drivers/scsi/qedi/qedi_main.c

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