drivers/scsi/qla4xxx/ql4_os.c

   1 // SPDX-License-Identifier: GPL-2.0-only
   2 /*
   3  * QLogic iSCSI HBA Driver
   4  * Copyright (c)  2003-2013 QLogic Corporation
   5  */
   6 #include <linux/moduleparam.h>
   7 #include <linux/slab.h>
   8 #include <linux/blkdev.h>
   9 #include <linux/iscsi_boot_sysfs.h>
  10 #include <linux/inet.h>
  11
  12 #include <scsi/scsi_tcq.h>
  13 #include <scsi/scsicam.h>
  14
  15 #include "ql4_def.h"
  16 #include "ql4_version.h"
  17 #include "ql4_glbl.h"
  18 #include "ql4_dbg.h"
  19 #include "ql4_inline.h"
  20 #include "ql4_83xx.h"
  21
  22 /*
  23  * Driver version
  24  */
  25 static char qla4xxx_version_str[40];
  26
  27 /*
  28  * SRB allocation cache
  29  */
  30 static struct kmem_cache *srb_cachep;
  31
  32 /*
  33  * Module parameter information and variables
  34  */
  35 static int ql4xdisablesysfsboot = 1;
  36 module_param(ql4xdisablesysfsboot, int, S_IRUGO | S_IWUSR);
  37 MODULE_PARM_DESC(ql4xdisablesysfsboot,
  38                  " Set to disable exporting boot targets to sysfs.\n"
  39                  "\t\t  0 - Export boot targets\n"
  40                  "\t\t  1 - Do not export boot targets (Default)");
  41
  42 int ql4xdontresethba;
  43 module_param(ql4xdontresethba, int, S_IRUGO | S_IWUSR);
  44 MODULE_PARM_DESC(ql4xdontresethba,
  45                  " Don't reset the HBA for driver recovery.\n"
  46                  "\t\t  0 - It will reset HBA (Default)\n"
  47                  "\t\t  1 - It will NOT reset HBA");
  48
  49 int ql4xextended_error_logging;
  50 module_param(ql4xextended_error_logging, int, S_IRUGO | S_IWUSR);
  51 MODULE_PARM_DESC(ql4xextended_error_logging,
  52                  " Option to enable extended error logging.\n"
  53                  "\t\t  0 - no logging (Default)\n"
  54                  "\t\t  2 - debug logging");
  55
  56 int ql4xenablemsix = 1;
  57 module_param(ql4xenablemsix, int, S_IRUGO|S_IWUSR);
  58 MODULE_PARM_DESC(ql4xenablemsix,
  59                  " Set to enable MSI or MSI-X interrupt mechanism.\n"
  60                  "\t\t  0 = enable INTx interrupt mechanism.\n"
  61                  "\t\t  1 = enable MSI-X interrupt mechanism (Default).\n"
  62                  "\t\t  2 = enable MSI interrupt mechanism.");
  63
  64 #define QL4_DEF_QDEPTH 32
  65 static int ql4xmaxqdepth = QL4_DEF_QDEPTH;
  66 module_param(ql4xmaxqdepth, int, S_IRUGO | S_IWUSR);
  67 MODULE_PARM_DESC(ql4xmaxqdepth,
  68                  " Maximum queue depth to report for target devices.\n"
  69                  "\t\t  Default: 32.");
  70
  71 static int ql4xqfulltracking = 1;
  72 module_param(ql4xqfulltracking, int, S_IRUGO | S_IWUSR);
  73 MODULE_PARM_DESC(ql4xqfulltracking,
  74                  " Enable or disable dynamic tracking and adjustment of\n"
  75                  "\t\t scsi device queue depth.\n"
  76                  "\t\t  0 - Disable.\n"
  77                  "\t\t  1 - Enable. (Default)");
  78
  79 static int ql4xsess_recovery_tmo = QL4_SESS_RECOVERY_TMO;
  80 module_param(ql4xsess_recovery_tmo, int, S_IRUGO);
  81 MODULE_PARM_DESC(ql4xsess_recovery_tmo,
  82                 " Target Session Recovery Timeout.\n"
  83                 "\t\t  Default: 120 sec.");
  84
  85 int ql4xmdcapmask = 0;
  86 module_param(ql4xmdcapmask, int, S_IRUGO);
  87 MODULE_PARM_DESC(ql4xmdcapmask,
  88                  " Set the Minidump driver capture mask level.\n"
  89                  "\t\t  Default is 0 (firmware default capture mask)\n"
  90                  "\t\t  Can be set to 0x3, 0x7, 0xF, 0x1F, 0x3F, 0x7F, 0xFF");
  91
  92 int ql4xenablemd = 1;
  93 module_param(ql4xenablemd, int, S_IRUGO | S_IWUSR);
  94 MODULE_PARM_DESC(ql4xenablemd,
  95                  " Set to enable minidump.\n"
  96                  "\t\t  0 - disable minidump\n"
  97                  "\t\t  1 - enable minidump (Default)");
  98
  99 static int qla4xxx_wait_for_hba_online(struct scsi_qla_host *ha);
 100 /*
 101  * SCSI host template entry points
 102  */
 103 static void qla4xxx_config_dma_addressing(struct scsi_qla_host *ha);
 104
 105 /*
 106  * iSCSI template entry points
 107  */
 108 static int qla4xxx_session_get_param(struct iscsi_cls_session *cls_sess,
 109                                      enum iscsi_param param, char *buf);
 110 static int qla4xxx_conn_get_param(struct iscsi_cls_conn *conn,
 111                                   enum iscsi_param param, char *buf);
 112 static int qla4xxx_host_get_param(struct Scsi_Host *shost,
 113                                   enum iscsi_host_param param, char *buf);
 114 static int qla4xxx_iface_set_param(struct Scsi_Host *shost, void *data,
 115                                    uint32_t len);
 116 static int qla4xxx_get_iface_param(struct iscsi_iface *iface,
 117                                    enum iscsi_param_type param_type,
 118                                    int param, char *buf);
 119 static enum blk_eh_timer_return qla4xxx_eh_cmd_timed_out(struct scsi_cmnd *sc);
 120 static struct iscsi_endpoint *qla4xxx_ep_connect(struct Scsi_Host *shost,
 121                                                  struct sockaddr *dst_addr,
 122                                                  int non_blocking);
 123 static int qla4xxx_ep_poll(struct iscsi_endpoint *ep, int timeout_ms);
 124 static void qla4xxx_ep_disconnect(struct iscsi_endpoint *ep);
 125 static int qla4xxx_get_ep_param(struct iscsi_endpoint *ep,
 126                                 enum iscsi_param param, char *buf);
 127 static int qla4xxx_conn_start(struct iscsi_cls_conn *conn);
 128 static struct iscsi_cls_conn *
 129 qla4xxx_conn_create(struct iscsi_cls_session *cls_sess, uint32_t conn_idx);
 130 static int qla4xxx_conn_bind(struct iscsi_cls_session *cls_session,
 131                              struct iscsi_cls_conn *cls_conn,
 132                              uint64_t transport_fd, int is_leading);
 133 static void qla4xxx_conn_destroy(struct iscsi_cls_conn *conn);
 134 static struct iscsi_cls_session *
 135 qla4xxx_session_create(struct iscsi_endpoint *ep, uint16_t cmds_max,
 136                         uint16_t qdepth, uint32_t initial_cmdsn);
 137 static void qla4xxx_session_destroy(struct iscsi_cls_session *sess);
 138 static void qla4xxx_task_work(struct work_struct *wdata);
 139 static int qla4xxx_alloc_pdu(struct iscsi_task *, uint8_t);
 140 static int qla4xxx_task_xmit(struct iscsi_task *);
 141 static void qla4xxx_task_cleanup(struct iscsi_task *);
 142 static void qla4xxx_fail_session(struct iscsi_cls_session *cls_session);
 143 static void qla4xxx_conn_get_stats(struct iscsi_cls_conn *cls_conn,
 144                                    struct iscsi_stats *stats);
 145 static int qla4xxx_send_ping(struct Scsi_Host *shost, uint32_t iface_num,
 146                              uint32_t iface_type, uint32_t payload_size,
 147                              uint32_t pid, struct sockaddr *dst_addr);
 148 static int qla4xxx_get_chap_list(struct Scsi_Host *shost, uint16_t chap_tbl_idx,
 149                                  uint32_t *num_entries, char *buf);
 150 static int qla4xxx_delete_chap(struct Scsi_Host *shost, uint16_t chap_tbl_idx);
 151 static int qla4xxx_set_chap_entry(struct Scsi_Host *shost, void  *data,
 152                                   int len);
 153 static int qla4xxx_get_host_stats(struct Scsi_Host *shost, char *buf, int len);
 154
 155 /*
 156  * SCSI host template entry points
 157  */
 158 static int qla4xxx_queuecommand(struct Scsi_Host *h, struct scsi_cmnd *cmd);
 159 static int qla4xxx_eh_abort(struct scsi_cmnd *cmd);
 160 static int qla4xxx_eh_device_reset(struct scsi_cmnd *cmd);
 161 static int qla4xxx_eh_target_reset(struct scsi_cmnd *cmd);
 162 static int qla4xxx_eh_host_reset(struct scsi_cmnd *cmd);
 163 static int qla4xxx_slave_alloc(struct scsi_device *device);
 164 static umode_t qla4_attr_is_visible(int param_type, int param);
 165 static int qla4xxx_host_reset(struct Scsi_Host *shost, int reset_type);
 166
 167 /*
 168  * iSCSI Flash DDB sysfs entry points
 169  */
 170 static int
 171 qla4xxx_sysfs_ddb_set_param(struct iscsi_bus_flash_session *fnode_sess,
 172                             struct iscsi_bus_flash_conn *fnode_conn,
 173                             void *data, int len);
 174 static int
 175 qla4xxx_sysfs_ddb_get_param(struct iscsi_bus_flash_session *fnode_sess,
 176                             int param, char *buf);
 177 static int qla4xxx_sysfs_ddb_add(struct Scsi_Host *shost, const char *buf,
 178                                  int len);
 179 static int
 180 qla4xxx_sysfs_ddb_delete(struct iscsi_bus_flash_session *fnode_sess);
 181 static int qla4xxx_sysfs_ddb_login(struct iscsi_bus_flash_session *fnode_sess,
 182                                    struct iscsi_bus_flash_conn *fnode_conn);
 183 static int qla4xxx_sysfs_ddb_logout(struct iscsi_bus_flash_session *fnode_sess,
 184                                     struct iscsi_bus_flash_conn *fnode_conn);
 185 static int qla4xxx_sysfs_ddb_logout_sid(struct iscsi_cls_session *cls_sess);
 186
 187 static struct qla4_8xxx_legacy_intr_set legacy_intr[] =
 188     QLA82XX_LEGACY_INTR_CONFIG;
 189
 190 static const uint32_t qla4_82xx_reg_tbl[] = {
 191         QLA82XX_PEG_HALT_STATUS1,
 192         QLA82XX_PEG_HALT_STATUS2,
 193         QLA82XX_PEG_ALIVE_COUNTER,
 194         QLA82XX_CRB_DRV_ACTIVE,
 195         QLA82XX_CRB_DEV_STATE,
 196         QLA82XX_CRB_DRV_STATE,
 197         QLA82XX_CRB_DRV_SCRATCH,
 198         QLA82XX_CRB_DEV_PART_INFO,
 199         QLA82XX_CRB_DRV_IDC_VERSION,
 200         QLA82XX_FW_VERSION_MAJOR,
 201         QLA82XX_FW_VERSION_MINOR,
 202         QLA82XX_FW_VERSION_SUB,
 203         CRB_CMDPEG_STATE,
 204         CRB_TEMP_STATE,
 205 };
 206
 207 static const uint32_t qla4_83xx_reg_tbl[] = {
 208         QLA83XX_PEG_HALT_STATUS1,
 209         QLA83XX_PEG_HALT_STATUS2,
 210         QLA83XX_PEG_ALIVE_COUNTER,
 211         QLA83XX_CRB_DRV_ACTIVE,
 212         QLA83XX_CRB_DEV_STATE,
 213         QLA83XX_CRB_DRV_STATE,
 214         QLA83XX_CRB_DRV_SCRATCH,
 215         QLA83XX_CRB_DEV_PART_INFO1,
 216         QLA83XX_CRB_IDC_VER_MAJOR,
 217         QLA83XX_FW_VER_MAJOR,
 218         QLA83XX_FW_VER_MINOR,
 219         QLA83XX_FW_VER_SUB,
 220         QLA83XX_CMDPEG_STATE,
 221         QLA83XX_ASIC_TEMP,
 222 };
 223
 224 static struct scsi_host_template qla4xxx_driver_template = {
 225         .module                 = THIS_MODULE,
 226         .name                   = DRIVER_NAME,
 227         .proc_name              = DRIVER_NAME,
 228         .queuecommand           = qla4xxx_queuecommand,
 229
 230         .eh_abort_handler       = qla4xxx_eh_abort,
 231         .eh_device_reset_handler = qla4xxx_eh_device_reset,
 232         .eh_target_reset_handler = qla4xxx_eh_target_reset,
 233         .eh_host_reset_handler  = qla4xxx_eh_host_reset,
 234         .eh_timed_out           = qla4xxx_eh_cmd_timed_out,
 235
 236         .slave_alloc            = qla4xxx_slave_alloc,
 237         .change_queue_depth     = scsi_change_queue_depth,
 238
 239         .this_id                = -1,
 240         .cmd_per_lun            = 3,
 241         .sg_tablesize           = SG_ALL,
 242
 243         .max_sectors            = 0xFFFF,
 244         .shost_attrs            = qla4xxx_host_attrs,
 245         .host_reset             = qla4xxx_host_reset,
 246         .vendor_id              = SCSI_NL_VID_TYPE_PCI | PCI_VENDOR_ID_QLOGIC,
 247 };
 248
 249 static struct iscsi_transport qla4xxx_iscsi_transport = {
 250         .owner                  = THIS_MODULE,
 251         .name                   = DRIVER_NAME,
 252         .caps                   = CAP_TEXT_NEGO |
 253                                   CAP_DATA_PATH_OFFLOAD | CAP_HDRDGST |
 254                                   CAP_DATADGST | CAP_LOGIN_OFFLOAD |
 255                                   CAP_MULTI_R2T,
 256         .attr_is_visible        = qla4_attr_is_visible,
 257         .create_session         = qla4xxx_session_create,
 258         .destroy_session        = qla4xxx_session_destroy,
 259         .start_conn             = qla4xxx_conn_start,
 260         .create_conn            = qla4xxx_conn_create,
 261         .bind_conn              = qla4xxx_conn_bind,
 262         .unbind_conn            = iscsi_conn_unbind,
 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                 goto exit_get_chap;
 690         }
 691
 692         if (is_qla80XX(ha))
 693                 max_chap_entries = (ha->hw.flt_chap_size / 2) /
 694                                    sizeof(struct ql4_chap_table);
 695         else
 696                 max_chap_entries = MAX_CHAP_ENTRIES_40XX;
 697
 698         if (chap_index > max_chap_entries) {
 699                 ql4_printk(KERN_ERR, ha, "Invalid Chap index\n");
 700                 goto exit_get_chap;
 701         }
 702
 703         *chap_entry = (struct ql4_chap_table *)ha->chap_list + chap_index;
 704         if ((*chap_entry)->cookie !=
 705              __constant_cpu_to_le16(CHAP_VALID_COOKIE)) {
 706                 *chap_entry = NULL;
 707         } else {
 708                 rval = QLA_SUCCESS;
 709         }
 710
 711 exit_get_chap:
 712         return rval;
 713 }
 714
 715 /**
 716  * qla4xxx_find_free_chap_index - Find the first free chap index
 717  * @ha: pointer to adapter structure
 718  * @chap_index: CHAP index to be returned
 719  *
 720  * Find the first free chap index available in the chap table
 721  *
 722  * Note: Caller should acquire the chap lock before getting here.
 723  **/
 724 static int qla4xxx_find_free_chap_index(struct scsi_qla_host *ha,
 725                                         uint16_t *chap_index)
 726 {
 727         int i, rval;
 728         int free_index = -1;
 729         int max_chap_entries = 0;
 730         struct ql4_chap_table *chap_table;
 731
 732         if (is_qla80XX(ha))
 733                 max_chap_entries = (ha->hw.flt_chap_size / 2) /
 734                                                 sizeof(struct ql4_chap_table);
 735         else
 736                 max_chap_entries = MAX_CHAP_ENTRIES_40XX;
 737
 738         if (!ha->chap_list) {
 739                 ql4_printk(KERN_ERR, ha, "CHAP table cache is empty!\n");
 740                 rval = QLA_ERROR;
 741                 goto exit_find_chap;
 742         }
 743
 744         for (i = 0; i < max_chap_entries; i++) {
 745                 chap_table = (struct ql4_chap_table *)ha->chap_list + i;
 746
 747                 if ((chap_table->cookie !=
 748                     __constant_cpu_to_le16(CHAP_VALID_COOKIE)) &&
 749                    (i > MAX_RESRV_CHAP_IDX)) {
 750                                 free_index = i;
 751                                 break;
 752                 }
 753         }
 754
 755         if (free_index != -1) {
 756                 *chap_index = free_index;
 757                 rval = QLA_SUCCESS;
 758         } else {
 759                 rval = QLA_ERROR;
 760         }
 761
 762 exit_find_chap:
 763         return rval;
 764 }
 765
 766 static int qla4xxx_get_chap_list(struct Scsi_Host *shost, uint16_t chap_tbl_idx,
 767                                   uint32_t *num_entries, char *buf)
 768 {
 769         struct scsi_qla_host *ha = to_qla_host(shost);
 770         struct ql4_chap_table *chap_table;
 771         struct iscsi_chap_rec *chap_rec;
 772         int max_chap_entries = 0;
 773         int valid_chap_entries = 0;
 774         int ret = 0, i;
 775
 776         if (is_qla80XX(ha))
 777                 max_chap_entries = (ha->hw.flt_chap_size / 2) /
 778                                         sizeof(struct ql4_chap_table);
 779         else
 780                 max_chap_entries = MAX_CHAP_ENTRIES_40XX;
 781
 782         ql4_printk(KERN_INFO, ha, "%s: num_entries = %d, CHAP idx = %d\n",
 783                         __func__, *num_entries, chap_tbl_idx);
 784
 785         if (!buf) {
 786                 ret = -ENOMEM;
 787                 goto exit_get_chap_list;
 788         }
 789
 790         qla4xxx_create_chap_list(ha);
 791
 792         chap_rec = (struct iscsi_chap_rec *) buf;
 793         mutex_lock(&ha->chap_sem);
 794         for (i = chap_tbl_idx; i < max_chap_entries; i++) {
 795                 chap_table = (struct ql4_chap_table *)ha->chap_list + i;
 796                 if (chap_table->cookie !=
 797                     __constant_cpu_to_le16(CHAP_VALID_COOKIE))
 798                         continue;
 799
 800                 chap_rec->chap_tbl_idx = i;
 801                 strlcpy(chap_rec->username, chap_table->name,
 802                         ISCSI_CHAP_AUTH_NAME_MAX_LEN);
 803                 strlcpy(chap_rec->password, chap_table->secret,
 804                         QL4_CHAP_MAX_SECRET_LEN);
 805                 chap_rec->password_length = chap_table->secret_len;
 806
 807                 if (chap_table->flags & BIT_7) /* local */
 808                         chap_rec->chap_type = CHAP_TYPE_OUT;
 809
 810                 if (chap_table->flags & BIT_6) /* peer */
 811                         chap_rec->chap_type = CHAP_TYPE_IN;
 812
 813                 chap_rec++;
 814
 815                 valid_chap_entries++;
 816                 if (valid_chap_entries == *num_entries)
 817                         break;
 818         }
 819         mutex_unlock(&ha->chap_sem);
 820
 821 exit_get_chap_list:
 822         ql4_printk(KERN_INFO, ha, "%s: Valid CHAP Entries = %d\n",
 823                         __func__,  valid_chap_entries);
 824         *num_entries = valid_chap_entries;
 825         return ret;
 826 }
 827
 828 static int __qla4xxx_is_chap_active(struct device *dev, void *data)
 829 {
 830         int ret = 0;
 831         uint16_t *chap_tbl_idx = (uint16_t *) data;
 832         struct iscsi_cls_session *cls_session;
 833         struct iscsi_session *sess;
 834         struct ddb_entry *ddb_entry;
 835
 836         if (!iscsi_is_session_dev(dev))
 837                 goto exit_is_chap_active;
 838
 839         cls_session = iscsi_dev_to_session(dev);
 840         sess = cls_session->dd_data;
 841         ddb_entry = sess->dd_data;
 842
 843         if (iscsi_is_session_online(cls_session))
 844                 goto exit_is_chap_active;
 845
 846         if (ddb_entry->chap_tbl_idx == *chap_tbl_idx)
 847                 ret = 1;
 848
 849 exit_is_chap_active:
 850         return ret;
 851 }
 852
 853 static int qla4xxx_is_chap_active(struct Scsi_Host *shost,
 854                                   uint16_t chap_tbl_idx)
 855 {
 856         int ret = 0;
 857
 858         ret = device_for_each_child(&shost->shost_gendev, &chap_tbl_idx,
 859                                     __qla4xxx_is_chap_active);
 860
 861         return ret;
 862 }
 863
 864 static int qla4xxx_delete_chap(struct Scsi_Host *shost, uint16_t chap_tbl_idx)
 865 {
 866         struct scsi_qla_host *ha = to_qla_host(shost);
 867         struct ql4_chap_table *chap_table;
 868         dma_addr_t chap_dma;
 869         int max_chap_entries = 0;
 870         uint32_t offset = 0;
 871         uint32_t chap_size;
 872         int ret = 0;
 873
 874         chap_table = dma_pool_zalloc(ha->chap_dma_pool, GFP_KERNEL, &chap_dma);
 875         if (chap_table == NULL)
 876                 return -ENOMEM;
 877
 878         if (is_qla80XX(ha))
 879                 max_chap_entries = (ha->hw.flt_chap_size / 2) /
 880                                    sizeof(struct ql4_chap_table);
 881         else
 882                 max_chap_entries = MAX_CHAP_ENTRIES_40XX;
 883
 884         if (chap_tbl_idx > max_chap_entries) {
 885                 ret = -EINVAL;
 886                 goto exit_delete_chap;
 887         }
 888
 889         /* Check if chap index is in use.
 890          * If chap is in use don't delet chap entry */
 891         ret = qla4xxx_is_chap_active(shost, chap_tbl_idx);
 892         if (ret) {
 893                 ql4_printk(KERN_INFO, ha, "CHAP entry %d is in use, cannot "
 894                            "delete from flash\n", chap_tbl_idx);
 895                 ret = -EBUSY;
 896                 goto exit_delete_chap;
 897         }
 898
 899         chap_size = sizeof(struct ql4_chap_table);
 900         if (is_qla40XX(ha))
 901                 offset = FLASH_CHAP_OFFSET | (chap_tbl_idx * chap_size);
 902         else {
 903                 offset = FLASH_RAW_ACCESS_ADDR + (ha->hw.flt_region_chap << 2);
 904                 /* flt_chap_size is CHAP table size for both ports
 905                  * so divide it by 2 to calculate the offset for second port
 906                  */
 907                 if (ha->port_num == 1)
 908                         offset += (ha->hw.flt_chap_size / 2);
 909                 offset += (chap_tbl_idx * chap_size);
 910         }
 911
 912         ret = qla4xxx_get_flash(ha, chap_dma, offset, chap_size);
 913         if (ret != QLA_SUCCESS) {
 914                 ret = -EINVAL;
 915                 goto exit_delete_chap;
 916         }
 917
 918         DEBUG2(ql4_printk(KERN_INFO, ha, "Chap Cookie: x%x\n",
 919                           __le16_to_cpu(chap_table->cookie)));
 920
 921         if (__le16_to_cpu(chap_table->cookie) != CHAP_VALID_COOKIE) {
 922                 ql4_printk(KERN_ERR, ha, "No valid chap entry found\n");
 923                 goto exit_delete_chap;
 924         }
 925
 926         chap_table->cookie = __constant_cpu_to_le16(0xFFFF);
 927
 928         offset = FLASH_CHAP_OFFSET |
 929                         (chap_tbl_idx * sizeof(struct ql4_chap_table));
 930         ret = qla4xxx_set_flash(ha, chap_dma, offset, chap_size,
 931                                 FLASH_OPT_RMW_COMMIT);
 932         if (ret == QLA_SUCCESS && ha->chap_list) {
 933                 mutex_lock(&ha->chap_sem);
 934                 /* Update ha chap_list cache */
 935                 memcpy((struct ql4_chap_table *)ha->chap_list + chap_tbl_idx,
 936                         chap_table, sizeof(struct ql4_chap_table));
 937                 mutex_unlock(&ha->chap_sem);
 938         }
 939         if (ret != QLA_SUCCESS)
 940                 ret =  -EINVAL;
 941
 942 exit_delete_chap:
 943         dma_pool_free(ha->chap_dma_pool, chap_table, chap_dma);
 944         return ret;
 945 }
 946
 947 /**
 948  * qla4xxx_set_chap_entry - Make chap entry with given information
 949  * @shost: pointer to host
 950  * @data: chap info - credentials, index and type to make chap entry
 951  * @len: length of data
 952  *
 953  * Add or update chap entry with the given information
 954  **/
 955 static int qla4xxx_set_chap_entry(struct Scsi_Host *shost, void *data, int len)
 956 {
 957         struct scsi_qla_host *ha = to_qla_host(shost);
 958         struct iscsi_chap_rec chap_rec;
 959         struct ql4_chap_table *chap_entry = NULL;
 960         struct iscsi_param_info *param_info;
 961         struct nlattr *attr;
 962         int max_chap_entries = 0;
 963         int type;
 964         int rem = len;
 965         int rc = 0;
 966         int size;
 967
 968         memset(&chap_rec, 0, sizeof(chap_rec));
 969
 970         nla_for_each_attr(attr, data, len, rem) {
 971                 param_info = nla_data(attr);
 972
 973                 switch (param_info->param) {
 974                 case ISCSI_CHAP_PARAM_INDEX:
 975                         chap_rec.chap_tbl_idx = *(uint16_t *)param_info->value;
 976                         break;
 977                 case ISCSI_CHAP_PARAM_CHAP_TYPE:
 978                         chap_rec.chap_type = param_info->value[0];
 979                         break;
 980                 case ISCSI_CHAP_PARAM_USERNAME:
 981                         size = min_t(size_t, sizeof(chap_rec.username),
 982                                      param_info->len);
 983                         memcpy(chap_rec.username, param_info->value, size);
 984                         break;
 985                 case ISCSI_CHAP_PARAM_PASSWORD:
 986                         size = min_t(size_t, sizeof(chap_rec.password),
 987                                      param_info->len);
 988                         memcpy(chap_rec.password, param_info->value, size);
 989                         break;
 990                 case ISCSI_CHAP_PARAM_PASSWORD_LEN:
 991                         chap_rec.password_length = param_info->value[0];
 992                         break;
 993                 default:
 994                         ql4_printk(KERN_ERR, ha,
 995                                    "%s: No such sysfs attribute\n", __func__);
 996                         rc = -ENOSYS;
 997                         goto exit_set_chap;
 998                 }
 999         }
1000
1001         if (chap_rec.chap_type == CHAP_TYPE_IN)
1002                 type = BIDI_CHAP;
1003         else
1004                 type = LOCAL_CHAP;
1005
1006         if (is_qla80XX(ha))
1007                 max_chap_entries = (ha->hw.flt_chap_size / 2) /
1008                                    sizeof(struct ql4_chap_table);
1009         else
1010                 max_chap_entries = MAX_CHAP_ENTRIES_40XX;
1011
1012         mutex_lock(&ha->chap_sem);
1013         if (chap_rec.chap_tbl_idx < max_chap_entries) {
1014                 rc = qla4xxx_get_chap_by_index(ha, chap_rec.chap_tbl_idx,
1015                                                &chap_entry);
1016                 if (!rc) {
1017                         if (!(type == qla4xxx_get_chap_type(chap_entry))) {
1018                                 ql4_printk(KERN_INFO, ha,
1019                                            "Type mismatch for CHAP entry %d\n",
1020                                            chap_rec.chap_tbl_idx);
1021                                 rc = -EINVAL;
1022                                 goto exit_unlock_chap;
1023                         }
1024
1025                         /* If chap index is in use then don't modify it */
1026                         rc = qla4xxx_is_chap_active(shost,
1027                                                     chap_rec.chap_tbl_idx);
1028                         if (rc) {
1029                                 ql4_printk(KERN_INFO, ha,
1030                                            "CHAP entry %d is in use\n",
1031                                            chap_rec.chap_tbl_idx);
1032                                 rc = -EBUSY;
1033                                 goto exit_unlock_chap;
1034                         }
1035                 }
1036         } else {
1037                 rc = qla4xxx_find_free_chap_index(ha, &chap_rec.chap_tbl_idx);
1038                 if (rc) {
1039                         ql4_printk(KERN_INFO, ha, "CHAP entry not available\n");
1040                         rc = -EBUSY;
1041                         goto exit_unlock_chap;
1042                 }
1043         }
1044
1045         rc = qla4xxx_set_chap(ha, chap_rec.username, chap_rec.password,
1046                               chap_rec.chap_tbl_idx, type);
1047
1048 exit_unlock_chap:
1049         mutex_unlock(&ha->chap_sem);
1050
1051 exit_set_chap:
1052         return rc;
1053 }
1054
1055
1056 static int qla4xxx_get_host_stats(struct Scsi_Host *shost, char *buf, int len)
1057 {
1058         struct scsi_qla_host *ha = to_qla_host(shost);
1059         struct iscsi_offload_host_stats *host_stats = NULL;
1060         int host_stats_size;
1061         int ret = 0;
1062         int ddb_idx = 0;
1063         struct ql_iscsi_stats *ql_iscsi_stats = NULL;
1064         int stats_size;
1065         dma_addr_t iscsi_stats_dma;
1066
1067         DEBUG2(ql4_printk(KERN_INFO, ha, "Func: %s\n", __func__));
1068
1069         host_stats_size = sizeof(struct iscsi_offload_host_stats);
1070
1071         if (host_stats_size != len) {
1072                 ql4_printk(KERN_INFO, ha, "%s: host_stats size mismatch expected = %d, is = %d\n",
1073                            __func__, len, host_stats_size);
1074                 ret = -EINVAL;
1075                 goto exit_host_stats;
1076         }
1077         host_stats = (struct iscsi_offload_host_stats *)buf;
1078
1079         if (!buf) {
1080                 ret = -ENOMEM;
1081                 goto exit_host_stats;
1082         }
1083
1084         stats_size = PAGE_ALIGN(sizeof(struct ql_iscsi_stats));
1085
1086         ql_iscsi_stats = dma_alloc_coherent(&ha->pdev->dev, stats_size,
1087                                             &iscsi_stats_dma, GFP_KERNEL);
1088         if (!ql_iscsi_stats) {
1089                 ql4_printk(KERN_ERR, ha,
1090                            "Unable to allocate memory for iscsi stats\n");
1091                 ret = -ENOMEM;
1092                 goto exit_host_stats;
1093         }
1094
1095         ret =  qla4xxx_get_mgmt_data(ha, ddb_idx, stats_size,
1096                                      iscsi_stats_dma);
1097         if (ret != QLA_SUCCESS) {
1098                 ql4_printk(KERN_ERR, ha,
1099                            "Unable to retrieve iscsi stats\n");
1100                 ret = -EIO;
1101                 goto exit_host_stats;
1102         }
1103         host_stats->mactx_frames = le64_to_cpu(ql_iscsi_stats->mac_tx_frames);
1104         host_stats->mactx_bytes = le64_to_cpu(ql_iscsi_stats->mac_tx_bytes);
1105         host_stats->mactx_multicast_frames =
1106                         le64_to_cpu(ql_iscsi_stats->mac_tx_multicast_frames);
1107         host_stats->mactx_broadcast_frames =
1108                         le64_to_cpu(ql_iscsi_stats->mac_tx_broadcast_frames);
1109         host_stats->mactx_pause_frames =
1110                         le64_to_cpu(ql_iscsi_stats->mac_tx_pause_frames);
1111         host_stats->mactx_control_frames =
1112                         le64_to_cpu(ql_iscsi_stats->mac_tx_control_frames);
1113         host_stats->mactx_deferral =
1114                         le64_to_cpu(ql_iscsi_stats->mac_tx_deferral);
1115         host_stats->mactx_excess_deferral =
1116                         le64_to_cpu(ql_iscsi_stats->mac_tx_excess_deferral);
1117         host_stats->mactx_late_collision =
1118                         le64_to_cpu(ql_iscsi_stats->mac_tx_late_collision);
1119         host_stats->mactx_abort = le64_to_cpu(ql_iscsi_stats->mac_tx_abort);
1120         host_stats->mactx_single_collision =
1121                         le64_to_cpu(ql_iscsi_stats->mac_tx_single_collision);
1122         host_stats->mactx_multiple_collision =
1123                         le64_to_cpu(ql_iscsi_stats->mac_tx_multiple_collision);
1124         host_stats->mactx_collision =
1125                         le64_to_cpu(ql_iscsi_stats->mac_tx_collision);
1126         host_stats->mactx_frames_dropped =
1127                         le64_to_cpu(ql_iscsi_stats->mac_tx_frames_dropped);
1128         host_stats->mactx_jumbo_frames =
1129                         le64_to_cpu(ql_iscsi_stats->mac_tx_jumbo_frames);
1130         host_stats->macrx_frames = le64_to_cpu(ql_iscsi_stats->mac_rx_frames);
1131         host_stats->macrx_bytes = le64_to_cpu(ql_iscsi_stats->mac_rx_bytes);
1132         host_stats->macrx_unknown_control_frames =
1133                 le64_to_cpu(ql_iscsi_stats->mac_rx_unknown_control_frames);
1134         host_stats->macrx_pause_frames =
1135                         le64_to_cpu(ql_iscsi_stats->mac_rx_pause_frames);
1136         host_stats->macrx_control_frames =
1137                         le64_to_cpu(ql_iscsi_stats->mac_rx_control_frames);
1138         host_stats->macrx_dribble =
1139                         le64_to_cpu(ql_iscsi_stats->mac_rx_dribble);
1140         host_stats->macrx_frame_length_error =
1141                         le64_to_cpu(ql_iscsi_stats->mac_rx_frame_length_error);
1142         host_stats->macrx_jabber = le64_to_cpu(ql_iscsi_stats->mac_rx_jabber);
1143         host_stats->macrx_carrier_sense_error =
1144                 le64_to_cpu(ql_iscsi_stats->mac_rx_carrier_sense_error);
1145         host_stats->macrx_frame_discarded =
1146                         le64_to_cpu(ql_iscsi_stats->mac_rx_frame_discarded);
1147         host_stats->macrx_frames_dropped =
1148                         le64_to_cpu(ql_iscsi_stats->mac_rx_frames_dropped);
1149         host_stats->mac_crc_error = le64_to_cpu(ql_iscsi_stats->mac_crc_error);
1150         host_stats->mac_encoding_error =
1151                         le64_to_cpu(ql_iscsi_stats->mac_encoding_error);
1152         host_stats->macrx_length_error_large =
1153                         le64_to_cpu(ql_iscsi_stats->mac_rx_length_error_large);
1154         host_stats->macrx_length_error_small =
1155                         le64_to_cpu(ql_iscsi_stats->mac_rx_length_error_small);
1156         host_stats->macrx_multicast_frames =
1157                         le64_to_cpu(ql_iscsi_stats->mac_rx_multicast_frames);
1158         host_stats->macrx_broadcast_frames =
1159                         le64_to_cpu(ql_iscsi_stats->mac_rx_broadcast_frames);
1160         host_stats->iptx_packets = le64_to_cpu(ql_iscsi_stats->ip_tx_packets);
1161         host_stats->iptx_bytes = le64_to_cpu(ql_iscsi_stats->ip_tx_bytes);
1162         host_stats->iptx_fragments =
1163                         le64_to_cpu(ql_iscsi_stats->ip_tx_fragments);
1164         host_stats->iprx_packets = le64_to_cpu(ql_iscsi_stats->ip_rx_packets);
1165         host_stats->iprx_bytes = le64_to_cpu(ql_iscsi_stats->ip_rx_bytes);
1166         host_stats->iprx_fragments =
1167                         le64_to_cpu(ql_iscsi_stats->ip_rx_fragments);
1168         host_stats->ip_datagram_reassembly =
1169                         le64_to_cpu(ql_iscsi_stats->ip_datagram_reassembly);
1170         host_stats->ip_invalid_address_error =
1171                         le64_to_cpu(ql_iscsi_stats->ip_invalid_address_error);
1172         host_stats->ip_error_packets =
1173                         le64_to_cpu(ql_iscsi_stats->ip_error_packets);
1174         host_stats->ip_fragrx_overlap =
1175                         le64_to_cpu(ql_iscsi_stats->ip_fragrx_overlap);
1176         host_stats->ip_fragrx_outoforder =
1177                         le64_to_cpu(ql_iscsi_stats->ip_fragrx_outoforder);
1178         host_stats->ip_datagram_reassembly_timeout =
1179                 le64_to_cpu(ql_iscsi_stats->ip_datagram_reassembly_timeout);
1180         host_stats->ipv6tx_packets =
1181                         le64_to_cpu(ql_iscsi_stats->ipv6_tx_packets);
1182         host_stats->ipv6tx_bytes = le64_to_cpu(ql_iscsi_stats->ipv6_tx_bytes);
1183         host_stats->ipv6tx_fragments =
1184                         le64_to_cpu(ql_iscsi_stats->ipv6_tx_fragments);
1185         host_stats->ipv6rx_packets =
1186                         le64_to_cpu(ql_iscsi_stats->ipv6_rx_packets);
1187         host_stats->ipv6rx_bytes = le64_to_cpu(ql_iscsi_stats->ipv6_rx_bytes);
1188         host_stats->ipv6rx_fragments =
1189                         le64_to_cpu(ql_iscsi_stats->ipv6_rx_fragments);
1190         host_stats->ipv6_datagram_reassembly =
1191                         le64_to_cpu(ql_iscsi_stats->ipv6_datagram_reassembly);
1192         host_stats->ipv6_invalid_address_error =
1193                 le64_to_cpu(ql_iscsi_stats->ipv6_invalid_address_error);
1194         host_stats->ipv6_error_packets =
1195                         le64_to_cpu(ql_iscsi_stats->ipv6_error_packets);
1196         host_stats->ipv6_fragrx_overlap =
1197                         le64_to_cpu(ql_iscsi_stats->ipv6_fragrx_overlap);
1198         host_stats->ipv6_fragrx_outoforder =
1199                         le64_to_cpu(ql_iscsi_stats->ipv6_fragrx_outoforder);
1200         host_stats->ipv6_datagram_reassembly_timeout =
1201                 le64_to_cpu(ql_iscsi_stats->ipv6_datagram_reassembly_timeout);
1202         host_stats->tcptx_segments =
1203                         le64_to_cpu(ql_iscsi_stats->tcp_tx_segments);
1204         host_stats->tcptx_bytes = le64_to_cpu(ql_iscsi_stats->tcp_tx_bytes);
1205         host_stats->tcprx_segments =
1206                         le64_to_cpu(ql_iscsi_stats->tcp_rx_segments);
1207         host_stats->tcprx_byte = le64_to_cpu(ql_iscsi_stats->tcp_rx_byte);
1208         host_stats->tcp_duplicate_ack_retx =
1209                         le64_to_cpu(ql_iscsi_stats->tcp_duplicate_ack_retx);
1210         host_stats->tcp_retx_timer_expired =
1211                         le64_to_cpu(ql_iscsi_stats->tcp_retx_timer_expired);
1212         host_stats->tcprx_duplicate_ack =
1213                         le64_to_cpu(ql_iscsi_stats->tcp_rx_duplicate_ack);
1214         host_stats->tcprx_pure_ackr =
1215                         le64_to_cpu(ql_iscsi_stats->tcp_rx_pure_ackr);
1216         host_stats->tcptx_delayed_ack =
1217                         le64_to_cpu(ql_iscsi_stats->tcp_tx_delayed_ack);
1218         host_stats->tcptx_pure_ack =
1219                         le64_to_cpu(ql_iscsi_stats->tcp_tx_pure_ack);
1220         host_stats->tcprx_segment_error =
1221                         le64_to_cpu(ql_iscsi_stats->tcp_rx_segment_error);
1222         host_stats->tcprx_segment_outoforder =
1223                         le64_to_cpu(ql_iscsi_stats->tcp_rx_segment_outoforder);
1224         host_stats->tcprx_window_probe =
1225                         le64_to_cpu(ql_iscsi_stats->tcp_rx_window_probe);
1226         host_stats->tcprx_window_update =
1227                         le64_to_cpu(ql_iscsi_stats->tcp_rx_window_update);
1228         host_stats->tcptx_window_probe_persist =
1229                 le64_to_cpu(ql_iscsi_stats->tcp_tx_window_probe_persist);
1230         host_stats->ecc_error_correction =
1231                         le64_to_cpu(ql_iscsi_stats->ecc_error_correction);
1232         host_stats->iscsi_pdu_tx = le64_to_cpu(ql_iscsi_stats->iscsi_pdu_tx);
1233         host_stats->iscsi_data_bytes_tx =
1234                         le64_to_cpu(ql_iscsi_stats->iscsi_data_bytes_tx);
1235         host_stats->iscsi_pdu_rx = le64_to_cpu(ql_iscsi_stats->iscsi_pdu_rx);
1236         host_stats->iscsi_data_bytes_rx =
1237                         le64_to_cpu(ql_iscsi_stats->iscsi_data_bytes_rx);
1238         host_stats->iscsi_io_completed =
1239                         le64_to_cpu(ql_iscsi_stats->iscsi_io_completed);
1240         host_stats->iscsi_unexpected_io_rx =
1241                         le64_to_cpu(ql_iscsi_stats->iscsi_unexpected_io_rx);
1242         host_stats->iscsi_format_error =
1243                         le64_to_cpu(ql_iscsi_stats->iscsi_format_error);
1244         host_stats->iscsi_hdr_digest_error =
1245                         le64_to_cpu(ql_iscsi_stats->iscsi_hdr_digest_error);
1246         host_stats->iscsi_data_digest_error =
1247                         le64_to_cpu(ql_iscsi_stats->iscsi_data_digest_error);
1248         host_stats->iscsi_sequence_error =
1249                         le64_to_cpu(ql_iscsi_stats->iscsi_sequence_error);
1250 exit_host_stats:
1251         if (ql_iscsi_stats)
1252                 dma_free_coherent(&ha->pdev->dev, stats_size,
1253                                   ql_iscsi_stats, iscsi_stats_dma);
1254
1255         ql4_printk(KERN_INFO, ha, "%s: Get host stats done\n",
1256                    __func__);
1257         return ret;
1258 }
1259
1260 static int qla4xxx_get_iface_param(struct iscsi_iface *iface,
1261                                    enum iscsi_param_type param_type,
1262                                    int param, char *buf)
1263 {
1264         struct Scsi_Host *shost = iscsi_iface_to_shost(iface);
1265         struct scsi_qla_host *ha = to_qla_host(shost);
1266         int ival;
1267         char *pval = NULL;
1268         int len = -ENOSYS;
1269
1270         if (param_type == ISCSI_NET_PARAM) {
1271                 switch (param) {
1272                 case ISCSI_NET_PARAM_IPV4_ADDR:
1273                         len = sprintf(buf, "%pI4\n", &ha->ip_config.ip_address);
1274                         break;
1275                 case ISCSI_NET_PARAM_IPV4_SUBNET:
1276                         len = sprintf(buf, "%pI4\n",
1277                                       &ha->ip_config.subnet_mask);
1278                         break;
1279                 case ISCSI_NET_PARAM_IPV4_GW:
1280                         len = sprintf(buf, "%pI4\n", &ha->ip_config.gateway);
1281                         break;
1282                 case ISCSI_NET_PARAM_IFACE_ENABLE:
1283                         if (iface->iface_type == ISCSI_IFACE_TYPE_IPV4) {
1284                                 OP_STATE(ha->ip_config.ipv4_options,
1285                                          IPOPT_IPV4_PROTOCOL_ENABLE, pval);
1286                         } else {
1287                                 OP_STATE(ha->ip_config.ipv6_options,
1288                                          IPV6_OPT_IPV6_PROTOCOL_ENABLE, pval);
1289                         }
1290
1291                         len = sprintf(buf, "%s\n", pval);
1292                         break;
1293                 case ISCSI_NET_PARAM_IPV4_BOOTPROTO:
1294                         len = sprintf(buf, "%s\n",
1295                                       (ha->ip_config.tcp_options &
1296                                        TCPOPT_DHCP_ENABLE) ?
1297                                       "dhcp" : "static");
1298                         break;
1299                 case ISCSI_NET_PARAM_IPV6_ADDR:
1300                         if (iface->iface_num == 0)
1301                                 len = sprintf(buf, "%pI6\n",
1302                                               &ha->ip_config.ipv6_addr0);
1303                         if (iface->iface_num == 1)
1304                                 len = sprintf(buf, "%pI6\n",
1305                                               &ha->ip_config.ipv6_addr1);
1306                         break;
1307                 case ISCSI_NET_PARAM_IPV6_LINKLOCAL:
1308                         len = sprintf(buf, "%pI6\n",
1309                                       &ha->ip_config.ipv6_link_local_addr);
1310                         break;
1311                 case ISCSI_NET_PARAM_IPV6_ROUTER:
1312                         len = sprintf(buf, "%pI6\n",
1313                                       &ha->ip_config.ipv6_default_router_addr);
1314                         break;
1315                 case ISCSI_NET_PARAM_IPV6_ADDR_AUTOCFG:
1316                         pval = (ha->ip_config.ipv6_addl_options &
1317                                 IPV6_ADDOPT_NEIGHBOR_DISCOVERY_ADDR_ENABLE) ?
1318                                 "nd" : "static";
1319
1320                         len = sprintf(buf, "%s\n", pval);
1321                         break;
1322                 case ISCSI_NET_PARAM_IPV6_LINKLOCAL_AUTOCFG:
1323                         pval = (ha->ip_config.ipv6_addl_options &
1324                                 IPV6_ADDOPT_AUTOCONFIG_LINK_LOCAL_ADDR) ?
1325                                 "auto" : "static";
1326
1327                         len = sprintf(buf, "%s\n", pval);
1328                         break;
1329                 case ISCSI_NET_PARAM_VLAN_ID:
1330                         if (iface->iface_type == ISCSI_IFACE_TYPE_IPV4)
1331                                 ival = ha->ip_config.ipv4_vlan_tag &
1332                                        ISCSI_MAX_VLAN_ID;
1333                         else
1334                                 ival = ha->ip_config.ipv6_vlan_tag &
1335                                        ISCSI_MAX_VLAN_ID;
1336
1337                         len = sprintf(buf, "%d\n", ival);
1338                         break;
1339                 case ISCSI_NET_PARAM_VLAN_PRIORITY:
1340                         if (iface->iface_type == ISCSI_IFACE_TYPE_IPV4)
1341                                 ival = (ha->ip_config.ipv4_vlan_tag >> 13) &
1342                                        ISCSI_MAX_VLAN_PRIORITY;
1343                         else
1344                                 ival = (ha->ip_config.ipv6_vlan_tag >> 13) &
1345                                        ISCSI_MAX_VLAN_PRIORITY;
1346
1347                         len = sprintf(buf, "%d\n", ival);
1348                         break;
1349                 case ISCSI_NET_PARAM_VLAN_ENABLED:
1350                         if (iface->iface_type == ISCSI_IFACE_TYPE_IPV4) {
1351                                 OP_STATE(ha->ip_config.ipv4_options,
1352                                          IPOPT_VLAN_TAGGING_ENABLE, pval);
1353                         } else {
1354                                 OP_STATE(ha->ip_config.ipv6_options,
1355                                          IPV6_OPT_VLAN_TAGGING_ENABLE, pval);
1356                         }
1357                         len = sprintf(buf, "%s\n", pval);
1358                         break;
1359                 case ISCSI_NET_PARAM_MTU:
1360                         len = sprintf(buf, "%d\n", ha->ip_config.eth_mtu_size);
1361                         break;
1362                 case ISCSI_NET_PARAM_PORT:
1363                         if (iface->iface_type == ISCSI_IFACE_TYPE_IPV4)
1364                                 len = sprintf(buf, "%d\n",
1365                                               ha->ip_config.ipv4_port);
1366                         else
1367                                 len = sprintf(buf, "%d\n",
1368                                               ha->ip_config.ipv6_port);
1369                         break;
1370                 case ISCSI_NET_PARAM_IPADDR_STATE:
1371                         if (iface->iface_type == ISCSI_IFACE_TYPE_IPV4) {
1372                                 pval = iscsi_get_ipaddress_state_name(
1373                                                 ha->ip_config.ipv4_addr_state);
1374                         } else {
1375                                 if (iface->iface_num == 0)
1376                                         pval = iscsi_get_ipaddress_state_name(
1377                                                 ha->ip_config.ipv6_addr0_state);
1378                                 else if (iface->iface_num == 1)
1379                                         pval = iscsi_get_ipaddress_state_name(
1380                                                 ha->ip_config.ipv6_addr1_state);
1381                         }
1382
1383                         len = sprintf(buf, "%s\n", pval);
1384                         break;
1385                 case ISCSI_NET_PARAM_IPV6_LINKLOCAL_STATE:
1386                         pval = iscsi_get_ipaddress_state_name(
1387                                         ha->ip_config.ipv6_link_local_state);
1388                         len = sprintf(buf, "%s\n", pval);
1389                         break;
1390                 case ISCSI_NET_PARAM_IPV6_ROUTER_STATE:
1391                         pval = iscsi_get_router_state_name(
1392                                       ha->ip_config.ipv6_default_router_state);
1393                         len = sprintf(buf, "%s\n", pval);
1394                         break;
1395                 case ISCSI_NET_PARAM_DELAYED_ACK_EN:
1396                         if (iface->iface_type == ISCSI_IFACE_TYPE_IPV4) {
1397                                 OP_STATE(~ha->ip_config.tcp_options,
1398                                          TCPOPT_DELAYED_ACK_DISABLE, pval);
1399                         } else {
1400                                 OP_STATE(~ha->ip_config.ipv6_tcp_options,
1401                                          IPV6_TCPOPT_DELAYED_ACK_DISABLE, pval);
1402                         }
1403                         len = sprintf(buf, "%s\n", pval);
1404                         break;
1405                 case ISCSI_NET_PARAM_TCP_NAGLE_DISABLE:
1406                         if (iface->iface_type == ISCSI_IFACE_TYPE_IPV4) {
1407                                 OP_STATE(~ha->ip_config.tcp_options,
1408                                          TCPOPT_NAGLE_ALGO_DISABLE, pval);
1409                         } else {
1410                                 OP_STATE(~ha->ip_config.ipv6_tcp_options,
1411                                          IPV6_TCPOPT_NAGLE_ALGO_DISABLE, pval);
1412                         }
1413                         len = sprintf(buf, "%s\n", pval);
1414                         break;
1415                 case ISCSI_NET_PARAM_TCP_WSF_DISABLE:
1416                         if (iface->iface_type == ISCSI_IFACE_TYPE_IPV4) {
1417                                 OP_STATE(~ha->ip_config.tcp_options,
1418                                          TCPOPT_WINDOW_SCALE_DISABLE, pval);
1419                         } else {
1420                                 OP_STATE(~ha->ip_config.ipv6_tcp_options,
1421                                          IPV6_TCPOPT_WINDOW_SCALE_DISABLE,
1422                                          pval);
1423                         }
1424                         len = sprintf(buf, "%s\n", pval);
1425                         break;
1426                 case ISCSI_NET_PARAM_TCP_WSF:
1427                         if (iface->iface_type == ISCSI_IFACE_TYPE_IPV4)
1428                                 len = sprintf(buf, "%d\n",
1429                                               ha->ip_config.tcp_wsf);
1430                         else
1431                                 len = sprintf(buf, "%d\n",
1432                                               ha->ip_config.ipv6_tcp_wsf);
1433                         break;
1434                 case ISCSI_NET_PARAM_TCP_TIMER_SCALE:
1435                         if (iface->iface_type == ISCSI_IFACE_TYPE_IPV4)
1436                                 ival = (ha->ip_config.tcp_options &
1437                                         TCPOPT_TIMER_SCALE) >> 1;
1438                         else
1439                                 ival = (ha->ip_config.ipv6_tcp_options &
1440                                         IPV6_TCPOPT_TIMER_SCALE) >> 1;
1441
1442                         len = sprintf(buf, "%d\n", ival);
1443                         break;
1444                 case ISCSI_NET_PARAM_TCP_TIMESTAMP_EN:
1445                         if (iface->iface_type == ISCSI_IFACE_TYPE_IPV4) {
1446                                 OP_STATE(ha->ip_config.tcp_options,
1447                                          TCPOPT_TIMESTAMP_ENABLE, pval);
1448                         } else {
1449                                 OP_STATE(ha->ip_config.ipv6_tcp_options,
1450                                          IPV6_TCPOPT_TIMESTAMP_EN, pval);
1451                         }
1452                         len = sprintf(buf, "%s\n", pval);
1453                         break;
1454                 case ISCSI_NET_PARAM_CACHE_ID:
1455                         if (iface->iface_type == ISCSI_IFACE_TYPE_IPV4)
1456                                 len = sprintf(buf, "%d\n",
1457                                               ha->ip_config.ipv4_cache_id);
1458                         else
1459                                 len = sprintf(buf, "%d\n",
1460                                               ha->ip_config.ipv6_cache_id);
1461                         break;
1462                 case ISCSI_NET_PARAM_IPV4_DHCP_DNS_ADDR_EN:
1463                         OP_STATE(ha->ip_config.tcp_options,
1464                                  TCPOPT_DNS_SERVER_IP_EN, pval);
1465
1466                         len = sprintf(buf, "%s\n", pval);
1467                         break;
1468                 case ISCSI_NET_PARAM_IPV4_DHCP_SLP_DA_EN:
1469                         OP_STATE(ha->ip_config.tcp_options,
1470                                  TCPOPT_SLP_DA_INFO_EN, pval);
1471
1472                         len = sprintf(buf, "%s\n", pval);
1473                         break;
1474                 case ISCSI_NET_PARAM_IPV4_TOS_EN:
1475                         OP_STATE(ha->ip_config.ipv4_options,
1476                                  IPOPT_IPV4_TOS_EN, pval);
1477
1478                         len = sprintf(buf, "%s\n", pval);
1479                         break;
1480                 case ISCSI_NET_PARAM_IPV4_TOS:
1481                         len = sprintf(buf, "%d\n", ha->ip_config.ipv4_tos);
1482                         break;
1483                 case ISCSI_NET_PARAM_IPV4_GRAT_ARP_EN:
1484                         OP_STATE(ha->ip_config.ipv4_options,
1485                                  IPOPT_GRAT_ARP_EN, pval);
1486
1487                         len = sprintf(buf, "%s\n", pval);
1488                         break;
1489                 case ISCSI_NET_PARAM_IPV4_DHCP_ALT_CLIENT_ID_EN:
1490                         OP_STATE(ha->ip_config.ipv4_options, IPOPT_ALT_CID_EN,
1491                                  pval);
1492
1493                         len = sprintf(buf, "%s\n", pval);
1494                         break;
1495                 case ISCSI_NET_PARAM_IPV4_DHCP_ALT_CLIENT_ID:
1496                         pval = (ha->ip_config.ipv4_alt_cid_len) ?
1497                                (char *)ha->ip_config.ipv4_alt_cid : "";
1498
1499                         len = sprintf(buf, "%s\n", pval);
1500                         break;
1501                 case ISCSI_NET_PARAM_IPV4_DHCP_REQ_VENDOR_ID_EN:
1502                         OP_STATE(ha->ip_config.ipv4_options,
1503                                  IPOPT_REQ_VID_EN, pval);
1504
1505                         len = sprintf(buf, "%s\n", pval);
1506                         break;
1507                 case ISCSI_NET_PARAM_IPV4_DHCP_USE_VENDOR_ID_EN:
1508                         OP_STATE(ha->ip_config.ipv4_options,
1509                                  IPOPT_USE_VID_EN, pval);
1510
1511                         len = sprintf(buf, "%s\n", pval);
1512                         break;
1513                 case ISCSI_NET_PARAM_IPV4_DHCP_VENDOR_ID:
1514                         pval = (ha->ip_config.ipv4_vid_len) ?
