drivers/scsi/qla4xxx/ql4_os.c

   1 /*
   2  * QLogic iSCSI HBA Driver
   3  * Copyright (c)  2003-2013 QLogic Corporation
   4  *
   5  * See LICENSE.qla4xxx for copyright and licensing details.
   6  */
   7 #include <linux/moduleparam.h>
   8 #include <linux/slab.h>
   9 #include <linux/blkdev.h>
  10 #include <linux/iscsi_boot_sysfs.h>
  11 #include <linux/inet.h>
  12
  13 #include <scsi/scsi_tcq.h>
  14 #include <scsi/scsicam.h>
  15
  16 #include "ql4_def.h"
  17 #include "ql4_version.h"
  18 #include "ql4_glbl.h"
  19 #include "ql4_dbg.h"
  20 #include "ql4_inline.h"
  21 #include "ql4_83xx.h"
  22
  23 /*
  24  * Driver version
  25  */
  26 static char qla4xxx_version_str[40];
  27
  28 /*
  29  * SRB allocation cache
  30  */
  31 static struct kmem_cache *srb_cachep;
  32
  33 /*
  34  * Module parameter information and variables
  35  */
  36 static int ql4xdisablesysfsboot = 1;
  37 module_param(ql4xdisablesysfsboot, int, S_IRUGO | S_IWUSR);
  38 MODULE_PARM_DESC(ql4xdisablesysfsboot,
  39                  " Set to disable exporting boot targets to sysfs.\n"
  40                  "\t\t  0 - Export boot targets\n"
  41                  "\t\t  1 - Do not export boot targets (Default)");
  42
  43 int ql4xdontresethba;
  44 module_param(ql4xdontresethba, int, S_IRUGO | S_IWUSR);
  45 MODULE_PARM_DESC(ql4xdontresethba,
  46                  " Don't reset the HBA for driver recovery.\n"
  47                  "\t\t  0 - It will reset HBA (Default)\n"
  48                  "\t\t  1 - It will NOT reset HBA");
  49
  50 int ql4xextended_error_logging;
  51 module_param(ql4xextended_error_logging, int, S_IRUGO | S_IWUSR);
  52 MODULE_PARM_DESC(ql4xextended_error_logging,
  53                  " Option to enable extended error logging.\n"
  54                  "\t\t  0 - no logging (Default)\n"
  55                  "\t\t  2 - debug logging");
  56
  57 int ql4xenablemsix = 1;
  58 module_param(ql4xenablemsix, int, S_IRUGO|S_IWUSR);
  59 MODULE_PARM_DESC(ql4xenablemsix,
  60                  " Set to enable MSI or MSI-X interrupt mechanism.\n"
  61                  "\t\t  0 = enable INTx interrupt mechanism.\n"
  62                  "\t\t  1 = enable MSI-X interrupt mechanism (Default).\n"
  63                  "\t\t  2 = enable MSI interrupt mechanism.");
  64
  65 #define QL4_DEF_QDEPTH 32
  66 static int ql4xmaxqdepth = QL4_DEF_QDEPTH;
  67 module_param(ql4xmaxqdepth, int, S_IRUGO | S_IWUSR);
  68 MODULE_PARM_DESC(ql4xmaxqdepth,
  69                  " Maximum queue depth to report for target devices.\n"
  70                  "\t\t  Default: 32.");
  71
  72 static int ql4xqfulltracking = 1;
  73 module_param(ql4xqfulltracking, int, S_IRUGO | S_IWUSR);
  74 MODULE_PARM_DESC(ql4xqfulltracking,
  75                  " Enable or disable dynamic tracking and adjustment of\n"
  76                  "\t\t scsi device queue depth.\n"
  77                  "\t\t  0 - Disable.\n"
  78                  "\t\t  1 - Enable. (Default)");
  79
  80 static int ql4xsess_recovery_tmo = QL4_SESS_RECOVERY_TMO;
  81 module_param(ql4xsess_recovery_tmo, int, S_IRUGO);
  82 MODULE_PARM_DESC(ql4xsess_recovery_tmo,
  83                 " Target Session Recovery Timeout.\n"
  84                 "\t\t  Default: 120 sec.");
  85
  86 int ql4xmdcapmask = 0;
  87 module_param(ql4xmdcapmask, int, S_IRUGO);
  88 MODULE_PARM_DESC(ql4xmdcapmask,
  89                  " Set the Minidump driver capture mask level.\n"
  90                  "\t\t  Default is 0 (firmware default capture mask)\n"
  91                  "\t\t  Can be set to 0x3, 0x7, 0xF, 0x1F, 0x3F, 0x7F, 0xFF");
  92
  93 int ql4xenablemd = 1;
  94 module_param(ql4xenablemd, int, S_IRUGO | S_IWUSR);
  95 MODULE_PARM_DESC(ql4xenablemd,
  96                  " Set to enable minidump.\n"
  97                  "\t\t  0 - disable minidump\n"
  98                  "\t\t  1 - enable minidump (Default)");
  99
 100 static int qla4xxx_wait_for_hba_online(struct scsi_qla_host *ha);
 101 /*
 102  * SCSI host template entry points
 103  */
 104 static void qla4xxx_config_dma_addressing(struct scsi_qla_host *ha);
 105
 106 /*
 107  * iSCSI template entry points
 108  */
 109 static int qla4xxx_session_get_param(struct iscsi_cls_session *cls_sess,
 110                                      enum iscsi_param param, char *buf);
 111 static int qla4xxx_conn_get_param(struct iscsi_cls_conn *conn,
 112                                   enum iscsi_param param, char *buf);
 113 static int qla4xxx_host_get_param(struct Scsi_Host *shost,
 114                                   enum iscsi_host_param param, char *buf);
 115 static int qla4xxx_iface_set_param(struct Scsi_Host *shost, void *data,
 116                                    uint32_t len);
 117 static int qla4xxx_get_iface_param(struct iscsi_iface *iface,
 118                                    enum iscsi_param_type param_type,
 119                                    int param, char *buf);
 120 static enum blk_eh_timer_return qla4xxx_eh_cmd_timed_out(struct scsi_cmnd *sc);
 121 static struct iscsi_endpoint *qla4xxx_ep_connect(struct Scsi_Host *shost,
 122                                                  struct sockaddr *dst_addr,
 123                                                  int non_blocking);
 124 static int qla4xxx_ep_poll(struct iscsi_endpoint *ep, int timeout_ms);
 125 static void qla4xxx_ep_disconnect(struct iscsi_endpoint *ep);
 126 static int qla4xxx_get_ep_param(struct iscsi_endpoint *ep,
 127                                 enum iscsi_param param, char *buf);
 128 static int qla4xxx_conn_start(struct iscsi_cls_conn *conn);
 129 static struct iscsi_cls_conn *
 130 qla4xxx_conn_create(struct iscsi_cls_session *cls_sess, uint32_t conn_idx);
 131 static int qla4xxx_conn_bind(struct iscsi_cls_session *cls_session,
 132                              struct iscsi_cls_conn *cls_conn,
 133                              uint64_t transport_fd, int is_leading);
 134 static void qla4xxx_conn_destroy(struct iscsi_cls_conn *conn);
 135 static struct iscsi_cls_session *
 136 qla4xxx_session_create(struct iscsi_endpoint *ep, uint16_t cmds_max,
 137                         uint16_t qdepth, uint32_t initial_cmdsn);
 138 static void qla4xxx_session_destroy(struct iscsi_cls_session *sess);
 139 static void qla4xxx_task_work(struct work_struct *wdata);
 140 static int qla4xxx_alloc_pdu(struct iscsi_task *, uint8_t);
 141 static int qla4xxx_task_xmit(struct iscsi_task *);
 142 static void qla4xxx_task_cleanup(struct iscsi_task *);
 143 static void qla4xxx_fail_session(struct iscsi_cls_session *cls_session);
 144 static void qla4xxx_conn_get_stats(struct iscsi_cls_conn *cls_conn,
 145                                    struct iscsi_stats *stats);
 146 static int qla4xxx_send_ping(struct Scsi_Host *shost, uint32_t iface_num,
 147                              uint32_t iface_type, uint32_t payload_size,
 148                              uint32_t pid, struct sockaddr *dst_addr);
 149 static int qla4xxx_get_chap_list(struct Scsi_Host *shost, uint16_t chap_tbl_idx,
 150                                  uint32_t *num_entries, char *buf);
 151 static int qla4xxx_delete_chap(struct Scsi_Host *shost, uint16_t chap_tbl_idx);
 152 static int qla4xxx_set_chap_entry(struct Scsi_Host *shost, void  *data,
 153                                   int len);
 154 static int qla4xxx_get_host_stats(struct Scsi_Host *shost, char *buf, int len);
 155
 156 /*
 157  * SCSI host template entry points
 158  */
 159 static int qla4xxx_queuecommand(struct Scsi_Host *h, struct scsi_cmnd *cmd);
 160 static int qla4xxx_eh_abort(struct scsi_cmnd *cmd);
 161 static int qla4xxx_eh_device_reset(struct scsi_cmnd *cmd);
 162 static int qla4xxx_eh_target_reset(struct scsi_cmnd *cmd);
 163 static int qla4xxx_eh_host_reset(struct scsi_cmnd *cmd);
 164 static int qla4xxx_slave_alloc(struct scsi_device *device);
 165 static umode_t qla4_attr_is_visible(int param_type, int param);
 166 static int qla4xxx_host_reset(struct Scsi_Host *shost, int reset_type);
 167
 168 /*
 169  * iSCSI Flash DDB sysfs entry points
 170  */
 171 static int
 172 qla4xxx_sysfs_ddb_set_param(struct iscsi_bus_flash_session *fnode_sess,
 173                             struct iscsi_bus_flash_conn *fnode_conn,
 174                             void *data, int len);
 175 static int
 176 qla4xxx_sysfs_ddb_get_param(struct iscsi_bus_flash_session *fnode_sess,
 177                             int param, char *buf);
 178 static int qla4xxx_sysfs_ddb_add(struct Scsi_Host *shost, const char *buf,
 179                                  int len);
 180 static int
 181 qla4xxx_sysfs_ddb_delete(struct iscsi_bus_flash_session *fnode_sess);
 182 static int qla4xxx_sysfs_ddb_login(struct iscsi_bus_flash_session *fnode_sess,
 183                                    struct iscsi_bus_flash_conn *fnode_conn);
 184 static int qla4xxx_sysfs_ddb_logout(struct iscsi_bus_flash_session *fnode_sess,
 185                                     struct iscsi_bus_flash_conn *fnode_conn);
 186 static int qla4xxx_sysfs_ddb_logout_sid(struct iscsi_cls_session *cls_sess);
 187
 188 static struct qla4_8xxx_legacy_intr_set legacy_intr[] =
 189     QLA82XX_LEGACY_INTR_CONFIG;
 190
 191 static struct scsi_host_template qla4xxx_driver_template = {
 192         .module                 = THIS_MODULE,
 193         .name                   = DRIVER_NAME,
 194         .proc_name              = DRIVER_NAME,
 195         .queuecommand           = qla4xxx_queuecommand,
 196
 197         .eh_abort_handler       = qla4xxx_eh_abort,
 198         .eh_device_reset_handler = qla4xxx_eh_device_reset,
 199         .eh_target_reset_handler = qla4xxx_eh_target_reset,
 200         .eh_host_reset_handler  = qla4xxx_eh_host_reset,
 201         .eh_timed_out           = qla4xxx_eh_cmd_timed_out,
 202
 203         .slave_alloc            = qla4xxx_slave_alloc,
 204         .change_queue_depth     = scsi_change_queue_depth,
 205
 206         .this_id                = -1,
 207         .cmd_per_lun            = 3,
 208         .use_clustering         = ENABLE_CLUSTERING,
 209         .sg_tablesize           = SG_ALL,
 210
 211         .max_sectors            = 0xFFFF,
 212         .shost_attrs            = qla4xxx_host_attrs,
 213         .host_reset             = qla4xxx_host_reset,
 214         .vendor_id              = SCSI_NL_VID_TYPE_PCI | PCI_VENDOR_ID_QLOGIC,
 215 };
 216
 217 static struct iscsi_transport qla4xxx_iscsi_transport = {
 218         .owner                  = THIS_MODULE,
 219         .name                   = DRIVER_NAME,
 220         .caps                   = CAP_TEXT_NEGO |
 221                                   CAP_DATA_PATH_OFFLOAD | CAP_HDRDGST |
 222                                   CAP_DATADGST | CAP_LOGIN_OFFLOAD |
 223                                   CAP_MULTI_R2T,
 224         .attr_is_visible        = qla4_attr_is_visible,
 225         .create_session         = qla4xxx_session_create,
 226         .destroy_session        = qla4xxx_session_destroy,
 227         .start_conn             = qla4xxx_conn_start,
 228         .create_conn            = qla4xxx_conn_create,
 229         .bind_conn              = qla4xxx_conn_bind,
 230         .stop_conn              = iscsi_conn_stop,
 231         .destroy_conn           = qla4xxx_conn_destroy,
 232         .set_param              = iscsi_set_param,
 233         .get_conn_param         = qla4xxx_conn_get_param,
 234         .get_session_param      = qla4xxx_session_get_param,
 235         .get_ep_param           = qla4xxx_get_ep_param,
 236         .ep_connect             = qla4xxx_ep_connect,
 237         .ep_poll                = qla4xxx_ep_poll,
 238         .ep_disconnect          = qla4xxx_ep_disconnect,
 239         .get_stats              = qla4xxx_conn_get_stats,
 240         .send_pdu               = iscsi_conn_send_pdu,
 241         .xmit_task              = qla4xxx_task_xmit,
 242         .cleanup_task           = qla4xxx_task_cleanup,
 243         .alloc_pdu              = qla4xxx_alloc_pdu,
 244
 245         .get_host_param         = qla4xxx_host_get_param,
 246         .set_iface_param        = qla4xxx_iface_set_param,
 247         .get_iface_param        = qla4xxx_get_iface_param,
 248         .bsg_request            = qla4xxx_bsg_request,
 249         .send_ping              = qla4xxx_send_ping,
 250         .get_chap               = qla4xxx_get_chap_list,
 251         .delete_chap            = qla4xxx_delete_chap,
 252         .set_chap               = qla4xxx_set_chap_entry,
 253         .get_flashnode_param    = qla4xxx_sysfs_ddb_get_param,
 254         .set_flashnode_param    = qla4xxx_sysfs_ddb_set_param,
 255         .new_flashnode          = qla4xxx_sysfs_ddb_add,
 256         .del_flashnode          = qla4xxx_sysfs_ddb_delete,
 257         .login_flashnode        = qla4xxx_sysfs_ddb_login,
 258         .logout_flashnode       = qla4xxx_sysfs_ddb_logout,
 259         .logout_flashnode_sid   = qla4xxx_sysfs_ddb_logout_sid,
 260         .get_host_stats         = qla4xxx_get_host_stats,
 261 };
 262
 263 static struct scsi_transport_template *qla4xxx_scsi_transport;
 264
 265 static int qla4xxx_send_ping(struct Scsi_Host *shost, uint32_t iface_num,
 266                              uint32_t iface_type, uint32_t payload_size,
 267                              uint32_t pid, struct sockaddr *dst_addr)
 268 {
 269         struct scsi_qla_host *ha = to_qla_host(shost);
 270         struct sockaddr_in *addr;
 271         struct sockaddr_in6 *addr6;
 272         uint32_t options = 0;
 273         uint8_t ipaddr[IPv6_ADDR_LEN];
 274         int rval;
 275
 276         memset(ipaddr, 0, IPv6_ADDR_LEN);
 277         /* IPv4 to IPv4 */
 278         if ((iface_type == ISCSI_IFACE_TYPE_IPV4) &&
 279             (dst_addr->sa_family == AF_INET)) {
 280                 addr = (struct sockaddr_in *)dst_addr;
 281                 memcpy(ipaddr, &addr->sin_addr.s_addr, IP_ADDR_LEN);
 282                 DEBUG2(ql4_printk(KERN_INFO, ha, "%s: IPv4 Ping src: %pI4 "
 283                                   "dest: %pI4\n", __func__,
 284                                   &ha->ip_config.ip_address, ipaddr));
 285                 rval = qla4xxx_ping_iocb(ha, options, payload_size, pid,
 286                                          ipaddr);
 287                 if (rval)
 288                         rval = -EINVAL;
 289         } else if ((iface_type == ISCSI_IFACE_TYPE_IPV6) &&
 290                    (dst_addr->sa_family == AF_INET6)) {
 291                 /* IPv6 to IPv6 */
 292                 addr6 = (struct sockaddr_in6 *)dst_addr;
 293                 memcpy(ipaddr, &addr6->sin6_addr.in6_u.u6_addr8, IPv6_ADDR_LEN);
 294
 295                 options |= PING_IPV6_PROTOCOL_ENABLE;
 296
 297                 /* Ping using LinkLocal address */
 298                 if ((iface_num == 0) || (iface_num == 1)) {
 299                         DEBUG2(ql4_printk(KERN_INFO, ha, "%s: LinkLocal Ping "
 300                                           "src: %pI6 dest: %pI6\n", __func__,
 301                                           &ha->ip_config.ipv6_link_local_addr,
 302                                           ipaddr));
 303                         options |= PING_IPV6_LINKLOCAL_ADDR;
 304                         rval = qla4xxx_ping_iocb(ha, options, payload_size,
 305                                                  pid, ipaddr);
 306                 } else {
 307                         ql4_printk(KERN_WARNING, ha, "%s: iface num = %d "
 308                                    "not supported\n", __func__, iface_num);
 309                         rval = -ENOSYS;
 310                         goto exit_send_ping;
 311                 }
 312
 313                 /*
 314                  * If ping using LinkLocal address fails, try ping using
 315                  * IPv6 address
 316                  */
 317                 if (rval != QLA_SUCCESS) {
 318                         options &= ~PING_IPV6_LINKLOCAL_ADDR;
 319                         if (iface_num == 0) {
 320                                 options |= PING_IPV6_ADDR0;
 321                                 DEBUG2(ql4_printk(KERN_INFO, ha, "%s: IPv6 "
 322                                                   "Ping src: %pI6 "
 323                                                   "dest: %pI6\n", __func__,
 324                                                   &ha->ip_config.ipv6_addr0,
 325                                                   ipaddr));
 326                         } else if (iface_num == 1) {
 327                                 options |= PING_IPV6_ADDR1;
 328                                 DEBUG2(ql4_printk(KERN_INFO, ha, "%s: IPv6 "
 329                                                   "Ping src: %pI6 "
 330                                                   "dest: %pI6\n", __func__,
 331                                                   &ha->ip_config.ipv6_addr1,
 332                                                   ipaddr));
 333                         }
 334                         rval = qla4xxx_ping_iocb(ha, options, payload_size,
 335                                                  pid, ipaddr);
 336                         if (rval)
 337                                 rval = -EINVAL;
 338                 }
 339         } else
 340                 rval = -ENOSYS;
 341 exit_send_ping:
 342         return rval;
 343 }
 344
 345 static umode_t qla4_attr_is_visible(int param_type, int param)
 346 {
 347         switch (param_type) {
 348         case ISCSI_HOST_PARAM:
 349                 switch (param) {
 350                 case ISCSI_HOST_PARAM_HWADDRESS:
 351                 case ISCSI_HOST_PARAM_IPADDRESS:
 352                 case ISCSI_HOST_PARAM_INITIATOR_NAME:
 353                 case ISCSI_HOST_PARAM_PORT_STATE:
 354                 case ISCSI_HOST_PARAM_PORT_SPEED:
 355                         return S_IRUGO;
 356                 default:
 357                         return 0;
 358                 }
 359         case ISCSI_PARAM:
 360                 switch (param) {
 361                 case ISCSI_PARAM_PERSISTENT_ADDRESS:
 362                 case ISCSI_PARAM_PERSISTENT_PORT:
 363                 case ISCSI_PARAM_CONN_ADDRESS:
 364                 case ISCSI_PARAM_CONN_PORT:
 365                 case ISCSI_PARAM_TARGET_NAME:
 366                 case ISCSI_PARAM_TPGT:
 367                 case ISCSI_PARAM_TARGET_ALIAS:
 368                 case ISCSI_PARAM_MAX_BURST:
 369                 case ISCSI_PARAM_MAX_R2T:
 370                 case ISCSI_PARAM_FIRST_BURST:
 371                 case ISCSI_PARAM_MAX_RECV_DLENGTH:
 372                 case ISCSI_PARAM_MAX_XMIT_DLENGTH:
 373                 case ISCSI_PARAM_IFACE_NAME:
 374                 case ISCSI_PARAM_CHAP_OUT_IDX:
 375                 case ISCSI_PARAM_CHAP_IN_IDX:
 376                 case ISCSI_PARAM_USERNAME:
 377                 case ISCSI_PARAM_PASSWORD:
 378                 case ISCSI_PARAM_USERNAME_IN:
 379                 case ISCSI_PARAM_PASSWORD_IN:
 380                 case ISCSI_PARAM_AUTO_SND_TGT_DISABLE:
 381                 case ISCSI_PARAM_DISCOVERY_SESS:
 382                 case ISCSI_PARAM_PORTAL_TYPE:
 383                 case ISCSI_PARAM_CHAP_AUTH_EN:
 384                 case ISCSI_PARAM_DISCOVERY_LOGOUT_EN:
 385                 case ISCSI_PARAM_BIDI_CHAP_EN:
 386                 case ISCSI_PARAM_DISCOVERY_AUTH_OPTIONAL:
 387                 case ISCSI_PARAM_DEF_TIME2WAIT:
 388                 case ISCSI_PARAM_DEF_TIME2RETAIN:
 389                 case ISCSI_PARAM_HDRDGST_EN:
 390                 case ISCSI_PARAM_DATADGST_EN:
 391                 case ISCSI_PARAM_INITIAL_R2T_EN:
 392                 case ISCSI_PARAM_IMM_DATA_EN:
 393                 case ISCSI_PARAM_PDU_INORDER_EN:
 394                 case ISCSI_PARAM_DATASEQ_INORDER_EN:
 395                 case ISCSI_PARAM_MAX_SEGMENT_SIZE:
 396                 case ISCSI_PARAM_TCP_TIMESTAMP_STAT:
 397                 case ISCSI_PARAM_TCP_WSF_DISABLE:
 398                 case ISCSI_PARAM_TCP_NAGLE_DISABLE:
 399                 case ISCSI_PARAM_TCP_TIMER_SCALE:
 400                 case ISCSI_PARAM_TCP_TIMESTAMP_EN:
 401                 case ISCSI_PARAM_TCP_XMIT_WSF:
 402                 case ISCSI_PARAM_TCP_RECV_WSF:
 403                 case ISCSI_PARAM_IP_FRAGMENT_DISABLE:
 404                 case ISCSI_PARAM_IPV4_TOS:
 405                 case ISCSI_PARAM_IPV6_TC:
 406                 case ISCSI_PARAM_IPV6_FLOW_LABEL:
 407                 case ISCSI_PARAM_IS_FW_ASSIGNED_IPV6:
 408                 case ISCSI_PARAM_KEEPALIVE_TMO:
 409                 case ISCSI_PARAM_LOCAL_PORT:
 410                 case ISCSI_PARAM_ISID:
 411                 case ISCSI_PARAM_TSID:
 412                 case ISCSI_PARAM_DEF_TASKMGMT_TMO:
 413                 case ISCSI_PARAM_ERL:
 414                 case ISCSI_PARAM_STATSN:
 415                 case ISCSI_PARAM_EXP_STATSN:
 416                 case ISCSI_PARAM_DISCOVERY_PARENT_IDX:
 417                 case ISCSI_PARAM_DISCOVERY_PARENT_TYPE:
 418                 case ISCSI_PARAM_LOCAL_IPADDR:
 419                         return S_IRUGO;
 420                 default:
 421                         return 0;
 422                 }
 423         case ISCSI_NET_PARAM:
 424                 switch (param) {
 425                 case ISCSI_NET_PARAM_IPV4_ADDR:
 426                 case ISCSI_NET_PARAM_IPV4_SUBNET:
 427                 case ISCSI_NET_PARAM_IPV4_GW:
 428                 case ISCSI_NET_PARAM_IPV4_BOOTPROTO:
 429                 case ISCSI_NET_PARAM_IFACE_ENABLE:
 430                 case ISCSI_NET_PARAM_IPV6_LINKLOCAL:
 431                 case ISCSI_NET_PARAM_IPV6_ADDR:
 432                 case ISCSI_NET_PARAM_IPV6_ROUTER:
 433                 case ISCSI_NET_PARAM_IPV6_ADDR_AUTOCFG:
 434                 case ISCSI_NET_PARAM_IPV6_LINKLOCAL_AUTOCFG:
 435                 case ISCSI_NET_PARAM_VLAN_ID:
 436                 case ISCSI_NET_PARAM_VLAN_PRIORITY:
 437                 case ISCSI_NET_PARAM_VLAN_ENABLED:
 438                 case ISCSI_NET_PARAM_MTU:
 439                 case ISCSI_NET_PARAM_PORT:
 440                 case ISCSI_NET_PARAM_IPADDR_STATE:
 441                 case ISCSI_NET_PARAM_IPV6_LINKLOCAL_STATE:
 442                 case ISCSI_NET_PARAM_IPV6_ROUTER_STATE:
 443                 case ISCSI_NET_PARAM_DELAYED_ACK_EN:
 444                 case ISCSI_NET_PARAM_TCP_NAGLE_DISABLE:
 445                 case ISCSI_NET_PARAM_TCP_WSF_DISABLE:
 446                 case ISCSI_NET_PARAM_TCP_WSF:
 447                 case ISCSI_NET_PARAM_TCP_TIMER_SCALE:
 448                 case ISCSI_NET_PARAM_TCP_TIMESTAMP_EN:
 449                 case ISCSI_NET_PARAM_CACHE_ID:
 450                 case ISCSI_NET_PARAM_IPV4_DHCP_DNS_ADDR_EN:
 451                 case ISCSI_NET_PARAM_IPV4_DHCP_SLP_DA_EN:
 452                 case ISCSI_NET_PARAM_IPV4_TOS_EN:
 453                 case ISCSI_NET_PARAM_IPV4_TOS:
 454                 case ISCSI_NET_PARAM_IPV4_GRAT_ARP_EN:
 455                 case ISCSI_NET_PARAM_IPV4_DHCP_ALT_CLIENT_ID_EN:
 456                 case ISCSI_NET_PARAM_IPV4_DHCP_ALT_CLIENT_ID:
 457                 case ISCSI_NET_PARAM_IPV4_DHCP_REQ_VENDOR_ID_EN:
 458                 case ISCSI_NET_PARAM_IPV4_DHCP_USE_VENDOR_ID_EN:
 459                 case ISCSI_NET_PARAM_IPV4_DHCP_VENDOR_ID:
 460                 case ISCSI_NET_PARAM_IPV4_DHCP_LEARN_IQN_EN:
 461                 case ISCSI_NET_PARAM_IPV4_FRAGMENT_DISABLE:
 462                 case ISCSI_NET_PARAM_IPV4_IN_FORWARD_EN:
 463                 case ISCSI_NET_PARAM_REDIRECT_EN:
 464                 case ISCSI_NET_PARAM_IPV4_TTL:
 465                 case ISCSI_NET_PARAM_IPV6_GRAT_NEIGHBOR_ADV_EN:
 466                 case ISCSI_NET_PARAM_IPV6_MLD_EN:
 467                 case ISCSI_NET_PARAM_IPV6_FLOW_LABEL:
 468                 case ISCSI_NET_PARAM_IPV6_TRAFFIC_CLASS:
 469                 case ISCSI_NET_PARAM_IPV6_HOP_LIMIT:
 470                 case ISCSI_NET_PARAM_IPV6_ND_REACHABLE_TMO:
 471                 case ISCSI_NET_PARAM_IPV6_ND_REXMIT_TIME:
 472                 case ISCSI_NET_PARAM_IPV6_ND_STALE_TMO:
 473                 case ISCSI_NET_PARAM_IPV6_DUP_ADDR_DETECT_CNT:
 474                 case ISCSI_NET_PARAM_IPV6_RTR_ADV_LINK_MTU:
 475                         return S_IRUGO;
 476                 default:
 477                         return 0;
 478                 }
 479         case ISCSI_IFACE_PARAM:
 480                 switch (param) {
 481                 case ISCSI_IFACE_PARAM_DEF_TASKMGMT_TMO:
 482                 case ISCSI_IFACE_PARAM_HDRDGST_EN:
 483                 case ISCSI_IFACE_PARAM_DATADGST_EN:
 484                 case ISCSI_IFACE_PARAM_IMM_DATA_EN:
 485                 case ISCSI_IFACE_PARAM_INITIAL_R2T_EN:
 486                 case ISCSI_IFACE_PARAM_DATASEQ_INORDER_EN:
 487                 case ISCSI_IFACE_PARAM_PDU_INORDER_EN:
 488                 case ISCSI_IFACE_PARAM_ERL:
 489                 case ISCSI_IFACE_PARAM_MAX_RECV_DLENGTH:
 490                 case ISCSI_IFACE_PARAM_FIRST_BURST:
 491                 case ISCSI_IFACE_PARAM_MAX_R2T:
 492                 case ISCSI_IFACE_PARAM_MAX_BURST:
 493                 case ISCSI_IFACE_PARAM_CHAP_AUTH_EN:
 494                 case ISCSI_IFACE_PARAM_BIDI_CHAP_EN:
 495                 case ISCSI_IFACE_PARAM_DISCOVERY_AUTH_OPTIONAL:
 496                 case ISCSI_IFACE_PARAM_DISCOVERY_LOGOUT_EN:
 497                 case ISCSI_IFACE_PARAM_STRICT_LOGIN_COMP_EN:
 498                 case ISCSI_IFACE_PARAM_INITIATOR_NAME:
 499                         return S_IRUGO;
 500                 default:
 501                         return 0;
 502                 }
 503         case ISCSI_FLASHNODE_PARAM:
 504                 switch (param) {
 505                 case ISCSI_FLASHNODE_IS_FW_ASSIGNED_IPV6:
 506                 case ISCSI_FLASHNODE_PORTAL_TYPE:
 507                 case ISCSI_FLASHNODE_AUTO_SND_TGT_DISABLE:
 508                 case ISCSI_FLASHNODE_DISCOVERY_SESS:
 509                 case ISCSI_FLASHNODE_ENTRY_EN:
 510                 case ISCSI_FLASHNODE_HDR_DGST_EN:
 511                 case ISCSI_FLASHNODE_DATA_DGST_EN:
 512                 case ISCSI_FLASHNODE_IMM_DATA_EN:
 513                 case ISCSI_FLASHNODE_INITIAL_R2T_EN:
 514                 case ISCSI_FLASHNODE_DATASEQ_INORDER:
 515                 case ISCSI_FLASHNODE_PDU_INORDER:
 516                 case ISCSI_FLASHNODE_CHAP_AUTH_EN:
 517                 case ISCSI_FLASHNODE_SNACK_REQ_EN:
 518                 case ISCSI_FLASHNODE_DISCOVERY_LOGOUT_EN:
 519                 case ISCSI_FLASHNODE_BIDI_CHAP_EN:
 520                 case ISCSI_FLASHNODE_DISCOVERY_AUTH_OPTIONAL:
 521                 case ISCSI_FLASHNODE_ERL:
 522                 case ISCSI_FLASHNODE_TCP_TIMESTAMP_STAT:
 523                 case ISCSI_FLASHNODE_TCP_NAGLE_DISABLE:
 524                 case ISCSI_FLASHNODE_TCP_WSF_DISABLE:
 525                 case ISCSI_FLASHNODE_TCP_TIMER_SCALE:
 526                 case ISCSI_FLASHNODE_TCP_TIMESTAMP_EN:
 527                 case ISCSI_FLASHNODE_IP_FRAG_DISABLE:
 528                 case ISCSI_FLASHNODE_MAX_RECV_DLENGTH:
 529                 case ISCSI_FLASHNODE_MAX_XMIT_DLENGTH:
 530                 case ISCSI_FLASHNODE_FIRST_BURST:
 531                 case ISCSI_FLASHNODE_DEF_TIME2WAIT:
 532                 case ISCSI_FLASHNODE_DEF_TIME2RETAIN:
 533                 case ISCSI_FLASHNODE_MAX_R2T:
 534                 case ISCSI_FLASHNODE_KEEPALIVE_TMO:
 535                 case ISCSI_FLASHNODE_ISID:
 536                 case ISCSI_FLASHNODE_TSID:
 537                 case ISCSI_FLASHNODE_PORT:
 538                 case ISCSI_FLASHNODE_MAX_BURST:
 539                 case ISCSI_FLASHNODE_DEF_TASKMGMT_TMO:
 540                 case ISCSI_FLASHNODE_IPADDR:
 541                 case ISCSI_FLASHNODE_ALIAS:
 542                 case ISCSI_FLASHNODE_REDIRECT_IPADDR:
 543                 case ISCSI_FLASHNODE_MAX_SEGMENT_SIZE:
 544                 case ISCSI_FLASHNODE_LOCAL_PORT:
 545                 case ISCSI_FLASHNODE_IPV4_TOS:
 546                 case ISCSI_FLASHNODE_IPV6_TC:
 547                 case ISCSI_FLASHNODE_IPV6_FLOW_LABEL:
 548                 case ISCSI_FLASHNODE_NAME:
 549                 case ISCSI_FLASHNODE_TPGT:
 550                 case ISCSI_FLASHNODE_LINK_LOCAL_IPV6:
 551                 case ISCSI_FLASHNODE_DISCOVERY_PARENT_IDX:
 552                 case ISCSI_FLASHNODE_DISCOVERY_PARENT_TYPE:
 553                 case ISCSI_FLASHNODE_TCP_XMIT_WSF:
 554                 case ISCSI_FLASHNODE_TCP_RECV_WSF:
 555                 case ISCSI_FLASHNODE_CHAP_OUT_IDX:
 556                 case ISCSI_FLASHNODE_USERNAME:
 557                 case ISCSI_FLASHNODE_PASSWORD:
 558                 case ISCSI_FLASHNODE_STATSN:
 559                 case ISCSI_FLASHNODE_EXP_STATSN:
 560                 case ISCSI_FLASHNODE_IS_BOOT_TGT:
 561                         return S_IRUGO;
 562                 default:
 563                         return 0;
 564                 }
 565         }
 566
 567         return 0;
 568 }
 569
 570 /**
 571  * qla4xxx_create chap_list - Create CHAP list from FLASH
 572  * @ha: pointer to adapter structure
 573  *
 574  * Read flash and make a list of CHAP entries, during login when a CHAP entry
 575  * is received, it will be checked in this list. If entry exist then the CHAP
 576  * entry index is set in the DDB. If CHAP entry does not exist in this list
 577  * then a new entry is added in FLASH in CHAP table and the index obtained is
 578  * used in the DDB.
 579  **/
 580 static void qla4xxx_create_chap_list(struct scsi_qla_host *ha)
 581 {
 582         int rval = 0;
 583         uint8_t *chap_flash_data = NULL;
 584         uint32_t offset;
 585         dma_addr_t chap_dma;
 586         uint32_t chap_size = 0;
 587
 588         if (is_qla40XX(ha))
 589                 chap_size = MAX_CHAP_ENTRIES_40XX *
 590                             sizeof(struct ql4_chap_table);
 591         else    /* Single region contains CHAP info for both
 592                  * ports which is divided into half for each port.
 593                  */
 594                 chap_size = ha->hw.flt_chap_size / 2;
 595
 596         chap_flash_data = dma_alloc_coherent(&ha->pdev->dev, chap_size,
 597                                              &chap_dma, GFP_KERNEL);
 598         if (!chap_flash_data) {
 599                 ql4_printk(KERN_ERR, ha, "No memory for chap_flash_data\n");
 600                 return;
 601         }
 602
 603         if (is_qla40XX(ha)) {
 604                 offset = FLASH_CHAP_OFFSET;
 605         } else {
 606                 offset = FLASH_RAW_ACCESS_ADDR + (ha->hw.flt_region_chap << 2);
 607                 if (ha->port_num == 1)
 608                         offset += chap_size;
 609         }
 610
 611         rval = qla4xxx_get_flash(ha, chap_dma, offset, chap_size);
 612         if (rval != QLA_SUCCESS)
 613                 goto exit_chap_list;
 614
 615         if (ha->chap_list == NULL)
 616                 ha->chap_list = vmalloc(chap_size);
 617         if (ha->chap_list == NULL) {
 618                 ql4_printk(KERN_ERR, ha, "No memory for ha->chap_list\n");
 619                 goto exit_chap_list;
 620         }
 621
 622         memset(ha->chap_list, 0, chap_size);
 623         memcpy(ha->chap_list, chap_flash_data, chap_size);
 624
 625 exit_chap_list:
 626         dma_free_coherent(&ha->pdev->dev, chap_size, chap_flash_data, chap_dma);
 627 }
 628
 629 static int qla4xxx_get_chap_by_index(struct scsi_qla_host *ha,
 630                                      int16_t chap_index,
 631                                      struct ql4_chap_table **chap_entry)
 632 {
 633         int rval = QLA_ERROR;
 634         int max_chap_entries;
 635
 636         if (!ha->chap_list) {
 637                 ql4_printk(KERN_ERR, ha, "CHAP table cache is empty!\n");
 638                 rval = QLA_ERROR;
 639                 goto exit_get_chap;
 640         }
 641
 642         if (is_qla80XX(ha))
 643                 max_chap_entries = (ha->hw.flt_chap_size / 2) /
 644                                    sizeof(struct ql4_chap_table);
 645         else
 646                 max_chap_entries = MAX_CHAP_ENTRIES_40XX;
 647
 648         if (chap_index > max_chap_entries) {
 649                 ql4_printk(KERN_ERR, ha, "Invalid Chap index\n");
 650                 rval = QLA_ERROR;
 651                 goto exit_get_chap;
 652         }
 653
 654         *chap_entry = (struct ql4_chap_table *)ha->chap_list + chap_index;
 655         if ((*chap_entry)->cookie !=
 656              __constant_cpu_to_le16(CHAP_VALID_COOKIE)) {
 657                 rval = QLA_ERROR;
 658                 *chap_entry = NULL;
 659         } else {
 660                 rval = QLA_SUCCESS;
 661         }
 662
 663 exit_get_chap:
 664         return rval;
 665 }
 666
 667 /**
 668  * qla4xxx_find_free_chap_index - Find the first free chap index
 669  * @ha: pointer to adapter structure
 670  * @chap_index: CHAP index to be returned
 671  *
 672  * Find the first free chap index available in the chap table
 673  *
 674  * Note: Caller should acquire the chap lock before getting here.
 675  **/
 676 static int qla4xxx_find_free_chap_index(struct scsi_qla_host *ha,
 677                                         uint16_t *chap_index)
 678 {
 679         int i, rval;
 680         int free_index = -1;
 681         int max_chap_entries = 0;
 682         struct ql4_chap_table *chap_table;
 683
 684         if (is_qla80XX(ha))
 685                 max_chap_entries = (ha->hw.flt_chap_size / 2) /
 686                                                 sizeof(struct ql4_chap_table);
 687         else
 688                 max_chap_entries = MAX_CHAP_ENTRIES_40XX;
 689
 690         if (!ha->chap_list) {
 691                 ql4_printk(KERN_ERR, ha, "CHAP table cache is empty!\n");
 692                 rval = QLA_ERROR;
 693                 goto exit_find_chap;
 694         }
 695
 696         for (i = 0; i < max_chap_entries; i++) {
 697                 chap_table = (struct ql4_chap_table *)ha->chap_list + i;
 698
 699                 if ((chap_table->cookie !=
 700                     __constant_cpu_to_le16(CHAP_VALID_COOKIE)) &&
 701                    (i > MAX_RESRV_CHAP_IDX)) {
 702                                 free_index = i;
 703                                 break;
 704                 }
 705         }
 706
 707         if (free_index != -1) {
 708                 *chap_index = free_index;
 709                 rval = QLA_SUCCESS;
 710         } else {
 711                 rval = QLA_ERROR;
 712         }
 713
 714 exit_find_chap:
 715         return rval;
 716 }
 717
 718 static int qla4xxx_get_chap_list(struct Scsi_Host *shost, uint16_t chap_tbl_idx,
 719                                   uint32_t *num_entries, char *buf)
 720 {
 721         struct scsi_qla_host *ha = to_qla_host(shost);
 722         struct ql4_chap_table *chap_table;
 723         struct iscsi_chap_rec *chap_rec;
 724         int max_chap_entries = 0;
 725         int valid_chap_entries = 0;
 726         int ret = 0, i;
 727
 728         if (is_qla80XX(ha))
 729                 max_chap_entries = (ha->hw.flt_chap_size / 2) /
 730                                         sizeof(struct ql4_chap_table);
 731         else
 732                 max_chap_entries = MAX_CHAP_ENTRIES_40XX;
 733
 734         ql4_printk(KERN_INFO, ha, "%s: num_entries = %d, CHAP idx = %d\n",
 735                         __func__, *num_entries, chap_tbl_idx);
 736
 737         if (!buf) {
 738                 ret = -ENOMEM;
 739                 goto exit_get_chap_list;
 740         }
 741
 742         qla4xxx_create_chap_list(ha);
 743
 744         chap_rec = (struct iscsi_chap_rec *) buf;
 745         mutex_lock(&ha->chap_sem);
 746         for (i = chap_tbl_idx; i < max_chap_entries; i++) {
 747                 chap_table = (struct ql4_chap_table *)ha->chap_list + i;
 748                 if (chap_table->cookie !=
 749                     __constant_cpu_to_le16(CHAP_VALID_COOKIE))
 750                         continue;
 751
 752                 chap_rec->chap_tbl_idx = i;
 753                 strlcpy(chap_rec->username, chap_table->name,
 754                         ISCSI_CHAP_AUTH_NAME_MAX_LEN);
 755                 strlcpy(chap_rec->password, chap_table->secret,
 756                         QL4_CHAP_MAX_SECRET_LEN);
 757                 chap_rec->password_length = chap_table->secret_len;
 758
 759                 if (chap_table->flags & BIT_7) /* local */
 760                         chap_rec->chap_type = CHAP_TYPE_OUT;
 761
 762                 if (chap_table->flags & BIT_6) /* peer */
 763                         chap_rec->chap_type = CHAP_TYPE_IN;
 764
 765                 chap_rec++;
 766
 767                 valid_chap_entries++;
 768                 if (valid_chap_entries == *num_entries)
 769                         break;
 770                 else
 771                         continue;
 772         }
 773         mutex_unlock(&ha->chap_sem);
 774
 775 exit_get_chap_list:
 776         ql4_printk(KERN_INFO, ha, "%s: Valid CHAP Entries = %d\n",
 777                         __func__,  valid_chap_entries);
 778         *num_entries = valid_chap_entries;
 779         return ret;
 780 }
 781
 782 static int __qla4xxx_is_chap_active(struct device *dev, void *data)
 783 {
 784         int ret = 0;
 785         uint16_t *chap_tbl_idx = (uint16_t *) data;
 786         struct iscsi_cls_session *cls_session;
 787         struct iscsi_session *sess;
 788         struct ddb_entry *ddb_entry;
 789
 790         if (!iscsi_is_session_dev(dev))
 791                 goto exit_is_chap_active;
 792
 793         cls_session = iscsi_dev_to_session(dev);
 794         sess = cls_session->dd_data;
 795         ddb_entry = sess->dd_data;
 796
 797         if (iscsi_session_chkready(cls_session))
 798                 goto exit_is_chap_active;
 799
 800         if (ddb_entry->chap_tbl_idx == *chap_tbl_idx)
 801                 ret = 1;
 802
 803 exit_is_chap_active:
 804         return ret;
 805 }
 806
 807 static int qla4xxx_is_chap_active(struct Scsi_Host *shost,
 808                                   uint16_t chap_tbl_idx)
 809 {
 810         int ret = 0;
 811
 812         ret = device_for_each_child(&shost->shost_gendev, &chap_tbl_idx,
 813                                     __qla4xxx_is_chap_active);
 814
 815         return ret;
 816 }
 817
 818 static int qla4xxx_delete_chap(struct Scsi_Host *shost, uint16_t chap_tbl_idx)
 819 {
 820         struct scsi_qla_host *ha = to_qla_host(shost);
 821         struct ql4_chap_table *chap_table;
 822         dma_addr_t chap_dma;
 823         int max_chap_entries = 0;
 824         uint32_t offset = 0;
 825         uint32_t chap_size;
 826         int ret = 0;
 827
 828         chap_table = dma_pool_alloc(ha->chap_dma_pool, GFP_KERNEL, &chap_dma);
 829         if (chap_table == NULL)
 830                 return -ENOMEM;
 831
 832         memset(chap_table, 0, sizeof(struct ql4_chap_table));
 833
 834         if (is_qla80XX(ha))
 835                 max_chap_entries = (ha->hw.flt_chap_size / 2) /
 836                                    sizeof(struct ql4_chap_table);
 837         else
 838                 max_chap_entries = MAX_CHAP_ENTRIES_40XX;
 839
 840         if (chap_tbl_idx > max_chap_entries) {
 841                 ret = -EINVAL;
 842                 goto exit_delete_chap;
 843         }
 844
 845         /* Check if chap index is in use.
 846          * If chap is in use don't delet chap entry */
 847         ret = qla4xxx_is_chap_active(shost, chap_tbl_idx);
 848         if (ret) {
 849                 ql4_printk(KERN_INFO, ha, "CHAP entry %d is in use, cannot "
 850                            "delete from flash\n", chap_tbl_idx);
 851                 ret = -EBUSY;
 852                 goto exit_delete_chap;
 853         }
 854
 855         chap_size = sizeof(struct ql4_chap_table);
 856         if (is_qla40XX(ha))
 857                 offset = FLASH_CHAP_OFFSET | (chap_tbl_idx * chap_size);
 858         else {
 859                 offset = FLASH_RAW_ACCESS_ADDR + (ha->hw.flt_region_chap << 2);
 860                 /* flt_chap_size is CHAP table size for both ports
 861                  * so divide it by 2 to calculate the offset for second port
 862                  */
 863                 if (ha->port_num == 1)
 864                         offset += (ha->hw.flt_chap_size / 2);
 865                 offset += (chap_tbl_idx * chap_size);
 866         }
 867
 868         ret = qla4xxx_get_flash(ha, chap_dma, offset, chap_size);
 869         if (ret != QLA_SUCCESS) {
 870                 ret = -EINVAL;
 871                 goto exit_delete_chap;
 872         }
 873
 874         DEBUG2(ql4_printk(KERN_INFO, ha, "Chap Cookie: x%x\n",
 875                           __le16_to_cpu(chap_table->cookie)));
 876
 877         if (__le16_to_cpu(chap_table->cookie) != CHAP_VALID_COOKIE) {
 878                 ql4_printk(KERN_ERR, ha, "No valid chap entry found\n");
 879                 goto exit_delete_chap;
 880         }
 881
 882         chap_table->cookie = __constant_cpu_to_le16(0xFFFF);
 883
 884         offset = FLASH_CHAP_OFFSET |
 885                         (chap_tbl_idx * sizeof(struct ql4_chap_table));
 886         ret = qla4xxx_set_flash(ha, chap_dma, offset, chap_size,
 887                                 FLASH_OPT_RMW_COMMIT);
 888         if (ret == QLA_SUCCESS && ha->chap_list) {
 889                 mutex_lock(&ha->chap_sem);
 890                 /* Update ha chap_list cache */
 891                 memcpy((struct ql4_chap_table *)ha->chap_list + chap_tbl_idx,
 892                         chap_table, sizeof(struct ql4_chap_table));
 893                 mutex_unlock(&ha->chap_sem);
 894         }
 895         if (ret != QLA_SUCCESS)
 896                 ret =  -EINVAL;
 897
 898 exit_delete_chap:
 899         dma_pool_free(ha->chap_dma_pool, chap_table, chap_dma);
 900         return ret;
 901 }
 902
 903 /**
 904  * qla4xxx_set_chap_entry - Make chap entry with given information
 905  * @shost: pointer to host
 906  * @data: chap info - credentials, index and type to make chap entry
 907  * @len: length of data
 908  *
 909  * Add or update chap entry with the given information
 910  **/
 911 static int qla4xxx_set_chap_entry(struct Scsi_Host *shost, void *data, int len)
 912 {
 913         struct scsi_qla_host *ha = to_qla_host(shost);
 914         struct iscsi_chap_rec chap_rec;
 915         struct ql4_chap_table *chap_entry = NULL;
 916         struct iscsi_param_info *param_info;
 917         struct nlattr *attr;
 918         int max_chap_entries = 0;
 919         int type;
 920         int rem = len;
 921         int rc = 0;
 922         int size;
 923
 924         memset(&chap_rec, 0, sizeof(chap_rec));
 925
 926         nla_for_each_attr(attr, data, len, rem) {
 927                 param_info = nla_data(attr);
 928
 929                 switch (param_info->param) {
 930                 case ISCSI_CHAP_PARAM_INDEX:
 931                         chap_rec.chap_tbl_idx = *(uint16_t *)param_info->value;
 932                         break;
 933                 case ISCSI_CHAP_PARAM_CHAP_TYPE:
 934                         chap_rec.chap_type = param_info->value[0];
 935                         break;
 936                 case ISCSI_CHAP_PARAM_USERNAME:
 937                         size = min_t(size_t, sizeof(chap_rec.username),
 938                                      param_info->len);
 939                         memcpy(chap_rec.username, param_info->value, size);
 940                         break;
 941                 case ISCSI_CHAP_PARAM_PASSWORD:
 942                         size = min_t(size_t, sizeof(chap_rec.password),
 943                                      param_info->len);
 944                         memcpy(chap_rec.password, param_info->value, size);
 945                         break;
 946                 case ISCSI_CHAP_PARAM_PASSWORD_LEN:
 947                         chap_rec.password_length = param_info->value[0];
 948                         break;
 949                 default:
 950                         ql4_printk(KERN_ERR, ha,
 951                                    "%s: No such sysfs attribute\n", __func__);
 952                         rc = -ENOSYS;
 953                         goto exit_set_chap;
 954                 };
 955         }
 956
 957         if (chap_rec.chap_type == CHAP_TYPE_IN)
 958                 type = BIDI_CHAP;
 959         else
 960                 type = LOCAL_CHAP;
 961
 962         if (is_qla80XX(ha))
 963                 max_chap_entries = (ha->hw.flt_chap_size / 2) /
 964                                    sizeof(struct ql4_chap_table);
 965         else
 966                 max_chap_entries = MAX_CHAP_ENTRIES_40XX;
 967
 968         mutex_lock(&ha->chap_sem);
 969         if (chap_rec.chap_tbl_idx < max_chap_entries) {
 970                 rc = qla4xxx_get_chap_by_index(ha, chap_rec.chap_tbl_idx,
 971                                                &chap_entry);
 972                 if (!rc) {
 973                         if (!(type == qla4xxx_get_chap_type(chap_entry))) {
 974                                 ql4_printk(KERN_INFO, ha,
 975                                            "Type mismatch for CHAP entry %d\n",
 976                                            chap_rec.chap_tbl_idx);
 977                                 rc = -EINVAL;
 978                                 goto exit_unlock_chap;
 979                         }
 980
 981                         /* If chap index is in use then don't modify it */
 982                         rc = qla4xxx_is_chap_active(shost,
 983                                                     chap_rec.chap_tbl_idx);
 984                         if (rc) {
 985                                 ql4_printk(KERN_INFO, ha,
 986                                            "CHAP entry %d is in use\n",
 987                                            chap_rec.chap_tbl_idx);
 988                                 rc = -EBUSY;
 989                                 goto exit_unlock_chap;
 990                         }
 991                 }
 992         } else {
 993                 rc = qla4xxx_find_free_chap_index(ha, &chap_rec.chap_tbl_idx);
 994                 if (rc) {
 995                         ql4_printk(KERN_INFO, ha, "CHAP entry not available\n");
 996                         rc = -EBUSY;
 997                         goto exit_unlock_chap;
 998                 }
 999         }
1000
1001         rc = qla4xxx_set_chap(ha, chap_rec.username, chap_rec.password,
1002                               chap_rec.chap_tbl_idx, type);
1003
1004 exit_unlock_chap:
1005         mutex_unlock(&ha->chap_sem);
1006
1007 exit_set_chap:
1008         return rc;
1009 }
1010
1011
1012 static int qla4xxx_get_host_stats(struct Scsi_Host *shost, char *buf, int len)
1013 {
1014         struct scsi_qla_host *ha = to_qla_host(shost);
1015         struct iscsi_offload_host_stats *host_stats = NULL;
1016         int host_stats_size;
1017         int ret = 0;
1018         int ddb_idx = 0;
1019         struct ql_iscsi_stats *ql_iscsi_stats = NULL;
1020         int stats_size;
1021         dma_addr_t iscsi_stats_dma;
1022
1023         DEBUG2(ql4_printk(KERN_INFO, ha, "Func: %s\n", __func__));
1024
1025         host_stats_size = sizeof(struct iscsi_offload_host_stats);
1026
1027         if (host_stats_size != len) {
1028                 ql4_printk(KERN_INFO, ha, "%s: host_stats size mismatch expected = %d, is = %d\n",
1029                            __func__, len, host_stats_size);
1030                 ret = -EINVAL;
1031                 goto exit_host_stats;
1032         }
1033         host_stats = (struct iscsi_offload_host_stats *)buf;
1034
1035         if (!buf) {
1036                 ret = -ENOMEM;
1037                 goto exit_host_stats;
1038         }
1039
1040         stats_size = PAGE_ALIGN(sizeof(struct ql_iscsi_stats));
1041
1042         ql_iscsi_stats = dma_alloc_coherent(&ha->pdev->dev, stats_size,
1043                                             &iscsi_stats_dma, GFP_KERNEL);
1044         if (!ql_iscsi_stats) {
1045                 ql4_printk(KERN_ERR, ha,
1046                            "Unable to allocate memory for iscsi stats\n");
1047                 ret = -ENOMEM;
1048                 goto exit_host_stats;
1049         }
1050
1051         ret =  qla4xxx_get_mgmt_data(ha, ddb_idx, stats_size,
1052                                      iscsi_stats_dma);
1053         if (ret != QLA_SUCCESS) {
1054                 ql4_printk(KERN_ERR, ha,
1055                            "Unable to retrieve iscsi stats\n");
1056                 ret = -EIO;
1057                 goto exit_host_stats;
1058         }
1059         host_stats->mactx_frames = le64_to_cpu(ql_iscsi_stats->mac_tx_frames);
1060         host_stats->mactx_bytes = le64_to_cpu(ql_iscsi_stats->mac_tx_bytes);
1061         host_stats->mactx_multicast_frames =
1062                         le64_to_cpu(ql_iscsi_stats->mac_tx_multicast_frames);
1063         host_stats->mactx_broadcast_frames =
1064                         le64_to_cpu(ql_iscsi_stats->mac_tx_broadcast_frames);
1065         host_stats->mactx_pause_frames =
1066                         le64_to_cpu(ql_iscsi_stats->mac_tx_pause_frames);
1067         host_stats->mactx_control_frames =
1068                         le64_to_cpu(ql_iscsi_stats->mac_tx_control_frames);
1069         host_stats->mactx_deferral =
1070                         le64_to_cpu(ql_iscsi_stats->mac_tx_deferral);
1071         host_stats->mactx_excess_deferral =
1072                         le64_to_cpu(ql_iscsi_stats->mac_tx_excess_deferral);
1073         host_stats->mactx_late_collision =
1074                         le64_to_cpu(ql_iscsi_stats->mac_tx_late_collision);
1075         host_stats->mactx_abort = le64_to_cpu(ql_iscsi_stats->mac_tx_abort);
1076         host_stats->mactx_single_collision =
1077                         le64_to_cpu(ql_iscsi_stats->mac_tx_single_collision);
1078         host_stats->mactx_multiple_collision =
1079                         le64_to_cpu(ql_iscsi_stats->mac_tx_multiple_collision);
1080         host_stats->mactx_collision =
1081                         le64_to_cpu(ql_iscsi_stats->mac_tx_collision);
1082         host_stats->mactx_frames_dropped =
1083                         le64_to_cpu(ql_iscsi_stats->mac_tx_frames_dropped);
1084         host_stats->mactx_jumbo_frames =
1085                         le64_to_cpu(ql_iscsi_stats->mac_tx_jumbo_frames);
1086         host_stats->macrx_frames = le64_to_cpu(ql_iscsi_stats->mac_rx_frames);
1087         host_stats->macrx_bytes = le64_to_cpu(ql_iscsi_stats->mac_rx_bytes);
1088         host_stats->macrx_unknown_control_frames =
1089                 le64_to_cpu(ql_iscsi_stats->mac_rx_unknown_control_frames);
1090         host_stats->macrx_pause_frames =
1091                         le64_to_cpu(ql_iscsi_stats->mac_rx_pause_frames);
1092         host_stats->macrx_control_frames =
1093                         le64_to_cpu(ql_iscsi_stats->mac_rx_control_frames);
1094         host_stats->macrx_dribble =
1095                         le64_to_cpu(ql_iscsi_stats->mac_rx_dribble);
1096         host_stats->macrx_frame_length_error =
1097                         le64_to_cpu(ql_iscsi_stats->mac_rx_frame_length_error);
1098         host_stats->macrx_jabber = le64_to_cpu(ql_iscsi_stats->mac_rx_jabber);
1099         host_stats->macrx_carrier_sense_error =
1100                 le64_to_cpu(ql_iscsi_stats->mac_rx_carrier_sense_error);
1101         host_stats->macrx_frame_discarded =
1102                         le64_to_cpu(ql_iscsi_stats->mac_rx_frame_discarded);
1103         host_stats->macrx_frames_dropped =
1104                         le64_to_cpu(ql_iscsi_stats->mac_rx_frames_dropped);
1105         host_stats->mac_crc_error = le64_to_cpu(ql_iscsi_stats->mac_crc_error);
1106         host_stats->mac_encoding_error =
1107                         le64_to_cpu(ql_iscsi_stats->mac_encoding_error);
1108         host_stats->macrx_length_error_large =
1109                         le64_to_cpu(ql_iscsi_stats->mac_rx_length_error_large);
1110         host_stats->macrx_length_error_small =
1111                         le64_to_cpu(ql_iscsi_stats->mac_rx_length_error_small);
1112         host_stats->macrx_multicast_frames =
1113                         le64_to_cpu(ql_iscsi_stats->mac_rx_multicast_frames);
1114         host_stats->macrx_broadcast_frames =
1115                         le64_to_cpu(ql_iscsi_stats->mac_rx_broadcast_frames);
1116         host_stats->iptx_packets = le64_to_cpu(ql_iscsi_stats->ip_tx_packets);
1117         host_stats->iptx_bytes = le64_to_cpu(ql_iscsi_stats->ip_tx_bytes);
1118         host_stats->iptx_fragments =
1119                         le64_to_cpu(ql_iscsi_stats->ip_tx_fragments);
1120         host_stats->iprx_packets = le64_to_cpu(ql_iscsi_stats->ip_rx_packets);
1121         host_stats->iprx_bytes = le64_to_cpu(ql_iscsi_stats->ip_rx_bytes);
1122         host_stats->iprx_fragments =
1123                         le64_to_cpu(ql_iscsi_stats->ip_rx_fragments);
1124         host_stats->ip_datagram_reassembly =
1125                         le64_to_cpu(ql_iscsi_stats->ip_datagram_reassembly);
1126         host_stats->ip_invalid_address_error =
1127                         le64_to_cpu(ql_iscsi_stats->ip_invalid_address_error);
1128         host_stats->ip_error_packets =
1129                         le64_to_cpu(ql_iscsi_stats->ip_error_packets);
1130         host_stats->ip_fragrx_overlap =
1131                         le64_to_cpu(ql_iscsi_stats->ip_fragrx_overlap);
1132         host_stats->ip_fragrx_outoforder =
1133                         le64_to_cpu(ql_iscsi_stats->ip_fragrx_outoforder);
1134         host_stats->ip_datagram_reassembly_timeout =
1135                 le64_to_cpu(ql_iscsi_stats->ip_datagram_reassembly_timeout);
1136         host_stats->ipv6tx_packets =
1137                         le64_to_cpu(ql_iscsi_stats->ipv6_tx_packets);
1138         host_stats->ipv6tx_bytes = le64_to_cpu(ql_iscsi_stats->ipv6_tx_bytes);
1139         host_stats->ipv6tx_fragments =
1140                         le64_to_cpu(ql_iscsi_stats->ipv6_tx_fragments);
1141         host_stats->ipv6rx_packets =
1142                         le64_to_cpu(ql_iscsi_stats->ipv6_rx_packets);
1143         host_stats->ipv6rx_bytes = le64_to_cpu(ql_iscsi_stats->ipv6_rx_bytes);
1144         host_stats->ipv6rx_fragments =
1145                         le64_to_cpu(ql_iscsi_stats->ipv6_rx_fragments);
1146         host_stats->ipv6_datagram_reassembly =
1147                         le64_to_cpu(ql_iscsi_stats->ipv6_datagram_reassembly);
1148         host_stats->ipv6_invalid_address_error =
1149                 le64_to_cpu(ql_iscsi_stats->ipv6_invalid_address_error);
1150         host_stats->ipv6_error_packets =
1151                         le64_to_cpu(ql_iscsi_stats->ipv6_error_packets);
1152         host_stats->ipv6_fragrx_overlap =
1153                         le64_to_cpu(ql_iscsi_stats->ipv6_fragrx_overlap);
1154         host_stats->ipv6_fragrx_outoforder =
1155                         le64_to_cpu(ql_iscsi_stats->ipv6_fragrx_outoforder);
1156         host_stats->ipv6_datagram_reassembly_timeout =
1157                 le64_to_cpu(ql_iscsi_stats->ipv6_datagram_reassembly_timeout);
1158         host_stats->tcptx_segments =
1159                         le64_to_cpu(ql_iscsi_stats->tcp_tx_segments);
1160         host_stats->tcptx_bytes = le64_to_cpu(ql_iscsi_stats->tcp_tx_bytes);
1161         host_stats->tcprx_segments =
1162                         le64_to_cpu(ql_iscsi_stats->tcp_rx_segments);
1163         host_stats->tcprx_byte = le64_to_cpu(ql_iscsi_stats->tcp_rx_byte);
1164         host_stats->tcp_duplicate_ack_retx =
1165                         le64_to_cpu(ql_iscsi_stats->tcp_duplicate_ack_retx);
1166         host_stats->tcp_retx_timer_expired =
1167                         le64_to_cpu(ql_iscsi_stats->tcp_retx_timer_expired);
1168         host_stats->tcprx_duplicate_ack =
1169                         le64_to_cpu(ql_iscsi_stats->tcp_rx_duplicate_ack);
1170         host_stats->tcprx_pure_ackr =
1171                         le64_to_cpu(ql_iscsi_stats->tcp_rx_pure_ackr);
1172         host_stats->tcptx_delayed_ack =
1173                         le64_to_cpu(ql_iscsi_stats->tcp_tx_delayed_ack);
1174         host_stats->tcptx_pure_ack =
1175                         le64_to_cpu(ql_iscsi_stats->tcp_tx_pure_ack);
1176         host_stats->tcprx_segment_error =
1177                         le64_to_cpu(ql_iscsi_stats->tcp_rx_segment_error);
1178         host_stats->tcprx_segment_outoforder =
1179                         le64_to_cpu(ql_iscsi_stats->tcp_rx_segment_outoforder);
1180         host_stats->tcprx_window_probe =
1181                         le64_to_cpu(ql_iscsi_stats->tcp_rx_window_probe);
1182         host_stats->tcprx_window_update =
1183                         le64_to_cpu(ql_iscsi_stats->tcp_rx_window_update);
1184         host_stats->tcptx_window_probe_persist =
1185                 le64_to_cpu(ql_iscsi_stats->tcp_tx_window_probe_persist);
1186         host_stats->ecc_error_correction =
1187                         le64_to_cpu(ql_iscsi_stats->ecc_error_correction);
1188         host_stats->iscsi_pdu_tx = le64_to_cpu(ql_iscsi_stats->iscsi_pdu_tx);
1189         host_stats->iscsi_data_bytes_tx =
1190                         le64_to_cpu(ql_iscsi_stats->iscsi_data_bytes_tx);
1191         host_stats->iscsi_pdu_rx = le64_to_cpu(ql_iscsi_stats->iscsi_pdu_rx);
1192         host_stats->iscsi_data_bytes_rx =
1193                         le64_to_cpu(ql_iscsi_stats->iscsi_data_bytes_rx);
1194         host_stats->iscsi_io_completed =
1195                         le64_to_cpu(ql_iscsi_stats->iscsi_io_completed);
1196         host_stats->iscsi_unexpected_io_rx =
1197                         le64_to_cpu(ql_iscsi_stats->iscsi_unexpected_io_rx);
1198         host_stats->iscsi_format_error =
1199                         le64_to_cpu(ql_iscsi_stats->iscsi_format_error);
1200         host_stats->iscsi_hdr_digest_error =
1201                         le64_to_cpu(ql_iscsi_stats->iscsi_hdr_digest_error);
1202         host_stats->iscsi_data_digest_error =
1203                         le64_to_cpu(ql_iscsi_stats->iscsi_data_digest_error);
1204         host_stats->iscsi_sequence_error =
1205                         le64_to_cpu(ql_iscsi_stats->iscsi_sequence_error);
1206 exit_host_stats:
1207         if (ql_iscsi_stats)
1208                 dma_free_coherent(&ha->pdev->dev, host_stats_size,
1209                                   ql_iscsi_stats, iscsi_stats_dma);
1210
1211         ql4_printk(KERN_INFO, ha, "%s: Get host stats done\n",
1212                    __func__);
1213         return ret;
1214 }
1215
1216 static int qla4xxx_get_iface_param(struct iscsi_iface *iface,
1217                                    enum iscsi_param_type param_type,
1218                                    int param, char *buf)
1219 {
1220         struct Scsi_Host *shost = iscsi_iface_to_shost(iface);
1221         struct scsi_qla_host *ha = to_qla_host(shost);
1222         int ival;
1223         char *pval = NULL;
1224         int len = -ENOSYS;
1225
1226         if (param_type == ISCSI_NET_PARAM) {
1227                 switch (param) {
1228                 case ISCSI_NET_PARAM_IPV4_ADDR:
1229                         len = sprintf(buf, "%pI4\n", &ha->ip_config.ip_address);
1230                         break;
1231                 case ISCSI_NET_PARAM_IPV4_SUBNET:
1232                         len = sprintf(buf, "%pI4\n",
1233                                       &ha->ip_config.subnet_mask);
1234                         break;
1235                 case ISCSI_NET_PARAM_IPV4_GW:
1236                         len = sprintf(buf, "%pI4\n", &ha->ip_config.gateway);
1237                         break;
1238                 case ISCSI_NET_PARAM_IFACE_ENABLE:
1239                         if (iface->iface_type == ISCSI_IFACE_TYPE_IPV4) {
1240                                 OP_STATE(ha->ip_config.ipv4_options,
1241                                          IPOPT_IPV4_PROTOCOL_ENABLE, pval);
1242                         } else {
1243                                 OP_STATE(ha->ip_config.ipv6_options,
1244                                          IPV6_OPT_IPV6_PROTOCOL_ENABLE, pval);
1245                         }
1246
1247                         len = sprintf(buf, "%s\n", pval);
1248                         break;
1249                 case ISCSI_NET_PARAM_IPV4_BOOTPROTO:
