1 /* 2 * QLogic iSCSI Offload Driver 3 * Copyright (c) 2016 Cavium Inc. 4 * 5 * This software is available under the terms of the GNU General Public License 6 * (GPL) Version 2, available from the file COPYING in the main directory of 7 * this source tree. 8 */ 9 10 #include <linux/module.h> 11 #include <linux/pci.h> 12 #include <linux/kernel.h> 13 #include <linux/if_arp.h> 14 #include <scsi/iscsi_if.h> 15 #include <linux/inet.h> 16 #include <net/arp.h> 17 #include <linux/list.h> 18 #include <linux/kthread.h> 19 #include <linux/mm.h> 20 #include <linux/if_vlan.h> 21 #include <linux/cpu.h> 22 #include <linux/iscsi_boot_sysfs.h> 23 24 #include <scsi/scsi_cmnd.h> 25 #include <scsi/scsi_device.h> 26 #include <scsi/scsi_eh.h> 27 #include <scsi/scsi_host.h> 28 #include <scsi/scsi.h> 29 30 #include "qedi.h" 31 #include "qedi_gbl.h" 32 #include "qedi_iscsi.h" 33 34 static uint qedi_fw_debug; 35 module_param(qedi_fw_debug, uint, 0644); 36 MODULE_PARM_DESC(qedi_fw_debug, " Firmware debug level 0(default) to 3"); 37 38 uint qedi_dbg_log = QEDI_LOG_WARN | QEDI_LOG_SCSI_TM; 39 module_param(qedi_dbg_log, uint, 0644); 40 MODULE_PARM_DESC(qedi_dbg_log, " Default debug level"); 41 42 uint qedi_io_tracing; 43 module_param(qedi_io_tracing, uint, 0644); 44 MODULE_PARM_DESC(qedi_io_tracing, 45 " Enable logging of SCSI requests/completions into trace buffer. (default off)."); 46 47 uint qedi_ll2_buf_size = 0x400; 48 module_param(qedi_ll2_buf_size, uint, 0644); 49 MODULE_PARM_DESC(qedi_ll2_buf_size, 50 "parameter to set ping packet size, default - 0x400, Jumbo packets - 0x2400."); 51 52 const struct qed_iscsi_ops *qedi_ops; 53 static struct scsi_transport_template *qedi_scsi_transport; 54 static struct pci_driver qedi_pci_driver; 55 static DEFINE_PER_CPU(struct qedi_percpu_s, qedi_percpu); 56 static LIST_HEAD(qedi_udev_list); 57 /* Static function declaration */ 58 static int qedi_alloc_global_queues(struct qedi_ctx *qedi); 59 static void qedi_free_global_queues(struct qedi_ctx *qedi); 60 static struct qedi_cmd *qedi_get_cmd_from_tid(struct qedi_ctx *qedi, u32 tid); 61 static void qedi_reset_uio_rings(struct qedi_uio_dev *udev); 62 static void qedi_ll2_free_skbs(struct qedi_ctx *qedi); 63 static struct nvm_iscsi_block *qedi_get_nvram_block(struct qedi_ctx *qedi); 64 65 static int qedi_iscsi_event_cb(void *context, u8 fw_event_code, void *fw_handle) 66 { 67 struct qedi_ctx *qedi; 68 struct qedi_endpoint *qedi_ep; 69 struct iscsi_eqe_data *data; 70 int rval = 0; 71 72 if (!context || !fw_handle) { 73 QEDI_ERR(NULL, "Recv event with ctx NULL\n"); 74 return -EINVAL; 75 } 76 77 qedi = (struct qedi_ctx *)context; 78 QEDI_INFO(&qedi->dbg_ctx, QEDI_LOG_INFO, 79 "Recv Event %d fw_handle %p\n", fw_event_code, fw_handle); 80 81 data = (struct iscsi_eqe_data *)fw_handle; 82 QEDI_INFO(&qedi->dbg_ctx, QEDI_LOG_INFO, 83 "icid=0x%x conn_id=0x%x err-code=0x%x error-pdu-opcode-reserved=0x%x\n", 84 data->icid, data->conn_id, data->error_code, 85 data->error_pdu_opcode_reserved); 86 87 qedi_ep = qedi->ep_tbl[data->icid]; 88 89 if (!qedi_ep) { 90 QEDI_WARN(&qedi->dbg_ctx, 91 "Cannot process event, ep already disconnected, cid=0x%x\n", 92 data->icid); 93 WARN_ON(1); 94 return -ENODEV; 95 } 96 97 switch (fw_event_code) { 98 case ISCSI_EVENT_TYPE_ASYN_CONNECT_COMPLETE: 99 if (qedi_ep->state == EP_STATE_OFLDCONN_START) 100 qedi_ep->state = EP_STATE_OFLDCONN_COMPL; 101 102 wake_up_interruptible(&qedi_ep->tcp_ofld_wait); 103 break; 104 case ISCSI_EVENT_TYPE_ASYN_TERMINATE_DONE: 105 qedi_ep->state = EP_STATE_DISCONN_COMPL; 106 wake_up_interruptible(&qedi_ep->tcp_ofld_wait); 107 break; 108 case ISCSI_EVENT_TYPE_ISCSI_CONN_ERROR: 109 qedi_process_iscsi_error(qedi_ep, data); 110 break; 111 case ISCSI_EVENT_TYPE_ASYN_ABORT_RCVD: 112 case ISCSI_EVENT_TYPE_ASYN_SYN_RCVD: 113 case ISCSI_EVENT_TYPE_ASYN_MAX_RT_TIME: 114 case ISCSI_EVENT_TYPE_ASYN_MAX_RT_CNT: 115 case ISCSI_EVENT_TYPE_ASYN_MAX_KA_PROBES_CNT: 116 case ISCSI_EVENT_TYPE_ASYN_FIN_WAIT2: 117 case ISCSI_EVENT_TYPE_TCP_CONN_ERROR: 118 qedi_process_tcp_error(qedi_ep, data); 119 break; 120 default: 121 QEDI_ERR(&qedi->dbg_ctx, "Recv Unknown Event %u\n", 122 fw_event_code); 123 } 124 125 return rval; 126 } 127 128 static int qedi_uio_open(struct uio_info *uinfo, struct inode *inode) 129 { 130 struct qedi_uio_dev *udev = uinfo->priv; 131 struct qedi_ctx *qedi = udev->qedi; 132 133 if (!capable(CAP_NET_ADMIN)) 134 return -EPERM; 135 136 if (udev->uio_dev != -1) 137 return -EBUSY; 138 139 rtnl_lock(); 140 udev->uio_dev = iminor(inode); 141 qedi_reset_uio_rings(udev); 142 set_bit(UIO_DEV_OPENED, &qedi->flags); 143 rtnl_unlock(); 144 145 return 0; 146 } 147 148 static int qedi_uio_close(struct uio_info *uinfo, struct inode *inode) 149 { 150 struct qedi_uio_dev *udev = uinfo->priv; 151 struct qedi_ctx *qedi = udev->qedi; 152 153 udev->uio_dev = -1; 154 clear_bit(UIO_DEV_OPENED, &qedi->flags); 155 qedi_ll2_free_skbs(qedi); 156 return 0; 157 } 158 159 static void __qedi_free_uio_rings(struct qedi_uio_dev *udev) 160 { 161 if (udev->uctrl) { 162 free_page((unsigned long)udev->uctrl); 163 udev->uctrl = NULL; 164 } 165 166 if (udev->ll2_ring) { 167 free_page((unsigned long)udev->ll2_ring); 168 udev->ll2_ring = NULL; 169 } 170 171 if (udev->ll2_buf) { 172 free_pages((unsigned long)udev->ll2_buf, 2); 173 udev->ll2_buf = NULL; 174 } 175 } 176 177 static void __qedi_free_uio(struct qedi_uio_dev *udev) 178 { 179 uio_unregister_device(&udev->qedi_uinfo); 180 181 __qedi_free_uio_rings(udev); 182 183 pci_dev_put(udev->pdev); 184 kfree(udev); 185 } 186 187 static void qedi_free_uio(struct qedi_uio_dev *udev) 188 { 189 if (!udev) 190 return; 191 192 list_del_init(&udev->list); 193 __qedi_free_uio(udev); 194 } 195 196 static void qedi_reset_uio_rings(struct qedi_uio_dev *udev) 197 { 198 struct qedi_ctx *qedi = NULL; 199 struct qedi_uio_ctrl *uctrl = NULL; 200 201 qedi = udev->qedi; 202 uctrl = udev->uctrl; 203 204 spin_lock_bh(&qedi->ll2_lock); 205 uctrl->host_rx_cons = 0; 206 uctrl->hw_rx_prod = 0; 207 uctrl->hw_rx_bd_prod = 0; 208 uctrl->host_rx_bd_cons = 0; 209 210 memset(udev->ll2_ring, 0, udev->ll2_ring_size); 211 memset(udev->ll2_buf, 0, udev->ll2_buf_size); 212 spin_unlock_bh(&qedi->ll2_lock); 213 } 214 215 static int __qedi_alloc_uio_rings(struct qedi_uio_dev *udev) 216 { 217 int rc = 0; 218 219 if (udev->ll2_ring || udev->ll2_buf) 220 return rc; 221 222 /* Memory for control area. */ 223 udev->uctrl = (void *)get_zeroed_page(GFP_KERNEL); 224 if (!udev->uctrl) 225 return -ENOMEM; 226 227 /* Allocating memory for LL2 ring */ 228 udev->ll2_ring_size = QEDI_PAGE_SIZE; 229 udev->ll2_ring = (void *)get_zeroed_page(GFP_KERNEL | __GFP_COMP); 230 if (!udev->ll2_ring) { 231 rc = -ENOMEM; 232 goto exit_alloc_ring; 233 } 234 235 /* Allocating memory for Tx/Rx pkt buffer */ 236 udev->ll2_buf_size = TX_RX_RING * qedi_ll2_buf_size; 237 udev->ll2_buf_size = QEDI_PAGE_ALIGN(udev->ll2_buf_size); 238 udev->ll2_buf = (void *)__get_free_pages(GFP_KERNEL | __GFP_COMP | 239 __GFP_ZERO, 2); 240 if (!udev->ll2_buf) { 241 rc = -ENOMEM; 242 goto exit_alloc_buf; 243 } 244 return rc; 245 246 exit_alloc_buf: 247 free_page((unsigned long)udev->ll2_ring); 248 udev->ll2_ring = NULL; 249 exit_alloc_ring: 250 return rc; 251 } 252 253 static int qedi_alloc_uio_rings(struct qedi_ctx *qedi) 254 { 255 struct qedi_uio_dev *udev = NULL; 256 int rc = 0; 257 258 list_for_each_entry(udev, &qedi_udev_list, list) { 259 if (udev->pdev == qedi->pdev) { 260 udev->qedi = qedi; 261 if (__qedi_alloc_uio_rings(udev)) { 262 udev->qedi = NULL; 263 return -ENOMEM; 264 } 265 qedi->udev = udev; 266 return 0; 267 } 268 } 269 270 udev = kzalloc(sizeof(*udev), GFP_KERNEL); 271 if (!udev) { 272 rc = -ENOMEM; 273 goto err_udev; 274 } 275 276 udev->uio_dev = -1; 277 278 udev->qedi = qedi; 279 udev->pdev = qedi->pdev; 280 281 rc = __qedi_alloc_uio_rings(udev); 282 if (rc) 283 goto err_uctrl; 284 285 list_add(&udev->list, &qedi_udev_list); 286 287 pci_dev_get(udev->pdev); 288 qedi->udev = udev; 289 290 udev->tx_pkt = udev->ll2_buf; 291 udev->rx_pkt = udev->ll2_buf + qedi_ll2_buf_size; 292 return 0; 293 294 err_uctrl: 295 kfree(udev); 296 err_udev: 297 return -ENOMEM; 298 } 299 300 static int qedi_init_uio(struct qedi_ctx *qedi) 301 { 302 struct qedi_uio_dev *udev = qedi->udev; 303 struct uio_info *uinfo; 304 int ret = 0; 305 306 if (!udev) 307 return -ENOMEM; 308 309 uinfo = &udev->qedi_uinfo; 310 311 uinfo->mem[0].addr = (unsigned long)udev->uctrl; 312 uinfo->mem[0].size = sizeof(struct qedi_uio_ctrl); 313 uinfo->mem[0].memtype = UIO_MEM_LOGICAL; 314 315 uinfo->mem[1].addr = (unsigned long)udev->ll2_ring; 316 uinfo->mem[1].size = udev->ll2_ring_size; 317 uinfo->mem[1].memtype = UIO_MEM_LOGICAL; 318 319 uinfo->mem[2].addr = (unsigned long)udev->ll2_buf; 320 uinfo->mem[2].size = udev->ll2_buf_size; 321 uinfo->mem[2].memtype = UIO_MEM_LOGICAL; 322 323 uinfo->name = "qedi_uio"; 324 uinfo->version = QEDI_MODULE_VERSION; 325 uinfo->irq = UIO_IRQ_CUSTOM; 326 327 uinfo->open = qedi_uio_open; 328 uinfo->release = qedi_uio_close; 329 330 if (udev->uio_dev == -1) { 331 if (!uinfo->priv) { 332 uinfo->priv = udev; 333 334 ret = uio_register_device(&udev->pdev->dev, uinfo); 335 if (ret) { 336 QEDI_ERR(&qedi->dbg_ctx, 337 "UIO registration failed\n"); 338 } 339 } 340 } 341 342 return ret; 343 } 344 345 static int qedi_alloc_and_init_sb(struct qedi_ctx *qedi, 346 struct qed_sb_info *sb_info, u16 sb_id) 347 { 348 struct status_block_e4 *sb_virt; 349 dma_addr_t sb_phys; 350 int ret; 351 352 sb_virt = dma_alloc_coherent(&qedi->pdev->dev, 353 sizeof(struct status_block_e4), &sb_phys, 354 GFP_KERNEL); 355 if (!sb_virt) { 356 QEDI_ERR(&qedi->dbg_ctx, 357 "Status block allocation failed for id = %d.