1515                                (char *)ha->ip_config.ipv4_vid : "";
1516
1517                         len = sprintf(buf, "%s\n", pval);
1518                         break;
1519                 case ISCSI_NET_PARAM_IPV4_DHCP_LEARN_IQN_EN:
1520                         OP_STATE(ha->ip_config.ipv4_options,
1521                                  IPOPT_LEARN_IQN_EN, pval);
1522
1523                         len = sprintf(buf, "%s\n", pval);
1524                         break;
1525                 case ISCSI_NET_PARAM_IPV4_FRAGMENT_DISABLE:
1526                         OP_STATE(~ha->ip_config.ipv4_options,
1527                                  IPOPT_FRAGMENTATION_DISABLE, pval);
1528
1529                         len = sprintf(buf, "%s\n", pval);
1530                         break;
1531                 case ISCSI_NET_PARAM_IPV4_IN_FORWARD_EN:
1532                         OP_STATE(ha->ip_config.ipv4_options,
1533                                  IPOPT_IN_FORWARD_EN, pval);
1534
1535                         len = sprintf(buf, "%s\n", pval);
1536                         break;
1537                 case ISCSI_NET_PARAM_REDIRECT_EN:
1538                         if (iface->iface_type == ISCSI_IFACE_TYPE_IPV4) {
1539                                 OP_STATE(ha->ip_config.ipv4_options,
1540                                          IPOPT_ARP_REDIRECT_EN, pval);
1541                         } else {
1542                                 OP_STATE(ha->ip_config.ipv6_options,
1543                                          IPV6_OPT_REDIRECT_EN, pval);
1544                         }
1545                         len = sprintf(buf, "%s\n", pval);
1546                         break;
1547                 case ISCSI_NET_PARAM_IPV4_TTL:
1548                         len = sprintf(buf, "%d\n", ha->ip_config.ipv4_ttl);
1549                         break;
1550                 case ISCSI_NET_PARAM_IPV6_GRAT_NEIGHBOR_ADV_EN:
1551                         OP_STATE(ha->ip_config.ipv6_options,
1552                                  IPV6_OPT_GRAT_NEIGHBOR_ADV_EN, pval);
1553
1554                         len = sprintf(buf, "%s\n", pval);
1555                         break;
1556                 case ISCSI_NET_PARAM_IPV6_MLD_EN:
1557                         OP_STATE(ha->ip_config.ipv6_addl_options,
1558                                  IPV6_ADDOPT_MLD_EN, pval);
1559
1560                         len = sprintf(buf, "%s\n", pval);
1561                         break;
1562                 case ISCSI_NET_PARAM_IPV6_FLOW_LABEL:
1563                         len = sprintf(buf, "%u\n", ha->ip_config.ipv6_flow_lbl);
1564                         break;
1565                 case ISCSI_NET_PARAM_IPV6_TRAFFIC_CLASS:
1566                         len = sprintf(buf, "%d\n",
1567                                       ha->ip_config.ipv6_traffic_class);
1568                         break;
1569                 case ISCSI_NET_PARAM_IPV6_HOP_LIMIT:
1570                         len = sprintf(buf, "%d\n",
1571                                       ha->ip_config.ipv6_hop_limit);
1572                         break;
1573                 case ISCSI_NET_PARAM_IPV6_ND_REACHABLE_TMO:
1574                         len = sprintf(buf, "%d\n",
1575                                       ha->ip_config.ipv6_nd_reach_time);
1576                         break;
1577                 case ISCSI_NET_PARAM_IPV6_ND_REXMIT_TIME:
1578                         len = sprintf(buf, "%d\n",
1579                                       ha->ip_config.ipv6_nd_rexmit_timer);
1580                         break;
1581                 case ISCSI_NET_PARAM_IPV6_ND_STALE_TMO:
1582                         len = sprintf(buf, "%d\n",
1583                                       ha->ip_config.ipv6_nd_stale_timeout);
1584                         break;
1585                 case ISCSI_NET_PARAM_IPV6_DUP_ADDR_DETECT_CNT:
1586                         len = sprintf(buf, "%d\n",
1587                                       ha->ip_config.ipv6_dup_addr_detect_count);
1588                         break;
1589                 case ISCSI_NET_PARAM_IPV6_RTR_ADV_LINK_MTU:
1590                         len = sprintf(buf, "%d\n",
1591                                       ha->ip_config.ipv6_gw_advrt_mtu);
1592                         break;
1593                 default:
1594                         len = -ENOSYS;
1595                 }
1596         } else if (param_type == ISCSI_IFACE_PARAM) {
1597                 switch (param) {
1598                 case ISCSI_IFACE_PARAM_DEF_TASKMGMT_TMO:
1599                         len = sprintf(buf, "%d\n", ha->ip_config.def_timeout);
1600                         break;
1601                 case ISCSI_IFACE_PARAM_HDRDGST_EN:
1602                         OP_STATE(ha->ip_config.iscsi_options,
1603                                  ISCSIOPTS_HEADER_DIGEST_EN, pval);
1604
1605                         len = sprintf(buf, "%s\n", pval);
1606                         break;
1607                 case ISCSI_IFACE_PARAM_DATADGST_EN:
1608                         OP_STATE(ha->ip_config.iscsi_options,
1609                                  ISCSIOPTS_DATA_DIGEST_EN, pval);
1610
1611                         len = sprintf(buf, "%s\n", pval);
1612                         break;
1613                 case ISCSI_IFACE_PARAM_IMM_DATA_EN:
1614                         OP_STATE(ha->ip_config.iscsi_options,
1615                                  ISCSIOPTS_IMMEDIATE_DATA_EN, pval);
1616
1617                         len = sprintf(buf, "%s\n", pval);
1618                         break;
1619                 case ISCSI_IFACE_PARAM_INITIAL_R2T_EN:
1620                         OP_STATE(ha->ip_config.iscsi_options,
1621                                  ISCSIOPTS_INITIAL_R2T_EN, pval);
1622
1623                         len = sprintf(buf, "%s\n", pval);
1624                         break;
1625                 case ISCSI_IFACE_PARAM_DATASEQ_INORDER_EN:
1626                         OP_STATE(ha->ip_config.iscsi_options,
1627                                  ISCSIOPTS_DATA_SEQ_INORDER_EN, pval);
1628
1629                         len = sprintf(buf, "%s\n", pval);
1630                         break;
1631                 case ISCSI_IFACE_PARAM_PDU_INORDER_EN:
1632                         OP_STATE(ha->ip_config.iscsi_options,
1633                                  ISCSIOPTS_DATA_PDU_INORDER_EN, pval);
1634
1635                         len = sprintf(buf, "%s\n", pval);
1636                         break;
1637                 case ISCSI_IFACE_PARAM_ERL:
1638                         len = sprintf(buf, "%d\n",
1639                                       (ha->ip_config.iscsi_options &
1640                                        ISCSIOPTS_ERL));
1641                         break;
1642                 case ISCSI_IFACE_PARAM_MAX_RECV_DLENGTH:
1643                         len = sprintf(buf, "%u\n",
1644                                       ha->ip_config.iscsi_max_pdu_size *
1645                                       BYTE_UNITS);
1646                         break;
1647                 case ISCSI_IFACE_PARAM_FIRST_BURST:
1648                         len = sprintf(buf, "%u\n",
1649                                       ha->ip_config.iscsi_first_burst_len *
1650                                       BYTE_UNITS);
1651                         break;
1652                 case ISCSI_IFACE_PARAM_MAX_R2T:
1653                         len = sprintf(buf, "%d\n",
1654                                       ha->ip_config.iscsi_max_outstnd_r2t);
1655                         break;
1656                 case ISCSI_IFACE_PARAM_MAX_BURST:
1657                         len = sprintf(buf, "%u\n",
1658                                       ha->ip_config.iscsi_max_burst_len *
1659                                       BYTE_UNITS);
1660                         break;
1661                 case ISCSI_IFACE_PARAM_CHAP_AUTH_EN:
1662                         OP_STATE(ha->ip_config.iscsi_options,
1663                                  ISCSIOPTS_CHAP_AUTH_EN, pval);
1664
1665                         len = sprintf(buf, "%s\n", pval);
1666                         break;
1667                 case ISCSI_IFACE_PARAM_BIDI_CHAP_EN:
1668                         OP_STATE(ha->ip_config.iscsi_options,
1669                                  ISCSIOPTS_BIDI_CHAP_EN, pval);
1670
1671                         len = sprintf(buf, "%s\n", pval);
1672                         break;
1673                 case ISCSI_IFACE_PARAM_DISCOVERY_AUTH_OPTIONAL:
1674                         OP_STATE(ha->ip_config.iscsi_options,
1675                                  ISCSIOPTS_DISCOVERY_AUTH_EN, pval);
1676
1677                         len = sprintf(buf, "%s\n", pval);
1678                         break;
1679                 case ISCSI_IFACE_PARAM_DISCOVERY_LOGOUT_EN:
1680                         OP_STATE(ha->ip_config.iscsi_options,
1681                                  ISCSIOPTS_DISCOVERY_LOGOUT_EN, pval);
1682
1683                         len = sprintf(buf, "%s\n", pval);
1684                         break;
1685                 case ISCSI_IFACE_PARAM_STRICT_LOGIN_COMP_EN:
1686                         OP_STATE(ha->ip_config.iscsi_options,
1687                                  ISCSIOPTS_STRICT_LOGIN_COMP_EN, pval);
1688
1689                         len = sprintf(buf, "%s\n", pval);
1690                         break;
1691                 case ISCSI_IFACE_PARAM_INITIATOR_NAME:
1692                         len = sprintf(buf, "%s\n", ha->ip_config.iscsi_name);
1693                         break;
1694                 default:
1695                         len = -ENOSYS;
1696                 }
1697         }
1698
1699         return len;
1700 }
1701
1702 static struct iscsi_endpoint *
1703 qla4xxx_ep_connect(struct Scsi_Host *shost, struct sockaddr *dst_addr,
1704                    int non_blocking)
1705 {
1706         int ret;
1707         struct iscsi_endpoint *ep;
1708         struct qla_endpoint *qla_ep;
1709         struct scsi_qla_host *ha;
1710         struct sockaddr_in *addr;
1711         struct sockaddr_in6 *addr6;
1712
1713         if (!shost) {
1714                 ret = -ENXIO;
1715                 pr_err("%s: shost is NULL\n", __func__);
1716                 return ERR_PTR(ret);
1717         }
1718
1719         ha = iscsi_host_priv(shost);
1720         ep = iscsi_create_endpoint(sizeof(struct qla_endpoint));
1721         if (!ep) {
1722                 ret = -ENOMEM;
1723                 return ERR_PTR(ret);
1724         }
1725
1726         qla_ep = ep->dd_data;
1727         memset(qla_ep, 0, sizeof(struct qla_endpoint));
1728         if (dst_addr->sa_family == AF_INET) {
1729                 memcpy(&qla_ep->dst_addr, dst_addr, sizeof(struct sockaddr_in));
1730                 addr = (struct sockaddr_in *)&qla_ep->dst_addr;
1731                 DEBUG2(ql4_printk(KERN_INFO, ha, "%s: %pI4\n", __func__,
1732                                   (char *)&addr->sin_addr));
1733         } else if (dst_addr->sa_family == AF_INET6) {
1734                 memcpy(&qla_ep->dst_addr, dst_addr,
1735                        sizeof(struct sockaddr_in6));
1736                 addr6 = (struct sockaddr_in6 *)&qla_ep->dst_addr;
1737                 DEBUG2(ql4_printk(KERN_INFO, ha, "%s: %pI6\n", __func__,
1738                                   (char *)&addr6->sin6_addr));
1739         } else {
1740                 ql4_printk(KERN_WARNING, ha, "%s: Invalid endpoint\n",
1741                            __func__);
1742         }
1743
1744         qla_ep->host = shost;
1745
1746         return ep;
1747 }
1748
1749 static int qla4xxx_ep_poll(struct iscsi_endpoint *ep, int timeout_ms)
1750 {
1751         struct qla_endpoint *qla_ep;
1752         struct scsi_qla_host *ha;
1753         int ret = 0;
1754
1755         qla_ep = ep->dd_data;
1756         ha = to_qla_host(qla_ep->host);
1757         DEBUG2(pr_info_ratelimited("%s: host: %ld\n", __func__, ha->host_no));
1758
1759         if (adapter_up(ha) && !test_bit(AF_BUILD_DDB_LIST, &ha->flags))
1760                 ret = 1;
1761
1762         return ret;
1763 }
1764
1765 static void qla4xxx_ep_disconnect(struct iscsi_endpoint *ep)
1766 {
1767         struct qla_endpoint *qla_ep;
1768         struct scsi_qla_host *ha;
1769
1770         qla_ep = ep->dd_data;
1771         ha = to_qla_host(qla_ep->host);
1772         DEBUG2(ql4_printk(KERN_INFO, ha, "%s: host: %ld\n", __func__,
1773                           ha->host_no));
1774         iscsi_destroy_endpoint(ep);
1775 }
1776
1777 static int qla4xxx_get_ep_param(struct iscsi_endpoint *ep,
1778                                 enum iscsi_param param,
1779                                 char *buf)
1780 {
1781         struct qla_endpoint *qla_ep = ep->dd_data;
1782         struct sockaddr *dst_addr;
1783         struct scsi_qla_host *ha;
1784
1785         if (!qla_ep)
1786                 return -ENOTCONN;
1787
1788         ha = to_qla_host(qla_ep->host);
1789         DEBUG2(ql4_printk(KERN_INFO, ha, "%s: host: %ld\n", __func__,
1790                           ha->host_no));
1791
1792         switch (param) {
1793         case ISCSI_PARAM_CONN_PORT:
1794         case ISCSI_PARAM_CONN_ADDRESS:
1795                 dst_addr = (struct sockaddr *)&qla_ep->dst_addr;
1796                 if (!dst_addr)
1797                         return -ENOTCONN;
1798
1799                 return iscsi_conn_get_addr_param((struct sockaddr_storage *)
1800                                                  &qla_ep->dst_addr, param, buf);
1801         default:
1802                 return -ENOSYS;
1803         }
1804 }
1805
1806 static void qla4xxx_conn_get_stats(struct iscsi_cls_conn *cls_conn,
1807                                    struct iscsi_stats *stats)
1808 {
1809         struct iscsi_session *sess;
1810         struct iscsi_cls_session *cls_sess;
1811         struct ddb_entry *ddb_entry;
1812         struct scsi_qla_host *ha;
1813         struct ql_iscsi_stats *ql_iscsi_stats;
1814         int stats_size;
1815         int ret;
1816         dma_addr_t iscsi_stats_dma;
1817
1818         cls_sess = iscsi_conn_to_session(cls_conn);
1819         sess = cls_sess->dd_data;
1820         ddb_entry = sess->dd_data;
1821         ha = ddb_entry->ha;
1822
1823         DEBUG2(ql4_printk(KERN_INFO, ha, "%s: host: %ld\n", __func__,
1824                           ha->host_no));
1825         stats_size = PAGE_ALIGN(sizeof(struct ql_iscsi_stats));
1826         /* Allocate memory */
1827         ql_iscsi_stats = dma_alloc_coherent(&ha->pdev->dev, stats_size,
1828                                             &iscsi_stats_dma, GFP_KERNEL);
1829         if (!ql_iscsi_stats) {
1830                 ql4_printk(KERN_ERR, ha,
1831                            "Unable to allocate memory for iscsi stats\n");
1832                 goto exit_get_stats;
1833         }
1834
1835         ret =  qla4xxx_get_mgmt_data(ha, ddb_entry->fw_ddb_index, stats_size,
1836                                      iscsi_stats_dma);
1837         if (ret != QLA_SUCCESS) {
1838                 ql4_printk(KERN_ERR, ha,
1839                            "Unable to retrieve iscsi stats\n");
1840                 goto free_stats;
1841         }
1842
1843         /* octets */
1844         stats->txdata_octets = le64_to_cpu(ql_iscsi_stats->tx_data_octets);
1845         stats->rxdata_octets = le64_to_cpu(ql_iscsi_stats->rx_data_octets);
1846         /* xmit pdus */
1847         stats->noptx_pdus = le32_to_cpu(ql_iscsi_stats->tx_nopout_pdus);
1848         stats->scsicmd_pdus = le32_to_cpu(ql_iscsi_stats->tx_scsi_cmd_pdus);
1849         stats->tmfcmd_pdus = le32_to_cpu(ql_iscsi_stats->tx_tmf_cmd_pdus);
1850         stats->login_pdus = le32_to_cpu(ql_iscsi_stats->tx_login_cmd_pdus);
1851         stats->text_pdus = le32_to_cpu(ql_iscsi_stats->tx_text_cmd_pdus);
1852         stats->dataout_pdus = le32_to_cpu(ql_iscsi_stats->tx_scsi_write_pdus);
1853         stats->logout_pdus = le32_to_cpu(ql_iscsi_stats->tx_logout_cmd_pdus);
1854         stats->snack_pdus = le32_to_cpu(ql_iscsi_stats->tx_snack_req_pdus);
1855         /* recv pdus */
1856         stats->noprx_pdus = le32_to_cpu(ql_iscsi_stats->rx_nopin_pdus);
1857         stats->scsirsp_pdus = le32_to_cpu(ql_iscsi_stats->rx_scsi_resp_pdus);
1858         stats->tmfrsp_pdus = le32_to_cpu(ql_iscsi_stats->rx_tmf_resp_pdus);
1859         stats->textrsp_pdus = le32_to_cpu(ql_iscsi_stats->rx_text_resp_pdus);
1860         stats->datain_pdus = le32_to_cpu(ql_iscsi_stats->rx_scsi_read_pdus);
1861         stats->logoutrsp_pdus =
1862                         le32_to_cpu(ql_iscsi_stats->rx_logout_resp_pdus);
1863         stats->r2t_pdus = le32_to_cpu(ql_iscsi_stats->rx_r2t_pdus);
1864         stats->async_pdus = le32_to_cpu(ql_iscsi_stats->rx_async_pdus);
1865         stats->rjt_pdus = le32_to_cpu(ql_iscsi_stats->rx_reject_pdus);
1866
1867 free_stats:
1868         dma_free_coherent(&ha->pdev->dev, stats_size, ql_iscsi_stats,
1869                           iscsi_stats_dma);
1870 exit_get_stats:
1871         return;
1872 }
1873
1874 static enum blk_eh_timer_return qla4xxx_eh_cmd_timed_out(struct scsi_cmnd *sc)
1875 {
1876         struct iscsi_cls_session *session;
1877         unsigned long flags;
1878         enum blk_eh_timer_return ret = BLK_EH_DONE;
1879
1880         session = starget_to_session(scsi_target(sc->device));
1881
1882         spin_lock_irqsave(&session->lock, flags);
1883         if (session->state == ISCSI_SESSION_FAILED)
1884                 ret = BLK_EH_RESET_TIMER;
1885         spin_unlock_irqrestore(&session->lock, flags);
1886
1887         return ret;
1888 }
1889
1890 static void qla4xxx_set_port_speed(struct Scsi_Host *shost)
1891 {
1892         struct scsi_qla_host *ha = to_qla_host(shost);
1893         struct iscsi_cls_host *ihost = shost->shost_data;
1894         uint32_t speed = ISCSI_PORT_SPEED_UNKNOWN;
1895
1896         qla4xxx_get_firmware_state(ha);
1897
1898         switch (ha->addl_fw_state & 0x0F00) {
1899         case FW_ADDSTATE_LINK_SPEED_10MBPS:
1900                 speed = ISCSI_PORT_SPEED_10MBPS;
1901                 break;
1902         case FW_ADDSTATE_LINK_SPEED_100MBPS:
1903                 speed = ISCSI_PORT_SPEED_100MBPS;
1904                 break;
1905         case FW_ADDSTATE_LINK_SPEED_1GBPS:
1906                 speed = ISCSI_PORT_SPEED_1GBPS;
1907                 break;
1908         case FW_ADDSTATE_LINK_SPEED_10GBPS:
1909                 speed = ISCSI_PORT_SPEED_10GBPS;
1910                 break;
1911         }
1912         ihost->port_speed = speed;
1913 }
1914
1915 static void qla4xxx_set_port_state(struct Scsi_Host *shost)
1916 {
1917         struct scsi_qla_host *ha = to_qla_host(shost);
1918         struct iscsi_cls_host *ihost = shost->shost_data;
1919         uint32_t state = ISCSI_PORT_STATE_DOWN;
1920
1921         if (test_bit(AF_LINK_UP, &ha->flags))
1922                 state = ISCSI_PORT_STATE_UP;
1923
1924         ihost->port_state = state;
1925 }
1926
1927 static int qla4xxx_host_get_param(struct Scsi_Host *shost,
1928                                   enum iscsi_host_param param, char *buf)
1929 {
1930         struct scsi_qla_host *ha = to_qla_host(shost);
1931         int len;
1932
1933         switch (param) {
1934         case ISCSI_HOST_PARAM_HWADDRESS:
1935                 len = sysfs_format_mac(buf, ha->my_mac, MAC_ADDR_LEN);
1936                 break;
1937         case ISCSI_HOST_PARAM_IPADDRESS:
1938                 len = sprintf(buf, "%pI4\n", &ha->ip_config.ip_address);
1939                 break;
1940         case ISCSI_HOST_PARAM_INITIATOR_NAME:
1941                 len = sprintf(buf, "%s\n", ha->name_string);
1942                 break;
1943         case ISCSI_HOST_PARAM_PORT_STATE:
1944                 qla4xxx_set_port_state(shost);
1945                 len = sprintf(buf, "%s\n", iscsi_get_port_state_name(shost));
1946                 break;
1947         case ISCSI_HOST_PARAM_PORT_SPEED:
1948                 qla4xxx_set_port_speed(shost);
1949                 len = sprintf(buf, "%s\n", iscsi_get_port_speed_name(shost));
1950                 break;
1951         default:
1952                 return -ENOSYS;
1953         }
1954
1955         return len;
1956 }
1957
1958 static void qla4xxx_create_ipv4_iface(struct scsi_qla_host *ha)
1959 {
1960         if (ha->iface_ipv4)
1961                 return;
1962
1963         /* IPv4 */
1964         ha->iface_ipv4 = iscsi_create_iface(ha->host,
1965                                             &qla4xxx_iscsi_transport,
1966                                             ISCSI_IFACE_TYPE_IPV4, 0, 0);
1967         if (!ha->iface_ipv4)
1968                 ql4_printk(KERN_ERR, ha, "Could not create IPv4 iSCSI "
1969                            "iface0.\n");
1970 }
1971
1972 static void qla4xxx_create_ipv6_iface(struct scsi_qla_host *ha)
1973 {
1974         if (!ha->iface_ipv6_0)
1975                 /* IPv6 iface-0 */
1976                 ha->iface_ipv6_0 = iscsi_create_iface(ha->host,
1977                                                       &qla4xxx_iscsi_transport,
1978                                                       ISCSI_IFACE_TYPE_IPV6, 0,
1979                                                       0);
1980         if (!ha->iface_ipv6_0)
1981                 ql4_printk(KERN_ERR, ha, "Could not create IPv6 iSCSI "
1982                            "iface0.\n");
1983
1984         if (!ha->iface_ipv6_1)
1985                 /* IPv6 iface-1 */
1986                 ha->iface_ipv6_1 = iscsi_create_iface(ha->host,
1987                                                       &qla4xxx_iscsi_transport,
1988                                                       ISCSI_IFACE_TYPE_IPV6, 1,
1989                                                       0);
1990         if (!ha->iface_ipv6_1)
1991                 ql4_printk(KERN_ERR, ha, "Could not create IPv6 iSCSI "
1992                            "iface1.\n");
1993 }
1994
1995 static void qla4xxx_create_ifaces(struct scsi_qla_host *ha)
1996 {
1997         if (ha->ip_config.ipv4_options & IPOPT_IPV4_PROTOCOL_ENABLE)
1998                 qla4xxx_create_ipv4_iface(ha);
1999
2000         if (ha->ip_config.ipv6_options & IPV6_OPT_IPV6_PROTOCOL_ENABLE)
2001                 qla4xxx_create_ipv6_iface(ha);
2002 }
2003
2004 static void qla4xxx_destroy_ipv4_iface(struct scsi_qla_host *ha)
2005 {
2006         if (ha->iface_ipv4) {
2007                 iscsi_destroy_iface(ha->iface_ipv4);
2008                 ha->iface_ipv4 = NULL;
2009         }
2010 }
2011
2012 static void qla4xxx_destroy_ipv6_iface(struct scsi_qla_host *ha)
2013 {
2014         if (ha->iface_ipv6_0) {
2015                 iscsi_destroy_iface(ha->iface_ipv6_0);
2016                 ha->iface_ipv6_0 = NULL;
2017         }
2018         if (ha->iface_ipv6_1) {
2019                 iscsi_destroy_iface(ha->iface_ipv6_1);
2020                 ha->iface_ipv6_1 = NULL;
2021         }
2022 }
2023
2024 static void qla4xxx_destroy_ifaces(struct scsi_qla_host *ha)
2025 {
2026         qla4xxx_destroy_ipv4_iface(ha);
2027         qla4xxx_destroy_ipv6_iface(ha);
2028 }
2029
2030 static void qla4xxx_set_ipv6(struct scsi_qla_host *ha,
2031                              struct iscsi_iface_param_info *iface_param,
2032                              struct addr_ctrl_blk *init_fw_cb)
2033 {
2034         /*
2035          * iface_num 0 is valid for IPv6 Addr, linklocal, router, autocfg.
2036          * iface_num 1 is valid only for IPv6 Addr.
2037          */
2038         switch (iface_param->param) {
2039         case ISCSI_NET_PARAM_IPV6_ADDR:
2040                 if (iface_param->iface_num & 0x1)
2041                         /* IPv6 Addr 1 */
2042                         memcpy(init_fw_cb->ipv6_addr1, iface_param->value,
2043                                sizeof(init_fw_cb->ipv6_addr1));
2044                 else
2045                         /* IPv6 Addr 0 */
2046                         memcpy(init_fw_cb->ipv6_addr0, iface_param->value,
2047                                sizeof(init_fw_cb->ipv6_addr0));
2048                 break;
2049         case ISCSI_NET_PARAM_IPV6_LINKLOCAL:
2050                 if (iface_param->iface_num & 0x1)
2051                         break;
2052                 memcpy(init_fw_cb->ipv6_if_id, &iface_param->value[8],
2053                        sizeof(init_fw_cb->ipv6_if_id));
2054                 break;
2055         case ISCSI_NET_PARAM_IPV6_ROUTER:
2056                 if (iface_param->iface_num & 0x1)
2057                         break;
2058                 memcpy(init_fw_cb->ipv6_dflt_rtr_addr, iface_param->value,
2059                        sizeof(init_fw_cb->ipv6_dflt_rtr_addr));
2060                 break;
2061         case ISCSI_NET_PARAM_IPV6_ADDR_AUTOCFG:
2062                 /* Autocfg applies to even interface */
2063                 if (iface_param->iface_num & 0x1)
2064                         break;
2065
2066                 if (iface_param->value[0] == ISCSI_IPV6_AUTOCFG_DISABLE)
2067                         init_fw_cb->ipv6_addtl_opts &=
2068                                 cpu_to_le16(
2069                                   ~IPV6_ADDOPT_NEIGHBOR_DISCOVERY_ADDR_ENABLE);
2070                 else if (iface_param->value[0] == ISCSI_IPV6_AUTOCFG_ND_ENABLE)
2071                         init_fw_cb->ipv6_addtl_opts |=
2072                                 cpu_to_le16(
2073                                   IPV6_ADDOPT_NEIGHBOR_DISCOVERY_ADDR_ENABLE);
2074                 else
2075                         ql4_printk(KERN_ERR, ha,
2076                                    "Invalid autocfg setting for IPv6 addr\n");
2077                 break;
2078         case ISCSI_NET_PARAM_IPV6_LINKLOCAL_AUTOCFG:
2079                 /* Autocfg applies to even interface */
2080                 if (iface_param->iface_num & 0x1)
2081                         break;
2082
2083                 if (iface_param->value[0] ==
2084                     ISCSI_IPV6_LINKLOCAL_AUTOCFG_ENABLE)
2085                         init_fw_cb->ipv6_addtl_opts |= cpu_to_le16(
2086                                         IPV6_ADDOPT_AUTOCONFIG_LINK_LOCAL_ADDR);
2087                 else if (iface_param->value[0] ==
2088                          ISCSI_IPV6_LINKLOCAL_AUTOCFG_DISABLE)
2089                         init_fw_cb->ipv6_addtl_opts &= cpu_to_le16(
2090                                        ~IPV6_ADDOPT_AUTOCONFIG_LINK_LOCAL_ADDR);
2091                 else
2092                         ql4_printk(KERN_ERR, ha,
2093                                    "Invalid autocfg setting for IPv6 linklocal addr\n");
2094                 break;
2095         case ISCSI_NET_PARAM_IPV6_ROUTER_AUTOCFG:
2096                 /* Autocfg applies to even interface */
2097                 if (iface_param->iface_num & 0x1)
2098                         break;
2099
2100                 if (iface_param->value[0] == ISCSI_IPV6_ROUTER_AUTOCFG_ENABLE)
2101                         memset(init_fw_cb->ipv6_dflt_rtr_addr, 0,
2102                                sizeof(init_fw_cb->ipv6_dflt_rtr_addr));
2103                 break;
2104         case ISCSI_NET_PARAM_IFACE_ENABLE:
2105                 if (iface_param->value[0] == ISCSI_IFACE_ENABLE) {
2106                         init_fw_cb->ipv6_opts |=
2107                                 cpu_to_le16(IPV6_OPT_IPV6_PROTOCOL_ENABLE);
2108                         qla4xxx_create_ipv6_iface(ha);
2109                 } else {
2110                         init_fw_cb->ipv6_opts &=
2111                                 cpu_to_le16(~IPV6_OPT_IPV6_PROTOCOL_ENABLE &
2112                                             0xFFFF);
2113                         qla4xxx_destroy_ipv6_iface(ha);
2114                 }
2115                 break;
2116         case ISCSI_NET_PARAM_VLAN_TAG:
2117                 if (iface_param->len != sizeof(init_fw_cb->ipv6_vlan_tag))
2118                         break;
2119                 init_fw_cb->ipv6_vlan_tag =
2120                                 cpu_to_be16(*(uint16_t *)iface_param->value);
2121                 break;
2122         case ISCSI_NET_PARAM_VLAN_ENABLED:
2123                 if (iface_param->value[0] == ISCSI_VLAN_ENABLE)
2124                         init_fw_cb->ipv6_opts |=
2125                                 cpu_to_le16(IPV6_OPT_VLAN_TAGGING_ENABLE);
2126                 else
2127                         init_fw_cb->ipv6_opts &=
2128                                 cpu_to_le16(~IPV6_OPT_VLAN_TAGGING_ENABLE);
2129                 break;
2130         case ISCSI_NET_PARAM_MTU:
2131                 init_fw_cb->eth_mtu_size =
2132                                 cpu_to_le16(*(uint16_t *)iface_param->value);
2133                 break;
2134         case ISCSI_NET_PARAM_PORT:
2135                 /* Autocfg applies to even interface */
2136                 if (iface_param->iface_num & 0x1)
2137                         break;
2138
2139                 init_fw_cb->ipv6_port =
2140                                 cpu_to_le16(*(uint16_t *)iface_param->value);
2141                 break;
2142         case ISCSI_NET_PARAM_DELAYED_ACK_EN:
2143                 if (iface_param->iface_num & 0x1)
2144                         break;
2145                 if (iface_param->value[0] == ISCSI_NET_PARAM_DISABLE)
2146                         init_fw_cb->ipv6_tcp_opts |=
2147                                 cpu_to_le16(IPV6_TCPOPT_DELAYED_ACK_DISABLE);
2148                 else
2149                         init_fw_cb->ipv6_tcp_opts &=
2150                                 cpu_to_le16(~IPV6_TCPOPT_DELAYED_ACK_DISABLE &
2151                                             0xFFFF);
2152                 break;
2153         case ISCSI_NET_PARAM_TCP_NAGLE_DISABLE:
2154                 if (iface_param->iface_num & 0x1)
2155                         break;
2156                 if (iface_param->value[0] == ISCSI_NET_PARAM_DISABLE)
2157                         init_fw_cb->ipv6_tcp_opts |=
2158                                 cpu_to_le16(IPV6_TCPOPT_NAGLE_ALGO_DISABLE);
2159                 else
2160                         init_fw_cb->ipv6_tcp_opts &=
2161                                 cpu_to_le16(~IPV6_TCPOPT_NAGLE_ALGO_DISABLE);
2162                 break;
2163         case ISCSI_NET_PARAM_TCP_WSF_DISABLE:
2164                 if (iface_param->iface_num & 0x1)
2165                         break;
2166                 if (iface_param->value[0] == ISCSI_NET_PARAM_DISABLE)
2167                         init_fw_cb->ipv6_tcp_opts |=
2168                                 cpu_to_le16(IPV6_TCPOPT_WINDOW_SCALE_DISABLE);
2169                 else
2170                         init_fw_cb->ipv6_tcp_opts &=
2171                                 cpu_to_le16(~IPV6_TCPOPT_WINDOW_SCALE_DISABLE);
2172                 break;
2173         case ISCSI_NET_PARAM_TCP_WSF:
2174                 if (iface_param->iface_num & 0x1)
2175                         break;
2176                 init_fw_cb->ipv6_tcp_wsf = iface_param->value[0];
2177                 break;
2178         case ISCSI_NET_PARAM_TCP_TIMER_SCALE:
2179                 if (iface_param->iface_num & 0x1)
2180                         break;
2181                 init_fw_cb->ipv6_tcp_opts &=
2182                                         cpu_to_le16(~IPV6_TCPOPT_TIMER_SCALE);
2183                 init_fw_cb->ipv6_tcp_opts |=
2184                                 cpu_to_le16((iface_param->value[0] << 1) &
2185                                             IPV6_TCPOPT_TIMER_SCALE);
2186                 break;
2187         case ISCSI_NET_PARAM_TCP_TIMESTAMP_EN:
2188                 if (iface_param->iface_num & 0x1)
2189                         break;
2190                 if (iface_param->value[0] == ISCSI_NET_PARAM_ENABLE)
2191                         init_fw_cb->ipv6_tcp_opts |=
2192                                 cpu_to_le16(IPV6_TCPOPT_TIMESTAMP_EN);
2193                 else
2194                         init_fw_cb->ipv6_tcp_opts &=
2195                                 cpu_to_le16(~IPV6_TCPOPT_TIMESTAMP_EN);
2196                 break;
2197         case ISCSI_NET_PARAM_IPV6_GRAT_NEIGHBOR_ADV_EN:
2198                 if (iface_param->iface_num & 0x1)
2199                         break;
2200                 if (iface_param->value[0] == ISCSI_NET_PARAM_ENABLE)
2201                         init_fw_cb->ipv6_opts |=
2202                                 cpu_to_le16(IPV6_OPT_GRAT_NEIGHBOR_ADV_EN);
2203                 else
2204                         init_fw_cb->ipv6_opts &=
2205                                 cpu_to_le16(~IPV6_OPT_GRAT_NEIGHBOR_ADV_EN);
2206                 break;
2207         case ISCSI_NET_PARAM_REDIRECT_EN:
2208                 if (iface_param->iface_num & 0x1)
2209                         break;
2210                 if (iface_param->value[0] == ISCSI_NET_PARAM_ENABLE)
2211                         init_fw_cb->ipv6_opts |=
2212                                 cpu_to_le16(IPV6_OPT_REDIRECT_EN);
2213                 else
2214                         init_fw_cb->ipv6_opts &=
2215                                 cpu_to_le16(~IPV6_OPT_REDIRECT_EN);
2216                 break;
2217         case ISCSI_NET_PARAM_IPV6_MLD_EN:
2218                 if (iface_param->iface_num & 0x1)
2219                         break;
2220                 if (iface_param->value[0] == ISCSI_NET_PARAM_ENABLE)
2221                         init_fw_cb->ipv6_addtl_opts |=
2222                                 cpu_to_le16(IPV6_ADDOPT_MLD_EN);
2223                 else
2224                         init_fw_cb->ipv6_addtl_opts &=
2225                                 cpu_to_le16(~IPV6_ADDOPT_MLD_EN);
2226                 break;
2227         case ISCSI_NET_PARAM_IPV6_FLOW_LABEL:
2228                 if (iface_param->iface_num & 0x1)
2229                         break;
2230                 init_fw_cb->ipv6_flow_lbl =
2231                                 cpu_to_le16(*(uint16_t *)iface_param->value);
2232                 break;
2233         case ISCSI_NET_PARAM_IPV6_TRAFFIC_CLASS:
2234                 if (iface_param->iface_num & 0x1)
2235                         break;
2236                 init_fw_cb->ipv6_traffic_class = iface_param->value[0];
2237                 break;
2238         case ISCSI_NET_PARAM_IPV6_HOP_LIMIT:
2239                 if (iface_param->iface_num & 0x1)
2240                         break;
2241                 init_fw_cb->ipv6_hop_limit = iface_param->value[0];
2242                 break;
2243         case ISCSI_NET_PARAM_IPV6_ND_REACHABLE_TMO:
2244                 if (iface_param->iface_num & 0x1)
2245                         break;
2246                 init_fw_cb->ipv6_nd_reach_time =
2247                                 cpu_to_le32(*(uint32_t *)iface_param->value);
2248                 break;
2249         case ISCSI_NET_PARAM_IPV6_ND_REXMIT_TIME:
2250                 if (iface_param->iface_num & 0x1)
2251                         break;
2252                 init_fw_cb->ipv6_nd_rexmit_timer =
2253                                 cpu_to_le32(*(uint32_t *)iface_param->value);
2254                 break;
2255         case ISCSI_NET_PARAM_IPV6_ND_STALE_TMO:
2256                 if (iface_param->iface_num & 0x1)
2257                         break;
2258                 init_fw_cb->ipv6_nd_stale_timeout =
2259                                 cpu_to_le32(*(uint32_t *)iface_param->value);
2260                 break;
2261         case ISCSI_NET_PARAM_IPV6_DUP_ADDR_DETECT_CNT:
2262                 if (iface_param->iface_num & 0x1)
2263                         break;
2264                 init_fw_cb->ipv6_dup_addr_detect_count = iface_param->value[0];
2265                 break;
2266         case ISCSI_NET_PARAM_IPV6_RTR_ADV_LINK_MTU:
2267                 if (iface_param->iface_num & 0x1)
2268                         break;
2269                 init_fw_cb->ipv6_gw_advrt_mtu =
2270                                 cpu_to_le32(*(uint32_t *)iface_param->value);
2271                 break;
2272         default:
2273                 ql4_printk(KERN_ERR, ha, "Unknown IPv6 param = %d\n",
2274                            iface_param->param);
2275                 break;
2276         }
2277 }
2278
2279 static void qla4xxx_set_ipv4(struct scsi_qla_host *ha,
2280                              struct iscsi_iface_param_info *iface_param,
2281                              struct addr_ctrl_blk *init_fw_cb)
2282 {
2283         switch (iface_param->param) {
2284         case ISCSI_NET_PARAM_IPV4_ADDR:
2285                 memcpy(init_fw_cb->ipv4_addr, iface_param->value,
2286                        sizeof(init_fw_cb->ipv4_addr));
2287                 break;
2288         case ISCSI_NET_PARAM_IPV4_SUBNET:
2289                 memcpy(init_fw_cb->ipv4_subnet, iface_param->value,
2290                        sizeof(init_fw_cb->ipv4_subnet));
2291                 break;
2292         case ISCSI_NET_PARAM_IPV4_GW:
2293                 memcpy(init_fw_cb->ipv4_gw_addr, iface_param->value,
2294                        sizeof(init_fw_cb->ipv4_gw_addr));
2295                 break;
2296         case ISCSI_NET_PARAM_IPV4_BOOTPROTO:
2297                 if (iface_param->value[0] == ISCSI_BOOTPROTO_DHCP)
2298                         init_fw_cb->ipv4_tcp_opts |=
2299                                         cpu_to_le16(TCPOPT_DHCP_ENABLE);
2300                 else if (iface_param->value[0] == ISCSI_BOOTPROTO_STATIC)
2301                         init_fw_cb->ipv4_tcp_opts &=
2302                                         cpu_to_le16(~TCPOPT_DHCP_ENABLE);
2303                 else
2304                         ql4_printk(KERN_ERR, ha, "Invalid IPv4 bootproto\n");
2305                 break;
2306         case ISCSI_NET_PARAM_IFACE_ENABLE:
2307                 if (iface_param->value[0] == ISCSI_IFACE_ENABLE) {
2308                         init_fw_cb->ipv4_ip_opts |=
2309                                 cpu_to_le16(IPOPT_IPV4_PROTOCOL_ENABLE);
2310                         qla4xxx_create_ipv4_iface(ha);
2311                 } else {
2312                         init_fw_cb->ipv4_ip_opts &=
2313                                 cpu_to_le16(~IPOPT_IPV4_PROTOCOL_ENABLE &
2314                                             0xFFFF);
2315                         qla4xxx_destroy_ipv4_iface(ha);
2316                 }
2317                 break;
2318         case ISCSI_NET_PARAM_VLAN_TAG:
2319                 if (iface_param->len != sizeof(init_fw_cb->ipv4_vlan_tag))
2320                         break;
2321                 init_fw_cb->ipv4_vlan_tag =
2322                                 cpu_to_be16(*(uint16_t *)iface_param->value);
2323                 break;
2324         case ISCSI_NET_PARAM_VLAN_ENABLED:
2325                 if (iface_param->value[0] == ISCSI_VLAN_ENABLE)
2326                         init_fw_cb->ipv4_ip_opts |=
2327                                         cpu_to_le16(IPOPT_VLAN_TAGGING_ENABLE);
2328                 else
2329                         init_fw_cb->ipv4_ip_opts &=
2330                                         cpu_to_le16(~IPOPT_VLAN_TAGGING_ENABLE);
2331                 break;
2332         case ISCSI_NET_PARAM_MTU:
2333                 init_fw_cb->eth_mtu_size =
2334                                 cpu_to_le16(*(uint16_t *)iface_param->value);
2335                 break;
2336         case ISCSI_NET_PARAM_PORT:
2337                 init_fw_cb->ipv4_port =
2338                                 cpu_to_le16(*(uint16_t *)iface_param->value);
2339                 break;
2340         case ISCSI_NET_PARAM_DELAYED_ACK_EN:
2341                 if (iface_param->iface_num & 0x1)
2342                         break;
2343                 if (iface_param->value[0] == ISCSI_NET_PARAM_DISABLE)
2344                         init_fw_cb->ipv4_tcp_opts |=
2345                                 cpu_to_le16(TCPOPT_DELAYED_ACK_DISABLE);
2346                 else
2347                         init_fw_cb->ipv4_tcp_opts &=
2348                                 cpu_to_le16(~TCPOPT_DELAYED_ACK_DISABLE &
2349                                             0xFFFF);
2350                 break;
2351         case ISCSI_NET_PARAM_TCP_NAGLE_DISABLE:
2352                 if (iface_param->iface_num & 0x1)
2353                         break;
2354                 if (iface_param->value[0] == ISCSI_NET_PARAM_DISABLE)
2355                         init_fw_cb->ipv4_tcp_opts |=
2356                                 cpu_to_le16(TCPOPT_NAGLE_ALGO_DISABLE);
2357                 else
2358                         init_fw_cb->ipv4_tcp_opts &=
2359                                 cpu_to_le16(~TCPOPT_NAGLE_ALGO_DISABLE);
2360                 break;
2361         case ISCSI_NET_PARAM_TCP_WSF_DISABLE:
2362                 if (iface_param->iface_num & 0x1)
2363                         break;
2364                 if (iface_param->value[0] == ISCSI_NET_PARAM_DISABLE)
2365                         init_fw_cb->ipv4_tcp_opts |=
2366                                 cpu_to_le16(TCPOPT_WINDOW_SCALE_DISABLE);
2367                 else
2368                         init_fw_cb->ipv4_tcp_opts &=
2369                                 cpu_to_le16(~TCPOPT_WINDOW_SCALE_DISABLE);
2370                 break;
2371         case ISCSI_NET_PARAM_TCP_WSF:
2372                 if (iface_param->iface_num & 0x1)
2373                         break;
2374                 init_fw_cb->ipv4_tcp_wsf = iface_param->value[0];
2375                 break;
2376         case ISCSI_NET_PARAM_TCP_TIMER_SCALE:
2377                 if (iface_param->iface_num & 0x1)
2378                         break;
2379                 init_fw_cb->ipv4_tcp_opts &= cpu_to_le16(~TCPOPT_TIMER_SCALE);
2380                 init_fw_cb->ipv4_tcp_opts |=
2381                                 cpu_to_le16((iface_param->value[0] << 1) &
2382                                             TCPOPT_TIMER_SCALE);
2383                 break;
2384         case ISCSI_NET_PARAM_TCP_TIMESTAMP_EN:
2385                 if (iface_param->iface_num & 0x1)
2386                         break;
2387                 if (iface_param->value[0] == ISCSI_NET_PARAM_ENABLE)
2388                         init_fw_cb->ipv4_tcp_opts |=
2389                                 cpu_to_le16(TCPOPT_TIMESTAMP_ENABLE);
2390                 else
2391                         init_fw_cb->ipv4_tcp_opts &=
2392                                 cpu_to_le16(~TCPOPT_TIMESTAMP_ENABLE);
2393                 break;
2394         case ISCSI_NET_PARAM_IPV4_DHCP_DNS_ADDR_EN:
2395                 if (iface_param->iface_num & 0x1)
2396                         break;
2397                 if (iface_param->value[0] == ISCSI_NET_PARAM_ENABLE)
2398                         init_fw_cb->ipv4_tcp_opts |=
2399                                 cpu_to_le16(TCPOPT_DNS_SERVER_IP_EN);
2400                 else
2401                         init_fw_cb->ipv4_tcp_opts &=
2402                                 cpu_to_le16(~TCPOPT_DNS_SERVER_IP_EN);
2403                 break;
2404         case ISCSI_NET_PARAM_IPV4_DHCP_SLP_DA_EN:
2405                 if (iface_param->iface_num & 0x1)
2406                         break;
2407                 if (iface_param->value[0] == ISCSI_NET_PARAM_ENABLE)
2408                         init_fw_cb->ipv4_tcp_opts |=
2409                                 cpu_to_le16(TCPOPT_SLP_DA_INFO_EN);
2410                 else
2411                         init_fw_cb->ipv4_tcp_opts &=
2412                                 cpu_to_le16(~TCPOPT_SLP_DA_INFO_EN);
2413                 break;
2414         case ISCSI_NET_PARAM_IPV4_TOS_EN:
2415                 if (iface_param->iface_num & 0x1)
2416                         break;
2417                 if (iface_param->value[0] == ISCSI_NET_PARAM_ENABLE)
2418                         init_fw_cb->ipv4_ip_opts |=
2419                                 cpu_to_le16(IPOPT_IPV4_TOS_EN);
2420                 else
2421                         init_fw_cb->ipv4_ip_opts &=
2422                                 cpu_to_le16(~IPOPT_IPV4_TOS_EN);
2423                 break;
2424         case ISCSI_NET_PARAM_IPV4_TOS:
2425                 if (iface_param->iface_num & 0x1)
2426                         break;
2427                 init_fw_cb->ipv4_tos = iface_param->value[0];
2428                 break;
2429         case ISCSI_NET_PARAM_IPV4_GRAT_ARP_EN:
2430                 if (iface_param->iface_num & 0x1)
2431                         break;
2432                 if (iface_param->value[0] == ISCSI_NET_PARAM_ENABLE)
2433                         init_fw_cb->ipv4_ip_opts |=
2434                                         cpu_to_le16(IPOPT_GRAT_ARP_EN);
2435                 else
2436                         init_fw_cb->ipv4_ip_opts &=
2437                                         cpu_to_le16(~IPOPT_GRAT_ARP_EN);
2438                 break;
2439         case ISCSI_NET_PARAM_IPV4_DHCP_ALT_CLIENT_ID_EN:
2440                 if (iface_param->iface_num & 0x1)
2441                         break;
2442                 if (iface_param->value[0] == ISCSI_NET_PARAM_ENABLE)
2443                         init_fw_cb->ipv4_ip_opts |=
2444                                 cpu_to_le16(IPOPT_ALT_CID_EN);
2445                 else
2446                         init_fw_cb->ipv4_ip_opts &=
2447                                 cpu_to_le16(~IPOPT_ALT_CID_EN);
2448                 break;
2449         case ISCSI_NET_PARAM_IPV4_DHCP_ALT_CLIENT_ID:
2450                 if (iface_param->iface_num & 0x1)
2451                         break;
2452                 memcpy(init_fw_cb->ipv4_dhcp_alt_cid, iface_param->value,
2453                        (sizeof(init_fw_cb->ipv4_dhcp_alt_cid) - 1));
2454                 init_fw_cb->ipv4_dhcp_alt_cid_len =
2455                                         strlen(init_fw_cb->ipv4_dhcp_alt_cid);
2456                 break;
2457         case ISCSI_NET_PARAM_IPV4_DHCP_REQ_VENDOR_ID_EN:
2458                 if (iface_param->iface_num & 0x1)
2459                         break;
2460                 if (iface_param->value[0] == ISCSI_NET_PARAM_ENABLE)
2461                         init_fw_cb->ipv4_ip_opts |=
2462                                         cpu_to_le16(IPOPT_REQ_VID_EN);
2463                 else
2464                         init_fw_cb->ipv4_ip_opts &=
2465                                         cpu_to_le16(~IPOPT_REQ_VID_EN);
2466                 break;
2467         case ISCSI_NET_PARAM_IPV4_DHCP_USE_VENDOR_ID_EN:
2468                 if (iface_param->iface_num & 0x1)
2469                         break;
2470                 if (iface_param->value[0] == ISCSI_NET_PARAM_ENABLE)
2471                         init_fw_cb->ipv4_ip_opts |=
2472                                         cpu_to_le16(IPOPT_USE_VID_EN);
2473                 else
2474                         init_fw_cb->ipv4_ip_opts &=
2475                                         cpu_to_le16(~IPOPT_USE_VID_EN);
2476                 break;
2477         case ISCSI_NET_PARAM_IPV4_DHCP_VENDOR_ID:
2478                 if (iface_param->iface_num & 0x1)
2479                         break;
2480                 memcpy(init_fw_cb->ipv4_dhcp_vid, iface_param->value,
2481                        (sizeof(init_fw_cb->ipv4_dhcp_vid) - 1));
2482                 init_fw_cb->ipv4_dhcp_vid_len =
2483                                         strlen(init_fw_cb->ipv4_dhcp_vid);
2484                 break;
2485         case ISCSI_NET_PARAM_IPV4_DHCP_LEARN_IQN_EN:
2486                 if (iface_param->iface_num & 0x1)
2487                         break;
2488                 if (iface_param->value[0] == ISCSI_NET_PARAM_ENABLE)
2489                         init_fw_cb->ipv4_ip_opts |=
2490                                         cpu_to_le16(IPOPT_LEARN_IQN_EN);
2491                 else
2492                         init_fw_cb->ipv4_ip_opts &=
2493                                         cpu_to_le16(~IPOPT_LEARN_IQN_EN);
2494                 break;
2495         case ISCSI_NET_PARAM_IPV4_FRAGMENT_DISABLE:
2496                 if (iface_param->iface_num & 0x1)
2497                         break;
2498                 if (iface_param->value[0] == ISCSI_NET_PARAM_DISABLE)
2499                         init_fw_cb->ipv4_ip_opts |=
2500                                 cpu_to_le16(IPOPT_FRAGMENTATION_DISABLE);
2501                 else
2502                         init_fw_cb->ipv4_ip_opts &=
2503                                 cpu_to_le16(~IPOPT_FRAGMENTATION_DISABLE);
2504                 break;
2505         case ISCSI_NET_PARAM_IPV4_IN_FORWARD_EN:
2506                 if (iface_param->iface_num & 0x1)
2507                         break;
2508                 if (iface_param->value[0] == ISCSI_NET_PARAM_ENABLE)
2509                         init_fw_cb->ipv4_ip_opts |=
2510                                 cpu_to_le16(IPOPT_IN_FORWARD_EN);
2511                 else
2512                         init_fw_cb->ipv4_ip_opts &=
2513                                 cpu_to_le16(~IPOPT_IN_FORWARD_EN);
2514                 break;
2515         case ISCSI_NET_PARAM_REDIRECT_EN:
2516                 if (iface_param->iface_num & 0x1)
2517                         break;
2518                 if (iface_param->value[0] == ISCSI_NET_PARAM_ENABLE)
2519                         init_fw_cb->ipv4_ip_opts |=
2520                                 cpu_to_le16(IPOPT_ARP_REDIRECT_EN);
2521                 else
2522                         init_fw_cb->ipv4_ip_opts &=
2523                                 cpu_to_le16(~IPOPT_ARP_REDIRECT_EN);
2524                 break;
2525         case ISCSI_NET_PARAM_IPV4_TTL:
2526                 if (iface_param->iface_num & 0x1)
2527                         break;
2528                 init_fw_cb->ipv4_ttl = iface_param->value[0];
2529                 break;
2530         default:
2531                 ql4_printk(KERN_ERR, ha, "Unknown IPv4 param = %d\n",
2532                            iface_param->param);
2533                 break;
2534         }
2535 }
2536
2537 static void qla4xxx_set_iscsi_param(struct scsi_qla_host *ha,
2538                                     struct iscsi_iface_param_info *iface_param,
2539                                     struct addr_ctrl_blk *init_fw_cb)
2540 {
2541         switch (iface_param->param) {
2542         case ISCSI_IFACE_PARAM_DEF_TASKMGMT_TMO:
2543                 if (iface_param->iface_num & 0x1)
2544                         break;
2545                 init_fw_cb->def_timeout =
2546                                 cpu_to_le16(*(uint16_t *)iface_param->value);
2547                 break;
2548         case ISCSI_IFACE_PARAM_HDRDGST_EN:
2549                 if (iface_param->iface_num & 0x1)
2550                         break;
2551                 if (iface_param->value[0] == ISCSI_NET_PARAM_ENABLE)
2552                         init_fw_cb->iscsi_opts |=
2553                                 cpu_to_le16(ISCSIOPTS_HEADER_DIGEST_EN);
2554                 else
2555                         init_fw_cb->iscsi_opts &=
2556                                 cpu_to_le16(~ISCSIOPTS_HEADER_DIGEST_EN);
2557                 break;
2558         case ISCSI_IFACE_PARAM_DATADGST_EN:
2559                 if (iface_param->iface_num & 0x1)
2560                         break;
2561                 if (iface_param->value[0] == ISCSI_NET_PARAM_ENABLE)
2562                         init_fw_cb->iscsi_opts |=
2563                                 cpu_to_le16(ISCSIOPTS_DATA_DIGEST_EN);
2564                 else
2565                         init_fw_cb->iscsi_opts &=
2566                                 cpu_to_le16(~ISCSIOPTS_DATA_DIGEST_EN);
2567                 break;
2568         case ISCSI_IFACE_PARAM_IMM_DATA_EN:
2569                 if (iface_param->iface_num & 0x1)
2570                         break;
2571                 if (iface_param->value[0] == ISCSI_NET_PARAM_ENABLE)
2572                         init_fw_cb->iscsi_opts |=
2573                                 cpu_to_le16(ISCSIOPTS_IMMEDIATE_DATA_EN);
2574                 else
2575                         init_fw_cb->iscsi_opts &=
2576                                 cpu_to_le16(~ISCSIOPTS_IMMEDIATE_DATA_EN);
2577                 break;
2578         case ISCSI_IFACE_PARAM_INITIAL_R2T_EN:
2579                 if (iface_param->iface_num & 0x1)
2580                         break;
2581                 if (iface_param->value[0] == ISCSI_NET_PARAM_ENABLE)
2582                         init_fw_cb->iscsi_opts |=
2583                                 cpu_to_le16(ISCSIOPTS_INITIAL_R2T_EN);
2584                 else
2585                         init_fw_cb->iscsi_opts &=
2586                                 cpu_to_le16(~ISCSIOPTS_INITIAL_R2T_EN);
2587                 break;
2588         case ISCSI_IFACE_PARAM_DATASEQ_INORDER_EN:
2589                 if (iface_param->iface_num & 0x1)
2590                         break;
2591                 if (iface_param->value[0] == ISCSI_NET_PARAM_ENABLE)
2592                         init_fw_cb->iscsi_opts |=
2593                                 cpu_to_le16(ISCSIOPTS_DATA_SEQ_INORDER_EN);
2594                 else
2595                         init_fw_cb->iscsi_opts &=
2596                                 cpu_to_le16(~ISCSIOPTS_DATA_SEQ_INORDER_EN);
2597                 break;
2598         case ISCSI_IFACE_PARAM_PDU_INORDER_EN:
2599                 if (iface_param->iface_num & 0x1)
2600                         break;
2601                 if (iface_param->value[0] == ISCSI_NET_PARAM_ENABLE)
2602                         init_fw_cb->iscsi_opts |=
2603                                 cpu_to_le16(ISCSIOPTS_DATA_PDU_INORDER_EN);
2604                 else
2605                         init_fw_cb->iscsi_opts &=
2606                                 cpu_to_le16(~ISCSIOPTS_DATA_PDU_INORDER_EN);
2607                 break;
2608         case ISCSI_IFACE_PARAM_ERL:
2609                 if (iface_param->iface_num & 0x1)
2610                         break;
2611                 init_fw_cb->iscsi_opts &= cpu_to_le16(~ISCSIOPTS_ERL);
2612                 init_fw_cb->iscsi_opts |= cpu_to_le16(iface_param->value[0] &
2613                                                       ISCSIOPTS_ERL);
2614                 break;
2615         case ISCSI_IFACE_PARAM_MAX_RECV_DLENGTH:
2616                 if (iface_param->iface_num & 0x1)
2617                         break;
2618                 init_fw_cb->iscsi_max_pdu_size =
2619                                 cpu_to_le32(*(uint32_t *)iface_param->value) /
2620                                 BYTE_UNITS;
2621                 break;
2622         case ISCSI_IFACE_PARAM_FIRST_BURST:
2623                 if (iface_param->iface_num & 0x1)
2624                         break;
2625                 init_fw_cb->iscsi_fburst_len =
2626                                 cpu_to_le32(*(uint32_t *)iface_param->value) /
2627                                 BYTE_UNITS;
2628                 break;
2629         case ISCSI_IFACE_PARAM_MAX_R2T:
2630                 if (iface_param->iface_num & 0x1)
2631                         break;
2632                 init_fw_cb->iscsi_max_outstnd_r2t =
2633                                 cpu_to_le16(*(uint16_t *)iface_param->value);
2634                 break;
2635         case ISCSI_IFACE_PARAM_MAX_BURST:
2636                 if (iface_param->iface_num & 0x1)
2637                         break;
2638                 init_fw_cb->iscsi_max_burst_len =
2639                                 cpu_to_le32(*(uint32_t *)iface_param->value) /
2640                                 BYTE_UNITS;
2641                 break;
2642         case ISCSI_IFACE_PARAM_CHAP_AUTH_EN:
2643                 if (iface_param->iface_num & 0x1)
2644                         break;
2645                 if (iface_param->value[0] == ISCSI_NET_PARAM_ENABLE)
2646                         init_fw_cb->iscsi_opts |=
2647                                 cpu_to_le16(ISCSIOPTS_CHAP_AUTH_EN);
2648                 else
2649                         init_fw_cb->iscsi_opts &=
2650                                 cpu_to_le16(~ISCSIOPTS_CHAP_AUTH_EN);
2651                 break;
2652         case ISCSI_IFACE_PARAM_BIDI_CHAP_EN:
2653                 if (iface_param->iface_num & 0x1)
2654                         break;
2655                 if (iface_param->value[0] == ISCSI_NET_PARAM_ENABLE)
2656                         init_fw_cb->iscsi_opts |=
2657                                 cpu_to_le16(ISCSIOPTS_BIDI_CHAP_EN);
2658                 else
2659                         init_fw_cb->iscsi_opts &=
2660                                 cpu_to_le16(~ISCSIOPTS_BIDI_CHAP_EN);
2661                 break;
2662         case ISCSI_IFACE_PARAM_DISCOVERY_AUTH_OPTIONAL:
2663                 if (iface_param->iface_num & 0x1)
2664                         break;
2665                 if (iface_param->value[0] == ISCSI_NET_PARAM_ENABLE)
2666                         init_fw_cb->iscsi_opts |=
2667                                 cpu_to_le16(ISCSIOPTS_DISCOVERY_AUTH_EN);
2668                 else
2669                         init_fw_cb->iscsi_opts &=
2670                                 cpu_to_le16(~ISCSIOPTS_DISCOVERY_AUTH_EN);
2671                 break;
2672         case ISCSI_IFACE_PARAM_DISCOVERY_LOGOUT_EN:
2673                 if (iface_param->iface_num & 0x1)
2674                         break;
2675                 if (iface_param->value[0] == ISCSI_NET_PARAM_ENABLE)
2676                         init_fw_cb->iscsi_opts |=
2677                                 cpu_to_le16(ISCSIOPTS_DISCOVERY_LOGOUT_EN);
2678                 else
2679                         init_fw_cb->iscsi_opts &=
2680                                 cpu_to_le16(~ISCSIOPTS_DISCOVERY_LOGOUT_EN);
2681                 break;
2682         case ISCSI_IFACE_PARAM_STRICT_LOGIN_COMP_EN:
2683                 if (iface_param->iface_num & 0x1)
2684                         break;
2685                 if (iface_param->value[0] == ISCSI_NET_PARAM_ENABLE)
2686                         init_fw_cb->iscsi_opts |=
2687                                 cpu_to_le16(ISCSIOPTS_STRICT_LOGIN_COMP_EN);
2688                 else
2689                         init_fw_cb->iscsi_opts &=
2690                                 cpu_to_le16(~ISCSIOPTS_STRICT_LOGIN_COMP_EN);
2691                 break;
2692         default:
2693                 ql4_printk(KERN_ERR, ha, "Unknown iscsi param = %d\n",
2694                            iface_param->param);
2695                 break;
2696         }
2697 }
2698
2699 static void
2700 qla4xxx_initcb_to_acb(struct addr_ctrl_blk *init_fw_cb)
2701 {
2702         struct addr_ctrl_blk_def *acb;
2703         acb = (struct addr_ctrl_blk_def *)init_fw_cb;
2704         memset(acb->reserved1, 0, sizeof(acb->reserved1));
2705         memset(acb->reserved2, 0, sizeof(acb->reserved2));
2706         memset(acb->reserved3, 0, sizeof(acb->reserved3));
2707         memset(acb->reserved4, 0, sizeof(acb->reserved4));
2708         memset(acb->reserved5, 0, sizeof(acb->reserved5));
2709         memset(acb->reserved6, 0, sizeof(acb->reserved6));
2710         memset(acb->reserved7, 0, sizeof(acb->reserved7));
2711         memset(acb->reserved8, 0, sizeof(acb->reserved8));
2712         memset(acb->reserved9, 0, sizeof(acb->reserved9));
2713         memset(acb->reserved10, 0, sizeof(acb->reserved10));
2714         memset(acb->reserved11, 0, sizeof(acb->reserved11));
2715         memset(acb->reserved12, 0, sizeof(acb->reserved12));
2716         memset(acb->reserved13, 0, sizeof(acb->reserved13));
2717         memset(acb->reserved14, 0, sizeof(acb->reserved14));
2718         memset(acb->reserved15, 0, sizeof(acb->reserved15));
2719 }
2720
2721 static int
2722 qla4xxx_iface_set_param(struct Scsi_Host *shost, void *data, uint32_t len)
2723 {
2724         struct scsi_qla_host *ha = to_qla_host(shost);
2725         int rval = 0;
2726         struct iscsi_iface_param_info *iface_param = NULL;
2727         struct addr_ctrl_blk *init_fw_cb = NULL;
2728         dma_addr_t init_fw_cb_dma;
2729         uint32_t mbox_cmd[MBOX_REG_COUNT];
2730         uint32_t mbox_sts[MBOX_REG_COUNT];
2731         uint32_t rem = len;
2732         struct nlattr *attr;
2733
2734         init_fw_cb = dma_alloc_coherent(&ha->pdev->dev,
2735                                         sizeof(struct addr_ctrl_blk),
2736                                         &init_fw_cb_dma, GFP_KERNEL);
2737         if (!init_fw_cb) {
2738                 ql4_printk(KERN_ERR, ha, "%s: Unable to alloc init_cb\n",
2739                            __func__);
2740                 return -ENOMEM;
2741         }
2742
2743         memset(&mbox_cmd, 0, sizeof(mbox_cmd));
2744         memset(&mbox_sts, 0, sizeof(mbox_sts));
2745
2746         if (qla4xxx_get_ifcb(ha, &mbox_cmd[0], &mbox_sts[0], init_fw_cb_dma)) {
2747                 ql4_printk(KERN_ERR, ha, "%s: get ifcb failed\n", __func__);
2748                 rval = -EIO;
2749                 goto exit_init_fw_cb;
2750         }
2751
2752         nla_for_each_attr(attr, data, len, rem) {
2753                 iface_param = nla_data(attr);
2754
2755                 if (iface_param->param_type == ISCSI_NET_PARAM) {
2756                         switch (iface_param->iface_type) {
2757                         case ISCSI_IFACE_TYPE_IPV4:
2758                                 switch (iface_param->iface_num) {
2759                                 case 0:
2760                                         qla4xxx_set_ipv4(ha, iface_param,
2761                                                          init_fw_cb);
2762                                         break;
2763                                 default:
2764                                 /* Cannot have more than one IPv4 interface */
2765                                         ql4_printk(KERN_ERR, ha,
2766                                                    "Invalid IPv4 iface number = %d\n",
2767                                                    iface_param->iface_num);
2768                                         break;
2769                                 }
2770                                 break;
2771                         case ISCSI_IFACE_TYPE_IPV6:
2772                                 switch (iface_param->iface_num) {
2773                                 case 0:
2774                                 case 1:
2775                                         qla4xxx_set_ipv6(ha, iface_param,
2776                                                          init_fw_cb);
2777                                         break;
2778                                 default:
2779                                 /* Cannot have more than two IPv6 interface */
2780                                         ql4_printk(KERN_ERR, ha,
2781                                                    "Invalid IPv6 iface number = %d\n",
2782                                                    iface_param->iface_num);
2783                                         break;
2784                                 }
2785                                 break;
2786                         default:
2787                                 ql4_printk(KERN_ERR, ha,
2788                                            "Invalid iface type\n");
2789                                 break;
2790                         }
2791                 } else if (iface_param->param_type == ISCSI_IFACE_PARAM) {
2792                                 qla4xxx_set_iscsi_param(ha, iface_param,
2793                                                         init_fw_cb);
2794                 } else {
2795                         continue;
2796                 }
2797         }
2798
2799         init_fw_cb->cookie = cpu_to_le32(0x11BEAD5A);
2800
2801         rval = qla4xxx_set_flash(ha, init_fw_cb_dma, FLASH_SEGMENT_IFCB,
2802                                  sizeof(struct addr_ctrl_blk),
2803                                  FLASH_OPT_RMW_COMMIT);
2804         if (rval != QLA_SUCCESS) {
2805                 ql4_printk(KERN_ERR, ha, "%s: set flash mbx failed\n",
2806                            __func__);
2807                 rval = -EIO;
2808                 goto exit_init_fw_cb;
2809         }
2810
2811         rval = qla4xxx_disable_acb(ha);
2812         if (rval != QLA_SUCCESS) {
2813                 ql4_printk(KERN_ERR, ha, "%s: disable acb mbx failed\n",
2814                            __func__);
2815                 rval = -EIO;
2816                 goto exit_init_fw_cb;
2817         }
2818
2819         wait_for_completion_timeout(&ha->disable_acb_comp,
2820                                     DISABLE_ACB_TOV * HZ);
2821
2822         qla4xxx_initcb_to_acb(init_fw_cb);
2823
2824         rval = qla4xxx_set_acb(ha, &mbox_cmd[0], &mbox_sts[0], init_fw_cb_dma);
2825         if (rval != QLA_SUCCESS) {
2826                 ql4_printk(KERN_ERR, ha, "%s: set acb mbx failed\n",
2827                            __func__);
2828                 rval = -EIO;
2829                 goto exit_init_fw_cb;
2830         }
2831
2832         memset(init_fw_cb, 0, sizeof(struct addr_ctrl_blk));
2833         qla4xxx_update_local_ifcb(ha, &mbox_cmd[0], &mbox_sts[0], init_fw_cb,
2834                                   init_fw_cb_dma);
2835
2836 exit_init_fw_cb:
2837         dma_free_coherent(&ha->pdev->dev, sizeof(struct addr_ctrl_blk),
2838                           init_fw_cb, init_fw_cb_dma);
2839
2840         return rval;
2841 }
2842
2843 static int qla4xxx_session_get_param(struct iscsi_cls_session *cls_sess,
2844                                      enum iscsi_param param, char *buf)
2845 {
2846         struct iscsi_session *sess = cls_sess->dd_data;
2847         struct ddb_entry *ddb_entry = sess->dd_data;
2848         struct scsi_qla_host *ha = ddb_entry->ha;
2849         struct iscsi_cls_conn *cls_conn = ddb_entry->conn;
2850         struct ql4_chap_table chap_tbl;
2851         int rval, len;
2852         uint16_t idx;
2853
2854         memset(&chap_tbl, 0, sizeof(chap_tbl));
2855         switch (param) {
2856         case ISCSI_PARAM_CHAP_IN_IDX:
2857                 rval = qla4xxx_get_chap_index(ha, sess->username_in,
2858                                               sess->password_in, BIDI_CHAP,
2859                                               &idx);
2860                 if (rval)
2861                         len = sprintf(buf, "\n");
2862                 else
2863                         len = sprintf(buf, "%hu\n", idx);
2864                 break;
2865         case ISCSI_PARAM_CHAP_OUT_IDX:
2866                 if (ddb_entry->ddb_type == FLASH_DDB) {
2867                         if (ddb_entry->chap_tbl_idx != INVALID_ENTRY) {
2868                                 idx = ddb_entry->chap_tbl_idx;
2869                                 rval = QLA_SUCCESS;
2870                         } else {
2871                                 rval = QLA_ERROR;
2872                         }
2873                 } else {
2874                         rval = qla4xxx_get_chap_index(ha, sess->username,
2875                                                       sess->password,
2876                                                       LOCAL_CHAP, &idx);
2877                 }
2878                 if (rval)
2879                         len = sprintf(buf, "\n");
2880                 else
2881                         len = sprintf(buf, "%hu\n", idx);
2882                 break;
2883         case ISCSI_PARAM_USERNAME:
2884         case ISCSI_PARAM_PASSWORD:
2885                 /* First, populate session username and password for FLASH DDB,
2886                  * if not already done. This happens when session login fails
2887                  * for a FLASH DDB.
