linux/drivers/scsi/qedi/qedi_main.c
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   1// SPDX-License-Identifier: GPL-2.0-only
   2/*
   3 * QLogic iSCSI Offload Driver
   4 * Copyright (c) 2016 Cavium Inc.
   5 */
   6
   7#include <linux/module.h>
   8#include <linux/pci.h>
   9#include <linux/kernel.h>
  10#include <linux/if_arp.h>
  11#include <scsi/iscsi_if.h>
  12#include <linux/inet.h>
  13#include <net/arp.h>
  14#include <linux/list.h>
  15#include <linux/kthread.h>
  16#include <linux/mm.h>
  17#include <linux/if_vlan.h>
  18#include <linux/cpu.h>
  19#include <linux/iscsi_boot_sysfs.h>
  20
  21#include <scsi/scsi_cmnd.h>
  22#include <scsi/scsi_device.h>
  23#include <scsi/scsi_eh.h>
  24#include <scsi/scsi_host.h>
  25#include <scsi/scsi.h>
  26
  27#include "qedi.h"
  28#include "qedi_gbl.h"
  29#include "qedi_iscsi.h"
  30
  31static uint qedi_qed_debug;
  32module_param(qedi_qed_debug, uint, 0644);
  33MODULE_PARM_DESC(qedi_qed_debug, " QED debug level 0 (default)");
  34
  35static uint qedi_fw_debug;
  36module_param(qedi_fw_debug, uint, 0644);
  37MODULE_PARM_DESC(qedi_fw_debug, " Firmware debug level 0(default) to 3");
  38
  39uint qedi_dbg_log = QEDI_LOG_WARN | QEDI_LOG_SCSI_TM;
  40module_param(qedi_dbg_log, uint, 0644);
  41MODULE_PARM_DESC(qedi_dbg_log, " Default debug level");
  42
  43uint qedi_io_tracing;
  44module_param(qedi_io_tracing, uint, 0644);
  45MODULE_PARM_DESC(qedi_io_tracing,
  46                 " Enable logging of SCSI requests/completions into trace buffer. (default off).");
  47
  48static uint qedi_ll2_buf_size = 0x400;
  49module_param(qedi_ll2_buf_size, uint, 0644);
  50MODULE_PARM_DESC(qedi_ll2_buf_size,
  51                 "parameter to set ping packet size, default - 0x400, Jumbo packets - 0x2400.");
  52
  53static uint qedi_flags_override;
  54module_param(qedi_flags_override, uint, 0644);
  55MODULE_PARM_DESC(qedi_flags_override, "Disable/Enable MFW error flags bits action.");
  56
  57const struct qed_iscsi_ops *qedi_ops;
  58static struct scsi_transport_template *qedi_scsi_transport;
  59static struct pci_driver qedi_pci_driver;
  60static DEFINE_PER_CPU(struct qedi_percpu_s, qedi_percpu);
  61static LIST_HEAD(qedi_udev_list);
  62/* Static function declaration */
  63static int qedi_alloc_global_queues(struct qedi_ctx *qedi);
  64static void qedi_free_global_queues(struct qedi_ctx *qedi);
  65static struct qedi_cmd *qedi_get_cmd_from_tid(struct qedi_ctx *qedi, u32 tid);
  66static void qedi_reset_uio_rings(struct qedi_uio_dev *udev);
  67static void qedi_ll2_free_skbs(struct qedi_ctx *qedi);
  68static struct nvm_iscsi_block *qedi_get_nvram_block(struct qedi_ctx *qedi);
  69static void qedi_recovery_handler(struct work_struct *work);
  70static void qedi_schedule_hw_err_handler(void *dev,
  71                                         enum qed_hw_err_type err_type);
  72
  73static int qedi_iscsi_event_cb(void *context, u8 fw_event_code, void *fw_handle)
  74{
  75        struct qedi_ctx *qedi;
  76        struct qedi_endpoint *qedi_ep;
  77        struct iscsi_eqe_data *data;
  78        int rval = 0;
  79
  80        if (!context || !fw_handle) {
  81                QEDI_ERR(NULL, "Recv event with ctx NULL\n");
  82                return -EINVAL;
  83        }
  84
  85        qedi = (struct qedi_ctx *)context;
  86        QEDI_INFO(&qedi->dbg_ctx, QEDI_LOG_INFO,
  87                  "Recv Event %d fw_handle %p\n", fw_event_code, fw_handle);
  88
  89        data = (struct iscsi_eqe_data *)fw_handle;
  90        QEDI_INFO(&qedi->dbg_ctx, QEDI_LOG_INFO,
  91                  "icid=0x%x conn_id=0x%x err-code=0x%x error-pdu-opcode-reserved=0x%x\n",
  92                   data->icid, data->conn_id, data->error_code,
  93                   data->error_pdu_opcode_reserved);
  94
  95        qedi_ep = qedi->ep_tbl[data->icid];
  96
  97        if (!qedi_ep) {
  98                QEDI_WARN(&qedi->dbg_ctx,
  99                          "Cannot process event, ep already disconnected, cid=0x%x\n",
 100                           data->icid);
 101                WARN_ON(1);
 102                return -ENODEV;
 103        }
 104
 105        switch (fw_event_code) {
 106        case ISCSI_EVENT_TYPE_ASYN_CONNECT_COMPLETE:
 107                if (qedi_ep->state == EP_STATE_OFLDCONN_START)
 108                        qedi_ep->state = EP_STATE_OFLDCONN_COMPL;
 109
 110                wake_up_interruptible(&qedi_ep->tcp_ofld_wait);
 111                break;
 112        case ISCSI_EVENT_TYPE_ASYN_TERMINATE_DONE:
 113                qedi_ep->state = EP_STATE_DISCONN_COMPL;
 114                wake_up_interruptible(&qedi_ep->tcp_ofld_wait);
 115                break;
 116        case ISCSI_EVENT_TYPE_ISCSI_CONN_ERROR:
 117                qedi_process_iscsi_error(qedi_ep, data);
 118                break;
 119        case ISCSI_EVENT_TYPE_ASYN_ABORT_RCVD:
 120        case ISCSI_EVENT_TYPE_ASYN_SYN_RCVD:
 121        case ISCSI_EVENT_TYPE_ASYN_MAX_RT_TIME:
 122        case ISCSI_EVENT_TYPE_ASYN_MAX_RT_CNT:
 123        case ISCSI_EVENT_TYPE_ASYN_MAX_KA_PROBES_CNT:
 124        case ISCSI_EVENT_TYPE_ASYN_FIN_WAIT2:
 125        case ISCSI_EVENT_TYPE_TCP_CONN_ERROR:
 126                qedi_process_tcp_error(qedi_ep, data);
 127                break;
 128        default:
 129                QEDI_ERR(&qedi->dbg_ctx, "Recv Unknown Event %u\n",
 130                         fw_event_code);
 131        }
 132
 133        return rval;
 134}
 135
 136static int qedi_uio_open(struct uio_info *uinfo, struct inode *inode)
 137{
 138        struct qedi_uio_dev *udev = uinfo->priv;
 139        struct qedi_ctx *qedi = udev->qedi;
 140
 141        if (!capable(CAP_NET_ADMIN))
 142                return -EPERM;
 143
 144        if (udev->uio_dev != -1)
 145                return -EBUSY;
 146
 147        rtnl_lock();
 148        udev->uio_dev = iminor(inode);
 149        qedi_reset_uio_rings(udev);
 150        set_bit(UIO_DEV_OPENED, &qedi->flags);
 151        rtnl_unlock();
 152
 153        return 0;
 154}
 155
 156static int qedi_uio_close(struct uio_info *uinfo, struct inode *inode)
 157{
 158        struct qedi_uio_dev *udev = uinfo->priv;
 159        struct qedi_ctx *qedi = udev->qedi;
 160
 161        udev->uio_dev = -1;
 162        clear_bit(UIO_DEV_OPENED, &qedi->flags);
 163        qedi_ll2_free_skbs(qedi);
 164        return 0;
 165}
 166
 167static void __qedi_free_uio_rings(struct qedi_uio_dev *udev)
 168{
 169        if (udev->uctrl) {
 170                free_page((unsigned long)udev->uctrl);
 171                udev->uctrl = NULL;
 172        }
 173
 174        if (udev->ll2_ring) {
 175                free_page((unsigned long)udev->ll2_ring);
 176                udev->ll2_ring = NULL;
 177        }
 178
 179        if (udev->ll2_buf) {
 180                free_pages((unsigned long)udev->ll2_buf, 2);
 181                udev->ll2_buf = NULL;
 182        }
 183}
 184
 185static void __qedi_free_uio(struct qedi_uio_dev *udev)
 186{
 187        uio_unregister_device(&udev->qedi_uinfo);
 188
 189        __qedi_free_uio_rings(udev);
 190
 191        pci_dev_put(udev->pdev);
 192        kfree(udev);
 193}
 194
 195static void qedi_free_uio(struct qedi_uio_dev *udev)
 196{
 197        if (!udev)
 198                return;
 199
 200        list_del_init(&udev->list);
 201        __qedi_free_uio(udev);
 202}
 203
 204static void qedi_reset_uio_rings(struct qedi_uio_dev *udev)
 205{
 206        struct qedi_ctx *qedi = NULL;
 207        struct qedi_uio_ctrl *uctrl = NULL;
 208
 209        qedi = udev->qedi;
 210        uctrl = udev->uctrl;
 211
 212        spin_lock_bh(&qedi->ll2_lock);
 213        uctrl->host_rx_cons = 0;
 214        uctrl->hw_rx_prod = 0;
 215        uctrl->hw_rx_bd_prod = 0;
 216        uctrl->host_rx_bd_cons = 0;
 217
 218        memset(udev->ll2_ring, 0, udev->ll2_ring_size);
 219        memset(udev->ll2_buf, 0, udev->ll2_buf_size);
 220        spin_unlock_bh(&qedi->ll2_lock);
 221}
 222
 223static int __qedi_alloc_uio_rings(struct qedi_uio_dev *udev)
 224{
 225        int rc = 0;
 226
 227        if (udev->ll2_ring || udev->ll2_buf)
 228                return rc;
 229
 230        /* Memory for control area.  */
 231        udev->uctrl = (void *)get_zeroed_page(GFP_KERNEL);
 232        if (!udev->uctrl)
 233                return -ENOMEM;
 234
 235        /* Allocating memory for LL2 ring  */
 236        udev->ll2_ring_size = QEDI_PAGE_SIZE;
 237        udev->ll2_ring = (void *)get_zeroed_page(GFP_KERNEL | __GFP_COMP);
 238        if (!udev->ll2_ring) {
 239                rc = -ENOMEM;
 240                goto exit_alloc_ring;
 241        }
 242
 243        /* Allocating memory for Tx/Rx pkt buffer */
 244        udev->ll2_buf_size = TX_RX_RING * qedi_ll2_buf_size;
 245        udev->ll2_buf_size = QEDI_PAGE_ALIGN(udev->ll2_buf_size);
 246        udev->ll2_buf = (void *)__get_free_pages(GFP_KERNEL | __GFP_COMP |
 247                                                 __GFP_ZERO, 2);
 248        if (!udev->ll2_buf) {
 249                rc = -ENOMEM;
 250                goto exit_alloc_buf;
 251        }
 252        return rc;
 253
 254exit_alloc_buf:
 255        free_page((unsigned long)udev->ll2_ring);
 256        udev->ll2_ring = NULL;
 257exit_alloc_ring:
 258        return rc;
 259}
 260
 261static int qedi_alloc_uio_rings(struct qedi_ctx *qedi)
 262{
 263        struct qedi_uio_dev *udev = NULL;
 264        int rc = 0;
 265
 266        list_for_each_entry(udev, &qedi_udev_list, list) {
 267                if (udev->pdev == qedi->pdev) {
 268                        udev->qedi = qedi;
 269                        if (__qedi_alloc_uio_rings(udev)) {
 270                                udev->qedi = NULL;
 271                                return -ENOMEM;
 272                        }
 273                        qedi->udev = udev;
 274                        return 0;
 275                }
 276        }
 277
 278        udev = kzalloc(sizeof(*udev), GFP_KERNEL);
 279        if (!udev)
 280                goto err_udev;
 281
 282        udev->uio_dev = -1;
 283
 284        udev->qedi = qedi;
 285        udev->pdev = qedi->pdev;
 286
 287        rc = __qedi_alloc_uio_rings(udev);
 288        if (rc)
 289                goto err_uctrl;
 290
 291        list_add(&udev->list, &qedi_udev_list);
 292
 293        pci_dev_get(udev->pdev);
 294        qedi->udev = udev;
 295
 296        udev->tx_pkt = udev->ll2_buf;
 297        udev->rx_pkt = udev->ll2_buf + qedi_ll2_buf_size;
 298        return 0;
 299
 300 err_uctrl:
 301        kfree(udev);
 302 err_udev:
 303        return -ENOMEM;
 304}
 305
 306static int qedi_init_uio(struct qedi_ctx *qedi)
 307{
 308        struct qedi_uio_dev *udev = qedi->udev;
 309        struct uio_info *uinfo;
 310        int ret = 0;
 311
 312        if (!udev)
 313                return -ENOMEM;
 314
 315        uinfo = &udev->qedi_uinfo;
 316
 317        uinfo->mem[0].addr = (unsigned long)udev->uctrl;
 318        uinfo->mem[0].size = sizeof(struct qedi_uio_ctrl);
 319        uinfo->mem[0].memtype = UIO_MEM_LOGICAL;
 320
 321        uinfo->mem[1].addr = (unsigned long)udev->ll2_ring;
 322        uinfo->mem[1].size = udev->ll2_ring_size;
 323        uinfo->mem[1].memtype = UIO_MEM_LOGICAL;
 324
 325        uinfo->mem[2].addr = (unsigned long)udev->ll2_buf;
 326        uinfo->mem[2].size = udev->ll2_buf_size;
 327        uinfo->mem[2].memtype = UIO_MEM_LOGICAL;
 328
 329        uinfo->name = "qedi_uio";
 330        uinfo->version = QEDI_MODULE_VERSION;
 331        uinfo->irq = UIO_IRQ_CUSTOM;
 332
 333        uinfo->open = qedi_uio_open;
 334        uinfo->release = qedi_uio_close;
 335
 336        if (udev->uio_dev == -1) {
 337                if (!uinfo->priv) {
 338                        uinfo->priv = udev;
 339
 340                        ret = uio_register_device(&udev->pdev->dev, uinfo);
 341                        if (ret) {
 342                                QEDI_ERR(&qedi->dbg_ctx,
 343                                         "UIO registration failed\n");
 344                        }
 345                }
 346        }
 347
 348        return ret;
 349}
 350
 351static int qedi_alloc_and_init_sb(struct qedi_ctx *qedi,
 352                                  struct qed_sb_info *sb_info, u16 sb_id)
 353{
 354        struct status_block_e4 *sb_virt;
 355        dma_addr_t sb_phys;
 356        int ret;
 357
 358        sb_virt = dma_alloc_coherent(&qedi->pdev->dev,
 359                                     sizeof(struct status_block_e4), &sb_phys,
 360                                     GFP_KERNEL);
 361        if (!sb_virt) {
 362                QEDI_ERR(&qedi->dbg_ctx,
 363                         "Status block allocation failed for id = %d.\n",
 364                          sb_id);
 365                return -ENOMEM;
 366        }
 367
 368        ret = qedi_ops->common->sb_init(qedi->cdev, sb_info, sb_virt, sb_phys,
 369                                       sb_id, QED_SB_TYPE_STORAGE);
 370        if (ret) {
 371                QEDI_ERR(&qedi->dbg_ctx,
 372                         "Status block initialization failed for id = %d.\n",
