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 const struct qed_iscsi_ops *qedi_ops; 48 static struct scsi_transport_template *qedi_scsi_transport; 49 static struct pci_driver qedi_pci_driver; 50 static DEFINE_PER_CPU(struct qedi_percpu_s, qedi_percpu); 51 static LIST_HEAD(qedi_udev_list); 52 /* Static function declaration */ 53 static int qedi_alloc_global_queues(struct qedi_ctx *qedi); 54 static void qedi_free_global_queues(struct qedi_ctx *qedi); 55 static struct qedi_cmd *qedi_get_cmd_from_tid(struct qedi_ctx *qedi, u32 tid); 56 static void qedi_reset_uio_rings(struct qedi_uio_dev *udev); 57 static void qedi_ll2_free_skbs(struct qedi_ctx *qedi); 58 59 static int qedi_iscsi_event_cb(void *context, u8 fw_event_code, void *fw_handle) 60 { 61 struct qedi_ctx *qedi; 62 struct qedi_endpoint *qedi_ep; 63 struct async_data *data; 64 int rval = 0; 65 66 if (!context || !fw_handle) { 67 QEDI_ERR(NULL, "Recv event with ctx NULL\n"); 68 return -EINVAL; 69 } 70 71 qedi = (struct qedi_ctx *)context; 72 QEDI_INFO(&qedi->dbg_ctx, QEDI_LOG_INFO, 73 "Recv Event %d fw_handle %p\n", fw_event_code, fw_handle); 74 75 data = (struct async_data *)fw_handle; 76 QEDI_INFO(&qedi->dbg_ctx, QEDI_LOG_INFO, 77 "cid=0x%x tid=0x%x err-code=0x%x fw-dbg-param=0x%x\n", 78 data->cid, data->itid, data->error_code, 79 data->fw_debug_param); 80 81 qedi_ep = qedi->ep_tbl[data->cid]; 82 83 if (!qedi_ep) { 84 QEDI_WARN(&qedi->dbg_ctx, 85 "Cannot process event, ep already disconnected, cid=0x%x\n", 86 data->cid); 87 WARN_ON(1); 88 return -ENODEV; 89 } 90 91 switch (fw_event_code) { 92 case ISCSI_EVENT_TYPE_ASYN_CONNECT_COMPLETE: 93 if (qedi_ep->state == EP_STATE_OFLDCONN_START) 94 qedi_ep->state = EP_STATE_OFLDCONN_COMPL; 95 96 wake_up_interruptible(&qedi_ep->tcp_ofld_wait); 97 break; 98 case ISCSI_EVENT_TYPE_ASYN_TERMINATE_DONE: 99 qedi_ep->state = EP_STATE_DISCONN_COMPL; 100 wake_up_interruptible(&qedi_ep->tcp_ofld_wait); 101 break; 102 case ISCSI_EVENT_TYPE_ISCSI_CONN_ERROR: 103 qedi_process_iscsi_error(qedi_ep, data); 104 break; 105 case ISCSI_EVENT_TYPE_ASYN_ABORT_RCVD: 106 case ISCSI_EVENT_TYPE_ASYN_SYN_RCVD: 107 case ISCSI_EVENT_TYPE_ASYN_MAX_RT_TIME: 108 case ISCSI_EVENT_TYPE_ASYN_MAX_RT_CNT: 109 case ISCSI_EVENT_TYPE_ASYN_MAX_KA_PROBES_CNT: 110 case ISCSI_EVENT_TYPE_ASYN_FIN_WAIT2: 111 case ISCSI_EVENT_TYPE_TCP_CONN_ERROR: 112 qedi_process_tcp_error(qedi_ep, data); 113 break; 114 default: 115 QEDI_ERR(&qedi->dbg_ctx, "Recv Unknown Event %u\n", 116 fw_event_code); 117 } 118 119 return rval; 120 } 121 122 static int qedi_uio_open(struct uio_info *uinfo, struct inode *inode) 123 { 124 struct qedi_uio_dev *udev = uinfo->priv; 125 struct qedi_ctx *qedi = udev->qedi; 126 127 if (!capable(CAP_NET_ADMIN)) 128 return -EPERM; 129 130 if (udev->uio_dev != -1) 131 return -EBUSY; 132 133 rtnl_lock(); 134 udev->uio_dev = iminor(inode); 135 qedi_reset_uio_rings(udev); 136 set_bit(UIO_DEV_OPENED, &qedi->flags); 137 rtnl_unlock(); 138 139 return 0; 140 } 141 142 static int qedi_uio_close(struct uio_info *uinfo, struct inode *inode) 143 { 144 struct qedi_uio_dev *udev = uinfo->priv; 145 struct qedi_ctx *qedi = udev->qedi; 146 147 udev->uio_dev = -1; 148 clear_bit(UIO_DEV_OPENED, &qedi->flags); 149 qedi_ll2_free_skbs(qedi); 150 return 0; 151 } 152 153 static void __qedi_free_uio_rings(struct qedi_uio_dev *udev) 154 { 155 if (udev->uctrl) { 156 free_page((unsigned long)udev->uctrl); 157 udev->uctrl = NULL; 158 } 159 160 if (udev->ll2_ring) { 161 free_page((unsigned long)udev->ll2_ring); 162 udev->ll2_ring = NULL; 163 } 164 165 if (udev->ll2_buf) { 166 free_pages((unsigned long)udev->ll2_buf, 2); 167 udev->ll2_buf = NULL; 168 } 169 } 170 171 static void __qedi_free_uio(struct qedi_uio_dev *udev) 172 { 173 uio_unregister_device(&udev->qedi_uinfo); 174 175 __qedi_free_uio_rings(udev); 176 177 pci_dev_put(udev->pdev); 178 kfree(udev); 179 } 180 181 static void qedi_free_uio(struct qedi_uio_dev *udev) 182 { 183 if (!udev) 184 return; 185 186 list_del_init(&udev->list); 187 __qedi_free_uio(udev); 188 } 189 190 static void qedi_reset_uio_rings(struct qedi_uio_dev *udev) 191 { 192 struct qedi_ctx *qedi = NULL; 193 struct qedi_uio_ctrl *uctrl = NULL; 194 195 qedi = udev->qedi; 196 uctrl = udev->uctrl; 197 198 spin_lock_bh(&qedi->ll2_lock); 199 uctrl->host_rx_cons = 0; 200 uctrl->hw_rx_prod = 0; 201 uctrl->hw_rx_bd_prod = 0; 202 uctrl->host_rx_bd_cons = 0; 203 204 memset(udev->ll2_ring, 0, udev->ll2_ring_size); 205 memset(udev->ll2_buf, 0, udev->ll2_buf_size); 206 spin_unlock_bh(&qedi->ll2_lock); 207 } 208 209 static int __qedi_alloc_uio_rings(struct qedi_uio_dev *udev) 210 { 211 int rc = 0; 212 213 if (udev->ll2_ring || udev->ll2_buf) 214 return rc; 215 216 /* Memory for control area. */ 217 udev->uctrl = (void *)get_zeroed_page(GFP_KERNEL); 218 if (!udev->uctrl) 219 return -ENOMEM; 220 221 /* Allocating memory for LL2 ring */ 222 udev->ll2_ring_size = QEDI_PAGE_SIZE; 223 udev->ll2_ring = (void *)get_zeroed_page(GFP_KERNEL | __GFP_COMP); 224 if (!udev->ll2_ring) { 225 rc = -ENOMEM; 226 goto exit_alloc_ring; 227 } 228 229 /* Allocating memory for Tx/Rx pkt buffer */ 230 udev->ll2_buf_size = TX_RX_RING * LL2_SINGLE_BUF_SIZE; 231 udev->ll2_buf_size = QEDI_PAGE_ALIGN(udev->ll2_buf_size); 232 udev->ll2_buf = (void *)__get_free_pages(GFP_KERNEL | __GFP_COMP | 233 __GFP_ZERO, 2); 234 if (!udev->ll2_buf) { 235 rc = -ENOMEM; 236 goto exit_alloc_buf; 237 } 238 return rc; 239 240 exit_alloc_buf: 241 free_page((unsigned long)udev->ll2_ring); 242 udev->ll2_ring = NULL; 243 exit_alloc_ring: 244 return rc; 245 } 246 247 static int qedi_alloc_uio_rings(struct qedi_ctx *qedi) 248 { 249 struct qedi_uio_dev *udev = NULL; 250 int rc = 0; 251 252 list_for_each_entry(udev, &qedi_udev_list, list) { 253 if (udev->pdev == qedi->pdev) { 254 udev->qedi = qedi; 255 if (__qedi_alloc_uio_rings(udev)) { 256 udev->qedi = NULL; 257 return -ENOMEM; 258 } 259 qedi->udev = udev; 260 return 0; 261 } 262 } 263 264 udev = kzalloc(sizeof(*udev), GFP_KERNEL); 265 if (!udev) { 266 rc = -ENOMEM; 267 goto err_udev; 268 } 269 270 udev->uio_dev = -1; 271 272 udev->qedi = qedi; 273 udev->pdev = qedi->pdev; 274 275 rc = __qedi_alloc_uio_rings(udev); 276 if (rc) 277 goto err_uctrl; 278 279 list_add(&udev->list, &qedi_udev_list); 280 281 pci_dev_get(udev->pdev); 282 qedi->udev = udev; 283 284 udev->tx_pkt = udev->ll2_buf; 285 udev->rx_pkt = udev->ll2_buf + LL2_SINGLE_BUF_SIZE; 286 return 0; 287 288 err_uctrl: 289 kfree(udev); 290 err_udev: 291 return -ENOMEM; 292 } 293 294 static int qedi_init_uio(struct qedi_ctx *qedi) 295 { 296 struct qedi_uio_dev *udev = qedi->udev; 297 struct uio_info *uinfo; 298 int ret = 0; 299 300 if (!udev) 301 return -ENOMEM; 302 303 uinfo = &udev->qedi_uinfo; 304 305 uinfo->mem[0].addr = (unsigned long)udev->uctrl; 306 uinfo->mem[0].size = sizeof(struct qedi_uio_ctrl); 307 uinfo->mem[0].memtype = UIO_MEM_LOGICAL; 308 309 uinfo->mem[1].addr = (unsigned long)udev->ll2_ring; 310 uinfo->mem[1].size = udev->ll2_ring_size; 311 uinfo->mem[1].memtype = UIO_MEM_LOGICAL; 312 313 uinfo->mem[2].addr = (unsigned long)udev->ll2_buf; 314 uinfo->mem[2].size = udev->ll2_buf_size; 315 uinfo->mem[2].memtype = UIO_MEM_LOGICAL; 316 317 uinfo->name = "qedi_uio"; 318 uinfo->version = QEDI_MODULE_VERSION; 319 uinfo->irq = UIO_IRQ_CUSTOM; 320 321 uinfo->open = qedi_uio_open; 322 uinfo->release = qedi_uio_close; 323 324 if (udev->uio_dev == -1) { 325 if (!uinfo->priv) { 326 uinfo->priv = udev; 327 328 ret = uio_register_device(&udev->pdev->dev, uinfo); 329 if (ret) { 330 QEDI_ERR(&qedi->dbg_ctx, 331 "UIO registration failed\n"); 332 } 333 } 334 } 335 336 return ret; 337 } 338 339 static int qedi_alloc_and_init_sb(struct qedi_ctx *qedi, 340 struct qed_sb_info *sb_info, u16 sb_id) 341 { 342 struct status_block *sb_virt; 343 dma_addr_t sb_phys; 344 int ret; 345 346 sb_virt = dma_alloc_coherent(&qedi->pdev->dev, 347 sizeof(struct status_block), &sb_phys, 348 GFP_KERNEL); 349 if (!sb_virt) { 350 QEDI_ERR(&qedi->dbg_ctx, 351 "Status block allocation failed for id = %d.\n", 352 sb_id); 353 return -ENOMEM; 354 } 355 356 ret = qedi_ops->common->sb_init(qedi->cdev, sb_info, sb_virt, sb_phys, 357 sb_id, QED_SB_TYPE_STORAGE); 358 if (ret) { 359 QEDI_ERR(&qedi->dbg_ctx, 360 "Status block initialization failed for id = %d.