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 31 static uint qedi_qed_debug; 32 module_param(qedi_qed_debug, uint, 0644); 33 MODULE_PARM_DESC(qedi_qed_debug, " QED debug level 0 (default)"); 34 35 static uint qedi_fw_debug; 36 module_param(qedi_fw_debug, uint, 0644); 37 MODULE_PARM_DESC(qedi_fw_debug, " Firmware debug level 0(default) to 3"); 38 39 uint qedi_dbg_log = QEDI_LOG_WARN | QEDI_LOG_SCSI_TM; 40 module_param(qedi_dbg_log, uint, 0644); 41 MODULE_PARM_DESC(qedi_dbg_log, " Default debug level"); 42 43 uint qedi_io_tracing; 44 module_param(qedi_io_tracing, uint, 0644); 45 MODULE_PARM_DESC(qedi_io_tracing, 46 " Enable logging of SCSI requests/completions into trace buffer. (default off)."); 47 48 static uint qedi_ll2_buf_size = 0x400; 49 module_param(qedi_ll2_buf_size, uint, 0644); 50 MODULE_PARM_DESC(qedi_ll2_buf_size, 51 "parameter to set ping packet size, default - 0x400, Jumbo packets - 0x2400."); 52 53 static uint qedi_flags_override; 54 module_param(qedi_flags_override, uint, 0644); 55 MODULE_PARM_DESC(qedi_flags_override, "Disable/Enable MFW error flags bits action."); 56 57 const struct qed_iscsi_ops *qedi_ops; 58 static struct scsi_transport_template *qedi_scsi_transport; 59 static struct pci_driver qedi_pci_driver; 60 static DEFINE_PER_CPU(struct qedi_percpu_s, qedi_percpu); 61 static LIST_HEAD(qedi_udev_list); 62 /* Static function declaration */ 63 static int qedi_alloc_global_queues(struct qedi_ctx *qedi); 64 static void qedi_free_global_queues(struct qedi_ctx *qedi); 65 static struct qedi_cmd *qedi_get_cmd_from_tid(struct qedi_ctx *qedi, u32 tid); 66 static void qedi_reset_uio_rings(struct qedi_uio_dev *udev); 67 static void qedi_ll2_free_skbs(struct qedi_ctx *qedi); 68 static struct nvm_iscsi_block *qedi_get_nvram_block(struct qedi_ctx *qedi); 69 static void qedi_recovery_handler(struct work_struct *work); 70 static void qedi_schedule_hw_err_handler(void *dev, 71 enum qed_hw_err_type err_type); 72 73 static int qedi_iscsi_event_cb(void *context, u8 fw_event_code, void *fw_handle) 74 { 75 struct qedi_ctx *qedi; 76 struct qedi_endpoint *qedi_ep; 77 struct iscsi_eqe_data *data; 78 int rval = 0; 79 80 if (!context || !fw_handle) { 81 QEDI_ERR(NULL, "Recv event with ctx NULL\n"); 82 return -EINVAL; 83 } 84 85 qedi = (struct qedi_ctx *)context; 86 QEDI_INFO(&qedi->dbg_ctx, QEDI_LOG_INFO, 87 "Recv Event %d fw_handle %p\n", fw_event_code, fw_handle); 88 89 data = (struct iscsi_eqe_data *)fw_handle; 90 QEDI_INFO(&qedi->dbg_ctx, QEDI_LOG_INFO, 91 "icid=0x%x conn_id=0x%x err-code=0x%x error-pdu-opcode-reserved=0x%x\n", 92 data->icid, data->conn_id, data->error_code, 93 data->error_pdu_opcode_reserved); 94 95 qedi_ep = qedi->ep_tbl[data->icid]; 96 97 if (!qedi_ep) { 98 QEDI_WARN(&qedi->dbg_ctx, 99 "Cannot process event, ep already disconnected, cid=0x%x\n", 100 data->icid); 101 WARN_ON(1); 102 return -ENODEV; 103 } 104 105 switch (fw_event_code) { 106 case ISCSI_EVENT_TYPE_ASYN_CONNECT_COMPLETE: 107 if (qedi_ep->state == EP_STATE_OFLDCONN_START) 108 qedi_ep->state = EP_STATE_OFLDCONN_COMPL; 109 110 wake_up_interruptible(&qedi_ep->tcp_ofld_wait); 111 break; 112 case ISCSI_EVENT_TYPE_ASYN_TERMINATE_DONE: 113 qedi_ep->state = EP_STATE_DISCONN_COMPL; 114 wake_up_interruptible(&qedi_ep->tcp_ofld_wait); 115 break; 116 case ISCSI_EVENT_TYPE_ISCSI_CONN_ERROR: 117 qedi_process_iscsi_error(qedi_ep, data); 118 break; 119 case ISCSI_EVENT_TYPE_ASYN_ABORT_RCVD: 120 case ISCSI_EVENT_TYPE_ASYN_SYN_RCVD: 121 case ISCSI_EVENT_TYPE_ASYN_MAX_RT_TIME: 122 case ISCSI_EVENT_TYPE_ASYN_MAX_RT_CNT: 123 case ISCSI_EVENT_TYPE_ASYN_MAX_KA_PROBES_CNT: 124 case ISCSI_EVENT_TYPE_ASYN_FIN_WAIT2: 125 case ISCSI_EVENT_TYPE_TCP_CONN_ERROR: 126 qedi_process_tcp_error(qedi_ep, data); 127 break; 128 default: 129 QEDI_ERR(&qedi->dbg_ctx, "Recv Unknown Event %u\n", 130 fw_event_code); 131 } 132 133 return rval; 134 } 135 136 static int qedi_uio_open(struct uio_info *uinfo, struct inode *inode) 137 { 138 struct qedi_uio_dev *udev = uinfo->priv; 139 struct qedi_ctx *qedi = udev->qedi; 140 141 if (!capable(CAP_NET_ADMIN)) 142 return -EPERM; 143 144 if (udev->uio_dev != -1) 145 return -EBUSY; 146 147 rtnl_lock(); 148 udev->uio_dev = iminor(inode); 149 qedi_reset_uio_rings(udev); 150 set_bit(UIO_DEV_OPENED, &qedi->flags); 151 rtnl_unlock(); 152 153 return 0; 154 } 155 156 static int qedi_uio_close(struct uio_info *uinfo, struct inode *inode) 157 { 158 struct qedi_uio_dev *udev = uinfo->priv; 159 struct qedi_ctx *qedi = udev->qedi; 160 161 udev->uio_dev = -1; 162 clear_bit(UIO_DEV_OPENED, &qedi->flags); 163 qedi_ll2_free_skbs(qedi); 164 return 0; 165 } 166 167 static void __qedi_free_uio_rings(struct qedi_uio_dev *udev) 168 { 169 if (udev->uctrl) { 170 free_page((unsigned long)udev->uctrl); 171 udev->uctrl = NULL; 172 } 173 174 if (udev->ll2_ring) { 175 free_page((unsigned long)udev->ll2_ring); 176 udev->ll2_ring = NULL; 177 } 178 179 if (udev->ll2_buf) { 180 free_pages((unsigned long)udev->ll2_buf, 2); 181 udev->ll2_buf = NULL; 182 } 183 } 184 185 static void __qedi_free_uio(struct qedi_uio_dev *udev) 186 { 187 uio_unregister_device(&udev->qedi_uinfo); 188 189 __qedi_free_uio_rings(udev); 190 191 pci_dev_put(udev->pdev); 192 kfree(udev); 193 } 194 195 static void qedi_free_uio(struct qedi_uio_dev *udev) 196 { 197 if (!udev) 198 return; 199 200 list_del_init(&udev->list); 201 __qedi_free_uio(udev); 202 } 203 204 static void qedi_reset_uio_rings(struct qedi_uio_dev *udev) 205 { 206 struct qedi_ctx *qedi = NULL; 207 struct qedi_uio_ctrl *uctrl = NULL; 208 209 qedi = udev->qedi; 210 uctrl = udev->uctrl; 211 212 spin_lock_bh(&qedi->ll2_lock); 213 uctrl->host_rx_cons = 0; 214 uctrl->hw_rx_prod = 0; 215 uctrl->hw_rx_bd_prod = 0; 216 uctrl->host_rx_bd_cons = 0; 217 218 memset(udev->ll2_ring, 0, udev->ll2_ring_size); 219 memset(udev->ll2_buf, 0, udev->ll2_buf_size); 220 spin_unlock_bh(&qedi->ll2_lock); 221 } 222 223 static int __qedi_alloc_uio_rings(struct qedi_uio_dev *udev) 224 { 225 int rc = 0; 226 227 if (udev->ll2_ring || udev->ll2_buf) 228 return rc; 229 230 /* Memory for control area. */ 231 udev->uctrl = (void *)get_zeroed_page(GFP_KERNEL); 232 if (!udev->uctrl) 233 return -ENOMEM; 234 235 /* Allocating memory for LL2 ring */ 236 udev->ll2_ring_size = QEDI_PAGE_SIZE; 237 udev->ll2_ring = (void *)get_zeroed_page(GFP_KERNEL | __GFP_COMP); 238 if (!udev->ll2_ring) { 239 rc = -ENOMEM; 240 goto exit_alloc_ring; 241 } 242 243 /* Allocating memory for Tx/Rx pkt buffer */ 244 udev->ll2_buf_size = TX_RX_RING * qedi_ll2_buf_size; 245 udev->ll2_buf_size = QEDI_PAGE_ALIGN(udev->ll2_buf_size); 246 udev->ll2_buf = (void *)__get_free_pages(GFP_KERNEL | __GFP_COMP | 247 __GFP_ZERO, 2); 248 if (!udev->ll2_buf) { 249 rc = -ENOMEM; 250 goto exit_alloc_buf; 251 } 252 return rc; 253 254 exit_alloc_buf: 255 free_page((unsigned long)udev->ll2_ring); 256 udev->ll2_ring = NULL; 257 exit_alloc_ring: 258 return rc; 259 } 260 261 static int qedi_alloc_uio_rings(struct qedi_ctx *qedi) 262 { 263 struct qedi_uio_dev *udev = NULL; 264 int rc = 0; 265 266 list_for_each_entry(udev, &qedi_udev_list, list) { 267 if (udev->pdev == qedi->pdev) { 268 udev->qedi = qedi; 269 if (__qedi_alloc_uio_rings(udev)) { 270 udev->qedi = NULL; 271 return -ENOMEM; 272 } 273 qedi->udev = udev; 274 return 0; 275 } 276 } 277 278 udev = kzalloc(sizeof(*udev), GFP_KERNEL); 279 if (!udev) 280 goto err_udev; 281 282 udev->uio_dev = -1; 283 284 udev->qedi = qedi; 285 udev->pdev = qedi->pdev; 286 287 rc = __qedi_alloc_uio_rings(udev); 288 if (rc) 289 goto err_uctrl; 290 291 list_add(&udev->list, &qedi_udev_list); 292 293 pci_dev_get(udev->pdev); 294 qedi->udev = udev; 295 296 udev->tx_pkt = udev->ll2_buf; 297 udev->rx_pkt = udev->ll2_buf + qedi_ll2_buf_size; 298 return 0; 299 300 err_uctrl: 301 kfree(udev); 302 err_udev: 303 return -ENOMEM; 304 } 305 306 static int qedi_init_uio(struct qedi_ctx *qedi) 307 { 308 struct qedi_uio_dev *udev = qedi->udev; 309 struct uio_info *uinfo; 310 int ret = 0; 311 312 if (!udev) 313 return -ENOMEM; 314 315 uinfo = &udev->qedi_uinfo; 316 317 uinfo->mem[0].addr = (unsigned long)udev->uctrl; 318 uinfo->mem[0].size = sizeof(struct qedi_uio_ctrl); 319 uinfo->mem[0].memtype = UIO_MEM_LOGICAL; 320 321 uinfo->mem[1].addr = (unsigned long)udev->ll2_ring; 322 uinfo->mem[1].size = udev->ll2_ring_size; 323 uinfo->mem[1].memtype = UIO_MEM_LOGICAL; 324 325 uinfo->mem[2].addr = (unsigned long)udev->ll2_buf; 326 uinfo->mem[2].size = udev->ll2_buf_size; 327 uinfo->mem[2].memtype = UIO_MEM_LOGICAL; 328 329 uinfo->name = "qedi_uio"; 330 uinfo->version = QEDI_MODULE_VERSION; 331 uinfo->irq = UIO_IRQ_CUSTOM; 332 333 uinfo->open = qedi_uio_open; 334 uinfo->release = qedi_uio_close; 335 336 if (udev->uio_dev == -1) { 337 if (!uinfo->priv) { 338 uinfo->priv = udev; 339 340 ret = uio_register_device(&udev->pdev->dev, uinfo); 341 if (ret) { 342 QEDI_ERR(&qedi->dbg_ctx, 343 "UIO registration failed\n"); 344 } 345 } 346 } 347 348 return ret; 349 } 350 351 static int qedi_alloc_and_init_sb(struct qedi_ctx *qedi, 352 struct qed_sb_info *sb_info, u16 sb_id) 353 { 354 struct status_block *sb_virt; 355 dma_addr_t sb_phys; 356 int ret; 357 358 sb_virt = dma_alloc_coherent(&qedi->pdev->dev, 359 sizeof(struct status_block), &sb_phys, 360 GFP_KERNEL); 361 if (!sb_virt) { 362 QEDI_ERR(&qedi->dbg_ctx, 363 "Status block allocation failed for id = %d.\n", 364 sb_id); 365 return -ENOMEM; 366 } 367 368 ret = qedi_ops->common->sb_init(qedi->cdev, sb_info, sb_virt, sb_phys, 369 sb_id, QED_SB_TYPE_STORAGE); 370 if (ret) { 371 QEDI_ERR(&qedi->dbg_ctx, 372 "Status block initialization failed for id = %d.