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("Pensando Systems, Inc"); 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 const char *ionic_vf_attr_to_str(enum ionic_vf_attr attr) 192 { 193 switch (attr) { 194 case IONIC_VF_ATTR_SPOOFCHK: 195 return "IONIC_VF_ATTR_SPOOFCHK"; 196 case IONIC_VF_ATTR_TRUST: 197 return "IONIC_VF_ATTR_TRUST"; 198 case IONIC_VF_ATTR_LINKSTATE: 199 return "IONIC_VF_ATTR_LINKSTATE"; 200 case IONIC_VF_ATTR_MAC: 201 return "IONIC_VF_ATTR_MAC"; 202 case IONIC_VF_ATTR_VLAN: 203 return "IONIC_VF_ATTR_VLAN"; 204 case IONIC_VF_ATTR_RATE: 205 return "IONIC_VF_ATTR_RATE"; 206 case IONIC_VF_ATTR_STATSADDR: 207 return "IONIC_VF_ATTR_STATSADDR"; 208 default: 209 return "IONIC_VF_ATTR_UNKNOWN"; 210 } 211 } 212 213 static void ionic_adminq_flush(struct ionic_lif *lif) 214 { 215 struct ionic_desc_info *desc_info; 216 unsigned long irqflags; 217 struct ionic_queue *q; 218 219 spin_lock_irqsave(&lif->adminq_lock, irqflags); 220 if (!lif->adminqcq) { 221 spin_unlock_irqrestore(&lif->adminq_lock, irqflags); 222 return; 223 } 224 225 q = &lif->adminqcq->q; 226 227 while (q->tail_idx != q->head_idx) { 228 desc_info = &q->info[q->tail_idx]; 229 memset(desc_info->desc, 0, sizeof(union ionic_adminq_cmd)); 230 desc_info->cb = NULL; 231 desc_info->cb_arg = NULL; 232 q->tail_idx = (q->tail_idx + 1) & (q->num_descs - 1); 233 } 234 spin_unlock_irqrestore(&lif->adminq_lock, irqflags); 235 } 236 237 void ionic_adminq_netdev_err_print(struct ionic_lif *lif, u8 opcode, 238 u8 status, int err) 239 { 240 const char *stat_str; 241 242 stat_str = (err == -ETIMEDOUT) ? "TIMEOUT" : 243 ionic_error_to_str(status); 244 245 netdev_err(lif->netdev, "%s (%d) failed: %s (%d)\n", 246 ionic_opcode_to_str(opcode), opcode, stat_str, err); 247 } 248 249 static int ionic_adminq_check_err(struct ionic_lif *lif, 250 struct ionic_admin_ctx *ctx, 251 const bool timeout, 252 const bool do_msg) 253 { 254 int err = 0; 255 256 if (ctx->comp.comp.status || timeout) { 257 err = timeout ? -ETIMEDOUT : 258 ionic_error_to_errno(ctx->comp.comp.status); 259 260 if (do_msg) 261 ionic_adminq_netdev_err_print(lif, ctx->cmd.cmd.opcode, 262 ctx->comp.comp.status, err); 263 264 if (timeout) 265 ionic_adminq_flush(lif); 266 } 267 268 return err; 269 } 270 271 static void ionic_adminq_cb(struct ionic_queue *q, 272 struct ionic_desc_info *desc_info, 273 struct ionic_cq_info *cq_info, void *cb_arg) 274 { 275 struct ionic_admin_ctx *ctx = cb_arg; 276 struct ionic_admin_comp *comp; 277 278 if (!ctx) 279 return; 280 281 comp = cq_info->cq_desc; 282 283 memcpy(&ctx->comp, comp, sizeof(*comp)); 284 285 dev_dbg(q->dev, "comp admin queue command:\n"); 286 dynamic_hex_dump("comp ", DUMP_PREFIX_OFFSET, 16, 1, 287 &ctx->comp, sizeof(ctx->comp), true); 288 289 complete_all(&ctx->work); 290 } 291 292 int