1// SPDX-License-Identifier: GPL-2.0-only 2/* 3 * QLogic iSCSI Offload Driver 4 * Copyright (c) 2016 Cavium Inc. 5 */ 6 7#include <linux/module.h> 8#include <linux/pci.h> 9#include <linux/kernel.h> 10#include <linux/if_arp.h> 11#include <scsi/iscsi_if.h> 12#include <linux/inet.h> 13#include <net/arp.h> 14#include <linux/list.h> 15#include <linux/kthread.h> 16#include <linux/mm.h> 17#include <linux/if_vlan.h> 18#include <linux/cpu.h> 19#include <linux/iscsi_boot_sysfs.h> 20 21#include <scsi/scsi_cmnd.h> 22#include <scsi/scsi_device.h> 23#include <scsi/scsi_eh.h> 24#include <scsi/scsi_host.h> 25#include <scsi/scsi.h> 26 27#include "qedi.h" 28#include "qedi_gbl.h" 29#include "qedi_iscsi.h" 30 31static uint qedi_qed_debug; 32module_param(qedi_qed_debug, uint, 0644); 33MODULE_PARM_DESC(qedi_qed_debug, " QED debug level 0 (default)"); 34 35static uint qedi_fw_debug; 36module_param(qedi_fw_debug, uint, 0644); 37MODULE_PARM_DESC(qedi_fw_debug, " Firmware debug level 0(default) to 3"); 38 39uint qedi_dbg_log = QEDI_LOG_WARN | QEDI_LOG_SCSI_TM; 40module_param(qedi_dbg_log, uint, 0644); 41MODULE_PARM_DESC(qedi_dbg_log, " Default debug level"); 42 43uint qedi_io_tracing; 44module_param(qedi_io_tracing, uint, 0644); 45MODULE_PARM_DESC(qedi_io_tracing, 46 " Enable logging of SCSI requests/completions into trace buffer. (default off)."); 47 48static uint qedi_ll2_buf_size = 0x400; 49module_param(qedi_ll2_buf_size, uint, 0644); 50MODULE_PARM_DESC(qedi_ll2_buf_size, 51 "parameter to set ping packet size, default - 0x400, Jumbo packets - 0x2400."); 52 53static uint qedi_flags_override; 54module_param(qedi_flags_override, uint, 0644); 55MODULE_PARM_DESC(qedi_flags_override, "Disable/Enable MFW error flags bits action."); 56 57const struct qed_iscsi_ops *qedi_ops; 58static struct scsi_transport_template *qedi_scsi_transport; 59static struct pci_driver qedi_pci_driver; 60static DEFINE_PER_CPU(struct qedi_percpu_s, qedi_percpu); 61static LIST_HEAD(qedi_udev_list); 62/* Static function declaration */ 63static int qedi_alloc_global_queues(struct qedi_ctx *qedi); 64static void qedi_free_global_queues(struct qedi_ctx *qedi); 65static struct qedi_cmd *qedi_get_cmd_from_tid(struct qedi_ctx *qedi, u32 tid); 66static void qedi_reset_uio_rings(struct qedi_uio_dev *udev); 67static void qedi_ll2_free_skbs(struct qedi_ctx *qedi); 68static struct nvm_iscsi_block *qedi_get_nvram_block(struct qedi_ctx *qedi); 69static void qedi_recovery_handler(struct work_struct *work); 70static void qedi_schedule_hw_err_handler(void *dev, 71 enum qed_hw_err_type err_type); 72static int qedi_suspend(struct pci_dev *pdev, pm_message_t state); 73 74static int qedi_iscsi_event_cb(void *context, u8 fw_event_code, void *fw_handle) 75{ 76 struct qedi_ctx *qedi; 77 struct qedi_endpoint *qedi_ep; 78 struct iscsi_eqe_data *data; 79 int rval = 0; 80 81 if (!context || !fw_handle) { 82 QEDI_ERR(NULL, "Recv event with ctx NULL\n"); 83 return -EINVAL; 84 } 85 86 qedi = (struct qedi_ctx *)context; 87 QEDI_INFO(&qedi->dbg_ctx, QEDI_LOG_INFO, 88 "Recv Event %d fw_handle %p\n", fw_event_code, fw_handle); 89 90 data = (struct iscsi_eqe_data *)fw_handle; 91 QEDI_INFO(&qedi->dbg_ctx, QEDI_LOG_INFO, 92 "icid=0x%x conn_id=0x%x err-code=0x%x error-pdu-opcode-reserved=0x%x\n", 93 data->icid, data->conn_id, data->error_code, 94 data->error_pdu_opcode_reserved); 95 96 qedi_ep = qedi->ep_tbl[data->icid]; 97 98 if (!qedi_ep) { 99 QEDI_WARN(&qedi->dbg_ctx, 100 "Cannot process event, ep already disconnected, cid=0x%x\n", 101 data->icid); 102 WARN_ON(1); 103 return -ENODEV; 104 } 105 106 switch (fw_event_code) { 107 case ISCSI_EVENT_TYPE_ASYN_CONNECT_COMPLETE: 108 if (qedi_ep->state == EP_STATE_OFLDCONN_START) 109 qedi_ep->state = EP_STATE_OFLDCONN_COMPL; 110 111 wake_up_interruptible(&qedi_ep->tcp_ofld_wait); 112 break; 113 case ISCSI_EVENT_TYPE_ASYN_TERMINATE_DONE: 114 qedi_ep->state = EP_STATE_DISCONN_COMPL; 115 wake_up_interruptible(&qedi_ep->tcp_ofld_wait); 116 break; 117 case ISCSI_EVENT_TYPE_ISCSI_CONN_ERROR: 118 qedi_process_iscsi_error(qedi_ep, data); 119 break; 120 case ISCSI_EVENT_TYPE_ASYN_ABORT_RCVD: 121 case ISCSI_EVENT_TYPE_ASYN_SYN_RCVD: 122 case ISCSI_EVENT_TYPE_ASYN_MAX_RT_TIME: 123 case ISCSI_EVENT_TYPE_ASYN_MAX_RT_CNT: 124 case ISCSI_EVENT_TYPE_ASYN_MAX_KA_PROBES_CNT: 125 case ISCSI_EVENT_TYPE_ASYN_FIN_WAIT2: 126 case ISCSI_EVENT_TYPE_TCP_CONN_ERROR: 127 qedi_process_tcp_error(qedi_ep, data); 128 break; 129 default: 130 QEDI_ERR(&qedi->dbg_ctx, "Recv Unknown Event %u\n", 131 fw_event_code); 132 } 133 134 return rval; 135} 136 137static int qedi_uio_open(struct uio_info *uinfo, struct inode *inode) 138{ 139 struct qedi_uio_dev *udev = uinfo->priv; 140 struct qedi_ctx *qedi = udev->qedi; 141 142 if (!capable(CAP_NET_ADMIN)) 143 return -EPERM; 144 145 if (udev->uio_dev != -1) 146 return -EBUSY; 147 148 rtnl_lock(); 149 udev->uio_dev = iminor(inode); 150 qedi_reset_uio_rings(udev); 151 set_bit(UIO_DEV_OPENED, &qedi->flags); 152 rtnl_unlock(); 153 154 return 0; 155} 156 157static int qedi_uio_close(struct uio_info *uinfo, struct inode *inode) 158{ 159 struct qedi_uio_dev *udev = uinfo->priv; 160 struct qedi_ctx *qedi = udev->qedi; 161 162 udev->uio_dev = -1; 163 clear_bit(UIO_DEV_OPENED, &qedi->flags); 164 qedi_ll2_free_skbs(qedi); 165 return 0; 166} 167 168static void __qedi_free_uio_rings(struct qedi_uio_dev *udev) 169{ 170 if (udev->uctrl) { 171 free_page((unsigned long)udev->uctrl); 172 udev->uctrl = NULL; 173 } 174 175 if (udev->ll2_ring) { 176 free_page((unsigned long)udev->ll2_ring); 177 udev->ll2_ring = NULL; 178 } 179 180 if (udev->ll2_buf) { 181 free_pages((unsigned long)udev->ll2_buf, 2); 182 udev->ll2_buf = NULL; 183 } 184} 185 186static void __qedi_free_uio(struct qedi_uio_dev *udev) 187{ 188 uio_unregister_device(&udev->qedi_uinfo); 189 190 __qedi_free_uio_rings(udev); 191 192 pci_dev_put(udev->pdev); 193 kfree(udev); 194} 195 196static void qedi_free_uio(struct qedi_uio_dev *udev) 197{ 198 if (!udev) 199 return; 200 201 list_del_init(&udev->list); 202 __qedi_free_uio(udev); 203} 204 205static void qedi_reset_uio_rings(struct qedi_uio_dev *udev) 206{ 207 struct qedi_ctx *qedi = NULL; 208 struct qedi_uio_ctrl *uctrl = NULL; 209 210 qedi = udev->qedi; 211 uctrl = udev->uctrl; 212 213 spin_lock_bh(&qedi->ll2_lock); 214 uctrl->host_rx_cons = 0; 215 uctrl->hw_rx_prod = 0; 216 uctrl->hw_rx_bd_prod = 0; 217 uctrl->host_rx_bd_cons = 0; 218 219 memset(udev->ll2_ring, 0, udev->ll2_ring_size); 220 memset(udev->ll2_buf, 0, udev->ll2_buf_size); 221 spin_unlock_bh(&qedi->ll2_lock); 222} 223 224static int __qedi_alloc_uio_rings(struct qedi_uio_dev *udev) 225{ 226 int rc = 0; 227 228 if (udev->ll2_ring || udev->ll2_buf) 229 return rc; 230 231 /* Memory for control area. */ 232 udev->uctrl = (void *)get_zeroed_page(GFP_KERNEL); 233 if (!udev->uctrl) 234 return -ENOMEM; 235 236 /* Allocating memory for LL2 ring */ 237 udev->ll2_ring_size = QEDI_PAGE_SIZE; 238 udev->ll2_ring = (void *)get_zeroed_page(GFP_KERNEL | __GFP_COMP); 239 if (!udev->ll2_ring) { 240 rc = -ENOMEM; 241 goto exit_alloc_ring; 242 } 243 244 /* Allocating memory for Tx/Rx pkt buffer */ 245 udev->ll2_buf_size = TX_RX_RING * qedi_ll2_buf_size; 246 udev->ll2_buf_size = QEDI_PAGE_ALIGN(udev->ll2_buf_size); 247 udev->ll2_buf = (void *)__get_free_pages(GFP_KERNEL | __GFP_COMP | 248 __GFP_ZERO, 2); 249 if (!udev->ll2_buf) { 250 rc = -ENOMEM; 251 goto exit_alloc_buf; 252 } 253 return rc; 254 255exit_alloc_buf: 256 free_page((unsigned long)udev->ll2_ring); 257 udev->ll2_ring = NULL; 258exit_alloc_ring: 259 return rc; 260} 261 262static int qedi_alloc_uio_rings(struct qedi_ctx *qedi) 263{ 264 struct qedi_uio_dev *udev = NULL; 265 int rc = 0; 266 267 list_for_each_entry(udev, &qedi_udev_list, list) { 268 if (udev->pdev == qedi->pdev) { 269 udev->qedi = qedi; 270 if (__qedi_alloc_uio_rings(udev)) { 271 udev->qedi = NULL; 272 return -ENOMEM; 273 } 274 qedi->udev = udev; 275 return 0; 276 } 277 } 278 279 udev = kzalloc(sizeof(*udev), GFP_KERNEL); 280 if (!udev) 281 goto err_udev; 282 283 udev->uio_dev = -1; 284 285 udev->qedi = qedi; 286 udev->pdev = qedi->pdev; 287 288 rc = __qedi_alloc_uio_rings(udev); 289 if (rc) 290 goto err_uctrl; 291 292 list_add(&udev->list, &qedi_udev_list); 293 294 pci_dev_get(udev->pdev); 295 qedi->udev = udev; 296 297 udev->tx_pkt = udev->ll2_buf; 298 udev->rx_pkt = udev->ll2_buf + qedi_ll2_buf_size; 299 return 0; 300 301 err_uctrl: 302 kfree(udev); 303 err_udev: 304 return -ENOMEM; 305} 306 307static int qedi_init_uio(struct qedi_ctx *qedi) 308{ 309 struct qedi_uio_dev *udev = qedi->udev; 310 struct uio_info *uinfo; 311 int ret = 0; 312 313 if (!udev) 314 return -ENOMEM; 315 316 uinfo = &udev->qedi_uinfo; 317 318 uinfo->mem[0].addr = (unsigned long)udev->uctrl; 319 uinfo->mem[0].size = sizeof(struct qedi_uio_ctrl); 320 uinfo->mem[0].memtype = UIO_MEM_LOGICAL; 321 322 uinfo->mem[1].addr = (unsigned long)udev->ll2_ring; 323 uinfo->mem[1].size = udev->ll2_ring_size; 324 uinfo->mem[1].memtype = UIO_MEM_LOGICAL; 325 326 uinfo->mem[2].addr = (unsigned long)udev->ll2_buf; 327 uinfo->mem[2].size = udev->ll2_buf_size; 328 uinfo->mem[2].memtype = UIO_MEM_LOGICAL; 329 330 uinfo->name = "qedi_uio"; 331 uinfo->version = QEDI_MODULE_VERSION; 332 uinfo->irq = UIO_IRQ_CUSTOM; 333 334 uinfo->open = qedi_uio_open; 335 uinfo->release = qedi_uio_close; 336 337 if (udev->uio_dev == -1) { 338 if (!uinfo->priv) { 339 uinfo->priv = udev; 340 341 ret = uio_register_device(&udev->pdev->dev, uinfo); 342 if (ret) { 343 QEDI_ERR(&qedi->dbg_ctx, 344 "UIO registration failed\n"); 345 } 346 } 347 } 348 349 return ret; 350} 351 352static int qedi_alloc_and_init_sb(struct qedi_ctx *qedi, 353 struct qed_sb_info *sb_info, u16 sb_id) 354{ 355 struct status_block *sb_virt; 356 dma_addr_t sb_phys; 357 int ret; 358 359 sb_virt = dma_alloc_coherent(&qedi->pdev->dev, 360 sizeof(struct status_block), &sb_phys, 361 GFP_KERNEL); 362 if (!sb_virt) { 363 QEDI_ERR(&qedi->dbg_ctx, 364 "Status block allocation failed for id = %d.\n", 365 sb_id); 366 return -ENOMEM; 367 } 368 369 ret = qedi_ops->common->sb_init(qedi->cdev, sb_info, sb_virt, sb_phys, 370 sb_id, QED_SB_TYPE_STORAGE); 371 if (ret) { 372 QEDI_ERR(&qedi->dbg_ctx, 373 "Status block initialization failed for id = %d.