx_wr_32,
5679         .rd_reg_indirect        = qla4_82xx_md_rd_32,
5680         .wr_reg_indirect        = qla4_82xx_md_wr_32,
5681         .idc_lock               = qla4_82xx_idc_lock,
5682         .idc_unlock             = qla4_82xx_idc_unlock,
5683         .rom_lock_recovery      = qla4_82xx_rom_lock_recovery,
5684         .queue_mailbox_command  = qla4_82xx_queue_mbox_cmd,
5685         .process_mailbox_interrupt = qla4_82xx_process_mbox_intr,
5686 };
5687
5688 static struct isp_operations qla4_83xx_isp_ops = {
5689         .iospace_config         = qla4_8xxx_iospace_config,
5690         .pci_config             = qla4_8xxx_pci_config,
5691         .disable_intrs          = qla4_83xx_disable_intrs,
5692         .enable_intrs           = qla4_83xx_enable_intrs,
5693         .start_firmware         = qla4_8xxx_load_risc,
5694         .restart_firmware       = qla4_83xx_start_firmware,
5695         .intr_handler           = qla4_83xx_intr_handler,
5696         .interrupt_service_routine = qla4_83xx_interrupt_service_routine,
5697         .need_reset             = qla4_8xxx_need_reset,
5698         .reset_chip             = qla4_83xx_isp_reset,
5699         .reset_firmware         = qla4_8xxx_stop_firmware,
5700         .queue_iocb             = qla4_83xx_queue_iocb,
5701         .complete_iocb          = qla4_83xx_complete_iocb,
5702         .rd_shdw_req_q_out      = qla4xxx_rd_shdw_req_q_out,
5703         .rd_shdw_rsp_q_in       = qla4xxx_rd_shdw_rsp_q_in,
5704         .get_sys_info           = qla4_8xxx_get_sys_info,
5705         .rd_reg_direct          = qla4_83xx_rd_reg,
5706         .wr_reg_direct          = qla4_83xx_wr_reg,
5707         .rd_reg_indirect        = qla4_83xx_rd_reg_indirect,
5708         .wr_reg_indirect        = qla4_83xx_wr_reg_indirect,
5709         .idc_lock               = qla4_83xx_drv_lock,
5710         .idc_unlock             = qla4_83xx_drv_unlock,
5711         .rom_lock_recovery      = qla4_83xx_rom_lock_recovery,
5712         .queue_mailbox_command  = qla4_83xx_queue_mbox_cmd,
5713         .process_mailbox_interrupt = qla4_83xx_process_mbox_intr,
5714 };
5715
5716 uint16_t qla4xxx_rd_shdw_req_q_out(struct scsi_qla_host *ha)
5717 {
5718         return (uint16_t)le32_to_cpu(ha->shadow_regs->req_q_out);
5719 }
5720
5721 uint16_t qla4_82xx_rd_shdw_req_q_out(struct scsi_qla_host *ha)
5722 {
5723         return (uint16_t)le32_to_cpu(readl(&ha->qla4_82xx_reg->req_q_out));
5724 }
5725
5726 uint16_t qla4xxx_rd_shdw_rsp_q_in(struct scsi_qla_host *ha)
5727 {
5728         return (uint16_t)le32_to_cpu(ha->shadow_regs->rsp_q_in);
5729 }
5730
5731 uint16_t qla4_82xx_rd_shdw_rsp_q_in(struct scsi_qla_host *ha)
5732 {
5733         return (uint16_t)le32_to_cpu(readl(&ha->qla4_82xx_reg->rsp_q_in));
5734 }
5735
5736 static ssize_t qla4xxx_show_boot_eth_info(void *data, int type, char *buf)
5737 {
5738         struct scsi_qla_host *ha = data;
5739         char *str = buf;
5740         int rc;
5741
5742         switch (type) {
5743         case ISCSI_BOOT_ETH_FLAGS:
5744                 rc = sprintf(str, "%d\n", SYSFS_FLAG_FW_SEL_BOOT);
5745                 break;
5746         case ISCSI_BOOT_ETH_INDEX:
5747                 rc = sprintf(str, "0\n");
5748                 break;
5749         case ISCSI_BOOT_ETH_MAC:
5750                 rc = sysfs_format_mac(str, ha->my_mac,
5751                                       MAC_ADDR_LEN);
5752                 break;
5753         default:
5754                 rc = -ENOSYS;
5755                 break;
5756         }
5757         return rc;
5758 }
5759
5760 static umode_t qla4xxx_eth_get_attr_visibility(void *data, int type)
5761 {
5762         int rc;
5763
5764         switch (type) {
5765         case ISCSI_BOOT_ETH_FLAGS:
5766         case ISCSI_BOOT_ETH_MAC:
5767         case ISCSI_BOOT_ETH_INDEX:
5768                 rc = S_IRUGO;
5769                 break;
5770         default:
5771                 rc = 0;
5772                 break;
5773         }
5774         return rc;
5775 }
5776
5777 static ssize_t qla4xxx_show_boot_ini_info(void *data, int type, char *buf)
5778 {
5779         struct scsi_qla_host *ha = data;
5780         char *str = buf;
5781         int rc;
5782
5783         switch (type) {
5784         case ISCSI_BOOT_INI_INITIATOR_NAME:
5785                 rc = sprintf(str, "%s\n", ha->name_string);
5786                 break;
5787         default:
5788                 rc = -ENOSYS;
5789                 break;
5790         }
5791         return rc;
5792 }
5793
5794 static umode_t qla4xxx_ini_get_attr_visibility(void *data, int type)
5795 {
5796         int rc;
5797
5798         switch (type) {
5799         case ISCSI_BOOT_INI_INITIATOR_NAME:
5800                 rc = S_IRUGO;
5801                 break;
5802         default:
5803                 rc = 0;
5804                 break;
5805         }
5806         return rc;
5807 }
5808
5809 static ssize_t
5810 qla4xxx_show_boot_tgt_info(struct ql4_boot_session_info *boot_sess, int type,
5811                            char *buf)
5812 {
5813         struct ql4_conn_info *boot_conn = &boot_sess->conn_list[0];
5814         char *str = buf;
5815         int rc;
5816
5817         switch (type) {
5818         case ISCSI_BOOT_TGT_NAME:
5819                 rc = sprintf(buf, "%s\n", (char *)&boot_sess->target_name);
5820                 break;
5821         case ISCSI_BOOT_TGT_IP_ADDR:
5822                 if (boot_sess->conn_list[0].dest_ipaddr.ip_type == 0x1)
5823                         rc = sprintf(buf, "%pI4\n",
5824                                      &boot_conn->dest_ipaddr.ip_address);
5825                 else
5826                         rc = sprintf(str, "%pI6\n",
5827                                      &boot_conn->dest_ipaddr.ip_address);
5828                 break;
5829         case ISCSI_BOOT_TGT_PORT:
5830                         rc = sprintf(str, "%d\n", boot_conn->dest_port);
5831                 break;
5832         case ISCSI_BOOT_TGT_CHAP_NAME:
5833                 rc = sprintf(str,  "%.*s\n",
5834                              boot_conn->chap.target_chap_name_length,
5835                              (char *)&boot_conn->chap.target_chap_name);
5836                 break;
5837         case ISCSI_BOOT_TGT_CHAP_SECRET:
5838                 rc = sprintf(str,  "%.*s\n",
5839                              boot_conn->chap.target_secret_length,
5840                              (char *)&boot_conn->chap.target_secret);
5841                 break;
5842         case ISCSI_BOOT_TGT_REV_CHAP_NAME:
5843                 rc = sprintf(str,  "%.*s\n",
5844                              boot_conn->chap.intr_chap_name_length,
5845                              (char *)&boot_conn->chap.intr_chap_name);
5846                 break;
5847         case ISCSI_BOOT_TGT_REV_CHAP_SECRET:
5848                 rc = sprintf(str,  "%.*s\n",
5849                              boot_conn->chap.intr_secret_length,
5850                              (char *)&boot_conn->chap.intr_secret);
5851                 break;
5852         case ISCSI_BOOT_TGT_FLAGS:
5853                 rc = sprintf(str, "%d\n", SYSFS_FLAG_FW_SEL_BOOT);
5854                 break;
5855         case ISCSI_BOOT_TGT_NIC_ASSOC:
5856                 rc = sprintf(str, "0\n");
5857                 break;
5858         default:
5859                 rc = -ENOSYS;
5860                 break;
5861         }
5862         return rc;
5863 }
5864
5865 static ssize_t qla4xxx_show_boot_tgt_pri_info(void *data, int type, char *buf)
5866 {
5867         struct scsi_qla_host *ha = data;
5868         struct ql4_boot_session_info *boot_sess = &(ha->boot_tgt.boot_pri_sess);
5869
5870         return qla4xxx_show_boot_tgt_info(boot_sess, type, buf);
5871 }
5872
5873 static ssize_t qla4xxx_show_boot_tgt_sec_info(void *data, int type, char *buf)
5874 {
5875         struct scsi_qla_host *ha = data;
5876         struct ql4_boot_session_info *boot_sess = &(ha->boot_tgt.boot_sec_sess);
5877
5878         return qla4xxx_show_boot_tgt_info(boot_sess, type, buf);
5879 }
5880
5881 static umode_t qla4xxx_tgt_get_attr_visibility(void *data, int type)
5882 {
5883         int rc;
5884
5885         switch (type) {
5886         case ISCSI_BOOT_TGT_NAME:
5887         case ISCSI_BOOT_TGT_IP_ADDR:
5888         case ISCSI_BOOT_TGT_PORT:
5889         case ISCSI_BOOT_TGT_CHAP_NAME:
5890         case ISCSI_BOOT_TGT_CHAP_SECRET:
5891         case ISCSI_BOOT_TGT_REV_CHAP_NAME:
5892         case ISCSI_BOOT_TGT_REV_CHAP_SECRET:
5893         case ISCSI_BOOT_TGT_NIC_ASSOC:
5894         case ISCSI_BOOT_TGT_FLAGS:
5895                 rc = S_IRUGO;
5896                 break;
5897         default:
5898                 rc = 0;
5899                 break;
5900         }
5901         return rc;
5902 }
5903
5904 static void qla4xxx_boot_release(void *data)
5905 {
5906         struct scsi_qla_host *ha = data;
5907
5908         scsi_host_put(ha->host);
5909 }
5910
5911 static int get_fw_boot_info(struct scsi_qla_host *ha, uint16_t ddb_index[])
5912 {
5913         dma_addr_t buf_dma;
5914         uint32_t addr, pri_addr, sec_addr;
5915         uint32_t offset;
5916         uint16_t func_num;
5917         uint8_t val;
5918         uint8_t *buf = NULL;
5919         size_t size = 13 * sizeof(uint8_t);
5920         int ret = QLA_SUCCESS;
5921
5922         func_num = PCI_FUNC(ha->pdev->devfn);
5923
5924         ql4_printk(KERN_INFO, ha, "%s: Get FW boot info for 0x%x func %d\n",
5925                    __func__, ha->pdev->device, func_num);
5926
5927         if (is_qla40XX(ha)) {
5928                 if (func_num == 1) {
5929                         addr = NVRAM_PORT0_BOOT_MODE;
5930                         pri_addr = NVRAM_PORT0_BOOT_PRI_TGT;
5931                         sec_addr = NVRAM_PORT0_BOOT_SEC_TGT;
5932                 } else if (func_num == 3) {
5933                         addr = NVRAM_PORT1_BOOT_MODE;
5934                         pri_addr = NVRAM_PORT1_BOOT_PRI_TGT;
5935                         sec_addr = NVRAM_PORT1_BOOT_SEC_TGT;
5936                 } else {
5937                         ret = QLA_ERROR;
5938                         goto exit_boot_info;
5939                 }
5940
5941                 /* Check Boot Mode */
5942                 val = rd_nvram_byte(ha, addr);
5943                 if (!(val & 0x07)) {
5944                         DEBUG2(ql4_printk(KERN_INFO, ha, "%s: Adapter boot "
5945                                           "options : 0x%x\n", __func__, val));
5946                         ret = QLA_ERROR;
5947                         goto exit_boot_info;
5948                 }
5949
5950                 /* get primary valid target index */
5951                 val = rd_nvram_byte(ha, pri_addr);
5952                 if (val & BIT_7)
5953                         ddb_index[0] = (val & 0x7f);
5954
5955                 /* get secondary valid target index */
5956                 val = rd_nvram_byte(ha, sec_addr);
5957                 if (val & BIT_7)
5958                         ddb_index[1] = (val & 0x7f);
5959                 goto exit_boot_info;
5960         } else if (is_qla80XX(ha)) {
5961                 buf = dma_alloc_coherent(&ha->pdev->dev, size,
5962                                          &buf_dma, GFP_KERNEL);
5963                 if (!buf) {
5964                         DEBUG2(ql4_printk(KERN_ERR, ha,
5965                                           "%s: Unable to allocate dma buffer\n",
5966                                            __func__));
5967                         ret = QLA_ERROR;
5968                         goto exit_boot_info;
5969                 }
5970
5971                 if (ha->port_num == 0)
5972                         offset = BOOT_PARAM_OFFSET_PORT0;
5973                 else if (ha->port_num == 1)
5974                         offset = BOOT_PARAM_OFFSET_PORT1;
5975                 else {
5976                         ret = QLA_ERROR;
5977                         goto exit_boot_info_free;
5978                 }
5979                 addr = FLASH_RAW_ACCESS_ADDR + (ha->hw.flt_iscsi_param * 4) +
5980                        offset;
5981                 if (qla4xxx_get_flash(ha, buf_dma, addr,
5982                                       13 * sizeof(uint8_t)) != QLA_SUCCESS) {
5983                         DEBUG2(ql4_printk(KERN_ERR, ha, "scsi%ld: %s: Get Flash"
5984                                           " failed\n", ha->host_no, __func__));
5985                         ret = QLA_ERROR;
5986                         goto exit_boot_info_free;
5987                 }
5988                 /* Check Boot Mode */
5989                 if (!(buf[1] & 0x07)) {
5990                         DEBUG2(ql4_printk(KERN_INFO, ha, "Firmware boot options"
5991                                           " : 0x%x\n", buf[1]));
5992                         ret = QLA_ERROR;
5993                         goto exit_boot_info_free;
5994                 }
5995
5996                 /* get primary valid target index */
5997                 if (buf[2] & BIT_7)
5998                         ddb_index[0] = buf[2] & 0x7f;
5999
6000                 /* get secondary valid target index */
6001                 if (buf[11] & BIT_7)
6002                         ddb_index[1] = buf[11] & 0x7f;
6003         } else {
6004                 ret = QLA_ERROR;
6005                 goto exit_boot_info;
6006         }
6007
6008         DEBUG2(ql4_printk(KERN_INFO, ha, "%s: Primary target ID %d, Secondary"
6009                           " target ID %d\n", __func__, ddb_index[0],
6010                           ddb_index[1]));
6011
6012 exit_boot_info_free:
6013         dma_free_coherent(&ha->pdev->dev, size, buf, buf_dma);
6014 exit_boot_info:
6015         ha->pri_ddb_idx = ddb_index[0];
6016         ha->sec_ddb_idx = ddb_index[1];
6017         return ret;
6018 }
6019
6020 /**
6021  * qla4xxx_get_bidi_chap - Get a BIDI CHAP user and password
6022  * @ha: pointer to adapter structure
6023  * @username: CHAP username to be returned
6024  * @password: CHAP password to be returned
6025  *
6026  * If a boot entry has BIDI CHAP enabled then we need to set the BIDI CHAP
6027  * user and password in the sysfs entry in /sys/firmware/iscsi_boot#/.
6028  * So from the CHAP cache find the first BIDI CHAP entry and set it
6029  * to the boot record in sysfs.
6030  **/
6031 static int qla4xxx_get_bidi_chap(struct scsi_qla_host *ha, char *username,
6032                             char *password)
6033 {
6034         int i, ret = -EINVAL;
6035         int max_chap_entries = 0;
6036         struct ql4_chap_table *chap_table;
6037
6038         if (is_qla80XX(ha))
6039                 max_chap_entries = (ha->hw.flt_chap_size / 2) /
6040                                                 sizeof(struct ql4_chap_table);
6041         else
6042                 max_chap_entries = MAX_CHAP_ENTRIES_40XX;
6043
6044         if (!ha->chap_list) {
6045                 ql4_printk(KERN_ERR, ha, "Do not have CHAP table cache\n");
6046                 return ret;
6047         }
6048
6049         mutex_lock(&ha->chap_sem);
6050         for (i = 0; i < max_chap_entries; i++) {
6051                 chap_table = (struct ql4_chap_table *)ha->chap_list + i;
6052                 if (chap_table->cookie !=
6053                     __constant_cpu_to_le16(CHAP_VALID_COOKIE)) {
6054                         continue;
6055                 }
6056
6057                 if (chap_table->flags & BIT_7) /* local */
6058                         continue;
6059
6060                 if (!(chap_table->flags & BIT_6)) /* Not BIDI */
6061                         continue;
6062
6063                 strlcpy(password, chap_table->secret, QL4_CHAP_MAX_SECRET_LEN);
6064                 strlcpy(username, chap_table->name, QL4_CHAP_MAX_NAME_LEN);
6065                 ret = 0;
6066                 break;
6067         }
6068         mutex_unlock(&ha->chap_sem);
6069
6070         return ret;
6071 }
6072
6073
6074 static int qla4xxx_get_boot_target(struct scsi_qla_host *ha,
6075                                    struct ql4_boot_session_info *boot_sess,
6076                                    uint16_t ddb_index)
6077 {
6078         struct ql4_conn_info *boot_conn = &boot_sess->conn_list[0];
6079         struct dev_db_entry *fw_ddb_entry;
6080         dma_addr_t fw_ddb_entry_dma;
6081         uint16_t idx;
6082         uint16_t options;
6083         int ret = QLA_SUCCESS;
6084
6085         fw_ddb_entry = dma_alloc_coherent(&ha->pdev->dev, sizeof(*fw_ddb_entry),
6086                                           &fw_ddb_entry_dma, GFP_KERNEL);
6087         if (!fw_ddb_entry) {
6088                 DEBUG2(ql4_printk(KERN_ERR, ha,
6089                                   "%s: Unable to allocate dma buffer.\n",
6090                                   __func__));
6091                 ret = QLA_ERROR;
6092                 return ret;
6093         }
6094
6095         if (qla4xxx_bootdb_by_index(ha, fw_ddb_entry,
6096                                    fw_ddb_entry_dma, ddb_index)) {
6097                 DEBUG2(ql4_printk(KERN_INFO, ha, "%s: No Flash DDB found at "
6098                                   "index [%d]\n", __func__, ddb_index));
6099                 ret = QLA_ERROR;
6100                 goto exit_boot_target;
6101         }
6102
6103         /* Update target name and IP from DDB */
6104         memcpy(boot_sess->target_name, fw_ddb_entry->iscsi_name,
6105                min(sizeof(boot_sess->target_name),
6106                    sizeof(fw_ddb_entry->iscsi_name)));
6107
6108         options = le16_to_cpu(fw_ddb_entry->options);
6109         if (options & DDB_OPT_IPV6_DEVICE) {
6110                 memcpy(&boot_conn->dest_ipaddr.ip_address,
6111                        &fw_ddb_entry->ip_addr[0], IPv6_ADDR_LEN);
6112         } else {
6113                 boot_conn->dest_ipaddr.ip_type = 0x1;
6114                 memcpy(&boot_conn->dest_ipaddr.ip_address,
6115                        &fw_ddb_entry->ip_addr[0], IP_ADDR_LEN);
6116         }
6117
6118         boot_conn->dest_port = le16_to_cpu(fw_ddb_entry->port);
6119
6120         /* update chap information */
6121         idx = __le16_to_cpu(fw_ddb_entry->chap_tbl_idx);
6122
6123         if (BIT_7 & le16_to_cpu(fw_ddb_entry->iscsi_options))   {
6124
6125                 DEBUG2(ql4_printk(KERN_INFO, ha, "Setting chap\n"));
6126
6127                 ret = qla4xxx_get_chap(ha, (char *)&boot_conn->chap.