\n", 361 sb_id); 362 return ret; 363 } 364 365 return 0; 366 } 367 368 static void qedi_free_sb(struct qedi_ctx *qedi) 369 { 370 struct qed_sb_info *sb_info; 371 int id; 372 373 for (id = 0; id < MIN_NUM_CPUS_MSIX(qedi); id++) { 374 sb_info = &qedi->sb_array[id]; 375 if (sb_info->sb_virt) 376 dma_free_coherent(&qedi->pdev->dev, 377 sizeof(*sb_info->sb_virt), 378 (void *)sb_info->sb_virt, 379 sb_info->sb_phys); 380 } 381 } 382 383 static void qedi_free_fp(struct qedi_ctx *qedi) 384 { 385 kfree(qedi->fp_array); 386 kfree(qedi->sb_array); 387 } 388 389 static void qedi_destroy_fp(struct qedi_ctx *qedi) 390 { 391 qedi_free_sb(qedi); 392 qedi_free_fp(qedi); 393 } 394 395 static int qedi_alloc_fp(struct qedi_ctx *qedi) 396 { 397 int ret = 0; 398 399 qedi->fp_array = kcalloc(MIN_NUM_CPUS_MSIX(qedi), 400 sizeof(struct qedi_fastpath), GFP_KERNEL); 401 if (!qedi->fp_array) { 402 QEDI_ERR(&qedi->dbg_ctx, 403 "fastpath fp array allocation failed.\n"); 404 return -ENOMEM; 405 } 406 407 qedi->sb_array = kcalloc(MIN_NUM_CPUS_MSIX(qedi), 408 sizeof(struct qed_sb_info), GFP_KERNEL); 409 if (!qedi->sb_array) { 410 QEDI_ERR(&qedi->dbg_ctx, 411 "fastpath sb array allocation failed.\n"); 412 ret = -ENOMEM; 413 goto free_fp; 414 } 415 416 return ret; 417 418 free_fp: 419 qedi_free_fp(qedi); 420 return ret; 421 } 422 423 static void qedi_int_fp(struct qedi_ctx *qedi) 424 { 425 struct qedi_fastpath *fp; 426 int id; 427 428 memset(qedi->fp_array, 0, MIN_NUM_CPUS_MSIX(qedi) * 429 sizeof(*qedi->fp_array)); 430 memset(qedi->sb_array, 0, MIN_NUM_CPUS_MSIX(qedi) * 431 sizeof(*qedi->sb_array)); 432 433 for (id = 0; id < MIN_NUM_CPUS_MSIX(qedi); id++) { 434 fp = &qedi->fp_array[id]; 435 fp->sb_info = &qedi->sb_array[id]; 436 fp->sb_id = id; 437 fp->qedi = qedi; 438 snprintf(fp->name, sizeof(fp->name), "%s-fp-%d", 439 "qedi", id); 440 441 /* fp_array[i] ---- irq cookie 442 * So init data which is needed in int ctx 443 */ 444 } 445 } 446 447 static int qedi_prepare_fp(struct qedi_ctx *qedi) 448 { 449 struct qedi_fastpath *fp; 450 int id, ret = 0; 451 452 ret = qedi_alloc_fp(qedi); 453 if (ret) 454 goto err; 455 456 qedi_int_fp(qedi); 457 458 for (id = 0; id < MIN_NUM_CPUS_MSIX(qedi); id++) { 459 fp = &qedi->fp_array[id]; 460 ret = qedi_alloc_and_init_sb(qedi, fp->sb_info, fp->sb_id); 461 if (ret) { 462 QEDI_ERR(&qedi->dbg_ctx, 463 "SB allocation and initialization failed.\n"); 464 ret = -EIO; 465 goto err_init; 466 } 467 } 468 469 return 0; 470 471 err_init: 472 qedi_free_sb(qedi); 473 qedi_free_fp(qedi); 474 err: 475 return ret; 476 } 477 478 static int qedi_setup_cid_que(struct qedi_ctx *qedi) 479 { 480 int i; 481 482 qedi->cid_que.cid_que_base = kmalloc_array(qedi->max_active_conns, 483 sizeof(u32), GFP_KERNEL); 484 if (!qedi->cid_que.cid_que_base) 485 return -ENOMEM; 486 487 qedi->cid_que.conn_cid_tbl = kmalloc_array(qedi->max_active_conns, 488 sizeof(struct qedi_conn *), 489 GFP_KERNEL); 490 if (!qedi->cid_que.conn_cid_tbl) { 491 kfree(qedi->cid_que.cid_que_base); 492 qedi->cid_que.cid_que_base = NULL; 493 return -ENOMEM; 494 } 495 496 qedi->cid_que.cid_que = (u32 *)qedi->cid_que.cid_que_base; 497 qedi->cid_que.cid_q_prod_idx = 0; 498 qedi->cid_que.cid_q_cons_idx = 0; 499 qedi->cid_que.cid_q_max_idx = qedi->max_active_conns; 500 qedi->cid_que.cid_free_cnt = qedi->max_active_conns; 501 502 for (i = 0; i < qedi->max_active_conns; i++) { 503 qedi->cid_que.cid_que[i] = i; 504 qedi->cid_que.conn_cid_tbl[i] = NULL; 505 } 506 507 return 0; 508 } 509 510 static void qedi_release_cid_que(struct qedi_ctx *qedi) 511 { 512 kfree(qedi->cid_que.cid_que_base); 513 qedi->cid_que.cid_que_base = NULL; 514 515 kfree(qedi->cid_que.conn_cid_tbl); 516 qedi->cid_que.conn_cid_tbl = NULL; 517 } 518 519 static int qedi_init_id_tbl(struct qedi_portid_tbl *id_tbl, u16 size, 520 u16 start_id, u16 next) 521 { 522 id_tbl->start = start_id; 523 id_tbl->max = size; 524 id_tbl->next = next; 525 spin_lock_init(&id_tbl->lock); 526 id_tbl->table = kzalloc(DIV_ROUND_UP(size, 32) * 4, GFP_KERNEL); 527 if (!id_tbl->table) 528 return -ENOMEM; 529 530 return 0; 531 } 532 533 static void qedi_free_id_tbl(struct qedi_portid_tbl *id_tbl) 534 { 535 kfree(id_tbl->table); 536 id_tbl->table = NULL; 537 } 538 539 int qedi_alloc_id(struct qedi_portid_tbl *id_tbl, u16 id) 540 { 541 int ret = -1; 542 543 id -= id_tbl->start; 544 if (id >= id_tbl->max) 545 return ret; 546 547 spin_lock(&id_tbl->lock); 548 if (!test_bit(id, id_tbl->table)) { 549 set_bit(id, id_tbl->table); 550 ret = 0; 551 } 552 spin_unlock(&id_tbl->lock); 553 return ret; 554 } 555 556 u16 qedi_alloc_new_id(struct qedi_portid_tbl *id_tbl) 557 { 558 u16 id; 559 560 spin_lock(&id_tbl->lock); 561 id = find_next_zero_bit(id_tbl->table, id_tbl->max, id_tbl->next); 562 if (id >= id_tbl->max) { 563 id = QEDI_LOCAL_PORT_INVALID; 564 if (id_tbl->next != 0) { 565 id = find_first_zero_bit(id_tbl->table, id_tbl->next); 566 if (id >= id_tbl->next) 567 id = QEDI_LOCAL_PORT_INVALID; 568 } 569 } 570 571 if (id < id_tbl->max) { 572 set_bit(id, id_tbl->table); 573 id_tbl->next = (id + 1) & (id_tbl->max - 1); 574 id += id_tbl->start; 575 } 576 577 spin_unlock(&id_tbl->lock); 578 579 return id; 580 } 581 582 void qedi_free_id(struct qedi_portid_tbl *id_tbl, u16 id) 583 { 584 if (id == QEDI_LOCAL_PORT_INVALID) 585 return; 586 587 id -= id_tbl->start; 588 if (id >= id_tbl->max) 589 return; 590 591 clear_bit(id, id_tbl->table); 592 } 593 594 static void qedi_cm_free_mem(struct qedi_ctx *qedi) 595 { 596 kfree(qedi->ep_tbl); 597 qedi->ep_tbl = NULL; 598 qedi_free_id_tbl(&qedi->lcl_port_tbl); 599 } 600 601 static int qedi_cm_alloc_mem(struct qedi_ctx *qedi) 602 { 603 u16 port_id; 604 605 qedi->ep_tbl = kzalloc((qedi->max_active_conns * 606 sizeof(struct qedi_endpoint *)), GFP_KERNEL); 607 if (!qedi->ep_tbl) 608 return -ENOMEM; 609 port_id = prandom_u32() % QEDI_LOCAL_PORT_RANGE; 610 if (qedi_init_id_tbl(&qedi->lcl_port_tbl, QEDI_LOCAL_PORT_RANGE, 611 QEDI_LOCAL_PORT_MIN, port_id)) { 612 qedi_cm_free_mem(qedi); 613 return -ENOMEM; 614 } 615 616 return 0; 617 } 618 619 static struct qedi_ctx *qedi_host_alloc(struct pci_dev *pdev) 620 { 621 struct Scsi_Host *shost; 622 struct qedi_ctx *qedi = NULL; 623 624 shost = iscsi_host_alloc(&qedi_host_template, 625 sizeof(struct qedi_ctx), 0); 626 if (!shost) { 627 QEDI_ERR(NULL, "Could not allocate shost\n"); 628 goto exit_setup_shost; 629 } 630 631 shost->max_id = QEDI_MAX_ISCSI_CONNS_PER_HBA; 632 shost->max_channel = 0; 633 shost->max_lun = ~0; 634 shost->max_cmd_len = 16; 635 shost->transportt = qedi_scsi_transport; 636 637 qedi = iscsi_host_priv(shost); 638 memset(qedi, 0, sizeof(*qedi)); 639 qedi->shost = shost; 640 qedi->dbg_ctx.host_no = shost->host_no; 641 qedi->pdev = pdev; 642 qedi->dbg_ctx.pdev = pdev; 643 qedi->max_active_conns = ISCSI_MAX_SESS_PER_HBA; 644 qedi->max_sqes = QEDI_SQ_SIZE; 645 646 if (shost_use_blk_mq(shost)) 647 shost->nr_hw_queues = MIN_NUM_CPUS_MSIX(qedi); 648 649 pci_set_drvdata(pdev, qedi); 650 651 exit_setup_shost: 652 return qedi; 653 } 654 655 static int qedi_ll2_rx(void *cookie, struct sk_buff *skb, u32 arg1, u32 arg2) 656 { 657 struct qedi_ctx *qedi = (struct qedi_ctx *)cookie; 658 struct qedi_uio_dev *udev; 659 struct qedi_uio_ctrl *uctrl; 660 struct skb_work_list *work; 661 u32 prod; 662 663 if (!qedi) { 664 QEDI_ERR(NULL, "qedi is NULL\n"); 665 return -1; 666 } 667 668 if (!test_bit(UIO_DEV_OPENED, &qedi->flags)) { 669 QEDI_INFO(&qedi->dbg_ctx, QEDI_LOG_UIO, 670 "UIO DEV is not opened\n"); 671 kfree_skb(skb); 672 return 0; 673 } 674 675 udev = qedi->udev; 676 uctrl = udev->uctrl; 677 678 work = kzalloc(sizeof(*work), GFP_ATOMIC); 679 if (!work) { 680 QEDI_WARN(&qedi->dbg_ctx, 681 "Could not allocate work so dropping frame.