\n", 373 sb_id); 374 return ret; 375 } 376 377 return 0; 378 } 379 380 static void qedi_free_sb(struct qedi_ctx *qedi) 381 { 382 struct qed_sb_info *sb_info; 383 int id; 384 385 for (id = 0; id < MIN_NUM_CPUS_MSIX(qedi); id++) { 386 sb_info = &qedi->sb_array[id]; 387 if (sb_info->sb_virt) 388 dma_free_coherent(&qedi->pdev->dev, 389 sizeof(*sb_info->sb_virt), 390 (void *)sb_info->sb_virt, 391 sb_info->sb_phys); 392 } 393 } 394 395 static void qedi_free_fp(struct qedi_ctx *qedi) 396 { 397 kfree(qedi->fp_array); 398 kfree(qedi->sb_array); 399 } 400 401 static void qedi_destroy_fp(struct qedi_ctx *qedi) 402 { 403 qedi_free_sb(qedi); 404 qedi_free_fp(qedi); 405 } 406 407 static int qedi_alloc_fp(struct qedi_ctx *qedi) 408 { 409 int ret = 0; 410 411 qedi->fp_array = kcalloc(MIN_NUM_CPUS_MSIX(qedi), 412 sizeof(struct qedi_fastpath), GFP_KERNEL); 413 if (!qedi->fp_array) { 414 QEDI_ERR(&qedi->dbg_ctx, 415 "fastpath fp array allocation failed.\n"); 416 return -ENOMEM; 417 } 418 419 qedi->sb_array = kcalloc(MIN_NUM_CPUS_MSIX(qedi), 420 sizeof(struct qed_sb_info), GFP_KERNEL); 421 if (!qedi->sb_array) { 422 QEDI_ERR(&qedi->dbg_ctx, 423 "fastpath sb array allocation failed.\n"); 424 ret = -ENOMEM; 425 goto free_fp; 426 } 427 428 return ret; 429 430 free_fp: 431 qedi_free_fp(qedi); 432 return ret; 433 } 434 435 static void qedi_int_fp(struct qedi_ctx *qedi) 436 { 437 struct qedi_fastpath *fp; 438 int id; 439 440 memset(qedi->fp_array, 0, MIN_NUM_CPUS_MSIX(qedi) * 441 sizeof(*qedi->fp_array)); 442 memset(qedi->sb_array, 0, MIN_NUM_CPUS_MSIX(qedi) * 443 sizeof(*qedi->sb_array)); 444 445 for (id = 0; id < MIN_NUM_CPUS_MSIX(qedi); id++) { 446 fp = &qedi->fp_array[id]; 447 fp->sb_info = &qedi->sb_array[id]; 448 fp->sb_id = id; 449 fp->qedi = qedi; 450 snprintf(fp->name, sizeof(fp->name), "%s-fp-%d", 451 "qedi", id); 452 453 /* fp_array[i] ---- irq cookie 454 * So init data which is needed in int ctx 455 */ 456 } 457 } 458 459 static int qedi_prepare_fp(struct qedi_ctx *qedi) 460 { 461 struct qedi_fastpath *fp; 462 int id, ret = 0; 463 464 ret = qedi_alloc_fp(qedi); 465 if (ret) 466 goto err; 467 468 qedi_int_fp(qedi); 469 470 for (id = 0; id < MIN_NUM_CPUS_MSIX(qedi); id++) { 471 fp = &qedi->fp_array[id]; 472 ret = qedi_alloc_and_init_sb(qedi, fp->sb_info, fp->sb_id); 473 if (ret) { 474 QEDI_ERR(&qedi->dbg_ctx, 475 "SB allocation and initialization failed.\n"); 476 ret = -EIO; 477 goto err_init; 478 } 479 } 480 481 return 0; 482 483 err_init: 484 qedi_free_sb(qedi); 485 qedi_free_fp(qedi); 486 err: 487 return ret; 488 } 489 490 static int qedi_setup_cid_que(struct qedi_ctx *qedi) 491 { 492 int i; 493 494 qedi->cid_que.cid_que_base = kmalloc_array(qedi->max_active_conns, 495 sizeof(u32), GFP_KERNEL); 496 if (!qedi->cid_que.cid_que_base) 497 return -ENOMEM; 498 499 qedi->cid_que.conn_cid_tbl = kmalloc_array(qedi->max_active_conns, 500 sizeof(struct qedi_conn *), 501 GFP_KERNEL); 502 if (!qedi->cid_que.conn_cid_tbl) { 503 kfree(qedi->cid_que.cid_que_base); 504 qedi->cid_que.cid_que_base = NULL; 505 return -ENOMEM; 506 } 507 508 qedi->cid_que.cid_que = (u32 *)qedi->cid_que.cid_que_base; 509 qedi->cid_que.cid_q_prod_idx = 0; 510 qedi->cid_que.cid_q_cons_idx = 0; 511 qedi->cid_que.cid_q_max_idx = qedi->max_active_conns; 512 qedi->cid_que.cid_free_cnt = qedi->max_active_conns; 513 514 for (i = 0; i < qedi->max_active_conns; i++) { 515 qedi->cid_que.cid_que[i] = i; 516 qedi->cid_que.conn_cid_tbl[i] = NULL; 517 } 518 519 return 0; 520 } 521 522 static void qedi_release_cid_que(struct qedi_ctx *qedi) 523 { 524 kfree(qedi->cid_que.cid_que_base); 525 qedi->cid_que.cid_que_base = NULL; 526 527 kfree(qedi->cid_que.conn_cid_tbl); 528 qedi->cid_que.conn_cid_tbl = NULL; 529 } 530 531 static int qedi_init_id_tbl(struct qedi_portid_tbl *id_tbl, u16 size, 532 u16 start_id, u16 next) 533 { 534 id_tbl->start = start_id; 535 id_tbl->max = size; 536 id_tbl->next = next; 537 spin_lock_init(&id_tbl->lock); 538 id_tbl->table = kcalloc(BITS_TO_LONGS(size), sizeof(long), GFP_KERNEL); 539 if (!id_tbl->table) 540 return -ENOMEM; 541 542 return 0; 543 } 544 545 static void qedi_free_id_tbl(struct qedi_portid_tbl *id_tbl) 546 { 547 kfree(id_tbl->table); 548 id_tbl->table = NULL; 549 } 550 551 int qedi_alloc_id(struct qedi_portid_tbl *id_tbl, u16 id) 552 { 553 int ret = -1; 554 555 id -= id_tbl->start; 556 if (id >= id_tbl->max) 557 return ret; 558 559 spin_lock(&id_tbl->lock); 560 if (!test_bit(id, id_tbl->table)) { 561 set_bit(id, id_tbl->table); 562 ret = 0; 563 } 564 spin_unlock(&id_tbl->lock); 565 return ret; 566 } 567 568 u16 qedi_alloc_new_id(struct qedi_portid_tbl *id_tbl) 569 { 570 u16 id; 571 572 spin_lock(&id_tbl->lock); 573 id = find_next_zero_bit(id_tbl->table, id_tbl->max, id_tbl->next); 574 if (id >= id_tbl->max) { 575 id = QEDI_LOCAL_PORT_INVALID; 576 if (id_tbl->next != 0) { 577 id = find_first_zero_bit(id_tbl->table, id_tbl->next); 578 if (id >= id_tbl->next) 579 id = QEDI_LOCAL_PORT_INVALID; 580 } 581 } 582 583 if (id < id_tbl->max) { 584 set_bit(id, id_tbl->table); 585 id_tbl->next = (id + 1) & (id_tbl->max - 1); 586 id += id_tbl->start; 587 } 588 589 spin_unlock(&id_tbl->lock); 590 591 return id; 592 } 593 594 void qedi_free_id(struct qedi_portid_tbl *id_tbl, u16 id) 595 { 596 if (id == QEDI_LOCAL_PORT_INVALID) 597 return; 598 599 id -= id_tbl->start; 600 if (id >= id_tbl->max) 601 return; 602 603 clear_bit(id, id_tbl->table); 604 } 605 606 static void qedi_cm_free_mem(struct qedi_ctx *qedi) 607 { 608 kfree(qedi->ep_tbl); 609 qedi->ep_tbl = NULL; 610 qedi_free_id_tbl(&qedi->lcl_port_tbl); 611 } 612 613 static int qedi_cm_alloc_mem(struct qedi_ctx *qedi) 614 { 615 u16 port_id; 616 617 qedi->ep_tbl = kzalloc((qedi->max_active_conns * 618 sizeof(struct qedi_endpoint *)), GFP_KERNEL); 619 if (!qedi->ep_tbl) 620 return -ENOMEM; 621 port_id = prandom_u32() % QEDI_LOCAL_PORT_RANGE; 622 if (qedi_init_id_tbl(&qedi->lcl_port_tbl, QEDI_LOCAL_PORT_RANGE, 623 QEDI_LOCAL_PORT_MIN, port_id)) { 624 qedi_cm_free_mem(qedi); 625 return -ENOMEM; 626 } 627 628 return 0; 629 } 630 631 static struct qedi_ctx *qedi_host_alloc(struct pci_dev *pdev) 632 { 633 struct Scsi_Host *shost; 634 struct qedi_ctx *qedi = NULL; 635 636 shost = iscsi_host_alloc(&qedi_host_template, 637 sizeof(struct qedi_ctx), 0); 638 if (!shost) { 639 QEDI_ERR(NULL, "Could not allocate shost\n"); 640 goto exit_setup_shost; 641 } 642 643 shost->max_id = QEDI_MAX_ISCSI_CONNS_PER_HBA - 1; 644 shost->max_channel = 0; 645 shost->max_lun = ~0; 646 shost->max_cmd_len = 16; 647 shost->transportt = qedi_scsi_transport; 648 649 qedi = iscsi_host_priv(shost); 650 memset(qedi, 0, sizeof(*qedi)); 651 qedi->shost = shost; 652 qedi->dbg_ctx.host_no = shost->host_no; 653 qedi->pdev = pdev; 654 qedi->dbg_ctx.pdev = pdev; 655 qedi->max_active_conns = ISCSI_MAX_SESS_PER_HBA; 656 qedi->max_sqes = QEDI_SQ_SIZE; 657 658 shost->nr_hw_queues = MIN_NUM_CPUS_MSIX(qedi); 659 660 pci_set_drvdata(pdev, qedi); 661 662 exit_setup_shost: 663 return qedi; 664 } 665 666 static int qedi_ll2_rx(void *cookie, struct sk_buff *skb, u32 arg1, u32 arg2) 667 { 668 struct qedi_ctx *qedi = (struct qedi_ctx *)cookie; 669 struct skb_work_list *work; 670 struct ethhdr *eh; 671 672 if (!qedi) { 673 QEDI_ERR(NULL, "qedi is NULL\n"); 674 return -1; 675 } 676 677 if (!test_bit(UIO_DEV_OPENED, &qedi->flags)) { 678 QEDI_INFO(&qedi->dbg_ctx, QEDI_LOG_UIO, 679 "UIO DEV is not opened\n"); 680 kfree_skb(skb); 681 return 0; 682 } 683 684 eh = (struct ethhdr *)skb->data; 685 /* Undo VLAN encapsulation */ 686 if (eh->h_proto == htons(ETH_P_8021Q)) { 687 memmove((u8 *)eh + VLAN_HLEN, eh, ETH_ALEN * 2); 688 eh = (struct ethhdr *)skb_pull(skb, VLAN_HLEN); 689 skb_reset_mac_header(skb); 690 } 691 692 /* Filter out non FIP/FCoE frames here to free them faster */ 693 if (eh->h_proto != htons(ETH_P_ARP) && 694 eh->h_proto != htons(ETH_P_IP) && 695 eh->h_proto != htons(ETH_P_IPV6)) { 696 QEDI_INFO(&qedi->dbg_ctx, QEDI_LOG_LL2, 697 "Dropping frame ethertype [0x%x] len [0x%x].\n", 698 eh->h_proto, skb->len); 699 kfree_skb(skb); 700 return 0; 701 } 702 703 QEDI_INFO(&qedi->dbg_ctx, QEDI_LOG_LL2, 704 "Allowed frame ethertype [0x%x] len [0x%x].\n", 705 eh->h_proto, skb->len); 706 707 work = kzalloc(sizeof(*work), GFP_ATOMIC); 708 if (!work) { 709 QEDI_WARN(&qedi->dbg_ctx, 710 "Could not allocate work so dropping frame.\n"); 711 kfree_skb(skb); 712 return 0; 713 } 714 715 INIT_LIST_HEAD(&work->list); 716 work->skb = skb; 717 718 if (skb_vlan_tag_present(skb)) 719 work->vlan_id = skb_vlan_tag_get(skb); 720 721 if (work->vlan_id) 722 __vlan_insert_tag(work->skb, htons(ETH_P_8021Q), work->vlan_id); 723 724 spin_lock_bh(&qedi->ll2_lock); 725 list_add_tail(&work->list, &qedi->ll2_skb_list); 726 spin_unlock_bh(&qedi->ll2_lock); 727 728 wake_up_process(qedi->ll2_recv_thread); 729 730 return 0; 731 } 732 733 /* map this skb to iscsiuio mmaped region */ 734 static int qedi_ll2_process_skb(struct qedi_ctx *qedi, struct sk_buff *skb, 735 u16 vlan_id) 736 { 737 struct qedi_uio_dev *udev = NULL; 738 struct qedi_uio_ctrl *uctrl = NULL; 739 struct qedi_rx_bd rxbd; 740 struct qedi_rx_bd *p_rxbd; 741 u32 rx_bd_prod; 742 void *pkt; 743 int len = 0; 744 u32 prod; 745 746 if (!qedi) { 747 QEDI_ERR(NULL, "qedi is NULL\n"); 748 return -1; 749 } 750 751 udev = qedi->udev; 752 uctrl = udev->uctrl; 753 754 ++uctrl->hw_rx_prod_cnt; 755 prod = (uctrl->hw_rx_prod + 1) % RX_RING; 756 757 pkt = udev->rx_pkt + (prod * qedi_ll2_buf_size); 758 len = min_t(u32, skb->len, (u32)qedi_ll2_buf_size); 759 memcpy(pkt, skb->data, len); 760 761 memset(&rxbd, 0, sizeof(rxbd)); 762 rxbd.rx_pkt_index = prod; 763 rxbd.rx_pkt_len = len; 764 rxbd.vlan_id = vlan_id; 765 766 uctrl->hw_rx_bd_prod = (uctrl->hw_rx_bd_prod + 1) % QEDI_NUM_RX_BD; 767 rx_bd_prod = uctrl->hw_rx_bd_prod; 768 p_rxbd = (struct qedi_rx_bd *)udev->ll2_ring; 769 p_rxbd += rx_bd_prod; 770 771 memcpy(p_rxbd, &rxbd, sizeof(rxbd)); 772 773 QEDI_INFO(&qedi->dbg_ctx, QEDI_LOG_LL2, 774 "hw_rx_prod [%d] prod [%d] hw_rx_bd_prod [%d] rx_pkt_idx [%d] rx_len [%d].\n", 775 uctrl->hw_rx_prod, prod, uctrl->hw_rx_bd_prod, 776 rxbd.rx_pkt_index, rxbd.rx_pkt_len); 777 QEDI_INFO(&qedi->dbg_ctx, QEDI_LOG_LL2, 778 "host_rx_cons [%d] hw_rx_bd_cons [%d].