linux/drivers/scsi/qla4xxx/ql4_os.c
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   1// SPDX-License-Identifier: GPL-2.0-only
   2/*
   3 * QLogic iSCSI HBA Driver
   4 * Copyright (c)  2003-2013 QLogic Corporation
   5 */
   6#include <linux/moduleparam.h>
   7#include <linux/slab.h>
   8#include <linux/blkdev.h>
   9#include <linux/iscsi_boot_sysfs.h>
  10#include <linux/inet.h>
  11
  12#include <scsi/scsi_tcq.h>
  13#include <scsi/scsicam.h>
  14
  15#include "ql4_def.h"
  16#include "ql4_version.h"
  17#include "ql4_glbl.h"
  18#include "ql4_dbg.h"
  19#include "ql4_inline.h"
  20#include "ql4_83xx.h"
  21
  22/*
  23 * Driver version
  24 */
  25static char qla4xxx_version_str[40];
  26
  27/*
  28 * SRB allocation cache
  29 */
  30static struct kmem_cache *srb_cachep;
  31
  32/*
  33 * Module parameter information and variables
  34 */
  35static int ql4xdisablesysfsboot = 1;
  36module_param(ql4xdisablesysfsboot, int, S_IRUGO | S_IWUSR);
  37MODULE_PARM_DESC(ql4xdisablesysfsboot,
  38                 " Set to disable exporting boot targets to sysfs.\n"
  39                 "\t\t  0 - Export boot targets\n"
  40                 "\t\t  1 - Do not export boot targets (Default)");
  41
  42int ql4xdontresethba;
  43module_param(ql4xdontresethba, int, S_IRUGO | S_IWUSR);
  44MODULE_PARM_DESC(ql4xdontresethba,
  45                 " Don't reset the HBA for driver recovery.\n"
  46                 "\t\t  0 - It will reset HBA (Default)\n"
  47                 "\t\t  1 - It will NOT reset HBA");
  48
  49int ql4xextended_error_logging;
  50module_param(ql4xextended_error_logging, int, S_IRUGO | S_IWUSR);
  51MODULE_PARM_DESC(ql4xextended_error_logging,
  52                 " Option to enable extended error logging.\n"
  53                 "\t\t  0 - no logging (Default)\n"
  54                 "\t\t  2 - debug logging");
  55
  56int ql4xenablemsix = 1;
  57module_param(ql4xenablemsix, int, S_IRUGO|S_IWUSR);
  58MODULE_PARM_DESC(ql4xenablemsix,
  59                 " Set to enable MSI or MSI-X interrupt mechanism.\n"
  60                 "\t\t  0 = enable INTx interrupt mechanism.\n"
  61                 "\t\t  1 = enable MSI-X interrupt mechanism (Default).\n"
  62                 "\t\t  2 = enable MSI interrupt mechanism.");
  63
  64#define QL4_DEF_QDEPTH 32
  65static int ql4xmaxqdepth = QL4_DEF_QDEPTH;
  66module_param(ql4xmaxqdepth, int, S_IRUGO | S_IWUSR);
  67MODULE_PARM_DESC(ql4xmaxqdepth,
  68                 " Maximum queue depth to report for target devices.\n"
  69                 "\t\t  Default: 32.");
  70
  71static int ql4xqfulltracking = 1;
  72module_param(ql4xqfulltracking, int, S_IRUGO | S_IWUSR);
  73MODULE_PARM_DESC(ql4xqfulltracking,
  74                 " Enable or disable dynamic tracking and adjustment of\n"
  75                 "\t\t scsi device queue depth.\n"
  76                 "\t\t  0 - Disable.\n"
  77                 "\t\t  1 - Enable. (Default)");
  78
  79static int ql4xsess_recovery_tmo = QL4_SESS_RECOVERY_TMO;
  80module_param(ql4xsess_recovery_tmo, int, S_IRUGO);
  81MODULE_PARM_DESC(ql4xsess_recovery_tmo,
  82                " Target Session Recovery Timeout.\n"
  83                "\t\t  Default: 120 sec.");
  84
  85int ql4xmdcapmask = 0;
  86module_param(ql4xmdcapmask, int, S_IRUGO);
  87MODULE_PARM_DESC(ql4xmdcapmask,
  88                 " Set the Minidump driver capture mask level.\n"
  89                 "\t\t  Default is 0 (firmware default capture mask)\n"
  90                 "\t\t  Can be set to 0x3, 0x7, 0xF, 0x1F, 0x3F, 0x7F, 0xFF");
  91
  92int ql4xenablemd = 1;
  93module_param(ql4xenablemd, int, S_IRUGO | S_IWUSR);
  94MODULE_PARM_DESC(ql4xenablemd,
  95                 " Set to enable minidump.\n"
  96                 "\t\t  0 - disable minidump\n"
  97                 "\t\t  1 - enable minidump (Default)");
  98
  99static int qla4xxx_wait_for_hba_online(struct scsi_qla_host *ha);
 100/*
 101 * SCSI host template entry points
 102 */
 103static void qla4xxx_config_dma_addressing(struct scsi_qla_host *ha);
 104
 105/*
 106 * iSCSI template entry points
 107 */
 108static int qla4xxx_session_get_param(struct iscsi_cls_session *cls_sess,
 109                                     enum iscsi_param param, char *buf);
 110static int qla4xxx_conn_get_param(struct iscsi_cls_conn *conn,
 111                                  enum iscsi_param param, char *buf);
 112static int qla4xxx_host_get_param(struct Scsi_Host *shost,
 113                                  enum iscsi_host_param param, char *buf);
 114static int qla4xxx_iface_set_param(struct Scsi_Host *shost, void *data,
 115                                   uint32_t len);
 116static int qla4xxx_get_iface_param(struct iscsi_iface *iface,
 117                                   enum iscsi_param_type param_type,
 118                                   int param, char *buf);
 119static enum blk_eh_timer_return qla4xxx_eh_cmd_timed_out(struct scsi_cmnd *sc);
 120static struct iscsi_endpoint *qla4xxx_ep_connect(struct Scsi_Host *shost,
 121                                                 struct sockaddr *dst_addr,
 122                                                 int non_blocking);
 123static int qla4xxx_ep_poll(struct iscsi_endpoint *ep, int timeout_ms);
 124static void qla4xxx_ep_disconnect(struct iscsi_endpoint *ep);
 125static int qla4xxx_get_ep_param(struct iscsi_endpoint *ep,
 126                                enum iscsi_param param, char *buf);
 127static int qla4xxx_conn_start(struct iscsi_cls_conn *conn);
 128static struct iscsi_cls_conn *
 129qla4xxx_conn_create(struct iscsi_cls_session *cls_sess, uint32_t conn_idx);
 130static int qla4xxx_conn_bind(struct iscsi_cls_session *cls_session,
 131                             struct iscsi_cls_conn *cls_conn,
 132                             uint64_t transport_fd, int is_leading);
 133static void qla4xxx_conn_destroy(struct iscsi_cls_conn *conn);
 134static struct iscsi_cls_session *
 135qla4xxx_session_create(struct iscsi_endpoint *ep, uint16_t cmds_max,
 136                        uint16_t qdepth, uint32_t initial_cmdsn);
 137static void qla4xxx_session_destroy(struct iscsi_cls_session *sess);
 138static void qla4xxx_task_work(struct work_struct *wdata);
 139static int qla4xxx_alloc_pdu(struct iscsi_task *, uint8_t);
 140static int qla4xxx_task_xmit(struct iscsi_task *);
 141static void qla4xxx_task_cleanup(struct iscsi_task *);
 142static void qla4xxx_fail_session(struct iscsi_cls_session *cls_session);
 143static void qla4xxx_conn_get_stats(struct iscsi_cls_conn *cls_conn,
 144                                   struct iscsi_stats *stats);
 145static int qla4xxx_send_ping(struct Scsi_Host *shost, uint32_t iface_num,
 146                             uint32_t iface_type, uint32_t payload_size,
 147                             uint32_t pid, struct sockaddr *dst_addr);
 148static int qla4xxx_get_chap_list(struct Scsi_Host *shost, uint16_t chap_tbl_idx,
 149                                 uint32_t *num_entries, char *buf);
 150static int qla4xxx_delete_chap(struct Scsi_Host *shost, uint16_t chap_tbl_idx);
 151static int qla4xxx_set_chap_entry(struct Scsi_Host *shost, void  *data,
 152                                  int len);
 153static int qla4xxx_get_host_stats(struct Scsi_Host *shost, char *buf, int len);
 154
 155/*
 156 * SCSI host template entry points
 157 */
 158static int qla4xxx_queuecommand(struct Scsi_Host *h, struct scsi_cmnd *cmd);
 159static int qla4xxx_eh_abort(struct scsi_cmnd *cmd);
 160static int qla4xxx_eh_device_reset(struct scsi_cmnd *cmd);
 161static int qla4xxx_eh_target_reset(struct scsi_cmnd *cmd);
 162static int qla4xxx_eh_host_reset(struct scsi_cmnd *cmd);
 163static int qla4xxx_slave_alloc(struct scsi_device *device);
 164static umode_t qla4_attr_is_visible(int param_type, int param);
 165static int qla4xxx_host_reset(struct Scsi_Host *shost, int reset_type);
 166
 167/*
 168 * iSCSI Flash DDB sysfs entry points
 169 */
 170static int
 171qla4xxx_sysfs_ddb_set_param(struct iscsi_bus_flash_session *fnode_sess,
 172                            struct iscsi_bus_flash_conn *fnode_conn,
 173                            void *data, int len);
 174static int
 175qla4xxx_sysfs_ddb_get_param(struct iscsi_bus_flash_session *fnode_sess,
 176                            int param, char *buf);
 177static int qla4xxx_sysfs_ddb_add(struct Scsi_Host *shost, const char *buf,
 178                                 int len);
 179static int
 180qla4xxx_sysfs_ddb_delete(struct iscsi_bus_flash_session *fnode_sess);
 181static int qla4xxx_sysfs_ddb_login(struct iscsi_bus_flash_session *fnode_sess,
 182                                   struct iscsi_bus_flash_conn *fnode_conn);
 183static int qla4xxx_sysfs_ddb_logout(struct iscsi_bus_flash_session *fnode_sess,
 184                                    struct iscsi_bus_flash_conn *fnode_conn);
 185static int qla4xxx_sysfs_ddb_logout_sid(struct iscsi_cls_session *cls_sess);
 186
 187static struct qla4_8xxx_legacy_intr_set legacy_intr[] =
 188    QLA82XX_LEGACY_INTR_CONFIG;
 189
 190static const uint32_t qla4_82xx_reg_tbl[] = {
 191        QLA82XX_PEG_HALT_STATUS1,
 192        QLA82XX_PEG_HALT_STATUS2,
 193        QLA82XX_PEG_ALIVE_COUNTER,
 194        QLA82XX_CRB_DRV_ACTIVE,
 195        QLA82XX_CRB_DEV_STATE,
 196        QLA82XX_CRB_DRV_STATE,
 197        QLA82XX_CRB_DRV_SCRATCH,
 198        QLA82XX_CRB_DEV_PART_INFO,
 199        QLA82XX_CRB_DRV_IDC_VERSION,
 200        QLA82XX_FW_VERSION_MAJOR,
 201        QLA82XX_FW_VERSION_MINOR,
 202        QLA82XX_FW_VERSION_SUB,
 203        CRB_CMDPEG_STATE,
 204        CRB_TEMP_STATE,
 205};
 206
 207static const uint32_t qla4_83xx_reg_tbl[] = {
 208        QLA83XX_PEG_HALT_STATUS1,
 209        QLA83XX_PEG_HALT_STATUS2,
 210        QLA83XX_PEG_ALIVE_COUNTER,
 211        QLA83XX_CRB_DRV_ACTIVE,
 212        QLA83XX_CRB_DEV_STATE,
 213        QLA83XX_CRB_DRV_STATE,
 214        QLA83XX_CRB_DRV_SCRATCH,
 215        QLA83XX_CRB_DEV_PART_INFO1,
 216        QLA83XX_CRB_IDC_VER_MAJOR,
 217        QLA83XX_FW_VER_MAJOR,
 218        QLA83XX_FW_VER_MINOR,
 219        QLA83XX_FW_VER_SUB,
 220        QLA83XX_CMDPEG_STATE,
 221        QLA83XX_ASIC_TEMP,
 222};
 223
 224static struct scsi_host_template qla4xxx_driver_template = {
 225        .module                 = THIS_MODULE,
 226        .name                   = DRIVER_NAME,
 227        .proc_name              = DRIVER_NAME,
 228        .queuecommand           = qla4xxx_queuecommand,
 229
 230        .eh_abort_handler       = qla4xxx_eh_abort,
 231        .eh_device_reset_handler = qla4xxx_eh_device_reset,
 232        .eh_target_reset_handler = qla4xxx_eh_target_reset,
 233        .eh_host_reset_handler  = qla4xxx_eh_host_reset,
 234        .eh_timed_out           = qla4xxx_eh_cmd_timed_out,
 235
 236        .slave_alloc            = qla4xxx_slave_alloc,
 237        .change_queue_depth     = scsi_change_queue_depth,
 238
 239        .this_id                = -1,
 240        .cmd_per_lun            = 3,
 241        .sg_tablesize           = SG_ALL,
 242
 243        .max_sectors            = 0xFFFF,
 244        .shost_groups           = qla4xxx_host_groups,
 245        .host_reset             = qla4xxx_host_reset,
 246        .vendor_id              = SCSI_NL_VID_TYPE_PCI | PCI_VENDOR_ID_QLOGIC,
 247};
 248
 249static struct iscsi_transport qla4xxx_iscsi_transport = {
 250        .owner                  = THIS_MODULE,
 251        .name                   = DRIVER_NAME,
 252        .caps                   = CAP_TEXT_NEGO |
 253                                  CAP_DATA_PATH_OFFLOAD | CAP_HDRDGST |
 254                                  CAP_DATADGST | CAP_LOGIN_OFFLOAD |
 255                                  CAP_MULTI_R2T,
 256        .attr_is_visible        = qla4_attr_is_visible,
 257        .create_session         = qla4xxx_session_create,
 258        .destroy_session        = qla4xxx_session_destroy,
 259        .start_conn             = qla4xxx_conn_start,
 260        .create_conn            = qla4xxx_conn_create,
 261        .bind_conn              = qla4xxx_conn_bind,
 262        .unbind_conn            = iscsi_conn_unbind,
 263        .stop_conn              = iscsi_conn_stop,
 264        .destroy_conn           = qla4xxx_conn_destroy,
 265        .set_param              = iscsi_set_param,
 266        .get_conn_param         = qla4xxx_conn_get_param,
 267        .get_session_param      = qla4xxx_session_get_param,
 268        .get_ep_param           = qla4xxx_get_ep_param,
 269        .ep_connect             = qla4xxx_ep_connect,
 270        .ep_poll                = qla4xxx_ep_poll,
 271        .ep_disconnect          = qla4xxx_ep_disconnect,
 272        .get_stats              = qla4xxx_conn_get_stats,
 273        .send_pdu               = iscsi_conn_send_pdu,
 274        .xmit_task              = qla4xxx_task_xmit,
 275        .cleanup_task           = qla4xxx_task_cleanup,
 276        .alloc_pdu              = qla4xxx_alloc_pdu,
 277
 278        .get_host_param         = qla4xxx_host_get_param,
 279        .set_iface_param        = qla4xxx_iface_set_param,
 280        .get_iface_param        = qla4xxx_get_iface_param,
 281        .bsg_request            = qla4xxx_bsg_request,
 282        .send_ping              = qla4xxx_send_ping,
 283        .get_chap               = qla4xxx_get_chap_list,
 284        .delete_chap            = qla4xxx_delete_chap,
 285        .set_chap               = qla4xxx_set_chap_entry,
 286        .get_flashnode_param    = qla4xxx_sysfs_ddb_get_param,
 287        .set_flashnode_param    = qla4xxx_sysfs_ddb_set_param,
 288        .new_flashnode          = qla4xxx_sysfs_ddb_add,
 289        .del_flashnode          = qla4xxx_sysfs_ddb_delete,
 290        .login_flashnode        = qla4xxx_sysfs_ddb_login,
 291        .logout_flashnode       = qla4xxx_sysfs_ddb_logout,
 292        .logout_flashnode_sid   = qla4xxx_sysfs_ddb_logout_sid,
 293        .get_host_stats         = qla4xxx_get_host_stats,
 294};
 295
 296static struct scsi_transport_template *qla4xxx_scsi_transport;
 297
 298static int qla4xxx_isp_check_reg(struct scsi_qla_host *ha)
 299{
 300        u32 reg_val = 0;
 301        int rval = QLA_SUCCESS;
 302
 303        if (is_qla8022(ha))
 304                reg_val = readl(&ha->qla4_82xx_reg->host_status);
 305        else if (is_qla8032(ha) || is_qla8042(ha))
 306                reg_val = qla4_8xxx_rd_direct(ha, QLA8XXX_PEG_ALIVE_COUNTER);
 307        else
 308                reg_val = readw(&ha->reg->ctrl_status);
 309
 310        if (reg_val == QL4_ISP_REG_DISCONNECT)
 311                rval = QLA_ERROR;
 312
 313        return rval;
 314}
 315
 316static int qla4xxx_send_ping(struct Scsi_Host *shost, uint32_t iface_num,
 317                             uint32_t iface_type, uint32_t payload_size,
 318                             uint32_t pid, struct sockaddr *dst_addr)
 319{
 320        struct scsi_qla_host *ha = to_qla_host(shost);
 321        struct sockaddr_in *addr;
 322        struct sockaddr_in6 *addr6;
 323        uint32_t options = 0;
 324        uint8_t ipaddr[IPv6_ADDR_LEN];
 325        int rval;
 326
 327        memset(ipaddr, 0, IPv6_ADDR_LEN);
 328        /* IPv4 to IPv4 */
 329        if ((iface_type == ISCSI_IFACE_TYPE_IPV4) &&
 330            (dst_addr->sa_family == AF_INET)) {
 331                addr = (struct sockaddr_in *)dst_addr;
 332                memcpy(ipaddr, &addr->sin_addr.s_addr, IP_ADDR_LEN);
 333                DEBUG2(ql4_printk(KERN_INFO, ha, "%s: IPv4 Ping src: %pI4 "
 334                                  "dest: %pI4\n", __func__,
 335                                  &ha->ip_config.ip_address, ipaddr));
 336                rval = qla4xxx_ping_iocb(ha, options, payload_size, pid,
 337                                         ipaddr);
 338                if (rval)
 339                        rval = -EINVAL;
 340        } else if ((iface_type == ISCSI_IFACE_TYPE_IPV6) &&
 341                   (dst_addr->sa_family == AF_INET6)) {
 342                /* IPv6 to IPv6 */
 343                addr6 = (struct sockaddr_in6 *)dst_addr;
 344                memcpy(ipaddr, &addr6->sin6_addr.in6_u.u6_addr8, IPv6_ADDR_LEN);
 345
 346                options |= PING_IPV6_PROTOCOL_ENABLE;
 347
 348                /* Ping using LinkLocal address */
 349                if ((iface_num == 0) || (iface_num == 1)) {
 350                        DEBUG2(ql4_printk(KERN_INFO, ha, "%s: LinkLocal Ping "
 351                                          "src: %pI6 dest: %pI6\n", __func__,
 352                                          &ha->ip_config.ipv6_link_local_addr,
 353                                          ipaddr));
 354                        options |= PING_IPV6_LINKLOCAL_ADDR;
 355                        rval = qla4xxx_ping_iocb(ha, options, payload_size,
 356                                                 pid, ipaddr);
 357                } else {
 358                        ql4_printk(KERN_WARNING, ha, "%s: iface num = %d "
 359                                   "not supported\n", __func__, iface_num);
 360                        rval = -ENOSYS;
 361                        goto exit_send_ping;
 362                }
 363
 364                /*
 365                 * If ping using LinkLocal address fails, try ping using
 366                 * IPv6 address
 367                 */
 368                if (rval != QLA_SUCCESS) {
 369                        options &= ~PING_IPV6_LINKLOCAL_ADDR;
 370                        if (iface_num == 0) {
 371                                options |= PING_IPV6_ADDR0;
 372                                DEBUG2(ql4_printk(KERN_INFO, ha, "%s: IPv6 "
 373                                                  "Ping src: %pI6 "
 374                                                  "dest: %pI6\n", __func__,
 375                                                  &ha->ip_config.ipv6_addr0,
 376                                                  ipaddr));
 377                        } else if (iface_num == 1) {
 378                                options |= PING_IPV6_ADDR1;
 379                                DEBUG2(ql4_printk(KERN_INFO, ha, "%s: IPv6 "
 380                                                  "Ping src: %pI6 "
 381                                                  "dest: %pI6\n", __func__,
 382                                                  &ha->ip_config.ipv6_addr1,
 383                                                  ipaddr));
 384                        }
 385                        rval = qla4xxx_ping_iocb(ha, options, payload_size,
 386                                                 pid, ipaddr);
 387                        if (rval)
 388                                rval = -EINVAL;
 389                }
 390        } else
 391                rval = -ENOSYS;
 392exit_send_ping:
 393        return rval;
 394}
 395
 396static umode_t qla4_attr_is_visible(int param_type, int param)
 397{
 398        switch (param_type) {
 399        case ISCSI_HOST_PARAM:
 400                switch (param) {
 401                case ISCSI_HOST_PARAM_HWADDRESS:
 402                case ISCSI_HOST_PARAM_IPADDRESS:
 403                case ISCSI_HOST_PARAM_INITIATOR_NAME:
 404                case ISCSI_HOST_PARAM_PORT_STATE:
 405                case ISCSI_HOST_PARAM_PORT_SPEED:
 406                        return S_IRUGO;
 407                default:
 408                        return 0;
 409                }
 410        case ISCSI_PARAM:
 411                switch (param) {
 412                case ISCSI_PARAM_PERSISTENT_ADDRESS:
 413                case ISCSI_PARAM_PERSISTENT_PORT:
 414                case ISCSI_PARAM_CONN_ADDRESS:
 415                case ISCSI_PARAM_CONN_PORT:
 416                case ISCSI_PARAM_TARGET_NAME:
 417                case ISCSI_PARAM_TPGT:
 418                case ISCSI_PARAM_TARGET_ALIAS:
 419                case ISCSI_PARAM_MAX_BURST:
 420                case ISCSI_PARAM_MAX_R2T:
 421                case ISCSI_PARAM_FIRST_BURST:
 422                case ISCSI_PARAM_MAX_RECV_DLENGTH:
 423                case ISCSI_PARAM_MAX_XMIT_DLENGTH:
 424                case ISCSI_PARAM_IFACE_NAME:
 425                case ISCSI_PARAM_CHAP_OUT_IDX:
 426                case ISCSI_PARAM_CHAP_IN_IDX:
 427                case ISCSI_PARAM_USERNAME:
 428                case ISCSI_PARAM_PASSWORD:
 429                case ISCSI_PARAM_USERNAME_IN:
 430                case ISCSI_PARAM_PASSWORD_IN:
 431                case ISCSI_PARAM_AUTO_SND_TGT_DISABLE:
 432                case ISCSI_PARAM_DISCOVERY_SESS:
 433                case ISCSI_PARAM_PORTAL_TYPE:
 434                case ISCSI_PARAM_CHAP_AUTH_EN:
 435                case ISCSI_PARAM_DISCOVERY_LOGOUT_EN:
 436                case ISCSI_PARAM_BIDI_CHAP_EN:
 437                case ISCSI_PARAM_DISCOVERY_AUTH_OPTIONAL:
 438                case ISCSI_PARAM_DEF_TIME2WAIT:
 439                case ISCSI_PARAM_DEF_TIME2RETAIN:
 440                case ISCSI_PARAM_HDRDGST_EN:
 441                case ISCSI_PARAM_DATADGST_EN:
 442                case ISCSI_PARAM_INITIAL_R2T_EN:
 443                case ISCSI_PARAM_IMM_DATA_EN:
 444                case ISCSI_PARAM_PDU_INORDER_EN:
 445                case ISCSI_PARAM_DATASEQ_INORDER_EN:
 446                case ISCSI_PARAM_MAX_SEGMENT_SIZE:
 447                case ISCSI_PARAM_TCP_TIMESTAMP_STAT:
 448                case ISCSI_PARAM_TCP_WSF_DISABLE:
 449                case ISCSI_PARAM_TCP_NAGLE_DISABLE:
 450                case ISCSI_PARAM_TCP_TIMER_SCALE:
 451                case ISCSI_PARAM_TCP_TIMESTAMP_EN:
 452                case ISCSI_PARAM_TCP_XMIT_WSF:
 453                case ISCSI_PARAM_TCP_RECV_WSF:
 454                case ISCSI_PARAM_IP_FRAGMENT_DISABLE:
 455                case ISCSI_PARAM_IPV4_TOS:
 456                case ISCSI_PARAM_IPV6_TC:
 457                case ISCSI_PARAM_IPV6_FLOW_LABEL:
 458                case ISCSI_PARAM_IS_FW_ASSIGNED_IPV6:
 459                case ISCSI_PARAM_KEEPALIVE_TMO:
 460                case ISCSI_PARAM_LOCAL_PORT:
 461                case ISCSI_PARAM_ISID:
 462                case ISCSI_PARAM_TSID:
 463                case ISCSI_PARAM_DEF_TASKMGMT_TMO:
 464                case ISCSI_PARAM_ERL:
 465                case ISCSI_PARAM_STATSN:
 466                case ISCSI_PARAM_EXP_STATSN:
 467                case ISCSI_PARAM_DISCOVERY_PARENT_IDX:
 468                case ISCSI_PARAM_DISCOVERY_PARENT_TYPE:
 469                case ISCSI_PARAM_LOCAL_IPADDR:
 470                        return S_IRUGO;
 471                default:
 472                        return 0;
 473                }
 474        case ISCSI_NET_PARAM:
 475                switch (param) {
 476                case ISCSI_NET_PARAM_IPV4_ADDR:
 477                case ISCSI_NET_PARAM_IPV4_SUBNET:
 478                case ISCSI_NET_PARAM_IPV4_GW:
 479                case ISCSI_NET_PARAM_IPV4_BOOTPROTO:
 480                case ISCSI_NET_PARAM_IFACE_ENABLE:
 481                case ISCSI_NET_PARAM_IPV6_LINKLOCAL:
 482                case ISCSI_NET_PARAM_IPV6_ADDR:
 483                case ISCSI_NET_PARAM_IPV6_ROUTER:
 484                case ISCSI_NET_PARAM_IPV6_ADDR_AUTOCFG:
 485                case ISCSI_NET_PARAM_IPV6_LINKLOCAL_AUTOCFG:
 486                case ISCSI_NET_PARAM_VLAN_ID:
 487                case ISCSI_NET_PARAM_VLAN_PRIORITY:
 488                case ISCSI_NET_PARAM_VLAN_ENABLED:
 489                case ISCSI_NET_PARAM_MTU:
 490                case ISCSI_NET_PARAM_PORT:
 491                case ISCSI_NET_PARAM_IPADDR_STATE:
 492                case ISCSI_NET_PARAM_IPV6_LINKLOCAL_STATE:
 493                case ISCSI_NET_PARAM_IPV6_ROUTER_STATE:
 494                case ISCSI_NET_PARAM_DELAYED_ACK_EN:
 495                case ISCSI_NET_PARAM_TCP_NAGLE_DISABLE:
 496                case ISCSI_NET_PARAM_TCP_WSF_DISABLE:
 497                case ISCSI_NET_PARAM_TCP_WSF:
 498                case ISCSI_NET_PARAM_TCP_TIMER_SCALE:
 499                case ISCSI_NET_PARAM_TCP_TIMESTAMP_EN:
 500                case ISCSI_NET_PARAM_CACHE_ID:
 501                case ISCSI_NET_PARAM_IPV4_DHCP_DNS_ADDR_EN:
 502                case ISCSI_NET_PARAM_IPV4_DHCP_SLP_DA_EN:
 503                case ISCSI_NET_PARAM_IPV4_TOS_EN:
 504                case ISCSI_NET_PARAM_IPV4_TOS:
 505                case ISCSI_NET_PARAM_IPV4_GRAT_ARP_EN:
 506                case ISCSI_NET_PARAM_IPV4_DHCP_ALT_CLIENT_ID_EN:
 507                case ISCSI_NET_PARAM_IPV4_DHCP_ALT_CLIENT_ID:
 508                case ISCSI_NET_PARAM_IPV4_DHCP_REQ_VENDOR_ID_EN:
 509                case ISCSI_NET_PARAM_IPV4_DHCP_USE_VENDOR_ID_EN:
 510                case ISCSI_NET_PARAM_IPV4_DHCP_VENDOR_ID:
 511                case ISCSI_NET_PARAM_IPV4_DHCP_LEARN_IQN_EN:
 512                case ISCSI_NET_PARAM_IPV4_FRAGMENT_DISABLE:
 513                case ISCSI_NET_PARAM_IPV4_IN_FORWARD_EN:
 514                case ISCSI_NET_PARAM_REDIRECT_EN:
 515                case ISCSI_NET_PARAM_IPV4_TTL:
 516                case ISCSI_NET_PARAM_IPV6_GRAT_NEIGHBOR_ADV_EN:
 517                case ISCSI_NET_PARAM_IPV6_MLD_EN:
 518                case ISCSI_NET_PARAM_IPV6_FLOW_LABEL:
 519                case ISCSI_NET_PARAM_IPV6_TRAFFIC_CLASS:
 520                case ISCSI_NET_PARAM_IPV6_HOP_LIMIT:
 521                case ISCSI_NET_PARAM_IPV6_ND_REACHABLE_TMO:
 522                case ISCSI_NET_PARAM_IPV6_ND_REXMIT_TIME:
 523                case ISCSI_NET_PARAM_IPV6_ND_STALE_TMO:
 524                case ISCSI_NET_PARAM_IPV6_DUP_ADDR_DETECT_CNT:
 525                case ISCSI_NET_PARAM_IPV6_RTR_ADV_LINK_MTU:
 526                        return S_IRUGO;
 527                default:
 528                        return 0;
 529                }
 530        case ISCSI_IFACE_PARAM:
 531                switch (param) {
 532                case ISCSI_IFACE_PARAM_DEF_TASKMGMT_TMO:
 533                case ISCSI_IFACE_PARAM_HDRDGST_EN:
 534                case ISCSI_IFACE_PARAM_DATADGST_EN:
 535                case ISCSI_IFACE_PARAM_IMM_DATA_EN:
 536                case ISCSI_IFACE_PARAM_INITIAL_R2T_EN:
 537                case ISCSI_IFACE_PARAM_DATASEQ_INORDER_EN:
 538                case ISCSI_IFACE_PARAM_PDU_INORDER_EN:
 539                case ISCSI_IFACE_PARAM_ERL:
 540                case ISCSI_IFACE_PARAM_MAX_RECV_DLENGTH:
 541                case ISCSI_IFACE_PARAM_FIRST_BURST:
 542                case ISCSI_IFACE_PARAM_MAX_R2T:
 543                case ISCSI_IFACE_PARAM_MAX_BURST:
 544                case ISCSI_IFACE_PARAM_CHAP_AUTH_EN:
 545                case ISCSI_IFACE_PARAM_BIDI_CHAP_EN:
 546                case ISCSI_IFACE_PARAM_DISCOVERY_AUTH_OPTIONAL:
 547                case ISCSI_IFACE_PARAM_DISCOVERY_LOGOUT_EN:
 548                case ISCSI_IFACE_PARAM_STRICT_LOGIN_COMP_EN:
 549                case ISCSI_IFACE_PARAM_INITIATOR_NAME:
 550                        return S_IRUGO;
 551                default:
 552                        return 0;
 553                }
 554        case ISCSI_FLASHNODE_PARAM:
 555                switch (param) {
 556                case ISCSI_FLASHNODE_IS_FW_ASSIGNED_IPV6:
 557                case ISCSI_FLASHNODE_PORTAL_TYPE:
 558                case ISCSI_FLASHNODE_AUTO_SND_TGT_DISABLE:
 559                case ISCSI_FLASHNODE_DISCOVERY_SESS:
 560                case ISCSI_FLASHNODE_ENTRY_EN:
 561                case ISCSI_FLASHNODE_HDR_DGST_EN:
 562                case ISCSI_FLASHNODE_DATA_DGST_EN:
 563                case ISCSI_FLASHNODE_IMM_DATA_EN:
 564                case ISCSI_FLASHNODE_INITIAL_R2T_EN:
 565                case ISCSI_FLASHNODE_DATASEQ_INORDER:
 566                case ISCSI_FLASHNODE_PDU_INORDER:
 567                case ISCSI_FLASHNODE_CHAP_AUTH_EN:
 568                case ISCSI_FLASHNODE_SNACK_REQ_EN:
 569                case ISCSI_FLASHNODE_DISCOVERY_LOGOUT_EN:
 570                case ISCSI_FLASHNODE_BIDI_CHAP_EN:
 571                case ISCSI_FLASHNODE_DISCOVERY_AUTH_OPTIONAL:
 572                case ISCSI_FLASHNODE_ERL:
 573                case ISCSI_FLASHNODE_TCP_TIMESTAMP_STAT:
 574                case ISCSI_FLASHNODE_TCP_NAGLE_DISABLE:
 575                case ISCSI_FLASHNODE_TCP_WSF_DISABLE:
 576                case ISCSI_FLASHNODE_TCP_TIMER_SCALE:
 577                case ISCSI_FLASHNODE_TCP_TIMESTAMP_EN:
 578                case ISCSI_FLASHNODE_IP_FRAG_DISABLE:
 579                case ISCSI_FLASHNODE_MAX_RECV_DLENGTH:
 580                case ISCSI_FLASHNODE_MAX_XMIT_DLENGTH:
 581                case ISCSI_FLASHNODE_FIRST_BURST:
 582                case ISCSI_FLASHNODE_DEF_TIME2WAIT:
 583                case ISCSI_FLASHNODE_DEF_TIME2RETAIN:
 584                case ISCSI_FLASHNODE_MAX_R2T:
 585                case ISCSI_FLASHNODE_KEEPALIVE_TMO:
 586                case ISCSI_FLASHNODE_ISID:
 587                case ISCSI_FLASHNODE_TSID:
 588                case ISCSI_FLASHNODE_PORT:
 589                case ISCSI_FLASHNODE_MAX_BURST:
 590                case ISCSI_FLASHNODE_DEF_TASKMGMT_TMO:
 591                case ISCSI_FLASHNODE_IPADDR:
 592                case ISCSI_FLASHNODE_ALIAS:
 593                case ISCSI_FLASHNODE_REDIRECT_IPADDR:
 594                case ISCSI_FLASHNODE_MAX_SEGMENT_SIZE:
 595                case ISCSI_FLASHNODE_LOCAL_PORT:
 596                case ISCSI_FLASHNODE_IPV4_TOS:
 597                case ISCSI_FLASHNODE_IPV6_TC:
 598                case ISCSI_FLASHNODE_IPV6_FLOW_LABEL:
 599                case ISCSI_FLASHNODE_NAME:
 600                case ISCSI_FLASHNODE_TPGT:
 601                case ISCSI_FLASHNODE_LINK_LOCAL_IPV6:
 602                case ISCSI_FLASHNODE_DISCOVERY_PARENT_IDX:
 603                case ISCSI_FLASHNODE_DISCOVERY_PARENT_TYPE:
 604                case ISCSI_FLASHNODE_TCP_XMIT_WSF:
 605                case ISCSI_FLASHNODE_TCP_RECV_WSF:
 606                case ISCSI_FLASHNODE_CHAP_OUT_IDX:
 607                case ISCSI_FLASHNODE_USERNAME:
 608                case ISCSI_FLASHNODE_PASSWORD:
 609                case ISCSI_FLASHNODE_STATSN:
 610                case ISCSI_FLASHNODE_EXP_STATSN:
 611                case ISCSI_FLASHNODE_IS_BOOT_TGT:
 612                        return S_IRUGO;
 613                default:
 614                        return 0;
 615                }
 616        }
 617
 618        return 0;
 619}
 620
 621/**
 622 * qla4xxx_create_chap_list - Create CHAP list from FLASH
 623 * @ha: pointer to adapter structure
 624 *
 625 * Read flash and make a list of CHAP entries, during login when a CHAP entry
 626 * is received, it will be checked in this list. If entry exist then the CHAP
 627 * entry index is set in the DDB. If CHAP entry does not exist in this list
 628 * then a new entry is added in FLASH in CHAP table and the index obtained is
 629 * used in the DDB.
 630 **/
 631static void qla4xxx_create_chap_list(struct scsi_qla_host *ha)
 632{
 633        int rval = 0;
 634        uint8_t *chap_flash_data = NULL;
 635        uint32_t offset;
 636        dma_addr_t chap_dma;
 637        uint32_t chap_size = 0;
 638
 639        if (is_qla40XX(ha))
 640                chap_size = MAX_CHAP_ENTRIES_40XX *
 641                            sizeof(struct ql4_chap_table);
 642        else    /* Single region contains CHAP info for both
 643                 * ports which is divided into half for each port.
 644                 */
 645                chap_size = ha->hw.flt_chap_size / 2;
 646
 647        chap_flash_data = dma_alloc_coherent(&ha->pdev->dev, chap_size,
 648                                             &chap_dma, GFP_KERNEL);
 649        if (!chap_flash_data) {
 650                ql4_printk(KERN_ERR, ha, "No memory for chap_flash_data\n");
 651                return;
 652        }
 653
 654        if (is_qla40XX(ha)) {
 655                offset = FLASH_CHAP_OFFSET;
 656        } else {
 657                offset = FLASH_RAW_ACCESS_ADDR + (ha->hw.flt_region_chap << 2);
 658                if (ha->port_num == 1)
 659                        offset += chap_size;
 660        }
 661
 662        rval = qla4xxx_get_flash(ha, chap_dma, offset, chap_size);
 663        if (rval != QLA_SUCCESS)
 664                goto exit_chap_list;
 665
 666        if (ha->chap_list == NULL)
 667                ha->chap_list = vmalloc(chap_size);
 668        if (ha->chap_list == NULL) {
 669                ql4_printk(KERN_ERR, ha, "No memory for ha->chap_list\n");
 670                goto exit_chap_list;
 671        }
 672
 673        memset(ha->chap_list, 0, chap_size);
 674        memcpy(ha->chap_list, chap_flash_data, chap_size);
 675
 676exit_chap_list:
 677        dma_free_coherent(&ha->pdev->dev, chap_size, chap_flash_data, chap_dma);
 678}
 679
 680static int qla4xxx_get_chap_by_index(struct scsi_qla_host *ha,
 681                                     int16_t chap_index,
 682                                     struct ql4_chap_table **chap_entry)
 683{
 684        int rval = QLA_ERROR;
 685        int max_chap_entries;
 686
 687        if (!ha->chap_list) {
 688                ql4_printk(KERN_ERR, ha, "CHAP table cache is empty!\n");
 689                goto exit_get_chap;
 690        }
 691
 692        if (is_qla80XX(ha))
 693                max_chap_entries = (ha->hw.flt_chap_size / 2) /
 694                                   sizeof(struct ql4_chap_table);
 695        else
 696                max_chap_entries = MAX_CHAP_ENTRIES_40XX;
 697
 698        if (chap_index > max_chap_entries) {
 699                ql4_printk(KERN_ERR, ha, "Invalid Chap index\n");
 700                goto exit_get_chap;
 701        }
 702
 703        *chap_entry = (struct ql4_chap_table *)ha->chap_list + chap_index;
 704        if ((*chap_entry)->cookie !=
 705             cpu_to_le16(CHAP_VALID_COOKIE)) {
 706                *chap_entry = NULL;
 707        } else {
 708                rval = QLA_SUCCESS;
 709        }
 710
 711exit_get_chap:
 712        return rval;
 713}
 714
 715/**
 716 * qla4xxx_find_free_chap_index - Find the first free chap index
 717 * @ha: pointer to adapter structure
 718 * @chap_index: CHAP index to be returned
 719 *
 720 * Find the first free chap index available in the chap table
 721 *
 722 * Note: Caller should acquire the chap lock before getting here.
 723 **/
 724static int qla4xxx_find_free_chap_index(struct scsi_qla_host *ha,
 725                                        uint16_t *chap_index)
 726{
 727        int i, rval;
 728        int free_index = -1;
 729        int max_chap_entries = 0;
 730        struct ql4_chap_table *chap_table;
 731
 732        if (is_qla80XX(ha))
 733                max_chap_entries = (ha->hw.flt_chap_size / 2) /
 734                                                sizeof(struct ql4_chap_table);
 735        else
 736                max_chap_entries = MAX_CHAP_ENTRIES_40XX;
 737
 738        if (!ha->chap_list) {
 739                ql4_printk(KERN_ERR, ha, "CHAP table cache is empty!\n");
 740                rval = QLA_ERROR;
 741                goto exit_find_chap;
 742        }
 743
 744        for (i = 0; i < max_chap_entries; i++) {
 745                chap_table = (struct ql4_chap_table *)ha->chap_list + i;
 746
 747                if ((chap_table->cookie !=
 748                    cpu_to_le16(CHAP_VALID_COOKIE)) &&
 749                   (i > MAX_RESRV_CHAP_IDX)) {
 750                                free_index = i;
 751                                break;
 752                }
 753        }
 754
 755        if (free_index != -1) {
 756                *chap_index = free_index;
 757                rval = QLA_SUCCESS;
 758        } else {
 759                rval = QLA_ERROR;
 760        }
 761
 762exit_find_chap:
 763        return rval;
 764}
 765
 766static int qla4xxx_get_chap_list(struct Scsi_Host *shost, uint16_t chap_tbl_idx,
 767                                  uint32_t *num_entries, char *buf)
 768{
 769        struct scsi_qla_host *ha = to_qla_host(shost);
 770        struct ql4_chap_table *chap_table;
 771        struct iscsi_chap_rec *chap_rec;
 772        int max_chap_entries = 0;
 773        int valid_chap_entries = 0;
 774        int ret = 0, i;
 775
 776        if (is_qla80XX(ha))
 777                max_chap_entries = (ha->hw.flt_chap_size / 2) /
 778                                        sizeof(struct ql4_chap_table);
 779        else
 780                max_chap_entries = MAX_CHAP_ENTRIES_40XX;
 781
 782        ql4_printk(KERN_INFO, ha, "%s: num_entries = %d, CHAP idx = %d\n",
 783                        __func__, *num_entries, chap_tbl_idx);
 784
 785        if (!buf) {
 786                ret = -ENOMEM;
 787                goto exit_get_chap_list;
 788        }
 789
 790        qla4xxx_create_chap_list(ha);
 791
 792        chap_rec = (struct iscsi_chap_rec *) buf;
 793        mutex_lock(&ha->chap_sem);
 794        for (i = chap_tbl_idx; i < max_chap_entries; i++) {
 795                chap_table = (struct ql4_chap_table *)ha->chap_list + i;
 796                if (chap_table->cookie !=
 797                    cpu_to_le16(CHAP_VALID_COOKIE))
 798                        continue;
 799
 800                chap_rec->chap_tbl_idx = i;
 801                strlcpy(chap_rec->username, chap_table->name,
 802                        ISCSI_CHAP_AUTH_NAME_MAX_LEN);
 803                strlcpy(chap_rec->password, chap_table->secret,
 804                        QL4_CHAP_MAX_SECRET_LEN);
 805                chap_rec->password_length = chap_table->secret_len;
 806
 807                if (chap_table->flags & BIT_7) /* local */
 808                        chap_rec->chap_type = CHAP_TYPE_OUT;
 809
 810                if (chap_table->flags & BIT_6) /* peer */
 811                        chap_rec->chap_type = CHAP_TYPE_IN;
 812
 813                chap_rec++;
 814
 815                valid_chap_entries++;
 816                if (valid_chap_entries == *num_entries)
 817                        break;
 818        }
 819        mutex_unlock(&ha->chap_sem);
 820
 821exit_get_chap_list:
 822        ql4_printk(KERN_INFO, ha, "%s: Valid CHAP Entries = %d\n",
 823                        __func__,  valid_chap_entries);
 824        *num_entries = valid_chap_entries;
 825        return ret;
 826}
 827
 828static int __qla4xxx_is_chap_active(struct device *dev, void *data)
 829{
 830        int ret = 0;
 831        uint16_t *chap_tbl_idx = (uint16_t *) data;
 832        struct iscsi_cls_session *cls_session;
 833        struct iscsi_session *sess;
 834        struct ddb_entry *ddb_entry;
 835
 836        if (!iscsi_is_session_dev(dev))
 837                goto exit_is_chap_active;
 838
 839        cls_session = iscsi_dev_to_session(dev);
 840        sess = cls_session->dd_data;
 841        ddb_entry = sess->dd_data;
 842
 843        if (iscsi_is_session_online(cls_session))
 844                goto exit_is_chap_active;
 845
 846        if (ddb_entry->chap_tbl_idx == *chap_tbl_idx)
 847                ret = 1;
 848
 849exit_is_chap_active:
 850        return ret;
 851}
 852
 853static int qla4xxx_is_chap_active(struct Scsi_Host *shost,
 854                                  uint16_t chap_tbl_idx)
 855{
 856        int ret = 0;
 857
 858        ret = device_for_each_child(&shost->shost_gendev, &chap_tbl_idx,
 859                                    __qla4xxx_is_chap_active);
 860
 861        return ret;
 862}
 863
 864static int qla4xxx_delete_chap(struct Scsi_Host *shost, uint16_t chap_tbl_idx)
 865{
 866        struct scsi_qla_host *ha = to_qla_host(shost);
 867        struct ql4_chap_table *chap_table;
 868        dma_addr_t chap_dma;
 869        int max_chap_entries = 0;
 870        uint32_t offset = 0;
 871        uint32_t chap_size;
 872        int ret = 0;
 873
 874        chap_table = dma_pool_zalloc(ha->chap_dma_pool, GFP_KERNEL, &chap_dma);
 875        if (chap_table == NULL)
 876                return -ENOMEM;
 877
 878        if (is_qla80XX(ha))
 879                max_chap_entries = (ha->hw.flt_chap_size / 2) /
 880                                   sizeof(struct ql4_chap_table);
 881        else
 882                max_chap_entries = MAX_CHAP_ENTRIES_40XX;
 883
 884        if (chap_tbl_idx > max_chap_entries) {
 885                ret = -EINVAL;
 886                goto exit_delete_chap;
 887        }
 888
 889        /* Check if chap index is in use.
 890         * If chap is in use don't delet chap entry */
 891        ret = qla4xxx_is_chap_active(shost, chap_tbl_idx);
 892        if (ret) {
 893                ql4_printk(KERN_INFO, ha, "CHAP entry %d is in use, cannot "
 894                           "delete from flash\n", chap_tbl_idx);
 895                ret = -EBUSY;
 896                goto exit_delete_chap;
 897        }
 898
 899        chap_size = sizeof(struct ql4_chap_table);
 900        if (is_qla40XX(ha))
 901                offset = FLASH_CHAP_OFFSET | (chap_tbl_idx * chap_size);
 902        else {
 903                offset = FLASH_RAW_ACCESS_ADDR + (ha->hw.flt_region_chap << 2);
 904                /* flt_chap_size is CHAP table size for both ports
 905                 * so divide it by 2 to calculate the offset for second port
 906                 */
 907                if (ha->port_num == 1)
 908                        offset += (ha->hw.flt_chap_size / 2);
 909                offset += (chap_tbl_idx * chap_size);
 910        }
 911
 912        ret = qla4xxx_get_flash(ha, chap_dma, offset, chap_size);
 913        if (ret != QLA_SUCCESS) {
 914                ret = -EINVAL;
 915                goto exit_delete_chap;
 916        }
 917
 918        DEBUG2(ql4_printk(KERN_INFO, ha, "Chap Cookie: x%x\n",
 919                          __le16_to_cpu(chap_table->cookie)));
 920
 921        if (__le16_to_cpu(chap_table->cookie) != CHAP_VALID_COOKIE) {
 922                ql4_printk(KERN_ERR, ha, "No valid chap entry found\n");
 923                goto exit_delete_chap;
 924        }
 925
 926        chap_table->cookie = cpu_to_le16(0xFFFF);
 927
 928        offset = FLASH_CHAP_OFFSET |
 929                        (chap_tbl_idx * sizeof(struct ql4_chap_table));
 930        ret = qla4xxx_set_flash(ha, chap_dma, offset, chap_size,
 931                                FLASH_OPT_RMW_COMMIT);
 932        if (ret == QLA_SUCCESS && ha->chap_list) {
 933                mutex_lock(&ha->chap_sem);
 934                /* Update ha chap_list cache */
 935                memcpy((struct ql4_chap_table *)ha->chap_list + chap_tbl_idx,
 936                        chap_table, sizeof(struct ql4_chap_table));
 937                mutex_unlock(&ha->chap_sem);
 938        }
 939        if (ret != QLA_SUCCESS)
 940                ret =  -EINVAL;
 941
 942exit_delete_chap:
 943        dma_pool_free(ha->chap_dma_pool, chap_table, chap_dma);
 944        return ret;
 945}
 946
 947/**
 948 * qla4xxx_set_chap_entry - Make chap entry with given information
 949 * @shost: pointer to host
 950 * @data: chap info - credentials, index and type to make chap entry
 951 * @len: length of data
 952 *
 953 * Add or update chap entry with the given information
 954 **/
 955static int qla4xxx_set_chap_entry(struct Scsi_Host *shost, void *data, int len)
 956{
 957        struct scsi_qla_host *ha = to_qla_host(shost);
 958        struct iscsi_chap_rec chap_rec;
 959        struct ql4_chap_table *chap_entry = NULL;
 960        struct iscsi_param_info *param_info;
 961        struct nlattr *attr;
 962        int max_chap_entries = 0;
 963        int type;
 964        int rem = len;
 965        int rc = 0;
 966        int size;
 967
 968        memset(&chap_rec, 0, sizeof(chap_rec));
 969
 970        nla_for_each_attr(attr, data, len, rem) {
 971                param_info = nla_data(attr);
 972
 973                switch (param_info->param) {
 974                case ISCSI_CHAP_PARAM_INDEX:
 975                        chap_rec.chap_tbl_idx = *(uint16_t *)param_info->value;
 976                        break;
 977                case ISCSI_CHAP_PARAM_CHAP_TYPE:
 978                        chap_rec.chap_type = param_info->value[0];
 979                        break;
 980                case ISCSI_CHAP_PARAM_USERNAME:
 981                        size = min_t(size_t, sizeof(chap_rec.username),
 982                                     param_info->len);
 983                        memcpy(chap_rec.username, param_info->value, size);
 984                        break;
 985                case ISCSI_CHAP_PARAM_PASSWORD:
 986                        size = min_t(size_t, sizeof(chap_rec.password),
 987                                     param_info->len);
 988                        memcpy(chap_rec.password, param_info->value, size);
 989                        break;
 990                case ISCSI_CHAP_PARAM_PASSWORD_LEN:
 991                        chap_rec.password_length = param_info->value[0];
 992                        break;
 993                default:
 994                        ql4_printk(KERN_ERR, ha,
 995                                   "%s: No such sysfs attribute\n", __func__);
 996                        rc = -ENOSYS;
 997                        goto exit_set_chap;
 998                }
 999        }
1000
1001        if (chap_rec.chap_type == CHAP_TYPE_IN)
1002                type = BIDI_CHAP;
1003        else
1004                type = LOCAL_CHAP;
1005
1006        if (is_qla80XX(ha))
1007                max_chap_entries = (ha->hw.flt_chap_size / 2) /
1008                                   sizeof(struct ql4_chap_table);
1009        else
1010                max_chap_entries = MAX_CHAP_ENTRIES_40XX;
1011
1012        mutex_lock(&ha->chap_sem);
1013        if (chap_rec.chap_tbl_idx < max_chap_entries) {
1014                rc = qla4xxx_get_chap_by_index(ha, chap_rec.chap_tbl_idx,
1015                                               &chap_entry);
1016                if (!rc) {
1017                        if (!(type == qla4xxx_get_chap_type(chap_entry))) {
1018                                ql4_printk(KERN_INFO, ha,
1019                                           "Type mismatch for CHAP entry %d\n",
1020                                           chap_rec.chap_tbl_idx);
1021                                rc = -EINVAL;
1022                                goto exit_unlock_chap;
1023                        }
1024
1025                        /* If chap index is in use then don't modify it */
1026                        rc = qla4xxx_is_chap_active(shost,
1027                                                    chap_rec.chap_tbl_idx);
1028                        if (rc) {
1029                                ql4_printk(KERN_INFO, ha,
1030                                           "CHAP entry %d is in use\n",
1031                                           chap_rec.chap_tbl_idx);
1032                                rc = -EBUSY;
1033                                goto exit_unlock_chap;
1034                        }
1035                }
1036        } else {
1037                rc = qla4xxx_find_free_chap_index(ha, &chap_rec.chap_tbl_idx);
1038                if (rc) {
1039                        ql4_printk(KERN_INFO, ha, "CHAP entry not available\n");
1040                        rc = -EBUSY;
1041                        goto exit_unlock_chap;
1042                }
1043        }
1044
1045        rc = qla4xxx_set_chap(ha, chap_rec.username, chap_rec.password,
1046                              chap_rec.chap_tbl_idx, type);
1047
1048exit_unlock_chap:
1049        mutex_unlock(&ha->chap_sem);
1050
1051exit_set_chap:
1052        return rc;
1053}
1054
1055
1056static int qla4xxx_get_host_stats(struct Scsi_Host *shost, char *buf, int len)
1057{
1058        struct scsi_qla_host *ha = to_qla_host(shost);
1059        struct iscsi_offload_host_stats *host_stats = NULL;
1060        int host_stats_size;
1061        int ret = 0;
1062        int ddb_idx = 0;
1063        struct ql_iscsi_stats *ql_iscsi_stats = NULL;
1064        int stats_size;
1065        dma_addr_t iscsi_stats_dma;
1066
1067        DEBUG2(ql4_printk(KERN_INFO, ha, "Func: %s\n", __func__));
1068
1069        host_stats_size = sizeof(struct iscsi_offload_host_stats);
1070
1071        if (host_stats_size != len) {
1072                ql4_printk(KERN_INFO, ha, "%s: host_stats size mismatch expected = %d, is = %d\n",
1073                           __func__, len, host_stats_size);
1074                ret = -EINVAL;
1075                goto exit_host_stats;
1076        }
1077        host_stats = (struct iscsi_offload_host_stats *)buf;
1078
1079        if (!buf) {
1080                ret = -ENOMEM;
1081                goto exit_host_stats;
1082        }
1083
1084        stats_size = PAGE_ALIGN(sizeof(struct ql_iscsi_stats));
1085
1086        ql_iscsi_stats = dma_alloc_coherent(&ha->pdev->dev, stats_size,
1087                                            &iscsi_stats_dma, GFP_KERNEL);
1088        if (!ql_iscsi_stats) {
1089                ql4_printk(KERN_ERR, ha,
1090                           "Unable to allocate memory for iscsi stats\n");
1091                ret = -ENOMEM;
1092                goto exit_host_stats;
1093        }
1094
1095        ret =  qla4xxx_get_mgmt_data(ha, ddb_idx, stats_size,
1096                                     iscsi_stats_dma);
1097        if (ret != QLA_SUCCESS) {
1098                ql4_printk(KERN_ERR, ha,
1099                           "Unable to retrieve iscsi stats\n");
1100                ret = -EIO;
1101                goto exit_host_stats;
1102        }
1103        host_stats->mactx_frames = le64_to_cpu(ql_iscsi_stats->mac_tx_frames);
1104        host_stats->mactx_bytes = le64_to_cpu(ql_iscsi_stats->mac_tx_bytes);
1105        host_stats->mactx_multicast_frames =
1106                        le64_to_cpu(ql_iscsi_stats->mac_tx_multicast_frames);
1107        host_stats->mactx_broadcast_frames =
1108                        le64_to_cpu(ql_iscsi_stats->mac_tx_broadcast_frames);
1109        host_stats->mactx_pause_frames =
1110                        le64_to_cpu(ql_iscsi_stats->mac_tx_pause_frames);
1111        host_stats->mactx_control_frames =
1112                        le64_to_cpu(ql_iscsi_stats->mac_tx_control_frames);
1113        host_stats->mactx_deferral =
1114                        le64_to_cpu(ql_iscsi_stats->mac_tx_deferral);
1115        host_stats->mactx_excess_deferral =
1116                        le64_to_cpu(ql_iscsi_stats->mac_tx_excess_deferral);
1117        host_stats->mactx_late_collision =
1118                        le64_to_cpu(ql_iscsi_stats->mac_tx_late_collision);
1119        host_stats->mactx_abort = le64_to_cpu(ql_iscsi_stats->mac_tx_abort);
1120        host_stats->mactx_single_collision =
1121                        le64_to_cpu(ql_iscsi_stats->mac_tx_single_collision);
1122        host_stats->mactx_multiple_collision =
1123                        le64_to_cpu(ql_iscsi_stats->mac_tx_multiple_collision);
1124        host_stats->mactx_collision =
1125                        le64_to_cpu(ql_iscsi_stats->mac_tx_collision);
1126        host_stats->mactx_frames_dropped =
1127                        le64_to_cpu(ql_iscsi_stats->mac_tx_frames_dropped);
1128        host_stats->mactx_jumbo_frames =
1129                        le64_to_cpu(ql_iscsi_stats->mac_tx_jumbo_frames);
1130        host_stats->macrx_frames = le64_to_cpu(ql_iscsi_stats->mac_rx_frames);
1131        host_stats->macrx_bytes = le64_to_cpu(ql_iscsi_stats->mac_rx_bytes);
1132        host_stats->macrx_unknown_control_frames =
1133                le64_to_cpu(ql_iscsi_stats->mac_rx_unknown_control_frames);
1134        host_stats->macrx_pause_frames =
1135                        le64_to_cpu(ql_iscsi_stats->mac_rx_pause_frames);
1136        host_stats->macrx_control_frames =
1137                        le64_to_cpu(ql_iscsi_stats->mac_rx_control_frames);
1138        host_stats->macrx_dribble =
1139                        le64_to_cpu(ql_iscsi_stats->mac_rx_dribble);
1140        host_stats->macrx_frame_length_error =
1141                        le64_to_cpu(ql_iscsi_stats->mac_rx_frame_length_error);
1142        host_stats->macrx_jabber = le64_to_cpu(ql_iscsi_stats->mac_rx_jabber);
1143        host_stats->macrx_carrier_sense_error =
1144                le64_to_cpu(ql_iscsi_stats->mac_rx_carrier_sense_error);
1145        host_stats->macrx_frame_discarded =
1146                        le64_to_cpu(ql_iscsi_stats->mac_rx_frame_discarded);
1147        host_stats->macrx_frames_dropped =
1148                        le64_to_cpu(ql_iscsi_stats->mac_rx_frames_dropped);
1149        host_stats->mac_crc_error = le64_to_cpu(ql_iscsi_stats->mac_crc_error);
1150        host_stats->mac_encoding_error =
1151                        le64_to_cpu(ql_iscsi_stats->mac_encoding_error);
1152        host_stats->macrx_length_error_large =
1153                        le64_to_cpu(ql_iscsi_stats->mac_rx_length_error_large);
1154        host_stats->macrx_length_error_small =
1155                        le64_to_cpu(ql_iscsi_stats->mac_rx_length_error_small);
1156        host_stats->macrx_multicast_frames =
1157                        le64_to_cpu(ql_iscsi_stats->mac_rx_multicast_frames);
1158        host_stats->macrx_broadcast_frames =
1159                        le64_to_cpu(ql_iscsi_stats->mac_rx_broadcast_frames);
1160        host_stats->iptx_packets = le64_to_cpu(ql_iscsi_stats->ip_tx_packets);
1161        host_stats->iptx_bytes = le64_to_cpu(ql_iscsi_stats->ip_tx_bytes);
1162        host_stats->iptx_fragments =
1163                        le64_to_cpu(ql_iscsi_stats->ip_tx_fragments);
1164        host_stats->iprx_packets = le64_to_cpu(ql_iscsi_stats->ip_rx_packets);
1165        host_stats->iprx_bytes = le64_to_cpu(ql_iscsi_stats->ip_rx_bytes);
1166        host_stats->iprx_fragments =
1167                        le64_to_cpu(ql_iscsi_stats->ip_rx_fragments);
1168        host_stats->ip_datagram_reassembly =
1169                        le64_to_cpu(ql_iscsi_stats->ip_datagram_reassembly);
1170        host_stats->ip_invalid_address_error =
1171                        le64_to_cpu(ql_iscsi_stats->ip_invalid_address_error);
1172        host_stats->ip_error_packets =
1173                        le64_to_cpu(ql_iscsi_stats->ip_error_packets);
1174        host_stats->ip_fragrx_overlap =
1175                        le64_to_cpu(ql_iscsi_stats->ip_fragrx_overlap);
1176        host_stats->ip_fragrx_outoforder =
1177                        le64_to_cpu(ql_iscsi_stats->ip_fragrx_outoforder);
1178        host_stats->ip_datagram_reassembly_timeout =
1179                le64_to_cpu(ql_iscsi_stats->ip_datagram_reassembly_timeout);
1180        host_stats->ipv6tx_packets =
1181                        le64_to_cpu(ql_iscsi_stats->ipv6_tx_packets);
1182        host_stats->ipv6tx_bytes = le64_to_cpu(ql_iscsi_stats->ipv6_tx_bytes);
1183        host_stats->ipv6tx_fragments =
1184                        le64_to_cpu(ql_iscsi_stats->ipv6_tx_fragments);
1185        host_stats->ipv6rx_packets =
1186                        le64_to_cpu(ql_iscsi_stats->ipv6_rx_packets);
1187        host_stats->ipv6rx_bytes = le64_to_cpu(ql_iscsi_stats->ipv6_rx_bytes);
1188        host_stats->ipv6rx_fragments =
1189                        le64_to_cpu(ql_iscsi_stats->ipv6_rx_fragments);
1190        host_stats->ipv6_datagram_reassembly =
1191                        le64_to_cpu(ql_iscsi_stats->ipv6_datagram_reassembly);
1192        host_stats->ipv6_invalid_address_error =
1193                le64_to_cpu(ql_iscsi_stats->ipv6_invalid_address_error);
1194        host_stats->ipv6_error_packets =
1195                        le64_to_cpu(ql_iscsi_stats->ipv6_error_packets);
1196        host_stats->ipv6_fragrx_overlap =
1197                        le64_to_cpu(ql_iscsi_stats->ipv6_fragrx_overlap);
1198        host_stats->ipv6_fragrx_outoforder =
1199                        le64_to_cpu(ql_iscsi_stats->ipv6_fragrx_outoforder);
1200        host_stats->ipv6_datagram_reassembly_timeout =
1201                le64_to_cpu(ql_iscsi_stats->ipv6_datagram_reassembly_timeout);
1202        host_stats->tcptx_segments =
1203                        le64_to_cpu(ql_iscsi_stats->tcp_tx_segments);
1204        host_stats->tcptx_bytes = le64_to_cpu(ql_iscsi_stats->tcp_tx_bytes);
1205        host_stats->tcprx_segments =
1206                        le64_to_cpu(ql_iscsi_stats->tcp_rx_segments);
1207        host_stats->tcprx_byte = le64_to_cpu(ql_iscsi_stats->tcp_rx_byte);
1208        host_stats->tcp_duplicate_ack_retx =
1209                        le64_to_cpu(ql_iscsi_stats->tcp_duplicate_ack_retx);
1210        host_stats->tcp_retx_timer_expired =
1211                        le64_to_cpu(ql_iscsi_stats->tcp_retx_timer_expired);
1212        host_stats->tcprx_duplicate_ack =
1213                        le64_to_cpu(ql_iscsi_stats->tcp_rx_duplicate_ack);
1214        host_stats->tcprx_pure_ackr =
1215                        le64_to_cpu(ql_iscsi_stats->tcp_rx_pure_ackr);
1216        host_stats->tcptx_delayed_ack =
1217                        le64_to_cpu(ql_iscsi_stats->tcp_tx_delayed_ack);
1218        host_stats->tcptx_pure_ack =
1219                        le64_to_cpu(ql_iscsi_stats->tcp_tx_pure_ack);
1220        host_stats->tcprx_segment_error =
1221                        le64_to_cpu(ql_iscsi_stats->tcp_rx_segment_error);
1222        host_stats->tcprx_segment_outoforder =
1223                        le64_to_cpu(ql_iscsi_stats->tcp_rx_segment_outoforder);
1224        host_stats->tcprx_window_probe =
1225                        le64_to_cpu(ql_iscsi_stats->tcp_rx_window_probe);
1226        host_stats->tcprx_window_update =
1227                        le64_to_cpu(ql_iscsi_stats->tcp_rx_window_update);
1228        host_stats->tcptx_window_probe_persist =
1229                le64_to_cpu(ql_iscsi_stats->tcp_tx_window_probe_persist);
1230        host_stats->ecc_error_correction =
1231                        le64_to_cpu(ql_iscsi_stats->ecc_error_correction);
1232        host_stats->iscsi_pdu_tx = le64_to_cpu(ql_iscsi_stats->iscsi_pdu_tx);
1233        host_stats->iscsi_data_bytes_tx =
1234                        le64_to_cpu(ql_iscsi_stats->iscsi_data_bytes_tx);
1235        host_stats->iscsi_pdu_rx = le64_to_cpu(ql_iscsi_stats->iscsi_pdu_rx);
1236        host_stats->iscsi_data_bytes_rx =
1237                        le64_to_cpu(ql_iscsi_stats->iscsi_data_bytes_rx);
1238        host_stats->iscsi_io_completed =
1239                        le64_to_cpu(ql_iscsi_stats->iscsi_io_completed);
1240        host_stats->iscsi_unexpected_io_rx =
1241                        le64_to_cpu(ql_iscsi_stats->iscsi_unexpected_io_rx);
1242        host_stats->iscsi_format_error =
1243                        le64_to_cpu(ql_iscsi_stats->iscsi_format_error);
1244        host_stats->iscsi_hdr_digest_error =
1245                        le64_to_cpu(ql_iscsi_stats->iscsi_hdr_digest_error);
1246        host_stats->iscsi_data_digest_error =
1247                        le64_to_cpu(ql_iscsi_stats->iscsi_data_digest_error);
1248        host_stats->iscsi_sequence_error =
1249                        le64_to_cpu(ql_iscsi_stats->iscsi_sequence_error);
1250exit_host_stats:
1251        if (ql_iscsi_stats)
1252                dma_free_coherent(&ha->pdev->dev, stats_size,
1253                                  ql_iscsi_stats, iscsi_stats_dma);
1254
1255        ql4_printk(KERN_INFO, ha, "%s: Get host stats done\n",
1256                   __func__);
1257        return ret;
1258}
1259
1260static int qla4xxx_get_iface_param(struct iscsi_iface *iface,
1261                                   enum iscsi_param_type param_type,
1262                                   int param, char *buf)
1263{
1264        struct Scsi_Host *shost = iscsi_iface_to_shost(iface);
1265        struct scsi_qla_host *ha = to_qla_host(shost);
1266        int ival;
1267        char *pval = NULL;
1268        int len = -ENOSYS;
1269
1270        if (param_type == ISCSI_NET_PARAM) {
1271                switch (param) {
1272                case ISCSI_NET_PARAM_IPV4_ADDR:
1273                        len = sprintf(buf, "%pI4\n", &ha->ip_config.ip_address);
1274                        break;
1275                case ISCSI_NET_PARAM_IPV4_SUBNET:
1276                        len = sprintf(buf, "%pI4\n",
1277                                      &ha->ip_config.subnet_mask);
1278                        break;
1279                case ISCSI_NET_PARAM_IPV4_GW:
1280                        len = sprintf(buf, "%pI4\n", &ha->ip_config.gateway);
1281                        break;
1282                case ISCSI_NET_PARAM_IFACE_ENABLE:
1283                        if (iface->iface_type == ISCSI_IFACE_TYPE_IPV4) {
1284                                OP_STATE(ha->ip_config.ipv4_options,
1285                                         IPOPT_IPV4_PROTOCOL_ENABLE, pval);
1286                        } else {
1287                                OP_STATE(ha->ip_config.ipv6_options,
1288                                         IPV6_OPT_IPV6_PROTOCOL_ENABLE, pval);
1289                        }
1290
1291                        len = sprintf(buf, "%s\n", pval);
1292                        break;
1293                case ISCSI_NET_PARAM_IPV4_BOOTPROTO:
