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_fw_debug; 32 module_param(qedi_fw_debug, uint, 0644); 33 MODULE_PARM_DESC(qedi_fw_debug, " Firmware debug level 0(default) to 3"); 34 35 uint qedi_dbg_log = QEDI_LOG_WARN | QEDI_LOG_SCSI_TM; 36 module_param(qedi_dbg_log, uint, 0644); 37 MODULE_PARM_DESC(qedi_dbg_log, " Default debug level"); 38 39 uint qedi_io_tracing; 40 module_param(qedi_io_tracing, uint, 0644); 41 MODULE_PARM_DESC(qedi_io_tracing, 42 " Enable logging of SCSI requests/completions into trace buffer. (default off)."); 43 44 uint qedi_ll2_buf_size = 0x400; 45 module_param(qedi_ll2_buf_size, uint, 0644); 46 MODULE_PARM_DESC(qedi_ll2_buf_size, 47 "parameter to set ping packet size, default - 0x400, Jumbo packets - 0x2400."); 48 49 const struct qed_iscsi_ops *qedi_ops; 50 static struct scsi_transport_template *qedi_scsi_transport; 51 static struct pci_driver qedi_pci_driver; 52 static DEFINE_PER_CPU(struct qedi_percpu_s, qedi_percpu); 53 static LIST_HEAD(qedi_udev_list); 54 /* Static function declaration */ 55 static int qedi_alloc_global_queues(struct qedi_ctx *qedi); 56 static void qedi_free_global_queues(struct qedi_ctx *qedi); 57 static struct qedi_cmd *qedi_get_cmd_from_tid(struct qedi_ctx *qedi, u32 tid); 58 static void qedi_reset_uio_rings(struct qedi_uio_dev *udev); 59 static void qedi_ll2_free_skbs(struct qedi_ctx *qedi); 60 static struct nvm_iscsi_block *qedi_get_nvram_block(struct qedi_ctx *qedi); 61 62 static int qedi_iscsi_event_cb(void *context, u8 fw_event_code, void *fw_handle) 63 { 64 struct qedi_ctx *qedi; 65 struct qedi_endpoint *qedi_ep; 66 struct iscsi_eqe_data *data; 67 int rval = 0; 68 69 if (!context || !fw_handle) { 70 QEDI_ERR(NULL, "Recv event with ctx NULL\n"); 71 return -EINVAL; 72 } 73 74 qedi = (struct qedi_ctx *)context; 75 QEDI_INFO(&qedi->dbg_ctx, QEDI_LOG_INFO, 76 "Recv Event %d fw_handle %p\n", fw_event_code, fw_handle); 77 78 data = (struct iscsi_eqe_data *)fw_handle; 79 QEDI_INFO(&qedi->dbg_ctx, QEDI_LOG_INFO, 80 "icid=0x%x conn_id=0x%x err-code=0x%x error-pdu-opcode-reserved=0x%x\n", 81 data->icid, data->conn_id, data->error_code, 82 data->error_pdu_opcode_reserved); 83 84 qedi_ep = qedi->ep_tbl[data->icid]; 85 86 if (!qedi_ep) { 87 QEDI_WARN(&qedi->dbg_ctx, 88 "Cannot process event, ep already disconnected, cid=0x%x\n", 89 data->icid); 90 WARN_ON(1); 91 return -ENODEV; 92 } 93 94 switch (fw_event_code) { 95 case ISCSI_EVENT_TYPE_ASYN_CONNECT_COMPLETE: 96 if (qedi_ep->state == EP_STATE_OFLDCONN_START) 97 qedi_ep->state = EP_STATE_OFLDCONN_COMPL; 98 99 wake_up_interruptible(&qedi_ep->tcp_ofld_wait); 100 break; 101 case ISCSI_EVENT_TYPE_ASYN_TERMINATE_DONE: 102 qedi_ep->state = EP_STATE_DISCONN_COMPL; 103 wake_up_interruptible(&qedi_ep->tcp_ofld_wait); 104 break; 105 case ISCSI_EVENT_TYPE_ISCSI_CONN_ERROR: 106 qedi_process_iscsi_error(qedi_ep, data); 107 break; 108 case ISCSI_EVENT_TYPE_ASYN_ABORT_RCVD: 109 case ISCSI_EVENT_TYPE_ASYN_SYN_RCVD: 110 case ISCSI_EVENT_TYPE_ASYN_MAX_RT_TIME: 111 case ISCSI_EVENT_TYPE_ASYN_MAX_RT_CNT: 112 case ISCSI_EVENT_TYPE_ASYN_MAX_KA_PROBES_CNT: 113 case ISCSI_EVENT_TYPE_ASYN_FIN_WAIT2: 114 case ISCSI_EVENT_TYPE_TCP_CONN_ERROR: 115 qedi_process_tcp_error(qedi_ep, data); 116 break; 117 default: 118 QEDI_ERR(&qedi->dbg_ctx, "Recv Unknown Event %u\n", 119 fw_event_code); 120 } 121 122 return rval; 123 } 124 125 static int qedi_uio_open(struct uio_info *uinfo, struct inode *inode) 126 { 127 struct qedi_uio_dev *udev = uinfo->priv; 128 struct qedi_ctx *qedi = udev->qedi; 129 130 if (!capable(CAP_NET_ADMIN)) 131 return -EPERM; 132 133 if (udev->uio_dev != -1) 134 return -EBUSY; 135 136 rtnl_lock(); 137 udev->uio_dev = iminor(inode); 138 qedi_reset_uio_rings(udev); 139 set_bit(UIO_DEV_OPENED, &qedi->flags); 140 rtnl_unlock(); 141 142 return 0; 143 } 144 145 static int qedi_uio_close(struct uio_info *uinfo, struct inode *inode) 146 { 147 struct qedi_uio_dev *udev = uinfo->priv; 148 struct qedi_ctx *qedi = udev->qedi; 149 150 udev->uio_dev = -1; 151 clear_bit(UIO_DEV_OPENED, &qedi->flags); 152 qedi_ll2_free_skbs(qedi); 153 return 0; 154 } 155 156 static void __qedi_free_uio_rings(struct qedi_uio_dev *udev) 157 { 158 if (udev->uctrl) { 159 free_page((unsigned long)udev->uctrl); 160 udev->uctrl = NULL; 161 } 162 163 if (udev->ll2_ring) { 164 free_page((unsigned long)udev->ll2_ring); 165 udev->ll2_ring = NULL; 166 } 167 168 if (udev->ll2_buf) { 169 free_pages((unsigned long)udev->ll2_buf, 2); 170 udev->ll2_buf = NULL; 171 } 172 } 173 174 static void __qedi_free_uio(struct qedi_uio_dev *udev) 175 { 176 uio_unregister_device(&udev->qedi_uinfo); 177 178 __qedi_free_uio_rings(udev); 179 180 pci_dev_put(udev->pdev); 181 kfree(udev); 182 } 183 184 static void qedi_free_uio(struct qedi_uio_dev *udev) 185 { 186 if (!udev) 187 return; 188 189 list_del_init(&udev->list); 190 __qedi_free_uio(udev); 191 } 192 193 static void qedi_reset_uio_rings(struct qedi_uio_dev *udev) 194 { 195 struct qedi_ctx *qedi = NULL; 196 struct qedi_uio_ctrl *uctrl = NULL; 197 198 qedi = udev->qedi; 199 uctrl = udev->uctrl; 200 201 spin_lock_bh(&qedi->ll2_lock); 202 uctrl->host_rx_cons = 0; 203 uctrl->hw_rx_prod = 0; 204 uctrl->hw_rx_bd_prod = 0; 205 uctrl->host_rx_bd_cons = 0; 206 207 memset(udev->ll2_ring, 0, udev->ll2_ring_size); 208 memset(udev->ll2_buf, 0, udev->ll2_buf_size); 209 spin_unlock_bh(&qedi->ll2_lock); 210 } 211 212 static int __qedi_alloc_uio_rings(struct qedi_uio_dev *udev) 213 { 214 int rc = 0; 215 216 if (udev->ll2_ring || udev->ll2_buf) 217 return rc; 218 219 /* Memory for control area. */ 220 udev->uctrl = (void *)get_zeroed_page(GFP_KERNEL); 221 if (!udev->uctrl) 222 return -ENOMEM; 223 224 /* Allocating memory for LL2 ring */ 225 udev->ll2_ring_size = QEDI_PAGE_SIZE; 226 udev->ll2_ring = (void *)get_zeroed_page(GFP_KERNEL | __GFP_COMP); 227 if (!udev->ll2_ring) { 228 rc = -ENOMEM; 229 goto exit_alloc_ring; 230 } 231 232 /* Allocating memory for Tx/Rx pkt buffer */ 233 udev->ll2_buf_size = TX_RX_RING * qedi_ll2_buf_size; 234 udev->ll2_buf_size = QEDI_PAGE_ALIGN(udev->ll2_buf_size); 235 udev->ll2_buf = (void *)__get_free_pages(GFP_KERNEL | __GFP_COMP | 236 __GFP_ZERO, 2); 237 if (!udev->ll2_buf) { 238 rc = -ENOMEM; 239 goto exit_alloc_buf; 240 } 241 return rc; 242 243 exit_alloc_buf: 244 free_page((unsigned long)udev->ll2_ring); 245 udev->ll2_ring = NULL; 246 exit_alloc_ring: 247 return rc; 248 } 249 250 static int qedi_alloc_uio_rings(struct qedi_ctx *qedi) 251 { 252 struct qedi_uio_dev *udev = NULL; 253 int rc = 0; 254 255 list_for_each_entry(udev, &qedi_udev_list, list) { 256 if (udev->pdev == qedi->pdev) { 257 udev->qedi = qedi; 258 if (__qedi_alloc_uio_rings(udev)) { 259 udev->qedi = NULL; 260 return -ENOMEM; 261 } 262 qedi->udev = udev; 263 return 0; 264 } 265 } 266 267 udev = kzalloc(sizeof(*udev), GFP_KERNEL); 268 if (!udev) { 269 rc = -ENOMEM; 270 goto err_udev; 271 } 272 273 udev->uio_dev = -1; 274 275 udev->qedi = qedi; 276 udev->pdev = qedi->pdev; 277 278 rc = __qedi_alloc_uio_rings(udev); 279 if (rc) 280 goto err_uctrl; 281 282 list_add(&udev->list, &qedi_udev_list); 283 284 pci_dev_get(udev->pdev); 285 qedi->udev = udev; 286 287 udev->tx_pkt = udev->ll2_buf; 288 udev->rx_pkt = udev->ll2_buf + qedi_ll2_buf_size; 289 return 0; 290 291 err_uctrl: 292 kfree(udev); 293 err_udev: 294 return -ENOMEM; 295 } 296 297 static int qedi_init_uio(struct qedi_ctx *qedi) 298 { 299 struct qedi_uio_dev *udev = qedi->udev; 300 struct uio_info *uinfo; 301 int ret = 0; 302 303 if (!udev) 304 return -ENOMEM; 305 306 uinfo = &udev->qedi_uinfo; 307 308 uinfo->mem[0].addr = (unsigned long)udev->uctrl; 309 uinfo->mem[0].size = sizeof(struct qedi_uio_ctrl); 310 uinfo->mem[0].memtype = UIO_MEM_LOGICAL; 311 312 uinfo->mem[1].addr = (unsigned long)udev->ll2_ring; 313 uinfo->mem[1].size = udev->ll2_ring_size; 314 uinfo->mem[1].memtype = UIO_MEM_LOGICAL; 315 316 uinfo->mem[2].addr = (unsigned long)udev->ll2_buf; 317 uinfo->mem[2].size = udev->ll2_buf_size; 318 uinfo->mem[2].memtype = UIO_MEM_LOGICAL; 319 320 uinfo->name = "qedi_uio"; 321 uinfo->version = QEDI_MODULE_VERSION; 322 uinfo->irq = UIO_IRQ_CUSTOM; 323 324 uinfo->open = qedi_uio_open; 325 uinfo->release = qedi_uio_close; 326 327 if (udev->uio_dev == -1) { 328 if (!uinfo->priv) { 329 uinfo->priv = udev; 330 331 ret = uio_register_device(&udev->pdev->dev, uinfo); 332 if (ret) { 333 QEDI_ERR(&qedi->dbg_ctx, 334 "UIO registration failed\n"); 335 } 336 } 337 } 338 339 return ret; 340 } 341 342 static int qedi_alloc_and_init_sb(struct qedi_ctx *qedi, 343 struct qed_sb_info *sb_info, u16 sb_id) 344 { 345 struct status_block_e4 *sb_virt; 346 dma_addr_t sb_phys; 347 int ret; 348 349 sb_virt = dma_alloc_coherent(&qedi->pdev->dev, 350 sizeof(struct status_block_e4), &sb_phys, 351 GFP_KERNEL); 352 if (!sb_virt) { 353 QEDI_ERR(&qedi->dbg_ctx, 354 "Status block allocation failed for id = %d.\n", 355 sb_id); 356 return -ENOMEM; 357 } 358 359 ret = qedi_ops->common->sb_init(qedi->cdev, sb_info, sb_virt, sb_phys, 360 sb_id, QED_SB_TYPE_STORAGE); 361 if (ret) { 362 QEDI_ERR(&qedi->dbg_ctx, 363 "Status block initialization failed for id = %d.