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 const struct qed_iscsi_ops *qedi_ops; 48 static struct scsi_transport_template *qedi_scsi_transport; 49 static struct pci_driver qedi_pci_driver; 50 static DEFINE_PER_CPU(struct qedi_percpu_s, qedi_percpu); 51 static LIST_HEAD(qedi_udev_list); 52 /* Static function declaration */ 53 static int qedi_alloc_global_queues(struct qedi_ctx *qedi); 54 static void qedi_free_global_queues(struct qedi_ctx *qedi); 55 static struct qedi_cmd *qedi_get_cmd_from_tid(struct qedi_ctx *qedi, u32 tid); 56 static void qedi_reset_uio_rings(struct qedi_uio_dev *udev); 57 static void qedi_ll2_free_skbs(struct qedi_ctx *qedi); 58 static struct nvm_iscsi_block *qedi_get_nvram_block(struct qedi_ctx *qedi); 59 60 static int qedi_iscsi_event_cb(void *context, u8 fw_event_code, void *fw_handle) 61 { 62 struct qedi_ctx *qedi; 63 struct qedi_endpoint *qedi_ep; 64 struct iscsi_eqe_data *data; 65 int rval = 0; 66 67 if (!context || !fw_handle) { 68 QEDI_ERR(NULL, "Recv event with ctx NULL\n"); 69 return -EINVAL; 70 } 71 72 qedi = (struct qedi_ctx *)context; 73 QEDI_INFO(&qedi->dbg_ctx, QEDI_LOG_INFO, 74 "Recv Event %d fw_handle %p\n", fw_event_code, fw_handle); 75 76 data = (struct iscsi_eqe_data *)fw_handle; 77 QEDI_INFO(&qedi->dbg_ctx, QEDI_LOG_INFO, 78 "icid=0x%x conn_id=0x%x err-code=0x%x error-pdu-opcode-reserved=0x%x\n", 79 data->icid, data->conn_id, data->error_code, 80 data->error_pdu_opcode_reserved); 81 82 qedi_ep = qedi->ep_tbl[data->icid]; 83 84 if (!qedi_ep) { 85 QEDI_WARN(&qedi->dbg_ctx, 86 "Cannot process event, ep already disconnected, cid=0x%x\n", 87 data->icid); 88 WARN_ON(1); 89 return -ENODEV; 90 } 91 92 switch (fw_event_code) { 93 case ISCSI_EVENT_TYPE_ASYN_CONNECT_COMPLETE: 94 if (qedi_ep->state == EP_STATE_OFLDCONN_START) 95 qedi_ep->state = EP_STATE_OFLDCONN_COMPL; 96 97 wake_up_interruptible(&qedi_ep->tcp_ofld_wait); 98 break; 99 case ISCSI_EVENT_TYPE_ASYN_TERMINATE_DONE: 100 qedi_ep->state = EP_STATE_DISCONN_COMPL; 101 wake_up_interruptible(&qedi_ep->tcp_ofld_wait); 102 break; 103 case ISCSI_EVENT_TYPE_ISCSI_CONN_ERROR: 104 qedi_process_iscsi_error(qedi_ep, data); 105 break; 106 case ISCSI_EVENT_TYPE_ASYN_ABORT_RCVD: 107 case ISCSI_EVENT_TYPE_ASYN_SYN_RCVD: 108 case ISCSI_EVENT_TYPE_ASYN_MAX_RT_TIME: 109 case ISCSI_EVENT_TYPE_ASYN_MAX_RT_CNT: 110 case ISCSI_EVENT_TYPE_ASYN_MAX_KA_PROBES_CNT: 111 case ISCSI_EVENT_TYPE_ASYN_FIN_WAIT2: 112 case ISCSI_EVENT_TYPE_TCP_CONN_ERROR: 113 qedi_process_tcp_error(qedi_ep, data); 114 break; 115 default: 116 QEDI_ERR(&qedi->dbg_ctx, "Recv Unknown Event %u\n", 117 fw_event_code); 118 } 119 120 return rval; 121 } 122 123 static int qedi_uio_open(struct uio_info *uinfo, struct inode *inode) 124 { 125 struct qedi_uio_dev *udev = uinfo->priv; 126 struct qedi_ctx *qedi = udev->qedi; 127 128 if (!capable(CAP_NET_ADMIN)) 129 return -EPERM; 130 131 if (udev->uio_dev != -1) 132 return -EBUSY; 133 134 rtnl_lock(); 135 udev->uio_dev = iminor(inode); 136 qedi_reset_uio_rings(udev); 137 set_bit(UIO_DEV_OPENED, &qedi->flags); 138 rtnl_unlock(); 139 140 return 0; 141 } 142 143 static int qedi_uio_close(struct uio_info *uinfo, struct inode *inode) 144 { 145 struct qedi_uio_dev *udev = uinfo->priv; 146 struct qedi_ctx *qedi = udev->qedi; 147 148 udev->uio_dev = -1; 149 clear_bit(UIO_DEV_OPENED, &qedi->flags); 150 qedi_ll2_free_skbs(qedi); 151 return 0; 152 } 153 154 static void __qedi_free_uio_rings(struct qedi_uio_dev *udev) 155 { 156 if (udev->uctrl) { 157 free_page((unsigned long)udev->uctrl); 158 udev->uctrl = NULL; 159 } 160 161 if (udev->ll2_ring) { 162 free_page((unsigned long)udev->ll2_ring); 163 udev->ll2_ring = NULL; 164 } 165 166 if (udev->ll2_buf) { 167 free_pages((unsigned long)udev->ll2_buf, 2); 168 udev->ll2_buf = NULL; 169 } 170 } 171 172 static void __qedi_free_uio(struct qedi_uio_dev *udev) 173 { 174 uio_unregister_device(&udev->qedi_uinfo); 175 176 __qedi_free_uio_rings(udev); 177 178 pci_dev_put(udev->pdev); 179 kfree(udev); 180 } 181 182 static void qedi_free_uio(struct qedi_uio_dev *udev) 183 { 184 if (!udev) 185 return; 186 187 list_del_init(&udev->list); 188 __qedi_free_uio(udev); 189 } 190 191 static void qedi_reset_uio_rings(struct qedi_uio_dev *udev) 192 { 193 struct qedi_ctx *qedi = NULL; 194 struct qedi_uio_ctrl *uctrl = NULL; 195 196 qedi = udev->qedi; 197 uctrl = udev->uctrl; 198 199 spin_lock_bh(&qedi->ll2_lock); 200 uctrl->host_rx_cons = 0; 201 uctrl->hw_rx_prod = 0; 202 uctrl->hw_rx_bd_prod = 0; 203 uctrl->host_rx_bd_cons = 0; 204 205 memset(udev->ll2_ring, 0, udev->ll2_ring_size); 206 memset(udev->ll2_buf, 0, udev->ll2_buf_size); 207 spin_unlock_bh(&qedi->ll2_lock); 208 } 209 210 static int __qedi_alloc_uio_rings(struct qedi_uio_dev *udev) 211 { 212 int rc = 0; 213 214 if (udev->ll2_ring || udev->ll2_buf) 215 return rc; 216 217 /* Memory for control area. */ 218 udev->uctrl = (void *)get_zeroed_page(GFP_KERNEL); 219 if (!udev->uctrl) 220 return -ENOMEM; 221 222 /* Allocating memory for LL2 ring */ 223 udev->ll2_ring_size = QEDI_PAGE_SIZE; 224 udev->ll2_ring = (void *)get_zeroed_page(GFP_KERNEL | __GFP_COMP); 225 if (!udev->ll2_ring) { 226 rc = -ENOMEM; 227 goto exit_alloc_ring; 228 } 229 230 /* Allocating memory for Tx/Rx pkt buffer */ 231 udev->ll2_buf_size = TX_RX_RING * LL2_SINGLE_BUF_SIZE; 232 udev->ll2_buf_size = QEDI_PAGE_ALIGN(udev->ll2_buf_size); 233 udev->ll2_buf = (void *)__get_free_pages(GFP_KERNEL | __GFP_COMP | 234 __GFP_ZERO, 2); 235 if (!udev->ll2_buf) { 236 rc = -ENOMEM; 237 goto exit_alloc_buf; 238 } 239 return rc; 240 241 exit_alloc_buf: 242 free_page((unsigned long)udev->ll2_ring); 243 udev->ll2_ring = NULL; 244 exit_alloc_ring: 245 return rc; 246 } 247 248 static int qedi_alloc_uio_rings(struct qedi_ctx *qedi) 249 { 250 struct qedi_uio_dev *udev = NULL; 251 int rc = 0; 252 253 list_for_each_entry(udev, &qedi_udev_list, list) { 254 if (udev->pdev == qedi->pdev) { 255 udev->qedi = qedi; 256 if (__qedi_alloc_uio_rings(udev)) { 257 udev->qedi = NULL; 258 return -ENOMEM; 259 } 260 qedi->udev = udev; 261 return 0; 262 } 263 } 264 265 udev = kzalloc(sizeof(*udev), GFP_KERNEL); 266 if (!udev) { 267 rc = -ENOMEM; 268 goto err_udev; 269 } 270 271 udev->uio_dev = -1; 272 273 udev->qedi = qedi; 274 udev->pdev = qedi->pdev; 275 276 rc = __qedi_alloc_uio_rings(udev); 277 if (rc) 278 goto err_uctrl; 279 280 list_add(&udev->list, &qedi_udev_list); 281 282 pci_dev_get(udev->pdev); 283 qedi->udev = udev; 284 285 udev->tx_pkt = udev->ll2_buf; 286 udev->rx_pkt = udev->ll2_buf + LL2_SINGLE_BUF_SIZE; 287 return 0; 288 289 err_uctrl: 290 kfree(udev); 291 err_udev: 292 return -ENOMEM; 293 } 294 295 static int qedi_init_uio(struct qedi_ctx *qedi) 296 { 297 struct qedi_uio_dev *udev = qedi->udev; 298 struct uio_info *uinfo; 299 int ret = 0; 300 301 if (!udev) 302 return -ENOMEM; 303 304 uinfo = &udev->qedi_uinfo; 305 306 uinfo->mem[0].addr = (unsigned long)udev->uctrl; 307 uinfo->mem[0].size = sizeof(struct qedi_uio_ctrl); 308 uinfo->mem[0].memtype = UIO_MEM_LOGICAL; 309 310 uinfo->mem[1].addr = (unsigned long)udev->ll2_ring; 311 uinfo->mem[1].size = udev->ll2_ring_size; 312 uinfo->mem[1].memtype = UIO_MEM_LOGICAL; 313 314 uinfo->mem[2].addr = (unsigned long)udev->ll2_buf; 315 uinfo->mem[2].size = udev->ll2_buf_size; 316 uinfo->mem[2].memtype = UIO_MEM_LOGICAL; 317 318 uinfo->name = "qedi_uio"; 319 uinfo->version = QEDI_MODULE_VERSION; 320 uinfo->irq = UIO_IRQ_CUSTOM; 321 322 uinfo->open = qedi_uio_open; 323 uinfo->release = qedi_uio_close; 324 325 if (udev->uio_dev == -1) { 326 if (!uinfo->priv) { 327 uinfo->priv = udev; 328 329 ret = uio_register_device(&udev->pdev->dev, uinfo); 330 if (ret) { 331 QEDI_ERR(&qedi->dbg_ctx, 332 "UIO registration failed\n"); 333 } 334 } 335 } 336 337 return ret; 338 } 339 340 static int qedi_alloc_and_init_sb(struct qedi_ctx *qedi, 341 struct qed_sb_info *sb_info, u16 sb_id) 342 { 343 struct status_block_e4 *sb_virt; 344 dma_addr_t sb_phys; 345 int ret; 346 347 sb_virt = dma_alloc_coherent(&qedi->pdev->dev, 348 sizeof(struct status_block_e4), &sb_phys, 349 GFP_KERNEL); 350 if (!sb_virt) { 351 QEDI_ERR(&qedi->dbg_ctx, 352 "Status block allocation failed for id = %d.\n", 353 sb_id); 354 return -ENOMEM; 355 } 356 357 ret = qedi_ops->common->sb_init(qedi->cdev, sb_info, sb_virt, sb_phys, 358 sb_id, QED_SB_TYPE_STORAGE); 359 if (ret) { 360 QEDI_ERR(&qedi->dbg_ctx, 361 "Status block initialization failed for id = %d.\n", 362 sb_id); 363 return ret; 364 } 365 366 return 0; 367 } 368 369 static void qedi_free_sb(struct qedi_ctx *qedi) 370 { 371 struct qed_sb_info *sb_info; 372 int id; 373 374 for (id = 0; id < MIN_NUM_CPUS_MSIX(qedi); id++) { 375 sb_info = &qedi->sb_array[id]; 376 if (sb_info->sb_virt) 377 dma_free_coherent(&qedi->pdev->dev, 378 sizeof(*sb_info->sb_virt), 379 (void *)sb_info->sb_virt, 380 sb_info->sb_phys); 381 } 382 } 383 384 static void qedi_free_fp(struct qedi_ctx *qedi) 385 { 386 kfree(qedi->fp_array); 387 kfree(qedi->sb_array); 388 } 389 390 static void qedi_destroy_fp(struct qedi_ctx *qedi) 391 { 392 qedi_free_sb(qedi); 393 qedi_free_fp(qedi); 394 } 395 396 static int qedi_alloc_fp(struct qedi_ctx *qedi) 397 { 398 int ret = 0; 399 400 qedi->fp_array = kcalloc(MIN_NUM_CPUS_MSIX(qedi), 401 sizeof(struct qedi_fastpath), GFP_KERNEL); 402 if (!qedi->fp_array) { 403 QEDI_ERR(&qedi->dbg_ctx, 404 "fastpath fp array allocation failed.