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1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 122 123 124 125 126 127 128 129 130 131 132 133 134 135 136 137 138 139 140 141 142 143 144 145 146 147 148 149 150 151 152 153 154 155 156 157 158 159 160 161 162 163 164 165 166 167 168 169 170 171 172 173 174 175 176 177 178 179 180 181 182 183 184 185 186 187 188 189 190 191 192 193 194 195 196 197 198 199 200 201 202 203 204 205 206 207 208 209 210 211 212 213 214 215 216 217 218 219 220 221 222 223 224 225 226 227 228 229 230 231 232 233 234 235 236 237 238 239 240 241 242 243 244 245 246 247 248 249 250 251 252 253 254 255 256 257 258 259 260 261 262 263 264 265 266 267 268 269 270 271 272 273 274 275 276 277 278 279 280 281 282 283 284 285 286 287 288 289 290 291 292 293 294 295 296 297 298 299 300 301 302 303 304 305 306 307 308 309 310 311 312 313 314 315 316 317 318 319 320 321 322 323 324 325 326 327 328 329 330 331 332 333 334 335 336 337 338 339 340 341 342 343 344 345 346 347 348 349 350 351 352 353 354 355 356 357 358 359 360 361 362 363 364 365 366 367 368 369 370 371 372 373 374 375 376 377 378 379 380 381 382 383 384 385 386 387 388 389 390 391 392 393 394 395 396 397 398 399 400 401 402 403 404 405 406 407 408 409 410 411 412 413 414 415 416 417 418 419 420 421 422 423 424 425 426 427 428 429 430 431 432 433 434 435 436 437 438 439 440 441 442 443 444 445 446 447 448 449 450 451 452 453 454 455 456 457 458 459 460 461 462 463 464 465 466 467 468 469 470 471 472 473 474 475 476 477 478 479 480 481 482 483 484 485 486 487 488 489 490 491 492 493 494 495 496 497 498 499 500 501 502 503 504 505 506 507 508 509 510 511 512 513 514 515 516 517 518 519 520 521 522 523 524 525 526 527 528 529 530 531 532 533 534 535 536 537 538 539 540 541 542 543 544 545 546 547 548 549 550 551 552 553 554 555 556 557 558 559 560 561 562 563 564 565 566 567 568 569 570 571 572 573 574 575 576 577 578 579 580 581 582 583 584 585 586 587 588 589 590 591 592 593 594 595 596 597 598 599 600 601 602 603 604 605 606 607 608 609 610 611 612 613 | // SPDX-License-Identifier: MIT /* * Copyright © 2016-2019 Intel Corporation */ #include <linux/bitfield.h> #include <linux/firmware.h> #include <drm/drm_print.h> #include "intel_uc_fw.h" #include "intel_uc_fw_abi.h" #include "i915_drv.h" static inline struct intel_gt * ____uc_fw_to_gt(struct intel_uc_fw *uc_fw, enum intel_uc_fw_type type) { if (type == INTEL_UC_FW_TYPE_GUC) return container_of(uc_fw, struct intel_gt, uc.guc.fw); GEM_BUG_ON(type != INTEL_UC_FW_TYPE_HUC); return container_of(uc_fw, struct intel_gt, uc.huc.fw); } static inline struct intel_gt *__uc_fw_to_gt(struct intel_uc_fw *uc_fw) { GEM_BUG_ON(uc_fw->status == INTEL_UC_FIRMWARE_UNINITIALIZED); return ____uc_fw_to_gt(uc_fw, uc_fw->type); } #ifdef CONFIG_DRM_I915_DEBUG_GUC void intel_uc_fw_change_status(struct intel_uc_fw *uc_fw, enum intel_uc_fw_status status) { uc_fw->__status = status; drm_dbg(&__uc_fw_to_gt(uc_fw)->i915->drm, "%s firmware -> %s\n", intel_uc_fw_type_repr(uc_fw->type), status == INTEL_UC_FIRMWARE_SELECTED ? uc_fw->path : intel_uc_fw_status_repr(status)); } #endif /* * List of required GuC and HuC binaries per-platform. * Must be ordered based on platform + revid, from newer to older. * * TGL 35.2 is interface-compatible with 33.0 for previous Gens. The deltas * between 33.0 and 35.2 are only related to new additions to support new Gen12 * features. */ #define INTEL_UC_FIRMWARE_DEFS(fw_def, guc_def, huc_def) \ fw_def(TIGERLAKE, 0, guc_def(tgl, 35, 2, 0), huc_def(tgl, 7, 0, 12)) \ fw_def(ELKHARTLAKE, 0, guc_def(ehl, 33, 0, 4), huc_def(ehl, 9, 0, 0)) \ fw_def(ICELAKE, 0, guc_def(icl, 33, 0, 0), huc_def(icl, 9, 0, 0)) \ fw_def(COFFEELAKE, 5, guc_def(cml, 33, 0, 0), huc_def(cml, 4, 0, 0)) \ fw_def(COFFEELAKE, 0, guc_def(kbl, 33, 0, 0), huc_def(kbl, 4, 0, 0)) \ fw_def(GEMINILAKE, 0, guc_def(glk, 33, 0, 0), huc_def(glk, 4, 0, 0)) \ fw_def(KABYLAKE, 0, guc_def(kbl, 33, 0, 0), huc_def(kbl, 4, 0, 0)) \ fw_def(BROXTON, 0, guc_def(bxt, 33, 0, 0), huc_def(bxt, 2, 0, 0)) \ fw_def(SKYLAKE, 0, guc_def(skl, 33, 0, 0), huc_def(skl, 2, 0, 0)) #define __MAKE_UC_FW_PATH(prefix_, name_, major_, minor_, patch_) \ "i915/" \ __stringify(prefix_) name_ \ __stringify(major_) "." \ __stringify(minor_) "." \ __stringify(patch_) ".bin" #define MAKE_GUC_FW_PATH(prefix_, major_, minor_, patch_) \ __MAKE_UC_FW_PATH(prefix_, "_guc_", major_, minor_, patch_) #define MAKE_HUC_FW_PATH(prefix_, major_, minor_, bld_num_) \ __MAKE_UC_FW_PATH(prefix_, "_huc_", major_, minor_, bld_num_) /* All blobs need to be declared via MODULE_FIRMWARE() */ #define INTEL_UC_MODULE_FW(platform_, revid_, guc_, huc_) \ MODULE_FIRMWARE(guc_); \ MODULE_FIRMWARE(huc_); INTEL_UC_FIRMWARE_DEFS(INTEL_UC_MODULE_FW, MAKE_GUC_FW_PATH, MAKE_HUC_FW_PATH) /* The below structs and macros are used to iterate across the list of blobs */ struct __packed uc_fw_blob { u8 major; u8 minor; const char *path; }; #define UC_FW_BLOB(major_, minor_, path_) \ { .major = major_, .minor = minor_, .path = path_ } #define GUC_FW_BLOB(prefix_, major_, minor_, patch_) \ UC_FW_BLOB(major_, minor_, \ MAKE_GUC_FW_PATH(prefix_, major_, minor_, patch_)) #define HUC_FW_BLOB(prefix_, major_, minor_, bld_num_) \ UC_FW_BLOB(major_, minor_, \ MAKE_HUC_FW_PATH(prefix_, major_, minor_, bld_num_)) struct __packed uc_fw_platform_requirement { enum intel_platform p; u8 rev; /* first platform rev using this FW */ const struct uc_fw_blob blobs[INTEL_UC_FW_NUM_TYPES]; }; #define MAKE_FW_LIST(platform_, revid_, guc_, huc_) \ { \ .p = INTEL_##platform_, \ .rev = revid_, \ .blobs[INTEL_UC_FW_TYPE_GUC] = guc_, \ .blobs[INTEL_UC_FW_TYPE_HUC] = huc_, \ }, static void __uc_fw_auto_select(struct intel_uc_fw *uc_fw, enum intel_platform p, u8 rev) { static const struct uc_fw_platform_requirement fw_blobs[] = { INTEL_UC_FIRMWARE_DEFS(MAKE_FW_LIST, GUC_FW_BLOB, HUC_FW_BLOB) }; int