1 // SPDX-License-Identifier: GPL-2.0 2 /* Copyright(c) 2017 - 2019 Pensando Systems, Inc */ 3 4 #include <linux/printk.h> 5 #include <linux/dynamic_debug.h> 6 #include <linux/module.h> 7 #include <linux/netdevice.h> 8 #include <linux/utsname.h> 9 #include <generated/utsrelease.h> 10 #include <linux/ctype.h> 11 12 #include "ionic.h" 13 #include "ionic_bus.h" 14 #include "ionic_lif.h" 15 #include "ionic_debugfs.h" 16 17 MODULE_DESCRIPTION(IONIC_DRV_DESCRIPTION); 18 MODULE_AUTHOR("Shannon Nelson <shannon.nelson@amd.com>"); 19 MODULE_LICENSE("GPL"); 20 21 static const char *ionic_error_to_str(enum ionic_status_code code) 22 { 23 switch (code) { 24 case IONIC_RC_SUCCESS: 25 return "IONIC_RC_SUCCESS"; 26 case IONIC_RC_EVERSION: 27 return "IONIC_RC_EVERSION"; 28 case IONIC_RC_EOPCODE: 29 return "IONIC_RC_EOPCODE"; 30 case IONIC_RC_EIO: 31 return "IONIC_RC_EIO"; 32 case IONIC_RC_EPERM: 33 return "IONIC_RC_EPERM"; 34 case IONIC_RC_EQID: 35 return "IONIC_RC_EQID"; 36 case IONIC_RC_EQTYPE: 37 return "IONIC_RC_EQTYPE"; 38 case IONIC_RC_ENOENT: 39 return "IONIC_RC_ENOENT"; 40 case IONIC_RC_EINTR: 41 return "IONIC_RC_EINTR"; 42 case IONIC_RC_EAGAIN: 43 return "IONIC_RC_EAGAIN"; 44 case IONIC_RC_ENOMEM: 45 return "IONIC_RC_ENOMEM"; 46 case IONIC_RC_EFAULT: 47 return "IONIC_RC_EFAULT"; 48 case IONIC_RC_EBUSY: 49 return "IONIC_RC_EBUSY"; 50 case IONIC_RC_EEXIST: 51 return "IONIC_RC_EEXIST"; 52 case IONIC_RC_EINVAL: 53 return "IONIC_RC_EINVAL"; 54 case IONIC_RC_ENOSPC: 55 return "IONIC_RC_ENOSPC"; 56 case IONIC_RC_ERANGE: 57 return "IONIC_RC_ERANGE"; 58 case IONIC_RC_BAD_ADDR: 59 return "IONIC_RC_BAD_ADDR"; 60 case IONIC_RC_DEV_CMD: 61 return "IONIC_RC_DEV_CMD"; 62 case IONIC_RC_ENOSUPP: 63 return "IONIC_RC_ENOSUPP"; 64 case IONIC_RC_ERROR: 65 return "IONIC_RC_ERROR"; 66 case IONIC_RC_ERDMA: 67 return "IONIC_RC_ERDMA"; 68 case IONIC_RC_EBAD_FW: 69 return "IONIC_RC_EBAD_FW"; 70 default: 71 return "IONIC_RC_UNKNOWN"; 72 } 73 } 74 75 static int ionic_error_to_errno(enum ionic_status_code code) 76 { 77 switch (code) { 78 case IONIC_RC_SUCCESS: 79 return 0; 80 case IONIC_RC_EVERSION: 81 case IONIC_RC_EQTYPE: 82 case IONIC_RC_EQID: 83 case IONIC_RC_EINVAL: 84 return -EINVAL; 85 case IONIC_RC_ENOSUPP: 86 return -EOPNOTSUPP; 87 case IONIC_RC_EPERM: 88 return -EPERM; 89 case IONIC_RC_ENOENT: 90 return -ENOENT; 91 case IONIC_RC_EAGAIN: 92 return -EAGAIN; 93 case IONIC_RC_ENOMEM: 94 return -ENOMEM; 95 case IONIC_RC_EFAULT: 96 return -EFAULT; 97 case IONIC_RC_EBUSY: 98 return -EBUSY; 99 case IONIC_RC_EEXIST: 100 return -EEXIST; 101 case IONIC_RC_ENOSPC: 102 return -ENOSPC; 103 case IONIC_RC_ERANGE: 104 return -ERANGE; 105 case IONIC_RC_BAD_ADDR: 106 return -EFAULT; 107 