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 rc = -ENOMEM; 282 goto err_udev; 283 } 284 285 udev->uio_dev = -1; 286 287 udev->qedi = qedi; 288 udev->pdev = qedi->pdev; 289 290 rc = __qedi_alloc_uio_rings(udev); 291 if (rc) 292 goto err_uctrl; 293 294 list_add(&udev->list, &qedi_udev_list); 295 296 pci_dev_get(udev->pdev); 297 qedi->udev = udev; 298 299 udev->tx_pkt = udev->ll2_buf; 300 udev->rx_pkt = udev->ll2_buf + qedi_ll2_buf_size; 301 return 0; 302 303 err_uctrl: 304 kfree(udev); 305 err_udev: 306 return -ENOMEM; 307} 308 309static int qedi_init_uio(struct qedi_ctx *qedi) 310{ 311 struct qedi_uio_dev *udev = qedi->udev; 312 struct uio_info *uinfo; 313 int ret = 0; 314 315 if (!udev) 316 return -ENOMEM; 317 318 uinfo = &udev->qedi_uinfo; 319 320 uinfo->mem[0].addr = (unsigned long)udev->uctrl; 321 uinfo->mem[0].size = sizeof(struct qedi_uio_ctrl); 322 uinfo->mem[0].memtype = UIO_MEM_LOGICAL; 323 324 uinfo->mem[1].addr = (unsigned long)udev->ll2_ring; 325 uinfo->mem[1].size = udev->ll2_ring_size; 326 uinfo->mem[1].memtype = UIO_MEM_LOGICAL; 327 328 uinfo->mem[2].addr = (unsigned long)udev->ll2_buf; 329 uinfo->mem[2].size = udev->ll2_buf_size; 330 uinfo->mem[2].memtype = UIO_MEM_LOGICAL; 331 332 uinfo->name = "qedi_uio"; 333 uinfo->version = QEDI_MODULE_VERSION; 334 uinfo->irq = UIO_IRQ_CUSTOM; 335 336 uinfo->open = qedi_uio_open; 337 uinfo->release = qedi_uio_close; 338 339 if (udev->uio_dev == -1) { 340 if (!uinfo->priv) { 341 uinfo->priv = udev; 342 343 ret = uio_register_device(&udev->pdev->dev, uinfo); 344 if (ret) { 345 QEDI_ERR(&qedi->dbg_ctx, 346 "UIO registration failed\n"); 347 } 348 } 349 } 350 351 return ret; 352} 353 354static int qedi_alloc_and_init_sb(struct qedi_ctx *qedi, 355 struct qed_sb_info *sb_info, u16 sb_id) 356{ 357 struct status_block_e4 *sb_virt; 358 dma_addr_t sb_phys; 359 int ret; 360 361 sb_virt = dma_alloc_coherent(&qedi->pdev->dev, 362 sizeof(struct status_block_e4), &sb_phys, 363 GFP_KERNEL); 364 if (!sb_virt) { 365 QEDI_ERR(&qedi->dbg_ctx, 366 "Status block allocation failed for id = %d.\n", 367 sb_id); 368 return -ENOMEM; 369 } 370 371 ret = qedi_ops->common->sb_init(qedi->cdev, sb_info, sb_virt, sb_phys, 372 sb_id, QED_SB_TYPE_STORAGE); 373 if (ret) { 374 QEDI_ERR(&qedi->dbg_ctx, 375 "Status block initialization failed for id = %d.\n", 376 sb_id); 377 return ret; 378 } 379 380 return 0; 381} 382 383static void qedi_free_sb(struct qedi_ctx *qedi) 384{ 385 struct qed_sb_info *sb_info; 386 int id; 387 388 for (id = 0; id < MIN_NUM_CPUS_MSIX(qedi); id++) { 389 sb_info = &qedi->sb_array[id]; 390 if (sb_info->sb_virt) 391 dma_free_coherent(&qedi->pdev->dev, 392 sizeof(*sb_info->sb_virt), 393 (void *)sb_info->sb_virt, 394 sb_info->sb_phys); 395 } 396} 397 398static void qedi_free_fp(struct qedi_ctx *qedi) 399{ 400 kfree(qedi->fp_array); 401 kfree(qedi->sb_array); 402} 403 404static void qedi_destroy_fp(struct qedi_ctx *qedi) 405{ 406 qedi_free_sb(qedi); 407 qedi_free_fp(qedi); 408} 409 410static int qedi_alloc_fp(struct qedi_ctx *qedi) 411{ 412 int ret = 0; 413 414 qedi->fp_array = kcalloc(MIN_NUM_CPUS_MSIX(qedi), 415 sizeof(struct qedi_fastpath), GFP_KERNEL); 416 if (!qedi->fp_array) { 417 QEDI_ERR(&qedi->dbg_ctx, 418 "fastpath fp array allocation failed.\n"); 419 return -ENOMEM; 420 } 421 422 qedi->sb_array = kcalloc(MIN_NUM_CPUS_MSIX(qedi), 423 sizeof(struct qed_sb_info), GFP_KERNEL); 424 if (!qedi->sb_array) { 425 QEDI_ERR(&qedi->dbg_ctx, 426 "fastpath sb array allocation failed.\n"); 427 ret = -ENOMEM; 428 goto free_fp; 429 } 430 431 return ret; 432 433free_fp: 434 qedi_free_fp(qedi); 435 return ret; 436} 437 438static void qedi_int_fp(struct qedi_ctx *qedi) 439{ 440 struct qedi_fastpath *fp; 441 int id; 442 443 memset(qedi->fp_array, 0, MIN_NUM_CPUS_MSIX(qedi) * 444 sizeof(*qedi->fp_array)); 445 memset(qedi->sb_array, 0, MIN_NUM_CPUS_MSIX(qedi) * 446 sizeof(*qedi->sb_array)); 447 448 for (id = 0; id < MIN_NUM_CPUS_MSIX(qedi); id++) { 449 fp = &qedi->fp_array[id]; 450 fp->sb_info = &qedi->sb_array[id]; 451 fp->sb_id = id; 452 fp->qedi = qedi; 453 snprintf(fp->name, sizeof(fp->name), "%s-fp-%d", 454 "qedi", id); 455 456 /* fp_array[i] ---- irq cookie 457 * So init data which is needed in int ctx 458 */ 459 } 460} 461 462static int qedi_prepare_fp(struct qedi_ctx *qedi) 463{ 464 struct qedi_fastpath *fp; 465 int id, ret = 0; 466 467 ret = qedi_alloc_fp(qedi); 468 if (ret) 469 goto err; 470 471 qedi_int_fp(qedi); 472 473 for (id = 0; id < MIN_NUM_CPUS_MSIX(qedi); id++) { 474 fp = &qedi->fp_array[id]; 475 ret = qedi_alloc_and_init_sb(qedi, fp->sb_info, fp->sb_id); 476 if (ret) { 477 QEDI_ERR(&qedi->dbg_ctx, 478 "SB allocation and initialization failed.\n"); 479 ret = -EIO; 480 goto err_init; 481 } 482 } 483 484 return 0; 485 486err_init: 487 qedi_free_sb(qedi); 488 qedi_free_fp(qedi); 489err: 490 return ret; 491} 492 493static int qedi_setup_cid_que(struct qedi_ctx *qedi) 494{ 495 int i; 496 497 qedi->cid_que.cid_que_base = kmalloc_array(qedi->max_active_conns, 498 sizeof(u32), GFP_KERNEL); 499 if (!qedi->cid_que.cid_que_base) 500 return -ENOMEM; 501 502 qedi->cid_que.conn_cid_tbl = kmalloc_array(qedi->max_active_conns, 503 sizeof(struct qedi_conn *), 504 GFP_KERNEL); 505 if (!qedi->cid_que.conn_cid_tbl) { 506 kfree(qedi->cid_que.cid_que_base); 507 qedi->cid_que.cid_que_base = NULL; 508 return -ENOMEM; 509 } 510 511 qedi->cid_que.cid_que = (u32 *)qedi->cid_que.cid_que_base; 512 qedi->cid_que.cid_q_prod_idx = 0; 513 qedi->cid_que.cid_q_cons_idx = 0; 514 qedi->cid_que.cid_q_max_idx = qedi->max_active_conns; 515 qedi->cid_que.cid_free_cnt = qedi->max_active_conns; 516 517 for (i = 0; i < qedi->max_active_conns; i++) { 518 qedi->cid_que.cid_que[i] = i; 519 qedi->cid_que.conn_cid_tbl[i] = NULL; 520 } 521 522 return 0; 523} 524 525static void qedi_release_cid_que(struct qedi_ctx *qedi) 526{ 527 kfree(qedi->cid_que.cid_que_base); 528 qedi->cid_que.cid_que_base = NULL; 529 530 kfree(qedi->cid_que.conn_cid_tbl); 531 qedi->cid_que.conn_cid_tbl = NULL; 532} 533 534static int qedi_init_id_tbl(struct qedi_portid_tbl *id_tbl, u16 size, 535 u16 start_id, u16 next) 536{ 537 id_tbl->start = start_id; 538 id_tbl->max = size; 539 id_tbl->next = next; 540 spin_lock_init(&id_tbl->lock); 541 id_tbl->table = kcalloc(BITS_TO_LONGS(size), sizeof(long), GFP_KERNEL); 542 if (!id_tbl->table) 543 return -ENOMEM; 544 545 return 0; 546} 547 548static void qedi_free_id_tbl(struct qedi_portid_tbl *id_tbl) 549{ 550 kfree(id_tbl->table); 551 id_tbl->table = NULL; 552} 553 554int qedi_alloc_id(struct qedi_portid_tbl *id_tbl, u16 id) 555{ 556 int ret = -1; 557 558 id -= id_tbl->start; 559 if (id >= id_tbl->max) 560 return ret; 561 562 spin_lock(&id_tbl->lock); 563 if (!test_bit(id, id_tbl->table)) { 564 set_bit(id, id_tbl->table); 565 ret = 0; 566 } 567 spin_unlock(&id_tbl->lock); 568 return ret; 569} 570 571u16 qedi_alloc_new_id(struct qedi_portid_tbl *id_tbl) 572{ 573 u16 id; 574 575 spin_lock(&id_tbl->lock); 576 id = find_next_zero_bit(id_tbl->table, id_tbl->max, id_tbl->next); 577 if (id >= id_tbl->max) { 578 id = QEDI_LOCAL_PORT_INVALID; 579 if (id_tbl->next != 0) { 580 id = find_first_zero_bit(id_tbl->table, id_tbl->next); 581 if (id >= id_tbl->next) 582 id = QEDI_LOCAL_PORT_INVALID; 583 } 584 } 585 586 if (id < id_tbl->max) { 587 set_bit(id, id_tbl->table); 588 id_tbl->next = (id + 1) & (id_tbl->max - 1); 589 id += id_tbl->start; 590 } 591 592 spin_unlock(&id_tbl->lock); 593 594 return id; 595} 596 597void qedi_free_id(struct qedi_portid_tbl *id_tbl, u16 id) 598{ 599 if (id == QEDI_LOCAL_PORT_INVALID) 600 return; 601 602 id -= id_tbl->start; 603 if (id >= id_tbl->max) 604 return; 605 606 clear_bit(id, id_tbl->table); 607} 608 609static void qedi_cm_free_mem(struct qedi_ctx *qedi) 610{ 611 kfree(qedi->ep_tbl); 612 qedi->ep_tbl = NULL; 613 qedi_free_id_tbl(&qedi->lcl_port_tbl); 614} 615 616static int qedi_cm_alloc_mem(struct qedi_ctx *qedi) 617{ 618 u16 port_id; 619 620 qedi->ep_tbl = kzalloc((qedi->max_active_conns * 621 sizeof(struct qedi_endpoint *)), GFP_KERNEL); 622 if (!qedi->ep_tbl) 623 return -ENOMEM; 624 port_id = prandom_u32() % QEDI_LOCAL_PORT_RANGE; 625 if (qedi_init_id_tbl(&qedi->lcl_port_tbl, QEDI_LOCAL_PORT_RANGE, 626 QEDI_LOCAL_PORT_MIN, port_id)) { 627 qedi_cm_free_mem(qedi); 628 return -ENOMEM; 629 } 630 631 return 0; 632} 633 634static struct qedi_ctx *qedi_host_alloc(struct pci_dev *pdev) 635{ 636 struct Scsi_Host *shost; 637 struct qedi_ctx *qedi = NULL; 638 639 shost = iscsi_host_alloc(&qedi_host_template, 640 sizeof(struct qedi_ctx), 0); 641 if (!shost) { 642 QEDI_ERR(NULL, "Could not allocate shost\n"); 643 goto exit_setup_shost; 644 } 645 646 shost->max_id = QEDI_MAX_ISCSI_CONNS_PER_HBA - 1; 647 shost->max_channel = 0; 648 shost->max_lun = ~0; 649 shost->max_cmd_len = 16; 650 shost->transportt = qedi_scsi_transport; 651 652 qedi = iscsi_host_priv(shost); 653 memset(qedi, 0, sizeof(*qedi)); 654 qedi->shost = shost; 655 qedi->dbg_ctx.host_no = shost->host_no; 656 qedi->pdev = pdev; 657 qedi->dbg_ctx.pdev = pdev; 658 qedi->max_active_conns = ISCSI_MAX_SESS_PER_HBA; 659 qedi->max_sqes = QEDI_SQ_SIZE; 660 661 shost->nr_hw_queues = MIN_NUM_CPUS_MSIX(qedi); 662 663 pci_set_drvdata(pdev, qedi); 664 665exit_setup_shost: 666 return qedi; 667} 668 669static int qedi_ll2_rx(void *cookie, struct sk_buff *skb, u32 arg1, u32 arg2) 670{ 671 struct qedi_ctx *qedi = (struct qedi_ctx *)cookie; 672 struct skb_work_list *work; 673 struct ethhdr *eh; 674 675 if (!qedi) { 676 QEDI_ERR(NULL, "qedi is NULL\n"); 677 return -1; 678 } 679 680 if (!test_bit(UIO_DEV_OPENED, &qedi->flags)) { 681 QEDI_INFO(&qedi->dbg_ctx, QEDI_LOG_UIO, 682 "UIO DEV is not opened\n"); 683 kfree_skb(skb); 684 return 0; 685 } 686 687 eh = (struct ethhdr *)skb->data; 688 /* Undo VLAN encapsulation */ 689 if (eh->h_proto == htons(ETH_P_8021Q)) { 690 memmove((u8 *)eh + VLAN_HLEN, eh, ETH_ALEN * 2); 691 eh = (struct ethhdr *)skb_pull(skb, VLAN_HLEN); 692 skb_reset_mac_header(skb); 693 } 694 695 /* Filter out non FIP/FCoE frames here to free them faster */ 696 if (eh->h_proto != htons(ETH_P_ARP) && 697 eh->h_proto != htons(ETH_P_IP) && 698 eh->h_proto != htons(ETH_P_IPV6)) { 699 QEDI_INFO(&qedi->dbg_ctx, QEDI_LOG_LL2, 700 "Dropping frame ethertype [0x%x] len [0x%x].