drivers/scsi/qla4xxx/ql4_os.c

   1 /*
   2  * QLogic iSCSI HBA Driver
   3  * Copyright (c)  2003-2010 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
  22 /*
  23  * Driver version
  24  */
  25 static char qla4xxx_version_str[40];
  26
  27 /*
  28  * SRB allocation cache
  29  */
  30 static struct kmem_cache *srb_cachep;
  31
  32 /*
  33  * Module parameter information and variables
  34  */
  35 static int ql4xdisablesysfsboot = 1;
  36 module_param(ql4xdisablesysfsboot, int, S_IRUGO | S_IWUSR);
  37 MODULE_PARM_DESC(ql4xdisablesysfsboot,
  38                  " Set to disable exporting boot targets to sysfs.\n"
  39                  "\t\t  0 - Export boot targets\n"
  40                  "\t\t  1 - Do not export boot targets (Default)");
  41
  42 int ql4xdontresethba;
  43 module_param(ql4xdontresethba, int, S_IRUGO | S_IWUSR);
  44 MODULE_PARM_DESC(ql4xdontresethba,
  45                  " Don't reset the HBA for driver recovery.\n"
  46                  "\t\t  0 - It will reset HBA (Default)\n"
  47                  "\t\t  1 - It will NOT reset HBA");
  48
  49 int ql4xextended_error_logging;
  50 module_param(ql4xextended_error_logging, int, S_IRUGO | S_IWUSR);
  51 MODULE_PARM_DESC(ql4xextended_error_logging,
  52                  " Option to enable extended error logging.\n"
  53                  "\t\t  0 - no logging (Default)\n"
  54                  "\t\t  2 - debug logging");
  55
  56 int ql4xenablemsix = 1;
  57 module_param(ql4xenablemsix, int, S_IRUGO|S_IWUSR);
  58 MODULE_PARM_DESC(ql4xenablemsix,
  59                  " Set to enable MSI or MSI-X interrupt mechanism.\n"
  60                  "\t\t  0 = enable INTx interrupt mechanism.\n"
  61                  "\t\t  1 = enable MSI-X interrupt mechanism (Default).\n"
  62                  "\t\t  2 = enable MSI interrupt mechanism.");
  63
  64 #define QL4_DEF_QDEPTH 32
  65 static int ql4xmaxqdepth = QL4_DEF_QDEPTH;
  66 module_param(ql4xmaxqdepth, int, S_IRUGO | S_IWUSR);
  67 MODULE_PARM_DESC(ql4xmaxqdepth,
  68                  " Maximum queue depth to report for target devices.\n"
  69                  "\t\t  Default: 32.");
  70
  71 static int ql4xqfulltracking = 1;
  72 module_param(ql4xqfulltracking, int, S_IRUGO | S_IWUSR);
  73 MODULE_PARM_DESC(ql4xqfulltracking,
  74                  " Enable or disable dynamic tracking and adjustment of\n"
  75                  "\t\t scsi device queue depth.\n"
  76                  "\t\t  0 - Disable.\n"
  77                  "\t\t  1 - Enable. (Default)");
  78
  79 static int ql4xsess_recovery_tmo = QL4_SESS_RECOVERY_TMO;
  80 module_param(ql4xsess_recovery_tmo, int, S_IRUGO);
  81 MODULE_PARM_DESC(ql4xsess_recovery_tmo,
  82                 " Target Session Recovery Timeout.\n"
  83                 "\t\t  Default: 120 sec.");
  84
  85 int ql4xmdcapmask = 0x1F;
  86 module_param(ql4xmdcapmask, int, S_IRUGO);
  87 MODULE_PARM_DESC(ql4xmdcapmask,
  88                  " Set the Minidump driver capture mask level.\n"
  89                  "\t\t  Default is 0x1F.\n"
  90                  "\t\t  Can be set to 0x3, 0x7, 0xF, 0x1F, 0x3F, 0x7F");
  91
  92 int ql4xenablemd = 1;
  93 module_param(ql4xenablemd, int, S_IRUGO | S_IWUSR);
  94 MODULE_PARM_DESC(ql4xenablemd,
  95                  " Set to enable minidump.\n"
  96                  "\t\t  0 - disable minidump\n"
  97                  "\t\t  1 - enable minidump (Default)");
  98
  99 static int qla4xxx_wait_for_hba_online(struct scsi_qla_host *ha);
 100 /*
 101  * SCSI host template entry points
 102  */
 103 static void qla4xxx_config_dma_addressing(struct scsi_qla_host *ha);
 104
 105 /*
 106  * iSCSI template entry points
 107  */
 108 static int qla4xxx_session_get_param(struct iscsi_cls_session *cls_sess,
 109                                      enum iscsi_param param, char *buf);
 110 static int qla4xxx_conn_get_param(struct iscsi_cls_conn *conn,
 111                                   enum iscsi_param param, char *buf);
 112 static int qla4xxx_host_get_param(struct Scsi_Host *shost,
 113                                   enum iscsi_host_param param, char *buf);
 114 static int qla4xxx_iface_set_param(struct Scsi_Host *shost, void *data,
 115                                    uint32_t len);
 116 static int qla4xxx_get_iface_param(struct iscsi_iface *iface,
 117                                    enum iscsi_param_type param_type,
 118                                    int param, char *buf);
 119 static enum blk_eh_timer_return qla4xxx_eh_cmd_timed_out(struct scsi_cmnd *sc);
 120 static struct iscsi_endpoint *qla4xxx_ep_connect(struct Scsi_Host *shost,
 121                                                  struct sockaddr *dst_addr,
 122                                                  int non_blocking);
 123 static int qla4xxx_ep_poll(struct iscsi_endpoint *ep, int timeout_ms);
 124 static void qla4xxx_ep_disconnect(struct iscsi_endpoint *ep);
 125 static int qla4xxx_get_ep_param(struct iscsi_endpoint *ep,
 126                                 enum iscsi_param param, char *buf);
 127 static int qla4xxx_conn_start(struct iscsi_cls_conn *conn);
 128 static struct iscsi_cls_conn *
 129 qla4xxx_conn_create(struct iscsi_cls_session *cls_sess, uint32_t conn_idx);
 130 static int qla4xxx_conn_bind(struct iscsi_cls_session *cls_session,
 131                              struct iscsi_cls_conn *cls_conn,
 132                              uint64_t transport_fd, int is_leading);
 133 static void qla4xxx_conn_destroy(struct iscsi_cls_conn *conn);
 134 static struct iscsi_cls_session *
 135 qla4xxx_session_create(struct iscsi_endpoint *ep, uint16_t cmds_max,
 136                         uint16_t qdepth, uint32_t initial_cmdsn);
 137 static void qla4xxx_session_destroy(struct iscsi_cls_session *sess);
 138 static void qla4xxx_task_work(struct work_struct *wdata);
 139 static int qla4xxx_alloc_pdu(struct iscsi_task *, uint8_t);
 140 static int qla4xxx_task_xmit(struct iscsi_task *);
 141 static void qla4xxx_task_cleanup(struct iscsi_task *);
 142 static void qla4xxx_fail_session(struct iscsi_cls_session *cls_session);
 143 static void qla4xxx_conn_get_stats(struct iscsi_cls_conn *cls_conn,
 144                                    struct iscsi_stats *stats);
 145 static int qla4xxx_send_ping(struct Scsi_Host *shost, uint32_t iface_num,
 146                              uint32_t iface_type, uint32_t payload_size,
 147                              uint32_t pid, struct sockaddr *dst_addr);
 148 static int qla4xxx_get_chap_list(struct Scsi_Host *shost, uint16_t chap_tbl_idx,
 149                                  uint32_t *num_entries, char *buf);
 150 static int qla4xxx_delete_chap(struct Scsi_Host *shost, uint16_t chap_tbl_idx);
 151
 152 /*
 153  * SCSI host template entry points
 154  */
 155 static int qla4xxx_queuecommand(struct Scsi_Host *h, struct scsi_cmnd *cmd);
 156 static int qla4xxx_eh_abort(struct scsi_cmnd *cmd);
 157 static int qla4xxx_eh_device_reset(struct scsi_cmnd *cmd);
 158 static int qla4xxx_eh_target_reset(struct scsi_cmnd *cmd);
 159 static int qla4xxx_eh_host_reset(struct scsi_cmnd *cmd);
 160 static int qla4xxx_slave_alloc(struct scsi_device *device);
 161 static int qla4xxx_slave_configure(struct scsi_device *device);
 162 static void qla4xxx_slave_destroy(struct scsi_device *sdev);
 163 static umode_t ql4_attr_is_visible(int param_type, int param);
 164 static int qla4xxx_host_reset(struct Scsi_Host *shost, int reset_type);
 165 static int qla4xxx_change_queue_depth(struct scsi_device *sdev, int qdepth,
 166                                       int reason);
 167
 168 static struct qla4_8xxx_legacy_intr_set legacy_intr[] =
 169     QLA82XX_LEGACY_INTR_CONFIG;
 170
 171 static struct scsi_host_template qla4xxx_driver_template = {
 172         .module                 = THIS_MODULE,
 173         .name                   = DRIVER_NAME,
 174         .proc_name              = DRIVER_NAME,
 175         .queuecommand           = qla4xxx_queuecommand,
 176
 177         .eh_abort_handler       = qla4xxx_eh_abort,
 178         .eh_device_reset_handler = qla4xxx_eh_device_reset,
 179         .eh_target_reset_handler = qla4xxx_eh_target_reset,
 180         .eh_host_reset_handler  = qla4xxx_eh_host_reset,
 181         .eh_timed_out           = qla4xxx_eh_cmd_timed_out,
 182
 183         .slave_configure        = qla4xxx_slave_configure,
 184         .slave_alloc            = qla4xxx_slave_alloc,
 185         .slave_destroy          = qla4xxx_slave_destroy,
 186         .change_queue_depth     = qla4xxx_change_queue_depth,
 187
 188         .this_id                = -1,
 189         .cmd_per_lun            = 3,
 190         .use_clustering         = ENABLE_CLUSTERING,
 191         .sg_tablesize           = SG_ALL,
 192
 193         .max_sectors            = 0xFFFF,
 194         .shost_attrs            = qla4xxx_host_attrs,
 195         .host_reset             = qla4xxx_host_reset,
 196         .vendor_id              = SCSI_NL_VID_TYPE_PCI | PCI_VENDOR_ID_QLOGIC,
 197 };
 198
 199 static struct iscsi_transport qla4xxx_iscsi_transport = {
 200         .owner                  = THIS_MODULE,
 201         .name                   = DRIVER_NAME,
 202         .caps                   = CAP_TEXT_NEGO |
 203                                   CAP_DATA_PATH_OFFLOAD | CAP_HDRDGST |
 204                                   CAP_DATADGST | CAP_LOGIN_OFFLOAD |
 205                                   CAP_MULTI_R2T,
 206         .attr_is_visible        = ql4_attr_is_visible,
 207         .create_session         = qla4xxx_session_create,
 208         .destroy_session        = qla4xxx_session_destroy,
 209         .start_conn             = qla4xxx_conn_start,
 210         .create_conn            = qla4xxx_conn_create,
 211         .bind_conn              = qla4xxx_conn_bind,
 212         .stop_conn              = iscsi_conn_stop,
 213         .destroy_conn           = qla4xxx_conn_destroy,
 214         .set_param              = iscsi_set_param,
 215         .get_conn_param         = qla4xxx_conn_get_param,
 216         .get_session_param      = qla4xxx_session_get_param,
 217         .get_ep_param           = qla4xxx_get_ep_param,
 218         .ep_connect             = qla4xxx_ep_connect,
 219         .ep_poll                = qla4xxx_ep_poll,
 220         .ep_disconnect          = qla4xxx_ep_disconnect,
 221         .get_stats              = qla4xxx_conn_get_stats,
 222         .send_pdu               = iscsi_conn_send_pdu,
 223         .xmit_task              = qla4xxx_task_xmit,
 224         .cleanup_task           = qla4xxx_task_cleanup,
 225         .alloc_pdu              = qla4xxx_alloc_pdu,
 226
 227         .get_host_param         = qla4xxx_host_get_param,
 228         .set_iface_param        = qla4xxx_iface_set_param,
 229         .get_iface_param        = qla4xxx_get_iface_param,
 230         .bsg_request            = qla4xxx_bsg_request,
 231         .send_ping              = qla4xxx_send_ping,
 232         .get_chap               = qla4xxx_get_chap_list,
 233         .delete_chap            = qla4xxx_delete_chap,
 234 };
 235
 236 static struct scsi_transport_template *qla4xxx_scsi_transport;
 237
 238 static int qla4xxx_send_ping(struct Scsi_Host *shost, uint32_t iface_num,
 239                              uint32_t iface_type, uint32_t payload_size,
 240                              uint32_t pid, struct sockaddr *dst_addr)
 241 {
 242         struct scsi_qla_host *ha = to_qla_host(shost);
 243         struct sockaddr_in *addr;
 244         struct sockaddr_in6 *addr6;
 245         uint32_t options = 0;
 246         uint8_t ipaddr[IPv6_ADDR_LEN];
 247         int rval;
 248
 249         memset(ipaddr, 0, IPv6_ADDR_LEN);
 250         /* IPv4 to IPv4 */
 251         if ((iface_type == ISCSI_IFACE_TYPE_IPV4) &&
 252             (dst_addr->sa_family == AF_INET)) {
 253                 addr = (struct sockaddr_in *)dst_addr;
 254                 memcpy(ipaddr, &addr->sin_addr.s_addr, IP_ADDR_LEN);
 255                 DEBUG2(ql4_printk(KERN_INFO, ha, "%s: IPv4 Ping src: %pI4 "
 256                                   "dest: %pI4\n", __func__,
 257                                   &ha->ip_config.ip_address, ipaddr));
 258                 rval = qla4xxx_ping_iocb(ha, options, payload_size, pid,
 259                                          ipaddr);
 260                 if (rval)
 261                         rval = -EINVAL;
 262         } else if ((iface_type == ISCSI_IFACE_TYPE_IPV6) &&
 263                    (dst_addr->sa_family == AF_INET6)) {
 264                 /* IPv6 to IPv6 */
 265                 addr6 = (struct sockaddr_in6 *)dst_addr;
 266                 memcpy(ipaddr, &addr6->sin6_addr.in6_u.u6_addr8, IPv6_ADDR_LEN);
 267
 268                 options |= PING_IPV6_PROTOCOL_ENABLE;
 269
 270                 /* Ping using LinkLocal address */
 271                 if ((iface_num == 0) || (iface_num == 1)) {
 272                         DEBUG2(ql4_printk(KERN_INFO, ha, "%s: LinkLocal Ping "
 273                                           "src: %pI6 dest: %pI6\n", __func__,
 274                                           &ha->ip_config.ipv6_link_local_addr,
 275                                           ipaddr));
 276                         options |= PING_IPV6_LINKLOCAL_ADDR;
 277                         rval = qla4xxx_ping_iocb(ha, options, payload_size,
 278                                                  pid, ipaddr);
 279                 } else {
 280                         ql4_printk(KERN_WARNING, ha, "%s: iface num = %d "
 281                                    "not supported\n", __func__, iface_num);
 282                         rval = -ENOSYS;
 283                         goto exit_send_ping;
 284                 }
 285
 286                 /*
 287                  * If ping using LinkLocal address fails, try ping using
 288                  * IPv6 address
 289                  */
 290                 if (rval != QLA_SUCCESS) {
 291                         options &= ~PING_IPV6_LINKLOCAL_ADDR;
 292                         if (iface_num == 0) {
 293                                 options |= PING_IPV6_ADDR0;
 294                                 DEBUG2(ql4_printk(KERN_INFO, ha, "%s: IPv6 "
 295                                                   "Ping src: %pI6 "
 296                                                   "dest: %pI6\n", __func__,
 297                                                   &ha->ip_config.ipv6_addr0,
 298                                                   ipaddr));
 299                         } else if (iface_num == 1) {
 300                                 options |= PING_IPV6_ADDR1;
 301                                 DEBUG2(ql4_printk(KERN_INFO, ha, "%s: IPv6 "
 302                                                   "Ping src: %pI6 "
 303                                                   "dest: %pI6\n", __func__,
 304                                                   &ha->ip_config.ipv6_addr1,
 305                                                   ipaddr));
 306                         }
 307                         rval = qla4xxx_ping_iocb(ha, options, payload_size,
 308                                                  pid, ipaddr);
 309                         if (rval)
 310                                 rval = -EINVAL;
 311                 }
 312         } else
 313                 rval = -ENOSYS;
 314 exit_send_ping:
 315         return rval;
 316 }
 317
 318 static umode_t ql4_attr_is_visible(int param_type, int param)
 319 {
 320         switch (param_type) {
 321         case ISCSI_HOST_PARAM:
 322                 switch (param) {
 323                 case ISCSI_HOST_PARAM_HWADDRESS:
 324                 case ISCSI_HOST_PARAM_IPADDRESS:
 325                 case ISCSI_HOST_PARAM_INITIATOR_NAME:
 326                 case ISCSI_HOST_PARAM_PORT_STATE:
 327                 case ISCSI_HOST_PARAM_PORT_SPEED:
 328                         return S_IRUGO;
 329                 default:
 330                         return 0;
 331                 }
 332         case ISCSI_PARAM:
 333                 switch (param) {
 334                 case ISCSI_PARAM_PERSISTENT_ADDRESS:
 335                 case ISCSI_PARAM_PERSISTENT_PORT:
 336                 case ISCSI_PARAM_CONN_ADDRESS:
 337                 case ISCSI_PARAM_CONN_PORT:
 338                 case ISCSI_PARAM_TARGET_NAME:
 339                 case ISCSI_PARAM_TPGT:
 340                 case ISCSI_PARAM_TARGET_ALIAS:
 341                 case ISCSI_PARAM_MAX_BURST:
 342                 case ISCSI_PARAM_MAX_R2T:
 343                 case ISCSI_PARAM_FIRST_BURST:
 344                 case ISCSI_PARAM_MAX_RECV_DLENGTH:
 345                 case ISCSI_PARAM_MAX_XMIT_DLENGTH:
 346                 case ISCSI_PARAM_IFACE_NAME:
 347                 case ISCSI_PARAM_CHAP_OUT_IDX:
 348                 case ISCSI_PARAM_CHAP_IN_IDX:
 349                 case ISCSI_PARAM_USERNAME:
 350                 case ISCSI_PARAM_PASSWORD:
 351                 case ISCSI_PARAM_USERNAME_IN:
 352                 case ISCSI_PARAM_PASSWORD_IN:
 353                         return S_IRUGO;
 354                 default:
 355                         return 0;
 356                 }
 357         case ISCSI_NET_PARAM:
 358                 switch (param) {
 359                 case ISCSI_NET_PARAM_IPV4_ADDR:
 360                 case ISCSI_NET_PARAM_IPV4_SUBNET:
 361                 case ISCSI_NET_PARAM_IPV4_GW:
 362                 case ISCSI_NET_PARAM_IPV4_BOOTPROTO:
 363                 case ISCSI_NET_PARAM_IFACE_ENABLE:
 364                 case ISCSI_NET_PARAM_IPV6_LINKLOCAL:
 365                 case ISCSI_NET_PARAM_IPV6_ADDR:
 366                 case ISCSI_NET_PARAM_IPV6_ROUTER:
 367                 case ISCSI_NET_PARAM_IPV6_ADDR_AUTOCFG:
 368                 case ISCSI_NET_PARAM_IPV6_LINKLOCAL_AUTOCFG:
 369                 case ISCSI_NET_PARAM_VLAN_ID:
 370                 case ISCSI_NET_PARAM_VLAN_PRIORITY:
 371                 case ISCSI_NET_PARAM_VLAN_ENABLED:
 372                 case ISCSI_NET_PARAM_MTU:
 373                 case ISCSI_NET_PARAM_PORT:
 374                         return S_IRUGO;
 375                 default:
 376                         return 0;
 377                 }
 378         }
 379
 380         return 0;
 381 }
 382
 383 static int qla4xxx_get_chap_list(struct Scsi_Host *shost, uint16_t chap_tbl_idx,
 384                                   uint32_t *num_entries, char *buf)
 385 {
 386         struct scsi_qla_host *ha = to_qla_host(shost);
 387         struct ql4_chap_table *chap_table;
 388         struct iscsi_chap_rec *chap_rec;
 389         int max_chap_entries = 0;
 390         int valid_chap_entries = 0;
 391         int ret = 0, i;
 392
 393         if (is_qla8022(ha))
 394                 max_chap_entries = (ha->hw.flt_chap_size / 2) /
 395                                         sizeof(struct ql4_chap_table);
 396         else
 397                 max_chap_entries = MAX_CHAP_ENTRIES_40XX;
 398
 399         ql4_printk(KERN_INFO, ha, "%s: num_entries = %d, CHAP idx = %d\n",
 400                         __func__, *num_entries, chap_tbl_idx);
 401
 402         if (!buf) {
 403                 ret = -ENOMEM;
 404                 goto exit_get_chap_list;
 405         }
 406
 407         chap_rec = (struct iscsi_chap_rec *) buf;
 408         mutex_lock(&ha->chap_sem);
 409         for (i = chap_tbl_idx; i < max_chap_entries; i++) {
 410                 chap_table = (struct ql4_chap_table *)ha->chap_list + i;
 411                 if (chap_table->cookie !=
 412                     __constant_cpu_to_le16(CHAP_VALID_COOKIE))
 413                         continue;
 414
 415                 chap_rec->chap_tbl_idx = i;
 416                 strncpy(chap_rec->username, chap_table->name,
 417                         ISCSI_CHAP_AUTH_NAME_MAX_LEN);
 418                 strncpy(chap_rec->password, chap_table->secret,
 419                         QL4_CHAP_MAX_SECRET_LEN);
 420                 chap_rec->password_length = chap_table->secret_len;
 421
 422                 if (chap_table->flags & BIT_7) /* local */
 423                         chap_rec->chap_type = CHAP_TYPE_OUT;
 424
 425                 if (chap_table->flags & BIT_6) /* peer */
 426                         chap_rec->chap_type = CHAP_TYPE_IN;
 427
 428                 chap_rec++;
 429
 430                 valid_chap_entries++;
 431                 if (valid_chap_entries == *num_entries)
 432                         break;
 433                 else
 434                         continue;
 435         }
 436         mutex_unlock(&ha->chap_sem);
 437
 438 exit_get_chap_list:
 439         ql4_printk(KERN_INFO, ha, "%s: Valid CHAP Entries = %d\n",
 440                         __func__,  valid_chap_entries);
 441         *num_entries = valid_chap_entries;
 442         return ret;
 443 }
 444
 445 static int __qla4xxx_is_chap_active(struct device *dev, void *data)
 446 {
 447         int ret = 0;
 448         uint16_t *chap_tbl_idx = (uint16_t *) data;
 449         struct iscsi_cls_session *cls_session;
 450         struct iscsi_session *sess;
 451         struct ddb_entry *ddb_entry;
 452
 453         if (!iscsi_is_session_dev(dev))
 454                 goto exit_is_chap_active;
 455
 456         cls_session = iscsi_dev_to_session(dev);
 457         sess = cls_session->dd_data;
 458         ddb_entry = sess->dd_data;
 459
 460         if (iscsi_session_chkready(cls_session))
 461                 goto exit_is_chap_active;
 462
 463         if (ddb_entry->chap_tbl_idx == *chap_tbl_idx)
 464                 ret = 1;
 465
 466 exit_is_chap_active:
 467         return ret;
 468 }
 469
 470 static int qla4xxx_is_chap_active(struct Scsi_Host *shost,
 471                                   uint16_t chap_tbl_idx)
 472 {
 473         int ret = 0;
 474
 475         ret = device_for_each_child(&shost->shost_gendev, &chap_tbl_idx,
 476                                     __qla4xxx_is_chap_active);
 477
 478         return ret;
 479 }
 480
 481 static int qla4xxx_delete_chap(struct Scsi_Host *shost, uint16_t chap_tbl_idx)
 482 {
 483         struct scsi_qla_host *ha = to_qla_host(shost);
 484         struct ql4_chap_table *chap_table;
 485         dma_addr_t chap_dma;
 486         int max_chap_entries = 0;
 487         uint32_t offset = 0;
 488         uint32_t chap_size;
 489         int ret = 0;
 490
 491         chap_table = dma_pool_alloc(ha->chap_dma_pool, GFP_KERNEL, &chap_dma);
 492         if (chap_table == NULL)
 493                 return -ENOMEM;
 494
 495         memset(chap_table, 0, sizeof(struct ql4_chap_table));
 496
 497         if (is_qla8022(ha))
 498                 max_chap_entries = (ha->hw.flt_chap_size / 2) /
 499                                    sizeof(struct ql4_chap_table);
 500         else
 501                 max_chap_entries = MAX_CHAP_ENTRIES_40XX;
 502
 503         if (chap_tbl_idx > max_chap_entries) {
 504                 ret = -EINVAL;
 505                 goto exit_delete_chap;
 506         }
 507
 508         /* Check if chap index is in use.
 509          * If chap is in use don't delet chap entry */
 510         ret = qla4xxx_is_chap_active(shost, chap_tbl_idx);
 511         if (ret) {
 512                 ql4_printk(KERN_INFO, ha, "CHAP entry %d is in use, cannot "
 513                            "delete from flash\n", chap_tbl_idx);
 514                 ret = -EBUSY;
 515                 goto exit_delete_chap;
 516         }
 517
 518         chap_size = sizeof(struct ql4_chap_table);
 519         if (is_qla40XX(ha))
 520                 offset = FLASH_CHAP_OFFSET | (chap_tbl_idx * chap_size);
 521         else {
 522                 offset = FLASH_RAW_ACCESS_ADDR + (ha->hw.flt_region_chap << 2);
 523                 /* flt_chap_size is CHAP table size for both ports
 524                  * so divide it by 2 to calculate the offset for second port
 525                  */
 526                 if (ha->port_num == 1)
 527                         offset += (ha->hw.flt_chap_size / 2);
 528                 offset += (chap_tbl_idx * chap_size);
 529         }
 530
 531         ret = qla4xxx_get_flash(ha, chap_dma, offset, chap_size);
 532         if (ret != QLA_SUCCESS) {
 533                 ret = -EINVAL;
 534                 goto exit_delete_chap;
 535         }
 536
 537         DEBUG2(ql4_printk(KERN_INFO, ha, "Chap Cookie: x%x\n",
 538                           __le16_to_cpu(chap_table->cookie)));
 539
 540         if (__le16_to_cpu(chap_table->cookie) != CHAP_VALID_COOKIE) {
 541                 ql4_printk(KERN_ERR, ha, "No valid chap entry found\n");
 542                 goto exit_delete_chap;
 543         }
 544
 545         chap_table->cookie = __constant_cpu_to_le16(0xFFFF);
 546
 547         offset = FLASH_CHAP_OFFSET |
 548                         (chap_tbl_idx * sizeof(struct ql4_chap_table));
 549         ret = qla4xxx_set_flash(ha, chap_dma, offset, chap_size,
 550                                 FLASH_OPT_RMW_COMMIT);
 551         if (ret == QLA_SUCCESS && ha->chap_list) {
 552                 mutex_lock(&ha->chap_sem);
 553                 /* Update ha chap_list cache */
 554                 memcpy((struct ql4_chap_table *)ha->chap_list + chap_tbl_idx,
 555                         chap_table, sizeof(struct ql4_chap_table));
 556                 mutex_unlock(&ha->chap_sem);
 557         }
 558         if (ret != QLA_SUCCESS)
 559                 ret =  -EINVAL;
 560
 561 exit_delete_chap:
 562         dma_pool_free(ha->chap_dma_pool, chap_table, chap_dma);
 563         return ret;
 564 }
 565
 566 static int qla4xxx_get_iface_param(struct iscsi_iface *iface,
 567                                    enum iscsi_param_type param_type,
 568                                    int param, char *buf)
 569 {
 570         struct Scsi_Host *shost = iscsi_iface_to_shost(iface);
 571         struct scsi_qla_host *ha = to_qla_host(shost);
 572         int len = -ENOSYS;
 573
 574         if (param_type != ISCSI_NET_PARAM)
 575                 return -ENOSYS;
 576
 577         switch (param) {
 578         case ISCSI_NET_PARAM_IPV4_ADDR:
 579                 len = sprintf(buf, "%pI4\n", &ha->ip_config.ip_address);
 580                 break;
 581         case ISCSI_NET_PARAM_IPV4_SUBNET:
 582                 len = sprintf(buf, "%pI4\n", &ha->ip_config.subnet_mask);
 583                 break;
 584         case ISCSI_NET_PARAM_IPV4_GW:
 585                 len = sprintf(buf, "%pI4\n", &ha->ip_config.gateway);
 586                 break;
 587         case ISCSI_NET_PARAM_IFACE_ENABLE:
 588                 if (iface->iface_type == ISCSI_IFACE_TYPE_IPV4)
 589                         len = sprintf(buf, "%s\n",
 590                                       (ha->ip_config.ipv4_options &
 591                                        IPOPT_IPV4_PROTOCOL_ENABLE) ?
 592                                       "enabled" : "disabled");
 593                 else if (iface->iface_type == ISCSI_IFACE_TYPE_IPV6)
 594                         len = sprintf(buf, "%s\n",
 595                                       (ha->ip_config.ipv6_options &
 596                                        IPV6_OPT_IPV6_PROTOCOL_ENABLE) ?
 597                                        "enabled" : "disabled");
 598                 break;
 599         case ISCSI_NET_PARAM_IPV4_BOOTPROTO:
 600                 len = sprintf(buf, "%s\n",
 601                               (ha->ip_config.tcp_options & TCPOPT_DHCP_ENABLE) ?
 602                               "dhcp" : "static");
 603                 break;
 604         case ISCSI_NET_PARAM_IPV6_ADDR:
 605                 if (iface->iface_num == 0)
 606                         len = sprintf(buf, "%pI6\n", &ha->ip_config.ipv6_addr0);
 607                 if (iface->iface_num == 1)
 608                         len = sprintf(buf, "%pI6\n", &ha->ip_config.ipv6_addr1);
 609                 break;
 610         case ISCSI_NET_PARAM_IPV6_LINKLOCAL:
 611                 len = sprintf(buf, "%pI6\n",
 612                               &ha->ip_config.ipv6_link_local_addr);
 613                 break;
 614         case ISCSI_NET_PARAM_IPV6_ROUTER:
 615                 len = sprintf(buf, "%pI6\n",
 616                               &ha->ip_config.ipv6_default_router_addr);
 617                 break;
 618         case ISCSI_NET_PARAM_IPV6_ADDR_AUTOCFG:
 619                 len = sprintf(buf, "%s\n",
 620                               (ha->ip_config.ipv6_addl_options &
 621                                IPV6_ADDOPT_NEIGHBOR_DISCOVERY_ADDR_ENABLE) ?
 622                                "nd" : "static");
 623                 break;
 624         case ISCSI_NET_PARAM_IPV6_LINKLOCAL_AUTOCFG:
 625                 len = sprintf(buf, "%s\n",
 626                               (ha->ip_config.ipv6_addl_options &
 627                                IPV6_ADDOPT_AUTOCONFIG_LINK_LOCAL_ADDR) ?
 628                                "auto" : "static");
 629                 break;
 630         case ISCSI_NET_PARAM_VLAN_ID:
 631                 if (iface->iface_type == ISCSI_IFACE_TYPE_IPV4)
 632                         len = sprintf(buf, "%d\n",
 633                                       (ha->ip_config.ipv4_vlan_tag &
 634                                        ISCSI_MAX_VLAN_ID));
 635                 else if (iface->iface_type == ISCSI_IFACE_TYPE_IPV6)
 636                         len = sprintf(buf, "%d\n",
 637                                       (ha->ip_config.ipv6_vlan_tag &
 638                                        ISCSI_MAX_VLAN_ID));
 639                 break;
 640         case ISCSI_NET_PARAM_VLAN_PRIORITY:
 641                 if (iface->iface_type == ISCSI_IFACE_TYPE_IPV4)
 642                         len = sprintf(buf, "%d\n",
 643                                       ((ha->ip_config.ipv4_vlan_tag >> 13) &
 644                                         ISCSI_MAX_VLAN_PRIORITY));
 645                 else if (iface->iface_type == ISCSI_IFACE_TYPE_IPV6)
 646                         len = sprintf(buf, "%d\n",
 647                                       ((ha->ip_config.ipv6_vlan_tag >> 13) &
 648                                         ISCSI_MAX_VLAN_PRIORITY));
 649                 break;
 650         case ISCSI_NET_PARAM_VLAN_ENABLED:
 651                 if (iface->iface_type == ISCSI_IFACE_TYPE_IPV4)
 652                         len = sprintf(buf, "%s\n",
 653                                       (ha->ip_config.ipv4_options &
 654                                        IPOPT_VLAN_TAGGING_ENABLE) ?
 655                                        "enabled" : "disabled");
 656                 else if (iface->iface_type == ISCSI_IFACE_TYPE_IPV6)