\n", 779 uctrl->host_rx_cons, uctrl->host_rx_bd_cons); 780 781 uctrl->hw_rx_prod = prod; 782 783 /* notify the iscsiuio about new packet */ 784 uio_event_notify(&udev->qedi_uinfo); 785 786 return 0; 787 } 788 789 static void qedi_ll2_free_skbs(struct qedi_ctx *qedi) 790 { 791 struct skb_work_list *work, *work_tmp; 792 793 spin_lock_bh(&qedi->ll2_lock); 794 list_for_each_entry_safe(work, work_tmp, &qedi->ll2_skb_list, list) { 795 list_del(&work->list); 796 kfree_skb(work->skb); 797 kfree(work); 798 } 799 spin_unlock_bh(&qedi->ll2_lock); 800 } 801 802 static int qedi_ll2_recv_thread(void *arg) 803 { 804 struct qedi_ctx *qedi = (struct qedi_ctx *)arg; 805 struct skb_work_list *work, *work_tmp; 806 807 set_user_nice(current, -20); 808 809 while (!kthread_should_stop()) { 810 spin_lock_bh(&qedi->ll2_lock); 811 list_for_each_entry_safe(work, work_tmp, &qedi->ll2_skb_list, 812 list) { 813 list_del(&work->list); 814 qedi_ll2_process_skb(qedi, work->skb, work->vlan_id); 815 kfree_skb(work->skb); 816 kfree(work); 817 } 818 set_current_state(TASK_INTERRUPTIBLE); 819 spin_unlock_bh(&qedi->ll2_lock); 820 schedule(); 821 } 822 823 __set_current_state(TASK_RUNNING); 824 return 0; 825 } 826 827 static int qedi_set_iscsi_pf_param(struct qedi_ctx *qedi) 828 { 829 u8 num_sq_pages; 830 u32 log_page_size; 831 int rval = 0; 832 833 834 num_sq_pages = (MAX_OUTSTANDING_TASKS_PER_CON * 8) / QEDI_PAGE_SIZE; 835 836 qedi->num_queues = MIN_NUM_CPUS_MSIX(qedi); 837 838 QEDI_INFO(&qedi->dbg_ctx, QEDI_LOG_INFO, 839 "Number of CQ count is %d\n", qedi->num_queues); 840 841 memset(&qedi->pf_params.iscsi_pf_params, 0, 842 sizeof(qedi->pf_params.iscsi_pf_params)); 843 844 qedi->p_cpuq = dma_alloc_coherent(&qedi->pdev->dev, 845 qedi->num_queues * sizeof(struct qedi_glbl_q_params), 846 &qedi->hw_p_cpuq, GFP_KERNEL); 847 if (!qedi->p_cpuq) { 848 QEDI_ERR(&qedi->dbg_ctx, "dma_alloc_coherent fail\n"); 849 rval = -1; 850 goto err_alloc_mem; 851 } 852 853 rval = qedi_alloc_global_queues(qedi); 854 if (rval) { 855 QEDI_ERR(&qedi->dbg_ctx, "Global queue allocation failed.\n"); 856 rval = -1; 857 goto err_alloc_mem; 858 } 859 860 qedi->pf_params.iscsi_pf_params.num_cons = QEDI_MAX_ISCSI_CONNS_PER_HBA; 861 qedi->pf_params.iscsi_pf_params.num_tasks = QEDI_MAX_ISCSI_TASK; 862 qedi->pf_params.iscsi_pf_params.half_way_close_timeout = 10; 863 qedi->pf_params.iscsi_pf_params.num_sq_pages_in_ring = num_sq_pages; 864 qedi->pf_params.iscsi_pf_params.num_r2tq_pages_in_ring = num_sq_pages; 865 qedi->pf_params.iscsi_pf_params.num_uhq_pages_in_ring = num_sq_pages; 866 qedi->pf_params.iscsi_pf_params.num_queues = qedi->num_queues; 867 qedi->pf_params.iscsi_pf_params.debug_mode = qedi_fw_debug; 868 qedi->pf_params.iscsi_pf_params.two_msl_timer = QED_TWO_MSL_TIMER_DFLT; 869 qedi->pf_params.iscsi_pf_params.tx_sws_timer = QED_TX_SWS_TIMER_DFLT; 870 qedi->pf_params.iscsi_pf_params.max_fin_rt = 2; 871 872 for (log_page_size = 0 ; log_page_size < 32 ; log_page_size++) { 873 if ((1 << log_page_size) == QEDI_PAGE_SIZE) 874 break; 875 } 876 qedi->pf_params.iscsi_pf_params.log_page_size = log_page_size; 877 878 qedi->pf_params.iscsi_pf_params.glbl_q_params_addr = 879 (u64)qedi->hw_p_cpuq; 880 881 /* RQ BDQ initializations. 882 * rq_num_entries: suggested value for Initiator is 16 (4KB RQ) 883 * rqe_log_size: 8 for 256B RQE 884 */ 885 qedi->pf_params.iscsi_pf_params.rqe_log_size = 8; 886 /* BDQ address and size */ 887 qedi->pf_params.iscsi_pf_params.bdq_pbl_base_addr[BDQ_ID_RQ] = 888 qedi->bdq_pbl_list_dma; 889 qedi->pf_params.iscsi_pf_params.bdq_pbl_num_entries[BDQ_ID_RQ] = 890 qedi->bdq_pbl_list_num_entries; 891 qedi->pf_params.iscsi_pf_params.rq_buffer_size = QEDI_BDQ_BUF_SIZE; 892 893 /* cq_num_entries: num_tasks + rq_num_entries */ 894 qedi->pf_params.iscsi_pf_params.cq_num_entries = 2048; 895 896 qedi->pf_params.iscsi_pf_params.gl_rq_pi = QEDI_PROTO_CQ_PROD_IDX; 897 qedi->pf_params.iscsi_pf_params.gl_cmd_pi = 1; 898 899 err_alloc_mem: 900 return rval; 901 } 902 903 /* Free DMA coherent memory for array of queue pointers we pass to qed */ 904 static void qedi_free_iscsi_pf_param(struct qedi_ctx *qedi) 905 { 906 size_t size = 0; 907 908 if (qedi->p_cpuq) { 909 size = qedi->num_queues * sizeof(struct qedi_glbl_q_params); 910 dma_free_coherent(&qedi->pdev->dev, size, qedi->p_cpuq, 911 qedi->hw_p_cpuq); 912 } 913 914 qedi_free_global_queues(qedi); 915 916 kfree(qedi->global_queues); 917 } 918 919 static void qedi_get_boot_tgt_info(struct nvm_iscsi_block *block, 920 struct qedi_boot_target *tgt, u8 index) 921 { 922 u32 ipv6_en; 923 924 ipv6_en = !!(block->generic.ctrl_flags & 925 NVM_ISCSI_CFG_GEN_IPV6_ENABLED); 926 927 snprintf(tgt->iscsi_name, sizeof(tgt->iscsi_name), "%s", 928 block->target[index].target_name.byte); 929 930 tgt->ipv6_en = ipv6_en; 931 932 if (ipv6_en) 933 snprintf(tgt->ip_addr, IPV6_LEN, "%pI6\n", 934 block->target[index].ipv6_addr.byte); 935 else 936 snprintf(tgt->ip_addr, IPV4_LEN, "%pI4\n", 937 block->target[index].ipv4_addr.byte); 938 } 939 940 static int qedi_find_boot_info(struct qedi_ctx *qedi, 941 struct qed_mfw_tlv_iscsi *iscsi, 942 struct nvm_iscsi_block *block) 943 { 944 struct qedi_boot_target *pri_tgt = NULL, *sec_tgt = NULL; 945 u32 pri_ctrl_flags = 0, sec_ctrl_flags = 0, found = 0; 946 struct iscsi_cls_session *cls_sess; 947 struct iscsi_cls_conn *cls_conn; 948 struct qedi_conn *qedi_conn; 949 struct iscsi_session *sess; 950 struct iscsi_conn *conn; 951 char ep_ip_addr[64]; 952 int i, ret = 0; 953 954 pri_ctrl_flags = !!(block->target[0].ctrl_flags & 955 NVM_ISCSI_CFG_TARGET_ENABLED); 956 if (pri_ctrl_flags) { 957 pri_tgt = kzalloc(sizeof(*pri_tgt), GFP_KERNEL); 958 if (!pri_tgt) 959 return -1; 960 qedi_get_boot_tgt_info(block, pri_tgt, 0); 961 } 962 963 sec_ctrl_flags = !!(block->target[1].ctrl_flags & 964 NVM_ISCSI_CFG_TARGET_ENABLED); 965 if (sec_ctrl_flags) { 966 sec_tgt = kzalloc(sizeof(*sec_tgt), GFP_KERNEL); 967 if (!sec_tgt) { 968 ret = -1; 969 goto free_tgt; 970 } 971 qedi_get_boot_tgt_info(block, sec_tgt, 1); 972 } 973 974 for (i = 0; i < qedi->max_active_conns; i++) { 975 qedi_conn = qedi_get_conn_from_id(qedi, i); 976 if (!qedi_conn) 977 continue; 978 979 if (qedi_conn->ep->ip_type == TCP_IPV4) 980 snprintf(ep_ip_addr, IPV4_LEN, "%pI4\n", 981 qedi_conn->ep->dst_addr); 982 else 983 snprintf(ep_ip_addr, IPV6_LEN, "%pI6\n", 984 qedi_conn->ep->dst_addr); 985 986 cls_conn = qedi_conn->cls_conn; 987 conn = cls_conn->dd_data; 988 cls_sess = iscsi_conn_to_session(cls_conn); 989 sess = cls_sess->dd_data; 990 991 if (!iscsi_is_session_online(cls_sess)) 992 continue; 993 994 if (!sess->targetname) 995 continue; 996 997 if (pri_ctrl_flags) { 998 if (!strcmp(pri_tgt->iscsi_name, sess->targetname) && 999 !strcmp(pri_tgt->ip_addr, ep_ip_addr)) { 1000 found = 1; 1001 break; 1002 } 1003 } 1004 1005 if (sec_ctrl_flags) { 1006 if (!strcmp(sec_tgt->iscsi_name, sess->targetname) && 1007 !strcmp(sec_tgt->ip_addr, ep_ip_addr)) { 1008 found = 1; 1009 break; 1010 } 1011 } 1012 } 1013 1014 if (found) { 1015 if (conn->hdrdgst_en) { 1016 iscsi->header_digest_set = true; 1017 iscsi->header_digest = 1; 1018 } 1019 1020 if (conn->datadgst_en) { 1021 iscsi->data_digest_set = true; 1022 iscsi->data_digest = 1; 1023 } 1024 iscsi->boot_taget_portal_set = true; 1025 iscsi->boot_taget_portal = sess->tpgt; 1026 1027 } else { 1028 ret = -1; 1029 } 1030 1031 if (sec_ctrl_flags) 1032 kfree(sec_tgt); 1033 free_tgt: 1034 if (pri_ctrl_flags) 1035 kfree(pri_tgt); 1036 1037 return ret; 1038 } 1039 1040 static void qedi_get_generic_tlv_data(void *dev, struct qed_generic_tlvs *data) 1041 { 1042 struct qedi_ctx *qedi; 1043 1044 if (!dev) { 1045 QEDI_INFO(NULL, QEDI_LOG_EVT, 1046 "dev is NULL so ignoring get_generic_tlv_data request.\n"); 1047 return; 1048 } 1049 qedi = (struct qedi_ctx *)dev; 1050 1051 memset(data, 0, sizeof(struct qed_generic_tlvs)); 1052 ether_addr_copy(data->mac[0], qedi->mac); 1053 } 1054 1055 /* 1056 * Protocol TLV handler 1057 */ 1058 static void qedi_get_protocol_tlv_data(void *dev, void *data) 1059 { 1060 struct qed_mfw_tlv_iscsi *iscsi = data; 1061 struct qed_iscsi_stats *fw_iscsi_stats; 1062 struct nvm_iscsi_block *block = NULL; 1063 u32 chap_en = 0, mchap_en = 0; 1064 struct qedi_ctx *qedi = dev; 1065 int rval = 0; 1066 1067 fw_iscsi_stats = kmalloc(sizeof(*fw_iscsi_stats), GFP_KERNEL); 1068 if (!fw_iscsi_stats) { 1069 QEDI_ERR(&qedi->dbg_ctx, 1070 "Could not allocate memory for fw_iscsi_stats.\n"); 1071 goto exit_get_data; 1072 } 1073 1074 mutex_lock(&qedi->stats_lock); 1075 /* Query firmware for offload stats */ 1076 qedi_ops->get_stats(qedi->cdev, fw_iscsi_stats); 1077 mutex_unlock(&qedi->stats_lock); 1078 1079 iscsi->rx_frames_set = true; 1080 iscsi->rx_frames = fw_iscsi_stats->iscsi_rx_packet_cnt; 1081 iscsi->rx_bytes_set = true; 1082 iscsi->rx_bytes = fw_iscsi_stats->iscsi_rx_bytes_cnt; 1083 iscsi->tx_frames_set = true; 1084 iscsi->tx_frames = fw_iscsi_stats->iscsi_tx_packet_cnt; 1085 iscsi->tx_bytes_set = true; 1086 iscsi->tx_bytes = fw_iscsi_stats->iscsi_tx_bytes_cnt; 1087 iscsi->frame_size_set = true; 1088 iscsi->frame_size = qedi->ll2_mtu; 1089 block = qedi_get_nvram_block(qedi); 1090 if (block) { 1091 chap_en = !!(block->generic.ctrl_flags & 1092 NVM_ISCSI_CFG_GEN_CHAP_ENABLED); 1093 mchap_en = !!