\n", 358 sb_id); 359 return -ENOMEM; 360 } 361 362 ret = qedi_ops->common->sb_init(qedi->cdev, sb_info, sb_virt, sb_phys, 363 sb_id, QED_SB_TYPE_STORAGE); 364 if (ret) { 365 QEDI_ERR(&qedi->dbg_ctx, 366 "Status block initialization failed for id = %d.\n", 367 sb_id); 368 return ret; 369 } 370 371 return 0; 372 } 373 374 static void qedi_free_sb(struct qedi_ctx *qedi) 375 { 376 struct qed_sb_info *sb_info; 377 int id; 378 379 for (id = 0; id < MIN_NUM_CPUS_MSIX(qedi); id++) { 380 sb_info = &qedi->sb_array[id]; 381 if (sb_info->sb_virt) 382 dma_free_coherent(&qedi->pdev->dev, 383 sizeof(*sb_info->sb_virt), 384 (void *)sb_info->sb_virt, 385 sb_info->sb_phys); 386 } 387 } 388 389 static void qedi_free_fp(struct qedi_ctx *qedi) 390 { 391 kfree(qedi->fp_array); 392 kfree(qedi->sb_array); 393 } 394 395 static void qedi_destroy_fp(struct qedi_ctx *qedi) 396 { 397 qedi_free_sb(qedi); 398 qedi_free_fp(qedi); 399 } 400 401 static int qedi_alloc_fp(struct qedi_ctx *qedi) 402 { 403 int ret = 0; 404 405 qedi->fp_array = kcalloc(MIN_NUM_CPUS_MSIX(qedi), 406 sizeof(struct qedi_fastpath), GFP_KERNEL); 407 if (!qedi->fp_array) { 408 QEDI_ERR(&qedi->dbg_ctx, 409 "fastpath fp array allocation failed.\n"); 410 return -ENOMEM; 411 } 412 413 qedi->sb_array = kcalloc(MIN_NUM_CPUS_MSIX(qedi), 414 sizeof(struct qed_sb_info), GFP_KERNEL); 415 if (!qedi->sb_array) { 416 QEDI_ERR(&qedi->dbg_ctx, 417 "fastpath sb array allocation failed.\n"); 418 ret = -ENOMEM; 419 goto free_fp; 420 } 421 422 return ret; 423 424 free_fp: 425 qedi_free_fp(qedi); 426 return ret; 427 } 428 429 static void qedi_int_fp(struct qedi_ctx *qedi) 430 { 431 struct qedi_fastpath *fp; 432 int id; 433 434 memset(qedi->fp_array, 0, MIN_NUM_CPUS_MSIX(qedi) * 435 sizeof(*qedi->fp_array)); 436 memset(qedi->sb_array, 0, MIN_NUM_CPUS_MSIX(qedi) * 437 sizeof(*qedi->sb_array)); 438 439 for (id = 0; id < MIN_NUM_CPUS_MSIX(qedi); id++) { 440 fp = &qedi->fp_array[id]; 441 fp->sb_info = &qedi->sb_array[id]; 442 fp->sb_id = id; 443 fp->qedi = qedi; 444 snprintf(fp->name, sizeof(fp->name), "%s-fp-%d", 445 "qedi", id); 446 447 /* fp_array[i] ---- irq cookie 448 * So init data which is needed in int ctx 449 */ 450 } 451 } 452 453 static int qedi_prepare_fp(struct qedi_ctx *qedi) 454 { 455 struct qedi_fastpath *fp; 456 int id, ret = 0; 457 458 ret = qedi_alloc_fp(qedi); 459 if (ret) 460 goto err; 461 462 qedi_int_fp(qedi); 463 464 for (id = 0; id < MIN_NUM_CPUS_MSIX(qedi); id++) { 465 fp = &qedi->fp_array[id]; 466 ret = qedi_alloc_and_init_sb(qedi, fp->sb_info, fp->sb_id); 467 if (ret) { 468 QEDI_ERR(&qedi->dbg_ctx, 469 "SB allocation and initialization failed.\n"); 470 ret = -EIO; 471 goto err_init; 472 } 473 } 474 475 return 0; 476 477 err_init: 478 qedi_free_sb(qedi); 479 qedi_free_fp(qedi); 480 err: 481 return ret; 482 } 483 484 static int qedi_setup_cid_que(struct qedi_ctx *qedi) 485 { 486 int i; 487 488 qedi->cid_que.cid_que_base = kmalloc_array(qedi->max_active_conns, 489 sizeof(u32), GFP_KERNEL); 490 if (!qedi->cid_que.cid_que_base) 491 return -ENOMEM; 492 493 qedi->cid_que.conn_cid_tbl = kmalloc_array(qedi->max_active_conns, 494 sizeof(struct qedi_conn *), 495 GFP_KERNEL); 496 if (!qedi->cid_que.conn_cid_tbl) { 497 kfree(qedi->cid_que.cid_que_base); 498 qedi->cid_que.cid_que_base = NULL; 499 return -ENOMEM; 500 } 501 502 qedi->cid_que.cid_que = (u32 *)qedi->cid_que.cid_que_base; 503 qedi->cid_que.cid_q_prod_idx = 0; 504 qedi->cid_que.cid_q_cons_idx = 0; 505 qedi->cid_que.cid_q_max_idx = qedi->max_active_conns; 506 qedi->cid_que.cid_free_cnt = qedi->max_active_conns; 507 508 for (i = 0; i < qedi->max_active_conns; i++) { 509 qedi->cid_que.cid_que[i] = i; 510 qedi->cid_que.conn_cid_tbl[i] = NULL; 511 } 512 513 return 0; 514 } 515 516 static void qedi_release_cid_que(struct qedi_ctx *qedi) 517 { 518 kfree(qedi->cid_que.cid_que_base); 519 qedi->cid_que.cid_que_base = NULL; 520 521 kfree(qedi->cid_que.conn_cid_tbl); 522 qedi->cid_que.conn_cid_tbl = NULL; 523 } 524 525 static int qedi_init_id_tbl(struct qedi_portid_tbl *id_tbl, u16 size, 526 u16 start_id, u16 next) 527 { 528 id_tbl->start = start_id; 529 id_tbl->max = size; 530 id_tbl->next = next; 531 spin_lock_init(&id_tbl->lock); 532 id_tbl->table = kcalloc(BITS_TO_LONGS(size), sizeof(long), GFP_KERNEL); 533 if (!id_tbl->table) 534 return -ENOMEM; 535 536 return 0; 537 } 538 539 static void qedi_free_id_tbl(struct qedi_portid_tbl *id_tbl) 540 { 541 kfree(id_tbl->table); 542 id_tbl->table = NULL; 543 } 544 545 int qedi_alloc_id(struct qedi_portid_tbl *id_tbl, u16 id) 546 { 547 int ret = -1; 548 549 id -= id_tbl->start; 550 if (id >= id_tbl->max) 551 return ret; 552 553 spin_lock(&id_tbl->lock); 554 if (!test_bit(id, id_tbl->table)) { 555 set_bit(id, id_tbl->table); 556 ret = 0; 557 } 558 spin_unlock(&id_tbl->lock); 559 return ret; 560 } 561 562 u16 qedi_alloc_new_id(struct qedi_portid_tbl *id_tbl) 563 { 564 u16 id; 565 566 spin_lock(&id_tbl->lock); 567 id = find_next_zero_bit(id_tbl->table, id_tbl->max, id_tbl->next); 568 if (id >= id_tbl->max) { 569 id = QEDI_LOCAL_PORT_INVALID; 570 if (id_tbl->next != 0) { 571 id = find_first_zero_bit(id_tbl->table, id_tbl->next); 572 if (id >= id_tbl->next) 573 id = QEDI_LOCAL_PORT_INVALID; 574 } 575 } 576 577 if (id < id_tbl->max) { 578 set_bit(id, id_tbl->table); 579 id_tbl->next = (id + 1) & (id_tbl->max - 1); 580 id += id_tbl->start; 581 } 582 583 spin_unlock(&id_tbl->lock); 584 585 return id; 586 } 587 588 void qedi_free_id(struct qedi_portid_tbl *id_tbl, u16 id) 589 { 590 if (id == QEDI_LOCAL_PORT_INVALID) 591 return; 592 593 id -= id_tbl->start; 594 if (id >= id_tbl->max) 595 return; 596 597 clear_bit(id, id_tbl->table); 598 } 599 600 static void qedi_cm_free_mem(struct qedi_ctx *qedi) 601 { 602 kfree(qedi->ep_tbl); 603 qedi->ep_tbl = NULL; 604 qedi_free_id_tbl(&qedi->lcl_port_tbl); 605 } 606 607 static int qedi_cm_alloc_mem(struct qedi_ctx *qedi) 608 { 609 u16 port_id; 610 611 qedi->ep_tbl = kzalloc((qedi->max_active_conns * 612 sizeof(struct qedi_endpoint *)), GFP_KERNEL); 613 if (!qedi->ep_tbl) 614 return -ENOMEM; 615 port_id = prandom_u32() % QEDI_LOCAL_PORT_RANGE; 616 if (qedi_init_id_tbl(&qedi->lcl_port_tbl, QEDI_LOCAL_PORT_RANGE, 617 QEDI_LOCAL_PORT_MIN, port_id)) { 618 qedi_cm_free_mem(qedi); 619 return -ENOMEM; 620 } 621 622 return 0; 623 } 624 625 static struct qedi_ctx *qedi_host_alloc(struct pci_dev *pdev) 626 { 627 struct Scsi_Host *shost; 628 struct qedi_ctx *qedi = NULL; 629 630 shost = iscsi_host_alloc(&qedi_host_template, 631 sizeof(struct qedi_ctx), 0); 632 if (!shost) { 633 QEDI_ERR(NULL, "Could not allocate shost\n"); 634 goto exit_setup_shost; 635 } 636 637 shost->max_id = QEDI_MAX_ISCSI_CONNS_PER_HBA; 638 shost->max_channel = 0; 639 shost->max_lun = ~0; 640 shost->max_cmd_len = 16; 641 shost->transportt = qedi_scsi_transport; 642 643 qedi = iscsi_host_priv(shost); 644 memset(qedi, 0, sizeof(*qedi)); 645 qedi->shost = shost; 646 qedi->dbg_ctx.host_no = shost->host_no; 647 qedi->pdev = pdev; 648 qedi->dbg_ctx.pdev = pdev; 649 qedi->max_active_conns = ISCSI_MAX_SESS_PER_HBA; 650 qedi->max_sqes = QEDI_SQ_SIZE; 651 652 shost->nr_hw_queues = MIN_NUM_CPUS_MSIX(qedi); 653 654 pci_set_drvdata(pdev, qedi); 655 656 exit_setup_shost: 657 return qedi; 658 } 659 660 static int qedi_ll2_rx(void *cookie, struct sk_buff *skb, u32 arg1, u32 arg2) 661 { 662 struct qedi_ctx *qedi = (struct qedi_ctx *)cookie; 663 struct qedi_uio_dev *udev; 664 struct qedi_uio_ctrl *uctrl; 665 struct skb_work_list *work; 666 struct ethhdr *eh; 667 668 if (!qedi) { 669 QEDI_ERR(NULL, "qedi is NULL\n"); 670 return -1; 671 } 672 673 if (!test_bit(UIO_DEV_OPENED, &qedi->flags)) { 674 QEDI_INFO(&qedi->dbg_ctx, QEDI_LOG_UIO, 675 "UIO DEV is not opened\n"); 676 kfree_skb(skb); 677 return 0; 678 } 679 680 eh = (struct ethhdr *)skb->data; 681 /* Undo VLAN encapsulation */ 682 if (eh->h_proto == htons(ETH_P_8021Q)) { 683 memmove((u8 *)eh + VLAN_HLEN, eh, ETH_ALEN * 2); 684 eh = (struct ethhdr *)skb_pull(skb, VLAN_HLEN); 685 skb_reset_mac_header(skb); 686 } 687 688 /* Filter out non FIP/FCoE frames here to free them faster */ 689 if (eh->h_proto != htons(ETH_P_ARP) && 690 eh->h_proto != htons(ETH_P_IP) && 691 eh->h_proto != htons(ETH_P_IPV6)) { 692 QEDI_INFO(&qedi->dbg_ctx, QEDI_LOG_LL2, 693 "Dropping frame ethertype [0x%x] len [0x%x].\n", 694 eh->h_proto, skb->len); 695 kfree_skb(skb); 696 return 0; 697 } 698 699 QEDI_INFO(&qedi->dbg_ctx, QEDI_LOG_LL2, 700 "Allowed frame ethertype [0x%x] len [0x%x].\n", 701 eh->h_proto, skb->len); 702 703 udev = qedi->udev; 704 uctrl = udev->uctrl; 705 706 work = kzalloc(sizeof(*work), GFP_ATOMIC); 707 if (!work) { 708 QEDI_WARN(&qedi->dbg_ctx, 709 "Could not allocate work so dropping frame.