\n"); 405 return -ENOMEM; 406 } 407 408 qedi->sb_array = kcalloc(MIN_NUM_CPUS_MSIX(qedi), 409 sizeof(struct qed_sb_info), GFP_KERNEL); 410 if (!qedi->sb_array) { 411 QEDI_ERR(&qedi->dbg_ctx, 412 "fastpath sb array allocation failed.\n"); 413 ret = -ENOMEM; 414 goto free_fp; 415 } 416 417 return ret; 418 419 free_fp: 420 qedi_free_fp(qedi); 421 return ret; 422 } 423 424 static void qedi_int_fp(struct qedi_ctx *qedi) 425 { 426 struct qedi_fastpath *fp; 427 int id; 428 429 memset(qedi->fp_array, 0, MIN_NUM_CPUS_MSIX(qedi) * 430 sizeof(*qedi->fp_array)); 431 memset(qedi->sb_array, 0, MIN_NUM_CPUS_MSIX(qedi) * 432 sizeof(*qedi->sb_array)); 433 434 for (id = 0; id < MIN_NUM_CPUS_MSIX(qedi); id++) { 435 fp = &qedi->fp_array[id]; 436 fp->sb_info = &qedi->sb_array[id]; 437 fp->sb_id = id; 438 fp->qedi = qedi; 439 snprintf(fp->name, sizeof(fp->name), "%s-fp-%d", 440 "qedi", id); 441 442 /* fp_array[i] ---- irq cookie 443 * So init data which is needed in int ctx 444 */ 445 } 446 } 447 448 static int qedi_prepare_fp(struct qedi_ctx *qedi) 449 { 450 struct qedi_fastpath *fp; 451 int id, ret = 0; 452 453 ret = qedi_alloc_fp(qedi); 454 if (ret) 455 goto err; 456 457 qedi_int_fp(qedi); 458 459 for (id = 0; id < MIN_NUM_CPUS_MSIX(qedi); id++) { 460 fp = &qedi->fp_array[id]; 461 ret = qedi_alloc_and_init_sb(qedi, fp->sb_info, fp->sb_id); 462 if (ret) { 463 QEDI_ERR(&qedi->dbg_ctx, 464 "SB allocation and initialization failed.\n"); 465 ret = -EIO; 466 goto err_init; 467 } 468 } 469 470 return 0; 471 472 err_init: 473 qedi_free_sb(qedi); 474 qedi_free_fp(qedi); 475 err: 476 return ret; 477 } 478 479 static int qedi_setup_cid_que(struct qedi_ctx *qedi) 480 { 481 int i; 482 483 qedi->cid_que.cid_que_base = kmalloc_array(qedi->max_active_conns, 484 sizeof(u32), GFP_KERNEL); 485 if (!qedi->cid_que.cid_que_base) 486 return -ENOMEM; 487 488 qedi->cid_que.conn_cid_tbl = kmalloc_array(qedi->max_active_conns, 489 sizeof(struct qedi_conn *), 490 GFP_KERNEL); 491 if (!qedi->cid_que.conn_cid_tbl) { 492 kfree(qedi->cid_que.cid_que_base); 493 qedi->cid_que.cid_que_base = NULL; 494 return -ENOMEM; 495 } 496 497 qedi->cid_que.cid_que = (u32 *)qedi->cid_que.cid_que_base; 498 qedi->cid_que.cid_q_prod_idx = 0; 499 qedi->cid_que.cid_q_cons_idx = 0; 500 qedi->cid_que.cid_q_max_idx = qedi->max_active_conns; 501 qedi->cid_que.cid_free_cnt = qedi->max_active_conns; 502 503 for (i = 0; i < qedi->max_active_conns; i++) { 504 qedi->cid_que.cid_que[i] = i; 505 qedi->cid_que.conn_cid_tbl[i] = NULL; 506 } 507 508 return 0; 509 } 510 511 static void qedi_release_cid_que(struct qedi_ctx *qedi) 512 { 513 kfree(qedi->cid_que.cid_que_base); 514 qedi->cid_que.cid_que_base = NULL; 515 516 kfree(qedi->cid_que.conn_cid_tbl); 517 qedi->cid_que.conn_cid_tbl = NULL; 518 } 519 520 static int qedi_init_id_tbl(struct qedi_portid_tbl *id_tbl, u16 size, 521 u16 start_id, u16 next) 522 { 523 id_tbl->start = start_id; 524 id_tbl->max = size; 525 id_tbl->next = next; 526 spin_lock_init(&id_tbl->lock); 527 id_tbl->table = kcalloc(BITS_TO_LONGS(size), sizeof(long), GFP_KERNEL); 528 if (!id_tbl->table) 529 return -ENOMEM; 530 531 return 0; 532 } 533 534 static void qedi_free_id_tbl(struct qedi_portid_tbl *id_tbl) 535 { 536 kfree(id_tbl->table); 537 id_tbl->table = NULL; 538 } 539 540 int qedi_alloc_id(struct qedi_portid_tbl *id_tbl, u16 id) 541 { 542 int ret = -1; 543 544 id -= id_tbl->start; 545 if (id >= id_tbl->max) 546 return ret; 547 548 spin_lock(&id_tbl->lock); 549 if (!test_bit(id, id_tbl->table)) { 550 set_bit(id, id_tbl->table); 551 ret = 0; 552 } 553 spin_unlock(&id_tbl->lock); 554 return ret; 555 } 556 557 u16 qedi_alloc_new_id(struct qedi_portid_tbl *id_tbl) 558 { 559 u16 id; 560 561 spin_lock(&id_tbl->lock); 562 id = find_next_zero_bit(id_tbl->table, id_tbl->max, id_tbl->next); 563 if (id >= id_tbl->max) { 564 id = QEDI_LOCAL_PORT_INVALID; 565 if (id_tbl->next != 0) { 566 id = find_first_zero_bit(id_tbl->table, id_tbl->next); 567 if (id >= id_tbl->next) 568 id = QEDI_LOCAL_PORT_INVALID; 569 } 570 } 571 572 if (id < id_tbl->max) { 573 set_bit(id, id_tbl->table); 574 id_tbl->next = (id + 1) & (id_tbl->max - 1); 575 id += id_tbl->start; 576 } 577 578 spin_unlock(&id_tbl->lock); 579 580 return id; 581 } 582 583 void qedi_free_id(struct qedi_portid_tbl *id_tbl, u16 id) 584 { 585 if (id == QEDI_LOCAL_PORT_INVALID) 586 return; 587 588 id -= id_tbl->start; 589 if (id >= id_tbl->max) 590 return; 591 592 clear_bit(id, id_tbl->table); 593 } 594 595 static void qedi_cm_free_mem(struct qedi_ctx *qedi) 596 { 597 kfree(qedi->ep_tbl); 598 qedi->ep_tbl = NULL; 599 qedi_free_id_tbl(&qedi->lcl_port_tbl); 600 } 601 602 static int qedi_cm_alloc_mem(struct qedi_ctx *qedi) 603 { 604 u16 port_id; 605 606 qedi->ep_tbl = kzalloc((qedi->max_active_conns * 607 sizeof(struct qedi_endpoint *)), GFP_KERNEL); 608 if (!qedi->ep_tbl) 609 return -ENOMEM; 610 port_id = prandom_u32() % QEDI_LOCAL_PORT_RANGE; 611 if (qedi_init_id_tbl(&qedi->lcl_port_tbl, QEDI_LOCAL_PORT_RANGE, 612 QEDI_LOCAL_PORT_MIN, port_id)) { 613 qedi_cm_free_mem(qedi); 614 return -ENOMEM; 615 } 616 617 return 0; 618 } 619 620 static struct qedi_ctx *qedi_host_alloc(struct pci_dev *pdev) 621 { 622 struct Scsi_Host *shost; 623 struct qedi_ctx *qedi = NULL; 624 625 shost = iscsi_host_alloc(&qedi_host_template, 626 sizeof(struct qedi_ctx), 0); 627 if (!shost) { 628 QEDI_ERR(NULL, "Could not allocate shost\n"); 629 goto exit_setup_shost; 630 } 631 632 shost->max_id = QEDI_MAX_ISCSI_CONNS_PER_HBA; 633 shost->max_channel = 0; 634 shost->max_lun = ~0; 635 shost->max_cmd_len = 16; 636 shost->transportt = qedi_scsi_transport; 637 638 qedi = iscsi_host_priv(shost); 639 memset(qedi, 0, sizeof(*qedi)); 640 qedi->shost = shost; 641 qedi->dbg_ctx.host_no = shost->host_no; 642 qedi->pdev = pdev; 643 qedi->dbg_ctx.pdev = pdev; 644 qedi->max_active_conns = ISCSI_MAX_SESS_PER_HBA; 645 qedi->max_sqes = QEDI_SQ_SIZE; 646 647 if (shost_use_blk_mq(shost)) 648 shost->nr_hw_queues = MIN_NUM_CPUS_MSIX(qedi); 649 650 pci_set_drvdata(pdev, qedi); 651 652 exit_setup_shost: 653 return qedi; 654 } 655 656 static int qedi_ll2_rx(void *cookie, struct sk_buff *skb, u32 arg1, u32 arg2) 657 { 658 struct qedi_ctx *qedi = (struct qedi_ctx *)cookie; 659 struct qedi_uio_dev *udev; 660 struct qedi_uio_ctrl *uctrl; 661 struct skb_work_list *work; 662 u32 prod; 663 664 if (!qedi) { 665 QEDI_ERR(NULL, "qedi is NULL\n"); 666 return -1; 667 } 668 669 if (!test_bit(UIO_DEV_OPENED, &qedi->flags)) { 670 QEDI_INFO(&qedi->dbg_ctx, QEDI_LOG_UIO, 671 "UIO DEV is not opened\n"); 672 kfree_skb(skb); 673 return 0; 674 } 675 676 udev = qedi->udev; 677 uctrl = udev->uctrl; 678 679 work = kzalloc(sizeof(*work), GFP_ATOMIC); 680 if (!work) { 681 QEDI_WARN(&qedi->dbg_ctx, 682 "Could not allocate work so dropping frame.\n"); 683 kfree_skb(skb); 684 return 0; 685 } 686 687 INIT_LIST_HEAD(&work->list); 688 work->skb = skb; 689 690 if (skb_vlan_tag_present(skb)) 691 work->vlan_id = skb_vlan_tag_get(skb); 692 693 if (work->vlan_id) 694 __vlan_insert_tag(work->skb, htons(ETH_P_8021Q), work->vlan_id); 695 696 spin_lock_bh(&qedi->ll2_lock); 697 list_add_tail(&work->list, &qedi->ll2_skb_list); 698 699 ++uctrl->hw_rx_prod_cnt; 700 prod = (uctrl->hw_rx_prod + 1) % RX_RING; 701 if (prod != uctrl->host_rx_cons) { 702 uctrl->hw_rx_prod = prod; 703 spin_unlock_bh(&qedi->ll2_lock); 704 wake_up_process(qedi->ll2_recv_thread); 705 return 0; 706 } 707 708 spin_unlock_bh(&qedi->ll2_lock); 709 return 0; 710 } 711 712 /* map this skb to iscsiuio mmaped region */ 713 static int qedi_ll2_process_skb(struct qedi_ctx *qedi, struct sk_buff *skb, 714 u16 vlan_id) 715 { 716 struct qedi_uio_dev *udev = NULL; 717 struct qedi_uio_ctrl *uctrl = NULL; 718 struct qedi_rx_bd rxbd; 719 struct qedi_rx_bd *p_rxbd; 720 u32 rx_bd_prod; 721 void *pkt; 722 int len = 0; 723 724 if (!qedi) { 725 QEDI_ERR(NULL, "qedi is NULL\n"); 726 return -1; 727 } 728 729 udev = qedi->udev; 730 uctrl = udev->uctrl; 731 pkt = udev->rx_pkt + (uctrl->hw_rx_prod * LL2_SINGLE_BUF_SIZE); 732 len = min_t(u32, skb->len, (u32)LL2_SINGLE_BUF_SIZE); 733 memcpy(pkt, skb->data, len); 734 735 memset(&rxbd, 0, sizeof(rxbd)); 736 rxbd.rx_pkt_index = uctrl->hw_rx_prod; 737 rxbd.rx_pkt_len = len; 738 rxbd.vlan_id = vlan_id; 739 740 uctrl->hw_rx_bd_prod = (uctrl->hw_rx_bd_prod + 1) % QEDI_NUM_RX_BD; 741 rx_bd_prod = uctrl->hw_rx_bd_prod; 742 p_rxbd = (struct qedi_rx_bd *)udev->ll2_ring; 743 p_rxbd += rx_bd_prod; 744 745 memcpy(p_rxbd, &rxbd, sizeof(rxbd)); 746 747 /* notify the iscsiuio about new packet */ 748 uio_event_notify(&udev->qedi_uinfo); 749 750 return 0; 751 } 752 753 static void qedi_ll2_free_skbs(struct qedi_ctx *qedi) 754 { 755 struct skb_work_list *work, *work_tmp; 756 757 spin_lock_bh(&qedi->ll2_lock); 758 list_for_each_entry_safe(work, work_tmp, &qedi->ll2_skb_list, list) { 759 list_del(&work->list); 760 if (work->skb) 761 kfree_skb(work->skb); 762 kfree(work); 763 } 764 spin_unlock_bh(&qedi->ll2_lock); 765 } 766 767 static int qedi_ll2_recv_thread(void *arg) 768 { 769 struct qedi_ctx *qedi = (struct qedi_ctx *)arg; 770 struct skb_work_list *work, *work_tmp; 771 772 set_user_nice(current, -20); 773 774 while (!kthread_should_stop()) { 775 spin_lock_bh(&qedi->ll2_lock); 776 list_for_each_entry_safe(work, work_tmp, &qedi->ll2_skb_list, 777 list) { 778 list_del(&work->list); 779 qedi_ll2_process_skb(qedi, work->skb, work->vlan_id); 780 kfree_skb(work->skb); 781 kfree(work); 782 } 783 set_current_state(TASK_INTERRUPTIBLE); 784 spin_unlock_bh(&qedi->ll2_lock); 785 schedule(); 786 } 787 788 __set_current_state(TASK_RUNNING); 789 return 0; 790 } 791 792 static int qedi_set_iscsi_pf_param(struct qedi_ctx *qedi) 793 { 794 u8 num_sq_pages; 795 u32 log_page_size; 796 int rval = 0; 797 798 799 num_sq_pages = (MAX_OUSTANDING_TASKS_PER_CON * 8) / PAGE_SIZE; 800 801 qedi->num_queues = MIN_NUM_CPUS_MSIX(qedi); 802 803 QEDI_INFO(&qedi->dbg_ctx, QEDI_LOG_INFO, 804 "Number of CQ count is %d\n", qedi->num_queues); 805 806 memset(&qedi->pf_params.iscsi_pf_params, 0, 807 sizeof(qedi->pf_params.iscsi_pf_params)); 808 809 qedi->p_cpuq = pci_alloc_consistent(qedi->pdev, 810 qedi->num_queues * sizeof(struct qedi_glbl_q_params), 811 &qedi->hw_p_cpuq); 812 if (!qedi->p_cpuq) { 813 QEDI_ERR(&qedi->dbg_ctx, "pci_alloc_consistent fail\n"); 814 rval = -1; 815 goto err_alloc_mem; 816 } 817 818 rval = qedi_alloc_global_queues(qedi); 819 if (rval) { 820 QEDI_ERR(&qedi->dbg_ctx, "Global queue allocation failed.