1294                        len = sprintf(buf, "%s\n",
1295                                      (ha->ip_config.tcp_options &
1296                                       TCPOPT_DHCP_ENABLE) ?
1297                                      "dhcp" : "static");
1298                        break;
1299                case ISCSI_NET_PARAM_IPV6_ADDR:
1300                        if (iface->iface_num == 0)
1301                                len = sprintf(buf, "%pI6\n",
1302                                              &ha->ip_config.ipv6_addr0);
1303                        if (iface->iface_num == 1)
1304                                len = sprintf(buf, "%pI6\n",
1305                                              &ha->ip_config.ipv6_addr1);
1306                        break;
1307                case ISCSI_NET_PARAM_IPV6_LINKLOCAL:
1308                        len = sprintf(buf, "%pI6\n",
1309                                      &ha->ip_config.ipv6_link_local_addr);
1310                        break;
1311                case ISCSI_NET_PARAM_IPV6_ROUTER:
1312                        len = sprintf(buf, "%pI6\n",
1313                                      &ha->ip_config.ipv6_default_router_addr);
1314                        break;
1315                case ISCSI_NET_PARAM_IPV6_ADDR_AUTOCFG:
1316                        pval = (ha->ip_config.ipv6_addl_options &
1317                                IPV6_ADDOPT_NEIGHBOR_DISCOVERY_ADDR_ENABLE) ?
1318                                "nd" : "static";
1319
1320                        len = sprintf(buf, "%s\n", pval);
1321                        break;
1322                case ISCSI_NET_PARAM_IPV6_LINKLOCAL_AUTOCFG:
1323                        pval = (ha->ip_config.ipv6_addl_options &
1324                                IPV6_ADDOPT_AUTOCONFIG_LINK_LOCAL_ADDR) ?
1325                                "auto" : "static";
1326
1327                        len = sprintf(buf, "%s\n", pval);
1328                        break;
1329                case ISCSI_NET_PARAM_VLAN_ID:
1330                        if (iface->iface_type == ISCSI_IFACE_TYPE_IPV4)
1331                                ival = ha->ip_config.ipv4_vlan_tag &
1332                                       ISCSI_MAX_VLAN_ID;
1333                        else
1334                                ival = ha->ip_config.ipv6_vlan_tag &
1335                                       ISCSI_MAX_VLAN_ID;
1336
1337                        len = sprintf(buf, "%d\n", ival);
1338                        break;
1339                case ISCSI_NET_PARAM_VLAN_PRIORITY:
1340                        if (iface->iface_type == ISCSI_IFACE_TYPE_IPV4)
1341                                ival = (ha->ip_config.ipv4_vlan_tag >> 13) &
1342                                       ISCSI_MAX_VLAN_PRIORITY;
1343                        else
1344                                ival = (ha->ip_config.ipv6_vlan_tag >> 13) &
1345                                       ISCSI_MAX_VLAN_PRIORITY;
1346
1347                        len = sprintf(buf, "%d\n", ival);
1348                        break;
1349                case ISCSI_NET_PARAM_VLAN_ENABLED:
1350                        if (iface->iface_type == ISCSI_IFACE_TYPE_IPV4) {
1351                                OP_STATE(ha->ip_config.ipv4_options,
1352                                         IPOPT_VLAN_TAGGING_ENABLE, pval);
1353                        } else {
1354                                OP_STATE(ha->ip_config.ipv6_options,
1355                                         IPV6_OPT_VLAN_TAGGING_ENABLE, pval);
1356                        }
1357                        len = sprintf(buf, "%s\n", pval);
1358                        break;
1359                case ISCSI_NET_PARAM_MTU:
1360                        len = sprintf(buf, "%d\n", ha->ip_config.eth_mtu_size);
1361                        break;
1362                case ISCSI_NET_PARAM_PORT:
1363                        if (iface->iface_type == ISCSI_IFACE_TYPE_IPV4)
1364                                len = sprintf(buf, "%d\n",
1365                                              ha->ip_config.ipv4_port);
1366                        else
1367                                len = sprintf(buf, "%d\n",
1368                                              ha->ip_config.ipv6_port);
1369                        break;
1370                case ISCSI_NET_PARAM_IPADDR_STATE:
1371                        if (iface->iface_type == ISCSI_IFACE_TYPE_IPV4) {
1372                                pval = iscsi_get_ipaddress_state_name(
1373                                                ha->ip_config.ipv4_addr_state);
1374                        } else {
1375                                if (iface->iface_num == 0)
1376                                        pval = iscsi_get_ipaddress_state_name(
1377                                                ha->ip_config.ipv6_addr0_state);
1378                                else if (iface->iface_num == 1)
1379                                        pval = iscsi_get_ipaddress_state_name(
1380                                                ha->ip_config.ipv6_addr1_state);
1381                        }
1382
1383                        len = sprintf(buf, "%s\n", pval);
1384                        break;
1385                case ISCSI_NET_PARAM_IPV6_LINKLOCAL_STATE:
1386                        pval = iscsi_get_ipaddress_state_name(
1387                                        ha->ip_config.ipv6_link_local_state);
1388                        len = sprintf(buf, "%s\n", pval);
1389                        break;
1390                case ISCSI_NET_PARAM_IPV6_ROUTER_STATE:
1391                        pval = iscsi_get_router_state_name(
1392                                      ha->ip_config.ipv6_default_router_state);
1393                        len = sprintf(buf, "%s\n", pval);
1394                        break;
1395                case ISCSI_NET_PARAM_DELAYED_ACK_EN:
1396                        if (iface->iface_type == ISCSI_IFACE_TYPE_IPV4) {
1397                                OP_STATE(~ha->ip_config.tcp_options,
1398                                         TCPOPT_DELAYED_ACK_DISABLE, pval);
1399                        } else {
1400                                OP_STATE(~ha->ip_config.ipv6_tcp_options,
1401                                         IPV6_TCPOPT_DELAYED_ACK_DISABLE, pval);
1402                        }
1403                        len = sprintf(buf, "%s\n", pval);
1404                        break;
1405                case ISCSI_NET_PARAM_TCP_NAGLE_DISABLE:
1406                        if (iface->iface_type == ISCSI_IFACE_TYPE_IPV4) {
1407                                OP_STATE(~ha->ip_config.tcp_options,
1408                                         TCPOPT_NAGLE_ALGO_DISABLE, pval);
1409                        } else {
1410                                OP_STATE(~ha->ip_config.ipv6_tcp_options,
1411                                         IPV6_TCPOPT_NAGLE_ALGO_DISABLE, pval);
1412                        }
1413                        len = sprintf(buf, "%s\n", pval);
1414                        break;
1415                case ISCSI_NET_PARAM_TCP_WSF_DISABLE:
1416                        if (iface->iface_type == ISCSI_IFACE_TYPE_IPV4) {
1417                                OP_STATE(~ha->ip_config.tcp_options,
1418                                         TCPOPT_WINDOW_SCALE_DISABLE, pval);
1419                        } else {
1420                                OP_STATE(~ha->ip_config.ipv6_tcp_options,
1421                                         IPV6_TCPOPT_WINDOW_SCALE_DISABLE,
1422                                         pval);
1423                        }
1424                        len = sprintf(buf, "%s\n", pval);
1425                        break;
1426                case ISCSI_NET_PARAM_TCP_WSF:
1427                        if (iface->iface_type == ISCSI_IFACE_TYPE_IPV4)
1428                                len = sprintf(buf, "%d\n",
1429                                              ha->ip_config.tcp_wsf);
1430                        else
1431                                len = sprintf(buf, "%d\n",
1432                                              ha->ip_config.ipv6_tcp_wsf);
1433                        break;
1434                case ISCSI_NET_PARAM_TCP_TIMER_SCALE:
1435                        if (iface->iface_type == ISCSI_IFACE_TYPE_IPV4)
1436                                ival = (ha->ip_config.tcp_options &
1437                                        TCPOPT_TIMER_SCALE) >> 1;
1438                        else
1439                                ival = (ha->ip_config.ipv6_tcp_options &
1440                                        IPV6_TCPOPT_TIMER_SCALE) >> 1;
1441
1442                        len = sprintf(buf, "%d\n", ival);
1443                        break;
1444                case ISCSI_NET_PARAM_TCP_TIMESTAMP_EN:
1445                        if (iface->iface_type == ISCSI_IFACE_TYPE_IPV4) {
1446                                OP_STATE(ha->ip_config.tcp_options,
1447                                         TCPOPT_TIMESTAMP_ENABLE, pval);
1448                        } else {
1449                                OP_STATE(ha->ip_config.ipv6_tcp_options,
1450                                         IPV6_TCPOPT_TIMESTAMP_EN, pval);
1451                        }
1452                        len = sprintf(buf, "%s\n", pval);
1453                        break;
1454                case ISCSI_NET_PARAM_CACHE_ID:
1455                        if (iface->iface_type == ISCSI_IFACE_TYPE_IPV4)
1456                                len = sprintf(buf, "%d\n",
1457                                              ha->ip_config.ipv4_cache_id);
1458                        else
1459                                len = sprintf(buf, "%d\n",
1460                                              ha->ip_config.ipv6_cache_id);
1461                        break;
1462                case ISCSI_NET_PARAM_IPV4_DHCP_DNS_ADDR_EN:
1463                        OP_STATE(ha->ip_config.tcp_options,
1464                                 TCPOPT_DNS_SERVER_IP_EN, pval);
1465
1466                        len = sprintf(buf, "%s\n", pval);
1467                        break;
1468                case ISCSI_NET_PARAM_IPV4_DHCP_SLP_DA_EN:
1469                        OP_STATE(ha->ip_config.tcp_options,
1470                                 TCPOPT_SLP_DA_INFO_EN, pval);
1471
1472                        len = sprintf(buf, "%s\n", pval);
1473                        break;
1474                case ISCSI_NET_PARAM_IPV4_TOS_EN:
1475                        OP_STATE(ha->ip_config.ipv4_options,
1476                                 IPOPT_IPV4_TOS_EN, pval);
1477
1478                        len = sprintf(buf, "%s\n", pval);
1479                        break;
1480                case ISCSI_NET_PARAM_IPV4_TOS:
1481                        len = sprintf(buf, "%d\n", ha->ip_config.ipv4_tos);
1482                        break;
1483                case ISCSI_NET_PARAM_IPV4_GRAT_ARP_EN:
1484                        OP_STATE(ha->ip_config.ipv4_options,
1485                                 IPOPT_GRAT_ARP_EN, pval);
1486
1487                        len = sprintf(buf, "%s\n", pval);
1488                        break;
1489                case ISCSI_NET_PARAM_IPV4_DHCP_ALT_CLIENT_ID_EN:
1490                        OP_STATE(ha->ip_config.ipv4_options, IPOPT_ALT_CID_EN,
1491                                 pval);
1492
1493                        len = sprintf(buf, "%s\n", pval);
1494                        break;
1495                case ISCSI_NET_PARAM_IPV4_DHCP_ALT_CLIENT_ID:
1496                        pval = (ha->ip_config.ipv4_alt_cid_len) ?
1497                               (char *)ha->ip_config.ipv4_alt_cid : "";
1498
1499                        len = sprintf(buf, "%s\n", pval);
1500                        break;
1501                case ISCSI_NET_PARAM_IPV4_DHCP_REQ_VENDOR_ID_EN:
1502                        OP_STATE(ha->ip_config.ipv4_options,
1503                                 IPOPT_REQ_VID_EN, pval);
1504
1505                        len = sprintf(buf, "%s\n", pval);
1506                        break;
1507                case ISCSI_NET_PARAM_IPV4_DHCP_USE_VENDOR_ID_EN:
1508                        OP_STATE(ha->ip_config.ipv4_options,
1509                                 IPOPT_USE_VID_EN, pval);
1510
1511                        len = sprintf(buf, "%s\n", pval);
1512                        break;
1513                case ISCSI_NET_PARAM_IPV4_DHCP_VENDOR_ID:
1514                        pval = (ha->ip_config.ipv4_vid_len) ?
1515                               (char *)ha->ip_config.ipv4_vid : "";
1516
1517                        len = sprintf(buf, "%s\n", pval);
1518                        break;
1519                case ISCSI_NET_PARAM_IPV4_DHCP_LEARN_IQN_EN:
1520                        OP_STATE(ha->ip_config.ipv4_options,
1521                                 IPOPT_LEARN_IQN_EN, pval);
1522
1523                        len = sprintf(buf, "%s\n", pval);
1524                        break;
1525                case ISCSI_NET_PARAM_IPV4_FRAGMENT_DISABLE:
1526                        OP_STATE(~ha->ip_config.ipv4_options,
1527                                 IPOPT_FRAGMENTATION_DISABLE, pval);
1528
1529                        len = sprintf(buf, "%s\n", pval);
1530                        break;
1531                case ISCSI_NET_PARAM_IPV4_IN_FORWARD_EN:
1532                        OP_STATE(ha->ip_config.ipv4_options,
1533                                 IPOPT_IN_FORWARD_EN, pval);
1534
1535                        len = sprintf(buf, "%s\n", pval);
1536                        break;
1537                case ISCSI_NET_PARAM_REDIRECT_EN:
1538                        if (iface->iface_type == ISCSI_IFACE_TYPE_IPV4) {
1539                                OP_STATE(ha->ip_config.ipv4_options,
1540                                         IPOPT_ARP_REDIRECT_EN, pval);
1541                        } else {
1542                                OP_STATE(ha->ip_config.ipv6_options,
1543                                         IPV6_OPT_REDIRECT_EN, pval);
1544                        }
1545                        len = sprintf(buf, "%s\n", pval);
1546                        break;
1547                case ISCSI_NET_PARAM_IPV4_TTL:
1548                        len = sprintf(buf, "%d\n", ha->ip_config.ipv4_ttl);
1549                        break;
1550                case ISCSI_NET_PARAM_IPV6_GRAT_NEIGHBOR_ADV_EN:
1551                        OP_STATE(ha->ip_config.ipv6_options,
1552                                 IPV6_OPT_GRAT_NEIGHBOR_ADV_EN, pval);
1553
1554                        len = sprintf(buf, "%s\n", pval);
1555                        break;
1556                case ISCSI_NET_PARAM_IPV6_MLD_EN:
1557                        OP_STATE(ha->ip_config.ipv6_addl_options,
1558                                 IPV6_ADDOPT_MLD_EN, pval);
1559
1560                        len = sprintf(buf, "%s\n", pval);
1561                        break;
1562                case ISCSI_NET_PARAM_IPV6_FLOW_LABEL:
1563                        len = sprintf(buf, "%u\n", ha->ip_config.ipv6_flow_lbl);
1564                        break;
1565                case ISCSI_NET_PARAM_IPV6_TRAFFIC_CLASS:
1566                        len = sprintf(buf, "%d\n",
1567                                      ha->ip_config.ipv6_traffic_class);
1568                        break;
1569                case ISCSI_NET_PARAM_IPV6_HOP_LIMIT:
1570                        len = sprintf(buf, "%d\n",
1571                                      ha->ip_config.ipv6_hop_limit);
1572                        break;
1573                case ISCSI_NET_PARAM_IPV6_ND_REACHABLE_TMO:
1574                        len = sprintf(buf, "%d\n",
1575                                      ha->ip_config.ipv6_nd_reach_time);
1576                        break;
1577                case ISCSI_NET_PARAM_IPV6_ND_REXMIT_TIME:
1578                        len = sprintf(buf, "%d\n",
1579                                      ha->ip_config.ipv6_nd_rexmit_timer);
1580                        break;
1581                case ISCSI_NET_PARAM_IPV6_ND_STALE_TMO:
1582                        len = sprintf(buf, "%d\n",
1583                                      ha->ip_config.ipv6_nd_stale_timeout);
1584                        break;
1585                case ISCSI_NET_PARAM_IPV6_DUP_ADDR_DETECT_CNT:
1586                        len = sprintf(buf, "%d\n",
1587                                      ha->ip_config.ipv6_dup_addr_detect_count);
1588                        break;
1589                case ISCSI_NET_PARAM_IPV6_RTR_ADV_LINK_MTU:
1590                        len = sprintf(buf, "%d\n",
1591                                      ha->ip_config.ipv6_gw_advrt_mtu);
1592                        break;
1593                default:
1594                        len = -ENOSYS;
1595                }
1596        } else if (param_type == ISCSI_IFACE_PARAM) {
1597                switch (param) {
1598                case ISCSI_IFACE_PARAM_DEF_TASKMGMT_TMO:
1599                        len = sprintf(buf, "%d\n", ha->ip_config.def_timeout);
1600                        break;
1601                case ISCSI_IFACE_PARAM_HDRDGST_EN:
1602                        OP_STATE(ha->ip_config.iscsi_options,
1603                                 ISCSIOPTS_HEADER_DIGEST_EN, pval);
1604
1605                        len = sprintf(buf, "%s\n", pval);
1606                        break;
1607                case ISCSI_IFACE_PARAM_DATADGST_EN:
1608                        OP_STATE(ha->ip_config.iscsi_options,
1609                                 ISCSIOPTS_DATA_DIGEST_EN, pval);
1610
1611                        len = sprintf(buf, "%s\n", pval);
1612                        break;
1613                case ISCSI_IFACE_PARAM_IMM_DATA_EN:
1614                        OP_STATE(ha->ip_config.iscsi_options,
1615                                 ISCSIOPTS_IMMEDIATE_DATA_EN, pval);
1616
1617                        len = sprintf(buf, "%s\n", pval);
1618                        break;
1619                case ISCSI_IFACE_PARAM_INITIAL_R2T_EN:
1620                        OP_STATE(ha->ip_config.iscsi_options,
1621                                 ISCSIOPTS_INITIAL_R2T_EN, pval);
1622
1623                        len = sprintf(buf, "%s\n", pval);
1624                        break;
1625                case ISCSI_IFACE_PARAM_DATASEQ_INORDER_EN:
1626                        OP_STATE(ha->ip_config.iscsi_options,
1627                                 ISCSIOPTS_DATA_SEQ_INORDER_EN, pval);
1628
1629                        len = sprintf(buf, "%s\n", pval);
1630                        break;
1631                case ISCSI_IFACE_PARAM_PDU_INORDER_EN:
1632                        OP_STATE(ha->ip_config.iscsi_options,
1633                                 ISCSIOPTS_DATA_PDU_INORDER_EN, pval);
1634
1635                        len = sprintf(buf, "%s\n", pval);
1636                        break;
1637                case ISCSI_IFACE_PARAM_ERL:
1638                        len = sprintf(buf, "%d\n",
1639                                      (ha->ip_config.iscsi_options &
1640                                       ISCSIOPTS_ERL));
1641                        break;
1642                case ISCSI_IFACE_PARAM_MAX_RECV_DLENGTH:
1643                        len = sprintf(buf, "%u\n",
1644                                      ha->ip_config.iscsi_max_pdu_size *
1645                                      BYTE_UNITS);
1646                        break;
1647                case ISCSI_IFACE_PARAM_FIRST_BURST:
1648                        len = sprintf(buf, "%u\n",
1649                                      ha->ip_config.iscsi_first_burst_len *
1650                                      BYTE_UNITS);
1651                        break;
1652                case ISCSI_IFACE_PARAM_MAX_R2T:
1653                        len = sprintf(buf, "%d\n",
1654                                      ha->ip_config.iscsi_max_outstnd_r2t);
1655                        break;
1656                case ISCSI_IFACE_PARAM_MAX_BURST:
1657                        len = sprintf(buf, "%u\n",
1658                                      ha->ip_config.iscsi_max_burst_len *
1659                                      BYTE_UNITS);
1660                        break;
1661                case ISCSI_IFACE_PARAM_CHAP_AUTH_EN:
1662                        OP_STATE(ha->ip_config.iscsi_options,
1663                                 ISCSIOPTS_CHAP_AUTH_EN, pval);
1664
1665                        len = sprintf(buf, "%s\n", pval);
1666                        break;
1667                case ISCSI_IFACE_PARAM_BIDI_CHAP_EN:
1668                        OP_STATE(ha->ip_config.iscsi_options,
1669                                 ISCSIOPTS_BIDI_CHAP_EN, pval);
1670
1671                        len = sprintf(buf, "%s\n", pval);
1672                        break;
1673                case ISCSI_IFACE_PARAM_DISCOVERY_AUTH_OPTIONAL:
1674                        OP_STATE(ha->ip_config.iscsi_options,
1675                                 ISCSIOPTS_DISCOVERY_AUTH_EN, pval);
1676
1677                        len = sprintf(buf, "%s\n", pval);
1678                        break;
1679                case ISCSI_IFACE_PARAM_DISCOVERY_LOGOUT_EN:
1680                        OP_STATE(ha->ip_config.iscsi_options,
1681                                 ISCSIOPTS_DISCOVERY_LOGOUT_EN, pval);
1682
1683                        len = sprintf(buf, "%s\n", pval);
1684                        break;
1685                case ISCSI_IFACE_PARAM_STRICT_LOGIN_COMP_EN:
1686                        OP_STATE(ha->ip_config.iscsi_options,
1687                                 ISCSIOPTS_STRICT_LOGIN_COMP_EN, pval);
1688
1689                        len = sprintf(buf, "%s\n", pval);
1690                        break;
1691                case ISCSI_IFACE_PARAM_INITIATOR_NAME:
1692                        len = sprintf(buf, "%s\n", ha->ip_config.iscsi_name);
1693                        break;
1694                default:
1695                        len = -ENOSYS;
1696                }
1697        }
1698
1699        return len;
1700}
1701
1702static struct iscsi_endpoint *
1703qla4xxx_ep_connect(struct Scsi_Host *shost, struct sockaddr *dst_addr,
1704                   int non_blocking)
1705{
1706        int ret;
1707        struct iscsi_endpoint *ep;
1708        struct qla_endpoint *qla_ep;
1709        struct scsi_qla_host *ha;
1710        struct sockaddr_in *addr;
1711        struct sockaddr_in6 *addr6;
1712
1713        if (!shost) {
1714                ret = -ENXIO;
1715                pr_err("%s: shost is NULL\n", __func__);
1716                return ERR_PTR(ret);
1717        }
1718
1719        ha = iscsi_host_priv(shost);
1720        ep = iscsi_create_endpoint(sizeof(struct qla_endpoint));
1721        if (!ep) {
1722                ret = -ENOMEM;
1723                return ERR_PTR(ret);
1724        }
1725
1726        qla_ep = ep->dd_data;
1727        memset(qla_ep, 0, sizeof(struct qla_endpoint));
1728        if (dst_addr->sa_family == AF_INET) {
1729                memcpy(&qla_ep->dst_addr, dst_addr, sizeof(struct sockaddr_in));
1730                addr = (struct sockaddr_in *)&qla_ep->dst_addr;
1731                DEBUG2(ql4_printk(KERN_INFO, ha, "%s: %pI4\n", __func__,
1732                                  (char *)&addr->sin_addr));
1733        } else if (dst_addr->sa_family == AF_INET6) {
1734                memcpy(&qla_ep->dst_addr, dst_addr,
1735                       sizeof(struct sockaddr_in6));
1736                addr6 = (struct sockaddr_in6 *)&qla_ep->dst_addr;
1737                DEBUG2(ql4_printk(KERN_INFO, ha, "%s: %pI6\n", __func__,
1738                                  (char *)&addr6->sin6_addr));
1739        } else {
1740                ql4_printk(KERN_WARNING, ha, "%s: Invalid endpoint\n",
1741                           __func__);
1742        }
1743
1744        qla_ep->host = shost;
1745
1746        return ep;
1747}
1748
1749static int qla4xxx_ep_poll(struct iscsi_endpoint *ep, int timeout_ms)
1750{
1751        struct qla_endpoint *qla_ep;
1752        struct scsi_qla_host *ha;
1753        int ret = 0;
1754
1755        qla_ep = ep->dd_data;
1756        ha = to_qla_host(qla_ep->host);
1757        DEBUG2(pr_info_ratelimited("%s: host: %ld\n", __func__, ha->host_no));
1758
1759        if (adapter_up(ha) && !test_bit(AF_BUILD_DDB_LIST, &ha->flags))
1760                ret = 1;
1761
1762        return ret;
1763}
1764
1765static void qla4xxx_ep_disconnect(struct iscsi_endpoint *ep)
1766{
1767        struct qla_endpoint *qla_ep;
1768        struct scsi_qla_host *ha;
1769
1770        qla_ep = ep->dd_data;
1771        ha = to_qla_host(qla_ep->host);
1772        DEBUG2(ql4_printk(KERN_INFO, ha, "%s: host: %ld\n", __func__,
1773                          ha->host_no));
1774        iscsi_destroy_endpoint(ep);
1775}
1776
1777static int qla4xxx_get_ep_param(struct iscsi_endpoint *ep,
1778                                enum iscsi_param param,
1779                                char *buf)
1780{
1781        struct qla_endpoint *qla_ep = ep->dd_data;
1782        struct sockaddr *dst_addr;
1783        struct scsi_qla_host *ha;
1784
1785        if (!qla_ep)
1786                return -ENOTCONN;
1787
1788        ha = to_qla_host(qla_ep->host);
1789        DEBUG2(ql4_printk(KERN_INFO, ha, "%s: host: %ld\n", __func__,
1790                          ha->host_no));
1791
1792        switch (param) {
1793        case ISCSI_PARAM_CONN_PORT:
1794        case ISCSI_PARAM_CONN_ADDRESS:
1795                dst_addr = (struct sockaddr *)&qla_ep->dst_addr;
1796                if (!dst_addr)
1797                        return -ENOTCONN;
1798
1799                return iscsi_conn_get_addr_param((struct sockaddr_storage *)
1800                                                 &qla_ep->dst_addr, param, buf);
1801        default:
1802                return -ENOSYS;
1803        }
1804}
1805
1806static void qla4xxx_conn_get_stats(struct iscsi_cls_conn *cls_conn,
1807                                   struct iscsi_stats *stats)
1808{
1809        struct iscsi_session *sess;
1810        struct iscsi_cls_session *cls_sess;
1811        struct ddb_entry *ddb_entry;
1812        struct scsi_qla_host *ha;
1813        struct ql_iscsi_stats *ql_iscsi_stats;
1814        int stats_size;
1815        int ret;
1816        dma_addr_t iscsi_stats_dma;
1817
1818        cls_sess = iscsi_conn_to_session(cls_conn);
1819        sess = cls_sess->dd_data;
1820        ddb_entry = sess->dd_data;
1821        ha = ddb_entry->ha;
1822
1823        DEBUG2(ql4_printk(KERN_INFO, ha, "%s: host: %ld\n", __func__,
1824                          ha->host_no));
1825        stats_size = PAGE_ALIGN(sizeof(struct ql_iscsi_stats));
1826        /* Allocate memory */
1827        ql_iscsi_stats = dma_alloc_coherent(&ha->pdev->dev, stats_size,
1828                                            &iscsi_stats_dma, GFP_KERNEL);
1829        if (!ql_iscsi_stats) {
1830                ql4_printk(KERN_ERR, ha,
1831                           "Unable to allocate memory for iscsi stats\n");
1832                goto exit_get_stats;
1833        }
1834
1835        ret =  qla4xxx_get_mgmt_data(ha, ddb_entry->fw_ddb_index, stats_size,
1836                                     iscsi_stats_dma);
1837        if (ret != QLA_SUCCESS) {
1838                ql4_printk(KERN_ERR, ha,
1839                           "Unable to retrieve iscsi stats\n");
1840                goto free_stats;
1841        }
1842
1843        /* octets */
1844        stats->txdata_octets = le64_to_cpu(ql_iscsi_stats->tx_data_octets);
1845        stats->rxdata_octets = le64_to_cpu(ql_iscsi_stats->rx_data_octets);
1846        /* xmit pdus */
1847        stats->noptx_pdus = le32_to_cpu(ql_iscsi_stats->tx_nopout_pdus);
1848        stats->scsicmd_pdus = le32_to_cpu(ql_iscsi_stats->tx_scsi_cmd_pdus);
1849        stats->tmfcmd_pdus = le32_to_cpu(ql_iscsi_stats->tx_tmf_cmd_pdus);
1850        stats->login_pdus = le32_to_cpu(ql_iscsi_stats->tx_login_cmd_pdus);
1851        stats->text_pdus = le32_to_cpu(ql_iscsi_stats->tx_text_cmd_pdus);
1852        stats->dataout_pdus = le32_to_cpu(ql_iscsi_stats->tx_scsi_write_pdus);
1853        stats->logout_pdus = le32_to_cpu(ql_iscsi_stats->tx_logout_cmd_pdus);
1854        stats->snack_pdus = le32_to_cpu(ql_iscsi_stats->tx_snack_req_pdus);
1855        /* recv pdus */
1856        stats->noprx_pdus = le32_to_cpu(ql_iscsi_stats->rx_nopin_pdus);
1857        stats->scsirsp_pdus = le32_to_cpu(ql_iscsi_stats->rx_scsi_resp_pdus);
1858        stats->tmfrsp_pdus = le32_to_cpu(ql_iscsi_stats->rx_tmf_resp_pdus);
1859        stats->textrsp_pdus = le32_to_cpu(ql_iscsi_stats->rx_text_resp_pdus);
1860        stats->datain_pdus = le32_to_cpu(ql_iscsi_stats->rx_scsi_read_pdus);
1861        stats->logoutrsp_pdus =
1862                        le32_to_cpu(ql_iscsi_stats->rx_logout_resp_pdus);
1863        stats->r2t_pdus = le32_to_cpu(ql_iscsi_stats->rx_r2t_pdus);
1864        stats->async_pdus = le32_to_cpu(ql_iscsi_stats->rx_async_pdus);
1865        stats->rjt_pdus = le32_to_cpu(ql_iscsi_stats->rx_reject_pdus);
1866
1867free_stats:
1868        dma_free_coherent(&ha->pdev->dev, stats_size, ql_iscsi_stats,
1869                          iscsi_stats_dma);
1870exit_get_stats:
1871        return;
1872}
1873
1874static enum blk_eh_timer_return qla4xxx_eh_cmd_timed_out(struct scsi_cmnd *sc)
1875{
1876        struct iscsi_cls_session *session;
1877        unsigned long flags;
1878        enum blk_eh_timer_return ret = BLK_EH_DONE;
1879
1880        session = starget_to_session(scsi_target(sc->device));
1881
1882        spin_lock_irqsave(&session->lock, flags);
1883        if (session->state == ISCSI_SESSION_FAILED)
1884                ret = BLK_EH_RESET_TIMER;
1885        spin_unlock_irqrestore(&session->lock, flags);
1886
1887        return ret;
1888}
1889
1890static void qla4xxx_set_port_speed(struct Scsi_Host *shost)
1891{
1892        struct scsi_qla_host *ha = to_qla_host(shost);
1893        struct iscsi_cls_host *ihost = shost->shost_data;
1894        uint32_t speed = ISCSI_PORT_SPEED_UNKNOWN;
1895
1896        qla4xxx_get_firmware_state(ha);
1897
1898        switch (ha->addl_fw_state & 0x0F00) {
1899        case FW_ADDSTATE_LINK_SPEED_10MBPS:
1900                speed = ISCSI_PORT_SPEED_10MBPS;
1901                break;
1902        case FW_ADDSTATE_LINK_SPEED_100MBPS:
1903                speed = ISCSI_PORT_SPEED_100MBPS;
1904                break;
1905        case FW_ADDSTATE_LINK_SPEED_1GBPS:
1906                speed = ISCSI_PORT_SPEED_1GBPS;
1907                break;
1908        case FW_ADDSTATE_LINK_SPEED_10GBPS:
1909                speed = ISCSI_PORT_SPEED_10GBPS;
1910                break;
1911        }
1912        ihost->port_speed = speed;
1913}
1914
1915static void qla4xxx_set_port_state(struct Scsi_Host *shost)
1916{
1917        struct scsi_qla_host *ha = to_qla_host(shost);
1918        struct iscsi_cls_host *ihost = shost->shost_data;
1919        uint32_t state = ISCSI_PORT_STATE_DOWN;
1920
1921        if (test_bit(AF_LINK_UP, &ha->flags))
1922                state = ISCSI_PORT_STATE_UP;
1923
1924        ihost->port_state = state;
1925}
1926
1927static int qla4xxx_host_get_param(struct Scsi_Host *shost,
1928                                  enum iscsi_host_param param, char *buf)
1929{
1930        struct scsi_qla_host *ha = to_qla_host(shost);
1931        int len;
1932
1933        switch (param) {
1934        case ISCSI_HOST_PARAM_HWADDRESS:
1935                len = sysfs_format_mac(buf, ha->my_mac, MAC_ADDR_LEN);
1936                break;
1937        case ISCSI_HOST_PARAM_IPADDRESS:
1938                len = sprintf(buf, "%pI4\n", &ha->ip_config.ip_address);
1939                break;
1940        case ISCSI_HOST_PARAM_INITIATOR_NAME:
1941                len = sprintf(buf, "%s\n", ha->name_string);
1942                break;
1943        case ISCSI_HOST_PARAM_PORT_STATE:
1944                qla4xxx_set_port_state(shost);
1945                len = sprintf(buf, "%s\n", iscsi_get_port_state_name(shost));
1946                break;
1947        case ISCSI_HOST_PARAM_PORT_SPEED:
1948                qla4xxx_set_port_speed(shost);
1949                len = sprintf(buf, "%s\n", iscsi_get_port_speed_name(shost));
1950                break;
1951        default:
1952                return -ENOSYS;
1953        }
1954
1955        return len;
1956}
1957
1958static void qla4xxx_create_ipv4_iface(struct scsi_qla_host *ha)
1959{
1960        if (ha->iface_ipv4)
1961                return;
1962
1963        /* IPv4 */
1964        ha->iface_ipv4 = iscsi_create_iface(ha->host,
1965                                            &qla4xxx_iscsi_transport,
1966                                            ISCSI_IFACE_TYPE_IPV4, 0, 0);
1967        if (!ha->iface_ipv4)
1968                ql4_printk(KERN_ERR, ha, "Could not create IPv4 iSCSI "
1969                           "iface0.\n");
1970}
1971
1972static void qla4xxx_create_ipv6_iface(struct scsi_qla_host *ha)
1973{
1974        if (!ha->iface_ipv6_0)
1975                /* IPv6 iface-0 */
1976                ha->iface_ipv6_0 = iscsi_create_iface(ha->host,
1977                                                      &qla4xxx_iscsi_transport,
1978                                                      ISCSI_IFACE_TYPE_IPV6, 0,
1979                                                      0);
1980        if (!ha->iface_ipv6_0)
1981                ql4_printk(KERN_ERR, ha, "Could not create IPv6 iSCSI "
1982                           "iface0.\n");
1983
1984        if (!ha->iface_ipv6_1)
1985                /* IPv6 iface-1 */
1986                ha->iface_ipv6_1 = iscsi_create_iface(ha->host,
1987                                                      &qla4xxx_iscsi_transport,
1988                                                      ISCSI_IFACE_TYPE_IPV6, 1,
1989                                                      0);
1990        if (!ha->iface_ipv6_1)
1991                ql4_printk(KERN_ERR, ha, "Could not create IPv6 iSCSI "
1992                           "iface1.\n");
1993}
1994
1995static void qla4xxx_create_ifaces(struct scsi_qla_host *ha)
1996{
1997        if (ha->ip_config.ipv4_options & IPOPT_IPV4_PROTOCOL_ENABLE)
1998                qla4xxx_create_ipv4_iface(ha);
1999
2000        if (ha->ip_config.ipv6_options & IPV6_OPT_IPV6_PROTOCOL_ENABLE)
2001                qla4xxx_create_ipv6_iface(ha);
2002}
2003
2004static void qla4xxx_destroy_ipv4_iface(struct scsi_qla_host *ha)
2005{
2006        if (ha->iface_ipv4) {
2007                iscsi_destroy_iface(ha->iface_ipv4);
2008                ha->iface_ipv4 = NULL;
2009        }
2010}
2011
2012static void qla4xxx_destroy_ipv6_iface(struct scsi_qla_host *ha)
2013{
2014        if (ha->iface_ipv6_0) {
2015                iscsi_destroy_iface(ha->iface_ipv6_0);
2016                ha->iface_ipv6_0 = NULL;
2017        }
2018        if (ha->iface_ipv6_1) {
2019                iscsi_destroy_iface(ha->iface_ipv6_1);
2020                ha->iface_ipv6_1 = NULL;
2021        }
2022}
2023
2024static void qla4xxx_destroy_ifaces(struct scsi_qla_host *ha)
2025{
2026        qla4xxx_destroy_ipv4_iface(ha);
2027        qla4xxx_destroy_ipv6_iface(ha);
2028}
2029
2030static void qla4xxx_set_ipv6(struct scsi_qla_host *ha,
2031                             struct iscsi_iface_param_info *iface_param,
2032                             struct addr_ctrl_blk *init_fw_cb)
2033{
2034        /*
2035         * iface_num 0 is valid for IPv6 Addr, linklocal, router, autocfg.
2036         * iface_num 1 is valid only for IPv6 Addr.