\n", 374 sb_id); 375 return ret; 376 } 377 378 return 0; 379} 380 381static void qedi_free_sb(struct qedi_ctx *qedi) 382{ 383 struct qed_sb_info *sb_info; 384 int id; 385 386 for (id = 0; id < MIN_NUM_CPUS_MSIX(qedi); id++) { 387 sb_info = &qedi->sb_array[id]; 388 if (sb_info->sb_virt) 389 dma_free_coherent(&qedi->pdev->dev, 390 sizeof(*sb_info->sb_virt), 391 (void *)sb_info->sb_virt, 392 sb_info->sb_phys); 393 } 394} 395 396static void qedi_free_fp(struct qedi_ctx *qedi) 397{ 398 kfree(qedi->fp_array); 399 kfree(qedi->sb_array); 400} 401 402static void qedi_destroy_fp(struct qedi_ctx *qedi) 403{ 404 qedi_free_sb(qedi); 405 qedi_free_fp(qedi); 406} 407 408static int qedi_alloc_fp(struct qedi_ctx *qedi) 409{ 410 int ret = 0; 411 412 qedi->fp_array = kcalloc(MIN_NUM_CPUS_MSIX(qedi), 413 sizeof(struct qedi_fastpath), GFP_KERNEL); 414 if (!qedi->fp_array) { 415 QEDI_ERR(&qedi->dbg_ctx, 416 "fastpath fp array allocation failed.\n"); 417 return -ENOMEM; 418 } 419 420 qedi->sb_array = kcalloc(MIN_NUM_CPUS_MSIX(qedi), 421 sizeof(struct qed_sb_info), GFP_KERNEL); 422 if (!qedi->sb_array) { 423 QEDI_ERR(&qedi->dbg_ctx, 424 "fastpath sb array allocation failed.\n"); 425 ret = -ENOMEM; 426 goto free_fp; 427 } 428 429 return ret; 430 431free_fp: 432 qedi_free_fp(qedi); 433 return ret; 434} 435 436static void qedi_int_fp(struct qedi_ctx *qedi) 437{ 438 struct qedi_fastpath *fp; 439 int id; 440 441 memset(qedi->fp_array, 0, MIN_NUM_CPUS_MSIX(qedi) * 442 sizeof(*qedi->fp_array)); 443 memset(qedi->sb_array, 0, MIN_NUM_CPUS_MSIX(qedi) * 444 sizeof(*qedi->sb_array)); 445 446 for (id = 0; id < MIN_NUM_CPUS_MSIX(qedi); id++) { 447 fp = &qedi->fp_array[id]; 448 fp->sb_info = &qedi->sb_array[id]; 449 fp->sb_id = id; 450 fp->qedi = qedi; 451 snprintf(fp->name, sizeof(fp->name), "%s-fp-%d", 452 "qedi", id); 453 454 /* fp_array[i] ---- irq cookie 455 * So init data which is needed in int ctx 456 */ 457 } 458} 459 460static int qedi_prepare_fp(struct qedi_ctx *qedi) 461{ 462 struct qedi_fastpath *fp; 463 int id, ret = 0; 464 465 ret = qedi_alloc_fp(qedi); 466 if (ret) 467 goto err; 468 469 qedi_int_fp(qedi); 470 471 for (id = 0; id < MIN_NUM_CPUS_MSIX(qedi); id++) { 472 fp = &qedi->fp_array[id]; 473 ret = qedi_alloc_and_init_sb(qedi, fp->sb_info, fp->sb_id); 474 if (ret) { 475 QEDI_ERR(&qedi->dbg_ctx, 476 "SB allocation and initialization failed.\n"); 477 ret = -EIO; 478 goto err_init; 479 } 480 } 481 482 return 0; 483 484err_init: 485 qedi_free_sb(qedi); 486 qedi_free_fp(qedi); 487err: 488 return ret; 489} 490 491static int qedi_setup_cid_que(struct qedi_ctx *qedi) 492{ 493 int i; 494 495 qedi->cid_que.cid_que_base = kmalloc_array(qedi->max_active_conns, 496 sizeof(u32), GFP_KERNEL); 497 if (!qedi->cid_que.cid_que_base) 498 return -ENOMEM; 499 500 qedi->cid_que.conn_cid_tbl = kmalloc_array(qedi->max_active_conns, 501 sizeof(struct qedi_conn *), 502 GFP_KERNEL); 503 if (!qedi->cid_que.conn_cid_tbl) { 504 kfree(qedi->cid_que.cid_que_base); 505 qedi->cid_que.cid_que_base = NULL; 506 return -ENOMEM; 507 } 508 509 qedi->cid_que.cid_que = (u32 *)qedi->cid_que.cid_que_base; 510 qedi->cid_que.cid_q_prod_idx = 0; 511 qedi->cid_que.cid_q_cons_idx = 0; 512 qedi->cid_que.cid_q_max_idx = qedi->max_active_conns; 513 qedi->cid_que.cid_free_cnt = qedi->max_active_conns; 514 515 for (i = 0; i < qedi->max_active_conns; i++) { 516 qedi->cid_que.cid_que[i] = i; 517 qedi->cid_que.conn_cid_tbl[i] = NULL; 518 } 519 520 return 0; 521} 522 523static void qedi_release_cid_que(struct qedi_ctx *qedi) 524{ 525 kfree(qedi->cid_que.cid_que_base); 526 qedi->cid_que.cid_que_base = NULL; 527 528 kfree(qedi->cid_que.conn_cid_tbl); 529 qedi->cid_que.conn_cid_tbl = NULL; 530} 531 532static int qedi_init_id_tbl(struct qedi_portid_tbl *id_tbl, u16 size, 533 u16 start_id, u16 next) 534{ 535 id_tbl->start = start_id; 536 id_tbl->max = size; 537 id_tbl->next = next; 538 spin_lock_init(&id_tbl->lock); 539 id_tbl->table = kcalloc(BITS_TO_LONGS(size), sizeof(long), GFP_KERNEL); 540 if (!id_tbl->table) 541 return -ENOMEM; 542 543 return 0; 544} 545 546static void qedi_free_id_tbl(struct qedi_portid_tbl *id_tbl) 547{ 548 kfree(id_tbl->table); 549 id_tbl->table = NULL; 550} 551 552int qedi_alloc_id(struct qedi_portid_tbl *id_tbl, u16 id) 553{ 554 int ret = -1; 555 556 id -= id_tbl->start; 557 if (id >= id_tbl->max) 558 return ret; 559 560 spin_lock(&id_tbl->lock); 561 if (!test_bit(id, id_tbl->table)) { 562 set_bit(id, id_tbl->table); 563 ret = 0; 564 } 565 spin_unlock(&id_tbl->lock); 566 return ret; 567} 568 569u16 qedi_alloc_new_id(struct qedi_portid_tbl *id_tbl) 570{ 571 u16 id; 572 573 spin_lock(&id_tbl->lock); 574 id = find_next_zero_bit(id_tbl->table, id_tbl->max, id_tbl->next); 575 if (id >= id_tbl->max) { 576 id = QEDI_LOCAL_PORT_INVALID; 577 if (id_tbl->next != 0) { 578 id = find_first_zero_bit(id_tbl->table, id_tbl->next); 579 if (id >= id_tbl->next) 580 id = QEDI_LOCAL_PORT_INVALID; 581 } 582 } 583 584 if (id < id_tbl->max) { 585 set_bit(id, id_tbl->table); 586 id_tbl->next = (id + 1) & (id_tbl->max - 1); 587 id += id_tbl->start; 588 } 589 590 spin_unlock(&id_tbl->lock); 591 592 return id; 593} 594 595void qedi_free_id(struct qedi_portid_tbl *id_tbl, u16 id) 596{ 597 if (id == QEDI_LOCAL_PORT_INVALID) 598 return; 599 600 id -= id_tbl->start; 601 if (id >= id_tbl->max) 602 return; 603 604 clear_bit(id, id_tbl->table); 605} 606 607static void qedi_cm_free_mem(struct qedi_ctx *qedi) 608{ 609 kfree(qedi->ep_tbl); 610 qedi->ep_tbl = NULL; 611 qedi_free_id_tbl(&qedi->lcl_port_tbl); 612} 613 614static int qedi_cm_alloc_mem(struct qedi_ctx *qedi) 615{ 616 u16 port_id; 617 618 qedi->ep_tbl = kzalloc((qedi->max_active_conns * 619 sizeof(struct qedi_endpoint *)), GFP_KERNEL); 620 if (!qedi->ep_tbl) 621 return -ENOMEM; 622 port_id = get_random_u32_below(QEDI_LOCAL_PORT_RANGE); 623 if (qedi_init_id_tbl(&qedi->lcl_port_tbl, QEDI_LOCAL_PORT_RANGE, 624 QEDI_LOCAL_PORT_MIN, port_id)) { 625 qedi_cm_free_mem(qedi); 626 return -ENOMEM; 627 } 628 629 return 0; 630} 631 632static struct qedi_ctx *qedi_host_alloc(struct pci_dev *pdev) 633{ 634 struct Scsi_Host *shost; 635 struct qedi_ctx *qedi = NULL; 636 637 shost = iscsi_host_alloc(&qedi_host_template, 638 sizeof(struct qedi_ctx), 0); 639 if (!shost) { 640 QEDI_ERR(NULL, "Could not allocate shost\n"); 641 goto exit_setup_shost; 642 } 643 644 shost->max_id = QEDI_MAX_ISCSI_CONNS_PER_HBA - 1; 645 shost->max_channel = 0; 646 shost->max_lun = ~0; 647 shost->max_cmd_len = 16; 648 shost->transportt = qedi_scsi_transport; 649 650 qedi = iscsi_host_priv(shost); 651 memset(qedi, 0, sizeof(*qedi)); 652 qedi->shost = shost; 653 qedi->dbg_ctx.host_no = shost->host_no; 654 qedi->pdev = pdev; 655 qedi->dbg_ctx.pdev = pdev; 656 qedi->max_active_conns = ISCSI_MAX_SESS_PER_HBA; 657 qedi->max_sqes = QEDI_SQ_SIZE; 658 659 shost->nr_hw_queues = MIN_NUM_CPUS_MSIX(qedi); 660 661 pci_set_drvdata(pdev, qedi); 662 663exit_setup_shost: 664 return qedi; 665} 666 667static int qedi_ll2_rx(void *cookie, struct sk_buff *skb, u32 arg1, u32 arg2) 668{ 669 struct qedi_ctx *qedi = (struct qedi_ctx *)cookie; 670 struct skb_work_list *work; 671 struct ethhdr *eh; 672 673 if (!qedi) { 674 QEDI_ERR(NULL, "qedi is NULL\n"); 675 return -1; 676 } 677 678 if (!test_bit(UIO_DEV_OPENED, &qedi->flags)) { 679 QEDI_INFO(&qedi->dbg_ctx, QEDI_LOG_UIO, 680 "UIO DEV is not opened\n"); 681 kfree_skb(skb); 682 return 0; 683 } 684 685 eh = (struct ethhdr *)skb->data; 686 /* Undo VLAN encapsulation */ 687 if (eh->h_proto == htons(ETH_P_8021Q)) { 688 memmove((u8 *)eh + VLAN_HLEN, eh, ETH_ALEN * 2); 689 eh = (struct ethhdr *)skb_pull(skb, VLAN_HLEN); 690 skb_reset_mac_header(skb); 691 } 692 693 /* Filter out non FIP/FCoE frames here to free them faster */ 694 if (eh->h_proto != htons(ETH_P_ARP) && 695 eh->h_proto != htons(ETH_P_IP) && 696 eh->h_proto != htons(ETH_P_IPV6)) { 697 QEDI_INFO(&qedi->dbg_ctx, QEDI_LOG_LL2, 698 "Dropping frame ethertype [0x%x] len [0x%x].\n", 699 eh->h_proto, skb->len); 700 kfree_skb(skb); 701 return 0; 702 } 703 704 QEDI_INFO(&qedi->dbg_ctx, QEDI_LOG_LL2, 705 "Allowed frame ethertype [0x%x] len [0x%x].\n", 706 eh->h_proto, skb->len); 707 708 work = kzalloc(sizeof(*work), GFP_ATOMIC); 709 if (!work) { 710 QEDI_WARN(&qedi->dbg_ctx, 711 "Could not allocate work so dropping frame.\n"); 712 kfree_skb(skb); 713 return 0; 714 } 715 716 INIT_LIST_HEAD(&work->list); 717 work->skb = skb; 718 719 if (skb_vlan_tag_present(skb)) 720 work->vlan_id = skb_vlan_tag_get(skb); 721 722 if (work->vlan_id) 723 __vlan_insert_tag(work->skb, htons(ETH_P_8021Q), work->vlan_id); 724 725 spin_lock_bh(&qedi->ll2_lock); 726 list_add_tail(&work->list, &qedi->ll2_skb_list); 727 spin_unlock_bh(&qedi->ll2_lock); 728 729 wake_up_process(qedi->ll2_recv_thread); 730 731 return 0; 732} 733 734/* map this skb to iscsiuio mmaped region */ 735static int qedi_ll2_process_skb(struct qedi_ctx *qedi, struct sk_buff *skb, 736 u16 vlan_id) 737{ 738 struct qedi_uio_dev *udev = NULL; 739 struct qedi_uio_ctrl *uctrl = NULL; 740 struct qedi_rx_bd rxbd; 741 struct qedi_rx_bd *p_rxbd; 742 u32 rx_bd_prod; 743 void *pkt; 744 int len = 0; 745 u32 prod; 746 747 if (!qedi) { 748 QEDI_ERR(NULL, "qedi is NULL\n"); 749 return -1; 750 } 751 752 udev = qedi->udev; 753 uctrl = udev->uctrl; 754 755 ++uctrl->hw_rx_prod_cnt; 756 prod = (uctrl->hw_rx_prod + 1) % RX_RING; 757 758 pkt = udev->rx_pkt + (prod * qedi_ll2_buf_size); 759 len = min_t(u32, skb->len, (u32)qedi_ll2_buf_size); 760 memcpy(pkt, skb->data, len); 761 762 memset(&rxbd, 0, sizeof(rxbd)); 763 rxbd.rx_pkt_index = prod; 764 rxbd.rx_pkt_len = len; 765 rxbd.vlan_id = vlan_id; 766 767 uctrl->hw_rx_bd_prod = (uctrl->hw_rx_bd_prod + 1) % QEDI_NUM_RX_BD; 768 rx_bd_prod = uctrl->hw_rx_bd_prod; 769 p_rxbd = (struct qedi_rx_bd *)udev->ll2_ring; 770 p_rxbd += rx_bd_prod; 771 772 memcpy(p_rxbd, &rxbd, sizeof(rxbd)); 773 774 QEDI_INFO(&qedi->dbg_ctx, QEDI_LOG_LL2, 775 "hw_rx_prod [%d] prod [%d] hw_rx_bd_prod [%d] rx_pkt_idx [%d] rx_len [%d].\n", 776 uctrl->hw_rx_prod, prod, uctrl->hw_rx_bd_prod, 777 rxbd.rx_pkt_index, rxbd.rx_pkt_len); 778 QEDI_INFO(&qedi->dbg_ctx, QEDI_LOG_LL2, 779 "host_rx_cons [%d] hw_rx_bd_cons [%d].