\n"); 821 rval = -1; 822 goto err_alloc_mem; 823 } 824 825 qedi->pf_params.iscsi_pf_params.num_cons = QEDI_MAX_ISCSI_CONNS_PER_HBA; 826 qedi->pf_params.iscsi_pf_params.num_tasks = QEDI_MAX_ISCSI_TASK; 827 qedi->pf_params.iscsi_pf_params.half_way_close_timeout = 10; 828 qedi->pf_params.iscsi_pf_params.num_sq_pages_in_ring = num_sq_pages; 829 qedi->pf_params.iscsi_pf_params.num_r2tq_pages_in_ring = num_sq_pages; 830 qedi->pf_params.iscsi_pf_params.num_uhq_pages_in_ring = num_sq_pages; 831 qedi->pf_params.iscsi_pf_params.num_queues = qedi->num_queues; 832 qedi->pf_params.iscsi_pf_params.debug_mode = qedi_fw_debug; 833 qedi->pf_params.iscsi_pf_params.two_msl_timer = 4000; 834 qedi->pf_params.iscsi_pf_params.max_fin_rt = 2; 835 836 for (log_page_size = 0 ; log_page_size < 32 ; log_page_size++) { 837 if ((1 << log_page_size) == PAGE_SIZE) 838 break; 839 } 840 qedi->pf_params.iscsi_pf_params.log_page_size = log_page_size; 841 842 qedi->pf_params.iscsi_pf_params.glbl_q_params_addr = 843 (u64)qedi->hw_p_cpuq; 844 845 /* RQ BDQ initializations. 846 * rq_num_entries: suggested value for Initiator is 16 (4KB RQ) 847 * rqe_log_size: 8 for 256B RQE 848 */ 849 qedi->pf_params.iscsi_pf_params.rqe_log_size = 8; 850 /* BDQ address and size */ 851 qedi->pf_params.iscsi_pf_params.bdq_pbl_base_addr[BDQ_ID_RQ] = 852 qedi->bdq_pbl_list_dma; 853 qedi->pf_params.iscsi_pf_params.bdq_pbl_num_entries[BDQ_ID_RQ] = 854 qedi->bdq_pbl_list_num_entries; 855 qedi->pf_params.iscsi_pf_params.rq_buffer_size = QEDI_BDQ_BUF_SIZE; 856 857 /* cq_num_entries: num_tasks + rq_num_entries */ 858 qedi->pf_params.iscsi_pf_params.cq_num_entries = 2048; 859 860 qedi->pf_params.iscsi_pf_params.gl_rq_pi = QEDI_PROTO_CQ_PROD_IDX; 861 qedi->pf_params.iscsi_pf_params.gl_cmd_pi = 1; 862 863 err_alloc_mem: 864 return rval; 865 } 866 867 /* Free DMA coherent memory for array of queue pointers we pass to qed */ 868 static void qedi_free_iscsi_pf_param(struct qedi_ctx *qedi) 869 { 870 size_t size = 0; 871 872 if (qedi->p_cpuq) { 873 size = qedi->num_queues * sizeof(struct qedi_glbl_q_params); 874 pci_free_consistent(qedi->pdev, size, qedi->p_cpuq, 875 qedi->hw_p_cpuq); 876 } 877 878 qedi_free_global_queues(qedi); 879 880 kfree(qedi->global_queues); 881 } 882 883 static void qedi_get_boot_tgt_info(struct nvm_iscsi_block *block, 884 struct qedi_boot_target *tgt, u8 index) 885 { 886 u32 ipv6_en; 887 888 ipv6_en = !!(block->generic.ctrl_flags & 889 NVM_ISCSI_CFG_GEN_IPV6_ENABLED); 890 891 snprintf(tgt->iscsi_name, sizeof(tgt->iscsi_name), "%s\n", 892 block->target[index].target_name.byte); 893 894 tgt->ipv6_en = ipv6_en; 895 896 if (ipv6_en) 897 snprintf(tgt->ip_addr, IPV6_LEN, "%pI6\n", 898 block->target[index].ipv6_addr.byte); 899 else 900 snprintf(tgt->ip_addr, IPV4_LEN, "%pI4\n", 901 block->target[index].ipv4_addr.byte); 902 } 903 904 static int qedi_find_boot_info(struct qedi_ctx *qedi, 905 struct qed_mfw_tlv_iscsi *iscsi, 906 struct nvm_iscsi_block *block) 907 { 908 struct qedi_boot_target *pri_tgt = NULL, *sec_tgt = NULL; 909 u32 pri_ctrl_flags = 0, sec_ctrl_flags = 0, found = 0; 910 struct iscsi_cls_session *cls_sess; 911 struct iscsi_cls_conn *cls_conn; 912 struct qedi_conn *qedi_conn; 913 struct iscsi_session *sess; 914 struct iscsi_conn *conn; 915 char ep_ip_addr[64]; 916 int i, ret = 0; 917 918 pri_ctrl_flags = !!(block->target[0].ctrl_flags & 919 NVM_ISCSI_CFG_TARGET_ENABLED); 920 if (pri_ctrl_flags) { 921 pri_tgt = kzalloc(sizeof(*pri_tgt), GFP_KERNEL); 922 if (!pri_tgt) 923 return -1; 924 qedi_get_boot_tgt_info(block, pri_tgt, 0); 925 } 926 927 sec_ctrl_flags = !!(block->target[1].ctrl_flags & 928 NVM_ISCSI_CFG_TARGET_ENABLED); 929 if (sec_ctrl_flags) { 930 sec_tgt = kzalloc(sizeof(*sec_tgt), GFP_KERNEL); 931 if (!sec_tgt) { 932 ret = -1; 933 goto free_tgt; 934 } 935 qedi_get_boot_tgt_info(block, sec_tgt, 1); 936 } 937 938 for (i = 0; i < qedi->max_active_conns; i++) { 939 qedi_conn = qedi_get_conn_from_id(qedi, i); 940 if (!qedi_conn) 941 continue; 942 943 if (qedi_conn->ep->ip_type == TCP_IPV4) 944 snprintf(ep_ip_addr, IPV4_LEN, "%pI4\n", 945 qedi_conn->ep->dst_addr); 946 else 947 snprintf(ep_ip_addr, IPV6_LEN, "%pI6\n", 948 qedi_conn->ep->dst_addr); 949 950 cls_conn = qedi_conn->cls_conn; 951 conn = cls_conn->dd_data; 952 cls_sess = iscsi_conn_to_session(cls_conn); 953 sess = cls_sess->dd_data; 954 955 if (pri_ctrl_flags) { 956 if (!strcmp(pri_tgt->iscsi_name, sess->targetname) && 957 !strcmp(pri_tgt->ip_addr, ep_ip_addr)) { 958 found = 1; 959 break; 960 } 961 } 962 963 if (sec_ctrl_flags) { 964 if (!strcmp(sec_tgt->iscsi_name, sess->targetname) && 965 !strcmp(sec_tgt->ip_addr, ep_ip_addr)) { 966 found = 1; 967 break; 968 } 969 } 970 } 971 972 if (found) { 973 if (conn->hdrdgst_en) { 974 iscsi->header_digest_set = true; 975 iscsi->header_digest = 1; 976 } 977 978 if (conn->datadgst_en) { 979 iscsi->data_digest_set = true; 980 iscsi->data_digest = 1; 981 } 982 iscsi->boot_taget_portal_set = true; 983 iscsi->boot_taget_portal = sess->tpgt; 984 985 } else { 986 ret = -1; 987 } 988 989 if (sec_ctrl_flags) 990 kfree(sec_tgt); 991 free_tgt: 992 if (pri_ctrl_flags) 993 kfree(pri_tgt); 994 995 return ret; 996 } 997 998 static void qedi_get_generic_tlv_data(void *dev, struct qed_generic_tlvs *data) 999 { 1000 struct qedi_ctx *qedi; 1001 1002 if (!dev) { 1003 QEDI_INFO(NULL, QEDI_LOG_EVT, 1004 "dev is NULL so ignoring get_generic_tlv_data request.\n"); 1005 return; 1006 } 1007 qedi = (struct qedi_ctx *)dev; 1008 1009 memset(data, 0, sizeof(struct qed_generic_tlvs)); 1010 ether_addr_copy(data->mac[0], qedi->mac); 1011 } 1012 1013 /* 1014 * Protocol TLV handler 1015 */ 1016 static void qedi_get_protocol_tlv_data(void *dev, void *data) 1017 { 1018 struct qed_mfw_tlv_iscsi *iscsi = data; 1019 struct qed_iscsi_stats *fw_iscsi_stats; 1020 struct nvm_iscsi_block *block = NULL; 1021 u32 chap_en = 0, mchap_en = 0; 1022 struct qedi_ctx *qedi = dev; 1023 int rval = 0; 1024 1025 fw_iscsi_stats = kmalloc(sizeof(*fw_iscsi_stats), GFP_KERNEL); 1026 if (!fw_iscsi_stats) { 1027 QEDI_ERR(&qedi->dbg_ctx, 1028 "Could not allocate memory for fw_iscsi_stats.\n"); 1029 goto exit_get_data; 1030 } 1031 1032 mutex_lock(&qedi->stats_lock); 1033 /* Query firmware for offload stats */ 1034 qedi_ops->get_stats(qedi->cdev, fw_iscsi_stats); 1035 mutex_unlock(&qedi->stats_lock); 1036 1037 iscsi->rx_frames_set = true; 1038 iscsi->rx_frames = fw_iscsi_stats->iscsi_rx_packet_cnt; 1039 iscsi->rx_bytes_set = true; 1040 iscsi->rx_bytes = fw_iscsi_stats->iscsi_rx_bytes_cnt; 1041 iscsi->tx_frames_set = true; 1042 iscsi->tx_frames = fw_iscsi_stats->iscsi_tx_packet_cnt; 1043 iscsi->tx_bytes_set = true; 1044 iscsi->tx_bytes = fw_iscsi_stats->iscsi_tx_bytes_cnt; 1045 iscsi->frame_size_set = true; 1046 iscsi->frame_size = qedi->ll2_mtu; 1047 block = qedi_get_nvram_block(qedi); 1048 if (block) { 1049 chap_en = !!(block->generic.ctrl_flags & 1050 NVM_ISCSI_CFG_GEN_CHAP_ENABLED); 1051 mchap_en = !!(block->generic.ctrl_flags & 1052 NVM_ISCSI_CFG_GEN_CHAP_MUTUAL_ENABLED); 1053 1054 iscsi->auth_method_set = (chap_en || mchap_en) ? true : false; 1055 iscsi->auth_method = 1; 1056 if (chap_en) 1057 iscsi->auth_method = 2; 1058 if (mchap_en) 1059 iscsi->auth_method = 3; 1060 1061 iscsi->tx_desc_size_set = true; 1062 iscsi->tx_desc_size = QEDI_SQ_SIZE; 1063 iscsi->rx_desc_size_set = true; 1064 iscsi->rx_desc_size = QEDI_CQ_SIZE; 1065 1066 /* tpgt, hdr digest, data digest */ 1067 rval = qedi_find_boot_info(qedi, iscsi, block); 1068 if (rval) 1069 QEDI_INFO(&qedi->dbg_ctx, QEDI_LOG_INFO, 1070 "Boot target not set"); 1071 } 1072 1073 kfree(fw_iscsi_stats); 1074 exit_get_data: 1075 return; 1076 } 1077 1078 static void qedi_link_update(void *dev, struct qed_link_output *link) 1079 { 1080 struct qedi_ctx *qedi = (struct qedi_ctx *)dev; 1081 1082 if (link->link_up) { 1083 QEDI_INFO(&qedi->dbg_ctx, QEDI_LOG_INFO, "Link Up event.