drivers/scsi/qla4xxx/ql4_os.c

   1 /*
   2  * QLogic iSCSI HBA Driver
   3  * Copyright (c)  2003-2012 QLogic Corporation
   4  *
   5  * See LICENSE.qla4xxx for copyright and licensing details.
   6  */
   7 #include <linux/moduleparam.h>
   8 #include <linux/slab.h>
   9 #include <linux/blkdev.h>
  10 #include <linux/iscsi_boot_sysfs.h>
  11 #include <linux/inet.h>
  12
  13 #include <scsi/scsi_tcq.h>
  14 #include <scsi/scsicam.h>
  15
  16 #include "ql4_def.h"
  17 #include "ql4_version.h"
  18 #include "ql4_glbl.h"
  19 #include "ql4_dbg.h"
  20 #include "ql4_inline.h"
  21 #include "ql4_83xx.h"
  22
  23 /*
  24  * Driver version
  25  */
  26 static char qla4xxx_version_str[40];
  27
  28 /*
  29  * SRB allocation cache
  30  */
  31 static struct kmem_cache *srb_cachep;
  32
  33 /*
  34  * Module parameter information and variables
  35  */
  36 static int ql4xdisablesysfsboot = 1;
  37 module_param(ql4xdisablesysfsboot, int, S_IRUGO | S_IWUSR);
  38 MODULE_PARM_DESC(ql4xdisablesysfsboot,
  39                  " Set to disable exporting boot targets to sysfs.\n"
  40                  "\t\t  0 - Export boot targets\n"
  41                  "\t\t  1 - Do not export boot targets (Default)");
  42
  43 int ql4xdontresethba;
  44 module_param(ql4xdontresethba, int, S_IRUGO | S_IWUSR);
  45 MODULE_PARM_DESC(ql4xdontresethba,
  46                  " Don't reset the HBA for driver recovery.\n"
  47                  "\t\t  0 - It will reset HBA (Default)\n"
  48                  "\t\t  1 - It will NOT reset HBA");
  49
  50 int ql4xextended_error_logging;
  51 module_param(ql4xextended_error_logging, int, S_IRUGO | S_IWUSR);
  52 MODULE_PARM_DESC(ql4xextended_error_logging,
  53                  " Option to enable extended error logging.\n"
  54                  "\t\t  0 - no logging (Default)\n"
  55                  "\t\t  2 - debug logging");
  56
  57 int ql4xenablemsix = 1;
  58 module_param(ql4xenablemsix, int, S_IRUGO|S_IWUSR);
  59 MODULE_PARM_DESC(ql4xenablemsix,
  60                  " Set to enable MSI or MSI-X interrupt mechanism.\n"
  61                  "\t\t  0 = enable INTx interrupt mechanism.\n"
  62                  "\t\t  1 = enable MSI-X interrupt mechanism (Default).\n"
  63                  "\t\t  2 = enable MSI interrupt mechanism.");
  64
  65 #define QL4_DEF_QDEPTH 32
  66 static int ql4xmaxqdepth = QL4_DEF_QDEPTH;
  67 module_param(ql4xmaxqdepth, int, S_IRUGO | S_IWUSR);
  68 MODULE_PARM_DESC(ql4xmaxqdepth,
  69                  " Maximum queue depth to report for target devices.\n"
  70                  "\t\t  Default: 32.");
  71
  72 static int ql4xqfulltracking = 1;
  73 module_param(ql4xqfulltracking, int, S_IRUGO | S_IWUSR);
  74 MODULE_PARM_DESC(ql4xqfulltracking,
  75                  " Enable or disable dynamic tracking and adjustment of\n"
  76                  "\t\t scsi device queue depth.\n"
  77                  "\t\t  0 - Disable.\n"
  78                  "\t\t  1 - Enable. (Default)");
  79
  80 static int ql4xsess_recovery_tmo = QL4_SESS_RECOVERY_TMO;
  81 module_param(ql4xsess_recovery_tmo, int, S_IRUGO);
  82 MODULE_PARM_DESC(ql4xsess_recovery_tmo,
  83                 " Target Session Recovery Timeout.\n"
  84                 "\t\t  Default: 120 sec.");
  85
  86 int ql4xmdcapmask = 0x1F;
  87 module_param(ql4xmdcapmask, int, S_IRUGO);
  88 MODULE_PARM_DESC(ql4xmdcapmask,
  89                  " Set the Minidump driver capture mask level.\n"
  90                  "\t\t  Default is 0x1F.\n"
  91                  "\t\t  Can be set to 0x3, 0x7, 0xF, 0x1F, 0x3F, 0x7F");
  92
  93 int ql4xenablemd = 1;
  94 module_param(ql4xenablemd, int, S_IRUGO | S_IWUSR);
  95 MODULE_PARM_DESC(ql4xenablemd,
  96                  " Set to enable minidump.\n"
  97                  "\t\t  0 - disable minidump\n"
  98                  "\t\t  1 - enable minidump (Default)");
  99
 100 static int qla4xxx_wait_for_hba_online(struct scsi_qla_host *ha);
 101 /*
 102  * SCSI host template entry points
 103  */
 104 static void qla4xxx_config_dma_addressing(struct scsi_qla_host *ha);
 105
 106 /*
 107  * iSCSI template entry points
 108  */
 109 static int qla4xxx_session_get_param(struct iscsi_cls_session *cls_sess,
 110                                      enum iscsi_param param, char *buf);
 111 static int qla4xxx_conn_get_param(struct iscsi_cls_conn *conn,
 112                                   enum iscsi_param param, char *buf);
 113 static int qla4xxx_host_get_param(struct Scsi_Host *shost,
 114                                   enum iscsi_host_param param, char *buf);
 115 static int qla4xxx_iface_set_param(struct Scsi_Host *shost, void *data,
 116                                    uint32_t len);
 117 static int qla4xxx_get_iface_param(struct iscsi_iface *iface,
 118                                    enum iscsi_param_type param_type,
 119                                    int param, char *buf);
 120 static enum blk_eh_timer_return qla4xxx_eh_cmd_timed_out(struct scsi_cmnd *sc);
 121 static struct iscsi_endpoint *qla4xxx_ep_connect(struct Scsi_Host *shost,
 122                                                  struct sockaddr *dst_addr,
 123                                                  int non_blocking);
 124 static int qla4xxx_ep_poll(struct iscsi_endpoint *ep, int timeout_ms);
 125 static void qla4xxx_ep_disconnect(struct iscsi_endpoint *ep);
 126 static int qla4xxx_get_ep_param(struct iscsi_endpoint *ep,
 127                                 enum iscsi_param param, char *buf);
 128 static int qla4xxx_conn_start(struct iscsi_cls_conn *conn);
 129 static struct iscsi_cls_conn *
 130 qla4xxx_conn_create(struct iscsi_cls_session *cls_sess, uint32_t conn_idx);
 131 static int qla4xxx_conn_bind(struct iscsi_cls_session *cls_session,
 132                              struct iscsi_cls_conn *cls_conn,
 133                              uint64_t transport_fd, int is_leading);
 134 static void qla4xxx_conn_destroy(struct iscsi_cls_conn *conn);
 135 static struct iscsi_cls_session *
 136 qla4xxx_session_create(struct iscsi_endpoint *ep, uint16_t cmds_max,
 137                         uint16_t qdepth, uint32_t initial_cmdsn);
 138 static void qla4xxx_session_destroy(struct iscsi_cls_session *sess);
 139 static void qla4xxx_task_work(struct work_struct *wdata);
 140 static int qla4xxx_alloc_pdu(struct iscsi_task *, uint8_t);
 141 static int qla4xxx_task_xmit(struct iscsi_task *);
 142 static void qla4xxx_task_cleanup(struct iscsi_task *);
 143 static void qla4xxx_fail_session(struct iscsi_cls_session *cls_session);
 144 static void qla4xxx_conn_get_stats(struct iscsi_cls_conn *cls_conn,
 145                                    struct iscsi_stats *stats);
 146 static int qla4xxx_send_ping(struct Scsi_Host *shost, uint32_t iface_num,
 147                              uint32_t iface_type, uint32_t payload_size,
 148                              uint32_t pid, struct sockaddr *dst_addr);
 149 static int qla4xxx_get_chap_list(struct Scsi_Host *shost, uint16_t chap_tbl_idx,
 150                                  uint32_t *num_entries, char *buf);
 151 static int qla4xxx_delete_chap(struct Scsi_Host *shost, uint16_t chap_tbl_idx);
 152
 153 /*
 154  * SCSI host template entry points
 155  */
 156 static int qla4xxx_queuecommand(struct Scsi_Host *h, struct scsi_cmnd *cmd);
 157 static int qla4xxx_eh_abort(struct scsi_cmnd *cmd);
 158 static int qla4xxx_eh_device_reset(struct scsi_cmnd *cmd);
 159 static int qla4xxx_eh_target_reset(struct scsi_cmnd *cmd);
 160 static int qla4xxx_eh_host_reset(struct scsi_cmnd *cmd);
 161 static int qla4xxx_slave_alloc(struct scsi_device *device);
 162 static int qla4xxx_slave_configure(struct scsi_device *device);
 163 static void qla4xxx_slave_destroy(struct scsi_device *sdev);
 164 static umode_t qla4_attr_is_visible(int param_type, int param);
 165 static int qla4xxx_host_reset(struct Scsi_Host *shost, int reset_type);
 166 static int qla4xxx_change_queue_depth(struct scsi_device *sdev, int qdepth,
 167                                       int reason);
 168
 169 /*
 170  * iSCSI Flash DDB sysfs entry points
 171  */
 172 static int
 173 qla4xxx_sysfs_ddb_set_param(struct iscsi_bus_flash_session *fnode_sess,
 174                             struct iscsi_bus_flash_conn *fnode_conn,
 175                             void *data, int len);
 176 static int
 177 qla4xxx_sysfs_ddb_get_param(struct iscsi_bus_flash_session *fnode_sess,
 178                             int param, char *buf);
 179 static int qla4xxx_sysfs_ddb_add(struct Scsi_Host *shost, const char *buf,
 180                                  int len);
 181 static int
 182 qla4xxx_sysfs_ddb_delete(struct iscsi_bus_flash_session *fnode_sess);
 183 static int qla4xxx_sysfs_ddb_login(struct iscsi_bus_flash_session *fnode_sess,
 184                                    struct iscsi_bus_flash_conn *fnode_conn);
 185 static int qla4xxx_sysfs_ddb_logout(struct iscsi_bus_flash_session *fnode_sess,
 186                                     struct iscsi_bus_flash_conn *fnode_conn);
 187 static int qla4xxx_sysfs_ddb_logout_sid(struct iscsi_cls_session *cls_sess);
 188
 189 static struct qla4_8xxx_legacy_intr_set legacy_intr[] =
 190     QLA82XX_LEGACY_INTR_CONFIG;
 191
 192 static struct scsi_host_template qla4xxx_driver_template = {
 193         .module                 = THIS_MODULE,
 194         .name                   = DRIVER_NAME,
 195         .proc_name              = DRIVER_NAME,
 196         .queuecommand           = qla4xxx_queuecommand,
 197
 198         .eh_abort_handler       = qla4xxx_eh_abort,
 199         .eh_device_reset_handler = qla4xxx_eh_device_reset,
 200         .eh_target_reset_handler = qla4xxx_eh_target_reset,
 201         .eh_host_reset_handler  = qla4xxx_eh_host_reset,
 202         .eh_timed_out           = qla4xxx_eh_cmd_timed_out,
 203
 204         .slave_configure        = qla4xxx_slave_configure,
 205         .slave_alloc            = qla4xxx_slave_alloc,
 206         .slave_destroy          = qla4xxx_slave_destroy,
 207         .change_queue_depth     = qla4xxx_change_queue_depth,
 208
 209         .this_id                = -1,
 210         .cmd_per_lun            = 3,
 211         .use_clustering         = ENABLE_CLUSTERING,
 212         .sg_tablesize           = SG_ALL,
 213
 214         .max_sectors            = 0xFFFF,
 215         .shost_attrs            = qla4xxx_host_attrs,
 216         .host_reset             = qla4xxx_host_reset,
 217         .vendor_id              = SCSI_NL_VID_TYPE_PCI | PCI_VENDOR_ID_QLOGIC,
 218 };
 219
 220 static struct iscsi_transport qla4xxx_iscsi_transport = {
 221         .owner                  = THIS_MODULE,
 222         .name                   = DRIVER_NAME,
 223         .caps                   = CAP_TEXT_NEGO |
 224                                   CAP_DATA_PATH_OFFLOAD | CAP_HDRDGST |
 225                                   CAP_DATADGST | CAP_LOGIN_OFFLOAD |
 226                                   CAP_MULTI_R2T,
 227         .attr_is_visible        = qla4_attr_is_visible,
 228         .create_session         = qla4xxx_session_create,
 229         .destroy_session        = qla4xxx_session_destroy,
 230         .start_conn             = qla4xxx_conn_start,
 231         .create_conn            = qla4xxx_conn_create,
 232         .bind_conn              = qla4xxx_conn_bind,
 233         .stop_conn              = iscsi_conn_stop,
 234         .destroy_conn           = qla4xxx_conn_destroy,
 235         .set_param              = iscsi_set_param,
 236         .get_conn_param         = qla4xxx_conn_get_param,
 237         .get_session_param      = qla4xxx_session_get_param,
 238         .get_ep_param           = qla4xxx_get_ep_param,
 239         .ep_connect             = qla4xxx_ep_connect,
 240         .ep_poll                = qla4xxx_ep_poll,
 241         .ep_disconnect          = qla4xxx_ep_disconnect,
 242         .get_stats              = qla4xxx_conn_get_stats,
 243         .send_pdu               = iscsi_conn_send_pdu,
 244         .xmit_task              = qla4xxx_task_xmit,
 245         .cleanup_task           = qla4xxx_task_cleanup,
 246         .alloc_pdu              = qla4xxx_alloc_pdu,
 247
 248         .get_host_param         = qla4xxx_host_get_param,
 249         .set_iface_param        = qla4xxx_iface_set_param,
 250         .get_iface_param        = qla4xxx_get_iface_param,
 251         .bsg_request            = qla4xxx_bsg_request,
 252         .send_ping              = qla4xxx_send_ping,
 253         .get_chap               = qla4xxx_get_chap_list,
 254         .delete_chap            = qla4xxx_delete_chap,
 255         .get_flashnode_param    = qla4xxx_sysfs_ddb_get_param,
 256         .set_flashnode_param    = qla4xxx_sysfs_ddb_set_param,
 257         .new_flashnode          = qla4xxx_sysfs_ddb_add,
 258         .del_flashnode          = qla4xxx_sysfs_ddb_delete,
 259         .login_flashnode        = qla4xxx_sysfs_ddb_login,
 260         .logout_flashnode       = qla4xxx_sysfs_ddb_logout,
 261         .logout_flashnode_sid   = qla4xxx_sysfs_ddb_logout_sid,
 262 };
 263
 264 static struct scsi_transport_template *qla4xxx_scsi_transport;
 265
 266 static int qla4xxx_send_ping(struct Scsi_Host *shost, uint32_t iface_num,
 267                              uint32_t iface_type, uint32_t payload_size,
 268                              uint32_t pid, struct sockaddr *dst_addr)
 269 {
 270         struct scsi_qla_host *ha = to_qla_host(shost);
 271         struct sockaddr_in *addr;
 272         struct sockaddr_in6 *addr6;
 273         uint32_t options = 0;
 274         uint8_t ipaddr[IPv6_ADDR_LEN];
 275         int rval;
 276
 277         memset(ipaddr, 0, IPv6_ADDR_LEN);
 278         /* IPv4 to IPv4 */
 279         if ((iface_type == ISCSI_IFACE_TYPE_IPV4) &&
 280             (dst_addr->sa_family == AF_INET)) {
 281                 addr = (struct sockaddr_in *)dst_addr;
 282                 memcpy(ipaddr, &addr->sin_addr.s_addr, IP_ADDR_LEN);
 283                 DEBUG2(ql4_printk(KERN_INFO, ha, "%s: IPv4 Ping src: %pI4 "
 284                                   "dest: %pI4\n", __func__,
 285                                   &ha->ip_config.ip_address, ipaddr));
 286                 rval = qla4xxx_ping_iocb(ha, options, payload_size, pid,
 287                                          ipaddr);
 288                 if (rval)
 289                         rval = -EINVAL;
 290         } else if ((iface_type == ISCSI_IFACE_TYPE_IPV6) &&
 291                    (dst_addr->sa_family == AF_INET6)) {
 292                 /* IPv6 to IPv6 */
 293                 addr6 = (struct sockaddr_in6 *)dst_addr;
 294                 memcpy(ipaddr, &addr6->sin6_addr.in6_u.u6_addr8, IPv6_ADDR_LEN);
 295
 296                 options |= PING_IPV6_PROTOCOL_ENABLE;
 297
 298                 /* Ping using LinkLocal address */
 299                 if ((iface_num == 0) || (iface_num == 1)) {
 300                         DEBUG2(ql4_printk(KERN_INFO, ha, "%s: LinkLocal Ping "
 301                                           "src: %pI6 dest: %pI6\n", __func__,
 302                                           &ha->ip_config.ipv6_link_local_addr,
 303                                           ipaddr));
 304                         options |= PING_IPV6_LINKLOCAL_ADDR;
 305                         rval = qla4xxx_ping_iocb(ha, options, payload_size,
 306                                                  pid, ipaddr);
 307                 } else {
 308                         ql4_printk(KERN_WARNING, ha, "%s: iface num = %d "
 309                                    "not supported\n", __func__, iface_num);
 310                         rval = -ENOSYS;
 311                         goto exit_send_ping;
 312                 }
 313
 314                 /*
 315                  * If ping using LinkLocal address fails, try ping using
 316                  * IPv6 address
 317                  */
 318                 if (rval != QLA_SUCCESS) {
 319                         options &= ~PING_IPV6_LINKLOCAL_ADDR;
 320                         if (iface_num == 0) {
 321                                 options |= PING_IPV6_ADDR0;
 322                                 DEBUG2(ql4_printk(KERN_INFO, ha, "%s: IPv6 "
 323                                                   "Ping src: %pI6 "
 324                                                   "dest: %pI6\n", __func__,
 325                                                   &ha->ip_config.ipv6_addr0,
 326                                                   ipaddr));
 327                         } else if (iface_num == 1) {
 328                                 options |= PING_IPV6_ADDR1;
 329                                 DEBUG2(ql4_printk(KERN_INFO, ha, "%s: IPv6 "
 330                                                   "Ping src: %pI6 "
 331                                                   "dest: %pI6\n", __func__,
 332                                                   &ha->ip_config.ipv6_addr1,
 333                                                   ipaddr));
 334                         }
 335                         rval = qla4xxx_ping_iocb(ha, options, payload_size,
 336                                                  pid, ipaddr);
 337                         if (rval)
 338                                 rval = -EINVAL;
 339                 }
 340         } else
 341                 rval = -ENOSYS;
 342 exit_send_ping:
 343         return rval;
 344 }
 345
 346 static umode_t qla4_attr_is_visible(int param_type, int param)
 347 {
 348         switch (param_type) {
 349         case ISCSI_HOST_PARAM:
 350                 switch (param) {
 351                 case ISCSI_HOST_PARAM_HWADDRESS:
 352                 case ISCSI_HOST_PARAM_IPADDRESS:
 353                 case ISCSI_HOST_PARAM_INITIATOR_NAME:
 354                 case ISCSI_HOST_PARAM_PORT_STATE:
 355                 case ISCSI_HOST_PARAM_PORT_SPEED:
 356                         return S_IRUGO;
 357                 default:
 358                         return 0;
 359                 }
 360         case ISCSI_PARAM:
 361                 switch (param) {
 362                 case ISCSI_PARAM_PERSISTENT_ADDRESS:
 363                 case ISCSI_PARAM_PERSISTENT_PORT:
 364                 case ISCSI_PARAM_CONN_ADDRESS:
 365                 case ISCSI_PARAM_CONN_PORT:
 366                 case ISCSI_PARAM_TARGET_NAME:
 367                 case ISCSI_PARAM_TPGT:
 368                 case ISCSI_PARAM_TARGET_ALIAS:
 369                 case ISCSI_PARAM_MAX_BURST:
 370                 case ISCSI_PARAM_MAX_R2T:
 371                 case ISCSI_PARAM_FIRST_BURST:
 372                 case ISCSI_PARAM_MAX_RECV_DLENGTH:
 373                 case ISCSI_PARAM_MAX_XMIT_DLENGTH:
 374                 case ISCSI_PARAM_IFACE_NAME:
 375                 case ISCSI_PARAM_CHAP_OUT_IDX:
 376                 case ISCSI_PARAM_CHAP_IN_IDX:
 377                 case ISCSI_PARAM_USERNAME:
 378                 case ISCSI_PARAM_PASSWORD:
 379                 case ISCSI_PARAM_USERNAME_IN:
 380                 case ISCSI_PARAM_PASSWORD_IN:
 381                         return S_IRUGO;
 382                 default:
 383                         return 0;
 384                 }
 385         case ISCSI_NET_PARAM:
 386                 switch (param) {
 387                 case ISCSI_NET_PARAM_IPV4_ADDR:
 388                 case ISCSI_NET_PARAM_IPV4_SUBNET:
 389                 case ISCSI_NET_PARAM_IPV4_GW:
 390                 case ISCSI_NET_PARAM_IPV4_BOOTPROTO:
 391                 case ISCSI_NET_PARAM_IFACE_ENABLE:
 392                 case ISCSI_NET_PARAM_IPV6_LINKLOCAL:
 393                 case ISCSI_NET_PARAM_IPV6_ADDR:
 394                 case ISCSI_NET_PARAM_IPV6_ROUTER:
 395                 case ISCSI_NET_PARAM_IPV6_ADDR_AUTOCFG:
 396                 case ISCSI_NET_PARAM_IPV6_LINKLOCAL_AUTOCFG:
 397                 case ISCSI_NET_PARAM_VLAN_ID:
 398                 case ISCSI_NET_PARAM_VLAN_PRIORITY:
 399                 case ISCSI_NET_PARAM_VLAN_ENABLED:
 400                 case ISCSI_NET_PARAM_MTU:
 401                 case ISCSI_NET_PARAM_PORT:
 402                         return S_IRUGO;
 403                 default:
 404                         return 0;
 405                 }
 406         case ISCSI_FLASHNODE_PARAM:
 407                 switch (param) {
 408                 case ISCSI_FLASHNODE_IS_FW_ASSIGNED_IPV6:
 409                 case ISCSI_FLASHNODE_PORTAL_TYPE:
 410                 case ISCSI_FLASHNODE_AUTO_SND_TGT_DISABLE:
 411                 case ISCSI_FLASHNODE_DISCOVERY_SESS:
 412                 case ISCSI_FLASHNODE_ENTRY_EN:
 413                 case ISCSI_FLASHNODE_HDR_DGST_EN:
 414                 case ISCSI_FLASHNODE_DATA_DGST_EN:
 415                 case ISCSI_FLASHNODE_IMM_DATA_EN:
 416                 case ISCSI_FLASHNODE_INITIAL_R2T_EN:
 417                 case ISCSI_FLASHNODE_DATASEQ_INORDER:
 418                 case ISCSI_FLASHNODE_PDU_INORDER:
 419                 case ISCSI_FLASHNODE_CHAP_AUTH_EN:
 420                 case ISCSI_FLASHNODE_SNACK_REQ_EN:
 421                 case ISCSI_FLASHNODE_DISCOVERY_LOGOUT_EN:
 422                 case ISCSI_FLASHNODE_BIDI_CHAP_EN:
 423                 case ISCSI_FLASHNODE_DISCOVERY_AUTH_OPTIONAL:
 424                 case ISCSI_FLASHNODE_ERL:
 425                 case ISCSI_FLASHNODE_TCP_TIMESTAMP_STAT:
 426                 case ISCSI_FLASHNODE_TCP_NAGLE_DISABLE:
 427                 case ISCSI_FLASHNODE_TCP_WSF_DISABLE:
 428                 case ISCSI_FLASHNODE_TCP_TIMER_SCALE:
 429                 case ISCSI_FLASHNODE_TCP_TIMESTAMP_EN:
 430                 case ISCSI_FLASHNODE_IP_FRAG_DISABLE:
 431                 case ISCSI_FLASHNODE_MAX_RECV_DLENGTH:
 432                 case ISCSI_FLASHNODE_MAX_XMIT_DLENGTH:
 433                 case ISCSI_FLASHNODE_FIRST_BURST:
 434                 case ISCSI_FLASHNODE_DEF_TIME2WAIT:
 435                 case ISCSI_FLASHNODE_DEF_TIME2RETAIN:
 436                 case ISCSI_FLASHNODE_MAX_R2T:
 437                 case ISCSI_FLASHNODE_KEEPALIVE_TMO:
 438                 case ISCSI_FLASHNODE_ISID:
 439                 case ISCSI_FLASHNODE_TSID:
 440                 case ISCSI_FLASHNODE_PORT:
 441                 case ISCSI_FLASHNODE_MAX_BURST:
 442                 case ISCSI_FLASHNODE_DEF_TASKMGMT_TMO:
 443                 case ISCSI_FLASHNODE_IPADDR:
 444                 case ISCSI_FLASHNODE_ALIAS:
 445                 case ISCSI_FLASHNODE_REDIRECT_IPADDR:
 446                 case ISCSI_FLASHNODE_MAX_SEGMENT_SIZE:
 447                 case ISCSI_FLASHNODE_LOCAL_PORT:
 448                 case ISCSI_FLASHNODE_IPV4_TOS:
 449                 case ISCSI_FLASHNODE_IPV6_TC:
 450                 case ISCSI_FLASHNODE_IPV6_FLOW_LABEL:
 451                 case ISCSI_FLASHNODE_NAME:
 452                 case ISCSI_FLASHNODE_TPGT:
 453                 case ISCSI_FLASHNODE_LINK_LOCAL_IPV6:
 454                 case ISCSI_FLASHNODE_DISCOVERY_PARENT_IDX:
 455                 case ISCSI_FLASHNODE_DISCOVERY_PARENT_TYPE:
 456                 case ISCSI_FLASHNODE_TCP_XMIT_WSF:
 457                 case ISCSI_FLASHNODE_TCP_RECV_WSF:
 458                 case ISCSI_FLASHNODE_CHAP_OUT_IDX:
 459                 case ISCSI_FLASHNODE_USERNAME:
 460                 case ISCSI_FLASHNODE_PASSWORD:
 461                 case ISCSI_FLASHNODE_STATSN:
 462                 case ISCSI_FLASHNODE_EXP_STATSN:
 463                 case ISCSI_FLASHNODE_IS_BOOT_TGT:
 464                         return S_IRUGO;
 465                 default:
 466                         return 0;
 467                 }
 468         }
 469
 470         return 0;
 471 }
 472
 473 static int qla4xxx_get_chap_list(struct Scsi_Host *shost, uint16_t chap_tbl_idx,
 474                                   uint32_t *num_entries, char *buf)
 475 {
 476         struct scsi_qla_host *ha = to_qla_host(shost);
 477         struct ql4_chap_table *chap_table;
 478         struct iscsi_chap_rec *chap_rec;
 479         int max_chap_entries = 0;
 480         int valid_chap_entries = 0;
 481         int ret = 0, i;
 482
 483         if (is_qla80XX(ha))
 484                 max_chap_entries = (ha->hw.flt_chap_size / 2) /
 485                                         sizeof(struct ql4_chap_table);
 486         else
 487                 max_chap_entries = MAX_CHAP_ENTRIES_40XX;
 488
 489         ql4_printk(KERN_INFO, ha, "%s: num_entries = %d, CHAP idx = %d\n",
 490                         __func__, *num_entries, chap_tbl_idx);
 491
 492         if (!buf) {
 493                 ret = -ENOMEM;
 494                 goto exit_get_chap_list;
 495         }
 496
 497         chap_rec = (struct iscsi_chap_rec *) buf;
 498         mutex_lock(&ha->chap_sem);
 499         for (i = chap_tbl_idx; i < max_chap_entries; i++) {
 500                 chap_table = (struct ql4_chap_table *)ha->chap_list + i;
 501                 if (chap_table->cookie !=
 502                     __constant_cpu_to_le16(CHAP_VALID_COOKIE))
 503                         continue;
 504
 505                 chap_rec->chap_tbl_idx = i;
 506                 strncpy(chap_rec->username, chap_table->name,
 507                         ISCSI_CHAP_AUTH_NAME_MAX_LEN);
 508                 strncpy(chap_rec->password, chap_table->secret,
 509                         QL4_CHAP_MAX_SECRET_LEN);
 510                 chap_rec->password_length = chap_table->secret_len;
 511
 512                 if (chap_table->flags & BIT_7) /* local */
 513                         chap_rec->chap_type = CHAP_TYPE_OUT;
 514
 515                 if (chap_table->flags & BIT_6) /* peer */
 516                         chap_rec->chap_type = CHAP_TYPE_IN;
 517
 518                 chap_rec++;
 519
 520                 valid_chap_entries++;
 521                 if (valid_chap_entries == *num_entries)
 522                         break;
 523                 else
 524                         continue;
 525         }
 526         mutex_unlock(&ha->chap_sem);
 527
 528 exit_get_chap_list:
 529         ql4_printk(KERN_INFO, ha, "%s: Valid CHAP Entries = %d\n",
 530                         __func__,  valid_chap_entries);
 531         *num_entries = valid_chap_entries;
 532         return ret;
 533 }
 534
 535 static int __qla4xxx_is_chap_active(struct device *dev, void *data)
 536 {
 537         int ret = 0;
 538         uint16_t *chap_tbl_idx = (uint16_t *) data;
 539         struct iscsi_cls_session *cls_session;
 540         struct iscsi_session *sess;
 541         struct ddb_entry *ddb_entry;
 542
 543         if (!iscsi_is_session_dev(dev))
 544                 goto exit_is_chap_active;
 545
 546         cls_session = iscsi_dev_to_session(dev);
 547         sess = cls_session->dd_data;
 548         ddb_entry = sess->dd_data;
 549
 550         if (iscsi_session_chkready(cls_session))
 551                 goto exit_is_chap_active;
 552
 553         if (ddb_entry->chap_tbl_idx == *chap_tbl_idx)
 554                 ret = 1;
 555
 556 exit_is_chap_active:
 557         return ret;
 558 }
 559
 560 static int qla4xxx_is_chap_active(struct Scsi_Host *shost,
 561                                   uint16_t chap_tbl_idx)
 562 {
 563         int ret = 0;
 564
 565         ret = device_for_each_child(&shost->shost_gendev, &chap_tbl_idx,
 566                                     __qla4xxx_is_chap_active);
 567
 568         return ret;
 569 }
 570
 571 static int qla4xxx_delete_chap(struct Scsi_Host *shost, uint16_t chap_tbl_idx)
 572 {
 573         struct scsi_qla_host *ha = to_qla_host(shost);
 574         struct ql4_chap_table *chap_table;
 575         dma_addr_t chap_dma;
 576         int max_chap_entries = 0;
 577         uint32_t offset = 0;
 578         uint32_t chap_size;
 579         int ret = 0;
 580
 581         chap_table = dma_pool_alloc(ha->chap_dma_pool, GFP_KERNEL, &chap_dma);
 582         if (chap_table == NULL)
 583                 return -ENOMEM;
 584
 585         memset(chap_table, 0, sizeof(struct ql4_chap_table));
 586
 587         if (is_qla80XX(ha))
 588                 max_chap_entries = (ha->hw.flt_chap_size / 2) /
 589                                    sizeof(struct ql4_chap_table);
 590         else
 591                 max_chap_entries = MAX_CHAP_ENTRIES_40XX;
 592
 593         if (chap_tbl_idx > max_chap_entries) {
 594                 ret = -EINVAL;
 595                 goto exit_delete_chap;
 596         }
 597
 598         /* Check if chap index is in use.
 599          * If chap is in use don't delet chap entry */
 600         ret = qla4xxx_is_chap_active(shost, chap_tbl_idx);
 601         if (ret) {
 602                 ql4_printk(KERN_INFO, ha, "CHAP entry %d is in use, cannot "
 603                            "delete from flash\n", chap_tbl_idx);
 604                 ret = -EBUSY;
 605                 goto exit_delete_chap;
 606         }
 607
 608         chap_size = sizeof(struct ql4_chap_table);
 609         if (is_qla40XX(ha))
 610                 offset = FLASH_CHAP_OFFSET | (chap_tbl_idx * chap_size);
 611         else {
 612                 offset = FLASH_RAW_ACCESS_ADDR + (ha->hw.flt_region_chap << 2);
 613                 /* flt_chap_size is CHAP table size for both ports
 614                  * so divide it by 2 to calculate the offset for second port
 615                  */
 616                 if (ha->port_num == 1)
 617                         offset += (ha->hw.flt_chap_size / 2);
 618                 offset += (chap_tbl_idx * chap_size);
 619         }
 620
 621         ret = qla4xxx_get_flash(ha, chap_dma, offset, chap_size);
 622         if (ret != QLA_SUCCESS) {
 623                 ret = -EINVAL;
 624                 goto exit_delete_chap;
 625         }
 626
 627         DEBUG2(ql4_printk(KERN_INFO, ha, "Chap Cookie: x%x\n",
 628                           __le16_to_cpu(chap_table->cookie)));
 629
 630         if (__le16_to_cpu(chap_table->cookie) != CHAP_VALID_COOKIE) {
 631                 ql4_printk(KERN_ERR, ha, "No valid chap entry found\n");
 632                 goto exit_delete_chap;
 633         }
 634
 635         chap_table->cookie = __constant_cpu_to_le16(0xFFFF);
 636
 637         offset = FLASH_CHAP_OFFSET |
 638                         (chap_tbl_idx * sizeof(struct ql4_chap_table));
 639         ret = qla4xxx_set_flash(ha, chap_dma, offset, chap_size,
 640                                 FLASH_OPT_RMW_COMMIT);
 641         if (ret == QLA_SUCCESS && ha->chap_list) {
 642                 mutex_lock(&ha->chap_sem);
 643                 /* Update ha chap_list cache */
 644                 memcpy((struct ql4_chap_table *)ha->chap_list + chap_tbl_idx,
 645                         chap_table, sizeof(struct ql4_chap_table));
 646                 mutex_unlock(&ha->chap_sem);
 647         }
 648         if (ret != QLA_SUCCESS)
 649                 ret =  -EINVAL;
 650
 651 exit_delete_chap:
 652         dma_pool_free(ha->chap_dma_pool, chap_table, chap_dma);
 653         return ret;
 654 }
 655
 656 static int qla4xxx_get_iface_param(struct iscsi_iface *iface,
 657                                    enum iscsi_param_type param_type,
 658                                    int param, char *buf)
 659 {
 660         struct Scsi_Host *shost = iscsi_iface_to_shost(iface);
 661         struct scsi_qla_host *ha = to_qla_host(shost);
 662         int len = -ENOSYS;
 663
 664         if (param_type != ISCSI_NET_PARAM)
 665                 return -ENOSYS;
 666
 667         switch (param) {
 668         case ISCSI_NET_PARAM_IPV4_ADDR:
 669                 len = sprintf(buf, "%pI4\n", &ha->ip_config.ip_address);
 670                 break;
 671         case ISCSI_NET_PARAM_IPV4_SUBNET:
 672                 len = sprintf(buf, "%pI4\n", &ha->ip_config.subnet_mask);
 673                 break;
 674         case ISCSI_NET_PARAM_IPV4_GW:
 675                 len = sprintf(buf, "%pI4\n", &ha->ip_config.gateway);
 676                 break;
 677         case ISCSI_NET_PARAM_IFACE_ENABLE:
 678                 if (iface->iface_type == ISCSI_IFACE_TYPE_IPV4)
 679                         len = sprintf(buf, "%s\n",
 680                                       (ha->ip_config.ipv4_options &
 681                                        IPOPT_IPV4_PROTOCOL_ENABLE) ?
 682                                       "enabled" : "disabled");
 683                 else if (iface->iface_type == ISCSI_IFACE_TYPE_IPV6)
 684                         len = sprintf(buf, "%s\n",
 685                                       (ha->ip_config.ipv6_options &
 686                                        IPV6_OPT_IPV6_PROTOCOL_ENABLE) ?
 687                                        "enabled" : "disabled");
 688                 break;
 689         case ISCSI_NET_PARAM_IPV4_BOOTPROTO:
 690                 len = sprintf(buf, "%s\n",
 691                               (ha->ip_config.tcp_options & TCPOPT_DHCP_ENABLE) ?
 692                               "dhcp" : "static");
 693                 break;
 694         case ISCSI_NET_PARAM_IPV6_ADDR:
 695                 if (iface->iface_num == 0)
 696                         len = sprintf(buf, "%pI6\n", &ha->ip_config.ipv6_addr0);
 697                 if (iface->iface_num == 1)
 698                         len = sprintf(buf, "%pI6\n", &ha->ip_config.ipv6_addr1);
 699                 break;
 700         case ISCSI_NET_PARAM_IPV6_LINKLOCAL:
 701                 len = sprintf(buf, "%pI6\n",
 702                               &ha->ip_config.ipv6_link_local_addr);
 703                 break;
 704         case ISCSI_NET_PARAM_IPV6_ROUTER:
 705                 len = sprintf(buf, "%pI6\n",
 706                               &ha->ip_config.ipv6_default_router_addr);
 707                 break;
 708         case ISCSI_NET_PARAM_IPV6_ADDR_AUTOCFG:
 709                 len = sprintf(buf, "%s\n",
 710                               (ha->ip_config.ipv6_addl_options &
 711                                IPV6_ADDOPT_NEIGHBOR_DISCOVERY_ADDR_ENABLE) ?
 712                                "nd" : "static");
 713                 break;
 714         case ISCSI_NET_PARAM_IPV6_LINKLOCAL_AUTOCFG:
 715                 len = sprintf(buf, "%s\n",
 716                               (ha->ip_config.ipv6_addl_options &
 717                                IPV6_ADDOPT_AUTOCONFIG_LINK_LOCAL_ADDR) ?
 718                                "auto" : "static");
 719                 break;
 720         case ISCSI_NET_PARAM_VLAN_ID:
 721                 if (iface->iface_type == ISCSI_IFACE_TYPE_IPV4)
 722                         len = sprintf(buf, "%d\n",
 723                                       (ha->ip_config.ipv4_vlan_tag &
 724                                        ISCSI_MAX_VLAN_ID));
 725                 else if (iface->iface_type == ISCSI_IFACE_TYPE_IPV6)
 726                         len = sprintf(buf, "%d\n",
 727                                       (ha->ip_config.ipv6_vlan_tag &
 728                                        ISCSI_MAX_VLAN_ID));
 729                 break;
 730         case ISCSI_NET_PARAM_VLAN_PRIORITY:
 731                 if (iface->iface_type == ISCSI_IFACE_TYPE_IPV4)
 732                         len = sprintf(buf, "%d\n",
 733                                       ((ha->ip_config.ipv4_vlan_tag >> 13) &
 734                                         ISCSI_MAX_VLAN_PRIORITY));
 735                 else if (iface->iface_type == ISCSI_IFACE_TYPE_IPV6)
 736                         len = sprintf(buf, "%d\n",
 737                                       ((ha->ip_config.ipv6_vlan_tag >> 13) &
 738                                         ISCSI_MAX_VLAN_PRIORITY));
 739                 break;
 740         case ISCSI_NET_PARAM_VLAN_ENABLED:
 741                 if (iface->iface_type == ISCSI_IFACE_TYPE_IPV4)
 742                         len = sprintf(buf, "%s\n",
 743                                       (ha->ip_config.ipv4_options &
 744                                        IPOPT_VLAN_TAGGING_ENABLE) ?
 745                                        "enabled" : "disabled");
 746                 else if (iface->iface_type == ISCSI_IFACE_TYPE_IPV6)