\n", 701 eh->h_proto, skb->len); 702 kfree_skb(skb); 703 return 0; 704 } 705 706 QEDI_INFO(&qedi->dbg_ctx, QEDI_LOG_LL2, 707 "Allowed frame ethertype [0x%x] len [0x%x].\n", 708 eh->h_proto, skb->len); 709 710 work = kzalloc(sizeof(*work), GFP_ATOMIC); 711 if (!work) { 712 QEDI_WARN(&qedi->dbg_ctx, 713 "Could not allocate work so dropping frame.\n"); 714 kfree_skb(skb); 715 return 0; 716 } 717 718 INIT_LIST_HEAD(&work->list); 719 work->skb = skb; 720 721 if (skb_vlan_tag_present(skb)) 722 work->vlan_id = skb_vlan_tag_get(skb); 723 724 if (work->vlan_id) 725 __vlan_insert_tag(work->skb, htons(ETH_P_8021Q), work->vlan_id); 726 727 spin_lock_bh(&qedi->ll2_lock); 728 list_add_tail(&work->list, &qedi->ll2_skb_list); 729 spin_unlock_bh(&qedi->ll2_lock); 730 731 wake_up_process(qedi->ll2_recv_thread); 732 733 return 0; 734} 735 736/* map this skb to iscsiuio mmaped region */ 737static int qedi_ll2_process_skb(struct qedi_ctx *qedi, struct sk_buff *skb, 738 u16 vlan_id) 739{ 740 struct qedi_uio_dev *udev = NULL; 741 struct qedi_uio_ctrl *uctrl = NULL; 742 struct qedi_rx_bd rxbd; 743 struct qedi_rx_bd *p_rxbd; 744 u32 rx_bd_prod; 745 void *pkt; 746 int len = 0; 747 u32 prod; 748 749 if (!qedi) { 750 QEDI_ERR(NULL, "qedi is NULL\n"); 751 return -1; 752 } 753 754 udev = qedi->udev; 755 uctrl = udev->uctrl; 756 757 ++uctrl->hw_rx_prod_cnt; 758 prod = (uctrl->hw_rx_prod + 1) % RX_RING; 759 760 pkt = udev->rx_pkt + (prod * qedi_ll2_buf_size); 761 len = min_t(u32, skb->len, (u32)qedi_ll2_buf_size); 762 memcpy(pkt, skb->data, len); 763 764 memset(&rxbd, 0, sizeof(rxbd)); 765 rxbd.rx_pkt_index = prod; 766 rxbd.rx_pkt_len = len; 767 rxbd.vlan_id = vlan_id; 768 769 uctrl->hw_rx_bd_prod = (uctrl->hw_rx_bd_prod + 1) % QEDI_NUM_RX_BD; 770 rx_bd_prod = uctrl->hw_rx_bd_prod; 771 p_rxbd = (struct qedi_rx_bd *)udev->ll2_ring; 772 p_rxbd += rx_bd_prod; 773 774 memcpy(p_rxbd, &rxbd, sizeof(rxbd)); 775 776 QEDI_INFO(&qedi->dbg_ctx, QEDI_LOG_LL2, 777 "hw_rx_prod [%d] prod [%d] hw_rx_bd_prod [%d] rx_pkt_idx [%d] rx_len [%d].\n", 778 uctrl->hw_rx_prod, prod, uctrl->hw_rx_bd_prod, 779 rxbd.rx_pkt_index, rxbd.rx_pkt_len); 780 QEDI_INFO(&qedi->dbg_ctx, QEDI_LOG_LL2, 781 "host_rx_cons [%d] hw_rx_bd_cons [%d].\n", 782 uctrl->host_rx_cons, uctrl->host_rx_bd_cons); 783 784 uctrl->hw_rx_prod = prod; 785 786 /* notify the iscsiuio about new packet */ 787 uio_event_notify(&udev->qedi_uinfo); 788 789 return 0; 790} 791 792static void qedi_ll2_free_skbs(struct qedi_ctx *qedi) 793{ 794 struct skb_work_list *work, *work_tmp; 795 796 spin_lock_bh(&qedi->ll2_lock); 797 list_for_each_entry_safe(work, work_tmp, &qedi->ll2_skb_list, list) { 798 list_del(&work->list); 799 kfree_skb(work->skb); 800 kfree(work); 801 } 802 spin_unlock_bh(&qedi->ll2_lock); 803} 804 805static int qedi_ll2_recv_thread(void *arg) 806{ 807 struct qedi_ctx *qedi = (struct qedi_ctx *)arg; 808 struct skb_work_list *work, *work_tmp; 809 810 set_user_nice(current, -20); 811 812 while (!kthread_should_stop()) { 813 spin_lock_bh(&qedi->ll2_lock); 814 list_for_each_entry_safe(work, work_tmp, &qedi->ll2_skb_list, 815 list) { 816 list_del(&work->list); 817 qedi_ll2_process_skb(qedi, work->skb, work->vlan_id); 818 kfree_skb(work->skb); 819 kfree(work); 820 } 821 set_current_state(TASK_INTERRUPTIBLE); 822 spin_unlock_bh(&qedi->ll2_lock); 823 schedule(); 824 } 825 826 __set_current_state(TASK_RUNNING); 827 return 0; 828} 829 830static int qedi_set_iscsi_pf_param(struct qedi_ctx *qedi) 831{ 832 u8 num_sq_pages; 833 u32 log_page_size; 834 int rval = 0; 835 836 837 num_sq_pages = (MAX_OUTSTANDING_TASKS_PER_CON * 8) / QEDI_PAGE_SIZE; 838 839 qedi->num_queues = MIN_NUM_CPUS_MSIX(qedi); 840 841 QEDI_INFO(&qedi->dbg_ctx, QEDI_LOG_INFO, 842 "Number of CQ count is %d\n", qedi->num_queues); 843 844 memset(&qedi->pf_params.iscsi_pf_params, 0, 845 sizeof(qedi->pf_params.iscsi_pf_params)); 846 847 qedi->p_cpuq = dma_alloc_coherent(&qedi->pdev->dev, 848 qedi->num_queues * sizeof(struct qedi_glbl_q_params), 849 &qedi->hw_p_cpuq, GFP_KERNEL); 850 if (!qedi->p_cpuq) { 851 QEDI_ERR(&qedi->dbg_ctx, "dma_alloc_coherent fail\n"); 852 rval = -1; 853 goto err_alloc_mem; 854 } 855 856 rval = qedi_alloc_global_queues(qedi); 857 if (rval) { 858 QEDI_ERR(&qedi->dbg_ctx, "Global queue allocation failed.\n"); 859 rval = -1; 860 goto err_alloc_mem; 861 } 862 863 qedi->pf_params.iscsi_pf_params.num_cons = QEDI_MAX_ISCSI_CONNS_PER_HBA; 864 qedi->pf_params.iscsi_pf_params.num_tasks = QEDI_MAX_ISCSI_TASK; 865 qedi->pf_params.iscsi_pf_params.half_way_close_timeout = 10; 866 qedi->pf_params.iscsi_pf_params.num_sq_pages_in_ring = num_sq_pages; 867 qedi->pf_params.iscsi_pf_params.num_r2tq_pages_in_ring = num_sq_pages; 868 qedi->pf_params.iscsi_pf_params.num_uhq_pages_in_ring = num_sq_pages; 869 qedi->pf_params.iscsi_pf_params.num_queues = qedi->num_queues; 870 qedi->pf_params.iscsi_pf_params.debug_mode = qedi_fw_debug; 871 qedi->pf_params.iscsi_pf_params.two_msl_timer = 4000; 872 qedi->pf_params.iscsi_pf_params.max_fin_rt = 2; 873 874 for (log_page_size = 0 ; log_page_size < 32 ; log_page_size++) { 875 if ((1 << log_page_size) == QEDI_PAGE_SIZE) 876 break; 877 } 878 qedi->pf_params.iscsi_pf_params.log_page_size = log_page_size; 879 880 qedi->pf_params.iscsi_pf_params.glbl_q_params_addr = 881 (u64)qedi->hw_p_cpuq; 882 883 /* RQ BDQ initializations. 884 * rq_num_entries: suggested value for Initiator is 16 (4KB RQ) 885 * rqe_log_size: 8 for 256B RQE 886 */ 887 qedi->pf_params.iscsi_pf_params.rqe_log_size = 8; 888 /* BDQ address and size */ 889 qedi->pf_params.iscsi_pf_params.bdq_pbl_base_addr[BDQ_ID_RQ] = 890 qedi->bdq_pbl_list_dma; 891 qedi->pf_params.iscsi_pf_params.bdq_pbl_num_entries[BDQ_ID_RQ] = 892 qedi->bdq_pbl_list_num_entries; 893 qedi->pf_params.iscsi_pf_params.rq_buffer_size = QEDI_BDQ_BUF_SIZE; 894 895 /* cq_num_entries: num_tasks + rq_num_entries */ 896 qedi->pf_params.iscsi_pf_params.cq_num_entries = 2048; 897 898 qedi->pf_params.iscsi_pf_params.gl_rq_pi = QEDI_PROTO_CQ_PROD_IDX; 899 qedi->pf_params.iscsi_pf_params.gl_cmd_pi = 1; 900 901err_alloc_mem: 902 return rval; 903} 904 905/* Free DMA coherent memory for array of queue pointers we pass to qed */ 906static void qedi_free_iscsi_pf_param(struct qedi_ctx *qedi) 907{ 908 size_t size = 0; 909 910 if (qedi->p_cpuq) { 911 size = qedi->num_queues * sizeof(struct qedi_glbl_q_params); 912 dma_free_coherent(&qedi->pdev->dev, size, qedi->p_cpuq, 913 qedi->hw_p_cpuq); 914 } 915 916 qedi_free_global_queues(qedi); 917 918 kfree(qedi->global_queues); 919} 920 921static void qedi_get_boot_tgt_info(struct nvm_iscsi_block *block, 922 struct qedi_boot_target *tgt, u8 index) 923{ 924 u32 ipv6_en; 925 926 ipv6_en = !!(block->generic.ctrl_flags & 927 NVM_ISCSI_CFG_GEN_IPV6_ENABLED); 928 929 snprintf(tgt->iscsi_name, sizeof(tgt->iscsi_name), "%s", 930 block->target[index].target_name.byte); 931 932 tgt->ipv6_en = ipv6_en; 933 934 if (ipv6_en) 935 snprintf(tgt->ip_addr, IPV6_LEN, "%pI6\n", 936 block->target[index].ipv6_addr.byte); 937 else 938 snprintf(tgt->ip_addr, IPV4_LEN, "%pI4\n", 939 block->target[index].ipv4_addr.byte); 940} 941 942static int qedi_find_boot_info(struct qedi_ctx *qedi, 943 struct qed_mfw_tlv_iscsi *iscsi, 944 struct nvm_iscsi_block *block) 945{ 946 struct qedi_boot_target *pri_tgt = NULL, *sec_tgt = NULL; 947 u32 pri_ctrl_flags = 0, sec_ctrl_flags = 0, found = 0; 948 struct iscsi_cls_session *cls_sess; 949 struct iscsi_cls_conn *cls_conn; 950 struct qedi_conn *qedi_conn; 951 struct iscsi_session *sess; 952 struct iscsi_conn *conn; 953 char ep_ip_addr[64]; 954 int i, ret = 0; 955 956 pri_ctrl_flags = !!(block->target[0].ctrl_flags & 957 NVM_ISCSI_CFG_TARGET_ENABLED); 958 if (pri_ctrl_flags) { 959 pri_tgt = kzalloc(sizeof(*pri_tgt), GFP_KERNEL); 960 if (!pri_tgt) 961 return -1; 962 qedi_get_boot_tgt_info(block, pri_tgt, 0); 963 } 964 965 sec_ctrl_flags = !!