2037         */
2038        switch (iface_param->param) {
2039        case ISCSI_NET_PARAM_IPV6_ADDR:
2040                if (iface_param->iface_num & 0x1)
2041                        /* IPv6 Addr 1 */
2042                        memcpy(init_fw_cb->ipv6_addr1, iface_param->value,
2043                               sizeof(init_fw_cb->ipv6_addr1));
2044                else
2045                        /* IPv6 Addr 0 */
2046                        memcpy(init_fw_cb->ipv6_addr0, iface_param->value,
2047                               sizeof(init_fw_cb->ipv6_addr0));
2048                break;
2049        case ISCSI_NET_PARAM_IPV6_LINKLOCAL:
2050                if (iface_param->iface_num & 0x1)
2051                        break;
2052                memcpy(init_fw_cb->ipv6_if_id, &iface_param->value[8],
2053                       sizeof(init_fw_cb->ipv6_if_id));
2054                break;
2055        case ISCSI_NET_PARAM_IPV6_ROUTER:
2056                if (iface_param->iface_num & 0x1)
2057                        break;
2058                memcpy(init_fw_cb->ipv6_dflt_rtr_addr, iface_param->value,
2059                       sizeof(init_fw_cb->ipv6_dflt_rtr_addr));
2060                break;
2061        case ISCSI_NET_PARAM_IPV6_ADDR_AUTOCFG:
2062                /* Autocfg applies to even interface */
2063                if (iface_param->iface_num & 0x1)
2064                        break;
2065
2066                if (iface_param->value[0] == ISCSI_IPV6_AUTOCFG_DISABLE)
2067                        init_fw_cb->ipv6_addtl_opts &=
2068                                cpu_to_le16(
2069                                  ~IPV6_ADDOPT_NEIGHBOR_DISCOVERY_ADDR_ENABLE);
2070                else if (iface_param->value[0] == ISCSI_IPV6_AUTOCFG_ND_ENABLE)
2071                        init_fw_cb->ipv6_addtl_opts |=
2072                                cpu_to_le16(
2073                                  IPV6_ADDOPT_NEIGHBOR_DISCOVERY_ADDR_ENABLE);
2074                else
2075                        ql4_printk(KERN_ERR, ha,
2076                                   "Invalid autocfg setting for IPv6 addr\n");
2077                break;
2078        case ISCSI_NET_PARAM_IPV6_LINKLOCAL_AUTOCFG:
2079                /* Autocfg applies to even interface */
2080                if (iface_param->iface_num & 0x1)
2081                        break;
2082
2083                if (iface_param->value[0] ==
2084                    ISCSI_IPV6_LINKLOCAL_AUTOCFG_ENABLE)
2085                        init_fw_cb->ipv6_addtl_opts |= cpu_to_le16(
2086                                        IPV6_ADDOPT_AUTOCONFIG_LINK_LOCAL_ADDR);
2087                else if (iface_param->value[0] ==
2088                         ISCSI_IPV6_LINKLOCAL_AUTOCFG_DISABLE)
2089                        init_fw_cb->ipv6_addtl_opts &= cpu_to_le16(
2090                                       ~IPV6_ADDOPT_AUTOCONFIG_LINK_LOCAL_ADDR);
2091                else
2092                        ql4_printk(KERN_ERR, ha,
2093                                   "Invalid autocfg setting for IPv6 linklocal addr\n");
2094                break;
2095        case ISCSI_NET_PARAM_IPV6_ROUTER_AUTOCFG:
2096                /* Autocfg applies to even interface */
2097                if (iface_param->iface_num & 0x1)
2098                        break;
2099
2100                if (iface_param->value[0] == ISCSI_IPV6_ROUTER_AUTOCFG_ENABLE)
2101                        memset(init_fw_cb->ipv6_dflt_rtr_addr, 0,
2102                               sizeof(init_fw_cb->ipv6_dflt_rtr_addr));
2103                break;
2104        case ISCSI_NET_PARAM_IFACE_ENABLE:
2105                if (iface_param->value[0] == ISCSI_IFACE_ENABLE) {
2106                        init_fw_cb->ipv6_opts |=
2107                                cpu_to_le16(IPV6_OPT_IPV6_PROTOCOL_ENABLE);
2108                        qla4xxx_create_ipv6_iface(ha);
2109                } else {
2110                        init_fw_cb->ipv6_opts &=
2111                                cpu_to_le16(~IPV6_OPT_IPV6_PROTOCOL_ENABLE &
2112                                            0xFFFF);
2113                        qla4xxx_destroy_ipv6_iface(ha);
2114                }
2115                break;
2116        case ISCSI_NET_PARAM_VLAN_TAG:
2117                if (iface_param->len != sizeof(init_fw_cb->ipv6_vlan_tag))
2118                        break;
2119                init_fw_cb->ipv6_vlan_tag =
2120                                cpu_to_be16(*(uint16_t *)iface_param->value);
2121                break;
2122        case ISCSI_NET_PARAM_VLAN_ENABLED:
2123                if (iface_param->value[0] == ISCSI_VLAN_ENABLE)
2124                        init_fw_cb->ipv6_opts |=
2125                                cpu_to_le16(IPV6_OPT_VLAN_TAGGING_ENABLE);
2126                else
2127                        init_fw_cb->ipv6_opts &=
2128                                cpu_to_le16(~IPV6_OPT_VLAN_TAGGING_ENABLE);
2129                break;
2130        case ISCSI_NET_PARAM_MTU:
2131                init_fw_cb->eth_mtu_size =
2132                                cpu_to_le16(*(uint16_t *)iface_param->value);
2133                break;
2134        case ISCSI_NET_PARAM_PORT:
2135                /* Autocfg applies to even interface */
2136                if (iface_param->iface_num & 0x1)
2137                        break;
2138
2139                init_fw_cb->ipv6_port =
2140                                cpu_to_le16(*(uint16_t *)iface_param->value);
2141                break;
2142        case ISCSI_NET_PARAM_DELAYED_ACK_EN:
2143                if (iface_param->iface_num & 0x1)
2144                        break;
2145                if (iface_param->value[0] == ISCSI_NET_PARAM_DISABLE)
2146                        init_fw_cb->ipv6_tcp_opts |=
2147                                cpu_to_le16(IPV6_TCPOPT_DELAYED_ACK_DISABLE);
2148                else
2149                        init_fw_cb->ipv6_tcp_opts &=
2150                                cpu_to_le16(~IPV6_TCPOPT_DELAYED_ACK_DISABLE &
2151                                            0xFFFF);
2152                break;
2153        case ISCSI_NET_PARAM_TCP_NAGLE_DISABLE:
2154                if (iface_param->iface_num & 0x1)
2155                        break;
2156                if (iface_param->value[0] == ISCSI_NET_PARAM_DISABLE)
2157                        init_fw_cb->ipv6_tcp_opts |=
2158                                cpu_to_le16(IPV6_TCPOPT_NAGLE_ALGO_DISABLE);
2159                else
2160                        init_fw_cb->ipv6_tcp_opts &=
2161                                cpu_to_le16(~IPV6_TCPOPT_NAGLE_ALGO_DISABLE);
2162                break;
2163        case ISCSI_NET_PARAM_TCP_WSF_DISABLE:
2164                if (iface_param->iface_num & 0x1)
2165                        break;
2166                if (iface_param->value[0] == ISCSI_NET_PARAM_DISABLE)
2167                        init_fw_cb->ipv6_tcp_opts |=
2168                                cpu_to_le16(IPV6_TCPOPT_WINDOW_SCALE_DISABLE);
2169                else
2170                        init_fw_cb->ipv6_tcp_opts &=
2171                                cpu_to_le16(~IPV6_TCPOPT_WINDOW_SCALE_DISABLE);
2172                break;
2173        case ISCSI_NET_PARAM_TCP_WSF:
2174                if (iface_param->iface_num & 0x1)
2175                        break;
2176                init_fw_cb->ipv6_tcp_wsf = iface_param->value[0];
2177                break;
2178        case ISCSI_NET_PARAM_TCP_TIMER_SCALE:
2179                if (iface_param->iface_num & 0x1)
2180                        break;
2181                init_fw_cb->ipv6_tcp_opts &=
2182                                        cpu_to_le16(~IPV6_TCPOPT_TIMER_SCALE);
2183                init_fw_cb->ipv6_tcp_opts |=
2184                                cpu_to_le16((iface_param->value[0] << 1) &
2185                                            IPV6_TCPOPT_TIMER_SCALE);
2186                break;
2187        case ISCSI_NET_PARAM_TCP_TIMESTAMP_EN:
2188                if (iface_param->iface_num & 0x1)
2189                        break;
2190                if (iface_param->value[0] == ISCSI_NET_PARAM_ENABLE)
2191                        init_fw_cb->ipv6_tcp_opts |=
2192                                cpu_to_le16(IPV6_TCPOPT_TIMESTAMP_EN);
2193                else
2194                        init_fw_cb->ipv6_tcp_opts &=
2195                                cpu_to_le16(~IPV6_TCPOPT_TIMESTAMP_EN);
2196                break;
2197        case ISCSI_NET_PARAM_IPV6_GRAT_NEIGHBOR_ADV_EN:
2198                if (iface_param->iface_num & 0x1)
2199                        break;
2200                if (iface_param->value[0] == ISCSI_NET_PARAM_ENABLE)
2201                        init_fw_cb->ipv6_opts |=
2202                                cpu_to_le16(IPV6_OPT_GRAT_NEIGHBOR_ADV_EN);
2203                else
2204                        init_fw_cb->ipv6_opts &=
2205                                cpu_to_le16(~IPV6_OPT_GRAT_NEIGHBOR_ADV_EN);
2206                break;
2207        case ISCSI_NET_PARAM_REDIRECT_EN:
2208                if (iface_param->iface_num & 0x1)
2209                        break;
2210                if (iface_param->value[0] == ISCSI_NET_PARAM_ENABLE)
2211                        init_fw_cb->ipv6_opts |=
2212                                cpu_to_le16(IPV6_OPT_REDIRECT_EN);
2213                else
2214                        init_fw_cb->ipv6_opts &=
2215                                cpu_to_le16(~IPV6_OPT_REDIRECT_EN);
2216                break;
2217        case ISCSI_NET_PARAM_IPV6_MLD_EN:
2218                if (iface_param->iface_num & 0x1)
2219                        break;
2220                if (iface_param->value[0] == ISCSI_NET_PARAM_ENABLE)
2221                        init_fw_cb->ipv6_addtl_opts |=
2222                                cpu_to_le16(IPV6_ADDOPT_MLD_EN);
2223                else
2224                        init_fw_cb->ipv6_addtl_opts &=
2225                                cpu_to_le16(~IPV6_ADDOPT_MLD_EN);
2226                break;
2227        case ISCSI_NET_PARAM_IPV6_FLOW_LABEL:
2228                if (iface_param->iface_num & 0x1)
2229                        break;
2230                init_fw_cb->ipv6_flow_lbl =
2231                                cpu_to_le16(*(uint16_t *)iface_param->value);
2232                break;
2233        case ISCSI_NET_PARAM_IPV6_TRAFFIC_CLASS:
2234                if (iface_param->iface_num & 0x1)
2235                        break;
2236                init_fw_cb->ipv6_traffic_class = iface_param->value[0];
2237                break;
2238        case ISCSI_NET_PARAM_IPV6_HOP_LIMIT:
2239                if (iface_param->iface_num & 0x1)
2240                        break;
2241                init_fw_cb->ipv6_hop_limit = iface_param->value[0];
2242                break;
2243        case ISCSI_NET_PARAM_IPV6_ND_REACHABLE_TMO:
2244                if (iface_param->iface_num & 0x1)
2245                        break;
2246                init_fw_cb->ipv6_nd_reach_time =
2247                                cpu_to_le32(*(uint32_t *)iface_param->value);
2248                break;
2249        case ISCSI_NET_PARAM_IPV6_ND_REXMIT_TIME:
2250                if (iface_param->iface_num & 0x1)
2251                        break;
2252                init_fw_cb->ipv6_nd_rexmit_timer =
2253                                cpu_to_le32(*(uint32_t *)iface_param->value);
2254                break;
2255        case ISCSI_NET_PARAM_IPV6_ND_STALE_TMO:
2256                if (iface_param->iface_num & 0x1)
2257                        break;
2258                init_fw_cb->ipv6_nd_stale_timeout =
2259                                cpu_to_le32(*(uint32_t *)iface_param->value);
2260                break;
2261        case ISCSI_NET_PARAM_IPV6_DUP_ADDR_DETECT_CNT:
2262                if (iface_param->iface_num & 0x1)
2263                        break;
2264                init_fw_cb->ipv6_dup_addr_detect_count = iface_param->value[0];
2265                break;
2266        case ISCSI_NET_PARAM_IPV6_RTR_ADV_LINK_MTU:
2267                if (iface_param->iface_num & 0x1)
2268                        break;
2269                init_fw_cb->ipv6_gw_advrt_mtu =
2270                                cpu_to_le32(*(uint32_t *)iface_param->value);
2271                break;
2272        default:
2273                ql4_printk(KERN_ERR, ha, "Unknown IPv6 param = %d\n",
2274                           iface_param->param);
2275                break;
2276        }
2277}
2278
2279static void qla4xxx_set_ipv4(struct scsi_qla_host *ha,
2280                             struct iscsi_iface_param_info *iface_param,
2281                             struct addr_ctrl_blk *init_fw_cb)
2282{
2283        switch (iface_param->param) {
2284        case ISCSI_NET_PARAM_IPV4_ADDR:
2285                memcpy(init_fw_cb->ipv4_addr, iface_param->value,
2286                       sizeof(init_fw_cb->ipv4_addr));
2287                break;
2288        case ISCSI_NET_PARAM_IPV4_SUBNET:
2289                memcpy(init_fw_cb->ipv4_subnet, iface_param->value,
2290                       sizeof(init_fw_cb->ipv4_subnet));
2291                break;
2292        case ISCSI_NET_PARAM_IPV4_GW:
2293                memcpy(init_fw_cb->ipv4_gw_addr, iface_param->value,
2294                       sizeof(init_fw_cb->ipv4_gw_addr));
2295                break;
2296        case ISCSI_NET_PARAM_IPV4_BOOTPROTO:
2297                if (iface_param->value[0] == ISCSI_BOOTPROTO_DHCP)
2298                        init_fw_cb->ipv4_tcp_opts |=
2299                                        cpu_to_le16(TCPOPT_DHCP_ENABLE);
2300                else if (iface_param->value[0] == ISCSI_BOOTPROTO_STATIC)
2301                        init_fw_cb->ipv4_tcp_opts &=
2302                                        cpu_to_le16(~TCPOPT_DHCP_ENABLE);
2303                else
2304                        ql4_printk(KERN_ERR, ha, "Invalid IPv4 bootproto\n");
2305                break;
2306        case ISCSI_NET_PARAM_IFACE_ENABLE:
2307                if (iface_param->value[0] == ISCSI_IFACE_ENABLE) {
2308                        init_fw_cb->ipv4_ip_opts |=
2309                                cpu_to_le16(IPOPT_IPV4_PROTOCOL_ENABLE);
2310                        qla4xxx_create_ipv4_iface(ha);
2311                } else {
2312                        init_fw_cb->ipv4_ip_opts &=
2313                                cpu_to_le16(~IPOPT_IPV4_PROTOCOL_ENABLE &
2314                                            0xFFFF);
2315                        qla4xxx_destroy_ipv4_iface(ha);
2316                }
2317                break;
2318        case ISCSI_NET_PARAM_VLAN_TAG:
2319                if (iface_param->len != sizeof(init_fw_cb->ipv4_vlan_tag))
2320                        break;
2321                init_fw_cb->ipv4_vlan_tag =
2322                                cpu_to_be16(*(uint16_t *)iface_param->value);
2323                break;
2324        case ISCSI_NET_PARAM_VLAN_ENABLED:
2325                if (iface_param->value[0] == ISCSI_VLAN_ENABLE)
2326                        init_fw_cb->ipv4_ip_opts |=
2327                                        cpu_to_le16(IPOPT_VLAN_TAGGING_ENABLE);
2328                else
2329                        init_fw_cb->ipv4_ip_opts &=
2330                                        cpu_to_le16(~IPOPT_VLAN_TAGGING_ENABLE);
2331                break;
2332        case ISCSI_NET_PARAM_MTU:
2333                init_fw_cb->eth_mtu_size =
2334                                cpu_to_le16(*(uint16_t *)iface_param->value);
2335                break;
2336        case ISCSI_NET_PARAM_PORT:
2337                init_fw_cb->ipv4_port =
2338                                cpu_to_le16(*(uint16_t *)iface_param->value);
2339                break;
2340        case ISCSI_NET_PARAM_DELAYED_ACK_EN:
2341                if (iface_param->iface_num & 0x1)
2342                        break;
2343                if (iface_param->value[0] == ISCSI_NET_PARAM_DISABLE)
2344                        init_fw_cb->ipv4_tcp_opts |=
2345                                cpu_to_le16(TCPOPT_DELAYED_ACK_DISABLE);
2346                else
2347                        init_fw_cb->ipv4_tcp_opts &=
2348                                cpu_to_le16(~TCPOPT_DELAYED_ACK_DISABLE &
2349                                            0xFFFF);
2350                break;
2351        case ISCSI_NET_PARAM_TCP_NAGLE_DISABLE:
2352                if (iface_param->iface_num & 0x1)
2353                        break;
2354                if (iface_param->value[0] == ISCSI_NET_PARAM_DISABLE)
2355                        init_fw_cb->ipv4_tcp_opts |=
2356                                cpu_to_le16(TCPOPT_NAGLE_ALGO_DISABLE);
2357                else
2358                        init_fw_cb->ipv4_tcp_opts &=
2359                                cpu_to_le16(~TCPOPT_NAGLE_ALGO_DISABLE);
2360                break;
2361        case ISCSI_NET_PARAM_TCP_WSF_DISABLE:
2362                if (iface_param->iface_num & 0x1)
2363                        break;
2364                if (iface_param->value[0] == ISCSI_NET_PARAM_DISABLE)
2365                        init_fw_cb->ipv4_tcp_opts |=
2366                                cpu_to_le16(TCPOPT_WINDOW_SCALE_DISABLE);
2367                else
2368                        init_fw_cb->ipv4_tcp_opts &=
2369                                cpu_to_le16(~TCPOPT_WINDOW_SCALE_DISABLE);
2370                break;
2371        case ISCSI_NET_PARAM_TCP_WSF:
2372                if (iface_param->iface_num & 0x1)
2373                        break;
2374                init_fw_cb->ipv4_tcp_wsf = iface_param->value[0];
2375                break;
2376        case ISCSI_NET_PARAM_TCP_TIMER_SCALE:
2377                if (iface_param->iface_num & 0x1)
2378                        break;
2379                init_fw_cb->ipv4_tcp_opts &= cpu_to_le16(~TCPOPT_TIMER_SCALE);
2380                init_fw_cb->ipv4_tcp_opts |=
2381                                cpu_to_le16((iface_param->value[0] << 1) &
2382                                            TCPOPT_TIMER_SCALE);
2383                break;
2384        case ISCSI_NET_PARAM_TCP_TIMESTAMP_EN:
2385                if (iface_param->iface_num & 0x1)
2386                        break;
2387                if (iface_param->value[0] == ISCSI_NET_PARAM_ENABLE)
2388                        init_fw_cb->ipv4_tcp_opts |=
2389                                cpu_to_le16(TCPOPT_TIMESTAMP_ENABLE);
2390                else
2391                        init_fw_cb->ipv4_tcp_opts &=
2392                                cpu_to_le16(~TCPOPT_TIMESTAMP_ENABLE);
2393                break;
2394        case ISCSI_NET_PARAM_IPV4_DHCP_DNS_ADDR_EN:
2395                if (iface_param->iface_num & 0x1)
2396                        break;
2397                if (iface_param->value[0] == ISCSI_NET_PARAM_ENABLE)
2398                        init_fw_cb->ipv4_tcp_opts |=
2399                                cpu_to_le16(TCPOPT_DNS_SERVER_IP_EN);
2400                else
2401                        init_fw_cb->ipv4_tcp_opts &=
2402                                cpu_to_le16(~TCPOPT_DNS_SERVER_IP_EN);
2403                break;
2404        case ISCSI_NET_PARAM_IPV4_DHCP_SLP_DA_EN:
2405                if (iface_param->iface_num & 0x1)
2406                        break;
2407                if (iface_param->value[0] == ISCSI_NET_PARAM_ENABLE)
2408                        init_fw_cb->ipv4_tcp_opts |=
2409                                cpu_to_le16(TCPOPT_SLP_DA_INFO_EN);
2410                else
2411                        init_fw_cb->ipv4_tcp_opts &=
2412                                cpu_to_le16(~TCPOPT_SLP_DA_INFO_EN);
2413                break;
2414        case ISCSI_NET_PARAM_IPV4_TOS_EN:
2415                if (iface_param->iface_num & 0x1)
2416                        break;
2417                if (iface_param->value[0] == ISCSI_NET_PARAM_ENABLE)
2418                        init_fw_cb->ipv4_ip_opts |=
2419                                cpu_to_le16(IPOPT_IPV4_TOS_EN);
2420                else
2421                        init_fw_cb->ipv4_ip_opts &=
2422                                cpu_to_le16(~IPOPT_IPV4_TOS_EN);
2423                break;
2424        case ISCSI_NET_PARAM_IPV4_TOS:
2425                if (iface_param->iface_num & 0x1)
2426                        break;
2427                init_fw_cb->ipv4_tos = iface_param->value[0];
2428                break;
2429        case ISCSI_NET_PARAM_IPV4_GRAT_ARP_EN:
2430                if (iface_param->iface_num & 0x1)
2431                        break;
2432                if (iface_param->value[0] == ISCSI_NET_PARAM_ENABLE)
2433                        init_fw_cb->ipv4_ip_opts |=
2434                                        cpu_to_le16(IPOPT_GRAT_ARP_EN);
2435                else
2436                        init_fw_cb->ipv4_ip_opts &=
2437                                        cpu_to_le16(~IPOPT_GRAT_ARP_EN);
2438                break;
2439        case ISCSI_NET_PARAM_IPV4_DHCP_ALT_CLIENT_ID_EN:
2440                if (iface_param->iface_num & 0x1)
2441                        break;
2442                if (iface_param->value[0] == ISCSI_NET_PARAM_ENABLE)
2443                        init_fw_cb->ipv4_ip_opts |=
2444                                cpu_to_le16(IPOPT_ALT_CID_EN);
2445                else
2446                        init_fw_cb->ipv4_ip_opts &=
2447                                cpu_to_le16(~IPOPT_ALT_CID_EN);
2448                break;
2449        case ISCSI_NET_PARAM_IPV4_DHCP_ALT_CLIENT_ID:
2450                if (iface_param->iface_num & 0x1)
2451                        break;
2452                memcpy(init_fw_cb->ipv4_dhcp_alt_cid, iface_param->value,
2453                       (sizeof(init_fw_cb->ipv4_dhcp_alt_cid) - 1));
2454                init_fw_cb->ipv4_dhcp_alt_cid_len =
2455                                        strlen(init_fw_cb->ipv4_dhcp_alt_cid);
2456                break;
2457        case ISCSI_NET_PARAM_IPV4_DHCP_REQ_VENDOR_ID_EN:
2458                if (iface_param->iface_num & 0x1)
2459                        break;
2460                if (iface_param->value[0] == ISCSI_NET_PARAM_ENABLE)
2461                        init_fw_cb->ipv4_ip_opts |=
2462                                        cpu_to_le16(IPOPT_REQ_VID_EN);
2463                else
2464                        init_fw_cb->ipv4_ip_opts &=
2465                                        cpu_to_le16(~IPOPT_REQ_VID_EN);
2466                break;
2467        case ISCSI_NET_PARAM_IPV4_DHCP_USE_VENDOR_ID_EN:
2468                if (iface_param->iface_num & 0x1)
2469                        break;
2470                if (iface_param->value[0] == ISCSI_NET_PARAM_ENABLE)
2471                        init_fw_cb->ipv4_ip_opts |=
2472                                        cpu_to_le16(IPOPT_USE_VID_EN);
2473                else
2474                        init_fw_cb->ipv4_ip_opts &=
2475                                        cpu_to_le16(~IPOPT_USE_VID_EN);
2476                break;
2477        case ISCSI_NET_PARAM_IPV4_DHCP_VENDOR_ID:
2478                if (iface_param->iface_num & 0x1)
2479                        break;
2480                memcpy(init_fw_cb->ipv4_dhcp_vid, iface_param->value,
2481                       (sizeof(init_fw_cb->ipv4_dhcp_vid) - 1));
2482                init_fw_cb->ipv4_dhcp_vid_len =
2483                                        strlen(init_fw_cb->ipv4_dhcp_vid);
2484                break;
2485        case ISCSI_NET_PARAM_IPV4_DHCP_LEARN_IQN_EN:
2486                if (iface_param->iface_num & 0x1)
2487                        break;
2488                if (iface_param->value[0] == ISCSI_NET_PARAM_ENABLE)
2489                        init_fw_cb->ipv4_ip_opts |=
2490                                        cpu_to_le16(IPOPT_LEARN_IQN_EN);
2491                else
2492                        init_fw_cb->ipv4_ip_opts &=
2493                                        cpu_to_le16(~IPOPT_LEARN_IQN_EN);
2494                break;
2495        case ISCSI_NET_PARAM_IPV4_FRAGMENT_DISABLE:
2496                if (iface_param->iface_num & 0x1)
2497                        break;
2498                if (iface_param->value[0] == ISCSI_NET_PARAM_DISABLE)
2499                        init_fw_cb->ipv4_ip_opts |=
2500                                cpu_to_le16(IPOPT_FRAGMENTATION_DISABLE);
2501                else
2502                        init_fw_cb->ipv4_ip_opts &=
2503                                cpu_to_le16(~IPOPT_FRAGMENTATION_DISABLE);
2504                break;
2505        case ISCSI_NET_PARAM_IPV4_IN_FORWARD_EN:
2506                if (iface_param->iface_num & 0x1)
2507                        break;
2508                if (iface_param->value[0] == ISCSI_NET_PARAM_ENABLE)
2509                        init_fw_cb->ipv4_ip_opts |=
2510                                cpu_to_le16(IPOPT_IN_FORWARD_EN);
2511                else
2512                        init_fw_cb->ipv4_ip_opts &=
2513                                cpu_to_le16(~IPOPT_IN_FORWARD_EN);
2514                break;
2515        case ISCSI_NET_PARAM_REDIRECT_EN:
2516                if (iface_param->iface_num & 0x1)
2517                        break;
2518                if (iface_param->value[0] == ISCSI_NET_PARAM_ENABLE)
2519                        init_fw_cb->ipv4_ip_opts |=
2520                                cpu_to_le16(IPOPT_ARP_REDIRECT_EN);
2521                else
2522                        init_fw_cb->ipv4_ip_opts &=
2523                                cpu_to_le16(~IPOPT_ARP_REDIRECT_EN);
2524                break;
2525        case ISCSI_NET_PARAM_IPV4_TTL:
2526                if (iface_param->iface_num & 0x1)
2527                        break;
2528                init_fw_cb->ipv4_ttl = iface_param->value[0];
2529                break;
2530        default:
2531                ql4_printk(KERN_ERR, ha, "Unknown IPv4 param = %d\n",
2532                           iface_param->param);
2533                break;
2534        }
2535}
2536
2537static void qla4xxx_set_iscsi_param(struct scsi_qla_host *ha,
2538                                    struct iscsi_iface_param_info *iface_param,
2539                                    struct addr_ctrl_blk *init_fw_cb)
2540{
2541        switch (iface_param->param) {
2542        case ISCSI_IFACE_PARAM_DEF_TASKMGMT_TMO:
2543                if (iface_param->iface_num & 0x1)
2544                        break;
2545                init_fw_cb->def_timeout =
2546                                cpu_to_le16(*(uint16_t *)iface_param->value);
2547                break;
2548        case ISCSI_IFACE_PARAM_HDRDGST_EN:
2549                if (iface_param->iface_num & 0x1)
2550                        break;
2551                if (iface_param->value[0] == ISCSI_NET_PARAM_ENABLE)
2552                        init_fw_cb->iscsi_opts |=
2553                                cpu_to_le16(ISCSIOPTS_HEADER_DIGEST_EN);
2554                else
2555                        init_fw_cb->iscsi_opts &=
2556                                cpu_to_le16(~ISCSIOPTS_HEADER_DIGEST_EN);
2557                break;
2558        case ISCSI_IFACE_PARAM_DATADGST_EN:
2559                if (iface_param->iface_num & 0x1)
2560                        break;
2561                if (iface_param->value[0] == ISCSI_NET_PARAM_ENABLE)
2562                        init_fw_cb->iscsi_opts |=
2563                                cpu_to_le16(ISCSIOPTS_DATA_DIGEST_EN);
2564                else
2565                        init_fw_cb->iscsi_opts &=
2566                                cpu_to_le16(~ISCSIOPTS_DATA_DIGEST_EN);
2567                break;
2568        case ISCSI_IFACE_PARAM_IMM_DATA_EN:
2569                if (iface_param->iface_num & 0x1)
2570                        break;
2571                if (iface_param->value[0] == ISCSI_NET_PARAM_ENABLE)
2572                        init_fw_cb->iscsi_opts |=
2573                                cpu_to_le16(ISCSIOPTS_IMMEDIATE_DATA_EN);
2574                else
2575                        init_fw_cb->iscsi_opts &=
2576                                cpu_to_le16(~ISCSIOPTS_IMMEDIATE_DATA_EN);
2577                break;
2578        case ISCSI_IFACE_PARAM_INITIAL_R2T_EN:
2579                if (iface_param->iface_num & 0x1)
2580                        break;
2581                if (iface_param->value[0] == ISCSI_NET_PARAM_ENABLE)
2582                        init_fw_cb->iscsi_opts |=
2583                                cpu_to_le16(ISCSIOPTS_INITIAL_R2T_EN);
2584                else
2585                        init_fw_cb->iscsi_opts &=
2586                                cpu_to_le16(~ISCSIOPTS_INITIAL_R2T_EN);
2587                break;
2588        case ISCSI_IFACE_PARAM_DATASEQ_INORDER_EN:
2589                if (iface_param->iface_num & 0x1)
2590                        break;
2591                if (iface_param->value[0] == ISCSI_NET_PARAM_ENABLE)
2592                        init_fw_cb->iscsi_opts |=
2593                                cpu_to_le16(ISCSIOPTS_DATA_SEQ_INORDER_EN);
2594                else
2595                        init_fw_cb->iscsi_opts &=
2596                                cpu_to_le16(~ISCSIOPTS_DATA_SEQ_INORDER_EN);
2597                break;
2598        case ISCSI_IFACE_PARAM_PDU_INORDER_EN:
2599                if (iface_param->iface_num & 0x1)
2600                        break;
2601                if (iface_param->value[0] == ISCSI_NET_PARAM_ENABLE)
2602                        init_fw_cb->iscsi_opts |=
2603                                cpu_to_le16(ISCSIOPTS_DATA_PDU_INORDER_EN);
2604                else
2605                        init_fw_cb->iscsi_opts &=
2606                                cpu_to_le16(~ISCSIOPTS_DATA_PDU_INORDER_EN);
2607                break;
2608        case ISCSI_IFACE_PARAM_ERL:
2609                if (iface_param->iface_num & 0x1)
2610                        break;
2611                init_fw_cb->iscsi_opts &= cpu_to_le16(~ISCSIOPTS_ERL);
2612                init_fw_cb->iscsi_opts |= cpu_to_le16(iface_param->value[0] &
2613                                                      ISCSIOPTS_ERL);
2614                break;
2615        case ISCSI_IFACE_PARAM_MAX_RECV_DLENGTH:
2616                if (iface_param->iface_num & 0x1)
2617                        break;
2618                init_fw_cb->iscsi_max_pdu_size =
2619                                cpu_to_le32(*(uint32_t *)iface_param->value) /
2620                                BYTE_UNITS;
2621                break;
2622        case ISCSI_IFACE_PARAM_FIRST_BURST:
2623                if (iface_param->iface_num & 0x1)
2624                        break;
2625                init_fw_cb->iscsi_fburst_len =
2626                                cpu_to_le32(*(uint32_t *)iface_param->value) /
2627                                BYTE_UNITS;
2628                break;
2629        case ISCSI_IFACE_PARAM_MAX_R2T:
2630                if (iface_param->iface_num & 0x1)
2631                        break;
2632                init_fw_cb->iscsi_max_outstnd_r2t =
2633                                cpu_to_le16(*(uint16_t *)iface_param->value);
2634                break;
2635        case ISCSI_IFACE_PARAM_MAX_BURST:
2636                if (iface_param->iface_num & 0x1)
2637                        break;
2638                init_fw_cb->iscsi_max_burst_len =
2639                                cpu_to_le32(*(uint32_t *)iface_param->value) /
2640                                BYTE_UNITS;
2641                break;
2642        case ISCSI_IFACE_PARAM_CHAP_AUTH_EN:
2643                if (iface_param->iface_num & 0x1)
2644                        break;
2645                if (iface_param->value[0] == ISCSI_NET_PARAM_ENABLE)
2646                        init_fw_cb->iscsi_opts |=
2647                                cpu_to_le16(ISCSIOPTS_CHAP_AUTH_EN);
2648                else
2649                        init_fw_cb->iscsi_opts &=
2650                                cpu_to_le16(~ISCSIOPTS_CHAP_AUTH_EN);
2651                break;
2652        case ISCSI_IFACE_PARAM_BIDI_CHAP_EN:
2653                if (iface_param->iface_num & 0x1)
2654                        break;
2655                if (iface_param->value[0] == ISCSI_NET_PARAM_ENABLE)
2656                        init_fw_cb->iscsi_opts |=
2657                                cpu_to_le16(ISCSIOPTS_BIDI_CHAP_EN);
2658                else
2659                        init_fw_cb->iscsi_opts &=
2660                                cpu_to_le16(~ISCSIOPTS_BIDI_CHAP_EN);
2661                break;
2662        case ISCSI_IFACE_PARAM_DISCOVERY_AUTH_OPTIONAL:
2663                if (iface_param->iface_num & 0x1)
2664                        break;
2665                if (iface_param->value[0] == ISCSI_NET_PARAM_ENABLE)
2666                        init_fw_cb->iscsi_opts |=
2667                                cpu_to_le16(ISCSIOPTS_DISCOVERY_AUTH_EN);
2668                else
2669                        init_fw_cb->iscsi_opts &=
2670                                cpu_to_le16(~ISCSIOPTS_DISCOVERY_AUTH_EN);
2671                break;
2672        case ISCSI_IFACE_PARAM_DISCOVERY_LOGOUT_EN:
2673                if (iface_param->iface_num & 0x1)
2674                        break;
2675                if (iface_param->value[0] == ISCSI_NET_PARAM_ENABLE)
2676                        init_fw_cb->iscsi_opts |=
2677                                cpu_to_le16(ISCSIOPTS_DISCOVERY_LOGOUT_EN);
2678                else
2679                        init_fw_cb->iscsi_opts &=
2680                                cpu_to_le16(~ISCSIOPTS_DISCOVERY_LOGOUT_EN);
2681                break;
2682        case ISCSI_IFACE_PARAM_STRICT_LOGIN_COMP_EN:
2683                if (iface_param->iface_num & 0x1)
2684                        break;
2685                if (iface_param->value[0] == ISCSI_NET_PARAM_ENABLE)
2686                        init_fw_cb->iscsi_opts |=
2687                                cpu_to_le16(ISCSIOPTS_STRICT_LOGIN_COMP_EN);
2688                else
2689                        init_fw_cb->iscsi_opts &=
2690                                cpu_to_le16(~ISCSIOPTS_STRICT_LOGIN_COMP_EN);
2691                break;
2692        default:
2693                ql4_printk(KERN_ERR, ha, "Unknown iscsi param = %d\n",
2694                           iface_param->param);
2695                break;
2696        }
2697}
2698
2699static void
2700qla4xxx_initcb_to_acb(struct addr_ctrl_blk *init_fw_cb)
2701{
2702        struct addr_ctrl_blk_def *acb;
2703        acb = (struct addr_ctrl_blk_def *)init_fw_cb;
2704        memset(acb->reserved1, 0, sizeof(acb->reserved1));
2705        memset(acb->reserved2, 0, sizeof(acb->reserved2));
2706        memset(acb->reserved3, 0, sizeof(acb->reserved3));
2707        memset(acb->reserved4, 0, sizeof(acb->reserved4));
2708        memset(acb->reserved5, 0, sizeof(acb->reserved5));
2709        memset(acb->reserved6, 0, sizeof(acb->reserved6));
2710        memset(acb->reserved7, 0, sizeof(acb->reserved7));
2711        memset(acb->reserved8, 0, sizeof(acb->reserved8));
2712        memset(acb->reserved9, 0, sizeof(acb->reserved9));
2713        memset(acb->reserved10, 0, sizeof(acb->reserved10));
2714        memset(acb->reserved11, 0, sizeof(acb->reserved11));
2715        memset(acb->reserved12, 0, sizeof(acb->reserved12));
2716        memset(acb->reserved13, 0, sizeof(acb->reserved13));
2717        memset(acb->reserved14, 0, sizeof(acb->reserved14));
2718        memset(acb->reserved15, 0, sizeof(acb->reserved15));
2719}
2720
2721static int
2722qla4xxx_iface_set_param(struct Scsi_Host *shost, void *data, uint32_t len)
2723{
2724        struct scsi_qla_host *ha = to_qla_host(shost);
2725        int rval = 0;
2726        struct iscsi_iface_param_info *iface_param = NULL;
2727        struct addr_ctrl_blk *init_fw_cb = NULL;
2728        dma_addr_t init_fw_cb_dma;
2729        uint32_t mbox_cmd[MBOX_REG_COUNT];
2730        uint32_t mbox_sts[MBOX_REG_COUNT];
2731        uint32_t rem = len;
2732        struct nlattr *attr;
2733
2734        init_fw_cb = dma_alloc_coherent(&ha->pdev->dev,
2735                                        sizeof(struct addr_ctrl_blk),
2736                                        &init_fw_cb_dma, GFP_KERNEL);
2737        if (!init_fw_cb) {
2738                ql4_printk(KERN_ERR, ha, "%s: Unable to alloc init_cb\n",
2739                           __func__);
2740                return -ENOMEM;
2741        }
2742
2743        memset(&mbox_cmd, 0, sizeof(mbox_cmd));
2744        memset(&mbox_sts, 0, sizeof(mbox_sts));
2745
2746        if (qla4xxx_get_ifcb(ha, &mbox_cmd[0], &mbox_sts[0], init_fw_cb_dma)) {
2747                ql4_printk(KERN_ERR, ha, "%s: get ifcb failed\n", __func__);
2748                rval = -EIO;
2749                goto exit_init_fw_cb;
2750        }
2751
2752        nla_for_each_attr(attr, data, len, rem) {
2753                iface_param = nla_data(attr);
2754
2755                if (iface_param->param_type == ISCSI_NET_PARAM) {
2756                        switch (iface_param->iface_type) {
2757                        case ISCSI_IFACE_TYPE_IPV4:
2758                                switch (iface_param->iface_num) {
2759                                case 0:
2760                                        qla4xxx_set_ipv4(ha, iface_param,
2761                                                         init_fw_cb);
2762                                        break;
2763                                default:
2764                                /* Cannot have more than one IPv4 interface */
2765                                        ql4_printk(KERN_ERR, ha,
2766                                                   "Invalid IPv4 iface number = %d\n",
2767                                                   iface_param->iface_num);
2768                                        break;
2769                                }
2770                                break;
2771                        case ISCSI_IFACE_TYPE_IPV6:
2772                                switch (iface_param->iface_num) {
2773                                case 0:
2774                                case 1:
2775                                        qla4xxx_set_ipv6(ha, iface_param,
2776                                                         init_fw_cb);
2777                                        break;
2778                                default:
2779                                /* Cannot have more than two IPv6 interface */
2780                                        ql4_printk(KERN_ERR, ha,
2781                                                   "Invalid IPv6 iface number = %d\n",
2782                                                   iface_param->iface_num);
2783                                        break;
2784                                }
2785                                break;
2786                        default:
2787                                ql4_printk(KERN_ERR, ha,
2788                                           "Invalid iface type\n");
2789                                break;
2790                        }
2791                } else if (iface_param->param_type == ISCSI_IFACE_PARAM) {
2792                                qla4xxx_set_iscsi_param(ha, iface_param,
2793                                                        init_fw_cb);
2794                } else {
2795                        continue;
2796                }
2797        }
2798
2799        init_fw_cb->cookie = cpu_to_le32(0x11BEAD5A);
2800
2801        rval = qla4xxx_set_flash(ha, init_fw_cb_dma, FLASH_SEGMENT_IFCB,
2802                                 sizeof(struct addr_ctrl_blk),
2803                                 FLASH_OPT_RMW_COMMIT);
2804        if (rval != QLA_SUCCESS) {
2805                ql4_printk(KERN_ERR, ha, "%s: set flash mbx failed\n",
2806                           __func__);
2807                rval = -EIO;
2808                goto exit_init_fw_cb;
2809        }
2810
2811        rval = qla4xxx_disable_acb(ha);
2812        if (rval != QLA_SUCCESS) {
2813                ql4_printk(KERN_ERR, ha, "%s: disable acb mbx failed\n",
2814                           __func__);
2815                rval = -EIO;
2816                goto exit_init_fw_cb;
2817        }
2818
2819        wait_for_completion_timeout(&ha->disable_acb_comp,
2820                                    DISABLE_ACB_TOV * HZ);
2821
2822        qla4xxx_initcb_to_acb(init_fw_cb);
2823
2824        rval = qla4xxx_set_acb(ha, &mbox_cmd[0], &mbox_sts[0], init_fw_cb_dma);
2825        if (rval != QLA_SUCCESS) {
2826                ql4_printk(KERN_ERR, ha, "%s: set acb mbx failed\n",
2827                           __func__);
2828                rval = -EIO;
2829                goto exit_init_fw_cb;
2830        }
2831
2832        memset(init_fw_cb, 0, sizeof(struct addr_ctrl_blk));
2833        qla4xxx_update_local_ifcb(ha, &mbox_cmd[0], &mbox_sts[0], init_fw_cb,
2834                                  init_fw_cb_dma);
2835
2836exit_init_fw_cb:
2837        dma_free_coherent(&ha->pdev->dev, sizeof(struct addr_ctrl_blk),
2838                          init_fw_cb, init_fw_cb_dma);
2839
2840        return rval;
2841}
2842
2843static int qla4xxx_session_get_param(struct iscsi_cls_session *cls_sess,
2844                                     enum iscsi_param param, char *buf)
2845{
2846        struct iscsi_session *sess = cls_sess->dd_data;
2847        struct ddb_entry *ddb_entry = sess->dd_data;
2848        struct scsi_qla_host *ha = ddb_entry->ha;
2849        struct iscsi_cls_conn *cls_conn = ddb_entry->conn;
2850        struct ql4_chap_table chap_tbl;
2851        int rval, len;
2852        uint16_t idx;
2853
2854        memset(&chap_tbl, 0, sizeof(chap_tbl));
2855        switch (param) {
2856        case ISCSI_PARAM_CHAP_IN_IDX:
2857                rval = qla4xxx_get_chap_index(ha, sess->username_in,
2858                                              sess->password_in, BIDI_CHAP,
2859                                              &idx);
2860                if (rval)
2861                        len = sprintf(buf, "\n");
2862                else
2863                        len = sprintf(buf, "%hu\n", idx);
2864                break;
2865        case ISCSI_PARAM_CHAP_OUT_IDX:
2866                if (ddb_entry->ddb_type == FLASH_DDB) {
2867                        if (ddb_entry->chap_tbl_idx != INVALID_ENTRY) {
2868                                idx = ddb_entry->chap_tbl_idx;
2869                                rval = QLA_SUCCESS;
2870                        } else {
2871                                rval = QLA_ERROR;
2872                        }
2873                } else {
2874                        rval = qla4xxx_get_chap_index(ha, sess->username,
2875                                                      sess->password,
2876                                                      LOCAL_CHAP, &idx);
2877                }
2878                if (rval)
2879                        len = sprintf(buf, "\n");
2880                else
2881                        len = sprintf(buf, "%hu\n", idx);
2882                break;
2883        case ISCSI_PARAM_USERNAME:
2884        case ISCSI_PARAM_PASSWORD:
2885                /* First, populate session username and password for FLASH DDB,
2886                 * if not already done. This happens when session login fails
2887                 * for a FLASH DDB.
2888                 */
2889                if (ddb_entry->ddb_type == FLASH_DDB &&
2890                    ddb_entry->chap_tbl_idx != INVALID_ENTRY &&
2891                    !sess->username && !sess->password) {
2892                        idx = ddb_entry->chap_tbl_idx;
2893                        rval = qla4xxx_get_uni_chap_at_index(ha, chap_tbl.name,
2894                                                            chap_tbl.secret,
2895                                                            idx);
2896                        if (!rval) {
2897                                iscsi_set_param(cls_conn, ISCSI_PARAM_USERNAME,
2898                                                (char *)chap_tbl.name,
2899                                                strlen((char *)chap_tbl.name));
2900                                iscsi_set_param(cls_conn, ISCSI_PARAM_PASSWORD,
2901                                                (char *)chap_tbl.secret,
2902                                                chap_tbl.secret_len);
2903                        }
2904                }
2905                fallthrough;
2906        default:
2907                return iscsi_session_get_param(cls_sess, param, buf);
2908        }
2909
2910        return len;
2911}
2912
2913static int qla4xxx_conn_get_param(struct iscsi_cls_conn *cls_conn,
2914                                  enum iscsi_param param, char *buf)
2915{
2916        struct iscsi_conn *conn;
2917        struct qla_conn *qla_conn;
2918        struct sockaddr *dst_addr;
2919
2920        conn = cls_conn->dd_data;
2921        qla_conn = conn->dd_data;
2922        dst_addr = (struct sockaddr *)&qla_conn->qla_ep->dst_addr;
2923
2924        switch (param) {
2925        case ISCSI_PARAM_CONN_PORT:
2926        case ISCSI_PARAM_CONN_ADDRESS:
2927                return iscsi_conn_get_addr_param((struct sockaddr_storage *)
2928                                                 dst_addr, param, buf);
2929        default:
2930                return iscsi_conn_get_param(cls_conn, param, buf);
2931        }
2932}
2933
2934int qla4xxx_get_ddb_index(struct scsi_qla_host *ha, uint16_t *ddb_index)
2935{
2936        uint32_t mbx_sts = 0;
2937        uint16_t tmp_ddb_index;
2938        int ret;
2939
2940get_ddb_index:
2941        tmp_ddb_index = find_first_zero_bit(ha->ddb_idx_map, MAX_DDB_ENTRIES);
2942
2943        if (tmp_ddb_index >= MAX_DDB_ENTRIES) {
2944                DEBUG2(ql4_printk(KERN_INFO, ha,
2945                                  "Free DDB index not available\n"));
2946                ret = QLA_ERROR;
2947                goto exit_get_ddb_index;
2948        }
2949
2950        if (test_and_set_bit(tmp_ddb_index, ha->ddb_idx_map))
2951                goto get_ddb_index;
2952
2953        DEBUG2(ql4_printk(KERN_INFO, ha,
2954                          "Found a free DDB index at %d\n", tmp_ddb_index));
2955        ret = qla4xxx_req_ddb_entry(ha, tmp_ddb_index, &mbx_sts);
2956        if (ret == QLA_ERROR) {
2957                if (mbx_sts == MBOX_STS_COMMAND_ERROR) {
2958                        ql4_printk(KERN_INFO, ha,
2959                                   "DDB index = %d not available trying next\n",
2960                                   tmp_ddb_index);
2961                        goto get_ddb_index;
2962                }
2963                DEBUG2(ql4_printk(KERN_INFO, ha,
2964                                  "Free FW DDB not available\n"));
2965        }
2966
2967        *ddb_index = tmp_ddb_index;
2968
2969exit_get_ddb_index:
2970        return ret;
2971}
2972
2973static int qla4xxx_match_ipaddress(struct scsi_qla_host *ha,
2974                                   struct ddb_entry *ddb_entry,
2975                                   char *existing_ipaddr,
2976                                   char *user_ipaddr)
2977{
2978        uint8_t dst_ipaddr[IPv6_ADDR_LEN];
2979        char formatted_ipaddr[DDB_IPADDR_LEN];
2980        int status = QLA_SUCCESS, ret = 0;
2981
2982        if (ddb_entry->fw_ddb_entry.options & DDB_OPT_IPV6_DEVICE) {
2983                ret = in6_pton(user_ipaddr, strlen(user_ipaddr), dst_ipaddr,
2984                               '\0', NULL);
2985                if (ret == 0) {
2986                        status = QLA_ERROR;
2987                        goto out_match;
2988                }
2989                ret = sprintf(formatted_ipaddr, "%pI6", dst_ipaddr);
2990        } else {
2991                ret = in4_pton(user_ipaddr, strlen(user_ipaddr), dst_ipaddr,
2992                               '\0', NULL);
2993                if (ret == 0) {
2994                        status = QLA_ERROR;
2995                        goto out_match;
2996                }
2997                ret = sprintf(formatted_ipaddr, "%pI4", dst_ipaddr);
2998        }
2999
3000        if (strcmp(existing_ipaddr, formatted_ipaddr))
3001                status = QLA_ERROR;
3002
3003out_match:
3004        return status;
3005}
3006
3007static int qla4xxx_match_fwdb_session(struct scsi_qla_host *ha,
3008                                      struct iscsi_cls_conn *cls_conn)
3009{
3010        int idx = 0, max_ddbs, rval;
3011        struct iscsi_cls_session *cls_sess = iscsi_conn_to_session(cls_conn);
3012        struct iscsi_session *sess, *existing_sess;
3013        struct iscsi_conn *conn, *existing_conn;
3014        struct ddb_entry *ddb_entry;
3015
3016        sess = cls_sess->dd_data;
3017        conn = cls_conn->dd_data;
3018
3019        if (sess->targetname == NULL ||
3020            conn->persistent_address == NULL ||
3021            conn->persistent_port == 0)
3022                return QLA_ERROR;
3023
3024        max_ddbs =  is_qla40XX(ha) ? MAX_DEV_DB_ENTRIES_40XX :
3025                                     MAX_DEV_DB_ENTRIES;
3026
3027        for (idx = 0; idx < max_ddbs; idx++) {
3028                ddb_entry = qla4xxx_lookup_ddb_by_fw_index(ha, idx);
3029                if (ddb_entry == NULL)
3030                        continue;
3031
3032                if (ddb_entry->ddb_type != FLASH_DDB)
3033                        continue;
3034
3035                existing_sess = ddb_entry->sess->dd_data;
3036                existing_conn = ddb_entry->conn->dd_data;
3037
3038                if (existing_sess->targetname == NULL ||
3039                    existing_conn->persistent_address == NULL ||
3040                    existing_conn->persistent_port == 0)
3041                        continue;
3042
3043                DEBUG2(ql4_printk(KERN_INFO, ha,
3044                                  "IQN = %s User IQN = %s\n",
3045                                  existing_sess->targetname,
3046                                  sess->targetname));
3047
3048                DEBUG2(ql4_printk(KERN_INFO, ha,
3049                                  "IP = %s User IP = %s\n",
3050                                  existing_conn->persistent_address,
3051                                  conn->persistent_address));
3052
3053                DEBUG2(ql4_printk(KERN_INFO, ha,
3054                                  "Port = %d User Port = %d\n",
3055                                  existing_conn->persistent_port,
3056                                  conn->persistent_port));
3057
3058                if (strcmp(existing_sess->targetname, sess->targetname))
3059                        continue;
3060                rval = qla4xxx_match_ipaddress(ha, ddb_entry,
3061                                        existing_conn->persistent_address,
3062                                        conn->persistent_address);
3063                if (rval == QLA_ERROR)
3064                        continue;
3065                if (existing_conn->persistent_port != conn->persistent_port)
3066                        continue;
3067                break;
3068        }
3069
3070        if (idx == max_ddbs)
3071                return QLA_ERROR;
3072
3073        DEBUG2(ql4_printk(KERN_INFO, ha,
3074                          "Match found in fwdb sessions\n"));
3075        return QLA_SUCCESS;
3076}
3077
3078static struct iscsi_cls_session *
3079qla4xxx_session_create(struct iscsi_endpoint *ep,
3080                        uint16_t cmds_max, uint16_t qdepth,
3081                        uint32_t initial_cmdsn)
3082{
3083        struct iscsi_cls_session *cls_sess;
3084        struct scsi_qla_host *ha;
3085        struct qla_endpoint *qla_ep;
3086        struct ddb_entry *ddb_entry;
3087        uint16_t ddb_index;
3088        struct iscsi_session *sess;
3089        int ret;
3090
3091        if (!ep) {
3092                printk(KERN_ERR "qla4xxx: missing ep.\n");
3093                return NULL;
3094        }
3095
3096        qla_ep = ep->dd_data;
3097        ha = to_qla_host(qla_ep->host);
3098        DEBUG2(ql4_printk(KERN_INFO, ha, "%s: host: %ld\n", __func__,
3099                          ha->host_no));
3100
3101        ret = qla4xxx_get_ddb_index(ha, &ddb_index);
3102        if (ret == QLA_ERROR)
3103                return NULL;
3104
3105        cls_sess = iscsi_session_setup(&qla4xxx_iscsi_transport, qla_ep->host,
3106                                       cmds_max, sizeof(struct ddb_entry),
3107                                       sizeof(struct ql4_task_data),
3108                                       initial_cmdsn, ddb_index);
3109        if (!cls_sess)
3110                return NULL;
3111
3112        sess = cls_sess->dd_data;
3113        ddb_entry = sess->dd_data;
3114        ddb_entry->fw_ddb_index = ddb_index;
3115        ddb_entry->fw_ddb_device_state = DDB_DS_NO_CONNECTION_ACTIVE;
3116        ddb_entry->ha = ha;
3117        ddb_entry->sess = cls_sess;
3118        ddb_entry->unblock_sess = qla4xxx_unblock_ddb;
3119        ddb_entry->ddb_change = qla4xxx_ddb_change;
3120        clear_bit(DDB_CONN_CLOSE_FAILURE, &ddb_entry->flags);
3121        cls_sess->recovery_tmo = ql4xsess_recovery_tmo;
3122        ha->fw_ddb_index_map[ddb_entry->fw_ddb_index] = ddb_entry;
3123        ha->tot_ddbs++;
3124
3125        return cls_sess;
3126}
3127
3128static void qla4xxx_session_destroy(struct iscsi_cls_session *cls_sess)
3129{
3130        struct iscsi_session *sess;
3131        struct ddb_entry *ddb_entry;
3132        struct scsi_qla_host *ha;
3133        unsigned long flags, wtime;
3134        struct dev_db_entry *fw_ddb_entry = NULL;
3135        dma_addr_t fw_ddb_entry_dma;
3136        uint32_t ddb_state;
3137        int ret;
3138
3139        sess = cls_sess->dd_data;
3140        ddb_entry = sess->dd_data;
3141        ha = ddb_entry->ha;
3142        DEBUG2(ql4_printk(KERN_INFO, ha, "%s: host: %ld\n", __func__,
3143                          ha->host_no));
3144
3145        fw_ddb_entry = dma_alloc_coherent(&ha->pdev->dev, sizeof(*fw_ddb_entry),
3146                                          &fw_ddb_entry_dma, GFP_KERNEL);
3147        if (!fw_ddb_entry) {
3148                ql4_printk(KERN_ERR, ha,
3149                           "%s: Unable to allocate dma buffer\n", __func__);
3150                goto destroy_session;
3151        }
3152
3153        wtime = jiffies + (HZ * LOGOUT_TOV);
3154        do {
3155                ret = qla4xxx_get_fwddb_entry(ha, ddb_entry->fw_ddb_index,
3156                                              fw_ddb_entry, fw_ddb_entry_dma,
3157                                              NULL, NULL, &ddb_state, NULL,
3158                                              NULL, NULL);
3159                if (ret == QLA_ERROR)
3160                        goto destroy_session;
3161
3162                if ((ddb_state == DDB_DS_NO_CONNECTION_ACTIVE) ||
3163                    (ddb_state == DDB_DS_SESSION_FAILED))
3164                        goto destroy_session;
3165
3166                schedule_timeout_uninterruptible(HZ);
3167        } while ((time_after(wtime, jiffies)));
3168
3169destroy_session:
3170        qla4xxx_clear_ddb_entry(ha, ddb_entry->fw_ddb_index);
3171        if (test_and_clear_bit(DDB_CONN_CLOSE_FAILURE, &ddb_entry->flags))
3172                clear_bit(ddb_entry->fw_ddb_index, ha->ddb_idx_map);
3173        spin_lock_irqsave(&ha->hardware_lock, flags);
3174        qla4xxx_free_ddb(ha, ddb_entry);
3175        spin_unlock_irqrestore(&ha->hardware_lock, flags);
3176
3177        iscsi_session_teardown(cls_sess);
3178
3179        if (fw_ddb_entry)
3180                dma_free_coherent(&ha->pdev->dev, sizeof(*fw_ddb_entry),
3181                                  fw_ddb_entry, fw_ddb_entry_dma);
3182}
3183
3184static struct iscsi_cls_conn *
3185qla4xxx_conn_create(struct iscsi_cls_session *cls_sess, uint32_t conn_idx)
3186{
3187        struct iscsi_cls_conn *cls_conn;
3188        struct iscsi_session *sess;
3189        struct ddb_entry *ddb_entry;
3190        struct scsi_qla_host *ha;
3191
3192        cls_conn = iscsi_conn_setup(cls_sess, sizeof(struct qla_conn),
3193                                    conn_idx);
3194        if (!cls_conn) {
3195                pr_info("%s: Can not create connection for conn_idx = %u\n",
3196                        __func__, conn_idx);
3197                return NULL;
3198        }
3199
3200        sess = cls_sess->dd_data;
3201        ddb_entry = sess->dd_data;
3202        ddb_entry->conn = cls_conn;
3203
3204        ha = ddb_entry->ha;
3205        DEBUG2(ql4_printk(KERN_INFO, ha, "%s: conn_idx = %u\n", __func__,
3206                          conn_idx));
3207        return cls_conn;
3208}
3209
3210static int qla4xxx_conn_bind(struct iscsi_cls_session *cls_session,
3211                             struct iscsi_cls_conn *cls_conn,
3212                             uint64_t transport_fd, int is_leading)
3213{
3214        struct iscsi_conn *conn;
3215        struct qla_conn *qla_conn;
3216        struct iscsi_endpoint *ep;
3217        struct ddb_entry *ddb_entry;
3218        struct scsi_qla_host *ha;
3219        struct iscsi_session *sess;
3220
3221        sess = cls_session->dd_data;
3222        ddb_entry = sess->dd_data;
3223        ha = ddb_entry->ha;
3224
3225        DEBUG2(ql4_printk(KERN_INFO, ha, "%s: sid = %d, cid = %d\n", __func__,
3226                          cls_session->sid, cls_conn->cid));
3227
3228        if (iscsi_conn_bind(cls_session, cls_conn, is_leading))
3229                return -EINVAL;
3230        ep = iscsi_lookup_endpoint(transport_fd);
3231        if (!ep)
3232                return -EINVAL;
3233        conn = cls_conn->dd_data;
3234        qla_conn = conn->dd_data;
3235        qla_conn->qla_ep = ep->dd_data;
3236        iscsi_put_endpoint(ep);
3237        return 0;
3238}
3239
3240static int qla4xxx_conn_start(struct iscsi_cls_conn *cls_conn)
3241{
3242        struct iscsi_cls_session *cls_sess = iscsi_conn_to_session(cls_conn);
3243        struct iscsi_session *sess;
3244        struct ddb_entry *ddb_entry;
3245        struct scsi_qla_host *ha;
3246        struct dev_db_entry *fw_ddb_entry = NULL;
3247        dma_addr_t fw_ddb_entry_dma;
3248        uint32_t mbx_sts = 0;
3249        int ret = 0;
3250        int status = QLA_SUCCESS;
3251
3252        sess = cls_sess->dd_data;
3253        ddb_entry = sess->dd_data;
3254        ha = ddb_entry->ha;
3255        DEBUG2(ql4_printk(KERN_INFO, ha, "%s: sid = %d, cid = %d\n", __func__,
3256                          cls_sess->sid, cls_conn->cid));
3257
3258        /* Check if we have  matching FW DDB, if yes then do not
3259         * login to this target. This could cause target to logout previous
3260         * connection
3261         */
3262        ret = qla4xxx_match_fwdb_session(ha, cls_conn);
3263        if (ret == QLA_SUCCESS) {
3264                ql4_printk(KERN_INFO, ha,
3265                           "Session already exist in FW.\n");
3266                ret = -EEXIST;
3267                goto exit_conn_start;
3268        }
3269
3270        fw_ddb_entry = dma_alloc_coherent(&ha->pdev->dev, sizeof(*fw_ddb_entry),
3271                                          &fw_ddb_entry_dma, GFP_KERNEL);
3272        if (!fw_ddb_entry) {
3273                ql4_printk(KERN_ERR, ha,
3274                           "%s: Unable to allocate dma buffer\n", __func__);
3275                ret = -ENOMEM;
3276                goto exit_conn_start;
3277        }
3278
3279        ret = qla4xxx_set_param_ddbentry(ha, ddb_entry, cls_conn, &mbx_sts);
3280        if (ret) {
3281                /* If iscsid is stopped and started then no need to do
3282                * set param again since ddb state will be already
3283                * active and FW does not allow set ddb to an
3284                * active session.