6128                                        target_chap_name,
6129                                        (char *)&boot_conn->chap.target_secret,
6130                                        idx);
6131                 if (ret) {
6132                         ql4_printk(KERN_ERR, ha, "Failed to set chap\n");
6133                         ret = QLA_ERROR;
6134                         goto exit_boot_target;
6135                 }
6136
6137                 boot_conn->chap.target_chap_name_length = QL4_CHAP_MAX_NAME_LEN;
6138                 boot_conn->chap.target_secret_length = QL4_CHAP_MAX_SECRET_LEN;
6139         }
6140
6141         if (BIT_4 & le16_to_cpu(fw_ddb_entry->iscsi_options)) {
6142
6143                 DEBUG2(ql4_printk(KERN_INFO, ha, "Setting BIDI chap\n"));
6144
6145                 ret = qla4xxx_get_bidi_chap(ha,
6146                                     (char *)&boot_conn->chap.intr_chap_name,
6147                                     (char *)&boot_conn->chap.intr_secret);
6148
6149                 if (ret) {
6150                         ql4_printk(KERN_ERR, ha, "Failed to set BIDI chap\n");
6151                         ret = QLA_ERROR;
6152                         goto exit_boot_target;
6153                 }
6154
6155                 boot_conn->chap.intr_chap_name_length = QL4_CHAP_MAX_NAME_LEN;
6156                 boot_conn->chap.intr_secret_length = QL4_CHAP_MAX_SECRET_LEN;
6157         }
6158
6159 exit_boot_target:
6160         dma_free_coherent(&ha->pdev->dev, sizeof(*fw_ddb_entry),
6161                           fw_ddb_entry, fw_ddb_entry_dma);
6162         return ret;
6163 }
6164
6165 static int qla4xxx_get_boot_info(struct scsi_qla_host *ha)
6166 {
6167         uint16_t ddb_index[2];
6168         int ret = QLA_ERROR;
6169         int rval;
6170
6171         memset(ddb_index, 0, sizeof(ddb_index));
6172         ddb_index[0] = 0xffff;
6173         ddb_index[1] = 0xffff;
6174         ret = get_fw_boot_info(ha, ddb_index);
6175         if (ret != QLA_SUCCESS) {
6176                 DEBUG2(ql4_printk(KERN_INFO, ha,
6177                                 "%s: No boot target configured.\n", __func__));
6178                 return ret;
6179         }
6180
6181         if (ql4xdisablesysfsboot)
6182                 return QLA_SUCCESS;
6183
6184         if (ddb_index[0] == 0xffff)
6185                 goto sec_target;
6186
6187         rval = qla4xxx_get_boot_target(ha, &(ha->boot_tgt.boot_pri_sess),
6188                                       ddb_index[0]);
6189         if (rval != QLA_SUCCESS) {
6190                 DEBUG2(ql4_printk(KERN_INFO, ha, "%s: Primary boot target not "
6191                                   "configured\n", __func__));
6192         } else
6193                 ret = QLA_SUCCESS;
6194
6195 sec_target:
6196         if (ddb_index[1] == 0xffff)
6197                 goto exit_get_boot_info;
6198
6199         rval = qla4xxx_get_boot_target(ha, &(ha->boot_tgt.boot_sec_sess),
6200                                       ddb_index[1]);
6201         if (rval != QLA_SUCCESS) {
6202                 DEBUG2(ql4_printk(KERN_INFO, ha, "%s: Secondary boot target not"
6203                                   " configured\n", __func__));
6204         } else
6205                 ret = QLA_SUCCESS;
6206
6207 exit_get_boot_info:
6208         return ret;
6209 }
6210
6211 static int qla4xxx_setup_boot_info(struct scsi_qla_host *ha)
6212 {
6213         struct iscsi_boot_kobj *boot_kobj;
6214
6215         if (qla4xxx_get_boot_info(ha) != QLA_SUCCESS)
6216                 return QLA_ERROR;
6217
6218         if (ql4xdisablesysfsboot) {
6219                 ql4_printk(KERN_INFO, ha,
6220                            "%s: syfsboot disabled - driver will trigger login "
6221                            "and publish session for discovery .\n", __func__);
6222                 return QLA_SUCCESS;
6223         }
6224
6225
6226         ha->boot_kset = iscsi_boot_create_host_kset(ha->host->host_no);
6227         if (!ha->boot_kset)
6228                 goto kset_free;
6229
6230         if (!scsi_host_get(ha->host))
6231                 goto kset_free;
6232         boot_kobj = iscsi_boot_create_target(ha->boot_kset, 0, ha,
6233                                              qla4xxx_show_boot_tgt_pri_info,
6234                                              qla4xxx_tgt_get_attr_visibility,
6235                                              qla4xxx_boot_release);
6236         if (!boot_kobj)
6237                 goto put_host;
6238
6239         if (!scsi_host_get(ha->host))
6240                 goto kset_free;
6241         boot_kobj = iscsi_boot_create_target(ha->boot_kset, 1, ha,
6242                                              qla4xxx_show_boot_tgt_sec_info,
6243                                              qla4xxx_tgt_get_attr_visibility,
6244                                              qla4xxx_boot_release);
6245         if (!boot_kobj)
6246                 goto put_host;
6247
6248         if (!scsi_host_get(ha->host))
6249                 goto kset_free;
6250         boot_kobj = iscsi_boot_create_initiator(ha->boot_kset, 0, ha,
6251                                                qla4xxx_show_boot_ini_info,
6252                                                qla4xxx_ini_get_attr_visibility,
6253                                                qla4xxx_boot_release);
6254         if (!boot_kobj)
6255                 goto put_host;
6256
6257         if (!scsi_host_get(ha->host))
6258                 goto kset_free;
6259         boot_kobj = iscsi_boot_create_ethernet(ha->boot_kset, 0, ha,
6260                                                qla4xxx_show_boot_eth_info,
6261                                                qla4xxx_eth_get_attr_visibility,
6262                                                qla4xxx_boot_release);
6263         if (!boot_kobj)
6264                 goto put_host;
6265
6266         return QLA_SUCCESS;
6267
6268 put_host:
6269         scsi_host_put(ha->host);
6270 kset_free:
6271         iscsi_boot_destroy_kset(ha->boot_kset);
6272         return -ENOMEM;
6273 }
6274
6275
6276 static void qla4xxx_get_param_ddb(struct ddb_entry *ddb_entry,
6277                                   struct ql4_tuple_ddb *tddb)
6278 {
6279         struct iscsi_cls_session *cls_sess;
6280         struct iscsi_cls_conn *cls_conn;
6281         struct iscsi_session *sess;
6282         struct iscsi_conn *conn;
6283
6284         DEBUG2(printk(KERN_INFO "Func: %s\n", __func__));
6285         cls_sess = ddb_entry->sess;
6286         sess = cls_sess->dd_data;
6287         cls_conn = ddb_entry->conn;
6288         conn = cls_conn->dd_data;
6289
6290         tddb->tpgt = sess->tpgt;
6291         tddb->port = conn->persistent_port;
6292         strlcpy(tddb->iscsi_name, sess->targetname, ISCSI_NAME_SIZE);
6293         strlcpy(tddb->ip_addr, conn->persistent_address, DDB_IPADDR_LEN);
6294 }
6295
6296 static void qla4xxx_convert_param_ddb(struct dev_db_entry *fw_ddb_entry,
6297                                       struct ql4_tuple_ddb *tddb,
6298                                       uint8_t *flash_isid)
6299 {
6300         uint16_t options = 0;
6301
6302         tddb->tpgt = le32_to_cpu(fw_ddb_entry->tgt_portal_grp);
6303         memcpy(&tddb->iscsi_name[0], &fw_ddb_entry->iscsi_name[0],
6304                min(sizeof(tddb->iscsi_name), sizeof(fw_ddb_entry->iscsi_name)));
6305
6306         options = le16_to_cpu(fw_ddb_entry->options);
6307         if (options & DDB_OPT_IPV6_DEVICE)
6308                 sprintf(tddb->ip_addr, "%pI6", fw_ddb_entry->ip_addr);
6309         else
6310                 sprintf(tddb->ip_addr, "%pI4", fw_ddb_entry->ip_addr);
6311
6312         tddb->port = le16_to_cpu(fw_ddb_entry->port);
6313
6314         if (flash_isid == NULL)
6315                 memcpy(&tddb->isid[0], &fw_ddb_entry->isid[0],
6316                        sizeof(tddb->isid));
6317         else
6318                 memcpy(&tddb->isid[0], &flash_isid[0], sizeof(tddb->isid));
6319 }
6320
6321 static int qla4xxx_compare_tuple_ddb(struct scsi_qla_host *ha,
6322                                      struct ql4_tuple_ddb *old_tddb,
6323                                      struct ql4_tuple_ddb *new_tddb,
6324                                      uint8_t is_isid_compare)
6325 {
6326         if (strcmp(old_tddb->iscsi_name, new_tddb->iscsi_name))
6327                 return QLA_ERROR;
6328
6329         if (strcmp(old_tddb->ip_addr, new_tddb->ip_addr))
6330                 return QLA_ERROR;
6331
6332         if (old_tddb->port != new_tddb->port)
6333                 return QLA_ERROR;
6334
6335         /* For multi sessions, driver generates the ISID, so do not compare
6336          * ISID in reset path since it would be a comparison between the
6337          * driver generated ISID and firmware generated ISID. This could
6338          * lead to adding duplicated DDBs in the list as driver generated
6339          * ISID would not match firmware generated ISID.
6340          */
6341         if (is_isid_compare) {
6342                 DEBUG2(ql4_printk(KERN_INFO, ha,
6343                         "%s: old ISID [%pmR] New ISID [%pmR]\n",
6344                         __func__, old_tddb->isid, new_tddb->isid));
6345
6346                 if (memcmp(&old_tddb->isid[0], &new_tddb->isid[0],
6347                            sizeof(old_tddb->isid)))
6348                         return QLA_ERROR;
6349         }
6350
6351         DEBUG2(ql4_printk(KERN_INFO, ha,
6352                           "Match Found, fw[%d,%d,%s,%s], [%d,%d,%s,%s]",
6353                           old_tddb->port, old_tddb->tpgt, old_tddb->ip_addr,
6354                           old_tddb->iscsi_name, new_tddb->port, new_tddb->tpgt,
6355                           new_tddb->ip_addr, new_tddb->iscsi_name));
6356
6357         return QLA_SUCCESS;
6358 }
6359
6360 static int qla4xxx_is_session_exists(struct scsi_qla_host *ha,
6361                                      struct dev_db_entry *fw_ddb_entry,
6362                                      uint32_t *index)
6363 {
6364         struct ddb_entry *ddb_entry;
6365         struct ql4_tuple_ddb *fw_tddb = NULL;
6366         struct ql4_tuple_ddb *tmp_tddb = NULL;
6367         int idx;
6368         int ret = QLA_ERROR;
6369
6370         fw_tddb = vzalloc(sizeof(*fw_tddb));
6371         if (!fw_tddb) {
6372                 DEBUG2(ql4_printk(KERN_WARNING, ha,
6373                                   "Memory Allocation failed.\n"));
6374                 ret = QLA_SUCCESS;
6375                 goto exit_check;
6376         }
6377
6378         tmp_tddb = vzalloc(sizeof(*tmp_tddb));
6379         if (!tmp_tddb) {
6380                 DEBUG2(ql4_printk(KERN_WARNING, ha,
6381                                   "Memory Allocation failed.\n"));
6382                 ret = QLA_SUCCESS;
6383                 goto exit_check;
6384         }
6385
6386         qla4xxx_convert_param_ddb(fw_ddb_entry, fw_tddb, NULL);
6387
6388         for (idx = 0; idx < MAX_DDB_ENTRIES; idx++) {
6389                 ddb_entry = qla4xxx_lookup_ddb_by_fw_index(ha, idx);
6390                 if (ddb_entry == NULL)
6391                         continue;
6392
6393                 qla4xxx_get_param_ddb(ddb_entry, tmp_tddb);
6394                 if (!qla4xxx_compare_tuple_ddb(ha, fw_tddb, tmp_tddb, false)) {
6395                         ret = QLA_SUCCESS; /* found */
6396                         if (index != NULL)
6397                                 *index = idx;
6398                         goto exit_check;
6399                 }
6400         }
6401
6402 exit_check:
6403         if (fw_tddb)
6404                 vfree(fw_tddb);
6405         if (tmp_tddb)
6406                 vfree(tmp_tddb);
6407         return ret;
6408 }
6409
6410 /**
6411  * qla4xxx_check_existing_isid - check if target with same isid exist
6412  *                               in target list
6413  * @list_nt: list of target
6414  * @isid: isid to check
6415  *
6416  * This routine return QLA_SUCCESS if target with same isid exist
6417  **/
6418 static int qla4xxx_check_existing_isid(struct list_head *list_nt, uint8_t *isid)
6419 {
6420         struct qla_ddb_index *nt_ddb_idx, *nt_ddb_idx_tmp;
6421         struct dev_db_entry *fw_ddb_entry;
6422
6423         list_for_each_entry_safe(nt_ddb_idx, nt_ddb_idx_tmp, list_nt, list) {
6424                 fw_ddb_entry = &nt_ddb_idx->fw_ddb;
6425
6426                 if (memcmp(&fw_ddb_entry->isid[0], &isid[0],
6427                            sizeof(nt_ddb_idx->fw_ddb.isid)) == 0) {
6428                         return QLA_SUCCESS;
6429                 }
6430         }
6431         return QLA_ERROR;
6432 }
6433
6434 /**
6435  * qla4xxx_update_isid - compare ddbs and updated isid
6436  * @ha: Pointer to host adapter structure.
6437  * @list_nt: list of nt target
6438  * @fw_ddb_entry: firmware ddb entry
6439  *
6440  * This routine update isid if ddbs have same iqn, same isid and
6441  * different IP addr.
6442  * Return QLA_SUCCESS if isid is updated.
6443  **/
6444 static int qla4xxx_update_isid(struct scsi_qla_host *ha,
6445                                struct list_head *list_nt,
6446                                struct dev_db_entry *fw_ddb_entry)
6447 {
6448         uint8_t base_value, i;
6449
6450         base_value = fw_ddb_entry->isid[1] & 0x1f;
6451         for (i = 0; i < 8; i++) {
6452                 fw_ddb_entry->isid[1] = (base_value | (i << 5));
6453                 if (qla4xxx_check_existing_isid(list_nt, fw_ddb_entry->isid))
6454                         break;
6455         }
6456
6457         if (!qla4xxx_check_existing_isid(list_nt, fw_ddb_entry->isid))
6458                 return QLA_ERROR;
6459
6460         return QLA_SUCCESS;
6461 }
6462
6463 /**
6464  * qla4xxx_should_update_isid - check if isid need to update
6465  * @ha: Pointer to host adapter structure.
6466  * @old_tddb: ddb tuple
6467  * @new_tddb: ddb tuple
6468  *
6469  * Return QLA_SUCCESS if different IP, different PORT, same iqn,
6470  * same isid
6471  **/
6472 static int qla4xxx_should_update_isid(struct scsi_qla_host *ha,
6473                                       struct ql4_tuple_ddb *old_tddb,
6474                                       struct ql4_tuple_ddb *new_tddb)
6475 {
6476         if (strcmp(old_tddb->ip_addr, new_tddb->ip_addr) == 0) {
6477                 /* Same ip */
6478                 if (old_tddb->port == new_tddb->port)
6479                         return QLA_ERROR;
6480         }
6481
6482         if (strcmp(old_tddb->iscsi_name, new_tddb->iscsi_name))
6483                 /* different iqn */
6484                 return QLA_ERROR;
6485
6486         if (memcmp(&old_tddb->isid[0], &new_tddb->isid[0],
6487                    sizeof(old_tddb->isid)))
6488                 /* different isid */
6489                 return QLA_ERROR;
6490
6491         return QLA_SUCCESS;
6492 }
6493
6494 /**
6495  * qla4xxx_is_flash_ddb_exists - check if fw_ddb_entry already exists in list_nt
6496  * @ha: Pointer to host adapter structure.
6497  * @list_nt: list of nt target.
6498  * @fw_ddb_entry: firmware ddb entry.
6499  *
6500  * This routine check if fw_ddb_entry already exists in list_nt to avoid
6501  * duplicate ddb in list_nt.
6502  * Return QLA_SUCCESS if duplicate ddb exit in list_nl.
6503  * Note: This function also update isid of DDB if required.
6504  **/
6505
6506 static int qla4xxx_is_flash_ddb_exists(struct scsi_qla_host *ha,
6507                                        struct list_head *list_nt,
6508                                        struct dev_db_entry *fw_ddb_entry)
6509 {
6510         struct qla_ddb_index  *nt_ddb_idx, *nt_ddb_idx_tmp;
6511         struct ql4_tuple_ddb *fw_tddb = NULL;
6512         struct ql4_tuple_ddb *tmp_tddb = NULL;
6513         int rval, ret = QLA_ERROR;
6514
6515         fw_tddb = vzalloc(sizeof(*fw_tddb));
6516         if (!fw_tddb) {
6517                 DEBUG2(ql4_printk(KERN_WARNING, ha,
6518                                   "Memory Allocation failed.\n"));
6519                 ret = QLA_SUCCESS;
6520                 goto exit_check;
6521         }
6522
6523         tmp_tddb = vzalloc(sizeof(*tmp_tddb));
6524         if (!tmp_tddb) {
6525                 DEBUG2(ql4_printk(KERN_WARNING, ha,
6526                                   "Memory Allocation failed.\n"));
6527                 ret = QLA_SUCCESS;
6528                 goto exit_check;
6529         }
6530
6531         qla4xxx_convert_param_ddb(fw_ddb_entry, fw_tddb, NULL);
6532
6533         list_for_each_entry_safe(nt_ddb_idx, nt_ddb_idx_tmp, list_nt, list) {
6534                 qla4xxx_convert_param_ddb(&nt_ddb_idx->fw_ddb, tmp_tddb,
6535                                           nt_ddb_idx->flash_isid);
6536                 ret = qla4xxx_compare_tuple_ddb(ha, fw_tddb, tmp_tddb, true);
6537                 /* found duplicate ddb */
6538                 if (ret == QLA_SUCCESS)
6539                         goto exit_check;
6540         }
6541
6542         list_for_each_entry_safe(nt_ddb_idx, nt_ddb_idx_tmp, list_nt, list) {
6543                 qla4xxx_convert_param_ddb(&nt_ddb_idx->fw_ddb, tmp_tddb, NULL);
6544
6545                 ret = qla4xxx_should_update_isid(ha, tmp_tddb, fw_tddb);
6546                 if (ret == QLA_SUCCESS) {
6547                         rval = qla4xxx_update_isid(ha, list_nt, fw_ddb_entry);
6548                         if (rval == QLA_SUCCESS)
6549                                 ret = QLA_ERROR;
6550                         else
6551                                 ret = QLA_SUCCESS;
6552
6553                         goto exit_check;
6554                 }
6555         }
6556
6557 exit_check:
6558         if (fw_tddb)
6559                 vfree(fw_tddb);
6560         if (tmp_tddb)
6561                 vfree(tmp_tddb);
6562         return ret;
6563 }
6564
6565 static void qla4xxx_free_ddb_list(struct list_head *list_ddb)
6566 {
6567         struct qla_ddb_index  *ddb_idx, *ddb_idx_tmp;
6568
6569         list_for_each_entry_safe(ddb_idx, ddb_idx_tmp, list_ddb, list) {
6570                 list_del_init(&ddb_idx->list);
6571                 vfree(ddb_idx);
6572         }
6573 }
6574
6575 static struct iscsi_endpoint *qla4xxx_get_ep_fwdb(struct scsi_qla_host *ha,
6576                                         struct dev_db_entry *fw_ddb_entry)
6577 {
6578         struct iscsi_endpoint *ep;
6579         struct sockaddr_in *addr;
6580         struct sockaddr_in6 *addr6;
6581         struct sockaddr *t_addr;
6582         struct sockaddr_storage *dst_addr;
6583         char *ip;
6584
6585         /* TODO: need to destroy on unload iscsi_endpoint*/
6586         dst_addr = vmalloc(sizeof(*dst_addr));
6587         if (!dst_addr)
6588                 return NULL;
6589
6590         if (fw_ddb_entry->options & DDB_OPT_IPV6_DEVICE) {
6591                 t_addr = (struct sockaddr *)dst_addr;
6592                 t_addr->sa_family = AF_INET6;
6593                 addr6 = (struct sockaddr_in6 *)dst_addr;
6594                 ip = (char *)&addr6->sin6_addr;
6595                 memcpy(ip, fw_ddb_entry->ip_addr, IPv6_ADDR_LEN);
6596                 addr6->sin6_port = htons(le16_to_cpu(fw_ddb_entry->port));
6597
6598         } else {
6599                 t_addr = (struct sockaddr *)dst_addr;
6600                 t_addr->sa_family = AF_INET;
6601                 addr = (struct sockaddr_in *)dst_addr;
6602                 ip = (char *)&addr->sin_addr;
6603                 memcpy(ip, fw_ddb_entry->ip_addr, IP_ADDR_LEN);
6604                 addr->sin_port = htons(le16_to_cpu(fw_ddb_entry->port));
6605         }
6606
6607         ep = qla4xxx_ep_connect(ha->host, (struct sockaddr *)dst_addr, 0);
6608         vfree(dst_addr);
6609         return ep;
6610 }
6611
6612 static int qla4xxx_verify_boot_idx(struct scsi_qla_host *ha, uint16_t idx)
6613 {
6614         if (ql4xdisablesysfsboot)
6615                 return QLA_SUCCESS;
6616         if (idx == ha->pri_ddb_idx || idx == ha->sec_ddb_idx)
6617                 return QLA_ERROR;
6618         return QLA_SUCCESS;
6619 }
6620
6621 static void qla4xxx_setup_flash_ddb_entry(struct scsi_qla_host *ha,
6622                                           struct ddb_entry *ddb_entry,
6623                                           uint16_t idx)
6624 {
6625         uint16_t def_timeout;
6626
6627         ddb_entry->ddb_type = FLASH_DDB;
6628         ddb_entry->fw_ddb_index = INVALID_ENTRY;
6629         ddb_entry->fw_ddb_device_state = DDB_DS_NO_CONNECTION_ACTIVE;
6630         ddb_entry->ha = ha;
6631         ddb_entry->unblock_sess = qla4xxx_unblock_flash_ddb;
6632         ddb_entry->ddb_change = qla4xxx_flash_ddb_change;
6633         ddb_entry->chap_tbl_idx = INVALID_ENTRY;
6634
6635         atomic_set(&ddb_entry->retry_relogin_timer, INVALID_ENTRY);
6636         atomic_set(&ddb_entry->relogin_timer, 0);
6637         atomic_set(&ddb_entry->relogin_retry_count, 0);
6638         def_timeout = le16_to_cpu(ddb_entry->fw_ddb_entry.def_timeout);
6639         ddb_entry->default_relogin_timeout =
6640                 (def_timeout > LOGIN_TOV) && (def_timeout < LOGIN_TOV * 10) ?
