drivers/scsi/qla4xxx/ql4_os.c

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