\n"); 682 kfree_skb(skb); 683 return 0; 684 } 685 686 INIT_LIST_HEAD(&work->list); 687 work->skb = skb; 688 689 if (skb_vlan_tag_present(skb)) 690 work->vlan_id = skb_vlan_tag_get(skb); 691 692 if (work->vlan_id) 693 __vlan_insert_tag(work->skb, htons(ETH_P_8021Q), work->vlan_id); 694 695 spin_lock_bh(&qedi->ll2_lock); 696 list_add_tail(&work->list, &qedi->ll2_skb_list); 697 698 ++uctrl->hw_rx_prod_cnt; 699 prod = (uctrl->hw_rx_prod + 1) % RX_RING; 700 if (prod != uctrl->host_rx_cons) { 701 uctrl->hw_rx_prod = prod; 702 spin_unlock_bh(&qedi->ll2_lock); 703 wake_up_process(qedi->ll2_recv_thread); 704 return 0; 705 } 706 707 spin_unlock_bh(&qedi->ll2_lock); 708 return 0; 709 } 710 711 /* map this skb to iscsiuio mmaped region */ 712 static int qedi_ll2_process_skb(struct qedi_ctx *qedi, struct sk_buff *skb, 713 u16 vlan_id) 714 { 715 struct qedi_uio_dev *udev = NULL; 716 struct qedi_uio_ctrl *uctrl = NULL; 717 struct qedi_rx_bd rxbd; 718 struct qedi_rx_bd *p_rxbd; 719 u32 rx_bd_prod; 720 void *pkt; 721 int len = 0; 722 723 if (!qedi) { 724 QEDI_ERR(NULL, "qedi is NULL\n"); 725 return -1; 726 } 727 728 udev = qedi->udev; 729 uctrl = udev->uctrl; 730 pkt = udev->rx_pkt + (uctrl->hw_rx_prod * LL2_SINGLE_BUF_SIZE); 731 len = min_t(u32, skb->len, (u32)LL2_SINGLE_BUF_SIZE); 732 memcpy(pkt, skb->data, len); 733 734 memset(&rxbd, 0, sizeof(rxbd)); 735 rxbd.rx_pkt_index = uctrl->hw_rx_prod; 736 rxbd.rx_pkt_len = len; 737 rxbd.vlan_id = vlan_id; 738 739 uctrl->hw_rx_bd_prod = (uctrl->hw_rx_bd_prod + 1) % QEDI_NUM_RX_BD; 740 rx_bd_prod = uctrl->hw_rx_bd_prod; 741 p_rxbd = (struct qedi_rx_bd *)udev->ll2_ring; 742 p_rxbd += rx_bd_prod; 743 744 memcpy(p_rxbd, &rxbd, sizeof(rxbd)); 745 746 /* notify the iscsiuio about new packet */ 747 uio_event_notify(&udev->qedi_uinfo); 748 749 return 0; 750 } 751 752 static void qedi_ll2_free_skbs(struct qedi_ctx *qedi) 753 { 754 struct skb_work_list *work, *work_tmp; 755 756 spin_lock_bh(&qedi->ll2_lock); 757 list_for_each_entry_safe(work, work_tmp, &qedi->ll2_skb_list, list) { 758 list_del(&work->list); 759 if (work->skb) 760 kfree_skb(work->skb); 761 kfree(work); 762 } 763 spin_unlock_bh(&qedi->ll2_lock); 764 } 765 766 static int qedi_ll2_recv_thread(void *arg) 767 { 768 struct qedi_ctx *qedi = (struct qedi_ctx *)arg; 769 struct skb_work_list *work, *work_tmp; 770 771 set_user_nice(current, -20); 772 773 while (!kthread_should_stop()) { 774 spin_lock_bh(&qedi->ll2_lock); 775 list_for_each_entry_safe(work, work_tmp, &qedi->ll2_skb_list, 776 list) { 777 list_del(&work->list); 778 qedi_ll2_process_skb(qedi, work->skb, work->vlan_id); 779 kfree_skb(work->skb); 780 kfree(work); 781 } 782 set_current_state(TASK_INTERRUPTIBLE); 783 spin_unlock_bh(&qedi->ll2_lock); 784 schedule(); 785 } 786 787 __set_current_state(TASK_RUNNING); 788 return 0; 789 } 790 791 static int qedi_set_iscsi_pf_param(struct qedi_ctx *qedi) 792 { 793 u8 num_sq_pages; 794 u32 log_page_size; 795 int rval = 0; 796 797 798 num_sq_pages = (MAX_OUSTANDING_TASKS_PER_CON * 8) / PAGE_SIZE; 799 800 qedi->num_queues = MIN_NUM_CPUS_MSIX(qedi); 801 802 QEDI_INFO(&qedi->dbg_ctx, QEDI_LOG_INFO, 803 "Number of CQ count is %d\n", qedi->num_queues); 804 805 memset(&qedi->pf_params.iscsi_pf_params, 0, 806 sizeof(qedi->pf_params.iscsi_pf_params)); 807 808 qedi->p_cpuq = pci_alloc_consistent(qedi->pdev, 809 qedi->num_queues * sizeof(struct qedi_glbl_q_params), 810 &qedi->hw_p_cpuq); 811 if (!qedi->p_cpuq) { 812 QEDI_ERR(&qedi->dbg_ctx, "pci_alloc_consistent fail\n"); 813 rval = -1; 814 goto err_alloc_mem; 815 } 816 817 rval = qedi_alloc_global_queues(qedi); 818 if (rval) { 819 QEDI_ERR(&qedi->dbg_ctx, "Global queue allocation failed.\n"); 820 rval = -1; 821 goto err_alloc_mem; 822 } 823 824 qedi->pf_params.iscsi_pf_params.num_cons = QEDI_MAX_ISCSI_CONNS_PER_HBA; 825 qedi->pf_params.iscsi_pf_params.num_tasks = QEDI_MAX_ISCSI_TASK; 826 qedi->pf_params.iscsi_pf_params.half_way_close_timeout = 10; 827 qedi->pf_params.iscsi_pf_params.num_sq_pages_in_ring = num_sq_pages; 828 qedi->pf_params.iscsi_pf_params.num_r2tq_pages_in_ring = num_sq_pages; 829 qedi->pf_params.iscsi_pf_params.num_uhq_pages_in_ring = num_sq_pages; 830 qedi->pf_params.iscsi_pf_params.num_queues = qedi->num_queues; 831 qedi->pf_params.iscsi_pf_params.debug_mode = qedi_fw_debug; 832 qedi->pf_params.iscsi_pf_params.two_msl_timer = 4000; 833 qedi->pf_params.iscsi_pf_params.max_fin_rt = 2; 834 835 for (log_page_size = 0 ; log_page_size < 32 ; log_page_size++) { 836 if ((1 << log_page_size) == PAGE_SIZE) 837 break; 838 } 839 qedi->pf_params.iscsi_pf_params.log_page_size = log_page_size; 840 841 qedi->pf_params.iscsi_pf_params.glbl_q_params_addr = 842 (u64)qedi->hw_p_cpuq; 843 844 /* RQ BDQ initializations. 845 * rq_num_entries: suggested value for Initiator is 16 (4KB RQ) 846 * rqe_log_size: 8 for 256B RQE 847 */ 848 qedi->pf_params.iscsi_pf_params.rqe_log_size = 8; 849 /* BDQ address and size */ 850 qedi->pf_params.iscsi_pf_params.bdq_pbl_base_addr[BDQ_ID_RQ] = 851 qedi->bdq_pbl_list_dma; 852 qedi->pf_params.iscsi_pf_params.bdq_pbl_num_entries[BDQ_ID_RQ] = 853 qedi->bdq_pbl_list_num_entries; 854 qedi->pf_params.iscsi_pf_params.rq_buffer_size = QEDI_BDQ_BUF_SIZE; 855 856 /* cq_num_entries: num_tasks + rq_num_entries */ 857 qedi->pf_params.iscsi_pf_params.cq_num_entries = 2048; 858 859 qedi->pf_params.iscsi_pf_params.gl_rq_pi = QEDI_PROTO_CQ_PROD_IDX; 860 qedi->pf_params.iscsi_pf_params.gl_cmd_pi = 1; 861 qedi->pf_params.iscsi_pf_params.ooo_enable = 1; 862 863 err_alloc_mem: 864 return rval; 865 } 866 867 /* Free DMA coherent memory for array of queue pointers we pass to qed */ 868 static void qedi_free_iscsi_pf_param(struct qedi_ctx *qedi) 869 { 870 size_t size = 0; 871 872 if (qedi->p_cpuq) { 873 size = qedi->num_queues * sizeof(struct qedi_glbl_q_params); 874 pci_free_consistent(qedi->pdev, size, qedi->p_cpuq, 875 qedi->hw_p_cpuq); 876 } 877 878 qedi_free_global_queues(qedi); 879 880 kfree(qedi->global_queues); 881 } 882 883 static void qedi_link_update(void *dev, struct qed_link_output *link) 884 { 885 struct qedi_ctx *qedi = (struct qedi_ctx *)dev; 886 887 if (link->link_up) { 888 QEDI_INFO(&qedi->dbg_ctx, QEDI_LOG_INFO, "Link Up event.\n"); 889 atomic_set(&qedi->link_state, QEDI_LINK_UP); 890 } else { 891 QEDI_INFO(&qedi->dbg_ctx, QEDI_LOG_INFO, 892 "Link Down event.\n"); 893 atomic_set(&qedi->link_state, QEDI_LINK_DOWN); 894 } 895 } 896 897 static struct qed_iscsi_cb_ops qedi_cb_ops = { 898 { 899 .link_update = qedi_link_update, 900 } 901 }; 902 903 static int qedi_queue_cqe(struct qedi_ctx *qedi, union iscsi_cqe *cqe, 904 u16 que_idx, struct qedi_percpu_s *p) 905 { 906 struct qedi_work *qedi_work; 907 struct qedi_conn *q_conn; 908 struct iscsi_conn *conn; 909 struct qedi_cmd *qedi_cmd; 910 u32 iscsi_cid; 911 int rc = 0; 912 913 iscsi_cid = cqe->cqe_common.conn_id; 914 q_conn = qedi->cid_que.conn_cid_tbl[iscsi_cid]; 915 if (!q_conn) { 916 QEDI_WARN(&qedi->dbg_ctx, 917 "Session no longer exists for cid=0x%x!!\n", 918 iscsi_cid); 919 return -1; 920 } 921 conn = q_conn->cls_conn->dd_data; 922 923 switch (cqe->cqe_common.cqe_type) { 924 case ISCSI_CQE_TYPE_SOLICITED: 925 case ISCSI_CQE_TYPE_SOLICITED_WITH_SENSE: 926 qedi_cmd = qedi_get_cmd_from_tid(qedi, cqe->cqe_solicited.itid); 927 if (!qedi_cmd) { 928 rc = -1; 929 break; 930 } 931 INIT_LIST_HEAD(&qedi_cmd->cqe_work.list); 932 qedi_cmd->cqe_work.qedi = qedi; 933 memcpy(&qedi_cmd->cqe_work.cqe, cqe, sizeof(union iscsi_cqe)); 934 qedi_cmd->cqe_work.que_idx = que_idx; 935 qedi_cmd->cqe_work.is_solicited = true; 936 list_add_tail(&qedi_cmd->cqe_work.list, &p->work_list); 937 break; 938 case ISCSI_CQE_TYPE_UNSOLICITED: 939 case ISCSI_CQE_TYPE_DUMMY: 940 case ISCSI_CQE_TYPE_TASK_CLEANUP: 941 qedi_work = kzalloc(sizeof(*qedi_work), GFP_ATOMIC); 942 if (!qedi_work) { 943 rc = -1; 944 break; 945 } 946 INIT_LIST_HEAD(&qedi_work->list); 947 qedi_work->qedi = qedi; 948 memcpy(&qedi_work->cqe, cqe, sizeof(union iscsi_cqe)); 949 qedi_work->que_idx = que_idx; 950 qedi_work->is_solicited = false; 951 list_add_tail(&qedi_work->list, &p->work_list); 952 break; 953 default: 954 rc = -1; 955 QEDI_ERR(&qedi->dbg_ctx, "FW Error cqe.\n"); 956 } 957 return rc; 958 } 959 960 static bool qedi_process_completions(struct qedi_fastpath *fp) 961 { 962 struct qedi_ctx *qedi = fp->qedi; 963 struct qed_sb_info *sb_info = fp->sb_info; 964 struct status_block *sb = sb_info->sb_virt; 965 struct qedi_percpu_s *p = NULL; 966 struct global_queue *que; 967 u16 prod_idx; 968 unsigned long flags; 969 union iscsi_cqe *cqe; 970 int cpu; 971 int ret; 972 973 /* Get the current firmware producer index */ 974 prod_idx = sb->pi_array[QEDI_PROTO_CQ_PROD_IDX]; 975 976 if (prod_idx >= QEDI_CQ_SIZE) 977 prod_idx = prod_idx % QEDI_CQ_SIZE; 978 979 que = qedi->global_queues[fp->sb_id]; 980 QEDI_INFO(&qedi->dbg_ctx, QEDI_LOG_IO, 981 "Before: global queue=%p prod_idx=%d cons_idx=%d, sb_id=%d\n", 982 que, prod_idx, que->cq_cons_idx, fp->sb_id); 983 984 qedi->intr_cpu = fp->sb_id; 985 cpu = smp_processor_id(); 986 p = &per_cpu(qedi_percpu, cpu); 987 988 if (unlikely(!p->iothread)) 989 WARN_ON(1); 990 991 spin_lock_irqsave(&p->p_work_lock, flags); 992 while (que->cq_cons_idx != prod_idx) { 993 cqe = &que->cq[que->cq_cons_idx]; 994 995 QEDI_INFO(&qedi->dbg_ctx, QEDI_LOG_IO, 996 "cqe=%p prod_idx=%d cons_idx=%d.