\n"); 710 kfree_skb(skb); 711 return 0; 712 } 713 714 INIT_LIST_HEAD(&work->list); 715 work->skb = skb; 716 717 if (skb_vlan_tag_present(skb)) 718 work->vlan_id = skb_vlan_tag_get(skb); 719 720 if (work->vlan_id) 721 __vlan_insert_tag(work->skb, htons(ETH_P_8021Q), work->vlan_id); 722 723 spin_lock_bh(&qedi->ll2_lock); 724 list_add_tail(&work->list, &qedi->ll2_skb_list); 725 spin_unlock_bh(&qedi->ll2_lock); 726 727 wake_up_process(qedi->ll2_recv_thread); 728 729 return 0; 730 } 731 732 /* map this skb to iscsiuio mmaped region */ 733 static int qedi_ll2_process_skb(struct qedi_ctx *qedi, struct sk_buff *skb, 734 u16 vlan_id) 735 { 736 struct qedi_uio_dev *udev = NULL; 737 struct qedi_uio_ctrl *uctrl = NULL; 738 struct qedi_rx_bd rxbd; 739 struct qedi_rx_bd *p_rxbd; 740 u32 rx_bd_prod; 741 void *pkt; 742 int len = 0; 743 u32 prod; 744 745 if (!qedi) { 746 QEDI_ERR(NULL, "qedi is NULL\n"); 747 return -1; 748 } 749 750 udev = qedi->udev; 751 uctrl = udev->uctrl; 752 753 ++uctrl->hw_rx_prod_cnt; 754 prod = (uctrl->hw_rx_prod + 1) % RX_RING; 755 756 pkt = udev->rx_pkt + (prod * qedi_ll2_buf_size); 757 len = min_t(u32, skb->len, (u32)qedi_ll2_buf_size); 758 memcpy(pkt, skb->data, len); 759 760 memset(&rxbd, 0, sizeof(rxbd)); 761 rxbd.rx_pkt_index = prod; 762 rxbd.rx_pkt_len = len; 763 rxbd.vlan_id = vlan_id; 764 765 uctrl->hw_rx_bd_prod = (uctrl->hw_rx_bd_prod + 1) % QEDI_NUM_RX_BD; 766 rx_bd_prod = uctrl->hw_rx_bd_prod; 767 p_rxbd = (struct qedi_rx_bd *)udev->ll2_ring; 768 p_rxbd += rx_bd_prod; 769 770 memcpy(p_rxbd, &rxbd, sizeof(rxbd)); 771 772 QEDI_INFO(&qedi->dbg_ctx, QEDI_LOG_LL2, 773 "hw_rx_prod [%d] prod [%d] hw_rx_bd_prod [%d] rx_pkt_idx [%d] rx_len [%d].\n", 774 uctrl->hw_rx_prod, prod, uctrl->hw_rx_bd_prod, 775 rxbd.rx_pkt_index, rxbd.rx_pkt_len); 776 QEDI_INFO(&qedi->dbg_ctx, QEDI_LOG_LL2, 777 "host_rx_cons [%d] hw_rx_bd_cons [%d].\n", 778 uctrl->host_rx_cons, uctrl->host_rx_bd_cons); 779 780 uctrl->hw_rx_prod = prod; 781 782 /* notify the iscsiuio about new packet */ 783 uio_event_notify(&udev->qedi_uinfo); 784 785 return 0; 786 } 787 788 static void qedi_ll2_free_skbs(struct qedi_ctx *qedi) 789 { 790 struct skb_work_list *work, *work_tmp; 791 792 spin_lock_bh(&qedi->ll2_lock); 793 list_for_each_entry_safe(work, work_tmp, &qedi->ll2_skb_list, list) { 794 list_del(&work->list); 795 if (work->skb) 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 = 4000; 869 qedi->pf_params.iscsi_pf_params.max_fin_rt = 2; 870 871 for (log_page_size = 0 ; log_page_size < 32 ; log_page_size++) { 872 if ((1 << log_page_size) == QEDI_PAGE_SIZE) 873 break; 874 } 875 qedi->pf_params.iscsi_pf_params.log_page_size = log_page_size; 876 877 qedi->pf_params.iscsi_pf_params.glbl_q_params_addr = 878 (u64)qedi->hw_p_cpuq; 879 880 /* RQ BDQ initializations. 881 * rq_num_entries: suggested value for Initiator is 16 (4KB RQ) 882 * rqe_log_size: 8 for 256B RQE 883 */ 884 qedi->pf_params.iscsi_pf_params.rqe_log_size = 8; 885 /* BDQ address and size */ 886 qedi->pf_params.iscsi_pf_params.bdq_pbl_base_addr[BDQ_ID_RQ] = 887 qedi->bdq_pbl_list_dma; 888 qedi->pf_params.iscsi_pf_params.bdq_pbl_num_entries[BDQ_ID_RQ] = 889 qedi->bdq_pbl_list_num_entries; 890 qedi->pf_params.iscsi_pf_params.rq_buffer_size = QEDI_BDQ_BUF_SIZE; 891 892 /* cq_num_entries: num_tasks + rq_num_entries */ 893 qedi->pf_params.iscsi_pf_params.cq_num_entries = 2048; 894 895 qedi->pf_params.iscsi_pf_params.gl_rq_pi = QEDI_PROTO_CQ_PROD_IDX; 896 qedi->pf_params.iscsi_pf_params.gl_cmd_pi = 1; 897 898 err_alloc_mem: 899 return rval; 900 } 901 902 /* Free DMA coherent memory for array of queue pointers we pass to qed */ 903 static void qedi_free_iscsi_pf_param(struct qedi_ctx *qedi) 904 { 905 size_t size = 0; 906 907 if (qedi->p_cpuq) { 908 size = qedi->num_queues * sizeof(struct qedi_glbl_q_params); 909 dma_free_coherent(&qedi->pdev->dev, size, qedi->p_cpuq, 910 qedi->hw_p_cpuq); 911 } 912 913 qedi_free_global_queues(qedi); 914 915 kfree(qedi->global_queues); 916 } 917 918 static void qedi_get_boot_tgt_info(struct nvm_iscsi_block *block, 919 struct qedi_boot_target *tgt, u8 index) 920 { 921 u32 ipv6_en; 922 923 ipv6_en = !!(block->generic.ctrl_flags & 924 NVM_ISCSI_CFG_GEN_IPV6_ENABLED); 925 926 snprintf(tgt->iscsi_name, sizeof(tgt->iscsi_name), "%s\n", 927 block->target[index].target_name.byte); 928 929 tgt->ipv6_en = ipv6_en; 930 931 if (ipv6_en) 932 snprintf(tgt->ip_addr, IPV6_LEN, "%pI6\n", 933 block->target[index].ipv6_addr.byte); 934 else 935 snprintf(tgt->ip_addr, IPV4_LEN, "%pI4\n", 936 block->target[index].ipv4_addr.byte); 937 } 938 939 static int qedi_find_boot_info(struct qedi_ctx *qedi, 940 struct qed_mfw_tlv_iscsi *iscsi, 941 struct nvm_iscsi_block *block) 942 { 943 struct qedi_boot_target *pri_tgt = NULL, *sec_tgt = NULL; 944 u32 pri_ctrl_flags = 0, sec_ctrl_flags = 0, found = 0; 945 struct iscsi_cls_session *cls_sess; 946 struct iscsi_cls_conn *cls_conn; 947 struct qedi_conn *qedi_conn; 948 struct iscsi_session *sess; 949 struct iscsi_conn *conn; 950 char ep_ip_addr[64]; 951 int i, ret = 0; 952 953 pri_ctrl_flags = !!(block->target[0].ctrl_flags & 954 NVM_ISCSI_CFG_TARGET_ENABLED); 955 if (pri_ctrl_flags) { 956 pri_tgt = kzalloc(sizeof(*pri_tgt), GFP_KERNEL); 957 if (!pri_tgt) 958 return -1; 959 qedi_get_boot_tgt_info(block, pri_tgt, 0); 960 } 961 962 sec_ctrl_flags = !!(block->target[1].ctrl_flags & 963 NVM_ISCSI_CFG_TARGET_ENABLED); 964 if (sec_ctrl_flags) { 965 sec_tgt = kzalloc(sizeof(*sec_tgt), GFP_KERNEL); 966 if (!sec_tgt) { 967 ret = -1; 968 goto free_tgt; 969 } 970 qedi_get_boot_tgt_info(block, sec_tgt, 1); 971 } 972 973 for (i = 0; i < qedi->max_active_conns; i++) { 974 qedi_conn = qedi_get_conn_from_id(qedi, i); 975 if (!qedi_conn) 976 continue; 977 978 if (qedi_conn->ep->ip_type == TCP_IPV4) 979 snprintf(ep_ip_addr, IPV4_LEN, "%pI4\n", 980 qedi_conn->ep->dst_addr); 981 else 982 snprintf(ep_ip_addr, IPV6_LEN, "%pI6\n", 983 qedi_conn->ep->dst_addr); 984 985 cls_conn = qedi_conn->cls_conn; 986 conn = cls_conn->dd_data; 987 cls_sess = iscsi_conn_to_session(cls_conn); 988 sess = cls_sess->dd_data; 989 990 if (!iscsi_is_session_online(cls_sess)) 991 continue; 992 993 if (pri_ctrl_flags) { 994 if (!strcmp(pri_tgt->iscsi_name, sess->targetname) && 995 !strcmp(pri_tgt->ip_addr, ep_ip_addr)) { 996 found = 1; 997 break; 998 } 999 } 1000 1001 if (sec_ctrl_flags) { 1002 if (!strcmp(sec_tgt->iscsi_name, sess->targetname) && 1003 !strcmp(sec_tgt->ip_addr, ep_ip_addr)) { 1004 found = 1; 1005 break; 1006 } 1007 } 1008 } 1009 1010 if (found) { 1011 if (conn->hdrdgst_en) { 1012 iscsi->header_digest_set = true; 1013 iscsi->header_digest = 1; 1014 } 1015 1016 if (conn->datadgst_en) { 1017 iscsi->data_digest_set = true; 1018 iscsi->data_digest = 1; 1019 } 1020 iscsi->boot_taget_portal_set = true; 1021 iscsi->boot_taget_portal = sess->tpgt; 1022 1023 } else { 1024 ret = -1; 1025 } 1026 1027 if (sec_ctrl_flags) 1028 kfree(sec_tgt); 1029 free_tgt: 1030 if (pri_ctrl_flags) 1031 kfree(pri_tgt); 1032 1033 return ret; 1034 } 1035 1036 static void qedi_get_generic_tlv_data(void *dev, struct qed_generic_tlvs *data) 1037 { 1038 struct qedi_ctx *qedi; 1039 1040 if (!dev) { 1041 QEDI_INFO(NULL, QEDI_LOG_EVT, 1042 "dev is NULL so ignoring get_generic_tlv_data request.\n"); 1043 return; 1044 } 1045 qedi = (struct qedi_ctx *)dev; 1046 1047 memset(data, 0, sizeof(struct qed_generic_tlvs)); 1048 ether_addr_copy(data->mac[0], qedi->mac); 1049 } 1050 1051 /* 1052 * Protocol TLV handler 1053 */ 1054 static void qedi_get_protocol_tlv_data(void *dev, void *data) 1055 { 1056 struct qed_mfw_tlv_iscsi *iscsi = data; 1057 struct qed_iscsi_stats *fw_iscsi_stats; 1058 struct nvm_iscsi_block *block = NULL; 1059 u32 chap_en = 0, mchap_en = 0; 1060 struct qedi_ctx *qedi = dev; 1061 int rval = 0; 1062 1063 fw_iscsi_stats = kmalloc(sizeof(*fw_iscsi_stats), GFP_KERNEL); 1064 if (!fw_iscsi_stats) { 1065 QEDI_ERR(&qedi->dbg_ctx, 1066 "Could not allocate memory for fw_iscsi_stats.\n"); 1067 goto exit_get_data; 1068 } 1069 1070 mutex_lock(&qedi->stats_lock); 1071 /* Query firmware for offload stats */ 1072 qedi_ops->get_stats(qedi->cdev, fw_iscsi_stats); 1073 mutex_unlock(&qedi->stats_lock); 1074 1075 iscsi->rx_frames_set = true; 1076 iscsi->rx_frames = fw_iscsi_stats->iscsi_rx_packet_cnt; 1077 iscsi->rx_bytes_set = true; 1078 iscsi->rx_bytes = fw_iscsi_stats->iscsi_rx_bytes_cnt; 1079 iscsi->tx_frames_set = true; 1080 iscsi->tx_frames = fw_iscsi_stats->iscsi_tx_packet_cnt; 1081 iscsi->tx_bytes_set = true; 1082 iscsi->tx_bytes = fw_iscsi_stats->iscsi_tx_bytes_cnt; 1083 iscsi->frame_size_set = true; 1084 iscsi->frame_size = qedi->ll2_mtu; 1085 block = qedi_get_nvram_block(qedi); 1086 if (block) { 1087 chap_en = !!(block->generic.ctrl_flags & 1088 NVM_ISCSI_CFG_GEN_CHAP_ENABLED); 1089 mchap_en = !!(block->generic.ctrl_flags & 1090 NVM_ISCSI_CFG_GEN_CHAP_MUTUAL_ENABLED); 1091 1092 iscsi->auth_method_set = (chap_en || mchap_en) ? true : false; 1093 iscsi->auth_method = 1; 1094 if (chap_en) 1095 iscsi->auth_method = 2; 1096 if (mchap_en) 1097 iscsi->auth_method = 3; 1098 1099 iscsi->tx_desc_size_set = true; 1100 iscsi->tx_desc_size = QEDI_SQ_SIZE; 1101 iscsi->rx_desc_size_set = true; 1102 iscsi->rx_desc_size = QEDI_CQ_SIZE; 1103 1104 /* tpgt, hdr digest, data digest */ 1105 rval = qedi_find_boot_info(qedi, iscsi, block); 1106 if (rval) 1107 QEDI_INFO(&qedi->dbg_ctx, QEDI_LOG_INFO, 1108 "Boot target not set"); 1109 } 1110 1111 kfree(fw_iscsi_stats); 1112 exit_get_data: 1113 return; 1114 } 1115 1116 static void qedi_link_update(void *dev, struct qed_link_output *link) 1117 { 1118 struct qedi_ctx *qedi = (struct qedi_ctx *)dev; 1119 1120 if (link->link_up) { 1121 QEDI_INFO(&qedi->dbg_ctx, QEDI_LOG_INFO, "Link Up event.