6641                 def_timeout : LOGIN_TOV;
6642         ddb_entry->default_time2wait =
6643                 le16_to_cpu(ddb_entry->fw_ddb_entry.iscsi_def_time2wait);
6644
6645         if (ql4xdisablesysfsboot &&
6646             (idx == ha->pri_ddb_idx || idx == ha->sec_ddb_idx))
6647                 set_bit(DF_BOOT_TGT, &ddb_entry->flags);
6648 }
6649
6650 static void qla4xxx_wait_for_ip_configuration(struct scsi_qla_host *ha)
6651 {
6652         uint32_t idx = 0;
6653         uint32_t ip_idx[IP_ADDR_COUNT] = {0, 1, 2, 3}; /* 4 IP interfaces */
6654         uint32_t sts[MBOX_REG_COUNT];
6655         uint32_t ip_state;
6656         unsigned long wtime;
6657         int ret;
6658
6659         wtime = jiffies + (HZ * IP_CONFIG_TOV);
6660         do {
6661                 for (idx = 0; idx < IP_ADDR_COUNT; idx++) {
6662                         if (ip_idx[idx] == -1)
6663                                 continue;
6664
6665                         ret = qla4xxx_get_ip_state(ha, 0, ip_idx[idx], sts);
6666
6667                         if (ret == QLA_ERROR) {
6668                                 ip_idx[idx] = -1;
6669                                 continue;
6670                         }
6671
6672                         ip_state = (sts[1] & IP_STATE_MASK) >> IP_STATE_SHIFT;
6673
6674                         DEBUG2(ql4_printk(KERN_INFO, ha,
6675                                           "Waiting for IP state for idx = %d, state = 0x%x\n",
6676                                           ip_idx[idx], ip_state));
6677                         if (ip_state == IP_ADDRSTATE_UNCONFIGURED ||
6678                             ip_state == IP_ADDRSTATE_INVALID ||
6679                             ip_state == IP_ADDRSTATE_PREFERRED ||
6680                             ip_state == IP_ADDRSTATE_DEPRICATED ||
6681                             ip_state == IP_ADDRSTATE_DISABLING)
6682                                 ip_idx[idx] = -1;
6683                 }
6684
6685                 /* Break if all IP states checked */
6686                 if ((ip_idx[0] == -1) &&
6687                     (ip_idx[1] == -1) &&
6688                     (ip_idx[2] == -1) &&
6689                     (ip_idx[3] == -1))
6690                         break;
6691                 schedule_timeout_uninterruptible(HZ);
6692         } while (time_after(wtime, jiffies));
6693 }
6694
6695 static int qla4xxx_cmp_fw_stentry(struct dev_db_entry *fw_ddb_entry,
6696                                   struct dev_db_entry *flash_ddb_entry)
6697 {
6698         uint16_t options = 0;
6699         size_t ip_len = IP_ADDR_LEN;
6700
6701         options = le16_to_cpu(fw_ddb_entry->options);
6702         if (options & DDB_OPT_IPV6_DEVICE)
6703                 ip_len = IPv6_ADDR_LEN;
6704
6705         if (memcmp(fw_ddb_entry->ip_addr, flash_ddb_entry->ip_addr, ip_len))
6706                 return QLA_ERROR;
6707
6708         if (memcmp(&fw_ddb_entry->isid[0], &flash_ddb_entry->isid[0],
6709                    sizeof(fw_ddb_entry->isid)))
6710                 return QLA_ERROR;
6711
6712         if (memcmp(&fw_ddb_entry->port, &flash_ddb_entry->port,
6713                    sizeof(fw_ddb_entry->port)))
6714                 return QLA_ERROR;
6715
6716         return QLA_SUCCESS;
6717 }
6718
6719 static int qla4xxx_find_flash_st_idx(struct scsi_qla_host *ha,
6720                                      struct dev_db_entry *fw_ddb_entry,
6721                                      uint32_t fw_idx, uint32_t *flash_index)
6722 {
6723         struct dev_db_entry *flash_ddb_entry;
6724         dma_addr_t flash_ddb_entry_dma;
6725         uint32_t idx = 0;
6726         int max_ddbs;
6727         int ret = QLA_ERROR, status;
6728
6729         max_ddbs =  is_qla40XX(ha) ? MAX_DEV_DB_ENTRIES_40XX :
6730                                      MAX_DEV_DB_ENTRIES;
6731
6732         flash_ddb_entry = dma_pool_alloc(ha->fw_ddb_dma_pool, GFP_KERNEL,
6733                                          &flash_ddb_entry_dma);
6734         if (flash_ddb_entry == NULL || fw_ddb_entry == NULL) {
6735                 ql4_printk(KERN_ERR, ha, "Out of memory\n");
6736                 goto exit_find_st_idx;
6737         }
6738
6739         status = qla4xxx_flashdb_by_index(ha, flash_ddb_entry,
6740                                           flash_ddb_entry_dma, fw_idx);
6741         if (status == QLA_SUCCESS) {
6742                 status = qla4xxx_cmp_fw_stentry(fw_ddb_entry, flash_ddb_entry);
6743                 if (status == QLA_SUCCESS) {
6744                         *flash_index = fw_idx;
6745                         ret = QLA_SUCCESS;
6746                         goto exit_find_st_idx;
6747                 }
6748         }
6749
6750         for (idx = 0; idx < max_ddbs; idx++) {
6751                 status = qla4xxx_flashdb_by_index(ha, flash_ddb_entry,
6752                                                   flash_ddb_entry_dma, idx);
6753                 if (status == QLA_ERROR)
6754                         continue;
6755
6756                 status = qla4xxx_cmp_fw_stentry(fw_ddb_entry, flash_ddb_entry);
6757                 if (status == QLA_SUCCESS) {
6758                         *flash_index = idx;
6759                         ret = QLA_SUCCESS;
6760                         goto exit_find_st_idx;
6761                 }
6762         }
6763
6764         if (idx == max_ddbs)
6765                 ql4_printk(KERN_ERR, ha, "Failed to find ST [%d] in flash\n",
6766                            fw_idx);
6767
6768 exit_find_st_idx:
6769         if (flash_ddb_entry)
6770                 dma_pool_free(ha->fw_ddb_dma_pool, flash_ddb_entry,
6771                               flash_ddb_entry_dma);
6772
6773         return ret;
6774 }
6775
6776 static void qla4xxx_build_st_list(struct scsi_qla_host *ha,
6777                                   struct list_head *list_st)
6778 {
6779         struct qla_ddb_index  *st_ddb_idx;
6780         int max_ddbs;
6781         int fw_idx_size;
6782         struct dev_db_entry *fw_ddb_entry;
6783         dma_addr_t fw_ddb_dma;
6784         int ret;
6785         uint32_t idx = 0, next_idx = 0;
6786         uint32_t state = 0, conn_err = 0;
6787         uint32_t flash_index = -1;
6788         uint16_t conn_id = 0;
6789
6790         fw_ddb_entry = dma_pool_alloc(ha->fw_ddb_dma_pool, GFP_KERNEL,
6791                                       &fw_ddb_dma);
6792         if (fw_ddb_entry == NULL) {
6793                 DEBUG2(ql4_printk(KERN_ERR, ha, "Out of memory\n"));
6794                 goto exit_st_list;
6795         }
6796
6797         max_ddbs =  is_qla40XX(ha) ? MAX_DEV_DB_ENTRIES_40XX :
6798                                      MAX_DEV_DB_ENTRIES;
6799         fw_idx_size = sizeof(struct qla_ddb_index);
6800
6801         for (idx = 0; idx < max_ddbs; idx = next_idx) {
6802                 ret = qla4xxx_get_fwddb_entry(ha, idx, fw_ddb_entry, fw_ddb_dma,
6803                                               NULL, &next_idx, &state,
6804                                               &conn_err, NULL, &conn_id);
6805                 if (ret == QLA_ERROR)
6806                         break;
6807
6808                 /* Ignore DDB if invalid state (unassigned) */
6809                 if (state == DDB_DS_UNASSIGNED)
6810                         goto continue_next_st;
6811
6812                 /* Check if ST, add to the list_st */
6813                 if (strlen((char *) fw_ddb_entry->iscsi_name) != 0)
6814                         goto continue_next_st;
6815
6816                 st_ddb_idx = vzalloc(fw_idx_size);
6817                 if (!st_ddb_idx)
6818                         break;
6819
6820                 ret = qla4xxx_find_flash_st_idx(ha, fw_ddb_entry, idx,
6821                                                 &flash_index);
6822                 if (ret == QLA_ERROR) {
6823                         ql4_printk(KERN_ERR, ha,
6824                                    "No flash entry for ST at idx [%d]\n", idx);
6825                         st_ddb_idx->flash_ddb_idx = idx;
6826                 } else {
6827                         ql4_printk(KERN_INFO, ha,
6828                                    "ST at idx [%d] is stored at flash [%d]\n",
6829                                    idx, flash_index);
6830                         st_ddb_idx->flash_ddb_idx = flash_index;
6831                 }
6832
6833                 st_ddb_idx->fw_ddb_idx = idx;
6834
6835                 list_add_tail(&st_ddb_idx->list, list_st);
6836 continue_next_st:
6837                 if (next_idx == 0)
6838                         break;
6839         }
6840
6841 exit_st_list:
6842         if (fw_ddb_entry)
6843                 dma_pool_free(ha->fw_ddb_dma_pool, fw_ddb_entry, fw_ddb_dma);
6844 }
6845
6846 /**
6847  * qla4xxx_remove_failed_ddb - Remove inactive or failed ddb from list
6848  * @ha: pointer to adapter structure
6849  * @list_ddb: List from which failed ddb to be removed
6850  *
6851  * Iterate over the list of DDBs and find and remove DDBs that are either in
6852  * no connection active state or failed state
6853  **/
6854 static void qla4xxx_remove_failed_ddb(struct scsi_qla_host *ha,
6855                                       struct list_head *list_ddb)
6856 {
6857         struct qla_ddb_index  *ddb_idx, *ddb_idx_tmp;
6858         uint32_t next_idx = 0;
6859         uint32_t state = 0, conn_err = 0;
6860         int ret;
6861
6862         list_for_each_entry_safe(ddb_idx, ddb_idx_tmp, list_ddb, list) {
6863                 ret = qla4xxx_get_fwddb_entry(ha, ddb_idx->fw_ddb_idx,
6864                                               NULL, 0, NULL, &next_idx, &state,
6865                                               &conn_err, NULL, NULL);
6866                 if (ret == QLA_ERROR)
6867                         continue;
6868
6869                 if (state == DDB_DS_NO_CONNECTION_ACTIVE ||
6870                     state == DDB_DS_SESSION_FAILED) {
6871                         list_del_init(&ddb_idx->list);
6872                         vfree(ddb_idx);
6873                 }
6874         }
6875 }
6876
6877 static void qla4xxx_update_sess_disc_idx(struct scsi_qla_host *ha,
6878                                          struct ddb_entry *ddb_entry,
6879                                          struct dev_db_entry *fw_ddb_entry)
6880 {
6881         struct iscsi_cls_session *cls_sess;
6882         struct iscsi_session *sess;
6883         uint32_t max_ddbs = 0;
6884         uint16_t ddb_link = -1;
6885
6886         max_ddbs =  is_qla40XX(ha) ? MAX_DEV_DB_ENTRIES_40XX :
6887                                      MAX_DEV_DB_ENTRIES;
6888
6889         cls_sess = ddb_entry->sess;
6890         sess = cls_sess->dd_data;
6891
6892         ddb_link = le16_to_cpu(fw_ddb_entry->ddb_link);
6893         if (ddb_link < max_ddbs)
6894                 sess->discovery_parent_idx = ddb_link;
6895         else
6896                 sess->discovery_parent_idx = DDB_NO_LINK;
6897 }
6898
6899 static int qla4xxx_sess_conn_setup(struct scsi_qla_host *ha,
6900                                    struct dev_db_entry *fw_ddb_entry,
6901                                    int is_reset, uint16_t idx)
6902 {
6903         struct iscsi_cls_session *cls_sess;
6904         struct iscsi_session *sess;
6905         struct iscsi_cls_conn *cls_conn;
6906         struct iscsi_endpoint *ep;
6907         uint16_t cmds_max = 32;
6908         uint16_t conn_id = 0;
6909         uint32_t initial_cmdsn = 0;
6910         int ret = QLA_SUCCESS;
6911
6912         struct ddb_entry *ddb_entry = NULL;
6913
6914         /* Create session object, with INVALID_ENTRY,
6915          * the targer_id would get set when we issue the login
6916          */
6917         cls_sess = iscsi_session_setup(&qla4xxx_iscsi_transport, ha->host,
6918                                        cmds_max, sizeof(struct ddb_entry),
6919                                        sizeof(struct ql4_task_data),
6920                                        initial_cmdsn, INVALID_ENTRY);
6921         if (!cls_sess) {
6922                 ret = QLA_ERROR;
6923                 goto exit_setup;
6924         }
6925
6926         /*
6927          * so calling module_put function to decrement the
6928          * reference count.
6929          **/
6930         module_put(qla4xxx_iscsi_transport.owner);
6931         sess = cls_sess->dd_data;
6932         ddb_entry = sess->dd_data;
6933         ddb_entry->sess = cls_sess;
6934
6935         cls_sess->recovery_tmo = ql4xsess_recovery_tmo;
6936         memcpy(&ddb_entry->fw_ddb_entry, fw_ddb_entry,
6937                sizeof(struct dev_db_entry));
6938
6939         qla4xxx_setup_flash_ddb_entry(ha, ddb_entry, idx);
6940
6941         cls_conn = iscsi_conn_setup(cls_sess, sizeof(struct qla_conn), conn_id);
6942
6943         if (!cls_conn) {
6944                 ret = QLA_ERROR;
6945                 goto exit_setup;
6946         }
6947
6948         ddb_entry->conn = cls_conn;
6949
6950         /* Setup ep, for displaying attributes in sysfs */
6951         ep = qla4xxx_get_ep_fwdb(ha, fw_ddb_entry);
6952         if (ep) {
6953                 ep->conn = cls_conn;
6954                 cls_conn->ep = ep;
6955         } else {
6956                 DEBUG2(ql4_printk(KERN_ERR, ha, "Unable to get ep\n"));
6957                 ret = QLA_ERROR;
6958                 goto exit_setup;
6959         }
6960
6961         /* Update sess/conn params */
6962         qla4xxx_copy_fwddb_param(ha, fw_ddb_entry, cls_sess, cls_conn);
6963         qla4xxx_update_sess_disc_idx(ha, ddb_entry, fw_ddb_entry);
6964
6965         if (is_reset == RESET_ADAPTER) {
6966                 iscsi_block_session(cls_sess);
6967                 /* Use the relogin path to discover new devices
6968                  *  by short-circuting the logic of setting
6969                  *  timer to relogin - instead set the flags
6970                  *  to initiate login right away.
6971                  */
6972                 set_bit(DPC_RELOGIN_DEVICE, &ha->dpc_flags);
6973                 set_bit(DF_RELOGIN, &ddb_entry->flags);
6974         }
6975
6976 exit_setup:
6977         return ret;
6978 }
6979
6980 static void qla4xxx_update_fw_ddb_link(struct scsi_qla_host *ha,
6981                                        struct list_head *list_ddb,
6982                                        struct dev_db_entry *fw_ddb_entry)
6983 {
6984         struct qla_ddb_index  *ddb_idx, *ddb_idx_tmp;
6985         uint16_t ddb_link;
6986
6987         ddb_link = le16_to_cpu(fw_ddb_entry->ddb_link);
6988
6989         list_for_each_entry_safe(ddb_idx, ddb_idx_tmp, list_ddb, list) {
6990                 if (ddb_idx->fw_ddb_idx == ddb_link) {
6991                         DEBUG2(ql4_printk(KERN_INFO, ha,
6992                                           "Updating NT parent idx from [%d] to [%d]\n",
6993                                           ddb_link, ddb_idx->flash_ddb_idx));
6994                         fw_ddb_entry->ddb_link =
6995                                             cpu_to_le16(ddb_idx->flash_ddb_idx);
6996                         return;
6997                 }
6998         }
6999 }
7000
7001 static void qla4xxx_build_nt_list(struct scsi_qla_host *ha,
7002                                   struct list_head *list_nt,
7003                                   struct list_head *list_st,
7004                                   int is_reset)
7005 {
7006         struct dev_db_entry *fw_ddb_entry;
7007         struct ddb_entry *ddb_entry = NULL;
7008         dma_addr_t fw_ddb_dma;
7009         int max_ddbs;
7010         int fw_idx_size;
7011         int ret;
7012         uint32_t idx = 0, next_idx = 0;
7013         uint32_t state = 0, conn_err = 0;
7014         uint32_t ddb_idx = -1;
7015         uint16_t conn_id = 0;
7016         uint16_t ddb_link = -1;
7017         struct qla_ddb_index  *nt_ddb_idx;
7018
7019         fw_ddb_entry = dma_pool_alloc(ha->fw_ddb_dma_pool, GFP_KERNEL,
7020                                       &fw_ddb_dma);
7021         if (fw_ddb_entry == NULL) {
7022                 DEBUG2(ql4_printk(KERN_ERR, ha, "Out of memory\n"));
7023                 goto exit_nt_list;
7024         }
7025         max_ddbs =  is_qla40XX(ha) ? MAX_DEV_DB_ENTRIES_40XX :
7026                                      MAX_DEV_DB_ENTRIES;
7027         fw_idx_size = sizeof(struct qla_ddb_index);
7028
7029         for (idx = 0; idx < max_ddbs; idx = next_idx) {
7030                 ret = qla4xxx_get_fwddb_entry(ha, idx, fw_ddb_entry, fw_ddb_dma,
7031                                               NULL, &next_idx, &state,
7032                                               &conn_err, NULL, &conn_id);
7033                 if (ret == QLA_ERROR)
7034                         break;
7035
7036                 if (qla4xxx_verify_boot_idx(ha, idx) != QLA_SUCCESS)
7037                         goto continue_next_nt;
7038
7039                 /* Check if NT, then add to list it */
7040                 if (strlen((char *) fw_ddb_entry->iscsi_name) == 0)
7041                         goto continue_next_nt;
7042
7043                 ddb_link = le16_to_cpu(fw_ddb_entry->ddb_link);
7044                 if (ddb_link < max_ddbs)
7045                         qla4xxx_update_fw_ddb_link(ha, list_st, fw_ddb_entry);
7046
7047                 if (!(state == DDB_DS_NO_CONNECTION_ACTIVE ||
7048                     state == DDB_DS_SESSION_FAILED) &&
7049                     (is_reset == INIT_ADAPTER))
7050                         goto continue_next_nt;
7051
7052                 DEBUG2(ql4_printk(KERN_INFO, ha,
7053                                   "Adding  DDB to session = 0x%x\n", idx));
7054
7055                 if (is_reset == INIT_ADAPTER) {
7056                         nt_ddb_idx = vmalloc(fw_idx_size);
7057                         if (!nt_ddb_idx)
7058                                 break;
7059
7060                         nt_ddb_idx->fw_ddb_idx = idx;
7061
7062                         /* Copy original isid as it may get updated in function
7063                          * qla4xxx_update_isid(). We need original isid in
7064                          * function qla4xxx_compare_tuple_ddb to find duplicate
7065                          * target */
7066                         memcpy(&nt_ddb_idx->flash_isid[0],
7067                                &fw_ddb_entry->isid[0],
7068                                sizeof(nt_ddb_idx->flash_isid));
7069
7070                         ret = qla4xxx_is_flash_ddb_exists(ha, list_nt,
7071                                                           fw_ddb_entry);
7072                         if (ret == QLA_SUCCESS) {
7073                                 /* free nt_ddb_idx and do not add to list_nt */
7074                                 vfree(nt_ddb_idx);
7075                                 goto continue_next_nt;
7076                         }
7077
7078                         /* Copy updated isid */
7079                         memcpy(&nt_ddb_idx->fw_ddb, fw_ddb_entry,
7080                                sizeof(struct dev_db_entry));
7081
7082                         list_add_tail(&nt_ddb_idx->list, list_nt);
7083                 } else if (is_reset == RESET_ADAPTER) {
7084                         ret = qla4xxx_is_session_exists(ha, fw_ddb_entry,
7085                                                         &ddb_idx);
7086                         if (ret == QLA_SUCCESS) {
7087                                 ddb_entry = qla4xxx_lookup_ddb_by_fw_index(ha,
7088                                                                        ddb_idx);
7089                                 if (ddb_entry != NULL)
7090                                         qla4xxx_update_sess_disc_idx(ha,
7091                                                                      ddb_entry,
7092                                                                   fw_ddb_entry);
7093                                 goto continue_next_nt;
7094                         }
7095                 }
7096
7097                 ret = qla4xxx_sess_conn_setup(ha, fw_ddb_entry, is_reset, idx);
7098                 if (ret == QLA_ERROR)
7099                         goto exit_nt_list;
7100
7101 continue_next_nt:
7102                 if (next_idx == 0)
7103                         break;
7104         }
7105
7106 exit_nt_list:
7107         if (fw_ddb_entry)
7108                 dma_pool_free(ha->fw_ddb_dma_pool, fw_ddb_entry, fw_ddb_dma);
7109 }
7110
7111 static void qla4xxx_build_new_nt_list(struct scsi_qla_host *ha,
7112                                       struct list_head *list_nt,
7113                                       uint16_t target_id)
7114 {
7115         struct dev_db_entry *fw_ddb_entry;
7116         dma_addr_t fw_ddb_dma;
7117         int max_ddbs;
7118         int fw_idx_size;
7119         int ret;
7120         uint32_t idx = 0, next_idx = 0;
7121         uint32_t state = 0, conn_err = 0;
7122         uint16_t conn_id = 0;
7123         struct qla_ddb_index  *nt_ddb_idx;
7124
7125         fw_ddb_entry = dma_pool_alloc(ha->fw_ddb_dma_pool, GFP_KERNEL,
7126                                       &fw_ddb_dma);
7127         if (fw_ddb_entry == NULL) {
7128                 DEBUG2(ql4_printk(KERN_ERR, ha, "Out of memory\n"));
7129                 goto exit_new_nt_list;
7130         }
7131         max_ddbs =  is_qla40XX(ha) ? MAX_DEV_DB_ENTRIES_40XX :
7132                                      MAX_DEV_DB_ENTRIES;
7133         fw_idx_size = sizeof(struct qla_ddb_index);
7134
7135         for (idx = 0; idx < max_ddbs; idx = next_idx) {
7136                 ret = qla4xxx_get_fwddb_entry(ha, idx, fw_ddb_entry, fw_ddb_dma,
7137                                               NULL, &next_idx, &state,
7138                                               &conn_err, NULL, &conn_id);
7139                 if (ret == QLA_ERROR)
7140                         break;
7141
7142                 /* Check if NT, then add it to list */
7143                 if (strlen((char *)fw_ddb_entry->iscsi_name) == 0)
7144                         goto continue_next_new_nt;
7145
7146                 if (!(state == DDB_DS_NO_CONNECTION_ACTIVE))
7147                         goto continue_next_new_nt;
7148
7149                 DEBUG2(ql4_printk(KERN_INFO, ha,
7150                                   "Adding  DDB to session = 0x%x\n", idx));
7151
7152                 nt_ddb_idx = vmalloc(fw_idx_size);
7153                 if (!nt_ddb_idx)
7154                         break;
7155
7156                 nt_ddb_idx->fw_ddb_idx = idx;
7157
7158                 ret = qla4xxx_is_session_exists(ha, fw_ddb_entry, NULL);
7159                 if (ret == QLA_SUCCESS) {
7160                         /* free nt_ddb_idx and do not add to list_nt */
7161                         vfree(nt_ddb_idx);
7162                         goto continue_next_new_nt;
7163                 }
7164
7165                 if (target_id < max_ddbs)
7166                         fw_ddb_entry->ddb_link = cpu_to_le16(target_id);
7167
7168                 list_add_tail(&nt_ddb_idx->list, list_nt);
7169
7170                 ret = qla4xxx_sess_conn_setup(ha, fw_ddb_entry, RESET_ADAPTER,
7171                                               idx);
7172                 if (ret == QLA_ERROR)
7173                         goto exit_new_nt_list;
7174
7175 continue_next_new_nt:
7176                 if (next_idx == 0)
7177                         break;
7178         }
7179
7180 exit_new_nt_list:
7181         if (fw_ddb_entry)
7182                 dma_pool_free(ha->fw_ddb_dma_pool, fw_ddb_entry, fw_ddb_dma);
7183 }
7184
7185 /**
7186  * qla4xxx_sysfs_ddb_is_non_persistent - check for non-persistence of ddb entry
7187  * @dev: dev associated with the sysfs entry
7188  * @data: pointer to flashnode session object
7189  *
7190  * Returns:
7191  *      1: if flashnode entry is non-persistent
7192  *      0: if flashnode entry is persistent
7193  **/
7194 static int qla4xxx_sysfs_ddb_is_non_persistent(struct device *dev, void *data)
7195 {
7196         struct iscsi_bus_flash_session *fnode_sess;
7197
7198         if (!iscsi_flashnode_bus_match(dev, NULL))
7199                 return 0;
7200
7201         fnode_sess = iscsi_dev_to_flash_session(dev);
7202
7203         return (fnode_sess->flash_state == DEV_DB_NON_PERSISTENT);
7204 }
7205
7206 /**
7207  * qla4xxx_sysfs_ddb_tgt_create - Create sysfs entry for target
7208  * @ha: pointer to host
7209  * @fw_ddb_entry: flash ddb data
7210  * @idx: target index
7211  * @user: if set then this call is made from userland else from kernel
7212  *
7213  * Returns:
7214  * On sucess: QLA_SUCCESS
7215  * On failure: QLA_ERROR
7216  *
7217  * This create separate sysfs entries for session and connection attributes of
7218  * the given fw ddb entry.
7219  * If this is invoked as a result of a userspace call then the entry is marked
7220  * as nonpersistent using flash_state field.
7221  **/
7222 static int qla4xxx_sysfs_ddb_tgt_create(struct scsi_qla_host *ha,
7223                                         struct dev_db_entry *fw_ddb_entry,
7224                                         uint16_t *idx, int user)
7225 {
7226         struct iscsi_bus_flash_session *fnode_sess = NULL;
7227         struct iscsi_bus_flash_conn *fnode_conn = NULL;
7228         int rc = QLA_ERROR;
7229
7230         fnode_sess = iscsi_create_flashnode_sess(ha->host, *idx,
7231                                                  &qla4xxx_iscsi_transport, 0);
7232         if (!fnode_sess) {
7233                 ql4_printk(KERN_ERR, ha,
7234                            "%s: Unable to create session sysfs entry for flashnode %d of host%lu\n",
7235                            __func__, *idx, ha->host_no);
7236                 goto exit_tgt_create;
7237         }
7238
7239         fnode_conn = iscsi_create_flashnode_conn(ha->host, fnode_sess,
7240                                                  &qla4xxx_iscsi_transport, 0);
7241         if (!fnode_conn) {
7242                 ql4_printk(KERN_ERR, ha,
7243                            "%s: Unable to create conn sysfs entry for flashnode %d of host%lu\n",
7244                            __func__, *idx, ha->host_no);
7245                 goto free_sess;
7246         }
7247
7248         if (user) {
7249                 fnode_sess->flash_state = DEV_DB_NON_PERSISTENT;
7250         } else {
7251                 fnode_sess->flash_state = DEV_DB_PERSISTENT;
7252
7253                 if (*idx == ha->pri_ddb_idx || *idx == ha->sec_ddb_idx)
7254                         fnode_sess->is_boot_target = 1;
7255                 else
7256                         fnode_sess->is_boot_target = 0;
7257         }
7258
7259         rc = qla4xxx_copy_from_fwddb_param(fnode_sess, fnode_conn,
7260                                            fw_ddb_entry);
7261         if (rc)
7262                 goto free_sess;
7263
7264         ql4_printk(KERN_INFO, ha, "%s: sysfs entry %s created\n",
7265                    __func__, fnode_sess->dev.kobj.name);
7266
7267         ql4_printk(KERN_INFO, ha, "%s: sysfs entry %s created\n",
7268                    __func__, fnode_conn->dev.kobj.name);
7269
7270         return QLA_SUCCESS;
7271
7272 free_sess:
7273         iscsi_destroy_flashnode_sess(fnode_sess);
7274
7275 exit_tgt_create:
7276         return QLA_ERROR;
7277 }
7278
7279 /**
7280  * qla4xxx_sysfs_ddb_add - Add new ddb entry in flash
7281  * @shost: pointer to host
7282  * @buf: type of ddb entry (ipv4/ipv6)
7283  * @len: length of buf
7284  *
7285  * This creates new ddb entry in the flash by finding first free index and
7286  * storing default ddb there. And then create sysfs entry for the new ddb entry.