\n", 780 uctrl->host_rx_cons, uctrl->host_rx_bd_cons); 781 782 uctrl->hw_rx_prod = prod; 783 784 /* notify the iscsiuio about new packet */ 785 uio_event_notify(&udev->qedi_uinfo); 786 787 return 0; 788} 789 790static void qedi_ll2_free_skbs(struct qedi_ctx *qedi) 791{ 792 struct skb_work_list *work, *work_tmp; 793 794 spin_lock_bh(&qedi->ll2_lock); 795 list_for_each_entry_safe(work, work_tmp, &qedi->ll2_skb_list, list) { 796 list_del(&work->list); 797 kfree_skb(work->skb); 798 kfree(work); 799 } 800 spin_unlock_bh(&qedi->ll2_lock); 801} 802 803static int qedi_ll2_recv_thread(void *arg) 804{ 805 struct qedi_ctx *qedi = (struct qedi_ctx *)arg; 806 struct skb_work_list *work, *work_tmp; 807 808 set_user_nice(current, -20); 809 810 while (!kthread_should_stop()) { 811 spin_lock_bh(&qedi->ll2_lock); 812 list_for_each_entry_safe(work, work_tmp, &qedi->ll2_skb_list, 813 list) { 814 list_del(&work->list); 815 qedi_ll2_process_skb(qedi, work->skb, work->vlan_id); 816 kfree_skb(work->skb); 817 kfree(work); 818 } 819 set_current_state(TASK_INTERRUPTIBLE); 820 spin_unlock_bh(&qedi->ll2_lock); 821 schedule(); 822 } 823 824 __set_current_state(TASK_RUNNING); 825 return 0; 826} 827 828static int qedi_set_iscsi_pf_param(struct qedi_ctx *qedi) 829{ 830 u8 num_sq_pages; 831 u32 log_page_size; 832 int rval = 0; 833 834 835 num_sq_pages = (MAX_OUTSTANDING_TASKS_PER_CON * 8) / QEDI_PAGE_SIZE; 836 837 qedi->num_queues = MIN_NUM_CPUS_MSIX(qedi); 838 839 QEDI_INFO(&qedi->dbg_ctx, QEDI_LOG_INFO, 840 "Number of CQ count is %d\n", qedi->num_queues); 841 842 memset(&qedi->pf_params.iscsi_pf_params, 0, 843 sizeof(qedi->pf_params.iscsi_pf_params)); 844 845 qedi->p_cpuq = dma_alloc_coherent(&qedi->pdev->dev, 846 qedi->num_queues * sizeof(struct qedi_glbl_q_params), 847 &qedi->hw_p_cpuq, GFP_KERNEL); 848 if (!qedi->p_cpuq) { 849 QEDI_ERR(&qedi->dbg_ctx, "dma_alloc_coherent fail\n"); 850 rval = -1; 851 goto err_alloc_mem; 852 } 853 854 rval = qedi_alloc_global_queues(qedi); 855 if (rval) { 856 QEDI_ERR(&qedi->dbg_ctx, "Global queue allocation failed.\n"); 857 rval = -1; 858 goto err_alloc_mem; 859 } 860 861 qedi->pf_params.iscsi_pf_params.num_cons = QEDI_MAX_ISCSI_CONNS_PER_HBA; 862 qedi->pf_params.iscsi_pf_params.num_tasks = QEDI_MAX_ISCSI_TASK; 863 qedi->pf_params.iscsi_pf_params.half_way_close_timeout = 10; 864 qedi->pf_params.iscsi_pf_params.num_sq_pages_in_ring = num_sq_pages; 865 qedi->pf_params.iscsi_pf_params.num_r2tq_pages_in_ring = num_sq_pages; 866 qedi->pf_params.iscsi_pf_params.num_uhq_pages_in_ring = num_sq_pages; 867 qedi->pf_params.iscsi_pf_params.num_queues = qedi->num_queues; 868 qedi->pf_params.iscsi_pf_params.debug_mode = qedi_fw_debug; 869 qedi->pf_params.iscsi_pf_params.two_msl_timer = QED_TWO_MSL_TIMER_DFLT; 870 qedi->pf_params.iscsi_pf_params.tx_sws_timer = QED_TX_SWS_TIMER_DFLT; 871 qedi->pf_params.iscsi_pf_params.max_fin_rt = 2; 872 873 for (log_page_size = 0 ; log_page_size < 32 ; log_page_size++) { 874 if ((1 << log_page_size) == QEDI_PAGE_SIZE) 875 break; 876 } 877 qedi->pf_params.iscsi_pf_params.log_page_size = log_page_size; 878 879 qedi->pf_params.iscsi_pf_params.glbl_q_params_addr = 880 (u64)qedi->hw_p_cpuq; 881 882 /* RQ BDQ initializations. 883 * rq_num_entries: suggested value for Initiator is 16 (4KB RQ) 884 * rqe_log_size: 8 for 256B RQE 885 */ 886 qedi->pf_params.iscsi_pf_params.rqe_log_size = 8; 887 /* BDQ address and size */ 888 qedi->pf_params.iscsi_pf_params.bdq_pbl_base_addr[BDQ_ID_RQ] = 889 qedi->bdq_pbl_list_dma; 890 qedi->pf_params.iscsi_pf_params.bdq_pbl_num_entries[BDQ_ID_RQ] = 891 qedi->bdq_pbl_list_num_entries; 892 qedi->pf_params.iscsi_pf_params.rq_buffer_size = QEDI_BDQ_BUF_SIZE; 893 894 /* cq_num_entries: num_tasks + rq_num_entries */ 895 qedi->pf_params.iscsi_pf_params.cq_num_entries = 2048; 896 897 qedi->pf_params.iscsi_pf_params.gl_rq_pi = QEDI_PROTO_CQ_PROD_IDX; 898 qedi->pf_params.iscsi_pf_params.gl_cmd_pi = 1; 899 900err_alloc_mem: 901 return rval; 902} 903 904/* Free DMA coherent memory for array of queue pointers we pass to qed */ 905static void qedi_free_iscsi_pf_param(struct qedi_ctx *qedi) 906{ 907 size_t size = 0; 908 909 if (qedi->p_cpuq) { 910 size = qedi->num_queues * sizeof(struct qedi_glbl_q_params); 911 dma_free_coherent(&qedi->pdev->dev, size, qedi->p_cpuq, 912 qedi->hw_p_cpuq); 913 } 914 915 qedi_free_global_queues(qedi); 916 917 kfree(qedi->global_queues); 918} 919 920static void qedi_get_boot_tgt_info(struct nvm_iscsi_block *block, 921 struct qedi_boot_target *tgt, u8 index) 922{ 923 u32 ipv6_en; 924 925 ipv6_en = !!(block->generic.ctrl_flags & 926 NVM_ISCSI_CFG_GEN_IPV6_ENABLED); 927 928 snprintf(tgt->iscsi_name, sizeof(tgt->iscsi_name), "%s", 929 block->target[index].target_name.byte); 930 931 tgt->ipv6_en = ipv6_en; 932 933 if (ipv6_en) 934 snprintf(tgt->ip_addr, IPV6_LEN, "%pI6\n", 935 block->target[index].ipv6_addr.byte); 936 else 937 snprintf(tgt->ip_addr, IPV4_LEN, "%pI4\n", 938 block->target[index].ipv4_addr.byte); 939} 940 941static int qedi_find_boot_info(struct qedi_ctx *qedi, 942 struct qed_mfw_tlv_iscsi *iscsi, 943 struct nvm_iscsi_block *block) 944{ 945 struct qedi_boot_target *pri_tgt = NULL, *sec_tgt = NULL; 946 u32 pri_ctrl_flags = 0, sec_ctrl_flags = 0, found = 0; 947 struct iscsi_cls_session *cls_sess; 948 struct iscsi_cls_conn *cls_conn; 949 struct qedi_conn *qedi_conn; 950 struct iscsi_session *sess; 951 struct iscsi_conn *conn; 952 char ep_ip_addr[64]; 953 int i, ret = 0; 954 955 pri_ctrl_flags = !!(block->target[0].ctrl_flags & 956 NVM_ISCSI_CFG_TARGET_ENABLED); 957 if (pri_ctrl_flags) { 958 pri_tgt = kzalloc(sizeof(*pri_tgt), GFP_KERNEL); 959 if (!pri_tgt) 960 return -1; 961 qedi_get_boot_tgt_info(block, pri_tgt, 0); 962 } 963 964 sec_ctrl_flags = !!(block->target[1].ctrl_flags & 965 NVM_ISCSI_CFG_TARGET_ENABLED); 966 if (sec_ctrl_flags) { 967 sec_tgt = kzalloc(sizeof(*sec_tgt), GFP_KERNEL); 968 if (!sec_tgt) { 969 ret = -1; 970 goto free_tgt; 971 } 972 qedi_get_boot_tgt_info(block, sec_tgt, 1); 973 } 974 975 for (i = 0; i < qedi->max_active_conns; i++) { 976 qedi_conn = qedi_get_conn_from_id(qedi, i); 977 if (!qedi_conn) 978 continue; 979 980 if (qedi_conn->ep->ip_type == TCP_IPV4) 981 snprintf(ep_ip_addr, IPV4_LEN, "%pI4\n", 982 qedi_conn->ep->dst_addr); 983 else 984 snprintf(ep_ip_addr, IPV6_LEN, "%pI6\n", 985 qedi_conn->ep->dst_addr); 986 987 cls_conn = qedi_conn->cls_conn; 988 conn = cls_conn->dd_data; 989 cls_sess = iscsi_conn_to_session(cls_conn); 990 sess = cls_sess->dd_data; 991 992 if (!iscsi_is_session_online(cls_sess)) 993 continue; 994 995 if (!sess->targetname) 996 continue; 997 998 if (pri_ctrl_flags) { 999 if (!strcmp(pri_tgt->iscsi_name, sess->targetname) && 1000 !strcmp(pri_tgt->ip_addr, ep_ip_addr)) { 1001 found = 1; 1002 break; 1003 } 1004 } 1005 1006 if (sec_ctrl_flags) { 1007 if (!strcmp(sec_tgt->iscsi_name, sess->targetname) && 1008 !strcmp(sec_tgt->ip_addr, ep_ip_addr)) { 1009 found = 1; 1010 break; 1011 } 1012 } 1013 } 1014 1015 if (found) { 1016 if (conn->hdrdgst_en) { 1017 iscsi->header_digest_set = true; 1018 iscsi->header_digest = 1; 1019 } 1020 1021 if (conn->datadgst_en) { 1022 iscsi->data_digest_set = true; 1023 iscsi->data_digest = 1; 1024 } 1025 iscsi->boot_taget_portal_set = true; 1026 iscsi->boot_taget_portal = sess->tpgt; 1027 1028 } else { 1029 ret = -1; 1030 } 1031 1032 if (sec_ctrl_flags) 1033 kfree(sec_tgt); 1034free_tgt: 1035 if (pri_ctrl_flags) 1036 kfree(pri_tgt); 1037 1038 return ret; 1039} 1040 1041static void qedi_get_generic_tlv_data(void *dev, struct qed_generic_tlvs *data) 1042{ 1043 struct qedi_ctx *qedi; 1044 1045 if (!dev) { 1046 QEDI_INFO(NULL, QEDI_LOG_EVT, 1047 "dev is NULL so ignoring get_generic_tlv_data request.\n"); 1048 return; 1049 } 1050 qedi = (struct qedi_ctx *)dev; 1051 1052 memset(data, 0, sizeof(struct qed_generic_tlvs)); 1053 ether_addr_copy(data->mac[0], qedi->mac); 1054} 1055 1056/* 1057 * Protocol TLV handler 1058 */ 1059static void qedi_get_protocol_tlv_data(void *dev, void *data) 1060{ 1061 struct qed_mfw_tlv_iscsi *iscsi = data; 1062 struct qed_iscsi_stats *fw_iscsi_stats; 1063 struct nvm_iscsi_block *block = NULL; 1064 u32 chap_en = 0, mchap_en = 0; 1065 struct qedi_ctx *qedi = dev; 1066 int rval = 0; 1067 1068 fw_iscsi_stats = kmalloc(sizeof(*fw_iscsi_stats), GFP_KERNEL); 1069 if (!fw_iscsi_stats) { 1070 QEDI_ERR(&qedi->dbg_ctx, 1071 "Could not allocate memory for fw_iscsi_stats.\n"); 1072 goto exit_get_data; 1073 } 1074 1075 mutex_lock(&qedi->stats_lock); 1076 /* Query firmware for offload stats */ 1077 qedi_ops->get_stats(qedi->cdev, fw_iscsi_stats); 1078 mutex_unlock(&qedi->stats_lock); 1079 1080 iscsi->rx_frames_set = true; 1081 iscsi->rx_frames = fw_iscsi_stats->iscsi_rx_packet_cnt; 1082 iscsi->rx_bytes_set = true; 1083 iscsi->rx_bytes = fw_iscsi_stats->iscsi_rx_bytes_cnt; 1084 iscsi->tx_frames_set = true; 1085 iscsi->tx_frames = fw_iscsi_stats->iscsi_tx_packet_cnt; 1086 iscsi->tx_bytes_set = true; 1087 iscsi->tx_bytes = fw_iscsi_stats->iscsi_tx_bytes_cnt; 1088 iscsi->frame_size_set = true; 1089 iscsi->frame_size = qedi->ll2_mtu; 1090 block = qedi_get_nvram_block(qedi); 1091 if (block) { 1092 chap_en = !!(block->generic.ctrl_flags & 1093 NVM_ISCSI_CFG_GEN_CHAP_ENABLED); 1094 mchap_en = !!(block->generic.ctrl_flags & 1095 NVM_ISCSI_CFG_GEN_CHAP_MUTUAL_ENABLED); 1096 1097 iscsi->auth_method_set = (chap_en || mchap_en) ? true : false; 1098 iscsi->auth_method = 1; 1099 if (chap_en) 1100 iscsi->auth_method = 2; 1101 if (mchap_en) 1102 iscsi->auth_method = 3; 1103 1104 iscsi->tx_desc_size_set = true; 1105 iscsi->tx_desc_size = QEDI_SQ_SIZE; 1106 iscsi->rx_desc_size_set = true; 1107 iscsi->rx_desc_size = QEDI_CQ_SIZE; 1108 1109 /* tpgt, hdr digest, data digest */ 1110 rval = qedi_find_boot_info(qedi, iscsi, block); 1111 if (rval) 1112 QEDI_INFO(&qedi->dbg_ctx, QEDI_LOG_INFO, 1113 "Boot target not set"); 1114 } 1115 1116 kfree(fw_iscsi_stats); 1117exit_get_data: 1118 return; 1119} 1120 1121void qedi_schedule_hw_err_handler(void *dev, 1122 enum qed_hw_err_type err_type) 1123{ 1124 struct qedi_ctx *qedi = (struct qedi_ctx *)dev; 1125 unsigned long override_flags = qedi_flags_override; 1126 1127 if (override_flags && test_bit(QEDI_ERR_OVERRIDE_EN, &override_flags)) 1128 qedi->qedi_err_flags = qedi_flags_override; 1129 1130 QEDI_INFO(&qedi->dbg_ctx, QEDI_LOG_INFO, 1131 "HW error handler scheduled, err=%d err_flags=0x%x\n", 1132 err_type, qedi->qedi_err_flags); 1133 1134 switch (err_type) { 1135 case QED_HW_ERR_FAN_FAIL: 1136 schedule_delayed_work(&qedi->board_disable_work, 0); 1137 break; 1138 case QED_HW_ERR_MFW_RESP_FAIL: 1139 case QED_HW_ERR_HW_ATTN: 1140 case QED_HW_ERR_DMAE_FAIL: 1141 case QED_HW_ERR_RAMROD_FAIL: 1142 case QED_HW_ERR_FW_ASSERT: 1143 /* Prevent HW attentions from being reasserted */ 1144 if (test_bit(QEDI_ERR_ATTN_CLR_EN, &qedi->qedi_err_flags)) 1145 qedi_ops->common->attn_clr_enable(qedi->cdev, true); 1146 1147 if (err_type == QED_HW_ERR_RAMROD_FAIL && 1148 test_bit(QEDI_ERR_IS_RECOVERABLE, &qedi->qedi_err_flags)) 1149 qedi_ops->common->recovery_process(qedi->cdev); 1150 1151 break; 1152 default: 1153 break; 1154 } 1155} 1156 1157static void qedi_schedule_recovery_handler(void *dev) 1158{ 1159 struct qedi_ctx *qedi = dev; 1160 1161 QEDI_ERR(&qedi->dbg_ctx, "Recovery handler scheduled.