\n"); 1122 atomic_set(&qedi->link_state, QEDI_LINK_UP); 1123 } else { 1124 QEDI_INFO(&qedi->dbg_ctx, QEDI_LOG_INFO, 1125 "Link Down event.\n"); 1126 atomic_set(&qedi->link_state, QEDI_LINK_DOWN); 1127 } 1128 } 1129 1130 static struct qed_iscsi_cb_ops qedi_cb_ops = { 1131 { 1132 .link_update = qedi_link_update, 1133 .get_protocol_tlv_data = qedi_get_protocol_tlv_data, 1134 .get_generic_tlv_data = qedi_get_generic_tlv_data, 1135 } 1136 }; 1137 1138 static int qedi_queue_cqe(struct qedi_ctx *qedi, union iscsi_cqe *cqe, 1139 u16 que_idx, struct qedi_percpu_s *p) 1140 { 1141 struct qedi_work *qedi_work; 1142 struct qedi_conn *q_conn; 1143 struct iscsi_conn *conn; 1144 struct qedi_cmd *qedi_cmd; 1145 u32 iscsi_cid; 1146 int rc = 0; 1147 1148 iscsi_cid = cqe->cqe_common.conn_id; 1149 q_conn = qedi->cid_que.conn_cid_tbl[iscsi_cid]; 1150 if (!q_conn) { 1151 QEDI_WARN(&qedi->dbg_ctx, 1152 "Session no longer exists for cid=0x%x!!\n", 1153 iscsi_cid); 1154 return -1; 1155 } 1156 conn = q_conn->cls_conn->dd_data; 1157 1158 switch (cqe->cqe_common.cqe_type) { 1159 case ISCSI_CQE_TYPE_SOLICITED: 1160 case ISCSI_CQE_TYPE_SOLICITED_WITH_SENSE: 1161 qedi_cmd = qedi_get_cmd_from_tid(qedi, cqe->cqe_solicited.itid); 1162 if (!qedi_cmd) { 1163 rc = -1; 1164 break; 1165 } 1166 INIT_LIST_HEAD(&qedi_cmd->cqe_work.list); 1167 qedi_cmd->cqe_work.qedi = qedi; 1168 memcpy(&qedi_cmd->cqe_work.cqe, cqe, sizeof(union iscsi_cqe)); 1169 qedi_cmd->cqe_work.que_idx = que_idx; 1170 qedi_cmd->cqe_work.is_solicited = true; 1171 list_add_tail(&qedi_cmd->cqe_work.list, &p->work_list); 1172 break; 1173 case ISCSI_CQE_TYPE_UNSOLICITED: 1174 case ISCSI_CQE_TYPE_DUMMY: 1175 case ISCSI_CQE_TYPE_TASK_CLEANUP: 1176 qedi_work = kzalloc(sizeof(*qedi_work), GFP_ATOMIC); 1177 if (!qedi_work) { 1178 rc = -1; 1179 break; 1180 } 1181 INIT_LIST_HEAD(&qedi_work->list); 1182 qedi_work->qedi = qedi; 1183 memcpy(&qedi_work->cqe, cqe, sizeof(union iscsi_cqe)); 1184 qedi_work->que_idx = que_idx; 1185 qedi_work->is_solicited = false; 1186 list_add_tail(&qedi_work->list, &p->work_list); 1187 break; 1188 default: 1189 rc = -1; 1190 QEDI_ERR(&qedi->dbg_ctx, "FW Error cqe.\n"); 1191 } 1192 return rc; 1193 } 1194 1195 static bool qedi_process_completions(struct qedi_fastpath *fp) 1196 { 1197 struct qedi_ctx *qedi = fp->qedi; 1198 struct qed_sb_info *sb_info = fp->sb_info; 1199 struct status_block_e4 *sb = sb_info->sb_virt; 1200 struct qedi_percpu_s *p = NULL; 1201 struct global_queue *que; 1202 u16 prod_idx; 1203 unsigned long flags; 1204 union iscsi_cqe *cqe; 1205 int cpu; 1206 int ret; 1207 1208 /* Get the current firmware producer index */ 1209 prod_idx = sb->pi_array[QEDI_PROTO_CQ_PROD_IDX]; 1210 1211 if (prod_idx >= QEDI_CQ_SIZE) 1212 prod_idx = prod_idx % QEDI_CQ_SIZE; 1213 1214 que = qedi->global_queues[fp->sb_id]; 1215 QEDI_INFO(&qedi->dbg_ctx, QEDI_LOG_IO, 1216 "Before: global queue=%p prod_idx=%d cons_idx=%d, sb_id=%d\n", 1217 que, prod_idx, que->cq_cons_idx, fp->sb_id); 1218 1219 qedi->intr_cpu = fp->sb_id; 1220 cpu = smp_processor_id(); 1221 p = &per_cpu(qedi_percpu, cpu); 1222 1223 if (unlikely(!p->iothread)) 1224 WARN_ON(1); 1225 1226 spin_lock_irqsave(&p->p_work_lock, flags); 1227 while (que->cq_cons_idx != prod_idx) { 1228 cqe = &que->cq[que->cq_cons_idx]; 1229 1230 QEDI_INFO(&qedi->dbg_ctx, QEDI_LOG_IO, 1231 "cqe=%p prod_idx=%d cons_idx=%d.\n", 1232 cqe, prod_idx, que->cq_cons_idx); 1233 1234 ret = qedi_queue_cqe(qedi, cqe, fp->sb_id, p); 1235 if (ret) 1236 QEDI_WARN(&qedi->dbg_ctx, 1237 "Dropping CQE 0x%x for cid=0x%x.\n", 1238 que->cq_cons_idx, cqe->cqe_common.conn_id); 1239 1240 que->cq_cons_idx++; 1241 if (que->cq_cons_idx == QEDI_CQ_SIZE) 1242 que->cq_cons_idx = 0; 1243 } 1244 wake_up_process(p->iothread); 1245 spin_unlock_irqrestore(&p->p_work_lock, flags); 1246 1247 return true; 1248 } 1249 1250 static bool qedi_fp_has_work(struct qedi_fastpath *fp) 1251 { 1252 struct qedi_ctx *qedi = fp->qedi; 1253 struct global_queue *que; 1254 struct qed_sb_info *sb_info = fp->sb_info; 1255 struct status_block_e4 *sb = sb_info->sb_virt; 1256 u16 prod_idx; 1257 1258 barrier(); 1259 1260 /* Get the current firmware producer index */ 1261 prod_idx = sb->pi_array[QEDI_PROTO_CQ_PROD_IDX]; 1262 1263 /* Get the pointer to the global CQ this completion is on */ 1264 que = qedi->global_queues[fp->sb_id]; 1265 1266 /* prod idx wrap around uint16 */ 1267 if (prod_idx >= QEDI_CQ_SIZE) 1268 prod_idx = prod_idx % QEDI_CQ_SIZE; 1269 1270 return (que->cq_cons_idx != prod_idx); 1271 } 1272 1273 /* MSI-X fastpath handler code */ 1274 static irqreturn_t qedi_msix_handler(int irq, void *dev_id) 1275 { 1276 struct qedi_fastpath *fp = dev_id; 1277 struct qedi_ctx *qedi = fp->qedi; 1278 bool wake_io_thread = true; 1279 1280 qed_sb_ack(fp->sb_info, IGU_INT_DISABLE, 0); 1281 1282 process_again: 1283 wake_io_thread = qedi_process_completions(fp); 1284 if (wake_io_thread) { 1285 QEDI_INFO(&qedi->dbg_ctx, QEDI_LOG_DISC, 1286 "process already running\n"); 1287 } 1288 1289 if (qedi_fp_has_work(fp) == 0) 1290 qed_sb_update_sb_idx(fp->sb_info); 1291 1292 /* Check for more work */ 1293 rmb(); 1294 1295 if (qedi_fp_has_work(fp) == 0) 1296 qed_sb_ack(fp->sb_info, IGU_INT_ENABLE, 1); 1297 else 1298 goto process_again; 1299 1300 return IRQ_HANDLED; 1301 } 1302 1303 /* simd handler for MSI/INTa */ 1304 static void qedi_simd_int_handler(void *cookie) 1305 { 1306 /* Cookie is qedi_ctx struct */ 1307 struct qedi_ctx *qedi = (struct qedi_ctx *)cookie; 1308 1309 QEDI_WARN(&qedi->dbg_ctx, "qedi=%p.\n", qedi); 1310 } 1311 1312 #define QEDI_SIMD_HANDLER_NUM 0 1313 static void qedi_sync_free_irqs(struct qedi_ctx *qedi) 1314 { 1315 int i; 1316 1317 if (qedi->int_info.msix_cnt) { 1318 for (i = 0; i < qedi->int_info.used_cnt; i++) { 1319 synchronize_irq(qedi->int_info.msix[i].vector); 1320 irq_set_affinity_hint(qedi->int_info.msix[i].vector, 1321 NULL); 1322 free_irq(qedi->int_info.msix[i].vector, 1323 &qedi->fp_array[i]); 1324 } 1325 } else { 1326 qedi_ops->common->simd_handler_clean(qedi->cdev, 1327 QEDI_SIMD_HANDLER_NUM); 1328 } 1329 1330 qedi->int_info.used_cnt = 0; 1331 qedi_ops->common->set_fp_int(qedi->cdev, 0); 1332 } 1333 1334 static int qedi_request_msix_irq(struct qedi_ctx *qedi) 1335 { 1336 int i, rc, cpu; 1337 1338 cpu = cpumask_first(cpu_online_mask); 1339 for (i = 0; i < qedi->int_info.msix_cnt; i++) { 1340 rc = request_irq(qedi->int_info.msix[i].vector, 1341 qedi_msix_handler, 0, "qedi", 1342 &qedi->fp_array[i]); 1343 1344 if (rc) { 1345 QEDI_WARN(&qedi->dbg_ctx, "request_irq failed.\n"); 1346 qedi_sync_free_irqs(qedi); 1347 return rc; 1348 } 1349 qedi->int_info.used_cnt++; 1350 rc = irq_set_affinity_hint(qedi->int_info.msix[i].vector, 1351 get_cpu_mask(cpu)); 1352 cpu = cpumask_next(cpu, cpu_online_mask); 1353 } 1354 1355 return 0; 1356 } 1357 1358 static int qedi_setup_int(struct qedi_ctx *qedi) 1359 { 1360 int rc = 0; 1361 1362 rc = qedi_ops->common->set_fp_int(qedi->cdev, num_online_cpus()); 1363 rc = qedi_ops->common->get_fp_int(qedi->cdev, &qedi->int_info); 1364 if (rc) 1365 goto exit_setup_int; 1366 1367 QEDI_INFO(&qedi->dbg_ctx, QEDI_LOG_DISC, 1368 "Number of msix_cnt = 0x%x num of cpus = 0x%x\n", 1369 qedi->int_info.msix_cnt, num_online_cpus()); 1370 1371 if (qedi->int_info.msix_cnt) { 1372 rc = qedi_request_msix_irq(qedi); 1373 goto exit_setup_int; 1374 } else { 1375 qedi_ops->common->simd_handler_config(qedi->cdev, &qedi, 1376 QEDI_SIMD_HANDLER_NUM, 1377 qedi_simd_int_handler); 1378 qedi->int_info.used_cnt = 1; 1379 } 1380 1381 exit_setup_int: 1382 return rc; 1383 } 1384 1385 static void qedi_free_nvm_iscsi_cfg(struct qedi_ctx *qedi) 1386 { 1387 if (qedi->iscsi_image) 1388 dma_free_coherent(&qedi->pdev->dev, 1389 sizeof(struct qedi_nvm_iscsi_image), 1390 qedi->iscsi_image, qedi->nvm_buf_dma); 1391 } 1392 1393 static int qedi_alloc_nvm_iscsi_cfg(struct qedi_ctx *qedi) 1394 { 1395 struct qedi_nvm_iscsi_image nvm_image; 1396 1397 qedi->iscsi_image = dma_alloc_coherent(&qedi->pdev->dev, 1398 sizeof(nvm_image), 1399 &qedi->nvm_buf_dma, GFP_KERNEL); 1400 if (!qedi->iscsi_image) { 1401 QEDI_ERR(&qedi->dbg_ctx, "Could not allocate NVM BUF.\n"); 1402 return -ENOMEM; 1403 } 1404 QEDI_INFO(&qedi->dbg_ctx, QEDI_LOG_INFO, 1405 "NVM BUF addr=0x%p dma=0x%llx.\n", qedi->iscsi_image, 1406 qedi->nvm_buf_dma); 1407 1408 return 0; 1409 } 1410 1411 static void qedi_free_bdq(struct qedi_ctx *qedi) 1412 { 1413 int i; 1414 1415 if (qedi->bdq_pbl_list) 1416 dma_free_coherent(&qedi->pdev->dev, QEDI_PAGE_SIZE, 1417 qedi->bdq_pbl_list, qedi->bdq_pbl_list_dma); 1418 1419 if (qedi->bdq_pbl) 1420 dma_free_coherent(&qedi->pdev->dev, qedi->bdq_pbl_mem_size, 1421 qedi->bdq_pbl, qedi->bdq_pbl_dma); 1422 1423 for (i = 0; i < QEDI_BDQ_NUM; i++) { 1424 if (qedi->bdq[i].buf_addr) { 1425 dma_free_coherent(&qedi->pdev->dev, QEDI_BDQ_BUF_SIZE, 1426 qedi->bdq[i].buf_addr, 1427 qedi->bdq[i].buf_dma); 1428 } 1429 } 1430 } 1431 1432 static void qedi_free_global_queues(struct qedi_ctx *qedi) 1433 { 1434 int i; 1435 struct global_queue **gl = qedi->global_queues; 1436 1437 for (i = 0; i < qedi->num_queues; i++) { 1438 if (!gl[i]) 1439 continue; 1440 1441 if (gl[i]->cq) 1442 dma_free_coherent(&qedi->pdev->dev, gl[i]->cq_mem_size, 1443 gl[i]->cq, gl[i]->cq_dma); 1444 if (gl[i]->cq_pbl) 1445 dma_free_coherent(&qedi->pdev->dev, gl[i]->cq_pbl_size, 1446 gl[i]->cq_pbl, gl[i]->cq_pbl_dma); 1447 1448 kfree(gl[i]); 1449 } 1450 qedi_free_bdq(qedi); 1451 qedi_free_nvm_iscsi_cfg(qedi); 1452 } 1453 1454 static int qedi_alloc_bdq(struct qedi_ctx *qedi) 1455 { 1456 int i; 1457 struct scsi_bd *pbl; 1458 u64 *list; 1459 dma_addr_t page; 1460 1461 /* Alloc dma memory for BDQ buffers */ 1462 for (i = 0; i < QEDI_BDQ_NUM; i++) { 1463 qedi->bdq[i].buf_addr = 1464 dma_alloc_coherent(&qedi->pdev->dev, 1465 QEDI_BDQ_BUF_SIZE, 1466 &qedi->bdq[i].buf_dma, 1467 GFP_KERNEL); 1468 if (!qedi->bdq[i].buf_addr) { 1469 QEDI_ERR(&qedi->dbg_ctx, 1470 "Could not allocate BDQ buffer %d.