 747                         len = sprintf(buf, "%s\n",
 748                                       (ha->ip_config.ipv6_options &
 749                                        IPV6_OPT_VLAN_TAGGING_ENABLE) ?
 750                                        "enabled" : "disabled");
 751                 break;
 752         case ISCSI_NET_PARAM_MTU:
 753                 len = sprintf(buf, "%d\n", ha->ip_config.eth_mtu_size);
 754                 break;
 755         case ISCSI_NET_PARAM_PORT:
 756                 if (iface->iface_type == ISCSI_IFACE_TYPE_IPV4)
 757                         len = sprintf(buf, "%d\n", ha->ip_config.ipv4_port);
 758                 else if (iface->iface_type == ISCSI_IFACE_TYPE_IPV6)
 759                         len = sprintf(buf, "%d\n", ha->ip_config.ipv6_port);
 760                 break;
 761         default:
 762                 len = -ENOSYS;
 763         }
 764
 765         return len;
 766 }
 767
 768 static struct iscsi_endpoint *
 769 qla4xxx_ep_connect(struct Scsi_Host *shost, struct sockaddr *dst_addr,
 770                    int non_blocking)
 771 {
 772         int ret;
 773         struct iscsi_endpoint *ep;
 774         struct qla_endpoint *qla_ep;
 775         struct scsi_qla_host *ha;
 776         struct sockaddr_in *addr;
 777         struct sockaddr_in6 *addr6;
 778
 779         DEBUG2(printk(KERN_INFO "Func: %s\n", __func__));
 780         if (!shost) {
 781                 ret = -ENXIO;
 782                 printk(KERN_ERR "%s: shost is NULL\n",
 783                        __func__);
 784                 return ERR_PTR(ret);
 785         }
 786
 787         ha = iscsi_host_priv(shost);
 788
 789         ep = iscsi_create_endpoint(sizeof(struct qla_endpoint));
 790         if (!ep) {
 791                 ret = -ENOMEM;
 792                 return ERR_PTR(ret);
 793         }
 794
 795         qla_ep = ep->dd_data;
 796         memset(qla_ep, 0, sizeof(struct qla_endpoint));
 797         if (dst_addr->sa_family == AF_INET) {
 798                 memcpy(&qla_ep->dst_addr, dst_addr, sizeof(struct sockaddr_in));
 799                 addr = (struct sockaddr_in *)&qla_ep->dst_addr;
 800                 DEBUG2(ql4_printk(KERN_INFO, ha, "%s: %pI4\n", __func__,
 801                                   (char *)&addr->sin_addr));
 802         } else if (dst_addr->sa_family == AF_INET6) {
 803                 memcpy(&qla_ep->dst_addr, dst_addr,
 804                        sizeof(struct sockaddr_in6));
 805                 addr6 = (struct sockaddr_in6 *)&qla_ep->dst_addr;
 806                 DEBUG2(ql4_printk(KERN_INFO, ha, "%s: %pI6\n", __func__,
 807                                   (char *)&addr6->sin6_addr));
 808         }
 809
 810         qla_ep->host = shost;
 811
 812         return ep;
 813 }
 814
 815 static int qla4xxx_ep_poll(struct iscsi_endpoint *ep, int timeout_ms)
 816 {
 817         struct qla_endpoint *qla_ep;
 818         struct scsi_qla_host *ha;
 819         int ret = 0;
 820
 821         DEBUG2(printk(KERN_INFO "Func: %s\n", __func__));
 822         qla_ep = ep->dd_data;
 823         ha = to_qla_host(qla_ep->host);
 824
 825         if (adapter_up(ha) && !test_bit(AF_BUILD_DDB_LIST, &ha->flags))
 826                 ret = 1;
 827
 828         return ret;
 829 }
 830
 831 static void qla4xxx_ep_disconnect(struct iscsi_endpoint *ep)
 832 {
 833         DEBUG2(printk(KERN_INFO "Func: %s\n", __func__));
 834         iscsi_destroy_endpoint(ep);
 835 }
 836
 837 static int qla4xxx_get_ep_param(struct iscsi_endpoint *ep,
 838                                 enum iscsi_param param,
 839                                 char *buf)
 840 {
 841         struct qla_endpoint *qla_ep = ep->dd_data;
 842         struct sockaddr *dst_addr;
 843
 844         DEBUG2(printk(KERN_INFO "Func: %s\n", __func__));
 845
 846         switch (param) {
 847         case ISCSI_PARAM_CONN_PORT:
 848         case ISCSI_PARAM_CONN_ADDRESS:
 849                 if (!qla_ep)
 850                         return -ENOTCONN;
 851
 852                 dst_addr = (struct sockaddr *)&qla_ep->dst_addr;
 853                 if (!dst_addr)
 854                         return -ENOTCONN;
 855
 856                 return iscsi_conn_get_addr_param((struct sockaddr_storage *)
 857                                                  &qla_ep->dst_addr, param, buf);
 858         default:
 859                 return -ENOSYS;
 860         }
 861 }
 862
 863 static void qla4xxx_conn_get_stats(struct iscsi_cls_conn *cls_conn,
 864                                    struct iscsi_stats *stats)
 865 {
 866         struct iscsi_session *sess;
 867         struct iscsi_cls_session *cls_sess;
 868         struct ddb_entry *ddb_entry;
 869         struct scsi_qla_host *ha;
 870         struct ql_iscsi_stats *ql_iscsi_stats;
 871         int stats_size;
 872         int ret;
 873         dma_addr_t iscsi_stats_dma;
 874
 875         DEBUG2(printk(KERN_INFO "Func: %s\n", __func__));
 876
 877         cls_sess = iscsi_conn_to_session(cls_conn);
 878         sess = cls_sess->dd_data;
 879         ddb_entry = sess->dd_data;
 880         ha = ddb_entry->ha;
 881
 882         stats_size = PAGE_ALIGN(sizeof(struct ql_iscsi_stats));
 883         /* Allocate memory */
 884         ql_iscsi_stats = dma_alloc_coherent(&ha->pdev->dev, stats_size,
 885                                             &iscsi_stats_dma, GFP_KERNEL);
 886         if (!ql_iscsi_stats) {
 887                 ql4_printk(KERN_ERR, ha,
 888                            "Unable to allocate memory for iscsi stats\n");
 889                 goto exit_get_stats;
 890         }
 891
 892         ret =  qla4xxx_get_mgmt_data(ha, ddb_entry->fw_ddb_index, stats_size,
 893                                      iscsi_stats_dma);
 894         if (ret != QLA_SUCCESS) {
 895                 ql4_printk(KERN_ERR, ha,
 896                            "Unable to retrieve iscsi stats\n");
 897                 goto free_stats;
 898         }
 899
 900         /* octets */
 901         stats->txdata_octets = le64_to_cpu(ql_iscsi_stats->tx_data_octets);
 902         stats->rxdata_octets = le64_to_cpu(ql_iscsi_stats->rx_data_octets);
 903         /* xmit pdus */
 904         stats->noptx_pdus = le32_to_cpu(ql_iscsi_stats->tx_nopout_pdus);
 905         stats->scsicmd_pdus = le32_to_cpu(ql_iscsi_stats->tx_scsi_cmd_pdus);
 906         stats->tmfcmd_pdus = le32_to_cpu(ql_iscsi_stats->tx_tmf_cmd_pdus);
 907         stats->login_pdus = le32_to_cpu(ql_iscsi_stats->tx_login_cmd_pdus);
 908         stats->text_pdus = le32_to_cpu(ql_iscsi_stats->tx_text_cmd_pdus);
 909         stats->dataout_pdus = le32_to_cpu(ql_iscsi_stats->tx_scsi_write_pdus);
 910         stats->logout_pdus = le32_to_cpu(ql_iscsi_stats->tx_logout_cmd_pdus);
 911         stats->snack_pdus = le32_to_cpu(ql_iscsi_stats->tx_snack_req_pdus);
 912         /* recv pdus */
 913         stats->noprx_pdus = le32_to_cpu(ql_iscsi_stats->rx_nopin_pdus);
 914         stats->scsirsp_pdus = le32_to_cpu(ql_iscsi_stats->rx_scsi_resp_pdus);
 915         stats->tmfrsp_pdus = le32_to_cpu(ql_iscsi_stats->rx_tmf_resp_pdus);
 916         stats->textrsp_pdus = le32_to_cpu(ql_iscsi_stats->rx_text_resp_pdus);
 917         stats->datain_pdus = le32_to_cpu(ql_iscsi_stats->rx_scsi_read_pdus);
 918         stats->logoutrsp_pdus =
 919                         le32_to_cpu(ql_iscsi_stats->rx_logout_resp_pdus);
 920         stats->r2t_pdus = le32_to_cpu(ql_iscsi_stats->rx_r2t_pdus);
 921         stats->async_pdus = le32_to_cpu(ql_iscsi_stats->rx_async_pdus);
 922         stats->rjt_pdus = le32_to_cpu(ql_iscsi_stats->rx_reject_pdus);
 923
 924 free_stats:
 925         dma_free_coherent(&ha->pdev->dev, stats_size, ql_iscsi_stats,
 926                           iscsi_stats_dma);
 927 exit_get_stats:
 928         return;
 929 }
 930
 931 static enum blk_eh_timer_return qla4xxx_eh_cmd_timed_out(struct scsi_cmnd *sc)
 932 {
 933         struct iscsi_cls_session *session;
 934         struct iscsi_session *sess;
 935         unsigned long flags;
 936         enum blk_eh_timer_return ret = BLK_EH_NOT_HANDLED;
 937
 938         session = starget_to_session(scsi_target(sc->device));
 939         sess = session->dd_data;
 940
 941         spin_lock_irqsave(&session->lock, flags);
 942         if (session->state == ISCSI_SESSION_FAILED)
 943                 ret = BLK_EH_RESET_TIMER;
 944         spin_unlock_irqrestore(&session->lock, flags);
 945
 946         return ret;
 947 }
 948
 949 static void qla4xxx_set_port_speed(struct Scsi_Host *shost)
 950 {
 951         struct scsi_qla_host *ha = to_qla_host(shost);
 952         struct iscsi_cls_host *ihost = shost->shost_data;
 953         uint32_t speed = ISCSI_PORT_SPEED_UNKNOWN;
 954
 955         qla4xxx_get_firmware_state(ha);
 956
 957         switch (ha->addl_fw_state & 0x0F00) {
 958         case FW_ADDSTATE_LINK_SPEED_10MBPS:
 959                 speed = ISCSI_PORT_SPEED_10MBPS;
 960                 break;
 961         case FW_ADDSTATE_LINK_SPEED_100MBPS:
 962                 speed = ISCSI_PORT_SPEED_100MBPS;
 963                 break;
 964         case FW_ADDSTATE_LINK_SPEED_1GBPS:
 965                 speed = ISCSI_PORT_SPEED_1GBPS;
 966                 break;
 967         case FW_ADDSTATE_LINK_SPEED_10GBPS:
 968                 speed = ISCSI_PORT_SPEED_10GBPS;
 969                 break;
 970         }
 971         ihost->port_speed = speed;
 972 }
 973
 974 static void qla4xxx_set_port_state(struct Scsi_Host *shost)
 975 {
 976         struct scsi_qla_host *ha = to_qla_host(shost);
 977         struct iscsi_cls_host *ihost = shost->shost_data;
 978         uint32_t state = ISCSI_PORT_STATE_DOWN;
 979
 980         if (test_bit(AF_LINK_UP, &ha->flags))
 981                 state = ISCSI_PORT_STATE_UP;
 982
 983         ihost->port_state = state;
 984 }
 985
 986 static int qla4xxx_host_get_param(struct Scsi_Host *shost,
 987                                   enum iscsi_host_param param, char *buf)
 988 {
 989         struct scsi_qla_host *ha = to_qla_host(shost);
 990         int len;
 991
 992         switch (param) {
 993         case ISCSI_HOST_PARAM_HWADDRESS:
 994                 len = sysfs_format_mac(buf, ha->my_mac, MAC_ADDR_LEN);
 995                 break;
 996         case ISCSI_HOST_PARAM_IPADDRESS:
 997                 len = sprintf(buf, "%pI4\n", &ha->ip_config.ip_address);
 998                 break;
 999         case ISCSI_HOST_PARAM_INITIATOR_NAME:
1000                 len = sprintf(buf, "%s\n", ha->name_string);
1001                 break;
1002         case ISCSI_HOST_PARAM_PORT_STATE:
1003                 qla4xxx_set_port_state(shost);
1004                 len = sprintf(buf, "%s\n", iscsi_get_port_state_name(shost));
1005                 break;
1006         case ISCSI_HOST_PARAM_PORT_SPEED:
1007                 qla4xxx_set_port_speed(shost);
1008                 len = sprintf(buf, "%s\n", iscsi_get_port_speed_name(shost));
1009                 break;
1010         default:
1011                 return -ENOSYS;
1012         }
1013
1014         return len;
1015 }
1016
1017 static void qla4xxx_create_ipv4_iface(struct scsi_qla_host *ha)
1018 {
1019         if (ha->iface_ipv4)
1020                 return;
1021
1022         /* IPv4 */
1023         ha->iface_ipv4 = iscsi_create_iface(ha->host,
1024                                             &qla4xxx_iscsi_transport,
1025                                             ISCSI_IFACE_TYPE_IPV4, 0, 0);
1026         if (!ha->iface_ipv4)
1027                 ql4_printk(KERN_ERR, ha, "Could not create IPv4 iSCSI "
1028                            "iface0.\n");
1029 }
1030
1031 static void qla4xxx_create_ipv6_iface(struct scsi_qla_host *ha)
1032 {
1033         if (!ha->iface_ipv6_0)
1034                 /* IPv6 iface-0 */
1035                 ha->iface_ipv6_0 = iscsi_create_iface(ha->host,
1036                                                       &qla4xxx_iscsi_transport,
1037                                                       ISCSI_IFACE_TYPE_IPV6, 0,
1038                                                       0);
1039         if (!ha->iface_ipv6_0)
1040                 ql4_printk(KERN_ERR, ha, "Could not create IPv6 iSCSI "
1041                            "iface0.\n");
1042
1043         if (!ha->iface_ipv6_1)
1044                 /* IPv6 iface-1 */
1045                 ha->iface_ipv6_1 = iscsi_create_iface(ha->host,
1046                                                       &qla4xxx_iscsi_transport,
1047                                                       ISCSI_IFACE_TYPE_IPV6, 1,
1048                                                       0);
1049         if (!ha->iface_ipv6_1)
1050                 ql4_printk(KERN_ERR, ha, "Could not create IPv6 iSCSI "
1051                            "iface1.\n");
1052 }
1053
1054 static void qla4xxx_create_ifaces(struct scsi_qla_host *ha)
1055 {
1056         if (ha->ip_config.ipv4_options & IPOPT_IPV4_PROTOCOL_ENABLE)
1057                 qla4xxx_create_ipv4_iface(ha);
1058
1059         if (ha->ip_config.ipv6_options & IPV6_OPT_IPV6_PROTOCOL_ENABLE)
1060                 qla4xxx_create_ipv6_iface(ha);
1061 }
1062
1063 static void qla4xxx_destroy_ipv4_iface(struct scsi_qla_host *ha)
1064 {
1065         if (ha->iface_ipv4) {
1066                 iscsi_destroy_iface(ha->iface_ipv4);
1067                 ha->iface_ipv4 = NULL;
1068         }
1069 }
1070
1071 static void qla4xxx_destroy_ipv6_iface(struct scsi_qla_host *ha)
1072 {
1073         if (ha->iface_ipv6_0) {
1074                 iscsi_destroy_iface(ha->iface_ipv6_0);
1075                 ha->iface_ipv6_0 = NULL;
1076         }
1077         if (ha->iface_ipv6_1) {
1078                 iscsi_destroy_iface(ha->iface_ipv6_1);
1079                 ha->iface_ipv6_1 = NULL;
1080         }
1081 }
1082
1083 static void qla4xxx_destroy_ifaces(struct scsi_qla_host *ha)
1084 {
1085         qla4xxx_destroy_ipv4_iface(ha);
1086         qla4xxx_destroy_ipv6_iface(ha);
1087 }
1088
1089 static void qla4xxx_set_ipv6(struct scsi_qla_host *ha,
1090                              struct iscsi_iface_param_info *iface_param,
1091                              struct addr_ctrl_blk *init_fw_cb)
1092 {
1093         /*
1094          * iface_num 0 is valid for IPv6 Addr, linklocal, router, autocfg.
1095          * iface_num 1 is valid only for IPv6 Addr.
1096          */
1097         switch (iface_param->param) {
1098         case ISCSI_NET_PARAM_IPV6_ADDR:
1099                 if (iface_param->iface_num & 0x1)
1100                         /* IPv6 Addr 1 */
1101                         memcpy(init_fw_cb->ipv6_addr1, iface_param->value,
1102                                sizeof(init_fw_cb->ipv6_addr1));
1103                 else
1104                         /* IPv6 Addr 0 */
1105                         memcpy(init_fw_cb->ipv6_addr0, iface_param->value,
1106                                sizeof(init_fw_cb->ipv6_addr0));
1107                 break;
1108         case ISCSI_NET_PARAM_IPV6_LINKLOCAL:
1109                 if (iface_param->iface_num & 0x1)
1110                         break;
1111                 memcpy(init_fw_cb->ipv6_if_id, &iface_param->value[8],
1112                        sizeof(init_fw_cb->ipv6_if_id));
1113                 break;
1114         case ISCSI_NET_PARAM_IPV6_ROUTER:
1115                 if (iface_param->iface_num & 0x1)
1116                         break;
1117                 memcpy(init_fw_cb->ipv6_dflt_rtr_addr, iface_param->value,
1118                        sizeof(init_fw_cb->ipv6_dflt_rtr_addr));
1119                 break;
1120         case ISCSI_NET_PARAM_IPV6_ADDR_AUTOCFG:
1121                 /* Autocfg applies to even interface */
1122                 if (iface_param->iface_num & 0x1)
1123                         break;
1124
1125                 if (iface_param->value[0] == ISCSI_IPV6_AUTOCFG_DISABLE)
1126                         init_fw_cb->ipv6_addtl_opts &=
1127                                 cpu_to_le16(
1128                                   ~IPV6_ADDOPT_NEIGHBOR_DISCOVERY_ADDR_ENABLE);
1129                 else if (iface_param->value[0] == ISCSI_IPV6_AUTOCFG_ND_ENABLE)
1130                         init_fw_cb->ipv6_addtl_opts |=
1131                                 cpu_to_le16(
1132                                   IPV6_ADDOPT_NEIGHBOR_DISCOVERY_ADDR_ENABLE);
1133                 else
1134                         ql4_printk(KERN_ERR, ha, "Invalid autocfg setting for "
1135                                    "IPv6 addr\n");
1136                 break;
1137         case ISCSI_NET_PARAM_IPV6_LINKLOCAL_AUTOCFG:
1138                 /* Autocfg applies to even interface */
1139                 if (iface_param->iface_num & 0x1)
1140                         break;
1141
1142                 if (iface_param->value[0] ==
1143                     ISCSI_IPV6_LINKLOCAL_AUTOCFG_ENABLE)
1144                         init_fw_cb->ipv6_addtl_opts |= cpu_to_le16(
1145                                         IPV6_ADDOPT_AUTOCONFIG_LINK_LOCAL_ADDR);
1146                 else if (iface_param->value[0] ==
1147                          ISCSI_IPV6_LINKLOCAL_AUTOCFG_DISABLE)
1148                         init_fw_cb->ipv6_addtl_opts &= cpu_to_le16(
1149                                        ~IPV6_ADDOPT_AUTOCONFIG_LINK_LOCAL_ADDR);
1150                 else
1151                         ql4_printk(KERN_ERR, ha, "Invalid autocfg setting for "
1152                                    "IPv6 linklocal addr\n");
1153                 break;
1154         case ISCSI_NET_PARAM_IPV6_ROUTER_AUTOCFG:
1155                 /* Autocfg applies to even interface */
1156                 if (iface_param->iface_num & 0x1)
1157                         break;
1158
1159                 if (iface_param->value[0] == ISCSI_IPV6_ROUTER_AUTOCFG_ENABLE)
1160                         memset(init_fw_cb->ipv6_dflt_rtr_addr, 0,
1161                                sizeof(init_fw_cb->ipv6_dflt_rtr_addr));
1162                 break;
1163         case ISCSI_NET_PARAM_IFACE_ENABLE:
1164                 if (iface_param->value[0] == ISCSI_IFACE_ENABLE) {
1165                         init_fw_cb->ipv6_opts |=
1166                                 cpu_to_le16(IPV6_OPT_IPV6_PROTOCOL_ENABLE);
1167                         qla4xxx_create_ipv6_iface(ha);
1168                 } else {
1169                         init_fw_cb->ipv6_opts &=
1170                                 cpu_to_le16(~IPV6_OPT_IPV6_PROTOCOL_ENABLE &
1171                                             0xFFFF);
1172                         qla4xxx_destroy_ipv6_iface(ha);
1173                 }
1174                 break;
1175         case ISCSI_NET_PARAM_VLAN_TAG:
1176                 if (iface_param->len != sizeof(init_fw_cb->ipv6_vlan_tag))
1177                         break;
1178                 init_fw_cb->ipv6_vlan_tag =
1179                                 cpu_to_be16(*(uint16_t *)iface_param->value);
1180                 break;
1181         case ISCSI_NET_PARAM_VLAN_ENABLED:
1182                 if (iface_param->value[0] == ISCSI_VLAN_ENABLE)
1183                         init_fw_cb->ipv6_opts |=
1184                                 cpu_to_le16(IPV6_OPT_VLAN_TAGGING_ENABLE);
1185                 else
1186                         init_fw_cb->ipv6_opts &=
1187                                 cpu_to_le16(~IPV6_OPT_VLAN_TAGGING_ENABLE);
1188                 break;
1189         case ISCSI_NET_PARAM_MTU:
1190                 init_fw_cb->eth_mtu_size =
1191                                 cpu_to_le16(*(uint16_t *)iface_param->value);
1192                 break;
1193         case ISCSI_NET_PARAM_PORT:
1194                 /* Autocfg applies to even interface */
1195                 if (iface_param->iface_num & 0x1)
1196                         break;
1197
1198                 init_fw_cb->ipv6_port =
1199                                 cpu_to_le16(*(uint16_t *)iface_param->value);
1200                 break;
1201         default:
1202                 ql4_printk(KERN_ERR, ha, "Unknown IPv6 param = %d\n",
1203                            iface_param->param);
1204                 break;
1205         }
1206 }
1207
1208 static void qla4xxx_set_ipv4(struct scsi_qla_host *ha,
1209                              struct iscsi_iface_param_info *iface_param,
1210                              struct addr_ctrl_blk *init_fw_cb)
1211 {
1212         switch (iface_param->param) {
1213         case ISCSI_NET_PARAM_IPV4_ADDR:
1214                 memcpy(init_fw_cb->ipv4_addr, iface_param->value,
1215                        sizeof(init_fw_cb->ipv4_addr));
1216                 break;
1217         case ISCSI_NET_PARAM_IPV4_SUBNET:
1218                 memcpy(init_fw_cb->ipv4_subnet, iface_param->value,
1219                        sizeof(init_fw_cb->ipv4_subnet));
1220                 break;
1221         case ISCSI_NET_PARAM_IPV4_GW:
1222                 memcpy(init_fw_cb->ipv4_gw_addr, iface_param->value,
1223                        sizeof(init_fw_cb->ipv4_gw_addr));
1224                 break;
1225         case ISCSI_NET_PARAM_IPV4_BOOTPROTO:
1226                 if (iface_param->value[0] == ISCSI_BOOTPROTO_DHCP)
1227                         init_fw_cb->ipv4_tcp_opts |=
1228                                         cpu_to_le16(TCPOPT_DHCP_ENABLE);
1229                 else if (iface_param->value[0] == ISCSI_BOOTPROTO_STATIC)
1230                         init_fw_cb->ipv4_tcp_opts &=
1231                                         cpu_to_le16(~TCPOPT_DHCP_ENABLE);
1232                 else
1233                         ql4_printk(KERN_ERR, ha, "Invalid IPv4 bootproto\n");
1234                 break;
1235         case ISCSI_NET_PARAM_IFACE_ENABLE:
1236                 if (iface_param->value[0] == ISCSI_IFACE_ENABLE) {
1237                         init_fw_cb->ipv4_ip_opts |=
1238                                 cpu_to_le16(IPOPT_IPV4_PROTOCOL_ENABLE);
1239                         qla4xxx_create_ipv4_iface(ha);
1240                 } else {
1241                         init_fw_cb->ipv4_ip_opts &=
1242                                 cpu_to_le16(~IPOPT_IPV4_PROTOCOL_ENABLE &
1243                                             0xFFFF);
1244                         qla4xxx_destroy_ipv4_iface(ha);
1245                 }
1246                 break;
1247         case ISCSI_NET_PARAM_VLAN_TAG:
1248                 if (iface_param->len != sizeof(init_fw_cb->ipv4_vlan_tag))
1249                         break;
1250                 init_fw_cb->ipv4_vlan_tag =
1251                                 cpu_to_be16(*(uint16_t *)iface_param->value);
1252                 break;
1253         case ISCSI_NET_PARAM_VLAN_ENABLED:
1254                 if (iface_param->value[0] == ISCSI_VLAN_ENABLE)
1255                         init_fw_cb->ipv4_ip_opts |=
1256                                         cpu_to_le16(IPOPT_VLAN_TAGGING_ENABLE);
1257                 else
1258                         init_fw_cb->ipv4_ip_opts &=
1259                                         cpu_to_le16(~IPOPT_VLAN_TAGGING_ENABLE);
1260                 break;
1261         case ISCSI_NET_PARAM_MTU:
1262                 init_fw_cb->eth_mtu_size =
1263                                 cpu_to_le16(*(uint16_t *)iface_param->value);
1264                 break;
1265         case ISCSI_NET_PARAM_PORT:
1266                 init_fw_cb->ipv4_port =
1267                                 cpu_to_le16(*(uint16_t *)iface_param->value);
1268                 break;
1269         default:
1270                 ql4_printk(KERN_ERR, ha, "Unknown IPv4 param = %d\n",
1271                            iface_param->param);
1272                 break;
1273         }
1274 }
1275
1276 static void
1277 qla4xxx_initcb_to_acb(struct addr_ctrl_blk *init_fw_cb)
1278 {
1279         struct addr_ctrl_blk_def *acb;
1280         acb = (struct addr_ctrl_blk_def *)init_fw_cb;
1281         memset(acb->reserved1, 0, sizeof(acb->reserved1));
1282         memset(acb->reserved2, 0, sizeof(acb->reserved2));
1283         memset(acb->reserved3, 0, sizeof(acb->reserved3));
1284         memset(acb->reserved4, 0, sizeof(acb->reserved4));
1285         memset(acb->reserved5, 0, sizeof(acb->reserved5));
1286         memset(acb->reserved6, 0, sizeof(acb->reserved6));
1287         memset(acb->reserved7, 0, sizeof(acb->reserved7));
1288         memset(acb->reserved8, 0, sizeof(acb->reserved8));
1289         memset(acb->reserved9, 0, sizeof(acb->reserved9));
1290         memset(acb->reserved10, 0, sizeof(acb->reserved10));
1291         memset(acb->reserved11, 0, sizeof(acb->reserved11));
1292         memset(acb->reserved12, 0, sizeof(acb->reserved12));
1293         memset(acb->reserved13, 0, sizeof(acb->reserved13));
1294         memset(acb->reserved14, 0, sizeof(acb->reserved14));
1295         memset(acb->reserved15, 0, sizeof(acb->reserved15));
1296 }
1297
1298 static int
1299 qla4xxx_iface_set_param(struct Scsi_Host *shost, void *data, uint32_t len)
1300 {
1301         struct scsi_qla_host *ha = to_qla_host(shost);
1302         int rval = 0;
1303         struct iscsi_iface_param_info *iface_param = NULL;
1304         struct addr_ctrl_blk *init_fw_cb = NULL;
1305         dma_addr_t init_fw_cb_dma;
1306         uint32_t mbox_cmd[MBOX_REG_COUNT];
1307         uint32_t mbox_sts[MBOX_REG_COUNT];
1308         uint32_t rem = len;
1309         struct nlattr *attr;
1310
1311         init_fw_cb = dma_alloc_coherent(&ha->pdev->dev,
1312                                         sizeof(struct addr_ctrl_blk),
1313                                         &init_fw_cb_dma, GFP_KERNEL);
1314         if (!init_fw_cb) {
1315                 ql4_printk(KERN_ERR, ha, "%s: Unable to alloc init_cb\n",
1316                            __func__);
1317                 return -ENOMEM;
1318         }
1319
1320         memset(init_fw_cb, 0, sizeof(struct addr_ctrl_blk));
1321         memset(&mbox_cmd, 0, sizeof(mbox_cmd));
1322         memset(&mbox_sts, 0, sizeof(mbox_sts));
1323
1324         if (qla4xxx_get_ifcb(ha, &mbox_cmd[0], &mbox_sts[0], init_fw_cb_dma)) {
1325                 ql4_printk(KERN_ERR, ha, "%s: get ifcb failed\n", __func__);
1326                 rval = -EIO;
1327                 goto exit_init_fw_cb;
1328         }
1329
1330         nla_for_each_attr(attr, data, len, rem) {
1331                 iface_param = nla_data(attr);
1332
1333                 if (iface_param->param_type != ISCSI_NET_PARAM)
1334                         continue;
1335
1336                 switch (iface_param->iface_type) {
1337                 case ISCSI_IFACE_TYPE_IPV4:
1338                         switch (iface_param->iface_num) {
1339                         case 0:
1340                                 qla4xxx_set_ipv4(ha, iface_param, init_fw_cb);
1341                                 break;
1342                         default:
1343                                 /* Cannot have more than one IPv4 interface */
1344                                 ql4_printk(KERN_ERR, ha, "Invalid IPv4 iface "
1345                                            "number = %d\n",
1346                                            iface_param->iface_num);
1347                                 break;
1348                         }
1349                         break;
1350                 case ISCSI_IFACE_TYPE_IPV6:
1351                         switch (iface_param->iface_num) {
1352                         case 0:
1353                         case 1:
1354                                 qla4xxx_set_ipv6(ha, iface_param, init_fw_cb);
1355                                 break;
1356                         default:
1357                                 /* Cannot have more than two IPv6 interface */
1358                                 ql4_printk(KERN_ERR, ha, "Invalid IPv6 iface "
1359                                            "number = %d\n",
1360                                            iface_param->iface_num);
1361                                 break;
1362                         }
1363                         break;
1364                 default:
1365                         ql4_printk(KERN_ERR, ha, "Invalid iface type\n");
1366                         break;
1367                 }
1368         }
1369
1370         init_fw_cb->cookie = cpu_to_le32(0x11BEAD5A);
1371
1372         rval = qla4xxx_set_flash(ha, init_fw_cb_dma, FLASH_SEGMENT_IFCB,
1373                                  sizeof(struct addr_ctrl_blk),
1374                                  FLASH_OPT_RMW_COMMIT);
1375         if (rval != QLA_SUCCESS) {
1376                 ql4_printk(KERN_ERR, ha, "%s: set flash mbx failed\n",
1377                            __func__);
1378                 rval = -EIO;
1379                 goto exit_init_fw_cb;
1380         }
1381
1382         rval = qla4xxx_disable_acb(ha);
1383         if (rval != QLA_SUCCESS) {
1384                 ql4_printk(KERN_ERR, ha, "%s: disable acb mbx failed\n",
1385                            __func__);
1386                 rval = -EIO;
1387                 goto exit_init_fw_cb;
1388         }
1389
1390         wait_for_completion_timeout(&ha->disable_acb_comp,
1391                                     DISABLE_ACB_TOV * HZ);
1392
1393         qla4xxx_initcb_to_acb(init_fw_cb);
1394
1395         rval = qla4xxx_set_acb(ha, &mbox_cmd[0], &mbox_sts[0], init_fw_cb_dma);
1396         if (rval != QLA_SUCCESS) {
1397                 ql4_printk(KERN_ERR, ha, "%s: set acb mbx failed\n",
1398                            __func__);
1399                 rval = -EIO;
1400                 goto exit_init_fw_cb;
1401         }
1402
1403         memset(init_fw_cb, 0, sizeof(struct addr_ctrl_blk));
1404         qla4xxx_update_local_ifcb(ha, &mbox_cmd[0], &mbox_sts[0], init_fw_cb,
1405                                   init_fw_cb_dma);
1406
1407 exit_init_fw_cb:
1408         dma_free_coherent(&ha->pdev->dev, sizeof(struct addr_ctrl_blk),
1409                           init_fw_cb, init_fw_cb_dma);
1410
1411         return rval;
1412 }
1413
1414 static int qla4xxx_session_get_param(struct iscsi_cls_session *cls_sess,
1415                                      enum iscsi_param param, char *buf)
1416 {
1417         struct iscsi_session *sess = cls_sess->dd_data;
1418         struct ddb_entry *ddb_entry = sess->dd_data;
1419         struct scsi_qla_host *ha = ddb_entry->ha;
1420         int rval, len;
1421         uint16_t idx;
1422
1423         switch (param) {
1424         case ISCSI_PARAM_CHAP_IN_IDX:
1425                 rval = qla4xxx_get_chap_index(ha, sess->username_in,
1426                                               sess->password_in, BIDI_CHAP,
1427                                               &idx);
1428                 if (rval)
1429                         len = sprintf(buf, "\n");
1430                 else
1431                         len = sprintf(buf, "%hu\n", idx);
1432                 break;
1433         case ISCSI_PARAM_CHAP_OUT_IDX:
1434                 rval = qla4xxx_get_chap_index(ha, sess->username,
1435                                               sess->password, LOCAL_CHAP,
1436                                               &idx);
1437                 if (rval)
1438                         len = sprintf(buf, "\n");
1439                 else
1440                         len = sprintf(buf, "%hu\n", idx);
1441                 break;
1442         default:
1443                 return iscsi_session_get_param(cls_sess, param, buf);
1444         }
1445
1446         return len;
1447 }
1448
1449 static int qla4xxx_conn_get_param(struct iscsi_cls_conn *cls_conn,
1450                                   enum iscsi_param param, char *buf)
1451 {
1452         struct iscsi_conn *conn;
1453         struct qla_conn *qla_conn;
1454         struct sockaddr *dst_addr;
1455         int len = 0;
1456
1457         conn = cls_conn->dd_data;
1458         qla_conn = conn->dd_data;
1459         dst_addr = (struct sockaddr *)&qla_conn->qla_ep->dst_addr;
1460
1461         switch (param) {
1462         case ISCSI_PARAM_CONN_PORT:
1463         case ISCSI_PARAM_CONN_ADDRESS:
1464                 return iscsi_conn_get_addr_param((struct sockaddr_storage *)
1465                                                  dst_addr, param, buf);
1466         default:
1467                 return iscsi_conn_get_param(cls_conn, param, buf);
1468         }
1469
1470         return len;
1471
1472 }
1473
1474 int qla4xxx_get_ddb_index(struct scsi_qla_host *ha, uint16_t *ddb_index)
1475 {
1476         uint32_t mbx_sts = 0;
1477         uint16_t tmp_ddb_index;
1478         int ret;
1479
1480 get_ddb_index:
1481         tmp_ddb_index = find_first_zero_bit(ha->ddb_idx_map, MAX_DDB_ENTRIES);
1482
1483         if (tmp_ddb_index >= MAX_DDB_ENTRIES) {
1484                 DEBUG2(ql4_printk(KERN_INFO, ha,
1485                                   "Free DDB index not available\n"));
1486                 ret = QLA_ERROR;
1487                 goto exit_get_ddb_index;
1488         }
1489
1490         if (test_and_set_bit(tmp_ddb_index, ha->ddb_idx_map))
1491                 goto get_ddb_index;
1492
1493         DEBUG2(ql4_printk(KERN_INFO, ha,
1494                           "Found a free DDB index at %d\n", tmp_ddb_index));
1495         ret = qla4xxx_req_ddb_entry(ha, tmp_ddb_index, &mbx_sts);
1496         if (ret == QLA_ERROR) {
1497                 if (mbx_sts == MBOX_STS_COMMAND_ERROR) {
1498                         ql4_printk(KERN_INFO, ha,
1499                                    "DDB index = %d not available trying next\n",
1500                                    tmp_ddb_index);
1501                         goto get_ddb_index;
1502                 }
1503                 DEBUG2(ql4_printk(KERN_INFO, ha,
1504                                   "Free FW DDB not available\n"));
1505         }
1506
1507         *ddb_index = tmp_ddb_index;
1508
1509 exit_get_ddb_index:
1510         return ret;
1511 }
1512
1513 static int qla4xxx_match_ipaddress(struct scsi_qla_host *ha,
1514                                    struct ddb_entry *ddb_entry,
1515                                    char *existing_ipaddr,
1516                                    char *user_ipaddr)
1517 {
1518         uint8_t dst_ipaddr[IPv6_ADDR_LEN];
1519         char formatted_ipaddr[DDB_IPADDR_LEN];
1520         int status = QLA_SUCCESS, ret = 0;
1521
1522         if (ddb_entry->fw_ddb_entry.options & DDB_OPT_IPV6_DEVICE) {
1523                 ret = in6_pton(user_ipaddr, strlen(user_ipaddr), dst_ipaddr,
1524                                '\0', NULL);
1525                 if (ret == 0) {
1526                         status = QLA_ERROR;
1527                         goto out_match;
1528                 }
1529                 ret = sprintf(formatted_ipaddr, "%pI6", dst_ipaddr);
1530         } else {
1531                 ret = in4_pton(user_ipaddr, strlen(user_ipaddr), dst_ipaddr,
1532                                '\0', NULL);
1533                 if (ret == 0) {
1534                         status = QLA_ERROR;
1535                         goto out_match;
1536                 }
1537                 ret = sprintf(formatted_ipaddr, "%pI4", dst_ipaddr);
1538         }
1539
1540         if (strcmp(existing_ipaddr, formatted_ipaddr))
1541                 status = QLA_ERROR;
1542
1543 out_match:
1544         return status;
1545 }
1546
1547 static int qla4xxx_match_fwdb_session(struct scsi_qla_host *ha,
1548                                       struct iscsi_cls_conn *cls_conn)
1549 {
1550         int idx = 0, max_ddbs, rval;
1551         struct iscsi_cls_session *cls_sess = iscsi_conn_to_session(cls_conn);
1552         struct iscsi_session *sess, *existing_sess;
1553         struct iscsi_conn *conn, *existing_conn;
1554         struct ddb_entry *ddb_entry;
1555
1556         sess = cls_sess->dd_data;
1557         conn = cls_conn->dd_data;
1558
1559         if (sess->targetname == NULL ||
1560             conn->persistent_address == NULL ||
1561             conn->persistent_port == 0)
1562                 return QLA_ERROR;
1563
1564         max_ddbs =  is_qla40XX(ha) ? MAX_DEV_DB_ENTRIES_40XX :
1565                                      MAX_DEV_DB_ENTRIES;
1566
1567         for (idx = 0; idx < max_ddbs; idx++) {
1568                 ddb_entry = qla4xxx_lookup_ddb_by_fw_index(ha, idx);
1569                 if (ddb_entry == NULL)
1570                         continue;
1571
1572                 if (ddb_entry->ddb_type != FLASH_DDB)
1573                         continue;
1574
1575                 existing_sess = ddb_entry->sess->dd_data;
1576                 existing_conn = ddb_entry->conn->dd_data;
1577
1578                 if (existing_sess->targetname == NULL ||
1579                     existing_conn->persistent_address == NULL ||
1580                     existing_conn->persistent_port == 0)
1581                         continue;
1582
1583                 DEBUG2(ql4_printk(KERN_INFO, ha,
1584                                   "IQN = %s User IQN = %s\n",
1585                                   existing_sess->targetname,
1586                                   sess->targetname));
1587
1588                 DEBUG2(ql4_printk(KERN_INFO, ha,
1589                                   "IP = %s User IP = %s\n",
1590                                   existing_conn->persistent_address,
1591                                   conn->persistent_address));
1592
1593                 DEBUG2(ql4_printk(KERN_INFO, ha,
1594                                   "Port = %d User Port = %d\n",
1595                                   existing_conn->persistent_port,
1596                                   conn->persistent_port));
1597
1598                 if (strcmp(existing_sess->targetname, sess->targetname))
1599                         continue;
1600                 rval = qla4xxx_match_ipaddress(ha, ddb_entry,
1601                                         existing_conn->persistent_address,
1602                                         conn->persistent_address);
1603                 if (rval == QLA_ERROR)
1604                         continue;
1605                 if (existing_conn->persistent_port != conn->persistent_port)
1606                         continue;
1607                 break;
1608         }
1609
1610         if (idx == max_ddbs)
1611                 return QLA_ERROR;
1612
1613         DEBUG2(ql4_printk(KERN_INFO, ha,
1614                           "Match found in fwdb sessions\n"));
1615         return QLA_SUCCESS;
1616 }
1617
1618 static struct iscsi_cls_session *
1619 qla4xxx_session_create(struct iscsi_endpoint *ep,
1620                         uint16_t cmds_max, uint16_t qdepth,
1621                         uint32_t initial_cmdsn)
1622 {
1623         struct iscsi_cls_session *cls_sess;
1624         struct scsi_qla_host *ha;
1625         struct qla_endpoint *qla_ep;
1626         struct ddb_entry *ddb_entry;
1627         uint16_t ddb_index;
1628         struct iscsi_session *sess;
1629         struct sockaddr *dst_addr;
1630         int ret;
1631
1632         DEBUG2(printk(KERN_INFO "Func: %s\n", __func__));
1633         if (!ep) {
1634                 printk(KERN_ERR "qla4xxx: missing ep.\n");
1635                 return NULL;
1636         }
1637
1638         qla_ep = ep->dd_data;
1639         dst_addr = (struct sockaddr *)&qla_ep->dst_addr;
1640         ha = to_qla_host(qla_ep->host);
1641
1642         ret = qla4xxx_get_ddb_index(ha, &ddb_index);
1643         if (ret == QLA_ERROR)
1644                 return NULL;
1645
1646         cls_sess = iscsi_session_setup(&qla4xxx_iscsi_transport, qla_ep->host,
1647                                        cmds_max, sizeof(struct ddb_entry),
1648                                        sizeof(struct ql4_task_data),
1649                                        initial_cmdsn, ddb_index);
1650         if (!cls_sess)
1651                 return NULL;
1652
1653         sess = cls_sess->dd_data;
1654         ddb_entry = sess->dd_data;
1655         ddb_entry->fw_ddb_index = ddb_index;
1656         ddb_entry->fw_ddb_device_state = DDB_DS_NO_CONNECTION_ACTIVE;
1657         ddb_entry->ha = ha;
1658         ddb_entry->sess = cls_sess;
1659         ddb_entry->unblock_sess = qla4xxx_unblock_ddb;
1660         ddb_entry->ddb_change = qla4xxx_ddb_change;
1661         cls_sess->recovery_tmo = ql4xsess_recovery_tmo;
1662         ha->fw_ddb_index_map[ddb_entry->fw_ddb_index] = ddb_entry;
1663         ha->tot_ddbs++;
1664
1665         return cls_sess;
1666 }
1667
1668 static void qla4xxx_session_destroy(struct iscsi_cls_session *cls_sess)
1669 {
1670         struct iscsi_session *sess;
1671         struct ddb_entry *ddb_entry;
1672         struct scsi_qla_host *ha;
1673         unsigned long flags, wtime;
1674         struct dev_db_entry *fw_ddb_entry = NULL;
1675         dma_addr_t fw_ddb_entry_dma;
1676         uint32_t ddb_state;
1677         int ret;
1678
1679         DEBUG2(printk(KERN_INFO "Func: %s\n", __func__));
1680         sess = cls_sess->dd_data;
1681         ddb_entry = sess->dd_data;
1682         ha = ddb_entry->ha;
1683
1684         fw_ddb_entry = dma_alloc_coherent(&ha->pdev->dev, sizeof(*fw_ddb_entry),
1685                                           &fw_ddb_entry_dma, GFP_KERNEL);
1686         if (!fw_ddb_entry) {
1687                 ql4_printk(KERN_ERR, ha,
1688                            "%s: Unable to allocate dma buffer\n", __func__);
1689                 goto destroy_session;
1690         }
1691
1692         wtime = jiffies + (HZ * LOGOUT_TOV);
1693         do {
1694                 ret = qla4xxx_get_fwddb_entry(ha, ddb_entry->fw_ddb_index,
1695                                               fw_ddb_entry, fw_ddb_entry_dma,
1696                                               NULL, NULL, &ddb_state, NULL,
1697                                               NULL, NULL);
1698                 if (ret == QLA_ERROR)
1699                         goto destroy_session;
1700
1701                 if ((ddb_state == DDB_DS_NO_CONNECTION_ACTIVE) ||
1702                     (ddb_state == DDB_DS_SESSION_FAILED))
1703                         goto destroy_session;
1704
1705                 schedule_timeout_uninterruptible(HZ);
1706         } while ((time_after(wtime, jiffies)));
1707
1708 destroy_session:
1709         qla4xxx_clear_ddb_entry(ha, ddb_entry->fw_ddb_index);
1710
1711         spin_lock_irqsave(&ha->hardware_lock, flags);
1712         qla4xxx_free_ddb(ha, ddb_entry);
1713         spin_unlock_irqrestore(&ha->hardware_lock, flags);
1714
1715         iscsi_session_teardown(cls_sess);
1716
1717         if (fw_ddb_entry)
1718                 dma_free_coherent(&ha->pdev->dev, sizeof(*fw_ddb_entry),
1719                                   fw_ddb_entry, fw_ddb_entry_dma);
1720 }
1721
1722 static struct iscsi_cls_conn *
1723 qla4xxx_conn_create(struct iscsi_cls_session *cls_sess, uint32_t conn_idx)
1724 {
1725         struct iscsi_cls_conn *cls_conn;
1726         struct iscsi_session *sess;
1727         struct ddb_entry *ddb_entry;
1728
1729         DEBUG2(printk(KERN_INFO "Func: %s\n", __func__));
1730         cls_conn = iscsi_conn_setup(cls_sess, sizeof(struct qla_conn),
1731                                     conn_idx);
1732         if (!cls_conn)
1733                 return NULL;
1734
1735         sess = cls_sess->dd_data;
1736         ddb_entry = sess->dd_data;
1737         ddb_entry->conn = cls_conn;
1738
1739         return cls_conn;
1740 }
1741
1742 static int qla4xxx_conn_bind(struct iscsi_cls_session *cls_session,
1743                              struct iscsi_cls_conn *cls_conn,
1744                              uint64_t transport_fd, int is_leading)
1745 {
1746         struct iscsi_conn *conn;
1747         struct qla_conn *qla_conn;
1748         struct iscsi_endpoint *ep;
1749
1750         DEBUG2(printk(KERN_INFO "Func: %s\n", __func__));
1751
1752         if (iscsi_conn_bind(cls_session, cls_conn, is_leading))
1753                 return -EINVAL;
1754         ep = iscsi_lookup_endpoint(transport_fd);
1755         conn = cls_conn->dd_data;
1756         qla_conn = conn->dd_data;
1757         qla_conn->qla_ep = ep->dd_data;
1758         return 0;
1759 }
1760
1761 static int qla4xxx_conn_start(struct iscsi_cls_conn *cls_conn)
1762 {
1763         struct iscsi_cls_session *cls_sess = iscsi_conn_to_session(cls_conn);
1764         struct iscsi_session *sess;
1765         struct ddb_entry *ddb_entry;
1766         struct scsi_qla_host *ha;
1767         struct dev_db_entry *fw_ddb_entry = NULL;
1768         dma_addr_t fw_ddb_entry_dma;
1769         uint32_t mbx_sts = 0;
1770         int ret = 0;
1771         int status = QLA_SUCCESS;
1772
1773         DEBUG2(printk(KERN_INFO "Func: %s\n", __func__));
1774         sess = cls_sess->dd_data;
1775         ddb_entry = sess->dd_data;
1776         ha = ddb_entry->ha;
1777
1778         /* Check if we have  matching FW DDB, if yes then do not
1779          * login to this target. This could cause target to logout previous
1780          * connection
1781          */
1782         ret = qla4xxx_match_fwdb_session(ha, cls_conn);
1783         if (ret == QLA_SUCCESS) {
1784                 ql4_printk(KERN_INFO, ha,
1785                            "Session already exist in FW.\n");
1786                 ret = -EEXIST;
1787                 goto exit_conn_start;
1788         }
1789
1790         fw_ddb_entry = dma_alloc_coherent(&ha->pdev->dev, sizeof(*fw_ddb_entry),
1791                                           &fw_ddb_entry_dma, GFP_KERNEL);
1792         if (!fw_ddb_entry) {
1793                 ql4_printk(KERN_ERR, ha,
1794                            "%s: Unable to allocate dma buffer\n", __func__);
1795                 ret = -ENOMEM;
1796                 goto exit_conn_start;
1797         }
1798
1799         ret = qla4xxx_set_param_ddbentry(ha, ddb_entry, cls_conn, &mbx_sts);
1800         if (ret) {
1801                 /* If iscsid is stopped and started then no need to do
1802                 * set param again since ddb state will be already
1803                 * active and FW does not allow set ddb to an
1804                 * active session.