ionic_adminq_post(struct ionic_lif *lif, struct ionic_admin_ctx *ctx) 293 { 294 struct ionic_desc_info *desc_info; 295 unsigned long irqflags; 296 struct ionic_queue *q; 297 int err = 0; 298 299 spin_lock_irqsave(&lif->adminq_lock, irqflags); 300 if (!lif->adminqcq) { 301 spin_unlock_irqrestore(&lif->adminq_lock, irqflags); 302 return -EIO; 303 } 304 305 q = &lif->adminqcq->q; 306 307 if (!ionic_q_has_space(q, 1)) { 308 err = -ENOSPC; 309 goto err_out; 310 } 311 312 err = ionic_heartbeat_check(lif->ionic); 313 if (err) 314 goto err_out; 315 316 desc_info = &q->info[q->head_idx]; 317 memcpy(desc_info->desc, &ctx->cmd, sizeof(ctx->cmd)); 318 319 dev_dbg(&lif->netdev->dev, "post admin queue command:\n"); 320 dynamic_hex_dump("cmd ", DUMP_PREFIX_OFFSET, 16, 1, 321 &ctx->cmd, sizeof(ctx->cmd), true); 322 323 ionic_q_post(q, true, ionic_adminq_cb, ctx); 324 325 err_out: 326 spin_unlock_irqrestore(&lif->adminq_lock, irqflags); 327 328 return err; 329 } 330 331 int ionic_adminq_wait(struct ionic_lif *lif, struct ionic_admin_ctx *ctx, 332 const int err, const bool do_msg) 333 { 334 struct net_device *netdev = lif->netdev; 335 unsigned long time_limit; 336 unsigned long time_start; 337 unsigned long time_done; 338 unsigned long remaining; 339 const char *name; 340 341 name = ionic_opcode_to_str(ctx->cmd.cmd.opcode); 342 343 if (err) { 344 if (do_msg && !test_bit(IONIC_LIF_F_FW_RESET, lif->state)) 345 netdev_err(netdev, "Posting of %s (%d) failed: %d\n", 346 name, ctx->cmd.cmd.opcode, err); 347 ctx->comp.comp.status = IONIC_RC_ERROR; 348 return err; 349 } 350 351 time_start = jiffies; 352 time_limit = time_start + HZ * (ulong)DEVCMD_TIMEOUT; 353 do { 354 remaining = wait_for_completion_timeout(&ctx->work, 355 IONIC_ADMINQ_TIME_SLICE); 356 357 /* check for done */ 358 if (remaining) 359 break; 360 361 /* force a check of FW status and break out if FW reset */ 362 (void)ionic_heartbeat_check(lif->ionic); 363 if ((test_bit(IONIC_LIF_F_FW_RESET, lif->state) && 364 !lif->ionic->idev.fw_status_ready) || 365 test_bit(IONIC_LIF_F_FW_STOPPING, lif->state)) { 366 if (do_msg) 367 netdev_warn(netdev, "%s (%d) interrupted, FW in reset\n", 368 name, ctx->cmd.cmd.opcode); 369 ctx->comp.comp.status = IONIC_RC_ERROR; 370 return -ENXIO; 371 } 372 373 } while (time_before(jiffies, time_limit)); 374 time_done = jiffies; 375 376 dev_dbg(lif->ionic->dev, "%s: elapsed %d msecs\n", 377 __func__, jiffies_to_msecs(time_done - time_start)); 378 379 return ionic_adminq_check_err(lif, ctx, 380 time_after_eq(time_done, time_limit), 381 do_msg); 382 } 383 384 int ionic_adminq_post_wait(struct ionic_lif *lif, struct ionic_admin_ctx *ctx) 385 { 386 int err; 387 388 err = ionic_adminq_post(lif, ctx); 389 390 return ionic_adminq_wait(lif, ctx, err, true); 391 } 392 393 int ionic_adminq_post_wait_nomsg(struct ionic_lif *lif, struct ionic_admin_ctx *ctx) 394 { 395 int err; 396 397 err = ionic_adminq_post(lif, ctx); 398 399 return ionic_adminq_wait(lif, ctx, err, false); 400 } 401 402 static void ionic_dev_cmd_clean(struct ionic *ionic) 403 { 404 struct ionic_dev *idev = &ionic->idev; 405 406 iowrite32(0, &idev->dev_cmd_regs->doorbell); 407 memset_io(&idev->dev_cmd_regs->cmd, 0, sizeof(idev->dev_cmd_regs->cmd)); 408 } 409 410 void ionic_dev_cmd_dev_err_print(struct ionic *ionic, u8 opcode, u8 status, 411 int err) 412 { 413 const char *stat_str; 414 415 stat_str = (err == -ETIMEDOUT) ? "TIMEOUT" : 416 ionic_error_to_str(status); 417 418 dev_err(ionic->dev, "DEV_CMD %s (%d) error, %s (%d) failed\n", 419 ionic_opcode_to_str(opcode), opcode, stat_str, err); 420 } 421 422 static int __ionic_dev_cmd_wait(struct ionic *ionic, unsigned long max_seconds, 423 const bool do_msg) 424 { 425 struct ionic_dev *idev = &ionic->idev; 426 unsigned long start_time; 427 unsigned long max_wait; 428 unsigned long duration; 429 int done = 0; 430 bool fw_up; 431 int opcode; 432 int err; 433 434 /* Wait for dev cmd to complete, retrying if we get EAGAIN, 435 * but don't wait any longer than max_seconds. 436 */ 437 max_wait = jiffies + (max_seconds * HZ); 438 try_again: 439 opcode = readb(&idev->dev_cmd_regs->cmd.cmd.opcode); 440 start_time = jiffies; 441 for (fw_up = ionic_is_fw_running(idev); 442 !done && fw_up && time_before(jiffies, max_wait); 443 fw_up = ionic_is_fw_running(idev)) { 444 done = ionic_dev_cmd_done(idev); 445 if (done) 446 break; 447 usleep_range(100, 200); 448 } 449 duration = jiffies - start_time; 450 451 dev_dbg(ionic->dev, "DEVCMD %s (%d) done=%d took %ld secs (%ld jiffies)\n", 452 ionic_opcode_to_str(opcode), opcode, 453 done, duration / HZ, duration); 454 455 if (!done && !fw_up) { 456 ionic_dev_cmd_clean(ionic); 457 dev_warn(ionic->dev, "DEVCMD %s (%d) interrupted - FW is down\n", 458 ionic_opcode_to_str(opcode), opcode); 459 return -ENXIO; 460 } 461 462 if (!done && !time_before(jiffies, max_wait)) { 463 ionic_dev_cmd_clean(ionic); 464 dev_warn(ionic->dev, "DEVCMD %s (%d) timeout after %ld secs\n", 465 ionic_opcode_to_str(opcode), opcode, max_seconds); 466 return -ETIMEDOUT; 467 } 468 469 err = ionic_dev_cmd_status(&ionic->idev); 470 if (err) { 471 if (err == IONIC_RC_EAGAIN && 472 time_before(jiffies, (max_wait - HZ))) { 473 dev_dbg(ionic->dev, "DEV_CMD %s (%d), %s (%d) retrying...\n", 474 ionic_opcode_to_str(opcode), opcode, 475 ionic_error_to_str(err), err); 476 477 iowrite32(0, &idev->dev_cmd_regs->done); 478 msleep(1000); 479 iowrite32(1, &idev->dev_cmd_regs->doorbell); 480 goto try_again; 481 } 482 483 if (!