 657                         len = sprintf(buf, "%s\n",
 658                                       (ha->ip_config.ipv6_options &
 659                                        IPV6_OPT_VLAN_TAGGING_ENABLE) ?
 660                                        "enabled" : "disabled");
 661                 break;
 662         case ISCSI_NET_PARAM_MTU:
 663                 len = sprintf(buf, "%d\n", ha->ip_config.eth_mtu_size);
 664                 break;
 665         case ISCSI_NET_PARAM_PORT:
 666                 if (iface->iface_type == ISCSI_IFACE_TYPE_IPV4)
 667                         len = sprintf(buf, "%d\n", ha->ip_config.ipv4_port);
 668                 else if (iface->iface_type == ISCSI_IFACE_TYPE_IPV6)
 669                         len = sprintf(buf, "%d\n", ha->ip_config.ipv6_port);
 670                 break;
 671         default:
 672                 len = -ENOSYS;
 673         }
 674
 675         return len;
 676 }
 677
 678 static struct iscsi_endpoint *
 679 qla4xxx_ep_connect(struct Scsi_Host *shost, struct sockaddr *dst_addr,
 680                    int non_blocking)
 681 {
 682         int ret;
 683         struct iscsi_endpoint *ep;
 684         struct qla_endpoint *qla_ep;
 685         struct scsi_qla_host *ha;
 686         struct sockaddr_in *addr;
 687         struct sockaddr_in6 *addr6;
 688
 689         DEBUG2(printk(KERN_INFO "Func: %s\n", __func__));
 690         if (!shost) {
 691                 ret = -ENXIO;
 692                 printk(KERN_ERR "%s: shost is NULL\n",
 693                        __func__);
 694                 return ERR_PTR(ret);
 695         }
 696
 697         ha = iscsi_host_priv(shost);
 698
 699         ep = iscsi_create_endpoint(sizeof(struct qla_endpoint));
 700         if (!ep) {
 701                 ret = -ENOMEM;
 702                 return ERR_PTR(ret);
 703         }
 704
 705         qla_ep = ep->dd_data;
 706         memset(qla_ep, 0, sizeof(struct qla_endpoint));
 707         if (dst_addr->sa_family == AF_INET) {
 708                 memcpy(&qla_ep->dst_addr, dst_addr, sizeof(struct sockaddr_in));
 709                 addr = (struct sockaddr_in *)&qla_ep->dst_addr;
 710                 DEBUG2(ql4_printk(KERN_INFO, ha, "%s: %pI4\n", __func__,
 711                                   (char *)&addr->sin_addr));
 712         } else if (dst_addr->sa_family == AF_INET6) {
 713                 memcpy(&qla_ep->dst_addr, dst_addr,
 714                        sizeof(struct sockaddr_in6));
 715                 addr6 = (struct sockaddr_in6 *)&qla_ep->dst_addr;
 716                 DEBUG2(ql4_printk(KERN_INFO, ha, "%s: %pI6\n", __func__,
 717                                   (char *)&addr6->sin6_addr));
 718         }
 719
 720         qla_ep->host = shost;
 721
 722         return ep;
 723 }
 724
 725 static int qla4xxx_ep_poll(struct iscsi_endpoint *ep, int timeout_ms)
 726 {
 727         struct qla_endpoint *qla_ep;
 728         struct scsi_qla_host *ha;
 729         int ret = 0;
 730
 731         DEBUG2(printk(KERN_INFO "Func: %s\n", __func__));
 732         qla_ep = ep->dd_data;
 733         ha = to_qla_host(qla_ep->host);
 734
 735         if (adapter_up(ha) && !test_bit(AF_BUILD_DDB_LIST, &ha->flags))
 736                 ret = 1;
 737
 738         return ret;
 739 }
 740
 741 static void qla4xxx_ep_disconnect(struct iscsi_endpoint *ep)
 742 {
 743         DEBUG2(printk(KERN_INFO "Func: %s\n", __func__));
 744         iscsi_destroy_endpoint(ep);
 745 }
 746
 747 static int qla4xxx_get_ep_param(struct iscsi_endpoint *ep,
 748                                 enum iscsi_param param,
 749                                 char *buf)
 750 {
 751         struct qla_endpoint *qla_ep = ep->dd_data;
 752         struct sockaddr *dst_addr;
 753
 754         DEBUG2(printk(KERN_INFO "Func: %s\n", __func__));
 755
 756         switch (param) {
 757         case ISCSI_PARAM_CONN_PORT:
 758         case ISCSI_PARAM_CONN_ADDRESS:
 759                 if (!qla_ep)
 760                         return -ENOTCONN;
 761
 762                 dst_addr = (struct sockaddr *)&qla_ep->dst_addr;
 763                 if (!dst_addr)
 764                         return -ENOTCONN;
 765
 766                 return iscsi_conn_get_addr_param((struct sockaddr_storage *)
 767                                                  &qla_ep->dst_addr, param, buf);
 768         default:
 769                 return -ENOSYS;
 770         }
 771 }
 772
 773 static void qla4xxx_conn_get_stats(struct iscsi_cls_conn *cls_conn,
 774                                    struct iscsi_stats *stats)
 775 {
 776         struct iscsi_session *sess;
 777         struct iscsi_cls_session *cls_sess;
 778         struct ddb_entry *ddb_entry;
 779         struct scsi_qla_host *ha;
 780         struct ql_iscsi_stats *ql_iscsi_stats;
 781         int stats_size;
 782         int ret;
 783         dma_addr_t iscsi_stats_dma;
 784
 785         DEBUG2(printk(KERN_INFO "Func: %s\n", __func__));
 786
 787         cls_sess = iscsi_conn_to_session(cls_conn);
 788         sess = cls_sess->dd_data;
 789         ddb_entry = sess->dd_data;
 790         ha = ddb_entry->ha;
 791
 792         stats_size = PAGE_ALIGN(sizeof(struct ql_iscsi_stats));
 793         /* Allocate memory */
 794         ql_iscsi_stats = dma_alloc_coherent(&ha->pdev->dev, stats_size,
 795                                             &iscsi_stats_dma, GFP_KERNEL);
 796         if (!ql_iscsi_stats) {
 797                 ql4_printk(KERN_ERR, ha,
 798                            "Unable to allocate memory for iscsi stats\n");
 799                 goto exit_get_stats;
 800         }
 801
 802         ret =  qla4xxx_get_mgmt_data(ha, ddb_entry->fw_ddb_index, stats_size,
 803                                      iscsi_stats_dma);
 804         if (ret != QLA_SUCCESS) {
 805                 ql4_printk(KERN_ERR, ha,
 806                            "Unable to retreive iscsi stats\n");
 807                 goto free_stats;
 808         }
 809
 810         /* octets */
 811         stats->txdata_octets = le64_to_cpu(ql_iscsi_stats->tx_data_octets);
 812         stats->rxdata_octets = le64_to_cpu(ql_iscsi_stats->rx_data_octets);
 813         /* xmit pdus */
 814         stats->noptx_pdus = le32_to_cpu(ql_iscsi_stats->tx_nopout_pdus);
 815         stats->scsicmd_pdus = le32_to_cpu(ql_iscsi_stats->tx_scsi_cmd_pdus);
 816         stats->tmfcmd_pdus = le32_to_cpu(ql_iscsi_stats->tx_tmf_cmd_pdus);
 817         stats->login_pdus = le32_to_cpu(ql_iscsi_stats->tx_login_cmd_pdus);
 818         stats->text_pdus = le32_to_cpu(ql_iscsi_stats->tx_text_cmd_pdus);
 819         stats->dataout_pdus = le32_to_cpu(ql_iscsi_stats->tx_scsi_write_pdus);
 820         stats->logout_pdus = le32_to_cpu(ql_iscsi_stats->tx_logout_cmd_pdus);
 821         stats->snack_pdus = le32_to_cpu(ql_iscsi_stats->tx_snack_req_pdus);
 822         /* recv pdus */
 823         stats->noprx_pdus = le32_to_cpu(ql_iscsi_stats->rx_nopin_pdus);
 824         stats->scsirsp_pdus = le32_to_cpu(ql_iscsi_stats->rx_scsi_resp_pdus);
 825         stats->tmfrsp_pdus = le32_to_cpu(ql_iscsi_stats->rx_tmf_resp_pdus);
 826         stats->textrsp_pdus = le32_to_cpu(ql_iscsi_stats->rx_text_resp_pdus);
 827         stats->datain_pdus = le32_to_cpu(ql_iscsi_stats->rx_scsi_read_pdus);
 828         stats->logoutrsp_pdus =
 829                         le32_to_cpu(ql_iscsi_stats->rx_logout_resp_pdus);
 830         stats->r2t_pdus = le32_to_cpu(ql_iscsi_stats->rx_r2t_pdus);
 831         stats->async_pdus = le32_to_cpu(ql_iscsi_stats->rx_async_pdus);
 832         stats->rjt_pdus = le32_to_cpu(ql_iscsi_stats->rx_reject_pdus);
 833
 834 free_stats:
 835         dma_free_coherent(&ha->pdev->dev, stats_size, ql_iscsi_stats,
 836                           iscsi_stats_dma);
 837 exit_get_stats:
 838         return;
 839 }
 840
 841 static enum blk_eh_timer_return qla4xxx_eh_cmd_timed_out(struct scsi_cmnd *sc)
 842 {
 843         struct iscsi_cls_session *session;
 844         struct iscsi_session *sess;
 845         unsigned long flags;
 846         enum blk_eh_timer_return ret = BLK_EH_NOT_HANDLED;
 847
 848         session = starget_to_session(scsi_target(sc->device));
 849         sess = session->dd_data;
 850
 851         spin_lock_irqsave(&session->lock, flags);
 852         if (session->state == ISCSI_SESSION_FAILED)
 853                 ret = BLK_EH_RESET_TIMER;
 854         spin_unlock_irqrestore(&session->lock, flags);
 855
 856         return ret;
 857 }
 858
 859 static void qla4xxx_set_port_speed(struct Scsi_Host *shost)
 860 {
 861         struct scsi_qla_host *ha = to_qla_host(shost);
 862         struct iscsi_cls_host *ihost = shost->shost_data;
 863         uint32_t speed = ISCSI_PORT_SPEED_UNKNOWN;
 864
 865         qla4xxx_get_firmware_state(ha);
 866
 867         switch (ha->addl_fw_state & 0x0F00) {
 868         case FW_ADDSTATE_LINK_SPEED_10MBPS:
 869                 speed = ISCSI_PORT_SPEED_10MBPS;
 870                 break;
 871         case FW_ADDSTATE_LINK_SPEED_100MBPS:
 872                 speed = ISCSI_PORT_SPEED_100MBPS;
 873                 break;
 874         case FW_ADDSTATE_LINK_SPEED_1GBPS:
 875                 speed = ISCSI_PORT_SPEED_1GBPS;
 876                 break;
 877         case FW_ADDSTATE_LINK_SPEED_10GBPS:
 878                 speed = ISCSI_PORT_SPEED_10GBPS;
 879                 break;
 880         }
 881         ihost->port_speed = speed;
 882 }
 883
 884 static void qla4xxx_set_port_state(struct Scsi_Host *shost)
 885 {
 886         struct scsi_qla_host *ha = to_qla_host(shost);
 887         struct iscsi_cls_host *ihost = shost->shost_data;
 888         uint32_t state = ISCSI_PORT_STATE_DOWN;
 889
 890         if (test_bit(AF_LINK_UP, &ha->flags))
 891                 state = ISCSI_PORT_STATE_UP;
 892
 893         ihost->port_state = state;
 894 }
 895
 896 static int qla4xxx_host_get_param(struct Scsi_Host *shost,
 897                                   enum iscsi_host_param param, char *buf)
 898 {
 899         struct scsi_qla_host *ha = to_qla_host(shost);
 900         int len;
 901
 902         switch (param) {
 903         case ISCSI_HOST_PARAM_HWADDRESS:
 904                 len = sysfs_format_mac(buf, ha->my_mac, MAC_ADDR_LEN);
 905                 break;
 906         case ISCSI_HOST_PARAM_IPADDRESS:
 907                 len = sprintf(buf, "%pI4\n", &ha->ip_config.ip_address);
 908                 break;
 909         case ISCSI_HOST_PARAM_INITIATOR_NAME:
 910                 len = sprintf(buf, "%s\n", ha->name_string);
 911                 break;
 912         case ISCSI_HOST_PARAM_PORT_STATE:
 913                 qla4xxx_set_port_state(shost);
 914                 len = sprintf(buf, "%s\n", iscsi_get_port_state_name(shost));
 915                 break;
 916         case ISCSI_HOST_PARAM_PORT_SPEED:
 917                 qla4xxx_set_port_speed(shost);
 918                 len = sprintf(buf, "%s\n", iscsi_get_port_speed_name(shost));
 919                 break;
 920         default:
 921                 return -ENOSYS;
 922         }
 923
 924         return len;
 925 }
 926
 927 static void qla4xxx_create_ipv4_iface(struct scsi_qla_host *ha)
 928 {
 929         if (ha->iface_ipv4)
 930                 return;
 931
 932         /* IPv4 */
 933         ha->iface_ipv4 = iscsi_create_iface(ha->host,
 934                                             &qla4xxx_iscsi_transport,
 935                                             ISCSI_IFACE_TYPE_IPV4, 0, 0);
 936         if (!ha->iface_ipv4)
 937                 ql4_printk(KERN_ERR, ha, "Could not create IPv4 iSCSI "
 938                            "iface0.\n");
 939 }
 940
 941 static void qla4xxx_create_ipv6_iface(struct scsi_qla_host *ha)
 942 {
 943         if (!ha->iface_ipv6_0)
 944                 /* IPv6 iface-0 */
 945                 ha->iface_ipv6_0 = iscsi_create_iface(ha->host,
 946                                                       &qla4xxx_iscsi_transport,
 947                                                       ISCSI_IFACE_TYPE_IPV6, 0,
 948                                                       0);
 949         if (!ha->iface_ipv6_0)
 950                 ql4_printk(KERN_ERR, ha, "Could not create IPv6 iSCSI "
 951                            "iface0.\n");
 952
 953         if (!ha->iface_ipv6_1)
 954                 /* IPv6 iface-1 */
 955                 ha->iface_ipv6_1 = iscsi_create_iface(ha->host,
 956                                                       &qla4xxx_iscsi_transport,
 957                                                       ISCSI_IFACE_TYPE_IPV6, 1,
 958                                                       0);
 959         if (!ha->iface_ipv6_1)
 960                 ql4_printk(KERN_ERR, ha, "Could not create IPv6 iSCSI "
 961                            "iface1.\n");
 962 }
 963
 964 static void qla4xxx_create_ifaces(struct scsi_qla_host *ha)
 965 {
 966         if (ha->ip_config.ipv4_options & IPOPT_IPV4_PROTOCOL_ENABLE)
 967                 qla4xxx_create_ipv4_iface(ha);
 968
 969         if (ha->ip_config.ipv6_options & IPV6_OPT_IPV6_PROTOCOL_ENABLE)
 970                 qla4xxx_create_ipv6_iface(ha);
 971 }
 972
 973 static void qla4xxx_destroy_ipv4_iface(struct scsi_qla_host *ha)
 974 {
 975         if (ha->iface_ipv4) {
 976                 iscsi_destroy_iface(ha->iface_ipv4);
 977                 ha->iface_ipv4 = NULL;
 978         }
 979 }
 980
 981 static void qla4xxx_destroy_ipv6_iface(struct scsi_qla_host *ha)
 982 {
 983         if (ha->iface_ipv6_0) {
 984                 iscsi_destroy_iface(ha->iface_ipv6_0);
 985                 ha->iface_ipv6_0 = NULL;
 986         }
 987         if (ha->iface_ipv6_1) {
 988                 iscsi_destroy_iface(ha->iface_ipv6_1);
 989                 ha->iface_ipv6_1 = NULL;
 990         }
 991 }
 992
 993 static void qla4xxx_destroy_ifaces(struct scsi_qla_host *ha)
 994 {
 995         qla4xxx_destroy_ipv4_iface(ha);
 996         qla4xxx_destroy_ipv6_iface(ha);
 997 }
 998
 999 static void qla4xxx_set_ipv6(struct scsi_qla_host *ha,
1000                              struct iscsi_iface_param_info *iface_param,
1001                              struct addr_ctrl_blk *init_fw_cb)
1002 {
1003         /*
1004          * iface_num 0 is valid for IPv6 Addr, linklocal, router, autocfg.
1005          * iface_num 1 is valid only for IPv6 Addr.
1006          */
1007         switch (iface_param->param) {
1008         case ISCSI_NET_PARAM_IPV6_ADDR:
1009                 if (iface_param->iface_num & 0x1)
1010                         /* IPv6 Addr 1 */
1011                         memcpy(init_fw_cb->ipv6_addr1, iface_param->value,
1012                                sizeof(init_fw_cb->ipv6_addr1));
1013                 else
1014                         /* IPv6 Addr 0 */
1015                         memcpy(init_fw_cb->ipv6_addr0, iface_param->value,
1016                                sizeof(init_fw_cb->ipv6_addr0));
1017                 break;
1018         case ISCSI_NET_PARAM_IPV6_LINKLOCAL:
1019                 if (iface_param->iface_num & 0x1)
1020                         break;
1021                 memcpy(init_fw_cb->ipv6_if_id, &iface_param->value[8],
1022                        sizeof(init_fw_cb->ipv6_if_id));
1023                 break;
1024         case ISCSI_NET_PARAM_IPV6_ROUTER:
1025                 if (iface_param->iface_num & 0x1)
1026                         break;
1027                 memcpy(init_fw_cb->ipv6_dflt_rtr_addr, iface_param->value,
1028                        sizeof(init_fw_cb->ipv6_dflt_rtr_addr));
1029                 break;
1030         case ISCSI_NET_PARAM_IPV6_ADDR_AUTOCFG:
1031                 /* Autocfg applies to even interface */
1032                 if (iface_param->iface_num & 0x1)
1033                         break;
1034
1035                 if (iface_param->value[0] == ISCSI_IPV6_AUTOCFG_DISABLE)
1036                         init_fw_cb->ipv6_addtl_opts &=
1037                                 cpu_to_le16(
1038                                   ~IPV6_ADDOPT_NEIGHBOR_DISCOVERY_ADDR_ENABLE);
1039                 else if (iface_param->value[0] == ISCSI_IPV6_AUTOCFG_ND_ENABLE)
1040                         init_fw_cb->ipv6_addtl_opts |=
1041                                 cpu_to_le16(
1042                                   IPV6_ADDOPT_NEIGHBOR_DISCOVERY_ADDR_ENABLE);
1043                 else
1044                         ql4_printk(KERN_ERR, ha, "Invalid autocfg setting for "
1045                                    "IPv6 addr\n");
1046                 break;
1047         case ISCSI_NET_PARAM_IPV6_LINKLOCAL_AUTOCFG:
1048                 /* Autocfg applies to even interface */
1049                 if (iface_param->iface_num & 0x1)
1050                         break;
1051
1052                 if (iface_param->value[0] ==
1053                     ISCSI_IPV6_LINKLOCAL_AUTOCFG_ENABLE)
1054                         init_fw_cb->ipv6_addtl_opts |= cpu_to_le16(
1055                                         IPV6_ADDOPT_AUTOCONFIG_LINK_LOCAL_ADDR);
1056                 else if (iface_param->value[0] ==
1057                          ISCSI_IPV6_LINKLOCAL_AUTOCFG_DISABLE)
1058                         init_fw_cb->ipv6_addtl_opts &= cpu_to_le16(
1059                                        ~IPV6_ADDOPT_AUTOCONFIG_LINK_LOCAL_ADDR);
1060                 else
1061                         ql4_printk(KERN_ERR, ha, "Invalid autocfg setting for "
1062                                    "IPv6 linklocal addr\n");
1063                 break;
1064         case ISCSI_NET_PARAM_IPV6_ROUTER_AUTOCFG:
1065                 /* Autocfg applies to even interface */
1066                 if (iface_param->iface_num & 0x1)
1067                         break;
1068
1069                 if (iface_param->value[0] == ISCSI_IPV6_ROUTER_AUTOCFG_ENABLE)
1070                         memset(init_fw_cb->ipv6_dflt_rtr_addr, 0,
1071                                sizeof(init_fw_cb->ipv6_dflt_rtr_addr));
1072                 break;
1073         case ISCSI_NET_PARAM_IFACE_ENABLE:
1074                 if (iface_param->value[0] == ISCSI_IFACE_ENABLE) {
1075                         init_fw_cb->ipv6_opts |=
1076                                 cpu_to_le16(IPV6_OPT_IPV6_PROTOCOL_ENABLE);
1077                         qla4xxx_create_ipv6_iface(ha);
1078                 } else {
1079                         init_fw_cb->ipv6_opts &=
1080                                 cpu_to_le16(~IPV6_OPT_IPV6_PROTOCOL_ENABLE &
1081                                             0xFFFF);
1082                         qla4xxx_destroy_ipv6_iface(ha);
1083                 }
1084                 break;
1085         case ISCSI_NET_PARAM_VLAN_TAG:
1086                 if (iface_param->len != sizeof(init_fw_cb->ipv6_vlan_tag))
1087                         break;
1088                 init_fw_cb->ipv6_vlan_tag =
1089                                 cpu_to_be16(*(uint16_t *)iface_param->value);
1090                 break;
1091         case ISCSI_NET_PARAM_VLAN_ENABLED:
1092                 if (iface_param->value[0] == ISCSI_VLAN_ENABLE)
1093                         init_fw_cb->ipv6_opts |=
1094                                 cpu_to_le16(IPV6_OPT_VLAN_TAGGING_ENABLE);
1095                 else
1096                         init_fw_cb->ipv6_opts &=
1097                                 cpu_to_le16(~IPV6_OPT_VLAN_TAGGING_ENABLE);
1098                 break;
1099         case ISCSI_NET_PARAM_MTU:
1100                 init_fw_cb->eth_mtu_size =
1101                                 cpu_to_le16(*(uint16_t *)iface_param->value);
1102                 break;
1103         case ISCSI_NET_PARAM_PORT:
1104                 /* Autocfg applies to even interface */
1105                 if (iface_param->iface_num & 0x1)
1106                         break;
1107
1108                 init_fw_cb->ipv6_port =
1109                                 cpu_to_le16(*(uint16_t *)iface_param->value);
1110                 break;
1111         default:
1112                 ql4_printk(KERN_ERR, ha, "Unknown IPv6 param = %d\n",
1113                            iface_param->param);
1114                 break;
1115         }
1116 }
1117
1118 static void qla4xxx_set_ipv4(struct scsi_qla_host *ha,
1119                              struct iscsi_iface_param_info *iface_param,
1120                              struct addr_ctrl_blk *init_fw_cb)
1121 {
1122         switch (iface_param->param) {
1123         case ISCSI_NET_PARAM_IPV4_ADDR:
1124                 memcpy(init_fw_cb->ipv4_addr, iface_param->value,
1125                        sizeof(init_fw_cb->ipv4_addr));
1126                 break;
1127         case ISCSI_NET_PARAM_IPV4_SUBNET:
1128                 memcpy(init_fw_cb->ipv4_subnet, iface_param->value,
1129                        sizeof(init_fw_cb->ipv4_subnet));
1130                 break;
1131         case ISCSI_NET_PARAM_IPV4_GW:
1132                 memcpy(init_fw_cb->ipv4_gw_addr, iface_param->value,
1133                        sizeof(init_fw_cb->ipv4_gw_addr));
1134                 break;
1135         case ISCSI_NET_PARAM_IPV4_BOOTPROTO:
1136                 if (iface_param->value[0] == ISCSI_BOOTPROTO_DHCP)
1137                         init_fw_cb->ipv4_tcp_opts |=
1138                                         cpu_to_le16(TCPOPT_DHCP_ENABLE);
1139                 else if (iface_param->value[0] == ISCSI_BOOTPROTO_STATIC)
1140                         init_fw_cb->ipv4_tcp_opts &=
1141                                         cpu_to_le16(~TCPOPT_DHCP_ENABLE);
1142                 else
1143                         ql4_printk(KERN_ERR, ha, "Invalid IPv4 bootproto\n");
1144                 break;
1145         case ISCSI_NET_PARAM_IFACE_ENABLE:
1146                 if (iface_param->value[0] == ISCSI_IFACE_ENABLE) {
1147                         init_fw_cb->ipv4_ip_opts |=
1148                                 cpu_to_le16(IPOPT_IPV4_PROTOCOL_ENABLE);
1149                         qla4xxx_create_ipv4_iface(ha);
1150                 } else {
1151                         init_fw_cb->ipv4_ip_opts &=
1152                                 cpu_to_le16(~IPOPT_IPV4_PROTOCOL_ENABLE &
1153                                             0xFFFF);
1154                         qla4xxx_destroy_ipv4_iface(ha);
1155                 }
1156                 break;
1157         case ISCSI_NET_PARAM_VLAN_TAG:
1158                 if (iface_param->len != sizeof(init_fw_cb->ipv4_vlan_tag))
1159                         break;
1160                 init_fw_cb->ipv4_vlan_tag =
1161                                 cpu_to_be16(*(uint16_t *)iface_param->value);
1162                 break;
1163         case ISCSI_NET_PARAM_VLAN_ENABLED:
1164                 if (iface_param->value[0] == ISCSI_VLAN_ENABLE)
1165                         init_fw_cb->ipv4_ip_opts |=
1166                                         cpu_to_le16(IPOPT_VLAN_TAGGING_ENABLE);
1167                 else
1168                         init_fw_cb->ipv4_ip_opts &=
1169                                         cpu_to_le16(~IPOPT_VLAN_TAGGING_ENABLE);
1170                 break;
1171         case ISCSI_NET_PARAM_MTU:
1172                 init_fw_cb->eth_mtu_size =
1173                                 cpu_to_le16(*(uint16_t *)iface_param->value);
1174                 break;
1175         case ISCSI_NET_PARAM_PORT:
1176                 init_fw_cb->ipv4_port =
1177                                 cpu_to_le16(*(uint16_t *)iface_param->value);
1178                 break;
1179         default:
1180                 ql4_printk(KERN_ERR, ha, "Unknown IPv4 param = %d\n",
1181                            iface_param->param);
1182                 break;
1183         }
1184 }
1185
1186 static void
1187 qla4xxx_initcb_to_acb(struct addr_ctrl_blk *init_fw_cb)
1188 {
1189         struct addr_ctrl_blk_def *acb;
1190         acb = (struct addr_ctrl_blk_def *)init_fw_cb;
1191         memset(acb->reserved1, 0, sizeof(acb->reserved1));
1192         memset(acb->reserved2, 0, sizeof(acb->reserved2));
1193         memset(acb->reserved3, 0, sizeof(acb->reserved3));
1194         memset(acb->reserved4, 0, sizeof(acb->reserved4));
1195         memset(acb->reserved5, 0, sizeof(acb->reserved5));
1196         memset(acb->reserved6, 0, sizeof(acb->reserved6));
1197         memset(acb->reserved7, 0, sizeof(acb->reserved7));
1198         memset(acb->reserved8, 0, sizeof(acb->reserved8));
1199         memset(acb->reserved9, 0, sizeof(acb->reserved9));
1200         memset(acb->reserved10, 0, sizeof(acb->reserved10));
1201         memset(acb->reserved11, 0, sizeof(acb->reserved11));
1202         memset(acb->reserved12, 0, sizeof(acb->reserved12));
1203         memset(acb->reserved13, 0, sizeof(acb->reserved13));
1204         memset(acb->reserved14, 0, sizeof(acb->reserved14));
1205         memset(acb->reserved15, 0, sizeof(acb->reserved15));
1206 }
1207
1208 static int
1209 qla4xxx_iface_set_param(struct Scsi_Host *shost, void *data, uint32_t len)
1210 {
1211         struct scsi_qla_host *ha = to_qla_host(shost);
1212         int rval = 0;
1213         struct iscsi_iface_param_info *iface_param = NULL;
1214         struct addr_ctrl_blk *init_fw_cb = NULL;
1215         dma_addr_t init_fw_cb_dma;
1216         uint32_t mbox_cmd[MBOX_REG_COUNT];
1217         uint32_t mbox_sts[MBOX_REG_COUNT];
1218         uint32_t rem = len;
1219         struct nlattr *attr;
1220
1221         init_fw_cb = dma_alloc_coherent(&ha->pdev->dev,
1222                                         sizeof(struct addr_ctrl_blk),
1223                                         &init_fw_cb_dma, GFP_KERNEL);
1224         if (!init_fw_cb) {
1225                 ql4_printk(KERN_ERR, ha, "%s: Unable to alloc init_cb\n",
1226                            __func__);
1227                 return -ENOMEM;
1228         }
1229
1230         memset(init_fw_cb, 0, sizeof(struct addr_ctrl_blk));
1231         memset(&mbox_cmd, 0, sizeof(mbox_cmd));
1232         memset(&mbox_sts, 0, sizeof(mbox_sts));
1233
1234         if (qla4xxx_get_ifcb(ha, &mbox_cmd[0], &mbox_sts[0], init_fw_cb_dma)) {
1235                 ql4_printk(KERN_ERR, ha, "%s: get ifcb failed\n", __func__);
1236                 rval = -EIO;
1237                 goto exit_init_fw_cb;
1238         }
1239
1240         nla_for_each_attr(attr, data, len, rem) {
1241                 iface_param = nla_data(attr);
1242
1243                 if (iface_param->param_type != ISCSI_NET_PARAM)
1244                         continue;
1245
1246                 switch (iface_param->iface_type) {
1247                 case ISCSI_IFACE_TYPE_IPV4:
1248                         switch (iface_param->iface_num) {
1249                         case 0:
1250                                 qla4xxx_set_ipv4(ha, iface_param, init_fw_cb);
1251                                 break;
1252                         default:
1253                                 /* Cannot have more than one IPv4 interface */
1254                                 ql4_printk(KERN_ERR, ha, "Invalid IPv4 iface "
1255                                            "number = %d\n",
1256                                            iface_param->iface_num);
1257                                 break;
1258                         }
1259                         break;
1260                 case ISCSI_IFACE_TYPE_IPV6:
1261                         switch (iface_param->iface_num) {
1262                         case 0:
1263                         case 1:
1264                                 qla4xxx_set_ipv6(ha, iface_param, init_fw_cb);
1265                                 break;
1266                         default:
1267                                 /* Cannot have more than two IPv6 interface */
1268                                 ql4_printk(KERN_ERR, ha, "Invalid IPv6 iface "
1269                                            "number = %d\n",
1270                                            iface_param->iface_num);
1271                                 break;
1272                         }
1273                         break;
1274                 default:
1275                         ql4_printk(KERN_ERR, ha, "Invalid iface type\n");
1276                         break;
1277                 }
1278         }
1279
1280         init_fw_cb->cookie = cpu_to_le32(0x11BEAD5A);
1281
1282         rval = qla4xxx_set_flash(ha, init_fw_cb_dma, FLASH_SEGMENT_IFCB,
1283                                  sizeof(struct addr_ctrl_blk),
1284                                  FLASH_OPT_RMW_COMMIT);
1285         if (rval != QLA_SUCCESS) {
1286                 ql4_printk(KERN_ERR, ha, "%s: set flash mbx failed\n",
1287                            __func__);
1288                 rval = -EIO;
1289                 goto exit_init_fw_cb;
1290         }
1291
1292         rval = qla4xxx_disable_acb(ha);
1293         if (rval != QLA_SUCCESS) {
1294                 ql4_printk(KERN_ERR, ha, "%s: disable acb mbx failed\n",
1295                            __func__);
1296                 rval = -EIO;
1297                 goto exit_init_fw_cb;
1298         }
1299
1300         wait_for_completion_timeout(&ha->disable_acb_comp,
1301                                     DISABLE_ACB_TOV * HZ);
1302
1303         qla4xxx_initcb_to_acb(init_fw_cb);
1304
1305         rval = qla4xxx_set_acb(ha, &mbox_cmd[0], &mbox_sts[0], init_fw_cb_dma);
1306         if (rval != QLA_SUCCESS) {
1307                 ql4_printk(KERN_ERR, ha, "%s: set acb mbx failed\n",
1308                            __func__);
1309                 rval = -EIO;
1310                 goto exit_init_fw_cb;
1311         }
1312
1313         memset(init_fw_cb, 0, sizeof(struct addr_ctrl_blk));
1314         qla4xxx_update_local_ifcb(ha, &mbox_cmd[0], &mbox_sts[0], init_fw_cb,
1315                                   init_fw_cb_dma);
1316
1317 exit_init_fw_cb:
1318         dma_free_coherent(&ha->pdev->dev, sizeof(struct addr_ctrl_blk),
1319                           init_fw_cb, init_fw_cb_dma);
1320
1321         return rval;
1322 }
1323
1324 static int qla4xxx_session_get_param(struct iscsi_cls_session *cls_sess,
1325                                      enum iscsi_param param, char *buf)
1326 {
1327         struct iscsi_session *sess = cls_sess->dd_data;
1328         struct ddb_entry *ddb_entry = sess->dd_data;
1329         struct scsi_qla_host *ha = ddb_entry->ha;
1330         int rval, len;
1331         uint16_t idx;
1332
1333         switch (param) {
1334         case ISCSI_PARAM_CHAP_IN_IDX:
1335                 rval = qla4xxx_get_chap_index(ha, sess->username_in,
1336                                               sess->password_in, BIDI_CHAP,
1337                                               &idx);
1338                 if (rval)
1339                         return -EINVAL;
1340
1341                 len = sprintf(buf, "%hu\n", idx);
1342                 break;
1343         case ISCSI_PARAM_CHAP_OUT_IDX:
1344                 rval = qla4xxx_get_chap_index(ha, sess->username,
1345                                               sess->password, LOCAL_CHAP,
1346                                               &idx);
1347                 if (rval)
1348                         return -EINVAL;
1349
1350                 len = sprintf(buf, "%hu\n", idx);
1351                 break;
1352         default:
1353                 return iscsi_session_get_param(cls_sess, param, buf);
1354         }
1355
1356         return len;
1357 }
1358
1359 static int qla4xxx_conn_get_param(struct iscsi_cls_conn *cls_conn,
1360                                   enum iscsi_param param, char *buf)
1361 {
1362         struct iscsi_conn *conn;
1363         struct qla_conn *qla_conn;
1364         struct sockaddr *dst_addr;
1365         int len = 0;
1366
1367         conn = cls_conn->dd_data;
1368         qla_conn = conn->dd_data;
1369         dst_addr = (struct sockaddr *)&qla_conn->qla_ep->dst_addr;
1370
1371         switch (param) {
1372         case ISCSI_PARAM_CONN_PORT:
1373         case ISCSI_PARAM_CONN_ADDRESS:
1374                 return iscsi_conn_get_addr_param((struct sockaddr_storage *)
1375                                                  dst_addr, param, buf);
1376         default:
1377                 return iscsi_conn_get_param(cls_conn, param, buf);
1378         }
1379
1380         return len;
1381
1382 }
1383
1384 int qla4xxx_get_ddb_index(struct scsi_qla_host *ha, uint16_t *ddb_index)
1385 {
1386         uint32_t mbx_sts = 0;
1387         uint16_t tmp_ddb_index;
1388         int ret;
1389
1390 get_ddb_index:
1391         tmp_ddb_index = find_first_zero_bit(ha->ddb_idx_map, MAX_DDB_ENTRIES);
1392
1393         if (tmp_ddb_index >= MAX_DDB_ENTRIES) {
1394                 DEBUG2(ql4_printk(KERN_INFO, ha,
1395                                   "Free DDB index not available\n"));
1396                 ret = QLA_ERROR;
1397                 goto exit_get_ddb_index;
1398         }
1399
1400         if (test_and_set_bit(tmp_ddb_index, ha->ddb_idx_map))
1401                 goto get_ddb_index;
1402
1403         DEBUG2(ql4_printk(KERN_INFO, ha,
1404                           "Found a free DDB index at %d\n", tmp_ddb_index));
1405         ret = qla4xxx_req_ddb_entry(ha, tmp_ddb_index, &mbx_sts);
1406         if (ret == QLA_ERROR) {
1407                 if (mbx_sts == MBOX_STS_COMMAND_ERROR) {
1408                         ql4_printk(KERN_INFO, ha,
1409                                    "DDB index = %d not available trying next\n",
1410                                    tmp_ddb_index);
1411                         goto get_ddb_index;
1412                 }
1413                 DEBUG2(ql4_printk(KERN_INFO, ha,
1414                                   "Free FW DDB not available\n"));
1415         }
1416
1417         *ddb_index = tmp_ddb_index;
1418
1419 exit_get_ddb_index:
1420         return ret;
1421 }
1422
1423 static int qla4xxx_match_ipaddress(struct scsi_qla_host *ha,
1424                                    struct ddb_entry *ddb_entry,
1425                                    char *existing_ipaddr,
1426                                    char *user_ipaddr)
1427 {
1428         uint8_t dst_ipaddr[IPv6_ADDR_LEN];
1429         char formatted_ipaddr[DDB_IPADDR_LEN];
1430         int status = QLA_SUCCESS, ret = 0;
1431
1432         if (ddb_entry->fw_ddb_entry.options & DDB_OPT_IPV6_DEVICE) {
1433                 ret = in6_pton(user_ipaddr, strlen(user_ipaddr), dst_ipaddr,