(block->generic.ctrl_flags & 1094 NVM_ISCSI_CFG_GEN_CHAP_MUTUAL_ENABLED); 1095 1096 iscsi->auth_method_set = (chap_en || mchap_en) ? true : false; 1097 iscsi->auth_method = 1; 1098 if (chap_en) 1099 iscsi->auth_method = 2; 1100 if (mchap_en) 1101 iscsi->auth_method = 3; 1102 1103 iscsi->tx_desc_size_set = true; 1104 iscsi->tx_desc_size = QEDI_SQ_SIZE; 1105 iscsi->rx_desc_size_set = true; 1106 iscsi->rx_desc_size = QEDI_CQ_SIZE; 1107 1108 /* tpgt, hdr digest, data digest */ 1109 rval = qedi_find_boot_info(qedi, iscsi, block); 1110 if (rval) 1111 QEDI_INFO(&qedi->dbg_ctx, QEDI_LOG_INFO, 1112 "Boot target not set"); 1113 } 1114 1115 kfree(fw_iscsi_stats); 1116 exit_get_data: 1117 return; 1118 } 1119 1120 void qedi_schedule_hw_err_handler(void *dev, 1121 enum qed_hw_err_type err_type) 1122 { 1123 struct qedi_ctx *qedi = (struct qedi_ctx *)dev; 1124 unsigned long override_flags = qedi_flags_override; 1125 1126 if (override_flags && test_bit(QEDI_ERR_OVERRIDE_EN, &override_flags)) 1127 qedi->qedi_err_flags = qedi_flags_override; 1128 1129 QEDI_INFO(&qedi->dbg_ctx, QEDI_LOG_INFO, 1130 "HW error handler scheduled, err=%d err_flags=0x%x\n", 1131 err_type, qedi->qedi_err_flags); 1132 1133 switch (err_type) { 1134 case QED_HW_ERR_FAN_FAIL: 1135 schedule_delayed_work(&qedi->board_disable_work, 0); 1136 break; 1137 case QED_HW_ERR_MFW_RESP_FAIL: 1138 case QED_HW_ERR_HW_ATTN: 1139 case QED_HW_ERR_DMAE_FAIL: 1140 case QED_HW_ERR_RAMROD_FAIL: 1141 case QED_HW_ERR_FW_ASSERT: 1142 /* Prevent HW attentions from being reasserted */ 1143 if (test_bit(QEDI_ERR_ATTN_CLR_EN, &qedi->qedi_err_flags)) 1144 qedi_ops->common->attn_clr_enable(qedi->cdev, true); 1145 1146 if (err_type == QED_HW_ERR_RAMROD_FAIL && 1147 test_bit(QEDI_ERR_IS_RECOVERABLE, &qedi->qedi_err_flags)) 1148 qedi_ops->common->recovery_process(qedi->cdev); 1149 1150 break; 1151 default: 1152 break; 1153 } 1154 } 1155 1156 static void qedi_schedule_recovery_handler(void *dev) 1157 { 1158 struct qedi_ctx *qedi = dev; 1159 1160 QEDI_ERR(&qedi->dbg_ctx, "Recovery handler scheduled.\n"); 1161 1162 if (test_and_set_bit(QEDI_IN_RECOVERY, &qedi->flags)) 1163 return; 1164 1165 atomic_set(&qedi->link_state, QEDI_LINK_DOWN); 1166 1167 schedule_delayed_work(&qedi->recovery_work, 0); 1168 } 1169 1170 static void qedi_set_conn_recovery(struct iscsi_cls_session *cls_session) 1171 { 1172 struct iscsi_session *session = cls_session->dd_data; 1173 struct iscsi_conn *conn = session->leadconn; 1174 struct qedi_conn *qedi_conn = conn->dd_data; 1175 1176 qedi_start_conn_recovery(qedi_conn->qedi, qedi_conn); 1177 } 1178 1179 static void qedi_link_update(void *dev, struct qed_link_output *link) 1180 { 1181 struct qedi_ctx *qedi = (struct qedi_ctx *)dev; 1182 1183 if (link->link_up) { 1184 QEDI_INFO(&qedi->dbg_ctx, QEDI_LOG_INFO, "Link Up event.\n"); 1185 atomic_set(&qedi->link_state, QEDI_LINK_UP); 1186 } else { 1187 QEDI_INFO(&qedi->dbg_ctx, QEDI_LOG_INFO, 1188 "Link Down event.\n"); 1189 atomic_set(&qedi->link_state, QEDI_LINK_DOWN); 1190 iscsi_host_for_each_session(qedi->shost, qedi_set_conn_recovery); 1191 } 1192 } 1193 1194 static struct qed_iscsi_cb_ops qedi_cb_ops = { 1195 { 1196 .link_update = qedi_link_update, 1197 .schedule_recovery_handler = qedi_schedule_recovery_handler, 1198 .schedule_hw_err_handler = qedi_schedule_hw_err_handler, 1199 .get_protocol_tlv_data = qedi_get_protocol_tlv_data, 1200 .get_generic_tlv_data = qedi_get_generic_tlv_data, 1201 } 1202 }; 1203 1204 static int qedi_queue_cqe(struct qedi_ctx *qedi, union iscsi_cqe *cqe, 1205 u16 que_idx, struct qedi_percpu_s *p) 1206 { 1207 struct qedi_work *qedi_work; 1208 struct qedi_conn *q_conn; 1209 struct qedi_cmd *qedi_cmd; 1210 u32 iscsi_cid; 1211 int rc = 0; 1212 1213 iscsi_cid = cqe->cqe_common.conn_id; 1214 q_conn = qedi->cid_que.conn_cid_tbl[iscsi_cid]; 1215 if (!q_conn) { 1216 QEDI_WARN(&qedi->dbg_ctx, 1217 "Session no longer exists for cid=0x%x!!\n", 1218 iscsi_cid); 1219 return -1; 1220 } 1221 1222 switch (cqe->cqe_common.cqe_type) { 1223 case ISCSI_CQE_TYPE_SOLICITED: 1224 case ISCSI_CQE_TYPE_SOLICITED_WITH_SENSE: 1225 qedi_cmd = qedi_get_cmd_from_tid(qedi, cqe->cqe_solicited.itid); 1226 if (!qedi_cmd) { 1227 rc = -1; 1228 break; 1229 } 1230 INIT_LIST_HEAD(&qedi_cmd->cqe_work.list); 1231 qedi_cmd->cqe_work.qedi = qedi; 1232 memcpy(&qedi_cmd->cqe_work.cqe, cqe, sizeof(union iscsi_cqe)); 1233 qedi_cmd->cqe_work.que_idx = que_idx; 1234 qedi_cmd->cqe_work.is_solicited = true; 1235 list_add_tail(&qedi_cmd->cqe_work.list, &p->work_list); 1236 break; 1237 case ISCSI_CQE_TYPE_UNSOLICITED: 1238 case ISCSI_CQE_TYPE_DUMMY: 1239 case ISCSI_CQE_TYPE_TASK_CLEANUP: 1240 qedi_work = kzalloc(sizeof(*qedi_work), GFP_ATOMIC); 1241 if (!qedi_work) { 1242 rc = -1; 1243 break; 1244 } 1245 INIT_LIST_HEAD(&qedi_work->list); 1246 qedi_work->qedi = qedi; 1247 memcpy(&qedi_work->cqe, cqe, sizeof(union iscsi_cqe)); 1248 qedi_work->que_idx = que_idx; 1249 qedi_work->is_solicited = false; 1250 list_add_tail(&qedi_work->list, &p->work_list); 1251 break; 1252 default: 1253 rc = -1; 1254 QEDI_ERR(&qedi->dbg_ctx, "FW Error cqe.\n"); 1255 } 1256 return rc; 1257 } 1258 1259 static bool qedi_process_completions(struct qedi_fastpath *fp) 1260 { 1261 struct qedi_ctx *qedi = fp->qedi; 1262 struct qed_sb_info *sb_info = fp->sb_info; 1263 struct status_block *sb = sb_info->sb_virt; 1264 struct qedi_percpu_s *p = NULL; 1265 struct global_queue *que; 1266 u16 prod_idx; 1267 unsigned long flags; 1268 union iscsi_cqe *cqe; 1269 int cpu; 1270 int ret; 1271 1272 /* Get the current firmware producer index */ 1273 prod_idx = sb->pi_array[QEDI_PROTO_CQ_PROD_IDX]; 1274 1275 if (prod_idx >= QEDI_CQ_SIZE) 1276 prod_idx = prod_idx % QEDI_CQ_SIZE; 1277 1278 que = qedi->global_queues[fp->sb_id]; 1279 QEDI_INFO(&qedi->dbg_ctx, QEDI_LOG_IO, 1280 "Before: global queue=%p prod_idx=%d cons_idx=%d, sb_id=%d\n", 1281 que, prod_idx, que->cq_cons_idx, fp->sb_id); 1282 1283 qedi->intr_cpu = fp->sb_id; 1284 cpu = smp_processor_id(); 1285 p = &per_cpu(qedi_percpu, cpu); 1286 1287 if (unlikely(!p->iothread)) 1288 WARN_ON(1); 1289 1290 spin_lock_irqsave(&p->p_work_lock, flags); 1291 while (que->cq_cons_idx != prod_idx) { 1292 cqe = &que->cq[que->cq_cons_idx]; 1293 1294 QEDI_INFO(&qedi->dbg_ctx, QEDI_LOG_IO, 1295 "cqe=%p prod_idx=%d cons_idx=%d.\n", 1296 cqe, prod_idx, que->cq_cons_idx); 1297 1298 ret = qedi_queue_cqe(qedi, cqe, fp->sb_id, p); 1299 if (ret) 1300 QEDI_WARN(&qedi->dbg_ctx, 1301 "Dropping CQE 0x%x for cid=0x%x.\n", 1302 que->cq_cons_idx, cqe->cqe_common.conn_id); 1303 1304 que->cq_cons_idx++; 1305 if (que->cq_cons_idx == QEDI_CQ_SIZE) 1306 que->cq_cons_idx = 0; 1307 } 1308 wake_up_process(p->iothread); 1309 spin_unlock_irqrestore(&p->p_work_lock, flags); 1310 1311 return true; 1312 } 1313 1314 static bool qedi_fp_has_work(struct qedi_fastpath *fp) 1315 { 1316 struct qedi_ctx *qedi = fp->qedi; 1317 struct global_queue *que; 1318 struct qed_sb_info *sb_info = fp->sb_info; 1319 struct status_block *sb = sb_info->sb_virt; 1320 u16 prod_idx; 1321 1322 barrier(); 1323 1324 /* Get the current firmware producer index */ 1325 prod_idx = sb->pi_array[QEDI_PROTO_CQ_PROD_IDX]; 1326 1327 /* Get the pointer to the global CQ this completion is on */ 1328 que = qedi->global_queues[fp->sb_id]; 1329 1330 /* prod idx wrap around uint16 */ 1331 if (prod_idx >= QEDI_CQ_SIZE) 1332 prod_idx = prod_idx % QEDI_CQ_SIZE; 1333 1334 return (que->cq_cons_idx != prod_idx); 1335 } 1336 1337 /* MSI-X fastpath handler code */ 1338 static irqreturn_t qedi_msix_handler(int irq, void *dev_id) 1339 { 1340 struct qedi_fastpath *fp = dev_id; 1341 struct qedi_ctx *qedi = fp->qedi; 1342 bool wake_io_thread = true; 1343 1344 qed_sb_ack(fp->sb_info, IGU_INT_DISABLE, 0); 1345 1346 process_again: 1347 wake_io_thread = qedi_process_completions(fp); 1348 if (wake_io_thread) { 1349 QEDI_INFO(&qedi->dbg_ctx, QEDI_LOG_DISC, 1350 "process already running\n"); 1351 } 1352 1353 if (!qedi_fp_has_work(fp)) 1354 qed_sb_update_sb_idx(fp->sb_info); 1355 1356 /* Check for more work */ 1357 rmb(); 1358 1359 if (!qedi_fp_has_work(fp)) 1360 qed_sb_ack(fp->sb_info, IGU_INT_ENABLE, 1); 1361 else 1362 goto process_again; 1363 1364 return IRQ_HANDLED; 1365 } 1366 1367 /* simd handler for MSI/INTa */ 1368 static void qedi_simd_int_handler(void *cookie) 1369 { 1370 /* Cookie is qedi_ctx struct */ 1371 struct qedi_ctx *qedi = (struct qedi_ctx *)cookie; 1372 1373 QEDI_WARN(&qedi->dbg_ctx, "qedi=%p.\n", qedi); 1374 } 1375 1376 #define QEDI_SIMD_HANDLER_NUM 0 1377 static void qedi_sync_free_irqs(struct qedi_ctx *qedi) 1378 { 1379 int i; 1380 u16 idx; 1381 1382 if (qedi->int_info.msix_cnt) { 1383 for (i = 0; i < qedi->int_info.used_cnt; i++) { 1384 idx = i * qedi->dev_info.common.num_hwfns + 1385 qedi_ops->common->get_affin_hwfn_idx(qedi->cdev); 1386 1387 QEDI_INFO(&qedi->dbg_ctx, QEDI_LOG_INFO, 1388 "Freeing IRQ #%d vector_idx=%d.\n", i, idx); 1389 1390 synchronize_irq(qedi->int_info.msix[idx].vector); 1391 irq_set_affinity_hint(qedi->int_info.msix[idx].vector, 1392 NULL); 1393 free_irq(qedi->int_info.msix[idx].vector, 1394 &qedi->fp_array[i]); 1395 } 1396 } else { 1397 qedi_ops->common->simd_handler_clean(qedi->cdev, 1398 QEDI_SIMD_HANDLER_NUM); 1399 } 1400 1401 qedi->int_info.used_cnt = 0; 1402 qedi_ops->common->set_fp_int(qedi->cdev, 0); 1403 } 1404 1405 static int qedi_request_msix_irq(struct qedi_ctx *qedi) 1406 { 1407 int i, rc, cpu; 1408 u16 idx; 1409 1410 cpu = cpumask_first(cpu_online_mask); 1411 for (i = 0; i < qedi->msix_count; i++) { 1412 idx = i * qedi->dev_info.common.num_hwfns + 1413 qedi_ops->common->get_affin_hwfn_idx(qedi->cdev); 1414 1415 QEDI_INFO(&qedi->dbg_ctx, QEDI_LOG_INFO, 1416 "dev_info: num_hwfns=%d affin_hwfn_idx=%d.\n", 1417 qedi->dev_info.common.num_hwfns, 1418 qedi_ops->common->get_affin_hwfn_idx(qedi->cdev)); 1419 1420 rc = request_irq(qedi->int_info.msix[idx].vector, 1421 qedi_msix_handler, 0, "qedi", 1422 &qedi->fp_array[i]); 1423 if (rc) { 1424 QEDI_WARN(&qedi->dbg_ctx, "request_irq failed.\n"); 1425 qedi_sync_free_irqs(qedi); 1426 return rc; 1427 } 1428 qedi->int_info.used_cnt++; 1429 rc = irq_set_affinity_hint(qedi->int_info.msix[idx].vector, 1430 get_cpu_mask(cpu)); 1431 cpu = cpumask_next(cpu, cpu_online_mask); 1432 } 1433 1434 return 0; 1435 } 1436 1437 static int qedi_setup_int(struct qedi_ctx *qedi) 1438 { 1439 int rc = 0; 1440 1441 rc = qedi_ops->common->set_fp_int(qedi->cdev, qedi->num_queues); 1442 if (rc < 0) 1443 goto exit_setup_int; 1444 1445 qedi->msix_count = rc; 1446 1447 rc = qedi_ops->common->get_fp_int(qedi->cdev, &qedi->int_info); 1448 if (rc) 1449 goto exit_setup_int; 1450 1451 QEDI_INFO(&qedi->dbg_ctx, QEDI_LOG_DISC, 1452 "Number of msix_cnt = 0x%x num of cpus = 0x%x\n", 1453 qedi->int_info.msix_cnt, num_online_cpus()); 1454 1455 if (qedi->int_info.msix_cnt) { 1456 rc = qedi_request_msix_irq(qedi); 1457 goto exit_setup_int; 1458 } else { 1459 qedi_ops->common->simd_handler_config(qedi->cdev, &qedi, 1460 QEDI_SIMD_HANDLER_NUM, 1461 qedi_simd_int_handler); 1462 qedi->int_info.used_cnt = 1; 1463 } 1464 1465 exit_setup_int: 1466 return rc; 1467 } 1468 1469 static void qedi_free_nvm_iscsi_cfg(struct qedi_ctx *qedi) 1470 { 1471 if (qedi->iscsi_image) 1472 dma_free_coherent(&qedi->pdev->dev, 1473 sizeof(struct qedi_nvm_iscsi_image), 1474 qedi->iscsi_image, qedi->nvm_buf_dma); 1475 } 1476 1477 static int qedi_alloc_nvm_iscsi_cfg(struct qedi_ctx *qedi) 1478 { 1479 qedi->iscsi_image = dma_alloc_coherent(&qedi->pdev->dev, 1480 sizeof(struct qedi_nvm_iscsi_image), 1481 &qedi->nvm_buf_dma, GFP_KERNEL); 1482 if (!qedi->iscsi_image) { 1483 QEDI_ERR(&qedi->dbg_ctx, "Could not allocate NVM BUF.