7287  **/
7288 static int qla4xxx_sysfs_ddb_add(struct Scsi_Host *shost, const char *buf,
7289                                  int len)
7290 {
7291         struct scsi_qla_host *ha = to_qla_host(shost);
7292         struct dev_db_entry *fw_ddb_entry = NULL;
7293         dma_addr_t fw_ddb_entry_dma;
7294         struct device *dev;
7295         uint16_t idx = 0;
7296         uint16_t max_ddbs = 0;
7297         uint32_t options = 0;
7298         uint32_t rval = QLA_ERROR;
7299
7300         if (strncasecmp(PORTAL_TYPE_IPV4, buf, 4) &&
7301             strncasecmp(PORTAL_TYPE_IPV6, buf, 4)) {
7302                 DEBUG2(ql4_printk(KERN_ERR, ha, "%s: Invalid portal type\n",
7303                                   __func__));
7304                 goto exit_ddb_add;
7305         }
7306
7307         max_ddbs =  is_qla40XX(ha) ? MAX_PRST_DEV_DB_ENTRIES :
7308                                      MAX_DEV_DB_ENTRIES;
7309
7310         fw_ddb_entry = dma_alloc_coherent(&ha->pdev->dev, sizeof(*fw_ddb_entry),
7311                                           &fw_ddb_entry_dma, GFP_KERNEL);
7312         if (!fw_ddb_entry) {
7313                 DEBUG2(ql4_printk(KERN_ERR, ha,
7314                                   "%s: Unable to allocate dma buffer\n",
7315                                   __func__));
7316                 goto exit_ddb_add;
7317         }
7318
7319         dev = iscsi_find_flashnode_sess(ha->host, NULL,
7320                                         qla4xxx_sysfs_ddb_is_non_persistent);
7321         if (dev) {
7322                 ql4_printk(KERN_ERR, ha,
7323                            "%s: A non-persistent entry %s found\n",
7324                            __func__, dev->kobj.name);
7325                 put_device(dev);
7326                 goto exit_ddb_add;
7327         }
7328
7329         /* Index 0 and 1 are reserved for boot target entries */
7330         for (idx = 2; idx < max_ddbs; idx++) {
7331                 if (qla4xxx_flashdb_by_index(ha, fw_ddb_entry,
7332                                              fw_ddb_entry_dma, idx))
7333                         break;
7334         }
7335
7336         if (idx == max_ddbs)
7337                 goto exit_ddb_add;
7338
7339         if (!strncasecmp("ipv6", buf, 4))
7340                 options |= IPV6_DEFAULT_DDB_ENTRY;
7341
7342         rval = qla4xxx_get_default_ddb(ha, options, fw_ddb_entry_dma);
7343         if (rval == QLA_ERROR)
7344                 goto exit_ddb_add;
7345
7346         rval = qla4xxx_sysfs_ddb_tgt_create(ha, fw_ddb_entry, &idx, 1);
7347
7348 exit_ddb_add:
7349         if (fw_ddb_entry)
7350                 dma_free_coherent(&ha->pdev->dev, sizeof(*fw_ddb_entry),
7351                                   fw_ddb_entry, fw_ddb_entry_dma);
7352         if (rval == QLA_SUCCESS)
7353                 return idx;
7354         else
7355                 return -EIO;
7356 }
7357
7358 /**
7359  * qla4xxx_sysfs_ddb_apply - write the target ddb contents to Flash
7360  * @fnode_sess: pointer to session attrs of flash ddb entry
7361  * @fnode_conn: pointer to connection attrs of flash ddb entry
7362  *
7363  * This writes the contents of target ddb buffer to Flash with a valid cookie
7364  * value in order to make the ddb entry persistent.
7365  **/
7366 static int  qla4xxx_sysfs_ddb_apply(struct iscsi_bus_flash_session *fnode_sess,
7367                                     struct iscsi_bus_flash_conn *fnode_conn)
7368 {
7369         struct Scsi_Host *shost = iscsi_flash_session_to_shost(fnode_sess);
7370         struct scsi_qla_host *ha = to_qla_host(shost);
7371         uint32_t dev_db_start_offset = FLASH_OFFSET_DB_INFO;
7372         struct dev_db_entry *fw_ddb_entry = NULL;
7373         dma_addr_t fw_ddb_entry_dma;
7374         uint32_t options = 0;
7375         int rval = 0;
7376
7377         fw_ddb_entry = dma_alloc_coherent(&ha->pdev->dev, sizeof(*fw_ddb_entry),
7378                                           &fw_ddb_entry_dma, GFP_KERNEL);
7379         if (!fw_ddb_entry) {
7380                 DEBUG2(ql4_printk(KERN_ERR, ha,
7381                                   "%s: Unable to allocate dma buffer\n",
7382                                   __func__));
7383                 rval = -ENOMEM;
7384                 goto exit_ddb_apply;
7385         }
7386
7387         if (!strncasecmp(fnode_sess->portal_type, PORTAL_TYPE_IPV6, 4))
7388                 options |= IPV6_DEFAULT_DDB_ENTRY;
7389
7390         rval = qla4xxx_get_default_ddb(ha, options, fw_ddb_entry_dma);
7391         if (rval == QLA_ERROR)
7392                 goto exit_ddb_apply;
7393
7394         dev_db_start_offset += (fnode_sess->target_id *
7395                                 sizeof(*fw_ddb_entry));
7396
7397         qla4xxx_copy_to_fwddb_param(fnode_sess, fnode_conn, fw_ddb_entry);
7398         fw_ddb_entry->cookie = DDB_VALID_COOKIE;
7399
7400         rval = qla4xxx_set_flash(ha, fw_ddb_entry_dma, dev_db_start_offset,
7401                                  sizeof(*fw_ddb_entry), FLASH_OPT_RMW_COMMIT);
7402
7403         if (rval == QLA_SUCCESS) {
7404                 fnode_sess->flash_state = DEV_DB_PERSISTENT;
7405                 ql4_printk(KERN_INFO, ha,
7406                            "%s: flash node %u of host %lu written to flash\n",
7407                            __func__, fnode_sess->target_id, ha->host_no);
7408         } else {
7409                 rval = -EIO;
7410                 ql4_printk(KERN_ERR, ha,
7411                            "%s: Error while writing flash node %u of host %lu to flash\n",
7412                            __func__, fnode_sess->target_id, ha->host_no);
7413         }
7414
7415 exit_ddb_apply:
7416         if (fw_ddb_entry)
7417                 dma_free_coherent(&ha->pdev->dev, sizeof(*fw_ddb_entry),
7418                                   fw_ddb_entry, fw_ddb_entry_dma);
7419         return rval;
7420 }
7421
7422 static ssize_t qla4xxx_sysfs_ddb_conn_open(struct scsi_qla_host *ha,
7423                                            struct dev_db_entry *fw_ddb_entry,
7424                                            uint16_t idx)
7425 {
7426         struct dev_db_entry *ddb_entry = NULL;
7427         dma_addr_t ddb_entry_dma;
7428         unsigned long wtime;
7429         uint32_t mbx_sts = 0;
7430         uint32_t state = 0, conn_err = 0;
7431         uint16_t tmo = 0;
7432         int ret = 0;
7433
7434         ddb_entry = dma_alloc_coherent(&ha->pdev->dev, sizeof(*ddb_entry),
7435                                        &ddb_entry_dma, GFP_KERNEL);
7436         if (!ddb_entry) {
7437                 DEBUG2(ql4_printk(KERN_ERR, ha,
7438                                   "%s: Unable to allocate dma buffer\n",
7439                                   __func__));
7440                 return QLA_ERROR;
7441         }
7442
7443         memcpy(ddb_entry, fw_ddb_entry, sizeof(*ddb_entry));
7444
7445         ret = qla4xxx_set_ddb_entry(ha, idx, ddb_entry_dma, &mbx_sts);
7446         if (ret != QLA_SUCCESS) {
7447                 DEBUG2(ql4_printk(KERN_ERR, ha,
7448                                   "%s: Unable to set ddb entry for index %d\n",
7449                                   __func__, idx));
7450                 goto exit_ddb_conn_open;
7451         }
7452
7453         qla4xxx_conn_open(ha, idx);
7454
7455         /* To ensure that sendtargets is done, wait for at least 12 secs */
7456         tmo = ((ha->def_timeout > LOGIN_TOV) &&
7457                (ha->def_timeout < LOGIN_TOV * 10) ?
7458                ha->def_timeout : LOGIN_TOV);
7459
7460         DEBUG2(ql4_printk(KERN_INFO, ha,
7461                           "Default time to wait for login to ddb %d\n", tmo));
7462
7463         wtime = jiffies + (HZ * tmo);
7464         do {
7465                 ret = qla4xxx_get_fwddb_entry(ha, idx, NULL, 0, NULL,
7466                                               NULL, &state, &conn_err, NULL,
7467                                               NULL);
7468                 if (ret == QLA_ERROR)
7469                         continue;
7470
7471                 if (state == DDB_DS_NO_CONNECTION_ACTIVE ||
7472                     state == DDB_DS_SESSION_FAILED)
7473                         break;
7474
7475                 schedule_timeout_uninterruptible(HZ / 10);
7476         } while (time_after(wtime, jiffies));
7477
7478 exit_ddb_conn_open:
7479         if (ddb_entry)
7480                 dma_free_coherent(&ha->pdev->dev, sizeof(*ddb_entry),
7481                                   ddb_entry, ddb_entry_dma);
7482         return ret;
7483 }
7484
7485 static int qla4xxx_ddb_login_st(struct scsi_qla_host *ha,
7486                                 struct dev_db_entry *fw_ddb_entry,
7487                                 uint16_t target_id)
7488 {
7489         struct qla_ddb_index *ddb_idx, *ddb_idx_tmp;
7490         struct list_head list_nt;
7491         uint16_t ddb_index;
7492         int ret = 0;
7493
7494         if (test_bit(AF_ST_DISCOVERY_IN_PROGRESS, &ha->flags)) {
7495                 ql4_printk(KERN_WARNING, ha,
7496                            "%s: A discovery already in progress!\n", __func__);
7497                 return QLA_ERROR;
7498         }
7499
7500         INIT_LIST_HEAD(&list_nt);
7501
7502         set_bit(AF_ST_DISCOVERY_IN_PROGRESS, &ha->flags);
7503
7504         ret = qla4xxx_get_ddb_index(ha, &ddb_index);
7505         if (ret == QLA_ERROR)
7506                 goto exit_login_st_clr_bit;
7507
7508         ret = qla4xxx_sysfs_ddb_conn_open(ha, fw_ddb_entry, ddb_index);
7509         if (ret == QLA_ERROR)
7510                 goto exit_login_st;
7511
7512         qla4xxx_build_new_nt_list(ha, &list_nt, target_id);
7513
7514         list_for_each_entry_safe(ddb_idx, ddb_idx_tmp, &list_nt, list) {
7515                 list_del_init(&ddb_idx->list);
7516                 qla4xxx_clear_ddb_entry(ha, ddb_idx->fw_ddb_idx);
7517                 vfree(ddb_idx);
7518         }
7519
7520 exit_login_st:
7521         if (qla4xxx_clear_ddb_entry(ha, ddb_index) == QLA_ERROR) {
7522                 ql4_printk(KERN_ERR, ha,
7523                            "Unable to clear DDB index = 0x%x\n", ddb_index);
7524         }
7525
7526         clear_bit(ddb_index, ha->ddb_idx_map);
7527
7528 exit_login_st_clr_bit:
7529         clear_bit(AF_ST_DISCOVERY_IN_PROGRESS, &ha->flags);
7530         return ret;
7531 }
7532
7533 static int qla4xxx_ddb_login_nt(struct scsi_qla_host *ha,
7534                                 struct dev_db_entry *fw_ddb_entry,
7535                                 uint16_t idx)
7536 {
7537         int ret = QLA_ERROR;
7538
7539         ret = qla4xxx_is_session_exists(ha, fw_ddb_entry, NULL);
7540         if (ret != QLA_SUCCESS)
7541                 ret = qla4xxx_sess_conn_setup(ha, fw_ddb_entry, RESET_ADAPTER,
7542                                               idx);
7543         else
7544                 ret = -EPERM;
7545
7546         return ret;
7547 }
7548
7549 /**
7550  * qla4xxx_sysfs_ddb_login - Login to the specified target
7551  * @fnode_sess: pointer to session attrs of flash ddb entry
7552  * @fnode_conn: pointer to connection attrs of flash ddb entry
7553  *
7554  * This logs in to the specified target
7555  **/
7556 static int qla4xxx_sysfs_ddb_login(struct iscsi_bus_flash_session *fnode_sess,
7557                                    struct iscsi_bus_flash_conn *fnode_conn)
7558 {
7559         struct Scsi_Host *shost = iscsi_flash_session_to_shost(fnode_sess);
7560         struct scsi_qla_host *ha = to_qla_host(shost);
7561         struct dev_db_entry *fw_ddb_entry = NULL;
7562         dma_addr_t fw_ddb_entry_dma;
7563         uint32_t options = 0;
7564         int ret = 0;
7565
7566         if (fnode_sess->flash_state == DEV_DB_NON_PERSISTENT) {
7567                 ql4_printk(KERN_ERR, ha,
7568                            "%s: Target info is not persistent\n", __func__);
7569                 ret = -EIO;
7570                 goto exit_ddb_login;
7571         }
7572
7573         fw_ddb_entry = dma_alloc_coherent(&ha->pdev->dev, sizeof(*fw_ddb_entry),
7574                                           &fw_ddb_entry_dma, GFP_KERNEL);
7575         if (!fw_ddb_entry) {
7576                 DEBUG2(ql4_printk(KERN_ERR, ha,
7577                                   "%s: Unable to allocate dma buffer\n",
7578                                   __func__));
7579                 ret = -ENOMEM;
7580                 goto exit_ddb_login;
7581         }
7582
7583         if (!strncasecmp(fnode_sess->portal_type, PORTAL_TYPE_IPV6, 4))
7584                 options |= IPV6_DEFAULT_DDB_ENTRY;
7585
7586         ret = qla4xxx_get_default_ddb(ha, options, fw_ddb_entry_dma);
7587         if (ret == QLA_ERROR)
7588                 goto exit_ddb_login;
7589
7590         qla4xxx_copy_to_fwddb_param(fnode_sess, fnode_conn, fw_ddb_entry);
7591         fw_ddb_entry->cookie = DDB_VALID_COOKIE;
7592
7593         if (strlen((char *)fw_ddb_entry->iscsi_name) == 0)
7594                 ret = qla4xxx_ddb_login_st(ha, fw_ddb_entry,
7595                                            fnode_sess->target_id);
7596         else
7597                 ret = qla4xxx_ddb_login_nt(ha, fw_ddb_entry,
7598                                            fnode_sess->target_id);
7599
7600         if (ret > 0)
7601                 ret = -EIO;
7602
7603 exit_ddb_login:
7604         if (fw_ddb_entry)
7605                 dma_free_coherent(&ha->pdev->dev, sizeof(*fw_ddb_entry),
7606                                   fw_ddb_entry, fw_ddb_entry_dma);
7607         return ret;
7608 }
7609
7610 /**
7611  * qla4xxx_sysfs_ddb_logout_sid - Logout session for the specified target
7612  * @cls_sess: pointer to session to be logged out
7613  *
7614  * This performs session log out from the specified target
7615  **/
7616 static int qla4xxx_sysfs_ddb_logout_sid(struct iscsi_cls_session *cls_sess)
7617 {
7618         struct iscsi_session *sess;
7619         struct ddb_entry *ddb_entry = NULL;
7620         struct scsi_qla_host *ha;
7621         struct dev_db_entry *fw_ddb_entry = NULL;
7622         dma_addr_t fw_ddb_entry_dma;
7623         unsigned long flags;
7624         unsigned long wtime;
7625         uint32_t ddb_state;
7626         int options;
7627         int ret = 0;
7628
7629         sess = cls_sess->dd_data;
7630         ddb_entry = sess->dd_data;
7631         ha = ddb_entry->ha;
7632
7633         if (ddb_entry->ddb_type != FLASH_DDB) {
7634                 ql4_printk(KERN_ERR, ha, "%s: Not a flash node session\n",
7635                            __func__);
7636                 ret = -ENXIO;
7637                 goto exit_ddb_logout;
7638         }
7639
7640         if (test_bit(DF_BOOT_TGT, &ddb_entry->flags)) {
7641                 ql4_printk(KERN_ERR, ha,
7642                            "%s: Logout from boot target entry is not permitted.\n",
7643                            __func__);
7644                 ret = -EPERM;
7645                 goto exit_ddb_logout;
7646         }
7647
7648         fw_ddb_entry = dma_alloc_coherent(&ha->pdev->dev, sizeof(*fw_ddb_entry),
7649                                           &fw_ddb_entry_dma, GFP_KERNEL);
7650         if (!fw_ddb_entry) {
7651                 ql4_printk(KERN_ERR, ha,
7652                            "%s: Unable to allocate dma buffer\n", __func__);
7653                 ret = -ENOMEM;
7654                 goto exit_ddb_logout;
7655         }
7656
7657         if (test_and_set_bit(DF_DISABLE_RELOGIN, &ddb_entry->flags))
7658                 goto ddb_logout_init;
7659
7660         ret = qla4xxx_get_fwddb_entry(ha, ddb_entry->fw_ddb_index,
7661                                       fw_ddb_entry, fw_ddb_entry_dma,
7662                                       NULL, NULL, &ddb_state, NULL,
7663                                       NULL, NULL);
7664         if (ret == QLA_ERROR)
7665                 goto ddb_logout_init;
7666
7667         if (ddb_state == DDB_DS_SESSION_ACTIVE)
7668                 goto ddb_logout_init;
7669
7670         /* wait until next relogin is triggered using DF_RELOGIN and
7671          * clear DF_RELOGIN to avoid invocation of further relogin
7672          */
7673         wtime = jiffies + (HZ * RELOGIN_TOV);
7674         do {
7675                 if (test_and_clear_bit(DF_RELOGIN, &ddb_entry->flags))
7676                         goto ddb_logout_init;
7677
7678                 schedule_timeout_uninterruptible(HZ);
7679         } while ((time_after(wtime, jiffies)));
7680
7681 ddb_logout_init:
7682         atomic_set(&ddb_entry->retry_relogin_timer, INVALID_ENTRY);
7683         atomic_set(&ddb_entry->relogin_timer, 0);
7684
7685         options = LOGOUT_OPTION_CLOSE_SESSION;
7686         qla4xxx_session_logout_ddb(ha, ddb_entry, options);
7687
7688         memset(fw_ddb_entry, 0, sizeof(*fw_ddb_entry));
7689         wtime = jiffies + (HZ * LOGOUT_TOV);
7690         do {
7691                 ret = qla4xxx_get_fwddb_entry(ha, ddb_entry->fw_ddb_index,
7692                                               fw_ddb_entry, fw_ddb_entry_dma,
7693                                               NULL, NULL, &ddb_state, NULL,
7694                                               NULL, NULL);
7695                 if (ret == QLA_ERROR)
7696                         goto ddb_logout_clr_sess;
7697
7698                 if ((ddb_state == DDB_DS_NO_CONNECTION_ACTIVE) ||
7699                     (ddb_state == DDB_DS_SESSION_FAILED))
7700                         goto ddb_logout_clr_sess;
7701
7702                 schedule_timeout_uninterruptible(HZ);
7703         } while ((time_after(wtime, jiffies)));
7704
7705 ddb_logout_clr_sess:
7706         qla4xxx_clear_ddb_entry(ha, ddb_entry->fw_ddb_index);
7707         /*
7708          * we have decremented the reference count of the driver
7709          * when we setup the session to have the driver unload
7710          * to be seamless without actually destroying the
7711          * session
7712          **/
7713         try_module_get(qla4xxx_iscsi_transport.owner);
7714         iscsi_destroy_endpoint(ddb_entry->conn->ep);
7715
7716         spin_lock_irqsave(&ha->hardware_lock, flags);
7717         qla4xxx_free_ddb(ha, ddb_entry);
7718         clear_bit(ddb_entry->fw_ddb_index, ha->ddb_idx_map);
7719         spin_unlock_irqrestore(&ha->hardware_lock, flags);
7720
7721         iscsi_session_teardown(ddb_entry->sess);
7722
7723         clear_bit(DF_DISABLE_RELOGIN, &ddb_entry->flags);
7724         ret = QLA_SUCCESS;
7725
7726 exit_ddb_logout:
7727         if (fw_ddb_entry)
7728                 dma_free_coherent(&ha->pdev->dev, sizeof(*fw_ddb_entry),
7729                                   fw_ddb_entry, fw_ddb_entry_dma);
7730         return ret;
7731 }
7732
7733 /**
7734  * qla4xxx_sysfs_ddb_logout - Logout from the specified target
7735  * @fnode_sess: pointer to session attrs of flash ddb entry
7736  * @fnode_conn: pointer to connection attrs of flash ddb entry
7737  *
7738  * This performs log out from the specified target
7739  **/
7740 static int qla4xxx_sysfs_ddb_logout(struct iscsi_bus_flash_session *fnode_sess,
7741                                     struct iscsi_bus_flash_conn *fnode_conn)
7742 {
7743         struct Scsi_Host *shost = iscsi_flash_session_to_shost(fnode_sess);
7744         struct scsi_qla_host *ha = to_qla_host(shost);
7745         struct ql4_tuple_ddb *flash_tddb = NULL;
7746         struct ql4_tuple_ddb *tmp_tddb = NULL;
7747         struct dev_db_entry *fw_ddb_entry = NULL;
7748         struct ddb_entry *ddb_entry = NULL;
7749         dma_addr_t fw_ddb_dma;
7750         uint32_t next_idx = 0;
7751         uint32_t state = 0, conn_err = 0;
7752         uint16_t conn_id = 0;
7753         int idx, index;
7754         int status, ret = 0;
7755
7756         fw_ddb_entry = dma_pool_alloc(ha->fw_ddb_dma_pool, GFP_KERNEL,
7757                                       &fw_ddb_dma);
7758         if (fw_ddb_entry == NULL) {
7759                 ql4_printk(KERN_ERR, ha, "%s:Out of memory\n", __func__);
7760                 ret = -ENOMEM;
7761                 goto exit_ddb_logout;
7762         }
7763
7764         flash_tddb = vzalloc(sizeof(*flash_tddb));
7765         if (!flash_tddb) {
7766                 ql4_printk(KERN_WARNING, ha,
7767                            "%s:Memory Allocation failed.\n", __func__);
7768                 ret = -ENOMEM;
7769                 goto exit_ddb_logout;
7770         }
7771
7772         tmp_tddb = vzalloc(sizeof(*tmp_tddb));
7773         if (!tmp_tddb) {
7774                 ql4_printk(KERN_WARNING, ha,
7775                            "%s:Memory Allocation failed.\n", __func__);
7776                 ret = -ENOMEM;
7777                 goto exit_ddb_logout;
7778         }
7779
7780         if (!fnode_sess->targetname) {
7781                 ql4_printk(KERN_ERR, ha,
7782                            "%s:Cannot logout from SendTarget entry\n",
7783                            __func__);
7784                 ret = -EPERM;
7785                 goto exit_ddb_logout;
7786         }
7787
7788         if (fnode_sess->is_boot_target) {
7789                 ql4_printk(KERN_ERR, ha,
7790                            "%s: Logout from boot target entry is not permitted.\n",
7791                            __func__);
7792                 ret = -EPERM;
7793                 goto exit_ddb_logout;
7794         }
7795
7796         strlcpy(flash_tddb->iscsi_name, fnode_sess->targetname,
7797                 ISCSI_NAME_SIZE);
7798
7799         if (!strncmp(fnode_sess->portal_type, PORTAL_TYPE_IPV6, 4))
7800                 sprintf(flash_tddb->ip_addr, "%pI6", fnode_conn->ipaddress);
7801         else
7802                 sprintf(flash_tddb->ip_addr, "%pI4", fnode_conn->ipaddress);
7803
7804         flash_tddb->tpgt = fnode_sess->tpgt;
7805         flash_tddb->port = fnode_conn->port;
7806
7807         COPY_ISID(flash_tddb->isid, fnode_sess->isid);
7808
7809         for (idx = 0; idx < MAX_DDB_ENTRIES; idx++) {
7810                 ddb_entry = qla4xxx_lookup_ddb_by_fw_index(ha, idx);
7811                 if (ddb_entry == NULL)
7812                         continue;
7813
7814                 if (ddb_entry->ddb_type != FLASH_DDB)
7815                         continue;
7816
7817                 index = ddb_entry->sess->target_id;
7818                 status = qla4xxx_get_fwddb_entry(ha, index, fw_ddb_entry,
7819                                                  fw_ddb_dma, NULL, &next_idx,
7820                                                  &state, &conn_err, NULL,
7821                                                  &conn_id);
7822                 if (status == QLA_ERROR) {
7823                         ret = -ENOMEM;
7824                         break;
7825                 }
7826
7827                 qla4xxx_convert_param_ddb(fw_ddb_entry, tmp_tddb, NULL);
7828
7829                 status = qla4xxx_compare_tuple_ddb(ha, flash_tddb, tmp_tddb,
7830                                                    true);
7831                 if (status == QLA_SUCCESS) {
7832                         ret = qla4xxx_sysfs_ddb_logout_sid(ddb_entry->sess);
7833                         break;
7834                 }
7835         }
7836
7837         if (idx == MAX_DDB_ENTRIES)
7838                 ret = -ESRCH;
7839
7840 exit_ddb_logout:
7841         if (flash_tddb)
7842                 vfree(flash_tddb);
7843         if (tmp_tddb)
7844                 vfree(tmp_tddb);
7845         if (fw_ddb_entry)
7846                 dma_pool_free(ha->fw_ddb_dma_pool, fw_ddb_entry, fw_ddb_dma);
7847
7848         return ret;
7849 }
7850
7851 static int
7852 qla4xxx_sysfs_ddb_get_param(struct iscsi_bus_flash_session *fnode_sess,
7853                             int param, char *buf)
7854 {
7855         struct Scsi_Host *shost = iscsi_flash_session_to_shost(fnode_sess);
7856         struct scsi_qla_host *ha = to_qla_host(shost);
7857         struct iscsi_bus_flash_conn *fnode_conn;
7858         struct ql4_chap_table chap_tbl;
7859         struct device *dev;
7860         int parent_type;
7861         int rc = 0;
7862
7863         dev = iscsi_find_flashnode_conn(fnode_sess);
7864         if (!dev)
7865                 return -EIO;
7866
7867         fnode_conn = iscsi_dev_to_flash_conn(dev);
7868
7869         switch (param) {
7870         case ISCSI_FLASHNODE_IS_FW_ASSIGNED_IPV6:
7871                 rc = sprintf(buf, "%u\n", fnode_conn->is_fw_assigned_ipv6);
7872                 break;
7873         case ISCSI_FLASHNODE_PORTAL_TYPE:
7874                 rc = sprintf(buf, "%s\n", fnode_sess->portal_type);
7875                 break;
7876         case ISCSI_FLASHNODE_AUTO_SND_TGT_DISABLE:
7877                 rc = sprintf(buf, "%u\n", fnode_sess->auto_snd_tgt_disable);
7878                 break;
7879         case ISCSI_FLASHNODE_DISCOVERY_SESS:
7880                 rc = sprintf(buf, "%u\n", fnode_sess->discovery_sess);
7881                 break;
7882         case ISCSI_FLASHNODE_ENTRY_EN:
7883                 rc = sprintf(buf, "%u\n", fnode_sess->entry_state);
7884                 break;
7885         case ISCSI_FLASHNODE_HDR_DGST_EN:
7886                 rc = sprintf(buf, "%u\n", fnode_conn->hdrdgst_en);
7887                 break;
7888         case ISCSI_FLASHNODE_DATA_DGST_EN:
7889                 rc = sprintf(buf, "%u\n", fnode_conn->datadgst_en);
7890                 break;
7891         case ISCSI_FLASHNODE_IMM_DATA_EN:
7892                 rc = sprintf(buf, "%u\n", fnode_sess->imm_data_en);
7893                 break;
7894         case ISCSI_FLASHNODE_INITIAL_R2T_EN:
7895                 rc = sprintf(buf, "%u\n", fnode_sess->initial_r2t_en);
7896                 break;
7897         case ISCSI_FLASHNODE_DATASEQ_INORDER:
7898                 rc = sprintf(buf, "%u\n", fnode_sess->dataseq_inorder_en);
7899                 break;
7900         case ISCSI_FLASHNODE_PDU_INORDER:
7901                 rc = sprintf(buf, "%u\n", fnode_sess->pdu_inorder_en);
7902                 break;
7903         case ISCSI_FLASHNODE_CHAP_AUTH_EN:
7904                 rc = sprintf(buf, "%u\n", fnode_sess->chap_auth_en);
7905                 break;
7906         case ISCSI_FLASHNODE_SNACK_REQ_EN:
7907                 rc = sprintf(buf, "%u\n", fnode_conn->snack_req_en);
7908                 break;
7909         case ISCSI_FLASHNODE_DISCOVERY_LOGOUT_EN:
7910                 rc = sprintf(buf, "%u\n", fnode_sess->discovery_logout_en);
7911                 break;
7912         case ISCSI_FLASHNODE_BIDI_CHAP_EN:
7913                 rc = sprintf(buf, "%u\n", fnode_sess->bidi_chap_en);
7914                 break;