case IONIC_RC_EOPCODE: 108 case IONIC_RC_EINTR: 109 case IONIC_RC_DEV_CMD: 110 case IONIC_RC_ERROR: 111 case IONIC_RC_ERDMA: 112 case IONIC_RC_EIO: 113 default: 114 return -EIO; 115 } 116 } 117 118 static const char *ionic_opcode_to_str(enum ionic_cmd_opcode opcode) 119 { 120 switch (opcode) { 121 case IONIC_CMD_NOP: 122 return "IONIC_CMD_NOP"; 123 case IONIC_CMD_INIT: 124 return "IONIC_CMD_INIT"; 125 case IONIC_CMD_RESET: 126 return "IONIC_CMD_RESET"; 127 case IONIC_CMD_IDENTIFY: 128 return "IONIC_CMD_IDENTIFY"; 129 case IONIC_CMD_GETATTR: 130 return "IONIC_CMD_GETATTR"; 131 case IONIC_CMD_SETATTR: 132 return "IONIC_CMD_SETATTR"; 133 case IONIC_CMD_PORT_IDENTIFY: 134 return "IONIC_CMD_PORT_IDENTIFY"; 135 case IONIC_CMD_PORT_INIT: 136 return "IONIC_CMD_PORT_INIT"; 137 case IONIC_CMD_PORT_RESET: 138 return "IONIC_CMD_PORT_RESET"; 139 case IONIC_CMD_PORT_GETATTR: 140 return "IONIC_CMD_PORT_GETATTR"; 141 case IONIC_CMD_PORT_SETATTR: 142 return "IONIC_CMD_PORT_SETATTR"; 143 case IONIC_CMD_LIF_INIT: 144 return "IONIC_CMD_LIF_INIT"; 145 case IONIC_CMD_LIF_RESET: 146 return "IONIC_CMD_LIF_RESET"; 147 case IONIC_CMD_LIF_IDENTIFY: 148 return "IONIC_CMD_LIF_IDENTIFY"; 149 case IONIC_CMD_LIF_SETATTR: 150 return "IONIC_CMD_LIF_SETATTR"; 151 case IONIC_CMD_LIF_GETATTR: 152 return "IONIC_CMD_LIF_GETATTR"; 153 case IONIC_CMD_LIF_SETPHC: 154 return "IONIC_CMD_LIF_SETPHC"; 155 case IONIC_CMD_RX_MODE_SET: 156 return "IONIC_CMD_RX_MODE_SET"; 157 case IONIC_CMD_RX_FILTER_ADD: 158 return "IONIC_CMD_RX_FILTER_ADD"; 159 case IONIC_CMD_RX_FILTER_DEL: 160 return "IONIC_CMD_RX_FILTER_DEL"; 161 case IONIC_CMD_Q_IDENTIFY: 162 return "IONIC_CMD_Q_IDENTIFY"; 163 case IONIC_CMD_Q_INIT: 164 return "IONIC_CMD_Q_INIT"; 165 case IONIC_CMD_Q_CONTROL: 166 return "IONIC_CMD_Q_CONTROL"; 167 case IONIC_CMD_RDMA_RESET_LIF: 168 return "IONIC_CMD_RDMA_RESET_LIF"; 169 case IONIC_CMD_RDMA_CREATE_EQ: 170 return "IONIC_CMD_RDMA_CREATE_EQ"; 171 case IONIC_CMD_RDMA_CREATE_CQ: 172 return "IONIC_CMD_RDMA_CREATE_CQ"; 173 case IONIC_CMD_RDMA_CREATE_ADMINQ: 174 return "IONIC_CMD_RDMA_CREATE_ADMINQ"; 175 case IONIC_CMD_FW_DOWNLOAD: 176 return "IONIC_CMD_FW_DOWNLOAD"; 177 case IONIC_CMD_FW_CONTROL: 178 return "IONIC_CMD_FW_CONTROL"; 179 case IONIC_CMD_FW_DOWNLOAD_V1: 180 return "IONIC_CMD_FW_DOWNLOAD_V1"; 181 case IONIC_CMD_FW_CONTROL_V1: 182 return "IONIC_CMD_FW_CONTROL_V1"; 183 case IONIC_CMD_VF_GETATTR: 184 return "IONIC_CMD_VF_GETATTR"; 185 case IONIC_CMD_VF_SETATTR: 186 return "IONIC_CMD_VF_SETATTR"; 187 default: 188 return "DEVCMD_UNKNOWN"; 189 } 190 } 191 192 static void ionic_adminq_flush(struct ionic_lif *lif) 193 { 194 struct ionic_admin_desc_info *desc_info; 195 struct ionic_admin_cmd *desc; 