\n"); 1162 1163 if (test_and_set_bit(QEDI_IN_RECOVERY, &qedi->flags)) 1164 return; 1165 1166 atomic_set(&qedi->link_state, QEDI_LINK_DOWN); 1167 1168 schedule_delayed_work(&qedi->recovery_work, 0); 1169} 1170 1171static void qedi_set_conn_recovery(struct iscsi_cls_session *cls_session) 1172{ 1173 struct iscsi_session *session = cls_session->dd_data; 1174 struct iscsi_conn *conn = session->leadconn; 1175 struct qedi_conn *qedi_conn = conn->dd_data; 1176 1177 qedi_start_conn_recovery(qedi_conn->qedi, qedi_conn); 1178} 1179 1180static void qedi_link_update(void *dev, struct qed_link_output *link) 1181{ 1182 struct qedi_ctx *qedi = (struct qedi_ctx *)dev; 1183 1184 if (link->link_up) { 1185 QEDI_INFO(&qedi->dbg_ctx, QEDI_LOG_INFO, "Link Up event.\n"); 1186 atomic_set(&qedi->link_state, QEDI_LINK_UP); 1187 } else { 1188 QEDI_INFO(&qedi->dbg_ctx, QEDI_LOG_INFO, 1189 "Link Down event.\n"); 1190 atomic_set(&qedi->link_state, QEDI_LINK_DOWN); 1191 iscsi_host_for_each_session(qedi->shost, qedi_set_conn_recovery); 1192 } 1193} 1194 1195static struct qed_iscsi_cb_ops qedi_cb_ops = { 1196 { 1197 .link_update = qedi_link_update, 1198 .schedule_recovery_handler = qedi_schedule_recovery_handler, 1199 .schedule_hw_err_handler = qedi_schedule_hw_err_handler, 1200 .get_protocol_tlv_data = qedi_get_protocol_tlv_data, 1201 .get_generic_tlv_data = qedi_get_generic_tlv_data, 1202 } 1203}; 1204 1205static int qedi_queue_cqe(struct qedi_ctx *qedi, union iscsi_cqe *cqe, 1206 u16 que_idx, struct qedi_percpu_s *p) 1207{ 1208 struct qedi_work *qedi_work; 1209 struct qedi_conn *q_conn; 1210 struct qedi_cmd *qedi_cmd; 1211 u32 iscsi_cid; 1212 int rc = 0; 1213 1214 iscsi_cid = cqe->cqe_common.conn_id; 1215 q_conn = qedi->cid_que.conn_cid_tbl[iscsi_cid]; 1216 if (!q_conn) { 1217 QEDI_WARN(&qedi->dbg_ctx, 1218 "Session no longer exists for cid=0x%x!!\n", 1219 iscsi_cid); 1220 return -1; 1221 } 1222 1223 switch (cqe->cqe_common.cqe_type) { 1224 case ISCSI_CQE_TYPE_SOLICITED: 1225 case ISCSI_CQE_TYPE_SOLICITED_WITH_SENSE: 1226 qedi_cmd = qedi_get_cmd_from_tid(qedi, cqe->cqe_solicited.itid); 1227 if (!qedi_cmd) { 1228 rc = -1; 1229 break; 1230 } 1231 INIT_LIST_HEAD(&qedi_cmd->cqe_work.list); 1232 qedi_cmd->cqe_work.qedi = qedi; 1233 memcpy(&qedi_cmd->cqe_work.cqe, cqe, sizeof(union iscsi_cqe)); 1234 qedi_cmd->cqe_work.que_idx = que_idx; 1235 qedi_cmd->cqe_work.is_solicited = true; 1236 list_add_tail(&qedi_cmd->cqe_work.list, &p->work_list); 1237 break; 1238 case ISCSI_CQE_TYPE_UNSOLICITED: 1239 case ISCSI_CQE_TYPE_DUMMY: 1240 case ISCSI_CQE_TYPE_TASK_CLEANUP: 1241 qedi_work = kzalloc(sizeof(*qedi_work), GFP_ATOMIC); 1242 if (!qedi_work) { 1243 rc = -1; 1244 break; 1245 } 1246 INIT_LIST_HEAD(&qedi_work->list); 1247 qedi_work->qedi = qedi; 1248 memcpy(&qedi_work->cqe, cqe, sizeof(union iscsi_cqe)); 1249 qedi_work->que_idx = que_idx; 1250 qedi_work->is_solicited = false; 1251 list_add_tail(&qedi_work->list, &p->work_list); 1252 break; 1253 default: 1254 rc = -1; 1255 QEDI_ERR(&qedi->dbg_ctx, "FW Error cqe.\n"); 1256 } 1257 return rc; 1258} 1259 1260static bool qedi_process_completions(struct qedi_fastpath *fp) 1261{ 1262 struct qedi_ctx *qedi = fp->qedi; 1263 struct qed_sb_info *sb_info = fp->sb_info; 1264 struct status_block *sb = sb_info->sb_virt; 1265 struct qedi_percpu_s *p = NULL; 1266 struct global_queue *que; 1267 u16 prod_idx; 1268 unsigned long flags; 1269 union iscsi_cqe *cqe; 1270 int cpu; 1271 int ret; 1272 1273 /* Get the current firmware producer index */ 1274 prod_idx = sb->pi_array[QEDI_PROTO_CQ_PROD_IDX]; 1275 1276 if (prod_idx >= QEDI_CQ_SIZE) 1277 prod_idx = prod_idx % QEDI_CQ_SIZE; 1278 1279 que = qedi->global_queues[fp->sb_id]; 1280 QEDI_INFO(&qedi->dbg_ctx, QEDI_LOG_IO, 1281 "Before: global queue=%p prod_idx=%d cons_idx=%d, sb_id=%d\n", 1282 que, prod_idx, que->cq_cons_idx, fp->sb_id); 1283 1284 qedi->intr_cpu = fp->sb_id; 1285 cpu = smp_processor_id(); 1286 p = &per_cpu(qedi_percpu, cpu); 1287 1288 if (unlikely(!p->iothread)) 1289 WARN_ON(1); 1290 1291 spin_lock_irqsave(&p->p_work_lock, flags); 1292 while (que->cq_cons_idx != prod_idx) { 1293 cqe = &que->cq[que->cq_cons_idx]; 1294 1295 QEDI_INFO(&qedi->dbg_ctx, QEDI_LOG_IO, 1296 "cqe=%p prod_idx=%d cons_idx=%d.\n", 1297 cqe, prod_idx, que->cq_cons_idx); 1298 1299 ret = qedi_queue_cqe(qedi, cqe, fp->sb_id, p); 1300 if (ret) 1301 QEDI_WARN(&qedi->dbg_ctx, 1302 "Dropping CQE 0x%x for cid=0x%x.\n", 1303 que->cq_cons_idx, cqe->cqe_common.conn_id); 1304 1305 que->cq_cons_idx++; 1306 if (que->cq_cons_idx == QEDI_CQ_SIZE) 1307 que->cq_cons_idx = 0; 1308 } 1309 wake_up_process(p->iothread); 1310 spin_unlock_irqrestore(&p->p_work_lock, flags); 1311 1312 return true; 1313} 1314 1315static bool qedi_fp_has_work(struct qedi_fastpath *fp) 1316{ 1317 struct qedi_ctx *qedi = fp->qedi; 1318 struct global_queue *que; 1319 struct qed_sb_info *sb_info = fp->sb_info; 1320 struct status_block *sb = sb_info->sb_virt; 1321 u16 prod_idx; 1322 1323 barrier(); 1324 1325 /* Get the current firmware producer index */ 1326 prod_idx = sb->pi_array[QEDI_PROTO_CQ_PROD_IDX]; 1327 1328 /* Get the pointer to the global CQ this completion is on */ 1329 que = qedi->global_queues[fp->sb_id]; 1330 1331 /* prod idx wrap around uint16 */ 1332 if (prod_idx >= QEDI_CQ_SIZE) 1333 prod_idx = prod_idx % QEDI_CQ_SIZE; 1334 1335 return (que->cq_cons_idx != prod_idx); 1336} 1337 1338/* MSI-X fastpath handler code */ 1339static irqreturn_t qedi_msix_handler(int irq, void *dev_id) 1340{ 1341 struct qedi_fastpath *fp = dev_id; 1342 struct qedi_ctx *qedi = fp->qedi; 1343 bool wake_io_thread = true; 1344 1345 qed_sb_ack(fp->sb_info, IGU_INT_DISABLE, 0); 1346 1347process_again: 1348 wake_io_thread = qedi_process_completions(fp); 1349 if (wake_io_thread) { 1350 QEDI_INFO(&qedi->dbg_ctx, QEDI_LOG_DISC, 1351 "process already running\n"); 1352 } 1353 1354 if (!qedi_fp_has_work(fp)) 1355 qed_sb_update_sb_idx(fp->sb_info); 1356 1357 /* Check for more work */ 1358 rmb(); 1359 1360 if (!qedi_fp_has_work(fp)) 1361 qed_sb_ack(fp->sb_info, IGU_INT_ENABLE, 1); 1362 else 1363 goto process_again; 1364 1365 return IRQ_HANDLED; 1366} 1367 1368/* simd handler for MSI/INTa */ 1369static void qedi_simd_int_handler(void *cookie) 1370{ 1371 /* Cookie is qedi_ctx struct */ 1372 struct qedi_ctx *qedi = (struct qedi_ctx *)cookie; 1373 1374 QEDI_WARN(&qedi->dbg_ctx, "qedi=%p.\n", qedi); 1375} 1376 1377#define QEDI_SIMD_HANDLER_NUM 0 1378static void qedi_sync_free_irqs(struct qedi_ctx *qedi) 1379{ 1380 int i; 1381 u16 idx; 1382 1383 if (qedi->int_info.msix_cnt) { 1384 for (i = 0; i < qedi->int_info.used_cnt; i++) { 1385 idx = i * qedi->dev_info.common.num_hwfns + 1386 qedi_ops->common->get_affin_hwfn_idx(qedi->cdev); 1387 1388 QEDI_INFO(&qedi->dbg_ctx, QEDI_LOG_INFO, 1389 "Freeing IRQ #%d vector_idx=%d.\n", i, idx); 1390 1391 synchronize_irq(qedi->int_info.msix[idx].vector); 1392 irq_set_affinity_hint(qedi->int_info.msix[idx].vector, 1393 NULL); 1394 free_irq(qedi->int_info.msix[idx].vector, 1395 &qedi->fp_array[i]); 1396 } 1397 } else { 1398 qedi_ops->common->simd_handler_clean(qedi->cdev, 1399 QEDI_SIMD_HANDLER_NUM); 1400 } 1401 1402 qedi->int_info.used_cnt = 0; 1403 qedi_ops->common->set_fp_int(qedi->cdev, 0); 1404} 1405 1406static int qedi_request_msix_irq(struct qedi_ctx *qedi) 1407{ 1408 int i, rc, cpu; 1409 u16 idx; 1410 1411 cpu = cpumask_first(cpu_online_mask); 1412 for (i = 0; i < qedi->msix_count; i++) { 1413 idx = i * qedi->dev_info.common.num_hwfns + 1414 qedi_ops->common->get_affin_hwfn_idx(qedi->cdev); 1415 1416 QEDI_INFO(&qedi->dbg_ctx, QEDI_LOG_INFO, 1417 "dev_info: num_hwfns=%d affin_hwfn_idx=%d.\n", 1418 qedi->dev_info.common.num_hwfns, 1419 qedi_ops->common->get_affin_hwfn_idx(qedi->cdev)); 1420 1421 rc = request_irq(qedi->int_info.msix[idx].vector, 1422 qedi_msix_handler, 0, "qedi", 1423 &qedi->fp_array[i]); 1424 if (rc) { 1425 QEDI_WARN(&qedi->dbg_ctx, "request_irq failed.\n"); 1426 qedi_sync_free_irqs(qedi); 1427 return rc; 1428 } 1429 qedi->int_info.used_cnt++; 1430 rc = irq_set_affinity_hint(qedi->int_info.msix[idx].vector, 1431 get_cpu_mask(cpu)); 1432 cpu = cpumask_next(cpu, cpu_online_mask); 1433 } 1434 1435 return 0; 1436} 1437 1438static int qedi_setup_int(struct qedi_ctx *qedi) 1439{ 1440 int rc = 0; 1441 1442 rc = qedi_ops->common->set_fp_int(qedi->cdev, qedi->num_queues); 1443 if (rc < 0) 1444 goto exit_setup_int; 1445 1446 qedi->msix_count = rc; 1447 1448 rc = qedi_ops->common->get_fp_int(qedi->cdev, &qedi->int_info); 1449 if (rc) 1450 goto exit_setup_int; 1451 1452 QEDI_INFO(&qedi->dbg_ctx, QEDI_LOG_DISC, 1453 "Number of msix_cnt = 0x%x num of cpus = 0x%x\n", 1454 qedi->int_info.msix_cnt, num_online_cpus()); 1455 1456 if (qedi->int_info.msix_cnt) { 1457 rc = qedi_request_msix_irq(qedi); 1458 goto exit_setup_int; 1459 } else { 1460 qedi_ops->common->simd_handler_config(qedi->cdev, &qedi, 1461 QEDI_SIMD_HANDLER_NUM, 1462 qedi_simd_int_handler); 1463 qedi->int_info.used_cnt = 1; 1464 } 1465 1466exit_setup_int: 1467 return rc; 1468} 1469 1470static void qedi_free_nvm_iscsi_cfg(struct qedi_ctx *qedi) 1471{ 1472 if (qedi->iscsi_image) 1473 dma_free_coherent(&qedi->pdev->dev, 1474 sizeof(struct qedi_nvm_iscsi_image), 1475 qedi->iscsi_image, qedi->nvm_buf_dma); 1476} 1477 1478static int qedi_alloc_nvm_iscsi_cfg(struct qedi_ctx *qedi) 1479{ 1480 qedi->iscsi_image = dma_alloc_coherent(&qedi->pdev->dev, 1481 sizeof(struct qedi_nvm_iscsi_image), 1482 &qedi->nvm_buf_dma, GFP_KERNEL); 1483 if (!qedi->iscsi_image) { 1484 QEDI_ERR(&qedi->dbg_ctx, "Could not allocate NVM BUF.\n"); 1485 return -ENOMEM; 1486 } 1487 QEDI_INFO(&qedi->dbg_ctx, QEDI_LOG_INFO, 1488 "NVM BUF addr=0x%p dma=0x%llx.