7915         case ISCSI_FLASHNODE_DISCOVERY_AUTH_OPTIONAL:
7916                 rc = sprintf(buf, "%u\n", fnode_sess->discovery_auth_optional);
7917                 break;
7918         case ISCSI_FLASHNODE_ERL:
7919                 rc = sprintf(buf, "%u\n", fnode_sess->erl);
7920                 break;
7921         case ISCSI_FLASHNODE_TCP_TIMESTAMP_STAT:
7922                 rc = sprintf(buf, "%u\n", fnode_conn->tcp_timestamp_stat);
7923                 break;
7924         case ISCSI_FLASHNODE_TCP_NAGLE_DISABLE:
7925                 rc = sprintf(buf, "%u\n", fnode_conn->tcp_nagle_disable);
7926                 break;
7927         case ISCSI_FLASHNODE_TCP_WSF_DISABLE:
7928                 rc = sprintf(buf, "%u\n", fnode_conn->tcp_wsf_disable);
7929                 break;
7930         case ISCSI_FLASHNODE_TCP_TIMER_SCALE:
7931                 rc = sprintf(buf, "%u\n", fnode_conn->tcp_timer_scale);
7932                 break;
7933         case ISCSI_FLASHNODE_TCP_TIMESTAMP_EN:
7934                 rc = sprintf(buf, "%u\n", fnode_conn->tcp_timestamp_en);
7935                 break;
7936         case ISCSI_FLASHNODE_IP_FRAG_DISABLE:
7937                 rc = sprintf(buf, "%u\n", fnode_conn->fragment_disable);
7938                 break;
7939         case ISCSI_FLASHNODE_MAX_RECV_DLENGTH:
7940                 rc = sprintf(buf, "%u\n", fnode_conn->max_recv_dlength);
7941                 break;
7942         case ISCSI_FLASHNODE_MAX_XMIT_DLENGTH:
7943                 rc = sprintf(buf, "%u\n", fnode_conn->max_xmit_dlength);
7944                 break;
7945         case ISCSI_FLASHNODE_FIRST_BURST:
7946                 rc = sprintf(buf, "%u\n", fnode_sess->first_burst);
7947                 break;
7948         case ISCSI_FLASHNODE_DEF_TIME2WAIT:
7949                 rc = sprintf(buf, "%u\n", fnode_sess->time2wait);
7950                 break;
7951         case ISCSI_FLASHNODE_DEF_TIME2RETAIN:
7952                 rc = sprintf(buf, "%u\n", fnode_sess->time2retain);
7953                 break;
7954         case ISCSI_FLASHNODE_MAX_R2T:
7955                 rc = sprintf(buf, "%u\n", fnode_sess->max_r2t);
7956                 break;
7957         case ISCSI_FLASHNODE_KEEPALIVE_TMO:
7958                 rc = sprintf(buf, "%u\n", fnode_conn->keepalive_timeout);
7959                 break;
7960         case ISCSI_FLASHNODE_ISID:
7961                 rc = sprintf(buf, "%pm\n", fnode_sess->isid);
7962                 break;
7963         case ISCSI_FLASHNODE_TSID:
7964                 rc = sprintf(buf, "%u\n", fnode_sess->tsid);
7965                 break;
7966         case ISCSI_FLASHNODE_PORT:
7967                 rc = sprintf(buf, "%d\n", fnode_conn->port);
7968                 break;
7969         case ISCSI_FLASHNODE_MAX_BURST:
7970                 rc = sprintf(buf, "%u\n", fnode_sess->max_burst);
7971                 break;
7972         case ISCSI_FLASHNODE_DEF_TASKMGMT_TMO:
7973                 rc = sprintf(buf, "%u\n",
7974                              fnode_sess->default_taskmgmt_timeout);
7975                 break;
7976         case ISCSI_FLASHNODE_IPADDR:
7977                 if (!strncmp(fnode_sess->portal_type, PORTAL_TYPE_IPV6, 4))
7978                         rc = sprintf(buf, "%pI6\n", fnode_conn->ipaddress);
7979                 else
7980                         rc = sprintf(buf, "%pI4\n", fnode_conn->ipaddress);
7981                 break;
7982         case ISCSI_FLASHNODE_ALIAS:
7983                 if (fnode_sess->targetalias)
7984                         rc = sprintf(buf, "%s\n", fnode_sess->targetalias);
7985                 else
7986                         rc = sprintf(buf, "\n");
7987                 break;
7988         case ISCSI_FLASHNODE_REDIRECT_IPADDR:
7989                 if (!strncmp(fnode_sess->portal_type, PORTAL_TYPE_IPV6, 4))
7990                         rc = sprintf(buf, "%pI6\n",
7991                                      fnode_conn->redirect_ipaddr);
7992                 else
7993                         rc = sprintf(buf, "%pI4\n",
7994                                      fnode_conn->redirect_ipaddr);
7995                 break;
7996         case ISCSI_FLASHNODE_MAX_SEGMENT_SIZE:
7997                 rc = sprintf(buf, "%u\n", fnode_conn->max_segment_size);
7998                 break;
7999         case ISCSI_FLASHNODE_LOCAL_PORT:
8000                 rc = sprintf(buf, "%u\n", fnode_conn->local_port);
8001                 break;
8002         case ISCSI_FLASHNODE_IPV4_TOS:
8003                 rc = sprintf(buf, "%u\n", fnode_conn->ipv4_tos);
8004                 break;
8005         case ISCSI_FLASHNODE_IPV6_TC:
8006                 if (!strncmp(fnode_sess->portal_type, PORTAL_TYPE_IPV6, 4))
8007                         rc = sprintf(buf, "%u\n",
8008                                      fnode_conn->ipv6_traffic_class);
8009                 else
8010                         rc = sprintf(buf, "\n");
8011                 break;
8012         case ISCSI_FLASHNODE_IPV6_FLOW_LABEL:
8013                 rc = sprintf(buf, "%u\n", fnode_conn->ipv6_flow_label);
8014                 break;
8015         case ISCSI_FLASHNODE_LINK_LOCAL_IPV6:
8016                 if (!strncmp(fnode_sess->portal_type, PORTAL_TYPE_IPV6, 4))
8017                         rc = sprintf(buf, "%pI6\n",
8018                                      fnode_conn->link_local_ipv6_addr);
8019                 else
8020                         rc = sprintf(buf, "\n");
8021                 break;
8022         case ISCSI_FLASHNODE_DISCOVERY_PARENT_IDX:
8023                 rc = sprintf(buf, "%u\n", fnode_sess->discovery_parent_idx);
8024                 break;
8025         case ISCSI_FLASHNODE_DISCOVERY_PARENT_TYPE:
8026                 if (fnode_sess->discovery_parent_type == DDB_ISNS)
8027                         parent_type = ISCSI_DISC_PARENT_ISNS;
8028                 else if (fnode_sess->discovery_parent_type == DDB_NO_LINK)
8029                         parent_type = ISCSI_DISC_PARENT_UNKNOWN;
8030                 else if (fnode_sess->discovery_parent_type < MAX_DDB_ENTRIES)
8031                         parent_type = ISCSI_DISC_PARENT_SENDTGT;
8032                 else
8033                         parent_type = ISCSI_DISC_PARENT_UNKNOWN;
8034
8035                 rc = sprintf(buf, "%s\n",
8036                              iscsi_get_discovery_parent_name(parent_type));
8037                 break;
8038         case ISCSI_FLASHNODE_NAME:
8039                 if (fnode_sess->targetname)
8040                         rc = sprintf(buf, "%s\n", fnode_sess->targetname);
8041                 else
8042                         rc = sprintf(buf, "\n");
8043                 break;
8044         case ISCSI_FLASHNODE_TPGT:
8045                 rc = sprintf(buf, "%u\n", fnode_sess->tpgt);
8046                 break;
8047         case ISCSI_FLASHNODE_TCP_XMIT_WSF:
8048                 rc = sprintf(buf, "%u\n", fnode_conn->tcp_xmit_wsf);
8049                 break;
8050         case ISCSI_FLASHNODE_TCP_RECV_WSF:
8051                 rc = sprintf(buf, "%u\n", fnode_conn->tcp_recv_wsf);
8052                 break;
8053         case ISCSI_FLASHNODE_CHAP_OUT_IDX:
8054                 rc = sprintf(buf, "%u\n", fnode_sess->chap_out_idx);
8055                 break;
8056         case ISCSI_FLASHNODE_USERNAME:
8057                 if (fnode_sess->chap_auth_en) {
8058                         qla4xxx_get_uni_chap_at_index(ha,
8059                                                       chap_tbl.name,
8060                                                       chap_tbl.secret,
8061                                                       fnode_sess->chap_out_idx);
8062                         rc = sprintf(buf, "%s\n", chap_tbl.name);
8063                 } else {
8064                         rc = sprintf(buf, "\n");
8065                 }
8066                 break;
8067         case ISCSI_FLASHNODE_PASSWORD:
8068                 if (fnode_sess->chap_auth_en) {
8069                         qla4xxx_get_uni_chap_at_index(ha,
8070                                                       chap_tbl.name,
8071                                                       chap_tbl.secret,
8072                                                       fnode_sess->chap_out_idx);
8073                         rc = sprintf(buf, "%s\n", chap_tbl.secret);
8074                 } else {
8075                         rc = sprintf(buf, "\n");
8076                 }
8077                 break;
8078         case ISCSI_FLASHNODE_STATSN:
8079                 rc = sprintf(buf, "%u\n", fnode_conn->statsn);
8080                 break;
8081         case ISCSI_FLASHNODE_EXP_STATSN:
8082                 rc = sprintf(buf, "%u\n", fnode_conn->exp_statsn);
8083                 break;
8084         case ISCSI_FLASHNODE_IS_BOOT_TGT:
8085                 rc = sprintf(buf, "%u\n", fnode_sess->is_boot_target);
8086                 break;
8087         default:
8088                 rc = -ENOSYS;
8089                 break;
8090         }
8091
8092         put_device(dev);
8093         return rc;
8094 }
8095
8096 /**
8097  * qla4xxx_sysfs_ddb_set_param - Set parameter for firmware DDB entry
8098  * @fnode_sess: pointer to session attrs of flash ddb entry
8099  * @fnode_conn: pointer to connection attrs of flash ddb entry
8100  * @data: Parameters and their values to update
8101  * @len: len of data
8102  *
8103  * This sets the parameter of flash ddb entry and writes them to flash
8104  **/
8105 static int
8106 qla4xxx_sysfs_ddb_set_param(struct iscsi_bus_flash_session *fnode_sess,
8107                             struct iscsi_bus_flash_conn *fnode_conn,
8108                             void *data, int len)
8109 {
8110         struct Scsi_Host *shost = iscsi_flash_session_to_shost(fnode_sess);
8111         struct scsi_qla_host *ha = to_qla_host(shost);
8112         struct iscsi_flashnode_param_info *fnode_param;
8113         struct ql4_chap_table chap_tbl;
8114         struct nlattr *attr;
8115         uint16_t chap_out_idx = INVALID_ENTRY;
8116         int rc = QLA_ERROR;
8117         uint32_t rem = len;
8118
8119         memset((void *)&chap_tbl, 0, sizeof(chap_tbl));
8120         nla_for_each_attr(attr, data, len, rem) {
8121                 fnode_param = nla_data(attr);
8122
8123                 switch (fnode_param->param) {
8124                 case ISCSI_FLASHNODE_IS_FW_ASSIGNED_IPV6:
8125                         fnode_conn->is_fw_assigned_ipv6 = fnode_param->value[0];
8126                         break;
8127                 case ISCSI_FLASHNODE_PORTAL_TYPE:
8128                         memcpy(fnode_sess->portal_type, fnode_param->value,
8129                                strlen(fnode_sess->portal_type));
8130                         break;
8131                 case ISCSI_FLASHNODE_AUTO_SND_TGT_DISABLE:
8132                         fnode_sess->auto_snd_tgt_disable =
8133                                                         fnode_param->value[0];
8134                         break;
8135                 case ISCSI_FLASHNODE_DISCOVERY_SESS:
8136                         fnode_sess->discovery_sess = fnode_param->value[0];
8137                         break;
8138                 case ISCSI_FLASHNODE_ENTRY_EN:
8139                         fnode_sess->entry_state = fnode_param->value[0];
8140                         break;
8141                 case ISCSI_FLASHNODE_HDR_DGST_EN:
8142                         fnode_conn->hdrdgst_en = fnode_param->value[0];
8143                         break;
8144                 case ISCSI_FLASHNODE_DATA_DGST_EN:
8145                         fnode_conn->datadgst_en = fnode_param->value[0];
8146                         break;
8147                 case ISCSI_FLASHNODE_IMM_DATA_EN:
8148                         fnode_sess->imm_data_en = fnode_param->value[0];
8149                         break;
8150                 case ISCSI_FLASHNODE_INITIAL_R2T_EN:
8151                         fnode_sess->initial_r2t_en = fnode_param->value[0];
8152                         break;
8153                 case ISCSI_FLASHNODE_DATASEQ_INORDER:
8154                         fnode_sess->dataseq_inorder_en = fnode_param->value[0];
8155                         break;
8156                 case ISCSI_FLASHNODE_PDU_INORDER:
8157                         fnode_sess->pdu_inorder_en = fnode_param->value[0];
8158                         break;
8159                 case ISCSI_FLASHNODE_CHAP_AUTH_EN:
8160                         fnode_sess->chap_auth_en = fnode_param->value[0];
8161                         /* Invalidate chap index if chap auth is disabled */
8162                         if (!fnode_sess->chap_auth_en)
8163                                 fnode_sess->chap_out_idx = INVALID_ENTRY;
8164
8165                         break;
8166                 case ISCSI_FLASHNODE_SNACK_REQ_EN:
8167                         fnode_conn->snack_req_en = fnode_param->value[0];
8168                         break;
8169                 case ISCSI_FLASHNODE_DISCOVERY_LOGOUT_EN:
8170                         fnode_sess->discovery_logout_en = fnode_param->value[0];
8171                         break;
8172                 case ISCSI_FLASHNODE_BIDI_CHAP_EN:
8173                         fnode_sess->bidi_chap_en = fnode_param->value[0];
8174                         break;
8175                 case ISCSI_FLASHNODE_DISCOVERY_AUTH_OPTIONAL:
8176                         fnode_sess->discovery_auth_optional =
8177                                                         fnode_param->value[0];
8178                         break;
8179                 case ISCSI_FLASHNODE_ERL:
8180                         fnode_sess->erl = fnode_param->value[0];
8181                         break;
8182                 case ISCSI_FLASHNODE_TCP_TIMESTAMP_STAT:
8183                         fnode_conn->tcp_timestamp_stat = fnode_param->value[0];
8184                         break;
8185                 case ISCSI_FLASHNODE_TCP_NAGLE_DISABLE:
8186                         fnode_conn->tcp_nagle_disable = fnode_param->value[0];
8187                         break;
8188                 case ISCSI_FLASHNODE_TCP_WSF_DISABLE:
8189                         fnode_conn->tcp_wsf_disable = fnode_param->value[0];
8190                         break;
8191                 case ISCSI_FLASHNODE_TCP_TIMER_SCALE:
8192                         fnode_conn->tcp_timer_scale = fnode_param->value[0];
8193                         break;
8194                 case ISCSI_FLASHNODE_TCP_TIMESTAMP_EN:
8195                         fnode_conn->tcp_timestamp_en = fnode_param->value[0];
8196                         break;
8197                 case ISCSI_FLASHNODE_IP_FRAG_DISABLE:
8198                         fnode_conn->fragment_disable = fnode_param->value[0];
8199                         break;
8200                 case ISCSI_FLASHNODE_MAX_RECV_DLENGTH:
8201                         fnode_conn->max_recv_dlength =
8202                                         *(unsigned *)fnode_param->value;
8203                         break;
8204                 case ISCSI_FLASHNODE_MAX_XMIT_DLENGTH:
8205                         fnode_conn->max_xmit_dlength =
8206                                         *(unsigned *)fnode_param->value;
8207                         break;
8208                 case ISCSI_FLASHNODE_FIRST_BURST:
8209                         fnode_sess->first_burst =
8210                                         *(unsigned *)fnode_param->value;
8211                         break;
8212                 case ISCSI_FLASHNODE_DEF_TIME2WAIT:
8213                         fnode_sess->time2wait = *(uint16_t *)fnode_param->value;
8214                         break;
8215                 case ISCSI_FLASHNODE_DEF_TIME2RETAIN:
8216                         fnode_sess->time2retain =
8217                                                 *(uint16_t *)fnode_param->value;
8218                         break;
8219                 case ISCSI_FLASHNODE_MAX_R2T:
8220                         fnode_sess->max_r2t =
8221                                         *(uint16_t *)fnode_param->value;
8222                         break;
8223                 case ISCSI_FLASHNODE_KEEPALIVE_TMO:
8224                         fnode_conn->keepalive_timeout =
8225                                 *(uint16_t *)fnode_param->value;
8226                         break;
8227                 case ISCSI_FLASHNODE_ISID:
8228                         memcpy(fnode_sess->isid, fnode_param->value,
8229                                sizeof(fnode_sess->isid));
8230                         break;
8231                 case ISCSI_FLASHNODE_TSID:
8232                         fnode_sess->tsid = *(uint16_t *)fnode_param->value;
8233                         break;
8234                 case ISCSI_FLASHNODE_PORT:
8235                         fnode_conn->port = *(uint16_t *)fnode_param->value;
8236                         break;
8237                 case ISCSI_FLASHNODE_MAX_BURST:
8238                         fnode_sess->max_burst = *(unsigned *)fnode_param->value;
8239                         break;
8240                 case ISCSI_FLASHNODE_DEF_TASKMGMT_TMO:
8241                         fnode_sess->default_taskmgmt_timeout =
8242                                                 *(uint16_t *)fnode_param->value;
8243                         break;
8244                 case ISCSI_FLASHNODE_IPADDR:
8245                         memcpy(fnode_conn->ipaddress, fnode_param->value,
8246                                IPv6_ADDR_LEN);
8247                         break;
8248                 case ISCSI_FLASHNODE_ALIAS:
8249                         rc = iscsi_switch_str_param(&fnode_sess->targetalias,
8250                                                     (char *)fnode_param->value);
8251                         break;
8252                 case ISCSI_FLASHNODE_REDIRECT_IPADDR:
8253                         memcpy(fnode_conn->redirect_ipaddr, fnode_param->value,
8254                                IPv6_ADDR_LEN);
8255                         break;
8256                 case ISCSI_FLASHNODE_MAX_SEGMENT_SIZE:
8257                         fnode_conn->max_segment_size =
8258                                         *(unsigned *)fnode_param->value;
8259                         break;
8260                 case ISCSI_FLASHNODE_LOCAL_PORT:
8261                         fnode_conn->local_port =
8262                                                 *(uint16_t *)fnode_param->value;
8263                         break;
8264                 case ISCSI_FLASHNODE_IPV4_TOS:
8265                         fnode_conn->ipv4_tos = fnode_param->value[0];
8266                         break;
8267                 case ISCSI_FLASHNODE_IPV6_TC:
8268                         fnode_conn->ipv6_traffic_class = fnode_param->value[0];
8269                         break;
8270                 case ISCSI_FLASHNODE_IPV6_FLOW_LABEL:
8271                         fnode_conn->ipv6_flow_label = fnode_param->value[0];
8272                         break;
8273                 case ISCSI_FLASHNODE_NAME:
8274                         rc = iscsi_switch_str_param(&fnode_sess->targetname,
8275                                                     (char *)fnode_param->value);
8276                         break;
8277                 case ISCSI_FLASHNODE_TPGT:
8278                         fnode_sess->tpgt = *(uint16_t *)fnode_param->value;
8279                         break;
8280                 case ISCSI_FLASHNODE_LINK_LOCAL_IPV6:
8281                         memcpy(fnode_conn->link_local_ipv6_addr,
8282                                fnode_param->value, IPv6_ADDR_LEN);
8283                         break;
8284                 case ISCSI_FLASHNODE_DISCOVERY_PARENT_IDX:
8285                         fnode_sess->discovery_parent_idx =
8286                                                 *(uint16_t *)fnode_param->value;
8287                         break;
8288                 case ISCSI_FLASHNODE_TCP_XMIT_WSF:
8289                         fnode_conn->tcp_xmit_wsf =
8290                                                 *(uint8_t *)fnode_param->value;
8291                         break;
8292                 case ISCSI_FLASHNODE_TCP_RECV_WSF:
8293                         fnode_conn->tcp_recv_wsf =
8294                                                 *(uint8_t *)fnode_param->value;
8295                         break;
8296                 case ISCSI_FLASHNODE_STATSN:
8297                         fnode_conn->statsn = *(uint32_t *)fnode_param->value;
8298                         break;
8299                 case ISCSI_FLASHNODE_EXP_STATSN:
8300                         fnode_conn->exp_statsn =
8301                                                 *(uint32_t *)fnode_param->value;
8302                         break;
8303                 case ISCSI_FLASHNODE_CHAP_OUT_IDX:
8304                         chap_out_idx = *(uint16_t *)fnode_param->value;
8305                         if (!qla4xxx_get_uni_chap_at_index(ha,
8306                                                            chap_tbl.name,
8307                                                            chap_tbl.secret,
8308                                                            chap_out_idx)) {
8309                                 fnode_sess->chap_out_idx = chap_out_idx;
8310                                 /* Enable chap auth if chap index is valid */
8311                                 fnode_sess->chap_auth_en = QL4_PARAM_ENABLE;
8312                         }
8313                         break;
8314                 default:
8315                         ql4_printk(KERN_ERR, ha,
8316                                    "%s: No such sysfs attribute\n", __func__);
8317                         rc = -ENOSYS;
8318                         goto exit_set_param;
8319                 }
8320         }
8321
8322         rc = qla4xxx_sysfs_ddb_apply(fnode_sess, fnode_conn);
8323
8324 exit_set_param:
8325         return rc;
8326 }
8327
8328 /**
8329  * qla4xxx_sysfs_ddb_delete - Delete firmware DDB entry
8330  * @fnode_sess: pointer to session attrs of flash ddb entry
8331  *
8332  * This invalidates the flash ddb entry at the given index
8333  **/
8334 static int qla4xxx_sysfs_ddb_delete(struct iscsi_bus_flash_session *fnode_sess)
8335 {
8336         struct Scsi_Host *shost = iscsi_flash_session_to_shost(fnode_sess);
8337         struct scsi_qla_host *ha = to_qla_host(shost);
8338         uint32_t dev_db_start_offset;
8339         uint32_t dev_db_end_offset;
8340         struct dev_db_entry *fw_ddb_entry = NULL;
8341         dma_addr_t fw_ddb_entry_dma;
8342         uint16_t *ddb_cookie = NULL;
8343         size_t ddb_size = 0;
8344         void *pddb = NULL;
8345         int target_id;
8346         int rc = 0;
8347
8348         if (fnode_sess->is_boot_target) {
8349                 rc = -EPERM;
8350                 DEBUG2(ql4_printk(KERN_ERR, ha,
8351                                   "%s: Deletion of boot target entry is not permitted.\n",
8352                                   __func__));
8353                 goto exit_ddb_del;
8354         }
8355
8356         if (fnode_sess->flash_state == DEV_DB_NON_PERSISTENT)
8357                 goto sysfs_ddb_del;
8358
8359         if (is_qla40XX(ha)) {
8360                 dev_db_start_offset = FLASH_OFFSET_DB_INFO;
8361                 dev_db_end_offset = FLASH_OFFSET_DB_END;
8362                 dev_db_start_offset += (fnode_sess->target_id *
8363                                        sizeof(*fw_ddb_entry));
8364                 ddb_size = sizeof(*fw_ddb_entry);
8365         } else {
8366                 dev_db_start_offset = FLASH_RAW_ACCESS_ADDR +
8367                                       (ha->hw.flt_region_ddb << 2);
8368                 /* flt_ddb_size is DDB table size for both ports
8369                  * so divide it by 2 to calculate the offset for second port
8370                  */
8371                 if (ha->port_num == 1)
8372                         dev_db_start_offset += (ha->hw.flt_ddb_size / 2);
8373
8374                 dev_db_end_offset = dev_db_start_offset +
8375                                     (ha->hw.flt_ddb_size / 2);
8376
8377                 dev_db_start_offset += (fnode_sess->target_id *
8378                                        sizeof(*fw_ddb_entry));
8379                 dev_db_start_offset += offsetof(struct dev_db_entry, cookie);
8380
8381                 ddb_size = sizeof(*ddb_cookie);
8382         }
8383
8384         DEBUG2(ql4_printk(KERN_ERR, ha, "%s: start offset=%u, end offset=%u\n",
8385                           __func__, dev_db_start_offset, dev_db_end_offset));
8386
8387         if (dev_db_start_offset > dev_db_end_offset) {
8388                 rc = -EIO;
8389                 DEBUG2(ql4_printk(KERN_ERR, ha, "%s:Invalid DDB index %u\n",
8390                                   __func__, fnode_sess->target_id));
8391                 goto exit_ddb_del;
8392         }
8393
8394         pddb = dma_alloc_coherent(&ha->pdev->dev, ddb_size,
8395                                   &fw_ddb_entry_dma, GFP_KERNEL);
8396         if (!pddb) {
8397                 rc = -ENOMEM;
8398                 DEBUG2(ql4_printk(KERN_ERR, ha,
8399                                   "%s: Unable to allocate dma buffer\n",
8400                                   __func__));
8401                 goto exit_ddb_del;
8402         }
8403
8404         if (is_qla40XX(ha)) {
8405                 fw_ddb_entry = pddb;
8406                 memset(fw_ddb_entry, 0, ddb_size);
8407                 ddb_cookie = &fw_ddb_entry->cookie;
8408         } else {
8409                 ddb_cookie = pddb;
8410         }
8411
8412         /* invalidate the cookie */
8413         *ddb_cookie = 0xFFEE;
8414         qla4xxx_set_flash(ha, fw_ddb_entry_dma, dev_db_start_offset,
8415                           ddb_size, FLASH_OPT_RMW_COMMIT);
8416
8417 sysfs_ddb_del:
8418         target_id = fnode_sess->target_id;
8419         iscsi_destroy_flashnode_sess(fnode_sess);
8420         ql4_printk(KERN_INFO, ha,
8421                    "%s: session and conn entries for flashnode %u of host %lu deleted\n",
8422                    __func__, target_id, ha->host_no);
8423 exit_ddb_del:
8424         if (pddb)
8425                 dma_free_coherent(&ha->pdev->dev, ddb_size, pddb,
8426                                   fw_ddb_entry_dma);
8427         return rc;
8428 }
8429
8430 /**
8431  * qla4xxx_sysfs_ddb_export - Create sysfs entries for firmware DDBs
8432  * @ha: pointer to adapter structure
8433  *
8434  * Export the firmware DDB for all send targets and normal targets to sysfs.
