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 iscsi_eqe_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 iscsi_eqe_data *)fw_handle; 76 QEDI_INFO(&qedi->dbg_ctx, QEDI_LOG_INFO, 77 "icid=0x%x conn_id=0x%x err-code=0x%x error-pdu-opcode-reserved=0x%x\n", 78 data->icid, data->conn_id, data->error_code, 79 data->error_pdu_opcode_reserved); 80 81 qedi_ep = qedi->ep_tbl[data->icid]; 82 83 if (!qedi_ep) { 84 QEDI_WARN(&qedi->dbg_ctx, 85 "Cannot process event, ep already disconnected, cid=0x%x\n", 86 data->icid); 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_e4 *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_e4), &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; 861 862 err_alloc_mem: 863 return rval; 864 } 865 866 /* Free DMA coherent memory for array of queue pointers we pass to qed */ 867 static void qedi_free_iscsi_pf_param(struct qedi_ctx *qedi) 868 { 869 size_t size = 0; 870 871 if (qedi->p_cpuq) { 872 size = qedi->num_queues * sizeof(struct qedi_glbl_q_params); 873 pci_free_consistent(qedi->pdev, size, qedi->p_cpuq, 874 qedi->hw_p_cpuq); 875 } 876 877 qedi_free_global_queues(qedi); 878 879 kfree(qedi->global_queues); 880 } 881 882 static void qedi_link_update(void *dev, struct qed_link_output *link) 883 { 884 struct qedi_ctx *qedi = (struct qedi_ctx *)dev; 885 886 if (link->link_up) { 887 QEDI_INFO(&qedi->dbg_ctx, QEDI_LOG_INFO, "Link Up event.\n"); 888 atomic_set(&qedi->link_state, QEDI_LINK_UP); 889 } else { 890 QEDI_INFO(&qedi->dbg_ctx, QEDI_LOG_INFO, 891 "Link Down event.\n"); 892 atomic_set(&qedi->link_state, QEDI_LINK_DOWN); 893 } 894 } 895 896 static struct qed_iscsi_cb_ops qedi_cb_ops = { 897 { 898 .link_update = qedi_link_update, 899 } 900 }; 901 902 static int qedi_queue_cqe(struct qedi_ctx *qedi, union iscsi_cqe *cqe, 903 u16 que_idx, struct qedi_percpu_s *p) 904 { 905 struct qedi_work *qedi_work; 906 struct qedi_conn *q_conn; 907 struct iscsi_conn *conn; 908 struct qedi_cmd *qedi_cmd; 909 u32 iscsi_cid; 910 int rc = 0; 911 912 iscsi_cid = cqe->cqe_common.conn_id; 913 q_conn = qedi->cid_que.conn_cid_tbl[iscsi_cid]; 914 if (!q_conn) { 915 QEDI_WARN(&qedi->dbg_ctx, 916 "Session no longer exists for cid=0x%x!!\n", 917 iscsi_cid); 918 return -1; 919 } 920 conn = q_conn->cls_conn->dd_data; 921 922 switch (cqe->cqe_common.cqe_type) { 923 case ISCSI_CQE_TYPE_SOLICITED: 924 case ISCSI_CQE_TYPE_SOLICITED_WITH_SENSE: 925 qedi_cmd = qedi_get_cmd_from_tid(qedi, cqe->cqe_solicited.itid); 926 if (!qedi_cmd) { 927 rc = -1; 928 break; 929 } 930 INIT_LIST_HEAD(&qedi_cmd->cqe_work.list); 931 qedi_cmd->cqe_work.qedi = qedi; 932 memcpy(&qedi_cmd->cqe_work.cqe, cqe, sizeof(union iscsi_cqe)); 933 qedi_cmd->cqe_work.que_idx = que_idx; 934 qedi_cmd->cqe_work.is_solicited = true; 935 list_add_tail(&qedi_cmd->cqe_work.list, &p->work_list); 936 break; 937 case ISCSI_CQE_TYPE_UNSOLICITED: 938 case ISCSI_CQE_TYPE_DUMMY: 939 case ISCSI_CQE_TYPE_TASK_CLEANUP: 940 qedi_work = kzalloc(sizeof(*qedi_work), GFP_ATOMIC); 941 if (!qedi_work) { 942 rc = -1; 943 break; 944 } 945 INIT_LIST_HEAD(&qedi_work->list); 946 qedi_work->qedi = qedi; 947 memcpy(&qedi_work->cqe, cqe, sizeof(union iscsi_cqe)); 948 qedi_work->que_idx = que_idx; 949 qedi_work->is_solicited = false; 950 list_add_tail(&qedi_work->list, &p->work_list); 951 break; 952 default: 953 rc = -1; 954 QEDI_ERR(&qedi->dbg_ctx, "FW Error cqe.\n"); 955 } 956 return rc; 957 } 958 959 static bool qedi_process_completions(struct qedi_fastpath *fp) 960 { 961 struct qedi_ctx *qedi = fp->qedi; 962 struct qed_sb_info *sb_info = fp->sb_info; 963 struct status_block_e4 *sb = sb_info->sb_virt; 964 struct qedi_percpu_s *p = NULL; 965 struct global_queue *que; 966 u16 prod_idx; 967 unsigned long flags; 968 union iscsi_cqe *cqe; 969 int cpu; 970 int ret; 971 972 /* Get the current firmware producer index */ 973 prod_idx = sb->pi_array[QEDI_PROTO_CQ_PROD_IDX]; 974 975 if (prod_idx >= QEDI_CQ_SIZE) 976 prod_idx = prod_idx % QEDI_CQ_SIZE; 977 978 que = qedi->global_queues[fp->sb_id]; 979 QEDI_INFO(&qedi->dbg_ctx, QEDI_LOG_IO, 980 "Before: global queue=%p prod_idx=%d cons_idx=%d, sb_id=%d\n", 981 que, prod_idx, que->cq_cons_idx, fp->sb_id); 982 983 qedi->intr_cpu = fp->sb_id; 984 cpu = smp_processor_id(); 985 p = &per_cpu(qedi_percpu, cpu); 986 987 if (unlikely(!p->iothread)) 988 WARN_ON(1); 989 990 spin_lock_irqsave(&p->p_work_lock, flags); 991 while (que->cq_cons_idx != prod_idx) { 992 cqe = &que->cq[que->cq_cons_idx]; 993 994 QEDI_INFO(&qedi->dbg_ctx, QEDI_LOG_IO, 995 "cqe=%p prod_idx=%d cons_idx=%d.\n", 996 cqe, prod_idx, que->cq_cons_idx); 997 998 ret = qedi_queue_cqe(qedi, cqe, fp->sb_id, p); 999 if (ret) 1000 QEDI_WARN(&qedi->dbg_ctx, 1001 "Dropping CQE 0x%x for cid=0x%x.\n", 1002 que->cq_cons_idx, cqe->cqe_common.conn_id); 1003 1004 que->cq_cons_idx++; 1005 if (que->cq_cons_idx == QEDI_CQ_SIZE) 1006 que->cq_cons_idx = 0; 1007 } 1008 wake_up_process(p->iothread); 1009 spin_unlock_irqrestore(&p->p_work_lock, flags); 1010 1011 return true; 1012 } 1013 1014 static bool qedi_fp_has_work(struct qedi_fastpath *fp) 1015 { 1016 struct qedi_ctx *qedi = fp->qedi; 1017 struct global_queue *que; 1018 struct qed_sb_info *sb_info = fp->sb_info; 1019 struct status_block_e4 *sb = sb_info->sb_virt; 1020 u16 prod_idx; 1021 1022 barrier(); 1023 1024 /* Get the current firmware producer index */ 1025 prod_idx = sb->pi_array[QEDI_PROTO_CQ_PROD_IDX]; 1026 1027 /* Get the pointer to the global CQ this completion is on */ 1028 que = qedi->global_queues[fp->sb_id]; 1029 1030 /* prod idx wrap around uint16 */ 1031 if (prod_idx >= QEDI_CQ_SIZE) 1032 prod_idx = prod_idx % QEDI_CQ_SIZE; 1033 1034 return (que->cq_cons_idx != prod_idx); 1035 } 1036 1037 /* MSI-X fastpath handler code */ 1038 static irqreturn_t qedi_msix_handler(int irq, void *dev_id) 1039 { 1040 struct qedi_fastpath *fp = dev_id; 1041 struct qedi_ctx *qedi = fp->qedi; 1042 bool wake_io_thread = true; 1043 1044 qed_sb_ack(fp->sb_info, IGU_INT_DISABLE, 0); 1045 1046 process_again: 1047 wake_io_thread = qedi_process_completions(fp); 1048 if (wake_io_thread) { 1049 QEDI_INFO(&qedi->dbg_ctx, QEDI_LOG_DISC, 1050 "process already running\n"); 1051 } 1052 1053 if (qedi_fp_has_work(fp) == 0) 1054 qed_sb_update_sb_idx(fp->sb_info); 1055 1056 /* Check for more work */ 1057 rmb(); 1058 1059 if (qedi_fp_has_work(fp) == 0) 1060 qed_sb_ack(fp->sb_info, IGU_INT_ENABLE, 1); 1061 else 1062 goto process_again; 1063 1064 return IRQ_HANDLED; 1065 } 1066 1067 /* simd handler for MSI/INTa */ 1068 static void qedi_simd_int_handler(void *cookie) 1069 { 1070 /* Cookie is qedi_ctx struct */ 1071 struct qedi_ctx *qedi = (struct qedi_ctx *)cookie; 1072 1073 QEDI_WARN(&qedi->dbg_ctx, "qedi=%p.