2888                  */
2889                 if (ddb_entry->ddb_type == FLASH_DDB &&
2890                     ddb_entry->chap_tbl_idx != INVALID_ENTRY &&
2891                     !sess->username && !sess->password) {
2892                         idx = ddb_entry->chap_tbl_idx;
2893                         rval = qla4xxx_get_uni_chap_at_index(ha, chap_tbl.name,
2894                                                             chap_tbl.secret,
2895                                                             idx);
2896                         if (!rval) {
2897                                 iscsi_set_param(cls_conn, ISCSI_PARAM_USERNAME,
2898                                                 (char *)chap_tbl.name,
2899                                                 strlen((char *)chap_tbl.name));
2900                                 iscsi_set_param(cls_conn, ISCSI_PARAM_PASSWORD,
2901                                                 (char *)chap_tbl.secret,
2902                                                 chap_tbl.secret_len);
2903                         }
2904                 }
2905                 fallthrough;
2906         default:
2907                 return iscsi_session_get_param(cls_sess, param, buf);
2908         }
2909
2910         return len;
2911 }
2912
2913 static int qla4xxx_conn_get_param(struct iscsi_cls_conn *cls_conn,
2914                                   enum iscsi_param param, char *buf)
2915 {
2916         struct iscsi_conn *conn;
2917         struct qla_conn *qla_conn;
2918         struct sockaddr *dst_addr;
2919
2920         conn = cls_conn->dd_data;
2921         qla_conn = conn->dd_data;
2922         dst_addr = (struct sockaddr *)&qla_conn->qla_ep->dst_addr;
2923
2924         switch (param) {
2925         case ISCSI_PARAM_CONN_PORT:
2926         case ISCSI_PARAM_CONN_ADDRESS:
2927                 return iscsi_conn_get_addr_param((struct sockaddr_storage *)
2928                                                  dst_addr, param, buf);
2929         default:
2930                 return iscsi_conn_get_param(cls_conn, param, buf);
2931         }
2932 }
2933
2934 int qla4xxx_get_ddb_index(struct scsi_qla_host *ha, uint16_t *ddb_index)
2935 {
2936         uint32_t mbx_sts = 0;
2937         uint16_t tmp_ddb_index;
2938         int ret;
2939
2940 get_ddb_index:
2941         tmp_ddb_index = find_first_zero_bit(ha->ddb_idx_map, MAX_DDB_ENTRIES);
2942
2943         if (tmp_ddb_index >= MAX_DDB_ENTRIES) {
2944                 DEBUG2(ql4_printk(KERN_INFO, ha,
2945                                   "Free DDB index not available\n"));
2946                 ret = QLA_ERROR;
2947                 goto exit_get_ddb_index;
2948         }
2949
2950         if (test_and_set_bit(tmp_ddb_index, ha->ddb_idx_map))
2951                 goto get_ddb_index;
2952
2953         DEBUG2(ql4_printk(KERN_INFO, ha,
2954                           "Found a free DDB index at %d\n", tmp_ddb_index));
2955         ret = qla4xxx_req_ddb_entry(ha, tmp_ddb_index, &mbx_sts);
2956         if (ret == QLA_ERROR) {
2957                 if (mbx_sts == MBOX_STS_COMMAND_ERROR) {
2958                         ql4_printk(KERN_INFO, ha,
2959                                    "DDB index = %d not available trying next\n",
2960                                    tmp_ddb_index);
2961                         goto get_ddb_index;
2962                 }
2963                 DEBUG2(ql4_printk(KERN_INFO, ha,
2964                                   "Free FW DDB not available\n"));
2965         }
2966
2967         *ddb_index = tmp_ddb_index;
2968
2969 exit_get_ddb_index:
2970         return ret;
2971 }
2972
2973 static int qla4xxx_match_ipaddress(struct scsi_qla_host *ha,
2974                                    struct ddb_entry *ddb_entry,
2975                                    char *existing_ipaddr,
2976                                    char *user_ipaddr)
2977 {
2978         uint8_t dst_ipaddr[IPv6_ADDR_LEN];
2979         char formatted_ipaddr[DDB_IPADDR_LEN];
2980         int status = QLA_SUCCESS, ret = 0;
2981
2982         if (ddb_entry->fw_ddb_entry.options & DDB_OPT_IPV6_DEVICE) {
2983                 ret = in6_pton(user_ipaddr, strlen(user_ipaddr), dst_ipaddr,
2984                                '\0', NULL);
2985                 if (ret == 0) {
2986                         status = QLA_ERROR;
2987                         goto out_match;
2988                 }
2989                 ret = sprintf(formatted_ipaddr, "%pI6", dst_ipaddr);
2990         } else {
2991                 ret = in4_pton(user_ipaddr, strlen(user_ipaddr), dst_ipaddr,
2992                                '\0', NULL);
2993                 if (ret == 0) {
2994                         status = QLA_ERROR;
2995                         goto out_match;
2996                 }
2997                 ret = sprintf(formatted_ipaddr, "%pI4", dst_ipaddr);
2998         }
2999
3000         if (strcmp(existing_ipaddr, formatted_ipaddr))
3001                 status = QLA_ERROR;
3002
3003 out_match:
3004         return status;
3005 }
3006
3007 static int qla4xxx_match_fwdb_session(struct scsi_qla_host *ha,
3008                                       struct iscsi_cls_conn *cls_conn)
3009 {
3010         int idx = 0, max_ddbs, rval;
3011         struct iscsi_cls_session *cls_sess = iscsi_conn_to_session(cls_conn);
3012         struct iscsi_session *sess, *existing_sess;
3013         struct iscsi_conn *conn, *existing_conn;
3014         struct ddb_entry *ddb_entry;
3015
3016         sess = cls_sess->dd_data;
3017         conn = cls_conn->dd_data;
3018
3019         if (sess->targetname == NULL ||
3020             conn->persistent_address == NULL ||
3021             conn->persistent_port == 0)
3022                 return QLA_ERROR;
3023
3024         max_ddbs =  is_qla40XX(ha) ? MAX_DEV_DB_ENTRIES_40XX :
3025                                      MAX_DEV_DB_ENTRIES;
3026
3027         for (idx = 0; idx < max_ddbs; idx++) {
3028                 ddb_entry = qla4xxx_lookup_ddb_by_fw_index(ha, idx);
3029                 if (ddb_entry == NULL)
3030                         continue;
3031
3032                 if (ddb_entry->ddb_type != FLASH_DDB)
3033                         continue;
3034
3035                 existing_sess = ddb_entry->sess->dd_data;
3036                 existing_conn = ddb_entry->conn->dd_data;
3037
3038                 if (existing_sess->targetname == NULL ||
3039                     existing_conn->persistent_address == NULL ||
3040                     existing_conn->persistent_port == 0)
3041                         continue;
3042
3043                 DEBUG2(ql4_printk(KERN_INFO, ha,
3044                                   "IQN = %s User IQN = %s\n",
3045                                   existing_sess->targetname,
3046                                   sess->targetname));
3047
3048                 DEBUG2(ql4_printk(KERN_INFO, ha,
3049                                   "IP = %s User IP = %s\n",
3050                                   existing_conn->persistent_address,
3051                                   conn->persistent_address));
3052
3053                 DEBUG2(ql4_printk(KERN_INFO, ha,
3054                                   "Port = %d User Port = %d\n",
3055                                   existing_conn->persistent_port,
3056                                   conn->persistent_port));
3057
3058                 if (strcmp(existing_sess->targetname, sess->targetname))
3059                         continue;
3060                 rval = qla4xxx_match_ipaddress(ha, ddb_entry,
3061                                         existing_conn->persistent_address,
3062                                         conn->persistent_address);
3063                 if (rval == QLA_ERROR)
3064                         continue;
3065                 if (existing_conn->persistent_port != conn->persistent_port)
3066                         continue;
3067                 break;
3068         }
3069
3070         if (idx == max_ddbs)
3071                 return QLA_ERROR;
3072
3073         DEBUG2(ql4_printk(KERN_INFO, ha,
3074                           "Match found in fwdb sessions\n"));
3075         return QLA_SUCCESS;
3076 }
3077
3078 static struct iscsi_cls_session *
3079 qla4xxx_session_create(struct iscsi_endpoint *ep,
3080                         uint16_t cmds_max, uint16_t qdepth,
3081                         uint32_t initial_cmdsn)
3082 {
3083         struct iscsi_cls_session *cls_sess;
3084         struct scsi_qla_host *ha;
3085         struct qla_endpoint *qla_ep;
3086         struct ddb_entry *ddb_entry;
3087         uint16_t ddb_index;
3088         struct iscsi_session *sess;
3089         int ret;
3090
3091         if (!ep) {
3092                 printk(KERN_ERR "qla4xxx: missing ep.\n");
3093                 return NULL;
3094         }
3095
3096         qla_ep = ep->dd_data;
3097         ha = to_qla_host(qla_ep->host);
3098         DEBUG2(ql4_printk(KERN_INFO, ha, "%s: host: %ld\n", __func__,
3099                           ha->host_no));
3100
3101         ret = qla4xxx_get_ddb_index(ha, &ddb_index);
3102         if (ret == QLA_ERROR)
3103                 return NULL;
3104
3105         cls_sess = iscsi_session_setup(&qla4xxx_iscsi_transport, qla_ep->host,
3106                                        cmds_max, sizeof(struct ddb_entry),
3107                                        sizeof(struct ql4_task_data),
3108                                        initial_cmdsn, ddb_index);
3109         if (!cls_sess)
3110                 return NULL;
3111
3112         sess = cls_sess->dd_data;
3113         ddb_entry = sess->dd_data;
3114         ddb_entry->fw_ddb_index = ddb_index;
3115         ddb_entry->fw_ddb_device_state = DDB_DS_NO_CONNECTION_ACTIVE;
3116         ddb_entry->ha = ha;
3117         ddb_entry->sess = cls_sess;
3118         ddb_entry->unblock_sess = qla4xxx_unblock_ddb;
3119         ddb_entry->ddb_change = qla4xxx_ddb_change;
3120         clear_bit(DDB_CONN_CLOSE_FAILURE, &ddb_entry->flags);
3121         cls_sess->recovery_tmo = ql4xsess_recovery_tmo;
3122         ha->fw_ddb_index_map[ddb_entry->fw_ddb_index] = ddb_entry;
3123         ha->tot_ddbs++;
3124
3125         return cls_sess;
3126 }
3127
3128 static void qla4xxx_session_destroy(struct iscsi_cls_session *cls_sess)
3129 {
3130         struct iscsi_session *sess;
3131         struct ddb_entry *ddb_entry;
3132         struct scsi_qla_host *ha;
3133         unsigned long flags, wtime;
3134         struct dev_db_entry *fw_ddb_entry = NULL;
3135         dma_addr_t fw_ddb_entry_dma;
3136         uint32_t ddb_state;
3137         int ret;
3138
3139         sess = cls_sess->dd_data;
3140         ddb_entry = sess->dd_data;
3141         ha = ddb_entry->ha;
3142         DEBUG2(ql4_printk(KERN_INFO, ha, "%s: host: %ld\n", __func__,
3143                           ha->host_no));
3144
3145         fw_ddb_entry = dma_alloc_coherent(&ha->pdev->dev, sizeof(*fw_ddb_entry),
3146                                           &fw_ddb_entry_dma, GFP_KERNEL);
3147         if (!fw_ddb_entry) {
3148                 ql4_printk(KERN_ERR, ha,
3149                            "%s: Unable to allocate dma buffer\n", __func__);
3150                 goto destroy_session;
3151         }
3152
3153         wtime = jiffies + (HZ * LOGOUT_TOV);
3154         do {
3155                 ret = qla4xxx_get_fwddb_entry(ha, ddb_entry->fw_ddb_index,
3156                                               fw_ddb_entry, fw_ddb_entry_dma,
3157                                               NULL, NULL, &ddb_state, NULL,
3158                                               NULL, NULL);
3159                 if (ret == QLA_ERROR)
3160                         goto destroy_session;
3161
3162                 if ((ddb_state == DDB_DS_NO_CONNECTION_ACTIVE) ||
3163                     (ddb_state == DDB_DS_SESSION_FAILED))
3164                         goto destroy_session;
3165
3166                 schedule_timeout_uninterruptible(HZ);
3167         } while ((time_after(wtime, jiffies)));
3168
3169 destroy_session:
3170         qla4xxx_clear_ddb_entry(ha, ddb_entry->fw_ddb_index);
3171         if (test_and_clear_bit(DDB_CONN_CLOSE_FAILURE, &ddb_entry->flags))
3172                 clear_bit(ddb_entry->fw_ddb_index, ha->ddb_idx_map);
3173         spin_lock_irqsave(&ha->hardware_lock, flags);
3174         qla4xxx_free_ddb(ha, ddb_entry);
3175         spin_unlock_irqrestore(&ha->hardware_lock, flags);
3176
3177         iscsi_session_teardown(cls_sess);
3178
3179         if (fw_ddb_entry)
3180                 dma_free_coherent(&ha->pdev->dev, sizeof(*fw_ddb_entry),
3181                                   fw_ddb_entry, fw_ddb_entry_dma);
3182 }
3183
3184 static struct iscsi_cls_conn *
3185 qla4xxx_conn_create(struct iscsi_cls_session *cls_sess, uint32_t conn_idx)
3186 {
3187         struct iscsi_cls_conn *cls_conn;
3188         struct iscsi_session *sess;
3189         struct ddb_entry *ddb_entry;
3190         struct scsi_qla_host *ha;
3191
3192         cls_conn = iscsi_conn_setup(cls_sess, sizeof(struct qla_conn),
3193                                     conn_idx);
3194         if (!cls_conn) {
3195                 pr_info("%s: Can not create connection for conn_idx = %u\n",
3196                         __func__, conn_idx);
3197                 return NULL;
3198         }
3199
3200         sess = cls_sess->dd_data;
3201         ddb_entry = sess->dd_data;
3202         ddb_entry->conn = cls_conn;
3203
3204         ha = ddb_entry->ha;
3205         DEBUG2(ql4_printk(KERN_INFO, ha, "%s: conn_idx = %u\n", __func__,
3206                           conn_idx));
3207         return cls_conn;
3208 }
3209
3210 static int qla4xxx_conn_bind(struct iscsi_cls_session *cls_session,
3211                              struct iscsi_cls_conn *cls_conn,
3212                              uint64_t transport_fd, int is_leading)
3213 {
3214         struct iscsi_conn *conn;
3215         struct qla_conn *qla_conn;
3216         struct iscsi_endpoint *ep;
3217         struct ddb_entry *ddb_entry;
3218         struct scsi_qla_host *ha;
3219         struct iscsi_session *sess;
3220
3221         sess = cls_session->dd_data;
3222         ddb_entry = sess->dd_data;
3223         ha = ddb_entry->ha;
3224
3225         DEBUG2(ql4_printk(KERN_INFO, ha, "%s: sid = %d, cid = %d\n", __func__,
3226                           cls_session->sid, cls_conn->cid));
3227
3228         if (iscsi_conn_bind(cls_session, cls_conn, is_leading))
3229                 return -EINVAL;
3230         ep = iscsi_lookup_endpoint(transport_fd);
3231         if (!ep)
3232                 return -EINVAL;
3233         conn = cls_conn->dd_data;
3234         qla_conn = conn->dd_data;
3235         qla_conn->qla_ep = ep->dd_data;
3236         iscsi_put_endpoint(ep);
3237         return 0;
3238 }
3239
3240 static int qla4xxx_conn_start(struct iscsi_cls_conn *cls_conn)
3241 {
3242         struct iscsi_cls_session *cls_sess = iscsi_conn_to_session(cls_conn);
3243         struct iscsi_session *sess;
3244         struct ddb_entry *ddb_entry;
3245         struct scsi_qla_host *ha;
3246         struct dev_db_entry *fw_ddb_entry = NULL;
3247         dma_addr_t fw_ddb_entry_dma;
3248         uint32_t mbx_sts = 0;
3249         int ret = 0;
3250         int status = QLA_SUCCESS;
3251
3252         sess = cls_sess->dd_data;
3253         ddb_entry = sess->dd_data;
3254         ha = ddb_entry->ha;
3255         DEBUG2(ql4_printk(KERN_INFO, ha, "%s: sid = %d, cid = %d\n", __func__,
3256                           cls_sess->sid, cls_conn->cid));
3257
3258         /* Check if we have  matching FW DDB, if yes then do not
3259          * login to this target. This could cause target to logout previous
3260          * connection
3261          */
3262         ret = qla4xxx_match_fwdb_session(ha, cls_conn);
3263         if (ret == QLA_SUCCESS) {
3264                 ql4_printk(KERN_INFO, ha,
3265                            "Session already exist in FW.\n");
3266                 ret = -EEXIST;
3267                 goto exit_conn_start;
3268         }
3269
3270         fw_ddb_entry = dma_alloc_coherent(&ha->pdev->dev, sizeof(*fw_ddb_entry),
3271                                           &fw_ddb_entry_dma, GFP_KERNEL);
3272         if (!fw_ddb_entry) {
3273                 ql4_printk(KERN_ERR, ha,
3274                            "%s: Unable to allocate dma buffer\n", __func__);
3275                 ret = -ENOMEM;
3276                 goto exit_conn_start;
3277         }
3278
3279         ret = qla4xxx_set_param_ddbentry(ha, ddb_entry, cls_conn, &mbx_sts);
3280         if (ret) {
3281                 /* If iscsid is stopped and started then no need to do
3282                 * set param again since ddb state will be already
3283                 * active and FW does not allow set ddb to an
3284                 * active session.
3285                 */
3286                 if (mbx_sts)
3287                         if (ddb_entry->fw_ddb_device_state ==
3288                                                 DDB_DS_SESSION_ACTIVE) {
3289                                 ddb_entry->unblock_sess(ddb_entry->sess);
3290                                 goto exit_set_param;
3291                         }
3292
3293                 ql4_printk(KERN_ERR, ha, "%s: Failed set param for index[%d]\n",
3294                            __func__, ddb_entry->fw_ddb_index);
3295                 goto exit_conn_start;
3296         }
3297
3298         status = qla4xxx_conn_open(ha, ddb_entry->fw_ddb_index);
3299         if (status == QLA_ERROR) {
3300                 ql4_printk(KERN_ERR, ha, "%s: Login failed: %s\n", __func__,
3301                            sess->targetname);
3302                 ret = -EINVAL;
3303                 goto exit_conn_start;
3304         }
3305
3306         if (ddb_entry->fw_ddb_device_state == DDB_DS_NO_CONNECTION_ACTIVE)
3307                 ddb_entry->fw_ddb_device_state = DDB_DS_LOGIN_IN_PROCESS;
3308
3309         DEBUG2(printk(KERN_INFO "%s: DDB state [%d]\n", __func__,
3310                       ddb_entry->fw_ddb_device_state));
3311
3312 exit_set_param:
3313         ret = 0;
3314
3315 exit_conn_start:
3316         if (fw_ddb_entry)
3317                 dma_free_coherent(&ha->pdev->dev, sizeof(*fw_ddb_entry),
3318                                   fw_ddb_entry, fw_ddb_entry_dma);
3319         return ret;
3320 }
3321
3322 static void qla4xxx_conn_destroy(struct iscsi_cls_conn *cls_conn)
3323 {
3324         struct iscsi_cls_session *cls_sess = iscsi_conn_to_session(cls_conn);
3325         struct iscsi_session *sess;
3326         struct scsi_qla_host *ha;
3327         struct ddb_entry *ddb_entry;
3328         int options;
3329
3330         sess = cls_sess->dd_data;
3331         ddb_entry = sess->dd_data;
3332         ha = ddb_entry->ha;
3333         DEBUG2(ql4_printk(KERN_INFO, ha, "%s: cid = %d\n", __func__,
3334                           cls_conn->cid));
3335
3336         options = LOGOUT_OPTION_CLOSE_SESSION;
3337         if (qla4xxx_session_logout_ddb(ha, ddb_entry, options) == QLA_ERROR)
3338                 ql4_printk(KERN_ERR, ha, "%s: Logout failed\n", __func__);
3339 }
3340
3341 static void qla4xxx_task_work(struct work_struct *wdata)
3342 {
3343         struct ql4_task_data *task_data;
3344         struct scsi_qla_host *ha;
3345         struct passthru_status *sts;
3346         struct iscsi_task *task;
3347         struct iscsi_hdr *hdr;
3348         uint8_t *data;
3349         uint32_t data_len;
3350         struct iscsi_conn *conn;
3351         int hdr_len;
3352         itt_t itt;
3353
3354         task_data = container_of(wdata, struct ql4_task_data, task_work);
3355         ha = task_data->ha;
3356         task = task_data->task;
3357         sts = &task_data->sts;
3358         hdr_len = sizeof(struct iscsi_hdr);
3359
3360         DEBUG3(printk(KERN_INFO "Status returned\n"));
3361         DEBUG3(qla4xxx_dump_buffer(sts, 64));
3362         DEBUG3(printk(KERN_INFO "Response buffer"));
3363         DEBUG3(qla4xxx_dump_buffer(task_data->resp_buffer, 64));
3364
3365         conn = task->conn;
3366
3367         switch (sts->completionStatus) {
3368         case PASSTHRU_STATUS_COMPLETE:
3369                 hdr = (struct iscsi_hdr *)task_data->resp_buffer;
3370                 /* Assign back the itt in hdr, until we use the PREASSIGN_TAG */
3371                 itt = sts->handle;
3372                 hdr->itt = itt;
3373                 data = task_data->resp_buffer + hdr_len;
3374                 data_len = task_data->resp_len - hdr_len;
3375                 iscsi_complete_pdu(conn, hdr, data, data_len);
3376                 break;
3377         default:
3378                 ql4_printk(KERN_ERR, ha, "Passthru failed status = 0x%x\n",
3379                            sts->completionStatus);
3380                 break;
3381         }
3382         return;
3383 }
3384
3385 static int qla4xxx_alloc_pdu(struct iscsi_task *task, uint8_t opcode)
3386 {
3387         struct ql4_task_data *task_data;
3388         struct iscsi_session *sess;
3389         struct ddb_entry *ddb_entry;
3390         struct scsi_qla_host *ha;
3391         int hdr_len;
3392
3393         sess = task->conn->session;
3394         ddb_entry = sess->dd_data;
3395         ha = ddb_entry->ha;
3396         task_data = task->dd_data;
3397         memset(task_data, 0, sizeof(struct ql4_task_data));
3398
3399         if (task->sc) {
3400                 ql4_printk(KERN_INFO, ha,
3401                            "%s: SCSI Commands not implemented\n", __func__);
3402                 return -EINVAL;
3403         }
3404
3405         hdr_len = sizeof(struct iscsi_hdr);
3406         task_data->ha = ha;
3407         task_data->task = task;
3408
3409         if (task->data_count) {
3410                 task_data->data_dma = dma_map_single(&ha->pdev->dev, task->data,
3411                                                      task->data_count,
3412                                                      DMA_TO_DEVICE);
3413         }
3414
3415         DEBUG2(ql4_printk(KERN_INFO, ha, "%s: MaxRecvLen %u, iscsi hrd %d\n",
3416                       __func__, task->conn->max_recv_dlength, hdr_len));
3417
3418         task_data->resp_len = task->conn->max_recv_dlength + hdr_len;
3419         task_data->resp_buffer = dma_alloc_coherent(&ha->pdev->dev,
3420                                                     task_data->resp_len,
3421                                                     &task_data->resp_dma,
3422                                                     GFP_ATOMIC);
3423         if (!task_data->resp_buffer)
3424                 goto exit_alloc_pdu;
3425
3426         task_data->req_len = task->data_count + hdr_len;
3427         task_data->req_buffer = dma_alloc_coherent(&ha->pdev->dev,
3428                                                    task_data->req_len,
3429                                                    &task_data->req_dma,
3430                                                    GFP_ATOMIC);
3431         if (!task_data->req_buffer)
3432                 goto exit_alloc_pdu;
3433
3434         task->hdr = task_data->req_buffer;
3435
3436         INIT_WORK(&task_data->task_work, qla4xxx_task_work);
3437
3438         return 0;
3439
3440 exit_alloc_pdu:
3441         if (task_data->resp_buffer)
3442                 dma_free_coherent(&ha->pdev->dev, task_data->resp_len,
3443                                   task_data->resp_buffer, task_data->resp_dma);
3444
3445         if (task_data->req_buffer)
3446                 dma_free_coherent(&ha->pdev->dev, task_data->req_len,
3447                                   task_data->req_buffer, task_data->req_dma);
3448         return -ENOMEM;
3449 }
3450
3451 static void qla4xxx_task_cleanup(struct iscsi_task *task)
3452 {
3453         struct ql4_task_data *task_data;
3454         struct iscsi_session *sess;
3455         struct ddb_entry *ddb_entry;
3456         struct scsi_qla_host *ha;
3457         int hdr_len;
3458
3459         hdr_len = sizeof(struct iscsi_hdr);
3460         sess = task->conn->session;
3461         ddb_entry = sess->dd_data;
3462         ha = ddb_entry->ha;
3463         task_data = task->dd_data;
3464
3465         if (task->data_count) {
3466                 dma_unmap_single(&ha->pdev->dev, task_data->data_dma,
3467                                  task->data_count, DMA_TO_DEVICE);
3468         }
3469
3470         DEBUG2(ql4_printk(KERN_INFO, ha, "%s: MaxRecvLen %u, iscsi hrd %d\n",
3471                       __func__, task->conn->max_recv_dlength, hdr_len));
3472
3473         dma_free_coherent(&ha->pdev->dev, task_data->resp_len,
3474                           task_data->resp_buffer, task_data->resp_dma);
3475         dma_free_coherent(&ha->pdev->dev, task_data->req_len,
3476                           task_data->req_buffer, task_data->req_dma);
3477         return;
3478 }
3479
3480 static int qla4xxx_task_xmit(struct iscsi_task *task)
3481 {
3482         struct scsi_cmnd *sc = task->sc;
3483         struct iscsi_session *sess = task->conn->session;
3484         struct ddb_entry *ddb_entry = sess->dd_data;
3485         struct scsi_qla_host *ha = ddb_entry->ha;
3486
3487         if (!sc)
3488                 return qla4xxx_send_passthru0(task);
3489
3490         ql4_printk(KERN_INFO, ha, "%s: scsi cmd xmit not implemented\n",
3491                    __func__);
3492         return -ENOSYS;
3493 }
3494
3495 static int qla4xxx_copy_from_fwddb_param(struct iscsi_bus_flash_session *sess,
3496                                          struct iscsi_bus_flash_conn *conn,
3497                                          struct dev_db_entry *fw_ddb_entry)
3498 {
3499         unsigned long options = 0;
3500         int rc = 0;
3501
3502         options = le16_to_cpu(fw_ddb_entry->options);
3503         conn->is_fw_assigned_ipv6 = test_bit(OPT_IS_FW_ASSIGNED_IPV6, &options);
3504         if (test_bit(OPT_IPV6_DEVICE, &options)) {
3505                 rc = iscsi_switch_str_param(&sess->portal_type,
3506                                             PORTAL_TYPE_IPV6);
3507                 if (rc)
3508                         goto exit_copy;
3509         } else {
3510                 rc = iscsi_switch_str_param(&sess->portal_type,
3511                                             PORTAL_TYPE_IPV4);
3512                 if (rc)
3513                         goto exit_copy;
3514         }
3515
3516         sess->auto_snd_tgt_disable = test_bit(OPT_AUTO_SENDTGTS_DISABLE,
3517                                               &options);
3518         sess->discovery_sess = test_bit(OPT_DISC_SESSION, &options);
3519         sess->entry_state = test_bit(OPT_ENTRY_STATE, &options);
3520
3521         options = le16_to_cpu(fw_ddb_entry->iscsi_options);
3522         conn->hdrdgst_en = test_bit(ISCSIOPT_HEADER_DIGEST_EN, &options);
3523         conn->datadgst_en = test_bit(ISCSIOPT_DATA_DIGEST_EN, &options);
3524         sess->imm_data_en = test_bit(ISCSIOPT_IMMEDIATE_DATA_EN, &options);
3525         sess->initial_r2t_en = test_bit(ISCSIOPT_INITIAL_R2T_EN, &options);
3526         sess->dataseq_inorder_en = test_bit(ISCSIOPT_DATA_SEQ_IN_ORDER,
3527                                             &options);
3528         sess->pdu_inorder_en = test_bit(ISCSIOPT_DATA_PDU_IN_ORDER, &options);
3529         sess->chap_auth_en = test_bit(ISCSIOPT_CHAP_AUTH_EN, &options);
3530         conn->snack_req_en = test_bit(ISCSIOPT_SNACK_REQ_EN, &options);
3531         sess->discovery_logout_en = test_bit(ISCSIOPT_DISCOVERY_LOGOUT_EN,
3532                                              &options);
3533         sess->bidi_chap_en = test_bit(ISCSIOPT_BIDI_CHAP_EN, &options);
3534         sess->discovery_auth_optional =
3535                         test_bit(ISCSIOPT_DISCOVERY_AUTH_OPTIONAL, &options);
3536         if (test_bit(ISCSIOPT_ERL1, &options))
3537                 sess->erl |= BIT_1;
3538         if (test_bit(ISCSIOPT_ERL0, &options))
3539                 sess->erl |= BIT_0;
3540
3541         options = le16_to_cpu(fw_ddb_entry->tcp_options);
3542         conn->tcp_timestamp_stat = test_bit(TCPOPT_TIMESTAMP_STAT, &options);
3543         conn->tcp_nagle_disable = test_bit(TCPOPT_NAGLE_DISABLE, &options);
3544         conn->tcp_wsf_disable = test_bit(TCPOPT_WSF_DISABLE, &options);
3545         if (test_bit(TCPOPT_TIMER_SCALE3, &options))
3546                 conn->tcp_timer_scale |= BIT_3;
3547         if (test_bit(TCPOPT_TIMER_SCALE2, &options))
3548                 conn->tcp_timer_scale |= BIT_2;
3549         if (test_bit(TCPOPT_TIMER_SCALE1, &options))
3550                 conn->tcp_timer_scale |= BIT_1;
3551
3552         conn->tcp_timer_scale >>= 1;
3553         conn->tcp_timestamp_en = test_bit(TCPOPT_TIMESTAMP_EN, &options);
3554
3555         options = le16_to_cpu(fw_ddb_entry->ip_options);
3556         conn->fragment_disable = test_bit(IPOPT_FRAGMENT_DISABLE, &options);
3557
3558         conn->max_recv_dlength = BYTE_UNITS *
3559                           le16_to_cpu(fw_ddb_entry->iscsi_max_rcv_data_seg_len);
3560         conn->max_xmit_dlength = BYTE_UNITS *
3561                           le16_to_cpu(fw_ddb_entry->iscsi_max_snd_data_seg_len);
3562         sess->first_burst = BYTE_UNITS *
3563                                le16_to_cpu(fw_ddb_entry->iscsi_first_burst_len);
3564         sess->max_burst = BYTE_UNITS *
3565                                  le16_to_cpu(fw_ddb_entry->iscsi_max_burst_len);
3566         sess->max_r2t = le16_to_cpu(fw_ddb_entry->iscsi_max_outsnd_r2t);
3567         sess->time2wait = le16_to_cpu(fw_ddb_entry->iscsi_def_time2wait);
3568         sess->time2retain = le16_to_cpu(fw_ddb_entry->iscsi_def_time2retain);
3569         sess->tpgt = le32_to_cpu(fw_ddb_entry->tgt_portal_grp);
3570         conn->max_segment_size = le16_to_cpu(fw_ddb_entry->mss);
3571         conn->tcp_xmit_wsf = fw_ddb_entry->tcp_xmt_wsf;
3572         conn->tcp_recv_wsf = fw_ddb_entry->tcp_rcv_wsf;
3573         conn->ipv6_flow_label = le16_to_cpu(fw_ddb_entry->ipv6_flow_lbl);
3574         conn->keepalive_timeout = le16_to_cpu(fw_ddb_entry->ka_timeout);
3575         conn->local_port = le16_to_cpu(fw_ddb_entry->lcl_port);
3576         conn->statsn = le32_to_cpu(fw_ddb_entry->stat_sn);
3577         conn->exp_statsn = le32_to_cpu(fw_ddb_entry->exp_stat_sn);
3578         sess->discovery_parent_idx = le16_to_cpu(fw_ddb_entry->ddb_link);
3579         sess->discovery_parent_type = le16_to_cpu(fw_ddb_entry->ddb_link);
3580         sess->chap_out_idx = le16_to_cpu(fw_ddb_entry->chap_tbl_idx);
3581         sess->tsid = le16_to_cpu(fw_ddb_entry->tsid);
3582
3583         sess->default_taskmgmt_timeout =
3584                                 le16_to_cpu(fw_ddb_entry->def_timeout);
3585         conn->port = le16_to_cpu(fw_ddb_entry->port);
3586
3587         options = le16_to_cpu(fw_ddb_entry->options);
3588         conn->ipaddress = kzalloc(IPv6_ADDR_LEN, GFP_KERNEL);
3589         if (!conn->ipaddress) {
3590                 rc = -ENOMEM;
3591                 goto exit_copy;
3592         }
3593
3594         conn->redirect_ipaddr = kzalloc(IPv6_ADDR_LEN, GFP_KERNEL);
3595         if (!conn->redirect_ipaddr) {
3596                 rc = -ENOMEM;
3597                 goto exit_copy;
3598         }
3599
3600         memcpy(conn->ipaddress, fw_ddb_entry->ip_addr, IPv6_ADDR_LEN);
3601         memcpy(conn->redirect_ipaddr, fw_ddb_entry->tgt_addr, IPv6_ADDR_LEN);
3602
3603         if (test_bit(OPT_IPV6_DEVICE, &options)) {
3604                 conn->ipv6_traffic_class = fw_ddb_entry->ipv4_tos;
3605
3606                 conn->link_local_ipv6_addr = kmemdup(
3607                                         fw_ddb_entry->link_local_ipv6_addr,
3608                                         IPv6_ADDR_LEN, GFP_KERNEL);
3609                 if (!conn->link_local_ipv6_addr) {
3610                         rc = -ENOMEM;
3611                         goto exit_copy;
3612                 }
3613         } else {
3614                 conn->ipv4_tos = fw_ddb_entry->ipv4_tos;
3615         }
3616
3617         if (fw_ddb_entry->iscsi_name[0]) {
3618                 rc = iscsi_switch_str_param(&sess->targetname,
3619                                             (char *)fw_ddb_entry->iscsi_name);
3620                 if (rc)
3621                         goto exit_copy;
3622         }
3623
3624         if (fw_ddb_entry->iscsi_alias[0]) {
3625                 rc = iscsi_switch_str_param(&sess->targetalias,
3626                                             (char *)fw_ddb_entry->iscsi_alias);
3627                 if (rc)
3628                         goto exit_copy;
3629         }
3630
3631         COPY_ISID(sess->isid, fw_ddb_entry->isid);
3632
3633 exit_copy:
3634         return rc;
3635 }
3636
3637 static int qla4xxx_copy_to_fwddb_param(struct iscsi_bus_flash_session *sess,
3638                                        struct iscsi_bus_flash_conn *conn,
3639                                        struct dev_db_entry *fw_ddb_entry)
3640 {
3641         uint16_t options;
3642         int rc = 0;
3643
3644         options = le16_to_cpu(fw_ddb_entry->options);
3645         SET_BITVAL(conn->is_fw_assigned_ipv6,  options, BIT_11);
3646         if (!strncmp(sess->portal_type, PORTAL_TYPE_IPV6, 4))
3647                 options |= BIT_8;
3648         else
3649                 options &= ~BIT_8;
3650
3651         SET_BITVAL(sess->auto_snd_tgt_disable, options, BIT_6);
3652         SET_BITVAL(sess->discovery_sess, options, BIT_4);
3653         SET_BITVAL(sess->entry_state, options, BIT_3);
3654         fw_ddb_entry->options = cpu_to_le16(options);
3655
3656         options = le16_to_cpu(fw_ddb_entry->iscsi_options);
3657         SET_BITVAL(conn->hdrdgst_en, options, BIT_13);
3658         SET_BITVAL(conn->datadgst_en, options, BIT_12);
3659         SET_BITVAL(sess->imm_data_en, options, BIT_11);
3660         SET_BITVAL(sess->initial_r2t_en, options, BIT_10);
3661         SET_BITVAL(sess->dataseq_inorder_en, options, BIT_9);
3662         SET_BITVAL(sess->pdu_inorder_en, options, BIT_8);
3663         SET_BITVAL(sess->chap_auth_en, options, BIT_7);
3664         SET_BITVAL(conn->snack_req_en, options, BIT_6);
3665         SET_BITVAL(sess->discovery_logout_en, options, BIT_5);
3666         SET_BITVAL(sess->bidi_chap_en, options, BIT_4);
3667         SET_BITVAL(sess->discovery_auth_optional, options, BIT_3);
3668         SET_BITVAL(sess->erl & BIT_1, options, BIT_1);
3669         SET_BITVAL(sess->erl & BIT_0, options, BIT_0);
3670         fw_ddb_entry->iscsi_options = cpu_to_le16(options);
3671
3672         options = le16_to_cpu(fw_ddb_entry->tcp_options);
3673         SET_BITVAL(conn->tcp_timestamp_stat, options, BIT_6);
3674         SET_BITVAL(conn->tcp_nagle_disable, options, BIT_5);
3675         SET_BITVAL(conn->tcp_wsf_disable, options, BIT_4);
3676         SET_BITVAL(conn->tcp_timer_scale & BIT_2, options, BIT_3);
3677         SET_BITVAL(conn->tcp_timer_scale & BIT_1, options, BIT_2);
3678         SET_BITVAL(conn->tcp_timer_scale & BIT_0, options, BIT_1);
3679         SET_BITVAL(conn->tcp_timestamp_en, options, BIT_0);
3680         fw_ddb_entry->tcp_options = cpu_to_le16(options);
3681
3682         options = le16_to_cpu(fw_ddb_entry->ip_options);
3683         SET_BITVAL(conn->fragment_disable, options, BIT_4);
3684         fw_ddb_entry->ip_options = cpu_to_le16(options);
3685
3686         fw_ddb_entry->iscsi_max_outsnd_r2t = cpu_to_le16(sess->max_r2t);
3687         fw_ddb_entry->iscsi_max_rcv_data_seg_len =
3688                                cpu_to_le16(conn->max_recv_dlength / BYTE_UNITS);
3689         fw_ddb_entry->iscsi_max_snd_data_seg_len =
3690                                cpu_to_le16(conn->max_xmit_dlength / BYTE_UNITS);
3691         fw_ddb_entry->iscsi_first_burst_len =
3692                                 cpu_to_le16(sess->first_burst / BYTE_UNITS);
3693         fw_ddb_entry->iscsi_max_burst_len = cpu_to_le16(sess->max_burst /
3694                                             BYTE_UNITS);
3695         fw_ddb_entry->iscsi_def_time2wait = cpu_to_le16(sess->time2wait);
3696         fw_ddb_entry->iscsi_def_time2retain = cpu_to_le16(sess->time2retain);
3697         fw_ddb_entry->tgt_portal_grp = cpu_to_le16(sess->tpgt);
3698         fw_ddb_entry->mss = cpu_to_le16(conn->max_segment_size);
3699         fw_ddb_entry->tcp_xmt_wsf = (uint8_t) cpu_to_le32(conn->tcp_xmit_wsf);
3700         fw_ddb_entry->tcp_rcv_wsf = (uint8_t) cpu_to_le32(conn->tcp_recv_wsf);
3701         fw_ddb_entry->ipv6_flow_lbl = cpu_to_le16(conn->ipv6_flow_label);
3702         fw_ddb_entry->ka_timeout = cpu_to_le16(conn->keepalive_timeout);
3703         fw_ddb_entry->lcl_port = cpu_to_le16(conn->local_port);
3704         fw_ddb_entry->stat_sn = cpu_to_le32(conn->statsn);
3705         fw_ddb_entry->exp_stat_sn = cpu_to_le32(conn->exp_statsn);
3706         fw_ddb_entry->ddb_link = cpu_to_le16(sess->discovery_parent_idx);
3707         fw_ddb_entry->chap_tbl_idx = cpu_to_le16(sess->chap_out_idx);
3708         fw_ddb_entry->tsid = cpu_to_le16(sess->tsid);
3709         fw_ddb_entry->port = cpu_to_le16(conn->port);
3710         fw_ddb_entry->def_timeout =
3711                                 cpu_to_le16(sess->default_taskmgmt_timeout);
3712
3713         if (!strncmp(sess->portal_type, PORTAL_TYPE_IPV6, 4))
3714                 fw_ddb_entry->ipv4_tos = conn->ipv6_traffic_class;
3715         else
3716                 fw_ddb_entry->ipv4_tos = conn->ipv4_tos;
3717
3718         if (conn->ipaddress)
3719                 memcpy(fw_ddb_entry->ip_addr, conn->ipaddress,
3720                        sizeof(fw_ddb_entry->ip_addr));
3721
3722         if (conn->redirect_ipaddr)
3723                 memcpy(fw_ddb_entry->tgt_addr, conn->redirect_ipaddr,
3724                        sizeof(fw_ddb_entry->tgt_addr));
3725
3726         if (conn->link_local_ipv6_addr)
3727                 memcpy(fw_ddb_entry->link_local_ipv6_addr,
3728                        conn->link_local_ipv6_addr,
3729                        sizeof(fw_ddb_entry->link_local_ipv6_addr));
3730
3731         if (sess->targetname)
3732                 memcpy(fw_ddb_entry->iscsi_name, sess->targetname,
3733                        sizeof(fw_ddb_entry->iscsi_name));
3734
3735         if (sess->targetalias)
3736                 memcpy(fw_ddb_entry->iscsi_alias, sess->targetalias,
3737                        sizeof(fw_ddb_entry->iscsi_alias));
3738
3739         COPY_ISID(fw_ddb_entry->isid, sess->isid);
3740
3741         return rc;
3742 }
3743
3744 static void qla4xxx_copy_to_sess_conn_params(struct iscsi_conn *conn,
3745                                              struct iscsi_session *sess,
3746                                              struct dev_db_entry *fw_ddb_entry)
3747 {
3748         unsigned long options = 0;
3749         uint16_t ddb_link;
3750         uint16_t disc_parent;
3751         char ip_addr[DDB_IPADDR_LEN];
3752
3753         options = le16_to_cpu(fw_ddb_entry->options);
3754         conn->is_fw_assigned_ipv6 = test_bit(OPT_IS_FW_ASSIGNED_IPV6, &options);
3755         sess->auto_snd_tgt_disable = test_bit(OPT_AUTO_SENDTGTS_DISABLE,
3756                                               &options);
3757         sess->discovery_sess = test_bit(OPT_DISC_SESSION, &options);
3758
3759         options = le16_to_cpu(fw_ddb_entry->iscsi_options);
3760         conn->hdrdgst_en = test_bit(ISCSIOPT_HEADER_DIGEST_EN, &options);
3761         conn->datadgst_en = test_bit(ISCSIOPT_DATA_DIGEST_EN, &options);
3762         sess->imm_data_en = test_bit(ISCSIOPT_IMMEDIATE_DATA_EN, &options);
3763         sess->initial_r2t_en = test_bit(ISCSIOPT_INITIAL_R2T_EN, &options);
3764         sess->dataseq_inorder_en = test_bit(ISCSIOPT_DATA_SEQ_IN_ORDER,
3765                                             &options);
3766         sess->pdu_inorder_en = test_bit(ISCSIOPT_DATA_PDU_IN_ORDER, &options);
3767         sess->chap_auth_en = test_bit(ISCSIOPT_CHAP_AUTH_EN, &options);
3768         sess->discovery_logout_en = test_bit(ISCSIOPT_DISCOVERY_LOGOUT_EN,
3769                                              &options);
3770         sess->bidi_chap_en = test_bit(ISCSIOPT_BIDI_CHAP_EN, &options);
3771         sess->discovery_auth_optional =
3772                         test_bit(ISCSIOPT_DISCOVERY_AUTH_OPTIONAL, &options);
3773         if (test_bit(ISCSIOPT_ERL1, &options))
3774                 sess->erl |= BIT_1;
3775         if (test_bit(ISCSIOPT_ERL0, &options))
3776                 sess->erl |= BIT_0;
3777
3778         options = le16_to_cpu(fw_ddb_entry->tcp_options);
3779         conn->tcp_timestamp_stat = test_bit(TCPOPT_TIMESTAMP_STAT, &options);
3780         conn->tcp_nagle_disable = test_bit(TCPOPT_NAGLE_DISABLE, &options);
3781         conn->tcp_wsf_disable = test_bit(TCPOPT_WSF_DISABLE, &options);
3782         if (test_bit(TCPOPT_TIMER_SCALE3, &options))
3783                 conn->tcp_timer_scale |= BIT_3;
3784         if (test_bit(TCPOPT_TIMER_SCALE2, &options))
3785                 conn->tcp_timer_scale |= BIT_2;
3786         if (test_bit(TCPOPT_TIMER_SCALE1, &options))
3787                 conn->tcp_timer_scale |= BIT_1;
3788
3789         conn->tcp_timer_scale >>= 1;
3790         conn->tcp_timestamp_en = test_bit(TCPOPT_TIMESTAMP_EN, &options);
3791
3792         options = le16_to_cpu(fw_ddb_entry->ip_options);
3793         conn->fragment_disable = test_bit(IPOPT_FRAGMENT_DISABLE, &options);
3794
3795         conn->max_recv_dlength = BYTE_UNITS *
3796                           le16_to_cpu(fw_ddb_entry->iscsi_max_rcv_data_seg_len);
3797         conn->max_xmit_dlength = BYTE_UNITS *
3798                           le16_to_cpu(fw_ddb_entry->iscsi_max_snd_data_seg_len);
3799         sess->max_r2t = le16_to_cpu(fw_ddb_entry->iscsi_max_outsnd_r2t);
3800         sess->first_burst = BYTE_UNITS *
3801                                le16_to_cpu(fw_ddb_entry->iscsi_first_burst_len);
3802         sess->max_burst = BYTE_UNITS *
3803                                  le16_to_cpu(fw_ddb_entry->iscsi_max_burst_len);
3804         sess->time2wait = le16_to_cpu(fw_ddb_entry->iscsi_def_time2wait);
3805         sess->time2retain = le16_to_cpu(fw_ddb_entry->iscsi_def_time2retain);
3806         sess->tpgt = le32_to_cpu(fw_ddb_entry->tgt_portal_grp);
3807         conn->max_segment_size = le16_to_cpu(fw_ddb_entry->mss);
3808         conn->tcp_xmit_wsf = fw_ddb_entry->tcp_xmt_wsf;
3809         conn->tcp_recv_wsf = fw_ddb_entry->tcp_rcv_wsf;
3810         conn->ipv4_tos = fw_ddb_entry->ipv4_tos;
3811         conn->keepalive_tmo = le16_to_cpu(fw_ddb_entry->ka_timeout);
3812         conn->local_port = le16_to_cpu(fw_ddb_entry->lcl_port);
3813         conn->statsn = le32_to_cpu(fw_ddb_entry->stat_sn);
3814         conn->exp_statsn = le32_to_cpu(fw_ddb_entry->exp_stat_sn);
3815         sess->tsid = le16_to_cpu(fw_ddb_entry->tsid);
3816         COPY_ISID(sess->isid, fw_ddb_entry->isid);
3817
3818         ddb_link = le16_to_cpu(fw_ddb_entry->ddb_link);
3819         if (ddb_link == DDB_ISNS)
3820                 disc_parent = ISCSI_DISC_PARENT_ISNS;
3821         else if (ddb_link == DDB_NO_LINK)
3822                 disc_parent = ISCSI_DISC_PARENT_UNKNOWN;
3823         else if (ddb_link < MAX_DDB_ENTRIES)
3824                 disc_parent = ISCSI_DISC_PARENT_SENDTGT;
3825         else
3826                 disc_parent = ISCSI_DISC_PARENT_UNKNOWN;
3827
3828         iscsi_set_param(conn->cls_conn, ISCSI_PARAM_DISCOVERY_PARENT_TYPE,
3829                         iscsi_get_discovery_parent_name(disc_parent), 0);
3830
3831         iscsi_set_param(conn->cls_conn, ISCSI_PARAM_TARGET_ALIAS,
3832                         (char *)fw_ddb_entry->iscsi_alias, 0);
3833
3834         options = le16_to_cpu(fw_ddb_entry->options);
3835         if (options & DDB_OPT_IPV6_DEVICE) {
3836                 memset(ip_addr, 0, sizeof(ip_addr));
3837                 sprintf(ip_addr, "%pI6", fw_ddb_entry->link_local_ipv6_addr);
3838                 iscsi_set_param(conn->cls_conn, ISCSI_PARAM_LOCAL_IPADDR,
3839                                 (char *)ip_addr, 0);
3840         }
3841 }
3842
3843 static void qla4xxx_copy_fwddb_param(struct scsi_qla_host *ha,
3844                                      struct dev_db_entry *fw_ddb_entry,
3845                                      struct iscsi_cls_session *cls_sess,
3846                                      struct iscsi_cls_conn *cls_conn)
3847 {
3848         int buflen = 0;
3849         struct iscsi_session *sess;
3850         struct ddb_entry *ddb_entry;
3851         struct ql4_chap_table chap_tbl;
3852         struct iscsi_conn *conn;
3853         char ip_addr[DDB_IPADDR_LEN];
3854         uint16_t options = 0;
3855
3856         sess = cls_sess->dd_data;
3857         ddb_entry = sess->dd_data;
3858         conn = cls_conn->dd_data;
3859         memset(&chap_tbl, 0, sizeof(chap_tbl));
3860
3861         ddb_entry->chap_tbl_idx = le16_to_cpu(fw_ddb_entry->chap_tbl_idx);
3862
3863         qla4xxx_copy_to_sess_conn_params(conn, sess, fw_ddb_entry);
3864
3865         sess->def_taskmgmt_tmo = le16_to_cpu(fw_ddb_entry->def_timeout);
3866         conn->persistent_port = le16_to_cpu(fw_ddb_entry->port);
3867
3868         memset(ip_addr, 0, sizeof(ip_addr));
3869         options = le16_to_cpu(fw_ddb_entry->options);
3870         if (options & DDB_OPT_IPV6_DEVICE) {
3871                 iscsi_set_param(cls_conn, ISCSI_PARAM_PORTAL_TYPE, "ipv6", 4);
3872
3873                 memset(ip_addr, 0, sizeof(ip_addr));
3874                 sprintf(ip_addr, "%pI6", fw_ddb_entry->ip_addr);
3875         } else {
3876                 iscsi_set_param(cls_conn, ISCSI_PARAM_PORTAL_TYPE, "ipv4", 4);
3877                 sprintf(ip_addr, "%pI4", fw_ddb_entry->ip_addr);
3878         }
3879
3880         iscsi_set_param(cls_conn, ISCSI_PARAM_PERSISTENT_ADDRESS,
3881                         (char *)ip_addr, buflen);
3882         iscsi_set_param(cls_conn, ISCSI_PARAM_TARGET_NAME,
3883                         (char *)fw_ddb_entry->iscsi_name, buflen);
3884         iscsi_set_param(cls_conn, ISCSI_PARAM_INITIATOR_NAME,
3885                         (char *)ha->name_string, buflen);
3886
3887         if (ddb_entry->chap_tbl_idx != INVALID_ENTRY) {
3888                 if (!qla4xxx_get_uni_chap_at_index(ha, chap_tbl.name,
3889                                                    chap_tbl.secret,
3890                                                    ddb_entry->chap_tbl_idx)) {
3891                         iscsi_set_param(cls_conn, ISCSI_PARAM_USERNAME,
3892                                         (char *)chap_tbl.name,
3893                                         strlen((char *)chap_tbl.name));
3894                         iscsi_set_param(cls_conn, ISCSI_PARAM_PASSWORD,
3895                                         (char *)chap_tbl.secret,
3896                                         chap_tbl.secret_len);
3897                 }
3898         }
3899 }
3900
3901 void qla4xxx_update_session_conn_fwddb_param(struct scsi_qla_host *ha,
3902                                              struct ddb_entry *ddb_entry)
3903 {
3904         struct iscsi_cls_session *cls_sess;
3905         struct iscsi_cls_conn *cls_conn;
3906         uint32_t ddb_state;
3907         dma_addr_t fw_ddb_entry_dma;
3908         struct dev_db_entry *fw_ddb_entry;
3909
3910         fw_ddb_entry = dma_alloc_coherent(&ha->pdev->dev, sizeof(*fw_ddb_entry),
3911                                           &fw_ddb_entry_dma, GFP_KERNEL);
3912         if (!fw_ddb_entry) {
3913                 ql4_printk(KERN_ERR, ha,
3914                            "%s: Unable to allocate dma buffer\n", __func__);
3915                 goto exit_session_conn_fwddb_param;
3916         }
3917
3918         if (qla4xxx_get_fwddb_entry(ha, ddb_entry->fw_ddb_index, fw_ddb_entry,
3919                                     fw_ddb_entry_dma, NULL, NULL, &ddb_state,
3920                                     NULL, NULL, NULL) == QLA_ERROR) {
3921                 DEBUG2(ql4_printk(KERN_ERR, ha, "scsi%ld: %s: failed "
3922                                   "get_ddb_entry for fw_ddb_index %d\n",
3923                                   ha->host_no, __func__,
3924                                   ddb_entry->fw_ddb_index));
3925                 goto exit_session_conn_fwddb_param;
3926         }
3927
3928         cls_sess = ddb_entry->sess;
3929
3930         cls_conn = ddb_entry->conn;
3931
3932         /* Update params */
3933         qla4xxx_copy_fwddb_param(ha, fw_ddb_entry, cls_sess, cls_conn);
3934
3935 exit_session_conn_fwddb_param:
3936         if (fw_ddb_entry)
3937                 dma_free_coherent(&ha->pdev->dev, sizeof(*fw_ddb_entry),
3938                                   fw_ddb_entry, fw_ddb_entry_dma);
3939 }
3940
3941 void qla4xxx_update_session_conn_param(struct scsi_qla_host *ha,
3942                                        struct ddb_entry *ddb_entry)
3943 {
3944         struct iscsi_cls_session *cls_sess;
3945         struct iscsi_cls_conn *cls_conn;
3946         struct iscsi_session *sess;
3947         struct iscsi_conn *conn;
3948         uint32_t ddb_state;
3949         dma_addr_t fw_ddb_entry_dma;
3950         struct dev_db_entry *fw_ddb_entry;
3951
3952         fw_ddb_entry = dma_alloc_coherent(&ha->pdev->dev, sizeof(*fw_ddb_entry),
3953                                           &fw_ddb_entry_dma, GFP_KERNEL);
3954         if (!fw_ddb_entry) {
3955                 ql4_printk(KERN_ERR, ha,
3956                            "%s: Unable to allocate dma buffer\n", __func__);
3957                 goto exit_session_conn_param;
3958         }
3959
3960         if (qla4xxx_get_fwddb_entry(ha, ddb_entry->fw_ddb_index, fw_ddb_entry,
3961                                     fw_ddb_entry_dma, NULL, NULL, &ddb_state,
3962                                     NULL, NULL, NULL) == QLA_ERROR) {
3963                 DEBUG2(ql4_printk(KERN_ERR, ha, "scsi%ld: %s: failed "
3964                                   "get_ddb_entry for fw_ddb_index %d\n",
3965                                   ha->host_no, __func__,
3966                                   ddb_entry->fw_ddb_index));
3967                 goto exit_session_conn_param;
3968         }
3969
3970         cls_sess = ddb_entry->sess;
3971         sess = cls_sess->dd_data;
3972
3973         cls_conn = ddb_entry->conn;
3974         conn = cls_conn->dd_data;
3975
3976         /* Update timers after login */
3977         ddb_entry->default_relogin_timeout =
3978                 (le16_to_cpu(fw_ddb_entry->def_timeout) > LOGIN_TOV) &&
3979                  (le16_to_cpu(fw_ddb_entry->def_timeout) < LOGIN_TOV * 10) ?