(block->target[1].ctrl_flags & 966 NVM_ISCSI_CFG_TARGET_ENABLED); 967 if (sec_ctrl_flags) { 968 sec_tgt = kzalloc(sizeof(*sec_tgt), GFP_KERNEL); 969 if (!sec_tgt) { 970 ret = -1; 971 goto free_tgt; 972 } 973 qedi_get_boot_tgt_info(block, sec_tgt, 1); 974 } 975 976 for (i = 0; i < qedi->max_active_conns; i++) { 977 qedi_conn = qedi_get_conn_from_id(qedi, i); 978 if (!qedi_conn) 979 continue; 980 981 if (qedi_conn->ep->ip_type == TCP_IPV4) 982 snprintf(ep_ip_addr, IPV4_LEN, "%pI4\n", 983 qedi_conn->ep->dst_addr); 984 else 985 snprintf(ep_ip_addr, IPV6_LEN, "%pI6\n", 986 qedi_conn->ep->dst_addr); 987 988 cls_conn = qedi_conn->cls_conn; 989 conn = cls_conn->dd_data; 990 cls_sess = iscsi_conn_to_session(cls_conn); 991 sess = cls_sess->dd_data; 992 993 if (!iscsi_is_session_online(cls_sess)) 994 continue; 995 996 if (!sess->targetname) 997 continue; 998 999 if (pri_ctrl_flags) { 1000 if (!strcmp(pri_tgt->iscsi_name, sess->targetname) && 1001 !strcmp(pri_tgt->ip_addr, ep_ip_addr)) { 1002 found = 1; 1003 break; 1004 } 1005 } 1006 1007 if (sec_ctrl_flags) { 1008 if (!strcmp(sec_tgt->iscsi_name, sess->targetname) && 1009 !strcmp(sec_tgt->ip_addr, ep_ip_addr)) { 1010 found = 1; 1011 break; 1012 } 1013 } 1014 } 1015 1016 if (found) { 1017 if (conn->hdrdgst_en) { 1018 iscsi->header_digest_set = true; 1019 iscsi->header_digest = 1; 1020 } 1021 1022 if (conn->datadgst_en) { 1023 iscsi->data_digest_set = true; 1024 iscsi->data_digest = 1; 1025 } 1026 iscsi->boot_taget_portal_set = true; 1027 iscsi->boot_taget_portal = sess->tpgt; 1028 1029 } else { 1030 ret = -1; 1031 } 1032 1033 if (sec_ctrl_flags) 1034 kfree(sec_tgt); 1035free_tgt: 1036 if (pri_ctrl_flags) 1037 kfree(pri_tgt); 1038 1039 return ret; 1040} 1041 1042static void qedi_get_generic_tlv_data(void *dev, struct qed_generic_tlvs *data) 1043{ 1044 struct qedi_ctx *qedi; 1045 1046 if (!dev) { 1047 QEDI_INFO(NULL, QEDI_LOG_EVT, 1048 "dev is NULL so ignoring get_generic_tlv_data request.\n"); 1049 return; 1050 } 1051 qedi = (struct qedi_ctx *)dev; 1052 1053 memset(data, 0, sizeof(struct qed_generic_tlvs)); 1054 ether_addr_copy(data->mac[0], qedi->mac); 1055} 1056 1057/* 1058 * Protocol TLV handler 1059 */ 1060static void qedi_get_protocol_tlv_data(void *dev, void *data) 1061{ 1062 struct qed_mfw_tlv_iscsi *iscsi = data; 1063 struct qed_iscsi_stats *fw_iscsi_stats; 1064 struct nvm_iscsi_block *block = NULL; 1065 u32 chap_en = 0, mchap_en = 0; 1066 struct qedi_ctx *qedi = dev; 1067 int rval = 0; 1068 1069 fw_iscsi_stats = kmalloc(sizeof(*fw_iscsi_stats), GFP_KERNEL); 1070 if (!fw_iscsi_stats) { 1071 QEDI_ERR(&qedi->dbg_ctx, 1072 "Could not allocate memory for fw_iscsi_stats.\n"); 1073 goto exit_get_data; 1074 } 1075 1076 mutex_lock(&qedi->stats_lock); 1077 /* Query firmware for offload stats */ 1078 qedi_ops->get_stats(qedi->cdev, fw_iscsi_stats); 1079 mutex_unlock(&qedi->stats_lock); 1080 1081 iscsi->rx_frames_set = true; 1082 iscsi->rx_frames = fw_iscsi_stats->iscsi_rx_packet_cnt; 1083 iscsi->rx_bytes_set = true; 1084 iscsi->rx_bytes = fw_iscsi_stats->iscsi_rx_bytes_cnt; 1085 iscsi->tx_frames_set = true; 1086 iscsi->tx_frames = fw_iscsi_stats->iscsi_tx_packet_cnt; 1087 iscsi->tx_bytes_set = true; 1088 iscsi->tx_bytes = fw_iscsi_stats->iscsi_tx_bytes_cnt; 1089 iscsi->frame_size_set = true; 1090 iscsi->frame_size = qedi->ll2_mtu; 1091 block = qedi_get_nvram_block(qedi); 1092 if (block) { 1093 chap_en = !!(block->generic.ctrl_flags & 1094 NVM_ISCSI_CFG_GEN_CHAP_ENABLED); 1095 mchap_en = !!(block->generic.ctrl_flags & 1096 NVM_ISCSI_CFG_GEN_CHAP_MUTUAL_ENABLED); 1097 1098 iscsi->auth_method_set = (chap_en || mchap_en) ? true : false; 1099 iscsi->auth_method = 1; 1100 if (chap_en) 1101 iscsi->auth_method = 2; 1102 if (mchap_en) 1103 iscsi->auth_method = 3; 1104 1105 iscsi->tx_desc_size_set = true; 1106 iscsi->tx_desc_size = QEDI_SQ_SIZE; 1107 iscsi->rx_desc_size_set = true; 1108 iscsi->rx_desc_size = QEDI_CQ_SIZE; 1109 1110 /* tpgt, hdr digest, data digest */ 1111 rval = qedi_find_boot_info(qedi, iscsi, block); 1112 if (rval) 1113 QEDI_INFO(&qedi->dbg_ctx, QEDI_LOG_INFO, 1114 "Boot target not set"); 1115 } 1116 1117 kfree(fw_iscsi_stats); 1118exit_get_data: 1119 return; 1120} 1121 1122void qedi_schedule_hw_err_handler(void *dev, 1123 enum qed_hw_err_type err_type) 1124{ 1125 struct qedi_ctx *qedi = (struct qedi_ctx *)dev; 1126 unsigned long override_flags = qedi_flags_override; 1127 1128 if (override_flags && test_bit(QEDI_ERR_OVERRIDE_EN, &override_flags)) 1129 qedi->qedi_err_flags = qedi_flags_override; 1130 1131 QEDI_INFO(&qedi->dbg_ctx, QEDI_LOG_INFO, 1132 "HW error handler scheduled, err=%d err_flags=0x%x\n", 1133 err_type, qedi->qedi_err_flags); 1134 1135 switch (err_type) { 1136 case QED_HW_ERR_FAN_FAIL: 1137 schedule_delayed_work(&qedi->board_disable_work, 0); 1138 break; 1139 case QED_HW_ERR_MFW_RESP_FAIL: 1140 case QED_HW_ERR_HW_ATTN: 1141 case QED_HW_ERR_DMAE_FAIL: 1142 case QED_HW_ERR_RAMROD_FAIL: 1143 case QED_HW_ERR_FW_ASSERT: 1144 /* Prevent HW attentions from being reasserted */ 1145 if (test_bit(QEDI_ERR_ATTN_CLR_EN, &qedi->qedi_err_flags)) 1146 qedi_ops->common->attn_clr_enable(qedi->cdev, true); 1147 1148 if (err_type == QED_HW_ERR_RAMROD_FAIL && 1149 test_bit(QEDI_ERR_IS_RECOVERABLE, &qedi->qedi_err_flags)) 1150 qedi_ops->common->recovery_process(qedi->cdev); 1151 1152 break; 1153 default: 1154 break; 1155 } 1156} 1157 1158static void qedi_schedule_recovery_handler(void *dev) 1159{ 1160 struct qedi_ctx *qedi = dev; 1161 1162 QEDI_ERR(&qedi->dbg_ctx, "Recovery handler scheduled.\n"); 1163 1164 if (test_and_set_bit(QEDI_IN_RECOVERY, &qedi->flags)) 1165 return; 1166 1167 atomic_set(&qedi->link_state, QEDI_LINK_DOWN); 1168 1169 schedule_delayed_work(&qedi->recovery_work, 0); 1170} 1171 1172static void qedi_set_conn_recovery(struct iscsi_cls_session *cls_session) 1173{ 1174 struct iscsi_session *session = cls_session->dd_data; 1175 struct iscsi_conn *conn = session->leadconn; 1176 struct qedi_conn *qedi_conn = conn->dd_data; 1177 1178 qedi_start_conn_recovery(qedi_conn->qedi, qedi_conn); 1179} 1180 1181static void qedi_link_update(void *dev, struct qed_link_output *link) 1182{ 1183 struct qedi_ctx *qedi = (struct qedi_ctx *)dev; 1184 1185 if (link->link_up) { 1186 QEDI_INFO(&qedi->dbg_ctx, QEDI_LOG_INFO, "Link Up event.\n"); 1187 atomic_set(&qedi->link_state, QEDI_LINK_UP); 1188 } else { 1189 QEDI_INFO(&qedi->dbg_ctx, QEDI_LOG_INFO, 1190 "Link Down event.\n"); 1191 atomic_set(&qedi->link_state, QEDI_LINK_DOWN); 1192 iscsi_host_for_each_session(qedi->shost, qedi_set_conn_recovery); 1193 } 1194} 1195 1196static struct qed_iscsi_cb_ops qedi_cb_ops = { 1197 { 1198 .link_update = qedi_link_update, 1199 .schedule_recovery_handler = qedi_schedule_recovery_handler, 1200 .schedule_hw_err_handler = qedi_schedule_hw_err_handler, 1201 .get_protocol_tlv_data = qedi_get_protocol_tlv_data, 1202 .get_generic_tlv_data = qedi_get_generic_tlv_data, 1203 } 1204}; 1205 1206static int qedi_queue_cqe(struct qedi_ctx *qedi, union iscsi_cqe *cqe, 1207 u16 que_idx, struct qedi_percpu_s *p) 1208{ 1209 struct qedi_work *qedi_work; 1210 struct qedi_conn *q_conn; 1211 struct qedi_cmd *qedi_cmd; 1212 u32 iscsi_cid; 1213 int rc = 0; 1214 1215 iscsi_cid = cqe->cqe_common.conn_id; 1216 q_conn = qedi->cid_que.conn_cid_tbl[iscsi_cid]; 1217 if (!q_conn) { 1218 QEDI_WARN(&qedi->dbg_ctx, 1219 "Session no longer exists for cid=0x%x!!\n", 1220 iscsi_cid); 1221 return -1; 1222 } 1223 1224 switch (cqe->cqe_common.cqe_type) { 1225 case ISCSI_CQE_TYPE_SOLICITED: 1226 case ISCSI_CQE_TYPE_SOLICITED_WITH_SENSE: 1227 qedi_cmd = qedi_get_cmd_from_tid(qedi, cqe->cqe_solicited.itid); 1228 if (!qedi_cmd) { 1229 rc = -1; 1230 break; 1231 } 1232 INIT_LIST_HEAD(&qedi_cmd->cqe_work.list); 1233 qedi_cmd->cqe_work.qedi = qedi; 1234 memcpy(&qedi_cmd->cqe_work.cqe, cqe, sizeof(union iscsi_cqe)); 1235 qedi_cmd->cqe_work.que_idx = que_idx; 1236 qedi_cmd->cqe_work.is_solicited = true; 1237 list_add_tail(&qedi_cmd->cqe_work.list, &p->work_list); 1238 break; 1239 case ISCSI_CQE_TYPE_UNSOLICITED: 1240 case ISCSI_CQE_TYPE_DUMMY: 1241 case ISCSI_CQE_TYPE_TASK_CLEANUP: 1242 qedi_work = kzalloc(sizeof(*qedi_work), GFP_ATOMIC); 1243 if (!qedi_work) { 1244 rc = -1; 1245 break; 1246 } 1247 INIT_LIST_HEAD(&qedi_work->list); 1248 qedi_work->qedi = qedi; 1249 memcpy(&qedi_work->cqe, cqe, sizeof(union iscsi_cqe)); 1250 qedi_work->que_idx = que_idx; 1251 qedi_work->is_solicited = false; 1252 list_add_tail(&qedi_work->list, &p->work_list); 1253 break; 1254 default: 1255 rc = -1; 1256 QEDI_ERR(&qedi->dbg_ctx, "FW Error cqe.\n"); 1257 } 1258 return rc; 1259} 1260 1261static bool qedi_process_completions(struct qedi_fastpath *fp) 1262{ 1263 struct qedi_ctx *qedi = fp->qedi; 1264 struct qed_sb_info *sb_info = fp->sb_info; 1265 struct status_block_e4 *sb = sb_info->sb_virt; 1266 struct qedi_percpu_s *p = NULL; 1267 struct global_queue *que; 1268 u16 prod_idx; 1269 unsigned long flags; 1270 union iscsi_cqe *cqe; 1271 int cpu; 1272 int ret; 1273 1274 /* Get the current firmware producer index */ 1275 prod_idx = sb->pi_array[QEDI_PROTO_CQ_PROD_IDX]; 1276 1277 if (prod_idx >= QEDI_CQ_SIZE) 1278 prod_idx = prod_idx % QEDI_CQ_SIZE; 1279 1280 que = qedi->global_queues[fp->sb_id]; 1281 QEDI_INFO(&qedi->dbg_ctx, QEDI_LOG_IO, 1282 "Before: global queue=%p prod_idx=%d cons_idx=%d, sb_id=%d\n", 1283 que, prod_idx, que->cq_cons_idx, fp->sb_id); 1284 1285 qedi->intr_cpu = fp->sb_id; 1286 cpu = smp_processor_id(); 1287 p = &per_cpu(qedi_percpu, cpu); 1288 1289 if (unlikely(!p->iothread)) 1290 WARN_ON(1); 1291 1292 spin_lock_irqsave(&p->p_work_lock, flags); 1293 while (que->cq_cons_idx != prod_idx) { 1294 cqe = &que->cq[que->cq_cons_idx]; 1295 1296 QEDI_INFO(&qedi->dbg_ctx, QEDI_LOG_IO, 1297 "cqe=%p prod_idx=%d cons_idx=%d.\n", 1298 cqe, prod_idx, que->cq_cons_idx); 1299 1300 ret = qedi_queue_cqe(qedi, cqe, fp->sb_id, p); 1301 if (ret) 1302 QEDI_WARN(&qedi->dbg_ctx, 1303 "Dropping CQE 0x%x for cid=0x%x.