\n", qedi); 1074 } 1075 1076 #define QEDI_SIMD_HANDLER_NUM 0 1077 static void qedi_sync_free_irqs(struct qedi_ctx *qedi) 1078 { 1079 int i; 1080 1081 if (qedi->int_info.msix_cnt) { 1082 for (i = 0; i < qedi->int_info.used_cnt; i++) { 1083 synchronize_irq(qedi->int_info.msix[i].vector); 1084 irq_set_affinity_hint(qedi->int_info.msix[i].vector, 1085 NULL); 1086 free_irq(qedi->int_info.msix[i].vector, 1087 &qedi->fp_array[i]); 1088 } 1089 } else { 1090 qedi_ops->common->simd_handler_clean(qedi->cdev, 1091 QEDI_SIMD_HANDLER_NUM); 1092 } 1093 1094 qedi->int_info.used_cnt = 0; 1095 qedi_ops->common->set_fp_int(qedi->cdev, 0); 1096 } 1097 1098 static int qedi_request_msix_irq(struct qedi_ctx *qedi) 1099 { 1100 int i, rc, cpu; 1101 1102 cpu = cpumask_first(cpu_online_mask); 1103 for (i = 0; i < MIN_NUM_CPUS_MSIX(qedi); i++) { 1104 rc = request_irq(qedi->int_info.msix[i].vector, 1105 qedi_msix_handler, 0, "qedi", 1106 &qedi->fp_array[i]); 1107 1108 if (rc) { 1109 QEDI_WARN(&qedi->dbg_ctx, "request_irq failed.\n"); 1110 qedi_sync_free_irqs(qedi); 1111 return rc; 1112 } 1113 qedi->int_info.used_cnt++; 1114 rc = irq_set_affinity_hint(qedi->int_info.msix[i].vector, 1115 get_cpu_mask(cpu)); 1116 cpu = cpumask_next(cpu, cpu_online_mask); 1117 } 1118 1119 return 0; 1120 } 1121 1122 static int qedi_setup_int(struct qedi_ctx *qedi) 1123 { 1124 int rc = 0; 1125 1126 rc = qedi_ops->common->set_fp_int(qedi->cdev, num_online_cpus()); 1127 rc = qedi_ops->common->get_fp_int(qedi->cdev, &qedi->int_info); 1128 if (rc) 1129 goto exit_setup_int; 1130 1131 QEDI_INFO(&qedi->dbg_ctx, QEDI_LOG_DISC, 1132 "Number of msix_cnt = 0x%x num of cpus = 0x%x\n", 1133 qedi->int_info.msix_cnt, num_online_cpus()); 1134 1135 if (qedi->int_info.msix_cnt) { 1136 rc = qedi_request_msix_irq(qedi); 1137 goto exit_setup_int; 1138 } else { 1139 qedi_ops->common->simd_handler_config(qedi->cdev, &qedi, 1140 QEDI_SIMD_HANDLER_NUM, 1141 qedi_simd_int_handler); 1142 qedi->int_info.used_cnt = 1; 1143 } 1144 1145 exit_setup_int: 1146 return rc; 1147 } 1148 1149 static void qedi_free_nvm_iscsi_cfg(struct qedi_ctx *qedi) 1150 { 1151 if (qedi->iscsi_cfg) 1152 dma_free_coherent(&qedi->pdev->dev, 1153 sizeof(struct nvm_iscsi_cfg), 1154 qedi->iscsi_cfg, qedi->nvm_buf_dma); 1155 } 1156 1157 static int qedi_alloc_nvm_iscsi_cfg(struct qedi_ctx *qedi) 1158 { 1159 qedi->iscsi_cfg = dma_zalloc_coherent(&qedi->pdev->dev, 1160 sizeof(struct nvm_iscsi_cfg), 1161 &qedi->nvm_buf_dma, GFP_KERNEL); 1162 if (!qedi->iscsi_cfg) { 1163 QEDI_ERR(&qedi->dbg_ctx, "Could not allocate NVM BUF.\n"); 1164 return -ENOMEM; 1165 } 1166 QEDI_INFO(&qedi->dbg_ctx, QEDI_LOG_INFO, 1167 "NVM BUF addr=0x%p dma=0x%llx.\n", qedi->iscsi_cfg, 1168 qedi->nvm_buf_dma); 1169 1170 return 0; 1171 } 1172 1173 static void qedi_free_bdq(struct qedi_ctx *qedi) 1174 { 1175 int i; 1176 1177 if (qedi->bdq_pbl_list) 1178 dma_free_coherent(&qedi->pdev->dev, PAGE_SIZE, 1179 qedi->bdq_pbl_list, qedi->bdq_pbl_list_dma); 1180 1181 if (qedi->bdq_pbl) 1182 dma_free_coherent(&qedi->pdev->dev, qedi->bdq_pbl_mem_size, 1183 qedi->bdq_pbl, qedi->bdq_pbl_dma); 1184 1185 for (i = 0; i < QEDI_BDQ_NUM; i++) { 1186 if (qedi->bdq[i].buf_addr) { 1187 dma_free_coherent(&qedi->pdev->dev, QEDI_BDQ_BUF_SIZE, 1188 qedi->bdq[i].buf_addr, 1189 qedi->bdq[i].buf_dma); 1190 } 1191 } 1192 } 1193 1194 static void qedi_free_global_queues(struct qedi_ctx *qedi) 1195 { 1196 int i; 1197 struct global_queue **gl = qedi->global_queues; 1198 1199 for (i = 0; i < qedi->num_queues; i++) { 1200 if (!gl[i]) 1201 continue; 1202 1203 if (gl[i]->cq) 1204 dma_free_coherent(&qedi->pdev->dev, gl[i]->cq_mem_size, 1205 gl[i]->cq, gl[i]->cq_dma); 1206 if (gl[i]->cq_pbl) 1207 dma_free_coherent(&qedi->pdev->dev, gl[i]->cq_pbl_size, 1208 gl[i]->cq_pbl, gl[i]->cq_pbl_dma); 1209 1210 kfree(gl[i]); 1211 } 1212 qedi_free_bdq(qedi); 1213 qedi_free_nvm_iscsi_cfg(qedi); 1214 } 1215 1216 static int qedi_alloc_bdq(struct qedi_ctx *qedi) 1217 { 1218 int i; 1219 struct scsi_bd *pbl; 1220 u64 *list; 1221 dma_addr_t page; 1222 1223 /* Alloc dma memory for BDQ buffers */ 1224 for (i = 0; i < QEDI_BDQ_NUM; i++) { 1225 qedi->bdq[i].buf_addr = 1226 dma_alloc_coherent(&qedi->pdev->dev, 1227 QEDI_BDQ_BUF_SIZE, 1228 &qedi->bdq[i].buf_dma, 1229 GFP_KERNEL); 1230 if (!qedi->bdq[i].buf_addr) { 1231 QEDI_ERR(&qedi->dbg_ctx, 1232 "Could not allocate BDQ buffer %d.\n", i); 1233 return -ENOMEM; 1234 } 1235 } 1236 1237 /* Alloc dma memory for BDQ page buffer list */ 1238 qedi->bdq_pbl_mem_size = QEDI_BDQ_NUM * sizeof(struct scsi_bd); 1239 qedi->bdq_pbl_mem_size = ALIGN(qedi->bdq_pbl_mem_size, PAGE_SIZE); 1240 qedi->rq_num_entries = qedi->bdq_pbl_mem_size / sizeof(struct scsi_bd); 1241 1242 QEDI_INFO(&qedi->dbg_ctx, QEDI_LOG_CONN, "rq_num_entries = %d.\n", 1243 qedi->rq_num_entries); 1244 1245 qedi->bdq_pbl = dma_alloc_coherent(&qedi->pdev->dev, 1246 qedi->bdq_pbl_mem_size, 1247 &qedi->bdq_pbl_dma, GFP_KERNEL); 1248 if (!qedi->bdq_pbl) { 1249 QEDI_ERR(&qedi->dbg_ctx, "Could not allocate BDQ PBL.