196 unsigned long irqflags; 197 struct ionic_queue *q; 198 199 spin_lock_irqsave(&lif->adminq_lock, irqflags); 200 if (!lif->adminqcq) { 201 spin_unlock_irqrestore(&lif->adminq_lock, irqflags); 202 return; 203 } 204 205 q = &lif->adminqcq->q; 206 207 while (q->tail_idx != q->head_idx) { 208 desc = &q->adminq[q->tail_idx]; 209 desc_info = &q->admin_info[q->tail_idx]; 210 memset(desc, 0, sizeof(union ionic_adminq_cmd)); 211 desc_info->ctx = NULL; 212 q->tail_idx = (q->tail_idx + 1) & (q->num_descs - 1); 213 } 214 spin_unlock_irqrestore(&lif->adminq_lock, irqflags); 215 } 216 217 void ionic_adminq_netdev_err_print(struct ionic_lif *lif, u8 opcode, 218 u8 status, int err) 219 { 220 const char *stat_str; 221 222 stat_str = (err == -ETIMEDOUT) ? "TIMEOUT" : 223 ionic_error_to_str(status); 224 225 netdev_err(lif->netdev, "%s (%d) failed: %s (%d)\n", 226 ionic_opcode_to_str(opcode), opcode, stat_str, err); 227 } 228 229 static int ionic_adminq_check_err(struct ionic_lif *lif, 230 struct ionic_admin_ctx *ctx, 231 const bool timeout, 232 const bool do_msg) 233 { 234 int err = 0; 235 236 if (ctx->comp.comp.status || timeout) { 237 err = timeout ? -ETIMEDOUT : 238 ionic_error_to_errno(ctx->comp.comp.status); 239 240 if (do_msg) 241 ionic_adminq_netdev_err_print(lif, ctx->cmd.cmd.opcode, 242 ctx->comp.comp.status, err); 243 244 if (timeout) 245 ionic_adminq_flush(lif); 246 } 247 248 return err; 249 } 250 251 bool ionic_notifyq_service(struct ionic_cq *cq) 252 { 253 struct ionic_deferred_work *work; 254 union ionic_notifyq_comp *comp; 255 struct net_device *netdev; 256 struct ionic_queue *q; 257 struct ionic_lif *lif; 258 u64 eid; 259 260 comp = &((union ionic_notifyq_comp *)cq->base)[cq->tail_idx]; 261 262 q = cq->bound_q; 263 lif = q->admin_info[0].ctx; 264 netdev = lif->netdev; 265 eid = le64_to_cpu(comp->event.eid); 266 267 /* Have we run out of new completions to process? */ 268 if ((s64)(eid - lif->last_eid) <= 0) 269 return false; 270 271 lif->last_eid = eid; 272 273 dev_dbg(lif->ionic->dev, "notifyq event:\n"); 274 dynamic_hex_dump("event ", DUMP_PREFIX_OFFSET, 16, 1, 275 comp, sizeof(*comp), true); 276 277 switch (le16_to_cpu(comp->event.ecode)) { 278 case IONIC_EVENT_LINK_CHANGE: 279 ionic_link_status_check_request(lif, CAN_NOT_SLEEP); 280 break; 281 case IONIC_EVENT_RESET: 282 if (lif->ionic->idev.fw_status_ready && 283 !test_bit(IONIC_LIF_F_FW_RESET, lif->state) && 284 !test_and_set_bit(IONIC_LIF_F_FW_STOPPING, lif->state)) { 285 work = kzalloc(sizeof(*work), GFP_ATOMIC); 286 if (!work) { 287 netdev_err(lif->netdev, "Reset event dropped\n"); 288 clear_bit(IONIC_LIF_F_FW_STOPPING, lif->state); 289 } else { 290 work->type = IONIC_DW_TYPE_LIF_RESET; 