\n", qedi->iscsi_image, 1489 qedi->nvm_buf_dma); 1490 1491 return 0; 1492} 1493 1494static void qedi_free_bdq(struct qedi_ctx *qedi) 1495{ 1496 int i; 1497 1498 if (qedi->bdq_pbl_list) 1499 dma_free_coherent(&qedi->pdev->dev, QEDI_PAGE_SIZE, 1500 qedi->bdq_pbl_list, qedi->bdq_pbl_list_dma); 1501 1502 if (qedi->bdq_pbl) 1503 dma_free_coherent(&qedi->pdev->dev, qedi->bdq_pbl_mem_size, 1504 qedi->bdq_pbl, qedi->bdq_pbl_dma); 1505 1506 for (i = 0; i < QEDI_BDQ_NUM; i++) { 1507 if (qedi->bdq[i].buf_addr) { 1508 dma_free_coherent(&qedi->pdev->dev, QEDI_BDQ_BUF_SIZE, 1509 qedi->bdq[i].buf_addr, 1510 qedi->bdq[i].buf_dma); 1511 } 1512 } 1513} 1514 1515static void qedi_free_global_queues(struct qedi_ctx *qedi) 1516{ 1517 int i; 1518 struct global_queue **gl = qedi->global_queues; 1519 1520 for (i = 0; i < qedi->num_queues; i++) { 1521 if (!gl[i]) 1522 continue; 1523 1524 if (gl[i]->cq) 1525 dma_free_coherent(&qedi->pdev->dev, gl[i]->cq_mem_size, 1526 gl[i]->cq, gl[i]->cq_dma); 1527 if (gl[i]->cq_pbl) 1528 dma_free_coherent(&qedi->pdev->dev, gl[i]->cq_pbl_size, 1529 gl[i]->cq_pbl, gl[i]->cq_pbl_dma); 1530 1531 kfree(gl[i]); 1532 } 1533 qedi_free_bdq(qedi); 1534 qedi_free_nvm_iscsi_cfg(qedi); 1535} 1536 1537static int qedi_alloc_bdq(struct qedi_ctx *qedi) 1538{ 1539 int i; 1540 struct scsi_bd *pbl; 1541 u64 *list; 1542 1543 /* Alloc dma memory for BDQ buffers */ 1544 for (i = 0; i < QEDI_BDQ_NUM; i++) { 1545 qedi->bdq[i].buf_addr = 1546 dma_alloc_coherent(&qedi->pdev->dev, 1547 QEDI_BDQ_BUF_SIZE, 1548 &qedi->bdq[i].buf_dma, 1549 GFP_KERNEL); 1550 if (!qedi->bdq[i].buf_addr) { 1551 QEDI_ERR(&qedi->dbg_ctx, 1552 "Could not allocate BDQ buffer %d.\n", i); 1553 return -ENOMEM; 1554 } 1555 } 1556 1557 /* Alloc dma memory for BDQ page buffer list */ 1558 qedi->bdq_pbl_mem_size = QEDI_BDQ_NUM * sizeof(struct scsi_bd); 1559 qedi->bdq_pbl_mem_size = ALIGN(qedi->bdq_pbl_mem_size, QEDI_PAGE_SIZE); 1560 qedi->rq_num_entries = qedi->bdq_pbl_mem_size / sizeof(struct scsi_bd); 1561 1562 QEDI_INFO(&qedi->dbg_ctx, QEDI_LOG_CONN, "rq_num_entries = %d.\n", 1563 qedi->rq_num_entries); 1564 1565 qedi->bdq_pbl = dma_alloc_coherent(&qedi->pdev->dev, 1566 qedi->bdq_pbl_mem_size, 1567 &qedi->bdq_pbl_dma, GFP_KERNEL); 1568 if (!qedi->bdq_pbl) { 1569 QEDI_ERR(&qedi->dbg_ctx, "Could not allocate BDQ PBL.\n"); 1570 return -ENOMEM; 1571 } 1572 1573 /* 1574 * Populate BDQ PBL with physical and virtual address of individual 1575 * BDQ buffers 1576 */ 1577 pbl = (struct scsi_bd *)qedi->bdq_pbl; 1578 for (i = 0; i < QEDI_BDQ_NUM; i++) { 1579 pbl->address.hi = 1580 cpu_to_le32(QEDI_U64_HI(qedi->bdq[i].buf_dma)); 1581 pbl->address.lo = 1582 cpu_to_le32(QEDI_U64_LO(qedi->bdq[i].buf_dma)); 1583 QEDI_INFO(&qedi->dbg_ctx, QEDI_LOG_CONN, 1584 "pbl [0x%p] pbl->address hi [0x%llx] lo [0x%llx], idx [%d]\n", 1585 pbl, pbl->address.hi, pbl->address.lo, i); 1586 pbl->opaque.iscsi_opaque.reserved_zero[0] = 0; 1587 pbl->opaque.iscsi_opaque.reserved_zero[1] = 0; 1588 pbl->opaque.iscsi_opaque.reserved_zero[2] = 0; 1589 pbl->opaque.iscsi_opaque.opaque = cpu_to_le16(i); 1590 pbl++; 1591 } 1592 1593 /* Allocate list of PBL pages */ 1594 qedi->bdq_pbl_list = dma_alloc_coherent(&qedi->pdev->dev, 1595 QEDI_PAGE_SIZE, 1596 &qedi->bdq_pbl_list_dma, 1597 GFP_KERNEL); 1598 if (!qedi->bdq_pbl_list) { 1599 QEDI_ERR(&qedi->dbg_ctx, 1600 "Could not allocate list of PBL pages.\n"); 1601 return -ENOMEM; 1602 } 1603 1604 /* 1605 * Now populate PBL list with pages that contain pointers to the 1606 * individual buffers. 1607 */ 1608 qedi->bdq_pbl_list_num_entries = qedi->bdq_pbl_mem_size / 1609 QEDI_PAGE_SIZE; 1610 list = (u64 *)qedi->bdq_pbl_list; 1611 for (i = 0; i < qedi->bdq_pbl_list_num_entries; i++) { 1612 *list = qedi->bdq_pbl_dma; 1613 list++; 1614 } 1615 1616 return 0; 1617} 1618 1619static int qedi_alloc_global_queues(struct qedi_ctx *qedi) 1620{ 1621 u32 *list; 1622 int i; 1623 int status; 1624 u32 *pbl; 1625 dma_addr_t page; 1626 int num_pages; 1627 1628 /* 1629 * Number of global queues (CQ / RQ). This should 1630 * be <= number of available MSIX vectors for the PF 1631 */ 1632 if (!qedi->num_queues) { 1633 QEDI_ERR(&qedi->dbg_ctx, "No MSI-X vectors available!\n"); 1634 return -ENOMEM; 1635 } 1636 1637 /* Make sure we allocated the PBL that will contain the physical 1638 * addresses of our queues 1639 */ 1640 if (!qedi->p_cpuq) { 1641 status = -EINVAL; 1642 goto mem_alloc_failure; 1643 } 1644 1645 qedi->global_queues = kzalloc((sizeof(struct global_queue *) * 1646 qedi->num_queues), GFP_KERNEL); 1647 if (!qedi->global_queues) { 1648 QEDI_ERR(&qedi->dbg_ctx, 1649 "Unable to allocate global queues array ptr memory\n"); 1650 return -ENOMEM; 1651 } 1652 QEDI_INFO(&qedi->dbg_ctx, QEDI_LOG_DISC, 1653 "qedi->global_queues=%p.\n", qedi->global_queues); 1654 1655 /* Allocate DMA coherent buffers for BDQ */ 1656 status = qedi_alloc_bdq(qedi); 1657 if (status) 1658 goto mem_alloc_failure; 1659 1660 /* Allocate DMA coherent buffers for NVM_ISCSI_CFG */ 1661 status = qedi_alloc_nvm_iscsi_cfg(qedi); 1662 if (status) 1663 goto mem_alloc_failure; 1664 1665 /* Allocate a CQ and an associated PBL for each MSI-X 1666 * vector. 1667 */ 1668 for (i = 0; i < qedi->num_queues; i++) { 1669 qedi->global_queues[i] = 1670 kzalloc(sizeof(*qedi->global_queues[0]), 1671 GFP_KERNEL); 1672 if (!qedi->global_queues[i]) { 1673 QEDI_ERR(&qedi->dbg_ctx, 1674 "Unable to allocation global queue %d.\n", i); 1675 status = -ENOMEM; 1676 goto mem_alloc_failure; 1677 } 1678 1679 qedi->global_queues[i]->cq_mem_size = 1680 (QEDI_CQ_SIZE + 8) * sizeof(union iscsi_cqe); 1681 qedi->global_queues[i]->cq_mem_size = 1682 (qedi->global_queues[i]->cq_mem_size + 1683 (QEDI_PAGE_SIZE - 1)); 1684 1685 qedi->global_queues[i]->cq_pbl_size = 1686 (qedi->global_queues[i]->cq_mem_size / 1687 QEDI_PAGE_SIZE) * sizeof(void *); 1688 qedi->global_queues[i]->cq_pbl_size = 1689 (qedi->global_queues[i]->cq_pbl_size + 1690 (QEDI_PAGE_SIZE - 1)); 1691 1692 qedi->global_queues[i]->cq = dma_alloc_coherent(&qedi->pdev->dev, 1693 qedi->global_queues[i]->cq_mem_size, 1694 &qedi->global_queues[i]->cq_dma, 1695 GFP_KERNEL); 1696 1697 if (!qedi->global_queues[i]->cq) { 1698 QEDI_WARN(&qedi->dbg_ctx, 1699 "Could not allocate cq.\n"); 1700 status = -ENOMEM; 1701 goto mem_alloc_failure; 1702 } 1703 qedi->global_queues[i]->cq_pbl = dma_alloc_coherent(&qedi->pdev->dev, 1704 qedi->global_queues[i]->cq_pbl_size, 1705 &qedi->global_queues[i]->cq_pbl_dma, 1706 GFP_KERNEL); 1707 1708 if (!qedi->global_queues[i]->cq_pbl) { 1709 QEDI_WARN(&qedi->dbg_ctx, 1710 "Could not allocate cq PBL.\n"); 1711 status = -ENOMEM; 1712 goto mem_alloc_failure; 1713 } 1714 1715 /* Create PBL */ 1716 num_pages = qedi->global_queues[i]->cq_mem_size / 1717 QEDI_PAGE_SIZE; 1718 page = qedi->global_queues[i]->cq_dma; 1719 pbl = (u32 *)qedi->global_queues[i]->cq_pbl; 1720 1721 while (num_pages--) { 1722 *pbl = (u32)page; 1723 pbl++; 1724 *pbl = (u32)((u64)page >> 32); 1725 pbl++; 1726 page += QEDI_PAGE_SIZE; 1727 } 1728 } 1729 1730 list = (u32 *)qedi->p_cpuq; 1731 1732 /* 1733 * The list is built as follows: CQ#0 PBL pointer, RQ#0 PBL pointer, 1734 * CQ#1 PBL pointer, RQ#1 PBL pointer, etc. Each PBL pointer points 1735 * to the physical address which contains an array of pointers to the 1736 * physical addresses of the specific queue pages. 1737 */ 1738 for (i = 0; i < qedi->num_queues; i++) { 1739 *list = (u32)qedi->global_queues[i]->cq_pbl_dma; 1740 list++; 1741 *list = (u32)((u64)qedi->global_queues[i]->cq_pbl_dma >> 32); 1742 list++; 1743 1744 *list = (u32)0; 1745 list++; 1746 *list = (u32)((u64)0 >> 32); 1747 list++; 1748 } 1749 1750 return 0; 1751 1752mem_alloc_failure: 1753 qedi_free_global_queues(qedi); 1754 return status; 1755} 1756 1757int qedi_alloc_sq(struct qedi_ctx *qedi, struct qedi_endpoint *ep) 1758{ 1759 int rval = 0; 1760 u32 *pbl; 1761 dma_addr_t page; 1762 int num_pages; 1763 1764 if (!ep) 1765 return -EIO; 1766 1767 /* Calculate appropriate queue and PBL sizes */ 1768 ep->sq_mem_size = QEDI_SQ_SIZE * sizeof(struct iscsi_wqe); 1769 ep->sq_mem_size += QEDI_PAGE_SIZE - 1; 1770 1771 ep->sq_pbl_size = (ep->sq_mem_size / QEDI_PAGE_SIZE) * sizeof(void *); 1772 ep->sq_pbl_size = ep->sq_pbl_size + QEDI_PAGE_SIZE; 1773 1774 ep->sq = dma_alloc_coherent(&qedi->pdev->dev, ep->sq_mem_size, 1775 &ep->sq_dma, GFP_KERNEL); 1776 if (!ep->sq) { 1777 QEDI_WARN(&qedi->dbg_ctx, 1778 "Could not allocate send queue.\n"); 1779 rval = -ENOMEM; 1780 goto out; 1781 } 1782 ep->sq_pbl = dma_alloc_coherent(&qedi->pdev->dev, ep->sq_pbl_size, 1783 &ep->sq_pbl_dma, GFP_KERNEL); 1784 if (!ep->sq_pbl) { 1785 QEDI_WARN(&qedi->dbg_ctx, 1786 "Could not allocate send queue PBL.\n"); 1787 rval = -ENOMEM; 1788 goto out_free_sq; 1789 } 1790 1791 /* Create PBL */ 1792 num_pages = ep->sq_mem_size / QEDI_PAGE_SIZE; 1793 page = ep->sq_dma; 1794 pbl = (u32 *)ep->sq_pbl; 1795 1796 while (num_pages--) { 1797 *pbl = (u32)page; 1798 pbl++; 1799 *pbl = (u32)((u64)page >> 32); 1800 pbl++; 1801 page += QEDI_PAGE_SIZE; 1802 } 1803 1804 return rval; 1805 1806out_free_sq: 1807 dma_free_coherent(&qedi->pdev->dev, ep->sq_mem_size, ep->sq, 1808 ep->sq_dma); 1809out: 1810 return rval; 1811} 1812 1813void qedi_free_sq(struct qedi_ctx *qedi, struct qedi_endpoint *ep) 1814{ 1815 if (ep->sq_pbl) 1816 dma_free_coherent(&qedi->pdev->dev, ep->sq_pbl_size, ep->sq_pbl, 1817 ep->sq_pbl_dma); 1818 if (ep->sq) 1819 dma_free_coherent(&qedi->pdev->dev, ep->sq_mem_size, ep->sq, 1820 ep->sq_dma); 1821} 1822 1823int qedi_get_task_idx(struct qedi_ctx *qedi) 1824{ 1825 s16 tmp_idx; 1826 1827again: 1828 tmp_idx = find_first_zero_bit(qedi->task_idx_map, 1829 MAX_ISCSI_TASK_ENTRIES); 1830 1831 if (tmp_idx >= MAX_ISCSI_TASK_ENTRIES) { 1832 QEDI_ERR(&qedi->dbg_ctx, "FW task context pool is full.