\n", 997 cqe, prod_idx, que->cq_cons_idx); 998 999 ret = qedi_queue_cqe(qedi, cqe, fp->sb_id, p); 1000 if (ret) 1001 continue; 1002 1003 que->cq_cons_idx++; 1004 if (que->cq_cons_idx == QEDI_CQ_SIZE) 1005 que->cq_cons_idx = 0; 1006 } 1007 wake_up_process(p->iothread); 1008 spin_unlock_irqrestore(&p->p_work_lock, flags); 1009 1010 return true; 1011 } 1012 1013 static bool qedi_fp_has_work(struct qedi_fastpath *fp) 1014 { 1015 struct qedi_ctx *qedi = fp->qedi; 1016 struct global_queue *que; 1017 struct qed_sb_info *sb_info = fp->sb_info; 1018 struct status_block *sb = sb_info->sb_virt; 1019 u16 prod_idx; 1020 1021 barrier(); 1022 1023 /* Get the current firmware producer index */ 1024 prod_idx = sb->pi_array[QEDI_PROTO_CQ_PROD_IDX]; 1025 1026 /* Get the pointer to the global CQ this completion is on */ 1027 que = qedi->global_queues[fp->sb_id]; 1028 1029 /* prod idx wrap around uint16 */ 1030 if (prod_idx >= QEDI_CQ_SIZE) 1031 prod_idx = prod_idx % QEDI_CQ_SIZE; 1032 1033 return (que->cq_cons_idx != prod_idx); 1034 } 1035 1036 /* MSI-X fastpath handler code */ 1037 static irqreturn_t qedi_msix_handler(int irq, void *dev_id) 1038 { 1039 struct qedi_fastpath *fp = dev_id; 1040 struct qedi_ctx *qedi = fp->qedi; 1041 bool wake_io_thread = true; 1042 1043 qed_sb_ack(fp->sb_info, IGU_INT_DISABLE, 0); 1044 1045 process_again: 1046 wake_io_thread = qedi_process_completions(fp); 1047 if (wake_io_thread) { 1048 QEDI_INFO(&qedi->dbg_ctx, QEDI_LOG_DISC, 1049 "process already running\n"); 1050 } 1051 1052 if (qedi_fp_has_work(fp) == 0) 1053 qed_sb_update_sb_idx(fp->sb_info); 1054 1055 /* Check for more work */ 1056 rmb(); 1057 1058 if (qedi_fp_has_work(fp) == 0) 1059 qed_sb_ack(fp->sb_info, IGU_INT_ENABLE, 1); 1060 else 1061 goto process_again; 1062 1063 return IRQ_HANDLED; 1064 } 1065 1066 /* simd handler for MSI/INTa */ 1067 static void qedi_simd_int_handler(void *cookie) 1068 { 1069 /* Cookie is qedi_ctx struct */ 1070 struct qedi_ctx *qedi = (struct qedi_ctx *)cookie; 1071 1072 QEDI_WARN(&qedi->dbg_ctx, "qedi=%p.\n", qedi); 1073 } 1074 1075 #define QEDI_SIMD_HANDLER_NUM 0 1076 static void qedi_sync_free_irqs(struct qedi_ctx *qedi) 1077 { 1078 int i; 1079 1080 if (qedi->int_info.msix_cnt) { 1081 for (i = 0; i < qedi->int_info.used_cnt; i++) { 1082 synchronize_irq(qedi->int_info.msix[i].vector); 1083 irq_set_affinity_hint(qedi->int_info.msix[i].vector, 1084 NULL); 1085 free_irq(qedi->int_info.msix[i].vector, 1086 &qedi->fp_array[i]); 1087 } 1088 } else { 1089 qedi_ops->common->simd_handler_clean(qedi->cdev, 1090 QEDI_SIMD_HANDLER_NUM); 1091 } 1092 1093 qedi->int_info.used_cnt = 0; 1094 qedi_ops->common->set_fp_int(qedi->cdev, 0); 1095 } 1096 1097 static int qedi_request_msix_irq(struct qedi_ctx *qedi) 1098 { 1099 int i, rc, cpu; 1100 1101 cpu = cpumask_first(cpu_online_mask); 1102 for (i = 0; i < MIN_NUM_CPUS_MSIX(qedi); i++) { 1103 rc = request_irq(qedi->int_info.msix[i].vector, 1104 qedi_msix_handler, 0, "qedi", 1105 &qedi->fp_array[i]); 1106 1107 if (rc) { 1108 QEDI_WARN(&qedi->dbg_ctx, "request_irq failed.\n"); 1109 qedi_sync_free_irqs(qedi); 1110 return rc; 1111 } 1112 qedi->int_info.used_cnt++; 1113 rc = irq_set_affinity_hint(qedi->int_info.msix[i].vector, 1114 get_cpu_mask(cpu)); 1115 cpu = cpumask_next(cpu, cpu_online_mask); 1116 } 1117 1118 return 0; 1119 } 1120 1121 static int qedi_setup_int(struct qedi_ctx *qedi) 1122 { 1123 int rc = 0; 1124 1125 rc = qedi_ops->common->set_fp_int(qedi->cdev, num_online_cpus()); 1126 rc = qedi_ops->common->get_fp_int(qedi->cdev, &qedi->int_info); 1127 if (rc) 1128 goto exit_setup_int; 1129 1130 QEDI_INFO(&qedi->dbg_ctx, QEDI_LOG_DISC, 1131 "Number of msix_cnt = 0x%x num of cpus = 0x%x\n", 1132 qedi->int_info.msix_cnt, num_online_cpus()); 1133 1134 if (qedi->int_info.msix_cnt) { 1135 rc = qedi_request_msix_irq(qedi); 1136 goto exit_setup_int; 1137 } else { 1138 qedi_ops->common->simd_handler_config(qedi->cdev, &qedi, 1139 QEDI_SIMD_HANDLER_NUM, 1140 qedi_simd_int_handler); 1141 qedi->int_info.used_cnt = 1; 1142 } 1143 1144 exit_setup_int: 1145 return rc; 1146 } 1147 1148 static void qedi_free_nvm_iscsi_cfg(struct qedi_ctx *qedi) 1149 { 1150 if (qedi->iscsi_cfg) 1151 dma_free_coherent(&qedi->pdev->dev, 1152 sizeof(struct nvm_iscsi_cfg), 1153 qedi->iscsi_cfg, qedi->nvm_buf_dma); 1154 } 1155 1156 static int qedi_alloc_nvm_iscsi_cfg(struct qedi_ctx *qedi) 1157 { 1158 qedi->iscsi_cfg = dma_zalloc_coherent(&qedi->pdev->dev, 1159 sizeof(struct nvm_iscsi_cfg), 1160 &qedi->nvm_buf_dma, GFP_KERNEL); 1161 if (!qedi->iscsi_cfg) { 1162 QEDI_ERR(&qedi->dbg_ctx, "Could not allocate NVM BUF.\n"); 1163 return -ENOMEM; 1164 } 1165 QEDI_INFO(&qedi->dbg_ctx, QEDI_LOG_INFO, 1166 "NVM BUF addr=0x%p dma=0x%llx.\n", qedi->iscsi_cfg, 1167 qedi->nvm_buf_dma); 1168 1169 return 0; 1170 } 1171 1172 static void qedi_free_bdq(struct qedi_ctx *qedi) 1173 { 1174 int i; 1175 1176 if (qedi->bdq_pbl_list) 1177 dma_free_coherent(&qedi->pdev->dev, PAGE_SIZE, 1178 qedi->bdq_pbl_list, qedi->bdq_pbl_list_dma); 1179 1180 if (qedi->bdq_pbl) 1181 dma_free_coherent(&qedi->pdev->dev, qedi->bdq_pbl_mem_size, 1182 qedi->bdq_pbl, qedi->bdq_pbl_dma); 1183 1184 for (i = 0; i < QEDI_BDQ_NUM; i++) { 1185 if (qedi->bdq[i].buf_addr) { 1186 dma_free_coherent(&qedi->pdev->dev, QEDI_BDQ_BUF_SIZE, 1187 qedi->bdq[i].buf_addr, 1188 qedi->bdq[i].buf_dma); 1189 } 1190 } 1191 } 1192 1193 static void qedi_free_global_queues(struct qedi_ctx *qedi) 1194 { 1195 int i; 1196 struct global_queue **gl = qedi->global_queues; 1197 1198 for (i = 0; i < qedi->num_queues; i++) { 1199 if (!gl[i]) 1200 continue; 1201 1202 if (gl[i]->cq) 1203 dma_free_coherent(&qedi->pdev->dev, gl[i]->cq_mem_size, 1204 gl[i]->cq, gl[i]->cq_dma); 1205 if (gl[i]->cq_pbl) 1206 dma_free_coherent(&qedi->pdev->dev, gl[i]->cq_pbl_size, 1207 gl[i]->cq_pbl, gl[i]->cq_pbl_dma); 1208 1209 kfree(gl[i]); 1210 } 1211 qedi_free_bdq(qedi); 1212 qedi_free_nvm_iscsi_cfg(qedi); 1213 } 1214 1215 static int qedi_alloc_bdq(struct qedi_ctx *qedi) 1216 { 1217 int i; 1218 struct scsi_bd *pbl; 1219 u64 *list; 1220 dma_addr_t page; 1221 1222 /* Alloc dma memory for BDQ buffers */ 1223 for (i = 0; i < QEDI_BDQ_NUM; i++) { 1224 qedi->bdq[i].buf_addr = 1225 dma_alloc_coherent(&qedi->pdev->dev, 1226 QEDI_BDQ_BUF_SIZE, 1227 &qedi->bdq[i].buf_dma, 1228 GFP_KERNEL); 1229 if (!qedi->bdq[i].buf_addr) { 1230 QEDI_ERR(&qedi->dbg_ctx, 1231 "Could not allocate BDQ buffer %d.\n", i); 1232 return -ENOMEM; 1233 } 1234 } 1235 1236 /* Alloc dma memory for BDQ page buffer list */ 1237 qedi->bdq_pbl_mem_size = QEDI_BDQ_NUM * sizeof(struct scsi_bd); 1238 qedi->bdq_pbl_mem_size = ALIGN(qedi->bdq_pbl_mem_size, PAGE_SIZE); 1239 qedi->rq_num_entries = qedi->bdq_pbl_mem_size / sizeof(struct scsi_bd); 1240 1241 QEDI_INFO(&qedi->dbg_ctx, QEDI_LOG_CONN, "rq_num_entries = %d.\n", 1242 qedi->rq_num_entries); 1243 1244 qedi->bdq_pbl = dma_alloc_coherent(&qedi->pdev->dev, 1245 qedi->bdq_pbl_mem_size, 1246 &qedi->bdq_pbl_dma, GFP_KERNEL); 1247 if (!qedi->bdq_pbl) { 1248 QEDI_ERR(&qedi->dbg_ctx, "Could not allocate BDQ PBL.\n"); 1249 return -ENOMEM; 1250 } 1251 1252 /* 1253 * Populate BDQ PBL with physical and virtual address of individual 1254 * BDQ buffers 1255 */ 1256 pbl = (struct scsi_bd *)qedi->bdq_pbl; 1257 for (i = 0; i < QEDI_BDQ_NUM; i++) { 1258 pbl->address.hi = 1259 cpu_to_le32(QEDI_U64_HI(qedi->bdq[i].buf_dma)); 1260 pbl->address.lo = 1261 cpu_to_le32(QEDI_U64_LO(qedi->bdq[i].buf_dma)); 1262 QEDI_INFO(&qedi->dbg_ctx, QEDI_LOG_CONN, 1263 "pbl [0x%p] pbl->address hi [0x%llx] lo [0x%llx], idx [%d]\n", 1264 pbl, pbl->address.hi, pbl->address.lo, i); 1265 pbl->opaque.hi = 0; 1266 pbl->opaque.lo = cpu_to_le32(QEDI_U64_LO(i)); 1267 pbl++; 1268 } 1269 1270 /* Allocate list of PBL pages */ 1271 qedi->bdq_pbl_list = dma_alloc_coherent(&qedi->pdev->dev, 1272 PAGE_SIZE, 1273 &qedi->bdq_pbl_list_dma, 1274 GFP_KERNEL); 1275 if (!qedi->bdq_pbl_list) { 1276 QEDI_ERR(&qedi->dbg_ctx, 1277 "Could not allocate list of PBL pages.\n"); 1278 return -ENOMEM; 1279 } 1280 memset(qedi->bdq_pbl_list, 0, PAGE_SIZE); 1281 1282 /* 1283 * Now populate PBL list with pages that contain pointers to the 1284 * individual buffers. 1285 */ 1286 qedi->bdq_pbl_list_num_entries = qedi->bdq_pbl_mem_size / PAGE_SIZE; 1287 list = (u64 *)qedi->bdq_pbl_list; 1288 page = qedi->bdq_pbl_list_dma; 1289 for (i = 0; i < qedi->bdq_pbl_list_num_entries; i++) { 1290 *list = qedi->bdq_pbl_dma; 1291 list++; 1292 page += PAGE_SIZE; 1293 } 1294 1295 return 0; 1296 } 1297 1298 static int qedi_alloc_global_queues(struct qedi_ctx *qedi) 1299 { 1300 u32 *list; 1301 int i; 1302 int status = 0, rc; 1303 u32 *pbl; 1304 dma_addr_t page; 1305 int num_pages; 1306 1307 /* 1308 * Number of global queues (CQ / RQ). This should 1309 * be <= number of available MSIX vectors for the PF 1310 */ 1311 if (!qedi->num_queues) { 1312 QEDI_ERR(&qedi->dbg_ctx, "No MSI-X vectors available!