\n"); 1084 atomic_set(&qedi->link_state, QEDI_LINK_UP); 1085 } else { 1086 QEDI_INFO(&qedi->dbg_ctx, QEDI_LOG_INFO, 1087 "Link Down event.\n"); 1088 atomic_set(&qedi->link_state, QEDI_LINK_DOWN); 1089 } 1090 } 1091 1092 static struct qed_iscsi_cb_ops qedi_cb_ops = { 1093 { 1094 .link_update = qedi_link_update, 1095 .get_protocol_tlv_data = qedi_get_protocol_tlv_data, 1096 .get_generic_tlv_data = qedi_get_generic_tlv_data, 1097 } 1098 }; 1099 1100 static int qedi_queue_cqe(struct qedi_ctx *qedi, union iscsi_cqe *cqe, 1101 u16 que_idx, struct qedi_percpu_s *p) 1102 { 1103 struct qedi_work *qedi_work; 1104 struct qedi_conn *q_conn; 1105 struct iscsi_conn *conn; 1106 struct qedi_cmd *qedi_cmd; 1107 u32 iscsi_cid; 1108 int rc = 0; 1109 1110 iscsi_cid = cqe->cqe_common.conn_id; 1111 q_conn = qedi->cid_que.conn_cid_tbl[iscsi_cid]; 1112 if (!q_conn) { 1113 QEDI_WARN(&qedi->dbg_ctx, 1114 "Session no longer exists for cid=0x%x!!\n", 1115 iscsi_cid); 1116 return -1; 1117 } 1118 conn = q_conn->cls_conn->dd_data; 1119 1120 switch (cqe->cqe_common.cqe_type) { 1121 case ISCSI_CQE_TYPE_SOLICITED: 1122 case ISCSI_CQE_TYPE_SOLICITED_WITH_SENSE: 1123 qedi_cmd = qedi_get_cmd_from_tid(qedi, cqe->cqe_solicited.itid); 1124 if (!qedi_cmd) { 1125 rc = -1; 1126 break; 1127 } 1128 INIT_LIST_HEAD(&qedi_cmd->cqe_work.list); 1129 qedi_cmd->cqe_work.qedi = qedi; 1130 memcpy(&qedi_cmd->cqe_work.cqe, cqe, sizeof(union iscsi_cqe)); 1131 qedi_cmd->cqe_work.que_idx = que_idx; 1132 qedi_cmd->cqe_work.is_solicited = true; 1133 list_add_tail(&qedi_cmd->cqe_work.list, &p->work_list); 1134 break; 1135 case ISCSI_CQE_TYPE_UNSOLICITED: 1136 case ISCSI_CQE_TYPE_DUMMY: 1137 case ISCSI_CQE_TYPE_TASK_CLEANUP: 1138 qedi_work = kzalloc(sizeof(*qedi_work), GFP_ATOMIC); 1139 if (!qedi_work) { 1140 rc = -1; 1141 break; 1142 } 1143 INIT_LIST_HEAD(&qedi_work->list); 1144 qedi_work->qedi = qedi; 1145 memcpy(&qedi_work->cqe, cqe, sizeof(union iscsi_cqe)); 1146 qedi_work->que_idx = que_idx; 1147 qedi_work->is_solicited = false; 1148 list_add_tail(&qedi_work->list, &p->work_list); 1149 break; 1150 default: 1151 rc = -1; 1152 QEDI_ERR(&qedi->dbg_ctx, "FW Error cqe.\n"); 1153 } 1154 return rc; 1155 } 1156 1157 static bool qedi_process_completions(struct qedi_fastpath *fp) 1158 { 1159 struct qedi_ctx *qedi = fp->qedi; 1160 struct qed_sb_info *sb_info = fp->sb_info; 1161 struct status_block_e4 *sb = sb_info->sb_virt; 1162 struct qedi_percpu_s *p = NULL; 1163 struct global_queue *que; 1164 u16 prod_idx; 1165 unsigned long flags; 1166 union iscsi_cqe *cqe; 1167 int cpu; 1168 int ret; 1169 1170 /* Get the current firmware producer index */ 1171 prod_idx = sb->pi_array[QEDI_PROTO_CQ_PROD_IDX]; 1172 1173 if (prod_idx >= QEDI_CQ_SIZE) 1174 prod_idx = prod_idx % QEDI_CQ_SIZE; 1175 1176 que = qedi->global_queues[fp->sb_id]; 1177 QEDI_INFO(&qedi->dbg_ctx, QEDI_LOG_IO, 1178 "Before: global queue=%p prod_idx=%d cons_idx=%d, sb_id=%d\n", 1179 que, prod_idx, que->cq_cons_idx, fp->sb_id); 1180 1181 qedi->intr_cpu = fp->sb_id; 1182 cpu = smp_processor_id(); 1183 p = &per_cpu(qedi_percpu, cpu); 1184 1185 if (unlikely(!p->iothread)) 1186 WARN_ON(1); 1187 1188 spin_lock_irqsave(&p->p_work_lock, flags); 1189 while (que->cq_cons_idx != prod_idx) { 1190 cqe = &que->cq[que->cq_cons_idx]; 1191 1192 QEDI_INFO(&qedi->dbg_ctx, QEDI_LOG_IO, 1193 "cqe=%p prod_idx=%d cons_idx=%d.\n", 1194 cqe, prod_idx, que->cq_cons_idx); 1195 1196 ret = qedi_queue_cqe(qedi, cqe, fp->sb_id, p); 1197 if (ret) 1198 QEDI_WARN(&qedi->dbg_ctx, 1199 "Dropping CQE 0x%x for cid=0x%x.\n", 1200 que->cq_cons_idx, cqe->cqe_common.conn_id); 1201 1202 que->cq_cons_idx++; 1203 if (que->cq_cons_idx == QEDI_CQ_SIZE) 1204 que->cq_cons_idx = 0; 1205 } 1206 wake_up_process(p->iothread); 1207 spin_unlock_irqrestore(&p->p_work_lock, flags); 1208 1209 return true; 1210 } 1211 1212 static bool qedi_fp_has_work(struct qedi_fastpath *fp) 1213 { 1214 struct qedi_ctx *qedi = fp->qedi; 1215 struct global_queue *que; 1216 struct qed_sb_info *sb_info = fp->sb_info; 1217 struct status_block_e4 *sb = sb_info->sb_virt; 1218 u16 prod_idx; 1219 1220 barrier(); 1221 1222 /* Get the current firmware producer index */ 1223 prod_idx = sb->pi_array[QEDI_PROTO_CQ_PROD_IDX]; 1224 1225 /* Get the pointer to the global CQ this completion is on */ 1226 que = qedi->global_queues[fp->sb_id]; 1227 1228 /* prod idx wrap around uint16 */ 1229 if (prod_idx >= QEDI_CQ_SIZE) 1230 prod_idx = prod_idx % QEDI_CQ_SIZE; 1231 1232 return (que->cq_cons_idx != prod_idx); 1233 } 1234 1235 /* MSI-X fastpath handler code */ 1236 static irqreturn_t qedi_msix_handler(int irq, void *dev_id) 1237 { 1238 struct qedi_fastpath *fp = dev_id; 1239 struct qedi_ctx *qedi = fp->qedi; 1240 bool wake_io_thread = true; 1241 1242 qed_sb_ack(fp->sb_info, IGU_INT_DISABLE, 0); 1243 1244 process_again: 1245 wake_io_thread = qedi_process_completions(fp); 1246 if (wake_io_thread) { 1247 QEDI_INFO(&qedi->dbg_ctx, QEDI_LOG_DISC, 1248 "process already running\n"); 1249 } 1250 1251 if (qedi_fp_has_work(fp) == 0) 1252 qed_sb_update_sb_idx(fp->sb_info); 1253 1254 /* Check for more work */ 1255 rmb(); 1256 1257 if (qedi_fp_has_work(fp) == 0) 1258 qed_sb_ack(fp->sb_info, IGU_INT_ENABLE, 1); 1259 else 1260 goto process_again; 1261 1262 return IRQ_HANDLED; 1263 } 1264 1265 /* simd handler for MSI/INTa */ 1266 static void qedi_simd_int_handler(void *cookie) 1267 { 1268 /* Cookie is qedi_ctx struct */ 1269 struct qedi_ctx *qedi = (struct qedi_ctx *)cookie; 1270 1271 QEDI_WARN(&qedi->dbg_ctx, "qedi=%p.\n", qedi); 1272 } 1273 1274 #define QEDI_SIMD_HANDLER_NUM 0 1275 static void qedi_sync_free_irqs(struct qedi_ctx *qedi) 1276 { 1277 int i; 1278 1279 if (qedi->int_info.msix_cnt) { 1280 for (i = 0; i < qedi->int_info.used_cnt; i++) { 1281 synchronize_irq(qedi->int_info.msix[i].vector); 1282 irq_set_affinity_hint(qedi->int_info.msix[i].vector, 1283 NULL); 1284 free_irq(qedi->int_info.msix[i].vector, 1285 &qedi->fp_array[i]); 1286 } 1287 } else { 1288 qedi_ops->common->simd_handler_clean(qedi->cdev, 1289 QEDI_SIMD_HANDLER_NUM); 1290 } 1291 1292 qedi->int_info.used_cnt = 0; 1293 qedi_ops->common->set_fp_int(qedi->cdev, 0); 1294 } 1295 1296 static int qedi_request_msix_irq(struct qedi_ctx *qedi) 1297 { 1298 int i, rc, cpu; 1299 1300 cpu = cpumask_first(cpu_online_mask); 1301 for (i = 0; i < MIN_NUM_CPUS_MSIX(qedi); i++) { 1302 rc = request_irq(qedi->int_info.msix[i].vector, 1303 qedi_msix_handler, 0, "qedi", 1304 &qedi->fp_array[i]); 1305 1306 if (rc) { 1307 QEDI_WARN(&qedi->dbg_ctx, "request_irq failed.\n"); 1308 qedi_sync_free_irqs(qedi); 1309 return rc; 1310 } 1311 qedi->int_info.used_cnt++; 1312 rc = irq_set_affinity_hint(qedi->int_info.msix[i].vector, 1313 get_cpu_mask(cpu)); 1314 cpu = cpumask_next(cpu, cpu_online_mask); 1315 } 1316 1317 return 0; 1318 } 1319 1320 static int qedi_setup_int(struct qedi_ctx *qedi) 1321 { 1322 int rc = 0; 1323 1324 rc = qedi_ops->common->set_fp_int(qedi->cdev, num_online_cpus()); 1325 rc = qedi_ops->common->get_fp_int(qedi->cdev, &qedi->int_info); 1326 if (rc) 1327 goto exit_setup_int; 1328 1329 QEDI_INFO(&qedi->dbg_ctx, QEDI_LOG_DISC, 1330 "Number of msix_cnt = 0x%x num of cpus = 0x%x\n", 1331 qedi->int_info.msix_cnt, num_online_cpus()); 1332 1333 if (qedi->int_info.msix_cnt) { 1334 rc = qedi_request_msix_irq(qedi); 1335 goto exit_setup_int; 1336 } else { 1337 qedi_ops->common->simd_handler_config(qedi->cdev, &qedi, 1338 QEDI_SIMD_HANDLER_NUM, 1339 qedi_simd_int_handler); 1340 qedi->int_info.used_cnt = 1; 1341 } 1342 1343 exit_setup_int: 1344 return rc; 1345 } 1346 1347 static void qedi_free_nvm_iscsi_cfg(struct qedi_ctx *qedi) 1348 { 1349 if (qedi->iscsi_cfg) 1350 dma_free_coherent(&qedi->pdev->dev, 1351 sizeof(struct nvm_iscsi_cfg), 1352 qedi->iscsi_cfg, qedi->nvm_buf_dma); 1353 } 1354 1355 static int qedi_alloc_nvm_iscsi_cfg(struct qedi_ctx *qedi) 1356 { 1357 qedi->iscsi_cfg = dma_zalloc_coherent(&qedi->pdev->dev, 1358 sizeof(struct nvm_iscsi_cfg), 1359 &qedi->nvm_buf_dma, GFP_KERNEL); 1360 if (!qedi->iscsi_cfg) { 1361 QEDI_ERR(&qedi->dbg_ctx, "Could not allocate NVM BUF.\n"); 1362 return -ENOMEM; 1363 } 1364 QEDI_INFO(&qedi->dbg_ctx, QEDI_LOG_INFO, 1365 "NVM BUF addr=0x%p dma=0x%llx.\n", qedi->iscsi_cfg, 1366 qedi->nvm_buf_dma); 1367 1368 return 0; 1369 } 1370 1371 static void qedi_free_bdq(struct qedi_ctx *qedi) 1372 { 1373 int i; 1374 1375 if (qedi->bdq_pbl_list) 1376 dma_free_coherent(&qedi->pdev->dev, PAGE_SIZE, 1377 qedi->bdq_pbl_list, qedi->bdq_pbl_list_dma); 1378 1379 if (qedi->bdq_pbl) 1380 dma_free_coherent(&qedi->pdev->dev, qedi->bdq_pbl_mem_size, 1381 qedi->bdq_pbl, qedi->bdq_pbl_dma); 1382 1383 for (i = 0; i < QEDI_BDQ_NUM; i++) { 1384 if (qedi->bdq[i].buf_addr) { 1385 dma_free_coherent(&qedi->pdev->dev, QEDI_BDQ_BUF_SIZE, 1386 qedi->bdq[i].buf_addr, 1387 qedi->bdq[i].buf_dma); 1388 } 1389 } 1390 } 1391 1392 static void qedi_free_global_queues(struct qedi_ctx *qedi) 1393 { 1394 int i; 1395 struct global_queue **gl = qedi->global_queues; 1396 1397 for (i = 0; i < qedi->num_queues; i++) { 1398 if (!gl[i]) 1399 continue; 1400 1401 if (gl[i]->cq) 1402 dma_free_coherent(&qedi->pdev->dev, gl[i]->cq_mem_size, 1403 gl[i]->cq, gl[i]->cq_dma); 1404 if (gl[i]->cq_pbl) 1405 dma_free_coherent(&qedi->pdev->dev, gl[i]->cq_pbl_size, 1406 gl[i]->cq_pbl, gl[i]->cq_pbl_dma); 1407 1408 kfree(gl[i]); 1409 } 1410 qedi_free_bdq(qedi); 1411 qedi_free_nvm_iscsi_cfg(qedi); 1412 } 1413 1414 static int qedi_alloc_bdq(struct qedi_ctx *qedi) 1415 { 1416 int i; 1417 struct scsi_bd *pbl; 1418 u64 *list; 1419 dma_addr_t page; 1420 1421 /* Alloc dma memory for BDQ buffers */ 1422 for (i = 0; i < QEDI_BDQ_NUM; i++) { 1423 qedi->bdq[i].buf_addr = 1424 dma_alloc_coherent(&qedi->pdev->dev, 1425 QEDI_BDQ_BUF_SIZE, 1426 &qedi->bdq[i].buf_dma, 1427 GFP_KERNEL); 1428 if (!qedi->bdq[i].buf_addr) { 1429 QEDI_ERR(&qedi->dbg_ctx, 1430 "Could not allocate BDQ buffer %d.