3285                */
3286                if (mbx_sts)
3287                        if (ddb_entry->fw_ddb_device_state ==
3288                                                DDB_DS_SESSION_ACTIVE) {
3289                                ddb_entry->unblock_sess(ddb_entry->sess);
3290                                goto exit_set_param;
3291                        }
3292
3293                ql4_printk(KERN_ERR, ha, "%s: Failed set param for index[%d]\n",
3294                           __func__, ddb_entry->fw_ddb_index);
3295                goto exit_conn_start;
3296        }
3297
3298        status = qla4xxx_conn_open(ha, ddb_entry->fw_ddb_index);
3299        if (status == QLA_ERROR) {
3300                ql4_printk(KERN_ERR, ha, "%s: Login failed: %s\n", __func__,
3301                           sess->targetname);
3302                ret = -EINVAL;
3303                goto exit_conn_start;
3304        }
3305
3306        if (ddb_entry->fw_ddb_device_state == DDB_DS_NO_CONNECTION_ACTIVE)
3307                ddb_entry->fw_ddb_device_state = DDB_DS_LOGIN_IN_PROCESS;
3308
3309        DEBUG2(printk(KERN_INFO "%s: DDB state [%d]\n", __func__,
3310                      ddb_entry->fw_ddb_device_state));
3311
3312exit_set_param:
3313        ret = 0;
3314
3315exit_conn_start:
3316        if (fw_ddb_entry)
3317                dma_free_coherent(&ha->pdev->dev, sizeof(*fw_ddb_entry),
3318                                  fw_ddb_entry, fw_ddb_entry_dma);
3319        return ret;
3320}
3321
3322static void qla4xxx_conn_destroy(struct iscsi_cls_conn *cls_conn)
3323{
3324        struct iscsi_cls_session *cls_sess = iscsi_conn_to_session(cls_conn);
3325        struct iscsi_session *sess;
3326        struct scsi_qla_host *ha;
3327        struct ddb_entry *ddb_entry;
3328        int options;
3329
3330        sess = cls_sess->dd_data;
3331        ddb_entry = sess->dd_data;
3332        ha = ddb_entry->ha;
3333        DEBUG2(ql4_printk(KERN_INFO, ha, "%s: cid = %d\n", __func__,
3334                          cls_conn->cid));
3335
3336        options = LOGOUT_OPTION_CLOSE_SESSION;
3337        if (qla4xxx_session_logout_ddb(ha, ddb_entry, options) == QLA_ERROR)
3338                ql4_printk(KERN_ERR, ha, "%s: Logout failed\n", __func__);
3339}
3340
3341static void qla4xxx_task_work(struct work_struct *wdata)
3342{
3343        struct ql4_task_data *task_data;
3344        struct scsi_qla_host *ha;
3345        struct passthru_status *sts;
3346        struct iscsi_task *task;
3347        struct iscsi_hdr *hdr;
3348        uint8_t *data;
3349        uint32_t data_len;
3350        struct iscsi_conn *conn;
3351        int hdr_len;
3352        itt_t itt;
3353
3354        task_data = container_of(wdata, struct ql4_task_data, task_work);
3355        ha = task_data->ha;
3356        task = task_data->task;
3357        sts = &task_data->sts;
3358        hdr_len = sizeof(struct iscsi_hdr);
3359
3360        DEBUG3(printk(KERN_INFO "Status returned\n"));
3361        DEBUG3(qla4xxx_dump_buffer(sts, 64));
3362        DEBUG3(printk(KERN_INFO "Response buffer"));
3363        DEBUG3(qla4xxx_dump_buffer(task_data->resp_buffer, 64));
3364
3365        conn = task->conn;
3366
3367        switch (sts->completionStatus) {
3368        case PASSTHRU_STATUS_COMPLETE:
3369                hdr = (struct iscsi_hdr *)task_data->resp_buffer;
3370                /* Assign back the itt in hdr, until we use the PREASSIGN_TAG */
3371                itt = sts->handle;
3372                hdr->itt = itt;
3373                data = task_data->resp_buffer + hdr_len;
3374                data_len = task_data->resp_len - hdr_len;
3375                iscsi_complete_pdu(conn, hdr, data, data_len);
3376                break;
3377        default:
3378                ql4_printk(KERN_ERR, ha, "Passthru failed status = 0x%x\n",
3379                           sts->completionStatus);
3380                break;
3381        }
3382        return;
3383}
3384
3385static int qla4xxx_alloc_pdu(struct iscsi_task *task, uint8_t opcode)
3386{
3387        struct ql4_task_data *task_data;
3388        struct iscsi_session *sess;
3389        struct ddb_entry *ddb_entry;
3390        struct scsi_qla_host *ha;
3391        int hdr_len;
3392
3393        sess = task->conn->session;
3394        ddb_entry = sess->dd_data;
3395        ha = ddb_entry->ha;
3396        task_data = task->dd_data;
3397        memset(task_data, 0, sizeof(struct ql4_task_data));
3398
3399        if (task->sc) {
3400                ql4_printk(KERN_INFO, ha,
3401                           "%s: SCSI Commands not implemented\n", __func__);
3402                return -EINVAL;
3403        }
3404
3405        hdr_len = sizeof(struct iscsi_hdr);
3406        task_data->ha = ha;
3407        task_data->task = task;
3408
3409        if (task->data_count) {
3410                task_data->data_dma = dma_map_single(&ha->pdev->dev, task->data,
3411                                                     task->data_count,
3412                                                     DMA_TO_DEVICE);
3413        }
3414
3415        DEBUG2(ql4_printk(KERN_INFO, ha, "%s: MaxRecvLen %u, iscsi hrd %d\n",
3416                      __func__, task->conn->max_recv_dlength, hdr_len));
3417
3418        task_data->resp_len = task->conn->max_recv_dlength + hdr_len;
3419        task_data->resp_buffer = dma_alloc_coherent(&ha->pdev->dev,
3420                                                    task_data->resp_len,
3421                                                    &task_data->resp_dma,
3422                                                    GFP_ATOMIC);
3423        if (!task_data->resp_buffer)
3424                goto exit_alloc_pdu;
3425
3426        task_data->req_len = task->data_count + hdr_len;
3427        task_data->req_buffer = dma_alloc_coherent(&ha->pdev->dev,
3428                                                   task_data->req_len,
3429                                                   &task_data->req_dma,
3430                                                   GFP_ATOMIC);
3431        if (!task_data->req_buffer)
3432                goto exit_alloc_pdu;
3433
3434        task->hdr = task_data->req_buffer;
3435
3436        INIT_WORK(&task_data->task_work, qla4xxx_task_work);
3437
3438        return 0;
3439
3440exit_alloc_pdu:
3441        if (task_data->resp_buffer)
3442                dma_free_coherent(&ha->pdev->dev, task_data->resp_len,
3443                                  task_data->resp_buffer, task_data->resp_dma);
3444
3445        if (task_data->req_buffer)
3446                dma_free_coherent(&ha->pdev->dev, task_data->req_len,
3447                                  task_data->req_buffer, task_data->req_dma);
3448        return -ENOMEM;
3449}
3450
3451static void qla4xxx_task_cleanup(struct iscsi_task *task)
3452{
3453        struct ql4_task_data *task_data;
3454        struct iscsi_session *sess;
3455        struct ddb_entry *ddb_entry;
3456        struct scsi_qla_host *ha;
3457        int hdr_len;
3458
3459        hdr_len = sizeof(struct iscsi_hdr);
3460        sess = task->conn->session;
3461        ddb_entry = sess->dd_data;
3462        ha = ddb_entry->ha;
3463        task_data = task->dd_data;
3464
3465        if (task->data_count) {
3466                dma_unmap_single(&ha->pdev->dev, task_data->data_dma,
3467                                 task->data_count, DMA_TO_DEVICE);
3468        }
3469
3470        DEBUG2(ql4_printk(KERN_INFO, ha, "%s: MaxRecvLen %u, iscsi hrd %d\n",
3471                      __func__, task->conn->max_recv_dlength, hdr_len));
3472
3473        dma_free_coherent(&ha->pdev->dev, task_data->resp_len,
3474                          task_data->resp_buffer, task_data->resp_dma);
3475        dma_free_coherent(&ha->pdev->dev, task_data->req_len,
3476                          task_data->req_buffer, task_data->req_dma);
3477        return;
3478}
3479
3480static int qla4xxx_task_xmit(struct iscsi_task *task)
3481{
3482        struct scsi_cmnd *sc = task->sc;
3483        struct iscsi_session *sess = task->conn->session;
3484        struct ddb_entry *ddb_entry = sess->dd_data;
3485        struct scsi_qla_host *ha = ddb_entry->ha;
3486
3487        if (!sc)
3488                return qla4xxx_send_passthru0(task);
3489
3490        ql4_printk(KERN_INFO, ha, "%s: scsi cmd xmit not implemented\n",
3491                   __func__);
3492        return -ENOSYS;
3493}
3494
3495static int qla4xxx_copy_from_fwddb_param(struct iscsi_bus_flash_session *sess,
3496                                         struct iscsi_bus_flash_conn *conn,
3497                                         struct dev_db_entry *fw_ddb_entry)
3498{
3499        unsigned long options = 0;
3500        int rc = 0;
3501
3502        options = le16_to_cpu(fw_ddb_entry->options);
3503        conn->is_fw_assigned_ipv6 = test_bit(OPT_IS_FW_ASSIGNED_IPV6, &options);
3504        if (test_bit(OPT_IPV6_DEVICE, &options)) {
3505                rc = iscsi_switch_str_param(&sess->portal_type,
3506                                            PORTAL_TYPE_IPV6);
3507                if (rc)
3508                        goto exit_copy;
3509        } else {
3510                rc = iscsi_switch_str_param(&sess->portal_type,
3511                                            PORTAL_TYPE_IPV4);
3512                if (rc)
3513                        goto exit_copy;
3514        }
3515
3516        sess->auto_snd_tgt_disable = test_bit(OPT_AUTO_SENDTGTS_DISABLE,
3517                                              &options);
3518        sess->discovery_sess = test_bit(OPT_DISC_SESSION, &options);
3519        sess->entry_state = test_bit(OPT_ENTRY_STATE, &options);
3520
3521        options = le16_to_cpu(fw_ddb_entry->iscsi_options);
3522        conn->hdrdgst_en = test_bit(ISCSIOPT_HEADER_DIGEST_EN, &options);
3523        conn->datadgst_en = test_bit(ISCSIOPT_DATA_DIGEST_EN, &options);
3524        sess->imm_data_en = test_bit(ISCSIOPT_IMMEDIATE_DATA_EN, &options);
3525        sess->initial_r2t_en = test_bit(ISCSIOPT_INITIAL_R2T_EN, &options);
3526        sess->dataseq_inorder_en = test_bit(ISCSIOPT_DATA_SEQ_IN_ORDER,
3527                                            &options);
3528        sess->pdu_inorder_en = test_bit(ISCSIOPT_DATA_PDU_IN_ORDER, &options);
3529        sess->chap_auth_en = test_bit(ISCSIOPT_CHAP_AUTH_EN, &options);
3530        conn->snack_req_en = test_bit(ISCSIOPT_SNACK_REQ_EN, &options);
3531        sess->discovery_logout_en = test_bit(ISCSIOPT_DISCOVERY_LOGOUT_EN,
3532                                             &options);
3533        sess->bidi_chap_en = test_bit(ISCSIOPT_BIDI_CHAP_EN, &options);
3534        sess->discovery_auth_optional =
3535                        test_bit(ISCSIOPT_DISCOVERY_AUTH_OPTIONAL, &options);
3536        if (test_bit(ISCSIOPT_ERL1, &options))
3537                sess->erl |= BIT_1;
3538        if (test_bit(ISCSIOPT_ERL0, &options))
3539                sess->erl |= BIT_0;
3540
3541        options = le16_to_cpu(fw_ddb_entry->tcp_options);
3542        conn->tcp_timestamp_stat = test_bit(TCPOPT_TIMESTAMP_STAT, &options);
3543        conn->tcp_nagle_disable = test_bit(TCPOPT_NAGLE_DISABLE, &options);
3544        conn->tcp_wsf_disable = test_bit(TCPOPT_WSF_DISABLE, &options);
3545        if (test_bit(TCPOPT_TIMER_SCALE3, &options))
3546                conn->tcp_timer_scale |= BIT_3;
3547        if (test_bit(TCPOPT_TIMER_SCALE2, &options))
3548                conn->tcp_timer_scale |= BIT_2;
3549        if (test_bit(TCPOPT_TIMER_SCALE1, &options))
3550                conn->tcp_timer_scale |= BIT_1;
3551
3552        conn->tcp_timer_scale >>= 1;
3553        conn->tcp_timestamp_en = test_bit(TCPOPT_TIMESTAMP_EN, &options);
3554
3555        options = le16_to_cpu(fw_ddb_entry->ip_options);
3556        conn->fragment_disable = test_bit(IPOPT_FRAGMENT_DISABLE, &options);
3557
3558        conn->max_recv_dlength = BYTE_UNITS *
3559                          le16_to_cpu(fw_ddb_entry->iscsi_max_rcv_data_seg_len);
3560        conn->max_xmit_dlength = BYTE_UNITS *
3561                          le16_to_cpu(fw_ddb_entry->iscsi_max_snd_data_seg_len);
3562        sess->first_burst = BYTE_UNITS *
3563                               le16_to_cpu(fw_ddb_entry->iscsi_first_burst_len);
3564        sess->max_burst = BYTE_UNITS *
3565                                 le16_to_cpu(fw_ddb_entry->iscsi_max_burst_len);
3566        sess->max_r2t = le16_to_cpu(fw_ddb_entry->iscsi_max_outsnd_r2t);
3567        sess->time2wait = le16_to_cpu(fw_ddb_entry->iscsi_def_time2wait);
3568        sess->time2retain = le16_to_cpu(fw_ddb_entry->iscsi_def_time2retain);
3569        sess->tpgt = le32_to_cpu(fw_ddb_entry->tgt_portal_grp);
3570        conn->max_segment_size = le16_to_cpu(fw_ddb_entry->mss);
3571        conn->tcp_xmit_wsf = fw_ddb_entry->tcp_xmt_wsf;
3572        conn->tcp_recv_wsf = fw_ddb_entry->tcp_rcv_wsf;
3573        conn->ipv6_flow_label = le16_to_cpu(fw_ddb_entry->ipv6_flow_lbl);
3574        conn->keepalive_timeout = le16_to_cpu(fw_ddb_entry->ka_timeout);
3575        conn->local_port = le16_to_cpu(fw_ddb_entry->lcl_port);
3576        conn->statsn = le32_to_cpu(fw_ddb_entry->stat_sn);
3577        conn->exp_statsn = le32_to_cpu(fw_ddb_entry->exp_stat_sn);
3578        sess->discovery_parent_idx = le16_to_cpu(fw_ddb_entry->ddb_link);
3579        sess->discovery_parent_type = le16_to_cpu(fw_ddb_entry->ddb_link);
3580        sess->chap_out_idx = le16_to_cpu(fw_ddb_entry->chap_tbl_idx);
3581        sess->tsid = le16_to_cpu(fw_ddb_entry->tsid);
3582
3583        sess->default_taskmgmt_timeout =
3584                                le16_to_cpu(fw_ddb_entry->def_timeout);
3585        conn->port = le16_to_cpu(fw_ddb_entry->port);
3586
3587        options = le16_to_cpu(fw_ddb_entry->options);
3588        conn->ipaddress = kzalloc(IPv6_ADDR_LEN, GFP_KERNEL);
3589        if (!conn->ipaddress) {
3590                rc = -ENOMEM;
3591                goto exit_copy;
3592        }
3593
3594        conn->redirect_ipaddr = kzalloc(IPv6_ADDR_LEN, GFP_KERNEL);
3595        if (!conn->redirect_ipaddr) {
3596                rc = -ENOMEM;
3597                goto exit_copy;
3598        }
3599
3600        memcpy(conn->ipaddress, fw_ddb_entry->ip_addr, IPv6_ADDR_LEN);
3601        memcpy(conn->redirect_ipaddr, fw_ddb_entry->tgt_addr, IPv6_ADDR_LEN);
3602
3603        if (test_bit(OPT_IPV6_DEVICE, &options)) {
3604                conn->ipv6_traffic_class = fw_ddb_entry->ipv4_tos;
3605
3606                conn->link_local_ipv6_addr = kmemdup(
3607                                        fw_ddb_entry->link_local_ipv6_addr,
3608                                        IPv6_ADDR_LEN, GFP_KERNEL);
3609                if (!conn->link_local_ipv6_addr) {
3610                        rc = -ENOMEM;
3611                        goto exit_copy;
3612                }
3613        } else {
3614                conn->ipv4_tos = fw_ddb_entry->ipv4_tos;
3615        }
3616
3617        if (fw_ddb_entry->iscsi_name[0]) {
3618                rc = iscsi_switch_str_param(&sess->targetname,
3619                                            (char *)fw_ddb_entry->iscsi_name);
3620                if (rc)
3621                        goto exit_copy;
3622        }
3623
3624        if (fw_ddb_entry->iscsi_alias[0]) {
3625                rc = iscsi_switch_str_param(&sess->targetalias,
3626                                            (char *)fw_ddb_entry->iscsi_alias);
3627                if (rc)
3628                        goto exit_copy;
3629        }
3630
3631        COPY_ISID(sess->isid, fw_ddb_entry->isid);
3632
3633exit_copy:
3634        return rc;
3635}
3636
3637static int qla4xxx_copy_to_fwddb_param(struct iscsi_bus_flash_session *sess,
3638                                       struct iscsi_bus_flash_conn *conn,
3639                                       struct dev_db_entry *fw_ddb_entry)
3640{
3641        uint16_t options;
3642        int rc = 0;
3643
3644        options = le16_to_cpu(fw_ddb_entry->options);
3645        SET_BITVAL(conn->is_fw_assigned_ipv6,  options, BIT_11);
3646        if (!strncmp(sess->portal_type, PORTAL_TYPE_IPV6, 4))
3647                options |= BIT_8;
3648        else
3649                options &= ~BIT_8;
3650
3651        SET_BITVAL(sess->auto_snd_tgt_disable, options, BIT_6);
3652        SET_BITVAL(sess->discovery_sess, options, BIT_4);
3653        SET_BITVAL(sess->entry_state, options, BIT_3);
3654        fw_ddb_entry->options = cpu_to_le16(options);
3655
3656        options = le16_to_cpu(fw_ddb_entry->iscsi_options);
3657        SET_BITVAL(conn->hdrdgst_en, options, BIT_13);
3658        SET_BITVAL(conn->datadgst_en, options, BIT_12);
3659        SET_BITVAL(sess->imm_data_en, options, BIT_11);
3660        SET_BITVAL(sess->initial_r2t_en, options, BIT_10);
3661        SET_BITVAL(sess->dataseq_inorder_en, options, BIT_9);
3662        SET_BITVAL(sess->pdu_inorder_en, options, BIT_8);
3663        SET_BITVAL(sess->chap_auth_en, options, BIT_7);
3664        SET_BITVAL(conn->snack_req_en, options, BIT_6);
3665        SET_BITVAL(sess->discovery_logout_en, options, BIT_5);
3666        SET_BITVAL(sess->bidi_chap_en, options, BIT_4);
3667        SET_BITVAL(sess->discovery_auth_optional, options, BIT_3);
3668        SET_BITVAL(sess->erl & BIT_1, options, BIT_1);
3669        SET_BITVAL(sess->erl & BIT_0, options, BIT_0);
3670        fw_ddb_entry->iscsi_options = cpu_to_le16(options);
3671
3672        options = le16_to_cpu(fw_ddb_entry->tcp_options);
3673        SET_BITVAL(conn->tcp_timestamp_stat, options, BIT_6);
3674        SET_BITVAL(conn->tcp_nagle_disable, options, BIT_5);
3675        SET_BITVAL(conn->tcp_wsf_disable, options, BIT_4);
3676        SET_BITVAL(conn->tcp_timer_scale & BIT_2, options, BIT_3);
3677        SET_BITVAL(conn->tcp_timer_scale & BIT_1, options, BIT_2);
3678        SET_BITVAL(conn->tcp_timer_scale & BIT_0, options, BIT_1);
3679        SET_BITVAL(conn->tcp_timestamp_en, options, BIT_0);
3680        fw_ddb_entry->tcp_options = cpu_to_le16(options);
3681
3682        options = le16_to_cpu(fw_ddb_entry->ip_options);
3683        SET_BITVAL(conn->fragment_disable, options, BIT_4);
3684        fw_ddb_entry->ip_options = cpu_to_le16(options);
3685
3686        fw_ddb_entry->iscsi_max_outsnd_r2t = cpu_to_le16(sess->max_r2t);
3687        fw_ddb_entry->iscsi_max_rcv_data_seg_len =
3688                               cpu_to_le16(conn->max_recv_dlength / BYTE_UNITS);
3689        fw_ddb_entry->iscsi_max_snd_data_seg_len =
3690                               cpu_to_le16(conn->max_xmit_dlength / BYTE_UNITS);
3691        fw_ddb_entry->iscsi_first_burst_len =
3692                                cpu_to_le16(sess->first_burst / BYTE_UNITS);
3693        fw_ddb_entry->iscsi_max_burst_len = cpu_to_le16(sess->max_burst /
3694                                            BYTE_UNITS);
3695        fw_ddb_entry->iscsi_def_time2wait = cpu_to_le16(sess->time2wait);
3696        fw_ddb_entry->iscsi_def_time2retain = cpu_to_le16(sess->time2retain);
3697        fw_ddb_entry->tgt_portal_grp = cpu_to_le16(sess->tpgt);
3698        fw_ddb_entry->mss = cpu_to_le16(conn->max_segment_size);
3699        fw_ddb_entry->tcp_xmt_wsf = (uint8_t) cpu_to_le32(conn->tcp_xmit_wsf);
3700        fw_ddb_entry->tcp_rcv_wsf = (uint8_t) cpu_to_le32(conn->tcp_recv_wsf);
3701        fw_ddb_entry->ipv6_flow_lbl = cpu_to_le16(conn->ipv6_flow_label);
3702        fw_ddb_entry->ka_timeout = cpu_to_le16(conn->keepalive_timeout);
3703        fw_ddb_entry->lcl_port = cpu_to_le16(conn->local_port);
3704        fw_ddb_entry->stat_sn = cpu_to_le32(conn->statsn);
3705        fw_ddb_entry->exp_stat_sn = cpu_to_le32(conn->exp_statsn);
3706        fw_ddb_entry->ddb_link = cpu_to_le16(sess->discovery_parent_idx);
3707        fw_ddb_entry->chap_tbl_idx = cpu_to_le16(sess->chap_out_idx);
3708        fw_ddb_entry->tsid = cpu_to_le16(sess->tsid);
3709        fw_ddb_entry->port = cpu_to_le16(conn->port);
3710        fw_ddb_entry->def_timeout =
3711                                cpu_to_le16(sess->default_taskmgmt_timeout);
3712
3713        if (!strncmp(sess->portal_type, PORTAL_TYPE_IPV6, 4))
3714                fw_ddb_entry->ipv4_tos = conn->ipv6_traffic_class;
3715        else
3716                fw_ddb_entry->ipv4_tos = conn->ipv4_tos;
3717
3718        if (conn->ipaddress)
3719                memcpy(fw_ddb_entry->ip_addr, conn->ipaddress,
3720                       sizeof(fw_ddb_entry->ip_addr));
3721
3722        if (conn->redirect_ipaddr)
3723                memcpy(fw_ddb_entry->tgt_addr, conn->redirect_ipaddr,
3724                       sizeof(fw_ddb_entry->tgt_addr));
3725
3726        if (conn->link_local_ipv6_addr)
3727                memcpy(fw_ddb_entry->link_local_ipv6_addr,
3728                       conn->link_local_ipv6_addr,
3729                       sizeof(fw_ddb_entry->link_local_ipv6_addr));
3730
3731        if (sess->targetname)
3732                memcpy(fw_ddb_entry->iscsi_name, sess->targetname,
3733                       sizeof(fw_ddb_entry->iscsi_name));
3734
3735        if (sess->targetalias)
3736                memcpy(fw_ddb_entry->iscsi_alias, sess->targetalias,
3737                       sizeof(fw_ddb_entry->iscsi_alias));
3738
3739        COPY_ISID(fw_ddb_entry->isid, sess->isid);
3740
3741        return rc;
3742}
3743
3744static void qla4xxx_copy_to_sess_conn_params(struct iscsi_conn *conn,
3745                                             struct iscsi_session *sess,
3746                                             struct dev_db_entry *fw_ddb_entry)
3747{
3748        unsigned long options = 0;
3749        uint16_t ddb_link;
3750        uint16_t disc_parent;
3751        char ip_addr[DDB_IPADDR_LEN];
3752
3753        options = le16_to_cpu(fw_ddb_entry->options);
3754        conn->is_fw_assigned_ipv6 = test_bit(OPT_IS_FW_ASSIGNED_IPV6, &options);
3755        sess->auto_snd_tgt_disable = test_bit(OPT_AUTO_SENDTGTS_DISABLE,
3756                                              &options);
3757        sess->discovery_sess = test_bit(OPT_DISC_SESSION, &options);
3758
3759        options = le16_to_cpu(fw_ddb_entry->iscsi_options);
3760        conn->hdrdgst_en = test_bit(ISCSIOPT_HEADER_DIGEST_EN, &options);
3761        conn->datadgst_en = test_bit(ISCSIOPT_DATA_DIGEST_EN, &options);
3762        sess->imm_data_en = test_bit(ISCSIOPT_IMMEDIATE_DATA_EN, &options);
3763        sess->initial_r2t_en = test_bit(ISCSIOPT_INITIAL_R2T_EN, &options);
3764        sess->dataseq_inorder_en = test_bit(ISCSIOPT_DATA_SEQ_IN_ORDER,
3765                                            &options);
3766        sess->pdu_inorder_en = test_bit(ISCSIOPT_DATA_PDU_IN_ORDER, &options);
3767        sess->chap_auth_en = test_bit(ISCSIOPT_CHAP_AUTH_EN, &options);
3768        sess->discovery_logout_en = test_bit(ISCSIOPT_DISCOVERY_LOGOUT_EN,
3769                                             &options);
3770        sess->bidi_chap_en = test_bit(ISCSIOPT_BIDI_CHAP_EN, &options);
3771        sess->discovery_auth_optional =
3772                        test_bit(ISCSIOPT_DISCOVERY_AUTH_OPTIONAL, &options);
3773        if (test_bit(ISCSIOPT_ERL1, &options))
3774                sess->erl |= BIT_1;
3775        if (test_bit(ISCSIOPT_ERL0, &options))
3776                sess->erl |= BIT_0;
3777
3778        options = le16_to_cpu(fw_ddb_entry->tcp_options);
3779        conn->tcp_timestamp_stat = test_bit(TCPOPT_TIMESTAMP_STAT, &options);
3780        conn->tcp_nagle_disable = test_bit(TCPOPT_NAGLE_DISABLE, &options);
3781        conn->tcp_wsf_disable = test_bit(TCPOPT_WSF_DISABLE, &options);
3782        if (test_bit(TCPOPT_TIMER_SCALE3, &options))
3783                conn->tcp_timer_scale |= BIT_3;
3784        if (test_bit(TCPOPT_TIMER_SCALE2, &options))
3785                conn->tcp_timer_scale |= BIT_2;
3786        if (test_bit(TCPOPT_TIMER_SCALE1, &options))
3787                conn->tcp_timer_scale |= BIT_1;
3788
3789        conn->tcp_timer_scale >>= 1;
3790        conn->tcp_timestamp_en = test_bit(TCPOPT_TIMESTAMP_EN, &options);
3791
3792        options = le16_to_cpu(fw_ddb_entry->ip_options);
3793        conn->fragment_disable = test_bit(IPOPT_FRAGMENT_DISABLE, &options);
3794
3795        conn->max_recv_dlength = BYTE_UNITS *
3796                          le16_to_cpu(fw_ddb_entry->iscsi_max_rcv_data_seg_len);
3797        conn->max_xmit_dlength = BYTE_UNITS *
3798                          le16_to_cpu(fw_ddb_entry->iscsi_max_snd_data_seg_len);
3799        sess->max_r2t = le16_to_cpu(fw_ddb_entry->iscsi_max_outsnd_r2t);
3800        sess->first_burst = BYTE_UNITS *
3801                               le16_to_cpu(fw_ddb_entry->iscsi_first_burst_len);
3802        sess->max_burst = BYTE_UNITS *
3803                                 le16_to_cpu(fw_ddb_entry->iscsi_max_burst_len);
3804        sess->time2wait = le16_to_cpu(fw_ddb_entry->iscsi_def_time2wait);
3805        sess->time2retain = le16_to_cpu(fw_ddb_entry->iscsi_def_time2retain);
3806        sess->tpgt = le32_to_cpu(fw_ddb_entry->tgt_portal_grp);
3807        conn->max_segment_size = le16_to_cpu(fw_ddb_entry->mss);
3808        conn->tcp_xmit_wsf = fw_ddb_entry->tcp_xmt_wsf;
3809        conn->tcp_recv_wsf = fw_ddb_entry->tcp_rcv_wsf;
3810        conn->ipv4_tos = fw_ddb_entry->ipv4_tos;
3811        conn->keepalive_tmo = le16_to_cpu(fw_ddb_entry->ka_timeout);
3812        conn->local_port = le16_to_cpu(fw_ddb_entry->lcl_port);
3813        conn->statsn = le32_to_cpu(fw_ddb_entry->stat_sn);
3814        conn->exp_statsn = le32_to_cpu(fw_ddb_entry->exp_stat_sn);
3815        sess->tsid = le16_to_cpu(fw_ddb_entry->tsid);
3816        COPY_ISID(sess->isid, fw_ddb_entry->isid);
3817
3818        ddb_link = le16_to_cpu(fw_ddb_entry->ddb_link);
3819        if (ddb_link == DDB_ISNS)
3820                disc_parent = ISCSI_DISC_PARENT_ISNS;
3821        else if (ddb_link == DDB_NO_LINK)
3822                disc_parent = ISCSI_DISC_PARENT_UNKNOWN;
3823        else if (ddb_link < MAX_DDB_ENTRIES)
3824                disc_parent = ISCSI_DISC_PARENT_SENDTGT;
3825        else
3826                disc_parent = ISCSI_DISC_PARENT_UNKNOWN;
3827
3828        iscsi_set_param(conn->cls_conn, ISCSI_PARAM_DISCOVERY_PARENT_TYPE,
3829                        iscsi_get_discovery_parent_name(disc_parent), 0);
3830
3831        iscsi_set_param(conn->cls_conn, ISCSI_PARAM_TARGET_ALIAS,
3832                        (char *)fw_ddb_entry->iscsi_alias, 0);
3833
3834        options = le16_to_cpu(fw_ddb_entry->options);
3835        if (options & DDB_OPT_IPV6_DEVICE) {
3836                memset(ip_addr, 0, sizeof(ip_addr));
3837                sprintf(ip_addr, "%pI6", fw_ddb_entry->link_local_ipv6_addr);
3838                iscsi_set_param(conn->cls_conn, ISCSI_PARAM_LOCAL_IPADDR,
3839                                (char *)ip_addr, 0);
3840        }
3841}
3842
3843static void qla4xxx_copy_fwddb_param(struct scsi_qla_host *ha,
3844                                     struct dev_db_entry *fw_ddb_entry,
3845                                     struct iscsi_cls_session *cls_sess,
3846                                     struct iscsi_cls_conn *cls_conn)
3847{
3848        int buflen = 0;
3849        struct iscsi_session *sess;
3850        struct ddb_entry *ddb_entry;
3851        struct ql4_chap_table chap_tbl;
3852        struct iscsi_conn *conn;
3853        char ip_addr[DDB_IPADDR_LEN];
3854        uint16_t options = 0;
3855
3856        sess = cls_sess->dd_data;
3857        ddb_entry = sess->dd_data;
3858        conn = cls_conn->dd_data;
3859        memset(&chap_tbl, 0, sizeof(chap_tbl));
3860
3861        ddb_entry->chap_tbl_idx = le16_to_cpu(fw_ddb_entry->chap_tbl_idx);
3862
3863        qla4xxx_copy_to_sess_conn_params(conn, sess, fw_ddb_entry);
3864
3865        sess->def_taskmgmt_tmo = le16_to_cpu(fw_ddb_entry->def_timeout);
3866        conn->persistent_port = le16_to_cpu(fw_ddb_entry->port);
3867
3868        memset(ip_addr, 0, sizeof(ip_addr));
3869        options = le16_to_cpu(fw_ddb_entry->options);
3870        if (options & DDB_OPT_IPV6_DEVICE) {
3871                iscsi_set_param(cls_conn, ISCSI_PARAM_PORTAL_TYPE, "ipv6", 4);
3872
3873                memset(ip_addr, 0, sizeof(ip_addr));
3874                sprintf(ip_addr, "%pI6", fw_ddb_entry->ip_addr);
3875        } else {
3876                iscsi_set_param(cls_conn, ISCSI_PARAM_PORTAL_TYPE, "ipv4", 4);
3877                sprintf(ip_addr, "%pI4", fw_ddb_entry->ip_addr);
3878        }
3879
3880        iscsi_set_param(cls_conn, ISCSI_PARAM_PERSISTENT_ADDRESS,
3881                        (char *)ip_addr, buflen);
3882        iscsi_set_param(cls_conn, ISCSI_PARAM_TARGET_NAME,
3883                        (char *)fw_ddb_entry->iscsi_name, buflen);
3884        iscsi_set_param(cls_conn, ISCSI_PARAM_INITIATOR_NAME,
3885                        (char *)ha->name_string, buflen);
3886
3887        if (ddb_entry->chap_tbl_idx != INVALID_ENTRY) {
3888                if (!qla4xxx_get_uni_chap_at_index(ha, chap_tbl.name,
3889                                                   chap_tbl.secret,
3890                                                   ddb_entry->chap_tbl_idx)) {
3891                        iscsi_set_param(cls_conn, ISCSI_PARAM_USERNAME,
3892                                        (char *)chap_tbl.name,
3893                                        strlen((char *)chap_tbl.name));
3894                        iscsi_set_param(cls_conn, ISCSI_PARAM_PASSWORD,
3895                                        (char *)chap_tbl.secret,
3896                                        chap_tbl.secret_len);
3897                }
3898        }
3899}
3900
3901void qla4xxx_update_session_conn_fwddb_param(struct scsi_qla_host *ha,
3902                                             struct ddb_entry *ddb_entry)
3903{
3904        struct iscsi_cls_session *cls_sess;
3905        struct iscsi_cls_conn *cls_conn;
3906        uint32_t ddb_state;
3907        dma_addr_t fw_ddb_entry_dma;
3908        struct dev_db_entry *fw_ddb_entry;
3909
3910        fw_ddb_entry = dma_alloc_coherent(&ha->pdev->dev, sizeof(*fw_ddb_entry),
3911                                          &fw_ddb_entry_dma, GFP_KERNEL);
3912        if (!fw_ddb_entry) {
3913                ql4_printk(KERN_ERR, ha,
3914                           "%s: Unable to allocate dma buffer\n", __func__);
3915                goto exit_session_conn_fwddb_param;
3916        }
3917
3918        if (qla4xxx_get_fwddb_entry(ha, ddb_entry->fw_ddb_index, fw_ddb_entry,
3919                                    fw_ddb_entry_dma, NULL, NULL, &ddb_state,
3920                                    NULL, NULL, NULL) == QLA_ERROR) {
3921                DEBUG2(ql4_printk(KERN_ERR, ha, "scsi%ld: %s: failed "
3922                                  "get_ddb_entry for fw_ddb_index %d\n",
3923                                  ha->host_no, __func__,
3924                                  ddb_entry->fw_ddb_index));
3925                goto exit_session_conn_fwddb_param;
3926        }
3927
3928        cls_sess = ddb_entry->sess;
3929
3930        cls_conn = ddb_entry->conn;
3931
3932        /* Update params */
3933        qla4xxx_copy_fwddb_param(ha, fw_ddb_entry, cls_sess, cls_conn);
3934
3935exit_session_conn_fwddb_param:
3936        if (fw_ddb_entry)
3937                dma_free_coherent(&ha->pdev->dev, sizeof(*fw_ddb_entry),
3938                                  fw_ddb_entry, fw_ddb_entry_dma);
3939}
3940
3941void qla4xxx_update_session_conn_param(struct scsi_qla_host *ha,
3942                                       struct ddb_entry *ddb_entry)
3943{
3944        struct iscsi_cls_session *cls_sess;
3945        struct iscsi_cls_conn *cls_conn;
3946        struct iscsi_session *sess;
3947        struct iscsi_conn *conn;
3948        uint32_t ddb_state;
3949        dma_addr_t fw_ddb_entry_dma;
3950        struct dev_db_entry *fw_ddb_entry;
3951
3952        fw_ddb_entry = dma_alloc_coherent(&ha->pdev->dev, sizeof(*fw_ddb_entry),
3953                                          &fw_ddb_entry_dma, GFP_KERNEL);
3954        if (!fw_ddb_entry) {
3955                ql4_printk(KERN_ERR, ha,
3956                           "%s: Unable to allocate dma buffer\n", __func__);
3957                goto exit_session_conn_param;
3958        }
3959
3960        if (qla4xxx_get_fwddb_entry(ha, ddb_entry->fw_ddb_index, fw_ddb_entry,
3961                                    fw_ddb_entry_dma, NULL, NULL, &ddb_state,
3962                                    NULL, NULL, NULL) == QLA_ERROR) {
3963                DEBUG2(ql4_printk(KERN_ERR, ha, "scsi%ld: %s: failed "
3964                                  "get_ddb_entry for fw_ddb_index %d\n",
3965                                  ha->host_no, __func__,
3966                                  ddb_entry->fw_ddb_index));
3967                goto exit_session_conn_param;
3968        }
3969
3970        cls_sess = ddb_entry->sess;
3971        sess = cls_sess->dd_data;
3972
3973        cls_conn = ddb_entry->conn;
3974        conn = cls_conn->dd_data;
3975
3976        /* Update timers after login */
3977        ddb_entry->default_relogin_timeout =
3978                (le16_to_cpu(fw_ddb_entry->def_timeout) > LOGIN_TOV) &&
3979                 (le16_to_cpu(fw_ddb_entry->def_timeout) < LOGIN_TOV * 10) ?
3980                 le16_to_cpu(fw_ddb_entry->def_timeout) : LOGIN_TOV;
3981        ddb_entry->default_time2wait =
3982                                le16_to_cpu(fw_ddb_entry->iscsi_def_time2wait);
3983
3984        /* Update params */
3985        ddb_entry->chap_tbl_idx = le16_to_cpu(fw_ddb_entry->chap_tbl_idx);
3986        qla4xxx_copy_to_sess_conn_params(conn, sess, fw_ddb_entry);
3987
3988        memcpy(sess->initiatorname, ha->name_string,
3989               min(sizeof(ha->name_string), sizeof(sess->initiatorname)));
3990
3991exit_session_conn_param:
3992        if (fw_ddb_entry)
3993                dma_free_coherent(&ha->pdev->dev, sizeof(*fw_ddb_entry),
3994                                  fw_ddb_entry, fw_ddb_entry_dma);
3995}
3996
3997/*
3998 * Timer routines
3999 */
4000static void qla4xxx_timer(struct timer_list *t);
4001
4002static void qla4xxx_start_timer(struct scsi_qla_host *ha,
4003                                unsigned long interval)
4004{
4005        DEBUG(printk("scsi: %s: Starting timer thread for adapter %d\n",
4006                     __func__, ha->host->host_no));
4007        timer_setup(&ha->timer, qla4xxx_timer, 0);
4008        ha->timer.expires = jiffies + interval * HZ;
4009        add_timer(&ha->timer);
4010        ha->timer_active = 1;
4011}
4012
4013static void qla4xxx_stop_timer(struct scsi_qla_host *ha)
4014{
4015        del_timer_sync(&ha->timer);
4016        ha->timer_active = 0;
4017}
4018
4019/***
4020 * qla4xxx_mark_device_missing - blocks the session
4021 * @cls_session: Pointer to the session to be blocked
4022 * @ddb_entry: Pointer to device database entry
4023 *
4024 * This routine marks a device missing and close connection.
4025 **/
4026void qla4xxx_mark_device_missing(struct iscsi_cls_session *cls_session)
4027{
4028        iscsi_block_session(cls_session);
4029}
4030
4031/**
4032 * qla4xxx_mark_all_devices_missing - mark all devices as missing.
4033 * @ha: Pointer to host adapter structure.
4034 *
4035 * This routine marks a device missing and resets the relogin retry count.
4036 **/
4037void qla4xxx_mark_all_devices_missing(struct scsi_qla_host *ha)
4038{
4039        iscsi_host_for_each_session(ha->host, qla4xxx_mark_device_missing);
4040}
4041
4042static struct srb* qla4xxx_get_new_srb(struct scsi_qla_host *ha,
4043                                       struct ddb_entry *ddb_entry,
4044                                       struct scsi_cmnd *cmd)
4045{
4046        struct srb *srb;
4047
4048        srb = mempool_alloc(ha->srb_mempool, GFP_ATOMIC);
4049        if (!srb)
4050                return srb;
4051
4052        kref_init(&srb->srb_ref);
4053        srb->ha = ha;
4054        srb->ddb = ddb_entry;
4055        srb->cmd = cmd;
4056        srb->flags = 0;
4057        CMD_SP(cmd) = (void *)srb;
4058
4059        return srb;
4060}
4061
4062static void qla4xxx_srb_free_dma(struct scsi_qla_host *ha, struct srb *srb)
4063{
4064        struct scsi_cmnd *cmd = srb->cmd;
4065
4066        if (srb->flags & SRB_DMA_VALID) {
4067                scsi_dma_unmap(cmd);
4068                srb->flags &= ~SRB_DMA_VALID;
4069        }
4070        CMD_SP(cmd) = NULL;
4071}
4072
4073void qla4xxx_srb_compl(struct kref *ref)
4074{
4075        struct srb *srb = container_of(ref, struct srb, srb_ref);
4076        struct scsi_cmnd *cmd = srb->cmd;
4077        struct scsi_qla_host *ha = srb->ha;
4078
4079        qla4xxx_srb_free_dma(ha, srb);
4080
4081        mempool_free(srb, ha->srb_mempool);
4082
4083        scsi_done(cmd);
4084}
4085
4086/**
4087 * qla4xxx_queuecommand - scsi layer issues scsi command to driver.
4088 * @host: scsi host
4089 * @cmd: Pointer to Linux's SCSI command structure
4090 *
4091 * Remarks:
4092 * This routine is invoked by Linux to send a SCSI command to the driver.
4093 * The mid-level driver tries to ensure that queuecommand never gets
4094 * invoked concurrently with itself or the interrupt handler (although
4095 * the interrupt handler may call this routine as part of request-
4096 * completion handling).   Unfortunely, it sometimes calls the scheduler
4097 * in interrupt context which is a big NO! NO!.
4098 **/
4099static int qla4xxx_queuecommand(struct Scsi_Host *host, struct scsi_cmnd *cmd)
4100{
4101        struct scsi_qla_host *ha = to_qla_host(host);
4102        struct ddb_entry *ddb_entry = cmd->device->hostdata;
4103        struct iscsi_cls_session *sess = ddb_entry->sess;
4104        struct srb *srb;
4105        int rval;
4106
4107        if (test_bit(AF_EEH_BUSY, &ha->flags)) {
4108                if (test_bit(AF_PCI_CHANNEL_IO_PERM_FAILURE, &ha->flags))
4109                        cmd->result = DID_NO_CONNECT << 16;
4110                else
4111                        cmd->result = DID_REQUEUE << 16;
4112                goto qc_fail_command;
4113        }
4114
4115        if (!sess) {
4116                cmd->result = DID_IMM_RETRY << 16;
4117                goto qc_fail_command;
4118        }
4119
4120        rval = iscsi_session_chkready(sess);
4121        if (rval) {
4122                cmd->result = rval;
4123                goto qc_fail_command;
4124        }
4125
4126        if (test_bit(DPC_RESET_HA_INTR, &ha->dpc_flags) ||
4127            test_bit(DPC_RESET_ACTIVE, &ha->dpc_flags) ||
4128            test_bit(DPC_RESET_HA, &ha->dpc_flags) ||
4129            test_bit(DPC_HA_UNRECOVERABLE, &ha->dpc_flags) ||
4130            test_bit(DPC_HA_NEED_QUIESCENT, &ha->dpc_flags) ||
4131            !test_bit(AF_ONLINE, &ha->flags) ||
4132            !test_bit(AF_LINK_UP, &ha->flags) ||
4133            test_bit(AF_LOOPBACK, &ha->flags) ||
4134            test_bit(DPC_POST_IDC_ACK, &ha->dpc_flags) ||
4135            test_bit(DPC_RESTORE_ACB, &ha->dpc_flags) ||
4136            test_bit(DPC_RESET_HA_FW_CONTEXT, &ha->dpc_flags))
4137                goto qc_host_busy;
4138
4139        srb = qla4xxx_get_new_srb(ha, ddb_entry, cmd);
4140        if (!srb)
4141                goto qc_host_busy;
4142
4143        rval = qla4xxx_send_command_to_isp(ha, srb);
4144        if (rval != QLA_SUCCESS)
4145                goto qc_host_busy_free_sp;
4146
4147        return 0;
4148
4149qc_host_busy_free_sp:
4150        qla4xxx_srb_free_dma(ha, srb);
4151        mempool_free(srb, ha->srb_mempool);
4152
4153qc_host_busy:
4154        return SCSI_MLQUEUE_HOST_BUSY;
4155
4156qc_fail_command:
4157        scsi_done(cmd);
4158
4159        return 0;
4160}
4161
4162/**
4163 * qla4xxx_mem_free - frees memory allocated to adapter
4164 * @ha: Pointer to host adapter structure.
4165 *
4166 * Frees memory previously allocated by qla4xxx_mem_alloc
4167 **/
4168static void qla4xxx_mem_free(struct scsi_qla_host *ha)
4169{
4170        if (ha->queues)
4171                dma_free_coherent(&ha->pdev->dev, ha->queues_len, ha->queues,
4172                                  ha->queues_dma);
4173
4174        vfree(ha->fw_dump);
4175
4176        ha->queues_len = 0;
4177        ha->queues = NULL;
4178        ha->queues_dma = 0;
4179        ha->request_ring = NULL;
4180        ha->request_dma = 0;
4181        ha->response_ring = NULL;
4182        ha->response_dma = 0;
4183        ha->shadow_regs = NULL;
4184        ha->shadow_regs_dma = 0;
4185        ha->fw_dump = NULL;
4186        ha->fw_dump_size = 0;
4187
4188        /* Free srb pool. */
4189        mempool_destroy(ha->srb_mempool);
4190        ha->srb_mempool = NULL;
4191
4192        dma_pool_destroy(ha->chap_dma_pool);
4193
4194        vfree(ha->chap_list);
4195        ha->chap_list = NULL;
4196
4197        dma_pool_destroy(ha->fw_ddb_dma_pool);
4198
4199        /* release io space registers  */
4200        if (is_qla8022(ha)) {
4201                if (ha->nx_pcibase)
4202                        iounmap(
4203                            (struct device_reg_82xx __iomem *)ha->nx_pcibase);
4204        } else if (is_qla8032(ha) || is_qla8042(ha)) {
4205                if (ha->nx_pcibase)
4206                        iounmap(
4207                            (struct device_reg_83xx __iomem *)ha->nx_pcibase);
4208        } else if (ha->reg) {
4209                iounmap(ha->reg);
4210        }
4211
4212        vfree(ha->reset_tmplt.buff);
4213
4214        pci_release_regions(ha->pdev);
4215}
4216
4217/**
4218 * qla4xxx_mem_alloc - allocates memory for use by adapter.
4219 * @ha: Pointer to host adapter structure
4220 *
4221 * Allocates DMA memory for request and response queues. Also allocates memory
4222 * for srbs.
4223 **/
4224static int qla4xxx_mem_alloc(struct scsi_qla_host *ha)
4225{
4226        unsigned long align;
4227
4228        /* Allocate contiguous block of DMA memory for queues. */
4229        ha->queues_len = ((REQUEST_QUEUE_DEPTH * QUEUE_SIZE) +
4230                          (RESPONSE_QUEUE_DEPTH * QUEUE_SIZE) +
4231                          sizeof(struct shadow_regs) +
4232                          MEM_ALIGN_VALUE +
4233                          (PAGE_SIZE - 1)) & ~(PAGE_SIZE - 1);
4234        ha->queues = dma_alloc_coherent(&ha->pdev->dev, ha->queues_len,
4235                                        &ha->queues_dma, GFP_KERNEL);
4236        if (ha->queues == NULL) {
4237                ql4_printk(KERN_WARNING, ha,
4238                    "Memory Allocation failed - queues.\n");
4239
4240                goto mem_alloc_error_exit;
4241        }
4242
4243        /*
4244         * As per RISC alignment requirements -- the bus-address must be a
4245         * multiple of the request-ring size (in bytes).
4246         */
4247        align = 0;
4248        if ((unsigned long)ha->queues_dma & (MEM_ALIGN_VALUE - 1))
4249                align = MEM_ALIGN_VALUE - ((unsigned long)ha->queues_dma &
4250                                           (MEM_ALIGN_VALUE - 1));
4251
4252        /* Update request and response queue pointers. */
4253        ha->request_dma = ha->queues_dma + align;
4254        ha->request_ring = (struct queue_entry *) (ha->queues + align);
4255        ha->response_dma = ha->queues_dma + align +
4256                (REQUEST_QUEUE_DEPTH * QUEUE_SIZE);
4257        ha->response_ring = (struct queue_entry *) (ha->queues + align +
4258                                                    (REQUEST_QUEUE_DEPTH *
4259                                                     QUEUE_SIZE));
4260        ha->shadow_regs_dma = ha->queues_dma + align +
4261                (REQUEST_QUEUE_DEPTH * QUEUE_SIZE) +
4262                (RESPONSE_QUEUE_DEPTH * QUEUE_SIZE);
4263        ha->shadow_regs = (struct shadow_regs *) (ha->queues + align +
4264                                                  (REQUEST_QUEUE_DEPTH *
4265                                                   QUEUE_SIZE) +
4266                                                  (RESPONSE_QUEUE_DEPTH *
4267                                                   QUEUE_SIZE));
4268
4269        /* Allocate memory for srb pool. */
4270        ha->srb_mempool = mempool_create(SRB_MIN_REQ, mempool_alloc_slab,
4271                                         mempool_free_slab, srb_cachep);
4272        if (ha->srb_mempool == NULL) {
4273                ql4_printk(KERN_WARNING, ha,
4274                    "Memory Allocation failed - SRB Pool.\n");
4275
4276                goto mem_alloc_error_exit;
4277        }
4278
4279        ha->chap_dma_pool = dma_pool_create("ql4_chap", &ha->pdev->dev,
4280                                            CHAP_DMA_BLOCK_SIZE, 8, 0);
4281
4282        if (ha->chap_dma_pool == NULL) {
4283                ql4_printk(KERN_WARNING, ha,
4284                    "%s: chap_dma_pool allocation failed..\n", __func__);
4285                goto mem_alloc_error_exit;
4286        }
4287
4288        ha->fw_ddb_dma_pool = dma_pool_create("ql4_fw_ddb", &ha->pdev->dev,
4289                                              DDB_DMA_BLOCK_SIZE, 8, 0);
4290
4291        if (ha->fw_ddb_dma_pool == NULL) {
4292                ql4_printk(KERN_WARNING, ha,
4293                           "%s: fw_ddb_dma_pool allocation failed..\n",
4294                           __func__);
4295                goto mem_alloc_error_exit;
4296        }
4297
4298        return QLA_SUCCESS;
4299
4300mem_alloc_error_exit:
4301        return QLA_ERROR;
4302}
4303
4304/**
4305 * qla4_8xxx_check_temp - Check the ISP82XX temperature.
4306 * @ha: adapter block pointer.
4307 *
4308 * Note: The caller should not hold the idc lock.
4309 **/
4310static int qla4_8xxx_check_temp(struct scsi_qla_host *ha)
4311{
4312        uint32_t temp, temp_state, temp_val;
4313        int status = QLA_SUCCESS;
4314
4315        temp = qla4_8xxx_rd_direct(ha, QLA8XXX_CRB_TEMP_STATE);
4316
4317        temp_state = qla82xx_get_temp_state(temp);
4318        temp_val = qla82xx_get_temp_val(temp);
4319
4320        if (temp_state == QLA82XX_TEMP_PANIC) {
4321                ql4_printk(KERN_WARNING, ha, "Device temperature %d degrees C"
4322                           " exceeds maximum allowed. Hardware has been shut"
4323                           " down.\n", temp_val);
4324                status = QLA_ERROR;
4325        } else if (temp_state == QLA82XX_TEMP_WARN) {
4326                if (ha->temperature == QLA82XX_TEMP_NORMAL)
4327                        ql4_printk(KERN_WARNING, ha, "Device temperature %d"
4328                                   " degrees C exceeds operating range."
4329                                   " Immediate action needed.\n", temp_val);
4330        } else {
4331                if (ha->temperature == QLA82XX_TEMP_WARN)
4332                        ql4_printk(KERN_INFO, ha, "Device temperature is"
4333                                   " now %d degrees C in normal range.\n",
4334                                   temp_val);
4335        }
4336        ha->temperature = temp_state;
4337        return status;
4338}
4339
4340/**
4341 * qla4_8xxx_check_fw_alive  - Check firmware health
4342 * @ha: Pointer to host adapter structure.
4343 *
4344 * Context: Interrupt
4345 **/
4346static int qla4_8xxx_check_fw_alive(struct scsi_qla_host *ha)
4347{
4348        uint32_t fw_heartbeat_counter;
4349        int status = QLA_SUCCESS;
4350
4351        fw_heartbeat_counter = qla4_8xxx_rd_direct(ha,
4352                                                   QLA8XXX_PEG_ALIVE_COUNTER);
4353        /* If PEG_ALIVE_COUNTER is 0xffffffff, AER/EEH is in progress, ignore */
4354        if (fw_heartbeat_counter == 0xffffffff) {
4355                DEBUG2(printk(KERN_WARNING "scsi%ld: %s: Device in frozen "
4356                    "state, QLA82XX_PEG_ALIVE_COUNTER is 0xffffffff\n",
4357                    ha->host_no, __func__));
4358                return status;
4359        }
4360
4361        if (ha->fw_heartbeat_counter == fw_heartbeat_counter) {
4362                ha->seconds_since_last_heartbeat++;
4363                /* FW not alive after 2 seconds */
4364                if (ha->seconds_since_last_heartbeat == 2) {
4365                        ha->seconds_since_last_heartbeat = 0;
4366                        qla4_8xxx_dump_peg_reg(ha);
4367                        status = QLA_ERROR;
4368                }
4369        } else
4370                ha->seconds_since_last_heartbeat = 0;
4371
4372        ha->fw_heartbeat_counter = fw_heartbeat_counter;
4373        return status;
4374}
4375
4376static void qla4_8xxx_process_fw_error(struct scsi_qla_host *ha)
4377{
4378        uint32_t halt_status;
4379        int halt_status_unrecoverable = 0;
4380
4381        halt_status = qla4_8xxx_rd_direct(ha, QLA8XXX_PEG_HALT_STATUS1);
4382
4383        if (is_qla8022(ha)) {
4384                ql4_printk(KERN_INFO, ha, "%s: disabling pause transmit on port 0 & 1.\n",
4385                           __func__);
4386                qla4_82xx_wr_32(ha, QLA82XX_CRB_NIU + 0x98,
4387                                CRB_NIU_XG_PAUSE_CTL_P0 |
4388                                CRB_NIU_XG_PAUSE_CTL_P1);
4389
4390                if (QLA82XX_FWERROR_CODE(halt_status) == 0x67)
4391                        ql4_printk(KERN_ERR, ha, "%s: Firmware aborted with error code 0x00006700. Device is being reset\n",
4392                                   __func__);
4393                if (halt_status & HALT_STATUS_UNRECOVERABLE)
4394                        halt_status_unrecoverable = 1;
4395        } else if (is_qla8032(ha) || is_qla8042(ha)) {
4396                if (halt_status & QLA83XX_HALT_STATUS_FW_RESET)
4397                        ql4_printk(KERN_ERR, ha, "%s: Firmware error detected device is being reset\n",
4398                                   __func__);
4399                else if (halt_status & QLA83XX_HALT_STATUS_UNRECOVERABLE)
4400                        halt_status_unrecoverable = 1;
4401        }
4402
4403        /*
4404         * Since we cannot change dev_state in interrupt context,
4405         * set appropriate DPC flag then wakeup DPC
4406         */
4407        if (halt_status_unrecoverable) {
4408                set_bit(DPC_HA_UNRECOVERABLE, &ha->dpc_flags);
4409        } else {
4410                ql4_printk(KERN_INFO, ha, "%s: detect abort needed!\n",
4411                           __func__);
4412                set_bit(DPC_RESET_HA, &ha->dpc_flags);
4413        }
4414        qla4xxx_mailbox_premature_completion(ha);
4415        qla4xxx_wake_dpc(ha);
4416}
4417
4418/**
4419 * qla4_8xxx_watchdog - Poll dev state
4420 * @ha: Pointer to host adapter structure.
4421 *
4422 * Context: Interrupt
4423 **/
4424void qla4_8xxx_watchdog(struct scsi_qla_host *ha)
4425{
4426        uint32_t dev_state;
4427        uint32_t idc_ctrl;
4428
4429        if (is_qla8032(ha) &&
4430            (qla4_83xx_is_detached(ha) == QLA_SUCCESS))
4431                WARN_ONCE(1, "%s: iSCSI function %d marked invisible\n",
4432                          __func__, ha->func_num);
4433
4434        /* don't poll if reset is going on */
4435        if (!(test_bit(DPC_RESET_ACTIVE, &ha->dpc_flags) ||
4436            test_bit(DPC_RESET_HA, &ha->dpc_flags) ||
4437            test_bit(DPC_RETRY_RESET_HA, &ha->dpc_flags))) {
4438                dev_state = qla4_8xxx_rd_direct(ha, QLA8XXX_CRB_DEV_STATE);
4439
4440                if (qla4_8xxx_check_temp(ha)) {
4441                        if (is_qla8022(ha)) {
4442                                ql4_printk(KERN_INFO, ha, "disabling pause transmit on port 0 & 1.\n");
4443                                qla4_82xx_wr_32(ha, QLA82XX_CRB_NIU + 0x98,
4444                                                CRB_NIU_XG_PAUSE_CTL_P0 |
4445                                                CRB_NIU_XG_PAUSE_CTL_P1);
4446                        }
4447                        set_bit(DPC_HA_UNRECOVERABLE, &ha->dpc_flags);
4448                        qla4xxx_wake_dpc(ha);
4449                } else if (dev_state == QLA8XXX_DEV_NEED_RESET &&
4450                           !test_bit(DPC_RESET_HA, &ha->dpc_flags)) {
4451
4452                        ql4_printk(KERN_INFO, ha, "%s: HW State: NEED RESET!\n",
4453                                   __func__);
4454
4455                        if (is_qla8032(ha) || is_qla8042(ha)) {
4456                                idc_ctrl = qla4_83xx_rd_reg(ha,
4457                                                        QLA83XX_IDC_DRV_CTRL);
4458                                if (!(idc_ctrl & GRACEFUL_RESET_BIT1)) {
4459                                        ql4_printk(KERN_INFO, ha, "%s: Graceful reset bit is not set\n",
4460                                                   __func__);
4461                                        qla4xxx_mailbox_premature_completion(
4462                                                                            ha);
4463                                }
4464                        }
4465
4466                        if ((is_qla8032(ha) || is_qla8042(ha)) ||
4467                            (is_qla8022(ha) && !ql4xdontresethba)) {
4468                                set_bit(DPC_RESET_HA, &ha->dpc_flags);
4469                                qla4xxx_wake_dpc(ha);
4470                        }
4471                } else if (dev_state == QLA8XXX_DEV_NEED_QUIESCENT &&
4472                    !test_bit(DPC_HA_NEED_QUIESCENT, &ha->dpc_flags)) {
4473                        ql4_printk(KERN_INFO, ha, "%s: HW State: NEED QUIES!\n",
4474                            __func__);
4475                        set_bit(DPC_HA_NEED_QUIESCENT, &ha->dpc_flags);
4476                        qla4xxx_wake_dpc(ha);
4477                } else  {
4478                        /* Check firmware health */
4479                        if (qla4_8xxx_check_fw_alive(ha))
4480                                qla4_8xxx_process_fw_error(ha);
4481                }
4482        }
4483}
4484
4485static void qla4xxx_check_relogin_flash_ddb(struct iscsi_cls_session *cls_sess)
4486{
4487        struct iscsi_session *sess;
4488        struct ddb_entry *ddb_entry;
4489        struct scsi_qla_host *ha;
4490
4491        sess = cls_sess->dd_data;
4492        ddb_entry = sess->dd_data;
4493        ha = ddb_entry->ha;
4494
4495        if (!(ddb_entry->ddb_type == FLASH_DDB))
4496                return;
4497
4498        if (adapter_up(ha) && !test_bit(DF_RELOGIN, &ddb_entry->flags) &&
4499            !iscsi_is_session_online(cls_sess)) {
4500                if (atomic_read(&ddb_entry->retry_relogin_timer) !=
4501                    INVALID_ENTRY) {
4502                        if (atomic_read(&ddb_entry->retry_relogin_timer) ==
4503                                        0) {
4504                                atomic_set(&ddb_entry->retry_relogin_timer,
4505                                           INVALID_ENTRY);
4506                                set_bit(DPC_RELOGIN_DEVICE, &ha->dpc_flags);
4507                                set_bit(DF_RELOGIN, &ddb_entry->flags);
4508                                DEBUG2(ql4_printk(KERN_INFO, ha,
4509                                       "%s: index [%d] login device\n",
4510                                        __func__, ddb_entry->fw_ddb_index));
4511                        } else
4512                                atomic_dec(&ddb_entry->retry_relogin_timer);
4513                }
4514        }
4515
4516        /* Wait for relogin to timeout */
4517        if (atomic_read(&ddb_entry->relogin_timer) &&
4518            (atomic_dec_and_test(&ddb_entry->relogin_timer) != 0)) {
4519                /*
4520                 * If the relogin times out and the device is
4521                 * still NOT ONLINE then try and relogin again.
4522                 */
4523                if (!iscsi_is_session_online(cls_sess)) {
4524                        /* Reset retry relogin timer */
4525                        atomic_inc(&ddb_entry->relogin_retry_count);
4526                        DEBUG2(ql4_printk(KERN_INFO, ha,
4527                                "%s: index[%d] relogin timed out-retrying"
4528                                " relogin (%d), retry (%d)\n", __func__,
4529                                ddb_entry->fw_ddb_index,
4530                                atomic_read(&ddb_entry->relogin_retry_count),
4531                                ddb_entry->default_time2wait + 4));
4532                        set_bit(DPC_RELOGIN_DEVICE, &ha->dpc_flags);
4533                        atomic_set(&ddb_entry->retry_relogin_timer,
4534                                   ddb_entry->default_time2wait + 4);
4535                }
4536        }
4537}
4538
4539/**
4540 * qla4xxx_timer - checks every second for work to do.
4541 * @t: Context to obtain pointer to host adapter structure.
4542 **/
4543static void qla4xxx_timer(struct timer_list *t)
4544{
4545        struct scsi_qla_host *ha = from_timer(ha, t, timer);
4546        int start_dpc = 0;
4547        uint16_t w;
4548
4549        iscsi_host_for_each_session(ha->host, qla4xxx_check_relogin_flash_ddb);
4550
4551        /* If we are in the middle of AER/EEH processing
4552         * skip any processing and reschedule the timer
4553         */
4554        if (test_bit(AF_EEH_BUSY, &ha->flags)) {
4555                mod_timer(&ha->timer, jiffies + HZ);
4556                return;
4557        }
4558
4559        /* Hardware read to trigger an EEH error during mailbox waits. */
4560        if (!pci_channel_offline(ha->pdev))
4561                pci_read_config_word(ha->pdev, PCI_VENDOR_ID, &w);
4562
4563        if (is_qla80XX(ha))
4564                qla4_8xxx_watchdog(ha);
4565
4566        if (is_qla40XX(ha)) {
4567                /* Check for heartbeat interval. */
4568                if (ha->firmware_options & FWOPT_HEARTBEAT_ENABLE &&
4569                    ha->heartbeat_interval != 0) {
4570                        ha->seconds_since_last_heartbeat++;
4571                        if (ha->seconds_since_last_heartbeat >
4572                            ha->heartbeat_interval + 2)
4573                                set_bit(DPC_RESET_HA, &ha->dpc_flags);
4574                }
4575        }
4576
4577        /* Process any deferred work. */
4578        if (!list_empty(&ha->work_list))
4579                start_dpc++;
4580
4581        /* Wakeup the dpc routine for this adapter, if needed. */
4582        if (start_dpc ||
4583             test_bit(DPC_RESET_HA, &ha->dpc_flags) ||
4584             test_bit(DPC_RETRY_RESET_HA, &ha->dpc_flags) ||
4585             test_bit(DPC_RELOGIN_DEVICE, &ha->dpc_flags) ||
4586             test_bit(DPC_RESET_HA_FW_CONTEXT, &ha->dpc_flags) ||
4587             test_bit(DPC_RESET_HA_INTR, &ha->dpc_flags) ||
4588             test_bit(DPC_GET_DHCP_IP_ADDR, &ha->dpc_flags) ||
4589             test_bit(DPC_LINK_CHANGED, &ha->dpc_flags) ||
4590             test_bit(DPC_HA_UNRECOVERABLE, &ha->dpc_flags) ||
4591             test_bit(DPC_HA_NEED_QUIESCENT, &ha->dpc_flags) ||
4592             test_bit(DPC_SYSFS_DDB_EXPORT, &ha->dpc_flags) ||
4593             test_bit(DPC_AEN, &ha->dpc_flags)) {
4594                DEBUG2(printk("scsi%ld: %s: scheduling dpc routine"
4595                              " - dpc flags = 0x%lx\n",
4596                              ha->host_no, __func__, ha->dpc_flags));
4597                qla4xxx_wake_dpc(ha);
4598        }
4599
4600        /* Reschedule timer thread to call us back in one second */
4601        mod_timer(&ha->timer, jiffies + HZ);
4602
4603        DEBUG2(ha->seconds_since_last_intr++);
4604}
4605
4606/**
4607 * qla4xxx_cmd_wait - waits for all outstanding commands to complete
4608 * @ha: Pointer to host adapter structure.
4609 *
4610 * This routine stalls the driver until all outstanding commands are returned.
4611 * Caller must release the Hardware Lock prior to calling this routine.
4612 **/
4613static int qla4xxx_cmd_wait(struct scsi_qla_host *ha)
4614{
4615        uint32_t index = 0;
4616        unsigned long flags;
4617        struct scsi_cmnd *cmd;
4618        unsigned long wtime;
4619        uint32_t wtmo;
4620
4621        if (is_qla40XX(ha))
4622                wtmo = WAIT_CMD_TOV;
4623        else
4624                wtmo = ha->nx_reset_timeout / 2;
4625
4626        wtime = jiffies + (wtmo * HZ);
4627
4628        DEBUG2(ql4_printk(KERN_INFO, ha,
4629                          "Wait up to %u seconds for cmds to complete\n",
4630                          wtmo));
4631
4632        while (!time_after_eq(jiffies, wtime)) {
4633                spin_lock_irqsave(&ha->hardware_lock, flags);
4634                /* Find a command that hasn't completed. */
4635                for (index = 0; index < ha->host->can_queue; index++) {
4636                        cmd = scsi_host_find_tag(ha->host, index);
4637                        /*
4638                         * We cannot just check if the index is valid,
4639                         * becase if we are run from the scsi eh, then
4640                         * the scsi/block layer is going to prevent
4641                         * the tag from being released.
4642                         */
4643                        if (cmd != NULL && CMD_SP(cmd))
4644                                break;
4645                }
4646                spin_unlock_irqrestore(&ha->hardware_lock, flags);
4647
4648                /* If No Commands are pending, wait is complete */
4649                if (index == ha->host->can_queue)
4650                        return QLA_SUCCESS;
4651
4652                msleep(1000);
4653        }
4654        /* If we timed out on waiting for commands to come back
4655         * return ERROR. */
4656        return QLA_ERROR;
4657}
4658
4659int qla4xxx_hw_reset(struct scsi_qla_host *ha)
4660{
4661        uint32_t ctrl_status;
4662        unsigned long flags = 0;
4663
4664        DEBUG2(printk(KERN_ERR "scsi%ld: %s\n", ha->host_no, __func__));
4665
4666        if (ql4xxx_lock_drvr_wait(ha) != QLA_SUCCESS)
4667                return QLA_ERROR;
4668
4669        spin_lock_irqsave(&ha->hardware_lock, flags);
4670
4671        /*
4672         * If the SCSI Reset Interrupt bit is set, clear it.