\n"); 1313 return 1; 1314 } 1315 1316 /* Make sure we allocated the PBL that will contain the physical 1317 * addresses of our queues 1318 */ 1319 if (!qedi->p_cpuq) { 1320 status = 1; 1321 goto mem_alloc_failure; 1322 } 1323 1324 qedi->global_queues = kzalloc((sizeof(struct global_queue *) * 1325 qedi->num_queues), GFP_KERNEL); 1326 if (!qedi->global_queues) { 1327 QEDI_ERR(&qedi->dbg_ctx, 1328 "Unable to allocate global queues array ptr memory\n"); 1329 return -ENOMEM; 1330 } 1331 QEDI_INFO(&qedi->dbg_ctx, QEDI_LOG_DISC, 1332 "qedi->global_queues=%p.\n", qedi->global_queues); 1333 1334 /* Allocate DMA coherent buffers for BDQ */ 1335 rc = qedi_alloc_bdq(qedi); 1336 if (rc) 1337 goto mem_alloc_failure; 1338 1339 /* Allocate DMA coherent buffers for NVM_ISCSI_CFG */ 1340 rc = qedi_alloc_nvm_iscsi_cfg(qedi); 1341 if (rc) 1342 goto mem_alloc_failure; 1343 1344 /* Allocate a CQ and an associated PBL for each MSI-X 1345 * vector. 1346 */ 1347 for (i = 0; i < qedi->num_queues; i++) { 1348 qedi->global_queues[i] = 1349 kzalloc(sizeof(*qedi->global_queues[0]), 1350 GFP_KERNEL); 1351 if (!qedi->global_queues[i]) { 1352 QEDI_ERR(&qedi->dbg_ctx, 1353 "Unable to allocation global queue %d.\n", i); 1354 goto mem_alloc_failure; 1355 } 1356 1357 qedi->global_queues[i]->cq_mem_size = 1358 (QEDI_CQ_SIZE + 8) * sizeof(union iscsi_cqe); 1359 qedi->global_queues[i]->cq_mem_size = 1360 (qedi->global_queues[i]->cq_mem_size + 1361 (QEDI_PAGE_SIZE - 1)); 1362 1363 qedi->global_queues[i]->cq_pbl_size = 1364 (qedi->global_queues[i]->cq_mem_size / 1365 QEDI_PAGE_SIZE) * sizeof(void *); 1366 qedi->global_queues[i]->cq_pbl_size = 1367 (qedi->global_queues[i]->cq_pbl_size + 1368 (QEDI_PAGE_SIZE - 1)); 1369 1370 qedi->global_queues[i]->cq = 1371 dma_alloc_coherent(&qedi->pdev->dev, 1372 qedi->global_queues[i]->cq_mem_size, 1373 &qedi->global_queues[i]->cq_dma, 1374 GFP_KERNEL); 1375 1376 if (!qedi->global_queues[i]->cq) { 1377 QEDI_WARN(&qedi->dbg_ctx, 1378 "Could not allocate cq.\n"); 1379 status = -ENOMEM; 1380 goto mem_alloc_failure; 1381 } 1382 memset(qedi->global_queues[i]->cq, 0, 1383 qedi->global_queues[i]->cq_mem_size); 1384 1385 qedi->global_queues[i]->cq_pbl = 1386 dma_alloc_coherent(&qedi->pdev->dev, 1387 qedi->global_queues[i]->cq_pbl_size, 1388 &qedi->global_queues[i]->cq_pbl_dma, 1389 GFP_KERNEL); 1390 1391 if (!qedi->global_queues[i]->cq_pbl) { 1392 QEDI_WARN(&qedi->dbg_ctx, 1393 "Could not allocate cq PBL.\n"); 1394 status = -ENOMEM; 1395 goto mem_alloc_failure; 1396 } 1397 memset(qedi->global_queues[i]->cq_pbl, 0, 1398 qedi->global_queues[i]->cq_pbl_size); 1399 1400 /* Create PBL */ 1401 num_pages = qedi->global_queues[i]->cq_mem_size / 1402 QEDI_PAGE_SIZE; 1403 page = qedi->global_queues[i]->cq_dma; 1404 pbl = (u32 *)qedi->global_queues[i]->cq_pbl; 1405 1406 while (num_pages--) { 1407 *pbl = (u32)page; 1408 pbl++; 1409 *pbl = (u32)((u64)page >> 32); 1410 pbl++; 1411 page += QEDI_PAGE_SIZE; 1412 } 1413 } 1414 1415 list = (u32 *)qedi->p_cpuq; 1416 1417 /* 1418 * The list is built as follows: CQ#0 PBL pointer, RQ#0 PBL pointer, 1419 * CQ#1 PBL pointer, RQ#1 PBL pointer, etc. Each PBL pointer points 1420 * to the physical address which contains an array of pointers to the 1421 * physical addresses of the specific queue pages. 1422 */ 1423 for (i = 0; i < qedi->num_queues; i++) { 1424 *list = (u32)qedi->global_queues[i]->cq_pbl_dma; 1425 list++; 1426 *list = (u32)((u64)qedi->global_queues[i]->cq_pbl_dma >> 32); 1427 list++; 1428 1429 *list = (u32)0; 1430 list++; 1431 *list = (u32)((u64)0 >> 32); 1432 list++; 1433 } 1434 1435 return 0; 1436 1437 mem_alloc_failure: 1438 qedi_free_global_queues(qedi); 1439 return status; 1440 } 1441 1442 int qedi_alloc_sq(struct qedi_ctx *qedi, struct qedi_endpoint *ep) 1443 { 1444 int rval = 0; 1445 u32 *pbl; 1446 dma_addr_t page; 1447 int num_pages; 1448 1449 if (!ep) 1450 return -EIO; 1451 1452 /* Calculate appropriate queue and PBL sizes */ 1453 ep->sq_mem_size = QEDI_SQ_SIZE * sizeof(struct iscsi_wqe); 1454 ep->sq_mem_size += QEDI_PAGE_SIZE - 1; 1455 1456 ep->sq_pbl_size = (ep->sq_mem_size / QEDI_PAGE_SIZE) * sizeof(void *); 1457 ep->sq_pbl_size = ep->sq_pbl_size + QEDI_PAGE_SIZE; 1458 1459 ep->sq = dma_alloc_coherent(&qedi->pdev->dev, ep->sq_mem_size, 1460 &ep->sq_dma, GFP_KERNEL); 1461 if (!ep->sq) { 1462 QEDI_WARN(&qedi->dbg_ctx, 1463 "Could not allocate send queue.\n"); 1464 rval = -ENOMEM; 1465 goto out; 1466 } 1467 memset(ep->sq, 0, ep->sq_mem_size); 1468 1469 ep->sq_pbl = dma_alloc_coherent(&qedi->pdev->dev, ep->sq_pbl_size, 1470 &ep->sq_pbl_dma, GFP_KERNEL); 1471 if (!ep->sq_pbl) { 1472 QEDI_WARN(&qedi->dbg_ctx, 1473 "Could not allocate send queue PBL.\n"); 1474 rval = -ENOMEM; 1475 goto out_free_sq; 1476 } 1477 memset(ep->sq_pbl, 0, ep->sq_pbl_size); 1478 1479 /* Create PBL */ 1480 num_pages = ep->sq_mem_size / QEDI_PAGE_SIZE; 1481 page = ep->sq_dma; 1482 pbl = (u32 *)ep->sq_pbl; 1483 1484 while (num_pages--) { 1485 *pbl = (u32)page; 1486 pbl++; 1487 *pbl = (u32)((u64)page >> 32); 1488 pbl++; 1489 page += QEDI_PAGE_SIZE; 1490 } 1491 1492 return rval; 1493 1494 out_free_sq: 1495 dma_free_coherent(&qedi->pdev->dev, ep->sq_mem_size, ep->sq, 1496 ep->sq_dma); 1497 out: 1498 return rval; 1499 } 1500 1501 void qedi_free_sq(struct qedi_ctx *qedi, struct qedi_endpoint *ep) 1502 { 1503 if (ep->sq_pbl) 1504 dma_free_coherent(&qedi->pdev->dev, ep->sq_pbl_size, ep->sq_pbl, 1505 ep->sq_pbl_dma); 1506 if (ep->sq) 1507 dma_free_coherent(&qedi->pdev->dev, ep->sq_mem_size, ep->sq, 1508 ep->sq_dma); 1509 } 1510 1511 int qedi_get_task_idx(struct qedi_ctx *qedi) 1512 { 1513 s16 tmp_idx; 1514 1515 again: 1516 tmp_idx = find_first_zero_bit(qedi->task_idx_map, 1517 MAX_ISCSI_TASK_ENTRIES); 1518 1519 if (tmp_idx >= MAX_ISCSI_TASK_ENTRIES) { 1520 QEDI_ERR(&qedi->dbg_ctx, "FW task context pool is full.\n"); 1521 tmp_idx = -1; 1522 goto err_idx; 1523 } 1524 1525 if (test_and_set_bit(tmp_idx, qedi->task_idx_map)) 1526 goto again; 1527 1528 err_idx: 1529 return tmp_idx; 1530 } 1531 1532 void qedi_clear_task_idx(struct qedi_ctx *qedi, int idx) 1533 { 1534 if (!test_and_clear_bit(idx, qedi->task_idx_map)) 1535 QEDI_ERR(&qedi->dbg_ctx, 1536 "FW task context, already cleared, tid=0x%x\n", idx); 1537 } 1538 1539 void qedi_update_itt_map(struct qedi_ctx *qedi, u32 tid, u32 proto_itt, 1540 struct qedi_cmd *cmd) 1541 { 1542 qedi->itt_map[tid].itt = proto_itt; 1543 qedi->itt_map[tid].p_cmd = cmd; 1544 1545 QEDI_INFO(&qedi->dbg_ctx, QEDI_LOG_CONN, 1546 "update itt map tid=0x%x, with proto itt=0x%x\n", tid, 1547 qedi->itt_map[tid].itt); 1548 } 1549 1550 void qedi_get_task_tid(struct qedi_ctx *qedi, u32 itt, s16 *tid) 1551 { 1552 u16 i; 1553 1554 for (i = 0; i < MAX_ISCSI_TASK_ENTRIES; i++) { 1555 if (qedi->itt_map[i].itt == itt) { 1556 *tid = i; 1557 QEDI_INFO(&qedi->dbg_ctx, QEDI_LOG_CONN, 1558 "Ref itt=0x%x, found at tid=0x%x\n", 1559 itt, *tid); 1560 return; 1561 } 1562 } 1563 1564 WARN_ON(1); 1565 } 1566 1567 void qedi_get_proto_itt(struct qedi_ctx *qedi, u32 tid, u32 *proto_itt) 1568 { 1569 *proto_itt = qedi->itt_map[tid].itt; 1570 QEDI_INFO(&qedi->dbg_ctx, QEDI_LOG_CONN, 1571 "Get itt map tid [0x%x with proto itt[0x%x]", 1572 tid, *proto_itt); 1573 } 1574 1575 struct qedi_cmd *qedi_get_cmd_from_tid(struct qedi_ctx *qedi, u32 tid) 1576 { 1577 struct qedi_cmd *cmd = NULL; 1578 1579 if (tid >= MAX_ISCSI_TASK_ENTRIES) 1580 return NULL; 1581 1582 cmd = qedi->itt_map[tid].p_cmd; 1583 if (cmd->task_id != tid) 1584 return NULL; 1585 1586 qedi->itt_map[tid].p_cmd = NULL; 1587 1588 return cmd; 1589 } 1590 1591 static int qedi_alloc_itt(struct qedi_ctx *qedi) 1592 { 1593 qedi->itt_map = kcalloc(MAX_ISCSI_TASK_ENTRIES, 1594 sizeof(struct qedi_itt_map), GFP_KERNEL); 1595 if (!qedi->itt_map) { 1596 QEDI_ERR(&qedi->dbg_ctx, 1597 "Unable to allocate itt map array memory\n"); 1598 return -ENOMEM; 1599 } 1600 return 0; 1601 } 1602 1603 static void qedi_free_itt(struct qedi_ctx *qedi) 1604 { 1605 kfree(qedi->itt_map); 1606 } 1607 1608 static struct qed_ll2_cb_ops qedi_ll2_cb_ops = { 1609 .rx_cb = qedi_ll2_rx, 1610 .tx_cb = NULL, 1611 }; 1612 1613 static int qedi_percpu_io_thread(void *arg) 1614 { 1615 struct qedi_percpu_s *p = arg; 1616 struct qedi_work *work, *tmp; 1617 unsigned long flags; 1618 LIST_HEAD(work_list); 