291 ionic_lif_deferred_enqueue(lif, work); 292 } 293 } 294 break; 295 default: 296 netdev_warn(netdev, "Notifyq event ecode=%d eid=%lld\n", 297 comp->event.ecode, eid); 298 break; 299 } 300 301 return true; 302 } 303 304 bool ionic_adminq_service(struct ionic_cq *cq) 305 { 306 struct ionic_admin_desc_info *desc_info; 307 struct ionic_queue *q = cq->bound_q; 308 struct ionic_admin_comp *comp; 309 u16 index; 310 311 comp = &((struct ionic_admin_comp *)cq->base)[cq->tail_idx]; 312 313 if (!color_match(comp->color, cq->done_color)) 314 return false; 315 316 /* check for empty queue */ 317 if (q->tail_idx == q->head_idx) 318 return false; 319 320 do { 321 desc_info = &q->admin_info[q->tail_idx]; 322 index = q->tail_idx; 323 q->tail_idx = (q->tail_idx + 1) & (q->num_descs - 1); 324 if (likely(desc_info->ctx)) { 325 struct ionic_admin_ctx *ctx = desc_info->ctx; 326 327 memcpy(&ctx->comp, comp, sizeof(*comp)); 328 329 dev_dbg(q->dev, "comp admin queue command:\n"); 330 dynamic_hex_dump("comp ", DUMP_PREFIX_OFFSET, 16, 1, 331 &ctx->comp, sizeof(ctx->comp), true); 332 complete_all(&ctx->work); 333 desc_info->ctx = NULL; 334 } 335 } while (index != le16_to_cpu(comp->comp_index)); 336 337 return true; 338 } 339 340 bool ionic_adminq_poke_doorbell(struct ionic_queue *q) 341 { 342 struct ionic_lif *lif = q->lif; 343 unsigned long now, then, dif; 344 unsigned long irqflags; 345 346 spin_lock_irqsave(&lif->adminq_lock, irqflags); 347 348 if (q->tail_idx == q->head_idx) { 349 spin_unlock_irqrestore(&lif->adminq_lock, irqflags); 350 return false; 351 } 352 353 now = READ_ONCE(jiffies); 354 then = q->dbell_jiffies; 355 dif = now - then; 356 357 if (dif > q->dbell_deadline) { 358 ionic_dbell_ring(q->lif->kern_dbpage, q->hw_type, 359 q->dbval | q->head_idx); 360 361 q->dbell_jiffies = now; 362 } 363 364 spin_unlock_irqrestore(&lif->adminq_lock, irqflags); 365 366 return true; 367 } 368 369 int ionic_adminq_post(struct ionic_lif *lif, struct ionic_admin_ctx *ctx) 370 { 371 struct ionic_admin_desc_info *desc_info; 372 struct ionic_admin_cmd *desc; 373 unsigned long irqflags; 374 struct ionic_queue *q; 375 int err = 0; 376 377 spin_lock_irqsave(&lif->adminq_lock, irqflags); 378 if (!lif->adminqcq) { 379 spin_unlock_irqrestore(&lif->adminq_lock, irqflags); 380 return -EIO; 381 } 382 383 q = &lif->adminqcq->q; 384 385 if (!ionic_q_has_space(q, 1)) { 386 err = -ENOSPC; 387 goto err_out; 388 } 389 390 err = ionic_heartbeat_check(lif->ionic); 391 if (err) 392 goto err_out; 393 394 desc_info = &q->admin_info[q->head_idx]; 395 desc_info->ctx = ctx; 396 397 desc = &q->adminq[q->head_idx]; 398 memcpy(desc, &ctx->cmd, sizeof(ctx->cmd)); 399 400 dev_dbg(&lif->netdev->dev, "post