 373                          sb_id);
 374                return ret;
 375        }
 376
 377        return 0;
 378}
 379
 380static void qedi_free_sb(struct qedi_ctx *qedi)
 381{
 382        struct qed_sb_info *sb_info;
 383        int id;
 384
 385        for (id = 0; id < MIN_NUM_CPUS_MSIX(qedi); id++) {
 386                sb_info = &qedi->sb_array[id];
 387                if (sb_info->sb_virt)
 388                        dma_free_coherent(&qedi->pdev->dev,
 389                                          sizeof(*sb_info->sb_virt),
 390                                          (void *)sb_info->sb_virt,
 391                                          sb_info->sb_phys);
 392        }
 393}
 394
 395static void qedi_free_fp(struct qedi_ctx *qedi)
 396{
 397        kfree(qedi->fp_array);
 398        kfree(qedi->sb_array);
 399}
 400
 401static void qedi_destroy_fp(struct qedi_ctx *qedi)
 402{
 403        qedi_free_sb(qedi);
 404        qedi_free_fp(qedi);
 405}
 406
 407static int qedi_alloc_fp(struct qedi_ctx *qedi)
 408{
 409        int ret = 0;
 410
 411        qedi->fp_array = kcalloc(MIN_NUM_CPUS_MSIX(qedi),
 412                                 sizeof(struct qedi_fastpath), GFP_KERNEL);
 413        if (!qedi->fp_array) {
 414                QEDI_ERR(&qedi->dbg_ctx,
 415                         "fastpath fp array allocation failed.\n");
 416                return -ENOMEM;
 417        }
 418
 419        qedi->sb_array = kcalloc(MIN_NUM_CPUS_MSIX(qedi),
 420                                 sizeof(struct qed_sb_info), GFP_KERNEL);
 421        if (!qedi->sb_array) {
 422                QEDI_ERR(&qedi->dbg_ctx,
 423                         "fastpath sb array allocation failed.\n");
 424                ret = -ENOMEM;
 425                goto free_fp;
 426        }
 427
 428        return ret;
 429
 430free_fp:
 431        qedi_free_fp(qedi);
 432        return ret;
 433}
 434
 435static void qedi_int_fp(struct qedi_ctx *qedi)
 436{
 437        struct qedi_fastpath *fp;
 438        int id;
 439
 440        memset(qedi->fp_array, 0, MIN_NUM_CPUS_MSIX(qedi) *
 441               sizeof(*qedi->fp_array));
 442        memset(qedi->sb_array, 0, MIN_NUM_CPUS_MSIX(qedi) *
 443               sizeof(*qedi->sb_array));
 444
 445        for (id = 0; id < MIN_NUM_CPUS_MSIX(qedi); id++) {
 446                fp = &qedi->fp_array[id];
 447                fp->sb_info = &qedi->sb_array[id];
 448                fp->sb_id = id;
 449                fp->qedi = qedi;
 450                snprintf(fp->name, sizeof(fp->name), "%s-fp-%d",
 451                         "qedi", id);
 452
 453                /* fp_array[i] ---- irq cookie
 454                 * So init data which is needed in int ctx
 455                 */
 456        }
 457}
 458
 459static int qedi_prepare_fp(struct qedi_ctx *qedi)
 460{
 461        struct qedi_fastpath *fp;
 462        int id, ret = 0;
 463
 464        ret = qedi_alloc_fp(qedi);
 465        if (ret)
 466                goto err;
 467
 468        qedi_int_fp(qedi);
 469
 470        for (id = 0; id < MIN_NUM_CPUS_MSIX(qedi); id++) {
 471                fp = &qedi->fp_array[id];
 472                ret = qedi_alloc_and_init_sb(qedi, fp->sb_info, fp->sb_id);
 473                if (ret) {
 474                        QEDI_ERR(&qedi->dbg_ctx,
 475                                 "SB allocation and initialization failed.\n");
 476                        ret = -EIO;
 477                        goto err_init;
 478                }
 479        }
 480
 481        return 0;
 482
 483err_init:
 484        qedi_free_sb(qedi);
 485        qedi_free_fp(qedi);
 486err:
 487        return ret;
 488}
 489
 490static int qedi_setup_cid_que(struct qedi_ctx *qedi)
 491{
 492        int i;
 493
 494        qedi->cid_que.cid_que_base = kmalloc_array(qedi->max_active_conns,
 495                                                   sizeof(u32), GFP_KERNEL);
 496        if (!qedi->cid_que.cid_que_base)
 497                return -ENOMEM;
 498
 499        qedi->cid_que.conn_cid_tbl = kmalloc_array(qedi->max_active_conns,
 500                                                   sizeof(struct qedi_conn *),
 501                                                   GFP_KERNEL);
 502        if (!qedi->cid_que.conn_cid_tbl) {
 503                kfree(qedi->cid_que.cid_que_base);
 504                qedi->cid_que.cid_que_base = NULL;
 505                return -ENOMEM;
 506        }
 507
 508        qedi->cid_que.cid_que = (u32 *)qedi->cid_que.cid_que_base;
 509        qedi->cid_que.cid_q_prod_idx = 0;
 510        qedi->cid_que.cid_q_cons_idx = 0;
 511        qedi->cid_que.cid_q_max_idx = qedi->max_active_conns;
 512        qedi->cid_que.cid_free_cnt = qedi->max_active_conns;
 513
 514        for (i = 0; i < qedi->max_active_conns; i++) {
 515                qedi->cid_que.cid_que[i] = i;
 516                qedi->cid_que.conn_cid_tbl[i] = NULL;
 517        }
 518
 519        return 0;
 520}
 521
 522static void qedi_release_cid_que(struct qedi_ctx *qedi)
 523{
 524        kfree(qedi->cid_que.cid_que_base);
 525        qedi->cid_que.cid_que_base = NULL;
 526
 527        kfree(qedi->cid_que.conn_cid_tbl);
 528        qedi->cid_que.conn_cid_tbl = NULL;
 529}
 530
 531static int qedi_init_id_tbl(struct qedi_portid_tbl *id_tbl, u16 size,
 532                            u16 start_id, u16 next)
 533{
 534        id_tbl->start = start_id;
 535        id_tbl->max = size;
 536        id_tbl->next = next;
 537        spin_lock_init(&id_tbl->lock);
 538        id_tbl->table = kcalloc(BITS_TO_LONGS(size), sizeof(long), GFP_KERNEL);
 539        if (!id_tbl->table)
 540                return -ENOMEM;
 541
 542        return 0;
 543}
 544
 545static void qedi_free_id_tbl(struct qedi_portid_tbl *id_tbl)
 546{
 547        kfree(id_tbl->table);
 548        id_tbl->table = NULL;
 549}
 550
 551int qedi_alloc_id(struct qedi_portid_tbl *id_tbl, u16 id)
 552{
 553        int ret = -1;
 554
 555        id -= id_tbl->start;
 556        if (id >= id_tbl->max)
 557                return ret;
 558
 559        spin_lock(&id_tbl->lock);
 560        if (!test_bit(id, id_tbl->table)) {
 561                set_bit(id, id_tbl->table);
 562                ret = 0;
 563        }
 564        spin_unlock(&id_tbl->lock);
 565        return ret;
 566}
 567
 568u16 qedi_alloc_new_id(struct qedi_portid_tbl *id_tbl)
 569{
 570        u16 id;
 571
 572        spin_lock(&id_tbl->lock);
 573        id = find_next_zero_bit(id_tbl->table, id_tbl->max, id_tbl->next);
 574        if (id >= id_tbl->max) {
 575                id = QEDI_LOCAL_PORT_INVALID;
 576                if (id_tbl->next != 0) {
 577                        id = find_first_zero_bit(id_tbl->table, id_tbl->next);
 578                        if (id >= id_tbl->next)
 579                                id = QEDI_LOCAL_PORT_INVALID;
 580                }
 581        }
 582
 583        if (id < id_tbl->max) {
 584                set_bit(id, id_tbl->table);
 585                id_tbl->next = (id + 1) & (id_tbl->max - 1);
 586                id += id_tbl->start;
 587        }
 588
 589        spin_unlock(&id_tbl->lock);
 590
 591        return id;
 592}
 593
 594void qedi_free_id(struct qedi_portid_tbl *id_tbl, u16 id)
 595{
 596        if (id == QEDI_LOCAL_PORT_INVALID)
 597                return;
 598
 599        id -= id_tbl->start;
 600        if (id >= id_tbl->max)
 601                return;
 602
 603        clear_bit(id, id_tbl->table);
 604}
 605
 606static void qedi_cm_free_mem(struct qedi_ctx *qedi)
 607{
 608        kfree(qedi->ep_tbl);
 609        qedi->ep_tbl = NULL;
 610        qedi_free_id_tbl(&qedi->lcl_port_tbl);
 611}
 612
 613static int qedi_cm_alloc_mem(struct qedi_ctx *qedi)
 614{
 615        u16 port_id;
 616
 617        qedi->ep_tbl = kzalloc((qedi->max_active_conns *
 618                                sizeof(struct qedi_endpoint *)), GFP_KERNEL);
 619        if (!qedi->ep_tbl)
 620                return -ENOMEM;
 621        port_id = prandom_u32() % QEDI_LOCAL_PORT_RANGE;
 622        if (qedi_init_id_tbl(&qedi->lcl_port_tbl, QEDI_LOCAL_PORT_RANGE,
 623                             QEDI_LOCAL_PORT_MIN, port_id)) {
 624                qedi_cm_free_mem(qedi);
 625                return -ENOMEM;
 626        }
 627
 628        return 0;
 629}
 630
 631static struct qedi_ctx *qedi_host_alloc(struct pci_dev *pdev)
 632{
 633        struct Scsi_Host *shost;
 634        struct qedi_ctx *qedi = NULL;
 635
 636        shost = iscsi_host_alloc(&qedi_host_template,
 637                                 sizeof(struct qedi_ctx), 0);
 638        if (!shost) {
 639                QEDI_ERR(NULL, "Could not allocate shost\n");
 640                goto exit_setup_shost;
 641        }
 642
 643        shost->max_id = QEDI_MAX_ISCSI_CONNS_PER_HBA - 1;
 644        shost->max_channel = 0;
 645        shost->max_lun = ~0;
 646        shost->max_cmd_len = 16;
 647        shost->transportt = qedi_scsi_transport;
 648
 649        qedi = iscsi_host_priv(shost);
 650        memset(qedi, 0, sizeof(*qedi));
 651        qedi->shost = shost;
 652        qedi->dbg_ctx.host_no = shost->host_no;
 653        qedi->pdev = pdev;
 654        qedi->dbg_ctx.pdev = pdev;
 655        qedi->max_active_conns = ISCSI_MAX_SESS_PER_HBA;
 656        qedi->max_sqes = QEDI_SQ_SIZE;
 657
 658        shost->nr_hw_queues = MIN_NUM_CPUS_MSIX(qedi);
 659
 660        pci_set_drvdata(pdev, qedi);
 661
 662exit_setup_shost:
 663        return qedi;
 664}
 665
 666static int qedi_ll2_rx(void *cookie, struct sk_buff *skb, u32 arg1, u32 arg2)
 667{
 668        struct qedi_ctx *qedi = (struct qedi_ctx *)cookie;
 669        struct skb_work_list *work;
 670        struct ethhdr *eh;
 671
 672        if (!qedi) {
 673                QEDI_ERR(NULL, "qedi is NULL\n");
 674                return -1;
 675        }
 676
 677        if (!test_bit(UIO_DEV_OPENED, &qedi->flags)) {
 678                QEDI_INFO(&qedi->dbg_ctx, QEDI_LOG_UIO,
 679                          "UIO DEV is not opened\n");
 680                kfree_skb(skb);
 681                return 0;
 682        }
 683
 684        eh = (struct ethhdr *)skb->data;
 685        /* Undo VLAN encapsulation */
 686        if (eh->h_proto == htons(ETH_P_8021Q)) {
 687                memmove((u8 *)eh + VLAN_HLEN, eh, ETH_ALEN * 2);
 688                eh = (struct ethhdr *)skb_pull(skb, VLAN_HLEN);
 689                skb_reset_mac_header(skb);
 690        }
 691
 692        /* Filter out non FIP/FCoE frames here to free them faster */
 693        if (eh->h_proto != htons(ETH_P_ARP) &&
 694            eh->h_proto != htons(ETH_P_IP) &&
 695            eh->h_proto != htons(ETH_P_IPV6)) {
 696                QEDI_INFO(&qedi->dbg_ctx, QEDI_LOG_LL2,
 697                          "Dropping frame ethertype [0x%x] len [0x%x].\n",
 698                          eh->h_proto, skb->len);
 699                kfree_skb(skb);
 700                return 0;
 701        }
 702
 703        QEDI_INFO(&qedi->dbg_ctx, QEDI_LOG_LL2,
 704                  "Allowed frame ethertype [0x%x] len [0x%x].\n",
 705                  eh->h_proto, skb->len);
 706
 707        work = kzalloc(sizeof(*work), GFP_ATOMIC);
 708        if (!work) {
 709                QEDI_WARN(&qedi->dbg_ctx,
 710                          "Could not allocate work so dropping frame.\n");
 711                kfree_skb(skb);
 712                return 0;
 713        }
 714
 715        INIT_LIST_HEAD(&work->list);
 716        work->skb = skb;
 717
 718        if (skb_vlan_tag_present(skb))
 719                work->vlan_id = skb_vlan_tag_get(skb);
 720
 721        if (work->vlan_id)
 722                __vlan_insert_tag(work->skb, htons(ETH_P_8021Q), work->vlan_id);
 723
 724        spin_lock_bh(&qedi->ll2_lock);
 725        list_add_tail(&work->list, &qedi->ll2_skb_list);
 726        spin_unlock_bh(&qedi->ll2_lock);
 727
 728        wake_up_process(qedi->ll2_recv_thread);
 729
 730        return 0;
 731}
 732
 733/* map this skb to iscsiuio mmaped region */
 734static int qedi_ll2_process_skb(struct qedi_ctx *qedi, struct sk_buff *skb,
 735                                u16 vlan_id)
 736{
 737        struct qedi_uio_dev *udev = NULL;
 738        struct qedi_uio_ctrl *uctrl = NULL;
 739        struct qedi_rx_bd rxbd;
 740        struct qedi_rx_bd *p_rxbd;
 741        u32 rx_bd_prod;
 742        void *pkt;
 743        int len = 0;
 744        u32 prod;
 745
 746        if (!qedi) {
 747                QEDI_ERR(NULL, "qedi is NULL\n");
 748                return -1;
 749        }
 750
 751        udev = qedi->udev;
 752        uctrl = udev->uctrl;
 753
 754        ++uctrl->hw_rx_prod_cnt;
 755        prod = (uctrl->hw_rx_prod + 1) % RX_RING;
 756
 757        pkt = udev->rx_pkt + (prod * qedi_ll2_buf_size);
 758        len = min_t(u32, skb->len, (u32)qedi_ll2_buf_size);
 759        memcpy(pkt, skb->data, len);
 760
 761        memset(&rxbd, 0, sizeof(rxbd));
 762        rxbd.rx_pkt_index = prod;
 763        rxbd.rx_pkt_len = len;
 764        rxbd.vlan_id = vlan_id;
 765
 766        uctrl->hw_rx_bd_prod = (uctrl->hw_rx_bd_prod + 1) % QEDI_NUM_RX_BD;