\n", 364 sb_id); 365 return ret; 366 } 367 368 return 0; 369 } 370 371 static void qedi_free_sb(struct qedi_ctx *qedi) 372 { 373 struct qed_sb_info *sb_info; 374 int id; 375 376 for (id = 0; id < MIN_NUM_CPUS_MSIX(qedi); id++) { 377 sb_info = &qedi->sb_array[id]; 378 if (sb_info->sb_virt) 379 dma_free_coherent(&qedi->pdev->dev, 380 sizeof(*sb_info->sb_virt), 381 (void *)sb_info->sb_virt, 382 sb_info->sb_phys); 383 } 384 } 385 386 static void qedi_free_fp(struct qedi_ctx *qedi) 387 { 388 kfree(qedi->fp_array); 389 kfree(qedi->sb_array); 390 } 391 392 static void qedi_destroy_fp(struct qedi_ctx *qedi) 393 { 394 qedi_free_sb(qedi); 395 qedi_free_fp(qedi); 396 } 397 398 static int qedi_alloc_fp(struct qedi_ctx *qedi) 399 { 400 int ret = 0; 401 402 qedi->fp_array = kcalloc(MIN_NUM_CPUS_MSIX(qedi), 403 sizeof(struct qedi_fastpath), GFP_KERNEL); 404 if (!qedi->fp_array) { 405 QEDI_ERR(&qedi->dbg_ctx, 406 "fastpath fp array allocation failed.\n"); 407 return -ENOMEM; 408 } 409 410 qedi->sb_array = kcalloc(MIN_NUM_CPUS_MSIX(qedi), 411 sizeof(struct qed_sb_info), GFP_KERNEL); 412 if (!qedi->sb_array) { 413 QEDI_ERR(&qedi->dbg_ctx, 414 "fastpath sb array allocation failed.\n"); 415 ret = -ENOMEM; 416 goto free_fp; 417 } 418 419 return ret; 420 421 free_fp: 422 qedi_free_fp(qedi); 423 return ret; 424 } 425 426 static void qedi_int_fp(struct qedi_ctx *qedi) 427 { 428 struct qedi_fastpath *fp; 429 int id; 430 431 memset(qedi->fp_array, 0, MIN_NUM_CPUS_MSIX(qedi) * 432 sizeof(*qedi->fp_array)); 433 memset(qedi->sb_array, 0, MIN_NUM_CPUS_MSIX(qedi) * 434 sizeof(*qedi->sb_array)); 435 436 for (id = 0; id < MIN_NUM_CPUS_MSIX(qedi); id++) { 437 fp = &qedi->fp_array[id]; 438 fp->sb_info = &qedi->sb_array[id]; 439 fp->sb_id = id; 440 fp->qedi = qedi; 441 snprintf(fp->name, sizeof(fp->name), "%s-fp-%d", 442 "qedi", id); 443 444 /* fp_array[i] ---- irq cookie 445 * So init data which is needed in int ctx 446 */ 447 } 448 } 449 450 static int qedi_prepare_fp(struct qedi_ctx *qedi) 451 { 452 struct qedi_fastpath *fp; 453 int id, ret = 0; 454 455 ret = qedi_alloc_fp(qedi); 456 if (ret) 457 goto err; 458 459 qedi_int_fp(qedi); 460 461 for (id = 0; id < MIN_NUM_CPUS_MSIX(qedi); id++) { 462 fp = &qedi->fp_array[id]; 463 ret = qedi_alloc_and_init_sb(qedi, fp->sb_info, fp->sb_id); 464 if (ret) { 465 QEDI_ERR(&qedi->dbg_ctx, 466 "SB allocation and initialization failed.\n"); 467 ret = -EIO; 468 goto err_init; 469 } 470 } 471 472 return 0; 473 474 err_init: 475 qedi_free_sb(qedi); 476 qedi_free_fp(qedi); 477 err: 478 return ret; 479 } 480 481 static int qedi_setup_cid_que(struct qedi_ctx *qedi) 482 { 483 int i; 484 485 qedi->cid_que.cid_que_base = kmalloc_array(qedi->max_active_conns, 486 sizeof(u32), GFP_KERNEL); 487 if (!qedi->cid_que.cid_que_base) 488 return -ENOMEM; 489 490 qedi->cid_que.conn_cid_tbl = kmalloc_array(qedi->max_active_conns, 491 sizeof(struct qedi_conn *), 492 GFP_KERNEL); 493 if (!qedi->cid_que.conn_cid_tbl) { 494 kfree(qedi->cid_que.cid_que_base); 495 qedi->cid_que.cid_que_base = NULL; 496 return -ENOMEM; 497 } 498 499 qedi->cid_que.cid_que = (u32 *)qedi->cid_que.cid_que_base; 500 qedi->cid_que.cid_q_prod_idx = 0; 501 qedi->cid_que.cid_q_cons_idx = 0; 502 qedi->cid_que.cid_q_max_idx = qedi->max_active_conns; 503 qedi->cid_que.cid_free_cnt = qedi->max_active_conns; 504 505 for (i = 0; i < qedi->max_active_conns; i++) { 506 qedi->cid_que.cid_que[i] = i; 507 qedi->cid_que.conn_cid_tbl[i] = NULL; 508 } 509 510 return 0; 511 } 512 513 static void qedi_release_cid_que(struct qedi_ctx *qedi) 514 { 515 kfree(qedi->cid_que.cid_que_base); 516 qedi->cid_que.cid_que_base = NULL; 517 518 kfree(qedi->cid_que.conn_cid_tbl); 519 qedi->cid_que.conn_cid_tbl = NULL; 520 } 521 522 static int qedi_init_id_tbl(struct qedi_portid_tbl *id_tbl, u16 size, 523 u16 start_id, u16 next) 524 { 525 id_tbl->start = start_id; 526 id_tbl->max = size; 527 id_tbl->next = next; 528 spin_lock_init(&id_tbl->lock); 529 id_tbl->table = kcalloc(BITS_TO_LONGS(size), sizeof(long), GFP_KERNEL); 530 if (!id_tbl->table) 531 return -ENOMEM; 532 533 return 0; 534 } 535 536 static void qedi_free_id_tbl(struct qedi_portid_tbl *id_tbl) 537 { 538 kfree(id_tbl->table); 539 id_tbl->table = NULL; 540 } 541 542 int qedi_alloc_id(struct qedi_portid_tbl *id_tbl, u16 id) 543 { 544 int ret = -1; 545 546 id -= id_tbl->start; 547 if (id >= id_tbl->max) 548 return ret; 549 550 spin_lock(&id_tbl->lock); 551 if (!test_bit(id, id_tbl->table)) { 552 set_bit(id, id_tbl->table); 553 ret = 0; 554 } 555 spin_unlock(&id_tbl->lock); 556 return ret; 557 } 558 559 u16 qedi_alloc_new_id(struct qedi_portid_tbl *id_tbl) 560 { 561 u16 id; 562 563 spin_lock(&id_tbl->lock); 564 id = find_next_zero_bit(id_tbl->table, id_tbl->max, id_tbl->next); 565 if (id >= id_tbl->max) { 566 id = QEDI_LOCAL_PORT_INVALID; 567 if (id_tbl->next != 0) { 568 id = find_first_zero_bit(id_tbl->table, id_tbl->next); 569 if (id >= id_tbl->next) 570 id = QEDI_LOCAL_PORT_INVALID; 571 } 572 } 573 574 if (id < id_tbl->max) { 575 set_bit(id, id_tbl->table); 576 id_tbl->next = (id + 1) & (id_tbl->max - 1); 577 id += id_tbl->start; 578 } 579 580 spin_unlock(&id_tbl->lock); 581 582 return id; 583 } 584 585 void qedi_free_id(struct qedi_portid_tbl *id_tbl, u16 id) 586 { 587 if (id == QEDI_LOCAL_PORT_INVALID) 588 return; 589 590 id -= id_tbl->start; 591 if (id >= id_tbl->max) 592 return; 593 594 clear_bit(id, id_tbl->table); 595 } 596 597 static void qedi_cm_free_mem(struct qedi_ctx *qedi) 598 { 599 kfree(qedi->ep_tbl); 600 qedi->ep_tbl = NULL; 601 qedi_free_id_tbl(&qedi->lcl_port_tbl); 602 } 603 604 static int qedi_cm_alloc_mem(struct qedi_ctx *qedi) 605 { 606 u16 port_id; 607 608 qedi->ep_tbl = kzalloc((qedi->max_active_conns * 609 sizeof(struct qedi_endpoint *)), GFP_KERNEL); 610 if (!qedi->ep_tbl) 611 return -ENOMEM; 612 port_id = prandom_u32() % QEDI_LOCAL_PORT_RANGE; 613 if (qedi_init_id_tbl(&qedi->lcl_port_tbl, QEDI_LOCAL_PORT_RANGE, 614 QEDI_LOCAL_PORT_MIN, port_id)) { 615 qedi_cm_free_mem(qedi); 616 return -ENOMEM; 617 } 618 619 return 0; 620 } 621 622 static struct qedi_ctx *qedi_host_alloc(struct pci_dev *pdev) 623 { 624 struct Scsi_Host *shost; 625 struct qedi_ctx *qedi = NULL; 626 627 shost = iscsi_host_alloc(&qedi_host_template, 628 sizeof(struct qedi_ctx), 0); 629 if (!shost) { 630 QEDI_ERR(NULL, "Could not allocate shost\n"); 631 goto exit_setup_shost; 632 } 633 634 shost->max_id = QEDI_MAX_ISCSI_CONNS_PER_HBA; 635 shost->max_channel = 0; 636 shost->max_lun = ~0; 637 shost->max_cmd_len = 16; 638 shost->transportt = qedi_scsi_transport; 639 640 qedi = iscsi_host_priv(shost); 641 memset(qedi, 0, sizeof(*qedi)); 642 qedi->shost = shost; 643 qedi->dbg_ctx.host_no = shost->host_no; 644 qedi->pdev = pdev; 645 qedi->dbg_ctx.pdev = pdev; 646 qedi->max_active_conns = ISCSI_MAX_SESS_PER_HBA; 647 qedi->max_sqes = QEDI_SQ_SIZE; 648 649 shost->nr_hw_queues = MIN_NUM_CPUS_MSIX(qedi); 650 651 pci_set_drvdata(pdev, qedi); 652 653 exit_setup_shost: 654 return qedi; 655 } 656 657 static int qedi_ll2_rx(void *cookie, struct sk_buff *skb, u32 arg1, u32 arg2) 658 { 659 struct qedi_ctx *qedi = (struct qedi_ctx *)cookie; 660 struct qedi_uio_dev *udev; 661 struct qedi_uio_ctrl *uctrl; 662 struct skb_work_list *work; 663 struct ethhdr *eh; 664 665 if (!qedi) { 666 QEDI_ERR(NULL, "qedi is NULL\n"); 667 return -1; 668 } 669 670 if (!test_bit(UIO_DEV_OPENED, &qedi->flags)) { 671 QEDI_INFO(&qedi->dbg_ctx, QEDI_LOG_UIO, 672 "UIO DEV is not opened\n"); 673 kfree_skb(skb); 674 return 0; 675 } 676 677 eh = (struct ethhdr *)skb->data; 678 /* Undo VLAN encapsulation */ 679 if (eh->h_proto == htons(ETH_P_8021Q)) { 680 memmove((u8 *)eh + VLAN_HLEN, eh, ETH_ALEN * 2); 681 eh = (struct ethhdr *)skb_pull(skb, VLAN_HLEN); 682 skb_reset_mac_header(skb); 683 } 684 685 /* Filter out non FIP/FCoE frames here to free them faster */ 686 if (eh->h_proto != htons(ETH_P_ARP) && 687 eh->h_proto != htons(ETH_P_IP) && 688 eh->h_proto != htons(ETH_P_IPV6)) { 689 QEDI_INFO(&qedi->dbg_ctx, QEDI_LOG_LL2, 690 "Dropping frame ethertype [0x%x] len [0x%x].\n", 691 eh->h_proto, skb->len); 692 kfree_skb(skb); 693 return 0; 694 } 695 696 QEDI_INFO(&qedi->dbg_ctx, QEDI_LOG_LL2, 697 "Allowed frame ethertype [0x%x] len [0x%x].\n", 698 eh->h_proto, skb->len); 699 700 udev = qedi->udev; 701 uctrl = udev->uctrl; 702 703 work = kzalloc(sizeof(*work), GFP_ATOMIC); 704 if (!work) { 705 QEDI_WARN(&qedi->dbg_ctx, 706 "Could not allocate work so dropping frame.\n"); 707 kfree_skb(skb); 708 return 0; 709 } 710 711 INIT_LIST_HEAD(&work->list); 712 work->skb = skb; 713 714 if (skb_vlan_tag_present(skb)) 715 work->vlan_id = skb_vlan_tag_get(skb); 716 717 if (work->vlan_id) 718 __vlan_insert_tag(work->skb, htons(ETH_P_8021Q), work->vlan_id); 719 720 spin_lock_bh(&qedi->ll2_lock); 721 list_add_tail(&work->list, &qedi->ll2_skb_list); 722 spin_unlock_bh(&qedi->ll2_lock); 723 724 wake_up_process(qedi->ll2_recv_thread); 725 726 return 0; 727 } 728 729 /* map this skb to iscsiuio mmaped region */ 730 static int qedi_ll2_process_skb(struct qedi_ctx *qedi, struct sk_buff *skb, 731 u16 vlan_id) 732 { 733 struct qedi_uio_dev *udev = NULL; 734 struct qedi_uio_ctrl *uctrl = NULL; 735 struct qedi_rx_bd rxbd; 736 struct qedi_rx_bd *p_rxbd; 737 u32 rx_bd_prod; 738 void *pkt; 739 int len = 0; 740 u32 prod; 741 742 if (!qedi) { 743 QEDI_ERR(NULL, "qedi is NULL\n"); 744 return -1; 745 } 746 747 udev = qedi->udev; 748 uctrl = udev->uctrl; 749 750 ++uctrl->hw_rx_prod_cnt; 751 prod = (uctrl->hw_rx_prod + 1) % RX_RING; 752 753 pkt = udev->rx_pkt + (prod * qedi_ll2_buf_size); 754 len = min_t(u32, skb->len, (u32)qedi_ll2_buf_size); 755 memcpy(pkt, skb->data, len); 756 757 memset(&rxbd, 0, sizeof(rxbd)); 758 rxbd.rx_pkt_index = prod; 759 rxbd.rx_pkt_len = len; 760 rxbd.vlan_id = vlan_id; 761 762 uctrl->hw_rx_bd_prod = (uctrl->hw_rx_bd_prod + 1) % QEDI_NUM_RX_BD; 763 rx_bd_prod = uctrl->hw_rx_bd_prod; 764 p_rxbd = (struct qedi_rx_bd *)udev->ll2_ring; 765 p_rxbd += rx_bd_prod; 766 767 memcpy(p_rxbd, &rxbd, sizeof(rxbd)); 768 769 QEDI_INFO(&qedi->dbg_ctx, QEDI_LOG_LL2, 770 "hw_rx_prod [%d] prod [%d] hw_rx_bd_prod [%d] rx_pkt_idx [%d] rx_len [%d].