8435  **/
8436 int qla4xxx_sysfs_ddb_export(struct scsi_qla_host *ha)
8437 {
8438         struct dev_db_entry *fw_ddb_entry = NULL;
8439         dma_addr_t fw_ddb_entry_dma;
8440         uint16_t max_ddbs;
8441         uint16_t idx = 0;
8442         int ret = QLA_SUCCESS;
8443
8444         fw_ddb_entry = dma_alloc_coherent(&ha->pdev->dev,
8445                                           sizeof(*fw_ddb_entry),
8446                                           &fw_ddb_entry_dma, GFP_KERNEL);
8447         if (!fw_ddb_entry) {
8448                 DEBUG2(ql4_printk(KERN_ERR, ha,
8449                                   "%s: Unable to allocate dma buffer\n",
8450                                   __func__));
8451                 return -ENOMEM;
8452         }
8453
8454         max_ddbs =  is_qla40XX(ha) ? MAX_PRST_DEV_DB_ENTRIES :
8455                                      MAX_DEV_DB_ENTRIES;
8456
8457         for (idx = 0; idx < max_ddbs; idx++) {
8458                 if (qla4xxx_flashdb_by_index(ha, fw_ddb_entry, fw_ddb_entry_dma,
8459                                              idx))
8460                         continue;
8461
8462                 ret = qla4xxx_sysfs_ddb_tgt_create(ha, fw_ddb_entry, &idx, 0);
8463                 if (ret) {
8464                         ret = -EIO;
8465                         break;
8466                 }
8467         }
8468
8469         dma_free_coherent(&ha->pdev->dev, sizeof(*fw_ddb_entry), fw_ddb_entry,
8470                           fw_ddb_entry_dma);
8471
8472         return ret;
8473 }
8474
8475 static void qla4xxx_sysfs_ddb_remove(struct scsi_qla_host *ha)
8476 {
8477         iscsi_destroy_all_flashnode(ha->host);
8478 }
8479
8480 /**
8481  * qla4xxx_build_ddb_list - Build ddb list and setup sessions
8482  * @ha: pointer to adapter structure
8483  * @is_reset: Is this init path or reset path
8484  *
8485  * Create a list of sendtargets (st) from firmware DDBs, issue send targets
8486  * using connection open, then create the list of normal targets (nt)
8487  * from firmware DDBs. Based on the list of nt setup session and connection
8488  * objects.
8489  **/
8490 void qla4xxx_build_ddb_list(struct scsi_qla_host *ha, int is_reset)
8491 {
8492         uint16_t tmo = 0;
8493         struct list_head list_st, list_nt;
8494         struct qla_ddb_index  *st_ddb_idx, *st_ddb_idx_tmp;
8495         unsigned long wtime;
8496
8497         if (!test_bit(AF_LINK_UP, &ha->flags)) {
8498                 set_bit(AF_BUILD_DDB_LIST, &ha->flags);
8499                 ha->is_reset = is_reset;
8500                 return;
8501         }
8502
8503         INIT_LIST_HEAD(&list_st);
8504         INIT_LIST_HEAD(&list_nt);
8505
8506         qla4xxx_build_st_list(ha, &list_st);
8507
8508         /* Before issuing conn open mbox, ensure all IPs states are configured
8509          * Note, conn open fails if IPs are not configured
8510          */
8511         qla4xxx_wait_for_ip_configuration(ha);
8512
8513         /* Go thru the STs and fire the sendtargets by issuing conn open mbx */
8514         list_for_each_entry_safe(st_ddb_idx, st_ddb_idx_tmp, &list_st, list) {
8515                 qla4xxx_conn_open(ha, st_ddb_idx->fw_ddb_idx);
8516         }
8517
8518         /* Wait to ensure all sendtargets are done for min 12 sec wait */
8519         tmo = ((ha->def_timeout > LOGIN_TOV) &&
8520                (ha->def_timeout < LOGIN_TOV * 10) ?
8521                ha->def_timeout : LOGIN_TOV);
8522
8523         DEBUG2(ql4_printk(KERN_INFO, ha,
8524                           "Default time to wait for build ddb %d\n", tmo));
8525
8526         wtime = jiffies + (HZ * tmo);
8527         do {
8528                 if (list_empty(&list_st))
8529                         break;
8530
8531                 qla4xxx_remove_failed_ddb(ha, &list_st);
8532                 schedule_timeout_uninterruptible(HZ / 10);
8533         } while (time_after(wtime, jiffies));
8534
8535
8536         qla4xxx_build_nt_list(ha, &list_nt, &list_st, is_reset);
8537
8538         qla4xxx_free_ddb_list(&list_st);
8539         qla4xxx_free_ddb_list(&list_nt);
8540
8541         qla4xxx_free_ddb_index(ha);
8542 }
8543
8544 /**
8545  * qla4xxx_wait_login_resp_boot_tgt -  Wait for iSCSI boot target login
8546  * response.
8547  * @ha: pointer to adapter structure
8548  *
8549  * When the boot entry is normal iSCSI target then DF_BOOT_TGT flag will be
8550  * set in DDB and we will wait for login response of boot targets during
8551  * probe.
8552  **/
8553 static void qla4xxx_wait_login_resp_boot_tgt(struct scsi_qla_host *ha)
8554 {
8555         struct ddb_entry *ddb_entry;
8556         struct dev_db_entry *fw_ddb_entry = NULL;
8557         dma_addr_t fw_ddb_entry_dma;
8558         unsigned long wtime;
8559         uint32_t ddb_state;
8560         int max_ddbs, idx, ret;
8561
8562         max_ddbs =  is_qla40XX(ha) ? MAX_DEV_DB_ENTRIES_40XX :
8563                                      MAX_DEV_DB_ENTRIES;
8564
8565         fw_ddb_entry = dma_alloc_coherent(&ha->pdev->dev, sizeof(*fw_ddb_entry),
8566                                           &fw_ddb_entry_dma, GFP_KERNEL);
8567         if (!fw_ddb_entry) {
8568                 ql4_printk(KERN_ERR, ha,
8569                            "%s: Unable to allocate dma buffer\n", __func__);
8570                 goto exit_login_resp;
8571         }
8572
8573         wtime = jiffies + (HZ * BOOT_LOGIN_RESP_TOV);
8574
8575         for (idx = 0; idx < max_ddbs; idx++) {
8576                 ddb_entry = qla4xxx_lookup_ddb_by_fw_index(ha, idx);
8577                 if (ddb_entry == NULL)
8578                         continue;
8579
8580                 if (test_bit(DF_BOOT_TGT, &ddb_entry->flags)) {
8581                         DEBUG2(ql4_printk(KERN_INFO, ha,
8582                                           "%s: DDB index [%d]\n", __func__,
8583                                           ddb_entry->fw_ddb_index));
8584                         do {
8585                                 ret = qla4xxx_get_fwddb_entry(ha,
8586                                                 ddb_entry->fw_ddb_index,
8587                                                 fw_ddb_entry, fw_ddb_entry_dma,
8588                                                 NULL, NULL, &ddb_state, NULL,
8589                                                 NULL, NULL);
8590                                 if (ret == QLA_ERROR)
8591                                         goto exit_login_resp;
8592
8593                                 if ((ddb_state == DDB_DS_SESSION_ACTIVE) ||
8594                                     (ddb_state == DDB_DS_SESSION_FAILED))
8595                                         break;
8596
8597                                 schedule_timeout_uninterruptible(HZ);
8598
8599                         } while ((time_after(wtime, jiffies)));
8600
8601                         if (!time_after(wtime, jiffies)) {
8602                                 DEBUG2(ql4_printk(KERN_INFO, ha,
8603                                                   "%s: Login response wait timer expired\n",
8604                                                   __func__));
8605                                  goto exit_login_resp;
8606                         }
8607                 }
8608         }
8609
8610 exit_login_resp:
8611         if (fw_ddb_entry)
8612                 dma_free_coherent(&ha->pdev->dev, sizeof(*fw_ddb_entry),
8613                                   fw_ddb_entry, fw_ddb_entry_dma);
8614 }
8615
8616 /**
8617  * qla4xxx_probe_adapter - callback function to probe HBA
8618  * @pdev: pointer to pci_dev structure
8619  * @ent: pointer to pci_device entry
8620  *
8621  * This routine will probe for Qlogic 4xxx iSCSI host adapters.
8622  * It returns zero if successful. It also initializes all data necessary for
8623  * the driver.
8624  **/
8625 static int qla4xxx_probe_adapter(struct pci_dev *pdev,
8626                                  const struct pci_device_id *ent)
8627 {
8628         int ret = -ENODEV, status;
8629         struct Scsi_Host *host;
8630         struct scsi_qla_host *ha;
8631         uint8_t init_retry_count = 0;
8632         char buf[34];
8633         struct qla4_8xxx_legacy_intr_set *nx_legacy_intr;
8634         uint32_t dev_state;
8635
8636         if (pci_enable_device(pdev))
8637                 return -1;
8638
8639         host = iscsi_host_alloc(&qla4xxx_driver_template, sizeof(*ha), 0);
8640         if (host == NULL) {
8641                 printk(KERN_WARNING
8642                        "qla4xxx: Couldn't allocate host from scsi layer!\n");
8643                 goto probe_disable_device;
8644         }
8645
8646         /* Clear our data area */
8647         ha = to_qla_host(host);
8648         memset(ha, 0, sizeof(*ha));
8649
8650         /* Save the information from PCI BIOS.  */
8651         ha->pdev = pdev;
8652         ha->host = host;
8653         ha->host_no = host->host_no;
8654         ha->func_num = PCI_FUNC(ha->pdev->devfn);
8655
8656         pci_enable_pcie_error_reporting(pdev);
8657
8658         /* Setup Runtime configurable options */
8659         if (is_qla8022(ha)) {
8660                 ha->isp_ops = &qla4_82xx_isp_ops;
8661                 ha->reg_tbl = (uint32_t *) qla4_82xx_reg_tbl;
8662                 ha->qdr_sn_window = -1;
8663                 ha->ddr_mn_window = -1;
8664                 ha->curr_window = 255;
8665                 nx_legacy_intr = &legacy_intr[ha->func_num];
8666                 ha->nx_legacy_intr.int_vec_bit = nx_legacy_intr->int_vec_bit;
8667                 ha->nx_legacy_intr.tgt_status_reg =
8668                         nx_legacy_intr->tgt_status_reg;
8669                 ha->nx_legacy_intr.tgt_mask_reg = nx_legacy_intr->tgt_mask_reg;
8670                 ha->nx_legacy_intr.pci_int_reg = nx_legacy_intr->pci_int_reg;
8671         } else if (is_qla8032(ha) || is_qla8042(ha)) {
8672                 ha->isp_ops = &qla4_83xx_isp_ops;
8673                 ha->reg_tbl = (uint32_t *)qla4_83xx_reg_tbl;
8674         } else {
8675                 ha->isp_ops = &qla4xxx_isp_ops;
8676         }
8677
8678         if (is_qla80XX(ha)) {
8679                 rwlock_init(&ha->hw_lock);
8680                 ha->pf_bit = ha->func_num << 16;
8681                 /* Set EEH reset type to fundamental if required by hba */
8682                 pdev->needs_freset = 1;
8683         }
8684
8685         /* Configure PCI I/O space. */
8686         ret = ha->isp_ops->iospace_config(ha);
8687         if (ret)
8688                 goto probe_failed_ioconfig;
8689
8690         ql4_printk(KERN_INFO, ha, "Found an ISP%04x, irq %d, iobase 0x%p\n",
8691                    pdev->device, pdev->irq, ha->reg);
8692
8693         qla4xxx_config_dma_addressing(ha);
8694
8695         /* Initialize lists and spinlocks. */
8696         INIT_LIST_HEAD(&ha->free_srb_q);
8697
8698         mutex_init(&ha->mbox_sem);
8699         mutex_init(&ha->chap_sem);
8700         init_completion(&ha->mbx_intr_comp);
8701         init_completion(&ha->disable_acb_comp);
8702         init_completion(&ha->idc_comp);
8703         init_completion(&ha->link_up_comp);
8704
8705         spin_lock_init(&ha->hardware_lock);
8706         spin_lock_init(&ha->work_lock);
8707
8708         /* Initialize work list */
8709         INIT_LIST_HEAD(&ha->work_list);
8710
8711         /* Allocate dma buffers */
8712         if (qla4xxx_mem_alloc(ha)) {
8713                 ql4_printk(KERN_WARNING, ha,
8714                     "[ERROR] Failed to allocate memory for adapter\n");
8715
8716                 ret = -ENOMEM;
8717                 goto probe_failed;
8718         }
8719
8720         host->cmd_per_lun = 3;
8721         host->max_channel = 0;
8722         host->max_lun = MAX_LUNS - 1;
8723         host->max_id = MAX_TARGETS;
8724         host->max_cmd_len = IOCB_MAX_CDB_LEN;
8725         host->can_queue = MAX_SRBS ;
8726         host->transportt = qla4xxx_scsi_transport;
8727
8728         pci_set_drvdata(pdev, ha);
8729
8730         ret = scsi_add_host(host, &pdev->dev);
8731         if (ret)
8732                 goto probe_failed;
8733
8734         if (is_qla80XX(ha))
8735                 qla4_8xxx_get_flash_info(ha);
8736
8737         if (is_qla8032(ha) || is_qla8042(ha)) {
8738                 qla4_83xx_read_reset_template(ha);
8739                 /*
8740                  * NOTE: If ql4dontresethba==1, set IDC_CTRL DONTRESET_BIT0.
8741                  * If DONRESET_BIT0 is set, drivers should not set dev_state
8742                  * to NEED_RESET. But if NEED_RESET is set, drivers should
8743                  * should honor the reset.
8744                  */
8745                 if (ql4xdontresethba == 1)
8746                         qla4_83xx_set_idc_dontreset(ha);
8747         }
8748
8749         /*
8750          * Initialize the Host adapter request/response queues and
8751          * firmware
8752          * NOTE: interrupts enabled upon successful completion
8753          */
8754         status = qla4xxx_initialize_adapter(ha, INIT_ADAPTER);
8755
8756         /* Dont retry adapter initialization if IRQ allocation failed */
8757         if (is_qla80XX(ha) && (status == QLA_ERROR))
8758                 goto skip_retry_init;
8759
8760         while ((!test_bit(AF_ONLINE, &ha->flags)) &&
8761             init_retry_count++ < MAX_INIT_RETRIES) {
8762
8763                 if (is_qla80XX(ha)) {
8764                         ha->isp_ops->idc_lock(ha);
8765                         dev_state = qla4_8xxx_rd_direct(ha,
8766                                                         QLA8XXX_CRB_DEV_STATE);
8767                         ha->isp_ops->idc_unlock(ha);
8768                         if (dev_state == QLA8XXX_DEV_FAILED) {
8769                                 ql4_printk(KERN_WARNING, ha, "%s: don't retry "
8770                                     "initialize adapter. H/W is in failed state\n",
8771                                     __func__);
8772                                 break;
8773                         }
8774                 }
8775                 DEBUG2(printk("scsi: %s: retrying adapter initialization "
8776                               "(%d)\n", __func__, init_retry_count));
8777
8778                 if (ha->isp_ops->reset_chip(ha) == QLA_ERROR)
8779                         continue;
8780
8781                 status = qla4xxx_initialize_adapter(ha, INIT_ADAPTER);
8782                 if (is_qla80XX(ha) && (status == QLA_ERROR)) {
8783                         if (qla4_8xxx_check_init_adapter_retry(ha) == QLA_ERROR)
8784                                 goto skip_retry_init;
8785                 }
8786         }
8787
8788 skip_retry_init:
8789         if (!test_bit(AF_ONLINE, &ha->flags)) {
8790                 ql4_printk(KERN_WARNING, ha, "Failed to initialize adapter\n");
8791
8792                 if ((is_qla8022(ha) && ql4xdontresethba) ||
8793                     ((is_qla8032(ha) || is_qla8042(ha)) &&
8794                      qla4_83xx_idc_dontreset(ha))) {
8795                         /* Put the device in failed state. */
8796                         DEBUG2(printk(KERN_ERR "HW STATE: FAILED\n"));
8797                         ha->isp_ops->idc_lock(ha);
8798                         qla4_8xxx_wr_direct(ha, QLA8XXX_CRB_DEV_STATE,
8799                                             QLA8XXX_DEV_FAILED);
8800                         ha->isp_ops->idc_unlock(ha);
8801                 }
8802                 ret = -ENODEV;
8803                 goto remove_host;
8804         }
8805
8806         /* Startup the kernel thread for this host adapter. */
8807         DEBUG2(printk("scsi: %s: Starting kernel thread for "
8808                       "qla4xxx_dpc\n", __func__));
8809         sprintf(buf, "qla4xxx_%lu_dpc", ha->host_no);
8810         ha->dpc_thread = create_singlethread_workqueue(buf);
8811         if (!ha->dpc_thread) {
8812                 ql4_printk(KERN_WARNING, ha, "Unable to start DPC thread!\n");
8813                 ret = -ENODEV;
8814                 goto remove_host;
8815         }
8816         INIT_WORK(&ha->dpc_work, qla4xxx_do_dpc);
8817
8818         ha->task_wq = alloc_workqueue("qla4xxx_%lu_task", WQ_MEM_RECLAIM, 1,
8819                                       ha->host_no);
8820         if (!ha->task_wq) {
8821                 ql4_printk(KERN_WARNING, ha, "Unable to start task thread!\n");
8822                 ret = -ENODEV;
8823                 goto remove_host;
8824         }
8825
8826         /*
8827          * For ISP-8XXX, request_irqs is called in qla4_8xxx_load_risc
8828          * (which is called indirectly by qla4xxx_initialize_adapter),
8829          * so that irqs will be registered after crbinit but before
8830          * mbx_intr_enable.