\n"); 1484 return -ENOMEM; 1485 } 1486 QEDI_INFO(&qedi->dbg_ctx, QEDI_LOG_INFO, 1487 "NVM BUF addr=0x%p dma=0x%llx.\n", qedi->iscsi_image, 1488 qedi->nvm_buf_dma); 1489 1490 return 0; 1491 } 1492 1493 static void qedi_free_bdq(struct qedi_ctx *qedi) 1494 { 1495 int i; 1496 1497 if (qedi->bdq_pbl_list) 1498 dma_free_coherent(&qedi->pdev->dev, QEDI_PAGE_SIZE, 1499 qedi->bdq_pbl_list, qedi->bdq_pbl_list_dma); 1500 1501 if (qedi->bdq_pbl) 1502 dma_free_coherent(&qedi->pdev->dev, qedi->bdq_pbl_mem_size, 1503 qedi->bdq_pbl, qedi->bdq_pbl_dma); 1504 1505 for (i = 0; i < QEDI_BDQ_NUM; i++) { 1506 if (qedi->bdq[i].buf_addr) { 1507 dma_free_coherent(&qedi->pdev->dev, QEDI_BDQ_BUF_SIZE, 1508 qedi->bdq[i].buf_addr, 1509 qedi->bdq[i].buf_dma); 1510 } 1511 } 1512 } 1513 1514 static void qedi_free_global_queues(struct qedi_ctx *qedi) 1515 { 1516 int i; 1517 struct global_queue **gl = qedi->global_queues; 1518 1519 for (i = 0; i < qedi->num_queues; i++) { 1520 if (!gl[i]) 1521 continue; 1522 1523 if (gl[i]->cq) 1524 dma_free_coherent(&qedi->pdev->dev, gl[i]->cq_mem_size, 1525 gl[i]->cq, gl[i]->cq_dma); 1526 if (gl[i]->cq_pbl) 1527 dma_free_coherent(&qedi->pdev->dev, gl[i]->cq_pbl_size, 1528 gl[i]->cq_pbl, gl[i]->cq_pbl_dma); 1529 1530 kfree(gl[i]); 1531 } 1532 qedi_free_bdq(qedi); 1533 qedi_free_nvm_iscsi_cfg(qedi); 1534 } 1535 1536 static int qedi_alloc_bdq(struct qedi_ctx *qedi) 1537 { 1538 int i; 1539 struct scsi_bd *pbl; 1540 u64 *list; 1541 dma_addr_t page; 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 page = qedi->bdq_pbl_list_dma; 1612 for (i = 0; i < qedi->bdq_pbl_list_num_entries; i++) { 1613 *list = qedi->bdq_pbl_dma; 1614 list++; 1615 page += QEDI_PAGE_SIZE; 1616 } 1617 1618 return 0; 1619 } 1620 1621 static int qedi_alloc_global_queues(struct qedi_ctx *qedi) 1622 { 1623 u32 *list; 1624 int i; 1625 int status; 1626 u32 *pbl; 1627 dma_addr_t page; 1628 int num_pages; 1629 1630 /* 1631 * Number of global queues (CQ / RQ). This should 1632 * be <= number of available MSIX vectors for the PF 1633 */ 1634 if (!qedi->num_queues) { 1635 QEDI_ERR(&qedi->dbg_ctx, "No MSI-X vectors available!\n"); 1636 return -ENOMEM; 1637 } 1638 1639 /* Make sure we allocated the PBL that will contain the physical 1640 * addresses of our queues 1641 */ 1642 if (!qedi->p_cpuq) { 1643 status = -EINVAL; 1644 goto mem_alloc_failure; 1645 } 1646 1647 qedi->global_queues = kzalloc((sizeof(struct global_queue *) * 1648 qedi->num_queues), GFP_KERNEL); 1649 if (!qedi->global_queues) { 1650 QEDI_ERR(&qedi->dbg_ctx, 1651 "Unable to allocate global queues array ptr memory\n"); 1652 return -ENOMEM; 1653 } 1654 QEDI_INFO(&qedi->dbg_ctx, QEDI_LOG_DISC, 1655 "qedi->global_queues=%p.\n", qedi->global_queues); 1656 1657 /* Allocate DMA coherent buffers for BDQ */ 1658 status = qedi_alloc_bdq(qedi); 1659 if (status) 1660 goto mem_alloc_failure; 1661 1662 /* Allocate DMA coherent buffers for NVM_ISCSI_CFG */ 1663 status = qedi_alloc_nvm_iscsi_cfg(qedi); 1664 if (status) 1665 goto mem_alloc_failure; 1666 1667 /* Allocate a CQ and an associated PBL for each MSI-X 1668 * vector. 1669 */ 1670 for (i = 0; i < qedi->num_queues; i++) { 1671 qedi->global_queues[i] = 1672 kzalloc(sizeof(*qedi->global_queues[0]), 1673 GFP_KERNEL); 1674 if (!qedi->global_queues[i]) { 1675 QEDI_ERR(&qedi->dbg_ctx, 1676 "Unable to allocation global queue %d.\n", i); 1677 status = -ENOMEM; 1678 goto mem_alloc_failure; 1679 } 1680 1681 qedi->global_queues[i]->cq_mem_size = 1682 (QEDI_CQ_SIZE + 8) * sizeof(union iscsi_cqe); 1683 qedi->global_queues[i]->cq_mem_size = 1684 (qedi->global_queues[i]->cq_mem_size + 1685 (QEDI_PAGE_SIZE - 1)); 1686 1687 qedi->global_queues[i]->cq_pbl_size = 1688 (qedi->global_queues[i]->cq_mem_size / 1689 QEDI_PAGE_SIZE) * sizeof(void *); 1690 qedi->global_queues[i]->cq_pbl_size = 1691 (qedi->global_queues[i]->cq_pbl_size + 1692 (QEDI_PAGE_SIZE - 1)); 1693 1694 qedi->global_queues[i]->cq = dma_alloc_coherent(&qedi->pdev->dev, 1695 qedi->global_queues[i]->cq_mem_size, 1696 &qedi->global_queues[i]->cq_dma, 1697 GFP_KERNEL); 1698 1699 if (!qedi->global_queues[i]->cq) { 1700 QEDI_WARN(&qedi->dbg_ctx, 1701 "Could not allocate cq.\n"); 1702 status = -ENOMEM; 1703 goto mem_alloc_failure; 1704 } 1705 qedi->global_queues[i]->cq_pbl = dma_alloc_coherent(&qedi->pdev->dev, 1706 qedi->global_queues[i]->cq_pbl_size, 1707 &qedi->global_queues[i]->cq_pbl_dma, 1708 GFP_KERNEL); 1709 1710 if (!qedi->global_queues[i]->cq_pbl) { 1711 QEDI_WARN(&qedi->dbg_ctx, 1712 "Could not allocate cq PBL.\n"); 1713 status = -ENOMEM; 1714 goto mem_alloc_failure; 1715 } 1716 1717 /* Create PBL */ 1718 num_pages = qedi->global_queues[i]->cq_mem_size / 1719 QEDI_PAGE_SIZE; 1720 page = qedi->global_queues[i]->cq_dma; 1721 pbl = (u32 *)qedi->global_queues[i]->cq_pbl; 1722 1723 while (num_pages--) { 1724 *pbl = (u32)page; 1725 pbl++; 1726 *pbl = (u32)((u64)page >> 32); 1727 pbl++; 1728 page += QEDI_PAGE_SIZE; 1729 } 1730 } 1731 1732 list = (u32 *)qedi->p_cpuq; 1733 1734 /* 1735 * The list is built as follows: CQ#0 PBL pointer, RQ#0 PBL pointer, 1736 * CQ#1 PBL pointer, RQ#1 PBL pointer, etc. Each PBL pointer points 1737 * to the physical address which contains an array of pointers to the 1738 * physical addresses of the specific queue pages. 1739 */ 1740 for (i = 0; i < qedi->num_queues; i++) { 1741 *list = (u32)qedi->global_queues[i]->cq_pbl_dma; 1742 list++; 1743 *list = (u32)((u64)qedi->global_queues[i]->cq_pbl_dma >> 32); 1744 list++; 1745 1746 *list = (u32)0; 1747 list++; 1748 *list = (u32)((u64)0 >> 32); 1749 list++; 1750 } 1751 1752 return 0; 1753 1754 mem_alloc_failure: 1755 qedi_free_global_queues(qedi); 1756 return status; 1757 } 1758 1759 int qedi_alloc_sq(struct qedi_ctx *qedi, struct qedi_endpoint *ep) 1760 { 1761 int rval = 0; 1762 u32 *pbl; 1763 dma_addr_t page; 1764 int num_pages; 1765 1766 if (!ep) 1767 return -EIO; 1768 1769 /* Calculate appropriate queue and PBL sizes */ 1770 ep->sq_mem_size = QEDI_SQ_SIZE * sizeof(struct iscsi_wqe); 1771 ep->sq_mem_size += QEDI_PAGE_SIZE - 1; 1772 1773 ep->sq_pbl_size = (ep->sq_mem_size / QEDI_PAGE_SIZE) * sizeof(void *); 1774 ep->sq_pbl_size = ep->sq_pbl_size + QEDI_PAGE_SIZE; 1775 1776 ep->sq = dma_alloc_coherent(&qedi->pdev->dev, ep->sq_mem_size, 1777 &ep->sq_dma, GFP_KERNEL); 1778 if (!ep->sq) { 1779 QEDI_WARN(&qedi->dbg_ctx, 1780 "Could not allocate send queue.\n"); 1781 rval = -ENOMEM; 1782 goto out; 1783 } 1784 ep->sq_pbl = dma_alloc_coherent(&qedi->pdev->dev, ep->sq_pbl_size, 1785 &ep->sq_pbl_dma, GFP_KERNEL); 1786 if (!ep->sq_pbl) { 1787 QEDI_WARN(&qedi->dbg_ctx, 1788 "Could not allocate send queue PBL.\n"); 1789 rval = -ENOMEM; 1790 goto out_free_sq; 1791 } 1792 1793 /* Create PBL */ 1794 num_pages = ep->sq_mem_size / QEDI_PAGE_SIZE; 1795 page = ep->sq_dma; 1796 pbl = (u32 *)ep->sq_pbl; 1797 1798 while (num_pages--) { 1799 *pbl = (u32)page; 1800 pbl++; 1801 *pbl = (u32)((u64)page >> 32); 1802 pbl++; 1803 page += QEDI_PAGE_SIZE; 1804 } 1805 1806 return rval; 1807 1808 out_free_sq: 1809 dma_free_coherent(&qedi->pdev->dev, ep->sq_mem_size, ep->sq, 1810 ep->sq_dma); 1811 out: 1812 return rval; 1813 } 1814 1815 void qedi_free_sq(struct qedi_ctx *qedi, struct qedi_endpoint *ep) 1816 { 1817 if (ep->sq_pbl) 1818 dma_free_coherent(&qedi->pdev->dev, ep->sq_pbl_size, ep->sq_pbl, 1819 ep->sq_pbl_dma); 1820 if (ep->sq) 1821 dma_free_coherent(&qedi->pdev->dev, ep->sq_mem_size, ep->sq, 1822 ep->sq_dma); 1823 } 1824 1825 int qedi_get_task_idx(struct qedi_ctx *qedi) 1826 { 1827 s16 tmp_idx; 1828 1829 again: 1830 tmp_idx = find_first_zero_bit(qedi->task_idx_map, 1831 MAX_ISCSI_TASK_ENTRIES); 1832 1833 if (tmp_idx >= MAX_ISCSI_TASK_ENTRIES) { 1834 QEDI_ERR(&qedi->dbg_ctx, "FW task context pool is full.\n"); 1835 tmp_idx = -1; 1836 goto err_idx; 1837 } 1838 1839 if (test_and_set_bit(tmp_idx, qedi->task_idx_map)) 1840 goto again; 1841 1842 err_idx: 1843 return tmp_idx; 1844 } 1845 1846 void qedi_clear_task_idx(struct qedi_ctx *qedi, int idx) 1847 { 1848 if (!test_and_clear_bit(idx, qedi->task_idx_map)) 1849 QEDI_ERR(&qedi->dbg_ctx, 1850 "FW task context, already cleared, tid=0x%x\n", idx); 1851 } 1852 1853 void qedi_update_itt_map(struct qedi_ctx *qedi, u32 tid, u32 proto_itt, 1854 struct qedi_cmd *cmd) 1855 { 1856 qedi->itt_map[tid].itt = proto_itt; 1857 qedi->itt_map[tid].p_cmd = cmd; 1858 1859 QEDI_INFO(&qedi->dbg_ctx, QEDI_LOG_CONN, 1860 "update itt map tid=0x%x, with proto itt=0x%x\n", tid, 1861 qedi->itt_map[tid].itt); 1862 } 1863 1864 void qedi_get_task_tid(struct qedi_ctx *qedi, u32 itt, s16 *tid) 1865 { 1866 u16 i; 1867 1868 for (i = 0; i < MAX_ISCSI_TASK_ENTRIES; i++) { 1869 if (qedi->itt_map[i].itt == itt) { 1870 *tid = i; 1871 QEDI_INFO(&qedi->dbg_ctx, QEDI_LOG_CONN, 1872 "Ref itt=0x%x, found at tid=0x%x\n", 1873 itt, *tid); 1874 return; 1875 } 1876 } 1877 1878 WARN_ON(1); 1879 } 1880 1881 void qedi_get_proto_itt(struct qedi_ctx *qedi, u32 tid, u32 *proto_itt) 1882 { 1883 *proto_itt = qedi->itt_map[tid].itt; 1884 QEDI_INFO(&qedi->dbg_ctx, QEDI_LOG_CONN, 1885 "Get itt map tid [0x%x with proto itt[0x%x]", 1886 tid, *proto_itt); 1887 } 1888 1889 struct qedi_cmd *qedi_get_cmd_from_tid(struct qedi_ctx *qedi, u32 tid) 1890 { 1891 struct qedi_cmd *cmd = NULL; 1892 1893 if (tid >= MAX_ISCSI_TASK_ENTRIES) 1894 return NULL; 1895 1896 cmd = qedi->itt_map[tid].p_cmd; 1897 if (cmd->task_id != tid) 1898 return NULL; 1899 1900 qedi->itt_map[tid].p_cmd = NULL; 1901 1902 return cmd; 1903 } 1904 1905 static int qedi_alloc_itt(struct qedi_ctx *qedi) 1906 { 1907 qedi->itt_map = kcalloc(MAX_ISCSI_TASK_ENTRIES, 1908 sizeof(struct qedi_itt_map), GFP_KERNEL); 1909 if (!qedi->itt_map) { 1910 QEDI_ERR(&qedi->dbg_ctx, 1911 "Unable to allocate itt map array memory\n"); 1912 return -ENOMEM; 1913 } 1914 return 0; 1915 } 1916 1917 static void qedi_free_itt(struct qedi_ctx *qedi) 1918 { 1919 kfree(qedi->itt_map); 1920 } 1921 1922 static struct qed_ll2_cb_ops qedi_ll2_cb_ops = { 1923 .rx_cb = qedi_ll2_rx, 1924 .tx_cb = NULL, 1925 }; 1926 1927 static int qedi_percpu_io_thread(void *arg) 1928 { 1929 struct qedi_percpu_s *p = arg; 1930 struct qedi_work *work, *tmp; 1931 unsigned long flags; 1932 LIST_HEAD(work_list); 1933 1934 set_user_nice(current, -20); 1935 1936 while (!kthread_should_stop()) { 1937 spin_lock_irqsave(&p->p_work_lock, flags); 1938 while (!list_empty(&p->work_list)) { 1939 list_splice_init(&p->work_list, &work_list); 1940 spin_unlock_irqrestore(&p->p_work_lock, flags); 1941 1942 list_for_each_entry_safe(work, tmp, &work_list, list) { 1943 list_del_init(&work->list); 1944 qedi_fp_process_cqes(work); 1945 if (!work->is_solicited) 1946 kfree(work); 1947 } 1948 cond_resched(); 1949 spin_lock_irqsave(&p->p_work_lock, flags); 1950 } 1951 set_current_state(TASK_INTERRUPTIBLE); 1952 spin_unlock_irqrestore(&p->p_work_lock, flags); 1953 schedule(); 1954 } 1955 __set_current_state(TASK_RUNNING); 1956 1957 return 0; 1958 } 1959 1960 static int qedi_cpu_online(unsigned int cpu) 1961 { 1962 struct qedi_percpu_s *p = this_cpu_ptr(&qedi_percpu); 1963 struct task_struct *thread; 1964 1965 thread = kthread_create_on_node(qedi_percpu_io_thread, (void *)p, 1966 cpu_to_node(cpu), 1967 "qedi_thread/%d", cpu); 1968 if (IS_ERR(thread)) 1969 return PTR_ERR(thread); 1970 1971 kthread_bind(thread, cpu); 1972 p->iothread = thread; 1973 wake_up_process(thread); 1974 return 0; 1975 } 1976 1977 static int qedi_cpu_offline(unsigned int cpu) 1978 { 1979 struct qedi_percpu_s *p = this_cpu_ptr(&qedi_percpu); 1980 struct qedi_work *work, *tmp; 1981 struct task_struct *thread; 1982 1983 spin_lock_bh(&p->p_work_lock); 1984 thread = p->iothread; 1985 p->iothread = NULL; 1986 1987 list_for_each_entry_safe(work, tmp, &p->work_list, list) { 1988 list_del_init(&work->list); 1989 qedi_fp_process_cqes(work); 1990 if (!work->is_solicited) 1991 kfree(work); 1992 } 1993 1994 spin_unlock_bh(&p->p_work_lock); 1995 if (thread) 1996 kthread_stop(thread); 1997 return 0; 1998 } 1999 2000 void qedi_reset_host_mtu(struct qedi_ctx *qedi, u16 mtu) 2001 { 2002 struct qed_ll2_params params; 2003 2004 qedi_recover_all_conns(qedi); 2005 2006 qedi_ops->ll2->stop(qedi->cdev); 2007 qedi_ll2_free_skbs(qedi); 2008 2009 QEDI_INFO(&qedi->dbg_ctx, QEDI_LOG_INFO, "old MTU %u, new MTU %u\n", 2010 qedi->ll2_mtu, mtu); 2011 memset(¶ms, 0, sizeof(params)); 2012 qedi->ll2_mtu = mtu; 2013 params.mtu = qedi->ll2_mtu + IPV6_HDR_LEN + TCP_HDR_LEN; 2014 params.drop_ttl0_packets = 0; 2015 params.rx_vlan_stripping = 1; 2016 ether_addr_copy(params.ll2_mac_address, qedi->dev_info.common.hw_mac); 2017 qedi_ops->ll2->start(qedi->cdev, ¶ms); 2018 } 2019 2020 /* 2021 * qedi_get_nvram_block: - Scan through the iSCSI NVRAM block (while accounting 2022 * for gaps) for the matching absolute-pf-id of the QEDI device. 2023 */ 2024 static struct nvm_iscsi_block * 2025 qedi_get_nvram_block(struct qedi_ctx *qedi) 2026 { 2027 int i; 2028 u8 pf; 2029 u32 flags; 2030 struct nvm_iscsi_block *block; 2031 2032 pf = qedi->dev_info.common.abs_pf_id; 2033 block = &qedi->iscsi_image->iscsi_cfg.block[0]; 2034 for (i = 0; i < NUM_OF_ISCSI_PF_SUPPORTED; i++, block++) { 2035 flags = ((block->id) & NVM_ISCSI_CFG_BLK_CTRL_FLAG_MASK) >> 2036 NVM_ISCSI_CFG_BLK_CTRL_FLAG_OFFSET; 2037 if (flags & (NVM_ISCSI_CFG_BLK_CTRL_FLAG_IS_NOT_EMPTY | 2038 NVM_ISCSI_CFG_BLK_CTRL_FLAG_PF_MAPPED) && 2039 (pf == (block->id & NVM_ISCSI_CFG_BLK_MAPPED_PF_ID_MASK) 2040 >> NVM_ISCSI_CFG_BLK_MAPPED_PF_ID_OFFSET)) 2041 return block; 2042 } 2043 return NULL; 2044 } 2045 2046 static ssize_t qedi_show_boot_eth_info(void *data, int type, char *buf) 2047 { 2048 struct qedi_ctx *qedi = data; 2049 struct nvm_iscsi_initiator *initiator; 2050 int rc = 1; 2051 u32 ipv6_en, dhcp_en, ip_len; 2052 struct nvm_iscsi_block *block; 2053 char *fmt, *ip, *sub, *gw; 2054 2055 block = qedi_get_nvram_block(qedi); 2056 if (!block) 2057 return 0; 2058 2059 initiator = &block->initiator; 2060 ipv6_en = block->generic.ctrl_flags & 2061 NVM_ISCSI_CFG_GEN_IPV6_ENABLED; 2062 dhcp_en = block->generic.ctrl_flags & 2063 NVM_ISCSI_CFG_GEN_DHCP_TCPIP_CONFIG_ENABLED; 2064 /* Static IP assignments. */ 2065 fmt = ipv6_en ? "%pI6\n" : "%pI4\n"; 2066 ip = ipv6_en ? initiator->ipv6.addr.byte : initiator->ipv4.addr.byte; 2067 ip_len = ipv6_en ? IPV6_LEN : IPV4_LEN; 2068 sub = ipv6_en ? initiator->ipv6.subnet_mask.byte : 2069 initiator->ipv4.subnet_mask.byte; 2070 gw = ipv6_en ? initiator->ipv6.gateway.byte : 2071 initiator->ipv4.gateway.byte; 2072 /* DHCP IP adjustments. */ 2073 fmt = dhcp_en ? "%s\n" : fmt; 2074 if (dhcp_en) { 2075 ip = ipv6_en ? "0::0" : "0.0.0.0"; 2076 sub = ip; 2077 gw = ip; 2078 ip_len = ipv6_en ? 5 : 8; 2079 } 2080 2081 switch (type) { 2082 case ISCSI_BOOT_ETH_IP_ADDR: 2083 rc = snprintf(buf, ip_len, fmt, ip); 2084 break; 2085 case ISCSI_BOOT_ETH_SUBNET_MASK: 2086 rc = snprintf(buf, ip_len, fmt, sub); 2087 break; 2088 case ISCSI_BOOT_ETH_GATEWAY: 2089 rc = snprintf(buf, ip_len, fmt, gw); 2090 break; 2091 case ISCSI_BOOT_ETH_FLAGS: 2092 rc = snprintf(buf, 3, "%hhd\n", 2093 SYSFS_FLAG_FW_SEL_BOOT); 2094 break; 2095 case ISCSI_BOOT_ETH_INDEX: 2096 rc = snprintf(buf, 3, "0\n"); 2097 break; 2098 case ISCSI_BOOT_ETH_MAC: 2099 rc = sysfs_format_mac(buf, qedi->mac, ETH_ALEN); 2100 break; 2101 case ISCSI_BOOT_ETH_VLAN: 2102 rc = snprintf(buf, 12, "%d\n", 2103 GET_FIELD2(initiator->generic_cont0, 2104 NVM_ISCSI_CFG_INITIATOR_VLAN)); 2105 break; 2106 case ISCSI_BOOT_ETH_ORIGIN: 2107 if (dhcp_en) 2108 rc = snprintf(buf, 3, "3\n"); 2109 break; 2110 default: 2111 rc = 0; 2112 break; 2113 } 2114 2115 return rc; 2116 } 2117 2118 static umode_t qedi_eth_get_attr_visibility(void *data, int type) 2119 { 2120 int rc = 1; 2121 2122 switch (type) { 2123 case ISCSI_BOOT_ETH_FLAGS: 2124 case ISCSI_BOOT_ETH_MAC: 2125 case ISCSI_BOOT_ETH_INDEX: 2126 case ISCSI_BOOT_ETH_IP_ADDR: 2127 case ISCSI_BOOT_ETH_SUBNET_MASK: 2128 case ISCSI_BOOT_ETH_GATEWAY: 2129 case ISCSI_BOOT_ETH_ORIGIN: 2130 case ISCSI_BOOT_ETH_VLAN: 2131 rc = 0444; 2132 break; 2133 default: 2134 rc = 0; 2135 break; 2136 } 2137 return rc; 2138 } 2139 2140 static ssize_t qedi_show_boot_ini_info(void *data, int type, char *buf) 2141 { 2142 struct qedi_ctx *qedi = data; 2143 struct nvm_iscsi_initiator *initiator; 2144 int rc; 2145 struct nvm_iscsi_block *block; 2146 2147 block = qedi_get_nvram_block(qedi); 2148 if (!block) 2149 return 0; 2150 2151 initiator = &block->initiator; 2152 2153 switch (type) { 2154 case ISCSI_BOOT_INI_INITIATOR_NAME: 2155 rc = sprintf(buf, "%.*s\n", NVM_ISCSI_CFG_ISCSI_NAME_MAX_LEN, 2156 initiator->initiator_name.byte); 2157 break; 2158 default: 2159 rc = 0; 2160 break; 2161 } 2162 return rc; 2163 } 2164 2165 static umode_t qedi_ini_get_attr_visibility(void *data, int type) 2166 { 2167 int rc; 2168 2169 switch (type) { 2170 case ISCSI_BOOT_INI_INITIATOR_NAME: 2171 rc = 0444; 2172 break; 2173 default: 2174 rc = 0; 2175 break; 2176 } 2177 return rc; 2178 } 2179 2180 static ssize_t 2181 qedi_show_boot_tgt_info(struct qedi_ctx *qedi, int type, 2182 char *buf, enum qedi_nvm_tgts idx) 2183 { 2184 int rc = 1; 2185 u32 ctrl_flags, ipv6_en, chap_en, mchap_en, ip_len; 2186 struct nvm_iscsi_block *block; 2187 char *chap_name, *chap_secret; 2188 char *mchap_name, *mchap_secret; 2189 2190 block = qedi_get_nvram_block(qedi); 2191 if (!block) 2192 goto exit_show_tgt_info; 2193 2194 QEDI_INFO(&qedi->dbg_ctx, QEDI_LOG_EVT, 2195 "Port:%d, tgt_idx:%d\n", 2196 GET_FIELD2(block->id, NVM_ISCSI_CFG_BLK_MAPPED_PF_ID), idx); 2197 2198 ctrl_flags = block->target[idx].ctrl_flags & 2199 NVM_ISCSI_CFG_TARGET_ENABLED; 2200 2201 if (!ctrl_flags) { 2202 QEDI_INFO(&qedi->dbg_ctx, QEDI_LOG_EVT, 2203 "Target disabled\n"); 2204 goto exit_show_tgt_info; 2205 } 2206 2207 ipv6_en = block->generic.ctrl_flags & 2208 NVM_ISCSI_CFG_GEN_IPV6_ENABLED; 2209 ip_len = ipv6_en ? IPV6_LEN : IPV4_LEN; 2210 chap_en = block->generic.ctrl_flags & 2211 NVM_ISCSI_CFG_GEN_CHAP_ENABLED; 2212 chap_name = chap_en ? block->initiator.chap_name.byte : NULL; 2213 chap_secret = chap_en ? block->initiator.chap_password.byte : NULL; 2214 2215 mchap_en = block->generic.ctrl_flags & 2216 NVM_ISCSI_CFG_GEN_CHAP_MUTUAL_ENABLED; 2217 mchap_name = mchap_en ? block->target[idx].chap_name.byte : NULL; 2218 mchap_secret = mchap_en ? block->target[idx].chap_password.byte : NULL; 2219 2220 switch (type) { 2221 case ISCSI_BOOT_TGT_NAME: 2222 rc = sprintf(buf, "%.*s\n", NVM_ISCSI_CFG_ISCSI_NAME_MAX_LEN, 2223 block->target[idx].target_name.byte); 2224 break; 2225 case ISCSI_BOOT_TGT_IP_ADDR: 2226 if (ipv6_en) 2227 rc = snprintf(buf, ip_len, "%pI6\n", 2228 block->target[idx].ipv6_addr.byte); 2229 else 2230 rc = snprintf(buf, ip_len, "%pI4\n", 2231 block->target[idx].ipv4_addr.byte); 2232 break; 2233 case ISCSI_BOOT_TGT_PORT: 2234 rc = snprintf(buf, 12, "%d\n", 2235 GET_FIELD2(block->target[idx].generic_cont0, 2236 NVM_ISCSI_CFG_TARGET_TCP_PORT)); 2237 break; 2238 case ISCSI_BOOT_TGT_LUN: 2239 rc = snprintf(buf, 22, "%.*d\n", 2240 block->target[idx].lun.value[1], 2241 block->target[idx].lun.value[0]); 2242 break; 2243 case ISCSI_BOOT_TGT_CHAP_NAME: 2244 rc = sprintf(buf, "%.*s\n", NVM_ISCSI_CFG_CHAP_NAME_MAX_LEN, 2245 chap_name); 2246 break; 2247 case ISCSI_BOOT_TGT_CHAP_SECRET: 2248 rc = sprintf(buf, "%.*s\n", NVM_ISCSI_CFG_CHAP_PWD_MAX_LEN, 2249 chap_secret); 2250 break; 2251 case ISCSI_BOOT_TGT_REV_CHAP_NAME: 2252 rc = sprintf(buf, "%.