4673         * Otherwise, the Soft Reset won't work.
4674         */
4675        ctrl_status = readw(&ha->reg->ctrl_status);
4676        if ((ctrl_status & CSR_SCSI_RESET_INTR) != 0)
4677                writel(set_rmask(CSR_SCSI_RESET_INTR), &ha->reg->ctrl_status);
4678
4679        /* Issue Soft Reset */
4680        writel(set_rmask(CSR_SOFT_RESET), &ha->reg->ctrl_status);
4681        readl(&ha->reg->ctrl_status);
4682
4683        spin_unlock_irqrestore(&ha->hardware_lock, flags);
4684        return QLA_SUCCESS;
4685}
4686
4687/**
4688 * qla4xxx_soft_reset - performs soft reset.
4689 * @ha: Pointer to host adapter structure.
4690 **/
4691int qla4xxx_soft_reset(struct scsi_qla_host *ha)
4692{
4693        uint32_t max_wait_time;
4694        unsigned long flags = 0;
4695        int status;
4696        uint32_t ctrl_status;
4697
4698        status = qla4xxx_hw_reset(ha);
4699        if (status != QLA_SUCCESS)
4700                return status;
4701
4702        status = QLA_ERROR;
4703        /* Wait until the Network Reset Intr bit is cleared */
4704        max_wait_time = RESET_INTR_TOV;
4705        do {
4706                spin_lock_irqsave(&ha->hardware_lock, flags);
4707                ctrl_status = readw(&ha->reg->ctrl_status);
4708                spin_unlock_irqrestore(&ha->hardware_lock, flags);
4709
4710                if ((ctrl_status & CSR_NET_RESET_INTR) == 0)
4711                        break;
4712
4713                msleep(1000);
4714        } while ((--max_wait_time));
4715
4716        if ((ctrl_status & CSR_NET_RESET_INTR) != 0) {
4717                DEBUG2(printk(KERN_WARNING
4718                              "scsi%ld: Network Reset Intr not cleared by "
4719                              "Network function, clearing it now!\n",
4720                              ha->host_no));
4721                spin_lock_irqsave(&ha->hardware_lock, flags);
4722                writel(set_rmask(CSR_NET_RESET_INTR), &ha->reg->ctrl_status);
4723                readl(&ha->reg->ctrl_status);
4724                spin_unlock_irqrestore(&ha->hardware_lock, flags);
4725        }
4726
4727        /* Wait until the firmware tells us the Soft Reset is done */
4728        max_wait_time = SOFT_RESET_TOV;
4729        do {
4730                spin_lock_irqsave(&ha->hardware_lock, flags);
4731                ctrl_status = readw(&ha->reg->ctrl_status);
4732                spin_unlock_irqrestore(&ha->hardware_lock, flags);
4733
4734                if ((ctrl_status & CSR_SOFT_RESET) == 0) {
4735                        status = QLA_SUCCESS;
4736                        break;
4737                }
4738
4739                msleep(1000);
4740        } while ((--max_wait_time));
4741
4742        /*
4743         * Also, make sure that the SCSI Reset Interrupt bit has been cleared
4744         * after the soft reset has taken place.
4745         */
4746        spin_lock_irqsave(&ha->hardware_lock, flags);
4747        ctrl_status = readw(&ha->reg->ctrl_status);
4748        if ((ctrl_status & CSR_SCSI_RESET_INTR) != 0) {
4749                writel(set_rmask(CSR_SCSI_RESET_INTR), &ha->reg->ctrl_status);
4750                readl(&ha->reg->ctrl_status);
4751        }
4752        spin_unlock_irqrestore(&ha->hardware_lock, flags);
4753
4754        /* If soft reset fails then most probably the bios on other
4755         * function is also enabled.
4756         * Since the initialization is sequential the other fn
4757         * wont be able to acknowledge the soft reset.
4758         * Issue a force soft reset to workaround this scenario.
4759         */
4760        if (max_wait_time == 0) {
4761                /* Issue Force Soft Reset */
4762                spin_lock_irqsave(&ha->hardware_lock, flags);
4763                writel(set_rmask(CSR_FORCE_SOFT_RESET), &ha->reg->ctrl_status);
4764                readl(&ha->reg->ctrl_status);
4765                spin_unlock_irqrestore(&ha->hardware_lock, flags);
4766                /* Wait until the firmware tells us the Soft Reset is done */
4767                max_wait_time = SOFT_RESET_TOV;
4768                do {
4769                        spin_lock_irqsave(&ha->hardware_lock, flags);
4770                        ctrl_status = readw(&ha->reg->ctrl_status);
4771                        spin_unlock_irqrestore(&ha->hardware_lock, flags);
4772
4773                        if ((ctrl_status & CSR_FORCE_SOFT_RESET) == 0) {
4774                                status = QLA_SUCCESS;
4775                                break;
4776                        }
4777
4778                        msleep(1000);
4779                } while ((--max_wait_time));
4780        }
4781
4782        return status;
4783}
4784
4785/**
4786 * qla4xxx_abort_active_cmds - returns all outstanding i/o requests to O.S.
4787 * @ha: Pointer to host adapter structure.
4788 * @res: returned scsi status
4789 *
4790 * This routine is called just prior to a HARD RESET to return all
4791 * outstanding commands back to the Operating System.
4792 * Caller should make sure that the following locks are released
4793 * before this calling routine: Hardware lock, and io_request_lock.
4794 **/
4795static void qla4xxx_abort_active_cmds(struct scsi_qla_host *ha, int res)
4796{
4797        struct srb *srb;
4798        int i;
4799        unsigned long flags;
4800
4801        spin_lock_irqsave(&ha->hardware_lock, flags);
4802        for (i = 0; i < ha->host->can_queue; i++) {
4803                srb = qla4xxx_del_from_active_array(ha, i);
4804                if (srb != NULL) {
4805                        srb->cmd->result = res;
4806                        kref_put(&srb->srb_ref, qla4xxx_srb_compl);
4807                }
4808        }
4809        spin_unlock_irqrestore(&ha->hardware_lock, flags);
4810}
4811
4812void qla4xxx_dead_adapter_cleanup(struct scsi_qla_host *ha)
4813{
4814        clear_bit(AF_ONLINE, &ha->flags);
4815
4816        /* Disable the board */
4817        ql4_printk(KERN_INFO, ha, "Disabling the board\n");
4818
4819        qla4xxx_abort_active_cmds(ha, DID_NO_CONNECT << 16);
4820        qla4xxx_mark_all_devices_missing(ha);
4821        clear_bit(AF_INIT_DONE, &ha->flags);
4822}
4823
4824static void qla4xxx_fail_session(struct iscsi_cls_session *cls_session)
4825{
4826        struct iscsi_session *sess;
4827        struct ddb_entry *ddb_entry;
4828
4829        sess = cls_session->dd_data;
4830        ddb_entry = sess->dd_data;
4831        ddb_entry->fw_ddb_device_state = DDB_DS_SESSION_FAILED;
4832
4833        if (ddb_entry->ddb_type == FLASH_DDB)
4834                iscsi_block_session(ddb_entry->sess);
4835        else
4836                iscsi_session_failure(cls_session->dd_data,
4837                                      ISCSI_ERR_CONN_FAILED);
4838}
4839
4840/**
4841 * qla4xxx_recover_adapter - recovers adapter after a fatal error
4842 * @ha: Pointer to host adapter structure.
4843 **/
4844static int qla4xxx_recover_adapter(struct scsi_qla_host *ha)
4845{
4846        int status = QLA_ERROR;
4847        uint8_t reset_chip = 0;
4848        uint32_t dev_state;
4849        unsigned long wait;
4850
4851        /* Stall incoming I/O until we are done */
4852        scsi_block_requests(ha->host);
4853        clear_bit(AF_ONLINE, &ha->flags);
4854        clear_bit(AF_LINK_UP, &ha->flags);
4855
4856        DEBUG2(ql4_printk(KERN_INFO, ha, "%s: adapter OFFLINE\n", __func__));
4857
4858        set_bit(DPC_RESET_ACTIVE, &ha->dpc_flags);
4859
4860        if ((is_qla8032(ha) || is_qla8042(ha)) &&
4861            !test_bit(DPC_RESET_HA_FW_CONTEXT, &ha->dpc_flags)) {
4862                ql4_printk(KERN_INFO, ha, "%s: disabling pause transmit on port 0 & 1.\n",
4863                           __func__);
4864                /* disable pause frame for ISP83xx */
4865                qla4_83xx_disable_pause(ha);
4866        }
4867
4868        iscsi_host_for_each_session(ha->host, qla4xxx_fail_session);
4869
4870        if (test_bit(DPC_RESET_HA, &ha->dpc_flags))
4871                reset_chip = 1;
4872
4873        /* For the DPC_RESET_HA_INTR case (ISP-4xxx specific)
4874         * do not reset adapter, jump to initialize_adapter */
4875        if (test_bit(DPC_RESET_HA_INTR, &ha->dpc_flags)) {
4876                status = QLA_SUCCESS;
4877                goto recover_ha_init_adapter;
4878        }
4879
4880        /* For the ISP-8xxx adapter, issue a stop_firmware if invoked
4881         * from eh_host_reset or ioctl module */
4882        if (is_qla80XX(ha) && !reset_chip &&
4883            test_bit(DPC_RESET_HA_FW_CONTEXT, &ha->dpc_flags)) {
4884
4885                DEBUG2(ql4_printk(KERN_INFO, ha,
4886                    "scsi%ld: %s - Performing stop_firmware...\n",
4887                    ha->host_no, __func__));
4888                status = ha->isp_ops->reset_firmware(ha);
4889                if (status == QLA_SUCCESS) {
4890                        ha->isp_ops->disable_intrs(ha);
4891                        qla4xxx_process_aen(ha, FLUSH_DDB_CHANGED_AENS);
4892                        qla4xxx_abort_active_cmds(ha, DID_RESET << 16);
4893                } else {
4894                        /* If the stop_firmware fails then
4895                         * reset the entire chip */
4896                        reset_chip = 1;
4897                        clear_bit(DPC_RESET_HA_FW_CONTEXT, &ha->dpc_flags);
4898                        set_bit(DPC_RESET_HA, &ha->dpc_flags);
4899                }
4900        }
4901
4902        /* Issue full chip reset if recovering from a catastrophic error,
4903         * or if stop_firmware fails for ISP-8xxx.
4904         * This is the default case for ISP-4xxx */
4905        if (is_qla40XX(ha) || reset_chip) {
4906                if (is_qla40XX(ha))
4907                        goto chip_reset;
4908
4909                /* Check if 8XXX firmware is alive or not
4910                 * We may have arrived here from NEED_RESET
4911                 * detection only */
4912                if (test_bit(AF_FW_RECOVERY, &ha->flags))
4913                        goto chip_reset;
4914
4915                wait = jiffies + (FW_ALIVE_WAIT_TOV * HZ);
4916                while (time_before(jiffies, wait)) {
4917                        if (qla4_8xxx_check_fw_alive(ha)) {
4918                                qla4xxx_mailbox_premature_completion(ha);
4919                                break;
4920                        }
4921
4922                        set_current_state(TASK_UNINTERRUPTIBLE);
4923                        schedule_timeout(HZ);
4924                }
4925chip_reset:
4926                if (!test_bit(AF_FW_RECOVERY, &ha->flags))
4927                        qla4xxx_cmd_wait(ha);
4928
4929                qla4xxx_process_aen(ha, FLUSH_DDB_CHANGED_AENS);
4930                DEBUG2(ql4_printk(KERN_INFO, ha,
4931                    "scsi%ld: %s - Performing chip reset..\n",
4932                    ha->host_no, __func__));
4933                status = ha->isp_ops->reset_chip(ha);
4934                qla4xxx_abort_active_cmds(ha, DID_RESET << 16);
4935        }
4936
4937        /* Flush any pending ddb changed AENs */
4938        qla4xxx_process_aen(ha, FLUSH_DDB_CHANGED_AENS);
4939
4940recover_ha_init_adapter:
4941        /* Upon successful firmware/chip reset, re-initialize the adapter */
4942        if (status == QLA_SUCCESS) {
4943                /* For ISP-4xxx, force function 1 to always initialize
4944                 * before function 3 to prevent both funcions from
4945                 * stepping on top of the other */
4946                if (is_qla40XX(ha) && (ha->mac_index == 3))
4947                        ssleep(6);
4948
4949                /* NOTE: AF_ONLINE flag set upon successful completion of
4950                 * qla4xxx_initialize_adapter */
4951                status = qla4xxx_initialize_adapter(ha, RESET_ADAPTER);
4952                if (is_qla80XX(ha) && (status == QLA_ERROR)) {
4953                        status = qla4_8xxx_check_init_adapter_retry(ha);
4954                        if (status == QLA_ERROR) {
4955                                ql4_printk(KERN_INFO, ha, "scsi%ld: %s: Don't retry recover adapter\n",
4956                                           ha->host_no, __func__);
4957                                qla4xxx_dead_adapter_cleanup(ha);
4958                                clear_bit(DPC_RETRY_RESET_HA, &ha->dpc_flags);
4959                                clear_bit(DPC_RESET_HA, &ha->dpc_flags);
4960                                clear_bit(DPC_RESET_HA_FW_CONTEXT,
4961                                          &ha->dpc_flags);
4962                                goto exit_recover;
4963                        }
4964                }
4965        }
4966
4967        /* Retry failed adapter initialization, if necessary
4968         * Do not retry initialize_adapter for RESET_HA_INTR (ISP-4xxx specific)
4969         * case to prevent ping-pong resets between functions */
4970        if (!test_bit(AF_ONLINE, &ha->flags) &&
4971            !test_bit(DPC_RESET_HA_INTR, &ha->dpc_flags)) {
4972                /* Adapter initialization failed, see if we can retry
4973                 * resetting the ha.
4974                 * Since we don't want to block the DPC for too long
4975                 * with multiple resets in the same thread,
4976                 * utilize DPC to retry */
4977                if (is_qla80XX(ha)) {
4978                        ha->isp_ops->idc_lock(ha);
4979                        dev_state = qla4_8xxx_rd_direct(ha,
4980                                                        QLA8XXX_CRB_DEV_STATE);
4981                        ha->isp_ops->idc_unlock(ha);
4982                        if (dev_state == QLA8XXX_DEV_FAILED) {
4983                                ql4_printk(KERN_INFO, ha, "%s: don't retry "
4984                                           "recover adapter. H/W is in Failed "
4985                                           "state\n", __func__);
4986                                qla4xxx_dead_adapter_cleanup(ha);
4987                                clear_bit(DPC_RETRY_RESET_HA, &ha->dpc_flags);
4988                                clear_bit(DPC_RESET_HA, &ha->dpc_flags);
4989                                clear_bit(DPC_RESET_HA_FW_CONTEXT,
4990                                                &ha->dpc_flags);
4991                                status = QLA_ERROR;
4992
4993                                goto exit_recover;
4994                        }
4995                }
4996
4997                if (!test_bit(DPC_RETRY_RESET_HA, &ha->dpc_flags)) {
4998                        ha->retry_reset_ha_cnt = MAX_RESET_HA_RETRIES;
4999                        DEBUG2(printk("scsi%ld: recover adapter - retrying "
5000                                      "(%d) more times\n", ha->host_no,
5001                                      ha->retry_reset_ha_cnt));
5002                        set_bit(DPC_RETRY_RESET_HA, &ha->dpc_flags);
5003                        status = QLA_ERROR;
5004                } else {
5005                        if (ha->retry_reset_ha_cnt > 0) {
5006                                /* Schedule another Reset HA--DPC will retry */
5007                                ha->retry_reset_ha_cnt--;
5008                                DEBUG2(printk("scsi%ld: recover adapter - "
5009                                              "retry remaining %d\n",
5010                                              ha->host_no,
5011                                              ha->retry_reset_ha_cnt));
5012                                status = QLA_ERROR;
5013                        }
5014
5015                        if (ha->retry_reset_ha_cnt == 0) {
5016                                /* Recover adapter retries have been exhausted.
5017                                 * Adapter DEAD */
5018                                DEBUG2(printk("scsi%ld: recover adapter "
5019                                              "failed - board disabled\n",
5020                                              ha->host_no));
5021                                qla4xxx_dead_adapter_cleanup(ha);
5022                                clear_bit(DPC_RETRY_RESET_HA, &ha->dpc_flags);
5023                                clear_bit(DPC_RESET_HA, &ha->dpc_flags);
5024                                clear_bit(DPC_RESET_HA_FW_CONTEXT,
5025                                          &ha->dpc_flags);
5026                                status = QLA_ERROR;
5027                        }
5028                }
5029        } else {
5030                clear_bit(DPC_RESET_HA, &ha->dpc_flags);
5031                clear_bit(DPC_RESET_HA_FW_CONTEXT, &ha->dpc_flags);
5032                clear_bit(DPC_RETRY_RESET_HA, &ha->dpc_flags);
5033        }
5034
5035exit_recover:
5036        ha->adapter_error_count++;
5037
5038        if (test_bit(AF_ONLINE, &ha->flags))
5039                ha->isp_ops->enable_intrs(ha);
5040
5041        scsi_unblock_requests(ha->host);
5042
5043        clear_bit(DPC_RESET_ACTIVE, &ha->dpc_flags);
5044        DEBUG2(printk("scsi%ld: recover adapter: %s\n", ha->host_no,
5045            status == QLA_ERROR ? "FAILED" : "SUCCEEDED"));
5046
5047        return status;
5048}
5049
5050static void qla4xxx_relogin_devices(struct iscsi_cls_session *cls_session)
5051{
5052        struct iscsi_session *sess;
5053        struct ddb_entry *ddb_entry;
5054        struct scsi_qla_host *ha;
5055
5056        sess = cls_session->dd_data;
5057        ddb_entry = sess->dd_data;
5058        ha = ddb_entry->ha;
5059        if (!iscsi_is_session_online(cls_session)) {
5060                if (ddb_entry->fw_ddb_device_state == DDB_DS_SESSION_ACTIVE) {
5061                        ql4_printk(KERN_INFO, ha, "scsi%ld: %s: ddb[%d]"
5062                                   " unblock session\n", ha->host_no, __func__,
5063                                   ddb_entry->fw_ddb_index);
5064                        iscsi_unblock_session(ddb_entry->sess);
5065                } else {
5066                        /* Trigger relogin */
5067                        if (ddb_entry->ddb_type == FLASH_DDB) {
5068                                if (!(test_bit(DF_RELOGIN, &ddb_entry->flags) ||
5069                                      test_bit(DF_DISABLE_RELOGIN,
5070                                               &ddb_entry->flags)))
5071                                        qla4xxx_arm_relogin_timer(ddb_entry);
5072                        } else
5073                                iscsi_session_failure(cls_session->dd_data,
5074                                                      ISCSI_ERR_CONN_FAILED);
5075                }
5076        }
5077}
5078
5079int qla4xxx_unblock_flash_ddb(struct iscsi_cls_session *cls_session)
5080{
5081        struct iscsi_session *sess;
5082        struct ddb_entry *ddb_entry;
5083        struct scsi_qla_host *ha;
5084
5085        sess = cls_session->dd_data;
5086        ddb_entry = sess->dd_data;
5087        ha = ddb_entry->ha;
5088        ql4_printk(KERN_INFO, ha, "scsi%ld: %s: ddb[%d]"
5089                   " unblock session\n", ha->host_no, __func__,
5090                   ddb_entry->fw_ddb_index);
5091
5092        iscsi_unblock_session(ddb_entry->sess);
5093
5094        /* Start scan target */
5095        if (test_bit(AF_ONLINE, &ha->flags)) {
5096                ql4_printk(KERN_INFO, ha, "scsi%ld: %s: ddb[%d]"
5097                           " start scan\n", ha->host_no, __func__,
5098                           ddb_entry->fw_ddb_index);
5099                scsi_queue_work(ha->host, &ddb_entry->sess->scan_work);
5100        }
5101        return QLA_SUCCESS;
5102}
5103
5104int qla4xxx_unblock_ddb(struct iscsi_cls_session *cls_session)
5105{
5106        struct iscsi_session *sess;
5107        struct ddb_entry *ddb_entry;
5108        struct scsi_qla_host *ha;
5109        int status = QLA_SUCCESS;
5110
5111        sess = cls_session->dd_data;
5112        ddb_entry = sess->dd_data;
5113        ha = ddb_entry->ha;
5114        ql4_printk(KERN_INFO, ha, "scsi%ld: %s: ddb[%d]"
5115                   " unblock user space session\n", ha->host_no, __func__,
5116                   ddb_entry->fw_ddb_index);
5117
5118        if (!iscsi_is_session_online(cls_session)) {
5119                iscsi_conn_start(ddb_entry->conn);
5120                iscsi_conn_login_event(ddb_entry->conn,
5121                                       ISCSI_CONN_STATE_LOGGED_IN);
5122        } else {
5123                ql4_printk(KERN_INFO, ha,
5124                           "scsi%ld: %s: ddb[%d] session [%d] already logged in\n",
5125                           ha->host_no, __func__, ddb_entry->fw_ddb_index,
5126                           cls_session->sid);
5127                status = QLA_ERROR;
5128        }
5129
5130        return status;
5131}
5132
5133static void qla4xxx_relogin_all_devices(struct scsi_qla_host *ha)
5134{
5135        iscsi_host_for_each_session(ha->host, qla4xxx_relogin_devices);
5136}
5137
5138static void qla4xxx_relogin_flash_ddb(struct iscsi_cls_session *cls_sess)
5139{
5140        uint16_t relogin_timer;
5141        struct iscsi_session *sess;
5142        struct ddb_entry *ddb_entry;
5143        struct scsi_qla_host *ha;
5144
5145        sess = cls_sess->dd_data;
5146        ddb_entry = sess->dd_data;
5147        ha = ddb_entry->ha;
5148
5149        relogin_timer = max(ddb_entry->default_relogin_timeout,
5150                            (uint16_t)RELOGIN_TOV);
5151        atomic_set(&ddb_entry->relogin_timer, relogin_timer);
5152
5153        DEBUG2(ql4_printk(KERN_INFO, ha,
5154                          "scsi%ld: Relogin index [%d]. TOV=%d\n", ha->host_no,
5155                          ddb_entry->fw_ddb_index, relogin_timer));
5156
5157        qla4xxx_login_flash_ddb(cls_sess);
5158}
5159
5160static void qla4xxx_dpc_relogin(struct iscsi_cls_session *cls_sess)
5161{
5162        struct iscsi_session *sess;
5163        struct ddb_entry *ddb_entry;
5164        struct scsi_qla_host *ha;
5165
5166        sess = cls_sess->dd_data;
5167        ddb_entry = sess->dd_data;
5168        ha = ddb_entry->ha;
5169
5170        if (!(ddb_entry->ddb_type == FLASH_DDB))
5171                return;
5172
5173        if (test_bit(DF_DISABLE_RELOGIN, &ddb_entry->flags))
5174                return;
5175
5176        if (test_and_clear_bit(DF_RELOGIN, &ddb_entry->flags) &&
5177            !iscsi_is_session_online(cls_sess)) {
5178                DEBUG2(ql4_printk(KERN_INFO, ha,
5179                                  "relogin issued\n"));
5180                qla4xxx_relogin_flash_ddb(cls_sess);
5181        }
5182}
5183
5184void qla4xxx_wake_dpc(struct scsi_qla_host *ha)
5185{
5186        if (ha->dpc_thread)
5187                queue_work(ha->dpc_thread, &ha->dpc_work);
5188}
5189
5190static struct qla4_work_evt *
5191qla4xxx_alloc_work(struct scsi_qla_host *ha, uint32_t data_size,
5192                   enum qla4_work_type type)
5193{
5194        struct qla4_work_evt *e;
5195        uint32_t size = sizeof(struct qla4_work_evt) + data_size;
5196
5197        e = kzalloc(size, GFP_ATOMIC);
5198        if (!e)
5199                return NULL;
5200
5201        INIT_LIST_HEAD(&e->list);
5202        e->type = type;
5203        return e;
5204}
5205
5206static void qla4xxx_post_work(struct scsi_qla_host *ha,
5207                             struct qla4_work_evt *e)
5208{
5209        unsigned long flags;
5210
5211        spin_lock_irqsave(&ha->work_lock, flags);
5212        list_add_tail(&e->list, &ha->work_list);
5213        spin_unlock_irqrestore(&ha->work_lock, flags);
5214        qla4xxx_wake_dpc(ha);
5215}
5216
5217int qla4xxx_post_aen_work(struct scsi_qla_host *ha,
5218                          enum iscsi_host_event_code aen_code,
5219                          uint32_t data_size, uint8_t *data)
5220{
5221        struct qla4_work_evt *e;
5222
5223        e = qla4xxx_alloc_work(ha, data_size, QLA4_EVENT_AEN);
5224        if (!e)
5225                return QLA_ERROR;
5226
5227        e->u.aen.code = aen_code;
5228        e->u.aen.data_size = data_size;
5229        memcpy(e->u.aen.data, data, data_size);
5230
5231        qla4xxx_post_work(ha, e);
5232
5233        return QLA_SUCCESS;
5234}
5235
5236int qla4xxx_post_ping_evt_work(struct scsi_qla_host *ha,
5237                               uint32_t status, uint32_t pid,
5238                               uint32_t data_size, uint8_t *data)
5239{
5240        struct qla4_work_evt *e;
5241
5242        e = qla4xxx_alloc_work(ha, data_size, QLA4_EVENT_PING_STATUS);
5243        if (!e)
5244                return QLA_ERROR;
5245
5246        e->u.ping.status = status;
5247        e->u.ping.pid = pid;
5248        e->u.ping.data_size = data_size;
5249        memcpy(e->u.ping.data, data, data_size);
5250
5251        qla4xxx_post_work(ha, e);
5252
5253        return QLA_SUCCESS;
5254}
5255
5256static void qla4xxx_do_work(struct scsi_qla_host *ha)
5257{
5258        struct qla4_work_evt *e, *tmp;
5259        unsigned long flags;
5260        LIST_HEAD(work);
5261
5262        spin_lock_irqsave(&ha->work_lock, flags);
5263        list_splice_init(&ha->work_list, &work);
5264        spin_unlock_irqrestore(&ha->work_lock, flags);
5265
5266        list_for_each_entry_safe(e, tmp, &work, list) {
5267                list_del_init(&e->list);
5268
5269                switch (e->type) {
5270                case QLA4_EVENT_AEN:
5271                        iscsi_post_host_event(ha->host_no,
5272                                              &qla4xxx_iscsi_transport,
5273                                              e->u.aen.code,
5274                                              e->u.aen.data_size,
5275                                              e->u.aen.data);
5276                        break;
5277                case QLA4_EVENT_PING_STATUS:
5278                        iscsi_ping_comp_event(ha->host_no,
5279                                              &qla4xxx_iscsi_transport,
5280                                              e->u.ping.status,
5281                                              e->u.ping.pid,
5282                                              e->u.ping.data_size,
5283                                              e->u.ping.data);
5284                        break;
5285                default:
5286                        ql4_printk(KERN_WARNING, ha, "event type: 0x%x not "
5287                                   "supported", e->type);
5288                }
5289                kfree(e);
5290        }
5291}
5292
5293/**
5294 * qla4xxx_do_dpc - dpc routine
5295 * @work: Context to obtain pointer to host adapter structure.
5296 *
5297 * This routine is a task that is schedule by the interrupt handler
5298 * to perform the background processing for interrupts.  We put it
5299 * on a task queue that is consumed whenever the scheduler runs; that's
5300 * so you can do anything (i.e. put the process to sleep etc).  In fact,
5301 * the mid-level tries to sleep when it reaches the driver threshold
5302 * "host->can_queue". This can cause a panic if we were in our interrupt code.
5303 **/
5304static void qla4xxx_do_dpc(struct work_struct *work)
5305{
5306        struct scsi_qla_host *ha =
5307                container_of(work, struct scsi_qla_host, dpc_work);
5308        int status = QLA_ERROR;
5309
5310        DEBUG2(ql4_printk(KERN_INFO, ha,
5311                          "scsi%ld: %s: DPC handler waking up. flags = 0x%08lx, dpc_flags = 0x%08lx\n",
5312                          ha->host_no, __func__, ha->flags, ha->dpc_flags));
5313
5314        /* Initialization not yet finished. Don't do anything yet. */
5315        if (!test_bit(AF_INIT_DONE, &ha->flags))
5316                return;
5317
5318        if (test_bit(AF_EEH_BUSY, &ha->flags)) {
5319                DEBUG2(printk(KERN_INFO "scsi%ld: %s: flags = %lx\n",
5320                    ha->host_no, __func__, ha->flags));
5321                return;
5322        }
5323
5324        /* post events to application */
5325        qla4xxx_do_work(ha);
5326
5327        if (is_qla80XX(ha)) {
5328                if (test_bit(DPC_HA_UNRECOVERABLE, &ha->dpc_flags)) {
5329                        if (is_qla8032(ha) || is_qla8042(ha)) {
5330                                ql4_printk(KERN_INFO, ha, "%s: disabling pause transmit on port 0 & 1.\n",
5331                                           __func__);
5332                                /* disable pause frame for ISP83xx */
5333                                qla4_83xx_disable_pause(ha);
5334                        }
5335
5336                        ha->isp_ops->idc_lock(ha);
5337                        qla4_8xxx_wr_direct(ha, QLA8XXX_CRB_DEV_STATE,
5338                                            QLA8XXX_DEV_FAILED);
5339                        ha->isp_ops->idc_unlock(ha);
5340                        ql4_printk(KERN_INFO, ha, "HW State: FAILED\n");
5341                        qla4_8xxx_device_state_handler(ha);
5342                }
5343
5344                if (test_bit(DPC_POST_IDC_ACK, &ha->dpc_flags)) {
5345                        if (is_qla8042(ha)) {
5346                                if (ha->idc_info.info2 &
5347                                    ENABLE_INTERNAL_LOOPBACK) {
5348                                        ql4_printk(KERN_INFO, ha, "%s: Disabling ACB\n",
5349                                                   __func__);
5350                                        status = qla4_84xx_config_acb(ha,
5351                                                            ACB_CONFIG_DISABLE);
5352                                        if (status != QLA_SUCCESS) {
5353                                                ql4_printk(KERN_INFO, ha, "%s: ACB config failed\n",
5354                                                           __func__);
5355                                        }
5356                                }
5357                        }
5358                        qla4_83xx_post_idc_ack(ha);
5359                        clear_bit(DPC_POST_IDC_ACK, &ha->dpc_flags);
5360                }
5361
5362                if (is_qla8042(ha) &&
5363                    test_bit(DPC_RESTORE_ACB, &ha->dpc_flags)) {
5364                        ql4_printk(KERN_INFO, ha, "%s: Restoring ACB\n",
5365                                   __func__);
5366                        if (qla4_84xx_config_acb(ha, ACB_CONFIG_SET) !=
5367                            QLA_SUCCESS) {
5368                                ql4_printk(KERN_INFO, ha, "%s: ACB config failed ",
5369                                           __func__);
5370                        }
5371                        clear_bit(DPC_RESTORE_ACB, &ha->dpc_flags);
5372                }
5373
5374                if (test_and_clear_bit(DPC_HA_NEED_QUIESCENT, &ha->dpc_flags)) {
5375                        qla4_8xxx_need_qsnt_handler(ha);
5376                }
5377        }
5378
5379        if (!test_bit(DPC_RESET_ACTIVE, &ha->dpc_flags) &&
5380            (test_bit(DPC_RESET_HA, &ha->dpc_flags) ||
5381            test_bit(DPC_RESET_HA_INTR, &ha->dpc_flags) ||
5382            test_bit(DPC_RESET_HA_FW_CONTEXT, &ha->dpc_flags))) {
5383                if ((is_qla8022(ha) && ql4xdontresethba) ||
5384                    ((is_qla8032(ha) || is_qla8042(ha)) &&
5385                     qla4_83xx_idc_dontreset(ha))) {
5386                        DEBUG2(printk("scsi%ld: %s: Don't Reset HBA\n",
5387                            ha->host_no, __func__));
5388                        clear_bit(DPC_RESET_HA, &ha->dpc_flags);
5389                        clear_bit(DPC_RESET_HA_INTR, &ha->dpc_flags);
5390                        clear_bit(DPC_RESET_HA_FW_CONTEXT, &ha->dpc_flags);
5391                        goto dpc_post_reset_ha;
5392                }
5393                if (test_bit(DPC_RESET_HA_FW_CONTEXT, &ha->dpc_flags) ||
5394                    test_bit(DPC_RESET_HA, &ha->dpc_flags))
5395                        qla4xxx_recover_adapter(ha);
5396
5397                if (test_bit(DPC_RESET_HA_INTR, &ha->dpc_flags)) {
5398                        uint8_t wait_time = RESET_INTR_TOV;
5399
5400                        while ((readw(&ha->reg->ctrl_status) &
5401                                (CSR_SOFT_RESET | CSR_FORCE_SOFT_RESET)) != 0) {
5402                                if (--wait_time == 0)
5403                                        break;
5404                                msleep(1000);
5405                        }
5406                        if (wait_time == 0)
5407                                DEBUG2(printk("scsi%ld: %s: SR|FSR "
5408                                              "bit not cleared-- resetting\n",
5409                                              ha->host_no, __func__));
5410                        qla4xxx_abort_active_cmds(ha, DID_RESET << 16);
5411                        if (ql4xxx_lock_drvr_wait(ha) == QLA_SUCCESS) {
5412                                qla4xxx_process_aen(ha, FLUSH_DDB_CHANGED_AENS);
5413                                status = qla4xxx_recover_adapter(ha);
5414                        }
5415                        clear_bit(DPC_RESET_HA_INTR, &ha->dpc_flags);
5416                        if (status == QLA_SUCCESS)
5417                                ha->isp_ops->enable_intrs(ha);
5418                }
5419        }
5420
5421dpc_post_reset_ha:
5422        /* ---- process AEN? --- */
5423        if (test_and_clear_bit(DPC_AEN, &ha->dpc_flags))
5424                qla4xxx_process_aen(ha, PROCESS_ALL_AENS);
5425
5426        /* ---- Get DHCP IP Address? --- */
5427        if (test_and_clear_bit(DPC_GET_DHCP_IP_ADDR, &ha->dpc_flags))
5428                qla4xxx_get_dhcp_ip_address(ha);
5429
5430        /* ---- relogin device? --- */
5431        if (adapter_up(ha) &&
5432            test_and_clear_bit(DPC_RELOGIN_DEVICE, &ha->dpc_flags)) {
5433                iscsi_host_for_each_session(ha->host, qla4xxx_dpc_relogin);
5434        }
5435
5436        /* ---- link change? --- */
5437        if (!test_bit(AF_LOOPBACK, &ha->flags) &&
5438            test_and_clear_bit(DPC_LINK_CHANGED, &ha->dpc_flags)) {
5439                if (!test_bit(AF_LINK_UP, &ha->flags)) {
5440                        /* ---- link down? --- */
5441                        qla4xxx_mark_all_devices_missing(ha);
5442                } else {
5443                        /* ---- link up? --- *
5444                         * F/W will auto login to all devices ONLY ONCE after
5445                         * link up during driver initialization and runtime
5446                         * fatal error recovery.  Therefore, the driver must
5447                         * manually relogin to devices when recovering from
5448                         * connection failures, logouts, expired KATO, etc. */
5449                        if (test_and_clear_bit(AF_BUILD_DDB_LIST, &ha->flags)) {
5450                                qla4xxx_build_ddb_list(ha, ha->is_reset);
5451                                iscsi_host_for_each_session(ha->host,
5452                                                qla4xxx_login_flash_ddb);
5453                        } else
5454                                qla4xxx_relogin_all_devices(ha);
5455                }
5456        }
5457        if (test_and_clear_bit(DPC_SYSFS_DDB_EXPORT, &ha->dpc_flags)) {
5458                if (qla4xxx_sysfs_ddb_export(ha))
5459                        ql4_printk(KERN_ERR, ha, "%s: Error exporting ddb to sysfs\n",
5460                                   __func__);
5461        }
5462}
5463
5464/**
5465 * qla4xxx_free_adapter - release the adapter
5466 * @ha: pointer to adapter structure
5467 **/
5468static void qla4xxx_free_adapter(struct scsi_qla_host *ha)
5469{
5470        qla4xxx_abort_active_cmds(ha, DID_NO_CONNECT << 16);
5471
5472        /* Turn-off interrupts on the card. */
5473        ha->isp_ops->disable_intrs(ha);
5474
5475        if (is_qla40XX(ha)) {
5476                writel(set_rmask(CSR_SCSI_PROCESSOR_INTR),
5477                       &ha->reg->ctrl_status);
5478                readl(&ha->reg->ctrl_status);
5479        } else if (is_qla8022(ha)) {
5480                writel(0, &ha->qla4_82xx_reg->host_int);
5481                readl(&ha->qla4_82xx_reg->host_int);
5482        } else if (is_qla8032(ha) || is_qla8042(ha)) {
5483                writel(0, &ha->qla4_83xx_reg->risc_intr);
5484                readl(&ha->qla4_83xx_reg->risc_intr);
5485        }
5486
5487        /* Remove timer thread, if present */
5488        if (ha->timer_active)
5489                qla4xxx_stop_timer(ha);
5490
5491        /* Kill the kernel thread for this host */
5492        if (ha->dpc_thread)
5493                destroy_workqueue(ha->dpc_thread);
5494
5495        /* Kill the kernel thread for this host */
5496        if (ha->task_wq)
5497                destroy_workqueue(ha->task_wq);
5498
5499        /* Put firmware in known state */
5500        ha->isp_ops->reset_firmware(ha);
5501
5502        if (is_qla80XX(ha)) {
5503                ha->isp_ops->idc_lock(ha);
5504                qla4_8xxx_clear_drv_active(ha);
5505                ha->isp_ops->idc_unlock(ha);
5506        }
5507
5508        /* Detach interrupts */
5509        qla4xxx_free_irqs(ha);
5510
5511        /* free extra memory */
5512        qla4xxx_mem_free(ha);
5513}
5514
5515int qla4_8xxx_iospace_config(struct scsi_qla_host *ha)
5516{
5517        int status = 0;
5518        unsigned long mem_base, mem_len;
5519        struct pci_dev *pdev = ha->pdev;
5520
5521        status = pci_request_regions(pdev, DRIVER_NAME);
5522        if (status) {
5523                printk(KERN_WARNING
5524                    "scsi(%ld) Failed to reserve PIO regions (%s) "
5525                    "status=%d\n", ha->host_no, pci_name(pdev), status);
5526                goto iospace_error_exit;
5527        }
5528
5529        DEBUG2(printk(KERN_INFO "%s: revision-id=%d\n",
5530            __func__, pdev->revision));
5531        ha->revision_id = pdev->revision;
5532
5533        /* remap phys address */
5534        mem_base = pci_resource_start(pdev, 0); /* 0 is for BAR 0 */
5535        mem_len = pci_resource_len(pdev, 0);
5536        DEBUG2(printk(KERN_INFO "%s: ioremap from %lx a size of %lx\n",
5537            __func__, mem_base, mem_len));
5538
5539        /* mapping of pcibase pointer */
5540        ha->nx_pcibase = (unsigned long)ioremap(mem_base, mem_len);
5541        if (!ha->nx_pcibase) {
5542                printk(KERN_ERR
5543                    "cannot remap MMIO (%s), aborting\n", pci_name(pdev));
5544                pci_release_regions(ha->pdev);
5545                goto iospace_error_exit;
5546        }
5547
5548        /* Mapping of IO base pointer, door bell read and write pointer */
5549
5550        /* mapping of IO base pointer */
5551        if (is_qla8022(ha)) {
5552                ha->qla4_82xx_reg = (struct device_reg_82xx  __iomem *)
5553                                    ((uint8_t *)ha->nx_pcibase + 0xbc000 +
5554                                     (ha->pdev->devfn << 11));
5555                ha->nx_db_wr_ptr = (ha->pdev->devfn == 4 ? QLA82XX_CAM_RAM_DB1 :
5556                                    QLA82XX_CAM_RAM_DB2);
5557        } else if (is_qla8032(ha) || is_qla8042(ha)) {
5558                ha->qla4_83xx_reg = (struct device_reg_83xx __iomem *)
5559                                    ((uint8_t *)ha->nx_pcibase);
5560        }
5561
5562        return 0;
5563iospace_error_exit:
5564        return -ENOMEM;
5565}
5566
5567/***
5568 * qla4xxx_iospace_config - maps registers
5569 * @ha: pointer to adapter structure
5570 *
5571 * This routines maps HBA's registers from the pci address space
5572 * into the kernel virtual address space for memory mapped i/o.
5573 **/
5574int qla4xxx_iospace_config(struct scsi_qla_host *ha)
5575{
5576        unsigned long pio, pio_len, pio_flags;
5577        unsigned long mmio, mmio_len, mmio_flags;
5578
5579        pio = pci_resource_start(ha->pdev, 0);
5580        pio_len = pci_resource_len(ha->pdev, 0);
5581        pio_flags = pci_resource_flags(ha->pdev, 0);
5582        if (pio_flags & IORESOURCE_IO) {
5583                if (pio_len < MIN_IOBASE_LEN) {
5584                        ql4_printk(KERN_WARNING, ha,
5585                                "Invalid PCI I/O region size\n");
5586                        pio = 0;
5587                }
5588        } else {
5589                ql4_printk(KERN_WARNING, ha, "region #0 not a PIO resource\n");
5590                pio = 0;
5591        }
5592
5593        /* Use MMIO operations for all accesses. */
5594        mmio = pci_resource_start(ha->pdev, 1);
5595        mmio_len = pci_resource_len(ha->pdev, 1);
5596        mmio_flags = pci_resource_flags(ha->pdev, 1);
5597
5598        if (!(mmio_flags & IORESOURCE_MEM)) {
5599                ql4_printk(KERN_ERR, ha,
5600                    "region #0 not an MMIO resource, aborting\n");
5601
5602                goto iospace_error_exit;
5603        }
5604
5605        if (mmio_len < MIN_IOBASE_LEN) {
5606                ql4_printk(KERN_ERR, ha,
5607                    "Invalid PCI mem region size, aborting\n");
5608                goto iospace_error_exit;
5609        }
5610
5611        if (pci_request_regions(ha->pdev, DRIVER_NAME)) {
5612                ql4_printk(KERN_WARNING, ha,
5613                    "Failed to reserve PIO/MMIO regions\n");
5614
5615                goto iospace_error_exit;
5616        }
5617
5618        ha->pio_address = pio;
5619        ha->pio_length = pio_len;
5620        ha->reg = ioremap(mmio, MIN_IOBASE_LEN);
5621        if (!ha->reg) {
5622                ql4_printk(KERN_ERR, ha,
5623                    "cannot remap MMIO, aborting\n");
5624
5625                goto iospace_error_exit;
5626        }
5627
5628        return 0;
5629
5630iospace_error_exit:
5631        return -ENOMEM;
5632}
5633
5634static struct isp_operations qla4xxx_isp_ops = {
5635        .iospace_config         = qla4xxx_iospace_config,
5636        .pci_config             = qla4xxx_pci_config,
5637        .disable_intrs          = qla4xxx_disable_intrs,
5638        .enable_intrs           = qla4xxx_enable_intrs,
5639        .start_firmware         = qla4xxx_start_firmware,
5640        .intr_handler           = qla4xxx_intr_handler,
5641        .interrupt_service_routine = qla4xxx_interrupt_service_routine,
5642        .reset_chip             = qla4xxx_soft_reset,
5643        .reset_firmware         = qla4xxx_hw_reset,
5644        .queue_iocb             = qla4xxx_queue_iocb,
5645        .complete_iocb          = qla4xxx_complete_iocb,
5646        .rd_shdw_req_q_out      = qla4xxx_rd_shdw_req_q_out,
5647        .rd_shdw_rsp_q_in       = qla4xxx_rd_shdw_rsp_q_in,
5648        .get_sys_info           = qla4xxx_get_sys_info,
5649        .queue_mailbox_command  = qla4xxx_queue_mbox_cmd,
5650        .process_mailbox_interrupt = qla4xxx_process_mbox_intr,
5651};
5652
5653static struct isp_operations qla4_82xx_isp_ops = {
5654        .iospace_config         = qla4_8xxx_iospace_config,
5655        .pci_config             = qla4_8xxx_pci_config,
5656        .disable_intrs          = qla4_82xx_disable_intrs,
5657        .enable_intrs           = qla4_82xx_enable_intrs,
5658        .start_firmware         = qla4_8xxx_load_risc,
5659        .restart_firmware       = qla4_82xx_try_start_fw,
5660        .intr_handler           = qla4_82xx_intr_handler,
5661        .interrupt_service_routine = qla4_82xx_interrupt_service_routine,
5662        .need_reset             = qla4_8xxx_need_reset,
5663        .reset_chip             = qla4_82xx_isp_reset,
5664        .reset_firmware         = qla4_8xxx_stop_firmware,
5665        .queue_iocb             = qla4_82xx_queue_iocb,
5666        .complete_iocb          = qla4_82xx_complete_iocb,
5667        .rd_shdw_req_q_out      = qla4_82xx_rd_shdw_req_q_out,
5668        .rd_shdw_rsp_q_in       = qla4_82xx_rd_shdw_rsp_q_in,
5669        .get_sys_info           = qla4_8xxx_get_sys_info,
5670        .rd_reg_direct          = qla4_82xx_rd_32,
5671        .wr_reg_direct          = qla4_82xx_wr_32,
5672        .rd_reg_indirect        = qla4_82xx_md_rd_32,
5673        .wr_reg_indirect        = qla4_82xx_md_wr_32,
5674        .idc_lock               = qla4_82xx_idc_lock,
5675        .idc_unlock             = qla4_82xx_idc_unlock,
5676        .rom_lock_recovery      = qla4_82xx_rom_lock_recovery,
5677        .queue_mailbox_command  = qla4_82xx_queue_mbox_cmd,
5678        .process_mailbox_interrupt = qla4_82xx_process_mbox_intr,
5679};
5680
5681static struct isp_operations qla4_83xx_isp_ops = {
5682        .iospace_config         = qla4_8xxx_iospace_config,
5683        .pci_config             = qla4_8xxx_pci_config,
5684        .disable_intrs          = qla4_83xx_disable_intrs,
5685        .enable_intrs           = qla4_83xx_enable_intrs,
5686        .start_firmware         = qla4_8xxx_load_risc,
5687        .restart_firmware       = qla4_83xx_start_firmware,
5688        .intr_handler           = qla4_83xx_intr_handler,
5689        .interrupt_service_routine = qla4_83xx_interrupt_service_routine,
5690        .need_reset             = qla4_8xxx_need_reset,
5691        .reset_chip             = qla4_83xx_isp_reset,
5692        .reset_firmware         = qla4_8xxx_stop_firmware,
5693        .queue_iocb             = qla4_83xx_queue_iocb,
5694        .complete_iocb          = qla4_83xx_complete_iocb,
5695        .rd_shdw_req_q_out      = qla4xxx_rd_shdw_req_q_out,
5696        .rd_shdw_rsp_q_in       = qla4xxx_rd_shdw_rsp_q_in,
5697        .get_sys_info           = qla4_8xxx_get_sys_info,
5698        .rd_reg_direct          = qla4_83xx_rd_reg,
5699        .wr_reg_direct          = qla4_83xx_wr_reg,
5700        .rd_reg_indirect        = qla4_83xx_rd_reg_indirect,
5701        .wr_reg_indirect        = qla4_83xx_wr_reg_indirect,
5702        .idc_lock               = qla4_83xx_drv_lock,
5703        .idc_unlock             = qla4_83xx_drv_unlock,
5704        .rom_lock_recovery      = qla4_83xx_rom_lock_recovery,
5705        .queue_mailbox_command  = qla4_83xx_queue_mbox_cmd,
5706        .process_mailbox_interrupt = qla4_83xx_process_mbox_intr,
5707};
5708
5709uint16_t qla4xxx_rd_shdw_req_q_out(struct scsi_qla_host *ha)
5710{
5711        return (uint16_t)le32_to_cpu(ha->shadow_regs->req_q_out);
5712}
5713
5714uint16_t qla4_82xx_rd_shdw_req_q_out(struct scsi_qla_host *ha)
5715{
5716        return (uint16_t)le32_to_cpu(readl(&ha->qla4_82xx_reg->req_q_out));
5717}
5718
5719uint16_t qla4xxx_rd_shdw_rsp_q_in(struct scsi_qla_host *ha)
5720{
5721        return (uint16_t)le32_to_cpu(ha->shadow_regs->rsp_q_in);
5722}
5723
5724uint16_t qla4_82xx_rd_shdw_rsp_q_in(struct scsi_qla_host *ha)
5725{
5726        return (uint16_t)le32_to_cpu(readl(&ha->qla4_82xx_reg->rsp_q_in));
5727}
5728
5729static ssize_t qla4xxx_show_boot_eth_info(void *data, int type, char *buf)
5730{
5731        struct scsi_qla_host *ha = data;
5732        char *str = buf;
5733        int rc;
5734
5735        switch (type) {
5736        case ISCSI_BOOT_ETH_FLAGS:
5737                rc = sprintf(str, "%d\n", SYSFS_FLAG_FW_SEL_BOOT);
5738                break;
5739        case ISCSI_BOOT_ETH_INDEX:
5740                rc = sprintf(str, "0\n");
5741                break;
5742        case ISCSI_BOOT_ETH_MAC:
5743                rc = sysfs_format_mac(str, ha->my_mac,
5744                                      MAC_ADDR_LEN);
5745                break;
5746        default:
5747                rc = -ENOSYS;
5748                break;
5749        }
5750        return rc;
5751}
5752
5753static umode_t qla4xxx_eth_get_attr_visibility(void *data, int type)
5754{
5755        int rc;
5756
5757        switch (type) {
5758        case ISCSI_BOOT_ETH_FLAGS:
5759        case ISCSI_BOOT_ETH_MAC:
5760        case ISCSI_BOOT_ETH_INDEX:
5761                rc = S_IRUGO;
5762                break;
5763        default:
5764                rc = 0;
5765                break;
5766        }
5767        return rc;
5768}
5769
5770static ssize_t qla4xxx_show_boot_ini_info(void *data, int type, char *buf)
5771{
5772        struct scsi_qla_host *ha = data;
5773        char *str = buf;
5774        int rc;
5775
5776        switch (type) {
5777        case ISCSI_BOOT_INI_INITIATOR_NAME:
5778                rc = sprintf(str, "%s\n", ha->name_string);
5779                break;
5780        default:
5781                rc = -ENOSYS;
5782                break;
5783        }
5784        return rc;
5785}
5786
5787static umode_t qla4xxx_ini_get_attr_visibility(void *data, int type)
5788{
5789        int rc;
5790
5791        switch (type) {
5792        case ISCSI_BOOT_INI_INITIATOR_NAME:
5793                rc = S_IRUGO;
5794                break;
5795        default:
5796                rc = 0;
5797                break;
5798        }
5799        return rc;
5800}
5801
5802static ssize_t
5803qla4xxx_show_boot_tgt_info(struct ql4_boot_session_info *boot_sess, int type,
5804                           char *buf)
5805{
5806        struct ql4_conn_info *boot_conn = &boot_sess->conn_list[0];
5807        char *str = buf;
5808        int rc;
5809
5810        switch (type) {
5811        case ISCSI_BOOT_TGT_NAME:
5812                rc = sprintf(buf, "%s\n", (char *)&boot_sess->target_name);
5813                break;
5814        case ISCSI_BOOT_TGT_IP_ADDR:
5815                if (boot_sess->conn_list[0].dest_ipaddr.ip_type == 0x1)
5816                        rc = sprintf(buf, "%pI4\n",
5817                                     &boot_conn->dest_ipaddr.ip_address);
5818                else
5819                        rc = sprintf(str, "%pI6\n",
5820                                     &boot_conn->dest_ipaddr.ip_address);
5821                break;
5822        case ISCSI_BOOT_TGT_PORT:
5823                        rc = sprintf(str, "%d\n", boot_conn->dest_port);
5824                break;
5825        case ISCSI_BOOT_TGT_CHAP_NAME:
5826                rc = sprintf(str,  "%.*s\n",
5827                             boot_conn->chap.target_chap_name_length,
5828                             (char *)&boot_conn->chap.target_chap_name);
5829                break;
5830        case ISCSI_BOOT_TGT_CHAP_SECRET:
5831                rc = sprintf(str,  "%.*s\n",
5832                             boot_conn->chap.target_secret_length,
5833                             (char *)&boot_conn->chap.target_secret);
5834                break;
5835        case ISCSI_BOOT_TGT_REV_CHAP_NAME:
5836                rc = sprintf(str,  "%.*s\n",
5837                             boot_conn->chap.intr_chap_name_length,
5838                             (char *)&boot_conn->chap.intr_chap_name);
5839                break;
5840        case ISCSI_BOOT_TGT_REV_CHAP_SECRET:
5841                rc = sprintf(str,  "%.*s\n",
5842                             boot_conn->chap.intr_secret_length,
5843                             (char *)&boot_conn->chap.intr_secret);
5844                break;
5845        case ISCSI_BOOT_TGT_FLAGS:
5846                rc = sprintf(str, "%d\n", SYSFS_FLAG_FW_SEL_BOOT);
5847                break;
5848        case ISCSI_BOOT_TGT_NIC_ASSOC:
5849                rc = sprintf(str, "0\n");
5850                break;
5851        default:
5852                rc = -ENOSYS;
5853                break;
5854        }
5855        return rc;
5856}
5857
5858static ssize_t qla4xxx_show_boot_tgt_pri_info(void *data, int type, char *buf)
5859{
5860        struct scsi_qla_host *ha = data;
5861        struct ql4_boot_session_info *boot_sess = &(ha->boot_tgt.boot_pri_sess);
5862
5863        return qla4xxx_show_boot_tgt_info(boot_sess, type, buf);
5864}
5865
5866static ssize_t qla4xxx_show_boot_tgt_sec_info(void *data, int type, char *buf)
5867{
5868        struct scsi_qla_host *ha = data;
5869        struct ql4_boot_session_info *boot_sess = &(ha->boot_tgt.boot_sec_sess);
5870
5871        return qla4xxx_show_boot_tgt_info(boot_sess, type, buf);
5872}
5873
5874static umode_t qla4xxx_tgt_get_attr_visibility(void *data, int type)
5875{
5876        int rc;
5877
5878        switch (type) {
5879        case ISCSI_BOOT_TGT_NAME:
5880        case ISCSI_BOOT_TGT_IP_ADDR:
5881        case ISCSI_BOOT_TGT_PORT:
5882        case ISCSI_BOOT_TGT_CHAP_NAME:
5883        case ISCSI_BOOT_TGT_CHAP_SECRET:
5884        case ISCSI_BOOT_TGT_REV_CHAP_NAME:
5885        case ISCSI_BOOT_TGT_REV_CHAP_SECRET:
5886        case ISCSI_BOOT_TGT_NIC_ASSOC:
5887        case ISCSI_BOOT_TGT_FLAGS:
5888                rc = S_IRUGO;
5889                break;
5890        default:
5891                rc = 0;
5892                break;
5893        }
5894        return rc;
5895}
5896
5897static void qla4xxx_boot_release(void *data)
5898{
5899        struct scsi_qla_host *ha = data;
5900
5901        scsi_host_put(ha->host);
5902}
5903
5904static int get_fw_boot_info(struct scsi_qla_host *ha, uint16_t ddb_index[])
5905{
5906        dma_addr_t buf_dma;
5907        uint32_t addr, pri_addr, sec_addr;
5908        uint32_t offset;
5909        uint16_t func_num;
5910        uint8_t val;
5911        uint8_t *buf = NULL;
5912        size_t size = 13 * sizeof(uint8_t);
5913        int ret = QLA_SUCCESS;
5914
5915        func_num = PCI_FUNC(ha->pdev->devfn);
5916
5917        ql4_printk(KERN_INFO, ha, "%s: Get FW boot info for 0x%x func %d\n",
5918                   __func__, ha->pdev->device, func_num);
5919
5920        if (is_qla40XX(ha)) {
5921                if (func_num == 1) {
5922                        addr = NVRAM_PORT0_BOOT_MODE;
5923                        pri_addr = NVRAM_PORT0_BOOT_PRI_TGT;
5924                        sec_addr = NVRAM_PORT0_BOOT_SEC_TGT;
5925                } else if (func_num == 3) {
5926                        addr = NVRAM_PORT1_BOOT_MODE;
5927                        pri_addr = NVRAM_PORT1_BOOT_PRI_TGT;
5928                        sec_addr = NVRAM_PORT1_BOOT_SEC_TGT;
5929                } else {
5930                        ret = QLA_ERROR;
5931                        goto exit_boot_info;
5932                }
5933
5934                /* Check Boot Mode */
5935                val = rd_nvram_byte(ha, addr);
5936                if (!(val & 0x07)) {
5937                        DEBUG2(ql4_printk(KERN_INFO, ha, "%s: Adapter boot "
5938                                          "options : 0x%x\n", __func__, val));
5939                        ret = QLA_ERROR;
5940                        goto exit_boot_info;
5941                }
5942
5943                /* get primary valid target index */
5944                val = rd_nvram_byte(ha, pri_addr);
5945                if (val & BIT_7)
5946                        ddb_index[0] = (val & 0x7f);
5947
5948                /* get secondary valid target index */
5949                val = rd_nvram_byte(ha, sec_addr);
5950                if (val & BIT_7)
5951                        ddb_index[1] = (val & 0x7f);
5952                goto exit_boot_info;
5953        } else if (is_qla80XX(ha)) {
5954                buf = dma_alloc_coherent(&ha->pdev->dev, size,
5955                                         &buf_dma, GFP_KERNEL);
5956                if (!buf) {
5957                        DEBUG2(ql4_printk(KERN_ERR, ha,
5958                                          "%s: Unable to allocate dma buffer\n",
5959                                           __func__));
5960                        ret = QLA_ERROR;
5961                        goto exit_boot_info;
5962                }
5963
5964                if (ha->port_num == 0)
5965                        offset = BOOT_PARAM_OFFSET_PORT0;
5966                else if (ha->port_num == 1)
5967                        offset = BOOT_PARAM_OFFSET_PORT1;
5968                else {
5969                        ret = QLA_ERROR;
5970                        goto exit_boot_info_free;
5971                }
5972                addr = FLASH_RAW_ACCESS_ADDR + (ha->hw.flt_iscsi_param * 4) +
5973                       offset;
5974                if (qla4xxx_get_flash(ha, buf_dma, addr,
5975                                      13 * sizeof(uint8_t)) != QLA_SUCCESS) {
5976                        DEBUG2(ql4_printk(KERN_ERR, ha, "scsi%ld: %s: Get Flash"
5977                                          " failed\n", ha->host_no, __func__));
5978                        ret = QLA_ERROR;
5979                        goto exit_boot_info_free;
5980                }
5981                /* Check Boot Mode */
5982                if (!(buf[1] & 0x07)) {
5983                        DEBUG2(ql4_printk(KERN_INFO, ha, "Firmware boot options"
5984                                          " : 0x%x\n", buf[1]));
5985                        ret = QLA_ERROR;
5986                        goto exit_boot_info_free;
5987                }
5988
5989                /* get primary valid target index */
5990                if (buf[2] & BIT_7)
5991                        ddb_index[0] = buf[2] & 0x7f;
5992
5993                /* get secondary valid target index */
5994                if (buf[11] & BIT_7)
5995                        ddb_index[1] = buf[11] & 0x7f;
5996        } else {
5997                ret = QLA_ERROR;
5998                goto exit_boot_info;
5999        }
6000
6001        DEBUG2(ql4_printk(KERN_INFO, ha, "%s: Primary target ID %d, Secondary"
6002                          " target ID %d\n", __func__, ddb_index[0],
6003                          ddb_index[1]));
6004
6005exit_boot_info_free:
6006        dma_free_coherent(&ha->pdev->dev, size, buf, buf_dma);
6007exit_boot_info:
6008        ha->pri_ddb_idx = ddb_index[0];
6009        ha->sec_ddb_idx = ddb_index[1];
6010        return ret;
6011}
6012
6013/**
6014 * qla4xxx_get_bidi_chap - Get a BIDI CHAP user and password
6015 * @ha: pointer to adapter structure
6016 * @username: CHAP username to be returned
6017 * @password: CHAP password to be returned
6018 *
6019 * If a boot entry has BIDI CHAP enabled then we need to set the BIDI CHAP
6020 * user and password in the sysfs entry in /sys/firmware/iscsi_boot#/.