1250                         len = sprintf(buf, "%s\n",
1251                                       (ha->ip_config.tcp_options &
1252                                        TCPOPT_DHCP_ENABLE) ?
1253                                       "dhcp" : "static");
1254                         break;
1255                 case ISCSI_NET_PARAM_IPV6_ADDR:
1256                         if (iface->iface_num == 0)
1257                                 len = sprintf(buf, "%pI6\n",
1258                                               &ha->ip_config.ipv6_addr0);
1259                         if (iface->iface_num == 1)
1260                                 len = sprintf(buf, "%pI6\n",
1261                                               &ha->ip_config.ipv6_addr1);
1262                         break;
1263                 case ISCSI_NET_PARAM_IPV6_LINKLOCAL:
1264                         len = sprintf(buf, "%pI6\n",
1265                                       &ha->ip_config.ipv6_link_local_addr);
1266                         break;
1267                 case ISCSI_NET_PARAM_IPV6_ROUTER:
1268                         len = sprintf(buf, "%pI6\n",
1269                                       &ha->ip_config.ipv6_default_router_addr);
1270                         break;
1271                 case ISCSI_NET_PARAM_IPV6_ADDR_AUTOCFG:
1272                         pval = (ha->ip_config.ipv6_addl_options &
1273                                 IPV6_ADDOPT_NEIGHBOR_DISCOVERY_ADDR_ENABLE) ?
1274                                 "nd" : "static";
1275
1276                         len = sprintf(buf, "%s\n", pval);
1277                         break;
1278                 case ISCSI_NET_PARAM_IPV6_LINKLOCAL_AUTOCFG:
1279                         pval = (ha->ip_config.ipv6_addl_options &
1280                                 IPV6_ADDOPT_AUTOCONFIG_LINK_LOCAL_ADDR) ?
1281                                 "auto" : "static";
1282
1283                         len = sprintf(buf, "%s\n", pval);
1284                         break;
1285                 case ISCSI_NET_PARAM_VLAN_ID:
1286                         if (iface->iface_type == ISCSI_IFACE_TYPE_IPV4)
1287                                 ival = ha->ip_config.ipv4_vlan_tag &
1288                                        ISCSI_MAX_VLAN_ID;
1289                         else
1290                                 ival = ha->ip_config.ipv6_vlan_tag &
1291                                        ISCSI_MAX_VLAN_ID;
1292
1293                         len = sprintf(buf, "%d\n", ival);
1294                         break;
1295                 case ISCSI_NET_PARAM_VLAN_PRIORITY:
1296                         if (iface->iface_type == ISCSI_IFACE_TYPE_IPV4)
1297                                 ival = (ha->ip_config.ipv4_vlan_tag >> 13) &
1298                                        ISCSI_MAX_VLAN_PRIORITY;
1299                         else
1300                                 ival = (ha->ip_config.ipv6_vlan_tag >> 13) &
1301                                        ISCSI_MAX_VLAN_PRIORITY;
1302
1303                         len = sprintf(buf, "%d\n", ival);
1304                         break;
1305                 case ISCSI_NET_PARAM_VLAN_ENABLED:
1306                         if (iface->iface_type == ISCSI_IFACE_TYPE_IPV4) {
1307                                 OP_STATE(ha->ip_config.ipv4_options,
1308                                          IPOPT_VLAN_TAGGING_ENABLE, pval);
1309                         } else {
1310                                 OP_STATE(ha->ip_config.ipv6_options,
1311                                          IPV6_OPT_VLAN_TAGGING_ENABLE, pval);
1312                         }
1313                         len = sprintf(buf, "%s\n", pval);
1314                         break;
1315                 case ISCSI_NET_PARAM_MTU:
1316                         len = sprintf(buf, "%d\n", ha->ip_config.eth_mtu_size);
1317                         break;
1318                 case ISCSI_NET_PARAM_PORT:
1319                         if (iface->iface_type == ISCSI_IFACE_TYPE_IPV4)
1320                                 len = sprintf(buf, "%d\n",
1321                                               ha->ip_config.ipv4_port);
1322                         else
1323                                 len = sprintf(buf, "%d\n",
1324                                               ha->ip_config.ipv6_port);
1325                         break;
1326                 case ISCSI_NET_PARAM_IPADDR_STATE:
1327                         if (iface->iface_type == ISCSI_IFACE_TYPE_IPV4) {
1328                                 pval = iscsi_get_ipaddress_state_name(
1329                                                 ha->ip_config.ipv4_addr_state);
1330                         } else {
1331                                 if (iface->iface_num == 0)
1332                                         pval = iscsi_get_ipaddress_state_name(
1333                                                 ha->ip_config.ipv6_addr0_state);
1334                                 else if (iface->iface_num == 1)
1335                                         pval = iscsi_get_ipaddress_state_name(
1336                                                 ha->ip_config.ipv6_addr1_state);
1337                         }
1338
1339                         len = sprintf(buf, "%s\n", pval);
1340                         break;
1341                 case ISCSI_NET_PARAM_IPV6_LINKLOCAL_STATE:
1342                         pval = iscsi_get_ipaddress_state_name(
1343                                         ha->ip_config.ipv6_link_local_state);
1344                         len = sprintf(buf, "%s\n", pval);
1345                         break;
1346                 case ISCSI_NET_PARAM_IPV6_ROUTER_STATE:
1347                         pval = iscsi_get_router_state_name(
1348                                       ha->ip_config.ipv6_default_router_state);
1349                         len = sprintf(buf, "%s\n", pval);
1350                         break;
1351                 case ISCSI_NET_PARAM_DELAYED_ACK_EN:
1352                         if (iface->iface_type == ISCSI_IFACE_TYPE_IPV4) {
1353                                 OP_STATE(~ha->ip_config.tcp_options,
1354                                          TCPOPT_DELAYED_ACK_DISABLE, pval);
1355                         } else {
1356                                 OP_STATE(~ha->ip_config.ipv6_tcp_options,
1357                                          IPV6_TCPOPT_DELAYED_ACK_DISABLE, pval);
1358                         }
1359                         len = sprintf(buf, "%s\n", pval);
1360                         break;
1361                 case ISCSI_NET_PARAM_TCP_NAGLE_DISABLE:
1362                         if (iface->iface_type == ISCSI_IFACE_TYPE_IPV4) {
1363                                 OP_STATE(~ha->ip_config.tcp_options,
1364                                          TCPOPT_NAGLE_ALGO_DISABLE, pval);
1365                         } else {
1366                                 OP_STATE(~ha->ip_config.ipv6_tcp_options,
1367                                          IPV6_TCPOPT_NAGLE_ALGO_DISABLE, pval);
1368                         }
1369                         len = sprintf(buf, "%s\n", pval);
1370                         break;
1371                 case ISCSI_NET_PARAM_TCP_WSF_DISABLE:
1372                         if (iface->iface_type == ISCSI_IFACE_TYPE_IPV4) {
1373                                 OP_STATE(~ha->ip_config.tcp_options,
1374                                          TCPOPT_WINDOW_SCALE_DISABLE, pval);
1375                         } else {
1376                                 OP_STATE(~ha->ip_config.ipv6_tcp_options,
1377                                          IPV6_TCPOPT_WINDOW_SCALE_DISABLE,
1378                                          pval);
1379                         }
1380                         len = sprintf(buf, "%s\n", pval);
1381                         break;
1382                 case ISCSI_NET_PARAM_TCP_WSF:
1383                         if (iface->iface_type == ISCSI_IFACE_TYPE_IPV4)
1384                                 len = sprintf(buf, "%d\n",
1385                                               ha->ip_config.tcp_wsf);
1386                         else
1387                                 len = sprintf(buf, "%d\n",
1388                                               ha->ip_config.ipv6_tcp_wsf);
1389                         break;
1390                 case ISCSI_NET_PARAM_TCP_TIMER_SCALE:
1391                         if (iface->iface_type == ISCSI_IFACE_TYPE_IPV4)
1392                                 ival = (ha->ip_config.tcp_options &
1393                                         TCPOPT_TIMER_SCALE) >> 1;
1394                         else
1395                                 ival = (ha->ip_config.ipv6_tcp_options &
1396                                         IPV6_TCPOPT_TIMER_SCALE) >> 1;
1397
1398                         len = sprintf(buf, "%d\n", ival);
1399                         break;
1400                 case ISCSI_NET_PARAM_TCP_TIMESTAMP_EN:
1401                         if (iface->iface_type == ISCSI_IFACE_TYPE_IPV4) {
1402                                 OP_STATE(ha->ip_config.tcp_options,
1403                                          TCPOPT_TIMESTAMP_ENABLE, pval);
1404                         } else {
1405                                 OP_STATE(ha->ip_config.ipv6_tcp_options,
1406                                          IPV6_TCPOPT_TIMESTAMP_EN, pval);
1407                         }
1408                         len = sprintf(buf, "%s\n", pval);
1409                         break;
1410                 case ISCSI_NET_PARAM_CACHE_ID:
1411                         if (iface->iface_type == ISCSI_IFACE_TYPE_IPV4)
1412                                 len = sprintf(buf, "%d\n",
1413                                               ha->ip_config.ipv4_cache_id);
1414                         else
1415                                 len = sprintf(buf, "%d\n",
1416                                               ha->ip_config.ipv6_cache_id);
1417                         break;
1418                 case ISCSI_NET_PARAM_IPV4_DHCP_DNS_ADDR_EN:
1419                         OP_STATE(ha->ip_config.tcp_options,
1420                                  TCPOPT_DNS_SERVER_IP_EN, pval);
1421
1422                         len = sprintf(buf, "%s\n", pval);
1423                         break;
1424                 case ISCSI_NET_PARAM_IPV4_DHCP_SLP_DA_EN:
1425                         OP_STATE(ha->ip_config.tcp_options,
1426                                  TCPOPT_SLP_DA_INFO_EN, pval);
1427
1428                         len = sprintf(buf, "%s\n", pval);
1429                         break;
1430                 case ISCSI_NET_PARAM_IPV4_TOS_EN:
1431                         OP_STATE(ha->ip_config.ipv4_options,
1432                                  IPOPT_IPV4_TOS_EN, pval);
1433
1434                         len = sprintf(buf, "%s\n", pval);
1435                         break;
1436                 case ISCSI_NET_PARAM_IPV4_TOS:
1437                         len = sprintf(buf, "%d\n", ha->ip_config.ipv4_tos);
1438                         break;
1439                 case ISCSI_NET_PARAM_IPV4_GRAT_ARP_EN:
1440                         OP_STATE(ha->ip_config.ipv4_options,
1441                                  IPOPT_GRAT_ARP_EN, pval);
1442
1443                         len = sprintf(buf, "%s\n", pval);
1444                         break;
1445                 case ISCSI_NET_PARAM_IPV4_DHCP_ALT_CLIENT_ID_EN:
1446                         OP_STATE(ha->ip_config.ipv4_options, IPOPT_ALT_CID_EN,
1447                                  pval);
1448
1449                         len = sprintf(buf, "%s\n", pval);
1450                         break;
1451                 case ISCSI_NET_PARAM_IPV4_DHCP_ALT_CLIENT_ID:
1452                         pval = (ha->ip_config.ipv4_alt_cid_len) ?
1453                                (char *)ha->ip_config.ipv4_alt_cid : "";
1454
1455                         len = sprintf(buf, "%s\n", pval);
1456                         break;
1457                 case ISCSI_NET_PARAM_IPV4_DHCP_REQ_VENDOR_ID_EN:
1458                         OP_STATE(ha->ip_config.ipv4_options,
1459                                  IPOPT_REQ_VID_EN, pval);
1460
1461                         len = sprintf(buf, "%s\n", pval);
1462                         break;
1463                 case ISCSI_NET_PARAM_IPV4_DHCP_USE_VENDOR_ID_EN:
1464                         OP_STATE(ha->ip_config.ipv4_options,
1465                                  IPOPT_USE_VID_EN, pval);
1466
1467                         len = sprintf(buf, "%s\n", pval);
1468                         break;
1469                 case ISCSI_NET_PARAM_IPV4_DHCP_VENDOR_ID:
1470                         pval = (ha->ip_config.ipv4_vid_len) ?
1471                                (char *)ha->ip_config.ipv4_vid : "";
1472
1473                         len = sprintf(buf, "%s\n", pval);
1474                         break;
1475                 case ISCSI_NET_PARAM_IPV4_DHCP_LEARN_IQN_EN:
1476                         OP_STATE(ha->ip_config.ipv4_options,
1477                                  IPOPT_LEARN_IQN_EN, pval);
1478
1479                         len = sprintf(buf, "%s\n", pval);
1480                         break;
1481                 case ISCSI_NET_PARAM_IPV4_FRAGMENT_DISABLE:
1482                         OP_STATE(~ha->ip_config.ipv4_options,
1483                                  IPOPT_FRAGMENTATION_DISABLE, pval);
1484
1485                         len = sprintf(buf, "%s\n", pval);
1486                         break;
1487                 case ISCSI_NET_PARAM_IPV4_IN_FORWARD_EN:
1488                         OP_STATE(ha->ip_config.ipv4_options,
1489                                  IPOPT_IN_FORWARD_EN, pval);
1490
1491                         len = sprintf(buf, "%s\n", pval);
1492                         break;
1493                 case ISCSI_NET_PARAM_REDIRECT_EN:
1494                         if (iface->iface_type == ISCSI_IFACE_TYPE_IPV4) {
1495                                 OP_STATE(ha->ip_config.ipv4_options,
1496                                          IPOPT_ARP_REDIRECT_EN, pval);
1497                         } else {
1498                                 OP_STATE(ha->ip_config.ipv6_options,
1499                                          IPV6_OPT_REDIRECT_EN, pval);
1500                         }
1501                         len = sprintf(buf, "%s\n", pval);
1502                         break;
1503                 case ISCSI_NET_PARAM_IPV4_TTL:
1504                         len = sprintf(buf, "%d\n", ha->ip_config.ipv4_ttl);
1505                         break;
1506                 case ISCSI_NET_PARAM_IPV6_GRAT_NEIGHBOR_ADV_EN:
1507                         OP_STATE(ha->ip_config.ipv6_options,
1508                                  IPV6_OPT_GRAT_NEIGHBOR_ADV_EN, pval);
1509
1510                         len = sprintf(buf, "%s\n", pval);
1511                         break;
1512                 case ISCSI_NET_PARAM_IPV6_MLD_EN:
1513                         OP_STATE(ha->ip_config.ipv6_addl_options,
1514                                  IPV6_ADDOPT_MLD_EN, pval);
1515
1516                         len = sprintf(buf, "%s\n", pval);
1517                         break;
1518                 case ISCSI_NET_PARAM_IPV6_FLOW_LABEL:
1519                         len = sprintf(buf, "%u\n", ha->ip_config.ipv6_flow_lbl);
1520                         break;
1521                 case ISCSI_NET_PARAM_IPV6_TRAFFIC_CLASS:
1522                         len = sprintf(buf, "%d\n",
1523                                       ha->ip_config.ipv6_traffic_class);
1524                         break;
1525                 case ISCSI_NET_PARAM_IPV6_HOP_LIMIT:
1526                         len = sprintf(buf, "%d\n",
1527                                       ha->ip_config.ipv6_hop_limit);
1528                         break;
1529                 case ISCSI_NET_PARAM_IPV6_ND_REACHABLE_TMO:
1530                         len = sprintf(buf, "%d\n",
1531                                       ha->ip_config.ipv6_nd_reach_time);
1532                         break;
1533                 case ISCSI_NET_PARAM_IPV6_ND_REXMIT_TIME:
1534                         len = sprintf(buf, "%d\n",
1535                                       ha->ip_config.ipv6_nd_rexmit_timer);
1536                         break;
1537                 case ISCSI_NET_PARAM_IPV6_ND_STALE_TMO:
1538                         len = sprintf(buf, "%d\n",
1539                                       ha->ip_config.ipv6_nd_stale_timeout);
1540                         break;
1541                 case ISCSI_NET_PARAM_IPV6_DUP_ADDR_DETECT_CNT:
1542                         len = sprintf(buf, "%d\n",
1543                                       ha->ip_config.ipv6_dup_addr_detect_count);
1544                         break;
1545                 case ISCSI_NET_PARAM_IPV6_RTR_ADV_LINK_MTU:
1546                         len = sprintf(buf, "%d\n",
1547                                       ha->ip_config.ipv6_gw_advrt_mtu);
1548                         break;
1549                 default:
1550                         len = -ENOSYS;
1551                 }
1552         } else if (param_type == ISCSI_IFACE_PARAM) {
1553                 switch (param) {
1554                 case ISCSI_IFACE_PARAM_DEF_TASKMGMT_TMO:
1555                         len = sprintf(buf, "%d\n", ha->ip_config.def_timeout);
1556                         break;
1557                 case ISCSI_IFACE_PARAM_HDRDGST_EN:
1558                         OP_STATE(ha->ip_config.iscsi_options,
1559                                  ISCSIOPTS_HEADER_DIGEST_EN, pval);
1560
1561                         len = sprintf(buf, "%s\n", pval);
1562                         break;
1563                 case ISCSI_IFACE_PARAM_DATADGST_EN:
1564                         OP_STATE(ha->ip_config.iscsi_options,
1565                                  ISCSIOPTS_DATA_DIGEST_EN, pval);
1566
1567                         len = sprintf(buf, "%s\n", pval);
1568                         break;
1569                 case ISCSI_IFACE_PARAM_IMM_DATA_EN:
1570                         OP_STATE(ha->ip_config.iscsi_options,
1571                                  ISCSIOPTS_IMMEDIATE_DATA_EN, pval);
1572
1573                         len = sprintf(buf, "%s\n", pval);
1574                         break;
1575                 case ISCSI_IFACE_PARAM_INITIAL_R2T_EN:
1576                         OP_STATE(ha->ip_config.iscsi_options,
1577                                  ISCSIOPTS_INITIAL_R2T_EN, pval);
1578
1579                         len = sprintf(buf, "%s\n", pval);
1580                         break;
1581                 case ISCSI_IFACE_PARAM_DATASEQ_INORDER_EN:
1582                         OP_STATE(ha->ip_config.iscsi_options,
1583                                  ISCSIOPTS_DATA_SEQ_INORDER_EN, pval);
1584
1585                         len = sprintf(buf, "%s\n", pval);
1586                         break;
1587                 case ISCSI_IFACE_PARAM_PDU_INORDER_EN:
1588                         OP_STATE(ha->ip_config.iscsi_options,
1589                                  ISCSIOPTS_DATA_PDU_INORDER_EN, pval);
1590
1591                         len = sprintf(buf, "%s\n", pval);
1592                         break;
1593                 case ISCSI_IFACE_PARAM_ERL:
1594                         len = sprintf(buf, "%d\n",
1595                                       (ha->ip_config.iscsi_options &
1596                                        ISCSIOPTS_ERL));
1597                         break;
1598                 case ISCSI_IFACE_PARAM_MAX_RECV_DLENGTH:
1599                         len = sprintf(buf, "%u\n",
1600                                       ha->ip_config.iscsi_max_pdu_size *
1601                                       BYTE_UNITS);
1602                         break;
1603                 case ISCSI_IFACE_PARAM_FIRST_BURST:
1604                         len = sprintf(buf, "%u\n",
1605                                       ha->ip_config.iscsi_first_burst_len *
1606                                       BYTE_UNITS);
1607                         break;
1608                 case ISCSI_IFACE_PARAM_MAX_R2T:
1609                         len = sprintf(buf, "%d\n",
1610                                       ha->ip_config.iscsi_max_outstnd_r2t);
1611                         break;
1612                 case ISCSI_IFACE_PARAM_MAX_BURST:
1613                         len = sprintf(buf, "%u\n",
1614                                       ha->ip_config.iscsi_max_burst_len *
1615                                       BYTE_UNITS);
1616                         break;
1617                 case ISCSI_IFACE_PARAM_CHAP_AUTH_EN:
1618                         OP_STATE(ha->ip_config.iscsi_options,
1619                                  ISCSIOPTS_CHAP_AUTH_EN, pval);
1620
1621                         len = sprintf(buf, "%s\n", pval);
1622                         break;
1623                 case ISCSI_IFACE_PARAM_BIDI_CHAP_EN:
1624                         OP_STATE(ha->ip_config.iscsi_options,
1625                                  ISCSIOPTS_BIDI_CHAP_EN, pval);
1626
1627                         len = sprintf(buf, "%s\n", pval);
1628                         break;
1629                 case ISCSI_IFACE_PARAM_DISCOVERY_AUTH_OPTIONAL:
1630                         OP_STATE(ha->ip_config.iscsi_options,
1631                                  ISCSIOPTS_DISCOVERY_AUTH_EN, pval);
1632
1633                         len = sprintf(buf, "%s\n", pval);
1634                         break;
1635                 case ISCSI_IFACE_PARAM_DISCOVERY_LOGOUT_EN:
1636                         OP_STATE(ha->ip_config.iscsi_options,
1637                                  ISCSIOPTS_DISCOVERY_LOGOUT_EN, pval);
1638
1639                         len = sprintf(buf, "%s\n", pval);
1640                         break;
1641                 case ISCSI_IFACE_PARAM_STRICT_LOGIN_COMP_EN:
1642                         OP_STATE(ha->ip_config.iscsi_options,
1643                                  ISCSIOPTS_STRICT_LOGIN_COMP_EN, pval);
1644
1645                         len = sprintf(buf, "%s\n", pval);
1646                         break;
1647                 case ISCSI_IFACE_PARAM_INITIATOR_NAME:
1648                         len = sprintf(buf, "%s\n", ha->ip_config.iscsi_name);
1649                         break;
1650                 default:
1651                         len = -ENOSYS;
1652                 }
1653         }
1654
1655         return len;
1656 }
1657
1658 static struct iscsi_endpoint *
1659 qla4xxx_ep_connect(struct Scsi_Host *shost, struct sockaddr *dst_addr,
1660                    int non_blocking)
1661 {
1662         int ret;
1663         struct iscsi_endpoint *ep;
1664         struct qla_endpoint *qla_ep;
1665         struct scsi_qla_host *ha;
1666         struct sockaddr_in *addr;
1667         struct sockaddr_in6 *addr6;
1668
1669         if (!shost) {
1670                 ret = -ENXIO;
1671                 pr_err("%s: shost is NULL\n", __func__);
1672                 return ERR_PTR(ret);
1673         }
1674
1675         ha = iscsi_host_priv(shost);
1676         ep = iscsi_create_endpoint(sizeof(struct qla_endpoint));
1677         if (!ep) {
1678                 ret = -ENOMEM;
1679                 return ERR_PTR(ret);
1680         }
1681
1682         qla_ep = ep->dd_data;
1683         memset(qla_ep, 0, sizeof(struct qla_endpoint));
1684         if (dst_addr->sa_family == AF_INET) {
1685                 memcpy(&qla_ep->dst_addr, dst_addr, sizeof(struct sockaddr_in));
1686                 addr = (struct sockaddr_in *)&qla_ep->dst_addr;
1687                 DEBUG2(ql4_printk(KERN_INFO, ha, "%s: %pI4\n", __func__,
1688                                   (char *)&addr->sin_addr));
1689         } else if (dst_addr->sa_family == AF_INET6) {
1690                 memcpy(&qla_ep->dst_addr, dst_addr,
1691                        sizeof(struct sockaddr_in6));
1692                 addr6 = (struct sockaddr_in6 *)&qla_ep->dst_addr;
1693                 DEBUG2(ql4_printk(KERN_INFO, ha, "%s: %pI6\n", __func__,
1694                                   (char *)&addr6->sin6_addr));
1695         } else {
1696                 ql4_printk(KERN_WARNING, ha, "%s: Invalid endpoint\n",
1697                            __func__);
1698         }
1699
1700         qla_ep->host = shost;
1701
1702         return ep;
1703 }
1704
1705 static int qla4xxx_ep_poll(struct iscsi_endpoint *ep, int timeout_ms)
1706 {
1707         struct qla_endpoint *qla_ep;
1708         struct scsi_qla_host *ha;
1709         int ret = 0;
1710
1711         qla_ep = ep->dd_data;
1712         ha = to_qla_host(qla_ep->host);
1713         DEBUG2(pr_info_ratelimited("%s: host: %ld\n", __func__, ha->host_no));
1714
1715         if (adapter_up(ha) && !test_bit(AF_BUILD_DDB_LIST, &ha->flags))
1716                 ret = 1;
1717
1718         return ret;
1719 }
1720
1721 static void qla4xxx_ep_disconnect(struct iscsi_endpoint *ep)
1722 {
1723         struct qla_endpoint *qla_ep;
1724         struct scsi_qla_host *ha;
1725
1726         qla_ep = ep->dd_data;
1727         ha = to_qla_host(qla_ep->host);
1728         DEBUG2(ql4_printk(KERN_INFO, ha, "%s: host: %ld\n", __func__,
1729                           ha->host_no));
1730         iscsi_destroy_endpoint(ep);
1731 }
1732
1733 static int qla4xxx_get_ep_param(struct iscsi_endpoint *ep,
1734                                 enum iscsi_param param,
1735                                 char *buf)
1736 {
1737         struct qla_endpoint *qla_ep = ep->dd_data;
1738         struct sockaddr *dst_addr;
1739         struct scsi_qla_host *ha;
1740
1741         if (!qla_ep)
1742                 return -ENOTCONN;
1743
1744         ha = to_qla_host(qla_ep->host);
1745         DEBUG2(ql4_printk(KERN_INFO, ha, "%s: host: %ld\n", __func__,
1746                           ha->host_no));
1747
1748         switch (param) {
1749         case ISCSI_PARAM_CONN_PORT:
1750         case ISCSI_PARAM_CONN_ADDRESS:
1751                 dst_addr = (struct sockaddr *)&qla_ep->dst_addr;
1752                 if (!dst_addr)
1753                         return -ENOTCONN;
1754
1755                 return iscsi_conn_get_addr_param((struct sockaddr_storage *)
1756                                                  &qla_ep->dst_addr, param, buf);
1757         default:
1758                 return -ENOSYS;
1759         }
1760 }
1761
1762 static void qla4xxx_conn_get_stats(struct iscsi_cls_conn *cls_conn,
1763                                    struct iscsi_stats *stats)
1764 {
1765         struct iscsi_session *sess;
1766         struct iscsi_cls_session *cls_sess;
1767         struct ddb_entry *ddb_entry;
1768         struct scsi_qla_host *ha;
1769         struct ql_iscsi_stats *ql_iscsi_stats;
1770         int stats_size;
1771         int ret;
1772         dma_addr_t iscsi_stats_dma;
1773
1774         cls_sess = iscsi_conn_to_session(cls_conn);
1775         sess = cls_sess->dd_data;
1776         ddb_entry = sess->dd_data;
1777         ha = ddb_entry->ha;
1778
1779         DEBUG2(ql4_printk(KERN_INFO, ha, "%s: host: %ld\n", __func__,
1780                           ha->host_no));
1781         stats_size = PAGE_ALIGN(sizeof(struct ql_iscsi_stats));
1782         /* Allocate memory */
1783         ql_iscsi_stats = dma_alloc_coherent(&ha->pdev->dev, stats_size,
1784                                             &iscsi_stats_dma, GFP_KERNEL);
1785         if (!ql_iscsi_stats) {
1786                 ql4_printk(KERN_ERR, ha,
1787                            "Unable to allocate memory for iscsi stats\n");
1788                 goto exit_get_stats;
1789         }
1790
1791         ret =  qla4xxx_get_mgmt_data(ha, ddb_entry->fw_ddb_index, stats_size,
1792                                      iscsi_stats_dma);
1793         if (ret != QLA_SUCCESS) {
1794                 ql4_printk(KERN_ERR, ha,
1795                            "Unable to retrieve iscsi stats\n");
1796                 goto free_stats;
1797         }
1798
1799         /* octets */
1800         stats->txdata_octets = le64_to_cpu(ql_iscsi_stats->tx_data_octets);
1801         stats->rxdata_octets = le64_to_cpu(ql_iscsi_stats->rx_data_octets);
1802         /* xmit pdus */
1803         stats->noptx_pdus = le32_to_cpu(ql_iscsi_stats->tx_nopout_pdus);
1804         stats->scsicmd_pdus = le32_to_cpu(ql_iscsi_stats->tx_scsi_cmd_pdus);
1805         stats->tmfcmd_pdus = le32_to_cpu(ql_iscsi_stats->tx_tmf_cmd_pdus);
1806         stats->login_pdus = le32_to_cpu(ql_iscsi_stats->tx_login_cmd_pdus);
1807         stats->text_pdus = le32_to_cpu(ql_iscsi_stats->tx_text_cmd_pdus);
1808         stats->dataout_pdus = le32_to_cpu(ql_iscsi_stats->tx_scsi_write_pdus);
1809         stats->logout_pdus = le32_to_cpu(ql_iscsi_stats->tx_logout_cmd_pdus);
1810         stats->snack_pdus = le32_to_cpu(ql_iscsi_stats->tx_snack_req_pdus);
1811         /* recv pdus */
1812         stats->noprx_pdus = le32_to_cpu(ql_iscsi_stats->rx_nopin_pdus);
1813         stats->scsirsp_pdus = le32_to_cpu(ql_iscsi_stats->rx_scsi_resp_pdus);
1814         stats->tmfrsp_pdus = le32_to_cpu(ql_iscsi_stats->rx_tmf_resp_pdus);
1815         stats->textrsp_pdus = le32_to_cpu(ql_iscsi_stats->rx_text_resp_pdus);
1816         stats->datain_pdus = le32_to_cpu(ql_iscsi_stats->rx_scsi_read_pdus);
1817         stats->logoutrsp_pdus =
1818                         le32_to_cpu(ql_iscsi_stats->rx_logout_resp_pdus);
1819         stats->r2t_pdus = le32_to_cpu(ql_iscsi_stats->rx_r2t_pdus);
1820         stats->async_pdus = le32_to_cpu(ql_iscsi_stats->rx_async_pdus);
1821         stats->rjt_pdus = le32_to_cpu(ql_iscsi_stats->rx_reject_pdus);
1822
1823 free_stats:
1824         dma_free_coherent(&ha->pdev->dev, stats_size, ql_iscsi_stats,
1825                           iscsi_stats_dma);
1826 exit_get_stats:
1827         return;
1828 }
1829
1830 static enum blk_eh_timer_return qla4xxx_eh_cmd_timed_out(struct scsi_cmnd *sc)
1831 {
1832         struct iscsi_cls_session *session;
1833         struct iscsi_session *sess;
1834         unsigned long flags;
1835         enum blk_eh_timer_return ret = BLK_EH_NOT_HANDLED;
1836
1837         session = starget_to_session(scsi_target(sc->device));
1838         sess = session->dd_data;
1839
1840         spin_lock_irqsave(&session->lock, flags);
1841         if (session->state == ISCSI_SESSION_FAILED)
1842                 ret = BLK_EH_RESET_TIMER;
1843         spin_unlock_irqrestore(&session->lock, flags);
1844
1845         return ret;
1846 }
1847
1848 static void qla4xxx_set_port_speed(struct Scsi_Host *shost)
1849 {
1850         struct scsi_qla_host *ha = to_qla_host(shost);
1851         struct iscsi_cls_host *ihost = shost->shost_data;
1852         uint32_t speed = ISCSI_PORT_SPEED_UNKNOWN;
1853
1854         qla4xxx_get_firmware_state(ha);
1855
1856         switch (ha->addl_fw_state & 0x0F00) {
1857         case FW_ADDSTATE_LINK_SPEED_10MBPS:
1858                 speed = ISCSI_PORT_SPEED_10MBPS;
1859                 break;
1860         case FW_ADDSTATE_LINK_SPEED_100MBPS:
1861                 speed = ISCSI_PORT_SPEED_100MBPS;
1862                 break;
1863         case FW_ADDSTATE_LINK_SPEED_1GBPS:
1864                 speed = ISCSI_PORT_SPEED_1GBPS;
1865                 break;
1866         case FW_ADDSTATE_LINK_SPEED_10GBPS:
1867                 speed = ISCSI_PORT_SPEED_10GBPS;
1868                 break;
1869         }
1870         ihost->port_speed = speed;
1871 }
1872
1873 static void qla4xxx_set_port_state(struct Scsi_Host *shost)
1874 {
1875         struct scsi_qla_host *ha = to_qla_host(shost);
1876         struct iscsi_cls_host *ihost = shost->shost_data;
1877         uint32_t state = ISCSI_PORT_STATE_DOWN;
1878
1879         if (test_bit(AF_LINK_UP, &ha->flags))
1880                 state = ISCSI_PORT_STATE_UP;
1881
1882         ihost->port_state = state;
1883 }
1884
1885 static int qla4xxx_host_get_param(struct Scsi_Host *shost,
1886                                   enum iscsi_host_param param, char *buf)
1887 {
1888         struct scsi_qla_host *ha = to_qla_host(shost);
1889         int len;
1890
1891         switch (param) {
1892         case ISCSI_HOST_PARAM_HWADDRESS:
1893                 len = sysfs_format_mac(buf, ha->my_mac, MAC_ADDR_LEN);
1894                 break;
1895         case ISCSI_HOST_PARAM_IPADDRESS:
1896                 len = sprintf(buf, "%pI4\n", &ha->ip_config.ip_address);
1897                 break;
1898         case ISCSI_HOST_PARAM_INITIATOR_NAME:
1899                 len = sprintf(buf, "%s\n", ha->name_string);
1900                 break;
1901         case ISCSI_HOST_PARAM_PORT_STATE:
1902                 qla4xxx_set_port_state(shost);
1903                 len = sprintf(buf, "%s\n", iscsi_get_port_state_name(shost));
1904                 break;
1905         case ISCSI_HOST_PARAM_PORT_SPEED:
1906                 qla4xxx_set_port_speed(shost);
1907                 len = sprintf(buf, "%s\n", iscsi_get_port_speed_name(shost));
1908                 break;
1909         default:
1910                 return -ENOSYS;
1911         }
1912
1913         return len;
1914 }
1915
1916 static void qla4xxx_create_ipv4_iface(struct scsi_qla_host *ha)
1917 {
1918         if (ha->iface_ipv4)
1919                 return;
1920
1921         /* IPv4 */
1922         ha->iface_ipv4 = iscsi_create_iface(ha->host,
1923                                             &qla4xxx_iscsi_transport,
1924                                             ISCSI_IFACE_TYPE_IPV4, 0, 0);
1925         if (!ha->iface_ipv4)
1926                 ql4_printk(KERN_ERR, ha, "Could not create IPv4 iSCSI "
1927                            "iface0.\n");
1928 }
1929
1930 static void qla4xxx_create_ipv6_iface(struct scsi_qla_host *ha)
1931 {
1932         if (!ha->iface_ipv6_0)
1933                 /* IPv6 iface-0 */
1934                 ha->iface_ipv6_0 = iscsi_create_iface(ha->host,
1935                                                       &qla4xxx_iscsi_transport,
1936                                                       ISCSI_IFACE_TYPE_IPV6, 0,
1937                                                       0);
1938         if (!ha->iface_ipv6_0)
1939                 ql4_printk(KERN_ERR, ha, "Could not create IPv6 iSCSI "
1940                            "iface0.\n");
1941
1942         if (!ha->iface_ipv6_1)
1943                 /* IPv6 iface-1 */
1944                 ha->iface_ipv6_1 = iscsi_create_iface(ha->host,
1945                                                       &qla4xxx_iscsi_transport,
1946                                                       ISCSI_IFACE_TYPE_IPV6, 1,
1947                                                       0);
1948         if (!ha->iface_ipv6_1)
1949                 ql4_printk(KERN_ERR, ha, "Could not create IPv6 iSCSI "
1950                            "iface1.\n");
1951 }
1952
1953 static void qla4xxx_create_ifaces(struct scsi_qla_host *ha)
1954 {
1955         if (ha->ip_config.ipv4_options & IPOPT_IPV4_PROTOCOL_ENABLE)
1956                 qla4xxx_create_ipv4_iface(ha);
1957
1958         if (ha->ip_config.ipv6_options & IPV6_OPT_IPV6_PROTOCOL_ENABLE)
1959                 qla4xxx_create_ipv6_iface(ha);
1960 }
1961
1962 static void qla4xxx_destroy_ipv4_iface(struct scsi_qla_host *ha)
1963 {
1964         if (ha->iface_ipv4) {
1965                 iscsi_destroy_iface(ha->iface_ipv4);
1966                 ha->iface_ipv4 = NULL;
1967         }
1968 }
1969
1970 static void qla4xxx_destroy_ipv6_iface(struct scsi_qla_host *ha)
1971 {
1972         if (ha->iface_ipv6_0) {
1973                 iscsi_destroy_iface(ha->iface_ipv6_0);
1974                 ha->iface_ipv6_0 = NULL;
1975         }
1976         if (ha->iface_ipv6_1) {
1977                 iscsi_destroy_iface(ha->iface_ipv6_1);
1978                 ha->iface_ipv6_1 = NULL;
1979         }
1980 }
1981
1982 static void qla4xxx_destroy_ifaces(struct scsi_qla_host *ha)
1983 {
1984         qla4xxx_destroy_ipv4_iface(ha);
1985         qla4xxx_destroy_ipv6_iface(ha);
1986 }
1987
1988 static void qla4xxx_set_ipv6(struct scsi_qla_host *ha,
1989                              struct iscsi_iface_param_info *iface_param,
1990                              struct addr_ctrl_blk *init_fw_cb)
1991 {
1992         /*
1993          * iface_num 0 is valid for IPv6 Addr, linklocal, router, autocfg.
1994          * iface_num 1 is valid only for IPv6 Addr.