 767        rx_bd_prod = uctrl->hw_rx_bd_prod;
 768        p_rxbd = (struct qedi_rx_bd *)udev->ll2_ring;
 769        p_rxbd += rx_bd_prod;
 770
 771        memcpy(p_rxbd, &rxbd, sizeof(rxbd));
 772
 773        QEDI_INFO(&qedi->dbg_ctx, QEDI_LOG_LL2,
 774                  "hw_rx_prod [%d] prod [%d] hw_rx_bd_prod [%d] rx_pkt_idx [%d] rx_len [%d].\n",
 775                  uctrl->hw_rx_prod, prod, uctrl->hw_rx_bd_prod,
 776                  rxbd.rx_pkt_index, rxbd.rx_pkt_len);
 777        QEDI_INFO(&qedi->dbg_ctx, QEDI_LOG_LL2,
 778                  "host_rx_cons [%d] hw_rx_bd_cons [%d].\n",
 779                  uctrl->host_rx_cons, uctrl->host_rx_bd_cons);
 780
 781        uctrl->hw_rx_prod = prod;
 782
 783        /* notify the iscsiuio about new packet */
 784        uio_event_notify(&udev->qedi_uinfo);
 785
 786        return 0;
 787}
 788
 789static void qedi_ll2_free_skbs(struct qedi_ctx *qedi)
 790{
 791        struct skb_work_list *work, *work_tmp;
 792
 793        spin_lock_bh(&qedi->ll2_lock);
 794        list_for_each_entry_safe(work, work_tmp, &qedi->ll2_skb_list, list) {
 795                list_del(&work->list);
 796                kfree_skb(work->skb);
 797                kfree(work);
 798        }
 799        spin_unlock_bh(&qedi->ll2_lock);
 800}
 801
 802static int qedi_ll2_recv_thread(void *arg)
 803{
 804        struct qedi_ctx *qedi = (struct qedi_ctx *)arg;
 805        struct skb_work_list *work, *work_tmp;
 806
 807        set_user_nice(current, -20);
 808
 809        while (!kthread_should_stop()) {
 810                spin_lock_bh(&qedi->ll2_lock);
 811                list_for_each_entry_safe(work, work_tmp, &qedi->ll2_skb_list,
 812                                         list) {
 813                        list_del(&work->list);
 814                        qedi_ll2_process_skb(qedi, work->skb, work->vlan_id);
 815                        kfree_skb(work->skb);
 816                        kfree(work);
 817                }
 818                set_current_state(TASK_INTERRUPTIBLE);
 819                spin_unlock_bh(&qedi->ll2_lock);
 820                schedule();
 821        }
 822
 823        __set_current_state(TASK_RUNNING);
 824        return 0;
 825}
 826
 827static int qedi_set_iscsi_pf_param(struct qedi_ctx *qedi)
 828{
 829        u8 num_sq_pages;
 830        u32 log_page_size;
 831        int rval = 0;
 832
 833
 834        num_sq_pages = (MAX_OUTSTANDING_TASKS_PER_CON * 8) / QEDI_PAGE_SIZE;
 835
 836        qedi->num_queues = MIN_NUM_CPUS_MSIX(qedi);
 837
 838        QEDI_INFO(&qedi->dbg_ctx, QEDI_LOG_INFO,
 839                  "Number of CQ count is %d\n", qedi->num_queues);
 840
 841        memset(&qedi->pf_params.iscsi_pf_params, 0,
 842               sizeof(qedi->pf_params.iscsi_pf_params));
 843
 844        qedi->p_cpuq = dma_alloc_coherent(&qedi->pdev->dev,
 845                        qedi->num_queues * sizeof(struct qedi_glbl_q_params),
 846                        &qedi->hw_p_cpuq, GFP_KERNEL);
 847        if (!qedi->p_cpuq) {
 848                QEDI_ERR(&qedi->dbg_ctx, "dma_alloc_coherent fail\n");
 849                rval = -1;
 850                goto err_alloc_mem;
 851        }
 852
 853        rval = qedi_alloc_global_queues(qedi);
 854        if (rval) {
 855                QEDI_ERR(&qedi->dbg_ctx, "Global queue allocation failed.\n");
 856                rval = -1;
 857                goto err_alloc_mem;
 858        }
 859
 860        qedi->pf_params.iscsi_pf_params.num_cons = QEDI_MAX_ISCSI_CONNS_PER_HBA;
 861        qedi->pf_params.iscsi_pf_params.num_tasks = QEDI_MAX_ISCSI_TASK;
 862        qedi->pf_params.iscsi_pf_params.half_way_close_timeout = 10;
 863        qedi->pf_params.iscsi_pf_params.num_sq_pages_in_ring = num_sq_pages;
 864        qedi->pf_params.iscsi_pf_params.num_r2tq_pages_in_ring = num_sq_pages;
 865        qedi->pf_params.iscsi_pf_params.num_uhq_pages_in_ring = num_sq_pages;
 866        qedi->pf_params.iscsi_pf_params.num_queues = qedi->num_queues;
 867        qedi->pf_params.iscsi_pf_params.debug_mode = qedi_fw_debug;
 868        qedi->pf_params.iscsi_pf_params.two_msl_timer = 4000;
 869        qedi->pf_params.iscsi_pf_params.max_fin_rt = 2;
 870
 871        for (log_page_size = 0 ; log_page_size < 32 ; log_page_size++) {
 872                if ((1 << log_page_size) == QEDI_PAGE_SIZE)
 873                        break;
 874        }
 875        qedi->pf_params.iscsi_pf_params.log_page_size = log_page_size;
 876
 877        qedi->pf_params.iscsi_pf_params.glbl_q_params_addr =
 878                                                           (u64)qedi->hw_p_cpuq;
 879
 880        /* RQ BDQ initializations.
 881         * rq_num_entries: suggested value for Initiator is 16 (4KB RQ)
 882         * rqe_log_size: 8 for 256B RQE
 883         */
 884        qedi->pf_params.iscsi_pf_params.rqe_log_size = 8;
 885        /* BDQ address and size */
 886        qedi->pf_params.iscsi_pf_params.bdq_pbl_base_addr[BDQ_ID_RQ] =
 887                                                        qedi->bdq_pbl_list_dma;
 888        qedi->pf_params.iscsi_pf_params.bdq_pbl_num_entries[BDQ_ID_RQ] =
 889                                                qedi->bdq_pbl_list_num_entries;
 890        qedi->pf_params.iscsi_pf_params.rq_buffer_size = QEDI_BDQ_BUF_SIZE;
 891
 892        /* cq_num_entries: num_tasks + rq_num_entries */
 893        qedi->pf_params.iscsi_pf_params.cq_num_entries = 2048;
 894
 895        qedi->pf_params.iscsi_pf_params.gl_rq_pi = QEDI_PROTO_CQ_PROD_IDX;
 896        qedi->pf_params.iscsi_pf_params.gl_cmd_pi = 1;
 897
 898err_alloc_mem:
 899        return rval;
 900}
 901
 902/* Free DMA coherent memory for array of queue pointers we pass to qed */
 903static void qedi_free_iscsi_pf_param(struct qedi_ctx *qedi)
 904{
 905        size_t size = 0;
 906
 907        if (qedi->p_cpuq) {
 908                size = qedi->num_queues * sizeof(struct qedi_glbl_q_params);
 909                dma_free_coherent(&qedi->pdev->dev, size, qedi->p_cpuq,
 910                                    qedi->hw_p_cpuq);
 911        }
 912
 913        qedi_free_global_queues(qedi);
 914
 915        kfree(qedi->global_queues);
 916}
 917
 918static void qedi_get_boot_tgt_info(struct nvm_iscsi_block *block,
 919                                   struct qedi_boot_target *tgt, u8 index)
 920{
 921        u32 ipv6_en;
 922
 923        ipv6_en = !!(block->generic.ctrl_flags &
 924                     NVM_ISCSI_CFG_GEN_IPV6_ENABLED);
 925
 926        snprintf(tgt->iscsi_name, sizeof(tgt->iscsi_name), "%s",
 927                 block->target[index].target_name.byte);
 928
 929        tgt->ipv6_en = ipv6_en;
 930
 931        if (ipv6_en)
 932                snprintf(tgt->ip_addr, IPV6_LEN, "%pI6\n",
 933                         block->target[index].ipv6_addr.byte);
 934        else
 935                snprintf(tgt->ip_addr, IPV4_LEN, "%pI4\n",
 936                         block->target[index].ipv4_addr.byte);
 937}
 938
 939static int qedi_find_boot_info(struct qedi_ctx *qedi,
 940                               struct qed_mfw_tlv_iscsi *iscsi,
 941                               struct nvm_iscsi_block *block)
 942{
 943        struct qedi_boot_target *pri_tgt = NULL, *sec_tgt = NULL;
 944        u32 pri_ctrl_flags = 0, sec_ctrl_flags = 0, found = 0;
 945        struct iscsi_cls_session *cls_sess;
 946        struct iscsi_cls_conn *cls_conn;
 947        struct qedi_conn *qedi_conn;
 948        struct iscsi_session *sess;
 949        struct iscsi_conn *conn;
 950        char ep_ip_addr[64];
 951        int i, ret = 0;
 952
 953        pri_ctrl_flags = !!(block->target[0].ctrl_flags &
 954                                        NVM_ISCSI_CFG_TARGET_ENABLED);
 955        if (pri_ctrl_flags) {
 956                pri_tgt = kzalloc(sizeof(*pri_tgt), GFP_KERNEL);
 957                if (!pri_tgt)
 958                        return -1;
 959                qedi_get_boot_tgt_info(block, pri_tgt, 0);
 960        }
 961
 962        sec_ctrl_flags = !!(block->target[1].ctrl_flags &
 963                                        NVM_ISCSI_CFG_TARGET_ENABLED);
 964        if (sec_ctrl_flags) {
 965                sec_tgt = kzalloc(sizeof(*sec_tgt), GFP_KERNEL);
 966                if (!sec_tgt) {
 967                        ret = -1;
 968                        goto free_tgt;
 969                }
 970                qedi_get_boot_tgt_info(block, sec_tgt, 1);
 971        }
 972
 973        for (i = 0; i < qedi->max_active_conns; i++) {
 974                qedi_conn = qedi_get_conn_from_id(qedi, i);
 975                if (!qedi_conn)
 976                        continue;
 977
 978                if (qedi_conn->ep->ip_type == TCP_IPV4)
 979                        snprintf(ep_ip_addr, IPV4_LEN, "%pI4\n",
 980                                 qedi_conn->ep->dst_addr);
 981                else
 982                        snprintf(ep_ip_addr, IPV6_LEN, "%pI6\n",
 983                                 qedi_conn->ep->dst_addr);
 984
 985                cls_conn = qedi_conn->cls_conn;
 986                conn = cls_conn->dd_data;
 987                cls_sess = iscsi_conn_to_session(cls_conn);
 988                sess = cls_sess->dd_data;
 989
 990                if (!iscsi_is_session_online(cls_sess))
 991                        continue;
 992
 993                if (!sess->targetname)
 994                        continue;
 995
 996                if (pri_ctrl_flags) {
 997                        if (!strcmp(pri_tgt->iscsi_name, sess->targetname) &&
 998                            !strcmp(pri_tgt->ip_addr, ep_ip_addr)) {
 999                                found = 1;
1000                                break;
1001                        }
1002                }
1003
1004                if (sec_ctrl_flags) {
1005                        if (!strcmp(sec_tgt->iscsi_name, sess->targetname) &&
1006                            !strcmp(sec_tgt->ip_addr, ep_ip_addr)) {
1007                                found = 1;
1008                                break;
1009                        }
1010                }
1011        }
1012
1013        if (found) {
1014                if (conn->hdrdgst_en) {
1015                        iscsi->header_digest_set = true;
1016                        iscsi->header_digest = 1;
1017                }
1018
1019                if (conn->datadgst_en) {
1020                        iscsi->data_digest_set = true;
1021                        iscsi->data_digest = 1;
1022                }
1023                iscsi->boot_taget_portal_set = true;
1024                iscsi->boot_taget_portal = sess->tpgt;
1025
1026        } else {
1027                ret = -1;
1028        }
1029
1030        if (sec_ctrl_flags)
1031                kfree(sec_tgt);
1032free_tgt:
1033        if (pri_ctrl_flags)
1034                kfree(pri_tgt);
1035
1036        return ret;
1037}
1038
1039static void qedi_get_generic_tlv_data(void *dev, struct qed_generic_tlvs *data)
1040{
1041        struct qedi_ctx *qedi;
1042
1043        if (!dev) {
1044                QEDI_INFO(NULL, QEDI_LOG_EVT,
1045                          "dev is NULL so ignoring get_generic_tlv_data request.\n");
1046                return;
1047        }
1048        qedi = (struct qedi_ctx *)dev;
1049
1050        memset(data, 0, sizeof(struct qed_generic_tlvs));
1051        ether_addr_copy(data->mac[0], qedi->mac);
1052}
1053
1054/*
1055 * Protocol TLV handler
1056 */
1057static void qedi_get_protocol_tlv_data(void *dev, void *data)
1058{
1059        struct qed_mfw_tlv_iscsi *iscsi = data;
1060        struct qed_iscsi_stats *fw_iscsi_stats;
1061        struct nvm_iscsi_block *block = NULL;
1062        u32 chap_en = 0, mchap_en = 0;
1063        struct qedi_ctx *qedi = dev;
1064        int rval = 0;
1065
1066        fw_iscsi_stats = kmalloc(sizeof(*fw_iscsi_stats), GFP_KERNEL);
1067        if (!fw_iscsi_stats) {
1068                QEDI_ERR(&qedi->dbg_ctx,
1069                         "Could not allocate memory for fw_iscsi_stats.\n");
1070                goto exit_get_data;
1071        }
1072
1073        mutex_lock(&qedi->stats_lock);
1074        /* Query firmware for offload stats */
1075        qedi_ops->get_stats(qedi->cdev, fw_iscsi_stats);
1076        mutex_unlock(&qedi->stats_lock);
1077
1078        iscsi->rx_frames_set = true;
1079        iscsi->rx_frames = fw_iscsi_stats->iscsi_rx_packet_cnt;
1080        iscsi->rx_bytes_set = true;
1081        iscsi->rx_bytes = fw_iscsi_stats->iscsi_rx_bytes_cnt;
1082        iscsi->tx_frames_set = true;
1083        iscsi->tx_frames = fw_iscsi_stats->iscsi_tx_packet_cnt;
1084        iscsi->tx_bytes_set = true;
1085        iscsi->tx_bytes = fw_iscsi_stats->iscsi_tx_bytes_cnt;
1086        iscsi->frame_size_set = true;
1087        iscsi->frame_size = qedi->ll2_mtu;
1088        block = qedi_get_nvram_block(qedi);
1089        if (block) {
1090                chap_en = !!(block->generic.ctrl_flags &
1091                             NVM_ISCSI_CFG_GEN_CHAP_ENABLED);
1092                mchap_en = !!(block->generic.ctrl_flags &
1093                              NVM_ISCSI_CFG_GEN_CHAP_MUTUAL_ENABLED);
1094