\n", i); 1471 return -ENOMEM; 1472 } 1473 } 1474 1475 /* Alloc dma memory for BDQ page buffer list */ 1476 qedi->bdq_pbl_mem_size = QEDI_BDQ_NUM * sizeof(struct scsi_bd); 1477 qedi->bdq_pbl_mem_size = ALIGN(qedi->bdq_pbl_mem_size, QEDI_PAGE_SIZE); 1478 qedi->rq_num_entries = qedi->bdq_pbl_mem_size / sizeof(struct scsi_bd); 1479 1480 QEDI_INFO(&qedi->dbg_ctx, QEDI_LOG_CONN, "rq_num_entries = %d.\n", 1481 qedi->rq_num_entries); 1482 1483 qedi->bdq_pbl = dma_alloc_coherent(&qedi->pdev->dev, 1484 qedi->bdq_pbl_mem_size, 1485 &qedi->bdq_pbl_dma, GFP_KERNEL); 1486 if (!qedi->bdq_pbl) { 1487 QEDI_ERR(&qedi->dbg_ctx, "Could not allocate BDQ PBL.\n"); 1488 return -ENOMEM; 1489 } 1490 1491 /* 1492 * Populate BDQ PBL with physical and virtual address of individual 1493 * BDQ buffers 1494 */ 1495 pbl = (struct scsi_bd *)qedi->bdq_pbl; 1496 for (i = 0; i < QEDI_BDQ_NUM; i++) { 1497 pbl->address.hi = 1498 cpu_to_le32(QEDI_U64_HI(qedi->bdq[i].buf_dma)); 1499 pbl->address.lo = 1500 cpu_to_le32(QEDI_U64_LO(qedi->bdq[i].buf_dma)); 1501 QEDI_INFO(&qedi->dbg_ctx, QEDI_LOG_CONN, 1502 "pbl [0x%p] pbl->address hi [0x%llx] lo [0x%llx], idx [%d]\n", 1503 pbl, pbl->address.hi, pbl->address.lo, i); 1504 pbl->opaque.iscsi_opaque.reserved_zero[0] = 0; 1505 pbl->opaque.iscsi_opaque.reserved_zero[1] = 0; 1506 pbl->opaque.iscsi_opaque.reserved_zero[2] = 0; 1507 pbl->opaque.iscsi_opaque.opaque = cpu_to_le16(i); 1508 pbl++; 1509 } 1510 1511 /* Allocate list of PBL pages */ 1512 qedi->bdq_pbl_list = dma_alloc_coherent(&qedi->pdev->dev, 1513 QEDI_PAGE_SIZE, 1514 &qedi->bdq_pbl_list_dma, 1515 GFP_KERNEL); 1516 if (!qedi->bdq_pbl_list) { 1517 QEDI_ERR(&qedi->dbg_ctx, 1518 "Could not allocate list of PBL pages.\n"); 1519 return -ENOMEM; 1520 } 1521 1522 /* 1523 * Now populate PBL list with pages that contain pointers to the 1524 * individual buffers. 1525 */ 1526 qedi->bdq_pbl_list_num_entries = qedi->bdq_pbl_mem_size / 1527 QEDI_PAGE_SIZE; 1528 list = (u64 *)qedi->bdq_pbl_list; 1529 page = qedi->bdq_pbl_list_dma; 1530 for (i = 0; i < qedi->bdq_pbl_list_num_entries; i++) { 1531 *list = qedi->bdq_pbl_dma; 1532 list++; 1533 page += QEDI_PAGE_SIZE; 1534 } 1535 1536 return 0; 1537 } 1538 1539 static int qedi_alloc_global_queues(struct qedi_ctx *qedi) 1540 { 1541 u32 *list; 1542 int i; 1543 int status = 0, rc; 1544 u32 *pbl; 1545 dma_addr_t page; 1546 int num_pages; 1547 1548 /* 1549 * Number of global queues (CQ / RQ). This should 1550 * be <= number of available MSIX vectors for the PF 1551 */ 1552 if (!qedi->num_queues) { 1553 QEDI_ERR(&qedi->dbg_ctx, "No MSI-X vectors available!\n"); 1554 return 1; 1555 } 1556 1557 /* Make sure we allocated the PBL that will contain the physical 1558 * addresses of our queues 1559 */ 1560 if (!qedi->p_cpuq) { 1561 status = 1; 1562 goto mem_alloc_failure; 1563 } 1564 1565 qedi->global_queues = kzalloc((sizeof(struct global_queue *) * 1566 qedi->num_queues), GFP_KERNEL); 1567 if (!qedi->global_queues) { 1568 QEDI_ERR(&qedi->dbg_ctx, 1569 "Unable to allocate global queues array ptr memory\n"); 1570 return -ENOMEM; 1571 } 1572 QEDI_INFO(&qedi->dbg_ctx, QEDI_LOG_DISC, 1573 "qedi->global_queues=%p.\n", qedi->global_queues); 1574 1575 /* Allocate DMA coherent buffers for BDQ */ 1576 rc = qedi_alloc_bdq(qedi); 1577 if (rc) 1578 goto mem_alloc_failure; 1579 1580 /* Allocate DMA coherent buffers for NVM_ISCSI_CFG */ 1581 rc = qedi_alloc_nvm_iscsi_cfg(qedi); 1582 if (rc) 1583 goto mem_alloc_failure; 1584 1585 /* Allocate a CQ and an associated PBL for each MSI-X 1586 * vector. 1587 */ 1588 for (i = 0; i < qedi->num_queues; i++) { 1589 qedi->global_queues[i] = 1590 kzalloc(sizeof(*qedi->global_queues[0]), 1591 GFP_KERNEL); 1592 if (!qedi->global_queues[i]) { 1593 QEDI_ERR(&qedi->dbg_ctx, 1594 "Unable to allocation global queue %d.\n", i); 1595 goto mem_alloc_failure; 1596 } 1597 1598 qedi->global_queues[i]->cq_mem_size = 1599 (QEDI_CQ_SIZE + 8) * sizeof(union iscsi_cqe); 1600 qedi->global_queues[i]->cq_mem_size = 1601 (qedi->global_queues[i]->cq_mem_size + 1602 (QEDI_PAGE_SIZE - 1)); 1603 1604 qedi->global_queues[i]->cq_pbl_size = 1605 (qedi->global_queues[i]->cq_mem_size / 1606 QEDI_PAGE_SIZE) * sizeof(void *); 1607 qedi->global_queues[i]->cq_pbl_size = 1608 (qedi->global_queues[i]->cq_pbl_size + 1609 (QEDI_PAGE_SIZE - 1)); 1610 1611 qedi->global_queues[i]->cq = dma_alloc_coherent(&qedi->pdev->dev, 1612 qedi->global_queues[i]->cq_mem_size, 1613 &qedi->global_queues[i]->cq_dma, 1614 GFP_KERNEL); 1615 1616 if (!qedi->global_queues[i]->cq) { 1617 QEDI_WARN(&qedi->dbg_ctx, 1618 "Could not allocate cq.\n"); 1619 status = -ENOMEM; 1620 goto mem_alloc_failure; 1621 } 1622 qedi->global_queues[i]->cq_pbl = dma_alloc_coherent(&qedi->pdev->dev, 1623 qedi->global_queues[i]->cq_pbl_size, 1624 &qedi->global_queues[i]->cq_pbl_dma, 1625 GFP_KERNEL); 1626 1627 if (!qedi->global_queues[i]->cq_pbl) { 1628 QEDI_WARN(&qedi->dbg_ctx, 1629 "Could not allocate cq PBL.\n"); 1630 status = -ENOMEM; 1631 goto mem_alloc_failure; 1632 } 1633 1634 /* Create PBL */ 1635 num_pages = qedi->global_queues[i]->cq_mem_size / 1636 QEDI_PAGE_SIZE; 1637 page = qedi->global_queues[i]->cq_dma; 1638 pbl = (u32 *)qedi->global_queues[i]->cq_pbl; 1639 1640 while (num_pages--) { 1641 *pbl = (u32)page; 1642 pbl++; 1643 *pbl = (u32)((u64)page >> 32); 1644 pbl++; 1645 page += QEDI_PAGE_SIZE; 1646 } 1647 } 1648 1649 list = (u32 *)qedi->p_cpuq; 1650 1651 /* 1652 * The list is built as follows: CQ#0 PBL pointer, RQ#0 PBL pointer, 1653 * CQ#1 PBL pointer, RQ#1 PBL pointer, etc. Each PBL pointer points 1654 * to the physical address which contains an array of pointers to the 1655 * physical addresses of the specific queue pages. 1656 */ 1657 for (i = 0; i < qedi->num_queues; i++) { 1658 *list = (u32)qedi->global_queues[i]->cq_pbl_dma; 1659 list++; 1660 *list = (u32)((u64)qedi->global_queues[i]->cq_pbl_dma >> 32); 1661 list++; 1662 1663 *list = (u32)0; 1664 list++; 1665 *list = (u32)((u64)0 >> 32); 1666 list++; 1667 } 1668 1669 return 0; 1670 1671 mem_alloc_failure: 1672 qedi_free_global_queues(qedi); 1673 return status; 1674 } 1675 1676 int qedi_alloc_sq(struct qedi_ctx *qedi, struct qedi_endpoint *ep) 1677 { 1678 int rval = 0; 1679 u32 *pbl; 1680 dma_addr_t page; 1681 int num_pages; 1682 1683 if (!ep) 1684 return -EIO; 1685 1686 /* Calculate appropriate queue and PBL sizes */ 1687 ep->sq_mem_size = QEDI_SQ_SIZE * sizeof(struct iscsi_wqe); 1688 ep->sq_mem_size += QEDI_PAGE_SIZE - 1; 1689 1690 ep->sq_pbl_size = (ep->sq_mem_size / QEDI_PAGE_SIZE) * sizeof(void *); 1691 ep->sq_pbl_size = ep->sq_pbl_size + QEDI_PAGE_SIZE; 1692 1693 ep->sq = dma_alloc_coherent(&qedi->pdev->dev, ep->sq_mem_size, 1694 &ep->sq_dma, GFP_KERNEL); 1695 if (!ep->sq) { 1696 QEDI_WARN(&qedi->dbg_ctx, 1697 "Could not allocate send queue.\n"); 1698 rval = -ENOMEM; 1699 goto out; 1700 } 1701 ep->sq_pbl = dma_alloc_coherent(&qedi->pdev->dev, ep->sq_pbl_size, 1702 &ep->sq_pbl_dma, GFP_KERNEL); 1703 if (!ep->sq_pbl) { 1704 QEDI_WARN(&qedi->dbg_ctx, 1705 "Could not allocate send queue PBL.\n"); 1706 rval = -ENOMEM; 1707 goto out_free_sq; 1708 } 1709 1710 /* Create PBL */ 1711 num_pages = ep->sq_mem_size / QEDI_PAGE_SIZE; 1712 page = ep->sq_dma; 1713 pbl = (u32 *)ep->sq_pbl; 1714 1715 while (num_pages--) { 1716 *pbl = (u32)page; 1717 pbl++; 1718 *pbl = (u32)((u64)page >> 32); 1719 pbl++; 1720 page += QEDI_PAGE_SIZE; 1721 } 1722 1723 return rval; 1724 1725 out_free_sq: 1726 dma_free_coherent(&qedi->pdev->dev, ep->sq_mem_size, ep->sq, 1727 ep->sq_dma); 1728 out: 1729 return rval; 1730 } 1731 1732 void qedi_free_sq(struct qedi_ctx *qedi, struct qedi_endpoint *ep) 1733 { 1734 if (ep->sq_pbl) 1735 dma_free_coherent(&qedi->pdev->dev, ep->sq_pbl_size, ep->sq_pbl, 1736 ep->sq_pbl_dma); 1737 if (ep->sq) 1738 dma_free_coherent(&qedi->pdev->dev, ep->sq_mem_size, ep->sq, 1739 ep->sq_dma); 1740 } 1741 1742 int qedi_get_task_idx(struct qedi_ctx *qedi) 1743 { 1744 s16 tmp_idx; 1745 1746 again: 1747 tmp_idx = find_first_zero_bit(qedi->task_idx_map, 1748 MAX_ISCSI_TASK_ENTRIES); 1749 1750 if (tmp_idx >= MAX_ISCSI_TASK_ENTRIES) { 1751 QEDI_ERR(&qedi->dbg_ctx, "FW task context pool is full.