1995          */
1996         switch (iface_param->param) {
1997         case ISCSI_NET_PARAM_IPV6_ADDR:
1998                 if (iface_param->iface_num & 0x1)
1999                         /* IPv6 Addr 1 */
2000                         memcpy(init_fw_cb->ipv6_addr1, iface_param->value,
2001                                sizeof(init_fw_cb->ipv6_addr1));
2002                 else
2003                         /* IPv6 Addr 0 */
2004                         memcpy(init_fw_cb->ipv6_addr0, iface_param->value,
2005                                sizeof(init_fw_cb->ipv6_addr0));
2006                 break;
2007         case ISCSI_NET_PARAM_IPV6_LINKLOCAL:
2008                 if (iface_param->iface_num & 0x1)
2009                         break;
2010                 memcpy(init_fw_cb->ipv6_if_id, &iface_param->value[8],
2011                        sizeof(init_fw_cb->ipv6_if_id));
2012                 break;
2013         case ISCSI_NET_PARAM_IPV6_ROUTER:
2014                 if (iface_param->iface_num & 0x1)
2015                         break;
2016                 memcpy(init_fw_cb->ipv6_dflt_rtr_addr, iface_param->value,
2017                        sizeof(init_fw_cb->ipv6_dflt_rtr_addr));
2018                 break;
2019         case ISCSI_NET_PARAM_IPV6_ADDR_AUTOCFG:
2020                 /* Autocfg applies to even interface */
2021                 if (iface_param->iface_num & 0x1)
2022                         break;
2023
2024                 if (iface_param->value[0] == ISCSI_IPV6_AUTOCFG_DISABLE)
2025                         init_fw_cb->ipv6_addtl_opts &=
2026                                 cpu_to_le16(
2027                                   ~IPV6_ADDOPT_NEIGHBOR_DISCOVERY_ADDR_ENABLE);
2028                 else if (iface_param->value[0] == ISCSI_IPV6_AUTOCFG_ND_ENABLE)
2029                         init_fw_cb->ipv6_addtl_opts |=
2030                                 cpu_to_le16(
2031                                   IPV6_ADDOPT_NEIGHBOR_DISCOVERY_ADDR_ENABLE);
2032                 else
2033                         ql4_printk(KERN_ERR, ha,
2034                                    "Invalid autocfg setting for IPv6 addr\n");
2035                 break;
2036         case ISCSI_NET_PARAM_IPV6_LINKLOCAL_AUTOCFG:
2037                 /* Autocfg applies to even interface */
2038                 if (iface_param->iface_num & 0x1)
2039                         break;
2040
2041                 if (iface_param->value[0] ==
2042                     ISCSI_IPV6_LINKLOCAL_AUTOCFG_ENABLE)
2043                         init_fw_cb->ipv6_addtl_opts |= cpu_to_le16(
2044                                         IPV6_ADDOPT_AUTOCONFIG_LINK_LOCAL_ADDR);
2045                 else if (iface_param->value[0] ==
2046                          ISCSI_IPV6_LINKLOCAL_AUTOCFG_DISABLE)
2047                         init_fw_cb->ipv6_addtl_opts &= cpu_to_le16(
2048                                        ~IPV6_ADDOPT_AUTOCONFIG_LINK_LOCAL_ADDR);
2049                 else
2050                         ql4_printk(KERN_ERR, ha,
2051                                    "Invalid autocfg setting for IPv6 linklocal addr\n");
2052                 break;
2053         case ISCSI_NET_PARAM_IPV6_ROUTER_AUTOCFG:
2054                 /* Autocfg applies to even interface */
2055                 if (iface_param->iface_num & 0x1)
2056                         break;
2057
2058                 if (iface_param->value[0] == ISCSI_IPV6_ROUTER_AUTOCFG_ENABLE)
2059                         memset(init_fw_cb->ipv6_dflt_rtr_addr, 0,
2060                                sizeof(init_fw_cb->ipv6_dflt_rtr_addr));
2061                 break;
2062         case ISCSI_NET_PARAM_IFACE_ENABLE:
2063                 if (iface_param->value[0] == ISCSI_IFACE_ENABLE) {
2064                         init_fw_cb->ipv6_opts |=
2065                                 cpu_to_le16(IPV6_OPT_IPV6_PROTOCOL_ENABLE);
2066                         qla4xxx_create_ipv6_iface(ha);
2067                 } else {
2068                         init_fw_cb->ipv6_opts &=
2069                                 cpu_to_le16(~IPV6_OPT_IPV6_PROTOCOL_ENABLE &
2070                                             0xFFFF);
2071                         qla4xxx_destroy_ipv6_iface(ha);
2072                 }
2073                 break;
2074         case ISCSI_NET_PARAM_VLAN_TAG:
2075                 if (iface_param->len != sizeof(init_fw_cb->ipv6_vlan_tag))
2076                         break;
2077                 init_fw_cb->ipv6_vlan_tag =
2078                                 cpu_to_be16(*(uint16_t *)iface_param->value);
2079                 break;
2080         case ISCSI_NET_PARAM_VLAN_ENABLED:
2081                 if (iface_param->value[0] == ISCSI_VLAN_ENABLE)
2082                         init_fw_cb->ipv6_opts |=
2083                                 cpu_to_le16(IPV6_OPT_VLAN_TAGGING_ENABLE);
2084                 else
2085                         init_fw_cb->ipv6_opts &=
2086                                 cpu_to_le16(~IPV6_OPT_VLAN_TAGGING_ENABLE);
2087                 break;
2088         case ISCSI_NET_PARAM_MTU:
2089                 init_fw_cb->eth_mtu_size =
2090                                 cpu_to_le16(*(uint16_t *)iface_param->value);
2091                 break;
2092         case ISCSI_NET_PARAM_PORT:
2093                 /* Autocfg applies to even interface */
2094                 if (iface_param->iface_num & 0x1)
2095                         break;
2096
2097                 init_fw_cb->ipv6_port =
2098                                 cpu_to_le16(*(uint16_t *)iface_param->value);
2099                 break;
2100         case ISCSI_NET_PARAM_DELAYED_ACK_EN:
2101                 if (iface_param->iface_num & 0x1)
2102                         break;
2103                 if (iface_param->value[0] == ISCSI_NET_PARAM_DISABLE)
2104                         init_fw_cb->ipv6_tcp_opts |=
2105                                 cpu_to_le16(IPV6_TCPOPT_DELAYED_ACK_DISABLE);
2106                 else
2107                         init_fw_cb->ipv6_tcp_opts &=
2108                                 cpu_to_le16(~IPV6_TCPOPT_DELAYED_ACK_DISABLE &
2109                                             0xFFFF);
2110                 break;
2111         case ISCSI_NET_PARAM_TCP_NAGLE_DISABLE:
2112                 if (iface_param->iface_num & 0x1)
2113                         break;
2114                 if (iface_param->value[0] == ISCSI_NET_PARAM_DISABLE)
2115                         init_fw_cb->ipv6_tcp_opts |=
2116                                 cpu_to_le16(IPV6_TCPOPT_NAGLE_ALGO_DISABLE);
2117                 else
2118                         init_fw_cb->ipv6_tcp_opts &=
2119                                 cpu_to_le16(~IPV6_TCPOPT_NAGLE_ALGO_DISABLE);
2120                 break;
2121         case ISCSI_NET_PARAM_TCP_WSF_DISABLE:
2122                 if (iface_param->iface_num & 0x1)
2123                         break;
2124                 if (iface_param->value[0] == ISCSI_NET_PARAM_DISABLE)
2125                         init_fw_cb->ipv6_tcp_opts |=
2126                                 cpu_to_le16(IPV6_TCPOPT_WINDOW_SCALE_DISABLE);
2127                 else
2128                         init_fw_cb->ipv6_tcp_opts &=
2129                                 cpu_to_le16(~IPV6_TCPOPT_WINDOW_SCALE_DISABLE);
2130                 break;
2131         case ISCSI_NET_PARAM_TCP_WSF:
2132                 if (iface_param->iface_num & 0x1)
2133                         break;
2134                 init_fw_cb->ipv6_tcp_wsf = iface_param->value[0];
2135                 break;
2136         case ISCSI_NET_PARAM_TCP_TIMER_SCALE:
2137                 if (iface_param->iface_num & 0x1)
2138                         break;
2139                 init_fw_cb->ipv6_tcp_opts &=
2140                                         cpu_to_le16(~IPV6_TCPOPT_TIMER_SCALE);
2141                 init_fw_cb->ipv6_tcp_opts |=
2142                                 cpu_to_le16((iface_param->value[0] << 1) &
2143                                             IPV6_TCPOPT_TIMER_SCALE);
2144                 break;
2145         case ISCSI_NET_PARAM_TCP_TIMESTAMP_EN:
2146                 if (iface_param->iface_num & 0x1)
2147                         break;
2148                 if (iface_param->value[0] == ISCSI_NET_PARAM_ENABLE)
2149                         init_fw_cb->ipv6_tcp_opts |=
2150                                 cpu_to_le16(IPV6_TCPOPT_TIMESTAMP_EN);
2151                 else
2152                         init_fw_cb->ipv6_tcp_opts &=
2153                                 cpu_to_le16(~IPV6_TCPOPT_TIMESTAMP_EN);
2154                 break;
2155         case ISCSI_NET_PARAM_IPV6_GRAT_NEIGHBOR_ADV_EN:
2156                 if (iface_param->iface_num & 0x1)
2157                         break;
2158                 if (iface_param->value[0] == ISCSI_NET_PARAM_ENABLE)
2159                         init_fw_cb->ipv6_opts |=
2160                                 cpu_to_le16(IPV6_OPT_GRAT_NEIGHBOR_ADV_EN);
2161                 else
2162                         init_fw_cb->ipv6_opts &=
2163                                 cpu_to_le16(~IPV6_OPT_GRAT_NEIGHBOR_ADV_EN);
2164                 break;
2165         case ISCSI_NET_PARAM_REDIRECT_EN:
2166                 if (iface_param->iface_num & 0x1)
2167                         break;
2168                 if (iface_param->value[0] == ISCSI_NET_PARAM_ENABLE)
2169                         init_fw_cb->ipv6_opts |=
2170                                 cpu_to_le16(IPV6_OPT_REDIRECT_EN);
2171                 else
2172                         init_fw_cb->ipv6_opts &=
2173                                 cpu_to_le16(~IPV6_OPT_REDIRECT_EN);
2174                 break;
2175         case ISCSI_NET_PARAM_IPV6_MLD_EN:
2176                 if (iface_param->iface_num & 0x1)
2177                         break;
2178                 if (iface_param->value[0] == ISCSI_NET_PARAM_ENABLE)
2179                         init_fw_cb->ipv6_addtl_opts |=
2180                                 cpu_to_le16(IPV6_ADDOPT_MLD_EN);
2181                 else
2182                         init_fw_cb->ipv6_addtl_opts &=
2183                                 cpu_to_le16(~IPV6_ADDOPT_MLD_EN);
2184                 break;
2185         case ISCSI_NET_PARAM_IPV6_FLOW_LABEL:
2186                 if (iface_param->iface_num & 0x1)
2187                         break;
2188                 init_fw_cb->ipv6_flow_lbl =
2189                                 cpu_to_le16(*(uint16_t *)iface_param->value);
2190                 break;
2191         case ISCSI_NET_PARAM_IPV6_TRAFFIC_CLASS:
2192                 if (iface_param->iface_num & 0x1)
2193                         break;
2194                 init_fw_cb->ipv6_traffic_class = iface_param->value[0];
2195                 break;
2196         case ISCSI_NET_PARAM_IPV6_HOP_LIMIT:
2197                 if (iface_param->iface_num & 0x1)
2198                         break;
2199                 init_fw_cb->ipv6_hop_limit = iface_param->value[0];
2200                 break;
2201         case ISCSI_NET_PARAM_IPV6_ND_REACHABLE_TMO:
2202                 if (iface_param->iface_num & 0x1)
2203                         break;
2204                 init_fw_cb->ipv6_nd_reach_time =
2205                                 cpu_to_le32(*(uint32_t *)iface_param->value);
2206                 break;
2207         case ISCSI_NET_PARAM_IPV6_ND_REXMIT_TIME:
2208                 if (iface_param->iface_num & 0x1)
2209                         break;
2210                 init_fw_cb->ipv6_nd_rexmit_timer =
2211                                 cpu_to_le32(*(uint32_t *)iface_param->value);
2212                 break;
2213         case ISCSI_NET_PARAM_IPV6_ND_STALE_TMO:
2214                 if (iface_param->iface_num & 0x1)
2215                         break;
2216                 init_fw_cb->ipv6_nd_stale_timeout =
2217                                 cpu_to_le32(*(uint32_t *)iface_param->value);
2218                 break;
2219         case ISCSI_NET_PARAM_IPV6_DUP_ADDR_DETECT_CNT:
2220                 if (iface_param->iface_num & 0x1)
2221                         break;
2222                 init_fw_cb->ipv6_dup_addr_detect_count = iface_param->value[0];
2223                 break;
2224         case ISCSI_NET_PARAM_IPV6_RTR_ADV_LINK_MTU:
2225                 if (iface_param->iface_num & 0x1)
2226                         break;
2227                 init_fw_cb->ipv6_gw_advrt_mtu =
2228                                 cpu_to_le32(*(uint32_t *)iface_param->value);
2229                 break;
2230         default:
2231                 ql4_printk(KERN_ERR, ha, "Unknown IPv6 param = %d\n",
2232                            iface_param->param);
2233                 break;
2234         }
2235 }
2236
2237 static void qla4xxx_set_ipv4(struct scsi_qla_host *ha,
2238                              struct iscsi_iface_param_info *iface_param,
2239                              struct addr_ctrl_blk *init_fw_cb)
2240 {
2241         switch (iface_param->param) {
2242         case ISCSI_NET_PARAM_IPV4_ADDR:
2243                 memcpy(init_fw_cb->ipv4_addr, iface_param->value,
2244                        sizeof(init_fw_cb->ipv4_addr));
2245                 break;
2246         case ISCSI_NET_PARAM_IPV4_SUBNET:
2247                 memcpy(init_fw_cb->ipv4_subnet, iface_param->value,
2248                        sizeof(init_fw_cb->ipv4_subnet));
2249                 break;
2250         case ISCSI_NET_PARAM_IPV4_GW:
2251                 memcpy(init_fw_cb->ipv4_gw_addr, iface_param->value,
2252                        sizeof(init_fw_cb->ipv4_gw_addr));
2253                 break;
2254         case ISCSI_NET_PARAM_IPV4_BOOTPROTO:
2255                 if (iface_param->value[0] == ISCSI_BOOTPROTO_DHCP)
2256                         init_fw_cb->ipv4_tcp_opts |=
2257                                         cpu_to_le16(TCPOPT_DHCP_ENABLE);
2258                 else if (iface_param->value[0] == ISCSI_BOOTPROTO_STATIC)
2259                         init_fw_cb->ipv4_tcp_opts &=
2260                                         cpu_to_le16(~TCPOPT_DHCP_ENABLE);
2261                 else
2262                         ql4_printk(KERN_ERR, ha, "Invalid IPv4 bootproto\n");
2263                 break;
2264         case ISCSI_NET_PARAM_IFACE_ENABLE:
2265                 if (iface_param->value[0] == ISCSI_IFACE_ENABLE) {
2266                         init_fw_cb->ipv4_ip_opts |=
2267                                 cpu_to_le16(IPOPT_IPV4_PROTOCOL_ENABLE);
2268                         qla4xxx_create_ipv4_iface(ha);
2269                 } else {
2270                         init_fw_cb->ipv4_ip_opts &=
2271                                 cpu_to_le16(~IPOPT_IPV4_PROTOCOL_ENABLE &
2272                                             0xFFFF);
2273                         qla4xxx_destroy_ipv4_iface(ha);
2274                 }
2275                 break;
2276         case ISCSI_NET_PARAM_VLAN_TAG:
2277                 if (iface_param->len != sizeof(init_fw_cb->ipv4_vlan_tag))
2278                         break;
2279                 init_fw_cb->ipv4_vlan_tag =
2280                                 cpu_to_be16(*(uint16_t *)iface_param->value);
2281                 break;
2282         case ISCSI_NET_PARAM_VLAN_ENABLED:
2283                 if (iface_param->value[0] == ISCSI_VLAN_ENABLE)
2284                         init_fw_cb->ipv4_ip_opts |=
2285                                         cpu_to_le16(IPOPT_VLAN_TAGGING_ENABLE);
2286                 else
2287                         init_fw_cb->ipv4_ip_opts &=
2288                                         cpu_to_le16(~IPOPT_VLAN_TAGGING_ENABLE);
2289                 break;
2290         case ISCSI_NET_PARAM_MTU:
2291                 init_fw_cb->eth_mtu_size =
2292                                 cpu_to_le16(*(uint16_t *)iface_param->value);
2293                 break;
2294         case ISCSI_NET_PARAM_PORT:
2295                 init_fw_cb->ipv4_port =
2296                                 cpu_to_le16(*(uint16_t *)iface_param->value);
2297                 break;
2298         case ISCSI_NET_PARAM_DELAYED_ACK_EN:
2299                 if (iface_param->iface_num & 0x1)
2300                         break;
2301                 if (iface_param->value[0] == ISCSI_NET_PARAM_DISABLE)
2302                         init_fw_cb->ipv4_tcp_opts |=
2303                                 cpu_to_le16(TCPOPT_DELAYED_ACK_DISABLE);
2304                 else
2305                         init_fw_cb->ipv4_tcp_opts &=
2306                                 cpu_to_le16(~TCPOPT_DELAYED_ACK_DISABLE &
2307                                             0xFFFF);
2308                 break;
2309         case ISCSI_NET_PARAM_TCP_NAGLE_DISABLE:
2310                 if (iface_param->iface_num & 0x1)
2311                         break;
2312                 if (iface_param->value[0] == ISCSI_NET_PARAM_DISABLE)
2313                         init_fw_cb->ipv4_tcp_opts |=
2314                                 cpu_to_le16(TCPOPT_NAGLE_ALGO_DISABLE);
2315                 else
2316                         init_fw_cb->ipv4_tcp_opts &=
2317                                 cpu_to_le16(~TCPOPT_NAGLE_ALGO_DISABLE);
2318                 break;
2319         case ISCSI_NET_PARAM_TCP_WSF_DISABLE:
2320                 if (iface_param->iface_num & 0x1)
2321                         break;
2322                 if (iface_param->value[0] == ISCSI_NET_PARAM_DISABLE)
2323                         init_fw_cb->ipv4_tcp_opts |=
2324                                 cpu_to_le16(TCPOPT_WINDOW_SCALE_DISABLE);
2325                 else
2326                         init_fw_cb->ipv4_tcp_opts &=
2327                                 cpu_to_le16(~TCPOPT_WINDOW_SCALE_DISABLE);
2328                 break;
2329         case ISCSI_NET_PARAM_TCP_WSF:
2330                 if (iface_param->iface_num & 0x1)
2331                         break;
2332                 init_fw_cb->ipv4_tcp_wsf = iface_param->value[0];
2333                 break;
2334         case ISCSI_NET_PARAM_TCP_TIMER_SCALE:
2335                 if (iface_param->iface_num & 0x1)
2336                         break;
2337                 init_fw_cb->ipv4_tcp_opts &= cpu_to_le16(~TCPOPT_TIMER_SCALE);
2338                 init_fw_cb->ipv4_tcp_opts |=
2339                                 cpu_to_le16((iface_param->value[0] << 1) &
2340                                             TCPOPT_TIMER_SCALE);
2341                 break;
2342         case ISCSI_NET_PARAM_TCP_TIMESTAMP_EN:
2343                 if (iface_param->iface_num & 0x1)
2344                         break;
2345                 if (iface_param->value[0] == ISCSI_NET_PARAM_ENABLE)
2346                         init_fw_cb->ipv4_tcp_opts |=
2347                                 cpu_to_le16(TCPOPT_TIMESTAMP_ENABLE);
2348                 else
2349                         init_fw_cb->ipv4_tcp_opts &=
2350                                 cpu_to_le16(~TCPOPT_TIMESTAMP_ENABLE);
2351                 break;
2352         case ISCSI_NET_PARAM_IPV4_DHCP_DNS_ADDR_EN:
2353                 if (iface_param->iface_num & 0x1)
2354                         break;
2355                 if (iface_param->value[0] == ISCSI_NET_PARAM_ENABLE)
2356                         init_fw_cb->ipv4_tcp_opts |=
2357                                 cpu_to_le16(TCPOPT_DNS_SERVER_IP_EN);
2358                 else
2359                         init_fw_cb->ipv4_tcp_opts &=
2360                                 cpu_to_le16(~TCPOPT_DNS_SERVER_IP_EN);
2361                 break;
2362         case ISCSI_NET_PARAM_IPV4_DHCP_SLP_DA_EN:
2363                 if (iface_param->iface_num & 0x1)
2364                         break;
2365                 if (iface_param->value[0] == ISCSI_NET_PARAM_ENABLE)
2366                         init_fw_cb->ipv4_tcp_opts |=
2367                                 cpu_to_le16(TCPOPT_SLP_DA_INFO_EN);
2368                 else
2369                         init_fw_cb->ipv4_tcp_opts &=
2370                                 cpu_to_le16(~TCPOPT_SLP_DA_INFO_EN);
2371                 break;
2372         case ISCSI_NET_PARAM_IPV4_TOS_EN:
2373                 if (iface_param->iface_num & 0x1)
2374                         break;
2375                 if (iface_param->value[0] == ISCSI_NET_PARAM_ENABLE)
2376                         init_fw_cb->ipv4_ip_opts |=
2377                                 cpu_to_le16(IPOPT_IPV4_TOS_EN);
2378                 else
2379                         init_fw_cb->ipv4_ip_opts &=
2380                                 cpu_to_le16(~IPOPT_IPV4_TOS_EN);
2381                 break;
2382         case ISCSI_NET_PARAM_IPV4_TOS:
2383                 if (iface_param->iface_num & 0x1)
2384                         break;
2385                 init_fw_cb->ipv4_tos = iface_param->value[0];
2386                 break;
2387         case ISCSI_NET_PARAM_IPV4_GRAT_ARP_EN:
2388                 if (iface_param->iface_num & 0x1)
2389                         break;
2390                 if (iface_param->value[0] == ISCSI_NET_PARAM_ENABLE)
2391                         init_fw_cb->ipv4_ip_opts |=
2392                                         cpu_to_le16(IPOPT_GRAT_ARP_EN);
2393                 else
2394                         init_fw_cb->ipv4_ip_opts &=
2395                                         cpu_to_le16(~IPOPT_GRAT_ARP_EN);
2396                 break;
2397         case ISCSI_NET_PARAM_IPV4_DHCP_ALT_CLIENT_ID_EN:
2398                 if (iface_param->iface_num & 0x1)
2399                         break;
2400                 if (iface_param->value[0] == ISCSI_NET_PARAM_ENABLE)
2401                         init_fw_cb->ipv4_ip_opts |=
2402                                 cpu_to_le16(IPOPT_ALT_CID_EN);
2403                 else
2404                         init_fw_cb->ipv4_ip_opts &=
2405                                 cpu_to_le16(~IPOPT_ALT_CID_EN);
2406                 break;
2407         case ISCSI_NET_PARAM_IPV4_DHCP_ALT_CLIENT_ID:
2408                 if (iface_param->iface_num & 0x1)
2409                         break;
2410                 memcpy(init_fw_cb->ipv4_dhcp_alt_cid, iface_param->value,
2411                        (sizeof(init_fw_cb->ipv4_dhcp_alt_cid) - 1));
2412                 init_fw_cb->ipv4_dhcp_alt_cid_len =
2413                                         strlen(init_fw_cb->ipv4_dhcp_alt_cid);
2414                 break;
2415         case ISCSI_NET_PARAM_IPV4_DHCP_REQ_VENDOR_ID_EN:
2416                 if (iface_param->iface_num & 0x1)
2417                         break;
2418                 if (iface_param->value[0] == ISCSI_NET_PARAM_ENABLE)
2419                         init_fw_cb->ipv4_ip_opts |=
2420                                         cpu_to_le16(IPOPT_REQ_VID_EN);
2421                 else
2422                         init_fw_cb->ipv4_ip_opts &=
2423                                         cpu_to_le16(~IPOPT_REQ_VID_EN);
2424                 break;
2425         case ISCSI_NET_PARAM_IPV4_DHCP_USE_VENDOR_ID_EN:
2426                 if (iface_param->iface_num & 0x1)
2427                         break;
2428                 if (iface_param->value[0] == ISCSI_NET_PARAM_ENABLE)
2429                         init_fw_cb->ipv4_ip_opts |=
2430                                         cpu_to_le16(IPOPT_USE_VID_EN);
2431                 else
2432                         init_fw_cb->ipv4_ip_opts &=
2433                                         cpu_to_le16(~IPOPT_USE_VID_EN);
2434                 break;
2435         case ISCSI_NET_PARAM_IPV4_DHCP_VENDOR_ID:
2436                 if (iface_param->iface_num & 0x1)
2437                         break;
2438                 memcpy(init_fw_cb->ipv4_dhcp_vid, iface_param->value,
2439                        (sizeof(init_fw_cb->ipv4_dhcp_vid) - 1));
2440                 init_fw_cb->ipv4_dhcp_vid_len =
2441                                         strlen(init_fw_cb->ipv4_dhcp_vid);
2442                 break;
2443         case ISCSI_NET_PARAM_IPV4_DHCP_LEARN_IQN_EN:
2444                 if (iface_param->iface_num & 0x1)
2445                         break;
2446                 if (iface_param->value[0] == ISCSI_NET_PARAM_ENABLE)
2447                         init_fw_cb->ipv4_ip_opts |=
2448                                         cpu_to_le16(IPOPT_LEARN_IQN_EN);
2449                 else
2450                         init_fw_cb->ipv4_ip_opts &=
2451                                         cpu_to_le16(~IPOPT_LEARN_IQN_EN);
2452                 break;
2453         case ISCSI_NET_PARAM_IPV4_FRAGMENT_DISABLE:
2454                 if (iface_param->iface_num & 0x1)
2455                         break;
2456                 if (iface_param->value[0] == ISCSI_NET_PARAM_DISABLE)
2457                         init_fw_cb->ipv4_ip_opts |=
2458                                 cpu_to_le16(IPOPT_FRAGMENTATION_DISABLE);
2459                 else
2460                         init_fw_cb->ipv4_ip_opts &=
2461                                 cpu_to_le16(~IPOPT_FRAGMENTATION_DISABLE);
2462                 break;
2463         case ISCSI_NET_PARAM_IPV4_IN_FORWARD_EN:
2464                 if (iface_param->iface_num & 0x1)
2465                         break;
2466                 if (iface_param->value[0] == ISCSI_NET_PARAM_ENABLE)
2467                         init_fw_cb->ipv4_ip_opts |=
2468                                 cpu_to_le16(IPOPT_IN_FORWARD_EN);
2469                 else
2470                         init_fw_cb->ipv4_ip_opts &=
2471                                 cpu_to_le16(~IPOPT_IN_FORWARD_EN);
2472                 break;
2473         case ISCSI_NET_PARAM_REDIRECT_EN:
2474                 if (iface_param->iface_num & 0x1)
2475                         break;
2476                 if (iface_param->value[0] == ISCSI_NET_PARAM_ENABLE)
2477                         init_fw_cb->ipv4_ip_opts |=
2478                                 cpu_to_le16(IPOPT_ARP_REDIRECT_EN);
2479                 else
2480                         init_fw_cb->ipv4_ip_opts &=
2481                                 cpu_to_le16(~IPOPT_ARP_REDIRECT_EN);
2482                 break;
2483         case ISCSI_NET_PARAM_IPV4_TTL:
2484                 if (iface_param->iface_num & 0x1)
2485                         break;
2486                 init_fw_cb->ipv4_ttl = iface_param->value[0];
2487                 break;
2488         default:
2489                 ql4_printk(KERN_ERR, ha, "Unknown IPv4 param = %d\n",
2490                            iface_param->param);
2491                 break;
2492         }
2493 }
2494
2495 static void qla4xxx_set_iscsi_param(struct scsi_qla_host *ha,
2496                                     struct iscsi_iface_param_info *iface_param,
2497                                     struct addr_ctrl_blk *init_fw_cb)
2498 {
2499         switch (iface_param->param) {
2500         case ISCSI_IFACE_PARAM_DEF_TASKMGMT_TMO:
2501                 if (iface_param->iface_num & 0x1)
2502                         break;
2503                 init_fw_cb->def_timeout =
2504                                 cpu_to_le16(*(uint16_t *)iface_param->value);
2505                 break;
2506         case ISCSI_IFACE_PARAM_HDRDGST_EN:
2507                 if (iface_param->iface_num & 0x1)
2508                         break;
2509                 if (iface_param->value[0] == ISCSI_NET_PARAM_ENABLE)
2510                         init_fw_cb->iscsi_opts |=
2511                                 cpu_to_le16(ISCSIOPTS_HEADER_DIGEST_EN);
2512                 else
2513                         init_fw_cb->iscsi_opts &=
2514                                 cpu_to_le16(~ISCSIOPTS_HEADER_DIGEST_EN);
2515                 break;
2516         case ISCSI_IFACE_PARAM_DATADGST_EN:
2517                 if (iface_param->iface_num & 0x1)
2518                         break;
2519                 if (iface_param->value[0] == ISCSI_NET_PARAM_ENABLE)
2520                         init_fw_cb->iscsi_opts |=
2521                                 cpu_to_le16(ISCSIOPTS_DATA_DIGEST_EN);
2522                 else
2523                         init_fw_cb->iscsi_opts &=
2524                                 cpu_to_le16(~ISCSIOPTS_DATA_DIGEST_EN);
2525                 break;
2526         case ISCSI_IFACE_PARAM_IMM_DATA_EN:
2527                 if (iface_param->iface_num & 0x1)
2528                         break;
2529                 if (iface_param->value[0] == ISCSI_NET_PARAM_ENABLE)
2530                         init_fw_cb->iscsi_opts |=
2531                                 cpu_to_le16(ISCSIOPTS_IMMEDIATE_DATA_EN);
2532                 else
2533                         init_fw_cb->iscsi_opts &=
2534                                 cpu_to_le16(~ISCSIOPTS_IMMEDIATE_DATA_EN);
2535                 break;
2536         case ISCSI_IFACE_PARAM_INITIAL_R2T_EN:
2537                 if (iface_param->iface_num & 0x1)
2538                         break;
2539                 if (iface_param->value[0] == ISCSI_NET_PARAM_ENABLE)
2540                         init_fw_cb->iscsi_opts |=
2541                                 cpu_to_le16(ISCSIOPTS_INITIAL_R2T_EN);
2542                 else
2543                         init_fw_cb->iscsi_opts &=
2544                                 cpu_to_le16(~ISCSIOPTS_INITIAL_R2T_EN);
2545                 break;
2546         case ISCSI_IFACE_PARAM_DATASEQ_INORDER_EN:
2547                 if (iface_param->iface_num & 0x1)
2548                         break;
2549                 if (iface_param->value[0] == ISCSI_NET_PARAM_ENABLE)
2550                         init_fw_cb->iscsi_opts |=
2551                                 cpu_to_le16(ISCSIOPTS_DATA_SEQ_INORDER_EN);
2552                 else
2553                         init_fw_cb->iscsi_opts &=
2554                                 cpu_to_le16(~ISCSIOPTS_DATA_SEQ_INORDER_EN);
2555                 break;
2556         case ISCSI_IFACE_PARAM_PDU_INORDER_EN:
2557                 if (iface_param->iface_num & 0x1)
2558                         break;
2559                 if (iface_param->value[0] == ISCSI_NET_PARAM_ENABLE)
2560                         init_fw_cb->iscsi_opts |=
2561                                 cpu_to_le16(ISCSIOPTS_DATA_PDU_INORDER_EN);
2562                 else
2563                         init_fw_cb->iscsi_opts &=
2564                                 cpu_to_le16(~ISCSIOPTS_DATA_PDU_INORDER_EN);
2565                 break;
2566         case ISCSI_IFACE_PARAM_ERL:
2567                 if (iface_param->iface_num & 0x1)
2568                         break;
2569                 init_fw_cb->iscsi_opts &= cpu_to_le16(~ISCSIOPTS_ERL);
2570                 init_fw_cb->iscsi_opts |= cpu_to_le16(iface_param->value[0] &
2571                                                       ISCSIOPTS_ERL);
2572                 break;
2573         case ISCSI_IFACE_PARAM_MAX_RECV_DLENGTH:
2574                 if (iface_param->iface_num & 0x1)
2575                         break;
2576                 init_fw_cb->iscsi_max_pdu_size =
2577                                 cpu_to_le32(*(uint32_t *)iface_param->value) /
2578                                 BYTE_UNITS;
2579                 break;
2580         case ISCSI_IFACE_PARAM_FIRST_BURST:
2581                 if (iface_param->iface_num & 0x1)
2582                         break;
2583                 init_fw_cb->iscsi_fburst_len =
2584                                 cpu_to_le32(*(uint32_t *)iface_param->value) /
2585                                 BYTE_UNITS;
2586                 break;
2587         case ISCSI_IFACE_PARAM_MAX_R2T:
2588                 if (iface_param->iface_num & 0x1)
2589                         break;
2590                 init_fw_cb->iscsi_max_outstnd_r2t =
2591                                 cpu_to_le16(*(uint16_t *)iface_param->value);
2592                 break;
2593         case ISCSI_IFACE_PARAM_MAX_BURST:
2594                 if (iface_param->iface_num & 0x1)
2595                         break;
2596                 init_fw_cb->iscsi_max_burst_len =
2597                                 cpu_to_le32(*(uint32_t *)iface_param->value) /
2598                                 BYTE_UNITS;
2599                 break;
2600         case ISCSI_IFACE_PARAM_CHAP_AUTH_EN:
2601                 if (iface_param->iface_num & 0x1)
2602                         break;
2603                 if (iface_param->value[0] == ISCSI_NET_PARAM_ENABLE)
2604                         init_fw_cb->iscsi_opts |=
2605                                 cpu_to_le16(ISCSIOPTS_CHAP_AUTH_EN);
2606                 else
2607                         init_fw_cb->iscsi_opts &=
2608                                 cpu_to_le16(~ISCSIOPTS_CHAP_AUTH_EN);
2609                 break;
2610         case ISCSI_IFACE_PARAM_BIDI_CHAP_EN:
2611                 if (iface_param->iface_num & 0x1)
2612                         break;
2613                 if (iface_param->value[0] == ISCSI_NET_PARAM_ENABLE)
2614                         init_fw_cb->iscsi_opts |=
2615                                 cpu_to_le16(ISCSIOPTS_BIDI_CHAP_EN);
2616                 else
2617                         init_fw_cb->iscsi_opts &=
2618                                 cpu_to_le16(~ISCSIOPTS_BIDI_CHAP_EN);
2619                 break;
2620         case ISCSI_IFACE_PARAM_DISCOVERY_AUTH_OPTIONAL:
2621                 if (iface_param->iface_num & 0x1)
2622                         break;
2623                 if (iface_param->value[0] == ISCSI_NET_PARAM_ENABLE)
2624                         init_fw_cb->iscsi_opts |=
2625                                 cpu_to_le16(ISCSIOPTS_DISCOVERY_AUTH_EN);
2626                 else
2627                         init_fw_cb->iscsi_opts &=
2628                                 cpu_to_le16(~ISCSIOPTS_DISCOVERY_AUTH_EN);
2629                 break;
2630         case ISCSI_IFACE_PARAM_DISCOVERY_LOGOUT_EN:
2631                 if (iface_param->iface_num & 0x1)
2632                         break;
2633                 if (iface_param->value[0] == ISCSI_NET_PARAM_ENABLE)
2634                         init_fw_cb->iscsi_opts |=
2635                                 cpu_to_le16(ISCSIOPTS_DISCOVERY_LOGOUT_EN);
2636                 else
2637                         init_fw_cb->iscsi_opts &=
2638                                 cpu_to_le16(~ISCSIOPTS_DISCOVERY_LOGOUT_EN);
2639                 break;
2640         case ISCSI_IFACE_PARAM_STRICT_LOGIN_COMP_EN:
2641                 if (iface_param->iface_num & 0x1)
2642                         break;
2643                 if (iface_param->value[0] == ISCSI_NET_PARAM_ENABLE)
2644                         init_fw_cb->iscsi_opts |=
2645                                 cpu_to_le16(ISCSIOPTS_STRICT_LOGIN_COMP_EN);
2646                 else
2647                         init_fw_cb->iscsi_opts &=
2648                                 cpu_to_le16(~ISCSIOPTS_STRICT_LOGIN_COMP_EN);
2649                 break;
2650         default:
2651                 ql4_printk(KERN_ERR, ha, "Unknown iscsi param = %d\n",
2652                            iface_param->param);
2653                 break;
2654         }
2655 }
2656
2657 static void
2658 qla4xxx_initcb_to_acb(struct addr_ctrl_blk *init_fw_cb)
2659 {
2660         struct addr_ctrl_blk_def *acb;
2661         acb = (struct addr_ctrl_blk_def *)init_fw_cb;
2662         memset(acb->reserved1, 0, sizeof(acb->reserved1));
2663         memset(acb->reserved2, 0, sizeof(acb->reserved2));
2664         memset(acb->reserved3, 0, sizeof(acb->reserved3));
2665         memset(acb->reserved4, 0, sizeof(acb->reserved4));
2666         memset(acb->reserved5, 0, sizeof(acb->reserved5));
2667         memset(acb->reserved6, 0, sizeof(acb->reserved6));
2668         memset(acb->reserved7, 0, sizeof(acb->reserved7));
2669         memset(acb->reserved8, 0, sizeof(acb->reserved8));
2670         memset(acb->reserved9, 0, sizeof(acb->reserved9));
2671         memset(acb->reserved10, 0, sizeof(acb->reserved10));
2672         memset(acb->reserved11, 0, sizeof(acb->reserved11));
2673         memset(acb->reserved12, 0, sizeof(acb->reserved12));
2674         memset(acb->reserved13, 0, sizeof(acb->reserved13));
2675         memset(acb->reserved14, 0, sizeof(acb->reserved14));
2676         memset(acb->reserved15, 0, sizeof(acb->reserved15));
2677 }
2678
2679 static int
2680 qla4xxx_iface_set_param(struct Scsi_Host *shost, void *data, uint32_t len)
2681 {
2682         struct scsi_qla_host *ha = to_qla_host(shost);
2683         int rval = 0;
2684         struct iscsi_iface_param_info *iface_param = NULL;
2685         struct addr_ctrl_blk *init_fw_cb = NULL;
2686         dma_addr_t init_fw_cb_dma;
2687         uint32_t mbox_cmd[MBOX_REG_COUNT];
2688         uint32_t mbox_sts[MBOX_REG_COUNT];
2689         uint32_t rem = len;
2690         struct nlattr *attr;
2691
2692         init_fw_cb = dma_zalloc_coherent(&ha->pdev->dev,
2693                                          sizeof(struct addr_ctrl_blk),
2694                                          &init_fw_cb_dma, GFP_KERNEL);
2695         if (!init_fw_cb) {
2696                 ql4_printk(KERN_ERR, ha, "%s: Unable to alloc init_cb\n",
2697                            __func__);
2698                 return -ENOMEM;
2699         }
2700
2701         memset(&mbox_cmd, 0, sizeof(mbox_cmd));
2702         memset(&mbox_sts, 0, sizeof(mbox_sts));
2703
2704         if (qla4xxx_get_ifcb(ha, &mbox_cmd[0], &mbox_sts[0], init_fw_cb_dma)) {
2705                 ql4_printk(KERN_ERR, ha, "%s: get ifcb failed\n", __func__);
2706                 rval = -EIO;
2707                 goto exit_init_fw_cb;
2708         }
2709
2710         nla_for_each_attr(attr, data, len, rem) {
2711                 iface_param = nla_data(attr);
2712
2713                 if (iface_param->param_type == ISCSI_NET_PARAM) {
2714                         switch (iface_param->iface_type) {
2715                         case ISCSI_IFACE_TYPE_IPV4:
2716                                 switch (iface_param->iface_num) {
2717                                 case 0:
2718                                         qla4xxx_set_ipv4(ha, iface_param,
2719                                                          init_fw_cb);
2720                                         break;
2721                                 default:
2722                                 /* Cannot have more than one IPv4 interface */
2723                                         ql4_printk(KERN_ERR, ha,
2724                                                    "Invalid IPv4 iface number = %d\n",
2725                                                    iface_param->iface_num);
2726                                         break;
2727                                 }
2728                                 break;
2729                         case ISCSI_IFACE_TYPE_IPV6:
2730                                 switch (iface_param->iface_num) {
2731                                 case 0:
2732                                 case 1:
2733                                         qla4xxx_set_ipv6(ha, iface_param,
2734                                                          init_fw_cb);
2735                                         break;
2736                                 default:
2737                                 /* Cannot have more than two IPv6 interface */
2738                                         ql4_printk(KERN_ERR, ha,
2739                                                    "Invalid IPv6 iface number = %d\n",
2740                                                    iface_param->iface_num);
2741                                         break;
2742                                 }
2743                                 break;
2744                         default:
2745                                 ql4_printk(KERN_ERR, ha,
2746                                            "Invalid iface type\n");
2747                                 break;
2748                         }
2749                 } else if (iface_param->param_type == ISCSI_IFACE_PARAM) {
2750                                 qla4xxx_set_iscsi_param(ha, iface_param,
2751                                                         init_fw_cb);
2752                 } else {
2753                         continue;
2754                 }
2755         }
2756
2757         init_fw_cb->cookie = cpu_to_le32(0x11BEAD5A);
2758
2759         rval = qla4xxx_set_flash(ha, init_fw_cb_dma, FLASH_SEGMENT_IFCB,
2760                                  sizeof(struct addr_ctrl_blk),
2761                                  FLASH_OPT_RMW_COMMIT);
2762         if (rval != QLA_SUCCESS) {
2763                 ql4_printk(KERN_ERR, ha, "%s: set flash mbx failed\n",
2764                            __func__);
2765                 rval = -EIO;
2766                 goto exit_init_fw_cb;
2767         }
2768
2769         rval = qla4xxx_disable_acb(ha);
2770         if (rval != QLA_SUCCESS) {
2771                 ql4_printk(KERN_ERR, ha, "%s: disable acb mbx failed\n",
2772                            __func__);
2773                 rval = -EIO;
2774                 goto exit_init_fw_cb;
2775         }
2776
2777         wait_for_completion_timeout(&ha->disable_acb_comp,
2778                                     DISABLE_ACB_TOV * HZ);
2779
2780         qla4xxx_initcb_to_acb(init_fw_cb);
2781
2782         rval = qla4xxx_set_acb(ha, &mbox_cmd[0], &mbox_sts[0], init_fw_cb_dma);
2783         if (rval != QLA_SUCCESS) {
2784                 ql4_printk(KERN_ERR, ha, "%s: set acb mbx failed\n",
2785                            __func__);
2786                 rval = -EIO;
2787                 goto exit_init_fw_cb;
2788         }
2789
2790         memset(init_fw_cb, 0, sizeof(struct addr_ctrl_blk));
2791         qla4xxx_update_local_ifcb(ha, &mbox_cmd[0], &mbox_sts[0], init_fw_cb,
2792                                   init_fw_cb_dma);
2793
2794 exit_init_fw_cb:
2795         dma_free_coherent(&ha->pdev->dev, sizeof(struct addr_ctrl_blk),
2796                           init_fw_cb, init_fw_cb_dma);
2797
2798         return rval;
2799 }
2800
2801 static int qla4xxx_session_get_param(struct iscsi_cls_session *cls_sess,
2802                                      enum iscsi_param param, char *buf)
2803 {
2804         struct iscsi_session *sess = cls_sess->dd_data;
2805         struct ddb_entry *ddb_entry = sess->dd_data;
2806         struct scsi_qla_host *ha = ddb_entry->ha;
2807         struct iscsi_cls_conn *cls_conn = ddb_entry->conn;
2808         struct ql4_chap_table chap_tbl;
2809         int rval, len;
2810         uint16_t idx;
2811
2812         memset(&chap_tbl, 0, sizeof(chap_tbl));
2813         switch (param) {
2814         case ISCSI_PARAM_CHAP_IN_IDX:
2815                 rval = qla4xxx_get_chap_index(ha, sess->username_in,
2816                                               sess->password_in, BIDI_CHAP,
2817                                               &idx);
2818                 if (rval)
2819                         len = sprintf(buf, "\n");
2820                 else
2821                         len = sprintf(buf, "%hu\n", idx);
2822                 break;
2823         case ISCSI_PARAM_CHAP_OUT_IDX:
2824                 if (ddb_entry->ddb_type == FLASH_DDB) {
2825                         if (ddb_entry->chap_tbl_idx != INVALID_ENTRY) {
2826                                 idx = ddb_entry->chap_tbl_idx;
2827                                 rval = QLA_SUCCESS;
2828                         } else {
2829                                 rval = QLA_ERROR;
2830                         }
2831                 } else {
2832                         rval = qla4xxx_get_chap_index(ha, sess->username,
2833                                                       sess->password,
2834                                                       LOCAL_CHAP, &idx);
2835                 }
2836                 if (rval)
2837                         len = sprintf(buf, "\n");
2838                 else
2839                         len = sprintf(buf, "%hu\n", idx);
2840                 break;
2841         case ISCSI_PARAM_USERNAME:
2842         case ISCSI_PARAM_PASSWORD:
2843                 /* First, populate session username and password for FLASH DDB,
2844                  * if not already done. This happens when session login fails
2845                  * for a FLASH DDB.
2846                  */
2847                 if (ddb_entry->ddb_type == FLASH_DDB &&
2848                     ddb_entry->chap_tbl_idx != INVALID_ENTRY &&
2849                     !sess->username && !sess->password) {
2850                         idx = ddb_entry->chap_tbl_idx;
2851                         rval = qla4xxx_get_uni_chap_at_index(ha, chap_tbl.name,
2852                                                             chap_tbl.secret,
2853                                                             idx);
2854                         if (!rval) {
2855                                 iscsi_set_param(cls_conn, ISCSI_PARAM_USERNAME,
2856                                                 (char *)chap_tbl.name,
2857                                                 strlen((char *)chap_tbl.name));
2858                                 iscsi_set_param(cls_conn, ISCSI_PARAM_PASSWORD,
2859                                                 (char *)chap_tbl.secret,
2860                                                 chap_tbl.secret_len);
2861                         }
2862                 }
2863                 /* allow fall-through */
2864         default:
2865                 return iscsi_session_get_param(cls_sess, param, buf);
2866         }
2867
2868         return len;
2869 }
2870
2871 static int qla4xxx_conn_get_param(struct iscsi_cls_conn *cls_conn,
2872                                   enum iscsi_param param, char *buf)
2873 {
2874         struct iscsi_conn *conn;
2875         struct qla_conn *qla_conn;
2876         struct sockaddr *dst_addr;
2877
2878         conn = cls_conn->dd_data;
2879         qla_conn = conn->dd_data;
2880         dst_addr = (struct sockaddr *)&qla_conn->qla_ep->dst_addr;
2881
2882         switch (param) {
2883         case ISCSI_PARAM_CONN_PORT:
2884         case ISCSI_PARAM_CONN_ADDRESS:
2885                 return iscsi_conn_get_addr_param((struct sockaddr_storage *)
2886                                                  dst_addr, param, buf);
2887         default:
2888                 return iscsi_conn_get_param(cls_conn, param, buf);
2889         }
2890 }
2891
2892 int qla4xxx_get_ddb_index(struct scsi_qla_host *ha, uint16_t *ddb_index)
2893 {
2894         uint32_t mbx_sts = 0;
2895         uint16_t tmp_ddb_index;
2896         int ret;
2897
2898 get_ddb_index:
2899         tmp_ddb_index = find_first_zero_bit(ha->ddb_idx_map, MAX_DDB_ENTRIES);
2900
2901         if (tmp_ddb_index >= MAX_DDB_ENTRIES) {
2902                 DEBUG2(ql4_printk(KERN_INFO, ha,
2903                                   "Free DDB index not available\n"));
2904                 ret = QLA_ERROR;
2905                 goto exit_get_ddb_index;
2906         }
2907
2908         if (test_and_set_bit(tmp_ddb_index, ha->ddb_idx_map))
2909                 goto get_ddb_index;
2910
2911         DEBUG2(ql4_printk(KERN_INFO, ha,
2912                           "Found a free DDB index at %d\n", tmp_ddb_index));
2913         ret = qla4xxx_req_ddb_entry(ha, tmp_ddb_index, &mbx_sts);
2914         if (ret == QLA_ERROR) {
2915                 if (mbx_sts == MBOX_STS_COMMAND_ERROR) {
2916                         ql4_printk(KERN_INFO, ha,
2917                                    "DDB index = %d not available trying next\n",
2918                                    tmp_ddb_index);
2919                         goto get_ddb_index;
2920                 }
2921                 DEBUG2(ql4_printk(KERN_INFO, ha,
2922                                   "Free FW DDB not available\n"));
2923         }
2924
2925         *ddb_index = tmp_ddb_index;
2926
2927 exit_get_ddb_index:
2928         return ret;
2929 }
2930
2931 static int qla4xxx_match_ipaddress(struct scsi_qla_host *ha,
2932                                    struct ddb_entry *ddb_entry,
2933                                    char *existing_ipaddr,
2934                                    char *user_ipaddr)
2935 {
2936         uint8_t dst_ipaddr[IPv6_ADDR_LEN];
2937         char formatted_ipaddr[DDB_IPADDR_LEN];
2938         int status = QLA_SUCCESS, ret = 0;
2939
2940         if (ddb_entry->fw_ddb_entry.options & DDB_OPT_IPV6_DEVICE) {
2941                 ret = in6_pton(user_ipaddr, strlen(user_ipaddr), dst_ipaddr,
2942                                '\0', NULL);
2943                 if (ret == 0) {
2944                         status = QLA_ERROR;
2945                         goto out_match;
2946                 }
2947                 ret = sprintf(formatted_ipaddr, "%pI6", dst_ipaddr);
2948         } else {
2949                 ret = in4_pton(user_ipaddr, strlen(user_ipaddr), dst_ipaddr,
2950                                '\0', NULL);
2951                 if (ret == 0) {
2952                         status = QLA_ERROR;
2953                         goto out_match;
2954                 }
2955                 ret = sprintf(formatted_ipaddr, "%pI4", dst_ipaddr);
2956         }
2957
2958         if (strcmp(existing_ipaddr, formatted_ipaddr))
2959                 status = QLA_ERROR;
2960
2961 out_match:
2962         return status;
2963 }
2964
2965 static int qla4xxx_match_fwdb_session(struct scsi_qla_host *ha,
2966                                       struct iscsi_cls_conn *cls_conn)
2967 {
2968         int idx = 0, max_ddbs, rval;
2969         struct iscsi_cls_session *cls_sess = iscsi_conn_to_session(cls_conn);
2970         struct iscsi_session *sess, *existing_sess;
2971         struct iscsi_conn *conn, *existing_conn;
2972         struct ddb_entry *ddb_entry;
2973
2974         sess = cls_sess->dd_data;
2975         conn = cls_conn->dd_data;
2976
2977         if (sess->targetname == NULL ||
2978             conn->persistent_address == NULL ||
2979             conn->persistent_port == 0)
2980                 return QLA_ERROR;
2981
2982         max_ddbs =  is_qla40XX(ha) ? MAX_DEV_DB_ENTRIES_40XX :
2983                                      MAX_DEV_DB_ENTRIES;
2984
2985         for (idx = 0; idx < max_ddbs; idx++) {
2986                 ddb_entry = qla4xxx_lookup_ddb_by_fw_index(ha, idx);
2987                 if (ddb_entry == NULL)
2988                         continue;
2989
2990                 if (ddb_entry->ddb_type != FLASH_DDB)
2991                         continue;
2992
2993                 existing_sess = ddb_entry->sess->dd_data;
2994                 existing_conn = ddb_entry->conn->dd_data;
2995
2996                 if (existing_sess->targetname == NULL ||
2997                     existing_conn->persistent_address == NULL ||
2998                     existing_conn->persistent_port == 0)
2999                         continue;
3000
3001                 DEBUG2(ql4_printk(KERN_INFO, ha,
3002                                   "IQN = %s User IQN = %s\n",
3003                                   existing_sess->targetname,
3004                                   sess->targetname));
3005
3006                 DEBUG2(ql4_printk(KERN_INFO, ha,
3007                                   "IP = %s User IP = %s\n",
3008                                   existing_conn->persistent_address,
3009                                   conn->persistent_address));
3010
3011                 DEBUG2(ql4_printk(KERN_INFO, ha,
3012                                   "Port = %d User Port = %d\n",
3013                                   existing_conn->persistent_port,
3014                                   conn->persistent_port));
3015
3016                 if (strcmp(existing_sess->targetname, sess->targetname))
3017                         continue;
3018                 rval = qla4xxx_match_ipaddress(ha, ddb_entry,
3019                                         existing_conn->persistent_address,
3020                                         conn->persistent_address);
3021                 if (rval == QLA_ERROR)
3022                         continue;
3023                 if (existing_conn->persistent_port != conn->persistent_port)
3024                         continue;
3025                 break;
3026         }
3027
3028         if (idx == max_ddbs)
3029                 return QLA_ERROR;
3030
3031         DEBUG2(ql4_printk(KERN_INFO, ha,
3032                           "Match found in fwdb sessions\n"));
3033         return QLA_SUCCESS;
3034 }
3035
3036 static struct iscsi_cls_session *
3037 qla4xxx_session_create(struct iscsi_endpoint *ep,
3038                         uint16_t cmds_max, uint16_t qdepth,
3039                         uint32_t initial_cmdsn)
3040 {
3041         struct iscsi_cls_session *cls_sess;
3042         struct scsi_qla_host *ha;
3043         struct qla_endpoint *qla_ep;
3044         struct ddb_entry *ddb_entry;
3045         uint16_t ddb_index;
3046         struct iscsi_session *sess;
3047         struct sockaddr *dst_addr;
3048         int ret;
3049
3050         if (!ep) {
3051                 printk(KERN_ERR "qla4xxx: missing ep.\n");
3052                 return NULL;
3053         }
3054
3055         qla_ep = ep->dd_data;
3056         dst_addr = (struct sockaddr *)&qla_ep->dst_addr;
3057         ha = to_qla_host(qla_ep->host);
3058         DEBUG2(ql4_printk(KERN_INFO, ha, "%s: host: %ld\n", __func__,
3059                           ha->host_no));
3060
3061         ret = qla4xxx_get_ddb_index(ha, &ddb_index);
3062         if (ret == QLA_ERROR)
3063                 return NULL;
3064
3065         cls_sess = iscsi_session_setup(&qla4xxx_iscsi_transport, qla_ep->host,
3066                                        cmds_max, sizeof(struct ddb_entry),
3067                                        sizeof(struct ql4_task_data),
3068                                        initial_cmdsn, ddb_index);
3069         if (!cls_sess)
3070                 return NULL;
3071
3072         sess = cls_sess->dd_data;
3073         ddb_entry = sess->dd_data;
3074         ddb_entry->fw_ddb_index = ddb_index;
3075         ddb_entry->fw_ddb_device_state = DDB_DS_NO_CONNECTION_ACTIVE;
3076         ddb_entry->ha = ha;
3077         ddb_entry->sess = cls_sess;
3078         ddb_entry->unblock_sess = qla4xxx_unblock_ddb;
3079         ddb_entry->ddb_change = qla4xxx_ddb_change;
3080         clear_bit(DDB_CONN_CLOSE_FAILURE, &ddb_entry->flags);
3081         cls_sess->recovery_tmo = ql4xsess_recovery_tmo;
3082         ha->fw_ddb_index_map[ddb_entry->fw_ddb_index] = ddb_entry;
3083         ha->tot_ddbs++;
3084
3085         return cls_sess;
3086 }
3087
3088 static void qla4xxx_session_destroy(struct iscsi_cls_session *cls_sess)
3089 {
3090         struct iscsi_session *sess;
3091         struct ddb_entry *ddb_entry;
3092         struct scsi_qla_host *ha;
3093         unsigned long flags, wtime;
3094         struct dev_db_entry *fw_ddb_entry = NULL;
3095         dma_addr_t fw_ddb_entry_dma;
3096         uint32_t ddb_state;
3097         int ret;
3098
3099         sess = cls_sess->dd_data;
3100         ddb_entry = sess->dd_data;
3101         ha = ddb_entry->ha;
3102         DEBUG2(ql4_printk(KERN_INFO, ha, "%s: host: %ld\n", __func__,
3103                           ha->host_no));
3104
3105         fw_ddb_entry = dma_alloc_coherent(&ha->pdev->dev, sizeof(*fw_ddb_entry),
3106                                           &fw_ddb_entry_dma, GFP_KERNEL);
3107         if (!fw_ddb_entry) {
3108                 ql4_printk(KERN_ERR, ha,
3109                            "%s: Unable to allocate dma buffer\n", __func__);
3110                 goto destroy_session;
3111         }
3112
3113         wtime = jiffies + (HZ * LOGOUT_TOV);
3114         do {
3115                 ret = qla4xxx_get_fwddb_entry(ha, ddb_entry->fw_ddb_index,
3116                                               fw_ddb_entry, fw_ddb_entry_dma,
3117                                               NULL, NULL, &ddb_state, NULL,
3118                                               NULL, NULL);
3119                 if (ret == QLA_ERROR)
3120                         goto destroy_session;
3121
3122                 if ((ddb_state == DDB_DS_NO_CONNECTION_ACTIVE) ||
3123                     (ddb_state == DDB_DS_SESSION_FAILED))
3124                         goto destroy_session;
3125
3126                 schedule_timeout_uninterruptible(HZ);
3127         } while ((time_after(wtime, jiffies)));
3128
3129 destroy_session:
3130         qla4xxx_clear_ddb_entry(ha, ddb_entry->fw_ddb_index);
3131         if (test_and_clear_bit(DDB_CONN_CLOSE_FAILURE, &ddb_entry->flags))
3132                 clear_bit(ddb_entry->fw_ddb_index, ha->ddb_idx_map);
3133         spin_lock_irqsave(&ha->hardware_lock, flags);
3134         qla4xxx_free_ddb(ha, ddb_entry);
3135         spin_unlock_irqrestore(&ha->hardware_lock, flags);
3136
3137         iscsi_session_teardown(cls_sess);
3138
3139         if (fw_ddb_entry)
3140                 dma_free_coherent(&ha->pdev->dev, sizeof(*fw_ddb_entry),
3141                                   fw_ddb_entry, fw_ddb_entry_dma);
3142 }
3143
3144 static struct iscsi_cls_conn *
3145 qla4xxx_conn_create(struct iscsi_cls_session *cls_sess, uint32_t conn_idx)
3146 {
3147         struct iscsi_cls_conn *cls_conn;
3148         struct iscsi_session *sess;
3149         struct ddb_entry *ddb_entry;
3150         struct scsi_qla_host *ha;
3151
3152         cls_conn = iscsi_conn_setup(cls_sess, sizeof(struct qla_conn),
3153                                     conn_idx);
3154         if (!cls_conn) {
3155                 pr_info("%s: Can not create connection for conn_idx = %u\n",
3156                         __func__, conn_idx);
3157                 return NULL;
3158         }
3159
3160         sess = cls_sess->dd_data;
3161         ddb_entry = sess->dd_data;
3162         ddb_entry->conn = cls_conn;
3163
3164         ha = ddb_entry->ha;
3165         DEBUG2(ql4_printk(KERN_INFO, ha, "%s: conn_idx = %u\n", __func__,
3166                           conn_idx));
3167         return cls_conn;
3168 }
3169
3170 static int qla4xxx_conn_bind(struct iscsi_cls_session *cls_session,
3171                              struct iscsi_cls_conn *cls_conn,
3172                              uint64_t transport_fd, int is_leading)
3173 {
3174         struct iscsi_conn *conn;
3175         struct qla_conn *qla_conn;
3176         struct iscsi_endpoint *ep;
3177         struct ddb_entry *ddb_entry;
3178         struct scsi_qla_host *ha;
3179         struct iscsi_session *sess;
3180
3181         sess = cls_session->dd_data;
3182         ddb_entry = sess->dd_data;
3183         ha = ddb_entry->ha;
3184
3185         DEBUG2(ql4_printk(KERN_INFO, ha, "%s: sid = %d, cid = %d\n", __func__,
3186                           cls_session->sid, cls_conn->cid));
3187
3188         if (iscsi_conn_bind(cls_session, cls_conn, is_leading))
3189                 return -EINVAL;
3190         ep = iscsi_lookup_endpoint(transport_fd);
3191         conn = cls_conn->dd_data;
3192         qla_conn = conn->dd_data;
3193         qla_conn->qla_ep = ep->dd_data;
3194         return 0;
3195 }
3196
3197 static int qla4xxx_conn_start(struct iscsi_cls_conn *cls_conn)
3198 {
3199         struct iscsi_cls_session *cls_sess = iscsi_conn_to_session(cls_conn);
3200         struct iscsi_session *sess;
3201         struct ddb_entry *ddb_entry;
3202         struct scsi_qla_host *ha;
3203         struct dev_db_entry *fw_ddb_entry = NULL;
3204         dma_addr_t fw_ddb_entry_dma;
3205         uint32_t mbx_sts = 0;
3206         int ret = 0;
3207         int status = QLA_SUCCESS;
3208
3209         sess = cls_sess->dd_data;
3210         ddb_entry = sess->dd_data;
3211         ha = ddb_entry->ha;
3212         DEBUG2(ql4_printk(KERN_INFO, ha, "%s: sid = %d, cid = %d\n", __func__,
3213                           cls_sess->sid, cls_conn->cid));
3214
3215         /* Check if we have  matching FW DDB, if yes then do not
3216          * login to this target. This could cause target to logout previous
3217          * connection
3218          */
3219         ret = qla4xxx_match_fwdb_session(ha, cls_conn);
3220         if (ret == QLA_SUCCESS) {
3221                 ql4_printk(KERN_INFO, ha,
3222                            "Session already exist in FW.\n");
3223                 ret = -EEXIST;
3224                 goto exit_conn_start;
3225         }
3226
3227         fw_ddb_entry = dma_alloc_coherent(&ha->pdev->dev, sizeof(*fw_ddb_entry),
3228                                           &fw_ddb_entry_dma, GFP_KERNEL);
3229         if (!fw_ddb_entry) {
3230                 ql4_printk(KERN_ERR, ha,
3231                            "%s: Unable to allocate dma buffer\n", __func__);
3232                 ret = -ENOMEM;
3233                 goto exit_conn_start;
3234         }
3235
3236         ret = qla4xxx_set_param_ddbentry(ha, ddb_entry, cls_conn, &mbx_sts);
3237         if (ret) {
3238                 /* If iscsid is stopped and started then no need to do
3239                 * set param again since ddb state will be already
3240                 * active and FW does not allow set ddb to an
3241                 * active session.