1434                                '\0', NULL);
1435                 if (ret == 0) {
1436                         status = QLA_ERROR;
1437                         goto out_match;
1438                 }
1439                 ret = sprintf(formatted_ipaddr, "%pI6", dst_ipaddr);
1440         } else {
1441                 ret = in4_pton(user_ipaddr, strlen(user_ipaddr), dst_ipaddr,
1442                                '\0', NULL);
1443                 if (ret == 0) {
1444                         status = QLA_ERROR;
1445                         goto out_match;
1446                 }
1447                 ret = sprintf(formatted_ipaddr, "%pI4", dst_ipaddr);
1448         }
1449
1450         if (strcmp(existing_ipaddr, formatted_ipaddr))
1451                 status = QLA_ERROR;
1452
1453 out_match:
1454         return status;
1455 }
1456
1457 static int qla4xxx_match_fwdb_session(struct scsi_qla_host *ha,
1458                                       struct iscsi_cls_conn *cls_conn)
1459 {
1460         int idx = 0, max_ddbs, rval;
1461         struct iscsi_cls_session *cls_sess = iscsi_conn_to_session(cls_conn);
1462         struct iscsi_session *sess, *existing_sess;
1463         struct iscsi_conn *conn, *existing_conn;
1464         struct ddb_entry *ddb_entry;
1465
1466         sess = cls_sess->dd_data;
1467         conn = cls_conn->dd_data;
1468
1469         if (sess->targetname == NULL ||
1470             conn->persistent_address == NULL ||
1471             conn->persistent_port == 0)
1472                 return QLA_ERROR;
1473
1474         max_ddbs =  is_qla40XX(ha) ? MAX_DEV_DB_ENTRIES_40XX :
1475                                      MAX_DEV_DB_ENTRIES;
1476
1477         for (idx = 0; idx < max_ddbs; idx++) {
1478                 ddb_entry = qla4xxx_lookup_ddb_by_fw_index(ha, idx);
1479                 if (ddb_entry == NULL)
1480                         continue;
1481
1482                 if (ddb_entry->ddb_type != FLASH_DDB)
1483                         continue;
1484
1485                 existing_sess = ddb_entry->sess->dd_data;
1486                 existing_conn = ddb_entry->conn->dd_data;
1487
1488                 if (existing_sess->targetname == NULL ||
1489                     existing_conn->persistent_address == NULL ||
1490                     existing_conn->persistent_port == 0)
1491                         continue;
1492
1493                 DEBUG2(ql4_printk(KERN_INFO, ha,
1494                                   "IQN = %s User IQN = %s\n",
1495                                   existing_sess->targetname,
1496                                   sess->targetname));
1497
1498                 DEBUG2(ql4_printk(KERN_INFO, ha,
1499                                   "IP = %s User IP = %s\n",
1500                                   existing_conn->persistent_address,
1501                                   conn->persistent_address));
1502
1503                 DEBUG2(ql4_printk(KERN_INFO, ha,
1504                                   "Port = %d User Port = %d\n",
1505                                   existing_conn->persistent_port,
1506                                   conn->persistent_port));
1507
1508                 if (strcmp(existing_sess->targetname, sess->targetname))
1509                         continue;
1510                 rval = qla4xxx_match_ipaddress(ha, ddb_entry,
1511                                         existing_conn->persistent_address,
1512                                         conn->persistent_address);
1513                 if (rval == QLA_ERROR)
1514                         continue;
1515                 if (existing_conn->persistent_port != conn->persistent_port)
1516                         continue;
1517                 break;
1518         }
1519
1520         if (idx == max_ddbs)
1521                 return QLA_ERROR;
1522
1523         DEBUG2(ql4_printk(KERN_INFO, ha,
1524                           "Match found in fwdb sessions\n"));
1525         return QLA_SUCCESS;
1526 }
1527
1528 static struct iscsi_cls_session *
1529 qla4xxx_session_create(struct iscsi_endpoint *ep,
1530                         uint16_t cmds_max, uint16_t qdepth,
1531                         uint32_t initial_cmdsn)
1532 {
1533         struct iscsi_cls_session *cls_sess;
1534         struct scsi_qla_host *ha;
1535         struct qla_endpoint *qla_ep;
1536         struct ddb_entry *ddb_entry;
1537         uint16_t ddb_index;
1538         struct iscsi_session *sess;
1539         struct sockaddr *dst_addr;
1540         int ret;
1541
1542         DEBUG2(printk(KERN_INFO "Func: %s\n", __func__));
1543         if (!ep) {
1544                 printk(KERN_ERR "qla4xxx: missing ep.\n");
1545                 return NULL;
1546         }
1547
1548         qla_ep = ep->dd_data;
1549         dst_addr = (struct sockaddr *)&qla_ep->dst_addr;
1550         ha = to_qla_host(qla_ep->host);
1551
1552         ret = qla4xxx_get_ddb_index(ha, &ddb_index);
1553         if (ret == QLA_ERROR)
1554                 return NULL;
1555
1556         cls_sess = iscsi_session_setup(&qla4xxx_iscsi_transport, qla_ep->host,
1557                                        cmds_max, sizeof(struct ddb_entry),
1558                                        sizeof(struct ql4_task_data),
1559                                        initial_cmdsn, ddb_index);
1560         if (!cls_sess)
1561                 return NULL;
1562
1563         sess = cls_sess->dd_data;
1564         ddb_entry = sess->dd_data;
1565         ddb_entry->fw_ddb_index = ddb_index;
1566         ddb_entry->fw_ddb_device_state = DDB_DS_NO_CONNECTION_ACTIVE;
1567         ddb_entry->ha = ha;
1568         ddb_entry->sess = cls_sess;
1569         ddb_entry->unblock_sess = qla4xxx_unblock_ddb;
1570         ddb_entry->ddb_change = qla4xxx_ddb_change;
1571         cls_sess->recovery_tmo = ql4xsess_recovery_tmo;
1572         ha->fw_ddb_index_map[ddb_entry->fw_ddb_index] = ddb_entry;
1573         ha->tot_ddbs++;
1574
1575         return cls_sess;
1576 }
1577
1578 static void qla4xxx_session_destroy(struct iscsi_cls_session *cls_sess)
1579 {
1580         struct iscsi_session *sess;
1581         struct ddb_entry *ddb_entry;
1582         struct scsi_qla_host *ha;
1583         unsigned long flags, wtime;
1584         struct dev_db_entry *fw_ddb_entry = NULL;
1585         dma_addr_t fw_ddb_entry_dma;
1586         uint32_t ddb_state;
1587         int ret;
1588
1589         DEBUG2(printk(KERN_INFO "Func: %s\n", __func__));
1590         sess = cls_sess->dd_data;
1591         ddb_entry = sess->dd_data;
1592         ha = ddb_entry->ha;
1593
1594         fw_ddb_entry = dma_alloc_coherent(&ha->pdev->dev, sizeof(*fw_ddb_entry),
1595                                           &fw_ddb_entry_dma, GFP_KERNEL);
1596         if (!fw_ddb_entry) {
1597                 ql4_printk(KERN_ERR, ha,
1598                            "%s: Unable to allocate dma buffer\n", __func__);
1599                 goto destroy_session;
1600         }
1601
1602         wtime = jiffies + (HZ * LOGOUT_TOV);
1603         do {
1604                 ret = qla4xxx_get_fwddb_entry(ha, ddb_entry->fw_ddb_index,
1605                                               fw_ddb_entry, fw_ddb_entry_dma,
1606                                               NULL, NULL, &ddb_state, NULL,
1607                                               NULL, NULL);
1608                 if (ret == QLA_ERROR)
1609                         goto destroy_session;
1610
1611                 if ((ddb_state == DDB_DS_NO_CONNECTION_ACTIVE) ||
1612                     (ddb_state == DDB_DS_SESSION_FAILED))
1613                         goto destroy_session;
1614
1615                 schedule_timeout_uninterruptible(HZ);
1616         } while ((time_after(wtime, jiffies)));
1617
1618 destroy_session:
1619         qla4xxx_clear_ddb_entry(ha, ddb_entry->fw_ddb_index);
1620
1621         spin_lock_irqsave(&ha->hardware_lock, flags);
1622         qla4xxx_free_ddb(ha, ddb_entry);
1623         spin_unlock_irqrestore(&ha->hardware_lock, flags);
1624
1625         iscsi_session_teardown(cls_sess);
1626
1627         if (fw_ddb_entry)
1628                 dma_free_coherent(&ha->pdev->dev, sizeof(*fw_ddb_entry),
1629                                   fw_ddb_entry, fw_ddb_entry_dma);
1630 }
1631
1632 static struct iscsi_cls_conn *
1633 qla4xxx_conn_create(struct iscsi_cls_session *cls_sess, uint32_t conn_idx)
1634 {
1635         struct iscsi_cls_conn *cls_conn;
1636         struct iscsi_session *sess;
1637         struct ddb_entry *ddb_entry;
1638
1639         DEBUG2(printk(KERN_INFO "Func: %s\n", __func__));
1640         cls_conn = iscsi_conn_setup(cls_sess, sizeof(struct qla_conn),
1641                                     conn_idx);
1642         if (!cls_conn)
1643                 return NULL;
1644
1645         sess = cls_sess->dd_data;
1646         ddb_entry = sess->dd_data;
1647         ddb_entry->conn = cls_conn;
1648
1649         return cls_conn;
1650 }
1651
1652 static int qla4xxx_conn_bind(struct iscsi_cls_session *cls_session,
1653                              struct iscsi_cls_conn *cls_conn,
1654                              uint64_t transport_fd, int is_leading)
1655 {
1656         struct iscsi_conn *conn;
1657         struct qla_conn *qla_conn;
1658         struct iscsi_endpoint *ep;
1659
1660         DEBUG2(printk(KERN_INFO "Func: %s\n", __func__));
1661
1662         if (iscsi_conn_bind(cls_session, cls_conn, is_leading))
1663                 return -EINVAL;
1664         ep = iscsi_lookup_endpoint(transport_fd);
1665         conn = cls_conn->dd_data;
1666         qla_conn = conn->dd_data;
1667         qla_conn->qla_ep = ep->dd_data;
1668         return 0;
1669 }
1670
1671 static int qla4xxx_conn_start(struct iscsi_cls_conn *cls_conn)
1672 {
1673         struct iscsi_cls_session *cls_sess = iscsi_conn_to_session(cls_conn);
1674         struct iscsi_session *sess;
1675         struct ddb_entry *ddb_entry;
1676         struct scsi_qla_host *ha;
1677         struct dev_db_entry *fw_ddb_entry = NULL;
1678         dma_addr_t fw_ddb_entry_dma;
1679         uint32_t mbx_sts = 0;
1680         int ret = 0;
1681         int status = QLA_SUCCESS;
1682
1683         DEBUG2(printk(KERN_INFO "Func: %s\n", __func__));
1684         sess = cls_sess->dd_data;
1685         ddb_entry = sess->dd_data;
1686         ha = ddb_entry->ha;
1687
1688         /* Check if we have  matching FW DDB, if yes then do not
1689          * login to this target. This could cause target to logout previous
1690          * connection
1691          */
1692         ret = qla4xxx_match_fwdb_session(ha, cls_conn);
1693         if (ret == QLA_SUCCESS) {
1694                 ql4_printk(KERN_INFO, ha,
1695                            "Session already exist in FW.\n");
1696                 ret = -EEXIST;
1697                 goto exit_conn_start;
1698         }
1699
1700         fw_ddb_entry = dma_alloc_coherent(&ha->pdev->dev, sizeof(*fw_ddb_entry),
1701                                           &fw_ddb_entry_dma, GFP_KERNEL);
1702         if (!fw_ddb_entry) {
1703                 ql4_printk(KERN_ERR, ha,
1704                            "%s: Unable to allocate dma buffer\n", __func__);
1705                 ret = -ENOMEM;
1706                 goto exit_conn_start;
1707         }
1708
1709         ret = qla4xxx_set_param_ddbentry(ha, ddb_entry, cls_conn, &mbx_sts);
1710         if (ret) {
1711                 /* If iscsid is stopped and started then no need to do
1712                 * set param again since ddb state will be already
1713                 * active and FW does not allow set ddb to an
1714                 * active session.
1715                 */
1716                 if (mbx_sts)
1717                         if (ddb_entry->fw_ddb_device_state ==
1718                                                 DDB_DS_SESSION_ACTIVE) {
1719                                 ddb_entry->unblock_sess(ddb_entry->sess);
1720                                 goto exit_set_param;
1721                         }
1722
1723                 ql4_printk(KERN_ERR, ha, "%s: Failed set param for index[%d]\n",
1724                            __func__, ddb_entry->fw_ddb_index);
1725                 goto exit_conn_start;
1726         }
1727
1728         status = qla4xxx_conn_open(ha, ddb_entry->fw_ddb_index);
1729         if (status == QLA_ERROR) {
1730                 ql4_printk(KERN_ERR, ha, "%s: Login failed: %s\n", __func__,
1731                            sess->targetname);
1732                 ret = -EINVAL;
1733                 goto exit_conn_start;
1734         }
1735
1736         if (ddb_entry->fw_ddb_device_state == DDB_DS_NO_CONNECTION_ACTIVE)
1737                 ddb_entry->fw_ddb_device_state = DDB_DS_LOGIN_IN_PROCESS;
1738
1739         DEBUG2(printk(KERN_INFO "%s: DDB state [%d]\n", __func__,
1740                       ddb_entry->fw_ddb_device_state));
1741
1742 exit_set_param:
1743         ret = 0;
1744
1745 exit_conn_start:
1746         if (fw_ddb_entry)
1747                 dma_free_coherent(&ha->pdev->dev, sizeof(*fw_ddb_entry),
1748                                   fw_ddb_entry, fw_ddb_entry_dma);
1749         return ret;
1750 }
1751
1752 static void qla4xxx_conn_destroy(struct iscsi_cls_conn *cls_conn)
1753 {
1754         struct iscsi_cls_session *cls_sess = iscsi_conn_to_session(cls_conn);
1755         struct iscsi_session *sess;
1756         struct scsi_qla_host *ha;
1757         struct ddb_entry *ddb_entry;
1758         int options;
1759
1760         DEBUG2(printk(KERN_INFO "Func: %s\n", __func__));
1761         sess = cls_sess->dd_data;
1762         ddb_entry = sess->dd_data;
1763         ha = ddb_entry->ha;
1764
1765         options = LOGOUT_OPTION_CLOSE_SESSION;
1766         if (qla4xxx_session_logout_ddb(ha, ddb_entry, options) == QLA_ERROR)
1767                 ql4_printk(KERN_ERR, ha, "%s: Logout failed\n", __func__);
1768 }
1769
1770 static void qla4xxx_task_work(struct work_struct *wdata)
1771 {
1772         struct ql4_task_data *task_data;
1773         struct scsi_qla_host *ha;
1774         struct passthru_status *sts;
1775         struct iscsi_task *task;
1776         struct iscsi_hdr *hdr;
1777         uint8_t *data;
1778         uint32_t data_len;
1779         struct iscsi_conn *conn;
1780         int hdr_len;
1781         itt_t itt;
1782
1783         task_data = container_of(wdata, struct ql4_task_data, task_work);
1784         ha = task_data->ha;
1785         task = task_data->task;
1786         sts = &task_data->sts;
1787         hdr_len = sizeof(struct iscsi_hdr);
1788
1789         DEBUG3(printk(KERN_INFO "Status returned\n"));
1790         DEBUG3(qla4xxx_dump_buffer(sts, 64));
1791         DEBUG3(printk(KERN_INFO "Response buffer"));
1792         DEBUG3(qla4xxx_dump_buffer(task_data->resp_buffer, 64));
1793
1794         conn = task->conn;
1795
1796         switch (sts->completionStatus) {
1797         case PASSTHRU_STATUS_COMPLETE:
1798                 hdr = (struct iscsi_hdr *)task_data->resp_buffer;
1799                 /* Assign back the itt in hdr, until we use the PREASSIGN_TAG */
1800                 itt = sts->handle;
1801                 hdr->itt = itt;
1802                 data = task_data->resp_buffer + hdr_len;
1803                 data_len = task_data->resp_len - hdr_len;
1804                 iscsi_complete_pdu(conn, hdr, data, data_len);
1805                 break;
1806         default:
1807                 ql4_printk(KERN_ERR, ha, "Passthru failed status = 0x%x\n",
1808                            sts->completionStatus);
1809                 break;
1810         }
1811         return;
1812 }
1813
1814 static int qla4xxx_alloc_pdu(struct iscsi_task *task, uint8_t opcode)
1815 {
1816         struct ql4_task_data *task_data;
1817         struct iscsi_session *sess;
1818         struct ddb_entry *ddb_entry;
1819         struct scsi_qla_host *ha;
1820         int hdr_len;
1821
1822         sess = task->conn->session;
1823         ddb_entry = sess->dd_data;
1824         ha = ddb_entry->ha;
1825         task_data = task->dd_data;
1826         memset(task_data, 0, sizeof(struct ql4_task_data));
1827
1828         if (task->sc) {
1829                 ql4_printk(KERN_INFO, ha,
1830                            "%s: SCSI Commands not implemented\n", __func__);
1831                 return -EINVAL;
1832         }
1833
1834         hdr_len = sizeof(struct iscsi_hdr);
1835         task_data->ha = ha;
1836         task_data->task = task;
1837
1838         if (task->data_count) {
1839                 task_data->data_dma = dma_map_single(&ha->pdev->dev, task->data,
1840                                                      task->data_count,
1841                                                      PCI_DMA_TODEVICE);
1842         }
1843
1844         DEBUG2(ql4_printk(KERN_INFO, ha, "%s: MaxRecvLen %u, iscsi hrd %d\n",
1845                       __func__, task->conn->max_recv_dlength, hdr_len));
1846
1847         task_data->resp_len = task->conn->max_recv_dlength + hdr_len;
1848         task_data->resp_buffer = dma_alloc_coherent(&ha->pdev->dev,
1849                                                     task_data->resp_len,
1850                                                     &task_data->resp_dma,
1851                                                     GFP_ATOMIC);
1852         if (!task_data->resp_buffer)
1853                 goto exit_alloc_pdu;
1854
1855         task_data->req_len = task->data_count + hdr_len;
1856         task_data->req_buffer = dma_alloc_coherent(&ha->pdev->dev,
1857                                                    task_data->req_len,
1858                                                    &task_data->req_dma,
1859                                                    GFP_ATOMIC);
1860         if (!task_data->req_buffer)
1861                 goto exit_alloc_pdu;
1862
1863         task->hdr = task_data->req_buffer;
1864
1865         INIT_WORK(&task_data->task_work, qla4xxx_task_work);
1866
1867         return 0;
1868
1869 exit_alloc_pdu:
1870         if (task_data->resp_buffer)
1871                 dma_free_coherent(&ha->pdev->dev, task_data->resp_len,
1872                                   task_data->resp_buffer, task_data->resp_dma);
1873
1874         if (task_data->req_buffer)
1875                 dma_free_coherent(&ha->pdev->dev, task_data->req_len,
1876                                   task_data->req_buffer, task_data->req_dma);
1877         return -ENOMEM;
1878 }
1879
1880 static void qla4xxx_task_cleanup(struct iscsi_task *task)
1881 {
1882         struct ql4_task_data *task_data;
1883         struct iscsi_session *sess;
1884         struct ddb_entry *ddb_entry;
1885         struct scsi_qla_host *ha;
1886         int hdr_len;
1887
1888         hdr_len = sizeof(struct iscsi_hdr);
1889         sess = task->conn->session;
1890         ddb_entry = sess->dd_data;
1891         ha = ddb_entry->ha;
1892         task_data = task->dd_data;
1893
1894         if (task->data_count) {
1895                 dma_unmap_single(&ha->pdev->dev, task_data->data_dma,
1896                                  task->data_count, PCI_DMA_TODEVICE);
1897         }
1898
1899         DEBUG2(ql4_printk(KERN_INFO, ha, "%s: MaxRecvLen %u, iscsi hrd %d\n",
1900                       __func__, task->conn->max_recv_dlength, hdr_len));
1901
1902         dma_free_coherent(&ha->pdev->dev, task_data->resp_len,
1903                           task_data->resp_buffer, task_data->resp_dma);
1904         dma_free_coherent(&ha->pdev->dev, task_data->req_len,
1905                           task_data->req_buffer, task_data->req_dma);
1906         return;
1907 }
1908
1909 static int qla4xxx_task_xmit(struct iscsi_task *task)
1910 {
1911         struct scsi_cmnd *sc = task->sc;
1912         struct iscsi_session *sess = task->conn->session;
1913         struct ddb_entry *ddb_entry = sess->dd_data;
1914         struct scsi_qla_host *ha = ddb_entry->ha;
1915
1916         if (!sc)
1917                 return qla4xxx_send_passthru0(task);
1918
1919         ql4_printk(KERN_INFO, ha, "%s: scsi cmd xmit not implemented\n",
1920                    __func__);
1921         return -ENOSYS;
1922 }
1923
1924 static void qla4xxx_copy_fwddb_param(struct scsi_qla_host *ha,
1925                                      struct dev_db_entry *fw_ddb_entry,
1926                                      struct iscsi_cls_session *cls_sess,
1927                                      struct iscsi_cls_conn *cls_conn)
1928 {
1929         int buflen = 0;
1930         struct iscsi_session *sess;
1931         struct ddb_entry *ddb_entry;
1932         struct iscsi_conn *conn;
1933         char ip_addr[DDB_IPADDR_LEN];
1934         uint16_t options = 0;
1935
1936         sess = cls_sess->dd_data;
1937         ddb_entry = sess->dd_data;
1938         conn = cls_conn->dd_data;
1939
1940         ddb_entry->chap_tbl_idx = le16_to_cpu(fw_ddb_entry->chap_tbl_idx);
1941
1942         conn->max_recv_dlength = BYTE_UNITS *
1943                           le16_to_cpu(fw_ddb_entry->iscsi_max_rcv_data_seg_len);
1944
1945         conn->max_xmit_dlength = BYTE_UNITS *
1946                           le16_to_cpu(fw_ddb_entry->iscsi_max_snd_data_seg_len);
1947
1948         sess->initial_r2t_en =
1949                             (BIT_10 & le16_to_cpu(fw_ddb_entry->iscsi_options));
1950
1951         sess->max_r2t = le16_to_cpu(fw_ddb_entry->iscsi_max_outsnd_r2t);
1952
1953         sess->imm_data_en = (BIT_11 & le16_to_cpu(fw_ddb_entry->iscsi_options));
1954
1955         sess->first_burst = BYTE_UNITS *
1956                                le16_to_cpu(fw_ddb_entry->iscsi_first_burst_len);
1957
1958         sess->max_burst = BYTE_UNITS *
1959                                  le16_to_cpu(fw_ddb_entry->iscsi_max_burst_len);
1960
1961         sess->time2wait = le16_to_cpu(fw_ddb_entry->iscsi_def_time2wait);
1962
1963         sess->time2retain = le16_to_cpu(fw_ddb_entry->iscsi_def_time2retain);
1964
1965         conn->persistent_port = le16_to_cpu(fw_ddb_entry->port);
1966
1967         sess->tpgt = le32_to_cpu(fw_ddb_entry->tgt_portal_grp);
1968
1969         options = le16_to_cpu(fw_ddb_entry->options);
1970         if (options & DDB_OPT_IPV6_DEVICE)
1971                 sprintf(ip_addr, "%pI6", fw_ddb_entry->ip_addr);
1972         else
1973                 sprintf(ip_addr, "%pI4", fw_ddb_entry->ip_addr);
1974
1975         iscsi_set_param(cls_conn, ISCSI_PARAM_TARGET_NAME,
1976                         (char *)fw_ddb_entry->iscsi_name, buflen);
1977         iscsi_set_param(cls_conn, ISCSI_PARAM_INITIATOR_NAME,
1978                         (char *)ha->name_string, buflen);
1979         iscsi_set_param(cls_conn, ISCSI_PARAM_PERSISTENT_ADDRESS,
1980                         (char *)ip_addr, buflen);
1981         iscsi_set_param(cls_conn, ISCSI_PARAM_TARGET_ALIAS,
1982                         (char *)fw_ddb_entry->iscsi_alias, buflen);
1983 }
1984
1985 void qla4xxx_update_session_conn_fwddb_param(struct scsi_qla_host *ha,
1986                                              struct ddb_entry *ddb_entry)
1987 {
1988         struct iscsi_cls_session *cls_sess;
1989         struct iscsi_cls_conn *cls_conn;
1990         uint32_t ddb_state;
1991         dma_addr_t fw_ddb_entry_dma;
1992         struct dev_db_entry *fw_ddb_entry;
1993
1994         fw_ddb_entry = dma_alloc_coherent(&ha->pdev->dev, sizeof(*fw_ddb_entry),
1995                                           &fw_ddb_entry_dma, GFP_KERNEL);
1996         if (!fw_ddb_entry) {
1997                 ql4_printk(KERN_ERR, ha,
1998                            "%s: Unable to allocate dma buffer\n", __func__);
1999                 goto exit_session_conn_fwddb_param;
2000         }
2001
2002         if (qla4xxx_get_fwddb_entry(ha, ddb_entry->fw_ddb_index, fw_ddb_entry,
2003                                     fw_ddb_entry_dma, NULL, NULL, &ddb_state,
2004                                     NULL, NULL, NULL) == QLA_ERROR) {
2005                 DEBUG2(ql4_printk(KERN_ERR, ha, "scsi%ld: %s: failed "
2006                                   "get_ddb_entry for fw_ddb_index %d\n",
2007                                   ha->host_no, __func__,
2008                                   ddb_entry->fw_ddb_index));
2009                 goto exit_session_conn_fwddb_param;
2010         }
2011
2012         cls_sess = ddb_entry->sess;
2013
2014         cls_conn = ddb_entry->conn;
2015
2016         /* Update params */
2017         qla4xxx_copy_fwddb_param(ha, fw_ddb_entry, cls_sess, cls_conn);
2018
2019 exit_session_conn_fwddb_param:
2020         if (fw_ddb_entry)
2021                 dma_free_coherent(&ha->pdev->dev, sizeof(*fw_ddb_entry),
2022                                   fw_ddb_entry, fw_ddb_entry_dma);
2023 }
2024
2025 void qla4xxx_update_session_conn_param(struct scsi_qla_host *ha,
2026                                        struct ddb_entry *ddb_entry)
2027 {
2028         struct iscsi_cls_session *cls_sess;
2029         struct iscsi_cls_conn *cls_conn;
2030         struct iscsi_session *sess;
2031         struct iscsi_conn *conn;
2032         uint32_t ddb_state;
2033         dma_addr_t fw_ddb_entry_dma;
2034         struct dev_db_entry *fw_ddb_entry;
2035
2036         fw_ddb_entry = dma_alloc_coherent(&ha->pdev->dev, sizeof(*fw_ddb_entry),
2037                                           &fw_ddb_entry_dma, GFP_KERNEL);
2038         if (!fw_ddb_entry) {
2039                 ql4_printk(KERN_ERR, ha,
2040                            "%s: Unable to allocate dma buffer\n", __func__);
2041                 goto exit_session_conn_param;
2042         }
2043
2044         if (qla4xxx_get_fwddb_entry(ha, ddb_entry->fw_ddb_index, fw_ddb_entry,
2045                                     fw_ddb_entry_dma, NULL, NULL, &ddb_state,
2046                                     NULL, NULL, NULL) == QLA_ERROR) {
2047                 DEBUG2(ql4_printk(KERN_ERR, ha, "scsi%ld: %s: failed "
2048                                   "get_ddb_entry for fw_ddb_index %d\n",
2049                                   ha->host_no, __func__,
2050                                   ddb_entry->fw_ddb_index));
2051                 goto exit_session_conn_param;
2052         }
2053
2054         cls_sess = ddb_entry->sess;
2055         sess = cls_sess->dd_data;
2056
2057         cls_conn = ddb_entry->conn;
2058         conn = cls_conn->dd_data;
2059
2060         /* Update timers after login */
2061         ddb_entry->default_relogin_timeout =
2062                 (le16_to_cpu(fw_ddb_entry->def_timeout) > LOGIN_TOV) &&
2063                  (le16_to_cpu(fw_ddb_entry->def_timeout) < LOGIN_TOV * 10) ?
2064                  le16_to_cpu(fw_ddb_entry->def_timeout) : LOGIN_TOV;
2065         ddb_entry->default_time2wait =
2066                                 le16_to_cpu(fw_ddb_entry->iscsi_def_time2wait);
2067
2068         /* Update params */
2069         ddb_entry->chap_tbl_idx = le16_to_cpu(fw_ddb_entry->chap_tbl_idx);
2070         conn->max_recv_dlength = BYTE_UNITS *
2071                           le16_to_cpu(fw_ddb_entry->iscsi_max_rcv_data_seg_len);
2072
2073         conn->max_xmit_dlength = BYTE_UNITS *
2074                           le16_to_cpu(fw_ddb_entry->iscsi_max_snd_data_seg_len);
2075
2076         sess->initial_r2t_en =
2077                             (BIT_10 & le16_to_cpu(fw_ddb_entry->iscsi_options));
2078
2079         sess->max_r2t = le16_to_cpu(fw_ddb_entry->iscsi_max_outsnd_r2t);
2080
2081         sess->imm_data_en = (BIT_11 & le16_to_cpu(fw_ddb_entry->iscsi_options));
2082
2083         sess->first_burst = BYTE_UNITS *
2084                                le16_to_cpu(fw_ddb_entry->iscsi_first_burst_len);
2085
2086         sess->max_burst = BYTE_UNITS *
2087                                  le16_to_cpu(fw_ddb_entry->iscsi_max_burst_len);
2088
2089         sess->time2wait = le16_to_cpu(fw_ddb_entry->iscsi_def_time2wait);
2090
2091         sess->time2retain = le16_to_cpu(fw_ddb_entry->iscsi_def_time2retain);
2092
2093         sess->tpgt = le32_to_cpu(fw_ddb_entry->tgt_portal_grp);
2094
2095         memcpy(sess->initiatorname, ha->name_string,
2096                min(sizeof(ha->name_string), sizeof(sess->initiatorname)));
2097
2098         iscsi_set_param(cls_conn, ISCSI_PARAM_TARGET_ALIAS,
2099                         (char *)fw_ddb_entry->iscsi_alias, 0);
2100
2101 exit_session_conn_param:
2102         if (fw_ddb_entry)
2103                 dma_free_coherent(&ha->pdev->dev, sizeof(*fw_ddb_entry),
2104                                   fw_ddb_entry, fw_ddb_entry_dma);
2105 }
2106
2107 /*
2108  * Timer routines
2109  */
2110
2111 static void qla4xxx_start_timer(struct scsi_qla_host *ha, void *func,
2112                                 unsigned long interval)
2113 {
2114         DEBUG(printk("scsi: %s: Starting timer thread for adapter %d\n",
2115                      __func__, ha->host->host_no));
2116         init_timer(&ha->timer);
2117         ha->timer.expires = jiffies + interval * HZ;
2118         ha->timer.data = (unsigned long)ha;
2119         ha->timer.function = (void (*)(unsigned long))func;
2120         add_timer(&ha->timer);
2121         ha->timer_active = 1;
2122 }
2123
2124 static void qla4xxx_stop_timer(struct scsi_qla_host *ha)
2125 {
2126         del_timer_sync(&ha->timer);
2127         ha->timer_active = 0;
2128 }
2129
2130 /***
2131  * qla4xxx_mark_device_missing - blocks the session
2132  * @cls_session: Pointer to the session to be blocked
2133  * @ddb_entry: Pointer to device database entry
2134  *
2135  * This routine marks a device missing and close connection.
2136  **/
2137 void qla4xxx_mark_device_missing(struct iscsi_cls_session *cls_session)
2138 {
2139         iscsi_block_session(cls_session);
2140 }
2141
2142 /**
2143  * qla4xxx_mark_all_devices_missing - mark all devices as missing.
2144  * @ha: Pointer to host adapter structure.
2145  *
2146  * This routine marks a device missing and resets the relogin retry count.
2147  **/
2148 void qla4xxx_mark_all_devices_missing(struct scsi_qla_host *ha)
2149 {
2150         iscsi_host_for_each_session(ha->host, qla4xxx_mark_device_missing);
2151 }
2152
2153 static struct srb* qla4xxx_get_new_srb(struct scsi_qla_host *ha,
2154                                        struct ddb_entry *ddb_entry,
2155                                        struct scsi_cmnd *cmd)
2156 {
2157         struct srb *srb;
2158
2159         srb = mempool_alloc(ha->srb_mempool, GFP_ATOMIC);
2160         if (!srb)
2161                 return srb;
2162
2163         kref_init(&srb->srb_ref);
2164         srb->ha = ha;
2165         srb->ddb = ddb_entry;
2166         srb->cmd = cmd;
2167         srb->flags = 0;
2168         CMD_SP(cmd) = (void *)srb;
2169
2170         return srb;
2171 }
2172
2173 static void qla4xxx_srb_free_dma(struct scsi_qla_host *ha, struct srb *srb)
2174 {
2175         struct scsi_cmnd *cmd = srb->cmd;
2176
2177         if (srb->flags & SRB_DMA_VALID) {
2178                 scsi_dma_unmap(cmd);
2179                 srb->flags &= ~SRB_DMA_VALID;
2180         }
2181         CMD_SP(cmd) = NULL;
2182 }
2183
2184 void qla4xxx_srb_compl(struct kref *ref)
2185 {
2186         struct srb *srb = container_of(ref, struct srb, srb_ref);
2187         struct scsi_cmnd *cmd = srb->cmd;
2188         struct scsi_qla_host *ha = srb->ha;
2189
2190         qla4xxx_srb_free_dma(ha, srb);
2191
2192         mempool_free(srb, ha->srb_mempool);
2193
2194         cmd->scsi_done(cmd);
2195 }
2196
2197 /**
2198  * qla4xxx_queuecommand - scsi layer issues scsi command to driver.
2199  * @host: scsi host
2200  * @cmd: Pointer to Linux's SCSI command structure
2201  *
2202  * Remarks:
2203  * This routine is invoked by Linux to send a SCSI command to the driver.
2204  * The mid-level driver tries to ensure that queuecommand never gets
2205  * invoked concurrently with itself or the interrupt handler (although
2206  * the interrupt handler may call this routine as part of request-
2207  * completion handling).   Unfortunely, it sometimes calls the scheduler
2208  * in interrupt context which is a big NO! NO!.
2209  **/
2210 static int qla4xxx_queuecommand(struct Scsi_Host *host, struct scsi_cmnd *cmd)
2211 {
2212         struct scsi_qla_host *ha = to_qla_host(host);
2213         struct ddb_entry *ddb_entry = cmd->device->hostdata;
2214         struct iscsi_cls_session *sess = ddb_entry->sess;
2215         struct srb *srb;
2216         int rval;
2217
2218         if (test_bit(AF_EEH_BUSY, &ha->flags)) {
2219                 if (test_bit(AF_PCI_CHANNEL_IO_PERM_FAILURE, &ha->flags))
2220                         cmd->result = DID_NO_CONNECT << 16;
2221                 else
2222                         cmd->result = DID_REQUEUE << 16;
2223                 goto qc_fail_command;
2224         }
2225
2226         if (!sess) {
2227                 cmd->result = DID_IMM_RETRY << 16;
2228                 goto qc_fail_command;
2229         }
2230
2231         rval = iscsi_session_chkready(sess);
2232         if (rval) {
2233                 cmd->result = rval;
2234                 goto qc_fail_command;
2235         }
2236
2237         if (test_bit(DPC_RESET_HA_INTR, &ha->dpc_flags) ||
2238             test_bit(DPC_RESET_ACTIVE, &ha->dpc_flags) ||
2239             test_bit(DPC_RESET_HA, &ha->dpc_flags) ||
2240             test_bit(DPC_HA_UNRECOVERABLE, &ha->dpc_flags) ||
2241             test_bit(DPC_HA_NEED_QUIESCENT, &ha->dpc_flags) ||
2242             !test_bit(AF_ONLINE, &ha->flags) ||
2243             !test_bit(AF_LINK_UP, &ha->flags) ||
2244             test_bit(DPC_RESET_HA_FW_CONTEXT, &ha->dpc_flags))
2245                 goto qc_host_busy;
2246
2247         srb = qla4xxx_get_new_srb(ha, ddb_entry, cmd);
2248         if (!srb)
2249                 goto qc_host_busy;
2250
2251         rval = qla4xxx_send_command_to_isp(ha, srb);
2252         if (rval != QLA_SUCCESS)
2253                 goto qc_host_busy_free_sp;
2254
2255         return 0;
2256
2257 qc_host_busy_free_sp:
2258         qla4xxx_srb_free_dma(ha, srb);
2259         mempool_free(srb, ha->srb_mempool);
2260
2261 qc_host_busy:
2262         return SCSI_MLQUEUE_HOST_BUSY;
2263
2264 qc_fail_command:
2265         cmd->scsi_done(cmd);
2266
2267         return 0;
2268 }
2269
2270 /**
2271  * qla4xxx_mem_free - frees memory allocated to adapter
2272  * @ha: Pointer to host adapter structure.