1805                 */
1806                 if (mbx_sts)
1807                         if (ddb_entry->fw_ddb_device_state ==
1808                                                 DDB_DS_SESSION_ACTIVE) {
1809                                 ddb_entry->unblock_sess(ddb_entry->sess);
1810                                 goto exit_set_param;
1811                         }
1812
1813                 ql4_printk(KERN_ERR, ha, "%s: Failed set param for index[%d]\n",
1814                            __func__, ddb_entry->fw_ddb_index);
1815                 goto exit_conn_start;
1816         }
1817
1818         status = qla4xxx_conn_open(ha, ddb_entry->fw_ddb_index);
1819         if (status == QLA_ERROR) {
1820                 ql4_printk(KERN_ERR, ha, "%s: Login failed: %s\n", __func__,
1821                            sess->targetname);
1822                 ret = -EINVAL;
1823                 goto exit_conn_start;
1824         }
1825
1826         if (ddb_entry->fw_ddb_device_state == DDB_DS_NO_CONNECTION_ACTIVE)
1827                 ddb_entry->fw_ddb_device_state = DDB_DS_LOGIN_IN_PROCESS;
1828
1829         DEBUG2(printk(KERN_INFO "%s: DDB state [%d]\n", __func__,
1830                       ddb_entry->fw_ddb_device_state));
1831
1832 exit_set_param:
1833         ret = 0;
1834
1835 exit_conn_start:
1836         if (fw_ddb_entry)
1837                 dma_free_coherent(&ha->pdev->dev, sizeof(*fw_ddb_entry),
1838                                   fw_ddb_entry, fw_ddb_entry_dma);
1839         return ret;
1840 }
1841
1842 static void qla4xxx_conn_destroy(struct iscsi_cls_conn *cls_conn)
1843 {
1844         struct iscsi_cls_session *cls_sess = iscsi_conn_to_session(cls_conn);
1845         struct iscsi_session *sess;
1846         struct scsi_qla_host *ha;
1847         struct ddb_entry *ddb_entry;
1848         int options;
1849
1850         DEBUG2(printk(KERN_INFO "Func: %s\n", __func__));
1851         sess = cls_sess->dd_data;
1852         ddb_entry = sess->dd_data;
1853         ha = ddb_entry->ha;
1854
1855         options = LOGOUT_OPTION_CLOSE_SESSION;
1856         if (qla4xxx_session_logout_ddb(ha, ddb_entry, options) == QLA_ERROR)
1857                 ql4_printk(KERN_ERR, ha, "%s: Logout failed\n", __func__);
1858 }
1859
1860 static void qla4xxx_task_work(struct work_struct *wdata)
1861 {
1862         struct ql4_task_data *task_data;
1863         struct scsi_qla_host *ha;
1864         struct passthru_status *sts;
1865         struct iscsi_task *task;
1866         struct iscsi_hdr *hdr;
1867         uint8_t *data;
1868         uint32_t data_len;
1869         struct iscsi_conn *conn;
1870         int hdr_len;
1871         itt_t itt;
1872
1873         task_data = container_of(wdata, struct ql4_task_data, task_work);
1874         ha = task_data->ha;
1875         task = task_data->task;
1876         sts = &task_data->sts;
1877         hdr_len = sizeof(struct iscsi_hdr);
1878
1879         DEBUG3(printk(KERN_INFO "Status returned\n"));
1880         DEBUG3(qla4xxx_dump_buffer(sts, 64));
1881         DEBUG3(printk(KERN_INFO "Response buffer"));
1882         DEBUG3(qla4xxx_dump_buffer(task_data->resp_buffer, 64));
1883
1884         conn = task->conn;
1885
1886         switch (sts->completionStatus) {
1887         case PASSTHRU_STATUS_COMPLETE:
1888                 hdr = (struct iscsi_hdr *)task_data->resp_buffer;
1889                 /* Assign back the itt in hdr, until we use the PREASSIGN_TAG */
1890                 itt = sts->handle;
1891                 hdr->itt = itt;
1892                 data = task_data->resp_buffer + hdr_len;
1893                 data_len = task_data->resp_len - hdr_len;
1894                 iscsi_complete_pdu(conn, hdr, data, data_len);
1895                 break;
1896         default:
1897                 ql4_printk(KERN_ERR, ha, "Passthru failed status = 0x%x\n",
1898                            sts->completionStatus);
1899                 break;
1900         }
1901         return;
1902 }
1903
1904 static int qla4xxx_alloc_pdu(struct iscsi_task *task, uint8_t opcode)
1905 {
1906         struct ql4_task_data *task_data;
1907         struct iscsi_session *sess;
1908         struct ddb_entry *ddb_entry;
1909         struct scsi_qla_host *ha;
1910         int hdr_len;
1911
1912         sess = task->conn->session;
1913         ddb_entry = sess->dd_data;
1914         ha = ddb_entry->ha;
1915         task_data = task->dd_data;
1916         memset(task_data, 0, sizeof(struct ql4_task_data));
1917
1918         if (task->sc) {
1919                 ql4_printk(KERN_INFO, ha,
1920                            "%s: SCSI Commands not implemented\n", __func__);
1921                 return -EINVAL;
1922         }
1923
1924         hdr_len = sizeof(struct iscsi_hdr);
1925         task_data->ha = ha;
1926         task_data->task = task;
1927
1928         if (task->data_count) {
1929                 task_data->data_dma = dma_map_single(&ha->pdev->dev, task->data,
1930                                                      task->data_count,
1931                                                      PCI_DMA_TODEVICE);
1932         }
1933
1934         DEBUG2(ql4_printk(KERN_INFO, ha, "%s: MaxRecvLen %u, iscsi hrd %d\n",
1935                       __func__, task->conn->max_recv_dlength, hdr_len));
1936
1937         task_data->resp_len = task->conn->max_recv_dlength + hdr_len;
1938         task_data->resp_buffer = dma_alloc_coherent(&ha->pdev->dev,
1939                                                     task_data->resp_len,
1940                                                     &task_data->resp_dma,
1941                                                     GFP_ATOMIC);
1942         if (!task_data->resp_buffer)
1943                 goto exit_alloc_pdu;
1944
1945         task_data->req_len = task->data_count + hdr_len;
1946         task_data->req_buffer = dma_alloc_coherent(&ha->pdev->dev,
1947                                                    task_data->req_len,
1948                                                    &task_data->req_dma,
1949                                                    GFP_ATOMIC);
1950         if (!task_data->req_buffer)
1951                 goto exit_alloc_pdu;
1952
1953         task->hdr = task_data->req_buffer;
1954
1955         INIT_WORK(&task_data->task_work, qla4xxx_task_work);
1956
1957         return 0;
1958
1959 exit_alloc_pdu:
1960         if (task_data->resp_buffer)
1961                 dma_free_coherent(&ha->pdev->dev, task_data->resp_len,
1962                                   task_data->resp_buffer, task_data->resp_dma);
1963
1964         if (task_data->req_buffer)
1965                 dma_free_coherent(&ha->pdev->dev, task_data->req_len,
1966                                   task_data->req_buffer, task_data->req_dma);
1967         return -ENOMEM;
1968 }
1969
1970 static void qla4xxx_task_cleanup(struct iscsi_task *task)
1971 {
1972         struct ql4_task_data *task_data;
1973         struct iscsi_session *sess;
1974         struct ddb_entry *ddb_entry;
1975         struct scsi_qla_host *ha;
1976         int hdr_len;
1977
1978         hdr_len = sizeof(struct iscsi_hdr);
1979         sess = task->conn->session;
1980         ddb_entry = sess->dd_data;
1981         ha = ddb_entry->ha;
1982         task_data = task->dd_data;
1983
1984         if (task->data_count) {
1985                 dma_unmap_single(&ha->pdev->dev, task_data->data_dma,
1986                                  task->data_count, PCI_DMA_TODEVICE);
1987         }
1988
1989         DEBUG2(ql4_printk(KERN_INFO, ha, "%s: MaxRecvLen %u, iscsi hrd %d\n",
1990                       __func__, task->conn->max_recv_dlength, hdr_len));
1991
1992         dma_free_coherent(&ha->pdev->dev, task_data->resp_len,
1993                           task_data->resp_buffer, task_data->resp_dma);
1994         dma_free_coherent(&ha->pdev->dev, task_data->req_len,
1995                           task_data->req_buffer, task_data->req_dma);
1996         return;
1997 }
1998
1999 static int qla4xxx_task_xmit(struct iscsi_task *task)
2000 {
2001         struct scsi_cmnd *sc = task->sc;
2002         struct iscsi_session *sess = task->conn->session;
2003         struct ddb_entry *ddb_entry = sess->dd_data;
2004         struct scsi_qla_host *ha = ddb_entry->ha;
2005
2006         if (!sc)
2007                 return qla4xxx_send_passthru0(task);
2008
2009         ql4_printk(KERN_INFO, ha, "%s: scsi cmd xmit not implemented\n",
2010                    __func__);
2011         return -ENOSYS;
2012 }
2013
2014 static int qla4xxx_copy_from_fwddb_param(struct iscsi_bus_flash_session *sess,
2015                                          struct iscsi_bus_flash_conn *conn,
2016                                          struct dev_db_entry *fw_ddb_entry)
2017 {
2018         unsigned long options = 0;
2019         int rc = 0;
2020
2021         options = le16_to_cpu(fw_ddb_entry->options);
2022         conn->is_fw_assigned_ipv6 = test_bit(OPT_IS_FW_ASSIGNED_IPV6, &options);
2023         if (test_bit(OPT_IPV6_DEVICE, &options)) {
2024                 rc = iscsi_switch_str_param(&sess->portal_type,
2025                                             PORTAL_TYPE_IPV6);
2026                 if (rc)
2027                         goto exit_copy;
2028         } else {
2029                 rc = iscsi_switch_str_param(&sess->portal_type,
2030                                             PORTAL_TYPE_IPV4);
2031                 if (rc)
2032                         goto exit_copy;
2033         }
2034
2035         sess->auto_snd_tgt_disable = test_bit(OPT_AUTO_SENDTGTS_DISABLE,
2036                                               &options);
2037         sess->discovery_sess = test_bit(OPT_DISC_SESSION, &options);
2038         sess->entry_state = test_bit(OPT_ENTRY_STATE, &options);
2039
2040         options = le16_to_cpu(fw_ddb_entry->iscsi_options);
2041         conn->hdrdgst_en = test_bit(ISCSIOPT_HEADER_DIGEST_EN, &options);
2042         conn->datadgst_en = test_bit(ISCSIOPT_DATA_DIGEST_EN, &options);
2043         sess->imm_data_en = test_bit(ISCSIOPT_IMMEDIATE_DATA_EN, &options);
2044         sess->initial_r2t_en = test_bit(ISCSIOPT_INITIAL_R2T_EN, &options);
2045         sess->dataseq_inorder_en = test_bit(ISCSIOPT_DATA_SEQ_IN_ORDER,
2046                                             &options);
2047         sess->pdu_inorder_en = test_bit(ISCSIOPT_DATA_PDU_IN_ORDER, &options);
2048         sess->chap_auth_en = test_bit(ISCSIOPT_CHAP_AUTH_EN, &options);
2049         conn->snack_req_en = test_bit(ISCSIOPT_SNACK_REQ_EN, &options);
2050         sess->discovery_logout_en = test_bit(ISCSIOPT_DISCOVERY_LOGOUT_EN,
2051                                              &options);
2052         sess->bidi_chap_en = test_bit(ISCSIOPT_BIDI_CHAP_EN, &options);
2053         sess->discovery_auth_optional =
2054                         test_bit(ISCSIOPT_DISCOVERY_AUTH_OPTIONAL, &options);
2055         if (test_bit(ISCSIOPT_ERL1, &options))
2056                 sess->erl |= BIT_1;
2057         if (test_bit(ISCSIOPT_ERL0, &options))
2058                 sess->erl |= BIT_0;
2059
2060         options = le16_to_cpu(fw_ddb_entry->tcp_options);
2061         conn->tcp_timestamp_stat = test_bit(TCPOPT_TIMESTAMP_STAT, &options);
2062         conn->tcp_nagle_disable = test_bit(TCPOPT_NAGLE_DISABLE, &options);
2063         conn->tcp_wsf_disable = test_bit(TCPOPT_WSF_DISABLE, &options);
2064         if (test_bit(TCPOPT_TIMER_SCALE3, &options))
2065                 conn->tcp_timer_scale |= BIT_3;
2066         if (test_bit(TCPOPT_TIMER_SCALE2, &options))
2067                 conn->tcp_timer_scale |= BIT_2;
2068         if (test_bit(TCPOPT_TIMER_SCALE1, &options))
2069                 conn->tcp_timer_scale |= BIT_1;
2070
2071         conn->tcp_timer_scale >>= 1;
2072         conn->tcp_timestamp_en = test_bit(TCPOPT_TIMESTAMP_EN, &options);
2073
2074         options = le16_to_cpu(fw_ddb_entry->ip_options);
2075         conn->fragment_disable = test_bit(IPOPT_FRAGMENT_DISABLE, &options);
2076
2077         conn->max_recv_dlength = BYTE_UNITS *
2078                           le16_to_cpu(fw_ddb_entry->iscsi_max_rcv_data_seg_len);
2079         conn->max_xmit_dlength = BYTE_UNITS *
2080                           le16_to_cpu(fw_ddb_entry->iscsi_max_snd_data_seg_len);
2081         sess->first_burst = BYTE_UNITS *
2082                                le16_to_cpu(fw_ddb_entry->iscsi_first_burst_len);
2083         sess->max_burst = BYTE_UNITS *
2084                                  le16_to_cpu(fw_ddb_entry->iscsi_max_burst_len);
2085         sess->max_r2t = le16_to_cpu(fw_ddb_entry->iscsi_max_outsnd_r2t);
2086         sess->time2wait = le16_to_cpu(fw_ddb_entry->iscsi_def_time2wait);
2087         sess->time2retain = le16_to_cpu(fw_ddb_entry->iscsi_def_time2retain);
2088         sess->tpgt = le32_to_cpu(fw_ddb_entry->tgt_portal_grp);
2089         conn->max_segment_size = le16_to_cpu(fw_ddb_entry->mss);
2090         conn->tcp_xmit_wsf = fw_ddb_entry->tcp_xmt_wsf;
2091         conn->tcp_recv_wsf = fw_ddb_entry->tcp_rcv_wsf;
2092         conn->ipv6_flow_label = le16_to_cpu(fw_ddb_entry->ipv6_flow_lbl);
2093         conn->keepalive_timeout = le16_to_cpu(fw_ddb_entry->ka_timeout);
2094         conn->local_port = le16_to_cpu(fw_ddb_entry->lcl_port);
2095         conn->statsn = le32_to_cpu(fw_ddb_entry->stat_sn);
2096         conn->exp_statsn = le32_to_cpu(fw_ddb_entry->exp_stat_sn);
2097         sess->discovery_parent_idx = le16_to_cpu(fw_ddb_entry->ddb_link);
2098         sess->discovery_parent_type = le16_to_cpu(fw_ddb_entry->ddb_link);
2099         sess->chap_out_idx = le16_to_cpu(fw_ddb_entry->chap_tbl_idx);
2100         sess->tsid = le16_to_cpu(fw_ddb_entry->tsid);
2101
2102         sess->default_taskmgmt_timeout =
2103                                 le16_to_cpu(fw_ddb_entry->def_timeout);
2104         conn->port = le16_to_cpu(fw_ddb_entry->port);
2105
2106         options = le16_to_cpu(fw_ddb_entry->options);
2107         conn->ipaddress = kzalloc(IPv6_ADDR_LEN, GFP_KERNEL);
2108         if (!conn->ipaddress) {
2109                 rc = -ENOMEM;
2110                 goto exit_copy;
2111         }
2112
2113         conn->redirect_ipaddr = kzalloc(IPv6_ADDR_LEN, GFP_KERNEL);
2114         if (!conn->redirect_ipaddr) {
2115                 rc = -ENOMEM;
2116                 goto exit_copy;
2117         }
2118
2119         memcpy(conn->ipaddress, fw_ddb_entry->ip_addr, IPv6_ADDR_LEN);
2120         memcpy(conn->redirect_ipaddr, fw_ddb_entry->tgt_addr, IPv6_ADDR_LEN);
2121
2122         if (test_bit(OPT_IPV6_DEVICE, &options)) {
2123                 conn->ipv6_traffic_class = fw_ddb_entry->ipv4_tos;
2124
2125                 conn->link_local_ipv6_addr = kzalloc(IPv6_ADDR_LEN, GFP_KERNEL);
2126                 if (!conn->link_local_ipv6_addr) {
2127                         rc = -ENOMEM;
2128                         goto exit_copy;
2129                 }
2130
2131                 memcpy(conn->link_local_ipv6_addr,
2132                        fw_ddb_entry->link_local_ipv6_addr, IPv6_ADDR_LEN);
2133         } else {
2134                 conn->ipv4_tos = fw_ddb_entry->ipv4_tos;
2135         }
2136
2137         if (fw_ddb_entry->iscsi_name[0]) {
2138                 rc = iscsi_switch_str_param(&sess->targetname,
2139                                             (char *)fw_ddb_entry->iscsi_name);
2140                 if (rc)
2141                         goto exit_copy;
2142         }
2143
2144         if (fw_ddb_entry->iscsi_alias[0]) {
2145                 rc = iscsi_switch_str_param(&sess->targetalias,
2146                                             (char *)fw_ddb_entry->iscsi_alias);
2147                 if (rc)
2148                         goto exit_copy;
2149         }
2150
2151         COPY_ISID(sess->isid, fw_ddb_entry->isid);
2152
2153 exit_copy:
2154         return rc;
2155 }
2156
2157 static int qla4xxx_copy_to_fwddb_param(struct iscsi_bus_flash_session *sess,
2158                                        struct iscsi_bus_flash_conn *conn,
2159                                        struct dev_db_entry *fw_ddb_entry)
2160 {
2161         uint16_t options;
2162         int rc = 0;
2163
2164         options = le16_to_cpu(fw_ddb_entry->options);
2165         SET_BITVAL(conn->is_fw_assigned_ipv6,  options, BIT_11);
2166         if (!strncmp(sess->portal_type, PORTAL_TYPE_IPV6, 4))
2167                 options |= BIT_8;
2168         else
2169                 options &= ~BIT_8;
2170
2171         SET_BITVAL(sess->auto_snd_tgt_disable, options, BIT_6);
2172         SET_BITVAL(sess->discovery_sess, options, BIT_4);
2173         SET_BITVAL(sess->entry_state, options, BIT_3);
2174         fw_ddb_entry->options = cpu_to_le16(options);
2175
2176         options = le16_to_cpu(fw_ddb_entry->iscsi_options);
2177         SET_BITVAL(conn->hdrdgst_en, options, BIT_13);
2178         SET_BITVAL(conn->datadgst_en, options, BIT_12);
2179         SET_BITVAL(sess->imm_data_en, options, BIT_11);
2180         SET_BITVAL(sess->initial_r2t_en, options, BIT_10);
2181         SET_BITVAL(sess->dataseq_inorder_en, options, BIT_9);
2182         SET_BITVAL(sess->pdu_inorder_en, options, BIT_8);
2183         SET_BITVAL(sess->chap_auth_en, options, BIT_7);
2184         SET_BITVAL(conn->snack_req_en, options, BIT_6);
2185         SET_BITVAL(sess->discovery_logout_en, options, BIT_5);
2186         SET_BITVAL(sess->bidi_chap_en, options, BIT_4);
2187         SET_BITVAL(sess->discovery_auth_optional, options, BIT_3);
2188         SET_BITVAL(sess->erl & BIT_1, options, BIT_1);
2189         SET_BITVAL(sess->erl & BIT_0, options, BIT_0);
2190         fw_ddb_entry->iscsi_options = cpu_to_le16(options);
2191
2192         options = le16_to_cpu(fw_ddb_entry->tcp_options);
2193         SET_BITVAL(conn->tcp_timestamp_stat, options, BIT_6);
2194         SET_BITVAL(conn->tcp_nagle_disable, options, BIT_5);
2195         SET_BITVAL(conn->tcp_wsf_disable, options, BIT_4);
2196         SET_BITVAL(conn->tcp_timer_scale & BIT_2, options, BIT_3);
2197         SET_BITVAL(conn->tcp_timer_scale & BIT_1, options, BIT_2);
2198         SET_BITVAL(conn->tcp_timer_scale & BIT_0, options, BIT_1);
2199         SET_BITVAL(conn->tcp_timestamp_en, options, BIT_0);
2200         fw_ddb_entry->tcp_options = cpu_to_le16(options);
2201
2202         options = le16_to_cpu(fw_ddb_entry->ip_options);
2203         SET_BITVAL(conn->fragment_disable, options, BIT_4);
2204         fw_ddb_entry->ip_options = cpu_to_le16(options);
2205
2206         fw_ddb_entry->iscsi_max_outsnd_r2t = cpu_to_le16(sess->max_r2t);
2207         fw_ddb_entry->iscsi_max_rcv_data_seg_len =
2208                                cpu_to_le16(conn->max_recv_dlength / BYTE_UNITS);
2209         fw_ddb_entry->iscsi_max_snd_data_seg_len =
2210                                cpu_to_le16(conn->max_xmit_dlength / BYTE_UNITS);
2211         fw_ddb_entry->iscsi_first_burst_len =
2212                                 cpu_to_le16(sess->first_burst / BYTE_UNITS);
2213         fw_ddb_entry->iscsi_max_burst_len = cpu_to_le16(sess->max_burst /
2214                                             BYTE_UNITS);
2215         fw_ddb_entry->iscsi_def_time2wait = cpu_to_le16(sess->time2wait);
2216         fw_ddb_entry->iscsi_def_time2retain = cpu_to_le16(sess->time2retain);
2217         fw_ddb_entry->tgt_portal_grp = cpu_to_le16(sess->tpgt);
2218         fw_ddb_entry->mss = cpu_to_le16(conn->max_segment_size);
2219         fw_ddb_entry->tcp_xmt_wsf = (uint8_t) cpu_to_le32(conn->tcp_xmit_wsf);
2220         fw_ddb_entry->tcp_rcv_wsf = (uint8_t) cpu_to_le32(conn->tcp_recv_wsf);
2221         fw_ddb_entry->ipv4_tos = conn->ipv4_tos;
2222         fw_ddb_entry->ipv6_flow_lbl = cpu_to_le16(conn->ipv6_flow_label);
2223         fw_ddb_entry->ka_timeout = cpu_to_le16(conn->keepalive_timeout);
2224         fw_ddb_entry->lcl_port = cpu_to_le16(conn->local_port);
2225         fw_ddb_entry->stat_sn = cpu_to_le32(conn->statsn);
2226         fw_ddb_entry->exp_stat_sn = cpu_to_le32(conn->exp_statsn);
2227         fw_ddb_entry->ddb_link = cpu_to_le16(sess->discovery_parent_type);
2228         fw_ddb_entry->chap_tbl_idx = cpu_to_le16(sess->chap_out_idx);
2229         fw_ddb_entry->tsid = cpu_to_le16(sess->tsid);
2230         fw_ddb_entry->port = cpu_to_le16(conn->port);
2231         fw_ddb_entry->def_timeout =
2232                                 cpu_to_le16(sess->default_taskmgmt_timeout);
2233
2234         if (conn->ipaddress)
2235                 memcpy(fw_ddb_entry->ip_addr, conn->ipaddress,
2236                        sizeof(fw_ddb_entry->ip_addr));
2237
2238         if (conn->redirect_ipaddr)
2239                 memcpy(fw_ddb_entry->tgt_addr, conn->redirect_ipaddr,
2240                        sizeof(fw_ddb_entry->tgt_addr));
2241
2242         if (conn->link_local_ipv6_addr)
2243                 memcpy(fw_ddb_entry->link_local_ipv6_addr,
2244                        conn->link_local_ipv6_addr,
2245                        sizeof(fw_ddb_entry->link_local_ipv6_addr));
2246
2247         if (sess->targetname)
2248                 memcpy(fw_ddb_entry->iscsi_name, sess->targetname,
2249                        sizeof(fw_ddb_entry->iscsi_name));
2250
2251         if (sess->targetalias)
2252                 memcpy(fw_ddb_entry->iscsi_alias, sess->targetalias,
2253                        sizeof(fw_ddb_entry->iscsi_alias));
2254
2255         COPY_ISID(fw_ddb_entry->isid, sess->isid);
2256
2257         return rc;
2258 }
2259
2260 static void qla4xxx_copy_fwddb_param(struct scsi_qla_host *ha,
2261                                      struct dev_db_entry *fw_ddb_entry,
2262                                      struct iscsi_cls_session *cls_sess,
2263                                      struct iscsi_cls_conn *cls_conn)
2264 {
2265         int buflen = 0;
2266         struct iscsi_session *sess;
2267         struct ddb_entry *ddb_entry;
2268         struct iscsi_conn *conn;
2269         char ip_addr[DDB_IPADDR_LEN];
2270         uint16_t options = 0;
2271
2272         sess = cls_sess->dd_data;
2273         ddb_entry = sess->dd_data;
2274         conn = cls_conn->dd_data;
2275
2276         ddb_entry->chap_tbl_idx = le16_to_cpu(fw_ddb_entry->chap_tbl_idx);
2277
2278         conn->max_recv_dlength = BYTE_UNITS *
2279                           le16_to_cpu(fw_ddb_entry->iscsi_max_rcv_data_seg_len);
2280
2281         conn->max_xmit_dlength = BYTE_UNITS *
2282                           le16_to_cpu(fw_ddb_entry->iscsi_max_snd_data_seg_len);
2283
2284         sess->initial_r2t_en =
2285                             (BIT_10 & le16_to_cpu(fw_ddb_entry->iscsi_options));
2286
2287         sess->max_r2t = le16_to_cpu(fw_ddb_entry->iscsi_max_outsnd_r2t);
2288
2289         sess->imm_data_en = (BIT_11 & le16_to_cpu(fw_ddb_entry->iscsi_options));
2290
2291         sess->first_burst = BYTE_UNITS *
2292                                le16_to_cpu(fw_ddb_entry->iscsi_first_burst_len);
2293
2294         sess->max_burst = BYTE_UNITS *
2295                                  le16_to_cpu(fw_ddb_entry->iscsi_max_burst_len);
2296
2297         sess->time2wait = le16_to_cpu(fw_ddb_entry->iscsi_def_time2wait);
2298
2299         sess->time2retain = le16_to_cpu(fw_ddb_entry->iscsi_def_time2retain);
2300
2301         conn->persistent_port = le16_to_cpu(fw_ddb_entry->port);
2302
2303         sess->tpgt = le32_to_cpu(fw_ddb_entry->tgt_portal_grp);
2304
2305         options = le16_to_cpu(fw_ddb_entry->options);
2306         if (options & DDB_OPT_IPV6_DEVICE)
2307                 sprintf(ip_addr, "%pI6", fw_ddb_entry->ip_addr);
2308         else
2309                 sprintf(ip_addr, "%pI4", fw_ddb_entry->ip_addr);
2310
2311         iscsi_set_param(cls_conn, ISCSI_PARAM_TARGET_NAME,
2312                         (char *)fw_ddb_entry->iscsi_name, buflen);
2313         iscsi_set_param(cls_conn, ISCSI_PARAM_INITIATOR_NAME,
2314                         (char *)ha->name_string, buflen);
2315         iscsi_set_param(cls_conn, ISCSI_PARAM_PERSISTENT_ADDRESS,
2316                         (char *)ip_addr, buflen);
2317         iscsi_set_param(cls_conn, ISCSI_PARAM_TARGET_ALIAS,
2318                         (char *)fw_ddb_entry->iscsi_alias, buflen);
2319 }
2320
2321 void qla4xxx_update_session_conn_fwddb_param(struct scsi_qla_host *ha,
2322                                              struct ddb_entry *ddb_entry)
2323 {
2324         struct iscsi_cls_session *cls_sess;
2325         struct iscsi_cls_conn *cls_conn;
2326         uint32_t ddb_state;
2327         dma_addr_t fw_ddb_entry_dma;
2328         struct dev_db_entry *fw_ddb_entry;
2329
2330         fw_ddb_entry = dma_alloc_coherent(&ha->pdev->dev, sizeof(*fw_ddb_entry),
2331                                           &fw_ddb_entry_dma, GFP_KERNEL);
2332         if (!fw_ddb_entry) {
2333                 ql4_printk(KERN_ERR, ha,
2334                            "%s: Unable to allocate dma buffer\n", __func__);
2335                 goto exit_session_conn_fwddb_param;
2336         }
2337
2338         if (qla4xxx_get_fwddb_entry(ha, ddb_entry->fw_ddb_index, fw_ddb_entry,
2339                                     fw_ddb_entry_dma, NULL, NULL, &ddb_state,
2340                                     NULL, NULL, NULL) == QLA_ERROR) {
2341                 DEBUG2(ql4_printk(KERN_ERR, ha, "scsi%ld: %s: failed "
2342                                   "get_ddb_entry for fw_ddb_index %d\n",
2343                                   ha->host_no, __func__,
2344                                   ddb_entry->fw_ddb_index));
2345                 goto exit_session_conn_fwddb_param;
2346         }
2347
2348         cls_sess = ddb_entry->sess;
2349
2350         cls_conn = ddb_entry->conn;
2351
2352         /* Update params */
2353         qla4xxx_copy_fwddb_param(ha, fw_ddb_entry, cls_sess, cls_conn);
2354
2355 exit_session_conn_fwddb_param:
2356         if (fw_ddb_entry)
2357                 dma_free_coherent(&ha->pdev->dev, sizeof(*fw_ddb_entry),
2358                                   fw_ddb_entry, fw_ddb_entry_dma);
2359 }
2360
2361 void qla4xxx_update_session_conn_param(struct scsi_qla_host *ha,
2362                                        struct ddb_entry *ddb_entry)
2363 {
2364         struct iscsi_cls_session *cls_sess;
2365         struct iscsi_cls_conn *cls_conn;
2366         struct iscsi_session *sess;
2367         struct iscsi_conn *conn;
2368         uint32_t ddb_state;
2369         dma_addr_t fw_ddb_entry_dma;
2370         struct dev_db_entry *fw_ddb_entry;
2371
2372         fw_ddb_entry = dma_alloc_coherent(&ha->pdev->dev, sizeof(*fw_ddb_entry),
2373                                           &fw_ddb_entry_dma, GFP_KERNEL);
2374         if (!fw_ddb_entry) {
2375                 ql4_printk(KERN_ERR, ha,
2376                            "%s: Unable to allocate dma buffer\n", __func__);
2377                 goto exit_session_conn_param;
2378         }
2379
2380         if (qla4xxx_get_fwddb_entry(ha, ddb_entry->fw_ddb_index, fw_ddb_entry,
2381                                     fw_ddb_entry_dma, NULL, NULL, &ddb_state,
2382                                     NULL, NULL, NULL) == QLA_ERROR) {
2383                 DEBUG2(ql4_printk(KERN_ERR, ha, "scsi%ld: %s: failed "
2384                                   "get_ddb_entry for fw_ddb_index %d\n",
2385                                   ha->host_no, __func__,
2386                                   ddb_entry->fw_ddb_index));
2387                 goto exit_session_conn_param;
2388         }
2389
2390         cls_sess = ddb_entry->sess;
2391         sess = cls_sess->dd_data;
2392
2393         cls_conn = ddb_entry->conn;
2394         conn = cls_conn->dd_data;
2395
2396         /* Update timers after login */
2397         ddb_entry->default_relogin_timeout =
2398                 (le16_to_cpu(fw_ddb_entry->def_timeout) > LOGIN_TOV) &&
2399                  (le16_to_cpu(fw_ddb_entry->def_timeout) < LOGIN_TOV * 10) ?
2400                  le16_to_cpu(fw_ddb_entry->def_timeout) : LOGIN_TOV;
2401         ddb_entry->default_time2wait =
2402                                 le16_to_cpu(fw_ddb_entry->iscsi_def_time2wait);
2403
2404         /* Update params */
2405         ddb_entry->chap_tbl_idx = le16_to_cpu(fw_ddb_entry->chap_tbl_idx);
2406         conn->max_recv_dlength = BYTE_UNITS *
2407                           le16_to_cpu(fw_ddb_entry->iscsi_max_rcv_data_seg_len);
2408
2409         conn->max_xmit_dlength = BYTE_UNITS *
2410                           le16_to_cpu(fw_ddb_entry->iscsi_max_snd_data_seg_len);
2411
2412         sess->initial_r2t_en =
2413                             (BIT_10 & le16_to_cpu(fw_ddb_entry->iscsi_options));
2414
2415         sess->max_r2t = le16_to_cpu(fw_ddb_entry->iscsi_max_outsnd_r2t);
2416
2417         sess->imm_data_en = (BIT_11 & le16_to_cpu(fw_ddb_entry->iscsi_options));
2418
2419         sess->first_burst = BYTE_UNITS *
2420                                le16_to_cpu(fw_ddb_entry->iscsi_first_burst_len);
2421
2422         sess->max_burst = BYTE_UNITS *
2423                                  le16_to_cpu(fw_ddb_entry->iscsi_max_burst_len);
2424
2425         sess->time2wait = le16_to_cpu(fw_ddb_entry->iscsi_def_time2wait);
2426
2427         sess->time2retain = le16_to_cpu(fw_ddb_entry->iscsi_def_time2retain);
2428
2429         sess->tpgt = le32_to_cpu(fw_ddb_entry->tgt_portal_grp);
2430
2431         memcpy(sess->initiatorname, ha->name_string,
2432                min(sizeof(ha->name_string), sizeof(sess->initiatorname)));
2433
2434         iscsi_set_param(cls_conn, ISCSI_PARAM_TARGET_ALIAS,
2435                         (char *)fw_ddb_entry->iscsi_alias, 0);
2436
2437 exit_session_conn_param:
2438         if (fw_ddb_entry)
2439                 dma_free_coherent(&ha->pdev->dev, sizeof(*fw_ddb_entry),
2440                                   fw_ddb_entry, fw_ddb_entry_dma);
2441 }
2442
2443 /*
2444  * Timer routines
2445  */
2446
2447 static void qla4xxx_start_timer(struct scsi_qla_host *ha, void *func,
2448                                 unsigned long interval)
2449 {
2450         DEBUG(printk("scsi: %s: Starting timer thread for adapter %d\n",
2451                      __func__, ha->host->host_no));
2452         init_timer(&ha->timer);
2453         ha->timer.expires = jiffies + interval * HZ;
2454         ha->timer.data = (unsigned long)ha;
2455         ha->timer.function = (void (*)(unsigned long))func;
2456         add_timer(&ha->timer);
2457         ha->timer_active = 1;
2458 }
2459
2460 static void qla4xxx_stop_timer(struct scsi_qla_host *ha)
2461 {
2462         del_timer_sync(&ha->timer);
2463         ha->timer_active = 0;
2464 }
2465
2466 /***
2467  * qla4xxx_mark_device_missing - blocks the session
2468  * @cls_session: Pointer to the session to be blocked
2469  * @ddb_entry: Pointer to device database entry
2470  *
2471  * This routine marks a device missing and close connection.
2472  **/
2473 void qla4xxx_mark_device_missing(struct iscsi_cls_session *cls_session)
2474 {
2475         iscsi_block_session(cls_session);
2476 }
2477
2478 /**
2479  * qla4xxx_mark_all_devices_missing - mark all devices as missing.
2480  * @ha: Pointer to host adapter structure.
2481  *
2482  * This routine marks a device missing and resets the relogin retry count.
2483  **/
2484 void qla4xxx_mark_all_devices_missing(struct scsi_qla_host *ha)
2485 {
2486         iscsi_host_for_each_session(ha->host, qla4xxx_mark_device_missing);
2487 }
2488
2489 static struct srb* qla4xxx_get_new_srb(struct scsi_qla_host *ha,
2490                                        struct ddb_entry *ddb_entry,
2491                                        struct scsi_cmnd *cmd)
2492 {
2493         struct srb *srb;
2494
2495         srb = mempool_alloc(ha->srb_mempool, GFP_ATOMIC);
2496         if (!srb)
2497                 return srb;
2498
2499         kref_init(&srb->srb_ref);
2500         srb->ha = ha;
2501         srb->ddb = ddb_entry;
2502         srb->cmd = cmd;
2503         srb->flags = 0;
2504         CMD_SP(cmd) = (void *)srb;
2505
2506         return srb;
2507 }
2508
2509 static void qla4xxx_srb_free_dma(struct scsi_qla_host *ha, struct srb *srb)
2510 {
2511         struct scsi_cmnd *cmd = srb->cmd;
2512
2513         if (srb->flags & SRB_DMA_VALID) {
2514                 scsi_dma_unmap(cmd);
2515                 srb->flags &= ~SRB_DMA_VALID;
2516         }
2517         CMD_SP(cmd) = NULL;
2518 }
2519
2520 void qla4xxx_srb_compl(struct kref *ref)
2521 {
2522         struct srb *srb = container_of(ref, struct srb, srb_ref);
2523         struct scsi_cmnd *cmd = srb->cmd;
2524         struct scsi_qla_host *ha = srb->ha;
2525
2526         qla4xxx_srb_free_dma(ha, srb);
2527
2528         mempool_free(srb, ha->srb_mempool);
2529
2530         cmd->scsi_done(cmd);
2531 }
2532
2533 /**
2534  * qla4xxx_queuecommand - scsi layer issues scsi command to driver.
2535  * @host: scsi host
2536  * @cmd: Pointer to Linux's SCSI command structure
2537  *
2538  * Remarks:
2539  * This routine is invoked by Linux to send a SCSI command to the driver.
2540  * The mid-level driver tries to ensure that queuecommand never gets
2541  * invoked concurrently with itself or the interrupt handler (although
2542  * the interrupt handler may call this routine as part of request-
2543  * completion handling).   Unfortunely, it sometimes calls the scheduler
2544  * in interrupt context which is a big NO! NO!.
2545  **/
2546 static int qla4xxx_queuecommand(struct Scsi_Host *host, struct scsi_cmnd *cmd)
2547 {
2548         struct scsi_qla_host *ha = to_qla_host(host);
2549         struct ddb_entry *ddb_entry = cmd->device->hostdata;
2550         struct iscsi_cls_session *sess = ddb_entry->sess;
2551         struct srb *srb;
2552         int rval;
2553
2554         if (test_bit(AF_EEH_BUSY, &ha->flags)) {
2555                 if (test_bit(AF_PCI_CHANNEL_IO_PERM_FAILURE, &ha->flags))
2556                         cmd->result = DID_NO_CONNECT << 16;
2557                 else
2558                         cmd->result = DID_REQUEUE << 16;
2559                 goto qc_fail_command;
2560         }
2561
2562         if (!sess) {
2563                 cmd->result = DID_IMM_RETRY << 16;
2564                 goto qc_fail_command;
2565         }
2566
2567         rval = iscsi_session_chkready(sess);
2568         if (rval) {
2569                 cmd->result = rval;
2570                 goto qc_fail_command;
2571         }
2572
2573         if (test_bit(DPC_RESET_HA_INTR, &ha->dpc_flags) ||
2574             test_bit(DPC_RESET_ACTIVE, &ha->dpc_flags) ||
2575             test_bit(DPC_RESET_HA, &ha->dpc_flags) ||
2576             test_bit(DPC_HA_UNRECOVERABLE, &ha->dpc_flags) ||
2577             test_bit(DPC_HA_NEED_QUIESCENT, &ha->dpc_flags) ||
2578             !test_bit(AF_ONLINE, &ha->flags) ||
2579             !test_bit(AF_LINK_UP, &ha->flags) ||
2580             test_bit(AF_LOOPBACK, &ha->flags) ||
2581             test_bit(DPC_RESET_HA_FW_CONTEXT, &ha->dpc_flags))
2582                 goto qc_host_busy;
2583
2584         srb = qla4xxx_get_new_srb(ha, ddb_entry, cmd);
2585         if (!srb)
2586                 goto qc_host_busy;
2587
2588         rval = qla4xxx_send_command_to_isp(ha, srb);
2589         if (rval != QLA_SUCCESS)
2590                 goto qc_host_busy_free_sp;
2591
2592         return 0;
2593
2594 qc_host_busy_free_sp:
2595         qla4xxx_srb_free_dma(ha, srb);
2596         mempool_free(srb, ha->srb_mempool);
2597
2598 qc_host_busy:
2599         return SCSI_MLQUEUE_HOST_BUSY;
2600
2601 qc_fail_command:
2602         cmd->scsi_done(cmd);
2603
2604         return 0;
2605 }
2606
2607 /**
2608  * qla4xxx_mem_free - frees memory allocated to adapter
2609  * @ha: Pointer to host adapter structure.
2610  *
2611  * Frees memory previously allocated by qla4xxx_mem_alloc
2612  **/
2613 static void qla4xxx_mem_free(struct scsi_qla_host *ha)
2614 {
2615         if (ha->queues)
2616                 dma_free_coherent(&ha->pdev->dev, ha->queues_len, ha->queues,
2617                                   ha->queues_dma);
2618
2619          if (ha->fw_dump)
2620                 vfree(ha->fw_dump);
2621
2622         ha->queues_len = 0;
2623         ha->queues = NULL;
2624         ha->queues_dma = 0;
2625         ha->request_ring = NULL;
2626         ha->request_dma = 0;
2627         ha->response_ring = NULL;
2628         ha->response_dma = 0;
2629         ha->shadow_regs = NULL;
2630         ha->shadow_regs_dma = 0;
2631         ha->fw_dump = NULL;
2632         ha->fw_dump_size = 0;
2633
2634         /* Free srb pool. */
2635         if (ha->srb_mempool)
2636                 mempool_destroy(ha->srb_mempool);
2637
2638         ha->srb_mempool = NULL;
2639
2640         if (ha->chap_dma_pool)
2641                 dma_pool_destroy(ha->chap_dma_pool);
2642
2643         if (ha->chap_list)
2644                 vfree(ha->chap_list);
2645         ha->chap_list = NULL;
2646
2647         if (ha->fw_ddb_dma_pool)
2648                 dma_pool_destroy(ha->fw_ddb_dma_pool);
2649
2650         /* release io space registers  */
2651         if (is_qla8022(ha)) {
2652                 if (ha->nx_pcibase)
2653                         iounmap(
2654                             (struct device_reg_82xx __iomem *)ha->nx_pcibase);
2655         } else if (is_qla8032(ha)) {
2656                 if (ha->nx_pcibase)
2657                         iounmap(
2658                             (struct device_reg_83xx __iomem *)ha->nx_pcibase);
2659         } else if (ha->reg) {
2660                 iounmap(ha->reg);
2661         }
2662
2663         if (ha->reset_tmplt.buff)
2664                 vfree(ha->reset_tmplt.buff);
2665
2666         pci_release_regions(ha->pdev);
2667 }
2668
2669 /**
2670  * qla4xxx_mem_alloc - allocates memory for use by adapter.
2671  * @ha: Pointer to host adapter structure
2672  *
2673  * Allocates DMA memory for request and response queues. Also allocates memory
2674  * for srbs.
2675  **/
2676 static int qla4xxx_mem_alloc(struct scsi_qla_host *ha)
2677 {
2678         unsigned long align;
2679
2680         /* Allocate contiguous block of DMA memory for queues. */
2681         ha->queues_len = ((REQUEST_QUEUE_DEPTH * QUEUE_SIZE) +
2682                           (RESPONSE_QUEUE_DEPTH * QUEUE_SIZE) +
2683                           sizeof(struct shadow_regs) +
2684                           MEM_ALIGN_VALUE +
2685                           (PAGE_SIZE - 1)) & ~(PAGE_SIZE - 1);
2686         ha->queues = dma_alloc_coherent(&ha->pdev->dev, ha->queues_len,
2687                                         &ha->queues_dma, GFP_KERNEL);
2688         if (ha->queues == NULL) {
2689                 ql4_printk(KERN_WARNING, ha,
2690                     "Memory Allocation failed - queues.\n");
2691
2692                 goto mem_alloc_error_exit;
2693         }
2694         memset(ha->queues, 0, ha->queues_len);
2695
2696         /*
2697          * As per RISC alignment requirements -- the bus-address must be a
2698          * multiple of the request-ring size (in bytes).
2699          */
2700         align = 0;
2701         if ((unsigned long)ha->queues_dma & (MEM_ALIGN_VALUE - 1))
2702                 align = MEM_ALIGN_VALUE - ((unsigned long)ha->queues_dma &
2703                                            (MEM_ALIGN_VALUE - 1));
2704
2705         /* Update request and response queue pointers. */
2706         ha->request_dma = ha->queues_dma + align;
2707         ha->request_ring = (struct queue_entry *) (ha->queues + align);
2708         ha->response_dma = ha->queues_dma + align +
2709                 (REQUEST_QUEUE_DEPTH * QUEUE_SIZE);
2710         ha->response_ring = (struct queue_entry *) (ha->queues + align +
2711                                                     (REQUEST_QUEUE_DEPTH *
2712                                                      QUEUE_SIZE));
2713         ha->shadow_regs_dma = ha->queues_dma + align +
2714                 (REQUEST_QUEUE_DEPTH * QUEUE_SIZE) +
2715                 (RESPONSE_QUEUE_DEPTH * QUEUE_SIZE);
2716         ha->shadow_regs = (struct shadow_regs *) (ha->queues + align +
2717                                                   (REQUEST_QUEUE_DEPTH *
2718                                                    QUEUE_SIZE) +
2719                                                   (RESPONSE_QUEUE_DEPTH *
2720                                                    QUEUE_SIZE));
2721
2722         /* Allocate memory for srb pool. */
2723         ha->srb_mempool = mempool_create(SRB_MIN_REQ, mempool_alloc_slab,
2724                                          mempool_free_slab, srb_cachep);
2725         if (ha->srb_mempool == NULL) {
2726                 ql4_printk(KERN_WARNING, ha,
2727                     "Memory Allocation failed - SRB Pool.\n");
2728
2729                 goto mem_alloc_error_exit;
2730         }
2731
2732         ha->chap_dma_pool = dma_pool_create("ql4_chap", &ha->pdev->dev,
2733                                             CHAP_DMA_BLOCK_SIZE, 8, 0);
2734
2735         if (ha->chap_dma_pool == NULL) {
2736                 ql4_printk(KERN_WARNING, ha,
2737                     "%s: chap_dma_pool allocation failed..\n", __func__);
2738                 goto mem_alloc_error_exit;
2739         }
2740
2741         ha->fw_ddb_dma_pool = dma_pool_create("ql4_fw_ddb", &ha->pdev->dev,
2742                                               DDB_DMA_BLOCK_SIZE, 8, 0);
2743
2744         if (ha->fw_ddb_dma_pool == NULL) {
2745                 ql4_printk(KERN_WARNING, ha,
2746                            "%s: fw_ddb_dma_pool allocation failed..\n",
2747                            __func__);
2748                 goto mem_alloc_error_exit;
2749         }
2750
2751         return QLA_SUCCESS;
2752
2753 mem_alloc_error_exit:
2754         qla4xxx_mem_free(ha);
2755         return QLA_ERROR;
2756 }
2757
2758 /**
2759  * qla4_8xxx_check_temp - Check the ISP82XX temperature.
2760  * @ha: adapter block pointer.
2761  *
2762  * Note: The caller should not hold the idc lock.
2763  **/
2764 static int qla4_8xxx_check_temp(struct scsi_qla_host *ha)
2765 {
2766         uint32_t temp, temp_state, temp_val;
2767         int status = QLA_SUCCESS;
2768
2769         temp = qla4_8xxx_rd_direct(ha, QLA8XXX_CRB_TEMP_STATE);
2770
2771         temp_state = qla82xx_get_temp_state(temp);
2772         temp_val = qla82xx_get_temp_val(temp);
2773
2774         if (temp_state == QLA82XX_TEMP_PANIC) {
2775                 ql4_printk(KERN_WARNING, ha, "Device temperature %d degrees C"
2776                            " exceeds maximum allowed. Hardware has been shut"
2777                            " down.\n", temp_val);
2778                 status = QLA_ERROR;
2779         } else if (temp_state == QLA82XX_TEMP_WARN) {
2780                 if (ha->temperature == QLA82XX_TEMP_NORMAL)
2781                         ql4_printk(KERN_WARNING, ha, "Device temperature %d"
2782                                    " degrees C exceeds operating range."
2783                                    " Immediate action needed.\n", temp_val);
2784         } else {
2785                 if (ha->temperature == QLA82XX_TEMP_WARN)
2786                         ql4_printk(KERN_INFO, ha, "Device temperature is"
2787                                    " now %d degrees C in normal range.\n",
2788                                    temp_val);
2789         }
2790         ha->temperature = temp_state;
2791         return status;
2792 }
2793
2794 /**
2795  * qla4_8xxx_check_fw_alive  - Check firmware health
2796  * @ha: Pointer to host adapter structure.
2797  *
2798  * Context: Interrupt
2799  **/
2800 static int qla4_8xxx_check_fw_alive(struct scsi_qla_host *ha)
2801 {
2802         uint32_t fw_heartbeat_counter;
2803         int status = QLA_SUCCESS;
2804
2805         fw_heartbeat_counter = qla4_8xxx_rd_direct(ha,
2806                                                    QLA8XXX_PEG_ALIVE_COUNTER);
2807         /* If PEG_ALIVE_COUNTER is 0xffffffff, AER/EEH is in progress, ignore */
2808         if (fw_heartbeat_counter == 0xffffffff) {
2809                 DEBUG2(printk(KERN_WARNING "scsi%ld: %s: Device in frozen "
2810                     "state, QLA82XX_PEG_ALIVE_COUNTER is 0xffffffff\n",
2811                     ha->host_no, __func__));
2812                 return status;
2813         }
2814
2815         if (ha->fw_heartbeat_counter == fw_heartbeat_counter) {
2816                 ha->seconds_since_last_heartbeat++;
2817                 /* FW not alive after 2 seconds */
2818                 if (ha->seconds_since_last_heartbeat == 2) {
2819                         ha->seconds_since_last_heartbeat = 0;
2820                         qla4_8xxx_dump_peg_reg(ha);
2821                         status = QLA_ERROR;
2822                 }
2823         } else
2824                 ha->seconds_since_last_heartbeat = 0;
2825
2826         ha->fw_heartbeat_counter = fw_heartbeat_counter;
2827         return status;
2828 }
2829
2830 static void qla4_8xxx_process_fw_error(struct scsi_qla_host *ha)
2831 {
2832         uint32_t halt_status;
2833         int halt_status_unrecoverable = 0;
2834
2835         halt_status = qla4_8xxx_rd_direct(ha, QLA8XXX_PEG_HALT_STATUS1);
2836
2837         if (is_qla8022(ha)) {
2838                 ql4_printk(KERN_INFO, ha, "%s: disabling pause transmit on port 0 & 1.\n",
2839                            __func__);
2840                 qla4_82xx_wr_32(ha, QLA82XX_CRB_NIU + 0x98,
2841                                 CRB_NIU_XG_PAUSE_CTL_P0 |
2842                                 CRB_NIU_XG_PAUSE_CTL_P1);
2843
2844                 if (QLA82XX_FWERROR_CODE(halt_status) == 0x67)
2845                         ql4_printk(KERN_ERR, ha, "%s: Firmware aborted with error code 0x00006700. Device is being reset\n",
2846                                    __func__);
2847                 if (halt_status & HALT_STATUS_UNRECOVERABLE)
2848                         halt_status_unrecoverable = 1;
2849         } else if (is_qla8032(ha)) {
2850                 if (halt_status & QLA83XX_HALT_STATUS_FW_RESET)
2851                         ql4_printk(KERN_ERR, ha, "%s: Firmware error detected device is being reset\n",
2852                                    __func__);
2853                 else if (halt_status & QLA83XX_HALT_STATUS_UNRECOVERABLE)
2854                         halt_status_unrecoverable = 1;
2855         }
2856
2857         /*
2858          * Since we cannot change dev_state in interrupt context,
2859          * set appropriate DPC flag then wakeup DPC
2860          */
2861         if (halt_status_unrecoverable) {
2862                 set_bit(DPC_HA_UNRECOVERABLE, &ha->dpc_flags);
2863         } else {
2864                 ql4_printk(KERN_INFO, ha, "%s: detect abort needed!\n",
2865                            __func__);
2866                 set_bit(DPC_RESET_HA, &ha->dpc_flags);
2867         }
2868         qla4xxx_mailbox_premature_completion(ha);
2869         qla4xxx_wake_dpc(ha);
2870 }
2871
2872 /**
2873  * qla4_8xxx_watchdog - Poll dev state
2874  * @ha: Pointer to host adapter structure.