3980                  le16_to_cpu(fw_ddb_entry->def_timeout) : LOGIN_TOV;
3981         ddb_entry->default_time2wait =
3982                                 le16_to_cpu(fw_ddb_entry->iscsi_def_time2wait);
3983
3984         /* Update params */
3985         ddb_entry->chap_tbl_idx = le16_to_cpu(fw_ddb_entry->chap_tbl_idx);
3986         qla4xxx_copy_to_sess_conn_params(conn, sess, fw_ddb_entry);
3987
3988         memcpy(sess->initiatorname, ha->name_string,
3989                min(sizeof(ha->name_string), sizeof(sess->initiatorname)));
3990
3991 exit_session_conn_param:
3992         if (fw_ddb_entry)
3993                 dma_free_coherent(&ha->pdev->dev, sizeof(*fw_ddb_entry),
3994                                   fw_ddb_entry, fw_ddb_entry_dma);
3995 }
3996
3997 /*
3998  * Timer routines
3999  */
4000 static void qla4xxx_timer(struct timer_list *t);
4001
4002 static void qla4xxx_start_timer(struct scsi_qla_host *ha,
4003                                 unsigned long interval)
4004 {
4005         DEBUG(printk("scsi: %s: Starting timer thread for adapter %d\n",
4006                      __func__, ha->host->host_no));
4007         timer_setup(&ha->timer, qla4xxx_timer, 0);
4008         ha->timer.expires = jiffies + interval * HZ;
4009         add_timer(&ha->timer);
4010         ha->timer_active = 1;
4011 }
4012
4013 static void qla4xxx_stop_timer(struct scsi_qla_host *ha)
4014 {
4015         del_timer_sync(&ha->timer);
4016         ha->timer_active = 0;
4017 }
4018
4019 /***
4020  * qla4xxx_mark_device_missing - blocks the session
4021  * @cls_session: Pointer to the session to be blocked
4022  * @ddb_entry: Pointer to device database entry
4023  *
4024  * This routine marks a device missing and close connection.
4025  **/
4026 void qla4xxx_mark_device_missing(struct iscsi_cls_session *cls_session)
4027 {
4028         iscsi_block_session(cls_session);
4029 }
4030
4031 /**
4032  * qla4xxx_mark_all_devices_missing - mark all devices as missing.
4033  * @ha: Pointer to host adapter structure.
4034  *
4035  * This routine marks a device missing and resets the relogin retry count.
4036  **/
4037 void qla4xxx_mark_all_devices_missing(struct scsi_qla_host *ha)
4038 {
4039         iscsi_host_for_each_session(ha->host, qla4xxx_mark_device_missing);
4040 }
4041
4042 static struct srb* qla4xxx_get_new_srb(struct scsi_qla_host *ha,
4043                                        struct ddb_entry *ddb_entry,
4044                                        struct scsi_cmnd *cmd)
4045 {
4046         struct srb *srb;
4047
4048         srb = mempool_alloc(ha->srb_mempool, GFP_ATOMIC);
4049         if (!srb)
4050                 return srb;
4051
4052         kref_init(&srb->srb_ref);
4053         srb->ha = ha;
4054         srb->ddb = ddb_entry;
4055         srb->cmd = cmd;
4056         srb->flags = 0;
4057         CMD_SP(cmd) = (void *)srb;
4058
4059         return srb;
4060 }
4061
4062 static void qla4xxx_srb_free_dma(struct scsi_qla_host *ha, struct srb *srb)
4063 {
4064         struct scsi_cmnd *cmd = srb->cmd;
4065
4066         if (srb->flags & SRB_DMA_VALID) {
4067                 scsi_dma_unmap(cmd);
4068                 srb->flags &= ~SRB_DMA_VALID;
4069         }
4070         CMD_SP(cmd) = NULL;
4071 }
4072
4073 void qla4xxx_srb_compl(struct kref *ref)
4074 {
4075         struct srb *srb = container_of(ref, struct srb, srb_ref);
4076         struct scsi_cmnd *cmd = srb->cmd;
4077         struct scsi_qla_host *ha = srb->ha;
4078
4079         qla4xxx_srb_free_dma(ha, srb);
4080
4081         mempool_free(srb, ha->srb_mempool);
4082
4083         cmd->scsi_done(cmd);
4084 }
4085
4086 /**
4087  * qla4xxx_queuecommand - scsi layer issues scsi command to driver.
4088  * @host: scsi host
4089  * @cmd: Pointer to Linux's SCSI command structure
4090  *
4091  * Remarks:
4092  * This routine is invoked by Linux to send a SCSI command to the driver.
4093  * The mid-level driver tries to ensure that queuecommand never gets
4094  * invoked concurrently with itself or the interrupt handler (although
4095  * the interrupt handler may call this routine as part of request-
4096  * completion handling).   Unfortunely, it sometimes calls the scheduler
4097  * in interrupt context which is a big NO! NO!.
4098  **/
4099 static int qla4xxx_queuecommand(struct Scsi_Host *host, struct scsi_cmnd *cmd)
4100 {
4101         struct scsi_qla_host *ha = to_qla_host(host);
4102         struct ddb_entry *ddb_entry = cmd->device->hostdata;
4103         struct iscsi_cls_session *sess = ddb_entry->sess;
4104         struct srb *srb;
4105         int rval;
4106
4107         if (test_bit(AF_EEH_BUSY, &ha->flags)) {
4108                 if (test_bit(AF_PCI_CHANNEL_IO_PERM_FAILURE, &ha->flags))
4109                         cmd->result = DID_NO_CONNECT << 16;
4110                 else
4111                         cmd->result = DID_REQUEUE << 16;
4112                 goto qc_fail_command;
4113         }
4114
4115         if (!sess) {
4116                 cmd->result = DID_IMM_RETRY << 16;
4117                 goto qc_fail_command;
4118         }
4119
4120         rval = iscsi_session_chkready(sess);
4121         if (rval) {
4122                 cmd->result = rval;
4123                 goto qc_fail_command;
4124         }
4125
4126         if (test_bit(DPC_RESET_HA_INTR, &ha->dpc_flags) ||
4127             test_bit(DPC_RESET_ACTIVE, &ha->dpc_flags) ||
4128             test_bit(DPC_RESET_HA, &ha->dpc_flags) ||
4129             test_bit(DPC_HA_UNRECOVERABLE, &ha->dpc_flags) ||
4130             test_bit(DPC_HA_NEED_QUIESCENT, &ha->dpc_flags) ||
4131             !test_bit(AF_ONLINE, &ha->flags) ||
4132             !test_bit(AF_LINK_UP, &ha->flags) ||
4133             test_bit(AF_LOOPBACK, &ha->flags) ||
4134             test_bit(DPC_POST_IDC_ACK, &ha->dpc_flags) ||
4135             test_bit(DPC_RESTORE_ACB, &ha->dpc_flags) ||
4136             test_bit(DPC_RESET_HA_FW_CONTEXT, &ha->dpc_flags))
4137                 goto qc_host_busy;
4138
4139         srb = qla4xxx_get_new_srb(ha, ddb_entry, cmd);
4140         if (!srb)
4141                 goto qc_host_busy;
4142
4143         rval = qla4xxx_send_command_to_isp(ha, srb);
4144         if (rval != QLA_SUCCESS)
4145                 goto qc_host_busy_free_sp;
4146
4147         return 0;
4148
4149 qc_host_busy_free_sp:
4150         qla4xxx_srb_free_dma(ha, srb);
4151         mempool_free(srb, ha->srb_mempool);
4152
4153 qc_host_busy:
4154         return SCSI_MLQUEUE_HOST_BUSY;
4155
4156 qc_fail_command:
4157         cmd->scsi_done(cmd);
4158
4159         return 0;
4160 }
4161
4162 /**
4163  * qla4xxx_mem_free - frees memory allocated to adapter
4164  * @ha: Pointer to host adapter structure.
4165  *
4166  * Frees memory previously allocated by qla4xxx_mem_alloc
4167  **/
4168 static void qla4xxx_mem_free(struct scsi_qla_host *ha)
4169 {
4170         if (ha->queues)
4171                 dma_free_coherent(&ha->pdev->dev, ha->queues_len, ha->queues,
4172                                   ha->queues_dma);
4173
4174         vfree(ha->fw_dump);
4175
4176         ha->queues_len = 0;
4177         ha->queues = NULL;
4178         ha->queues_dma = 0;
4179         ha->request_ring = NULL;
4180         ha->request_dma = 0;
4181         ha->response_ring = NULL;
4182         ha->response_dma = 0;
4183         ha->shadow_regs = NULL;
4184         ha->shadow_regs_dma = 0;
4185         ha->fw_dump = NULL;
4186         ha->fw_dump_size = 0;
4187
4188         /* Free srb pool. */
4189         mempool_destroy(ha->srb_mempool);
4190         ha->srb_mempool = NULL;
4191
4192         dma_pool_destroy(ha->chap_dma_pool);
4193
4194         vfree(ha->chap_list);
4195         ha->chap_list = NULL;
4196
4197         dma_pool_destroy(ha->fw_ddb_dma_pool);
4198
4199         /* release io space registers  */
4200         if (is_qla8022(ha)) {
4201                 if (ha->nx_pcibase)
4202                         iounmap(
4203                             (struct device_reg_82xx __iomem *)ha->nx_pcibase);
4204         } else if (is_qla8032(ha) || is_qla8042(ha)) {
4205                 if (ha->nx_pcibase)
4206                         iounmap(
4207                             (struct device_reg_83xx __iomem *)ha->nx_pcibase);
4208         } else if (ha->reg) {
4209                 iounmap(ha->reg);
4210         }
4211
4212         vfree(ha->reset_tmplt.buff);
4213
4214         pci_release_regions(ha->pdev);
4215 }
4216
4217 /**
4218  * qla4xxx_mem_alloc - allocates memory for use by adapter.
4219  * @ha: Pointer to host adapter structure
4220  *
4221  * Allocates DMA memory for request and response queues. Also allocates memory
4222  * for srbs.
4223  **/
4224 static int qla4xxx_mem_alloc(struct scsi_qla_host *ha)
4225 {
4226         unsigned long align;
4227
4228         /* Allocate contiguous block of DMA memory for queues. */
4229         ha->queues_len = ((REQUEST_QUEUE_DEPTH * QUEUE_SIZE) +
4230                           (RESPONSE_QUEUE_DEPTH * QUEUE_SIZE) +
4231                           sizeof(struct shadow_regs) +
4232                           MEM_ALIGN_VALUE +
4233                           (PAGE_SIZE - 1)) & ~(PAGE_SIZE - 1);
4234         ha->queues = dma_alloc_coherent(&ha->pdev->dev, ha->queues_len,
4235                                         &ha->queues_dma, GFP_KERNEL);
4236         if (ha->queues == NULL) {
4237                 ql4_printk(KERN_WARNING, ha,
4238                     "Memory Allocation failed - queues.\n");
4239
4240                 goto mem_alloc_error_exit;
4241         }
4242
4243         /*
4244          * As per RISC alignment requirements -- the bus-address must be a
4245          * multiple of the request-ring size (in bytes).
4246          */
4247         align = 0;
4248         if ((unsigned long)ha->queues_dma & (MEM_ALIGN_VALUE - 1))
4249                 align = MEM_ALIGN_VALUE - ((unsigned long)ha->queues_dma &
4250                                            (MEM_ALIGN_VALUE - 1));
4251
4252         /* Update request and response queue pointers. */
4253         ha->request_dma = ha->queues_dma + align;
4254         ha->request_ring = (struct queue_entry *) (ha->queues + align);
4255         ha->response_dma = ha->queues_dma + align +
4256                 (REQUEST_QUEUE_DEPTH * QUEUE_SIZE);
4257         ha->response_ring = (struct queue_entry *) (ha->queues + align +
4258                                                     (REQUEST_QUEUE_DEPTH *
4259                                                      QUEUE_SIZE));
4260         ha->shadow_regs_dma = ha->queues_dma + align +
4261                 (REQUEST_QUEUE_DEPTH * QUEUE_SIZE) +
4262                 (RESPONSE_QUEUE_DEPTH * QUEUE_SIZE);
4263         ha->shadow_regs = (struct shadow_regs *) (ha->queues + align +
4264                                                   (REQUEST_QUEUE_DEPTH *
4265                                                    QUEUE_SIZE) +
4266                                                   (RESPONSE_QUEUE_DEPTH *
4267                                                    QUEUE_SIZE));
4268
4269         /* Allocate memory for srb pool. */
4270         ha->srb_mempool = mempool_create(SRB_MIN_REQ, mempool_alloc_slab,
4271                                          mempool_free_slab, srb_cachep);
4272         if (ha->srb_mempool == NULL) {
4273                 ql4_printk(KERN_WARNING, ha,
4274                     "Memory Allocation failed - SRB Pool.\n");
4275
4276                 goto mem_alloc_error_exit;
4277         }
4278
4279         ha->chap_dma_pool = dma_pool_create("ql4_chap", &ha->pdev->dev,
4280                                             CHAP_DMA_BLOCK_SIZE, 8, 0);
4281
4282         if (ha->chap_dma_pool == NULL) {
4283                 ql4_printk(KERN_WARNING, ha,
4284                     "%s: chap_dma_pool allocation failed..\n", __func__);
4285                 goto mem_alloc_error_exit;
4286         }
4287
4288         ha->fw_ddb_dma_pool = dma_pool_create("ql4_fw_ddb", &ha->pdev->dev,
4289                                               DDB_DMA_BLOCK_SIZE, 8, 0);
4290
4291         if (ha->fw_ddb_dma_pool == NULL) {
4292                 ql4_printk(KERN_WARNING, ha,
4293                            "%s: fw_ddb_dma_pool allocation failed..\n",
4294                            __func__);
4295                 goto mem_alloc_error_exit;
4296         }
4297
4298         return QLA_SUCCESS;
4299
4300 mem_alloc_error_exit:
4301         return QLA_ERROR;
4302 }
4303
4304 /**
4305  * qla4_8xxx_check_temp - Check the ISP82XX temperature.
4306  * @ha: adapter block pointer.
4307  *
4308  * Note: The caller should not hold the idc lock.
4309  **/
4310 static int qla4_8xxx_check_temp(struct scsi_qla_host *ha)
4311 {
4312         uint32_t temp, temp_state, temp_val;
4313         int status = QLA_SUCCESS;
4314
4315         temp = qla4_8xxx_rd_direct(ha, QLA8XXX_CRB_TEMP_STATE);
4316
4317         temp_state = qla82xx_get_temp_state(temp);
4318         temp_val = qla82xx_get_temp_val(temp);
4319
4320         if (temp_state == QLA82XX_TEMP_PANIC) {
4321                 ql4_printk(KERN_WARNING, ha, "Device temperature %d degrees C"
4322                            " exceeds maximum allowed. Hardware has been shut"
4323                            " down.\n", temp_val);
4324                 status = QLA_ERROR;
4325         } else if (temp_state == QLA82XX_TEMP_WARN) {
4326                 if (ha->temperature == QLA82XX_TEMP_NORMAL)
4327                         ql4_printk(KERN_WARNING, ha, "Device temperature %d"
4328                                    " degrees C exceeds operating range."
4329                                    " Immediate action needed.\n", temp_val);
4330         } else {
4331                 if (ha->temperature == QLA82XX_TEMP_WARN)
4332                         ql4_printk(KERN_INFO, ha, "Device temperature is"
4333                                    " now %d degrees C in normal range.\n",
4334                                    temp_val);
4335         }
4336         ha->temperature = temp_state;
4337         return status;
4338 }
4339
4340 /**
4341  * qla4_8xxx_check_fw_alive  - Check firmware health
4342  * @ha: Pointer to host adapter structure.
4343  *
4344  * Context: Interrupt
4345  **/
4346 static int qla4_8xxx_check_fw_alive(struct scsi_qla_host *ha)
4347 {
4348         uint32_t fw_heartbeat_counter;
4349         int status = QLA_SUCCESS;
4350
4351         fw_heartbeat_counter = qla4_8xxx_rd_direct(ha,
4352                                                    QLA8XXX_PEG_ALIVE_COUNTER);
4353         /* If PEG_ALIVE_COUNTER is 0xffffffff, AER/EEH is in progress, ignore */
4354         if (fw_heartbeat_counter == 0xffffffff) {
4355                 DEBUG2(printk(KERN_WARNING "scsi%ld: %s: Device in frozen "
4356                     "state, QLA82XX_PEG_ALIVE_COUNTER is 0xffffffff\n",
4357                     ha->host_no, __func__));
4358                 return status;
4359         }
4360
4361         if (ha->fw_heartbeat_counter == fw_heartbeat_counter) {
4362                 ha->seconds_since_last_heartbeat++;
4363                 /* FW not alive after 2 seconds */
4364                 if (ha->seconds_since_last_heartbeat == 2) {
4365                         ha->seconds_since_last_heartbeat = 0;
4366                         qla4_8xxx_dump_peg_reg(ha);
4367                         status = QLA_ERROR;
4368                 }
4369         } else
4370                 ha->seconds_since_last_heartbeat = 0;
4371
4372         ha->fw_heartbeat_counter = fw_heartbeat_counter;
4373         return status;
4374 }
4375
4376 static void qla4_8xxx_process_fw_error(struct scsi_qla_host *ha)
4377 {
4378         uint32_t halt_status;
4379         int halt_status_unrecoverable = 0;
4380
4381         halt_status = qla4_8xxx_rd_direct(ha, QLA8XXX_PEG_HALT_STATUS1);
4382
4383         if (is_qla8022(ha)) {
4384                 ql4_printk(KERN_INFO, ha, "%s: disabling pause transmit on port 0 & 1.\n",
4385                            __func__);
4386                 qla4_82xx_wr_32(ha, QLA82XX_CRB_NIU + 0x98,
4387                                 CRB_NIU_XG_PAUSE_CTL_P0 |
4388                                 CRB_NIU_XG_PAUSE_CTL_P1);
4389
4390                 if (QLA82XX_FWERROR_CODE(halt_status) == 0x67)
4391                         ql4_printk(KERN_ERR, ha, "%s: Firmware aborted with error code 0x00006700. Device is being reset\n",
4392                                    __func__);
4393                 if (halt_status & HALT_STATUS_UNRECOVERABLE)
4394                         halt_status_unrecoverable = 1;
4395         } else if (is_qla8032(ha) || is_qla8042(ha)) {
4396                 if (halt_status & QLA83XX_HALT_STATUS_FW_RESET)
4397                         ql4_printk(KERN_ERR, ha, "%s: Firmware error detected device is being reset\n",
4398                                    __func__);
4399                 else if (halt_status & QLA83XX_HALT_STATUS_UNRECOVERABLE)
4400                         halt_status_unrecoverable = 1;
4401         }
4402
4403         /*
4404          * Since we cannot change dev_state in interrupt context,
4405          * set appropriate DPC flag then wakeup DPC
4406          */
4407         if (halt_status_unrecoverable) {
4408                 set_bit(DPC_HA_UNRECOVERABLE, &ha->dpc_flags);
4409         } else {
4410                 ql4_printk(KERN_INFO, ha, "%s: detect abort needed!\n",
4411                            __func__);
4412                 set_bit(DPC_RESET_HA, &ha->dpc_flags);
4413         }
4414         qla4xxx_mailbox_premature_completion(ha);
4415         qla4xxx_wake_dpc(ha);
4416 }
4417
4418 /**
4419  * qla4_8xxx_watchdog - Poll dev state
4420  * @ha: Pointer to host adapter structure.
4421  *
4422  * Context: Interrupt
4423  **/
4424 void qla4_8xxx_watchdog(struct scsi_qla_host *ha)
4425 {
4426         uint32_t dev_state;
4427         uint32_t idc_ctrl;
4428
4429         if (is_qla8032(ha) &&
4430             (qla4_83xx_is_detached(ha) == QLA_SUCCESS))
4431                 WARN_ONCE(1, "%s: iSCSI function %d marked invisible\n",
4432                           __func__, ha->func_num);
4433
4434         /* don't poll if reset is going on */
4435         if (!(test_bit(DPC_RESET_ACTIVE, &ha->dpc_flags) ||
4436             test_bit(DPC_RESET_HA, &ha->dpc_flags) ||
4437             test_bit(DPC_RETRY_RESET_HA, &ha->dpc_flags))) {
4438                 dev_state = qla4_8xxx_rd_direct(ha, QLA8XXX_CRB_DEV_STATE);
4439
4440                 if (qla4_8xxx_check_temp(ha)) {
4441                         if (is_qla8022(ha)) {
4442                                 ql4_printk(KERN_INFO, ha, "disabling pause transmit on port 0 & 1.\n");
4443                                 qla4_82xx_wr_32(ha, QLA82XX_CRB_NIU + 0x98,
4444                                                 CRB_NIU_XG_PAUSE_CTL_P0 |
4445                                                 CRB_NIU_XG_PAUSE_CTL_P1);
4446                         }
4447                         set_bit(DPC_HA_UNRECOVERABLE, &ha->dpc_flags);
4448                         qla4xxx_wake_dpc(ha);
4449                 } else if (dev_state == QLA8XXX_DEV_NEED_RESET &&
4450                            !test_bit(DPC_RESET_HA, &ha->dpc_flags)) {
4451
4452                         ql4_printk(KERN_INFO, ha, "%s: HW State: NEED RESET!\n",
4453                                    __func__);
4454
4455                         if (is_qla8032(ha) || is_qla8042(ha)) {
4456                                 idc_ctrl = qla4_83xx_rd_reg(ha,
4457                                                         QLA83XX_IDC_DRV_CTRL);
4458                                 if (!(idc_ctrl & GRACEFUL_RESET_BIT1)) {
4459                                         ql4_printk(KERN_INFO, ha, "%s: Graceful reset bit is not set\n",
4460                                                    __func__);
4461                                         qla4xxx_mailbox_premature_completion(
4462                                                                             ha);
4463                                 }
4464                         }
4465
4466                         if ((is_qla8032(ha) || is_qla8042(ha)) ||
4467                             (is_qla8022(ha) && !ql4xdontresethba)) {
4468                                 set_bit(DPC_RESET_HA, &ha->dpc_flags);
4469                                 qla4xxx_wake_dpc(ha);
4470                         }
4471                 } else if (dev_state == QLA8XXX_DEV_NEED_QUIESCENT &&
4472                     !test_bit(DPC_HA_NEED_QUIESCENT, &ha->dpc_flags)) {
4473                         ql4_printk(KERN_INFO, ha, "%s: HW State: NEED QUIES!\n",
4474                             __func__);
4475                         set_bit(DPC_HA_NEED_QUIESCENT, &ha->dpc_flags);
4476                         qla4xxx_wake_dpc(ha);
4477                 } else  {
4478                         /* Check firmware health */
4479                         if (qla4_8xxx_check_fw_alive(ha))
4480                                 qla4_8xxx_process_fw_error(ha);
4481                 }
4482         }
4483 }
4484
4485 static void qla4xxx_check_relogin_flash_ddb(struct iscsi_cls_session *cls_sess)
4486 {
4487         struct iscsi_session *sess;
4488         struct ddb_entry *ddb_entry;
4489         struct scsi_qla_host *ha;
4490
4491         sess = cls_sess->dd_data;
4492         ddb_entry = sess->dd_data;
4493         ha = ddb_entry->ha;
4494
4495         if (!(ddb_entry->ddb_type == FLASH_DDB))
4496                 return;
4497
4498         if (adapter_up(ha) && !test_bit(DF_RELOGIN, &ddb_entry->flags) &&
4499             !iscsi_is_session_online(cls_sess)) {
4500                 if (atomic_read(&ddb_entry->retry_relogin_timer) !=
4501                     INVALID_ENTRY) {
4502                         if (atomic_read(&ddb_entry->retry_relogin_timer) ==
4503                                         0) {
4504                                 atomic_set(&ddb_entry->retry_relogin_timer,
4505                                            INVALID_ENTRY);
4506                                 set_bit(DPC_RELOGIN_DEVICE, &ha->dpc_flags);
4507                                 set_bit(DF_RELOGIN, &ddb_entry->flags);
4508                                 DEBUG2(ql4_printk(KERN_INFO, ha,
4509                                        "%s: index [%d] login device\n",
4510                                         __func__, ddb_entry->fw_ddb_index));
4511                         } else
4512                                 atomic_dec(&ddb_entry->retry_relogin_timer);
4513                 }
4514         }
4515
4516         /* Wait for relogin to timeout */
4517         if (atomic_read(&ddb_entry->relogin_timer) &&
4518             (atomic_dec_and_test(&ddb_entry->relogin_timer) != 0)) {
4519                 /*
4520                  * If the relogin times out and the device is
4521                  * still NOT ONLINE then try and relogin again.
4522                  */
4523                 if (!iscsi_is_session_online(cls_sess)) {
4524                         /* Reset retry relogin timer */
4525                         atomic_inc(&ddb_entry->relogin_retry_count);
4526                         DEBUG2(ql4_printk(KERN_INFO, ha,
4527                                 "%s: index[%d] relogin timed out-retrying"
4528                                 " relogin (%d), retry (%d)\n", __func__,
4529                                 ddb_entry->fw_ddb_index,
4530                                 atomic_read(&ddb_entry->relogin_retry_count),
4531                                 ddb_entry->default_time2wait + 4));
4532                         set_bit(DPC_RELOGIN_DEVICE, &ha->dpc_flags);
4533                         atomic_set(&ddb_entry->retry_relogin_timer,
4534                                    ddb_entry->default_time2wait + 4);
4535                 }
4536         }
4537 }
4538
4539 /**
4540  * qla4xxx_timer - checks every second for work to do.
4541  * @t: Context to obtain pointer to host adapter structure.
4542  **/
4543 static void qla4xxx_timer(struct timer_list *t)
4544 {
4545         struct scsi_qla_host *ha = from_timer(ha, t, timer);
4546         int start_dpc = 0;
4547         uint16_t w;
4548
4549         iscsi_host_for_each_session(ha->host, qla4xxx_check_relogin_flash_ddb);
4550
4551         /* If we are in the middle of AER/EEH processing
4552          * skip any processing and reschedule the timer
4553          */
4554         if (test_bit(AF_EEH_BUSY, &ha->flags)) {
4555                 mod_timer(&ha->timer, jiffies + HZ);
4556                 return;
4557         }
4558
4559         /* Hardware read to trigger an EEH error during mailbox waits. */
4560         if (!pci_channel_offline(ha->pdev))
4561                 pci_read_config_word(ha->pdev, PCI_VENDOR_ID, &w);
4562
4563         if (is_qla80XX(ha))
4564                 qla4_8xxx_watchdog(ha);
4565
4566         if (is_qla40XX(ha)) {
4567                 /* Check for heartbeat interval. */
4568                 if (ha->firmware_options & FWOPT_HEARTBEAT_ENABLE &&
4569                     ha->heartbeat_interval != 0) {
4570                         ha->seconds_since_last_heartbeat++;
4571                         if (ha->seconds_since_last_heartbeat >
4572                             ha->heartbeat_interval + 2)
4573                                 set_bit(DPC_RESET_HA, &ha->dpc_flags);
4574                 }
4575         }
4576
4577         /* Process any deferred work. */
4578         if (!list_empty(&ha->work_list))
4579                 start_dpc++;
4580
4581         /* Wakeup the dpc routine for this adapter, if needed. */
4582         if (start_dpc ||
4583              test_bit(DPC_RESET_HA, &ha->dpc_flags) ||
4584              test_bit(DPC_RETRY_RESET_HA, &ha->dpc_flags) ||
4585              test_bit(DPC_RELOGIN_DEVICE, &ha->dpc_flags) ||
4586              test_bit(DPC_RESET_HA_FW_CONTEXT, &ha->dpc_flags) ||
4587              test_bit(DPC_RESET_HA_INTR, &ha->dpc_flags) ||
4588              test_bit(DPC_GET_DHCP_IP_ADDR, &ha->dpc_flags) ||
4589              test_bit(DPC_LINK_CHANGED, &ha->dpc_flags) ||
4590              test_bit(DPC_HA_UNRECOVERABLE, &ha->dpc_flags) ||
4591              test_bit(DPC_HA_NEED_QUIESCENT, &ha->dpc_flags) ||
4592              test_bit(DPC_SYSFS_DDB_EXPORT, &ha->dpc_flags) ||
4593              test_bit(DPC_AEN, &ha->dpc_flags)) {
4594                 DEBUG2(printk("scsi%ld: %s: scheduling dpc routine"
4595                               " - dpc flags = 0x%lx\n",
4596                               ha->host_no, __func__, ha->dpc_flags));
4597                 qla4xxx_wake_dpc(ha);
4598         }
4599
4600         /* Reschedule timer thread to call us back in one second */
4601         mod_timer(&ha->timer, jiffies + HZ);
4602
4603         DEBUG2(ha->seconds_since_last_intr++);
4604 }
4605
4606 /**
4607  * qla4xxx_cmd_wait - waits for all outstanding commands to complete
4608  * @ha: Pointer to host adapter structure.
4609  *
4610  * This routine stalls the driver until all outstanding commands are returned.
4611  * Caller must release the Hardware Lock prior to calling this routine.
4612  **/
4613 static int qla4xxx_cmd_wait(struct scsi_qla_host *ha)
4614 {
4615         uint32_t index = 0;
4616         unsigned long flags;
4617         struct scsi_cmnd *cmd;
4618         unsigned long wtime;
4619         uint32_t wtmo;
4620
4621         if (is_qla40XX(ha))
4622                 wtmo = WAIT_CMD_TOV;
4623         else
4624                 wtmo = ha->nx_reset_timeout / 2;
4625
4626         wtime = jiffies + (wtmo * HZ);
4627
4628         DEBUG2(ql4_printk(KERN_INFO, ha,
4629                           "Wait up to %u seconds for cmds to complete\n",
4630                           wtmo));
4631
4632         while (!time_after_eq(jiffies, wtime)) {
4633                 spin_lock_irqsave(&ha->hardware_lock, flags);
4634                 /* Find a command that hasn't completed. */
4635                 for (index = 0; index < ha->host->can_queue; index++) {
4636                         cmd = scsi_host_find_tag(ha->host, index);
4637                         /*
4638                          * We cannot just check if the index is valid,
4639                          * becase if we are run from the scsi eh, then
4640                          * the scsi/block layer is going to prevent
4641                          * the tag from being released.
4642                          */
4643                         if (cmd != NULL && CMD_SP(cmd))
4644                                 break;
4645                 }
4646                 spin_unlock_irqrestore(&ha->hardware_lock, flags);
4647
4648                 /* If No Commands are pending, wait is complete */
4649                 if (index == ha->host->can_queue)
4650                         return QLA_SUCCESS;
4651
4652                 msleep(1000);
4653         }
4654         /* If we timed out on waiting for commands to come back
4655          * return ERROR. */
4656         return QLA_ERROR;
4657 }
4658
4659 int qla4xxx_hw_reset(struct scsi_qla_host *ha)
4660 {
4661         uint32_t ctrl_status;
4662         unsigned long flags = 0;
4663
4664         DEBUG2(printk(KERN_ERR "scsi%ld: %s\n", ha->host_no, __func__));
4665
4666         if (ql4xxx_lock_drvr_wait(ha) != QLA_SUCCESS)
4667                 return QLA_ERROR;
4668
4669         spin_lock_irqsave(&ha->hardware_lock, flags);
4670
4671         /*
4672          * If the SCSI Reset Interrupt bit is set, clear it.
4673          * Otherwise, the Soft Reset won't work.
4674          */
4675         ctrl_status = readw(&ha->reg->ctrl_status);
4676         if ((ctrl_status & CSR_SCSI_RESET_INTR) != 0)
4677                 writel(set_rmask(CSR_SCSI_RESET_INTR), &ha->reg->ctrl_status);
4678
4679         /* Issue Soft Reset */
4680         writel(set_rmask(CSR_SOFT_RESET), &ha->reg->ctrl_status);
4681         readl(&ha->reg->ctrl_status);
4682
4683         spin_unlock_irqrestore(&ha->hardware_lock, flags);
4684         return QLA_SUCCESS;
4685 }
4686
4687 /**
4688  * qla4xxx_soft_reset - performs soft reset.
4689  * @ha: Pointer to host adapter structure.
4690  **/
4691 int qla4xxx_soft_reset(struct scsi_qla_host *ha)
4692 {
4693         uint32_t max_wait_time;
4694         unsigned long flags = 0;
4695         int status;
4696         uint32_t ctrl_status;
4697
4698         status = qla4xxx_hw_reset(ha);
4699         if (status != QLA_SUCCESS)
4700                 return status;
4701
4702         status = QLA_ERROR;
4703         /* Wait until the Network Reset Intr bit is cleared */
4704         max_wait_time = RESET_INTR_TOV;
4705         do {
4706                 spin_lock_irqsave(&ha->hardware_lock, flags);
4707                 ctrl_status = readw(&ha->reg->ctrl_status);
4708                 spin_unlock_irqrestore(&ha->hardware_lock, flags);
4709
4710                 if ((ctrl_status & CSR_NET_RESET_INTR) == 0)
4711                         break;
4712
4713                 msleep(1000);
4714         } while ((--max_wait_time));
4715
4716         if ((ctrl_status & CSR_NET_RESET_INTR) != 0) {
4717                 DEBUG2(printk(KERN_WARNING
4718                               "scsi%ld: Network Reset Intr not cleared by "
4719                               "Network function, clearing it now!\n",
4720                               ha->host_no));
4721                 spin_lock_irqsave(&ha->hardware_lock, flags);
4722                 writel(set_rmask(CSR_NET_RESET_INTR), &ha->reg->ctrl_status);
4723                 readl(&ha->reg->ctrl_status);
4724                 spin_unlock_irqrestore(&ha->hardware_lock, flags);
4725         }
4726
4727         /* Wait until the firmware tells us the Soft Reset is done */
4728         max_wait_time = SOFT_RESET_TOV;
4729         do {
4730                 spin_lock_irqsave(&ha->hardware_lock, flags);
4731                 ctrl_status = readw(&ha->reg->ctrl_status);
4732                 spin_unlock_irqrestore(&ha->hardware_lock, flags);
4733
4734                 if ((ctrl_status & CSR_SOFT_RESET) == 0) {
4735                         status = QLA_SUCCESS;
4736                         break;
4737                 }
4738
4739                 msleep(1000);
4740         } while ((--max_wait_time));
4741
4742         /*
4743          * Also, make sure that the SCSI Reset Interrupt bit has been cleared
4744          * after the soft reset has taken place.
4745          */
4746         spin_lock_irqsave(&ha->hardware_lock, flags);
4747         ctrl_status = readw(&ha->reg->ctrl_status);
4748         if ((ctrl_status & CSR_SCSI_RESET_INTR) != 0) {
4749                 writel(set_rmask(CSR_SCSI_RESET_INTR), &ha->reg->ctrl_status);
4750                 readl(&ha->reg->ctrl_status);
4751         }
4752         spin_unlock_irqrestore(&ha->hardware_lock, flags);
4753
4754         /* If soft reset fails then most probably the bios on other
4755          * function is also enabled.
4756          * Since the initialization is sequential the other fn
4757          * wont be able to acknowledge the soft reset.
4758          * Issue a force soft reset to workaround this scenario.
4759          */
4760         if (max_wait_time == 0) {
4761                 /* Issue Force Soft Reset */
4762                 spin_lock_irqsave(&ha->hardware_lock, flags);
4763                 writel(set_rmask(CSR_FORCE_SOFT_RESET), &ha->reg->ctrl_status);
4764                 readl(&ha->reg->ctrl_status);
4765                 spin_unlock_irqrestore(&ha->hardware_lock, flags);
4766                 /* Wait until the firmware tells us the Soft Reset is done */
4767                 max_wait_time = SOFT_RESET_TOV;
4768                 do {
4769                         spin_lock_irqsave(&ha->hardware_lock, flags);
4770                         ctrl_status = readw(&ha->reg->ctrl_status);
4771                         spin_unlock_irqrestore(&ha->hardware_lock, flags);
4772
4773                         if ((ctrl_status & CSR_FORCE_SOFT_RESET) == 0) {
4774                                 status = QLA_SUCCESS;
4775                                 break;
4776                         }
4777
4778                         msleep(1000);
4779                 } while ((--max_wait_time));
4780         }
4781
4782         return status;
4783 }
4784
4785 /**
4786  * qla4xxx_abort_active_cmds - returns all outstanding i/o requests to O.S.
4787  * @ha: Pointer to host adapter structure.
4788  * @res: returned scsi status
4789  *
4790  * This routine is called just prior to a HARD RESET to return all
4791  * outstanding commands back to the Operating System.
4792  * Caller should make sure that the following locks are released
4793  * before this calling routine: Hardware lock, and io_request_lock.
4794  **/
4795 static void qla4xxx_abort_active_cmds(struct scsi_qla_host *ha, int res)
4796 {
4797         struct srb *srb;
4798         int i;
4799         unsigned long flags;
4800
4801         spin_lock_irqsave(&ha->hardware_lock, flags);
4802         for (i = 0; i < ha->host->can_queue; i++) {
4803                 srb = qla4xxx_del_from_active_array(ha, i);
4804                 if (srb != NULL) {
4805                         srb->cmd->result = res;
4806                         kref_put(&srb->srb_ref, qla4xxx_srb_compl);
4807                 }
4808         }
4809         spin_unlock_irqrestore(&ha->hardware_lock, flags);
4810 }
4811
4812 void qla4xxx_dead_adapter_cleanup(struct scsi_qla_host *ha)
4813 {
4814         clear_bit(AF_ONLINE, &ha->flags);
4815
4816         /* Disable the board */
4817         ql4_printk(KERN_INFO, ha, "Disabling the board\n");
4818
4819         qla4xxx_abort_active_cmds(ha, DID_NO_CONNECT << 16);
4820         qla4xxx_mark_all_devices_missing(ha);
4821         clear_bit(AF_INIT_DONE, &ha->flags);
4822 }
4823
4824 static void qla4xxx_fail_session(struct iscsi_cls_session *cls_session)
4825 {
4826         struct iscsi_session *sess;
4827         struct ddb_entry *ddb_entry;
4828
4829         sess = cls_session->dd_data;
4830         ddb_entry = sess->dd_data;
4831         ddb_entry->fw_ddb_device_state = DDB_DS_SESSION_FAILED;
4832
4833         if (ddb_entry->ddb_type == FLASH_DDB)
4834                 iscsi_block_session(ddb_entry->sess);
4835         else
4836                 iscsi_session_failure(cls_session->dd_data,
4837                                       ISCSI_ERR_CONN_FAILED);
4838 }
4839
4840 /**
4841  * qla4xxx_recover_adapter - recovers adapter after a fatal error
4842  * @ha: Pointer to host adapter structure.
4843  **/
4844 static int qla4xxx_recover_adapter(struct scsi_qla_host *ha)
4845 {
4846         int status = QLA_ERROR;
4847         uint8_t reset_chip = 0;
4848         uint32_t dev_state;
4849         unsigned long wait;
4850
4851         /* Stall incoming I/O until we are done */
4852         scsi_block_requests(ha->host);
4853         clear_bit(AF_ONLINE, &ha->flags);
4854         clear_bit(AF_LINK_UP, &ha->flags);
4855
4856         DEBUG2(ql4_printk(KERN_INFO, ha, "%s: adapter OFFLINE\n", __func__));
4857
4858         set_bit(DPC_RESET_ACTIVE, &ha->dpc_flags);
4859
4860         if ((is_qla8032(ha) || is_qla8042(ha)) &&
4861             !test_bit(DPC_RESET_HA_FW_CONTEXT, &ha->dpc_flags)) {
4862                 ql4_printk(KERN_INFO, ha, "%s: disabling pause transmit on port 0 & 1.\n",
4863                            __func__);
4864                 /* disable pause frame for ISP83xx */
4865                 qla4_83xx_disable_pause(ha);
4866         }
4867
4868         iscsi_host_for_each_session(ha->host, qla4xxx_fail_session);
4869
4870         if (test_bit(DPC_RESET_HA, &ha->dpc_flags))
4871                 reset_chip = 1;
4872
4873         /* For the DPC_RESET_HA_INTR case (ISP-4xxx specific)
4874          * do not reset adapter, jump to initialize_adapter */
4875         if (test_bit(DPC_RESET_HA_INTR, &ha->dpc_flags)) {
4876                 status = QLA_SUCCESS;
4877                 goto recover_ha_init_adapter;
4878         }
4879
4880         /* For the ISP-8xxx adapter, issue a stop_firmware if invoked
4881          * from eh_host_reset or ioctl module */
4882         if (is_qla80XX(ha) && !reset_chip &&
4883             test_bit(DPC_RESET_HA_FW_CONTEXT, &ha->dpc_flags)) {
4884
4885                 DEBUG2(ql4_printk(KERN_INFO, ha,
4886                     "scsi%ld: %s - Performing stop_firmware...\n",
4887                     ha->host_no, __func__));
4888                 status = ha->isp_ops->reset_firmware(ha);
4889                 if (status == QLA_SUCCESS) {
4890                         ha->isp_ops->disable_intrs(ha);
4891                         qla4xxx_process_aen(ha, FLUSH_DDB_CHANGED_AENS);
4892                         qla4xxx_abort_active_cmds(ha, DID_RESET << 16);
4893                 } else {
4894                         /* If the stop_firmware fails then
4895                          * reset the entire chip */
4896                         reset_chip = 1;
4897                         clear_bit(DPC_RESET_HA_FW_CONTEXT, &ha->dpc_flags);
4898                         set_bit(DPC_RESET_HA, &ha->dpc_flags);
4899                 }
4900         }
4901
4902         /* Issue full chip reset if recovering from a catastrophic error,
4903          * or if stop_firmware fails for ISP-8xxx.