\n"); 1250 return -ENOMEM; 1251 } 1252 1253 /* 1254 * Populate BDQ PBL with physical and virtual address of individual 1255 * BDQ buffers 1256 */ 1257 pbl = (struct scsi_bd *)qedi->bdq_pbl; 1258 for (i = 0; i < QEDI_BDQ_NUM; i++) { 1259 pbl->address.hi = 1260 cpu_to_le32(QEDI_U64_HI(qedi->bdq[i].buf_dma)); 1261 pbl->address.lo = 1262 cpu_to_le32(QEDI_U64_LO(qedi->bdq[i].buf_dma)); 1263 QEDI_INFO(&qedi->dbg_ctx, QEDI_LOG_CONN, 1264 "pbl [0x%p] pbl->address hi [0x%llx] lo [0x%llx], idx [%d]\n", 1265 pbl, pbl->address.hi, pbl->address.lo, i); 1266 pbl->opaque.iscsi_opaque.reserved_zero[0] = 0; 1267 pbl->opaque.iscsi_opaque.reserved_zero[1] = 0; 1268 pbl->opaque.iscsi_opaque.reserved_zero[2] = 0; 1269 pbl->opaque.iscsi_opaque.opaque = cpu_to_le16(i); 1270 pbl++; 1271 } 1272 1273 /* Allocate list of PBL pages */ 1274 qedi->bdq_pbl_list = dma_zalloc_coherent(&qedi->pdev->dev, PAGE_SIZE, 1275 &qedi->bdq_pbl_list_dma, 1276 GFP_KERNEL); 1277 if (!qedi->bdq_pbl_list) { 1278 QEDI_ERR(&qedi->dbg_ctx, 1279 "Could not allocate list of PBL pages.\n"); 1280 return -ENOMEM; 1281 } 1282 1283 /* 1284 * Now populate PBL list with pages that contain pointers to the 1285 * individual buffers. 1286 */ 1287 qedi->bdq_pbl_list_num_entries = qedi->bdq_pbl_mem_size / PAGE_SIZE; 1288 list = (u64 *)qedi->bdq_pbl_list; 1289 page = qedi->bdq_pbl_list_dma; 1290 for (i = 0; i < qedi->bdq_pbl_list_num_entries; i++) { 1291 *list = qedi->bdq_pbl_dma; 1292 list++; 1293 page += PAGE_SIZE; 1294 } 1295 1296 return 0; 1297 } 1298 1299 static int qedi_alloc_global_queues(struct qedi_ctx *qedi) 1300 { 1301 u32 *list; 1302 int i; 1303 int status = 0, rc; 1304 u32 *pbl; 1305 dma_addr_t page; 1306 int num_pages; 1307 1308 /* 1309 * Number of global queues (CQ / RQ). This should 1310 * be <= number of available MSIX vectors for the PF 1311 */ 1312 if (!qedi->num_queues) { 1313 QEDI_ERR(&qedi->dbg_ctx, "No MSI-X vectors available!\n"); 1314 return 1; 1315 } 1316 1317 /* Make sure we allocated the PBL that will contain the physical 1318 * addresses of our queues 1319 */ 1320 if (!qedi->p_cpuq) { 1321 status = 1; 1322 goto mem_alloc_failure; 1323 } 1324 1325 qedi->global_queues = kzalloc((sizeof(struct global_queue *) * 1326 qedi->num_queues), GFP_KERNEL); 1327 if (!qedi->global_queues) { 1328 QEDI_ERR(&qedi->dbg_ctx, 1329 "Unable to allocate global queues array ptr memory\n"); 1330 return -ENOMEM; 1331 } 1332 QEDI_INFO(&qedi->dbg_ctx, QEDI_LOG_DISC, 1333 "qedi->global_queues=%p.\n", qedi->global_queues); 1334 1335 /* Allocate DMA coherent buffers for BDQ */ 1336 rc = qedi_alloc_bdq(qedi); 1337 if (rc) 1338 goto mem_alloc_failure; 1339 1340 /* Allocate DMA coherent buffers for NVM_ISCSI_CFG */ 1341 rc = qedi_alloc_nvm_iscsi_cfg(qedi); 1342 if (rc) 1343 goto mem_alloc_failure; 1344 1345 /* Allocate a CQ and an associated PBL for each MSI-X 1346 * vector. 1347 */ 1348 for (i = 0; i < qedi->num_queues; i++) { 1349 qedi->global_queues[i] = 1350 kzalloc(sizeof(*qedi->global_queues[0]), 1351 GFP_KERNEL); 1352 if (!qedi->global_queues[i]) { 1353 QEDI_ERR(&qedi->dbg_ctx, 1354 "Unable to allocation global queue %d.\n", i); 1355 goto mem_alloc_failure; 1356 } 1357 1358 qedi->global_queues[i]->cq_mem_size = 1359 (QEDI_CQ_SIZE + 8) * sizeof(union iscsi_cqe); 1360 qedi->global_queues[i]->cq_mem_size = 1361 (qedi->global_queues[i]->cq_mem_size + 1362 (QEDI_PAGE_SIZE - 1)); 1363 1364 qedi->global_queues[i]->cq_pbl_size = 1365 (qedi->global_queues[i]->cq_mem_size / 1366 QEDI_PAGE_SIZE) * sizeof(void *); 1367 qedi->global_queues[i]->cq_pbl_size = 1368 (qedi->global_queues[i]->cq_pbl_size + 1369 (QEDI_PAGE_SIZE - 1)); 1370 1371 qedi->global_queues[i]->cq = dma_zalloc_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 qedi->global_queues[i]->cq_pbl = dma_zalloc_coherent(&qedi->pdev->dev, 1383 qedi->global_queues[i]->cq_pbl_size, 1384 &qedi->global_queues[i]->cq_pbl_dma, 1385 GFP_KERNEL); 1386 1387 if (!qedi->global_queues[i]->cq_pbl) { 1388 QEDI_WARN(&qedi->dbg_ctx, 1389 "Could not allocate cq PBL.\n"); 1390 status = -ENOMEM; 1391 goto mem_alloc_failure; 1392 } 1393 1394 /* Create PBL */ 1395 num_pages = qedi->global_queues[i]->cq_mem_size / 1396 QEDI_PAGE_SIZE; 1397 page = qedi->global_queues[i]->cq_dma; 1398 pbl = (u32 *)qedi->global_queues[i]->cq_pbl; 1399 1400 while (num_pages--) { 1401 *pbl = (u32)page; 1402 pbl++; 1403 *pbl = (u32)((u64)page >> 32); 1404 pbl++; 1405 page += QEDI_PAGE_SIZE; 1406 } 1407 } 1408 1409 list = (u32 *)qedi->p_cpuq; 1410 1411 /* 1412 * The list is built as follows: CQ#0 PBL pointer, RQ#0 PBL pointer, 1413 * CQ#1 PBL pointer, RQ#1 PBL pointer, etc. Each PBL pointer points 1414 * to the physical address which contains an array of pointers to the 1415 * physical addresses of the specific queue pages. 1416 */ 1417 for (i = 0; i < qedi->num_queues; i++) { 1418 *list = (u32)qedi->global_queues[i]->cq_pbl_dma; 1419 list++; 1420 *list = (u32)((u64)qedi->global_queues[i]->cq_pbl_dma >> 32); 1421 list++; 1422 1423 *list = (u32)0; 1424 list++; 1425 *list = (u32)((u64)0 >> 32); 1426 list++; 1427 } 1428 1429 return 0; 1430 1431 mem_alloc_failure: 1432 qedi_free_global_queues(qedi); 1433 return status; 1434 } 1435 1436 int qedi_alloc_sq(struct qedi_ctx *qedi, struct qedi_endpoint *ep) 1437 { 1438 int rval = 0; 1439 u32 *pbl; 1440 dma_addr_t page; 1441 int num_pages; 1442 1443 if (!ep) 1444 return -EIO; 1445 1446 /* Calculate appropriate queue and PBL sizes */ 1447 ep->sq_mem_size = QEDI_SQ_SIZE * sizeof(struct iscsi_wqe); 1448 ep->sq_mem_size += QEDI_PAGE_SIZE - 1; 1449 1450 ep->sq_pbl_size = (ep->sq_mem_size / QEDI_PAGE_SIZE) * sizeof(void *); 1451 ep->sq_pbl_size = ep->sq_pbl_size + QEDI_PAGE_SIZE; 1452 1453 ep->sq = dma_zalloc_coherent(&qedi->pdev->dev, ep->sq_mem_size, 1454 &ep->sq_dma, GFP_KERNEL); 1455 if (!ep->sq) { 1456 QEDI_WARN(&qedi->dbg_ctx, 1457 "Could not allocate send queue.