\n", i); 1431 return -ENOMEM; 1432 } 1433 } 1434 1435 /* Alloc dma memory for BDQ page buffer list */ 1436 qedi->bdq_pbl_mem_size = QEDI_BDQ_NUM * sizeof(struct scsi_bd); 1437 qedi->bdq_pbl_mem_size = ALIGN(qedi->bdq_pbl_mem_size, PAGE_SIZE); 1438 qedi->rq_num_entries = qedi->bdq_pbl_mem_size / sizeof(struct scsi_bd); 1439 1440 QEDI_INFO(&qedi->dbg_ctx, QEDI_LOG_CONN, "rq_num_entries = %d.\n", 1441 qedi->rq_num_entries); 1442 1443 qedi->bdq_pbl = dma_alloc_coherent(&qedi->pdev->dev, 1444 qedi->bdq_pbl_mem_size, 1445 &qedi->bdq_pbl_dma, GFP_KERNEL); 1446 if (!qedi->bdq_pbl) { 1447 QEDI_ERR(&qedi->dbg_ctx, "Could not allocate BDQ PBL.\n"); 1448 return -ENOMEM; 1449 } 1450 1451 /* 1452 * Populate BDQ PBL with physical and virtual address of individual 1453 * BDQ buffers 1454 */ 1455 pbl = (struct scsi_bd *)qedi->bdq_pbl; 1456 for (i = 0; i < QEDI_BDQ_NUM; i++) { 1457 pbl->address.hi = 1458 cpu_to_le32(QEDI_U64_HI(qedi->bdq[i].buf_dma)); 1459 pbl->address.lo = 1460 cpu_to_le32(QEDI_U64_LO(qedi->bdq[i].buf_dma)); 1461 QEDI_INFO(&qedi->dbg_ctx, QEDI_LOG_CONN, 1462 "pbl [0x%p] pbl->address hi [0x%llx] lo [0x%llx], idx [%d]\n", 1463 pbl, pbl->address.hi, pbl->address.lo, i); 1464 pbl->opaque.iscsi_opaque.reserved_zero[0] = 0; 1465 pbl->opaque.iscsi_opaque.reserved_zero[1] = 0; 1466 pbl->opaque.iscsi_opaque.reserved_zero[2] = 0; 1467 pbl->opaque.iscsi_opaque.opaque = cpu_to_le16(i); 1468 pbl++; 1469 } 1470 1471 /* Allocate list of PBL pages */ 1472 qedi->bdq_pbl_list = dma_zalloc_coherent(&qedi->pdev->dev, PAGE_SIZE, 1473 &qedi->bdq_pbl_list_dma, 1474 GFP_KERNEL); 1475 if (!qedi->bdq_pbl_list) { 1476 QEDI_ERR(&qedi->dbg_ctx, 1477 "Could not allocate list of PBL pages.\n"); 1478 return -ENOMEM; 1479 } 1480 1481 /* 1482 * Now populate PBL list with pages that contain pointers to the 1483 * individual buffers. 1484 */ 1485 qedi->bdq_pbl_list_num_entries = qedi->bdq_pbl_mem_size / PAGE_SIZE; 1486 list = (u64 *)qedi->bdq_pbl_list; 1487 page = qedi->bdq_pbl_list_dma; 1488 for (i = 0; i < qedi->bdq_pbl_list_num_entries; i++) { 1489 *list = qedi->bdq_pbl_dma; 1490 list++; 1491 page += PAGE_SIZE; 1492 } 1493 1494 return 0; 1495 } 1496 1497 static int qedi_alloc_global_queues(struct qedi_ctx *qedi) 1498 { 1499 u32 *list; 1500 int i; 1501 int status = 0, rc; 1502 u32 *pbl; 1503 dma_addr_t page; 1504 int num_pages; 1505 1506 /* 1507 * Number of global queues (CQ / RQ). This should 1508 * be <= number of available MSIX vectors for the PF 1509 */ 1510 if (!qedi->num_queues) { 1511 QEDI_ERR(&qedi->dbg_ctx, "No MSI-X vectors available!\n"); 1512 return 1; 1513 } 1514 1515 /* Make sure we allocated the PBL that will contain the physical 1516 * addresses of our queues 1517 */ 1518 if (!qedi->p_cpuq) { 1519 status = 1; 1520 goto mem_alloc_failure; 1521 } 1522 1523 qedi->global_queues = kzalloc((sizeof(struct global_queue *) * 1524 qedi->num_queues), GFP_KERNEL); 1525 if (!qedi->global_queues) { 1526 QEDI_ERR(&qedi->dbg_ctx, 1527 "Unable to allocate global queues array ptr memory\n"); 1528 return -ENOMEM; 1529 } 1530 QEDI_INFO(&qedi->dbg_ctx, QEDI_LOG_DISC, 1531 "qedi->global_queues=%p.\n", qedi->global_queues); 1532 1533 /* Allocate DMA coherent buffers for BDQ */ 1534 rc = qedi_alloc_bdq(qedi); 1535 if (rc) 1536 goto mem_alloc_failure; 1537 1538 /* Allocate DMA coherent buffers for NVM_ISCSI_CFG */ 1539 rc = qedi_alloc_nvm_iscsi_cfg(qedi); 1540 if (rc) 1541 goto mem_alloc_failure; 1542 1543 /* Allocate a CQ and an associated PBL for each MSI-X 1544 * vector. 1545 */ 1546 for (i = 0; i < qedi->num_queues; i++) { 1547 qedi->global_queues[i] = 1548 kzalloc(sizeof(*qedi->global_queues[0]), 1549 GFP_KERNEL); 1550 if (!qedi->global_queues[i]) { 1551 QEDI_ERR(&qedi->dbg_ctx, 1552 "Unable to allocation global queue %d.\n", i); 1553 goto mem_alloc_failure; 1554 } 1555 1556 qedi->global_queues[i]->cq_mem_size = 1557 (QEDI_CQ_SIZE + 8) * sizeof(union iscsi_cqe); 1558 qedi->global_queues[i]->cq_mem_size = 1559 (qedi->global_queues[i]->cq_mem_size + 1560 (QEDI_PAGE_SIZE - 1)); 1561 1562 qedi->global_queues[i]->cq_pbl_size = 1563 (qedi->global_queues[i]->cq_mem_size / 1564 QEDI_PAGE_SIZE) * sizeof(void *); 1565 qedi->global_queues[i]->cq_pbl_size = 1566 (qedi->global_queues[i]->cq_pbl_size + 1567 (QEDI_PAGE_SIZE - 1)); 1568 1569 qedi->global_queues[i]->cq = dma_zalloc_coherent(&qedi->pdev->dev, 1570 qedi->global_queues[i]->cq_mem_size, 1571 &qedi->global_queues[i]->cq_dma, 1572 GFP_KERNEL); 1573 1574 if (!qedi->global_queues[i]->cq) { 1575 QEDI_WARN(&qedi->dbg_ctx, 1576 "Could not allocate cq.\n"); 1577 status = -ENOMEM; 1578 goto mem_alloc_failure; 1579 } 1580 qedi->global_queues[i]->cq_pbl = dma_zalloc_coherent(&qedi->pdev->dev, 1581 qedi->global_queues[i]->cq_pbl_size, 1582 &qedi->global_queues[i]->cq_pbl_dma, 1583 GFP_KERNEL); 1584 1585 if (!qedi->global_queues[i]->cq_pbl) { 1586 QEDI_WARN(&qedi->dbg_ctx, 1587 "Could not allocate cq PBL.\n"); 1588 status = -ENOMEM; 1589 goto mem_alloc_failure; 1590 } 1591 1592 /* Create PBL */ 1593 num_pages = qedi->global_queues[i]->cq_mem_size / 1594 QEDI_PAGE_SIZE; 1595 page = qedi->global_queues[i]->cq_dma; 1596 pbl = (u32 *)qedi->global_queues[i]->cq_pbl; 1597 1598 while (num_pages--) { 1599 *pbl = (u32)page; 1600 pbl++; 1601 *pbl = (u32)((u64)page >> 32); 1602 pbl++; 1603 page += QEDI_PAGE_SIZE; 1604 } 1605 } 1606 1607 list = (u32 *)qedi->p_cpuq; 1608 1609 /* 1610 * The list is built as follows: CQ#0 PBL pointer, RQ#0 PBL pointer, 1611 * CQ#1 PBL pointer, RQ#1 PBL pointer, etc. Each PBL pointer points 1612 * to the physical address which contains an array of pointers to the 1613 * physical addresses of the specific queue pages. 1614 */ 1615 for (i = 0; i < qedi->num_queues; i++) { 1616 *list = (u32)qedi->global_queues[i]->cq_pbl_dma; 1617 list++; 1618 *list = (u32)((u64)qedi->global_queues[i]->cq_pbl_dma >> 32); 1619 list++; 1620 1621 *list = (u32)0; 1622 list++; 1623 *list = (u32)((u64)0 >> 32); 1624 list++; 1625 } 1626 1627 return 0; 1628 1629 mem_alloc_failure: 1630 qedi_free_global_queues(qedi); 1631 return status; 1632 } 1633 1634 int qedi_alloc_sq(struct qedi_ctx *qedi, struct qedi_endpoint *ep) 1635 { 1636 int rval = 0; 1637 u32 *pbl; 1638 dma_addr_t page; 1639 int num_pages; 1640 1641 if (!ep) 1642 return -EIO; 1643 1644 /* Calculate appropriate queue and PBL sizes */ 1645 ep->sq_mem_size = QEDI_SQ_SIZE * sizeof(struct iscsi_wqe); 1646 ep->sq_mem_size += QEDI_PAGE_SIZE - 1; 1647 1648 ep->sq_pbl_size = (ep->sq_mem_size / QEDI_PAGE_SIZE) * sizeof(void *); 1649 ep->sq_pbl_size = ep->sq_pbl_size + QEDI_PAGE_SIZE; 1650 1651 ep->sq = dma_zalloc_coherent(&qedi->pdev->dev, ep->sq_mem_size, 1652 &ep->sq_dma, GFP_KERNEL); 1653 if (!ep->sq) { 1654 QEDI_WARN(&qedi->dbg_ctx, 1655 "Could not allocate send queue.\n"); 1656 rval = -ENOMEM; 1657 goto out; 1658 } 1659 ep->sq_pbl = dma_zalloc_coherent(&qedi->pdev->dev, ep->sq_pbl_size, 1660 &ep->sq_pbl_dma, GFP_KERNEL); 1661 if (!ep->sq_pbl) { 1662 QEDI_WARN(&qedi->dbg_ctx, 1663 "Could not allocate send queue PBL.\n"); 1664 rval = -ENOMEM; 1665 goto out_free_sq; 1666 } 1667 1668 /* Create PBL */ 1669 num_pages = ep->sq_mem_size / QEDI_PAGE_SIZE; 1670 page = ep->sq_dma; 1671 pbl = (u32 *)ep->sq_pbl; 1672 1673 while (num_pages--) { 1674 *pbl = (u32)page; 1675 pbl++; 1676 *pbl = (u32)((u64)page >> 32); 1677 pbl++; 1678 page += QEDI_PAGE_SIZE; 1679 } 1680 1681 return rval; 1682 1683 out_free_sq: 1684 dma_free_coherent(&qedi->pdev->dev, ep->sq_mem_size, ep->sq, 1685 ep->sq_dma); 1686 out: 1687 return rval; 1688 } 1689 1690 void qedi_free_sq(struct qedi_ctx *qedi, struct qedi_endpoint *ep) 1691 { 1692 if (ep->sq_pbl) 1693 dma_free_coherent(&qedi->pdev->dev, ep->sq_pbl_size, ep->sq_pbl, 1694 ep->sq_pbl_dma); 1695 if (ep->sq) 1696 dma_free_coherent(&qedi->pdev->dev, ep->sq_mem_size, ep->sq, 1697 ep->sq_dma); 1698 } 1699 1700 int qedi_get_task_idx(struct qedi_ctx *qedi) 1701 { 1702 s16 tmp_idx; 1703 1704 again: 1705 tmp_idx = find_first_zero_bit(qedi->task_idx_map, 1706 MAX_ISCSI_TASK_ENTRIES); 1707 1708 if (tmp_idx >= MAX_ISCSI_TASK_ENTRIES) { 1709 QEDI_ERR(&qedi->dbg_ctx, "FW task context pool is full.