2273  *
2274  * Frees memory previously allocated by qla4xxx_mem_alloc
2275  **/
2276 static void qla4xxx_mem_free(struct scsi_qla_host *ha)
2277 {
2278         if (ha->queues)
2279                 dma_free_coherent(&ha->pdev->dev, ha->queues_len, ha->queues,
2280                                   ha->queues_dma);
2281
2282          if (ha->fw_dump)
2283                 vfree(ha->fw_dump);
2284
2285         ha->queues_len = 0;
2286         ha->queues = NULL;
2287         ha->queues_dma = 0;
2288         ha->request_ring = NULL;
2289         ha->request_dma = 0;
2290         ha->response_ring = NULL;
2291         ha->response_dma = 0;
2292         ha->shadow_regs = NULL;
2293         ha->shadow_regs_dma = 0;
2294         ha->fw_dump = NULL;
2295         ha->fw_dump_size = 0;
2296
2297         /* Free srb pool. */
2298         if (ha->srb_mempool)
2299                 mempool_destroy(ha->srb_mempool);
2300
2301         ha->srb_mempool = NULL;
2302
2303         if (ha->chap_dma_pool)
2304                 dma_pool_destroy(ha->chap_dma_pool);
2305
2306         if (ha->chap_list)
2307                 vfree(ha->chap_list);
2308         ha->chap_list = NULL;
2309
2310         if (ha->fw_ddb_dma_pool)
2311                 dma_pool_destroy(ha->fw_ddb_dma_pool);
2312
2313         /* release io space registers  */
2314         if (is_qla8022(ha)) {
2315                 if (ha->nx_pcibase)
2316                         iounmap(
2317                             (struct device_reg_82xx __iomem *)ha->nx_pcibase);
2318         } else if (ha->reg)
2319                 iounmap(ha->reg);
2320         pci_release_regions(ha->pdev);
2321 }
2322
2323 /**
2324  * qla4xxx_mem_alloc - allocates memory for use by adapter.
2325  * @ha: Pointer to host adapter structure
2326  *
2327  * Allocates DMA memory for request and response queues. Also allocates memory
2328  * for srbs.
2329  **/
2330 static int qla4xxx_mem_alloc(struct scsi_qla_host *ha)
2331 {
2332         unsigned long align;
2333
2334         /* Allocate contiguous block of DMA memory for queues. */
2335         ha->queues_len = ((REQUEST_QUEUE_DEPTH * QUEUE_SIZE) +
2336                           (RESPONSE_QUEUE_DEPTH * QUEUE_SIZE) +
2337                           sizeof(struct shadow_regs) +
2338                           MEM_ALIGN_VALUE +
2339                           (PAGE_SIZE - 1)) & ~(PAGE_SIZE - 1);
2340         ha->queues = dma_alloc_coherent(&ha->pdev->dev, ha->queues_len,
2341                                         &ha->queues_dma, GFP_KERNEL);
2342         if (ha->queues == NULL) {
2343                 ql4_printk(KERN_WARNING, ha,
2344                     "Memory Allocation failed - queues.\n");
2345
2346                 goto mem_alloc_error_exit;
2347         }
2348         memset(ha->queues, 0, ha->queues_len);
2349
2350         /*
2351          * As per RISC alignment requirements -- the bus-address must be a
2352          * multiple of the request-ring size (in bytes).
2353          */
2354         align = 0;
2355         if ((unsigned long)ha->queues_dma & (MEM_ALIGN_VALUE - 1))
2356                 align = MEM_ALIGN_VALUE - ((unsigned long)ha->queues_dma &
2357                                            (MEM_ALIGN_VALUE - 1));
2358
2359         /* Update request and response queue pointers. */
2360         ha->request_dma = ha->queues_dma + align;
2361         ha->request_ring = (struct queue_entry *) (ha->queues + align);
2362         ha->response_dma = ha->queues_dma + align +
2363                 (REQUEST_QUEUE_DEPTH * QUEUE_SIZE);
2364         ha->response_ring = (struct queue_entry *) (ha->queues + align +
2365                                                     (REQUEST_QUEUE_DEPTH *
2366                                                      QUEUE_SIZE));
2367         ha->shadow_regs_dma = ha->queues_dma + align +
2368                 (REQUEST_QUEUE_DEPTH * QUEUE_SIZE) +
2369                 (RESPONSE_QUEUE_DEPTH * QUEUE_SIZE);
2370         ha->shadow_regs = (struct shadow_regs *) (ha->queues + align +
2371                                                   (REQUEST_QUEUE_DEPTH *
2372                                                    QUEUE_SIZE) +
2373                                                   (RESPONSE_QUEUE_DEPTH *
2374                                                    QUEUE_SIZE));
2375
2376         /* Allocate memory for srb pool. */
2377         ha->srb_mempool = mempool_create(SRB_MIN_REQ, mempool_alloc_slab,
2378                                          mempool_free_slab, srb_cachep);
2379         if (ha->srb_mempool == NULL) {
2380                 ql4_printk(KERN_WARNING, ha,
2381                     "Memory Allocation failed - SRB Pool.\n");
2382
2383                 goto mem_alloc_error_exit;
2384         }
2385
2386         ha->chap_dma_pool = dma_pool_create("ql4_chap", &ha->pdev->dev,
2387                                             CHAP_DMA_BLOCK_SIZE, 8, 0);
2388
2389         if (ha->chap_dma_pool == NULL) {
2390                 ql4_printk(KERN_WARNING, ha,
2391                     "%s: chap_dma_pool allocation failed..\n", __func__);
2392                 goto mem_alloc_error_exit;
2393         }
2394
2395         ha->fw_ddb_dma_pool = dma_pool_create("ql4_fw_ddb", &ha->pdev->dev,
2396                                               DDB_DMA_BLOCK_SIZE, 8, 0);
2397
2398         if (ha->fw_ddb_dma_pool == NULL) {
2399                 ql4_printk(KERN_WARNING, ha,
2400                            "%s: fw_ddb_dma_pool allocation failed..\n",
2401                            __func__);
2402                 goto mem_alloc_error_exit;
2403         }
2404
2405         return QLA_SUCCESS;
2406
2407 mem_alloc_error_exit:
2408         qla4xxx_mem_free(ha);
2409         return QLA_ERROR;
2410 }
2411
2412 /**
2413  * qla4_8xxx_check_temp - Check the ISP82XX temperature.
2414  * @ha: adapter block pointer.
2415  *
2416  * Note: The caller should not hold the idc lock.
2417  **/
2418 static int qla4_8xxx_check_temp(struct scsi_qla_host *ha)
2419 {
2420         uint32_t temp, temp_state, temp_val;
2421         int status = QLA_SUCCESS;
2422
2423         temp = qla4_8xxx_rd_32(ha, CRB_TEMP_STATE);
2424
2425         temp_state = qla82xx_get_temp_state(temp);
2426         temp_val = qla82xx_get_temp_val(temp);
2427
2428         if (temp_state == QLA82XX_TEMP_PANIC) {
2429                 ql4_printk(KERN_WARNING, ha, "Device temperature %d degrees C"
2430                            " exceeds maximum allowed. Hardware has been shut"
2431                            " down.\n", temp_val);
2432                 status = QLA_ERROR;
2433         } else if (temp_state == QLA82XX_TEMP_WARN) {
2434                 if (ha->temperature == QLA82XX_TEMP_NORMAL)
2435                         ql4_printk(KERN_WARNING, ha, "Device temperature %d"
2436                                    " degrees C exceeds operating range."
2437                                    " Immediate action needed.\n", temp_val);
2438         } else {
2439                 if (ha->temperature == QLA82XX_TEMP_WARN)
2440                         ql4_printk(KERN_INFO, ha, "Device temperature is"
2441                                    " now %d degrees C in normal range.\n",
2442                                    temp_val);
2443         }
2444         ha->temperature = temp_state;
2445         return status;
2446 }
2447
2448 /**
2449  * qla4_8xxx_check_fw_alive  - Check firmware health
2450  * @ha: Pointer to host adapter structure.
2451  *
2452  * Context: Interrupt
2453  **/
2454 static int qla4_8xxx_check_fw_alive(struct scsi_qla_host *ha)
2455 {
2456         uint32_t fw_heartbeat_counter;
2457         int status = QLA_SUCCESS;
2458
2459         fw_heartbeat_counter = qla4_8xxx_rd_32(ha, QLA82XX_PEG_ALIVE_COUNTER);
2460         /* If PEG_ALIVE_COUNTER is 0xffffffff, AER/EEH is in progress, ignore */
2461         if (fw_heartbeat_counter == 0xffffffff) {
2462                 DEBUG2(printk(KERN_WARNING "scsi%ld: %s: Device in frozen "
2463                     "state, QLA82XX_PEG_ALIVE_COUNTER is 0xffffffff\n",
2464                     ha->host_no, __func__));
2465                 return status;
2466         }
2467
2468         if (ha->fw_heartbeat_counter == fw_heartbeat_counter) {
2469                 ha->seconds_since_last_heartbeat++;
2470                 /* FW not alive after 2 seconds */
2471                 if (ha->seconds_since_last_heartbeat == 2) {
2472                         ha->seconds_since_last_heartbeat = 0;
2473
2474                         ql4_printk(KERN_INFO, ha,
2475                                    "scsi(%ld): %s, Dumping hw/fw registers:\n "
2476                                    " PEG_HALT_STATUS1: 0x%x, PEG_HALT_STATUS2:"
2477                                    " 0x%x,\n PEG_NET_0_PC: 0x%x, PEG_NET_1_PC:"
2478                                    " 0x%x,\n PEG_NET_2_PC: 0x%x, PEG_NET_3_PC:"
2479                                    " 0x%x,\n PEG_NET_4_PC: 0x%x\n",
2480                                    ha->host_no, __func__,
2481                                    qla4_8xxx_rd_32(ha,
2482                                                    QLA82XX_PEG_HALT_STATUS1),
2483                                    qla4_8xxx_rd_32(ha,
2484                                                    QLA82XX_PEG_HALT_STATUS2),
2485                                    qla4_8xxx_rd_32(ha, QLA82XX_CRB_PEG_NET_0 +
2486                                                    0x3c),
2487                                    qla4_8xxx_rd_32(ha, QLA82XX_CRB_PEG_NET_1 +
2488                                                    0x3c),
2489                                    qla4_8xxx_rd_32(ha, QLA82XX_CRB_PEG_NET_2 +
2490                                                    0x3c),
2491                                    qla4_8xxx_rd_32(ha, QLA82XX_CRB_PEG_NET_3 +
2492                                                    0x3c),
2493                                    qla4_8xxx_rd_32(ha, QLA82XX_CRB_PEG_NET_4 +
2494                                                    0x3c));
2495                         status = QLA_ERROR;
2496                 }
2497         } else
2498                 ha->seconds_since_last_heartbeat = 0;
2499
2500         ha->fw_heartbeat_counter = fw_heartbeat_counter;
2501         return status;
2502 }
2503
2504 /**
2505  * qla4_8xxx_watchdog - Poll dev state
2506  * @ha: Pointer to host adapter structure.
2507  *
2508  * Context: Interrupt
2509  **/
2510 void qla4_8xxx_watchdog(struct scsi_qla_host *ha)
2511 {
2512         uint32_t dev_state, halt_status;
2513
2514         /* don't poll if reset is going on */
2515         if (!(test_bit(DPC_RESET_ACTIVE, &ha->dpc_flags) ||
2516             test_bit(DPC_RESET_HA, &ha->dpc_flags) ||
2517             test_bit(DPC_RETRY_RESET_HA, &ha->dpc_flags))) {
2518                 dev_state = qla4_8xxx_rd_32(ha, QLA82XX_CRB_DEV_STATE);
2519
2520                 if (qla4_8xxx_check_temp(ha)) {
2521                         ql4_printk(KERN_INFO, ha, "disabling pause"
2522                                    " transmit on port 0 & 1.\n");
2523                         qla4_8xxx_wr_32(ha, QLA82XX_CRB_NIU + 0x98,
2524                                         CRB_NIU_XG_PAUSE_CTL_P0 |
2525                                         CRB_NIU_XG_PAUSE_CTL_P1);
2526                         set_bit(DPC_HA_UNRECOVERABLE, &ha->dpc_flags);
2527                         qla4xxx_wake_dpc(ha);
2528                 } else if (dev_state == QLA82XX_DEV_NEED_RESET &&
2529                     !test_bit(DPC_RESET_HA, &ha->dpc_flags)) {
2530                         if (!ql4xdontresethba) {
2531                                 ql4_printk(KERN_INFO, ha, "%s: HW State: "
2532                                     "NEED RESET!\n", __func__);
2533                                 set_bit(DPC_RESET_HA, &ha->dpc_flags);
2534                                 qla4xxx_wake_dpc(ha);
2535                         }
2536                 } else if (dev_state == QLA82XX_DEV_NEED_QUIESCENT &&
2537                     !test_bit(DPC_HA_NEED_QUIESCENT, &ha->dpc_flags)) {
2538                         ql4_printk(KERN_INFO, ha, "%s: HW State: NEED QUIES!\n",
2539                             __func__);
2540                         set_bit(DPC_HA_NEED_QUIESCENT, &ha->dpc_flags);
2541                         qla4xxx_wake_dpc(ha);
2542                 } else  {
2543                         /* Check firmware health */
2544                         if (qla4_8xxx_check_fw_alive(ha)) {
2545                                 ql4_printk(KERN_INFO, ha, "disabling pause"
2546                                            " transmit on port 0 & 1.\n");
2547                                 qla4_8xxx_wr_32(ha, QLA82XX_CRB_NIU + 0x98,
2548                                                 CRB_NIU_XG_PAUSE_CTL_P0 |
2549                                                 CRB_NIU_XG_PAUSE_CTL_P1);
2550                                 halt_status = qla4_8xxx_rd_32(ha,
2551                                                 QLA82XX_PEG_HALT_STATUS1);
2552
2553                                 if (QLA82XX_FWERROR_CODE(halt_status) == 0x67)
2554                                         ql4_printk(KERN_ERR, ha, "%s:"
2555                                                    " Firmware aborted with"
2556                                                    " error code 0x00006700."
2557                                                    " Device is being reset\n",
2558                                                    __func__);
2559
2560                                 /* Since we cannot change dev_state in interrupt
2561                                  * context, set appropriate DPC flag then wakeup
2562                                  * DPC */
2563                                 if (halt_status & HALT_STATUS_UNRECOVERABLE)
2564                                         set_bit(DPC_HA_UNRECOVERABLE,
2565                                                 &ha->dpc_flags);
2566                                 else {
2567                                         ql4_printk(KERN_INFO, ha, "%s: detect "
2568                                                    "abort needed!\n", __func__);
2569                                         set_bit(DPC_RESET_HA, &ha->dpc_flags);
2570                                 }
2571                                 qla4xxx_mailbox_premature_completion(ha);
2572                                 qla4xxx_wake_dpc(ha);
2573                         }
2574                 }
2575         }
2576 }
2577
2578 static void qla4xxx_check_relogin_flash_ddb(struct iscsi_cls_session *cls_sess)
2579 {
2580         struct iscsi_session *sess;
2581         struct ddb_entry *ddb_entry;
2582         struct scsi_qla_host *ha;
2583
2584         sess = cls_sess->dd_data;
2585         ddb_entry = sess->dd_data;
2586         ha = ddb_entry->ha;
2587
2588         if (!(ddb_entry->ddb_type == FLASH_DDB))
2589                 return;
2590
2591         if (adapter_up(ha) && !test_bit(DF_RELOGIN, &ddb_entry->flags) &&
2592             !iscsi_is_session_online(cls_sess)) {
2593                 if (atomic_read(&ddb_entry->retry_relogin_timer) !=
2594                     INVALID_ENTRY) {
2595                         if (atomic_read(&ddb_entry->retry_relogin_timer) ==
2596                                         0) {
2597                                 atomic_set(&ddb_entry->retry_relogin_timer,
2598                                            INVALID_ENTRY);
2599                                 set_bit(DPC_RELOGIN_DEVICE, &ha->dpc_flags);
2600                                 set_bit(DF_RELOGIN, &ddb_entry->flags);
2601                                 DEBUG2(ql4_printk(KERN_INFO, ha,
2602                                        "%s: index [%d] login device\n",
2603                                         __func__, ddb_entry->fw_ddb_index));
2604                         } else
2605                                 atomic_dec(&ddb_entry->retry_relogin_timer);
2606                 }
2607         }
2608
2609         /* Wait for relogin to timeout */
2610         if (atomic_read(&ddb_entry->relogin_timer) &&
2611             (atomic_dec_and_test(&ddb_entry->relogin_timer) != 0)) {
2612                 /*
2613                  * If the relogin times out and the device is
2614                  * still NOT ONLINE then try and relogin again.
2615                  */
2616                 if (!iscsi_is_session_online(cls_sess)) {
2617                         /* Reset retry relogin timer */
2618                         atomic_inc(&ddb_entry->relogin_retry_count);
2619                         DEBUG2(ql4_printk(KERN_INFO, ha,
2620                                 "%s: index[%d] relogin timed out-retrying"
2621                                 " relogin (%d), retry (%d)\n", __func__,
2622                                 ddb_entry->fw_ddb_index,
2623                                 atomic_read(&ddb_entry->relogin_retry_count),
2624                                 ddb_entry->default_time2wait + 4));
2625                         set_bit(DPC_RELOGIN_DEVICE, &ha->dpc_flags);
2626                         atomic_set(&ddb_entry->retry_relogin_timer,
2627                                    ddb_entry->default_time2wait + 4);
2628                 }
2629         }
2630 }
2631
2632 /**
2633  * qla4xxx_timer - checks every second for work to do.
2634  * @ha: Pointer to host adapter structure.
2635  **/
2636 static void qla4xxx_timer(struct scsi_qla_host *ha)
2637 {
2638         int start_dpc = 0;
2639         uint16_t w;
2640
2641         iscsi_host_for_each_session(ha->host, qla4xxx_check_relogin_flash_ddb);
2642
2643         /* If we are in the middle of AER/EEH processing
2644          * skip any processing and reschedule the timer
2645          */
2646         if (test_bit(AF_EEH_BUSY, &ha->flags)) {
2647                 mod_timer(&ha->timer, jiffies + HZ);
2648                 return;
2649         }
2650
2651         /* Hardware read to trigger an EEH error during mailbox waits. */
2652         if (!pci_channel_offline(ha->pdev))
2653                 pci_read_config_word(ha->pdev, PCI_VENDOR_ID, &w);
2654
2655         if (is_qla8022(ha)) {
2656                 qla4_8xxx_watchdog(ha);
2657         }
2658
2659         if (!is_qla8022(ha)) {
2660                 /* Check for heartbeat interval. */
2661                 if (ha->firmware_options & FWOPT_HEARTBEAT_ENABLE &&
2662                     ha->heartbeat_interval != 0) {
2663                         ha->seconds_since_last_heartbeat++;
2664                         if (ha->seconds_since_last_heartbeat >
2665                             ha->heartbeat_interval + 2)
2666                                 set_bit(DPC_RESET_HA, &ha->dpc_flags);
2667                 }
2668         }
2669
2670         /* Process any deferred work. */
2671         if (!list_empty(&ha->work_list))
2672                 start_dpc++;
2673
2674         /* Wakeup the dpc routine for this adapter, if needed. */
2675         if (start_dpc ||
2676              test_bit(DPC_RESET_HA, &ha->dpc_flags) ||
2677              test_bit(DPC_RETRY_RESET_HA, &ha->dpc_flags) ||
2678              test_bit(DPC_RELOGIN_DEVICE, &ha->dpc_flags) ||
2679              test_bit(DPC_RESET_HA_FW_CONTEXT, &ha->dpc_flags) ||
2680              test_bit(DPC_RESET_HA_INTR, &ha->dpc_flags) ||
2681              test_bit(DPC_GET_DHCP_IP_ADDR, &ha->dpc_flags) ||
2682              test_bit(DPC_LINK_CHANGED, &ha->dpc_flags) ||
2683              test_bit(DPC_HA_UNRECOVERABLE, &ha->dpc_flags) ||
2684              test_bit(DPC_HA_NEED_QUIESCENT, &ha->dpc_flags) ||
2685              test_bit(DPC_AEN, &ha->dpc_flags)) {
2686                 DEBUG2(printk("scsi%ld: %s: scheduling dpc routine"
2687                               " - dpc flags = 0x%lx\n",
2688                               ha->host_no, __func__, ha->dpc_flags));
2689                 qla4xxx_wake_dpc(ha);
2690         }
2691
2692         /* Reschedule timer thread to call us back in one second */
2693         mod_timer(&ha->timer, jiffies + HZ);
2694
2695         DEBUG2(ha->seconds_since_last_intr++);
2696 }
2697
2698 /**
2699  * qla4xxx_cmd_wait - waits for all outstanding commands to complete
2700  * @ha: Pointer to host adapter structure.
2701  *
2702  * This routine stalls the driver until all outstanding commands are returned.
2703  * Caller must release the Hardware Lock prior to calling this routine.
2704  **/
2705 static int qla4xxx_cmd_wait(struct scsi_qla_host *ha)
2706 {
2707         uint32_t index = 0;
2708         unsigned long flags;
2709         struct scsi_cmnd *cmd;
2710
2711         unsigned long wtime = jiffies + (WAIT_CMD_TOV * HZ);
2712
2713         DEBUG2(ql4_printk(KERN_INFO, ha, "Wait up to %d seconds for cmds to "
2714             "complete\n", WAIT_CMD_TOV));
2715
2716         while (!time_after_eq(jiffies, wtime)) {
2717                 spin_lock_irqsave(&ha->hardware_lock, flags);
2718                 /* Find a command that hasn't completed. */
2719                 for (index = 0; index < ha->host->can_queue; index++) {
2720                         cmd = scsi_host_find_tag(ha->host, index);
2721                         /*
2722                          * We cannot just check if the index is valid,
2723                          * becase if we are run from the scsi eh, then
2724                          * the scsi/block layer is going to prevent
2725                          * the tag from being released.
2726                          */
2727                         if (cmd != NULL && CMD_SP(cmd))
2728                                 break;
2729                 }
2730                 spin_unlock_irqrestore(&ha->hardware_lock, flags);
2731
2732                 /* If No Commands are pending, wait is complete */
2733                 if (index == ha->host->can_queue)
2734                         return QLA_SUCCESS;
2735
2736                 msleep(1000);
2737         }
2738         /* If we timed out on waiting for commands to come back
2739          * return ERROR. */
2740         return QLA_ERROR;
2741 }
2742
2743 int qla4xxx_hw_reset(struct scsi_qla_host *ha)
2744 {
2745         uint32_t ctrl_status;
2746         unsigned long flags = 0;
2747
2748         DEBUG2(printk(KERN_ERR "scsi%ld: %s\n", ha->host_no, __func__));
2749
2750         if (ql4xxx_lock_drvr_wait(ha) != QLA_SUCCESS)
2751                 return QLA_ERROR;
2752
2753         spin_lock_irqsave(&ha->hardware_lock, flags);
2754
2755         /*
2756          * If the SCSI Reset Interrupt bit is set, clear it.
2757          * Otherwise, the Soft Reset won't work.
2758          */
2759         ctrl_status = readw(&ha->reg->ctrl_status);
2760         if ((ctrl_status & CSR_SCSI_RESET_INTR) != 0)
2761                 writel(set_rmask(CSR_SCSI_RESET_INTR), &ha->reg->ctrl_status);
2762
2763         /* Issue Soft Reset */
2764         writel(set_rmask(CSR_SOFT_RESET), &ha->reg->ctrl_status);
2765         readl(&ha->reg->ctrl_status);
2766
2767         spin_unlock_irqrestore(&ha->hardware_lock, flags);
2768         return QLA_SUCCESS;
2769 }
2770
2771 /**
2772  * qla4xxx_soft_reset - performs soft reset.
2773  * @ha: Pointer to host adapter structure.
2774  **/
2775 int qla4xxx_soft_reset(struct scsi_qla_host *ha)
2776 {
2777         uint32_t max_wait_time;
2778         unsigned long flags = 0;
2779         int status;
2780         uint32_t ctrl_status;
2781
2782         status = qla4xxx_hw_reset(ha);
2783         if (status != QLA_SUCCESS)
2784                 return status;
2785
2786         status = QLA_ERROR;
2787         /* Wait until the Network Reset Intr bit is cleared */
2788         max_wait_time = RESET_INTR_TOV;
2789         do {
2790                 spin_lock_irqsave(&ha->hardware_lock, flags);
2791                 ctrl_status = readw(&ha->reg->ctrl_status);
2792                 spin_unlock_irqrestore(&ha->hardware_lock, flags);
2793
2794                 if ((ctrl_status & CSR_NET_RESET_INTR) == 0)
2795                         break;
2796
2797                 msleep(1000);
2798         } while ((--max_wait_time));
2799
2800         if ((ctrl_status & CSR_NET_RESET_INTR) != 0) {
2801                 DEBUG2(printk(KERN_WARNING
2802                               "scsi%ld: Network Reset Intr not cleared by "
2803                               "Network function, clearing it now!\n",
2804                               ha->host_no));
2805                 spin_lock_irqsave(&ha->hardware_lock, flags);
2806                 writel(set_rmask(CSR_NET_RESET_INTR), &ha->reg->ctrl_status);
2807                 readl(&ha->reg->ctrl_status);
2808                 spin_unlock_irqrestore(&ha->hardware_lock, flags);
2809         }
2810
2811         /* Wait until the firmware tells us the Soft Reset is done */
2812         max_wait_time = SOFT_RESET_TOV;
2813         do {
2814                 spin_lock_irqsave(&ha->hardware_lock, flags);
2815                 ctrl_status = readw(&ha->reg->ctrl_status);
2816                 spin_unlock_irqrestore(&ha->hardware_lock, flags);
2817
2818                 if ((ctrl_status & CSR_SOFT_RESET) == 0) {
2819                         status = QLA_SUCCESS;
2820                         break;
2821                 }
2822
2823                 msleep(1000);
2824         } while ((--max_wait_time));
2825
2826         /*
2827          * Also, make sure that the SCSI Reset Interrupt bit has been cleared
2828          * after the soft reset has taken place.
2829          */
2830         spin_lock_irqsave(&ha->hardware_lock, flags);
2831         ctrl_status = readw(&ha->reg->ctrl_status);
2832         if ((ctrl_status & CSR_SCSI_RESET_INTR) != 0) {
2833                 writel(set_rmask(CSR_SCSI_RESET_INTR), &ha->reg->ctrl_status);
2834                 readl(&ha->reg->ctrl_status);
2835         }
2836         spin_unlock_irqrestore(&ha->hardware_lock, flags);
2837
2838         /* If soft reset fails then most probably the bios on other
2839          * function is also enabled.
2840          * Since the initialization is sequential the other fn
2841          * wont be able to acknowledge the soft reset.
2842          * Issue a force soft reset to workaround this scenario.
2843          */
2844         if (max_wait_time == 0) {
2845                 /* Issue Force Soft Reset */
2846                 spin_lock_irqsave(&ha->hardware_lock, flags);
2847                 writel(set_rmask(CSR_FORCE_SOFT_RESET), &ha->reg->ctrl_status);
2848                 readl(&ha->reg->ctrl_status);
2849                 spin_unlock_irqrestore(&ha->hardware_lock, flags);
2850                 /* Wait until the firmware tells us the Soft Reset is done */
2851                 max_wait_time = SOFT_RESET_TOV;
2852                 do {
2853                         spin_lock_irqsave(&ha->hardware_lock, flags);
2854                         ctrl_status = readw(&ha->reg->ctrl_status);
2855                         spin_unlock_irqrestore(&ha->hardware_lock, flags);
2856
2857                         if ((ctrl_status & CSR_FORCE_SOFT_RESET) == 0) {
2858                                 status = QLA_SUCCESS;
2859                                 break;
2860                         }
2861
2862                         msleep(1000);
2863                 } while ((--max_wait_time));
2864         }
2865
2866         return status;
2867 }
2868
2869 /**
2870  * qla4xxx_abort_active_cmds - returns all outstanding i/o requests to O.S.
2871  * @ha: Pointer to host adapter structure.
2872  * @res: returned scsi status
2873  *
2874  * This routine is called just prior to a HARD RESET to return all
2875  * outstanding commands back to the Operating System.
2876  * Caller should make sure that the following locks are released
2877  * before this calling routine: Hardware lock, and io_request_lock.
2878  **/
2879 static void qla4xxx_abort_active_cmds(struct scsi_qla_host *ha, int res)
2880 {
2881         struct srb *srb;
2882         int i;
2883         unsigned long flags;
2884
2885         spin_lock_irqsave(&ha->hardware_lock, flags);
2886         for (i = 0; i < ha->host->can_queue; i++) {
2887                 srb = qla4xxx_del_from_active_array(ha, i);
2888                 if (srb != NULL) {
2889                         srb->cmd->result = res;
2890                         kref_put(&srb->srb_ref, qla4xxx_srb_compl);
2891                 }
2892         }
2893         spin_unlock_irqrestore(&ha->hardware_lock, flags);
2894 }
2895
2896 void qla4xxx_dead_adapter_cleanup(struct scsi_qla_host *ha)
2897 {
2898         clear_bit(AF_ONLINE, &ha->flags);
2899
2900         /* Disable the board */
2901         ql4_printk(KERN_INFO, ha, "Disabling the board\n");
2902
2903         qla4xxx_abort_active_cmds(ha, DID_NO_CONNECT << 16);
2904         qla4xxx_mark_all_devices_missing(ha);
2905         clear_bit(AF_INIT_DONE, &ha->flags);
2906 }
2907
2908 static void qla4xxx_fail_session(struct iscsi_cls_session *cls_session)
2909 {
2910         struct iscsi_session *sess;
2911         struct ddb_entry *ddb_entry;
2912
2913         sess = cls_session->dd_data;
2914         ddb_entry = sess->dd_data;
2915         ddb_entry->fw_ddb_device_state = DDB_DS_SESSION_FAILED;
2916
2917         if (ddb_entry->ddb_type == FLASH_DDB)
2918                 iscsi_block_session(ddb_entry->sess);
2919         else
2920                 iscsi_session_failure(cls_session->dd_data,
2921                                       ISCSI_ERR_CONN_FAILED);
2922 }
2923
2924 /**
2925  * qla4xxx_recover_adapter - recovers adapter after a fatal error
2926  * @ha: Pointer to host adapter structure.
2927  **/
2928 static int qla4xxx_recover_adapter(struct scsi_qla_host *ha)
2929 {
2930         int status = QLA_ERROR;
2931         uint8_t reset_chip = 0;
2932         uint32_t dev_state;
2933         unsigned long wait;
2934
2935         /* Stall incoming I/O until we are done */
2936         scsi_block_requests(ha->host);
2937         clear_bit(AF_ONLINE, &ha->flags);
2938         clear_bit(AF_LINK_UP, &ha->flags);
2939
2940         DEBUG2(ql4_printk(KERN_INFO, ha, "%s: adapter OFFLINE\n", __func__));
2941
2942         set_bit(DPC_RESET_ACTIVE, &ha->dpc_flags);
2943
2944         iscsi_host_for_each_session(ha->host, qla4xxx_fail_session);
2945
2946         if (test_bit(DPC_RESET_HA, &ha->dpc_flags))
2947                 reset_chip = 1;
2948
2949         /* For the DPC_RESET_HA_INTR case (ISP-4xxx specific)
2950          * do not reset adapter, jump to initialize_adapter */
2951         if (test_bit(DPC_RESET_HA_INTR, &ha->dpc_flags)) {
2952                 status = QLA_SUCCESS;
2953                 goto recover_ha_init_adapter;
2954         }
2955
2956         /* For the ISP-82xx adapter, issue a stop_firmware if invoked
2957          * from eh_host_reset or ioctl module */
2958         if (is_qla8022(ha) && !reset_chip &&
2959             test_bit(DPC_RESET_HA_FW_CONTEXT, &ha->dpc_flags)) {
2960
2961                 DEBUG2(ql4_printk(KERN_INFO, ha,
2962                     "scsi%ld: %s - Performing stop_firmware...\n",
2963                     ha->host_no, __func__));
2964                 status = ha->isp_ops->reset_firmware(ha);
2965                 if (status == QLA_SUCCESS) {
2966                         if (!test_bit(AF_FW_RECOVERY, &ha->flags))
2967                                 qla4xxx_cmd_wait(ha);
2968                         ha->isp_ops->disable_intrs(ha);
2969                         qla4xxx_process_aen(ha, FLUSH_DDB_CHANGED_AENS);
2970                         qla4xxx_abort_active_cmds(ha, DID_RESET << 16);
2971                 } else {
2972                         /* If the stop_firmware fails then
2973                          * reset the entire chip */
2974                         reset_chip = 1;
2975                         clear_bit(DPC_RESET_HA_FW_CONTEXT, &ha->dpc_flags);
2976                         set_bit(DPC_RESET_HA, &ha->dpc_flags);
2977                 }
2978         }
2979
2980         /* Issue full chip reset if recovering from a catastrophic error,
2981          * or if stop_firmware fails for ISP-82xx.
2982          * This is the default case for ISP-4xxx */
2983         if (!is_qla8022(ha) || reset_chip) {
2984                 if (!is_qla8022(ha))
2985                         goto chip_reset;
2986
2987                 /* Check if 82XX firmware is alive or not
2988                  * We may have arrived here from NEED_RESET
2989                  * detection only */
2990                 if (test_bit(AF_FW_RECOVERY, &ha->flags))
2991                         goto chip_reset;
2992
2993                 wait = jiffies + (FW_ALIVE_WAIT_TOV * HZ);
2994                 while (time_before(jiffies, wait)) {
2995                         if (qla4_8xxx_check_fw_alive(ha)) {
2996                                 qla4xxx_mailbox_premature_completion(ha);
2997                                 break;
2998                         }
2999
3000                         set_current_state(TASK_UNINTERRUPTIBLE);
3001                         schedule_timeout(HZ);
3002                 }
3003 chip_reset:
3004                 if (!test_bit(AF_FW_RECOVERY, &ha->flags))
3005                         qla4xxx_cmd_wait(ha);
3006
3007                 qla4xxx_process_aen(ha, FLUSH_DDB_CHANGED_AENS);
3008                 qla4xxx_abort_active_cmds(ha, DID_RESET << 16);
3009                 DEBUG2(ql4_printk(KERN_INFO, ha,
3010                     "scsi%ld: %s - Performing chip reset..\n",
3011                     ha->host_no, __func__));
3012                 status = ha->isp_ops->reset_chip(ha);
3013         }
3014
3015         /* Flush any pending ddb changed AENs */
3016         qla4xxx_process_aen(ha, FLUSH_DDB_CHANGED_AENS);
3017
3018 recover_ha_init_adapter:
3019         /* Upon successful firmware/chip reset, re-initialize the adapter */
3020         if (status == QLA_SUCCESS) {
3021                 /* For ISP-4xxx, force function 1 to always initialize
3022                  * before function 3 to prevent both funcions from
3023                  * stepping on top of the other */
3024                 if (!is_qla8022(ha) && (ha->mac_index == 3))
3025                         ssleep(6);
3026
3027                 /* NOTE: AF_ONLINE flag set upon successful completion of
3028                  *       qla4xxx_initialize_adapter */
3029                 status = qla4xxx_initialize_adapter(ha, RESET_ADAPTER);
3030         }
3031
3032         /* Retry failed adapter initialization, if necessary
3033          * Do not retry initialize_adapter for RESET_HA_INTR (ISP-4xxx specific)
3034          * case to prevent ping-pong resets between functions */
3035         if (!test_bit(AF_ONLINE, &ha->flags) &&
3036             !test_bit(DPC_RESET_HA_INTR, &ha->dpc_flags)) {
3037                 /* Adapter initialization failed, see if we can retry
3038                  * resetting the ha.