\n", 771 uctrl->hw_rx_prod, prod, uctrl->hw_rx_bd_prod, 772 rxbd.rx_pkt_index, rxbd.rx_pkt_len); 773 QEDI_INFO(&qedi->dbg_ctx, QEDI_LOG_LL2, 774 "host_rx_cons [%d] hw_rx_bd_cons [%d].\n", 775 uctrl->host_rx_cons, uctrl->host_rx_bd_cons); 776 777 uctrl->hw_rx_prod = prod; 778 779 /* notify the iscsiuio about new packet */ 780 uio_event_notify(&udev->qedi_uinfo); 781 782 return 0; 783 } 784 785 static void qedi_ll2_free_skbs(struct qedi_ctx *qedi) 786 { 787 struct skb_work_list *work, *work_tmp; 788 789 spin_lock_bh(&qedi->ll2_lock); 790 list_for_each_entry_safe(work, work_tmp, &qedi->ll2_skb_list, list) { 791 list_del(&work->list); 792 if (work->skb) 793 kfree_skb(work->skb); 794 kfree(work); 795 } 796 spin_unlock_bh(&qedi->ll2_lock); 797 } 798 799 static int qedi_ll2_recv_thread(void *arg) 800 { 801 struct qedi_ctx *qedi = (struct qedi_ctx *)arg; 802 struct skb_work_list *work, *work_tmp; 803 804 set_user_nice(current, -20); 805 806 while (!kthread_should_stop()) { 807 spin_lock_bh(&qedi->ll2_lock); 808 list_for_each_entry_safe(work, work_tmp, &qedi->ll2_skb_list, 809 list) { 810 list_del(&work->list); 811 qedi_ll2_process_skb(qedi, work->skb, work->vlan_id); 812 kfree_skb(work->skb); 813 kfree(work); 814 } 815 set_current_state(TASK_INTERRUPTIBLE); 816 spin_unlock_bh(&qedi->ll2_lock); 817 schedule(); 818 } 819 820 __set_current_state(TASK_RUNNING); 821 return 0; 822 } 823 824 static int qedi_set_iscsi_pf_param(struct qedi_ctx *qedi) 825 { 826 u8 num_sq_pages; 827 u32 log_page_size; 828 int rval = 0; 829 830 831 num_sq_pages = (MAX_OUTSTANDING_TASKS_PER_CON * 8) / QEDI_PAGE_SIZE; 832 833 qedi->num_queues = MIN_NUM_CPUS_MSIX(qedi); 834 835 QEDI_INFO(&qedi->dbg_ctx, QEDI_LOG_INFO, 836 "Number of CQ count is %d\n", qedi->num_queues); 837 838 memset(&qedi->pf_params.iscsi_pf_params, 0, 839 sizeof(qedi->pf_params.iscsi_pf_params)); 840 841 qedi->p_cpuq = dma_alloc_coherent(&qedi->pdev->dev, 842 qedi->num_queues * sizeof(struct qedi_glbl_q_params), 843 &qedi->hw_p_cpuq, GFP_KERNEL); 844 if (!qedi->p_cpuq) { 845 QEDI_ERR(&qedi->dbg_ctx, "dma_alloc_coherent fail\n"); 846 rval = -1; 847 goto err_alloc_mem; 848 } 849 850 rval = qedi_alloc_global_queues(qedi); 851 if (rval) { 852 QEDI_ERR(&qedi->dbg_ctx, "Global queue allocation failed.\n"); 853 rval = -1; 854 goto err_alloc_mem; 855 } 856 857 qedi->pf_params.iscsi_pf_params.num_cons = QEDI_MAX_ISCSI_CONNS_PER_HBA; 858 qedi->pf_params.iscsi_pf_params.num_tasks = QEDI_MAX_ISCSI_TASK; 859 qedi->pf_params.iscsi_pf_params.half_way_close_timeout = 10; 860 qedi->pf_params.iscsi_pf_params.num_sq_pages_in_ring = num_sq_pages; 861 qedi->pf_params.iscsi_pf_params.num_r2tq_pages_in_ring = num_sq_pages; 862 qedi->pf_params.iscsi_pf_params.num_uhq_pages_in_ring = num_sq_pages; 863 qedi->pf_params.iscsi_pf_params.num_queues = qedi->num_queues; 864 qedi->pf_params.iscsi_pf_params.debug_mode = qedi_fw_debug; 865 qedi->pf_params.iscsi_pf_params.two_msl_timer = 4000; 866 qedi->pf_params.iscsi_pf_params.max_fin_rt = 2; 867 868 for (log_page_size = 0 ; log_page_size < 32 ; log_page_size++) { 869 if ((1 << log_page_size) == QEDI_PAGE_SIZE) 870 break; 871 } 872 qedi->pf_params.iscsi_pf_params.log_page_size = log_page_size; 873 874 qedi->pf_params.iscsi_pf_params.glbl_q_params_addr = 875 (u64)qedi->hw_p_cpuq; 876 877 /* RQ BDQ initializations. 878 * rq_num_entries: suggested value for Initiator is 16 (4KB RQ) 879 * rqe_log_size: 8 for 256B RQE 880 */ 881 qedi->pf_params.iscsi_pf_params.rqe_log_size = 8; 882 /* BDQ address and size */ 883 qedi->pf_params.iscsi_pf_params.bdq_pbl_base_addr[BDQ_ID_RQ] = 884 qedi->bdq_pbl_list_dma; 885 qedi->pf_params.iscsi_pf_params.bdq_pbl_num_entries[BDQ_ID_RQ] = 886 qedi->bdq_pbl_list_num_entries; 887 qedi->pf_params.iscsi_pf_params.rq_buffer_size = QEDI_BDQ_BUF_SIZE; 888 889 /* cq_num_entries: num_tasks + rq_num_entries */ 890 qedi->pf_params.iscsi_pf_params.cq_num_entries = 2048; 891 892 qedi->pf_params.iscsi_pf_params.gl_rq_pi = QEDI_PROTO_CQ_PROD_IDX; 893 qedi->pf_params.iscsi_pf_params.gl_cmd_pi = 1; 894 895 err_alloc_mem: 896 return rval; 897 } 898 899 /* Free DMA coherent memory for array of queue pointers we pass to qed */ 900 static void qedi_free_iscsi_pf_param(struct qedi_ctx *qedi) 901 { 902 size_t size = 0; 903 904 if (qedi->p_cpuq) { 905 size = qedi->num_queues * sizeof(struct qedi_glbl_q_params); 906 dma_free_coherent(&qedi->pdev->dev, size, qedi->p_cpuq, 907 qedi->hw_p_cpuq); 908 } 909 910 qedi_free_global_queues(qedi); 911 912 kfree(qedi->global_queues); 913 } 914 915 static void qedi_get_boot_tgt_info(struct nvm_iscsi_block *block, 916 struct qedi_boot_target *tgt, u8 index) 917 { 918 u32 ipv6_en; 919 920 ipv6_en = !!(block->generic.ctrl_flags & 921 NVM_ISCSI_CFG_GEN_IPV6_ENABLED); 922 923 snprintf(tgt->iscsi_name, sizeof(tgt->iscsi_name), "%s\n", 924 block->target[index].target_name.byte); 925 926 tgt->ipv6_en = ipv6_en; 927 928 if (ipv6_en) 929 snprintf(tgt->ip_addr, IPV6_LEN, "%pI6\n", 930 block->target[index].ipv6_addr.byte); 931 else 932 snprintf(tgt->ip_addr, IPV4_LEN, "%pI4\n", 933 block->target[index].ipv4_addr.byte); 934 } 935 936 static int qedi_find_boot_info(struct qedi_ctx *qedi, 937 struct qed_mfw_tlv_iscsi *iscsi, 938 struct nvm_iscsi_block *block) 939 { 940 struct qedi_boot_target *pri_tgt = NULL, *sec_tgt = NULL; 941 u32 pri_ctrl_flags = 0, sec_ctrl_flags = 0, found = 0; 942 struct iscsi_cls_session *cls_sess; 943 struct iscsi_cls_conn *cls_conn; 944 struct qedi_conn *qedi_conn; 945 struct iscsi_session *sess; 946 struct iscsi_conn *conn; 947 char ep_ip_addr[64]; 948 int i, ret = 0; 949 950 pri_ctrl_flags = !!(block->target[0].ctrl_flags & 951 NVM_ISCSI_CFG_TARGET_ENABLED); 952 if (pri_ctrl_flags) { 953 pri_tgt = kzalloc(sizeof(*pri_tgt), GFP_KERNEL); 954 if (!pri_tgt) 955 return -1; 956 qedi_get_boot_tgt_info(block, pri_tgt, 0); 957 } 958 959 sec_ctrl_flags = !!(block->target[1].ctrl_flags & 960 NVM_ISCSI_CFG_TARGET_ENABLED); 961 if (sec_ctrl_flags) { 962 sec_tgt = kzalloc(sizeof(*sec_tgt), GFP_KERNEL); 963 if (!sec_tgt) { 964 ret = -1; 965 goto free_tgt; 966 } 967 qedi_get_boot_tgt_info(block, sec_tgt, 1); 968 } 969 970 for (i = 0; i < qedi->max_active_conns; i++) { 971 qedi_conn = qedi_get_conn_from_id(qedi, i); 972 if (!qedi_conn) 973 continue; 974 975 if (qedi_conn->ep->ip_type == TCP_IPV4) 976 snprintf(ep_ip_addr, IPV4_LEN, "%pI4\n", 977 qedi_conn->ep->dst_addr); 978 else 979 snprintf(ep_ip_addr, IPV6_LEN, "%pI6\n", 980 qedi_conn->ep->dst_addr); 981 982 cls_conn = qedi_conn->cls_conn; 983 conn = cls_conn->dd_data; 984 cls_sess = iscsi_conn_to_session(cls_conn); 985 sess = cls_sess->dd_data; 986 987 if (!iscsi_is_session_online(cls_sess)) 988 continue; 989 990 if (pri_ctrl_flags) { 991 if (!strcmp(pri_tgt->iscsi_name, sess->targetname) && 992 !strcmp(pri_tgt->ip_addr, ep_ip_addr)) { 993 found = 1; 994 break; 995 } 996 } 997 998 if (sec_ctrl_flags) { 999 if (!strcmp(sec_tgt->iscsi_name, sess->targetname) && 1000 !strcmp(sec_tgt->ip_addr, ep_ip_addr)) { 1001 found = 1; 1002 break; 1003 } 1004 } 1005 } 1006 1007 if (found) { 1008 if (conn->hdrdgst_en) { 1009 iscsi->header_digest_set = true; 1010 iscsi->header_digest = 1; 1011 } 1012 1013 if (conn->datadgst_en) { 1014 iscsi->data_digest_set = true; 1015 iscsi->data_digest = 1; 1016 } 1017 iscsi->boot_taget_portal_set = true; 1018 iscsi->boot_taget_portal = sess->tpgt; 1019 1020 } else { 1021 ret = -1; 1022 } 1023 1024 if (sec_ctrl_flags) 1025 kfree(sec_tgt); 1026 free_tgt: 1027 if (pri_ctrl_flags) 1028 kfree(pri_tgt); 1029 1030 return ret; 1031 } 1032 1033 static void qedi_get_generic_tlv_data(void *dev, struct qed_generic_tlvs *data) 1034 { 1035 struct qedi_ctx *qedi; 1036 1037 if (!dev) { 1038 QEDI_INFO(NULL, QEDI_LOG_EVT, 1039 "dev is NULL so ignoring get_generic_tlv_data request.\n"); 1040 return; 1041 } 1042 qedi = (struct qedi_ctx *)dev; 1043 1044 memset(data, 0, sizeof(struct qed_generic_tlvs)); 1045 ether_addr_copy(data->mac[0], qedi->mac); 1046 } 1047 1048 /* 1049 * Protocol TLV handler 1050 */ 1051 static void qedi_get_protocol_tlv_data(void *dev, void *data) 1052 { 1053 struct qed_mfw_tlv_iscsi *iscsi = data; 1054 struct qed_iscsi_stats *fw_iscsi_stats; 1055 struct nvm_iscsi_block *block = NULL; 1056 u32 chap_en = 0, mchap_en = 0; 1057 struct qedi_ctx *qedi = dev; 1058 int rval = 0; 1059 1060 fw_iscsi_stats = kmalloc(sizeof(*fw_iscsi_stats), GFP_KERNEL); 1061 if (!fw_iscsi_stats) { 1062 QEDI_ERR(&qedi->dbg_ctx, 1063 "Could not allocate memory for fw_iscsi_stats.\n"); 1064 goto exit_get_data; 1065 } 1066 1067 mutex_lock(&qedi->stats_lock); 1068 /* Query firmware for offload stats */ 1069 qedi_ops->get_stats(qedi->cdev, fw_iscsi_stats); 1070 mutex_unlock(&qedi->stats_lock); 1071 1072 iscsi->rx_frames_set = true; 1073 iscsi->rx_frames = fw_iscsi_stats->iscsi_rx_packet_cnt; 1074 iscsi->rx_bytes_set = true; 1075 iscsi->rx_bytes = fw_iscsi_stats->iscsi_rx_bytes_cnt; 1076 iscsi->tx_frames_set = true; 1077 iscsi->tx_frames = fw_iscsi_stats->iscsi_tx_packet_cnt; 1078 iscsi->tx_bytes_set = true; 1079 iscsi->tx_bytes = fw_iscsi_stats->iscsi_tx_bytes_cnt; 1080 iscsi->frame_size_set = true; 1081 iscsi->frame_size = qedi->ll2_mtu; 1082 block = qedi_get_nvram_block(qedi); 1083 if (block) { 1084 chap_en = !!