\n"); 1752 tmp_idx = -1; 1753 goto err_idx; 1754 } 1755 1756 if (test_and_set_bit(tmp_idx, qedi->task_idx_map)) 1757 goto again; 1758 1759 err_idx: 1760 return tmp_idx; 1761 } 1762 1763 void qedi_clear_task_idx(struct qedi_ctx *qedi, int idx) 1764 { 1765 if (!test_and_clear_bit(idx, qedi->task_idx_map)) 1766 QEDI_ERR(&qedi->dbg_ctx, 1767 "FW task context, already cleared, tid=0x%x\n", idx); 1768 } 1769 1770 void qedi_update_itt_map(struct qedi_ctx *qedi, u32 tid, u32 proto_itt, 1771 struct qedi_cmd *cmd) 1772 { 1773 qedi->itt_map[tid].itt = proto_itt; 1774 qedi->itt_map[tid].p_cmd = cmd; 1775 1776 QEDI_INFO(&qedi->dbg_ctx, QEDI_LOG_CONN, 1777 "update itt map tid=0x%x, with proto itt=0x%x\n", tid, 1778 qedi->itt_map[tid].itt); 1779 } 1780 1781 void qedi_get_task_tid(struct qedi_ctx *qedi, u32 itt, s16 *tid) 1782 { 1783 u16 i; 1784 1785 for (i = 0; i < MAX_ISCSI_TASK_ENTRIES; i++) { 1786 if (qedi->itt_map[i].itt == itt) { 1787 *tid = i; 1788 QEDI_INFO(&qedi->dbg_ctx, QEDI_LOG_CONN, 1789 "Ref itt=0x%x, found at tid=0x%x\n", 1790 itt, *tid); 1791 return; 1792 } 1793 } 1794 1795 WARN_ON(1); 1796 } 1797 1798 void qedi_get_proto_itt(struct qedi_ctx *qedi, u32 tid, u32 *proto_itt) 1799 { 1800 *proto_itt = qedi->itt_map[tid].itt; 1801 QEDI_INFO(&qedi->dbg_ctx, QEDI_LOG_CONN, 1802 "Get itt map tid [0x%x with proto itt[0x%x]", 1803 tid, *proto_itt); 1804 } 1805 1806 struct qedi_cmd *qedi_get_cmd_from_tid(struct qedi_ctx *qedi, u32 tid) 1807 { 1808 struct qedi_cmd *cmd = NULL; 1809 1810 if (tid >= MAX_ISCSI_TASK_ENTRIES) 1811 return NULL; 1812 1813 cmd = qedi->itt_map[tid].p_cmd; 1814 if (cmd->task_id != tid) 1815 return NULL; 1816 1817 qedi->itt_map[tid].p_cmd = NULL; 1818 1819 return cmd; 1820 } 1821 1822 static int qedi_alloc_itt(struct qedi_ctx *qedi) 1823 { 1824 qedi->itt_map = kcalloc(MAX_ISCSI_TASK_ENTRIES, 1825 sizeof(struct qedi_itt_map), GFP_KERNEL); 1826 if (!qedi->itt_map) { 1827 QEDI_ERR(&qedi->dbg_ctx, 1828 "Unable to allocate itt map array memory\n"); 1829 return -ENOMEM; 1830 } 1831 return 0; 1832 } 1833 1834 static void qedi_free_itt(struct qedi_ctx *qedi) 1835 { 1836 kfree(qedi->itt_map); 1837 } 1838 1839 static struct qed_ll2_cb_ops qedi_ll2_cb_ops = { 1840 .rx_cb = qedi_ll2_rx, 1841 .tx_cb = NULL, 1842 }; 1843 1844 static int qedi_percpu_io_thread(void *arg) 1845 { 1846 struct qedi_percpu_s *p = arg; 1847 struct qedi_work *work, *tmp; 1848 unsigned long flags; 1849 LIST_HEAD(work_list); 1850 1851 set_user_nice(current, -20); 1852 1853 while (!kthread_should_stop()) { 1854 spin_lock_irqsave(&p->p_work_lock, flags); 1855 while (!list_empty(&p->work_list)) { 1856 list_splice_init(&p->work_list, &work_list); 1857 spin_unlock_irqrestore(&p->p_work_lock, flags); 1858 1859 list_for_each_entry_safe(work, tmp, &work_list, list) { 1860 list_del_init(&work->list); 1861 qedi_fp_process_cqes(work); 1862 if (!work->is_solicited) 1863 kfree(work); 1864 } 1865 cond_resched(); 1866 spin_lock_irqsave(&p->p_work_lock, flags); 1867 } 1868 set_current_state(TASK_INTERRUPTIBLE); 1869 spin_unlock_irqrestore(&p->p_work_lock, flags); 1870 schedule(); 1871 } 1872 __set_current_state(TASK_RUNNING); 1873 1874 return 0; 1875 } 1876 1877 static int qedi_cpu_online(unsigned int cpu) 1878 { 1879 struct qedi_percpu_s *p = this_cpu_ptr(&qedi_percpu); 1880 struct task_struct *thread; 1881 1882 thread = kthread_create_on_node(qedi_percpu_io_thread, (void *)p, 1883 cpu_to_node(cpu), 1884 "qedi_thread/%d", cpu); 1885 if (IS_ERR(thread)) 1886 return PTR_ERR(thread); 1887 1888 kthread_bind(thread, cpu); 1889 p->iothread = thread; 1890 wake_up_process(thread); 1891 return 0; 1892 } 1893 1894 static int qedi_cpu_offline(unsigned int cpu) 1895 { 1896 struct qedi_percpu_s *p = this_cpu_ptr(&qedi_percpu); 1897 struct qedi_work *work, *tmp; 1898 struct task_struct *thread; 1899 1900 spin_lock_bh(&p->p_work_lock); 1901 thread = p->iothread; 1902 p->iothread = NULL; 1903 1904 list_for_each_entry_safe(work, tmp, &p->work_list, list) { 1905 list_del_init(&work->list); 1906 qedi_fp_process_cqes(work); 1907 if (!work->is_solicited) 1908 kfree(work); 1909 } 1910 1911 spin_unlock_bh(&p->p_work_lock); 1912 if (thread) 1913 kthread_stop(thread); 1914 return 0; 1915 } 1916 1917 void qedi_reset_host_mtu(struct qedi_ctx *qedi, u16 mtu) 1918 { 1919 struct qed_ll2_params params; 1920 1921 qedi_recover_all_conns(qedi); 1922 1923 qedi_ops->ll2->stop(qedi->cdev); 1924 qedi_ll2_free_skbs(qedi); 1925 1926 QEDI_INFO(&qedi->dbg_ctx, QEDI_LOG_INFO, "old MTU %u, new MTU %u\n", 1927 qedi->ll2_mtu, mtu); 1928 memset(¶ms, 0, sizeof(params)); 1929 qedi->ll2_mtu = mtu; 1930 params.mtu = qedi->ll2_mtu + IPV6_HDR_LEN + TCP_HDR_LEN; 1931 params.drop_ttl0_packets = 0; 1932 params.rx_vlan_stripping = 1; 1933 ether_addr_copy(params.ll2_mac_address, qedi->dev_info.common.hw_mac); 1934 qedi_ops->ll2->start(qedi->cdev, ¶ms); 1935 } 1936 1937 /** 1938 * qedi_get_nvram_block: - Scan through the iSCSI NVRAM block (while accounting 1939 * for gaps) for the matching absolute-pf-id of the QEDI device. 1940 */ 1941 static struct nvm_iscsi_block * 1942 qedi_get_nvram_block(struct qedi_ctx *qedi) 1943 { 1944 int i; 1945 u8 pf; 1946 u32 flags; 1947 struct nvm_iscsi_block *block; 1948 1949 pf = qedi->dev_info.common.abs_pf_id; 1950 block = &qedi->iscsi_image->iscsi_cfg.block[0]; 1951 for (i = 0; i < NUM_OF_ISCSI_PF_SUPPORTED; i++, block++) { 1952 flags = ((block->id) & NVM_ISCSI_CFG_BLK_CTRL_FLAG_MASK) >> 1953 NVM_ISCSI_CFG_BLK_CTRL_FLAG_OFFSET; 1954 if (flags & (NVM_ISCSI_CFG_BLK_CTRL_FLAG_IS_NOT_EMPTY | 1955 NVM_ISCSI_CFG_BLK_CTRL_FLAG_PF_MAPPED) && 1956 (pf == (block->id & NVM_ISCSI_CFG_BLK_MAPPED_PF_ID_MASK) 1957 >> NVM_ISCSI_CFG_BLK_MAPPED_PF_ID_OFFSET)) 1958 return block; 1959 } 1960 return NULL; 1961 } 1962 1963 static ssize_t qedi_show_boot_eth_info(void *data, int type, char *buf) 1964 { 1965 struct qedi_ctx *qedi = data; 1966 struct nvm_iscsi_initiator *initiator; 1967 int rc = 1; 1968 u32 ipv6_en, dhcp_en, ip_len; 1969 struct nvm_iscsi_block *block; 1970 char *fmt, *ip, *sub, *gw; 1971 1972 block = qedi_get_nvram_block(qedi); 1973 if (!block) 1974 return 0; 1975 1976 initiator = &block->initiator; 1977 ipv6_en = block->generic.ctrl_flags & 1978 NVM_ISCSI_CFG_GEN_IPV6_ENABLED; 1979 dhcp_en = block->generic.ctrl_flags & 1980 NVM_ISCSI_CFG_GEN_DHCP_TCPIP_CONFIG_ENABLED; 1981 /* Static IP assignments. */ 1982 fmt = ipv6_en ? "%pI6\n" : "%pI4\n"; 1983 ip = ipv6_en ? initiator->ipv6.addr.byte : initiator->ipv4.addr.byte; 1984 ip_len = ipv6_en ? IPV6_LEN : IPV4_LEN; 1985 sub = ipv6_en ? initiator->ipv6.subnet_mask.byte : 1986 initiator->ipv4.subnet_mask.byte; 1987 gw = ipv6_en ? initiator->ipv6.gateway.byte : 1988 initiator->ipv4.gateway.byte; 1989 /* DHCP IP adjustments. */ 1990 fmt = dhcp_en ? "%s\n" : fmt; 1991 if (dhcp_en) { 1992 ip = ipv6_en ? "0::0" : "0.0.0.0"; 1993 sub = ip; 1994 gw = ip; 1995 ip_len = ipv6_en ? 5 : 8; 1996 } 1997 1998 switch (type) { 1999 case ISCSI_BOOT_ETH_IP_ADDR: 2000 rc = snprintf(buf, ip_len, fmt, ip); 2001 break; 2002 case ISCSI_BOOT_ETH_SUBNET_MASK: 2003 rc = snprintf(buf, ip_len, fmt, sub); 2004 break; 2005 case ISCSI_BOOT_ETH_GATEWAY: 2006 rc = snprintf(buf, ip_len, fmt, gw); 2007 break; 2008 case ISCSI_BOOT_ETH_FLAGS: 2009 rc = snprintf(buf, 3, "%hhd\n", 2010 SYSFS_FLAG_FW_SEL_BOOT); 2011 break; 2012 case ISCSI_BOOT_ETH_INDEX: 2013 rc = snprintf(buf, 3, "0\n"); 2014 break; 2015 case ISCSI_BOOT_ETH_MAC: 2016 rc = sysfs_format_mac(buf, qedi->mac, ETH_ALEN); 2017 break; 2018 case ISCSI_BOOT_ETH_VLAN: 2019 rc = snprintf(buf, 12, "%d\n", 2020 GET_FIELD2(initiator->generic_cont0, 2021 NVM_ISCSI_CFG_INITIATOR_VLAN)); 2022 break; 2023 case ISCSI_BOOT_ETH_ORIGIN: 2024 if (dhcp_en) 2025 rc = snprintf(buf, 3, "3\n"); 2026 break; 2027 default: 2028 rc = 0; 2029 break; 2030 } 2031 2032 return rc; 2033 } 2034 2035 static umode_t qedi_eth_get_attr_visibility(void *data, int type) 2036 { 2037 int rc = 1; 2038 2039 switch (type) { 2040 case ISCSI_BOOT_ETH_FLAGS: 2041 case ISCSI_BOOT_ETH_MAC: 2042 case ISCSI_BOOT_ETH_INDEX: 2043 case ISCSI_BOOT_ETH_IP_ADDR: 2044 case ISCSI_BOOT_ETH_SUBNET_MASK: 2045 case ISCSI_BOOT_ETH_GATEWAY: 2046 case ISCSI_BOOT_ETH_ORIGIN: 2047 case ISCSI_BOOT_ETH_VLAN: 2048 rc = 0444; 2049 break; 2050 default: 2051 rc = 0; 2052 break; 2053 } 2054 return rc; 2055 } 2056 2057 static ssize_t qedi_show_boot_ini_info(void *data, int type, char *buf) 2058 { 2059 struct qedi_ctx *qedi = data; 2060 struct nvm_iscsi_initiator *initiator; 2061 int rc; 2062 struct nvm_iscsi_block *block; 2063 2064 block = qedi_get_nvram_block(qedi); 2065 if (!block) 2066 return 0; 2067 2068 initiator = &block->initiator; 2069 2070 switch (type) { 2071 case ISCSI_BOOT_INI_INITIATOR_NAME: 2072 rc = sprintf(buf, "%.