3039                  * Since we don't want to block the DPC for too long
3040                  * with multiple resets in the same thread,
3041                  * utilize DPC to retry */
3042                 if (is_qla8022(ha)) {
3043                         qla4_8xxx_idc_lock(ha);
3044                         dev_state = qla4_8xxx_rd_32(ha, QLA82XX_CRB_DEV_STATE);
3045                         qla4_8xxx_idc_unlock(ha);
3046                         if (dev_state == QLA82XX_DEV_FAILED) {
3047                                 ql4_printk(KERN_INFO, ha, "%s: don't retry "
3048                                            "recover adapter. H/W is in Failed "
3049                                            "state\n", __func__);
3050                                 qla4xxx_dead_adapter_cleanup(ha);
3051                                 clear_bit(DPC_RETRY_RESET_HA, &ha->dpc_flags);
3052                                 clear_bit(DPC_RESET_HA, &ha->dpc_flags);
3053                                 clear_bit(DPC_RESET_HA_FW_CONTEXT,
3054                                                 &ha->dpc_flags);
3055                                 status = QLA_ERROR;
3056
3057                                 goto exit_recover;
3058                         }
3059                 }
3060
3061                 if (!test_bit(DPC_RETRY_RESET_HA, &ha->dpc_flags)) {
3062                         ha->retry_reset_ha_cnt = MAX_RESET_HA_RETRIES;
3063                         DEBUG2(printk("scsi%ld: recover adapter - retrying "
3064                                       "(%d) more times\n", ha->host_no,
3065                                       ha->retry_reset_ha_cnt));
3066                         set_bit(DPC_RETRY_RESET_HA, &ha->dpc_flags);
3067                         status = QLA_ERROR;
3068                 } else {
3069                         if (ha->retry_reset_ha_cnt > 0) {
3070                                 /* Schedule another Reset HA--DPC will retry */
3071                                 ha->retry_reset_ha_cnt--;
3072                                 DEBUG2(printk("scsi%ld: recover adapter - "
3073                                               "retry remaining %d\n",
3074                                               ha->host_no,
3075                                               ha->retry_reset_ha_cnt));
3076                                 status = QLA_ERROR;
3077                         }
3078
3079                         if (ha->retry_reset_ha_cnt == 0) {
3080                                 /* Recover adapter retries have been exhausted.
3081                                  * Adapter DEAD */
3082                                 DEBUG2(printk("scsi%ld: recover adapter "
3083                                               "failed - board disabled\n",
3084                                               ha->host_no));
3085                                 qla4xxx_dead_adapter_cleanup(ha);
3086                                 clear_bit(DPC_RETRY_RESET_HA, &ha->dpc_flags);
3087                                 clear_bit(DPC_RESET_HA, &ha->dpc_flags);
3088                                 clear_bit(DPC_RESET_HA_FW_CONTEXT,
3089                                           &ha->dpc_flags);
3090                                 status = QLA_ERROR;
3091                         }
3092                 }
3093         } else {
3094                 clear_bit(DPC_RESET_HA, &ha->dpc_flags);
3095                 clear_bit(DPC_RESET_HA_FW_CONTEXT, &ha->dpc_flags);
3096                 clear_bit(DPC_RETRY_RESET_HA, &ha->dpc_flags);
3097         }
3098
3099 exit_recover:
3100         ha->adapter_error_count++;
3101
3102         if (test_bit(AF_ONLINE, &ha->flags))
3103                 ha->isp_ops->enable_intrs(ha);
3104
3105         scsi_unblock_requests(ha->host);
3106
3107         clear_bit(DPC_RESET_ACTIVE, &ha->dpc_flags);
3108         DEBUG2(printk("scsi%ld: recover adapter: %s\n", ha->host_no,
3109             status == QLA_ERROR ? "FAILED" : "SUCCEEDED"));
3110
3111         return status;
3112 }
3113
3114 static void qla4xxx_relogin_devices(struct iscsi_cls_session *cls_session)
3115 {
3116         struct iscsi_session *sess;
3117         struct ddb_entry *ddb_entry;
3118         struct scsi_qla_host *ha;
3119
3120         sess = cls_session->dd_data;
3121         ddb_entry = sess->dd_data;
3122         ha = ddb_entry->ha;
3123         if (!iscsi_is_session_online(cls_session)) {
3124                 if (ddb_entry->fw_ddb_device_state == DDB_DS_SESSION_ACTIVE) {
3125                         ql4_printk(KERN_INFO, ha, "scsi%ld: %s: ddb[%d]"
3126                                    " unblock session\n", ha->host_no, __func__,
3127                                    ddb_entry->fw_ddb_index);
3128                         iscsi_unblock_session(ddb_entry->sess);
3129                 } else {
3130                         /* Trigger relogin */
3131                         if (ddb_entry->ddb_type == FLASH_DDB) {
3132                                 if (!test_bit(DF_RELOGIN, &ddb_entry->flags))
3133                                         qla4xxx_arm_relogin_timer(ddb_entry);
3134                         } else
3135                                 iscsi_session_failure(cls_session->dd_data,
3136                                                       ISCSI_ERR_CONN_FAILED);
3137                 }
3138         }
3139 }
3140
3141 int qla4xxx_unblock_flash_ddb(struct iscsi_cls_session *cls_session)
3142 {
3143         struct iscsi_session *sess;
3144         struct ddb_entry *ddb_entry;
3145         struct scsi_qla_host *ha;
3146
3147         sess = cls_session->dd_data;
3148         ddb_entry = sess->dd_data;
3149         ha = ddb_entry->ha;
3150         ql4_printk(KERN_INFO, ha, "scsi%ld: %s: ddb[%d]"
3151                    " unblock session\n", ha->host_no, __func__,
3152                    ddb_entry->fw_ddb_index);
3153
3154         iscsi_unblock_session(ddb_entry->sess);
3155
3156         /* Start scan target */
3157         if (test_bit(AF_ONLINE, &ha->flags)) {
3158                 ql4_printk(KERN_INFO, ha, "scsi%ld: %s: ddb[%d]"
3159                            " start scan\n", ha->host_no, __func__,
3160                            ddb_entry->fw_ddb_index);
3161                 scsi_queue_work(ha->host, &ddb_entry->sess->scan_work);
3162         }
3163         return QLA_SUCCESS;
3164 }
3165
3166 int qla4xxx_unblock_ddb(struct iscsi_cls_session *cls_session)
3167 {
3168         struct iscsi_session *sess;
3169         struct ddb_entry *ddb_entry;
3170         struct scsi_qla_host *ha;
3171         int status = QLA_SUCCESS;
3172
3173         sess = cls_session->dd_data;
3174         ddb_entry = sess->dd_data;
3175         ha = ddb_entry->ha;
3176         ql4_printk(KERN_INFO, ha, "scsi%ld: %s: ddb[%d]"
3177                    " unblock user space session\n", ha->host_no, __func__,
3178                    ddb_entry->fw_ddb_index);
3179
3180         if (!iscsi_is_session_online(cls_session)) {
3181                 iscsi_conn_start(ddb_entry->conn);
3182                 iscsi_conn_login_event(ddb_entry->conn,
3183                                        ISCSI_CONN_STATE_LOGGED_IN);
3184         } else {
3185                 ql4_printk(KERN_INFO, ha,
3186                            "scsi%ld: %s: ddb[%d] session [%d] already logged in\n",
3187                            ha->host_no, __func__, ddb_entry->fw_ddb_index,
3188                            cls_session->sid);
3189                 status = QLA_ERROR;
3190         }
3191
3192         return status;
3193 }
3194
3195 static void qla4xxx_relogin_all_devices(struct scsi_qla_host *ha)
3196 {
3197         iscsi_host_for_each_session(ha->host, qla4xxx_relogin_devices);
3198 }
3199
3200 static void qla4xxx_relogin_flash_ddb(struct iscsi_cls_session *cls_sess)
3201 {
3202         uint16_t relogin_timer;
3203         struct iscsi_session *sess;
3204         struct ddb_entry *ddb_entry;
3205         struct scsi_qla_host *ha;
3206
3207         sess = cls_sess->dd_data;
3208         ddb_entry = sess->dd_data;
3209         ha = ddb_entry->ha;
3210
3211         relogin_timer = max(ddb_entry->default_relogin_timeout,
3212                             (uint16_t)RELOGIN_TOV);
3213         atomic_set(&ddb_entry->relogin_timer, relogin_timer);
3214
3215         DEBUG2(ql4_printk(KERN_INFO, ha,
3216                           "scsi%ld: Relogin index [%d]. TOV=%d\n", ha->host_no,
3217                           ddb_entry->fw_ddb_index, relogin_timer));
3218
3219         qla4xxx_login_flash_ddb(cls_sess);
3220 }
3221
3222 static void qla4xxx_dpc_relogin(struct iscsi_cls_session *cls_sess)
3223 {
3224         struct iscsi_session *sess;
3225         struct ddb_entry *ddb_entry;
3226         struct scsi_qla_host *ha;
3227
3228         sess = cls_sess->dd_data;
3229         ddb_entry = sess->dd_data;
3230         ha = ddb_entry->ha;
3231
3232         if (!(ddb_entry->ddb_type == FLASH_DDB))
3233                 return;
3234
3235         if (test_and_clear_bit(DF_RELOGIN, &ddb_entry->flags) &&
3236             !iscsi_is_session_online(cls_sess)) {
3237                 DEBUG2(ql4_printk(KERN_INFO, ha,
3238                                   "relogin issued\n"));
3239                 qla4xxx_relogin_flash_ddb(cls_sess);
3240         }
3241 }
3242
3243 void qla4xxx_wake_dpc(struct scsi_qla_host *ha)
3244 {
3245         if (ha->dpc_thread)
3246                 queue_work(ha->dpc_thread, &ha->dpc_work);
3247 }
3248
3249 static struct qla4_work_evt *
3250 qla4xxx_alloc_work(struct scsi_qla_host *ha, uint32_t data_size,
3251                    enum qla4_work_type type)
3252 {
3253         struct qla4_work_evt *e;
3254         uint32_t size = sizeof(struct qla4_work_evt) + data_size;
3255
3256         e = kzalloc(size, GFP_ATOMIC);
3257         if (!e)
3258                 return NULL;
3259
3260         INIT_LIST_HEAD(&e->list);
3261         e->type = type;
3262         return e;
3263 }
3264
3265 static void qla4xxx_post_work(struct scsi_qla_host *ha,
3266                              struct qla4_work_evt *e)
3267 {
3268         unsigned long flags;
3269
3270         spin_lock_irqsave(&ha->work_lock, flags);
3271         list_add_tail(&e->list, &ha->work_list);
3272         spin_unlock_irqrestore(&ha->work_lock, flags);
3273         qla4xxx_wake_dpc(ha);
3274 }
3275
3276 int qla4xxx_post_aen_work(struct scsi_qla_host *ha,
3277                           enum iscsi_host_event_code aen_code,
3278                           uint32_t data_size, uint8_t *data)
3279 {
3280         struct qla4_work_evt *e;
3281
3282         e = qla4xxx_alloc_work(ha, data_size, QLA4_EVENT_AEN);
3283         if (!e)
3284                 return QLA_ERROR;
3285
3286         e->u.aen.code = aen_code;
3287         e->u.aen.data_size = data_size;
3288         memcpy(e->u.aen.data, data, data_size);
3289
3290         qla4xxx_post_work(ha, e);
3291
3292         return QLA_SUCCESS;
3293 }
3294
3295 int qla4xxx_post_ping_evt_work(struct scsi_qla_host *ha,
3296                                uint32_t status, uint32_t pid,
3297                                uint32_t data_size, uint8_t *data)
3298 {
3299         struct qla4_work_evt *e;
3300
3301         e = qla4xxx_alloc_work(ha, data_size, QLA4_EVENT_PING_STATUS);
3302         if (!e)
3303                 return QLA_ERROR;
3304
3305         e->u.ping.status = status;
3306         e->u.ping.pid = pid;
3307         e->u.ping.data_size = data_size;
3308         memcpy(e->u.ping.data, data, data_size);
3309
3310         qla4xxx_post_work(ha, e);
3311
3312         return QLA_SUCCESS;
3313 }
3314
3315 static void qla4xxx_do_work(struct scsi_qla_host *ha)
3316 {
3317         struct qla4_work_evt *e, *tmp;
3318         unsigned long flags;
3319         LIST_HEAD(work);
3320
3321         spin_lock_irqsave(&ha->work_lock, flags);
3322         list_splice_init(&ha->work_list, &work);
3323         spin_unlock_irqrestore(&ha->work_lock, flags);
3324
3325         list_for_each_entry_safe(e, tmp, &work, list) {
3326                 list_del_init(&e->list);
3327
3328                 switch (e->type) {
3329                 case QLA4_EVENT_AEN:
3330                         iscsi_post_host_event(ha->host_no,
3331                                               &qla4xxx_iscsi_transport,
3332                                               e->u.aen.code,
3333                                               e->u.aen.data_size,
3334                                               e->u.aen.data);
3335                         break;
3336                 case QLA4_EVENT_PING_STATUS:
3337                         iscsi_ping_comp_event(ha->host_no,
3338                                               &qla4xxx_iscsi_transport,
3339                                               e->u.ping.status,
3340                                               e->u.ping.pid,
3341                                               e->u.ping.data_size,
3342                                               e->u.ping.data);
3343                         break;
3344                 default:
3345                         ql4_printk(KERN_WARNING, ha, "event type: 0x%x not "
3346                                    "supported", e->type);
3347                 }
3348                 kfree(e);
3349         }
3350 }
3351
3352 /**
3353  * qla4xxx_do_dpc - dpc routine
3354  * @data: in our case pointer to adapter structure
3355  *
3356  * This routine is a task that is schedule by the interrupt handler
3357  * to perform the background processing for interrupts.  We put it
3358  * on a task queue that is consumed whenever the scheduler runs; that's
3359  * so you can do anything (i.e. put the process to sleep etc).  In fact,
3360  * the mid-level tries to sleep when it reaches the driver threshold
3361  * "host->can_queue". This can cause a panic if we were in our interrupt code.
3362  **/
3363 static void qla4xxx_do_dpc(struct work_struct *work)
3364 {
3365         struct scsi_qla_host *ha =
3366                 container_of(work, struct scsi_qla_host, dpc_work);
3367         int status = QLA_ERROR;
3368
3369         DEBUG2(printk("scsi%ld: %s: DPC handler waking up."
3370             "flags = 0x%08lx, dpc_flags = 0x%08lx\n",
3371             ha->host_no, __func__, ha->flags, ha->dpc_flags))
3372
3373         /* Initialization not yet finished. Don't do anything yet. */
3374         if (!test_bit(AF_INIT_DONE, &ha->flags))
3375                 return;
3376
3377         if (test_bit(AF_EEH_BUSY, &ha->flags)) {
3378                 DEBUG2(printk(KERN_INFO "scsi%ld: %s: flags = %lx\n",
3379                     ha->host_no, __func__, ha->flags));
3380                 return;
3381         }
3382
3383         /* post events to application */
3384         qla4xxx_do_work(ha);
3385
3386         if (is_qla8022(ha)) {
3387                 if (test_bit(DPC_HA_UNRECOVERABLE, &ha->dpc_flags)) {
3388                         qla4_8xxx_idc_lock(ha);
3389                         qla4_8xxx_wr_32(ha, QLA82XX_CRB_DEV_STATE,
3390                             QLA82XX_DEV_FAILED);
3391                         qla4_8xxx_idc_unlock(ha);
3392                         ql4_printk(KERN_INFO, ha, "HW State: FAILED\n");
3393                         qla4_8xxx_device_state_handler(ha);
3394                 }
3395                 if (test_and_clear_bit(DPC_HA_NEED_QUIESCENT, &ha->dpc_flags)) {
3396                         qla4_8xxx_need_qsnt_handler(ha);
3397                 }
3398         }
3399
3400         if (!test_bit(DPC_RESET_ACTIVE, &ha->dpc_flags) &&
3401             (test_bit(DPC_RESET_HA, &ha->dpc_flags) ||
3402             test_bit(DPC_RESET_HA_INTR, &ha->dpc_flags) ||
3403             test_bit(DPC_RESET_HA_FW_CONTEXT, &ha->dpc_flags))) {
3404                 if (ql4xdontresethba) {
3405                         DEBUG2(printk("scsi%ld: %s: Don't Reset HBA\n",
3406                             ha->host_no, __func__));
3407                         clear_bit(DPC_RESET_HA, &ha->dpc_flags);
3408                         clear_bit(DPC_RESET_HA_INTR, &ha->dpc_flags);
3409                         clear_bit(DPC_RESET_HA_FW_CONTEXT, &ha->dpc_flags);
3410                         goto dpc_post_reset_ha;
3411                 }
3412                 if (test_bit(DPC_RESET_HA_FW_CONTEXT, &ha->dpc_flags) ||
3413                     test_bit(DPC_RESET_HA, &ha->dpc_flags))
3414                         qla4xxx_recover_adapter(ha);
3415
3416                 if (test_bit(DPC_RESET_HA_INTR, &ha->dpc_flags)) {
3417                         uint8_t wait_time = RESET_INTR_TOV;
3418
3419                         while ((readw(&ha->reg->ctrl_status) &
3420                                 (CSR_SOFT_RESET | CSR_FORCE_SOFT_RESET)) != 0) {
3421                                 if (--wait_time == 0)
3422                                         break;
3423                                 msleep(1000);
3424                         }
3425                         if (wait_time == 0)
3426                                 DEBUG2(printk("scsi%ld: %s: SR|FSR "
3427                                               "bit not cleared-- resetting\n",
3428                                               ha->host_no, __func__));
3429                         qla4xxx_abort_active_cmds(ha, DID_RESET << 16);
3430                         if (ql4xxx_lock_drvr_wait(ha) == QLA_SUCCESS) {
3431                                 qla4xxx_process_aen(ha, FLUSH_DDB_CHANGED_AENS);
3432                                 status = qla4xxx_recover_adapter(ha);
3433                         }
3434                         clear_bit(DPC_RESET_HA_INTR, &ha->dpc_flags);
3435                         if (status == QLA_SUCCESS)
3436                                 ha->isp_ops->enable_intrs(ha);
3437                 }
3438         }
3439
3440 dpc_post_reset_ha:
3441         /* ---- process AEN? --- */
3442         if (test_and_clear_bit(DPC_AEN, &ha->dpc_flags))
3443                 qla4xxx_process_aen(ha, PROCESS_ALL_AENS);
3444
3445         /* ---- Get DHCP IP Address? --- */
3446         if (test_and_clear_bit(DPC_GET_DHCP_IP_ADDR, &ha->dpc_flags))
3447                 qla4xxx_get_dhcp_ip_address(ha);
3448
3449         /* ---- relogin device? --- */
3450         if (adapter_up(ha) &&
3451             test_and_clear_bit(DPC_RELOGIN_DEVICE, &ha->dpc_flags)) {
3452                 iscsi_host_for_each_session(ha->host, qla4xxx_dpc_relogin);
3453         }
3454
3455         /* ---- link change? --- */
3456         if (test_and_clear_bit(DPC_LINK_CHANGED, &ha->dpc_flags)) {
3457                 if (!test_bit(AF_LINK_UP, &ha->flags)) {
3458                         /* ---- link down? --- */
3459                         qla4xxx_mark_all_devices_missing(ha);
3460                 } else {
3461                         /* ---- link up? --- *
3462                          * F/W will auto login to all devices ONLY ONCE after
3463                          * link up during driver initialization and runtime
3464                          * fatal error recovery.  Therefore, the driver must
3465                          * manually relogin to devices when recovering from
3466                          * connection failures, logouts, expired KATO, etc. */
3467                         if (test_and_clear_bit(AF_BUILD_DDB_LIST, &ha->flags)) {
3468                                 qla4xxx_build_ddb_list(ha, ha->is_reset);
3469                                 iscsi_host_for_each_session(ha->host,
3470                                                 qla4xxx_login_flash_ddb);
3471                         } else
3472                                 qla4xxx_relogin_all_devices(ha);
3473                 }
3474         }
3475 }
3476
3477 /**
3478  * qla4xxx_free_adapter - release the adapter
3479  * @ha: pointer to adapter structure
3480  **/
3481 static void qla4xxx_free_adapter(struct scsi_qla_host *ha)
3482 {
3483         qla4xxx_abort_active_cmds(ha, DID_NO_CONNECT << 16);
3484
3485         if (test_bit(AF_INTERRUPTS_ON, &ha->flags)) {
3486                 /* Turn-off interrupts on the card. */
3487                 ha->isp_ops->disable_intrs(ha);
3488         }
3489
3490         if (is_qla40XX(ha)) {
3491                 writel(set_rmask(CSR_SCSI_PROCESSOR_INTR),
3492                        &ha->reg->ctrl_status);
3493                 readl(&ha->reg->ctrl_status);
3494         } else if (is_qla8022(ha)) {
3495                 writel(0, &ha->qla4_8xxx_reg->host_int);
3496                 readl(&ha->qla4_8xxx_reg->host_int);
3497         }
3498
3499         /* Remove timer thread, if present */
3500         if (ha->timer_active)
3501                 qla4xxx_stop_timer(ha);
3502
3503         /* Kill the kernel thread for this host */
3504         if (ha->dpc_thread)
3505                 destroy_workqueue(ha->dpc_thread);
3506
3507         /* Kill the kernel thread for this host */
3508         if (ha->task_wq)
3509                 destroy_workqueue(ha->task_wq);
3510
3511         /* Put firmware in known state */
3512         ha->isp_ops->reset_firmware(ha);
3513
3514         if (is_qla8022(ha)) {
3515                 qla4_8xxx_idc_lock(ha);
3516                 qla4_8xxx_clear_drv_active(ha);
3517                 qla4_8xxx_idc_unlock(ha);
3518         }
3519
3520         /* Detach interrupts */
3521         if (test_and_clear_bit(AF_IRQ_ATTACHED, &ha->flags))
3522                 qla4xxx_free_irqs(ha);
3523
3524         /* free extra memory */
3525         qla4xxx_mem_free(ha);
3526 }
3527
3528 int qla4_8xxx_iospace_config(struct scsi_qla_host *ha)
3529 {
3530         int status = 0;
3531         unsigned long mem_base, mem_len, db_base, db_len;
3532         struct pci_dev *pdev = ha->pdev;
3533
3534         status = pci_request_regions(pdev, DRIVER_NAME);
3535         if (status) {
3536                 printk(KERN_WARNING
3537                     "scsi(%ld) Failed to reserve PIO regions (%s) "
3538                     "status=%d\n", ha->host_no, pci_name(pdev), status);
3539                 goto iospace_error_exit;
3540         }
3541
3542         DEBUG2(printk(KERN_INFO "%s: revision-id=%d\n",
3543             __func__, pdev->revision));
3544         ha->revision_id = pdev->revision;
3545
3546         /* remap phys address */
3547         mem_base = pci_resource_start(pdev, 0); /* 0 is for BAR 0 */
3548         mem_len = pci_resource_len(pdev, 0);
3549         DEBUG2(printk(KERN_INFO "%s: ioremap from %lx a size of %lx\n",
3550             __func__, mem_base, mem_len));
3551
3552         /* mapping of pcibase pointer */
3553         ha->nx_pcibase = (unsigned long)ioremap(mem_base, mem_len);
3554         if (!ha->nx_pcibase) {
3555                 printk(KERN_ERR
3556                     "cannot remap MMIO (%s), aborting\n", pci_name(pdev));
3557                 pci_release_regions(ha->pdev);
3558                 goto iospace_error_exit;
3559         }
3560
3561         /* Mapping of IO base pointer, door bell read and write pointer */
3562
3563         /* mapping of IO base pointer */
3564         ha->qla4_8xxx_reg =
3565             (struct device_reg_82xx  __iomem *)((uint8_t *)ha->nx_pcibase +
3566             0xbc000 + (ha->pdev->devfn << 11));
3567
3568         db_base = pci_resource_start(pdev, 4);  /* doorbell is on bar 4 */
3569         db_len = pci_resource_len(pdev, 4);
3570
3571         ha->nx_db_wr_ptr = (ha->pdev->devfn == 4 ? QLA82XX_CAM_RAM_DB1 :
3572             QLA82XX_CAM_RAM_DB2);
3573
3574         return 0;
3575 iospace_error_exit:
3576         return -ENOMEM;
3577 }
3578
3579 /***
3580  * qla4xxx_iospace_config - maps registers
3581  * @ha: pointer to adapter structure
3582  *
3583  * This routines maps HBA's registers from the pci address space
3584  * into the kernel virtual address space for memory mapped i/o.
3585  **/
3586 int qla4xxx_iospace_config(struct scsi_qla_host *ha)
3587 {
3588         unsigned long pio, pio_len, pio_flags;
3589         unsigned long mmio, mmio_len, mmio_flags;
3590
3591         pio = pci_resource_start(ha->pdev, 0);
3592         pio_len = pci_resource_len(ha->pdev, 0);
3593         pio_flags = pci_resource_flags(ha->pdev, 0);
3594         if (pio_flags & IORESOURCE_IO) {
3595                 if (pio_len < MIN_IOBASE_LEN) {
3596                         ql4_printk(KERN_WARNING, ha,
3597                                 "Invalid PCI I/O region size\n");
3598                         pio = 0;
3599                 }
3600         } else {
3601                 ql4_printk(KERN_WARNING, ha, "region #0 not a PIO resource\n");
3602                 pio = 0;
3603         }
3604
3605         /* Use MMIO operations for all accesses. */
3606         mmio = pci_resource_start(ha->pdev, 1);
3607         mmio_len = pci_resource_len(ha->pdev, 1);
3608         mmio_flags = pci_resource_flags(ha->pdev, 1);
3609
3610         if (!(mmio_flags & IORESOURCE_MEM)) {
3611                 ql4_printk(KERN_ERR, ha,
3612                     "region #0 not an MMIO resource, aborting\n");
3613
3614                 goto iospace_error_exit;
3615         }
3616
3617         if (mmio_len < MIN_IOBASE_LEN) {
3618                 ql4_printk(KERN_ERR, ha,
3619                     "Invalid PCI mem region size, aborting\n");
3620                 goto iospace_error_exit;
3621         }
3622
3623         if (pci_request_regions(ha->pdev, DRIVER_NAME)) {
3624                 ql4_printk(KERN_WARNING, ha,
3625                     "Failed to reserve PIO/MMIO regions\n");
3626
3627                 goto iospace_error_exit;
3628         }
3629
3630         ha->pio_address = pio;
3631         ha->pio_length = pio_len;
3632         ha->reg = ioremap(mmio, MIN_IOBASE_LEN);
3633         if (!ha->reg) {
3634                 ql4_printk(KERN_ERR, ha,
3635                     "cannot remap MMIO, aborting\n");
3636
3637                 goto iospace_error_exit;
3638         }
3639
3640         return 0;
3641
3642 iospace_error_exit:
3643         return -ENOMEM;
3644 }
3645
3646 static struct isp_operations qla4xxx_isp_ops = {
3647         .iospace_config         = qla4xxx_iospace_config,
3648         .pci_config             = qla4xxx_pci_config,
3649         .disable_intrs          = qla4xxx_disable_intrs,
3650         .enable_intrs           = qla4xxx_enable_intrs,
3651         .start_firmware         = qla4xxx_start_firmware,
3652         .intr_handler           = qla4xxx_intr_handler,
3653         .interrupt_service_routine = qla4xxx_interrupt_service_routine,
3654         .reset_chip             = qla4xxx_soft_reset,
3655         .reset_firmware         = qla4xxx_hw_reset,
3656         .queue_iocb             = qla4xxx_queue_iocb,
3657         .complete_iocb          = qla4xxx_complete_iocb,
3658         .rd_shdw_req_q_out      = qla4xxx_rd_shdw_req_q_out,
3659         .rd_shdw_rsp_q_in       = qla4xxx_rd_shdw_rsp_q_in,
3660         .get_sys_info           = qla4xxx_get_sys_info,
3661 };
3662
3663 static struct isp_operations qla4_8xxx_isp_ops = {
3664         .iospace_config         = qla4_8xxx_iospace_config,
3665         .pci_config             = qla4_8xxx_pci_config,
3666         .disable_intrs          = qla4_8xxx_disable_intrs,
3667         .enable_intrs           = qla4_8xxx_enable_intrs,
3668         .start_firmware         = qla4_8xxx_load_risc,
3669         .intr_handler           = qla4_8xxx_intr_handler,
3670         .interrupt_service_routine = qla4_8xxx_interrupt_service_routine,
3671         .reset_chip             = qla4_8xxx_isp_reset,
3672         .reset_firmware         = qla4_8xxx_stop_firmware,
3673         .queue_iocb             = qla4_8xxx_queue_iocb,
3674         .complete_iocb          = qla4_8xxx_complete_iocb,
3675         .rd_shdw_req_q_out      = qla4_8xxx_rd_shdw_req_q_out,
3676         .rd_shdw_rsp_q_in       = qla4_8xxx_rd_shdw_rsp_q_in,
3677         .get_sys_info           = qla4_8xxx_get_sys_info,
3678 };
3679
3680 uint16_t qla4xxx_rd_shdw_req_q_out(struct scsi_qla_host *ha)
3681 {
3682         return (uint16_t)le32_to_cpu(ha->shadow_regs->req_q_out);
3683 }
3684
3685 uint16_t qla4_8xxx_rd_shdw_req_q_out(struct scsi_qla_host *ha)
3686 {
3687         return (uint16_t)le32_to_cpu(readl(&ha->qla4_8xxx_reg->req_q_out));
3688 }
3689
3690 uint16_t qla4xxx_rd_shdw_rsp_q_in(struct scsi_qla_host *ha)
3691 {
3692         return (uint16_t)le32_to_cpu(ha->shadow_regs->rsp_q_in);
3693 }
3694
3695 uint16_t qla4_8xxx_rd_shdw_rsp_q_in(struct scsi_qla_host *ha)
3696 {
3697         return (uint16_t)le32_to_cpu(readl(&ha->qla4_8xxx_reg->rsp_q_in));
3698 }
3699
3700 static ssize_t qla4xxx_show_boot_eth_info(void *data, int type, char *buf)
3701 {
3702         struct scsi_qla_host *ha = data;
3703         char *str = buf;
3704         int rc;
3705
3706         switch (type) {
3707         case ISCSI_BOOT_ETH_FLAGS:
3708                 rc = sprintf(str, "%d\n", SYSFS_FLAG_FW_SEL_BOOT);
3709                 break;
3710         case ISCSI_BOOT_ETH_INDEX:
3711                 rc = sprintf(str, "0\n");
3712                 break;
3713         case ISCSI_BOOT_ETH_MAC:
3714                 rc = sysfs_format_mac(str, ha->my_mac,
3715                                       MAC_ADDR_LEN);
3716                 break;
3717         default:
3718                 rc = -ENOSYS;
3719                 break;
3720         }
3721         return rc;
3722 }
3723
3724 static umode_t qla4xxx_eth_get_attr_visibility(void *data, int type)
3725 {
3726         int rc;
3727
3728         switch (type) {
3729         case ISCSI_BOOT_ETH_FLAGS:
3730         case ISCSI_BOOT_ETH_MAC:
3731         case ISCSI_BOOT_ETH_INDEX:
3732                 rc = S_IRUGO;
3733                 break;
3734         default:
3735                 rc = 0;
3736                 break;
3737         }
3738         return rc;
3739 }
3740
3741 static ssize_t qla4xxx_show_boot_ini_info(void *data, int type, char *buf)
3742 {
3743         struct scsi_qla_host *ha = data;
3744         char *str = buf;
3745         int rc;
3746
3747         switch (type) {
3748         case ISCSI_BOOT_INI_INITIATOR_NAME:
3749                 rc = sprintf(str, "%s\n", ha->name_string);
3750                 break;
3751         default:
3752                 rc = -ENOSYS;
3753                 break;
3754         }
3755         return rc;
3756 }
3757
3758 static umode_t qla4xxx_ini_get_attr_visibility(void *data, int type)
3759 {
3760         int rc;
3761
3762         switch (type) {
3763         case ISCSI_BOOT_INI_INITIATOR_NAME:
3764                 rc = S_IRUGO;
3765                 break;
3766         default:
3767                 rc = 0;
3768                 break;
3769         }
3770         return rc;
3771 }
3772
3773 static ssize_t
3774 qla4xxx_show_boot_tgt_info(struct ql4_boot_session_info *boot_sess, int type,
3775                            char *buf)
3776 {
3777         struct ql4_conn_info *boot_conn = &boot_sess->conn_list[0];
3778         char *str = buf;
3779         int rc;
3780
3781         switch (type) {
3782         case ISCSI_BOOT_TGT_NAME:
3783                 rc = sprintf(buf, "%s\n", (char *)&boot_sess->target_name);
3784                 break;
3785         case ISCSI_BOOT_TGT_IP_ADDR:
3786                 if (boot_sess->conn_list[0].dest_ipaddr.ip_type == 0x1)
3787                         rc = sprintf(buf, "%pI4\n",
3788                                      &boot_conn->dest_ipaddr.ip_address);
3789                 else
3790                         rc = sprintf(str, "%pI6\n",
3791                                      &boot_conn->dest_ipaddr.ip_address);
3792                 break;
3793         case ISCSI_BOOT_TGT_PORT:
3794                         rc = sprintf(str, "%d\n", boot_conn->dest_port);
3795                 break;
3796         case ISCSI_BOOT_TGT_CHAP_NAME:
3797                 rc = sprintf(str,  "%.*s\n",
3798                              boot_conn->chap.target_chap_name_length,
3799                              (char *)&boot_conn->chap.target_chap_name);
3800                 break;
3801         case ISCSI_BOOT_TGT_CHAP_SECRET:
3802                 rc = sprintf(str,  "%.*s\n",
3803                              boot_conn->chap.target_secret_length,
3804                              (char *)&boot_conn->chap.target_secret);
3805                 break;
3806         case ISCSI_BOOT_TGT_REV_CHAP_NAME:
3807                 rc = sprintf(str,  "%.*s\n",
3808                              boot_conn->chap.intr_chap_name_length,
3809                              (char *)&boot_conn->chap.intr_chap_name);
3810                 break;
3811         case ISCSI_BOOT_TGT_REV_CHAP_SECRET:
3812                 rc = sprintf(str,  "%.*s\n",
3813                              boot_conn->chap.intr_secret_length,
3814                              (char *)&boot_conn->chap.intr_secret);
3815                 break;
3816         case ISCSI_BOOT_TGT_FLAGS:
3817                 rc = sprintf(str, "%d\n", SYSFS_FLAG_FW_SEL_BOOT);
3818                 break;
3819         case ISCSI_BOOT_TGT_NIC_ASSOC:
3820                 rc = sprintf(str, "0\n");
3821                 break;
3822         default:
3823                 rc = -ENOSYS;
3824                 break;
3825         }
3826         return rc;
3827 }
3828
3829 static ssize_t qla4xxx_show_boot_tgt_pri_info(void *data, int type, char *buf)
3830 {
3831         struct scsi_qla_host *ha = data;
3832         struct ql4_boot_session_info *boot_sess = &(ha->boot_tgt.boot_pri_sess);
3833
3834         return qla4xxx_show_boot_tgt_info(boot_sess, type, buf);
3835 }
3836
3837 static ssize_t qla4xxx_show_boot_tgt_sec_info(void *data, int type, char *buf)
3838 {
3839         struct scsi_qla_host *ha = data;
3840         struct ql4_boot_session_info *boot_sess = &(ha->boot_tgt.boot_sec_sess);
3841
3842         return qla4xxx_show_boot_tgt_info(boot_sess, type, buf);
3843 }
3844
3845 static umode_t qla4xxx_tgt_get_attr_visibility(void *data, int type)
3846 {
3847         int rc;
3848
3849         switch (type) {
3850         case ISCSI_BOOT_TGT_NAME:
3851         case ISCSI_BOOT_TGT_IP_ADDR:
3852         case ISCSI_BOOT_TGT_PORT:
3853         case ISCSI_BOOT_TGT_CHAP_NAME:
3854         case ISCSI_BOOT_TGT_CHAP_SECRET:
3855         case ISCSI_BOOT_TGT_REV_CHAP_NAME:
3856         case ISCSI_BOOT_TGT_REV_CHAP_SECRET:
3857         case ISCSI_BOOT_TGT_NIC_ASSOC:
3858         case ISCSI_BOOT_TGT_FLAGS:
3859                 rc = S_IRUGO;
3860                 break;
3861         default:
3862                 rc = 0;
3863                 break;
3864         }
3865         return rc;
3866 }
3867
3868 static void qla4xxx_boot_release(void *data)
3869 {
3870         struct scsi_qla_host *ha = data;
3871
3872         scsi_host_put(ha->host);
3873 }
3874
3875 static int get_fw_boot_info(struct scsi_qla_host *ha, uint16_t ddb_index[])
3876 {
3877         dma_addr_t buf_dma;
3878         uint32_t addr, pri_addr, sec_addr;
3879         uint32_t offset;
3880         uint16_t func_num;
3881         uint8_t val;
3882         uint8_t *buf = NULL;
3883         size_t size = 13 * sizeof(uint8_t);
3884         int ret = QLA_SUCCESS;
3885
3886         func_num = PCI_FUNC(ha->pdev->devfn);
3887
3888         ql4_printk(KERN_INFO, ha, "%s: Get FW boot info for 0x%x func %d\n",
3889                    __func__, ha->pdev->device, func_num);
3890
3891         if (is_qla40XX(ha)) {
3892                 if (func_num == 1) {
3893                         addr = NVRAM_PORT0_BOOT_MODE;
3894                         pri_addr = NVRAM_PORT0_BOOT_PRI_TGT;
3895                         sec_addr = NVRAM_PORT0_BOOT_SEC_TGT;
3896                 } else if (func_num == 3) {
3897                         addr = NVRAM_PORT1_BOOT_MODE;
3898                         pri_addr = NVRAM_PORT1_BOOT_PRI_TGT;
3899                         sec_addr = NVRAM_PORT1_BOOT_SEC_TGT;
3900                 } else {
3901                         ret = QLA_ERROR;
3902                         goto exit_boot_info;
3903                 }
3904
3905                 /* Check Boot Mode */
3906                 val = rd_nvram_byte(ha, addr);
3907                 if (!(val & 0x07)) {
3908                         DEBUG2(ql4_printk(KERN_INFO, ha, "%s: Adapter boot "
3909                                           "options : 0x%x\n", __func__, val));
3910                         ret = QLA_ERROR;
3911                         goto exit_boot_info;
3912                 }
3913
3914                 /* get primary valid target index */
3915                 val = rd_nvram_byte(ha, pri_addr);
3916                 if (val & BIT_7)
3917                         ddb_index[0] = (val & 0x7f);
3918
3919                 /* get secondary valid target index */
3920                 val = rd_nvram_byte(ha, sec_addr);
3921                 if (val & BIT_7)
3922                         ddb_index[1] = (val & 0x7f);
3923
3924         } else if (is_qla8022(ha)) {
3925                 buf = dma_alloc_coherent(&ha->pdev->dev, size,
3926                                          &buf_dma, GFP_KERNEL);
3927                 if (!buf) {
3928                         DEBUG2(ql4_printk(KERN_ERR, ha,
3929                                           "%s: Unable to allocate dma buffer\n",
3930                                            __func__));
3931                         ret = QLA_ERROR;
3932                         goto exit_boot_info;
3933                 }
3934
3935                 if (ha->port_num == 0)
3936                         offset = BOOT_PARAM_OFFSET_PORT0;
3937                 else if (ha->port_num == 1)
3938                         offset = BOOT_PARAM_OFFSET_PORT1;
3939                 else {
3940                         ret = QLA_ERROR;
3941                         goto exit_boot_info_free;
3942                 }
3943                 addr = FLASH_RAW_ACCESS_ADDR + (ha->hw.flt_iscsi_param * 4) +
3944                        offset;
3945                 if (qla4xxx_get_flash(ha, buf_dma, addr,
3946                                       13 * sizeof(uint8_t)) != QLA_SUCCESS) {
3947                         DEBUG2(ql4_printk(KERN_ERR, ha, "scsi%ld: %s: Get Flash"
3948                                           " failed\n", ha->host_no, __func__));
3949                         ret = QLA_ERROR;
3950                         goto exit_boot_info_free;
3951                 }
3952                 /* Check Boot Mode */
3953                 if (!(buf[1] & 0x07)) {
3954                         DEBUG2(ql4_printk(KERN_INFO, ha, "Firmware boot options"
3955                                           " : 0x%x\n", buf[1]));
3956                         ret = QLA_ERROR;
3957                         goto exit_boot_info_free;
3958                 }
3959
3960                 /* get primary valid target index */
3961                 if (buf[2] & BIT_7)
3962                         ddb_index[0] = buf[2] & 0x7f;
3963
3964                 /* get secondary valid target index */
3965                 if (buf[11] & BIT_7)
3966                         ddb_index[1] = buf[11] & 0x7f;
3967         } else {
3968                 ret = QLA_ERROR;
3969                 goto exit_boot_info;
3970         }
3971
3972         DEBUG2(ql4_printk(KERN_INFO, ha, "%s: Primary target ID %d, Secondary"
3973                           " target ID %d\n", __func__, ddb_index[0],
3974                           ddb_index[1]));
3975
3976 exit_boot_info_free:
3977         dma_free_coherent(&ha->pdev->dev, size, buf, buf_dma);
3978 exit_boot_info:
3979         ha->pri_ddb_idx = ddb_index[0];
3980         ha->sec_ddb_idx = ddb_index[1];
3981         return ret;
3982 }
3983
3984 /**
3985  * qla4xxx_get_bidi_chap - Get a BIDI CHAP user and password
3986  * @ha: pointer to adapter structure
3987  * @username: CHAP username to be returned
3988  * @password: CHAP password to be returned
3989  *
3990  * If a boot entry has BIDI CHAP enabled then we need to set the BIDI CHAP
3991  * user and password in the sysfs entry in /sys/firmware/iscsi_boot#/.