\n"); 1458 rval = -ENOMEM; 1459 goto out; 1460 } 1461 ep->sq_pbl = dma_zalloc_coherent(&qedi->pdev->dev, ep->sq_pbl_size, 1462 &ep->sq_pbl_dma, GFP_KERNEL); 1463 if (!ep->sq_pbl) { 1464 QEDI_WARN(&qedi->dbg_ctx, 1465 "Could not allocate send queue PBL.\n"); 1466 rval = -ENOMEM; 1467 goto out_free_sq; 1468 } 1469 1470 /* Create PBL */ 1471 num_pages = ep->sq_mem_size / QEDI_PAGE_SIZE; 1472 page = ep->sq_dma; 1473 pbl = (u32 *)ep->sq_pbl; 1474 1475 while (num_pages--) { 1476 *pbl = (u32)page; 1477 pbl++; 1478 *pbl = (u32)((u64)page >> 32); 1479 pbl++; 1480 page += QEDI_PAGE_SIZE; 1481 } 1482 1483 return rval; 1484 1485 out_free_sq: 1486 dma_free_coherent(&qedi->pdev->dev, ep->sq_mem_size, ep->sq, 1487 ep->sq_dma); 1488 out: 1489 return rval; 1490 } 1491 1492 void qedi_free_sq(struct qedi_ctx *qedi, struct qedi_endpoint *ep) 1493 { 1494 if (ep->sq_pbl) 1495 dma_free_coherent(&qedi->pdev->dev, ep->sq_pbl_size, ep->sq_pbl, 1496 ep->sq_pbl_dma); 1497 if (ep->sq) 1498 dma_free_coherent(&qedi->pdev->dev, ep->sq_mem_size, ep->sq, 1499 ep->sq_dma); 1500 } 1501 1502 int qedi_get_task_idx(struct qedi_ctx *qedi) 1503 { 1504 s16 tmp_idx; 1505 1506 again: 1507 tmp_idx = find_first_zero_bit(qedi->task_idx_map, 1508 MAX_ISCSI_TASK_ENTRIES); 1509 1510 if (tmp_idx >= MAX_ISCSI_TASK_ENTRIES) { 1511 QEDI_ERR(&qedi->dbg_ctx, "FW task context pool is full.\n"); 1512 tmp_idx = -1; 1513 goto err_idx; 1514 } 1515 1516 if (test_and_set_bit(tmp_idx, qedi->task_idx_map)) 1517 goto again; 1518 1519 err_idx: 1520 return tmp_idx; 1521 } 1522 1523 void qedi_clear_task_idx(struct qedi_ctx *qedi, int idx) 1524 { 1525 if (!test_and_clear_bit(idx, qedi->task_idx_map)) 1526 QEDI_ERR(&qedi->dbg_ctx, 1527 "FW task context, already cleared, tid=0x%x\n", idx); 1528 } 1529 1530 void qedi_update_itt_map(struct qedi_ctx *qedi, u32 tid, u32 proto_itt, 1531 struct qedi_cmd *cmd) 1532 { 1533 qedi->itt_map[tid].itt = proto_itt; 1534 qedi->itt_map[tid].p_cmd = cmd; 1535 1536 QEDI_INFO(&qedi->dbg_ctx, QEDI_LOG_CONN, 1537 "update itt map tid=0x%x, with proto itt=0x%x\n", tid, 1538 qedi->itt_map[tid].itt); 1539 } 1540 1541 void qedi_get_task_tid(struct qedi_ctx *qedi, u32 itt, s16 *tid) 1542 { 1543 u16 i; 1544 1545 for (i = 0; i < MAX_ISCSI_TASK_ENTRIES; i++) { 1546 if (qedi->itt_map[i].itt == itt) { 1547 *tid = i; 1548 QEDI_INFO(&qedi->dbg_ctx, QEDI_LOG_CONN, 1549 "Ref itt=0x%x, found at tid=0x%x\n", 1550 itt, *tid); 1551 return; 1552 } 1553 } 1554 1555 WARN_ON(1); 1556 } 1557 1558 void qedi_get_proto_itt(struct qedi_ctx *qedi, u32 tid, u32 *proto_itt) 1559 { 1560 *proto_itt = qedi->itt_map[tid].itt; 1561 QEDI_INFO(&qedi->dbg_ctx, QEDI_LOG_CONN, 1562 "Get itt map tid [0x%x with proto itt[0x%x]", 1563 tid, *proto_itt); 1564 } 1565 1566 struct qedi_cmd *qedi_get_cmd_from_tid(struct qedi_ctx *qedi, u32 tid) 1567 { 1568 struct qedi_cmd *cmd = NULL; 1569 1570 if (tid >= MAX_ISCSI_TASK_ENTRIES) 1571 return NULL; 1572 1573 cmd = qedi->itt_map[tid].p_cmd; 1574 if (cmd->task_id != tid) 1575 return NULL; 1576 1577 qedi->itt_map[tid].p_cmd = NULL; 1578 1579 return cmd; 1580 } 1581 1582 static int qedi_alloc_itt(struct qedi_ctx *qedi) 1583 { 1584 qedi->itt_map = kcalloc(MAX_ISCSI_TASK_ENTRIES, 1585 sizeof(struct qedi_itt_map), GFP_KERNEL); 1586 if (!qedi->itt_map) { 1587 QEDI_ERR(&qedi->dbg_ctx, 1588 "Unable to allocate itt map array memory\n"); 1589 return -ENOMEM; 1590 } 1591 return 0; 1592 } 1593 1594 static void qedi_free_itt(struct qedi_ctx *qedi) 1595 { 1596 kfree(qedi->itt_map); 1597 } 1598 1599 static struct qed_ll2_cb_ops qedi_ll2_cb_ops = { 1600 .rx_cb = qedi_ll2_rx, 1601 .tx_cb = NULL, 1602 }; 1603 1604 static int qedi_percpu_io_thread(void *arg) 1605 { 1606 struct qedi_percpu_s *p = arg; 1607 struct qedi_work *work, *tmp; 1608 unsigned long flags; 1609 LIST_HEAD(work_list); 1610 1611 set_user_nice(current, -20); 1612 1613 while (!kthread_should_stop()) { 1614 spin_lock_irqsave(&p->p_work_lock, flags); 1615 while (!list_empty(&p->work_list)) { 1616 list_splice_init(&p->work_list, &work_list); 1617 spin_unlock_irqrestore(&p->p_work_lock, flags); 1618 1619 list_for_each_entry_safe(work, tmp, &work_list, list) { 1620 list_del_init(&work->list); 1621 qedi_fp_process_cqes(work); 1622 if (!work->is_solicited) 1623 kfree(work); 1624 } 1625 cond_resched(); 1626 spin_lock_irqsave(&p->p_work_lock, flags); 1627 } 1628 set_current_state(TASK_INTERRUPTIBLE); 1629 spin_unlock_irqrestore(&p->p_work_lock, flags); 1630 schedule(); 1631 } 1632 __set_current_state(TASK_RUNNING); 1633 1634 return 0; 1635 } 1636 1637 static int qedi_cpu_online(unsigned int cpu) 1638 { 1639 struct qedi_percpu_s *p = this_cpu_ptr(&qedi_percpu); 1640 struct task_struct *thread; 1641 1642 thread = kthread_create_on_node(qedi_percpu_io_thread, (void *)p, 1643 cpu_to_node(cpu), 1644 "qedi_thread/%d", cpu); 1645 if (IS_ERR(thread)) 1646 return PTR_ERR(thread); 1647 1648 kthread_bind(thread, cpu); 1649 p->iothread = thread; 1650 wake_up_process(thread); 1651 return 0; 1652 } 1653 1654 static int qedi_cpu_offline(unsigned int cpu) 1655 { 1656 struct qedi_percpu_s *p = this_cpu_ptr(&qedi_percpu); 1657 struct qedi_work *work, *tmp; 1658 struct task_struct *thread; 1659 1660 spin_lock_bh(&p->p_work_lock); 1661 thread = p->iothread; 1662 p->iothread = NULL; 1663 1664 list_for_each_entry_safe(work, tmp, &p->work_list, list) { 1665 list_del_init(&work->list); 1666 qedi_fp_process_cqes(work); 1667 if (!work->is_solicited) 1668 kfree(work); 1669 } 1670 1671 spin_unlock_bh(&p->p_work_lock); 1672 if (thread) 1673 kthread_stop(thread); 1674 return 0; 1675 } 1676 1677 void qedi_reset_host_mtu(struct qedi_ctx *qedi, u16 mtu) 1678 { 1679 struct qed_ll2_params params; 1680 1681 qedi_recover_all_conns(qedi); 1682 1683 qedi_ops->ll2->stop(qedi->cdev); 1684 qedi_ll2_free_skbs(qedi); 1685 1686 QEDI_INFO(&qedi->dbg_ctx, QEDI_LOG_INFO, "old MTU %u, new MTU %u\n", 1687 qedi->ll2_mtu, mtu); 1688 memset(¶ms, 0, sizeof(params)); 1689 qedi->ll2_mtu = mtu; 1690 params.mtu = qedi->ll2_mtu + IPV6_HDR_LEN + TCP_HDR_LEN; 1691 params.drop_ttl0_packets = 0; 1692 params.rx_vlan_stripping = 1; 1693 ether_addr_copy(params.ll2_mac_address, qedi->dev_info.common.hw_mac); 1694 qedi_ops->ll2->start(qedi->cdev, ¶ms); 1695 } 1696 1697 /** 1698 * qedi_get_nvram_block: - Scan through the iSCSI NVRAM block (while accounting 1699 * for gaps) for the matching absolute-pf-id of the QEDI device. 