8831          */
8832         if (is_qla40XX(ha)) {
8833                 ret = qla4xxx_request_irqs(ha);
8834                 if (ret) {
8835                         ql4_printk(KERN_WARNING, ha, "Failed to reserve "
8836                             "interrupt %d already in use.\n", pdev->irq);
8837                         goto remove_host;
8838                 }
8839         }
8840
8841         pci_save_state(ha->pdev);
8842         ha->isp_ops->enable_intrs(ha);
8843
8844         /* Start timer thread. */
8845         qla4xxx_start_timer(ha, 1);
8846
8847         set_bit(AF_INIT_DONE, &ha->flags);
8848
8849         qla4_8xxx_alloc_sysfs_attr(ha);
8850
8851         printk(KERN_INFO
8852                " QLogic iSCSI HBA Driver version: %s\n"
8853                "  QLogic ISP%04x @ %s, host#=%ld, fw=%02d.%02d.%02d.%02d\n",
8854                qla4xxx_version_str, ha->pdev->device, pci_name(ha->pdev),
8855                ha->host_no, ha->fw_info.fw_major, ha->fw_info.fw_minor,
8856                ha->fw_info.fw_patch, ha->fw_info.fw_build);
8857
8858         /* Set the driver version */
8859         if (is_qla80XX(ha))
8860                 qla4_8xxx_set_param(ha, SET_DRVR_VERSION);
8861
8862         if (qla4xxx_setup_boot_info(ha))
8863                 ql4_printk(KERN_ERR, ha,
8864                            "%s: No iSCSI boot target configured\n", __func__);
8865
8866         set_bit(DPC_SYSFS_DDB_EXPORT, &ha->dpc_flags);
8867         /* Perform the build ddb list and login to each */
8868         qla4xxx_build_ddb_list(ha, INIT_ADAPTER);
8869         iscsi_host_for_each_session(ha->host, qla4xxx_login_flash_ddb);
8870         qla4xxx_wait_login_resp_boot_tgt(ha);
8871
8872         qla4xxx_create_chap_list(ha);
8873
8874         qla4xxx_create_ifaces(ha);
8875         return 0;
8876
8877 remove_host:
8878         scsi_remove_host(ha->host);
8879
8880 probe_failed:
8881         qla4xxx_free_adapter(ha);
8882
8883 probe_failed_ioconfig:
8884         pci_disable_pcie_error_reporting(pdev);
8885         scsi_host_put(ha->host);
8886
8887 probe_disable_device:
8888         pci_disable_device(pdev);
8889
8890         return ret;
8891 }
8892
8893 /**
8894  * qla4xxx_prevent_other_port_reinit - prevent other port from re-initialize
8895  * @ha: pointer to adapter structure
8896  *
8897  * Mark the other ISP-4xxx port to indicate that the driver is being removed,
8898  * so that the other port will not re-initialize while in the process of
8899  * removing the ha due to driver unload or hba hotplug.
8900  **/
8901 static void qla4xxx_prevent_other_port_reinit(struct scsi_qla_host *ha)
8902 {
8903         struct scsi_qla_host *other_ha = NULL;
8904         struct pci_dev *other_pdev = NULL;
8905         int fn = ISP4XXX_PCI_FN_2;
8906
8907         /*iscsi function numbers for ISP4xxx is 1 and 3*/
8908         if (PCI_FUNC(ha->pdev->devfn) & BIT_1)
8909                 fn = ISP4XXX_PCI_FN_1;
8910
8911         other_pdev =
8912                 pci_get_domain_bus_and_slot(pci_domain_nr(ha->pdev->bus),
8913                 ha->pdev->bus->number, PCI_DEVFN(PCI_SLOT(ha->pdev->devfn),
8914                 fn));
8915
8916         /* Get other_ha if other_pdev is valid and state is enable*/
8917         if (other_pdev) {
8918                 if (atomic_read(&other_pdev->enable_cnt)) {
8919                         other_ha = pci_get_drvdata(other_pdev);
8920                         if (other_ha) {
8921                                 set_bit(AF_HA_REMOVAL, &other_ha->flags);
8922                                 DEBUG2(ql4_printk(KERN_INFO, ha, "%s: "
8923                                     "Prevent %s reinit\n", __func__,
8924                                     dev_name(&other_ha->pdev->dev)));
8925                         }
8926                 }
8927                 pci_dev_put(other_pdev);
8928         }
8929 }
8930
8931 static void qla4xxx_destroy_ddb(struct scsi_qla_host *ha,
8932                 struct ddb_entry *ddb_entry)
8933 {
8934         struct dev_db_entry *fw_ddb_entry = NULL;
8935         dma_addr_t fw_ddb_entry_dma;
8936         unsigned long wtime;
8937         uint32_t ddb_state;
8938         int options;
8939         int status;
8940
8941         options = LOGOUT_OPTION_CLOSE_SESSION;
8942         if (qla4xxx_session_logout_ddb(ha, ddb_entry, options) == QLA_ERROR) {
8943                 ql4_printk(KERN_ERR, ha, "%s: Logout failed\n", __func__);
8944                 goto clear_ddb;
8945         }
8946
8947         fw_ddb_entry = dma_alloc_coherent(&ha->pdev->dev, sizeof(*fw_ddb_entry),
8948                                           &fw_ddb_entry_dma, GFP_KERNEL);
8949         if (!fw_ddb_entry) {
8950                 ql4_printk(KERN_ERR, ha,
8951                            "%s: Unable to allocate dma buffer\n", __func__);
8952                 goto clear_ddb;
8953         }
8954
8955         wtime = jiffies + (HZ * LOGOUT_TOV);
8956         do {
8957                 status = qla4xxx_get_fwddb_entry(ha, ddb_entry->fw_ddb_index,
8958                                                  fw_ddb_entry, fw_ddb_entry_dma,
8959                                                  NULL, NULL, &ddb_state, NULL,
8960                                                  NULL, NULL);
8961                 if (status == QLA_ERROR)
8962                         goto free_ddb;
8963
8964                 if ((ddb_state == DDB_DS_NO_CONNECTION_ACTIVE) ||
8965                     (ddb_state == DDB_DS_SESSION_FAILED))
8966                         goto free_ddb;
8967
8968                 schedule_timeout_uninterruptible(HZ);
8969         } while ((time_after(wtime, jiffies)));
8970
8971 free_ddb:
8972         dma_free_coherent(&ha->pdev->dev, sizeof(*fw_ddb_entry),
8973                           fw_ddb_entry, fw_ddb_entry_dma);
8974 clear_ddb:
8975         qla4xxx_clear_ddb_entry(ha, ddb_entry->fw_ddb_index);
8976 }
8977
8978 static void qla4xxx_destroy_fw_ddb_session(struct scsi_qla_host *ha)
8979 {
8980         struct ddb_entry *ddb_entry;
8981         int idx;
8982
8983         for (idx = 0; idx < MAX_DDB_ENTRIES; idx++) {
8984
8985                 ddb_entry = qla4xxx_lookup_ddb_by_fw_index(ha, idx);
8986                 if ((ddb_entry != NULL) &&
8987                     (ddb_entry->ddb_type == FLASH_DDB)) {
8988
8989                         qla4xxx_destroy_ddb(ha, ddb_entry);
8990                         /*
8991                          * we have decremented the reference count of the driver
8992                          * when we setup the session to have the driver unload
8993                          * to be seamless without actually destroying the
8994                          * session
8995                          **/
8996                         try_module_get(qla4xxx_iscsi_transport.owner);
8997                         iscsi_destroy_endpoint(ddb_entry->conn->ep);
8998                         qla4xxx_free_ddb(ha, ddb_entry);
8999                         iscsi_session_teardown(ddb_entry->sess);
9000                 }
9001         }
9002 }
9003 /**
9004  * qla4xxx_remove_adapter - callback function to remove adapter.
9005  * @pdev: PCI device pointer
9006  **/
9007 static void qla4xxx_remove_adapter(struct pci_dev *pdev)
9008 {
9009         struct scsi_qla_host *ha;
9010
9011         /*
9012          * If the PCI device is disabled then it means probe_adapter had
9013          * failed and resources already cleaned up on probe_adapter exit.
9014          */
9015         if (!pci_is_enabled(pdev))
9016                 return;
9017
9018         ha = pci_get_drvdata(pdev);
9019
9020         if (is_qla40XX(ha))
9021                 qla4xxx_prevent_other_port_reinit(ha);
9022
9023         /* destroy iface from sysfs */
9024         qla4xxx_destroy_ifaces(ha);
9025
9026         if ((!ql4xdisablesysfsboot) && ha->boot_kset)
9027                 iscsi_boot_destroy_kset(ha->boot_kset);
9028
9029         qla4xxx_destroy_fw_ddb_session(ha);
9030         qla4_8xxx_free_sysfs_attr(ha);
9031
9032         qla4xxx_sysfs_ddb_remove(ha);
9033         scsi_remove_host(ha->host);
9034
9035         qla4xxx_free_adapter(ha);
9036
9037         scsi_host_put(ha->host);
9038
9039         pci_disable_pcie_error_reporting(pdev);
9040         pci_disable_device(pdev);
9041 }
9042
9043 /**
9044  * qla4xxx_config_dma_addressing() - Configure OS DMA addressing method.
9045  * @ha: HA context
9046  */
9047 static void qla4xxx_config_dma_addressing(struct scsi_qla_host *ha)
9048 {
9049         /* Update our PCI device dma_mask for full 64 bit mask */
9050         if (dma_set_mask_and_coherent(&ha->pdev->dev, DMA_BIT_MASK(64))) {
9051                 dev_dbg(&ha->pdev->dev,
9052                           "Failed to set 64 bit PCI consistent mask; "
9053                            "using 32 bit.\n");
9054                 dma_set_mask_and_coherent(&ha->pdev->dev, DMA_BIT_MASK(32));
9055         }
9056 }
9057
9058 static int qla4xxx_slave_alloc(struct scsi_device *sdev)
9059 {
9060         struct iscsi_cls_session *cls_sess;
9061         struct iscsi_session *sess;
9062         struct ddb_entry *ddb;
9063         int queue_depth = QL4_DEF_QDEPTH;
9064
9065         cls_sess = starget_to_session(sdev->sdev_target);
9066         sess = cls_sess->dd_data;
9067         ddb = sess->dd_data;
9068
9069         sdev->hostdata = ddb;
9070
9071         if (ql4xmaxqdepth != 0 && ql4xmaxqdepth <= 0xffffU)
9072                 queue_depth = ql4xmaxqdepth;
9073
9074         scsi_change_queue_depth(sdev, queue_depth);
9075         return 0;
9076 }
9077
9078 /**
9079  * qla4xxx_del_from_active_array - returns an active srb
9080  * @ha: Pointer to host adapter structure.
9081  * @index: index into the active_array
9082  *
9083  * This routine removes and returns the srb at the specified index
9084  **/
9085 struct srb *qla4xxx_del_from_active_array(struct scsi_qla_host *ha,
9086     uint32_t index)
9087 {
9088         struct srb *srb = NULL;
9089         struct scsi_cmnd *cmd = NULL;
9090
9091         cmd = scsi_host_find_tag(ha->host, index);
9092         if (!cmd)
9093                 return srb;
9094
9095         srb = (struct srb *)CMD_SP(cmd);
9096         if (!srb)
9097                 return srb;
9098
9099         /* update counters */
9100         if (srb->flags & SRB_DMA_VALID) {
9101                 ha->iocb_cnt -= srb->iocb_cnt;
9102                 if (srb->cmd)
9103                         srb->cmd->host_scribble =
9104                                 (unsigned char *)(unsigned long) MAX_SRBS;
9105         }
9106         return srb;
9107 }
9108
9109 /**
9110  * qla4xxx_eh_wait_on_command - waits for command to be returned by firmware
9111  * @ha: Pointer to host adapter structure.
9112  * @cmd: Scsi Command to wait on.
9113  *
9114  * This routine waits for the command to be returned by the Firmware
9115  * for some max time.
9116  **/
9117 static int qla4xxx_eh_wait_on_command(struct scsi_qla_host *ha,
9118                                       struct scsi_cmnd *cmd)
9119 {
9120         int done = 0;
9121         struct srb *rp;
9122         uint32_t max_wait_time = EH_WAIT_CMD_TOV;
9123         int ret = SUCCESS;
9124
9125         /* Dont wait on command if PCI error is being handled
9126          * by PCI AER driver
9127          */
9128         if (unlikely(pci_channel_offline(ha->pdev)) ||
9129             (test_bit(AF_EEH_BUSY, &ha->flags))) {
9130                 ql4_printk(KERN_WARNING, ha, "scsi%ld: Return from %s\n",
9131                     ha->host_no, __func__);
9132                 return ret;
9133         }
9134
9135         do {
9136                 /* Checking to see if its returned to OS */
9137                 rp = (struct srb *) CMD_SP(cmd);
9138                 if (rp == NULL) {
9139                         done++;
9140                         break;
9141                 }
9142
9143                 msleep(2000);
9144         } while (max_wait_time--);
9145
9146         return done;
9147 }
9148
9149 /**
9150  * qla4xxx_wait_for_hba_online - waits for HBA to come online
9151  * @ha: Pointer to host adapter structure
9152  **/
9153 static int qla4xxx_wait_for_hba_online(struct scsi_qla_host *ha)
9154 {
9155         unsigned long wait_online;
9156
9157         wait_online = jiffies + (HBA_ONLINE_TOV * HZ);
9158         while (time_before(jiffies, wait_online)) {
9159
9160                 if (adapter_up(ha))
9161                         return QLA_SUCCESS;
9162
9163                 msleep(2000);
9164         }
9165
9166         return QLA_ERROR;
9167 }
9168
9169 /**
9170  * qla4xxx_eh_wait_for_commands - wait for active cmds to finish.
9171  * @ha: pointer to HBA
9172  * @stgt: pointer to SCSI target
9173  * @sdev: pointer to SCSI device
9174  *
9175  * This function waits for all outstanding commands to a lun to complete. It
9176  * returns 0 if all pending commands are returned and 1 otherwise.
9177  **/
9178 static int qla4xxx_eh_wait_for_commands(struct scsi_qla_host *ha,
9179                                         struct scsi_target *stgt,
9180                                         struct scsi_device *sdev)
9181 {
9182         int cnt;
9183         int status = 0;
9184         struct scsi_cmnd *cmd;
9185
9186         /*
9187          * Waiting for all commands for the designated target or dev
9188          * in the active array
9189          */
9190         for (cnt = 0; cnt < ha->host->can_queue; cnt++) {
9191                 cmd = scsi_host_find_tag(ha->host, cnt);
9192                 if (cmd && stgt == scsi_target(cmd->device) &&
9193                     (!sdev || sdev == cmd->device)) {
9194                         if (!qla4xxx_eh_wait_on_command(ha, cmd)) {
9195                                 status++;
9196                                 break;
9197                         }
9198                 }
9199         }
9200         return status;
9201 }
9202
9203 /**
9204  * qla4xxx_eh_abort - callback for abort task.
9205  * @cmd: Pointer to Linux's SCSI command structure
9206  *
9207  * This routine is called by the Linux OS to abort the specified
9208  * command.
9209  **/
9210 static int qla4xxx_eh_abort(struct scsi_cmnd *cmd)
9211 {
9212         struct scsi_qla_host *ha = to_qla_host(cmd->device->host);
9213         unsigned int id = cmd->device->id;
9214         uint64_t lun = cmd->device->lun;
9215         unsigned long flags;
9216         struct srb *srb = NULL;
9217         int ret = SUCCESS;
9218         int wait = 0;
9219         int rval;
9220
9221         ql4_printk(KERN_INFO, ha, "scsi%ld:%d:%llu: Abort command issued cmd=%p, cdb=0x%x\n",
9222                    ha->host_no, id, lun, cmd, cmd->cmnd[0]);
9223
9224         rval = qla4xxx_isp_check_reg(ha);
9225         if (rval != QLA_SUCCESS) {
9226                 ql4_printk(KERN_INFO, ha, "PCI/Register disconnect, exiting.\n");
9227                 return FAILED;
9228         }
9229
9230         spin_lock_irqsave(&ha->hardware_lock, flags);
9231         srb = (struct srb *) CMD_SP(cmd);
9232         if (!srb) {
9233                 spin_unlock_irqrestore(&ha->hardware_lock, flags);
9234                 ql4_printk(KERN_INFO, ha, "scsi%ld:%d:%llu: Specified command has already completed.\n",
9235                            ha->host_no, id, lun);
9236                 return SUCCESS;
9237         }
9238         kref_get(&srb->srb_ref);
9239         spin_unlock_irqrestore(&ha->hardware_lock, flags);
9240
9241         if (qla4xxx_abort_task(ha, srb) != QLA_SUCCESS) {
9242                 DEBUG3(printk("scsi%ld:%d:%llu: Abort_task mbx failed.\n",
9243                     ha->host_no, id, lun));
9244                 ret = FAILED;
9245         } else {
9246                 DEBUG3(printk("scsi%ld:%d:%llu: Abort_task mbx success.\n",
9247                     ha->host_no, id, lun));
9248                 wait = 1;
9249         }
9250
9251         kref_put(&srb->srb_ref, qla4xxx_srb_compl);
9252
9253         /* Wait for command to complete */
9254         if (wait) {
9255                 if (!qla4xxx_eh_wait_on_command(ha, cmd)) {
9256                         DEBUG2(printk("scsi%ld:%d:%llu: Abort handler timed out\n",
9257                             ha->host_no, id, lun));
9258                         ret = FAILED;
9259                 }
9260         }
9261
9262         ql4_printk(KERN_INFO, ha,
9263             "scsi%ld:%d:%llu: Abort command - %s\n",
9264             ha->host_no, id, lun, (ret == SUCCESS) ? "succeeded" : "failed");
9265
9266         return ret;
9267 }
9268
9269 /**
9270  * qla4xxx_eh_device_reset - callback for target reset.
9271  * @cmd: Pointer to Linux's SCSI command structure
9272  *
9273  * This routine is called by the Linux OS to reset all luns on the
9274  * specified target.
9275  **/
9276 static int qla4xxx_eh_device_reset(struct scsi_cmnd *cmd)
9277 {
9278         struct scsi_qla_host *ha = to_qla_host(cmd->device->host);
9279         struct ddb_entry *ddb_entry = cmd->device->hostdata;
9280         int ret = FAILED, stat;
9281         int rval;
9282
9283         if (!ddb_entry)
9284                 return ret;
9285
9286         ret = iscsi_block_scsi_eh(cmd);
9287         if (ret)
9288                 return ret;
9289         ret = FAILED;
9290
9291         ql4_printk(KERN_INFO, ha,
9292                    "scsi%ld:%d:%d:%llu: DEVICE RESET ISSUED.\n", ha->host_no,
9293                    cmd->device->channel, cmd->device->id, cmd->device->lun);
9294
9295         DEBUG2(printk(KERN_INFO
9296                       "scsi%ld: DEVICE_RESET cmd=%p jiffies = 0x%lx, to=%x,"
9297                       "dpc_flags=%lx, status=%x allowed=%d\n", ha->host_no,
9298                       cmd, jiffies, cmd->request->timeout / HZ,
9299                       ha->dpc_flags, cmd->result, cmd->allowed));
9300
9301         rval = qla4xxx_isp_check_reg(ha);
9302         if (rval != QLA_SUCCESS) {
9303                 ql4_printk(KERN_INFO, ha, "PCI/Register disconnect, exiting.\n");
9304                 return FAILED;
9305         }
9306
9307         /* FIXME: wait for hba to go online */
9308         stat = qla4xxx_reset_lun(ha, ddb_entry, cmd->device->lun);
9309         if (stat != QLA_SUCCESS) {
9310                 ql4_printk(KERN_INFO, ha, "DEVICE RESET FAILED. %d\n", stat);
9311                 goto eh_dev_reset_done;
9312         }
9313
9314         if (qla4xxx_eh_wait_for_commands(ha, scsi_target(cmd->device),
9315                                          cmd->device)) {
9316                 ql4_printk(KERN_INFO, ha,
9317                            "DEVICE RESET FAILED - waiting for "
9318                            "commands.\n");
9319                 goto eh_dev_reset_done;
9320         }
9321
9322         /* Send marker. */
9323         if (qla4xxx_send_marker_iocb(ha, ddb_entry, cmd->device->lun,
9324                 MM_LUN_RESET) != QLA_SUCCESS)
9325                 goto eh_dev_reset_done;
9326
9327         ql4_printk(KERN_INFO, ha,
9328                    "scsi(%ld:%d:%d:%llu): DEVICE RESET SUCCEEDED.\n",
9329                    ha->host_no, cmd->device->channel, cmd->device->id,
9330                    cmd->device->lun);
9331
9332         ret = SUCCESS;
9333
9334 eh_dev_reset_done:
9335
9336         return ret;
9337 }
9338
9339 /**
9340  * qla4xxx_eh_target_reset - callback for target reset.
9341  * @cmd: Pointer to Linux's SCSI command structure
9342  *
9343  * This routine is called by the Linux OS to reset the target.
9344  **/
9345 static int qla4xxx_eh_target_reset(struct scsi_cmnd *cmd)
9346 {
9347         struct scsi_qla_host *ha = to_qla_host(cmd->device->host);
9348         struct ddb_entry *ddb_entry = cmd->device->hostdata;
9349         int stat, ret;
9350         int rval;
9351
9352         if (!ddb_entry)
9353                 return FAILED;
9354
9355         ret = iscsi_block_scsi_eh(cmd);
9356         if (ret)
9357                 return ret;
9358
9359         starget_printk(KERN_INFO, scsi_target(cmd->device),
9360                        "WARM TARGET RESET ISSUED.\n");
9361
9362         DEBUG2(printk(KERN_INFO
9363                       "scsi%ld: TARGET_DEVICE_RESET cmd=%p jiffies = 0x%lx, "
9364                       "to=%x,dpc_flags=%lx, status=%x allowed=%d\n",
9365                       ha->host_no, cmd, jiffies, cmd->request->timeout / HZ,
9366                       ha->dpc_flags, cmd->result, cmd->allowed));
9367
9368         rval = qla4xxx_isp_check_reg(ha);
9369         if (rval != QLA_SUCCESS) {
9370                 ql4_printk(KERN_INFO, ha, "PCI/Register disconnect, exiting.\n");
9371                 return FAILED;
9372         }
9373
9374         stat = qla4xxx_reset_target(ha, ddb_entry);
9375         if (stat != QLA_SUCCESS) {
9376                 starget_printk(KERN_INFO, scsi_target(cmd->device),
9377                                "WARM TARGET RESET FAILED.\n");
9378                 return FAILED;
9379         }
9380
9381         if (qla4xxx_eh_wait_for_commands(ha, scsi_target(cmd->device),
9382                                          NULL)) {
9383                 starget_printk(KERN_INFO, scsi_target(cmd->device),
9384                                "WARM TARGET DEVICE RESET FAILED - "
9385                                "waiting for commands.\n");
9386                 return FAILED;
9387         }
9388
9389         /* Send marker. */
9390         if (qla4xxx_send_marker_iocb(ha, ddb_entry, cmd->device->lun,
9391                 MM_TGT_WARM_RESET) != QLA_SUCCESS) {
9392                 starget_printk(KERN_INFO, scsi_target(cmd->device),
9393                                "WARM TARGET DEVICE RESET FAILED - "
9394                                "marker iocb failed.\n");
9395                 return FAILED;
9396         }
9397
9398         starget_printk(KERN_INFO, scsi_target(cmd->device),
9399                        "WARM TARGET RESET SUCCEEDED.\n");
9400         return SUCCESS;
9401 }
9402
9403 /**
9404  * qla4xxx_is_eh_active - check if error handler is running
9405  * @shost: Pointer to SCSI Host struct
9406  *
9407  * This routine finds that if reset host is called in EH
9408  * scenario or from some application like sg_reset
9409  **/
9410 static int qla4xxx_is_eh_active(struct Scsi_Host *shost)
9411 {
9412         if (shost->shost_state == SHOST_RECOVERY)
9413                 return 1;
9414         return 0;
9415 }
9416
9417 /**
9418  * qla4xxx_eh_host_reset - kernel callback
9419  * @cmd: Pointer to Linux's SCSI command structure
9420  *
9421  * This routine is invoked by the Linux kernel to perform fatal error
9422  * recovery on the specified adapter.