\n", 1304 que->cq_cons_idx, cqe->cqe_common.conn_id); 1305 1306 que->cq_cons_idx++; 1307 if (que->cq_cons_idx == QEDI_CQ_SIZE) 1308 que->cq_cons_idx = 0; 1309 } 1310 wake_up_process(p->iothread); 1311 spin_unlock_irqrestore(&p->p_work_lock, flags); 1312 1313 return true; 1314} 1315 1316static bool qedi_fp_has_work(struct qedi_fastpath *fp) 1317{ 1318 struct qedi_ctx *qedi = fp->qedi; 1319 struct global_queue *que; 1320 struct qed_sb_info *sb_info = fp->sb_info; 1321 struct status_block_e4 *sb = sb_info->sb_virt; 1322 u16 prod_idx; 1323 1324 barrier(); 1325 1326 /* Get the current firmware producer index */ 1327 prod_idx = sb->pi_array[QEDI_PROTO_CQ_PROD_IDX]; 1328 1329 /* Get the pointer to the global CQ this completion is on */ 1330 que = qedi->global_queues[fp->sb_id]; 1331 1332 /* prod idx wrap around uint16 */ 1333 if (prod_idx >= QEDI_CQ_SIZE) 1334 prod_idx = prod_idx % QEDI_CQ_SIZE; 1335 1336 return (que->cq_cons_idx != prod_idx); 1337} 1338 1339/* MSI-X fastpath handler code */ 1340static irqreturn_t qedi_msix_handler(int irq, void *dev_id) 1341{ 1342 struct qedi_fastpath *fp = dev_id; 1343 struct qedi_ctx *qedi = fp->qedi; 1344 bool wake_io_thread = true; 1345 1346 qed_sb_ack(fp->sb_info, IGU_INT_DISABLE, 0); 1347 1348process_again: 1349 wake_io_thread = qedi_process_completions(fp); 1350 if (wake_io_thread) { 1351 QEDI_INFO(&qedi->dbg_ctx, QEDI_LOG_DISC, 1352 "process already running\n"); 1353 } 1354 1355 if (!qedi_fp_has_work(fp)) 1356 qed_sb_update_sb_idx(fp->sb_info); 1357 1358 /* Check for more work */ 1359 rmb(); 1360 1361 if (!qedi_fp_has_work(fp)) 1362 qed_sb_ack(fp->sb_info, IGU_INT_ENABLE, 1); 1363 else 1364 goto process_again; 1365 1366 return IRQ_HANDLED; 1367} 1368 1369/* simd handler for MSI/INTa */ 1370static void qedi_simd_int_handler(void *cookie) 1371{ 1372 /* Cookie is qedi_ctx struct */ 1373 struct qedi_ctx *qedi = (struct qedi_ctx *)cookie; 1374 1375 QEDI_WARN(&qedi->dbg_ctx, "qedi=%p.\n", qedi); 1376} 1377 1378#define QEDI_SIMD_HANDLER_NUM 0 1379static void qedi_sync_free_irqs(struct qedi_ctx *qedi) 1380{ 1381 int i; 1382 u16 idx; 1383 1384 if (qedi->int_info.msix_cnt) { 1385 for (i = 0; i < qedi->int_info.used_cnt; i++) { 1386 idx = i * qedi->dev_info.common.num_hwfns + 1387 qedi_ops->common->get_affin_hwfn_idx(qedi->cdev); 1388 1389 QEDI_INFO(&qedi->dbg_ctx, QEDI_LOG_INFO, 1390 "Freeing IRQ #%d vector_idx=%d.\n", i, idx); 1391 1392 synchronize_irq(qedi->int_info.msix[idx].vector); 1393 irq_set_affinity_hint(qedi->int_info.msix[idx].vector, 1394 NULL); 1395 free_irq(qedi->int_info.msix[idx].vector, 1396 &qedi->fp_array[i]); 1397 } 1398 } else { 1399 qedi_ops->common->simd_handler_clean(qedi->cdev, 1400 QEDI_SIMD_HANDLER_NUM); 1401 } 1402 1403 qedi->int_info.used_cnt = 0; 1404 qedi_ops->common->set_fp_int(qedi->cdev, 0); 1405} 1406 1407static int qedi_request_msix_irq(struct qedi_ctx *qedi) 1408{ 1409 int i, rc, cpu; 1410 u16 idx; 1411 1412 cpu = cpumask_first(cpu_online_mask); 1413 for (i = 0; i < qedi->msix_count; i++) { 1414 idx = i * qedi->dev_info.common.num_hwfns + 1415 qedi_ops->common->get_affin_hwfn_idx(qedi->cdev); 1416 1417 QEDI_INFO(&qedi->dbg_ctx, QEDI_LOG_INFO, 1418 "dev_info: num_hwfns=%d affin_hwfn_idx=%d.\n", 1419 qedi->dev_info.common.num_hwfns, 1420 qedi_ops->common->get_affin_hwfn_idx(qedi->cdev)); 1421 1422 rc = request_irq(qedi->int_info.msix[idx].vector, 1423 qedi_msix_handler, 0, "qedi", 1424 &qedi->fp_array[i]); 1425 if (rc) { 1426 QEDI_WARN(&qedi->dbg_ctx, "request_irq failed.\n"); 1427 qedi_sync_free_irqs(qedi); 1428 return rc; 1429 } 1430 qedi->int_info.used_cnt++; 1431 rc = irq_set_affinity_hint(qedi->int_info.msix[idx].vector, 1432 get_cpu_mask(cpu)); 1433 cpu = cpumask_next(cpu, cpu_online_mask); 1434 } 1435 1436 return 0; 1437} 1438 1439static int qedi_setup_int(struct qedi_ctx *qedi) 1440{ 1441 int rc = 0; 1442 1443 rc = qedi_ops->common->set_fp_int(qedi->cdev, qedi->num_queues); 1444 if (rc < 0) 1445 goto exit_setup_int; 1446 1447 qedi->msix_count = rc; 1448 1449 rc = qedi_ops->common->get_fp_int(qedi->cdev, &qedi->int_info); 1450 if (rc) 1451 goto exit_setup_int; 1452 1453 QEDI_INFO(&qedi->dbg_ctx, QEDI_LOG_DISC, 1454 "Number of msix_cnt = 0x%x num of cpus = 0x%x\n", 1455 qedi->int_info.msix_cnt, num_online_cpus()); 1456 1457 if (qedi->int_info.msix_cnt) { 1458 rc = qedi_request_msix_irq(qedi); 1459 goto exit_setup_int; 1460 } else { 1461 qedi_ops->common->simd_handler_config(qedi->cdev, &qedi, 1462 QEDI_SIMD_HANDLER_NUM, 1463 qedi_simd_int_handler); 1464 qedi->int_info.used_cnt = 1; 1465 } 1466 1467exit_setup_int: 1468 return rc; 1469} 1470 1471static void qedi_free_nvm_iscsi_cfg(struct qedi_ctx *qedi) 1472{ 1473 if (qedi->iscsi_image) 1474 dma_free_coherent(&qedi->pdev->dev, 1475 sizeof(struct qedi_nvm_iscsi_image), 1476 qedi->iscsi_image, qedi->nvm_buf_dma); 1477} 1478 1479static int qedi_alloc_nvm_iscsi_cfg(struct qedi_ctx *qedi) 1480{ 1481 qedi->iscsi_image = dma_alloc_coherent(&qedi->pdev->dev, 1482 sizeof(struct qedi_nvm_iscsi_image), 1483 &qedi->nvm_buf_dma, GFP_KERNEL); 1484 if (!qedi->iscsi_image) { 1485 QEDI_ERR(&qedi->dbg_ctx, "Could not allocate NVM BUF.\n"); 1486 return -ENOMEM; 1487 } 1488 QEDI_INFO(&qedi->dbg_ctx, QEDI_LOG_INFO, 1489 "NVM BUF addr=0x%p dma=0x%llx.\n", qedi->iscsi_image, 1490 qedi->nvm_buf_dma); 1491 1492 return 0; 1493} 1494 1495static void qedi_free_bdq(struct qedi_ctx *qedi) 1496{ 1497 int i; 1498 1499 if (qedi->bdq_pbl_list) 1500 dma_free_coherent(&qedi->pdev->dev, QEDI_PAGE_SIZE, 1501 qedi->bdq_pbl_list, qedi->bdq_pbl_list_dma); 1502 1503 if (qedi->bdq_pbl) 1504 dma_free_coherent(&qedi->pdev->dev, qedi->bdq_pbl_mem_size, 1505 qedi->bdq_pbl, qedi->bdq_pbl_dma); 1506 1507 for (i = 0; i < QEDI_BDQ_NUM; i++) { 1508 if (qedi->bdq[i].buf_addr) { 1509 dma_free_coherent(&qedi->pdev->dev, QEDI_BDQ_BUF_SIZE, 1510 qedi->bdq[i].buf_addr, 1511 qedi->bdq[i].buf_dma); 1512 } 1513 } 1514} 1515 1516static void qedi_free_global_queues(struct qedi_ctx *qedi) 1517{ 1518 int i; 1519 struct global_queue **gl = qedi->global_queues; 1520 1521 for (i = 0; i < qedi->num_queues; i++) { 1522 if (!gl[i]) 1523 continue; 1524 1525 if (gl[i]->cq) 1526 dma_free_coherent(&qedi->pdev->dev, gl[i]->cq_mem_size, 1527 gl[i]->cq, gl[i]->cq_dma); 1528 if (gl[i]->cq_pbl) 1529 dma_free_coherent(&qedi->pdev->dev, gl[i]->cq_pbl_size, 1530 gl[i]->cq_pbl, gl[i]->cq_pbl_dma); 1531 1532 kfree(gl[i]); 1533 } 1534 qedi_free_bdq(qedi); 1535 qedi_free_nvm_iscsi_cfg(qedi); 1536} 1537 1538static int qedi_alloc_bdq(struct qedi_ctx *qedi) 1539{ 1540 int i; 1541 struct scsi_bd *pbl; 1542 u64 *list; 1543 dma_addr_t page; 1544 1545 /* Alloc dma memory for BDQ buffers */ 1546 for (i = 0; i < QEDI_BDQ_NUM; i++) { 1547 qedi->bdq[i].buf_addr = 1548 dma_alloc_coherent(&qedi->pdev->dev, 1549 QEDI_BDQ_BUF_SIZE, 1550 &qedi->bdq[i].buf_dma, 1551 GFP_KERNEL); 1552 if (!qedi->bdq[i].buf_addr) { 1553 QEDI_ERR(&qedi->dbg_ctx, 1554 "Could not allocate BDQ buffer %d.\n", i); 1555 return -ENOMEM; 1556 } 1557 } 1558 1559 /* Alloc dma memory for BDQ page buffer list */ 1560 qedi->bdq_pbl_mem_size = QEDI_BDQ_NUM * sizeof(struct scsi_bd); 1561 qedi->bdq_pbl_mem_size = ALIGN(qedi->bdq_pbl_mem_size, QEDI_PAGE_SIZE); 1562 qedi->rq_num_entries = qedi->bdq_pbl_mem_size / sizeof(struct scsi_bd); 1563 1564 QEDI_INFO(&qedi->dbg_ctx, QEDI_LOG_CONN, "rq_num_entries = %d.\n", 1565 qedi->rq_num_entries); 1566 1567 qedi->bdq_pbl = dma_alloc_coherent(&qedi->pdev->dev, 1568 qedi->bdq_pbl_mem_size, 1569 &qedi->bdq_pbl_dma, GFP_KERNEL); 1570 if (!qedi->bdq_pbl) { 1571 QEDI_ERR(&qedi->dbg_ctx, "Could not allocate BDQ PBL.\n"); 1572 return -ENOMEM; 1573 } 1574 1575 /* 1576 * Populate BDQ PBL with physical and virtual address of individual 1577 * BDQ buffers 1578 */ 1579 pbl = (struct scsi_bd *)qedi->bdq_pbl; 1580 for (i = 0; i < QEDI_BDQ_NUM; i++) { 1581 pbl->address.hi = 1582 cpu_to_le32(QEDI_U64_HI(qedi->bdq[i].buf_dma)); 1583 pbl->address.lo = 1584 cpu_to_le32(QEDI_U64_LO(qedi->bdq[i].buf_dma)); 1585 QEDI_INFO(&qedi->dbg_ctx, QEDI_LOG_CONN, 1586 "pbl [0x%p] pbl->address hi [0x%llx] lo [0x%llx], idx [%d]\n", 1587 pbl, pbl->address.hi, pbl->address.lo, i); 1588 pbl->opaque.iscsi_opaque.reserved_zero[0] = 0; 1589 pbl->opaque.iscsi_opaque.reserved_zero[1] = 0; 1590 pbl->opaque.iscsi_opaque.reserved_zero[2] = 0; 1591 pbl->opaque.iscsi_opaque.opaque = cpu_to_le16(i); 1592 pbl++; 1593 } 1594 1595 /* Allocate list of PBL pages */ 1596 qedi->bdq_pbl_list = dma_alloc_coherent(&qedi->pdev->dev, 1597 QEDI_PAGE_SIZE, 1598 &qedi->bdq_pbl_list_dma, 1599 GFP_KERNEL); 1600 if (!qedi->bdq_pbl_list) { 1601 QEDI_ERR(&qedi->dbg_ctx, 1602 "Could not allocate list of PBL pages.\n"); 1603 return -ENOMEM; 1604 } 1605 1606 /* 1607 * Now populate PBL list with pages that contain pointers to the 1608 * individual buffers. 1609 */ 1610 qedi->bdq_pbl_list_num_entries = qedi->bdq_pbl_mem_size / 1611 QEDI_PAGE_SIZE; 1612 list = (u64 *)qedi->bdq_pbl_list; 1613 page = qedi->bdq_pbl_list_dma; 1614 for (i = 0; i < qedi->bdq_pbl_list_num_entries; i++) { 1615 *list = qedi->bdq_pbl_dma; 1616 list++; 1617 page += QEDI_PAGE_SIZE; 1618 } 1619 1620 return 0; 1621} 1622 1623static int qedi_alloc_global_queues(struct qedi_ctx *qedi) 1624{ 1625 u32 *list; 1626 int i; 1627 int status; 1628 u32 *pbl; 1629 dma_addr_t page; 1630 int num_pages; 1631 1632 /* 1633 * Number of global queues (CQ / RQ). This should 1634 * be <= number of available MSIX vectors for the PF 1635 */ 1636 if (!qedi->num_queues) { 1637 QEDI_ERR(&qedi->dbg_ctx, "No MSI-X vectors available!