\n"); 1833 tmp_idx = -1; 1834 goto err_idx; 1835 } 1836 1837 if (test_and_set_bit(tmp_idx, qedi->task_idx_map)) 1838 goto again; 1839 1840err_idx: 1841 return tmp_idx; 1842} 1843 1844void qedi_clear_task_idx(struct qedi_ctx *qedi, int idx) 1845{ 1846 if (!test_and_clear_bit(idx, qedi->task_idx_map)) 1847 QEDI_ERR(&qedi->dbg_ctx, 1848 "FW task context, already cleared, tid=0x%x\n", idx); 1849} 1850 1851void qedi_update_itt_map(struct qedi_ctx *qedi, u32 tid, u32 proto_itt, 1852 struct qedi_cmd *cmd) 1853{ 1854 qedi->itt_map[tid].itt = proto_itt; 1855 qedi->itt_map[tid].p_cmd = cmd; 1856 1857 QEDI_INFO(&qedi->dbg_ctx, QEDI_LOG_CONN, 1858 "update itt map tid=0x%x, with proto itt=0x%x\n", tid, 1859 qedi->itt_map[tid].itt); 1860} 1861 1862void qedi_get_task_tid(struct qedi_ctx *qedi, u32 itt, s16 *tid) 1863{ 1864 u16 i; 1865 1866 for (i = 0; i < MAX_ISCSI_TASK_ENTRIES; i++) { 1867 if (qedi->itt_map[i].itt == itt) { 1868 *tid = i; 1869 QEDI_INFO(&qedi->dbg_ctx, QEDI_LOG_CONN, 1870 "Ref itt=0x%x, found at tid=0x%x\n", 1871 itt, *tid); 1872 return; 1873 } 1874 } 1875 1876 WARN_ON(1); 1877} 1878 1879void qedi_get_proto_itt(struct qedi_ctx *qedi, u32 tid, u32 *proto_itt) 1880{ 1881 *proto_itt = qedi->itt_map[tid].itt; 1882 QEDI_INFO(&qedi->dbg_ctx, QEDI_LOG_CONN, 1883 "Get itt map tid [0x%x with proto itt[0x%x]", 1884 tid, *proto_itt); 1885} 1886 1887struct qedi_cmd *qedi_get_cmd_from_tid(struct qedi_ctx *qedi, u32 tid) 1888{ 1889 struct qedi_cmd *cmd = NULL; 1890 1891 if (tid >= MAX_ISCSI_TASK_ENTRIES) 1892 return NULL; 1893 1894 cmd = qedi->itt_map[tid].p_cmd; 1895 if (cmd->task_id != tid) 1896 return NULL; 1897 1898 qedi->itt_map[tid].p_cmd = NULL; 1899 1900 return cmd; 1901} 1902 1903static int qedi_alloc_itt(struct qedi_ctx *qedi) 1904{ 1905 qedi->itt_map = kcalloc(MAX_ISCSI_TASK_ENTRIES, 1906 sizeof(struct qedi_itt_map), GFP_KERNEL); 1907 if (!qedi->itt_map) { 1908 QEDI_ERR(&qedi->dbg_ctx, 1909 "Unable to allocate itt map array memory\n"); 1910 return -ENOMEM; 1911 } 1912 return 0; 1913} 1914 1915static void qedi_free_itt(struct qedi_ctx *qedi) 1916{ 1917 kfree(qedi->itt_map); 1918} 1919 1920static struct qed_ll2_cb_ops qedi_ll2_cb_ops = { 1921 .rx_cb = qedi_ll2_rx, 1922 .tx_cb = NULL, 1923}; 1924 1925static int qedi_percpu_io_thread(void *arg) 1926{ 1927 struct qedi_percpu_s *p = arg; 1928 struct qedi_work *work, *tmp; 1929 unsigned long flags; 1930 LIST_HEAD(work_list); 1931 1932 set_user_nice(current, -20); 1933 1934 while (!kthread_should_stop()) { 1935 spin_lock_irqsave(&p->p_work_lock, flags); 1936 while (!list_empty(&p->work_list)) { 1937 list_splice_init(&p->work_list, &work_list); 1938 spin_unlock_irqrestore(&p->p_work_lock, flags); 1939 1940 list_for_each_entry_safe(work, tmp, &work_list, list) { 1941 list_del_init(&work->list); 1942 qedi_fp_process_cqes(work); 1943 if (!work->is_solicited) 1944 kfree(work); 1945 } 1946 cond_resched(); 1947 spin_lock_irqsave(&p->p_work_lock, flags); 1948 } 1949 set_current_state(TASK_INTERRUPTIBLE); 1950 spin_unlock_irqrestore(&p->p_work_lock, flags); 1951 schedule(); 1952 } 1953 __set_current_state(TASK_RUNNING); 1954 1955 return 0; 1956} 1957 1958static int qedi_cpu_online(unsigned int cpu) 1959{ 1960 struct qedi_percpu_s *p = this_cpu_ptr(&qedi_percpu); 1961 struct task_struct *thread; 1962 1963 thread = kthread_create_on_node(qedi_percpu_io_thread, (void *)p, 1964 cpu_to_node(cpu), 1965 "qedi_thread/%d", cpu); 1966 if (IS_ERR(thread)) 1967 return PTR_ERR(thread); 1968 1969 kthread_bind(thread, cpu); 1970 p->iothread = thread; 1971 wake_up_process(thread); 1972 return 0; 1973} 1974 1975static int qedi_cpu_offline(unsigned int cpu) 1976{ 1977 struct qedi_percpu_s *p = this_cpu_ptr(&qedi_percpu); 1978 struct qedi_work *work, *tmp; 1979 struct task_struct *thread; 1980 unsigned long flags; 1981 1982 spin_lock_irqsave(&p->p_work_lock, flags); 1983 thread = p->iothread; 1984 p->iothread = NULL; 1985 1986 list_for_each_entry_safe(work, tmp, &p->work_list, list) { 1987 list_del_init(&work->list); 1988 qedi_fp_process_cqes(work); 1989 if (!work->is_solicited) 1990 kfree(work); 1991 } 1992 1993 spin_unlock_irqrestore(&p->p_work_lock, flags); 1994 if (thread) 1995 kthread_stop(thread); 1996 return 0; 1997} 1998 1999void qedi_reset_host_mtu(struct qedi_ctx *qedi, u16 mtu) 2000{ 2001 struct qed_ll2_params params; 2002 2003 qedi_recover_all_conns(qedi); 2004 2005 qedi_ops->ll2->stop(qedi->cdev); 2006 qedi_ll2_free_skbs(qedi); 2007 2008 QEDI_INFO(&qedi->dbg_ctx, QEDI_LOG_INFO, "old MTU %u, new MTU %u\n", 2009 qedi->ll2_mtu, mtu); 2010 memset(¶ms, 0, sizeof(params)); 2011 qedi->ll2_mtu = mtu; 2012 params.mtu = qedi->ll2_mtu + IPV6_HDR_LEN + TCP_HDR_LEN; 2013 params.drop_ttl0_packets = 0; 2014 params.rx_vlan_stripping = 1; 2015 ether_addr_copy(params.ll2_mac_address, qedi->dev_info.common.hw_mac); 2016 qedi_ops->ll2->start(qedi->cdev, ¶ms); 2017} 2018 2019/* 2020 * qedi_get_nvram_block: - Scan through the iSCSI NVRAM block (while accounting 2021 * for gaps) for the matching absolute-pf-id of the QEDI device. 2022 */ 2023static struct nvm_iscsi_block * 2024qedi_get_nvram_block(struct qedi_ctx *qedi) 2025{ 2026 int i; 2027 u8 pf; 2028 u32 flags; 2029 struct nvm_iscsi_block *block; 2030 2031 pf = qedi->dev_info.common.abs_pf_id; 2032 block = &qedi->iscsi_image->iscsi_cfg.block[0]; 2033 for (i = 0; i < NUM_OF_ISCSI_PF_SUPPORTED; i++, block++) { 2034 flags = ((block->id) & NVM_ISCSI_CFG_BLK_CTRL_FLAG_MASK) >> 2035 NVM_ISCSI_CFG_BLK_CTRL_FLAG_OFFSET; 2036 if (flags & (NVM_ISCSI_CFG_BLK_CTRL_FLAG_IS_NOT_EMPTY | 2037 NVM_ISCSI_CFG_BLK_CTRL_FLAG_PF_MAPPED) && 2038 (pf == (block->id & NVM_ISCSI_CFG_BLK_MAPPED_PF_ID_MASK) 2039 >> NVM_ISCSI_CFG_BLK_MAPPED_PF_ID_OFFSET)) 2040 return block; 2041 } 2042 return NULL; 2043} 2044 2045static ssize_t qedi_show_boot_eth_info(void *data, int type, char *buf) 2046{ 2047 struct qedi_ctx *qedi = data; 2048 struct nvm_iscsi_initiator *initiator; 2049 int rc = 1; 2050 u32 ipv6_en, dhcp_en, ip_len; 2051 struct nvm_iscsi_block *block; 2052 char *fmt, *ip, *sub, *gw; 2053 2054 block = qedi_get_nvram_block(qedi); 2055 if (!block) 2056 return 0; 2057 2058 initiator = &block->initiator; 2059 ipv6_en = block->generic.ctrl_flags & 2060 NVM_ISCSI_CFG_GEN_IPV6_ENABLED; 2061 dhcp_en = block->generic.ctrl_flags & 2062 NVM_ISCSI_CFG_GEN_DHCP_TCPIP_CONFIG_ENABLED; 2063 /* Static IP assignments. */ 2064 fmt = ipv6_en ? "%pI6\n" : "%pI4\n"; 2065 ip = ipv6_en ? initiator->ipv6.addr.byte : initiator->ipv4.addr.byte; 2066 ip_len = ipv6_en ? IPV6_LEN : IPV4_LEN; 2067 sub = ipv6_en ? initiator->ipv6.subnet_mask.byte : 2068 initiator->ipv4.subnet_mask.byte; 2069 gw = ipv6_en ? initiator->ipv6.gateway.byte : 2070 initiator->ipv4.gateway.byte; 2071 /* DHCP IP adjustments. */ 2072 fmt = dhcp_en ? "%s\n" : fmt; 2073 if (dhcp_en) { 2074 ip = ipv6_en ? "0::0" : "0.0.0.0"; 2075 sub = ip; 2076 gw = ip; 2077 ip_len = ipv6_en ? 5 : 8; 2078 } 2079 2080 switch (type) { 2081 case ISCSI_BOOT_ETH_IP_ADDR: 2082 rc = snprintf(buf, ip_len, fmt, ip); 2083 break; 2084 case ISCSI_BOOT_ETH_SUBNET_MASK: 2085 rc = snprintf(buf, ip_len, fmt, sub); 2086 break; 2087 case ISCSI_BOOT_ETH_GATEWAY: 2088 rc = snprintf(buf, ip_len, fmt, gw); 2089 break; 2090 case ISCSI_BOOT_ETH_FLAGS: 2091 rc = snprintf(buf, 3, "%d\n", (char)SYSFS_FLAG_FW_SEL_BOOT); 2092 break; 2093 case ISCSI_BOOT_ETH_INDEX: 2094 rc = snprintf(buf, 3, "0\n"); 2095 break; 2096 case ISCSI_BOOT_ETH_MAC: 2097 rc = sysfs_format_mac(buf, qedi->mac, ETH_ALEN); 2098 break; 2099 case ISCSI_BOOT_ETH_VLAN: 2100 rc = snprintf(buf, 12, "%d\n", 2101 GET_FIELD2(initiator->generic_cont0, 2102 NVM_ISCSI_CFG_INITIATOR_VLAN)); 2103 break; 2104 case ISCSI_BOOT_ETH_ORIGIN: 2105 if (dhcp_en) 2106 rc = snprintf(buf, 3, "3\n"); 2107 break; 2108 default: 2109 rc = 0; 2110 break; 2111 } 2112 2113 return rc; 2114} 2115 2116static umode_t qedi_eth_get_attr_visibility(void *data, int type) 2117{ 2118 int rc = 1; 2119 2120 switch (type) { 2121 case ISCSI_BOOT_ETH_FLAGS: 2122 case ISCSI_BOOT_ETH_MAC: 2123 case ISCSI_BOOT_ETH_INDEX: 2124 case ISCSI_BOOT_ETH_IP_ADDR: 2125 case ISCSI_BOOT_ETH_SUBNET_MASK: 2126 case ISCSI_BOOT_ETH_GATEWAY: 2127 case ISCSI_BOOT_ETH_ORIGIN: 2128 case ISCSI_BOOT_ETH_VLAN: 2129 rc = 0444; 2130 break; 2131 default: 2132 rc = 0; 2133 break; 2134 } 2135 return rc; 2136} 2137 2138static ssize_t qedi_show_boot_ini_info(void *data, int type, char *buf) 2139{ 2140 struct qedi_ctx *qedi = data; 2141 struct nvm_iscsi_initiator *initiator; 2142 int rc; 2143 struct nvm_iscsi_block *block; 2144 2145 block = qedi_get_nvram_block(qedi); 2146 if (!block) 2147 return 0; 2148 2149 initiator = &block->initiator; 2150 2151 switch (type) { 2152 case ISCSI_BOOT_INI_INITIATOR_NAME: 2153 rc = sprintf(buf, "%.*s\n", NVM_ISCSI_CFG_ISCSI_NAME_MAX_LEN, 2154 initiator->initiator_name.byte); 2155 break; 2156 default: 2157 rc = 0; 2158 break; 2159 } 2160 return rc; 2161} 2162 2163static umode_t qedi_ini_get_attr_visibility(void *data, int type) 2164{ 2165 int rc; 2166 2167 switch (type) { 2168 case ISCSI_BOOT_INI_INITIATOR_NAME: 2169 rc = 0444; 2170 break; 2171 default: 2172 rc = 0; 2173 break; 2174 } 2175 return rc; 2176} 2177 2178static ssize_t 2179qedi_show_boot_tgt_info(struct qedi_ctx *qedi, int type, 2180 char *buf, enum qedi_nvm_tgts idx) 2181{ 2182 int rc = 1; 2183 u32 ctrl_flags, ipv6_en, chap_en, mchap_en, ip_len; 2184 struct nvm_iscsi_block *block; 2185 char *chap_name, *chap_secret; 2186 char *mchap_name, *mchap_secret; 2187 2188 block = qedi_get_nvram_block(qedi); 2189 if (!block) 2190 goto exit_show_tgt_info; 2191 2192 QEDI_INFO(&qedi->dbg_ctx, QEDI_LOG_EVT, 2193 "Port:%d, tgt_idx:%d\n", 2194 GET_FIELD2(block->id, NVM_ISCSI_CFG_BLK_MAPPED_PF_ID), idx); 2195 2196 ctrl_flags = block->target[idx].ctrl_flags & 2197 NVM_ISCSI_CFG_TARGET_ENABLED; 2198 2199 if (!ctrl_flags) { 2200 QEDI_INFO(&qedi->dbg_ctx, QEDI_LOG_EVT, 2201 "Target disabled\n"); 2202 goto exit_show_tgt_info; 2203 } 2204 2205 ipv6_en = block->generic.ctrl_flags & 2206 NVM_ISCSI_CFG_GEN_IPV6_ENABLED; 2207 ip_len = ipv6_en ? IPV6_LEN : IPV4_LEN; 2208 chap_en = block->generic.ctrl_flags & 2209 NVM_ISCSI_CFG_GEN_CHAP_ENABLED; 2210 chap_name = chap_en ? block->initiator.chap_name.byte : NULL; 2211 chap_secret = chap_en ? block->initiator.chap_password.byte : NULL; 2212 2213 mchap_en = block->generic.ctrl_flags & 2214 NVM_ISCSI_CFG_GEN_CHAP_MUTUAL_ENABLED; 2215 mchap_name = mchap_en ? block->target[idx].chap_name.byte : NULL; 2216 mchap_secret = mchap_en ? block->target[idx].chap_password.byte : NULL; 2217 2218 switch (type) { 2219 case ISCSI_BOOT_TGT_NAME: 2220 rc = sprintf(buf, "%.*s\n", NVM_ISCSI_CFG_ISCSI_NAME_MAX_LEN, 2221 block->target[idx].target_name.byte); 2222 break; 2223 case ISCSI_BOOT_TGT_IP_ADDR: 2224 if (ipv6_en) 2225 rc = snprintf(buf, ip_len, "%pI6\n", 2226 block->target[idx].ipv6_addr.byte); 2227 else 2228 rc = snprintf(buf, ip_len, "%pI4\n", 2229 block->target[idx].ipv4_addr.byte); 2230 break; 2231 case ISCSI_BOOT_TGT_PORT: 2232 rc = snprintf(buf, 12, "%d\n", 2233 GET_FIELD2(block->target[idx].generic_cont0, 2234 NVM_ISCSI_CFG_TARGET_TCP_PORT)); 2235 break; 2236 case ISCSI_BOOT_TGT_LUN: 2237 rc = snprintf(buf, 22, "%.*d\n", 2238 block->target[idx].lun.value[1], 2239 block->target[idx].lun.value[0]); 2240 break; 2241 case ISCSI_BOOT_TGT_CHAP_NAME: 2242 rc = sprintf(buf, "%.