3992  * So from the CHAP cache find the first BIDI CHAP entry and set it
3993  * to the boot record in sysfs.
3994  **/
3995 static int qla4xxx_get_bidi_chap(struct scsi_qla_host *ha, char *username,
3996                             char *password)
3997 {
3998         int i, ret = -EINVAL;
3999         int max_chap_entries = 0;
4000         struct ql4_chap_table *chap_table;
4001
4002         if (is_qla8022(ha))
4003                 max_chap_entries = (ha->hw.flt_chap_size / 2) /
4004                                                 sizeof(struct ql4_chap_table);
4005         else
4006                 max_chap_entries = MAX_CHAP_ENTRIES_40XX;
4007
4008         if (!ha->chap_list) {
4009                 ql4_printk(KERN_ERR, ha, "Do not have CHAP table cache\n");
4010                 return ret;
4011         }
4012
4013         mutex_lock(&ha->chap_sem);
4014         for (i = 0; i < max_chap_entries; i++) {
4015                 chap_table = (struct ql4_chap_table *)ha->chap_list + i;
4016                 if (chap_table->cookie !=
4017                     __constant_cpu_to_le16(CHAP_VALID_COOKIE)) {
4018                         continue;
4019                 }
4020
4021                 if (chap_table->flags & BIT_7) /* local */
4022                         continue;
4023
4024                 if (!(chap_table->flags & BIT_6)) /* Not BIDI */
4025                         continue;
4026
4027                 strncpy(password, chap_table->secret, QL4_CHAP_MAX_SECRET_LEN);
4028                 strncpy(username, chap_table->name, QL4_CHAP_MAX_NAME_LEN);
4029                 ret = 0;
4030                 break;
4031         }
4032         mutex_unlock(&ha->chap_sem);
4033
4034         return ret;
4035 }
4036
4037
4038 static int qla4xxx_get_boot_target(struct scsi_qla_host *ha,
4039                                    struct ql4_boot_session_info *boot_sess,
4040                                    uint16_t ddb_index)
4041 {
4042         struct ql4_conn_info *boot_conn = &boot_sess->conn_list[0];
4043         struct dev_db_entry *fw_ddb_entry;
4044         dma_addr_t fw_ddb_entry_dma;
4045         uint16_t idx;
4046         uint16_t options;
4047         int ret = QLA_SUCCESS;
4048
4049         fw_ddb_entry = dma_alloc_coherent(&ha->pdev->dev, sizeof(*fw_ddb_entry),
4050                                           &fw_ddb_entry_dma, GFP_KERNEL);
4051         if (!fw_ddb_entry) {
4052                 DEBUG2(ql4_printk(KERN_ERR, ha,
4053                                   "%s: Unable to allocate dma buffer.\n",
4054                                   __func__));
4055                 ret = QLA_ERROR;
4056                 return ret;
4057         }
4058
4059         if (qla4xxx_bootdb_by_index(ha, fw_ddb_entry,
4060                                    fw_ddb_entry_dma, ddb_index)) {
4061                 DEBUG2(ql4_printk(KERN_INFO, ha, "%s: No Flash DDB found at "
4062                                   "index [%d]\n", __func__, ddb_index));
4063                 ret = QLA_ERROR;
4064                 goto exit_boot_target;
4065         }
4066
4067         /* Update target name and IP from DDB */
4068         memcpy(boot_sess->target_name, fw_ddb_entry->iscsi_name,
4069                min(sizeof(boot_sess->target_name),
4070                    sizeof(fw_ddb_entry->iscsi_name)));
4071
4072         options = le16_to_cpu(fw_ddb_entry->options);
4073         if (options & DDB_OPT_IPV6_DEVICE) {
4074                 memcpy(&boot_conn->dest_ipaddr.ip_address,
4075                        &fw_ddb_entry->ip_addr[0], IPv6_ADDR_LEN);
4076         } else {
4077                 boot_conn->dest_ipaddr.ip_type = 0x1;
4078                 memcpy(&boot_conn->dest_ipaddr.ip_address,
4079                        &fw_ddb_entry->ip_addr[0], IP_ADDR_LEN);
4080         }
4081
4082         boot_conn->dest_port = le16_to_cpu(fw_ddb_entry->port);
4083
4084         /* update chap information */
4085         idx = __le16_to_cpu(fw_ddb_entry->chap_tbl_idx);
4086
4087         if (BIT_7 & le16_to_cpu(fw_ddb_entry->iscsi_options))   {
4088
4089                 DEBUG2(ql4_printk(KERN_INFO, ha, "Setting chap\n"));
4090
4091                 ret = qla4xxx_get_chap(ha, (char *)&boot_conn->chap.
4092                                        target_chap_name,
4093                                        (char *)&boot_conn->chap.target_secret,
4094                                        idx);
4095                 if (ret) {
4096                         ql4_printk(KERN_ERR, ha, "Failed to set chap\n");
4097                         ret = QLA_ERROR;
4098                         goto exit_boot_target;
4099                 }
4100
4101                 boot_conn->chap.target_chap_name_length = QL4_CHAP_MAX_NAME_LEN;
4102                 boot_conn->chap.target_secret_length = QL4_CHAP_MAX_SECRET_LEN;
4103         }
4104
4105         if (BIT_4 & le16_to_cpu(fw_ddb_entry->iscsi_options)) {
4106
4107                 DEBUG2(ql4_printk(KERN_INFO, ha, "Setting BIDI chap\n"));
4108
4109                 ret = qla4xxx_get_bidi_chap(ha,
4110                                     (char *)&boot_conn->chap.intr_chap_name,
4111                                     (char *)&boot_conn->chap.intr_secret);
4112
4113                 if (ret) {
4114                         ql4_printk(KERN_ERR, ha, "Failed to set BIDI chap\n");
4115                         ret = QLA_ERROR;
4116                         goto exit_boot_target;
4117                 }
4118
4119                 boot_conn->chap.intr_chap_name_length = QL4_CHAP_MAX_NAME_LEN;
4120                 boot_conn->chap.intr_secret_length = QL4_CHAP_MAX_SECRET_LEN;
4121         }
4122
4123 exit_boot_target:
4124         dma_free_coherent(&ha->pdev->dev, sizeof(*fw_ddb_entry),
4125                           fw_ddb_entry, fw_ddb_entry_dma);
4126         return ret;
4127 }
4128
4129 static int qla4xxx_get_boot_info(struct scsi_qla_host *ha)
4130 {
4131         uint16_t ddb_index[2];
4132         int ret = QLA_ERROR;
4133         int rval;
4134
4135         memset(ddb_index, 0, sizeof(ddb_index));
4136         ddb_index[0] = 0xffff;
4137         ddb_index[1] = 0xffff;
4138         ret = get_fw_boot_info(ha, ddb_index);
4139         if (ret != QLA_SUCCESS) {
4140                 DEBUG2(ql4_printk(KERN_INFO, ha,
4141                                 "%s: No boot target configured.\n", __func__));
4142                 return ret;
4143         }
4144
4145         if (ql4xdisablesysfsboot)
4146                 return QLA_SUCCESS;
4147
4148         if (ddb_index[0] == 0xffff)
4149                 goto sec_target;
4150
4151         rval = qla4xxx_get_boot_target(ha, &(ha->boot_tgt.boot_pri_sess),
4152                                       ddb_index[0]);
4153         if (rval != QLA_SUCCESS) {
4154                 DEBUG2(ql4_printk(KERN_INFO, ha, "%s: Primary boot target not "
4155                                   "configured\n", __func__));
4156         } else
4157                 ret = QLA_SUCCESS;
4158
4159 sec_target:
4160         if (ddb_index[1] == 0xffff)
4161                 goto exit_get_boot_info;
4162
4163         rval = qla4xxx_get_boot_target(ha, &(ha->boot_tgt.boot_sec_sess),
4164                                       ddb_index[1]);
4165         if (rval != QLA_SUCCESS) {
4166                 DEBUG2(ql4_printk(KERN_INFO, ha, "%s: Secondary boot target not"
4167                                   " configured\n", __func__));
4168         } else
4169                 ret = QLA_SUCCESS;
4170
4171 exit_get_boot_info:
4172         return ret;
4173 }
4174
4175 static int qla4xxx_setup_boot_info(struct scsi_qla_host *ha)
4176 {
4177         struct iscsi_boot_kobj *boot_kobj;
4178
4179         if (qla4xxx_get_boot_info(ha) != QLA_SUCCESS)
4180                 return QLA_ERROR;
4181
4182         if (ql4xdisablesysfsboot) {
4183                 ql4_printk(KERN_INFO, ha,
4184                            "%s: syfsboot disabled - driver will trigger login "
4185                            "and publish session for discovery .\n", __func__);
4186                 return QLA_SUCCESS;
4187         }
4188
4189
4190         ha->boot_kset = iscsi_boot_create_host_kset(ha->host->host_no);
4191         if (!ha->boot_kset)
4192                 goto kset_free;
4193
4194         if (!scsi_host_get(ha->host))
4195                 goto kset_free;
4196         boot_kobj = iscsi_boot_create_target(ha->boot_kset, 0, ha,
4197                                              qla4xxx_show_boot_tgt_pri_info,
4198                                              qla4xxx_tgt_get_attr_visibility,
4199                                              qla4xxx_boot_release);
4200         if (!boot_kobj)
4201                 goto put_host;
4202
4203         if (!scsi_host_get(ha->host))
4204                 goto kset_free;
4205         boot_kobj = iscsi_boot_create_target(ha->boot_kset, 1, ha,
4206                                              qla4xxx_show_boot_tgt_sec_info,
4207                                              qla4xxx_tgt_get_attr_visibility,
4208                                              qla4xxx_boot_release);
4209         if (!boot_kobj)
4210                 goto put_host;
4211
4212         if (!scsi_host_get(ha->host))
4213                 goto kset_free;
4214         boot_kobj = iscsi_boot_create_initiator(ha->boot_kset, 0, ha,
4215                                                qla4xxx_show_boot_ini_info,
4216                                                qla4xxx_ini_get_attr_visibility,
4217                                                qla4xxx_boot_release);
4218         if (!boot_kobj)
4219                 goto put_host;
4220
4221         if (!scsi_host_get(ha->host))
4222                 goto kset_free;
4223         boot_kobj = iscsi_boot_create_ethernet(ha->boot_kset, 0, ha,
4224                                                qla4xxx_show_boot_eth_info,
4225                                                qla4xxx_eth_get_attr_visibility,
4226                                                qla4xxx_boot_release);
4227         if (!boot_kobj)
4228                 goto put_host;
4229
4230         return QLA_SUCCESS;
4231
4232 put_host:
4233         scsi_host_put(ha->host);
4234 kset_free:
4235         iscsi_boot_destroy_kset(ha->boot_kset);
4236         return -ENOMEM;
4237 }
4238
4239
4240 /**
4241  * qla4xxx_create chap_list - Create CHAP list from FLASH
4242  * @ha: pointer to adapter structure
4243  *
4244  * Read flash and make a list of CHAP entries, during login when a CHAP entry
4245  * is received, it will be checked in this list. If entry exist then the CHAP
4246  * entry index is set in the DDB. If CHAP entry does not exist in this list
4247  * then a new entry is added in FLASH in CHAP table and the index obtained is
4248  * used in the DDB.
4249  **/
4250 static void qla4xxx_create_chap_list(struct scsi_qla_host *ha)
4251 {
4252         int rval = 0;
4253         uint8_t *chap_flash_data = NULL;
4254         uint32_t offset;
4255         dma_addr_t chap_dma;
4256         uint32_t chap_size = 0;
4257
4258         if (is_qla40XX(ha))
4259                 chap_size = MAX_CHAP_ENTRIES_40XX  *
4260                                         sizeof(struct ql4_chap_table);
4261         else    /* Single region contains CHAP info for both
4262                  * ports which is divided into half for each port.
4263                  */
4264                 chap_size = ha->hw.flt_chap_size / 2;
4265
4266         chap_flash_data = dma_alloc_coherent(&ha->pdev->dev, chap_size,
4267                                           &chap_dma, GFP_KERNEL);
4268         if (!chap_flash_data) {
4269                 ql4_printk(KERN_ERR, ha, "No memory for chap_flash_data\n");
4270                 return;
4271         }
4272         if (is_qla40XX(ha))
4273                 offset = FLASH_CHAP_OFFSET;
4274         else {
4275                 offset = FLASH_RAW_ACCESS_ADDR + (ha->hw.flt_region_chap << 2);
4276                 if (ha->port_num == 1)
4277                         offset += chap_size;
4278         }
4279
4280         rval = qla4xxx_get_flash(ha, chap_dma, offset, chap_size);
4281         if (rval != QLA_SUCCESS)
4282                 goto exit_chap_list;
4283
4284         if (ha->chap_list == NULL)
4285                 ha->chap_list = vmalloc(chap_size);
4286         if (ha->chap_list == NULL) {
4287                 ql4_printk(KERN_ERR, ha, "No memory for ha->chap_list\n");
4288                 goto exit_chap_list;
4289         }
4290
4291         memcpy(ha->chap_list, chap_flash_data, chap_size);
4292
4293 exit_chap_list:
4294         dma_free_coherent(&ha->pdev->dev, chap_size,
4295                         chap_flash_data, chap_dma);
4296 }
4297
4298 static void qla4xxx_get_param_ddb(struct ddb_entry *ddb_entry,
4299                                   struct ql4_tuple_ddb *tddb)
4300 {
4301         struct scsi_qla_host *ha;
4302         struct iscsi_cls_session *cls_sess;
4303         struct iscsi_cls_conn *cls_conn;
4304         struct iscsi_session *sess;
4305         struct iscsi_conn *conn;
4306
4307         DEBUG2(printk(KERN_INFO "Func: %s\n", __func__));
4308         ha = ddb_entry->ha;
4309         cls_sess = ddb_entry->sess;
4310         sess = cls_sess->dd_data;
4311         cls_conn = ddb_entry->conn;
4312         conn = cls_conn->dd_data;
4313
4314         tddb->tpgt = sess->tpgt;
4315         tddb->port = conn->persistent_port;
4316         strncpy(tddb->iscsi_name, sess->targetname, ISCSI_NAME_SIZE);
4317         strncpy(tddb->ip_addr, conn->persistent_address, DDB_IPADDR_LEN);
4318 }
4319
4320 static void qla4xxx_convert_param_ddb(struct dev_db_entry *fw_ddb_entry,
4321                                       struct ql4_tuple_ddb *tddb,
4322                                       uint8_t *flash_isid)
4323 {
4324         uint16_t options = 0;
4325
4326         tddb->tpgt = le32_to_cpu(fw_ddb_entry->tgt_portal_grp);
4327         memcpy(&tddb->iscsi_name[0], &fw_ddb_entry->iscsi_name[0],
4328                min(sizeof(tddb->iscsi_name), sizeof(fw_ddb_entry->iscsi_name)));
4329
4330         options = le16_to_cpu(fw_ddb_entry->options);
4331         if (options & DDB_OPT_IPV6_DEVICE)
4332                 sprintf(tddb->ip_addr, "%pI6", fw_ddb_entry->ip_addr);
4333         else
4334                 sprintf(tddb->ip_addr, "%pI4", fw_ddb_entry->ip_addr);
4335
4336         tddb->port = le16_to_cpu(fw_ddb_entry->port);
4337
4338         if (flash_isid == NULL)
4339                 memcpy(&tddb->isid[0], &fw_ddb_entry->isid[0],
4340                        sizeof(tddb->isid));
4341         else
4342                 memcpy(&tddb->isid[0], &flash_isid[0], sizeof(tddb->isid));
4343 }
4344
4345 static int qla4xxx_compare_tuple_ddb(struct scsi_qla_host *ha,
4346                                      struct ql4_tuple_ddb *old_tddb,
4347                                      struct ql4_tuple_ddb *new_tddb,
4348                                      uint8_t is_isid_compare)
4349 {
4350         if (strcmp(old_tddb->iscsi_name, new_tddb->iscsi_name))
4351                 return QLA_ERROR;
4352
4353         if (strcmp(old_tddb->ip_addr, new_tddb->ip_addr))
4354                 return QLA_ERROR;
4355
4356         if (old_tddb->port != new_tddb->port)
4357                 return QLA_ERROR;
4358
4359         /* For multi sessions, driver generates the ISID, so do not compare
4360          * ISID in reset path since it would be a comparision between the
4361          * driver generated ISID and firmware generated ISID. This could
4362          * lead to adding duplicated DDBs in the list as driver generated
4363          * ISID would not match firmware generated ISID.
4364          */
4365         if (is_isid_compare) {
4366                 DEBUG2(ql4_printk(KERN_INFO, ha, "%s: old ISID [%02x%02x%02x"
4367                         "%02x%02x%02x] New ISID [%02x%02x%02x%02x%02x%02x]\n",
4368                         __func__, old_tddb->isid[5], old_tddb->isid[4],
4369                         old_tddb->isid[3], old_tddb->isid[2], old_tddb->isid[1],
4370                         old_tddb->isid[0], new_tddb->isid[5], new_tddb->isid[4],
4371                         new_tddb->isid[3], new_tddb->isid[2], new_tddb->isid[1],
4372                         new_tddb->isid[0]));
4373
4374                 if (memcmp(&old_tddb->isid[0], &new_tddb->isid[0],
4375                            sizeof(old_tddb->isid)))
4376                         return QLA_ERROR;
4377         }
4378
4379         DEBUG2(ql4_printk(KERN_INFO, ha,
4380                           "Match Found, fw[%d,%d,%s,%s], [%d,%d,%s,%s]",
4381                           old_tddb->port, old_tddb->tpgt, old_tddb->ip_addr,
4382                           old_tddb->iscsi_name, new_tddb->port, new_tddb->tpgt,
4383                           new_tddb->ip_addr, new_tddb->iscsi_name));
4384
4385         return QLA_SUCCESS;
4386 }
4387
4388 static int qla4xxx_is_session_exists(struct scsi_qla_host *ha,
4389                                      struct dev_db_entry *fw_ddb_entry)
4390 {
4391         struct ddb_entry *ddb_entry;
4392         struct ql4_tuple_ddb *fw_tddb = NULL;
4393         struct ql4_tuple_ddb *tmp_tddb = NULL;
4394         int idx;
4395         int ret = QLA_ERROR;
4396
4397         fw_tddb = vzalloc(sizeof(*fw_tddb));
4398         if (!fw_tddb) {
4399                 DEBUG2(ql4_printk(KERN_WARNING, ha,
4400                                   "Memory Allocation failed.\n"));
4401                 ret = QLA_SUCCESS;
4402                 goto exit_check;
4403         }
4404
4405         tmp_tddb = vzalloc(sizeof(*tmp_tddb));
4406         if (!tmp_tddb) {
4407                 DEBUG2(ql4_printk(KERN_WARNING, ha,
4408                                   "Memory Allocation failed.\n"));
4409                 ret = QLA_SUCCESS;
4410                 goto exit_check;
4411         }
4412
4413         qla4xxx_convert_param_ddb(fw_ddb_entry, fw_tddb, NULL);
4414
4415         for (idx = 0; idx < MAX_DDB_ENTRIES; idx++) {
4416                 ddb_entry = qla4xxx_lookup_ddb_by_fw_index(ha, idx);
4417                 if (ddb_entry == NULL)
4418                         continue;
4419
4420                 qla4xxx_get_param_ddb(ddb_entry, tmp_tddb);
4421                 if (!qla4xxx_compare_tuple_ddb(ha, fw_tddb, tmp_tddb, false)) {
4422                         ret = QLA_SUCCESS; /* found */
4423                         goto exit_check;
4424                 }
4425         }
4426
4427 exit_check:
4428         if (fw_tddb)
4429                 vfree(fw_tddb);
4430         if (tmp_tddb)
4431                 vfree(tmp_tddb);
4432         return ret;
4433 }
4434
4435 /**
4436  * qla4xxx_check_existing_isid - check if target with same isid exist
4437  *                               in target list
4438  * @list_nt: list of target
4439  * @isid: isid to check
4440  *
4441  * This routine return QLA_SUCCESS if target with same isid exist
4442  **/
4443 static int qla4xxx_check_existing_isid(struct list_head *list_nt, uint8_t *isid)
4444 {
4445         struct qla_ddb_index *nt_ddb_idx, *nt_ddb_idx_tmp;
4446         struct dev_db_entry *fw_ddb_entry;
4447
4448         list_for_each_entry_safe(nt_ddb_idx, nt_ddb_idx_tmp, list_nt, list) {
4449                 fw_ddb_entry = &nt_ddb_idx->fw_ddb;
4450
4451                 if (memcmp(&fw_ddb_entry->isid[0], &isid[0],
4452                            sizeof(nt_ddb_idx->fw_ddb.isid)) == 0) {
4453                         return QLA_SUCCESS;
4454                 }
4455         }
4456         return QLA_ERROR;
4457 }
4458
4459 /**
4460  * qla4xxx_update_isid - compare ddbs and updated isid
4461  * @ha: Pointer to host adapter structure.
4462  * @list_nt: list of nt target
4463  * @fw_ddb_entry: firmware ddb entry
4464  *
4465  * This routine update isid if ddbs have same iqn, same isid and
4466  * different IP addr.
4467  * Return QLA_SUCCESS if isid is updated.
4468  **/
4469 static int qla4xxx_update_isid(struct scsi_qla_host *ha,
4470                                struct list_head *list_nt,
4471                                struct dev_db_entry *fw_ddb_entry)
4472 {
4473         uint8_t base_value, i;
4474
4475         base_value = fw_ddb_entry->isid[1] & 0x1f;
4476         for (i = 0; i < 8; i++) {
4477                 fw_ddb_entry->isid[1] = (base_value | (i << 5));
4478                 if (qla4xxx_check_existing_isid(list_nt, fw_ddb_entry->isid))
4479                         break;
4480         }
4481
4482         if (!qla4xxx_check_existing_isid(list_nt, fw_ddb_entry->isid))
4483                 return QLA_ERROR;
4484
4485         return QLA_SUCCESS;
4486 }
4487
4488 /**
4489  * qla4xxx_should_update_isid - check if isid need to update
4490  * @ha: Pointer to host adapter structure.
4491  * @old_tddb: ddb tuple
4492  * @new_tddb: ddb tuple
4493  *
4494  * Return QLA_SUCCESS if different IP, different PORT, same iqn,
4495  * same isid
4496  **/
4497 static int qla4xxx_should_update_isid(struct scsi_qla_host *ha,
4498                                       struct ql4_tuple_ddb *old_tddb,
4499                                       struct ql4_tuple_ddb *new_tddb)
4500 {
4501         if (strcmp(old_tddb->ip_addr, new_tddb->ip_addr) == 0) {
4502                 /* Same ip */
4503                 if (old_tddb->port == new_tddb->port)
4504                         return QLA_ERROR;
4505         }
4506
4507         if (strcmp(old_tddb->iscsi_name, new_tddb->iscsi_name))
4508                 /* different iqn */
4509                 return QLA_ERROR;
4510
4511         if (memcmp(&old_tddb->isid[0], &new_tddb->isid[0],
4512                    sizeof(old_tddb->isid)))
4513                 /* different isid */
4514                 return QLA_ERROR;
4515
4516         return QLA_SUCCESS;
4517 }
4518
4519 /**
4520  * qla4xxx_is_flash_ddb_exists - check if fw_ddb_entry already exists in list_nt
4521  * @ha: Pointer to host adapter structure.
4522  * @list_nt: list of nt target.
4523  * @fw_ddb_entry: firmware ddb entry.
4524  *
4525  * This routine check if fw_ddb_entry already exists in list_nt to avoid
4526  * duplicate ddb in list_nt.
4527  * Return QLA_SUCCESS if duplicate ddb exit in list_nl.
4528  * Note: This function also update isid of DDB if required.
4529  **/
4530
4531 static int qla4xxx_is_flash_ddb_exists(struct scsi_qla_host *ha,
4532                                        struct list_head *list_nt,
4533                                        struct dev_db_entry *fw_ddb_entry)
4534 {
4535         struct qla_ddb_index  *nt_ddb_idx, *nt_ddb_idx_tmp;
4536         struct ql4_tuple_ddb *fw_tddb = NULL;
4537         struct ql4_tuple_ddb *tmp_tddb = NULL;
4538         int rval, ret = QLA_ERROR;
4539
4540         fw_tddb = vzalloc(sizeof(*fw_tddb));
4541         if (!fw_tddb) {
4542                 DEBUG2(ql4_printk(KERN_WARNING, ha,
4543                                   "Memory Allocation failed.\n"));
4544                 ret = QLA_SUCCESS;
4545                 goto exit_check;
4546         }
4547
4548         tmp_tddb = vzalloc(sizeof(*tmp_tddb));
4549         if (!tmp_tddb) {
4550                 DEBUG2(ql4_printk(KERN_WARNING, ha,
4551                                   "Memory Allocation failed.\n"));
4552                 ret = QLA_SUCCESS;
4553                 goto exit_check;
4554         }
4555
4556         qla4xxx_convert_param_ddb(fw_ddb_entry, fw_tddb, NULL);
4557
4558         list_for_each_entry_safe(nt_ddb_idx, nt_ddb_idx_tmp, list_nt, list) {
4559                 qla4xxx_convert_param_ddb(&nt_ddb_idx->fw_ddb, tmp_tddb,
4560                                           nt_ddb_idx->flash_isid);
4561                 ret = qla4xxx_compare_tuple_ddb(ha, fw_tddb, tmp_tddb, true);
4562                 /* found duplicate ddb */
4563                 if (ret == QLA_SUCCESS)
4564                         goto exit_check;
4565         }
4566
4567         list_for_each_entry_safe(nt_ddb_idx, nt_ddb_idx_tmp, list_nt, list) {
4568                 qla4xxx_convert_param_ddb(&nt_ddb_idx->fw_ddb, tmp_tddb, NULL);
4569
4570                 ret = qla4xxx_should_update_isid(ha, tmp_tddb, fw_tddb);
4571                 if (ret == QLA_SUCCESS) {
4572                         rval = qla4xxx_update_isid(ha, list_nt, fw_ddb_entry);
4573                         if (rval == QLA_SUCCESS)
4574                                 ret = QLA_ERROR;
4575                         else
4576                                 ret = QLA_SUCCESS;
4577
4578                         goto exit_check;
4579                 }
4580         }
4581
4582 exit_check:
4583         if (fw_tddb)
4584                 vfree(fw_tddb);
4585         if (tmp_tddb)
4586                 vfree(tmp_tddb);
4587         return ret;
4588 }
4589
4590 static void qla4xxx_free_ddb_list(struct list_head *list_ddb)
4591 {
4592         struct qla_ddb_index  *ddb_idx, *ddb_idx_tmp;
4593
4594         list_for_each_entry_safe(ddb_idx, ddb_idx_tmp, list_ddb, list) {
4595                 list_del_init(&ddb_idx->list);
4596                 vfree(ddb_idx);
4597         }
4598 }
4599
4600 static struct iscsi_endpoint *qla4xxx_get_ep_fwdb(struct scsi_qla_host *ha,
4601                                         struct dev_db_entry *fw_ddb_entry)
4602 {
4603         struct iscsi_endpoint *ep;
4604         struct sockaddr_in *addr;
4605         struct sockaddr_in6 *addr6;
4606         struct sockaddr *dst_addr;
4607         char *ip;
4608
4609         /* TODO: need to destroy on unload iscsi_endpoint*/
4610         dst_addr = vmalloc(sizeof(*dst_addr));
4611         if (!dst_addr)
4612                 return NULL;
4613
4614         if (fw_ddb_entry->options & DDB_OPT_IPV6_DEVICE) {
4615                 dst_addr->sa_family = AF_INET6;
4616                 addr6 = (struct sockaddr_in6 *)dst_addr;
4617                 ip = (char *)&addr6->sin6_addr;
4618                 memcpy(ip, fw_ddb_entry->ip_addr, IPv6_ADDR_LEN);
4619                 addr6->sin6_port = htons(le16_to_cpu(fw_ddb_entry->port));
4620
4621         } else {
4622                 dst_addr->sa_family = AF_INET;
4623                 addr = (struct sockaddr_in *)dst_addr;
4624                 ip = (char *)&addr->sin_addr;
4625                 memcpy(ip, fw_ddb_entry->ip_addr, IP_ADDR_LEN);
4626                 addr->sin_port = htons(le16_to_cpu(fw_ddb_entry->port));
4627         }
4628
4629         ep = qla4xxx_ep_connect(ha->host, dst_addr, 0);
4630         vfree(dst_addr);
4631         return ep;
4632 }
4633
4634 static int qla4xxx_verify_boot_idx(struct scsi_qla_host *ha, uint16_t idx)
4635 {
4636         if (ql4xdisablesysfsboot)
4637                 return QLA_SUCCESS;
4638         if (idx == ha->pri_ddb_idx || idx == ha->sec_ddb_idx)
4639                 return QLA_ERROR;
4640         return QLA_SUCCESS;
4641 }
4642
4643 static void qla4xxx_setup_flash_ddb_entry(struct scsi_qla_host *ha,
4644                                           struct ddb_entry *ddb_entry)
4645 {
4646         uint16_t def_timeout;
4647
4648         ddb_entry->ddb_type = FLASH_DDB;
4649         ddb_entry->fw_ddb_index = INVALID_ENTRY;
4650         ddb_entry->fw_ddb_device_state = DDB_DS_NO_CONNECTION_ACTIVE;
4651         ddb_entry->ha = ha;
4652         ddb_entry->unblock_sess = qla4xxx_unblock_flash_ddb;
4653         ddb_entry->ddb_change = qla4xxx_flash_ddb_change;
4654
4655         atomic_set(&ddb_entry->retry_relogin_timer, INVALID_ENTRY);
4656         atomic_set(&ddb_entry->relogin_timer, 0);
4657         atomic_set(&ddb_entry->relogin_retry_count, 0);
4658         def_timeout = le16_to_cpu(ddb_entry->fw_ddb_entry.def_timeout);
4659         ddb_entry->default_relogin_timeout =
4660                 (def_timeout > LOGIN_TOV) && (def_timeout < LOGIN_TOV * 10) ?