4904          * This is the default case for ISP-4xxx */
4905         if (is_qla40XX(ha) || reset_chip) {
4906                 if (is_qla40XX(ha))
4907                         goto chip_reset;
4908
4909                 /* Check if 8XXX firmware is alive or not
4910                  * We may have arrived here from NEED_RESET
4911                  * detection only */
4912                 if (test_bit(AF_FW_RECOVERY, &ha->flags))
4913                         goto chip_reset;
4914
4915                 wait = jiffies + (FW_ALIVE_WAIT_TOV * HZ);
4916                 while (time_before(jiffies, wait)) {
4917                         if (qla4_8xxx_check_fw_alive(ha)) {
4918                                 qla4xxx_mailbox_premature_completion(ha);
4919                                 break;
4920                         }
4921
4922                         set_current_state(TASK_UNINTERRUPTIBLE);
4923                         schedule_timeout(HZ);
4924                 }
4925 chip_reset:
4926                 if (!test_bit(AF_FW_RECOVERY, &ha->flags))
4927                         qla4xxx_cmd_wait(ha);
4928
4929                 qla4xxx_process_aen(ha, FLUSH_DDB_CHANGED_AENS);
4930                 DEBUG2(ql4_printk(KERN_INFO, ha,
4931                     "scsi%ld: %s - Performing chip reset..\n",
4932                     ha->host_no, __func__));
4933                 status = ha->isp_ops->reset_chip(ha);
4934                 qla4xxx_abort_active_cmds(ha, DID_RESET << 16);
4935         }
4936
4937         /* Flush any pending ddb changed AENs */
4938         qla4xxx_process_aen(ha, FLUSH_DDB_CHANGED_AENS);
4939
4940 recover_ha_init_adapter:
4941         /* Upon successful firmware/chip reset, re-initialize the adapter */
4942         if (status == QLA_SUCCESS) {
4943                 /* For ISP-4xxx, force function 1 to always initialize
4944                  * before function 3 to prevent both funcions from
4945                  * stepping on top of the other */
4946                 if (is_qla40XX(ha) && (ha->mac_index == 3))
4947                         ssleep(6);
4948
4949                 /* NOTE: AF_ONLINE flag set upon successful completion of
4950                  * qla4xxx_initialize_adapter */
4951                 status = qla4xxx_initialize_adapter(ha, RESET_ADAPTER);
4952                 if (is_qla80XX(ha) && (status == QLA_ERROR)) {
4953                         status = qla4_8xxx_check_init_adapter_retry(ha);
4954                         if (status == QLA_ERROR) {
4955                                 ql4_printk(KERN_INFO, ha, "scsi%ld: %s: Don't retry recover adapter\n",
4956                                            ha->host_no, __func__);
4957                                 qla4xxx_dead_adapter_cleanup(ha);
4958                                 clear_bit(DPC_RETRY_RESET_HA, &ha->dpc_flags);
4959                                 clear_bit(DPC_RESET_HA, &ha->dpc_flags);
4960                                 clear_bit(DPC_RESET_HA_FW_CONTEXT,
4961                                           &ha->dpc_flags);
4962                                 goto exit_recover;
4963                         }
4964                 }
4965         }
4966
4967         /* Retry failed adapter initialization, if necessary
4968          * Do not retry initialize_adapter for RESET_HA_INTR (ISP-4xxx specific)
4969          * case to prevent ping-pong resets between functions */
4970         if (!test_bit(AF_ONLINE, &ha->flags) &&
4971             !test_bit(DPC_RESET_HA_INTR, &ha->dpc_flags)) {
4972                 /* Adapter initialization failed, see if we can retry
4973                  * resetting the ha.
4974                  * Since we don't want to block the DPC for too long
4975                  * with multiple resets in the same thread,
4976                  * utilize DPC to retry */
4977                 if (is_qla80XX(ha)) {
4978                         ha->isp_ops->idc_lock(ha);
4979                         dev_state = qla4_8xxx_rd_direct(ha,
4980                                                         QLA8XXX_CRB_DEV_STATE);
4981                         ha->isp_ops->idc_unlock(ha);
4982                         if (dev_state == QLA8XXX_DEV_FAILED) {
4983                                 ql4_printk(KERN_INFO, ha, "%s: don't retry "
4984                                            "recover adapter. H/W is in Failed "
4985                                            "state\n", __func__);
4986                                 qla4xxx_dead_adapter_cleanup(ha);
4987                                 clear_bit(DPC_RETRY_RESET_HA, &ha->dpc_flags);
4988                                 clear_bit(DPC_RESET_HA, &ha->dpc_flags);
4989                                 clear_bit(DPC_RESET_HA_FW_CONTEXT,
4990                                                 &ha->dpc_flags);
4991                                 status = QLA_ERROR;
4992
4993                                 goto exit_recover;
4994                         }
4995                 }
4996
4997                 if (!test_bit(DPC_RETRY_RESET_HA, &ha->dpc_flags)) {
4998                         ha->retry_reset_ha_cnt = MAX_RESET_HA_RETRIES;
4999                         DEBUG2(printk("scsi%ld: recover adapter - retrying "
5000                                       "(%d) more times\n", ha->host_no,
5001                                       ha->retry_reset_ha_cnt));
5002                         set_bit(DPC_RETRY_RESET_HA, &ha->dpc_flags);
5003                         status = QLA_ERROR;
5004                 } else {
5005                         if (ha->retry_reset_ha_cnt > 0) {
5006                                 /* Schedule another Reset HA--DPC will retry */
5007                                 ha->retry_reset_ha_cnt--;
5008                                 DEBUG2(printk("scsi%ld: recover adapter - "
5009                                               "retry remaining %d\n",
5010                                               ha->host_no,
5011                                               ha->retry_reset_ha_cnt));
5012                                 status = QLA_ERROR;
5013                         }
5014
5015                         if (ha->retry_reset_ha_cnt == 0) {
5016                                 /* Recover adapter retries have been exhausted.
5017                                  * Adapter DEAD */
5018                                 DEBUG2(printk("scsi%ld: recover adapter "
5019                                               "failed - board disabled\n",
5020                                               ha->host_no));
5021                                 qla4xxx_dead_adapter_cleanup(ha);
5022                                 clear_bit(DPC_RETRY_RESET_HA, &ha->dpc_flags);
5023                                 clear_bit(DPC_RESET_HA, &ha->dpc_flags);
5024                                 clear_bit(DPC_RESET_HA_FW_CONTEXT,
5025                                           &ha->dpc_flags);
5026                                 status = QLA_ERROR;
5027                         }
5028                 }
5029         } else {
5030                 clear_bit(DPC_RESET_HA, &ha->dpc_flags);
5031                 clear_bit(DPC_RESET_HA_FW_CONTEXT, &ha->dpc_flags);
5032                 clear_bit(DPC_RETRY_RESET_HA, &ha->dpc_flags);
5033         }
5034
5035 exit_recover:
5036         ha->adapter_error_count++;
5037
5038         if (test_bit(AF_ONLINE, &ha->flags))
5039                 ha->isp_ops->enable_intrs(ha);
5040
5041         scsi_unblock_requests(ha->host);
5042
5043         clear_bit(DPC_RESET_ACTIVE, &ha->dpc_flags);
5044         DEBUG2(printk("scsi%ld: recover adapter: %s\n", ha->host_no,
5045             status == QLA_ERROR ? "FAILED" : "SUCCEEDED"));
5046
5047         return status;
5048 }
5049
5050 static void qla4xxx_relogin_devices(struct iscsi_cls_session *cls_session)
5051 {
5052         struct iscsi_session *sess;
5053         struct ddb_entry *ddb_entry;
5054         struct scsi_qla_host *ha;
5055
5056         sess = cls_session->dd_data;
5057         ddb_entry = sess->dd_data;
5058         ha = ddb_entry->ha;
5059         if (!iscsi_is_session_online(cls_session)) {
5060                 if (ddb_entry->fw_ddb_device_state == DDB_DS_SESSION_ACTIVE) {
5061                         ql4_printk(KERN_INFO, ha, "scsi%ld: %s: ddb[%d]"
5062                                    " unblock session\n", ha->host_no, __func__,
5063                                    ddb_entry->fw_ddb_index);
5064                         iscsi_unblock_session(ddb_entry->sess);
5065                 } else {
5066                         /* Trigger relogin */
5067                         if (ddb_entry->ddb_type == FLASH_DDB) {
5068                                 if (!(test_bit(DF_RELOGIN, &ddb_entry->flags) ||
5069                                       test_bit(DF_DISABLE_RELOGIN,
5070                                                &ddb_entry->flags)))
5071                                         qla4xxx_arm_relogin_timer(ddb_entry);
5072                         } else
5073                                 iscsi_session_failure(cls_session->dd_data,
5074                                                       ISCSI_ERR_CONN_FAILED);
5075                 }
5076         }
5077 }
5078
5079 int qla4xxx_unblock_flash_ddb(struct iscsi_cls_session *cls_session)
5080 {
5081         struct iscsi_session *sess;
5082         struct ddb_entry *ddb_entry;
5083         struct scsi_qla_host *ha;
5084
5085         sess = cls_session->dd_data;
5086         ddb_entry = sess->dd_data;
5087         ha = ddb_entry->ha;
5088         ql4_printk(KERN_INFO, ha, "scsi%ld: %s: ddb[%d]"
5089                    " unblock session\n", ha->host_no, __func__,
5090                    ddb_entry->fw_ddb_index);
5091
5092         iscsi_unblock_session(ddb_entry->sess);
5093
5094         /* Start scan target */
5095         if (test_bit(AF_ONLINE, &ha->flags)) {
5096                 ql4_printk(KERN_INFO, ha, "scsi%ld: %s: ddb[%d]"
5097                            " start scan\n", ha->host_no, __func__,
5098                            ddb_entry->fw_ddb_index);
5099                 scsi_queue_work(ha->host, &ddb_entry->sess->scan_work);
5100         }
5101         return QLA_SUCCESS;
5102 }
5103
5104 int qla4xxx_unblock_ddb(struct iscsi_cls_session *cls_session)
5105 {
5106         struct iscsi_session *sess;
5107         struct ddb_entry *ddb_entry;
5108         struct scsi_qla_host *ha;
5109         int status = QLA_SUCCESS;
5110
5111         sess = cls_session->dd_data;
5112         ddb_entry = sess->dd_data;
5113         ha = ddb_entry->ha;
5114         ql4_printk(KERN_INFO, ha, "scsi%ld: %s: ddb[%d]"
5115                    " unblock user space session\n", ha->host_no, __func__,
5116                    ddb_entry->fw_ddb_index);
5117
5118         if (!iscsi_is_session_online(cls_session)) {
5119                 iscsi_conn_start(ddb_entry->conn);
5120                 iscsi_conn_login_event(ddb_entry->conn,
5121                                        ISCSI_CONN_STATE_LOGGED_IN);
5122         } else {
5123                 ql4_printk(KERN_INFO, ha,
5124                            "scsi%ld: %s: ddb[%d] session [%d] already logged in\n",
5125                            ha->host_no, __func__, ddb_entry->fw_ddb_index,
5126                            cls_session->sid);
5127                 status = QLA_ERROR;
5128         }
5129
5130         return status;
5131 }
5132
5133 static void qla4xxx_relogin_all_devices(struct scsi_qla_host *ha)
5134 {
5135         iscsi_host_for_each_session(ha->host, qla4xxx_relogin_devices);
5136 }
5137
5138 static void qla4xxx_relogin_flash_ddb(struct iscsi_cls_session *cls_sess)
5139 {
5140         uint16_t relogin_timer;
5141         struct iscsi_session *sess;
5142         struct ddb_entry *ddb_entry;
5143         struct scsi_qla_host *ha;
5144
5145         sess = cls_sess->dd_data;
5146         ddb_entry = sess->dd_data;
5147         ha = ddb_entry->ha;
5148
5149         relogin_timer = max(ddb_entry->default_relogin_timeout,
5150                             (uint16_t)RELOGIN_TOV);
5151         atomic_set(&ddb_entry->relogin_timer, relogin_timer);
5152
5153         DEBUG2(ql4_printk(KERN_INFO, ha,
5154                           "scsi%ld: Relogin index [%d]. TOV=%d\n", ha->host_no,
5155                           ddb_entry->fw_ddb_index, relogin_timer));
5156
5157         qla4xxx_login_flash_ddb(cls_sess);
5158 }
5159
5160 static void qla4xxx_dpc_relogin(struct iscsi_cls_session *cls_sess)
5161 {
5162         struct iscsi_session *sess;
5163         struct ddb_entry *ddb_entry;
5164         struct scsi_qla_host *ha;
5165
5166         sess = cls_sess->dd_data;
5167         ddb_entry = sess->dd_data;
5168         ha = ddb_entry->ha;
5169
5170         if (!(ddb_entry->ddb_type == FLASH_DDB))
5171                 return;
5172
5173         if (test_bit(DF_DISABLE_RELOGIN, &ddb_entry->flags))
5174                 return;
5175
5176         if (test_and_clear_bit(DF_RELOGIN, &ddb_entry->flags) &&
5177             !iscsi_is_session_online(cls_sess)) {
5178                 DEBUG2(ql4_printk(KERN_INFO, ha,
5179                                   "relogin issued\n"));
5180                 qla4xxx_relogin_flash_ddb(cls_sess);
5181         }
5182 }
5183
5184 void qla4xxx_wake_dpc(struct scsi_qla_host *ha)
5185 {
5186         if (ha->dpc_thread)
5187                 queue_work(ha->dpc_thread, &ha->dpc_work);
5188 }
5189
5190 static struct qla4_work_evt *
5191 qla4xxx_alloc_work(struct scsi_qla_host *ha, uint32_t data_size,
5192                    enum qla4_work_type type)
5193 {
5194         struct qla4_work_evt *e;
5195         uint32_t size = sizeof(struct qla4_work_evt) + data_size;
5196
5197         e = kzalloc(size, GFP_ATOMIC);
5198         if (!e)
5199                 return NULL;
5200
5201         INIT_LIST_HEAD(&e->list);
5202         e->type = type;
5203         return e;
5204 }
5205
5206 static void qla4xxx_post_work(struct scsi_qla_host *ha,
5207                              struct qla4_work_evt *e)
5208 {
5209         unsigned long flags;
5210
5211         spin_lock_irqsave(&ha->work_lock, flags);
5212         list_add_tail(&e->list, &ha->work_list);
5213         spin_unlock_irqrestore(&ha->work_lock, flags);
5214         qla4xxx_wake_dpc(ha);
5215 }
5216
5217 int qla4xxx_post_aen_work(struct scsi_qla_host *ha,
5218                           enum iscsi_host_event_code aen_code,
5219                           uint32_t data_size, uint8_t *data)
5220 {
5221         struct qla4_work_evt *e;
5222
5223         e = qla4xxx_alloc_work(ha, data_size, QLA4_EVENT_AEN);
5224         if (!e)
5225                 return QLA_ERROR;
5226
5227         e->u.aen.code = aen_code;
5228         e->u.aen.data_size = data_size;
5229         memcpy(e->u.aen.data, data, data_size);
5230
5231         qla4xxx_post_work(ha, e);
5232
5233         return QLA_SUCCESS;
5234 }
5235
5236 int qla4xxx_post_ping_evt_work(struct scsi_qla_host *ha,
5237                                uint32_t status, uint32_t pid,
5238                                uint32_t data_size, uint8_t *data)
5239 {
5240         struct qla4_work_evt *e;
5241
5242         e = qla4xxx_alloc_work(ha, data_size, QLA4_EVENT_PING_STATUS);
5243         if (!e)
5244                 return QLA_ERROR;
5245
5246         e->u.ping.status = status;
5247         e->u.ping.pid = pid;
5248         e->u.ping.data_size = data_size;
5249         memcpy(e->u.ping.data, data, data_size);
5250
5251         qla4xxx_post_work(ha, e);
5252
5253         return QLA_SUCCESS;
5254 }
5255
5256 static void qla4xxx_do_work(struct scsi_qla_host *ha)
5257 {
5258         struct qla4_work_evt *e, *tmp;
5259         unsigned long flags;
5260         LIST_HEAD(work);
5261
5262         spin_lock_irqsave(&ha->work_lock, flags);
5263         list_splice_init(&ha->work_list, &work);
5264         spin_unlock_irqrestore(&ha->work_lock, flags);
5265
5266         list_for_each_entry_safe(e, tmp, &work, list) {
5267                 list_del_init(&e->list);
5268
5269                 switch (e->type) {
5270                 case QLA4_EVENT_AEN:
5271                         iscsi_post_host_event(ha->host_no,
5272                                               &qla4xxx_iscsi_transport,
5273                                               e->u.aen.code,
5274                                               e->u.aen.data_size,
5275                                               e->u.aen.data);
5276                         break;
5277                 case QLA4_EVENT_PING_STATUS:
5278                         iscsi_ping_comp_event(ha->host_no,
5279                                               &qla4xxx_iscsi_transport,
5280                                               e->u.ping.status,
5281                                               e->u.ping.pid,
5282                                               e->u.ping.data_size,
5283                                               e->u.ping.data);
5284                         break;
5285                 default:
5286                         ql4_printk(KERN_WARNING, ha, "event type: 0x%x not "
5287                                    "supported", e->type);
5288                 }
5289                 kfree(e);
5290         }
5291 }
5292
5293 /**
5294  * qla4xxx_do_dpc - dpc routine
5295  * @work: Context to obtain pointer to host adapter structure.
5296  *
5297  * This routine is a task that is schedule by the interrupt handler
5298  * to perform the background processing for interrupts.  We put it
5299  * on a task queue that is consumed whenever the scheduler runs; that's
5300  * so you can do anything (i.e. put the process to sleep etc).  In fact,
5301  * the mid-level tries to sleep when it reaches the driver threshold
5302  * "host->can_queue". This can cause a panic if we were in our interrupt code.
5303  **/
5304 static void qla4xxx_do_dpc(struct work_struct *work)
5305 {
5306         struct scsi_qla_host *ha =
5307                 container_of(work, struct scsi_qla_host, dpc_work);
5308         int status = QLA_ERROR;
5309
5310         DEBUG2(ql4_printk(KERN_INFO, ha,
5311                           "scsi%ld: %s: DPC handler waking up. flags = 0x%08lx, dpc_flags = 0x%08lx\n",
5312                           ha->host_no, __func__, ha->flags, ha->dpc_flags));
5313
5314         /* Initialization not yet finished. Don't do anything yet. */
5315         if (!test_bit(AF_INIT_DONE, &ha->flags))
5316                 return;
5317
5318         if (test_bit(AF_EEH_BUSY, &ha->flags)) {
5319                 DEBUG2(printk(KERN_INFO "scsi%ld: %s: flags = %lx\n",
5320                     ha->host_no, __func__, ha->flags));
5321                 return;
5322         }
5323
5324         /* post events to application */
5325         qla4xxx_do_work(ha);
5326
5327         if (is_qla80XX(ha)) {
5328                 if (test_bit(DPC_HA_UNRECOVERABLE, &ha->dpc_flags)) {
5329                         if (is_qla8032(ha) || is_qla8042(ha)) {
5330                                 ql4_printk(KERN_INFO, ha, "%s: disabling pause transmit on port 0 & 1.\n",
5331                                            __func__);
5332                                 /* disable pause frame for ISP83xx */
5333                                 qla4_83xx_disable_pause(ha);
5334                         }
5335
5336                         ha->isp_ops->idc_lock(ha);
5337                         qla4_8xxx_wr_direct(ha, QLA8XXX_CRB_DEV_STATE,
5338                                             QLA8XXX_DEV_FAILED);
5339                         ha->isp_ops->idc_unlock(ha);
5340                         ql4_printk(KERN_INFO, ha, "HW State: FAILED\n");
5341                         qla4_8xxx_device_state_handler(ha);
5342                 }
5343
5344                 if (test_bit(DPC_POST_IDC_ACK, &ha->dpc_flags)) {
5345                         if (is_qla8042(ha)) {
5346                                 if (ha->idc_info.info2 &
5347                                     ENABLE_INTERNAL_LOOPBACK) {
5348                                         ql4_printk(KERN_INFO, ha, "%s: Disabling ACB\n",
5349                                                    __func__);
5350                                         status = qla4_84xx_config_acb(ha,
5351                                                             ACB_CONFIG_DISABLE);
5352                                         if (status != QLA_SUCCESS) {
5353                                                 ql4_printk(KERN_INFO, ha, "%s: ACB config failed\n",
5354                                                            __func__);
5355                                         }
5356                                 }
5357                         }
5358                         qla4_83xx_post_idc_ack(ha);
5359                         clear_bit(DPC_POST_IDC_ACK, &ha->dpc_flags);
5360                 }
5361
5362                 if (is_qla8042(ha) &&
5363                     test_bit(DPC_RESTORE_ACB, &ha->dpc_flags)) {
5364                         ql4_printk(KERN_INFO, ha, "%s: Restoring ACB\n",
5365                                    __func__);
5366                         if (qla4_84xx_config_acb(ha, ACB_CONFIG_SET) !=
5367                             QLA_SUCCESS) {
5368                                 ql4_printk(KERN_INFO, ha, "%s: ACB config failed ",
5369                                            __func__);
5370                         }
5371                         clear_bit(DPC_RESTORE_ACB, &ha->dpc_flags);
5372                 }
5373
5374                 if (test_and_clear_bit(DPC_HA_NEED_QUIESCENT, &ha->dpc_flags)) {
5375                         qla4_8xxx_need_qsnt_handler(ha);
5376                 }
5377         }
5378
5379         if (!test_bit(DPC_RESET_ACTIVE, &ha->dpc_flags) &&
5380             (test_bit(DPC_RESET_HA, &ha->dpc_flags) ||
5381             test_bit(DPC_RESET_HA_INTR, &ha->dpc_flags) ||
5382             test_bit(DPC_RESET_HA_FW_CONTEXT, &ha->dpc_flags))) {
5383                 if ((is_qla8022(ha) && ql4xdontresethba) ||
5384                     ((is_qla8032(ha) || is_qla8042(ha)) &&
5385                      qla4_83xx_idc_dontreset(ha))) {
5386                         DEBUG2(printk("scsi%ld: %s: Don't Reset HBA\n",
5387                             ha->host_no, __func__));
5388                         clear_bit(DPC_RESET_HA, &ha->dpc_flags);
5389                         clear_bit(DPC_RESET_HA_INTR, &ha->dpc_flags);
5390                         clear_bit(DPC_RESET_HA_FW_CONTEXT, &ha->dpc_flags);
5391                         goto dpc_post_reset_ha;
5392                 }
5393                 if (test_bit(DPC_RESET_HA_FW_CONTEXT, &ha->dpc_flags) ||
5394                     test_bit(DPC_RESET_HA, &ha->dpc_flags))
5395                         qla4xxx_recover_adapter(ha);
5396
5397                 if (test_bit(DPC_RESET_HA_INTR, &ha->dpc_flags)) {
5398                         uint8_t wait_time = RESET_INTR_TOV;
5399
5400                         while ((readw(&ha->reg->ctrl_status) &
5401                                 (CSR_SOFT_RESET | CSR_FORCE_SOFT_RESET)) != 0) {
5402                                 if (--wait_time == 0)
5403                                         break;
5404                                 msleep(1000);
5405                         }
5406                         if (wait_time == 0)
5407                                 DEBUG2(printk("scsi%ld: %s: SR|FSR "
5408                                               "bit not cleared-- resetting\n",
5409                                               ha->host_no, __func__));
5410                         qla4xxx_abort_active_cmds(ha, DID_RESET << 16);
5411                         if (ql4xxx_lock_drvr_wait(ha) == QLA_SUCCESS) {
5412                                 qla4xxx_process_aen(ha, FLUSH_DDB_CHANGED_AENS);
5413                                 status = qla4xxx_recover_adapter(ha);
5414                         }
5415                         clear_bit(DPC_RESET_HA_INTR, &ha->dpc_flags);
5416                         if (status == QLA_SUCCESS)
5417                                 ha->isp_ops->enable_intrs(ha);
5418                 }
5419         }
5420
5421 dpc_post_reset_ha:
5422         /* ---- process AEN? --- */
5423         if (test_and_clear_bit(DPC_AEN, &ha->dpc_flags))
5424                 qla4xxx_process_aen(ha, PROCESS_ALL_AENS);
5425
5426         /* ---- Get DHCP IP Address? --- */
5427         if (test_and_clear_bit(DPC_GET_DHCP_IP_ADDR, &ha->dpc_flags))
5428                 qla4xxx_get_dhcp_ip_address(ha);
5429
5430         /* ---- relogin device? --- */
5431         if (adapter_up(ha) &&
5432             test_and_clear_bit(DPC_RELOGIN_DEVICE, &ha->dpc_flags)) {
5433                 iscsi_host_for_each_session(ha->host, qla4xxx_dpc_relogin);
5434         }
5435
5436         /* ---- link change? --- */
5437         if (!test_bit(AF_LOOPBACK, &ha->flags) &&
5438             test_and_clear_bit(DPC_LINK_CHANGED, &ha->dpc_flags)) {
5439                 if (!test_bit(AF_LINK_UP, &ha->flags)) {
5440                         /* ---- link down? --- */
5441                         qla4xxx_mark_all_devices_missing(ha);
5442                 } else {
5443                         /* ---- link up? --- *
5444                          * F/W will auto login to all devices ONLY ONCE after
5445                          * link up during driver initialization and runtime
5446                          * fatal error recovery.  Therefore, the driver must
5447                          * manually relogin to devices when recovering from
5448                          * connection failures, logouts, expired KATO, etc. */
5449                         if (test_and_clear_bit(AF_BUILD_DDB_LIST, &ha->flags)) {
5450                                 qla4xxx_build_ddb_list(ha, ha->is_reset);
5451                                 iscsi_host_for_each_session(ha->host,
5452                                                 qla4xxx_login_flash_ddb);
5453                         } else
5454                                 qla4xxx_relogin_all_devices(ha);
5455                 }
5456         }
5457         if (test_and_clear_bit(DPC_SYSFS_DDB_EXPORT, &ha->dpc_flags)) {
5458                 if (qla4xxx_sysfs_ddb_export(ha))
5459                         ql4_printk(KERN_ERR, ha, "%s: Error exporting ddb to sysfs\n",
5460                                    __func__);
5461         }
5462 }
5463
5464 /**
5465  * qla4xxx_free_adapter - release the adapter
5466  * @ha: pointer to adapter structure
5467  **/
5468 static void qla4xxx_free_adapter(struct scsi_qla_host *ha)
5469 {
5470         qla4xxx_abort_active_cmds(ha, DID_NO_CONNECT << 16);
5471
5472         /* Turn-off interrupts on the card. */
5473         ha->isp_ops->disable_intrs(ha);
5474
5475         if (is_qla40XX(ha)) {
5476                 writel(set_rmask(CSR_SCSI_PROCESSOR_INTR),
5477                        &ha->reg->ctrl_status);
5478                 readl(&ha->reg->ctrl_status);
5479         } else if (is_qla8022(ha)) {
5480                 writel(0, &ha->qla4_82xx_reg->host_int);
5481                 readl(&ha->qla4_82xx_reg->host_int);
5482         } else if (is_qla8032(ha) || is_qla8042(ha)) {
5483                 writel(0, &ha->qla4_83xx_reg->risc_intr);
5484                 readl(&ha->qla4_83xx_reg->risc_intr);
5485         }
5486
5487         /* Remove timer thread, if present */
5488         if (ha->timer_active)
5489                 qla4xxx_stop_timer(ha);
5490
5491         /* Kill the kernel thread for this host */
5492         if (ha->dpc_thread)
5493                 destroy_workqueue(ha->dpc_thread);
5494
5495         /* Kill the kernel thread for this host */
5496         if (ha->task_wq)
5497                 destroy_workqueue(ha->task_wq);
5498
5499         /* Put firmware in known state */
5500         ha->isp_ops->reset_firmware(ha);
5501
5502         if (is_qla80XX(ha)) {
5503                 ha->isp_ops->idc_lock(ha);
5504                 qla4_8xxx_clear_drv_active(ha);
5505                 ha->isp_ops->idc_unlock(ha);
5506         }
5507
5508         /* Detach interrupts */
5509         qla4xxx_free_irqs(ha);
5510
5511         /* free extra memory */
5512         qla4xxx_mem_free(ha);
5513 }
5514
5515 int qla4_8xxx_iospace_config(struct scsi_qla_host *ha)
5516 {
5517         int status = 0;
5518         unsigned long mem_base, mem_len;
5519         struct pci_dev *pdev = ha->pdev;
5520
5521         status = pci_request_regions(pdev, DRIVER_NAME);
5522         if (status) {
5523                 printk(KERN_WARNING
5524                     "scsi(%ld) Failed to reserve PIO regions (%s) "
5525                     "status=%d\n", ha->host_no, pci_name(pdev), status);
5526                 goto iospace_error_exit;
5527         }
5528
5529         DEBUG2(printk(KERN_INFO "%s: revision-id=%d\n",
5530             __func__, pdev->revision));
5531         ha->revision_id = pdev->revision;
5532
5533         /* remap phys address */
5534         mem_base = pci_resource_start(pdev, 0); /* 0 is for BAR 0 */
5535         mem_len = pci_resource_len(pdev, 0);
5536         DEBUG2(printk(KERN_INFO "%s: ioremap from %lx a size of %lx\n",
5537             __func__, mem_base, mem_len));
5538
5539         /* mapping of pcibase pointer */
5540         ha->nx_pcibase = (unsigned long)ioremap(mem_base, mem_len);
5541         if (!ha->nx_pcibase) {
5542                 printk(KERN_ERR
5543                     "cannot remap MMIO (%s), aborting\n", pci_name(pdev));
5544                 pci_release_regions(ha->pdev);
5545                 goto iospace_error_exit;
5546         }
5547
5548         /* Mapping of IO base pointer, door bell read and write pointer */
5549
5550         /* mapping of IO base pointer */
5551         if (is_qla8022(ha)) {
5552                 ha->qla4_82xx_reg = (struct device_reg_82xx  __iomem *)
5553                                     ((uint8_t *)ha->nx_pcibase + 0xbc000 +
5554                                      (ha->pdev->devfn << 11));
5555                 ha->nx_db_wr_ptr = (ha->pdev->devfn == 4 ? QLA82XX_CAM_RAM_DB1 :
5556                                     QLA82XX_CAM_RAM_DB2);
5557         } else if (is_qla8032(ha) || is_qla8042(ha)) {
5558                 ha->qla4_83xx_reg = (struct device_reg_83xx __iomem *)
5559                                     ((uint8_t *)ha->nx_pcibase);
5560         }
5561
5562         return 0;
5563 iospace_error_exit:
5564         return -ENOMEM;
5565 }
5566
5567 /***
5568  * qla4xxx_iospace_config - maps registers
5569  * @ha: pointer to adapter structure
5570  *
5571  * This routines maps HBA's registers from the pci address space
5572  * into the kernel virtual address space for memory mapped i/o.
5573  **/
5574 int qla4xxx_iospace_config(struct scsi_qla_host *ha)
5575 {
5576         unsigned long pio, pio_len, pio_flags;
5577         unsigned long mmio, mmio_len, mmio_flags;
5578
5579         pio = pci_resource_start(ha->pdev, 0);
5580         pio_len = pci_resource_len(ha->pdev, 0);
5581         pio_flags = pci_resource_flags(ha->pdev, 0);
5582         if (pio_flags & IORESOURCE_IO) {
5583                 if (pio_len < MIN_IOBASE_LEN) {
5584                         ql4_printk(KERN_WARNING, ha,
5585                                 "Invalid PCI I/O region size\n");
5586                         pio = 0;
5587                 }
5588         } else {
5589                 ql4_printk(KERN_WARNING, ha, "region #0 not a PIO resource\n");
5590                 pio = 0;
5591         }
5592
5593         /* Use MMIO operations for all accesses. */
5594         mmio = pci_resource_start(ha->pdev, 1);
5595         mmio_len = pci_resource_len(ha->pdev, 1);
5596         mmio_flags = pci_resource_flags(ha->pdev, 1);
5597
5598         if (!(mmio_flags & IORESOURCE_MEM)) {
5599                 ql4_printk(KERN_ERR, ha,
5600                     "region #0 not an MMIO resource, aborting\n");
5601
5602                 goto iospace_error_exit;
5603         }
5604
5605         if (mmio_len < MIN_IOBASE_LEN) {
5606                 ql4_printk(KERN_ERR, ha,
5607                     "Invalid PCI mem region size, aborting\n");
5608                 goto iospace_error_exit;
5609         }
5610
5611         if (pci_request_regions(ha->pdev, DRIVER_NAME)) {
5612                 ql4_printk(KERN_WARNING, ha,
5613                     "Failed to reserve PIO/MMIO regions\n");
5614
5615                 goto iospace_error_exit;
5616         }
5617
5618         ha->pio_address = pio;
5619         ha->pio_length = pio_len;
5620         ha->reg = ioremap(mmio, MIN_IOBASE_LEN);
5621         if (!ha->reg) {
5622                 ql4_printk(KERN_ERR, ha,
5623                     "cannot remap MMIO, aborting\n");
5624
5625                 goto iospace_error_exit;
5626         }
5627
5628         return 0;
5629
5630 iospace_error_exit:
5631         return -ENOMEM;
5632 }
5633
5634 static struct isp_operations qla4xxx_isp_ops = {
5635         .iospace_config         = qla4xxx_iospace_config,
5636         .pci_config             = qla4xxx_pci_config,
5637         .disable_intrs          = qla4xxx_disable_intrs,
5638         .enable_intrs           = qla4xxx_enable_intrs,
5639         .start_firmware         = qla4xxx_start_firmware,
5640         .intr_handler           = qla4xxx_intr_handler,
5641         .interrupt_service_routine = qla4xxx_interrupt_service_routine,
5642         .reset_chip             = qla4xxx_soft_reset,
5643         .reset_firmware         = qla4xxx_hw_reset,
5644         .queue_iocb             = qla4xxx_queue_iocb,
5645         .complete_iocb          = qla4xxx_complete_iocb,
5646         .rd_shdw_req_q_out      = qla4xxx_rd_shdw_req_q_out,
5647         .rd_shdw_rsp_q_in       = qla4xxx_rd_shdw_rsp_q_in,
5648         .get_sys_info           = qla4xxx_get_sys_info,
5649         .queue_mailbox_command  = qla4xxx_queue_mbox_cmd,
5650         .process_mailbox_interrupt = qla4xxx_process_mbox_intr,
5651 };
5652
5653 static struct isp_operations qla4_82xx_isp_ops = {
5654         .iospace_config         = qla4_8xxx_iospace_config,
5655         .pci_config             = qla4_8xxx_pci_config,
5656         .disable_intrs          = qla4_82xx_disable_intrs,
5657         .enable_intrs           = qla4_82xx_enable_intrs,
5658         .start_firmware         = qla4_8xxx_load_risc,
5659         .restart_firmware       = qla4_82xx_try_start_fw,
5660         .intr_handler           = qla4_82xx_intr_handler,
5661         .interrupt_service_routine = qla4_82xx_interrupt_service_routine,
5662         .need_reset             = qla4_8xxx_need_reset,
5663         .reset_chip             = qla4_82xx_isp_reset,
5664         .reset_firmware         = qla4_8xxx_stop_firmware,
5665         .queue_iocb             = qla4_82xx_queue_iocb,
5666         .complete_iocb          = qla4_82xx_complete_iocb,
5667         .rd_shdw_req_q_out      = qla4_82xx_rd_shdw_req_q_out,
5668         .rd_shdw_rsp_q_in       = qla4_82xx_rd_shdw_rsp_q_in,
5669         .get_sys_info           = qla4_8xxx_get_sys_info,
5670         .rd_reg_direct          = qla4_82xx_rd_32,
5671         .wr_reg_direct          = qla4_82xx_wr_32,
5672         .rd_reg_indirect        = qla4_82xx_md_rd_32,
5673         .wr_reg_indirect        = qla4_82xx_md_wr_32,
5674         .idc_lock               = qla4_82xx_idc_lock,
5675         .idc_unlock             = qla4_82xx_idc_unlock,
5676         .rom_lock_recovery      = qla4_82xx_rom_lock_recovery,
5677         .queue_mailbox_command  = qla4_82xx_queue_mbox_cmd,
5678         .process_mailbox_interrupt = qla4_82xx_process_mbox_intr,
5679 };
5680
5681 static struct isp_operations qla4_83xx_isp_ops = {
5682         .iospace_config         = qla4_8xxx_iospace_config,
5683         .pci_config             = qla4_8xxx_pci_config,
5684         .disable_intrs          = qla4_83xx_disable_intrs,
5685         .enable_intrs           = qla4_83xx_enable_intrs,
5686         .start_firmware         = qla4_8xxx_load_risc,
5687         .restart_firmware       = qla4_83xx_start_firmware,
5688         .intr_handler           = qla4_83xx_intr_handler,
5689         .interrupt_service_routine = qla4_83xx_interrupt_service_routine,
5690         .need_reset             = qla4_8xxx_need_reset,
5691         .reset_chip             = qla4_83xx_isp_reset,
5692         .reset_firmware         = qla4_8xxx_stop_firmware,
5693         .queue_iocb             = qla4_83xx_queue_iocb,
5694         .complete_iocb          = qla4_83xx_complete_iocb,
5695         .rd_shdw_req_q_out      = qla4xxx_rd_shdw_req_q_out,
5696         .rd_shdw_rsp_q_in       = qla4xxx_rd_shdw_rsp_q_in,
5697         .get_sys_info           = qla4_8xxx_get_sys_info,
5698         .rd_reg_direct          = qla4_83xx_rd_reg,
5699         .wr_reg_direct          = qla4_83xx_wr_reg,
5700         .rd_reg_indirect        = qla4_83xx_rd_reg_indirect,
5701         .wr_reg_indirect        = qla4_83xx_wr_reg_indirect,
5702         .idc_lock               = qla4_83xx_drv_lock,
5703         .idc_unlock             = qla4_83xx_drv_unlock,
5704         .rom_lock_recovery      = qla4_83xx_rom_lock_recovery,
5705         .queue_mailbox_command  = qla4_83xx_queue_mbox_cmd,
5706         .process_mailbox_interrupt = qla4_83xx_process_mbox_intr,
5707 };
5708
5709 uint16_t qla4xxx_rd_shdw_req_q_out(struct scsi_qla_host *ha)
5710 {
5711         return (uint16_t)le32_to_cpu(ha->shadow_regs->req_q_out);
5712 }
5713
5714 uint16_t qla4_82xx_rd_shdw_req_q_out(struct scsi_qla_host *ha)
5715 {
5716         return (uint16_t)le32_to_cpu(readl(&ha->qla4_82xx_reg->req_q_out));
5717 }
5718
5719 uint16_t qla4xxx_rd_shdw_rsp_q_in(struct scsi_qla_host *ha)
5720 {
5721         return (uint16_t)le32_to_cpu(ha->shadow_regs->rsp_q_in);
5722 }
5723
5724 uint16_t qla4_82xx_rd_shdw_rsp_q_in(struct scsi_qla_host *ha)
5725 {
5726         return (uint16_t)le32_to_cpu(readl(&ha->qla4_82xx_reg->rsp_q_in));
5727 }
5728
5729 static ssize_t qla4xxx_show_boot_eth_info(void *data, int type, char *buf)
5730 {
5731         struct scsi_qla_host *ha = data;
5732         char *str = buf;
5733         int rc;
5734
5735         switch (type) {
5736         case ISCSI_BOOT_ETH_FLAGS:
5737                 rc = sprintf(str, "%d\n", SYSFS_FLAG_FW_SEL_BOOT);
5738                 break;
5739         case ISCSI_BOOT_ETH_INDEX:
5740                 rc = sprintf(str, "0\n");
5741                 break;
5742         case ISCSI_BOOT_ETH_MAC:
5743                 rc = sysfs_format_mac(str, ha->my_mac,
5744                                       MAC_ADDR_LEN);
5745                 break;
5746         default:
5747                 rc = -ENOSYS;
5748                 break;
5749         }
5750         return rc;
5751 }
5752
5753 static umode_t qla4xxx_eth_get_attr_visibility(void *data, int type)
5754 {
5755         int rc;
5756
5757         switch (type) {
5758         case ISCSI_BOOT_ETH_FLAGS:
5759         case ISCSI_BOOT_ETH_MAC:
5760         case ISCSI_BOOT_ETH_INDEX:
5761                 rc = S_IRUGO;
5762                 break;
5763         default:
5764                 rc = 0;
5765                 break;
5766         }
5767         return rc;
5768 }
5769
5770 static ssize_t qla4xxx_show_boot_ini_info(void *data, int type, char *buf)
5771 {
5772         struct scsi_qla_host *ha = data;
5773         char *str = buf;
5774         int rc;
5775
5776         switch (type) {
5777         case ISCSI_BOOT_INI_INITIATOR_NAME:
5778                 rc = sprintf(str, "%s\n", ha->name_string);
5779                 break;
5780         default:
5781                 rc = -ENOSYS;
5782                 break;
5783         }
5784         return rc;
5785 }
5786
5787 static umode_t qla4xxx_ini_get_attr_visibility(void *data, int type)
5788 {
5789         int rc;
5790
5791         switch (type) {
5792         case ISCSI_BOOT_INI_INITIATOR_NAME:
5793                 rc = S_IRUGO;
5794                 break;
5795         default:
5796                 rc = 0;
5797                 break;
5798         }
5799         return rc;
5800 }
5801
5802 static ssize_t
5803 qla4xxx_show_boot_tgt_info(struct ql4_boot_session_info *boot_sess, int type,
5804                            char *buf)
5805 {
5806         struct ql4_conn_info *boot_conn = &boot_sess->conn_list[0];
5807         char *str = buf;
5808         int rc;
5809
5810         switch (type) {
5811         case ISCSI_BOOT_TGT_NAME:
5812                 rc = sprintf(buf, "%s\n", (char *)&boot_sess->target_name);
5813                 break;
5814         case ISCSI_BOOT_TGT_IP_ADDR:
5815                 if (boot_sess->conn_list[0].dest_ipaddr.ip_type == 0x1)
5816                         rc = sprintf(buf, "%pI4\n",
5817                                      &boot_conn->dest_ipaddr.ip_address);
5818                 else
5819                         rc = sprintf(str, "%pI6\n",
5820                                      &boot_conn->dest_ipaddr.ip_address);
5821                 break;
5822         case ISCSI_BOOT_TGT_PORT:
5823                         rc = sprintf(str, "%d\n", boot_conn->dest_port);
5824                 break;
5825         case ISCSI_BOOT_TGT_CHAP_NAME:
5826                 rc = sprintf(str,  "%.*s\n",
5827                              boot_conn->chap.target_chap_name_length,
5828                              (char *)&boot_conn->chap.target_chap_name);
5829                 break;
5830         case ISCSI_BOOT_TGT_CHAP_SECRET:
5831                 rc = sprintf(str,  "%.*s\n",
5832                              boot_conn->chap.target_secret_length,
5833                              (char *)&boot_conn->chap.target_secret);
5834                 break;
5835         case ISCSI_BOOT_TGT_REV_CHAP_NAME:
5836                 rc = sprintf(str,  "%.*s\n",
5837                              boot_conn->chap.intr_chap_name_length,
5838                              (char *)&boot_conn->chap.intr_chap_name);
5839                 break;
5840         case ISCSI_BOOT_TGT_REV_CHAP_SECRET:
5841                 rc = sprintf(str,  "%.*s\n",
5842                              boot_conn->chap.intr_secret_length,
5843                              (char *)&boot_conn->chap.intr_secret);
5844                 break;
5845         case ISCSI_BOOT_TGT_FLAGS:
5846                 rc = sprintf(str, "%d\n", SYSFS_FLAG_FW_SEL_BOOT);
5847                 break;
5848         case ISCSI_BOOT_TGT_NIC_ASSOC:
5849                 rc = sprintf(str, "0\n");
5850                 break;
5851         default:
5852                 rc = -ENOSYS;
5853                 break;
5854         }
5855         return rc;
5856 }
5857
5858 static ssize_t qla4xxx_show_boot_tgt_pri_info(void *data, int type, char *buf)
5859 {
5860         struct scsi_qla_host *ha = data;
5861         struct ql4_boot_session_info *boot_sess = &(ha->boot_tgt.boot_pri_sess);
5862
5863         return qla4xxx_show_boot_tgt_info(boot_sess, type, buf);
5864 }
5865
5866 static ssize_t qla4xxx_show_boot_tgt_sec_info(void *data, int type, char *buf)
5867 {
5868         struct scsi_qla_host *ha = data;
5869         struct ql4_boot_session_info *boot_sess = &(ha->boot_tgt.boot_sec_sess);
5870
5871         return qla4xxx_show_boot_tgt_info(boot_sess, type, buf);
5872 }
5873
5874 static umode_t qla4xxx_tgt_get_attr_visibility(void *data, int type)
5875 {
5876         int rc;
5877
5878         switch (type) {
5879         case ISCSI_BOOT_TGT_NAME:
5880         case ISCSI_BOOT_TGT_IP_ADDR:
5881         case ISCSI_BOOT_TGT_PORT:
5882         case ISCSI_BOOT_TGT_CHAP_NAME:
5883         case ISCSI_BOOT_TGT_CHAP_SECRET:
5884         case ISCSI_BOOT_TGT_REV_CHAP_NAME:
5885         case ISCSI_BOOT_TGT_REV_CHAP_SECRET:
5886         case ISCSI_BOOT_TGT_NIC_ASSOC:
5887         case ISCSI_BOOT_TGT_FLAGS:
5888                 rc = S_IRUGO;
5889                 break;
5890         default:
5891                 rc = 0;
5892                 break;
5893         }
5894         return rc;
5895 }
5896
5897 static void qla4xxx_boot_release(void *data)
5898 {
5899         struct scsi_qla_host *ha = data;
5900
5901         scsi_host_put(ha->host);
5902 }
5903
5904 static int get_fw_boot_info(struct scsi_qla_host *ha, uint16_t ddb_index[])
5905 {
5906         dma_addr_t buf_dma;
5907         uint32_t addr, pri_addr, sec_addr;
5908         uint32_t offset;
5909         uint16_t func_num;
5910         uint8_t val;
5911         uint8_t *buf = NULL;
5912         size_t size = 13 * sizeof(uint8_t);
5913         int ret = QLA_SUCCESS;
5914
5915         func_num = PCI_FUNC(ha->pdev->devfn);
5916
5917         ql4_printk(KERN_INFO, ha, "%s: Get FW boot info for 0x%x func %d\n",
5918                    __func__, ha->pdev->device, func_num);
5919
5920         if (is_qla40XX(ha)) {
5921                 if (func_num == 1) {
5922                         addr = NVRAM_PORT0_BOOT_MODE;
5923                         pri_addr = NVRAM_PORT0_BOOT_PRI_TGT;
5924                         sec_addr = NVRAM_PORT0_BOOT_SEC_TGT;
5925                 } else if (func_num == 3) {
5926                         addr = NVRAM_PORT1_BOOT_MODE;
5927                         pri_addr = NVRAM_PORT1_BOOT_PRI_TGT;
5928                         sec_addr = NVRAM_PORT1_BOOT_SEC_TGT;
5929                 } else {
5930                         ret = QLA_ERROR;
5931                         goto exit_boot_info;
5932                 }
5933
5934                 /* Check Boot Mode */
5935                 val = rd_nvram_byte(ha, addr);
5936                 if (!(val & 0x07)) {
5937                         DEBUG2(ql4_printk(KERN_INFO, ha, "%s: Adapter boot "
5938                                           "options : 0x%x\n", __func__, val));
5939                         ret = QLA_ERROR;
5940                         goto exit_boot_info;
5941                 }
5942
5943                 /* get primary valid target index */
5944                 val = rd_nvram_byte(ha, pri_addr);
5945                 if (val & BIT_7)
5946                         ddb_index[0] = (val & 0x7f);
5947
5948                 /* get secondary valid target index */
5949                 val = rd_nvram_byte(ha, sec_addr);
5950                 if (val & BIT_7)
5951                         ddb_index[1] = (val & 0x7f);
5952                 goto exit_boot_info;
5953         } else if (is_qla80XX(ha)) {
5954                 buf = dma_alloc_coherent(&ha->pdev->dev, size,
5955                                          &buf_dma, GFP_KERNEL);
5956                 if (!buf) {
5957                         DEBUG2(ql4_printk(KERN_ERR, ha,
5958                                           "%s: Unable to allocate dma buffer\n",
5959                                            __func__));
5960                         ret = QLA_ERROR;
5961                         goto exit_boot_info;
5962                 }
5963
5964                 if (ha->port_num == 0)
5965                         offset = BOOT_PARAM_OFFSET_PORT0;
5966                 else if (ha->port_num == 1)
5967                         offset = BOOT_PARAM_OFFSET_PORT1;
5968                 else {
5969                         ret = QLA_ERROR;
5970                         goto exit_boot_info_free;
5971                 }
5972                 addr = FLASH_RAW_ACCESS_ADDR + (ha->hw.flt_iscsi_param * 4) +
5973                        offset;
5974                 if (qla4xxx_get_flash(ha, buf_dma, addr,
5975                                       13 * sizeof(uint8_t)) != QLA_SUCCESS) {
5976                         DEBUG2(ql4_printk(KERN_ERR, ha, "scsi%ld: %s: Get Flash"
5977                                           " failed\n", ha->host_no, __func__));
5978                         ret = QLA_ERROR;
5979                         goto exit_boot_info_free;
5980                 }
5981                 /* Check Boot Mode */
5982                 if (!(buf[1] & 0x07)) {
5983                         DEBUG2(ql4_printk(KERN_INFO, ha, "Firmware boot options"
5984                                           " : 0x%x\n", buf[1]));
5985                         ret = QLA_ERROR;
5986                         goto exit_boot_info_free;
5987                 }
5988
5989                 /* get primary valid target index */
5990                 if (buf[2] & BIT_7)
5991                         ddb_index[0] = buf[2] & 0x7f;
5992
5993                 /* get secondary valid target index */
5994                 if (buf[11] & BIT_7)
5995                         ddb_index[1] = buf[11] & 0x7f;
5996         } else {
5997                 ret = QLA_ERROR;
5998                 goto exit_boot_info;
5999         }
6000
6001         DEBUG2(ql4_printk(KERN_INFO, ha, "%s: Primary target ID %d, Secondary"
6002                           " target ID %d\n", __func__, ddb_index[0],
6003                           ddb_index[1]));
6004
6005 exit_boot_info_free:
6006         dma_free_coherent(&ha->pdev->dev, size, buf, buf_dma);
6007 exit_boot_info:
6008         ha->pri_ddb_idx = ddb_index[0];
6009         ha->sec_ddb_idx = ddb_index[1];
6010         return ret;
6011 }
6012
6013 /**
6014  * qla4xxx_get_bidi_chap - Get a BIDI CHAP user and password
6015  * @ha: pointer to adapter structure
6016  * @username: CHAP username to be returned
6017  * @password: CHAP password to be returned
6018  *
6019  * If a boot entry has BIDI CHAP enabled then we need to set the BIDI CHAP
6020  * user and password in the sysfs entry in /sys/firmware/iscsi_boot#/.
6021  * So from the CHAP cache find the first BIDI CHAP entry and set it
6022  * to the boot record in sysfs.
6023  **/
6024 static int qla4xxx_get_bidi_chap(struct scsi_qla_host *ha, char *username,
6025                             char *password)
6026 {
6027         int i, ret = -EINVAL;
6028         int max_chap_entries = 0;
6029         struct ql4_chap_table *chap_table;
6030
6031         if (is_qla80XX(ha))
6032                 max_chap_entries = (ha->hw.flt_chap_size / 2) /
6033                                                 sizeof(struct ql4_chap_table);
6034         else
6035                 max_chap_entries = MAX_CHAP_ENTRIES_40XX;
6036
6037         if (!ha->chap_list) {
6038                 ql4_printk(KERN_ERR, ha, "Do not have CHAP table cache\n");
6039                 return ret;
6040         }
6041
6042         mutex_lock(&ha->chap_sem);
6043         for (i = 0; i < max_chap_entries; i++) {
6044                 chap_table = (struct ql4_chap_table *)ha->chap_list + i;
6045                 if (chap_table->cookie !=
6046                     __constant_cpu_to_le16(CHAP_VALID_COOKIE)) {
6047                         continue;
6048                 }
6049
6050                 if (chap_table->flags & BIT_7) /* local */
6051                         continue;
6052
6053                 if (!(chap_table->flags & BIT_6)) /* Not BIDI */
6054                         continue;
6055
6056                 strlcpy(password, chap_table->secret, QL4_CHAP_MAX_SECRET_LEN);
6057                 strlcpy(username, chap_table->name, QL4_CHAP_MAX_NAME_LEN);
6058                 ret = 0;
6059                 break;
6060         }
6061         mutex_unlock(&ha->chap_sem);
6062
6063         return ret;
6064 }
6065
6066
6067 static int qla4xxx_get_boot_target(struct scsi_qla_host *ha,
6068                                    struct ql4_boot_session_info *boot_sess,
6069                                    uint16_t ddb_index)
6070 {
6071         struct ql4_conn_info *boot_conn = &boot_sess->conn_list[0];
6072         struct dev_db_entry *fw_ddb_entry;
6073         dma_addr_t fw_ddb_entry_dma;
6074         uint16_t idx;
6075         uint16_t options;
6076         int ret = QLA_SUCCESS;
6077
6078         fw_ddb_entry = dma_alloc_coherent(&ha->pdev->dev, sizeof(*fw_ddb_entry),
6079                                           &fw_ddb_entry_dma, GFP_KERNEL);
6080         if (!fw_ddb_entry) {
6081                 DEBUG2(ql4_printk(KERN_ERR, ha,
6082                                   "%s: Unable to allocate dma buffer.\n",
6083                                   __func__));
6084                 ret = QLA_ERROR;
6085                 return ret;
6086         }
6087
6088         if (qla4xxx_bootdb_by_index(ha, fw_ddb_entry,
6089                                    fw_ddb_entry_dma, ddb_index)) {
6090                 DEBUG2(ql4_printk(KERN_INFO, ha, "%s: No Flash DDB found at "
6091                                   "index [%d]\n", __func__, ddb_index));
6092                 ret = QLA_ERROR;
6093                 goto exit_boot_target;
6094         }
6095
6096         /* Update target name and IP from DDB */
6097         memcpy(boot_sess->target_name, fw_ddb_entry->iscsi_name,
6098                min(sizeof(boot_sess->target_name),
6099                    sizeof(fw_ddb_entry->iscsi_name)));
6100
6101         options = le16_to_cpu(fw_ddb_entry->options);
6102         if (options & DDB_OPT_IPV6_DEVICE) {
6103                 memcpy(&boot_conn->dest_ipaddr.ip_address,
6104                        &fw_ddb_entry->ip_addr[0], IPv6_ADDR_LEN);
6105         } else {
6106                 boot_conn->dest_ipaddr.ip_type = 0x1;
6107                 memcpy(&boot_conn->dest_ipaddr.ip_address,
6108                        &fw_ddb_entry->ip_addr[0], IP_ADDR_LEN);
6109         }
6110
6111         boot_conn->dest_port = le16_to_cpu(fw_ddb_entry->port);
6112
6113         /* update chap information */
6114         idx = __le16_to_cpu(fw_ddb_entry->chap_tbl_idx);
6115
6116         if (BIT_7 & le16_to_cpu(fw_ddb_entry->iscsi_options))   {
6117
6118                 DEBUG2(ql4_printk(KERN_INFO, ha, "Setting chap\n"));
6119
6120                 ret = qla4xxx_get_chap(ha, (char *)&boot_conn->chap.