6021 * So from the CHAP cache find the first BIDI CHAP entry and set it
6022 * to the boot record in sysfs.
6023 **/
6024static int qla4xxx_get_bidi_chap(struct scsi_qla_host *ha, char *username,
6025                            char *password)
6026{
6027        int i, ret = -EINVAL;
6028        int max_chap_entries = 0;
6029        struct ql4_chap_table *chap_table;
6030
6031        if (is_qla80XX(ha))
6032                max_chap_entries = (ha->hw.flt_chap_size / 2) /
6033                                                sizeof(struct ql4_chap_table);
6034        else
6035                max_chap_entries = MAX_CHAP_ENTRIES_40XX;
6036
6037        if (!ha->chap_list) {
6038                ql4_printk(KERN_ERR, ha, "Do not have CHAP table cache\n");
6039                return ret;
6040        }
6041
6042        mutex_lock(&ha->chap_sem);
6043        for (i = 0; i < max_chap_entries; i++) {
6044                chap_table = (struct ql4_chap_table *)ha->chap_list + i;
6045                if (chap_table->cookie !=
6046                    cpu_to_le16(CHAP_VALID_COOKIE)) {
6047                        continue;
6048                }
6049
6050                if (chap_table->flags & BIT_7) /* local */
6051                        continue;
6052
6053                if (!(chap_table->flags & BIT_6)) /* Not BIDI */
6054                        continue;
6055
6056                strlcpy(password, chap_table->secret, QL4_CHAP_MAX_SECRET_LEN);
6057                strlcpy(username, chap_table->name, QL4_CHAP_MAX_NAME_LEN);
6058                ret = 0;
6059                break;
6060        }
6061        mutex_unlock(&ha->chap_sem);
6062
6063        return ret;
6064}
6065
6066
6067static int qla4xxx_get_boot_target(struct scsi_qla_host *ha,
6068                                   struct ql4_boot_session_info *boot_sess,
6069                                   uint16_t ddb_index)
6070{
6071        struct ql4_conn_info *boot_conn = &boot_sess->conn_list[0];
6072        struct dev_db_entry *fw_ddb_entry;
6073        dma_addr_t fw_ddb_entry_dma;
6074        uint16_t idx;
6075        uint16_t options;
6076        int ret = QLA_SUCCESS;
6077
6078        fw_ddb_entry = dma_alloc_coherent(&ha->pdev->dev, sizeof(*fw_ddb_entry),
6079                                          &fw_ddb_entry_dma, GFP_KERNEL);
6080        if (!fw_ddb_entry) {
6081                DEBUG2(ql4_printk(KERN_ERR, ha,
6082                                  "%s: Unable to allocate dma buffer.\n",
6083                                  __func__));
6084                ret = QLA_ERROR;
6085                return ret;
6086        }
6087
6088        if (qla4xxx_bootdb_by_index(ha, fw_ddb_entry,
6089                                   fw_ddb_entry_dma, ddb_index)) {
6090                DEBUG2(ql4_printk(KERN_INFO, ha, "%s: No Flash DDB found at "
6091                                  "index [%d]\n", __func__, ddb_index));
6092                ret = QLA_ERROR;
6093                goto exit_boot_target;
6094        }
6095
6096        /* Update target name and IP from DDB */
6097        memcpy(boot_sess->target_name, fw_ddb_entry->iscsi_name,
6098               min(sizeof(boot_sess->target_name),
6099                   sizeof(fw_ddb_entry->iscsi_name)));
6100
6101        options = le16_to_cpu(fw_ddb_entry->options);
6102        if (options & DDB_OPT_IPV6_DEVICE) {
6103                memcpy(&boot_conn->dest_ipaddr.ip_address,
6104                       &fw_ddb_entry->ip_addr[0], IPv6_ADDR_LEN);
6105        } else {
6106                boot_conn->dest_ipaddr.ip_type = 0x1;
6107                memcpy(&boot_conn->dest_ipaddr.ip_address,
6108                       &fw_ddb_entry->ip_addr[0], IP_ADDR_LEN);
6109        }
6110
6111        boot_conn->dest_port = le16_to_cpu(fw_ddb_entry->port);
6112
6113        /* update chap information */
6114        idx = __le16_to_cpu(fw_ddb_entry->chap_tbl_idx);
6115
6116        if (BIT_7 & le16_to_cpu(fw_ddb_entry->iscsi_options))   {
6117
6118                DEBUG2(ql4_printk(KERN_INFO, ha, "Setting chap\n"));
6119
6120                ret = qla4xxx_get_chap(ha, (char *)&boot_conn->chap.
6121                                       target_chap_name,
6122                                       (char *)&boot_conn->chap.target_secret,
6123                                       idx);
6124                if (ret) {
6125                        ql4_printk(KERN_ERR, ha, "Failed to set chap\n");
6126                        ret = QLA_ERROR;
6127                        goto exit_boot_target;
6128                }
6129
6130                boot_conn->chap.target_chap_name_length = QL4_CHAP_MAX_NAME_LEN;
6131                boot_conn->chap.target_secret_length = QL4_CHAP_MAX_SECRET_LEN;
6132        }
6133
6134        if (BIT_4 & le16_to_cpu(fw_ddb_entry->iscsi_options)) {
6135
6136                DEBUG2(ql4_printk(KERN_INFO, ha, "Setting BIDI chap\n"));
6137
6138                ret = qla4xxx_get_bidi_chap(ha,
6139                                    (char *)&boot_conn->chap.intr_chap_name,
6140                                    (char *)&boot_conn->chap.intr_secret);
6141
6142                if (ret) {
6143                        ql4_printk(KERN_ERR, ha, "Failed to set BIDI chap\n");
6144                        ret = QLA_ERROR;
6145                        goto exit_boot_target;
6146                }
6147
6148                boot_conn->chap.intr_chap_name_length = QL4_CHAP_MAX_NAME_LEN;
6149                boot_conn->chap.intr_secret_length = QL4_CHAP_MAX_SECRET_LEN;
6150        }
6151
6152exit_boot_target:
6153        dma_free_coherent(&ha->pdev->dev, sizeof(*fw_ddb_entry),
6154                          fw_ddb_entry, fw_ddb_entry_dma);
6155        return ret;
6156}
6157
6158static int qla4xxx_get_boot_info(struct scsi_qla_host *ha)
6159{
6160        uint16_t ddb_index[2];
6161        int ret = QLA_ERROR;
6162        int rval;
6163
6164        memset(ddb_index, 0, sizeof(ddb_index));
6165        ddb_index[0] = 0xffff;
6166        ddb_index[1] = 0xffff;
6167        ret = get_fw_boot_info(ha, ddb_index);
6168        if (ret != QLA_SUCCESS) {
6169                DEBUG2(ql4_printk(KERN_INFO, ha,
6170                                "%s: No boot target configured.\n", __func__));
6171                return ret;
6172        }
6173
6174        if (ql4xdisablesysfsboot)
6175                return QLA_SUCCESS;
6176
6177        if (ddb_index[0] == 0xffff)
6178                goto sec_target;
6179
6180        rval = qla4xxx_get_boot_target(ha, &(ha->boot_tgt.boot_pri_sess),
6181                                      ddb_index[0]);
6182        if (rval != QLA_SUCCESS) {
6183                DEBUG2(ql4_printk(KERN_INFO, ha, "%s: Primary boot target not "
6184                                  "configured\n", __func__));
6185        } else
6186                ret = QLA_SUCCESS;
6187
6188sec_target:
6189        if (ddb_index[1] == 0xffff)
6190                goto exit_get_boot_info;
6191
6192        rval = qla4xxx_get_boot_target(ha, &(ha->boot_tgt.boot_sec_sess),
6193                                      ddb_index[1]);
6194        if (rval != QLA_SUCCESS) {
6195                DEBUG2(ql4_printk(KERN_INFO, ha, "%s: Secondary boot target not"
6196                                  " configured\n", __func__));
6197        } else
6198                ret = QLA_SUCCESS;
6199
6200exit_get_boot_info:
6201        return ret;
6202}
6203
6204static int qla4xxx_setup_boot_info(struct scsi_qla_host *ha)
6205{
6206        struct iscsi_boot_kobj *boot_kobj;
6207
6208        if (qla4xxx_get_boot_info(ha) != QLA_SUCCESS)
6209                return QLA_ERROR;
6210
6211        if (ql4xdisablesysfsboot) {
6212                ql4_printk(KERN_INFO, ha,
6213                           "%s: syfsboot disabled - driver will trigger login "
6214                           "and publish session for discovery .\n", __func__);
6215                return QLA_SUCCESS;
6216        }
6217
6218
6219        ha->boot_kset = iscsi_boot_create_host_kset(ha->host->host_no);
6220        if (!ha->boot_kset)
6221                goto kset_free;
6222
6223        if (!scsi_host_get(ha->host))
6224                goto kset_free;
6225        boot_kobj = iscsi_boot_create_target(ha->boot_kset, 0, ha,
6226                                             qla4xxx_show_boot_tgt_pri_info,
6227                                             qla4xxx_tgt_get_attr_visibility,
6228                                             qla4xxx_boot_release);
6229        if (!boot_kobj)
6230                goto put_host;
6231
6232        if (!scsi_host_get(ha->host))
6233                goto kset_free;
6234        boot_kobj = iscsi_boot_create_target(ha->boot_kset, 1, ha,
6235                                             qla4xxx_show_boot_tgt_sec_info,
6236                                             qla4xxx_tgt_get_attr_visibility,
6237                                             qla4xxx_boot_release);
6238        if (!boot_kobj)
6239                goto put_host;
6240
6241        if (!scsi_host_get(ha->host))
6242                goto kset_free;
6243        boot_kobj = iscsi_boot_create_initiator(ha->boot_kset, 0, ha,
6244                                               qla4xxx_show_boot_ini_info,
6245                                               qla4xxx_ini_get_attr_visibility,
6246                                               qla4xxx_boot_release);
6247        if (!boot_kobj)
6248                goto put_host;
6249
6250        if (!scsi_host_get(ha->host))
6251                goto kset_free;
6252        boot_kobj = iscsi_boot_create_ethernet(ha->boot_kset, 0, ha,
6253                                               qla4xxx_show_boot_eth_info,
6254                                               qla4xxx_eth_get_attr_visibility,
6255                                               qla4xxx_boot_release);
6256        if (!boot_kobj)
6257                goto put_host;
6258
6259        return QLA_SUCCESS;
6260
6261put_host:
6262        scsi_host_put(ha->host);
6263kset_free:
6264        iscsi_boot_destroy_kset(ha->boot_kset);
6265        return -ENOMEM;
6266}
6267
6268
6269static void qla4xxx_get_param_ddb(struct ddb_entry *ddb_entry,
6270                                  struct ql4_tuple_ddb *tddb)
6271{
6272        struct iscsi_cls_session *cls_sess;
6273        struct iscsi_cls_conn *cls_conn;
6274        struct iscsi_session *sess;
6275        struct iscsi_conn *conn;
6276
6277        DEBUG2(printk(KERN_INFO "Func: %s\n", __func__));
6278        cls_sess = ddb_entry->sess;
6279        sess = cls_sess->dd_data;
6280        cls_conn = ddb_entry->conn;
6281        conn = cls_conn->dd_data;
6282
6283        tddb->tpgt = sess->tpgt;
6284        tddb->port = conn->persistent_port;
6285        strlcpy(tddb->iscsi_name, sess->targetname, ISCSI_NAME_SIZE);
6286        strlcpy(tddb->ip_addr, conn->persistent_address, DDB_IPADDR_LEN);
6287}
6288
6289static void qla4xxx_convert_param_ddb(struct dev_db_entry *fw_ddb_entry,
6290                                      struct ql4_tuple_ddb *tddb,
6291                                      uint8_t *flash_isid)
6292{
6293        uint16_t options = 0;
6294
6295        tddb->tpgt = le32_to_cpu(fw_ddb_entry->tgt_portal_grp);
6296        memcpy(&tddb->iscsi_name[0], &fw_ddb_entry->iscsi_name[0],
6297               min(sizeof(tddb->iscsi_name), sizeof(fw_ddb_entry->iscsi_name)));
6298
6299        options = le16_to_cpu(fw_ddb_entry->options);
6300        if (options & DDB_OPT_IPV6_DEVICE)
6301                sprintf(tddb->ip_addr, "%pI6", fw_ddb_entry->ip_addr);
6302        else
6303                sprintf(tddb->ip_addr, "%pI4", fw_ddb_entry->ip_addr);
6304
6305        tddb->port = le16_to_cpu(fw_ddb_entry->port);
6306
6307        if (flash_isid == NULL)
6308                memcpy(&tddb->isid[0], &fw_ddb_entry->isid[0],
6309                       sizeof(tddb->isid));
6310        else
6311                memcpy(&tddb->isid[0], &flash_isid[0], sizeof(tddb->isid));
6312}
6313
6314static int qla4xxx_compare_tuple_ddb(struct scsi_qla_host *ha,
6315                                     struct ql4_tuple_ddb *old_tddb,
6316                                     struct ql4_tuple_ddb *new_tddb,
6317                                     uint8_t is_isid_compare)
6318{
6319        if (strcmp(old_tddb->iscsi_name, new_tddb->iscsi_name))
6320                return QLA_ERROR;
6321
6322        if (strcmp(old_tddb->ip_addr, new_tddb->ip_addr))
6323                return QLA_ERROR;
6324
6325        if (old_tddb->port != new_tddb->port)
6326                return QLA_ERROR;
6327
6328        /* For multi sessions, driver generates the ISID, so do not compare
6329         * ISID in reset path since it would be a comparison between the
6330         * driver generated ISID and firmware generated ISID. This could
6331         * lead to adding duplicated DDBs in the list as driver generated
6332         * ISID would not match firmware generated ISID.
6333         */
6334        if (is_isid_compare) {
6335                DEBUG2(ql4_printk(KERN_INFO, ha,
6336                        "%s: old ISID [%pmR] New ISID [%pmR]\n",
6337                        __func__, old_tddb->isid, new_tddb->isid));
6338
6339                if (memcmp(&old_tddb->isid[0], &new_tddb->isid[0],
6340                           sizeof(old_tddb->isid)))
6341                        return QLA_ERROR;
6342        }
6343
6344        DEBUG2(ql4_printk(KERN_INFO, ha,
6345                          "Match Found, fw[%d,%d,%s,%s], [%d,%d,%s,%s]",
6346                          old_tddb->port, old_tddb->tpgt, old_tddb->ip_addr,
6347                          old_tddb->iscsi_name, new_tddb->port, new_tddb->tpgt,
6348                          new_tddb->ip_addr, new_tddb->iscsi_name));
6349
6350        return QLA_SUCCESS;
6351}
6352
6353static int qla4xxx_is_session_exists(struct scsi_qla_host *ha,
6354                                     struct dev_db_entry *fw_ddb_entry,
6355                                     uint32_t *index)
6356{
6357        struct ddb_entry *ddb_entry;
6358        struct ql4_tuple_ddb *fw_tddb = NULL;
6359        struct ql4_tuple_ddb *tmp_tddb = NULL;
6360        int idx;
6361        int ret = QLA_ERROR;
6362
6363        fw_tddb = vzalloc(sizeof(*fw_tddb));
6364        if (!fw_tddb) {
6365                DEBUG2(ql4_printk(KERN_WARNING, ha,
6366                                  "Memory Allocation failed.\n"));
6367                ret = QLA_SUCCESS;
6368                goto exit_check;
6369        }
6370
6371        tmp_tddb = vzalloc(sizeof(*tmp_tddb));
6372        if (!tmp_tddb) {
6373                DEBUG2(ql4_printk(KERN_WARNING, ha,
6374                                  "Memory Allocation failed.\n"));
6375                ret = QLA_SUCCESS;
6376                goto exit_check;
6377        }
6378
6379        qla4xxx_convert_param_ddb(fw_ddb_entry, fw_tddb, NULL);
6380
6381        for (idx = 0; idx < MAX_DDB_ENTRIES; idx++) {
6382                ddb_entry = qla4xxx_lookup_ddb_by_fw_index(ha, idx);
6383                if (ddb_entry == NULL)
6384                        continue;
6385
6386                qla4xxx_get_param_ddb(ddb_entry, tmp_tddb);
6387                if (!qla4xxx_compare_tuple_ddb(ha, fw_tddb, tmp_tddb, false)) {
6388                        ret = QLA_SUCCESS; /* found */
6389                        if (index != NULL)
6390                                *index = idx;
6391                        goto exit_check;
6392                }
6393        }
6394
6395exit_check:
6396        vfree(fw_tddb);
6397        vfree(tmp_tddb);
6398        return ret;
6399}
6400
6401/**
6402 * qla4xxx_check_existing_isid - check if target with same isid exist
6403 *                               in target list
6404 * @list_nt: list of target
6405 * @isid: isid to check
6406 *
6407 * This routine return QLA_SUCCESS if target with same isid exist
6408 **/
6409static int qla4xxx_check_existing_isid(struct list_head *list_nt, uint8_t *isid)
6410{
6411        struct qla_ddb_index *nt_ddb_idx, *nt_ddb_idx_tmp;
6412        struct dev_db_entry *fw_ddb_entry;
6413
6414        list_for_each_entry_safe(nt_ddb_idx, nt_ddb_idx_tmp, list_nt, list) {
6415                fw_ddb_entry = &nt_ddb_idx->fw_ddb;
6416
6417                if (memcmp(&fw_ddb_entry->isid[0], &isid[0],
6418                           sizeof(nt_ddb_idx->fw_ddb.isid)) == 0) {
6419                        return QLA_SUCCESS;
6420                }
6421        }
6422        return QLA_ERROR;
6423}
6424
6425/**
6426 * qla4xxx_update_isid - compare ddbs and updated isid
6427 * @ha: Pointer to host adapter structure.
6428 * @list_nt: list of nt target
6429 * @fw_ddb_entry: firmware ddb entry
6430 *
6431 * This routine update isid if ddbs have same iqn, same isid and
6432 * different IP addr.
6433 * Return QLA_SUCCESS if isid is updated.
6434 **/
6435static int qla4xxx_update_isid(struct scsi_qla_host *ha,
6436                               struct list_head *list_nt,
6437                               struct dev_db_entry *fw_ddb_entry)
6438{
6439        uint8_t base_value, i;
6440
6441        base_value = fw_ddb_entry->isid[1] & 0x1f;
6442        for (i = 0; i < 8; i++) {
6443                fw_ddb_entry->isid[1] = (base_value | (i << 5));
6444                if (qla4xxx_check_existing_isid(list_nt, fw_ddb_entry->isid))
6445                        break;
6446        }
6447
6448        if (!qla4xxx_check_existing_isid(list_nt, fw_ddb_entry->isid))
6449                return QLA_ERROR;
6450
6451        return QLA_SUCCESS;
6452}
6453
6454/**
6455 * qla4xxx_should_update_isid - check if isid need to update
6456 * @ha: Pointer to host adapter structure.
6457 * @old_tddb: ddb tuple
6458 * @new_tddb: ddb tuple
6459 *
6460 * Return QLA_SUCCESS if different IP, different PORT, same iqn,
6461 * same isid
6462 **/
6463static int qla4xxx_should_update_isid(struct scsi_qla_host *ha,
6464                                      struct ql4_tuple_ddb *old_tddb,
6465                                      struct ql4_tuple_ddb *new_tddb)
6466{
6467        if (strcmp(old_tddb->ip_addr, new_tddb->ip_addr) == 0) {
6468                /* Same ip */
6469                if (old_tddb->port == new_tddb->port)
6470                        return QLA_ERROR;
6471        }
6472
6473        if (strcmp(old_tddb->iscsi_name, new_tddb->iscsi_name))
6474                /* different iqn */
6475                return QLA_ERROR;
6476
6477        if (memcmp(&old_tddb->isid[0], &new_tddb->isid[0],
6478                   sizeof(old_tddb->isid)))
6479                /* different isid */
6480                return QLA_ERROR;
6481
6482        return QLA_SUCCESS;
6483}
6484
6485/**
6486 * qla4xxx_is_flash_ddb_exists - check if fw_ddb_entry already exists in list_nt
6487 * @ha: Pointer to host adapter structure.
6488 * @list_nt: list of nt target.
6489 * @fw_ddb_entry: firmware ddb entry.
6490 *
6491 * This routine check if fw_ddb_entry already exists in list_nt to avoid
6492 * duplicate ddb in list_nt.
6493 * Return QLA_SUCCESS if duplicate ddb exit in list_nl.
6494 * Note: This function also update isid of DDB if required.
6495 **/
6496
6497static int qla4xxx_is_flash_ddb_exists(struct scsi_qla_host *ha,
6498                                       struct list_head *list_nt,
6499                                       struct dev_db_entry *fw_ddb_entry)
6500{
6501        struct qla_ddb_index  *nt_ddb_idx, *nt_ddb_idx_tmp;
6502        struct ql4_tuple_ddb *fw_tddb = NULL;
6503        struct ql4_tuple_ddb *tmp_tddb = NULL;
6504        int rval, ret = QLA_ERROR;
6505
6506        fw_tddb = vzalloc(sizeof(*fw_tddb));
6507        if (!fw_tddb) {
6508                DEBUG2(ql4_printk(KERN_WARNING, ha,
6509                                  "Memory Allocation failed.\n"));
6510                ret = QLA_SUCCESS;
6511                goto exit_check;
6512        }
6513
6514        tmp_tddb = vzalloc(sizeof(*tmp_tddb));
6515        if (!tmp_tddb) {
6516                DEBUG2(ql4_printk(KERN_WARNING, ha,
6517                                  "Memory Allocation failed.\n"));
6518                ret = QLA_SUCCESS;
6519                goto exit_check;
6520        }
6521
6522        qla4xxx_convert_param_ddb(fw_ddb_entry, fw_tddb, NULL);
6523
6524        list_for_each_entry_safe(nt_ddb_idx, nt_ddb_idx_tmp, list_nt, list) {
6525                qla4xxx_convert_param_ddb(&nt_ddb_idx->fw_ddb, tmp_tddb,
6526                                          nt_ddb_idx->flash_isid);
6527                ret = qla4xxx_compare_tuple_ddb(ha, fw_tddb, tmp_tddb, true);
6528                /* found duplicate ddb */
6529                if (ret == QLA_SUCCESS)
6530                        goto exit_check;
6531        }
6532
6533        list_for_each_entry_safe(nt_ddb_idx, nt_ddb_idx_tmp, list_nt, list) {
6534                qla4xxx_convert_param_ddb(&nt_ddb_idx->fw_ddb, tmp_tddb, NULL);
6535
6536                ret = qla4xxx_should_update_isid(ha, tmp_tddb, fw_tddb);
6537                if (ret == QLA_SUCCESS) {
6538                        rval = qla4xxx_update_isid(ha, list_nt, fw_ddb_entry);
6539                        if (rval == QLA_SUCCESS)
6540                                ret = QLA_ERROR;
6541                        else
6542                                ret = QLA_SUCCESS;
6543
6544                        goto exit_check;
6545                }
6546        }
6547
6548exit_check:
6549        vfree(fw_tddb);
6550        vfree(tmp_tddb);
6551        return ret;
6552}
6553
6554static void qla4xxx_free_ddb_list(struct list_head *list_ddb)
6555{
6556        struct qla_ddb_index  *ddb_idx, *ddb_idx_tmp;
6557
6558        list_for_each_entry_safe(ddb_idx, ddb_idx_tmp, list_ddb, list) {
6559                list_del_init(&ddb_idx->list);
6560                vfree(ddb_idx);
6561        }
6562}
6563
6564static struct iscsi_endpoint *qla4xxx_get_ep_fwdb(struct scsi_qla_host *ha,
6565                                        struct dev_db_entry *fw_ddb_entry)
6566{
6567        struct iscsi_endpoint *ep;
6568        struct sockaddr_in *addr;
6569        struct sockaddr_in6 *addr6;
6570        struct sockaddr *t_addr;
6571        struct sockaddr_storage *dst_addr;
6572        char *ip;
6573
6574        /* TODO: need to destroy on unload iscsi_endpoint*/
6575        dst_addr = vmalloc(sizeof(*dst_addr));
6576        if (!dst_addr)
6577                return NULL;
6578
6579        if (fw_ddb_entry->options & DDB_OPT_IPV6_DEVICE) {
6580                t_addr = (struct sockaddr *)dst_addr;
6581                t_addr->sa_family = AF_INET6;
6582                addr6 = (struct sockaddr_in6 *)dst_addr;
6583                ip = (char *)&addr6->sin6_addr;
6584                memcpy(ip, fw_ddb_entry->ip_addr, IPv6_ADDR_LEN);
6585                addr6->sin6_port = htons(le16_to_cpu(fw_ddb_entry->port));
6586
6587        } else {
6588                t_addr = (struct sockaddr *)dst_addr;
6589                t_addr->sa_family = AF_INET;
6590                addr = (struct sockaddr_in *)dst_addr;
6591                ip = (char *)&addr->sin_addr;
6592                memcpy(ip, fw_ddb_entry->ip_addr, IP_ADDR_LEN);
6593                addr->sin_port = htons(le16_to_cpu(fw_ddb_entry->port));
6594        }
6595
6596        ep = qla4xxx_ep_connect(ha->host, (struct sockaddr *)dst_addr, 0);
6597        vfree(dst_addr);
6598        return ep;
6599}
6600
6601static int qla4xxx_verify_boot_idx(struct scsi_qla_host *ha, uint16_t idx)
6602{
6603        if (ql4xdisablesysfsboot)
6604                return QLA_SUCCESS;
6605        if (idx == ha->pri_ddb_idx || idx == ha->sec_ddb_idx)
6606                return QLA_ERROR;
6607        return QLA_SUCCESS;
6608}
6609
6610static void qla4xxx_setup_flash_ddb_entry(struct scsi_qla_host *ha,
6611                                          struct ddb_entry *ddb_entry,
6612                                          uint16_t idx)
6613{
6614        uint16_t def_timeout;
6615
6616        ddb_entry->ddb_type = FLASH_DDB;
6617        ddb_entry->fw_ddb_index = INVALID_ENTRY;
6618        ddb_entry->fw_ddb_device_state = DDB_DS_NO_CONNECTION_ACTIVE;
6619        ddb_entry->ha = ha;
6620        ddb_entry->unblock_sess = qla4xxx_unblock_flash_ddb;
6621        ddb_entry->ddb_change = qla4xxx_flash_ddb_change;
6622        ddb_entry->chap_tbl_idx = INVALID_ENTRY;
6623
6624        atomic_set(&ddb_entry->retry_relogin_timer, INVALID_ENTRY);
6625        atomic_set(&ddb_entry->relogin_timer, 0);
6626        atomic_set(&ddb_entry->relogin_retry_count, 0);
6627        def_timeout = le16_to_cpu(ddb_entry->fw_ddb_entry.def_timeout);
6628        ddb_entry->default_relogin_timeout =
6629                (def_timeout > LOGIN_TOV) && (def_timeout < LOGIN_TOV * 10) ?
6630                def_timeout : LOGIN_TOV;
6631        ddb_entry->default_time2wait =
6632                le16_to_cpu(ddb_entry->fw_ddb_entry.iscsi_def_time2wait);
6633
6634        if (ql4xdisablesysfsboot &&
6635            (idx == ha->pri_ddb_idx || idx == ha->sec_ddb_idx))
6636                set_bit(DF_BOOT_TGT, &ddb_entry->flags);
6637}
6638
6639static void qla4xxx_wait_for_ip_configuration(struct scsi_qla_host *ha)
6640{
6641        uint32_t idx = 0;
6642        uint32_t ip_idx[IP_ADDR_COUNT] = {0, 1, 2, 3}; /* 4 IP interfaces */
6643        uint32_t sts[MBOX_REG_COUNT];
6644        uint32_t ip_state;
6645        unsigned long wtime;
6646        int ret;
6647
6648        wtime = jiffies + (HZ * IP_CONFIG_TOV);
6649        do {
6650                for (idx = 0; idx < IP_ADDR_COUNT; idx++) {
6651                        if (ip_idx[idx] == -1)
6652                                continue;
6653
6654                        ret = qla4xxx_get_ip_state(ha, 0, ip_idx[idx], sts);
6655
6656                        if (ret == QLA_ERROR) {
6657                                ip_idx[idx] = -1;
6658                                continue;
6659                        }
6660
6661                        ip_state = (sts[1] & IP_STATE_MASK) >> IP_STATE_SHIFT;
6662
6663                        DEBUG2(ql4_printk(KERN_INFO, ha,
6664                                          "Waiting for IP state for idx = %d, state = 0x%x\n",
6665                                          ip_idx[idx], ip_state));
6666                        if (ip_state == IP_ADDRSTATE_UNCONFIGURED ||
6667                            ip_state == IP_ADDRSTATE_INVALID ||
6668                            ip_state == IP_ADDRSTATE_PREFERRED ||
6669                            ip_state == IP_ADDRSTATE_DEPRICATED ||
6670                            ip_state == IP_ADDRSTATE_DISABLING)
6671                                ip_idx[idx] = -1;
6672                }
6673
6674                /* Break if all IP states checked */
6675                if ((ip_idx[0] == -1) &&
6676                    (ip_idx[1] == -1) &&
6677                    (ip_idx[2] == -1) &&
6678                    (ip_idx[3] == -1))
6679                        break;
6680                schedule_timeout_uninterruptible(HZ);
6681        } while (time_after(wtime, jiffies));
6682}
6683
6684static int qla4xxx_cmp_fw_stentry(struct dev_db_entry *fw_ddb_entry,
6685                                  struct dev_db_entry *flash_ddb_entry)
6686{
6687        uint16_t options = 0;
6688        size_t ip_len = IP_ADDR_LEN;
6689
6690        options = le16_to_cpu(fw_ddb_entry->options);
6691        if (options & DDB_OPT_IPV6_DEVICE)
6692                ip_len = IPv6_ADDR_LEN;
6693
6694        if (memcmp(fw_ddb_entry->ip_addr, flash_ddb_entry->ip_addr, ip_len))
6695                return QLA_ERROR;
6696
6697        if (memcmp(&fw_ddb_entry->isid[0], &flash_ddb_entry->isid[0],
6698                   sizeof(fw_ddb_entry->isid)))
6699                return QLA_ERROR;
6700
6701        if (memcmp(&fw_ddb_entry->port, &flash_ddb_entry->port,
6702                   sizeof(fw_ddb_entry->port)))
6703                return QLA_ERROR;
6704
6705        return QLA_SUCCESS;
6706}
6707
6708static int qla4xxx_find_flash_st_idx(struct scsi_qla_host *ha,
6709                                     struct dev_db_entry *fw_ddb_entry,
6710                                     uint32_t fw_idx, uint32_t *flash_index)
6711{
6712        struct dev_db_entry *flash_ddb_entry;
6713        dma_addr_t flash_ddb_entry_dma;
6714        uint32_t idx = 0;
6715        int max_ddbs;
6716        int ret = QLA_ERROR, status;
6717
6718        max_ddbs =  is_qla40XX(ha) ? MAX_DEV_DB_ENTRIES_40XX :
6719                                     MAX_DEV_DB_ENTRIES;
6720
6721        flash_ddb_entry = dma_pool_alloc(ha->fw_ddb_dma_pool, GFP_KERNEL,
6722                                         &flash_ddb_entry_dma);
6723        if (flash_ddb_entry == NULL || fw_ddb_entry == NULL) {
6724                ql4_printk(KERN_ERR, ha, "Out of memory\n");
6725                goto exit_find_st_idx;
6726        }
6727
6728        status = qla4xxx_flashdb_by_index(ha, flash_ddb_entry,
6729                                          flash_ddb_entry_dma, fw_idx);
6730        if (status == QLA_SUCCESS) {
6731                status = qla4xxx_cmp_fw_stentry(fw_ddb_entry, flash_ddb_entry);
6732                if (status == QLA_SUCCESS) {
6733                        *flash_index = fw_idx;
6734                        ret = QLA_SUCCESS;
6735                        goto exit_find_st_idx;
6736                }
6737        }
6738
6739        for (idx = 0; idx < max_ddbs; idx++) {
6740                status = qla4xxx_flashdb_by_index(ha, flash_ddb_entry,
6741                                                  flash_ddb_entry_dma, idx);
6742                if (status == QLA_ERROR)
6743                        continue;
6744
6745                status = qla4xxx_cmp_fw_stentry(fw_ddb_entry, flash_ddb_entry);
6746                if (status == QLA_SUCCESS) {
6747                        *flash_index = idx;
6748                        ret = QLA_SUCCESS;
6749                        goto exit_find_st_idx;
6750                }
6751        }
6752
6753        if (idx == max_ddbs)
6754                ql4_printk(KERN_ERR, ha, "Failed to find ST [%d] in flash\n",
6755                           fw_idx);
6756
6757exit_find_st_idx:
6758        if (flash_ddb_entry)
6759                dma_pool_free(ha->fw_ddb_dma_pool, flash_ddb_entry,
6760                              flash_ddb_entry_dma);
6761
6762        return ret;
6763}
6764
6765static void qla4xxx_build_st_list(struct scsi_qla_host *ha,
6766                                  struct list_head *list_st)
6767{
6768        struct qla_ddb_index  *st_ddb_idx;
6769        int max_ddbs;
6770        int fw_idx_size;
6771        struct dev_db_entry *fw_ddb_entry;
6772        dma_addr_t fw_ddb_dma;
6773        int ret;
6774        uint32_t idx = 0, next_idx = 0;
6775        uint32_t state = 0, conn_err = 0;
6776        uint32_t flash_index = -1;
6777        uint16_t conn_id = 0;
6778
6779        fw_ddb_entry = dma_pool_alloc(ha->fw_ddb_dma_pool, GFP_KERNEL,
6780                                      &fw_ddb_dma);
6781        if (fw_ddb_entry == NULL) {
6782                DEBUG2(ql4_printk(KERN_ERR, ha, "Out of memory\n"));
6783                goto exit_st_list;
6784        }
6785
6786        max_ddbs =  is_qla40XX(ha) ? MAX_DEV_DB_ENTRIES_40XX :
6787                                     MAX_DEV_DB_ENTRIES;
6788        fw_idx_size = sizeof(struct qla_ddb_index);
6789
6790        for (idx = 0; idx < max_ddbs; idx = next_idx) {
6791                ret = qla4xxx_get_fwddb_entry(ha, idx, fw_ddb_entry, fw_ddb_dma,
6792                                              NULL, &next_idx, &state,
6793                                              &conn_err, NULL, &conn_id);
6794                if (ret == QLA_ERROR)
6795                        break;
6796
6797                /* Ignore DDB if invalid state (unassigned) */
6798                if (state == DDB_DS_UNASSIGNED)
6799                        goto continue_next_st;
6800
6801                /* Check if ST, add to the list_st */
6802                if (strlen((char *) fw_ddb_entry->iscsi_name) != 0)
6803                        goto continue_next_st;
6804
6805                st_ddb_idx = vzalloc(fw_idx_size);
6806                if (!st_ddb_idx)
6807                        break;
6808
6809                ret = qla4xxx_find_flash_st_idx(ha, fw_ddb_entry, idx,
6810                                                &flash_index);
6811                if (ret == QLA_ERROR) {
6812                        ql4_printk(KERN_ERR, ha,
6813                                   "No flash entry for ST at idx [%d]\n", idx);
6814                        st_ddb_idx->flash_ddb_idx = idx;
6815                } else {
6816                        ql4_printk(KERN_INFO, ha,
6817                                   "ST at idx [%d] is stored at flash [%d]\n",
6818                                   idx, flash_index);
6819                        st_ddb_idx->flash_ddb_idx = flash_index;
6820                }
6821
6822                st_ddb_idx->fw_ddb_idx = idx;
6823
6824                list_add_tail(&st_ddb_idx->list, list_st);
6825continue_next_st:
6826                if (next_idx == 0)
6827                        break;
6828        }
6829
6830exit_st_list:
6831        if (fw_ddb_entry)
6832                dma_pool_free(ha->fw_ddb_dma_pool, fw_ddb_entry, fw_ddb_dma);
6833}
6834
6835/**
6836 * qla4xxx_remove_failed_ddb - Remove inactive or failed ddb from list
6837 * @ha: pointer to adapter structure
6838 * @list_ddb: List from which failed ddb to be removed
6839 *
6840 * Iterate over the list of DDBs and find and remove DDBs that are either in
6841 * no connection active state or failed state
6842 **/
6843static void qla4xxx_remove_failed_ddb(struct scsi_qla_host *ha,
6844                                      struct list_head *list_ddb)
6845{
6846        struct qla_ddb_index  *ddb_idx, *ddb_idx_tmp;
6847        uint32_t next_idx = 0;
6848        uint32_t state = 0, conn_err = 0;
6849        int ret;
6850
6851        list_for_each_entry_safe(ddb_idx, ddb_idx_tmp, list_ddb, list) {
6852                ret = qla4xxx_get_fwddb_entry(ha, ddb_idx->fw_ddb_idx,
6853                                              NULL, 0, NULL, &next_idx, &state,
6854                                              &conn_err, NULL, NULL);
6855                if (ret == QLA_ERROR)
6856                        continue;
6857
6858                if (state == DDB_DS_NO_CONNECTION_ACTIVE ||
6859                    state == DDB_DS_SESSION_FAILED) {
6860                        list_del_init(&ddb_idx->list);
6861                        vfree(ddb_idx);
6862                }
6863        }
6864}
6865
6866static void qla4xxx_update_sess_disc_idx(struct scsi_qla_host *ha,
6867                                         struct ddb_entry *ddb_entry,
6868                                         struct dev_db_entry *fw_ddb_entry)
6869{
6870        struct iscsi_cls_session *cls_sess;
6871        struct iscsi_session *sess;
6872        uint32_t max_ddbs = 0;
6873        uint16_t ddb_link = -1;
6874
6875        max_ddbs =  is_qla40XX(ha) ? MAX_DEV_DB_ENTRIES_40XX :
6876                                     MAX_DEV_DB_ENTRIES;
6877
6878        cls_sess = ddb_entry->sess;
6879        sess = cls_sess->dd_data;
6880
6881        ddb_link = le16_to_cpu(fw_ddb_entry->ddb_link);
6882        if (ddb_link < max_ddbs)
6883                sess->discovery_parent_idx = ddb_link;
6884        else
6885                sess->discovery_parent_idx = DDB_NO_LINK;
6886}
6887
6888static int qla4xxx_sess_conn_setup(struct scsi_qla_host *ha,
6889                                   struct dev_db_entry *fw_ddb_entry,
6890                                   int is_reset, uint16_t idx)
6891{
6892        struct iscsi_cls_session *cls_sess;
6893        struct iscsi_session *sess;
6894        struct iscsi_cls_conn *cls_conn;
6895        struct iscsi_endpoint *ep;
6896        uint16_t cmds_max = 32;
6897        uint16_t conn_id = 0;
6898        uint32_t initial_cmdsn = 0;
6899        int ret = QLA_SUCCESS;
6900
6901        struct ddb_entry *ddb_entry = NULL;
6902
6903        /* Create session object, with INVALID_ENTRY,
6904         * the targer_id would get set when we issue the login
6905         */
6906        cls_sess = iscsi_session_setup(&qla4xxx_iscsi_transport, ha->host,
6907                                       cmds_max, sizeof(struct ddb_entry),
6908                                       sizeof(struct ql4_task_data),
6909                                       initial_cmdsn, INVALID_ENTRY);
6910        if (!cls_sess) {
6911                ret = QLA_ERROR;
6912                goto exit_setup;
6913        }
6914
6915        /*
6916         * so calling module_put function to decrement the
6917         * reference count.
6918         **/
6919        module_put(qla4xxx_iscsi_transport.owner);
6920        sess = cls_sess->dd_data;
6921        ddb_entry = sess->dd_data;
6922        ddb_entry->sess = cls_sess;
6923
6924        cls_sess->recovery_tmo = ql4xsess_recovery_tmo;
6925        memcpy(&ddb_entry->fw_ddb_entry, fw_ddb_entry,
6926               sizeof(struct dev_db_entry));
6927
6928        qla4xxx_setup_flash_ddb_entry(ha, ddb_entry, idx);
6929
6930        cls_conn = iscsi_conn_setup(cls_sess, sizeof(struct qla_conn), conn_id);
6931
6932        if (!cls_conn) {
6933                ret = QLA_ERROR;
6934                goto exit_setup;
6935        }
6936
6937        ddb_entry->conn = cls_conn;
6938
6939        /* Setup ep, for displaying attributes in sysfs */
6940        ep = qla4xxx_get_ep_fwdb(ha, fw_ddb_entry);
6941        if (ep) {
6942                ep->conn = cls_conn;
6943                cls_conn->ep = ep;
6944        } else {
6945                DEBUG2(ql4_printk(KERN_ERR, ha, "Unable to get ep\n"));
6946                ret = QLA_ERROR;
6947                goto exit_setup;
6948        }
6949
6950        /* Update sess/conn params */
6951        qla4xxx_copy_fwddb_param(ha, fw_ddb_entry, cls_sess, cls_conn);
6952        qla4xxx_update_sess_disc_idx(ha, ddb_entry, fw_ddb_entry);
6953
6954        if (is_reset == RESET_ADAPTER) {
6955                iscsi_block_session(cls_sess);
6956                /* Use the relogin path to discover new devices
6957                 *  by short-circuiting the logic of setting
6958                 *  timer to relogin - instead set the flags
6959                 *  to initiate login right away.
6960                 */
6961                set_bit(DPC_RELOGIN_DEVICE, &ha->dpc_flags);
6962                set_bit(DF_RELOGIN, &ddb_entry->flags);
6963        }
6964
6965exit_setup:
6966        return ret;
6967}
6968
6969static void qla4xxx_update_fw_ddb_link(struct scsi_qla_host *ha,
6970                                       struct list_head *list_ddb,
6971                                       struct dev_db_entry *fw_ddb_entry)
6972{
6973        struct qla_ddb_index  *ddb_idx, *ddb_idx_tmp;
6974        uint16_t ddb_link;
6975
6976        ddb_link = le16_to_cpu(fw_ddb_entry->ddb_link);
6977
6978        list_for_each_entry_safe(ddb_idx, ddb_idx_tmp, list_ddb, list) {
6979                if (ddb_idx->fw_ddb_idx == ddb_link) {
6980                        DEBUG2(ql4_printk(KERN_INFO, ha,
6981                                          "Updating NT parent idx from [%d] to [%d]\n",
6982                                          ddb_link, ddb_idx->flash_ddb_idx));
6983                        fw_ddb_entry->ddb_link =
6984                                            cpu_to_le16(ddb_idx->flash_ddb_idx);
6985                        return;
6986                }
6987        }
6988}
6989
6990static void qla4xxx_build_nt_list(struct scsi_qla_host *ha,
6991                                  struct list_head *list_nt,
6992                                  struct list_head *list_st,
6993                                  int is_reset)
6994{
6995        struct dev_db_entry *fw_ddb_entry;
6996        struct ddb_entry *ddb_entry = NULL;
6997        dma_addr_t fw_ddb_dma;
6998        int max_ddbs;
6999        int fw_idx_size;
7000        int ret;
7001        uint32_t idx = 0, next_idx = 0;
7002        uint32_t state = 0, conn_err = 0;
7003        uint32_t ddb_idx = -1;
7004        uint16_t conn_id = 0;
7005        uint16_t ddb_link = -1;
7006        struct qla_ddb_index  *nt_ddb_idx;
7007
7008        fw_ddb_entry = dma_pool_alloc(ha->fw_ddb_dma_pool, GFP_KERNEL,
7009                                      &fw_ddb_dma);
7010        if (fw_ddb_entry == NULL) {
7011                DEBUG2(ql4_printk(KERN_ERR, ha, "Out of memory\n"));
7012                goto exit_nt_list;
7013        }
7014        max_ddbs =  is_qla40XX(ha) ? MAX_DEV_DB_ENTRIES_40XX :
7015                                     MAX_DEV_DB_ENTRIES;
7016        fw_idx_size = sizeof(struct qla_ddb_index);
7017
7018        for (idx = 0; idx < max_ddbs; idx = next_idx) {
7019                ret = qla4xxx_get_fwddb_entry(ha, idx, fw_ddb_entry, fw_ddb_dma,
7020                                              NULL, &next_idx, &state,
7021                                              &conn_err, NULL, &conn_id);
7022                if (ret == QLA_ERROR)
7023                        break;
7024
7025                if (qla4xxx_verify_boot_idx(ha, idx) != QLA_SUCCESS)
7026                        goto continue_next_nt;
7027
7028                /* Check if NT, then add to list it */
7029                if (strlen((char *) fw_ddb_entry->iscsi_name) == 0)
7030                        goto continue_next_nt;
7031
7032                ddb_link = le16_to_cpu(fw_ddb_entry->ddb_link);
7033                if (ddb_link < max_ddbs)
7034                        qla4xxx_update_fw_ddb_link(ha, list_st, fw_ddb_entry);
7035
7036                if (!(state == DDB_DS_NO_CONNECTION_ACTIVE ||
7037                    state == DDB_DS_SESSION_FAILED) &&
7038                    (is_reset == INIT_ADAPTER))
7039                        goto continue_next_nt;
7040
7041                DEBUG2(ql4_printk(KERN_INFO, ha,
7042                                  "Adding  DDB to session = 0x%x\n", idx));
7043
7044                if (is_reset == INIT_ADAPTER) {
7045                        nt_ddb_idx = vmalloc(fw_idx_size);
7046                        if (!nt_ddb_idx)
7047                                break;
7048
7049                        nt_ddb_idx->fw_ddb_idx = idx;
7050
7051                        /* Copy original isid as it may get updated in function
7052                         * qla4xxx_update_isid(). We need original isid in
7053                         * function qla4xxx_compare_tuple_ddb to find duplicate
7054                         * target */
7055                        memcpy(&nt_ddb_idx->flash_isid[0],
7056                               &fw_ddb_entry->isid[0],
7057                               sizeof(nt_ddb_idx->flash_isid));
7058
7059                        ret = qla4xxx_is_flash_ddb_exists(ha, list_nt,
7060                                                          fw_ddb_entry);
7061                        if (ret == QLA_SUCCESS) {
7062                                /* free nt_ddb_idx and do not add to list_nt */
7063                                vfree(nt_ddb_idx);
7064                                goto continue_next_nt;
7065                        }
7066
7067                        /* Copy updated isid */
7068                        memcpy(&nt_ddb_idx->fw_ddb, fw_ddb_entry,
7069                               sizeof(struct dev_db_entry));
7070
7071                        list_add_tail(&nt_ddb_idx->list, list_nt);
7072                } else if (is_reset == RESET_ADAPTER) {
7073                        ret = qla4xxx_is_session_exists(ha, fw_ddb_entry,
7074                                                        &ddb_idx);
7075                        if (ret == QLA_SUCCESS) {
7076                                ddb_entry = qla4xxx_lookup_ddb_by_fw_index(ha,
7077                                                                       ddb_idx);
7078                                if (ddb_entry != NULL)
7079                                        qla4xxx_update_sess_disc_idx(ha,
7080                                                                     ddb_entry,
7081                                                                  fw_ddb_entry);
7082                                goto continue_next_nt;
7083                        }
7084                }
7085
7086                ret = qla4xxx_sess_conn_setup(ha, fw_ddb_entry, is_reset, idx);
7087                if (ret == QLA_ERROR)
7088                        goto exit_nt_list;
7089
7090continue_next_nt:
7091                if (next_idx == 0)
7092                        break;
7093        }
7094
7095exit_nt_list:
7096        if (fw_ddb_entry)
7097                dma_pool_free(ha->fw_ddb_dma_pool, fw_ddb_entry, fw_ddb_dma);
7098}
7099
7100static void qla4xxx_build_new_nt_list(struct scsi_qla_host *ha,
7101                                      struct list_head *list_nt,
7102                                      uint16_t target_id)
7103{
7104        struct dev_db_entry *fw_ddb_entry;
7105        dma_addr_t fw_ddb_dma;
7106        int max_ddbs;
7107        int fw_idx_size;
7108        int ret;
7109        uint32_t idx = 0, next_idx = 0;
7110        uint32_t state = 0, conn_err = 0;
7111        uint16_t conn_id = 0;
7112        struct qla_ddb_index  *nt_ddb_idx;
7113
7114        fw_ddb_entry = dma_pool_alloc(ha->fw_ddb_dma_pool, GFP_KERNEL,
7115                                      &fw_ddb_dma);
7116        if (fw_ddb_entry == NULL) {
7117                DEBUG2(ql4_printk(KERN_ERR, ha, "Out of memory\n"));
7118                goto exit_new_nt_list;
7119        }
7120        max_ddbs =  is_qla40XX(ha) ? MAX_DEV_DB_ENTRIES_40XX :
7121                                     MAX_DEV_DB_ENTRIES;
7122        fw_idx_size = sizeof(struct qla_ddb_index);
7123
7124        for (idx = 0; idx < max_ddbs; idx = next_idx) {
7125                ret = qla4xxx_get_fwddb_entry(ha, idx, fw_ddb_entry, fw_ddb_dma,
7126                                              NULL, &next_idx, &state,
7127                                              &conn_err, NULL, &conn_id);
7128                if (ret == QLA_ERROR)
7129                        break;
7130
7131                /* Check if NT, then add it to list */
7132                if (strlen((char *)fw_ddb_entry->iscsi_name) == 0)
7133                        goto continue_next_new_nt;
7134
7135                if (!(state == DDB_DS_NO_CONNECTION_ACTIVE))
7136                        goto continue_next_new_nt;
7137
7138                DEBUG2(ql4_printk(KERN_INFO, ha,
7139                                  "Adding  DDB to session = 0x%x\n", idx));
7140
7141                nt_ddb_idx = vmalloc(fw_idx_size);
7142                if (!nt_ddb_idx)
7143                        break;
7144
7145                nt_ddb_idx->fw_ddb_idx = idx;
7146
7147                ret = qla4xxx_is_session_exists(ha, fw_ddb_entry, NULL);
7148                if (ret == QLA_SUCCESS) {
7149                        /* free nt_ddb_idx and do not add to list_nt */
7150                        vfree(nt_ddb_idx);
7151                        goto continue_next_new_nt;
7152                }
7153
7154                if (target_id < max_ddbs)
7155                        fw_ddb_entry->ddb_link = cpu_to_le16(target_id);
7156
7157                list_add_tail(&nt_ddb_idx->list, list_nt);
7158
7159                ret = qla4xxx_sess_conn_setup(ha, fw_ddb_entry, RESET_ADAPTER,
7160                                              idx);
7161                if (ret == QLA_ERROR)
7162                        goto exit_new_nt_list;
7163
7164continue_next_new_nt:
7165                if (next_idx == 0)
7166                        break;
7167        }
7168
7169exit_new_nt_list:
7170        if (fw_ddb_entry)
7171                dma_pool_free(ha->fw_ddb_dma_pool, fw_ddb_entry, fw_ddb_dma);
7172}
7173
7174/**
7175 * qla4xxx_sysfs_ddb_is_non_persistent - check for non-persistence of ddb entry
7176 * @dev: dev associated with the sysfs entry
7177 * @data: pointer to flashnode session object
7178 *
7179 * Returns:
7180 *      1: if flashnode entry is non-persistent
7181 *      0: if flashnode entry is persistent
7182 **/
7183static int qla4xxx_sysfs_ddb_is_non_persistent(struct device *dev, void *data)
7184{
7185        struct iscsi_bus_flash_session *fnode_sess;
7186
7187        if (!iscsi_flashnode_bus_match(dev, NULL))
7188                return 0;
7189
7190        fnode_sess = iscsi_dev_to_flash_session(dev);
7191
7192        return (fnode_sess->flash_state == DEV_DB_NON_PERSISTENT);
7193}
7194
7195/**
7196 * qla4xxx_sysfs_ddb_tgt_create - Create sysfs entry for target
7197 * @ha: pointer to host
7198 * @fw_ddb_entry: flash ddb data
7199 * @idx: target index
7200 * @user: if set then this call is made from userland else from kernel
7201 *
7202 * Returns:
7203 * On sucess: QLA_SUCCESS
7204 * On failure: QLA_ERROR
7205 *
7206 * This create separate sysfs entries for session and connection attributes of
7207 * the given fw ddb entry.
7208 * If this is invoked as a result of a userspace call then the entry is marked
7209 * as nonpersistent using flash_state field.
7210 **/
7211static int qla4xxx_sysfs_ddb_tgt_create(struct scsi_qla_host *ha,
7212                                        struct dev_db_entry *fw_ddb_entry,
7213                                        uint16_t *idx, int user)
7214{
7215        struct iscsi_bus_flash_session *fnode_sess = NULL;
7216        struct iscsi_bus_flash_conn *fnode_conn = NULL;
7217        int rc = QLA_ERROR;
7218
7219        fnode_sess = iscsi_create_flashnode_sess(ha->host, *idx,
7220                                                 &qla4xxx_iscsi_transport, 0);
7221        if (!fnode_sess) {
7222                ql4_printk(KERN_ERR, ha,
7223                           "%s: Unable to create session sysfs entry for flashnode %d of host%lu\n",
7224                           __func__, *idx, ha->host_no);
7225                goto exit_tgt_create;
7226        }
7227
7228        fnode_conn = iscsi_create_flashnode_conn(ha->host, fnode_sess,
7229                                                 &qla4xxx_iscsi_transport, 0);
7230        if (!fnode_conn) {
7231                ql4_printk(KERN_ERR, ha,
7232                           "%s: Unable to create conn sysfs entry for flashnode %d of host%lu\n",
7233                           __func__, *idx, ha->host_no);
7234                goto free_sess;
7235        }
7236
7237        if (user) {
7238                fnode_sess->flash_state = DEV_DB_NON_PERSISTENT;
7239        } else {
7240                fnode_sess->flash_state = DEV_DB_PERSISTENT;
7241
7242                if (*idx == ha->pri_ddb_idx || *idx == ha->sec_ddb_idx)
7243                        fnode_sess->is_boot_target = 1;
7244                else
7245                        fnode_sess->is_boot_target = 0;
7246        }
7247
7248        rc = qla4xxx_copy_from_fwddb_param(fnode_sess, fnode_conn,
7249                                           fw_ddb_entry);
7250        if (rc)
7251                goto free_sess;
7252
7253        ql4_printk(KERN_INFO, ha, "%s: sysfs entry %s created\n",
7254                   __func__, fnode_sess->dev.kobj.name);
7255
7256        ql4_printk(KERN_INFO, ha, "%s: sysfs entry %s created\n",
7257                   __func__, fnode_conn->dev.kobj.name);
7258
7259        return QLA_SUCCESS;
7260
7261free_sess:
7262        iscsi_destroy_flashnode_sess(fnode_sess);
7263
7264exit_tgt_create:
7265        return QLA_ERROR;
7266}
7267
7268/**
7269 * qla4xxx_sysfs_ddb_add - Add new ddb entry in flash
7270 * @shost: pointer to host
7271 * @buf: type of ddb entry (ipv4/ipv6)
7272 * @len: length of buf
7273 *
7274 * This creates new ddb entry in the flash by finding first free index and
7275 * storing default ddb there. And then create sysfs entry for the new ddb entry.
7276 **/
7277static int qla4xxx_sysfs_ddb_add(struct Scsi_Host *shost, const char *buf,
7278                                 int len)
7279{
7280        struct scsi_qla_host *ha = to_qla_host(shost);
7281        struct dev_db_entry *fw_ddb_entry = NULL;
7282        dma_addr_t fw_ddb_entry_dma;
7283        struct device *dev;
7284        uint16_t idx = 0;
7285        uint16_t max_ddbs = 0;
7286        uint32_t options = 0;
7287        uint32_t rval = QLA_ERROR;
7288
7289        if (strncasecmp(PORTAL_TYPE_IPV4, buf, 4) &&
7290            strncasecmp(PORTAL_TYPE_IPV6, buf, 4)) {
7291                DEBUG2(ql4_printk(KERN_ERR, ha, "%s: Invalid portal type\n",
7292                                  __func__));
7293                goto exit_ddb_add;
7294        }
7295
7296        max_ddbs =  is_qla40XX(ha) ? MAX_PRST_DEV_DB_ENTRIES :
7297                                     MAX_DEV_DB_ENTRIES;
7298
7299        fw_ddb_entry = dma_alloc_coherent(&ha->pdev->dev, sizeof(*fw_ddb_entry),
7300                                          &fw_ddb_entry_dma, GFP_KERNEL);
7301        if (!fw_ddb_entry) {
7302                DEBUG2(ql4_printk(KERN_ERR, ha,
7303                                  "%s: Unable to allocate dma buffer\n",
7304                                  __func__));
7305                goto exit_ddb_add;
7306        }
7307
7308        dev = iscsi_find_flashnode_sess(ha->host, NULL,
7309                                        qla4xxx_sysfs_ddb_is_non_persistent);
7310        if (dev) {
7311                ql4_printk(KERN_ERR, ha,
7312                           "%s: A non-persistent entry %s found\n",
7313                           __func__, dev->kobj.name);
7314                put_device(dev);
7315                goto exit_ddb_add;
7316        }
7317
7318        /* Index 0 and 1 are reserved for boot target entries */
7319        for (idx = 2; idx < max_ddbs; idx++) {
7320                if (qla4xxx_flashdb_by_index(ha, fw_ddb_entry,
7321                                             fw_ddb_entry_dma, idx))
7322                        break;
7323        }
7324
7325        if (idx == max_ddbs)
7326                goto exit_ddb_add;
7327
7328        if (!strncasecmp("ipv6", buf, 4))
7329                options |= IPV6_DEFAULT_DDB_ENTRY;
7330
7331        rval = qla4xxx_get_default_ddb(ha, options, fw_ddb_entry_dma);
7332        if (rval == QLA_ERROR)
7333                goto exit_ddb_add;
7334
7335        rval = qla4xxx_sysfs_ddb_tgt_create(ha, fw_ddb_entry, &idx, 1);
7336
7337exit_ddb_add:
7338        if (fw_ddb_entry)
7339                dma_free_coherent(&ha->pdev->dev, sizeof(*fw_ddb_entry),
7340                                  fw_ddb_entry, fw_ddb_entry_dma);
7341        if (rval == QLA_SUCCESS)
7342                return idx;
7343        else
7344                return -EIO;
7345}
7346
7347/**
7348 * qla4xxx_sysfs_ddb_apply - write the target ddb contents to Flash
7349 * @fnode_sess: pointer to session attrs of flash ddb entry
7350 * @fnode_conn: pointer to connection attrs of flash ddb entry
7351 *
7352 * This writes the contents of target ddb buffer to Flash with a valid cookie
7353 * value in order to make the ddb entry persistent.