(opcode == IONIC_CMD_FW_CONTROL && err == IONIC_RC_EAGAIN)) 484 if (do_msg) 485 ionic_dev_cmd_dev_err_print(ionic, opcode, err, 486 ionic_error_to_errno(err)); 487 488 return ionic_error_to_errno(err); 489 } 490 491 ionic_dev_cmd_clean(ionic); 492 493 return 0; 494 } 495 496 int ionic_dev_cmd_wait(struct ionic *ionic, unsigned long max_seconds) 497 { 498 return __ionic_dev_cmd_wait(ionic, max_seconds, true); 499 } 500 501 int ionic_dev_cmd_wait_nomsg(struct ionic *ionic, unsigned long max_seconds) 502 { 503 return __ionic_dev_cmd_wait(ionic, max_seconds, false); 504 } 505 506 int ionic_setup(struct ionic *ionic) 507 { 508 int err; 509 510 err = ionic_dev_setup(ionic); 511 if (err) 512 return err; 513 ionic_reset(ionic); 514 515 return 0; 516 } 517 518 int ionic_identify(struct ionic *ionic) 519 { 520 struct ionic_identity *ident = &ionic->ident; 521 struct ionic_dev *idev = &ionic->idev; 522 size_t sz; 523 int err; 524 525 memset(ident, 0, sizeof(*ident)); 526 527 ident->drv.os_type = cpu_to_le32(IONIC_OS_TYPE_LINUX); 528 strncpy(ident->drv.driver_ver_str, UTS_RELEASE, 529 sizeof(ident->drv.driver_ver_str) - 1); 530 531 mutex_lock(&ionic->dev_cmd_lock); 532 533 sz = min(sizeof(ident->drv), sizeof(idev->dev_cmd_regs->data)); 534 memcpy_toio(&idev->dev_cmd_regs->data, &ident->drv, sz); 535 536 ionic_dev_cmd_identify(idev, IONIC_DEV_IDENTITY_VERSION_2); 537 err = ionic_dev_cmd_wait(ionic, DEVCMD_TIMEOUT); 538 if (!err) { 539 sz = min(sizeof(ident->dev), sizeof(idev->dev_cmd_regs->data)); 540 memcpy_fromio(&ident->dev, &idev->dev_cmd_regs->data, sz); 541 } 542 mutex_unlock(&ionic->dev_cmd_lock); 543 544 if (err) { 545 dev_err(ionic->dev, "Cannot identify ionic: %d\n", err); 546 goto err_out; 547 } 548 549 if (isprint(idev->dev_info.fw_version[0]) && 550 isascii(idev->dev_info.fw_version[0])) 551 dev_info(ionic->dev, "FW: %.*s\n", 552 (int)(sizeof(idev->dev_info.fw_version) - 1), 553 idev->dev_info.fw_version); 554 else 555 dev_info(ionic->dev, "FW: (invalid string) 0x%02x 0x%02x 0x%02x 0x%02x ...\n", 556 (u8)idev->dev_info.fw_version[0], 557 (u8)idev->dev_info.fw_version[1], 558 (u8)idev->dev_info.fw_version[2], 559 (u8)idev->dev_info.fw_version[3]); 560 561 err = ionic_lif_identify(ionic, IONIC_LIF_TYPE_CLASSIC, 562 &ionic->ident.lif); 563 if (err) { 564 dev_err(ionic->dev, "Cannot identify LIFs: %d\n", err); 565 goto err_out; 566 } 567 568 return 0; 569 570 err_out: 571 return err; 572 } 573 574 int ionic_init(struct ionic *ionic) 575 { 576 struct ionic_dev *idev = &ionic->idev; 577 int err; 578 579 mutex_lock(&ionic->dev_cmd_lock); 580 ionic_dev_cmd_init(idev); 581 err = ionic_dev_cmd_wait(ionic, DEVCMD_TIMEOUT); 582 mutex_unlock(&ionic->dev_cmd_lock); 583 584 return err; 585 } 586 587 int ionic_reset(struct ionic *ionic) 588 { 589 struct ionic_dev *idev = &ionic->idev; 590 int err; 591 592 if (!ionic_is_fw_running(idev)) 593 return 0; 594 595 mutex_lock(&ionic->dev_cmd_lock); 596 ionic_dev_cmd_reset(idev); 597 err = ionic_dev_cmd_wait(ionic, DEVCMD_TIMEOUT); 598 mutex_unlock(&ionic->dev_cmd_lock); 599 600 return err; 601 } 602 603 int ionic_port_identify(struct ionic *ionic) 604 { 605 struct ionic_identity *ident = &ionic->ident; 606 struct ionic_dev *idev = &ionic->idev; 607 size_t sz; 608 int err; 609 610 mutex_lock(&ionic->dev_cmd_lock); 611 612 ionic_dev_cmd_port_identify(idev); 613 err = ionic_dev_cmd_wait(ionic, DEVCMD_TIMEOUT); 614 if (!err) { 615 sz = min(sizeof(ident->port), sizeof(idev->dev_cmd_regs->data)); 616 memcpy_fromio(&ident->port, &idev->dev_cmd_regs->data, sz); 617 } 618 619 mutex_unlock(&ionic->dev_cmd_lock); 620 621 return err; 622 } 623 624 int ionic_port_init(struct ionic *ionic) 625 { 626 struct ionic_identity *ident = &ionic->ident; 627 struct ionic_dev *idev = &ionic->idev; 628 size_t sz; 629 int err; 630 631 if (!idev->port_info) { 632 idev->port_info_sz = ALIGN(sizeof(*idev->port_info), PAGE_SIZE); 633 idev->port_info = dma_alloc_coherent(ionic->dev, 634 idev->port_info_sz, 635 &idev->port_info_pa, 636 GFP_KERNEL); 637 if (!idev->port_info) 638 return -ENOMEM; 639 } 640 641 sz = min(sizeof(ident->port.config), sizeof(idev->dev_cmd_regs->data)); 642 643 mutex_lock(&ionic->dev_cmd_lock); 644 645 memcpy_toio(&idev->dev_cmd_regs->data, &ident->port.config, sz); 646 ionic_dev_cmd_port_init(idev); 647 err = ionic_dev_cmd_wait(ionic, DEVCMD_TIMEOUT); 648 649 ionic_dev_cmd_port_state(&ionic->idev, IONIC_PORT_ADMIN_STATE_UP); 650 (void)ionic_dev_cmd_wait(ionic, DEVCMD_TIMEOUT); 651 652 mutex_unlock(&ionic->dev_cmd_lock); 653 if (err) { 654 dev_err(ionic->dev, "Failed to init port\n"); 655 dma_free_coherent(ionic->dev, idev->port_info_sz, 656 idev->port_info, idev->port_info_pa); 657 idev->port_info = NULL; 658 idev->port_info_pa = 0; 659 } 660 661 return err; 662 } 663 664 int ionic_port_reset(struct ionic *ionic) 665 { 666 struct ionic_dev *idev = &ionic->idev; 667 int err = 0; 668 669 if (!idev->port_info) 670 return 0; 671 672 if (ionic_is_fw_running(idev)) { 673 mutex_lock(&ionic->dev_cmd_lock); 674 ionic_dev_cmd_port_reset(idev); 675 err = ionic_dev_cmd_wait(ionic, DEVCMD_TIMEOUT); 676 mutex_unlock(&ionic->dev_cmd_lock); 677 } 678 679 dma_free_coherent(ionic->dev, idev->port_info_sz, 680 idev->port_info, idev->port_info_pa); 681 682 idev->port_info = NULL; 683 idev->port_info_pa = 0; 684 685 return err; 686 } 687 688 static int __init ionic_init_module(void) 689 { 690 int ret; 691 692 ionic_debugfs_create(); 693 ret = ionic_bus_register_driver(); 694 if (ret) 695 ionic_debugfs_destroy(); 696 697 return ret; 698 } 699 700 static void __exit ionic_cleanup_module(void) 701 { 702 ionic_bus_unregister_driver(); 703 ionic_debugfs_destroy(); 704 705 pr_info("%s removed\n", IONIC_DRV_NAME); 706 } 707 708 module_init(ionic_init_module); 709 module_exit(ionic_cleanup_module); 710