*s\n", NVM_ISCSI_CFG_ISCSI_NAME_MAX_LEN, 2073 initiator->initiator_name.byte); 2074 break; 2075 default: 2076 rc = 0; 2077 break; 2078 } 2079 return rc; 2080 } 2081 2082 static umode_t qedi_ini_get_attr_visibility(void *data, int type) 2083 { 2084 int rc; 2085 2086 switch (type) { 2087 case ISCSI_BOOT_INI_INITIATOR_NAME: 2088 rc = 0444; 2089 break; 2090 default: 2091 rc = 0; 2092 break; 2093 } 2094 return rc; 2095 } 2096 2097 static ssize_t 2098 qedi_show_boot_tgt_info(struct qedi_ctx *qedi, int type, 2099 char *buf, enum qedi_nvm_tgts idx) 2100 { 2101 int rc = 1; 2102 u32 ctrl_flags, ipv6_en, chap_en, mchap_en, ip_len; 2103 struct nvm_iscsi_block *block; 2104 char *chap_name, *chap_secret; 2105 char *mchap_name, *mchap_secret; 2106 2107 block = qedi_get_nvram_block(qedi); 2108 if (!block) 2109 goto exit_show_tgt_info; 2110 2111 QEDI_INFO(&qedi->dbg_ctx, QEDI_LOG_EVT, 2112 "Port:%d, tgt_idx:%d\n", 2113 GET_FIELD2(block->id, NVM_ISCSI_CFG_BLK_MAPPED_PF_ID), idx); 2114 2115 ctrl_flags = block->target[idx].ctrl_flags & 2116 NVM_ISCSI_CFG_TARGET_ENABLED; 2117 2118 if (!ctrl_flags) { 2119 QEDI_INFO(&qedi->dbg_ctx, QEDI_LOG_EVT, 2120 "Target disabled\n"); 2121 goto exit_show_tgt_info; 2122 } 2123 2124 ipv6_en = block->generic.ctrl_flags & 2125 NVM_ISCSI_CFG_GEN_IPV6_ENABLED; 2126 ip_len = ipv6_en ? IPV6_LEN : IPV4_LEN; 2127 chap_en = block->generic.ctrl_flags & 2128 NVM_ISCSI_CFG_GEN_CHAP_ENABLED; 2129 chap_name = chap_en ? block->initiator.chap_name.byte : NULL; 2130 chap_secret = chap_en ? block->initiator.chap_password.byte : NULL; 2131 2132 mchap_en = block->generic.ctrl_flags & 2133 NVM_ISCSI_CFG_GEN_CHAP_MUTUAL_ENABLED; 2134 mchap_name = mchap_en ? block->target[idx].chap_name.byte : NULL; 2135 mchap_secret = mchap_en ? block->target[idx].chap_password.byte : NULL; 2136 2137 switch (type) { 2138 case ISCSI_BOOT_TGT_NAME: 2139 rc = sprintf(buf, "%.*s\n", NVM_ISCSI_CFG_ISCSI_NAME_MAX_LEN, 2140 block->target[idx].target_name.byte); 2141 break; 2142 case ISCSI_BOOT_TGT_IP_ADDR: 2143 if (ipv6_en) 2144 rc = snprintf(buf, ip_len, "%pI6\n", 2145 block->target[idx].ipv6_addr.byte); 2146 else 2147 rc = snprintf(buf, ip_len, "%pI4\n", 2148 block->target[idx].ipv4_addr.byte); 2149 break; 2150 case ISCSI_BOOT_TGT_PORT: 2151 rc = snprintf(buf, 12, "%d\n", 2152 GET_FIELD2(block->target[idx].generic_cont0, 2153 NVM_ISCSI_CFG_TARGET_TCP_PORT)); 2154 break; 2155 case ISCSI_BOOT_TGT_LUN: 2156 rc = snprintf(buf, 22, "%.*d\n", 2157 block->target[idx].lun.value[1], 2158 block->target[idx].lun.value[0]); 2159 break; 2160 case ISCSI_BOOT_TGT_CHAP_NAME: 2161 rc = sprintf(buf, "%.*s\n", NVM_ISCSI_CFG_CHAP_NAME_MAX_LEN, 2162 chap_name); 2163 break; 2164 case ISCSI_BOOT_TGT_CHAP_SECRET: 2165 rc = sprintf(buf, "%.*s\n", NVM_ISCSI_CFG_CHAP_NAME_MAX_LEN, 2166 chap_secret); 2167 break; 2168 case ISCSI_BOOT_TGT_REV_CHAP_NAME: 2169 rc = sprintf(buf, "%.*s\n", NVM_ISCSI_CFG_CHAP_NAME_MAX_LEN, 2170 mchap_name); 2171 break; 2172 case ISCSI_BOOT_TGT_REV_CHAP_SECRET: 2173 rc = sprintf(buf, "%.*s\n", NVM_ISCSI_CFG_CHAP_NAME_MAX_LEN, 2174 mchap_secret); 2175 break; 2176 case ISCSI_BOOT_TGT_FLAGS: 2177 rc = snprintf(buf, 3, "%hhd\n", SYSFS_FLAG_FW_SEL_BOOT); 2178 break; 2179 case ISCSI_BOOT_TGT_NIC_ASSOC: 2180 rc = snprintf(buf, 3, "0\n"); 2181 break; 2182 default: 2183 rc = 0; 2184 break; 2185 } 2186 2187 exit_show_tgt_info: 2188 return rc; 2189 } 2190 2191 static ssize_t qedi_show_boot_tgt_pri_info(void *data, int type, char *buf) 2192 { 2193 struct qedi_ctx *qedi = data; 2194 2195 return qedi_show_boot_tgt_info(qedi, type, buf, QEDI_NVM_TGT_PRI); 2196 } 2197 2198 static ssize_t qedi_show_boot_tgt_sec_info(void *data, int type, char *buf) 2199 { 2200 struct qedi_ctx *qedi = data; 2201 2202 return qedi_show_boot_tgt_info(qedi, type, buf, QEDI_NVM_TGT_SEC); 2203 } 2204 2205 static umode_t qedi_tgt_get_attr_visibility(void *data, int type) 2206 { 2207 int rc; 2208 2209 switch (type) { 2210 case ISCSI_BOOT_TGT_NAME: 2211 case ISCSI_BOOT_TGT_IP_ADDR: 2212 case ISCSI_BOOT_TGT_PORT: 2213 case ISCSI_BOOT_TGT_LUN: 2214 case ISCSI_BOOT_TGT_CHAP_NAME: 2215 case ISCSI_BOOT_TGT_CHAP_SECRET: 2216 case ISCSI_BOOT_TGT_REV_CHAP_NAME: 2217 case ISCSI_BOOT_TGT_REV_CHAP_SECRET: 2218 case ISCSI_BOOT_TGT_NIC_ASSOC: 2219 case ISCSI_BOOT_TGT_FLAGS: 2220 rc = 0444; 2221 break; 2222 default: 2223 rc = 0; 2224 break; 2225 } 2226 return rc; 2227 } 2228 2229 static void qedi_boot_release(void *data) 2230 { 2231 struct qedi_ctx *qedi = data; 2232 2233 scsi_host_put(qedi->shost); 2234 } 2235 2236 static int qedi_get_boot_info(struct qedi_ctx *qedi) 2237 { 2238 int ret = 1; 2239 struct qedi_nvm_iscsi_image nvm_image; 2240 2241 QEDI_INFO(&qedi->dbg_ctx, QEDI_LOG_INFO, 2242 "Get NVM iSCSI CFG image\n"); 2243 ret = qedi_ops->common->nvm_get_image(qedi->cdev, 2244 QED_NVM_IMAGE_ISCSI_CFG, 2245 (char *)qedi->iscsi_image, 2246 sizeof(nvm_image)); 2247 if (ret) 2248 QEDI_ERR(&qedi->dbg_ctx, 2249 "Could not get NVM image. ret = %d\n", ret); 2250 2251 return ret; 2252 } 2253 2254 static int qedi_setup_boot_info(struct qedi_ctx *qedi) 2255 { 2256 struct iscsi_boot_kobj *boot_kobj; 2257 2258 if (qedi_get_boot_info(qedi)) 2259 return -EPERM; 2260 2261 qedi->boot_kset = iscsi_boot_create_host_kset(qedi->shost->host_no); 2262 if (!qedi->boot_kset) 2263 goto kset_free; 2264 2265 if (!scsi_host_get(qedi->shost)) 2266 goto kset_free; 2267 2268 boot_kobj = iscsi_boot_create_target(qedi->boot_kset, 0, qedi, 2269 qedi_show_boot_tgt_pri_info, 2270 qedi_tgt_get_attr_visibility, 2271 qedi_boot_release); 2272 if (!boot_kobj) 2273 goto put_host; 2274 2275 if (!scsi_host_get(qedi->shost)) 2276 goto kset_free; 2277 2278 boot_kobj = iscsi_boot_create_target(qedi->boot_kset, 1, qedi, 2279 qedi_show_boot_tgt_sec_info, 2280 qedi_tgt_get_attr_visibility, 2281 qedi_boot_release); 2282 if (!boot_kobj) 2283 goto put_host; 2284 2285 if (!scsi_host_get(qedi->shost)) 2286 goto kset_free; 2287 2288 boot_kobj = iscsi_boot_create_initiator(qedi->boot_kset, 0, qedi, 2289 qedi_show_boot_ini_info, 2290 qedi_ini_get_attr_visibility, 2291 qedi_boot_release); 2292 if (!boot_kobj) 2293 goto put_host; 2294 2295 if (!scsi_host_get(qedi->shost)) 2296 goto kset_free; 2297 2298 boot_kobj = iscsi_boot_create_ethernet(qedi->boot_kset, 0, qedi, 2299 qedi_show_boot_eth_info, 2300 qedi_eth_get_attr_visibility, 2301 qedi_boot_release); 2302 if (!boot_kobj) 2303 goto put_host; 2304 2305 return 0; 2306 2307 put_host: 2308 scsi_host_put(qedi->shost); 2309 kset_free: 2310 iscsi_boot_destroy_kset(qedi->boot_kset); 2311 return -ENOMEM; 2312 } 2313 2314 static void __qedi_remove(struct pci_dev *pdev, int mode) 2315 { 2316 struct qedi_ctx *qedi = pci_get_drvdata(pdev); 2317 int rval; 2318 2319 if (qedi->tmf_thread) { 2320 flush_workqueue(qedi->tmf_thread); 2321 destroy_workqueue(qedi->tmf_thread); 2322 qedi->tmf_thread = NULL; 2323 } 2324 2325 if (qedi->offload_thread) { 2326 flush_workqueue(qedi->offload_thread); 2327 destroy_workqueue(qedi->offload_thread); 2328 qedi->offload_thread = NULL; 2329 } 2330 2331 #ifdef CONFIG_DEBUG_FS 2332 qedi_dbg_host_exit(&qedi->dbg_ctx); 2333 #endif 2334 if (!test_bit(QEDI_IN_OFFLINE, &qedi->flags)) 2335 qedi_ops->common->set_power_state(qedi->cdev, PCI_D0); 2336 2337 qedi_sync_free_irqs(qedi); 2338 2339 if (!test_bit(QEDI_IN_OFFLINE, &qedi->flags)) { 2340 qedi_ops->stop(qedi->cdev); 2341 qedi_ops->ll2->stop(qedi->cdev); 2342 } 2343 2344 if (mode == QEDI_MODE_NORMAL) 2345 qedi_free_iscsi_pf_param(qedi); 2346 2347 rval = qedi_ops->common->update_drv_state(qedi->cdev, false); 2348 if (rval) 2349 QEDI_ERR(&qedi->dbg_ctx, "Failed to send drv state to MFW\n"); 2350 2351 if (!test_bit(QEDI_IN_OFFLINE, &qedi->flags)) { 2352 qedi_ops->common->slowpath_stop(qedi->cdev); 2353 qedi_ops->common->remove(qedi->cdev); 2354 } 2355 2356 qedi_destroy_fp(qedi); 2357 2358 if (mode == QEDI_MODE_NORMAL) { 2359 qedi_release_cid_que(qedi); 2360 qedi_cm_free_mem(qedi); 2361 qedi_free_uio(qedi->udev); 2362 qedi_free_itt(qedi); 2363 2364 iscsi_host_remove(qedi->shost); 2365 iscsi_host_free(qedi->shost); 2366 2367 if (qedi->ll2_recv_thread) { 2368 kthread_stop(qedi->ll2_recv_thread); 2369 qedi->ll2_recv_thread = NULL; 2370 } 2371 qedi_ll2_free_skbs(qedi); 2372 2373 if (qedi->boot_kset) 2374 iscsi_boot_destroy_kset(qedi->boot_kset); 2375 } 2376 } 2377 2378 static int __qedi_probe(struct pci_dev *pdev, int mode) 2379 { 2380 struct qedi_ctx *qedi; 2381 struct qed_ll2_params params; 2382 u32 dp_module = 0; 2383 u8 dp_level = 0; 2384 bool is_vf = false; 2385 char host_buf[16]; 2386 struct qed_link_params link_params; 2387 struct qed_slowpath_params sp_params; 2388 struct qed_probe_params qed_params; 2389 void *task_start, *task_end; 2390 int rc; 2391 u16 tmp; 2392 2393 if (mode != QEDI_MODE_RECOVERY) { 2394 qedi = qedi_host_alloc(pdev); 2395 if (!qedi) { 2396 rc = -ENOMEM; 2397 goto exit_probe; 2398 } 2399 } else { 2400 qedi = pci_get_drvdata(pdev); 2401 } 2402 2403 memset(&qed_params, 0, sizeof(qed_params)); 2404 qed_params.protocol = QED_PROTOCOL_ISCSI; 2405 qed_params.dp_module = dp_module; 2406 qed_params.dp_level = dp_level; 2407 qed_params.is_vf = is_vf; 2408 qedi->cdev = qedi_ops->common->probe(pdev, &qed_params); 2409 if (!qedi->cdev) { 2410 rc = -ENODEV; 2411 QEDI_ERR(&qedi->dbg_ctx, "Cannot initialize hardware\n"); 2412 goto free_host; 2413 } 2414 2415 atomic_set(&qedi->link_state, QEDI_LINK_DOWN); 2416 2417 rc = qedi_ops->fill_dev_info(qedi->cdev, &qedi->dev_info); 2418 if (rc) 2419 goto free_host; 2420 2421 if (mode != QEDI_MODE_RECOVERY) { 2422 rc = qedi_set_iscsi_pf_param(qedi); 2423 if (rc) { 2424 rc = -ENOMEM; 2425 QEDI_ERR(&qedi->dbg_ctx, 2426 "Set iSCSI pf param fail\n"); 2427 goto free_host; 2428 } 2429 } 2430 2431 qedi_ops->common->update_pf_params(qedi->cdev, &qedi->pf_params); 2432 2433 rc = qedi_prepare_fp(qedi); 2434 if (rc) { 2435 QEDI_ERR(&qedi->dbg_ctx, "Cannot start slowpath.