7354 **/
7355static int  qla4xxx_sysfs_ddb_apply(struct iscsi_bus_flash_session *fnode_sess,
7356                                    struct iscsi_bus_flash_conn *fnode_conn)
7357{
7358        struct Scsi_Host *shost = iscsi_flash_session_to_shost(fnode_sess);
7359        struct scsi_qla_host *ha = to_qla_host(shost);
7360        uint32_t dev_db_start_offset = FLASH_OFFSET_DB_INFO;
7361        struct dev_db_entry *fw_ddb_entry = NULL;
7362        dma_addr_t fw_ddb_entry_dma;
7363        uint32_t options = 0;
7364        int rval = 0;
7365
7366        fw_ddb_entry = dma_alloc_coherent(&ha->pdev->dev, sizeof(*fw_ddb_entry),
7367                                          &fw_ddb_entry_dma, GFP_KERNEL);
7368        if (!fw_ddb_entry) {
7369                DEBUG2(ql4_printk(KERN_ERR, ha,
7370                                  "%s: Unable to allocate dma buffer\n",
7371                                  __func__));
7372                rval = -ENOMEM;
7373                goto exit_ddb_apply;
7374        }
7375
7376        if (!strncasecmp(fnode_sess->portal_type, PORTAL_TYPE_IPV6, 4))
7377                options |= IPV6_DEFAULT_DDB_ENTRY;
7378
7379        rval = qla4xxx_get_default_ddb(ha, options, fw_ddb_entry_dma);
7380        if (rval == QLA_ERROR)
7381                goto exit_ddb_apply;
7382
7383        dev_db_start_offset += (fnode_sess->target_id *
7384                                sizeof(*fw_ddb_entry));
7385
7386        qla4xxx_copy_to_fwddb_param(fnode_sess, fnode_conn, fw_ddb_entry);
7387        fw_ddb_entry->cookie = DDB_VALID_COOKIE;
7388
7389        rval = qla4xxx_set_flash(ha, fw_ddb_entry_dma, dev_db_start_offset,
7390                                 sizeof(*fw_ddb_entry), FLASH_OPT_RMW_COMMIT);
7391
7392        if (rval == QLA_SUCCESS) {
7393                fnode_sess->flash_state = DEV_DB_PERSISTENT;
7394                ql4_printk(KERN_INFO, ha,
7395                           "%s: flash node %u of host %lu written to flash\n",
7396                           __func__, fnode_sess->target_id, ha->host_no);
7397        } else {
7398                rval = -EIO;
7399                ql4_printk(KERN_ERR, ha,
7400                           "%s: Error while writing flash node %u of host %lu to flash\n",
7401                           __func__, fnode_sess->target_id, ha->host_no);
7402        }
7403
7404exit_ddb_apply:
7405        if (fw_ddb_entry)
7406                dma_free_coherent(&ha->pdev->dev, sizeof(*fw_ddb_entry),
7407                                  fw_ddb_entry, fw_ddb_entry_dma);
7408        return rval;
7409}
7410
7411static ssize_t qla4xxx_sysfs_ddb_conn_open(struct scsi_qla_host *ha,
7412                                           struct dev_db_entry *fw_ddb_entry,
7413                                           uint16_t idx)
7414{
7415        struct dev_db_entry *ddb_entry = NULL;
7416        dma_addr_t ddb_entry_dma;
7417        unsigned long wtime;
7418        uint32_t mbx_sts = 0;
7419        uint32_t state = 0, conn_err = 0;
7420        uint16_t tmo = 0;
7421        int ret = 0;
7422
7423        ddb_entry = dma_alloc_coherent(&ha->pdev->dev, sizeof(*ddb_entry),
7424                                       &ddb_entry_dma, GFP_KERNEL);
7425        if (!ddb_entry) {
7426                DEBUG2(ql4_printk(KERN_ERR, ha,
7427                                  "%s: Unable to allocate dma buffer\n",
7428                                  __func__));
7429                return QLA_ERROR;
7430        }
7431
7432        memcpy(ddb_entry, fw_ddb_entry, sizeof(*ddb_entry));
7433
7434        ret = qla4xxx_set_ddb_entry(ha, idx, ddb_entry_dma, &mbx_sts);
7435        if (ret != QLA_SUCCESS) {
7436                DEBUG2(ql4_printk(KERN_ERR, ha,
7437                                  "%s: Unable to set ddb entry for index %d\n",
7438                                  __func__, idx));
7439                goto exit_ddb_conn_open;
7440        }
7441
7442        qla4xxx_conn_open(ha, idx);
7443
7444        /* To ensure that sendtargets is done, wait for at least 12 secs */
7445        tmo = ((ha->def_timeout > LOGIN_TOV) &&
7446               (ha->def_timeout < LOGIN_TOV * 10) ?
7447               ha->def_timeout : LOGIN_TOV);
7448
7449        DEBUG2(ql4_printk(KERN_INFO, ha,
7450                          "Default time to wait for login to ddb %d\n", tmo));
7451
7452        wtime = jiffies + (HZ * tmo);
7453        do {
7454                ret = qla4xxx_get_fwddb_entry(ha, idx, NULL, 0, NULL,
7455                                              NULL, &state, &conn_err, NULL,
7456                                              NULL);
7457                if (ret == QLA_ERROR)
7458                        continue;
7459
7460                if (state == DDB_DS_NO_CONNECTION_ACTIVE ||
7461                    state == DDB_DS_SESSION_FAILED)
7462                        break;
7463
7464                schedule_timeout_uninterruptible(HZ / 10);
7465        } while (time_after(wtime, jiffies));
7466
7467exit_ddb_conn_open:
7468        if (ddb_entry)
7469                dma_free_coherent(&ha->pdev->dev, sizeof(*ddb_entry),
7470                                  ddb_entry, ddb_entry_dma);
7471        return ret;
7472}
7473
7474static int qla4xxx_ddb_login_st(struct scsi_qla_host *ha,
7475                                struct dev_db_entry *fw_ddb_entry,
7476                                uint16_t target_id)
7477{
7478        struct qla_ddb_index *ddb_idx, *ddb_idx_tmp;
7479        struct list_head list_nt;
7480        uint16_t ddb_index;
7481        int ret = 0;
7482
7483        if (test_bit(AF_ST_DISCOVERY_IN_PROGRESS, &ha->flags)) {
7484                ql4_printk(KERN_WARNING, ha,
7485                           "%s: A discovery already in progress!\n", __func__);
7486                return QLA_ERROR;
7487        }
7488
7489        INIT_LIST_HEAD(&list_nt);
7490
7491        set_bit(AF_ST_DISCOVERY_IN_PROGRESS, &ha->flags);
7492
7493        ret = qla4xxx_get_ddb_index(ha, &ddb_index);
7494        if (ret == QLA_ERROR)
7495                goto exit_login_st_clr_bit;
7496
7497        ret = qla4xxx_sysfs_ddb_conn_open(ha, fw_ddb_entry, ddb_index);
7498        if (ret == QLA_ERROR)
7499                goto exit_login_st;
7500
7501        qla4xxx_build_new_nt_list(ha, &list_nt, target_id);
7502
7503        list_for_each_entry_safe(ddb_idx, ddb_idx_tmp, &list_nt, list) {
7504                list_del_init(&ddb_idx->list);
7505                qla4xxx_clear_ddb_entry(ha, ddb_idx->fw_ddb_idx);
7506                vfree(ddb_idx);
7507        }
7508
7509exit_login_st:
7510        if (qla4xxx_clear_ddb_entry(ha, ddb_index) == QLA_ERROR) {
7511                ql4_printk(KERN_ERR, ha,
7512                           "Unable to clear DDB index = 0x%x\n", ddb_index);
7513        }
7514
7515        clear_bit(ddb_index, ha->ddb_idx_map);
7516
7517exit_login_st_clr_bit:
7518        clear_bit(AF_ST_DISCOVERY_IN_PROGRESS, &ha->flags);
7519        return ret;
7520}
7521
7522static int qla4xxx_ddb_login_nt(struct scsi_qla_host *ha,
7523                                struct dev_db_entry *fw_ddb_entry,
7524                                uint16_t idx)
7525{
7526        int ret = QLA_ERROR;
7527
7528        ret = qla4xxx_is_session_exists(ha, fw_ddb_entry, NULL);
7529        if (ret != QLA_SUCCESS)
7530                ret = qla4xxx_sess_conn_setup(ha, fw_ddb_entry, RESET_ADAPTER,
7531                                              idx);
7532        else
7533                ret = -EPERM;
7534
7535        return ret;
7536}
7537
7538/**
7539 * qla4xxx_sysfs_ddb_login - Login to the specified target
7540 * @fnode_sess: pointer to session attrs of flash ddb entry
7541 * @fnode_conn: pointer to connection attrs of flash ddb entry
7542 *
7543 * This logs in to the specified target
7544 **/
7545static int qla4xxx_sysfs_ddb_login(struct iscsi_bus_flash_session *fnode_sess,
7546                                   struct iscsi_bus_flash_conn *fnode_conn)
7547{
7548        struct Scsi_Host *shost = iscsi_flash_session_to_shost(fnode_sess);
7549        struct scsi_qla_host *ha = to_qla_host(shost);
7550        struct dev_db_entry *fw_ddb_entry = NULL;
7551        dma_addr_t fw_ddb_entry_dma;
7552        uint32_t options = 0;
7553        int ret = 0;
7554
7555        if (fnode_sess->flash_state == DEV_DB_NON_PERSISTENT) {
7556                ql4_printk(KERN_ERR, ha,
7557                           "%s: Target info is not persistent\n", __func__);
7558                ret = -EIO;
7559                goto exit_ddb_login;
7560        }
7561
7562        fw_ddb_entry = dma_alloc_coherent(&ha->pdev->dev, sizeof(*fw_ddb_entry),
7563                                          &fw_ddb_entry_dma, GFP_KERNEL);
7564        if (!fw_ddb_entry) {
7565                DEBUG2(ql4_printk(KERN_ERR, ha,
7566                                  "%s: Unable to allocate dma buffer\n",
7567                                  __func__));
7568                ret = -ENOMEM;
7569                goto exit_ddb_login;
7570        }
7571
7572        if (!strncasecmp(fnode_sess->portal_type, PORTAL_TYPE_IPV6, 4))
7573                options |= IPV6_DEFAULT_DDB_ENTRY;
7574
7575        ret = qla4xxx_get_default_ddb(ha, options, fw_ddb_entry_dma);
7576        if (ret == QLA_ERROR)
7577                goto exit_ddb_login;
7578
7579        qla4xxx_copy_to_fwddb_param(fnode_sess, fnode_conn, fw_ddb_entry);
7580        fw_ddb_entry->cookie = DDB_VALID_COOKIE;
7581
7582        if (strlen((char *)fw_ddb_entry->iscsi_name) == 0)
7583                ret = qla4xxx_ddb_login_st(ha, fw_ddb_entry,
7584                                           fnode_sess->target_id);
7585        else
7586                ret = qla4xxx_ddb_login_nt(ha, fw_ddb_entry,
7587                                           fnode_sess->target_id);
7588
7589        if (ret > 0)
7590                ret = -EIO;
7591
7592exit_ddb_login:
7593        if (fw_ddb_entry)
7594                dma_free_coherent(&ha->pdev->dev, sizeof(*fw_ddb_entry),
7595                                  fw_ddb_entry, fw_ddb_entry_dma);
7596        return ret;
7597}
7598
7599/**
7600 * qla4xxx_sysfs_ddb_logout_sid - Logout session for the specified target
7601 * @cls_sess: pointer to session to be logged out
7602 *
7603 * This performs session log out from the specified target
7604 **/
7605static int qla4xxx_sysfs_ddb_logout_sid(struct iscsi_cls_session *cls_sess)
7606{
7607        struct iscsi_session *sess;
7608        struct ddb_entry *ddb_entry = NULL;
7609        struct scsi_qla_host *ha;
7610        struct dev_db_entry *fw_ddb_entry = NULL;
7611        dma_addr_t fw_ddb_entry_dma;
7612        unsigned long flags;
7613        unsigned long wtime;
7614        uint32_t ddb_state;
7615        int options;
7616        int ret = 0;
7617
7618        sess = cls_sess->dd_data;
7619        ddb_entry = sess->dd_data;
7620        ha = ddb_entry->ha;
7621
7622        if (ddb_entry->ddb_type != FLASH_DDB) {
7623                ql4_printk(KERN_ERR, ha, "%s: Not a flash node session\n",
7624                           __func__);
7625                ret = -ENXIO;
7626                goto exit_ddb_logout;
7627        }
7628
7629        if (test_bit(DF_BOOT_TGT, &ddb_entry->flags)) {
7630                ql4_printk(KERN_ERR, ha,
7631                           "%s: Logout from boot target entry is not permitted.\n",
7632                           __func__);
7633                ret = -EPERM;
7634                goto exit_ddb_logout;
7635        }
7636
7637        fw_ddb_entry = dma_alloc_coherent(&ha->pdev->dev, sizeof(*fw_ddb_entry),
7638                                          &fw_ddb_entry_dma, GFP_KERNEL);
7639        if (!fw_ddb_entry) {
7640                ql4_printk(KERN_ERR, ha,
7641                           "%s: Unable to allocate dma buffer\n", __func__);
7642                ret = -ENOMEM;
7643                goto exit_ddb_logout;
7644        }
7645
7646        if (test_and_set_bit(DF_DISABLE_RELOGIN, &ddb_entry->flags))
7647                goto ddb_logout_init;
7648
7649        ret = qla4xxx_get_fwddb_entry(ha, ddb_entry->fw_ddb_index,
7650                                      fw_ddb_entry, fw_ddb_entry_dma,
7651                                      NULL, NULL, &ddb_state, NULL,
7652                                      NULL, NULL);
7653        if (ret == QLA_ERROR)
7654                goto ddb_logout_init;
7655
7656        if (ddb_state == DDB_DS_SESSION_ACTIVE)
7657                goto ddb_logout_init;
7658
7659        /* wait until next relogin is triggered using DF_RELOGIN and
7660         * clear DF_RELOGIN to avoid invocation of further relogin
7661         */
7662        wtime = jiffies + (HZ * RELOGIN_TOV);
7663        do {
7664                if (test_and_clear_bit(DF_RELOGIN, &ddb_entry->flags))
7665                        goto ddb_logout_init;
7666
7667                schedule_timeout_uninterruptible(HZ);
7668        } while ((time_after(wtime, jiffies)));
7669
7670ddb_logout_init:
7671        atomic_set(&ddb_entry->retry_relogin_timer, INVALID_ENTRY);
7672        atomic_set(&ddb_entry->relogin_timer, 0);
7673
7674        options = LOGOUT_OPTION_CLOSE_SESSION;
7675        qla4xxx_session_logout_ddb(ha, ddb_entry, options);
7676
7677        memset(fw_ddb_entry, 0, sizeof(*fw_ddb_entry));
7678        wtime = jiffies + (HZ * LOGOUT_TOV);
7679        do {
7680                ret = qla4xxx_get_fwddb_entry(ha, ddb_entry->fw_ddb_index,
7681                                              fw_ddb_entry, fw_ddb_entry_dma,
7682                                              NULL, NULL, &ddb_state, NULL,
7683                                              NULL, NULL);
7684                if (ret == QLA_ERROR)
7685                        goto ddb_logout_clr_sess;
7686
7687                if ((ddb_state == DDB_DS_NO_CONNECTION_ACTIVE) ||
7688                    (ddb_state == DDB_DS_SESSION_FAILED))
7689                        goto ddb_logout_clr_sess;
7690
7691                schedule_timeout_uninterruptible(HZ);
7692        } while ((time_after(wtime, jiffies)));
7693
7694ddb_logout_clr_sess:
7695        qla4xxx_clear_ddb_entry(ha, ddb_entry->fw_ddb_index);
7696        /*
7697         * we have decremented the reference count of the driver
7698         * when we setup the session to have the driver unload
7699         * to be seamless without actually destroying the
7700         * session
7701         **/
7702        try_module_get(qla4xxx_iscsi_transport.owner);
7703        iscsi_destroy_endpoint(ddb_entry->conn->ep);
7704
7705        spin_lock_irqsave(&ha->hardware_lock, flags);
7706        qla4xxx_free_ddb(ha, ddb_entry);
7707        clear_bit(ddb_entry->fw_ddb_index, ha->ddb_idx_map);
7708        spin_unlock_irqrestore(&ha->hardware_lock, flags);
7709
7710        iscsi_session_teardown(ddb_entry->sess);
7711
7712        clear_bit(DF_DISABLE_RELOGIN, &ddb_entry->flags);
7713        ret = QLA_SUCCESS;
7714
7715exit_ddb_logout:
7716        if (fw_ddb_entry)
7717                dma_free_coherent(&ha->pdev->dev, sizeof(*fw_ddb_entry),
7718                                  fw_ddb_entry, fw_ddb_entry_dma);
7719        return ret;
7720}
7721
7722/**
7723 * qla4xxx_sysfs_ddb_logout - Logout from the specified target
7724 * @fnode_sess: pointer to session attrs of flash ddb entry
7725 * @fnode_conn: pointer to connection attrs of flash ddb entry
7726 *
7727 * This performs log out from the specified target
7728 **/
7729static int qla4xxx_sysfs_ddb_logout(struct iscsi_bus_flash_session *fnode_sess,
7730                                    struct iscsi_bus_flash_conn *fnode_conn)
7731{
7732        struct Scsi_Host *shost = iscsi_flash_session_to_shost(fnode_sess);
7733        struct scsi_qla_host *ha = to_qla_host(shost);
7734        struct ql4_tuple_ddb *flash_tddb = NULL;
7735        struct ql4_tuple_ddb *tmp_tddb = NULL;
7736        struct dev_db_entry *fw_ddb_entry = NULL;
7737        struct ddb_entry *ddb_entry = NULL;
7738        dma_addr_t fw_ddb_dma;
7739        uint32_t next_idx = 0;
7740        uint32_t state = 0, conn_err = 0;
7741        uint16_t conn_id = 0;
7742        int idx, index;
7743        int status, ret = 0;
7744
7745        fw_ddb_entry = dma_pool_alloc(ha->fw_ddb_dma_pool, GFP_KERNEL,
7746                                      &fw_ddb_dma);
7747        if (fw_ddb_entry == NULL) {
7748                ql4_printk(KERN_ERR, ha, "%s:Out of memory\n", __func__);
7749                ret = -ENOMEM;
7750                goto exit_ddb_logout;
7751        }
7752
7753        flash_tddb = vzalloc(sizeof(*flash_tddb));
7754        if (!flash_tddb) {
7755                ql4_printk(KERN_WARNING, ha,
7756                           "%s:Memory Allocation failed.\n", __func__);
7757                ret = -ENOMEM;
7758                goto exit_ddb_logout;
7759        }
7760
7761        tmp_tddb = vzalloc(sizeof(*tmp_tddb));
7762        if (!tmp_tddb) {
7763                ql4_printk(KERN_WARNING, ha,
7764                           "%s:Memory Allocation failed.\n", __func__);
7765                ret = -ENOMEM;
7766                goto exit_ddb_logout;
7767        }
7768
7769        if (!fnode_sess->targetname) {
7770                ql4_printk(KERN_ERR, ha,
7771                           "%s:Cannot logout from SendTarget entry\n",
7772                           __func__);
7773                ret = -EPERM;
7774                goto exit_ddb_logout;
7775        }
7776
7777        if (fnode_sess->is_boot_target) {
7778                ql4_printk(KERN_ERR, ha,
7779                           "%s: Logout from boot target entry is not permitted.\n",
7780                           __func__);
7781                ret = -EPERM;
7782                goto exit_ddb_logout;
7783        }
7784
7785        strlcpy(flash_tddb->iscsi_name, fnode_sess->targetname,
7786                ISCSI_NAME_SIZE);
7787
7788        if (!strncmp(fnode_sess->portal_type, PORTAL_TYPE_IPV6, 4))
7789                sprintf(flash_tddb->ip_addr, "%pI6", fnode_conn->ipaddress);
7790        else
7791                sprintf(flash_tddb->ip_addr, "%pI4", fnode_conn->ipaddress);
7792
7793        flash_tddb->tpgt = fnode_sess->tpgt;
7794        flash_tddb->port = fnode_conn->port;
7795
7796        COPY_ISID(flash_tddb->isid, fnode_sess->isid);
7797
7798        for (idx = 0; idx < MAX_DDB_ENTRIES; idx++) {
7799                ddb_entry = qla4xxx_lookup_ddb_by_fw_index(ha, idx);
7800                if (ddb_entry == NULL)
7801                        continue;
7802
7803                if (ddb_entry->ddb_type != FLASH_DDB)
7804                        continue;
7805
7806                index = ddb_entry->sess->target_id;
7807                status = qla4xxx_get_fwddb_entry(ha, index, fw_ddb_entry,
7808                                                 fw_ddb_dma, NULL, &next_idx,
7809                                                 &state, &conn_err, NULL,
7810                                                 &conn_id);
7811                if (status == QLA_ERROR) {
7812                        ret = -ENOMEM;
7813                        break;
7814                }
7815
7816                qla4xxx_convert_param_ddb(fw_ddb_entry, tmp_tddb, NULL);
7817
7818                status = qla4xxx_compare_tuple_ddb(ha, flash_tddb, tmp_tddb,
7819                                                   true);
7820                if (status == QLA_SUCCESS) {
7821                        ret = qla4xxx_sysfs_ddb_logout_sid(ddb_entry->sess);
7822                        break;
7823                }
7824        }
7825
7826        if (idx == MAX_DDB_ENTRIES)
7827                ret = -ESRCH;
7828
7829exit_ddb_logout:
7830        vfree(flash_tddb);
7831        vfree(tmp_tddb);
7832        if (fw_ddb_entry)
7833                dma_pool_free(ha->fw_ddb_dma_pool, fw_ddb_entry, fw_ddb_dma);
7834
7835        return ret;
7836}
7837
7838static int
7839qla4xxx_sysfs_ddb_get_param(struct iscsi_bus_flash_session *fnode_sess,
7840                            int param, char *buf)
7841{
7842        struct Scsi_Host *shost = iscsi_flash_session_to_shost(fnode_sess);
7843        struct scsi_qla_host *ha = to_qla_host(shost);
7844        struct iscsi_bus_flash_conn *fnode_conn;
7845        struct ql4_chap_table chap_tbl;
7846        struct device *dev;
7847        int parent_type;
7848        int rc = 0;
7849
7850        dev = iscsi_find_flashnode_conn(fnode_sess);
7851        if (!dev)
7852                return -EIO;
7853
7854        fnode_conn = iscsi_dev_to_flash_conn(dev);
7855
7856        switch (param) {
7857        case ISCSI_FLASHNODE_IS_FW_ASSIGNED_IPV6:
7858                rc = sprintf(buf, "%u\n", fnode_conn->is_fw_assigned_ipv6);
7859                break;
7860        case ISCSI_FLASHNODE_PORTAL_TYPE:
7861                rc = sprintf(buf, "%s\n", fnode_sess->portal_type);
7862                break;
7863        case ISCSI_FLASHNODE_AUTO_SND_TGT_DISABLE:
7864                rc = sprintf(buf, "%u\n", fnode_sess->auto_snd_tgt_disable);
7865                break;
7866        case ISCSI_FLASHNODE_DISCOVERY_SESS:
7867                rc = sprintf(buf, "%u\n", fnode_sess->discovery_sess);
7868                break;
7869        case ISCSI_FLASHNODE_ENTRY_EN:
7870                rc = sprintf(buf, "%u\n", fnode_sess->entry_state);
7871                break;
7872        case ISCSI_FLASHNODE_HDR_DGST_EN:
7873                rc = sprintf(buf, "%u\n", fnode_conn->hdrdgst_en);
7874                break;
7875        case ISCSI_FLASHNODE_DATA_DGST_EN:
7876                rc = sprintf(buf, "%u\n", fnode_conn->datadgst_en);
7877                break;
7878        case ISCSI_FLASHNODE_IMM_DATA_EN:
7879                rc = sprintf(buf, "%u\n", fnode_sess->imm_data_en);
7880                break;
7881        case ISCSI_FLASHNODE_INITIAL_R2T_EN:
7882                rc = sprintf(buf, "%u\n", fnode_sess->initial_r2t_en);
7883                break;
7884        case ISCSI_FLASHNODE_DATASEQ_INORDER:
7885                rc = sprintf(buf, "%u\n", fnode_sess->dataseq_inorder_en);
7886                break;
7887        case ISCSI_FLASHNODE_PDU_INORDER:
7888                rc = sprintf(buf, "%u\n", fnode_sess->pdu_inorder_en);
7889                break;
7890        case ISCSI_FLASHNODE_CHAP_AUTH_EN:
7891                rc = sprintf(buf, "%u\n", fnode_sess->chap_auth_en);
7892                break;
7893        case ISCSI_FLASHNODE_SNACK_REQ_EN:
7894                rc = sprintf(buf, "%u\n", fnode_conn->snack_req_en);
7895                break;
7896        case ISCSI_FLASHNODE_DISCOVERY_LOGOUT_EN:
7897                rc = sprintf(buf, "%u\n", fnode_sess->discovery_logout_en);
7898                break;
7899        case ISCSI_FLASHNODE_BIDI_CHAP_EN:
7900                rc = sprintf(buf, "%u\n", fnode_sess->bidi_chap_en);
7901                break;
7902        case ISCSI_FLASHNODE_DISCOVERY_AUTH_OPTIONAL:
7903                rc = sprintf(buf, "%u\n", fnode_sess->discovery_auth_optional);
7904                break;
7905        case ISCSI_FLASHNODE_ERL:
7906                rc = sprintf(buf, "%u\n", fnode_sess->erl);
7907                break;
7908        case ISCSI_FLASHNODE_TCP_TIMESTAMP_STAT:
7909                rc = sprintf(buf, "%u\n", fnode_conn->tcp_timestamp_stat);
7910                break;
7911        case ISCSI_FLASHNODE_TCP_NAGLE_DISABLE:
7912                rc = sprintf(buf, "%u\n", fnode_conn->tcp_nagle_disable);
7913                break;
7914        case ISCSI_FLASHNODE_TCP_WSF_DISABLE:
7915                rc = sprintf(buf, "%u\n", fnode_conn->tcp_wsf_disable);
7916                break;
7917        case ISCSI_FLASHNODE_TCP_TIMER_SCALE:
7918                rc = sprintf(buf, "%u\n", fnode_conn->tcp_timer_scale);
7919                break;
7920        case ISCSI_FLASHNODE_TCP_TIMESTAMP_EN:
7921                rc = sprintf(buf, "%u\n", fnode_conn->tcp_timestamp_en);
7922                break;
7923        case ISCSI_FLASHNODE_IP_FRAG_DISABLE:
7924                rc = sprintf(buf, "%u\n", fnode_conn->fragment_disable);
7925                break;
7926        case ISCSI_FLASHNODE_MAX_RECV_DLENGTH:
7927                rc = sprintf(buf, "%u\n", fnode_conn->max_recv_dlength);
7928                break;
7929        case ISCSI_FLASHNODE_MAX_XMIT_DLENGTH:
7930                rc = sprintf(buf, "%u\n", fnode_conn->max_xmit_dlength);
7931                break;
7932        case ISCSI_FLASHNODE_FIRST_BURST:
7933                rc = sprintf(buf, "%u\n", fnode_sess->first_burst);
7934                break;
7935        case ISCSI_FLASHNODE_DEF_TIME2WAIT:
7936                rc = sprintf(buf, "%u\n", fnode_sess->time2wait);
7937                break;
7938        case ISCSI_FLASHNODE_DEF_TIME2RETAIN:
7939                rc = sprintf(buf, "%u\n", fnode_sess->time2retain);
7940                break;
7941        case ISCSI_FLASHNODE_MAX_R2T:
7942                rc = sprintf(buf, "%u\n", fnode_sess->max_r2t);
7943                break;
7944        case ISCSI_FLASHNODE_KEEPALIVE_TMO:
7945                rc = sprintf(buf, "%u\n", fnode_conn->keepalive_timeout);
7946                break;
7947        case ISCSI_FLASHNODE_ISID:
7948                rc = sprintf(buf, "%pm\n", fnode_sess->isid);
7949                break;
7950        case ISCSI_FLASHNODE_TSID:
7951                rc = sprintf(buf, "%u\n", fnode_sess->tsid);
7952                break;
7953        case ISCSI_FLASHNODE_PORT:
7954                rc = sprintf(buf, "%d\n", fnode_conn->port);
7955                break;
7956        case ISCSI_FLASHNODE_MAX_BURST:
7957                rc = sprintf(buf, "%u\n", fnode_sess->max_burst);
7958                break;
7959        case ISCSI_FLASHNODE_DEF_TASKMGMT_TMO:
7960                rc = sprintf(buf, "%u\n",
7961                             fnode_sess->default_taskmgmt_timeout);
7962                break;
7963        case ISCSI_FLASHNODE_IPADDR:
7964                if (!strncmp(fnode_sess->portal_type, PORTAL_TYPE_IPV6, 4))
7965                        rc = sprintf(buf, "%pI6\n", fnode_conn->ipaddress);
7966                else
7967                        rc = sprintf(buf, "%pI4\n", fnode_conn->ipaddress);
7968                break;
7969        case ISCSI_FLASHNODE_ALIAS:
7970                if (fnode_sess->targetalias)
7971                        rc = sprintf(buf, "%s\n", fnode_sess->targetalias);
7972                else
7973                        rc = sprintf(buf, "\n");
7974                break;
7975        case ISCSI_FLASHNODE_REDIRECT_IPADDR:
7976                if (!strncmp(fnode_sess->portal_type, PORTAL_TYPE_IPV6, 4))
7977                        rc = sprintf(buf, "%pI6\n",
7978                                     fnode_conn->redirect_ipaddr);
7979                else
7980                        rc = sprintf(buf, "%pI4\n",
7981                                     fnode_conn->redirect_ipaddr);
7982                break;
7983        case ISCSI_FLASHNODE_MAX_SEGMENT_SIZE:
7984                rc = sprintf(buf, "%u\n", fnode_conn->max_segment_size);
7985                break;
7986        case ISCSI_FLASHNODE_LOCAL_PORT:
7987                rc = sprintf(buf, "%u\n", fnode_conn->local_port);
7988                break;
7989        case ISCSI_FLASHNODE_IPV4_TOS:
7990                rc = sprintf(buf, "%u\n", fnode_conn->ipv4_tos);
7991                break;
7992        case ISCSI_FLASHNODE_IPV6_TC:
7993                if (!strncmp(fnode_sess->portal_type, PORTAL_TYPE_IPV6, 4))
7994                        rc = sprintf(buf, "%u\n",
7995                                     fnode_conn->ipv6_traffic_class);
7996                else
7997                        rc = sprintf(buf, "\n");
7998                break;
7999        case ISCSI_FLASHNODE_IPV6_FLOW_LABEL:
8000                rc = sprintf(buf, "%u\n", fnode_conn->ipv6_flow_label);
8001                break;
8002        case ISCSI_FLASHNODE_LINK_LOCAL_IPV6:
8003                if (!strncmp(fnode_sess->portal_type, PORTAL_TYPE_IPV6, 4))
8004                        rc = sprintf(buf, "%pI6\n",
8005                                     fnode_conn->link_local_ipv6_addr);
8006                else
8007                        rc = sprintf(buf, "\n");
8008                break;
8009        case ISCSI_FLASHNODE_DISCOVERY_PARENT_IDX:
8010                rc = sprintf(buf, "%u\n", fnode_sess->discovery_parent_idx);
8011                break;
8012        case ISCSI_FLASHNODE_DISCOVERY_PARENT_TYPE:
8013                if (fnode_sess->discovery_parent_type == DDB_ISNS)
8014                        parent_type = ISCSI_DISC_PARENT_ISNS;
8015                else if (fnode_sess->discovery_parent_type == DDB_NO_LINK)
8016                        parent_type = ISCSI_DISC_PARENT_UNKNOWN;
8017                else if (fnode_sess->discovery_parent_type < MAX_DDB_ENTRIES)
8018                        parent_type = ISCSI_DISC_PARENT_SENDTGT;
8019                else
8020                        parent_type = ISCSI_DISC_PARENT_UNKNOWN;
8021
8022                rc = sprintf(buf, "%s\n",
8023                             iscsi_get_discovery_parent_name(parent_type));
8024                break;
8025        case ISCSI_FLASHNODE_NAME:
8026                if (fnode_sess->targetname)
8027                        rc = sprintf(buf, "%s\n", fnode_sess->targetname);
8028                else
8029                        rc = sprintf(buf, "\n");
8030                break;
8031        case ISCSI_FLASHNODE_TPGT:
8032                rc = sprintf(buf, "%u\n", fnode_sess->tpgt);
8033                break;
8034        case ISCSI_FLASHNODE_TCP_XMIT_WSF:
8035                rc = sprintf(buf, "%u\n", fnode_conn->tcp_xmit_wsf);
8036                break;
8037        case ISCSI_FLASHNODE_TCP_RECV_WSF:
8038                rc = sprintf(buf, "%u\n", fnode_conn->tcp_recv_wsf);
8039                break;
8040        case ISCSI_FLASHNODE_CHAP_OUT_IDX:
8041                rc = sprintf(buf, "%u\n", fnode_sess->chap_out_idx);
8042                break;
8043        case ISCSI_FLASHNODE_USERNAME:
8044                if (fnode_sess->chap_auth_en) {
8045                        qla4xxx_get_uni_chap_at_index(ha,
8046                                                      chap_tbl.name,
8047                                                      chap_tbl.secret,
8048                                                      fnode_sess->chap_out_idx);
8049                        rc = sprintf(buf, "%s\n", chap_tbl.name);
8050                } else {
8051                        rc = sprintf(buf, "\n");
8052                }
8053                break;
8054        case ISCSI_FLASHNODE_PASSWORD:
8055                if (fnode_sess->chap_auth_en) {
8056                        qla4xxx_get_uni_chap_at_index(ha,
8057                                                      chap_tbl.name,
8058                                                      chap_tbl.secret,
8059                                                      fnode_sess->chap_out_idx);
8060                        rc = sprintf(buf, "%s\n", chap_tbl.secret);
8061                } else {
8062                        rc = sprintf(buf, "\n");
8063                }
8064                break;
8065        case ISCSI_FLASHNODE_STATSN:
8066                rc = sprintf(buf, "%u\n", fnode_conn->statsn);
8067                break;
8068        case ISCSI_FLASHNODE_EXP_STATSN:
8069                rc = sprintf(buf, "%u\n", fnode_conn->exp_statsn);
8070                break;
8071        case ISCSI_FLASHNODE_IS_BOOT_TGT:
8072                rc = sprintf(buf, "%u\n", fnode_sess->is_boot_target);
8073                break;
8074        default:
8075                rc = -ENOSYS;
8076                break;
8077        }
8078
8079        put_device(dev);
8080        return rc;
8081}
8082
8083/**
8084 * qla4xxx_sysfs_ddb_set_param - Set parameter for firmware DDB entry
8085 * @fnode_sess: pointer to session attrs of flash ddb entry
8086 * @fnode_conn: pointer to connection attrs of flash ddb entry
8087 * @data: Parameters and their values to update
8088 * @len: len of data
8089 *
8090 * This sets the parameter of flash ddb entry and writes them to flash
8091 **/
8092static int
8093qla4xxx_sysfs_ddb_set_param(struct iscsi_bus_flash_session *fnode_sess,
8094                            struct iscsi_bus_flash_conn *fnode_conn,
8095                            void *data, int len)
8096{
8097        struct Scsi_Host *shost = iscsi_flash_session_to_shost(fnode_sess);
8098        struct scsi_qla_host *ha = to_qla_host(shost);
8099        struct iscsi_flashnode_param_info *fnode_param;
8100        struct ql4_chap_table chap_tbl;
8101        struct nlattr *attr;
8102        uint16_t chap_out_idx = INVALID_ENTRY;
8103        int rc = QLA_ERROR;
8104        uint32_t rem = len;
8105
8106        memset((void *)&chap_tbl, 0, sizeof(chap_tbl));
8107        nla_for_each_attr(attr, data, len, rem) {
8108                fnode_param = nla_data(attr);
8109
8110                switch (fnode_param->param) {
8111                case ISCSI_FLASHNODE_IS_FW_ASSIGNED_IPV6:
8112                        fnode_conn->is_fw_assigned_ipv6 = fnode_param->value[0];
8113                        break;
8114                case ISCSI_FLASHNODE_PORTAL_TYPE:
8115                        memcpy(fnode_sess->portal_type, fnode_param->value,
8116                               strlen(fnode_sess->portal_type));
8117                        break;
8118                case ISCSI_FLASHNODE_AUTO_SND_TGT_DISABLE:
8119                        fnode_sess->auto_snd_tgt_disable =
8120                                                        fnode_param->value[0];
8121                        break;
8122                case ISCSI_FLASHNODE_DISCOVERY_SESS:
8123                        fnode_sess->discovery_sess = fnode_param->value[0];
8124                        break;
8125                case ISCSI_FLASHNODE_ENTRY_EN:
8126                        fnode_sess->entry_state = fnode_param->value[0];
8127                        break;
8128                case ISCSI_FLASHNODE_HDR_DGST_EN:
8129                        fnode_conn->hdrdgst_en = fnode_param->value[0];
8130                        break;
8131                case ISCSI_FLASHNODE_DATA_DGST_EN:
8132                        fnode_conn->datadgst_en = fnode_param->value[0];
8133                        break;
8134                case ISCSI_FLASHNODE_IMM_DATA_EN:
8135                        fnode_sess->imm_data_en = fnode_param->value[0];
8136                        break;
8137                case ISCSI_FLASHNODE_INITIAL_R2T_EN:
8138                        fnode_sess->initial_r2t_en = fnode_param->value[0];
8139                        break;
8140                case ISCSI_FLASHNODE_DATASEQ_INORDER:
8141                        fnode_sess->dataseq_inorder_en = fnode_param->value[0];
8142                        break;
8143                case ISCSI_FLASHNODE_PDU_INORDER:
8144                        fnode_sess->pdu_inorder_en = fnode_param->value[0];
8145                        break;
8146                case ISCSI_FLASHNODE_CHAP_AUTH_EN:
8147                        fnode_sess->chap_auth_en = fnode_param->value[0];
8148                        /* Invalidate chap index if chap auth is disabled */
8149                        if (!fnode_sess->chap_auth_en)
8150                                fnode_sess->chap_out_idx = INVALID_ENTRY;
8151
8152                        break;
8153                case ISCSI_FLASHNODE_SNACK_REQ_EN:
8154                        fnode_conn->snack_req_en = fnode_param->value[0];
8155                        break;
8156                case ISCSI_FLASHNODE_DISCOVERY_LOGOUT_EN:
8157                        fnode_sess->discovery_logout_en = fnode_param->value[0];
8158                        break;
8159                case ISCSI_FLASHNODE_BIDI_CHAP_EN:
8160                        fnode_sess->bidi_chap_en = fnode_param->value[0];
8161                        break;
8162                case ISCSI_FLASHNODE_DISCOVERY_AUTH_OPTIONAL:
8163                        fnode_sess->discovery_auth_optional =
8164                                                        fnode_param->value[0];
8165                        break;
8166                case ISCSI_FLASHNODE_ERL:
8167                        fnode_sess->erl = fnode_param->value[0];
8168                        break;
8169                case ISCSI_FLASHNODE_TCP_TIMESTAMP_STAT:
8170                        fnode_conn->tcp_timestamp_stat = fnode_param->value[0];
8171                        break;
8172                case ISCSI_FLASHNODE_TCP_NAGLE_DISABLE:
8173                        fnode_conn->tcp_nagle_disable = fnode_param->value[0];
8174                        break;
8175                case ISCSI_FLASHNODE_TCP_WSF_DISABLE:
8176                        fnode_conn->tcp_wsf_disable = fnode_param->value[0];
8177                        break;
8178                case ISCSI_FLASHNODE_TCP_TIMER_SCALE:
8179                        fnode_conn->tcp_timer_scale = fnode_param->value[0];
8180                        break;
8181                case ISCSI_FLASHNODE_TCP_TIMESTAMP_EN:
8182                        fnode_conn->tcp_timestamp_en = fnode_param->value[0];
8183                        break;
8184                case ISCSI_FLASHNODE_IP_FRAG_DISABLE:
8185                        fnode_conn->fragment_disable = fnode_param->value[0];
8186                        break;
8187                case ISCSI_FLASHNODE_MAX_RECV_DLENGTH:
8188                        fnode_conn->max_recv_dlength =
8189                                        *(unsigned *)fnode_param->value;
8190                        break;
8191                case ISCSI_FLASHNODE_MAX_XMIT_DLENGTH:
8192                        fnode_conn->max_xmit_dlength =
8193                                        *(unsigned *)fnode_param->value;
8194                        break;
8195                case ISCSI_FLASHNODE_FIRST_BURST:
8196                        fnode_sess->first_burst =
8197                                        *(unsigned *)fnode_param->value;
8198                        break;
8199                case ISCSI_FLASHNODE_DEF_TIME2WAIT:
8200                        fnode_sess->time2wait = *(uint16_t *)fnode_param->value;
8201                        break;
8202                case ISCSI_FLASHNODE_DEF_TIME2RETAIN:
8203                        fnode_sess->time2retain =
8204                                                *(uint16_t *)fnode_param->value;
8205                        break;
8206                case ISCSI_FLASHNODE_MAX_R2T:
8207                        fnode_sess->max_r2t =
8208                                        *(uint16_t *)fnode_param->value;
8209                        break;
8210                case ISCSI_FLASHNODE_KEEPALIVE_TMO:
8211                        fnode_conn->keepalive_timeout =
8212                                *(uint16_t *)fnode_param->value;
8213                        break;
8214                case ISCSI_FLASHNODE_ISID:
8215                        memcpy(fnode_sess->isid, fnode_param->value,
8216                               sizeof(fnode_sess->isid));
8217                        break;
8218                case ISCSI_FLASHNODE_TSID:
8219                        fnode_sess->tsid = *(uint16_t *)fnode_param->value;
8220                        break;
8221                case ISCSI_FLASHNODE_PORT:
8222                        fnode_conn->port = *(uint16_t *)fnode_param->value;
8223                        break;
8224                case ISCSI_FLASHNODE_MAX_BURST:
8225                        fnode_sess->max_burst = *(unsigned *)fnode_param->value;
8226                        break;
8227                case ISCSI_FLASHNODE_DEF_TASKMGMT_TMO:
8228                        fnode_sess->default_taskmgmt_timeout =
8229                                                *(uint16_t *)fnode_param->value;
8230                        break;
8231                case ISCSI_FLASHNODE_IPADDR:
8232                        memcpy(fnode_conn->ipaddress, fnode_param->value,
8233                               IPv6_ADDR_LEN);
8234                        break;
8235                case ISCSI_FLASHNODE_ALIAS:
8236                        rc = iscsi_switch_str_param(&fnode_sess->targetalias,
8237                                                    (char *)fnode_param->value);
8238                        break;
8239                case ISCSI_FLASHNODE_REDIRECT_IPADDR:
8240                        memcpy(fnode_conn->redirect_ipaddr, fnode_param->value,
8241                               IPv6_ADDR_LEN);
8242                        break;
8243                case ISCSI_FLASHNODE_MAX_SEGMENT_SIZE:
8244                        fnode_conn->max_segment_size =
8245                                        *(unsigned *)fnode_param->value;
8246                        break;
8247                case ISCSI_FLASHNODE_LOCAL_PORT:
8248                        fnode_conn->local_port =
8249                                                *(uint16_t *)fnode_param->value;
8250                        break;
8251                case ISCSI_FLASHNODE_IPV4_TOS:
8252                        fnode_conn->ipv4_tos = fnode_param->value[0];
8253                        break;
8254                case ISCSI_FLASHNODE_IPV6_TC:
8255                        fnode_conn->ipv6_traffic_class = fnode_param->value[0];
8256                        break;
8257                case ISCSI_FLASHNODE_IPV6_FLOW_LABEL:
8258                        fnode_conn->ipv6_flow_label = fnode_param->value[0];
8259                        break;
8260                case ISCSI_FLASHNODE_NAME:
8261                        rc = iscsi_switch_str_param(&fnode_sess->targetname,
8262                                                    (char *)fnode_param->value);
8263                        break;
8264                case ISCSI_FLASHNODE_TPGT:
8265                        fnode_sess->tpgt = *(uint16_t *)fnode_param->value;
8266                        break;
8267                case ISCSI_FLASHNODE_LINK_LOCAL_IPV6:
8268                        memcpy(fnode_conn->link_local_ipv6_addr,
8269                               fnode_param->value, IPv6_ADDR_LEN);
8270                        break;
8271                case ISCSI_FLASHNODE_DISCOVERY_PARENT_IDX:
8272                        fnode_sess->discovery_parent_idx =
8273                                                *(uint16_t *)fnode_param->value;
8274                        break;
8275                case ISCSI_FLASHNODE_TCP_XMIT_WSF:
8276                        fnode_conn->tcp_xmit_wsf =
8277                                                *(uint8_t *)fnode_param->value;
8278                        break;
8279                case ISCSI_FLASHNODE_TCP_RECV_WSF:
8280                        fnode_conn->tcp_recv_wsf =
8281                                                *(uint8_t *)fnode_param->value;
8282                        break;
8283                case ISCSI_FLASHNODE_STATSN:
8284                        fnode_conn->statsn = *(uint32_t *)fnode_param->value;
8285                        break;
8286                case ISCSI_FLASHNODE_EXP_STATSN:
8287                        fnode_conn->exp_statsn =
8288                                                *(uint32_t *)fnode_param->value;
8289                        break;
8290                case ISCSI_FLASHNODE_CHAP_OUT_IDX:
8291                        chap_out_idx = *(uint16_t *)fnode_param->value;
8292                        if (!qla4xxx_get_uni_chap_at_index(ha,
8293                                                           chap_tbl.name,
8294                                                           chap_tbl.secret,
8295                                                           chap_out_idx)) {
8296                                fnode_sess->chap_out_idx = chap_out_idx;
8297                                /* Enable chap auth if chap index is valid */
8298                                fnode_sess->chap_auth_en = QL4_PARAM_ENABLE;
8299                        }
8300                        break;
8301                default:
8302                        ql4_printk(KERN_ERR, ha,
8303                                   "%s: No such sysfs attribute\n", __func__);
8304                        rc = -ENOSYS;
8305                        goto exit_set_param;
8306                }
8307        }
8308
8309        rc = qla4xxx_sysfs_ddb_apply(fnode_sess, fnode_conn);
8310
8311exit_set_param:
8312        return rc;
8313}
8314
8315/**
8316 * qla4xxx_sysfs_ddb_delete - Delete firmware DDB entry
8317 * @fnode_sess: pointer to session attrs of flash ddb entry
8318 *
8319 * This invalidates the flash ddb entry at the given index
8320 **/
8321static int qla4xxx_sysfs_ddb_delete(struct iscsi_bus_flash_session *fnode_sess)
8322{
8323        struct Scsi_Host *shost = iscsi_flash_session_to_shost(fnode_sess);
8324        struct scsi_qla_host *ha = to_qla_host(shost);
8325        uint32_t dev_db_start_offset;
8326        uint32_t dev_db_end_offset;
8327        struct dev_db_entry *fw_ddb_entry = NULL;
8328        dma_addr_t fw_ddb_entry_dma;
8329        uint16_t *ddb_cookie = NULL;
8330        size_t ddb_size = 0;
8331        void *pddb = NULL;
8332        int target_id;
8333        int rc = 0;
8334
8335        if (fnode_sess->is_boot_target) {
8336                rc = -EPERM;
8337                DEBUG2(ql4_printk(KERN_ERR, ha,
8338                                  "%s: Deletion of boot target entry is not permitted.\n",
8339                                  __func__));
8340                goto exit_ddb_del;
8341        }
8342
8343        if (fnode_sess->flash_state == DEV_DB_NON_PERSISTENT)
8344                goto sysfs_ddb_del;
8345
8346        if (is_qla40XX(ha)) {
8347                dev_db_start_offset = FLASH_OFFSET_DB_INFO;
8348                dev_db_end_offset = FLASH_OFFSET_DB_END;
8349                dev_db_start_offset += (fnode_sess->target_id *
8350                                       sizeof(*fw_ddb_entry));
8351                ddb_size = sizeof(*fw_ddb_entry);
8352        } else {
8353                dev_db_start_offset = FLASH_RAW_ACCESS_ADDR +
8354                                      (ha->hw.flt_region_ddb << 2);
8355                /* flt_ddb_size is DDB table size for both ports
8356                 * so divide it by 2 to calculate the offset for second port
8357                 */
8358                if (ha->port_num == 1)
8359                        dev_db_start_offset += (ha->hw.flt_ddb_size / 2);
8360
8361                dev_db_end_offset = dev_db_start_offset +
8362                                    (ha->hw.flt_ddb_size / 2);
8363
8364                dev_db_start_offset += (fnode_sess->target_id *
8365                                       sizeof(*fw_ddb_entry));
8366                dev_db_start_offset += offsetof(struct dev_db_entry, cookie);
8367
8368                ddb_size = sizeof(*ddb_cookie);
8369        }
8370
8371        DEBUG2(ql4_printk(KERN_ERR, ha, "%s: start offset=%u, end offset=%u\n",
8372                          __func__, dev_db_start_offset, dev_db_end_offset));
8373
8374        if (dev_db_start_offset > dev_db_end_offset) {
8375                rc = -EIO;
8376                DEBUG2(ql4_printk(KERN_ERR, ha, "%s:Invalid DDB index %u\n",
8377                                  __func__, fnode_sess->target_id));
8378                goto exit_ddb_del;
8379        }
8380
8381        pddb = dma_alloc_coherent(&ha->pdev->dev, ddb_size,
8382                                  &fw_ddb_entry_dma, GFP_KERNEL);
8383        if (!pddb) {
8384                rc = -ENOMEM;
8385                DEBUG2(ql4_printk(KERN_ERR, ha,
8386                                  "%s: Unable to allocate dma buffer\n",
8387                                  __func__));
8388                goto exit_ddb_del;
8389        }
8390
8391        if (is_qla40XX(ha)) {
8392                fw_ddb_entry = pddb;
8393                memset(fw_ddb_entry, 0, ddb_size);
8394                ddb_cookie = &fw_ddb_entry->cookie;
8395        } else {
8396                ddb_cookie = pddb;
8397        }
8398
8399        /* invalidate the cookie */
8400        *ddb_cookie = 0xFFEE;
8401        qla4xxx_set_flash(ha, fw_ddb_entry_dma, dev_db_start_offset,
8402                          ddb_size, FLASH_OPT_RMW_COMMIT);
8403
8404sysfs_ddb_del:
8405        target_id = fnode_sess->target_id;
8406        iscsi_destroy_flashnode_sess(fnode_sess);
8407        ql4_printk(KERN_INFO, ha,
8408                   "%s: session and conn entries for flashnode %u of host %lu deleted\n",
8409                   __func__, target_id, ha->host_no);
8410exit_ddb_del:
8411        if (pddb)
8412                dma_free_coherent(&ha->pdev->dev, ddb_size, pddb,
8413                                  fw_ddb_entry_dma);
8414        return rc;
8415}
8416
8417/**
8418 * qla4xxx_sysfs_ddb_export - Create sysfs entries for firmware DDBs
8419 * @ha: pointer to adapter structure
8420 *
8421 * Export the firmware DDB for all send targets and normal targets to sysfs.
8422 **/
8423int qla4xxx_sysfs_ddb_export(struct scsi_qla_host *ha)
8424{
8425        struct dev_db_entry *fw_ddb_entry = NULL;
8426        dma_addr_t fw_ddb_entry_dma;
8427        uint16_t max_ddbs;
8428        uint16_t idx = 0;
8429        int ret = QLA_SUCCESS;
8430
8431        fw_ddb_entry = dma_alloc_coherent(&ha->pdev->dev,
8432                                          sizeof(*fw_ddb_entry),
8433                                          &fw_ddb_entry_dma, GFP_KERNEL);
8434        if (!fw_ddb_entry) {
8435                DEBUG2(ql4_printk(KERN_ERR, ha,
8436                                  "%s: Unable to allocate dma buffer\n",
8437                                  __func__));
8438                return -ENOMEM;
8439        }
8440
8441        max_ddbs =  is_qla40XX(ha) ? MAX_PRST_DEV_DB_ENTRIES :
8442                                     MAX_DEV_DB_ENTRIES;
8443
8444        for (idx = 0; idx < max_ddbs; idx++) {
8445                if (qla4xxx_flashdb_by_index(ha, fw_ddb_entry, fw_ddb_entry_dma,
8446                                             idx))
8447                        continue;
8448
8449                ret = qla4xxx_sysfs_ddb_tgt_create(ha, fw_ddb_entry, &idx, 0);
8450                if (ret) {
8451                        ret = -EIO;
8452                        break;
8453                }
8454        }
8455
8456        dma_free_coherent(&ha->pdev->dev, sizeof(*fw_ddb_entry), fw_ddb_entry,
8457                          fw_ddb_entry_dma);
8458
8459        return ret;
8460}
8461
8462static void qla4xxx_sysfs_ddb_remove(struct scsi_qla_host *ha)
8463{
8464        iscsi_destroy_all_flashnode(ha->host);
8465}
8466
8467/**
8468 * qla4xxx_build_ddb_list - Build ddb list and setup sessions
8469 * @ha: pointer to adapter structure
8470 * @is_reset: Is this init path or reset path
8471 *
8472 * Create a list of sendtargets (st) from firmware DDBs, issue send targets
8473 * using connection open, then create the list of normal targets (nt)
8474 * from firmware DDBs. Based on the list of nt setup session and connection
8475 * objects.
8476 **/
8477void qla4xxx_build_ddb_list(struct scsi_qla_host *ha, int is_reset)
8478{
8479        uint16_t tmo = 0;
8480        struct list_head list_st, list_nt;
8481        struct qla_ddb_index  *st_ddb_idx, *st_ddb_idx_tmp;
8482        unsigned long wtime;
8483
8484        if (!test_bit(AF_LINK_UP, &ha->flags)) {
8485                set_bit(AF_BUILD_DDB_LIST, &ha->flags);
8486                ha->is_reset = is_reset;
8487                return;
8488        }
8489
8490        INIT_LIST_HEAD(&list_st);
8491        INIT_LIST_HEAD(&list_nt);
8492
8493        qla4xxx_build_st_list(ha, &list_st);
8494
8495        /* Before issuing conn open mbox, ensure all IPs states are configured
8496         * Note, conn open fails if IPs are not configured
8497         */
8498        qla4xxx_wait_for_ip_configuration(ha);
8499
8500        /* Go thru the STs and fire the sendtargets by issuing conn open mbx */
8501        list_for_each_entry_safe(st_ddb_idx, st_ddb_idx_tmp, &list_st, list) {
8502                qla4xxx_conn_open(ha, st_ddb_idx->fw_ddb_idx);
8503        }
8504
8505        /* Wait to ensure all sendtargets are done for min 12 sec wait */
8506        tmo = ((ha->def_timeout > LOGIN_TOV) &&
8507               (ha->def_timeout < LOGIN_TOV * 10) ?
8508               ha->def_timeout : LOGIN_TOV);
8509
8510        DEBUG2(ql4_printk(KERN_INFO, ha,
8511                          "Default time to wait for build ddb %d\n", tmo));
8512
8513        wtime = jiffies + (HZ * tmo);
8514        do {
8515                if (list_empty(&list_st))
8516                        break;
8517
8518                qla4xxx_remove_failed_ddb(ha, &list_st);
8519                schedule_timeout_uninterruptible(HZ / 10);
8520        } while (time_after(wtime, jiffies));
8521
8522
8523        qla4xxx_build_nt_list(ha, &list_nt, &list_st, is_reset);
8524
8525        qla4xxx_free_ddb_list(&list_st);
8526        qla4xxx_free_ddb_list(&list_nt);
8527
8528        qla4xxx_free_ddb_index(ha);
8529}
8530
8531/**
8532 * qla4xxx_wait_login_resp_boot_tgt -  Wait for iSCSI boot target login
8533 * response.
8534 * @ha: pointer to adapter structure
8535 *
8536 * When the boot entry is normal iSCSI target then DF_BOOT_TGT flag will be
8537 * set in DDB and we will wait for login response of boot targets during
8538 * probe.