1619 1620 set_user_nice(current, -20); 1621 1622 while (!kthread_should_stop()) { 1623 spin_lock_irqsave(&p->p_work_lock, flags); 1624 while (!list_empty(&p->work_list)) { 1625 list_splice_init(&p->work_list, &work_list); 1626 spin_unlock_irqrestore(&p->p_work_lock, flags); 1627 1628 list_for_each_entry_safe(work, tmp, &work_list, list) { 1629 list_del_init(&work->list); 1630 qedi_fp_process_cqes(work); 1631 if (!work->is_solicited) 1632 kfree(work); 1633 } 1634 cond_resched(); 1635 spin_lock_irqsave(&p->p_work_lock, flags); 1636 } 1637 set_current_state(TASK_INTERRUPTIBLE); 1638 spin_unlock_irqrestore(&p->p_work_lock, flags); 1639 schedule(); 1640 } 1641 __set_current_state(TASK_RUNNING); 1642 1643 return 0; 1644 } 1645 1646 static int qedi_cpu_online(unsigned int cpu) 1647 { 1648 struct qedi_percpu_s *p = this_cpu_ptr(&qedi_percpu); 1649 struct task_struct *thread; 1650 1651 thread = kthread_create_on_node(qedi_percpu_io_thread, (void *)p, 1652 cpu_to_node(cpu), 1653 "qedi_thread/%d", cpu); 1654 if (IS_ERR(thread)) 1655 return PTR_ERR(thread); 1656 1657 kthread_bind(thread, cpu); 1658 p->iothread = thread; 1659 wake_up_process(thread); 1660 return 0; 1661 } 1662 1663 static int qedi_cpu_offline(unsigned int cpu) 1664 { 1665 struct qedi_percpu_s *p = this_cpu_ptr(&qedi_percpu); 1666 struct qedi_work *work, *tmp; 1667 struct task_struct *thread; 1668 1669 spin_lock_bh(&p->p_work_lock); 1670 thread = p->iothread; 1671 p->iothread = NULL; 1672 1673 list_for_each_entry_safe(work, tmp, &p->work_list, list) { 1674 list_del_init(&work->list); 1675 qedi_fp_process_cqes(work); 1676 if (!work->is_solicited) 1677 kfree(work); 1678 } 1679 1680 spin_unlock_bh(&p->p_work_lock); 1681 if (thread) 1682 kthread_stop(thread); 1683 return 0; 1684 } 1685 1686 void qedi_reset_host_mtu(struct qedi_ctx *qedi, u16 mtu) 1687 { 1688 struct qed_ll2_params params; 1689 1690 qedi_recover_all_conns(qedi); 1691 1692 qedi_ops->ll2->stop(qedi->cdev); 1693 qedi_ll2_free_skbs(qedi); 1694 1695 QEDI_INFO(&qedi->dbg_ctx, QEDI_LOG_INFO, "old MTU %u, new MTU %u\n", 1696 qedi->ll2_mtu, mtu); 1697 memset(¶ms, 0, sizeof(params)); 1698 qedi->ll2_mtu = mtu; 1699 params.mtu = qedi->ll2_mtu + IPV6_HDR_LEN + TCP_HDR_LEN; 1700 params.drop_ttl0_packets = 0; 1701 params.rx_vlan_stripping = 1; 1702 ether_addr_copy(params.ll2_mac_address, qedi->dev_info.common.hw_mac); 1703 qedi_ops->ll2->start(qedi->cdev, ¶ms); 1704 } 1705 1706 /** 1707 * qedi_get_nvram_block: - Scan through the iSCSI NVRAM block (while accounting 1708 * for gaps) for the matching absolute-pf-id of the QEDI device. 1709 */ 1710 static struct nvm_iscsi_block * 1711 qedi_get_nvram_block(struct qedi_ctx *qedi) 1712 { 1713 int i; 1714 u8 pf; 1715 u32 flags; 1716 struct nvm_iscsi_block *block; 1717 1718 pf = qedi->dev_info.common.abs_pf_id; 1719 block = &qedi->iscsi_cfg->block[0]; 1720 for (i = 0; i < NUM_OF_ISCSI_PF_SUPPORTED; i++, block++) { 1721 flags = ((block->id) & NVM_ISCSI_CFG_BLK_CTRL_FLAG_MASK) >> 1722 NVM_ISCSI_CFG_BLK_CTRL_FLAG_OFFSET; 1723 if (flags & (NVM_ISCSI_CFG_BLK_CTRL_FLAG_IS_NOT_EMPTY | 1724 NVM_ISCSI_CFG_BLK_CTRL_FLAG_PF_MAPPED) && 1725 (pf == (block->id & NVM_ISCSI_CFG_BLK_MAPPED_PF_ID_MASK) 1726 >> NVM_ISCSI_CFG_BLK_MAPPED_PF_ID_OFFSET)) 1727 return block; 1728 } 1729 return NULL; 1730 } 1731 1732 static ssize_t qedi_show_boot_eth_info(void *data, int type, char *buf) 1733 { 1734 struct qedi_ctx *qedi = data; 1735 struct nvm_iscsi_initiator *initiator; 1736 char *str = buf; 1737 int rc = 1; 1738 u32 ipv6_en, dhcp_en, ip_len; 1739 struct nvm_iscsi_block *block; 1740 char *fmt, *ip, *sub, *gw; 1741 1742 block = qedi_get_nvram_block(qedi); 1743 if (!block) 1744 return 0; 1745 1746 initiator = &block->initiator; 1747 ipv6_en = block->generic.ctrl_flags & 1748 NVM_ISCSI_CFG_GEN_IPV6_ENABLED; 1749 dhcp_en = block->generic.ctrl_flags & 1750 NVM_ISCSI_CFG_GEN_DHCP_TCPIP_CONFIG_ENABLED; 1751 /* Static IP assignments. */ 1752 fmt = ipv6_en ? "%pI6\n" : "%pI4\n"; 1753 ip = ipv6_en ? initiator->ipv6.addr.byte : initiator->ipv4.addr.byte; 1754 ip_len = ipv6_en ? IPV6_LEN : IPV4_LEN; 1755 sub = ipv6_en ? initiator->ipv6.subnet_mask.byte : 1756 initiator->ipv4.subnet_mask.byte; 1757 gw = ipv6_en ? initiator->ipv6.gateway.byte : 1758 initiator->ipv4.gateway.byte; 1759 /* DHCP IP adjustments. */ 1760 fmt = dhcp_en ? "%s\n" : fmt; 1761 if (dhcp_en) { 1762 ip = ipv6_en ? "0::0" : "0.0.0.0"; 1763 sub = ip; 1764 gw = ip; 1765 ip_len = ipv6_en ? 5 : 8; 1766 } 1767 1768 switch (type) { 1769 case ISCSI_BOOT_ETH_IP_ADDR: 1770 rc = snprintf(str, ip_len, fmt, ip); 1771 break; 1772 case ISCSI_BOOT_ETH_SUBNET_MASK: 1773 rc = snprintf(str, ip_len, fmt, sub); 1774 break; 1775 case ISCSI_BOOT_ETH_GATEWAY: 1776 rc = snprintf(str, ip_len, fmt, gw); 1777 break; 1778 case ISCSI_BOOT_ETH_FLAGS: 1779 rc = snprintf(str, 3, "%hhd\n", 1780 SYSFS_FLAG_FW_SEL_BOOT); 1781 break; 1782 case ISCSI_BOOT_ETH_INDEX: 1783 rc = snprintf(str, 3, "0\n"); 1784 break; 1785 case ISCSI_BOOT_ETH_MAC: 1786 rc = sysfs_format_mac(str, qedi->mac, ETH_ALEN); 1787 break; 1788 case ISCSI_BOOT_ETH_VLAN: 1789 rc = snprintf(str, 12, "%d\n", 1790 GET_FIELD2(initiator->generic_cont0, 1791 NVM_ISCSI_CFG_INITIATOR_VLAN)); 1792 break; 1793 case ISCSI_BOOT_ETH_ORIGIN: 1794 if (dhcp_en) 1795 rc = snprintf(str, 3, "3\n"); 1796 break; 1797 default: 1798 rc = 0; 1799 break; 1800 } 1801 1802 return rc; 1803 } 1804 1805 static umode_t qedi_eth_get_attr_visibility(void *data, int type) 1806 { 1807 int rc = 1; 1808 1809 switch (type) { 1810 case ISCSI_BOOT_ETH_FLAGS: 1811 case ISCSI_BOOT_ETH_MAC: 1812 case ISCSI_BOOT_ETH_INDEX: 1813 case ISCSI_BOOT_ETH_IP_ADDR: 1814 case ISCSI_BOOT_ETH_SUBNET_MASK: 1815 case ISCSI_BOOT_ETH_GATEWAY: 1816 case ISCSI_BOOT_ETH_ORIGIN: 1817 case ISCSI_BOOT_ETH_VLAN: 1818 rc = 0444; 1819 break; 1820 default: 1821 rc = 0; 1822 break; 1823 } 1824 return rc; 1825 } 1826 1827 static ssize_t qedi_show_boot_ini_info(void *data, int type, char *buf) 1828 { 1829 struct qedi_ctx *qedi = data; 1830 struct nvm_iscsi_initiator *initiator; 1831 char *str = buf; 1832 int rc; 1833 struct nvm_iscsi_block *block; 1834 1835 block = qedi_get_nvram_block(qedi); 1836 if (!block) 1837 return 0; 1838 1839 initiator = &block->initiator; 1840 1841 switch (type) { 1842 case ISCSI_BOOT_INI_INITIATOR_NAME: 1843 rc = snprintf(str, NVM_ISCSI_CFG_ISCSI_NAME_MAX_LEN, "%s\n", 1844 initiator->initiator_name.byte); 1845 break; 1846 default: 1847 rc = 0; 1848 break; 1849 } 1850 return rc; 1851 } 1852 1853 static umode_t qedi_ini_get_attr_visibility(void *data, int type) 1854 { 1855 int rc; 1856 1857 switch (type) { 1858 case ISCSI_BOOT_INI_INITIATOR_NAME: 1859 rc = 0444; 1860 break; 1861 default: 1862 rc = 0; 1863 break; 1864 } 1865 return rc; 1866 } 1867 1868 static ssize_t 1869 qedi_show_boot_tgt_info(struct qedi_ctx *qedi, int type, 1870 char *buf, enum qedi_nvm_tgts idx) 1871 { 1872 char *str = buf; 1873 int rc = 1; 1874 u32 ctrl_flags, ipv6_en, chap_en, mchap_en, ip_len; 1875 struct nvm_iscsi_block *block; 1876 char *chap_name, *chap_secret; 1877 char *mchap_name, *mchap_secret; 1878 1879 block = qedi_get_nvram_block(qedi); 1880 if (!block) 1881 goto exit_show_tgt_info; 1882 1883 QEDI_INFO(&qedi->dbg_ctx, QEDI_LOG_EVT, 1884 "Port:%d, tgt_idx:%d\n", 1885 GET_FIELD2(block->id, NVM_ISCSI_CFG_BLK_MAPPED_PF_ID), idx); 1886 1887 ctrl_flags = block->target[idx].ctrl_flags & 1888 NVM_ISCSI_CFG_TARGET_ENABLED; 1889 1890 if (!ctrl_flags) { 1891 QEDI_INFO(&qedi->dbg_ctx, QEDI_LOG_EVT, 1892 "Target disabled\n"); 1893 goto exit_show_tgt_info; 1894 } 1895 1896 ipv6_en = block->generic.ctrl_flags & 1897 NVM_ISCSI_CFG_GEN_IPV6_ENABLED; 1898 ip_len = ipv6_en ? IPV6_LEN : IPV4_LEN; 1899 chap_en = block->generic.ctrl_flags & 1900 NVM_ISCSI_CFG_GEN_CHAP_ENABLED; 1901 chap_name = chap_en ? block->initiator.chap_name.byte : NULL; 1902 chap_secret = chap_en ? block->initiator.chap_password.byte : NULL; 1903 1904 mchap_en = block->generic.ctrl_flags & 1905 NVM_ISCSI_CFG_GEN_CHAP_MUTUAL_ENABLED; 1906 mchap_name = mchap_en ? block->target[idx].chap_name.byte : NULL; 1907 mchap_secret = mchap_en ? block->target[idx].chap_password.byte : NULL; 1908 1909 switch (type) { 1910 case ISCSI_BOOT_TGT_NAME: 1911 rc = snprintf(str, NVM_ISCSI_CFG_ISCSI_NAME_MAX_LEN, "%s\n", 1912 block->target[idx].target_name.byte); 1913 break; 1914 case ISCSI_BOOT_TGT_IP_ADDR: 1915 if (ipv6_en) 1916 rc = snprintf(str, ip_len, "%pI6\n", 1917 block->target[idx].ipv6_addr.byte); 1918 else 1919 rc = snprintf(str, ip_len, "%pI4\n", 1920 block->target[idx].ipv4_addr.byte); 1921 break; 1922 case ISCSI_BOOT_TGT_PORT: 1923 rc = snprintf(str, 12, "%d\n", 1924 GET_FIELD2(block->target[idx].generic_cont0, 1925 NVM_ISCSI_CFG_TARGET_TCP_PORT)); 1926 break; 1927 case ISCSI_BOOT_TGT_LUN: 1928 rc = snprintf(str, 22, "%.