1700 */ 1701 static struct nvm_iscsi_block * 1702 qedi_get_nvram_block(struct qedi_ctx *qedi) 1703 { 1704 int i; 1705 u8 pf; 1706 u32 flags; 1707 struct nvm_iscsi_block *block; 1708 1709 pf = qedi->dev_info.common.abs_pf_id; 1710 block = &qedi->iscsi_cfg->block[0]; 1711 for (i = 0; i < NUM_OF_ISCSI_PF_SUPPORTED; i++, block++) { 1712 flags = ((block->id) & NVM_ISCSI_CFG_BLK_CTRL_FLAG_MASK) >> 1713 NVM_ISCSI_CFG_BLK_CTRL_FLAG_OFFSET; 1714 if (flags & (NVM_ISCSI_CFG_BLK_CTRL_FLAG_IS_NOT_EMPTY | 1715 NVM_ISCSI_CFG_BLK_CTRL_FLAG_PF_MAPPED) && 1716 (pf == (block->id & NVM_ISCSI_CFG_BLK_MAPPED_PF_ID_MASK) 1717 >> NVM_ISCSI_CFG_BLK_MAPPED_PF_ID_OFFSET)) 1718 return block; 1719 } 1720 return NULL; 1721 } 1722 1723 static ssize_t qedi_show_boot_eth_info(void *data, int type, char *buf) 1724 { 1725 struct qedi_ctx *qedi = data; 1726 struct nvm_iscsi_initiator *initiator; 1727 char *str = buf; 1728 int rc = 1; 1729 u32 ipv6_en, dhcp_en, ip_len; 1730 struct nvm_iscsi_block *block; 1731 char *fmt, *ip, *sub, *gw; 1732 1733 block = qedi_get_nvram_block(qedi); 1734 if (!block) 1735 return 0; 1736 1737 initiator = &block->initiator; 1738 ipv6_en = block->generic.ctrl_flags & 1739 NVM_ISCSI_CFG_GEN_IPV6_ENABLED; 1740 dhcp_en = block->generic.ctrl_flags & 1741 NVM_ISCSI_CFG_GEN_DHCP_TCPIP_CONFIG_ENABLED; 1742 /* Static IP assignments. */ 1743 fmt = ipv6_en ? "%pI6\n" : "%pI4\n"; 1744 ip = ipv6_en ? initiator->ipv6.addr.byte : initiator->ipv4.addr.byte; 1745 ip_len = ipv6_en ? IPV6_LEN : IPV4_LEN; 1746 sub = ipv6_en ? initiator->ipv6.subnet_mask.byte : 1747 initiator->ipv4.subnet_mask.byte; 1748 gw = ipv6_en ? initiator->ipv6.gateway.byte : 1749 initiator->ipv4.gateway.byte; 1750 /* DHCP IP adjustments. */ 1751 fmt = dhcp_en ? "%s\n" : fmt; 1752 if (dhcp_en) { 1753 ip = ipv6_en ? "0::0" : "0.0.0.0"; 1754 sub = ip; 1755 gw = ip; 1756 ip_len = ipv6_en ? 5 : 8; 1757 } 1758 1759 switch (type) { 1760 case ISCSI_BOOT_ETH_IP_ADDR: 1761 rc = snprintf(str, ip_len, fmt, ip); 1762 break; 1763 case ISCSI_BOOT_ETH_SUBNET_MASK: 1764 rc = snprintf(str, ip_len, fmt, sub); 1765 break; 1766 case ISCSI_BOOT_ETH_GATEWAY: 1767 rc = snprintf(str, ip_len, fmt, gw); 1768 break; 1769 case ISCSI_BOOT_ETH_FLAGS: 1770 rc = snprintf(str, 3, "%hhd\n", 1771 SYSFS_FLAG_FW_SEL_BOOT); 1772 break; 1773 case ISCSI_BOOT_ETH_INDEX: 1774 rc = snprintf(str, 3, "0\n"); 1775 break; 1776 case ISCSI_BOOT_ETH_MAC: 1777 rc = sysfs_format_mac(str, qedi->mac, ETH_ALEN); 1778 break; 1779 case ISCSI_BOOT_ETH_VLAN: 1780 rc = snprintf(str, 12, "%d\n", 1781 GET_FIELD2(initiator->generic_cont0, 1782 NVM_ISCSI_CFG_INITIATOR_VLAN)); 1783 break; 1784 case ISCSI_BOOT_ETH_ORIGIN: 1785 if (dhcp_en) 1786 rc = snprintf(str, 3, "3\n"); 1787 break; 1788 default: 1789 rc = 0; 1790 break; 1791 } 1792 1793 return rc; 1794 } 1795 1796 static umode_t qedi_eth_get_attr_visibility(void *data, int type) 1797 { 1798 int rc = 1; 1799 1800 switch (type) { 1801 case ISCSI_BOOT_ETH_FLAGS: 1802 case ISCSI_BOOT_ETH_MAC: 1803 case ISCSI_BOOT_ETH_INDEX: 1804 case ISCSI_BOOT_ETH_IP_ADDR: 1805 case ISCSI_BOOT_ETH_SUBNET_MASK: 1806 case ISCSI_BOOT_ETH_GATEWAY: 1807 case ISCSI_BOOT_ETH_ORIGIN: 1808 case ISCSI_BOOT_ETH_VLAN: 1809 rc = 0444; 1810 break; 1811 default: 1812 rc = 0; 1813 break; 1814 } 1815 return rc; 1816 } 1817 1818 static ssize_t qedi_show_boot_ini_info(void *data, int type, char *buf) 1819 { 1820 struct qedi_ctx *qedi = data; 1821 struct nvm_iscsi_initiator *initiator; 1822 char *str = buf; 1823 int rc; 1824 struct nvm_iscsi_block *block; 1825 1826 block = qedi_get_nvram_block(qedi); 1827 if (!block) 1828 return 0; 1829 1830 initiator = &block->initiator; 1831 1832 switch (type) { 1833 case ISCSI_BOOT_INI_INITIATOR_NAME: 1834 rc = snprintf(str, NVM_ISCSI_CFG_ISCSI_NAME_MAX_LEN, "%s\n", 1835 initiator->initiator_name.byte); 1836 break; 1837 default: 1838 rc = 0; 1839 break; 1840 } 1841 return rc; 1842 } 1843 1844 static umode_t qedi_ini_get_attr_visibility(void *data, int type) 1845 { 1846 int rc; 1847 1848 switch (type) { 1849 case ISCSI_BOOT_INI_INITIATOR_NAME: 1850 rc = 0444; 1851 break; 1852 default: 1853 rc = 0; 1854 break; 1855 } 1856 return rc; 1857 } 1858 1859 static ssize_t 1860 qedi_show_boot_tgt_info(struct qedi_ctx *qedi, int type, 1861 char *buf, enum qedi_nvm_tgts idx) 1862 { 1863 char *str = buf; 1864 int rc = 1; 1865 u32 ctrl_flags, ipv6_en, chap_en, mchap_en, ip_len; 1866 struct nvm_iscsi_block *block; 1867 char *chap_name, *chap_secret; 1868 char *mchap_name, *mchap_secret; 1869 1870 block = qedi_get_nvram_block(qedi); 1871 if (!block) 1872 goto exit_show_tgt_info; 1873 1874 QEDI_INFO(&qedi->dbg_ctx, QEDI_LOG_EVT, 1875 "Port:%d, tgt_idx:%d\n", 1876 GET_FIELD2(block->id, NVM_ISCSI_CFG_BLK_MAPPED_PF_ID), idx); 1877 1878 ctrl_flags = block->target[idx].ctrl_flags & 1879 NVM_ISCSI_CFG_TARGET_ENABLED; 1880 1881 if (!ctrl_flags) { 1882 QEDI_INFO(&qedi->dbg_ctx, QEDI_LOG_EVT, 1883 "Target disabled\n"); 1884 goto exit_show_tgt_info; 1885 } 1886 1887 ipv6_en = block->generic.ctrl_flags & 1888 NVM_ISCSI_CFG_GEN_IPV6_ENABLED; 1889 ip_len = ipv6_en ? IPV6_LEN : IPV4_LEN; 1890 chap_en = block->generic.ctrl_flags & 1891 NVM_ISCSI_CFG_GEN_CHAP_ENABLED; 1892 chap_name = chap_en ? block->initiator.chap_name.byte : NULL; 1893 chap_secret = chap_en ? block->initiator.chap_password.byte : NULL; 1894 1895 mchap_en = block->generic.ctrl_flags & 1896 NVM_ISCSI_CFG_GEN_CHAP_MUTUAL_ENABLED; 1897 mchap_name = mchap_en ? block->target[idx].chap_name.byte : NULL; 1898 mchap_secret = mchap_en ? block->target[idx].chap_password.byte : NULL; 1899 1900 switch (type) { 1901 case ISCSI_BOOT_TGT_NAME: 1902 rc = snprintf(str, NVM_ISCSI_CFG_ISCSI_NAME_MAX_LEN, "%s\n", 1903 block->target[idx].target_name.byte); 1904 break; 1905 case ISCSI_BOOT_TGT_IP_ADDR: 1906 if (ipv6_en) 1907 rc = snprintf(str, ip_len, "%pI6\n", 1908 block->target[idx].ipv6_addr.byte); 1909 else 1910 rc = snprintf(str, ip_len, "%pI4\n", 1911 block->target[idx].ipv4_addr.byte); 1912 break; 1913 case ISCSI_BOOT_TGT_PORT: 1914 rc = snprintf(str, 12, "%d\n", 1915 GET_FIELD2(block->target[idx].generic_cont0, 1916 NVM_ISCSI_CFG_TARGET_TCP_PORT)); 1917 break; 1918 case ISCSI_BOOT_TGT_LUN: 1919 rc = snprintf(str, 22, "%.