admin queue command:\n"); 401 dynamic_hex_dump("cmd ", DUMP_PREFIX_OFFSET, 16, 1, 402 &ctx->cmd, sizeof(ctx->cmd), true); 403 404 ionic_q_post(q, true); 405 406 err_out: 407 spin_unlock_irqrestore(&lif->adminq_lock, irqflags); 408 409 return err; 410 } 411 412 int ionic_adminq_wait(struct ionic_lif *lif, struct ionic_admin_ctx *ctx, 413 const int err, const bool do_msg) 414 { 415 struct net_device *netdev = lif->netdev; 416 unsigned long time_limit; 417 unsigned long time_start; 418 unsigned long time_done; 419 unsigned long remaining; 420 const char *name; 421 422 name = ionic_opcode_to_str(ctx->cmd.cmd.opcode); 423 424 if (err) { 425 if (do_msg && !test_bit(IONIC_LIF_F_FW_RESET, lif->state)) 426 netdev_err(netdev, "Posting of %s (%d) failed: %d\n", 427 name, ctx->cmd.cmd.opcode, err); 428 ctx->comp.comp.status = IONIC_RC_ERROR; 429 return err; 430 } 431 432 time_start = jiffies; 433 time_limit = time_start + HZ * (ulong)DEVCMD_TIMEOUT; 434 do { 435 remaining = wait_for_completion_timeout(&ctx->work, 436 IONIC_ADMINQ_TIME_SLICE); 437 438 /* check for done */ 439 if (remaining) 440 break; 441 442 /* force a check of FW status and break out if FW reset */ 443 ionic_heartbeat_check(lif->ionic); 444 if ((test_bit(IONIC_LIF_F_FW_RESET, lif->state) && 445 !lif->ionic->idev.fw_status_ready) || 446 test_bit(IONIC_LIF_F_FW_STOPPING, lif->state)) { 447 if (do_msg) 448 netdev_warn(netdev, "%s (%d) interrupted, FW in reset\n", 449 name, ctx->cmd.cmd.opcode); 450 ctx->comp.comp.status = IONIC_RC_ERROR; 451 return -ENXIO; 452 } 453 454 } while (time_before(jiffies, time_limit)); 455 time_done = jiffies; 456 457 dev_dbg(lif->ionic->dev, "%s: elapsed %d msecs\n", 458 __func__, jiffies_to_msecs(time_done - time_start)); 459 460 return ionic_adminq_check_err(lif, ctx, 461 time_after_eq(time_done, time_limit), 462 do_msg); 463 } 464 465 static int __ionic_adminq_post_wait(struct ionic_lif *lif, 466 struct ionic_admin_ctx *ctx, 467 const bool do_msg) 468 { 469 int err; 470 471 if (!ionic_is_fw_running(&lif->ionic->idev)) 472 return 0; 473 474 err = ionic_adminq_post(lif, ctx); 475 476 return ionic_adminq_wait(lif, ctx, err, do_msg); 477 } 478 479 int ionic_adminq_post_wait(struct ionic_lif *lif, struct ionic_admin_ctx *ctx) 480 { 481 return __ionic_adminq_post_wait(lif, ctx, true); 482 } 483 484 int ionic_adminq_post_wait_nomsg(struct ionic_lif *lif, struct ionic_admin_ctx *ctx) 485 { 486 return __ionic_adminq_post_wait(lif, ctx, false); 487 } 488 489 static void ionic_dev_cmd_clean(struct ionic *ionic) 490 { 491 struct ionic_dev *idev = &ionic->idev; 492 493 if (!idev->dev_cmd_regs) 494 return; 495 496 iowrite32(0, &idev->dev_cmd_regs->doorbell); 497 