*s\n", NVM_ISCSI_CFG_CHAP_NAME_MAX_LEN, 2253 mchap_name); 2254 break; 2255 case ISCSI_BOOT_TGT_REV_CHAP_SECRET: 2256 rc = sprintf(buf, "%.*s\n", NVM_ISCSI_CFG_CHAP_PWD_MAX_LEN, 2257 mchap_secret); 2258 break; 2259 case ISCSI_BOOT_TGT_FLAGS: 2260 rc = snprintf(buf, 3, "%hhd\n", SYSFS_FLAG_FW_SEL_BOOT); 2261 break; 2262 case ISCSI_BOOT_TGT_NIC_ASSOC: 2263 rc = snprintf(buf, 3, "0\n"); 2264 break; 2265 default: 2266 rc = 0; 2267 break; 2268 } 2269 2270 exit_show_tgt_info: 2271 return rc; 2272 } 2273 2274 static ssize_t qedi_show_boot_tgt_pri_info(void *data, int type, char *buf) 2275 { 2276 struct qedi_ctx *qedi = data; 2277 2278 return qedi_show_boot_tgt_info(qedi, type, buf, QEDI_NVM_TGT_PRI); 2279 } 2280 2281 static ssize_t qedi_show_boot_tgt_sec_info(void *data, int type, char *buf) 2282 { 2283 struct qedi_ctx *qedi = data; 2284 2285 return qedi_show_boot_tgt_info(qedi, type, buf, QEDI_NVM_TGT_SEC); 2286 } 2287 2288 static umode_t qedi_tgt_get_attr_visibility(void *data, int type) 2289 { 2290 int rc; 2291 2292 switch (type) { 2293 case ISCSI_BOOT_TGT_NAME: 2294 case ISCSI_BOOT_TGT_IP_ADDR: 2295 case ISCSI_BOOT_TGT_PORT: 2296 case ISCSI_BOOT_TGT_LUN: 2297 case ISCSI_BOOT_TGT_CHAP_NAME: 2298 case ISCSI_BOOT_TGT_CHAP_SECRET: 2299 case ISCSI_BOOT_TGT_REV_CHAP_NAME: 2300 case ISCSI_BOOT_TGT_REV_CHAP_SECRET: 2301 case ISCSI_BOOT_TGT_NIC_ASSOC: 2302 case ISCSI_BOOT_TGT_FLAGS: 2303 rc = 0444; 2304 break; 2305 default: 2306 rc = 0; 2307 break; 2308 } 2309 return rc; 2310 } 2311 2312 static void qedi_boot_release(void *data) 2313 { 2314 struct qedi_ctx *qedi = data; 2315 2316 scsi_host_put(qedi->shost); 2317 } 2318 2319 static int qedi_get_boot_info(struct qedi_ctx *qedi) 2320 { 2321 int ret = 1; 2322 2323 QEDI_INFO(&qedi->dbg_ctx, QEDI_LOG_INFO, 2324 "Get NVM iSCSI CFG image\n"); 2325 ret = qedi_ops->common->nvm_get_image(qedi->cdev, 2326 QED_NVM_IMAGE_ISCSI_CFG, 2327 (char *)qedi->iscsi_image, 2328 sizeof(struct qedi_nvm_iscsi_image)); 2329 if (ret) 2330 QEDI_ERR(&qedi->dbg_ctx, 2331 "Could not get NVM image. ret = %d\n", ret); 2332 2333 return ret; 2334 } 2335 2336 static int qedi_setup_boot_info(struct qedi_ctx *qedi) 2337 { 2338 struct iscsi_boot_kobj *boot_kobj; 2339 2340 if (qedi_get_boot_info(qedi)) 2341 return -EPERM; 2342 2343 qedi->boot_kset = iscsi_boot_create_host_kset(qedi->shost->host_no); 2344 if (!qedi->boot_kset) 2345 goto kset_free; 2346 2347 if (!scsi_host_get(qedi->shost)) 2348 goto kset_free; 2349 2350 boot_kobj = iscsi_boot_create_target(qedi->boot_kset, 0, qedi, 2351 qedi_show_boot_tgt_pri_info, 2352 qedi_tgt_get_attr_visibility, 2353 qedi_boot_release); 2354 if (!boot_kobj) 2355 goto put_host; 2356 2357 if (!scsi_host_get(qedi->shost)) 2358 goto kset_free; 2359 2360 boot_kobj = iscsi_boot_create_target(qedi->boot_kset, 1, qedi, 2361 qedi_show_boot_tgt_sec_info, 2362 qedi_tgt_get_attr_visibility, 2363 qedi_boot_release); 2364 if (!boot_kobj) 2365 goto put_host; 2366 2367 if (!scsi_host_get(qedi->shost)) 2368 goto kset_free; 2369 2370 boot_kobj = iscsi_boot_create_initiator(qedi->boot_kset, 0, qedi, 2371 qedi_show_boot_ini_info, 2372 qedi_ini_get_attr_visibility, 2373 qedi_boot_release); 2374 if (!boot_kobj) 2375 goto put_host; 2376 2377 if (!scsi_host_get(qedi->shost)) 2378 goto kset_free; 2379 2380 boot_kobj = iscsi_boot_create_ethernet(qedi->boot_kset, 0, qedi, 2381 qedi_show_boot_eth_info, 2382 qedi_eth_get_attr_visibility, 2383 qedi_boot_release); 2384 if (!boot_kobj) 2385 goto put_host; 2386 2387 return 0; 2388 2389 put_host: 2390 scsi_host_put(qedi->shost); 2391 kset_free: 2392 iscsi_boot_destroy_kset(qedi->boot_kset); 2393 return -ENOMEM; 2394 } 2395 2396 static pci_ers_result_t qedi_io_error_detected(struct pci_dev *pdev, 2397 pci_channel_state_t state) 2398 { 2399 struct qedi_ctx *qedi = pci_get_drvdata(pdev); 2400 2401 QEDI_ERR(&qedi->dbg_ctx, "%s: PCI error detected [%d]\n", 2402 __func__, state); 2403 2404 if (test_and_set_bit(QEDI_IN_RECOVERY, &qedi->flags)) { 2405 QEDI_INFO(&qedi->dbg_ctx, QEDI_LOG_INFO, 2406 "Recovery already in progress.\n"); 2407 return PCI_ERS_RESULT_NONE; 2408 } 2409 2410 qedi_ops->common->recovery_process(qedi->cdev); 2411 2412 return PCI_ERS_RESULT_CAN_RECOVER; 2413 } 2414 2415 static void __qedi_remove(struct pci_dev *pdev, int mode) 2416 { 2417 struct qedi_ctx *qedi = pci_get_drvdata(pdev); 2418 int rval; 2419 u16 retry = 10; 2420 2421 if (mode == QEDI_MODE_NORMAL || mode == QEDI_MODE_SHUTDOWN) { 2422 iscsi_host_remove(qedi->shost); 2423 2424 if (qedi->tmf_thread) { 2425 flush_workqueue(qedi->tmf_thread); 2426 destroy_workqueue(qedi->tmf_thread); 2427 qedi->tmf_thread = NULL; 2428 } 2429 2430 if (qedi->offload_thread) { 2431 flush_workqueue(qedi->offload_thread); 2432 destroy_workqueue(qedi->offload_thread); 2433 qedi->offload_thread = NULL; 2434 } 2435 } 2436 2437 #ifdef CONFIG_DEBUG_FS 2438 qedi_dbg_host_exit(&qedi->dbg_ctx); 2439 #endif 2440 if (!test_bit(QEDI_IN_OFFLINE, &qedi->flags)) 2441 qedi_ops->common->set_power_state(qedi->cdev, PCI_D0); 2442 2443 qedi_sync_free_irqs(qedi); 2444 2445 if (!test_bit(QEDI_IN_OFFLINE, &qedi->flags)) { 2446 while (retry--) { 2447 rval = qedi_ops->stop(qedi->cdev); 2448 if (rval < 0) 2449 msleep(1000); 2450 else 2451 break; 2452 } 2453 qedi_ops->ll2->stop(qedi->cdev); 2454 } 2455 2456 qedi_free_iscsi_pf_param(qedi); 2457 2458 rval = qedi_ops->common->update_drv_state(qedi->cdev, false); 2459 if (rval) 2460 QEDI_ERR(&qedi->dbg_ctx, "Failed to send drv state to MFW\n"); 2461 2462 if (!test_bit(QEDI_IN_OFFLINE, &qedi->flags)) { 2463 qedi_ops->common->slowpath_stop(qedi->cdev); 2464 qedi_ops->common->remove(qedi->cdev); 2465 } 2466 2467 qedi_destroy_fp(qedi); 2468 2469 if (mode == QEDI_MODE_NORMAL || mode == QEDI_MODE_SHUTDOWN) { 2470 qedi_release_cid_que(qedi); 2471 qedi_cm_free_mem(qedi); 2472 qedi_free_uio(qedi->udev); 2473 qedi_free_itt(qedi); 2474 2475 if (qedi->ll2_recv_thread) { 2476 kthread_stop(qedi->ll2_recv_thread); 2477 qedi->ll2_recv_thread = NULL; 2478 } 2479 qedi_ll2_free_skbs(qedi); 2480 2481 if (qedi->boot_kset) 2482 iscsi_boot_destroy_kset(qedi->boot_kset); 2483 2484 iscsi_host_free(qedi->shost); 2485 } 2486 } 2487 2488 static void qedi_board_disable_work(struct work_struct *work) 2489 { 2490 struct qedi_ctx *qedi = 2491 container_of(work, struct qedi_ctx, 2492 board_disable_work.work); 2493 2494 QEDI_INFO(&qedi->dbg_ctx, QEDI_LOG_INFO, 2495 "Fan failure, Unloading firmware context.\n"); 2496 2497 if (test_and_set_bit(QEDI_IN_SHUTDOWN, &qedi->flags)) 2498 return; 2499 2500 __qedi_remove(qedi->pdev, QEDI_MODE_SHUTDOWN); 2501 } 2502 2503 static void qedi_shutdown(struct pci_dev *pdev) 2504 { 2505 struct qedi_ctx *qedi = pci_get_drvdata(pdev); 2506 2507 QEDI_ERR(&qedi->dbg_ctx, "%s: Shutdown qedi\n", __func__); 2508 if (test_and_set_bit(QEDI_IN_SHUTDOWN, &qedi->flags)) 2509 return; 2510 __qedi_remove(pdev, QEDI_MODE_SHUTDOWN); 2511 } 2512 2513 static int __qedi_probe(struct pci_dev *pdev, int mode) 2514 { 2515 struct qedi_ctx *qedi; 2516 struct qed_ll2_params params; 2517 u8 dp_level = 0; 2518 bool is_vf = false; 2519 char host_buf[16]; 2520 struct qed_link_params link_params; 2521 struct qed_slowpath_params sp_params; 2522 struct qed_probe_params qed_params; 2523 void *task_start, *task_end; 2524 int rc; 2525 u16 retry = 10; 2526 2527 if (mode != QEDI_MODE_RECOVERY) { 2528 qedi = qedi_host_alloc(pdev); 2529 if (!qedi) { 2530 rc = -ENOMEM; 2531 goto exit_probe; 2532 } 2533 } else { 2534 qedi = pci_get_drvdata(pdev); 2535 } 2536 2537 retry_probe: 2538 if (mode == QEDI_MODE_RECOVERY) 2539 msleep(2000); 2540 2541 memset(&qed_params, 0, sizeof(qed_params)); 2542 qed_params.protocol = QED_PROTOCOL_ISCSI; 2543 qed_params.dp_module = qedi_qed_debug; 2544 qed_params.dp_level = dp_level; 2545 qed_params.is_vf = is_vf; 2546 qedi->cdev = qedi_ops->common->probe(pdev, &qed_params); 2547 if (!qedi->cdev) { 2548 if (mode == QEDI_MODE_RECOVERY && retry) { 2549 QEDI_INFO(&qedi->dbg_ctx, QEDI_LOG_INFO, 2550 "Retry %d initialize hardware\n", retry); 2551 retry--; 2552 goto retry_probe; 2553 } 2554 2555 rc = -ENODEV; 2556 QEDI_ERR(&qedi->dbg_ctx, "Cannot initialize hardware\n"); 2557 goto free_host; 2558 } 2559 2560 set_bit(QEDI_ERR_ATTN_CLR_EN, &qedi->qedi_err_flags); 2561 set_bit(QEDI_ERR_IS_RECOVERABLE, &qedi->qedi_err_flags); 2562 atomic_set(&qedi->link_state, QEDI_LINK_DOWN); 2563 2564 rc = qedi_ops->fill_dev_info(qedi->cdev, &qedi->dev_info); 2565 if (rc) 2566 goto free_host; 2567 2568 QEDI_INFO(&qedi->dbg_ctx, QEDI_LOG_INFO, 2569 "dev_info: num_hwfns=%d affin_hwfn_idx=%d.\n", 2570 qedi->dev_info.common.num_hwfns, 2571 qedi_ops->common->get_affin_hwfn_idx(qedi->cdev)); 2572 2573 rc = qedi_set_iscsi_pf_param(qedi); 2574 if (rc) { 2575 rc = -ENOMEM; 2576 QEDI_ERR(&qedi->dbg_ctx, 2577 "Set iSCSI pf param fail\n"); 2578 goto free_host; 2579 } 2580 2581 qedi_ops->common->update_pf_params(qedi->cdev, &qedi->pf_params); 2582 2583 rc = qedi_prepare_fp(qedi); 2584 if (rc) { 2585 QEDI_ERR(&qedi->dbg_ctx, "Cannot start slowpath.\n"); 2586 goto free_pf_params; 2587 } 2588 2589 /* Start the Slowpath-process */ 2590 memset(&sp_params, 0, sizeof(struct qed_slowpath_params)); 2591 sp_params.int_mode = QED_INT_MODE_MSIX; 2592 sp_params.drv_major = QEDI_DRIVER_MAJOR_VER; 2593 sp_params.drv_minor = QEDI_DRIVER_MINOR_VER; 2594 sp_params.drv_rev = QEDI_DRIVER_REV_VER; 2595 sp_params.drv_eng = QEDI_DRIVER_ENG_VER; 2596 strlcpy(sp_params.name, "qedi iSCSI", QED_DRV_VER_STR_SIZE); 2597 rc = qedi_ops->common->slowpath_start(qedi->cdev, &sp_params); 2598 if (rc) { 2599 QEDI_ERR(&qedi->dbg_ctx, "Cannot start slowpath\n"); 2600 goto stop_hw; 2601 } 2602 2603 /* update_pf_params needs to be called before and after slowpath 2604 * start 2605 */ 2606 qedi_ops->common->update_pf_params(qedi->cdev, &qedi->pf_params); 2607 2608 rc = qedi_setup_int(qedi); 2609 if (rc) 2610 goto stop_iscsi_func; 2611 2612 qedi_ops->common->set_power_state(qedi->cdev, PCI_D0); 2613 2614 /* Learn information crucial for qedi to progress */ 2615 rc = qedi_ops->fill_dev_info(qedi->cdev, &qedi->dev_info); 2616 if (rc) 2617 goto stop_iscsi_func; 2618 2619 /* Record BDQ producer doorbell addresses */ 2620 qedi->bdq_primary_prod = qedi->dev_info.primary_dbq_rq_addr; 2621 qedi->bdq_secondary_prod = qedi->dev_info.secondary_bdq_rq_addr; 2622 QEDI_INFO(&qedi->dbg_ctx, QEDI_LOG_DISC, 2623 "BDQ primary_prod=%p secondary_prod=%p.