8539 **/
8540static void qla4xxx_wait_login_resp_boot_tgt(struct scsi_qla_host *ha)
8541{
8542        struct ddb_entry *ddb_entry;
8543        struct dev_db_entry *fw_ddb_entry = NULL;
8544        dma_addr_t fw_ddb_entry_dma;
8545        unsigned long wtime;
8546        uint32_t ddb_state;
8547        int max_ddbs, idx, ret;
8548
8549        max_ddbs =  is_qla40XX(ha) ? MAX_DEV_DB_ENTRIES_40XX :
8550                                     MAX_DEV_DB_ENTRIES;
8551
8552        fw_ddb_entry = dma_alloc_coherent(&ha->pdev->dev, sizeof(*fw_ddb_entry),
8553                                          &fw_ddb_entry_dma, GFP_KERNEL);
8554        if (!fw_ddb_entry) {
8555                ql4_printk(KERN_ERR, ha,
8556                           "%s: Unable to allocate dma buffer\n", __func__);
8557                goto exit_login_resp;
8558        }
8559
8560        wtime = jiffies + (HZ * BOOT_LOGIN_RESP_TOV);
8561
8562        for (idx = 0; idx < max_ddbs; idx++) {
8563                ddb_entry = qla4xxx_lookup_ddb_by_fw_index(ha, idx);
8564                if (ddb_entry == NULL)
8565                        continue;
8566
8567                if (test_bit(DF_BOOT_TGT, &ddb_entry->flags)) {
8568                        DEBUG2(ql4_printk(KERN_INFO, ha,
8569                                          "%s: DDB index [%d]\n", __func__,
8570                                          ddb_entry->fw_ddb_index));
8571                        do {
8572                                ret = qla4xxx_get_fwddb_entry(ha,
8573                                                ddb_entry->fw_ddb_index,
8574                                                fw_ddb_entry, fw_ddb_entry_dma,
8575                                                NULL, NULL, &ddb_state, NULL,
8576                                                NULL, NULL);
8577                                if (ret == QLA_ERROR)
8578                                        goto exit_login_resp;
8579
8580                                if ((ddb_state == DDB_DS_SESSION_ACTIVE) ||
8581                                    (ddb_state == DDB_DS_SESSION_FAILED))
8582                                        break;
8583
8584                                schedule_timeout_uninterruptible(HZ);
8585
8586                        } while ((time_after(wtime, jiffies)));
8587
8588                        if (!time_after(wtime, jiffies)) {
8589                                DEBUG2(ql4_printk(KERN_INFO, ha,
8590                                                  "%s: Login response wait timer expired\n",
8591                                                  __func__));
8592                                 goto exit_login_resp;
8593                        }
8594                }
8595        }
8596
8597exit_login_resp:
8598        if (fw_ddb_entry)
8599                dma_free_coherent(&ha->pdev->dev, sizeof(*fw_ddb_entry),
8600                                  fw_ddb_entry, fw_ddb_entry_dma);
8601}
8602
8603/**
8604 * qla4xxx_probe_adapter - callback function to probe HBA
8605 * @pdev: pointer to pci_dev structure
8606 * @ent: pointer to pci_device entry
8607 *
8608 * This routine will probe for Qlogic 4xxx iSCSI host adapters.
8609 * It returns zero if successful. It also initializes all data necessary for
8610 * the driver.
8611 **/
8612static int qla4xxx_probe_adapter(struct pci_dev *pdev,
8613                                 const struct pci_device_id *ent)
8614{
8615        int ret = -ENODEV, status;
8616        struct Scsi_Host *host;
8617        struct scsi_qla_host *ha;
8618        uint8_t init_retry_count = 0;
8619        char buf[34];
8620        struct qla4_8xxx_legacy_intr_set *nx_legacy_intr;
8621        uint32_t dev_state;
8622
8623        if (pci_enable_device(pdev))
8624                return -1;
8625
8626        host = iscsi_host_alloc(&qla4xxx_driver_template, sizeof(*ha), 0);
8627        if (host == NULL) {
8628                printk(KERN_WARNING
8629                       "qla4xxx: Couldn't allocate host from scsi layer!\n");
8630                goto probe_disable_device;
8631        }
8632
8633        /* Clear our data area */
8634        ha = to_qla_host(host);
8635        memset(ha, 0, sizeof(*ha));
8636
8637        /* Save the information from PCI BIOS.  */
8638        ha->pdev = pdev;
8639        ha->host = host;
8640        ha->host_no = host->host_no;
8641        ha->func_num = PCI_FUNC(ha->pdev->devfn);
8642
8643        pci_enable_pcie_error_reporting(pdev);
8644
8645        /* Setup Runtime configurable options */
8646        if (is_qla8022(ha)) {
8647                ha->isp_ops = &qla4_82xx_isp_ops;
8648                ha->reg_tbl = (uint32_t *) qla4_82xx_reg_tbl;
8649                ha->qdr_sn_window = -1;
8650                ha->ddr_mn_window = -1;
8651                ha->curr_window = 255;
8652                nx_legacy_intr = &legacy_intr[ha->func_num];
8653                ha->nx_legacy_intr.int_vec_bit = nx_legacy_intr->int_vec_bit;
8654                ha->nx_legacy_intr.tgt_status_reg =
8655                        nx_legacy_intr->tgt_status_reg;
8656                ha->nx_legacy_intr.tgt_mask_reg = nx_legacy_intr->tgt_mask_reg;
8657                ha->nx_legacy_intr.pci_int_reg = nx_legacy_intr->pci_int_reg;
8658        } else if (is_qla8032(ha) || is_qla8042(ha)) {
8659                ha->isp_ops = &qla4_83xx_isp_ops;
8660                ha->reg_tbl = (uint32_t *)qla4_83xx_reg_tbl;
8661        } else {
8662                ha->isp_ops = &qla4xxx_isp_ops;
8663        }
8664
8665        if (is_qla80XX(ha)) {
8666                rwlock_init(&ha->hw_lock);
8667                ha->pf_bit = ha->func_num << 16;
8668                /* Set EEH reset type to fundamental if required by hba */
8669                pdev->needs_freset = 1;
8670        }
8671
8672        /* Configure PCI I/O space. */
8673        ret = ha->isp_ops->iospace_config(ha);
8674        if (ret)
8675                goto probe_failed_ioconfig;
8676
8677        ql4_printk(KERN_INFO, ha, "Found an ISP%04x, irq %d, iobase 0x%p\n",
8678                   pdev->device, pdev->irq, ha->reg);
8679
8680        qla4xxx_config_dma_addressing(ha);
8681
8682        /* Initialize lists and spinlocks. */
8683        INIT_LIST_HEAD(&ha->free_srb_q);
8684
8685        mutex_init(&ha->mbox_sem);
8686        mutex_init(&ha->chap_sem);
8687        init_completion(&ha->mbx_intr_comp);
8688        init_completion(&ha->disable_acb_comp);
8689        init_completion(&ha->idc_comp);
8690        init_completion(&ha->link_up_comp);
8691
8692        spin_lock_init(&ha->hardware_lock);
8693        spin_lock_init(&ha->work_lock);
8694
8695        /* Initialize work list */
8696        INIT_LIST_HEAD(&ha->work_list);
8697
8698        /* Allocate dma buffers */
8699        if (qla4xxx_mem_alloc(ha)) {
8700                ql4_printk(KERN_WARNING, ha,
8701                    "[ERROR] Failed to allocate memory for adapter\n");
8702
8703                ret = -ENOMEM;
8704                goto probe_failed;
8705        }
8706
8707        host->cmd_per_lun = 3;
8708        host->max_channel = 0;
8709        host->max_lun = MAX_LUNS - 1;
8710        host->max_id = MAX_TARGETS;
8711        host->max_cmd_len = IOCB_MAX_CDB_LEN;
8712        host->can_queue = MAX_SRBS ;
8713        host->transportt = qla4xxx_scsi_transport;
8714
8715        pci_set_drvdata(pdev, ha);
8716
8717        ret = scsi_add_host(host, &pdev->dev);
8718        if (ret)
8719                goto probe_failed;
8720
8721        if (is_qla80XX(ha))
8722                qla4_8xxx_get_flash_info(ha);
8723
8724        if (is_qla8032(ha) || is_qla8042(ha)) {
8725                qla4_83xx_read_reset_template(ha);
8726                /*
8727                 * NOTE: If ql4dontresethba==1, set IDC_CTRL DONTRESET_BIT0.
8728                 * If DONRESET_BIT0 is set, drivers should not set dev_state
8729                 * to NEED_RESET. But if NEED_RESET is set, drivers should
8730                 * should honor the reset.
8731                 */
8732                if (ql4xdontresethba == 1)
8733                        qla4_83xx_set_idc_dontreset(ha);
8734        }
8735
8736        /*
8737         * Initialize the Host adapter request/response queues and
8738         * firmware
8739         * NOTE: interrupts enabled upon successful completion
8740         */
8741        status = qla4xxx_initialize_adapter(ha, INIT_ADAPTER);
8742
8743        /* Dont retry adapter initialization if IRQ allocation failed */
8744        if (is_qla80XX(ha) && (status == QLA_ERROR))
8745                goto skip_retry_init;
8746
8747        while ((!test_bit(AF_ONLINE, &ha->flags)) &&
8748            init_retry_count++ < MAX_INIT_RETRIES) {
8749
8750                if (is_qla80XX(ha)) {
8751                        ha->isp_ops->idc_lock(ha);
8752                        dev_state = qla4_8xxx_rd_direct(ha,
8753                                                        QLA8XXX_CRB_DEV_STATE);
8754                        ha->isp_ops->idc_unlock(ha);
8755                        if (dev_state == QLA8XXX_DEV_FAILED) {
8756                                ql4_printk(KERN_WARNING, ha, "%s: don't retry "
8757                                    "initialize adapter. H/W is in failed state\n",
8758                                    __func__);
8759                                break;
8760                        }
8761                }
8762                DEBUG2(printk("scsi: %s: retrying adapter initialization "
8763                              "(%d)\n", __func__, init_retry_count));
8764
8765                if (ha->isp_ops->reset_chip(ha) == QLA_ERROR)
8766                        continue;
8767
8768                status = qla4xxx_initialize_adapter(ha, INIT_ADAPTER);
8769                if (is_qla80XX(ha) && (status == QLA_ERROR)) {
8770                        if (qla4_8xxx_check_init_adapter_retry(ha) == QLA_ERROR)
8771                                goto skip_retry_init;
8772                }
8773        }
8774
8775skip_retry_init:
8776        if (!test_bit(AF_ONLINE, &ha->flags)) {
8777                ql4_printk(KERN_WARNING, ha, "Failed to initialize adapter\n");
8778
8779                if ((is_qla8022(ha) && ql4xdontresethba) ||
8780                    ((is_qla8032(ha) || is_qla8042(ha)) &&
8781                     qla4_83xx_idc_dontreset(ha))) {
8782                        /* Put the device in failed state. */
8783                        DEBUG2(printk(KERN_ERR "HW STATE: FAILED\n"));
8784                        ha->isp_ops->idc_lock(ha);
8785                        qla4_8xxx_wr_direct(ha, QLA8XXX_CRB_DEV_STATE,
8786                                            QLA8XXX_DEV_FAILED);
8787                        ha->isp_ops->idc_unlock(ha);
8788                }
8789                ret = -ENODEV;
8790                goto remove_host;
8791        }
8792
8793        /* Startup the kernel thread for this host adapter. */
8794        DEBUG2(printk("scsi: %s: Starting kernel thread for "
8795                      "qla4xxx_dpc\n", __func__));
8796        sprintf(buf, "qla4xxx_%lu_dpc", ha->host_no);
8797        ha->dpc_thread = create_singlethread_workqueue(buf);
8798        if (!ha->dpc_thread) {
8799                ql4_printk(KERN_WARNING, ha, "Unable to start DPC thread!\n");
8800                ret = -ENODEV;
8801                goto remove_host;
8802        }
8803        INIT_WORK(&ha->dpc_work, qla4xxx_do_dpc);
8804
8805        ha->task_wq = alloc_workqueue("qla4xxx_%lu_task", WQ_MEM_RECLAIM, 1,
8806                                      ha->host_no);
8807        if (!ha->task_wq) {
8808                ql4_printk(KERN_WARNING, ha, "Unable to start task thread!\n");
8809                ret = -ENODEV;
8810                goto remove_host;
8811        }
8812
8813        /*
8814         * For ISP-8XXX, request_irqs is called in qla4_8xxx_load_risc
8815         * (which is called indirectly by qla4xxx_initialize_adapter),
8816         * so that irqs will be registered after crbinit but before
8817         * mbx_intr_enable.
8818         */
8819        if (is_qla40XX(ha)) {
8820                ret = qla4xxx_request_irqs(ha);
8821                if (ret) {
8822                        ql4_printk(KERN_WARNING, ha, "Failed to reserve "
8823                            "interrupt %d already in use.\n", pdev->irq);
8824                        goto remove_host;
8825                }
8826        }
8827
8828        pci_save_state(ha->pdev);
8829        ha->isp_ops->enable_intrs(ha);
8830
8831        /* Start timer thread. */
8832        qla4xxx_start_timer(ha, 1);
8833
8834        set_bit(AF_INIT_DONE, &ha->flags);
8835
8836        qla4_8xxx_alloc_sysfs_attr(ha);
8837
8838        printk(KERN_INFO
8839               " QLogic iSCSI HBA Driver version: %s\n"
8840               "  QLogic ISP%04x @ %s, host#=%ld, fw=%02d.%02d.%02d.%02d\n",
8841               qla4xxx_version_str, ha->pdev->device, pci_name(ha->pdev),
8842               ha->host_no, ha->fw_info.fw_major, ha->fw_info.fw_minor,
8843               ha->fw_info.fw_patch, ha->fw_info.fw_build);
8844
8845        /* Set the driver version */
8846        if (is_qla80XX(ha))
8847                qla4_8xxx_set_param(ha, SET_DRVR_VERSION);
8848
8849        if (qla4xxx_setup_boot_info(ha))
8850                ql4_printk(KERN_ERR, ha,
8851                           "%s: No iSCSI boot target configured\n", __func__);
8852
8853        set_bit(DPC_SYSFS_DDB_EXPORT, &ha->dpc_flags);
8854        /* Perform the build ddb list and login to each */
8855        qla4xxx_build_ddb_list(ha, INIT_ADAPTER);
8856        iscsi_host_for_each_session(ha->host, qla4xxx_login_flash_ddb);
8857        qla4xxx_wait_login_resp_boot_tgt(ha);
8858
8859        qla4xxx_create_chap_list(ha);
8860
8861        qla4xxx_create_ifaces(ha);
8862        return 0;
8863
8864remove_host:
8865        scsi_remove_host(ha->host);
8866
8867probe_failed:
8868        qla4xxx_free_adapter(ha);
8869
8870probe_failed_ioconfig:
8871        pci_disable_pcie_error_reporting(pdev);
8872        scsi_host_put(ha->host);
8873
8874probe_disable_device:
8875        pci_disable_device(pdev);
8876
8877        return ret;
8878}
8879
8880/**
8881 * qla4xxx_prevent_other_port_reinit - prevent other port from re-initialize
8882 * @ha: pointer to adapter structure
8883 *
8884 * Mark the other ISP-4xxx port to indicate that the driver is being removed,
8885 * so that the other port will not re-initialize while in the process of
8886 * removing the ha due to driver unload or hba hotplug.
8887 **/
8888static void qla4xxx_prevent_other_port_reinit(struct scsi_qla_host *ha)
8889{
8890        struct scsi_qla_host *other_ha = NULL;
8891        struct pci_dev *other_pdev = NULL;
8892        int fn = ISP4XXX_PCI_FN_2;
8893
8894        /*iscsi function numbers for ISP4xxx is 1 and 3*/
8895        if (PCI_FUNC(ha->pdev->devfn) & BIT_1)
8896                fn = ISP4XXX_PCI_FN_1;
8897
8898        other_pdev =
8899                pci_get_domain_bus_and_slot(pci_domain_nr(ha->pdev->bus),
8900                ha->pdev->bus->number, PCI_DEVFN(PCI_SLOT(ha->pdev->devfn),
8901                fn));
8902
8903        /* Get other_ha if other_pdev is valid and state is enable*/
8904        if (other_pdev) {
8905                if (atomic_read(&other_pdev->enable_cnt)) {
8906                        other_ha = pci_get_drvdata(other_pdev);
8907                        if (other_ha) {
8908                                set_bit(AF_HA_REMOVAL, &other_ha->flags);
8909                                DEBUG2(ql4_printk(KERN_INFO, ha, "%s: "
8910                                    "Prevent %s reinit\n", __func__,
8911                                    dev_name(&other_ha->pdev->dev)));
8912                        }
8913                }
8914                pci_dev_put(other_pdev);
8915        }
8916}
8917
8918static void qla4xxx_destroy_ddb(struct scsi_qla_host *ha,
8919                struct ddb_entry *ddb_entry)
8920{
8921        struct dev_db_entry *fw_ddb_entry = NULL;
8922        dma_addr_t fw_ddb_entry_dma;
8923        unsigned long wtime;
8924        uint32_t ddb_state;
8925        int options;
8926        int status;
8927
8928        options = LOGOUT_OPTION_CLOSE_SESSION;
8929        if (qla4xxx_session_logout_ddb(ha, ddb_entry, options) == QLA_ERROR) {
8930                ql4_printk(KERN_ERR, ha, "%s: Logout failed\n", __func__);
8931                goto clear_ddb;
8932        }
8933
8934        fw_ddb_entry = dma_alloc_coherent(&ha->pdev->dev, sizeof(*fw_ddb_entry),
8935                                          &fw_ddb_entry_dma, GFP_KERNEL);
8936        if (!fw_ddb_entry) {
8937                ql4_printk(KERN_ERR, ha,
8938                           "%s: Unable to allocate dma buffer\n", __func__);
8939                goto clear_ddb;
8940        }
8941
8942        wtime = jiffies + (HZ * LOGOUT_TOV);
8943        do {
8944                status = qla4xxx_get_fwddb_entry(ha, ddb_entry->fw_ddb_index,
8945                                                 fw_ddb_entry, fw_ddb_entry_dma,
8946                                                 NULL, NULL, &ddb_state, NULL,
8947                                                 NULL, NULL);
8948                if (status == QLA_ERROR)
8949                        goto free_ddb;
8950
8951                if ((ddb_state == DDB_DS_NO_CONNECTION_ACTIVE) ||
8952                    (ddb_state == DDB_DS_SESSION_FAILED))
8953                        goto free_ddb;
8954
8955                schedule_timeout_uninterruptible(HZ);
8956        } while ((time_after(wtime, jiffies)));
8957
8958free_ddb:
8959        dma_free_coherent(&ha->pdev->dev, sizeof(*fw_ddb_entry),
8960                          fw_ddb_entry, fw_ddb_entry_dma);
8961clear_ddb:
8962        qla4xxx_clear_ddb_entry(ha, ddb_entry->fw_ddb_index);
8963}
8964
8965static void qla4xxx_destroy_fw_ddb_session(struct scsi_qla_host *ha)
8966{
8967        struct ddb_entry *ddb_entry;
8968        int idx;
8969
8970        for (idx = 0; idx < MAX_DDB_ENTRIES; idx++) {
8971
8972                ddb_entry = qla4xxx_lookup_ddb_by_fw_index(ha, idx);
8973                if ((ddb_entry != NULL) &&
8974                    (ddb_entry->ddb_type == FLASH_DDB)) {
8975
8976                        qla4xxx_destroy_ddb(ha, ddb_entry);
8977                        /*
8978                         * we have decremented the reference count of the driver
8979                         * when we setup the session to have the driver unload
8980                         * to be seamless without actually destroying the
8981                         * session
8982                         **/
8983                        try_module_get(qla4xxx_iscsi_transport.owner);
8984                        iscsi_destroy_endpoint(ddb_entry->conn->ep);
8985                        qla4xxx_free_ddb(ha, ddb_entry);
8986                        iscsi_session_teardown(ddb_entry->sess);
8987                }
8988        }
8989}
8990/**
8991 * qla4xxx_remove_adapter - callback function to remove adapter.
8992 * @pdev: PCI device pointer
8993 **/
8994static void qla4xxx_remove_adapter(struct pci_dev *pdev)
8995{
8996        struct scsi_qla_host *ha;
8997
8998        /*
8999         * If the PCI device is disabled then it means probe_adapter had
9000         * failed and resources already cleaned up on probe_adapter exit.
9001         */
9002        if (!pci_is_enabled(pdev))
9003                return;
9004
9005        ha = pci_get_drvdata(pdev);
9006
9007        if (is_qla40XX(ha))
9008                qla4xxx_prevent_other_port_reinit(ha);
9009
9010        /* destroy iface from sysfs */
9011        qla4xxx_destroy_ifaces(ha);
9012
9013        if ((!ql4xdisablesysfsboot) && ha->boot_kset)
9014                iscsi_boot_destroy_kset(ha->boot_kset);
9015
9016        qla4xxx_destroy_fw_ddb_session(ha);
9017        qla4_8xxx_free_sysfs_attr(ha);
9018
9019        qla4xxx_sysfs_ddb_remove(ha);
9020        scsi_remove_host(ha->host);
9021
9022        qla4xxx_free_adapter(ha);
9023
9024        scsi_host_put(ha->host);
9025
9026        pci_disable_pcie_error_reporting(pdev);
9027        pci_disable_device(pdev);
9028}
9029
9030/**
9031 * qla4xxx_config_dma_addressing() - Configure OS DMA addressing method.
9032 * @ha: HA context
9033 */
9034static void qla4xxx_config_dma_addressing(struct scsi_qla_host *ha)
9035{
9036        /* Update our PCI device dma_mask for full 64 bit mask */
9037        if (dma_set_mask_and_coherent(&ha->pdev->dev, DMA_BIT_MASK(64))) {
9038                dev_dbg(&ha->pdev->dev,
9039                          "Failed to set 64 bit PCI consistent mask; "
9040                           "using 32 bit.\n");
9041                dma_set_mask_and_coherent(&ha->pdev->dev, DMA_BIT_MASK(32));
9042        }
9043}
9044
9045static int qla4xxx_slave_alloc(struct scsi_device *sdev)
9046{
9047        struct iscsi_cls_session *cls_sess;
9048        struct iscsi_session *sess;
9049        struct ddb_entry *ddb;
9050        int queue_depth = QL4_DEF_QDEPTH;
9051
9052        cls_sess = starget_to_session(sdev->sdev_target);
9053        sess = cls_sess->dd_data;
9054        ddb = sess->dd_data;
9055
9056        sdev->hostdata = ddb;
9057
9058        if (ql4xmaxqdepth != 0 && ql4xmaxqdepth <= 0xffffU)
9059                queue_depth = ql4xmaxqdepth;
9060
9061        scsi_change_queue_depth(sdev, queue_depth);
9062        return 0;
9063}
9064
9065/**
9066 * qla4xxx_del_from_active_array - returns an active srb
9067 * @ha: Pointer to host adapter structure.
9068 * @index: index into the active_array
9069 *
9070 * This routine removes and returns the srb at the specified index
9071 **/
9072struct srb *qla4xxx_del_from_active_array(struct scsi_qla_host *ha,
9073    uint32_t index)
9074{
9075        struct srb *srb = NULL;
9076        struct scsi_cmnd *cmd = NULL;
9077
9078        cmd = scsi_host_find_tag(ha->host, index);
9079        if (!cmd)
9080                return srb;
9081
9082        srb = (struct srb *)CMD_SP(cmd);
9083        if (!srb)
9084                return srb;
9085
9086        /* update counters */
9087        if (srb->flags & SRB_DMA_VALID) {
9088                ha->iocb_cnt -= srb->iocb_cnt;
9089                if (srb->cmd)
9090                        srb->cmd->host_scribble =
9091                                (unsigned char *)(unsigned long) MAX_SRBS;
9092        }
9093        return srb;
9094}
9095
9096/**
9097 * qla4xxx_eh_wait_on_command - waits for command to be returned by firmware
9098 * @ha: Pointer to host adapter structure.
9099 * @cmd: Scsi Command to wait on.
9100 *
9101 * This routine waits for the command to be returned by the Firmware
9102 * for some max time.
9103 **/
9104static int qla4xxx_eh_wait_on_command(struct scsi_qla_host *ha,
9105                                      struct scsi_cmnd *cmd)
9106{
9107        int done = 0;
9108        struct srb *rp;
9109        uint32_t max_wait_time = EH_WAIT_CMD_TOV;
9110        int ret = SUCCESS;
9111
9112        /* Dont wait on command if PCI error is being handled
9113         * by PCI AER driver
9114         */
9115        if (unlikely(pci_channel_offline(ha->pdev)) ||
9116            (test_bit(AF_EEH_BUSY, &ha->flags))) {
9117                ql4_printk(KERN_WARNING, ha, "scsi%ld: Return from %s\n",
9118                    ha->host_no, __func__);
9119                return ret;
9120        }
9121
9122        do {
9123                /* Checking to see if its returned to OS */
9124                rp = (struct srb *) CMD_SP(cmd);
9125                if (rp == NULL) {
9126                        done++;
9127                        break;
9128                }
9129
9130                msleep(2000);
9131        } while (max_wait_time--);
9132
9133        return done;
9134}
9135
9136/**
9137 * qla4xxx_wait_for_hba_online - waits for HBA to come online
9138 * @ha: Pointer to host adapter structure
9139 **/
9140static int qla4xxx_wait_for_hba_online(struct scsi_qla_host *ha)
9141{
9142        unsigned long wait_online;
9143
9144        wait_online = jiffies + (HBA_ONLINE_TOV * HZ);
9145        while (time_before(jiffies, wait_online)) {
9146
9147                if (adapter_up(ha))
9148                        return QLA_SUCCESS;
9149
9150                msleep(2000);
9151        }
9152
9153        return QLA_ERROR;
9154}
9155
9156/**
9157 * qla4xxx_eh_wait_for_commands - wait for active cmds to finish.
9158 * @ha: pointer to HBA
9159 * @stgt: pointer to SCSI target
9160 * @sdev: pointer to SCSI device
9161 *
9162 * This function waits for all outstanding commands to a lun to complete. It
9163 * returns 0 if all pending commands are returned and 1 otherwise.
9164 **/
9165static int qla4xxx_eh_wait_for_commands(struct scsi_qla_host *ha,
9166                                        struct scsi_target *stgt,
9167                                        struct scsi_device *sdev)
9168{
9169        int cnt;
9170        int status = 0;
9171        struct scsi_cmnd *cmd;
9172
9173        /*
9174         * Waiting for all commands for the designated target or dev
9175         * in the active array
9176         */
9177        for (cnt = 0; cnt < ha->host->can_queue; cnt++) {
9178                cmd = scsi_host_find_tag(ha->host, cnt);
9179                if (cmd && stgt == scsi_target(cmd->device) &&
9180                    (!sdev || sdev == cmd->device)) {
9181                        if (!qla4xxx_eh_wait_on_command(ha, cmd)) {
9182                                status++;
9183                                break;
9184                        }
9185                }
9186        }
9187        return status;
9188}
9189
9190/**
9191 * qla4xxx_eh_abort - callback for abort task.
9192 * @cmd: Pointer to Linux's SCSI command structure
9193 *
9194 * This routine is called by the Linux OS to abort the specified
9195 * command.
9196 **/
9197static int qla4xxx_eh_abort(struct scsi_cmnd *cmd)
9198{
9199        struct scsi_qla_host *ha = to_qla_host(cmd->device->host);
9200        unsigned int id = cmd->device->id;
9201        uint64_t lun = cmd->device->lun;
9202        unsigned long flags;
9203        struct srb *srb = NULL;
9204        int ret = SUCCESS;
9205        int wait = 0;
9206        int rval;
9207
9208        ql4_printk(KERN_INFO, ha, "scsi%ld:%d:%llu: Abort command issued cmd=%p, cdb=0x%x\n",
9209                   ha->host_no, id, lun, cmd, cmd->cmnd[0]);
9210
9211        rval = qla4xxx_isp_check_reg(ha);
9212        if (rval != QLA_SUCCESS) {
9213                ql4_printk(KERN_INFO, ha, "PCI/Register disconnect, exiting.\n");
9214                return FAILED;
9215        }
9216
9217        spin_lock_irqsave(&ha->hardware_lock, flags);
9218        srb = (struct srb *) CMD_SP(cmd);
9219        if (!srb) {
9220                spin_unlock_irqrestore(&ha->hardware_lock, flags);
9221                ql4_printk(KERN_INFO, ha, "scsi%ld:%d:%llu: Specified command has already completed.\n",
9222                           ha->host_no, id, lun);
9223                return SUCCESS;
9224        }
9225        kref_get(&srb->srb_ref);
9226        spin_unlock_irqrestore(&ha->hardware_lock, flags);
9227
9228        if (qla4xxx_abort_task(ha, srb) != QLA_SUCCESS) {
9229                DEBUG3(printk("scsi%ld:%d:%llu: Abort_task mbx failed.\n",
9230                    ha->host_no, id, lun));
9231                ret = FAILED;
9232        } else {
9233                DEBUG3(printk("scsi%ld:%d:%llu: Abort_task mbx success.\n",
9234                    ha->host_no, id, lun));
9235                wait = 1;
9236        }
9237
9238        kref_put(&srb->srb_ref, qla4xxx_srb_compl);
9239
9240        /* Wait for command to complete */
9241        if (wait) {
9242                if (!qla4xxx_eh_wait_on_command(ha, cmd)) {
9243                        DEBUG2(printk("scsi%ld:%d:%llu: Abort handler timed out\n",
9244                            ha->host_no, id, lun));
9245                        ret = FAILED;
9246                }
9247        }
9248
9249        ql4_printk(KERN_INFO, ha,
9250            "scsi%ld:%d:%llu: Abort command - %s\n",
9251            ha->host_no, id, lun, (ret == SUCCESS) ? "succeeded" : "failed");
9252
9253        return ret;
9254}
9255
9256/**
9257 * qla4xxx_eh_device_reset - callback for target reset.
9258 * @cmd: Pointer to Linux's SCSI command structure
9259 *
9260 * This routine is called by the Linux OS to reset all luns on the
9261 * specified target.
9262 **/
9263static int qla4xxx_eh_device_reset(struct scsi_cmnd *cmd)
9264{
9265        struct scsi_qla_host *ha = to_qla_host(cmd->device->host);
9266        struct ddb_entry *ddb_entry = cmd->device->hostdata;
9267        int ret = FAILED, stat;
9268        int rval;
9269
9270        if (!ddb_entry)
9271                return ret;
9272
9273        ret = iscsi_block_scsi_eh(cmd);
9274        if (ret)
9275                return ret;
9276        ret = FAILED;
9277
9278        ql4_printk(KERN_INFO, ha,
9279                   "scsi%ld:%d:%d:%llu: DEVICE RESET ISSUED.\n", ha->host_no,
9280                   cmd->device->channel, cmd->device->id, cmd->device->lun);
9281
9282        DEBUG2(printk(KERN_INFO
9283                      "scsi%ld: DEVICE_RESET cmd=%p jiffies = 0x%lx, to=%x,"
9284                      "dpc_flags=%lx, status=%x allowed=%d\n", ha->host_no,
9285                      cmd, jiffies, scsi_cmd_to_rq(cmd)->timeout / HZ,
9286                      ha->dpc_flags, cmd->result, cmd->allowed));
9287
9288        rval = qla4xxx_isp_check_reg(ha);
9289        if (rval != QLA_SUCCESS) {
9290                ql4_printk(KERN_INFO, ha, "PCI/Register disconnect, exiting.\n");
9291                return FAILED;
9292        }
9293
9294        /* FIXME: wait for hba to go online */
9295        stat = qla4xxx_reset_lun(ha, ddb_entry, cmd->device->lun);
9296        if (stat != QLA_SUCCESS) {
9297                ql4_printk(KERN_INFO, ha, "DEVICE RESET FAILED. %d\n", stat);
9298                goto eh_dev_reset_done;
9299        }
9300
9301        if (qla4xxx_eh_wait_for_commands(ha, scsi_target(cmd->device),
9302                                         cmd->device)) {
9303                ql4_printk(KERN_INFO, ha,
9304                           "DEVICE RESET FAILED - waiting for "
9305                           "commands.\n");
9306                goto eh_dev_reset_done;
9307        }
9308
9309        /* Send marker. */
9310        if (qla4xxx_send_marker_iocb(ha, ddb_entry, cmd->device->lun,
9311                MM_LUN_RESET) != QLA_SUCCESS)
9312                goto eh_dev_reset_done;
9313
9314        ql4_printk(KERN_INFO, ha,
9315                   "scsi(%ld:%d:%d:%llu): DEVICE RESET SUCCEEDED.\n",
9316                   ha->host_no, cmd->device->channel, cmd->device->id,
9317                   cmd->device->lun);
9318
9319        ret = SUCCESS;
9320
9321eh_dev_reset_done:
9322
9323        return ret;
9324}
9325
9326/**
9327 * qla4xxx_eh_target_reset - callback for target reset.
9328 * @cmd: Pointer to Linux's SCSI command structure
9329 *
9330 * This routine is called by the Linux OS to reset the target.
9331 **/
9332static int qla4xxx_eh_target_reset(struct scsi_cmnd *cmd)
9333{
9334        struct scsi_qla_host *ha = to_qla_host(cmd->device->host);
9335        struct ddb_entry *ddb_entry = cmd->device->hostdata;
9336        int stat, ret;
9337        int rval;
9338
9339        if (!ddb_entry)
9340                return FAILED;
9341
9342        ret = iscsi_block_scsi_eh(cmd);
9343        if (ret)
9344                return ret;
9345
9346        starget_printk(KERN_INFO, scsi_target(cmd->device),
9347                       "WARM TARGET RESET ISSUED.\n");
9348
9349        DEBUG2(printk(KERN_INFO
9350                      "scsi%ld: TARGET_DEVICE_RESET cmd=%p jiffies = 0x%lx, "
9351                      "to=%x,dpc_flags=%lx, status=%x allowed=%d\n",
9352                      ha->host_no, cmd, jiffies, scsi_cmd_to_rq(cmd)->timeout / HZ,
9353                      ha->dpc_flags, cmd->result, cmd->allowed));
9354
9355        rval = qla4xxx_isp_check_reg(ha);
9356        if (rval != QLA_SUCCESS) {
9357                ql4_printk(KERN_INFO, ha, "PCI/Register disconnect, exiting.\n");
9358                return FAILED;
9359        }
9360
9361        stat = qla4xxx_reset_target(ha, ddb_entry);
9362        if (stat != QLA_SUCCESS) {
9363                starget_printk(KERN_INFO, scsi_target(cmd->device),
9364                               "WARM TARGET RESET FAILED.\n");
9365                return FAILED;
9366        }
9367
9368        if (qla4xxx_eh_wait_for_commands(ha, scsi_target(cmd->device),
9369                                         NULL)) {
9370                starget_printk(KERN_INFO, scsi_target(cmd->device),
9371                               "WARM TARGET DEVICE RESET FAILED - "
9372                               "waiting for commands.\n");
9373                return FAILED;
9374        }
9375
9376        /* Send marker. */
9377        if (qla4xxx_send_marker_iocb(ha, ddb_entry, cmd->device->lun,
9378                MM_TGT_WARM_RESET) != QLA_SUCCESS) {
9379                starget_printk(KERN_INFO, scsi_target(cmd->device),
9380                               "WARM TARGET DEVICE RESET FAILED - "
9381                               "marker iocb failed.\n");
9382                return FAILED;
9383        }
9384
9385        starget_printk(KERN_INFO, scsi_target(cmd->device),
9386                       "WARM TARGET RESET SUCCEEDED.\n");
9387        return SUCCESS;
9388}
9389
9390/**
9391 * qla4xxx_is_eh_active - check if error handler is running
9392 * @shost: Pointer to SCSI Host struct
9393 *
9394 * This routine finds that if reset host is called in EH
9395 * scenario or from some application like sg_reset
9396 **/
9397static int qla4xxx_is_eh_active(struct Scsi_Host *shost)
9398{
9399        if (shost->shost_state == SHOST_RECOVERY)
9400                return 1;
9401        return 0;
9402}
9403
9404/**
9405 * qla4xxx_eh_host_reset - kernel callback
9406 * @cmd: Pointer to Linux's SCSI command structure
9407 *
9408 * This routine is invoked by the Linux kernel to perform fatal error
9409 * recovery on the specified adapter.
9410 **/
9411static int qla4xxx_eh_host_reset(struct scsi_cmnd *cmd)
9412{
9413        int return_status = FAILED;
9414        struct scsi_qla_host *ha;
9415        int rval;
9416
9417        ha = to_qla_host(cmd->device->host);
9418
9419        rval = qla4xxx_isp_check_reg(ha);
9420        if (rval != QLA_SUCCESS) {
9421                ql4_printk(KERN_INFO, ha, "PCI/Register disconnect, exiting.\n");
9422                return FAILED;
9423        }
9424
9425        if ((is_qla8032(ha) || is_qla8042(ha)) && ql4xdontresethba)
9426                qla4_83xx_set_idc_dontreset(ha);
9427
9428        /*
9429         * For ISP8324 and ISP8042, if IDC_CTRL DONTRESET_BIT0 is set by other
9430         * protocol drivers, we should not set device_state to NEED_RESET
9431         */
9432        if (ql4xdontresethba ||
9433            ((is_qla8032(ha) || is_qla8042(ha)) &&
9434             qla4_83xx_idc_dontreset(ha))) {
9435                DEBUG2(printk("scsi%ld: %s: Don't Reset HBA\n",
9436                     ha->host_no, __func__));
9437
9438                /* Clear outstanding srb in queues */
9439                if (qla4xxx_is_eh_active(cmd->device->host))
9440                        qla4xxx_abort_active_cmds(ha, DID_ABORT << 16);
9441
9442                return FAILED;
9443        }
9444
9445        ql4_printk(KERN_INFO, ha,
9446                   "scsi(%ld:%d:%d:%llu): HOST RESET ISSUED.\n", ha->host_no,
9447                   cmd->device->channel, cmd->device->id, cmd->device->lun);
9448
9449        if (qla4xxx_wait_for_hba_online(ha) != QLA_SUCCESS) {
9450                DEBUG2(printk("scsi%ld:%d: %s: Unable to reset host.  Adapter "
9451                              "DEAD.\n", ha->host_no, cmd->device->channel,
9452                              __func__));
9453
9454                return FAILED;
9455        }
9456
9457        if (!test_bit(DPC_RESET_HA, &ha->dpc_flags)) {
9458                if (is_qla80XX(ha))
9459                        set_bit(DPC_RESET_HA_FW_CONTEXT, &ha->dpc_flags);
9460                else
9461                        set_bit(DPC_RESET_HA, &ha->dpc_flags);
9462        }
9463
9464        if (qla4xxx_recover_adapter(ha) == QLA_SUCCESS)
9465                return_status = SUCCESS;
9466
9467        ql4_printk(KERN_INFO, ha, "HOST RESET %s.\n",
9468                   return_status == FAILED ? "FAILED" : "SUCCEEDED");
9469
9470        return return_status;
9471}
9472
9473static int qla4xxx_context_reset(struct scsi_qla_host *ha)
9474{
9475        uint32_t mbox_cmd[MBOX_REG_COUNT];
9476        uint32_t mbox_sts[MBOX_REG_COUNT];
9477        struct addr_ctrl_blk_def *acb = NULL;
9478        uint32_t acb_len = sizeof(struct addr_ctrl_blk_def);
9479        int rval = QLA_SUCCESS;
9480        dma_addr_t acb_dma;
9481
9482        acb = dma_alloc_coherent(&ha->pdev->dev,
9483                                 sizeof(struct addr_ctrl_blk_def),
9484                                 &acb_dma, GFP_KERNEL);
9485        if (!acb) {
9486                ql4_printk(KERN_ERR, ha, "%s: Unable to alloc acb\n",
9487                           __func__);
9488                rval = -ENOMEM;
9489                goto exit_port_reset;
9490        }
9491
9492        memset(acb, 0, acb_len);
9493
9494        rval = qla4xxx_get_acb(ha, acb_dma, PRIMARI_ACB, acb_len);
9495        if (rval != QLA_SUCCESS) {
9496                rval = -EIO;
9497                goto exit_free_acb;
9498        }
9499
9500        rval = qla4xxx_disable_acb(ha);
9501        if (rval != QLA_SUCCESS) {
9502                rval = -EIO;
9503                goto exit_free_acb;
9504        }
9505
9506        wait_for_completion_timeout(&ha->disable_acb_comp,
9507                                    DISABLE_ACB_TOV * HZ);
9508
9509        rval = qla4xxx_set_acb(ha, &mbox_cmd[0], &mbox_sts[0], acb_dma);
9510        if (rval != QLA_SUCCESS) {
9511                rval = -EIO;
9512                goto exit_free_acb;
9513        }
9514
9515exit_free_acb:
9516        dma_free_coherent(&ha->pdev->dev, sizeof(struct addr_ctrl_blk_def),
9517                          acb, acb_dma);
9518exit_port_reset:
9519        DEBUG2(ql4_printk(KERN_INFO, ha, "%s %s\n", __func__,
9520                          rval == QLA_SUCCESS ? "SUCCEEDED" : "FAILED"));
9521        return rval;
9522}
9523
9524static int qla4xxx_host_reset(struct Scsi_Host *shost, int reset_type)
9525{
9526        struct scsi_qla_host *ha = to_qla_host(shost);
9527        int rval = QLA_SUCCESS;
9528        uint32_t idc_ctrl;
9529
9530        if (ql4xdontresethba) {
9531                DEBUG2(ql4_printk(KERN_INFO, ha, "%s: Don't Reset HBA\n",
9532                                  __func__));
9533                rval = -EPERM;
9534                goto exit_host_reset;
9535        }
9536
9537        if (test_bit(DPC_RESET_HA, &ha->dpc_flags))
9538                goto recover_adapter;
9539
9540        switch (reset_type) {
9541        case SCSI_ADAPTER_RESET:
9542                set_bit(DPC_RESET_HA, &ha->dpc_flags);
9543                break;
9544        case SCSI_FIRMWARE_RESET:
9545                if (!test_bit(DPC_RESET_HA, &ha->dpc_flags)) {
9546                        if (is_qla80XX(ha))
9547                                /* set firmware context reset */
9548                                set_bit(DPC_RESET_HA_FW_CONTEXT,
9549                                        &ha->dpc_flags);
9550                        else {
9551                                rval = qla4xxx_context_reset(ha);
9552                                goto exit_host_reset;
9553                        }
9554                }
9555                break;
9556        }
9557
9558recover_adapter:
9559        /* For ISP8324 and ISP8042 set graceful reset bit in IDC_DRV_CTRL if
9560         * reset is issued by application */
9561        if ((is_qla8032(ha) || is_qla8042(ha)) &&
9562            test_bit(DPC_RESET_HA, &ha->dpc_flags)) {
9563                idc_ctrl = qla4_83xx_rd_reg(ha, QLA83XX_IDC_DRV_CTRL);
9564                qla4_83xx_wr_reg(ha, QLA83XX_IDC_DRV_CTRL,
9565                                 (idc_ctrl | GRACEFUL_RESET_BIT1));
9566        }
9567
9568        rval = qla4xxx_recover_adapter(ha);
9569        if (rval != QLA_SUCCESS) {
9570                DEBUG2(ql4_printk(KERN_INFO, ha, "%s: recover adapter fail\n",
9571                                  __func__));
9572                rval = -EIO;
9573        }
9574
9575exit_host_reset:
9576        return rval;
9577}
9578
9579/* PCI AER driver recovers from all correctable errors w/o
9580 * driver intervention. For uncorrectable errors PCI AER
9581 * driver calls the following device driver's callbacks
9582 *
9583 * - Fatal Errors - link_reset
9584 * - Non-Fatal Errors - driver's error_detected() which
9585 * returns CAN_RECOVER, NEED_RESET or DISCONNECT.
9586 *
9587 * PCI AER driver calls
9588 * CAN_RECOVER - driver's mmio_enabled(), mmio_enabled()
9589 *               returns RECOVERED or NEED_RESET if fw_hung
9590 * NEED_RESET - driver's slot_reset()
9591 * DISCONNECT - device is dead & cannot recover
9592 * RECOVERED - driver's resume()
9593 */
9594static pci_ers_result_t
9595qla4xxx_pci_error_detected(struct pci_dev *pdev, pci_channel_state_t state)
9596{
9597        struct scsi_qla_host *ha = pci_get_drvdata(pdev);
9598
9599        ql4_printk(KERN_WARNING, ha, "scsi%ld: %s: error detected:state %x\n",
9600            ha->host_no, __func__, state);
9601
9602        if (!is_aer_supported(ha))
9603                return PCI_ERS_RESULT_NONE;
9604
9605        switch (state) {
9606        case pci_channel_io_normal:
9607                clear_bit(AF_EEH_BUSY, &ha->flags);
9608                return PCI_ERS_RESULT_CAN_RECOVER;
9609        case pci_channel_io_frozen:
9610                set_bit(AF_EEH_BUSY, &ha->flags);
9611                qla4xxx_mailbox_premature_completion(ha);
9612                qla4xxx_free_irqs(ha);
9613                pci_disable_device(pdev);
9614                /* Return back all IOs */
9615                qla4xxx_abort_active_cmds(ha, DID_RESET << 16);
9616                return PCI_ERS_RESULT_NEED_RESET;
9617        case pci_channel_io_perm_failure:
9618                set_bit(AF_EEH_BUSY, &ha->flags);
9619                set_bit(AF_PCI_CHANNEL_IO_PERM_FAILURE, &ha->flags);
9620                qla4xxx_abort_active_cmds(ha, DID_NO_CONNECT << 16);
9621                return PCI_ERS_RESULT_DISCONNECT;
9622        }
9623        return PCI_ERS_RESULT_NEED_RESET;
9624}
9625
9626/**
9627 * qla4xxx_pci_mmio_enabled() - gets called if
9628 * qla4xxx_pci_error_detected() returns PCI_ERS_RESULT_CAN_RECOVER
9629 * and read/write to the device still works.
9630 * @pdev: PCI device pointer
9631 **/
9632static pci_ers_result_t
9633qla4xxx_pci_mmio_enabled(struct pci_dev *pdev)
9634{
9635        struct scsi_qla_host *ha = pci_get_drvdata(pdev);
9636
9637        if (!is_aer_supported(ha))
9638                return PCI_ERS_RESULT_NONE;
9639
9640        return PCI_ERS_RESULT_RECOVERED;
9641}
9642
9643static uint32_t qla4_8xxx_error_recovery(struct scsi_qla_host *ha)
9644{
9645        uint32_t rval = QLA_ERROR;
9646        int fn;
9647        struct pci_dev *other_pdev = NULL;
9648
9649        ql4_printk(KERN_WARNING, ha, "scsi%ld: In %s\n", ha->host_no, __func__);
9650
9651        set_bit(DPC_RESET_ACTIVE, &ha->dpc_flags);
9652
9653        if (test_bit(AF_ONLINE, &ha->flags)) {
9654                clear_bit(AF_ONLINE, &ha->flags);
9655                clear_bit(AF_LINK_UP, &ha->flags);
9656                iscsi_host_for_each_session(ha->host, qla4xxx_fail_session);
9657                qla4xxx_process_aen(ha, FLUSH_DDB_CHANGED_AENS);
9658        }
9659
9660        fn = PCI_FUNC(ha->pdev->devfn);
9661        if (is_qla8022(ha)) {
9662                while (fn > 0) {
9663                        fn--;
9664                        ql4_printk(KERN_INFO, ha, "scsi%ld: %s: Finding PCI device at func %x\n",
9665                                   ha->host_no, __func__, fn);
9666                        /* Get the pci device given the domain, bus,
9667                         * slot/function number */
9668                        other_pdev = pci_get_domain_bus_and_slot(
9669                                           pci_domain_nr(ha->pdev->bus),
9670                                           ha->pdev->bus->number,
9671                                           PCI_DEVFN(PCI_SLOT(ha->pdev->devfn),
9672                                           fn));
9673
9674                        if (!other_pdev)
9675                                continue;
9676
9677                        if (atomic_read(&other_pdev->enable_cnt)) {
9678                                ql4_printk(KERN_INFO, ha, "scsi%ld: %s: Found PCI func in enabled state%x\n",
9679                                           ha->host_no, __func__, fn);
9680                                pci_dev_put(other_pdev);
9681                                break;
9682                        }
9683                        pci_dev_put(other_pdev);
9684                }
9685        } else {
9686                /* this case is meant for ISP83xx/ISP84xx only */
9687                if (qla4_83xx_can_perform_reset(ha)) {
9688                        /* reset fn as iSCSI is going to perform the reset */
9689                        fn = 0;
9690                }
9691        }
9692
9693        /* The first function on the card, the reset owner will
9694         * start & initialize the firmware. The other functions
9695         * on the card will reset the firmware context
9696         */
9697        if (!fn) {
9698                ql4_printk(KERN_INFO, ha, "scsi%ld: %s: devfn being reset "
9699                    "0x%x is the owner\n", ha->host_no, __func__,
9700                    ha->pdev->devfn);
9701
9702                ha->isp_ops->idc_lock(ha);
9703                qla4_8xxx_wr_direct(ha, QLA8XXX_CRB_DEV_STATE,
9704                                    QLA8XXX_DEV_COLD);
9705                ha->isp_ops->idc_unlock(ha);
9706
9707                rval = qla4_8xxx_update_idc_reg(ha);
9708                if (rval == QLA_ERROR) {
9709                        ql4_printk(KERN_INFO, ha, "scsi%ld: %s: HW State: FAILED\n",
9710                                   ha->host_no, __func__);
9711                        ha->isp_ops->idc_lock(ha);
9712                        qla4_8xxx_wr_direct(ha, QLA8XXX_CRB_DEV_STATE,
9713                                            QLA8XXX_DEV_FAILED);
9714                        ha->isp_ops->idc_unlock(ha);
9715                        goto exit_error_recovery;
9716                }
9717
9718                clear_bit(AF_FW_RECOVERY, &ha->flags);
9719                rval = qla4xxx_initialize_adapter(ha, RESET_ADAPTER);
9720
9721                if (rval != QLA_SUCCESS) {
9722                        ql4_printk(KERN_INFO, ha, "scsi%ld: %s: HW State: "
9723                            "FAILED\n", ha->host_no, __func__);
9724                        qla4xxx_free_irqs(ha);
9725                        ha->isp_ops->idc_lock(ha);
9726                        qla4_8xxx_clear_drv_active(ha);
9727                        qla4_8xxx_wr_direct(ha, QLA8XXX_CRB_DEV_STATE,
9728                                            QLA8XXX_DEV_FAILED);
9729                        ha->isp_ops->idc_unlock(ha);
9730                } else {
9731                        ql4_printk(KERN_INFO, ha, "scsi%ld: %s: HW State: "
9732                            "READY\n", ha->host_no, __func__);
9733                        ha->isp_ops->idc_lock(ha);
9734                        qla4_8xxx_wr_direct(ha, QLA8XXX_CRB_DEV_STATE,
9735                                            QLA8XXX_DEV_READY);
9736                        /* Clear driver state register */
9737                        qla4_8xxx_wr_direct(ha, QLA8XXX_CRB_DRV_STATE, 0);
9738                        qla4_8xxx_set_drv_active(ha);
9739                        ha->isp_ops->idc_unlock(ha);
9740                        ha->isp_ops->enable_intrs(ha);
9741                }
9742        } else {
9743                ql4_printk(KERN_INFO, ha, "scsi%ld: %s: devfn 0x%x is not "
9744                    "the reset owner\n", ha->host_no, __func__,
9745                    ha->pdev->devfn);
9746                if ((qla4_8xxx_rd_direct(ha, QLA8XXX_CRB_DEV_STATE) ==
9747                     QLA8XXX_DEV_READY)) {
9748                        clear_bit(AF_FW_RECOVERY, &ha->flags);
9749                        rval = qla4xxx_initialize_adapter(ha, RESET_ADAPTER);
9750                        if (rval == QLA_SUCCESS)
9751                                ha->isp_ops->enable_intrs(ha);
9752                        else
9753                                qla4xxx_free_irqs(ha);
9754
9755                        ha->isp_ops->idc_lock(ha);
9756                        qla4_8xxx_set_drv_active(ha);
9757                        ha->isp_ops->idc_unlock(ha);
9758                }
9759        }
9760exit_error_recovery:
9761        clear_bit(DPC_RESET_ACTIVE, &ha->dpc_flags);
9762        return rval;
9763}
9764
9765static pci_ers_result_t
9766qla4xxx_pci_slot_reset(struct pci_dev *pdev)
9767{
9768        pci_ers_result_t ret = PCI_ERS_RESULT_DISCONNECT;
9769        struct scsi_qla_host *ha = pci_get_drvdata(pdev);
9770        int rc;
9771
9772        ql4_printk(KERN_WARNING, ha, "scsi%ld: %s: slot_reset\n",
9773            ha->host_no, __func__);
9774
9775        if (!is_aer_supported(ha))
9776                return PCI_ERS_RESULT_NONE;
9777
9778        /* Restore the saved state of PCIe device -
9779         * BAR registers, PCI Config space, PCIX, MSI,
9780         * IOV states
9781         */
9782        pci_restore_state(pdev);
9783
9784        /* pci_restore_state() clears the saved_state flag of the device
9785         * save restored state which resets saved_state flag
9786         */
9787        pci_save_state(pdev);
9788
9789        /* Initialize device or resume if in suspended state */
9790        rc = pci_enable_device(pdev);
9791        if (rc) {
9792                ql4_printk(KERN_WARNING, ha, "scsi%ld: %s: Can't re-enable "
9793                    "device after reset\n", ha->host_no, __func__);
9794                goto exit_slot_reset;
9795        }
9796
9797        ha->isp_ops->disable_intrs(ha);
9798
9799        if (is_qla80XX(ha)) {
9800                if (qla4_8xxx_error_recovery(ha) == QLA_SUCCESS) {
9801                        ret = PCI_ERS_RESULT_RECOVERED;
9802                        goto exit_slot_reset;
9803                } else
9804                        goto exit_slot_reset;
9805        }
9806
9807exit_slot_reset:
9808        ql4_printk(KERN_WARNING, ha, "scsi%ld: %s: Return=%x\n"
9809            "device after reset\n", ha->host_no, __func__, ret);
9810        return ret;
9811}
9812
9813static void
9814qla4xxx_pci_resume(struct pci_dev *pdev)
9815{
9816        struct scsi_qla_host *ha = pci_get_drvdata(pdev);
9817        int ret;
9818
9819        ql4_printk(KERN_WARNING, ha, "scsi%ld: %s: pci_resume\n",
9820            ha->host_no, __func__);
9821
9822        ret = qla4xxx_wait_for_hba_online(ha);
9823        if (ret != QLA_SUCCESS) {
9824                ql4_printk(KERN_ERR, ha, "scsi%ld: %s: the device failed to "
9825                    "resume I/O from slot/link_reset\n", ha->host_no,
9826                     __func__);
9827        }
9828
9829        clear_bit(AF_EEH_BUSY, &ha->flags);
9830}
9831
9832static const struct pci_error_handlers qla4xxx_err_handler = {
9833        .error_detected = qla4xxx_pci_error_detected,
9834        .mmio_enabled = qla4xxx_pci_mmio_enabled,
9835        .slot_reset = qla4xxx_pci_slot_reset,
9836        .resume = qla4xxx_pci_resume,
9837};
9838
9839static struct pci_device_id qla4xxx_pci_tbl[] = {
9840        {
9841                .vendor         = PCI_VENDOR_ID_QLOGIC,
9842                .device         = PCI_DEVICE_ID_QLOGIC_ISP4010,
9843                .subvendor      = PCI_ANY_ID,
9844                .subdevice      = PCI_ANY_ID,
9845        },
9846        {
9847                .vendor         = PCI_VENDOR_ID_QLOGIC,
9848                .device         = PCI_DEVICE_ID_QLOGIC_ISP4022,
9849                .subvendor      = PCI_ANY_ID,
9850                .subdevice      = PCI_ANY_ID,
9851        },
9852        {
9853                .vendor         = PCI_VENDOR_ID_QLOGIC,
9854                .device         = PCI_DEVICE_ID_QLOGIC_ISP4032,
9855                .subvendor      = PCI_ANY_ID,
9856                .subdevice      = PCI_ANY_ID,
9857        },
9858        {
9859                .vendor         = PCI_VENDOR_ID_QLOGIC,
9860                .device         = PCI_DEVICE_ID_QLOGIC_ISP8022,
9861                .subvendor      = PCI_ANY_ID,
9862                .subdevice      = PCI_ANY_ID,
9863        },
9864        {
9865                .vendor         = PCI_VENDOR_ID_QLOGIC,
9866                .device         = PCI_DEVICE_ID_QLOGIC_ISP8324,
9867                .subvendor      = PCI_ANY_ID,
9868                .subdevice      = PCI_ANY_ID,
9869        },
9870        {
9871                .vendor         = PCI_VENDOR_ID_QLOGIC,
9872                .device         = PCI_DEVICE_ID_QLOGIC_ISP8042,
9873                .subvendor      = PCI_ANY_ID,
9874                .subdevice      = PCI_ANY_ID,
9875        },
9876        {0, 0},
9877};
9878MODULE_DEVICE_TABLE(pci, qla4xxx_pci_tbl);
9879
9880static struct pci_driver qla4xxx_pci_driver = {
9881        .name           = DRIVER_NAME,
9882        .id_table       = qla4xxx_pci_tbl,
9883        .probe          = qla4xxx_probe_adapter,
9884        .remove         = qla4xxx_remove_adapter,
9885        .err_handler = &qla4xxx_err_handler,
9886};
9887
9888static int __init qla4xxx_module_init(void)
9889{
9890        int ret;
9891
9892        if (ql4xqfulltracking)
9893                qla4xxx_driver_template.track_queue_depth = 1;
9894
9895        /* Allocate cache for SRBs. */
9896        srb_cachep = kmem_cache_create("qla4xxx_srbs", sizeof(struct srb), 0,
9897                                       SLAB_HWCACHE_ALIGN, NULL);
9898        if (srb_cachep == NULL) {
9899                printk(KERN_ERR
9900                       "%s: Unable to allocate SRB cache..."
9901                       "Failing load!\n", DRIVER_NAME);
9902                ret = -ENOMEM;
9903                goto no_srp_cache;
9904        }
9905
9906        /* Derive version string. */
9907        strcpy(qla4xxx_version_str, QLA4XXX_DRIVER_VERSION);
9908        if (ql4xextended_error_logging)
9909                strcat(qla4xxx_version_str, "-debug");
9910
9911        qla4xxx_scsi_transport =
9912                iscsi_register_transport(&qla4xxx_iscsi_transport);
9913        if (!qla4xxx_scsi_transport){
9914                ret = -ENODEV;
9915                goto release_srb_cache;
9916        }
9917
9918        ret = pci_register_driver(&qla4xxx_pci_driver);
9919        if (ret)
9920                goto unregister_transport;
9921
9922        printk(KERN_INFO "QLogic iSCSI HBA Driver\n");
9923        return 0;
9924
9925unregister_transport:
9926        iscsi_unregister_transport(&qla4xxx_iscsi_transport);
9927release_srb_cache:
9928        kmem_cache_destroy(srb_cachep);
9929no_srp_cache:
9930        return ret;
9931}
9932
9933static void __exit qla4xxx_module_exit(void)
9934{
9935        pci_unregister_driver(&qla4xxx_pci_driver);
9936        iscsi_unregister_transport(&qla4xxx_iscsi_transport);
9937        kmem_cache_destroy(srb_cachep);
9938}
9939
9940module_init(qla4xxx_module_init);
9941module_exit(qla4xxx_module_exit);
9942
9943MODULE_AUTHOR("QLogic Corporation");
9944MODULE_DESCRIPTION("QLogic iSCSI HBA Driver");
9945MODULE_LICENSE("GPL");
9946MODULE_VERSION(QLA4XXX_DRIVER_VERSION);
9947