4661                 def_timeout : LOGIN_TOV;
4662         ddb_entry->default_time2wait =
4663                 le16_to_cpu(ddb_entry->fw_ddb_entry.iscsi_def_time2wait);
4664 }
4665
4666 static void qla4xxx_wait_for_ip_configuration(struct scsi_qla_host *ha)
4667 {
4668         uint32_t idx = 0;
4669         uint32_t ip_idx[IP_ADDR_COUNT] = {0, 1, 2, 3}; /* 4 IP interfaces */
4670         uint32_t sts[MBOX_REG_COUNT];
4671         uint32_t ip_state;
4672         unsigned long wtime;
4673         int ret;
4674
4675         wtime = jiffies + (HZ * IP_CONFIG_TOV);
4676         do {
4677                 for (idx = 0; idx < IP_ADDR_COUNT; idx++) {
4678                         if (ip_idx[idx] == -1)
4679                                 continue;
4680
4681                         ret = qla4xxx_get_ip_state(ha, 0, ip_idx[idx], sts);
4682
4683                         if (ret == QLA_ERROR) {
4684                                 ip_idx[idx] = -1;
4685                                 continue;
4686                         }
4687
4688                         ip_state = (sts[1] & IP_STATE_MASK) >> IP_STATE_SHIFT;
4689
4690                         DEBUG2(ql4_printk(KERN_INFO, ha,
4691                                           "Waiting for IP state for idx = %d, state = 0x%x\n",
4692                                           ip_idx[idx], ip_state));
4693                         if (ip_state == IP_ADDRSTATE_UNCONFIGURED ||
4694                             ip_state == IP_ADDRSTATE_INVALID ||
4695                             ip_state == IP_ADDRSTATE_PREFERRED ||
4696                             ip_state == IP_ADDRSTATE_DEPRICATED ||
4697                             ip_state == IP_ADDRSTATE_DISABLING)
4698                                 ip_idx[idx] = -1;
4699                 }
4700
4701                 /* Break if all IP states checked */
4702                 if ((ip_idx[0] == -1) &&
4703                     (ip_idx[1] == -1) &&
4704                     (ip_idx[2] == -1) &&
4705                     (ip_idx[3] == -1))
4706                         break;
4707                 schedule_timeout_uninterruptible(HZ);
4708         } while (time_after(wtime, jiffies));
4709 }
4710
4711 static void qla4xxx_build_st_list(struct scsi_qla_host *ha,
4712                                   struct list_head *list_st)
4713 {
4714         struct qla_ddb_index  *st_ddb_idx;
4715         int max_ddbs;
4716         int fw_idx_size;
4717         struct dev_db_entry *fw_ddb_entry;
4718         dma_addr_t fw_ddb_dma;
4719         int ret;
4720         uint32_t idx = 0, next_idx = 0;
4721         uint32_t state = 0, conn_err = 0;
4722         uint16_t conn_id = 0;
4723
4724         fw_ddb_entry = dma_pool_alloc(ha->fw_ddb_dma_pool, GFP_KERNEL,
4725                                       &fw_ddb_dma);
4726         if (fw_ddb_entry == NULL) {
4727                 DEBUG2(ql4_printk(KERN_ERR, ha, "Out of memory\n"));
4728                 goto exit_st_list;
4729         }
4730
4731         max_ddbs =  is_qla40XX(ha) ? MAX_DEV_DB_ENTRIES_40XX :
4732                                      MAX_DEV_DB_ENTRIES;
4733         fw_idx_size = sizeof(struct qla_ddb_index);
4734
4735         for (idx = 0; idx < max_ddbs; idx = next_idx) {
4736                 ret = qla4xxx_get_fwddb_entry(ha, idx, fw_ddb_entry, fw_ddb_dma,
4737                                               NULL, &next_idx, &state,
4738                                               &conn_err, NULL, &conn_id);
4739                 if (ret == QLA_ERROR)
4740                         break;
4741
4742                 /* Ignore DDB if invalid state (unassigned) */
4743                 if (state == DDB_DS_UNASSIGNED)
4744                         goto continue_next_st;
4745
4746                 /* Check if ST, add to the list_st */
4747                 if (strlen((char *) fw_ddb_entry->iscsi_name) != 0)
4748                         goto continue_next_st;
4749
4750                 st_ddb_idx = vzalloc(fw_idx_size);
4751                 if (!st_ddb_idx)
4752                         break;
4753
4754                 st_ddb_idx->fw_ddb_idx = idx;
4755
4756                 list_add_tail(&st_ddb_idx->list, list_st);
4757 continue_next_st:
4758                 if (next_idx == 0)
4759                         break;
4760         }
4761
4762 exit_st_list:
4763         if (fw_ddb_entry)
4764                 dma_pool_free(ha->fw_ddb_dma_pool, fw_ddb_entry, fw_ddb_dma);
4765 }
4766
4767 /**
4768  * qla4xxx_remove_failed_ddb - Remove inactive or failed ddb from list
4769  * @ha: pointer to adapter structure
4770  * @list_ddb: List from which failed ddb to be removed
4771  *
4772  * Iterate over the list of DDBs and find and remove DDBs that are either in
4773  * no connection active state or failed state
4774  **/
4775 static void qla4xxx_remove_failed_ddb(struct scsi_qla_host *ha,
4776                                       struct list_head *list_ddb)
4777 {
4778         struct qla_ddb_index  *ddb_idx, *ddb_idx_tmp;
4779         uint32_t next_idx = 0;
4780         uint32_t state = 0, conn_err = 0;
4781         int ret;
4782
4783         list_for_each_entry_safe(ddb_idx, ddb_idx_tmp, list_ddb, list) {
4784                 ret = qla4xxx_get_fwddb_entry(ha, ddb_idx->fw_ddb_idx,
4785                                               NULL, 0, NULL, &next_idx, &state,
4786                                               &conn_err, NULL, NULL);
4787                 if (ret == QLA_ERROR)
4788                         continue;
4789
4790                 if (state == DDB_DS_NO_CONNECTION_ACTIVE ||
4791                     state == DDB_DS_SESSION_FAILED) {
4792                         list_del_init(&ddb_idx->list);
4793                         vfree(ddb_idx);
4794                 }
4795         }
4796 }
4797
4798 static int qla4xxx_sess_conn_setup(struct scsi_qla_host *ha,
4799                                    struct dev_db_entry *fw_ddb_entry,
4800                                    int is_reset)
4801 {
4802         struct iscsi_cls_session *cls_sess;
4803         struct iscsi_session *sess;
4804         struct iscsi_cls_conn *cls_conn;
4805         struct iscsi_endpoint *ep;
4806         uint16_t cmds_max = 32;
4807         uint16_t conn_id = 0;
4808         uint32_t initial_cmdsn = 0;
4809         int ret = QLA_SUCCESS;
4810
4811         struct ddb_entry *ddb_entry = NULL;
4812
4813         /* Create session object, with INVALID_ENTRY,
4814          * the targer_id would get set when we issue the login
4815          */
4816         cls_sess = iscsi_session_setup(&qla4xxx_iscsi_transport, ha->host,
4817                                        cmds_max, sizeof(struct ddb_entry),
4818                                        sizeof(struct ql4_task_data),
4819                                        initial_cmdsn, INVALID_ENTRY);
4820         if (!cls_sess) {
4821                 ret = QLA_ERROR;
4822                 goto exit_setup;
4823         }
4824
4825         /*
4826          * so calling module_put function to decrement the
4827          * reference count.
4828          **/
4829         module_put(qla4xxx_iscsi_transport.owner);
4830         sess = cls_sess->dd_data;
4831         ddb_entry = sess->dd_data;
4832         ddb_entry->sess = cls_sess;
4833
4834         cls_sess->recovery_tmo = ql4xsess_recovery_tmo;
4835         memcpy(&ddb_entry->fw_ddb_entry, fw_ddb_entry,
4836                sizeof(struct dev_db_entry));
4837
4838         qla4xxx_setup_flash_ddb_entry(ha, ddb_entry);
4839
4840         cls_conn = iscsi_conn_setup(cls_sess, sizeof(struct qla_conn), conn_id);
4841
4842         if (!cls_conn) {
4843                 ret = QLA_ERROR;
4844                 goto exit_setup;
4845         }
4846
4847         ddb_entry->conn = cls_conn;
4848
4849         /* Setup ep, for displaying attributes in sysfs */
4850         ep = qla4xxx_get_ep_fwdb(ha, fw_ddb_entry);
4851         if (ep) {
4852                 ep->conn = cls_conn;
4853                 cls_conn->ep = ep;
4854         } else {
4855                 DEBUG2(ql4_printk(KERN_ERR, ha, "Unable to get ep\n"));
4856                 ret = QLA_ERROR;
4857                 goto exit_setup;
4858         }
4859
4860         /* Update sess/conn params */
4861         qla4xxx_copy_fwddb_param(ha, fw_ddb_entry, cls_sess, cls_conn);
4862
4863         if (is_reset == RESET_ADAPTER) {
4864                 iscsi_block_session(cls_sess);
4865                 /* Use the relogin path to discover new devices
4866                  *  by short-circuting the logic of setting
4867                  *  timer to relogin - instead set the flags
4868                  *  to initiate login right away.
4869                  */
4870                 set_bit(DPC_RELOGIN_DEVICE, &ha->dpc_flags);
4871                 set_bit(DF_RELOGIN, &ddb_entry->flags);
4872         }
4873
4874 exit_setup:
4875         return ret;
4876 }
4877
4878 static void qla4xxx_build_nt_list(struct scsi_qla_host *ha,
4879                                   struct list_head *list_nt, int is_reset)
4880 {
4881         struct dev_db_entry *fw_ddb_entry;
4882         dma_addr_t fw_ddb_dma;
4883         int max_ddbs;
4884         int fw_idx_size;
4885         int ret;
4886         uint32_t idx = 0, next_idx = 0;
4887         uint32_t state = 0, conn_err = 0;
4888         uint16_t conn_id = 0;
4889         struct qla_ddb_index  *nt_ddb_idx;
4890
4891         fw_ddb_entry = dma_pool_alloc(ha->fw_ddb_dma_pool, GFP_KERNEL,
4892                                       &fw_ddb_dma);
4893         if (fw_ddb_entry == NULL) {
4894                 DEBUG2(ql4_printk(KERN_ERR, ha, "Out of memory\n"));
4895                 goto exit_nt_list;
4896         }
4897         max_ddbs =  is_qla40XX(ha) ? MAX_DEV_DB_ENTRIES_40XX :
4898                                      MAX_DEV_DB_ENTRIES;
4899         fw_idx_size = sizeof(struct qla_ddb_index);
4900
4901         for (idx = 0; idx < max_ddbs; idx = next_idx) {
4902                 ret = qla4xxx_get_fwddb_entry(ha, idx, fw_ddb_entry, fw_ddb_dma,
4903                                               NULL, &next_idx, &state,
4904                                               &conn_err, NULL, &conn_id);
4905                 if (ret == QLA_ERROR)
4906                         break;
4907
4908                 if (qla4xxx_verify_boot_idx(ha, idx) != QLA_SUCCESS)
4909                         goto continue_next_nt;
4910
4911                 /* Check if NT, then add to list it */
4912                 if (strlen((char *) fw_ddb_entry->iscsi_name) == 0)
4913                         goto continue_next_nt;
4914
4915                 if (!(state == DDB_DS_NO_CONNECTION_ACTIVE ||
4916                     state == DDB_DS_SESSION_FAILED))
4917                         goto continue_next_nt;
4918
4919                 DEBUG2(ql4_printk(KERN_INFO, ha,
4920                                   "Adding  DDB to session = 0x%x\n", idx));
4921                 if (is_reset == INIT_ADAPTER) {
4922                         nt_ddb_idx = vmalloc(fw_idx_size);
4923                         if (!nt_ddb_idx)
4924                                 break;
4925
4926                         nt_ddb_idx->fw_ddb_idx = idx;
4927
4928                         /* Copy original isid as it may get updated in function
4929                          * qla4xxx_update_isid(). We need original isid in
4930                          * function qla4xxx_compare_tuple_ddb to find duplicate
4931                          * target */
4932                         memcpy(&nt_ddb_idx->flash_isid[0],
4933                                &fw_ddb_entry->isid[0],
4934                                sizeof(nt_ddb_idx->flash_isid));
4935
4936                         ret = qla4xxx_is_flash_ddb_exists(ha, list_nt,
4937                                                           fw_ddb_entry);
4938                         if (ret == QLA_SUCCESS) {
4939                                 /* free nt_ddb_idx and do not add to list_nt */
4940                                 vfree(nt_ddb_idx);
4941                                 goto continue_next_nt;
4942                         }
4943
4944                         /* Copy updated isid */
4945                         memcpy(&nt_ddb_idx->fw_ddb, fw_ddb_entry,
4946                                sizeof(struct dev_db_entry));
4947
4948                         list_add_tail(&nt_ddb_idx->list, list_nt);
4949                 } else if (is_reset == RESET_ADAPTER) {
4950                         if (qla4xxx_is_session_exists(ha, fw_ddb_entry) ==
4951                                                                 QLA_SUCCESS)
4952                                 goto continue_next_nt;
4953                 }
4954
4955                 ret = qla4xxx_sess_conn_setup(ha, fw_ddb_entry, is_reset);
4956                 if (ret == QLA_ERROR)
4957                         goto exit_nt_list;
4958
4959 continue_next_nt:
4960                 if (next_idx == 0)
4961                         break;
4962         }
4963
4964 exit_nt_list:
4965         if (fw_ddb_entry)
4966                 dma_pool_free(ha->fw_ddb_dma_pool, fw_ddb_entry, fw_ddb_dma);
4967 }
4968
4969 /**
4970  * qla4xxx_build_ddb_list - Build ddb list and setup sessions
4971  * @ha: pointer to adapter structure
4972  * @is_reset: Is this init path or reset path
4973  *
4974  * Create a list of sendtargets (st) from firmware DDBs, issue send targets
4975  * using connection open, then create the list of normal targets (nt)
4976  * from firmware DDBs. Based on the list of nt setup session and connection
4977  * objects.
4978  **/
4979 void qla4xxx_build_ddb_list(struct scsi_qla_host *ha, int is_reset)
4980 {
4981         uint16_t tmo = 0;
4982         struct list_head list_st, list_nt;
4983         struct qla_ddb_index  *st_ddb_idx, *st_ddb_idx_tmp;
4984         unsigned long wtime;
4985
4986         if (!test_bit(AF_LINK_UP, &ha->flags)) {
4987                 set_bit(AF_BUILD_DDB_LIST, &ha->flags);
4988                 ha->is_reset = is_reset;
4989                 return;
4990         }
4991
4992         INIT_LIST_HEAD(&list_st);
4993         INIT_LIST_HEAD(&list_nt);
4994
4995         qla4xxx_build_st_list(ha, &list_st);
4996
4997         /* Before issuing conn open mbox, ensure all IPs states are configured
4998          * Note, conn open fails if IPs are not configured
4999          */
5000         qla4xxx_wait_for_ip_configuration(ha);
5001
5002         /* Go thru the STs and fire the sendtargets by issuing conn open mbx */
5003         list_for_each_entry_safe(st_ddb_idx, st_ddb_idx_tmp, &list_st, list) {
5004                 qla4xxx_conn_open(ha, st_ddb_idx->fw_ddb_idx);
5005         }
5006
5007         /* Wait to ensure all sendtargets are done for min 12 sec wait */
5008         tmo = ((ha->def_timeout > LOGIN_TOV) &&
5009                (ha->def_timeout < LOGIN_TOV * 10) ?
5010                ha->def_timeout : LOGIN_TOV);
5011
5012         DEBUG2(ql4_printk(KERN_INFO, ha,
5013                           "Default time to wait for build ddb %d\n", tmo));
5014
5015         wtime = jiffies + (HZ * tmo);
5016         do {
5017                 if (list_empty(&list_st))
5018                         break;
5019
5020                 qla4xxx_remove_failed_ddb(ha, &list_st);
5021                 schedule_timeout_uninterruptible(HZ / 10);
5022         } while (time_after(wtime, jiffies));
5023
5024         /* Free up the sendtargets list */
5025         qla4xxx_free_ddb_list(&list_st);
5026
5027         qla4xxx_build_nt_list(ha, &list_nt, is_reset);
5028
5029         qla4xxx_free_ddb_list(&list_nt);
5030
5031         qla4xxx_free_ddb_index(ha);
5032 }
5033
5034 /**
5035  * qla4xxx_probe_adapter - callback function to probe HBA
5036  * @pdev: pointer to pci_dev structure
5037  * @pci_device_id: pointer to pci_device entry
5038  *
5039  * This routine will probe for Qlogic 4xxx iSCSI host adapters.
5040  * It returns zero if successful. It also initializes all data necessary for
5041  * the driver.
5042  **/
5043 static int __devinit qla4xxx_probe_adapter(struct pci_dev *pdev,
5044                                            const struct pci_device_id *ent)
5045 {
5046         int ret = -ENODEV, status;
5047         struct Scsi_Host *host;
5048         struct scsi_qla_host *ha;
5049         uint8_t init_retry_count = 0;
5050         char buf[34];
5051         struct qla4_8xxx_legacy_intr_set *nx_legacy_intr;
5052         uint32_t dev_state;
5053
5054         if (pci_enable_device(pdev))
5055                 return -1;
5056
5057         host = iscsi_host_alloc(&qla4xxx_driver_template, sizeof(*ha), 0);
5058         if (host == NULL) {
5059                 printk(KERN_WARNING
5060                        "qla4xxx: Couldn't allocate host from scsi layer!\n");
5061                 goto probe_disable_device;
5062         }
5063
5064         /* Clear our data area */
5065         ha = to_qla_host(host);
5066         memset(ha, 0, sizeof(*ha));
5067
5068         /* Save the information from PCI BIOS.  */
5069         ha->pdev = pdev;
5070         ha->host = host;
5071         ha->host_no = host->host_no;
5072
5073         pci_enable_pcie_error_reporting(pdev);
5074
5075         /* Setup Runtime configurable options */
5076         if (is_qla8022(ha)) {
5077                 ha->isp_ops = &qla4_8xxx_isp_ops;
5078                 rwlock_init(&ha->hw_lock);
5079                 ha->qdr_sn_window = -1;
5080                 ha->ddr_mn_window = -1;
5081                 ha->curr_window = 255;
5082                 ha->func_num = PCI_FUNC(ha->pdev->devfn);
5083                 nx_legacy_intr = &legacy_intr[ha->func_num];
5084                 ha->nx_legacy_intr.int_vec_bit = nx_legacy_intr->int_vec_bit;
5085                 ha->nx_legacy_intr.tgt_status_reg =
5086                         nx_legacy_intr->tgt_status_reg;
5087                 ha->nx_legacy_intr.tgt_mask_reg = nx_legacy_intr->tgt_mask_reg;
5088                 ha->nx_legacy_intr.pci_int_reg = nx_legacy_intr->pci_int_reg;
5089         } else {
5090                 ha->isp_ops = &qla4xxx_isp_ops;
5091         }
5092
5093         /* Set EEH reset type to fundamental if required by hba */
5094         if (is_qla8022(ha))
5095                 pdev->needs_freset = 1;
5096
5097         /* Configure PCI I/O space. */
5098         ret = ha->isp_ops->iospace_config(ha);
5099         if (ret)
5100                 goto probe_failed_ioconfig;
5101
5102         ql4_printk(KERN_INFO, ha, "Found an ISP%04x, irq %d, iobase 0x%p\n",
5103                    pdev->device, pdev->irq, ha->reg);
5104
5105         qla4xxx_config_dma_addressing(ha);
5106
5107         /* Initialize lists and spinlocks. */
5108         INIT_LIST_HEAD(&ha->free_srb_q);
5109
5110         mutex_init(&ha->mbox_sem);
5111         mutex_init(&ha->chap_sem);
5112         init_completion(&ha->mbx_intr_comp);
5113         init_completion(&ha->disable_acb_comp);
5114
5115         spin_lock_init(&ha->hardware_lock);
5116         spin_lock_init(&ha->work_lock);
5117
5118         /* Initialize work list */
5119         INIT_LIST_HEAD(&ha->work_list);
5120
5121         /* Allocate dma buffers */
5122         if (qla4xxx_mem_alloc(ha)) {
5123                 ql4_printk(KERN_WARNING, ha,
5124                     "[ERROR] Failed to allocate memory for adapter\n");
5125
5126                 ret = -ENOMEM;
5127                 goto probe_failed;
5128         }
5129
5130         host->cmd_per_lun = 3;
5131         host->max_channel = 0;
5132         host->max_lun = MAX_LUNS - 1;
5133         host->max_id = MAX_TARGETS;
5134         host->max_cmd_len = IOCB_MAX_CDB_LEN;
5135         host->can_queue = MAX_SRBS ;
5136         host->transportt = qla4xxx_scsi_transport;
5137
5138         ret = scsi_init_shared_tag_map(host, MAX_SRBS);
5139         if (ret) {
5140                 ql4_printk(KERN_WARNING, ha,
5141                            "%s: scsi_init_shared_tag_map failed\n", __func__);
5142                 goto probe_failed;
5143         }
5144
5145         pci_set_drvdata(pdev, ha);
5146
5147         ret = scsi_add_host(host, &pdev->dev);
5148         if (ret)
5149                 goto probe_failed;
5150
5151         if (is_qla8022(ha))
5152                 (void) qla4_8xxx_get_flash_info(ha);
5153
5154         /*
5155          * Initialize the Host adapter request/response queues and
5156          * firmware
5157          * NOTE: interrupts enabled upon successful completion
5158          */
5159         status = qla4xxx_initialize_adapter(ha, INIT_ADAPTER);
5160         while ((!test_bit(AF_ONLINE, &ha->flags)) &&
5161             init_retry_count++ < MAX_INIT_RETRIES) {
5162
5163                 if (is_qla8022(ha)) {
5164                         qla4_8xxx_idc_lock(ha);
5165                         dev_state = qla4_8xxx_rd_32(ha, QLA82XX_CRB_DEV_STATE);
5166                         qla4_8xxx_idc_unlock(ha);
5167                         if (dev_state == QLA82XX_DEV_FAILED) {
5168                                 ql4_printk(KERN_WARNING, ha, "%s: don't retry "
5169                                     "initialize adapter. H/W is in failed state\n",
5170                                     __func__);
5171                                 break;
5172                         }
5173                 }
5174                 DEBUG2(printk("scsi: %s: retrying adapter initialization "
5175                               "(%d)\n", __func__, init_retry_count));
5176
5177                 if (ha->isp_ops->reset_chip(ha) == QLA_ERROR)
5178                         continue;
5179
5180                 status = qla4xxx_initialize_adapter(ha, INIT_ADAPTER);
5181         }
5182
5183         if (!test_bit(AF_ONLINE, &ha->flags)) {
5184                 ql4_printk(KERN_WARNING, ha, "Failed to initialize adapter\n");
5185
5186                 if (is_qla8022(ha) && ql4xdontresethba) {
5187                         /* Put the device in failed state. */
5188                         DEBUG2(printk(KERN_ERR "HW STATE: FAILED\n"));
5189                         qla4_8xxx_idc_lock(ha);
5190                         qla4_8xxx_wr_32(ha, QLA82XX_CRB_DEV_STATE,
5191                             QLA82XX_DEV_FAILED);
5192                         qla4_8xxx_idc_unlock(ha);
5193                 }
5194                 ret = -ENODEV;
5195                 goto remove_host;
5196         }
5197
5198         /* Startup the kernel thread for this host adapter. */
5199         DEBUG2(printk("scsi: %s: Starting kernel thread for "
5200                       "qla4xxx_dpc\n", __func__));
5201         sprintf(buf, "qla4xxx_%lu_dpc", ha->host_no);
5202         ha->dpc_thread = create_singlethread_workqueue(buf);
5203         if (!ha->dpc_thread) {
5204                 ql4_printk(KERN_WARNING, ha, "Unable to start DPC thread!\n");
5205                 ret = -ENODEV;
5206                 goto remove_host;
5207         }
5208         INIT_WORK(&ha->dpc_work, qla4xxx_do_dpc);
5209
5210         sprintf(buf, "qla4xxx_%lu_task", ha->host_no);
5211         ha->task_wq = alloc_workqueue(buf, WQ_MEM_RECLAIM, 1);
5212         if (!ha->task_wq) {
5213                 ql4_printk(KERN_WARNING, ha, "Unable to start task thread!\n");
5214                 ret = -ENODEV;
5215                 goto remove_host;
5216         }
5217
5218         /* For ISP-82XX, request_irqs is called in qla4_8xxx_load_risc
5219          * (which is called indirectly by qla4xxx_initialize_adapter),
5220          * so that irqs will be registered after crbinit but before
5221          * mbx_intr_enable.
5222          */
5223         if (!is_qla8022(ha)) {
5224                 ret = qla4xxx_request_irqs(ha);
5225                 if (ret) {
5226                         ql4_printk(KERN_WARNING, ha, "Failed to reserve "
5227                             "interrupt %d already in use.\n", pdev->irq);
5228                         goto remove_host;
5229                 }
5230         }
5231
5232         pci_save_state(ha->pdev);
5233         ha->isp_ops->enable_intrs(ha);
5234
5235         /* Start timer thread. */
5236         qla4xxx_start_timer(ha, qla4xxx_timer, 1);
5237
5238         set_bit(AF_INIT_DONE, &ha->flags);
5239
5240         qla4_8xxx_alloc_sysfs_attr(ha);
5241
5242         printk(KERN_INFO
5243                " QLogic iSCSI HBA Driver version: %s\n"
5244                "  QLogic ISP%04x @ %s, host#=%ld, fw=%02d.%02d.%02d.%02d\n",
5245                qla4xxx_version_str, ha->pdev->device, pci_name(ha->pdev),
5246                ha->host_no, ha->firmware_version[0], ha->firmware_version[1],
5247                ha->patch_number, ha->build_number);
5248
5249         if (qla4xxx_setup_boot_info(ha))
5250                 ql4_printk(KERN_ERR, ha,
5251                            "%s: No iSCSI boot target configured\n", __func__);
5252
5253                 /* Perform the build ddb list and login to each */
5254         qla4xxx_build_ddb_list(ha, INIT_ADAPTER);
5255         iscsi_host_for_each_session(ha->host, qla4xxx_login_flash_ddb);
5256
5257         qla4xxx_create_chap_list(ha);
5258
5259         qla4xxx_create_ifaces(ha);
5260         return 0;
5261
5262 remove_host:
5263         scsi_remove_host(ha->host);
5264
5265 probe_failed:
5266         qla4xxx_free_adapter(ha);
5267
5268 probe_failed_ioconfig:
5269         pci_disable_pcie_error_reporting(pdev);
5270         scsi_host_put(ha->host);
5271
5272 probe_disable_device:
5273         pci_disable_device(pdev);
5274
5275         return ret;
5276 }
5277
5278 /**
5279  * qla4xxx_prevent_other_port_reinit - prevent other port from re-initialize
5280  * @ha: pointer to adapter structure
5281  *
5282  * Mark the other ISP-4xxx port to indicate that the driver is being removed,
5283  * so that the other port will not re-initialize while in the process of
5284  * removing the ha due to driver unload or hba hotplug.
5285  **/
5286 static void qla4xxx_prevent_other_port_reinit(struct scsi_qla_host *ha)
5287 {
5288         struct scsi_qla_host *other_ha = NULL;
5289         struct pci_dev *other_pdev = NULL;
5290         int fn = ISP4XXX_PCI_FN_2;
5291
5292         /*iscsi function numbers for ISP4xxx is 1 and 3*/
5293         if (PCI_FUNC(ha->pdev->devfn) & BIT_1)
5294                 fn = ISP4XXX_PCI_FN_1;
5295
5296         other_pdev =
5297                 pci_get_domain_bus_and_slot(pci_domain_nr(ha->pdev->bus),
5298                 ha->pdev->bus->number, PCI_DEVFN(PCI_SLOT(ha->pdev->devfn),
5299                 fn));
5300
5301         /* Get other_ha if other_pdev is valid and state is enable*/
5302         if (other_pdev) {
5303                 if (atomic_read(&other_pdev->enable_cnt)) {
5304                         other_ha = pci_get_drvdata(other_pdev);
5305                         if (other_ha) {
5306                                 set_bit(AF_HA_REMOVAL, &other_ha->flags);
5307                                 DEBUG2(ql4_printk(KERN_INFO, ha, "%s: "
5308                                     "Prevent %s reinit\n", __func__,
5309                                     dev_name(&other_ha->pdev->dev)));
5310                         }
5311                 }
5312                 pci_dev_put(other_pdev);
5313         }
5314 }
5315
5316 static void qla4xxx_destroy_fw_ddb_session(struct scsi_qla_host *ha)
5317 {
5318         struct ddb_entry *ddb_entry;
5319         int options;
5320         int idx;
5321
5322         for (idx = 0; idx < MAX_DDB_ENTRIES; idx++) {
5323
5324                 ddb_entry = qla4xxx_lookup_ddb_by_fw_index(ha, idx);
5325                 if ((ddb_entry != NULL) &&
5326                     (ddb_entry->ddb_type == FLASH_DDB)) {
5327
5328                         options = LOGOUT_OPTION_CLOSE_SESSION;
5329                         if (qla4xxx_session_logout_ddb(ha, ddb_entry, options)
5330                             == QLA_ERROR)
5331                                 ql4_printk(KERN_ERR, ha, "%s: Logout failed\n",
5332                                            __func__);
5333
5334                         qla4xxx_clear_ddb_entry(ha, ddb_entry->fw_ddb_index);
5335                         /*
5336                          * we have decremented the reference count of the driver
5337                          * when we setup the session to have the driver unload
5338                          * to be seamless without actually destroying the
5339                          * session
5340                          **/
5341                         try_module_get(qla4xxx_iscsi_transport.owner);
5342                         iscsi_destroy_endpoint(ddb_entry->conn->ep);
5343                         qla4xxx_free_ddb(ha, ddb_entry);
5344                         iscsi_session_teardown(ddb_entry->sess);
5345                 }
5346         }
5347 }
5348 /**
5349  * qla4xxx_remove_adapter - calback function to remove adapter.
5350  * @pci_dev: PCI device pointer
5351  **/
5352 static void __devexit qla4xxx_remove_adapter(struct pci_dev *pdev)
5353 {
5354         struct scsi_qla_host *ha;
5355
5356         ha = pci_get_drvdata(pdev);
5357
5358         if (!is_qla8022(ha))
5359                 qla4xxx_prevent_other_port_reinit(ha);
5360
5361         /* destroy iface from sysfs */
5362         qla4xxx_destroy_ifaces(ha);
5363
5364         if ((!ql4xdisablesysfsboot) && ha->boot_kset)
5365                 iscsi_boot_destroy_kset(ha->boot_kset);
5366
5367         qla4xxx_destroy_fw_ddb_session(ha);
5368         qla4_8xxx_free_sysfs_attr(ha);
5369
5370         scsi_remove_host(ha->host);
5371
5372         qla4xxx_free_adapter(ha);
5373
5374         scsi_host_put(ha->host);
5375
5376         pci_disable_pcie_error_reporting(pdev);
5377         pci_disable_device(pdev);
5378         pci_set_drvdata(pdev, NULL);
5379 }
5380
5381 /**
5382  * qla4xxx_config_dma_addressing() - Configure OS DMA addressing method.
5383  * @ha: HA context
5384  *
5385  * At exit, the @ha's flags.enable_64bit_addressing set to indicated
5386  * supported addressing method.
5387  */
5388 static void qla4xxx_config_dma_addressing(struct scsi_qla_host *ha)
5389 {
5390         int retval;
5391
5392         /* Update our PCI device dma_mask for full 64 bit mask */
5393         if (pci_set_dma_mask(ha->pdev, DMA_BIT_MASK(64)) == 0) {
5394                 if (pci_set_consistent_dma_mask(ha->pdev, DMA_BIT_MASK(64))) {
5395                         dev_dbg(&ha->pdev->dev,
5396                                   "Failed to set 64 bit PCI consistent mask; "
5397                                    "using 32 bit.\n");
5398                         retval = pci_set_consistent_dma_mask(ha->pdev,
5399                                                              DMA_BIT_MASK(32));
5400                 }
5401         } else
5402                 retval = pci_set_dma_mask(ha->pdev, DMA_BIT_MASK(32));
5403 }
5404
5405 static int qla4xxx_slave_alloc(struct scsi_device *sdev)
5406 {
5407         struct iscsi_cls_session *cls_sess;
5408         struct iscsi_session *sess;
5409         struct ddb_entry *ddb;
5410         int queue_depth = QL4_DEF_QDEPTH;
5411
5412         cls_sess = starget_to_session(sdev->sdev_target);
5413         sess = cls_sess->dd_data;
5414         ddb = sess->dd_data;
5415
5416         sdev->hostdata = ddb;
5417         sdev->tagged_supported = 1;
5418
5419         if (ql4xmaxqdepth != 0 && ql4xmaxqdepth <= 0xffffU)
5420                 queue_depth = ql4xmaxqdepth;
5421
5422         scsi_activate_tcq(sdev, queue_depth);
5423         return 0;
5424 }
5425
5426 static int qla4xxx_slave_configure(struct scsi_device *sdev)
5427 {
5428         sdev->tagged_supported = 1;
5429         return 0;
5430 }
5431
5432 static void qla4xxx_slave_destroy(struct scsi_device *sdev)
5433 {
5434         scsi_deactivate_tcq(sdev, 1);
5435 }
5436
5437 static int qla4xxx_change_queue_depth(struct scsi_device *sdev, int qdepth,
5438                                       int reason)
5439 {
5440         if (!ql4xqfulltracking)
5441                 return -EOPNOTSUPP;
5442
5443         return iscsi_change_queue_depth(sdev, qdepth, reason);
5444 }
5445
5446 /**
5447  * qla4xxx_del_from_active_array - returns an active srb
5448  * @ha: Pointer to host adapter structure.