(block->generic.ctrl_flags & 1085 NVM_ISCSI_CFG_GEN_CHAP_ENABLED); 1086 mchap_en = !!(block->generic.ctrl_flags & 1087 NVM_ISCSI_CFG_GEN_CHAP_MUTUAL_ENABLED); 1088 1089 iscsi->auth_method_set = (chap_en || mchap_en) ? true : false; 1090 iscsi->auth_method = 1; 1091 if (chap_en) 1092 iscsi->auth_method = 2; 1093 if (mchap_en) 1094 iscsi->auth_method = 3; 1095 1096 iscsi->tx_desc_size_set = true; 1097 iscsi->tx_desc_size = QEDI_SQ_SIZE; 1098 iscsi->rx_desc_size_set = true; 1099 iscsi->rx_desc_size = QEDI_CQ_SIZE; 1100 1101 /* tpgt, hdr digest, data digest */ 1102 rval = qedi_find_boot_info(qedi, iscsi, block); 1103 if (rval) 1104 QEDI_INFO(&qedi->dbg_ctx, QEDI_LOG_INFO, 1105 "Boot target not set"); 1106 } 1107 1108 kfree(fw_iscsi_stats); 1109 exit_get_data: 1110 return; 1111 } 1112 1113 static void qedi_link_update(void *dev, struct qed_link_output *link) 1114 { 1115 struct qedi_ctx *qedi = (struct qedi_ctx *)dev; 1116 1117 if (link->link_up) { 1118 QEDI_INFO(&qedi->dbg_ctx, QEDI_LOG_INFO, "Link Up event.\n"); 1119 atomic_set(&qedi->link_state, QEDI_LINK_UP); 1120 } else { 1121 QEDI_INFO(&qedi->dbg_ctx, QEDI_LOG_INFO, 1122 "Link Down event.\n"); 1123 atomic_set(&qedi->link_state, QEDI_LINK_DOWN); 1124 } 1125 } 1126 1127 static struct qed_iscsi_cb_ops qedi_cb_ops = { 1128 { 1129 .link_update = qedi_link_update, 1130 .get_protocol_tlv_data = qedi_get_protocol_tlv_data, 1131 .get_generic_tlv_data = qedi_get_generic_tlv_data, 1132 } 1133 }; 1134 1135 static int qedi_queue_cqe(struct qedi_ctx *qedi, union iscsi_cqe *cqe, 1136 u16 que_idx, struct qedi_percpu_s *p) 1137 { 1138 struct qedi_work *qedi_work; 1139 struct qedi_conn *q_conn; 1140 struct iscsi_conn *conn; 1141 struct qedi_cmd *qedi_cmd; 1142 u32 iscsi_cid; 1143 int rc = 0; 1144 1145 iscsi_cid = cqe->cqe_common.conn_id; 1146 q_conn = qedi->cid_que.conn_cid_tbl[iscsi_cid]; 1147 if (!q_conn) { 1148 QEDI_WARN(&qedi->dbg_ctx, 1149 "Session no longer exists for cid=0x%x!!\n", 1150 iscsi_cid); 1151 return -1; 1152 } 1153 conn = q_conn->cls_conn->dd_data; 1154 1155 switch (cqe->cqe_common.cqe_type) { 1156 case ISCSI_CQE_TYPE_SOLICITED: 1157 case ISCSI_CQE_TYPE_SOLICITED_WITH_SENSE: 1158 qedi_cmd = qedi_get_cmd_from_tid(qedi, cqe->cqe_solicited.itid); 1159 if (!qedi_cmd) { 1160 rc = -1; 1161 break; 1162 } 1163 INIT_LIST_HEAD(&qedi_cmd->cqe_work.list); 1164 qedi_cmd->cqe_work.qedi = qedi; 1165 memcpy(&qedi_cmd->cqe_work.cqe, cqe, sizeof(union iscsi_cqe)); 1166 qedi_cmd->cqe_work.que_idx = que_idx; 1167 qedi_cmd->cqe_work.is_solicited = true; 1168 list_add_tail(&qedi_cmd->cqe_work.list, &p->work_list); 1169 break; 1170 case ISCSI_CQE_TYPE_UNSOLICITED: 1171 case ISCSI_CQE_TYPE_DUMMY: 1172 case ISCSI_CQE_TYPE_TASK_CLEANUP: 1173 qedi_work = kzalloc(sizeof(*qedi_work), GFP_ATOMIC); 1174 if (!qedi_work) { 1175 rc = -1; 1176 break; 1177 } 1178 INIT_LIST_HEAD(&qedi_work->list); 1179 qedi_work->qedi = qedi; 1180 memcpy(&qedi_work->cqe, cqe, sizeof(union iscsi_cqe)); 1181 qedi_work->que_idx = que_idx; 1182 qedi_work->is_solicited = false; 1183 list_add_tail(&qedi_work->list, &p->work_list); 1184 break; 1185 default: 1186 rc = -1; 1187 QEDI_ERR(&qedi->dbg_ctx, "FW Error cqe.\n"); 1188 } 1189 return rc; 1190 } 1191 1192 static bool qedi_process_completions(struct qedi_fastpath *fp) 1193 { 1194 struct qedi_ctx *qedi = fp->qedi; 1195 struct qed_sb_info *sb_info = fp->sb_info; 1196 struct status_block_e4 *sb = sb_info->sb_virt; 1197 struct qedi_percpu_s *p = NULL; 1198 struct global_queue *que; 1199 u16 prod_idx; 1200 unsigned long flags; 1201 union iscsi_cqe *cqe; 1202 int cpu; 1203 int ret; 1204 1205 /* Get the current firmware producer index */ 1206 prod_idx = sb->pi_array[QEDI_PROTO_CQ_PROD_IDX]; 1207 1208 if (prod_idx >= QEDI_CQ_SIZE) 1209 prod_idx = prod_idx % QEDI_CQ_SIZE; 1210 1211 que = qedi->global_queues[fp->sb_id]; 1212 QEDI_INFO(&qedi->dbg_ctx, QEDI_LOG_IO, 1213 "Before: global queue=%p prod_idx=%d cons_idx=%d, sb_id=%d\n", 1214 que, prod_idx, que->cq_cons_idx, fp->sb_id); 1215 1216 qedi->intr_cpu = fp->sb_id; 1217 cpu = smp_processor_id(); 1218 p = &per_cpu(qedi_percpu, cpu); 1219 1220 if (unlikely(!p->iothread)) 1221 WARN_ON(1); 1222 1223 spin_lock_irqsave(&p->p_work_lock, flags); 1224 while (que->cq_cons_idx != prod_idx) { 1225 cqe = &que->cq[que->cq_cons_idx]; 1226 1227 QEDI_INFO(&qedi->dbg_ctx, QEDI_LOG_IO, 1228 "cqe=%p prod_idx=%d cons_idx=%d.\n", 1229 cqe, prod_idx, que->cq_cons_idx); 1230 1231 ret = qedi_queue_cqe(qedi, cqe, fp->sb_id, p); 1232 if (ret) 1233 QEDI_WARN(&qedi->dbg_ctx, 1234 "Dropping CQE 0x%x for cid=0x%x.\n", 1235 que->cq_cons_idx, cqe->cqe_common.conn_id); 1236 1237 que->cq_cons_idx++; 1238 if (que->cq_cons_idx == QEDI_CQ_SIZE) 1239 que->cq_cons_idx = 0; 1240 } 1241 wake_up_process(p->iothread); 1242 spin_unlock_irqrestore(&p->p_work_lock, flags); 1243 1244 return true; 1245 } 1246 1247 static bool qedi_fp_has_work(struct qedi_fastpath *fp) 1248 { 1249 struct qedi_ctx *qedi = fp->qedi; 1250 struct global_queue *que; 1251 struct qed_sb_info *sb_info = fp->sb_info; 1252 struct status_block_e4 *sb = sb_info->sb_virt; 1253 u16 prod_idx; 1254 1255 barrier(); 1256 1257 /* Get the current firmware producer index */ 1258 prod_idx = sb->pi_array[QEDI_PROTO_CQ_PROD_IDX]; 1259 1260 /* Get the pointer to the global CQ this completion is on */ 1261 que = qedi->global_queues[fp->sb_id]; 1262 1263 /* prod idx wrap around uint16 */ 1264 if (prod_idx >= QEDI_CQ_SIZE) 1265 prod_idx = prod_idx % QEDI_CQ_SIZE; 1266 1267 return (que->cq_cons_idx != prod_idx); 1268 } 1269 1270 /* MSI-X fastpath handler code */ 1271 static irqreturn_t qedi_msix_handler(int irq, void *dev_id) 1272 { 1273 struct qedi_fastpath *fp = dev_id; 1274 struct qedi_ctx *qedi = fp->qedi; 1275 bool wake_io_thread = true; 1276 1277 qed_sb_ack(fp->sb_info, IGU_INT_DISABLE, 0); 1278 1279 process_again: 1280 wake_io_thread = qedi_process_completions(fp); 1281 if (wake_io_thread) { 1282 QEDI_INFO(&qedi->dbg_ctx, QEDI_LOG_DISC, 1283 "process already running\n"); 1284 } 1285 1286 if (qedi_fp_has_work(fp) == 0) 1287 qed_sb_update_sb_idx(fp->sb_info); 1288 1289 /* Check for more work */ 1290 rmb(); 1291 1292 if (qedi_fp_has_work(fp) == 0) 1293 qed_sb_ack(fp->sb_info, IGU_INT_ENABLE, 1); 1294 else 1295 goto process_again; 1296 1297 return IRQ_HANDLED; 1298 } 1299 1300 /* simd handler for MSI/INTa */ 1301 static void qedi_simd_int_handler(void *cookie) 1302 { 1303 /* Cookie is qedi_ctx struct */ 1304 struct qedi_ctx *qedi = (struct qedi_ctx *)cookie; 1305 1306 QEDI_WARN(&qedi->dbg_ctx, "qedi=%p.\n", qedi); 1307 } 1308 1309 #define QEDI_SIMD_HANDLER_NUM 0 1310 static void qedi_sync_free_irqs(struct qedi_ctx *qedi) 1311 { 1312 int i; 1313 1314 if (qedi->int_info.msix_cnt) { 1315 for (i = 0; i < qedi->int_info.used_cnt; i++) { 1316 synchronize_irq(qedi->int_info.msix[i].vector); 1317 irq_set_affinity_hint(qedi->int_info.msix[i].vector, 1318 NULL); 1319 free_irq(qedi->int_info.msix[i].vector, 1320 &qedi->fp_array[i]); 1321 } 1322 } else { 1323 qedi_ops->common->simd_handler_clean(qedi->cdev, 1324 QEDI_SIMD_HANDLER_NUM); 1325 } 1326 1327 qedi->int_info.used_cnt = 0; 1328 qedi_ops->common->set_fp_int(qedi->cdev, 0); 1329 } 1330 1331 static int qedi_request_msix_irq(struct qedi_ctx *qedi) 1332 { 1333 int i, rc, cpu; 1334 1335 cpu = cpumask_first(cpu_online_mask); 1336 for (i = 0; i < qedi->int_info.msix_cnt; i++) { 1337 rc = request_irq(qedi->int_info.msix[i].vector, 1338 qedi_msix_handler, 0, "qedi", 1339 &qedi->fp_array[i]); 1340 1341 if (rc) { 1342 QEDI_WARN(&qedi->dbg_ctx, "request_irq failed.\n"); 1343 qedi_sync_free_irqs(qedi); 1344 return rc; 1345 } 1346 qedi->int_info.used_cnt++; 1347 rc = irq_set_affinity_hint(qedi->int_info.msix[i].vector, 1348 get_cpu_mask(cpu)); 1349 cpu = cpumask_next(cpu, cpu_online_mask); 1350 } 1351 1352 return 0; 1353 } 1354 1355 static int qedi_setup_int(struct qedi_ctx *qedi) 1356 { 1357 int rc = 0; 1358 1359 rc = qedi_ops->common->set_fp_int(qedi->cdev, num_online_cpus()); 1360 rc = qedi_ops->common->get_fp_int(qedi->cdev, &qedi->int_info); 1361 if (rc) 1362 goto exit_setup_int; 1363 1364 QEDI_INFO(&qedi->dbg_ctx, QEDI_LOG_DISC, 1365 "Number of msix_cnt = 0x%x num of cpus = 0x%x\n", 1366 qedi->int_info.msix_cnt, num_online_cpus()); 1367 1368 if (qedi->int_info.msix_cnt) { 1369 rc = qedi_request_msix_irq(qedi); 1370 goto exit_setup_int; 1371 } else { 1372 qedi_ops->common->simd_handler_config(qedi->cdev, &qedi, 1373 QEDI_SIMD_HANDLER_NUM, 1374 qedi_simd_int_handler); 1375 qedi->int_info.used_cnt = 1; 1376 } 1377 1378 exit_setup_int: 1379 return rc; 1380 } 1381 1382 static void qedi_free_nvm_iscsi_cfg(struct qedi_ctx *qedi) 1383 { 1384 if (qedi->iscsi_image) 1385 dma_free_coherent(&qedi->pdev->dev, 1386 sizeof(struct qedi_nvm_iscsi_image), 1387 qedi->iscsi_image, qedi->nvm_buf_dma); 1388 } 1389 1390 static int qedi_alloc_nvm_iscsi_cfg(struct qedi_ctx *qedi) 1391 { 1392 qedi->iscsi_image = dma_alloc_coherent(&qedi->pdev->dev, 1393 sizeof(struct qedi_nvm_iscsi_image), 1394 &qedi->nvm_buf_dma, GFP_KERNEL); 1395 if (!qedi->iscsi_image) { 1396 QEDI_ERR(&qedi->dbg_ctx, "Could not allocate NVM BUF.\n"); 1397 return -ENOMEM; 1398 } 1399 QEDI_INFO(&qedi->dbg_ctx, QEDI_LOG_INFO, 1400 "NVM BUF addr=0x%p dma=0x%llx.