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 bool ionic_adminq_poke_doorbell(struct ionic_queue *q) 293 { 294 struct ionic_lif *lif = q->lif; 295 unsigned long now, then, dif; 296 unsigned long irqflags; 297 298 spin_lock_irqsave(&lif->adminq_lock, irqflags); 299 300 if (q->tail_idx == q->head_idx) { 301 spin_unlock_irqrestore(&lif->adminq_lock, irqflags); 302 return false; 303 } 304 305 now = READ_ONCE(jiffies); 306 then = q->dbell_jiffies; 307 dif = now - then; 308 309 if (dif > q->dbell_deadline) { 310 ionic_dbell_ring(q->lif->kern_dbpage, q->hw_type, 311 q->dbval | q->head_idx); 312 313 q->dbell_jiffies = now; 314 } 315 316 spin_unlock_irqrestore(&lif->adminq_lock, irqflags); 317 318 return true; 319 } 320 321 int ionic_adminq_post(struct ionic_lif *lif, struct ionic_admin_ctx *ctx) 322 { 323 struct ionic_desc_info *desc_info; 324 unsigned long irqflags; 325 struct ionic_queue *q; 326 int err = 0; 327 328 spin_lock_irqsave(&lif->adminq_lock, irqflags); 329 if (!lif->adminqcq) { 330 spin_unlock_irqrestore(&lif->adminq_lock, irqflags); 331 return -EIO; 332 } 333 334 q = &lif->adminqcq->q; 335 336 if (!ionic_q_has_space(q, 1)) { 337 err = -ENOSPC; 338 goto err_out; 339 } 340 341 err = ionic_heartbeat_check(lif->ionic); 342 if (err) 343 goto err_out; 344 345 desc_info = &q->info[q->head_idx]; 346 memcpy(desc_info->desc, &ctx->cmd, sizeof(ctx->cmd)); 347 348 dev_dbg(&lif->netdev->dev, "post admin queue command:\n"); 349 dynamic_hex_dump("cmd ", DUMP_PREFIX_OFFSET, 16, 1, 350 &ctx->cmd, sizeof(ctx->cmd), true); 351 352 ionic_q_post(q, true, ionic_adminq_cb, ctx); 353 354 err_out: 355 spin_unlock_irqrestore(&lif->adminq_lock, irqflags); 356 357 return err; 358 } 359 360 int ionic_adminq_wait(struct ionic_lif *lif, struct ionic_admin_ctx *ctx, 361 const int err, const bool do_msg) 362 { 363 struct net_device *netdev = lif->netdev; 364 unsigned long time_limit; 365 unsigned long time_start; 366 unsigned long time_done; 367 unsigned long remaining; 368 const char *name; 369 370 name = ionic_opcode_to_str(ctx->cmd.cmd.opcode); 371 372 if (err) { 373 if (do_msg && !test_bit(IONIC_LIF_F_FW_RESET, lif->state)) 374 netdev_err(netdev, "Posting of %s (%d) failed: %d\n", 375 name, ctx->cmd.cmd.opcode, err); 376 ctx->comp.comp.status = IONIC_RC_ERROR; 377 return err; 378 } 379 380 time_start = jiffies; 381 time_limit = time_start + HZ * (ulong)DEVCMD_TIMEOUT; 382 do { 383 remaining = wait_for_completion_timeout(&ctx->work, 384 IONIC_ADMINQ_TIME_SLICE); 385 386 /* check for done */ 387 if (remaining) 388 break; 389 390 /* force a check of FW status and break out if FW reset */ 391 ionic_heartbeat_check(lif->ionic); 392 if ((test_bit(IONIC_LIF_F_FW_RESET, lif->state) && 393 !lif->ionic->idev.fw_status_ready) || 394 test_bit(IONIC_LIF_F_FW_STOPPING, lif->state)) { 395 if (do_msg) 396 netdev_warn(netdev, "%s (%d) interrupted, FW in reset\n", 397 name, ctx->cmd.cmd.opcode); 398 ctx->comp.comp.status = IONIC_RC_ERROR; 399 return -ENXIO; 400 } 401 402 } while (time_before(jiffies, time_limit)); 403 time_done = jiffies; 404 405 dev_dbg(lif->ionic->dev, "%s: elapsed %d msecs\n", 406 __func__, jiffies_to_msecs(time_done - time_start)); 407 408 return ionic_adminq_check_err(lif, ctx, 409 time_after_eq(time_done, time_limit), 410 do_msg); 411 } 412 413 int ionic_adminq_post_wait(struct ionic_lif *lif, struct ionic_admin_ctx *ctx) 414 { 415 int err; 416 417 err = ionic_adminq_post(lif, ctx); 418 419 return ionic_adminq_wait(lif, ctx, err, true); 420 } 421 422 int ionic_adminq_post_wait_nomsg(struct ionic_lif *lif, struct ionic_admin_ctx *ctx) 423 { 424 int err; 425 426 err = ionic_adminq_post(lif, ctx); 427 428 return ionic_adminq_wait(lif, ctx, err, false); 429 } 430 431 static void ionic_dev_cmd_clean(struct ionic *ionic) 432 { 433 struct ionic_dev *idev = &ionic->idev; 434 435 iowrite32(0, &idev->dev_cmd_regs->doorbell); 436 memset_io(&idev->dev_cmd_regs->cmd, 0, sizeof(idev->dev_cmd_regs->cmd)); 437 } 438 439 void ionic_dev_cmd_dev_err_print(struct ionic *ionic, u8 opcode, u8 status, 440 int err) 441 { 442 const char *stat_str; 443 444 stat_str = (err == -ETIMEDOUT) ? "TIMEOUT" : 445 ionic_error_to_str(status); 446 447 dev_err(ionic->dev, "DEV_CMD %s (%d) error, %s (%d) failed\n", 448 ionic_opcode_to_str(opcode), opcode, stat_str, err); 449 } 450 451 static int __ionic_dev_cmd_wait(struct ionic *ionic, unsigned long max_seconds, 452 const bool do_msg) 453 { 454 struct ionic_dev *idev = &ionic->idev; 455 unsigned long start_time; 456 unsigned long max_wait; 457 unsigned long duration; 458 int done = 0; 459 bool fw_up; 460 int opcode; 461 int err; 462 463 /* Wait for dev cmd to complete, retrying if we get EAGAIN, 464 * but don't wait any longer than max_seconds. 465 */ 466 max_wait = jiffies + (max_seconds * HZ); 467 try_again: 468 opcode = readb(&idev->dev_cmd_regs->cmd.cmd.opcode); 469 start_time = jiffies; 470 for (fw_up = ionic_is_fw_running(idev); 471 !done && fw_up && time_before(jiffies, max_wait); 472 fw_up = ionic_is_fw_running(idev)) { 473 done = ionic_dev_cmd_done(idev); 474 if (done) 475 break; 476 usleep_range(100, 200); 477 } 478 duration = jiffies - start_time; 479 480 dev_dbg(ionic->dev, "DEVCMD %s (%d) done=%d took %ld secs (%ld jiffies)\n", 481 ionic_opcode_to_str(opcode), opcode, 482 done, duration / HZ, duration); 483 484 if (!done && !fw_up) { 485 ionic_dev_cmd_clean(ionic); 486 dev_warn(ionic->dev, "DEVCMD %s (%d) interrupted - FW is down\n", 487 ionic_opcode_to_str(opcode), opcode); 488 return -ENXIO; 489 } 490 491 if (!done && !time_before(jiffies, max_wait)) { 492 ionic_dev_cmd_clean(ionic); 493 dev_warn(ionic->dev, "DEVCMD %s (%d) timeout after %ld secs\n", 494 ionic_opcode_to_str(opcode), opcode, max_seconds); 495 return -ETIMEDOUT; 496 } 497 498 err = ionic_dev_cmd_status(&ionic->idev); 499 if (err) { 500 if (err == IONIC_RC_EAGAIN && 501 time_before(jiffies, (max_wait - HZ))) { 502 dev_dbg(ionic->dev, "DEV_CMD %s (%d), %s (%d) retrying...