\n"); 1710 tmp_idx = -1; 1711 goto err_idx; 1712 } 1713 1714 if (test_and_set_bit(tmp_idx, qedi->task_idx_map)) 1715 goto again; 1716 1717 err_idx: 1718 return tmp_idx; 1719 } 1720 1721 void qedi_clear_task_idx(struct qedi_ctx *qedi, int idx) 1722 { 1723 if (!test_and_clear_bit(idx, qedi->task_idx_map)) 1724 QEDI_ERR(&qedi->dbg_ctx, 1725 "FW task context, already cleared, tid=0x%x\n", idx); 1726 } 1727 1728 void qedi_update_itt_map(struct qedi_ctx *qedi, u32 tid, u32 proto_itt, 1729 struct qedi_cmd *cmd) 1730 { 1731 qedi->itt_map[tid].itt = proto_itt; 1732 qedi->itt_map[tid].p_cmd = cmd; 1733 1734 QEDI_INFO(&qedi->dbg_ctx, QEDI_LOG_CONN, 1735 "update itt map tid=0x%x, with proto itt=0x%x\n", tid, 1736 qedi->itt_map[tid].itt); 1737 } 1738 1739 void qedi_get_task_tid(struct qedi_ctx *qedi, u32 itt, s16 *tid) 1740 { 1741 u16 i; 1742 1743 for (i = 0; i < MAX_ISCSI_TASK_ENTRIES; i++) { 1744 if (qedi->itt_map[i].itt == itt) { 1745 *tid = i; 1746 QEDI_INFO(&qedi->dbg_ctx, QEDI_LOG_CONN, 1747 "Ref itt=0x%x, found at tid=0x%x\n", 1748 itt, *tid); 1749 return; 1750 } 1751 } 1752 1753 WARN_ON(1); 1754 } 1755 1756 void qedi_get_proto_itt(struct qedi_ctx *qedi, u32 tid, u32 *proto_itt) 1757 { 1758 *proto_itt = qedi->itt_map[tid].itt; 1759 QEDI_INFO(&qedi->dbg_ctx, QEDI_LOG_CONN, 1760 "Get itt map tid [0x%x with proto itt[0x%x]", 1761 tid, *proto_itt); 1762 } 1763 1764 struct qedi_cmd *qedi_get_cmd_from_tid(struct qedi_ctx *qedi, u32 tid) 1765 { 1766 struct qedi_cmd *cmd = NULL; 1767 1768 if (tid >= MAX_ISCSI_TASK_ENTRIES) 1769 return NULL; 1770 1771 cmd = qedi->itt_map[tid].p_cmd; 1772 if (cmd->task_id != tid) 1773 return NULL; 1774 1775 qedi->itt_map[tid].p_cmd = NULL; 1776 1777 return cmd; 1778 } 1779 1780 static int qedi_alloc_itt(struct qedi_ctx *qedi) 1781 { 1782 qedi->itt_map = kcalloc(MAX_ISCSI_TASK_ENTRIES, 1783 sizeof(struct qedi_itt_map), GFP_KERNEL); 1784 if (!qedi->itt_map) { 1785 QEDI_ERR(&qedi->dbg_ctx, 1786 "Unable to allocate itt map array memory\n"); 1787 return -ENOMEM; 1788 } 1789 return 0; 1790 } 1791 1792 static void qedi_free_itt(struct qedi_ctx *qedi) 1793 { 1794 kfree(qedi->itt_map); 1795 } 1796 1797 static struct qed_ll2_cb_ops qedi_ll2_cb_ops = { 1798 .rx_cb = qedi_ll2_rx, 1799 .tx_cb = NULL, 1800 }; 1801 1802 static int qedi_percpu_io_thread(void *arg) 1803 { 1804 struct qedi_percpu_s *p = arg; 1805 struct qedi_work *work, *tmp; 1806 unsigned long flags; 1807 LIST_HEAD(work_list); 1808 1809 set_user_nice(current, -20); 1810 1811 while (!kthread_should_stop()) { 1812 spin_lock_irqsave(&p->p_work_lock, flags); 1813 while (!list_empty(&p->work_list)) { 1814 list_splice_init(&p->work_list, &work_list); 1815 spin_unlock_irqrestore(&p->p_work_lock, flags); 1816 1817 list_for_each_entry_safe(work, tmp, &work_list, list) { 1818 list_del_init(&work->list); 1819 qedi_fp_process_cqes(work); 1820 if (!work->is_solicited) 1821 kfree(work); 1822 } 1823 cond_resched(); 1824 spin_lock_irqsave(&p->p_work_lock, flags); 1825 } 1826 set_current_state(TASK_INTERRUPTIBLE); 1827 spin_unlock_irqrestore(&p->p_work_lock, flags); 1828 schedule(); 1829 } 1830 __set_current_state(TASK_RUNNING); 1831 1832 return 0; 1833 } 1834 1835 static int qedi_cpu_online(unsigned int cpu) 1836 { 1837 struct qedi_percpu_s *p = this_cpu_ptr(&qedi_percpu); 1838 struct task_struct *thread; 1839 1840 thread = kthread_create_on_node(qedi_percpu_io_thread, (void *)p, 1841 cpu_to_node(cpu), 1842 "qedi_thread/%d", cpu); 1843 if (IS_ERR(thread)) 1844 return PTR_ERR(thread); 1845 1846 kthread_bind(thread, cpu); 1847 p->iothread = thread; 1848 wake_up_process(thread); 1849 return 0; 1850 } 1851 1852 static int qedi_cpu_offline(unsigned int cpu) 1853 { 1854 struct qedi_percpu_s *p = this_cpu_ptr(&qedi_percpu); 1855 struct qedi_work *work, *tmp; 1856 struct task_struct *thread; 1857 1858 spin_lock_bh(&p->p_work_lock); 1859 thread = p->iothread; 1860 p->iothread = NULL; 1861 1862 list_for_each_entry_safe(work, tmp, &p->work_list, list) { 1863 list_del_init(&work->list); 1864 qedi_fp_process_cqes(work); 1865 if (!work->is_solicited) 1866 kfree(work); 1867 } 1868 1869 spin_unlock_bh(&p->p_work_lock); 1870 if (thread) 1871 kthread_stop(thread); 1872 return 0; 1873 } 1874 1875 void qedi_reset_host_mtu(struct qedi_ctx *qedi, u16 mtu) 1876 { 1877 struct qed_ll2_params params; 1878 1879 qedi_recover_all_conns(qedi); 1880 1881 qedi_ops->ll2->stop(qedi->cdev); 1882 qedi_ll2_free_skbs(qedi); 1883 1884 QEDI_INFO(&qedi->dbg_ctx, QEDI_LOG_INFO, "old MTU %u, new MTU %u\n", 1885 qedi->ll2_mtu, mtu); 1886 memset(¶ms, 0, sizeof(params)); 1887 qedi->ll2_mtu = mtu; 1888 params.mtu = qedi->ll2_mtu + IPV6_HDR_LEN + TCP_HDR_LEN; 1889 params.drop_ttl0_packets = 0; 1890 params.rx_vlan_stripping = 1; 1891 ether_addr_copy(params.ll2_mac_address, qedi->dev_info.common.hw_mac); 1892 qedi_ops->ll2->start(qedi->cdev, ¶ms); 1893 } 1894 1895 /** 1896 * qedi_get_nvram_block: - Scan through the iSCSI NVRAM block (while accounting 1897 * for gaps) for the matching absolute-pf-id of the QEDI device. 1898 */ 1899 static struct nvm_iscsi_block * 1900 qedi_get_nvram_block(struct qedi_ctx *qedi) 1901 { 1902 int i; 1903 u8 pf; 1904 u32 flags; 1905 struct nvm_iscsi_block *block; 1906 1907 pf = qedi->dev_info.common.abs_pf_id; 1908 block = &qedi->iscsi_cfg->block[0]; 1909 for (i = 0; i < NUM_OF_ISCSI_PF_SUPPORTED; i++, block++) { 1910 flags = ((block->id) & NVM_ISCSI_CFG_BLK_CTRL_FLAG_MASK) >> 1911 NVM_ISCSI_CFG_BLK_CTRL_FLAG_OFFSET; 1912 if (flags & (NVM_ISCSI_CFG_BLK_CTRL_FLAG_IS_NOT_EMPTY | 1913 NVM_ISCSI_CFG_BLK_CTRL_FLAG_PF_MAPPED) && 1914 (pf == (block->id & NVM_ISCSI_CFG_BLK_MAPPED_PF_ID_MASK) 1915 >> NVM_ISCSI_CFG_BLK_MAPPED_PF_ID_OFFSET)) 1916 return block; 1917 } 1918 return NULL; 1919 } 1920 1921 static ssize_t qedi_show_boot_eth_info(void *data, int type, char *buf) 1922 { 1923 struct qedi_ctx *qedi = data; 1924 struct nvm_iscsi_initiator *initiator; 1925 int rc = 1; 1926 u32 ipv6_en, dhcp_en, ip_len; 1927 struct nvm_iscsi_block *block; 1928 char *fmt, *ip, *sub, *gw; 1929 1930 block = qedi_get_nvram_block(qedi); 1931 if (!block) 1932 return 0; 1933 1934 initiator = &block->initiator; 1935 ipv6_en = block->generic.ctrl_flags & 1936 NVM_ISCSI_CFG_GEN_IPV6_ENABLED; 1937 dhcp_en = block->generic.ctrl_flags & 1938 NVM_ISCSI_CFG_GEN_DHCP_TCPIP_CONFIG_ENABLED; 1939 /* Static IP assignments. */ 1940 fmt = ipv6_en ? "%pI6\n" : "%pI4\n"; 1941 ip = ipv6_en ? initiator->ipv6.addr.byte : initiator->ipv4.addr.byte; 1942 ip_len = ipv6_en ? IPV6_LEN : IPV4_LEN; 1943 sub = ipv6_en ? initiator->ipv6.subnet_mask.byte : 1944 initiator->ipv4.subnet_mask.byte; 1945 gw = ipv6_en ? initiator->ipv6.gateway.byte : 1946 initiator->ipv4.gateway.byte; 1947 /* DHCP IP adjustments. */ 1948 fmt = dhcp_en ? "%s\n" : fmt; 1949 if (dhcp_en) { 1950 ip = ipv6_en ? "0::0" : "0.0.0.0"; 1951 sub = ip; 1952 gw = ip; 1953 ip_len = ipv6_en ? 5 : 8; 1954 } 1955 1956 switch (type) { 1957 case ISCSI_BOOT_ETH_IP_ADDR: 1958 rc = snprintf(buf, ip_len, fmt, ip); 1959 break; 1960 case ISCSI_BOOT_ETH_SUBNET_MASK: 1961 rc = snprintf(buf, ip_len, fmt, sub); 1962 break; 1963 case ISCSI_BOOT_ETH_GATEWAY: 1964 rc = snprintf(buf, ip_len, fmt, gw); 1965 break; 1966 case ISCSI_BOOT_ETH_FLAGS: 1967 rc = snprintf(buf, 3, "%hhd\n", 1968 SYSFS_FLAG_FW_SEL_BOOT); 1969 break; 1970 case ISCSI_BOOT_ETH_INDEX: 1971 rc = snprintf(buf, 3, "0\n"); 1972 break; 1973 case ISCSI_BOOT_ETH_MAC: 1974 rc = sysfs_format_mac(buf, qedi->mac, ETH_ALEN); 1975 break; 1976 case ISCSI_BOOT_ETH_VLAN: 1977 rc = snprintf(buf, 12, "%d\n", 1978 GET_FIELD2(initiator->generic_cont0, 1979 NVM_ISCSI_CFG_INITIATOR_VLAN)); 1980 break; 1981 case ISCSI_BOOT_ETH_ORIGIN: 1982 if (dhcp_en) 1983 rc = snprintf(buf, 3, "3\n"); 1984 break; 1985 default: 1986 rc = 0; 1987 break; 1988 } 1989 1990 return rc; 1991 } 1992 1993 static umode_t qedi_eth_get_attr_visibility(void *data, int type) 1994 { 1995 int rc = 1; 1996 1997 switch (type) { 1998 case ISCSI_BOOT_ETH_FLAGS: 1999 case ISCSI_BOOT_ETH_MAC: 2000 case ISCSI_BOOT_ETH_INDEX: 2001 case ISCSI_BOOT_ETH_IP_ADDR: 2002 case ISCSI_BOOT_ETH_SUBNET_MASK: 2003 case ISCSI_BOOT_ETH_GATEWAY: 2004 case ISCSI_BOOT_ETH_ORIGIN: 2005 case ISCSI_BOOT_ETH_VLAN: 2006 rc = 0444; 2007 break; 2008 default: 2009 rc = 0; 2010 break; 2011 } 2012 return rc; 2013 } 2014 2015 static ssize_t qedi_show_boot_ini_info(void *data, int type, char *buf) 2016 { 2017 struct qedi_ctx *qedi = data; 2018 struct nvm_iscsi_initiator *initiator; 2019 int rc; 2020 struct nvm_iscsi_block *block; 2021 2022 block = qedi_get_nvram_block(qedi); 2023 if (!block) 2024 return 0; 2025 2026 initiator = &block->initiator; 2027 2028 switch (type) { 2029 case ISCSI_BOOT_INI_INITIATOR_NAME: 2030 rc = sprintf(buf, "%.*s\n", NVM_ISCSI_CFG_ISCSI_NAME_MAX_LEN, 2031 initiator->initiator_name.byte); 2032 break; 2033 default: 2034 rc = 0; 2035 break; 2036 } 2037 return rc; 2038 } 2039 2040 static umode_t qedi_ini_get_attr_visibility(void *data, int type) 2041 { 2042 int rc; 2043 2044 switch (type) { 2045 case ISCSI_BOOT_INI_INITIATOR_NAME: 2046 rc = 0444; 2047 break; 2048 default: 2049 rc = 0; 2050 break; 2051 } 2052 return rc; 2053 } 2054 2055 static ssize_t 2056 qedi_show_boot_tgt_info(struct qedi_ctx *qedi, int type, 2057 char *buf, enum qedi_nvm_tgts idx) 2058 { 2059 int rc = 1; 2060 u32 ctrl_flags, ipv6_en, chap_en, mchap_en, ip_len; 2061 struct nvm_iscsi_block *block; 2062 char *chap_name, *chap_secret; 2063 char *mchap_name, *mchap_secret; 2064 2065 block = qedi_get_nvram_block(qedi); 2066 if (!block) 2067 goto exit_show_tgt_info; 2068 2069 QEDI_INFO(&qedi->dbg_ctx, QEDI_LOG_EVT, 2070 "Port:%d, tgt_idx:%d\n", 2071 GET_FIELD2(block->id, NVM_ISCSI_CFG_BLK_MAPPED_PF_ID), idx); 2072 2073 ctrl_flags = block->target[idx].ctrl_flags & 2074 NVM_ISCSI_CFG_TARGET_ENABLED; 2075 2076 if (!ctrl_flags) { 2077 QEDI_INFO(&qedi->dbg_ctx, QEDI_LOG_EVT, 2078 "Target disabled\n"); 2079 goto exit_show_tgt_info; 2080 } 2081 2082 ipv6_en = block->generic.ctrl_flags & 2083 NVM_ISCSI_CFG_GEN_IPV6_ENABLED; 2084 ip_len = ipv6_en ? IPV6_LEN : IPV4_LEN; 2085 chap_en = block->generic.ctrl_flags & 2086 NVM_ISCSI_CFG_GEN_CHAP_ENABLED; 2087 chap_name = chap_en ? block->initiator.chap_name.byte : NULL; 2088 chap_secret = chap_en ? block->initiator.chap_password.byte : NULL; 2089 2090 mchap_en = block->generic.ctrl_flags & 2091 NVM_ISCSI_CFG_GEN_CHAP_MUTUAL_ENABLED; 2092 mchap_name = mchap_en ? block->target[idx].chap_name.byte : NULL; 2093 mchap_secret = mchap_en ? block->target[idx].chap_password.byte : NULL; 2094 2095 switch (type) { 2096 case ISCSI_BOOT_TGT_NAME: 2097 rc = sprintf(buf, "%.