3242                 */
3243                 if (mbx_sts)
3244                         if (ddb_entry->fw_ddb_device_state ==
3245                                                 DDB_DS_SESSION_ACTIVE) {
3246                                 ddb_entry->unblock_sess(ddb_entry->sess);
3247                                 goto exit_set_param;
3248                         }
3249
3250                 ql4_printk(KERN_ERR, ha, "%s: Failed set param for index[%d]\n",
3251                            __func__, ddb_entry->fw_ddb_index);
3252                 goto exit_conn_start;
3253         }
3254
3255         status = qla4xxx_conn_open(ha, ddb_entry->fw_ddb_index);
3256         if (status == QLA_ERROR) {
3257                 ql4_printk(KERN_ERR, ha, "%s: Login failed: %s\n", __func__,
3258                            sess->targetname);
3259                 ret = -EINVAL;
3260                 goto exit_conn_start;
3261         }
3262
3263         if (ddb_entry->fw_ddb_device_state == DDB_DS_NO_CONNECTION_ACTIVE)
3264                 ddb_entry->fw_ddb_device_state = DDB_DS_LOGIN_IN_PROCESS;
3265
3266         DEBUG2(printk(KERN_INFO "%s: DDB state [%d]\n", __func__,
3267                       ddb_entry->fw_ddb_device_state));
3268
3269 exit_set_param:
3270         ret = 0;
3271
3272 exit_conn_start:
3273         if (fw_ddb_entry)
3274                 dma_free_coherent(&ha->pdev->dev, sizeof(*fw_ddb_entry),
3275                                   fw_ddb_entry, fw_ddb_entry_dma);
3276         return ret;
3277 }
3278
3279 static void qla4xxx_conn_destroy(struct iscsi_cls_conn *cls_conn)
3280 {
3281         struct iscsi_cls_session *cls_sess = iscsi_conn_to_session(cls_conn);
3282         struct iscsi_session *sess;
3283         struct scsi_qla_host *ha;
3284         struct ddb_entry *ddb_entry;
3285         int options;
3286
3287         sess = cls_sess->dd_data;
3288         ddb_entry = sess->dd_data;
3289         ha = ddb_entry->ha;
3290         DEBUG2(ql4_printk(KERN_INFO, ha, "%s: cid = %d\n", __func__,
3291                           cls_conn->cid));
3292
3293         options = LOGOUT_OPTION_CLOSE_SESSION;
3294         if (qla4xxx_session_logout_ddb(ha, ddb_entry, options) == QLA_ERROR)
3295                 ql4_printk(KERN_ERR, ha, "%s: Logout failed\n", __func__);
3296 }
3297
3298 static void qla4xxx_task_work(struct work_struct *wdata)
3299 {
3300         struct ql4_task_data *task_data;
3301         struct scsi_qla_host *ha;
3302         struct passthru_status *sts;
3303         struct iscsi_task *task;
3304         struct iscsi_hdr *hdr;
3305         uint8_t *data;
3306         uint32_t data_len;
3307         struct iscsi_conn *conn;
3308         int hdr_len;
3309         itt_t itt;
3310
3311         task_data = container_of(wdata, struct ql4_task_data, task_work);
3312         ha = task_data->ha;
3313         task = task_data->task;
3314         sts = &task_data->sts;
3315         hdr_len = sizeof(struct iscsi_hdr);
3316
3317         DEBUG3(printk(KERN_INFO "Status returned\n"));
3318         DEBUG3(qla4xxx_dump_buffer(sts, 64));
3319         DEBUG3(printk(KERN_INFO "Response buffer"));
3320         DEBUG3(qla4xxx_dump_buffer(task_data->resp_buffer, 64));
3321
3322         conn = task->conn;
3323
3324         switch (sts->completionStatus) {
3325         case PASSTHRU_STATUS_COMPLETE:
3326                 hdr = (struct iscsi_hdr *)task_data->resp_buffer;
3327                 /* Assign back the itt in hdr, until we use the PREASSIGN_TAG */
3328                 itt = sts->handle;
3329                 hdr->itt = itt;
3330                 data = task_data->resp_buffer + hdr_len;
3331                 data_len = task_data->resp_len - hdr_len;
3332                 iscsi_complete_pdu(conn, hdr, data, data_len);
3333                 break;
3334         default:
3335                 ql4_printk(KERN_ERR, ha, "Passthru failed status = 0x%x\n",
3336                            sts->completionStatus);
3337                 break;
3338         }
3339         return;
3340 }
3341
3342 static int qla4xxx_alloc_pdu(struct iscsi_task *task, uint8_t opcode)
3343 {
3344         struct ql4_task_data *task_data;
3345         struct iscsi_session *sess;
3346         struct ddb_entry *ddb_entry;
3347         struct scsi_qla_host *ha;
3348         int hdr_len;
3349
3350         sess = task->conn->session;
3351         ddb_entry = sess->dd_data;
3352         ha = ddb_entry->ha;
3353         task_data = task->dd_data;
3354         memset(task_data, 0, sizeof(struct ql4_task_data));
3355
3356         if (task->sc) {
3357                 ql4_printk(KERN_INFO, ha,
3358                            "%s: SCSI Commands not implemented\n", __func__);
3359                 return -EINVAL;
3360         }
3361
3362         hdr_len = sizeof(struct iscsi_hdr);
3363         task_data->ha = ha;
3364         task_data->task = task;
3365
3366         if (task->data_count) {
3367                 task_data->data_dma = dma_map_single(&ha->pdev->dev, task->data,
3368                                                      task->data_count,
3369                                                      PCI_DMA_TODEVICE);
3370         }
3371
3372         DEBUG2(ql4_printk(KERN_INFO, ha, "%s: MaxRecvLen %u, iscsi hrd %d\n",
3373                       __func__, task->conn->max_recv_dlength, hdr_len));
3374
3375         task_data->resp_len = task->conn->max_recv_dlength + hdr_len;
3376         task_data->resp_buffer = dma_alloc_coherent(&ha->pdev->dev,
3377                                                     task_data->resp_len,
3378                                                     &task_data->resp_dma,
3379                                                     GFP_ATOMIC);
3380         if (!task_data->resp_buffer)
3381                 goto exit_alloc_pdu;
3382
3383         task_data->req_len = task->data_count + hdr_len;
3384         task_data->req_buffer = dma_alloc_coherent(&ha->pdev->dev,
3385                                                    task_data->req_len,
3386                                                    &task_data->req_dma,
3387                                                    GFP_ATOMIC);
3388         if (!task_data->req_buffer)
3389                 goto exit_alloc_pdu;
3390
3391         task->hdr = task_data->req_buffer;
3392
3393         INIT_WORK(&task_data->task_work, qla4xxx_task_work);
3394
3395         return 0;
3396
3397 exit_alloc_pdu:
3398         if (task_data->resp_buffer)
3399                 dma_free_coherent(&ha->pdev->dev, task_data->resp_len,
3400                                   task_data->resp_buffer, task_data->resp_dma);
3401
3402         if (task_data->req_buffer)
3403                 dma_free_coherent(&ha->pdev->dev, task_data->req_len,
3404                                   task_data->req_buffer, task_data->req_dma);
3405         return -ENOMEM;
3406 }
3407
3408 static void qla4xxx_task_cleanup(struct iscsi_task *task)
3409 {
3410         struct ql4_task_data *task_data;
3411         struct iscsi_session *sess;
3412         struct ddb_entry *ddb_entry;
3413         struct scsi_qla_host *ha;
3414         int hdr_len;
3415
3416         hdr_len = sizeof(struct iscsi_hdr);
3417         sess = task->conn->session;
3418         ddb_entry = sess->dd_data;
3419         ha = ddb_entry->ha;
3420         task_data = task->dd_data;
3421
3422         if (task->data_count) {
3423                 dma_unmap_single(&ha->pdev->dev, task_data->data_dma,
3424                                  task->data_count, PCI_DMA_TODEVICE);
3425         }
3426
3427         DEBUG2(ql4_printk(KERN_INFO, ha, "%s: MaxRecvLen %u, iscsi hrd %d\n",
3428                       __func__, task->conn->max_recv_dlength, hdr_len));
3429
3430         dma_free_coherent(&ha->pdev->dev, task_data->resp_len,
3431                           task_data->resp_buffer, task_data->resp_dma);
3432         dma_free_coherent(&ha->pdev->dev, task_data->req_len,
3433                           task_data->req_buffer, task_data->req_dma);
3434         return;
3435 }
3436
3437 static int qla4xxx_task_xmit(struct iscsi_task *task)
3438 {
3439         struct scsi_cmnd *sc = task->sc;
3440         struct iscsi_session *sess = task->conn->session;
3441         struct ddb_entry *ddb_entry = sess->dd_data;
3442         struct scsi_qla_host *ha = ddb_entry->ha;
3443
3444         if (!sc)
3445                 return qla4xxx_send_passthru0(task);
3446
3447         ql4_printk(KERN_INFO, ha, "%s: scsi cmd xmit not implemented\n",
3448                    __func__);
3449         return -ENOSYS;
3450 }
3451
3452 static int qla4xxx_copy_from_fwddb_param(struct iscsi_bus_flash_session *sess,
3453                                          struct iscsi_bus_flash_conn *conn,
3454                                          struct dev_db_entry *fw_ddb_entry)
3455 {
3456         unsigned long options = 0;
3457         int rc = 0;
3458
3459         options = le16_to_cpu(fw_ddb_entry->options);
3460         conn->is_fw_assigned_ipv6 = test_bit(OPT_IS_FW_ASSIGNED_IPV6, &options);
3461         if (test_bit(OPT_IPV6_DEVICE, &options)) {
3462                 rc = iscsi_switch_str_param(&sess->portal_type,
3463                                             PORTAL_TYPE_IPV6);
3464                 if (rc)
3465                         goto exit_copy;
3466         } else {
3467                 rc = iscsi_switch_str_param(&sess->portal_type,
3468                                             PORTAL_TYPE_IPV4);
3469                 if (rc)
3470                         goto exit_copy;
3471         }
3472
3473         sess->auto_snd_tgt_disable = test_bit(OPT_AUTO_SENDTGTS_DISABLE,
3474                                               &options);
3475         sess->discovery_sess = test_bit(OPT_DISC_SESSION, &options);
3476         sess->entry_state = test_bit(OPT_ENTRY_STATE, &options);
3477
3478         options = le16_to_cpu(fw_ddb_entry->iscsi_options);
3479         conn->hdrdgst_en = test_bit(ISCSIOPT_HEADER_DIGEST_EN, &options);
3480         conn->datadgst_en = test_bit(ISCSIOPT_DATA_DIGEST_EN, &options);
3481         sess->imm_data_en = test_bit(ISCSIOPT_IMMEDIATE_DATA_EN, &options);
3482         sess->initial_r2t_en = test_bit(ISCSIOPT_INITIAL_R2T_EN, &options);
3483         sess->dataseq_inorder_en = test_bit(ISCSIOPT_DATA_SEQ_IN_ORDER,
3484                                             &options);
3485         sess->pdu_inorder_en = test_bit(ISCSIOPT_DATA_PDU_IN_ORDER, &options);
3486         sess->chap_auth_en = test_bit(ISCSIOPT_CHAP_AUTH_EN, &options);
3487         conn->snack_req_en = test_bit(ISCSIOPT_SNACK_REQ_EN, &options);
3488         sess->discovery_logout_en = test_bit(ISCSIOPT_DISCOVERY_LOGOUT_EN,
3489                                              &options);
3490         sess->bidi_chap_en = test_bit(ISCSIOPT_BIDI_CHAP_EN, &options);
3491         sess->discovery_auth_optional =
3492                         test_bit(ISCSIOPT_DISCOVERY_AUTH_OPTIONAL, &options);
3493         if (test_bit(ISCSIOPT_ERL1, &options))
3494                 sess->erl |= BIT_1;
3495         if (test_bit(ISCSIOPT_ERL0, &options))
3496                 sess->erl |= BIT_0;
3497
3498         options = le16_to_cpu(fw_ddb_entry->tcp_options);
3499         conn->tcp_timestamp_stat = test_bit(TCPOPT_TIMESTAMP_STAT, &options);
3500         conn->tcp_nagle_disable = test_bit(TCPOPT_NAGLE_DISABLE, &options);
3501         conn->tcp_wsf_disable = test_bit(TCPOPT_WSF_DISABLE, &options);
3502         if (test_bit(TCPOPT_TIMER_SCALE3, &options))
3503                 conn->tcp_timer_scale |= BIT_3;
3504         if (test_bit(TCPOPT_TIMER_SCALE2, &options))
3505                 conn->tcp_timer_scale |= BIT_2;
3506         if (test_bit(TCPOPT_TIMER_SCALE1, &options))
3507                 conn->tcp_timer_scale |= BIT_1;
3508
3509         conn->tcp_timer_scale >>= 1;
3510         conn->tcp_timestamp_en = test_bit(TCPOPT_TIMESTAMP_EN, &options);
3511
3512         options = le16_to_cpu(fw_ddb_entry->ip_options);
3513         conn->fragment_disable = test_bit(IPOPT_FRAGMENT_DISABLE, &options);
3514
3515         conn->max_recv_dlength = BYTE_UNITS *
3516                           le16_to_cpu(fw_ddb_entry->iscsi_max_rcv_data_seg_len);
3517         conn->max_xmit_dlength = BYTE_UNITS *
3518                           le16_to_cpu(fw_ddb_entry->iscsi_max_snd_data_seg_len);
3519         sess->first_burst = BYTE_UNITS *
3520                                le16_to_cpu(fw_ddb_entry->iscsi_first_burst_len);
3521         sess->max_burst = BYTE_UNITS *
3522                                  le16_to_cpu(fw_ddb_entry->iscsi_max_burst_len);
3523         sess->max_r2t = le16_to_cpu(fw_ddb_entry->iscsi_max_outsnd_r2t);
3524         sess->time2wait = le16_to_cpu(fw_ddb_entry->iscsi_def_time2wait);
3525         sess->time2retain = le16_to_cpu(fw_ddb_entry->iscsi_def_time2retain);
3526         sess->tpgt = le32_to_cpu(fw_ddb_entry->tgt_portal_grp);
3527         conn->max_segment_size = le16_to_cpu(fw_ddb_entry->mss);
3528         conn->tcp_xmit_wsf = fw_ddb_entry->tcp_xmt_wsf;
3529         conn->tcp_recv_wsf = fw_ddb_entry->tcp_rcv_wsf;
3530         conn->ipv6_flow_label = le16_to_cpu(fw_ddb_entry->ipv6_flow_lbl);
3531         conn->keepalive_timeout = le16_to_cpu(fw_ddb_entry->ka_timeout);
3532         conn->local_port = le16_to_cpu(fw_ddb_entry->lcl_port);
3533         conn->statsn = le32_to_cpu(fw_ddb_entry->stat_sn);
3534         conn->exp_statsn = le32_to_cpu(fw_ddb_entry->exp_stat_sn);
3535         sess->discovery_parent_idx = le16_to_cpu(fw_ddb_entry->ddb_link);
3536         sess->discovery_parent_type = le16_to_cpu(fw_ddb_entry->ddb_link);
3537         sess->chap_out_idx = le16_to_cpu(fw_ddb_entry->chap_tbl_idx);
3538         sess->tsid = le16_to_cpu(fw_ddb_entry->tsid);
3539
3540         sess->default_taskmgmt_timeout =
3541                                 le16_to_cpu(fw_ddb_entry->def_timeout);
3542         conn->port = le16_to_cpu(fw_ddb_entry->port);
3543
3544         options = le16_to_cpu(fw_ddb_entry->options);
3545         conn->ipaddress = kzalloc(IPv6_ADDR_LEN, GFP_KERNEL);
3546         if (!conn->ipaddress) {
3547                 rc = -ENOMEM;
3548                 goto exit_copy;
3549         }
3550
3551         conn->redirect_ipaddr = kzalloc(IPv6_ADDR_LEN, GFP_KERNEL);
3552         if (!conn->redirect_ipaddr) {
3553                 rc = -ENOMEM;
3554                 goto exit_copy;
3555         }
3556
3557         memcpy(conn->ipaddress, fw_ddb_entry->ip_addr, IPv6_ADDR_LEN);
3558         memcpy(conn->redirect_ipaddr, fw_ddb_entry->tgt_addr, IPv6_ADDR_LEN);
3559
3560         if (test_bit(OPT_IPV6_DEVICE, &options)) {
3561                 conn->ipv6_traffic_class = fw_ddb_entry->ipv4_tos;
3562
3563                 conn->link_local_ipv6_addr = kmemdup(
3564                                         fw_ddb_entry->link_local_ipv6_addr,
3565                                         IPv6_ADDR_LEN, GFP_KERNEL);
3566                 if (!conn->link_local_ipv6_addr) {
3567                         rc = -ENOMEM;
3568                         goto exit_copy;
3569                 }
3570         } else {
3571                 conn->ipv4_tos = fw_ddb_entry->ipv4_tos;
3572         }
3573
3574         if (fw_ddb_entry->iscsi_name[0]) {
3575                 rc = iscsi_switch_str_param(&sess->targetname,
3576                                             (char *)fw_ddb_entry->iscsi_name);
3577                 if (rc)
3578                         goto exit_copy;
3579         }
3580
3581         if (fw_ddb_entry->iscsi_alias[0]) {
3582                 rc = iscsi_switch_str_param(&sess->targetalias,
3583                                             (char *)fw_ddb_entry->iscsi_alias);
3584                 if (rc)
3585                         goto exit_copy;
3586         }
3587
3588         COPY_ISID(sess->isid, fw_ddb_entry->isid);
3589
3590 exit_copy:
3591         return rc;
3592 }
3593
3594 static int qla4xxx_copy_to_fwddb_param(struct iscsi_bus_flash_session *sess,
3595                                        struct iscsi_bus_flash_conn *conn,
3596                                        struct dev_db_entry *fw_ddb_entry)
3597 {
3598         uint16_t options;
3599         int rc = 0;
3600
3601         options = le16_to_cpu(fw_ddb_entry->options);
3602         SET_BITVAL(conn->is_fw_assigned_ipv6,  options, BIT_11);
3603         if (!strncmp(sess->portal_type, PORTAL_TYPE_IPV6, 4))
3604                 options |= BIT_8;
3605         else
3606                 options &= ~BIT_8;
3607
3608         SET_BITVAL(sess->auto_snd_tgt_disable, options, BIT_6);
3609         SET_BITVAL(sess->discovery_sess, options, BIT_4);
3610         SET_BITVAL(sess->entry_state, options, BIT_3);
3611         fw_ddb_entry->options = cpu_to_le16(options);
3612
3613         options = le16_to_cpu(fw_ddb_entry->iscsi_options);
3614         SET_BITVAL(conn->hdrdgst_en, options, BIT_13);
3615         SET_BITVAL(conn->datadgst_en, options, BIT_12);
3616         SET_BITVAL(sess->imm_data_en, options, BIT_11);
3617         SET_BITVAL(sess->initial_r2t_en, options, BIT_10);
3618         SET_BITVAL(sess->dataseq_inorder_en, options, BIT_9);
3619         SET_BITVAL(sess->pdu_inorder_en, options, BIT_8);
3620         SET_BITVAL(sess->chap_auth_en, options, BIT_7);
3621         SET_BITVAL(conn->snack_req_en, options, BIT_6);
3622         SET_BITVAL(sess->discovery_logout_en, options, BIT_5);
3623         SET_BITVAL(sess->bidi_chap_en, options, BIT_4);
3624         SET_BITVAL(sess->discovery_auth_optional, options, BIT_3);
3625         SET_BITVAL(sess->erl & BIT_1, options, BIT_1);
3626         SET_BITVAL(sess->erl & BIT_0, options, BIT_0);
3627         fw_ddb_entry->iscsi_options = cpu_to_le16(options);
3628
3629         options = le16_to_cpu(fw_ddb_entry->tcp_options);
3630         SET_BITVAL(conn->tcp_timestamp_stat, options, BIT_6);
3631         SET_BITVAL(conn->tcp_nagle_disable, options, BIT_5);
3632         SET_BITVAL(conn->tcp_wsf_disable, options, BIT_4);
3633         SET_BITVAL(conn->tcp_timer_scale & BIT_2, options, BIT_3);
3634         SET_BITVAL(conn->tcp_timer_scale & BIT_1, options, BIT_2);
3635         SET_BITVAL(conn->tcp_timer_scale & BIT_0, options, BIT_1);
3636         SET_BITVAL(conn->tcp_timestamp_en, options, BIT_0);
3637         fw_ddb_entry->tcp_options = cpu_to_le16(options);
3638
3639         options = le16_to_cpu(fw_ddb_entry->ip_options);
3640         SET_BITVAL(conn->fragment_disable, options, BIT_4);
3641         fw_ddb_entry->ip_options = cpu_to_le16(options);
3642
3643         fw_ddb_entry->iscsi_max_outsnd_r2t = cpu_to_le16(sess->max_r2t);
3644         fw_ddb_entry->iscsi_max_rcv_data_seg_len =
3645                                cpu_to_le16(conn->max_recv_dlength / BYTE_UNITS);
3646         fw_ddb_entry->iscsi_max_snd_data_seg_len =
3647                                cpu_to_le16(conn->max_xmit_dlength / BYTE_UNITS);
3648         fw_ddb_entry->iscsi_first_burst_len =
3649                                 cpu_to_le16(sess->first_burst / BYTE_UNITS);
3650         fw_ddb_entry->iscsi_max_burst_len = cpu_to_le16(sess->max_burst /
3651                                             BYTE_UNITS);
3652         fw_ddb_entry->iscsi_def_time2wait = cpu_to_le16(sess->time2wait);
3653         fw_ddb_entry->iscsi_def_time2retain = cpu_to_le16(sess->time2retain);
3654         fw_ddb_entry->tgt_portal_grp = cpu_to_le16(sess->tpgt);
3655         fw_ddb_entry->mss = cpu_to_le16(conn->max_segment_size);
3656         fw_ddb_entry->tcp_xmt_wsf = (uint8_t) cpu_to_le32(conn->tcp_xmit_wsf);
3657         fw_ddb_entry->tcp_rcv_wsf = (uint8_t) cpu_to_le32(conn->tcp_recv_wsf);
3658         fw_ddb_entry->ipv6_flow_lbl = cpu_to_le16(conn->ipv6_flow_label);
3659         fw_ddb_entry->ka_timeout = cpu_to_le16(conn->keepalive_timeout);
3660         fw_ddb_entry->lcl_port = cpu_to_le16(conn->local_port);
3661         fw_ddb_entry->stat_sn = cpu_to_le32(conn->statsn);
3662         fw_ddb_entry->exp_stat_sn = cpu_to_le32(conn->exp_statsn);
3663         fw_ddb_entry->ddb_link = cpu_to_le16(sess->discovery_parent_idx);
3664         fw_ddb_entry->chap_tbl_idx = cpu_to_le16(sess->chap_out_idx);
3665         fw_ddb_entry->tsid = cpu_to_le16(sess->tsid);
3666         fw_ddb_entry->port = cpu_to_le16(conn->port);
3667         fw_ddb_entry->def_timeout =
3668                                 cpu_to_le16(sess->default_taskmgmt_timeout);
3669
3670         if (!strncmp(sess->portal_type, PORTAL_TYPE_IPV6, 4))
3671                 fw_ddb_entry->ipv4_tos = conn->ipv6_traffic_class;
3672         else
3673                 fw_ddb_entry->ipv4_tos = conn->ipv4_tos;
3674
3675         if (conn->ipaddress)
3676                 memcpy(fw_ddb_entry->ip_addr, conn->ipaddress,
3677                        sizeof(fw_ddb_entry->ip_addr));
3678
3679         if (conn->redirect_ipaddr)
3680                 memcpy(fw_ddb_entry->tgt_addr, conn->redirect_ipaddr,
3681                        sizeof(fw_ddb_entry->tgt_addr));
3682
3683         if (conn->link_local_ipv6_addr)
3684                 memcpy(fw_ddb_entry->link_local_ipv6_addr,
3685                        conn->link_local_ipv6_addr,
3686                        sizeof(fw_ddb_entry->link_local_ipv6_addr));
3687
3688         if (sess->targetname)
3689                 memcpy(fw_ddb_entry->iscsi_name, sess->targetname,
3690                        sizeof(fw_ddb_entry->iscsi_name));
3691
3692         if (sess->targetalias)
3693                 memcpy(fw_ddb_entry->iscsi_alias, sess->targetalias,
3694                        sizeof(fw_ddb_entry->iscsi_alias));
3695
3696         COPY_ISID(fw_ddb_entry->isid, sess->isid);
3697
3698         return rc;
3699 }
3700
3701 static void qla4xxx_copy_to_sess_conn_params(struct iscsi_conn *conn,
3702                                              struct iscsi_session *sess,
3703                                              struct dev_db_entry *fw_ddb_entry)
3704 {
3705         unsigned long options = 0;
3706         uint16_t ddb_link;
3707         uint16_t disc_parent;
3708         char ip_addr[DDB_IPADDR_LEN];
3709
3710         options = le16_to_cpu(fw_ddb_entry->options);
3711         conn->is_fw_assigned_ipv6 = test_bit(OPT_IS_FW_ASSIGNED_IPV6, &options);
3712         sess->auto_snd_tgt_disable = test_bit(OPT_AUTO_SENDTGTS_DISABLE,
3713                                               &options);
3714         sess->discovery_sess = test_bit(OPT_DISC_SESSION, &options);
3715
3716         options = le16_to_cpu(fw_ddb_entry->iscsi_options);
3717         conn->hdrdgst_en = test_bit(ISCSIOPT_HEADER_DIGEST_EN, &options);
3718         conn->datadgst_en = test_bit(ISCSIOPT_DATA_DIGEST_EN, &options);
3719         sess->imm_data_en = test_bit(ISCSIOPT_IMMEDIATE_DATA_EN, &options);
3720         sess->initial_r2t_en = test_bit(ISCSIOPT_INITIAL_R2T_EN, &options);
3721         sess->dataseq_inorder_en = test_bit(ISCSIOPT_DATA_SEQ_IN_ORDER,
3722                                             &options);
3723         sess->pdu_inorder_en = test_bit(ISCSIOPT_DATA_PDU_IN_ORDER, &options);
3724         sess->chap_auth_en = test_bit(ISCSIOPT_CHAP_AUTH_EN, &options);
3725         sess->discovery_logout_en = test_bit(ISCSIOPT_DISCOVERY_LOGOUT_EN,
3726                                              &options);
3727         sess->bidi_chap_en = test_bit(ISCSIOPT_BIDI_CHAP_EN, &options);
3728         sess->discovery_auth_optional =
3729                         test_bit(ISCSIOPT_DISCOVERY_AUTH_OPTIONAL, &options);
3730         if (test_bit(ISCSIOPT_ERL1, &options))
3731                 sess->erl |= BIT_1;
3732         if (test_bit(ISCSIOPT_ERL0, &options))
3733                 sess->erl |= BIT_0;
3734
3735         options = le16_to_cpu(fw_ddb_entry->tcp_options);
3736         conn->tcp_timestamp_stat = test_bit(TCPOPT_TIMESTAMP_STAT, &options);
3737         conn->tcp_nagle_disable = test_bit(TCPOPT_NAGLE_DISABLE, &options);
3738         conn->tcp_wsf_disable = test_bit(TCPOPT_WSF_DISABLE, &options);
3739         if (test_bit(TCPOPT_TIMER_SCALE3, &options))
3740                 conn->tcp_timer_scale |= BIT_3;
3741         if (test_bit(TCPOPT_TIMER_SCALE2, &options))
3742                 conn->tcp_timer_scale |= BIT_2;
3743         if (test_bit(TCPOPT_TIMER_SCALE1, &options))
3744                 conn->tcp_timer_scale |= BIT_1;
3745
3746         conn->tcp_timer_scale >>= 1;
3747         conn->tcp_timestamp_en = test_bit(TCPOPT_TIMESTAMP_EN, &options);
3748
3749         options = le16_to_cpu(fw_ddb_entry->ip_options);
3750         conn->fragment_disable = test_bit(IPOPT_FRAGMENT_DISABLE, &options);
3751
3752         conn->max_recv_dlength = BYTE_UNITS *
3753                           le16_to_cpu(fw_ddb_entry->iscsi_max_rcv_data_seg_len);
3754         conn->max_xmit_dlength = BYTE_UNITS *
3755                           le16_to_cpu(fw_ddb_entry->iscsi_max_snd_data_seg_len);
3756         sess->max_r2t = le16_to_cpu(fw_ddb_entry->iscsi_max_outsnd_r2t);
3757         sess->first_burst = BYTE_UNITS *
3758                                le16_to_cpu(fw_ddb_entry->iscsi_first_burst_len);
3759         sess->max_burst = BYTE_UNITS *
3760                                  le16_to_cpu(fw_ddb_entry->iscsi_max_burst_len);
3761         sess->time2wait = le16_to_cpu(fw_ddb_entry->iscsi_def_time2wait);
3762         sess->time2retain = le16_to_cpu(fw_ddb_entry->iscsi_def_time2retain);
3763         sess->tpgt = le32_to_cpu(fw_ddb_entry->tgt_portal_grp);
3764         conn->max_segment_size = le16_to_cpu(fw_ddb_entry->mss);
3765         conn->tcp_xmit_wsf = fw_ddb_entry->tcp_xmt_wsf;
3766         conn->tcp_recv_wsf = fw_ddb_entry->tcp_rcv_wsf;
3767         conn->ipv4_tos = fw_ddb_entry->ipv4_tos;
3768         conn->keepalive_tmo = le16_to_cpu(fw_ddb_entry->ka_timeout);
3769         conn->local_port = le16_to_cpu(fw_ddb_entry->lcl_port);
3770         conn->statsn = le32_to_cpu(fw_ddb_entry->stat_sn);
3771         conn->exp_statsn = le32_to_cpu(fw_ddb_entry->exp_stat_sn);
3772         sess->tsid = le16_to_cpu(fw_ddb_entry->tsid);
3773         COPY_ISID(sess->isid, fw_ddb_entry->isid);
3774
3775         ddb_link = le16_to_cpu(fw_ddb_entry->ddb_link);
3776         if (ddb_link == DDB_ISNS)
3777                 disc_parent = ISCSI_DISC_PARENT_ISNS;
3778         else if (ddb_link == DDB_NO_LINK)
3779                 disc_parent = ISCSI_DISC_PARENT_UNKNOWN;
3780         else if (ddb_link < MAX_DDB_ENTRIES)
3781                 disc_parent = ISCSI_DISC_PARENT_SENDTGT;
3782         else
3783                 disc_parent = ISCSI_DISC_PARENT_UNKNOWN;
3784
3785         iscsi_set_param(conn->cls_conn, ISCSI_PARAM_DISCOVERY_PARENT_TYPE,
3786                         iscsi_get_discovery_parent_name(disc_parent), 0);
3787
3788         iscsi_set_param(conn->cls_conn, ISCSI_PARAM_TARGET_ALIAS,
3789                         (char *)fw_ddb_entry->iscsi_alias, 0);
3790
3791         options = le16_to_cpu(fw_ddb_entry->options);
3792         if (options & DDB_OPT_IPV6_DEVICE) {
3793                 memset(ip_addr, 0, sizeof(ip_addr));
3794                 sprintf(ip_addr, "%pI6", fw_ddb_entry->link_local_ipv6_addr);
3795                 iscsi_set_param(conn->cls_conn, ISCSI_PARAM_LOCAL_IPADDR,
3796                                 (char *)ip_addr, 0);
3797         }
3798 }
3799
3800 static void qla4xxx_copy_fwddb_param(struct scsi_qla_host *ha,
3801                                      struct dev_db_entry *fw_ddb_entry,
3802                                      struct iscsi_cls_session *cls_sess,
3803                                      struct iscsi_cls_conn *cls_conn)
3804 {
3805         int buflen = 0;
3806         struct iscsi_session *sess;
3807         struct ddb_entry *ddb_entry;
3808         struct ql4_chap_table chap_tbl;
3809         struct iscsi_conn *conn;
3810         char ip_addr[DDB_IPADDR_LEN];
3811         uint16_t options = 0;
3812
3813         sess = cls_sess->dd_data;
3814         ddb_entry = sess->dd_data;
3815         conn = cls_conn->dd_data;
3816         memset(&chap_tbl, 0, sizeof(chap_tbl));
3817
3818         ddb_entry->chap_tbl_idx = le16_to_cpu(fw_ddb_entry->chap_tbl_idx);
3819
3820         qla4xxx_copy_to_sess_conn_params(conn, sess, fw_ddb_entry);
3821
3822         sess->def_taskmgmt_tmo = le16_to_cpu(fw_ddb_entry->def_timeout);
3823         conn->persistent_port = le16_to_cpu(fw_ddb_entry->port);
3824
3825         memset(ip_addr, 0, sizeof(ip_addr));
3826         options = le16_to_cpu(fw_ddb_entry->options);
3827         if (options & DDB_OPT_IPV6_DEVICE) {
3828                 iscsi_set_param(cls_conn, ISCSI_PARAM_PORTAL_TYPE, "ipv6", 4);
3829
3830                 memset(ip_addr, 0, sizeof(ip_addr));
3831                 sprintf(ip_addr, "%pI6", fw_ddb_entry->ip_addr);
3832         } else {
3833                 iscsi_set_param(cls_conn, ISCSI_PARAM_PORTAL_TYPE, "ipv4", 4);
3834                 sprintf(ip_addr, "%pI4", fw_ddb_entry->ip_addr);
3835         }
3836
3837         iscsi_set_param(cls_conn, ISCSI_PARAM_PERSISTENT_ADDRESS,
3838                         (char *)ip_addr, buflen);
3839         iscsi_set_param(cls_conn, ISCSI_PARAM_TARGET_NAME,
3840                         (char *)fw_ddb_entry->iscsi_name, buflen);
3841         iscsi_set_param(cls_conn, ISCSI_PARAM_INITIATOR_NAME,
3842                         (char *)ha->name_string, buflen);
3843
3844         if (ddb_entry->chap_tbl_idx != INVALID_ENTRY) {
3845                 if (!qla4xxx_get_uni_chap_at_index(ha, chap_tbl.name,
3846                                                    chap_tbl.secret,
3847                                                    ddb_entry->chap_tbl_idx)) {
3848                         iscsi_set_param(cls_conn, ISCSI_PARAM_USERNAME,
3849                                         (char *)chap_tbl.name,
3850                                         strlen((char *)chap_tbl.name));
3851                         iscsi_set_param(cls_conn, ISCSI_PARAM_PASSWORD,
3852                                         (char *)chap_tbl.secret,
3853                                         chap_tbl.secret_len);
3854                 }
3855         }
3856 }
3857
3858 void qla4xxx_update_session_conn_fwddb_param(struct scsi_qla_host *ha,
3859                                              struct ddb_entry *ddb_entry)
3860 {
3861         struct iscsi_cls_session *cls_sess;
3862         struct iscsi_cls_conn *cls_conn;
3863         uint32_t ddb_state;
3864         dma_addr_t fw_ddb_entry_dma;
3865         struct dev_db_entry *fw_ddb_entry;
3866
3867         fw_ddb_entry = dma_alloc_coherent(&ha->pdev->dev, sizeof(*fw_ddb_entry),
3868                                           &fw_ddb_entry_dma, GFP_KERNEL);
3869         if (!fw_ddb_entry) {
3870                 ql4_printk(KERN_ERR, ha,
3871                            "%s: Unable to allocate dma buffer\n", __func__);
3872                 goto exit_session_conn_fwddb_param;
3873         }
3874
3875         if (qla4xxx_get_fwddb_entry(ha, ddb_entry->fw_ddb_index, fw_ddb_entry,
3876                                     fw_ddb_entry_dma, NULL, NULL, &ddb_state,
3877                                     NULL, NULL, NULL) == QLA_ERROR) {
3878                 DEBUG2(ql4_printk(KERN_ERR, ha, "scsi%ld: %s: failed "
3879                                   "get_ddb_entry for fw_ddb_index %d\n",
3880                                   ha->host_no, __func__,
3881                                   ddb_entry->fw_ddb_index));
3882                 goto exit_session_conn_fwddb_param;
3883         }
3884
3885         cls_sess = ddb_entry->sess;
3886
3887         cls_conn = ddb_entry->conn;
3888
3889         /* Update params */
3890         qla4xxx_copy_fwddb_param(ha, fw_ddb_entry, cls_sess, cls_conn);
3891
3892 exit_session_conn_fwddb_param:
3893         if (fw_ddb_entry)
3894                 dma_free_coherent(&ha->pdev->dev, sizeof(*fw_ddb_entry),
3895                                   fw_ddb_entry, fw_ddb_entry_dma);
3896 }
3897
3898 void qla4xxx_update_session_conn_param(struct scsi_qla_host *ha,
3899                                        struct ddb_entry *ddb_entry)
3900 {
3901         struct iscsi_cls_session *cls_sess;
3902         struct iscsi_cls_conn *cls_conn;
3903         struct iscsi_session *sess;
3904         struct iscsi_conn *conn;
3905         uint32_t ddb_state;
3906         dma_addr_t fw_ddb_entry_dma;
3907         struct dev_db_entry *fw_ddb_entry;
3908
3909         fw_ddb_entry = dma_alloc_coherent(&ha->pdev->dev, sizeof(*fw_ddb_entry),
3910                                           &fw_ddb_entry_dma, GFP_KERNEL);
3911         if (!fw_ddb_entry) {
3912                 ql4_printk(KERN_ERR, ha,
3913                            "%s: Unable to allocate dma buffer\n", __func__);
3914                 goto exit_session_conn_param;
3915         }
3916
3917         if (qla4xxx_get_fwddb_entry(ha, ddb_entry->fw_ddb_index, fw_ddb_entry,
3918                                     fw_ddb_entry_dma, NULL, NULL, &ddb_state,
3919                                     NULL, NULL, NULL) == QLA_ERROR) {
3920                 DEBUG2(ql4_printk(KERN_ERR, ha, "scsi%ld: %s: failed "
3921                                   "get_ddb_entry for fw_ddb_index %d\n",
3922                                   ha->host_no, __func__,
3923                                   ddb_entry->fw_ddb_index));
3924                 goto exit_session_conn_param;
3925         }
3926
3927         cls_sess = ddb_entry->sess;
3928         sess = cls_sess->dd_data;
3929
3930         cls_conn = ddb_entry->conn;
3931         conn = cls_conn->dd_data;
3932
3933         /* Update timers after login */
3934         ddb_entry->default_relogin_timeout =
3935                 (le16_to_cpu(fw_ddb_entry->def_timeout) > LOGIN_TOV) &&
3936                  (le16_to_cpu(fw_ddb_entry->def_timeout) < LOGIN_TOV * 10) ?
3937                  le16_to_cpu(fw_ddb_entry->def_timeout) : LOGIN_TOV;
3938         ddb_entry->default_time2wait =
3939                                 le16_to_cpu(fw_ddb_entry->iscsi_def_time2wait);
3940
3941         /* Update params */
3942         ddb_entry->chap_tbl_idx = le16_to_cpu(fw_ddb_entry->chap_tbl_idx);
3943         qla4xxx_copy_to_sess_conn_params(conn, sess, fw_ddb_entry);
3944
3945         memcpy(sess->initiatorname, ha->name_string,
3946                min(sizeof(ha->name_string), sizeof(sess->initiatorname)));
3947
3948 exit_session_conn_param:
3949         if (fw_ddb_entry)
3950                 dma_free_coherent(&ha->pdev->dev, sizeof(*fw_ddb_entry),
3951                                   fw_ddb_entry, fw_ddb_entry_dma);
3952 }
3953
3954 /*
3955  * Timer routines
3956  */
3957 static void qla4xxx_timer(struct timer_list *t);
3958
3959 static void qla4xxx_start_timer(struct scsi_qla_host *ha,
3960                                 unsigned long interval)
3961 {
3962         DEBUG(printk("scsi: %s: Starting timer thread for adapter %d\n",
3963                      __func__, ha->host->host_no));
3964         timer_setup(&ha->timer, qla4xxx_timer, 0);
3965         ha->timer.expires = jiffies + interval * HZ;
3966         add_timer(&ha->timer);
3967         ha->timer_active = 1;
3968 }
3969
3970 static void qla4xxx_stop_timer(struct scsi_qla_host *ha)
3971 {
3972         del_timer_sync(&ha->timer);
3973         ha->timer_active = 0;
3974 }
3975
3976 /***
3977  * qla4xxx_mark_device_missing - blocks the session
3978  * @cls_session: Pointer to the session to be blocked
3979  * @ddb_entry: Pointer to device database entry
3980  *
3981  * This routine marks a device missing and close connection.
3982  **/
3983 void qla4xxx_mark_device_missing(struct iscsi_cls_session *cls_session)
3984 {
3985         iscsi_block_session(cls_session);
3986 }
3987
3988 /**
3989  * qla4xxx_mark_all_devices_missing - mark all devices as missing.
3990  * @ha: Pointer to host adapter structure.
3991  *
3992  * This routine marks a device missing and resets the relogin retry count.
3993  **/
3994 void qla4xxx_mark_all_devices_missing(struct scsi_qla_host *ha)
3995 {
3996         iscsi_host_for_each_session(ha->host, qla4xxx_mark_device_missing);
3997 }
3998
3999 static struct srb* qla4xxx_get_new_srb(struct scsi_qla_host *ha,
4000                                        struct ddb_entry *ddb_entry,
4001                                        struct scsi_cmnd *cmd)
4002 {
4003         struct srb *srb;
4004
4005         srb = mempool_alloc(ha->srb_mempool, GFP_ATOMIC);
4006         if (!srb)
4007                 return srb;
4008
4009         kref_init(&srb->srb_ref);
4010         srb->ha = ha;
4011         srb->ddb = ddb_entry;
4012         srb->cmd = cmd;
4013         srb->flags = 0;
4014         CMD_SP(cmd) = (void *)srb;
4015
4016         return srb;
4017 }
4018
4019 static void qla4xxx_srb_free_dma(struct scsi_qla_host *ha, struct srb *srb)
4020 {
4021         struct scsi_cmnd *cmd = srb->cmd;
4022
4023         if (srb->flags & SRB_DMA_VALID) {
4024                 scsi_dma_unmap(cmd);
4025                 srb->flags &= ~SRB_DMA_VALID;
4026         }
4027         CMD_SP(cmd) = NULL;
4028 }
4029
4030 void qla4xxx_srb_compl(struct kref *ref)
4031 {
4032         struct srb *srb = container_of(ref, struct srb, srb_ref);
4033         struct scsi_cmnd *cmd = srb->cmd;
4034         struct scsi_qla_host *ha = srb->ha;
4035
4036         qla4xxx_srb_free_dma(ha, srb);
4037
4038         mempool_free(srb, ha->srb_mempool);
4039
4040         cmd->scsi_done(cmd);
4041 }
4042
4043 /**
4044  * qla4xxx_queuecommand - scsi layer issues scsi command to driver.
4045  * @host: scsi host
4046  * @cmd: Pointer to Linux's SCSI command structure
4047  *
4048  * Remarks:
4049  * This routine is invoked by Linux to send a SCSI command to the driver.
4050  * The mid-level driver tries to ensure that queuecommand never gets
4051  * invoked concurrently with itself or the interrupt handler (although
4052  * the interrupt handler may call this routine as part of request-
4053  * completion handling).   Unfortunely, it sometimes calls the scheduler
4054  * in interrupt context which is a big NO! NO!.
4055  **/
4056 static int qla4xxx_queuecommand(struct Scsi_Host *host, struct scsi_cmnd *cmd)
4057 {
4058         struct scsi_qla_host *ha = to_qla_host(host);
4059         struct ddb_entry *ddb_entry = cmd->device->hostdata;
4060         struct iscsi_cls_session *sess = ddb_entry->sess;
4061         struct srb *srb;
4062         int rval;
4063
4064         if (test_bit(AF_EEH_BUSY, &ha->flags)) {
4065                 if (test_bit(AF_PCI_CHANNEL_IO_PERM_FAILURE, &ha->flags))
4066                         cmd->result = DID_NO_CONNECT << 16;
4067                 else
4068                         cmd->result = DID_REQUEUE << 16;
4069                 goto qc_fail_command;
4070         }
4071
4072         if (!sess) {
4073                 cmd->result = DID_IMM_RETRY << 16;
4074                 goto qc_fail_command;
4075         }
4076
4077         rval = iscsi_session_chkready(sess);
4078         if (rval) {
4079                 cmd->result = rval;
4080                 goto qc_fail_command;
4081         }
4082
4083         if (test_bit(DPC_RESET_HA_INTR, &ha->dpc_flags) ||
4084             test_bit(DPC_RESET_ACTIVE, &ha->dpc_flags) ||
4085             test_bit(DPC_RESET_HA, &ha->dpc_flags) ||
4086             test_bit(DPC_HA_UNRECOVERABLE, &ha->dpc_flags) ||
4087             test_bit(DPC_HA_NEED_QUIESCENT, &ha->dpc_flags) ||
4088             !test_bit(AF_ONLINE, &ha->flags) ||
4089             !test_bit(AF_LINK_UP, &ha->flags) ||
4090             test_bit(AF_LOOPBACK, &ha->flags) ||
4091             test_bit(DPC_POST_IDC_ACK, &ha->dpc_flags) ||
4092             test_bit(DPC_RESTORE_ACB, &ha->dpc_flags) ||
4093             test_bit(DPC_RESET_HA_FW_CONTEXT, &ha->dpc_flags))
4094                 goto qc_host_busy;
4095
4096         srb = qla4xxx_get_new_srb(ha, ddb_entry, cmd);
4097         if (!srb)
4098                 goto qc_host_busy;
4099
4100         rval = qla4xxx_send_command_to_isp(ha, srb);
4101         if (rval != QLA_SUCCESS)
4102                 goto qc_host_busy_free_sp;
4103
4104         return 0;
4105
4106 qc_host_busy_free_sp:
4107         qla4xxx_srb_free_dma(ha, srb);
4108         mempool_free(srb, ha->srb_mempool);
4109
4110 qc_host_busy:
4111         return SCSI_MLQUEUE_HOST_BUSY;
4112
4113 qc_fail_command:
4114         cmd->scsi_done(cmd);
4115
4116         return 0;
4117 }
4118
4119 /**
4120  * qla4xxx_mem_free - frees memory allocated to adapter
4121  * @ha: Pointer to host adapter structure.
4122  *
4123  * Frees memory previously allocated by qla4xxx_mem_alloc
4124  **/
4125 static void qla4xxx_mem_free(struct scsi_qla_host *ha)
4126 {
4127         if (ha->queues)
4128                 dma_free_coherent(&ha->pdev->dev, ha->queues_len, ha->queues,
4129                                   ha->queues_dma);
4130
4131          if (ha->fw_dump)
4132                 vfree(ha->fw_dump);
4133
4134         ha->queues_len = 0;
4135         ha->queues = NULL;
4136         ha->queues_dma = 0;
4137         ha->request_ring = NULL;
4138         ha->request_dma = 0;
4139         ha->response_ring = NULL;
4140         ha->response_dma = 0;
4141         ha->shadow_regs = NULL;
4142         ha->shadow_regs_dma = 0;
4143         ha->fw_dump = NULL;
4144         ha->fw_dump_size = 0;
4145
4146         /* Free srb pool. */
4147         if (ha->srb_mempool)
4148                 mempool_destroy(ha->srb_mempool);
4149
4150         ha->srb_mempool = NULL;
4151
4152         if (ha->chap_dma_pool)
4153                 dma_pool_destroy(ha->chap_dma_pool);
4154
4155         if (ha->chap_list)
4156                 vfree(ha->chap_list);
4157         ha->chap_list = NULL;
4158
4159         if (ha->fw_ddb_dma_pool)
4160                 dma_pool_destroy(ha->fw_ddb_dma_pool);
4161
4162         /* release io space registers  */
4163         if (is_qla8022(ha)) {
4164                 if (ha->nx_pcibase)
4165                         iounmap(
4166                             (struct device_reg_82xx __iomem *)ha->nx_pcibase);
4167         } else if (is_qla8032(ha) || is_qla8042(ha)) {
4168                 if (ha->nx_pcibase)
4169                         iounmap(
4170                             (struct device_reg_83xx __iomem *)ha->nx_pcibase);
4171         } else if (ha->reg) {
4172                 iounmap(ha->reg);
4173         }
4174
4175         if (ha->reset_tmplt.buff)
4176                 vfree(ha->reset_tmplt.buff);
4177
4178         pci_release_regions(ha->pdev);
4179 }
4180
4181 /**
4182  * qla4xxx_mem_alloc - allocates memory for use by adapter.
4183  * @ha: Pointer to host adapter structure
4184  *
4185  * Allocates DMA memory for request and response queues. Also allocates memory
4186  * for srbs.
4187  **/
4188 static int qla4xxx_mem_alloc(struct scsi_qla_host *ha)
4189 {
4190         unsigned long align;
4191
4192         /* Allocate contiguous block of DMA memory for queues. */
4193         ha->queues_len = ((REQUEST_QUEUE_DEPTH * QUEUE_SIZE) +
4194                           (RESPONSE_QUEUE_DEPTH * QUEUE_SIZE) +
4195                           sizeof(struct shadow_regs) +
4196                           MEM_ALIGN_VALUE +
4197                           (PAGE_SIZE - 1)) & ~(PAGE_SIZE - 1);
4198         ha->queues = dma_zalloc_coherent(&ha->pdev->dev, ha->queues_len,
4199                                          &ha->queues_dma, GFP_KERNEL);
4200         if (ha->queues == NULL) {
4201                 ql4_printk(KERN_WARNING, ha,
4202                     "Memory Allocation failed - queues.\n");
4203
4204                 goto mem_alloc_error_exit;
4205         }
4206
4207         /*
4208          * As per RISC alignment requirements -- the bus-address must be a
4209          * multiple of the request-ring size (in bytes).
4210          */
4211         align = 0;
4212         if ((unsigned long)ha->queues_dma & (MEM_ALIGN_VALUE - 1))
4213                 align = MEM_ALIGN_VALUE - ((unsigned long)ha->queues_dma &
4214                                            (MEM_ALIGN_VALUE - 1));
4215
4216         /* Update request and response queue pointers. */
4217         ha->request_dma = ha->queues_dma + align;
4218         ha->request_ring = (struct queue_entry *) (ha->queues + align);
4219         ha->response_dma = ha->queues_dma + align +
4220                 (REQUEST_QUEUE_DEPTH * QUEUE_SIZE);
4221         ha->response_ring = (struct queue_entry *) (ha->queues + align +
4222                                                     (REQUEST_QUEUE_DEPTH *
4223                                                      QUEUE_SIZE));
4224         ha->shadow_regs_dma = ha->queues_dma + align +
4225                 (REQUEST_QUEUE_DEPTH * QUEUE_SIZE) +
4226                 (RESPONSE_QUEUE_DEPTH * QUEUE_SIZE);
4227         ha->shadow_regs = (struct shadow_regs *) (ha->queues + align +
4228                                                   (REQUEST_QUEUE_DEPTH *
4229                                                    QUEUE_SIZE) +
4230                                                   (RESPONSE_QUEUE_DEPTH *
4231                                                    QUEUE_SIZE));
4232
4233         /* Allocate memory for srb pool. */
4234         ha->srb_mempool = mempool_create(SRB_MIN_REQ, mempool_alloc_slab,
4235                                          mempool_free_slab, srb_cachep);
4236         if (ha->srb_mempool == NULL) {
4237                 ql4_printk(KERN_WARNING, ha,
4238                     "Memory Allocation failed - SRB Pool.\n");
4239
4240                 goto mem_alloc_error_exit;
4241         }
4242
4243         ha->chap_dma_pool = dma_pool_create("ql4_chap", &ha->pdev->dev,
4244                                             CHAP_DMA_BLOCK_SIZE, 8, 0);
4245
4246         if (ha->chap_dma_pool == NULL) {
4247                 ql4_printk(KERN_WARNING, ha,
4248                     "%s: chap_dma_pool allocation failed..\n", __func__);
4249                 goto mem_alloc_error_exit;
4250         }
4251
4252         ha->fw_ddb_dma_pool = dma_pool_create("ql4_fw_ddb", &ha->pdev->dev,
4253                                               DDB_DMA_BLOCK_SIZE, 8, 0);
4254
4255         if (ha->fw_ddb_dma_pool == NULL) {
4256                 ql4_printk(KERN_WARNING, ha,
4257                            "%s: fw_ddb_dma_pool allocation failed..\n",
4258                            __func__);
4259                 goto mem_alloc_error_exit;
4260         }
4261
4262         return QLA_SUCCESS;
4263
4264 mem_alloc_error_exit:
4265         qla4xxx_mem_free(ha);
4266         return QLA_ERROR;
4267 }
4268
4269 /**
4270  * qla4_8xxx_check_temp - Check the ISP82XX temperature.
4271  * @ha: adapter block pointer.
4272  *
4273  * Note: The caller should not hold the idc lock.
4274  **/
4275 static int qla4_8xxx_check_temp(struct scsi_qla_host *ha)
4276 {
4277         uint32_t temp, temp_state, temp_val;
4278         int status = QLA_SUCCESS;
4279
4280         temp = qla4_8xxx_rd_direct(ha, QLA8XXX_CRB_TEMP_STATE);
4281
4282         temp_state = qla82xx_get_temp_state(temp);
4283         temp_val = qla82xx_get_temp_val(temp);
4284
4285         if (temp_state == QLA82XX_TEMP_PANIC) {
4286                 ql4_printk(KERN_WARNING, ha, "Device temperature %d degrees C"
4287                            " exceeds maximum allowed. Hardware has been shut"
4288                            " down.\n", temp_val);
4289                 status = QLA_ERROR;
4290         } else if (temp_state == QLA82XX_TEMP_WARN) {
4291                 if (ha->temperature == QLA82XX_TEMP_NORMAL)
4292                         ql4_printk(KERN_WARNING, ha, "Device temperature %d"
4293                                    " degrees C exceeds operating range."
4294                                    " Immediate action needed.\n", temp_val);
4295         } else {
4296                 if (ha->temperature == QLA82XX_TEMP_WARN)
4297                         ql4_printk(KERN_INFO, ha, "Device temperature is"
4298                                    " now %d degrees C in normal range.\n",
4299                                    temp_val);
4300         }
4301         ha->temperature = temp_state;
4302         return status;
4303 }
4304
4305 /**
4306  * qla4_8xxx_check_fw_alive  - Check firmware health
4307  * @ha: Pointer to host adapter structure.
4308  *
4309  * Context: Interrupt
4310  **/
4311 static int qla4_8xxx_check_fw_alive(struct scsi_qla_host *ha)
4312 {
4313         uint32_t fw_heartbeat_counter;
4314         int status = QLA_SUCCESS;
4315
4316         fw_heartbeat_counter = qla4_8xxx_rd_direct(ha,
4317                                                    QLA8XXX_PEG_ALIVE_COUNTER);
4318         /* If PEG_ALIVE_COUNTER is 0xffffffff, AER/EEH is in progress, ignore */
4319         if (fw_heartbeat_counter == 0xffffffff) {
4320                 DEBUG2(printk(KERN_WARNING "scsi%ld: %s: Device in frozen "
4321                     "state, QLA82XX_PEG_ALIVE_COUNTER is 0xffffffff\n",
4322                     ha->host_no, __func__));
4323                 return status;
4324         }
4325
4326         if (ha->fw_heartbeat_counter == fw_heartbeat_counter) {
4327                 ha->seconds_since_last_heartbeat++;
4328                 /* FW not alive after 2 seconds */
4329                 if (ha->seconds_since_last_heartbeat == 2) {
4330                         ha->seconds_since_last_heartbeat = 0;
4331                         qla4_8xxx_dump_peg_reg(ha);
4332                         status = QLA_ERROR;
4333                 }
4334         } else
4335                 ha->seconds_since_last_heartbeat = 0;
4336
4337         ha->fw_heartbeat_counter = fw_heartbeat_counter;
4338         return status;
4339 }
4340
4341 static void qla4_8xxx_process_fw_error(struct scsi_qla_host *ha)
4342 {
4343         uint32_t halt_status;
4344         int halt_status_unrecoverable = 0;
4345
4346         halt_status = qla4_8xxx_rd_direct(ha, QLA8XXX_PEG_HALT_STATUS1);
4347
4348         if (is_qla8022(ha)) {
4349                 ql4_printk(KERN_INFO, ha, "%s: disabling pause transmit on port 0 & 1.\n",
4350                            __func__);
4351                 qla4_82xx_wr_32(ha, QLA82XX_CRB_NIU + 0x98,
4352                                 CRB_NIU_XG_PAUSE_CTL_P0 |
4353                                 CRB_NIU_XG_PAUSE_CTL_P1);
4354
4355                 if (QLA82XX_FWERROR_CODE(halt_status) == 0x67)
4356                         ql4_printk(KERN_ERR, ha, "%s: Firmware aborted with error code 0x00006700. Device is being reset\n",
4357                                    __func__);
4358                 if (halt_status & HALT_STATUS_UNRECOVERABLE)
4359                         halt_status_unrecoverable = 1;
4360         } else if (is_qla8032(ha) || is_qla8042(ha)) {
4361                 if (halt_status & QLA83XX_HALT_STATUS_FW_RESET)
4362                         ql4_printk(KERN_ERR, ha, "%s: Firmware error detected device is being reset\n",
4363                                    __func__);
4364                 else if (halt_status & QLA83XX_HALT_STATUS_UNRECOVERABLE)
4365                         halt_status_unrecoverable = 1;
4366         }
4367
4368         /*
4369          * Since we cannot change dev_state in interrupt context,
4370          * set appropriate DPC flag then wakeup DPC
4371          */
4372         if (halt_status_unrecoverable) {
4373                 set_bit(DPC_HA_UNRECOVERABLE, &ha->dpc_flags);
4374         } else {
4375                 ql4_printk(KERN_INFO, ha, "%s: detect abort needed!\n",
4376                            __func__);
4377                 set_bit(DPC_RESET_HA, &ha->dpc_flags);
4378         }
4379         qla4xxx_mailbox_premature_completion(ha);
4380         qla4xxx_wake_dpc(ha);
4381 }
4382
4383 /**
4384  * qla4_8xxx_watchdog - Poll dev state
4385  * @ha: Pointer to host adapter structure.
4386  *
4387  * Context: Interrupt
4388  **/
4389 void qla4_8xxx_watchdog(struct scsi_qla_host *ha)
4390 {
4391         uint32_t dev_state;
4392         uint32_t idc_ctrl;
4393
4394         if (is_qla8032(ha) &&
4395             (qla4_83xx_is_detached(ha) == QLA_SUCCESS))
4396                 WARN_ONCE(1, "%s: iSCSI function %d marked invisible\n",
4397                           __func__, ha->func_num);
4398
4399         /* don't poll if reset is going on */
4400         if (!(test_bit(DPC_RESET_ACTIVE, &ha->dpc_flags) ||
4401             test_bit(DPC_RESET_HA, &ha->dpc_flags) ||
4402             test_bit(DPC_RETRY_RESET_HA, &ha->dpc_flags))) {
4403                 dev_state = qla4_8xxx_rd_direct(ha, QLA8XXX_CRB_DEV_STATE);
4404
4405                 if (qla4_8xxx_check_temp(ha)) {
4406                         if (is_qla8022(ha)) {
4407                                 ql4_printk(KERN_INFO, ha, "disabling pause transmit on port 0 & 1.\n");
4408                                 qla4_82xx_wr_32(ha, QLA82XX_CRB_NIU + 0x98,
4409                                                 CRB_NIU_XG_PAUSE_CTL_P0 |
4410                                                 CRB_NIU_XG_PAUSE_CTL_P1);
4411                         }
4412                         set_bit(DPC_HA_UNRECOVERABLE, &ha->dpc_flags);
4413                         qla4xxx_wake_dpc(ha);
4414                 } else if (dev_state == QLA8XXX_DEV_NEED_RESET &&
4415                            !test_bit(DPC_RESET_HA, &ha->dpc_flags)) {
4416
4417                         ql4_printk(KERN_INFO, ha, "%s: HW State: NEED RESET!\n",
4418                                    __func__);
4419
4420                         if (is_qla8032(ha) || is_qla8042(ha)) {
4421                                 idc_ctrl = qla4_83xx_rd_reg(ha,
4422                                                         QLA83XX_IDC_DRV_CTRL);
4423                                 if (!(idc_ctrl & GRACEFUL_RESET_BIT1)) {
4424                                         ql4_printk(KERN_INFO, ha, "%s: Graceful reset bit is not set\n",
4425                                                    __func__);
4426                                         qla4xxx_mailbox_premature_completion(
4427                                                                             ha);
4428                                 }
4429                         }
4430
4431                         if ((is_qla8032(ha) || is_qla8042(ha)) ||
4432                             (is_qla8022(ha) && !ql4xdontresethba)) {
4433                                 set_bit(DPC_RESET_HA, &ha->dpc_flags);
4434                                 qla4xxx_wake_dpc(ha);
4435                         }
4436                 } else if (dev_state == QLA8XXX_DEV_NEED_QUIESCENT &&
4437                     !test_bit(DPC_HA_NEED_QUIESCENT, &ha->dpc_flags)) {
4438                         ql4_printk(KERN_INFO, ha, "%s: HW State: NEED QUIES!\n",
4439                             __func__);
4440                         set_bit(DPC_HA_NEED_QUIESCENT, &ha->dpc_flags);
4441                         qla4xxx_wake_dpc(ha);
4442                 } else  {
4443                         /* Check firmware health */
4444                         if (qla4_8xxx_check_fw_alive(ha))
4445                                 qla4_8xxx_process_fw_error(ha);
4446                 }
4447         }
4448 }
4449
4450 static void qla4xxx_check_relogin_flash_ddb(struct iscsi_cls_session *cls_sess)
4451 {
4452         struct iscsi_session *sess;
4453         struct ddb_entry *ddb_entry;
4454         struct scsi_qla_host *ha;
4455
4456         sess = cls_sess->dd_data;
4457         ddb_entry = sess->dd_data;
4458         ha = ddb_entry->ha;
4459
4460         if (!(ddb_entry->ddb_type == FLASH_DDB))
4461                 return;
4462
4463         if (adapter_up(ha) && !test_bit(DF_RELOGIN, &ddb_entry->flags) &&
4464             !iscsi_is_session_online(cls_sess)) {
4465                 if (atomic_read(&ddb_entry->retry_relogin_timer) !=
4466                     INVALID_ENTRY) {
4467                         if (atomic_read(&ddb_entry->retry_relogin_timer) ==
4468                                         0) {
4469                                 atomic_set(&ddb_entry->retry_relogin_timer,
4470                                            INVALID_ENTRY);
4471                                 set_bit(DPC_RELOGIN_DEVICE, &ha->dpc_flags);
4472                                 set_bit(DF_RELOGIN, &ddb_entry->flags);
4473                                 DEBUG2(ql4_printk(KERN_INFO, ha,
4474                                        "%s: index [%d] login device\n",
4475                                         __func__, ddb_entry->fw_ddb_index));
4476                         } else
4477                                 atomic_dec(&ddb_entry->retry_relogin_timer);
4478                 }
4479         }
4480
4481         /* Wait for relogin to timeout */
4482         if (atomic_read(&ddb_entry->relogin_timer) &&
4483             (atomic_dec_and_test(&ddb_entry->relogin_timer) != 0)) {
4484                 /*
4485                  * If the relogin times out and the device is
4486                  * still NOT ONLINE then try and relogin again.
4487                  */
4488                 if (!iscsi_is_session_online(cls_sess)) {
4489                         /* Reset retry relogin timer */
4490                         atomic_inc(&ddb_entry->relogin_retry_count);
4491                         DEBUG2(ql4_printk(KERN_INFO, ha,
4492                                 "%s: index[%d] relogin timed out-retrying"
4493                                 " relogin (%d), retry (%d)\n", __func__,
4494                                 ddb_entry->fw_ddb_index,
4495                                 atomic_read(&ddb_entry->relogin_retry_count),
4496                                 ddb_entry->default_time2wait + 4));
4497                         set_bit(DPC_RELOGIN_DEVICE, &ha->dpc_flags);
4498                         atomic_set(&ddb_entry->retry_relogin_timer,
4499                                    ddb_entry->default_time2wait + 4);
4500                 }
4501         }
4502 }
4503
4504 /**
4505  * qla4xxx_timer - checks every second for work to do.
4506  * @ha: Pointer to host adapter structure.
4507  **/
4508 static void qla4xxx_timer(struct timer_list *t)
4509 {
4510         struct scsi_qla_host *ha = from_timer(ha, t, timer);
4511         int start_dpc = 0;
4512         uint16_t w;
4513
4514         iscsi_host_for_each_session(ha->host, qla4xxx_check_relogin_flash_ddb);
4515
4516         /* If we are in the middle of AER/EEH processing
4517          * skip any processing and reschedule the timer
4518          */
4519         if (test_bit(AF_EEH_BUSY, &ha->flags)) {
4520                 mod_timer(&ha->timer, jiffies + HZ);
4521                 return;
4522         }
4523
4524         /* Hardware read to trigger an EEH error during mailbox waits. */
4525         if (!pci_channel_offline(ha->pdev))
4526                 pci_read_config_word(ha->pdev, PCI_VENDOR_ID, &w);
4527
4528         if (is_qla80XX(ha))
4529                 qla4_8xxx_watchdog(ha);
4530
4531         if (is_qla40XX(ha)) {
4532                 /* Check for heartbeat interval. */
4533                 if (ha->firmware_options & FWOPT_HEARTBEAT_ENABLE &&
4534                     ha->heartbeat_interval != 0) {
4535                         ha->seconds_since_last_heartbeat++;
4536                         if (ha->seconds_since_last_heartbeat >
4537                             ha->heartbeat_interval + 2)
4538                                 set_bit(DPC_RESET_HA, &ha->dpc_flags);
4539                 }
4540         }
4541
4542         /* Process any deferred work. */
4543         if (!list_empty(&ha->work_list))
4544                 start_dpc++;
4545
4546         /* Wakeup the dpc routine for this adapter, if needed. */
4547         if (start_dpc ||
4548              test_bit(DPC_RESET_HA, &ha->dpc_flags) ||
4549              test_bit(DPC_RETRY_RESET_HA, &ha->dpc_flags) ||
4550              test_bit(DPC_RELOGIN_DEVICE, &ha->dpc_flags) ||
4551              test_bit(DPC_RESET_HA_FW_CONTEXT, &ha->dpc_flags) ||
4552              test_bit(DPC_RESET_HA_INTR, &ha->dpc_flags) ||
4553              test_bit(DPC_GET_DHCP_IP_ADDR, &ha->dpc_flags) ||
4554              test_bit(DPC_LINK_CHANGED, &ha->dpc_flags) ||
4555              test_bit(DPC_HA_UNRECOVERABLE, &ha->dpc_flags) ||
4556              test_bit(DPC_HA_NEED_QUIESCENT, &ha->dpc_flags) ||
4557              test_bit(DPC_SYSFS_DDB_EXPORT, &ha->dpc_flags) ||
4558              test_bit(DPC_AEN, &ha->dpc_flags)) {
4559                 DEBUG2(printk("scsi%ld: %s: scheduling dpc routine"
4560                               " - dpc flags = 0x%lx\n",
4561                               ha->host_no, __func__, ha->dpc_flags));
4562                 qla4xxx_wake_dpc(ha);
4563         }
4564
4565         /* Reschedule timer thread to call us back in one second */
4566         mod_timer(&ha->timer, jiffies + HZ);
4567
4568         DEBUG2(ha->seconds_since_last_intr++);
4569 }
4570
4571 /**
4572  * qla4xxx_cmd_wait - waits for all outstanding commands to complete
4573  * @ha: Pointer to host adapter structure.
4574  *
4575  * This routine stalls the driver until all outstanding commands are returned.
4576  * Caller must release the Hardware Lock prior to calling this routine.
4577  **/
4578 static int qla4xxx_cmd_wait(struct scsi_qla_host *ha)
4579 {
4580         uint32_t index = 0;
4581         unsigned long flags;
4582         struct scsi_cmnd *cmd;
4583         unsigned long wtime;
4584         uint32_t wtmo;
4585
4586         if (is_qla40XX(ha))
4587                 wtmo = WAIT_CMD_TOV;
4588         else
4589                 wtmo = ha->nx_reset_timeout / 2;
4590
4591         wtime = jiffies + (wtmo * HZ);
4592
4593         DEBUG2(ql4_printk(KERN_INFO, ha,
4594                           "Wait up to %u seconds for cmds to complete\n",
4595                           wtmo));
4596
4597         while (!time_after_eq(jiffies, wtime)) {
4598                 spin_lock_irqsave(&ha->hardware_lock, flags);
4599                 /* Find a command that hasn't completed. */
4600                 for (index = 0; index < ha->host->can_queue; index++) {
4601                         cmd = scsi_host_find_tag(ha->host, index);
4602                         /*
4603                          * We cannot just check if the index is valid,
4604                          * becase if we are run from the scsi eh, then
4605                          * the scsi/block layer is going to prevent
4606                          * the tag from being released.
4607                          */
4608                         if (cmd != NULL && CMD_SP(cmd))
4609                                 break;
4610                 }
4611                 spin_unlock_irqrestore(&ha->hardware_lock, flags);
4612
4613                 /* If No Commands are pending, wait is complete */
4614                 if (index == ha->host->can_queue)
4615                         return QLA_SUCCESS;
4616
4617                 msleep(1000);
4618         }
4619         /* If we timed out on waiting for commands to come back
4620          * return ERROR. */
4621         return QLA_ERROR;
4622 }
4623
4624 int qla4xxx_hw_reset(struct scsi_qla_host *ha)
4625 {
4626         uint32_t ctrl_status;
4627         unsigned long flags = 0;
4628
4629         DEBUG2(printk(KERN_ERR "scsi%ld: %s\n", ha->host_no, __func__));
4630
4631         if (ql4xxx_lock_drvr_wait(ha) != QLA_SUCCESS)
4632                 return QLA_ERROR;
4633
4634         spin_lock_irqsave(&ha->hardware_lock, flags);
4635
4636         /*
4637          * If the SCSI Reset Interrupt bit is set, clear it.
4638          * Otherwise, the Soft Reset won't work.