2875  *
2876  * Context: Interrupt
2877  **/
2878 void qla4_8xxx_watchdog(struct scsi_qla_host *ha)
2879 {
2880         uint32_t dev_state;
2881         uint32_t idc_ctrl;
2882
2883         /* don't poll if reset is going on */
2884         if (!(test_bit(DPC_RESET_ACTIVE, &ha->dpc_flags) ||
2885             test_bit(DPC_RESET_HA, &ha->dpc_flags) ||
2886             test_bit(DPC_RETRY_RESET_HA, &ha->dpc_flags))) {
2887                 dev_state = qla4_8xxx_rd_direct(ha, QLA8XXX_CRB_DEV_STATE);
2888
2889                 if (qla4_8xxx_check_temp(ha)) {
2890                         if (is_qla8022(ha)) {
2891                                 ql4_printk(KERN_INFO, ha, "disabling pause transmit on port 0 & 1.\n");
2892                                 qla4_82xx_wr_32(ha, QLA82XX_CRB_NIU + 0x98,
2893                                                 CRB_NIU_XG_PAUSE_CTL_P0 |
2894                                                 CRB_NIU_XG_PAUSE_CTL_P1);
2895                         }
2896                         set_bit(DPC_HA_UNRECOVERABLE, &ha->dpc_flags);
2897                         qla4xxx_wake_dpc(ha);
2898                 } else if (dev_state == QLA8XXX_DEV_NEED_RESET &&
2899                            !test_bit(DPC_RESET_HA, &ha->dpc_flags)) {
2900
2901                         ql4_printk(KERN_INFO, ha, "%s: HW State: NEED RESET!\n",
2902                                    __func__);
2903
2904                         if (is_qla8032(ha)) {
2905                                 idc_ctrl = qla4_83xx_rd_reg(ha,
2906                                                         QLA83XX_IDC_DRV_CTRL);
2907                                 if (!(idc_ctrl & GRACEFUL_RESET_BIT1)) {
2908                                         ql4_printk(KERN_INFO, ha, "%s: Graceful reset bit is not set\n",
2909                                                    __func__);
2910                                         qla4xxx_mailbox_premature_completion(
2911                                                                             ha);
2912                                 }
2913                         }
2914
2915                         if (is_qla8032(ha) ||
2916                             (is_qla8022(ha) && !ql4xdontresethba)) {
2917                                 set_bit(DPC_RESET_HA, &ha->dpc_flags);
2918                                 qla4xxx_wake_dpc(ha);
2919                         }
2920                 } else if (dev_state == QLA8XXX_DEV_NEED_QUIESCENT &&
2921                     !test_bit(DPC_HA_NEED_QUIESCENT, &ha->dpc_flags)) {
2922                         ql4_printk(KERN_INFO, ha, "%s: HW State: NEED QUIES!\n",
2923                             __func__);
2924                         set_bit(DPC_HA_NEED_QUIESCENT, &ha->dpc_flags);
2925                         qla4xxx_wake_dpc(ha);
2926                 } else  {
2927                         /* Check firmware health */
2928                         if (qla4_8xxx_check_fw_alive(ha))
2929                                 qla4_8xxx_process_fw_error(ha);
2930                 }
2931         }
2932 }
2933
2934 static void qla4xxx_check_relogin_flash_ddb(struct iscsi_cls_session *cls_sess)
2935 {
2936         struct iscsi_session *sess;
2937         struct ddb_entry *ddb_entry;
2938         struct scsi_qla_host *ha;
2939
2940         sess = cls_sess->dd_data;
2941         ddb_entry = sess->dd_data;
2942         ha = ddb_entry->ha;
2943
2944         if (!(ddb_entry->ddb_type == FLASH_DDB))
2945                 return;
2946
2947         if (adapter_up(ha) && !test_bit(DF_RELOGIN, &ddb_entry->flags) &&
2948             !iscsi_is_session_online(cls_sess)) {
2949                 if (atomic_read(&ddb_entry->retry_relogin_timer) !=
2950                     INVALID_ENTRY) {
2951                         if (atomic_read(&ddb_entry->retry_relogin_timer) ==
2952                                         0) {
2953                                 atomic_set(&ddb_entry->retry_relogin_timer,
2954                                            INVALID_ENTRY);
2955                                 set_bit(DPC_RELOGIN_DEVICE, &ha->dpc_flags);
2956                                 set_bit(DF_RELOGIN, &ddb_entry->flags);
2957                                 DEBUG2(ql4_printk(KERN_INFO, ha,
2958                                        "%s: index [%d] login device\n",
2959                                         __func__, ddb_entry->fw_ddb_index));
2960                         } else
2961                                 atomic_dec(&ddb_entry->retry_relogin_timer);
2962                 }
2963         }
2964
2965         /* Wait for relogin to timeout */
2966         if (atomic_read(&ddb_entry->relogin_timer) &&
2967             (atomic_dec_and_test(&ddb_entry->relogin_timer) != 0)) {
2968                 /*
2969                  * If the relogin times out and the device is
2970                  * still NOT ONLINE then try and relogin again.
2971                  */
2972                 if (!iscsi_is_session_online(cls_sess)) {
2973                         /* Reset retry relogin timer */
2974                         atomic_inc(&ddb_entry->relogin_retry_count);
2975                         DEBUG2(ql4_printk(KERN_INFO, ha,
2976                                 "%s: index[%d] relogin timed out-retrying"
2977                                 " relogin (%d), retry (%d)\n", __func__,
2978                                 ddb_entry->fw_ddb_index,
2979                                 atomic_read(&ddb_entry->relogin_retry_count),
2980                                 ddb_entry->default_time2wait + 4));
2981                         set_bit(DPC_RELOGIN_DEVICE, &ha->dpc_flags);
2982                         atomic_set(&ddb_entry->retry_relogin_timer,
2983                                    ddb_entry->default_time2wait + 4);
2984                 }
2985         }
2986 }
2987
2988 /**
2989  * qla4xxx_timer - checks every second for work to do.
2990  * @ha: Pointer to host adapter structure.
2991  **/
2992 static void qla4xxx_timer(struct scsi_qla_host *ha)
2993 {
2994         int start_dpc = 0;
2995         uint16_t w;
2996
2997         iscsi_host_for_each_session(ha->host, qla4xxx_check_relogin_flash_ddb);
2998
2999         /* If we are in the middle of AER/EEH processing
3000          * skip any processing and reschedule the timer
3001          */
3002         if (test_bit(AF_EEH_BUSY, &ha->flags)) {
3003                 mod_timer(&ha->timer, jiffies + HZ);
3004                 return;
3005         }
3006
3007         /* Hardware read to trigger an EEH error during mailbox waits. */
3008         if (!pci_channel_offline(ha->pdev))
3009                 pci_read_config_word(ha->pdev, PCI_VENDOR_ID, &w);
3010
3011         if (is_qla80XX(ha))
3012                 qla4_8xxx_watchdog(ha);
3013
3014         if (is_qla40XX(ha)) {
3015                 /* Check for heartbeat interval. */
3016                 if (ha->firmware_options & FWOPT_HEARTBEAT_ENABLE &&
3017                     ha->heartbeat_interval != 0) {
3018                         ha->seconds_since_last_heartbeat++;
3019                         if (ha->seconds_since_last_heartbeat >
3020                             ha->heartbeat_interval + 2)
3021                                 set_bit(DPC_RESET_HA, &ha->dpc_flags);
3022                 }
3023         }
3024
3025         /* Process any deferred work. */
3026         if (!list_empty(&ha->work_list))
3027                 start_dpc++;
3028
3029         /* Wakeup the dpc routine for this adapter, if needed. */
3030         if (start_dpc ||
3031              test_bit(DPC_RESET_HA, &ha->dpc_flags) ||
3032              test_bit(DPC_RETRY_RESET_HA, &ha->dpc_flags) ||
3033              test_bit(DPC_RELOGIN_DEVICE, &ha->dpc_flags) ||
3034              test_bit(DPC_RESET_HA_FW_CONTEXT, &ha->dpc_flags) ||
3035              test_bit(DPC_RESET_HA_INTR, &ha->dpc_flags) ||
3036              test_bit(DPC_GET_DHCP_IP_ADDR, &ha->dpc_flags) ||
3037              test_bit(DPC_LINK_CHANGED, &ha->dpc_flags) ||
3038              test_bit(DPC_HA_UNRECOVERABLE, &ha->dpc_flags) ||
3039              test_bit(DPC_HA_NEED_QUIESCENT, &ha->dpc_flags) ||
3040              test_bit(DPC_AEN, &ha->dpc_flags)) {
3041                 DEBUG2(printk("scsi%ld: %s: scheduling dpc routine"
3042                               " - dpc flags = 0x%lx\n",
3043                               ha->host_no, __func__, ha->dpc_flags));
3044                 qla4xxx_wake_dpc(ha);
3045         }
3046
3047         /* Reschedule timer thread to call us back in one second */
3048         mod_timer(&ha->timer, jiffies + HZ);
3049
3050         DEBUG2(ha->seconds_since_last_intr++);
3051 }
3052
3053 /**
3054  * qla4xxx_cmd_wait - waits for all outstanding commands to complete
3055  * @ha: Pointer to host adapter structure.
3056  *
3057  * This routine stalls the driver until all outstanding commands are returned.
3058  * Caller must release the Hardware Lock prior to calling this routine.
3059  **/
3060 static int qla4xxx_cmd_wait(struct scsi_qla_host *ha)
3061 {
3062         uint32_t index = 0;
3063         unsigned long flags;
3064         struct scsi_cmnd *cmd;
3065
3066         unsigned long wtime = jiffies + (WAIT_CMD_TOV * HZ);
3067
3068         DEBUG2(ql4_printk(KERN_INFO, ha, "Wait up to %d seconds for cmds to "
3069             "complete\n", WAIT_CMD_TOV));
3070
3071         while (!time_after_eq(jiffies, wtime)) {
3072                 spin_lock_irqsave(&ha->hardware_lock, flags);
3073                 /* Find a command that hasn't completed. */
3074                 for (index = 0; index < ha->host->can_queue; index++) {
3075                         cmd = scsi_host_find_tag(ha->host, index);
3076                         /*
3077                          * We cannot just check if the index is valid,
3078                          * becase if we are run from the scsi eh, then
3079                          * the scsi/block layer is going to prevent
3080                          * the tag from being released.
3081                          */
3082                         if (cmd != NULL && CMD_SP(cmd))
3083                                 break;
3084                 }
3085                 spin_unlock_irqrestore(&ha->hardware_lock, flags);
3086
3087                 /* If No Commands are pending, wait is complete */
3088                 if (index == ha->host->can_queue)
3089                         return QLA_SUCCESS;
3090
3091                 msleep(1000);
3092         }
3093         /* If we timed out on waiting for commands to come back
3094          * return ERROR. */
3095         return QLA_ERROR;
3096 }
3097
3098 int qla4xxx_hw_reset(struct scsi_qla_host *ha)
3099 {
3100         uint32_t ctrl_status;
3101         unsigned long flags = 0;
3102
3103         DEBUG2(printk(KERN_ERR "scsi%ld: %s\n", ha->host_no, __func__));
3104
3105         if (ql4xxx_lock_drvr_wait(ha) != QLA_SUCCESS)
3106                 return QLA_ERROR;
3107
3108         spin_lock_irqsave(&ha->hardware_lock, flags);
3109
3110         /*
3111          * If the SCSI Reset Interrupt bit is set, clear it.
3112          * Otherwise, the Soft Reset won't work.
3113          */
3114         ctrl_status = readw(&ha->reg->ctrl_status);
3115         if ((ctrl_status & CSR_SCSI_RESET_INTR) != 0)
3116                 writel(set_rmask(CSR_SCSI_RESET_INTR), &ha->reg->ctrl_status);
3117
3118         /* Issue Soft Reset */
3119         writel(set_rmask(CSR_SOFT_RESET), &ha->reg->ctrl_status);
3120         readl(&ha->reg->ctrl_status);
3121
3122         spin_unlock_irqrestore(&ha->hardware_lock, flags);
3123         return QLA_SUCCESS;
3124 }
3125
3126 /**
3127  * qla4xxx_soft_reset - performs soft reset.
3128  * @ha: Pointer to host adapter structure.
3129  **/
3130 int qla4xxx_soft_reset(struct scsi_qla_host *ha)
3131 {
3132         uint32_t max_wait_time;
3133         unsigned long flags = 0;
3134         int status;
3135         uint32_t ctrl_status;
3136
3137         status = qla4xxx_hw_reset(ha);
3138         if (status != QLA_SUCCESS)
3139                 return status;
3140
3141         status = QLA_ERROR;
3142         /* Wait until the Network Reset Intr bit is cleared */
3143         max_wait_time = RESET_INTR_TOV;
3144         do {
3145                 spin_lock_irqsave(&ha->hardware_lock, flags);
3146                 ctrl_status = readw(&ha->reg->ctrl_status);
3147                 spin_unlock_irqrestore(&ha->hardware_lock, flags);
3148
3149                 if ((ctrl_status & CSR_NET_RESET_INTR) == 0)
3150                         break;
3151
3152                 msleep(1000);
3153         } while ((--max_wait_time));
3154
3155         if ((ctrl_status & CSR_NET_RESET_INTR) != 0) {
3156                 DEBUG2(printk(KERN_WARNING
3157                               "scsi%ld: Network Reset Intr not cleared by "
3158                               "Network function, clearing it now!\n",
3159                               ha->host_no));
3160                 spin_lock_irqsave(&ha->hardware_lock, flags);
3161                 writel(set_rmask(CSR_NET_RESET_INTR), &ha->reg->ctrl_status);
3162                 readl(&ha->reg->ctrl_status);
3163                 spin_unlock_irqrestore(&ha->hardware_lock, flags);
3164         }
3165
3166         /* Wait until the firmware tells us the Soft Reset is done */
3167         max_wait_time = SOFT_RESET_TOV;
3168         do {
3169                 spin_lock_irqsave(&ha->hardware_lock, flags);
3170                 ctrl_status = readw(&ha->reg->ctrl_status);
3171                 spin_unlock_irqrestore(&ha->hardware_lock, flags);
3172
3173                 if ((ctrl_status & CSR_SOFT_RESET) == 0) {
3174                         status = QLA_SUCCESS;
3175                         break;
3176                 }
3177
3178                 msleep(1000);
3179         } while ((--max_wait_time));
3180
3181         /*
3182          * Also, make sure that the SCSI Reset Interrupt bit has been cleared
3183          * after the soft reset has taken place.
3184          */
3185         spin_lock_irqsave(&ha->hardware_lock, flags);
3186         ctrl_status = readw(&ha->reg->ctrl_status);
3187         if ((ctrl_status & CSR_SCSI_RESET_INTR) != 0) {
3188                 writel(set_rmask(CSR_SCSI_RESET_INTR), &ha->reg->ctrl_status);
3189                 readl(&ha->reg->ctrl_status);
3190         }
3191         spin_unlock_irqrestore(&ha->hardware_lock, flags);
3192
3193         /* If soft reset fails then most probably the bios on other
3194          * function is also enabled.
3195          * Since the initialization is sequential the other fn
3196          * wont be able to acknowledge the soft reset.
3197          * Issue a force soft reset to workaround this scenario.
3198          */
3199         if (max_wait_time == 0) {
3200                 /* Issue Force Soft Reset */
3201                 spin_lock_irqsave(&ha->hardware_lock, flags);
3202                 writel(set_rmask(CSR_FORCE_SOFT_RESET), &ha->reg->ctrl_status);
3203                 readl(&ha->reg->ctrl_status);
3204                 spin_unlock_irqrestore(&ha->hardware_lock, flags);
3205                 /* Wait until the firmware tells us the Soft Reset is done */
3206                 max_wait_time = SOFT_RESET_TOV;
3207                 do {
3208                         spin_lock_irqsave(&ha->hardware_lock, flags);
3209                         ctrl_status = readw(&ha->reg->ctrl_status);
3210                         spin_unlock_irqrestore(&ha->hardware_lock, flags);
3211
3212                         if ((ctrl_status & CSR_FORCE_SOFT_RESET) == 0) {
3213                                 status = QLA_SUCCESS;
3214                                 break;
3215                         }
3216
3217                         msleep(1000);
3218                 } while ((--max_wait_time));
3219         }
3220
3221         return status;
3222 }
3223
3224 /**
3225  * qla4xxx_abort_active_cmds - returns all outstanding i/o requests to O.S.
3226  * @ha: Pointer to host adapter structure.
3227  * @res: returned scsi status
3228  *
3229  * This routine is called just prior to a HARD RESET to return all
3230  * outstanding commands back to the Operating System.
3231  * Caller should make sure that the following locks are released
3232  * before this calling routine: Hardware lock, and io_request_lock.
3233  **/
3234 static void qla4xxx_abort_active_cmds(struct scsi_qla_host *ha, int res)
3235 {
3236         struct srb *srb;
3237         int i;
3238         unsigned long flags;
3239
3240         spin_lock_irqsave(&ha->hardware_lock, flags);
3241         for (i = 0; i < ha->host->can_queue; i++) {
3242                 srb = qla4xxx_del_from_active_array(ha, i);
3243                 if (srb != NULL) {
3244                         srb->cmd->result = res;
3245                         kref_put(&srb->srb_ref, qla4xxx_srb_compl);
3246                 }
3247         }
3248         spin_unlock_irqrestore(&ha->hardware_lock, flags);
3249 }
3250
3251 void qla4xxx_dead_adapter_cleanup(struct scsi_qla_host *ha)
3252 {
3253         clear_bit(AF_ONLINE, &ha->flags);
3254
3255         /* Disable the board */
3256         ql4_printk(KERN_INFO, ha, "Disabling the board\n");
3257
3258         qla4xxx_abort_active_cmds(ha, DID_NO_CONNECT << 16);
3259         qla4xxx_mark_all_devices_missing(ha);
3260         clear_bit(AF_INIT_DONE, &ha->flags);
3261 }
3262
3263 static void qla4xxx_fail_session(struct iscsi_cls_session *cls_session)
3264 {
3265         struct iscsi_session *sess;
3266         struct ddb_entry *ddb_entry;
3267
3268         sess = cls_session->dd_data;
3269         ddb_entry = sess->dd_data;
3270         ddb_entry->fw_ddb_device_state = DDB_DS_SESSION_FAILED;
3271
3272         if (ddb_entry->ddb_type == FLASH_DDB)
3273                 iscsi_block_session(ddb_entry->sess);
3274         else
3275                 iscsi_session_failure(cls_session->dd_data,
3276                                       ISCSI_ERR_CONN_FAILED);
3277 }
3278
3279 /**
3280  * qla4xxx_recover_adapter - recovers adapter after a fatal error
3281  * @ha: Pointer to host adapter structure.
3282  **/
3283 static int qla4xxx_recover_adapter(struct scsi_qla_host *ha)
3284 {
3285         int status = QLA_ERROR;
3286         uint8_t reset_chip = 0;
3287         uint32_t dev_state;
3288         unsigned long wait;
3289
3290         /* Stall incoming I/O until we are done */
3291         scsi_block_requests(ha->host);
3292         clear_bit(AF_ONLINE, &ha->flags);
3293         clear_bit(AF_LINK_UP, &ha->flags);
3294
3295         DEBUG2(ql4_printk(KERN_INFO, ha, "%s: adapter OFFLINE\n", __func__));
3296
3297         set_bit(DPC_RESET_ACTIVE, &ha->dpc_flags);
3298
3299         if (is_qla8032(ha) &&
3300             !test_bit(DPC_RESET_HA_FW_CONTEXT, &ha->dpc_flags)) {
3301                 ql4_printk(KERN_INFO, ha, "%s: disabling pause transmit on port 0 & 1.\n",
3302                            __func__);
3303                 /* disable pause frame for ISP83xx */
3304                 qla4_83xx_disable_pause(ha);
3305         }
3306
3307         iscsi_host_for_each_session(ha->host, qla4xxx_fail_session);
3308
3309         if (test_bit(DPC_RESET_HA, &ha->dpc_flags))
3310                 reset_chip = 1;
3311
3312         /* For the DPC_RESET_HA_INTR case (ISP-4xxx specific)
3313          * do not reset adapter, jump to initialize_adapter */
3314         if (test_bit(DPC_RESET_HA_INTR, &ha->dpc_flags)) {
3315                 status = QLA_SUCCESS;
3316                 goto recover_ha_init_adapter;
3317         }
3318
3319         /* For the ISP-8xxx adapter, issue a stop_firmware if invoked
3320          * from eh_host_reset or ioctl module */
3321         if (is_qla80XX(ha) && !reset_chip &&
3322             test_bit(DPC_RESET_HA_FW_CONTEXT, &ha->dpc_flags)) {
3323
3324                 DEBUG2(ql4_printk(KERN_INFO, ha,
3325                     "scsi%ld: %s - Performing stop_firmware...\n",
3326                     ha->host_no, __func__));
3327                 status = ha->isp_ops->reset_firmware(ha);
3328                 if (status == QLA_SUCCESS) {
3329                         if (!test_bit(AF_FW_RECOVERY, &ha->flags))
3330                                 qla4xxx_cmd_wait(ha);
3331
3332                         ha->isp_ops->disable_intrs(ha);
3333                         qla4xxx_process_aen(ha, FLUSH_DDB_CHANGED_AENS);
3334                         qla4xxx_abort_active_cmds(ha, DID_RESET << 16);
3335                 } else {
3336                         /* If the stop_firmware fails then
3337                          * reset the entire chip */
3338                         reset_chip = 1;
3339                         clear_bit(DPC_RESET_HA_FW_CONTEXT, &ha->dpc_flags);
3340                         set_bit(DPC_RESET_HA, &ha->dpc_flags);
3341                 }
3342         }
3343
3344         /* Issue full chip reset if recovering from a catastrophic error,
3345          * or if stop_firmware fails for ISP-8xxx.
3346          * This is the default case for ISP-4xxx */
3347         if (is_qla40XX(ha) || reset_chip) {
3348                 if (is_qla40XX(ha))
3349                         goto chip_reset;
3350
3351                 /* Check if 8XXX firmware is alive or not
3352                  * We may have arrived here from NEED_RESET
3353                  * detection only */
3354                 if (test_bit(AF_FW_RECOVERY, &ha->flags))
3355                         goto chip_reset;
3356
3357                 wait = jiffies + (FW_ALIVE_WAIT_TOV * HZ);
3358                 while (time_before(jiffies, wait)) {
3359                         if (qla4_8xxx_check_fw_alive(ha)) {
3360                                 qla4xxx_mailbox_premature_completion(ha);
3361                                 break;
3362                         }
3363
3364                         set_current_state(TASK_UNINTERRUPTIBLE);
3365                         schedule_timeout(HZ);
3366                 }
3367 chip_reset:
3368                 if (!test_bit(AF_FW_RECOVERY, &ha->flags))
3369                         qla4xxx_cmd_wait(ha);
3370
3371                 qla4xxx_process_aen(ha, FLUSH_DDB_CHANGED_AENS);
3372                 qla4xxx_abort_active_cmds(ha, DID_RESET << 16);
3373                 DEBUG2(ql4_printk(KERN_INFO, ha,
3374                     "scsi%ld: %s - Performing chip reset..\n",
3375                     ha->host_no, __func__));
3376                 status = ha->isp_ops->reset_chip(ha);
3377         }
3378
3379         /* Flush any pending ddb changed AENs */
3380         qla4xxx_process_aen(ha, FLUSH_DDB_CHANGED_AENS);
3381
3382 recover_ha_init_adapter:
3383         /* Upon successful firmware/chip reset, re-initialize the adapter */
3384         if (status == QLA_SUCCESS) {
3385                 /* For ISP-4xxx, force function 1 to always initialize
3386                  * before function 3 to prevent both funcions from
3387                  * stepping on top of the other */
3388                 if (is_qla40XX(ha) && (ha->mac_index == 3))
3389                         ssleep(6);
3390
3391                 /* NOTE: AF_ONLINE flag set upon successful completion of
3392                  *       qla4xxx_initialize_adapter */
3393                 status = qla4xxx_initialize_adapter(ha, RESET_ADAPTER);
3394         }
3395
3396         /* Retry failed adapter initialization, if necessary
3397          * Do not retry initialize_adapter for RESET_HA_INTR (ISP-4xxx specific)
3398          * case to prevent ping-pong resets between functions */
3399         if (!test_bit(AF_ONLINE, &ha->flags) &&
3400             !test_bit(DPC_RESET_HA_INTR, &ha->dpc_flags)) {
3401                 /* Adapter initialization failed, see if we can retry
3402                  * resetting the ha.
3403                  * Since we don't want to block the DPC for too long
3404                  * with multiple resets in the same thread,
3405                  * utilize DPC to retry */
3406                 if (is_qla80XX(ha)) {
3407                         ha->isp_ops->idc_lock(ha);
3408                         dev_state = qla4_8xxx_rd_direct(ha,
3409                                                         QLA8XXX_CRB_DEV_STATE);
3410                         ha->isp_ops->idc_unlock(ha);
3411                         if (dev_state == QLA8XXX_DEV_FAILED) {
3412                                 ql4_printk(KERN_INFO, ha, "%s: don't retry "
3413                                            "recover adapter. H/W is in Failed "
3414                                            "state\n", __func__);
3415                                 qla4xxx_dead_adapter_cleanup(ha);
3416                                 clear_bit(DPC_RETRY_RESET_HA, &ha->dpc_flags);
3417                                 clear_bit(DPC_RESET_HA, &ha->dpc_flags);
3418                                 clear_bit(DPC_RESET_HA_FW_CONTEXT,
3419                                                 &ha->dpc_flags);
3420                                 status = QLA_ERROR;
3421
3422                                 goto exit_recover;
3423                         }
3424                 }
3425
3426                 if (!test_bit(DPC_RETRY_RESET_HA, &ha->dpc_flags)) {
3427                         ha->retry_reset_ha_cnt = MAX_RESET_HA_RETRIES;
3428                         DEBUG2(printk("scsi%ld: recover adapter - retrying "
3429                                       "(%d) more times\n", ha->host_no,
3430                                       ha->retry_reset_ha_cnt));
3431                         set_bit(DPC_RETRY_RESET_HA, &ha->dpc_flags);
3432                         status = QLA_ERROR;
3433                 } else {
3434                         if (ha->retry_reset_ha_cnt > 0) {
3435                                 /* Schedule another Reset HA--DPC will retry */
3436                                 ha->retry_reset_ha_cnt--;
3437                                 DEBUG2(printk("scsi%ld: recover adapter - "
3438                                               "retry remaining %d\n",
3439                                               ha->host_no,
3440                                               ha->retry_reset_ha_cnt));
3441                                 status = QLA_ERROR;
3442                         }
3443
3444                         if (ha->retry_reset_ha_cnt == 0) {
3445                                 /* Recover adapter retries have been exhausted.
3446                                  * Adapter DEAD */
3447                                 DEBUG2(printk("scsi%ld: recover adapter "
3448                                               "failed - board disabled\n",
3449                                               ha->host_no));
3450                                 qla4xxx_dead_adapter_cleanup(ha);
3451                                 clear_bit(DPC_RETRY_RESET_HA, &ha->dpc_flags);
3452                                 clear_bit(DPC_RESET_HA, &ha->dpc_flags);
3453                                 clear_bit(DPC_RESET_HA_FW_CONTEXT,
3454                                           &ha->dpc_flags);
3455                                 status = QLA_ERROR;
3456                         }
3457                 }
3458         } else {
3459                 clear_bit(DPC_RESET_HA, &ha->dpc_flags);
3460                 clear_bit(DPC_RESET_HA_FW_CONTEXT, &ha->dpc_flags);
3461                 clear_bit(DPC_RETRY_RESET_HA, &ha->dpc_flags);
3462         }
3463
3464 exit_recover:
3465         ha->adapter_error_count++;
3466
3467         if (test_bit(AF_ONLINE, &ha->flags))
3468                 ha->isp_ops->enable_intrs(ha);
3469
3470         scsi_unblock_requests(ha->host);
3471
3472         clear_bit(DPC_RESET_ACTIVE, &ha->dpc_flags);
3473         DEBUG2(printk("scsi%ld: recover adapter: %s\n", ha->host_no,
3474             status == QLA_ERROR ? "FAILED" : "SUCCEEDED"));
3475
3476         return status;
3477 }
3478
3479 static void qla4xxx_relogin_devices(struct iscsi_cls_session *cls_session)
3480 {
3481         struct iscsi_session *sess;
3482         struct ddb_entry *ddb_entry;
3483         struct scsi_qla_host *ha;
3484
3485         sess = cls_session->dd_data;
3486         ddb_entry = sess->dd_data;
3487         ha = ddb_entry->ha;
3488         if (!iscsi_is_session_online(cls_session)) {
3489                 if (ddb_entry->fw_ddb_device_state == DDB_DS_SESSION_ACTIVE) {
3490                         ql4_printk(KERN_INFO, ha, "scsi%ld: %s: ddb[%d]"
3491                                    " unblock session\n", ha->host_no, __func__,
3492                                    ddb_entry->fw_ddb_index);
3493                         iscsi_unblock_session(ddb_entry->sess);
3494                 } else {
3495                         /* Trigger relogin */
3496                         if (ddb_entry->ddb_type == FLASH_DDB) {
3497                                 if (!test_bit(DF_RELOGIN, &ddb_entry->flags))
3498                                         qla4xxx_arm_relogin_timer(ddb_entry);
3499                         } else
3500                                 iscsi_session_failure(cls_session->dd_data,
3501                                                       ISCSI_ERR_CONN_FAILED);
3502                 }
3503         }
3504 }
3505
3506 int qla4xxx_unblock_flash_ddb(struct iscsi_cls_session *cls_session)
3507 {
3508         struct iscsi_session *sess;
3509         struct ddb_entry *ddb_entry;
3510         struct scsi_qla_host *ha;
3511
3512         sess = cls_session->dd_data;
3513         ddb_entry = sess->dd_data;
3514         ha = ddb_entry->ha;
3515         ql4_printk(KERN_INFO, ha, "scsi%ld: %s: ddb[%d]"
3516                    " unblock session\n", ha->host_no, __func__,
3517                    ddb_entry->fw_ddb_index);
3518
3519         iscsi_unblock_session(ddb_entry->sess);
3520
3521         /* Start scan target */
3522         if (test_bit(AF_ONLINE, &ha->flags)) {
3523                 ql4_printk(KERN_INFO, ha, "scsi%ld: %s: ddb[%d]"
3524                            " start scan\n", ha->host_no, __func__,
3525                            ddb_entry->fw_ddb_index);
3526                 scsi_queue_work(ha->host, &ddb_entry->sess->scan_work);
3527         }
3528         return QLA_SUCCESS;
3529 }
3530
3531 int qla4xxx_unblock_ddb(struct iscsi_cls_session *cls_session)
3532 {
3533         struct iscsi_session *sess;
3534         struct ddb_entry *ddb_entry;
3535         struct scsi_qla_host *ha;
3536         int status = QLA_SUCCESS;
3537
3538         sess = cls_session->dd_data;
3539         ddb_entry = sess->dd_data;
3540         ha = ddb_entry->ha;
3541         ql4_printk(KERN_INFO, ha, "scsi%ld: %s: ddb[%d]"
3542                    " unblock user space session\n", ha->host_no, __func__,
3543                    ddb_entry->fw_ddb_index);
3544
3545         if (!iscsi_is_session_online(cls_session)) {
3546                 iscsi_conn_start(ddb_entry->conn);
3547                 iscsi_conn_login_event(ddb_entry->conn,
3548                                        ISCSI_CONN_STATE_LOGGED_IN);
3549         } else {
3550                 ql4_printk(KERN_INFO, ha,
3551                            "scsi%ld: %s: ddb[%d] session [%d] already logged in\n",
3552                            ha->host_no, __func__, ddb_entry->fw_ddb_index,
3553                            cls_session->sid);
3554                 status = QLA_ERROR;
3555         }
3556
3557         return status;
3558 }
3559
3560 static void qla4xxx_relogin_all_devices(struct scsi_qla_host *ha)
3561 {
3562         iscsi_host_for_each_session(ha->host, qla4xxx_relogin_devices);
3563 }
3564
3565 static void qla4xxx_relogin_flash_ddb(struct iscsi_cls_session *cls_sess)
3566 {
3567         uint16_t relogin_timer;
3568         struct iscsi_session *sess;
3569         struct ddb_entry *ddb_entry;
3570         struct scsi_qla_host *ha;
3571
3572         sess = cls_sess->dd_data;
3573         ddb_entry = sess->dd_data;
3574         ha = ddb_entry->ha;
3575
3576         relogin_timer = max(ddb_entry->default_relogin_timeout,
3577                             (uint16_t)RELOGIN_TOV);
3578         atomic_set(&ddb_entry->relogin_timer, relogin_timer);
3579
3580         DEBUG2(ql4_printk(KERN_INFO, ha,
3581                           "scsi%ld: Relogin index [%d]. TOV=%d\n", ha->host_no,
3582                           ddb_entry->fw_ddb_index, relogin_timer));
3583
3584         qla4xxx_login_flash_ddb(cls_sess);
3585 }
3586
3587 static void qla4xxx_dpc_relogin(struct iscsi_cls_session *cls_sess)
3588 {
3589         struct iscsi_session *sess;
3590         struct ddb_entry *ddb_entry;
3591         struct scsi_qla_host *ha;
3592
3593         sess = cls_sess->dd_data;
3594         ddb_entry = sess->dd_data;
3595         ha = ddb_entry->ha;
3596
3597         if (!(ddb_entry->ddb_type == FLASH_DDB))
3598                 return;
3599
3600         if (test_and_clear_bit(DF_RELOGIN, &ddb_entry->flags) &&
3601             !iscsi_is_session_online(cls_sess)) {
3602                 DEBUG2(ql4_printk(KERN_INFO, ha,
3603                                   "relogin issued\n"));
3604                 qla4xxx_relogin_flash_ddb(cls_sess);
3605         }
3606 }
3607
3608 void qla4xxx_wake_dpc(struct scsi_qla_host *ha)
3609 {
3610         if (ha->dpc_thread)
3611                 queue_work(ha->dpc_thread, &ha->dpc_work);
3612 }
3613
3614 static struct qla4_work_evt *
3615 qla4xxx_alloc_work(struct scsi_qla_host *ha, uint32_t data_size,
3616                    enum qla4_work_type type)
3617 {
3618         struct qla4_work_evt *e;
3619         uint32_t size = sizeof(struct qla4_work_evt) + data_size;
3620
3621         e = kzalloc(size, GFP_ATOMIC);
3622         if (!e)
3623                 return NULL;
3624
3625         INIT_LIST_HEAD(&e->list);
3626         e->type = type;
3627         return e;
3628 }
3629
3630 static void qla4xxx_post_work(struct scsi_qla_host *ha,
3631                              struct qla4_work_evt *e)
3632 {
3633         unsigned long flags;
3634
3635         spin_lock_irqsave(&ha->work_lock, flags);
3636         list_add_tail(&e->list, &ha->work_list);
3637         spin_unlock_irqrestore(&ha->work_lock, flags);
3638         qla4xxx_wake_dpc(ha);
3639 }
3640
3641 int qla4xxx_post_aen_work(struct scsi_qla_host *ha,
3642                           enum iscsi_host_event_code aen_code,
3643                           uint32_t data_size, uint8_t *data)
3644 {
3645         struct qla4_work_evt *e;
3646
3647         e = qla4xxx_alloc_work(ha, data_size, QLA4_EVENT_AEN);
3648         if (!e)
3649                 return QLA_ERROR;
3650
3651         e->u.aen.code = aen_code;
3652         e->u.aen.data_size = data_size;
3653         memcpy(e->u.aen.data, data, data_size);
3654
3655         qla4xxx_post_work(ha, e);
3656
3657         return QLA_SUCCESS;
3658 }
3659
3660 int qla4xxx_post_ping_evt_work(struct scsi_qla_host *ha,
3661                                uint32_t status, uint32_t pid,
3662                                uint32_t data_size, uint8_t *data)
3663 {
3664         struct qla4_work_evt *e;
3665
3666         e = qla4xxx_alloc_work(ha, data_size, QLA4_EVENT_PING_STATUS);
3667         if (!e)
3668                 return QLA_ERROR;
3669
3670         e->u.ping.status = status;
3671         e->u.ping.pid = pid;
3672         e->u.ping.data_size = data_size;
3673         memcpy(e->u.ping.data, data, data_size);
3674
3675         qla4xxx_post_work(ha, e);
3676
3677         return QLA_SUCCESS;
3678 }
3679
3680 static void qla4xxx_do_work(struct scsi_qla_host *ha)
3681 {
3682         struct qla4_work_evt *e, *tmp;
3683         unsigned long flags;
3684         LIST_HEAD(work);
3685
3686         spin_lock_irqsave(&ha->work_lock, flags);
3687         list_splice_init(&ha->work_list, &work);
3688         spin_unlock_irqrestore(&ha->work_lock, flags);
3689
3690         list_for_each_entry_safe(e, tmp, &work, list) {
3691                 list_del_init(&e->list);
3692
3693                 switch (e->type) {
3694                 case QLA4_EVENT_AEN:
3695                         iscsi_post_host_event(ha->host_no,
3696                                               &qla4xxx_iscsi_transport,
3697                                               e->u.aen.code,
3698                                               e->u.aen.data_size,
3699                                               e->u.aen.data);
3700                         break;
3701                 case QLA4_EVENT_PING_STATUS:
3702                         iscsi_ping_comp_event(ha->host_no,
3703                                               &qla4xxx_iscsi_transport,
3704                                               e->u.ping.status,
3705                                               e->u.ping.pid,
3706                                               e->u.ping.data_size,
3707                                               e->u.ping.data);
3708                         break;
3709                 default:
3710                         ql4_printk(KERN_WARNING, ha, "event type: 0x%x not "
3711                                    "supported", e->type);
3712                 }
3713                 kfree(e);
3714         }
3715 }
3716
3717 /**
3718  * qla4xxx_do_dpc - dpc routine
3719  * @data: in our case pointer to adapter structure
3720  *
3721  * This routine is a task that is schedule by the interrupt handler
3722  * to perform the background processing for interrupts.  We put it
3723  * on a task queue that is consumed whenever the scheduler runs; that's
3724  * so you can do anything (i.e. put the process to sleep etc).  In fact,
3725  * the mid-level tries to sleep when it reaches the driver threshold
3726  * "host->can_queue". This can cause a panic if we were in our interrupt code.
3727  **/
3728 static void qla4xxx_do_dpc(struct work_struct *work)
3729 {
3730         struct scsi_qla_host *ha =
3731                 container_of(work, struct scsi_qla_host, dpc_work);
3732         int status = QLA_ERROR;
3733
3734         DEBUG2(printk("scsi%ld: %s: DPC handler waking up."
3735             "flags = 0x%08lx, dpc_flags = 0x%08lx\n",
3736             ha->host_no, __func__, ha->flags, ha->dpc_flags))
3737
3738         /* Initialization not yet finished. Don't do anything yet. */
3739         if (!test_bit(AF_INIT_DONE, &ha->flags))
3740                 return;
3741
3742         if (test_bit(AF_EEH_BUSY, &ha->flags)) {
3743                 DEBUG2(printk(KERN_INFO "scsi%ld: %s: flags = %lx\n",
3744                     ha->host_no, __func__, ha->flags));
3745                 return;
3746         }
3747
3748         /* post events to application */
3749         qla4xxx_do_work(ha);
3750
3751         if (is_qla80XX(ha)) {
3752                 if (test_bit(DPC_HA_UNRECOVERABLE, &ha->dpc_flags)) {
3753                         if (is_qla8032(ha)) {
3754                                 ql4_printk(KERN_INFO, ha, "%s: disabling pause transmit on port 0 & 1.\n",
3755                                            __func__);
3756                                 /* disable pause frame for ISP83xx */
3757                                 qla4_83xx_disable_pause(ha);
3758                         }
3759
3760                         ha->isp_ops->idc_lock(ha);
3761                         qla4_8xxx_wr_direct(ha, QLA8XXX_CRB_DEV_STATE,
3762                                             QLA8XXX_DEV_FAILED);
3763                         ha->isp_ops->idc_unlock(ha);
3764                         ql4_printk(KERN_INFO, ha, "HW State: FAILED\n");
3765                         qla4_8xxx_device_state_handler(ha);
3766                 }
3767
3768                 if (test_and_clear_bit(DPC_POST_IDC_ACK, &ha->dpc_flags))
3769                         qla4_83xx_post_idc_ack(ha);
3770
3771                 if (test_and_clear_bit(DPC_HA_NEED_QUIESCENT, &ha->dpc_flags)) {
3772                         qla4_8xxx_need_qsnt_handler(ha);
3773                 }
3774         }
3775
3776         if (!test_bit(DPC_RESET_ACTIVE, &ha->dpc_flags) &&
3777             (test_bit(DPC_RESET_HA, &ha->dpc_flags) ||
3778             test_bit(DPC_RESET_HA_INTR, &ha->dpc_flags) ||
3779             test_bit(DPC_RESET_HA_FW_CONTEXT, &ha->dpc_flags))) {
3780                 if ((is_qla8022(ha) && ql4xdontresethba) ||
3781                     (is_qla8032(ha) && qla4_83xx_idc_dontreset(ha))) {
3782                         DEBUG2(printk("scsi%ld: %s: Don't Reset HBA\n",
3783                             ha->host_no, __func__));
3784                         clear_bit(DPC_RESET_HA, &ha->dpc_flags);
3785                         clear_bit(DPC_RESET_HA_INTR, &ha->dpc_flags);
3786                         clear_bit(DPC_RESET_HA_FW_CONTEXT, &ha->dpc_flags);
3787                         goto dpc_post_reset_ha;
3788                 }
3789                 if (test_bit(DPC_RESET_HA_FW_CONTEXT, &ha->dpc_flags) ||
3790                     test_bit(DPC_RESET_HA, &ha->dpc_flags))
3791                         qla4xxx_recover_adapter(ha);
3792
3793                 if (test_bit(DPC_RESET_HA_INTR, &ha->dpc_flags)) {
3794                         uint8_t wait_time = RESET_INTR_TOV;
3795
3796                         while ((readw(&ha->reg->ctrl_status) &
3797                                 (CSR_SOFT_RESET | CSR_FORCE_SOFT_RESET)) != 0) {
3798                                 if (--wait_time == 0)
3799                                         break;
3800                                 msleep(1000);
3801                         }
3802                         if (wait_time == 0)
3803                                 DEBUG2(printk("scsi%ld: %s: SR|FSR "
3804                                               "bit not cleared-- resetting\n",
3805                                               ha->host_no, __func__));
3806                         qla4xxx_abort_active_cmds(ha, DID_RESET << 16);
3807                         if (ql4xxx_lock_drvr_wait(ha) == QLA_SUCCESS) {
3808                                 qla4xxx_process_aen(ha, FLUSH_DDB_CHANGED_AENS);
3809                                 status = qla4xxx_recover_adapter(ha);
3810                         }
3811                         clear_bit(DPC_RESET_HA_INTR, &ha->dpc_flags);
3812                         if (status == QLA_SUCCESS)
3813                                 ha->isp_ops->enable_intrs(ha);
3814                 }
3815         }
3816
3817 dpc_post_reset_ha:
3818         /* ---- process AEN? --- */
3819         if (test_and_clear_bit(DPC_AEN, &ha->dpc_flags))
3820                 qla4xxx_process_aen(ha, PROCESS_ALL_AENS);
3821
3822         /* ---- Get DHCP IP Address? --- */
3823         if (test_and_clear_bit(DPC_GET_DHCP_IP_ADDR, &ha->dpc_flags))
3824                 qla4xxx_get_dhcp_ip_address(ha);
3825
3826         /* ---- relogin device? --- */
3827         if (adapter_up(ha) &&
3828             test_and_clear_bit(DPC_RELOGIN_DEVICE, &ha->dpc_flags)) {
3829                 iscsi_host_for_each_session(ha->host, qla4xxx_dpc_relogin);
3830         }
3831
3832         /* ---- link change? --- */
3833         if (!test_bit(AF_LOOPBACK, &ha->flags) &&
3834             test_and_clear_bit(DPC_LINK_CHANGED, &ha->dpc_flags)) {
3835                 if (!test_bit(AF_LINK_UP, &ha->flags)) {
3836                         /* ---- link down? --- */
3837                         qla4xxx_mark_all_devices_missing(ha);
3838                 } else {
3839                         /* ---- link up? --- *
3840                          * F/W will auto login to all devices ONLY ONCE after
3841                          * link up during driver initialization and runtime
3842                          * fatal error recovery.  Therefore, the driver must
3843                          * manually relogin to devices when recovering from
3844                          * connection failures, logouts, expired KATO, etc. */
3845                         if (test_and_clear_bit(AF_BUILD_DDB_LIST, &ha->flags)) {
3846                                 qla4xxx_build_ddb_list(ha, ha->is_reset);
3847                                 iscsi_host_for_each_session(ha->host,
3848                                                 qla4xxx_login_flash_ddb);
3849                         } else
3850                                 qla4xxx_relogin_all_devices(ha);
3851                 }
3852         }
3853 }
3854
3855 /**
3856  * qla4xxx_free_adapter - release the adapter
3857  * @ha: pointer to adapter structure
3858  **/
3859 static void qla4xxx_free_adapter(struct scsi_qla_host *ha)
3860 {
3861         qla4xxx_abort_active_cmds(ha, DID_NO_CONNECT << 16);
3862
3863         /* Turn-off interrupts on the card. */
3864         ha->isp_ops->disable_intrs(ha);
3865
3866         if (is_qla40XX(ha)) {
3867                 writel(set_rmask(CSR_SCSI_PROCESSOR_INTR),
3868                        &ha->reg->ctrl_status);
3869                 readl(&ha->reg->ctrl_status);
3870         } else if (is_qla8022(ha)) {
3871                 writel(0, &ha->qla4_82xx_reg->host_int);
3872                 readl(&ha->qla4_82xx_reg->host_int);
3873         } else if (is_qla8032(ha)) {
3874                 writel(0, &ha->qla4_83xx_reg->risc_intr);
3875                 readl(&ha->qla4_83xx_reg->risc_intr);
3876         }
3877
3878         /* Remove timer thread, if present */
3879         if (ha->timer_active)
3880                 qla4xxx_stop_timer(ha);
3881
3882         /* Kill the kernel thread for this host */
3883         if (ha->dpc_thread)
3884                 destroy_workqueue(ha->dpc_thread);
3885
3886         /* Kill the kernel thread for this host */
3887         if (ha->task_wq)
3888                 destroy_workqueue(ha->task_wq);
3889
3890         /* Put firmware in known state */
3891         ha->isp_ops->reset_firmware(ha);
3892
3893         if (is_qla80XX(ha)) {
3894                 ha->isp_ops->idc_lock(ha);
3895                 qla4_8xxx_clear_drv_active(ha);
3896                 ha->isp_ops->idc_unlock(ha);
3897         }
3898
3899         /* Detach interrupts */
3900         qla4xxx_free_irqs(ha);
3901
3902         /* free extra memory */
3903         qla4xxx_mem_free(ha);
3904 }
3905
3906 int qla4_8xxx_iospace_config(struct scsi_qla_host *ha)
3907 {
3908         int status = 0;
3909         unsigned long mem_base, mem_len, db_base, db_len;
3910         struct pci_dev *pdev = ha->pdev;
3911
3912         status = pci_request_regions(pdev, DRIVER_NAME);
3913         if (status) {
3914                 printk(KERN_WARNING
3915                     "scsi(%ld) Failed to reserve PIO regions (%s) "
3916                     "status=%d\n", ha->host_no, pci_name(pdev), status);
3917                 goto iospace_error_exit;
3918         }
3919
3920         DEBUG2(printk(KERN_INFO "%s: revision-id=%d\n",
3921             __func__, pdev->revision));
3922         ha->revision_id = pdev->revision;
3923
3924         /* remap phys address */
3925         mem_base = pci_resource_start(pdev, 0); /* 0 is for BAR 0 */
3926         mem_len = pci_resource_len(pdev, 0);
3927         DEBUG2(printk(KERN_INFO "%s: ioremap from %lx a size of %lx\n",
3928             __func__, mem_base, mem_len));
3929
3930         /* mapping of pcibase pointer */
3931         ha->nx_pcibase = (unsigned long)ioremap(mem_base, mem_len);
3932         if (!ha->nx_pcibase) {
3933                 printk(KERN_ERR
3934                     "cannot remap MMIO (%s), aborting\n", pci_name(pdev));
3935                 pci_release_regions(ha->pdev);
3936                 goto iospace_error_exit;
3937         }
3938
3939         /* Mapping of IO base pointer, door bell read and write pointer */
3940
3941         /* mapping of IO base pointer */
3942         if (is_qla8022(ha)) {
3943                 ha->qla4_82xx_reg = (struct device_reg_82xx  __iomem *)
3944                                     ((uint8_t *)ha->nx_pcibase + 0xbc000 +
3945                                      (ha->pdev->devfn << 11));
3946                 ha->nx_db_wr_ptr = (ha->pdev->devfn == 4 ? QLA82XX_CAM_RAM_DB1 :
3947                                     QLA82XX_CAM_RAM_DB2);
3948         } else if (is_qla8032(ha)) {
3949                 ha->qla4_83xx_reg = (struct device_reg_83xx __iomem *)
3950                                     ((uint8_t *)ha->nx_pcibase);
3951         }
3952
3953         db_base = pci_resource_start(pdev, 4);  /* doorbell is on bar 4 */
3954         db_len = pci_resource_len(pdev, 4);
3955
3956         return 0;
3957 iospace_error_exit:
3958         return -ENOMEM;
3959 }
3960
3961 /***
3962  * qla4xxx_iospace_config - maps registers
3963  * @ha: pointer to adapter structure
3964  *
3965  * This routines maps HBA's registers from the pci address space
3966  * into the kernel virtual address space for memory mapped i/o.