1095                iscsi->auth_method_set = (chap_en || mchap_en) ? true : false;
1096                iscsi->auth_method = 1;
1097                if (chap_en)
1098                        iscsi->auth_method = 2;
1099                if (mchap_en)
1100                        iscsi->auth_method = 3;
1101
1102                iscsi->tx_desc_size_set = true;
1103                iscsi->tx_desc_size = QEDI_SQ_SIZE;
1104                iscsi->rx_desc_size_set = true;
1105                iscsi->rx_desc_size = QEDI_CQ_SIZE;
1106
1107                /* tpgt, hdr digest, data digest */
1108                rval = qedi_find_boot_info(qedi, iscsi, block);
1109                if (rval)
1110                        QEDI_INFO(&qedi->dbg_ctx, QEDI_LOG_INFO,
1111                                  "Boot target not set");
1112        }
1113
1114        kfree(fw_iscsi_stats);
1115exit_get_data:
1116        return;
1117}
1118
1119void qedi_schedule_hw_err_handler(void *dev,
1120                                  enum qed_hw_err_type err_type)
1121{
1122        struct qedi_ctx *qedi = (struct qedi_ctx *)dev;
1123        unsigned long override_flags = qedi_flags_override;
1124
1125        if (override_flags && test_bit(QEDI_ERR_OVERRIDE_EN, &override_flags))
1126                qedi->qedi_err_flags = qedi_flags_override;
1127
1128        QEDI_INFO(&qedi->dbg_ctx, QEDI_LOG_INFO,
1129                  "HW error handler scheduled, err=%d err_flags=0x%x\n",
1130                  err_type, qedi->qedi_err_flags);
1131
1132        switch (err_type) {
1133        case QED_HW_ERR_FAN_FAIL:
1134                schedule_delayed_work(&qedi->board_disable_work, 0);
1135                break;
1136        case QED_HW_ERR_MFW_RESP_FAIL:
1137        case QED_HW_ERR_HW_ATTN:
1138        case QED_HW_ERR_DMAE_FAIL:
1139        case QED_HW_ERR_RAMROD_FAIL:
1140        case QED_HW_ERR_FW_ASSERT:
1141                /* Prevent HW attentions from being reasserted */
1142                if (test_bit(QEDI_ERR_ATTN_CLR_EN, &qedi->qedi_err_flags))
1143                        qedi_ops->common->attn_clr_enable(qedi->cdev, true);
1144
1145                if (err_type == QED_HW_ERR_RAMROD_FAIL &&
1146                    test_bit(QEDI_ERR_IS_RECOVERABLE, &qedi->qedi_err_flags))
1147                        qedi_ops->common->recovery_process(qedi->cdev);
1148
1149                break;
1150        default:
1151                break;
1152        }
1153}
1154
1155static void qedi_schedule_recovery_handler(void *dev)
1156{
1157        struct qedi_ctx *qedi = dev;
1158
1159        QEDI_ERR(&qedi->dbg_ctx, "Recovery handler scheduled.\n");
1160
1161        if (test_and_set_bit(QEDI_IN_RECOVERY, &qedi->flags))
1162                return;
1163
1164        atomic_set(&qedi->link_state, QEDI_LINK_DOWN);
1165
1166        schedule_delayed_work(&qedi->recovery_work, 0);
1167}
1168
1169static void qedi_set_conn_recovery(struct iscsi_cls_session *cls_session)
1170{
1171        struct iscsi_session *session = cls_session->dd_data;
1172        struct iscsi_conn *conn = session->leadconn;
1173        struct qedi_conn *qedi_conn = conn->dd_data;
1174
1175        qedi_start_conn_recovery(qedi_conn->qedi, qedi_conn);
1176}
1177
1178static void qedi_link_update(void *dev, struct qed_link_output *link)
1179{
1180        struct qedi_ctx *qedi = (struct qedi_ctx *)dev;
1181
1182        if (link->link_up) {
1183                QEDI_INFO(&qedi->dbg_ctx, QEDI_LOG_INFO, "Link Up event.\n");
1184                atomic_set(&qedi->link_state, QEDI_LINK_UP);
1185        } else {
1186                QEDI_INFO(&qedi->dbg_ctx, QEDI_LOG_INFO,
1187                          "Link Down event.\n");
1188                atomic_set(&qedi->link_state, QEDI_LINK_DOWN);
1189                iscsi_host_for_each_session(qedi->shost, qedi_set_conn_recovery);
1190        }
1191}
1192
1193static struct qed_iscsi_cb_ops qedi_cb_ops = {
1194        {
1195                .link_update =          qedi_link_update,
1196                .schedule_recovery_handler = qedi_schedule_recovery_handler,
1197                .schedule_hw_err_handler = qedi_schedule_hw_err_handler,
1198                .get_protocol_tlv_data = qedi_get_protocol_tlv_data,
1199                .get_generic_tlv_data = qedi_get_generic_tlv_data,
1200        }
1201};
1202
1203static int qedi_queue_cqe(struct qedi_ctx *qedi, union iscsi_cqe *cqe,
1204                          u16 que_idx, struct qedi_percpu_s *p)
1205{
1206        struct qedi_work *qedi_work;
1207        struct qedi_conn *q_conn;
1208        struct qedi_cmd *qedi_cmd;
1209        u32 iscsi_cid;
1210        int rc = 0;
1211
1212        iscsi_cid  = cqe->cqe_common.conn_id;
1213        q_conn = qedi->cid_que.conn_cid_tbl[iscsi_cid];
1214        if (!q_conn) {
1215                QEDI_WARN(&qedi->dbg_ctx,
1216                          "Session no longer exists for cid=0x%x!!\n",
1217                          iscsi_cid);
1218                return -1;
1219        }
1220
1221        switch (cqe->cqe_common.cqe_type) {
1222        case ISCSI_CQE_TYPE_SOLICITED:
1223        case ISCSI_CQE_TYPE_SOLICITED_WITH_SENSE:
1224                qedi_cmd = qedi_get_cmd_from_tid(qedi, cqe->cqe_solicited.itid);
1225                if (!qedi_cmd) {
1226                        rc = -1;
1227                        break;
1228                }
1229                INIT_LIST_HEAD(&qedi_cmd->cqe_work.list);
1230                qedi_cmd->cqe_work.qedi = qedi;
1231                memcpy(&qedi_cmd->cqe_work.cqe, cqe, sizeof(union iscsi_cqe));
1232                qedi_cmd->cqe_work.que_idx = que_idx;
1233                qedi_cmd->cqe_work.is_solicited = true;
1234                list_add_tail(&qedi_cmd->cqe_work.list, &p->work_list);
1235                break;
1236        case ISCSI_CQE_TYPE_UNSOLICITED:
1237        case ISCSI_CQE_TYPE_DUMMY:
1238        case ISCSI_CQE_TYPE_TASK_CLEANUP:
1239                qedi_work = kzalloc(sizeof(*qedi_work), GFP_ATOMIC);
1240                if (!qedi_work) {
1241                        rc = -1;
1242                        break;
1243                }
1244                INIT_LIST_HEAD(&qedi_work->list);
1245                qedi_work->qedi = qedi;
1246                memcpy(&qedi_work->cqe, cqe, sizeof(union iscsi_cqe));
1247                qedi_work->que_idx = que_idx;
1248                qedi_work->is_solicited = false;
1249                list_add_tail(&qedi_work->list, &p->work_list);
1250                break;
1251        default:
1252                rc = -1;
1253                QEDI_ERR(&qedi->dbg_ctx, "FW Error cqe.\n");
1254        }
1255        return rc;
1256}
1257
1258static bool qedi_process_completions(struct qedi_fastpath *fp)
1259{
1260        struct qedi_ctx *qedi = fp->qedi;
1261        struct qed_sb_info *sb_info = fp->sb_info;
1262        struct status_block_e4 *sb = sb_info->sb_virt;
1263        struct qedi_percpu_s *p = NULL;
1264        struct global_queue *que;
1265        u16 prod_idx;
1266        unsigned long flags;
1267        union iscsi_cqe *cqe;
1268        int cpu;
1269        int ret;
1270
1271        /* Get the current firmware producer index */
1272        prod_idx = sb->pi_array[QEDI_PROTO_CQ_PROD_IDX];
1273
1274        if (prod_idx >= QEDI_CQ_SIZE)
1275                prod_idx = prod_idx % QEDI_CQ_SIZE;
1276
1277        que = qedi->global_queues[fp->sb_id];
1278        QEDI_INFO(&qedi->dbg_ctx, QEDI_LOG_IO,
1279                  "Before: global queue=%p prod_idx=%d cons_idx=%d, sb_id=%d\n",
1280                  que, prod_idx, que->cq_cons_idx, fp->sb_id);
1281
1282        qedi->intr_cpu = fp->sb_id;
1283        cpu = smp_processor_id();
1284        p = &per_cpu(qedi_percpu, cpu);
1285
1286        if (unlikely(!p->iothread))
1287                WARN_ON(1);
1288
1289        spin_lock_irqsave(&p->p_work_lock, flags);
1290        while (que->cq_cons_idx != prod_idx) {
1291                cqe = &que->cq[que->cq_cons_idx];
1292
1293                QEDI_INFO(&qedi->dbg_ctx, QEDI_LOG_IO,
1294                          "cqe=%p prod_idx=%d cons_idx=%d.\n",
1295                          cqe, prod_idx, que->cq_cons_idx);
1296
1297                ret = qedi_queue_cqe(qedi, cqe, fp->sb_id, p);
1298                if (ret)
1299                        QEDI_WARN(&qedi->dbg_ctx,
1300                                  "Dropping CQE 0x%x for cid=0x%x.\n",
1301                                  que->cq_cons_idx, cqe->cqe_common.conn_id);
1302
1303                que->cq_cons_idx++;
1304                if (que->cq_cons_idx == QEDI_CQ_SIZE)
1305                        que->cq_cons_idx = 0;
1306        }
1307        wake_up_process(p->iothread);
1308        spin_unlock_irqrestore(&p->p_work_lock, flags);
1309
1310        return true;
1311}
1312
1313static bool qedi_fp_has_work(struct qedi_fastpath *fp)
1314{
1315        struct qedi_ctx *qedi = fp->qedi;
1316        struct global_queue *que;
1317        struct qed_sb_info *sb_info = fp->sb_info;
1318        struct status_block_e4 *sb = sb_info->sb_virt;
1319        u16 prod_idx;
1320
1321        barrier();
1322
1323        /* Get the current firmware producer index */
1324        prod_idx = sb->pi_array[QEDI_PROTO_CQ_PROD_IDX];
1325
1326        /* Get the pointer to the global CQ this completion is on */
1327        que = qedi->global_queues[fp->sb_id];
1328
1329        /* prod idx wrap around uint16 */
1330        if (prod_idx >= QEDI_CQ_SIZE)
1331                prod_idx = prod_idx % QEDI_CQ_SIZE;
1332
1333        return (que->cq_cons_idx != prod_idx);
1334}
1335
1336/* MSI-X fastpath handler code */
1337static irqreturn_t qedi_msix_handler(int irq, void *dev_id)
1338{
1339        struct qedi_fastpath *fp = dev_id;
1340        struct qedi_ctx *qedi = fp->qedi;
1341        bool wake_io_thread = true;
1342
1343        qed_sb_ack(fp->sb_info, IGU_INT_DISABLE, 0);
1344
1345process_again:
1346        wake_io_thread = qedi_process_completions(fp);
1347        if (wake_io_thread) {
1348                QEDI_INFO(&qedi->dbg_ctx, QEDI_LOG_DISC,
1349                          "process already running\n");
1350        }
1351
1352        if (!qedi_fp_has_work(fp))
1353                qed_sb_update_sb_idx(fp->sb_info);
1354
1355        /* Check for more work */
1356        rmb();
1357
1358        if (!qedi_fp_has_work(fp))
1359                qed_sb_ack(fp->sb_info, IGU_INT_ENABLE, 1);
1360        else
1361                goto process_again;
1362
1363        return IRQ_HANDLED;
1364}
1365
1366/* simd handler for MSI/INTa */
1367static void qedi_simd_int_handler(void *cookie)
1368{
1369        /* Cookie is qedi_ctx struct */
1370        struct qedi_ctx *qedi = (struct qedi_ctx *)cookie;
1371
1372        QEDI_WARN(&qedi->dbg_ctx, "qedi=%p.\n", qedi);
1373}
1374
1375#define QEDI_SIMD_HANDLER_NUM           0
1376static void qedi_sync_free_irqs(struct qedi_ctx *qedi)
1377{
1378        int i;
1379        u16 idx;
1380
1381        if (qedi->int_info.msix_cnt) {
1382                for (i = 0; i < qedi->int_info.used_cnt; i++) {
1383                        idx = i * qedi->dev_info.common.num_hwfns +
1384                        qedi_ops->common->get_affin_hwfn_idx(qedi->cdev);
1385
1386                        QEDI_INFO(&qedi->dbg_ctx, QEDI_LOG_INFO,
1387                                  "Freeing IRQ #%d vector_idx=%d.\n", i, idx);
1388
1389                        synchronize_irq(qedi->int_info.msix[idx].vector);
1390                        irq_set_affinity_hint(qedi->int_info.msix[idx].vector,
1391                                              NULL);
1392                        free_irq(qedi->int_info.msix[idx].vector,
1393                                 &qedi->fp_array[i]);
1394                }
1395        } else {
1396                qedi_ops->common->simd_handler_clean(qedi->cdev,
1397                                                     QEDI_SIMD_HANDLER_NUM);
1398        }
1399
1400        qedi->int_info.used_cnt = 0;
1401        qedi_ops->common->set_fp_int(qedi->cdev, 0);
1402}
1403
1404static int qedi_request_msix_irq(struct qedi_ctx *qedi)
1405{
1406        int i, rc, cpu;
1407        u16 idx;
1408
1409        cpu = cpumask_first(cpu_online_mask);
1410        for (i = 0; i < qedi->msix_count; i++) {
1411                idx = i * qedi->dev_info.common.num_hwfns +
1412                          qedi_ops->common->get_affin_hwfn_idx(qedi->cdev);
1413
1414                QEDI_INFO(&qedi->dbg_ctx, QEDI_LOG_INFO,
1415                          "dev_info: num_hwfns=%d affin_hwfn_idx=%d.\n",
1416                          qedi->dev_info.common.num_hwfns,
1417                          qedi_ops->common->get_affin_hwfn_idx(qedi->cdev));
1418
1419                rc = request_irq(qedi->int_info.msix[idx].vector,
1420                                 qedi_msix_handler, 0, "qedi",
1421                                 &qedi->fp_array[i]);
1422                if (rc) {
1423                        QEDI_WARN(&qedi->dbg_ctx, "request_irq failed.\n");
1424                        qedi_sync_free_irqs(qedi);
1425                        return rc;
1426                }
1427                qedi->int_info.used_cnt++;
1428                rc = irq_set_affinity_hint(qedi->int_info.msix[idx].vector,