memset_io(&idev->dev_cmd_regs->cmd, 0, sizeof(idev->dev_cmd_regs->cmd)); 498 } 499 500 void ionic_dev_cmd_dev_err_print(struct ionic *ionic, u8 opcode, u8 status, 501 int err) 502 { 503 const char *stat_str; 504 505 stat_str = (err == -ETIMEDOUT) ? "TIMEOUT" : 506 ionic_error_to_str(status); 507 508 dev_err(ionic->dev, "DEV_CMD %s (%d) error, %s (%d) failed\n", 509 ionic_opcode_to_str(opcode), opcode, stat_str, err); 510 } 511 512 static int __ionic_dev_cmd_wait(struct ionic *ionic, unsigned long max_seconds, 513 const bool do_msg) 514 { 515 struct ionic_dev *idev = &ionic->idev; 516 unsigned long start_time; 517 unsigned long max_wait; 518 unsigned long duration; 519 int done = 0; 520 bool fw_up; 521 int opcode; 522 int err; 523 524 /* Wait for dev cmd to complete, retrying if we get EAGAIN, 525 * but don't wait any longer than max_seconds. 526 */ 527 max_wait = jiffies + (max_seconds * HZ); 528 try_again: 529 opcode = idev->opcode; 530 start_time = jiffies; 531 for (fw_up = ionic_is_fw_running(idev); 532 !done && fw_up && time_before(jiffies, max_wait); 533 fw_up = ionic_is_fw_running(idev)) { 534 done = ionic_dev_cmd_done(idev); 535 if (done) 536 break; 537 usleep_range(100, 200); 538 } 539 duration = jiffies - start_time; 540 541 dev_dbg(ionic->dev, "DEVCMD %s (%d) done=%d took %ld secs (%ld jiffies)\n", 542 ionic_opcode_to_str(opcode), opcode, 543 done, duration / HZ, duration); 544 545 if (!done && !fw_up) { 546 ionic_dev_cmd_clean(ionic); 547 dev_warn(ionic->dev, "DEVCMD %s (%d) interrupted - FW is down\n", 548 ionic_opcode_to_str(opcode), opcode); 549 return -ENXIO; 550 } 551 552 if (!done && !time_before(jiffies, max_wait)) { 553 ionic_dev_cmd_clean(ionic); 554 dev_warn(ionic->dev, "DEVCMD %s (%d) timeout after %ld secs\n", 555 ionic_opcode_to_str(opcode), opcode, max_seconds); 556 return -ETIMEDOUT; 557 } 558 559 err = ionic_dev_cmd_status(&ionic->idev); 560 if (err) { 561 if (err == IONIC_RC_EAGAIN && 562 time_before(jiffies, (max_wait - HZ))) { 563 dev_dbg(ionic->dev, "DEV_CMD %s (%d), %s (%d) retrying...\n", 564 ionic_opcode_to_str(opcode), opcode, 565 ionic_error_to_str(err), err); 566 567 iowrite32(0, &idev->dev_cmd_regs->done); 568 msleep(1000); 569 iowrite32(1, &idev->dev_cmd_regs->doorbell); 570 goto try_again; 571 } 572 573 if (!(opcode == IONIC_CMD_FW_CONTROL && err == IONIC_RC_EAGAIN)) 574 if (do_msg) 575 ionic_dev_cmd_dev_err_print(ionic, opcode, err, 576 ionic_error_to_errno(err)); 577 578 return ionic_error_to_errno(err); 579 } 580 581 ionic_dev_cmd_clean(ionic); 582 583 return 0; 584 } 585 586 int ionic_dev_cmd_wait(struct ionic *ionic, unsigned long max_seconds) 587 { 588 return __ionic_dev_cmd_wait(ionic, max_seconds, true); 