3967  **/
3968 int qla4xxx_iospace_config(struct scsi_qla_host *ha)
3969 {
3970         unsigned long pio, pio_len, pio_flags;
3971         unsigned long mmio, mmio_len, mmio_flags;
3972
3973         pio = pci_resource_start(ha->pdev, 0);
3974         pio_len = pci_resource_len(ha->pdev, 0);
3975         pio_flags = pci_resource_flags(ha->pdev, 0);
3976         if (pio_flags & IORESOURCE_IO) {
3977                 if (pio_len < MIN_IOBASE_LEN) {
3978                         ql4_printk(KERN_WARNING, ha,
3979                                 "Invalid PCI I/O region size\n");
3980                         pio = 0;
3981                 }
3982         } else {
3983                 ql4_printk(KERN_WARNING, ha, "region #0 not a PIO resource\n");
3984                 pio = 0;
3985         }
3986
3987         /* Use MMIO operations for all accesses. */
3988         mmio = pci_resource_start(ha->pdev, 1);
3989         mmio_len = pci_resource_len(ha->pdev, 1);
3990         mmio_flags = pci_resource_flags(ha->pdev, 1);
3991
3992         if (!(mmio_flags & IORESOURCE_MEM)) {
3993                 ql4_printk(KERN_ERR, ha,
3994                     "region #0 not an MMIO resource, aborting\n");
3995
3996                 goto iospace_error_exit;
3997         }
3998
3999         if (mmio_len < MIN_IOBASE_LEN) {
4000                 ql4_printk(KERN_ERR, ha,
4001                     "Invalid PCI mem region size, aborting\n");
4002                 goto iospace_error_exit;
4003         }
4004
4005         if (pci_request_regions(ha->pdev, DRIVER_NAME)) {
4006                 ql4_printk(KERN_WARNING, ha,
4007                     "Failed to reserve PIO/MMIO regions\n");
4008
4009                 goto iospace_error_exit;
4010         }
4011
4012         ha->pio_address = pio;
4013         ha->pio_length = pio_len;
4014         ha->reg = ioremap(mmio, MIN_IOBASE_LEN);
4015         if (!ha->reg) {
4016                 ql4_printk(KERN_ERR, ha,
4017                     "cannot remap MMIO, aborting\n");
4018
4019                 goto iospace_error_exit;
4020         }
4021
4022         return 0;
4023
4024 iospace_error_exit:
4025         return -ENOMEM;
4026 }
4027
4028 static struct isp_operations qla4xxx_isp_ops = {
4029         .iospace_config         = qla4xxx_iospace_config,
4030         .pci_config             = qla4xxx_pci_config,
4031         .disable_intrs          = qla4xxx_disable_intrs,
4032         .enable_intrs           = qla4xxx_enable_intrs,
4033         .start_firmware         = qla4xxx_start_firmware,
4034         .intr_handler           = qla4xxx_intr_handler,
4035         .interrupt_service_routine = qla4xxx_interrupt_service_routine,
4036         .reset_chip             = qla4xxx_soft_reset,
4037         .reset_firmware         = qla4xxx_hw_reset,
4038         .queue_iocb             = qla4xxx_queue_iocb,
4039         .complete_iocb          = qla4xxx_complete_iocb,
4040         .rd_shdw_req_q_out      = qla4xxx_rd_shdw_req_q_out,
4041         .rd_shdw_rsp_q_in       = qla4xxx_rd_shdw_rsp_q_in,
4042         .get_sys_info           = qla4xxx_get_sys_info,
4043         .queue_mailbox_command  = qla4xxx_queue_mbox_cmd,
4044         .process_mailbox_interrupt = qla4xxx_process_mbox_intr,
4045 };
4046
4047 static struct isp_operations qla4_82xx_isp_ops = {
4048         .iospace_config         = qla4_8xxx_iospace_config,
4049         .pci_config             = qla4_8xxx_pci_config,
4050         .disable_intrs          = qla4_82xx_disable_intrs,
4051         .enable_intrs           = qla4_82xx_enable_intrs,
4052         .start_firmware         = qla4_8xxx_load_risc,
4053         .restart_firmware       = qla4_82xx_try_start_fw,
4054         .intr_handler           = qla4_82xx_intr_handler,
4055         .interrupt_service_routine = qla4_82xx_interrupt_service_routine,
4056         .need_reset             = qla4_8xxx_need_reset,
4057         .reset_chip             = qla4_82xx_isp_reset,
4058         .reset_firmware         = qla4_8xxx_stop_firmware,
4059         .queue_iocb             = qla4_82xx_queue_iocb,
4060         .complete_iocb          = qla4_82xx_complete_iocb,
4061         .rd_shdw_req_q_out      = qla4_82xx_rd_shdw_req_q_out,
4062         .rd_shdw_rsp_q_in       = qla4_82xx_rd_shdw_rsp_q_in,
4063         .get_sys_info           = qla4_8xxx_get_sys_info,
4064         .rd_reg_direct          = qla4_82xx_rd_32,
4065         .wr_reg_direct          = qla4_82xx_wr_32,
4066         .rd_reg_indirect        = qla4_82xx_md_rd_32,
4067         .wr_reg_indirect        = qla4_82xx_md_wr_32,
4068         .idc_lock               = qla4_82xx_idc_lock,
4069         .idc_unlock             = qla4_82xx_idc_unlock,
4070         .rom_lock_recovery      = qla4_82xx_rom_lock_recovery,
4071         .queue_mailbox_command  = qla4_82xx_queue_mbox_cmd,
4072         .process_mailbox_interrupt = qla4_82xx_process_mbox_intr,
4073 };
4074
4075 static struct isp_operations qla4_83xx_isp_ops = {
4076         .iospace_config         = qla4_8xxx_iospace_config,
4077         .pci_config             = qla4_8xxx_pci_config,
4078         .disable_intrs          = qla4_83xx_disable_intrs,
4079         .enable_intrs           = qla4_83xx_enable_intrs,
4080         .start_firmware         = qla4_8xxx_load_risc,
4081         .restart_firmware       = qla4_83xx_start_firmware,
4082         .intr_handler           = qla4_83xx_intr_handler,
4083         .interrupt_service_routine = qla4_83xx_interrupt_service_routine,
4084         .need_reset             = qla4_8xxx_need_reset,
4085         .reset_chip             = qla4_83xx_isp_reset,
4086         .reset_firmware         = qla4_8xxx_stop_firmware,
4087         .queue_iocb             = qla4_83xx_queue_iocb,
4088         .complete_iocb          = qla4_83xx_complete_iocb,
4089         .rd_shdw_req_q_out      = qla4xxx_rd_shdw_req_q_out,
4090         .rd_shdw_rsp_q_in       = qla4xxx_rd_shdw_rsp_q_in,
4091         .get_sys_info           = qla4_8xxx_get_sys_info,
4092         .rd_reg_direct          = qla4_83xx_rd_reg,
4093         .wr_reg_direct          = qla4_83xx_wr_reg,
4094         .rd_reg_indirect        = qla4_83xx_rd_reg_indirect,
4095         .wr_reg_indirect        = qla4_83xx_wr_reg_indirect,
4096         .idc_lock               = qla4_83xx_drv_lock,
4097         .idc_unlock             = qla4_83xx_drv_unlock,
4098         .rom_lock_recovery      = qla4_83xx_rom_lock_recovery,
4099         .queue_mailbox_command  = qla4_83xx_queue_mbox_cmd,
4100         .process_mailbox_interrupt = qla4_83xx_process_mbox_intr,
4101 };
4102
4103 uint16_t qla4xxx_rd_shdw_req_q_out(struct scsi_qla_host *ha)
4104 {
4105         return (uint16_t)le32_to_cpu(ha->shadow_regs->req_q_out);
4106 }
4107
4108 uint16_t qla4_82xx_rd_shdw_req_q_out(struct scsi_qla_host *ha)
4109 {
4110         return (uint16_t)le32_to_cpu(readl(&ha->qla4_82xx_reg->req_q_out));
4111 }
4112
4113 uint16_t qla4xxx_rd_shdw_rsp_q_in(struct scsi_qla_host *ha)
4114 {
4115         return (uint16_t)le32_to_cpu(ha->shadow_regs->rsp_q_in);
4116 }
4117
4118 uint16_t qla4_82xx_rd_shdw_rsp_q_in(struct scsi_qla_host *ha)
4119 {
4120         return (uint16_t)le32_to_cpu(readl(&ha->qla4_82xx_reg->rsp_q_in));
4121 }
4122
4123 static ssize_t qla4xxx_show_boot_eth_info(void *data, int type, char *buf)
4124 {
4125         struct scsi_qla_host *ha = data;
4126         char *str = buf;
4127         int rc;
4128
4129         switch (type) {
4130         case ISCSI_BOOT_ETH_FLAGS:
4131                 rc = sprintf(str, "%d\n", SYSFS_FLAG_FW_SEL_BOOT);
4132                 break;
4133         case ISCSI_BOOT_ETH_INDEX:
4134                 rc = sprintf(str, "0\n");
4135                 break;
4136         case ISCSI_BOOT_ETH_MAC:
4137                 rc = sysfs_format_mac(str, ha->my_mac,
4138                                       MAC_ADDR_LEN);
4139                 break;
4140         default:
4141                 rc = -ENOSYS;
4142                 break;
4143         }
4144         return rc;
4145 }
4146
4147 static umode_t qla4xxx_eth_get_attr_visibility(void *data, int type)
4148 {
4149         int rc;
4150
4151         switch (type) {
4152         case ISCSI_BOOT_ETH_FLAGS:
4153         case ISCSI_BOOT_ETH_MAC:
4154         case ISCSI_BOOT_ETH_INDEX:
4155                 rc = S_IRUGO;
4156                 break;
4157         default:
4158                 rc = 0;
4159                 break;
4160         }
4161         return rc;
4162 }
4163
4164 static ssize_t qla4xxx_show_boot_ini_info(void *data, int type, char *buf)
4165 {
4166         struct scsi_qla_host *ha = data;
4167         char *str = buf;
4168         int rc;
4169
4170         switch (type) {
4171         case ISCSI_BOOT_INI_INITIATOR_NAME:
4172                 rc = sprintf(str, "%s\n", ha->name_string);
4173                 break;
4174         default:
4175                 rc = -ENOSYS;
4176                 break;
4177         }
4178         return rc;
4179 }
4180
4181 static umode_t qla4xxx_ini_get_attr_visibility(void *data, int type)
4182 {
4183         int rc;
4184
4185         switch (type) {
4186         case ISCSI_BOOT_INI_INITIATOR_NAME:
4187                 rc = S_IRUGO;
4188                 break;
4189         default:
4190                 rc = 0;
4191                 break;
4192         }
4193         return rc;
4194 }
4195
4196 static ssize_t
4197 qla4xxx_show_boot_tgt_info(struct ql4_boot_session_info *boot_sess, int type,
4198                            char *buf)
4199 {
4200         struct ql4_conn_info *boot_conn = &boot_sess->conn_list[0];
4201         char *str = buf;
4202         int rc;
4203
4204         switch (type) {
4205         case ISCSI_BOOT_TGT_NAME:
4206                 rc = sprintf(buf, "%s\n", (char *)&boot_sess->target_name);
4207                 break;
4208         case ISCSI_BOOT_TGT_IP_ADDR:
4209                 if (boot_sess->conn_list[0].dest_ipaddr.ip_type == 0x1)
4210                         rc = sprintf(buf, "%pI4\n",
4211                                      &boot_conn->dest_ipaddr.ip_address);
4212                 else
4213                         rc = sprintf(str, "%pI6\n",
4214                                      &boot_conn->dest_ipaddr.ip_address);
4215                 break;
4216         case ISCSI_BOOT_TGT_PORT:
4217                         rc = sprintf(str, "%d\n", boot_conn->dest_port);
4218                 break;
4219         case ISCSI_BOOT_TGT_CHAP_NAME:
4220                 rc = sprintf(str,  "%.*s\n",
4221                              boot_conn->chap.target_chap_name_length,
4222                              (char *)&boot_conn->chap.target_chap_name);
4223                 break;
4224         case ISCSI_BOOT_TGT_CHAP_SECRET:
4225                 rc = sprintf(str,  "%.*s\n",
4226                              boot_conn->chap.target_secret_length,
4227                              (char *)&boot_conn->chap.target_secret);
4228                 break;
4229         case ISCSI_BOOT_TGT_REV_CHAP_NAME:
4230                 rc = sprintf(str,  "%.*s\n",
4231                              boot_conn->chap.intr_chap_name_length,
4232                              (char *)&boot_conn->chap.intr_chap_name);
4233                 break;
4234         case ISCSI_BOOT_TGT_REV_CHAP_SECRET:
4235                 rc = sprintf(str,  "%.*s\n",
4236                              boot_conn->chap.intr_secret_length,
4237                              (char *)&boot_conn->chap.intr_secret);
4238                 break;
4239         case ISCSI_BOOT_TGT_FLAGS:
4240                 rc = sprintf(str, "%d\n", SYSFS_FLAG_FW_SEL_BOOT);
4241                 break;
4242         case ISCSI_BOOT_TGT_NIC_ASSOC:
4243                 rc = sprintf(str, "0\n");
4244                 break;
4245         default:
4246                 rc = -ENOSYS;
4247                 break;
4248         }
4249         return rc;
4250 }
4251
4252 static ssize_t qla4xxx_show_boot_tgt_pri_info(void *data, int type, char *buf)
4253 {
4254         struct scsi_qla_host *ha = data;
4255         struct ql4_boot_session_info *boot_sess = &(ha->boot_tgt.boot_pri_sess);
4256
4257         return qla4xxx_show_boot_tgt_info(boot_sess, type, buf);
4258 }
4259
4260 static ssize_t qla4xxx_show_boot_tgt_sec_info(void *data, int type, char *buf)
4261 {
4262         struct scsi_qla_host *ha = data;
4263         struct ql4_boot_session_info *boot_sess = &(ha->boot_tgt.boot_sec_sess);
4264
4265         return qla4xxx_show_boot_tgt_info(boot_sess, type, buf);
4266 }
4267
4268 static umode_t qla4xxx_tgt_get_attr_visibility(void *data, int type)
4269 {
4270         int rc;
4271
4272         switch (type) {
4273         case ISCSI_BOOT_TGT_NAME:
4274         case ISCSI_BOOT_TGT_IP_ADDR:
4275         case ISCSI_BOOT_TGT_PORT:
4276         case ISCSI_BOOT_TGT_CHAP_NAME:
4277         case ISCSI_BOOT_TGT_CHAP_SECRET:
4278         case ISCSI_BOOT_TGT_REV_CHAP_NAME:
4279         case ISCSI_BOOT_TGT_REV_CHAP_SECRET:
4280         case ISCSI_BOOT_TGT_NIC_ASSOC:
4281         case ISCSI_BOOT_TGT_FLAGS:
4282                 rc = S_IRUGO;
4283                 break;
4284         default:
4285                 rc = 0;
4286                 break;
4287         }
4288         return rc;
4289 }
4290
4291 static void qla4xxx_boot_release(void *data)
4292 {
4293         struct scsi_qla_host *ha = data;
4294
4295         scsi_host_put(ha->host);
4296 }
4297
4298 static int get_fw_boot_info(struct scsi_qla_host *ha, uint16_t ddb_index[])
4299 {
4300         dma_addr_t buf_dma;
4301         uint32_t addr, pri_addr, sec_addr;
4302         uint32_t offset;
4303         uint16_t func_num;
4304         uint8_t val;
4305         uint8_t *buf = NULL;
4306         size_t size = 13 * sizeof(uint8_t);
4307         int ret = QLA_SUCCESS;
4308
4309         func_num = PCI_FUNC(ha->pdev->devfn);
4310
4311         ql4_printk(KERN_INFO, ha, "%s: Get FW boot info for 0x%x func %d\n",
4312                    __func__, ha->pdev->device, func_num);
4313
4314         if (is_qla40XX(ha)) {
4315                 if (func_num == 1) {
4316                         addr = NVRAM_PORT0_BOOT_MODE;
4317                         pri_addr = NVRAM_PORT0_BOOT_PRI_TGT;
4318                         sec_addr = NVRAM_PORT0_BOOT_SEC_TGT;
4319                 } else if (func_num == 3) {
4320                         addr = NVRAM_PORT1_BOOT_MODE;
4321                         pri_addr = NVRAM_PORT1_BOOT_PRI_TGT;
4322                         sec_addr = NVRAM_PORT1_BOOT_SEC_TGT;
4323                 } else {
4324                         ret = QLA_ERROR;
4325                         goto exit_boot_info;
4326                 }
4327
4328                 /* Check Boot Mode */
4329                 val = rd_nvram_byte(ha, addr);
4330                 if (!(val & 0x07)) {
4331                         DEBUG2(ql4_printk(KERN_INFO, ha, "%s: Adapter boot "
4332                                           "options : 0x%x\n", __func__, val));
4333                         ret = QLA_ERROR;
4334                         goto exit_boot_info;
4335                 }
4336
4337                 /* get primary valid target index */
4338                 val = rd_nvram_byte(ha, pri_addr);
4339                 if (val & BIT_7)
4340                         ddb_index[0] = (val & 0x7f);
4341
4342                 /* get secondary valid target index */
4343                 val = rd_nvram_byte(ha, sec_addr);
4344                 if (val & BIT_7)
4345                         ddb_index[1] = (val & 0x7f);
4346
4347         } else if (is_qla80XX(ha)) {
4348                 buf = dma_alloc_coherent(&ha->pdev->dev, size,
4349                                          &buf_dma, GFP_KERNEL);
4350                 if (!buf) {
4351                         DEBUG2(ql4_printk(KERN_ERR, ha,
4352                                           "%s: Unable to allocate dma buffer\n",
4353                                            __func__));
4354                         ret = QLA_ERROR;
4355                         goto exit_boot_info;
4356                 }
4357
4358                 if (ha->port_num == 0)
4359                         offset = BOOT_PARAM_OFFSET_PORT0;
4360                 else if (ha->port_num == 1)
4361                         offset = BOOT_PARAM_OFFSET_PORT1;
4362                 else {
4363                         ret = QLA_ERROR;
4364                         goto exit_boot_info_free;
4365                 }
4366                 addr = FLASH_RAW_ACCESS_ADDR + (ha->hw.flt_iscsi_param * 4) +
4367                        offset;
4368                 if (qla4xxx_get_flash(ha, buf_dma, addr,
4369                                       13 * sizeof(uint8_t)) != QLA_SUCCESS) {
4370                         DEBUG2(ql4_printk(KERN_ERR, ha, "scsi%ld: %s: Get Flash"
4371                                           " failed\n", ha->host_no, __func__));
4372                         ret = QLA_ERROR;
4373                         goto exit_boot_info_free;
4374                 }
4375                 /* Check Boot Mode */
4376                 if (!(buf[1] & 0x07)) {
4377                         DEBUG2(ql4_printk(KERN_INFO, ha, "Firmware boot options"
4378                                           " : 0x%x\n", buf[1]));
4379                         ret = QLA_ERROR;
4380                         goto exit_boot_info_free;
4381                 }
4382
4383                 /* get primary valid target index */
4384                 if (buf[2] & BIT_7)
4385                         ddb_index[0] = buf[2] & 0x7f;
4386
4387                 /* get secondary valid target index */
4388                 if (buf[11] & BIT_7)
4389                         ddb_index[1] = buf[11] & 0x7f;
4390         } else {
4391                 ret = QLA_ERROR;
4392                 goto exit_boot_info;
4393         }
4394
4395         DEBUG2(ql4_printk(KERN_INFO, ha, "%s: Primary target ID %d, Secondary"
4396                           " target ID %d\n", __func__, ddb_index[0],
4397                           ddb_index[1]));
4398
4399 exit_boot_info_free:
4400         dma_free_coherent(&ha->pdev->dev, size, buf, buf_dma);
4401 exit_boot_info:
4402         ha->pri_ddb_idx = ddb_index[0];
4403         ha->sec_ddb_idx = ddb_index[1];
4404         return ret;
4405 }
4406
4407 /**
4408  * qla4xxx_get_bidi_chap - Get a BIDI CHAP user and password
4409  * @ha: pointer to adapter structure
4410  * @username: CHAP username to be returned
4411  * @password: CHAP password to be returned
4412  *
4413  * If a boot entry has BIDI CHAP enabled then we need to set the BIDI CHAP
4414  * user and password in the sysfs entry in /sys/firmware/iscsi_boot#/.
4415  * So from the CHAP cache find the first BIDI CHAP entry and set it
4416  * to the boot record in sysfs.
4417  **/
4418 static int qla4xxx_get_bidi_chap(struct scsi_qla_host *ha, char *username,
4419                             char *password)
4420 {
4421         int i, ret = -EINVAL;
4422         int max_chap_entries = 0;
4423         struct ql4_chap_table *chap_table;
4424
4425         if (is_qla80XX(ha))
4426                 max_chap_entries = (ha->hw.flt_chap_size / 2) /
4427                                                 sizeof(struct ql4_chap_table);
4428         else
4429                 max_chap_entries = MAX_CHAP_ENTRIES_40XX;
4430
4431         if (!ha->chap_list) {
4432                 ql4_printk(KERN_ERR, ha, "Do not have CHAP table cache\n");
4433                 return ret;
4434         }
4435
4436         mutex_lock(&ha->chap_sem);
4437         for (i = 0; i < max_chap_entries; i++) {
4438                 chap_table = (struct ql4_chap_table *)ha->chap_list + i;
4439                 if (chap_table->cookie !=
4440                     __constant_cpu_to_le16(CHAP_VALID_COOKIE)) {
4441                         continue;
4442                 }
4443
4444                 if (chap_table->flags & BIT_7) /* local */
4445                         continue;
4446
4447                 if (!(chap_table->flags & BIT_6)) /* Not BIDI */
4448                         continue;
4449
4450                 strncpy(password, chap_table->secret, QL4_CHAP_MAX_SECRET_LEN);
4451                 strncpy(username, chap_table->name, QL4_CHAP_MAX_NAME_LEN);
4452                 ret = 0;
4453                 break;
4454         }
4455         mutex_unlock(&ha->chap_sem);
4456
4457         return ret;
4458 }
4459
4460
4461 static int qla4xxx_get_boot_target(struct scsi_qla_host *ha,
4462                                    struct ql4_boot_session_info *boot_sess,
4463                                    uint16_t ddb_index)
4464 {
4465         struct ql4_conn_info *boot_conn = &boot_sess->conn_list[0];
4466         struct dev_db_entry *fw_ddb_entry;
4467         dma_addr_t fw_ddb_entry_dma;
4468         uint16_t idx;
4469         uint16_t options;
4470         int ret = QLA_SUCCESS;
4471
4472         fw_ddb_entry = dma_alloc_coherent(&ha->pdev->dev, sizeof(*fw_ddb_entry),
4473                                           &fw_ddb_entry_dma, GFP_KERNEL);
4474         if (!fw_ddb_entry) {
4475                 DEBUG2(ql4_printk(KERN_ERR, ha,
4476                                   "%s: Unable to allocate dma buffer.\n",
4477                                   __func__));
4478                 ret = QLA_ERROR;
4479                 return ret;
4480         }
4481
4482         if (qla4xxx_bootdb_by_index(ha, fw_ddb_entry,
4483                                    fw_ddb_entry_dma, ddb_index)) {
4484                 DEBUG2(ql4_printk(KERN_INFO, ha, "%s: No Flash DDB found at "
4485                                   "index [%d]\n", __func__, ddb_index));
4486                 ret = QLA_ERROR;
4487                 goto exit_boot_target;
4488         }
4489
4490         /* Update target name and IP from DDB */
4491         memcpy(boot_sess->target_name, fw_ddb_entry->iscsi_name,
4492                min(sizeof(boot_sess->target_name),
4493                    sizeof(fw_ddb_entry->iscsi_name)));
4494
4495         options = le16_to_cpu(fw_ddb_entry->options);
4496         if (options & DDB_OPT_IPV6_DEVICE) {
4497                 memcpy(&boot_conn->dest_ipaddr.ip_address,
4498                        &fw_ddb_entry->ip_addr[0], IPv6_ADDR_LEN);
4499         } else {
4500                 boot_conn->dest_ipaddr.ip_type = 0x1;
4501                 memcpy(&boot_conn->dest_ipaddr.ip_address,
4502                        &fw_ddb_entry->ip_addr[0], IP_ADDR_LEN);
4503         }
4504
4505         boot_conn->dest_port = le16_to_cpu(fw_ddb_entry->port);
4506
4507         /* update chap information */
4508         idx = __le16_to_cpu(fw_ddb_entry->chap_tbl_idx);
4509
4510         if (BIT_7 & le16_to_cpu(fw_ddb_entry->iscsi_options))   {
4511
4512                 DEBUG2(ql4_printk(KERN_INFO, ha, "Setting chap\n"));
4513
4514                 ret = qla4xxx_get_chap(ha, (char *)&boot_conn->chap.
4515                                        target_chap_name,
4516                                        (char *)&boot_conn->chap.target_secret,
4517                                        idx);
4518                 if (ret) {
4519                         ql4_printk(KERN_ERR, ha, "Failed to set chap\n");
4520                         ret = QLA_ERROR;
4521                         goto exit_boot_target;
4522                 }
4523
4524                 boot_conn->chap.target_chap_name_length = QL4_CHAP_MAX_NAME_LEN;
4525                 boot_conn->chap.target_secret_length = QL4_CHAP_MAX_SECRET_LEN;
4526         }
4527
4528         if (BIT_4 & le16_to_cpu(fw_ddb_entry->iscsi_options)) {
4529
4530                 DEBUG2(ql4_printk(KERN_INFO, ha, "Setting BIDI chap\n"));
4531
4532                 ret = qla4xxx_get_bidi_chap(ha,
4533                                     (char *)&boot_conn->chap.intr_chap_name,
4534                                     (char *)&boot_conn->chap.intr_secret);
4535
4536                 if (ret) {
4537                         ql4_printk(KERN_ERR, ha, "Failed to set BIDI chap\n");
4538                         ret = QLA_ERROR;
4539                         goto exit_boot_target;
4540                 }
4541
4542                 boot_conn->chap.intr_chap_name_length = QL4_CHAP_MAX_NAME_LEN;
4543                 boot_conn->chap.intr_secret_length = QL4_CHAP_MAX_SECRET_LEN;
4544         }
4545
4546 exit_boot_target:
4547         dma_free_coherent(&ha->pdev->dev, sizeof(*fw_ddb_entry),
4548                           fw_ddb_entry, fw_ddb_entry_dma);
4549         return ret;
4550 }
4551
4552 static int qla4xxx_get_boot_info(struct scsi_qla_host *ha)
4553 {
4554         uint16_t ddb_index[2];
4555         int ret = QLA_ERROR;
4556         int rval;
4557
4558         memset(ddb_index, 0, sizeof(ddb_index));
4559         ddb_index[0] = 0xffff;
4560         ddb_index[1] = 0xffff;
4561         ret = get_fw_boot_info(ha, ddb_index);
4562         if (ret != QLA_SUCCESS) {
4563                 DEBUG2(ql4_printk(KERN_INFO, ha,
4564                                 "%s: No boot target configured.\n", __func__));
4565                 return ret;
4566         }
4567
4568         if (ql4xdisablesysfsboot)
4569                 return QLA_SUCCESS;
4570
4571         if (ddb_index[0] == 0xffff)
4572                 goto sec_target;
4573
4574         rval = qla4xxx_get_boot_target(ha, &(ha->boot_tgt.boot_pri_sess),
4575                                       ddb_index[0]);
4576         if (rval != QLA_SUCCESS) {
4577                 DEBUG2(ql4_printk(KERN_INFO, ha, "%s: Primary boot target not "
4578                                   "configured\n", __func__));
4579         } else
4580                 ret = QLA_SUCCESS;
4581
4582 sec_target:
4583         if (ddb_index[1] == 0xffff)
4584                 goto exit_get_boot_info;
4585
4586         rval = qla4xxx_get_boot_target(ha, &(ha->boot_tgt.boot_sec_sess),
4587                                       ddb_index[1]);
4588         if (rval != QLA_SUCCESS) {
4589                 DEBUG2(ql4_printk(KERN_INFO, ha, "%s: Secondary boot target not"
4590                                   " configured\n", __func__));
4591         } else
4592                 ret = QLA_SUCCESS;
4593
4594 exit_get_boot_info:
4595         return ret;
4596 }
4597
4598 static int qla4xxx_setup_boot_info(struct scsi_qla_host *ha)
4599 {
4600         struct iscsi_boot_kobj *boot_kobj;
4601
4602         if (qla4xxx_get_boot_info(ha) != QLA_SUCCESS)
4603                 return QLA_ERROR;
4604
4605         if (ql4xdisablesysfsboot) {
4606                 ql4_printk(KERN_INFO, ha,
4607                            "%s: syfsboot disabled - driver will trigger login "
4608                            "and publish session for discovery .\n", __func__);
4609                 return QLA_SUCCESS;
4610         }
4611
4612
4613         ha->boot_kset = iscsi_boot_create_host_kset(ha->host->host_no);
4614         if (!ha->boot_kset)
4615                 goto kset_free;
4616
4617         if (!scsi_host_get(ha->host))
4618                 goto kset_free;
4619         boot_kobj = iscsi_boot_create_target(ha->boot_kset, 0, ha,
4620                                              qla4xxx_show_boot_tgt_pri_info,
4621                                              qla4xxx_tgt_get_attr_visibility,
4622                                              qla4xxx_boot_release);
4623         if (!boot_kobj)
4624                 goto put_host;
4625
4626         if (!scsi_host_get(ha->host))
4627                 goto kset_free;
4628         boot_kobj = iscsi_boot_create_target(ha->boot_kset, 1, ha,
4629                                              qla4xxx_show_boot_tgt_sec_info,
4630                                              qla4xxx_tgt_get_attr_visibility,
4631                                              qla4xxx_boot_release);
4632         if (!boot_kobj)
4633                 goto put_host;
4634
4635         if (!scsi_host_get(ha->host))
4636                 goto kset_free;
4637         boot_kobj = iscsi_boot_create_initiator(ha->boot_kset, 0, ha,
4638                                                qla4xxx_show_boot_ini_info,
4639                                                qla4xxx_ini_get_attr_visibility,
4640                                                qla4xxx_boot_release);
4641         if (!boot_kobj)
4642                 goto put_host;
4643
4644         if (!scsi_host_get(ha->host))
4645                 goto kset_free;
4646         boot_kobj = iscsi_boot_create_ethernet(ha->boot_kset, 0, ha,
4647                                                qla4xxx_show_boot_eth_info,
4648                                                qla4xxx_eth_get_attr_visibility,
4649                                                qla4xxx_boot_release);
4650         if (!boot_kobj)
4651                 goto put_host;
4652
4653         return QLA_SUCCESS;
4654
4655 put_host:
4656         scsi_host_put(ha->host);
4657 kset_free:
4658         iscsi_boot_destroy_kset(ha->boot_kset);
4659         return -ENOMEM;
4660 }
4661
4662
4663 /**
4664  * qla4xxx_create chap_list - Create CHAP list from FLASH
4665  * @ha: pointer to adapter structure
4666  *
4667  * Read flash and make a list of CHAP entries, during login when a CHAP entry
4668  * is received, it will be checked in this list. If entry exist then the CHAP
4669  * entry index is set in the DDB. If CHAP entry does not exist in this list
4670  * then a new entry is added in FLASH in CHAP table and the index obtained is
4671  * used in the DDB.
4672  **/
4673 static void qla4xxx_create_chap_list(struct scsi_qla_host *ha)
4674 {
4675         int rval = 0;
4676         uint8_t *chap_flash_data = NULL;
4677         uint32_t offset;
4678         dma_addr_t chap_dma;
4679         uint32_t chap_size = 0;
4680
4681         if (is_qla40XX(ha))
4682                 chap_size = MAX_CHAP_ENTRIES_40XX  *
4683                                         sizeof(struct ql4_chap_table);
4684         else    /* Single region contains CHAP info for both
4685                  * ports which is divided into half for each port.
4686                  */
4687                 chap_size = ha->hw.flt_chap_size / 2;
4688
4689         chap_flash_data = dma_alloc_coherent(&ha->pdev->dev, chap_size,
4690                                           &chap_dma, GFP_KERNEL);
4691         if (!chap_flash_data) {
4692                 ql4_printk(KERN_ERR, ha, "No memory for chap_flash_data\n");
4693                 return;
4694         }
4695         if (is_qla40XX(ha))
4696                 offset = FLASH_CHAP_OFFSET;
4697         else {
4698                 offset = FLASH_RAW_ACCESS_ADDR + (ha->hw.flt_region_chap << 2);
4699                 if (ha->port_num == 1)
4700                         offset += chap_size;
4701         }
4702
4703         rval = qla4xxx_get_flash(ha, chap_dma, offset, chap_size);
4704         if (rval != QLA_SUCCESS)
4705                 goto exit_chap_list;
4706
4707         if (ha->chap_list == NULL)
4708                 ha->chap_list = vmalloc(chap_size);
4709         if (ha->chap_list == NULL) {
4710                 ql4_printk(KERN_ERR, ha, "No memory for ha->chap_list\n");
4711                 goto exit_chap_list;
4712         }
4713
4714         memcpy(ha->chap_list, chap_flash_data, chap_size);
4715
4716 exit_chap_list:
4717         dma_free_coherent(&ha->pdev->dev, chap_size,
4718                         chap_flash_data, chap_dma);
4719 }
4720
4721 static void qla4xxx_get_param_ddb(struct ddb_entry *ddb_entry,
4722                                   struct ql4_tuple_ddb *tddb)
4723 {
4724         struct scsi_qla_host *ha;
4725         struct iscsi_cls_session *cls_sess;
4726         struct iscsi_cls_conn *cls_conn;
4727         struct iscsi_session *sess;
4728         struct iscsi_conn *conn;
4729
4730         DEBUG2(printk(KERN_INFO "Func: %s\n", __func__));
4731         ha = ddb_entry->ha;
4732         cls_sess = ddb_entry->sess;
4733         sess = cls_sess->dd_data;
4734         cls_conn = ddb_entry->conn;
4735         conn = cls_conn->dd_data;
4736
4737         tddb->tpgt = sess->tpgt;
4738         tddb->port = conn->persistent_port;
4739         strncpy(tddb->iscsi_name, sess->targetname, ISCSI_NAME_SIZE);
4740         strncpy(tddb->ip_addr, conn->persistent_address, DDB_IPADDR_LEN);
4741 }
4742
4743 static void qla4xxx_convert_param_ddb(struct dev_db_entry *fw_ddb_entry,
4744                                       struct ql4_tuple_ddb *tddb,
4745                                       uint8_t *flash_isid)
4746 {
4747         uint16_t options = 0;
4748
4749         tddb->tpgt = le32_to_cpu(fw_ddb_entry->tgt_portal_grp);
4750         memcpy(&tddb->iscsi_name[0], &fw_ddb_entry->iscsi_name[0],
4751                min(sizeof(tddb->iscsi_name), sizeof(fw_ddb_entry->iscsi_name)));
4752
4753         options = le16_to_cpu(fw_ddb_entry->options);
4754         if (options & DDB_OPT_IPV6_DEVICE)
4755                 sprintf(tddb->ip_addr, "%pI6", fw_ddb_entry->ip_addr);
4756         else
4757                 sprintf(tddb->ip_addr, "%pI4", fw_ddb_entry->ip_addr);
4758
4759         tddb->port = le16_to_cpu(fw_ddb_entry->port);
4760
4761         if (flash_isid == NULL)
4762                 memcpy(&tddb->isid[0], &fw_ddb_entry->isid[0],
4763                        sizeof(tddb->isid));
4764         else
4765                 memcpy(&tddb->isid[0], &flash_isid[0], sizeof(tddb->isid));
4766 }
4767
4768 static int qla4xxx_compare_tuple_ddb(struct scsi_qla_host *ha,
4769                                      struct ql4_tuple_ddb *old_tddb,
4770                                      struct ql4_tuple_ddb *new_tddb,
4771                                      uint8_t is_isid_compare)
4772 {
4773         if (strcmp(old_tddb->iscsi_name, new_tddb->iscsi_name))
4774                 return QLA_ERROR;
4775
4776         if (strcmp(old_tddb->ip_addr, new_tddb->ip_addr))
4777                 return QLA_ERROR;
4778
4779         if (old_tddb->port != new_tddb->port)
4780                 return QLA_ERROR;
4781
4782         /* For multi sessions, driver generates the ISID, so do not compare
4783          * ISID in reset path since it would be a comparison between the
4784          * driver generated ISID and firmware generated ISID. This could
4785          * lead to adding duplicated DDBs in the list as driver generated
4786          * ISID would not match firmware generated ISID.
4787          */
4788         if (is_isid_compare) {
4789                 DEBUG2(ql4_printk(KERN_INFO, ha, "%s: old ISID [%02x%02x%02x"
4790                         "%02x%02x%02x] New ISID [%02x%02x%02x%02x%02x%02x]\n",
4791                         __func__, old_tddb->isid[5], old_tddb->isid[4],
4792                         old_tddb->isid[3], old_tddb->isid[2], old_tddb->isid[1],
4793                         old_tddb->isid[0], new_tddb->isid[5], new_tddb->isid[4],
4794                         new_tddb->isid[3], new_tddb->isid[2], new_tddb->isid[1],
4795                         new_tddb->isid[0]));
4796
4797                 if (memcmp(&old_tddb->isid[0], &new_tddb->isid[0],
4798                            sizeof(old_tddb->isid)))
4799                         return QLA_ERROR;
4800         }
4801
4802         DEBUG2(ql4_printk(KERN_INFO, ha,
4803                           "Match Found, fw[%d,%d,%s,%s], [%d,%d,%s,%s]",
4804                           old_tddb->port, old_tddb->tpgt, old_tddb->ip_addr,
4805                           old_tddb->iscsi_name, new_tddb->port, new_tddb->tpgt,
4806                           new_tddb->ip_addr, new_tddb->iscsi_name));
4807
4808         return QLA_SUCCESS;
4809 }
4810
4811 static int qla4xxx_is_session_exists(struct scsi_qla_host *ha,
4812                                      struct dev_db_entry *fw_ddb_entry)
4813 {
4814         struct ddb_entry *ddb_entry;
4815         struct ql4_tuple_ddb *fw_tddb = NULL;
4816         struct ql4_tuple_ddb *tmp_tddb = NULL;
4817         int idx;
4818         int ret = QLA_ERROR;
4819
4820         fw_tddb = vzalloc(sizeof(*fw_tddb));
4821         if (!fw_tddb) {
4822                 DEBUG2(ql4_printk(KERN_WARNING, ha,
4823                                   "Memory Allocation failed.\n"));
4824                 ret = QLA_SUCCESS;
4825                 goto exit_check;
4826         }
4827
4828         tmp_tddb = vzalloc(sizeof(*tmp_tddb));
4829         if (!tmp_tddb) {
4830                 DEBUG2(ql4_printk(KERN_WARNING, ha,
4831                                   "Memory Allocation failed.\n"));
4832                 ret = QLA_SUCCESS;
4833                 goto exit_check;
4834         }
4835
4836         qla4xxx_convert_param_ddb(fw_ddb_entry, fw_tddb, NULL);
4837
4838         for (idx = 0; idx < MAX_DDB_ENTRIES; idx++) {
4839                 ddb_entry = qla4xxx_lookup_ddb_by_fw_index(ha, idx);
4840                 if (ddb_entry == NULL)
4841                         continue;
4842
4843                 qla4xxx_get_param_ddb(ddb_entry, tmp_tddb);
4844                 if (!qla4xxx_compare_tuple_ddb(ha, fw_tddb, tmp_tddb, false)) {
4845                         ret = QLA_SUCCESS; /* found */
4846                         goto exit_check;
4847                 }
4848         }
4849
4850 exit_check:
4851         if (fw_tddb)
4852                 vfree(fw_tddb);
4853         if (tmp_tddb)
4854                 vfree(tmp_tddb);
4855         return ret;
4856 }
4857
4858 /**
4859  * qla4xxx_check_existing_isid - check if target with same isid exist
4860  *                               in target list
4861  * @list_nt: list of target
4862  * @isid: isid to check
4863  *
4864  * This routine return QLA_SUCCESS if target with same isid exist
4865  **/
4866 static int qla4xxx_check_existing_isid(struct list_head *list_nt, uint8_t *isid)
4867 {
4868         struct qla_ddb_index *nt_ddb_idx, *nt_ddb_idx_tmp;
4869         struct dev_db_entry *fw_ddb_entry;
4870
4871         list_for_each_entry_safe(nt_ddb_idx, nt_ddb_idx_tmp, list_nt, list) {
4872                 fw_ddb_entry = &nt_ddb_idx->fw_ddb;
4873
4874                 if (memcmp(&fw_ddb_entry->isid[0], &isid[0],
4875                            sizeof(nt_ddb_idx->fw_ddb.isid)) == 0) {
4876                         return QLA_SUCCESS;
4877                 }
4878         }
4879         return QLA_ERROR;
4880 }
4881
4882 /**
4883  * qla4xxx_update_isid - compare ddbs and updated isid
4884  * @ha: Pointer to host adapter structure.
4885  * @list_nt: list of nt target
4886  * @fw_ddb_entry: firmware ddb entry
4887  *
4888  * This routine update isid if ddbs have same iqn, same isid and
4889  * different IP addr.
4890  * Return QLA_SUCCESS if isid is updated.
4891  **/
4892 static int qla4xxx_update_isid(struct scsi_qla_host *ha,
4893                                struct list_head *list_nt,
4894                                struct dev_db_entry *fw_ddb_entry)
4895 {
4896         uint8_t base_value, i;
4897
4898         base_value = fw_ddb_entry->isid[1] & 0x1f;
4899         for (i = 0; i < 8; i++) {
4900                 fw_ddb_entry->isid[1] = (base_value | (i << 5));
4901                 if (qla4xxx_check_existing_isid(list_nt, fw_ddb_entry->isid))
4902                         break;
4903         }
4904
4905         if (!qla4xxx_check_existing_isid(list_nt, fw_ddb_entry->isid))
4906                 return QLA_ERROR;
4907
4908         return QLA_SUCCESS;
4909 }
4910
4911 /**
4912  * qla4xxx_should_update_isid - check if isid need to update
4913  * @ha: Pointer to host adapter structure.
4914  * @old_tddb: ddb tuple
4915  * @new_tddb: ddb tuple
4916  *
4917  * Return QLA_SUCCESS if different IP, different PORT, same iqn,
4918  * same isid
4919  **/
4920 static int qla4xxx_should_update_isid(struct scsi_qla_host *ha,
4921                                       struct ql4_tuple_ddb *old_tddb,
4922                                       struct ql4_tuple_ddb *new_tddb)
4923 {
4924         if (strcmp(old_tddb->ip_addr, new_tddb->ip_addr) == 0) {
4925                 /* Same ip */
4926                 if (old_tddb->port == new_tddb->port)
4927                         return QLA_ERROR;
4928         }
4929
4930         if (strcmp(old_tddb->iscsi_name, new_tddb->iscsi_name))
4931                 /* different iqn */
4932                 return QLA_ERROR;
4933
4934         if (memcmp(&old_tddb->isid[0], &new_tddb->isid[0],
4935                    sizeof(old_tddb->isid)))
4936                 /* different isid */
4937                 return QLA_ERROR;
4938
4939         return QLA_SUCCESS;
4940 }
4941
4942 /**
4943  * qla4xxx_is_flash_ddb_exists - check if fw_ddb_entry already exists in list_nt
4944  * @ha: Pointer to host adapter structure.
4945  * @list_nt: list of nt target.
4946  * @fw_ddb_entry: firmware ddb entry.
4947  *
4948  * This routine check if fw_ddb_entry already exists in list_nt to avoid
4949  * duplicate ddb in list_nt.
4950  * Return QLA_SUCCESS if duplicate ddb exit in list_nl.
4951  * Note: This function also update isid of DDB if required.