6121                                        target_chap_name,
6122                                        (char *)&boot_conn->chap.target_secret,
6123                                        idx);
6124                 if (ret) {
6125                         ql4_printk(KERN_ERR, ha, "Failed to set chap\n");
6126                         ret = QLA_ERROR;
6127                         goto exit_boot_target;
6128                 }
6129
6130                 boot_conn->chap.target_chap_name_length = QL4_CHAP_MAX_NAME_LEN;
6131                 boot_conn->chap.target_secret_length = QL4_CHAP_MAX_SECRET_LEN;
6132         }
6133
6134         if (BIT_4 & le16_to_cpu(fw_ddb_entry->iscsi_options)) {
6135
6136                 DEBUG2(ql4_printk(KERN_INFO, ha, "Setting BIDI chap\n"));
6137
6138                 ret = qla4xxx_get_bidi_chap(ha,
6139                                     (char *)&boot_conn->chap.intr_chap_name,
6140                                     (char *)&boot_conn->chap.intr_secret);
6141
6142                 if (ret) {
6143                         ql4_printk(KERN_ERR, ha, "Failed to set BIDI chap\n");
6144                         ret = QLA_ERROR;
6145                         goto exit_boot_target;
6146                 }
6147
6148                 boot_conn->chap.intr_chap_name_length = QL4_CHAP_MAX_NAME_LEN;
6149                 boot_conn->chap.intr_secret_length = QL4_CHAP_MAX_SECRET_LEN;
6150         }
6151
6152 exit_boot_target:
6153         dma_free_coherent(&ha->pdev->dev, sizeof(*fw_ddb_entry),
6154                           fw_ddb_entry, fw_ddb_entry_dma);
6155         return ret;
6156 }
6157
6158 static int qla4xxx_get_boot_info(struct scsi_qla_host *ha)
6159 {
6160         uint16_t ddb_index[2];
6161         int ret = QLA_ERROR;
6162         int rval;
6163
6164         memset(ddb_index, 0, sizeof(ddb_index));
6165         ddb_index[0] = 0xffff;
6166         ddb_index[1] = 0xffff;
6167         ret = get_fw_boot_info(ha, ddb_index);
6168         if (ret != QLA_SUCCESS) {
6169                 DEBUG2(ql4_printk(KERN_INFO, ha,
6170                                 "%s: No boot target configured.\n", __func__));
6171                 return ret;
6172         }
6173
6174         if (ql4xdisablesysfsboot)
6175                 return QLA_SUCCESS;
6176
6177         if (ddb_index[0] == 0xffff)
6178                 goto sec_target;
6179
6180         rval = qla4xxx_get_boot_target(ha, &(ha->boot_tgt.boot_pri_sess),
6181                                       ddb_index[0]);
6182         if (rval != QLA_SUCCESS) {
6183                 DEBUG2(ql4_printk(KERN_INFO, ha, "%s: Primary boot target not "
6184                                   "configured\n", __func__));
6185         } else
6186                 ret = QLA_SUCCESS;
6187
6188 sec_target:
6189         if (ddb_index[1] == 0xffff)
6190                 goto exit_get_boot_info;
6191
6192         rval = qla4xxx_get_boot_target(ha, &(ha->boot_tgt.boot_sec_sess),
6193                                       ddb_index[1]);
6194         if (rval != QLA_SUCCESS) {
6195                 DEBUG2(ql4_printk(KERN_INFO, ha, "%s: Secondary boot target not"
6196                                   " configured\n", __func__));
6197         } else
6198                 ret = QLA_SUCCESS;
6199
6200 exit_get_boot_info:
6201         return ret;
6202 }
6203
6204 static int qla4xxx_setup_boot_info(struct scsi_qla_host *ha)
6205 {
6206         struct iscsi_boot_kobj *boot_kobj;
6207
6208         if (qla4xxx_get_boot_info(ha) != QLA_SUCCESS)
6209                 return QLA_ERROR;
6210
6211         if (ql4xdisablesysfsboot) {
6212                 ql4_printk(KERN_INFO, ha,
6213                            "%s: syfsboot disabled - driver will trigger login "
6214                            "and publish session for discovery .\n", __func__);
6215                 return QLA_SUCCESS;
6216         }
6217
6218
6219         ha->boot_kset = iscsi_boot_create_host_kset(ha->host->host_no);
6220         if (!ha->boot_kset)
6221                 goto kset_free;
6222
6223         if (!scsi_host_get(ha->host))
6224                 goto kset_free;
6225         boot_kobj = iscsi_boot_create_target(ha->boot_kset, 0, ha,
6226                                              qla4xxx_show_boot_tgt_pri_info,
6227                                              qla4xxx_tgt_get_attr_visibility,
6228                                              qla4xxx_boot_release);
6229         if (!boot_kobj)
6230                 goto put_host;
6231
6232         if (!scsi_host_get(ha->host))
6233                 goto kset_free;
6234         boot_kobj = iscsi_boot_create_target(ha->boot_kset, 1, ha,
6235                                              qla4xxx_show_boot_tgt_sec_info,
6236                                              qla4xxx_tgt_get_attr_visibility,
6237                                              qla4xxx_boot_release);
6238         if (!boot_kobj)
6239                 goto put_host;
6240
6241         if (!scsi_host_get(ha->host))
6242                 goto kset_free;
6243         boot_kobj = iscsi_boot_create_initiator(ha->boot_kset, 0, ha,
6244                                                qla4xxx_show_boot_ini_info,
6245                                                qla4xxx_ini_get_attr_visibility,
6246                                                qla4xxx_boot_release);
6247         if (!boot_kobj)
6248                 goto put_host;
6249
6250         if (!scsi_host_get(ha->host))
6251                 goto kset_free;
6252         boot_kobj = iscsi_boot_create_ethernet(ha->boot_kset, 0, ha,
6253                                                qla4xxx_show_boot_eth_info,
6254                                                qla4xxx_eth_get_attr_visibility,
6255                                                qla4xxx_boot_release);
6256         if (!boot_kobj)
6257                 goto put_host;
6258
6259         return QLA_SUCCESS;
6260
6261 put_host:
6262         scsi_host_put(ha->host);
6263 kset_free:
6264         iscsi_boot_destroy_kset(ha->boot_kset);
6265         return -ENOMEM;
6266 }
6267
6268
6269 static void qla4xxx_get_param_ddb(struct ddb_entry *ddb_entry,
6270                                   struct ql4_tuple_ddb *tddb)
6271 {
6272         struct iscsi_cls_session *cls_sess;
6273         struct iscsi_cls_conn *cls_conn;
6274         struct iscsi_session *sess;
6275         struct iscsi_conn *conn;
6276
6277         DEBUG2(printk(KERN_INFO "Func: %s\n", __func__));
6278         cls_sess = ddb_entry->sess;
6279         sess = cls_sess->dd_data;
6280         cls_conn = ddb_entry->conn;
6281         conn = cls_conn->dd_data;
6282
6283         tddb->tpgt = sess->tpgt;
6284         tddb->port = conn->persistent_port;
6285         strlcpy(tddb->iscsi_name, sess->targetname, ISCSI_NAME_SIZE);
6286         strlcpy(tddb->ip_addr, conn->persistent_address, DDB_IPADDR_LEN);
6287 }
6288
6289 static void qla4xxx_convert_param_ddb(struct dev_db_entry *fw_ddb_entry,
6290                                       struct ql4_tuple_ddb *tddb,
6291                                       uint8_t *flash_isid)
6292 {
6293         uint16_t options = 0;
6294
6295         tddb->tpgt = le32_to_cpu(fw_ddb_entry->tgt_portal_grp);
6296         memcpy(&tddb->iscsi_name[0], &fw_ddb_entry->iscsi_name[0],
6297                min(sizeof(tddb->iscsi_name), sizeof(fw_ddb_entry->iscsi_name)));
6298
6299         options = le16_to_cpu(fw_ddb_entry->options);
6300         if (options & DDB_OPT_IPV6_DEVICE)
6301                 sprintf(tddb->ip_addr, "%pI6", fw_ddb_entry->ip_addr);
6302         else
6303                 sprintf(tddb->ip_addr, "%pI4", fw_ddb_entry->ip_addr);
6304
6305         tddb->port = le16_to_cpu(fw_ddb_entry->port);
6306
6307         if (flash_isid == NULL)
6308                 memcpy(&tddb->isid[0], &fw_ddb_entry->isid[0],
6309                        sizeof(tddb->isid));
6310         else
6311                 memcpy(&tddb->isid[0], &flash_isid[0], sizeof(tddb->isid));
6312 }
6313
6314 static int qla4xxx_compare_tuple_ddb(struct scsi_qla_host *ha,
6315                                      struct ql4_tuple_ddb *old_tddb,
6316                                      struct ql4_tuple_ddb *new_tddb,
6317                                      uint8_t is_isid_compare)
6318 {
6319         if (strcmp(old_tddb->iscsi_name, new_tddb->iscsi_name))
6320                 return QLA_ERROR;
6321
6322         if (strcmp(old_tddb->ip_addr, new_tddb->ip_addr))
6323                 return QLA_ERROR;
6324
6325         if (old_tddb->port != new_tddb->port)
6326                 return QLA_ERROR;
6327
6328         /* For multi sessions, driver generates the ISID, so do not compare
6329          * ISID in reset path since it would be a comparison between the
6330          * driver generated ISID and firmware generated ISID. This could
6331          * lead to adding duplicated DDBs in the list as driver generated
6332          * ISID would not match firmware generated ISID.
6333          */
6334         if (is_isid_compare) {
6335                 DEBUG2(ql4_printk(KERN_INFO, ha,
6336                         "%s: old ISID [%pmR] New ISID [%pmR]\n",
6337                         __func__, old_tddb->isid, new_tddb->isid));
6338
6339                 if (memcmp(&old_tddb->isid[0], &new_tddb->isid[0],
6340                            sizeof(old_tddb->isid)))
6341                         return QLA_ERROR;
6342         }
6343
6344         DEBUG2(ql4_printk(KERN_INFO, ha,
6345                           "Match Found, fw[%d,%d,%s,%s], [%d,%d,%s,%s]",
6346                           old_tddb->port, old_tddb->tpgt, old_tddb->ip_addr,
6347                           old_tddb->iscsi_name, new_tddb->port, new_tddb->tpgt,
6348                           new_tddb->ip_addr, new_tddb->iscsi_name));
6349
6350         return QLA_SUCCESS;
6351 }
6352
6353 static int qla4xxx_is_session_exists(struct scsi_qla_host *ha,
6354                                      struct dev_db_entry *fw_ddb_entry,
6355                                      uint32_t *index)
6356 {
6357         struct ddb_entry *ddb_entry;
6358         struct ql4_tuple_ddb *fw_tddb = NULL;
6359         struct ql4_tuple_ddb *tmp_tddb = NULL;
6360         int idx;
6361         int ret = QLA_ERROR;
6362
6363         fw_tddb = vzalloc(sizeof(*fw_tddb));
6364         if (!fw_tddb) {
6365                 DEBUG2(ql4_printk(KERN_WARNING, ha,
6366                                   "Memory Allocation failed.\n"));
6367                 ret = QLA_SUCCESS;
6368                 goto exit_check;
6369         }
6370
6371         tmp_tddb = vzalloc(sizeof(*tmp_tddb));
6372         if (!tmp_tddb) {
6373                 DEBUG2(ql4_printk(KERN_WARNING, ha,
6374                                   "Memory Allocation failed.\n"));
6375                 ret = QLA_SUCCESS;
6376                 goto exit_check;
6377         }
6378
6379         qla4xxx_convert_param_ddb(fw_ddb_entry, fw_tddb, NULL);
6380
6381         for (idx = 0; idx < MAX_DDB_ENTRIES; idx++) {
6382                 ddb_entry = qla4xxx_lookup_ddb_by_fw_index(ha, idx);
6383                 if (ddb_entry == NULL)
6384                         continue;
6385
6386                 qla4xxx_get_param_ddb(ddb_entry, tmp_tddb);
6387                 if (!qla4xxx_compare_tuple_ddb(ha, fw_tddb, tmp_tddb, false)) {
6388                         ret = QLA_SUCCESS; /* found */
6389                         if (index != NULL)
6390                                 *index = idx;
6391                         goto exit_check;
6392                 }
6393         }
6394
6395 exit_check:
6396         vfree(fw_tddb);
6397         vfree(tmp_tddb);
6398         return ret;
6399 }
6400
6401 /**
6402  * qla4xxx_check_existing_isid - check if target with same isid exist
6403  *                               in target list
6404  * @list_nt: list of target
6405  * @isid: isid to check
6406  *
6407  * This routine return QLA_SUCCESS if target with same isid exist
6408  **/
6409 static int qla4xxx_check_existing_isid(struct list_head *list_nt, uint8_t *isid)
6410 {
6411         struct qla_ddb_index *nt_ddb_idx, *nt_ddb_idx_tmp;
6412         struct dev_db_entry *fw_ddb_entry;
6413
6414         list_for_each_entry_safe(nt_ddb_idx, nt_ddb_idx_tmp, list_nt, list) {
6415                 fw_ddb_entry = &nt_ddb_idx->fw_ddb;
6416
6417                 if (memcmp(&fw_ddb_entry->isid[0], &isid[0],
6418                            sizeof(nt_ddb_idx->fw_ddb.isid)) == 0) {
6419                         return QLA_SUCCESS;
6420                 }
6421         }
6422         return QLA_ERROR;
6423 }
6424
6425 /**
6426  * qla4xxx_update_isid - compare ddbs and updated isid
6427  * @ha: Pointer to host adapter structure.
6428  * @list_nt: list of nt target
6429  * @fw_ddb_entry: firmware ddb entry
6430  *
6431  * This routine update isid if ddbs have same iqn, same isid and
6432  * different IP addr.
6433  * Return QLA_SUCCESS if isid is updated.
6434  **/
6435 static int qla4xxx_update_isid(struct scsi_qla_host *ha,
6436                                struct list_head *list_nt,
6437                                struct dev_db_entry *fw_ddb_entry)
6438 {
6439         uint8_t base_value, i;
6440
6441         base_value = fw_ddb_entry->isid[1] & 0x1f;
6442         for (i = 0; i < 8; i++) {
6443                 fw_ddb_entry->isid[1] = (base_value | (i << 5));
6444                 if (qla4xxx_check_existing_isid(list_nt, fw_ddb_entry->isid))
6445                         break;
6446         }
6447
6448         if (!qla4xxx_check_existing_isid(list_nt, fw_ddb_entry->isid))
6449                 return QLA_ERROR;
6450
6451         return QLA_SUCCESS;
6452 }
6453
6454 /**
6455  * qla4xxx_should_update_isid - check if isid need to update
6456  * @ha: Pointer to host adapter structure.
6457  * @old_tddb: ddb tuple
6458  * @new_tddb: ddb tuple
6459  *
6460  * Return QLA_SUCCESS if different IP, different PORT, same iqn,
6461  * same isid
6462  **/
6463 static int qla4xxx_should_update_isid(struct scsi_qla_host *ha,
6464                                       struct ql4_tuple_ddb *old_tddb,
6465                                       struct ql4_tuple_ddb *new_tddb)
6466 {
6467         if (strcmp(old_tddb->ip_addr, new_tddb->ip_addr) == 0) {
6468                 /* Same ip */
6469                 if (old_tddb->port == new_tddb->port)
6470                         return QLA_ERROR;
6471         }
6472
6473         if (strcmp(old_tddb->iscsi_name, new_tddb->iscsi_name))
6474                 /* different iqn */
6475                 return QLA_ERROR;
6476
6477         if (memcmp(&old_tddb->isid[0], &new_tddb->isid[0],
6478                    sizeof(old_tddb->isid)))
6479                 /* different isid */
6480                 return QLA_ERROR;
6481
6482         return QLA_SUCCESS;
6483 }
6484
6485 /**
6486  * qla4xxx_is_flash_ddb_exists - check if fw_ddb_entry already exists in list_nt
6487  * @ha: Pointer to host adapter structure.
6488  * @list_nt: list of nt target.
6489  * @fw_ddb_entry: firmware ddb entry.
6490  *
6491  * This routine check if fw_ddb_entry already exists in list_nt to avoid
6492  * duplicate ddb in list_nt.
6493  * Return QLA_SUCCESS if duplicate ddb exit in list_nl.
6494  * Note: This function also update isid of DDB if required.
6495  **/
6496
6497 static int qla4xxx_is_flash_ddb_exists(struct scsi_qla_host *ha,
6498                                        struct list_head *list_nt,
6499                                        struct dev_db_entry *fw_ddb_entry)
6500 {
6501         struct qla_ddb_index  *nt_ddb_idx, *nt_ddb_idx_tmp;
6502         struct ql4_tuple_ddb *fw_tddb = NULL;
6503         struct ql4_tuple_ddb *tmp_tddb = NULL;
6504         int rval, ret = QLA_ERROR;
6505
6506         fw_tddb = vzalloc(sizeof(*fw_tddb));
6507         if (!fw_tddb) {
6508                 DEBUG2(ql4_printk(KERN_WARNING, ha,
6509                                   "Memory Allocation failed.\n"));
6510                 ret = QLA_SUCCESS;
6511                 goto exit_check;
6512         }
6513
6514         tmp_tddb = vzalloc(sizeof(*tmp_tddb));
6515         if (!tmp_tddb) {
6516                 DEBUG2(ql4_printk(KERN_WARNING, ha,
6517                                   "Memory Allocation failed.\n"));
6518                 ret = QLA_SUCCESS;
6519                 goto exit_check;
6520         }
6521
6522         qla4xxx_convert_param_ddb(fw_ddb_entry, fw_tddb, NULL);
6523
6524         list_for_each_entry_safe(nt_ddb_idx, nt_ddb_idx_tmp, list_nt, list) {
6525                 qla4xxx_convert_param_ddb(&nt_ddb_idx->fw_ddb, tmp_tddb,
6526                                           nt_ddb_idx->flash_isid);
6527                 ret = qla4xxx_compare_tuple_ddb(ha, fw_tddb, tmp_tddb, true);
6528                 /* found duplicate ddb */
6529                 if (ret == QLA_SUCCESS)
6530                         goto exit_check;
6531         }
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, NULL);
6535
6536                 ret = qla4xxx_should_update_isid(ha, tmp_tddb, fw_tddb);
6537                 if (ret == QLA_SUCCESS) {
6538                         rval = qla4xxx_update_isid(ha, list_nt, fw_ddb_entry);
6539                         if (rval == QLA_SUCCESS)
6540                                 ret = QLA_ERROR;
6541                         else
6542                                 ret = QLA_SUCCESS;
6543
6544                         goto exit_check;
6545                 }
6546         }
6547
6548 exit_check:
6549         vfree(fw_tddb);
6550         vfree(tmp_tddb);
6551         return ret;
6552 }
6553
6554 static void qla4xxx_free_ddb_list(struct list_head *list_ddb)
6555 {
6556         struct qla_ddb_index  *ddb_idx, *ddb_idx_tmp;
6557
6558         list_for_each_entry_safe(ddb_idx, ddb_idx_tmp, list_ddb, list) {
6559                 list_del_init(&ddb_idx->list);
6560                 vfree(ddb_idx);
6561         }
6562 }
6563
6564 static struct iscsi_endpoint *qla4xxx_get_ep_fwdb(struct scsi_qla_host *ha,
6565                                         struct dev_db_entry *fw_ddb_entry)
6566 {
6567         struct iscsi_endpoint *ep;
6568         struct sockaddr_in *addr;
6569         struct sockaddr_in6 *addr6;
6570         struct sockaddr *t_addr;
6571         struct sockaddr_storage *dst_addr;
6572         char *ip;
6573
6574         /* TODO: need to destroy on unload iscsi_endpoint*/
6575         dst_addr = vmalloc(sizeof(*dst_addr));
6576         if (!dst_addr)
6577                 return NULL;
6578
6579         if (fw_ddb_entry->options & DDB_OPT_IPV6_DEVICE) {
6580                 t_addr = (struct sockaddr *)dst_addr;
6581                 t_addr->sa_family = AF_INET6;
6582                 addr6 = (struct sockaddr_in6 *)dst_addr;
6583                 ip = (char *)&addr6->sin6_addr;
6584                 memcpy(ip, fw_ddb_entry->ip_addr, IPv6_ADDR_LEN);
6585                 addr6->sin6_port = htons(le16_to_cpu(fw_ddb_entry->port));
6586
6587         } else {
6588                 t_addr = (struct sockaddr *)dst_addr;
6589                 t_addr->sa_family = AF_INET;
6590                 addr = (struct sockaddr_in *)dst_addr;
6591                 ip = (char *)&addr->sin_addr;
6592                 memcpy(ip, fw_ddb_entry->ip_addr, IP_ADDR_LEN);
6593                 addr->sin_port = htons(le16_to_cpu(fw_ddb_entry->port));
6594         }
6595
6596         ep = qla4xxx_ep_connect(ha->host, (struct sockaddr *)dst_addr, 0);
6597         vfree(dst_addr);
6598         return ep;
6599 }
6600
6601 static int qla4xxx_verify_boot_idx(struct scsi_qla_host *ha, uint16_t idx)
6602 {
6603         if (ql4xdisablesysfsboot)
6604                 return QLA_SUCCESS;
6605         if (idx == ha->pri_ddb_idx || idx == ha->sec_ddb_idx)
6606                 return QLA_ERROR;
6607         return QLA_SUCCESS;
6608 }
6609
6610 static void qla4xxx_setup_flash_ddb_entry(struct scsi_qla_host *ha,
6611                                           struct ddb_entry *ddb_entry,
6612                                           uint16_t idx)
6613 {
6614         uint16_t def_timeout;
6615
6616         ddb_entry->ddb_type = FLASH_DDB;
6617         ddb_entry->fw_ddb_index = INVALID_ENTRY;
6618         ddb_entry->fw_ddb_device_state = DDB_DS_NO_CONNECTION_ACTIVE;
6619         ddb_entry->ha = ha;
6620         ddb_entry->unblock_sess = qla4xxx_unblock_flash_ddb;
6621         ddb_entry->ddb_change = qla4xxx_flash_ddb_change;
6622         ddb_entry->chap_tbl_idx = INVALID_ENTRY;
6623
6624         atomic_set(&ddb_entry->retry_relogin_timer, INVALID_ENTRY);
6625         atomic_set(&ddb_entry->relogin_timer, 0);
6626         atomic_set(&ddb_entry->relogin_retry_count, 0);
6627         def_timeout = le16_to_cpu(ddb_entry->fw_ddb_entry.def_timeout);
6628         ddb_entry->default_relogin_timeout =
6629                 (def_timeout > LOGIN_TOV) && (def_timeout < LOGIN_TOV * 10) ?
6630                 def_timeout : LOGIN_TOV;
6631         ddb_entry->default_time2wait =
6632                 le16_to_cpu(ddb_entry->fw_ddb_entry.iscsi_def_time2wait);
6633
6634         if (ql4xdisablesysfsboot &&
6635             (idx == ha->pri_ddb_idx || idx == ha->sec_ddb_idx))
6636                 set_bit(DF_BOOT_TGT, &ddb_entry->flags);
6637 }
6638
6639 static void qla4xxx_wait_for_ip_configuration(struct scsi_qla_host *ha)
6640 {
6641         uint32_t idx = 0;
6642         uint32_t ip_idx[IP_ADDR_COUNT] = {0, 1, 2, 3}; /* 4 IP interfaces */
6643         uint32_t sts[MBOX_REG_COUNT];
6644         uint32_t ip_state;
6645         unsigned long wtime;
6646         int ret;
6647
6648         wtime = jiffies + (HZ * IP_CONFIG_TOV);
6649         do {
6650                 for (idx = 0; idx < IP_ADDR_COUNT; idx++) {
6651                         if (ip_idx[idx] == -1)
6652                                 continue;
6653
6654                         ret = qla4xxx_get_ip_state(ha, 0, ip_idx[idx], sts);
6655
6656                         if (ret == QLA_ERROR) {
6657                                 ip_idx[idx] = -1;
6658                                 continue;
6659                         }
6660
6661                         ip_state = (sts[1] & IP_STATE_MASK) >> IP_STATE_SHIFT;
6662
6663                         DEBUG2(ql4_printk(KERN_INFO, ha,
6664                                           "Waiting for IP state for idx = %d, state = 0x%x\n",
6665                                           ip_idx[idx], ip_state));
6666                         if (ip_state == IP_ADDRSTATE_UNCONFIGURED ||
6667                             ip_state == IP_ADDRSTATE_INVALID ||
6668                             ip_state == IP_ADDRSTATE_PREFERRED ||
6669                             ip_state == IP_ADDRSTATE_DEPRICATED ||
6670                             ip_state == IP_ADDRSTATE_DISABLING)
6671                                 ip_idx[idx] = -1;
6672                 }
6673
6674                 /* Break if all IP states checked */
6675                 if ((ip_idx[0] == -1) &&
6676                     (ip_idx[1] == -1) &&
6677                     (ip_idx[2] == -1) &&
6678                     (ip_idx[3] == -1))
6679                         break;
6680                 schedule_timeout_uninterruptible(HZ);
6681         } while (time_after(wtime, jiffies));
6682 }
6683
6684 static int qla4xxx_cmp_fw_stentry(struct dev_db_entry *fw_ddb_entry,
6685                                   struct dev_db_entry *flash_ddb_entry)
6686 {
6687         uint16_t options = 0;
6688         size_t ip_len = IP_ADDR_LEN;
6689
6690         options = le16_to_cpu(fw_ddb_entry->options);
6691         if (options & DDB_OPT_IPV6_DEVICE)
6692                 ip_len = IPv6_ADDR_LEN;
6693
6694         if (memcmp(fw_ddb_entry->ip_addr, flash_ddb_entry->ip_addr, ip_len))
6695                 return QLA_ERROR;
6696
6697         if (memcmp(&fw_ddb_entry->isid[0], &flash_ddb_entry->isid[0],
6698                    sizeof(fw_ddb_entry->isid)))
6699                 return QLA_ERROR;
6700
6701         if (memcmp(&fw_ddb_entry->port, &flash_ddb_entry->port,
6702                    sizeof(fw_ddb_entry->port)))
6703                 return QLA_ERROR;
6704
6705         return QLA_SUCCESS;
6706 }
6707
6708 static int qla4xxx_find_flash_st_idx(struct scsi_qla_host *ha,
6709                                      struct dev_db_entry *fw_ddb_entry,
6710                                      uint32_t fw_idx, uint32_t *flash_index)
6711 {
6712         struct dev_db_entry *flash_ddb_entry;
6713         dma_addr_t flash_ddb_entry_dma;
6714         uint32_t idx = 0;
6715         int max_ddbs;
6716         int ret = QLA_ERROR, status;
6717
6718         max_ddbs =  is_qla40XX(ha) ? MAX_DEV_DB_ENTRIES_40XX :
6719                                      MAX_DEV_DB_ENTRIES;
6720
6721         flash_ddb_entry = dma_pool_alloc(ha->fw_ddb_dma_pool, GFP_KERNEL,
6722                                          &flash_ddb_entry_dma);
6723         if (flash_ddb_entry == NULL || fw_ddb_entry == NULL) {
6724                 ql4_printk(KERN_ERR, ha, "Out of memory\n");
6725                 goto exit_find_st_idx;
6726         }
6727
6728         status = qla4xxx_flashdb_by_index(ha, flash_ddb_entry,
6729                                           flash_ddb_entry_dma, fw_idx);
6730         if (status == QLA_SUCCESS) {
6731                 status = qla4xxx_cmp_fw_stentry(fw_ddb_entry, flash_ddb_entry);
6732                 if (status == QLA_SUCCESS) {
6733                         *flash_index = fw_idx;
6734                         ret = QLA_SUCCESS;
6735                         goto exit_find_st_idx;
6736                 }
6737         }
6738
6739         for (idx = 0; idx < max_ddbs; idx++) {
6740                 status = qla4xxx_flashdb_by_index(ha, flash_ddb_entry,
6741                                                   flash_ddb_entry_dma, idx);
6742                 if (status == QLA_ERROR)
6743                         continue;
6744
6745                 status = qla4xxx_cmp_fw_stentry(fw_ddb_entry, flash_ddb_entry);
6746                 if (status == QLA_SUCCESS) {
6747                         *flash_index = idx;
6748                         ret = QLA_SUCCESS;
6749                         goto exit_find_st_idx;
6750                 }
6751         }
6752
6753         if (idx == max_ddbs)
6754                 ql4_printk(KERN_ERR, ha, "Failed to find ST [%d] in flash\n",
6755                            fw_idx);
6756
6757 exit_find_st_idx:
6758         if (flash_ddb_entry)
6759                 dma_pool_free(ha->fw_ddb_dma_pool, flash_ddb_entry,
6760                               flash_ddb_entry_dma);
6761
6762         return ret;
6763 }
6764
6765 static void qla4xxx_build_st_list(struct scsi_qla_host *ha,
6766                                   struct list_head *list_st)
6767 {
6768         struct qla_ddb_index  *st_ddb_idx;
6769         int max_ddbs;
6770         int fw_idx_size;
6771         struct dev_db_entry *fw_ddb_entry;
6772         dma_addr_t fw_ddb_dma;
6773         int ret;
6774         uint32_t idx = 0, next_idx = 0;
6775         uint32_t state = 0, conn_err = 0;
6776         uint32_t flash_index = -1;
6777         uint16_t conn_id = 0;
6778
6779         fw_ddb_entry = dma_pool_alloc(ha->fw_ddb_dma_pool, GFP_KERNEL,
6780                                       &fw_ddb_dma);
6781         if (fw_ddb_entry == NULL) {
6782                 DEBUG2(ql4_printk(KERN_ERR, ha, "Out of memory\n"));
6783                 goto exit_st_list;
6784         }
6785
6786         max_ddbs =  is_qla40XX(ha) ? MAX_DEV_DB_ENTRIES_40XX :
6787                                      MAX_DEV_DB_ENTRIES;
6788         fw_idx_size = sizeof(struct qla_ddb_index);
6789
6790         for (idx = 0; idx < max_ddbs; idx = next_idx) {
6791                 ret = qla4xxx_get_fwddb_entry(ha, idx, fw_ddb_entry, fw_ddb_dma,
6792                                               NULL, &next_idx, &state,
6793                                               &conn_err, NULL, &conn_id);
6794                 if (ret == QLA_ERROR)
6795                         break;
6796
6797                 /* Ignore DDB if invalid state (unassigned) */
6798                 if (state == DDB_DS_UNASSIGNED)
6799                         goto continue_next_st;
6800
6801                 /* Check if ST, add to the list_st */
6802                 if (strlen((char *) fw_ddb_entry->iscsi_name) != 0)
6803                         goto continue_next_st;
6804
6805                 st_ddb_idx = vzalloc(fw_idx_size);
6806                 if (!st_ddb_idx)
6807                         break;
6808
6809                 ret = qla4xxx_find_flash_st_idx(ha, fw_ddb_entry, idx,
6810                                                 &flash_index);
6811                 if (ret == QLA_ERROR) {
6812                         ql4_printk(KERN_ERR, ha,
6813                                    "No flash entry for ST at idx [%d]\n", idx);
6814                         st_ddb_idx->flash_ddb_idx = idx;
6815                 } else {
6816                         ql4_printk(KERN_INFO, ha,
6817                                    "ST at idx [%d] is stored at flash [%d]\n",
6818                                    idx, flash_index);
6819                         st_ddb_idx->flash_ddb_idx = flash_index;
6820                 }
6821
6822                 st_ddb_idx->fw_ddb_idx = idx;
6823
6824                 list_add_tail(&st_ddb_idx->list, list_st);
6825 continue_next_st:
6826                 if (next_idx == 0)
6827                         break;
6828         }
6829
6830 exit_st_list:
6831         if (fw_ddb_entry)
6832                 dma_pool_free(ha->fw_ddb_dma_pool, fw_ddb_entry, fw_ddb_dma);
6833 }
6834
6835 /**
6836  * qla4xxx_remove_failed_ddb - Remove inactive or failed ddb from list
6837  * @ha: pointer to adapter structure
6838  * @list_ddb: List from which failed ddb to be removed
6839  *
6840  * Iterate over the list of DDBs and find and remove DDBs that are either in
6841  * no connection active state or failed state
6842  **/
6843 static void qla4xxx_remove_failed_ddb(struct scsi_qla_host *ha,
6844                                       struct list_head *list_ddb)
6845 {
6846         struct qla_ddb_index  *ddb_idx, *ddb_idx_tmp;
6847         uint32_t next_idx = 0;
6848         uint32_t state = 0, conn_err = 0;
6849         int ret;
6850
6851         list_for_each_entry_safe(ddb_idx, ddb_idx_tmp, list_ddb, list) {
6852                 ret = qla4xxx_get_fwddb_entry(ha, ddb_idx->fw_ddb_idx,
6853                                               NULL, 0, NULL, &next_idx, &state,
6854                                               &conn_err, NULL, NULL);
6855                 if (ret == QLA_ERROR)
6856                         continue;
6857
6858                 if (state == DDB_DS_NO_CONNECTION_ACTIVE ||
6859                     state == DDB_DS_SESSION_FAILED) {
6860                         list_del_init(&ddb_idx->list);
6861                         vfree(ddb_idx);
6862                 }
6863         }
6864 }
6865
6866 static void qla4xxx_update_sess_disc_idx(struct scsi_qla_host *ha,
6867                                          struct ddb_entry *ddb_entry,
6868                                          struct dev_db_entry *fw_ddb_entry)
6869 {
6870         struct iscsi_cls_session *cls_sess;
6871         struct iscsi_session *sess;
6872         uint32_t max_ddbs = 0;
6873         uint16_t ddb_link = -1;
6874
6875         max_ddbs =  is_qla40XX(ha) ? MAX_DEV_DB_ENTRIES_40XX :
6876                                      MAX_DEV_DB_ENTRIES;
6877
6878         cls_sess = ddb_entry->sess;
6879         sess = cls_sess->dd_data;
6880
6881         ddb_link = le16_to_cpu(fw_ddb_entry->ddb_link);
6882         if (ddb_link < max_ddbs)
6883                 sess->discovery_parent_idx = ddb_link;
6884         else
6885                 sess->discovery_parent_idx = DDB_NO_LINK;
6886 }
6887
6888 static int qla4xxx_sess_conn_setup(struct scsi_qla_host *ha,
6889                                    struct dev_db_entry *fw_ddb_entry,
6890                                    int is_reset, uint16_t idx)
6891 {
6892         struct iscsi_cls_session *cls_sess;
6893         struct iscsi_session *sess;
6894         struct iscsi_cls_conn *cls_conn;
6895         struct iscsi_endpoint *ep;
6896         uint16_t cmds_max = 32;
6897         uint16_t conn_id = 0;
6898         uint32_t initial_cmdsn = 0;
6899         int ret = QLA_SUCCESS;
6900
6901         struct ddb_entry *ddb_entry = NULL;
6902
6903         /* Create session object, with INVALID_ENTRY,
6904          * the targer_id would get set when we issue the login
6905          */
6906         cls_sess = iscsi_session_setup(&qla4xxx_iscsi_transport, ha->host,
6907                                        cmds_max, sizeof(struct ddb_entry),
6908                                        sizeof(struct ql4_task_data),
6909                                        initial_cmdsn, INVALID_ENTRY);
6910         if (!cls_sess) {
6911                 ret = QLA_ERROR;
6912                 goto exit_setup;
6913         }
6914
6915         /*
6916          * so calling module_put function to decrement the
6917          * reference count.
6918          **/
6919         module_put(qla4xxx_iscsi_transport.owner);
6920         sess = cls_sess->dd_data;
6921         ddb_entry = sess->dd_data;
6922         ddb_entry->sess = cls_sess;
6923
6924         cls_sess->recovery_tmo = ql4xsess_recovery_tmo;
6925         memcpy(&ddb_entry->fw_ddb_entry, fw_ddb_entry,
6926                sizeof(struct dev_db_entry));
6927
6928         qla4xxx_setup_flash_ddb_entry(ha, ddb_entry, idx);
6929
6930         cls_conn = iscsi_conn_setup(cls_sess, sizeof(struct qla_conn), conn_id);
6931
6932         if (!cls_conn) {
6933                 ret = QLA_ERROR;
6934                 goto exit_setup;
6935         }
6936
6937         ddb_entry->conn = cls_conn;
6938
6939         /* Setup ep, for displaying attributes in sysfs */
6940         ep = qla4xxx_get_ep_fwdb(ha, fw_ddb_entry);
6941         if (ep) {
6942                 ep->conn = cls_conn;
6943                 cls_conn->ep = ep;
6944         } else {
6945                 DEBUG2(ql4_printk(KERN_ERR, ha, "Unable to get ep\n"));
6946                 ret = QLA_ERROR;
6947                 goto exit_setup;
6948         }
6949
6950         /* Update sess/conn params */
6951         qla4xxx_copy_fwddb_param(ha, fw_ddb_entry, cls_sess, cls_conn);
6952         qla4xxx_update_sess_disc_idx(ha, ddb_entry, fw_ddb_entry);
6953
6954         if (is_reset == RESET_ADAPTER) {
6955                 iscsi_block_session(cls_sess);
6956                 /* Use the relogin path to discover new devices
6957                  *  by short-circuiting the logic of setting
6958                  *  timer to relogin - instead set the flags
6959                  *  to initiate login right away.
6960                  */
6961                 set_bit(DPC_RELOGIN_DEVICE, &ha->dpc_flags);
6962                 set_bit(DF_RELOGIN, &ddb_entry->flags);
6963         }
6964
6965 exit_setup:
6966         return ret;
6967 }
6968
6969 static void qla4xxx_update_fw_ddb_link(struct scsi_qla_host *ha,
6970                                        struct list_head *list_ddb,
6971                                        struct dev_db_entry *fw_ddb_entry)
6972 {
6973         struct qla_ddb_index  *ddb_idx, *ddb_idx_tmp;
6974         uint16_t ddb_link;
6975
6976         ddb_link = le16_to_cpu(fw_ddb_entry->ddb_link);
6977
6978         list_for_each_entry_safe(ddb_idx, ddb_idx_tmp, list_ddb, list) {
6979                 if (ddb_idx->fw_ddb_idx == ddb_link) {
6980                         DEBUG2(ql4_printk(KERN_INFO, ha,
6981                                           "Updating NT parent idx from [%d] to [%d]\n",
6982                                           ddb_link, ddb_idx->flash_ddb_idx));
6983                         fw_ddb_entry->ddb_link =
6984                                             cpu_to_le16(ddb_idx->flash_ddb_idx);
6985                         return;
6986                 }
6987         }
6988 }
6989
6990 static void qla4xxx_build_nt_list(struct scsi_qla_host *ha,
6991                                   struct list_head *list_nt,
6992                                   struct list_head *list_st,
6993                                   int is_reset)
6994 {
6995         struct dev_db_entry *fw_ddb_entry;
6996         struct ddb_entry *ddb_entry = NULL;
6997         dma_addr_t fw_ddb_dma;
6998         int max_ddbs;
6999         int fw_idx_size;
7000         int ret;
7001         uint32_t idx = 0, next_idx = 0;
7002         uint32_t state = 0, conn_err = 0;
7003         uint32_t ddb_idx = -1;
7004         uint16_t conn_id = 0;
7005         uint16_t ddb_link = -1;
7006         struct qla_ddb_index  *nt_ddb_idx;
7007
7008         fw_ddb_entry = dma_pool_alloc(ha->fw_ddb_dma_pool, GFP_KERNEL,
7009                                       &fw_ddb_dma);
7010         if (fw_ddb_entry == NULL) {
7011                 DEBUG2(ql4_printk(KERN_ERR, ha, "Out of memory\n"));
7012                 goto exit_nt_list;
7013         }
7014         max_ddbs =  is_qla40XX(ha) ? MAX_DEV_DB_ENTRIES_40XX :
7015                                      MAX_DEV_DB_ENTRIES;
7016         fw_idx_size = sizeof(struct qla_ddb_index);
7017
7018         for (idx = 0; idx < max_ddbs; idx = next_idx) {
7019                 ret = qla4xxx_get_fwddb_entry(ha, idx, fw_ddb_entry, fw_ddb_dma,
7020                                               NULL, &next_idx, &state,
7021                                               &conn_err, NULL, &conn_id);
7022                 if (ret == QLA_ERROR)
7023                         break;
7024
7025                 if (qla4xxx_verify_boot_idx(ha, idx) != QLA_SUCCESS)
7026                         goto continue_next_nt;
7027
7028                 /* Check if NT, then add to list it */
7029                 if (strlen((char *) fw_ddb_entry->iscsi_name) == 0)
7030                         goto continue_next_nt;
7031
7032                 ddb_link = le16_to_cpu(fw_ddb_entry->ddb_link);
7033                 if (ddb_link < max_ddbs)
7034                         qla4xxx_update_fw_ddb_link(ha, list_st, fw_ddb_entry);
7035
7036                 if (!(state == DDB_DS_NO_CONNECTION_ACTIVE ||
7037                     state == DDB_DS_SESSION_FAILED) &&
7038                     (is_reset == INIT_ADAPTER))
7039                         goto continue_next_nt;
7040
7041                 DEBUG2(ql4_printk(KERN_INFO, ha,
7042                                   "Adding  DDB to session = 0x%x\n", idx));
7043
7044                 if (is_reset == INIT_ADAPTER) {
7045                         nt_ddb_idx = vmalloc(fw_idx_size);
7046                         if (!nt_ddb_idx)
7047                                 break;
7048
7049                         nt_ddb_idx->fw_ddb_idx = idx;
7050
7051                         /* Copy original isid as it may get updated in function
7052                          * qla4xxx_update_isid(). We need original isid in
7053                          * function qla4xxx_compare_tuple_ddb to find duplicate
7054                          * target */
7055                         memcpy(&nt_ddb_idx->flash_isid[0],
7056                                &fw_ddb_entry->isid[0],
7057                                sizeof(nt_ddb_idx->flash_isid));
7058
7059                         ret = qla4xxx_is_flash_ddb_exists(ha, list_nt,
7060                                                           fw_ddb_entry);
7061                         if (ret == QLA_SUCCESS) {
7062                                 /* free nt_ddb_idx and do not add to list_nt */
7063                                 vfree(nt_ddb_idx);
7064                                 goto continue_next_nt;
7065                         }
7066
7067                         /* Copy updated isid */
7068                         memcpy(&nt_ddb_idx->fw_ddb, fw_ddb_entry,
7069                                sizeof(struct dev_db_entry));
7070
7071                         list_add_tail(&nt_ddb_idx->list, list_nt);
7072                 } else if (is_reset == RESET_ADAPTER) {
7073                         ret = qla4xxx_is_session_exists(ha, fw_ddb_entry,
7074                                                         &ddb_idx);
7075                         if (ret == QLA_SUCCESS) {
7076                                 ddb_entry = qla4xxx_lookup_ddb_by_fw_index(ha,
7077                                                                        ddb_idx);
7078                                 if (ddb_entry != NULL)
7079                                         qla4xxx_update_sess_disc_idx(ha,
7080                                                                      ddb_entry,
7081                                                                   fw_ddb_entry);
7082                                 goto continue_next_nt;
7083                         }
7084                 }
7085
7086                 ret = qla4xxx_sess_conn_setup(ha, fw_ddb_entry, is_reset, idx);
7087                 if (ret == QLA_ERROR)
7088                         goto exit_nt_list;
7089
7090 continue_next_nt:
7091                 if (next_idx == 0)
7092                         break;
7093         }
7094
7095 exit_nt_list:
7096         if (fw_ddb_entry)
7097                 dma_pool_free(ha->fw_ddb_dma_pool, fw_ddb_entry, fw_ddb_dma);
7098 }
7099
7100 static void qla4xxx_build_new_nt_list(struct scsi_qla_host *ha,
7101                                       struct list_head *list_nt,
7102                                       uint16_t target_id)
7103 {
7104         struct dev_db_entry *fw_ddb_entry;
7105         dma_addr_t fw_ddb_dma;
7106         int max_ddbs;
7107         int fw_idx_size;
7108         int ret;
7109         uint32_t idx = 0, next_idx = 0;
7110         uint32_t state = 0, conn_err = 0;
7111         uint16_t conn_id = 0;
7112         struct qla_ddb_index  *nt_ddb_idx;
7113
7114         fw_ddb_entry = dma_pool_alloc(ha->fw_ddb_dma_pool, GFP_KERNEL,
7115                                       &fw_ddb_dma);
7116         if (fw_ddb_entry == NULL) {
7117                 DEBUG2(ql4_printk(KERN_ERR, ha, "Out of memory\n"));
7118                 goto exit_new_nt_list;
7119         }
7120         max_ddbs =  is_qla40XX(ha) ? MAX_DEV_DB_ENTRIES_40XX :
7121                                      MAX_DEV_DB_ENTRIES;
7122         fw_idx_size = sizeof(struct qla_ddb_index);
7123
7124         for (idx = 0; idx < max_ddbs; idx = next_idx) {
7125                 ret = qla4xxx_get_fwddb_entry(ha, idx, fw_ddb_entry, fw_ddb_dma,
7126                                               NULL, &next_idx, &state,
7127                                               &conn_err, NULL, &conn_id);
7128                 if (ret == QLA_ERROR)
7129                         break;
7130
7131                 /* Check if NT, then add it to list */
7132                 if (strlen((char *)fw_ddb_entry->iscsi_name) == 0)
7133                         goto continue_next_new_nt;
7134
7135                 if (!(state == DDB_DS_NO_CONNECTION_ACTIVE))
7136                         goto continue_next_new_nt;
7137
7138                 DEBUG2(ql4_printk(KERN_INFO, ha,
7139                                   "Adding  DDB to session = 0x%x\n", idx));
7140
7141                 nt_ddb_idx = vmalloc(fw_idx_size);
7142                 if (!nt_ddb_idx)
7143                         break;
7144
7145                 nt_ddb_idx->fw_ddb_idx = idx;
7146
7147                 ret = qla4xxx_is_session_exists(ha, fw_ddb_entry, NULL);
7148                 if (ret == QLA_SUCCESS) {
7149                         /* free nt_ddb_idx and do not add to list_nt */
7150                         vfree(nt_ddb_idx);
7151                         goto continue_next_new_nt;
7152                 }
7153
7154                 if (target_id < max_ddbs)
7155                         fw_ddb_entry->ddb_link = cpu_to_le16(target_id);
7156
7157                 list_add_tail(&nt_ddb_idx->list, list_nt);
7158
7159                 ret = qla4xxx_sess_conn_setup(ha, fw_ddb_entry, RESET_ADAPTER,
7160                                               idx);
7161                 if (ret == QLA_ERROR)
7162                         goto exit_new_nt_list;
7163
7164 continue_next_new_nt:
7165                 if (next_idx == 0)
7166                         break;
7167         }
7168
7169 exit_new_nt_list:
7170         if (fw_ddb_entry)
7171                 dma_pool_free(ha->fw_ddb_dma_pool, fw_ddb_entry, fw_ddb_dma);
7172 }
7173
7174 /**
7175  * qla4xxx_sysfs_ddb_is_non_persistent - check for non-persistence of ddb entry
7176  * @dev: dev associated with the sysfs entry
7177  * @data: pointer to flashnode session object
7178  *
7179  * Returns:
7180  *      1: if flashnode entry is non-persistent
7181  *      0: if flashnode entry is persistent
7182  **/
7183 static int qla4xxx_sysfs_ddb_is_non_persistent(struct device *dev, void *data)
7184 {
7185         struct iscsi_bus_flash_session *fnode_sess;
7186
7187         if (!iscsi_flashnode_bus_match(dev, NULL))
7188                 return 0;
7189
7190         fnode_sess = iscsi_dev_to_flash_session(dev);
7191
7192         return (fnode_sess->flash_state == DEV_DB_NON_PERSISTENT);
7193 }
7194
7195 /**
7196  * qla4xxx_sysfs_ddb_tgt_create - Create sysfs entry for target
7197  * @ha: pointer to host
7198  * @fw_ddb_entry: flash ddb data
7199  * @idx: target index
7200  * @user: if set then this call is made from userland else from kernel
7201  *
7202  * Returns:
7203  * On sucess: QLA_SUCCESS
7204  * On failure: QLA_ERROR
7205  *
7206  * This create separate sysfs entries for session and connection attributes of
7207  * the given fw ddb entry.
7208  * If this is invoked as a result of a userspace call then the entry is marked
7209  * as nonpersistent using flash_state field.
7210  **/
7211 static int qla4xxx_sysfs_ddb_tgt_create(struct scsi_qla_host *ha,
7212                                         struct dev_db_entry *fw_ddb_entry,
7213                                         uint16_t *idx, int user)
7214 {
7215         struct iscsi_bus_flash_session *fnode_sess = NULL;
7216         struct iscsi_bus_flash_conn *fnode_conn = NULL;
7217         int rc = QLA_ERROR;
7218
7219         fnode_sess = iscsi_create_flashnode_sess(ha->host, *idx,
7220                                                  &qla4xxx_iscsi_transport, 0);
7221         if (!fnode_sess) {
7222                 ql4_printk(KERN_ERR, ha,
7223                            "%s: Unable to create session sysfs entry for flashnode %d of host%lu\n",
7224                            __func__, *idx, ha->host_no);
7225                 goto exit_tgt_create;
7226         }
7227
7228         fnode_conn = iscsi_create_flashnode_conn(ha->host, fnode_sess,
7229                                                  &qla4xxx_iscsi_transport, 0);
7230         if (!fnode_conn) {
7231                 ql4_printk(KERN_ERR, ha,
7232                            "%s: Unable to create conn sysfs entry for flashnode %d of host%lu\n",
7233                            __func__, *idx, ha->host_no);
7234                 goto free_sess;
7235         }
7236
7237         if (user) {
7238                 fnode_sess->flash_state = DEV_DB_NON_PERSISTENT;
7239         } else {
7240                 fnode_sess->flash_state = DEV_DB_PERSISTENT;
7241
7242                 if (*idx == ha->pri_ddb_idx || *idx == ha->sec_ddb_idx)
7243                         fnode_sess->is_boot_target = 1;
7244                 else
7245                         fnode_sess->is_boot_target = 0;
7246         }
7247
7248         rc = qla4xxx_copy_from_fwddb_param(fnode_sess, fnode_conn,
7249                                            fw_ddb_entry);
7250         if (rc)
7251                 goto free_sess;
7252
7253         ql4_printk(KERN_INFO, ha, "%s: sysfs entry %s created\n",
7254                    __func__, fnode_sess->dev.kobj.name);
7255
7256         ql4_printk(KERN_INFO, ha, "%s: sysfs entry %s created\n",
7257                    __func__, fnode_conn->dev.kobj.name);
7258
7259         return QLA_SUCCESS;
7260
7261 free_sess:
7262         iscsi_destroy_flashnode_sess(fnode_sess);
7263
7264 exit_tgt_create:
7265         return QLA_ERROR;
7266 }
7267
7268 /**
7269  * qla4xxx_sysfs_ddb_add - Add new ddb entry in flash
7270  * @shost: pointer to host
7271  * @buf: type of ddb entry (ipv4/ipv6)
7272  * @len: length of buf
7273  *
7274  * This creates new ddb entry in the flash by finding first free index and
7275  * storing default ddb there. And then create sysfs entry for the new ddb entry.
7276  **/
7277 static int qla4xxx_sysfs_ddb_add(struct Scsi_Host *shost, const char *buf,
7278                                  int len)
7279 {
7280         struct scsi_qla_host *ha = to_qla_host(shost);
7281         struct dev_db_entry *fw_ddb_entry = NULL;
7282         dma_addr_t fw_ddb_entry_dma;
7283         struct device *dev;
7284         uint16_t idx = 0;
7285         uint16_t max_ddbs = 0;
7286         uint32_t options = 0;
7287         uint32_t rval = QLA_ERROR;
7288
7289         if (strncasecmp(PORTAL_TYPE_IPV4, buf, 4) &&
7290             strncasecmp(PORTAL_TYPE_IPV6, buf, 4)) {
7291                 DEBUG2(ql4_printk(KERN_ERR, ha, "%s: Invalid portal type\n",
7292                                   __func__));
7293                 goto exit_ddb_add;
7294         }
7295
7296         max_ddbs =  is_qla40XX(ha) ? MAX_PRST_DEV_DB_ENTRIES :
7297                                      MAX_DEV_DB_ENTRIES;
7298
7299         fw_ddb_entry = dma_alloc_coherent(&ha->pdev->dev, sizeof(*fw_ddb_entry),
7300                                           &fw_ddb_entry_dma, GFP_KERNEL);
7301         if (!fw_ddb_entry) {
7302                 DEBUG2(ql4_printk(KERN_ERR, ha,
7303                                   "%s: Unable to allocate dma buffer\n",
7304                                   __func__));
7305                 goto exit_ddb_add;
7306         }
7307
7308         dev = iscsi_find_flashnode_sess(ha->host, NULL,
7309                                         qla4xxx_sysfs_ddb_is_non_persistent);
7310         if (dev) {
7311                 ql4_printk(KERN_ERR, ha,
7312                            "%s: A non-persistent entry %s found\n",
7313                            __func__, dev->kobj.name);
7314                 put_device(dev);
7315                 goto exit_ddb_add;
7316         }
7317
7318         /* Index 0 and 1 are reserved for boot target entries */
7319         for (idx = 2; idx < max_ddbs; idx++) {
7320                 if (qla4xxx_flashdb_by_index(ha, fw_ddb_entry,
7321                                              fw_ddb_entry_dma, idx))
7322                         break;
7323         }
7324
7325         if (idx == max_ddbs)
7326                 goto exit_ddb_add;
7327
7328         if (!strncasecmp("ipv6", buf, 4))
7329                 options |= IPV6_DEFAULT_DDB_ENTRY;
7330
7331         rval = qla4xxx_get_default_ddb(ha, options, fw_ddb_entry_dma);
7332         if (rval == QLA_ERROR)
7333                 goto exit_ddb_add;
7334
7335         rval = qla4xxx_sysfs_ddb_tgt_create(ha, fw_ddb_entry, &idx, 1);
7336
7337 exit_ddb_add:
7338         if (fw_ddb_entry)
7339                 dma_free_coherent(&ha->pdev->dev, sizeof(*fw_ddb_entry),
7340                                   fw_ddb_entry, fw_ddb_entry_dma);
7341         if (rval == QLA_SUCCESS)
7342                 return idx;
7343         else
7344                 return -EIO;
7345 }
7346
7347 /**
7348  * qla4xxx_sysfs_ddb_apply - write the target ddb contents to Flash
7349  * @fnode_sess: pointer to session attrs of flash ddb entry
7350  * @fnode_conn: pointer to connection attrs of flash ddb entry
7351  *
7352  * This writes the contents of target ddb buffer to Flash with a valid cookie
7353  * value in order to make the ddb entry persistent.
7354  **/
7355 static int  qla4xxx_sysfs_ddb_apply(struct iscsi_bus_flash_session *fnode_sess,
7356                                     struct iscsi_bus_flash_conn *fnode_conn)
7357 {
7358         struct Scsi_Host *shost = iscsi_flash_session_to_shost(fnode_sess);
7359         struct scsi_qla_host *ha = to_qla_host(shost);
7360         uint32_t dev_db_start_offset = FLASH_OFFSET_DB_INFO;
7361         struct dev_db_entry *fw_ddb_entry = NULL;
7362         dma_addr_t fw_ddb_entry_dma;
7363         uint32_t options = 0;
7364         int rval = 0;
7365
7366         fw_ddb_entry = dma_alloc_coherent(&ha->pdev->dev, sizeof(*fw_ddb_entry),
7367                                           &fw_ddb_entry_dma, GFP_KERNEL);
7368         if (!fw_ddb_entry) {
7369                 DEBUG2(ql4_printk(KERN_ERR, ha,
7370                                   "%s: Unable to allocate dma buffer\n",
7371                                   __func__));
7372                 rval = -ENOMEM;
7373                 goto exit_ddb_apply;
7374         }
7375
7376         if (!strncasecmp(fnode_sess->portal_type, PORTAL_TYPE_IPV6, 4))
7377                 options |= IPV6_DEFAULT_DDB_ENTRY;
7378
7379         rval = qla4xxx_get_default_ddb(ha, options, fw_ddb_entry_dma);
7380         if (rval == QLA_ERROR)
7381                 goto exit_ddb_apply;
7382
7383         dev_db_start_offset += (fnode_sess->target_id *
7384                                 sizeof(*fw_ddb_entry));
7385
7386         qla4xxx_copy_to_fwddb_param(fnode_sess, fnode_conn, fw_ddb_entry);
7387         fw_ddb_entry->cookie = DDB_VALID_COOKIE;
7388
7389         rval = qla4xxx_set_flash(ha, fw_ddb_entry_dma, dev_db_start_offset,
7390                                  sizeof(*fw_ddb_entry), FLASH_OPT_RMW_COMMIT);
7391
7392         if (rval == QLA_SUCCESS) {
7393                 fnode_sess->flash_state = DEV_DB_PERSISTENT;
7394                 ql4_printk(KERN_INFO, ha,
7395                            "%s: flash node %u of host %lu written to flash\n",
7396                            __func__, fnode_sess->target_id, ha->host_no);
7397         } else {
7398                 rval = -EIO;
7399                 ql4_printk(KERN_ERR, ha,
7400                            "%s: Error while writing flash node %u of host %lu to flash\n",
7401                            __func__, fnode_sess->target_id, ha->host_no);
7402         }
7403
7404 exit_ddb_apply:
7405         if (fw_ddb_entry)
7406                 dma_free_coherent(&ha->pdev->dev, sizeof(*fw_ddb_entry),
7407                                   fw_ddb_entry, fw_ddb_entry_dma);
7408         return rval;
7409 }
7410
7411 static ssize_t qla4xxx_sysfs_ddb_conn_open(struct scsi_qla_host *ha,
7412                                            struct dev_db_entry *fw_ddb_entry,
7413                                            uint16_t idx)
7414 {
7415         struct dev_db_entry *ddb_entry = NULL;
7416         dma_addr_t ddb_entry_dma;
7417         unsigned long wtime;
7418         uint32_t mbx_sts = 0;
7419         uint32_t state = 0, conn_err = 0;
7420         uint16_t tmo = 0;
7421         int ret = 0;
7422
7423         ddb_entry = dma_alloc_coherent(&ha->pdev->dev, sizeof(*ddb_entry),
7424                                        &ddb_entry_dma, GFP_KERNEL);
7425         if (!ddb_entry) {
7426                 DEBUG2(ql4_printk(KERN_ERR, ha,
7427                                   "%s: Unable to allocate dma buffer\n",
7428                                   __func__));
7429                 return QLA_ERROR;
7430         }
7431
7432         memcpy(ddb_entry, fw_ddb_entry, sizeof(*ddb_entry));
7433
7434         ret = qla4xxx_set_ddb_entry(ha, idx, ddb_entry_dma, &mbx_sts);
7435         if (ret != QLA_SUCCESS) {
7436                 DEBUG2(ql4_printk(KERN_ERR, ha,
7437                                   "%s: Unable to set ddb entry for index %d\n",
7438                                   __func__, idx));
7439                 goto exit_ddb_conn_open;
7440         }
7441
7442         qla4xxx_conn_open(ha, idx);
7443
7444         /* To ensure that sendtargets is done, wait for at least 12 secs */
7445         tmo = ((ha->def_timeout > LOGIN_TOV) &&
7446                (ha->def_timeout < LOGIN_TOV * 10) ?