1429                                           get_cpu_mask(cpu));
1430                cpu = cpumask_next(cpu, cpu_online_mask);
1431        }
1432
1433        return 0;
1434}
1435
1436static int qedi_setup_int(struct qedi_ctx *qedi)
1437{
1438        int rc = 0;
1439
1440        rc = qedi_ops->common->set_fp_int(qedi->cdev, qedi->num_queues);
1441        if (rc < 0)
1442                goto exit_setup_int;
1443
1444        qedi->msix_count = rc;
1445
1446        rc = qedi_ops->common->get_fp_int(qedi->cdev, &qedi->int_info);
1447        if (rc)
1448                goto exit_setup_int;
1449
1450        QEDI_INFO(&qedi->dbg_ctx, QEDI_LOG_DISC,
1451                  "Number of msix_cnt = 0x%x num of cpus = 0x%x\n",
1452                   qedi->int_info.msix_cnt, num_online_cpus());
1453
1454        if (qedi->int_info.msix_cnt) {
1455                rc = qedi_request_msix_irq(qedi);
1456                goto exit_setup_int;
1457        } else {
1458                qedi_ops->common->simd_handler_config(qedi->cdev, &qedi,
1459                                                      QEDI_SIMD_HANDLER_NUM,
1460                                                      qedi_simd_int_handler);
1461                qedi->int_info.used_cnt = 1;
1462        }
1463
1464exit_setup_int:
1465        return rc;
1466}
1467
1468static void qedi_free_nvm_iscsi_cfg(struct qedi_ctx *qedi)
1469{
1470        if (qedi->iscsi_image)
1471                dma_free_coherent(&qedi->pdev->dev,
1472                                  sizeof(struct qedi_nvm_iscsi_image),
1473                                  qedi->iscsi_image, qedi->nvm_buf_dma);
1474}
1475
1476static int qedi_alloc_nvm_iscsi_cfg(struct qedi_ctx *qedi)
1477{
1478        qedi->iscsi_image = dma_alloc_coherent(&qedi->pdev->dev,
1479                                               sizeof(struct qedi_nvm_iscsi_image),
1480                                               &qedi->nvm_buf_dma, GFP_KERNEL);
1481        if (!qedi->iscsi_image) {
1482                QEDI_ERR(&qedi->dbg_ctx, "Could not allocate NVM BUF.\n");
1483                return -ENOMEM;
1484        }
1485        QEDI_INFO(&qedi->dbg_ctx, QEDI_LOG_INFO,
1486                  "NVM BUF addr=0x%p dma=0x%llx.\n", qedi->iscsi_image,
1487                  qedi->nvm_buf_dma);
1488
1489        return 0;
1490}
1491
1492static void qedi_free_bdq(struct qedi_ctx *qedi)
1493{
1494        int i;
1495
1496        if (qedi->bdq_pbl_list)
1497                dma_free_coherent(&qedi->pdev->dev, QEDI_PAGE_SIZE,
1498                                  qedi->bdq_pbl_list, qedi->bdq_pbl_list_dma);
1499
1500        if (qedi->bdq_pbl)
1501                dma_free_coherent(&qedi->pdev->dev, qedi->bdq_pbl_mem_size,
1502                                  qedi->bdq_pbl, qedi->bdq_pbl_dma);
1503
1504        for (i = 0; i < QEDI_BDQ_NUM; i++) {
1505                if (qedi->bdq[i].buf_addr) {
1506                        dma_free_coherent(&qedi->pdev->dev, QEDI_BDQ_BUF_SIZE,
1507                                          qedi->bdq[i].buf_addr,
1508                                          qedi->bdq[i].buf_dma);
1509                }
1510        }
1511}
1512
1513static void qedi_free_global_queues(struct qedi_ctx *qedi)
1514{
1515        int i;
1516        struct global_queue **gl = qedi->global_queues;
1517
1518        for (i = 0; i < qedi->num_queues; i++) {
1519                if (!gl[i])
1520                        continue;
1521
1522                if (gl[i]->cq)
1523                        dma_free_coherent(&qedi->pdev->dev, gl[i]->cq_mem_size,
1524                                          gl[i]->cq, gl[i]->cq_dma);
1525                if (gl[i]->cq_pbl)
1526                        dma_free_coherent(&qedi->pdev->dev, gl[i]->cq_pbl_size,
1527                                          gl[i]->cq_pbl, gl[i]->cq_pbl_dma);
1528
1529                kfree(gl[i]);
1530        }
1531        qedi_free_bdq(qedi);
1532        qedi_free_nvm_iscsi_cfg(qedi);
1533}
1534
1535static int qedi_alloc_bdq(struct qedi_ctx *qedi)
1536{
1537        int i;
1538        struct scsi_bd *pbl;
1539        u64 *list;
1540        dma_addr_t page;
1541
1542        /* Alloc dma memory for BDQ buffers */
1543        for (i = 0; i < QEDI_BDQ_NUM; i++) {
1544                qedi->bdq[i].buf_addr =
1545                                dma_alloc_coherent(&qedi->pdev->dev,
1546                                                   QEDI_BDQ_BUF_SIZE,
1547                                                   &qedi->bdq[i].buf_dma,
1548                                                   GFP_KERNEL);
1549                if (!qedi->bdq[i].buf_addr) {
1550                        QEDI_ERR(&qedi->dbg_ctx,
1551                                 "Could not allocate BDQ buffer %d.\n", i);
1552                        return -ENOMEM;
1553                }
1554        }
1555
1556        /* Alloc dma memory for BDQ page buffer list */
1557        qedi->bdq_pbl_mem_size = QEDI_BDQ_NUM * sizeof(struct scsi_bd);
1558        qedi->bdq_pbl_mem_size = ALIGN(qedi->bdq_pbl_mem_size, QEDI_PAGE_SIZE);
1559        qedi->rq_num_entries = qedi->bdq_pbl_mem_size / sizeof(struct scsi_bd);
1560
1561        QEDI_INFO(&qedi->dbg_ctx, QEDI_LOG_CONN, "rq_num_entries = %d.\n",
1562                  qedi->rq_num_entries);
1563
1564        qedi->bdq_pbl = dma_alloc_coherent(&qedi->pdev->dev,
1565                                           qedi->bdq_pbl_mem_size,
1566                                           &qedi->bdq_pbl_dma, GFP_KERNEL);
1567        if (!qedi->bdq_pbl) {
1568                QEDI_ERR(&qedi->dbg_ctx, "Could not allocate BDQ PBL.\n");
1569                return -ENOMEM;
1570        }
1571
1572        /*
1573         * Populate BDQ PBL with physical and virtual address of individual
1574         * BDQ buffers
1575         */
1576        pbl = (struct scsi_bd  *)qedi->bdq_pbl;
1577        for (i = 0; i < QEDI_BDQ_NUM; i++) {
1578                pbl->address.hi =
1579                                cpu_to_le32(QEDI_U64_HI(qedi->bdq[i].buf_dma));
1580                pbl->address.lo =
1581                                cpu_to_le32(QEDI_U64_LO(qedi->bdq[i].buf_dma));
1582                QEDI_INFO(&qedi->dbg_ctx, QEDI_LOG_CONN,
1583                          "pbl [0x%p] pbl->address hi [0x%llx] lo [0x%llx], idx [%d]\n",
1584                          pbl, pbl->address.hi, pbl->address.lo, i);
1585                pbl->opaque.iscsi_opaque.reserved_zero[0] = 0;
1586                pbl->opaque.iscsi_opaque.reserved_zero[1] = 0;
1587                pbl->opaque.iscsi_opaque.reserved_zero[2] = 0;
1588                pbl->opaque.iscsi_opaque.opaque = cpu_to_le16(i);
1589                pbl++;
1590        }
1591
1592        /* Allocate list of PBL pages */
1593        qedi->bdq_pbl_list = dma_alloc_coherent(&qedi->pdev->dev,
1594                                                QEDI_PAGE_SIZE,
1595                                                &qedi->bdq_pbl_list_dma,
1596                                                GFP_KERNEL);
1597        if (!qedi->bdq_pbl_list) {
1598                QEDI_ERR(&qedi->dbg_ctx,
1599                         "Could not allocate list of PBL pages.\n");
1600                return -ENOMEM;
1601        }
1602
1603        /*
1604         * Now populate PBL list with pages that contain pointers to the
1605         * individual buffers.
1606         */
1607        qedi->bdq_pbl_list_num_entries = qedi->bdq_pbl_mem_size /
1608                                         QEDI_PAGE_SIZE;
1609        list = (u64 *)qedi->bdq_pbl_list;
1610        page = qedi->bdq_pbl_list_dma;
1611        for (i = 0; i < qedi->bdq_pbl_list_num_entries; i++) {
1612                *list = qedi->bdq_pbl_dma;
1613                list++;
1614                page += QEDI_PAGE_SIZE;
1615        }
1616
1617        return 0;
1618}
1619
1620static int qedi_alloc_global_queues(struct qedi_ctx *qedi)
1621{
1622        u32 *list;
1623        int i;
1624        int status = 0, rc;
1625        u32 *pbl;
1626        dma_addr_t page;
1627        int num_pages;
1628
1629        /*
1630         * Number of global queues (CQ / RQ). This should
1631         * be <= number of available MSIX vectors for the PF
1632         */
1633        if (!qedi->num_queues) {
1634                QEDI_ERR(&qedi->dbg_ctx, "No MSI-X vectors available!\n");
1635                return 1;
1636        }
1637
1638        /* Make sure we allocated the PBL that will contain the physical
1639         * addresses of our queues
1640         */
1641        if (!qedi->p_cpuq) {
1642                status = 1;
1643                goto mem_alloc_failure;
1644        }
1645
1646        qedi->global_queues = kzalloc((sizeof(struct global_queue *) *
1647                                       qedi->num_queues), GFP_KERNEL);
1648        if (!qedi->global_queues) {
1649                QEDI_ERR(&qedi->dbg_ctx,
1650                         "Unable to allocate global queues array ptr memory\n");
1651                return -ENOMEM;
1652        }
1653        QEDI_INFO(&qedi->dbg_ctx, QEDI_LOG_DISC,
1654                  "qedi->global_queues=%p.\n", qedi->global_queues);
1655
1656        /* Allocate DMA coherent buffers for BDQ */
1657        rc = qedi_alloc_bdq(qedi);
1658        if (rc)
1659                goto mem_alloc_failure;
1660
1661        /* Allocate DMA coherent buffers for NVM_ISCSI_CFG */
1662        rc = qedi_alloc_nvm_iscsi_cfg(qedi);
1663        if (rc)
1664                goto mem_alloc_failure;
1665
1666        /* Allocate a CQ and an associated PBL for each MSI-X
1667         * vector.
1668         */
1669        for (i = 0; i < qedi->num_queues; i++) {
1670                qedi->global_queues[i] =
1671                                        kzalloc(sizeof(*qedi->global_queues[0]),
1672                                                GFP_KERNEL);
1673                if (!qedi->global_queues[i]) {
1674                        QEDI_ERR(&qedi->dbg_ctx,
1675                                 "Unable to allocation global queue %d.\n", i);
1676                        status = -ENOMEM;
1677                        goto mem_alloc_failure;
1678                }
1679
1680                qedi->global_queues[i]->cq_mem_size =
1681                    (QEDI_CQ_SIZE + 8) * sizeof(union iscsi_cqe);
1682                qedi->global_queues[i]->cq_mem_size =
1683                    (qedi->global_queues[i]->cq_mem_size +
1684                    (QEDI_PAGE_SIZE - 1));
1685
1686                qedi->global_queues[i]->cq_pbl_size =
1687                    (qedi->global_queues[i]->cq_mem_size /
1688                    QEDI_PAGE_SIZE) * sizeof(void *);
1689                qedi->global_queues[i]->cq_pbl_size =
1690                    (qedi->global_queues[i]->cq_pbl_size +
1691                    (QEDI_PAGE_SIZE - 1));
1692
1693                qedi->global_queues[i]->cq = dma_alloc_coherent(&qedi->pdev->dev,
1694                                                                qedi->global_queues[i]->cq_mem_size,
1695                                                                &qedi->global_queues[i]->cq_dma,
1696                                                                GFP_KERNEL);
1697
1698                if (!qedi->global_queues[i]->cq) {
1699                        QEDI_WARN(&qedi->dbg_ctx,
1700                                  "Could not allocate cq.\n");
1701                        status = -ENOMEM;
1702                        goto mem_alloc_failure;
1703                }
1704                qedi->global_queues[i]->cq_pbl = dma_alloc_coherent(&qedi->pdev->dev,
1705                                                                    qedi->global_queues[i]->cq_pbl_size,
1706                                                                    &qedi->global_queues[i]->cq_pbl_dma,
1707                                                                    GFP_KERNEL);
1708
1709                if (!qedi->global_queues[i]->cq_pbl) {
1710                        QEDI_WARN(&qedi->dbg_ctx,
1711                                  "Could not allocate cq PBL.\n");
1712                        status = -ENOMEM;
1713                        goto mem_alloc_failure;
1714                }
1715
1716                /* Create PBL */
1717                num_pages = qedi->global_queues[i]->cq_mem_size /
1718                    QEDI_PAGE_SIZE;
1719                page = qedi->global_queues[i]->cq_dma;
1720                pbl = (u32 *)qedi->global_queues[i]->cq_pbl;
1721
1722                while (num_pages--) {
1723                        *pbl = (u32)page;
1724                        pbl++;
1725                        *pbl = (u32)((u64)page >> 32);
1726                        pbl++;
1727                        page += QEDI_PAGE_SIZE;
1728                }
1729        }
1730
1731        list = (u32 *)qedi->p_cpuq;
1732
1733        /*
1734         * The list is built as follows: CQ#0 PBL pointer, RQ#0 PBL pointer,
1735         * CQ#1 PBL pointer, RQ#1 PBL pointer, etc.  Each PBL pointer points
1736         * to the physical address which contains an array of pointers to the
1737         * physical addresses of the specific queue pages.