*d\n", 1920 block->target[idx].lun.value[1], 1921 block->target[idx].lun.value[0]); 1922 break; 1923 case ISCSI_BOOT_TGT_CHAP_NAME: 1924 rc = snprintf(str, NVM_ISCSI_CFG_CHAP_NAME_MAX_LEN, "%s\n", 1925 chap_name); 1926 break; 1927 case ISCSI_BOOT_TGT_CHAP_SECRET: 1928 rc = snprintf(str, NVM_ISCSI_CFG_CHAP_PWD_MAX_LEN, "%s\n", 1929 chap_secret); 1930 break; 1931 case ISCSI_BOOT_TGT_REV_CHAP_NAME: 1932 rc = snprintf(str, NVM_ISCSI_CFG_CHAP_NAME_MAX_LEN, "%s\n", 1933 mchap_name); 1934 break; 1935 case ISCSI_BOOT_TGT_REV_CHAP_SECRET: 1936 rc = snprintf(str, NVM_ISCSI_CFG_CHAP_PWD_MAX_LEN, "%s\n", 1937 mchap_secret); 1938 break; 1939 case ISCSI_BOOT_TGT_FLAGS: 1940 rc = snprintf(str, 3, "%hhd\n", SYSFS_FLAG_FW_SEL_BOOT); 1941 break; 1942 case ISCSI_BOOT_TGT_NIC_ASSOC: 1943 rc = snprintf(str, 3, "0\n"); 1944 break; 1945 default: 1946 rc = 0; 1947 break; 1948 } 1949 1950 exit_show_tgt_info: 1951 return rc; 1952 } 1953 1954 static ssize_t qedi_show_boot_tgt_pri_info(void *data, int type, char *buf) 1955 { 1956 struct qedi_ctx *qedi = data; 1957 1958 return qedi_show_boot_tgt_info(qedi, type, buf, QEDI_NVM_TGT_PRI); 1959 } 1960 1961 static ssize_t qedi_show_boot_tgt_sec_info(void *data, int type, char *buf) 1962 { 1963 struct qedi_ctx *qedi = data; 1964 1965 return qedi_show_boot_tgt_info(qedi, type, buf, QEDI_NVM_TGT_SEC); 1966 } 1967 1968 static umode_t qedi_tgt_get_attr_visibility(void *data, int type) 1969 { 1970 int rc; 1971 1972 switch (type) { 1973 case ISCSI_BOOT_TGT_NAME: 1974 case ISCSI_BOOT_TGT_IP_ADDR: 1975 case ISCSI_BOOT_TGT_PORT: 1976 case ISCSI_BOOT_TGT_LUN: 1977 case ISCSI_BOOT_TGT_CHAP_NAME: 1978 case ISCSI_BOOT_TGT_CHAP_SECRET: 1979 case ISCSI_BOOT_TGT_REV_CHAP_NAME: 1980 case ISCSI_BOOT_TGT_REV_CHAP_SECRET: 1981 case ISCSI_BOOT_TGT_NIC_ASSOC: 1982 case ISCSI_BOOT_TGT_FLAGS: 1983 rc = 0444; 1984 break; 1985 default: 1986 rc = 0; 1987 break; 1988 } 1989 return rc; 1990 } 1991 1992 static void qedi_boot_release(void *data) 1993 { 1994 struct qedi_ctx *qedi = data; 1995 1996 scsi_host_put(qedi->shost); 1997 } 1998 1999 static int qedi_get_boot_info(struct qedi_ctx *qedi) 2000 { 2001 int ret = 1; 2002 u16 len; 2003 2004 len = sizeof(struct nvm_iscsi_cfg); 2005 2006 QEDI_INFO(&qedi->dbg_ctx, QEDI_LOG_INFO, 2007 "Get NVM iSCSI CFG image\n"); 2008 ret = qedi_ops->common->nvm_get_image(qedi->cdev, 2009 QED_NVM_IMAGE_ISCSI_CFG, 2010 (char *)qedi->iscsi_cfg, len); 2011 if (ret) 2012 QEDI_ERR(&qedi->dbg_ctx, 2013 "Could not get NVM image. ret = %d\n", ret); 2014 2015 return ret; 2016 } 2017 2018 static int qedi_setup_boot_info(struct qedi_ctx *qedi) 2019 { 2020 struct iscsi_boot_kobj *boot_kobj; 2021 2022 if (qedi_get_boot_info(qedi)) 2023 return -EPERM; 2024 2025 qedi->boot_kset = iscsi_boot_create_host_kset(qedi->shost->host_no); 2026 if (!qedi->boot_kset) 2027 goto kset_free; 2028 2029 if (!scsi_host_get(qedi->shost)) 2030 goto kset_free; 2031 2032 boot_kobj = iscsi_boot_create_target(qedi->boot_kset, 0, qedi, 2033 qedi_show_boot_tgt_pri_info, 2034 qedi_tgt_get_attr_visibility, 2035 qedi_boot_release); 2036 if (!boot_kobj) 2037 goto put_host; 2038 2039 if (!scsi_host_get(qedi->shost)) 2040 goto kset_free; 2041 2042 boot_kobj = iscsi_boot_create_target(qedi->boot_kset, 1, qedi, 2043 qedi_show_boot_tgt_sec_info, 2044 qedi_tgt_get_attr_visibility, 2045 qedi_boot_release); 2046 if (!boot_kobj) 2047 goto put_host; 2048 2049 if (!scsi_host_get(qedi->shost)) 2050 goto kset_free; 2051 2052 boot_kobj = iscsi_boot_create_initiator(qedi->boot_kset, 0, qedi, 2053 qedi_show_boot_ini_info, 2054 qedi_ini_get_attr_visibility, 2055 qedi_boot_release); 2056 if (!boot_kobj) 2057 goto put_host; 2058 2059 if (!scsi_host_get(qedi->shost)) 2060 goto kset_free; 2061 2062 boot_kobj = iscsi_boot_create_ethernet(qedi->boot_kset, 0, qedi, 2063 qedi_show_boot_eth_info, 2064 qedi_eth_get_attr_visibility, 2065 qedi_boot_release); 2066 if (!boot_kobj) 2067 goto put_host; 2068 2069 return 0; 2070 2071 put_host: 2072 scsi_host_put(qedi->shost); 2073 kset_free: 2074 iscsi_boot_destroy_kset(qedi->boot_kset); 2075 return -ENOMEM; 2076 } 2077 2078 static void __qedi_remove(struct pci_dev *pdev, int mode) 2079 { 2080 struct qedi_ctx *qedi = pci_get_drvdata(pdev); 2081 2082 if (qedi->tmf_thread) { 2083 flush_workqueue(qedi->tmf_thread); 2084 destroy_workqueue(qedi->tmf_thread); 2085 qedi->tmf_thread = NULL; 2086 } 2087 2088 if (qedi->offload_thread) { 2089 flush_workqueue(qedi->offload_thread); 2090 destroy_workqueue(qedi->offload_thread); 2091 qedi->offload_thread = NULL; 2092 } 2093 2094 #ifdef CONFIG_DEBUG_FS 2095 qedi_dbg_host_exit(&qedi->dbg_ctx); 2096 #endif 2097 if (!test_bit(QEDI_IN_OFFLINE, &qedi->flags)) 2098 qedi_ops->common->set_power_state(qedi->cdev, PCI_D0); 2099 2100 qedi_sync_free_irqs(qedi); 2101 2102 if (!test_bit(QEDI_IN_OFFLINE, &qedi->flags)) { 2103 qedi_ops->stop(qedi->cdev); 2104 qedi_ops->ll2->stop(qedi->cdev); 2105 } 2106 2107 if (mode == QEDI_MODE_NORMAL) 2108 qedi_free_iscsi_pf_param(qedi); 2109 