4952  **/
4953
4954 static int qla4xxx_is_flash_ddb_exists(struct scsi_qla_host *ha,
4955                                        struct list_head *list_nt,
4956                                        struct dev_db_entry *fw_ddb_entry)
4957 {
4958         struct qla_ddb_index  *nt_ddb_idx, *nt_ddb_idx_tmp;
4959         struct ql4_tuple_ddb *fw_tddb = NULL;
4960         struct ql4_tuple_ddb *tmp_tddb = NULL;
4961         int rval, ret = QLA_ERROR;
4962
4963         fw_tddb = vzalloc(sizeof(*fw_tddb));
4964         if (!fw_tddb) {
4965                 DEBUG2(ql4_printk(KERN_WARNING, ha,
4966                                   "Memory Allocation failed.\n"));
4967                 ret = QLA_SUCCESS;
4968                 goto exit_check;
4969         }
4970
4971         tmp_tddb = vzalloc(sizeof(*tmp_tddb));
4972         if (!tmp_tddb) {
4973                 DEBUG2(ql4_printk(KERN_WARNING, ha,
4974                                   "Memory Allocation failed.\n"));
4975                 ret = QLA_SUCCESS;
4976                 goto exit_check;
4977         }
4978
4979         qla4xxx_convert_param_ddb(fw_ddb_entry, fw_tddb, NULL);
4980
4981         list_for_each_entry_safe(nt_ddb_idx, nt_ddb_idx_tmp, list_nt, list) {
4982                 qla4xxx_convert_param_ddb(&nt_ddb_idx->fw_ddb, tmp_tddb,
4983                                           nt_ddb_idx->flash_isid);
4984                 ret = qla4xxx_compare_tuple_ddb(ha, fw_tddb, tmp_tddb, true);
4985                 /* found duplicate ddb */
4986                 if (ret == QLA_SUCCESS)
4987                         goto exit_check;
4988         }
4989
4990         list_for_each_entry_safe(nt_ddb_idx, nt_ddb_idx_tmp, list_nt, list) {
4991                 qla4xxx_convert_param_ddb(&nt_ddb_idx->fw_ddb, tmp_tddb, NULL);
4992
4993                 ret = qla4xxx_should_update_isid(ha, tmp_tddb, fw_tddb);
4994                 if (ret == QLA_SUCCESS) {
4995                         rval = qla4xxx_update_isid(ha, list_nt, fw_ddb_entry);
4996                         if (rval == QLA_SUCCESS)
4997                                 ret = QLA_ERROR;
4998                         else
4999                                 ret = QLA_SUCCESS;
5000
5001                         goto exit_check;
5002                 }
5003         }
5004
5005 exit_check:
5006         if (fw_tddb)
5007                 vfree(fw_tddb);
5008         if (tmp_tddb)
5009                 vfree(tmp_tddb);
5010         return ret;
5011 }
5012
5013 static void qla4xxx_free_ddb_list(struct list_head *list_ddb)
5014 {
5015         struct qla_ddb_index  *ddb_idx, *ddb_idx_tmp;
5016
5017         list_for_each_entry_safe(ddb_idx, ddb_idx_tmp, list_ddb, list) {
5018                 list_del_init(&ddb_idx->list);
5019                 vfree(ddb_idx);
5020         }
5021 }
5022
5023 static struct iscsi_endpoint *qla4xxx_get_ep_fwdb(struct scsi_qla_host *ha,
5024                                         struct dev_db_entry *fw_ddb_entry)
5025 {
5026         struct iscsi_endpoint *ep;
5027         struct sockaddr_in *addr;
5028         struct sockaddr_in6 *addr6;
5029         struct sockaddr *t_addr;
5030         struct sockaddr_storage *dst_addr;
5031         char *ip;
5032
5033         /* TODO: need to destroy on unload iscsi_endpoint*/
5034         dst_addr = vmalloc(sizeof(*dst_addr));
5035         if (!dst_addr)
5036                 return NULL;
5037
5038         if (fw_ddb_entry->options & DDB_OPT_IPV6_DEVICE) {
5039                 t_addr = (struct sockaddr *)dst_addr;
5040                 t_addr->sa_family = AF_INET6;
5041                 addr6 = (struct sockaddr_in6 *)dst_addr;
5042                 ip = (char *)&addr6->sin6_addr;
5043                 memcpy(ip, fw_ddb_entry->ip_addr, IPv6_ADDR_LEN);
5044                 addr6->sin6_port = htons(le16_to_cpu(fw_ddb_entry->port));
5045
5046         } else {
5047                 t_addr = (struct sockaddr *)dst_addr;
5048                 t_addr->sa_family = AF_INET;
5049                 addr = (struct sockaddr_in *)dst_addr;
5050                 ip = (char *)&addr->sin_addr;
5051                 memcpy(ip, fw_ddb_entry->ip_addr, IP_ADDR_LEN);
5052                 addr->sin_port = htons(le16_to_cpu(fw_ddb_entry->port));
5053         }
5054
5055         ep = qla4xxx_ep_connect(ha->host, (struct sockaddr *)dst_addr, 0);
5056         vfree(dst_addr);
5057         return ep;
5058 }
5059
5060 static int qla4xxx_verify_boot_idx(struct scsi_qla_host *ha, uint16_t idx)
5061 {
5062         if (ql4xdisablesysfsboot)
5063                 return QLA_SUCCESS;
5064         if (idx == ha->pri_ddb_idx || idx == ha->sec_ddb_idx)
5065                 return QLA_ERROR;
5066         return QLA_SUCCESS;
5067 }
5068
5069 static void qla4xxx_setup_flash_ddb_entry(struct scsi_qla_host *ha,
5070                                           struct ddb_entry *ddb_entry,
5071                                           uint16_t idx)
5072 {
5073         uint16_t def_timeout;
5074
5075         ddb_entry->ddb_type = FLASH_DDB;
5076         ddb_entry->fw_ddb_index = INVALID_ENTRY;
5077         ddb_entry->fw_ddb_device_state = DDB_DS_NO_CONNECTION_ACTIVE;
5078         ddb_entry->ha = ha;
5079         ddb_entry->unblock_sess = qla4xxx_unblock_flash_ddb;
5080         ddb_entry->ddb_change = qla4xxx_flash_ddb_change;
5081
5082         atomic_set(&ddb_entry->retry_relogin_timer, INVALID_ENTRY);
5083         atomic_set(&ddb_entry->relogin_timer, 0);
5084         atomic_set(&ddb_entry->relogin_retry_count, 0);
5085         def_timeout = le16_to_cpu(ddb_entry->fw_ddb_entry.def_timeout);
5086         ddb_entry->default_relogin_timeout =
5087                 (def_timeout > LOGIN_TOV) && (def_timeout < LOGIN_TOV * 10) ?
5088                 def_timeout : LOGIN_TOV;
5089         ddb_entry->default_time2wait =
5090                 le16_to_cpu(ddb_entry->fw_ddb_entry.iscsi_def_time2wait);
5091
5092         if (ql4xdisablesysfsboot &&
5093             (idx == ha->pri_ddb_idx || idx == ha->sec_ddb_idx))
5094                 set_bit(DF_BOOT_TGT, &ddb_entry->flags);
5095 }
5096
5097 static void qla4xxx_wait_for_ip_configuration(struct scsi_qla_host *ha)
5098 {
5099         uint32_t idx = 0;
5100         uint32_t ip_idx[IP_ADDR_COUNT] = {0, 1, 2, 3}; /* 4 IP interfaces */
5101         uint32_t sts[MBOX_REG_COUNT];
5102         uint32_t ip_state;
5103         unsigned long wtime;
5104         int ret;
5105
5106         wtime = jiffies + (HZ * IP_CONFIG_TOV);
5107         do {
5108                 for (idx = 0; idx < IP_ADDR_COUNT; idx++) {
5109                         if (ip_idx[idx] == -1)
5110                                 continue;
5111
5112                         ret = qla4xxx_get_ip_state(ha, 0, ip_idx[idx], sts);
5113
5114                         if (ret == QLA_ERROR) {
5115                                 ip_idx[idx] = -1;
5116                                 continue;
5117                         }
5118
5119                         ip_state = (sts[1] & IP_STATE_MASK) >> IP_STATE_SHIFT;
5120
5121                         DEBUG2(ql4_printk(KERN_INFO, ha,
5122                                           "Waiting for IP state for idx = %d, state = 0x%x\n",
5123                                           ip_idx[idx], ip_state));
5124                         if (ip_state == IP_ADDRSTATE_UNCONFIGURED ||
5125                             ip_state == IP_ADDRSTATE_INVALID ||
5126                             ip_state == IP_ADDRSTATE_PREFERRED ||
5127                             ip_state == IP_ADDRSTATE_DEPRICATED ||
5128                             ip_state == IP_ADDRSTATE_DISABLING)
5129                                 ip_idx[idx] = -1;
5130                 }
5131
5132                 /* Break if all IP states checked */
5133                 if ((ip_idx[0] == -1) &&
5134                     (ip_idx[1] == -1) &&
5135                     (ip_idx[2] == -1) &&
5136                     (ip_idx[3] == -1))
5137                         break;
5138                 schedule_timeout_uninterruptible(HZ);
5139         } while (time_after(wtime, jiffies));
5140 }
5141
5142 static void qla4xxx_build_st_list(struct scsi_qla_host *ha,
5143                                   struct list_head *list_st)
5144 {
5145         struct qla_ddb_index  *st_ddb_idx;
5146         int max_ddbs;
5147         int fw_idx_size;
5148         struct dev_db_entry *fw_ddb_entry;
5149         dma_addr_t fw_ddb_dma;
5150         int ret;
5151         uint32_t idx = 0, next_idx = 0;
5152         uint32_t state = 0, conn_err = 0;
5153         uint16_t conn_id = 0;
5154
5155         fw_ddb_entry = dma_pool_alloc(ha->fw_ddb_dma_pool, GFP_KERNEL,
5156                                       &fw_ddb_dma);
5157         if (fw_ddb_entry == NULL) {
5158                 DEBUG2(ql4_printk(KERN_ERR, ha, "Out of memory\n"));
5159                 goto exit_st_list;
5160         }
5161
5162         max_ddbs =  is_qla40XX(ha) ? MAX_DEV_DB_ENTRIES_40XX :
5163                                      MAX_DEV_DB_ENTRIES;
5164         fw_idx_size = sizeof(struct qla_ddb_index);
5165
5166         for (idx = 0; idx < max_ddbs; idx = next_idx) {
5167                 ret = qla4xxx_get_fwddb_entry(ha, idx, fw_ddb_entry, fw_ddb_dma,
5168                                               NULL, &next_idx, &state,
5169                                               &conn_err, NULL, &conn_id);
5170                 if (ret == QLA_ERROR)
5171                         break;
5172
5173                 /* Ignore DDB if invalid state (unassigned) */
5174                 if (state == DDB_DS_UNASSIGNED)
5175                         goto continue_next_st;
5176
5177                 /* Check if ST, add to the list_st */
5178                 if (strlen((char *) fw_ddb_entry->iscsi_name) != 0)
5179                         goto continue_next_st;
5180
5181                 st_ddb_idx = vzalloc(fw_idx_size);
5182                 if (!st_ddb_idx)
5183                         break;
5184
5185                 st_ddb_idx->fw_ddb_idx = idx;
5186
5187                 list_add_tail(&st_ddb_idx->list, list_st);
5188 continue_next_st:
5189                 if (next_idx == 0)
5190                         break;
5191         }
5192
5193 exit_st_list:
5194         if (fw_ddb_entry)
5195                 dma_pool_free(ha->fw_ddb_dma_pool, fw_ddb_entry, fw_ddb_dma);
5196 }
5197
5198 /**
5199  * qla4xxx_remove_failed_ddb - Remove inactive or failed ddb from list
5200  * @ha: pointer to adapter structure
5201  * @list_ddb: List from which failed ddb to be removed
5202  *
5203  * Iterate over the list of DDBs and find and remove DDBs that are either in
5204  * no connection active state or failed state
5205  **/
5206 static void qla4xxx_remove_failed_ddb(struct scsi_qla_host *ha,
5207                                       struct list_head *list_ddb)
5208 {
5209         struct qla_ddb_index  *ddb_idx, *ddb_idx_tmp;
5210         uint32_t next_idx = 0;
5211         uint32_t state = 0, conn_err = 0;
5212         int ret;
5213
5214         list_for_each_entry_safe(ddb_idx, ddb_idx_tmp, list_ddb, list) {
5215                 ret = qla4xxx_get_fwddb_entry(ha, ddb_idx->fw_ddb_idx,
5216                                               NULL, 0, NULL, &next_idx, &state,
5217                                               &conn_err, NULL, NULL);
5218                 if (ret == QLA_ERROR)
5219                         continue;
5220
5221                 if (state == DDB_DS_NO_CONNECTION_ACTIVE ||
5222                     state == DDB_DS_SESSION_FAILED) {
5223                         list_del_init(&ddb_idx->list);
5224                         vfree(ddb_idx);
5225                 }
5226         }
5227 }
5228
5229 static int qla4xxx_sess_conn_setup(struct scsi_qla_host *ha,
5230                                    struct dev_db_entry *fw_ddb_entry,
5231                                    int is_reset, uint16_t idx)
5232 {
5233         struct iscsi_cls_session *cls_sess;
5234         struct iscsi_session *sess;
5235         struct iscsi_cls_conn *cls_conn;
5236         struct iscsi_endpoint *ep;
5237         uint16_t cmds_max = 32;
5238         uint16_t conn_id = 0;
5239         uint32_t initial_cmdsn = 0;
5240         int ret = QLA_SUCCESS;
5241
5242         struct ddb_entry *ddb_entry = NULL;
5243
5244         /* Create session object, with INVALID_ENTRY,
5245          * the targer_id would get set when we issue the login
5246          */
5247         cls_sess = iscsi_session_setup(&qla4xxx_iscsi_transport, ha->host,
5248                                        cmds_max, sizeof(struct ddb_entry),
5249                                        sizeof(struct ql4_task_data),
5250                                        initial_cmdsn, INVALID_ENTRY);
5251         if (!cls_sess) {
5252                 ret = QLA_ERROR;
5253                 goto exit_setup;
5254         }
5255
5256         /*
5257          * so calling module_put function to decrement the
5258          * reference count.
5259          **/
5260         module_put(qla4xxx_iscsi_transport.owner);
5261         sess = cls_sess->dd_data;
5262         ddb_entry = sess->dd_data;
5263         ddb_entry->sess = cls_sess;
5264
5265         cls_sess->recovery_tmo = ql4xsess_recovery_tmo;
5266         memcpy(&ddb_entry->fw_ddb_entry, fw_ddb_entry,
5267                sizeof(struct dev_db_entry));
5268
5269         qla4xxx_setup_flash_ddb_entry(ha, ddb_entry, idx);
5270
5271         cls_conn = iscsi_conn_setup(cls_sess, sizeof(struct qla_conn), conn_id);
5272
5273         if (!cls_conn) {
5274                 ret = QLA_ERROR;
5275                 goto exit_setup;
5276         }
5277
5278         ddb_entry->conn = cls_conn;
5279
5280         /* Setup ep, for displaying attributes in sysfs */
5281         ep = qla4xxx_get_ep_fwdb(ha, fw_ddb_entry);
5282         if (ep) {
5283                 ep->conn = cls_conn;
5284                 cls_conn->ep = ep;
5285         } else {
5286                 DEBUG2(ql4_printk(KERN_ERR, ha, "Unable to get ep\n"));
5287                 ret = QLA_ERROR;
5288                 goto exit_setup;
5289         }
5290
5291         /* Update sess/conn params */
5292         qla4xxx_copy_fwddb_param(ha, fw_ddb_entry, cls_sess, cls_conn);
5293
5294         if (is_reset == RESET_ADAPTER) {
5295                 iscsi_block_session(cls_sess);
5296                 /* Use the relogin path to discover new devices
5297                  *  by short-circuting the logic of setting
5298                  *  timer to relogin - instead set the flags
5299                  *  to initiate login right away.
5300                  */
5301                 set_bit(DPC_RELOGIN_DEVICE, &ha->dpc_flags);
5302                 set_bit(DF_RELOGIN, &ddb_entry->flags);
5303         }
5304
5305 exit_setup:
5306         return ret;
5307 }
5308
5309 static void qla4xxx_build_nt_list(struct scsi_qla_host *ha,
5310                                   struct list_head *list_nt, int is_reset)
5311 {
5312         struct dev_db_entry *fw_ddb_entry;
5313         dma_addr_t fw_ddb_dma;
5314         int max_ddbs;
5315         int fw_idx_size;
5316         int ret;
5317         uint32_t idx = 0, next_idx = 0;
5318         uint32_t state = 0, conn_err = 0;
5319         uint16_t conn_id = 0;
5320         struct qla_ddb_index  *nt_ddb_idx;
5321
5322         fw_ddb_entry = dma_pool_alloc(ha->fw_ddb_dma_pool, GFP_KERNEL,
5323                                       &fw_ddb_dma);
5324         if (fw_ddb_entry == NULL) {
5325                 DEBUG2(ql4_printk(KERN_ERR, ha, "Out of memory\n"));
5326                 goto exit_nt_list;
5327         }
5328         max_ddbs =  is_qla40XX(ha) ? MAX_DEV_DB_ENTRIES_40XX :
5329                                      MAX_DEV_DB_ENTRIES;
5330         fw_idx_size = sizeof(struct qla_ddb_index);
5331
5332         for (idx = 0; idx < max_ddbs; idx = next_idx) {
5333                 ret = qla4xxx_get_fwddb_entry(ha, idx, fw_ddb_entry, fw_ddb_dma,
5334                                               NULL, &next_idx, &state,
5335                                               &conn_err, NULL, &conn_id);
5336                 if (ret == QLA_ERROR)
5337                         break;
5338
5339                 if (qla4xxx_verify_boot_idx(ha, idx) != QLA_SUCCESS)
5340                         goto continue_next_nt;
5341
5342                 /* Check if NT, then add to list it */
5343                 if (strlen((char *) fw_ddb_entry->iscsi_name) == 0)
5344                         goto continue_next_nt;
5345
5346                 if (!(state == DDB_DS_NO_CONNECTION_ACTIVE ||
5347                     state == DDB_DS_SESSION_FAILED))
5348                         goto continue_next_nt;
5349
5350                 DEBUG2(ql4_printk(KERN_INFO, ha,
5351                                   "Adding  DDB to session = 0x%x\n", idx));
5352                 if (is_reset == INIT_ADAPTER) {
5353                         nt_ddb_idx = vmalloc(fw_idx_size);
5354                         if (!nt_ddb_idx)
5355                                 break;
5356
5357                         nt_ddb_idx->fw_ddb_idx = idx;
5358
5359                         /* Copy original isid as it may get updated in function
5360                          * qla4xxx_update_isid(). We need original isid in
5361                          * function qla4xxx_compare_tuple_ddb to find duplicate
5362                          * target */
5363                         memcpy(&nt_ddb_idx->flash_isid[0],
5364                                &fw_ddb_entry->isid[0],
5365                                sizeof(nt_ddb_idx->flash_isid));
5366
5367                         ret = qla4xxx_is_flash_ddb_exists(ha, list_nt,
5368                                                           fw_ddb_entry);
5369                         if (ret == QLA_SUCCESS) {
5370                                 /* free nt_ddb_idx and do not add to list_nt */
5371                                 vfree(nt_ddb_idx);
5372                                 goto continue_next_nt;
5373                         }
5374
5375                         /* Copy updated isid */
5376                         memcpy(&nt_ddb_idx->fw_ddb, fw_ddb_entry,
5377                                sizeof(struct dev_db_entry));
5378
5379                         list_add_tail(&nt_ddb_idx->list, list_nt);
5380                 } else if (is_reset == RESET_ADAPTER) {
5381                         if (qla4xxx_is_session_exists(ha, fw_ddb_entry) ==
5382                                                                 QLA_SUCCESS)
5383                                 goto continue_next_nt;
5384                 }
5385
5386                 ret = qla4xxx_sess_conn_setup(ha, fw_ddb_entry, is_reset, idx);
5387                 if (ret == QLA_ERROR)
5388                         goto exit_nt_list;
5389
5390 continue_next_nt:
5391                 if (next_idx == 0)
5392                         break;
5393         }
5394
5395 exit_nt_list:
5396         if (fw_ddb_entry)
5397                 dma_pool_free(ha->fw_ddb_dma_pool, fw_ddb_entry, fw_ddb_dma);
5398 }
5399
5400 static void qla4xxx_build_new_nt_list(struct scsi_qla_host *ha,
5401                                       struct list_head *list_nt)
5402 {
5403         struct dev_db_entry *fw_ddb_entry;
5404         dma_addr_t fw_ddb_dma;
5405         int max_ddbs;
5406         int fw_idx_size;
5407         int ret;
5408         uint32_t idx = 0, next_idx = 0;
5409         uint32_t state = 0, conn_err = 0;
5410         uint16_t conn_id = 0;
5411         struct qla_ddb_index  *nt_ddb_idx;
5412
5413         fw_ddb_entry = dma_pool_alloc(ha->fw_ddb_dma_pool, GFP_KERNEL,
5414                                       &fw_ddb_dma);
5415         if (fw_ddb_entry == NULL) {
5416                 DEBUG2(ql4_printk(KERN_ERR, ha, "Out of memory\n"));
5417                 goto exit_new_nt_list;
5418         }
5419         max_ddbs =  is_qla40XX(ha) ? MAX_DEV_DB_ENTRIES_40XX :
5420                                      MAX_DEV_DB_ENTRIES;
5421         fw_idx_size = sizeof(struct qla_ddb_index);
5422
5423         for (idx = 0; idx < max_ddbs; idx = next_idx) {
5424                 ret = qla4xxx_get_fwddb_entry(ha, idx, fw_ddb_entry, fw_ddb_dma,
5425                                               NULL, &next_idx, &state,
5426                                               &conn_err, NULL, &conn_id);
5427                 if (ret == QLA_ERROR)
5428                         break;
5429
5430                 /* Check if NT, then add it to list */
5431                 if (strlen((char *)fw_ddb_entry->iscsi_name) == 0)
5432                         goto continue_next_new_nt;
5433
5434                 if (!(state == DDB_DS_NO_CONNECTION_ACTIVE))
5435                         goto continue_next_new_nt;
5436
5437                 DEBUG2(ql4_printk(KERN_INFO, ha,
5438                                   "Adding  DDB to session = 0x%x\n", idx));
5439
5440                 nt_ddb_idx = vmalloc(fw_idx_size);
5441                 if (!nt_ddb_idx)
5442                         break;
5443
5444                 nt_ddb_idx->fw_ddb_idx = idx;
5445
5446                 ret = qla4xxx_is_session_exists(ha, fw_ddb_entry);
5447                 if (ret == QLA_SUCCESS) {
5448                         /* free nt_ddb_idx and do not add to list_nt */
5449                         vfree(nt_ddb_idx);
5450                         goto continue_next_new_nt;
5451                 }
5452
5453                 list_add_tail(&nt_ddb_idx->list, list_nt);
5454
5455                 ret = qla4xxx_sess_conn_setup(ha, fw_ddb_entry, RESET_ADAPTER,
5456                                               idx);
5457                 if (ret == QLA_ERROR)
5458                         goto exit_new_nt_list;
5459
5460 continue_next_new_nt:
5461                 if (next_idx == 0)
5462                         break;
5463         }
5464
5465 exit_new_nt_list:
5466         if (fw_ddb_entry)
5467                 dma_pool_free(ha->fw_ddb_dma_pool, fw_ddb_entry, fw_ddb_dma);
5468 }
5469
5470 /**
5471  * qla4xxx_sysfs_ddb_is_non_persistent - check for non-persistence of ddb entry
5472  * @dev: dev associated with the sysfs entry
5473  * @data: pointer to flashnode session object
5474  *
5475  * Returns:
5476  *      1: if flashnode entry is non-persistent
5477  *      0: if flashnode entry is persistent
5478  **/
5479 static int qla4xxx_sysfs_ddb_is_non_persistent(struct device *dev, void *data)
5480 {
5481         struct iscsi_bus_flash_session *fnode_sess;
5482
5483         if (!iscsi_flashnode_bus_match(dev, NULL))
5484                 return 0;
5485
5486         fnode_sess = iscsi_dev_to_flash_session(dev);
5487
5488         return (fnode_sess->flash_state == DEV_DB_NON_PERSISTENT);
5489 }
5490
5491 /**
5492  * qla4xxx_sysfs_ddb_tgt_create - Create sysfs entry for target
5493  * @ha: pointer to host
5494  * @fw_ddb_entry: flash ddb data
5495  * @idx: target index
5496  * @user: if set then this call is made from userland else from kernel
5497  *
5498  * Returns:
5499  * On sucess: QLA_SUCCESS
5500  * On failure: QLA_ERROR
5501  *
5502  * This create separate sysfs entries for session and connection attributes of
5503  * the given fw ddb entry.
5504  * If this is invoked as a result of a userspace call then the entry is marked
5505  * as nonpersistent using flash_state field.
5506  **/
5507 static int qla4xxx_sysfs_ddb_tgt_create(struct scsi_qla_host *ha,
5508                                         struct dev_db_entry *fw_ddb_entry,
5509                                         uint16_t *idx, int user)
5510 {
5511         struct iscsi_bus_flash_session *fnode_sess = NULL;
5512         struct iscsi_bus_flash_conn *fnode_conn = NULL;
5513         int rc = QLA_ERROR;
5514
5515         fnode_sess = iscsi_create_flashnode_sess(ha->host, *idx,
5516                                                  &qla4xxx_iscsi_transport, 0);
5517         if (!fnode_sess) {
5518                 ql4_printk(KERN_ERR, ha,
5519                            "%s: Unable to create session sysfs entry for flashnode %d of host%lu\n",
5520                            __func__, *idx, ha->host_no);
5521                 goto exit_tgt_create;
5522         }
5523
5524         fnode_conn = iscsi_create_flashnode_conn(ha->host, fnode_sess,
5525                                                  &qla4xxx_iscsi_transport, 0);
5526         if (!fnode_conn) {
5527                 ql4_printk(KERN_ERR, ha,
5528                            "%s: Unable to create conn sysfs entry for flashnode %d of host%lu\n",
5529                            __func__, *idx, ha->host_no);
5530                 goto free_sess;
5531         }
5532
5533         if (user) {
5534                 fnode_sess->flash_state = DEV_DB_NON_PERSISTENT;
5535         } else {
5536                 fnode_sess->flash_state = DEV_DB_PERSISTENT;
5537
5538                 if (*idx == ha->pri_ddb_idx || *idx == ha->sec_ddb_idx)
5539                         fnode_sess->is_boot_target = 1;
5540                 else
5541                         fnode_sess->is_boot_target = 0;
5542         }
5543
5544         rc = qla4xxx_copy_from_fwddb_param(fnode_sess, fnode_conn,
5545                                            fw_ddb_entry);
5546
5547         ql4_printk(KERN_INFO, ha, "%s: sysfs entry %s created\n",
5548                    __func__, fnode_sess->dev.kobj.name);
5549
5550         ql4_printk(KERN_INFO, ha, "%s: sysfs entry %s created\n",
5551                    __func__, fnode_conn->dev.kobj.name);
5552
5553         return QLA_SUCCESS;
5554
5555 free_sess:
5556         iscsi_destroy_flashnode_sess(fnode_sess);
5557
5558 exit_tgt_create:
5559         return QLA_ERROR;
5560 }
5561
5562 /**
5563  * qla4xxx_sysfs_ddb_add - Add new ddb entry in flash
5564  * @shost: pointer to host
5565  * @buf: type of ddb entry (ipv4/ipv6)
5566  * @len: length of buf
5567  *
5568  * This creates new ddb entry in the flash by finding first free index and
5569  * storing default ddb there. And then create sysfs entry for the new ddb entry.
5570  **/
5571 static int qla4xxx_sysfs_ddb_add(struct Scsi_Host *shost, const char *buf,
5572                                  int len)
5573 {
5574         struct scsi_qla_host *ha = to_qla_host(shost);
5575         struct dev_db_entry *fw_ddb_entry = NULL;
5576         dma_addr_t fw_ddb_entry_dma;
5577         struct device *dev;
5578         uint16_t idx = 0;
5579         uint16_t max_ddbs = 0;
5580         uint32_t options = 0;
5581         uint32_t rval = QLA_ERROR;
5582
5583         if (strncasecmp(PORTAL_TYPE_IPV4, buf, 4) &&
5584             strncasecmp(PORTAL_TYPE_IPV6, buf, 4)) {
5585                 DEBUG2(ql4_printk(KERN_ERR, ha, "%s: Invalid portal type\n",
5586                                   __func__));
5587                 goto exit_ddb_add;
5588         }
5589
5590         max_ddbs =  is_qla40XX(ha) ? MAX_PRST_DEV_DB_ENTRIES :
5591                                      MAX_DEV_DB_ENTRIES;
5592
5593         fw_ddb_entry = dma_alloc_coherent(&ha->pdev->dev, sizeof(*fw_ddb_entry),
5594                                           &fw_ddb_entry_dma, GFP_KERNEL);
5595         if (!fw_ddb_entry) {
5596                 DEBUG2(ql4_printk(KERN_ERR, ha,
5597                                   "%s: Unable to allocate dma buffer\n",
5598                                   __func__));
5599                 goto exit_ddb_add;
5600         }
5601
5602         dev = iscsi_find_flashnode_sess(ha->host, NULL,
5603                                         qla4xxx_sysfs_ddb_is_non_persistent);
5604         if (dev) {
5605                 ql4_printk(KERN_ERR, ha,
5606                            "%s: A non-persistent entry %s found\n",
5607                            __func__, dev->kobj.name);
5608                 put_device(dev);
5609                 goto exit_ddb_add;
5610         }
5611
5612         for (idx = 0; idx < max_ddbs; idx++) {
5613                 if (qla4xxx_flashdb_by_index(ha, fw_ddb_entry,
5614                                              fw_ddb_entry_dma, idx))
5615                         break;
5616         }
5617
5618         if (idx == max_ddbs)
5619                 goto exit_ddb_add;
5620
5621         if (!strncasecmp("ipv6", buf, 4))
5622                 options |= IPV6_DEFAULT_DDB_ENTRY;
5623
5624         rval = qla4xxx_get_default_ddb(ha, options, fw_ddb_entry_dma);
5625         if (rval == QLA_ERROR)
5626                 goto exit_ddb_add;
5627
5628         rval = qla4xxx_sysfs_ddb_tgt_create(ha, fw_ddb_entry, &idx, 1);
5629
5630 exit_ddb_add:
5631         if (fw_ddb_entry)
5632                 dma_free_coherent(&ha->pdev->dev, sizeof(*fw_ddb_entry),
5633                                   fw_ddb_entry, fw_ddb_entry_dma);
5634         if (rval == QLA_SUCCESS)
5635                 return idx;
5636         else
5637                 return -EIO;
5638 }
5639
5640 /**
5641  * qla4xxx_sysfs_ddb_apply - write the target ddb contents to Flash
5642  * @fnode_sess: pointer to session attrs of flash ddb entry
5643  * @fnode_conn: pointer to connection attrs of flash ddb entry
5644  *
5645  * This writes the contents of target ddb buffer to Flash with a valid cookie
5646  * value in order to make the ddb entry persistent.
5647  **/
5648 static int  qla4xxx_sysfs_ddb_apply(struct iscsi_bus_flash_session *fnode_sess,
5649                                     struct iscsi_bus_flash_conn *fnode_conn)
5650 {
5651         struct Scsi_Host *shost = iscsi_flash_session_to_shost(fnode_sess);
5652         struct scsi_qla_host *ha = to_qla_host(shost);
5653         uint32_t dev_db_start_offset = FLASH_OFFSET_DB_INFO;
5654         struct dev_db_entry *fw_ddb_entry = NULL;
5655         dma_addr_t fw_ddb_entry_dma;
5656         uint32_t options = 0;
5657         int rval = 0;
5658
5659         fw_ddb_entry = dma_alloc_coherent(&ha->pdev->dev, sizeof(*fw_ddb_entry),
5660                                           &fw_ddb_entry_dma, GFP_KERNEL);
5661         if (!fw_ddb_entry) {
5662                 DEBUG2(ql4_printk(KERN_ERR, ha,
5663                                   "%s: Unable to allocate dma buffer\n",
5664                                   __func__));
5665                 rval = -ENOMEM;
5666                 goto exit_ddb_apply;
5667         }
5668
5669         if (!strncasecmp(fnode_sess->portal_type, PORTAL_TYPE_IPV6, 4))
5670                 options |= IPV6_DEFAULT_DDB_ENTRY;
5671
5672         rval = qla4xxx_get_default_ddb(ha, options, fw_ddb_entry_dma);
5673         if (rval == QLA_ERROR)
5674                 goto exit_ddb_apply;
5675
5676         dev_db_start_offset += (fnode_sess->target_id *
5677                                 sizeof(*fw_ddb_entry));
5678
5679         qla4xxx_copy_to_fwddb_param(fnode_sess, fnode_conn, fw_ddb_entry);
5680         fw_ddb_entry->cookie = DDB_VALID_COOKIE;
5681
5682         rval = qla4xxx_set_flash(ha, fw_ddb_entry_dma, dev_db_start_offset,
5683                                  sizeof(*fw_ddb_entry), FLASH_OPT_RMW_COMMIT);
5684
5685         if (rval == QLA_SUCCESS) {
5686                 fnode_sess->flash_state = DEV_DB_PERSISTENT;
5687                 ql4_printk(KERN_INFO, ha,
5688                            "%s: flash node %u of host %lu written to flash\n",
5689                            __func__, fnode_sess->target_id, ha->host_no);
5690         } else {
5691                 rval = -EIO;
5692                 ql4_printk(KERN_ERR, ha,
5693                            "%s: Error while writing flash node %u of host %lu to flash\n",
5694                            __func__, fnode_sess->target_id, ha->host_no);
5695         }
5696
5697 exit_ddb_apply:
5698         if (fw_ddb_entry)
5699                 dma_free_coherent(&ha->pdev->dev, sizeof(*fw_ddb_entry),
5700                                   fw_ddb_entry, fw_ddb_entry_dma);
5701         return rval;
5702 }
5703
5704 static ssize_t qla4xxx_sysfs_ddb_conn_open(struct scsi_qla_host *ha,
5705                                            struct dev_db_entry *fw_ddb_entry,
5706                                            uint16_t idx)
5707 {
5708         struct dev_db_entry *ddb_entry = NULL;
5709         dma_addr_t ddb_entry_dma;
5710         unsigned long wtime;
5711         uint32_t mbx_sts = 0;
5712         uint32_t state = 0, conn_err = 0;
5713         uint16_t tmo = 0;
5714         int ret = 0;
5715
5716         ddb_entry = dma_alloc_coherent(&ha->pdev->dev, sizeof(*ddb_entry),
5717                                        &ddb_entry_dma, GFP_KERNEL);
5718         if (!ddb_entry) {
5719                 DEBUG2(ql4_printk(KERN_ERR, ha,
5720                                   "%s: Unable to allocate dma buffer\n",
5721                                   __func__));
5722                 return QLA_ERROR;
5723         }
5724
5725         memcpy(ddb_entry, fw_ddb_entry, sizeof(*ddb_entry));
5726
5727         ret = qla4xxx_set_ddb_entry(ha, idx, ddb_entry_dma, &mbx_sts);
5728         if (ret != QLA_SUCCESS) {
5729                 DEBUG2(ql4_printk(KERN_ERR, ha,
5730                                   "%s: Unable to set ddb entry for index %d\n",
5731                                   __func__, idx));
5732                 goto exit_ddb_conn_open;
5733         }
5734
5735         qla4xxx_conn_open(ha, idx);
5736
5737         /* To ensure that sendtargets is done, wait for at least 12 secs */
5738         tmo = ((ha->def_timeout > LOGIN_TOV) &&
5739                (ha->def_timeout < LOGIN_TOV * 10) ?