4639          */
4640         ctrl_status = readw(&ha->reg->ctrl_status);
4641         if ((ctrl_status & CSR_SCSI_RESET_INTR) != 0)
4642                 writel(set_rmask(CSR_SCSI_RESET_INTR), &ha->reg->ctrl_status);
4643
4644         /* Issue Soft Reset */
4645         writel(set_rmask(CSR_SOFT_RESET), &ha->reg->ctrl_status);
4646         readl(&ha->reg->ctrl_status);
4647
4648         spin_unlock_irqrestore(&ha->hardware_lock, flags);
4649         return QLA_SUCCESS;
4650 }
4651
4652 /**
4653  * qla4xxx_soft_reset - performs soft reset.
4654  * @ha: Pointer to host adapter structure.
4655  **/
4656 int qla4xxx_soft_reset(struct scsi_qla_host *ha)
4657 {
4658         uint32_t max_wait_time;
4659         unsigned long flags = 0;
4660         int status;
4661         uint32_t ctrl_status;
4662
4663         status = qla4xxx_hw_reset(ha);
4664         if (status != QLA_SUCCESS)
4665                 return status;
4666
4667         status = QLA_ERROR;
4668         /* Wait until the Network Reset Intr bit is cleared */
4669         max_wait_time = RESET_INTR_TOV;
4670         do {
4671                 spin_lock_irqsave(&ha->hardware_lock, flags);
4672                 ctrl_status = readw(&ha->reg->ctrl_status);
4673                 spin_unlock_irqrestore(&ha->hardware_lock, flags);
4674
4675                 if ((ctrl_status & CSR_NET_RESET_INTR) == 0)
4676                         break;
4677
4678                 msleep(1000);
4679         } while ((--max_wait_time));
4680
4681         if ((ctrl_status & CSR_NET_RESET_INTR) != 0) {
4682                 DEBUG2(printk(KERN_WARNING
4683                               "scsi%ld: Network Reset Intr not cleared by "
4684                               "Network function, clearing it now!\n",
4685                               ha->host_no));
4686                 spin_lock_irqsave(&ha->hardware_lock, flags);
4687                 writel(set_rmask(CSR_NET_RESET_INTR), &ha->reg->ctrl_status);
4688                 readl(&ha->reg->ctrl_status);
4689                 spin_unlock_irqrestore(&ha->hardware_lock, flags);
4690         }
4691
4692         /* Wait until the firmware tells us the Soft Reset is done */
4693         max_wait_time = SOFT_RESET_TOV;
4694         do {
4695                 spin_lock_irqsave(&ha->hardware_lock, flags);
4696                 ctrl_status = readw(&ha->reg->ctrl_status);
4697                 spin_unlock_irqrestore(&ha->hardware_lock, flags);
4698
4699                 if ((ctrl_status & CSR_SOFT_RESET) == 0) {
4700                         status = QLA_SUCCESS;
4701                         break;
4702                 }
4703
4704                 msleep(1000);
4705         } while ((--max_wait_time));
4706
4707         /*
4708          * Also, make sure that the SCSI Reset Interrupt bit has been cleared
4709          * after the soft reset has taken place.
4710          */
4711         spin_lock_irqsave(&ha->hardware_lock, flags);
4712         ctrl_status = readw(&ha->reg->ctrl_status);
4713         if ((ctrl_status & CSR_SCSI_RESET_INTR) != 0) {
4714                 writel(set_rmask(CSR_SCSI_RESET_INTR), &ha->reg->ctrl_status);
4715                 readl(&ha->reg->ctrl_status);
4716         }
4717         spin_unlock_irqrestore(&ha->hardware_lock, flags);
4718
4719         /* If soft reset fails then most probably the bios on other
4720          * function is also enabled.
4721          * Since the initialization is sequential the other fn
4722          * wont be able to acknowledge the soft reset.
4723          * Issue a force soft reset to workaround this scenario.
4724          */
4725         if (max_wait_time == 0) {
4726                 /* Issue Force Soft Reset */
4727                 spin_lock_irqsave(&ha->hardware_lock, flags);
4728                 writel(set_rmask(CSR_FORCE_SOFT_RESET), &ha->reg->ctrl_status);
4729                 readl(&ha->reg->ctrl_status);
4730                 spin_unlock_irqrestore(&ha->hardware_lock, flags);
4731                 /* Wait until the firmware tells us the Soft Reset is done */
4732                 max_wait_time = SOFT_RESET_TOV;
4733                 do {
4734                         spin_lock_irqsave(&ha->hardware_lock, flags);
4735                         ctrl_status = readw(&ha->reg->ctrl_status);
4736                         spin_unlock_irqrestore(&ha->hardware_lock, flags);
4737
4738                         if ((ctrl_status & CSR_FORCE_SOFT_RESET) == 0) {
4739                                 status = QLA_SUCCESS;
4740                                 break;
4741                         }
4742
4743                         msleep(1000);
4744                 } while ((--max_wait_time));
4745         }
4746
4747         return status;
4748 }
4749
4750 /**
4751  * qla4xxx_abort_active_cmds - returns all outstanding i/o requests to O.S.
4752  * @ha: Pointer to host adapter structure.
4753  * @res: returned scsi status
4754  *
4755  * This routine is called just prior to a HARD RESET to return all
4756  * outstanding commands back to the Operating System.
4757  * Caller should make sure that the following locks are released
4758  * before this calling routine: Hardware lock, and io_request_lock.
4759  **/
4760 static void qla4xxx_abort_active_cmds(struct scsi_qla_host *ha, int res)
4761 {
4762         struct srb *srb;
4763         int i;
4764         unsigned long flags;
4765
4766         spin_lock_irqsave(&ha->hardware_lock, flags);
4767         for (i = 0; i < ha->host->can_queue; i++) {
4768                 srb = qla4xxx_del_from_active_array(ha, i);
4769                 if (srb != NULL) {
4770                         srb->cmd->result = res;
4771                         kref_put(&srb->srb_ref, qla4xxx_srb_compl);
4772                 }
4773         }
4774         spin_unlock_irqrestore(&ha->hardware_lock, flags);
4775 }
4776
4777 void qla4xxx_dead_adapter_cleanup(struct scsi_qla_host *ha)
4778 {
4779         clear_bit(AF_ONLINE, &ha->flags);
4780
4781         /* Disable the board */
4782         ql4_printk(KERN_INFO, ha, "Disabling the board\n");
4783
4784         qla4xxx_abort_active_cmds(ha, DID_NO_CONNECT << 16);
4785         qla4xxx_mark_all_devices_missing(ha);
4786         clear_bit(AF_INIT_DONE, &ha->flags);
4787 }
4788
4789 static void qla4xxx_fail_session(struct iscsi_cls_session *cls_session)
4790 {
4791         struct iscsi_session *sess;
4792         struct ddb_entry *ddb_entry;
4793
4794         sess = cls_session->dd_data;
4795         ddb_entry = sess->dd_data;
4796         ddb_entry->fw_ddb_device_state = DDB_DS_SESSION_FAILED;
4797
4798         if (ddb_entry->ddb_type == FLASH_DDB)
4799                 iscsi_block_session(ddb_entry->sess);
4800         else
4801                 iscsi_session_failure(cls_session->dd_data,
4802                                       ISCSI_ERR_CONN_FAILED);
4803 }
4804
4805 /**
4806  * qla4xxx_recover_adapter - recovers adapter after a fatal error
4807  * @ha: Pointer to host adapter structure.
4808  **/
4809 static int qla4xxx_recover_adapter(struct scsi_qla_host *ha)
4810 {
4811         int status = QLA_ERROR;
4812         uint8_t reset_chip = 0;
4813         uint32_t dev_state;
4814         unsigned long wait;
4815
4816         /* Stall incoming I/O until we are done */
4817         scsi_block_requests(ha->host);
4818         clear_bit(AF_ONLINE, &ha->flags);
4819         clear_bit(AF_LINK_UP, &ha->flags);
4820
4821         DEBUG2(ql4_printk(KERN_INFO, ha, "%s: adapter OFFLINE\n", __func__));
4822
4823         set_bit(DPC_RESET_ACTIVE, &ha->dpc_flags);
4824
4825         if ((is_qla8032(ha) || is_qla8042(ha)) &&
4826             !test_bit(DPC_RESET_HA_FW_CONTEXT, &ha->dpc_flags)) {
4827                 ql4_printk(KERN_INFO, ha, "%s: disabling pause transmit on port 0 & 1.\n",
4828                            __func__);
4829                 /* disable pause frame for ISP83xx */
4830                 qla4_83xx_disable_pause(ha);
4831         }
4832
4833         iscsi_host_for_each_session(ha->host, qla4xxx_fail_session);
4834
4835         if (test_bit(DPC_RESET_HA, &ha->dpc_flags))
4836                 reset_chip = 1;
4837
4838         /* For the DPC_RESET_HA_INTR case (ISP-4xxx specific)
4839          * do not reset adapter, jump to initialize_adapter */
4840         if (test_bit(DPC_RESET_HA_INTR, &ha->dpc_flags)) {
4841                 status = QLA_SUCCESS;
4842                 goto recover_ha_init_adapter;
4843         }
4844
4845         /* For the ISP-8xxx adapter, issue a stop_firmware if invoked
4846          * from eh_host_reset or ioctl module */
4847         if (is_qla80XX(ha) && !reset_chip &&
4848             test_bit(DPC_RESET_HA_FW_CONTEXT, &ha->dpc_flags)) {
4849
4850                 DEBUG2(ql4_printk(KERN_INFO, ha,
4851                     "scsi%ld: %s - Performing stop_firmware...\n",
4852                     ha->host_no, __func__));
4853                 status = ha->isp_ops->reset_firmware(ha);
4854                 if (status == QLA_SUCCESS) {
4855                         ha->isp_ops->disable_intrs(ha);
4856                         qla4xxx_process_aen(ha, FLUSH_DDB_CHANGED_AENS);
4857                         qla4xxx_abort_active_cmds(ha, DID_RESET << 16);
4858                 } else {
4859                         /* If the stop_firmware fails then
4860                          * reset the entire chip */
4861                         reset_chip = 1;
4862                         clear_bit(DPC_RESET_HA_FW_CONTEXT, &ha->dpc_flags);
4863                         set_bit(DPC_RESET_HA, &ha->dpc_flags);
4864                 }
4865         }
4866
4867         /* Issue full chip reset if recovering from a catastrophic error,
4868          * or if stop_firmware fails for ISP-8xxx.
4869          * This is the default case for ISP-4xxx */
4870         if (is_qla40XX(ha) || reset_chip) {
4871                 if (is_qla40XX(ha))
4872                         goto chip_reset;
4873
4874                 /* Check if 8XXX firmware is alive or not
4875                  * We may have arrived here from NEED_RESET
4876                  * detection only */
4877                 if (test_bit(AF_FW_RECOVERY, &ha->flags))
4878                         goto chip_reset;
4879
4880                 wait = jiffies + (FW_ALIVE_WAIT_TOV * HZ);
4881                 while (time_before(jiffies, wait)) {
4882                         if (qla4_8xxx_check_fw_alive(ha)) {
4883                                 qla4xxx_mailbox_premature_completion(ha);
4884                                 break;
4885                         }
4886
4887                         set_current_state(TASK_UNINTERRUPTIBLE);
4888                         schedule_timeout(HZ);
4889                 }
4890 chip_reset:
4891                 if (!test_bit(AF_FW_RECOVERY, &ha->flags))
4892                         qla4xxx_cmd_wait(ha);
4893
4894                 qla4xxx_process_aen(ha, FLUSH_DDB_CHANGED_AENS);
4895                 DEBUG2(ql4_printk(KERN_INFO, ha,
4896                     "scsi%ld: %s - Performing chip reset..\n",
4897                     ha->host_no, __func__));
4898                 status = ha->isp_ops->reset_chip(ha);
4899                 qla4xxx_abort_active_cmds(ha, DID_RESET << 16);
4900         }
4901
4902         /* Flush any pending ddb changed AENs */
4903         qla4xxx_process_aen(ha, FLUSH_DDB_CHANGED_AENS);
4904
4905 recover_ha_init_adapter:
4906         /* Upon successful firmware/chip reset, re-initialize the adapter */
4907         if (status == QLA_SUCCESS) {
4908                 /* For ISP-4xxx, force function 1 to always initialize
4909                  * before function 3 to prevent both funcions from
4910                  * stepping on top of the other */
4911                 if (is_qla40XX(ha) && (ha->mac_index == 3))
4912                         ssleep(6);
4913
4914                 /* NOTE: AF_ONLINE flag set upon successful completion of
4915                  * qla4xxx_initialize_adapter */
4916                 status = qla4xxx_initialize_adapter(ha, RESET_ADAPTER);
4917                 if (is_qla80XX(ha) && (status == QLA_ERROR)) {
4918                         status = qla4_8xxx_check_init_adapter_retry(ha);
4919                         if (status == QLA_ERROR) {
4920                                 ql4_printk(KERN_INFO, ha, "scsi%ld: %s: Don't retry recover adapter\n",
4921                                            ha->host_no, __func__);
4922                                 qla4xxx_dead_adapter_cleanup(ha);
4923                                 clear_bit(DPC_RETRY_RESET_HA, &ha->dpc_flags);
4924                                 clear_bit(DPC_RESET_HA, &ha->dpc_flags);
4925                                 clear_bit(DPC_RESET_HA_FW_CONTEXT,
4926                                           &ha->dpc_flags);
4927                                 goto exit_recover;
4928                         }
4929                 }
4930         }
4931
4932         /* Retry failed adapter initialization, if necessary
4933          * Do not retry initialize_adapter for RESET_HA_INTR (ISP-4xxx specific)
4934          * case to prevent ping-pong resets between functions */
4935         if (!test_bit(AF_ONLINE, &ha->flags) &&
4936             !test_bit(DPC_RESET_HA_INTR, &ha->dpc_flags)) {
4937                 /* Adapter initialization failed, see if we can retry
4938                  * resetting the ha.
4939                  * Since we don't want to block the DPC for too long
4940                  * with multiple resets in the same thread,
4941                  * utilize DPC to retry */
4942                 if (is_qla80XX(ha)) {
4943                         ha->isp_ops->idc_lock(ha);
4944                         dev_state = qla4_8xxx_rd_direct(ha,
4945                                                         QLA8XXX_CRB_DEV_STATE);
4946                         ha->isp_ops->idc_unlock(ha);
4947                         if (dev_state == QLA8XXX_DEV_FAILED) {
4948                                 ql4_printk(KERN_INFO, ha, "%s: don't retry "
4949                                            "recover adapter. H/W is in Failed "
4950                                            "state\n", __func__);
4951                                 qla4xxx_dead_adapter_cleanup(ha);
4952                                 clear_bit(DPC_RETRY_RESET_HA, &ha->dpc_flags);
4953                                 clear_bit(DPC_RESET_HA, &ha->dpc_flags);
4954                                 clear_bit(DPC_RESET_HA_FW_CONTEXT,
4955                                                 &ha->dpc_flags);
4956                                 status = QLA_ERROR;
4957
4958                                 goto exit_recover;
4959                         }
4960                 }
4961
4962                 if (!test_bit(DPC_RETRY_RESET_HA, &ha->dpc_flags)) {
4963                         ha->retry_reset_ha_cnt = MAX_RESET_HA_RETRIES;
4964                         DEBUG2(printk("scsi%ld: recover adapter - retrying "
4965                                       "(%d) more times\n", ha->host_no,
4966                                       ha->retry_reset_ha_cnt));
4967                         set_bit(DPC_RETRY_RESET_HA, &ha->dpc_flags);
4968                         status = QLA_ERROR;
4969                 } else {
4970                         if (ha->retry_reset_ha_cnt > 0) {
4971                                 /* Schedule another Reset HA--DPC will retry */
4972                                 ha->retry_reset_ha_cnt--;
4973                                 DEBUG2(printk("scsi%ld: recover adapter - "
4974                                               "retry remaining %d\n",
4975                                               ha->host_no,
4976                                               ha->retry_reset_ha_cnt));
4977                                 status = QLA_ERROR;
4978                         }
4979
4980                         if (ha->retry_reset_ha_cnt == 0) {
4981                                 /* Recover adapter retries have been exhausted.
4982                                  * Adapter DEAD */
4983                                 DEBUG2(printk("scsi%ld: recover adapter "
4984                                               "failed - board disabled\n",
4985                                               ha->host_no));
4986                                 qla4xxx_dead_adapter_cleanup(ha);
4987                                 clear_bit(DPC_RETRY_RESET_HA, &ha->dpc_flags);
4988                                 clear_bit(DPC_RESET_HA, &ha->dpc_flags);
4989                                 clear_bit(DPC_RESET_HA_FW_CONTEXT,
4990                                           &ha->dpc_flags);
4991                                 status = QLA_ERROR;
4992                         }
4993                 }
4994         } else {
4995                 clear_bit(DPC_RESET_HA, &ha->dpc_flags);
4996                 clear_bit(DPC_RESET_HA_FW_CONTEXT, &ha->dpc_flags);
4997                 clear_bit(DPC_RETRY_RESET_HA, &ha->dpc_flags);
4998         }
4999
5000 exit_recover:
5001         ha->adapter_error_count++;
5002
5003         if (test_bit(AF_ONLINE, &ha->flags))
5004                 ha->isp_ops->enable_intrs(ha);
5005
5006         scsi_unblock_requests(ha->host);
5007
5008         clear_bit(DPC_RESET_ACTIVE, &ha->dpc_flags);
5009         DEBUG2(printk("scsi%ld: recover adapter: %s\n", ha->host_no,
5010             status == QLA_ERROR ? "FAILED" : "SUCCEEDED"));
5011
5012         return status;
5013 }
5014
5015 static void qla4xxx_relogin_devices(struct iscsi_cls_session *cls_session)
5016 {
5017         struct iscsi_session *sess;
5018         struct ddb_entry *ddb_entry;
5019         struct scsi_qla_host *ha;
5020
5021         sess = cls_session->dd_data;
5022         ddb_entry = sess->dd_data;
5023         ha = ddb_entry->ha;
5024         if (!iscsi_is_session_online(cls_session)) {
5025                 if (ddb_entry->fw_ddb_device_state == DDB_DS_SESSION_ACTIVE) {
5026                         ql4_printk(KERN_INFO, ha, "scsi%ld: %s: ddb[%d]"
5027                                    " unblock session\n", ha->host_no, __func__,
5028                                    ddb_entry->fw_ddb_index);
5029                         iscsi_unblock_session(ddb_entry->sess);
5030                 } else {
5031                         /* Trigger relogin */
5032                         if (ddb_entry->ddb_type == FLASH_DDB) {
5033                                 if (!(test_bit(DF_RELOGIN, &ddb_entry->flags) ||
5034                                       test_bit(DF_DISABLE_RELOGIN,
5035                                                &ddb_entry->flags)))
5036                                         qla4xxx_arm_relogin_timer(ddb_entry);
5037                         } else
5038                                 iscsi_session_failure(cls_session->dd_data,
5039                                                       ISCSI_ERR_CONN_FAILED);
5040                 }
5041         }
5042 }
5043
5044 int qla4xxx_unblock_flash_ddb(struct iscsi_cls_session *cls_session)
5045 {
5046         struct iscsi_session *sess;
5047         struct ddb_entry *ddb_entry;
5048         struct scsi_qla_host *ha;
5049
5050         sess = cls_session->dd_data;
5051         ddb_entry = sess->dd_data;
5052         ha = ddb_entry->ha;
5053         ql4_printk(KERN_INFO, ha, "scsi%ld: %s: ddb[%d]"
5054                    " unblock session\n", ha->host_no, __func__,
5055                    ddb_entry->fw_ddb_index);
5056
5057         iscsi_unblock_session(ddb_entry->sess);
5058
5059         /* Start scan target */
5060         if (test_bit(AF_ONLINE, &ha->flags)) {
5061                 ql4_printk(KERN_INFO, ha, "scsi%ld: %s: ddb[%d]"
5062                            " start scan\n", ha->host_no, __func__,
5063                            ddb_entry->fw_ddb_index);
5064                 scsi_queue_work(ha->host, &ddb_entry->sess->scan_work);
5065         }
5066         return QLA_SUCCESS;
5067 }
5068
5069 int qla4xxx_unblock_ddb(struct iscsi_cls_session *cls_session)
5070 {
5071         struct iscsi_session *sess;
5072         struct ddb_entry *ddb_entry;
5073         struct scsi_qla_host *ha;
5074         int status = QLA_SUCCESS;
5075
5076         sess = cls_session->dd_data;
5077         ddb_entry = sess->dd_data;
5078         ha = ddb_entry->ha;
5079         ql4_printk(KERN_INFO, ha, "scsi%ld: %s: ddb[%d]"
5080                    " unblock user space session\n", ha->host_no, __func__,
5081                    ddb_entry->fw_ddb_index);
5082
5083         if (!iscsi_is_session_online(cls_session)) {
5084                 iscsi_conn_start(ddb_entry->conn);
5085                 iscsi_conn_login_event(ddb_entry->conn,
5086                                        ISCSI_CONN_STATE_LOGGED_IN);
5087         } else {
5088                 ql4_printk(KERN_INFO, ha,
5089                            "scsi%ld: %s: ddb[%d] session [%d] already logged in\n",
5090                            ha->host_no, __func__, ddb_entry->fw_ddb_index,
5091                            cls_session->sid);
5092                 status = QLA_ERROR;
5093         }
5094
5095         return status;
5096 }
5097
5098 static void qla4xxx_relogin_all_devices(struct scsi_qla_host *ha)
5099 {
5100         iscsi_host_for_each_session(ha->host, qla4xxx_relogin_devices);
5101 }
5102
5103 static void qla4xxx_relogin_flash_ddb(struct iscsi_cls_session *cls_sess)
5104 {
5105         uint16_t relogin_timer;
5106         struct iscsi_session *sess;
5107         struct ddb_entry *ddb_entry;
5108         struct scsi_qla_host *ha;
5109
5110         sess = cls_sess->dd_data;
5111         ddb_entry = sess->dd_data;
5112         ha = ddb_entry->ha;
5113
5114         relogin_timer = max(ddb_entry->default_relogin_timeout,
5115                             (uint16_t)RELOGIN_TOV);
5116         atomic_set(&ddb_entry->relogin_timer, relogin_timer);
5117
5118         DEBUG2(ql4_printk(KERN_INFO, ha,
5119                           "scsi%ld: Relogin index [%d]. TOV=%d\n", ha->host_no,
5120                           ddb_entry->fw_ddb_index, relogin_timer));
5121
5122         qla4xxx_login_flash_ddb(cls_sess);
5123 }
5124
5125 static void qla4xxx_dpc_relogin(struct iscsi_cls_session *cls_sess)
5126 {
5127         struct iscsi_session *sess;
5128         struct ddb_entry *ddb_entry;
5129         struct scsi_qla_host *ha;
5130
5131         sess = cls_sess->dd_data;
5132         ddb_entry = sess->dd_data;
5133         ha = ddb_entry->ha;
5134
5135         if (!(ddb_entry->ddb_type == FLASH_DDB))
5136                 return;
5137
5138         if (test_bit(DF_DISABLE_RELOGIN, &ddb_entry->flags))
5139                 return;
5140
5141         if (test_and_clear_bit(DF_RELOGIN, &ddb_entry->flags) &&
5142             !iscsi_is_session_online(cls_sess)) {
5143                 DEBUG2(ql4_printk(KERN_INFO, ha,
5144                                   "relogin issued\n"));
5145                 qla4xxx_relogin_flash_ddb(cls_sess);
5146         }
5147 }
5148
5149 void qla4xxx_wake_dpc(struct scsi_qla_host *ha)
5150 {
5151         if (ha->dpc_thread)
5152                 queue_work(ha->dpc_thread, &ha->dpc_work);
5153 }
5154
5155 static struct qla4_work_evt *
5156 qla4xxx_alloc_work(struct scsi_qla_host *ha, uint32_t data_size,
5157                    enum qla4_work_type type)
5158 {
5159         struct qla4_work_evt *e;
5160         uint32_t size = sizeof(struct qla4_work_evt) + data_size;
5161
5162         e = kzalloc(size, GFP_ATOMIC);
5163         if (!e)
5164                 return NULL;
5165
5166         INIT_LIST_HEAD(&e->list);
5167         e->type = type;
5168         return e;
5169 }
5170
5171 static void qla4xxx_post_work(struct scsi_qla_host *ha,
5172                              struct qla4_work_evt *e)
5173 {
5174         unsigned long flags;
5175
5176         spin_lock_irqsave(&ha->work_lock, flags);
5177         list_add_tail(&e->list, &ha->work_list);
5178         spin_unlock_irqrestore(&ha->work_lock, flags);
5179         qla4xxx_wake_dpc(ha);
5180 }
5181
5182 int qla4xxx_post_aen_work(struct scsi_qla_host *ha,
5183                           enum iscsi_host_event_code aen_code,
5184                           uint32_t data_size, uint8_t *data)
5185 {
5186         struct qla4_work_evt *e;
5187
5188         e = qla4xxx_alloc_work(ha, data_size, QLA4_EVENT_AEN);
5189         if (!e)
5190                 return QLA_ERROR;
5191
5192         e->u.aen.code = aen_code;
5193         e->u.aen.data_size = data_size;
5194         memcpy(e->u.aen.data, data, data_size);
5195
5196         qla4xxx_post_work(ha, e);
5197
5198         return QLA_SUCCESS;
5199 }
5200
5201 int qla4xxx_post_ping_evt_work(struct scsi_qla_host *ha,
5202                                uint32_t status, uint32_t pid,
5203                                uint32_t data_size, uint8_t *data)
5204 {
5205         struct qla4_work_evt *e;
5206
5207         e = qla4xxx_alloc_work(ha, data_size, QLA4_EVENT_PING_STATUS);
5208         if (!e)
5209                 return QLA_ERROR;
5210
5211         e->u.ping.status = status;
5212         e->u.ping.pid = pid;
5213         e->u.ping.data_size = data_size;
5214         memcpy(e->u.ping.data, data, data_size);
5215
5216         qla4xxx_post_work(ha, e);
5217
5218         return QLA_SUCCESS;
5219 }
5220
5221 static void qla4xxx_do_work(struct scsi_qla_host *ha)
5222 {
5223         struct qla4_work_evt *e, *tmp;
5224         unsigned long flags;
5225         LIST_HEAD(work);
5226
5227         spin_lock_irqsave(&ha->work_lock, flags);
5228         list_splice_init(&ha->work_list, &work);
5229         spin_unlock_irqrestore(&ha->work_lock, flags);
5230
5231         list_for_each_entry_safe(e, tmp, &work, list) {
5232                 list_del_init(&e->list);
5233
5234                 switch (e->type) {
5235                 case QLA4_EVENT_AEN:
5236                         iscsi_post_host_event(ha->host_no,
5237                                               &qla4xxx_iscsi_transport,
5238                                               e->u.aen.code,
5239                                               e->u.aen.data_size,
5240                                               e->u.aen.data);
5241                         break;
5242                 case QLA4_EVENT_PING_STATUS:
5243                         iscsi_ping_comp_event(ha->host_no,
5244                                               &qla4xxx_iscsi_transport,
5245                                               e->u.ping.status,
5246                                               e->u.ping.pid,
5247                                               e->u.ping.data_size,
5248                                               e->u.ping.data);
5249                         break;
5250                 default:
5251                         ql4_printk(KERN_WARNING, ha, "event type: 0x%x not "
5252                                    "supported", e->type);
5253                 }
5254                 kfree(e);
5255         }
5256 }
5257
5258 /**
5259  * qla4xxx_do_dpc - dpc routine
5260  * @data: in our case pointer to adapter structure
5261  *
5262  * This routine is a task that is schedule by the interrupt handler
5263  * to perform the background processing for interrupts.  We put it
5264  * on a task queue that is consumed whenever the scheduler runs; that's
5265  * so you can do anything (i.e. put the process to sleep etc).  In fact,
5266  * the mid-level tries to sleep when it reaches the driver threshold
5267  * "host->can_queue". This can cause a panic if we were in our interrupt code.
5268  **/
5269 static void qla4xxx_do_dpc(struct work_struct *work)
5270 {
5271         struct scsi_qla_host *ha =
5272                 container_of(work, struct scsi_qla_host, dpc_work);
5273         int status = QLA_ERROR;
5274
5275         DEBUG2(ql4_printk(KERN_INFO, ha,
5276                           "scsi%ld: %s: DPC handler waking up. flags = 0x%08lx, dpc_flags = 0x%08lx\n",
5277                           ha->host_no, __func__, ha->flags, ha->dpc_flags));
5278
5279         /* Initialization not yet finished. Don't do anything yet. */
5280         if (!test_bit(AF_INIT_DONE, &ha->flags))
5281                 return;
5282
5283         if (test_bit(AF_EEH_BUSY, &ha->flags)) {
5284                 DEBUG2(printk(KERN_INFO "scsi%ld: %s: flags = %lx\n",
5285                     ha->host_no, __func__, ha->flags));
5286                 return;
5287         }
5288
5289         /* post events to application */
5290         qla4xxx_do_work(ha);
5291
5292         if (is_qla80XX(ha)) {
5293                 if (test_bit(DPC_HA_UNRECOVERABLE, &ha->dpc_flags)) {
5294                         if (is_qla8032(ha) || is_qla8042(ha)) {
5295                                 ql4_printk(KERN_INFO, ha, "%s: disabling pause transmit on port 0 & 1.\n",
5296                                            __func__);
5297                                 /* disable pause frame for ISP83xx */
5298                                 qla4_83xx_disable_pause(ha);
5299                         }
5300
5301                         ha->isp_ops->idc_lock(ha);
5302                         qla4_8xxx_wr_direct(ha, QLA8XXX_CRB_DEV_STATE,
5303                                             QLA8XXX_DEV_FAILED);
5304                         ha->isp_ops->idc_unlock(ha);
5305                         ql4_printk(KERN_INFO, ha, "HW State: FAILED\n");
5306                         qla4_8xxx_device_state_handler(ha);
5307                 }
5308
5309                 if (test_bit(DPC_POST_IDC_ACK, &ha->dpc_flags)) {
5310                         if (is_qla8042(ha)) {
5311                                 if (ha->idc_info.info2 &
5312                                     ENABLE_INTERNAL_LOOPBACK) {
5313                                         ql4_printk(KERN_INFO, ha, "%s: Disabling ACB\n",
5314                                                    __func__);
5315                                         status = qla4_84xx_config_acb(ha,
5316                                                             ACB_CONFIG_DISABLE);
5317                                         if (status != QLA_SUCCESS) {
5318                                                 ql4_printk(KERN_INFO, ha, "%s: ACB config failed\n",
5319                                                            __func__);
5320                                         }
5321                                 }
5322                         }
5323                         qla4_83xx_post_idc_ack(ha);
5324                         clear_bit(DPC_POST_IDC_ACK, &ha->dpc_flags);
5325                 }
5326
5327                 if (is_qla8042(ha) &&
5328                     test_bit(DPC_RESTORE_ACB, &ha->dpc_flags)) {
5329                         ql4_printk(KERN_INFO, ha, "%s: Restoring ACB\n",
5330                                    __func__);
5331                         if (qla4_84xx_config_acb(ha, ACB_CONFIG_SET) !=
5332                             QLA_SUCCESS) {
5333                                 ql4_printk(KERN_INFO, ha, "%s: ACB config failed ",
5334                                            __func__);
5335                         }
5336                         clear_bit(DPC_RESTORE_ACB, &ha->dpc_flags);
5337                 }
5338
5339                 if (test_and_clear_bit(DPC_HA_NEED_QUIESCENT, &ha->dpc_flags)) {
5340                         qla4_8xxx_need_qsnt_handler(ha);
5341                 }
5342         }
5343
5344         if (!test_bit(DPC_RESET_ACTIVE, &ha->dpc_flags) &&
5345             (test_bit(DPC_RESET_HA, &ha->dpc_flags) ||
5346             test_bit(DPC_RESET_HA_INTR, &ha->dpc_flags) ||
5347             test_bit(DPC_RESET_HA_FW_CONTEXT, &ha->dpc_flags))) {
5348                 if ((is_qla8022(ha) && ql4xdontresethba) ||
5349                     ((is_qla8032(ha) || is_qla8042(ha)) &&
5350                      qla4_83xx_idc_dontreset(ha))) {
5351                         DEBUG2(printk("scsi%ld: %s: Don't Reset HBA\n",
5352                             ha->host_no, __func__));
5353                         clear_bit(DPC_RESET_HA, &ha->dpc_flags);
5354                         clear_bit(DPC_RESET_HA_INTR, &ha->dpc_flags);
5355                         clear_bit(DPC_RESET_HA_FW_CONTEXT, &ha->dpc_flags);
5356                         goto dpc_post_reset_ha;
5357                 }
5358                 if (test_bit(DPC_RESET_HA_FW_CONTEXT, &ha->dpc_flags) ||
5359                     test_bit(DPC_RESET_HA, &ha->dpc_flags))
5360                         qla4xxx_recover_adapter(ha);
5361
5362                 if (test_bit(DPC_RESET_HA_INTR, &ha->dpc_flags)) {
5363                         uint8_t wait_time = RESET_INTR_TOV;
5364
5365                         while ((readw(&ha->reg->ctrl_status) &
5366                                 (CSR_SOFT_RESET | CSR_FORCE_SOFT_RESET)) != 0) {
5367                                 if (--wait_time == 0)
5368                                         break;
5369                                 msleep(1000);
5370                         }
5371                         if (wait_time == 0)
5372                                 DEBUG2(printk("scsi%ld: %s: SR|FSR "
5373                                               "bit not cleared-- resetting\n",
5374                                               ha->host_no, __func__));
5375                         qla4xxx_abort_active_cmds(ha, DID_RESET << 16);
5376                         if (ql4xxx_lock_drvr_wait(ha) == QLA_SUCCESS) {
5377                                 qla4xxx_process_aen(ha, FLUSH_DDB_CHANGED_AENS);
5378                                 status = qla4xxx_recover_adapter(ha);
5379                         }
5380                         clear_bit(DPC_RESET_HA_INTR, &ha->dpc_flags);
5381                         if (status == QLA_SUCCESS)
5382                                 ha->isp_ops->enable_intrs(ha);
5383                 }
5384         }
5385
5386 dpc_post_reset_ha:
5387         /* ---- process AEN? --- */
5388         if (test_and_clear_bit(DPC_AEN, &ha->dpc_flags))
5389                 qla4xxx_process_aen(ha, PROCESS_ALL_AENS);
5390
5391         /* ---- Get DHCP IP Address? --- */
5392         if (test_and_clear_bit(DPC_GET_DHCP_IP_ADDR, &ha->dpc_flags))
5393                 qla4xxx_get_dhcp_ip_address(ha);
5394
5395         /* ---- relogin device? --- */
5396         if (adapter_up(ha) &&
5397             test_and_clear_bit(DPC_RELOGIN_DEVICE, &ha->dpc_flags)) {
5398                 iscsi_host_for_each_session(ha->host, qla4xxx_dpc_relogin);
5399         }
5400
5401         /* ---- link change? --- */
5402         if (!test_bit(AF_LOOPBACK, &ha->flags) &&
5403             test_and_clear_bit(DPC_LINK_CHANGED, &ha->dpc_flags)) {
5404                 if (!test_bit(AF_LINK_UP, &ha->flags)) {
5405                         /* ---- link down? --- */
5406                         qla4xxx_mark_all_devices_missing(ha);
5407                 } else {
5408                         /* ---- link up? --- *
5409                          * F/W will auto login to all devices ONLY ONCE after
5410                          * link up during driver initialization and runtime
5411                          * fatal error recovery.  Therefore, the driver must
5412                          * manually relogin to devices when recovering from
5413                          * connection failures, logouts, expired KATO, etc. */
5414                         if (test_and_clear_bit(AF_BUILD_DDB_LIST, &ha->flags)) {
5415                                 qla4xxx_build_ddb_list(ha, ha->is_reset);
5416                                 iscsi_host_for_each_session(ha->host,
5417                                                 qla4xxx_login_flash_ddb);
5418                         } else
5419                                 qla4xxx_relogin_all_devices(ha);
5420                 }
5421         }
5422         if (test_and_clear_bit(DPC_SYSFS_DDB_EXPORT, &ha->dpc_flags)) {
5423                 if (qla4xxx_sysfs_ddb_export(ha))
5424                         ql4_printk(KERN_ERR, ha, "%s: Error exporting ddb to sysfs\n",
5425                                    __func__);
5426         }
5427 }
5428
5429 /**
5430  * qla4xxx_free_adapter - release the adapter
5431  * @ha: pointer to adapter structure
5432  **/
5433 static void qla4xxx_free_adapter(struct scsi_qla_host *ha)
5434 {
5435         qla4xxx_abort_active_cmds(ha, DID_NO_CONNECT << 16);
5436
5437         /* Turn-off interrupts on the card. */
5438         ha->isp_ops->disable_intrs(ha);
5439
5440         if (is_qla40XX(ha)) {
5441                 writel(set_rmask(CSR_SCSI_PROCESSOR_INTR),
5442                        &ha->reg->ctrl_status);
5443                 readl(&ha->reg->ctrl_status);
5444         } else if (is_qla8022(ha)) {
5445                 writel(0, &ha->qla4_82xx_reg->host_int);
5446                 readl(&ha->qla4_82xx_reg->host_int);
5447         } else if (is_qla8032(ha) || is_qla8042(ha)) {
5448                 writel(0, &ha->qla4_83xx_reg->risc_intr);
5449                 readl(&ha->qla4_83xx_reg->risc_intr);
5450         }
5451
5452         /* Remove timer thread, if present */
5453         if (ha->timer_active)
5454                 qla4xxx_stop_timer(ha);
5455
5456         /* Kill the kernel thread for this host */
5457         if (ha->dpc_thread)
5458                 destroy_workqueue(ha->dpc_thread);
5459
5460         /* Kill the kernel thread for this host */
5461         if (ha->task_wq)
5462                 destroy_workqueue(ha->task_wq);
5463
5464         /* Put firmware in known state */
5465         ha->isp_ops->reset_firmware(ha);
5466
5467         if (is_qla80XX(ha)) {
5468                 ha->isp_ops->idc_lock(ha);
5469                 qla4_8xxx_clear_drv_active(ha);
5470                 ha->isp_ops->idc_unlock(ha);
5471         }
5472
5473         /* Detach interrupts */
5474         qla4xxx_free_irqs(ha);
5475
5476         /* free extra memory */
5477         qla4xxx_mem_free(ha);
5478 }
5479
5480 int qla4_8xxx_iospace_config(struct scsi_qla_host *ha)
5481 {
5482         int status = 0;
5483         unsigned long mem_base, mem_len, db_base, db_len;
5484         struct pci_dev *pdev = ha->pdev;
5485
5486         status = pci_request_regions(pdev, DRIVER_NAME);
5487         if (status) {
5488                 printk(KERN_WARNING
5489                     "scsi(%ld) Failed to reserve PIO regions (%s) "
5490                     "status=%d\n", ha->host_no, pci_name(pdev), status);
5491                 goto iospace_error_exit;
5492         }
5493
5494         DEBUG2(printk(KERN_INFO "%s: revision-id=%d\n",
5495             __func__, pdev->revision));
5496         ha->revision_id = pdev->revision;
5497
5498         /* remap phys address */
5499         mem_base = pci_resource_start(pdev, 0); /* 0 is for BAR 0 */
5500         mem_len = pci_resource_len(pdev, 0);
5501         DEBUG2(printk(KERN_INFO "%s: ioremap from %lx a size of %lx\n",
5502             __func__, mem_base, mem_len));
5503
5504         /* mapping of pcibase pointer */
5505         ha->nx_pcibase = (unsigned long)ioremap(mem_base, mem_len);
5506         if (!ha->nx_pcibase) {
5507                 printk(KERN_ERR
5508                     "cannot remap MMIO (%s), aborting\n", pci_name(pdev));
5509                 pci_release_regions(ha->pdev);
5510                 goto iospace_error_exit;
5511         }
5512
5513         /* Mapping of IO base pointer, door bell read and write pointer */
5514
5515         /* mapping of IO base pointer */
5516         if (is_qla8022(ha)) {
5517                 ha->qla4_82xx_reg = (struct device_reg_82xx  __iomem *)
5518                                     ((uint8_t *)ha->nx_pcibase + 0xbc000 +
5519                                      (ha->pdev->devfn << 11));
5520                 ha->nx_db_wr_ptr = (ha->pdev->devfn == 4 ? QLA82XX_CAM_RAM_DB1 :
5521                                     QLA82XX_CAM_RAM_DB2);
5522         } else if (is_qla8032(ha) || is_qla8042(ha)) {
5523                 ha->qla4_83xx_reg = (struct device_reg_83xx __iomem *)
5524                                     ((uint8_t *)ha->nx_pcibase);
5525         }
5526
5527         db_base = pci_resource_start(pdev, 4);  /* doorbell is on bar 4 */
5528         db_len = pci_resource_len(pdev, 4);
5529
5530         return 0;
5531 iospace_error_exit:
5532         return -ENOMEM;
5533 }
5534
5535 /***
5536  * qla4xxx_iospace_config - maps registers
5537  * @ha: pointer to adapter structure
5538  *
5539  * This routines maps HBA's registers from the pci address space
5540  * into the kernel virtual address space for memory mapped i/o.
5541  **/
5542 int qla4xxx_iospace_config(struct scsi_qla_host *ha)
5543 {
5544         unsigned long pio, pio_len, pio_flags;
5545         unsigned long mmio, mmio_len, mmio_flags;
5546
5547         pio = pci_resource_start(ha->pdev, 0);
5548         pio_len = pci_resource_len(ha->pdev, 0);
5549         pio_flags = pci_resource_flags(ha->pdev, 0);
5550         if (pio_flags & IORESOURCE_IO) {
5551                 if (pio_len < MIN_IOBASE_LEN) {
5552                         ql4_printk(KERN_WARNING, ha,
5553                                 "Invalid PCI I/O region size\n");
5554                         pio = 0;
5555                 }
5556         } else {
5557                 ql4_printk(KERN_WARNING, ha, "region #0 not a PIO resource\n");
5558                 pio = 0;
5559         }
5560
5561         /* Use MMIO operations for all accesses. */
5562         mmio = pci_resource_start(ha->pdev, 1);
5563         mmio_len = pci_resource_len(ha->pdev, 1);
5564         mmio_flags = pci_resource_flags(ha->pdev, 1);
5565
5566         if (!(mmio_flags & IORESOURCE_MEM)) {
5567                 ql4_printk(KERN_ERR, ha,
5568                     "region #0 not an MMIO resource, aborting\n");
5569
5570                 goto iospace_error_exit;
5571         }
5572
5573         if (mmio_len < MIN_IOBASE_LEN) {
5574                 ql4_printk(KERN_ERR, ha,
5575                     "Invalid PCI mem region size, aborting\n");
5576                 goto iospace_error_exit;
5577         }
5578
5579         if (pci_request_regions(ha->pdev, DRIVER_NAME)) {
5580                 ql4_printk(KERN_WARNING, ha,
5581                     "Failed to reserve PIO/MMIO regions\n");
5582
5583                 goto iospace_error_exit;
5584         }
5585
5586         ha->pio_address = pio;
5587         ha->pio_length = pio_len;
5588         ha->reg = ioremap(mmio, MIN_IOBASE_LEN);
5589         if (!ha->reg) {
5590                 ql4_printk(KERN_ERR, ha,
5591                     "cannot remap MMIO, aborting\n");
5592
5593                 goto iospace_error_exit;
5594         }
5595
5596         return 0;
5597
5598 iospace_error_exit:
5599         return -ENOMEM;
5600 }
5601
5602 static struct isp_operations qla4xxx_isp_ops = {
5603         .iospace_config         = qla4xxx_iospace_config,
5604         .pci_config             = qla4xxx_pci_config,
5605         .disable_intrs          = qla4xxx_disable_intrs,
5606         .enable_intrs           = qla4xxx_enable_intrs,
5607         .start_firmware         = qla4xxx_start_firmware,
5608         .intr_handler           = qla4xxx_intr_handler,
5609         .interrupt_service_routine = qla4xxx_interrupt_service_routine,
5610         .reset_chip             = qla4xxx_soft_reset,
5611         .reset_firmware         = qla4xxx_hw_reset,
5612         .queue_iocb             = qla4xxx_queue_iocb,
5613         .complete_iocb          = qla4xxx_complete_iocb,
5614         .rd_shdw_req_q_out      = qla4xxx_rd_shdw_req_q_out,
5615         .rd_shdw_rsp_q_in       = qla4xxx_rd_shdw_rsp_q_in,
5616         .get_sys_info           = qla4xxx_get_sys_info,
5617         .queue_mailbox_command  = qla4xxx_queue_mbox_cmd,
5618         .process_mailbox_interrupt = qla4xxx_process_mbox_intr,
5619 };
5620
5621 static struct isp_operations qla4_82xx_isp_ops = {
5622         .iospace_config         = qla4_8xxx_iospace_config,
5623         .pci_config             = qla4_8xxx_pci_config,
5624         .disable_intrs          = qla4_82xx_disable_intrs,
5625         .enable_intrs           = qla4_82xx_enable_intrs,
5626         .start_firmware         = qla4_8xxx_load_risc,
5627         .restart_firmware       = qla4_82xx_try_start_fw,
5628         .intr_handler           = qla4_82xx_intr_handler,
5629         .interrupt_service_routine = qla4_82xx_interrupt_service_routine,
5630         .need_reset             = qla4_8xxx_need_reset,
5631         .reset_chip             = qla4_82xx_isp_reset,
5632         .reset_firmware         = qla4_8xxx_stop_firmware,
5633         .queue_iocb             = qla4_82xx_queue_iocb,
5634         .complete_iocb          = qla4_82xx_complete_iocb,
5635         .rd_shdw_req_q_out      = qla4_82xx_rd_shdw_req_q_out,
5636         .rd_shdw_rsp_q_in       = qla4_82xx_rd_shdw_rsp_q_in,
5637         .get_sys_info           = qla4_8xxx_get_sys_info,
5638         .rd_reg_direct          = qla4_82xx_rd_32,
5639         .wr_reg_direct          = qla4_82xx_wr_32,
5640         .rd_reg_indirect        = qla4_82xx_md_rd_32,
5641         .wr_reg_indirect        = qla4_82xx_md_wr_32,
5642         .idc_lock               = qla4_82xx_idc_lock,
5643         .idc_unlock             = qla4_82xx_idc_unlock,
5644         .rom_lock_recovery      = qla4_82xx_rom_lock_recovery,
5645         .queue_mailbox_command  = qla4_82xx_queue_mbox_cmd,
5646         .process_mailbox_interrupt = qla4_82xx_process_mbox_intr,
5647 };
5648
5649 static struct isp_operations qla4_83xx_isp_ops = {
5650         .iospace_config         = qla4_8xxx_iospace_config,
5651         .pci_config             = qla4_8xxx_pci_config,
5652         .disable_intrs          = qla4_83xx_disable_intrs,
5653         .enable_intrs           = qla4_83xx_enable_intrs,
5654         .start_firmware         = qla4_8xxx_load_risc,
5655         .restart_firmware       = qla4_83xx_start_firmware,
5656         .intr_handler           = qla4_83xx_intr_handler,
5657         .interrupt_service_routine = qla4_83xx_interrupt_service_routine,
5658         .need_reset             = qla4_8xxx_need_reset,
5659         .reset_chip             = qla4_83xx_isp_reset,
5660         .reset_firmware         = qla4_8xxx_stop_firmware,
5661         .queue_iocb             = qla4_83xx_queue_iocb,
5662         .complete_iocb          = qla4_83xx_complete_iocb,
5663         .rd_shdw_req_q_out      = qla4xxx_rd_shdw_req_q_out,
5664         .rd_shdw_rsp_q_in       = qla4xxx_rd_shdw_rsp_q_in,
5665         .get_sys_info           = qla4_8xxx_get_sys_info,
5666         .rd_reg_direct          = qla4_83xx_rd_reg,
5667         .wr_reg_direct          = qla4_83xx_wr_reg,
5668         .rd_reg_indirect        = qla4_83xx_rd_reg_indirect,
5669         .wr_reg_indirect        = qla4_83xx_wr_reg_indirect,
5670         .idc_lock               = qla4_83xx_drv_lock,
5671         .idc_unlock             = qla4_83xx_drv_unlock,
5672         .rom_lock_recovery      = qla4_83xx_rom_lock_recovery,
5673         .queue_mailbox_command  = qla4_83xx_queue_mbox_cmd,
5674         .process_mailbox_interrupt = qla4_83xx_process_mbox_intr,
5675 };
5676
5677 uint16_t qla4xxx_rd_shdw_req_q_out(struct scsi_qla_host *ha)
5678 {
5679         return (uint16_t)le32_to_cpu(ha->shadow_regs->req_q_out);
5680 }
5681
5682 uint16_t qla4_82xx_rd_shdw_req_q_out(struct scsi_qla_host *ha)
5683 {
5684         return (uint16_t)le32_to_cpu(readl(&ha->qla4_82xx_reg->req_q_out));
5685 }
5686
5687 uint16_t qla4xxx_rd_shdw_rsp_q_in(struct scsi_qla_host *ha)
5688 {
5689         return (uint16_t)le32_to_cpu(ha->shadow_regs->rsp_q_in);
5690 }
5691
5692 uint16_t qla4_82xx_rd_shdw_rsp_q_in(struct scsi_qla_host *ha)
5693 {
5694         return (uint16_t)le32_to_cpu(readl(&ha->qla4_82xx_reg->rsp_q_in));
5695 }
5696
5697 static ssize_t qla4xxx_show_boot_eth_info(void *data, int type, char *buf)
5698 {
5699         struct scsi_qla_host *ha = data;
5700         char *str = buf;
5701         int rc;
5702
5703         switch (type) {
5704         case ISCSI_BOOT_ETH_FLAGS:
5705                 rc = sprintf(str, "%d\n", SYSFS_FLAG_FW_SEL_BOOT);
5706                 break;
5707         case ISCSI_BOOT_ETH_INDEX:
5708                 rc = sprintf(str, "0\n");
5709                 break;
5710         case ISCSI_BOOT_ETH_MAC:
5711                 rc = sysfs_format_mac(str, ha->my_mac,
5712                                       MAC_ADDR_LEN);
5713                 break;
5714         default:
5715                 rc = -ENOSYS;
5716                 break;
5717         }
5718         return rc;
5719 }
5720
5721 static umode_t qla4xxx_eth_get_attr_visibility(void *data, int type)
5722 {
5723         int rc;
5724
5725         switch (type) {
5726         case ISCSI_BOOT_ETH_FLAGS:
5727         case ISCSI_BOOT_ETH_MAC:
5728         case ISCSI_BOOT_ETH_INDEX:
5729                 rc = S_IRUGO;
5730                 break;
5731         default:
5732                 rc = 0;
5733                 break;
5734         }
5735         return rc;
5736 }
5737
5738 static ssize_t qla4xxx_show_boot_ini_info(void *data, int type, char *buf)
5739 {
5740         struct scsi_qla_host *ha = data;
5741         char *str = buf;
5742         int rc;
5743
5744         switch (type) {
5745         case ISCSI_BOOT_INI_INITIATOR_NAME:
5746                 rc = sprintf(str, "%s\n", ha->name_string);
5747                 break;
5748         default:
5749                 rc = -ENOSYS;
5750                 break;
5751         }
5752         return rc;
5753 }
5754
5755 static umode_t qla4xxx_ini_get_attr_visibility(void *data, int type)
5756 {
5757         int rc;
5758
5759         switch (type) {
5760         case ISCSI_BOOT_INI_INITIATOR_NAME:
5761                 rc = S_IRUGO;
5762                 break;
5763         default:
5764                 rc = 0;
5765                 break;
5766         }
5767         return rc;
5768 }
5769
5770 static ssize_t
5771 qla4xxx_show_boot_tgt_info(struct ql4_boot_session_info *boot_sess, int type,
5772                            char *buf)
5773 {
5774         struct ql4_conn_info *boot_conn = &boot_sess->conn_list[0];
5775         char *str = buf;
5776         int rc;
5777
5778         switch (type) {
5779         case ISCSI_BOOT_TGT_NAME:
5780                 rc = sprintf(buf, "%s\n", (char *)&boot_sess->target_name);
5781                 break;
5782         case ISCSI_BOOT_TGT_IP_ADDR:
5783                 if (boot_sess->conn_list[0].dest_ipaddr.ip_type == 0x1)
5784                         rc = sprintf(buf, "%pI4\n",
5785                                      &boot_conn->dest_ipaddr.ip_address);
5786                 else
5787                         rc = sprintf(str, "%pI6\n",
5788                                      &boot_conn->dest_ipaddr.ip_address);
5789                 break;
5790         case ISCSI_BOOT_TGT_PORT:
5791                         rc = sprintf(str, "%d\n", boot_conn->dest_port);
5792                 break;
5793         case ISCSI_BOOT_TGT_CHAP_NAME:
5794                 rc = sprintf(str,  "%.*s\n",
5795                              boot_conn->chap.target_chap_name_length,
5796                              (char *)&boot_conn->chap.target_chap_name);
5797                 break;
5798         case ISCSI_BOOT_TGT_CHAP_SECRET:
5799                 rc = sprintf(str,  "%.*s\n",
5800                              boot_conn->chap.target_secret_length,
5801                              (char *)&boot_conn->chap.target_secret);
5802                 break;
5803         case ISCSI_BOOT_TGT_REV_CHAP_NAME:
5804                 rc = sprintf(str,  "%.*s\n",
5805                              boot_conn->chap.intr_chap_name_length,
5806                              (char *)&boot_conn->chap.intr_chap_name);
5807                 break;
5808         case ISCSI_BOOT_TGT_REV_CHAP_SECRET:
5809                 rc = sprintf(str,  "%.*s\n",
5810                              boot_conn->chap.intr_secret_length,
5811                              (char *)&boot_conn->chap.intr_secret);
5812                 break;
5813         case ISCSI_BOOT_TGT_FLAGS:
5814                 rc = sprintf(str, "%d\n", SYSFS_FLAG_FW_SEL_BOOT);
5815                 break;
5816         case ISCSI_BOOT_TGT_NIC_ASSOC:
5817                 rc = sprintf(str, "0\n");
5818                 break;
5819         default:
5820                 rc = -ENOSYS;
5821                 break;
5822         }
5823         return rc;
5824 }
5825
5826 static ssize_t qla4xxx_show_boot_tgt_pri_info(void *data, int type, char *buf)
5827 {
5828         struct scsi_qla_host *ha = data;
5829         struct ql4_boot_session_info *boot_sess = &(ha->boot_tgt.boot_pri_sess);
5830
5831         return qla4xxx_show_boot_tgt_info(boot_sess, type, buf);
5832 }
5833
5834 static ssize_t qla4xxx_show_boot_tgt_sec_info(void *data, int type, char *buf)
5835 {
5836         struct scsi_qla_host *ha = data;
5837         struct ql4_boot_session_info *boot_sess = &(ha->boot_tgt.boot_sec_sess);
5838
5839         return qla4xxx_show_boot_tgt_info(boot_sess, type, buf);
5840 }
5841
5842 static umode_t qla4xxx_tgt_get_attr_visibility(void *data, int type)
5843 {
5844         int rc;
5845
5846         switch (type) {
5847         case ISCSI_BOOT_TGT_NAME:
5848         case ISCSI_BOOT_TGT_IP_ADDR:
5849         case ISCSI_BOOT_TGT_PORT:
5850         case ISCSI_BOOT_TGT_CHAP_NAME:
5851         case ISCSI_BOOT_TGT_CHAP_SECRET:
5852         case ISCSI_BOOT_TGT_REV_CHAP_NAME:
5853         case ISCSI_BOOT_TGT_REV_CHAP_SECRET:
5854         case ISCSI_BOOT_TGT_NIC_ASSOC:
5855         case ISCSI_BOOT_TGT_FLAGS:
5856                 rc = S_IRUGO;
5857                 break;
5858         default:
5859                 rc = 0;
5860                 break;
5861         }
5862         return rc;
5863 }
5864
5865 static void qla4xxx_boot_release(void *data)
5866 {
5867         struct scsi_qla_host *ha = data;
5868
5869         scsi_host_put(ha->host);
5870 }
5871
5872 static int get_fw_boot_info(struct scsi_qla_host *ha, uint16_t ddb_index[])
5873 {
5874         dma_addr_t buf_dma;
5875         uint32_t addr, pri_addr, sec_addr;
5876         uint32_t offset;
5877         uint16_t func_num;
5878         uint8_t val;
5879         uint8_t *buf = NULL;
5880         size_t size = 13 * sizeof(uint8_t);
5881         int ret = QLA_SUCCESS;
5882
5883         func_num = PCI_FUNC(ha->pdev->devfn);
5884
5885         ql4_printk(KERN_INFO, ha, "%s: Get FW boot info for 0x%x func %d\n",
5886                    __func__, ha->pdev->device, func_num);
5887
5888         if (is_qla40XX(ha)) {
5889                 if (func_num == 1) {
5890                         addr = NVRAM_PORT0_BOOT_MODE;
5891                         pri_addr = NVRAM_PORT0_BOOT_PRI_TGT;
5892                         sec_addr = NVRAM_PORT0_BOOT_SEC_TGT;
5893                 } else if (func_num == 3) {
5894                         addr = NVRAM_PORT1_BOOT_MODE;
5895                         pri_addr = NVRAM_PORT1_BOOT_PRI_TGT;
5896                         sec_addr = NVRAM_PORT1_BOOT_SEC_TGT;
5897                 } else {
5898                         ret = QLA_ERROR;
5899                         goto exit_boot_info;
5900                 }
5901
5902                 /* Check Boot Mode */
5903                 val = rd_nvram_byte(ha, addr);
5904                 if (!(val & 0x07)) {
5905                         DEBUG2(ql4_printk(KERN_INFO, ha, "%s: Adapter boot "
5906                                           "options : 0x%x\n", __func__, val));
5907                         ret = QLA_ERROR;
5908                         goto exit_boot_info;
5909                 }
5910
5911                 /* get primary valid target index */
5912                 val = rd_nvram_byte(ha, pri_addr);
5913                 if (val & BIT_7)
5914                         ddb_index[0] = (val & 0x7f);
5915
5916                 /* get secondary valid target index */
5917                 val = rd_nvram_byte(ha, sec_addr);
5918                 if (val & BIT_7)
5919                         ddb_index[1] = (val & 0x7f);
5920
5921         } else if (is_qla80XX(ha)) {
5922                 buf = dma_alloc_coherent(&ha->pdev->dev, size,
5923                                          &buf_dma, GFP_KERNEL);
5924                 if (!buf) {
5925                         DEBUG2(ql4_printk(KERN_ERR, ha,
5926                                           "%s: Unable to allocate dma buffer\n",
5927                                            __func__));
5928                         ret = QLA_ERROR;
5929                         goto exit_boot_info;
5930                 }
5931
5932                 if (ha->port_num == 0)
5933                         offset = BOOT_PARAM_OFFSET_PORT0;
5934                 else if (ha->port_num == 1)
5935                         offset = BOOT_PARAM_OFFSET_PORT1;
5936                 else {
5937                         ret = QLA_ERROR;
5938                         goto exit_boot_info_free;
5939                 }
5940                 addr = FLASH_RAW_ACCESS_ADDR + (ha->hw.flt_iscsi_param * 4) +
5941                        offset;
5942                 if (qla4xxx_get_flash(ha, buf_dma, addr,
5943                                       13 * sizeof(uint8_t)) != QLA_SUCCESS) {
5944                         DEBUG2(ql4_printk(KERN_ERR, ha, "scsi%ld: %s: Get Flash"
5945                                           " failed\n", ha->host_no, __func__));
5946                         ret = QLA_ERROR;
5947                         goto exit_boot_info_free;
5948                 }
5949                 /* Check Boot Mode */
5950                 if (!(buf[1] & 0x07)) {
5951                         DEBUG2(ql4_printk(KERN_INFO, ha, "Firmware boot options"
5952                                           " : 0x%x\n", buf[1]));
5953                         ret = QLA_ERROR;
5954                         goto exit_boot_info_free;
5955                 }
5956
5957                 /* get primary valid target index */
5958                 if (buf[2] & BIT_7)
5959                         ddb_index[0] = buf[2] & 0x7f;
5960
5961                 /* get secondary valid target index */
5962                 if (buf[11] & BIT_7)
5963                         ddb_index[1] = buf[11] & 0x7f;
5964         } else {
5965                 ret = QLA_ERROR;
5966                 goto exit_boot_info;
5967         }
5968
5969         DEBUG2(ql4_printk(KERN_INFO, ha, "%s: Primary target ID %d, Secondary"
5970                           " target ID %d\n", __func__, ddb_index[0],
5971                           ddb_index[1]));
5972
5973 exit_boot_info_free:
5974         dma_free_coherent(&ha->pdev->dev, size, buf, buf_dma);
5975 exit_boot_info:
5976         ha->pri_ddb_idx = ddb_index[0];
5977         ha->sec_ddb_idx = ddb_index[1];
5978         return ret;
5979 }
5980
5981 /**
5982  * qla4xxx_get_bidi_chap - Get a BIDI CHAP user and password
5983  * @ha: pointer to adapter structure
5984  * @username: CHAP username to be returned
5985  * @password: CHAP password to be returned
5986  *
5987  * If a boot entry has BIDI CHAP enabled then we need to set the BIDI CHAP
5988  * user and password in the sysfs entry in /sys/firmware/iscsi_boot#/.