\n"); 1638 return -ENOMEM; 1639 } 1640 1641 /* Make sure we allocated the PBL that will contain the physical 1642 * addresses of our queues 1643 */ 1644 if (!qedi->p_cpuq) { 1645 status = -EINVAL; 1646 goto mem_alloc_failure; 1647 } 1648 1649 qedi->global_queues = kzalloc((sizeof(struct global_queue *) * 1650 qedi->num_queues), GFP_KERNEL); 1651 if (!qedi->global_queues) { 1652 QEDI_ERR(&qedi->dbg_ctx, 1653 "Unable to allocate global queues array ptr memory\n"); 1654 return -ENOMEM; 1655 } 1656 QEDI_INFO(&qedi->dbg_ctx, QEDI_LOG_DISC, 1657 "qedi->global_queues=%p.\n", qedi->global_queues); 1658 1659 /* Allocate DMA coherent buffers for BDQ */ 1660 status = qedi_alloc_bdq(qedi); 1661 if (status) 1662 goto mem_alloc_failure; 1663 1664 /* Allocate DMA coherent buffers for NVM_ISCSI_CFG */ 1665 status = qedi_alloc_nvm_iscsi_cfg(qedi); 1666 if (status) 1667 goto mem_alloc_failure; 1668 1669 /* Allocate a CQ and an associated PBL for each MSI-X 1670 * vector. 1671 */ 1672 for (i = 0; i < qedi->num_queues; i++) { 1673 qedi->global_queues[i] = 1674 kzalloc(sizeof(*qedi->global_queues[0]), 1675 GFP_KERNEL); 1676 if (!qedi->global_queues[i]) { 1677 QEDI_ERR(&qedi->dbg_ctx, 1678 "Unable to allocation global queue %d.\n", i); 1679 status = -ENOMEM; 1680 goto mem_alloc_failure; 1681 } 1682 1683 qedi->global_queues[i]->cq_mem_size = 1684 (QEDI_CQ_SIZE + 8) * sizeof(union iscsi_cqe); 1685 qedi->global_queues[i]->cq_mem_size = 1686 (qedi->global_queues[i]->cq_mem_size + 1687 (QEDI_PAGE_SIZE - 1)); 1688 1689 qedi->global_queues[i]->cq_pbl_size = 1690 (qedi->global_queues[i]->cq_mem_size / 1691 QEDI_PAGE_SIZE) * sizeof(void *); 1692 qedi->global_queues[i]->cq_pbl_size = 1693 (qedi->global_queues[i]->cq_pbl_size + 1694 (QEDI_PAGE_SIZE - 1)); 1695 1696 qedi->global_queues[i]->cq = dma_alloc_coherent(&qedi->pdev->dev, 1697 qedi->global_queues[i]->cq_mem_size, 1698 &qedi->global_queues[i]->cq_dma, 1699 GFP_KERNEL); 1700 1701 if (!qedi->global_queues[i]->cq) { 1702 QEDI_WARN(&qedi->dbg_ctx, 1703 "Could not allocate cq.\n"); 1704 status = -ENOMEM; 1705 goto mem_alloc_failure; 1706 } 1707 qedi->global_queues[i]->cq_pbl = dma_alloc_coherent(&qedi->pdev->dev, 1708 qedi->global_queues[i]->cq_pbl_size, 1709 &qedi->global_queues[i]->cq_pbl_dma, 1710 GFP_KERNEL); 1711 1712 if (!qedi->global_queues[i]->cq_pbl) { 1713 QEDI_WARN(&qedi->dbg_ctx, 1714 "Could not allocate cq PBL.\n"); 1715 status = -ENOMEM; 1716 goto mem_alloc_failure; 1717 } 1718 1719 /* Create PBL */ 1720 num_pages = qedi->global_queues[i]->cq_mem_size / 1721 QEDI_PAGE_SIZE; 1722 page = qedi->global_queues[i]->cq_dma; 1723 pbl = (u32 *)qedi->global_queues[i]->cq_pbl; 1724 1725 while (num_pages--) { 1726 *pbl = (u32)page; 1727 pbl++; 1728 *pbl = (u32)((u64)page >> 32); 1729 pbl++; 1730 page += QEDI_PAGE_SIZE; 1731 } 1732 } 1733 1734 list = (u32 *)qedi->p_cpuq; 1735 1736 /* 1737 * The list is built as follows: CQ#0 PBL pointer, RQ#0 PBL pointer, 1738 * CQ#1 PBL pointer, RQ#1 PBL pointer, etc. Each PBL pointer points 1739 * to the physical address which contains an array of pointers to the 1740 * physical addresses of the specific queue pages. 1741 */ 1742 for (i = 0; i < qedi->num_queues; i++) { 1743 *list = (u32)qedi->global_queues[i]->cq_pbl_dma; 1744 list++; 1745 *list = (u32)((u64)qedi->global_queues[i]->cq_pbl_dma >> 32); 1746 list++; 1747 1748 *list = (u32)0; 1749 list++; 1750 *list = (u32)((u64)0 >> 32); 1751 list++; 1752 } 1753 1754 return 0; 1755 1756mem_alloc_failure: 1757 qedi_free_global_queues(qedi); 1758 return status; 1759} 1760 1761int qedi_alloc_sq(struct qedi_ctx *qedi, struct qedi_endpoint *ep) 1762{ 1763 int rval = 0; 1764 u32 *pbl; 1765 dma_addr_t page; 1766 int num_pages; 1767 1768 if (!ep) 1769 return -EIO; 1770 1771 /* Calculate appropriate queue and PBL sizes */ 1772 ep->sq_mem_size = QEDI_SQ_SIZE * sizeof(struct iscsi_wqe); 1773 ep->sq_mem_size += QEDI_PAGE_SIZE - 1; 1774 1775 ep->sq_pbl_size = (ep->sq_mem_size / QEDI_PAGE_SIZE) * sizeof(void *); 1776 ep->sq_pbl_size = ep->sq_pbl_size + QEDI_PAGE_SIZE; 1777 1778 ep->sq = dma_alloc_coherent(&qedi->pdev->dev, ep->sq_mem_size, 1779 &ep->sq_dma, GFP_KERNEL); 1780 if (!ep->sq) { 1781 QEDI_WARN(&qedi->dbg_ctx, 1782 "Could not allocate send queue.\n"); 1783 rval = -ENOMEM; 1784 goto out; 1785 } 1786 ep->sq_pbl = dma_alloc_coherent(&qedi->pdev->dev, ep->sq_pbl_size, 1787 &ep->sq_pbl_dma, GFP_KERNEL); 1788 if (!ep->sq_pbl) { 1789 QEDI_WARN(&qedi->dbg_ctx, 1790 "Could not allocate send queue PBL.\n"); 1791 rval = -ENOMEM; 1792 goto out_free_sq; 1793 } 1794 1795 /* Create PBL */ 1796 num_pages = ep->sq_mem_size / QEDI_PAGE_SIZE; 1797 page = ep->sq_dma; 1798 pbl = (u32 *)ep->sq_pbl; 1799 1800 while (num_pages--) { 1801 *pbl = (u32)page; 1802 pbl++; 1803 *pbl = (u32)((u64)page >> 32); 1804 pbl++; 1805 page += QEDI_PAGE_SIZE; 1806 } 1807 1808 return rval; 1809 1810out_free_sq: 1811 dma_free_coherent(&qedi->pdev->dev, ep->sq_mem_size, ep->sq, 1812 ep->sq_dma); 1813out: 1814 return rval; 1815} 1816 1817void qedi_free_sq(struct qedi_ctx *qedi, struct qedi_endpoint *ep) 1818{ 1819 if (ep->sq_pbl) 1820 dma_free_coherent(&qedi->pdev->dev, ep->sq_pbl_size, ep->sq_pbl, 1821 ep->sq_pbl_dma); 1822 if (ep->sq) 1823 dma_free_coherent(&qedi->pdev->dev, ep->sq_mem_size, ep->sq, 1824 ep->sq_dma); 1825} 1826 1827int qedi_get_task_idx(struct qedi_ctx *qedi) 1828{ 1829 s16 tmp_idx; 1830 1831again: 1832 tmp_idx = find_first_zero_bit(qedi->task_idx_map, 1833 MAX_ISCSI_TASK_ENTRIES); 1834 1835 if (tmp_idx >= MAX_ISCSI_TASK_ENTRIES) { 1836 QEDI_ERR(&qedi->dbg_ctx, "FW task context pool is full.\n"); 1837 tmp_idx = -1; 1838 goto err_idx; 1839 } 1840 1841 if (test_and_set_bit(tmp_idx, qedi->task_idx_map)) 1842 goto again; 1843 1844err_idx: 1845 return tmp_idx; 1846} 1847 1848void qedi_clear_task_idx(struct qedi_ctx *qedi, int idx) 1849{ 1850 if (!test_and_clear_bit(idx, qedi->task_idx_map)) 1851 QEDI_ERR(&qedi->dbg_ctx, 1852 "FW task context, already cleared, tid=0x%x\n", idx); 1853} 1854 1855void qedi_update_itt_map(struct qedi_ctx *qedi, u32 tid, u32 proto_itt, 1856 struct qedi_cmd *cmd) 1857{ 1858 qedi->itt_map[tid].itt = proto_itt; 1859 qedi->itt_map[tid].p_cmd = cmd; 1860 1861 QEDI_INFO(&qedi->dbg_ctx, QEDI_LOG_CONN, 1862 "update itt map tid=0x%x, with proto itt=0x%x\n", tid, 1863 qedi->itt_map[tid].itt); 1864} 1865 1866void qedi_get_task_tid(struct qedi_ctx *qedi, u32 itt, s16 *tid) 1867{ 1868 u16 i; 1869 1870 for (i = 0; i < MAX_ISCSI_TASK_ENTRIES; i++) { 1871 if (qedi->itt_map[i].itt == itt) { 1872 *tid = i; 1873 QEDI_INFO(&qedi->dbg_ctx, QEDI_LOG_CONN, 1874 "Ref itt=0x%x, found at tid=0x%x\n", 1875 itt, *tid); 1876 return; 1877 } 1878 } 1879 1880 WARN_ON(1); 1881} 1882 1883void qedi_get_proto_itt(struct qedi_ctx *qedi, u32 tid, u32 *proto_itt) 1884{ 1885 *proto_itt = qedi->itt_map[tid].itt; 1886 QEDI_INFO(&qedi->dbg_ctx, QEDI_LOG_CONN, 1887 "Get itt map tid [0x%x with proto itt[0x%x]", 1888 tid, *proto_itt); 1889} 1890 1891struct qedi_cmd *qedi_get_cmd_from_tid(struct qedi_ctx *qedi, u32 tid) 1892{ 1893 struct qedi_cmd *cmd = NULL; 1894 1895 if (tid >= MAX_ISCSI_TASK_ENTRIES) 1896 return NULL; 1897 1898 cmd = qedi->itt_map[tid].p_cmd; 1899 if (cmd->task_id != tid) 1900 return NULL; 1901 1902 qedi->itt_map[tid].p_cmd = NULL; 1903 1904 return cmd; 1905} 1906 1907static int qedi_alloc_itt(struct qedi_ctx *qedi) 1908{ 1909 qedi->itt_map = kcalloc(MAX_ISCSI_TASK_ENTRIES, 1910 sizeof(struct qedi_itt_map), GFP_KERNEL); 1911 if (!qedi->itt_map) { 1912 QEDI_ERR(&qedi->dbg_ctx, 1913 "Unable to allocate itt map array memory\n"); 1914 return -ENOMEM; 1915 } 1916 return 0; 1917} 1918 1919static void qedi_free_itt(struct qedi_ctx *qedi) 1920{ 1921 kfree(qedi->itt_map); 1922} 1923 1924static struct qed_ll2_cb_ops qedi_ll2_cb_ops = { 1925 .rx_cb = qedi_ll2_rx, 1926 .tx_cb = NULL, 1927}; 1928 1929static int qedi_percpu_io_thread(void *arg) 1930{ 1931 struct qedi_percpu_s *p = arg; 1932 struct qedi_work *work, *tmp; 1933 unsigned long flags; 1934 LIST_HEAD(work_list); 1935 1936 set_user_nice(current, -20); 1937 1938 while (!kthread_should_stop()) { 1939 spin_lock_irqsave(&p->p_work_lock, flags); 1940 while (!list_empty(&p->work_list)) { 1941 list_splice_init(&p->work_list, &work_list); 1942 spin_unlock_irqrestore(&p->p_work_lock, flags); 1943 1944 list_for_each_entry_safe(work, tmp, &work_list, list) { 1945 list_del_init(&work->list); 1946 qedi_fp_process_cqes(work); 1947 if (!work->is_solicited) 1948 kfree(work); 1949 } 1950 cond_resched(); 1951 spin_lock_irqsave(&p->p_work_lock, flags); 1952 } 1953 set_current_state(TASK_INTERRUPTIBLE); 1954 spin_unlock_irqrestore(&p->p_work_lock, flags); 1955 schedule(); 1956 } 1957 __set_current_state(TASK_RUNNING); 1958 1959 return 0; 1960} 1961 1962static int qedi_cpu_online(unsigned int cpu) 1963{ 1964 struct qedi_percpu_s *p = this_cpu_ptr(&qedi_percpu); 1965 struct task_struct *thread; 1966 1967 thread = kthread_create_on_node(qedi_percpu_io_thread, (void *)p, 1968 cpu_to_node(cpu), 1969 "qedi_thread/%d", cpu); 1970 if (IS_ERR(thread)) 1971 return PTR_ERR(thread); 1972 1973 kthread_bind(thread, cpu); 1974 p->iothread = thread; 1975 wake_up_process(thread); 1976 return 0; 1977} 1978 1979static int qedi_cpu_offline(unsigned int cpu) 1980{ 1981 struct qedi_percpu_s *p = this_cpu_ptr(&qedi_percpu); 1982 struct qedi_work *work, *tmp; 1983 struct task_struct *thread; 1984 unsigned long flags; 1985 1986 spin_lock_irqsave(&p->p_work_lock, flags); 1987 thread = p->iothread; 1988 p->iothread = NULL; 1989 1990 list_for_each_entry_safe(work, tmp, &p->work_list, list) { 1991 list_del_init(&work->list); 1992 qedi_fp_process_cqes(work); 1993 if (!work->is_solicited) 1994 kfree(work); 1995 } 1996 1997 spin_unlock_irqrestore(&p->p_work_lock, flags); 1998 if (thread) 1999 kthread_stop(thread); 2000 return 0; 2001} 2002 2003void qedi_reset_host_mtu(struct qedi_ctx *qedi, u16 mtu) 2004{ 2005 struct qed_ll2_params params; 2006 2007 qedi_recover_all_conns(qedi); 2008 2009 qedi_ops->ll2->stop(qedi->cdev); 2010 qedi_ll2_free_skbs(qedi); 2011 2012 QEDI_INFO(&qedi->dbg_ctx, QEDI_LOG_INFO, "old MTU %u, new MTU %u\n", 2013 qedi->ll2_mtu, mtu); 2014 memset(¶ms, 0, sizeof(params)); 2015 qedi->ll2_mtu = mtu; 2016 params.mtu = qedi->ll2_mtu + IPV6_HDR_LEN + TCP_HDR_LEN; 2017 params.drop_ttl0_packets = 0; 2018 params.rx_vlan_stripping = 1; 2019 ether_addr_copy(params.ll2_mac_address, qedi->dev_info.common.hw_mac); 2020 qedi_ops->ll2->start(qedi->cdev, ¶ms); 2021} 2022 2023/* 2024 * qedi_get_nvram_block: - Scan through the iSCSI NVRAM block (while accounting 2025 * for gaps) for the matching absolute-pf-id of the QEDI device. 