5740                ha->def_timeout : LOGIN_TOV);
5741
5742         DEBUG2(ql4_printk(KERN_INFO, ha,
5743                           "Default time to wait for login to ddb %d\n", tmo));
5744
5745         wtime = jiffies + (HZ * tmo);
5746         do {
5747                 ret = qla4xxx_get_fwddb_entry(ha, idx, NULL, 0, NULL,
5748                                               NULL, &state, &conn_err, NULL,
5749                                               NULL);
5750                 if (ret == QLA_ERROR)
5751                         continue;
5752
5753                 if (state == DDB_DS_NO_CONNECTION_ACTIVE ||
5754                     state == DDB_DS_SESSION_FAILED)
5755                         break;
5756
5757                 schedule_timeout_uninterruptible(HZ / 10);
5758         } while (time_after(wtime, jiffies));
5759
5760 exit_ddb_conn_open:
5761         if (ddb_entry)
5762                 dma_free_coherent(&ha->pdev->dev, sizeof(*ddb_entry),
5763                                   ddb_entry, ddb_entry_dma);
5764         return ret;
5765 }
5766
5767 static int qla4xxx_ddb_login_st(struct scsi_qla_host *ha,
5768                                 struct dev_db_entry *fw_ddb_entry)
5769 {
5770         struct qla_ddb_index *ddb_idx, *ddb_idx_tmp;
5771         struct list_head list_nt;
5772         uint16_t ddb_index;
5773         int ret = 0;
5774
5775         if (test_bit(AF_ST_DISCOVERY_IN_PROGRESS, &ha->flags)) {
5776                 ql4_printk(KERN_WARNING, ha,
5777                            "%s: A discovery already in progress!\n", __func__);
5778                 return QLA_ERROR;
5779         }
5780
5781         INIT_LIST_HEAD(&list_nt);
5782
5783         set_bit(AF_ST_DISCOVERY_IN_PROGRESS, &ha->flags);
5784
5785         ret = qla4xxx_get_ddb_index(ha, &ddb_index);
5786         if (ret == QLA_ERROR)
5787                 goto exit_login_st_clr_bit;
5788
5789         ret = qla4xxx_sysfs_ddb_conn_open(ha, fw_ddb_entry, ddb_index);
5790         if (ret == QLA_ERROR)
5791                 goto exit_login_st;
5792
5793         qla4xxx_build_new_nt_list(ha, &list_nt);
5794
5795         list_for_each_entry_safe(ddb_idx, ddb_idx_tmp, &list_nt, list) {
5796                 list_del_init(&ddb_idx->list);
5797                 qla4xxx_clear_ddb_entry(ha, ddb_idx->fw_ddb_idx);
5798                 vfree(ddb_idx);
5799         }
5800
5801 exit_login_st:
5802         if (qla4xxx_clear_ddb_entry(ha, ddb_index) == QLA_ERROR) {
5803                 ql4_printk(KERN_ERR, ha,
5804                            "Unable to clear DDB index = 0x%x\n", ddb_index);
5805         }
5806
5807         clear_bit(ddb_index, ha->ddb_idx_map);
5808
5809 exit_login_st_clr_bit:
5810         clear_bit(AF_ST_DISCOVERY_IN_PROGRESS, &ha->flags);
5811         return ret;
5812 }
5813
5814 static int qla4xxx_ddb_login_nt(struct scsi_qla_host *ha,
5815                                 struct dev_db_entry *fw_ddb_entry,
5816                                 uint16_t idx)
5817 {
5818         int ret = QLA_ERROR;
5819
5820         ret = qla4xxx_is_session_exists(ha, fw_ddb_entry);
5821         if (ret != QLA_SUCCESS)
5822                 ret = qla4xxx_sess_conn_setup(ha, fw_ddb_entry, RESET_ADAPTER,
5823                                               idx);
5824         else
5825                 ret = -EPERM;
5826
5827         return ret;
5828 }
5829
5830 /**
5831  * qla4xxx_sysfs_ddb_login - Login to the specified target
5832  * @fnode_sess: pointer to session attrs of flash ddb entry
5833  * @fnode_conn: pointer to connection attrs of flash ddb entry
5834  *
5835  * This logs in to the specified target
5836  **/
5837 static int qla4xxx_sysfs_ddb_login(struct iscsi_bus_flash_session *fnode_sess,
5838                                    struct iscsi_bus_flash_conn *fnode_conn)
5839 {
5840         struct Scsi_Host *shost = iscsi_flash_session_to_shost(fnode_sess);
5841         struct scsi_qla_host *ha = to_qla_host(shost);
5842         struct dev_db_entry *fw_ddb_entry = NULL;
5843         dma_addr_t fw_ddb_entry_dma;
5844         uint32_t options = 0;
5845         int ret = 0;
5846
5847         if (fnode_sess->flash_state == DEV_DB_NON_PERSISTENT) {
5848                 ql4_printk(KERN_ERR, ha,
5849                            "%s: Target info is not persistent\n", __func__);
5850                 ret = -EIO;
5851                 goto exit_ddb_login;
5852         }
5853
5854         fw_ddb_entry = dma_alloc_coherent(&ha->pdev->dev, sizeof(*fw_ddb_entry),
5855                                           &fw_ddb_entry_dma, GFP_KERNEL);
5856         if (!fw_ddb_entry) {
5857                 DEBUG2(ql4_printk(KERN_ERR, ha,
5858                                   "%s: Unable to allocate dma buffer\n",
5859                                   __func__));
5860                 ret = -ENOMEM;
5861                 goto exit_ddb_login;
5862         }
5863
5864         if (!strncasecmp(fnode_sess->portal_type, PORTAL_TYPE_IPV6, 4))
5865                 options |= IPV6_DEFAULT_DDB_ENTRY;
5866
5867         ret = qla4xxx_get_default_ddb(ha, options, fw_ddb_entry_dma);
5868         if (ret == QLA_ERROR)
5869                 goto exit_ddb_login;
5870
5871         qla4xxx_copy_to_fwddb_param(fnode_sess, fnode_conn, fw_ddb_entry);
5872         fw_ddb_entry->cookie = DDB_VALID_COOKIE;
5873
5874         if (strlen((char *)fw_ddb_entry->iscsi_name) == 0)
5875                 ret = qla4xxx_ddb_login_st(ha, fw_ddb_entry);
5876         else
5877                 ret = qla4xxx_ddb_login_nt(ha, fw_ddb_entry,
5878                                            fnode_sess->target_id);
5879
5880         if (ret > 0)
5881                 ret = -EIO;
5882
5883 exit_ddb_login:
5884         if (fw_ddb_entry)
5885                 dma_free_coherent(&ha->pdev->dev, sizeof(*fw_ddb_entry),
5886                                   fw_ddb_entry, fw_ddb_entry_dma);
5887         return ret;
5888 }
5889
5890 /**
5891  * qla4xxx_sysfs_ddb_logout_sid - Logout session for the specified target
5892  * @cls_sess: pointer to session to be logged out
5893  *
5894  * This performs session log out from the specified target
5895  **/
5896 static int qla4xxx_sysfs_ddb_logout_sid(struct iscsi_cls_session *cls_sess)
5897 {
5898         struct iscsi_session *sess;
5899         struct ddb_entry *ddb_entry = NULL;
5900         struct scsi_qla_host *ha;
5901         struct dev_db_entry *fw_ddb_entry = NULL;
5902         dma_addr_t fw_ddb_entry_dma;
5903         unsigned long flags;
5904         unsigned long wtime;
5905         uint32_t ddb_state;
5906         int options;
5907         int ret = 0;
5908
5909         sess = cls_sess->dd_data;
5910         ddb_entry = sess->dd_data;
5911         ha = ddb_entry->ha;
5912
5913         if (ddb_entry->ddb_type != FLASH_DDB) {
5914                 ql4_printk(KERN_ERR, ha, "%s: Not a flash node session\n",
5915                            __func__);
5916                 ret = -ENXIO;
5917                 goto exit_ddb_logout;
5918         }
5919
5920         if (test_bit(DF_BOOT_TGT, &ddb_entry->flags)) {
5921                 ql4_printk(KERN_ERR, ha,
5922                            "%s: Logout from boot target entry is not permitted.\n",
5923                            __func__);
5924                 ret = -EPERM;
5925                 goto exit_ddb_logout;
5926         }
5927
5928         options = LOGOUT_OPTION_CLOSE_SESSION;
5929         if (qla4xxx_session_logout_ddb(ha, ddb_entry, options) == QLA_ERROR) {
5930                 ql4_printk(KERN_ERR, ha, "%s: Logout failed\n", __func__);
5931                 ret = -EIO;
5932                 goto exit_ddb_logout;
5933         }
5934
5935         fw_ddb_entry = dma_alloc_coherent(&ha->pdev->dev, sizeof(*fw_ddb_entry),
5936                                           &fw_ddb_entry_dma, GFP_KERNEL);
5937         if (!fw_ddb_entry) {
5938                 ql4_printk(KERN_ERR, ha,
5939                            "%s: Unable to allocate dma buffer\n", __func__);
5940                 ret = -ENOMEM;
5941                 goto exit_ddb_logout;
5942         }
5943
5944         wtime = jiffies + (HZ * LOGOUT_TOV);
5945         do {
5946                 ret = qla4xxx_get_fwddb_entry(ha, ddb_entry->fw_ddb_index,
5947                                               fw_ddb_entry, fw_ddb_entry_dma,
5948                                               NULL, NULL, &ddb_state, NULL,
5949                                               NULL, NULL);
5950                 if (ret == QLA_ERROR)
5951                         goto ddb_logout_clr_sess;
5952
5953                 if ((ddb_state == DDB_DS_NO_CONNECTION_ACTIVE) ||
5954                     (ddb_state == DDB_DS_SESSION_FAILED))
5955                         goto ddb_logout_clr_sess;
5956
5957                 schedule_timeout_uninterruptible(HZ);
5958         } while ((time_after(wtime, jiffies)));
5959
5960 ddb_logout_clr_sess:
5961         qla4xxx_clear_ddb_entry(ha, ddb_entry->fw_ddb_index);
5962         /*
5963          * we have decremented the reference count of the driver
5964          * when we setup the session to have the driver unload
5965          * to be seamless without actually destroying the
5966          * session
5967          **/
5968         try_module_get(qla4xxx_iscsi_transport.owner);
5969         iscsi_destroy_endpoint(ddb_entry->conn->ep);
5970
5971         spin_lock_irqsave(&ha->hardware_lock, flags);
5972         qla4xxx_free_ddb(ha, ddb_entry);
5973         spin_unlock_irqrestore(&ha->hardware_lock, flags);
5974
5975         iscsi_session_teardown(ddb_entry->sess);
5976
5977         ret = QLA_SUCCESS;
5978
5979 exit_ddb_logout:
5980         if (fw_ddb_entry)
5981                 dma_free_coherent(&ha->pdev->dev, sizeof(*fw_ddb_entry),
5982                                   fw_ddb_entry, fw_ddb_entry_dma);
5983         return ret;
5984 }
5985
5986 /**
5987  * qla4xxx_sysfs_ddb_logout - Logout from the specified target
5988  * @fnode_sess: pointer to session attrs of flash ddb entry
5989  * @fnode_conn: pointer to connection attrs of flash ddb entry
5990  *
5991  * This performs log out from the specified target
5992  **/
5993 static int qla4xxx_sysfs_ddb_logout(struct iscsi_bus_flash_session *fnode_sess,
5994                                     struct iscsi_bus_flash_conn *fnode_conn)
5995 {
5996         struct Scsi_Host *shost = iscsi_flash_session_to_shost(fnode_sess);
5997         struct scsi_qla_host *ha = to_qla_host(shost);
5998         struct ql4_tuple_ddb *flash_tddb = NULL;
5999         struct ql4_tuple_ddb *tmp_tddb = NULL;
6000         struct dev_db_entry *fw_ddb_entry = NULL;
6001         struct ddb_entry *ddb_entry = NULL;
6002         dma_addr_t fw_ddb_dma;
6003         uint32_t next_idx = 0;
6004         uint32_t state = 0, conn_err = 0;
6005         uint16_t conn_id = 0;
6006         int idx, index;
6007         int status, ret = 0;
6008
6009         fw_ddb_entry = dma_pool_alloc(ha->fw_ddb_dma_pool, GFP_KERNEL,
6010                                       &fw_ddb_dma);
6011         if (fw_ddb_entry == NULL) {
6012                 ql4_printk(KERN_ERR, ha, "%s:Out of memory\n", __func__);
6013                 ret = -ENOMEM;
6014                 goto exit_ddb_logout;
6015         }
6016
6017         flash_tddb = vzalloc(sizeof(*flash_tddb));
6018         if (!flash_tddb) {
6019                 ql4_printk(KERN_WARNING, ha,
6020                            "%s:Memory Allocation failed.\n", __func__);
6021                 ret = -ENOMEM;
6022                 goto exit_ddb_logout;
6023         }
6024
6025         tmp_tddb = vzalloc(sizeof(*tmp_tddb));
6026         if (!tmp_tddb) {
6027                 ql4_printk(KERN_WARNING, ha,
6028                            "%s:Memory Allocation failed.\n", __func__);
6029                 ret = -ENOMEM;
6030                 goto exit_ddb_logout;
6031         }
6032
6033         if (!fnode_sess->targetname) {
6034                 ql4_printk(KERN_ERR, ha,
6035                            "%s:Cannot logout from SendTarget entry\n",
6036                            __func__);
6037                 ret = -EPERM;
6038                 goto exit_ddb_logout;
6039         }
6040
6041         if (fnode_sess->is_boot_target) {
6042                 ql4_printk(KERN_ERR, ha,
6043                            "%s: Logout from boot target entry is not permitted.\n",
6044                            __func__);
6045                 ret = -EPERM;
6046                 goto exit_ddb_logout;
6047         }
6048
6049         strncpy(flash_tddb->iscsi_name, fnode_sess->targetname,
6050                 ISCSI_NAME_SIZE);
6051
6052         if (!strncmp(fnode_sess->portal_type, PORTAL_TYPE_IPV6, 4))
6053                 sprintf(flash_tddb->ip_addr, "%pI6", fnode_conn->ipaddress);
6054         else
6055                 sprintf(flash_tddb->ip_addr, "%pI4", fnode_conn->ipaddress);
6056
6057         flash_tddb->tpgt = fnode_sess->tpgt;
6058         flash_tddb->port = fnode_conn->port;
6059
6060         COPY_ISID(flash_tddb->isid, fnode_sess->isid);
6061
6062         for (idx = 0; idx < MAX_DDB_ENTRIES; idx++) {
6063                 ddb_entry = qla4xxx_lookup_ddb_by_fw_index(ha, idx);
6064                 if (ddb_entry == NULL)
6065                         continue;
6066
6067                 if (ddb_entry->ddb_type != FLASH_DDB)
6068                         continue;
6069
6070                 index = ddb_entry->sess->target_id;
6071                 status = qla4xxx_get_fwddb_entry(ha, index, fw_ddb_entry,
6072                                                  fw_ddb_dma, NULL, &next_idx,
6073                                                  &state, &conn_err, NULL,
6074                                                  &conn_id);
6075                 if (status == QLA_ERROR) {
6076                         ret = -ENOMEM;
6077                         break;
6078                 }
6079
6080                 qla4xxx_convert_param_ddb(fw_ddb_entry, tmp_tddb, NULL);
6081
6082                 status = qla4xxx_compare_tuple_ddb(ha, flash_tddb, tmp_tddb,
6083                                                    true);
6084                 if (status == QLA_SUCCESS) {
6085                         ret = qla4xxx_sysfs_ddb_logout_sid(ddb_entry->sess);
6086                         break;
6087                 }
6088         }
6089
6090         if (idx == MAX_DDB_ENTRIES)
6091                 ret = -ESRCH;
6092
6093 exit_ddb_logout:
6094         if (flash_tddb)
6095                 vfree(flash_tddb);
6096         if (tmp_tddb)
6097                 vfree(tmp_tddb);
6098         if (fw_ddb_entry)
6099                 dma_pool_free(ha->fw_ddb_dma_pool, fw_ddb_entry, fw_ddb_dma);
6100
6101         return ret;
6102 }
6103
6104 static int
6105 qla4xxx_sysfs_ddb_get_param(struct iscsi_bus_flash_session *fnode_sess,
6106                             int param, char *buf)
6107 {
6108         struct Scsi_Host *shost = iscsi_flash_session_to_shost(fnode_sess);
6109         struct scsi_qla_host *ha = to_qla_host(shost);
6110         struct iscsi_bus_flash_conn *fnode_conn;
6111         struct ql4_chap_table chap_tbl;
6112         struct device *dev;
6113         int parent_type, parent_index = 0xffff;
6114         int rc = 0;
6115
6116         dev = iscsi_find_flashnode_conn(fnode_sess);
6117         if (!dev)
6118                 return -EIO;
6119
6120         fnode_conn = iscsi_dev_to_flash_conn(dev);
6121
6122         switch (param) {
6123         case ISCSI_FLASHNODE_IS_FW_ASSIGNED_IPV6:
6124                 rc = sprintf(buf, "%u\n", fnode_conn->is_fw_assigned_ipv6);
6125                 break;
6126         case ISCSI_FLASHNODE_PORTAL_TYPE:
6127                 rc = sprintf(buf, "%s\n", fnode_sess->portal_type);
6128                 break;
6129         case ISCSI_FLASHNODE_AUTO_SND_TGT_DISABLE:
6130                 rc = sprintf(buf, "%u\n", fnode_sess->auto_snd_tgt_disable);
6131                 break;
6132         case ISCSI_FLASHNODE_DISCOVERY_SESS:
6133                 rc = sprintf(buf, "%u\n", fnode_sess->discovery_sess);
6134                 break;
6135         case ISCSI_FLASHNODE_ENTRY_EN:
6136                 rc = sprintf(buf, "%u\n", fnode_sess->entry_state);
6137                 break;
6138         case ISCSI_FLASHNODE_HDR_DGST_EN:
6139                 rc = sprintf(buf, "%u\n", fnode_conn->hdrdgst_en);
6140                 break;
6141         case ISCSI_FLASHNODE_DATA_DGST_EN:
6142                 rc = sprintf(buf, "%u\n", fnode_conn->datadgst_en);
6143                 break;
6144         case ISCSI_FLASHNODE_IMM_DATA_EN:
6145                 rc = sprintf(buf, "%u\n", fnode_sess->imm_data_en);
6146                 break;
6147         case ISCSI_FLASHNODE_INITIAL_R2T_EN:
6148                 rc = sprintf(buf, "%u\n", fnode_sess->initial_r2t_en);
6149                 break;
6150         case ISCSI_FLASHNODE_DATASEQ_INORDER:
6151                 rc = sprintf(buf, "%u\n", fnode_sess->dataseq_inorder_en);
6152                 break;
6153         case ISCSI_FLASHNODE_PDU_INORDER:
6154                 rc = sprintf(buf, "%u\n", fnode_sess->pdu_inorder_en);
6155                 break;
6156         case ISCSI_FLASHNODE_CHAP_AUTH_EN:
6157                 rc = sprintf(buf, "%u\n", fnode_sess->chap_auth_en);
6158                 break;
6159         case ISCSI_FLASHNODE_SNACK_REQ_EN:
6160                 rc = sprintf(buf, "%u\n", fnode_conn->snack_req_en);
6161                 break;
6162         case ISCSI_FLASHNODE_DISCOVERY_LOGOUT_EN:
6163                 rc = sprintf(buf, "%u\n", fnode_sess->discovery_logout_en);
6164                 break;
6165         case ISCSI_FLASHNODE_BIDI_CHAP_EN:
6166                 rc = sprintf(buf, "%u\n", fnode_sess->bidi_chap_en);
6167                 break;
6168         case ISCSI_FLASHNODE_DISCOVERY_AUTH_OPTIONAL:
6169                 rc = sprintf(buf, "%u\n", fnode_sess->discovery_auth_optional);
6170                 break;
6171         case ISCSI_FLASHNODE_ERL:
6172                 rc = sprintf(buf, "%u\n", fnode_sess->erl);
6173                 break;
6174         case ISCSI_FLASHNODE_TCP_TIMESTAMP_STAT:
6175                 rc = sprintf(buf, "%u\n", fnode_conn->tcp_timestamp_stat);
6176                 break;
6177         case ISCSI_FLASHNODE_TCP_NAGLE_DISABLE:
6178                 rc = sprintf(buf, "%u\n", fnode_conn->tcp_nagle_disable);
6179                 break;
6180         case ISCSI_FLASHNODE_TCP_WSF_DISABLE:
6181                 rc = sprintf(buf, "%u\n", fnode_conn->tcp_wsf_disable);
6182                 break;
6183         case ISCSI_FLASHNODE_TCP_TIMER_SCALE:
6184                 rc = sprintf(buf, "%u\n", fnode_conn->tcp_timer_scale);
6185                 break;
6186         case ISCSI_FLASHNODE_TCP_TIMESTAMP_EN:
6187                 rc = sprintf(buf, "%u\n", fnode_conn->tcp_timestamp_en);
6188                 break;
6189         case ISCSI_FLASHNODE_IP_FRAG_DISABLE:
6190                 rc = sprintf(buf, "%u\n", fnode_conn->fragment_disable);
6191                 break;
6192         case ISCSI_FLASHNODE_MAX_RECV_DLENGTH:
6193                 rc = sprintf(buf, "%u\n", fnode_conn->max_recv_dlength);
6194                 break;
6195         case ISCSI_FLASHNODE_MAX_XMIT_DLENGTH:
6196                 rc = sprintf(buf, "%u\n", fnode_conn->max_xmit_dlength);
6197                 break;
6198         case ISCSI_FLASHNODE_FIRST_BURST:
6199                 rc = sprintf(buf, "%u\n", fnode_sess->first_burst);
6200                 break;
6201         case ISCSI_FLASHNODE_DEF_TIME2WAIT:
6202                 rc = sprintf(buf, "%u\n", fnode_sess->time2wait);
6203                 break;
6204         case ISCSI_FLASHNODE_DEF_TIME2RETAIN:
6205                 rc = sprintf(buf, "%u\n", fnode_sess->time2retain);
6206                 break;
6207         case ISCSI_FLASHNODE_MAX_R2T:
6208                 rc = sprintf(buf, "%u\n", fnode_sess->max_r2t);
6209                 break;
6210         case ISCSI_FLASHNODE_KEEPALIVE_TMO:
6211                 rc = sprintf(buf, "%u\n", fnode_conn->keepalive_timeout);
6212                 break;
6213         case ISCSI_FLASHNODE_ISID:
6214                 rc = sprintf(buf, "%02x%02x%02x%02x%02x%02x\n",
6215                              fnode_sess->isid[0], fnode_sess->isid[1],
6216                              fnode_sess->isid[2], fnode_sess->isid[3],
6217                              fnode_sess->isid[4], fnode_sess->isid[5]);
6218                 break;
6219         case ISCSI_FLASHNODE_TSID:
6220                 rc = sprintf(buf, "%u\n", fnode_sess->tsid);
6221                 break;
6222         case ISCSI_FLASHNODE_PORT:
6223                 rc = sprintf(buf, "%d\n", fnode_conn->port);
6224                 break;
6225         case ISCSI_FLASHNODE_MAX_BURST:
6226                 rc = sprintf(buf, "%u\n", fnode_sess->max_burst);
6227                 break;
6228         case ISCSI_FLASHNODE_DEF_TASKMGMT_TMO:
6229                 rc = sprintf(buf, "%u\n",
6230                              fnode_sess->default_taskmgmt_timeout);
6231                 break;
6232         case ISCSI_FLASHNODE_IPADDR:
6233                 if (!strncmp(fnode_sess->portal_type, PORTAL_TYPE_IPV6, 4))
6234                         rc = sprintf(buf, "%pI6\n", fnode_conn->ipaddress);
6235                 else
6236                         rc = sprintf(buf, "%pI4\n", fnode_conn->ipaddress);
6237                 break;
6238         case ISCSI_FLASHNODE_ALIAS:
6239                 if (fnode_sess->targetalias)
6240                         rc = sprintf(buf, "%s\n", fnode_sess->targetalias);
6241                 else
6242                         rc = sprintf(buf, "\n");
6243                 break;
6244         case ISCSI_FLASHNODE_REDIRECT_IPADDR:
6245                 if (!strncmp(fnode_sess->portal_type, PORTAL_TYPE_IPV6, 4))
6246                         rc = sprintf(buf, "%pI6\n",
6247                                      fnode_conn->redirect_ipaddr);
6248                 else
6249                         rc = sprintf(buf, "%pI4\n",
6250                                      fnode_conn->redirect_ipaddr);
6251                 break;
6252         case ISCSI_FLASHNODE_MAX_SEGMENT_SIZE:
6253                 rc = sprintf(buf, "%u\n", fnode_conn->max_segment_size);
6254                 break;
6255         case ISCSI_FLASHNODE_LOCAL_PORT:
6256                 rc = sprintf(buf, "%u\n", fnode_conn->local_port);
6257                 break;
6258         case ISCSI_FLASHNODE_IPV4_TOS:
6259                 rc = sprintf(buf, "%u\n", fnode_conn->ipv4_tos);
6260                 break;
6261         case ISCSI_FLASHNODE_IPV6_TC:
6262                 if (!strncmp(fnode_sess->portal_type, PORTAL_TYPE_IPV6, 4))
6263                         rc = sprintf(buf, "%u\n",
6264                                      fnode_conn->ipv6_traffic_class);
6265                 else
6266                         rc = sprintf(buf, "\n");
6267                 break;
6268         case ISCSI_FLASHNODE_IPV6_FLOW_LABEL:
6269                 rc = sprintf(buf, "%u\n", fnode_conn->ipv6_flow_label);
6270                 break;
6271         case ISCSI_FLASHNODE_LINK_LOCAL_IPV6:
6272                 if (!strncmp(fnode_sess->portal_type, PORTAL_TYPE_IPV6, 4))
6273                         rc = sprintf(buf, "%pI6\n",
6274                                      fnode_conn->link_local_ipv6_addr);
6275                 else
6276                         rc = sprintf(buf, "\n");
6277                 break;
6278         case ISCSI_FLASHNODE_DISCOVERY_PARENT_IDX:
6279                 if (fnode_sess->discovery_parent_idx < MAX_DDB_ENTRIES)
6280                         parent_index = fnode_sess->discovery_parent_idx;
6281
6282                 rc = sprintf(buf, "%u\n", parent_index);
6283                 break;
6284         case ISCSI_FLASHNODE_DISCOVERY_PARENT_TYPE:
6285                 if (fnode_sess->discovery_parent_type == DDB_ISNS)
6286                         parent_type = ISCSI_DISC_PARENT_ISNS;
6287                 else if (fnode_sess->discovery_parent_type == DDB_NO_LINK)
6288                         parent_type = ISCSI_DISC_PARENT_UNKNOWN;
6289                 else if (fnode_sess->discovery_parent_type < MAX_DDB_ENTRIES)
6290                         parent_type = ISCSI_DISC_PARENT_SENDTGT;
6291                 else
6292                         parent_type = ISCSI_DISC_PARENT_UNKNOWN;
6293
6294                 rc = sprintf(buf, "%s\n",
6295                              iscsi_get_discovery_parent_name(parent_type));
6296                 break;
6297         case ISCSI_FLASHNODE_NAME:
6298                 if (fnode_sess->targetname)
6299                         rc = sprintf(buf, "%s\n", fnode_sess->targetname);
6300                 else
6301                         rc = sprintf(buf, "\n");
6302                 break;
6303         case ISCSI_FLASHNODE_TPGT:
6304                 rc = sprintf(buf, "%u\n", fnode_sess->tpgt);
6305                 break;
6306         case ISCSI_FLASHNODE_TCP_XMIT_WSF:
6307                 rc = sprintf(buf, "%u\n", fnode_conn->tcp_xmit_wsf);
6308                 break;
6309         case ISCSI_FLASHNODE_TCP_RECV_WSF:
6310                 rc = sprintf(buf, "%u\n", fnode_conn->tcp_recv_wsf);
6311                 break;
6312         case ISCSI_FLASHNODE_CHAP_OUT_IDX:
6313                 rc = sprintf(buf, "%u\n", fnode_sess->chap_out_idx);
6314                 break;
6315         case ISCSI_FLASHNODE_USERNAME:
6316                 if (fnode_sess->chap_auth_en) {
6317                         qla4xxx_get_uni_chap_at_index(ha,
6318                                                       chap_tbl.name,
6319                                                       chap_tbl.secret,
6320                                                       fnode_sess->chap_out_idx);
6321                         rc = sprintf(buf, "%s\n", chap_tbl.name);
6322                 } else {
6323                         rc = sprintf(buf, "\n");
6324                 }
6325                 break;
6326         case ISCSI_FLASHNODE_PASSWORD:
6327                 if (fnode_sess->chap_auth_en) {
6328                         qla4xxx_get_uni_chap_at_index(ha,
6329                                                       chap_tbl.name,
6330                                                       chap_tbl.secret,
6331                                                       fnode_sess->chap_out_idx);
6332                         rc = sprintf(buf, "%s\n", chap_tbl.secret);
6333                 } else {
6334                         rc = sprintf(buf, "\n");
6335                 }
6336                 break;
6337         case ISCSI_FLASHNODE_STATSN:
6338                 rc = sprintf(buf, "%u\n", fnode_conn->statsn);
6339                 break;
6340         case ISCSI_FLASHNODE_EXP_STATSN:
6341                 rc = sprintf(buf, "%u\n", fnode_conn->exp_statsn);
6342                 break;
6343         case ISCSI_FLASHNODE_IS_BOOT_TGT:
6344                 rc = sprintf(buf, "%u\n", fnode_sess->is_boot_target);
6345                 break;
6346         default:
6347                 rc = -ENOSYS;
6348                 break;
6349         }
6350
6351         put_device(dev);
6352         return rc;
6353 }
6354
6355 /**
6356  * qla4xxx_sysfs_ddb_set_param - Set parameter for firmware DDB entry
6357  * @fnode_sess: pointer to session attrs of flash ddb entry
6358  * @fnode_conn: pointer to connection attrs of flash ddb entry
6359  * @data: Parameters and their values to update
6360  * @len: len of data
6361  *
6362  * This sets the parameter of flash ddb entry and writes them to flash
6363  **/
6364 static int
6365 qla4xxx_sysfs_ddb_set_param(struct iscsi_bus_flash_session *fnode_sess,
6366                             struct iscsi_bus_flash_conn *fnode_conn,
6367                             void *data, int len)
6368 {
6369         struct Scsi_Host *shost = iscsi_flash_session_to_shost(fnode_sess);
6370         struct scsi_qla_host *ha = to_qla_host(shost);
6371         struct iscsi_flashnode_param_info *fnode_param;
6372         struct nlattr *attr;
6373         int rc = QLA_ERROR;
6374         uint32_t rem = len;
6375
6376         nla_for_each_attr(attr, data, len, rem) {
6377                 fnode_param = nla_data(attr);
6378
6379                 switch (fnode_param->param) {
6380                 case ISCSI_FLASHNODE_IS_FW_ASSIGNED_IPV6:
6381                         fnode_conn->is_fw_assigned_ipv6 = fnode_param->value[0];
6382                         break;
6383                 case ISCSI_FLASHNODE_PORTAL_TYPE:
6384                         memcpy(fnode_sess->portal_type, fnode_param->value,
6385                                strlen(fnode_sess->portal_type));
6386                         break;
6387                 case ISCSI_FLASHNODE_AUTO_SND_TGT_DISABLE:
6388                         fnode_sess->auto_snd_tgt_disable =
6389                                                         fnode_param->value[0];
6390                         break;
6391                 case ISCSI_FLASHNODE_DISCOVERY_SESS:
6392                         fnode_sess->discovery_sess = fnode_param->value[0];
6393                         break;
6394                 case ISCSI_FLASHNODE_ENTRY_EN:
6395                         fnode_sess->entry_state = fnode_param->value[0];
6396                         break;
6397                 case ISCSI_FLASHNODE_HDR_DGST_EN:
6398                         fnode_conn->hdrdgst_en = fnode_param->value[0];
6399                         break;
6400                 case ISCSI_FLASHNODE_DATA_DGST_EN:
6401                         fnode_conn->datadgst_en = fnode_param->value[0];
6402                         break;
6403                 case ISCSI_FLASHNODE_IMM_DATA_EN:
6404                         fnode_sess->imm_data_en = fnode_param->value[0];
6405                         break;
6406                 case ISCSI_FLASHNODE_INITIAL_R2T_EN:
6407                         fnode_sess->initial_r2t_en = fnode_param->value[0];
6408                         break;
6409                 case ISCSI_FLASHNODE_DATASEQ_INORDER:
6410                         fnode_sess->dataseq_inorder_en = fnode_param->value[0];
6411                         break;
6412                 case ISCSI_FLASHNODE_PDU_INORDER:
6413                         fnode_sess->pdu_inorder_en = fnode_param->value[0];
6414                         break;
6415                 case ISCSI_FLASHNODE_CHAP_AUTH_EN:
6416                         fnode_sess->chap_auth_en = fnode_param->value[0];
6417                         break;
6418                 case ISCSI_FLASHNODE_SNACK_REQ_EN:
6419                         fnode_conn->snack_req_en = fnode_param->value[0];
6420                         break;
6421                 case ISCSI_FLASHNODE_DISCOVERY_LOGOUT_EN:
6422                         fnode_sess->discovery_logout_en = fnode_param->value[0];
6423                         break;
6424                 case ISCSI_FLASHNODE_BIDI_CHAP_EN:
6425                         fnode_sess->bidi_chap_en = fnode_param->value[0];
6426                         break;
6427                 case ISCSI_FLASHNODE_DISCOVERY_AUTH_OPTIONAL:
6428                         fnode_sess->discovery_auth_optional =
6429                                                         fnode_param->value[0];
6430                         break;
6431                 case ISCSI_FLASHNODE_ERL:
6432                         fnode_sess->erl = fnode_param->value[0];
6433                         break;
6434                 case ISCSI_FLASHNODE_TCP_TIMESTAMP_STAT:
6435                         fnode_conn->tcp_timestamp_stat = fnode_param->value[0];
6436                         break;
6437                 case ISCSI_FLASHNODE_TCP_NAGLE_DISABLE:
6438                         fnode_conn->tcp_nagle_disable = fnode_param->value[0];
6439                         break;
6440                 case ISCSI_FLASHNODE_TCP_WSF_DISABLE:
6441                         fnode_conn->tcp_wsf_disable = fnode_param->value[0];
6442                         break;
6443                 case ISCSI_FLASHNODE_TCP_TIMER_SCALE:
6444                         fnode_conn->tcp_timer_scale = fnode_param->value[0];
6445                         break;
6446                 case ISCSI_FLASHNODE_TCP_TIMESTAMP_EN:
6447                         fnode_conn->tcp_timestamp_en = fnode_param->value[0];
6448                         break;
6449                 case ISCSI_FLASHNODE_IP_FRAG_DISABLE:
6450                         fnode_conn->fragment_disable = fnode_param->value[0];
6451                         break;
6452                 case ISCSI_FLASHNODE_MAX_RECV_DLENGTH:
6453                         fnode_conn->max_recv_dlength =
6454                                         *(unsigned *)fnode_param->value;
6455                         break;
6456                 case ISCSI_FLASHNODE_MAX_XMIT_DLENGTH:
6457                         fnode_conn->max_xmit_dlength =
6458                                         *(unsigned *)fnode_param->value;
6459                         break;
6460                 case ISCSI_FLASHNODE_FIRST_BURST:
6461                         fnode_sess->first_burst =
6462                                         *(unsigned *)fnode_param->value;
6463                         break;
6464                 case ISCSI_FLASHNODE_DEF_TIME2WAIT:
6465                         fnode_sess->time2wait = *(uint16_t *)fnode_param->value;
6466                         break;
6467                 case ISCSI_FLASHNODE_DEF_TIME2RETAIN:
6468                         fnode_sess->time2retain =
6469                                                 *(uint16_t *)fnode_param->value;
6470                         break;
6471                 case ISCSI_FLASHNODE_MAX_R2T:
6472                         fnode_sess->max_r2t =
6473                                         *(uint16_t *)fnode_param->value;
6474                         break;
6475                 case ISCSI_FLASHNODE_KEEPALIVE_TMO:
6476                         fnode_conn->keepalive_timeout =
6477                                 *(uint16_t *)fnode_param->value;
6478                         break;
6479                 case ISCSI_FLASHNODE_ISID:
6480                         memcpy(fnode_sess->isid, fnode_param->value,
6481                                sizeof(fnode_sess->isid));
6482                         break;
6483                 case ISCSI_FLASHNODE_TSID:
6484                         fnode_sess->tsid = *(uint16_t *)fnode_param->value;
6485                         break;
6486                 case ISCSI_FLASHNODE_PORT:
6487                         fnode_conn->port = *(uint16_t *)fnode_param->value;
6488                         break;
6489                 case ISCSI_FLASHNODE_MAX_BURST:
6490                         fnode_sess->max_burst = *(unsigned *)fnode_param->value;
6491                         break;
6492                 case ISCSI_FLASHNODE_DEF_TASKMGMT_TMO:
6493                         fnode_sess->default_taskmgmt_timeout =
6494                                                 *(uint16_t *)fnode_param->value;
6495                         break;
6496                 case ISCSI_FLASHNODE_IPADDR:
6497                         memcpy(fnode_conn->ipaddress, fnode_param->value,
6498                                IPv6_ADDR_LEN);
6499                         break;
6500                 case ISCSI_FLASHNODE_ALIAS:
6501                         rc = iscsi_switch_str_param(&fnode_sess->targetalias,
6502                                                     (char *)fnode_param->value);
6503                         break;
6504                 case ISCSI_FLASHNODE_REDIRECT_IPADDR:
6505                         memcpy(fnode_conn->redirect_ipaddr, fnode_param->value,
6506                                IPv6_ADDR_LEN);
6507                         break;
6508                 case ISCSI_FLASHNODE_MAX_SEGMENT_SIZE:
6509                         fnode_conn->max_segment_size =
6510                                         *(unsigned *)fnode_param->value;
6511                         break;
6512                 case ISCSI_FLASHNODE_LOCAL_PORT:
6513                         fnode_conn->local_port =
6514                                                 *(uint16_t *)fnode_param->value;
6515                         break;
6516                 case ISCSI_FLASHNODE_IPV4_TOS:
6517                         fnode_conn->ipv4_tos = fnode_param->value[0];
6518                         break;
6519                 case ISCSI_FLASHNODE_IPV6_TC:
6520                         fnode_conn->ipv6_traffic_class = fnode_param->value[0];
6521                         break;
6522                 case ISCSI_FLASHNODE_IPV6_FLOW_LABEL:
6523                         fnode_conn->ipv6_flow_label = fnode_param->value[0];
6524                         break;
6525                 case ISCSI_FLASHNODE_NAME:
6526                         rc = iscsi_switch_str_param(&fnode_sess->targetname,
6527                                                     (char *)fnode_param->value);
6528                         break;
6529                 case ISCSI_FLASHNODE_TPGT:
6530                         fnode_sess->tpgt = *(uint16_t *)fnode_param->value;
6531                         break;
6532                 case ISCSI_FLASHNODE_LINK_LOCAL_IPV6:
6533                         memcpy(fnode_conn->link_local_ipv6_addr,
6534                                fnode_param->value, IPv6_ADDR_LEN);
6535                         break;
6536                 case ISCSI_FLASHNODE_DISCOVERY_PARENT_TYPE:
6537                         fnode_sess->discovery_parent_type =
6538                                                 *(uint16_t *)fnode_param->value;
6539                         break;
6540                 case ISCSI_FLASHNODE_TCP_XMIT_WSF:
6541                         fnode_conn->tcp_xmit_wsf =
6542                                                 *(uint8_t *)fnode_param->value;
6543                         break;
6544                 case ISCSI_FLASHNODE_TCP_RECV_WSF:
6545                         fnode_conn->tcp_recv_wsf =
6546                                                 *(uint8_t *)fnode_param->value;
6547                         break;
6548                 case ISCSI_FLASHNODE_STATSN:
6549                         fnode_conn->statsn = *(uint32_t *)fnode_param->value;
6550                         break;
6551                 case ISCSI_FLASHNODE_EXP_STATSN:
6552                         fnode_conn->exp_statsn =
6553                                                 *(uint32_t *)fnode_param->value;
6554                         break;
6555                 default:
6556                         ql4_printk(KERN_ERR, ha,
6557                                    "%s: No such sysfs attribute\n", __func__);
6558                         rc = -ENOSYS;
6559                         goto exit_set_param;
6560                 }
6561         }
6562
6563         rc = qla4xxx_sysfs_ddb_apply(fnode_sess, fnode_conn);
6564
6565 exit_set_param:
6566         return rc;
6567 }
6568
6569 /**
6570  * qla4xxx_sysfs_ddb_delete - Delete firmware DDB entry
6571  * @fnode_sess: pointer to session attrs of flash ddb entry
6572  *
6573  * This invalidates the flash ddb entry at the given index
6574  **/
6575 static int qla4xxx_sysfs_ddb_delete(struct iscsi_bus_flash_session *fnode_sess)
6576 {
6577         struct Scsi_Host *shost = iscsi_flash_session_to_shost(fnode_sess);
6578         struct scsi_qla_host *ha = to_qla_host(shost);
6579         uint32_t dev_db_start_offset;
6580         uint32_t dev_db_end_offset;
6581         struct dev_db_entry *fw_ddb_entry = NULL;
6582         dma_addr_t fw_ddb_entry_dma;
6583         uint16_t *ddb_cookie = NULL;
6584         size_t ddb_size = 0;
6585         void *pddb = NULL;
6586         int target_id;
6587         int rc = 0;
6588
6589         if (fnode_sess->is_boot_target) {
6590                 rc = -EPERM;
6591                 DEBUG2(ql4_printk(KERN_ERR, ha,
6592                                   "%s: Deletion of boot target entry is not permitted.\n",
6593                                   __func__));
6594                 goto exit_ddb_del;
6595         }
6596
6597         if (fnode_sess->flash_state == DEV_DB_NON_PERSISTENT)
6598                 goto sysfs_ddb_del;
6599
6600         if (is_qla40XX(ha)) {
6601                 dev_db_start_offset = FLASH_OFFSET_DB_INFO;
6602                 dev_db_end_offset = FLASH_OFFSET_DB_END;
6603                 dev_db_start_offset += (fnode_sess->target_id *
6604                                        sizeof(*fw_ddb_entry));
6605                 ddb_size = sizeof(*fw_ddb_entry);
6606         } else {
6607                 dev_db_start_offset = FLASH_RAW_ACCESS_ADDR +
6608                                       (ha->hw.flt_region_ddb << 2);
6609                 /* flt_ddb_size is DDB table size for both ports
6610                  * so divide it by 2 to calculate the offset for second port
6611                  */
6612                 if (ha->port_num == 1)
6613                         dev_db_start_offset += (ha->hw.flt_ddb_size / 2);
6614
6615                 dev_db_end_offset = dev_db_start_offset +
6616                                     (ha->hw.flt_ddb_size / 2);
6617
6618                 dev_db_start_offset += (fnode_sess->target_id *
6619                                        sizeof(*fw_ddb_entry));
6620                 dev_db_start_offset += offsetof(struct dev_db_entry, cookie);
6621
6622                 ddb_size = sizeof(*ddb_cookie);
6623         }
6624
6625         DEBUG2(ql4_printk(KERN_ERR, ha, "%s: start offset=%u, end offset=%u\n",
6626                           __func__, dev_db_start_offset, dev_db_end_offset));
6627
6628         if (dev_db_start_offset > dev_db_end_offset) {
6629                 rc = -EIO;
6630                 DEBUG2(ql4_printk(KERN_ERR, ha, "%s:Invalid DDB index %u\n",
6631                                   __func__, fnode_sess->target_id));
6632                 goto exit_ddb_del;
6633         }
6634
6635         pddb = dma_alloc_coherent(&ha->pdev->dev, ddb_size,
6636                                   &fw_ddb_entry_dma, GFP_KERNEL);
6637         if (!pddb) {
6638                 rc = -ENOMEM;
6639                 DEBUG2(ql4_printk(KERN_ERR, ha,
6640                                   "%s: Unable to allocate dma buffer\n",
6641                                   __func__));
6642                 goto exit_ddb_del;
6643         }
6644
6645         if (is_qla40XX(ha)) {
6646                 fw_ddb_entry = pddb;
6647                 memset(fw_ddb_entry, 0, ddb_size);
6648                 ddb_cookie = &fw_ddb_entry->cookie;
6649         } else {
6650                 ddb_cookie = pddb;
6651         }
6652
6653         /* invalidate the cookie */
6654         *ddb_cookie = 0xFFEE;
6655         qla4xxx_set_flash(ha, fw_ddb_entry_dma, dev_db_start_offset,
6656                           ddb_size, FLASH_OPT_RMW_COMMIT);
6657
6658 sysfs_ddb_del:
6659         target_id = fnode_sess->target_id;
6660         iscsi_destroy_flashnode_sess(fnode_sess);
6661         ql4_printk(KERN_INFO, ha,
6662                    "%s: session and conn entries for flashnode %u of host %lu deleted\n",
6663                    __func__, target_id, ha->host_no);
6664 exit_ddb_del:
6665         if (pddb)
6666                 dma_free_coherent(&ha->pdev->dev, ddb_size, pddb,
6667                                   fw_ddb_entry_dma);
6668         return rc;
6669 }
6670
6671 /**
6672  * qla4xxx_sysfs_ddb_export - Create sysfs entries for firmware DDBs
6673  * @ha: pointer to adapter structure
6674  *
6675  * Export the firmware DDB for all send targets and normal targets to sysfs.
6676  **/
6677 static int qla4xxx_sysfs_ddb_export(struct scsi_qla_host *ha)
6678 {
6679         struct dev_db_entry *fw_ddb_entry = NULL;
6680         dma_addr_t fw_ddb_entry_dma;
6681         uint16_t max_ddbs;
6682         uint16_t idx = 0;
6683         int ret = QLA_SUCCESS;
6684
6685         fw_ddb_entry = dma_alloc_coherent(&ha->pdev->dev,
6686                                           sizeof(*fw_ddb_entry),
6687                                           &fw_ddb_entry_dma, GFP_KERNEL);
6688         if (!fw_ddb_entry) {
6689                 DEBUG2(ql4_printk(KERN_ERR, ha,
6690                                   "%s: Unable to allocate dma buffer\n",
6691                                   __func__));
6692                 return -ENOMEM;
6693         }
6694
6695         max_ddbs =  is_qla40XX(ha) ? MAX_PRST_DEV_DB_ENTRIES :
6696                                      MAX_DEV_DB_ENTRIES;
6697
6698         for (idx = 0; idx < max_ddbs; idx++) {
6699                 if (qla4xxx_flashdb_by_index(ha, fw_ddb_entry, fw_ddb_entry_dma,
6700                                              idx))
6701                         continue;
6702
6703                 ret = qla4xxx_sysfs_ddb_tgt_create(ha, fw_ddb_entry, &idx, 0);
6704                 if (ret) {
6705                         ret = -EIO;
6706                         break;
6707                 }
6708         }
6709
6710         dma_free_coherent(&ha->pdev->dev, sizeof(*fw_ddb_entry), fw_ddb_entry,
6711                           fw_ddb_entry_dma);
6712
6713         return ret;
6714 }
6715
6716 static void qla4xxx_sysfs_ddb_remove(struct scsi_qla_host *ha)
6717 {
6718         iscsi_destroy_all_flashnode(ha->host);
6719 }
6720
6721 /**
6722  * qla4xxx_build_ddb_list - Build ddb list and setup sessions
6723  * @ha: pointer to adapter structure
6724  * @is_reset: Is this init path or reset path
6725  *
6726  * Create a list of sendtargets (st) from firmware DDBs, issue send targets
6727  * using connection open, then create the list of normal targets (nt)
6728  * from firmware DDBs. Based on the list of nt setup session and connection
6729  * objects.
6730  **/
6731 void qla4xxx_build_ddb_list(struct scsi_qla_host *ha, int is_reset)
6732 {
6733         uint16_t tmo = 0;
6734         struct list_head list_st, list_nt;
6735         struct qla_ddb_index  *st_ddb_idx, *st_ddb_idx_tmp;
6736         unsigned long wtime;
6737
6738         if (!test_bit(AF_LINK_UP, &ha->flags)) {
6739                 set_bit(AF_BUILD_DDB_LIST, &ha->flags);
6740                 ha->is_reset = is_reset;
6741                 return;
6742         }
6743
6744         INIT_LIST_HEAD(&list_st);
6745         INIT_LIST_HEAD(&list_nt);
6746
6747         qla4xxx_build_st_list(ha, &list_st);
6748
6749         /* Before issuing conn open mbox, ensure all IPs states are configured
6750          * Note, conn open fails if IPs are not configured
6751          */
6752         qla4xxx_wait_for_ip_configuration(ha);
6753
6754         /* Go thru the STs and fire the sendtargets by issuing conn open mbx */
6755         list_for_each_entry_safe(st_ddb_idx, st_ddb_idx_tmp, &list_st, list) {
6756                 qla4xxx_conn_open(ha, st_ddb_idx->fw_ddb_idx);
6757         }
6758
6759         /* Wait to ensure all sendtargets are done for min 12 sec wait */
6760         tmo = ((ha->def_timeout > LOGIN_TOV) &&
6761                (ha->def_timeout < LOGIN_TOV * 10) ?
6762                ha->def_timeout : LOGIN_TOV);
6763
6764         DEBUG2(ql4_printk(KERN_INFO, ha,
6765                           "Default time to wait for build ddb %d\n", tmo));
6766
6767         wtime = jiffies + (HZ * tmo);
6768         do {
6769                 if (list_empty(&list_st))
6770                         break;
6771
6772                 qla4xxx_remove_failed_ddb(ha, &list_st);
6773                 schedule_timeout_uninterruptible(HZ / 10);
6774         } while (time_after(wtime, jiffies));
6775
6776         /* Free up the sendtargets list */
6777         qla4xxx_free_ddb_list(&list_st);
6778
6779         qla4xxx_build_nt_list(ha, &list_nt, is_reset);
6780
6781         qla4xxx_free_ddb_list(&list_nt);
6782
6783         qla4xxx_free_ddb_index(ha);
6784 }
6785
6786 /**
6787  * qla4xxx_wait_login_resp_boot_tgt -  Wait for iSCSI boot target login
6788  * response.
6789  * @ha: pointer to adapter structure
6790  *
6791  * When the boot entry is normal iSCSI target then DF_BOOT_TGT flag will be
6792  * set in DDB and we will wait for login response of boot targets during
6793  * probe.
6794  **/
6795 static void qla4xxx_wait_login_resp_boot_tgt(struct scsi_qla_host *ha)
6796 {
6797         struct ddb_entry *ddb_entry;
6798         struct dev_db_entry *fw_ddb_entry = NULL;
6799         dma_addr_t fw_ddb_entry_dma;
6800         unsigned long wtime;
6801         uint32_t ddb_state;
6802         int max_ddbs, idx, ret;
6803
6804         max_ddbs =  is_qla40XX(ha) ? MAX_DEV_DB_ENTRIES_40XX :
6805                                      MAX_DEV_DB_ENTRIES;
6806
6807         fw_ddb_entry = dma_alloc_coherent(&ha->pdev->dev, sizeof(*fw_ddb_entry),
6808                                           &fw_ddb_entry_dma, GFP_KERNEL);
6809         if (!fw_ddb_entry) {
6810                 ql4_printk(KERN_ERR, ha,
6811                            "%s: Unable to allocate dma buffer\n", __func__);
6812                 goto exit_login_resp;
6813         }
6814
6815         wtime = jiffies + (HZ * BOOT_LOGIN_RESP_TOV);
6816
6817         for (idx = 0; idx < max_ddbs; idx++) {
6818                 ddb_entry = qla4xxx_lookup_ddb_by_fw_index(ha, idx);
6819                 if (ddb_entry == NULL)
6820                         continue;
6821
6822                 if (test_bit(DF_BOOT_TGT, &ddb_entry->flags)) {
6823                         DEBUG2(ql4_printk(KERN_INFO, ha,
6824                                           "%s: DDB index [%d]\n", __func__,
6825                                           ddb_entry->fw_ddb_index));
6826                         do {
6827                                 ret = qla4xxx_get_fwddb_entry(ha,
6828                                                 ddb_entry->fw_ddb_index,
6829                                                 fw_ddb_entry, fw_ddb_entry_dma,
6830                                                 NULL, NULL, &ddb_state, NULL,
6831                                                 NULL, NULL);
6832                                 if (ret == QLA_ERROR)
6833                                         goto exit_login_resp;
6834
6835                                 if ((ddb_state == DDB_DS_SESSION_ACTIVE) ||
6836                                     (ddb_state == DDB_DS_SESSION_FAILED))
6837                                         break;
6838
6839                                 schedule_timeout_uninterruptible(HZ);
6840
6841                         } while ((time_after(wtime, jiffies)));
6842
6843                         if (!time_after(wtime, jiffies)) {
6844                                 DEBUG2(ql4_printk(KERN_INFO, ha,
6845                                                   "%s: Login response wait timer expired\n",
6846                                                   __func__));
6847                                  goto exit_login_resp;
6848                         }
6849                 }
6850         }
6851
6852 exit_login_resp:
6853         if (fw_ddb_entry)
6854                 dma_free_coherent(&ha->pdev->dev, sizeof(*fw_ddb_entry),
6855                                   fw_ddb_entry, fw_ddb_entry_dma);
6856 }
6857
6858 /**
6859  * qla4xxx_probe_adapter - callback function to probe HBA
6860  * @pdev: pointer to pci_dev structure
6861  * @pci_device_id: pointer to pci_device entry
6862  *
6863  * This routine will probe for Qlogic 4xxx iSCSI host adapters.
6864  * It returns zero if successful. It also initializes all data necessary for
6865  * the driver.
6866  **/
6867 static int qla4xxx_probe_adapter(struct pci_dev *pdev,
6868                                  const struct pci_device_id *ent)
6869 {
6870         int ret = -ENODEV, status;
6871         struct Scsi_Host *host;
6872         struct scsi_qla_host *ha;
6873         uint8_t init_retry_count = 0;
6874         char buf[34];
6875         struct qla4_8xxx_legacy_intr_set *nx_legacy_intr;
6876         uint32_t dev_state;
6877
6878         if (pci_enable_device(pdev))
6879                 return -1;
6880
6881         host = iscsi_host_alloc(&qla4xxx_driver_template, sizeof(*ha), 0);
6882         if (host == NULL) {
6883                 printk(KERN_WARNING
6884                        "qla4xxx: Couldn't allocate host from scsi layer!\n");
6885                 goto probe_disable_device;
6886         }
6887
6888         /* Clear our data area */
6889         ha = to_qla_host(host);
6890         memset(ha, 0, sizeof(*ha));
6891
6892         /* Save the information from PCI BIOS.  */
6893         ha->pdev = pdev;
6894         ha->host = host;
6895         ha->host_no = host->host_no;
6896         ha->func_num = PCI_FUNC(ha->pdev->devfn);
6897
6898         pci_enable_pcie_error_reporting(pdev);
6899
6900         /* Setup Runtime configurable options */
6901         if (is_qla8022(ha)) {
6902                 ha->isp_ops = &qla4_82xx_isp_ops;
6903                 ha->reg_tbl = (uint32_t *) qla4_82xx_reg_tbl;
6904                 ha->qdr_sn_window = -1;
6905                 ha->ddr_mn_window = -1;
6906                 ha->curr_window = 255;
6907                 nx_legacy_intr = &legacy_intr[ha->func_num];
6908                 ha->nx_legacy_intr.int_vec_bit = nx_legacy_intr->int_vec_bit;
6909                 ha->nx_legacy_intr.tgt_status_reg =
6910                         nx_legacy_intr->tgt_status_reg;
6911                 ha->nx_legacy_intr.tgt_mask_reg = nx_legacy_intr->tgt_mask_reg;
6912                 ha->nx_legacy_intr.pci_int_reg = nx_legacy_intr->pci_int_reg;
6913         } else if (is_qla8032(ha)) {
6914                 ha->isp_ops = &qla4_83xx_isp_ops;
6915                 ha->reg_tbl = (uint32_t *)qla4_83xx_reg_tbl;
6916         } else {
6917                 ha->isp_ops = &qla4xxx_isp_ops;
6918         }
6919
6920         if (is_qla80XX(ha)) {
6921                 rwlock_init(&ha->hw_lock);
6922                 ha->pf_bit = ha->func_num << 16;
6923                 /* Set EEH reset type to fundamental if required by hba */
6924                 pdev->needs_freset = 1;
6925         }
6926
6927         /* Configure PCI I/O space. */
6928         ret = ha->isp_ops->iospace_config(ha);
6929         if (ret)
6930                 goto probe_failed_ioconfig;
6931
6932         ql4_printk(KERN_INFO, ha, "Found an ISP%04x, irq %d, iobase 0x%p\n",
6933                    pdev->device, pdev->irq, ha->reg);
6934
6935         qla4xxx_config_dma_addressing(ha);
6936
6937         /* Initialize lists and spinlocks. */
6938         INIT_LIST_HEAD(&ha->free_srb_q);
6939
6940         mutex_init(&ha->mbox_sem);
6941         mutex_init(&ha->chap_sem);
6942         init_completion(&ha->mbx_intr_comp);
6943         init_completion(&ha->disable_acb_comp);
6944
6945         spin_lock_init(&ha->hardware_lock);
6946         spin_lock_init(&ha->work_lock);
6947
6948         /* Initialize work list */
6949         INIT_LIST_HEAD(&ha->work_list);
6950
6951         /* Allocate dma buffers */
6952         if (qla4xxx_mem_alloc(ha)) {
6953                 ql4_printk(KERN_WARNING, ha,
6954                     "[ERROR] Failed to allocate memory for adapter\n");
6955
6956                 ret = -ENOMEM;
6957                 goto probe_failed;
6958         }
6959
6960         host->cmd_per_lun = 3;
6961         host->max_channel = 0;
6962         host->max_lun = MAX_LUNS - 1;
6963         host->max_id = MAX_TARGETS;
6964         host->max_cmd_len = IOCB_MAX_CDB_LEN;
6965         host->can_queue = MAX_SRBS ;
6966         host->transportt = qla4xxx_scsi_transport;
6967
6968         ret = scsi_init_shared_tag_map(host, MAX_SRBS);
6969         if (ret) {
6970                 ql4_printk(KERN_WARNING, ha,
6971                            "%s: scsi_init_shared_tag_map failed\n", __func__);
6972                 goto probe_failed;
6973         }
6974
6975         pci_set_drvdata(pdev, ha);
6976
6977         ret = scsi_add_host(host, &pdev->dev);
6978         if (ret)
6979                 goto probe_failed;
6980
6981         if (is_qla80XX(ha))
6982                 qla4_8xxx_get_flash_info(ha);
6983
6984         if (is_qla8032(ha)) {
6985                 qla4_83xx_read_reset_template(ha);
6986                 /*
6987                  * NOTE: If ql4dontresethba==1, set IDC_CTRL DONTRESET_BIT0.
6988                  * If DONRESET_BIT0 is set, drivers should not set dev_state
6989                  * to NEED_RESET. But if NEED_RESET is set, drivers should
6990                  * should honor the reset.