*s\n", NVM_ISCSI_CFG_ISCSI_NAME_MAX_LEN, 2098 block->target[idx].target_name.byte); 2099 break; 2100 case ISCSI_BOOT_TGT_IP_ADDR: 2101 if (ipv6_en) 2102 rc = snprintf(buf, ip_len, "%pI6\n", 2103 block->target[idx].ipv6_addr.byte); 2104 else 2105 rc = snprintf(buf, ip_len, "%pI4\n", 2106 block->target[idx].ipv4_addr.byte); 2107 break; 2108 case ISCSI_BOOT_TGT_PORT: 2109 rc = snprintf(buf, 12, "%d\n", 2110 GET_FIELD2(block->target[idx].generic_cont0, 2111 NVM_ISCSI_CFG_TARGET_TCP_PORT)); 2112 break; 2113 case ISCSI_BOOT_TGT_LUN: 2114 rc = snprintf(buf, 22, "%.*d\n", 2115 block->target[idx].lun.value[1], 2116 block->target[idx].lun.value[0]); 2117 break; 2118 case ISCSI_BOOT_TGT_CHAP_NAME: 2119 rc = sprintf(buf, "%.*s\n", NVM_ISCSI_CFG_CHAP_NAME_MAX_LEN, 2120 chap_name); 2121 break; 2122 case ISCSI_BOOT_TGT_CHAP_SECRET: 2123 rc = sprintf(buf, "%.*s\n", NVM_ISCSI_CFG_CHAP_NAME_MAX_LEN, 2124 chap_secret); 2125 break; 2126 case ISCSI_BOOT_TGT_REV_CHAP_NAME: 2127 rc = sprintf(buf, "%.*s\n", NVM_ISCSI_CFG_CHAP_NAME_MAX_LEN, 2128 mchap_name); 2129 break; 2130 case ISCSI_BOOT_TGT_REV_CHAP_SECRET: 2131 rc = sprintf(buf, "%.*s\n", NVM_ISCSI_CFG_CHAP_NAME_MAX_LEN, 2132 mchap_secret); 2133 break; 2134 case ISCSI_BOOT_TGT_FLAGS: 2135 rc = snprintf(buf, 3, "%hhd\n", SYSFS_FLAG_FW_SEL_BOOT); 2136 break; 2137 case ISCSI_BOOT_TGT_NIC_ASSOC: 2138 rc = snprintf(buf, 3, "0\n"); 2139 break; 2140 default: 2141 rc = 0; 2142 break; 2143 } 2144 2145 exit_show_tgt_info: 2146 return rc; 2147 } 2148 2149 static ssize_t qedi_show_boot_tgt_pri_info(void *data, int type, char *buf) 2150 { 2151 struct qedi_ctx *qedi = data; 2152 2153 return qedi_show_boot_tgt_info(qedi, type, buf, QEDI_NVM_TGT_PRI); 2154 } 2155 2156 static ssize_t qedi_show_boot_tgt_sec_info(void *data, int type, char *buf) 2157 { 2158 struct qedi_ctx *qedi = data; 2159 2160 return qedi_show_boot_tgt_info(qedi, type, buf, QEDI_NVM_TGT_SEC); 2161 } 2162 2163 static umode_t qedi_tgt_get_attr_visibility(void *data, int type) 2164 { 2165 int rc; 2166 2167 switch (type) { 2168 case ISCSI_BOOT_TGT_NAME: 2169 case ISCSI_BOOT_TGT_IP_ADDR: 2170 case ISCSI_BOOT_TGT_PORT: 2171 case ISCSI_BOOT_TGT_LUN: 2172 case ISCSI_BOOT_TGT_CHAP_NAME: 2173 case ISCSI_BOOT_TGT_CHAP_SECRET: 2174 case ISCSI_BOOT_TGT_REV_CHAP_NAME: 2175 case ISCSI_BOOT_TGT_REV_CHAP_SECRET: 2176 case ISCSI_BOOT_TGT_NIC_ASSOC: 2177 case ISCSI_BOOT_TGT_FLAGS: 2178 rc = 0444; 2179 break; 2180 default: 2181 rc = 0; 2182 break; 2183 } 2184 return rc; 2185 } 2186 2187 static void qedi_boot_release(void *data) 2188 { 2189 struct qedi_ctx *qedi = data; 2190 2191 scsi_host_put(qedi->shost); 2192 } 2193 2194 static int qedi_get_boot_info(struct qedi_ctx *qedi) 2195 { 2196 int ret = 1; 2197 u16 len; 2198 2199 len = sizeof(struct nvm_iscsi_cfg); 2200 2201 QEDI_INFO(&qedi->dbg_ctx, QEDI_LOG_INFO, 2202 "Get NVM iSCSI CFG image\n"); 2203 ret = qedi_ops->common->nvm_get_image(qedi->cdev, 2204 QED_NVM_IMAGE_ISCSI_CFG, 2205 (char *)qedi->iscsi_cfg, len); 2206 if (ret) 2207 QEDI_ERR(&qedi->dbg_ctx, 2208 "Could not get NVM image. ret = %d\n", ret); 2209 2210 return ret; 2211 } 2212 2213 static int qedi_setup_boot_info(struct qedi_ctx *qedi) 2214 { 2215 struct iscsi_boot_kobj *boot_kobj; 2216 2217 if (qedi_get_boot_info(qedi)) 2218 return -EPERM; 2219 2220 qedi->boot_kset = iscsi_boot_create_host_kset(qedi->shost->host_no); 2221 if (!qedi->boot_kset) 2222 goto kset_free; 2223 2224 if (!scsi_host_get(qedi->shost)) 2225 goto kset_free; 2226 2227 boot_kobj = iscsi_boot_create_target(qedi->boot_kset, 0, qedi, 2228 qedi_show_boot_tgt_pri_info, 2229 qedi_tgt_get_attr_visibility, 2230 qedi_boot_release); 2231 if (!boot_kobj) 2232 goto put_host; 2233 2234 if (!scsi_host_get(qedi->shost)) 2235 goto kset_free; 2236 2237 boot_kobj = iscsi_boot_create_target(qedi->boot_kset, 1, qedi, 2238 qedi_show_boot_tgt_sec_info, 2239 qedi_tgt_get_attr_visibility, 2240 qedi_boot_release); 2241 if (!boot_kobj) 2242 goto put_host; 2243 2244 if (!scsi_host_get(qedi->shost)) 2245 goto kset_free; 2246 2247 boot_kobj = iscsi_boot_create_initiator(qedi->boot_kset, 0, qedi, 2248 qedi_show_boot_ini_info, 2249 qedi_ini_get_attr_visibility, 2250 qedi_boot_release); 2251 if (!boot_kobj) 2252 goto put_host; 2253 2254 if (!scsi_host_get(qedi->shost)) 2255 goto kset_free; 2256 2257 boot_kobj = iscsi_boot_create_ethernet(qedi->boot_kset, 0, qedi, 2258 qedi_show_boot_eth_info, 2259 qedi_eth_get_attr_visibility, 2260 qedi_boot_release); 2261 if (!boot_kobj) 2262 goto put_host; 2263 2264 return 0; 2265 2266 put_host: 2267 scsi_host_put(qedi->shost); 2268 kset_free: 2269 iscsi_boot_destroy_kset(qedi->boot_kset); 2270 return -ENOMEM; 2271 } 2272 2273 static void __qedi_remove(struct pci_dev *pdev, int mode) 2274 { 2275 struct qedi_ctx *qedi = pci_get_drvdata(pdev); 2276 int rval; 2277 2278 if (qedi->tmf_thread) { 2279 flush_workqueue(qedi->tmf_thread); 2280 destroy_workqueue(qedi->tmf_thread); 2281 qedi->tmf_thread = NULL; 2282 } 2283 2284 if (qedi->offload_thread) { 2285 flush_workqueue(qedi->offload_thread); 2286 destroy_workqueue(qedi->offload_thread); 2287 qedi->offload_thread = NULL; 2288 } 2289 2290 #ifdef CONFIG_DEBUG_FS 2291 qedi_dbg_host_exit(&qedi->dbg_ctx); 2292 #endif 2293 if (!test_bit(QEDI_IN_OFFLINE, &qedi->flags)) 2294 qedi_ops->common->set_power_state(qedi->cdev, PCI_D0); 2295 2296 qedi_sync_free_irqs(qedi); 2297 2298 if (!test_bit(QEDI_IN_OFFLINE, &qedi->flags)) { 2299 qedi_ops->stop(qedi->cdev); 2300 qedi_ops->ll2->stop(qedi->cdev); 2301 } 2302 2303 if (mode == QEDI_MODE_NORMAL) 2304 qedi_free_iscsi_pf_param(qedi); 2305 2306 rval = qedi_ops->common->update_drv_state(qedi->cdev, false); 2307 if (rval) 2308 QEDI_ERR(&qedi->dbg_ctx, "Failed to send drv state to MFW\n"); 2309 2310 if (!test_bit(QEDI_IN_OFFLINE, &qedi->flags)) { 2311 qedi_ops->common->slowpath_stop(qedi->cdev); 2312 qedi_ops->common->remove(qedi->cdev); 2313 } 2314 2315 qedi_destroy_fp(qedi); 2316 2317 if (mode == QEDI_MODE_NORMAL) { 2318 qedi_release_cid_que(qedi); 2319 qedi_cm_free_mem(qedi); 2320 qedi_free_uio(qedi->udev); 2321 qedi_free_itt(qedi); 2322 2323 iscsi_host_remove(qedi->shost); 2324 iscsi_host_free(qedi->shost); 2325 2326 if (qedi->ll2_recv_thread) { 2327 kthread_stop(qedi->ll2_recv_thread); 2328 qedi->ll2_recv_thread = NULL; 2329 } 2330 qedi_ll2_free_skbs(qedi); 2331 2332 if (qedi->boot_kset) 2333 iscsi_boot_destroy_kset(qedi->boot_kset); 2334 } 2335 } 2336 2337 static int __qedi_probe(struct pci_dev *pdev, int mode) 2338 { 2339 struct qedi_ctx *qedi; 2340 struct qed_ll2_params params; 2341 u32 dp_module = 0; 2342 u8 dp_level = 0; 2343 bool is_vf = false; 2344 char host_buf[16]; 2345 struct qed_link_params link_params; 2346 struct qed_slowpath_params sp_params; 2347 struct qed_probe_params qed_params; 2348 void *task_start, *task_end; 2349 int rc; 2350 u16 tmp; 2351 2352 if (mode != QEDI_MODE_RECOVERY) { 2353 qedi = qedi_host_alloc(pdev); 2354 if (!qedi) { 2355 rc = -ENOMEM; 2356 goto exit_probe; 2357 } 2358 } else { 2359 qedi = pci_get_drvdata(pdev); 2360 } 2361 2362 memset(&qed_params, 0, sizeof(qed_params)); 2363 qed_params.protocol = QED_PROTOCOL_ISCSI; 2364 qed_params.dp_module = dp_module; 2365 qed_params.dp_level = dp_level; 2366 qed_params.is_vf = is_vf; 2367 qedi->cdev = qedi_ops->common->probe(pdev, &qed_params); 2368 if (!qedi->cdev) { 2369 rc = -ENODEV; 2370 QEDI_ERR(&qedi->dbg_ctx, "Cannot initialize hardware\n"); 2371 goto free_host; 2372 } 2373 2374 atomic_set(&qedi->link_state, QEDI_LINK_DOWN); 2375 2376 rc = qedi_ops->fill_dev_info(qedi->cdev, &qedi->dev_info); 2377 if (rc) 2378 goto free_host; 2379 2380 if (mode != QEDI_MODE_RECOVERY) { 2381 rc = qedi_set_iscsi_pf_param(qedi); 2382 if (rc) { 2383 rc = -ENOMEM; 2384 QEDI_ERR(&qedi->dbg_ctx, 2385 "Set iSCSI pf param fail\n"); 2386 goto free_host; 2387 } 2388 } 2389 2390 qedi_ops->common->update_pf_params(qedi->cdev, &qedi->pf_params); 2391 2392 rc = qedi_prepare_fp(qedi); 2393 if (rc) { 2394 QEDI_ERR(&qedi->dbg_ctx, "Cannot start slowpath.