\n", qedi->iscsi_image, 1401 qedi->nvm_buf_dma); 1402 1403 return 0; 1404 } 1405 1406 static void qedi_free_bdq(struct qedi_ctx *qedi) 1407 { 1408 int i; 1409 1410 if (qedi->bdq_pbl_list) 1411 dma_free_coherent(&qedi->pdev->dev, QEDI_PAGE_SIZE, 1412 qedi->bdq_pbl_list, qedi->bdq_pbl_list_dma); 1413 1414 if (qedi->bdq_pbl) 1415 dma_free_coherent(&qedi->pdev->dev, qedi->bdq_pbl_mem_size, 1416 qedi->bdq_pbl, qedi->bdq_pbl_dma); 1417 1418 for (i = 0; i < QEDI_BDQ_NUM; i++) { 1419 if (qedi->bdq[i].buf_addr) { 1420 dma_free_coherent(&qedi->pdev->dev, QEDI_BDQ_BUF_SIZE, 1421 qedi->bdq[i].buf_addr, 1422 qedi->bdq[i].buf_dma); 1423 } 1424 } 1425 } 1426 1427 static void qedi_free_global_queues(struct qedi_ctx *qedi) 1428 { 1429 int i; 1430 struct global_queue **gl = qedi->global_queues; 1431 1432 for (i = 0; i < qedi->num_queues; i++) { 1433 if (!gl[i]) 1434 continue; 1435 1436 if (gl[i]->cq) 1437 dma_free_coherent(&qedi->pdev->dev, gl[i]->cq_mem_size, 1438 gl[i]->cq, gl[i]->cq_dma); 1439 if (gl[i]->cq_pbl) 1440 dma_free_coherent(&qedi->pdev->dev, gl[i]->cq_pbl_size, 1441 gl[i]->cq_pbl, gl[i]->cq_pbl_dma); 1442 1443 kfree(gl[i]); 1444 } 1445 qedi_free_bdq(qedi); 1446 qedi_free_nvm_iscsi_cfg(qedi); 1447 } 1448 1449 static int qedi_alloc_bdq(struct qedi_ctx *qedi) 1450 { 1451 int i; 1452 struct scsi_bd *pbl; 1453 u64 *list; 1454 dma_addr_t page; 1455 1456 /* Alloc dma memory for BDQ buffers */ 1457 for (i = 0; i < QEDI_BDQ_NUM; i++) { 1458 qedi->bdq[i].buf_addr = 1459 dma_alloc_coherent(&qedi->pdev->dev, 1460 QEDI_BDQ_BUF_SIZE, 1461 &qedi->bdq[i].buf_dma, 1462 GFP_KERNEL); 1463 if (!qedi->bdq[i].buf_addr) { 1464 QEDI_ERR(&qedi->dbg_ctx, 1465 "Could not allocate BDQ buffer %d.\n", i); 1466 return -ENOMEM; 1467 } 1468 } 1469 1470 /* Alloc dma memory for BDQ page buffer list */ 1471 qedi->bdq_pbl_mem_size = QEDI_BDQ_NUM * sizeof(struct scsi_bd); 1472 qedi->bdq_pbl_mem_size = ALIGN(qedi->bdq_pbl_mem_size, QEDI_PAGE_SIZE); 1473 qedi->rq_num_entries = qedi->bdq_pbl_mem_size / sizeof(struct scsi_bd); 1474 1475 QEDI_INFO(&qedi->dbg_ctx, QEDI_LOG_CONN, "rq_num_entries = %d.\n", 1476 qedi->rq_num_entries); 1477 1478 qedi->bdq_pbl = dma_alloc_coherent(&qedi->pdev->dev, 1479 qedi->bdq_pbl_mem_size, 1480 &qedi->bdq_pbl_dma, GFP_KERNEL); 1481 if (!qedi->bdq_pbl) { 1482 QEDI_ERR(&qedi->dbg_ctx, "Could not allocate BDQ PBL.\n"); 1483 return -ENOMEM; 1484 } 1485 1486 /* 1487 * Populate BDQ PBL with physical and virtual address of individual 1488 * BDQ buffers 1489 */ 1490 pbl = (struct scsi_bd *)qedi->bdq_pbl; 1491 for (i = 0; i < QEDI_BDQ_NUM; i++) { 1492 pbl->address.hi = 1493 cpu_to_le32(QEDI_U64_HI(qedi->bdq[i].buf_dma)); 1494 pbl->address.lo = 1495 cpu_to_le32(QEDI_U64_LO(qedi->bdq[i].buf_dma)); 1496 QEDI_INFO(&qedi->dbg_ctx, QEDI_LOG_CONN, 1497 "pbl [0x%p] pbl->address hi [0x%llx] lo [0x%llx], idx [%d]\n", 1498 pbl, pbl->address.hi, pbl->address.lo, i); 1499 pbl->opaque.iscsi_opaque.reserved_zero[0] = 0; 1500 pbl->opaque.iscsi_opaque.reserved_zero[1] = 0; 1501 pbl->opaque.iscsi_opaque.reserved_zero[2] = 0; 1502 pbl->opaque.iscsi_opaque.opaque = cpu_to_le16(i); 1503 pbl++; 1504 } 1505 1506 /* Allocate list of PBL pages */ 1507 qedi->bdq_pbl_list = dma_alloc_coherent(&qedi->pdev->dev, 1508 QEDI_PAGE_SIZE, 1509 &qedi->bdq_pbl_list_dma, 1510 GFP_KERNEL); 1511 if (!qedi->bdq_pbl_list) { 1512 QEDI_ERR(&qedi->dbg_ctx, 1513 "Could not allocate list of PBL pages.\n"); 1514 return -ENOMEM; 1515 } 1516 1517 /* 1518 * Now populate PBL list with pages that contain pointers to the 1519 * individual buffers. 1520 */ 1521 qedi->bdq_pbl_list_num_entries = qedi->bdq_pbl_mem_size / 1522 QEDI_PAGE_SIZE; 1523 list = (u64 *)qedi->bdq_pbl_list; 1524 page = qedi->bdq_pbl_list_dma; 1525 for (i = 0; i < qedi->bdq_pbl_list_num_entries; i++) { 1526 *list = qedi->bdq_pbl_dma; 1527 list++; 1528 page += QEDI_PAGE_SIZE; 1529 } 1530 1531 return 0; 1532 } 1533 1534 static int qedi_alloc_global_queues(struct qedi_ctx *qedi) 1535 { 1536 u32 *list; 1537 int i; 1538 int status = 0, rc; 1539 u32 *pbl; 1540 dma_addr_t page; 1541 int num_pages; 1542 1543 /* 1544 * Number of global queues (CQ / RQ). This should 1545 * be <= number of available MSIX vectors for the PF 1546 */ 1547 if (!qedi->num_queues) { 1548 QEDI_ERR(&qedi->dbg_ctx, "No MSI-X vectors available!\n"); 1549 return 1; 1550 } 1551 1552 /* Make sure we allocated the PBL that will contain the physical 1553 * addresses of our queues 1554 */ 1555 if (!qedi->p_cpuq) { 1556 status = 1; 1557 goto mem_alloc_failure; 1558 } 1559 1560 qedi->global_queues = kzalloc((sizeof(struct global_queue *) * 1561 qedi->num_queues), GFP_KERNEL); 1562 if (!qedi->global_queues) { 1563 QEDI_ERR(&qedi->dbg_ctx, 1564 "Unable to allocate global queues array ptr memory\n"); 1565 return -ENOMEM; 1566 } 1567 QEDI_INFO(&qedi->dbg_ctx, QEDI_LOG_DISC, 1568 "qedi->global_queues=%p.\n", qedi->global_queues); 1569 1570 /* Allocate DMA coherent buffers for BDQ */ 1571 rc = qedi_alloc_bdq(qedi); 1572 if (rc) 1573 goto mem_alloc_failure; 1574 1575 /* Allocate DMA coherent buffers for NVM_ISCSI_CFG */ 1576 rc = qedi_alloc_nvm_iscsi_cfg(qedi); 1577 if (rc) 1578 goto mem_alloc_failure; 1579 1580 /* Allocate a CQ and an associated PBL for each MSI-X 1581 * vector. 1582 */ 1583 for (i = 0; i < qedi->num_queues; i++) { 1584 qedi->global_queues[i] = 1585 kzalloc(sizeof(*qedi->global_queues[0]), 1586 GFP_KERNEL); 1587 if (!qedi->global_queues[i]) { 1588 QEDI_ERR(&qedi->dbg_ctx, 1589 "Unable to allocation global queue %d.\n", i); 1590 goto mem_alloc_failure; 1591 } 1592 1593 qedi->global_queues[i]->cq_mem_size = 1594 (QEDI_CQ_SIZE + 8) * sizeof(union iscsi_cqe); 1595 qedi->global_queues[i]->cq_mem_size = 1596 (qedi->global_queues[i]->cq_mem_size + 1597 (QEDI_PAGE_SIZE - 1)); 1598 1599 qedi->global_queues[i]->cq_pbl_size = 1600 (qedi->global_queues[i]->cq_mem_size / 1601 QEDI_PAGE_SIZE) * sizeof(void *); 1602 qedi->global_queues[i]->cq_pbl_size = 1603 (qedi->global_queues[i]->cq_pbl_size + 1604 (QEDI_PAGE_SIZE - 1)); 1605 1606 qedi->global_queues[i]->cq = dma_alloc_coherent(&qedi->pdev->dev, 1607 qedi->global_queues[i]->cq_mem_size, 1608 &qedi->global_queues[i]->cq_dma, 1609 GFP_KERNEL); 1610 1611 if (!qedi->global_queues[i]->cq) { 1612 QEDI_WARN(&qedi->dbg_ctx, 1613 "Could not allocate cq.\n"); 1614 status = -ENOMEM; 1615 goto mem_alloc_failure; 1616 } 1617 qedi->global_queues[i]->cq_pbl = dma_alloc_coherent(&qedi->pdev->dev, 1618 qedi->global_queues[i]->cq_pbl_size, 1619 &qedi->global_queues[i]->cq_pbl_dma, 1620 GFP_KERNEL); 1621 1622 if (!qedi->global_queues[i]->cq_pbl) { 1623 QEDI_WARN(&qedi->dbg_ctx, 1624 "Could not allocate cq PBL.\n"); 1625 status = -ENOMEM; 1626 goto mem_alloc_failure; 1627 } 1628 1629 /* Create PBL */ 1630 num_pages = qedi->global_queues[i]->cq_mem_size / 1631 QEDI_PAGE_SIZE; 1632 page = qedi->global_queues[i]->cq_dma; 1633 pbl = (u32 *)qedi->global_queues[i]->cq_pbl; 1634 1635 while (num_pages--) { 1636 *pbl = (u32)page; 1637 pbl++; 1638 *pbl = (u32)((u64)page >> 32); 1639 pbl++; 1640 page += QEDI_PAGE_SIZE; 1641 } 1642 } 1643 1644 list = (u32 *)qedi->p_cpuq; 1645 1646 /* 1647 * The list is built as follows: CQ#0 PBL pointer, RQ#0 PBL pointer, 1648 * CQ#1 PBL pointer, RQ#1 PBL pointer, etc. Each PBL pointer points 1649 * to the physical address which contains an array of pointers to the 1650 * physical addresses of the specific queue pages. 1651 */ 1652 for (i = 0; i < qedi->num_queues; i++) { 1653 *list = (u32)qedi->global_queues[i]->cq_pbl_dma; 1654 list++; 1655 *list = (u32)((u64)qedi->global_queues[i]->cq_pbl_dma >> 32); 1656 list++; 1657 1658 *list = (u32)0; 1659 list++; 1660 *list = (u32)((u64)0 >> 32); 1661 list++; 1662 } 1663 1664 return 0; 1665 1666 mem_alloc_failure: 1667 qedi_free_global_queues(qedi); 1668 return status; 1669 } 1670 1671 int qedi_alloc_sq(struct qedi_ctx *qedi, struct qedi_endpoint *ep) 1672 { 1673 int rval = 0; 1674 u32 *pbl; 1675 dma_addr_t page; 1676 int num_pages; 1677 1678 if (!ep) 1679 return -EIO; 1680 1681 /* Calculate appropriate queue and PBL sizes */ 1682 ep->sq_mem_size = QEDI_SQ_SIZE * sizeof(struct iscsi_wqe); 1683 ep->sq_mem_size += QEDI_PAGE_SIZE - 1; 1684 1685 ep->sq_pbl_size = (ep->sq_mem_size / QEDI_PAGE_SIZE) * sizeof(void *); 1686 ep->sq_pbl_size = ep->sq_pbl_size + QEDI_PAGE_SIZE; 1687 1688 ep->sq = dma_alloc_coherent(&qedi->pdev->dev, ep->sq_mem_size, 1689 &ep->sq_dma, GFP_KERNEL); 1690 if (!ep->sq) { 1691 QEDI_WARN(&qedi->dbg_ctx, 1692 "Could not allocate send queue.\n"); 1693 rval = -ENOMEM; 1694 goto out; 1695 } 1696 ep->sq_pbl = dma_alloc_coherent(&qedi->pdev->dev, ep->sq_pbl_size, 1697 &ep->sq_pbl_dma, GFP_KERNEL); 1698 if (!ep->sq_pbl) { 1699 QEDI_WARN(&qedi->dbg_ctx, 1700 "Could not allocate send queue PBL.\n"); 1701 rval = -ENOMEM; 1702 goto out_free_sq; 1703 } 1704 1705 /* Create PBL */ 1706 num_pages = ep->sq_mem_size / QEDI_PAGE_SIZE; 1707 page = ep->sq_dma; 1708 pbl = (u32 *)ep->sq_pbl; 1709 1710 while (num_pages--) { 1711 *pbl = (u32)page; 1712 pbl++; 1713 *pbl = (u32)((u64)page >> 32); 1714 pbl++; 1715 page += QEDI_PAGE_SIZE; 1716 } 1717 1718 return rval; 1719 1720 out_free_sq: 1721 dma_free_coherent(&qedi->pdev->dev, ep->sq_mem_size, ep->sq, 1722 ep->sq_dma); 1723 out: 1724 return rval; 1725 } 1726 1727 void qedi_free_sq(struct qedi_ctx *qedi, struct qedi_endpoint *ep) 1728 { 1729 if (ep->sq_pbl) 1730 dma_free_coherent(&qedi->pdev->dev, ep->sq_pbl_size, ep->sq_pbl, 1731 ep->sq_pbl_dma); 1732 if (ep->sq) 1733 dma_free_coherent(&qedi->pdev->dev, ep->sq_mem_size, ep->sq, 1734 ep->sq_dma); 1735 } 1736 1737 int qedi_get_task_idx(struct qedi_ctx *qedi) 1738 { 1739 s16 tmp_idx; 1740 1741 again: 1742 tmp_idx = find_first_zero_bit(qedi->task_idx_map, 1743 MAX_ISCSI_TASK_ENTRIES); 1744 1745 if (tmp_idx >= MAX_ISCSI_TASK_ENTRIES) { 1746 QEDI_ERR(&qedi->dbg_ctx, "FW task context pool is full.