5989  * So from the CHAP cache find the first BIDI CHAP entry and set it
5990  * to the boot record in sysfs.
5991  **/
5992 static int qla4xxx_get_bidi_chap(struct scsi_qla_host *ha, char *username,
5993                             char *password)
5994 {
5995         int i, ret = -EINVAL;
5996         int max_chap_entries = 0;
5997         struct ql4_chap_table *chap_table;
5998
5999         if (is_qla80XX(ha))
6000                 max_chap_entries = (ha->hw.flt_chap_size / 2) /
6001                                                 sizeof(struct ql4_chap_table);
6002         else
6003                 max_chap_entries = MAX_CHAP_ENTRIES_40XX;
6004
6005         if (!ha->chap_list) {
6006                 ql4_printk(KERN_ERR, ha, "Do not have CHAP table cache\n");
6007                 return ret;
6008         }
6009
6010         mutex_lock(&ha->chap_sem);
6011         for (i = 0; i < max_chap_entries; i++) {
6012                 chap_table = (struct ql4_chap_table *)ha->chap_list + i;
6013                 if (chap_table->cookie !=
6014                     __constant_cpu_to_le16(CHAP_VALID_COOKIE)) {
6015                         continue;
6016                 }
6017
6018                 if (chap_table->flags & BIT_7) /* local */
6019                         continue;
6020
6021                 if (!(chap_table->flags & BIT_6)) /* Not BIDI */
6022                         continue;
6023
6024                 strlcpy(password, chap_table->secret, QL4_CHAP_MAX_SECRET_LEN);
6025                 strlcpy(username, chap_table->name, QL4_CHAP_MAX_NAME_LEN);
6026                 ret = 0;
6027                 break;
6028         }
6029         mutex_unlock(&ha->chap_sem);
6030
6031         return ret;
6032 }
6033
6034
6035 static int qla4xxx_get_boot_target(struct scsi_qla_host *ha,
6036                                    struct ql4_boot_session_info *boot_sess,
6037                                    uint16_t ddb_index)
6038 {
6039         struct ql4_conn_info *boot_conn = &boot_sess->conn_list[0];
6040         struct dev_db_entry *fw_ddb_entry;
6041         dma_addr_t fw_ddb_entry_dma;
6042         uint16_t idx;
6043         uint16_t options;
6044         int ret = QLA_SUCCESS;
6045
6046         fw_ddb_entry = dma_alloc_coherent(&ha->pdev->dev, sizeof(*fw_ddb_entry),
6047                                           &fw_ddb_entry_dma, GFP_KERNEL);
6048         if (!fw_ddb_entry) {
6049                 DEBUG2(ql4_printk(KERN_ERR, ha,
6050                                   "%s: Unable to allocate dma buffer.\n",
6051                                   __func__));
6052                 ret = QLA_ERROR;
6053                 return ret;
6054         }
6055
6056         if (qla4xxx_bootdb_by_index(ha, fw_ddb_entry,
6057                                    fw_ddb_entry_dma, ddb_index)) {
6058                 DEBUG2(ql4_printk(KERN_INFO, ha, "%s: No Flash DDB found at "
6059                                   "index [%d]\n", __func__, ddb_index));
6060                 ret = QLA_ERROR;
6061                 goto exit_boot_target;
6062         }
6063
6064         /* Update target name and IP from DDB */
6065         memcpy(boot_sess->target_name, fw_ddb_entry->iscsi_name,
6066                min(sizeof(boot_sess->target_name),
6067                    sizeof(fw_ddb_entry->iscsi_name)));
6068
6069         options = le16_to_cpu(fw_ddb_entry->options);
6070         if (options & DDB_OPT_IPV6_DEVICE) {
6071                 memcpy(&boot_conn->dest_ipaddr.ip_address,
6072                        &fw_ddb_entry->ip_addr[0], IPv6_ADDR_LEN);
6073         } else {
6074                 boot_conn->dest_ipaddr.ip_type = 0x1;
6075                 memcpy(&boot_conn->dest_ipaddr.ip_address,
6076                        &fw_ddb_entry->ip_addr[0], IP_ADDR_LEN);
6077         }
6078
6079         boot_conn->dest_port = le16_to_cpu(fw_ddb_entry->port);
6080
6081         /* update chap information */
6082         idx = __le16_to_cpu(fw_ddb_entry->chap_tbl_idx);
6083
6084         if (BIT_7 & le16_to_cpu(fw_ddb_entry->iscsi_options))   {
6085
6086                 DEBUG2(ql4_printk(KERN_INFO, ha, "Setting chap\n"));
6087
6088                 ret = qla4xxx_get_chap(ha, (char *)&boot_conn->chap.
6089                                        target_chap_name,
6090                                        (char *)&boot_conn->chap.target_secret,
6091                                        idx);
6092                 if (ret) {
6093                         ql4_printk(KERN_ERR, ha, "Failed to set chap\n");
6094                         ret = QLA_ERROR;
6095                         goto exit_boot_target;
6096                 }
6097
6098                 boot_conn->chap.target_chap_name_length = QL4_CHAP_MAX_NAME_LEN;
6099                 boot_conn->chap.target_secret_length = QL4_CHAP_MAX_SECRET_LEN;
6100         }
6101
6102         if (BIT_4 & le16_to_cpu(fw_ddb_entry->iscsi_options)) {
6103
6104                 DEBUG2(ql4_printk(KERN_INFO, ha, "Setting BIDI chap\n"));
6105
6106                 ret = qla4xxx_get_bidi_chap(ha,
6107                                     (char *)&boot_conn->chap.intr_chap_name,
6108                                     (char *)&boot_conn->chap.intr_secret);
6109
6110                 if (ret) {
6111                         ql4_printk(KERN_ERR, ha, "Failed to set BIDI chap\n");
6112                         ret = QLA_ERROR;
6113                         goto exit_boot_target;
6114                 }
6115
6116                 boot_conn->chap.intr_chap_name_length = QL4_CHAP_MAX_NAME_LEN;
6117                 boot_conn->chap.intr_secret_length = QL4_CHAP_MAX_SECRET_LEN;
6118         }
6119
6120 exit_boot_target:
6121         dma_free_coherent(&ha->pdev->dev, sizeof(*fw_ddb_entry),
6122                           fw_ddb_entry, fw_ddb_entry_dma);
6123         return ret;
6124 }
6125
6126 static int qla4xxx_get_boot_info(struct scsi_qla_host *ha)
6127 {
6128         uint16_t ddb_index[2];
6129         int ret = QLA_ERROR;
6130         int rval;
6131
6132         memset(ddb_index, 0, sizeof(ddb_index));
6133         ddb_index[0] = 0xffff;
6134         ddb_index[1] = 0xffff;
6135         ret = get_fw_boot_info(ha, ddb_index);
6136         if (ret != QLA_SUCCESS) {
6137                 DEBUG2(ql4_printk(KERN_INFO, ha,
6138                                 "%s: No boot target configured.\n", __func__));
6139                 return ret;
6140         }
6141
6142         if (ql4xdisablesysfsboot)
6143                 return QLA_SUCCESS;
6144
6145         if (ddb_index[0] == 0xffff)
6146                 goto sec_target;
6147
6148         rval = qla4xxx_get_boot_target(ha, &(ha->boot_tgt.boot_pri_sess),
6149                                       ddb_index[0]);
6150         if (rval != QLA_SUCCESS) {
6151                 DEBUG2(ql4_printk(KERN_INFO, ha, "%s: Primary boot target not "
6152                                   "configured\n", __func__));
6153         } else
6154                 ret = QLA_SUCCESS;
6155
6156 sec_target:
6157         if (ddb_index[1] == 0xffff)
6158                 goto exit_get_boot_info;
6159
6160         rval = qla4xxx_get_boot_target(ha, &(ha->boot_tgt.boot_sec_sess),
6161                                       ddb_index[1]);
6162         if (rval != QLA_SUCCESS) {
6163                 DEBUG2(ql4_printk(KERN_INFO, ha, "%s: Secondary boot target not"
6164                                   " configured\n", __func__));
6165         } else
6166                 ret = QLA_SUCCESS;
6167
6168 exit_get_boot_info:
6169         return ret;
6170 }
6171
6172 static int qla4xxx_setup_boot_info(struct scsi_qla_host *ha)
6173 {
6174         struct iscsi_boot_kobj *boot_kobj;
6175
6176         if (qla4xxx_get_boot_info(ha) != QLA_SUCCESS)
6177                 return QLA_ERROR;
6178
6179         if (ql4xdisablesysfsboot) {
6180                 ql4_printk(KERN_INFO, ha,
6181                            "%s: syfsboot disabled - driver will trigger login "
6182                            "and publish session for discovery .\n", __func__);
6183                 return QLA_SUCCESS;
6184         }
6185
6186
6187         ha->boot_kset = iscsi_boot_create_host_kset(ha->host->host_no);
6188         if (!ha->boot_kset)
6189                 goto kset_free;
6190
6191         if (!scsi_host_get(ha->host))
6192                 goto kset_free;
6193         boot_kobj = iscsi_boot_create_target(ha->boot_kset, 0, ha,
6194                                              qla4xxx_show_boot_tgt_pri_info,
6195                                              qla4xxx_tgt_get_attr_visibility,
6196                                              qla4xxx_boot_release);
6197         if (!boot_kobj)
6198                 goto put_host;
6199
6200         if (!scsi_host_get(ha->host))
6201                 goto kset_free;
6202         boot_kobj = iscsi_boot_create_target(ha->boot_kset, 1, ha,
6203                                              qla4xxx_show_boot_tgt_sec_info,
6204                                              qla4xxx_tgt_get_attr_visibility,
6205                                              qla4xxx_boot_release);
6206         if (!boot_kobj)
6207                 goto put_host;
6208
6209         if (!scsi_host_get(ha->host))
6210                 goto kset_free;
6211         boot_kobj = iscsi_boot_create_initiator(ha->boot_kset, 0, ha,
6212                                                qla4xxx_show_boot_ini_info,
6213                                                qla4xxx_ini_get_attr_visibility,
6214                                                qla4xxx_boot_release);
6215         if (!boot_kobj)
6216                 goto put_host;
6217
6218         if (!scsi_host_get(ha->host))
6219                 goto kset_free;
6220         boot_kobj = iscsi_boot_create_ethernet(ha->boot_kset, 0, ha,
6221                                                qla4xxx_show_boot_eth_info,
6222                                                qla4xxx_eth_get_attr_visibility,
6223                                                qla4xxx_boot_release);
6224         if (!boot_kobj)
6225                 goto put_host;
6226
6227         return QLA_SUCCESS;
6228
6229 put_host:
6230         scsi_host_put(ha->host);
6231 kset_free:
6232         iscsi_boot_destroy_kset(ha->boot_kset);
6233         return -ENOMEM;
6234 }
6235
6236
6237 static void qla4xxx_get_param_ddb(struct ddb_entry *ddb_entry,
6238                                   struct ql4_tuple_ddb *tddb)
6239 {
6240         struct scsi_qla_host *ha;
6241         struct iscsi_cls_session *cls_sess;
6242         struct iscsi_cls_conn *cls_conn;
6243         struct iscsi_session *sess;
6244         struct iscsi_conn *conn;
6245
6246         DEBUG2(printk(KERN_INFO "Func: %s\n", __func__));
6247         ha = ddb_entry->ha;
6248         cls_sess = ddb_entry->sess;
6249         sess = cls_sess->dd_data;
6250         cls_conn = ddb_entry->conn;
6251         conn = cls_conn->dd_data;
6252
6253         tddb->tpgt = sess->tpgt;
6254         tddb->port = conn->persistent_port;
6255         strlcpy(tddb->iscsi_name, sess->targetname, ISCSI_NAME_SIZE);
6256         strlcpy(tddb->ip_addr, conn->persistent_address, DDB_IPADDR_LEN);
6257 }
6258
6259 static void qla4xxx_convert_param_ddb(struct dev_db_entry *fw_ddb_entry,
6260                                       struct ql4_tuple_ddb *tddb,
6261                                       uint8_t *flash_isid)
6262 {
6263         uint16_t options = 0;
6264
6265         tddb->tpgt = le32_to_cpu(fw_ddb_entry->tgt_portal_grp);
6266         memcpy(&tddb->iscsi_name[0], &fw_ddb_entry->iscsi_name[0],
6267                min(sizeof(tddb->iscsi_name), sizeof(fw_ddb_entry->iscsi_name)));
6268
6269         options = le16_to_cpu(fw_ddb_entry->options);
6270         if (options & DDB_OPT_IPV6_DEVICE)
6271                 sprintf(tddb->ip_addr, "%pI6", fw_ddb_entry->ip_addr);
6272         else
6273                 sprintf(tddb->ip_addr, "%pI4", fw_ddb_entry->ip_addr);
6274
6275         tddb->port = le16_to_cpu(fw_ddb_entry->port);
6276
6277         if (flash_isid == NULL)
6278                 memcpy(&tddb->isid[0], &fw_ddb_entry->isid[0],
6279                        sizeof(tddb->isid));
6280         else
6281                 memcpy(&tddb->isid[0], &flash_isid[0], sizeof(tddb->isid));
6282 }
6283
6284 static int qla4xxx_compare_tuple_ddb(struct scsi_qla_host *ha,
6285                                      struct ql4_tuple_ddb *old_tddb,
6286                                      struct ql4_tuple_ddb *new_tddb,
6287                                      uint8_t is_isid_compare)
6288 {
6289         if (strcmp(old_tddb->iscsi_name, new_tddb->iscsi_name))
6290                 return QLA_ERROR;
6291
6292         if (strcmp(old_tddb->ip_addr, new_tddb->ip_addr))
6293                 return QLA_ERROR;
6294
6295         if (old_tddb->port != new_tddb->port)
6296                 return QLA_ERROR;
6297
6298         /* For multi sessions, driver generates the ISID, so do not compare
6299          * ISID in reset path since it would be a comparison between the
6300          * driver generated ISID and firmware generated ISID. This could
6301          * lead to adding duplicated DDBs in the list as driver generated
6302          * ISID would not match firmware generated ISID.
6303          */
6304         if (is_isid_compare) {
6305                 DEBUG2(ql4_printk(KERN_INFO, ha,
6306                         "%s: old ISID [%pmR] New ISID [%pmR]\n",
6307                         __func__, old_tddb->isid, new_tddb->isid));
6308
6309                 if (memcmp(&old_tddb->isid[0], &new_tddb->isid[0],
6310                            sizeof(old_tddb->isid)))
6311                         return QLA_ERROR;
6312         }
6313
6314         DEBUG2(ql4_printk(KERN_INFO, ha,
6315                           "Match Found, fw[%d,%d,%s,%s], [%d,%d,%s,%s]",
6316                           old_tddb->port, old_tddb->tpgt, old_tddb->ip_addr,
6317                           old_tddb->iscsi_name, new_tddb->port, new_tddb->tpgt,
6318                           new_tddb->ip_addr, new_tddb->iscsi_name));
6319
6320         return QLA_SUCCESS;
6321 }
6322
6323 static int qla4xxx_is_session_exists(struct scsi_qla_host *ha,
6324                                      struct dev_db_entry *fw_ddb_entry,
6325                                      uint32_t *index)
6326 {
6327         struct ddb_entry *ddb_entry;
6328         struct ql4_tuple_ddb *fw_tddb = NULL;
6329         struct ql4_tuple_ddb *tmp_tddb = NULL;
6330         int idx;
6331         int ret = QLA_ERROR;
6332
6333         fw_tddb = vzalloc(sizeof(*fw_tddb));
6334         if (!fw_tddb) {
6335                 DEBUG2(ql4_printk(KERN_WARNING, ha,
6336                                   "Memory Allocation failed.\n"));
6337                 ret = QLA_SUCCESS;
6338                 goto exit_check;
6339         }
6340
6341         tmp_tddb = vzalloc(sizeof(*tmp_tddb));
6342         if (!tmp_tddb) {
6343                 DEBUG2(ql4_printk(KERN_WARNING, ha,
6344                                   "Memory Allocation failed.\n"));
6345                 ret = QLA_SUCCESS;
6346                 goto exit_check;
6347         }
6348
6349         qla4xxx_convert_param_ddb(fw_ddb_entry, fw_tddb, NULL);
6350
6351         for (idx = 0; idx < MAX_DDB_ENTRIES; idx++) {
6352                 ddb_entry = qla4xxx_lookup_ddb_by_fw_index(ha, idx);
6353                 if (ddb_entry == NULL)
6354                         continue;
6355
6356                 qla4xxx_get_param_ddb(ddb_entry, tmp_tddb);
6357                 if (!qla4xxx_compare_tuple_ddb(ha, fw_tddb, tmp_tddb, false)) {
6358                         ret = QLA_SUCCESS; /* found */
6359                         if (index != NULL)
6360                                 *index = idx;
6361                         goto exit_check;
6362                 }
6363         }
6364
6365 exit_check:
6366         if (fw_tddb)
6367                 vfree(fw_tddb);
6368         if (tmp_tddb)
6369                 vfree(tmp_tddb);
6370         return ret;
6371 }
6372
6373 /**
6374  * qla4xxx_check_existing_isid - check if target with same isid exist
6375  *                               in target list
6376  * @list_nt: list of target
6377  * @isid: isid to check
6378  *
6379  * This routine return QLA_SUCCESS if target with same isid exist
6380  **/
6381 static int qla4xxx_check_existing_isid(struct list_head *list_nt, uint8_t *isid)
6382 {
6383         struct qla_ddb_index *nt_ddb_idx, *nt_ddb_idx_tmp;
6384         struct dev_db_entry *fw_ddb_entry;
6385
6386         list_for_each_entry_safe(nt_ddb_idx, nt_ddb_idx_tmp, list_nt, list) {
6387                 fw_ddb_entry = &nt_ddb_idx->fw_ddb;
6388
6389                 if (memcmp(&fw_ddb_entry->isid[0], &isid[0],
6390                            sizeof(nt_ddb_idx->fw_ddb.isid)) == 0) {
6391                         return QLA_SUCCESS;
6392                 }
6393         }
6394         return QLA_ERROR;
6395 }
6396
6397 /**
6398  * qla4xxx_update_isid - compare ddbs and updated isid
6399  * @ha: Pointer to host adapter structure.
6400  * @list_nt: list of nt target
6401  * @fw_ddb_entry: firmware ddb entry
6402  *
6403  * This routine update isid if ddbs have same iqn, same isid and
6404  * different IP addr.
6405  * Return QLA_SUCCESS if isid is updated.
6406  **/
6407 static int qla4xxx_update_isid(struct scsi_qla_host *ha,
6408                                struct list_head *list_nt,
6409                                struct dev_db_entry *fw_ddb_entry)
6410 {
6411         uint8_t base_value, i;
6412
6413         base_value = fw_ddb_entry->isid[1] & 0x1f;
6414         for (i = 0; i < 8; i++) {
6415                 fw_ddb_entry->isid[1] = (base_value | (i << 5));
6416                 if (qla4xxx_check_existing_isid(list_nt, fw_ddb_entry->isid))
6417                         break;
6418         }
6419
6420         if (!qla4xxx_check_existing_isid(list_nt, fw_ddb_entry->isid))
6421                 return QLA_ERROR;
6422
6423         return QLA_SUCCESS;
6424 }
6425
6426 /**
6427  * qla4xxx_should_update_isid - check if isid need to update
6428  * @ha: Pointer to host adapter structure.
6429  * @old_tddb: ddb tuple
6430  * @new_tddb: ddb tuple
6431  *
6432  * Return QLA_SUCCESS if different IP, different PORT, same iqn,
6433  * same isid
6434  **/
6435 static int qla4xxx_should_update_isid(struct scsi_qla_host *ha,
6436                                       struct ql4_tuple_ddb *old_tddb,
6437                                       struct ql4_tuple_ddb *new_tddb)
6438 {
6439         if (strcmp(old_tddb->ip_addr, new_tddb->ip_addr) == 0) {
6440                 /* Same ip */
6441                 if (old_tddb->port == new_tddb->port)
6442                         return QLA_ERROR;
6443         }
6444
6445         if (strcmp(old_tddb->iscsi_name, new_tddb->iscsi_name))
6446                 /* different iqn */
6447                 return QLA_ERROR;
6448
6449         if (memcmp(&old_tddb->isid[0], &new_tddb->isid[0],
6450                    sizeof(old_tddb->isid)))
6451                 /* different isid */
6452                 return QLA_ERROR;
6453
6454         return QLA_SUCCESS;
6455 }
6456
6457 /**
6458  * qla4xxx_is_flash_ddb_exists - check if fw_ddb_entry already exists in list_nt
6459  * @ha: Pointer to host adapter structure.
6460  * @list_nt: list of nt target.
6461  * @fw_ddb_entry: firmware ddb entry.
6462  *
6463  * This routine check if fw_ddb_entry already exists in list_nt to avoid
6464  * duplicate ddb in list_nt.
6465  * Return QLA_SUCCESS if duplicate ddb exit in list_nl.
6466  * Note: This function also update isid of DDB if required.
6467  **/
6468
6469 static int qla4xxx_is_flash_ddb_exists(struct scsi_qla_host *ha,
6470                                        struct list_head *list_nt,
6471                                        struct dev_db_entry *fw_ddb_entry)
6472 {
6473         struct qla_ddb_index  *nt_ddb_idx, *nt_ddb_idx_tmp;
6474         struct ql4_tuple_ddb *fw_tddb = NULL;
6475         struct ql4_tuple_ddb *tmp_tddb = NULL;
6476         int rval, ret = QLA_ERROR;
6477
6478         fw_tddb = vzalloc(sizeof(*fw_tddb));
6479         if (!fw_tddb) {
6480                 DEBUG2(ql4_printk(KERN_WARNING, ha,
6481                                   "Memory Allocation failed.\n"));
6482                 ret = QLA_SUCCESS;
6483                 goto exit_check;
6484         }
6485
6486         tmp_tddb = vzalloc(sizeof(*tmp_tddb));
6487         if (!tmp_tddb) {
6488                 DEBUG2(ql4_printk(KERN_WARNING, ha,
6489                                   "Memory Allocation failed.\n"));
6490                 ret = QLA_SUCCESS;
6491                 goto exit_check;
6492         }
6493
6494         qla4xxx_convert_param_ddb(fw_ddb_entry, fw_tddb, NULL);
6495
6496         list_for_each_entry_safe(nt_ddb_idx, nt_ddb_idx_tmp, list_nt, list) {
6497                 qla4xxx_convert_param_ddb(&nt_ddb_idx->fw_ddb, tmp_tddb,
6498                                           nt_ddb_idx->flash_isid);
6499                 ret = qla4xxx_compare_tuple_ddb(ha, fw_tddb, tmp_tddb, true);
6500                 /* found duplicate ddb */
6501                 if (ret == QLA_SUCCESS)
6502                         goto exit_check;
6503         }
6504
6505         list_for_each_entry_safe(nt_ddb_idx, nt_ddb_idx_tmp, list_nt, list) {
6506                 qla4xxx_convert_param_ddb(&nt_ddb_idx->fw_ddb, tmp_tddb, NULL);
6507
6508                 ret = qla4xxx_should_update_isid(ha, tmp_tddb, fw_tddb);
6509                 if (ret == QLA_SUCCESS) {
6510                         rval = qla4xxx_update_isid(ha, list_nt, fw_ddb_entry);
6511                         if (rval == QLA_SUCCESS)
6512                                 ret = QLA_ERROR;
6513                         else
6514                                 ret = QLA_SUCCESS;
6515
6516                         goto exit_check;
6517                 }
6518         }
6519
6520 exit_check:
6521         if (fw_tddb)
6522                 vfree(fw_tddb);
6523         if (tmp_tddb)
6524                 vfree(tmp_tddb);
6525         return ret;
6526 }
6527
6528 static void qla4xxx_free_ddb_list(struct list_head *list_ddb)
6529 {
6530         struct qla_ddb_index  *ddb_idx, *ddb_idx_tmp;
6531
6532         list_for_each_entry_safe(ddb_idx, ddb_idx_tmp, list_ddb, list) {
6533                 list_del_init(&ddb_idx->list);
6534                 vfree(ddb_idx);
6535         }
6536 }
6537
6538 static struct iscsi_endpoint *qla4xxx_get_ep_fwdb(struct scsi_qla_host *ha,
6539                                         struct dev_db_entry *fw_ddb_entry)
6540 {
6541         struct iscsi_endpoint *ep;
6542         struct sockaddr_in *addr;
6543         struct sockaddr_in6 *addr6;
6544         struct sockaddr *t_addr;
6545         struct sockaddr_storage *dst_addr;
6546         char *ip;
6547
6548         /* TODO: need to destroy on unload iscsi_endpoint*/
6549         dst_addr = vmalloc(sizeof(*dst_addr));
6550         if (!dst_addr)
6551                 return NULL;
6552
6553         if (fw_ddb_entry->options & DDB_OPT_IPV6_DEVICE) {
6554                 t_addr = (struct sockaddr *)dst_addr;
6555                 t_addr->sa_family = AF_INET6;
6556                 addr6 = (struct sockaddr_in6 *)dst_addr;
6557                 ip = (char *)&addr6->sin6_addr;
6558                 memcpy(ip, fw_ddb_entry->ip_addr, IPv6_ADDR_LEN);
6559                 addr6->sin6_port = htons(le16_to_cpu(fw_ddb_entry->port));
6560
6561         } else {
6562                 t_addr = (struct sockaddr *)dst_addr;
6563                 t_addr->sa_family = AF_INET;
6564                 addr = (struct sockaddr_in *)dst_addr;
6565                 ip = (char *)&addr->sin_addr;
6566                 memcpy(ip, fw_ddb_entry->ip_addr, IP_ADDR_LEN);
6567                 addr->sin_port = htons(le16_to_cpu(fw_ddb_entry->port));
6568         }
6569
6570         ep = qla4xxx_ep_connect(ha->host, (struct sockaddr *)dst_addr, 0);
6571         vfree(dst_addr);
6572         return ep;
6573 }
6574
6575 static int qla4xxx_verify_boot_idx(struct scsi_qla_host *ha, uint16_t idx)
6576 {
6577         if (ql4xdisablesysfsboot)
6578                 return QLA_SUCCESS;
6579         if (idx == ha->pri_ddb_idx || idx == ha->sec_ddb_idx)
6580                 return QLA_ERROR;
6581         return QLA_SUCCESS;
6582 }
6583
6584 static void qla4xxx_setup_flash_ddb_entry(struct scsi_qla_host *ha,
6585                                           struct ddb_entry *ddb_entry,
6586                                           uint16_t idx)
6587 {
6588         uint16_t def_timeout;
6589
6590         ddb_entry->ddb_type = FLASH_DDB;
6591         ddb_entry->fw_ddb_index = INVALID_ENTRY;
6592         ddb_entry->fw_ddb_device_state = DDB_DS_NO_CONNECTION_ACTIVE;
6593         ddb_entry->ha = ha;
6594         ddb_entry->unblock_sess = qla4xxx_unblock_flash_ddb;
6595         ddb_entry->ddb_change = qla4xxx_flash_ddb_change;
6596         ddb_entry->chap_tbl_idx = INVALID_ENTRY;
6597
6598         atomic_set(&ddb_entry->retry_relogin_timer, INVALID_ENTRY);
6599         atomic_set(&ddb_entry->relogin_timer, 0);
6600         atomic_set(&ddb_entry->relogin_retry_count, 0);
6601         def_timeout = le16_to_cpu(ddb_entry->fw_ddb_entry.def_timeout);
6602         ddb_entry->default_relogin_timeout =
6603                 (def_timeout > LOGIN_TOV) && (def_timeout < LOGIN_TOV * 10) ?
6604                 def_timeout : LOGIN_TOV;
6605         ddb_entry->default_time2wait =
6606                 le16_to_cpu(ddb_entry->fw_ddb_entry.iscsi_def_time2wait);
6607
6608         if (ql4xdisablesysfsboot &&
6609             (idx == ha->pri_ddb_idx || idx == ha->sec_ddb_idx))
6610                 set_bit(DF_BOOT_TGT, &ddb_entry->flags);
6611 }
6612
6613 static void qla4xxx_wait_for_ip_configuration(struct scsi_qla_host *ha)
6614 {
6615         uint32_t idx = 0;
6616         uint32_t ip_idx[IP_ADDR_COUNT] = {0, 1, 2, 3}; /* 4 IP interfaces */
6617         uint32_t sts[MBOX_REG_COUNT];
6618         uint32_t ip_state;
6619         unsigned long wtime;
6620         int ret;
6621
6622         wtime = jiffies + (HZ * IP_CONFIG_TOV);
6623         do {
6624                 for (idx = 0; idx < IP_ADDR_COUNT; idx++) {
6625                         if (ip_idx[idx] == -1)
6626                                 continue;
6627
6628                         ret = qla4xxx_get_ip_state(ha, 0, ip_idx[idx], sts);
6629
6630                         if (ret == QLA_ERROR) {
6631                                 ip_idx[idx] = -1;
6632                                 continue;
6633                         }
6634
6635                         ip_state = (sts[1] & IP_STATE_MASK) >> IP_STATE_SHIFT;
6636
6637                         DEBUG2(ql4_printk(KERN_INFO, ha,
6638                                           "Waiting for IP state for idx = %d, state = 0x%x\n",
6639                                           ip_idx[idx], ip_state));
6640                         if (ip_state == IP_ADDRSTATE_UNCONFIGURED ||
6641                             ip_state == IP_ADDRSTATE_INVALID ||
6642                             ip_state == IP_ADDRSTATE_PREFERRED ||
6643                             ip_state == IP_ADDRSTATE_DEPRICATED ||
6644                             ip_state == IP_ADDRSTATE_DISABLING)
6645                                 ip_idx[idx] = -1;
6646                 }
6647
6648                 /* Break if all IP states checked */
6649                 if ((ip_idx[0] == -1) &&
6650                     (ip_idx[1] == -1) &&
6651                     (ip_idx[2] == -1) &&
6652                     (ip_idx[3] == -1))
6653                         break;
6654                 schedule_timeout_uninterruptible(HZ);
6655         } while (time_after(wtime, jiffies));
6656 }
6657
6658 static int qla4xxx_cmp_fw_stentry(struct dev_db_entry *fw_ddb_entry,
6659                                   struct dev_db_entry *flash_ddb_entry)
6660 {
6661         uint16_t options = 0;
6662         size_t ip_len = IP_ADDR_LEN;
6663
6664         options = le16_to_cpu(fw_ddb_entry->options);
6665         if (options & DDB_OPT_IPV6_DEVICE)
6666                 ip_len = IPv6_ADDR_LEN;
6667
6668         if (memcmp(fw_ddb_entry->ip_addr, flash_ddb_entry->ip_addr, ip_len))
6669                 return QLA_ERROR;
6670
6671         if (memcmp(&fw_ddb_entry->isid[0], &flash_ddb_entry->isid[0],
6672                    sizeof(fw_ddb_entry->isid)))
6673                 return QLA_ERROR;
6674
6675         if (memcmp(&fw_ddb_entry->port, &flash_ddb_entry->port,
6676                    sizeof(fw_ddb_entry->port)))
6677                 return QLA_ERROR;
6678
6679         return QLA_SUCCESS;
6680 }
6681
6682 static int qla4xxx_find_flash_st_idx(struct scsi_qla_host *ha,
6683                                      struct dev_db_entry *fw_ddb_entry,
6684                                      uint32_t fw_idx, uint32_t *flash_index)
6685 {
6686         struct dev_db_entry *flash_ddb_entry;
6687         dma_addr_t flash_ddb_entry_dma;
6688         uint32_t idx = 0;
6689         int max_ddbs;
6690         int ret = QLA_ERROR, status;
6691
6692         max_ddbs =  is_qla40XX(ha) ? MAX_DEV_DB_ENTRIES_40XX :
6693                                      MAX_DEV_DB_ENTRIES;
6694
6695         flash_ddb_entry = dma_pool_alloc(ha->fw_ddb_dma_pool, GFP_KERNEL,
6696                                          &flash_ddb_entry_dma);
6697         if (flash_ddb_entry == NULL || fw_ddb_entry == NULL) {
6698                 ql4_printk(KERN_ERR, ha, "Out of memory\n");
6699                 goto exit_find_st_idx;
6700         }
6701
6702         status = qla4xxx_flashdb_by_index(ha, flash_ddb_entry,
6703                                           flash_ddb_entry_dma, fw_idx);
6704         if (status == QLA_SUCCESS) {
6705                 status = qla4xxx_cmp_fw_stentry(fw_ddb_entry, flash_ddb_entry);
6706                 if (status == QLA_SUCCESS) {
6707                         *flash_index = fw_idx;
6708                         ret = QLA_SUCCESS;
6709                         goto exit_find_st_idx;
6710                 }
6711         }
6712
6713         for (idx = 0; idx < max_ddbs; idx++) {
6714                 status = qla4xxx_flashdb_by_index(ha, flash_ddb_entry,
6715                                                   flash_ddb_entry_dma, idx);
6716                 if (status == QLA_ERROR)
6717                         continue;
6718
6719                 status = qla4xxx_cmp_fw_stentry(fw_ddb_entry, flash_ddb_entry);
6720                 if (status == QLA_SUCCESS) {
6721                         *flash_index = idx;
6722                         ret = QLA_SUCCESS;
6723                         goto exit_find_st_idx;
6724                 }
6725         }
6726
6727         if (idx == max_ddbs)
6728                 ql4_printk(KERN_ERR, ha, "Failed to find ST [%d] in flash\n",
6729                            fw_idx);
6730
6731 exit_find_st_idx:
6732         if (flash_ddb_entry)
6733                 dma_pool_free(ha->fw_ddb_dma_pool, flash_ddb_entry,
6734                               flash_ddb_entry_dma);
6735
6736         return ret;
6737 }
6738
6739 static void qla4xxx_build_st_list(struct scsi_qla_host *ha,
6740                                   struct list_head *list_st)
6741 {
6742         struct qla_ddb_index  *st_ddb_idx;
6743         int max_ddbs;
6744         int fw_idx_size;
6745         struct dev_db_entry *fw_ddb_entry;
6746         dma_addr_t fw_ddb_dma;
6747         int ret;
6748         uint32_t idx = 0, next_idx = 0;
6749         uint32_t state = 0, conn_err = 0;
6750         uint32_t flash_index = -1;
6751         uint16_t conn_id = 0;
6752
6753         fw_ddb_entry = dma_pool_alloc(ha->fw_ddb_dma_pool, GFP_KERNEL,
6754                                       &fw_ddb_dma);
6755         if (fw_ddb_entry == NULL) {
6756                 DEBUG2(ql4_printk(KERN_ERR, ha, "Out of memory\n"));
6757                 goto exit_st_list;
6758         }
6759
6760         max_ddbs =  is_qla40XX(ha) ? MAX_DEV_DB_ENTRIES_40XX :
6761                                      MAX_DEV_DB_ENTRIES;
6762         fw_idx_size = sizeof(struct qla_ddb_index);
6763
6764         for (idx = 0; idx < max_ddbs; idx = next_idx) {
6765                 ret = qla4xxx_get_fwddb_entry(ha, idx, fw_ddb_entry, fw_ddb_dma,
6766                                               NULL, &next_idx, &state,
6767                                               &conn_err, NULL, &conn_id);
6768                 if (ret == QLA_ERROR)
6769                         break;
6770
6771                 /* Ignore DDB if invalid state (unassigned) */
6772                 if (state == DDB_DS_UNASSIGNED)
6773                         goto continue_next_st;
6774
6775                 /* Check if ST, add to the list_st */
6776                 if (strlen((char *) fw_ddb_entry->iscsi_name) != 0)
6777                         goto continue_next_st;
6778
6779                 st_ddb_idx = vzalloc(fw_idx_size);
6780                 if (!st_ddb_idx)
6781                         break;
6782
6783                 ret = qla4xxx_find_flash_st_idx(ha, fw_ddb_entry, idx,
6784                                                 &flash_index);
6785                 if (ret == QLA_ERROR) {
6786                         ql4_printk(KERN_ERR, ha,
6787                                    "No flash entry for ST at idx [%d]\n", idx);
6788                         st_ddb_idx->flash_ddb_idx = idx;
6789                 } else {
6790                         ql4_printk(KERN_INFO, ha,
6791                                    "ST at idx [%d] is stored at flash [%d]\n",
6792                                    idx, flash_index);
6793                         st_ddb_idx->flash_ddb_idx = flash_index;
6794                 }
6795
6796                 st_ddb_idx->fw_ddb_idx = idx;
6797
6798                 list_add_tail(&st_ddb_idx->list, list_st);
6799 continue_next_st:
6800                 if (next_idx == 0)
6801                         break;
6802         }
6803
6804 exit_st_list:
6805         if (fw_ddb_entry)
6806                 dma_pool_free(ha->fw_ddb_dma_pool, fw_ddb_entry, fw_ddb_dma);
6807 }
6808
6809 /**
6810  * qla4xxx_remove_failed_ddb - Remove inactive or failed ddb from list
6811  * @ha: pointer to adapter structure
6812  * @list_ddb: List from which failed ddb to be removed
6813  *
6814  * Iterate over the list of DDBs and find and remove DDBs that are either in
6815  * no connection active state or failed state
6816  **/
6817 static void qla4xxx_remove_failed_ddb(struct scsi_qla_host *ha,
6818                                       struct list_head *list_ddb)
6819 {
6820         struct qla_ddb_index  *ddb_idx, *ddb_idx_tmp;
6821         uint32_t next_idx = 0;
6822         uint32_t state = 0, conn_err = 0;
6823         int ret;
6824
6825         list_for_each_entry_safe(ddb_idx, ddb_idx_tmp, list_ddb, list) {
6826                 ret = qla4xxx_get_fwddb_entry(ha, ddb_idx->fw_ddb_idx,
6827                                               NULL, 0, NULL, &next_idx, &state,
6828                                               &conn_err, NULL, NULL);
6829                 if (ret == QLA_ERROR)
6830                         continue;
6831
6832                 if (state == DDB_DS_NO_CONNECTION_ACTIVE ||
6833                     state == DDB_DS_SESSION_FAILED) {
6834                         list_del_init(&ddb_idx->list);
6835                         vfree(ddb_idx);
6836                 }
6837         }
6838 }
6839
6840 static void qla4xxx_update_sess_disc_idx(struct scsi_qla_host *ha,
6841                                          struct ddb_entry *ddb_entry,
6842                                          struct dev_db_entry *fw_ddb_entry)
6843 {
6844         struct iscsi_cls_session *cls_sess;
6845         struct iscsi_session *sess;
6846         uint32_t max_ddbs = 0;
6847         uint16_t ddb_link = -1;
6848
6849         max_ddbs =  is_qla40XX(ha) ? MAX_DEV_DB_ENTRIES_40XX :
6850                                      MAX_DEV_DB_ENTRIES;
6851
6852         cls_sess = ddb_entry->sess;
6853         sess = cls_sess->dd_data;
6854
6855         ddb_link = le16_to_cpu(fw_ddb_entry->ddb_link);
6856         if (ddb_link < max_ddbs)
6857                 sess->discovery_parent_idx = ddb_link;
6858         else
6859                 sess->discovery_parent_idx = DDB_NO_LINK;
6860 }
6861
6862 static int qla4xxx_sess_conn_setup(struct scsi_qla_host *ha,
6863                                    struct dev_db_entry *fw_ddb_entry,
6864                                    int is_reset, uint16_t idx)
6865 {
6866         struct iscsi_cls_session *cls_sess;
6867         struct iscsi_session *sess;
6868         struct iscsi_cls_conn *cls_conn;
6869         struct iscsi_endpoint *ep;
6870         uint16_t cmds_max = 32;
6871         uint16_t conn_id = 0;
6872         uint32_t initial_cmdsn = 0;
6873         int ret = QLA_SUCCESS;
6874
6875         struct ddb_entry *ddb_entry = NULL;
6876
6877         /* Create session object, with INVALID_ENTRY,
6878          * the targer_id would get set when we issue the login
6879          */
6880         cls_sess = iscsi_session_setup(&qla4xxx_iscsi_transport, ha->host,
6881                                        cmds_max, sizeof(struct ddb_entry),
6882                                        sizeof(struct ql4_task_data),
6883                                        initial_cmdsn, INVALID_ENTRY);
6884         if (!cls_sess) {
6885                 ret = QLA_ERROR;
6886                 goto exit_setup;
6887         }
6888
6889         /*
6890          * so calling module_put function to decrement the
6891          * reference count.
6892          **/
6893         module_put(qla4xxx_iscsi_transport.owner);
6894         sess = cls_sess->dd_data;
6895         ddb_entry = sess->dd_data;
6896         ddb_entry->sess = cls_sess;
6897
6898         cls_sess->recovery_tmo = ql4xsess_recovery_tmo;
6899         memcpy(&ddb_entry->fw_ddb_entry, fw_ddb_entry,
6900                sizeof(struct dev_db_entry));
6901
6902         qla4xxx_setup_flash_ddb_entry(ha, ddb_entry, idx);
6903
6904         cls_conn = iscsi_conn_setup(cls_sess, sizeof(struct qla_conn), conn_id);
6905
6906         if (!cls_conn) {
6907                 ret = QLA_ERROR;
6908                 goto exit_setup;
6909         }
6910
6911         ddb_entry->conn = cls_conn;
6912
6913         /* Setup ep, for displaying attributes in sysfs */
6914         ep = qla4xxx_get_ep_fwdb(ha, fw_ddb_entry);
6915         if (ep) {
6916                 ep->conn = cls_conn;
6917                 cls_conn->ep = ep;
6918         } else {
6919                 DEBUG2(ql4_printk(KERN_ERR, ha, "Unable to get ep\n"));
6920                 ret = QLA_ERROR;
6921                 goto exit_setup;
6922         }
6923
6924         /* Update sess/conn params */
6925         qla4xxx_copy_fwddb_param(ha, fw_ddb_entry, cls_sess, cls_conn);
6926         qla4xxx_update_sess_disc_idx(ha, ddb_entry, fw_ddb_entry);
6927
6928         if (is_reset == RESET_ADAPTER) {
6929                 iscsi_block_session(cls_sess);
6930                 /* Use the relogin path to discover new devices
6931                  *  by short-circuting the logic of setting
6932                  *  timer to relogin - instead set the flags
6933                  *  to initiate login right away.
6934                  */
6935                 set_bit(DPC_RELOGIN_DEVICE, &ha->dpc_flags);
6936                 set_bit(DF_RELOGIN, &ddb_entry->flags);
6937         }
6938
6939 exit_setup:
6940         return ret;
6941 }
6942
6943 static void qla4xxx_update_fw_ddb_link(struct scsi_qla_host *ha,
6944                                        struct list_head *list_ddb,
6945                                        struct dev_db_entry *fw_ddb_entry)
6946 {
6947         struct qla_ddb_index  *ddb_idx, *ddb_idx_tmp;
6948         uint16_t ddb_link;
6949
6950         ddb_link = le16_to_cpu(fw_ddb_entry->ddb_link);
6951
6952         list_for_each_entry_safe(ddb_idx, ddb_idx_tmp, list_ddb, list) {
6953                 if (ddb_idx->fw_ddb_idx == ddb_link) {
6954                         DEBUG2(ql4_printk(KERN_INFO, ha,
6955                                           "Updating NT parent idx from [%d] to [%d]\n",
6956                                           ddb_link, ddb_idx->flash_ddb_idx));
6957                         fw_ddb_entry->ddb_link =
6958                                             cpu_to_le16(ddb_idx->flash_ddb_idx);
6959                         return;
6960                 }
6961         }
6962 }
6963
6964 static void qla4xxx_build_nt_list(struct scsi_qla_host *ha,
6965                                   struct list_head *list_nt,
6966                                   struct list_head *list_st,
6967                                   int is_reset)
6968 {
6969         struct dev_db_entry *fw_ddb_entry;
6970         struct ddb_entry *ddb_entry = NULL;
6971         dma_addr_t fw_ddb_dma;
6972         int max_ddbs;
6973         int fw_idx_size;
6974         int ret;
6975         uint32_t idx = 0, next_idx = 0;
6976         uint32_t state = 0, conn_err = 0;
6977         uint32_t ddb_idx = -1;
6978         uint16_t conn_id = 0;
6979         uint16_t ddb_link = -1;
6980         struct qla_ddb_index  *nt_ddb_idx;
6981
6982         fw_ddb_entry = dma_pool_alloc(ha->fw_ddb_dma_pool, GFP_KERNEL,
6983                                       &fw_ddb_dma);
6984         if (fw_ddb_entry == NULL) {
6985                 DEBUG2(ql4_printk(KERN_ERR, ha, "Out of memory\n"));
6986                 goto exit_nt_list;
6987         }
6988         max_ddbs =  is_qla40XX(ha) ? MAX_DEV_DB_ENTRIES_40XX :
6989                                      MAX_DEV_DB_ENTRIES;
6990         fw_idx_size = sizeof(struct qla_ddb_index);
6991
6992         for (idx = 0; idx < max_ddbs; idx = next_idx) {
6993                 ret = qla4xxx_get_fwddb_entry(ha, idx, fw_ddb_entry, fw_ddb_dma,
6994                                               NULL, &next_idx, &state,
6995                                               &conn_err, NULL, &conn_id);
6996                 if (ret == QLA_ERROR)
6997                         break;
6998
6999                 if (qla4xxx_verify_boot_idx(ha, idx) != QLA_SUCCESS)
7000                         goto continue_next_nt;
7001
7002                 /* Check if NT, then add to list it */
7003                 if (strlen((char *) fw_ddb_entry->iscsi_name) == 0)
7004                         goto continue_next_nt;
7005
7006                 ddb_link = le16_to_cpu(fw_ddb_entry->ddb_link);
7007                 if (ddb_link < max_ddbs)
7008                         qla4xxx_update_fw_ddb_link(ha, list_st, fw_ddb_entry);
7009
7010                 if (!(state == DDB_DS_NO_CONNECTION_ACTIVE ||
7011                     state == DDB_DS_SESSION_FAILED) &&
7012                     (is_reset == INIT_ADAPTER))
7013                         goto continue_next_nt;
7014
7015                 DEBUG2(ql4_printk(KERN_INFO, ha,
7016                                   "Adding  DDB to session = 0x%x\n", idx));
7017
7018                 if (is_reset == INIT_ADAPTER) {
7019                         nt_ddb_idx = vmalloc(fw_idx_size);
7020                         if (!nt_ddb_idx)
7021                                 break;
7022
7023                         nt_ddb_idx->fw_ddb_idx = idx;
7024
7025                         /* Copy original isid as it may get updated in function
7026                          * qla4xxx_update_isid(). We need original isid in
7027                          * function qla4xxx_compare_tuple_ddb to find duplicate
7028                          * target */
7029                         memcpy(&nt_ddb_idx->flash_isid[0],
7030                                &fw_ddb_entry->isid[0],
7031                                sizeof(nt_ddb_idx->flash_isid));
7032
7033                         ret = qla4xxx_is_flash_ddb_exists(ha, list_nt,
7034                                                           fw_ddb_entry);
7035                         if (ret == QLA_SUCCESS) {
7036                                 /* free nt_ddb_idx and do not add to list_nt */
7037                                 vfree(nt_ddb_idx);
7038                                 goto continue_next_nt;
7039                         }
7040
7041                         /* Copy updated isid */
7042                         memcpy(&nt_ddb_idx->fw_ddb, fw_ddb_entry,
7043                                sizeof(struct dev_db_entry));
7044
7045                         list_add_tail(&nt_ddb_idx->list, list_nt);
7046                 } else if (is_reset == RESET_ADAPTER) {
7047                         ret = qla4xxx_is_session_exists(ha, fw_ddb_entry,
7048                                                         &ddb_idx);
7049                         if (ret == QLA_SUCCESS) {
7050                                 ddb_entry = qla4xxx_lookup_ddb_by_fw_index(ha,
7051                                                                        ddb_idx);
7052                                 if (ddb_entry != NULL)
7053                                         qla4xxx_update_sess_disc_idx(ha,
7054                                                                      ddb_entry,
7055                                                                   fw_ddb_entry);
7056                                 goto continue_next_nt;
7057                         }
7058                 }
7059
7060                 ret = qla4xxx_sess_conn_setup(ha, fw_ddb_entry, is_reset, idx);
7061                 if (ret == QLA_ERROR)
7062                         goto exit_nt_list;
7063
7064 continue_next_nt:
7065                 if (next_idx == 0)
7066                         break;
7067         }
7068
7069 exit_nt_list:
7070         if (fw_ddb_entry)
7071                 dma_pool_free(ha->fw_ddb_dma_pool, fw_ddb_entry, fw_ddb_dma);
7072 }
7073
7074 static void qla4xxx_build_new_nt_list(struct scsi_qla_host *ha,
7075                                       struct list_head *list_nt,
7076                                       uint16_t target_id)
7077 {
7078         struct dev_db_entry *fw_ddb_entry;
7079         dma_addr_t fw_ddb_dma;
7080         int max_ddbs;
7081         int fw_idx_size;
7082         int ret;
7083         uint32_t idx = 0, next_idx = 0;
7084         uint32_t state = 0, conn_err = 0;
7085         uint16_t conn_id = 0;
7086         struct qla_ddb_index  *nt_ddb_idx;
7087
7088         fw_ddb_entry = dma_pool_alloc(ha->fw_ddb_dma_pool, GFP_KERNEL,
7089                                       &fw_ddb_dma);
7090         if (fw_ddb_entry == NULL) {
7091                 DEBUG2(ql4_printk(KERN_ERR, ha, "Out of memory\n"));
7092                 goto exit_new_nt_list;
7093         }
7094         max_ddbs =  is_qla40XX(ha) ? MAX_DEV_DB_ENTRIES_40XX :
7095                                      MAX_DEV_DB_ENTRIES;
7096         fw_idx_size = sizeof(struct qla_ddb_index);
7097
7098         for (idx = 0; idx < max_ddbs; idx = next_idx) {
7099                 ret = qla4xxx_get_fwddb_entry(ha, idx, fw_ddb_entry, fw_ddb_dma,
7100                                               NULL, &next_idx, &state,
7101                                               &conn_err, NULL, &conn_id);
7102                 if (ret == QLA_ERROR)
7103                         break;
7104
7105                 /* Check if NT, then add it to list */
7106                 if (strlen((char *)fw_ddb_entry->iscsi_name) == 0)
7107                         goto continue_next_new_nt;
7108
7109                 if (!(state == DDB_DS_NO_CONNECTION_ACTIVE))
7110                         goto continue_next_new_nt;
7111
7112                 DEBUG2(ql4_printk(KERN_INFO, ha,
7113                                   "Adding  DDB to session = 0x%x\n", idx));
7114
7115                 nt_ddb_idx = vmalloc(fw_idx_size);
7116                 if (!nt_ddb_idx)
7117                         break;
7118
7119                 nt_ddb_idx->fw_ddb_idx = idx;
7120
7121                 ret = qla4xxx_is_session_exists(ha, fw_ddb_entry, NULL);
7122                 if (ret == QLA_SUCCESS) {
7123                         /* free nt_ddb_idx and do not add to list_nt */
7124                         vfree(nt_ddb_idx);
7125                         goto continue_next_new_nt;
7126                 }
7127
7128                 if (target_id < max_ddbs)
7129                         fw_ddb_entry->ddb_link = cpu_to_le16(target_id);
7130
7131                 list_add_tail(&nt_ddb_idx->list, list_nt);
7132
7133                 ret = qla4xxx_sess_conn_setup(ha, fw_ddb_entry, RESET_ADAPTER,
7134                                               idx);
7135                 if (ret == QLA_ERROR)
7136                         goto exit_new_nt_list;
7137
7138 continue_next_new_nt:
7139                 if (next_idx == 0)
7140                         break;
7141         }
7142
7143 exit_new_nt_list:
7144         if (fw_ddb_entry)
7145                 dma_pool_free(ha->fw_ddb_dma_pool, fw_ddb_entry, fw_ddb_dma);
7146 }
7147
7148 /**
7149  * qla4xxx_sysfs_ddb_is_non_persistent - check for non-persistence of ddb entry
7150  * @dev: dev associated with the sysfs entry
7151  * @data: pointer to flashnode session object
7152  *
7153  * Returns:
7154  *      1: if flashnode entry is non-persistent
7155  *      0: if flashnode entry is persistent
7156  **/
7157 static int qla4xxx_sysfs_ddb_is_non_persistent(struct device *dev, void *data)
7158 {
7159         struct iscsi_bus_flash_session *fnode_sess;
7160
7161         if (!iscsi_flashnode_bus_match(dev, NULL))
7162                 return 0;
7163
7164         fnode_sess = iscsi_dev_to_flash_session(dev);
7165
7166         return (fnode_sess->flash_state == DEV_DB_NON_PERSISTENT);
7167 }
7168
7169 /**
7170  * qla4xxx_sysfs_ddb_tgt_create - Create sysfs entry for target
7171  * @ha: pointer to host
7172  * @fw_ddb_entry: flash ddb data
7173  * @idx: target index
7174  * @user: if set then this call is made from userland else from kernel
7175  *
7176  * Returns:
7177  * On sucess: QLA_SUCCESS
7178  * On failure: QLA_ERROR
7179  *
7180  * This create separate sysfs entries for session and connection attributes of
7181  * the given fw ddb entry.
7182  * If this is invoked as a result of a userspace call then the entry is marked
7183  * as nonpersistent using flash_state field.
7184  **/
7185 static int qla4xxx_sysfs_ddb_tgt_create(struct scsi_qla_host *ha,
7186                                         struct dev_db_entry *fw_ddb_entry,
7187                                         uint16_t *idx, int user)
7188 {
7189         struct iscsi_bus_flash_session *fnode_sess = NULL;
7190         struct iscsi_bus_flash_conn *fnode_conn = NULL;
7191         int rc = QLA_ERROR;
7192
7193         fnode_sess = iscsi_create_flashnode_sess(ha->host, *idx,
7194                                                  &qla4xxx_iscsi_transport, 0);
7195         if (!fnode_sess) {
7196                 ql4_printk(KERN_ERR, ha,
7197                            "%s: Unable to create session sysfs entry for flashnode %d of host%lu\n",
7198                            __func__, *idx, ha->host_no);
7199                 goto exit_tgt_create;
7200         }
7201
7202         fnode_conn = iscsi_create_flashnode_conn(ha->host, fnode_sess,
7203                                                  &qla4xxx_iscsi_transport, 0);
7204         if (!fnode_conn) {
7205                 ql4_printk(KERN_ERR, ha,
7206                            "%s: Unable to create conn sysfs entry for flashnode %d of host%lu\n",
7207                            __func__, *idx, ha->host_no);
7208                 goto free_sess;
7209         }
7210
7211         if (user) {
7212                 fnode_sess->flash_state = DEV_DB_NON_PERSISTENT;
7213         } else {
7214                 fnode_sess->flash_state = DEV_DB_PERSISTENT;
7215
7216                 if (*idx == ha->pri_ddb_idx || *idx == ha->sec_ddb_idx)
7217                         fnode_sess->is_boot_target = 1;
7218                 else
7219                         fnode_sess->is_boot_target = 0;
7220         }
7221
7222         rc = qla4xxx_copy_from_fwddb_param(fnode_sess, fnode_conn,
7223                                            fw_ddb_entry);
7224
7225         ql4_printk(KERN_INFO, ha, "%s: sysfs entry %s created\n",
7226                    __func__, fnode_sess->dev.kobj.name);
7227
7228         ql4_printk(KERN_INFO, ha, "%s: sysfs entry %s created\n",
7229                    __func__, fnode_conn->dev.kobj.name);
7230
7231         return QLA_SUCCESS;
7232
7233 free_sess:
7234         iscsi_destroy_flashnode_sess(fnode_sess);
7235
7236 exit_tgt_create:
7237         return QLA_ERROR;
7238 }
7239
7240 /**
7241  * qla4xxx_sysfs_ddb_add - Add new ddb entry in flash
7242  * @shost: pointer to host
7243  * @buf: type of ddb entry (ipv4/ipv6)
7244  * @len: length of buf
7245  *
7246  * This creates new ddb entry in the flash by finding first free index and
7247  * storing default ddb there. And then create sysfs entry for the new ddb entry.
7248  **/
7249 static int qla4xxx_sysfs_ddb_add(struct Scsi_Host *shost, const char *buf,
7250                                  int len)
7251 {
7252         struct scsi_qla_host *ha = to_qla_host(shost);
7253         struct dev_db_entry *fw_ddb_entry = NULL;
7254         dma_addr_t fw_ddb_entry_dma;
7255         struct device *dev;
7256         uint16_t idx = 0;
7257         uint16_t max_ddbs = 0;
7258         uint32_t options = 0;
7259         uint32_t rval = QLA_ERROR;
7260
7261         if (strncasecmp(PORTAL_TYPE_IPV4, buf, 4) &&
7262             strncasecmp(PORTAL_TYPE_IPV6, buf, 4)) {
7263                 DEBUG2(ql4_printk(KERN_ERR, ha, "%s: Invalid portal type\n",
7264                                   __func__));
7265                 goto exit_ddb_add;
7266         }
7267
7268         max_ddbs =  is_qla40XX(ha) ? MAX_PRST_DEV_DB_ENTRIES :
7269                                      MAX_DEV_DB_ENTRIES;
7270
7271         fw_ddb_entry = dma_alloc_coherent(&ha->pdev->dev, sizeof(*fw_ddb_entry),
7272                                           &fw_ddb_entry_dma, GFP_KERNEL);
7273         if (!fw_ddb_entry) {
7274                 DEBUG2(ql4_printk(KERN_ERR, ha,
7275                                   "%s: Unable to allocate dma buffer\n",
7276                                   __func__));
7277                 goto exit_ddb_add;
7278         }
7279
7280         dev = iscsi_find_flashnode_sess(ha->host, NULL,
7281                                         qla4xxx_sysfs_ddb_is_non_persistent);
7282         if (dev) {
7283                 ql4_printk(KERN_ERR, ha,
7284                            "%s: A non-persistent entry %s found\n",
7285                            __func__, dev->kobj.name);
7286                 put_device(dev);
7287                 goto exit_ddb_add;
7288         }
7289
7290         /* Index 0 and 1 are reserved for boot target entries */
7291         for (idx = 2; idx < max_ddbs; idx++) {
7292                 if (qla4xxx_flashdb_by_index(ha, fw_ddb_entry,
7293                                              fw_ddb_entry_dma, idx))
7294                         break;
7295         }
7296
7297         if (idx == max_ddbs)
7298                 goto exit_ddb_add;
7299
7300         if (!strncasecmp("ipv6", buf, 4))
7301                 options |= IPV6_DEFAULT_DDB_ENTRY;
7302
7303         rval = qla4xxx_get_default_ddb(ha, options, fw_ddb_entry_dma);
7304         if (rval == QLA_ERROR)
7305                 goto exit_ddb_add;
7306
7307         rval = qla4xxx_sysfs_ddb_tgt_create(ha, fw_ddb_entry, &idx, 1);
7308
7309 exit_ddb_add:
7310         if (fw_ddb_entry)
7311                 dma_free_coherent(&ha->pdev->dev, sizeof(*fw_ddb_entry),
7312                                   fw_ddb_entry, fw_ddb_entry_dma);
7313         if (rval == QLA_SUCCESS)
7314                 return idx;
7315         else
7316                 return -EIO;
7317 }
7318
7319 /**
7320  * qla4xxx_sysfs_ddb_apply - write the target ddb contents to Flash
7321  * @fnode_sess: pointer to session attrs of flash ddb entry
7322  * @fnode_conn: pointer to connection attrs of flash ddb entry
7323  *
7324  * This writes the contents of target ddb buffer to Flash with a valid cookie
7325  * value in order to make the ddb entry persistent.