\n"); 2436 goto free_pf_params; 2437 } 2438 2439 /* Start the Slowpath-process */ 2440 memset(&sp_params, 0, sizeof(struct qed_slowpath_params)); 2441 sp_params.int_mode = QED_INT_MODE_MSIX; 2442 sp_params.drv_major = QEDI_DRIVER_MAJOR_VER; 2443 sp_params.drv_minor = QEDI_DRIVER_MINOR_VER; 2444 sp_params.drv_rev = QEDI_DRIVER_REV_VER; 2445 sp_params.drv_eng = QEDI_DRIVER_ENG_VER; 2446 strlcpy(sp_params.name, "qedi iSCSI", QED_DRV_VER_STR_SIZE); 2447 rc = qedi_ops->common->slowpath_start(qedi->cdev, &sp_params); 2448 if (rc) { 2449 QEDI_ERR(&qedi->dbg_ctx, "Cannot start slowpath\n"); 2450 goto stop_hw; 2451 } 2452 2453 /* update_pf_params needs to be called before and after slowpath 2454 * start 2455 */ 2456 qedi_ops->common->update_pf_params(qedi->cdev, &qedi->pf_params); 2457 2458 rc = qedi_setup_int(qedi); 2459 if (rc) 2460 goto stop_iscsi_func; 2461 2462 qedi_ops->common->set_power_state(qedi->cdev, PCI_D0); 2463 2464 /* Learn information crucial for qedi to progress */ 2465 rc = qedi_ops->fill_dev_info(qedi->cdev, &qedi->dev_info); 2466 if (rc) 2467 goto stop_iscsi_func; 2468 2469 /* Record BDQ producer doorbell addresses */ 2470 qedi->bdq_primary_prod = qedi->dev_info.primary_dbq_rq_addr; 2471 qedi->bdq_secondary_prod = qedi->dev_info.secondary_bdq_rq_addr; 2472 QEDI_INFO(&qedi->dbg_ctx, QEDI_LOG_DISC, 2473 "BDQ primary_prod=%p secondary_prod=%p.\n", 2474 qedi->bdq_primary_prod, 2475 qedi->bdq_secondary_prod); 2476 2477 /* 2478 * We need to write the number of BDs in the BDQ we've preallocated so 2479 * the f/w will do a prefetch and we'll get an unsolicited CQE when a 2480 * packet arrives. 2481 */ 2482 qedi->bdq_prod_idx = QEDI_BDQ_NUM; 2483 QEDI_INFO(&qedi->dbg_ctx, QEDI_LOG_DISC, 2484 "Writing %d to primary and secondary BDQ doorbell registers.\n", 2485 qedi->bdq_prod_idx); 2486 writew(qedi->bdq_prod_idx, qedi->bdq_primary_prod); 2487 tmp = readw(qedi->bdq_primary_prod); 2488 writew(qedi->bdq_prod_idx, qedi->bdq_secondary_prod); 2489 tmp = readw(qedi->bdq_secondary_prod); 2490 2491 ether_addr_copy(qedi->mac, qedi->dev_info.common.hw_mac); 2492 QEDI_INFO(&qedi->dbg_ctx, QEDI_LOG_DISC, "MAC address is %pM.\n", 2493 qedi->mac); 2494 2495 sprintf(host_buf, "host_%d", qedi->shost->host_no); 2496 qedi_ops->common->set_name(qedi->cdev, host_buf); 2497 2498 qedi_ops->register_ops(qedi->cdev, &qedi_cb_ops, qedi); 2499 2500 memset(¶ms, 0, sizeof(params)); 2501 params.mtu = DEF_PATH_MTU + IPV6_HDR_LEN + TCP_HDR_LEN; 2502 qedi->ll2_mtu = DEF_PATH_MTU; 2503 params.drop_ttl0_packets = 0; 2504 params.rx_vlan_stripping = 1; 2505 ether_addr_copy(params.ll2_mac_address, qedi->dev_info.common.hw_mac); 2506 2507 if (mode != QEDI_MODE_RECOVERY) { 2508 /* set up rx path */ 2509 INIT_LIST_HEAD(&qedi->ll2_skb_list); 2510 spin_lock_init(&qedi->ll2_lock); 2511 /* start qedi context */ 2512 spin_lock_init(&qedi->hba_lock); 2513 spin_lock_init(&qedi->task_idx_lock); 2514 mutex_init(&qedi->stats_lock); 2515 } 2516 qedi_ops->ll2->register_cb_ops(qedi->cdev, &qedi_ll2_cb_ops, qedi); 2517 qedi_ops->ll2->start(qedi->cdev, ¶ms); 2518 2519 if (mode != QEDI_MODE_RECOVERY) { 2520 qedi->ll2_recv_thread = kthread_run(qedi_ll2_recv_thread, 2521 (void *)qedi, 2522 "qedi_ll2_thread"); 2523 } 2524 2525 rc = qedi_ops->start(qedi->cdev, &qedi->tasks, 2526 qedi, qedi_iscsi_event_cb); 2527 if (rc) { 2528 rc = -ENODEV; 2529 QEDI_ERR(&qedi->dbg_ctx, "Cannot start iSCSI function\n"); 2530 goto stop_slowpath; 2531 } 2532 2533 task_start = qedi_get_task_mem(&qedi->tasks, 0); 2534 task_end = qedi_get_task_mem(&qedi->tasks, MAX_TID_BLOCKS_ISCSI - 1); 2535 QEDI_INFO(&qedi->dbg_ctx, QEDI_LOG_DISC, 2536 "Task context start=%p, end=%p block_size=%u.\n", 2537 task_start, task_end, qedi->tasks.size); 2538 2539 memset(&link_params, 0, sizeof(link_params)); 2540 link_params.link_up = true; 2541 rc = qedi_ops->common->set_link(qedi->cdev, &link_params); 2542 if (rc) { 2543 QEDI_WARN(&qedi->dbg_ctx, "Link set up failed.\n"); 2544 atomic_set(&qedi->link_state, QEDI_LINK_DOWN); 2545 } 2546 2547 #ifdef CONFIG_DEBUG_FS 2548 qedi_dbg_host_init(&qedi->dbg_ctx, qedi_debugfs_ops, 2549 qedi_dbg_fops); 2550 #endif 2551 QEDI_INFO(&qedi->dbg_ctx, QEDI_LOG_INFO, 2552 "QLogic FastLinQ iSCSI Module qedi %s, FW %d.%d.%d.%d\n", 2553 QEDI_MODULE_VERSION, FW_MAJOR_VERSION, FW_MINOR_VERSION, 2554 FW_REVISION_VERSION, FW_ENGINEERING_VERSION); 2555 2556 if (mode == QEDI_MODE_NORMAL) { 2557 if (iscsi_host_add(qedi->shost, &pdev->dev)) { 2558 QEDI_ERR(&qedi->dbg_ctx, 2559 "Could not add iscsi host\n"); 2560 rc = -ENOMEM; 2561 goto remove_host; 2562 } 2563 2564 /* Allocate uio buffers */ 2565 rc = qedi_alloc_uio_rings(qedi); 2566 if (rc) { 2567 QEDI_ERR(&qedi->dbg_ctx, 2568 "UIO alloc ring failed err=%d\n", rc); 2569 goto remove_host; 2570 } 2571 2572 rc = qedi_init_uio(qedi); 2573 if (rc) { 2574 QEDI_ERR(&qedi->dbg_ctx, 2575 "UIO init failed, err=%d\n", rc); 2576 goto free_uio; 2577 } 2578 2579 /* host the array on iscsi_conn */ 2580 rc = qedi_setup_cid_que(qedi); 2581 if (rc) { 2582 QEDI_ERR(&qedi->dbg_ctx, 2583 "Could not setup cid que\n"); 2584 goto free_uio; 2585 } 2586 2587 rc = qedi_cm_alloc_mem(qedi); 2588 if (rc) { 2589 QEDI_ERR(&qedi->dbg_ctx, 2590 "Could not alloc cm memory\n"); 2591 goto free_cid_que; 2592 } 2593 2594 rc = qedi_alloc_itt(qedi); 2595 if (rc) { 2596 QEDI_ERR(&qedi->dbg_ctx, 2597 "Could not alloc itt memory\n"); 2598 goto free_cid_que; 2599 } 2600 2601 sprintf(host_buf, "host_%d", qedi->shost->host_no); 2602 qedi->tmf_thread = create_singlethread_workqueue(host_buf); 2603 if (!qedi->tmf_thread) { 2604 QEDI_ERR(&qedi->dbg_ctx, 2605 "Unable to start tmf thread!\n"); 2606 rc = -ENODEV; 2607 goto free_cid_que; 2608 } 2609 2610 sprintf(host_buf, "qedi_ofld%d", qedi->shost->host_no); 2611 qedi->offload_thread = create_workqueue(host_buf); 2612 if (!qedi->offload_thread) { 2613 QEDI_ERR(&qedi->dbg_ctx, 2614 "Unable to start offload thread!\n"); 2615 rc = -ENODEV; 2616 goto free_cid_que; 2617 } 2618 2619 /* F/w needs 1st task context memory entry for performance */ 2620 set_bit(QEDI_RESERVE_TASK_ID, qedi->task_idx_map); 2621 atomic_set(&qedi->num_offloads, 0); 2622 2623 if (qedi_setup_boot_info(qedi)) 2624 QEDI_ERR(&qedi->dbg_ctx, 2625 "No iSCSI boot target configured\n"); 2626 2627 rc = qedi_ops->common->update_drv_state(qedi->cdev, true); 2628 if (rc) 2629 QEDI_ERR(&qedi->dbg_ctx, 2630 "Failed to send drv state to MFW\n"); 2631 2632 } 2633 2634 return 0; 2635 2636 free_cid_que: 2637 qedi_release_cid_que(qedi); 2638 free_uio: 2639 qedi_free_uio(qedi->udev); 2640 remove_host: 2641 #ifdef CONFIG_DEBUG_FS 2642 qedi_dbg_host_exit(&qedi->dbg_ctx); 2643 #endif 2644 iscsi_host_remove(qedi->shost); 2645 stop_iscsi_func: 2646 qedi_ops->stop(qedi->cdev); 2647 stop_slowpath: 2648 qedi_ops->common->slowpath_stop(qedi->cdev); 2649 stop_hw: 2650 qedi_ops->common->remove(qedi->cdev); 2651 free_pf_params: 2652 qedi_free_iscsi_pf_param(qedi); 2653 free_host: 2654 iscsi_host_free(qedi->shost); 2655 exit_probe: 2656 return rc; 2657 } 2658 2659 static int qedi_probe(struct pci_dev *pdev, const struct pci_device_id *id) 2660 { 2661 return __qedi_probe(pdev, QEDI_MODE_NORMAL); 2662 } 2663 2664 static void qedi_remove(struct pci_dev *pdev) 2665 { 2666 __qedi_remove(pdev, QEDI_MODE_NORMAL); 2667 } 2668 2669 static struct pci_device_id qedi_pci_tbl[] = { 2670 { PCI_DEVICE(PCI_VENDOR_ID_QLOGIC, 0x165E) }, 2671 { PCI_DEVICE(PCI_VENDOR_ID_QLOGIC, 0x8084) }, 2672 { 0 }, 2673 }; 2674 MODULE_DEVICE_TABLE(pci, qedi_pci_tbl); 2675 2676 static enum cpuhp_state qedi_cpuhp_state; 2677 2678 static struct pci_driver qedi_pci_driver = { 2679 .name = QEDI_MODULE_NAME, 2680 .id_table = qedi_pci_tbl, 2681 .probe = qedi_probe, 2682 .remove = qedi_remove, 2683 }; 2684 2685 static int __init qedi_init(void) 2686 { 2687 struct qedi_percpu_s *p; 2688 int cpu, rc = 0; 2689 2690 qedi_ops = qed_get_iscsi_ops(); 2691 if (!qedi_ops) { 2692 QEDI_ERR(NULL, "Failed to get qed iSCSI operations\n"); 2693 return -EINVAL; 2694 } 2695 2696 #ifdef CONFIG_DEBUG_FS 2697 qedi_dbg_init("qedi"); 2698 #endif 2699 2700 qedi_scsi_transport = iscsi_register_transport(&qedi_iscsi_transport); 2701 if (!qedi_scsi_transport) { 2702 QEDI_ERR(NULL, "Could not register qedi transport"); 2703 rc = -ENOMEM; 2704 goto exit_qedi_init_1; 2705 } 2706 2707 for_each_possible_cpu(cpu) { 2708 p = &per_cpu(qedi_percpu, cpu); 2709 INIT_LIST_HEAD(&p->work_list); 2710 spin_lock_init(&p->p_work_lock); 2711 p->iothread = NULL; 2712 } 2713 2714 rc = cpuhp_setup_state(CPUHP_AP_ONLINE_DYN, "scsi/qedi:online", 2715 qedi_cpu_online, qedi_cpu_offline); 2716 if (rc < 0) 2717 goto exit_qedi_init_2; 2718 qedi_cpuhp_state = rc; 2719 2720 rc = pci_register_driver(&qedi_pci_driver); 2721 if (rc) { 2722 QEDI_ERR(NULL, "Failed to register driver\n"); 2723 goto exit_qedi_hp; 2724 } 2725 2726 return 0; 2727 2728 exit_qedi_hp: 2729 cpuhp_remove_state(qedi_cpuhp_state); 2730 exit_qedi_init_2: 2731 iscsi_unregister_transport(&qedi_iscsi_transport); 2732 exit_qedi_init_1: 2733 #ifdef CONFIG_DEBUG_FS 2734 qedi_dbg_exit(); 2735 #endif 2736 qed_put_iscsi_ops(); 2737 return rc; 2738 } 2739 2740 static void __exit qedi_cleanup(void) 2741 { 2742 pci_unregister_driver(&qedi_pci_driver); 2743 cpuhp_remove_state(qedi_cpuhp_state); 2744 iscsi_unregister_transport(&qedi_iscsi_transport); 2745 2746 #ifdef CONFIG_DEBUG_FS 2747 qedi_dbg_exit(); 2748 #endif 2749 qed_put_iscsi_ops(); 2750 } 2751 2752 MODULE_DESCRIPTION("QLogic FastLinQ 4xxxx iSCSI Module"); 2753 MODULE_LICENSE("GPL"); 2754 MODULE_AUTHOR("QLogic Corporation"); 2755 MODULE_VERSION(QEDI_MODULE_VERSION); 2756 module_init(qedi_init); 2757 module_exit(qedi_cleanup); 2758