*d\n", 1929 block->target[idx].lun.value[1], 1930 block->target[idx].lun.value[0]); 1931 break; 1932 case ISCSI_BOOT_TGT_CHAP_NAME: 1933 rc = snprintf(str, NVM_ISCSI_CFG_CHAP_NAME_MAX_LEN, "%s\n", 1934 chap_name); 1935 break; 1936 case ISCSI_BOOT_TGT_CHAP_SECRET: 1937 rc = snprintf(str, NVM_ISCSI_CFG_CHAP_PWD_MAX_LEN, "%s\n", 1938 chap_secret); 1939 break; 1940 case ISCSI_BOOT_TGT_REV_CHAP_NAME: 1941 rc = snprintf(str, NVM_ISCSI_CFG_CHAP_NAME_MAX_LEN, "%s\n", 1942 mchap_name); 1943 break; 1944 case ISCSI_BOOT_TGT_REV_CHAP_SECRET: 1945 rc = snprintf(str, NVM_ISCSI_CFG_CHAP_PWD_MAX_LEN, "%s\n", 1946 mchap_secret); 1947 break; 1948 case ISCSI_BOOT_TGT_FLAGS: 1949 rc = snprintf(str, 3, "%hhd\n", SYSFS_FLAG_FW_SEL_BOOT); 1950 break; 1951 case ISCSI_BOOT_TGT_NIC_ASSOC: 1952 rc = snprintf(str, 3, "0\n"); 1953 break; 1954 default: 1955 rc = 0; 1956 break; 1957 } 1958 1959 exit_show_tgt_info: 1960 return rc; 1961 } 1962 1963 static ssize_t qedi_show_boot_tgt_pri_info(void *data, int type, char *buf) 1964 { 1965 struct qedi_ctx *qedi = data; 1966 1967 return qedi_show_boot_tgt_info(qedi, type, buf, QEDI_NVM_TGT_PRI); 1968 } 1969 1970 static ssize_t qedi_show_boot_tgt_sec_info(void *data, int type, char *buf) 1971 { 1972 struct qedi_ctx *qedi = data; 1973 1974 return qedi_show_boot_tgt_info(qedi, type, buf, QEDI_NVM_TGT_SEC); 1975 } 1976 1977 static umode_t qedi_tgt_get_attr_visibility(void *data, int type) 1978 { 1979 int rc; 1980 1981 switch (type) { 1982 case ISCSI_BOOT_TGT_NAME: 1983 case ISCSI_BOOT_TGT_IP_ADDR: 1984 case ISCSI_BOOT_TGT_PORT: 1985 case ISCSI_BOOT_TGT_LUN: 1986 case ISCSI_BOOT_TGT_CHAP_NAME: 1987 case ISCSI_BOOT_TGT_CHAP_SECRET: 1988 case ISCSI_BOOT_TGT_REV_CHAP_NAME: 1989 case ISCSI_BOOT_TGT_REV_CHAP_SECRET: 1990 case ISCSI_BOOT_TGT_NIC_ASSOC: 1991 case ISCSI_BOOT_TGT_FLAGS: 1992 rc = 0444; 1993 break; 1994 default: 1995 rc = 0; 1996 break; 1997 } 1998 return rc; 1999 } 2000 2001 static void qedi_boot_release(void *data) 2002 { 2003 struct qedi_ctx *qedi = data; 2004 2005 scsi_host_put(qedi->shost); 2006 } 2007 2008 static int qedi_get_boot_info(struct qedi_ctx *qedi) 2009 { 2010 int ret = 1; 2011 u16 len; 2012 2013 len = sizeof(struct nvm_iscsi_cfg); 2014 2015 QEDI_INFO(&qedi->dbg_ctx, QEDI_LOG_INFO, 2016 "Get NVM iSCSI CFG image\n"); 2017 ret = qedi_ops->common->nvm_get_image(qedi->cdev, 2018 QED_NVM_IMAGE_ISCSI_CFG, 2019 (char *)qedi->iscsi_cfg, len); 2020 if (ret) 2021 QEDI_ERR(&qedi->dbg_ctx, 2022 "Could not get NVM image. ret = %d\n", ret); 2023 2024 return ret; 2025 } 2026 2027 static int qedi_setup_boot_info(struct qedi_ctx *qedi) 2028 { 2029 struct iscsi_boot_kobj *boot_kobj; 2030 2031 if (qedi_get_boot_info(qedi)) 2032 return -EPERM; 2033 2034 qedi->boot_kset = iscsi_boot_create_host_kset(qedi->shost->host_no); 2035 if (!qedi->boot_kset) 2036 goto kset_free; 2037 2038 if (!scsi_host_get(qedi->shost)) 2039 goto kset_free; 2040 2041 boot_kobj = iscsi_boot_create_target(qedi->boot_kset, 0, qedi, 2042 qedi_show_boot_tgt_pri_info, 2043 qedi_tgt_get_attr_visibility, 2044 qedi_boot_release); 2045 if (!boot_kobj) 2046 goto put_host; 2047 2048 if (!scsi_host_get(qedi->shost)) 2049 goto kset_free; 2050 2051 boot_kobj = iscsi_boot_create_target(qedi->boot_kset, 1, qedi, 2052 qedi_show_boot_tgt_sec_info, 2053 qedi_tgt_get_attr_visibility, 2054 qedi_boot_release); 2055 if (!boot_kobj) 2056 goto put_host; 2057 2058 if (!scsi_host_get(qedi->shost)) 2059 goto kset_free; 2060 2061 boot_kobj = iscsi_boot_create_initiator(qedi->boot_kset, 0, qedi, 2062 qedi_show_boot_ini_info, 2063 qedi_ini_get_attr_visibility, 2064 qedi_boot_release); 2065 if (!boot_kobj) 2066 goto put_host; 2067 2068 if (!scsi_host_get(qedi->shost)) 2069 goto kset_free; 2070 2071 boot_kobj = iscsi_boot_create_ethernet(qedi->boot_kset, 0, qedi, 2072 qedi_show_boot_eth_info, 2073 qedi_eth_get_attr_visibility, 2074 qedi_boot_release); 2075 if (!boot_kobj) 2076 goto put_host; 2077 2078 return 0; 2079 2080 put_host: 2081 scsi_host_put(qedi->shost); 2082 kset_free: 2083 iscsi_boot_destroy_kset(qedi->boot_kset); 2084 return -ENOMEM; 2085 } 2086 2087 static void __qedi_remove(struct pci_dev *pdev, int mode) 2088 { 2089 struct qedi_ctx *qedi = pci_get_drvdata(pdev); 2090 2091 if (qedi->tmf_thread) { 2092 flush_workqueue(qedi->tmf_thread); 2093 destroy_workqueue(qedi->tmf_thread); 2094 qedi->tmf_thread = NULL; 2095 } 2096 2097 if (qedi->offload_thread) { 2098 flush_workqueue(qedi->offload_thread); 2099 destroy_workqueue(qedi->offload_thread); 2100 qedi->offload_thread = NULL; 2101 } 2102 2103 #ifdef CONFIG_DEBUG_FS 2104 qedi_dbg_host_exit(&qedi->dbg_ctx); 2105 #endif 2106 if (!test_bit(QEDI_IN_OFFLINE, &qedi->flags)) 2107 qedi_ops->common->set_power_state(qedi->cdev, PCI_D0); 2108 2109 qedi_sync_free_irqs(qedi); 2110 2111 if (!test_bit(QEDI_IN_OFFLINE, &qedi->flags)) { 2112 qedi_ops->stop(qedi->cdev); 2113 qedi_ops->ll2->stop(qedi->cdev); 2114 } 2115 2116 if (mode == QEDI_MODE_NORMAL) 2117 qedi_free_iscsi_pf_param(qedi); 2118 2119 if (!test_bit(QEDI_IN_OFFLINE, &qedi->flags)) { 2120 qedi_ops->common->slowpath_stop(qedi->cdev); 2121 qedi_ops->common->remove(qedi->cdev); 2122 } 2123 2124 qedi_destroy_fp(qedi); 2125 2126 if (mode == QEDI_MODE_NORMAL) { 2127 qedi_release_cid_que(qedi); 2128 qedi_cm_free_mem(qedi); 2129 qedi_free_uio(qedi->udev); 2130 qedi_free_itt(qedi); 2131 2132 iscsi_host_remove(qedi->shost); 2133 iscsi_host_free(qedi->shost); 2134 2135 if (qedi->ll2_recv_thread) { 2136 kthread_stop(qedi->ll2_recv_thread); 2137 qedi->ll2_recv_thread = NULL; 2138 } 2139 qedi_ll2_free_skbs(qedi); 2140 2141 if (qedi->boot_kset) 2142 iscsi_boot_destroy_kset(qedi->boot_kset); 2143 } 2144 } 2145 2146 static int __qedi_probe(struct pci_dev *pdev, int mode) 2147 { 2148 struct qedi_ctx *qedi; 2149 struct qed_ll2_params params; 2150 u32 dp_module = 0; 2151 u8 dp_level = 0; 2152 bool is_vf = false; 2153 char host_buf[16]; 2154 struct qed_link_params link_params; 2155 struct qed_slowpath_params sp_params; 2156 struct qed_probe_params qed_params; 2157 void *task_start, *task_end; 2158 int rc; 2159 u16 tmp; 2160 2161 if (mode != QEDI_MODE_RECOVERY) { 2162 qedi = qedi_host_alloc(pdev); 2163 if (!qedi) { 2164 rc = -ENOMEM; 2165 goto exit_probe; 2166 } 2167 } else { 2168 qedi = pci_get_drvdata(pdev); 2169 } 2170 2171 memset(&qed_params, 0, sizeof(qed_params)); 2172 qed_params.protocol = QED_PROTOCOL_ISCSI; 2173 qed_params.dp_module = dp_module; 2174 qed_params.dp_level = dp_level; 2175 qed_params.is_vf = is_vf; 2176 qedi->cdev = qedi_ops->common->probe(pdev, &qed_params); 2177 if (!qedi->cdev) { 2178 rc = -ENODEV; 2179 QEDI_ERR(&qedi->dbg_ctx, "Cannot initialize hardware\n"); 2180 goto free_host; 2181 } 2182 2183 atomic_set(&qedi->link_state, QEDI_LINK_DOWN); 2184 2185 rc = qedi_ops->fill_dev_info(qedi->cdev, &qedi->dev_info); 2186 if (rc) 2187 goto free_host; 2188 2189 if (mode != QEDI_MODE_RECOVERY) { 2190 rc = qedi_set_iscsi_pf_param(qedi); 2191 if (rc) { 2192 rc = -ENOMEM; 2193 QEDI_ERR(&qedi->dbg_ctx, 2194 "Set iSCSI pf param fail\n"); 2195 goto free_host; 2196 } 2197 } 2198 2199 qedi_ops->common->update_pf_params(qedi->cdev, &qedi->pf_params); 2200 2201 rc = qedi_prepare_fp(qedi); 2202 if (rc) { 2203 QEDI_ERR(&qedi->dbg_ctx, "Cannot start slowpath.\n"); 2204 goto free_pf_params; 2205 } 2206 2207 /* Start the Slowpath-process */ 2208 memset(&sp_params, 0, sizeof(struct qed_slowpath_params)); 2209 sp_params.int_mode = QED_INT_MODE_MSIX; 2210 sp_params.drv_major = QEDI_DRIVER_MAJOR_VER; 2211 sp_params.drv_minor = QEDI_DRIVER_MINOR_VER; 2212 sp_params.drv_rev = QEDI_DRIVER_REV_VER; 2213 sp_params.drv_eng = QEDI_DRIVER_ENG_VER; 2214 strlcpy(sp_params.name, "qedi iSCSI", QED_DRV_VER_STR_SIZE); 2215 rc = qedi_ops->common->slowpath_start(qedi->cdev, &sp_params); 2216 if (rc) { 2217 QEDI_ERR(&qedi->dbg_ctx, "Cannot start slowpath\n"); 2218 goto stop_hw; 2219 } 2220 2221 /* update_pf_params needs to be called before and after slowpath 2222 * start 2223 */ 2224 qedi_ops->common->update_pf_params(qedi->cdev, &qedi->pf_params); 2225 2226 rc = qedi_setup_int(qedi); 2227 if (rc) 2228 goto stop_iscsi_func; 2229 2230 qedi_ops->common->set_power_state(qedi->cdev, PCI_D0); 2231 2232 /* Learn information crucial for qedi to progress */ 2233 rc = qedi_ops->fill_dev_info(qedi->cdev, &qedi->dev_info); 2234 if (rc) 2235 goto stop_iscsi_func; 2236 2237 /* Record BDQ producer doorbell addresses */ 2238 qedi->bdq_primary_prod = qedi->dev_info.primary_dbq_rq_addr; 2239 qedi->bdq_secondary_prod = qedi->dev_info.secondary_bdq_rq_addr; 2240 QEDI_INFO(&qedi->dbg_ctx, QEDI_LOG_DISC, 2241 "BDQ primary_prod=%p secondary_prod=%p.