7326  **/
7327 static int  qla4xxx_sysfs_ddb_apply(struct iscsi_bus_flash_session *fnode_sess,
7328                                     struct iscsi_bus_flash_conn *fnode_conn)
7329 {
7330         struct Scsi_Host *shost = iscsi_flash_session_to_shost(fnode_sess);
7331         struct scsi_qla_host *ha = to_qla_host(shost);
7332         uint32_t dev_db_start_offset = FLASH_OFFSET_DB_INFO;
7333         struct dev_db_entry *fw_ddb_entry = NULL;
7334         dma_addr_t fw_ddb_entry_dma;
7335         uint32_t options = 0;
7336         int rval = 0;
7337
7338         fw_ddb_entry = dma_alloc_coherent(&ha->pdev->dev, sizeof(*fw_ddb_entry),
7339                                           &fw_ddb_entry_dma, GFP_KERNEL);
7340         if (!fw_ddb_entry) {
7341                 DEBUG2(ql4_printk(KERN_ERR, ha,
7342                                   "%s: Unable to allocate dma buffer\n",
7343                                   __func__));
7344                 rval = -ENOMEM;
7345                 goto exit_ddb_apply;
7346         }
7347
7348         if (!strncasecmp(fnode_sess->portal_type, PORTAL_TYPE_IPV6, 4))
7349                 options |= IPV6_DEFAULT_DDB_ENTRY;
7350
7351         rval = qla4xxx_get_default_ddb(ha, options, fw_ddb_entry_dma);
7352         if (rval == QLA_ERROR)
7353                 goto exit_ddb_apply;
7354
7355         dev_db_start_offset += (fnode_sess->target_id *
7356                                 sizeof(*fw_ddb_entry));
7357
7358         qla4xxx_copy_to_fwddb_param(fnode_sess, fnode_conn, fw_ddb_entry);
7359         fw_ddb_entry->cookie = DDB_VALID_COOKIE;
7360
7361         rval = qla4xxx_set_flash(ha, fw_ddb_entry_dma, dev_db_start_offset,
7362                                  sizeof(*fw_ddb_entry), FLASH_OPT_RMW_COMMIT);
7363
7364         if (rval == QLA_SUCCESS) {
7365                 fnode_sess->flash_state = DEV_DB_PERSISTENT;
7366                 ql4_printk(KERN_INFO, ha,
7367                            "%s: flash node %u of host %lu written to flash\n",
7368                            __func__, fnode_sess->target_id, ha->host_no);
7369         } else {
7370                 rval = -EIO;
7371                 ql4_printk(KERN_ERR, ha,
7372                            "%s: Error while writing flash node %u of host %lu to flash\n",
7373                            __func__, fnode_sess->target_id, ha->host_no);
7374         }
7375
7376 exit_ddb_apply:
7377         if (fw_ddb_entry)
7378                 dma_free_coherent(&ha->pdev->dev, sizeof(*fw_ddb_entry),
7379                                   fw_ddb_entry, fw_ddb_entry_dma);
7380         return rval;
7381 }
7382
7383 static ssize_t qla4xxx_sysfs_ddb_conn_open(struct scsi_qla_host *ha,
7384                                            struct dev_db_entry *fw_ddb_entry,
7385                                            uint16_t idx)
7386 {
7387         struct dev_db_entry *ddb_entry = NULL;
7388         dma_addr_t ddb_entry_dma;
7389         unsigned long wtime;
7390         uint32_t mbx_sts = 0;
7391         uint32_t state = 0, conn_err = 0;
7392         uint16_t tmo = 0;
7393         int ret = 0;
7394
7395         ddb_entry = dma_alloc_coherent(&ha->pdev->dev, sizeof(*ddb_entry),
7396                                        &ddb_entry_dma, GFP_KERNEL);
7397         if (!ddb_entry) {
7398                 DEBUG2(ql4_printk(KERN_ERR, ha,
7399                                   "%s: Unable to allocate dma buffer\n",
7400                                   __func__));
7401                 return QLA_ERROR;
7402         }
7403
7404         memcpy(ddb_entry, fw_ddb_entry, sizeof(*ddb_entry));
7405
7406         ret = qla4xxx_set_ddb_entry(ha, idx, ddb_entry_dma, &mbx_sts);
7407         if (ret != QLA_SUCCESS) {
7408                 DEBUG2(ql4_printk(KERN_ERR, ha,
7409                                   "%s: Unable to set ddb entry for index %d\n",
7410                                   __func__, idx));
7411                 goto exit_ddb_conn_open;
7412         }
7413
7414         qla4xxx_conn_open(ha, idx);
7415
7416         /* To ensure that sendtargets is done, wait for at least 12 secs */
7417         tmo = ((ha->def_timeout > LOGIN_TOV) &&
7418                (ha->def_timeout < LOGIN_TOV * 10) ?
7419                ha->def_timeout : LOGIN_TOV);
7420
7421         DEBUG2(ql4_printk(KERN_INFO, ha,
7422                           "Default time to wait for login to ddb %d\n", tmo));
7423
7424         wtime = jiffies + (HZ * tmo);
7425         do {
7426                 ret = qla4xxx_get_fwddb_entry(ha, idx, NULL, 0, NULL,
7427                                               NULL, &state, &conn_err, NULL,
7428                                               NULL);
7429                 if (ret == QLA_ERROR)
7430                         continue;
7431
7432                 if (state == DDB_DS_NO_CONNECTION_ACTIVE ||
7433                     state == DDB_DS_SESSION_FAILED)
7434                         break;
7435
7436                 schedule_timeout_uninterruptible(HZ / 10);
7437         } while (time_after(wtime, jiffies));
7438
7439 exit_ddb_conn_open:
7440         if (ddb_entry)
7441                 dma_free_coherent(&ha->pdev->dev, sizeof(*ddb_entry),
7442                                   ddb_entry, ddb_entry_dma);
7443         return ret;
7444 }
7445
7446 static int qla4xxx_ddb_login_st(struct scsi_qla_host *ha,
7447                                 struct dev_db_entry *fw_ddb_entry,
7448                                 uint16_t target_id)
7449 {
7450         struct qla_ddb_index *ddb_idx, *ddb_idx_tmp;
7451         struct list_head list_nt;
7452         uint16_t ddb_index;
7453         int ret = 0;
7454
7455         if (test_bit(AF_ST_DISCOVERY_IN_PROGRESS, &ha->flags)) {
7456                 ql4_printk(KERN_WARNING, ha,
7457                            "%s: A discovery already in progress!\n", __func__);
7458                 return QLA_ERROR;
7459         }
7460
7461         INIT_LIST_HEAD(&list_nt);
7462
7463         set_bit(AF_ST_DISCOVERY_IN_PROGRESS, &ha->flags);
7464
7465         ret = qla4xxx_get_ddb_index(ha, &ddb_index);
7466         if (ret == QLA_ERROR)
7467                 goto exit_login_st_clr_bit;
7468
7469         ret = qla4xxx_sysfs_ddb_conn_open(ha, fw_ddb_entry, ddb_index);
7470         if (ret == QLA_ERROR)
7471                 goto exit_login_st;
7472
7473         qla4xxx_build_new_nt_list(ha, &list_nt, target_id);
7474
7475         list_for_each_entry_safe(ddb_idx, ddb_idx_tmp, &list_nt, list) {
7476                 list_del_init(&ddb_idx->list);
7477                 qla4xxx_clear_ddb_entry(ha, ddb_idx->fw_ddb_idx);
7478                 vfree(ddb_idx);
7479         }
7480
7481 exit_login_st:
7482         if (qla4xxx_clear_ddb_entry(ha, ddb_index) == QLA_ERROR) {
7483                 ql4_printk(KERN_ERR, ha,
7484                            "Unable to clear DDB index = 0x%x\n", ddb_index);
7485         }
7486
7487         clear_bit(ddb_index, ha->ddb_idx_map);
7488
7489 exit_login_st_clr_bit:
7490         clear_bit(AF_ST_DISCOVERY_IN_PROGRESS, &ha->flags);
7491         return ret;
7492 }
7493
7494 static int qla4xxx_ddb_login_nt(struct scsi_qla_host *ha,
7495                                 struct dev_db_entry *fw_ddb_entry,
7496                                 uint16_t idx)
7497 {
7498         int ret = QLA_ERROR;
7499
7500         ret = qla4xxx_is_session_exists(ha, fw_ddb_entry, NULL);
7501         if (ret != QLA_SUCCESS)
7502                 ret = qla4xxx_sess_conn_setup(ha, fw_ddb_entry, RESET_ADAPTER,
7503                                               idx);
7504         else
7505                 ret = -EPERM;
7506
7507         return ret;
7508 }
7509
7510 /**
7511  * qla4xxx_sysfs_ddb_login - Login to the specified target
7512  * @fnode_sess: pointer to session attrs of flash ddb entry
7513  * @fnode_conn: pointer to connection attrs of flash ddb entry
7514  *
7515  * This logs in to the specified target
7516  **/
7517 static int qla4xxx_sysfs_ddb_login(struct iscsi_bus_flash_session *fnode_sess,
7518                                    struct iscsi_bus_flash_conn *fnode_conn)
7519 {
7520         struct Scsi_Host *shost = iscsi_flash_session_to_shost(fnode_sess);
7521         struct scsi_qla_host *ha = to_qla_host(shost);
7522         struct dev_db_entry *fw_ddb_entry = NULL;
7523         dma_addr_t fw_ddb_entry_dma;
7524         uint32_t options = 0;
7525         int ret = 0;
7526
7527         if (fnode_sess->flash_state == DEV_DB_NON_PERSISTENT) {
7528                 ql4_printk(KERN_ERR, ha,
7529                            "%s: Target info is not persistent\n", __func__);
7530                 ret = -EIO;
7531                 goto exit_ddb_login;
7532         }
7533
7534         fw_ddb_entry = dma_alloc_coherent(&ha->pdev->dev, sizeof(*fw_ddb_entry),
7535                                           &fw_ddb_entry_dma, GFP_KERNEL);
7536         if (!fw_ddb_entry) {
7537                 DEBUG2(ql4_printk(KERN_ERR, ha,
7538                                   "%s: Unable to allocate dma buffer\n",
7539                                   __func__));
7540                 ret = -ENOMEM;
7541                 goto exit_ddb_login;
7542         }
7543
7544         if (!strncasecmp(fnode_sess->portal_type, PORTAL_TYPE_IPV6, 4))
7545                 options |= IPV6_DEFAULT_DDB_ENTRY;
7546
7547         ret = qla4xxx_get_default_ddb(ha, options, fw_ddb_entry_dma);
7548         if (ret == QLA_ERROR)
7549                 goto exit_ddb_login;
7550
7551         qla4xxx_copy_to_fwddb_param(fnode_sess, fnode_conn, fw_ddb_entry);
7552         fw_ddb_entry->cookie = DDB_VALID_COOKIE;
7553
7554         if (strlen((char *)fw_ddb_entry->iscsi_name) == 0)
7555                 ret = qla4xxx_ddb_login_st(ha, fw_ddb_entry,
7556                                            fnode_sess->target_id);
7557         else
7558                 ret = qla4xxx_ddb_login_nt(ha, fw_ddb_entry,
7559                                            fnode_sess->target_id);
7560
7561         if (ret > 0)
7562                 ret = -EIO;
7563
7564 exit_ddb_login:
7565         if (fw_ddb_entry)
7566                 dma_free_coherent(&ha->pdev->dev, sizeof(*fw_ddb_entry),
7567                                   fw_ddb_entry, fw_ddb_entry_dma);
7568         return ret;
7569 }
7570
7571 /**
7572  * qla4xxx_sysfs_ddb_logout_sid - Logout session for the specified target
7573  * @cls_sess: pointer to session to be logged out
7574  *
7575  * This performs session log out from the specified target
7576  **/
7577 static int qla4xxx_sysfs_ddb_logout_sid(struct iscsi_cls_session *cls_sess)
7578 {
7579         struct iscsi_session *sess;
7580         struct ddb_entry *ddb_entry = NULL;
7581         struct scsi_qla_host *ha;
7582         struct dev_db_entry *fw_ddb_entry = NULL;
7583         dma_addr_t fw_ddb_entry_dma;
7584         unsigned long flags;
7585         unsigned long wtime;
7586         uint32_t ddb_state;
7587         int options;
7588         int ret = 0;
7589
7590         sess = cls_sess->dd_data;
7591         ddb_entry = sess->dd_data;
7592         ha = ddb_entry->ha;
7593
7594         if (ddb_entry->ddb_type != FLASH_DDB) {
7595                 ql4_printk(KERN_ERR, ha, "%s: Not a flash node session\n",
7596                            __func__);
7597                 ret = -ENXIO;
7598                 goto exit_ddb_logout;
7599         }
7600
7601         if (test_bit(DF_BOOT_TGT, &ddb_entry->flags)) {
7602                 ql4_printk(KERN_ERR, ha,
7603                            "%s: Logout from boot target entry is not permitted.\n",
7604                            __func__);
7605                 ret = -EPERM;
7606                 goto exit_ddb_logout;
7607         }
7608
7609         fw_ddb_entry = dma_alloc_coherent(&ha->pdev->dev, sizeof(*fw_ddb_entry),
7610                                           &fw_ddb_entry_dma, GFP_KERNEL);
7611         if (!fw_ddb_entry) {
7612                 ql4_printk(KERN_ERR, ha,
7613                            "%s: Unable to allocate dma buffer\n", __func__);
7614                 ret = -ENOMEM;
7615                 goto exit_ddb_logout;
7616         }
7617
7618         if (test_and_set_bit(DF_DISABLE_RELOGIN, &ddb_entry->flags))
7619                 goto ddb_logout_init;
7620
7621         ret = qla4xxx_get_fwddb_entry(ha, ddb_entry->fw_ddb_index,
7622                                       fw_ddb_entry, fw_ddb_entry_dma,
7623                                       NULL, NULL, &ddb_state, NULL,
7624                                       NULL, NULL);
7625         if (ret == QLA_ERROR)
7626                 goto ddb_logout_init;
7627
7628         if (ddb_state == DDB_DS_SESSION_ACTIVE)
7629                 goto ddb_logout_init;
7630
7631         /* wait until next relogin is triggered using DF_RELOGIN and
7632          * clear DF_RELOGIN to avoid invocation of further relogin
7633          */
7634         wtime = jiffies + (HZ * RELOGIN_TOV);
7635         do {
7636                 if (test_and_clear_bit(DF_RELOGIN, &ddb_entry->flags))
7637                         goto ddb_logout_init;
7638
7639                 schedule_timeout_uninterruptible(HZ);
7640         } while ((time_after(wtime, jiffies)));
7641
7642 ddb_logout_init:
7643         atomic_set(&ddb_entry->retry_relogin_timer, INVALID_ENTRY);
7644         atomic_set(&ddb_entry->relogin_timer, 0);
7645
7646         options = LOGOUT_OPTION_CLOSE_SESSION;
7647         qla4xxx_session_logout_ddb(ha, ddb_entry, options);
7648
7649         memset(fw_ddb_entry, 0, sizeof(*fw_ddb_entry));
7650         wtime = jiffies + (HZ * LOGOUT_TOV);
7651         do {
7652                 ret = qla4xxx_get_fwddb_entry(ha, ddb_entry->fw_ddb_index,
7653                                               fw_ddb_entry, fw_ddb_entry_dma,
7654                                               NULL, NULL, &ddb_state, NULL,
7655                                               NULL, NULL);
7656                 if (ret == QLA_ERROR)
7657                         goto ddb_logout_clr_sess;
7658
7659                 if ((ddb_state == DDB_DS_NO_CONNECTION_ACTIVE) ||
7660                     (ddb_state == DDB_DS_SESSION_FAILED))
7661                         goto ddb_logout_clr_sess;
7662
7663                 schedule_timeout_uninterruptible(HZ);
7664         } while ((time_after(wtime, jiffies)));
7665
7666 ddb_logout_clr_sess:
7667         qla4xxx_clear_ddb_entry(ha, ddb_entry->fw_ddb_index);
7668         /*
7669          * we have decremented the reference count of the driver
7670          * when we setup the session to have the driver unload
7671          * to be seamless without actually destroying the
7672          * session
7673          **/
7674         try_module_get(qla4xxx_iscsi_transport.owner);
7675         iscsi_destroy_endpoint(ddb_entry->conn->ep);
7676
7677         spin_lock_irqsave(&ha->hardware_lock, flags);
7678         qla4xxx_free_ddb(ha, ddb_entry);
7679         clear_bit(ddb_entry->fw_ddb_index, ha->ddb_idx_map);
7680         spin_unlock_irqrestore(&ha->hardware_lock, flags);
7681
7682         iscsi_session_teardown(ddb_entry->sess);
7683
7684         clear_bit(DF_DISABLE_RELOGIN, &ddb_entry->flags);
7685         ret = QLA_SUCCESS;
7686
7687 exit_ddb_logout:
7688         if (fw_ddb_entry)
7689                 dma_free_coherent(&ha->pdev->dev, sizeof(*fw_ddb_entry),
7690                                   fw_ddb_entry, fw_ddb_entry_dma);
7691         return ret;
7692 }
7693
7694 /**
7695  * qla4xxx_sysfs_ddb_logout - Logout from the specified target
7696  * @fnode_sess: pointer to session attrs of flash ddb entry
7697  * @fnode_conn: pointer to connection attrs of flash ddb entry
7698  *
7699  * This performs log out from the specified target
7700  **/
7701 static int qla4xxx_sysfs_ddb_logout(struct iscsi_bus_flash_session *fnode_sess,
7702                                     struct iscsi_bus_flash_conn *fnode_conn)
7703 {
7704         struct Scsi_Host *shost = iscsi_flash_session_to_shost(fnode_sess);
7705         struct scsi_qla_host *ha = to_qla_host(shost);
7706         struct ql4_tuple_ddb *flash_tddb = NULL;
7707         struct ql4_tuple_ddb *tmp_tddb = NULL;
7708         struct dev_db_entry *fw_ddb_entry = NULL;
7709         struct ddb_entry *ddb_entry = NULL;
7710         dma_addr_t fw_ddb_dma;
7711         uint32_t next_idx = 0;
7712         uint32_t state = 0, conn_err = 0;
7713         uint16_t conn_id = 0;
7714         int idx, index;
7715         int status, ret = 0;
7716
7717         fw_ddb_entry = dma_pool_alloc(ha->fw_ddb_dma_pool, GFP_KERNEL,
7718                                       &fw_ddb_dma);
7719         if (fw_ddb_entry == NULL) {
7720                 ql4_printk(KERN_ERR, ha, "%s:Out of memory\n", __func__);
7721                 ret = -ENOMEM;
7722                 goto exit_ddb_logout;
7723         }
7724
7725         flash_tddb = vzalloc(sizeof(*flash_tddb));
7726         if (!flash_tddb) {
7727                 ql4_printk(KERN_WARNING, ha,
7728                            "%s:Memory Allocation failed.\n", __func__);
7729                 ret = -ENOMEM;
7730                 goto exit_ddb_logout;
7731         }
7732
7733         tmp_tddb = vzalloc(sizeof(*tmp_tddb));
7734         if (!tmp_tddb) {
7735                 ql4_printk(KERN_WARNING, ha,
7736                            "%s:Memory Allocation failed.\n", __func__);
7737                 ret = -ENOMEM;
7738                 goto exit_ddb_logout;
7739         }
7740
7741         if (!fnode_sess->targetname) {
7742                 ql4_printk(KERN_ERR, ha,
7743                            "%s:Cannot logout from SendTarget entry\n",
7744                            __func__);
7745                 ret = -EPERM;
7746                 goto exit_ddb_logout;
7747         }
7748
7749         if (fnode_sess->is_boot_target) {
7750                 ql4_printk(KERN_ERR, ha,
7751                            "%s: Logout from boot target entry is not permitted.\n",
7752                            __func__);
7753                 ret = -EPERM;
7754                 goto exit_ddb_logout;
7755         }
7756
7757         strlcpy(flash_tddb->iscsi_name, fnode_sess->targetname,
7758                 ISCSI_NAME_SIZE);
7759
7760         if (!strncmp(fnode_sess->portal_type, PORTAL_TYPE_IPV6, 4))
7761                 sprintf(flash_tddb->ip_addr, "%pI6", fnode_conn->ipaddress);
7762         else
7763                 sprintf(flash_tddb->ip_addr, "%pI4", fnode_conn->ipaddress);
7764
7765         flash_tddb->tpgt = fnode_sess->tpgt;
7766         flash_tddb->port = fnode_conn->port;
7767
7768         COPY_ISID(flash_tddb->isid, fnode_sess->isid);
7769
7770         for (idx = 0; idx < MAX_DDB_ENTRIES; idx++) {
7771                 ddb_entry = qla4xxx_lookup_ddb_by_fw_index(ha, idx);
7772                 if (ddb_entry == NULL)
7773                         continue;
7774
7775                 if (ddb_entry->ddb_type != FLASH_DDB)
7776                         continue;
7777
7778                 index = ddb_entry->sess->target_id;
7779                 status = qla4xxx_get_fwddb_entry(ha, index, fw_ddb_entry,
7780                                                  fw_ddb_dma, NULL, &next_idx,
7781                                                  &state, &conn_err, NULL,
7782                                                  &conn_id);
7783                 if (status == QLA_ERROR) {
7784                         ret = -ENOMEM;
7785                         break;
7786                 }
7787
7788                 qla4xxx_convert_param_ddb(fw_ddb_entry, tmp_tddb, NULL);
7789
7790                 status = qla4xxx_compare_tuple_ddb(ha, flash_tddb, tmp_tddb,
7791                                                    true);
7792                 if (status == QLA_SUCCESS) {
7793                         ret = qla4xxx_sysfs_ddb_logout_sid(ddb_entry->sess);
7794                         break;
7795                 }
7796         }
7797
7798         if (idx == MAX_DDB_ENTRIES)
7799                 ret = -ESRCH;
7800
7801 exit_ddb_logout:
7802         if (flash_tddb)
7803                 vfree(flash_tddb);
7804         if (tmp_tddb)
7805                 vfree(tmp_tddb);
7806         if (fw_ddb_entry)
7807                 dma_pool_free(ha->fw_ddb_dma_pool, fw_ddb_entry, fw_ddb_dma);
7808
7809         return ret;
7810 }
7811
7812 static int
7813 qla4xxx_sysfs_ddb_get_param(struct iscsi_bus_flash_session *fnode_sess,
7814                             int param, char *buf)
7815 {
7816         struct Scsi_Host *shost = iscsi_flash_session_to_shost(fnode_sess);
7817         struct scsi_qla_host *ha = to_qla_host(shost);
7818         struct iscsi_bus_flash_conn *fnode_conn;
7819         struct ql4_chap_table chap_tbl;
7820         struct device *dev;
7821         int parent_type;
7822         int rc = 0;
7823
7824         dev = iscsi_find_flashnode_conn(fnode_sess);
7825         if (!dev)
7826                 return -EIO;
7827
7828         fnode_conn = iscsi_dev_to_flash_conn(dev);
7829
7830         switch (param) {
7831         case ISCSI_FLASHNODE_IS_FW_ASSIGNED_IPV6:
7832                 rc = sprintf(buf, "%u\n", fnode_conn->is_fw_assigned_ipv6);
7833                 break;
7834         case ISCSI_FLASHNODE_PORTAL_TYPE:
7835                 rc = sprintf(buf, "%s\n", fnode_sess->portal_type);
7836                 break;
7837         case ISCSI_FLASHNODE_AUTO_SND_TGT_DISABLE:
7838                 rc = sprintf(buf, "%u\n", fnode_sess->auto_snd_tgt_disable);
7839                 break;
7840         case ISCSI_FLASHNODE_DISCOVERY_SESS:
7841                 rc = sprintf(buf, "%u\n", fnode_sess->discovery_sess);
7842                 break;
7843         case ISCSI_FLASHNODE_ENTRY_EN:
7844                 rc = sprintf(buf, "%u\n", fnode_sess->entry_state);
7845                 break;
7846         case ISCSI_FLASHNODE_HDR_DGST_EN:
7847                 rc = sprintf(buf, "%u\n", fnode_conn->hdrdgst_en);
7848                 break;
7849         case ISCSI_FLASHNODE_DATA_DGST_EN:
7850                 rc = sprintf(buf, "%u\n", fnode_conn->datadgst_en);
7851                 break;
7852         case ISCSI_FLASHNODE_IMM_DATA_EN:
7853                 rc = sprintf(buf, "%u\n", fnode_sess->imm_data_en);
7854                 break;
7855         case ISCSI_FLASHNODE_INITIAL_R2T_EN:
7856                 rc = sprintf(buf, "%u\n", fnode_sess->initial_r2t_en);
7857                 break;
7858         case ISCSI_FLASHNODE_DATASEQ_INORDER:
7859                 rc = sprintf(buf, "%u\n", fnode_sess->dataseq_inorder_en);
7860                 break;
7861         case ISCSI_FLASHNODE_PDU_INORDER:
7862                 rc = sprintf(buf, "%u\n", fnode_sess->pdu_inorder_en);
7863                 break;
7864         case ISCSI_FLASHNODE_CHAP_AUTH_EN:
7865                 rc = sprintf(buf, "%u\n", fnode_sess->chap_auth_en);
7866                 break;
7867         case ISCSI_FLASHNODE_SNACK_REQ_EN:
7868                 rc = sprintf(buf, "%u\n", fnode_conn->snack_req_en);
7869                 break;
7870         case ISCSI_FLASHNODE_DISCOVERY_LOGOUT_EN:
7871                 rc = sprintf(buf, "%u\n", fnode_sess->discovery_logout_en);
7872                 break;
7873         case ISCSI_FLASHNODE_BIDI_CHAP_EN:
7874                 rc = sprintf(buf, "%u\n", fnode_sess->bidi_chap_en);
7875                 break;
7876         case ISCSI_FLASHNODE_DISCOVERY_AUTH_OPTIONAL:
7877                 rc = sprintf(buf, "%u\n", fnode_sess->discovery_auth_optional);
7878                 break;
7879         case ISCSI_FLASHNODE_ERL:
7880                 rc = sprintf(buf, "%u\n", fnode_sess->erl);
7881                 break;
7882         case ISCSI_FLASHNODE_TCP_TIMESTAMP_STAT:
7883                 rc = sprintf(buf, "%u\n", fnode_conn->tcp_timestamp_stat);
7884                 break;
7885         case ISCSI_FLASHNODE_TCP_NAGLE_DISABLE:
7886                 rc = sprintf(buf, "%u\n", fnode_conn->tcp_nagle_disable);
7887                 break;
7888         case ISCSI_FLASHNODE_TCP_WSF_DISABLE:
7889                 rc = sprintf(buf, "%u\n", fnode_conn->tcp_wsf_disable);
7890                 break;
7891         case ISCSI_FLASHNODE_TCP_TIMER_SCALE:
7892                 rc = sprintf(buf, "%u\n", fnode_conn->tcp_timer_scale);
7893                 break;
7894         case ISCSI_FLASHNODE_TCP_TIMESTAMP_EN:
7895                 rc = sprintf(buf, "%u\n", fnode_conn->tcp_timestamp_en);
7896                 break;
7897         case ISCSI_FLASHNODE_IP_FRAG_DISABLE:
7898                 rc = sprintf(buf, "%u\n", fnode_conn->fragment_disable);
7899                 break;
7900         case ISCSI_FLASHNODE_MAX_RECV_DLENGTH:
7901                 rc = sprintf(buf, "%u\n", fnode_conn->max_recv_dlength);
7902                 break;
7903         case ISCSI_FLASHNODE_MAX_XMIT_DLENGTH:
7904                 rc = sprintf(buf, "%u\n", fnode_conn->max_xmit_dlength);
7905                 break;
7906         case ISCSI_FLASHNODE_FIRST_BURST:
7907                 rc = sprintf(buf, "%u\n", fnode_sess->first_burst);
7908                 break;
7909         case ISCSI_FLASHNODE_DEF_TIME2WAIT:
7910                 rc = sprintf(buf, "%u\n", fnode_sess->time2wait);
7911                 break;
7912         case ISCSI_FLASHNODE_DEF_TIME2RETAIN:
7913                 rc = sprintf(buf, "%u\n", fnode_sess->time2retain);
7914                 break;
7915         case ISCSI_FLASHNODE_MAX_R2T:
7916                 rc = sprintf(buf, "%u\n", fnode_sess->max_r2t);
7917                 break;
7918         case ISCSI_FLASHNODE_KEEPALIVE_TMO:
7919                 rc = sprintf(buf, "%u\n", fnode_conn->keepalive_timeout);
7920                 break;
7921         case ISCSI_FLASHNODE_ISID:
7922                 rc = sprintf(buf, "%pm\n", fnode_sess->isid);
7923                 break;
7924         case ISCSI_FLASHNODE_TSID:
7925                 rc = sprintf(buf, "%u\n", fnode_sess->tsid);
7926                 break;
7927         case ISCSI_FLASHNODE_PORT:
7928                 rc = sprintf(buf, "%d\n", fnode_conn->port);
7929                 break;
7930         case ISCSI_FLASHNODE_MAX_BURST:
7931                 rc = sprintf(buf, "%u\n", fnode_sess->max_burst);
7932                 break;
7933         case ISCSI_FLASHNODE_DEF_TASKMGMT_TMO:
7934                 rc = sprintf(buf, "%u\n",
7935                              fnode_sess->default_taskmgmt_timeout);
7936                 break;
7937         case ISCSI_FLASHNODE_IPADDR:
7938                 if (!strncmp(fnode_sess->portal_type, PORTAL_TYPE_IPV6, 4))
7939                         rc = sprintf(buf, "%pI6\n", fnode_conn->ipaddress);
7940                 else
7941                         rc = sprintf(buf, "%pI4\n", fnode_conn->ipaddress);
7942                 break;
7943         case ISCSI_FLASHNODE_ALIAS:
7944                 if (fnode_sess->targetalias)
7945                         rc = sprintf(buf, "%s\n", fnode_sess->targetalias);
7946                 else
7947                         rc = sprintf(buf, "\n");
7948                 break;
7949         case ISCSI_FLASHNODE_REDIRECT_IPADDR:
7950                 if (!strncmp(fnode_sess->portal_type, PORTAL_TYPE_IPV6, 4))
7951                         rc = sprintf(buf, "%pI6\n",
7952                                      fnode_conn->redirect_ipaddr);
7953                 else
7954                         rc = sprintf(buf, "%pI4\n",
7955                                      fnode_conn->redirect_ipaddr);
7956                 break;
7957         case ISCSI_FLASHNODE_MAX_SEGMENT_SIZE:
7958                 rc = sprintf(buf, "%u\n", fnode_conn->max_segment_size);
7959                 break;
7960         case ISCSI_FLASHNODE_LOCAL_PORT:
7961                 rc = sprintf(buf, "%u\n", fnode_conn->local_port);
7962                 break;
7963         case ISCSI_FLASHNODE_IPV4_TOS:
7964                 rc = sprintf(buf, "%u\n", fnode_conn->ipv4_tos);
7965                 break;
7966         case ISCSI_FLASHNODE_IPV6_TC:
7967                 if (!strncmp(fnode_sess->portal_type, PORTAL_TYPE_IPV6, 4))
7968                         rc = sprintf(buf, "%u\n",
7969                                      fnode_conn->ipv6_traffic_class);
7970                 else
7971                         rc = sprintf(buf, "\n");
7972                 break;
7973         case ISCSI_FLASHNODE_IPV6_FLOW_LABEL:
7974                 rc = sprintf(buf, "%u\n", fnode_conn->ipv6_flow_label);
7975                 break;
7976         case ISCSI_FLASHNODE_LINK_LOCAL_IPV6:
7977                 if (!strncmp(fnode_sess->portal_type, PORTAL_TYPE_IPV6, 4))
7978                         rc = sprintf(buf, "%pI6\n",
7979                                      fnode_conn->link_local_ipv6_addr);
7980                 else
7981                         rc = sprintf(buf, "\n");
7982                 break;
7983         case ISCSI_FLASHNODE_DISCOVERY_PARENT_IDX:
7984                 rc = sprintf(buf, "%u\n", fnode_sess->discovery_parent_idx);
7985                 break;
7986         case ISCSI_FLASHNODE_DISCOVERY_PARENT_TYPE:
7987                 if (fnode_sess->discovery_parent_type == DDB_ISNS)
7988                         parent_type = ISCSI_DISC_PARENT_ISNS;
7989                 else if (fnode_sess->discovery_parent_type == DDB_NO_LINK)
7990                         parent_type = ISCSI_DISC_PARENT_UNKNOWN;
7991                 else if (fnode_sess->discovery_parent_type < MAX_DDB_ENTRIES)
7992                         parent_type = ISCSI_DISC_PARENT_SENDTGT;
7993                 else
7994                         parent_type = ISCSI_DISC_PARENT_UNKNOWN;
7995
7996                 rc = sprintf(buf, "%s\n",
7997                              iscsi_get_discovery_parent_name(parent_type));
7998                 break;
7999         case ISCSI_FLASHNODE_NAME:
8000                 if (fnode_sess->targetname)
8001                         rc = sprintf(buf, "%s\n", fnode_sess->targetname);
8002                 else
8003                         rc = sprintf(buf, "\n");
8004                 break;
8005         case ISCSI_FLASHNODE_TPGT:
8006                 rc = sprintf(buf, "%u\n", fnode_sess->tpgt);
8007                 break;
8008         case ISCSI_FLASHNODE_TCP_XMIT_WSF:
8009                 rc = sprintf(buf, "%u\n", fnode_conn->tcp_xmit_wsf);
8010                 break;
8011         case ISCSI_FLASHNODE_TCP_RECV_WSF:
8012                 rc = sprintf(buf, "%u\n", fnode_conn->tcp_recv_wsf);
8013                 break;
8014         case ISCSI_FLASHNODE_CHAP_OUT_IDX:
8015                 rc = sprintf(buf, "%u\n", fnode_sess->chap_out_idx);
8016                 break;
8017         case ISCSI_FLASHNODE_USERNAME:
8018                 if (fnode_sess->chap_auth_en) {
8019                         qla4xxx_get_uni_chap_at_index(ha,
8020                                                       chap_tbl.name,
8021                                                       chap_tbl.secret,
8022                                                       fnode_sess->chap_out_idx);
8023                         rc = sprintf(buf, "%s\n", chap_tbl.name);
8024                 } else {
8025                         rc = sprintf(buf, "\n");
8026                 }
8027                 break;
8028         case ISCSI_FLASHNODE_PASSWORD:
8029                 if (fnode_sess->chap_auth_en) {
8030                         qla4xxx_get_uni_chap_at_index(ha,
8031                                                       chap_tbl.name,
8032                                                       chap_tbl.secret,
8033                                                       fnode_sess->chap_out_idx);
8034                         rc = sprintf(buf, "%s\n", chap_tbl.secret);
8035                 } else {
8036                         rc = sprintf(buf, "\n");
8037                 }
8038                 break;
8039         case ISCSI_FLASHNODE_STATSN:
8040                 rc = sprintf(buf, "%u\n", fnode_conn->statsn);
8041                 break;
8042         case ISCSI_FLASHNODE_EXP_STATSN:
8043                 rc = sprintf(buf, "%u\n", fnode_conn->exp_statsn);
8044                 break;
8045         case ISCSI_FLASHNODE_IS_BOOT_TGT:
8046                 rc = sprintf(buf, "%u\n", fnode_sess->is_boot_target);
8047                 break;
8048         default:
8049                 rc = -ENOSYS;
8050                 break;
8051         }
8052
8053         put_device(dev);
8054         return rc;
8055 }
8056
8057 /**
8058  * qla4xxx_sysfs_ddb_set_param - Set parameter for firmware DDB entry
8059  * @fnode_sess: pointer to session attrs of flash ddb entry
8060  * @fnode_conn: pointer to connection attrs of flash ddb entry
8061  * @data: Parameters and their values to update
8062  * @len: len of data
8063  *
8064  * This sets the parameter of flash ddb entry and writes them to flash
8065  **/
8066 static int
8067 qla4xxx_sysfs_ddb_set_param(struct iscsi_bus_flash_session *fnode_sess,
8068                             struct iscsi_bus_flash_conn *fnode_conn,
8069                             void *data, int len)
8070 {
8071         struct Scsi_Host *shost = iscsi_flash_session_to_shost(fnode_sess);
8072         struct scsi_qla_host *ha = to_qla_host(shost);
8073         struct iscsi_flashnode_param_info *fnode_param;
8074         struct ql4_chap_table chap_tbl;
8075         struct nlattr *attr;
8076         uint16_t chap_out_idx = INVALID_ENTRY;
8077         int rc = QLA_ERROR;
8078         uint32_t rem = len;
8079
8080         memset((void *)&chap_tbl, 0, sizeof(chap_tbl));
8081         nla_for_each_attr(attr, data, len, rem) {
8082                 fnode_param = nla_data(attr);
8083
8084                 switch (fnode_param->param) {
8085                 case ISCSI_FLASHNODE_IS_FW_ASSIGNED_IPV6:
8086                         fnode_conn->is_fw_assigned_ipv6 = fnode_param->value[0];
8087                         break;
8088                 case ISCSI_FLASHNODE_PORTAL_TYPE:
8089                         memcpy(fnode_sess->portal_type, fnode_param->value,
8090                                strlen(fnode_sess->portal_type));
8091                         break;
8092                 case ISCSI_FLASHNODE_AUTO_SND_TGT_DISABLE:
8093                         fnode_sess->auto_snd_tgt_disable =
8094                                                         fnode_param->value[0];
8095                         break;
8096                 case ISCSI_FLASHNODE_DISCOVERY_SESS:
8097                         fnode_sess->discovery_sess = fnode_param->value[0];
8098                         break;
8099                 case ISCSI_FLASHNODE_ENTRY_EN:
8100                         fnode_sess->entry_state = fnode_param->value[0];
8101                         break;
8102                 case ISCSI_FLASHNODE_HDR_DGST_EN:
8103                         fnode_conn->hdrdgst_en = fnode_param->value[0];
8104                         break;
8105                 case ISCSI_FLASHNODE_DATA_DGST_EN:
8106                         fnode_conn->datadgst_en = fnode_param->value[0];
8107                         break;
8108                 case ISCSI_FLASHNODE_IMM_DATA_EN:
8109                         fnode_sess->imm_data_en = fnode_param->value[0];
8110                         break;
8111                 case ISCSI_FLASHNODE_INITIAL_R2T_EN:
8112                         fnode_sess->initial_r2t_en = fnode_param->value[0];
8113                         break;
8114                 case ISCSI_FLASHNODE_DATASEQ_INORDER:
8115                         fnode_sess->dataseq_inorder_en = fnode_param->value[0];
8116                         break;
8117                 case ISCSI_FLASHNODE_PDU_INORDER:
8118                         fnode_sess->pdu_inorder_en = fnode_param->value[0];
8119                         break;
8120                 case ISCSI_FLASHNODE_CHAP_AUTH_EN:
8121                         fnode_sess->chap_auth_en = fnode_param->value[0];
8122                         /* Invalidate chap index if chap auth is disabled */
8123                         if (!fnode_sess->chap_auth_en)
8124                                 fnode_sess->chap_out_idx = INVALID_ENTRY;
8125
8126                         break;
8127                 case ISCSI_FLASHNODE_SNACK_REQ_EN:
8128                         fnode_conn->snack_req_en = fnode_param->value[0];
8129                         break;
8130                 case ISCSI_FLASHNODE_DISCOVERY_LOGOUT_EN:
8131                         fnode_sess->discovery_logout_en = fnode_param->value[0];
8132                         break;
8133                 case ISCSI_FLASHNODE_BIDI_CHAP_EN:
8134                         fnode_sess->bidi_chap_en = fnode_param->value[0];
8135                         break;
8136                 case ISCSI_FLASHNODE_DISCOVERY_AUTH_OPTIONAL:
8137                         fnode_sess->discovery_auth_optional =
8138                                                         fnode_param->value[0];
8139                         break;
8140                 case ISCSI_FLASHNODE_ERL:
8141                         fnode_sess->erl = fnode_param->value[0];
8142                         break;
8143                 case ISCSI_FLASHNODE_TCP_TIMESTAMP_STAT:
8144                         fnode_conn->tcp_timestamp_stat = fnode_param->value[0];
8145                         break;
8146                 case ISCSI_FLASHNODE_TCP_NAGLE_DISABLE:
8147                         fnode_conn->tcp_nagle_disable = fnode_param->value[0];
8148                         break;
8149                 case ISCSI_FLASHNODE_TCP_WSF_DISABLE:
8150                         fnode_conn->tcp_wsf_disable = fnode_param->value[0];
8151                         break;
8152                 case ISCSI_FLASHNODE_TCP_TIMER_SCALE:
8153                         fnode_conn->tcp_timer_scale = fnode_param->value[0];
8154                         break;
8155                 case ISCSI_FLASHNODE_TCP_TIMESTAMP_EN:
8156                         fnode_conn->tcp_timestamp_en = fnode_param->value[0];
8157                         break;
8158                 case ISCSI_FLASHNODE_IP_FRAG_DISABLE:
8159                         fnode_conn->fragment_disable = fnode_param->value[0];
8160                         break;
8161                 case ISCSI_FLASHNODE_MAX_RECV_DLENGTH:
8162                         fnode_conn->max_recv_dlength =
8163                                         *(unsigned *)fnode_param->value;
8164                         break;
8165                 case ISCSI_FLASHNODE_MAX_XMIT_DLENGTH:
8166                         fnode_conn->max_xmit_dlength =
8167                                         *(unsigned *)fnode_param->value;
8168                         break;
8169                 case ISCSI_FLASHNODE_FIRST_BURST:
8170                         fnode_sess->first_burst =
8171                                         *(unsigned *)fnode_param->value;
8172                         break;
8173                 case ISCSI_FLASHNODE_DEF_TIME2WAIT:
8174                         fnode_sess->time2wait = *(uint16_t *)fnode_param->value;
8175                         break;
8176                 case ISCSI_FLASHNODE_DEF_TIME2RETAIN:
8177                         fnode_sess->time2retain =
8178                                                 *(uint16_t *)fnode_param->value;
8179                         break;
8180                 case ISCSI_FLASHNODE_MAX_R2T:
8181                         fnode_sess->max_r2t =
8182                                         *(uint16_t *)fnode_param->value;
8183                         break;
8184                 case ISCSI_FLASHNODE_KEEPALIVE_TMO:
8185                         fnode_conn->keepalive_timeout =
8186                                 *(uint16_t *)fnode_param->value;
8187                         break;
8188                 case ISCSI_FLASHNODE_ISID:
8189                         memcpy(fnode_sess->isid, fnode_param->value,
8190                                sizeof(fnode_sess->isid));
8191                         break;
8192                 case ISCSI_FLASHNODE_TSID:
8193                         fnode_sess->tsid = *(uint16_t *)fnode_param->value;
8194                         break;
8195                 case ISCSI_FLASHNODE_PORT:
8196                         fnode_conn->port = *(uint16_t *)fnode_param->value;
8197                         break;
8198                 case ISCSI_FLASHNODE_MAX_BURST:
8199                         fnode_sess->max_burst = *(unsigned *)fnode_param->value;
8200                         break;
8201                 case ISCSI_FLASHNODE_DEF_TASKMGMT_TMO:
8202                         fnode_sess->default_taskmgmt_timeout =
8203                                                 *(uint16_t *)fnode_param->value;
8204                         break;
8205                 case ISCSI_FLASHNODE_IPADDR:
8206                         memcpy(fnode_conn->ipaddress, fnode_param->value,
8207                                IPv6_ADDR_LEN);
8208                         break;
8209                 case ISCSI_FLASHNODE_ALIAS:
8210                         rc = iscsi_switch_str_param(&fnode_sess->targetalias,
8211                                                     (char *)fnode_param->value);
8212                         break;
8213                 case ISCSI_FLASHNODE_REDIRECT_IPADDR:
8214                         memcpy(fnode_conn->redirect_ipaddr, fnode_param->value,
8215                                IPv6_ADDR_LEN);
8216                         break;
8217                 case ISCSI_FLASHNODE_MAX_SEGMENT_SIZE:
8218                         fnode_conn->max_segment_size =
8219                                         *(unsigned *)fnode_param->value;
8220                         break;
8221                 case ISCSI_FLASHNODE_LOCAL_PORT:
8222                         fnode_conn->local_port =
8223                                                 *(uint16_t *)fnode_param->value;
8224                         break;
8225                 case ISCSI_FLASHNODE_IPV4_TOS:
8226                         fnode_conn->ipv4_tos = fnode_param->value[0];
8227                         break;
8228                 case ISCSI_FLASHNODE_IPV6_TC:
8229                         fnode_conn->ipv6_traffic_class = fnode_param->value[0];
8230                         break;
8231                 case ISCSI_FLASHNODE_IPV6_FLOW_LABEL:
8232                         fnode_conn->ipv6_flow_label = fnode_param->value[0];
8233                         break;
8234                 case ISCSI_FLASHNODE_NAME:
8235                         rc = iscsi_switch_str_param(&fnode_sess->targetname,
8236                                                     (char *)fnode_param->value);
8237                         break;
8238                 case ISCSI_FLASHNODE_TPGT:
8239                         fnode_sess->tpgt = *(uint16_t *)fnode_param->value;
8240                         break;
8241                 case ISCSI_FLASHNODE_LINK_LOCAL_IPV6:
8242                         memcpy(fnode_conn->link_local_ipv6_addr,
8243                                fnode_param->value, IPv6_ADDR_LEN);
8244                         break;
8245                 case ISCSI_FLASHNODE_DISCOVERY_PARENT_IDX:
8246                         fnode_sess->discovery_parent_idx =
8247                                                 *(uint16_t *)fnode_param->value;
8248                         break;
8249                 case ISCSI_FLASHNODE_TCP_XMIT_WSF:
8250                         fnode_conn->tcp_xmit_wsf =
8251                                                 *(uint8_t *)fnode_param->value;
8252                         break;
8253                 case ISCSI_FLASHNODE_TCP_RECV_WSF:
8254                         fnode_conn->tcp_recv_wsf =
8255                                                 *(uint8_t *)fnode_param->value;
8256                         break;
8257                 case ISCSI_FLASHNODE_STATSN:
8258                         fnode_conn->statsn = *(uint32_t *)fnode_param->value;
8259                         break;
8260                 case ISCSI_FLASHNODE_EXP_STATSN:
8261                         fnode_conn->exp_statsn =
8262                                                 *(uint32_t *)fnode_param->value;
8263                         break;
8264                 case ISCSI_FLASHNODE_CHAP_OUT_IDX:
8265                         chap_out_idx = *(uint16_t *)fnode_param->value;
8266                         if (!qla4xxx_get_uni_chap_at_index(ha,
8267                                                            chap_tbl.name,
8268                                                            chap_tbl.secret,
8269                                                            chap_out_idx)) {
8270                                 fnode_sess->chap_out_idx = chap_out_idx;
8271                                 /* Enable chap auth if chap index is valid */
8272                                 fnode_sess->chap_auth_en = QL4_PARAM_ENABLE;
8273                         }
8274                         break;
8275                 default:
8276                         ql4_printk(KERN_ERR, ha,
8277                                    "%s: No such sysfs attribute\n", __func__);
8278                         rc = -ENOSYS;
8279                         goto exit_set_param;
8280                 }
8281         }
8282
8283         rc = qla4xxx_sysfs_ddb_apply(fnode_sess, fnode_conn);
8284
8285 exit_set_param:
8286         return rc;
8287 }
8288
8289 /**
8290  * qla4xxx_sysfs_ddb_delete - Delete firmware DDB entry
8291  * @fnode_sess: pointer to session attrs of flash ddb entry
8292  *
8293  * This invalidates the flash ddb entry at the given index
8294  **/
8295 static int qla4xxx_sysfs_ddb_delete(struct iscsi_bus_flash_session *fnode_sess)
8296 {
8297         struct Scsi_Host *shost = iscsi_flash_session_to_shost(fnode_sess);
8298         struct scsi_qla_host *ha = to_qla_host(shost);
8299         uint32_t dev_db_start_offset;
8300         uint32_t dev_db_end_offset;
8301         struct dev_db_entry *fw_ddb_entry = NULL;
8302         dma_addr_t fw_ddb_entry_dma;
8303         uint16_t *ddb_cookie = NULL;
8304         size_t ddb_size = 0;
8305         void *pddb = NULL;
8306         int target_id;
8307         int rc = 0;
8308
8309         if (fnode_sess->is_boot_target) {
8310                 rc = -EPERM;
8311                 DEBUG2(ql4_printk(KERN_ERR, ha,
8312                                   "%s: Deletion of boot target entry is not permitted.\n",
8313                                   __func__));
8314                 goto exit_ddb_del;
8315         }
8316
8317         if (fnode_sess->flash_state == DEV_DB_NON_PERSISTENT)
8318                 goto sysfs_ddb_del;
8319
8320         if (is_qla40XX(ha)) {
8321                 dev_db_start_offset = FLASH_OFFSET_DB_INFO;
8322                 dev_db_end_offset = FLASH_OFFSET_DB_END;
8323                 dev_db_start_offset += (fnode_sess->target_id *
8324                                        sizeof(*fw_ddb_entry));
8325                 ddb_size = sizeof(*fw_ddb_entry);
8326         } else {
8327                 dev_db_start_offset = FLASH_RAW_ACCESS_ADDR +
8328                                       (ha->hw.flt_region_ddb << 2);
8329                 /* flt_ddb_size is DDB table size for both ports
8330                  * so divide it by 2 to calculate the offset for second port
8331                  */
8332                 if (ha->port_num == 1)
8333                         dev_db_start_offset += (ha->hw.flt_ddb_size / 2);
8334
8335                 dev_db_end_offset = dev_db_start_offset +
8336                                     (ha->hw.flt_ddb_size / 2);
8337
8338                 dev_db_start_offset += (fnode_sess->target_id *
8339                                        sizeof(*fw_ddb_entry));
8340                 dev_db_start_offset += offsetof(struct dev_db_entry, cookie);
8341
8342                 ddb_size = sizeof(*ddb_cookie);
8343         }
8344
8345         DEBUG2(ql4_printk(KERN_ERR, ha, "%s: start offset=%u, end offset=%u\n",
8346                           __func__, dev_db_start_offset, dev_db_end_offset));
8347
8348         if (dev_db_start_offset > dev_db_end_offset) {
8349                 rc = -EIO;
8350                 DEBUG2(ql4_printk(KERN_ERR, ha, "%s:Invalid DDB index %u\n",
8351                                   __func__, fnode_sess->target_id));
8352                 goto exit_ddb_del;
8353         }
8354
8355         pddb = dma_alloc_coherent(&ha->pdev->dev, ddb_size,
8356                                   &fw_ddb_entry_dma, GFP_KERNEL);
8357         if (!pddb) {
8358                 rc = -ENOMEM;
8359                 DEBUG2(ql4_printk(KERN_ERR, ha,
8360                                   "%s: Unable to allocate dma buffer\n",
8361                                   __func__));
8362                 goto exit_ddb_del;
8363         }
8364
8365         if (is_qla40XX(ha)) {
8366                 fw_ddb_entry = pddb;
8367                 memset(fw_ddb_entry, 0, ddb_size);
8368                 ddb_cookie = &fw_ddb_entry->cookie;
8369         } else {
8370                 ddb_cookie = pddb;
8371         }
8372
8373         /* invalidate the cookie */
8374         *ddb_cookie = 0xFFEE;
8375         qla4xxx_set_flash(ha, fw_ddb_entry_dma, dev_db_start_offset,
8376                           ddb_size, FLASH_OPT_RMW_COMMIT);
8377
8378 sysfs_ddb_del:
8379         target_id = fnode_sess->target_id;
8380         iscsi_destroy_flashnode_sess(fnode_sess);
8381         ql4_printk(KERN_INFO, ha,
8382                    "%s: session and conn entries for flashnode %u of host %lu deleted\n",
8383                    __func__, target_id, ha->host_no);
8384 exit_ddb_del:
8385         if (pddb)
8386                 dma_free_coherent(&ha->pdev->dev, ddb_size, pddb,
8387                                   fw_ddb_entry_dma);
8388         return rc;
8389 }
8390
8391 /**
8392  * qla4xxx_sysfs_ddb_export - Create sysfs entries for firmware DDBs
8393  * @ha: pointer to adapter structure
8394  *
8395  * Export the firmware DDB for all send targets and normal targets to sysfs.
8396  **/
8397 int qla4xxx_sysfs_ddb_export(struct scsi_qla_host *ha)
8398 {
8399         struct dev_db_entry *fw_ddb_entry = NULL;
8400         dma_addr_t fw_ddb_entry_dma;
8401         uint16_t max_ddbs;
8402         uint16_t idx = 0;
8403         int ret = QLA_SUCCESS;
8404
8405         fw_ddb_entry = dma_alloc_coherent(&ha->pdev->dev,
8406                                           sizeof(*fw_ddb_entry),
8407                                           &fw_ddb_entry_dma, GFP_KERNEL);
8408         if (!fw_ddb_entry) {
8409                 DEBUG2(ql4_printk(KERN_ERR, ha,
8410                                   "%s: Unable to allocate dma buffer\n",
8411                                   __func__));
8412                 return -ENOMEM;
8413         }
8414
8415         max_ddbs =  is_qla40XX(ha) ? MAX_PRST_DEV_DB_ENTRIES :
8416                                      MAX_DEV_DB_ENTRIES;
8417
8418         for (idx = 0; idx < max_ddbs; idx++) {
8419                 if (qla4xxx_flashdb_by_index(ha, fw_ddb_entry, fw_ddb_entry_dma,
8420                                              idx))
8421                         continue;
8422
8423                 ret = qla4xxx_sysfs_ddb_tgt_create(ha, fw_ddb_entry, &idx, 0);
8424                 if (ret) {
8425                         ret = -EIO;
8426                         break;
8427                 }
8428         }
8429
8430         dma_free_coherent(&ha->pdev->dev, sizeof(*fw_ddb_entry), fw_ddb_entry,
8431                           fw_ddb_entry_dma);
8432
8433         return ret;
8434 }
8435
8436 static void qla4xxx_sysfs_ddb_remove(struct scsi_qla_host *ha)
8437 {
8438         iscsi_destroy_all_flashnode(ha->host);
8439 }
8440
8441 /**
8442  * qla4xxx_build_ddb_list - Build ddb list and setup sessions
8443  * @ha: pointer to adapter structure
8444  * @is_reset: Is this init path or reset path
8445  *
8446  * Create a list of sendtargets (st) from firmware DDBs, issue send targets
8447  * using connection open, then create the list of normal targets (nt)
8448  * from firmware DDBs. Based on the list of nt setup session and connection
8449  * objects.
8450  **/
8451 void qla4xxx_build_ddb_list(struct scsi_qla_host *ha, int is_reset)
8452 {
8453         uint16_t tmo = 0;
8454         struct list_head list_st, list_nt;
8455         struct qla_ddb_index  *st_ddb_idx, *st_ddb_idx_tmp;
8456         unsigned long wtime;
8457
8458         if (!test_bit(AF_LINK_UP, &ha->flags)) {
8459                 set_bit(AF_BUILD_DDB_LIST, &ha->flags);
8460                 ha->is_reset = is_reset;
8461                 return;
8462         }
8463
8464         INIT_LIST_HEAD(&list_st);
8465         INIT_LIST_HEAD(&list_nt);
8466
8467         qla4xxx_build_st_list(ha, &list_st);
8468
8469         /* Before issuing conn open mbox, ensure all IPs states are configured
8470          * Note, conn open fails if IPs are not configured
8471          */
8472         qla4xxx_wait_for_ip_configuration(ha);
8473
8474         /* Go thru the STs and fire the sendtargets by issuing conn open mbx */
8475         list_for_each_entry_safe(st_ddb_idx, st_ddb_idx_tmp, &list_st, list) {
8476                 qla4xxx_conn_open(ha, st_ddb_idx->fw_ddb_idx);
8477         }
8478
8479         /* Wait to ensure all sendtargets are done for min 12 sec wait */
8480         tmo = ((ha->def_timeout > LOGIN_TOV) &&
8481                (ha->def_timeout < LOGIN_TOV * 10) ?
8482                ha->def_timeout : LOGIN_TOV);
8483
8484         DEBUG2(ql4_printk(KERN_INFO, ha,
8485                           "Default time to wait for build ddb %d\n", tmo));
8486
8487         wtime = jiffies + (HZ * tmo);
8488         do {
8489                 if (list_empty(&list_st))
8490                         break;
8491
8492                 qla4xxx_remove_failed_ddb(ha, &list_st);
8493                 schedule_timeout_uninterruptible(HZ / 10);
8494         } while (time_after(wtime, jiffies));
8495
8496
8497         qla4xxx_build_nt_list(ha, &list_nt, &list_st, is_reset);
8498
8499         qla4xxx_free_ddb_list(&list_st);
8500         qla4xxx_free_ddb_list(&list_nt);
8501
8502         qla4xxx_free_ddb_index(ha);
8503 }
8504
8505 /**
8506  * qla4xxx_wait_login_resp_boot_tgt -  Wait for iSCSI boot target login
8507  * response.
8508  * @ha: pointer to adapter structure
8509  *
8510  * When the boot entry is normal iSCSI target then DF_BOOT_TGT flag will be
8511  * set in DDB and we will wait for login response of boot targets during
8512  * probe.