5449  * @index: index into the active_array
5450  *
5451  * This routine removes and returns the srb at the specified index
5452  **/
5453 struct srb *qla4xxx_del_from_active_array(struct scsi_qla_host *ha,
5454     uint32_t index)
5455 {
5456         struct srb *srb = NULL;
5457         struct scsi_cmnd *cmd = NULL;
5458
5459         cmd = scsi_host_find_tag(ha->host, index);
5460         if (!cmd)
5461                 return srb;
5462
5463         srb = (struct srb *)CMD_SP(cmd);
5464         if (!srb)
5465                 return srb;
5466
5467         /* update counters */
5468         if (srb->flags & SRB_DMA_VALID) {
5469                 ha->req_q_count += srb->iocb_cnt;
5470                 ha->iocb_cnt -= srb->iocb_cnt;
5471                 if (srb->cmd)
5472                         srb->cmd->host_scribble =
5473                                 (unsigned char *)(unsigned long) MAX_SRBS;
5474         }
5475         return srb;
5476 }
5477
5478 /**
5479  * qla4xxx_eh_wait_on_command - waits for command to be returned by firmware
5480  * @ha: Pointer to host adapter structure.
5481  * @cmd: Scsi Command to wait on.
5482  *
5483  * This routine waits for the command to be returned by the Firmware
5484  * for some max time.
5485  **/
5486 static int qla4xxx_eh_wait_on_command(struct scsi_qla_host *ha,
5487                                       struct scsi_cmnd *cmd)
5488 {
5489         int done = 0;
5490         struct srb *rp;
5491         uint32_t max_wait_time = EH_WAIT_CMD_TOV;
5492         int ret = SUCCESS;
5493
5494         /* Dont wait on command if PCI error is being handled
5495          * by PCI AER driver
5496          */
5497         if (unlikely(pci_channel_offline(ha->pdev)) ||
5498             (test_bit(AF_EEH_BUSY, &ha->flags))) {
5499                 ql4_printk(KERN_WARNING, ha, "scsi%ld: Return from %s\n",
5500                     ha->host_no, __func__);
5501                 return ret;
5502         }
5503
5504         do {
5505                 /* Checking to see if its returned to OS */
5506                 rp = (struct srb *) CMD_SP(cmd);
5507                 if (rp == NULL) {
5508                         done++;
5509                         break;
5510                 }
5511
5512                 msleep(2000);
5513         } while (max_wait_time--);
5514
5515         return done;
5516 }
5517
5518 /**
5519  * qla4xxx_wait_for_hba_online - waits for HBA to come online
5520  * @ha: Pointer to host adapter structure
5521  **/
5522 static int qla4xxx_wait_for_hba_online(struct scsi_qla_host *ha)
5523 {
5524         unsigned long wait_online;
5525
5526         wait_online = jiffies + (HBA_ONLINE_TOV * HZ);
5527         while (time_before(jiffies, wait_online)) {
5528
5529                 if (adapter_up(ha))
5530                         return QLA_SUCCESS;
5531
5532                 msleep(2000);
5533         }
5534
5535         return QLA_ERROR;
5536 }
5537
5538 /**
5539  * qla4xxx_eh_wait_for_commands - wait for active cmds to finish.
5540  * @ha: pointer to HBA
5541  * @t: target id
5542  * @l: lun id
5543  *
5544  * This function waits for all outstanding commands to a lun to complete. It
5545  * returns 0 if all pending commands are returned and 1 otherwise.
5546  **/
5547 static int qla4xxx_eh_wait_for_commands(struct scsi_qla_host *ha,
5548                                         struct scsi_target *stgt,
5549                                         struct scsi_device *sdev)
5550 {
5551         int cnt;
5552         int status = 0;
5553         struct scsi_cmnd *cmd;
5554
5555         /*
5556          * Waiting for all commands for the designated target or dev
5557          * in the active array
5558          */
5559         for (cnt = 0; cnt < ha->host->can_queue; cnt++) {
5560                 cmd = scsi_host_find_tag(ha->host, cnt);
5561                 if (cmd && stgt == scsi_target(cmd->device) &&
5562                     (!sdev || sdev == cmd->device)) {
5563                         if (!qla4xxx_eh_wait_on_command(ha, cmd)) {
5564                                 status++;
5565                                 break;
5566                         }
5567                 }
5568         }
5569         return status;
5570 }
5571
5572 /**
5573  * qla4xxx_eh_abort - callback for abort task.
5574  * @cmd: Pointer to Linux's SCSI command structure
5575  *
5576  * This routine is called by the Linux OS to abort the specified
5577  * command.
5578  **/
5579 static int qla4xxx_eh_abort(struct scsi_cmnd *cmd)
5580 {
5581         struct scsi_qla_host *ha = to_qla_host(cmd->device->host);
5582         unsigned int id = cmd->device->id;
5583         unsigned int lun = cmd->device->lun;
5584         unsigned long flags;
5585         struct srb *srb = NULL;
5586         int ret = SUCCESS;
5587         int wait = 0;
5588
5589         ql4_printk(KERN_INFO, ha,
5590             "scsi%ld:%d:%d: Abort command issued cmd=%p\n",
5591             ha->host_no, id, lun, cmd);
5592
5593         spin_lock_irqsave(&ha->hardware_lock, flags);
5594         srb = (struct srb *) CMD_SP(cmd);
5595         if (!srb) {
5596                 spin_unlock_irqrestore(&ha->hardware_lock, flags);
5597                 return SUCCESS;
5598         }
5599         kref_get(&srb->srb_ref);
5600         spin_unlock_irqrestore(&ha->hardware_lock, flags);
5601
5602         if (qla4xxx_abort_task(ha, srb) != QLA_SUCCESS) {
5603                 DEBUG3(printk("scsi%ld:%d:%d: Abort_task mbx failed.\n",
5604                     ha->host_no, id, lun));
5605                 ret = FAILED;
5606         } else {
5607                 DEBUG3(printk("scsi%ld:%d:%d: Abort_task mbx success.\n",
5608                     ha->host_no, id, lun));
5609                 wait = 1;
5610         }
5611
5612         kref_put(&srb->srb_ref, qla4xxx_srb_compl);
5613
5614         /* Wait for command to complete */
5615         if (wait) {
5616                 if (!qla4xxx_eh_wait_on_command(ha, cmd)) {
5617                         DEBUG2(printk("scsi%ld:%d:%d: Abort handler timed out\n",
5618                             ha->host_no, id, lun));
5619                         ret = FAILED;
5620                 }
5621         }
5622
5623         ql4_printk(KERN_INFO, ha,
5624             "scsi%ld:%d:%d: Abort command - %s\n",
5625             ha->host_no, id, lun, (ret == SUCCESS) ? "succeeded" : "failed");
5626
5627         return ret;
5628 }
5629
5630 /**
5631  * qla4xxx_eh_device_reset - callback for target reset.
5632  * @cmd: Pointer to Linux's SCSI command structure
5633  *
5634  * This routine is called by the Linux OS to reset all luns on the
5635  * specified target.
5636  **/
5637 static int qla4xxx_eh_device_reset(struct scsi_cmnd *cmd)
5638 {
5639         struct scsi_qla_host *ha = to_qla_host(cmd->device->host);
5640         struct ddb_entry *ddb_entry = cmd->device->hostdata;
5641         int ret = FAILED, stat;
5642
5643         if (!ddb_entry)
5644                 return ret;
5645
5646         ret = iscsi_block_scsi_eh(cmd);
5647         if (ret)
5648                 return ret;
5649         ret = FAILED;
5650
5651         ql4_printk(KERN_INFO, ha,
5652                    "scsi%ld:%d:%d:%d: DEVICE RESET ISSUED.\n", ha->host_no,
5653                    cmd->device->channel, cmd->device->id, cmd->device->lun);
5654
5655         DEBUG2(printk(KERN_INFO
5656                       "scsi%ld: DEVICE_RESET cmd=%p jiffies = 0x%lx, to=%x,"
5657                       "dpc_flags=%lx, status=%x allowed=%d\n", ha->host_no,
5658                       cmd, jiffies, cmd->request->timeout / HZ,
5659                       ha->dpc_flags, cmd->result, cmd->allowed));
5660
5661         /* FIXME: wait for hba to go online */
5662         stat = qla4xxx_reset_lun(ha, ddb_entry, cmd->device->lun);
5663         if (stat != QLA_SUCCESS) {
5664                 ql4_printk(KERN_INFO, ha, "DEVICE RESET FAILED. %d\n", stat);
5665                 goto eh_dev_reset_done;
5666         }
5667
5668         if (qla4xxx_eh_wait_for_commands(ha, scsi_target(cmd->device),
5669                                          cmd->device)) {
5670                 ql4_printk(KERN_INFO, ha,
5671                            "DEVICE RESET FAILED - waiting for "
5672                            "commands.\n");
5673                 goto eh_dev_reset_done;
5674         }
5675
5676         /* Send marker. */
5677         if (qla4xxx_send_marker_iocb(ha, ddb_entry, cmd->device->lun,
5678                 MM_LUN_RESET) != QLA_SUCCESS)
5679                 goto eh_dev_reset_done;
5680
5681         ql4_printk(KERN_INFO, ha,
5682                    "scsi(%ld:%d:%d:%d): DEVICE RESET SUCCEEDED.\n",
5683                    ha->host_no, cmd->device->channel, cmd->device->id,
5684                    cmd->device->lun);
5685
5686         ret = SUCCESS;
5687
5688 eh_dev_reset_done:
5689
5690         return ret;
5691 }
5692
5693 /**
5694  * qla4xxx_eh_target_reset - callback for target reset.
5695  * @cmd: Pointer to Linux's SCSI command structure
5696  *
5697  * This routine is called by the Linux OS to reset the target.
5698  **/
5699 static int qla4xxx_eh_target_reset(struct scsi_cmnd *cmd)
5700 {
5701         struct scsi_qla_host *ha = to_qla_host(cmd->device->host);
5702         struct ddb_entry *ddb_entry = cmd->device->hostdata;
5703         int stat, ret;
5704
5705         if (!ddb_entry)
5706                 return FAILED;
5707
5708         ret = iscsi_block_scsi_eh(cmd);
5709         if (ret)
5710                 return ret;
5711
5712         starget_printk(KERN_INFO, scsi_target(cmd->device),
5713                        "WARM TARGET RESET ISSUED.\n");
5714
5715         DEBUG2(printk(KERN_INFO
5716                       "scsi%ld: TARGET_DEVICE_RESET cmd=%p jiffies = 0x%lx, "
5717                       "to=%x,dpc_flags=%lx, status=%x allowed=%d\n",
5718                       ha->host_no, cmd, jiffies, cmd->request->timeout / HZ,
5719                       ha->dpc_flags, cmd->result, cmd->allowed));
5720
5721         stat = qla4xxx_reset_target(ha, ddb_entry);
5722         if (stat != QLA_SUCCESS) {
5723                 starget_printk(KERN_INFO, scsi_target(cmd->device),
5724                                "WARM TARGET RESET FAILED.\n");
5725                 return FAILED;
5726         }
5727
5728         if (qla4xxx_eh_wait_for_commands(ha, scsi_target(cmd->device),
5729                                          NULL)) {
5730                 starget_printk(KERN_INFO, scsi_target(cmd->device),
5731                                "WARM TARGET DEVICE RESET FAILED - "
5732                                "waiting for commands.\n");
5733                 return FAILED;
5734         }
5735
5736         /* Send marker. */
5737         if (qla4xxx_send_marker_iocb(ha, ddb_entry, cmd->device->lun,
5738                 MM_TGT_WARM_RESET) != QLA_SUCCESS) {
5739                 starget_printk(KERN_INFO, scsi_target(cmd->device),
5740                                "WARM TARGET DEVICE RESET FAILED - "
5741                                "marker iocb failed.\n");
5742                 return FAILED;
5743         }
5744
5745         starget_printk(KERN_INFO, scsi_target(cmd->device),
5746                        "WARM TARGET RESET SUCCEEDED.\n");
5747         return SUCCESS;
5748 }
5749
5750 /**
5751  * qla4xxx_is_eh_active - check if error handler is running
5752  * @shost: Pointer to SCSI Host struct
5753  *
5754  * This routine finds that if reset host is called in EH
5755  * scenario or from some application like sg_reset
5756  **/
5757 static int qla4xxx_is_eh_active(struct Scsi_Host *shost)
5758 {
5759         if (shost->shost_state == SHOST_RECOVERY)
5760                 return 1;
5761         return 0;
5762 }
5763
5764 /**
5765  * qla4xxx_eh_host_reset - kernel callback
5766  * @cmd: Pointer to Linux's SCSI command structure
5767  *
5768  * This routine is invoked by the Linux kernel to perform fatal error
5769  * recovery on the specified adapter.
5770  **/
5771 static int qla4xxx_eh_host_reset(struct scsi_cmnd *cmd)
5772 {
5773         int return_status = FAILED;
5774         struct scsi_qla_host *ha;
5775
5776         ha = to_qla_host(cmd->device->host);
5777
5778         if (ql4xdontresethba) {
5779                 DEBUG2(printk("scsi%ld: %s: Don't Reset HBA\n",
5780                      ha->host_no, __func__));
5781
5782                 /* Clear outstanding srb in queues */
5783                 if (qla4xxx_is_eh_active(cmd->device->host))
5784                         qla4xxx_abort_active_cmds(ha, DID_ABORT << 16);
5785
5786                 return FAILED;
5787         }
5788
5789         ql4_printk(KERN_INFO, ha,
5790                    "scsi(%ld:%d:%d:%d): HOST RESET ISSUED.\n", ha->host_no,
5791                    cmd->device->channel, cmd->device->id, cmd->device->lun);
5792
5793         if (qla4xxx_wait_for_hba_online(ha) != QLA_SUCCESS) {
5794                 DEBUG2(printk("scsi%ld:%d: %s: Unable to reset host.  Adapter "
5795                               "DEAD.\n", ha->host_no, cmd->device->channel,
5796                               __func__));
5797
5798                 return FAILED;
5799         }
5800
5801         if (!test_bit(DPC_RESET_HA, &ha->dpc_flags)) {
5802                 if (is_qla8022(ha))
5803                         set_bit(DPC_RESET_HA_FW_CONTEXT, &ha->dpc_flags);
5804                 else
5805                         set_bit(DPC_RESET_HA, &ha->dpc_flags);
5806         }
5807
5808         if (qla4xxx_recover_adapter(ha) == QLA_SUCCESS)
5809                 return_status = SUCCESS;
5810
5811         ql4_printk(KERN_INFO, ha, "HOST RESET %s.\n",
5812                    return_status == FAILED ? "FAILED" : "SUCCEEDED");
5813
5814         return return_status;
5815 }
5816
5817 static int qla4xxx_context_reset(struct scsi_qla_host *ha)
5818 {
5819         uint32_t mbox_cmd[MBOX_REG_COUNT];
5820         uint32_t mbox_sts[MBOX_REG_COUNT];
5821         struct addr_ctrl_blk_def *acb = NULL;
5822         uint32_t acb_len = sizeof(struct addr_ctrl_blk_def);
5823         int rval = QLA_SUCCESS;
5824         dma_addr_t acb_dma;
5825
5826         acb = dma_alloc_coherent(&ha->pdev->dev,
5827                                  sizeof(struct addr_ctrl_blk_def),
5828                                  &acb_dma, GFP_KERNEL);
5829         if (!acb) {
5830                 ql4_printk(KERN_ERR, ha, "%s: Unable to alloc acb\n",
5831                            __func__);
5832                 rval = -ENOMEM;
5833                 goto exit_port_reset;
5834         }
5835
5836         memset(acb, 0, acb_len);
5837
5838         rval = qla4xxx_get_acb(ha, acb_dma, PRIMARI_ACB, acb_len);
5839         if (rval != QLA_SUCCESS) {
5840                 rval = -EIO;
5841                 goto exit_free_acb;
5842         }
5843
5844         rval = qla4xxx_disable_acb(ha);
5845         if (rval != QLA_SUCCESS) {
5846                 rval = -EIO;
5847                 goto exit_free_acb;
5848         }
5849
5850         wait_for_completion_timeout(&ha->disable_acb_comp,
5851                                     DISABLE_ACB_TOV * HZ);
5852
5853         rval = qla4xxx_set_acb(ha, &mbox_cmd[0], &mbox_sts[0], acb_dma);
5854         if (rval != QLA_SUCCESS) {
5855                 rval = -EIO;
5856                 goto exit_free_acb;
5857         }
5858
5859 exit_free_acb:
5860         dma_free_coherent(&ha->pdev->dev, sizeof(struct addr_ctrl_blk_def),
5861                           acb, acb_dma);
5862 exit_port_reset:
5863         DEBUG2(ql4_printk(KERN_INFO, ha, "%s %s\n", __func__,
5864                           rval == QLA_SUCCESS ? "SUCCEEDED" : "FAILED"));
5865         return rval;
5866 }
5867
5868 static int qla4xxx_host_reset(struct Scsi_Host *shost, int reset_type)
5869 {
5870         struct scsi_qla_host *ha = to_qla_host(shost);
5871         int rval = QLA_SUCCESS;
5872
5873         if (ql4xdontresethba) {
5874                 DEBUG2(ql4_printk(KERN_INFO, ha, "%s: Don't Reset HBA\n",
5875                                   __func__));
5876                 rval = -EPERM;
5877                 goto exit_host_reset;
5878         }
5879
5880         rval = qla4xxx_wait_for_hba_online(ha);
5881         if (rval != QLA_SUCCESS) {
5882                 DEBUG2(ql4_printk(KERN_INFO, ha, "%s: Unable to reset host "
5883                                   "adapter\n", __func__));
5884                 rval = -EIO;
5885                 goto exit_host_reset;
5886         }
5887
5888         if (test_bit(DPC_RESET_HA, &ha->dpc_flags))
5889                 goto recover_adapter;
5890
5891         switch (reset_type) {
5892         case SCSI_ADAPTER_RESET:
5893                 set_bit(DPC_RESET_HA, &ha->dpc_flags);
5894                 break;
5895         case SCSI_FIRMWARE_RESET:
5896                 if (!test_bit(DPC_RESET_HA, &ha->dpc_flags)) {
5897                         if (is_qla8022(ha))
5898                                 /* set firmware context reset */
5899                                 set_bit(DPC_RESET_HA_FW_CONTEXT,
5900                                         &ha->dpc_flags);
5901                         else {
5902                                 rval = qla4xxx_context_reset(ha);
5903                                 goto exit_host_reset;
5904                         }
5905                 }
5906                 break;
5907         }
5908
5909 recover_adapter:
5910         rval = qla4xxx_recover_adapter(ha);
5911         if (rval != QLA_SUCCESS) {
5912                 DEBUG2(ql4_printk(KERN_INFO, ha, "%s: recover adapter fail\n",
5913                                   __func__));
5914                 rval = -EIO;
5915         }
5916
5917 exit_host_reset:
5918         return rval;
5919 }
5920
5921 /* PCI AER driver recovers from all correctable errors w/o
5922  * driver intervention. For uncorrectable errors PCI AER
5923  * driver calls the following device driver's callbacks
5924  *
5925  * - Fatal Errors - link_reset
5926  * - Non-Fatal Errors - driver's pci_error_detected() which
5927  * returns CAN_RECOVER, NEED_RESET or DISCONNECT.
5928  *
5929  * PCI AER driver calls
5930  * CAN_RECOVER - driver's pci_mmio_enabled(), mmio_enabled
5931  *               returns RECOVERED or NEED_RESET if fw_hung
5932  * NEED_RESET - driver's slot_reset()
5933  * DISCONNECT - device is dead & cannot recover
5934  * RECOVERED - driver's pci_resume()
5935  */
5936 static pci_ers_result_t
5937 qla4xxx_pci_error_detected(struct pci_dev *pdev, pci_channel_state_t state)
5938 {
5939         struct scsi_qla_host *ha = pci_get_drvdata(pdev);
5940
5941         ql4_printk(KERN_WARNING, ha, "scsi%ld: %s: error detected:state %x\n",
5942             ha->host_no, __func__, state);
5943
5944         if (!is_aer_supported(ha))
5945                 return PCI_ERS_RESULT_NONE;
5946
5947         switch (state) {
5948         case pci_channel_io_normal:
5949                 clear_bit(AF_EEH_BUSY, &ha->flags);
5950                 return PCI_ERS_RESULT_CAN_RECOVER;
5951         case pci_channel_io_frozen:
5952                 set_bit(AF_EEH_BUSY, &ha->flags);
5953                 qla4xxx_mailbox_premature_completion(ha);
5954                 qla4xxx_free_irqs(ha);
5955                 pci_disable_device(pdev);
5956                 /* Return back all IOs */
5957                 qla4xxx_abort_active_cmds(ha, DID_RESET << 16);
5958                 return PCI_ERS_RESULT_NEED_RESET;
5959         case pci_channel_io_perm_failure:
5960                 set_bit(AF_EEH_BUSY, &ha->flags);
5961                 set_bit(AF_PCI_CHANNEL_IO_PERM_FAILURE, &ha->flags);
5962                 qla4xxx_abort_active_cmds(ha, DID_NO_CONNECT << 16);
5963                 return PCI_ERS_RESULT_DISCONNECT;
5964         }
5965         return PCI_ERS_RESULT_NEED_RESET;
5966 }
5967
5968 /**
5969  * qla4xxx_pci_mmio_enabled() gets called if
5970  * qla4xxx_pci_error_detected() returns PCI_ERS_RESULT_CAN_RECOVER
5971  * and read/write to the device still works.
5972  **/
5973 static pci_ers_result_t
5974 qla4xxx_pci_mmio_enabled(struct pci_dev *pdev)
5975 {
5976         struct scsi_qla_host *ha = pci_get_drvdata(pdev);
5977
5978         if (!is_aer_supported(ha))
5979                 return PCI_ERS_RESULT_NONE;
5980
5981         return PCI_ERS_RESULT_RECOVERED;
5982 }
5983
5984 static uint32_t qla4_8xxx_error_recovery(struct scsi_qla_host *ha)
5985 {
5986         uint32_t rval = QLA_ERROR;
5987         uint32_t ret = 0;
5988         int fn;
5989         struct pci_dev *other_pdev = NULL;
5990
5991         ql4_printk(KERN_WARNING, ha, "scsi%ld: In %s\n", ha->host_no, __func__);
5992
5993         set_bit(DPC_RESET_ACTIVE, &ha->dpc_flags);
5994
5995         if (test_bit(AF_ONLINE, &ha->flags)) {
5996                 clear_bit(AF_ONLINE, &ha->flags);
5997                 clear_bit(AF_LINK_UP, &ha->flags);
5998                 iscsi_host_for_each_session(ha->host, qla4xxx_fail_session);
5999                 qla4xxx_process_aen(ha, FLUSH_DDB_CHANGED_AENS);
6000         }
6001
6002         fn = PCI_FUNC(ha->pdev->devfn);
6003         while (fn > 0) {
6004                 fn--;
6005                 ql4_printk(KERN_INFO, ha, "scsi%ld: %s: Finding PCI device at "
6006                     "func %x\n", ha->host_no, __func__, fn);
6007                 /* Get the pci device given the domain, bus,
6008                  * slot/function number */
6009                 other_pdev =
6010                     pci_get_domain_bus_and_slot(pci_domain_nr(ha->pdev->bus),
6011                     ha->pdev->bus->number, PCI_DEVFN(PCI_SLOT(ha->pdev->devfn),
6012                     fn));
6013
6014                 if (!other_pdev)
6015                         continue;
6016
6017                 if (atomic_read(&other_pdev->enable_cnt)) {
6018                         ql4_printk(KERN_INFO, ha, "scsi%ld: %s: Found PCI "
6019                             "func in enabled state%x\n", ha->host_no,
6020                             __func__, fn);
6021                         pci_dev_put(other_pdev);
6022                         break;
6023                 }
6024                 pci_dev_put(other_pdev);
6025         }
6026
6027         /* The first function on the card, the reset owner will
6028          * start & initialize the firmware. The other functions
6029          * on the card will reset the firmware context
6030          */
6031         if (!fn) {
6032                 ql4_printk(KERN_INFO, ha, "scsi%ld: %s: devfn being reset "
6033                     "0x%x is the owner\n", ha->host_no, __func__,
6034                     ha->pdev->devfn);
6035
6036                 qla4_8xxx_idc_lock(ha);
6037                 qla4_8xxx_wr_32(ha, QLA82XX_CRB_DEV_STATE,
6038                     QLA82XX_DEV_COLD);
6039
6040                 qla4_8xxx_wr_32(ha, QLA82XX_CRB_DRV_IDC_VERSION,
6041                     QLA82XX_IDC_VERSION);
6042
6043                 qla4_8xxx_idc_unlock(ha);
6044                 clear_bit(AF_FW_RECOVERY, &ha->flags);
6045                 rval = qla4xxx_initialize_adapter(ha, RESET_ADAPTER);
6046                 qla4_8xxx_idc_lock(ha);
6047
6048                 if (rval != QLA_SUCCESS) {
6049                         ql4_printk(KERN_INFO, ha, "scsi%ld: %s: HW State: "
6050                             "FAILED\n", ha->host_no, __func__);
6051                         qla4_8xxx_clear_drv_active(ha);
6052                         qla4_8xxx_wr_32(ha, QLA82XX_CRB_DEV_STATE,
6053                             QLA82XX_DEV_FAILED);
6054                 } else {
6055                         ql4_printk(KERN_INFO, ha, "scsi%ld: %s: HW State: "
6056                             "READY\n", ha->host_no, __func__);
6057                         qla4_8xxx_wr_32(ha, QLA82XX_CRB_DEV_STATE,
6058                             QLA82XX_DEV_READY);
6059                         /* Clear driver state register */
6060                         qla4_8xxx_wr_32(ha, QLA82XX_CRB_DRV_STATE, 0);
6061                         qla4_8xxx_set_drv_active(ha);
6062                         ret = qla4xxx_request_irqs(ha);
6063                         if (ret) {
6064                                 ql4_printk(KERN_WARNING, ha, "Failed to "
6065                                     "reserve interrupt %d already in use.\n",
6066                                     ha->pdev->irq);
6067                                 rval = QLA_ERROR;
6068                         } else {
6069                                 ha->isp_ops->enable_intrs(ha);
6070                                 rval = QLA_SUCCESS;
6071                         }
6072                 }
6073                 qla4_8xxx_idc_unlock(ha);
6074         } else {
6075                 ql4_printk(KERN_INFO, ha, "scsi%ld: %s: devfn 0x%x is not "
6076                     "the reset owner\n", ha->host_no, __func__,
6077                     ha->pdev->devfn);
6078                 if ((qla4_8xxx_rd_32(ha, QLA82XX_CRB_DEV_STATE) ==
6079                     QLA82XX_DEV_READY)) {
6080                         clear_bit(AF_FW_RECOVERY, &ha->flags);
6081                         rval = qla4xxx_initialize_adapter(ha, RESET_ADAPTER);
6082                         if (rval == QLA_SUCCESS) {
6083                                 ret = qla4xxx_request_irqs(ha);
6084                                 if (ret) {
6085                                         ql4_printk(KERN_WARNING, ha, "Failed to"
6086                                             " reserve interrupt %d already in"
6087                                             " use.\n", ha->pdev->irq);
6088                                         rval = QLA_ERROR;
6089                                 } else {
6090                                         ha->isp_ops->enable_intrs(ha);
6091                                         rval = QLA_SUCCESS;
6092                                 }
6093                         }
6094                         qla4_8xxx_idc_lock(ha);
6095                         qla4_8xxx_set_drv_active(ha);
6096                         qla4_8xxx_idc_unlock(ha);
6097                 }
6098         }
6099         clear_bit(DPC_RESET_ACTIVE, &ha->dpc_flags);
6100         return rval;
6101 }
6102
6103 static pci_ers_result_t
6104 qla4xxx_pci_slot_reset(struct pci_dev *pdev)
6105 {
6106         pci_ers_result_t ret = PCI_ERS_RESULT_DISCONNECT;
6107         struct scsi_qla_host *ha = pci_get_drvdata(pdev);
6108         int rc;
6109
6110         ql4_printk(KERN_WARNING, ha, "scsi%ld: %s: slot_reset\n",
6111             ha->host_no, __func__);
6112
6113         if (!is_aer_supported(ha))
6114                 return PCI_ERS_RESULT_NONE;
6115
6116         /* Restore the saved state of PCIe device -
6117          * BAR registers, PCI Config space, PCIX, MSI,
6118          * IOV states
6119          */
6120         pci_restore_state(pdev);
6121
6122         /* pci_restore_state() clears the saved_state flag of the device
6123          * save restored state which resets saved_state flag
6124          */
6125         pci_save_state(pdev);
6126
6127         /* Initialize device or resume if in suspended state */
6128         rc = pci_enable_device(pdev);
6129         if (rc) {
6130                 ql4_printk(KERN_WARNING, ha, "scsi%ld: %s: Can't re-enable "
6131                     "device after reset\n", ha->host_no, __func__);
6132                 goto exit_slot_reset;
6133         }
6134
6135         ha->isp_ops->disable_intrs(ha);
6136
6137         if (is_qla8022(ha)) {
6138                 if (qla4_8xxx_error_recovery(ha) == QLA_SUCCESS) {
6139                         ret = PCI_ERS_RESULT_RECOVERED;
6140                         goto exit_slot_reset;
6141                 } else
6142                         goto exit_slot_reset;
6143         }
6144
6145 exit_slot_reset:
6146         ql4_printk(KERN_WARNING, ha, "scsi%ld: %s: Return=%x\n"
6147             "device after reset\n", ha->host_no, __func__, ret);
6148         return ret;
6149 }
6150
6151 static void
6152 qla4xxx_pci_resume(struct pci_dev *pdev)
6153 {
6154         struct scsi_qla_host *ha = pci_get_drvdata(pdev);
6155         int ret;
6156
6157         ql4_printk(KERN_WARNING, ha, "scsi%ld: %s: pci_resume\n",
6158             ha->host_no, __func__);
6159
6160         ret = qla4xxx_wait_for_hba_online(ha);
6161         if (ret != QLA_SUCCESS) {
6162                 ql4_printk(KERN_ERR, ha, "scsi%ld: %s: the device failed to "
6163                     "resume I/O from slot/link_reset\n", ha->host_no,
6164                      __func__);
6165         }
6166
6167         pci_cleanup_aer_uncorrect_error_status(pdev);
6168         clear_bit(AF_EEH_BUSY, &ha->flags);
6169 }
6170
6171 static struct pci_error_handlers qla4xxx_err_handler = {
6172         .error_detected = qla4xxx_pci_error_detected,
6173         .mmio_enabled = qla4xxx_pci_mmio_enabled,
6174         .slot_reset = qla4xxx_pci_slot_reset,
6175         .resume = qla4xxx_pci_resume,
6176 };
6177
6178 static struct pci_device_id qla4xxx_pci_tbl[] = {
6179         {
6180                 .vendor         = PCI_VENDOR_ID_QLOGIC,
6181                 .device         = PCI_DEVICE_ID_QLOGIC_ISP4010,
6182                 .subvendor      = PCI_ANY_ID,
6183                 .subdevice      = PCI_ANY_ID,
6184         },
6185         {
6186                 .vendor         = PCI_VENDOR_ID_QLOGIC,
6187                 .device         = PCI_DEVICE_ID_QLOGIC_ISP4022,
6188                 .subvendor      = PCI_ANY_ID,
6189                 .subdevice      = PCI_ANY_ID,
6190         },
6191         {
6192                 .vendor         = PCI_VENDOR_ID_QLOGIC,
6193                 .device         = PCI_DEVICE_ID_QLOGIC_ISP4032,
6194                 .subvendor      = PCI_ANY_ID,
6195                 .subdevice      = PCI_ANY_ID,
6196         },
6197         {
6198                 .vendor         = PCI_VENDOR_ID_QLOGIC,
6199                 .device         = PCI_DEVICE_ID_QLOGIC_ISP8022,
6200                 .subvendor      = PCI_ANY_ID,
6201                 .subdevice      = PCI_ANY_ID,
6202         },
6203         {0, 0},
6204 };
6205 MODULE_DEVICE_TABLE(pci, qla4xxx_pci_tbl);
6206
6207 static struct pci_driver qla4xxx_pci_driver = {
6208         .name           = DRIVER_NAME,
6209         .id_table       = qla4xxx_pci_tbl,
6210         .probe          = qla4xxx_probe_adapter,
6211         .remove         = qla4xxx_remove_adapter,
6212         .err_handler = &qla4xxx_err_handler,
6213 };
6214
6215 static int __init qla4xxx_module_init(void)
6216 {
6217         int ret;
6218
6219         /* Allocate cache for SRBs. */
6220         srb_cachep = kmem_cache_create("qla4xxx_srbs", sizeof(struct srb), 0,
6221                                        SLAB_HWCACHE_ALIGN, NULL);
6222         if (srb_cachep == NULL) {
6223                 printk(KERN_ERR
6224                        "%s: Unable to allocate SRB cache..."
6225                        "Failing load!\n", DRIVER_NAME);
6226                 ret = -ENOMEM;
6227                 goto no_srp_cache;
6228         }
6229
6230         /* Derive version string. */
6231         strcpy(qla4xxx_version_str, QLA4XXX_DRIVER_VERSION);
6232         if (ql4xextended_error_logging)
6233                 strcat(qla4xxx_version_str, "-debug");
6234
6235         qla4xxx_scsi_transport =
6236                 iscsi_register_transport(&qla4xxx_iscsi_transport);
6237         if (!qla4xxx_scsi_transport){
6238                 ret = -ENODEV;
6239                 goto release_srb_cache;
6240         }
6241
6242         ret = pci_register_driver(&qla4xxx_pci_driver);
6243         if (ret)
6244                 goto unregister_transport;
6245
6246         printk(KERN_INFO "QLogic iSCSI HBA Driver\n");
6247         return 0;
6248
6249 unregister_transport:
6250         iscsi_unregister_transport(&qla4xxx_iscsi_transport);
6251 release_srb_cache:
6252         kmem_cache_destroy(srb_cachep);
6253 no_srp_cache:
6254         return ret;
6255 }
6256
6257 static void __exit qla4xxx_module_exit(void)
6258 {
6259         pci_unregister_driver(&qla4xxx_pci_driver);
6260         iscsi_unregister_transport(&qla4xxx_iscsi_transport);
6261         kmem_cache_destroy(srb_cachep);
6262 }
6263
6264 module_init(qla4xxx_module_init);
6265 module_exit(qla4xxx_module_exit);
6266
6267 MODULE_AUTHOR("QLogic Corporation");
6268 MODULE_DESCRIPTION("QLogic iSCSI HBA Driver");
6269 MODULE_LICENSE("GPL");
6270 MODULE_VERSION(QLA4XXX_DRIVER_VERSION);