2026 */ 2027static struct nvm_iscsi_block * 2028qedi_get_nvram_block(struct qedi_ctx *qedi) 2029{ 2030 int i; 2031 u8 pf; 2032 u32 flags; 2033 struct nvm_iscsi_block *block; 2034 2035 pf = qedi->dev_info.common.abs_pf_id; 2036 block = &qedi->iscsi_image->iscsi_cfg.block[0]; 2037 for (i = 0; i < NUM_OF_ISCSI_PF_SUPPORTED; i++, block++) { 2038 flags = ((block->id) & NVM_ISCSI_CFG_BLK_CTRL_FLAG_MASK) >> 2039 NVM_ISCSI_CFG_BLK_CTRL_FLAG_OFFSET; 2040 if (flags & (NVM_ISCSI_CFG_BLK_CTRL_FLAG_IS_NOT_EMPTY | 2041 NVM_ISCSI_CFG_BLK_CTRL_FLAG_PF_MAPPED) && 2042 (pf == (block->id & NVM_ISCSI_CFG_BLK_MAPPED_PF_ID_MASK) 2043 >> NVM_ISCSI_CFG_BLK_MAPPED_PF_ID_OFFSET)) 2044 return block; 2045 } 2046 return NULL; 2047} 2048 2049static ssize_t qedi_show_boot_eth_info(void *data, int type, char *buf) 2050{ 2051 struct qedi_ctx *qedi = data; 2052 struct nvm_iscsi_initiator *initiator; 2053 int rc = 1; 2054 u32 ipv6_en, dhcp_en, ip_len; 2055 struct nvm_iscsi_block *block; 2056 char *fmt, *ip, *sub, *gw; 2057 2058 block = qedi_get_nvram_block(qedi); 2059 if (!block) 2060 return 0; 2061 2062 initiator = &block->initiator; 2063 ipv6_en = block->generic.ctrl_flags & 2064 NVM_ISCSI_CFG_GEN_IPV6_ENABLED; 2065 dhcp_en = block->generic.ctrl_flags & 2066 NVM_ISCSI_CFG_GEN_DHCP_TCPIP_CONFIG_ENABLED; 2067 /* Static IP assignments. */ 2068 fmt = ipv6_en ? "%pI6\n" : "%pI4\n"; 2069 ip = ipv6_en ? initiator->ipv6.addr.byte : initiator->ipv4.addr.byte; 2070 ip_len = ipv6_en ? IPV6_LEN : IPV4_LEN; 2071 sub = ipv6_en ? initiator->ipv6.subnet_mask.byte : 2072 initiator->ipv4.subnet_mask.byte; 2073 gw = ipv6_en ? initiator->ipv6.gateway.byte : 2074 initiator->ipv4.gateway.byte; 2075 /* DHCP IP adjustments. */ 2076 fmt = dhcp_en ? "%s\n" : fmt; 2077 if (dhcp_en) { 2078 ip = ipv6_en ? "0::0" : "0.0.0.0"; 2079 sub = ip; 2080 gw = ip; 2081 ip_len = ipv6_en ? 5 : 8; 2082 } 2083 2084 switch (type) { 2085 case ISCSI_BOOT_ETH_IP_ADDR: 2086 rc = snprintf(buf, ip_len, fmt, ip); 2087 break; 2088 case ISCSI_BOOT_ETH_SUBNET_MASK: 2089 rc = snprintf(buf, ip_len, fmt, sub); 2090 break; 2091 case ISCSI_BOOT_ETH_GATEWAY: 2092 rc = snprintf(buf, ip_len, fmt, gw); 2093 break; 2094 case ISCSI_BOOT_ETH_FLAGS: 2095 rc = snprintf(buf, 3, "%hhd\n", 2096 SYSFS_FLAG_FW_SEL_BOOT); 2097 break; 2098 case ISCSI_BOOT_ETH_INDEX: 2099 rc = snprintf(buf, 3, "0\n"); 2100 break; 2101 case ISCSI_BOOT_ETH_MAC: 2102 rc = sysfs_format_mac(buf, qedi->mac, ETH_ALEN); 2103 break; 2104 case ISCSI_BOOT_ETH_VLAN: 2105 rc = snprintf(buf, 12, "%d\n", 2106 GET_FIELD2(initiator->generic_cont0, 2107 NVM_ISCSI_CFG_INITIATOR_VLAN)); 2108 break; 2109 case ISCSI_BOOT_ETH_ORIGIN: 2110 if (dhcp_en) 2111 rc = snprintf(buf, 3, "3\n"); 2112 break; 2113 default: 2114 rc = 0; 2115 break; 2116 } 2117 2118 return rc; 2119} 2120 2121static umode_t qedi_eth_get_attr_visibility(void *data, int type) 2122{ 2123 int rc = 1; 2124 2125 switch (type) { 2126 case ISCSI_BOOT_ETH_FLAGS: 2127 case ISCSI_BOOT_ETH_MAC: 2128 case ISCSI_BOOT_ETH_INDEX: 2129 case ISCSI_BOOT_ETH_IP_ADDR: 2130 case ISCSI_BOOT_ETH_SUBNET_MASK: 2131 case ISCSI_BOOT_ETH_GATEWAY: 2132 case ISCSI_BOOT_ETH_ORIGIN: 2133 case ISCSI_BOOT_ETH_VLAN: 2134 rc = 0444; 2135 break; 2136 default: 2137 rc = 0; 2138 break; 2139 } 2140 return rc; 2141} 2142 2143static ssize_t qedi_show_boot_ini_info(void *data, int type, char *buf) 2144{ 2145 struct qedi_ctx *qedi = data; 2146 struct nvm_iscsi_initiator *initiator; 2147 int rc; 2148 struct nvm_iscsi_block *block; 2149 2150 block = qedi_get_nvram_block(qedi); 2151 if (!block) 2152 return 0; 2153 2154 initiator = &block->initiator; 2155 2156 switch (type) { 2157 case ISCSI_BOOT_INI_INITIATOR_NAME: 2158 rc = sprintf(buf, "%.*s\n", NVM_ISCSI_CFG_ISCSI_NAME_MAX_LEN, 2159 initiator->initiator_name.byte); 2160 break; 2161 default: 2162 rc = 0; 2163 break; 2164 } 2165 return rc; 2166} 2167 2168static umode_t qedi_ini_get_attr_visibility(void *data, int type) 2169{ 2170 int rc; 2171 2172 switch (type) { 2173 case ISCSI_BOOT_INI_INITIATOR_NAME: 2174 rc = 0444; 2175 break; 2176 default: 2177 rc = 0; 2178 break; 2179 } 2180 return rc; 2181} 2182 2183static ssize_t 2184qedi_show_boot_tgt_info(struct qedi_ctx *qedi, int type, 2185 char *buf, enum qedi_nvm_tgts idx) 2186{ 2187 int rc = 1; 2188 u32 ctrl_flags, ipv6_en, chap_en, mchap_en, ip_len; 2189 struct nvm_iscsi_block *block; 2190 char *chap_name, *chap_secret; 2191 char *mchap_name, *mchap_secret; 2192 2193 block = qedi_get_nvram_block(qedi); 2194 if (!block) 2195 goto exit_show_tgt_info; 2196 2197 QEDI_INFO(&qedi->dbg_ctx, QEDI_LOG_EVT, 2198 "Port:%d, tgt_idx:%d\n", 2199 GET_FIELD2(block->id, NVM_ISCSI_CFG_BLK_MAPPED_PF_ID), idx); 2200 2201 ctrl_flags = block->target[idx].ctrl_flags & 2202 NVM_ISCSI_CFG_TARGET_ENABLED; 2203 2204 if (!ctrl_flags) { 2205 QEDI_INFO(&qedi->dbg_ctx, QEDI_LOG_EVT, 2206 "Target disabled\n"); 2207 goto exit_show_tgt_info; 2208 } 2209 2210 ipv6_en = block->generic.ctrl_flags & 2211 NVM_ISCSI_CFG_GEN_IPV6_ENABLED; 2212 ip_len = ipv6_en ? IPV6_LEN : IPV4_LEN; 2213 chap_en = block->generic.ctrl_flags & 2214 NVM_ISCSI_CFG_GEN_CHAP_ENABLED; 2215 chap_name = chap_en ? block->initiator.chap_name.byte : NULL; 2216 chap_secret = chap_en ? block->initiator.chap_password.byte : NULL; 2217 2218 mchap_en = block->generic.ctrl_flags & 2219 NVM_ISCSI_CFG_GEN_CHAP_MUTUAL_ENABLED; 2220 mchap_name = mchap_en ? block->target[idx].chap_name.byte : NULL; 2221 mchap_secret = mchap_en ? block->target[idx].chap_password.byte : NULL; 2222 2223 switch (type) { 2224 case ISCSI_BOOT_TGT_NAME: 2225 rc = sprintf(buf, "%.*s\n", NVM_ISCSI_CFG_ISCSI_NAME_MAX_LEN, 2226 block->target[idx].target_name.byte); 2227 break; 2228 case ISCSI_BOOT_TGT_IP_ADDR: 2229 if (ipv6_en) 2230 rc = snprintf(buf, ip_len, "%pI6\n", 2231 block->target[idx].ipv6_addr.byte); 2232 else 2233 rc = snprintf(buf, ip_len, "%pI4\n", 2234 block->target[idx].ipv4_addr.byte); 2235 break; 2236 case ISCSI_BOOT_TGT_PORT: 2237 rc = snprintf(buf, 12, "%d\n", 2238 GET_FIELD2(block->target[idx].generic_cont0, 2239 NVM_ISCSI_CFG_TARGET_TCP_PORT)); 2240 break; 2241 case ISCSI_BOOT_TGT_LUN: 2242 rc = snprintf(buf, 22, "%.*d\n", 2243 block->target[idx].lun.value[1], 2244 block->target[idx].lun.value[0]); 2245 break; 2246 case ISCSI_BOOT_TGT_CHAP_NAME: 2247 rc = sprintf(buf, "%.*s\n", NVM_ISCSI_CFG_CHAP_NAME_MAX_LEN, 2248 chap_name); 2249 break; 2250 case ISCSI_BOOT_TGT_CHAP_SECRET: 2251 rc = sprintf(buf, "%.*s\n", NVM_ISCSI_CFG_CHAP_PWD_MAX_LEN, 2252 chap_secret); 2253 break; 2254 case ISCSI_BOOT_TGT_REV_CHAP_NAME: 2255 rc = sprintf(buf, "%.*s\n", NVM_ISCSI_CFG_CHAP_NAME_MAX_LEN, 2256 mchap_name); 2257 break; 2258 case ISCSI_BOOT_TGT_REV_CHAP_SECRET: 2259 rc = sprintf(buf, "%.*s\n", NVM_ISCSI_CFG_CHAP_PWD_MAX_LEN, 2260 mchap_secret); 2261 break; 2262 case ISCSI_BOOT_TGT_FLAGS: 2263 rc = snprintf(buf, 3, "%hhd\n", SYSFS_FLAG_FW_SEL_BOOT); 2264 break; 2265 case ISCSI_BOOT_TGT_NIC_ASSOC: 2266 rc = snprintf(buf, 3, "0\n"); 2267 break; 2268 default: 2269 rc = 0; 2270 break; 2271 } 2272 2273exit_show_tgt_info: 2274 return rc; 2275} 2276 2277static ssize_t qedi_show_boot_tgt_pri_info(void *data, int type, char *buf) 2278{ 2279 struct qedi_ctx *qedi = data; 2280 2281 return qedi_show_boot_tgt_info(qedi, type, buf, QEDI_NVM_TGT_PRI); 2282} 2283 2284static ssize_t qedi_show_boot_tgt_sec_info(void *data, int type, char *buf) 2285{ 2286 struct qedi_ctx *qedi = data; 2287 2288 return qedi_show_boot_tgt_info(qedi, type, buf, QEDI_NVM_TGT_SEC); 2289} 2290 2291static umode_t qedi_tgt_get_attr_visibility(void *data, int type) 2292{ 2293 int rc; 2294 2295 switch (type) { 2296 case ISCSI_BOOT_TGT_NAME: 2297 case ISCSI_BOOT_TGT_IP_ADDR: 2298 case ISCSI_BOOT_TGT_PORT: 2299 case ISCSI_BOOT_TGT_LUN: 2300 case ISCSI_BOOT_TGT_CHAP_NAME: 2301 case ISCSI_BOOT_TGT_CHAP_SECRET: 2302 case ISCSI_BOOT_TGT_REV_CHAP_NAME: 2303 case ISCSI_BOOT_TGT_REV_CHAP_SECRET: 2304 case ISCSI_BOOT_TGT_NIC_ASSOC: 2305 case ISCSI_BOOT_TGT_FLAGS: 2306 rc = 0444; 2307 break; 2308 default: 2309 rc = 0; 2310 break; 2311 } 2312 return rc; 2313} 2314 2315static void qedi_boot_release(void *data) 2316{ 2317 struct qedi_ctx *qedi = data; 2318 2319 scsi_host_put(qedi->shost); 2320} 2321 2322static int qedi_get_boot_info(struct qedi_ctx *qedi) 2323{ 2324 