2110 if (!test_bit(QEDI_IN_OFFLINE, &qedi->flags)) { 2111 qedi_ops->common->slowpath_stop(qedi->cdev); 2112 qedi_ops->common->remove(qedi->cdev); 2113 } 2114 2115 qedi_destroy_fp(qedi); 2116 2117 if (mode == QEDI_MODE_NORMAL) { 2118 qedi_release_cid_que(qedi); 2119 qedi_cm_free_mem(qedi); 2120 qedi_free_uio(qedi->udev); 2121 qedi_free_itt(qedi); 2122 2123 iscsi_host_remove(qedi->shost); 2124 iscsi_host_free(qedi->shost); 2125 2126 if (qedi->ll2_recv_thread) { 2127 kthread_stop(qedi->ll2_recv_thread); 2128 qedi->ll2_recv_thread = NULL; 2129 } 2130 qedi_ll2_free_skbs(qedi); 2131 2132 if (qedi->boot_kset) 2133 iscsi_boot_destroy_kset(qedi->boot_kset); 2134 } 2135 } 2136 2137 static int __qedi_probe(struct pci_dev *pdev, int mode) 2138 { 2139 struct qedi_ctx *qedi; 2140 struct qed_ll2_params params; 2141 u32 dp_module = 0; 2142 u8 dp_level = 0; 2143 bool is_vf = false; 2144 char host_buf[16]; 2145 struct qed_link_params link_params; 2146 struct qed_slowpath_params sp_params; 2147 struct qed_probe_params qed_params; 2148 void *task_start, *task_end; 2149 int rc; 2150 u16 tmp; 2151 2152 if (mode != QEDI_MODE_RECOVERY) { 2153 qedi = qedi_host_alloc(pdev); 2154 if (!qedi) { 2155 rc = -ENOMEM; 2156 goto exit_probe; 2157 } 2158 } else { 2159 qedi = pci_get_drvdata(pdev); 2160 } 2161 2162 memset(&qed_params, 0, sizeof(qed_params)); 2163 qed_params.protocol = QED_PROTOCOL_ISCSI; 2164 qed_params.dp_module = dp_module; 2165 qed_params.dp_level = dp_level; 2166 qed_params.is_vf = is_vf; 2167 qedi->cdev = qedi_ops->common->probe(pdev, &qed_params); 2168 if (!qedi->cdev) { 2169 rc = -ENODEV; 2170 QEDI_ERR(&qedi->dbg_ctx, "Cannot initialize hardware\n"); 2171 goto free_host; 2172 } 2173 2174 atomic_set(&qedi->link_state, QEDI_LINK_DOWN); 2175 2176 rc = qedi_ops->fill_dev_info(qedi->cdev, &qedi->dev_info); 2177 if (rc) 2178 goto free_host; 2179 2180 if (mode != QEDI_MODE_RECOVERY) { 2181 rc = qedi_set_iscsi_pf_param(qedi); 2182 if (rc) { 2183 rc = -ENOMEM; 2184 QEDI_ERR(&qedi->dbg_ctx, 2185 "Set iSCSI pf param fail\n"); 2186 goto free_host; 2187 } 2188 } 2189 2190 qedi_ops->common->update_pf_params(qedi->cdev, &qedi->pf_params); 2191 2192 rc = qedi_prepare_fp(qedi); 2193 if (rc) { 2194 QEDI_ERR(&qedi->dbg_ctx, "Cannot start slowpath.\n"); 2195 goto free_pf_params; 2196 } 2197 2198 /* Start the Slowpath-process */ 2199 memset(&sp_params, 0, sizeof(struct qed_slowpath_params)); 2200 sp_params.int_mode = QED_INT_MODE_MSIX; 2201 sp_params.drv_major = QEDI_DRIVER_MAJOR_VER; 2202 sp_params.drv_minor = QEDI_DRIVER_MINOR_VER; 2203 sp_params.drv_rev = QEDI_DRIVER_REV_VER; 2204 sp_params.drv_eng = QEDI_DRIVER_ENG_VER; 2205 strlcpy(sp_params.name, "qedi iSCSI", QED_DRV_VER_STR_SIZE); 2206 rc = qedi_ops->common->slowpath_start(qedi->cdev, &sp_params); 2207 if (rc) { 2208 QEDI_ERR(&qedi->dbg_ctx, "Cannot start slowpath\n"); 2209 goto stop_hw; 2210 } 2211 2212 /* update_pf_params needs to be called before and after slowpath 2213 * start 2214 */ 2215 qedi_ops->common->update_pf_params(qedi->cdev, &qedi->pf_params); 2216 2217 rc = qedi_setup_int(qedi); 2218 if (rc) 2219 goto stop_iscsi_func; 2220 2221 qedi_ops->common->set_power_state(qedi->cdev, PCI_D0); 2222 2223 /* Learn information crucial for qedi to progress */ 2224 rc = qedi_ops->fill_dev_info(qedi->cdev, &qedi->dev_info); 2225 if (rc) 2226 goto stop_iscsi_func; 2227 2228 /* Record BDQ producer doorbell addresses */ 2229 qedi->bdq_primary_prod = qedi->dev_info.primary_dbq_rq_addr; 2230 qedi->bdq_secondary_prod = qedi->dev_info.secondary_bdq_rq_addr; 2231 QEDI_INFO(&qedi->dbg_ctx, QEDI_LOG_DISC, 2232 "BDQ primary_prod=%p secondary_prod=%p.\n", 2233 qedi->bdq_primary_prod, 2234 qedi->bdq_secondary_prod); 2235 2236 /* 2237 * We need to write the number of BDs in the BDQ we've preallocated so 2238 * the f/w will do a prefetch and we'll get an unsolicited CQE when a 2239 * packet arrives. 2240 */ 2241 qedi->bdq_prod_idx = QEDI_BDQ_NUM; 2242 QEDI_INFO(&qedi->dbg_ctx, QEDI_LOG_DISC, 2243 "Writing %d to primary and secondary BDQ doorbell registers.\n", 2244 qedi->bdq_prod_idx); 2245 writew(qedi->bdq_prod_idx, qedi->bdq_primary_prod); 2246 tmp = readw(qedi->bdq_primary_prod); 2247 writew(qedi->bdq_prod_idx, qedi->bdq_secondary_prod); 2248 tmp = readw(qedi->bdq_secondary_prod); 2249 2250 ether_addr_copy(qedi->mac, qedi->dev_info.common.hw_mac); 2251 QEDI_INFO(&qedi->dbg_ctx, QEDI_LOG_DISC, "MAC address is %pM.\n", 2252 qedi->mac); 2253 2254 sprintf(host_buf, "host_%d", qedi->shost->host_no); 2255 qedi_ops->common->set_name(qedi->cdev, host_buf); 2256 2257 qedi_ops->register_ops(qedi->cdev, &qedi_cb_ops, qedi); 2258 2259 memset(¶ms, 0, sizeof(params)); 2260 params.mtu = DEF_PATH_MTU + IPV6_HDR_LEN + TCP_HDR_LEN; 2261 qedi->ll2_mtu = DEF_PATH_MTU; 2262 params.drop_ttl0_packets = 0; 2263 params.rx_vlan_stripping = 1; 2264 ether_addr_copy(params.ll2_mac_address, qedi->dev_info.common.hw_mac); 2265 2266 if (mode != QEDI_MODE_RECOVERY) { 2267 /* set up rx path */ 2268 INIT_LIST_HEAD(&qedi->ll2_skb_list); 2269 spin_lock_init(&qedi->ll2_lock); 2270 /* start qedi context */ 2271 spin_lock_init(&qedi->hba_lock); 2272 spin_lock_init(&qedi->task_idx_lock); 2273 } 2274 qedi_ops->ll2->register_cb_ops(qedi->cdev, &qedi_ll2_cb_ops, qedi); 2275 qedi_ops->ll2->start(qedi->cdev, ¶ms); 2276 2277 if (mode != QEDI_MODE_RECOVERY) { 2278 qedi->ll2_recv_thread = kthread_run(qedi_ll2_recv_thread, 2279 (void *)qedi, 2280 "qedi_ll2_thread"); 2281 } 2282 2283 rc = qedi_ops->start(qedi->cdev, &qedi->tasks, 2284 qedi, qedi_iscsi_event_cb); 2285 if (rc) { 2286 rc = -ENODEV; 2287 QEDI_ERR(&qedi->dbg_ctx, "Cannot start iSCSI function\n"); 2288 goto stop_slowpath; 2289 } 2290 2291 task_start = qedi_get_task_mem(&qedi->tasks, 0); 2292 task_end = qedi_get_task_mem(&qedi->tasks, MAX_TID_BLOCKS_ISCSI - 1); 2293 QEDI_INFO(&qedi->dbg_ctx, QEDI_LOG_DISC, 2294 "Task context start=%p, end=%p block_size=%u.