1738         */
1739        for (i = 0; i < qedi->num_queues; i++) {
1740                *list = (u32)qedi->global_queues[i]->cq_pbl_dma;
1741                list++;
1742                *list = (u32)((u64)qedi->global_queues[i]->cq_pbl_dma >> 32);
1743                list++;
1744
1745                *list = (u32)0;
1746                list++;
1747                *list = (u32)((u64)0 >> 32);
1748                list++;
1749        }
1750
1751        return 0;
1752
1753mem_alloc_failure:
1754        qedi_free_global_queues(qedi);
1755        return status;
1756}
1757
1758int qedi_alloc_sq(struct qedi_ctx *qedi, struct qedi_endpoint *ep)
1759{
1760        int rval = 0;
1761        u32 *pbl;
1762        dma_addr_t page;
1763        int num_pages;
1764
1765        if (!ep)
1766                return -EIO;
1767
1768        /* Calculate appropriate queue and PBL sizes */
1769        ep->sq_mem_size = QEDI_SQ_SIZE * sizeof(struct iscsi_wqe);
1770        ep->sq_mem_size += QEDI_PAGE_SIZE - 1;
1771
1772        ep->sq_pbl_size = (ep->sq_mem_size / QEDI_PAGE_SIZE) * sizeof(void *);
1773        ep->sq_pbl_size = ep->sq_pbl_size + QEDI_PAGE_SIZE;
1774
1775        ep->sq = dma_alloc_coherent(&qedi->pdev->dev, ep->sq_mem_size,
1776                                    &ep->sq_dma, GFP_KERNEL);
1777        if (!ep->sq) {
1778                QEDI_WARN(&qedi->dbg_ctx,
1779                          "Could not allocate send queue.\n");
1780                rval = -ENOMEM;
1781                goto out;
1782        }
1783        ep->sq_pbl = dma_alloc_coherent(&qedi->pdev->dev, ep->sq_pbl_size,
1784                                        &ep->sq_pbl_dma, GFP_KERNEL);
1785        if (!ep->sq_pbl) {
1786                QEDI_WARN(&qedi->dbg_ctx,
1787                          "Could not allocate send queue PBL.\n");
1788                rval = -ENOMEM;
1789                goto out_free_sq;
1790        }
1791
1792        /* Create PBL */
1793        num_pages = ep->sq_mem_size / QEDI_PAGE_SIZE;
1794        page = ep->sq_dma;
1795        pbl = (u32 *)ep->sq_pbl;
1796
1797        while (num_pages--) {
1798                *pbl = (u32)page;
1799                pbl++;
1800                *pbl = (u32)((u64)page >> 32);
1801                pbl++;
1802                page += QEDI_PAGE_SIZE;
1803        }
1804
1805        return rval;
1806
1807out_free_sq:
1808        dma_free_coherent(&qedi->pdev->dev, ep->sq_mem_size, ep->sq,
1809                          ep->sq_dma);
1810out:
1811        return rval;
1812}
1813
1814void qedi_free_sq(struct qedi_ctx *qedi, struct qedi_endpoint *ep)
1815{
1816        if (ep->sq_pbl)
1817                dma_free_coherent(&qedi->pdev->dev, ep->sq_pbl_size, ep->sq_pbl,
1818                                  ep->sq_pbl_dma);
1819        if (ep->sq)
1820                dma_free_coherent(&qedi->pdev->dev, ep->sq_mem_size, ep->sq,
1821                                  ep->sq_dma);
1822}
1823
1824int qedi_get_task_idx(struct qedi_ctx *qedi)
1825{
1826        s16 tmp_idx;
1827
1828again:
1829        tmp_idx = find_first_zero_bit(qedi->task_idx_map,
1830                                      MAX_ISCSI_TASK_ENTRIES);
1831
1832        if (tmp_idx >= MAX_ISCSI_TASK_ENTRIES) {
1833                QEDI_ERR(&qedi->dbg_ctx, "FW task context pool is full.\n");
1834                tmp_idx = -1;
1835                goto err_idx;
1836        }
1837
1838        if (test_and_set_bit(tmp_idx, qedi->task_idx_map))
1839                goto again;
1840
1841err_idx:
1842        return tmp_idx;
1843}
1844
1845void qedi_clear_task_idx(struct qedi_ctx *qedi, int idx)
1846{
1847        if (!test_and_clear_bit(idx, qedi->task_idx_map))
1848                QEDI_ERR(&qedi->dbg_ctx,
1849                         "FW task context, already cleared, tid=0x%x\n", idx);
1850}
1851
1852void qedi_update_itt_map(struct qedi_ctx *qedi, u32 tid, u32 proto_itt,
1853                         struct qedi_cmd *cmd)
1854{
1855        qedi->itt_map[tid].itt = proto_itt;
1856        qedi->itt_map[tid].p_cmd = cmd;
1857
1858        QEDI_INFO(&qedi->dbg_ctx, QEDI_LOG_CONN,
1859                  "update itt map tid=0x%x, with proto itt=0x%x\n", tid,
1860                  qedi->itt_map[tid].itt);
1861}
1862
1863void qedi_get_task_tid(struct qedi_ctx *qedi, u32 itt, s16 *tid)
1864{
1865        u16 i;
1866
1867        for (i = 0; i < MAX_ISCSI_TASK_ENTRIES; i++) {
1868                if (qedi->itt_map[i].itt == itt) {
1869                        *tid = i;
1870                        QEDI_INFO(&qedi->dbg_ctx, QEDI_LOG_CONN,
1871                                  "Ref itt=0x%x, found at tid=0x%x\n",
1872                                  itt, *tid);
1873                        return;
1874                }
1875        }
1876
1877        WARN_ON(1);
1878}
1879
1880void qedi_get_proto_itt(struct qedi_ctx *qedi, u32 tid, u32 *proto_itt)
1881{
1882        *proto_itt = qedi->itt_map[tid].itt;
1883        QEDI_INFO(&qedi->dbg_ctx, QEDI_LOG_CONN,
1884                  "Get itt map tid [0x%x with proto itt[0x%x]",
1885                  tid, *proto_itt);
1886}
1887
1888struct qedi_cmd *qedi_get_cmd_from_tid(struct qedi_ctx *qedi, u32 tid)
1889{
1890        struct qedi_cmd *cmd = NULL;
1891
1892        if (tid >= MAX_ISCSI_TASK_ENTRIES)
1893                return NULL;
1894
1895        cmd = qedi->itt_map[tid].p_cmd;
1896        if (cmd->task_id != tid)
1897                return NULL;
1898
1899        qedi->itt_map[tid].p_cmd = NULL;
1900
1901        return cmd;
1902}
1903
1904static int qedi_alloc_itt(struct qedi_ctx *qedi)
1905{
1906        qedi->itt_map = kcalloc(MAX_ISCSI_TASK_ENTRIES,
1907                                sizeof(struct qedi_itt_map), GFP_KERNEL);
1908        if (!qedi->itt_map) {
1909                QEDI_ERR(&qedi->dbg_ctx,
1910                         "Unable to allocate itt map array memory\n");
1911                return -ENOMEM;
1912        }
1913        return 0;
1914}
1915
1916static void qedi_free_itt(struct qedi_ctx *qedi)
1917{
1918        kfree(qedi->itt_map);
1919}
1920
1921static struct qed_ll2_cb_ops qedi_ll2_cb_ops = {
1922        .rx_cb = qedi_ll2_rx,
1923        .tx_cb = NULL,
1924};
1925
1926static int qedi_percpu_io_thread(void *arg)
1927{
1928        struct qedi_percpu_s *p = arg;
1929        struct qedi_work *work, *tmp;
1930        unsigned long flags;
1931        LIST_HEAD(work_list);
1932
1933        set_user_nice(current, -20);
1934
1935        while (!kthread_should_stop()) {
1936                spin_lock_irqsave(&p->p_work_lock, flags);
1937                while (!list_empty(&p->work_list)) {
1938                        list_splice_init(&p->work_list, &work_list);
1939                        spin_unlock_irqrestore(&p->p_work_lock, flags);
1940
1941                        list_for_each_entry_safe(work, tmp, &work_list, list) {
1942                                list_del_init(&work->list);
1943                                qedi_fp_process_cqes(work);
1944                                if (!work->is_solicited)
1945                                        kfree(work);
1946                        }
1947                        cond_resched();
1948                        spin_lock_irqsave(&p->p_work_lock, flags);
1949                }
1950                set_current_state(TASK_INTERRUPTIBLE);
1951                spin_unlock_irqrestore(&p->p_work_lock, flags);
1952                schedule();
1953        }
1954        __set_current_state(TASK_RUNNING);
1955
1956        return 0;
1957}
1958
1959static int qedi_cpu_online(unsigned int cpu)
1960{
1961        struct qedi_percpu_s *p = this_cpu_ptr(&qedi_percpu);
1962        struct task_struct *thread;
1963
1964        thread = kthread_create_on_node(qedi_percpu_io_thread, (void *)p,
1965                                        cpu_to_node(cpu),
1966                                        "qedi_thread/%d", cpu);
1967        if (IS_ERR(thread))
1968                return PTR_ERR(thread);
1969
1970        kthread_bind(thread, cpu);
1971        p->iothread = thread;
1972        wake_up_process(thread);
1973        return 0;
1974}
1975
1976static int qedi_cpu_offline(unsigned int cpu)
1977{
1978        struct qedi_percpu_s *p = this_cpu_ptr(&qedi_percpu);
1979        struct qedi_work *work, *tmp;
1980        struct task_struct *thread;
1981
1982        spin_lock_bh(&p->p_work_lock);
1983        thread = p->iothread;
1984        p->iothread = NULL;
1985
1986        list_for_each_entry_safe(work, tmp, &p->work_list, list) {
1987                list_del_init(&work->list);
1988                qedi_fp_process_cqes(work);
1989                if (!work->is_solicited)
1990                        kfree(work);
1991        }
1992
1993        spin_unlock_bh(&p->p_work_lock);
1994        if (thread)
1995                kthread_stop(thread);
1996        return 0;
1997}
1998
1999void qedi_reset_host_mtu(struct qedi_ctx *qedi, u16 mtu)
2000{
2001        struct qed_ll2_params params;
2002
2003        qedi_recover_all_conns(qedi);
2004
2005        qedi_ops->ll2->stop(qedi->cdev);
2006        qedi_ll2_free_skbs(qedi);
2007
2008        QEDI_INFO(&qedi->dbg_ctx, QEDI_LOG_INFO, "old MTU %u, new MTU %u\n",
2009                  qedi->ll2_mtu, mtu);
2010        memset(&params, 0, sizeof(params));
2011        qedi->ll2_mtu = mtu;
2012        params.mtu = qedi->ll2_mtu + IPV6_HDR_LEN + TCP_HDR_LEN;
2013        params.drop_ttl0_packets = 0;
2014        params.rx_vlan_stripping = 1;
2015        ether_addr_copy(params.ll2_mac_address, qedi->dev_info.common.hw_mac);
2016        qedi_ops->ll2->start(qedi->cdev, &params);
2017}
2018
2019/*
2020 * qedi_get_nvram_block: - Scan through the iSCSI NVRAM block (while accounting
2021 * for gaps) for the matching absolute-pf-id of the QEDI device.
2022 */
2023static struct nvm_iscsi_block *
2024qedi_get_nvram_block(struct qedi_ctx *qedi)
2025{
2026        int i;
2027        u8 pf;
2028        u32 flags;
2029        struct nvm_iscsi_block *block;
2030
2031        pf = qedi->dev_info.common.abs_pf_id;
2032        block = &qedi->iscsi_image->iscsi_cfg.block[0];
2033        for (i = 0; i < NUM_OF_ISCSI_PF_SUPPORTED; i++, block++) {
2034                flags = ((block->id) & NVM_ISCSI_CFG_BLK_CTRL_FLAG_MASK) >>
2035                        NVM_ISCSI_CFG_BLK_CTRL_FLAG_OFFSET;
2036                if (flags & (NVM_ISCSI_CFG_BLK_CTRL_FLAG_IS_NOT_EMPTY |
2037                                NVM_ISCSI_CFG_BLK_CTRL_FLAG_PF_MAPPED) &&
2038                        (pf == (block->id & NVM_ISCSI_CFG_BLK_MAPPED_PF_ID_MASK)
2039                                >> NVM_ISCSI_CFG_BLK_MAPPED_PF_ID_OFFSET))
2040                        return block;
2041        }
2042        return NULL;
2043}
2044
2045static ssize_t qedi_show_boot_eth_info(void *data, int type, char *buf)
2046{
2047        struct qedi_ctx *qedi = data;
2048        struct nvm_iscsi_initiator *initiator;
2049        int rc = 1;
2050        u32 ipv6_en, dhcp_en, ip_len;
2051        struct nvm_iscsi_block *block;
2052        char *fmt, *ip, *sub, *gw;
2053
2054        block = qedi_get_nvram_block(qedi);
2055        if (!block)
2056                return 0;
2057
2058        initiator = &block->initiator;
2059        ipv6_en = block->generic.ctrl_flags &
2060                  NVM_ISCSI_CFG_GEN_IPV6_ENABLED;
2061        dhcp_en = block->generic.ctrl_flags &
2062                  NVM_ISCSI_CFG_GEN_DHCP_TCPIP_CONFIG_ENABLED;
2063        /* Static IP assignments. */
2064        fmt = ipv6_en ? "%pI6\n" : "%pI4\n";
2065        ip = ipv6_en ? initiator->ipv6.addr.byte : initiator->ipv4.addr.byte;
2066        ip_len = ipv6_en ? IPV6_LEN : IPV4_LEN;
2067        sub = ipv6_en ? initiator->ipv6.subnet_mask.byte :
2068              initiator->ipv4.subnet_mask.byte;
2069        gw = ipv6_en ? initiator->ipv6.gateway.byte :
2070             initiator->ipv4.gateway.byte;
2071        /* DHCP IP adjustments. */
2072        fmt = dhcp_en ? "%s\n" : fmt;
2073        if (dhcp_en) {
2074                ip = ipv6_en ? "0::0" : "0.0.0.0";
2075                sub = ip;
2076                gw = ip;
2077                ip_len = ipv6_en ? 5 : 8;
2078        }
2079
2080        switch (type) {
2081        case ISCSI_BOOT_ETH_IP_ADDR:
2082                rc = snprintf(buf, ip_len, fmt, ip);
2083                break;
2084        case ISCSI_BOOT_ETH_SUBNET_MASK:
2085                rc = snprintf(buf, ip_len, fmt, sub);
2086                break;
2087        case ISCSI_BOOT_ETH_GATEWAY:
2088                rc = snprintf(buf, ip_len, fmt, gw);
2089                break;
2090        case ISCSI_BOOT_ETH_FLAGS:
2091                rc = snprintf(buf, 3, "%hhd\n",
2092                              SYSFS_FLAG_FW_SEL_BOOT);
2093                break;
2094        case ISCSI_BOOT_ETH_INDEX:
2095                rc = snprintf(buf, 3, "0\n");
2096                break;
2097        case ISCSI_BOOT_ETH_MAC:
2098                rc = sysfs_format_mac(buf, qedi->mac, ETH_ALEN);
2099                break;
2100        case ISCSI_BOOT_ETH_VLAN:
2101                rc = snprintf(buf, 12, "%d\n",
2102                              GET_FIELD2(initiator->generic_cont0,
2103                                         NVM_ISCSI_CFG_INITIATOR_VLAN));
2104                break;
2105        case ISCSI_BOOT_ETH_ORIGIN:
2106                if (dhcp_en)
2107                        rc = snprintf(buf, 3, "3\n");
2108                break;
2109        default:
2110                rc = 0;
2111                break;
2112        }
2113
2114        return rc;
2115}
2116
2117static umode_t qedi_eth_get_attr_visibility(void *data, int type)
2118{
2119        int rc = 1;
2120
2121        switch (type) {
2122        case ISCSI_BOOT_ETH_FLAGS:
2123        case ISCSI_BOOT_ETH_MAC:
2124        case ISCSI_BOOT_ETH_INDEX:
2125        case ISCSI_BOOT_ETH_IP_ADDR:
2126        case ISCSI_BOOT_ETH_SUBNET_MASK:
2127        case ISCSI_BOOT_ETH_GATEWAY:
2128        case ISCSI_BOOT_ETH_ORIGIN:
2129        case ISCSI_BOOT_ETH_VLAN:
2130                rc = 0444;
2131                break;
2132        default:
2133                rc = 0;
2134                break;
2135        }
2136        return rc;
2137}
2138
2139static ssize_t qedi_show_boot_ini_info(void *data, int type, char *buf)
2140{
2141        struct qedi_ctx *qedi = data;
2142        struct nvm_iscsi_initiator *initiator;
2143        int rc;
2144        struct nvm_iscsi_block *block;
2145
2146        block = qedi_get_nvram_block(qedi);
2147        if (!block)
2148                return 0;
2149
2150        initiator = &block->initiator;
2151
2152        switch (type) {
2153        case ISCSI_BOOT_INI_INITIATOR_NAME:
2154                rc = sprintf(buf, "%.*s\n", NVM_ISCSI_CFG_ISCSI_NAME_MAX_LEN,
2155                             initiator->initiator_name.byte);
2156                break;
2157        default:
2158                rc = 0;
2159                break;
2160        }
2161        return rc;
2162}
2163
2164static umode_t qedi_ini_get_attr_visibility(void *data, int type)
2165{
2166        int rc;
2167
2168        switch (type) {
2169        case ISCSI_BOOT_INI_INITIATOR_NAME:
2170                rc = 0444;
2171                break;
2172        default:
2173                rc = 0;
2174                break;
2175        }
2176        return rc;
2177}
2178
2179static ssize_t
2180qedi_show_boot_tgt_info(struct qedi_ctx *qedi, int type,
2181                        char *buf, enum qedi_nvm_tgts idx)
2182{
2183        int rc = 1;
2184        u32 ctrl_flags, ipv6_en, chap_en, mchap_en, ip_len;
2185        struct nvm_iscsi_block *block;
2186        char *chap_name, *chap_secret;
2187        char *mchap_name, *mchap_secret;
2188
2189        block = qedi_get_nvram_block(qedi);
2190        if (!block)
2191                goto exit_show_tgt_info;
2192
2193        QEDI_INFO(&qedi->dbg_ctx, QEDI_LOG_EVT,
2194                  "Port:%d, tgt_idx:%d\n",
2195                  GET_FIELD2(block->id, NVM_ISCSI_CFG_BLK_MAPPED_PF_ID), idx);
2196
2197        ctrl_flags = block->target[idx].ctrl_flags &
2198                     NVM_ISCSI_CFG_TARGET_ENABLED;
2199
2200        if (!ctrl_flags) {
2201                QEDI_INFO(&qedi->dbg_ctx, QEDI_LOG_EVT,
2202                          "Target disabled\n");
2203                goto exit_show_tgt_info;
2204        }
2205
2206        ipv6_en = block->generic.ctrl_flags &
2207                  NVM_ISCSI_CFG_GEN_IPV6_ENABLED;
2208        ip_len = ipv6_en ? IPV6_LEN : IPV4_LEN;