*s\n", NVM_ISCSI_CFG_CHAP_NAME_MAX_LEN, 2243 chap_name); 2244 break; 2245 case ISCSI_BOOT_TGT_CHAP_SECRET: 2246 rc = sprintf(buf, "%.*s\n", NVM_ISCSI_CFG_CHAP_PWD_MAX_LEN, 2247 chap_secret); 2248 break; 2249 case ISCSI_BOOT_TGT_REV_CHAP_NAME: 2250 rc = sprintf(buf, "%.*s\n", NVM_ISCSI_CFG_CHAP_NAME_MAX_LEN, 2251 mchap_name); 2252 break; 2253 case ISCSI_BOOT_TGT_REV_CHAP_SECRET: 2254 rc = sprintf(buf, "%.*s\n", NVM_ISCSI_CFG_CHAP_PWD_MAX_LEN, 2255 mchap_secret); 2256 break; 2257 case ISCSI_BOOT_TGT_FLAGS: 2258 rc = snprintf(buf, 3, "%d\n", (char)SYSFS_FLAG_FW_SEL_BOOT); 2259 break; 2260 case ISCSI_BOOT_TGT_NIC_ASSOC: 2261 rc = snprintf(buf, 3, "0\n"); 2262 break; 2263 default: 2264 rc = 0; 2265 break; 2266 } 2267 2268exit_show_tgt_info: 2269 return rc; 2270} 2271 2272static ssize_t qedi_show_boot_tgt_pri_info(void *data, int type, char *buf) 2273{ 2274 struct qedi_ctx *qedi = data; 2275 2276 return qedi_show_boot_tgt_info(qedi, type, buf, QEDI_NVM_TGT_PRI); 2277} 2278 2279static ssize_t qedi_show_boot_tgt_sec_info(void *data, int type, char *buf) 2280{ 2281 struct qedi_ctx *qedi = data; 2282 2283 return qedi_show_boot_tgt_info(qedi, type, buf, QEDI_NVM_TGT_SEC); 2284} 2285 2286static umode_t qedi_tgt_get_attr_visibility(void *data, int type) 2287{ 2288 int rc; 2289 2290 switch (type) { 2291 case ISCSI_BOOT_TGT_NAME: 2292 case ISCSI_BOOT_TGT_IP_ADDR: 2293 case ISCSI_BOOT_TGT_PORT: 2294 case ISCSI_BOOT_TGT_LUN: 2295 case ISCSI_BOOT_TGT_CHAP_NAME: 2296 case ISCSI_BOOT_TGT_CHAP_SECRET: 2297 case ISCSI_BOOT_TGT_REV_CHAP_NAME: 2298 case ISCSI_BOOT_TGT_REV_CHAP_SECRET: 2299 case ISCSI_BOOT_TGT_NIC_ASSOC: 2300 case ISCSI_BOOT_TGT_FLAGS: 2301 rc = 0444; 2302 break; 2303 default: 2304 rc = 0; 2305 break; 2306 } 2307 return rc; 2308} 2309 2310static void qedi_boot_release(void *data) 2311{ 2312 struct qedi_ctx *qedi = data; 2313 2314 scsi_host_put(qedi->shost); 2315} 2316 2317static int qedi_get_boot_info(struct qedi_ctx *qedi) 2318{ 2319 int ret = 1; 2320 2321 QEDI_INFO(&qedi->dbg_ctx, QEDI_LOG_INFO, 2322 "Get NVM iSCSI CFG image\n"); 2323 ret = qedi_ops->common->nvm_get_image(qedi->cdev, 2324 QED_NVM_IMAGE_ISCSI_CFG, 2325 (char *)qedi->iscsi_image, 2326 sizeof(struct qedi_nvm_iscsi_image)); 2327 if (ret) 2328 QEDI_ERR(&qedi->dbg_ctx, 2329 "Could not get NVM image. ret = %d\n", ret); 2330 2331 return ret; 2332} 2333 2334static int qedi_setup_boot_info(struct qedi_ctx *qedi) 2335{ 2336 struct iscsi_boot_kobj *boot_kobj; 2337 2338 if (qedi_get_boot_info(qedi)) 2339 return -EPERM; 2340 2341 qedi->boot_kset = iscsi_boot_create_host_kset(qedi->shost->host_no); 2342 if (!qedi->boot_kset) 2343 goto kset_free; 2344 2345 if (!scsi_host_get(qedi->shost)) 2346 goto kset_free; 2347 2348 boot_kobj = iscsi_boot_create_target(qedi->boot_kset, 0, qedi, 2349 qedi_show_boot_tgt_pri_info, 2350 qedi_tgt_get_attr_visibility, 2351 qedi_boot_release); 2352 if (!boot_kobj) 2353 goto put_host; 2354 2355 if (!scsi_host_get(qedi->shost)) 2356 goto kset_free; 2357 2358 boot_kobj = iscsi_boot_create_target(qedi->boot_kset, 1, qedi, 2359 qedi_show_boot_tgt_sec_info, 2360 qedi_tgt_get_attr_visibility, 2361 qedi_boot_release); 2362 if (!boot_kobj) 2363 goto put_host; 2364 2365 if (!scsi_host_get(qedi->shost)) 2366 goto kset_free; 2367 2368 boot_kobj = iscsi_boot_create_initiator(qedi->boot_kset, 0, qedi, 2369 qedi_show_boot_ini_info, 2370 qedi_ini_get_attr_visibility, 2371 qedi_boot_release); 2372 if (!boot_kobj) 2373 goto put_host; 2374 2375 if (!scsi_host_get(qedi->shost)) 2376 goto kset_free; 2377 2378 boot_kobj = iscsi_boot_create_ethernet(qedi->boot_kset, 0, qedi, 2379 qedi_show_boot_eth_info, 2380 qedi_eth_get_attr_visibility, 2381 qedi_boot_release); 2382 if (!boot_kobj) 2383 goto put_host; 2384 2385 return 0; 2386 2387put_host: 2388 scsi_host_put(qedi->shost); 2389kset_free: 2390 iscsi_boot_destroy_kset(qedi->boot_kset); 2391 return -ENOMEM; 2392} 2393 2394static pci_ers_result_t qedi_io_error_detected(struct pci_dev *pdev, 2395 pci_channel_state_t state) 2396{ 2397 struct qedi_ctx *qedi = pci_get_drvdata(pdev); 2398 2399 QEDI_ERR(&qedi->dbg_ctx, "%s: PCI error detected [%d]\n", 2400 __func__, state); 2401 2402 if (test_and_set_bit(QEDI_IN_RECOVERY, &qedi->flags)) { 2403 QEDI_INFO(&qedi->dbg_ctx, QEDI_LOG_INFO, 2404 "Recovery already in progress.\n"); 2405 return PCI_ERS_RESULT_NONE; 2406 } 2407 2408 qedi_ops->common->recovery_process(qedi->cdev); 2409 2410 return PCI_ERS_RESULT_CAN_RECOVER; 2411} 2412 2413static void __qedi_remove(struct pci_dev *pdev, int mode) 2414{ 2415 struct qedi_ctx *qedi = pci_get_drvdata(pdev); 2416 int rval; 2417 u16 retry = 10; 2418 2419 if (mode == QEDI_MODE_NORMAL) 2420 iscsi_host_remove(qedi->shost, false); 2421 else if (mode == QEDI_MODE_SHUTDOWN) 2422 iscsi_host_remove(qedi->shost, true); 2423 2424 if (mode == QEDI_MODE_NORMAL || mode == QEDI_MODE_SHUTDOWN) { 2425 if (qedi->tmf_thread) { 2426 destroy_workqueue(qedi->tmf_thread); 2427 qedi->tmf_thread = NULL; 2428 } 2429 2430 if (qedi->offload_thread) { 2431 destroy_workqueue(qedi->offload_thread); 2432 qedi->offload_thread = NULL; 2433 } 2434 } 2435 2436#ifdef CONFIG_DEBUG_FS 2437 qedi_dbg_host_exit(&qedi->dbg_ctx); 2438#endif 2439 if (!test_bit(QEDI_IN_OFFLINE, &qedi->flags)) 2440 qedi_ops->common->set_power_state(qedi->cdev, PCI_D0); 2441 2442 qedi_sync_free_irqs(qedi); 2443 2444 if (!test_bit(QEDI_IN_OFFLINE, &qedi->flags)) { 2445 while (retry--) { 2446 rval = qedi_ops->stop(qedi->cdev); 2447 if (rval < 0) 2448 msleep(1000); 2449 else 2450 break; 2451 } 2452 qedi_ops->ll2->stop(qedi->cdev); 2453 } 2454 2455 cancel_delayed_work_sync(&qedi->recovery_work); 2456 cancel_delayed_work_sync(&qedi->board_disable_work); 2457 2458 qedi_free_iscsi_pf_param(qedi); 2459 2460 rval = qedi_ops->common->update_drv_state(qedi->cdev, false); 2461 if (rval) 2462 QEDI_ERR(&qedi->dbg_ctx, "Failed to send drv state to MFW\n"); 2463 2464 if (!test_bit(QEDI_IN_OFFLINE, &qedi->flags)) { 2465 qedi_ops->common->slowpath_stop(qedi->cdev); 2466 qedi_ops->common->remove(qedi->cdev); 2467 } 2468 2469 qedi_destroy_fp(qedi); 2470 2471 if (mode == QEDI_MODE_NORMAL || mode == QEDI_MODE_SHUTDOWN) { 2472 qedi_release_cid_que(qedi); 2473 qedi_cm_free_mem(qedi); 2474 qedi_free_uio(qedi->udev); 2475 qedi_free_itt(qedi); 2476 2477 if (qedi->ll2_recv_thread) { 2478 kthread_stop(qedi->ll2_recv_thread); 2479 qedi->ll2_recv_thread = NULL; 2480 } 2481 qedi_ll2_free_skbs(qedi); 2482 2483 if (qedi->boot_kset) 2484 iscsi_boot_destroy_kset(qedi->boot_kset); 2485 2486 iscsi_host_free(qedi->shost); 2487 } 2488} 2489 2490static void qedi_board_disable_work(struct work_struct *work) 2491{ 2492 struct qedi_ctx *qedi = 2493 container_of(work, struct qedi_ctx, 2494 board_disable_work.work); 2495 2496 QEDI_INFO(&qedi->dbg_ctx, QEDI_LOG_INFO, 2497 "Fan failure, Unloading firmware context.\n"); 2498 2499 if (test_and_set_bit(QEDI_IN_SHUTDOWN, &qedi->flags)) 2500 return; 2501 2502 __qedi_remove(qedi->pdev, QEDI_MODE_NORMAL); 2503} 2504 2505static void qedi_shutdown(struct pci_dev *pdev) 2506{ 2507 struct qedi_ctx *qedi = pci_get_drvdata(pdev); 2508 2509 QEDI_ERR(&qedi->dbg_ctx, "%s: Shutdown qedi\n", __func__); 2510 if (test_and_set_bit(QEDI_IN_SHUTDOWN, &qedi->flags)) 2511 return; 2512 __qedi_remove(pdev, QEDI_MODE_SHUTDOWN); 2513} 2514 2515static int qedi_suspend(struct pci_dev *pdev, pm_message_t state) 2516{ 2517 struct qedi_ctx *qedi; 2518 2519 if (!pdev) { 2520 QEDI_ERR(NULL, "pdev is NULL.\n"); 2521 return -ENODEV; 2522 } 2523 2524 qedi = pci_get_drvdata(pdev); 2525 2526 QEDI_ERR(&qedi->dbg_ctx, "%s: Device does not support suspend operation\n", __func__); 2527 2528 return -EPERM; 2529} 2530 2531static int __qedi_probe(struct pci_dev *pdev, int mode) 2532{ 2533 struct qedi_ctx *qedi; 2534 struct qed_ll2_params params; 2535 u8 dp_level = 0; 2536 bool is_vf = false; 2537 char host_buf[16]; 2538 struct qed_link_params link_params; 2539 struct qed_slowpath_params sp_params; 2540 struct qed_probe_params qed_params; 2541 void *task_start, *task_end; 2542 int rc; 2543 u16 retry = 10; 2544 2545 if (mode != QEDI_MODE_RECOVERY) { 2546 qedi = qedi_host_alloc(pdev); 2547 if (!qedi) { 2548 rc = -ENOMEM; 2549 goto exit_probe; 2550 } 2551 } else { 2552 qedi = pci_get_drvdata(pdev); 2553 } 2554 2555retry_probe: 2556 if (mode == QEDI_MODE_RECOVERY) 2557 msleep(2000); 2558 2559 memset(&qed_params, 0, sizeof(qed_params)); 2560 qed_params.protocol = QED_PROTOCOL_ISCSI; 2561 qed_params.dp_module = qedi_qed_debug; 2562 qed_params.dp_level = dp_level; 2563 qed_params.is_vf = is_vf; 2564 qedi->cdev = qedi_ops->common->probe(pdev, &qed_params); 2565 if (!qedi->cdev) { 2566 if (mode == QEDI_MODE_RECOVERY && retry) { 2567 QEDI_INFO(&qedi->dbg_ctx, QEDI_LOG_INFO, 2568 "Retry %d initialize hardware\n", retry); 2569 retry--; 2570 goto retry_probe; 2571 } 2572 2573 rc = -ENODEV; 2574 QEDI_ERR(&qedi->dbg_ctx, "Cannot initialize hardware\n"); 2575 goto free_host; 2576 } 2577 2578 set_bit(QEDI_ERR_ATTN_CLR_EN, &qedi->qedi_err_flags); 2579 set_bit(QEDI_ERR_IS_RECOVERABLE, &qedi->qedi_err_flags); 2580 atomic_set(&qedi->link_state, QEDI_LINK_DOWN); 2581 2582 rc = qedi_ops->fill_dev_info(qedi->cdev, &qedi->dev_info); 2583 if (rc) 2584 goto free_host; 2585 2586 QEDI_INFO(&qedi->dbg_ctx, QEDI_LOG_INFO, 2587 "dev_info: num_hwfns=%d affin_hwfn_idx=%d.\n", 2588 qedi->dev_info.common.num_hwfns, 2589 qedi_ops->common->get_affin_hwfn_idx(qedi->cdev)); 2590 2591 rc = qedi_set_iscsi_pf_param(qedi); 2592 if (rc) { 2593 rc = -ENOMEM; 2594 QEDI_ERR(&qedi->dbg_ctx, 2595 "Set iSCSI pf param fail\n"); 2596 goto free_host; 2597 } 2598 2599 qedi_ops->common->update_pf_params(qedi->cdev, &qedi->pf_params); 2600 2601 rc = qedi_prepare_fp(qedi); 2602 if (rc) { 2603 QEDI_ERR(&qedi->dbg_ctx, "Cannot start slowpath.