\n", 2295 task_start, task_end, qedi->tasks.size); 2296 2297 memset(&link_params, 0, sizeof(link_params)); 2298 link_params.link_up = true; 2299 rc = qedi_ops->common->set_link(qedi->cdev, &link_params); 2300 if (rc) { 2301 QEDI_WARN(&qedi->dbg_ctx, "Link set up failed.\n"); 2302 atomic_set(&qedi->link_state, QEDI_LINK_DOWN); 2303 } 2304 2305 #ifdef CONFIG_DEBUG_FS 2306 qedi_dbg_host_init(&qedi->dbg_ctx, &qedi_debugfs_ops, 2307 &qedi_dbg_fops); 2308 #endif 2309 QEDI_INFO(&qedi->dbg_ctx, QEDI_LOG_INFO, 2310 "QLogic FastLinQ iSCSI Module qedi %s, FW %d.%d.%d.%d\n", 2311 QEDI_MODULE_VERSION, FW_MAJOR_VERSION, FW_MINOR_VERSION, 2312 FW_REVISION_VERSION, FW_ENGINEERING_VERSION); 2313 2314 if (mode == QEDI_MODE_NORMAL) { 2315 if (iscsi_host_add(qedi->shost, &pdev->dev)) { 2316 QEDI_ERR(&qedi->dbg_ctx, 2317 "Could not add iscsi host\n"); 2318 rc = -ENOMEM; 2319 goto remove_host; 2320 } 2321 2322 /* Allocate uio buffers */ 2323 rc = qedi_alloc_uio_rings(qedi); 2324 if (rc) { 2325 QEDI_ERR(&qedi->dbg_ctx, 2326 "UIO alloc ring failed err=%d\n", rc); 2327 goto remove_host; 2328 } 2329 2330 rc = qedi_init_uio(qedi); 2331 if (rc) { 2332 QEDI_ERR(&qedi->dbg_ctx, 2333 "UIO init failed, err=%d\n", rc); 2334 goto free_uio; 2335 } 2336 2337 /* host the array on iscsi_conn */ 2338 rc = qedi_setup_cid_que(qedi); 2339 if (rc) { 2340 QEDI_ERR(&qedi->dbg_ctx, 2341 "Could not setup cid que\n"); 2342 goto free_uio; 2343 } 2344 2345 rc = qedi_cm_alloc_mem(qedi); 2346 if (rc) { 2347 QEDI_ERR(&qedi->dbg_ctx, 2348 "Could not alloc cm memory\n"); 2349 goto free_cid_que; 2350 } 2351 2352 rc = qedi_alloc_itt(qedi); 2353 if (rc) { 2354 QEDI_ERR(&qedi->dbg_ctx, 2355 "Could not alloc itt memory\n"); 2356 goto free_cid_que; 2357 } 2358 2359 sprintf(host_buf, "host_%d", qedi->shost->host_no); 2360 qedi->tmf_thread = create_singlethread_workqueue(host_buf); 2361 if (!qedi->tmf_thread) { 2362 QEDI_ERR(&qedi->dbg_ctx, 2363 "Unable to start tmf thread!\n"); 2364 rc = -ENODEV; 2365 goto free_cid_que; 2366 } 2367 2368 sprintf(host_buf, "qedi_ofld%d", qedi->shost->host_no); 2369 qedi->offload_thread = create_workqueue(host_buf); 2370 if (!qedi->offload_thread) { 2371 QEDI_ERR(&qedi->dbg_ctx, 2372 "Unable to start offload thread!\n"); 2373 rc = -ENODEV; 2374 goto free_cid_que; 2375 } 2376 2377 /* F/w needs 1st task context memory entry for performance */ 2378 set_bit(QEDI_RESERVE_TASK_ID, qedi->task_idx_map); 2379 atomic_set(&qedi->num_offloads, 0); 2380 2381 if (qedi_setup_boot_info(qedi)) 2382 QEDI_ERR(&qedi->dbg_ctx, 2383 "No iSCSI boot target configured\n"); 2384 } 2385 2386 return 0; 2387 2388 free_cid_que: 2389 qedi_release_cid_que(qedi); 2390 free_uio: 2391 qedi_free_uio(qedi->udev); 2392 remove_host: 2393 #ifdef CONFIG_DEBUG_FS 2394 qedi_dbg_host_exit(&qedi->dbg_ctx); 2395 #endif 2396 iscsi_host_remove(qedi->shost); 2397 stop_iscsi_func: 2398 qedi_ops->stop(qedi->cdev); 2399 stop_slowpath: 2400 qedi_ops->common->slowpath_stop(qedi->cdev); 2401 stop_hw: 2402 qedi_ops->common->remove(qedi->cdev); 2403 free_pf_params: 2404 qedi_free_iscsi_pf_param(qedi); 2405 free_host: 2406 iscsi_host_free(qedi->shost); 2407 exit_probe: 2408 return rc; 2409 } 2410 2411 static int qedi_probe(struct pci_dev *pdev, const struct pci_device_id *id) 2412 { 2413 return __qedi_probe(pdev, QEDI_MODE_NORMAL); 2414 } 2415 2416 static void qedi_remove(struct pci_dev *pdev) 2417 { 2418 __qedi_remove(pdev, QEDI_MODE_NORMAL); 2419 } 2420 2421 static struct pci_device_id qedi_pci_tbl[] = { 2422 { PCI_DEVICE(PCI_VENDOR_ID_QLOGIC, 0x165E) }, 2423 { PCI_DEVICE(PCI_VENDOR_ID_QLOGIC, 0x8084) }, 2424 { 0 }, 2425 }; 2426 MODULE_DEVICE_TABLE(pci, qedi_pci_tbl); 2427 2428 static enum cpuhp_state qedi_cpuhp_state; 2429 2430 static struct pci_driver qedi_pci_driver = { 2431 .name = QEDI_MODULE_NAME, 2432 .id_table = qedi_pci_tbl, 2433 .probe = qedi_probe, 2434 .remove = qedi_remove, 2435 }; 2436 2437 static int __init qedi_init(void) 2438 { 2439 struct qedi_percpu_s *p; 2440 int cpu, rc = 0; 2441 2442 qedi_ops = qed_get_iscsi_ops(); 2443 if (!qedi_ops) { 2444 QEDI_ERR(NULL, "Failed to get qed iSCSI operations\n"); 2445 return -EINVAL; 2446 } 2447 2448 #ifdef CONFIG_DEBUG_FS 2449 qedi_dbg_init("qedi"); 2450 #endif 2451 2452 qedi_scsi_transport = iscsi_register_transport(&qedi_iscsi_transport); 2453 if (!qedi_scsi_transport) { 2454 QEDI_ERR(NULL, "Could not register qedi transport"); 2455 rc = -ENOMEM; 2456 goto exit_qedi_init_1; 2457 } 2458 2459 for_each_possible_cpu(cpu) { 2460 p = &per_cpu(qedi_percpu, cpu); 2461 INIT_LIST_HEAD(&p->work_list); 2462 spin_lock_init(&p->p_work_lock); 2463 p->iothread = NULL; 2464 } 2465 2466 rc = cpuhp_setup_state(CPUHP_AP_ONLINE_DYN, "scsi/qedi:online", 2467 qedi_cpu_online, qedi_cpu_offline); 2468 if (rc < 0) 2469 goto exit_qedi_init_2; 2470 qedi_cpuhp_state = rc; 2471 2472 rc = pci_register_driver(&qedi_pci_driver); 2473 if (rc) { 2474 QEDI_ERR(NULL, "Failed to register driver\n"); 2475 goto exit_qedi_hp; 2476 } 2477 2478 return 0; 2479 2480 exit_qedi_hp: 2481 cpuhp_remove_state(qedi_cpuhp_state); 2482 exit_qedi_init_2: 2483 iscsi_unregister_transport(&qedi_iscsi_transport); 2484 exit_qedi_init_1: 2485 #ifdef CONFIG_DEBUG_FS 2486 qedi_dbg_exit(); 2487 #endif 2488 qed_put_iscsi_ops(); 2489 return rc; 2490 } 2491 2492 static void __exit qedi_cleanup(void) 2493 { 2494 pci_unregister_driver(&qedi_pci_driver); 2495 cpuhp_remove_state(qedi_cpuhp_state); 2496 iscsi_unregister_transport(&qedi_iscsi_transport); 2497 2498 #ifdef CONFIG_DEBUG_FS 2499 qedi_dbg_exit(); 2500 #endif 2501 qed_put_iscsi_ops(); 2502 } 2503 2504 MODULE_DESCRIPTION("QLogic FastLinQ 4xxxx iSCSI Module"); 2505 MODULE_LICENSE("GPL"); 2506 MODULE_AUTHOR("QLogic Corporation"); 2507 MODULE_VERSION(QEDI_MODULE_VERSION); 2508 module_init(qedi_init); 2509 module_exit(qedi_cleanup); 2510