2209        chap_en = block->generic.ctrl_flags &
2210                  NVM_ISCSI_CFG_GEN_CHAP_ENABLED;
2211        chap_name = chap_en ? block->initiator.chap_name.byte : NULL;
2212        chap_secret = chap_en ? block->initiator.chap_password.byte : NULL;
2213
2214        mchap_en = block->generic.ctrl_flags &
2215                  NVM_ISCSI_CFG_GEN_CHAP_MUTUAL_ENABLED;
2216        mchap_name = mchap_en ? block->target[idx].chap_name.byte : NULL;
2217        mchap_secret = mchap_en ? block->target[idx].chap_password.byte : NULL;
2218
2219        switch (type) {
2220        case ISCSI_BOOT_TGT_NAME:
2221                rc = sprintf(buf, "%.*s\n", NVM_ISCSI_CFG_ISCSI_NAME_MAX_LEN,
2222                             block->target[idx].target_name.byte);
2223                break;
2224        case ISCSI_BOOT_TGT_IP_ADDR:
2225                if (ipv6_en)
2226                        rc = snprintf(buf, ip_len, "%pI6\n",
2227                                      block->target[idx].ipv6_addr.byte);
2228                else
2229                        rc = snprintf(buf, ip_len, "%pI4\n",
2230                                      block->target[idx].ipv4_addr.byte);
2231                break;
2232        case ISCSI_BOOT_TGT_PORT:
2233                rc = snprintf(buf, 12, "%d\n",
2234                              GET_FIELD2(block->target[idx].generic_cont0,
2235                                         NVM_ISCSI_CFG_TARGET_TCP_PORT));
2236                break;
2237        case ISCSI_BOOT_TGT_LUN:
2238                rc = snprintf(buf, 22, "%.*d\n",
2239                              block->target[idx].lun.value[1],
2240                              block->target[idx].lun.value[0]);
2241                break;
2242        case ISCSI_BOOT_TGT_CHAP_NAME:
2243                rc = sprintf(buf, "%.*s\n", NVM_ISCSI_CFG_CHAP_NAME_MAX_LEN,
2244                             chap_name);
2245                break;
2246        case ISCSI_BOOT_TGT_CHAP_SECRET:
2247                rc = sprintf(buf, "%.*s\n", NVM_ISCSI_CFG_CHAP_PWD_MAX_LEN,
2248                             chap_secret);
2249                break;
2250        case ISCSI_BOOT_TGT_REV_CHAP_NAME:
2251                rc = sprintf(buf, "%.*s\n", NVM_ISCSI_CFG_CHAP_NAME_MAX_LEN,
2252                             mchap_name);
2253                break;
2254        case ISCSI_BOOT_TGT_REV_CHAP_SECRET:
2255                rc = sprintf(buf, "%.*s\n", NVM_ISCSI_CFG_CHAP_PWD_MAX_LEN,
2256                             mchap_secret);
2257                break;
2258        case ISCSI_BOOT_TGT_FLAGS:
2259                rc = snprintf(buf, 3, "%hhd\n", SYSFS_FLAG_FW_SEL_BOOT);
2260                break;
2261        case ISCSI_BOOT_TGT_NIC_ASSOC:
2262                rc = snprintf(buf, 3, "0\n");
2263                break;
2264        default:
2265                rc = 0;
2266                break;
2267        }
2268
2269exit_show_tgt_info:
2270        return rc;
2271}
2272
2273static ssize_t qedi_show_boot_tgt_pri_info(void *data, int type, char *buf)
2274{
2275        struct qedi_ctx *qedi = data;
2276
2277        return qedi_show_boot_tgt_info(qedi, type, buf, QEDI_NVM_TGT_PRI);
2278}
2279
2280static ssize_t qedi_show_boot_tgt_sec_info(void *data, int type, char *buf)
2281{
2282        struct qedi_ctx *qedi = data;
2283
2284        return qedi_show_boot_tgt_info(qedi, type, buf, QEDI_NVM_TGT_SEC);
2285}
2286
2287static umode_t qedi_tgt_get_attr_visibility(void *data, int type)
2288{
2289        int rc;
2290
2291        switch (type) {
2292        case ISCSI_BOOT_TGT_NAME:
2293        case ISCSI_BOOT_TGT_IP_ADDR:
2294        case ISCSI_BOOT_TGT_PORT:
2295        case ISCSI_BOOT_TGT_LUN:
2296        case ISCSI_BOOT_TGT_CHAP_NAME:
2297        case ISCSI_BOOT_TGT_CHAP_SECRET:
2298        case ISCSI_BOOT_TGT_REV_CHAP_NAME:
2299        case ISCSI_BOOT_TGT_REV_CHAP_SECRET:
2300        case ISCSI_BOOT_TGT_NIC_ASSOC:
2301        case ISCSI_BOOT_TGT_FLAGS:
2302                rc = 0444;
2303                break;
2304        default:
2305                rc = 0;
2306                break;
2307        }
2308        return rc;
2309}
2310
2311static void qedi_boot_release(void *data)
2312{
2313        struct qedi_ctx *qedi = data;
2314
2315        scsi_host_put(qedi->shost);
2316}
2317
2318static int qedi_get_boot_info(struct qedi_ctx *qedi)
2319{
2320        int ret = 1;
2321
2322        QEDI_INFO(&qedi->dbg_ctx, QEDI_LOG_INFO,
2323                  "Get NVM iSCSI CFG image\n");
2324        ret = qedi_ops->common->nvm_get_image(qedi->cdev,
2325                                              QED_NVM_IMAGE_ISCSI_CFG,
2326                                              (char *)qedi->iscsi_image,
2327                                              sizeof(struct qedi_nvm_iscsi_image));
2328        if (ret)
2329                QEDI_ERR(&qedi->dbg_ctx,
2330                         "Could not get NVM image. ret = %d\n", ret);
2331
2332        return ret;
2333}
2334
2335static int qedi_setup_boot_info(struct qedi_ctx *qedi)
2336{
2337        struct iscsi_boot_kobj *boot_kobj;
2338
2339        if (qedi_get_boot_info(qedi))
2340                return -EPERM;
2341
2342        qedi->boot_kset = iscsi_boot_create_host_kset(qedi->shost->host_no);
2343        if (!qedi->boot_kset)
2344                goto kset_free;
2345
2346        if (!scsi_host_get(qedi->shost))
2347                goto kset_free;
2348
2349        boot_kobj = iscsi_boot_create_target(qedi->boot_kset, 0, qedi,
2350                                             qedi_show_boot_tgt_pri_info,
2351                                             qedi_tgt_get_attr_visibility,
2352                                             qedi_boot_release);
2353        if (!boot_kobj)
2354                goto put_host;
2355
2356        if (!scsi_host_get(qedi->shost))
2357                goto kset_free;
2358
2359        boot_kobj = iscsi_boot_create_target(qedi->boot_kset, 1, qedi,
2360                                             qedi_show_boot_tgt_sec_info,
2361                                             qedi_tgt_get_attr_visibility,
2362                                             qedi_boot_release);
2363        if (!boot_kobj)
2364                goto put_host;
2365
2366        if (!scsi_host_get(qedi->shost))
2367                goto kset_free;
2368
2369        boot_kobj = iscsi_boot_create_initiator(qedi->boot_kset, 0, qedi,
2370                                                qedi_show_boot_ini_info,
2371                                                qedi_ini_get_attr_visibility,
2372                                                qedi_boot_release);
2373        if (!boot_kobj)
2374                goto put_host;
2375
2376        if (!scsi_host_get(qedi->shost))
2377                goto kset_free;
2378
2379        boot_kobj = iscsi_boot_create_ethernet(qedi->boot_kset, 0, qedi,
2380                                               qedi_show_boot_eth_info,
2381                                               qedi_eth_get_attr_visibility,
2382                                               qedi_boot_release);
2383        if (!boot_kobj)
2384                goto put_host;
2385
2386        return 0;
2387
2388put_host:
2389        scsi_host_put(qedi->shost);
2390kset_free:
2391        iscsi_boot_destroy_kset(qedi->boot_kset);
2392        return -ENOMEM;
2393}
2394
2395static pci_ers_result_t qedi_io_error_detected(struct pci_dev *pdev,
2396                                               pci_channel_state_t state)
2397{
2398        struct qedi_ctx *qedi = pci_get_drvdata(pdev);
2399
2400        QEDI_ERR(&qedi->dbg_ctx, "%s: PCI error detected [%d]\n",
2401                 __func__, state);
2402
2403        if (test_and_set_bit(QEDI_IN_RECOVERY, &qedi->flags)) {
2404                QEDI_INFO(&qedi->dbg_ctx, QEDI_LOG_INFO,
2405                          "Recovery already in progress.\n");
2406                return PCI_ERS_RESULT_NONE;
2407        }
2408
2409        qedi_ops->common->recovery_process(qedi->cdev);
2410
2411        return PCI_ERS_RESULT_CAN_RECOVER;
2412}
2413
2414static void __qedi_remove(struct pci_dev *pdev, int mode)
2415{
2416        struct qedi_ctx *qedi = pci_get_drvdata(pdev);
2417        int rval;
2418        u16 retry = 10;
2419
2420        if (mode == QEDI_MODE_NORMAL || mode == QEDI_MODE_SHUTDOWN) {
2421                iscsi_host_remove(qedi->shost);
2422
2423                if (qedi->tmf_thread) {
2424                        flush_workqueue(qedi->tmf_thread);
2425                        destroy_workqueue(qedi->tmf_thread);
2426                        qedi->tmf_thread = NULL;
2427                }
2428
2429                if (qedi->offload_thread) {
2430                        flush_workqueue(qedi->offload_thread);
2431                        destroy_workqueue(qedi->offload_thread);
2432                        qedi->offload_thread = NULL;
2433                }
2434        }
2435
2436#ifdef CONFIG_DEBUG_FS
2437        qedi_dbg_host_exit(&qedi->dbg_ctx);
2438#endif
2439        if (!test_bit(QEDI_IN_OFFLINE, &qedi->flags))
2440                qedi_ops->common->set_power_state(qedi->cdev, PCI_D0);
2441
2442        qedi_sync_free_irqs(qedi);
2443
2444        if (!test_bit(QEDI_IN_OFFLINE, &qedi->flags)) {
2445                while (retry--) {
2446                        rval = qedi_ops->stop(qedi->cdev);
2447                        if (rval < 0)
2448                                msleep(1000);
2449                        else
2450                                break;
2451                }
2452                qedi_ops->ll2->stop(qedi->cdev);
2453        }
2454
2455        qedi_free_iscsi_pf_param(qedi);
2456
2457        rval = qedi_ops->common->update_drv_state(qedi->cdev, false);
2458        if (rval)
2459                QEDI_ERR(&qedi->dbg_ctx, "Failed to send drv state to MFW\n");
2460
2461        if (!test_bit(QEDI_IN_OFFLINE, &qedi->flags)) {
2462                qedi_ops->common->slowpath_stop(qedi->cdev);
2463                qedi_ops->common->remove(qedi->cdev);
2464        }
2465
2466        qedi_destroy_fp(qedi);
2467
2468        if (mode == QEDI_MODE_NORMAL || mode == QEDI_MODE_SHUTDOWN) {
2469                qedi_release_cid_que(qedi);
2470                qedi_cm_free_mem(qedi);
2471                qedi_free_uio(qedi->udev);
2472                qedi_free_itt(qedi);
2473
2474                if (qedi->ll2_recv_thread) {
2475                        kthread_stop(qedi->ll2_recv_thread);
2476                        qedi->ll2_recv_thread = NULL;
2477                }
2478                qedi_ll2_free_skbs(qedi);
2479
2480                if (qedi->boot_kset)
2481                        iscsi_boot_destroy_kset(qedi->boot_kset);
2482
2483                iscsi_host_free(qedi->shost);
2484        }
2485}
2486
2487static void qedi_board_disable_work(struct work_struct *work)
2488{
2489        struct qedi_ctx *qedi =
2490                        container_of(work, struct qedi_ctx,
2491                                     board_disable_work.work);
2492
2493        QEDI_INFO(&qedi->dbg_ctx, QEDI_LOG_INFO,
2494                  "Fan failure, Unloading firmware context.\n");
2495
2496        if (test_and_set_bit(QEDI_IN_SHUTDOWN, &qedi->flags))
2497                return;
2498
2499        __qedi_remove(qedi->pdev, QEDI_MODE_SHUTDOWN);
2500}
2501
2502static void qedi_shutdown(struct pci_dev *pdev)
2503{
2504        struct qedi_ctx *qedi = pci_get_drvdata(pdev);
2505
2506        QEDI_ERR(&qedi->dbg_ctx, "%s: Shutdown qedi\n", __func__);
2507        if (test_and_set_bit(QEDI_IN_SHUTDOWN, &qedi->flags))
2508                return;
2509        __qedi_remove(pdev, QEDI_MODE_SHUTDOWN);
2510}
2511
2512static int __qedi_probe(struct pci_dev *pdev, int mode)
2513{
2514        struct qedi_ctx *qedi;
2515        struct qed_ll2_params params;
2516        u8 dp_level = 0;
2517        bool is_vf = false;
2518        char host_buf[16];
2519        struct qed_link_params link_params;
2520        struct qed_slowpath_params sp_params;
2521        struct qed_probe_params qed_params;
2522        void *task_start, *task_end;
2523        int rc;
2524        u16 retry = 10;
2525
2526        if (mode != QEDI_MODE_RECOVERY) {
2527                qedi = qedi_host_alloc(pdev);
2528                if (!qedi) {
2529                        rc = -ENOMEM;
2530                        goto exit_probe;
2531                }
2532        } else {
2533                qedi = pci_get_drvdata(pdev);
2534        }
2535
2536retry_probe:
2537        if (mode == QEDI_MODE_RECOVERY)
2538                msleep(2000);
2539
2540        memset(&qed_params, 0, sizeof(qed_params));
2541        qed_params.protocol = QED_PROTOCOL_ISCSI;
2542        qed_params.dp_module = qedi_qed_debug;
2543        qed_params.dp_level = dp_level;
2544        qed_params.is_vf = is_vf;
2545        qedi->cdev = qedi_ops->common->probe(pdev, &qed_params);
2546        if (!qedi->cdev) {
2547                if (mode == QEDI_MODE_RECOVERY && retry) {
2548                        QEDI_INFO(&qedi->dbg_ctx, QEDI_LOG_INFO,
2549                                  "Retry %d initialize hardware\n", retry);
2550                        retry--;
2551                        goto retry_probe;
2552                }
2553
2554                rc = -ENODEV;
2555                QEDI_ERR(&qedi->dbg_ctx, "Cannot initialize hardware\n");
2556                goto free_host;
2557        }
2558
2559        set_bit(QEDI_ERR_ATTN_CLR_EN, &qedi->qedi_err_flags);
2560        set_bit(QEDI_ERR_IS_RECOVERABLE, &qedi->qedi_err_flags);
2561        atomic_set(&qedi->link_state, QEDI_LINK_DOWN);
2562
2563        rc = qedi_ops->fill_dev_info(qedi->cdev, &qedi->dev_info);
2564        if (rc)
2565                goto free_host;
2566
2567        QEDI_INFO(&qedi->dbg_ctx, QEDI_LOG_INFO,
2568                  "dev_info: num_hwfns=%d affin_hwfn_idx=%d.\n",
2569                  qedi->dev_info.common.num_hwfns,
2570                  qedi_ops->common->get_affin_hwfn_idx(qedi->cdev));
2571
2572        rc = qedi_set_iscsi_pf_param(qedi);
2573        if (rc) {
2574                rc = -ENOMEM;
2575                QEDI_ERR(&qedi->dbg_ctx,
2576                         "Set iSCSI pf param fail\n");
2577                goto free_host;
2578        }
2579
2580        qedi_ops->common->update_pf_params(qedi->cdev, &qedi->pf_params);
2581
2582        rc = qedi_prepare_fp(qedi);
2583        if (rc) {
2584                QEDI_ERR(&qedi->dbg_ctx, "Cannot start slowpath.\n");
2585                goto free_pf_params;
2586        }
2587
2588        /* Start the Slowpath-process */
2589        memset(&sp_params, 0, sizeof(struct qed_slowpath_params));
2590        sp_params.int_mode = QED_INT_MODE_MSIX;
2591        sp_params.drv_major = QEDI_DRIVER_MAJOR_VER;
2592        sp_params.drv_minor = QEDI_DRIVER_MINOR_VER;
2593        sp_params.drv_rev = QEDI_DRIVER_REV_VER;
2594        sp_params.drv_eng = QEDI_DRIVER_ENG_VER;
2595        strlcpy(sp_params.name, "qedi iSCSI", QED_DRV_VER_STR_SIZE);
2596        rc = qedi_ops->common->slowpath_start(qedi->cdev, &sp_params);
2597        if (rc) {
2598                QEDI_ERR(&qedi->dbg_ctx, "Cannot start slowpath\n");
2599                goto stop_hw;
2600        }
2601
2602        /* update_pf_params needs to be called before and after slowpath
2603         * start
2604         */
2605        qedi_ops->common->update_pf_params(qedi->cdev, &qedi->pf_params);
2606
2607        rc = qedi_setup_int(qedi);
2608        if (rc)
2609                goto stop_iscsi_func;
2610
2611        qedi_ops->common->set_power_state(qedi->cdev, PCI_D0);
2612
2613        /* Learn information crucial for qedi to progress */
2614        rc = qedi_ops->fill_dev_info(qedi->cdev, &qedi->dev_info);
2615        if (rc)
2616                goto stop_iscsi_func;
2617
2618        /* Record BDQ producer doorbell addresses */
2619        qedi->bdq_primary_prod = qedi->dev_info.primary_dbq_rq_addr;
2620        qedi->bdq_secondary_prod = qedi->dev_info.secondary_bdq_rq_addr;
2621        QEDI_INFO(&qedi->dbg_ctx, QEDI_LOG_DISC,
2622                  "BDQ primary_prod=%p secondary_prod=%p.\n",
2623                  qedi->bdq_primary_prod,
2624                  qedi->bdq_secondary_prod);
2625
2626        /*
2627         * We need to write the number of BDs in the BDQ we've preallocated so
2628         * the f/w will do a prefetch and we'll get an unsolicited CQE when a
2629         * packet arrives.