\n", 2242 qedi->bdq_primary_prod, 2243 qedi->bdq_secondary_prod); 2244 2245 /* 2246 * We need to write the number of BDs in the BDQ we've preallocated so 2247 * the f/w will do a prefetch and we'll get an unsolicited CQE when a 2248 * packet arrives. 2249 */ 2250 qedi->bdq_prod_idx = QEDI_BDQ_NUM; 2251 QEDI_INFO(&qedi->dbg_ctx, QEDI_LOG_DISC, 2252 "Writing %d to primary and secondary BDQ doorbell registers.\n", 2253 qedi->bdq_prod_idx); 2254 writew(qedi->bdq_prod_idx, qedi->bdq_primary_prod); 2255 tmp = readw(qedi->bdq_primary_prod); 2256 writew(qedi->bdq_prod_idx, qedi->bdq_secondary_prod); 2257 tmp = readw(qedi->bdq_secondary_prod); 2258 2259 ether_addr_copy(qedi->mac, qedi->dev_info.common.hw_mac); 2260 QEDI_INFO(&qedi->dbg_ctx, QEDI_LOG_DISC, "MAC address is %pM.\n", 2261 qedi->mac); 2262 2263 sprintf(host_buf, "host_%d", qedi->shost->host_no); 2264 qedi_ops->common->set_name(qedi->cdev, host_buf); 2265 2266 qedi_ops->register_ops(qedi->cdev, &qedi_cb_ops, qedi); 2267 2268 memset(¶ms, 0, sizeof(params)); 2269 params.mtu = DEF_PATH_MTU + IPV6_HDR_LEN + TCP_HDR_LEN; 2270 qedi->ll2_mtu = DEF_PATH_MTU; 2271 params.drop_ttl0_packets = 0; 2272 params.rx_vlan_stripping = 1; 2273 ether_addr_copy(params.ll2_mac_address, qedi->dev_info.common.hw_mac); 2274 2275 if (mode != QEDI_MODE_RECOVERY) { 2276 /* set up rx path */ 2277 INIT_LIST_HEAD(&qedi->ll2_skb_list); 2278 spin_lock_init(&qedi->ll2_lock); 2279 /* start qedi context */ 2280 spin_lock_init(&qedi->hba_lock); 2281 spin_lock_init(&qedi->task_idx_lock); 2282 } 2283 qedi_ops->ll2->register_cb_ops(qedi->cdev, &qedi_ll2_cb_ops, qedi); 2284 qedi_ops->ll2->start(qedi->cdev, ¶ms); 2285 2286 if (mode != QEDI_MODE_RECOVERY) { 2287 qedi->ll2_recv_thread = kthread_run(qedi_ll2_recv_thread, 2288 (void *)qedi, 2289 "qedi_ll2_thread"); 2290 } 2291 2292 rc = qedi_ops->start(qedi->cdev, &qedi->tasks, 2293 qedi, qedi_iscsi_event_cb); 2294 if (rc) { 2295 rc = -ENODEV; 2296 QEDI_ERR(&qedi->dbg_ctx, "Cannot start iSCSI function\n"); 2297 goto stop_slowpath; 2298 } 2299 2300 task_start = qedi_get_task_mem(&qedi->tasks, 0); 2301 task_end = qedi_get_task_mem(&qedi->tasks, MAX_TID_BLOCKS_ISCSI - 1); 2302 QEDI_INFO(&qedi->dbg_ctx, QEDI_LOG_DISC, 2303 "Task context start=%p, end=%p block_size=%u.\n", 2304 task_start, task_end, qedi->tasks.size); 2305 2306 memset(&link_params, 0, sizeof(link_params)); 2307 link_params.link_up = true; 2308 rc = qedi_ops->common->set_link(qedi->cdev, &link_params); 2309 if (rc) { 2310 QEDI_WARN(&qedi->dbg_ctx, "Link set up failed.\n"); 2311 atomic_set(&qedi->link_state, QEDI_LINK_DOWN); 2312 } 2313 2314 #ifdef CONFIG_DEBUG_FS 2315 qedi_dbg_host_init(&qedi->dbg_ctx, &qedi_debugfs_ops, 2316 &qedi_dbg_fops); 2317 #endif 2318 QEDI_INFO(&qedi->dbg_ctx, QEDI_LOG_INFO, 2319 "QLogic FastLinQ iSCSI Module qedi %s, FW %d.%d.%d.%d\n", 2320 QEDI_MODULE_VERSION, FW_MAJOR_VERSION, FW_MINOR_VERSION, 2321 FW_REVISION_VERSION, FW_ENGINEERING_VERSION); 2322 2323 if (mode == QEDI_MODE_NORMAL) { 2324 if (iscsi_host_add(qedi->shost, &pdev->dev)) { 2325 QEDI_ERR(&qedi->dbg_ctx, 2326 "Could not add iscsi host\n"); 2327 rc = -ENOMEM; 2328 goto remove_host; 2329 } 2330 2331 /* Allocate uio buffers */ 2332 rc = qedi_alloc_uio_rings(qedi); 2333 if (rc) { 2334 QEDI_ERR(&qedi->dbg_ctx, 2335 "UIO alloc ring failed err=%d\n", rc); 2336 goto remove_host; 2337 } 2338 2339 rc = qedi_init_uio(qedi); 2340 if (rc) { 2341 QEDI_ERR(&qedi->dbg_ctx, 2342 "UIO init failed, err=%d\n", rc); 2343 goto free_uio; 2344 } 2345 2346 /* host the array on iscsi_conn */ 2347 rc = qedi_setup_cid_que(qedi); 2348 if (rc) { 2349 QEDI_ERR(&qedi->dbg_ctx, 2350 "Could not setup cid que\n"); 2351 goto free_uio; 2352 } 2353 2354 rc = qedi_cm_alloc_mem(qedi); 2355 if (rc) { 2356 QEDI_ERR(&qedi->dbg_ctx, 2357 "Could not alloc cm memory\n"); 2358 goto free_cid_que; 2359 } 2360 2361 rc = qedi_alloc_itt(qedi); 2362 if (rc) { 2363 QEDI_ERR(&qedi->dbg_ctx, 2364 "Could not alloc itt memory\n"); 2365 goto free_cid_que; 2366 } 2367 2368 sprintf(host_buf, "host_%d", qedi->shost->host_no); 2369 qedi->tmf_thread = create_singlethread_workqueue(host_buf); 2370 if (!qedi->tmf_thread) { 2371 QEDI_ERR(&qedi->dbg_ctx, 2372 "Unable to start tmf thread!\n"); 2373 rc = -ENODEV; 2374 goto free_cid_que; 2375 } 2376 2377 sprintf(host_buf, "qedi_ofld%d", qedi->shost->host_no); 2378 qedi->offload_thread = create_workqueue(host_buf); 2379 if (!qedi->offload_thread) { 2380 QEDI_ERR(&qedi->dbg_ctx, 2381 "Unable to start offload thread!\n"); 2382 rc = -ENODEV; 2383 goto free_cid_que; 2384 } 2385 2386 /* F/w needs 1st task context memory entry for performance */ 2387 set_bit(QEDI_RESERVE_TASK_ID, qedi->task_idx_map); 2388 atomic_set(&qedi->num_offloads, 0); 2389 2390 if (qedi_setup_boot_info(qedi)) 2391 QEDI_ERR(&qedi->dbg_ctx, 2392 "No iSCSI boot target configured\n"); 2393 } 2394 2395 return 0; 2396 2397 free_cid_que: 2398 qedi_release_cid_que(qedi); 2399 free_uio: 2400 qedi_free_uio(qedi->udev); 2401 remove_host: 2402 #ifdef CONFIG_DEBUG_FS 2403 qedi_dbg_host_exit(&qedi->dbg_ctx); 2404 #endif 2405 iscsi_host_remove(qedi->shost); 2406 stop_iscsi_func: 2407 qedi_ops->stop(qedi->cdev); 2408 stop_slowpath: 2409 qedi_ops->common->slowpath_stop(qedi->cdev); 2410 stop_hw: 2411 qedi_ops->common->remove(qedi->cdev); 2412 free_pf_params: 2413 qedi_free_iscsi_pf_param(qedi); 2414 free_host: 2415 iscsi_host_free(qedi->shost); 2416 exit_probe: 2417 return rc; 2418 } 2419 2420 static int qedi_probe(struct pci_dev *pdev, const struct pci_device_id *id) 2421 { 2422 return __qedi_probe(pdev, QEDI_MODE_NORMAL); 2423 } 2424 2425 static void qedi_remove(struct pci_dev *pdev) 2426 { 2427 __qedi_remove(pdev, QEDI_MODE_NORMAL); 2428 } 2429 2430 static struct pci_device_id qedi_pci_tbl[] = { 2431 { PCI_DEVICE(PCI_VENDOR_ID_QLOGIC, 0x165E) }, 2432 { PCI_DEVICE(PCI_VENDOR_ID_QLOGIC, 0x8084) }, 2433 { 0 }, 2434 }; 2435 MODULE_DEVICE_TABLE(pci, qedi_pci_tbl); 2436 2437 static enum cpuhp_state qedi_cpuhp_state; 2438 2439 static struct pci_driver qedi_pci_driver = { 2440 .name = QEDI_MODULE_NAME, 2441 .id_table = qedi_pci_tbl, 2442 .probe = qedi_probe, 2443 .remove = qedi_remove, 2444 }; 2445 2446 static int __init qedi_init(void) 2447 { 2448 struct qedi_percpu_s *p; 2449 int cpu, rc = 0; 2450 2451 qedi_ops = qed_get_iscsi_ops(); 2452 if (!qedi_ops) { 2453 QEDI_ERR(NULL, "Failed to get qed iSCSI operations\n"); 2454 return -EINVAL; 2455 } 2456 2457 #ifdef CONFIG_DEBUG_FS 2458 qedi_dbg_init("qedi"); 2459 #endif 2460 2461 qedi_scsi_transport = iscsi_register_transport(&qedi_iscsi_transport); 2462 if (!qedi_scsi_transport) { 2463 QEDI_ERR(NULL, "Could not register qedi transport"); 2464 rc = -ENOMEM; 2465 goto exit_qedi_init_1; 2466 } 2467 2468 for_each_possible_cpu(cpu) { 2469 p = &per_cpu(qedi_percpu, cpu); 2470 INIT_LIST_HEAD(&p->work_list); 2471 spin_lock_init(&p->p_work_lock); 2472 p->iothread = NULL; 2473 } 2474 2475 rc = cpuhp_setup_state(CPUHP_AP_ONLINE_DYN, "scsi/qedi:online", 2476 qedi_cpu_online, qedi_cpu_offline); 2477 if (rc < 0) 2478 goto exit_qedi_init_2; 2479 qedi_cpuhp_state = rc; 2480 2481 rc = pci_register_driver(&qedi_pci_driver); 2482 if (rc) { 2483 QEDI_ERR(NULL, "Failed to register driver\n"); 2484 goto exit_qedi_hp; 2485 } 2486 2487 return 0; 2488 2489 exit_qedi_hp: 2490 cpuhp_remove_state(qedi_cpuhp_state); 2491 exit_qedi_init_2: 2492 iscsi_unregister_transport(&qedi_iscsi_transport); 2493 exit_qedi_init_1: 2494 #ifdef CONFIG_DEBUG_FS 2495 qedi_dbg_exit(); 2496 #endif 2497 qed_put_iscsi_ops(); 2498 return rc; 2499 } 2500 2501 static void __exit qedi_cleanup(void) 2502 { 2503 pci_unregister_driver(&qedi_pci_driver); 2504 cpuhp_remove_state(qedi_cpuhp_state); 2505 iscsi_unregister_transport(&qedi_iscsi_transport); 2506 2507 #ifdef CONFIG_DEBUG_FS 2508 qedi_dbg_exit(); 2509 #endif 2510 qed_put_iscsi_ops(); 2511 } 2512 2513 MODULE_DESCRIPTION("QLogic FastLinQ 4xxxx iSCSI Module"); 2514 MODULE_LICENSE("GPL"); 2515 MODULE_AUTHOR("QLogic Corporation"); 2516 MODULE_VERSION(QEDI_MODULE_VERSION); 2517 module_init(qedi_init); 2518 module_exit(qedi_cleanup); 2519