7447                ha->def_timeout : LOGIN_TOV);
7448
7449         DEBUG2(ql4_printk(KERN_INFO, ha,
7450                           "Default time to wait for login to ddb %d\n", tmo));
7451
7452         wtime = jiffies + (HZ * tmo);
7453         do {
7454                 ret = qla4xxx_get_fwddb_entry(ha, idx, NULL, 0, NULL,
7455                                               NULL, &state, &conn_err, NULL,
7456                                               NULL);
7457                 if (ret == QLA_ERROR)
7458                         continue;
7459
7460                 if (state == DDB_DS_NO_CONNECTION_ACTIVE ||
7461                     state == DDB_DS_SESSION_FAILED)
7462                         break;
7463
7464                 schedule_timeout_uninterruptible(HZ / 10);
7465         } while (time_after(wtime, jiffies));
7466
7467 exit_ddb_conn_open:
7468         if (ddb_entry)
7469                 dma_free_coherent(&ha->pdev->dev, sizeof(*ddb_entry),
7470                                   ddb_entry, ddb_entry_dma);
7471         return ret;
7472 }
7473
7474 static int qla4xxx_ddb_login_st(struct scsi_qla_host *ha,
7475                                 struct dev_db_entry *fw_ddb_entry,
7476                                 uint16_t target_id)
7477 {
7478         struct qla_ddb_index *ddb_idx, *ddb_idx_tmp;
7479         struct list_head list_nt;
7480         uint16_t ddb_index;
7481         int ret = 0;
7482
7483         if (test_bit(AF_ST_DISCOVERY_IN_PROGRESS, &ha->flags)) {
7484                 ql4_printk(KERN_WARNING, ha,
7485                            "%s: A discovery already in progress!\n", __func__);
7486                 return QLA_ERROR;
7487         }
7488
7489         INIT_LIST_HEAD(&list_nt);
7490
7491         set_bit(AF_ST_DISCOVERY_IN_PROGRESS, &ha->flags);
7492
7493         ret = qla4xxx_get_ddb_index(ha, &ddb_index);
7494         if (ret == QLA_ERROR)
7495                 goto exit_login_st_clr_bit;
7496
7497         ret = qla4xxx_sysfs_ddb_conn_open(ha, fw_ddb_entry, ddb_index);
7498         if (ret == QLA_ERROR)
7499                 goto exit_login_st;
7500
7501         qla4xxx_build_new_nt_list(ha, &list_nt, target_id);
7502
7503         list_for_each_entry_safe(ddb_idx, ddb_idx_tmp, &list_nt, list) {
7504                 list_del_init(&ddb_idx->list);
7505                 qla4xxx_clear_ddb_entry(ha, ddb_idx->fw_ddb_idx);
7506                 vfree(ddb_idx);
7507         }
7508
7509 exit_login_st:
7510         if (qla4xxx_clear_ddb_entry(ha, ddb_index) == QLA_ERROR) {
7511                 ql4_printk(KERN_ERR, ha,
7512                            "Unable to clear DDB index = 0x%x\n", ddb_index);
7513         }
7514
7515         clear_bit(ddb_index, ha->ddb_idx_map);
7516
7517 exit_login_st_clr_bit:
7518         clear_bit(AF_ST_DISCOVERY_IN_PROGRESS, &ha->flags);
7519         return ret;
7520 }
7521
7522 static int qla4xxx_ddb_login_nt(struct scsi_qla_host *ha,
7523                                 struct dev_db_entry *fw_ddb_entry,
7524                                 uint16_t idx)
7525 {
7526         int ret = QLA_ERROR;
7527
7528         ret = qla4xxx_is_session_exists(ha, fw_ddb_entry, NULL);
7529         if (ret != QLA_SUCCESS)
7530                 ret = qla4xxx_sess_conn_setup(ha, fw_ddb_entry, RESET_ADAPTER,
7531                                               idx);
7532         else
7533                 ret = -EPERM;
7534
7535         return ret;
7536 }
7537
7538 /**
7539  * qla4xxx_sysfs_ddb_login - Login to the specified target
7540  * @fnode_sess: pointer to session attrs of flash ddb entry
7541  * @fnode_conn: pointer to connection attrs of flash ddb entry
7542  *
7543  * This logs in to the specified target
7544  **/
7545 static int qla4xxx_sysfs_ddb_login(struct iscsi_bus_flash_session *fnode_sess,
7546                                    struct iscsi_bus_flash_conn *fnode_conn)
7547 {
7548         struct Scsi_Host *shost = iscsi_flash_session_to_shost(fnode_sess);
7549         struct scsi_qla_host *ha = to_qla_host(shost);
7550         struct dev_db_entry *fw_ddb_entry = NULL;
7551         dma_addr_t fw_ddb_entry_dma;
7552         uint32_t options = 0;
7553         int ret = 0;
7554
7555         if (fnode_sess->flash_state == DEV_DB_NON_PERSISTENT) {
7556                 ql4_printk(KERN_ERR, ha,
7557                            "%s: Target info is not persistent\n", __func__);
7558                 ret = -EIO;
7559                 goto exit_ddb_login;
7560         }
7561
7562         fw_ddb_entry = dma_alloc_coherent(&ha->pdev->dev, sizeof(*fw_ddb_entry),
7563                                           &fw_ddb_entry_dma, GFP_KERNEL);
7564         if (!fw_ddb_entry) {
7565                 DEBUG2(ql4_printk(KERN_ERR, ha,
7566                                   "%s: Unable to allocate dma buffer\n",
7567                                   __func__));
7568                 ret = -ENOMEM;
7569                 goto exit_ddb_login;
7570         }
7571
7572         if (!strncasecmp(fnode_sess->portal_type, PORTAL_TYPE_IPV6, 4))
7573                 options |= IPV6_DEFAULT_DDB_ENTRY;
7574
7575         ret = qla4xxx_get_default_ddb(ha, options, fw_ddb_entry_dma);
7576         if (ret == QLA_ERROR)
7577                 goto exit_ddb_login;
7578
7579         qla4xxx_copy_to_fwddb_param(fnode_sess, fnode_conn, fw_ddb_entry);
7580         fw_ddb_entry->cookie = DDB_VALID_COOKIE;
7581
7582         if (strlen((char *)fw_ddb_entry->iscsi_name) == 0)
7583                 ret = qla4xxx_ddb_login_st(ha, fw_ddb_entry,
7584                                            fnode_sess->target_id);
7585         else
7586                 ret = qla4xxx_ddb_login_nt(ha, fw_ddb_entry,
7587                                            fnode_sess->target_id);
7588
7589         if (ret > 0)
7590                 ret = -EIO;
7591
7592 exit_ddb_login:
7593         if (fw_ddb_entry)
7594                 dma_free_coherent(&ha->pdev->dev, sizeof(*fw_ddb_entry),
7595                                   fw_ddb_entry, fw_ddb_entry_dma);
7596         return ret;
7597 }
7598
7599 /**
7600  * qla4xxx_sysfs_ddb_logout_sid - Logout session for the specified target
7601  * @cls_sess: pointer to session to be logged out
7602  *
7603  * This performs session log out from the specified target
7604  **/
7605 static int qla4xxx_sysfs_ddb_logout_sid(struct iscsi_cls_session *cls_sess)
7606 {
7607         struct iscsi_session *sess;
7608         struct ddb_entry *ddb_entry = NULL;
7609         struct scsi_qla_host *ha;
7610         struct dev_db_entry *fw_ddb_entry = NULL;
7611         dma_addr_t fw_ddb_entry_dma;
7612         unsigned long flags;
7613         unsigned long wtime;
7614         uint32_t ddb_state;
7615         int options;
7616         int ret = 0;
7617
7618         sess = cls_sess->dd_data;
7619         ddb_entry = sess->dd_data;
7620         ha = ddb_entry->ha;
7621
7622         if (ddb_entry->ddb_type != FLASH_DDB) {
7623                 ql4_printk(KERN_ERR, ha, "%s: Not a flash node session\n",
7624                            __func__);
7625                 ret = -ENXIO;
7626                 goto exit_ddb_logout;
7627         }
7628
7629         if (test_bit(DF_BOOT_TGT, &ddb_entry->flags)) {
7630                 ql4_printk(KERN_ERR, ha,
7631                            "%s: Logout from boot target entry is not permitted.\n",
7632                            __func__);
7633                 ret = -EPERM;
7634                 goto exit_ddb_logout;
7635         }
7636
7637         fw_ddb_entry = dma_alloc_coherent(&ha->pdev->dev, sizeof(*fw_ddb_entry),
7638                                           &fw_ddb_entry_dma, GFP_KERNEL);
7639         if (!fw_ddb_entry) {
7640                 ql4_printk(KERN_ERR, ha,
7641                            "%s: Unable to allocate dma buffer\n", __func__);
7642                 ret = -ENOMEM;
7643                 goto exit_ddb_logout;
7644         }
7645
7646         if (test_and_set_bit(DF_DISABLE_RELOGIN, &ddb_entry->flags))
7647                 goto ddb_logout_init;
7648
7649         ret = qla4xxx_get_fwddb_entry(ha, ddb_entry->fw_ddb_index,
7650                                       fw_ddb_entry, fw_ddb_entry_dma,
7651                                       NULL, NULL, &ddb_state, NULL,
7652                                       NULL, NULL);
7653         if (ret == QLA_ERROR)
7654                 goto ddb_logout_init;
7655
7656         if (ddb_state == DDB_DS_SESSION_ACTIVE)
7657                 goto ddb_logout_init;
7658
7659         /* wait until next relogin is triggered using DF_RELOGIN and
7660          * clear DF_RELOGIN to avoid invocation of further relogin
7661          */
7662         wtime = jiffies + (HZ * RELOGIN_TOV);
7663         do {
7664                 if (test_and_clear_bit(DF_RELOGIN, &ddb_entry->flags))
7665                         goto ddb_logout_init;
7666
7667                 schedule_timeout_uninterruptible(HZ);
7668         } while ((time_after(wtime, jiffies)));
7669
7670 ddb_logout_init:
7671         atomic_set(&ddb_entry->retry_relogin_timer, INVALID_ENTRY);
7672         atomic_set(&ddb_entry->relogin_timer, 0);
7673
7674         options = LOGOUT_OPTION_CLOSE_SESSION;
7675         qla4xxx_session_logout_ddb(ha, ddb_entry, options);
7676
7677         memset(fw_ddb_entry, 0, sizeof(*fw_ddb_entry));
7678         wtime = jiffies + (HZ * LOGOUT_TOV);
7679         do {
7680                 ret = qla4xxx_get_fwddb_entry(ha, ddb_entry->fw_ddb_index,
7681                                               fw_ddb_entry, fw_ddb_entry_dma,
7682                                               NULL, NULL, &ddb_state, NULL,
7683                                               NULL, NULL);
7684                 if (ret == QLA_ERROR)
7685                         goto ddb_logout_clr_sess;
7686
7687                 if ((ddb_state == DDB_DS_NO_CONNECTION_ACTIVE) ||
7688                     (ddb_state == DDB_DS_SESSION_FAILED))
7689                         goto ddb_logout_clr_sess;
7690
7691                 schedule_timeout_uninterruptible(HZ);
7692         } while ((time_after(wtime, jiffies)));
7693
7694 ddb_logout_clr_sess:
7695         qla4xxx_clear_ddb_entry(ha, ddb_entry->fw_ddb_index);
7696         /*
7697          * we have decremented the reference count of the driver
7698          * when we setup the session to have the driver unload
7699          * to be seamless without actually destroying the
7700          * session
7701          **/
7702         try_module_get(qla4xxx_iscsi_transport.owner);
7703         iscsi_destroy_endpoint(ddb_entry->conn->ep);
7704
7705         spin_lock_irqsave(&ha->hardware_lock, flags);
7706         qla4xxx_free_ddb(ha, ddb_entry);
7707         clear_bit(ddb_entry->fw_ddb_index, ha->ddb_idx_map);
7708         spin_unlock_irqrestore(&ha->hardware_lock, flags);
7709
7710         iscsi_session_teardown(ddb_entry->sess);
7711
7712         clear_bit(DF_DISABLE_RELOGIN, &ddb_entry->flags);
7713         ret = QLA_SUCCESS;
7714
7715 exit_ddb_logout:
7716         if (fw_ddb_entry)
7717                 dma_free_coherent(&ha->pdev->dev, sizeof(*fw_ddb_entry),
7718                                   fw_ddb_entry, fw_ddb_entry_dma);
7719         return ret;
7720 }
7721
7722 /**
7723  * qla4xxx_sysfs_ddb_logout - Logout from the specified target
7724  * @fnode_sess: pointer to session attrs of flash ddb entry
7725  * @fnode_conn: pointer to connection attrs of flash ddb entry
7726  *
7727  * This performs log out from the specified target
7728  **/
7729 static int qla4xxx_sysfs_ddb_logout(struct iscsi_bus_flash_session *fnode_sess,
7730                                     struct iscsi_bus_flash_conn *fnode_conn)
7731 {
7732         struct Scsi_Host *shost = iscsi_flash_session_to_shost(fnode_sess);
7733         struct scsi_qla_host *ha = to_qla_host(shost);
7734         struct ql4_tuple_ddb *flash_tddb = NULL;
7735         struct ql4_tuple_ddb *tmp_tddb = NULL;
7736         struct dev_db_entry *fw_ddb_entry = NULL;
7737         struct ddb_entry *ddb_entry = NULL;
7738         dma_addr_t fw_ddb_dma;
7739         uint32_t next_idx = 0;
7740         uint32_t state = 0, conn_err = 0;
7741         uint16_t conn_id = 0;
7742         int idx, index;
7743         int status, ret = 0;
7744
7745         fw_ddb_entry = dma_pool_alloc(ha->fw_ddb_dma_pool, GFP_KERNEL,
7746                                       &fw_ddb_dma);
7747         if (fw_ddb_entry == NULL) {
7748                 ql4_printk(KERN_ERR, ha, "%s:Out of memory\n", __func__);
7749                 ret = -ENOMEM;
7750                 goto exit_ddb_logout;
7751         }
7752
7753         flash_tddb = vzalloc(sizeof(*flash_tddb));
7754         if (!flash_tddb) {
7755                 ql4_printk(KERN_WARNING, ha,
7756                            "%s:Memory Allocation failed.\n", __func__);
7757                 ret = -ENOMEM;
7758                 goto exit_ddb_logout;
7759         }
7760
7761         tmp_tddb = vzalloc(sizeof(*tmp_tddb));
7762         if (!tmp_tddb) {
7763                 ql4_printk(KERN_WARNING, ha,
7764                            "%s:Memory Allocation failed.\n", __func__);
7765                 ret = -ENOMEM;
7766                 goto exit_ddb_logout;
7767         }
7768
7769         if (!fnode_sess->targetname) {
7770                 ql4_printk(KERN_ERR, ha,
7771                            "%s:Cannot logout from SendTarget entry\n",
7772                            __func__);
7773                 ret = -EPERM;
7774                 goto exit_ddb_logout;
7775         }
7776
7777         if (fnode_sess->is_boot_target) {
7778                 ql4_printk(KERN_ERR, ha,
7779                            "%s: Logout from boot target entry is not permitted.\n",
7780                            __func__);
7781                 ret = -EPERM;
7782                 goto exit_ddb_logout;
7783         }
7784
7785         strlcpy(flash_tddb->iscsi_name, fnode_sess->targetname,
7786                 ISCSI_NAME_SIZE);
7787
7788         if (!strncmp(fnode_sess->portal_type, PORTAL_TYPE_IPV6, 4))
7789                 sprintf(flash_tddb->ip_addr, "%pI6", fnode_conn->ipaddress);
7790         else
7791                 sprintf(flash_tddb->ip_addr, "%pI4", fnode_conn->ipaddress);
7792
7793         flash_tddb->tpgt = fnode_sess->tpgt;
7794         flash_tddb->port = fnode_conn->port;
7795
7796         COPY_ISID(flash_tddb->isid, fnode_sess->isid);
7797
7798         for (idx = 0; idx < MAX_DDB_ENTRIES; idx++) {
7799                 ddb_entry = qla4xxx_lookup_ddb_by_fw_index(ha, idx);
7800                 if (ddb_entry == NULL)
7801                         continue;
7802
7803                 if (ddb_entry->ddb_type != FLASH_DDB)
7804                         continue;
7805
7806                 index = ddb_entry->sess->target_id;
7807                 status = qla4xxx_get_fwddb_entry(ha, index, fw_ddb_entry,
7808                                                  fw_ddb_dma, NULL, &next_idx,
7809                                                  &state, &conn_err, NULL,
7810                                                  &conn_id);
7811                 if (status == QLA_ERROR) {
7812                         ret = -ENOMEM;
7813                         break;
7814                 }
7815
7816                 qla4xxx_convert_param_ddb(fw_ddb_entry, tmp_tddb, NULL);
7817
7818                 status = qla4xxx_compare_tuple_ddb(ha, flash_tddb, tmp_tddb,
7819                                                    true);
7820                 if (status == QLA_SUCCESS) {
7821                         ret = qla4xxx_sysfs_ddb_logout_sid(ddb_entry->sess);
7822                         break;
7823                 }
7824         }
7825
7826         if (idx == MAX_DDB_ENTRIES)
7827                 ret = -ESRCH;
7828
7829 exit_ddb_logout:
7830         vfree(flash_tddb);
7831         vfree(tmp_tddb);
7832         if (fw_ddb_entry)
7833                 dma_pool_free(ha->fw_ddb_dma_pool, fw_ddb_entry, fw_ddb_dma);
7834
7835         return ret;
7836 }
7837
7838 static int
7839 qla4xxx_sysfs_ddb_get_param(struct iscsi_bus_flash_session *fnode_sess,
7840                             int param, char *buf)
7841 {
7842         struct Scsi_Host *shost = iscsi_flash_session_to_shost(fnode_sess);
7843         struct scsi_qla_host *ha = to_qla_host(shost);
7844         struct iscsi_bus_flash_conn *fnode_conn;
7845         struct ql4_chap_table chap_tbl;
7846         struct device *dev;
7847         int parent_type;
7848         int rc = 0;
7849
7850         dev = iscsi_find_flashnode_conn(fnode_sess);
7851         if (!dev)
7852                 return -EIO;
7853
7854         fnode_conn = iscsi_dev_to_flash_conn(dev);
7855
7856         switch (param) {
7857         case ISCSI_FLASHNODE_IS_FW_ASSIGNED_IPV6:
7858                 rc = sprintf(buf, "%u\n", fnode_conn->is_fw_assigned_ipv6);
7859                 break;
7860         case ISCSI_FLASHNODE_PORTAL_TYPE:
7861                 rc = sprintf(buf, "%s\n", fnode_sess->portal_type);
7862                 break;
7863         case ISCSI_FLASHNODE_AUTO_SND_TGT_DISABLE:
7864                 rc = sprintf(buf, "%u\n", fnode_sess->auto_snd_tgt_disable);
7865                 break;
7866         case ISCSI_FLASHNODE_DISCOVERY_SESS:
7867                 rc = sprintf(buf, "%u\n", fnode_sess->discovery_sess);
7868                 break;
7869         case ISCSI_FLASHNODE_ENTRY_EN:
7870                 rc = sprintf(buf, "%u\n", fnode_sess->entry_state);
7871                 break;
7872         case ISCSI_FLASHNODE_HDR_DGST_EN:
7873                 rc = sprintf(buf, "%u\n", fnode_conn->hdrdgst_en);
7874                 break;
7875         case ISCSI_FLASHNODE_DATA_DGST_EN:
7876                 rc = sprintf(buf, "%u\n", fnode_conn->datadgst_en);
7877                 break;
7878         case ISCSI_FLASHNODE_IMM_DATA_EN:
7879                 rc = sprintf(buf, "%u\n", fnode_sess->imm_data_en);
7880                 break;
7881         case ISCSI_FLASHNODE_INITIAL_R2T_EN:
7882                 rc = sprintf(buf, "%u\n", fnode_sess->initial_r2t_en);
7883                 break;
7884         case ISCSI_FLASHNODE_DATASEQ_INORDER:
7885                 rc = sprintf(buf, "%u\n", fnode_sess->dataseq_inorder_en);
7886                 break;
7887         case ISCSI_FLASHNODE_PDU_INORDER:
7888                 rc = sprintf(buf, "%u\n", fnode_sess->pdu_inorder_en);
7889                 break;
7890         case ISCSI_FLASHNODE_CHAP_AUTH_EN:
7891                 rc = sprintf(buf, "%u\n", fnode_sess->chap_auth_en);
7892                 break;
7893         case ISCSI_FLASHNODE_SNACK_REQ_EN:
7894                 rc = sprintf(buf, "%u\n", fnode_conn->snack_req_en);
7895                 break;
7896         case ISCSI_FLASHNODE_DISCOVERY_LOGOUT_EN:
7897                 rc = sprintf(buf, "%u\n", fnode_sess->discovery_logout_en);
7898                 break;
7899         case ISCSI_FLASHNODE_BIDI_CHAP_EN:
7900                 rc = sprintf(buf, "%u\n", fnode_sess->bidi_chap_en);
7901                 break;
7902         case ISCSI_FLASHNODE_DISCOVERY_AUTH_OPTIONAL:
7903                 rc = sprintf(buf, "%u\n", fnode_sess->discovery_auth_optional);
7904                 break;
7905         case ISCSI_FLASHNODE_ERL:
7906                 rc = sprintf(buf, "%u\n", fnode_sess->erl);
7907                 break;
7908         case ISCSI_FLASHNODE_TCP_TIMESTAMP_STAT:
7909                 rc = sprintf(buf, "%u\n", fnode_conn->tcp_timestamp_stat);
7910                 break;
7911         case ISCSI_FLASHNODE_TCP_NAGLE_DISABLE:
7912                 rc = sprintf(buf, "%u\n", fnode_conn->tcp_nagle_disable);
7913                 break;
7914         case ISCSI_FLASHNODE_TCP_WSF_DISABLE:
7915                 rc = sprintf(buf, "%u\n", fnode_conn->tcp_wsf_disable);
7916                 break;
7917         case ISCSI_FLASHNODE_TCP_TIMER_SCALE:
7918                 rc = sprintf(buf, "%u\n", fnode_conn->tcp_timer_scale);
7919                 break;
7920         case ISCSI_FLASHNODE_TCP_TIMESTAMP_EN:
7921                 rc = sprintf(buf, "%u\n", fnode_conn->tcp_timestamp_en);
7922                 break;
7923         case ISCSI_FLASHNODE_IP_FRAG_DISABLE:
7924                 rc = sprintf(buf, "%u\n", fnode_conn->fragment_disable);
7925                 break;
7926         case ISCSI_FLASHNODE_MAX_RECV_DLENGTH:
7927                 rc = sprintf(buf, "%u\n", fnode_conn->max_recv_dlength);
7928                 break;
7929         case ISCSI_FLASHNODE_MAX_XMIT_DLENGTH:
7930                 rc = sprintf(buf, "%u\n", fnode_conn->max_xmit_dlength);
7931                 break;
7932         case ISCSI_FLASHNODE_FIRST_BURST:
7933                 rc = sprintf(buf, "%u\n", fnode_sess->first_burst);
7934                 break;
7935         case ISCSI_FLASHNODE_DEF_TIME2WAIT:
7936                 rc = sprintf(buf, "%u\n", fnode_sess->time2wait);
7937                 break;
7938         case ISCSI_FLASHNODE_DEF_TIME2RETAIN:
7939                 rc = sprintf(buf, "%u\n", fnode_sess->time2retain);
7940                 break;
7941         case ISCSI_FLASHNODE_MAX_R2T:
7942                 rc = sprintf(buf, "%u\n", fnode_sess->max_r2t);
7943                 break;
7944         case ISCSI_FLASHNODE_KEEPALIVE_TMO:
7945                 rc = sprintf(buf, "%u\n", fnode_conn->keepalive_timeout);
7946                 break;
7947         case ISCSI_FLASHNODE_ISID:
7948                 rc = sprintf(buf, "%pm\n", fnode_sess->isid);
7949                 break;
7950         case ISCSI_FLASHNODE_TSID:
7951                 rc = sprintf(buf, "%u\n", fnode_sess->tsid);
7952                 break;
7953         case ISCSI_FLASHNODE_PORT:
7954                 rc = sprintf(buf, "%d\n", fnode_conn->port);
7955                 break;
7956         case ISCSI_FLASHNODE_MAX_BURST:
7957                 rc = sprintf(buf, "%u\n", fnode_sess->max_burst);
7958                 break;
7959         case ISCSI_FLASHNODE_DEF_TASKMGMT_TMO:
7960                 rc = sprintf(buf, "%u\n",
7961                              fnode_sess->default_taskmgmt_timeout);
7962                 break;
7963         case ISCSI_FLASHNODE_IPADDR:
7964                 if (!strncmp(fnode_sess->portal_type, PORTAL_TYPE_IPV6, 4))
7965                         rc = sprintf(buf, "%pI6\n", fnode_conn->ipaddress);
7966                 else
7967                         rc = sprintf(buf, "%pI4\n", fnode_conn->ipaddress);
7968                 break;
7969         case ISCSI_FLASHNODE_ALIAS:
7970                 if (fnode_sess->targetalias)
7971                         rc = sprintf(buf, "%s\n", fnode_sess->targetalias);
7972                 else
7973                         rc = sprintf(buf, "\n");
7974                 break;
7975         case ISCSI_FLASHNODE_REDIRECT_IPADDR:
7976                 if (!strncmp(fnode_sess->portal_type, PORTAL_TYPE_IPV6, 4))
7977                         rc = sprintf(buf, "%pI6\n",
7978                                      fnode_conn->redirect_ipaddr);
7979                 else
7980                         rc = sprintf(buf, "%pI4\n",
7981                                      fnode_conn->redirect_ipaddr);
7982                 break;
7983         case ISCSI_FLASHNODE_MAX_SEGMENT_SIZE:
7984                 rc = sprintf(buf, "%u\n", fnode_conn->max_segment_size);
7985                 break;
7986         case ISCSI_FLASHNODE_LOCAL_PORT:
7987                 rc = sprintf(buf, "%u\n", fnode_conn->local_port);
7988                 break;
7989         case ISCSI_FLASHNODE_IPV4_TOS:
7990                 rc = sprintf(buf, "%u\n", fnode_conn->ipv4_tos);
7991                 break;
7992         case ISCSI_FLASHNODE_IPV6_TC:
7993                 if (!strncmp(fnode_sess->portal_type, PORTAL_TYPE_IPV6, 4))
7994                         rc = sprintf(buf, "%u\n",
7995                                      fnode_conn->ipv6_traffic_class);
7996                 else
7997                         rc = sprintf(buf, "\n");
7998                 break;
7999         case ISCSI_FLASHNODE_IPV6_FLOW_LABEL:
8000                 rc = sprintf(buf, "%u\n", fnode_conn->ipv6_flow_label);
8001                 break;
8002         case ISCSI_FLASHNODE_LINK_LOCAL_IPV6:
8003                 if (!strncmp(fnode_sess->portal_type, PORTAL_TYPE_IPV6, 4))
8004                         rc = sprintf(buf, "%pI6\n",
8005                                      fnode_conn->link_local_ipv6_addr);
8006                 else
8007                         rc = sprintf(buf, "\n");
8008                 break;
8009         case ISCSI_FLASHNODE_DISCOVERY_PARENT_IDX:
8010                 rc = sprintf(buf, "%u\n", fnode_sess->discovery_parent_idx);
8011                 break;
8012         case ISCSI_FLASHNODE_DISCOVERY_PARENT_TYPE:
8013                 if (fnode_sess->discovery_parent_type == DDB_ISNS)
8014                         parent_type = ISCSI_DISC_PARENT_ISNS;
8015                 else if (fnode_sess->discovery_parent_type == DDB_NO_LINK)
8016                         parent_type = ISCSI_DISC_PARENT_UNKNOWN;
8017                 else if (fnode_sess->discovery_parent_type < MAX_DDB_ENTRIES)
8018                         parent_type = ISCSI_DISC_PARENT_SENDTGT;
8019                 else
8020                         parent_type = ISCSI_DISC_PARENT_UNKNOWN;
8021
8022                 rc = sprintf(buf, "%s\n",
8023                              iscsi_get_discovery_parent_name(parent_type));
8024                 break;
8025         case ISCSI_FLASHNODE_NAME:
8026                 if (fnode_sess->targetname)
8027                         rc = sprintf(buf, "%s\n", fnode_sess->targetname);
8028                 else
8029                         rc = sprintf(buf, "\n");
8030                 break;
8031         case ISCSI_FLASHNODE_TPGT:
8032                 rc = sprintf(buf, "%u\n", fnode_sess->tpgt);
8033                 break;
8034         case ISCSI_FLASHNODE_TCP_XMIT_WSF:
8035                 rc = sprintf(buf, "%u\n", fnode_conn->tcp_xmit_wsf);
8036                 break;
8037         case ISCSI_FLASHNODE_TCP_RECV_WSF:
8038                 rc = sprintf(buf, "%u\n", fnode_conn->tcp_recv_wsf);
8039                 break;
8040         case ISCSI_FLASHNODE_CHAP_OUT_IDX:
8041                 rc = sprintf(buf, "%u\n", fnode_sess->chap_out_idx);
8042                 break;
8043         case ISCSI_FLASHNODE_USERNAME:
8044                 if (fnode_sess->chap_auth_en) {
8045                         qla4xxx_get_uni_chap_at_index(ha,
8046                                                       chap_tbl.name,
8047                                                       chap_tbl.secret,
8048                                                       fnode_sess->chap_out_idx);
8049                         rc = sprintf(buf, "%s\n", chap_tbl.name);
8050                 } else {
8051                         rc = sprintf(buf, "\n");
8052                 }
8053                 break;
8054         case ISCSI_FLASHNODE_PASSWORD:
8055                 if (fnode_sess->chap_auth_en) {
8056                         qla4xxx_get_uni_chap_at_index(ha,
8057                                                       chap_tbl.name,
8058                                                       chap_tbl.secret,
8059                                                       fnode_sess->chap_out_idx);
8060                         rc = sprintf(buf, "%s\n", chap_tbl.secret);
8061                 } else {
8062                         rc = sprintf(buf, "\n");
8063                 }
8064                 break;
8065         case ISCSI_FLASHNODE_STATSN:
8066                 rc = sprintf(buf, "%u\n", fnode_conn->statsn);
8067                 break;
8068         case ISCSI_FLASHNODE_EXP_STATSN:
8069                 rc = sprintf(buf, "%u\n", fnode_conn->exp_statsn);
8070                 break;
8071         case ISCSI_FLASHNODE_IS_BOOT_TGT:
8072                 rc = sprintf(buf, "%u\n", fnode_sess->is_boot_target);
8073                 break;
8074         default:
8075                 rc = -ENOSYS;
8076                 break;
8077         }
8078
8079         put_device(dev);
8080         return rc;
8081 }
8082
8083 /**
8084  * qla4xxx_sysfs_ddb_set_param - Set parameter for firmware DDB entry
8085  * @fnode_sess: pointer to session attrs of flash ddb entry
8086  * @fnode_conn: pointer to connection attrs of flash ddb entry
8087  * @data: Parameters and their values to update
8088  * @len: len of data
8089  *
8090  * This sets the parameter of flash ddb entry and writes them to flash
8091  **/
8092 static int
8093 qla4xxx_sysfs_ddb_set_param(struct iscsi_bus_flash_session *fnode_sess,
8094                             struct iscsi_bus_flash_conn *fnode_conn,
8095                             void *data, int len)
8096 {
8097         struct Scsi_Host *shost = iscsi_flash_session_to_shost(fnode_sess);
8098         struct scsi_qla_host *ha = to_qla_host(shost);
8099         struct iscsi_flashnode_param_info *fnode_param;
8100         struct ql4_chap_table chap_tbl;
8101         struct nlattr *attr;
8102         uint16_t chap_out_idx = INVALID_ENTRY;
8103         int rc = QLA_ERROR;
8104         uint32_t rem = len;
8105
8106         memset((void *)&chap_tbl, 0, sizeof(chap_tbl));
8107         nla_for_each_attr(attr, data, len, rem) {
8108                 fnode_param = nla_data(attr);
8109
8110                 switch (fnode_param->param) {
8111                 case ISCSI_FLASHNODE_IS_FW_ASSIGNED_IPV6:
8112                         fnode_conn->is_fw_assigned_ipv6 = fnode_param->value[0];
8113                         break;
8114                 case ISCSI_FLASHNODE_PORTAL_TYPE:
8115                         memcpy(fnode_sess->portal_type, fnode_param->value,
8116                                strlen(fnode_sess->portal_type));
8117                         break;
8118                 case ISCSI_FLASHNODE_AUTO_SND_TGT_DISABLE:
8119                         fnode_sess->auto_snd_tgt_disable =
8120                                                         fnode_param->value[0];
8121                         break;
8122                 case ISCSI_FLASHNODE_DISCOVERY_SESS:
8123                         fnode_sess->discovery_sess = fnode_param->value[0];
8124                         break;
8125                 case ISCSI_FLASHNODE_ENTRY_EN:
8126                         fnode_sess->entry_state = fnode_param->value[0];
8127                         break;
8128                 case ISCSI_FLASHNODE_HDR_DGST_EN:
8129                         fnode_conn->hdrdgst_en = fnode_param->value[0];
8130                         break;
8131                 case ISCSI_FLASHNODE_DATA_DGST_EN:
8132                         fnode_conn->datadgst_en = fnode_param->value[0];
8133                         break;
8134                 case ISCSI_FLASHNODE_IMM_DATA_EN:
8135                         fnode_sess->imm_data_en = fnode_param->value[0];
8136                         break;
8137                 case ISCSI_FLASHNODE_INITIAL_R2T_EN:
8138                         fnode_sess->initial_r2t_en = fnode_param->value[0];
8139                         break;
8140                 case ISCSI_FLASHNODE_DATASEQ_INORDER:
8141                         fnode_sess->dataseq_inorder_en = fnode_param->value[0];
8142                         break;
8143                 case ISCSI_FLASHNODE_PDU_INORDER:
8144                         fnode_sess->pdu_inorder_en = fnode_param->value[0];
8145                         break;
8146                 case ISCSI_FLASHNODE_CHAP_AUTH_EN:
8147                         fnode_sess->chap_auth_en = fnode_param->value[0];
8148                         /* Invalidate chap index if chap auth is disabled */
8149                         if (!fnode_sess->chap_auth_en)
8150                                 fnode_sess->chap_out_idx = INVALID_ENTRY;
8151
8152                         break;
8153                 case ISCSI_FLASHNODE_SNACK_REQ_EN:
8154                         fnode_conn->snack_req_en = fnode_param->value[0];
8155                         break;
8156                 case ISCSI_FLASHNODE_DISCOVERY_LOGOUT_EN:
8157                         fnode_sess->discovery_logout_en = fnode_param->value[0];
8158                         break;
8159                 case ISCSI_FLASHNODE_BIDI_CHAP_EN:
8160                         fnode_sess->bidi_chap_en = fnode_param->value[0];
8161                         break;
8162                 case ISCSI_FLASHNODE_DISCOVERY_AUTH_OPTIONAL:
8163                         fnode_sess->discovery_auth_optional =
8164                                                         fnode_param->value[0];
8165                         break;
8166                 case ISCSI_FLASHNODE_ERL:
8167                         fnode_sess->erl = fnode_param->value[0];
8168                         break;
8169                 case ISCSI_FLASHNODE_TCP_TIMESTAMP_STAT:
8170                         fnode_conn->tcp_timestamp_stat = fnode_param->value[0];
8171                         break;
8172                 case ISCSI_FLASHNODE_TCP_NAGLE_DISABLE:
8173                         fnode_conn->tcp_nagle_disable = fnode_param->value[0];
8174                         break;
8175                 case ISCSI_FLASHNODE_TCP_WSF_DISABLE:
8176                         fnode_conn->tcp_wsf_disable = fnode_param->value[0];
8177                         break;
8178                 case ISCSI_FLASHNODE_TCP_TIMER_SCALE:
8179                         fnode_conn->tcp_timer_scale = fnode_param->value[0];
8180                         break;
8181                 case ISCSI_FLASHNODE_TCP_TIMESTAMP_EN:
8182                         fnode_conn->tcp_timestamp_en = fnode_param->value[0];
8183                         break;
8184                 case ISCSI_FLASHNODE_IP_FRAG_DISABLE:
8185                         fnode_conn->fragment_disable = fnode_param->value[0];
8186                         break;
8187                 case ISCSI_FLASHNODE_MAX_RECV_DLENGTH:
8188                         fnode_conn->max_recv_dlength =
8189                                         *(unsigned *)fnode_param->value;
8190                         break;
8191                 case ISCSI_FLASHNODE_MAX_XMIT_DLENGTH:
8192                         fnode_conn->max_xmit_dlength =
8193                                         *(unsigned *)fnode_param->value;
8194                         break;
8195                 case ISCSI_FLASHNODE_FIRST_BURST:
8196                         fnode_sess->first_burst =
8197                                         *(unsigned *)fnode_param->value;
8198                         break;
8199                 case ISCSI_FLASHNODE_DEF_TIME2WAIT:
8200                         fnode_sess->time2wait = *(uint16_t *)fnode_param->value;
8201                         break;
8202                 case ISCSI_FLASHNODE_DEF_TIME2RETAIN:
8203                         fnode_sess->time2retain =
8204                                                 *(uint16_t *)fnode_param->value;
8205                         break;
8206                 case ISCSI_FLASHNODE_MAX_R2T:
8207                         fnode_sess->max_r2t =
8208                                         *(uint16_t *)fnode_param->value;
8209                         break;
8210                 case ISCSI_FLASHNODE_KEEPALIVE_TMO:
8211                         fnode_conn->keepalive_timeout =
8212                                 *(uint16_t *)fnode_param->value;
8213                         break;
8214                 case ISCSI_FLASHNODE_ISID:
8215                         memcpy(fnode_sess->isid, fnode_param->value,
8216                                sizeof(fnode_sess->isid));
8217                         break;
8218                 case ISCSI_FLASHNODE_TSID:
8219                         fnode_sess->tsid = *(uint16_t *)fnode_param->value;
8220                         break;
8221                 case ISCSI_FLASHNODE_PORT:
8222                         fnode_conn->port = *(uint16_t *)fnode_param->value;
8223                         break;
8224                 case ISCSI_FLASHNODE_MAX_BURST:
8225                         fnode_sess->max_burst = *(unsigned *)fnode_param->value;
8226                         break;
8227                 case ISCSI_FLASHNODE_DEF_TASKMGMT_TMO:
8228                         fnode_sess->default_taskmgmt_timeout =
8229                                                 *(uint16_t *)fnode_param->value;
8230                         break;
8231                 case ISCSI_FLASHNODE_IPADDR:
8232                         memcpy(fnode_conn->ipaddress, fnode_param->value,
8233                                IPv6_ADDR_LEN);
8234                         break;
8235                 case ISCSI_FLASHNODE_ALIAS:
8236                         rc = iscsi_switch_str_param(&fnode_sess->targetalias,
8237                                                     (char *)fnode_param->value);
8238                         break;
8239                 case ISCSI_FLASHNODE_REDIRECT_IPADDR:
8240                         memcpy(fnode_conn->redirect_ipaddr, fnode_param->value,
8241                                IPv6_ADDR_LEN);
8242                         break;
8243                 case ISCSI_FLASHNODE_MAX_SEGMENT_SIZE:
8244                         fnode_conn->max_segment_size =
8245                                         *(unsigned *)fnode_param->value;
8246                         break;
8247                 case ISCSI_FLASHNODE_LOCAL_PORT:
8248                         fnode_conn->local_port =
8249                                                 *(uint16_t *)fnode_param->value;
8250                         break;
8251                 case ISCSI_FLASHNODE_IPV4_TOS:
8252                         fnode_conn->ipv4_tos = fnode_param->value[0];
8253                         break;
8254                 case ISCSI_FLASHNODE_IPV6_TC:
8255                         fnode_conn->ipv6_traffic_class = fnode_param->value[0];
8256                         break;
8257                 case ISCSI_FLASHNODE_IPV6_FLOW_LABEL:
8258                         fnode_conn->ipv6_flow_label = fnode_param->value[0];
8259                         break;
8260                 case ISCSI_FLASHNODE_NAME:
8261                         rc = iscsi_switch_str_param(&fnode_sess->targetname,
8262                                                     (char *)fnode_param->value);
8263                         break;
8264                 case ISCSI_FLASHNODE_TPGT:
8265                         fnode_sess->tpgt = *(uint16_t *)fnode_param->value;
8266                         break;
8267                 case ISCSI_FLASHNODE_LINK_LOCAL_IPV6:
8268                         memcpy(fnode_conn->link_local_ipv6_addr,
8269                                fnode_param->value, IPv6_ADDR_LEN);
8270                         break;
8271                 case ISCSI_FLASHNODE_DISCOVERY_PARENT_IDX:
8272                         fnode_sess->discovery_parent_idx =
8273                                                 *(uint16_t *)fnode_param->value;
8274                         break;
8275                 case ISCSI_FLASHNODE_TCP_XMIT_WSF:
8276                         fnode_conn->tcp_xmit_wsf =
8277                                                 *(uint8_t *)fnode_param->value;
8278                         break;
8279                 case ISCSI_FLASHNODE_TCP_RECV_WSF:
8280                         fnode_conn->tcp_recv_wsf =
8281                                                 *(uint8_t *)fnode_param->value;
8282                         break;
8283                 case ISCSI_FLASHNODE_STATSN:
8284                         fnode_conn->statsn = *(uint32_t *)fnode_param->value;
8285                         break;
8286                 case ISCSI_FLASHNODE_EXP_STATSN:
8287                         fnode_conn->exp_statsn =
8288                                                 *(uint32_t *)fnode_param->value;
8289                         break;
8290                 case ISCSI_FLASHNODE_CHAP_OUT_IDX:
8291                         chap_out_idx = *(uint16_t *)fnode_param->value;
8292                         if (!qla4xxx_get_uni_chap_at_index(ha,
8293                                                            chap_tbl.name,
8294                                                            chap_tbl.secret,
8295                                                            chap_out_idx)) {
8296                                 fnode_sess->chap_out_idx = chap_out_idx;
8297                                 /* Enable chap auth if chap index is valid */
8298                                 fnode_sess->chap_auth_en = QL4_PARAM_ENABLE;
8299                         }
8300                         break;
8301                 default:
8302                         ql4_printk(KERN_ERR, ha,
8303                                    "%s: No such sysfs attribute\n", __func__);
8304                         rc = -ENOSYS;
8305                         goto exit_set_param;
8306                 }
8307         }
8308
8309         rc = qla4xxx_sysfs_ddb_apply(fnode_sess, fnode_conn);
8310
8311 exit_set_param:
8312         return rc;
8313 }
8314
8315 /**
8316  * qla4xxx_sysfs_ddb_delete - Delete firmware DDB entry
8317  * @fnode_sess: pointer to session attrs of flash ddb entry
8318  *
8319  * This invalidates the flash ddb entry at the given index
8320  **/
8321 static int qla4xxx_sysfs_ddb_delete(struct iscsi_bus_flash_session *fnode_sess)
8322 {
8323         struct Scsi_Host *shost = iscsi_flash_session_to_shost(fnode_sess);
8324         struct scsi_qla_host *ha = to_qla_host(shost);
8325         uint32_t dev_db_start_offset;
8326         uint32_t dev_db_end_offset;
8327         struct dev_db_entry *fw_ddb_entry = NULL;
8328         dma_addr_t fw_ddb_entry_dma;
8329         uint16_t *ddb_cookie = NULL;
8330         size_t ddb_size = 0;
8331         void *pddb = NULL;
8332         int target_id;
8333         int rc = 0;
8334
8335         if (fnode_sess->is_boot_target) {
8336                 rc = -EPERM;
8337                 DEBUG2(ql4_printk(KERN_ERR, ha,
8338                                   "%s: Deletion of boot target entry is not permitted.\n",
8339                                   __func__));
8340                 goto exit_ddb_del;
8341         }
8342
8343         if (fnode_sess->flash_state == DEV_DB_NON_PERSISTENT)
8344                 goto sysfs_ddb_del;
8345
8346         if (is_qla40XX(ha)) {
8347                 dev_db_start_offset = FLASH_OFFSET_DB_INFO;
8348                 dev_db_end_offset = FLASH_OFFSET_DB_END;
8349                 dev_db_start_offset += (fnode_sess->target_id *
8350                                        sizeof(*fw_ddb_entry));
8351                 ddb_size = sizeof(*fw_ddb_entry);
8352         } else {
8353                 dev_db_start_offset = FLASH_RAW_ACCESS_ADDR +
8354                                       (ha->hw.flt_region_ddb << 2);
8355                 /* flt_ddb_size is DDB table size for both ports
8356                  * so divide it by 2 to calculate the offset for second port
8357                  */
8358                 if (ha->port_num == 1)
8359                         dev_db_start_offset += (ha->hw.flt_ddb_size / 2);
8360
8361                 dev_db_end_offset = dev_db_start_offset +
8362                                     (ha->hw.flt_ddb_size / 2);
8363
8364                 dev_db_start_offset += (fnode_sess->target_id *
8365                                        sizeof(*fw_ddb_entry));
8366                 dev_db_start_offset += offsetof(struct dev_db_entry, cookie);
8367
8368                 ddb_size = sizeof(*ddb_cookie);
8369         }
8370
8371         DEBUG2(ql4_printk(KERN_ERR, ha, "%s: start offset=%u, end offset=%u\n",
8372                           __func__, dev_db_start_offset, dev_db_end_offset));
8373
8374         if (dev_db_start_offset > dev_db_end_offset) {
8375                 rc = -EIO;
8376                 DEBUG2(ql4_printk(KERN_ERR, ha, "%s:Invalid DDB index %u\n",
8377                                   __func__, fnode_sess->target_id));
8378                 goto exit_ddb_del;
8379         }
8380
8381         pddb = dma_alloc_coherent(&ha->pdev->dev, ddb_size,
8382                                   &fw_ddb_entry_dma, GFP_KERNEL);
8383         if (!pddb) {
8384                 rc = -ENOMEM;
8385                 DEBUG2(ql4_printk(KERN_ERR, ha,
8386                                   "%s: Unable to allocate dma buffer\n",
8387                                   __func__));
8388                 goto exit_ddb_del;
8389         }
8390
8391         if (is_qla40XX(ha)) {
8392                 fw_ddb_entry = pddb;
8393                 memset(fw_ddb_entry, 0, ddb_size);
8394                 ddb_cookie = &fw_ddb_entry->cookie;
8395         } else {
8396                 ddb_cookie = pddb;
8397         }
8398
8399         /* invalidate the cookie */
8400         *ddb_cookie = 0xFFEE;
8401         qla4xxx_set_flash(ha, fw_ddb_entry_dma, dev_db_start_offset,
8402                           ddb_size, FLASH_OPT_RMW_COMMIT);
8403
8404 sysfs_ddb_del:
8405         target_id = fnode_sess->target_id;
8406         iscsi_destroy_flashnode_sess(fnode_sess);
8407         ql4_printk(KERN_INFO, ha,
8408                    "%s: session and conn entries for flashnode %u of host %lu deleted\n",
8409                    __func__, target_id, ha->host_no);
8410 exit_ddb_del:
8411         if (pddb)
8412                 dma_free_coherent(&ha->pdev->dev, ddb_size, pddb,
8413                                   fw_ddb_entry_dma);
8414         return rc;
8415 }
8416
8417 /**
8418  * qla4xxx_sysfs_ddb_export - Create sysfs entries for firmware DDBs
8419  * @ha: pointer to adapter structure
8420  *
8421  * Export the firmware DDB for all send targets and normal targets to sysfs.
8422  **/
8423 int qla4xxx_sysfs_ddb_export(struct scsi_qla_host *ha)
8424 {
8425         struct dev_db_entry *fw_ddb_entry = NULL;
8426         dma_addr_t fw_ddb_entry_dma;
8427         uint16_t max_ddbs;
8428         uint16_t idx = 0;
8429         int ret = QLA_SUCCESS;
8430
8431         fw_ddb_entry = dma_alloc_coherent(&ha->pdev->dev,
8432                                           sizeof(*fw_ddb_entry),
8433                                           &fw_ddb_entry_dma, GFP_KERNEL);
8434         if (!fw_ddb_entry) {
8435                 DEBUG2(ql4_printk(KERN_ERR, ha,
8436                                   "%s: Unable to allocate dma buffer\n",
8437                                   __func__));
8438                 return -ENOMEM;
8439         }
8440
8441         max_ddbs =  is_qla40XX(ha) ? MAX_PRST_DEV_DB_ENTRIES :
8442                                      MAX_DEV_DB_ENTRIES;
8443
8444         for (idx = 0; idx < max_ddbs; idx++) {
8445                 if (qla4xxx_flashdb_by_index(ha, fw_ddb_entry, fw_ddb_entry_dma,
8446                                              idx))
8447                         continue;
8448
8449                 ret = qla4xxx_sysfs_ddb_tgt_create(ha, fw_ddb_entry, &idx, 0);
8450                 if (ret) {
8451                         ret = -EIO;
8452                         break;
8453                 }
8454         }
8455
8456         dma_free_coherent(&ha->pdev->dev, sizeof(*fw_ddb_entry), fw_ddb_entry,
8457                           fw_ddb_entry_dma);
8458
8459         return ret;
8460 }
8461
8462 static void qla4xxx_sysfs_ddb_remove(struct scsi_qla_host *ha)
8463 {
8464         iscsi_destroy_all_flashnode(ha->host);
8465 }
8466
8467 /**
8468  * qla4xxx_build_ddb_list - Build ddb list and setup sessions
8469  * @ha: pointer to adapter structure
8470  * @is_reset: Is this init path or reset path
8471  *
8472  * Create a list of sendtargets (st) from firmware DDBs, issue send targets
8473  * using connection open, then create the list of normal targets (nt)
8474  * from firmware DDBs. Based on the list of nt setup session and connection
8475  * objects.
8476  **/
8477 void qla4xxx_build_ddb_list(struct scsi_qla_host *ha, int is_reset)
8478 {
8479         uint16_t tmo = 0;
8480         struct list_head list_st, list_nt;
8481         struct qla_ddb_index  *st_ddb_idx, *st_ddb_idx_tmp;
8482         unsigned long wtime;
8483
8484         if (!test_bit(AF_LINK_UP, &ha->flags)) {
8485                 set_bit(AF_BUILD_DDB_LIST, &ha->flags);
8486                 ha->is_reset = is_reset;
8487                 return;
8488         }
8489
8490         INIT_LIST_HEAD(&list_st);
8491         INIT_LIST_HEAD(&list_nt);
8492
8493         qla4xxx_build_st_list(ha, &list_st);
8494
8495         /* Before issuing conn open mbox, ensure all IPs states are configured
8496          * Note, conn open fails if IPs are not configured
8497          */
8498         qla4xxx_wait_for_ip_configuration(ha);
8499
8500         /* Go thru the STs and fire the sendtargets by issuing conn open mbx */
8501         list_for_each_entry_safe(st_ddb_idx, st_ddb_idx_tmp, &list_st, list) {
8502                 qla4xxx_conn_open(ha, st_ddb_idx->fw_ddb_idx);
8503         }
8504
8505         /* Wait to ensure all sendtargets are done for min 12 sec wait */
8506         tmo = ((ha->def_timeout > LOGIN_TOV) &&
8507                (ha->def_timeout < LOGIN_TOV * 10) ?
8508                ha->def_timeout : LOGIN_TOV);
8509
8510         DEBUG2(ql4_printk(KERN_INFO, ha,
8511                           "Default time to wait for build ddb %d\n", tmo));
8512
8513         wtime = jiffies + (HZ * tmo);
8514         do {
8515                 if (list_empty(&list_st))
8516                         break;
8517
8518                 qla4xxx_remove_failed_ddb(ha, &list_st);
8519                 schedule_timeout_uninterruptible(HZ / 10);
8520         } while (time_after(wtime, jiffies));
8521
8522
8523         qla4xxx_build_nt_list(ha, &list_nt, &list_st, is_reset);
8524
8525         qla4xxx_free_ddb_list(&list_st);
8526         qla4xxx_free_ddb_list(&list_nt);
8527
8528         qla4xxx_free_ddb_index(ha);
8529 }
8530
8531 /**
8532  * qla4xxx_wait_login_resp_boot_tgt -  Wait for iSCSI boot target login
8533  * response.
8534  * @ha: pointer to adapter structure
8535  *
8536  * When the boot entry is normal iSCSI target then DF_BOOT_TGT flag will be
8537  * set in DDB and we will wait for login response of boot targets during
8538  * probe.
8539  **/
8540 static void qla4xxx_wait_login_resp_boot_tgt(struct scsi_qla_host *ha)
8541 {
8542         struct ddb_entry *ddb_entry;
8543         struct dev_db_entry *fw_ddb_entry = NULL;
8544         dma_addr_t fw_ddb_entry_dma;
8545         unsigned long wtime;
8546         uint32_t ddb_state;
8547         int max_ddbs, idx, ret;
8548
8549         max_ddbs =  is_qla40XX(ha) ? MAX_DEV_DB_ENTRIES_40XX :
8550                                      MAX_DEV_DB_ENTRIES;
8551
8552         fw_ddb_entry = dma_alloc_coherent(&ha->pdev->dev, sizeof(*fw_ddb_entry),
8553                                           &fw_ddb_entry_dma, GFP_KERNEL);
8554         if (!fw_ddb_entry) {
8555                 ql4_printk(KERN_ERR, ha,
8556                            "%s: Unable to allocate dma buffer\n", __func__);
8557                 goto exit_login_resp;
8558         }
8559
8560         wtime = jiffies + (HZ * BOOT_LOGIN_RESP_TOV);
8561
8562         for (idx = 0; idx < max_ddbs; idx++) {
8563                 ddb_entry = qla4xxx_lookup_ddb_by_fw_index(ha, idx);
8564                 if (ddb_entry == NULL)
8565                         continue;
8566
8567                 if (test_bit(DF_BOOT_TGT, &ddb_entry->flags)) {
8568                         DEBUG2(ql4_printk(KERN_INFO, ha,
8569                                           "%s: DDB index [%d]\n", __func__,
8570                                           ddb_entry->fw_ddb_index));
8571                         do {
8572                                 ret = qla4xxx_get_fwddb_entry(ha,
8573                                                 ddb_entry->fw_ddb_index,
8574                                                 fw_ddb_entry, fw_ddb_entry_dma,
8575                                                 NULL, NULL, &ddb_state, NULL,
8576                                                 NULL, NULL);
8577                                 if (ret == QLA_ERROR)
8578                                         goto exit_login_resp;
8579
8580                                 if ((ddb_state == DDB_DS_SESSION_ACTIVE) ||
8581                                     (ddb_state == DDB_DS_SESSION_FAILED))
8582                                         break;
8583
8584                                 schedule_timeout_uninterruptible(HZ);
8585
8586                         } while ((time_after(wtime, jiffies)));
8587
8588                         if (!time_after(wtime, jiffies)) {
8589                                 DEBUG2(ql4_printk(KERN_INFO, ha,
8590                                                   "%s: Login response wait timer expired\n",
8591                                                   __func__));
8592                                  goto exit_login_resp;
8593                         }
8594                 }
8595         }
8596
8597 exit_login_resp:
8598         if (fw_ddb_entry)
8599                 dma_free_coherent(&ha->pdev->dev, sizeof(*fw_ddb_entry),
8600                                   fw_ddb_entry, fw_ddb_entry_dma);
8601 }
8602
8603 /**
8604  * qla4xxx_probe_adapter - callback function to probe HBA
8605  * @pdev: pointer to pci_dev structure
8606  * @ent: pointer to pci_device entry
8607  *
8608  * This routine will probe for Qlogic 4xxx iSCSI host adapters.
8609  * It returns zero if successful. It also initializes all data necessary for
8610  * the driver.