\n"); 1747 tmp_idx = -1; 1748 goto err_idx; 1749 } 1750 1751 if (test_and_set_bit(tmp_idx, qedi->task_idx_map)) 1752 goto again; 1753 1754 err_idx: 1755 return tmp_idx; 1756 } 1757 1758 void qedi_clear_task_idx(struct qedi_ctx *qedi, int idx) 1759 { 1760 if (!test_and_clear_bit(idx, qedi->task_idx_map)) 1761 QEDI_ERR(&qedi->dbg_ctx, 1762 "FW task context, already cleared, tid=0x%x\n", idx); 1763 } 1764 1765 void qedi_update_itt_map(struct qedi_ctx *qedi, u32 tid, u32 proto_itt, 1766 struct qedi_cmd *cmd) 1767 { 1768 qedi->itt_map[tid].itt = proto_itt; 1769 qedi->itt_map[tid].p_cmd = cmd; 1770 1771 QEDI_INFO(&qedi->dbg_ctx, QEDI_LOG_CONN, 1772 "update itt map tid=0x%x, with proto itt=0x%x\n", tid, 1773 qedi->itt_map[tid].itt); 1774 } 1775 1776 void qedi_get_task_tid(struct qedi_ctx *qedi, u32 itt, s16 *tid) 1777 { 1778 u16 i; 1779 1780 for (i = 0; i < MAX_ISCSI_TASK_ENTRIES; i++) { 1781 if (qedi->itt_map[i].itt == itt) { 1782 *tid = i; 1783 QEDI_INFO(&qedi->dbg_ctx, QEDI_LOG_CONN, 1784 "Ref itt=0x%x, found at tid=0x%x\n", 1785 itt, *tid); 1786 return; 1787 } 1788 } 1789 1790 WARN_ON(1); 1791 } 1792 1793 void qedi_get_proto_itt(struct qedi_ctx *qedi, u32 tid, u32 *proto_itt) 1794 { 1795 *proto_itt = qedi->itt_map[tid].itt; 1796 QEDI_INFO(&qedi->dbg_ctx, QEDI_LOG_CONN, 1797 "Get itt map tid [0x%x with proto itt[0x%x]", 1798 tid, *proto_itt); 1799 } 1800 1801 struct qedi_cmd *qedi_get_cmd_from_tid(struct qedi_ctx *qedi, u32 tid) 1802 { 1803 struct qedi_cmd *cmd = NULL; 1804 1805 if (tid >= MAX_ISCSI_TASK_ENTRIES) 1806 return NULL; 1807 1808 cmd = qedi->itt_map[tid].p_cmd; 1809 if (cmd->task_id != tid) 1810 return NULL; 1811 1812 qedi->itt_map[tid].p_cmd = NULL; 1813 1814 return cmd; 1815 } 1816 1817 static int qedi_alloc_itt(struct qedi_ctx *qedi) 1818 { 1819 qedi->itt_map = kcalloc(MAX_ISCSI_TASK_ENTRIES, 1820 sizeof(struct qedi_itt_map), GFP_KERNEL); 1821 if (!qedi->itt_map) { 1822 QEDI_ERR(&qedi->dbg_ctx, 1823 "Unable to allocate itt map array memory\n"); 1824 return -ENOMEM; 1825 } 1826 return 0; 1827 } 1828 1829 static void qedi_free_itt(struct qedi_ctx *qedi) 1830 { 1831 kfree(qedi->itt_map); 1832 } 1833 1834 static struct qed_ll2_cb_ops qedi_ll2_cb_ops = { 1835 .rx_cb = qedi_ll2_rx, 1836 .tx_cb = NULL, 1837 }; 1838 1839 static int qedi_percpu_io_thread(void *arg) 1840 { 1841 struct qedi_percpu_s *p = arg; 1842 struct qedi_work *work, *tmp; 1843 unsigned long flags; 1844 LIST_HEAD(work_list); 1845 1846 set_user_nice(current, -20); 1847 1848 while (!kthread_should_stop()) { 1849 spin_lock_irqsave(&p->p_work_lock, flags); 1850 while (!list_empty(&p->work_list)) { 1851 list_splice_init(&p->work_list, &work_list); 1852 spin_unlock_irqrestore(&p->p_work_lock, flags); 1853 1854 list_for_each_entry_safe(work, tmp, &work_list, list) { 1855 list_del_init(&work->list); 1856 qedi_fp_process_cqes(work); 1857 if (!work->is_solicited) 1858 kfree(work); 1859 } 1860 cond_resched(); 1861 spin_lock_irqsave(&p->p_work_lock, flags); 1862 } 1863 set_current_state(TASK_INTERRUPTIBLE); 1864 spin_unlock_irqrestore(&p->p_work_lock, flags); 1865 schedule(); 1866 } 1867 __set_current_state(TASK_RUNNING); 1868 1869 return 0; 1870 } 1871 1872 static int qedi_cpu_online(unsigned int cpu) 1873 { 1874 struct qedi_percpu_s *p = this_cpu_ptr(&qedi_percpu); 1875 struct task_struct *thread; 1876 1877 thread = kthread_create_on_node(qedi_percpu_io_thread, (void *)p, 1878 cpu_to_node(cpu), 1879 "qedi_thread/%d", cpu); 1880 if (IS_ERR(thread)) 1881 return PTR_ERR(thread); 1882 1883 kthread_bind(thread, cpu); 1884 p->iothread = thread; 1885 wake_up_process(thread); 1886 return 0; 1887 } 1888 1889 static int qedi_cpu_offline(unsigned int cpu) 1890 { 1891 struct qedi_percpu_s *p = this_cpu_ptr(&qedi_percpu); 1892 struct qedi_work *work, *tmp; 1893 struct task_struct *thread; 1894 1895 spin_lock_bh(&p->p_work_lock); 1896 thread = p->iothread; 1897 p->iothread = NULL; 1898 1899 list_for_each_entry_safe(work, tmp, &p->work_list, list) { 1900 list_del_init(&work->list); 1901 qedi_fp_process_cqes(work); 1902 if (!work->is_solicited) 1903 kfree(work); 1904 } 1905 1906 spin_unlock_bh(&p->p_work_lock); 1907 if (thread) 1908 kthread_stop(thread); 1909 return 0; 1910 } 1911 1912 void qedi_reset_host_mtu(struct qedi_ctx *qedi, u16 mtu) 1913 { 1914 struct qed_ll2_params params; 1915 1916 qedi_recover_all_conns(qedi); 1917 1918 qedi_ops->ll2->stop(qedi->cdev); 1919 qedi_ll2_free_skbs(qedi); 1920 1921 QEDI_INFO(&qedi->dbg_ctx, QEDI_LOG_INFO, "old MTU %u, new MTU %u\n", 1922 qedi->ll2_mtu, mtu); 1923 memset(¶ms, 0, sizeof(params)); 1924 qedi->ll2_mtu = mtu; 1925 params.mtu = qedi->ll2_mtu + IPV6_HDR_LEN + TCP_HDR_LEN; 1926 params.drop_ttl0_packets = 0; 1927 params.rx_vlan_stripping = 1; 1928 ether_addr_copy(params.ll2_mac_address, qedi->dev_info.common.hw_mac); 1929 qedi_ops->ll2->start(qedi->cdev, ¶ms); 1930 } 1931 1932 /** 1933 * qedi_get_nvram_block: - Scan through the iSCSI NVRAM block (while accounting 1934 * for gaps) for the matching absolute-pf-id of the QEDI device. 1935 */ 1936 static struct nvm_iscsi_block * 1937 qedi_get_nvram_block(struct qedi_ctx *qedi) 1938 { 1939 int i; 1940 u8 pf; 1941 u32 flags; 1942 struct nvm_iscsi_block *block; 1943 1944 pf = qedi->dev_info.common.abs_pf_id; 1945 block = &qedi->iscsi_image->iscsi_cfg.block[0]; 1946 for (i = 0; i < NUM_OF_ISCSI_PF_SUPPORTED; i++, block++) { 1947 flags = ((block->id) & NVM_ISCSI_CFG_BLK_CTRL_FLAG_MASK) >> 1948 NVM_ISCSI_CFG_BLK_CTRL_FLAG_OFFSET; 1949 if (flags & (NVM_ISCSI_CFG_BLK_CTRL_FLAG_IS_NOT_EMPTY | 1950 NVM_ISCSI_CFG_BLK_CTRL_FLAG_PF_MAPPED) && 1951 (pf == (block->id & NVM_ISCSI_CFG_BLK_MAPPED_PF_ID_MASK) 1952 >> NVM_ISCSI_CFG_BLK_MAPPED_PF_ID_OFFSET)) 1953 return block; 1954 } 1955 return NULL; 1956 } 1957 1958 static ssize_t qedi_show_boot_eth_info(void *data, int type, char *buf) 1959 { 1960 struct qedi_ctx *qedi = data; 1961 struct nvm_iscsi_initiator *initiator; 1962 int rc = 1; 1963 u32 ipv6_en, dhcp_en, ip_len; 1964 struct nvm_iscsi_block *block; 1965 char *fmt, *ip, *sub, *gw; 1966 1967 block = qedi_get_nvram_block(qedi); 1968 if (!block) 1969 return 0; 1970 1971 initiator = &block->initiator; 1972 ipv6_en = block->generic.ctrl_flags & 1973 NVM_ISCSI_CFG_GEN_IPV6_ENABLED; 1974 dhcp_en = block->generic.ctrl_flags & 1975 NVM_ISCSI_CFG_GEN_DHCP_TCPIP_CONFIG_ENABLED; 1976 /* Static IP assignments. */ 1977 fmt = ipv6_en ? "%pI6\n" : "%pI4\n"; 1978 ip = ipv6_en ? initiator->ipv6.addr.byte : initiator->ipv4.addr.byte; 1979 ip_len = ipv6_en ? IPV6_LEN : IPV4_LEN; 1980 sub = ipv6_en ? initiator->ipv6.subnet_mask.byte : 1981 initiator->ipv4.subnet_mask.byte; 1982 gw = ipv6_en ? initiator->ipv6.gateway.byte : 1983 initiator->ipv4.gateway.byte; 1984 /* DHCP IP adjustments. */ 1985 fmt = dhcp_en ? "%s\n" : fmt; 1986 if (dhcp_en) { 1987 ip = ipv6_en ? "0::0" : "0.0.0.0"; 1988 sub = ip; 1989 gw = ip; 1990 ip_len = ipv6_en ? 5 : 8; 1991 } 1992 1993 switch (type) { 1994 case ISCSI_BOOT_ETH_IP_ADDR: 1995 rc = snprintf(buf, ip_len, fmt, ip); 1996 break; 1997 case ISCSI_BOOT_ETH_SUBNET_MASK: 1998 rc = snprintf(buf, ip_len, fmt, sub); 1999 break; 2000 case ISCSI_BOOT_ETH_GATEWAY: 2001 rc = snprintf(buf, ip_len, fmt, gw); 2002 break; 2003 case ISCSI_BOOT_ETH_FLAGS: 2004 rc = snprintf(buf, 3, "%hhd\n", 2005 SYSFS_FLAG_FW_SEL_BOOT); 2006 break; 2007 case ISCSI_BOOT_ETH_INDEX: 2008 rc = snprintf(buf, 3, "0\n"); 2009 break; 2010 case ISCSI_BOOT_ETH_MAC: 2011 rc = sysfs_format_mac(buf, qedi->mac, ETH_ALEN); 2012 break; 2013 case ISCSI_BOOT_ETH_VLAN: 2014 rc = snprintf(buf, 12, "%d\n", 2015 GET_FIELD2(initiator->generic_cont0, 2016 NVM_ISCSI_CFG_INITIATOR_VLAN)); 2017 break; 2018 case ISCSI_BOOT_ETH_ORIGIN: 2019 if (dhcp_en) 2020 rc = snprintf(buf, 3, "3\n"); 2021 break; 2022 default: 2023 rc = 0; 2024 break; 2025 } 2026 2027 return rc; 2028 } 2029 2030 static umode_t qedi_eth_get_attr_visibility(void *data, int type) 2031 { 2032 int rc = 1; 2033 2034 switch (type) { 2035 case ISCSI_BOOT_ETH_FLAGS: 2036 case ISCSI_BOOT_ETH_MAC: 2037 case ISCSI_BOOT_ETH_INDEX: 2038 case ISCSI_BOOT_ETH_IP_ADDR: 2039 case ISCSI_BOOT_ETH_SUBNET_MASK: 2040 case ISCSI_BOOT_ETH_GATEWAY: 2041 case ISCSI_BOOT_ETH_ORIGIN: 2042 case ISCSI_BOOT_ETH_VLAN: 2043 rc = 0444; 2044 break; 2045 default: 2046 rc = 0; 2047 break; 2048 } 2049 return rc; 2050 } 2051 2052 static ssize_t qedi_show_boot_ini_info(void *data, int type, char *buf) 2053 { 2054 struct qedi_ctx *qedi = data; 2055 struct nvm_iscsi_initiator *initiator; 2056 int rc; 2057 struct nvm_iscsi_block *block; 2058 2059 block = qedi_get_nvram_block(qedi); 2060 if (!block) 2061 return 0; 2062 2063 initiator = &block->initiator; 2064 2065 switch (type) { 2066 case ISCSI_BOOT_INI_INITIATOR_NAME: 2067 rc = sprintf(buf, "%.