\n", 503 ionic_opcode_to_str(opcode), opcode, 504 ionic_error_to_str(err), err); 505 506 iowrite32(0, &idev->dev_cmd_regs->done); 507 msleep(1000); 508 iowrite32(1, &idev->dev_cmd_regs->doorbell); 509 goto try_again; 510 } 511 512 if (!(opcode == IONIC_CMD_FW_CONTROL && err == IONIC_RC_EAGAIN)) 513 if (do_msg) 514 ionic_dev_cmd_dev_err_print(ionic, opcode, err, 515 ionic_error_to_errno(err)); 516 517 return ionic_error_to_errno(err); 518 } 519 520 ionic_dev_cmd_clean(ionic); 521 522 return 0; 523 } 524 525 int ionic_dev_cmd_wait(struct ionic *ionic, unsigned long max_seconds) 526 { 527 return __ionic_dev_cmd_wait(ionic, max_seconds, true); 528 } 529 530 int ionic_dev_cmd_wait_nomsg(struct ionic *ionic, unsigned long max_seconds) 531 { 532 return __ionic_dev_cmd_wait(ionic, max_seconds, false); 533 } 534 535 int ionic_setup(struct ionic *ionic) 536 { 537 int err; 538 539 err = ionic_dev_setup(ionic); 540 if (err) 541 return err; 542 ionic_reset(ionic); 543 544 return 0; 545 } 546 547 int ionic_identify(struct ionic *ionic) 548 { 549 struct ionic_identity *ident = &ionic->ident; 550 struct ionic_dev *idev = &ionic->idev; 551 size_t sz; 552 int err; 553 554 memset(ident, 0, sizeof(*ident)); 555 556 ident->drv.os_type = cpu_to_le32(IONIC_OS_TYPE_LINUX); 557 strncpy(ident->drv.driver_ver_str, UTS_RELEASE, 558 sizeof(ident->drv.driver_ver_str) - 1); 559 560 mutex_lock(&ionic->dev_cmd_lock); 561 562 sz = min(sizeof(ident->drv), sizeof(idev->dev_cmd_regs->data)); 563 memcpy_toio(&idev->dev_cmd_regs->data, &ident->drv, sz); 564 565 ionic_dev_cmd_identify(idev, IONIC_DEV_IDENTITY_VERSION_2); 566 err = ionic_dev_cmd_wait(ionic, DEVCMD_TIMEOUT); 567 if (!err) { 568 sz = min(sizeof(ident->dev), sizeof(idev->dev_cmd_regs->data)); 569 memcpy_fromio(&ident->dev, &idev->dev_cmd_regs->data, sz); 570 } 571 mutex_unlock(&ionic->dev_cmd_lock); 572 573 if (err) { 574 dev_err(ionic->dev, "Cannot identify ionic: %d\n", err); 575 goto err_out; 576 } 577 578 if (isprint(idev->dev_info.fw_version[0]) && 579 isascii(idev->dev_info.fw_version[0])) 580 dev_info(ionic->dev, "FW: %.*s\n", 581 (int)(sizeof(idev->dev_info.fw_version) - 1), 582 idev->dev_info.fw_version); 583 else 584 dev_info(ionic->dev, "FW: (invalid string) 0x%02x 0x%02x 0x%02x 0x%02x ...\n", 585 (u8)idev->dev_info.fw_version[0], 586 (u8)idev->dev_info.fw_version[1], 587 (u8)idev->dev_info.fw_version[2], 588 (u8)idev->dev_info.fw_version[3]); 589 590 err = ionic_lif_identify(ionic, IONIC_LIF_TYPE_CLASSIC, 591 &ionic->ident.lif); 592 if (err) { 593 dev_err(ionic->dev, "Cannot identify LIFs: %d\n", err); 594 goto err_out; 595 } 596 597 return 0; 598 599 err_out: 600 return err; 601 } 602 603 int ionic_init(struct ionic *ionic) 604 { 605 struct ionic_dev *idev = &ionic->idev; 606 int err; 607 608 mutex_lock(&ionic->dev_cmd_lock); 609 ionic_dev_cmd_init(idev); 610 err = ionic_dev_cmd_wait(ionic, DEVCMD_TIMEOUT); 611 mutex_unlock(&ionic->dev_cmd_lock); 612 613 return err; 614 } 615 616 int ionic_reset(struct ionic *ionic) 617 { 618 struct ionic_dev *idev = &ionic->idev; 619 int err; 620 621 if (!ionic_is_fw_running(idev)) 622 return 0; 623 624 mutex_lock(&ionic->dev_cmd_lock); 625 ionic_dev_cmd_reset(idev); 626 err = ionic_dev_cmd_wait(ionic, DEVCMD_TIMEOUT); 627 mutex_unlock(&ionic->dev_cmd_lock); 628 629 return err; 630 } 631 632 int ionic_port_identify(struct ionic *ionic) 633 { 634 struct ionic_identity *ident = &ionic->ident; 635 struct ionic_dev *idev = &ionic->idev; 636 size_t sz; 637 int err; 638 639 mutex_lock(&ionic->dev_cmd_lock); 640 641 ionic_dev_cmd_port_identify(idev); 642 err = ionic_dev_cmd_wait(ionic, DEVCMD_TIMEOUT); 643 if (!err) { 644 sz = min(sizeof(ident->port), sizeof(idev->dev_cmd_regs->data)); 645 memcpy_fromio(&ident->port, &idev->dev_cmd_regs->data, sz); 646 } 647 648 mutex_unlock(&ionic->dev_cmd_lock); 649 650 return err; 651 } 652 653 int ionic_port_init(struct ionic *ionic) 654 { 655 struct ionic_identity *ident = &ionic->ident; 656 struct ionic_dev *idev = &ionic->idev; 657 size_t sz; 658 int err; 659 660 if (!idev->port_info) { 661 idev->port_info_sz = ALIGN(sizeof(*idev->port_info), PAGE_SIZE); 662 idev->port_info = dma_alloc_coherent(ionic->dev, 663 idev->port_info_sz, 664 &idev->port_info_pa, 665 GFP_KERNEL); 666 if (!idev->port_info) 667 return -ENOMEM; 668 } 669 670 sz = min(sizeof(ident->port.config), sizeof(idev->dev_cmd_regs->data)); 671 672 mutex_lock(&ionic->dev_cmd_lock); 673 674 memcpy_toio(&idev->dev_cmd_regs->data, &ident->port.config, sz); 675 ionic_dev_cmd_port_init(idev); 676 err = ionic_dev_cmd_wait(ionic, DEVCMD_TIMEOUT); 677 678 ionic_dev_cmd_port_state(&ionic->idev, IONIC_PORT_ADMIN_STATE_UP); 679 ionic_dev_cmd_wait(ionic, DEVCMD_TIMEOUT); 680 681 mutex_unlock(&ionic->dev_cmd_lock); 682 if (err) { 683 dev_err(ionic->dev, "Failed to init port\n"); 684 dma_free_coherent(ionic->dev, idev->port_info_sz, 685 idev->port_info, idev->port_info_pa); 686 idev->port_info = NULL; 687 idev->port_info_pa = 0; 688 } 689 690 return err; 691 } 692 693 int ionic_port_reset(struct ionic *ionic) 694 { 695 struct ionic_dev *idev = &ionic->idev; 696 int err = 0; 697 698 if (!idev->port_info) 699 return 0; 700 701 if (ionic_is_fw_running(idev)) { 702 mutex_lock(&ionic->dev_cmd_lock); 703 ionic_dev_cmd_port_reset(idev); 704 err = ionic_dev_cmd_wait(ionic, DEVCMD_TIMEOUT); 705 mutex_unlock(&ionic->dev_cmd_lock); 706 } 707 708 dma_free_coherent(ionic->dev, idev->port_info_sz, 709 idev->port_info, idev->port_info_pa); 710 711 idev->port_info = NULL; 712 idev->port_info_pa = 0; 713 714 return err; 715 } 716 717 static int __init ionic_init_module(void) 718 { 719 int ret; 720 721 ionic_debugfs_create(); 722 ret = ionic_bus_register_driver(); 723 if (ret) 724 ionic_debugfs_destroy(); 725 726 return ret; 727 } 728 729 static void __exit ionic_cleanup_module(void) 730 { 731 ionic_bus_unregister_driver(); 732 ionic_debugfs_destroy(); 733 734 pr_info("%s removed\n", IONIC_DRV_NAME); 735 } 736 737 module_init(ionic_init_module); 738 module_exit(ionic_cleanup_module); 739