8513  **/
8514 static void qla4xxx_wait_login_resp_boot_tgt(struct scsi_qla_host *ha)
8515 {
8516         struct ddb_entry *ddb_entry;
8517         struct dev_db_entry *fw_ddb_entry = NULL;
8518         dma_addr_t fw_ddb_entry_dma;
8519         unsigned long wtime;
8520         uint32_t ddb_state;
8521         int max_ddbs, idx, ret;
8522
8523         max_ddbs =  is_qla40XX(ha) ? MAX_DEV_DB_ENTRIES_40XX :
8524                                      MAX_DEV_DB_ENTRIES;
8525
8526         fw_ddb_entry = dma_alloc_coherent(&ha->pdev->dev, sizeof(*fw_ddb_entry),
8527                                           &fw_ddb_entry_dma, GFP_KERNEL);
8528         if (!fw_ddb_entry) {
8529                 ql4_printk(KERN_ERR, ha,
8530                            "%s: Unable to allocate dma buffer\n", __func__);
8531                 goto exit_login_resp;
8532         }
8533
8534         wtime = jiffies + (HZ * BOOT_LOGIN_RESP_TOV);
8535
8536         for (idx = 0; idx < max_ddbs; idx++) {
8537                 ddb_entry = qla4xxx_lookup_ddb_by_fw_index(ha, idx);
8538                 if (ddb_entry == NULL)
8539                         continue;
8540
8541                 if (test_bit(DF_BOOT_TGT, &ddb_entry->flags)) {
8542                         DEBUG2(ql4_printk(KERN_INFO, ha,
8543                                           "%s: DDB index [%d]\n", __func__,
8544                                           ddb_entry->fw_ddb_index));
8545                         do {
8546                                 ret = qla4xxx_get_fwddb_entry(ha,
8547                                                 ddb_entry->fw_ddb_index,
8548                                                 fw_ddb_entry, fw_ddb_entry_dma,
8549                                                 NULL, NULL, &ddb_state, NULL,
8550                                                 NULL, NULL);
8551                                 if (ret == QLA_ERROR)
8552                                         goto exit_login_resp;
8553
8554                                 if ((ddb_state == DDB_DS_SESSION_ACTIVE) ||
8555                                     (ddb_state == DDB_DS_SESSION_FAILED))
8556                                         break;
8557
8558                                 schedule_timeout_uninterruptible(HZ);
8559
8560                         } while ((time_after(wtime, jiffies)));
8561
8562                         if (!time_after(wtime, jiffies)) {
8563                                 DEBUG2(ql4_printk(KERN_INFO, ha,
8564                                                   "%s: Login response wait timer expired\n",
8565                                                   __func__));
8566                                  goto exit_login_resp;
8567                         }
8568                 }
8569         }
8570
8571 exit_login_resp:
8572         if (fw_ddb_entry)
8573                 dma_free_coherent(&ha->pdev->dev, sizeof(*fw_ddb_entry),
8574                                   fw_ddb_entry, fw_ddb_entry_dma);
8575 }
8576
8577 /**
8578  * qla4xxx_probe_adapter - callback function to probe HBA
8579  * @pdev: pointer to pci_dev structure
8580  * @pci_device_id: pointer to pci_device entry
8581  *
8582  * This routine will probe for Qlogic 4xxx iSCSI host adapters.
8583  * It returns zero if successful. It also initializes all data necessary for
8584  * the driver.
8585  **/
8586 static int qla4xxx_probe_adapter(struct pci_dev *pdev,
8587                                  const struct pci_device_id *ent)
8588 {
8589         int ret = -ENODEV, status;
8590         struct Scsi_Host *host;
8591         struct scsi_qla_host *ha;
8592         uint8_t init_retry_count = 0;
8593         char buf[34];
8594         struct qla4_8xxx_legacy_intr_set *nx_legacy_intr;
8595         uint32_t dev_state;
8596
8597         if (pci_enable_device(pdev))
8598                 return -1;
8599
8600         host = iscsi_host_alloc(&qla4xxx_driver_template, sizeof(*ha), 0);
8601         if (host == NULL) {
8602                 printk(KERN_WARNING
8603                        "qla4xxx: Couldn't allocate host from scsi layer!\n");
8604                 goto probe_disable_device;
8605         }
8606
8607         /* Clear our data area */
8608         ha = to_qla_host(host);
8609         memset(ha, 0, sizeof(*ha));
8610
8611         /* Save the information from PCI BIOS.  */
8612         ha->pdev = pdev;
8613         ha->host = host;
8614         ha->host_no = host->host_no;
8615         ha->func_num = PCI_FUNC(ha->pdev->devfn);
8616
8617         pci_enable_pcie_error_reporting(pdev);
8618
8619         /* Setup Runtime configurable options */
8620         if (is_qla8022(ha)) {
8621                 ha->isp_ops = &qla4_82xx_isp_ops;
8622                 ha->reg_tbl = (uint32_t *) qla4_82xx_reg_tbl;
8623                 ha->qdr_sn_window = -1;
8624                 ha->ddr_mn_window = -1;
8625                 ha->curr_window = 255;
8626                 nx_legacy_intr = &legacy_intr[ha->func_num];
8627                 ha->nx_legacy_intr.int_vec_bit = nx_legacy_intr->int_vec_bit;
8628                 ha->nx_legacy_intr.tgt_status_reg =
8629                         nx_legacy_intr->tgt_status_reg;
8630                 ha->nx_legacy_intr.tgt_mask_reg = nx_legacy_intr->tgt_mask_reg;
8631                 ha->nx_legacy_intr.pci_int_reg = nx_legacy_intr->pci_int_reg;
8632         } else if (is_qla8032(ha) || is_qla8042(ha)) {
8633                 ha->isp_ops = &qla4_83xx_isp_ops;
8634                 ha->reg_tbl = (uint32_t *)qla4_83xx_reg_tbl;
8635         } else {
8636                 ha->isp_ops = &qla4xxx_isp_ops;
8637         }
8638
8639         if (is_qla80XX(ha)) {
8640                 rwlock_init(&ha->hw_lock);
8641                 ha->pf_bit = ha->func_num << 16;
8642                 /* Set EEH reset type to fundamental if required by hba */
8643                 pdev->needs_freset = 1;
8644         }
8645
8646         /* Configure PCI I/O space. */
8647         ret = ha->isp_ops->iospace_config(ha);
8648         if (ret)
8649                 goto probe_failed_ioconfig;
8650
8651         ql4_printk(KERN_INFO, ha, "Found an ISP%04x, irq %d, iobase 0x%p\n",
8652                    pdev->device, pdev->irq, ha->reg);
8653
8654         qla4xxx_config_dma_addressing(ha);
8655
8656         /* Initialize lists and spinlocks. */
8657         INIT_LIST_HEAD(&ha->free_srb_q);
8658
8659         mutex_init(&ha->mbox_sem);
8660         mutex_init(&ha->chap_sem);
8661         init_completion(&ha->mbx_intr_comp);
8662         init_completion(&ha->disable_acb_comp);
8663         init_completion(&ha->idc_comp);
8664         init_completion(&ha->link_up_comp);
8665
8666         spin_lock_init(&ha->hardware_lock);
8667         spin_lock_init(&ha->work_lock);
8668
8669         /* Initialize work list */
8670         INIT_LIST_HEAD(&ha->work_list);
8671
8672         /* Allocate dma buffers */
8673         if (qla4xxx_mem_alloc(ha)) {
8674                 ql4_printk(KERN_WARNING, ha,
8675                     "[ERROR] Failed to allocate memory for adapter\n");
8676
8677                 ret = -ENOMEM;
8678                 goto probe_failed;
8679         }
8680
8681         host->cmd_per_lun = 3;
8682         host->max_channel = 0;
8683         host->max_lun = MAX_LUNS - 1;
8684         host->max_id = MAX_TARGETS;
8685         host->max_cmd_len = IOCB_MAX_CDB_LEN;
8686         host->can_queue = MAX_SRBS ;
8687         host->transportt = qla4xxx_scsi_transport;
8688
8689         pci_set_drvdata(pdev, ha);
8690
8691         ret = scsi_add_host(host, &pdev->dev);
8692         if (ret)
8693                 goto probe_failed;
8694
8695         if (is_qla80XX(ha))
8696                 qla4_8xxx_get_flash_info(ha);
8697
8698         if (is_qla8032(ha) || is_qla8042(ha)) {
8699                 qla4_83xx_read_reset_template(ha);
8700                 /*
8701                  * NOTE: If ql4dontresethba==1, set IDC_CTRL DONTRESET_BIT0.
8702                  * If DONRESET_BIT0 is set, drivers should not set dev_state
8703                  * to NEED_RESET. But if NEED_RESET is set, drivers should
8704                  * should honor the reset.
8705                  */
8706                 if (ql4xdontresethba == 1)
8707                         qla4_83xx_set_idc_dontreset(ha);
8708         }
8709
8710         /*
8711          * Initialize the Host adapter request/response queues and
8712          * firmware
8713          * NOTE: interrupts enabled upon successful completion
8714          */
8715         status = qla4xxx_initialize_adapter(ha, INIT_ADAPTER);
8716
8717         /* Dont retry adapter initialization if IRQ allocation failed */
8718         if (is_qla80XX(ha) && (status == QLA_ERROR))
8719                 goto skip_retry_init;
8720
8721         while ((!test_bit(AF_ONLINE, &ha->flags)) &&
8722             init_retry_count++ < MAX_INIT_RETRIES) {
8723
8724                 if (is_qla80XX(ha)) {
8725                         ha->isp_ops->idc_lock(ha);
8726                         dev_state = qla4_8xxx_rd_direct(ha,
8727                                                         QLA8XXX_CRB_DEV_STATE);
8728                         ha->isp_ops->idc_unlock(ha);
8729                         if (dev_state == QLA8XXX_DEV_FAILED) {
8730                                 ql4_printk(KERN_WARNING, ha, "%s: don't retry "
8731                                     "initialize adapter. H/W is in failed state\n",
8732                                     __func__);
8733                                 break;
8734                         }
8735                 }
8736                 DEBUG2(printk("scsi: %s: retrying adapter initialization "
8737                               "(%d)\n", __func__, init_retry_count));
8738
8739                 if (ha->isp_ops->reset_chip(ha) == QLA_ERROR)
8740                         continue;
8741
8742                 status = qla4xxx_initialize_adapter(ha, INIT_ADAPTER);
8743                 if (is_qla80XX(ha) && (status == QLA_ERROR)) {
8744                         if (qla4_8xxx_check_init_adapter_retry(ha) == QLA_ERROR)
8745                                 goto skip_retry_init;
8746                 }
8747         }
8748
8749 skip_retry_init:
8750         if (!test_bit(AF_ONLINE, &ha->flags)) {
8751                 ql4_printk(KERN_WARNING, ha, "Failed to initialize adapter\n");
8752
8753                 if ((is_qla8022(ha) && ql4xdontresethba) ||
8754                     ((is_qla8032(ha) || is_qla8042(ha)) &&
8755                      qla4_83xx_idc_dontreset(ha))) {
8756                         /* Put the device in failed state. */
8757                         DEBUG2(printk(KERN_ERR "HW STATE: FAILED\n"));
8758                         ha->isp_ops->idc_lock(ha);
8759                         qla4_8xxx_wr_direct(ha, QLA8XXX_CRB_DEV_STATE,
8760                                             QLA8XXX_DEV_FAILED);
8761                         ha->isp_ops->idc_unlock(ha);
8762                 }
8763                 ret = -ENODEV;
8764                 goto remove_host;
8765         }
8766
8767         /* Startup the kernel thread for this host adapter. */
8768         DEBUG2(printk("scsi: %s: Starting kernel thread for "
8769                       "qla4xxx_dpc\n", __func__));
8770         sprintf(buf, "qla4xxx_%lu_dpc", ha->host_no);
8771         ha->dpc_thread = create_singlethread_workqueue(buf);
8772         if (!ha->dpc_thread) {
8773                 ql4_printk(KERN_WARNING, ha, "Unable to start DPC thread!\n");
8774                 ret = -ENODEV;
8775                 goto remove_host;
8776         }
8777         INIT_WORK(&ha->dpc_work, qla4xxx_do_dpc);
8778
8779         ha->task_wq = alloc_workqueue("qla4xxx_%lu_task", WQ_MEM_RECLAIM, 1,
8780                                       ha->host_no);
8781         if (!ha->task_wq) {
8782                 ql4_printk(KERN_WARNING, ha, "Unable to start task thread!\n");
8783                 ret = -ENODEV;
8784                 goto remove_host;
8785         }
8786
8787         /*
8788          * For ISP-8XXX, request_irqs is called in qla4_8xxx_load_risc
8789          * (which is called indirectly by qla4xxx_initialize_adapter),
8790          * so that irqs will be registered after crbinit but before
8791          * mbx_intr_enable.
8792          */
8793         if (is_qla40XX(ha)) {
8794                 ret = qla4xxx_request_irqs(ha);
8795                 if (ret) {
8796                         ql4_printk(KERN_WARNING, ha, "Failed to reserve "
8797                             "interrupt %d already in use.\n", pdev->irq);
8798                         goto remove_host;
8799                 }
8800         }
8801
8802         pci_save_state(ha->pdev);
8803         ha->isp_ops->enable_intrs(ha);
8804
8805         /* Start timer thread. */
8806         qla4xxx_start_timer(ha, 1);
8807
8808         set_bit(AF_INIT_DONE, &ha->flags);
8809
8810         qla4_8xxx_alloc_sysfs_attr(ha);
8811
8812         printk(KERN_INFO
8813                " QLogic iSCSI HBA Driver version: %s\n"
8814                "  QLogic ISP%04x @ %s, host#=%ld, fw=%02d.%02d.%02d.%02d\n",
8815                qla4xxx_version_str, ha->pdev->device, pci_name(ha->pdev),
8816                ha->host_no, ha->fw_info.fw_major, ha->fw_info.fw_minor,
8817                ha->fw_info.fw_patch, ha->fw_info.fw_build);
8818
8819         /* Set the driver version */
8820         if (is_qla80XX(ha))
8821                 qla4_8xxx_set_param(ha, SET_DRVR_VERSION);
8822
8823         if (qla4xxx_setup_boot_info(ha))
8824                 ql4_printk(KERN_ERR, ha,
8825                            "%s: No iSCSI boot target configured\n", __func__);
8826
8827         set_bit(DPC_SYSFS_DDB_EXPORT, &ha->dpc_flags);
8828         /* Perform the build ddb list and login to each */
8829         qla4xxx_build_ddb_list(ha, INIT_ADAPTER);
8830         iscsi_host_for_each_session(ha->host, qla4xxx_login_flash_ddb);
8831         qla4xxx_wait_login_resp_boot_tgt(ha);
8832
8833         qla4xxx_create_chap_list(ha);
8834
8835         qla4xxx_create_ifaces(ha);
8836         return 0;
8837
8838 remove_host:
8839         scsi_remove_host(ha->host);
8840
8841 probe_failed:
8842         qla4xxx_free_adapter(ha);
8843
8844 probe_failed_ioconfig:
8845         pci_disable_pcie_error_reporting(pdev);
8846         scsi_host_put(ha->host);
8847
8848 probe_disable_device:
8849         pci_disable_device(pdev);
8850
8851         return ret;
8852 }
8853
8854 /**
8855  * qla4xxx_prevent_other_port_reinit - prevent other port from re-initialize
8856  * @ha: pointer to adapter structure
8857  *
8858  * Mark the other ISP-4xxx port to indicate that the driver is being removed,
8859  * so that the other port will not re-initialize while in the process of
8860  * removing the ha due to driver unload or hba hotplug.
8861  **/
8862 static void qla4xxx_prevent_other_port_reinit(struct scsi_qla_host *ha)
8863 {
8864         struct scsi_qla_host *other_ha = NULL;
8865         struct pci_dev *other_pdev = NULL;
8866         int fn = ISP4XXX_PCI_FN_2;
8867
8868         /*iscsi function numbers for ISP4xxx is 1 and 3*/
8869         if (PCI_FUNC(ha->pdev->devfn) & BIT_1)
8870                 fn = ISP4XXX_PCI_FN_1;
8871
8872         other_pdev =
8873                 pci_get_domain_bus_and_slot(pci_domain_nr(ha->pdev->bus),
8874                 ha->pdev->bus->number, PCI_DEVFN(PCI_SLOT(ha->pdev->devfn),
8875                 fn));
8876
8877         /* Get other_ha if other_pdev is valid and state is enable*/
8878         if (other_pdev) {
8879                 if (atomic_read(&other_pdev->enable_cnt)) {
8880                         other_ha = pci_get_drvdata(other_pdev);
8881                         if (other_ha) {
8882                                 set_bit(AF_HA_REMOVAL, &other_ha->flags);
8883                                 DEBUG2(ql4_printk(KERN_INFO, ha, "%s: "
8884                                     "Prevent %s reinit\n", __func__,
8885                                     dev_name(&other_ha->pdev->dev)));
8886                         }
8887                 }
8888                 pci_dev_put(other_pdev);
8889         }
8890 }
8891
8892 static void qla4xxx_destroy_ddb(struct scsi_qla_host *ha,
8893                 struct ddb_entry *ddb_entry)
8894 {
8895         struct dev_db_entry *fw_ddb_entry = NULL;
8896         dma_addr_t fw_ddb_entry_dma;
8897         unsigned long wtime;
8898         uint32_t ddb_state;
8899         int options;
8900         int status;
8901
8902         options = LOGOUT_OPTION_CLOSE_SESSION;
8903         if (qla4xxx_session_logout_ddb(ha, ddb_entry, options) == QLA_ERROR) {
8904                 ql4_printk(KERN_ERR, ha, "%s: Logout failed\n", __func__);
8905                 goto clear_ddb;
8906         }
8907
8908         fw_ddb_entry = dma_alloc_coherent(&ha->pdev->dev, sizeof(*fw_ddb_entry),
8909                                           &fw_ddb_entry_dma, GFP_KERNEL);
8910         if (!fw_ddb_entry) {
8911                 ql4_printk(KERN_ERR, ha,
8912                            "%s: Unable to allocate dma buffer\n", __func__);
8913                 goto clear_ddb;
8914         }
8915
8916         wtime = jiffies + (HZ * LOGOUT_TOV);
8917         do {
8918                 status = qla4xxx_get_fwddb_entry(ha, ddb_entry->fw_ddb_index,
8919                                                  fw_ddb_entry, fw_ddb_entry_dma,
8920                                                  NULL, NULL, &ddb_state, NULL,
8921                                                  NULL, NULL);
8922                 if (status == QLA_ERROR)
8923                         goto free_ddb;
8924
8925                 if ((ddb_state == DDB_DS_NO_CONNECTION_ACTIVE) ||
8926                     (ddb_state == DDB_DS_SESSION_FAILED))
8927                         goto free_ddb;
8928
8929                 schedule_timeout_uninterruptible(HZ);
8930         } while ((time_after(wtime, jiffies)));
8931
8932 free_ddb:
8933         dma_free_coherent(&ha->pdev->dev, sizeof(*fw_ddb_entry),
8934                           fw_ddb_entry, fw_ddb_entry_dma);
8935 clear_ddb:
8936         qla4xxx_clear_ddb_entry(ha, ddb_entry->fw_ddb_index);
8937 }
8938
8939 static void qla4xxx_destroy_fw_ddb_session(struct scsi_qla_host *ha)
8940 {
8941         struct ddb_entry *ddb_entry;
8942         int idx;
8943
8944         for (idx = 0; idx < MAX_DDB_ENTRIES; idx++) {
8945
8946                 ddb_entry = qla4xxx_lookup_ddb_by_fw_index(ha, idx);
8947                 if ((ddb_entry != NULL) &&
8948                     (ddb_entry->ddb_type == FLASH_DDB)) {
8949
8950                         qla4xxx_destroy_ddb(ha, ddb_entry);
8951                         /*
8952                          * we have decremented the reference count of the driver
8953                          * when we setup the session to have the driver unload
8954                          * to be seamless without actually destroying the
8955                          * session
8956                          **/
8957                         try_module_get(qla4xxx_iscsi_transport.owner);
8958                         iscsi_destroy_endpoint(ddb_entry->conn->ep);
8959                         qla4xxx_free_ddb(ha, ddb_entry);
8960                         iscsi_session_teardown(ddb_entry->sess);
8961                 }
8962         }
8963 }
8964 /**
8965  * qla4xxx_remove_adapter - callback function to remove adapter.
8966  * @pci_dev: PCI device pointer
8967  **/
8968 static void qla4xxx_remove_adapter(struct pci_dev *pdev)
8969 {
8970         struct scsi_qla_host *ha;
8971
8972         /*
8973          * If the PCI device is disabled then it means probe_adapter had
8974          * failed and resources already cleaned up on probe_adapter exit.
8975          */
8976         if (!pci_is_enabled(pdev))
8977                 return;
8978
8979         ha = pci_get_drvdata(pdev);
8980
8981         if (is_qla40XX(ha))
8982                 qla4xxx_prevent_other_port_reinit(ha);
8983
8984         /* destroy iface from sysfs */
8985         qla4xxx_destroy_ifaces(ha);
8986
8987         if ((!ql4xdisablesysfsboot) && ha->boot_kset)
8988                 iscsi_boot_destroy_kset(ha->boot_kset);
8989
8990         qla4xxx_destroy_fw_ddb_session(ha);
8991         qla4_8xxx_free_sysfs_attr(ha);
8992
8993         qla4xxx_sysfs_ddb_remove(ha);
8994         scsi_remove_host(ha->host);
8995
8996         qla4xxx_free_adapter(ha);
8997
8998         scsi_host_put(ha->host);
8999
9000         pci_disable_pcie_error_reporting(pdev);
9001         pci_disable_device(pdev);
9002 }
9003
9004 /**
9005  * qla4xxx_config_dma_addressing() - Configure OS DMA addressing method.
9006  * @ha: HA context
9007  *
9008  * At exit, the @ha's flags.enable_64bit_addressing set to indicated
9009  * supported addressing method.
9010  */
9011 static void qla4xxx_config_dma_addressing(struct scsi_qla_host *ha)
9012 {
9013         int retval;
9014
9015         /* Update our PCI device dma_mask for full 64 bit mask */
9016         if (pci_set_dma_mask(ha->pdev, DMA_BIT_MASK(64)) == 0) {
9017                 if (pci_set_consistent_dma_mask(ha->pdev, DMA_BIT_MASK(64))) {
9018                         dev_dbg(&ha->pdev->dev,
9019                                   "Failed to set 64 bit PCI consistent mask; "
9020                                    "using 32 bit.\n");
9021                         retval = pci_set_consistent_dma_mask(ha->pdev,
9022                                                              DMA_BIT_MASK(32));
9023                 }
9024         } else
9025                 retval = pci_set_dma_mask(ha->pdev, DMA_BIT_MASK(32));
9026 }
9027
9028 static int qla4xxx_slave_alloc(struct scsi_device *sdev)
9029 {
9030         struct iscsi_cls_session *cls_sess;
9031         struct iscsi_session *sess;
9032         struct ddb_entry *ddb;
9033         int queue_depth = QL4_DEF_QDEPTH;
9034
9035         cls_sess = starget_to_session(sdev->sdev_target);
9036         sess = cls_sess->dd_data;
9037         ddb = sess->dd_data;
9038
9039         sdev->hostdata = ddb;
9040
9041         if (ql4xmaxqdepth != 0 && ql4xmaxqdepth <= 0xffffU)
9042                 queue_depth = ql4xmaxqdepth;
9043
9044         scsi_change_queue_depth(sdev, queue_depth);
9045         return 0;
9046 }
9047
9048 /**
9049  * qla4xxx_del_from_active_array - returns an active srb
9050  * @ha: Pointer to host adapter structure.
9051  * @index: index into the active_array
9052  *
9053  * This routine removes and returns the srb at the specified index
9054  **/
9055 struct srb *qla4xxx_del_from_active_array(struct scsi_qla_host *ha,
9056     uint32_t index)
9057 {
9058         struct srb *srb = NULL;
9059         struct scsi_cmnd *cmd = NULL;
9060
9061         cmd = scsi_host_find_tag(ha->host, index);
9062         if (!cmd)
9063                 return srb;
9064
9065         srb = (struct srb *)CMD_SP(cmd);
9066         if (!srb)
9067                 return srb;
9068
9069         /* update counters */
9070         if (srb->flags & SRB_DMA_VALID) {
9071                 ha->iocb_cnt -= srb->iocb_cnt;
9072                 if (srb->cmd)
9073                         srb->cmd->host_scribble =
9074                                 (unsigned char *)(unsigned long) MAX_SRBS;
9075         }
9076         return srb;
9077 }
9078
9079 /**
9080  * qla4xxx_eh_wait_on_command - waits for command to be returned by firmware
9081  * @ha: Pointer to host adapter structure.
9082  * @cmd: Scsi Command to wait on.
9083  *
9084  * This routine waits for the command to be returned by the Firmware
9085  * for some max time.
9086  **/
9087 static int qla4xxx_eh_wait_on_command(struct scsi_qla_host *ha,
9088                                       struct scsi_cmnd *cmd)
9089 {
9090         int done = 0;
9091         struct srb *rp;
9092         uint32_t max_wait_time = EH_WAIT_CMD_TOV;
9093         int ret = SUCCESS;
9094
9095         /* Dont wait on command if PCI error is being handled
9096          * by PCI AER driver
9097          */
9098         if (unlikely(pci_channel_offline(ha->pdev)) ||
9099             (test_bit(AF_EEH_BUSY, &ha->flags))) {
9100                 ql4_printk(KERN_WARNING, ha, "scsi%ld: Return from %s\n",
9101                     ha->host_no, __func__);
9102                 return ret;
9103         }
9104
9105         do {
9106                 /* Checking to see if its returned to OS */
9107                 rp = (struct srb *) CMD_SP(cmd);
9108                 if (rp == NULL) {
9109                         done++;
9110                         break;
9111                 }
9112
9113                 msleep(2000);
9114         } while (max_wait_time--);
9115
9116         return done;
9117 }
9118
9119 /**
9120  * qla4xxx_wait_for_hba_online - waits for HBA to come online
9121  * @ha: Pointer to host adapter structure
9122  **/
9123 static int qla4xxx_wait_for_hba_online(struct scsi_qla_host *ha)
9124 {
9125         unsigned long wait_online;
9126
9127         wait_online = jiffies + (HBA_ONLINE_TOV * HZ);
9128         while (time_before(jiffies, wait_online)) {
9129
9130                 if (adapter_up(ha))
9131                         return QLA_SUCCESS;
9132
9133                 msleep(2000);
9134         }
9135
9136         return QLA_ERROR;
9137 }
9138
9139 /**
9140  * qla4xxx_eh_wait_for_commands - wait for active cmds to finish.
9141  * @ha: pointer to HBA
9142  * @t: target id
9143  * @l: lun id
9144  *
9145  * This function waits for all outstanding commands to a lun to complete. It
9146  * returns 0 if all pending commands are returned and 1 otherwise.
9147  **/
9148 static int qla4xxx_eh_wait_for_commands(struct scsi_qla_host *ha,
9149                                         struct scsi_target *stgt,
9150                                         struct scsi_device *sdev)
9151 {
9152         int cnt;
9153         int status = 0;
9154         struct scsi_cmnd *cmd;
9155
9156         /*
9157          * Waiting for all commands for the designated target or dev
9158          * in the active array
9159          */
9160         for (cnt = 0; cnt < ha->host->can_queue; cnt++) {
9161                 cmd = scsi_host_find_tag(ha->host, cnt);
9162                 if (cmd && stgt == scsi_target(cmd->device) &&
9163                     (!sdev || sdev == cmd->device)) {
9164                         if (!qla4xxx_eh_wait_on_command(ha, cmd)) {
9165                                 status++;
9166                                 break;
9167                         }
9168                 }
9169         }
9170         return status;
9171 }
9172
9173 /**
9174  * qla4xxx_eh_abort - callback for abort task.
9175  * @cmd: Pointer to Linux's SCSI command structure
9176  *
9177  * This routine is called by the Linux OS to abort the specified
9178  * command.
9179  **/
9180 static int qla4xxx_eh_abort(struct scsi_cmnd *cmd)
9181 {
9182         struct scsi_qla_host *ha = to_qla_host(cmd->device->host);
9183         unsigned int id = cmd->device->id;
9184         uint64_t lun = cmd->device->lun;
9185         unsigned long flags;
9186         struct srb *srb = NULL;
9187         int ret = SUCCESS;
9188         int wait = 0;
9189
9190         ql4_printk(KERN_INFO, ha, "scsi%ld:%d:%llu: Abort command issued cmd=%p, cdb=0x%x\n",
9191                    ha->host_no, id, lun, cmd, cmd->cmnd[0]);
9192
9193         spin_lock_irqsave(&ha->hardware_lock, flags);
9194         srb = (struct srb *) CMD_SP(cmd);
9195         if (!srb) {
9196                 spin_unlock_irqrestore(&ha->hardware_lock, flags);
9197                 ql4_printk(KERN_INFO, ha, "scsi%ld:%d:%llu: Specified command has already completed.\n",
9198                            ha->host_no, id, lun);
9199                 return SUCCESS;
9200         }
9201         kref_get(&srb->srb_ref);
9202         spin_unlock_irqrestore(&ha->hardware_lock, flags);
9203
9204         if (qla4xxx_abort_task(ha, srb) != QLA_SUCCESS) {
9205                 DEBUG3(printk("scsi%ld:%d:%llu: Abort_task mbx failed.\n",
9206                     ha->host_no, id, lun));
9207                 ret = FAILED;
9208         } else {
9209                 DEBUG3(printk("scsi%ld:%d:%llu: Abort_task mbx success.\n",
9210                     ha->host_no, id, lun));
9211                 wait = 1;
9212         }
9213
9214         kref_put(&srb->srb_ref, qla4xxx_srb_compl);
9215
9216         /* Wait for command to complete */
9217         if (wait) {
9218                 if (!qla4xxx_eh_wait_on_command(ha, cmd)) {
9219                         DEBUG2(printk("scsi%ld:%d:%llu: Abort handler timed out\n",
9220                             ha->host_no, id, lun));
9221                         ret = FAILED;
9222                 }
9223         }
9224
9225         ql4_printk(KERN_INFO, ha,
9226             "scsi%ld:%d:%llu: Abort command - %s\n",
9227             ha->host_no, id, lun, (ret == SUCCESS) ? "succeeded" : "failed");
9228
9229         return ret;
9230 }
9231
9232 /**
9233  * qla4xxx_eh_device_reset - callback for target reset.
9234  * @cmd: Pointer to Linux's SCSI command structure
9235  *
9236  * This routine is called by the Linux OS to reset all luns on the
9237  * specified target.
9238  **/
9239 static int qla4xxx_eh_device_reset(struct scsi_cmnd *cmd)
9240 {
9241         struct scsi_qla_host *ha = to_qla_host(cmd->device->host);
9242         struct ddb_entry *ddb_entry = cmd->device->hostdata;
9243         int ret = FAILED, stat;
9244
9245         if (!ddb_entry)
9246                 return ret;
9247
9248         ret = iscsi_block_scsi_eh(cmd);
9249         if (ret)
9250                 return ret;
9251         ret = FAILED;
9252
9253         ql4_printk(KERN_INFO, ha,
9254                    "scsi%ld:%d:%d:%llu: DEVICE RESET ISSUED.\n", ha->host_no,
9255                    cmd->device->channel, cmd->device->id, cmd->device->lun);
9256
9257         DEBUG2(printk(KERN_INFO
9258                       "scsi%ld: DEVICE_RESET cmd=%p jiffies = 0x%lx, to=%x,"
9259                       "dpc_flags=%lx, status=%x allowed=%d\n", ha->host_no,
9260                       cmd, jiffies, cmd->request->timeout / HZ,
9261                       ha->dpc_flags, cmd->result, cmd->allowed));
9262
9263         /* FIXME: wait for hba to go online */
9264         stat = qla4xxx_reset_lun(ha, ddb_entry, cmd->device->lun);
9265         if (stat != QLA_SUCCESS) {
9266                 ql4_printk(KERN_INFO, ha, "DEVICE RESET FAILED. %d\n", stat);
9267                 goto eh_dev_reset_done;
9268         }
9269
9270         if (qla4xxx_eh_wait_for_commands(ha, scsi_target(cmd->device),
9271                                          cmd->device)) {
9272                 ql4_printk(KERN_INFO, ha,
9273                            "DEVICE RESET FAILED - waiting for "
9274                            "commands.\n");
9275                 goto eh_dev_reset_done;
9276         }
9277
9278         /* Send marker. */
9279         if (qla4xxx_send_marker_iocb(ha, ddb_entry, cmd->device->lun,
9280                 MM_LUN_RESET) != QLA_SUCCESS)
9281                 goto eh_dev_reset_done;
9282
9283         ql4_printk(KERN_INFO, ha,
9284                    "scsi(%ld:%d:%d:%llu): DEVICE RESET SUCCEEDED.\n",
9285                    ha->host_no, cmd->device->channel, cmd->device->id,
9286                    cmd->device->lun);
9287
9288         ret = SUCCESS;
9289
9290 eh_dev_reset_done:
9291
9292         return ret;
9293 }
9294
9295 /**
9296  * qla4xxx_eh_target_reset - callback for target reset.
9297  * @cmd: Pointer to Linux's SCSI command structure
9298  *
9299  * This routine is called by the Linux OS to reset the target.
9300  **/
9301 static int qla4xxx_eh_target_reset(struct scsi_cmnd *cmd)
9302 {
9303         struct scsi_qla_host *ha = to_qla_host(cmd->device->host);
9304         struct ddb_entry *ddb_entry = cmd->device->hostdata;
9305         int stat, ret;
9306
9307         if (!ddb_entry)
9308                 return FAILED;
9309
9310         ret = iscsi_block_scsi_eh(cmd);
9311         if (ret)
9312                 return ret;
9313
9314         starget_printk(KERN_INFO, scsi_target(cmd->device),
9315                        "WARM TARGET RESET ISSUED.\n");
9316
9317         DEBUG2(printk(KERN_INFO
9318                       "scsi%ld: TARGET_DEVICE_RESET cmd=%p jiffies = 0x%lx, "
9319                       "to=%x,dpc_flags=%lx, status=%x allowed=%d\n",
9320                       ha->host_no, cmd, jiffies, cmd->request->timeout / HZ,
9321                       ha->dpc_flags, cmd->result, cmd->allowed));
9322
9323         stat = qla4xxx_reset_target(ha, ddb_entry);
9324         if (stat != QLA_SUCCESS) {
9325                 starget_printk(KERN_INFO, scsi_target(cmd->device),
9326                                "WARM TARGET RESET FAILED.\n");
9327                 return FAILED;
9328         }
9329
9330         if (qla4xxx_eh_wait_for_commands(ha, scsi_target(cmd->device),
9331                                          NULL)) {
9332                 starget_printk(KERN_INFO, scsi_target(cmd->device),
9333                                "WARM TARGET DEVICE RESET FAILED - "
9334                                "waiting for commands.\n");
9335                 return FAILED;
9336         }
9337
9338         /* Send marker. */
9339         if (qla4xxx_send_marker_iocb(ha, ddb_entry, cmd->device->lun,
9340                 MM_TGT_WARM_RESET) != QLA_SUCCESS) {
9341                 starget_printk(KERN_INFO, scsi_target(cmd->device),
9342                                "WARM TARGET DEVICE RESET FAILED - "
9343                                "marker iocb failed.\n");
9344                 return FAILED;
9345         }
9346
9347         starget_printk(KERN_INFO, scsi_target(cmd->device),
9348                        "WARM TARGET RESET SUCCEEDED.\n");
9349         return SUCCESS;
9350 }
9351
9352 /**
9353  * qla4xxx_is_eh_active - check if error handler is running
9354  * @shost: Pointer to SCSI Host struct
9355  *
9356  * This routine finds that if reset host is called in EH
9357  * scenario or from some application like sg_reset
9358  **/
9359 static int qla4xxx_is_eh_active(struct Scsi_Host *shost)
9360 {
9361         if (shost->shost_state == SHOST_RECOVERY)
9362                 return 1;
9363         return 0;
9364 }
9365
9366 /**
9367  * qla4xxx_eh_host_reset - kernel callback
9368  * @cmd: Pointer to Linux's SCSI command structure
9369  *
9370  * This routine is invoked by the Linux kernel to perform fatal error
9371  * recovery on the specified adapter.
9372  **/
9373 static int qla4xxx_eh_host_reset(struct scsi_cmnd *cmd)
9374 {
9375         int return_status = FAILED;
9376         struct scsi_qla_host *ha;
9377
9378         ha = to_qla_host(cmd->device->host);
9379
9380         if ((is_qla8032(ha) || is_qla8042(ha)) && ql4xdontresethba)
9381                 qla4_83xx_set_idc_dontreset(ha);
9382
9383         /*
9384          * For ISP8324 and ISP8042, if IDC_CTRL DONTRESET_BIT0 is set by other
9385          * protocol drivers, we should not set device_state to NEED_RESET
9386          */
9387         if (ql4xdontresethba ||
9388             ((is_qla8032(ha) || is_qla8042(ha)) &&
9389              qla4_83xx_idc_dontreset(ha))) {
9390                 DEBUG2(printk("scsi%ld: %s: Don't Reset HBA\n",
9391                      ha->host_no, __func__));
9392
9393                 /* Clear outstanding srb in queues */
9394                 if (qla4xxx_is_eh_active(cmd->device->host))
9395                         qla4xxx_abort_active_cmds(ha, DID_ABORT << 16);
9396
9397                 return FAILED;
9398         }
9399
9400         ql4_printk(KERN_INFO, ha,
9401                    "scsi(%ld:%d:%d:%llu): HOST RESET ISSUED.\n", ha->host_no,
9402                    cmd->device->channel, cmd->device->id, cmd->device->lun);
9403
9404         if (qla4xxx_wait_for_hba_online(ha) != QLA_SUCCESS) {
9405                 DEBUG2(printk("scsi%ld:%d: %s: Unable to reset host.  Adapter "
9406                               "DEAD.\n", ha->host_no, cmd->device->channel,
9407                               __func__));
9408
9409                 return FAILED;
9410         }
9411
9412         if (!test_bit(DPC_RESET_HA, &ha->dpc_flags)) {
9413                 if (is_qla80XX(ha))
9414                         set_bit(DPC_RESET_HA_FW_CONTEXT, &ha->dpc_flags);
9415                 else
9416                         set_bit(DPC_RESET_HA, &ha->dpc_flags);
9417         }
9418
9419         if (qla4xxx_recover_adapter(ha) == QLA_SUCCESS)
9420                 return_status = SUCCESS;
9421
9422         ql4_printk(KERN_INFO, ha, "HOST RESET %s.\n",
9423                    return_status == FAILED ? "FAILED" : "SUCCEEDED");
9424
9425         return return_status;
9426 }
9427
9428 static int qla4xxx_context_reset(struct scsi_qla_host *ha)
9429 {
9430         uint32_t mbox_cmd[MBOX_REG_COUNT];
9431         uint32_t mbox_sts[MBOX_REG_COUNT];
9432         struct addr_ctrl_blk_def *acb = NULL;
9433         uint32_t acb_len = sizeof(struct addr_ctrl_blk_def);
9434         int rval = QLA_SUCCESS;
9435         dma_addr_t acb_dma;
9436
9437         acb = dma_alloc_coherent(&ha->pdev->dev,
9438                                  sizeof(struct addr_ctrl_blk_def),
9439                                  &acb_dma, GFP_KERNEL);
9440         if (!acb) {
9441                 ql4_printk(KERN_ERR, ha, "%s: Unable to alloc acb\n",
9442                            __func__);
9443                 rval = -ENOMEM;
9444                 goto exit_port_reset;
9445         }
9446
9447         memset(acb, 0, acb_len);
9448
9449         rval = qla4xxx_get_acb(ha, acb_dma, PRIMARI_ACB, acb_len);
9450         if (rval != QLA_SUCCESS) {
9451                 rval = -EIO;
9452                 goto exit_free_acb;
9453         }
9454
9455         rval = qla4xxx_disable_acb(ha);
9456         if (rval != QLA_SUCCESS) {
9457                 rval = -EIO;
9458                 goto exit_free_acb;
9459         }
9460
9461         wait_for_completion_timeout(&ha->disable_acb_comp,
9462                                     DISABLE_ACB_TOV * HZ);
9463
9464         rval = qla4xxx_set_acb(ha, &mbox_cmd[0], &mbox_sts[0], acb_dma);
9465         if (rval != QLA_SUCCESS) {
9466                 rval = -EIO;
9467                 goto exit_free_acb;
9468         }
9469
9470 exit_free_acb:
9471         dma_free_coherent(&ha->pdev->dev, sizeof(struct addr_ctrl_blk_def),
9472                           acb, acb_dma);
9473 exit_port_reset:
9474         DEBUG2(ql4_printk(KERN_INFO, ha, "%s %s\n", __func__,
9475                           rval == QLA_SUCCESS ? "SUCCEEDED" : "FAILED"));
9476         return rval;
9477 }
9478
9479 static int qla4xxx_host_reset(struct Scsi_Host *shost, int reset_type)
9480 {
9481         struct scsi_qla_host *ha = to_qla_host(shost);
9482         int rval = QLA_SUCCESS;
9483         uint32_t idc_ctrl;
9484
9485         if (ql4xdontresethba) {
9486                 DEBUG2(ql4_printk(KERN_INFO, ha, "%s: Don't Reset HBA\n",
9487                                   __func__));
9488                 rval = -EPERM;
9489                 goto exit_host_reset;
9490         }
9491
9492         if (test_bit(DPC_RESET_HA, &ha->dpc_flags))
9493                 goto recover_adapter;
9494
9495         switch (reset_type) {
9496         case SCSI_ADAPTER_RESET:
9497                 set_bit(DPC_RESET_HA, &ha->dpc_flags);
9498                 break;
9499         case SCSI_FIRMWARE_RESET:
9500                 if (!test_bit(DPC_RESET_HA, &ha->dpc_flags)) {
9501                         if (is_qla80XX(ha))
9502                                 /* set firmware context reset */
9503                                 set_bit(DPC_RESET_HA_FW_CONTEXT,
9504                                         &ha->dpc_flags);
9505                         else {
9506                                 rval = qla4xxx_context_reset(ha);
9507                                 goto exit_host_reset;
9508                         }
9509                 }
9510                 break;
9511         }
9512
9513 recover_adapter:
9514         /* For ISP8324 and ISP8042 set graceful reset bit in IDC_DRV_CTRL if
9515          * reset is issued by application */
9516         if ((is_qla8032(ha) || is_qla8042(ha)) &&
9517             test_bit(DPC_RESET_HA, &ha->dpc_flags)) {
9518                 idc_ctrl = qla4_83xx_rd_reg(ha, QLA83XX_IDC_DRV_CTRL);
9519                 qla4_83xx_wr_reg(ha, QLA83XX_IDC_DRV_CTRL,
9520                                  (idc_ctrl | GRACEFUL_RESET_BIT1));
9521         }
9522
9523         rval = qla4xxx_recover_adapter(ha);
9524         if (rval != QLA_SUCCESS) {
9525                 DEBUG2(ql4_printk(KERN_INFO, ha, "%s: recover adapter fail\n",
9526                                   __func__));
9527                 rval = -EIO;
9528         }
9529
9530 exit_host_reset:
9531         return rval;
9532 }
9533
9534 /* PCI AER driver recovers from all correctable errors w/o
9535  * driver intervention. For uncorrectable errors PCI AER
9536  * driver calls the following device driver's callbacks
9537  *
9538  * - Fatal Errors - link_reset
9539  * - Non-Fatal Errors - driver's error_detected() which
9540  * returns CAN_RECOVER, NEED_RESET or DISCONNECT.
9541  *
9542  * PCI AER driver calls
9543  * CAN_RECOVER - driver's mmio_enabled(), mmio_enabled()
9544  *               returns RECOVERED or NEED_RESET if fw_hung
9545  * NEED_RESET - driver's slot_reset()
9546  * DISCONNECT - device is dead & cannot recover
9547  * RECOVERED - driver's resume()
9548  */
9549 static pci_ers_result_t
9550 qla4xxx_pci_error_detected(struct pci_dev *pdev, pci_channel_state_t state)
9551 {
9552         struct scsi_qla_host *ha = pci_get_drvdata(pdev);
9553
9554         ql4_printk(KERN_WARNING, ha, "scsi%ld: %s: error detected:state %x\n",
9555             ha->host_no, __func__, state);
9556
9557         if (!is_aer_supported(ha))
9558                 return PCI_ERS_RESULT_NONE;
9559
9560         switch (state) {
9561         case pci_channel_io_normal:
9562                 clear_bit(AF_EEH_BUSY, &ha->flags);
9563                 return PCI_ERS_RESULT_CAN_RECOVER;
9564         case pci_channel_io_frozen:
9565                 set_bit(AF_EEH_BUSY, &ha->flags);
9566                 qla4xxx_mailbox_premature_completion(ha);
9567                 qla4xxx_free_irqs(ha);
9568                 pci_disable_device(pdev);
9569                 /* Return back all IOs */
9570                 qla4xxx_abort_active_cmds(ha, DID_RESET << 16);
9571                 return PCI_ERS_RESULT_NEED_RESET;
9572         case pci_channel_io_perm_failure:
9573                 set_bit(AF_EEH_BUSY, &ha->flags);
9574                 set_bit(AF_PCI_CHANNEL_IO_PERM_FAILURE, &ha->flags);
9575                 qla4xxx_abort_active_cmds(ha, DID_NO_CONNECT << 16);
9576                 return PCI_ERS_RESULT_DISCONNECT;
9577         }
9578         return PCI_ERS_RESULT_NEED_RESET;
9579 }
9580
9581 /**
9582  * qla4xxx_pci_mmio_enabled() gets called if
9583  * qla4xxx_pci_error_detected() returns PCI_ERS_RESULT_CAN_RECOVER
9584  * and read/write to the device still works.
9585  **/
9586 static pci_ers_result_t
9587 qla4xxx_pci_mmio_enabled(struct pci_dev *pdev)
9588 {
9589         struct scsi_qla_host *ha = pci_get_drvdata(pdev);
9590
9591         if (!is_aer_supported(ha))
9592                 return PCI_ERS_RESULT_NONE;
9593
9594         return PCI_ERS_RESULT_RECOVERED;
9595 }
9596
9597 static uint32_t qla4_8xxx_error_recovery(struct scsi_qla_host *ha)
9598 {
9599         uint32_t rval = QLA_ERROR;
9600         int fn;
9601         struct pci_dev *other_pdev = NULL;
9602
9603         ql4_printk(KERN_WARNING, ha, "scsi%ld: In %s\n", ha->host_no, __func__);
9604
9605         set_bit(DPC_RESET_ACTIVE, &ha->dpc_flags);
9606
9607         if (test_bit(AF_ONLINE, &ha->flags)) {
9608                 clear_bit(AF_ONLINE, &ha->flags);
9609                 clear_bit(AF_LINK_UP, &ha->flags);
9610                 iscsi_host_for_each_session(ha->host, qla4xxx_fail_session);
9611                 qla4xxx_process_aen(ha, FLUSH_DDB_CHANGED_AENS);
9612         }
9613
9614         fn = PCI_FUNC(ha->pdev->devfn);
9615         if (is_qla8022(ha)) {
9616                 while (fn > 0) {
9617                         fn--;
9618                         ql4_printk(KERN_INFO, ha, "scsi%ld: %s: Finding PCI device at func %x\n",
9619                                    ha->host_no, __func__, fn);
9620                         /* Get the pci device given the domain, bus,
9621                          * slot/function number */
9622                         other_pdev = pci_get_domain_bus_and_slot(
9623                                            pci_domain_nr(ha->pdev->bus),
9624                                            ha->pdev->bus->number,
9625                                            PCI_DEVFN(PCI_SLOT(ha->pdev->devfn),
9626                                            fn));
9627
9628                         if (!other_pdev)
9629                                 continue;
9630
9631                         if (atomic_read(&other_pdev->enable_cnt)) {
9632                                 ql4_printk(KERN_INFO, ha, "scsi%ld: %s: Found PCI func in enabled state%x\n",
9633                                            ha->host_no, __func__, fn);
9634                                 pci_dev_put(other_pdev);
9635                                 break;
9636                         }
9637                         pci_dev_put(other_pdev);
9638                 }
9639         } else {
9640                 /* this case is meant for ISP83xx/ISP84xx only */
9641                 if (qla4_83xx_can_perform_reset(ha)) {
9642                         /* reset fn as iSCSI is going to perform the reset */
9643                         fn = 0;
9644                 }
9645         }
9646
9647         /* The first function on the card, the reset owner will
9648          * start & initialize the firmware. The other functions
9649          * on the card will reset the firmware context
9650          */
9651         if (!fn) {
9652                 ql4_printk(KERN_INFO, ha, "scsi%ld: %s: devfn being reset "
9653                     "0x%x is the owner\n", ha->host_no, __func__,
9654                     ha->pdev->devfn);
9655
9656                 ha->isp_ops->idc_lock(ha);
9657                 qla4_8xxx_wr_direct(ha, QLA8XXX_CRB_DEV_STATE,
9658                                     QLA8XXX_DEV_COLD);
9659                 ha->isp_ops->idc_unlock(ha);
9660
9661                 rval = qla4_8xxx_update_idc_reg(ha);
9662                 if (rval == QLA_ERROR) {
9663                         ql4_printk(KERN_INFO, ha, "scsi%ld: %s: HW State: FAILED\n",
9664                                    ha->host_no, __func__);
9665                         ha->isp_ops->idc_lock(ha);
9666                         qla4_8xxx_wr_direct(ha, QLA8XXX_CRB_DEV_STATE,
9667                                             QLA8XXX_DEV_FAILED);
9668                         ha->isp_ops->idc_unlock(ha);
9669                         goto exit_error_recovery;
9670                 }
9671
9672                 clear_bit(AF_FW_RECOVERY, &ha->flags);
9673                 rval = qla4xxx_initialize_adapter(ha, RESET_ADAPTER);
9674
9675                 if (rval != QLA_SUCCESS) {
9676                         ql4_printk(KERN_INFO, ha, "scsi%ld: %s: HW State: "
9677                             "FAILED\n", ha->host_no, __func__);
9678                         qla4xxx_free_irqs(ha);
9679                         ha->isp_ops->idc_lock(ha);
9680                         qla4_8xxx_clear_drv_active(ha);
9681                         qla4_8xxx_wr_direct(ha, QLA8XXX_CRB_DEV_STATE,
9682                                             QLA8XXX_DEV_FAILED);
9683                         ha->isp_ops->idc_unlock(ha);
9684                 } else {
9685                         ql4_printk(KERN_INFO, ha, "scsi%ld: %s: HW State: "
9686                             "READY\n", ha->host_no, __func__);
9687                         ha->isp_ops->idc_lock(ha);
9688                         qla4_8xxx_wr_direct(ha, QLA8XXX_CRB_DEV_STATE,
9689                                             QLA8XXX_DEV_READY);
9690                         /* Clear driver state register */
9691                         qla4_8xxx_wr_direct(ha, QLA8XXX_CRB_DRV_STATE, 0);
9692                         qla4_8xxx_set_drv_active(ha);
9693                         ha->isp_ops->idc_unlock(ha);
9694                         ha->isp_ops->enable_intrs(ha);
9695                 }
9696         } else {
9697                 ql4_printk(KERN_INFO, ha, "scsi%ld: %s: devfn 0x%x is not "
9698                     "the reset owner\n", ha->host_no, __func__,
9699                     ha->pdev->devfn);
9700                 if ((qla4_8xxx_rd_direct(ha, QLA8XXX_CRB_DEV_STATE) ==
9701                      QLA8XXX_DEV_READY)) {
9702                         clear_bit(AF_FW_RECOVERY, &ha->flags);
9703                         rval = qla4xxx_initialize_adapter(ha, RESET_ADAPTER);
9704                         if (rval == QLA_SUCCESS)
9705                                 ha->isp_ops->enable_intrs(ha);
9706                         else
9707                                 qla4xxx_free_irqs(ha);
9708
9709                         ha->isp_ops->idc_lock(ha);
9710                         qla4_8xxx_set_drv_active(ha);
9711                         ha->isp_ops->idc_unlock(ha);
9712                 }
9713         }
9714 exit_error_recovery:
9715         clear_bit(DPC_RESET_ACTIVE, &ha->dpc_flags);
9716         return rval;
9717 }
9718
9719 static pci_ers_result_t
9720 qla4xxx_pci_slot_reset(struct pci_dev *pdev)
9721 {
9722         pci_ers_result_t ret = PCI_ERS_RESULT_DISCONNECT;
9723         struct scsi_qla_host *ha = pci_get_drvdata(pdev);
9724         int rc;
9725
9726         ql4_printk(KERN_WARNING, ha, "scsi%ld: %s: slot_reset\n",
9727             ha->host_no, __func__);
9728
9729         if (!is_aer_supported(ha))
9730                 return PCI_ERS_RESULT_NONE;
9731
9732         /* Restore the saved state of PCIe device -
9733          * BAR registers, PCI Config space, PCIX, MSI,
9734          * IOV states
9735          */
9736         pci_restore_state(pdev);
9737
9738         /* pci_restore_state() clears the saved_state flag of the device
9739          * save restored state which resets saved_state flag
9740          */
9741         pci_save_state(pdev);
9742
9743         /* Initialize device or resume if in suspended state */
9744         rc = pci_enable_device(pdev);
9745         if (rc) {
9746                 ql4_printk(KERN_WARNING, ha, "scsi%ld: %s: Can't re-enable "
9747                     "device after reset\n", ha->host_no, __func__);
9748                 goto exit_slot_reset;
9749         }
9750
9751         ha->isp_ops->disable_intrs(ha);
9752
9753         if (is_qla80XX(ha)) {
9754                 if (qla4_8xxx_error_recovery(ha) == QLA_SUCCESS) {
9755                         ret = PCI_ERS_RESULT_RECOVERED;
9756                         goto exit_slot_reset;
9757                 } else
9758                         goto exit_slot_reset;
9759         }
9760
9761 exit_slot_reset:
9762         ql4_printk(KERN_WARNING, ha, "scsi%ld: %s: Return=%x\n"
9763             "device after reset\n", ha->host_no, __func__, ret);
9764         return ret;
9765 }
9766
9767 static void
9768 qla4xxx_pci_resume(struct pci_dev *pdev)
9769 {
9770         struct scsi_qla_host *ha = pci_get_drvdata(pdev);
9771         int ret;
9772
9773         ql4_printk(KERN_WARNING, ha, "scsi%ld: %s: pci_resume\n",
9774             ha->host_no, __func__);
9775
9776         ret = qla4xxx_wait_for_hba_online(ha);
9777         if (ret != QLA_SUCCESS) {
9778                 ql4_printk(KERN_ERR, ha, "scsi%ld: %s: the device failed to "
9779                     "resume I/O from slot/link_reset\n", ha->host_no,
9780                      __func__);
9781         }
9782
9783         pci_cleanup_aer_uncorrect_error_status(pdev);
9784         clear_bit(AF_EEH_BUSY, &ha->flags);
9785 }
9786
9787 static const struct pci_error_handlers qla4xxx_err_handler = {
9788         .error_detected = qla4xxx_pci_error_detected,
9789         .mmio_enabled = qla4xxx_pci_mmio_enabled,
9790         .slot_reset = qla4xxx_pci_slot_reset,
9791         .resume = qla4xxx_pci_resume,
9792 };
9793
9794 static struct pci_device_id qla4xxx_pci_tbl[] = {
9795         {
9796                 .vendor         = PCI_VENDOR_ID_QLOGIC,
9797                 .device         = PCI_DEVICE_ID_QLOGIC_ISP4010,
9798                 .subvendor      = PCI_ANY_ID,
9799                 .subdevice      = PCI_ANY_ID,
9800         },
9801         {
9802                 .vendor         = PCI_VENDOR_ID_QLOGIC,
9803                 .device         = PCI_DEVICE_ID_QLOGIC_ISP4022,
9804                 .subvendor      = PCI_ANY_ID,
9805                 .subdevice      = PCI_ANY_ID,
9806         },
9807         {
9808                 .vendor         = PCI_VENDOR_ID_QLOGIC,
9809                 .device         = PCI_DEVICE_ID_QLOGIC_ISP4032,
9810                 .subvendor      = PCI_ANY_ID,
9811                 .subdevice      = PCI_ANY_ID,
9812         },
9813         {
9814                 .vendor         = PCI_VENDOR_ID_QLOGIC,
9815                 .device         = PCI_DEVICE_ID_QLOGIC_ISP8022,
9816                 .subvendor      = PCI_ANY_ID,
9817                 .subdevice      = PCI_ANY_ID,
9818         },
9819         {
9820                 .vendor         = PCI_VENDOR_ID_QLOGIC,
9821                 .device         = PCI_DEVICE_ID_QLOGIC_ISP8324,
9822                 .subvendor      = PCI_ANY_ID,
9823                 .subdevice      = PCI_ANY_ID,
9824         },
9825         {
9826                 .vendor         = PCI_VENDOR_ID_QLOGIC,
9827                 .device         = PCI_DEVICE_ID_QLOGIC_ISP8042,
9828                 .subvendor      = PCI_ANY_ID,
9829                 .subdevice      = PCI_ANY_ID,
9830         },
9831         {0, 0},
9832 };
9833 MODULE_DEVICE_TABLE(pci, qla4xxx_pci_tbl);
9834
9835 static struct pci_driver qla4xxx_pci_driver = {
9836         .name           = DRIVER_NAME,
9837         .id_table       = qla4xxx_pci_tbl,
9838         .probe          = qla4xxx_probe_adapter,
9839         .remove         = qla4xxx_remove_adapter,
9840         .err_handler = &qla4xxx_err_handler,
9841 };
9842
9843 static int __init qla4xxx_module_init(void)
9844 {
9845         int ret;
9846
9847         if (ql4xqfulltracking)
9848                 qla4xxx_driver_template.track_queue_depth = 1;
9849
9850         /* Allocate cache for SRBs. */
9851         srb_cachep = kmem_cache_create("qla4xxx_srbs", sizeof(struct srb), 0,
9852                                        SLAB_HWCACHE_ALIGN, NULL);
9853         if (srb_cachep == NULL) {
9854                 printk(KERN_ERR
9855                        "%s: Unable to allocate SRB cache..."
9856                        "Failing load!\n", DRIVER_NAME);
9857                 ret = -ENOMEM;
9858                 goto no_srp_cache;
9859         }
9860
9861         /* Derive version string. */
9862         strcpy(qla4xxx_version_str, QLA4XXX_DRIVER_VERSION);
9863         if (ql4xextended_error_logging)
9864                 strcat(qla4xxx_version_str, "-debug");
9865
9866         qla4xxx_scsi_transport =
9867                 iscsi_register_transport(&qla4xxx_iscsi_transport);
9868         if (!qla4xxx_scsi_transport){
9869                 ret = -ENODEV;
9870                 goto release_srb_cache;
9871         }
9872
9873         ret = pci_register_driver(&qla4xxx_pci_driver);
9874         if (ret)
9875                 goto unregister_transport;
9876
9877         printk(KERN_INFO "QLogic iSCSI HBA Driver\n");
9878         return 0;
9879
9880 unregister_transport:
9881         iscsi_unregister_transport(&qla4xxx_iscsi_transport);
9882 release_srb_cache:
9883         kmem_cache_destroy(srb_cachep);
9884 no_srp_cache:
9885         return ret;
9886 }
9887
9888 static void __exit qla4xxx_module_exit(void)
9889 {
9890         pci_unregister_driver(&qla4xxx_pci_driver);
9891         iscsi_unregister_transport(&qla4xxx_iscsi_transport);
9892         kmem_cache_destroy(srb_cachep);
9893 }
9894
9895 module_init(qla4xxx_module_init);
9896 module_exit(qla4xxx_module_exit);
9897
9898 MODULE_AUTHOR("QLogic Corporation");
9899 MODULE_DESCRIPTION("QLogic iSCSI HBA Driver");
9900 MODULE_LICENSE("GPL");
9901 MODULE_VERSION(QLA4XXX_DRIVER_VERSION);