int ret = 1; 2325 2326 QEDI_INFO(&qedi->dbg_ctx, QEDI_LOG_INFO, 2327 "Get NVM iSCSI CFG image\n"); 2328 ret = qedi_ops->common->nvm_get_image(qedi->cdev, 2329 QED_NVM_IMAGE_ISCSI_CFG, 2330 (char *)qedi->iscsi_image, 2331 sizeof(struct qedi_nvm_iscsi_image)); 2332 if (ret) 2333 QEDI_ERR(&qedi->dbg_ctx, 2334 "Could not get NVM image. ret = %d\n", ret); 2335 2336 return ret; 2337} 2338 2339static int qedi_setup_boot_info(struct qedi_ctx *qedi) 2340{ 2341 struct iscsi_boot_kobj *boot_kobj; 2342 2343 if (qedi_get_boot_info(qedi)) 2344 return -EPERM; 2345 2346 qedi->boot_kset = iscsi_boot_create_host_kset(qedi->shost->host_no); 2347 if (!qedi->boot_kset) 2348 goto kset_free; 2349 2350 if (!scsi_host_get(qedi->shost)) 2351 goto kset_free; 2352 2353 boot_kobj = iscsi_boot_create_target(qedi->boot_kset, 0, qedi, 2354 qedi_show_boot_tgt_pri_info, 2355 qedi_tgt_get_attr_visibility, 2356 qedi_boot_release); 2357 if (!boot_kobj) 2358 goto put_host; 2359 2360 if (!scsi_host_get(qedi->shost)) 2361 goto kset_free; 2362 2363 boot_kobj = iscsi_boot_create_target(qedi->boot_kset, 1, qedi, 2364 qedi_show_boot_tgt_sec_info, 2365 qedi_tgt_get_attr_visibility, 2366 qedi_boot_release); 2367 if (!boot_kobj) 2368 goto put_host; 2369 2370 if (!scsi_host_get(qedi->shost)) 2371 goto kset_free; 2372 2373 boot_kobj = iscsi_boot_create_initiator(qedi->boot_kset, 0, qedi, 2374 qedi_show_boot_ini_info, 2375 qedi_ini_get_attr_visibility, 2376 qedi_boot_release); 2377 if (!boot_kobj) 2378 goto put_host; 2379 2380 if (!scsi_host_get(qedi->shost)) 2381 goto kset_free; 2382 2383 boot_kobj = iscsi_boot_create_ethernet(qedi->boot_kset, 0, qedi, 2384 qedi_show_boot_eth_info, 2385 qedi_eth_get_attr_visibility, 2386 qedi_boot_release); 2387 if (!boot_kobj) 2388 goto put_host; 2389 2390 return 0; 2391 2392put_host: 2393 scsi_host_put(qedi->shost); 2394kset_free: 2395 iscsi_boot_destroy_kset(qedi->boot_kset); 2396 return -ENOMEM; 2397} 2398 2399static pci_ers_result_t qedi_io_error_detected(struct pci_dev *pdev, 2400 pci_channel_state_t state) 2401{ 2402 struct qedi_ctx *qedi = pci_get_drvdata(pdev); 2403 2404 QEDI_ERR(&qedi->dbg_ctx, "%s: PCI error detected [%d]\n", 2405 __func__, state); 2406 2407 if (test_and_set_bit(QEDI_IN_RECOVERY, &qedi->flags)) { 2408 QEDI_INFO(&qedi->dbg_ctx, QEDI_LOG_INFO, 2409 "Recovery already in progress.\n"); 2410 return PCI_ERS_RESULT_NONE; 2411 } 2412 2413 qedi_ops->common->recovery_process(qedi->cdev); 2414 2415 return PCI_ERS_RESULT_CAN_RECOVER; 2416} 2417 2418static void __qedi_remove(struct pci_dev *pdev, int mode) 2419{ 2420 struct qedi_ctx *qedi = pci_get_drvdata(pdev); 2421 int rval; 2422 u16 retry = 10; 2423 2424 if (mode == QEDI_MODE_SHUTDOWN) 2425 iscsi_host_for_each_session(qedi->shost, 2426 qedi_clear_session_ctx); 2427 2428 if (mode == QEDI_MODE_NORMAL || mode == QEDI_MODE_SHUTDOWN) { 2429 if (qedi->tmf_thread) { 2430 flush_workqueue(qedi->tmf_thread); 2431 destroy_workqueue(qedi->tmf_thread); 2432 qedi->tmf_thread = NULL; 2433 } 2434 2435 if (qedi->offload_thread) { 2436 flush_workqueue(qedi->offload_thread); 2437 destroy_workqueue(qedi->offload_thread); 2438 qedi->offload_thread = NULL; 2439 } 2440 } 2441 2442#ifdef CONFIG_DEBUG_FS 2443 qedi_dbg_host_exit(&qedi->dbg_ctx); 2444#endif 2445 if (!test_bit(QEDI_IN_OFFLINE, &qedi->flags)) 2446 qedi_ops->common->set_power_state(qedi->cdev, PCI_D0); 2447 2448 qedi_sync_free_irqs(qedi); 2449 2450 if (!test_bit(QEDI_IN_OFFLINE, &qedi->flags)) { 2451 while (retry--) { 2452 rval = qedi_ops->stop(qedi->cdev); 2453 if (rval < 0) 2454 msleep(1000); 2455 else 2456 break; 2457 } 2458 qedi_ops->ll2->stop(qedi->cdev); 2459 } 2460 2461 cancel_delayed_work_sync(&qedi->recovery_work); 2462 cancel_delayed_work_sync(&qedi->board_disable_work); 2463 2464 qedi_free_iscsi_pf_param(qedi); 2465 2466 rval = qedi_ops->common->update_drv_state(qedi->cdev, false); 2467 if (rval) 2468 QEDI_ERR(&qedi->dbg_ctx, "Failed to send drv state to MFW\n"); 2469 2470 if (!test_bit(QEDI_IN_OFFLINE, &qedi->flags)) { 2471 qedi_ops->common->slowpath_stop(qedi->cdev); 2472 qedi_ops->common->remove(qedi->cdev); 2473 } 2474 2475 qedi_destroy_fp(qedi); 2476 2477 if (mode == QEDI_MODE_NORMAL || mode == QEDI_MODE_SHUTDOWN) { 2478 qedi_release_cid_que(qedi); 2479 qedi_cm_free_mem(qedi); 2480 qedi_free_uio(qedi->udev); 2481 qedi_free_itt(qedi); 2482 2483 if (qedi->ll2_recv_thread) { 2484 kthread_stop(qedi->ll2_recv_thread); 2485 qedi->ll2_recv_thread = NULL; 2486 } 2487 qedi_ll2_free_skbs(qedi); 2488 2489 if (qedi->boot_kset) 2490 iscsi_boot_destroy_kset(qedi->boot_kset); 2491 2492 iscsi_host_remove(qedi->shost); 2493 iscsi_host_free(qedi->shost); 2494 } 2495} 2496 2497static void qedi_board_disable_work(struct work_struct *work) 2498{ 2499 struct qedi_ctx *qedi = 2500 container_of(work, struct qedi_ctx, 2501 board_disable_work.work); 2502 2503 QEDI_INFO(&qedi->dbg_ctx, QEDI_LOG_INFO, 2504 "Fan failure, Unloading firmware context.\n"); 2505 2506 if (test_and_set_bit(QEDI_IN_SHUTDOWN, &qedi->flags)) 2507 return; 2508 2509 __qedi_remove(qedi->pdev, QEDI_MODE_SHUTDOWN); 2510} 2511 2512static void qedi_shutdown(struct pci_dev *pdev) 2513{ 2514 struct qedi_ctx *qedi = pci_get_drvdata(pdev); 2515 2516 QEDI_ERR(&qedi->dbg_ctx, "%s: Shutdown qedi\n", __func__); 2517 if (test_and_set_bit(QEDI_IN_SHUTDOWN, &qedi->flags)) 2518 return; 2519 __qedi_remove(pdev, QEDI_MODE_SHUTDOWN); 2520} 2521 2522static int qedi_suspend(struct pci_dev *pdev, pm_message_t state) 2523{ 2524 struct qedi_ctx *qedi; 2525 2526 if (!pdev) { 2527 QEDI_ERR(NULL, "pdev is NULL.\n"); 2528 return -ENODEV; 2529 } 2530 2531 qedi = pci_get_drvdata(pdev); 2532 2533 QEDI_ERR(&qedi->dbg_ctx, "%s: Device does not support suspend operation\n", __func__); 2534 2535 return -EPERM; 2536} 2537 2538static int __qedi_probe(struct pci_dev *pdev, int mode) 2539{ 2540 struct qedi_ctx *qedi; 2541 struct qed_ll2_params params; 2542 u8 dp_level = 0; 2543 bool is_vf = false; 2544 char host_buf[16]; 2545 struct qed_link_params link_params; 2546 struct qed_slowpath_params sp_params; 2547 struct qed_probe_params qed_params; 2548 void *task_start, *task_end; 2549 int rc; 2550 u16 retry = 10; 2551 2552 if (mode != QEDI_MODE_RECOVERY) { 2553 qedi = qedi_host_alloc(pdev); 2554 if (!qedi) { 2555 rc = -ENOMEM; 2556 goto exit_probe; 2557 } 2558 } else { 2559 qedi = pci_get_drvdata(pdev); 2560 } 2561 2562retry_probe: 2563 if (mode == QEDI_MODE_RECOVERY) 2564 msleep(2000); 2565 2566 memset(&qed_params, 0, sizeof(qed_params)); 2567 qed_params.protocol = QED_PROTOCOL_ISCSI; 2568 qed_params.dp_module = qedi_qed_debug; 2569 qed_params.dp_level = dp_level; 2570 qed_params.is_vf = is_vf; 2571 qedi->cdev = qedi_ops->common->probe(pdev, &qed_params); 2572 if (!qedi->cdev) { 2573 if (mode == QEDI_MODE_RECOVERY && retry) { 2574 QEDI_INFO(&qedi->dbg_ctx, QEDI_LOG_INFO, 2575 "Retry %d initialize hardware\n", retry); 2576 retry--; 2577 goto retry_probe; 2578 } 2579 2580 rc = -ENODEV; 2581 QEDI_ERR(&qedi->dbg_ctx, "Cannot initialize hardware\n"); 2582 goto free_host; 2583 } 2584 2585 set_bit(QEDI_ERR_ATTN_CLR_EN, &qedi->qedi_err_flags); 2586 set_bit(QEDI_ERR_IS_RECOVERABLE, &qedi->qedi_err_flags); 2587 atomic_set(&qedi->link_state, QEDI_LINK_DOWN); 2588 2589 rc = qedi_ops->fill_dev_info(qedi->cdev, &qedi->dev_info); 2590 if (rc) 2591 goto free_host; 2592 2593 QEDI_INFO(&qedi->dbg_ctx, QEDI_LOG_INFO, 2594 "dev_info: num_hwfns=%d affin_hwfn_idx=%d.\n", 2595 qedi->dev_info.common.num_hwfns, 2596 qedi_ops->common->get_affin_hwfn_idx(qedi->cdev)); 2597 2598 rc = qedi_set_iscsi_pf_param(qedi); 2599 if (rc) { 2600 rc = -ENOMEM; 2601 QEDI_ERR(&qedi->dbg_ctx, 2602 "Set iSCSI pf param fail\n"); 2603 goto free_host; 2604 } 2605 2606 qedi_ops->common->update_pf_params(qedi->cdev, &qedi->pf_params); 2607 2608 rc = qedi_prepare_fp(qedi); 2609 if (rc) { 2610 QEDI_ERR(&qedi->dbg_ctx, "Cannot start slowpath.\n"); 2611 goto free_pf_params; 2612 } 2613 2614 /* Start the Slowpath-process */ 2615 memset(&sp_params, 0, sizeof(struct qed_slowpath_params)); 2616 sp_params.int_mode = QED_INT_MODE_MSIX; 2617 sp_params.drv_major = QEDI_DRIVER_MAJOR_VER; 2618 sp_params.drv_minor = QEDI_DRIVER_MINOR_VER; 2619 sp_params.drv_rev = QEDI_DRIVER_REV_VER; 2620 sp_params.drv_eng = QEDI_DRIVER_ENG_VER; 2621 strlcpy(sp_params.name, "qedi iSCSI", QED_DRV_VER_STR_SIZE); 2622 rc = qedi_ops->common->slowpath_start(qedi->cdev, &sp_params); 2623 if (rc) { 2624 QEDI_ERR(&qedi->dbg_ctx, "Cannot start slowpath\n"); 2625 goto stop_hw; 2626 } 2627 2628 /* update_pf_params needs to be called before and after slowpath 2629 * start 2630 */ 2631 qedi_ops->common->update_pf_params(qedi->cdev, &qedi->pf_params); 2632 2633 rc = qedi_setup_int(qedi); 2634 if (rc) 2635 goto stop_iscsi_func; 2636 2637 qedi_ops->common->set_power_state(qedi->cdev, PCI_D0); 2638 2639 /* Learn information crucial for qedi to progress */ 2640 rc = qedi_ops->fill_dev_info(qedi->cdev, &qedi->dev_info); 2641 if (rc) 2642 goto stop_iscsi_func; 2643 2644 /* Record BDQ producer doorbell addresses */ 2645 qedi->bdq_primary_prod = qedi->dev_info.primary_dbq_rq_addr; 2646 qedi->bdq_secondary_prod = qedi->dev_info.secondary_bdq_rq_addr; 2647 QEDI_INFO(&qedi->dbg_ctx, QEDI_LOG_DISC, 2648 "BDQ primary_prod=%p secondary_prod=%p.\n", 2649 qedi->bdq_primary_prod, 2650 qedi->bdq_secondary_prod); 2651 2652 /* 2653 * We need to write the number of BDs in the BDQ we've preallocated so 2654 * the f/w will do a prefetch and we'll get an unsolicited CQE when a 2655 * packet arrives. 