\n"); 2604 goto free_pf_params; 2605 } 2606 2607 /* Start the Slowpath-process */ 2608 memset(&sp_params, 0, sizeof(struct qed_slowpath_params)); 2609 sp_params.int_mode = QED_INT_MODE_MSIX; 2610 sp_params.drv_major = QEDI_DRIVER_MAJOR_VER; 2611 sp_params.drv_minor = QEDI_DRIVER_MINOR_VER; 2612 sp_params.drv_rev = QEDI_DRIVER_REV_VER; 2613 sp_params.drv_eng = QEDI_DRIVER_ENG_VER; 2614 strscpy(sp_params.name, "qedi iSCSI", QED_DRV_VER_STR_SIZE); 2615 rc = qedi_ops->common->slowpath_start(qedi->cdev, &sp_params); 2616 if (rc) { 2617 QEDI_ERR(&qedi->dbg_ctx, "Cannot start slowpath\n"); 2618 goto stop_hw; 2619 } 2620 2621 /* update_pf_params needs to be called before and after slowpath 2622 * start 2623 */ 2624 qedi_ops->common->update_pf_params(qedi->cdev, &qedi->pf_params); 2625 2626 rc = qedi_setup_int(qedi); 2627 if (rc) 2628 goto stop_iscsi_func; 2629 2630 qedi_ops->common->set_power_state(qedi->cdev, PCI_D0); 2631 2632 /* Learn information crucial for qedi to progress */ 2633 rc = qedi_ops->fill_dev_info(qedi->cdev, &qedi->dev_info); 2634 if (rc) 2635 goto stop_iscsi_func; 2636 2637 /* Record BDQ producer doorbell addresses */ 2638 qedi->bdq_primary_prod = qedi->dev_info.primary_dbq_rq_addr; 2639 qedi->bdq_secondary_prod = qedi->dev_info.secondary_bdq_rq_addr; 2640 QEDI_INFO(&qedi->dbg_ctx, QEDI_LOG_DISC, 2641 "BDQ primary_prod=%p secondary_prod=%p.\n", 2642 qedi->bdq_primary_prod, 2643 qedi->bdq_secondary_prod); 2644 2645 /* 2646 * We need to write the number of BDs in the BDQ we've preallocated so 2647 * the f/w will do a prefetch and we'll get an unsolicited CQE when a 2648 * packet arrives. 2649 */ 2650 qedi->bdq_prod_idx = QEDI_BDQ_NUM; 2651 QEDI_INFO(&qedi->dbg_ctx, QEDI_LOG_DISC, 2652 "Writing %d to primary and secondary BDQ doorbell registers.\n", 2653 qedi->bdq_prod_idx); 2654 writew(qedi->bdq_prod_idx, qedi->bdq_primary_prod); 2655 readw(qedi->bdq_primary_prod); 2656 writew(qedi->bdq_prod_idx, qedi->bdq_secondary_prod); 2657 readw(qedi->bdq_secondary_prod); 2658 2659 ether_addr_copy(qedi->mac, qedi->dev_info.common.hw_mac); 2660 QEDI_INFO(&qedi->dbg_ctx, QEDI_LOG_DISC, "MAC address is %pM.\n", 2661 qedi->mac); 2662 2663 snprintf(host_buf, sizeof(host_buf), "host_%d", qedi->shost->host_no); 2664 qedi_ops->common->set_name(qedi->cdev, host_buf); 2665 2666 qedi_ops->register_ops(qedi->cdev, &qedi_cb_ops, qedi); 2667 2668 memset(¶ms, 0, sizeof(params)); 2669 params.mtu = DEF_PATH_MTU + IPV6_HDR_LEN + TCP_HDR_LEN; 2670 qedi->ll2_mtu = DEF_PATH_MTU; 2671 params.drop_ttl0_packets = 0; 2672 params.rx_vlan_stripping = 1; 2673 ether_addr_copy(params.ll2_mac_address, qedi->dev_info.common.hw_mac); 2674 2675 if (mode != QEDI_MODE_RECOVERY) { 2676 /* set up rx path */ 2677 INIT_LIST_HEAD(&qedi->ll2_skb_list); 2678 spin_lock_init(&qedi->ll2_lock); 2679 /* start qedi context */ 2680 spin_lock_init(&qedi->hba_lock); 2681 spin_lock_init(&qedi->task_idx_lock); 2682 mutex_init(&qedi->stats_lock); 2683 } 2684 qedi_ops->ll2->register_cb_ops(qedi->cdev, &qedi_ll2_cb_ops, qedi); 2685 qedi_ops->ll2->start(qedi->cdev, ¶ms); 2686 2687 if (mode != QEDI_MODE_RECOVERY) { 2688 qedi->ll2_recv_thread = kthread_run(qedi_ll2_recv_thread, 2689 (void *)qedi, 2690 "qedi_ll2_thread"); 2691 } 2692 2693 rc = qedi_ops->start(qedi->cdev, &qedi->tasks, 2694 qedi, qedi_iscsi_event_cb); 2695 if (rc) { 2696 rc = -ENODEV; 2697 QEDI_ERR(&qedi->dbg_ctx, "Cannot start iSCSI function\n"); 2698 goto stop_slowpath; 2699 } 2700 2701 task_start = qedi_get_task_mem(&qedi->tasks, 0); 2702 task_end = qedi_get_task_mem(&qedi->tasks, MAX_TID_BLOCKS_ISCSI - 1); 2703 QEDI_INFO(&qedi->dbg_ctx, QEDI_LOG_DISC, 2704 "Task context start=%p, end=%p block_size=%u.\n", 2705 task_start, task_end, qedi->tasks.size); 2706 2707 memset(&link_params, 0, sizeof(link_params)); 2708 link_params.link_up = true; 2709 rc = qedi_ops->common->set_link(qedi->cdev, &link_params); 2710 if (rc) { 2711 QEDI_WARN(&qedi->dbg_ctx, "Link set up failed.\n"); 2712 atomic_set(&qedi->link_state, QEDI_LINK_DOWN); 2713 } 2714 2715#ifdef CONFIG_DEBUG_FS 2716 qedi_dbg_host_init(&qedi->dbg_ctx, qedi_debugfs_ops, 2717 qedi_dbg_fops); 2718#endif 2719 QEDI_INFO(&qedi->dbg_ctx, QEDI_LOG_INFO, 2720 "QLogic FastLinQ iSCSI Module qedi %s, FW %d.%d.%d.%d\n", 2721 QEDI_MODULE_VERSION, FW_MAJOR_VERSION, FW_MINOR_VERSION, 2722 FW_REVISION_VERSION, FW_ENGINEERING_VERSION); 2723 2724 if (mode == QEDI_MODE_NORMAL) { 2725 if (iscsi_host_add(qedi->shost, &pdev->dev)) { 2726 QEDI_ERR(&qedi->dbg_ctx, 2727 "Could not add iscsi host\n"); 2728 rc = -ENOMEM; 2729 goto remove_host; 2730 } 2731 2732 /* Allocate uio buffers */ 2733 rc = qedi_alloc_uio_rings(qedi); 2734 if (rc) { 2735 QEDI_ERR(&qedi->dbg_ctx, 2736 "UIO alloc ring failed err=%d\n", rc); 2737 goto remove_host; 2738 } 2739 2740 rc = qedi_init_uio(qedi); 2741 if (rc) { 2742 QEDI_ERR(&qedi->dbg_ctx, 2743 "UIO init failed, err=%d\n", rc); 2744 goto free_uio; 2745 } 2746 2747 /* host the array on iscsi_conn */ 2748 rc = qedi_setup_cid_que(qedi); 2749 if (rc) { 2750 QEDI_ERR(&qedi->dbg_ctx, 2751 "Could not setup cid que\n"); 2752 goto free_uio; 2753 } 2754 2755 rc = qedi_cm_alloc_mem(qedi); 2756 if (rc) { 2757 QEDI_ERR(&qedi->dbg_ctx, 2758 "Could not alloc cm memory\n"); 2759 goto free_cid_que; 2760 } 2761 2762 rc = qedi_alloc_itt(qedi); 2763 if (rc) { 2764 QEDI_ERR(&qedi->dbg_ctx, 2765 "Could not alloc itt memory\n"); 2766 goto free_cid_que; 2767 } 2768 2769 sprintf(host_buf, "host_%d", qedi->shost->host_no); 2770 qedi->tmf_thread = create_singlethread_workqueue(host_buf); 2771 if (!qedi->tmf_thread) { 2772 QEDI_ERR(&qedi->dbg_ctx, 2773 "Unable to start tmf thread!\n"); 2774 rc = -ENODEV; 2775 goto free_cid_que; 2776 } 2777 2778 sprintf(host_buf, "qedi_ofld%d", qedi->shost->host_no); 2779 qedi->offload_thread = create_workqueue(host_buf); 2780 if (!qedi->offload_thread) { 2781 QEDI_ERR(&qedi->dbg_ctx, 2782 "Unable to start offload thread!\n"); 2783 rc = -ENODEV; 2784 goto free_tmf_thread; 2785 } 2786 2787 INIT_DELAYED_WORK(&qedi->recovery_work, qedi_recovery_handler); 2788 INIT_DELAYED_WORK(&qedi->board_disable_work, 2789 qedi_board_disable_work); 2790 2791 /* F/w needs 1st task context memory entry for performance */ 2792 set_bit(QEDI_RESERVE_TASK_ID, qedi->task_idx_map); 2793 atomic_set(&qedi->num_offloads, 0); 2794 2795 if (qedi_setup_boot_info(qedi)) 2796 QEDI_ERR(&qedi->dbg_ctx, 2797 "No iSCSI boot target configured\n"); 2798 2799 rc = qedi_ops->common->update_drv_state(qedi->cdev, true); 2800 if (rc) 2801 QEDI_ERR(&qedi->dbg_ctx, 2802 "Failed to send drv state to MFW\n"); 2803 2804 } 2805 2806 return 0; 2807 2808free_tmf_thread: 2809 destroy_workqueue(qedi->tmf_thread); 2810free_cid_que: 2811 qedi_release_cid_que(qedi); 2812free_uio: 2813 qedi_free_uio(qedi->udev); 2814remove_host: 2815#ifdef CONFIG_DEBUG_FS 2816 qedi_dbg_host_exit(&qedi->dbg_ctx); 2817#endif 2818 iscsi_host_remove(qedi->shost, false); 2819stop_iscsi_func: 2820 qedi_ops->stop(qedi->cdev); 2821stop_slowpath: 2822 qedi_ops->common->slowpath_stop(qedi->cdev); 2823stop_hw: 2824 qedi_ops->common->remove(qedi->cdev); 2825free_pf_params: 2826 qedi_free_iscsi_pf_param(qedi); 2827free_host: 2828 iscsi_host_free(qedi->shost); 2829exit_probe: 2830 return rc; 2831} 2832 2833static void qedi_mark_conn_recovery(struct iscsi_cls_session *cls_session) 2834{ 2835 struct iscsi_session *session = cls_session->dd_data; 2836 struct iscsi_conn *conn = session->leadconn; 2837 struct qedi_conn *qedi_conn = conn->dd_data; 2838 2839 iscsi_conn_failure(qedi_conn->cls_conn->dd_data, ISCSI_ERR_CONN_FAILED); 2840} 2841 2842static void qedi_recovery_handler(struct work_struct *work) 2843{ 2844 struct qedi_ctx *qedi = 2845 container_of(work, struct qedi_ctx, recovery_work.work); 2846 2847 iscsi_host_for_each_session(qedi->shost, qedi_mark_conn_recovery); 2848 2849 /* Call common_ops->recovery_prolog to allow the MFW to quiesce 2850 * any PCI transactions. 2851 */ 2852 qedi_ops->common->recovery_prolog(qedi->cdev); 2853 2854 __qedi_remove(qedi->pdev, QEDI_MODE_RECOVERY); 2855 __qedi_probe(qedi->pdev, QEDI_MODE_RECOVERY); 2856 clear_bit(QEDI_IN_RECOVERY, &qedi->flags); 2857} 2858 2859static int qedi_probe(struct pci_dev *pdev, const struct pci_device_id *id) 2860{ 2861 return __qedi_probe(pdev, QEDI_MODE_NORMAL); 2862} 2863 2864static void qedi_remove(struct pci_dev *pdev) 2865{ 2866 __qedi_remove(pdev, QEDI_MODE_NORMAL); 2867} 2868 2869static struct pci_device_id qedi_pci_tbl[] = { 2870 { PCI_DEVICE(PCI_VENDOR_ID_QLOGIC, 0x165E) }, 2871 { PCI_DEVICE(PCI_VENDOR_ID_QLOGIC, 0x8084) }, 2872 { 0 }, 2873}; 2874MODULE_DEVICE_TABLE(pci, qedi_pci_tbl); 2875 2876static enum cpuhp_state qedi_cpuhp_state; 2877 2878static struct pci_error_handlers qedi_err_handler = { 2879 .error_detected = qedi_io_error_detected, 2880}; 2881 2882static struct pci_driver qedi_pci_driver = { 2883 .name = QEDI_MODULE_NAME, 2884 .id_table = qedi_pci_tbl, 2885 .probe = qedi_probe, 2886 .remove = qedi_remove, 2887 .shutdown = qedi_shutdown, 2888 .err_handler = &qedi_err_handler, 2889 .suspend = qedi_suspend, 2890}; 2891 2892static int __init qedi_init(void) 2893{ 2894 struct qedi_percpu_s *p; 2895 int cpu, rc = 0; 2896 2897 qedi_ops = qed_get_iscsi_ops(); 2898 if (!qedi_ops) { 2899 QEDI_ERR(NULL, "Failed to get qed iSCSI operations\n"); 2900 return -EINVAL; 2901 } 2902 2903#ifdef CONFIG_DEBUG_FS 2904 qedi_dbg_init("qedi"); 2905#endif 2906 2907 qedi_scsi_transport = iscsi_register_transport(&qedi_iscsi_transport); 2908 if (!qedi_scsi_transport) { 2909 QEDI_ERR(NULL, "Could not register qedi transport"); 2910 rc = -ENOMEM; 2911 goto exit_qedi_init_1; 2912 } 2913 2914 for_each_possible_cpu(cpu) { 2915 p = &per_cpu(qedi_percpu, cpu); 2916 INIT_LIST_HEAD(&p->work_list); 2917 spin_lock_init(&p->p_work_lock); 2918 p->iothread = NULL; 2919 } 2920 2921 rc = cpuhp_setup_state(CPUHP_AP_ONLINE_DYN, "scsi/qedi:online", 2922 qedi_cpu_online, qedi_cpu_offline); 2923 if (rc < 0) 2924 goto exit_qedi_init_2; 2925 qedi_cpuhp_state = rc; 2926 2927 rc = pci_register_driver(&qedi_pci_driver); 2928 if (rc) { 2929 QEDI_ERR(NULL, "Failed to register driver\n"); 2930 goto exit_qedi_hp; 2931 } 2932 2933 return 0; 2934 2935exit_qedi_hp: 2936 cpuhp_remove_state(qedi_cpuhp_state); 2937exit_qedi_init_2: 2938 iscsi_unregister_transport(&qedi_iscsi_transport); 2939exit_qedi_init_1: 2940#ifdef CONFIG_DEBUG_FS 2941 qedi_dbg_exit(); 2942#endif 2943 qed_put_iscsi_ops(); 2944 return rc; 2945} 2946 2947static void __exit qedi_cleanup(void) 2948{ 2949 pci_unregister_driver(&qedi_pci_driver); 2950 cpuhp_remove_state(qedi_cpuhp_state); 2951 iscsi_unregister_transport(&qedi_iscsi_transport); 2952 2953#ifdef CONFIG_DEBUG_FS 2954 qedi_dbg_exit(); 2955#endif 2956 qed_put_iscsi_ops(); 2957} 2958 2959MODULE_DESCRIPTION("QLogic FastLinQ 4xxxx iSCSI Module"); 2960MODULE_LICENSE("GPL"); 2961MODULE_AUTHOR("QLogic Corporation"); 2962MODULE_VERSION(QEDI_MODULE_VERSION); 2963module_init(qedi_init); 2964module_exit(qedi_cleanup); 2965