6991                  */
6992                 if (ql4xdontresethba == 1)
6993                         qla4_83xx_set_idc_dontreset(ha);
6994         }
6995
6996         /*
6997          * Initialize the Host adapter request/response queues and
6998          * firmware
6999          * NOTE: interrupts enabled upon successful completion
7000          */
7001         status = qla4xxx_initialize_adapter(ha, INIT_ADAPTER);
7002
7003         /* Dont retry adapter initialization if IRQ allocation failed */
7004         if (is_qla80XX(ha) && !test_bit(AF_IRQ_ATTACHED, &ha->flags)) {
7005                 ql4_printk(KERN_WARNING, ha, "%s: Skipping retry of adapter initialization\n",
7006                            __func__);
7007                 goto skip_retry_init;
7008         }
7009
7010         while ((!test_bit(AF_ONLINE, &ha->flags)) &&
7011             init_retry_count++ < MAX_INIT_RETRIES) {
7012
7013                 if (is_qla80XX(ha)) {
7014                         ha->isp_ops->idc_lock(ha);
7015                         dev_state = qla4_8xxx_rd_direct(ha,
7016                                                         QLA8XXX_CRB_DEV_STATE);
7017                         ha->isp_ops->idc_unlock(ha);
7018                         if (dev_state == QLA8XXX_DEV_FAILED) {
7019                                 ql4_printk(KERN_WARNING, ha, "%s: don't retry "
7020                                     "initialize adapter. H/W is in failed state\n",
7021                                     __func__);
7022                                 break;
7023                         }
7024                 }
7025                 DEBUG2(printk("scsi: %s: retrying adapter initialization "
7026                               "(%d)\n", __func__, init_retry_count));
7027
7028                 if (ha->isp_ops->reset_chip(ha) == QLA_ERROR)
7029                         continue;
7030
7031                 status = qla4xxx_initialize_adapter(ha, INIT_ADAPTER);
7032         }
7033
7034 skip_retry_init:
7035         if (!test_bit(AF_ONLINE, &ha->flags)) {
7036                 ql4_printk(KERN_WARNING, ha, "Failed to initialize adapter\n");
7037
7038                 if ((is_qla8022(ha) && ql4xdontresethba) ||
7039                     (is_qla8032(ha) && qla4_83xx_idc_dontreset(ha))) {
7040                         /* Put the device in failed state. */
7041                         DEBUG2(printk(KERN_ERR "HW STATE: FAILED\n"));
7042                         ha->isp_ops->idc_lock(ha);
7043                         qla4_8xxx_wr_direct(ha, QLA8XXX_CRB_DEV_STATE,
7044                                             QLA8XXX_DEV_FAILED);
7045                         ha->isp_ops->idc_unlock(ha);
7046                 }
7047                 ret = -ENODEV;
7048                 goto remove_host;
7049         }
7050
7051         /* Startup the kernel thread for this host adapter. */
7052         DEBUG2(printk("scsi: %s: Starting kernel thread for "
7053                       "qla4xxx_dpc\n", __func__));
7054         sprintf(buf, "qla4xxx_%lu_dpc", ha->host_no);
7055         ha->dpc_thread = create_singlethread_workqueue(buf);
7056         if (!ha->dpc_thread) {
7057                 ql4_printk(KERN_WARNING, ha, "Unable to start DPC thread!\n");
7058                 ret = -ENODEV;
7059                 goto remove_host;
7060         }
7061         INIT_WORK(&ha->dpc_work, qla4xxx_do_dpc);
7062
7063         ha->task_wq = alloc_workqueue("qla4xxx_%lu_task", WQ_MEM_RECLAIM, 1,
7064                                       ha->host_no);
7065         if (!ha->task_wq) {
7066                 ql4_printk(KERN_WARNING, ha, "Unable to start task thread!\n");
7067                 ret = -ENODEV;
7068                 goto remove_host;
7069         }
7070
7071         /*
7072          * For ISP-8XXX, request_irqs is called in qla4_8xxx_load_risc
7073          * (which is called indirectly by qla4xxx_initialize_adapter),
7074          * so that irqs will be registered after crbinit but before
7075          * mbx_intr_enable.
7076          */
7077         if (is_qla40XX(ha)) {
7078                 ret = qla4xxx_request_irqs(ha);
7079                 if (ret) {
7080                         ql4_printk(KERN_WARNING, ha, "Failed to reserve "
7081                             "interrupt %d already in use.\n", pdev->irq);
7082                         goto remove_host;
7083                 }
7084         }
7085
7086         pci_save_state(ha->pdev);
7087         ha->isp_ops->enable_intrs(ha);
7088
7089         /* Start timer thread. */
7090         qla4xxx_start_timer(ha, qla4xxx_timer, 1);
7091
7092         set_bit(AF_INIT_DONE, &ha->flags);
7093
7094         qla4_8xxx_alloc_sysfs_attr(ha);
7095
7096         printk(KERN_INFO
7097                " QLogic iSCSI HBA Driver version: %s\n"
7098                "  QLogic ISP%04x @ %s, host#=%ld, fw=%02d.%02d.%02d.%02d\n",
7099                qla4xxx_version_str, ha->pdev->device, pci_name(ha->pdev),
7100                ha->host_no, ha->firmware_version[0], ha->firmware_version[1],
7101                ha->patch_number, ha->build_number);
7102
7103         /* Set the driver version */
7104         if (is_qla80XX(ha))
7105                 qla4_8xxx_set_param(ha, SET_DRVR_VERSION);
7106
7107         if (qla4xxx_setup_boot_info(ha))
7108                 ql4_printk(KERN_ERR, ha,
7109                            "%s: No iSCSI boot target configured\n", __func__);
7110
7111         if (qla4xxx_sysfs_ddb_export(ha))
7112                 ql4_printk(KERN_ERR, ha,
7113                            "%s: Error exporting ddb to sysfs\n", __func__);
7114
7115                 /* Perform the build ddb list and login to each */
7116         qla4xxx_build_ddb_list(ha, INIT_ADAPTER);
7117         iscsi_host_for_each_session(ha->host, qla4xxx_login_flash_ddb);
7118         qla4xxx_wait_login_resp_boot_tgt(ha);
7119
7120         qla4xxx_create_chap_list(ha);
7121
7122         qla4xxx_create_ifaces(ha);
7123         return 0;
7124
7125 remove_host:
7126         scsi_remove_host(ha->host);
7127
7128 probe_failed:
7129         qla4xxx_free_adapter(ha);
7130
7131 probe_failed_ioconfig:
7132         pci_disable_pcie_error_reporting(pdev);
7133         scsi_host_put(ha->host);
7134
7135 probe_disable_device:
7136         pci_disable_device(pdev);
7137
7138         return ret;
7139 }
7140
7141 /**
7142  * qla4xxx_prevent_other_port_reinit - prevent other port from re-initialize
7143  * @ha: pointer to adapter structure
7144  *
7145  * Mark the other ISP-4xxx port to indicate that the driver is being removed,
7146  * so that the other port will not re-initialize while in the process of
7147  * removing the ha due to driver unload or hba hotplug.
7148  **/
7149 static void qla4xxx_prevent_other_port_reinit(struct scsi_qla_host *ha)
7150 {
7151         struct scsi_qla_host *other_ha = NULL;
7152         struct pci_dev *other_pdev = NULL;
7153         int fn = ISP4XXX_PCI_FN_2;
7154
7155         /*iscsi function numbers for ISP4xxx is 1 and 3*/
7156         if (PCI_FUNC(ha->pdev->devfn) & BIT_1)
7157                 fn = ISP4XXX_PCI_FN_1;
7158
7159         other_pdev =
7160                 pci_get_domain_bus_and_slot(pci_domain_nr(ha->pdev->bus),
7161                 ha->pdev->bus->number, PCI_DEVFN(PCI_SLOT(ha->pdev->devfn),
7162                 fn));
7163
7164         /* Get other_ha if other_pdev is valid and state is enable*/
7165         if (other_pdev) {
7166                 if (atomic_read(&other_pdev->enable_cnt)) {
7167                         other_ha = pci_get_drvdata(other_pdev);
7168                         if (other_ha) {
7169                                 set_bit(AF_HA_REMOVAL, &other_ha->flags);
7170                                 DEBUG2(ql4_printk(KERN_INFO, ha, "%s: "
7171                                     "Prevent %s reinit\n", __func__,
7172                                     dev_name(&other_ha->pdev->dev)));
7173                         }
7174                 }
7175                 pci_dev_put(other_pdev);
7176         }
7177 }
7178
7179 static void qla4xxx_destroy_fw_ddb_session(struct scsi_qla_host *ha)
7180 {
7181         struct ddb_entry *ddb_entry;
7182         int options;
7183         int idx;
7184
7185         for (idx = 0; idx < MAX_DDB_ENTRIES; idx++) {
7186
7187                 ddb_entry = qla4xxx_lookup_ddb_by_fw_index(ha, idx);
7188                 if ((ddb_entry != NULL) &&
7189                     (ddb_entry->ddb_type == FLASH_DDB)) {
7190
7191                         options = LOGOUT_OPTION_CLOSE_SESSION;
7192                         if (qla4xxx_session_logout_ddb(ha, ddb_entry, options)
7193                             == QLA_ERROR)
7194                                 ql4_printk(KERN_ERR, ha, "%s: Logout failed\n",
7195                                            __func__);
7196
7197                         qla4xxx_clear_ddb_entry(ha, ddb_entry->fw_ddb_index);
7198                         /*
7199                          * we have decremented the reference count of the driver
7200                          * when we setup the session to have the driver unload
7201                          * to be seamless without actually destroying the
7202                          * session
7203                          **/
7204                         try_module_get(qla4xxx_iscsi_transport.owner);
7205                         iscsi_destroy_endpoint(ddb_entry->conn->ep);
7206                         qla4xxx_free_ddb(ha, ddb_entry);
7207                         iscsi_session_teardown(ddb_entry->sess);
7208                 }
7209         }
7210 }
7211 /**
7212  * qla4xxx_remove_adapter - callback function to remove adapter.
7213  * @pci_dev: PCI device pointer
7214  **/
7215 static void qla4xxx_remove_adapter(struct pci_dev *pdev)
7216 {
7217         struct scsi_qla_host *ha;
7218
7219         /*
7220          * If the PCI device is disabled then it means probe_adapter had
7221          * failed and resources already cleaned up on probe_adapter exit.
7222          */
7223         if (!pci_is_enabled(pdev))
7224                 return;
7225
7226         ha = pci_get_drvdata(pdev);
7227
7228         if (is_qla40XX(ha))
7229                 qla4xxx_prevent_other_port_reinit(ha);
7230
7231         /* destroy iface from sysfs */
7232         qla4xxx_destroy_ifaces(ha);
7233
7234         if ((!ql4xdisablesysfsboot) && ha->boot_kset)
7235                 iscsi_boot_destroy_kset(ha->boot_kset);
7236
7237         qla4xxx_destroy_fw_ddb_session(ha);
7238         qla4_8xxx_free_sysfs_attr(ha);
7239
7240         qla4xxx_sysfs_ddb_remove(ha);
7241         scsi_remove_host(ha->host);
7242
7243         qla4xxx_free_adapter(ha);
7244
7245         scsi_host_put(ha->host);
7246
7247         pci_disable_pcie_error_reporting(pdev);
7248         pci_disable_device(pdev);
7249         pci_set_drvdata(pdev, NULL);
7250 }
7251
7252 /**
7253  * qla4xxx_config_dma_addressing() - Configure OS DMA addressing method.
7254  * @ha: HA context
7255  *
7256  * At exit, the @ha's flags.enable_64bit_addressing set to indicated
7257  * supported addressing method.
7258  */
7259 static void qla4xxx_config_dma_addressing(struct scsi_qla_host *ha)
7260 {
7261         int retval;
7262
7263         /* Update our PCI device dma_mask for full 64 bit mask */
7264         if (pci_set_dma_mask(ha->pdev, DMA_BIT_MASK(64)) == 0) {
7265                 if (pci_set_consistent_dma_mask(ha->pdev, DMA_BIT_MASK(64))) {
7266                         dev_dbg(&ha->pdev->dev,
7267                                   "Failed to set 64 bit PCI consistent mask; "
7268                                    "using 32 bit.\n");
7269                         retval = pci_set_consistent_dma_mask(ha->pdev,
7270                                                              DMA_BIT_MASK(32));
7271                 }
7272         } else
7273                 retval = pci_set_dma_mask(ha->pdev, DMA_BIT_MASK(32));
7274 }
7275
7276 static int qla4xxx_slave_alloc(struct scsi_device *sdev)
7277 {
7278         struct iscsi_cls_session *cls_sess;
7279         struct iscsi_session *sess;
7280         struct ddb_entry *ddb;
7281         int queue_depth = QL4_DEF_QDEPTH;
7282
7283         cls_sess = starget_to_session(sdev->sdev_target);
7284         sess = cls_sess->dd_data;
7285         ddb = sess->dd_data;
7286
7287         sdev->hostdata = ddb;
7288         sdev->tagged_supported = 1;
7289
7290         if (ql4xmaxqdepth != 0 && ql4xmaxqdepth <= 0xffffU)
7291                 queue_depth = ql4xmaxqdepth;
7292
7293         scsi_activate_tcq(sdev, queue_depth);
7294         return 0;
7295 }
7296
7297 static int qla4xxx_slave_configure(struct scsi_device *sdev)
7298 {
7299         sdev->tagged_supported = 1;
7300         return 0;
7301 }
7302
7303 static void qla4xxx_slave_destroy(struct scsi_device *sdev)
7304 {
7305         scsi_deactivate_tcq(sdev, 1);
7306 }
7307
7308 static int qla4xxx_change_queue_depth(struct scsi_device *sdev, int qdepth,
7309                                       int reason)
7310 {
7311         if (!ql4xqfulltracking)
7312                 return -EOPNOTSUPP;
7313
7314         return iscsi_change_queue_depth(sdev, qdepth, reason);
7315 }
7316
7317 /**
7318  * qla4xxx_del_from_active_array - returns an active srb
7319  * @ha: Pointer to host adapter structure.
7320  * @index: index into the active_array
7321  *
7322  * This routine removes and returns the srb at the specified index
7323  **/
7324 struct srb *qla4xxx_del_from_active_array(struct scsi_qla_host *ha,
7325     uint32_t index)
7326 {
7327         struct srb *srb = NULL;
7328         struct scsi_cmnd *cmd = NULL;
7329
7330         cmd = scsi_host_find_tag(ha->host, index);
7331         if (!cmd)
7332                 return srb;
7333
7334         srb = (struct srb *)CMD_SP(cmd);
7335         if (!srb)
7336                 return srb;
7337
7338         /* update counters */
7339         if (srb->flags & SRB_DMA_VALID) {
7340                 ha->iocb_cnt -= srb->iocb_cnt;
7341                 if (srb->cmd)
7342                         srb->cmd->host_scribble =
7343                                 (unsigned char *)(unsigned long) MAX_SRBS;
7344         }
7345         return srb;
7346 }
7347
7348 /**
7349  * qla4xxx_eh_wait_on_command - waits for command to be returned by firmware
7350  * @ha: Pointer to host adapter structure.
7351  * @cmd: Scsi Command to wait on.
7352  *
7353  * This routine waits for the command to be returned by the Firmware
7354  * for some max time.
7355  **/
7356 static int qla4xxx_eh_wait_on_command(struct scsi_qla_host *ha,
7357                                       struct scsi_cmnd *cmd)
7358 {
7359         int done = 0;
7360         struct srb *rp;
7361         uint32_t max_wait_time = EH_WAIT_CMD_TOV;
7362         int ret = SUCCESS;
7363
7364         /* Dont wait on command if PCI error is being handled
7365          * by PCI AER driver
7366          */
7367         if (unlikely(pci_channel_offline(ha->pdev)) ||
7368             (test_bit(AF_EEH_BUSY, &ha->flags))) {
7369                 ql4_printk(KERN_WARNING, ha, "scsi%ld: Return from %s\n",
7370                     ha->host_no, __func__);
7371                 return ret;
7372         }
7373
7374         do {
7375                 /* Checking to see if its returned to OS */
7376                 rp = (struct srb *) CMD_SP(cmd);
7377                 if (rp == NULL) {
7378                         done++;
7379                         break;
7380                 }
7381
7382                 msleep(2000);
7383         } while (max_wait_time--);
7384
7385         return done;
7386 }
7387
7388 /**
7389  * qla4xxx_wait_for_hba_online - waits for HBA to come online
7390  * @ha: Pointer to host adapter structure
7391  **/
7392 static int qla4xxx_wait_for_hba_online(struct scsi_qla_host *ha)
7393 {
7394         unsigned long wait_online;
7395
7396         wait_online = jiffies + (HBA_ONLINE_TOV * HZ);
7397         while (time_before(jiffies, wait_online)) {
7398
7399                 if (adapter_up(ha))
7400                         return QLA_SUCCESS;
7401
7402                 msleep(2000);
7403         }
7404
7405         return QLA_ERROR;
7406 }
7407
7408 /**
7409  * qla4xxx_eh_wait_for_commands - wait for active cmds to finish.
7410  * @ha: pointer to HBA
7411  * @t: target id
7412  * @l: lun id
7413  *
7414  * This function waits for all outstanding commands to a lun to complete. It
7415  * returns 0 if all pending commands are returned and 1 otherwise.
7416  **/
7417 static int qla4xxx_eh_wait_for_commands(struct scsi_qla_host *ha,
7418                                         struct scsi_target *stgt,
7419                                         struct scsi_device *sdev)
7420 {
7421         int cnt;
7422         int status = 0;
7423         struct scsi_cmnd *cmd;
7424
7425         /*
7426          * Waiting for all commands for the designated target or dev
7427          * in the active array
7428          */
7429         for (cnt = 0; cnt < ha->host->can_queue; cnt++) {
7430                 cmd = scsi_host_find_tag(ha->host, cnt);
7431                 if (cmd && stgt == scsi_target(cmd->device) &&
7432                     (!sdev || sdev == cmd->device)) {
7433                         if (!qla4xxx_eh_wait_on_command(ha, cmd)) {
7434                                 status++;
7435                                 break;
7436                         }
7437                 }
7438         }
7439         return status;
7440 }
7441
7442 /**
7443  * qla4xxx_eh_abort - callback for abort task.
7444  * @cmd: Pointer to Linux's SCSI command structure
7445  *
7446  * This routine is called by the Linux OS to abort the specified
7447  * command.
7448  **/
7449 static int qla4xxx_eh_abort(struct scsi_cmnd *cmd)
7450 {
7451         struct scsi_qla_host *ha = to_qla_host(cmd->device->host);
7452         unsigned int id = cmd->device->id;
7453         unsigned int lun = cmd->device->lun;
7454         unsigned long flags;
7455         struct srb *srb = NULL;
7456         int ret = SUCCESS;
7457         int wait = 0;
7458
7459         ql4_printk(KERN_INFO, ha,
7460             "scsi%ld:%d:%d: Abort command issued cmd=%p\n",
7461             ha->host_no, id, lun, cmd);
7462
7463         spin_lock_irqsave(&ha->hardware_lock, flags);
7464         srb = (struct srb *) CMD_SP(cmd);
7465         if (!srb) {
7466                 spin_unlock_irqrestore(&ha->hardware_lock, flags);
7467                 return SUCCESS;
7468         }
7469         kref_get(&srb->srb_ref);
7470         spin_unlock_irqrestore(&ha->hardware_lock, flags);
7471
7472         if (qla4xxx_abort_task(ha, srb) != QLA_SUCCESS) {
7473                 DEBUG3(printk("scsi%ld:%d:%d: Abort_task mbx failed.\n",
7474                     ha->host_no, id, lun));
7475                 ret = FAILED;
7476         } else {
7477                 DEBUG3(printk("scsi%ld:%d:%d: Abort_task mbx success.\n",
7478                     ha->host_no, id, lun));
7479                 wait = 1;
7480         }
7481
7482         kref_put(&srb->srb_ref, qla4xxx_srb_compl);
7483
7484         /* Wait for command to complete */
7485         if (wait) {
7486                 if (!qla4xxx_eh_wait_on_command(ha, cmd)) {
7487                         DEBUG2(printk("scsi%ld:%d:%d: Abort handler timed out\n",
7488                             ha->host_no, id, lun));
7489                         ret = FAILED;
7490                 }
7491         }
7492
7493         ql4_printk(KERN_INFO, ha,
7494             "scsi%ld:%d:%d: Abort command - %s\n",
7495             ha->host_no, id, lun, (ret == SUCCESS) ? "succeeded" : "failed");
7496
7497         return ret;
7498 }
7499
7500 /**
7501  * qla4xxx_eh_device_reset - callback for target reset.
7502  * @cmd: Pointer to Linux's SCSI command structure
7503  *
7504  * This routine is called by the Linux OS to reset all luns on the
7505  * specified target.
7506  **/
7507 static int qla4xxx_eh_device_reset(struct scsi_cmnd *cmd)
7508 {
7509         struct scsi_qla_host *ha = to_qla_host(cmd->device->host);
7510         struct ddb_entry *ddb_entry = cmd->device->hostdata;
7511         int ret = FAILED, stat;
7512
7513         if (!ddb_entry)
7514                 return ret;
7515
7516         ret = iscsi_block_scsi_eh(cmd);
7517         if (ret)
7518                 return ret;
7519         ret = FAILED;
7520
7521         ql4_printk(KERN_INFO, ha,
7522                    "scsi%ld:%d:%d:%d: DEVICE RESET ISSUED.\n", ha->host_no,
7523                    cmd->device->channel, cmd->device->id, cmd->device->lun);
7524
7525         DEBUG2(printk(KERN_INFO
7526                       "scsi%ld: DEVICE_RESET cmd=%p jiffies = 0x%lx, to=%x,"
7527                       "dpc_flags=%lx, status=%x allowed=%d\n", ha->host_no,
7528                       cmd, jiffies, cmd->request->timeout / HZ,
7529                       ha->dpc_flags, cmd->result, cmd->allowed));
7530
7531         /* FIXME: wait for hba to go online */
7532         stat = qla4xxx_reset_lun(ha, ddb_entry, cmd->device->lun);
7533         if (stat != QLA_SUCCESS) {
7534                 ql4_printk(KERN_INFO, ha, "DEVICE RESET FAILED. %d\n", stat);
7535                 goto eh_dev_reset_done;
7536         }
7537
7538         if (qla4xxx_eh_wait_for_commands(ha, scsi_target(cmd->device),
7539                                          cmd->device)) {
7540                 ql4_printk(KERN_INFO, ha,
7541                            "DEVICE RESET FAILED - waiting for "
7542                            "commands.\n");
7543                 goto eh_dev_reset_done;
7544         }
7545
7546         /* Send marker. */
7547         if (qla4xxx_send_marker_iocb(ha, ddb_entry, cmd->device->lun,
7548                 MM_LUN_RESET) != QLA_SUCCESS)
7549                 goto eh_dev_reset_done;
7550
7551         ql4_printk(KERN_INFO, ha,
7552                    "scsi(%ld:%d:%d:%d): DEVICE RESET SUCCEEDED.\n",
7553                    ha->host_no, cmd->device->channel, cmd->device->id,
7554                    cmd->device->lun);
7555
7556         ret = SUCCESS;
7557
7558 eh_dev_reset_done:
7559
7560         return ret;
7561 }
7562
7563 /**
7564  * qla4xxx_eh_target_reset - callback for target reset.
7565  * @cmd: Pointer to Linux's SCSI command structure
7566  *
7567  * This routine is called by the Linux OS to reset the target.
7568  **/
7569 static int qla4xxx_eh_target_reset(struct scsi_cmnd *cmd)
7570 {
7571         struct scsi_qla_host *ha = to_qla_host(cmd->device->host);
7572         struct ddb_entry *ddb_entry = cmd->device->hostdata;
7573         int stat, ret;
7574
7575         if (!ddb_entry)
7576                 return FAILED;
7577
7578         ret = iscsi_block_scsi_eh(cmd);
7579         if (ret)
7580                 return ret;
7581
7582         starget_printk(KERN_INFO, scsi_target(cmd->device),
7583                        "WARM TARGET RESET ISSUED.\n");
7584
7585         DEBUG2(printk(KERN_INFO
7586                       "scsi%ld: TARGET_DEVICE_RESET cmd=%p jiffies = 0x%lx, "
7587                       "to=%x,dpc_flags=%lx, status=%x allowed=%d\n",
7588                       ha->host_no, cmd, jiffies, cmd->request->timeout / HZ,
7589                       ha->dpc_flags, cmd->result, cmd->allowed));
7590
7591         stat = qla4xxx_reset_target(ha, ddb_entry);
7592         if (stat != QLA_SUCCESS) {
7593                 starget_printk(KERN_INFO, scsi_target(cmd->device),
7594                                "WARM TARGET RESET FAILED.\n");
7595                 return FAILED;
7596         }
7597
7598         if (qla4xxx_eh_wait_for_commands(ha, scsi_target(cmd->device),
7599                                          NULL)) {
7600                 starget_printk(KERN_INFO, scsi_target(cmd->device),
7601                                "WARM TARGET DEVICE RESET FAILED - "
7602                                "waiting for commands.\n");
7603                 return FAILED;
7604         }
7605
7606         /* Send marker. */
7607         if (qla4xxx_send_marker_iocb(ha, ddb_entry, cmd->device->lun,
7608                 MM_TGT_WARM_RESET) != QLA_SUCCESS) {
7609                 starget_printk(KERN_INFO, scsi_target(cmd->device),
7610                                "WARM TARGET DEVICE RESET FAILED - "
7611                                "marker iocb failed.\n");
7612                 return FAILED;
7613         }
7614
7615         starget_printk(KERN_INFO, scsi_target(cmd->device),
7616                        "WARM TARGET RESET SUCCEEDED.\n");
7617         return SUCCESS;
7618 }
7619
7620 /**
7621  * qla4xxx_is_eh_active - check if error handler is running
7622  * @shost: Pointer to SCSI Host struct
7623  *
7624  * This routine finds that if reset host is called in EH
7625  * scenario or from some application like sg_reset
7626  **/
7627 static int qla4xxx_is_eh_active(struct Scsi_Host *shost)
7628 {
7629         if (shost->shost_state == SHOST_RECOVERY)
7630                 return 1;
7631         return 0;
7632 }
7633
7634 /**
7635  * qla4xxx_eh_host_reset - kernel callback
7636  * @cmd: Pointer to Linux's SCSI command structure
7637  *
7638  * This routine is invoked by the Linux kernel to perform fatal error
7639  * recovery on the specified adapter.
7640  **/
7641 static int qla4xxx_eh_host_reset(struct scsi_cmnd *cmd)
7642 {
7643         int return_status = FAILED;
7644         struct scsi_qla_host *ha;
7645
7646         ha = to_qla_host(cmd->device->host);
7647
7648         if (is_qla8032(ha) && ql4xdontresethba)
7649                 qla4_83xx_set_idc_dontreset(ha);
7650
7651         /*
7652          * For ISP8324, if IDC_CTRL DONTRESET_BIT0 is set by other
7653          * protocol drivers, we should not set device_state to
7654          * NEED_RESET
7655          */
7656         if (ql4xdontresethba ||
7657             (is_qla8032(ha) && qla4_83xx_idc_dontreset(ha))) {
7658                 DEBUG2(printk("scsi%ld: %s: Don't Reset HBA\n",
7659                      ha->host_no, __func__));
7660
7661                 /* Clear outstanding srb in queues */
7662                 if (qla4xxx_is_eh_active(cmd->device->host))
7663                         qla4xxx_abort_active_cmds(ha, DID_ABORT << 16);
7664
7665                 return FAILED;
7666         }
7667
7668         ql4_printk(KERN_INFO, ha,
7669                    "scsi(%ld:%d:%d:%d): HOST RESET ISSUED.\n", ha->host_no,
7670                    cmd->device->channel, cmd->device->id, cmd->device->lun);
7671
7672         if (qla4xxx_wait_for_hba_online(ha) != QLA_SUCCESS) {
7673                 DEBUG2(printk("scsi%ld:%d: %s: Unable to reset host.  Adapter "
7674                               "DEAD.\n", ha->host_no, cmd->device->channel,
7675                               __func__));
7676
7677                 return FAILED;
7678         }
7679
7680         if (!test_bit(DPC_RESET_HA, &ha->dpc_flags)) {
7681                 if (is_qla80XX(ha))
7682                         set_bit(DPC_RESET_HA_FW_CONTEXT, &ha->dpc_flags);
7683                 else
7684                         set_bit(DPC_RESET_HA, &ha->dpc_flags);
7685         }
7686
7687         if (qla4xxx_recover_adapter(ha) == QLA_SUCCESS)
7688                 return_status = SUCCESS;
7689
7690         ql4_printk(KERN_INFO, ha, "HOST RESET %s.\n",
7691                    return_status == FAILED ? "FAILED" : "SUCCEEDED");
7692
7693         return return_status;
7694 }
7695
7696 static int qla4xxx_context_reset(struct scsi_qla_host *ha)
7697 {
7698         uint32_t mbox_cmd[MBOX_REG_COUNT];
7699         uint32_t mbox_sts[MBOX_REG_COUNT];
7700         struct addr_ctrl_blk_def *acb = NULL;
7701         uint32_t acb_len = sizeof(struct addr_ctrl_blk_def);
7702         int rval = QLA_SUCCESS;
7703         dma_addr_t acb_dma;
7704
7705         acb = dma_alloc_coherent(&ha->pdev->dev,
7706                                  sizeof(struct addr_ctrl_blk_def),
7707                                  &acb_dma, GFP_KERNEL);
7708         if (!acb) {
7709                 ql4_printk(KERN_ERR, ha, "%s: Unable to alloc acb\n",
7710                            __func__);
7711                 rval = -ENOMEM;
7712                 goto exit_port_reset;
7713         }
7714
7715         memset(acb, 0, acb_len);
7716
7717         rval = qla4xxx_get_acb(ha, acb_dma, PRIMARI_ACB, acb_len);
7718         if (rval != QLA_SUCCESS) {
7719                 rval = -EIO;
7720                 goto exit_free_acb;
7721         }
7722
7723         rval = qla4xxx_disable_acb(ha);
7724         if (rval != QLA_SUCCESS) {
7725                 rval = -EIO;
7726                 goto exit_free_acb;
7727         }
7728
7729         wait_for_completion_timeout(&ha->disable_acb_comp,
7730                                     DISABLE_ACB_TOV * HZ);
7731
7732         rval = qla4xxx_set_acb(ha, &mbox_cmd[0], &mbox_sts[0], acb_dma);
7733         if (rval != QLA_SUCCESS) {
7734                 rval = -EIO;
7735                 goto exit_free_acb;
7736         }
7737
7738 exit_free_acb:
7739         dma_free_coherent(&ha->pdev->dev, sizeof(struct addr_ctrl_blk_def),
7740                           acb, acb_dma);
7741 exit_port_reset:
7742         DEBUG2(ql4_printk(KERN_INFO, ha, "%s %s\n", __func__,
7743                           rval == QLA_SUCCESS ? "SUCCEEDED" : "FAILED"));
7744         return rval;
7745 }
7746
7747 static int qla4xxx_host_reset(struct Scsi_Host *shost, int reset_type)
7748 {
7749         struct scsi_qla_host *ha = to_qla_host(shost);
7750         int rval = QLA_SUCCESS;
7751         uint32_t idc_ctrl;
7752
7753         if (ql4xdontresethba) {
7754                 DEBUG2(ql4_printk(KERN_INFO, ha, "%s: Don't Reset HBA\n",
7755                                   __func__));
7756                 rval = -EPERM;
7757                 goto exit_host_reset;
7758         }
7759
7760         if (test_bit(DPC_RESET_HA, &ha->dpc_flags))
7761                 goto recover_adapter;
7762
7763         switch (reset_type) {
7764         case SCSI_ADAPTER_RESET:
7765                 set_bit(DPC_RESET_HA, &ha->dpc_flags);
7766                 break;
7767         case SCSI_FIRMWARE_RESET:
7768                 if (!test_bit(DPC_RESET_HA, &ha->dpc_flags)) {
7769                         if (is_qla80XX(ha))
7770                                 /* set firmware context reset */
7771                                 set_bit(DPC_RESET_HA_FW_CONTEXT,
7772                                         &ha->dpc_flags);
7773                         else {
7774                                 rval = qla4xxx_context_reset(ha);
7775                                 goto exit_host_reset;
7776                         }
7777                 }
7778                 break;
7779         }
7780
7781 recover_adapter:
7782         /* For ISP83XX set graceful reset bit in IDC_DRV_CTRL if
7783          * reset is issued by application */
7784         if (is_qla8032(ha) && test_bit(DPC_RESET_HA, &ha->dpc_flags)) {
7785                 idc_ctrl = qla4_83xx_rd_reg(ha, QLA83XX_IDC_DRV_CTRL);
7786                 qla4_83xx_wr_reg(ha, QLA83XX_IDC_DRV_CTRL,
7787                                  (idc_ctrl | GRACEFUL_RESET_BIT1));
7788         }
7789
7790         rval = qla4xxx_recover_adapter(ha);
7791         if (rval != QLA_SUCCESS) {
7792                 DEBUG2(ql4_printk(KERN_INFO, ha, "%s: recover adapter fail\n",
7793                                   __func__));
7794                 rval = -EIO;
7795         }
7796
7797 exit_host_reset:
7798         return rval;
7799 }
7800
7801 /* PCI AER driver recovers from all correctable errors w/o
7802  * driver intervention. For uncorrectable errors PCI AER
7803  * driver calls the following device driver's callbacks
7804  *
7805  * - Fatal Errors - link_reset
7806  * - Non-Fatal Errors - driver's pci_error_detected() which
7807  * returns CAN_RECOVER, NEED_RESET or DISCONNECT.
7808  *
7809  * PCI AER driver calls
7810  * CAN_RECOVER - driver's pci_mmio_enabled(), mmio_enabled
7811  *               returns RECOVERED or NEED_RESET if fw_hung
7812  * NEED_RESET - driver's slot_reset()
7813  * DISCONNECT - device is dead & cannot recover
7814  * RECOVERED - driver's pci_resume()
7815  */
7816 static pci_ers_result_t
7817 qla4xxx_pci_error_detected(struct pci_dev *pdev, pci_channel_state_t state)
7818 {
7819         struct scsi_qla_host *ha = pci_get_drvdata(pdev);
7820
7821         ql4_printk(KERN_WARNING, ha, "scsi%ld: %s: error detected:state %x\n",
7822             ha->host_no, __func__, state);
7823
7824         if (!is_aer_supported(ha))
7825                 return PCI_ERS_RESULT_NONE;
7826
7827         switch (state) {
7828         case pci_channel_io_normal:
7829                 clear_bit(AF_EEH_BUSY, &ha->flags);
7830                 return PCI_ERS_RESULT_CAN_RECOVER;
7831         case pci_channel_io_frozen:
7832                 set_bit(AF_EEH_BUSY, &ha->flags);
7833                 qla4xxx_mailbox_premature_completion(ha);
7834                 qla4xxx_free_irqs(ha);
7835                 pci_disable_device(pdev);
7836                 /* Return back all IOs */
7837                 qla4xxx_abort_active_cmds(ha, DID_RESET << 16);
7838                 return PCI_ERS_RESULT_NEED_RESET;
7839         case pci_channel_io_perm_failure:
7840                 set_bit(AF_EEH_BUSY, &ha->flags);
7841                 set_bit(AF_PCI_CHANNEL_IO_PERM_FAILURE, &ha->flags);
7842                 qla4xxx_abort_active_cmds(ha, DID_NO_CONNECT << 16);
7843                 return PCI_ERS_RESULT_DISCONNECT;
7844         }
7845         return PCI_ERS_RESULT_NEED_RESET;
7846 }
7847
7848 /**
7849  * qla4xxx_pci_mmio_enabled() gets called if
7850  * qla4xxx_pci_error_detected() returns PCI_ERS_RESULT_CAN_RECOVER
7851  * and read/write to the device still works.
7852  **/
7853 static pci_ers_result_t
7854 qla4xxx_pci_mmio_enabled(struct pci_dev *pdev)
7855 {
7856         struct scsi_qla_host *ha = pci_get_drvdata(pdev);
7857
7858         if (!is_aer_supported(ha))
7859                 return PCI_ERS_RESULT_NONE;
7860
7861         return PCI_ERS_RESULT_RECOVERED;
7862 }
7863
7864 static uint32_t qla4_8xxx_error_recovery(struct scsi_qla_host *ha)
7865 {
7866         uint32_t rval = QLA_ERROR;
7867         int fn;
7868         struct pci_dev *other_pdev = NULL;
7869
7870         ql4_printk(KERN_WARNING, ha, "scsi%ld: In %s\n", ha->host_no, __func__);
7871
7872         set_bit(DPC_RESET_ACTIVE, &ha->dpc_flags);
7873
7874         if (test_bit(AF_ONLINE, &ha->flags)) {
7875                 clear_bit(AF_ONLINE, &ha->flags);
7876                 clear_bit(AF_LINK_UP, &ha->flags);
7877                 iscsi_host_for_each_session(ha->host, qla4xxx_fail_session);
7878                 qla4xxx_process_aen(ha, FLUSH_DDB_CHANGED_AENS);
7879         }
7880
7881         fn = PCI_FUNC(ha->pdev->devfn);
7882         while (fn > 0) {
7883                 fn--;
7884                 ql4_printk(KERN_INFO, ha, "scsi%ld: %s: Finding PCI device at "
7885                     "func %x\n", ha->host_no, __func__, fn);
7886                 /* Get the pci device given the domain, bus,
7887                  * slot/function number */
7888                 other_pdev =
7889                     pci_get_domain_bus_and_slot(pci_domain_nr(ha->pdev->bus),
7890                     ha->pdev->bus->number, PCI_DEVFN(PCI_SLOT(ha->pdev->devfn),
7891                     fn));
7892
7893                 if (!other_pdev)
7894                         continue;
7895
7896                 if (atomic_read(&other_pdev->enable_cnt)) {
7897                         ql4_printk(KERN_INFO, ha, "scsi%ld: %s: Found PCI "
7898                             "func in enabled state%x\n", ha->host_no,
7899                             __func__, fn);
7900                         pci_dev_put(other_pdev);
7901                         break;
7902                 }
7903                 pci_dev_put(other_pdev);
7904         }
7905
7906         /* The first function on the card, the reset owner will
7907          * start & initialize the firmware. The other functions
7908          * on the card will reset the firmware context
7909          */
7910         if (!fn) {
7911                 ql4_printk(KERN_INFO, ha, "scsi%ld: %s: devfn being reset "
7912                     "0x%x is the owner\n", ha->host_no, __func__,
7913                     ha->pdev->devfn);
7914
7915                 ha->isp_ops->idc_lock(ha);
7916                 qla4_8xxx_wr_direct(ha, QLA8XXX_CRB_DEV_STATE,
7917                                     QLA8XXX_DEV_COLD);
7918                 ha->isp_ops->idc_unlock(ha);
7919
7920                 rval = qla4_8xxx_update_idc_reg(ha);
7921                 if (rval == QLA_ERROR) {
7922                         ql4_printk(KERN_INFO, ha, "scsi%ld: %s: HW State: FAILED\n",
7923                                    ha->host_no, __func__);
7924                         ha->isp_ops->idc_lock(ha);
7925                         qla4_8xxx_wr_direct(ha, QLA8XXX_CRB_DEV_STATE,
7926                                             QLA8XXX_DEV_FAILED);
7927                         ha->isp_ops->idc_unlock(ha);
7928                         goto exit_error_recovery;
7929                 }
7930
7931                 clear_bit(AF_FW_RECOVERY, &ha->flags);
7932                 rval = qla4xxx_initialize_adapter(ha, RESET_ADAPTER);
7933
7934                 if (rval != QLA_SUCCESS) {
7935                         ql4_printk(KERN_INFO, ha, "scsi%ld: %s: HW State: "
7936                             "FAILED\n", ha->host_no, __func__);
7937                         ha->isp_ops->idc_lock(ha);
7938                         qla4_8xxx_clear_drv_active(ha);
7939                         qla4_8xxx_wr_direct(ha, QLA8XXX_CRB_DEV_STATE,
7940                                             QLA8XXX_DEV_FAILED);
7941                         ha->isp_ops->idc_unlock(ha);
7942                 } else {
7943                         ql4_printk(KERN_INFO, ha, "scsi%ld: %s: HW State: "
7944                             "READY\n", ha->host_no, __func__);
7945                         ha->isp_ops->idc_lock(ha);
7946                         qla4_8xxx_wr_direct(ha, QLA8XXX_CRB_DEV_STATE,
7947                                             QLA8XXX_DEV_READY);
7948                         /* Clear driver state register */
7949                         qla4_8xxx_wr_direct(ha, QLA8XXX_CRB_DRV_STATE, 0);
7950                         qla4_8xxx_set_drv_active(ha);
7951                         ha->isp_ops->idc_unlock(ha);
7952                         ha->isp_ops->enable_intrs(ha);
7953                 }
7954         } else {
7955                 ql4_printk(KERN_INFO, ha, "scsi%ld: %s: devfn 0x%x is not "
7956                     "the reset owner\n", ha->host_no, __func__,
7957                     ha->pdev->devfn);
7958                 if ((qla4_8xxx_rd_direct(ha, QLA8XXX_CRB_DEV_STATE) ==
7959                      QLA8XXX_DEV_READY)) {
7960                         clear_bit(AF_FW_RECOVERY, &ha->flags);
7961                         rval = qla4xxx_initialize_adapter(ha, RESET_ADAPTER);
7962                         if (rval == QLA_SUCCESS)
7963                                 ha->isp_ops->enable_intrs(ha);
7964
7965                         ha->isp_ops->idc_lock(ha);
7966                         qla4_8xxx_set_drv_active(ha);
7967                         ha->isp_ops->idc_unlock(ha);
7968                 }
7969         }
7970 exit_error_recovery:
7971         clear_bit(DPC_RESET_ACTIVE, &ha->dpc_flags);
7972         return rval;
7973 }
7974
7975 static pci_ers_result_t
7976 qla4xxx_pci_slot_reset(struct pci_dev *pdev)
7977 {
7978         pci_ers_result_t ret = PCI_ERS_RESULT_DISCONNECT;
7979         struct scsi_qla_host *ha = pci_get_drvdata(pdev);
7980         int rc;
7981
7982         ql4_printk(KERN_WARNING, ha, "scsi%ld: %s: slot_reset\n",
7983             ha->host_no, __func__);
7984
7985         if (!is_aer_supported(ha))
7986                 return PCI_ERS_RESULT_NONE;
7987
7988         /* Restore the saved state of PCIe device -
7989          * BAR registers, PCI Config space, PCIX, MSI,
7990          * IOV states
7991          */
7992         pci_restore_state(pdev);
7993
7994         /* pci_restore_state() clears the saved_state flag of the device
7995          * save restored state which resets saved_state flag
7996          */
7997         pci_save_state(pdev);
7998
7999         /* Initialize device or resume if in suspended state */
8000         rc = pci_enable_device(pdev);
8001         if (rc) {
8002                 ql4_printk(KERN_WARNING, ha, "scsi%ld: %s: Can't re-enable "
8003                     "device after reset\n", ha->host_no, __func__);
8004                 goto exit_slot_reset;
8005         }
8006
8007         ha->isp_ops->disable_intrs(ha);
8008
8009         if (is_qla80XX(ha)) {
8010                 if (qla4_8xxx_error_recovery(ha) == QLA_SUCCESS) {
8011                         ret = PCI_ERS_RESULT_RECOVERED;
8012                         goto exit_slot_reset;
8013                 } else
8014                         goto exit_slot_reset;
8015         }
8016
8017 exit_slot_reset:
8018         ql4_printk(KERN_WARNING, ha, "scsi%ld: %s: Return=%x\n"
8019             "device after reset\n", ha->host_no, __func__, ret);
8020         return ret;
8021 }
8022
8023 static void
8024 qla4xxx_pci_resume(struct pci_dev *pdev)
8025 {
8026         struct scsi_qla_host *ha = pci_get_drvdata(pdev);
8027         int ret;
8028
8029         ql4_printk(KERN_WARNING, ha, "scsi%ld: %s: pci_resume\n",
8030             ha->host_no, __func__);
8031
8032         ret = qla4xxx_wait_for_hba_online(ha);
8033         if (ret != QLA_SUCCESS) {
8034                 ql4_printk(KERN_ERR, ha, "scsi%ld: %s: the device failed to "
8035                     "resume I/O from slot/link_reset\n", ha->host_no,
8036                      __func__);
8037         }
8038
8039         pci_cleanup_aer_uncorrect_error_status(pdev);
8040         clear_bit(AF_EEH_BUSY, &ha->flags);
8041 }
8042
8043 static const struct pci_error_handlers qla4xxx_err_handler = {
8044         .error_detected = qla4xxx_pci_error_detected,
8045         .mmio_enabled = qla4xxx_pci_mmio_enabled,
8046         .slot_reset = qla4xxx_pci_slot_reset,
8047         .resume = qla4xxx_pci_resume,
8048 };
8049
8050 static struct pci_device_id qla4xxx_pci_tbl[] = {
8051         {
8052                 .vendor         = PCI_VENDOR_ID_QLOGIC,
8053                 .device         = PCI_DEVICE_ID_QLOGIC_ISP4010,
8054                 .subvendor      = PCI_ANY_ID,
8055                 .subdevice      = PCI_ANY_ID,
8056         },
8057         {
8058                 .vendor         = PCI_VENDOR_ID_QLOGIC,
8059                 .device         = PCI_DEVICE_ID_QLOGIC_ISP4022,
8060                 .subvendor      = PCI_ANY_ID,
8061                 .subdevice      = PCI_ANY_ID,
8062         },
8063         {
8064                 .vendor         = PCI_VENDOR_ID_QLOGIC,
8065                 .device         = PCI_DEVICE_ID_QLOGIC_ISP4032,
8066                 .subvendor      = PCI_ANY_ID,
8067                 .subdevice      = PCI_ANY_ID,
8068         },
8069         {
8070                 .vendor         = PCI_VENDOR_ID_QLOGIC,
8071                 .device         = PCI_DEVICE_ID_QLOGIC_ISP8022,
8072                 .subvendor      = PCI_ANY_ID,
8073                 .subdevice      = PCI_ANY_ID,
8074         },
8075         {
8076                 .vendor         = PCI_VENDOR_ID_QLOGIC,
8077                 .device         = PCI_DEVICE_ID_QLOGIC_ISP8324,
8078                 .subvendor      = PCI_ANY_ID,
8079                 .subdevice      = PCI_ANY_ID,
8080         },
8081         {0, 0},
8082 };
8083 MODULE_DEVICE_TABLE(pci, qla4xxx_pci_tbl);
8084
8085 static struct pci_driver qla4xxx_pci_driver = {
8086         .name           = DRIVER_NAME,
8087         .id_table       = qla4xxx_pci_tbl,
8088         .probe          = qla4xxx_probe_adapter,
8089         .remove         = qla4xxx_remove_adapter,
8090         .err_handler = &qla4xxx_err_handler,
8091 };
8092
8093 static int __init qla4xxx_module_init(void)
8094 {
8095         int ret;
8096
8097         /* Allocate cache for SRBs. */
8098         srb_cachep = kmem_cache_create("qla4xxx_srbs", sizeof(struct srb), 0,
8099                                        SLAB_HWCACHE_ALIGN, NULL);
8100         if (srb_cachep == NULL) {
8101                 printk(KERN_ERR
8102                        "%s: Unable to allocate SRB cache..."
8103                        "Failing load!\n", DRIVER_NAME);
8104                 ret = -ENOMEM;
8105                 goto no_srp_cache;
8106         }
8107
8108         /* Derive version string. */
8109         strcpy(qla4xxx_version_str, QLA4XXX_DRIVER_VERSION);
8110         if (ql4xextended_error_logging)
8111                 strcat(qla4xxx_version_str, "-debug");
8112
8113         qla4xxx_scsi_transport =
8114                 iscsi_register_transport(&qla4xxx_iscsi_transport);
8115         if (!qla4xxx_scsi_transport){
8116                 ret = -ENODEV;
8117                 goto release_srb_cache;
8118         }
8119
8120         ret = pci_register_driver(&qla4xxx_pci_driver);
8121         if (ret)
8122                 goto unregister_transport;
8123
8124         printk(KERN_INFO "QLogic iSCSI HBA Driver\n");
8125         return 0;
8126
8127 unregister_transport:
8128         iscsi_unregister_transport(&qla4xxx_iscsi_transport);
8129 release_srb_cache:
8130         kmem_cache_destroy(srb_cachep);
8131 no_srp_cache:
8132         return ret;
8133 }
8134
8135 static void __exit qla4xxx_module_exit(void)
8136 {
8137         pci_unregister_driver(&qla4xxx_pci_driver);
8138         iscsi_unregister_transport(&qla4xxx_iscsi_transport);
8139         kmem_cache_destroy(srb_cachep);
8140 }
8141
8142 module_init(qla4xxx_module_init);
8143 module_exit(qla4xxx_module_exit);
8144
8145 MODULE_AUTHOR("QLogic Corporation");
8146 MODULE_DESCRIPTION("QLogic iSCSI HBA Driver");
8147 MODULE_LICENSE("GPL");
8148 MODULE_VERSION(QLA4XXX_DRIVER_VERSION);