8611  **/
8612 static int qla4xxx_probe_adapter(struct pci_dev *pdev,
8613                                  const struct pci_device_id *ent)
8614 {
8615         int ret = -ENODEV, status;
8616         struct Scsi_Host *host;
8617         struct scsi_qla_host *ha;
8618         uint8_t init_retry_count = 0;
8619         char buf[34];
8620         struct qla4_8xxx_legacy_intr_set *nx_legacy_intr;
8621         uint32_t dev_state;
8622
8623         if (pci_enable_device(pdev))
8624                 return -1;
8625
8626         host = iscsi_host_alloc(&qla4xxx_driver_template, sizeof(*ha), 0);
8627         if (host == NULL) {
8628                 printk(KERN_WARNING
8629                        "qla4xxx: Couldn't allocate host from scsi layer!\n");
8630                 goto probe_disable_device;
8631         }
8632
8633         /* Clear our data area */
8634         ha = to_qla_host(host);
8635         memset(ha, 0, sizeof(*ha));
8636
8637         /* Save the information from PCI BIOS.  */
8638         ha->pdev = pdev;
8639         ha->host = host;
8640         ha->host_no = host->host_no;
8641         ha->func_num = PCI_FUNC(ha->pdev->devfn);
8642
8643         pci_enable_pcie_error_reporting(pdev);
8644
8645         /* Setup Runtime configurable options */
8646         if (is_qla8022(ha)) {
8647                 ha->isp_ops = &qla4_82xx_isp_ops;
8648                 ha->reg_tbl = (uint32_t *) qla4_82xx_reg_tbl;
8649                 ha->qdr_sn_window = -1;
8650                 ha->ddr_mn_window = -1;
8651                 ha->curr_window = 255;
8652                 nx_legacy_intr = &legacy_intr[ha->func_num];
8653                 ha->nx_legacy_intr.int_vec_bit = nx_legacy_intr->int_vec_bit;
8654                 ha->nx_legacy_intr.tgt_status_reg =
8655                         nx_legacy_intr->tgt_status_reg;
8656                 ha->nx_legacy_intr.tgt_mask_reg = nx_legacy_intr->tgt_mask_reg;
8657                 ha->nx_legacy_intr.pci_int_reg = nx_legacy_intr->pci_int_reg;
8658         } else if (is_qla8032(ha) || is_qla8042(ha)) {
8659                 ha->isp_ops = &qla4_83xx_isp_ops;
8660                 ha->reg_tbl = (uint32_t *)qla4_83xx_reg_tbl;
8661         } else {
8662                 ha->isp_ops = &qla4xxx_isp_ops;
8663         }
8664
8665         if (is_qla80XX(ha)) {
8666                 rwlock_init(&ha->hw_lock);
8667                 ha->pf_bit = ha->func_num << 16;
8668                 /* Set EEH reset type to fundamental if required by hba */
8669                 pdev->needs_freset = 1;
8670         }
8671
8672         /* Configure PCI I/O space. */
8673         ret = ha->isp_ops->iospace_config(ha);
8674         if (ret)
8675                 goto probe_failed_ioconfig;
8676
8677         ql4_printk(KERN_INFO, ha, "Found an ISP%04x, irq %d, iobase 0x%p\n",
8678                    pdev->device, pdev->irq, ha->reg);
8679
8680         qla4xxx_config_dma_addressing(ha);
8681
8682         /* Initialize lists and spinlocks. */
8683         INIT_LIST_HEAD(&ha->free_srb_q);
8684
8685         mutex_init(&ha->mbox_sem);
8686         mutex_init(&ha->chap_sem);
8687         init_completion(&ha->mbx_intr_comp);
8688         init_completion(&ha->disable_acb_comp);
8689         init_completion(&ha->idc_comp);
8690         init_completion(&ha->link_up_comp);
8691
8692         spin_lock_init(&ha->hardware_lock);
8693         spin_lock_init(&ha->work_lock);
8694
8695         /* Initialize work list */
8696         INIT_LIST_HEAD(&ha->work_list);
8697
8698         /* Allocate dma buffers */
8699         if (qla4xxx_mem_alloc(ha)) {
8700                 ql4_printk(KERN_WARNING, ha,
8701                     "[ERROR] Failed to allocate memory for adapter\n");
8702
8703                 ret = -ENOMEM;
8704                 goto probe_failed;
8705         }
8706
8707         host->cmd_per_lun = 3;
8708         host->max_channel = 0;
8709         host->max_lun = MAX_LUNS - 1;
8710         host->max_id = MAX_TARGETS;
8711         host->max_cmd_len = IOCB_MAX_CDB_LEN;
8712         host->can_queue = MAX_SRBS ;
8713         host->transportt = qla4xxx_scsi_transport;
8714
8715         pci_set_drvdata(pdev, ha);
8716
8717         ret = scsi_add_host(host, &pdev->dev);
8718         if (ret)
8719                 goto probe_failed;
8720
8721         if (is_qla80XX(ha))
8722                 qla4_8xxx_get_flash_info(ha);
8723
8724         if (is_qla8032(ha) || is_qla8042(ha)) {
8725                 qla4_83xx_read_reset_template(ha);
8726                 /*
8727                  * NOTE: If ql4dontresethba==1, set IDC_CTRL DONTRESET_BIT0.
8728                  * If DONRESET_BIT0 is set, drivers should not set dev_state
8729                  * to NEED_RESET. But if NEED_RESET is set, drivers should
8730                  * should honor the reset.
8731                  */
8732                 if (ql4xdontresethba == 1)
8733                         qla4_83xx_set_idc_dontreset(ha);
8734         }
8735
8736         /*
8737          * Initialize the Host adapter request/response queues and
8738          * firmware
8739          * NOTE: interrupts enabled upon successful completion
8740          */
8741         status = qla4xxx_initialize_adapter(ha, INIT_ADAPTER);
8742
8743         /* Dont retry adapter initialization if IRQ allocation failed */
8744         if (is_qla80XX(ha) && (status == QLA_ERROR))
8745                 goto skip_retry_init;
8746
8747         while ((!test_bit(AF_ONLINE, &ha->flags)) &&
8748             init_retry_count++ < MAX_INIT_RETRIES) {
8749
8750                 if (is_qla80XX(ha)) {
8751                         ha->isp_ops->idc_lock(ha);
8752                         dev_state = qla4_8xxx_rd_direct(ha,
8753                                                         QLA8XXX_CRB_DEV_STATE);
8754                         ha->isp_ops->idc_unlock(ha);
8755                         if (dev_state == QLA8XXX_DEV_FAILED) {
8756                                 ql4_printk(KERN_WARNING, ha, "%s: don't retry "
8757                                     "initialize adapter. H/W is in failed state\n",
8758                                     __func__);
8759                                 break;
8760                         }
8761                 }
8762                 DEBUG2(printk("scsi: %s: retrying adapter initialization "
8763                               "(%d)\n", __func__, init_retry_count));
8764
8765                 if (ha->isp_ops->reset_chip(ha) == QLA_ERROR)
8766                         continue;
8767
8768                 status = qla4xxx_initialize_adapter(ha, INIT_ADAPTER);
8769                 if (is_qla80XX(ha) && (status == QLA_ERROR)) {
8770                         if (qla4_8xxx_check_init_adapter_retry(ha) == QLA_ERROR)
8771                                 goto skip_retry_init;
8772                 }
8773         }
8774
8775 skip_retry_init:
8776         if (!test_bit(AF_ONLINE, &ha->flags)) {
8777                 ql4_printk(KERN_WARNING, ha, "Failed to initialize adapter\n");
8778
8779                 if ((is_qla8022(ha) && ql4xdontresethba) ||
8780                     ((is_qla8032(ha) || is_qla8042(ha)) &&
8781                      qla4_83xx_idc_dontreset(ha))) {
8782                         /* Put the device in failed state. */
8783                         DEBUG2(printk(KERN_ERR "HW STATE: FAILED\n"));
8784                         ha->isp_ops->idc_lock(ha);
8785                         qla4_8xxx_wr_direct(ha, QLA8XXX_CRB_DEV_STATE,
8786                                             QLA8XXX_DEV_FAILED);
8787                         ha->isp_ops->idc_unlock(ha);
8788                 }
8789                 ret = -ENODEV;
8790                 goto remove_host;
8791         }
8792
8793         /* Startup the kernel thread for this host adapter. */
8794         DEBUG2(printk("scsi: %s: Starting kernel thread for "
8795                       "qla4xxx_dpc\n", __func__));
8796         sprintf(buf, "qla4xxx_%lu_dpc", ha->host_no);
8797         ha->dpc_thread = create_singlethread_workqueue(buf);
8798         if (!ha->dpc_thread) {
8799                 ql4_printk(KERN_WARNING, ha, "Unable to start DPC thread!\n");
8800                 ret = -ENODEV;
8801                 goto remove_host;
8802         }
8803         INIT_WORK(&ha->dpc_work, qla4xxx_do_dpc);
8804
8805         ha->task_wq = alloc_workqueue("qla4xxx_%lu_task", WQ_MEM_RECLAIM, 1,
8806                                       ha->host_no);
8807         if (!ha->task_wq) {
8808                 ql4_printk(KERN_WARNING, ha, "Unable to start task thread!\n");
8809                 ret = -ENODEV;
8810                 goto remove_host;
8811         }
8812
8813         /*
8814          * For ISP-8XXX, request_irqs is called in qla4_8xxx_load_risc
8815          * (which is called indirectly by qla4xxx_initialize_adapter),
8816          * so that irqs will be registered after crbinit but before
8817          * mbx_intr_enable.
8818          */
8819         if (is_qla40XX(ha)) {
8820                 ret = qla4xxx_request_irqs(ha);
8821                 if (ret) {
8822                         ql4_printk(KERN_WARNING, ha, "Failed to reserve "
8823                             "interrupt %d already in use.\n", pdev->irq);
8824                         goto remove_host;
8825                 }
8826         }
8827
8828         pci_save_state(ha->pdev);
8829         ha->isp_ops->enable_intrs(ha);
8830
8831         /* Start timer thread. */
8832         qla4xxx_start_timer(ha, 1);
8833
8834         set_bit(AF_INIT_DONE, &ha->flags);
8835
8836         qla4_8xxx_alloc_sysfs_attr(ha);
8837
8838         printk(KERN_INFO
8839                " QLogic iSCSI HBA Driver version: %s\n"
8840                "  QLogic ISP%04x @ %s, host#=%ld, fw=%02d.%02d.%02d.%02d\n",
8841                qla4xxx_version_str, ha->pdev->device, pci_name(ha->pdev),
8842                ha->host_no, ha->fw_info.fw_major, ha->fw_info.fw_minor,
8843                ha->fw_info.fw_patch, ha->fw_info.fw_build);
8844
8845         /* Set the driver version */
8846         if (is_qla80XX(ha))
8847                 qla4_8xxx_set_param(ha, SET_DRVR_VERSION);
8848
8849         if (qla4xxx_setup_boot_info(ha))
8850                 ql4_printk(KERN_ERR, ha,
8851                            "%s: No iSCSI boot target configured\n", __func__);
8852
8853         set_bit(DPC_SYSFS_DDB_EXPORT, &ha->dpc_flags);
8854         /* Perform the build ddb list and login to each */
8855         qla4xxx_build_ddb_list(ha, INIT_ADAPTER);
8856         iscsi_host_for_each_session(ha->host, qla4xxx_login_flash_ddb);
8857         qla4xxx_wait_login_resp_boot_tgt(ha);
8858
8859         qla4xxx_create_chap_list(ha);
8860
8861         qla4xxx_create_ifaces(ha);
8862         return 0;
8863
8864 remove_host:
8865         scsi_remove_host(ha->host);
8866
8867 probe_failed:
8868         qla4xxx_free_adapter(ha);
8869
8870 probe_failed_ioconfig:
8871         pci_disable_pcie_error_reporting(pdev);
8872         scsi_host_put(ha->host);
8873
8874 probe_disable_device:
8875         pci_disable_device(pdev);
8876
8877         return ret;
8878 }
8879
8880 /**
8881  * qla4xxx_prevent_other_port_reinit - prevent other port from re-initialize
8882  * @ha: pointer to adapter structure
8883  *
8884  * Mark the other ISP-4xxx port to indicate that the driver is being removed,
8885  * so that the other port will not re-initialize while in the process of
8886  * removing the ha due to driver unload or hba hotplug.
8887  **/
8888 static void qla4xxx_prevent_other_port_reinit(struct scsi_qla_host *ha)
8889 {
8890         struct scsi_qla_host *other_ha = NULL;
8891         struct pci_dev *other_pdev = NULL;
8892         int fn = ISP4XXX_PCI_FN_2;
8893
8894         /*iscsi function numbers for ISP4xxx is 1 and 3*/
8895         if (PCI_FUNC(ha->pdev->devfn) & BIT_1)
8896                 fn = ISP4XXX_PCI_FN_1;
8897
8898         other_pdev =
8899                 pci_get_domain_bus_and_slot(pci_domain_nr(ha->pdev->bus),
8900                 ha->pdev->bus->number, PCI_DEVFN(PCI_SLOT(ha->pdev->devfn),
8901                 fn));
8902
8903         /* Get other_ha if other_pdev is valid and state is enable*/
8904         if (other_pdev) {
8905                 if (atomic_read(&other_pdev->enable_cnt)) {
8906                         other_ha = pci_get_drvdata(other_pdev);
8907                         if (other_ha) {
8908                                 set_bit(AF_HA_REMOVAL, &other_ha->flags);
8909                                 DEBUG2(ql4_printk(KERN_INFO, ha, "%s: "
8910                                     "Prevent %s reinit\n", __func__,
8911                                     dev_name(&other_ha->pdev->dev)));
8912                         }
8913                 }
8914                 pci_dev_put(other_pdev);
8915         }
8916 }
8917
8918 static void qla4xxx_destroy_ddb(struct scsi_qla_host *ha,
8919                 struct ddb_entry *ddb_entry)
8920 {
8921         struct dev_db_entry *fw_ddb_entry = NULL;
8922         dma_addr_t fw_ddb_entry_dma;
8923         unsigned long wtime;
8924         uint32_t ddb_state;
8925         int options;
8926         int status;
8927
8928         options = LOGOUT_OPTION_CLOSE_SESSION;
8929         if (qla4xxx_session_logout_ddb(ha, ddb_entry, options) == QLA_ERROR) {
8930                 ql4_printk(KERN_ERR, ha, "%s: Logout failed\n", __func__);
8931                 goto clear_ddb;
8932         }
8933
8934         fw_ddb_entry = dma_alloc_coherent(&ha->pdev->dev, sizeof(*fw_ddb_entry),
8935                                           &fw_ddb_entry_dma, GFP_KERNEL);
8936         if (!fw_ddb_entry) {
8937                 ql4_printk(KERN_ERR, ha,
8938                            "%s: Unable to allocate dma buffer\n", __func__);
8939                 goto clear_ddb;
8940         }
8941
8942         wtime = jiffies + (HZ * LOGOUT_TOV);
8943         do {
8944                 status = qla4xxx_get_fwddb_entry(ha, ddb_entry->fw_ddb_index,
8945                                                  fw_ddb_entry, fw_ddb_entry_dma,
8946                                                  NULL, NULL, &ddb_state, NULL,
8947                                                  NULL, NULL);
8948                 if (status == QLA_ERROR)
8949                         goto free_ddb;
8950
8951                 if ((ddb_state == DDB_DS_NO_CONNECTION_ACTIVE) ||
8952                     (ddb_state == DDB_DS_SESSION_FAILED))
8953                         goto free_ddb;
8954
8955                 schedule_timeout_uninterruptible(HZ);
8956         } while ((time_after(wtime, jiffies)));
8957
8958 free_ddb:
8959         dma_free_coherent(&ha->pdev->dev, sizeof(*fw_ddb_entry),
8960                           fw_ddb_entry, fw_ddb_entry_dma);
8961 clear_ddb:
8962         qla4xxx_clear_ddb_entry(ha, ddb_entry->fw_ddb_index);
8963 }
8964
8965 static void qla4xxx_destroy_fw_ddb_session(struct scsi_qla_host *ha)
8966 {
8967         struct ddb_entry *ddb_entry;
8968         int idx;
8969
8970         for (idx = 0; idx < MAX_DDB_ENTRIES; idx++) {
8971
8972                 ddb_entry = qla4xxx_lookup_ddb_by_fw_index(ha, idx);
8973                 if ((ddb_entry != NULL) &&
8974                     (ddb_entry->ddb_type == FLASH_DDB)) {
8975
8976                         qla4xxx_destroy_ddb(ha, ddb_entry);
8977                         /*
8978                          * we have decremented the reference count of the driver
8979                          * when we setup the session to have the driver unload
8980                          * to be seamless without actually destroying the
8981                          * session
8982                          **/
8983                         try_module_get(qla4xxx_iscsi_transport.owner);
8984                         iscsi_destroy_endpoint(ddb_entry->conn->ep);
8985                         qla4xxx_free_ddb(ha, ddb_entry);
8986                         iscsi_session_teardown(ddb_entry->sess);
8987                 }
8988         }
8989 }
8990 /**
8991  * qla4xxx_remove_adapter - callback function to remove adapter.
8992  * @pdev: PCI device pointer
8993  **/
8994 static void qla4xxx_remove_adapter(struct pci_dev *pdev)
8995 {
8996         struct scsi_qla_host *ha;
8997
8998         /*
8999          * If the PCI device is disabled then it means probe_adapter had
9000          * failed and resources already cleaned up on probe_adapter exit.
9001          */
9002         if (!pci_is_enabled(pdev))
9003                 return;
9004
9005         ha = pci_get_drvdata(pdev);
9006
9007         if (is_qla40XX(ha))
9008                 qla4xxx_prevent_other_port_reinit(ha);
9009
9010         /* destroy iface from sysfs */
9011         qla4xxx_destroy_ifaces(ha);
9012
9013         if ((!ql4xdisablesysfsboot) && ha->boot_kset)
9014                 iscsi_boot_destroy_kset(ha->boot_kset);
9015
9016         qla4xxx_destroy_fw_ddb_session(ha);
9017         qla4_8xxx_free_sysfs_attr(ha);
9018
9019         qla4xxx_sysfs_ddb_remove(ha);
9020         scsi_remove_host(ha->host);
9021
9022         qla4xxx_free_adapter(ha);
9023
9024         scsi_host_put(ha->host);
9025
9026         pci_disable_pcie_error_reporting(pdev);
9027         pci_disable_device(pdev);
9028 }
9029
9030 /**
9031  * qla4xxx_config_dma_addressing() - Configure OS DMA addressing method.
9032  * @ha: HA context
9033  */
9034 static void qla4xxx_config_dma_addressing(struct scsi_qla_host *ha)
9035 {
9036         /* Update our PCI device dma_mask for full 64 bit mask */
9037         if (dma_set_mask_and_coherent(&ha->pdev->dev, DMA_BIT_MASK(64))) {
9038                 dev_dbg(&ha->pdev->dev,
9039                           "Failed to set 64 bit PCI consistent mask; "
9040                            "using 32 bit.\n");
9041                 dma_set_mask_and_coherent(&ha->pdev->dev, DMA_BIT_MASK(32));
9042         }
9043 }
9044
9045 static int qla4xxx_slave_alloc(struct scsi_device *sdev)
9046 {
9047         struct iscsi_cls_session *cls_sess;
9048         struct iscsi_session *sess;
9049         struct ddb_entry *ddb;
9050         int queue_depth = QL4_DEF_QDEPTH;
9051
9052         cls_sess = starget_to_session(sdev->sdev_target);
9053         sess = cls_sess->dd_data;
9054         ddb = sess->dd_data;
9055
9056         sdev->hostdata = ddb;
9057
9058         if (ql4xmaxqdepth != 0 && ql4xmaxqdepth <= 0xffffU)
9059                 queue_depth = ql4xmaxqdepth;
9060
9061         scsi_change_queue_depth(sdev, queue_depth);
9062         return 0;
9063 }
9064
9065 /**
9066  * qla4xxx_del_from_active_array - returns an active srb
9067  * @ha: Pointer to host adapter structure.
9068  * @index: index into the active_array
9069  *
9070  * This routine removes and returns the srb at the specified index
9071  **/
9072 struct srb *qla4xxx_del_from_active_array(struct scsi_qla_host *ha,
9073     uint32_t index)
9074 {
9075         struct srb *srb = NULL;
9076         struct scsi_cmnd *cmd = NULL;
9077
9078         cmd = scsi_host_find_tag(ha->host, index);
9079         if (!cmd)
9080                 return srb;
9081
9082         srb = (struct srb *)CMD_SP(cmd);
9083         if (!srb)
9084                 return srb;
9085
9086         /* update counters */
9087         if (srb->flags & SRB_DMA_VALID) {
9088                 ha->iocb_cnt -= srb->iocb_cnt;
9089                 if (srb->cmd)
9090                         srb->cmd->host_scribble =
9091                                 (unsigned char *)(unsigned long) MAX_SRBS;
9092         }
9093         return srb;
9094 }
9095
9096 /**
9097  * qla4xxx_eh_wait_on_command - waits for command to be returned by firmware
9098  * @ha: Pointer to host adapter structure.
9099  * @cmd: Scsi Command to wait on.
9100  *
9101  * This routine waits for the command to be returned by the Firmware
9102  * for some max time.
9103  **/
9104 static int qla4xxx_eh_wait_on_command(struct scsi_qla_host *ha,
9105                                       struct scsi_cmnd *cmd)
9106 {
9107         int done = 0;
9108         struct srb *rp;
9109         uint32_t max_wait_time = EH_WAIT_CMD_TOV;
9110         int ret = SUCCESS;
9111
9112         /* Dont wait on command if PCI error is being handled
9113          * by PCI AER driver
9114          */
9115         if (unlikely(pci_channel_offline(ha->pdev)) ||
9116             (test_bit(AF_EEH_BUSY, &ha->flags))) {
9117                 ql4_printk(KERN_WARNING, ha, "scsi%ld: Return from %s\n",
9118                     ha->host_no, __func__);
9119                 return ret;
9120         }
9121
9122         do {
9123                 /* Checking to see if its returned to OS */
9124                 rp = (struct srb *) CMD_SP(cmd);
9125                 if (rp == NULL) {
9126                         done++;
9127                         break;
9128                 }
9129
9130                 msleep(2000);
9131         } while (max_wait_time--);
9132
9133         return done;
9134 }
9135
9136 /**
9137  * qla4xxx_wait_for_hba_online - waits for HBA to come online
9138  * @ha: Pointer to host adapter structure
9139  **/
9140 static int qla4xxx_wait_for_hba_online(struct scsi_qla_host *ha)
9141 {
9142         unsigned long wait_online;
9143
9144         wait_online = jiffies + (HBA_ONLINE_TOV * HZ);
9145         while (time_before(jiffies, wait_online)) {
9146
9147                 if (adapter_up(ha))
9148                         return QLA_SUCCESS;
9149
9150                 msleep(2000);
9151         }
9152
9153         return QLA_ERROR;
9154 }
9155
9156 /**
9157  * qla4xxx_eh_wait_for_commands - wait for active cmds to finish.
9158  * @ha: pointer to HBA
9159  * @stgt: pointer to SCSI target
9160  * @sdev: pointer to SCSI device
9161  *
9162  * This function waits for all outstanding commands to a lun to complete. It
9163  * returns 0 if all pending commands are returned and 1 otherwise.
9164  **/
9165 static int qla4xxx_eh_wait_for_commands(struct scsi_qla_host *ha,
9166                                         struct scsi_target *stgt,
9167                                         struct scsi_device *sdev)
9168 {
9169         int cnt;
9170         int status = 0;
9171         struct scsi_cmnd *cmd;
9172
9173         /*
9174          * Waiting for all commands for the designated target or dev
9175          * in the active array
9176          */
9177         for (cnt = 0; cnt < ha->host->can_queue; cnt++) {
9178                 cmd = scsi_host_find_tag(ha->host, cnt);
9179                 if (cmd && stgt == scsi_target(cmd->device) &&
9180                     (!sdev || sdev == cmd->device)) {
9181                         if (!qla4xxx_eh_wait_on_command(ha, cmd)) {
9182                                 status++;
9183                                 break;
9184                         }
9185                 }
9186         }
9187         return status;
9188 }
9189
9190 /**
9191  * qla4xxx_eh_abort - callback for abort task.
9192  * @cmd: Pointer to Linux's SCSI command structure
9193  *
9194  * This routine is called by the Linux OS to abort the specified
9195  * command.
9196  **/
9197 static int qla4xxx_eh_abort(struct scsi_cmnd *cmd)
9198 {
9199         struct scsi_qla_host *ha = to_qla_host(cmd->device->host);
9200         unsigned int id = cmd->device->id;
9201         uint64_t lun = cmd->device->lun;
9202         unsigned long flags;
9203         struct srb *srb = NULL;
9204         int ret = SUCCESS;
9205         int wait = 0;
9206         int rval;
9207
9208         ql4_printk(KERN_INFO, ha, "scsi%ld:%d:%llu: Abort command issued cmd=%p, cdb=0x%x\n",
9209                    ha->host_no, id, lun, cmd, cmd->cmnd[0]);
9210
9211         rval = qla4xxx_isp_check_reg(ha);
9212         if (rval != QLA_SUCCESS) {
9213                 ql4_printk(KERN_INFO, ha, "PCI/Register disconnect, exiting.\n");
9214                 return FAILED;
9215         }
9216
9217         spin_lock_irqsave(&ha->hardware_lock, flags);
9218         srb = (struct srb *) CMD_SP(cmd);
9219         if (!srb) {
9220                 spin_unlock_irqrestore(&ha->hardware_lock, flags);
9221                 ql4_printk(KERN_INFO, ha, "scsi%ld:%d:%llu: Specified command has already completed.\n",
9222                            ha->host_no, id, lun);
9223                 return SUCCESS;
9224         }
9225         kref_get(&srb->srb_ref);
9226         spin_unlock_irqrestore(&ha->hardware_lock, flags);
9227
9228         if (qla4xxx_abort_task(ha, srb) != QLA_SUCCESS) {
9229                 DEBUG3(printk("scsi%ld:%d:%llu: Abort_task mbx failed.\n",
9230                     ha->host_no, id, lun));
9231                 ret = FAILED;
9232         } else {
9233                 DEBUG3(printk("scsi%ld:%d:%llu: Abort_task mbx success.\n",
9234                     ha->host_no, id, lun));
9235                 wait = 1;
9236         }
9237
9238         kref_put(&srb->srb_ref, qla4xxx_srb_compl);
9239
9240         /* Wait for command to complete */
9241         if (wait) {
9242                 if (!qla4xxx_eh_wait_on_command(ha, cmd)) {
9243                         DEBUG2(printk("scsi%ld:%d:%llu: Abort handler timed out\n",
9244                             ha->host_no, id, lun));
9245                         ret = FAILED;
9246                 }
9247         }
9248
9249         ql4_printk(KERN_INFO, ha,
9250             "scsi%ld:%d:%llu: Abort command - %s\n",
9251             ha->host_no, id, lun, (ret == SUCCESS) ? "succeeded" : "failed");
9252
9253         return ret;
9254 }
9255
9256 /**
9257  * qla4xxx_eh_device_reset - callback for target reset.
9258  * @cmd: Pointer to Linux's SCSI command structure
9259  *
9260  * This routine is called by the Linux OS to reset all luns on the
9261  * specified target.
9262  **/
9263 static int qla4xxx_eh_device_reset(struct scsi_cmnd *cmd)
9264 {
9265         struct scsi_qla_host *ha = to_qla_host(cmd->device->host);
9266         struct ddb_entry *ddb_entry = cmd->device->hostdata;
9267         int ret = FAILED, stat;
9268         int rval;
9269
9270         if (!ddb_entry)
9271                 return ret;
9272
9273         ret = iscsi_block_scsi_eh(cmd);
9274         if (ret)
9275                 return ret;
9276         ret = FAILED;
9277
9278         ql4_printk(KERN_INFO, ha,
9279                    "scsi%ld:%d:%d:%llu: DEVICE RESET ISSUED.\n", ha->host_no,
9280                    cmd->device->channel, cmd->device->id, cmd->device->lun);
9281
9282         DEBUG2(printk(KERN_INFO
9283                       "scsi%ld: DEVICE_RESET cmd=%p jiffies = 0x%lx, to=%x,"
9284                       "dpc_flags=%lx, status=%x allowed=%d\n", ha->host_no,
9285                       cmd, jiffies, cmd->request->timeout / HZ,
9286                       ha->dpc_flags, cmd->result, cmd->allowed));
9287
9288         rval = qla4xxx_isp_check_reg(ha);
9289         if (rval != QLA_SUCCESS) {
9290                 ql4_printk(KERN_INFO, ha, "PCI/Register disconnect, exiting.\n");
9291                 return FAILED;
9292         }
9293
9294         /* FIXME: wait for hba to go online */
9295         stat = qla4xxx_reset_lun(ha, ddb_entry, cmd->device->lun);
9296         if (stat != QLA_SUCCESS) {
9297                 ql4_printk(KERN_INFO, ha, "DEVICE RESET FAILED. %d\n", stat);
9298                 goto eh_dev_reset_done;
9299         }
9300
9301         if (qla4xxx_eh_wait_for_commands(ha, scsi_target(cmd->device),
9302                                          cmd->device)) {
9303                 ql4_printk(KERN_INFO, ha,
9304                            "DEVICE RESET FAILED - waiting for "
9305                            "commands.\n");
9306                 goto eh_dev_reset_done;
9307         }
9308
9309         /* Send marker. */
9310         if (qla4xxx_send_marker_iocb(ha, ddb_entry, cmd->device->lun,
9311                 MM_LUN_RESET) != QLA_SUCCESS)
9312                 goto eh_dev_reset_done;
9313
9314         ql4_printk(KERN_INFO, ha,
9315                    "scsi(%ld:%d:%d:%llu): DEVICE RESET SUCCEEDED.\n",
9316                    ha->host_no, cmd->device->channel, cmd->device->id,
9317                    cmd->device->lun);
9318
9319         ret = SUCCESS;
9320
9321 eh_dev_reset_done:
9322
9323         return ret;
9324 }
9325
9326 /**
9327  * qla4xxx_eh_target_reset - callback for target reset.
9328  * @cmd: Pointer to Linux's SCSI command structure
9329  *
9330  * This routine is called by the Linux OS to reset the target.
9331  **/
9332 static int qla4xxx_eh_target_reset(struct scsi_cmnd *cmd)
9333 {
9334         struct scsi_qla_host *ha = to_qla_host(cmd->device->host);
9335         struct ddb_entry *ddb_entry = cmd->device->hostdata;
9336         int stat, ret;
9337         int rval;
9338
9339         if (!ddb_entry)
9340                 return FAILED;
9341
9342         ret = iscsi_block_scsi_eh(cmd);
9343         if (ret)
9344                 return ret;
9345
9346         starget_printk(KERN_INFO, scsi_target(cmd->device),
9347                        "WARM TARGET RESET ISSUED.\n");
9348
9349         DEBUG2(printk(KERN_INFO
9350                       "scsi%ld: TARGET_DEVICE_RESET cmd=%p jiffies = 0x%lx, "
9351                       "to=%x,dpc_flags=%lx, status=%x allowed=%d\n",
9352                       ha->host_no, cmd, jiffies, cmd->request->timeout / HZ,
9353                       ha->dpc_flags, cmd->result, cmd->allowed));
9354
9355         rval = qla4xxx_isp_check_reg(ha);
9356         if (rval != QLA_SUCCESS) {
9357                 ql4_printk(KERN_INFO, ha, "PCI/Register disconnect, exiting.\n");
9358                 return FAILED;
9359         }
9360
9361         stat = qla4xxx_reset_target(ha, ddb_entry);
9362         if (stat != QLA_SUCCESS) {
9363                 starget_printk(KERN_INFO, scsi_target(cmd->device),
9364                                "WARM TARGET RESET FAILED.\n");
9365                 return FAILED;
9366         }
9367
9368         if (qla4xxx_eh_wait_for_commands(ha, scsi_target(cmd->device),
9369                                          NULL)) {
9370                 starget_printk(KERN_INFO, scsi_target(cmd->device),
9371                                "WARM TARGET DEVICE RESET FAILED - "
9372                                "waiting for commands.\n");
9373                 return FAILED;
9374         }
9375
9376         /* Send marker. */
9377         if (qla4xxx_send_marker_iocb(ha, ddb_entry, cmd->device->lun,
9378                 MM_TGT_WARM_RESET) != QLA_SUCCESS) {
9379                 starget_printk(KERN_INFO, scsi_target(cmd->device),
9380                                "WARM TARGET DEVICE RESET FAILED - "
9381                                "marker iocb failed.\n");
9382                 return FAILED;
9383         }
9384
9385         starget_printk(KERN_INFO, scsi_target(cmd->device),
9386                        "WARM TARGET RESET SUCCEEDED.\n");
9387         return SUCCESS;
9388 }
9389
9390 /**
9391  * qla4xxx_is_eh_active - check if error handler is running
9392  * @shost: Pointer to SCSI Host struct
9393  *
9394  * This routine finds that if reset host is called in EH
9395  * scenario or from some application like sg_reset
9396  **/
9397 static int qla4xxx_is_eh_active(struct Scsi_Host *shost)
9398 {
9399         if (shost->shost_state == SHOST_RECOVERY)
9400                 return 1;
9401         return 0;
9402 }
9403
9404 /**
9405  * qla4xxx_eh_host_reset - kernel callback
9406  * @cmd: Pointer to Linux's SCSI command structure
9407  *
9408  * This routine is invoked by the Linux kernel to perform fatal error
9409  * recovery on the specified adapter.
9410  **/
9411 static int qla4xxx_eh_host_reset(struct scsi_cmnd *cmd)
9412 {
9413         int return_status = FAILED;
9414         struct scsi_qla_host *ha;
9415         int rval;
9416
9417         ha = to_qla_host(cmd->device->host);
9418
9419         rval = qla4xxx_isp_check_reg(ha);
9420         if (rval != QLA_SUCCESS) {
9421                 ql4_printk(KERN_INFO, ha, "PCI/Register disconnect, exiting.\n");
9422                 return FAILED;
9423         }
9424
9425         if ((is_qla8032(ha) || is_qla8042(ha)) && ql4xdontresethba)
9426                 qla4_83xx_set_idc_dontreset(ha);
9427
9428         /*
9429          * For ISP8324 and ISP8042, if IDC_CTRL DONTRESET_BIT0 is set by other
9430          * protocol drivers, we should not set device_state to NEED_RESET
9431          */
9432         if (ql4xdontresethba ||
9433             ((is_qla8032(ha) || is_qla8042(ha)) &&
9434              qla4_83xx_idc_dontreset(ha))) {
9435                 DEBUG2(printk("scsi%ld: %s: Don't Reset HBA\n",
9436                      ha->host_no, __func__));
9437
9438                 /* Clear outstanding srb in queues */
9439                 if (qla4xxx_is_eh_active(cmd->device->host))
9440                         qla4xxx_abort_active_cmds(ha, DID_ABORT << 16);
9441
9442                 return FAILED;
9443         }
9444
9445         ql4_printk(KERN_INFO, ha,
9446                    "scsi(%ld:%d:%d:%llu): HOST RESET ISSUED.\n", ha->host_no,
9447                    cmd->device->channel, cmd->device->id, cmd->device->lun);
9448
9449         if (qla4xxx_wait_for_hba_online(ha) != QLA_SUCCESS) {
9450                 DEBUG2(printk("scsi%ld:%d: %s: Unable to reset host.  Adapter "
9451                               "DEAD.\n", ha->host_no, cmd->device->channel,
9452                               __func__));
9453
9454                 return FAILED;
9455         }
9456
9457         if (!test_bit(DPC_RESET_HA, &ha->dpc_flags)) {
9458                 if (is_qla80XX(ha))
9459                         set_bit(DPC_RESET_HA_FW_CONTEXT, &ha->dpc_flags);
9460                 else
9461                         set_bit(DPC_RESET_HA, &ha->dpc_flags);
9462         }
9463
9464         if (qla4xxx_recover_adapter(ha) == QLA_SUCCESS)
9465                 return_status = SUCCESS;
9466
9467         ql4_printk(KERN_INFO, ha, "HOST RESET %s.\n",
9468                    return_status == FAILED ? "FAILED" : "SUCCEEDED");
9469
9470         return return_status;
9471 }
9472
9473 static int qla4xxx_context_reset(struct scsi_qla_host *ha)
9474 {
9475         uint32_t mbox_cmd[MBOX_REG_COUNT];
9476         uint32_t mbox_sts[MBOX_REG_COUNT];
9477         struct addr_ctrl_blk_def *acb = NULL;
9478         uint32_t acb_len = sizeof(struct addr_ctrl_blk_def);
9479         int rval = QLA_SUCCESS;
9480         dma_addr_t acb_dma;
9481
9482         acb = dma_alloc_coherent(&ha->pdev->dev,
9483                                  sizeof(struct addr_ctrl_blk_def),
9484                                  &acb_dma, GFP_KERNEL);
9485         if (!acb) {
9486                 ql4_printk(KERN_ERR, ha, "%s: Unable to alloc acb\n",
9487                            __func__);
9488                 rval = -ENOMEM;
9489                 goto exit_port_reset;
9490         }
9491
9492         memset(acb, 0, acb_len);
9493
9494         rval = qla4xxx_get_acb(ha, acb_dma, PRIMARI_ACB, acb_len);
9495         if (rval != QLA_SUCCESS) {
9496                 rval = -EIO;
9497                 goto exit_free_acb;
9498         }
9499
9500         rval = qla4xxx_disable_acb(ha);
9501         if (rval != QLA_SUCCESS) {
9502                 rval = -EIO;
9503                 goto exit_free_acb;
9504         }
9505
9506         wait_for_completion_timeout(&ha->disable_acb_comp,
9507                                     DISABLE_ACB_TOV * HZ);
9508
9509         rval = qla4xxx_set_acb(ha, &mbox_cmd[0], &mbox_sts[0], acb_dma);
9510         if (rval != QLA_SUCCESS) {
9511                 rval = -EIO;
9512                 goto exit_free_acb;
9513         }
9514
9515 exit_free_acb:
9516         dma_free_coherent(&ha->pdev->dev, sizeof(struct addr_ctrl_blk_def),
9517                           acb, acb_dma);
9518 exit_port_reset:
9519         DEBUG2(ql4_printk(KERN_INFO, ha, "%s %s\n", __func__,
9520                           rval == QLA_SUCCESS ? "SUCCEEDED" : "FAILED"));
9521         return rval;
9522 }
9523
9524 static int qla4xxx_host_reset(struct Scsi_Host *shost, int reset_type)
9525 {
9526         struct scsi_qla_host *ha = to_qla_host(shost);
9527         int rval = QLA_SUCCESS;
9528         uint32_t idc_ctrl;
9529
9530         if (ql4xdontresethba) {
9531                 DEBUG2(ql4_printk(KERN_INFO, ha, "%s: Don't Reset HBA\n",
9532                                   __func__));
9533                 rval = -EPERM;
9534                 goto exit_host_reset;
9535         }
9536
9537         if (test_bit(DPC_RESET_HA, &ha->dpc_flags))
9538                 goto recover_adapter;
9539
9540         switch (reset_type) {
9541         case SCSI_ADAPTER_RESET:
9542                 set_bit(DPC_RESET_HA, &ha->dpc_flags);
9543                 break;
9544         case SCSI_FIRMWARE_RESET:
9545                 if (!test_bit(DPC_RESET_HA, &ha->dpc_flags)) {
9546                         if (is_qla80XX(ha))
9547                                 /* set firmware context reset */
9548                                 set_bit(DPC_RESET_HA_FW_CONTEXT,
9549                                         &ha->dpc_flags);
9550                         else {
9551                                 rval = qla4xxx_context_reset(ha);
9552                                 goto exit_host_reset;
9553                         }
9554                 }
9555                 break;
9556         }
9557
9558 recover_adapter:
9559         /* For ISP8324 and ISP8042 set graceful reset bit in IDC_DRV_CTRL if
9560          * reset is issued by application */
9561         if ((is_qla8032(ha) || is_qla8042(ha)) &&
9562             test_bit(DPC_RESET_HA, &ha->dpc_flags)) {
9563                 idc_ctrl = qla4_83xx_rd_reg(ha, QLA83XX_IDC_DRV_CTRL);
9564                 qla4_83xx_wr_reg(ha, QLA83XX_IDC_DRV_CTRL,
9565                                  (idc_ctrl | GRACEFUL_RESET_BIT1));
9566         }
9567
9568         rval = qla4xxx_recover_adapter(ha);
9569         if (rval != QLA_SUCCESS) {
9570                 DEBUG2(ql4_printk(KERN_INFO, ha, "%s: recover adapter fail\n",
9571                                   __func__));
9572                 rval = -EIO;
9573         }
9574
9575 exit_host_reset:
9576         return rval;
9577 }
9578
9579 /* PCI AER driver recovers from all correctable errors w/o
9580  * driver intervention. For uncorrectable errors PCI AER
9581  * driver calls the following device driver's callbacks
9582  *
9583  * - Fatal Errors - link_reset
9584  * - Non-Fatal Errors - driver's error_detected() which
9585  * returns CAN_RECOVER, NEED_RESET or DISCONNECT.
9586  *
9587  * PCI AER driver calls
9588  * CAN_RECOVER - driver's mmio_enabled(), mmio_enabled()
9589  *               returns RECOVERED or NEED_RESET if fw_hung
9590  * NEED_RESET - driver's slot_reset()
9591  * DISCONNECT - device is dead & cannot recover
9592  * RECOVERED - driver's resume()
9593  */
9594 static pci_ers_result_t
9595 qla4xxx_pci_error_detected(struct pci_dev *pdev, pci_channel_state_t state)
9596 {
9597         struct scsi_qla_host *ha = pci_get_drvdata(pdev);
9598
9599         ql4_printk(KERN_WARNING, ha, "scsi%ld: %s: error detected:state %x\n",
9600             ha->host_no, __func__, state);
9601
9602         if (!is_aer_supported(ha))
9603                 return PCI_ERS_RESULT_NONE;
9604
9605         switch (state) {
9606         case pci_channel_io_normal:
9607                 clear_bit(AF_EEH_BUSY, &ha->flags);
9608                 return PCI_ERS_RESULT_CAN_RECOVER;
9609         case pci_channel_io_frozen:
9610                 set_bit(AF_EEH_BUSY, &ha->flags);
9611                 qla4xxx_mailbox_premature_completion(ha);
9612                 qla4xxx_free_irqs(ha);
9613                 pci_disable_device(pdev);
9614                 /* Return back all IOs */
9615                 qla4xxx_abort_active_cmds(ha, DID_RESET << 16);
9616                 return PCI_ERS_RESULT_NEED_RESET;
9617         case pci_channel_io_perm_failure:
9618                 set_bit(AF_EEH_BUSY, &ha->flags);
9619                 set_bit(AF_PCI_CHANNEL_IO_PERM_FAILURE, &ha->flags);
9620                 qla4xxx_abort_active_cmds(ha, DID_NO_CONNECT << 16);
9621                 return PCI_ERS_RESULT_DISCONNECT;
9622         }
9623         return PCI_ERS_RESULT_NEED_RESET;
9624 }
9625
9626 /**
9627  * qla4xxx_pci_mmio_enabled() - gets called if
9628  * qla4xxx_pci_error_detected() returns PCI_ERS_RESULT_CAN_RECOVER
9629  * and read/write to the device still works.
9630  * @pdev: PCI device pointer
9631  **/
9632 static pci_ers_result_t
9633 qla4xxx_pci_mmio_enabled(struct pci_dev *pdev)
9634 {
9635         struct scsi_qla_host *ha = pci_get_drvdata(pdev);
9636
9637         if (!is_aer_supported(ha))
9638                 return PCI_ERS_RESULT_NONE;
9639
9640         return PCI_ERS_RESULT_RECOVERED;
9641 }
9642
9643 static uint32_t qla4_8xxx_error_recovery(struct scsi_qla_host *ha)
9644 {
9645         uint32_t rval = QLA_ERROR;
9646         int fn;
9647         struct pci_dev *other_pdev = NULL;
9648
9649         ql4_printk(KERN_WARNING, ha, "scsi%ld: In %s\n", ha->host_no, __func__);
9650
9651         set_bit(DPC_RESET_ACTIVE, &ha->dpc_flags);
9652
9653         if (test_bit(AF_ONLINE, &ha->flags)) {
9654                 clear_bit(AF_ONLINE, &ha->flags);
9655                 clear_bit(AF_LINK_UP, &ha->flags);
9656                 iscsi_host_for_each_session(ha->host, qla4xxx_fail_session);
9657                 qla4xxx_process_aen(ha, FLUSH_DDB_CHANGED_AENS);
9658         }
9659
9660         fn = PCI_FUNC(ha->pdev->devfn);
9661         if (is_qla8022(ha)) {
9662                 while (fn > 0) {
9663                         fn--;
9664                         ql4_printk(KERN_INFO, ha, "scsi%ld: %s: Finding PCI device at func %x\n",
9665                                    ha->host_no, __func__, fn);
9666                         /* Get the pci device given the domain, bus,
9667                          * slot/function number */
9668                         other_pdev = pci_get_domain_bus_and_slot(
9669                                            pci_domain_nr(ha->pdev->bus),
9670                                            ha->pdev->bus->number,
9671                                            PCI_DEVFN(PCI_SLOT(ha->pdev->devfn),
9672                                            fn));
9673
9674                         if (!other_pdev)
9675                                 continue;
9676
9677                         if (atomic_read(&other_pdev->enable_cnt)) {
9678                                 ql4_printk(KERN_INFO, ha, "scsi%ld: %s: Found PCI func in enabled state%x\n",
9679                                            ha->host_no, __func__, fn);
9680                                 pci_dev_put(other_pdev);
9681                                 break;
9682                         }
9683                         pci_dev_put(other_pdev);
9684                 }
9685         } else {
9686                 /* this case is meant for ISP83xx/ISP84xx only */
9687                 if (qla4_83xx_can_perform_reset(ha)) {
9688                         /* reset fn as iSCSI is going to perform the reset */
9689                         fn = 0;
9690                 }
9691         }
9692
9693         /* The first function on the card, the reset owner will
9694          * start & initialize the firmware. The other functions
9695          * on the card will reset the firmware context
9696          */
9697         if (!fn) {
9698                 ql4_printk(KERN_INFO, ha, "scsi%ld: %s: devfn being reset "
9699                     "0x%x is the owner\n", ha->host_no, __func__,
9700                     ha->pdev->devfn);
9701
9702                 ha->isp_ops->idc_lock(ha);
9703                 qla4_8xxx_wr_direct(ha, QLA8XXX_CRB_DEV_STATE,
9704                                     QLA8XXX_DEV_COLD);
9705                 ha->isp_ops->idc_unlock(ha);
9706
9707                 rval = qla4_8xxx_update_idc_reg(ha);
9708                 if (rval == QLA_ERROR) {
9709                         ql4_printk(KERN_INFO, ha, "scsi%ld: %s: HW State: FAILED\n",
9710                                    ha->host_no, __func__);
9711                         ha->isp_ops->idc_lock(ha);
9712                         qla4_8xxx_wr_direct(ha, QLA8XXX_CRB_DEV_STATE,
9713                                             QLA8XXX_DEV_FAILED);
9714                         ha->isp_ops->idc_unlock(ha);
9715                         goto exit_error_recovery;
9716                 }
9717
9718                 clear_bit(AF_FW_RECOVERY, &ha->flags);
9719                 rval = qla4xxx_initialize_adapter(ha, RESET_ADAPTER);
9720
9721                 if (rval != QLA_SUCCESS) {
9722                         ql4_printk(KERN_INFO, ha, "scsi%ld: %s: HW State: "
9723                             "FAILED\n", ha->host_no, __func__);
9724                         qla4xxx_free_irqs(ha);
9725                         ha->isp_ops->idc_lock(ha);
9726                         qla4_8xxx_clear_drv_active(ha);
9727                         qla4_8xxx_wr_direct(ha, QLA8XXX_CRB_DEV_STATE,
9728                                             QLA8XXX_DEV_FAILED);
9729                         ha->isp_ops->idc_unlock(ha);
9730                 } else {
9731                         ql4_printk(KERN_INFO, ha, "scsi%ld: %s: HW State: "
9732                             "READY\n", ha->host_no, __func__);
9733                         ha->isp_ops->idc_lock(ha);
9734                         qla4_8xxx_wr_direct(ha, QLA8XXX_CRB_DEV_STATE,
9735                                             QLA8XXX_DEV_READY);
9736                         /* Clear driver state register */
9737                         qla4_8xxx_wr_direct(ha, QLA8XXX_CRB_DRV_STATE, 0);
9738                         qla4_8xxx_set_drv_active(ha);
9739                         ha->isp_ops->idc_unlock(ha);
9740                         ha->isp_ops->enable_intrs(ha);
9741                 }
9742         } else {
9743                 ql4_printk(KERN_INFO, ha, "scsi%ld: %s: devfn 0x%x is not "
9744                     "the reset owner\n", ha->host_no, __func__,
9745                     ha->pdev->devfn);
9746                 if ((qla4_8xxx_rd_direct(ha, QLA8XXX_CRB_DEV_STATE) ==
9747                      QLA8XXX_DEV_READY)) {
9748                         clear_bit(AF_FW_RECOVERY, &ha->flags);
9749                         rval = qla4xxx_initialize_adapter(ha, RESET_ADAPTER);
9750                         if (rval == QLA_SUCCESS)
9751                                 ha->isp_ops->enable_intrs(ha);
9752                         else
9753                                 qla4xxx_free_irqs(ha);
9754
9755                         ha->isp_ops->idc_lock(ha);
9756                         qla4_8xxx_set_drv_active(ha);
9757                         ha->isp_ops->idc_unlock(ha);
9758                 }
9759         }
9760 exit_error_recovery:
9761         clear_bit(DPC_RESET_ACTIVE, &ha->dpc_flags);
9762         return rval;
9763 }
9764
9765 static pci_ers_result_t
9766 qla4xxx_pci_slot_reset(struct pci_dev *pdev)
9767 {
9768         pci_ers_result_t ret = PCI_ERS_RESULT_DISCONNECT;
9769         struct scsi_qla_host *ha = pci_get_drvdata(pdev);
9770         int rc;
9771
9772         ql4_printk(KERN_WARNING, ha, "scsi%ld: %s: slot_reset\n",
9773             ha->host_no, __func__);
9774
9775         if (!is_aer_supported(ha))
9776                 return PCI_ERS_RESULT_NONE;
9777
9778         /* Restore the saved state of PCIe device -
9779          * BAR registers, PCI Config space, PCIX, MSI,
9780          * IOV states
9781          */
9782         pci_restore_state(pdev);
9783
9784         /* pci_restore_state() clears the saved_state flag of the device
9785          * save restored state which resets saved_state flag
9786          */
9787         pci_save_state(pdev);
9788
9789         /* Initialize device or resume if in suspended state */
9790         rc = pci_enable_device(pdev);
9791         if (rc) {
9792                 ql4_printk(KERN_WARNING, ha, "scsi%ld: %s: Can't re-enable "
9793                     "device after reset\n", ha->host_no, __func__);
9794                 goto exit_slot_reset;
9795         }
9796
9797         ha->isp_ops->disable_intrs(ha);
9798
9799         if (is_qla80XX(ha)) {
9800                 if (qla4_8xxx_error_recovery(ha) == QLA_SUCCESS) {
9801                         ret = PCI_ERS_RESULT_RECOVERED;
9802                         goto exit_slot_reset;
9803                 } else
9804                         goto exit_slot_reset;
9805         }
9806
9807 exit_slot_reset:
9808         ql4_printk(KERN_WARNING, ha, "scsi%ld: %s: Return=%x\n"
9809             "device after reset\n", ha->host_no, __func__, ret);
9810         return ret;
9811 }
9812
9813 static void
9814 qla4xxx_pci_resume(struct pci_dev *pdev)
9815 {
9816         struct scsi_qla_host *ha = pci_get_drvdata(pdev);
9817         int ret;
9818
9819         ql4_printk(KERN_WARNING, ha, "scsi%ld: %s: pci_resume\n",
9820             ha->host_no, __func__);
9821
9822         ret = qla4xxx_wait_for_hba_online(ha);
9823         if (ret != QLA_SUCCESS) {
9824                 ql4_printk(KERN_ERR, ha, "scsi%ld: %s: the device failed to "
9825                     "resume I/O from slot/link_reset\n", ha->host_no,
9826                      __func__);
9827         }
9828
9829         clear_bit(AF_EEH_BUSY, &ha->flags);
9830 }
9831
9832 static const struct pci_error_handlers qla4xxx_err_handler = {
9833         .error_detected = qla4xxx_pci_error_detected,
9834         .mmio_enabled = qla4xxx_pci_mmio_enabled,
9835         .slot_reset = qla4xxx_pci_slot_reset,
9836         .resume = qla4xxx_pci_resume,
9837 };
9838
9839 static struct pci_device_id qla4xxx_pci_tbl[] = {
9840         {
9841                 .vendor         = PCI_VENDOR_ID_QLOGIC,
9842                 .device         = PCI_DEVICE_ID_QLOGIC_ISP4010,
9843                 .subvendor      = PCI_ANY_ID,
9844                 .subdevice      = PCI_ANY_ID,
9845         },
9846         {
9847                 .vendor         = PCI_VENDOR_ID_QLOGIC,
9848                 .device         = PCI_DEVICE_ID_QLOGIC_ISP4022,
9849                 .subvendor      = PCI_ANY_ID,
9850                 .subdevice      = PCI_ANY_ID,
9851         },
9852         {
9853                 .vendor         = PCI_VENDOR_ID_QLOGIC,
9854                 .device         = PCI_DEVICE_ID_QLOGIC_ISP4032,
9855                 .subvendor      = PCI_ANY_ID,
9856                 .subdevice      = PCI_ANY_ID,
9857         },
9858         {
9859                 .vendor         = PCI_VENDOR_ID_QLOGIC,
9860                 .device         = PCI_DEVICE_ID_QLOGIC_ISP8022,
9861                 .subvendor      = PCI_ANY_ID,
9862                 .subdevice      = PCI_ANY_ID,
9863         },
9864         {
9865                 .vendor         = PCI_VENDOR_ID_QLOGIC,
9866                 .device         = PCI_DEVICE_ID_QLOGIC_ISP8324,
9867                 .subvendor      = PCI_ANY_ID,
9868                 .subdevice      = PCI_ANY_ID,
9869         },
9870         {
9871                 .vendor         = PCI_VENDOR_ID_QLOGIC,
9872                 .device         = PCI_DEVICE_ID_QLOGIC_ISP8042,
9873                 .subvendor      = PCI_ANY_ID,
9874                 .subdevice      = PCI_ANY_ID,
9875         },
9876         {0, 0},
9877 };
9878 MODULE_DEVICE_TABLE(pci, qla4xxx_pci_tbl);
9879
9880 static struct pci_driver qla4xxx_pci_driver = {
9881         .name           = DRIVER_NAME,
9882         .id_table       = qla4xxx_pci_tbl,
9883         .probe          = qla4xxx_probe_adapter,
9884         .remove         = qla4xxx_remove_adapter,
9885         .err_handler = &qla4xxx_err_handler,
9886 };
9887
9888 static int __init qla4xxx_module_init(void)
9889 {
9890         int ret;
9891
9892         if (ql4xqfulltracking)
9893                 qla4xxx_driver_template.track_queue_depth = 1;
9894
9895         /* Allocate cache for SRBs. */
9896         srb_cachep = kmem_cache_create("qla4xxx_srbs", sizeof(struct srb), 0,
9897                                        SLAB_HWCACHE_ALIGN, NULL);
9898         if (srb_cachep == NULL) {
9899                 printk(KERN_ERR
9900                        "%s: Unable to allocate SRB cache..."
9901                        "Failing load!\n", DRIVER_NAME);
9902                 ret = -ENOMEM;
9903                 goto no_srp_cache;
9904         }
9905
9906         /* Derive version string. */
9907         strcpy(qla4xxx_version_str, QLA4XXX_DRIVER_VERSION);
9908         if (ql4xextended_error_logging)
9909                 strcat(qla4xxx_version_str, "-debug");
9910
9911         qla4xxx_scsi_transport =
9912                 iscsi_register_transport(&qla4xxx_iscsi_transport);
9913         if (!qla4xxx_scsi_transport){
9914                 ret = -ENODEV;
9915                 goto release_srb_cache;
9916         }
9917
9918         ret = pci_register_driver(&qla4xxx_pci_driver);
9919         if (ret)
9920                 goto unregister_transport;
9921
9922         printk(KERN_INFO "QLogic iSCSI HBA Driver\n");
9923         return 0;
9924
9925 unregister_transport:
9926         iscsi_unregister_transport(&qla4xxx_iscsi_transport);
9927 release_srb_cache:
9928         kmem_cache_destroy(srb_cachep);
9929 no_srp_cache:
9930         return ret;
9931 }
9932
9933 static void __exit qla4xxx_module_exit(void)
9934 {
9935         pci_unregister_driver(&qla4xxx_pci_driver);
9936         iscsi_unregister_transport(&qla4xxx_iscsi_transport);
9937         kmem_cache_destroy(srb_cachep);
9938 }
9939
9940 module_init(qla4xxx_module_init);
9941 module_exit(qla4xxx_module_exit);
9942
9943 MODULE_AUTHOR("QLogic Corporation");
9944 MODULE_DESCRIPTION("QLogic iSCSI HBA Driver");
9945 MODULE_LICENSE("GPL");
9946 MODULE_VERSION(QLA4XXX_DRIVER_VERSION);