*s\n", NVM_ISCSI_CFG_ISCSI_NAME_MAX_LEN, 2068 initiator->initiator_name.byte); 2069 break; 2070 default: 2071 rc = 0; 2072 break; 2073 } 2074 return rc; 2075 } 2076 2077 static umode_t qedi_ini_get_attr_visibility(void *data, int type) 2078 { 2079 int rc; 2080 2081 switch (type) { 2082 case ISCSI_BOOT_INI_INITIATOR_NAME: 2083 rc = 0444; 2084 break; 2085 default: 2086 rc = 0; 2087 break; 2088 } 2089 return rc; 2090 } 2091 2092 static ssize_t 2093 qedi_show_boot_tgt_info(struct qedi_ctx *qedi, int type, 2094 char *buf, enum qedi_nvm_tgts idx) 2095 { 2096 int rc = 1; 2097 u32 ctrl_flags, ipv6_en, chap_en, mchap_en, ip_len; 2098 struct nvm_iscsi_block *block; 2099 char *chap_name, *chap_secret; 2100 char *mchap_name, *mchap_secret; 2101 2102 block = qedi_get_nvram_block(qedi); 2103 if (!block) 2104 goto exit_show_tgt_info; 2105 2106 QEDI_INFO(&qedi->dbg_ctx, QEDI_LOG_EVT, 2107 "Port:%d, tgt_idx:%d\n", 2108 GET_FIELD2(block->id, NVM_ISCSI_CFG_BLK_MAPPED_PF_ID), idx); 2109 2110 ctrl_flags = block->target[idx].ctrl_flags & 2111 NVM_ISCSI_CFG_TARGET_ENABLED; 2112 2113 if (!ctrl_flags) { 2114 QEDI_INFO(&qedi->dbg_ctx, QEDI_LOG_EVT, 2115 "Target disabled\n"); 2116 goto exit_show_tgt_info; 2117 } 2118 2119 ipv6_en = block->generic.ctrl_flags & 2120 NVM_ISCSI_CFG_GEN_IPV6_ENABLED; 2121 ip_len = ipv6_en ? IPV6_LEN : IPV4_LEN; 2122 chap_en = block->generic.ctrl_flags & 2123 NVM_ISCSI_CFG_GEN_CHAP_ENABLED; 2124 chap_name = chap_en ? block->initiator.chap_name.byte : NULL; 2125 chap_secret = chap_en ? block->initiator.chap_password.byte : NULL; 2126 2127 mchap_en = block->generic.ctrl_flags & 2128 NVM_ISCSI_CFG_GEN_CHAP_MUTUAL_ENABLED; 2129 mchap_name = mchap_en ? block->target[idx].chap_name.byte : NULL; 2130 mchap_secret = mchap_en ? block->target[idx].chap_password.byte : NULL; 2131 2132 switch (type) { 2133 case ISCSI_BOOT_TGT_NAME: 2134 rc = sprintf(buf, "%.*s\n", NVM_ISCSI_CFG_ISCSI_NAME_MAX_LEN, 2135 block->target[idx].target_name.byte); 2136 break; 2137 case ISCSI_BOOT_TGT_IP_ADDR: 2138 if (ipv6_en) 2139 rc = snprintf(buf, ip_len, "%pI6\n", 2140 block->target[idx].ipv6_addr.byte); 2141 else 2142 rc = snprintf(buf, ip_len, "%pI4\n", 2143 block->target[idx].ipv4_addr.byte); 2144 break; 2145 case ISCSI_BOOT_TGT_PORT: 2146 rc = snprintf(buf, 12, "%d\n", 2147 GET_FIELD2(block->target[idx].generic_cont0, 2148 NVM_ISCSI_CFG_TARGET_TCP_PORT)); 2149 break; 2150 case ISCSI_BOOT_TGT_LUN: 2151 rc = snprintf(buf, 22, "%.*d\n", 2152 block->target[idx].lun.value[1], 2153 block->target[idx].lun.value[0]); 2154 break; 2155 case ISCSI_BOOT_TGT_CHAP_NAME: 2156 rc = sprintf(buf, "%.*s\n", NVM_ISCSI_CFG_CHAP_NAME_MAX_LEN, 2157 chap_name); 2158 break; 2159 case ISCSI_BOOT_TGT_CHAP_SECRET: 2160 rc = sprintf(buf, "%.*s\n", NVM_ISCSI_CFG_CHAP_NAME_MAX_LEN, 2161 chap_secret); 2162 break; 2163 case ISCSI_BOOT_TGT_REV_CHAP_NAME: 2164 rc = sprintf(buf, "%.*s\n", NVM_ISCSI_CFG_CHAP_NAME_MAX_LEN, 2165 mchap_name); 2166 break; 2167 case ISCSI_BOOT_TGT_REV_CHAP_SECRET: 2168 rc = sprintf(buf, "%.*s\n", NVM_ISCSI_CFG_CHAP_NAME_MAX_LEN, 2169 mchap_secret); 2170 break; 2171 case ISCSI_BOOT_TGT_FLAGS: 2172 rc = snprintf(buf, 3, "%hhd\n", SYSFS_FLAG_FW_SEL_BOOT); 2173 break; 2174 case ISCSI_BOOT_TGT_NIC_ASSOC: 2175 rc = snprintf(buf, 3, "0\n"); 2176 break; 2177 default: 2178 rc = 0; 2179 break; 2180 } 2181 2182 exit_show_tgt_info: 2183 return rc; 2184 } 2185 2186 static ssize_t qedi_show_boot_tgt_pri_info(void *data, int type, char *buf) 2187 { 2188 struct qedi_ctx *qedi = data; 2189 2190 return qedi_show_boot_tgt_info(qedi, type, buf, QEDI_NVM_TGT_PRI); 2191 } 2192 2193 static ssize_t qedi_show_boot_tgt_sec_info(void *data, int type, char *buf) 2194 { 2195 struct qedi_ctx *qedi = data; 2196 2197 return qedi_show_boot_tgt_info(qedi, type, buf, QEDI_NVM_TGT_SEC); 2198 } 2199 2200 static umode_t qedi_tgt_get_attr_visibility(void *data, int type) 2201 { 2202 int rc; 2203 2204 switch (type) { 2205 case ISCSI_BOOT_TGT_NAME: 2206 case ISCSI_BOOT_TGT_IP_ADDR: 2207 case ISCSI_BOOT_TGT_PORT: 2208 case ISCSI_BOOT_TGT_LUN: 2209 case ISCSI_BOOT_TGT_CHAP_NAME: 2210 case ISCSI_BOOT_TGT_CHAP_SECRET: 2211 case ISCSI_BOOT_TGT_REV_CHAP_NAME: 2212 case ISCSI_BOOT_TGT_REV_CHAP_SECRET: 2213 case ISCSI_BOOT_TGT_NIC_ASSOC: 2214 case ISCSI_BOOT_TGT_FLAGS: 2215 rc = 0444; 2216 break; 2217 default: 2218 rc = 0; 2219 break; 2220 } 2221 return rc; 2222 } 2223 2224 static void qedi_boot_release(void *data) 2225 { 2226 struct qedi_ctx *qedi = data; 2227 2228 scsi_host_put(qedi->shost); 2229 } 2230 2231 static int qedi_get_boot_info(struct qedi_ctx *qedi) 2232 { 2233 int ret = 1; 2234 2235 QEDI_INFO(&qedi->dbg_ctx, QEDI_LOG_INFO, 2236 "Get NVM iSCSI CFG image\n"); 2237 ret = qedi_ops->common->nvm_get_image(qedi->cdev, 2238 QED_NVM_IMAGE_ISCSI_CFG, 2239 (char *)qedi->iscsi_image, 2240 sizeof(struct qedi_nvm_iscsi_image)); 2241 if (ret) 2242 QEDI_ERR(&qedi->dbg_ctx, 2243 "Could not get NVM image. ret = %d\n", ret); 2244 2245 return ret; 2246 } 2247 2248 static int qedi_setup_boot_info(struct qedi_ctx *qedi) 2249 { 2250 struct iscsi_boot_kobj *boot_kobj; 2251 2252 if (qedi_get_boot_info(qedi)) 2253 return -EPERM; 2254 2255 qedi->boot_kset = iscsi_boot_create_host_kset(qedi->shost->host_no); 2256 if (!qedi->boot_kset) 2257 goto kset_free; 2258 2259 if (!scsi_host_get(qedi->shost)) 2260 goto kset_free; 2261 2262 boot_kobj = iscsi_boot_create_target(qedi->boot_kset, 0, qedi, 2263 qedi_show_boot_tgt_pri_info, 2264 qedi_tgt_get_attr_visibility, 2265 qedi_boot_release); 2266 if (!boot_kobj) 2267 goto put_host; 2268 2269 if (!scsi_host_get(qedi->shost)) 2270 goto kset_free; 2271 2272 boot_kobj = iscsi_boot_create_target(qedi->boot_kset, 1, qedi, 2273 qedi_show_boot_tgt_sec_info, 2274 qedi_tgt_get_attr_visibility, 2275 qedi_boot_release); 2276 if (!boot_kobj) 2277 goto put_host; 2278 2279 if (!scsi_host_get(qedi->shost)) 2280 goto kset_free; 2281 2282 boot_kobj = iscsi_boot_create_initiator(qedi->boot_kset, 0, qedi, 2283 qedi_show_boot_ini_info, 2284 qedi_ini_get_attr_visibility, 2285 qedi_boot_release); 2286 if (!boot_kobj) 2287 goto put_host; 2288 2289 if (!scsi_host_get(qedi->shost)) 2290 goto kset_free; 2291 2292 boot_kobj = iscsi_boot_create_ethernet(qedi->boot_kset, 0, qedi, 2293 qedi_show_boot_eth_info, 2294 qedi_eth_get_attr_visibility, 2295 qedi_boot_release); 2296 if (!boot_kobj) 2297 goto put_host; 2298 2299 return 0; 2300 2301 put_host: 2302 scsi_host_put(qedi->shost); 2303 kset_free: 2304 iscsi_boot_destroy_kset(qedi->boot_kset); 2305 return -ENOMEM; 2306 } 2307 2308 static void __qedi_remove(struct pci_dev *pdev, int mode) 2309 { 2310 struct qedi_ctx *qedi = pci_get_drvdata(pdev); 2311 int rval; 2312 2313 if (qedi->tmf_thread) { 2314 flush_workqueue(qedi->tmf_thread); 2315 destroy_workqueue(qedi->tmf_thread); 2316 qedi->tmf_thread = NULL; 2317 } 2318 2319 if (qedi->offload_thread) { 2320 flush_workqueue(qedi->offload_thread); 2321 destroy_workqueue(qedi->offload_thread); 2322 qedi->offload_thread = NULL; 2323 } 2324 2325 #ifdef CONFIG_DEBUG_FS 2326 qedi_dbg_host_exit(&qedi->dbg_ctx); 2327 #endif 2328 if (!test_bit(QEDI_IN_OFFLINE, &qedi->flags)) 2329 qedi_ops->common->set_power_state(qedi->cdev, PCI_D0); 2330 2331 qedi_sync_free_irqs(qedi); 2332 2333 if (!test_bit(QEDI_IN_OFFLINE, &qedi->flags)) { 2334 qedi_ops->stop(qedi->cdev); 2335 qedi_ops->ll2->stop(qedi->cdev); 2336 } 2337 2338 if (mode == QEDI_MODE_NORMAL) 2339 qedi_free_iscsi_pf_param(qedi); 2340 2341 rval = qedi_ops->common->update_drv_state(qedi->cdev, false); 2342 if (rval) 2343 QEDI_ERR(&qedi->dbg_ctx, "Failed to send drv state to MFW\n"); 2344 2345 if (!test_bit(QEDI_IN_OFFLINE, &qedi->flags)) { 2346 qedi_ops->common->slowpath_stop(qedi->cdev); 2347 qedi_ops->common->remove(qedi->cdev); 2348 } 2349 2350 qedi_destroy_fp(qedi); 2351 2352 if (mode == QEDI_MODE_NORMAL) { 2353 qedi_release_cid_que(qedi); 2354 qedi_cm_free_mem(qedi); 2355 qedi_free_uio(qedi->udev); 2356 qedi_free_itt(qedi); 2357 2358 iscsi_host_remove(qedi->shost); 2359 iscsi_host_free(qedi->shost); 2360 2361 if (qedi->ll2_recv_thread) { 2362 kthread_stop(qedi->ll2_recv_thread); 2363 qedi->ll2_recv_thread = NULL; 2364 } 2365 qedi_ll2_free_skbs(qedi); 2366 2367 if (qedi->boot_kset) 2368 iscsi_boot_destroy_kset(qedi->boot_kset); 2369 } 2370 } 2371 2372 static int __qedi_probe(struct pci_dev *pdev, int mode) 2373 { 2374 struct qedi_ctx *qedi; 2375 struct qed_ll2_params params; 2376 u32 dp_module = 0; 2377 u8 dp_level = 0; 2378 bool is_vf = false; 2379 char host_buf[16]; 2380 struct qed_link_params link_params; 2381 struct qed_slowpath_params sp_params; 2382 struct qed_probe_params qed_params; 2383 void *task_start, *task_end; 2384 int rc; 2385 u16 tmp; 2386 2387 if (mode != QEDI_MODE_RECOVERY) { 2388 qedi = qedi_host_alloc(pdev); 2389 if (!qedi) { 2390 rc = -ENOMEM; 2391 goto exit_probe; 2392 } 2393 } else { 2394 qedi = pci_get_drvdata(pdev); 2395 } 2396 2397 memset(&qed_params, 0, sizeof(qed_params)); 2398 qed_params.protocol = QED_PROTOCOL_ISCSI; 2399 qed_params.dp_module = dp_module; 2400 qed_params.dp_level = dp_level; 2401 qed_params.is_vf = is_vf; 2402 qedi->cdev = qedi_ops->common->probe(pdev, &qed_params); 2403 if (!qedi->cdev) { 2404 rc = -ENODEV; 2405 QEDI_ERR(&qedi->dbg_ctx, "Cannot initialize hardware\n"); 2406 goto free_host; 2407 } 2408 2409 atomic_set(&qedi->link_state, QEDI_LINK_DOWN); 2410 2411 rc = qedi_ops->fill_dev_info(qedi->cdev, &qedi->dev_info); 2412 if (rc) 2413 goto free_host; 2414 2415 if (mode != QEDI_MODE_RECOVERY) { 2416 rc = qedi_set_iscsi_pf_param(qedi); 2417 if (rc) { 2418 rc = -ENOMEM; 2419 QEDI_ERR(&qedi->dbg_ctx, 2420 "Set iSCSI pf param fail\n"); 2421 goto free_host; 2422 } 2423 } 2424 2425 qedi_ops->common->update_pf_params(qedi->cdev, &qedi->pf_params); 2426 2427 rc = qedi_prepare_fp(qedi); 2428 if (rc) { 2429 QEDI_ERR(&qedi->dbg_ctx, "Cannot start slowpath.