9423  **/
9424 static int qla4xxx_eh_host_reset(struct scsi_cmnd *cmd)
9425 {
9426         int return_status = FAILED;
9427         struct scsi_qla_host *ha;
9428         int rval;
9429
9430         ha = to_qla_host(cmd->device->host);
9431
9432         rval = qla4xxx_isp_check_reg(ha);
9433         if (rval != QLA_SUCCESS) {
9434                 ql4_printk(KERN_INFO, ha, "PCI/Register disconnect, exiting.\n");
9435                 return FAILED;
9436         }
9437
9438         if ((is_qla8032(ha) || is_qla8042(ha)) && ql4xdontresethba)
9439                 qla4_83xx_set_idc_dontreset(ha);
9440
9441         /*
9442          * For ISP8324 and ISP8042, if IDC_CTRL DONTRESET_BIT0 is set by other
9443          * protocol drivers, we should not set device_state to NEED_RESET
9444          */
9445         if (ql4xdontresethba ||
9446             ((is_qla8032(ha) || is_qla8042(ha)) &&
9447              qla4_83xx_idc_dontreset(ha))) {
9448                 DEBUG2(printk("scsi%ld: %s: Don't Reset HBA\n",
9449                      ha->host_no, __func__));
9450
9451                 /* Clear outstanding srb in queues */
9452                 if (qla4xxx_is_eh_active(cmd->device->host))
9453                         qla4xxx_abort_active_cmds(ha, DID_ABORT << 16);
9454
9455                 return FAILED;
9456         }
9457
9458         ql4_printk(KERN_INFO, ha,
9459                    "scsi(%ld:%d:%d:%llu): HOST RESET ISSUED.\n", ha->host_no,
9460                    cmd->device->channel, cmd->device->id, cmd->device->lun);
9461
9462         if (qla4xxx_wait_for_hba_online(ha) != QLA_SUCCESS) {
9463                 DEBUG2(printk("scsi%ld:%d: %s: Unable to reset host.  Adapter "
9464                               "DEAD.\n", ha->host_no, cmd->device->channel,
9465                               __func__));
9466
9467                 return FAILED;
9468         }
9469
9470         if (!test_bit(DPC_RESET_HA, &ha->dpc_flags)) {
9471                 if (is_qla80XX(ha))
9472                         set_bit(DPC_RESET_HA_FW_CONTEXT, &ha->dpc_flags);
9473                 else
9474                         set_bit(DPC_RESET_HA, &ha->dpc_flags);
9475         }
9476
9477         if (qla4xxx_recover_adapter(ha) == QLA_SUCCESS)
9478                 return_status = SUCCESS;
9479
9480         ql4_printk(KERN_INFO, ha, "HOST RESET %s.\n",
9481                    return_status == FAILED ? "FAILED" : "SUCCEEDED");
9482
9483         return return_status;
9484 }
9485
9486 static int qla4xxx_context_reset(struct scsi_qla_host *ha)
9487 {
9488         uint32_t mbox_cmd[MBOX_REG_COUNT];
9489         uint32_t mbox_sts[MBOX_REG_COUNT];
9490         struct addr_ctrl_blk_def *acb = NULL;
9491         uint32_t acb_len = sizeof(struct addr_ctrl_blk_def);
9492         int rval = QLA_SUCCESS;
9493         dma_addr_t acb_dma;
9494
9495         acb = dma_alloc_coherent(&ha->pdev->dev,
9496                                  sizeof(struct addr_ctrl_blk_def),
9497                                  &acb_dma, GFP_KERNEL);
9498         if (!acb) {
9499                 ql4_printk(KERN_ERR, ha, "%s: Unable to alloc acb\n",
9500                            __func__);
9501                 rval = -ENOMEM;
9502                 goto exit_port_reset;
9503         }
9504
9505         memset(acb, 0, acb_len);
9506
9507         rval = qla4xxx_get_acb(ha, acb_dma, PRIMARI_ACB, acb_len);
9508         if (rval != QLA_SUCCESS) {
9509                 rval = -EIO;
9510                 goto exit_free_acb;
9511         }
9512
9513         rval = qla4xxx_disable_acb(ha);
9514         if (rval != QLA_SUCCESS) {
9515                 rval = -EIO;
9516                 goto exit_free_acb;
9517         }
9518
9519         wait_for_completion_timeout(&ha->disable_acb_comp,
9520                                     DISABLE_ACB_TOV * HZ);
9521
9522         rval = qla4xxx_set_acb(ha, &mbox_cmd[0], &mbox_sts[0], acb_dma);
9523         if (rval != QLA_SUCCESS) {
9524                 rval = -EIO;
9525                 goto exit_free_acb;
9526         }
9527
9528 exit_free_acb:
9529         dma_free_coherent(&ha->pdev->dev, sizeof(struct addr_ctrl_blk_def),
9530                           acb, acb_dma);
9531 exit_port_reset:
9532         DEBUG2(ql4_printk(KERN_INFO, ha, "%s %s\n", __func__,
9533                           rval == QLA_SUCCESS ? "SUCCEEDED" : "FAILED"));
9534         return rval;
9535 }
9536
9537 static int qla4xxx_host_reset(struct Scsi_Host *shost, int reset_type)
9538 {
9539         struct scsi_qla_host *ha = to_qla_host(shost);
9540         int rval = QLA_SUCCESS;
9541         uint32_t idc_ctrl;
9542
9543         if (ql4xdontresethba) {
9544                 DEBUG2(ql4_printk(KERN_INFO, ha, "%s: Don't Reset HBA\n",
9545                                   __func__));
9546                 rval = -EPERM;
9547                 goto exit_host_reset;
9548         }
9549
9550         if (test_bit(DPC_RESET_HA, &ha->dpc_flags))
9551                 goto recover_adapter;
9552
9553         switch (reset_type) {
9554         case SCSI_ADAPTER_RESET:
9555                 set_bit(DPC_RESET_HA, &ha->dpc_flags);
9556                 break;
9557         case SCSI_FIRMWARE_RESET:
9558                 if (!test_bit(DPC_RESET_HA, &ha->dpc_flags)) {
9559                         if (is_qla80XX(ha))
9560                                 /* set firmware context reset */
9561                                 set_bit(DPC_RESET_HA_FW_CONTEXT,
9562                                         &ha->dpc_flags);
9563                         else {
9564                                 rval = qla4xxx_context_reset(ha);
9565                                 goto exit_host_reset;
9566                         }
9567                 }
9568                 break;
9569         }
9570
9571 recover_adapter:
9572         /* For ISP8324 and ISP8042 set graceful reset bit in IDC_DRV_CTRL if
9573          * reset is issued by application */
9574         if ((is_qla8032(ha) || is_qla8042(ha)) &&
9575             test_bit(DPC_RESET_HA, &ha->dpc_flags)) {
9576                 idc_ctrl = qla4_83xx_rd_reg(ha, QLA83XX_IDC_DRV_CTRL);
9577                 qla4_83xx_wr_reg(ha, QLA83XX_IDC_DRV_CTRL,
9578                                  (idc_ctrl | GRACEFUL_RESET_BIT1));
9579         }
9580
9581         rval = qla4xxx_recover_adapter(ha);
9582         if (rval != QLA_SUCCESS) {
9583                 DEBUG2(ql4_printk(KERN_INFO, ha, "%s: recover adapter fail\n",
9584                                   __func__));
9585                 rval = -EIO;
9586         }
9587
9588 exit_host_reset:
9589         return rval;
9590 }
9591
9592 /* PCI AER driver recovers from all correctable errors w/o
9593  * driver intervention. For uncorrectable errors PCI AER
9594  * driver calls the following device driver's callbacks
9595  *
9596  * - Fatal Errors - link_reset
9597  * - Non-Fatal Errors - driver's error_detected() which
9598  * returns CAN_RECOVER, NEED_RESET or DISCONNECT.
9599  *
9600  * PCI AER driver calls
9601  * CAN_RECOVER - driver's mmio_enabled(), mmio_enabled()
9602  *               returns RECOVERED or NEED_RESET if fw_hung
9603  * NEED_RESET - driver's slot_reset()
9604  * DISCONNECT - device is dead & cannot recover
9605  * RECOVERED - driver's resume()
9606  */
9607 static pci_ers_result_t
9608 qla4xxx_pci_error_detected(struct pci_dev *pdev, pci_channel_state_t state)
9609 {
9610         struct scsi_qla_host *ha = pci_get_drvdata(pdev);
9611
9612         ql4_printk(KERN_WARNING, ha, "scsi%ld: %s: error detected:state %x\n",
9613             ha->host_no, __func__, state);
9614
9615         if (!is_aer_supported(ha))
9616                 return PCI_ERS_RESULT_NONE;
9617
9618         switch (state) {
9619         case pci_channel_io_normal:
9620                 clear_bit(AF_EEH_BUSY, &ha->flags);
9621                 return PCI_ERS_RESULT_CAN_RECOVER;
9622         case pci_channel_io_frozen:
9623                 set_bit(AF_EEH_BUSY, &ha->flags);
9624                 qla4xxx_mailbox_premature_completion(ha);
9625                 qla4xxx_free_irqs(ha);
9626                 pci_disable_device(pdev);
9627                 /* Return back all IOs */
9628                 qla4xxx_abort_active_cmds(ha, DID_RESET << 16);
9629                 return PCI_ERS_RESULT_NEED_RESET;
9630         case pci_channel_io_perm_failure:
9631                 set_bit(AF_EEH_BUSY, &ha->flags);
9632                 set_bit(AF_PCI_CHANNEL_IO_PERM_FAILURE, &ha->flags);
9633                 qla4xxx_abort_active_cmds(ha, DID_NO_CONNECT << 16);
9634                 return PCI_ERS_RESULT_DISCONNECT;
9635         }
9636         return PCI_ERS_RESULT_NEED_RESET;
9637 }
9638
9639 /**
9640  * qla4xxx_pci_mmio_enabled() gets called if
9641  * qla4xxx_pci_error_detected() returns PCI_ERS_RESULT_CAN_RECOVER
9642  * and read/write to the device still works.
9643  * @pdev: PCI device pointer
9644  **/
9645 static pci_ers_result_t
9646 qla4xxx_pci_mmio_enabled(struct pci_dev *pdev)
9647 {
9648         struct scsi_qla_host *ha = pci_get_drvdata(pdev);
9649
9650         if (!is_aer_supported(ha))
9651                 return PCI_ERS_RESULT_NONE;
9652
9653         return PCI_ERS_RESULT_RECOVERED;
9654 }
9655
9656 static uint32_t qla4_8xxx_error_recovery(struct scsi_qla_host *ha)
9657 {
9658         uint32_t rval = QLA_ERROR;
9659         int fn;
9660         struct pci_dev *other_pdev = NULL;
9661
9662         ql4_printk(KERN_WARNING, ha, "scsi%ld: In %s\n", ha->host_no, __func__);
9663
9664         set_bit(DPC_RESET_ACTIVE, &ha->dpc_flags);
9665
9666         if (test_bit(AF_ONLINE, &ha->flags)) {
9667                 clear_bit(AF_ONLINE, &ha->flags);
9668                 clear_bit(AF_LINK_UP, &ha->flags);
9669                 iscsi_host_for_each_session(ha->host, qla4xxx_fail_session);
9670                 qla4xxx_process_aen(ha, FLUSH_DDB_CHANGED_AENS);
9671         }
9672
9673         fn = PCI_FUNC(ha->pdev->devfn);
9674         if (is_qla8022(ha)) {
9675                 while (fn > 0) {
9676                         fn--;
9677                         ql4_printk(KERN_INFO, ha, "scsi%ld: %s: Finding PCI device at func %x\n",
9678                                    ha->host_no, __func__, fn);
9679                         /* Get the pci device given the domain, bus,
9680                          * slot/function number */
9681                         other_pdev = pci_get_domain_bus_and_slot(
9682                                            pci_domain_nr(ha->pdev->bus),
9683                                            ha->pdev->bus->number,
9684                                            PCI_DEVFN(PCI_SLOT(ha->pdev->devfn),
9685                                            fn));
9686
9687                         if (!other_pdev)
9688                                 continue;
9689
9690                         if (atomic_read(&other_pdev->enable_cnt)) {
9691                                 ql4_printk(KERN_INFO, ha, "scsi%ld: %s: Found PCI func in enabled state%x\n",
9692                                            ha->host_no, __func__, fn);
9693                                 pci_dev_put(other_pdev);
9694                                 break;
9695                         }
9696                         pci_dev_put(other_pdev);
9697                 }
9698         } else {
9699                 /* this case is meant for ISP83xx/ISP84xx only */
9700                 if (qla4_83xx_can_perform_reset(ha)) {
9701                         /* reset fn as iSCSI is going to perform the reset */
9702                         fn = 0;
9703                 }
9704         }
9705
9706         /* The first function on the card, the reset owner will
9707          * start & initialize the firmware. The other functions
9708          * on the card will reset the firmware context
9709          */
9710         if (!fn) {
9711                 ql4_printk(KERN_INFO, ha, "scsi%ld: %s: devfn being reset "
9712                     "0x%x is the owner\n", ha->host_no, __func__,
9713                     ha->pdev->devfn);
9714
9715                 ha->isp_ops->idc_lock(ha);
9716                 qla4_8xxx_wr_direct(ha, QLA8XXX_CRB_DEV_STATE,
9717                                     QLA8XXX_DEV_COLD);
9718                 ha->isp_ops->idc_unlock(ha);
9719
9720                 rval = qla4_8xxx_update_idc_reg(ha);
9721                 if (rval == QLA_ERROR) {
9722                         ql4_printk(KERN_INFO, ha, "scsi%ld: %s: HW State: FAILED\n",
9723                                    ha->host_no, __func__);
9724                         ha->isp_ops->idc_lock(ha);
9725                         qla4_8xxx_wr_direct(ha, QLA8XXX_CRB_DEV_STATE,
9726                                             QLA8XXX_DEV_FAILED);
9727                         ha->isp_ops->idc_unlock(ha);
9728                         goto exit_error_recovery;
9729                 }
9730
9731                 clear_bit(AF_FW_RECOVERY, &ha->flags);
9732                 rval = qla4xxx_initialize_adapter(ha, RESET_ADAPTER);
9733
9734                 if (rval != QLA_SUCCESS) {
9735                         ql4_printk(KERN_INFO, ha, "scsi%ld: %s: HW State: "
9736                             "FAILED\n", ha->host_no, __func__);
9737                         qla4xxx_free_irqs(ha);
9738                         ha->isp_ops->idc_lock(ha);
9739                         qla4_8xxx_clear_drv_active(ha);
9740                         qla4_8xxx_wr_direct(ha, QLA8XXX_CRB_DEV_STATE,
9741                                             QLA8XXX_DEV_FAILED);
9742                         ha->isp_ops->idc_unlock(ha);
9743                 } else {
9744                         ql4_printk(KERN_INFO, ha, "scsi%ld: %s: HW State: "
9745                             "READY\n", ha->host_no, __func__);
9746                         ha->isp_ops->idc_lock(ha);
9747                         qla4_8xxx_wr_direct(ha, QLA8XXX_CRB_DEV_STATE,
9748                                             QLA8XXX_DEV_READY);
9749                         /* Clear driver state register */
9750                         qla4_8xxx_wr_direct(ha, QLA8XXX_CRB_DRV_STATE, 0);
9751                         qla4_8xxx_set_drv_active(ha);
9752                         ha->isp_ops->idc_unlock(ha);
9753                         ha->isp_ops->enable_intrs(ha);
9754                 }
9755         } else {
9756                 ql4_printk(KERN_INFO, ha, "scsi%ld: %s: devfn 0x%x is not "
9757                     "the reset owner\n", ha->host_no, __func__,
9758                     ha->pdev->devfn);
9759                 if ((qla4_8xxx_rd_direct(ha, QLA8XXX_CRB_DEV_STATE) ==
9760                      QLA8XXX_DEV_READY)) {
9761                         clear_bit(AF_FW_RECOVERY, &ha->flags);
9762                         rval = qla4xxx_initialize_adapter(ha, RESET_ADAPTER);
9763                         if (rval == QLA_SUCCESS)
9764                                 ha->isp_ops->enable_intrs(ha);
9765                         else
9766                                 qla4xxx_free_irqs(ha);
9767
9768                         ha->isp_ops->idc_lock(ha);
9769                         qla4_8xxx_set_drv_active(ha);
9770                         ha->isp_ops->idc_unlock(ha);
9771                 }
9772         }
9773 exit_error_recovery:
9774         clear_bit(DPC_RESET_ACTIVE, &ha->dpc_flags);
9775         return rval;
9776 }
9777
9778 static pci_ers_result_t
9779 qla4xxx_pci_slot_reset(struct pci_dev *pdev)
9780 {
9781         pci_ers_result_t ret = PCI_ERS_RESULT_DISCONNECT;
9782         struct scsi_qla_host *ha = pci_get_drvdata(pdev);
9783         int rc;
9784
9785         ql4_printk(KERN_WARNING, ha, "scsi%ld: %s: slot_reset\n",
9786             ha->host_no, __func__);
9787
9788         if (!is_aer_supported(ha))
9789                 return PCI_ERS_RESULT_NONE;
9790
9791         /* Restore the saved state of PCIe device -
9792          * BAR registers, PCI Config space, PCIX, MSI,
9793          * IOV states
9794          */
9795         pci_restore_state(pdev);
9796
9797         /* pci_restore_state() clears the saved_state flag of the device
9798          * save restored state which resets saved_state flag
9799          */
9800         pci_save_state(pdev);
9801
9802         /* Initialize device or resume if in suspended state */
9803         rc = pci_enable_device(pdev);
9804         if (rc) {
9805                 ql4_printk(KERN_WARNING, ha, "scsi%ld: %s: Can't re-enable "
9806                     "device after reset\n", ha->host_no, __func__);
9807                 goto exit_slot_reset;
9808         }
9809
9810         ha->isp_ops->disable_intrs(ha);
9811
9812         if (is_qla80XX(ha)) {
9813                 if (qla4_8xxx_error_recovery(ha) == QLA_SUCCESS) {
9814                         ret = PCI_ERS_RESULT_RECOVERED;
9815                         goto exit_slot_reset;
9816                 } else
9817                         goto exit_slot_reset;
9818         }
9819
9820 exit_slot_reset:
9821         ql4_printk(KERN_WARNING, ha, "scsi%ld: %s: Return=%x\n"
9822             "device after reset\n", ha->host_no, __func__, ret);
9823         return ret;
9824 }
9825
9826 static void
9827 qla4xxx_pci_resume(struct pci_dev *pdev)
9828 {
9829         struct scsi_qla_host *ha = pci_get_drvdata(pdev);
9830         int ret;
9831
9832         ql4_printk(KERN_WARNING, ha, "scsi%ld: %s: pci_resume\n",
9833             ha->host_no, __func__);
9834
9835         ret = qla4xxx_wait_for_hba_online(ha);
9836         if (ret != QLA_SUCCESS) {
9837                 ql4_printk(KERN_ERR, ha, "scsi%ld: %s: the device failed to "
9838                     "resume I/O from slot/link_reset\n", ha->host_no,
9839                      __func__);
9840         }
9841
9842         clear_bit(AF_EEH_BUSY, &ha->flags);
9843 }
9844
9845 static const struct pci_error_handlers qla4xxx_err_handler = {
9846         .error_detected = qla4xxx_pci_error_detected,
9847         .mmio_enabled = qla4xxx_pci_mmio_enabled,
9848         .slot_reset = qla4xxx_pci_slot_reset,
9849         .resume = qla4xxx_pci_resume,
9850 };
9851
9852 static struct pci_device_id qla4xxx_pci_tbl[] = {
9853         {
9854                 .vendor         = PCI_VENDOR_ID_QLOGIC,
9855                 .device         = PCI_DEVICE_ID_QLOGIC_ISP4010,
9856                 .subvendor      = PCI_ANY_ID,
9857                 .subdevice      = PCI_ANY_ID,
9858         },
9859         {
9860                 .vendor         = PCI_VENDOR_ID_QLOGIC,
9861                 .device         = PCI_DEVICE_ID_QLOGIC_ISP4022,
9862                 .subvendor      = PCI_ANY_ID,
9863                 .subdevice      = PCI_ANY_ID,
9864         },
9865         {
9866                 .vendor         = PCI_VENDOR_ID_QLOGIC,
9867                 .device         = PCI_DEVICE_ID_QLOGIC_ISP4032,
9868                 .subvendor      = PCI_ANY_ID,
9869                 .subdevice      = PCI_ANY_ID,
9870         },
9871         {
9872                 .vendor         = PCI_VENDOR_ID_QLOGIC,
9873                 .device         = PCI_DEVICE_ID_QLOGIC_ISP8022,
9874                 .subvendor      = PCI_ANY_ID,
9875                 .subdevice      = PCI_ANY_ID,
9876         },
9877         {
9878                 .vendor         = PCI_VENDOR_ID_QLOGIC,
9879                 .device         = PCI_DEVICE_ID_QLOGIC_ISP8324,
9880                 .subvendor      = PCI_ANY_ID,
9881                 .subdevice      = PCI_ANY_ID,
9882         },
9883         {
9884                 .vendor         = PCI_VENDOR_ID_QLOGIC,
9885                 .device         = PCI_DEVICE_ID_QLOGIC_ISP8042,
9886                 .subvendor      = PCI_ANY_ID,
9887                 .subdevice      = PCI_ANY_ID,
9888         },
9889         {0, 0},
9890 };
9891 MODULE_DEVICE_TABLE(pci, qla4xxx_pci_tbl);
9892
9893 static struct pci_driver qla4xxx_pci_driver = {
9894         .name           = DRIVER_NAME,
9895         .id_table       = qla4xxx_pci_tbl,
9896         .probe          = qla4xxx_probe_adapter,
9897         .remove         = qla4xxx_remove_adapter,
9898         .err_handler = &qla4xxx_err_handler,
9899 };
9900
9901 static int __init qla4xxx_module_init(void)
9902 {
9903         int ret;
9904
9905         if (ql4xqfulltracking)
9906                 qla4xxx_driver_template.track_queue_depth = 1;
9907
9908         /* Allocate cache for SRBs. */
9909         srb_cachep = kmem_cache_create("qla4xxx_srbs", sizeof(struct srb), 0,
9910                                        SLAB_HWCACHE_ALIGN, NULL);
9911         if (srb_cachep == NULL) {
9912                 printk(KERN_ERR
9913                        "%s: Unable to allocate SRB cache..."
9914                        "Failing load!\n", DRIVER_NAME);
9915                 ret = -ENOMEM;
9916                 goto no_srp_cache;
9917         }
9918
9919         /* Derive version string. */
9920         strcpy(qla4xxx_version_str, QLA4XXX_DRIVER_VERSION);
9921         if (ql4xextended_error_logging)
9922                 strcat(qla4xxx_version_str, "-debug");
9923
9924         qla4xxx_scsi_transport =
9925                 iscsi_register_transport(&qla4xxx_iscsi_transport);
9926         if (!qla4xxx_scsi_transport){
9927                 ret = -ENODEV;
9928                 goto release_srb_cache;
9929         }
9930
9931         ret = pci_register_driver(&qla4xxx_pci_driver);
9932         if (ret)
9933                 goto unregister_transport;
9934
9935         printk(KERN_INFO "QLogic iSCSI HBA Driver\n");
9936         return 0;
9937
9938 unregister_transport:
9939         iscsi_unregister_transport(&qla4xxx_iscsi_transport);
9940 release_srb_cache:
9941         kmem_cache_destroy(srb_cachep);
9942 no_srp_cache:
9943         return ret;
9944 }
9945
9946 static void __exit qla4xxx_module_exit(void)
9947 {
9948         pci_unregister_driver(&qla4xxx_pci_driver);
9949         iscsi_unregister_transport(&qla4xxx_iscsi_transport);
9950         kmem_cache_destroy(srb_cachep);
9951 }
9952
9953 module_init(qla4xxx_module_init);
9954 module_exit(qla4xxx_module_exit);
9955
9956 MODULE_AUTHOR("QLogic Corporation");
9957 MODULE_DESCRIPTION("QLogic iSCSI HBA Driver");
9958 MODULE_LICENSE("GPL");
9959 MODULE_VERSION(QLA4XXX_DRIVER_VERSION);