2630         */
2631        qedi->bdq_prod_idx = QEDI_BDQ_NUM;
2632        QEDI_INFO(&qedi->dbg_ctx, QEDI_LOG_DISC,
2633                  "Writing %d to primary and secondary BDQ doorbell registers.\n",
2634                  qedi->bdq_prod_idx);
2635        writew(qedi->bdq_prod_idx, qedi->bdq_primary_prod);
2636        readw(qedi->bdq_primary_prod);
2637        writew(qedi->bdq_prod_idx, qedi->bdq_secondary_prod);
2638        readw(qedi->bdq_secondary_prod);
2639
2640        ether_addr_copy(qedi->mac, qedi->dev_info.common.hw_mac);
2641        QEDI_INFO(&qedi->dbg_ctx, QEDI_LOG_DISC, "MAC address is %pM.\n",
2642                  qedi->mac);
2643
2644        snprintf(host_buf, sizeof(host_buf), "host_%d", qedi->shost->host_no);
2645        qedi_ops->common->set_name(qedi->cdev, host_buf);
2646
2647        qedi_ops->register_ops(qedi->cdev, &qedi_cb_ops, qedi);
2648
2649        memset(&params, 0, sizeof(params));
2650        params.mtu = DEF_PATH_MTU + IPV6_HDR_LEN + TCP_HDR_LEN;
2651        qedi->ll2_mtu = DEF_PATH_MTU;
2652        params.drop_ttl0_packets = 0;
2653        params.rx_vlan_stripping = 1;
2654        ether_addr_copy(params.ll2_mac_address, qedi->dev_info.common.hw_mac);
2655
2656        if (mode != QEDI_MODE_RECOVERY) {
2657                /* set up rx path */
2658                INIT_LIST_HEAD(&qedi->ll2_skb_list);
2659                spin_lock_init(&qedi->ll2_lock);
2660                /* start qedi context */
2661                spin_lock_init(&qedi->hba_lock);
2662                spin_lock_init(&qedi->task_idx_lock);
2663                mutex_init(&qedi->stats_lock);
2664        }
2665        qedi_ops->ll2->register_cb_ops(qedi->cdev, &qedi_ll2_cb_ops, qedi);
2666        qedi_ops->ll2->start(qedi->cdev, &params);
2667
2668        if (mode != QEDI_MODE_RECOVERY) {
2669                qedi->ll2_recv_thread = kthread_run(qedi_ll2_recv_thread,
2670                                                    (void *)qedi,
2671                                                    "qedi_ll2_thread");
2672        }
2673
2674        rc = qedi_ops->start(qedi->cdev, &qedi->tasks,
2675                             qedi, qedi_iscsi_event_cb);
2676        if (rc) {
2677                rc = -ENODEV;
2678                QEDI_ERR(&qedi->dbg_ctx, "Cannot start iSCSI function\n");
2679                goto stop_slowpath;
2680        }
2681
2682        task_start = qedi_get_task_mem(&qedi->tasks, 0);
2683        task_end = qedi_get_task_mem(&qedi->tasks, MAX_TID_BLOCKS_ISCSI - 1);
2684        QEDI_INFO(&qedi->dbg_ctx, QEDI_LOG_DISC,
2685                  "Task context start=%p, end=%p block_size=%u.\n",
2686                   task_start, task_end, qedi->tasks.size);
2687
2688        memset(&link_params, 0, sizeof(link_params));
2689        link_params.link_up = true;
2690        rc = qedi_ops->common->set_link(qedi->cdev, &link_params);
2691        if (rc) {
2692                QEDI_WARN(&qedi->dbg_ctx, "Link set up failed.\n");
2693                atomic_set(&qedi->link_state, QEDI_LINK_DOWN);
2694        }
2695
2696#ifdef CONFIG_DEBUG_FS
2697        qedi_dbg_host_init(&qedi->dbg_ctx, qedi_debugfs_ops,
2698                           qedi_dbg_fops);
2699#endif
2700        QEDI_INFO(&qedi->dbg_ctx, QEDI_LOG_INFO,
2701                  "QLogic FastLinQ iSCSI Module qedi %s, FW %d.%d.%d.%d\n",
2702                  QEDI_MODULE_VERSION, FW_MAJOR_VERSION, FW_MINOR_VERSION,
2703                  FW_REVISION_VERSION, FW_ENGINEERING_VERSION);
2704
2705        if (mode == QEDI_MODE_NORMAL) {
2706                if (iscsi_host_add(qedi->shost, &pdev->dev)) {
2707                        QEDI_ERR(&qedi->dbg_ctx,
2708                                 "Could not add iscsi host\n");
2709                        rc = -ENOMEM;
2710                        goto remove_host;
2711                }
2712
2713                /* Allocate uio buffers */
2714                rc = qedi_alloc_uio_rings(qedi);
2715                if (rc) {
2716                        QEDI_ERR(&qedi->dbg_ctx,
2717                                 "UIO alloc ring failed err=%d\n", rc);
2718                        goto remove_host;
2719                }
2720
2721                rc = qedi_init_uio(qedi);
2722                if (rc) {
2723                        QEDI_ERR(&qedi->dbg_ctx,
2724                                 "UIO init failed, err=%d\n", rc);
2725                        goto free_uio;
2726                }
2727
2728                /* host the array on iscsi_conn */
2729                rc = qedi_setup_cid_que(qedi);
2730                if (rc) {
2731                        QEDI_ERR(&qedi->dbg_ctx,
2732                                 "Could not setup cid que\n");
2733                        goto free_uio;
2734                }
2735
2736                rc = qedi_cm_alloc_mem(qedi);
2737                if (rc) {
2738                        QEDI_ERR(&qedi->dbg_ctx,
2739                                 "Could not alloc cm memory\n");
2740                        goto free_cid_que;
2741                }
2742
2743                rc = qedi_alloc_itt(qedi);
2744                if (rc) {
2745                        QEDI_ERR(&qedi->dbg_ctx,
2746                                 "Could not alloc itt memory\n");
2747                        goto free_cid_que;
2748                }
2749
2750                sprintf(host_buf, "host_%d", qedi->shost->host_no);
2751                qedi->tmf_thread = create_singlethread_workqueue(host_buf);
2752                if (!qedi->tmf_thread) {
2753                        QEDI_ERR(&qedi->dbg_ctx,
2754                                 "Unable to start tmf thread!\n");
2755                        rc = -ENODEV;
2756                        goto free_cid_que;
2757                }
2758
2759                sprintf(host_buf, "qedi_ofld%d", qedi->shost->host_no);
2760                qedi->offload_thread = create_workqueue(host_buf);
2761                if (!qedi->offload_thread) {
2762                        QEDI_ERR(&qedi->dbg_ctx,
2763                                 "Unable to start offload thread!\n");
2764                        rc = -ENODEV;
2765                        goto free_tmf_thread;
2766                }
2767
2768                INIT_DELAYED_WORK(&qedi->recovery_work, qedi_recovery_handler);
2769                INIT_DELAYED_WORK(&qedi->board_disable_work,
2770                                  qedi_board_disable_work);
2771
2772                /* F/w needs 1st task context memory entry for performance */
2773                set_bit(QEDI_RESERVE_TASK_ID, qedi->task_idx_map);
2774                atomic_set(&qedi->num_offloads, 0);
2775
2776                if (qedi_setup_boot_info(qedi))
2777                        QEDI_ERR(&qedi->dbg_ctx,
2778                                 "No iSCSI boot target configured\n");
2779
2780                rc = qedi_ops->common->update_drv_state(qedi->cdev, true);
2781                if (rc)
2782                        QEDI_ERR(&qedi->dbg_ctx,
2783                                 "Failed to send drv state to MFW\n");
2784
2785        }
2786
2787        return 0;
2788
2789free_tmf_thread:
2790        destroy_workqueue(qedi->tmf_thread);
2791free_cid_que:
2792        qedi_release_cid_que(qedi);
2793free_uio:
2794        qedi_free_uio(qedi->udev);
2795remove_host:
2796#ifdef CONFIG_DEBUG_FS
2797        qedi_dbg_host_exit(&qedi->dbg_ctx);
2798#endif
2799        iscsi_host_remove(qedi->shost);
2800stop_iscsi_func:
2801        qedi_ops->stop(qedi->cdev);
2802stop_slowpath:
2803        qedi_ops->common->slowpath_stop(qedi->cdev);
2804stop_hw:
2805        qedi_ops->common->remove(qedi->cdev);
2806free_pf_params:
2807        qedi_free_iscsi_pf_param(qedi);
2808free_host:
2809        iscsi_host_free(qedi->shost);
2810exit_probe:
2811        return rc;
2812}
2813
2814static void qedi_mark_conn_recovery(struct iscsi_cls_session *cls_session)
2815{
2816        struct iscsi_session *session = cls_session->dd_data;
2817        struct iscsi_conn *conn = session->leadconn;
2818        struct qedi_conn *qedi_conn = conn->dd_data;
2819
2820        iscsi_conn_failure(qedi_conn->cls_conn->dd_data, ISCSI_ERR_CONN_FAILED);
2821}
2822
2823static void qedi_recovery_handler(struct work_struct *work)
2824{
2825        struct qedi_ctx *qedi =
2826                        container_of(work, struct qedi_ctx, recovery_work.work);
2827
2828        iscsi_host_for_each_session(qedi->shost, qedi_mark_conn_recovery);
2829
2830        /* Call common_ops->recovery_prolog to allow the MFW to quiesce
2831         * any PCI transactions.
2832         */
2833        qedi_ops->common->recovery_prolog(qedi->cdev);
2834
2835        __qedi_remove(qedi->pdev, QEDI_MODE_RECOVERY);
2836        __qedi_probe(qedi->pdev, QEDI_MODE_RECOVERY);
2837        clear_bit(QEDI_IN_RECOVERY, &qedi->flags);
2838}
2839
2840static int qedi_probe(struct pci_dev *pdev, const struct pci_device_id *id)
2841{
2842        return __qedi_probe(pdev, QEDI_MODE_NORMAL);
2843}
2844
2845static void qedi_remove(struct pci_dev *pdev)
2846{
2847        __qedi_remove(pdev, QEDI_MODE_NORMAL);
2848}
2849
2850static struct pci_device_id qedi_pci_tbl[] = {
2851        { PCI_DEVICE(PCI_VENDOR_ID_QLOGIC, 0x165E) },
2852        { PCI_DEVICE(PCI_VENDOR_ID_QLOGIC, 0x8084) },
2853        { 0 },
2854};
2855MODULE_DEVICE_TABLE(pci, qedi_pci_tbl);
2856
2857static enum cpuhp_state qedi_cpuhp_state;
2858
2859static struct pci_error_handlers qedi_err_handler = {
2860        .error_detected = qedi_io_error_detected,
2861};
2862
2863static struct pci_driver qedi_pci_driver = {
2864        .name = QEDI_MODULE_NAME,
2865        .id_table = qedi_pci_tbl,
2866        .probe = qedi_probe,
2867        .remove = qedi_remove,
2868        .shutdown = qedi_shutdown,
2869        .err_handler = &qedi_err_handler,
2870};
2871
2872static int __init qedi_init(void)
2873{
2874        struct qedi_percpu_s *p;
2875        int cpu, rc = 0;
2876
2877        qedi_ops = qed_get_iscsi_ops();
2878        if (!qedi_ops) {
2879                QEDI_ERR(NULL, "Failed to get qed iSCSI operations\n");
2880                return -EINVAL;
2881        }
2882
2883#ifdef CONFIG_DEBUG_FS
2884        qedi_dbg_init("qedi");
2885#endif
2886
2887        qedi_scsi_transport = iscsi_register_transport(&qedi_iscsi_transport);
2888        if (!qedi_scsi_transport) {
2889                QEDI_ERR(NULL, "Could not register qedi transport");
2890                rc = -ENOMEM;
2891                goto exit_qedi_init_1;
2892        }
2893
2894        for_each_possible_cpu(cpu) {
2895                p = &per_cpu(qedi_percpu, cpu);
2896                INIT_LIST_HEAD(&p->work_list);
2897                spin_lock_init(&p->p_work_lock);
2898                p->iothread = NULL;
2899        }
2900
2901        rc = cpuhp_setup_state(CPUHP_AP_ONLINE_DYN, "scsi/qedi:online",
2902                               qedi_cpu_online, qedi_cpu_offline);
2903        if (rc < 0)
2904                goto exit_qedi_init_2;
2905        qedi_cpuhp_state = rc;
2906
2907        rc = pci_register_driver(&qedi_pci_driver);
2908        if (rc) {
2909                QEDI_ERR(NULL, "Failed to register driver\n");
2910                goto exit_qedi_hp;
2911        }
2912
2913        return 0;
2914
2915exit_qedi_hp:
2916        cpuhp_remove_state(qedi_cpuhp_state);
2917exit_qedi_init_2:
2918        iscsi_unregister_transport(&qedi_iscsi_transport);
2919exit_qedi_init_1:
2920#ifdef CONFIG_DEBUG_FS
2921        qedi_dbg_exit();
2922#endif
2923        qed_put_iscsi_ops();
2924        return rc;
2925}
2926
2927static void __exit qedi_cleanup(void)
2928{
2929        pci_unregister_driver(&qedi_pci_driver);
2930        cpuhp_remove_state(qedi_cpuhp_state);
2931        iscsi_unregister_transport(&qedi_iscsi_transport);
2932
2933#ifdef CONFIG_DEBUG_FS
2934        qedi_dbg_exit();
2935#endif
2936        qed_put_iscsi_ops();
2937}
2938
2939MODULE_DESCRIPTION("QLogic FastLinQ 4xxxx iSCSI Module");
2940MODULE_LICENSE("GPL");
2941MODULE_AUTHOR("QLogic Corporation");
2942MODULE_VERSION(QEDI_MODULE_VERSION);
2943module_init(qedi_init);
2944module_exit(qedi_cleanup);
2945