\n", 2624 qedi->bdq_primary_prod, 2625 qedi->bdq_secondary_prod); 2626 2627 /* 2628 * We need to write the number of BDs in the BDQ we've preallocated so 2629 * the f/w will do a prefetch and we'll get an unsolicited CQE when a 2630 * packet arrives. 2631 */ 2632 qedi->bdq_prod_idx = QEDI_BDQ_NUM; 2633 QEDI_INFO(&qedi->dbg_ctx, QEDI_LOG_DISC, 2634 "Writing %d to primary and secondary BDQ doorbell registers.\n", 2635 qedi->bdq_prod_idx); 2636 writew(qedi->bdq_prod_idx, qedi->bdq_primary_prod); 2637 readw(qedi->bdq_primary_prod); 2638 writew(qedi->bdq_prod_idx, qedi->bdq_secondary_prod); 2639 readw(qedi->bdq_secondary_prod); 2640 2641 ether_addr_copy(qedi->mac, qedi->dev_info.common.hw_mac); 2642 QEDI_INFO(&qedi->dbg_ctx, QEDI_LOG_DISC, "MAC address is %pM.\n", 2643 qedi->mac); 2644 2645 snprintf(host_buf, sizeof(host_buf), "host_%d", qedi->shost->host_no); 2646 qedi_ops->common->set_name(qedi->cdev, host_buf); 2647 2648 qedi_ops->register_ops(qedi->cdev, &qedi_cb_ops, qedi); 2649 2650 memset(¶ms, 0, sizeof(params)); 2651 params.mtu = DEF_PATH_MTU + IPV6_HDR_LEN + TCP_HDR_LEN; 2652 qedi->ll2_mtu = DEF_PATH_MTU; 2653 params.drop_ttl0_packets = 0; 2654 params.rx_vlan_stripping = 1; 2655 ether_addr_copy(params.ll2_mac_address, qedi->dev_info.common.hw_mac); 2656 2657 if (mode != QEDI_MODE_RECOVERY) { 2658 /* set up rx path */ 2659 INIT_LIST_HEAD(&qedi->ll2_skb_list); 2660 spin_lock_init(&qedi->ll2_lock); 2661 /* start qedi context */ 2662 spin_lock_init(&qedi->hba_lock); 2663 spin_lock_init(&qedi->task_idx_lock); 2664 mutex_init(&qedi->stats_lock); 2665 } 2666 qedi_ops->ll2->register_cb_ops(qedi->cdev, &qedi_ll2_cb_ops, qedi); 2667 qedi_ops->ll2->start(qedi->cdev, ¶ms); 2668 2669 if (mode != QEDI_MODE_RECOVERY) { 2670 qedi->ll2_recv_thread = kthread_run(qedi_ll2_recv_thread, 2671 (void *)qedi, 2672 "qedi_ll2_thread"); 2673 } 2674 2675 rc = qedi_ops->start(qedi->cdev, &qedi->tasks, 2676 qedi, qedi_iscsi_event_cb); 2677 if (rc) { 2678 rc = -ENODEV; 2679 QEDI_ERR(&qedi->dbg_ctx, "Cannot start iSCSI function\n"); 2680 goto stop_slowpath; 2681 } 2682 2683 task_start = qedi_get_task_mem(&qedi->tasks, 0); 2684 task_end = qedi_get_task_mem(&qedi->tasks, MAX_TID_BLOCKS_ISCSI - 1); 2685 QEDI_INFO(&qedi->dbg_ctx, QEDI_LOG_DISC, 2686 "Task context start=%p, end=%p block_size=%u.\n", 2687 task_start, task_end, qedi->tasks.size); 2688 2689 memset(&link_params, 0, sizeof(link_params)); 2690 link_params.link_up = true; 2691 rc = qedi_ops->common->set_link(qedi->cdev, &link_params); 2692 if (rc) { 2693 QEDI_WARN(&qedi->dbg_ctx, "Link set up failed.\n"); 2694 atomic_set(&qedi->link_state, QEDI_LINK_DOWN); 2695 } 2696 2697 #ifdef CONFIG_DEBUG_FS 2698 qedi_dbg_host_init(&qedi->dbg_ctx, qedi_debugfs_ops, 2699 qedi_dbg_fops); 2700 #endif 2701 QEDI_INFO(&qedi->dbg_ctx, QEDI_LOG_INFO, 2702 "QLogic FastLinQ iSCSI Module qedi %s, FW %d.%d.%d.%d\n", 2703 QEDI_MODULE_VERSION, FW_MAJOR_VERSION, FW_MINOR_VERSION, 2704 FW_REVISION_VERSION, FW_ENGINEERING_VERSION); 2705 2706 if (mode == QEDI_MODE_NORMAL) { 2707 if (iscsi_host_add(qedi->shost, &pdev->dev)) { 2708 QEDI_ERR(&qedi->dbg_ctx, 2709 "Could not add iscsi host\n"); 2710 rc = -ENOMEM; 2711 goto remove_host; 2712 } 2713 2714 /* Allocate uio buffers */ 2715 rc = qedi_alloc_uio_rings(qedi); 2716 if (rc) { 2717 QEDI_ERR(&qedi->dbg_ctx, 2718 "UIO alloc ring failed err=%d\n", rc); 2719 goto remove_host; 2720 } 2721 2722 rc = qedi_init_uio(qedi); 2723 if (rc) { 2724 QEDI_ERR(&qedi->dbg_ctx, 2725 "UIO init failed, err=%d\n", rc); 2726 goto free_uio; 2727 } 2728 2729 /* host the array on iscsi_conn */ 2730 rc = qedi_setup_cid_que(qedi); 2731 if (rc) { 2732 QEDI_ERR(&qedi->dbg_ctx, 2733 "Could not setup cid que\n"); 2734 goto free_uio; 2735 } 2736 2737 rc = qedi_cm_alloc_mem(qedi); 2738 if (rc) { 2739 QEDI_ERR(&qedi->dbg_ctx, 2740 "Could not alloc cm memory\n"); 2741 goto free_cid_que; 2742 } 2743 2744 rc = qedi_alloc_itt(qedi); 2745 if (rc) { 2746 QEDI_ERR(&qedi->dbg_ctx, 2747 "Could not alloc itt memory\n"); 2748 goto free_cid_que; 2749 } 2750 2751 sprintf(host_buf, "host_%d", qedi->shost->host_no); 2752 qedi->tmf_thread = create_singlethread_workqueue(host_buf); 2753 if (!qedi->tmf_thread) { 2754 QEDI_ERR(&qedi->dbg_ctx, 2755 "Unable to start tmf thread!\n"); 2756 rc = -ENODEV; 2757 goto free_cid_que; 2758 } 2759 2760 sprintf(host_buf, "qedi_ofld%d", qedi->shost->host_no); 2761 qedi->offload_thread = create_workqueue(host_buf); 2762 if (!qedi->offload_thread) { 2763 QEDI_ERR(&qedi->dbg_ctx, 2764 "Unable to start offload thread!\n"); 2765 rc = -ENODEV; 2766 goto free_tmf_thread; 2767 } 2768 2769 INIT_DELAYED_WORK(&qedi->recovery_work, qedi_recovery_handler); 2770 INIT_DELAYED_WORK(&qedi->board_disable_work, 2771 qedi_board_disable_work); 2772 2773 /* F/w needs 1st task context memory entry for performance */ 2774 set_bit(QEDI_RESERVE_TASK_ID, qedi->task_idx_map); 2775 atomic_set(&qedi->num_offloads, 0); 2776 2777 if (qedi_setup_boot_info(qedi)) 2778 QEDI_ERR(&qedi->dbg_ctx, 2779 "No iSCSI boot target configured\n"); 2780 2781 rc = qedi_ops->common->update_drv_state(qedi->cdev, true); 2782 if (rc) 2783 QEDI_ERR(&qedi->dbg_ctx, 2784 "Failed to send drv state to MFW\n"); 2785 2786 } 2787 2788 return 0; 2789 2790 free_tmf_thread: 2791 destroy_workqueue(qedi->tmf_thread); 2792 free_cid_que: 2793 qedi_release_cid_que(qedi); 2794 free_uio: 2795 qedi_free_uio(qedi->udev); 2796 remove_host: 2797 #ifdef CONFIG_DEBUG_FS 2798 qedi_dbg_host_exit(&qedi->dbg_ctx); 2799 #endif 2800 iscsi_host_remove(qedi->shost); 2801 stop_iscsi_func: 2802 qedi_ops->stop(qedi->cdev); 2803 stop_slowpath: 2804 qedi_ops->common->slowpath_stop(qedi->cdev); 2805 stop_hw: 2806 qedi_ops->common->remove(qedi->cdev); 2807 free_pf_params: 2808 qedi_free_iscsi_pf_param(qedi); 2809 free_host: 2810 iscsi_host_free(qedi->shost); 2811 exit_probe: 2812 return rc; 2813 } 2814 2815 static void qedi_mark_conn_recovery(struct iscsi_cls_session *cls_session) 2816 { 2817 struct iscsi_session *session = cls_session->dd_data; 2818 struct iscsi_conn *conn = session->leadconn; 2819 struct qedi_conn *qedi_conn = conn->dd_data; 2820 2821 iscsi_conn_failure(qedi_conn->cls_conn->dd_data, ISCSI_ERR_CONN_FAILED); 2822 } 2823 2824 static void qedi_recovery_handler(struct work_struct *work) 2825 { 2826 struct qedi_ctx *qedi = 2827 container_of(work, struct qedi_ctx, recovery_work.work); 2828 2829 iscsi_host_for_each_session(qedi->shost, qedi_mark_conn_recovery); 2830 2831 /* Call common_ops->recovery_prolog to allow the MFW to quiesce 2832 * any PCI transactions. 2833 */ 2834 qedi_ops->common->recovery_prolog(qedi->cdev); 2835 2836 __qedi_remove(qedi->pdev, QEDI_MODE_RECOVERY); 2837 __qedi_probe(qedi->pdev, QEDI_MODE_RECOVERY); 2838 clear_bit(QEDI_IN_RECOVERY, &qedi->flags); 2839 } 2840 2841 static int qedi_probe(struct pci_dev *pdev, const struct pci_device_id *id) 2842 { 2843 return __qedi_probe(pdev, QEDI_MODE_NORMAL); 2844 } 2845 2846 static void qedi_remove(struct pci_dev *pdev) 2847 { 2848 __qedi_remove(pdev, QEDI_MODE_NORMAL); 2849 } 2850 2851 static struct pci_device_id qedi_pci_tbl[] = { 2852 { PCI_DEVICE(PCI_VENDOR_ID_QLOGIC, 0x165E) }, 2853 { PCI_DEVICE(PCI_VENDOR_ID_QLOGIC, 0x8084) }, 2854 { 0 }, 2855 }; 2856 MODULE_DEVICE_TABLE(pci, qedi_pci_tbl); 2857 2858 static enum cpuhp_state qedi_cpuhp_state; 2859 2860 static struct pci_error_handlers qedi_err_handler = { 2861 .error_detected = qedi_io_error_detected, 2862 }; 2863 2864 static struct pci_driver qedi_pci_driver = { 2865 .name = QEDI_MODULE_NAME, 2866 .id_table = qedi_pci_tbl, 2867 .probe = qedi_probe, 2868 .remove = qedi_remove, 2869 .shutdown = qedi_shutdown, 2870 .err_handler = &qedi_err_handler, 2871 }; 2872 2873 static int __init qedi_init(void) 2874 { 2875 struct qedi_percpu_s *p; 2876 int cpu, rc = 0; 2877 2878 qedi_ops = qed_get_iscsi_ops(); 2879 if (!qedi_ops) { 2880 QEDI_ERR(NULL, "Failed to get qed iSCSI operations\n"); 2881 return -EINVAL; 2882 } 2883 2884 #ifdef CONFIG_DEBUG_FS 2885 qedi_dbg_init("qedi"); 2886 #endif 2887 2888 qedi_scsi_transport = iscsi_register_transport(&qedi_iscsi_transport); 2889 if (!qedi_scsi_transport) { 2890 QEDI_ERR(NULL, "Could not register qedi transport"); 2891 rc = -ENOMEM; 2892 goto exit_qedi_init_1; 2893 } 2894 2895 for_each_possible_cpu(cpu) { 2896 p = &per_cpu(qedi_percpu, cpu); 2897 INIT_LIST_HEAD(&p->work_list); 2898 spin_lock_init(&p->p_work_lock); 2899 p->iothread = NULL; 2900 } 2901 2902 rc = cpuhp_setup_state(CPUHP_AP_ONLINE_DYN, "scsi/qedi:online", 2903 qedi_cpu_online, qedi_cpu_offline); 2904 if (rc < 0) 2905 goto exit_qedi_init_2; 2906 qedi_cpuhp_state = rc; 2907 2908 rc = pci_register_driver(&qedi_pci_driver); 2909 if (rc) { 2910 QEDI_ERR(NULL, "Failed to register driver\n"); 2911 goto exit_qedi_hp; 2912 } 2913 2914 return 0; 2915 2916 exit_qedi_hp: 2917 cpuhp_remove_state(qedi_cpuhp_state); 2918 exit_qedi_init_2: 2919 iscsi_unregister_transport(&qedi_iscsi_transport); 2920 exit_qedi_init_1: 2921 #ifdef CONFIG_DEBUG_FS 2922 qedi_dbg_exit(); 2923 #endif 2924 qed_put_iscsi_ops(); 2925 return rc; 2926 } 2927 2928 static void __exit qedi_cleanup(void) 2929 { 2930 pci_unregister_driver(&qedi_pci_driver); 2931 cpuhp_remove_state(qedi_cpuhp_state); 2932 iscsi_unregister_transport(&qedi_iscsi_transport); 2933 2934 #ifdef CONFIG_DEBUG_FS 2935 qedi_dbg_exit(); 2936 #endif 2937 qed_put_iscsi_ops(); 2938 } 2939 2940 MODULE_DESCRIPTION("QLogic FastLinQ 4xxxx iSCSI Module"); 2941 MODULE_LICENSE("GPL"); 2942 MODULE_AUTHOR("QLogic Corporation"); 2943 MODULE_VERSION(QEDI_MODULE_VERSION); 2944 module_init(qedi_init); 2945 module_exit(qedi_cleanup); 2946