\n"); 2430 goto free_pf_params; 2431 } 2432 2433 /* Start the Slowpath-process */ 2434 memset(&sp_params, 0, sizeof(struct qed_slowpath_params)); 2435 sp_params.int_mode = QED_INT_MODE_MSIX; 2436 sp_params.drv_major = QEDI_DRIVER_MAJOR_VER; 2437 sp_params.drv_minor = QEDI_DRIVER_MINOR_VER; 2438 sp_params.drv_rev = QEDI_DRIVER_REV_VER; 2439 sp_params.drv_eng = QEDI_DRIVER_ENG_VER; 2440 strlcpy(sp_params.name, "qedi iSCSI", QED_DRV_VER_STR_SIZE); 2441 rc = qedi_ops->common->slowpath_start(qedi->cdev, &sp_params); 2442 if (rc) { 2443 QEDI_ERR(&qedi->dbg_ctx, "Cannot start slowpath\n"); 2444 goto stop_hw; 2445 } 2446 2447 /* update_pf_params needs to be called before and after slowpath 2448 * start 2449 */ 2450 qedi_ops->common->update_pf_params(qedi->cdev, &qedi->pf_params); 2451 2452 rc = qedi_setup_int(qedi); 2453 if (rc) 2454 goto stop_iscsi_func; 2455 2456 qedi_ops->common->set_power_state(qedi->cdev, PCI_D0); 2457 2458 /* Learn information crucial for qedi to progress */ 2459 rc = qedi_ops->fill_dev_info(qedi->cdev, &qedi->dev_info); 2460 if (rc) 2461 goto stop_iscsi_func; 2462 2463 /* Record BDQ producer doorbell addresses */ 2464 qedi->bdq_primary_prod = qedi->dev_info.primary_dbq_rq_addr; 2465 qedi->bdq_secondary_prod = qedi->dev_info.secondary_bdq_rq_addr; 2466 QEDI_INFO(&qedi->dbg_ctx, QEDI_LOG_DISC, 2467 "BDQ primary_prod=%p secondary_prod=%p.\n", 2468 qedi->bdq_primary_prod, 2469 qedi->bdq_secondary_prod); 2470 2471 /* 2472 * We need to write the number of BDs in the BDQ we've preallocated so 2473 * the f/w will do a prefetch and we'll get an unsolicited CQE when a 2474 * packet arrives. 2475 */ 2476 qedi->bdq_prod_idx = QEDI_BDQ_NUM; 2477 QEDI_INFO(&qedi->dbg_ctx, QEDI_LOG_DISC, 2478 "Writing %d to primary and secondary BDQ doorbell registers.\n", 2479 qedi->bdq_prod_idx); 2480 writew(qedi->bdq_prod_idx, qedi->bdq_primary_prod); 2481 tmp = readw(qedi->bdq_primary_prod); 2482 writew(qedi->bdq_prod_idx, qedi->bdq_secondary_prod); 2483 tmp = readw(qedi->bdq_secondary_prod); 2484 2485 ether_addr_copy(qedi->mac, qedi->dev_info.common.hw_mac); 2486 QEDI_INFO(&qedi->dbg_ctx, QEDI_LOG_DISC, "MAC address is %pM.\n", 2487 qedi->mac); 2488 2489 sprintf(host_buf, "host_%d", qedi->shost->host_no); 2490 qedi_ops->common->set_name(qedi->cdev, host_buf); 2491 2492 qedi_ops->register_ops(qedi->cdev, &qedi_cb_ops, qedi); 2493 2494 memset(¶ms, 0, sizeof(params)); 2495 params.mtu = DEF_PATH_MTU + IPV6_HDR_LEN + TCP_HDR_LEN; 2496 qedi->ll2_mtu = DEF_PATH_MTU; 2497 params.drop_ttl0_packets = 0; 2498 params.rx_vlan_stripping = 1; 2499 ether_addr_copy(params.ll2_mac_address, qedi->dev_info.common.hw_mac); 2500 2501 if (mode != QEDI_MODE_RECOVERY) { 2502 /* set up rx path */ 2503 INIT_LIST_HEAD(&qedi->ll2_skb_list); 2504 spin_lock_init(&qedi->ll2_lock); 2505 /* start qedi context */ 2506 spin_lock_init(&qedi->hba_lock); 2507 spin_lock_init(&qedi->task_idx_lock); 2508 mutex_init(&qedi->stats_lock); 2509 } 2510 qedi_ops->ll2->register_cb_ops(qedi->cdev, &qedi_ll2_cb_ops, qedi); 2511 qedi_ops->ll2->start(qedi->cdev, ¶ms); 2512 2513 if (mode != QEDI_MODE_RECOVERY) { 2514 qedi->ll2_recv_thread = kthread_run(qedi_ll2_recv_thread, 2515 (void *)qedi, 2516 "qedi_ll2_thread"); 2517 } 2518 2519 rc = qedi_ops->start(qedi->cdev, &qedi->tasks, 2520 qedi, qedi_iscsi_event_cb); 2521 if (rc) { 2522 rc = -ENODEV; 2523 QEDI_ERR(&qedi->dbg_ctx, "Cannot start iSCSI function\n"); 2524 goto stop_slowpath; 2525 } 2526 2527 task_start = qedi_get_task_mem(&qedi->tasks, 0); 2528 task_end = qedi_get_task_mem(&qedi->tasks, MAX_TID_BLOCKS_ISCSI - 1); 2529 QEDI_INFO(&qedi->dbg_ctx, QEDI_LOG_DISC, 2530 "Task context start=%p, end=%p block_size=%u.\n", 2531 task_start, task_end, qedi->tasks.size); 2532 2533 memset(&link_params, 0, sizeof(link_params)); 2534 link_params.link_up = true; 2535 rc = qedi_ops->common->set_link(qedi->cdev, &link_params); 2536 if (rc) { 2537 QEDI_WARN(&qedi->dbg_ctx, "Link set up failed.\n"); 2538 atomic_set(&qedi->link_state, QEDI_LINK_DOWN); 2539 } 2540 2541 #ifdef CONFIG_DEBUG_FS 2542 qedi_dbg_host_init(&qedi->dbg_ctx, qedi_debugfs_ops, 2543 qedi_dbg_fops); 2544 #endif 2545 QEDI_INFO(&qedi->dbg_ctx, QEDI_LOG_INFO, 2546 "QLogic FastLinQ iSCSI Module qedi %s, FW %d.%d.%d.%d\n", 2547 QEDI_MODULE_VERSION, FW_MAJOR_VERSION, FW_MINOR_VERSION, 2548 FW_REVISION_VERSION, FW_ENGINEERING_VERSION); 2549 2550 if (mode == QEDI_MODE_NORMAL) { 2551 if (iscsi_host_add(qedi->shost, &pdev->dev)) { 2552 QEDI_ERR(&qedi->dbg_ctx, 2553 "Could not add iscsi host\n"); 2554 rc = -ENOMEM; 2555 goto remove_host; 2556 } 2557 2558 /* Allocate uio buffers */ 2559 rc = qedi_alloc_uio_rings(qedi); 2560 if (rc) { 2561 QEDI_ERR(&qedi->dbg_ctx, 2562 "UIO alloc ring failed err=%d\n", rc); 2563 goto remove_host; 2564 } 2565 2566 rc = qedi_init_uio(qedi); 2567 if (rc) { 2568 QEDI_ERR(&qedi->dbg_ctx, 2569 "UIO init failed, err=%d\n", rc); 2570 goto free_uio; 2571 } 2572 2573 /* host the array on iscsi_conn */ 2574 rc = qedi_setup_cid_que(qedi); 2575 if (rc) { 2576 QEDI_ERR(&qedi->dbg_ctx, 2577 "Could not setup cid que\n"); 2578 goto free_uio; 2579 } 2580 2581 rc = qedi_cm_alloc_mem(qedi); 2582 if (rc) { 2583 QEDI_ERR(&qedi->dbg_ctx, 2584 "Could not alloc cm memory\n"); 2585 goto free_cid_que; 2586 } 2587 2588 rc = qedi_alloc_itt(qedi); 2589 if (rc) { 2590 QEDI_ERR(&qedi->dbg_ctx, 2591 "Could not alloc itt memory\n"); 2592 goto free_cid_que; 2593 } 2594 2595 sprintf(host_buf, "host_%d", qedi->shost->host_no); 2596 qedi->tmf_thread = create_singlethread_workqueue(host_buf); 2597 if (!qedi->tmf_thread) { 2598 QEDI_ERR(&qedi->dbg_ctx, 2599 "Unable to start tmf thread!\n"); 2600 rc = -ENODEV; 2601 goto free_cid_que; 2602 } 2603 2604 sprintf(host_buf, "qedi_ofld%d", qedi->shost->host_no); 2605 qedi->offload_thread = create_workqueue(host_buf); 2606 if (!qedi->offload_thread) { 2607 QEDI_ERR(&qedi->dbg_ctx, 2608 "Unable to start offload thread!\n"); 2609 rc = -ENODEV; 2610 goto free_cid_que; 2611 } 2612 2613 /* F/w needs 1st task context memory entry for performance */ 2614 set_bit(QEDI_RESERVE_TASK_ID, qedi->task_idx_map); 2615 atomic_set(&qedi->num_offloads, 0); 2616 2617 if (qedi_setup_boot_info(qedi)) 2618 QEDI_ERR(&qedi->dbg_ctx, 2619 "No iSCSI boot target configured\n"); 2620 2621 rc = qedi_ops->common->update_drv_state(qedi->cdev, true); 2622 if (rc) 2623 QEDI_ERR(&qedi->dbg_ctx, 2624 "Failed to send drv state to MFW\n"); 2625 2626 } 2627 2628 return 0; 2629 2630 free_cid_que: 2631 qedi_release_cid_que(qedi); 2632 free_uio: 2633 qedi_free_uio(qedi->udev); 2634 remove_host: 2635 #ifdef CONFIG_DEBUG_FS 2636 qedi_dbg_host_exit(&qedi->dbg_ctx); 2637 #endif 2638 iscsi_host_remove(qedi->shost); 2639 stop_iscsi_func: 2640 qedi_ops->stop(qedi->cdev); 2641 stop_slowpath: 2642 qedi_ops->common->slowpath_stop(qedi->cdev); 2643 stop_hw: 2644 qedi_ops->common->remove(qedi->cdev); 2645 free_pf_params: 2646 qedi_free_iscsi_pf_param(qedi); 2647 free_host: 2648 iscsi_host_free(qedi->shost); 2649 exit_probe: 2650 return rc; 2651 } 2652 2653 static int qedi_probe(struct pci_dev *pdev, const struct pci_device_id *id) 2654 { 2655 return __qedi_probe(pdev, QEDI_MODE_NORMAL); 2656 } 2657 2658 static void qedi_remove(struct pci_dev *pdev) 2659 { 2660 __qedi_remove(pdev, QEDI_MODE_NORMAL); 2661 } 2662 2663 static struct pci_device_id qedi_pci_tbl[] = { 2664 { PCI_DEVICE(PCI_VENDOR_ID_QLOGIC, 0x165E) }, 2665 { PCI_DEVICE(PCI_VENDOR_ID_QLOGIC, 0x8084) }, 2666 { 0 }, 2667 }; 2668 MODULE_DEVICE_TABLE(pci, qedi_pci_tbl); 2669 2670 static enum cpuhp_state qedi_cpuhp_state; 2671 2672 static struct pci_driver qedi_pci_driver = { 2673 .name = QEDI_MODULE_NAME, 2674 .id_table = qedi_pci_tbl, 2675 .probe = qedi_probe, 2676 .remove = qedi_remove, 2677 }; 2678 2679 static int __init qedi_init(void) 2680 { 2681 struct qedi_percpu_s *p; 2682 int cpu, rc = 0; 2683 2684 qedi_ops = qed_get_iscsi_ops(); 2685 if (!qedi_ops) { 2686 QEDI_ERR(NULL, "Failed to get qed iSCSI operations\n"); 2687 return -EINVAL; 2688 } 2689 2690 #ifdef CONFIG_DEBUG_FS 2691 qedi_dbg_init("qedi"); 2692 #endif 2693 2694 qedi_scsi_transport = iscsi_register_transport(&qedi_iscsi_transport); 2695 if (!qedi_scsi_transport) { 2696 QEDI_ERR(NULL, "Could not register qedi transport"); 2697 rc = -ENOMEM; 2698 goto exit_qedi_init_1; 2699 } 2700 2701 for_each_possible_cpu(cpu) { 2702 p = &per_cpu(qedi_percpu, cpu); 2703 INIT_LIST_HEAD(&p->work_list); 2704 spin_lock_init(&p->p_work_lock); 2705 p->iothread = NULL; 2706 } 2707 2708 rc = cpuhp_setup_state(CPUHP_AP_ONLINE_DYN, "scsi/qedi:online", 2709 qedi_cpu_online, qedi_cpu_offline); 2710 if (rc < 0) 2711 goto exit_qedi_init_2; 2712 qedi_cpuhp_state = rc; 2713 2714 rc = pci_register_driver(&qedi_pci_driver); 2715 if (rc) { 2716 QEDI_ERR(NULL, "Failed to register driver\n"); 2717 goto exit_qedi_hp; 2718 } 2719 2720 return 0; 2721 2722 exit_qedi_hp: 2723 cpuhp_remove_state(qedi_cpuhp_state); 2724 exit_qedi_init_2: 2725 iscsi_unregister_transport(&qedi_iscsi_transport); 2726 exit_qedi_init_1: 2727 #ifdef CONFIG_DEBUG_FS 2728 qedi_dbg_exit(); 2729 #endif 2730 qed_put_iscsi_ops(); 2731 return rc; 2732 } 2733 2734 static void __exit qedi_cleanup(void) 2735 { 2736 pci_unregister_driver(&qedi_pci_driver); 2737 cpuhp_remove_state(qedi_cpuhp_state); 2738 iscsi_unregister_transport(&qedi_iscsi_transport); 2739 2740 #ifdef CONFIG_DEBUG_FS 2741 qedi_dbg_exit(); 2742 #endif 2743 qed_put_iscsi_ops(); 2744 } 2745 2746 MODULE_DESCRIPTION("QLogic FastLinQ 4xxxx iSCSI Module"); 2747 MODULE_LICENSE("GPL"); 2748 MODULE_AUTHOR("QLogic Corporation"); 2749 MODULE_VERSION(QEDI_MODULE_VERSION); 2750 module_init(qedi_init); 2751 module_exit(qedi_cleanup); 2752