589 } 590 591 int ionic_dev_cmd_wait_nomsg(struct ionic *ionic, unsigned long max_seconds) 592 { 593 return __ionic_dev_cmd_wait(ionic, max_seconds, false); 594 } 595 596 int ionic_setup(struct ionic *ionic) 597 { 598 int err; 599 600 err = ionic_dev_setup(ionic); 601 if (err) 602 return err; 603 ionic_reset(ionic); 604 605 return 0; 606 } 607 608 int ionic_identify(struct ionic *ionic) 609 { 610 struct ionic_identity *ident = &ionic->ident; 611 struct ionic_dev *idev = &ionic->idev; 612 size_t sz; 613 int err; 614 615 memset(ident, 0, sizeof(*ident)); 616 617 ident->drv.os_type = cpu_to_le32(IONIC_OS_TYPE_LINUX); 618 strscpy(ident->drv.driver_ver_str, UTS_RELEASE, 619 sizeof(ident->drv.driver_ver_str)); 620 621 mutex_lock(&ionic->dev_cmd_lock); 622 623 sz = min(sizeof(ident->drv), sizeof(idev->dev_cmd_regs->data)); 624 memcpy_toio(&idev->dev_cmd_regs->data, &ident->drv, sz); 625 626 ionic_dev_cmd_identify(idev, IONIC_DEV_IDENTITY_VERSION_2); 627 err = ionic_dev_cmd_wait(ionic, DEVCMD_TIMEOUT); 628 if (!err) { 629 sz = min(sizeof(ident->dev), sizeof(idev->dev_cmd_regs->data)); 630 memcpy_fromio(&ident->dev, &idev->dev_cmd_regs->data, sz); 631 } 632 mutex_unlock(&ionic->dev_cmd_lock); 633 634 if (err) { 635 dev_err(ionic->dev, "Cannot identify ionic: %d\n", err); 636 goto err_out; 637 } 638 639 if (isprint(idev->dev_info.fw_version[0]) && 640 isascii(idev->dev_info.fw_version[0])) 641 dev_info(ionic->dev, "FW: %.*s\n", 642 (int)(sizeof(idev->dev_info.fw_version) - 1), 643 idev->dev_info.fw_version); 644 else 645 dev_info(ionic->dev, "FW: (invalid string) 0x%02x 0x%02x 0x%02x 0x%02x ...\n", 646 (u8)idev->dev_info.fw_version[0], 647 (u8)idev->dev_info.fw_version[1], 648 (u8)idev->dev_info.fw_version[2], 649 (u8)idev->dev_info.fw_version[3]); 650 651 err = ionic_lif_identify(ionic, IONIC_LIF_TYPE_CLASSIC, 652 &ionic->ident.lif); 653 if (err) { 654 dev_err(ionic->dev, "Cannot identify LIFs: %d\n", err); 655 goto err_out; 656 } 657 658 return 0; 659 660 err_out: 661 return err; 662 } 663 664 int ionic_init(struct ionic *ionic) 665 { 666 struct ionic_dev *idev = &ionic->idev; 667 int err; 668 669 mutex_lock(&ionic->dev_cmd_lock); 670 ionic_dev_cmd_init(idev); 671 err = ionic_dev_cmd_wait(ionic, DEVCMD_TIMEOUT); 672 mutex_unlock(&ionic->dev_cmd_lock); 673 674 return err; 675 } 676 677 int ionic_reset(struct ionic *ionic) 678 { 679 struct ionic_dev *idev = &ionic->idev; 680 int err; 681 682 if (!ionic_is_fw_running(idev)) 683 return 0; 684 685 mutex_lock(&ionic->dev_cmd_lock); 686 ionic_dev_cmd_reset(idev); 687 err = ionic_dev_cmd_wait(ionic, DEVCMD_TIMEOUT); 688 mutex_unlock(&ionic->dev_cmd_lock); 689 690 return err; 691 } 692 693 int ionic_port_identify(struct