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