\n"); 2395 goto free_pf_params; 2396 } 2397 2398 /* Start the Slowpath-process */ 2399 memset(&sp_params, 0, sizeof(struct qed_slowpath_params)); 2400 sp_params.int_mode = QED_INT_MODE_MSIX; 2401 sp_params.drv_major = QEDI_DRIVER_MAJOR_VER; 2402 sp_params.drv_minor = QEDI_DRIVER_MINOR_VER; 2403 sp_params.drv_rev = QEDI_DRIVER_REV_VER; 2404 sp_params.drv_eng = QEDI_DRIVER_ENG_VER; 2405 strlcpy(sp_params.name, "qedi iSCSI", QED_DRV_VER_STR_SIZE); 2406 rc = qedi_ops->common->slowpath_start(qedi->cdev, &sp_params); 2407 if (rc) { 2408 QEDI_ERR(&qedi->dbg_ctx, "Cannot start slowpath\n"); 2409 goto stop_hw; 2410 } 2411 2412 /* update_pf_params needs to be called before and after slowpath 2413 * start 2414 */ 2415 qedi_ops->common->update_pf_params(qedi->cdev, &qedi->pf_params); 2416 2417 rc = qedi_setup_int(qedi); 2418 if (rc) 2419 goto stop_iscsi_func; 2420 2421 qedi_ops->common->set_power_state(qedi->cdev, PCI_D0); 2422 2423 /* Learn information crucial for qedi to progress */ 2424 rc = qedi_ops->fill_dev_info(qedi->cdev, &qedi->dev_info); 2425 if (rc) 2426 goto stop_iscsi_func; 2427 2428 /* Record BDQ producer doorbell addresses */ 2429 qedi->bdq_primary_prod = qedi->dev_info.primary_dbq_rq_addr; 2430 qedi->bdq_secondary_prod = qedi->dev_info.secondary_bdq_rq_addr; 2431 QEDI_INFO(&qedi->dbg_ctx, QEDI_LOG_DISC, 2432 "BDQ primary_prod=%p secondary_prod=%p.\n", 2433 qedi->bdq_primary_prod, 2434 qedi->bdq_secondary_prod); 2435 2436 /* 2437 * We need to write the number of BDs in the BDQ we've preallocated so 2438 * the f/w will do a prefetch and we'll get an unsolicited CQE when a 2439 * packet arrives. 2440 */ 2441 qedi->bdq_prod_idx = QEDI_BDQ_NUM; 2442 QEDI_INFO(&qedi->dbg_ctx, QEDI_LOG_DISC, 2443 "Writing %d to primary and secondary BDQ doorbell registers.\n", 2444 qedi->bdq_prod_idx); 2445 writew(qedi->bdq_prod_idx, qedi->bdq_primary_prod); 2446 tmp = readw(qedi->bdq_primary_prod); 2447 writew(qedi->bdq_prod_idx, qedi->bdq_secondary_prod); 2448 tmp = readw(qedi->bdq_secondary_prod); 2449 2450 ether_addr_copy(qedi->mac, qedi->dev_info.common.hw_mac); 2451 QEDI_INFO(&qedi->dbg_ctx, QEDI_LOG_DISC, "MAC address is %pM.\n", 2452 qedi->mac); 2453 2454 sprintf(host_buf, "host_%d", qedi->shost->host_no); 2455 qedi_ops->common->set_name(qedi->cdev, host_buf); 2456 2457 qedi_ops->register_ops(qedi->cdev, &qedi_cb_ops, qedi); 2458 2459 memset(¶ms, 0, sizeof(params)); 2460 params.mtu = DEF_PATH_MTU + IPV6_HDR_LEN + TCP_HDR_LEN; 2461 qedi->ll2_mtu = DEF_PATH_MTU; 2462 params.drop_ttl0_packets = 0; 2463 params.rx_vlan_stripping = 1; 2464 ether_addr_copy(params.ll2_mac_address, qedi->dev_info.common.hw_mac); 2465 2466 if (mode != QEDI_MODE_RECOVERY) { 2467 /* set up rx path */ 2468 INIT_LIST_HEAD(&qedi->ll2_skb_list); 2469 spin_lock_init(&qedi->ll2_lock); 2470 /* start qedi context */ 2471 spin_lock_init(&qedi->hba_lock); 2472 spin_lock_init(&qedi->task_idx_lock); 2473 } 2474 qedi_ops->ll2->register_cb_ops(qedi->cdev, &qedi_ll2_cb_ops, qedi); 2475 qedi_ops->ll2->start(qedi->cdev, ¶ms); 2476 2477 if (mode != QEDI_MODE_RECOVERY) { 2478 qedi->ll2_recv_thread = kthread_run(qedi_ll2_recv_thread, 2479 (void *)qedi, 2480 "qedi_ll2_thread"); 2481 } 2482 2483 rc = qedi_ops->start(qedi->cdev, &qedi->tasks, 2484 qedi, qedi_iscsi_event_cb); 2485 if (rc) { 2486 rc = -ENODEV; 2487 QEDI_ERR(&qedi->dbg_ctx, "Cannot start iSCSI function\n"); 2488 goto stop_slowpath; 2489 } 2490 2491 task_start = qedi_get_task_mem(&qedi->tasks, 0); 2492 task_end = qedi_get_task_mem(&qedi->tasks, MAX_TID_BLOCKS_ISCSI - 1); 2493 QEDI_INFO(&qedi->dbg_ctx, QEDI_LOG_DISC, 2494 "Task context start=%p, end=%p block_size=%u.\n", 2495 task_start, task_end, qedi->tasks.size); 2496 2497 memset(&link_params, 0, sizeof(link_params)); 2498 link_params.link_up = true; 2499 rc = qedi_ops->common->set_link(qedi->cdev, &link_params); 2500 if (rc) { 2501 QEDI_WARN(&qedi->dbg_ctx, "Link set up failed.\n"); 2502 atomic_set(&qedi->link_state, QEDI_LINK_DOWN); 2503 } 2504 2505 #ifdef CONFIG_DEBUG_FS 2506 qedi_dbg_host_init(&qedi->dbg_ctx, qedi_debugfs_ops, 2507 qedi_dbg_fops); 2508 #endif 2509 QEDI_INFO(&qedi->dbg_ctx, QEDI_LOG_INFO, 2510 "QLogic FastLinQ iSCSI Module qedi %s, FW %d.%d.%d.%d\n", 2511 QEDI_MODULE_VERSION, FW_MAJOR_VERSION, FW_MINOR_VERSION, 2512 FW_REVISION_VERSION, FW_ENGINEERING_VERSION); 2513 2514 if (mode == QEDI_MODE_NORMAL) { 2515 if (iscsi_host_add(qedi->shost, &pdev->dev)) { 2516 QEDI_ERR(&qedi->dbg_ctx, 2517 "Could not add iscsi host\n"); 2518 rc = -ENOMEM; 2519 goto remove_host; 2520 } 2521 2522 /* Allocate uio buffers */ 2523 rc = qedi_alloc_uio_rings(qedi); 2524 if (rc) { 2525 QEDI_ERR(&qedi->dbg_ctx, 2526 "UIO alloc ring failed err=%d\n", rc); 2527 goto remove_host; 2528 } 2529 2530 rc = qedi_init_uio(qedi); 2531 if (rc) { 2532 QEDI_ERR(&qedi->dbg_ctx, 2533 "UIO init failed, err=%d\n", rc); 2534 goto free_uio; 2535 } 2536 2537 /* host the array on iscsi_conn */ 2538 rc = qedi_setup_cid_que(qedi); 2539 if (rc) { 2540 QEDI_ERR(&qedi->dbg_ctx, 2541 "Could not setup cid que\n"); 2542 goto free_uio; 2543 } 2544 2545 rc = qedi_cm_alloc_mem(qedi); 2546 if (rc) { 2547 QEDI_ERR(&qedi->dbg_ctx, 2548 "Could not alloc cm memory\n"); 2549 goto free_cid_que; 2550 } 2551 2552 rc = qedi_alloc_itt(qedi); 2553 if (rc) { 2554 QEDI_ERR(&qedi->dbg_ctx, 2555 "Could not alloc itt memory\n"); 2556 goto free_cid_que; 2557 } 2558 2559 sprintf(host_buf, "host_%d", qedi->shost->host_no); 2560 qedi->tmf_thread = create_singlethread_workqueue(host_buf); 2561 if (!qedi->tmf_thread) { 2562 QEDI_ERR(&qedi->dbg_ctx, 2563 "Unable to start tmf thread!\n"); 2564 rc = -ENODEV; 2565 goto free_cid_que; 2566 } 2567 2568 sprintf(host_buf, "qedi_ofld%d", qedi->shost->host_no); 2569 qedi->offload_thread = create_workqueue(host_buf); 2570 if (!qedi->offload_thread) { 2571 QEDI_ERR(&qedi->dbg_ctx, 2572 "Unable to start offload thread!\n"); 2573 rc = -ENODEV; 2574 goto free_cid_que; 2575 } 2576 2577 /* F/w needs 1st task context memory entry for performance */ 2578 set_bit(QEDI_RESERVE_TASK_ID, qedi->task_idx_map); 2579 atomic_set(&qedi->num_offloads, 0); 2580 2581 if (qedi_setup_boot_info(qedi)) 2582 QEDI_ERR(&qedi->dbg_ctx, 2583 "No iSCSI boot target configured\n"); 2584 2585 rc = qedi_ops->common->update_drv_state(qedi->cdev, true); 2586 if (rc) 2587 QEDI_ERR(&qedi->dbg_ctx, 2588 "Failed to send drv state to MFW\n"); 2589 2590 } 2591 2592 return 0; 2593 2594 free_cid_que: 2595 qedi_release_cid_que(qedi); 2596 free_uio: 2597 qedi_free_uio(qedi->udev); 2598 remove_host: 2599 #ifdef CONFIG_DEBUG_FS 2600 qedi_dbg_host_exit(&qedi->dbg_ctx); 2601 #endif 2602 iscsi_host_remove(qedi->shost); 2603 stop_iscsi_func: 2604 qedi_ops->stop(qedi->cdev); 2605 stop_slowpath: 2606 qedi_ops->common->slowpath_stop(qedi->cdev); 2607 stop_hw: 2608 qedi_ops->common->remove(qedi->cdev); 2609 free_pf_params: 2610 qedi_free_iscsi_pf_param(qedi); 2611 free_host: 2612 iscsi_host_free(qedi->shost); 2613 exit_probe: 2614 return rc; 2615 } 2616 2617 static int qedi_probe(struct pci_dev *pdev, const struct pci_device_id *id) 2618 { 2619 return __qedi_probe(pdev, QEDI_MODE_NORMAL); 2620 } 2621 2622 static void qedi_remove(struct pci_dev *pdev) 2623 { 2624 __qedi_remove(pdev, QEDI_MODE_NORMAL); 2625 } 2626 2627 static struct pci_device_id qedi_pci_tbl[] = { 2628 { PCI_DEVICE(PCI_VENDOR_ID_QLOGIC, 0x165E) }, 2629 { PCI_DEVICE(PCI_VENDOR_ID_QLOGIC, 0x8084) }, 2630 { 0 }, 2631 }; 2632 MODULE_DEVICE_TABLE(pci, qedi_pci_tbl); 2633 2634 static enum cpuhp_state qedi_cpuhp_state; 2635 2636 static struct pci_driver qedi_pci_driver = { 2637 .name = QEDI_MODULE_NAME, 2638 .id_table = qedi_pci_tbl, 2639 .probe = qedi_probe, 2640 .remove = qedi_remove, 2641 }; 2642 2643 static int __init qedi_init(void) 2644 { 2645 struct qedi_percpu_s *p; 2646 int cpu, rc = 0; 2647 2648 qedi_ops = qed_get_iscsi_ops(); 2649 if (!qedi_ops) { 2650 QEDI_ERR(NULL, "Failed to get qed iSCSI operations\n"); 2651 return -EINVAL; 2652 } 2653 2654 #ifdef CONFIG_DEBUG_FS 2655 qedi_dbg_init("qedi"); 2656 #endif 2657 2658 qedi_scsi_transport = iscsi_register_transport(&qedi_iscsi_transport); 2659 if (!qedi_scsi_transport) { 2660 QEDI_ERR(NULL, "Could not register qedi transport"); 2661 rc = -ENOMEM; 2662 goto exit_qedi_init_1; 2663 } 2664 2665 for_each_possible_cpu(cpu) { 2666 p = &per_cpu(qedi_percpu, cpu); 2667 INIT_LIST_HEAD(&p->work_list); 2668 spin_lock_init(&p->p_work_lock); 2669 p->iothread = NULL; 2670 } 2671 2672 rc = cpuhp_setup_state(CPUHP_AP_ONLINE_DYN, "scsi/qedi:online", 2673 qedi_cpu_online, qedi_cpu_offline); 2674 if (rc < 0) 2675 goto exit_qedi_init_2; 2676 qedi_cpuhp_state = rc; 2677 2678 rc = pci_register_driver(&qedi_pci_driver); 2679 if (rc) { 2680 QEDI_ERR(NULL, "Failed to register driver\n"); 2681 goto exit_qedi_hp; 2682 } 2683 2684 return 0; 2685 2686 exit_qedi_hp: 2687 cpuhp_remove_state(qedi_cpuhp_state); 2688 exit_qedi_init_2: 2689 iscsi_unregister_transport(&qedi_iscsi_transport); 2690 exit_qedi_init_1: 2691 #ifdef CONFIG_DEBUG_FS 2692 qedi_dbg_exit(); 2693 #endif 2694 qed_put_iscsi_ops(); 2695 return rc; 2696 } 2697 2698 static void __exit qedi_cleanup(void) 2699 { 2700 pci_unregister_driver(&qedi_pci_driver); 2701 cpuhp_remove_state(qedi_cpuhp_state); 2702 iscsi_unregister_transport(&qedi_iscsi_transport); 2703 2704 #ifdef CONFIG_DEBUG_FS 2705 qedi_dbg_exit(); 2706 #endif 2707 qed_put_iscsi_ops(); 2708 } 2709 2710 MODULE_DESCRIPTION("QLogic FastLinQ 4xxxx iSCSI Module"); 2711 MODULE_LICENSE("GPL"); 2712 MODULE_AUTHOR("QLogic Corporation"); 2713 MODULE_VERSION(QEDI_MODULE_VERSION); 2714 module_init(qedi_init); 2715 module_exit(qedi_cleanup); 2716