ionic *ionic) 694 { 695 struct ionic_identity *ident = &ionic->ident; 696 struct ionic_dev *idev = &ionic->idev; 697 size_t sz; 698 int err; 699 700 mutex_lock(&ionic->dev_cmd_lock); 701 702 ionic_dev_cmd_port_identify(idev); 703 err = ionic_dev_cmd_wait(ionic, DEVCMD_TIMEOUT); 704 if (!err) { 705 sz = min(sizeof(ident->port), sizeof(idev->dev_cmd_regs->data)); 706 memcpy_fromio(&ident->port, &idev->dev_cmd_regs->data, sz); 707 } 708 709 mutex_unlock(&ionic->dev_cmd_lock); 710 711 return err; 712 } 713 714 int ionic_port_init(struct ionic *ionic) 715 { 716 struct ionic_identity *ident = &ionic->ident; 717 struct ionic_dev *idev = &ionic->idev; 718 size_t sz; 719 int err; 720 721 if (!idev->port_info) { 722 idev->port_info_sz = ALIGN(sizeof(*idev->port_info), PAGE_SIZE); 723 idev->port_info = dma_alloc_coherent(ionic->dev, 724 idev->port_info_sz, 725 &idev->port_info_pa, 726 GFP_KERNEL); 727 if (!idev->port_info) 728 return -ENOMEM; 729 } 730 731 sz = min(sizeof(ident->port.config), sizeof(idev->dev_cmd_regs->data)); 732 733 mutex_lock(&ionic->dev_cmd_lock); 734 735 memcpy_toio(&idev->dev_cmd_regs->data, &ident->port.config, sz); 736 ionic_dev_cmd_port_init(idev); 737 err = ionic_dev_cmd_wait(ionic, DEVCMD_TIMEOUT); 738 739 ionic_dev_cmd_port_state(&ionic->idev, IONIC_PORT_ADMIN_STATE_UP); 740 ionic_dev_cmd_wait(ionic, DEVCMD_TIMEOUT); 741 742 mutex_unlock(&ionic->dev_cmd_lock); 743 if (err) { 744 dev_err(ionic->dev, "Failed to init port\n"); 745 dma_free_coherent(ionic->dev, idev->port_info_sz, 746 idev->port_info, idev->port_info_pa); 747 idev->port_info = NULL; 748 idev->port_info_pa = 0; 749 } 750 751 return err; 752 } 753 754 int ionic_port_reset(struct ionic *ionic) 755 { 756 struct ionic_dev *idev = &ionic->idev; 757 int err = 0; 758 759 if (!idev->port_info) 760 return 0; 761 762 if (ionic_is_fw_running(idev)) { 763 mutex_lock(&ionic->dev_cmd_lock); 764 ionic_dev_cmd_port_reset(idev); 765 err = ionic_dev_cmd_wait(ionic, DEVCMD_TIMEOUT); 766 mutex_unlock(&ionic->dev_cmd_lock); 767 } 768 769 dma_free_coherent(ionic->dev, idev->port_info_sz, 770 idev->port_info, idev->port_info_pa); 771 772 idev->port_info = NULL; 773 idev->port_info_pa = 0; 774 775 return err; 776 } 777 778 static int __init ionic_init_module(void) 779 { 780 int ret; 781 782 ionic_debugfs_create(); 783 ret = ionic_bus_register_driver(); 784 if (ret) 785 ionic_debugfs_destroy(); 786 787 return ret; 788 } 789 790 static void __exit ionic_cleanup_module(void) 791 { 792 ionic_bus_unregister_driver(); 793 ionic_debugfs_destroy(); 794 795 pr_info("%s removed\n", IONIC_DRV_NAME); 796 } 797 798 module_init(ionic_init_module); 799 module_exit(ionic_cleanup_module); 800