2656 */ 2657 qedi->bdq_prod_idx = QEDI_BDQ_NUM; 2658 QEDI_INFO(&qedi->dbg_ctx, QEDI_LOG_DISC, 2659 "Writing %d to primary and secondary BDQ doorbell registers.\n", 2660 qedi->bdq_prod_idx); 2661 writew(qedi->bdq_prod_idx, qedi->bdq_primary_prod); 2662 readw(qedi->bdq_primary_prod); 2663 writew(qedi->bdq_prod_idx, qedi->bdq_secondary_prod); 2664 readw(qedi->bdq_secondary_prod); 2665 2666 ether_addr_copy(qedi->mac, qedi->dev_info.common.hw_mac); 2667 QEDI_INFO(&qedi->dbg_ctx, QEDI_LOG_DISC, "MAC address is %pM.\n", 2668 qedi->mac); 2669 2670 snprintf(host_buf, sizeof(host_buf), "host_%d", qedi->shost->host_no); 2671 qedi_ops->common->set_name(qedi->cdev, host_buf); 2672 2673 qedi_ops->register_ops(qedi->cdev, &qedi_cb_ops, qedi); 2674 2675 memset(¶ms, 0, sizeof(params)); 2676 params.mtu = DEF_PATH_MTU + IPV6_HDR_LEN + TCP_HDR_LEN; 2677 qedi->ll2_mtu = DEF_PATH_MTU; 2678 params.drop_ttl0_packets = 0; 2679 params.rx_vlan_stripping = 1; 2680 ether_addr_copy(params.ll2_mac_address, qedi->dev_info.common.hw_mac); 2681 2682 if (mode != QEDI_MODE_RECOVERY) { 2683 /* set up rx path */ 2684 INIT_LIST_HEAD(&qedi->ll2_skb_list); 2685 spin_lock_init(&qedi->ll2_lock); 2686 /* start qedi context */ 2687 spin_lock_init(&qedi->hba_lock); 2688 spin_lock_init(&qedi->task_idx_lock); 2689 mutex_init(&qedi->stats_lock); 2690 } 2691 qedi_ops->ll2->register_cb_ops(qedi->cdev, &qedi_ll2_cb_ops, qedi); 2692 qedi_ops->ll2->start(qedi->cdev, ¶ms); 2693 2694 if (mode != QEDI_MODE_RECOVERY) { 2695 qedi->ll2_recv_thread = kthread_run(qedi_ll2_recv_thread, 2696 (void *)qedi, 2697 "qedi_ll2_thread"); 2698 } 2699 2700 rc = qedi_ops->start(qedi->cdev, &qedi->tasks, 2701 qedi, qedi_iscsi_event_cb); 2702 if (rc) { 2703 rc = -ENODEV; 2704 QEDI_ERR(&qedi->dbg_ctx, "Cannot start iSCSI function\n"); 2705 goto stop_slowpath; 2706 } 2707 2708 task_start = qedi_get_task_mem(&qedi->tasks, 0); 2709 task_end = qedi_get_task_mem(&qedi->tasks, MAX_TID_BLOCKS_ISCSI - 1); 2710 QEDI_INFO(&qedi->dbg_ctx, QEDI_LOG_DISC, 2711 "Task context start=%p, end=%p block_size=%u.\n", 2712 task_start, task_end, qedi->tasks.size); 2713 2714 memset(&link_params, 0, sizeof(link_params)); 2715 link_params.link_up = true; 2716 rc = qedi_ops->common->set_link(qedi->cdev, &link_params); 2717 if (rc) { 2718 QEDI_WARN(&qedi->dbg_ctx, "Link set up failed.\n"); 2719 atomic_set(&qedi->link_state, QEDI_LINK_DOWN); 2720 } 2721 2722#ifdef CONFIG_DEBUG_FS 2723 qedi_dbg_host_init(&qedi->dbg_ctx, qedi_debugfs_ops, 2724 qedi_dbg_fops); 2725#endif 2726 QEDI_INFO(&qedi->dbg_ctx, QEDI_LOG_INFO, 2727 "QLogic FastLinQ iSCSI Module qedi %s, FW %d.%d.%d.%d\n", 2728 QEDI_MODULE_VERSION, FW_MAJOR_VERSION, FW_MINOR_VERSION, 2729 FW_REVISION_VERSION, FW_ENGINEERING_VERSION); 2730 2731 if (mode == QEDI_MODE_NORMAL) { 2732 if (iscsi_host_add(qedi->shost, &pdev->dev)) { 2733 QEDI_ERR(&qedi->dbg_ctx, 2734 "Could not add iscsi host\n"); 2735 rc = -ENOMEM; 2736 goto remove_host; 2737 } 2738 2739 /* Allocate uio buffers */ 2740 rc = qedi_alloc_uio_rings(qedi); 2741 if (rc) { 2742 QEDI_ERR(&qedi->dbg_ctx, 2743 "UIO alloc ring failed err=%d\n", rc); 2744 goto remove_host; 2745 } 2746 2747 rc = qedi_init_uio(qedi); 2748 if (rc) { 2749 QEDI_ERR(&qedi->dbg_ctx, 2750 "UIO init failed, err=%d\n", rc); 2751 goto free_uio; 2752 } 2753 2754 /* host the array on iscsi_conn */ 2755 rc = qedi_setup_cid_que(qedi); 2756 if (rc) { 2757 QEDI_ERR(&qedi->dbg_ctx, 2758 "Could not setup cid que\n"); 2759 goto free_uio; 2760 } 2761 2762 rc = qedi_cm_alloc_mem(qedi); 2763 if (rc) { 2764 QEDI_ERR(&qedi->dbg_ctx, 2765 "Could not alloc cm memory\n"); 2766 goto free_cid_que; 2767 } 2768 2769 rc = qedi_alloc_itt(qedi); 2770 if (rc) { 2771 QEDI_ERR(&qedi->dbg_ctx, 2772 "Could not alloc itt memory\n"); 2773 goto free_cid_que; 2774 } 2775 2776 sprintf(host_buf, "host_%d", qedi->shost->host_no); 2777 qedi->tmf_thread = create_singlethread_workqueue(host_buf); 2778 if (!qedi->tmf_thread) { 2779 QEDI_ERR(&qedi->dbg_ctx, 2780 "Unable to start tmf thread!\n"); 2781 rc = -ENODEV; 2782 goto free_cid_que; 2783 } 2784 2785 sprintf(host_buf, "qedi_ofld%d", qedi->shost->host_no); 2786 qedi->offload_thread = create_workqueue(host_buf); 2787 if (!qedi->offload_thread) { 2788 QEDI_ERR(&qedi->dbg_ctx, 2789 "Unable to start offload thread!\n"); 2790 rc = -ENODEV; 2791 goto free_tmf_thread; 2792 } 2793 2794 INIT_DELAYED_WORK(&qedi->recovery_work, qedi_recovery_handler); 2795 INIT_DELAYED_WORK(&qedi->board_disable_work, 2796 qedi_board_disable_work); 2797 2798 /* F/w needs 1st task context memory entry for performance */ 2799 set_bit(QEDI_RESERVE_TASK_ID, qedi->task_idx_map); 2800 atomic_set(&qedi->num_offloads, 0); 2801 2802 if (qedi_setup_boot_info(qedi)) 2803 QEDI_ERR(&qedi->dbg_ctx, 2804 "No iSCSI boot target configured\n"); 2805 2806 rc = qedi_ops->common->update_drv_state(qedi->cdev, true); 2807 if (rc) 2808 QEDI_ERR(&qedi->dbg_ctx, 2809 "Failed to send drv state to MFW\n"); 2810 2811 } 2812 2813 return 0; 2814 2815free_tmf_thread: 2816 destroy_workqueue(qedi->tmf_thread); 2817free_cid_que: 2818 qedi_release_cid_que(qedi); 2819free_uio: 2820 qedi_free_uio(qedi->udev); 2821remove_host: 2822#ifdef CONFIG_DEBUG_FS 2823 qedi_dbg_host_exit(&qedi->dbg_ctx); 2824#endif 2825 iscsi_host_remove(qedi->shost); 2826stop_iscsi_func: 2827 qedi_ops->stop(qedi->cdev); 2828stop_slowpath: 2829 qedi_ops->common->slowpath_stop(qedi->cdev); 2830stop_hw: 2831 qedi_ops->common->remove(qedi->cdev); 2832free_pf_params: 2833 qedi_free_iscsi_pf_param(qedi); 2834free_host: 2835 iscsi_host_free(qedi->shost); 2836exit_probe: 2837 return rc; 2838} 2839 2840static void qedi_mark_conn_recovery(struct iscsi_cls_session *cls_session) 2841{ 2842 struct iscsi_session *session = cls_session->dd_data; 2843 struct iscsi_conn *conn = session->leadconn; 2844 struct qedi_conn *qedi_conn = conn->dd_data; 2845 2846 iscsi_conn_failure(qedi_conn->cls_conn->dd_data, ISCSI_ERR_CONN_FAILED); 2847} 2848 2849static void qedi_recovery_handler(struct work_struct *work) 2850{ 2851 struct qedi_ctx *qedi = 2852 container_of(work, struct qedi_ctx, recovery_work.work); 2853 2854 iscsi_host_for_each_session(qedi->shost, qedi_mark_conn_recovery); 2855 2856 /* Call common_ops->recovery_prolog to allow the MFW to quiesce 2857 * any PCI transactions. 2858 */ 2859 qedi_ops->common->recovery_prolog(qedi->cdev); 2860 2861 __qedi_remove(qedi->pdev, QEDI_MODE_RECOVERY); 2862 __qedi_probe(qedi->pdev, QEDI_MODE_RECOVERY); 2863 clear_bit(QEDI_IN_RECOVERY, &qedi->flags); 2864} 2865 2866static int qedi_probe(struct pci_dev *pdev, const struct pci_device_id *id) 2867{ 2868 return __qedi_probe(pdev, QEDI_MODE_NORMAL); 2869} 2870 2871static void qedi_remove(struct pci_dev *pdev) 2872{ 2873 __qedi_remove(pdev, QEDI_MODE_NORMAL); 2874} 2875 2876static struct pci_device_id qedi_pci_tbl[] = { 2877 { PCI_DEVICE(PCI_VENDOR_ID_QLOGIC, 0x165E) }, 2878 { PCI_DEVICE(PCI_VENDOR_ID_QLOGIC, 0x8084) }, 2879 { 0 }, 2880}; 2881MODULE_DEVICE_TABLE(pci, qedi_pci_tbl); 2882 2883static enum cpuhp_state qedi_cpuhp_state; 2884 2885static struct pci_error_handlers qedi_err_handler = { 2886 .error_detected = qedi_io_error_detected, 2887}; 2888 2889static struct pci_driver qedi_pci_driver = { 2890 .name = QEDI_MODULE_NAME, 2891 .id_table = qedi_pci_tbl, 2892 .probe = qedi_probe, 2893 .remove = qedi_remove, 2894 .shutdown = qedi_shutdown, 2895 .err_handler = &qedi_err_handler, 2896 .suspend = qedi_suspend, 2897}; 2898 2899static int __init qedi_init(void) 2900{ 2901 struct qedi_percpu_s *p; 2902 int cpu, rc = 0; 2903 2904 qedi_ops = qed_get_iscsi_ops(); 2905 if (!qedi_ops) { 2906 QEDI_ERR(NULL, "Failed to get qed iSCSI operations\n"); 2907 return -EINVAL; 2908 } 2909 2910#ifdef CONFIG_DEBUG_FS 2911 qedi_dbg_init("qedi"); 2912#endif 2913 2914 qedi_scsi_transport = iscsi_register_transport(&qedi_iscsi_transport); 2915 if (!qedi_scsi_transport) { 2916 QEDI_ERR(NULL, "Could not register qedi transport"); 2917 rc = -ENOMEM; 2918 goto exit_qedi_init_1; 2919 } 2920 2921 for_each_possible_cpu(cpu) { 2922 p = &per_cpu(qedi_percpu, cpu); 2923 INIT_LIST_HEAD(&p->work_list); 2924 spin_lock_init(&p->p_work_lock); 2925 p->iothread = NULL; 2926 } 2927 2928 rc = cpuhp_setup_state(CPUHP_AP_ONLINE_DYN, "scsi/qedi:online", 2929 qedi_cpu_online, qedi_cpu_offline); 2930 if (rc < 0) 2931 goto exit_qedi_init_2; 2932 qedi_cpuhp_state = rc; 2933 2934 rc = pci_register_driver(&qedi_pci_driver); 2935 if (rc) { 2936 QEDI_ERR(NULL, "Failed to register driver\n"); 2937 goto exit_qedi_hp; 2938 } 2939 2940 return 0; 2941 2942exit_qedi_hp: 2943 cpuhp_remove_state(qedi_cpuhp_state); 2944exit_qedi_init_2: 2945 iscsi_unregister_transport(&qedi_iscsi_transport); 2946exit_qedi_init_1: 2947#ifdef CONFIG_DEBUG_FS 2948 qedi_dbg_exit(); 2949#endif 2950 qed_put_iscsi_ops(); 2951 return rc; 2952} 2953 2954static void __exit qedi_cleanup(void) 2955{ 2956 pci_unregister_driver(&qedi_pci_driver); 2957 cpuhp_remove_state(qedi_cpuhp_state); 2958 iscsi_unregister_transport(&qedi_iscsi_transport); 2959 2960#ifdef CONFIG_DEBUG_FS 2961 qedi_dbg_exit(); 2962#endif 2963 qed_put_iscsi_ops(); 2964} 2965 2966MODULE_DESCRIPTION("QLogic FastLinQ 4xxxx iSCSI Module"); 2967MODULE_LICENSE("GPL"); 2968MODULE_AUTHOR("QLogic Corporation"); 2969MODULE_VERSION(QEDI_MODULE_VERSION); 2970module_init(qedi_init); 2971module_exit(qedi_cleanup); 2972