i; for (i = 0; i < ARRAY_SIZE(fw_blobs) && p <= fw_blobs[i].p; i++) { if (p == fw_blobs[i].p && rev >= fw_blobs[i].rev) { const struct uc_fw_blob *blob = &fw_blobs[i].blobs[uc_fw->type]; uc_fw->path = blob->path; uc_fw->major_ver_wanted = blob->major; uc_fw->minor_ver_wanted = blob->minor; break; } } /* make sure the list is ordered as expected */ if (IS_ENABLED(CONFIG_DRM_I915_SELFTEST)) { for (i = 1; i < ARRAY_SIZE(fw_blobs); i++) { if (fw_blobs[i].p < fw_blobs[i - 1].p) continue; if (fw_blobs[i].p == fw_blobs[i - 1].p && fw_blobs[i].rev < fw_blobs[i - 1].rev) continue; pr_err("invalid FW blob order: %s r%u comes before %s r%u\n", intel_platform_name(fw_blobs[i - 1].p), fw_blobs[i - 1].rev, intel_platform_name(fw_blobs[i].p), fw_blobs[i].rev); uc_fw->path = NULL; } } /* We don't want to enable GuC/HuC on pre-Gen11 by default */ if (i915_modparams.enable_guc == -1 && p < INTEL_ICELAKE) uc_fw->path = NULL; } static const char *__override_guc_firmware_path(void) { if (i915_modparams.enable_guc & (ENABLE_GUC_SUBMISSION | ENABLE_GUC_LOAD_HUC)) return i915_modparams.guc_firmware_path; return ""; } static const char *__override_huc_firmware_path(void) { if (i915_modparams.enable_guc & ENABLE_GUC_LOAD_HUC) return i915_modparams.huc_firmware_path; return ""; } static void __uc_fw_user_override(struct intel_uc_fw *uc_fw) { const char *path = NULL; switch (uc_fw->type) { case INTEL_UC_FW_TYPE_GUC: path = __override_guc_firmware_path(); break; case INTEL_UC_FW_TYPE_HUC: path = __override_huc_firmware_path(); break; } if (unlikely(path)) { uc_fw->path = path; uc_fw->user_overridden = true; } } /** * intel_uc_fw_init_early - initialize the uC object and select the firmware * @uc_fw: uC firmware * @type: type of uC * * Initialize the state of our uC object and relevant tracking and select the * firmware to fetch and load. */ void intel_uc_fw_init_early(struct intel_uc_fw *uc_fw, enum intel_uc_fw_type type) { struct drm_i915_private *i915 = ____uc_fw_to_gt(uc_fw, type)->i915; /* * we use FIRMWARE_UNINITIALIZED to detect checks against uc_fw->status * before we're looked at the HW caps to see if we have uc support */ BUILD_BUG_ON(INTEL_UC_FIRMWARE_UNINITIALIZED); GEM_BUG_ON(uc_fw->status); GEM_BUG_ON(uc_fw->path); uc_fw->type = type; if (HAS_GT_UC(i915)) { __uc_fw_auto_select(uc_fw, INTEL_INFO(i915)->platform, INTEL_REVID(i915)); __uc_fw_user_override(uc_fw); } intel_uc_fw_change_status(uc_fw, uc_fw->path ? *uc_fw->path ? INTEL_UC_FIRMWARE_SELECTED : INTEL_UC_FIRMWARE_DISABLED : INTEL_UC_FIRMWARE_NOT_SUPPORTED); } static void __force_fw_fetch_failures(struct intel_uc_fw *uc_fw, int e) { struct drm_i915_private *i915 = __uc_fw_to_gt(uc_fw)->i915; bool user = e == -EINVAL; if (i915_inject_probe_error(i915, e)) { /* non-existing blob */ uc_fw->path = "<invalid>"; uc_fw->user_overridden = user; } else if (i915_inject_probe_error(i915, e)) { /* require next major version */ uc_fw->major_ver_wanted += 1; uc_fw->minor_ver_wanted = 0; uc_fw->user_overridden = user; } else if (i915_inject_probe_error(i915, e)) { /* require next minor version */ uc_fw->minor_ver_wanted += 1; uc_fw->user_overridden = user; } else if (uc_fw->major_ver_wanted && i915_inject_probe_error(i915, e)) { /* require prev major version */ uc_fw->major_ver_wanted -= 1; uc_fw->minor_ver_wanted = 0; uc_fw->user_overridden = user; } else if (uc_fw->minor_ver_wanted && i915_inject_probe_error(i915, e)) { /* require prev minor version - hey, this should work! */ uc_fw->minor_ver_wanted -= 1; uc_fw->user_overridden = user; } else if (user && i915_inject_probe_error(i915, e)) { /* officially unsupported platform */ uc_fw->major_ver_wanted = 0; uc_fw->minor_ver_wanted = 0; uc_fw->user_overridden = true; } } /** * intel_uc_fw_fetch - fetch uC firmware * @uc_fw: uC firmware * * Fetch uC firmware into GEM obj. * * Return: 0 on success, a negative errno code on failure. */ int intel_uc_fw_fetch(struct intel_uc_fw *uc_fw) { struct drm_i915_private *i915 = __uc_fw_to_gt(uc_fw)->i915; struct device *dev = i915->drm.dev; struct drm_i915_gem_object *obj; const struct firmware *fw = NULL; struct uc_css_header *css; size_t size; int err; GEM_BUG_ON(!i915->wopcm.size); GEM_BUG_ON(!intel_uc_fw_is_enabled(uc_fw)); err = i915_inject_probe_error(i915, -ENXIO); if (err) goto fail; __force_fw_fetch_failures(uc_fw, -EINVAL); __force_fw_fetch_failures(uc_fw, -ESTALE); err = request_firmware(&fw, uc_fw->path, dev); if (err) goto fail; /* Check the size of the blob before examining buffer contents */ if (unlikely(fw->size < sizeof(struct uc_css_header))) { drm_warn(&i915->drm, "%s firmware %s: invalid size: %zu < %zu\n", intel_uc_fw_type_repr(uc_fw->type), uc_fw->path, fw->size, sizeof(struct uc_css_header)); err = -ENODATA; goto fail; } css = (struct uc_css_header *)fw->data; /* Check integrity of size values inside CSS header */ size = (css->header_size_dw - css->key_size_dw - css->modulus_size_dw - css->exponent_size_dw) * sizeof(u32); if (unlikely(size != sizeof(struct uc_css_header))) { drm_warn(&i915->drm, "%s firmware %s: unexpected header size: %zu != %zu\n", intel_uc_fw_type_repr(uc_fw->type), uc_fw->path, fw->size, sizeof(struct uc_css_header)); err = -EPROTO; goto fail; } /* uCode size must calculated from other sizes */ uc_fw->ucode_size = (css->size_dw - css->header_size_dw) * sizeof(u32); /* now RSA */ if (unlikely(css->key_size_dw != UOS_RSA_SCRATCH_COUNT)) { drm_warn(&i915->drm, "%s firmware %s: unexpected key size: %u != %u\n", intel_uc_fw_type_repr(uc_fw->type), uc_fw->path, css->key_size_dw, UOS_RSA_SCRATCH_COUNT); err = -EPROTO; goto fail; } uc_fw->rsa_size = css->key_size_dw * sizeof(u32); /* At least, it should have header, uCode and RSA. Size of all three. */ size = sizeof(struct uc_css_header) + uc_fw->ucode_size + uc_fw->rsa_size; if (unlikely(fw->size < size)) { drm_warn(&i915->drm, "%s firmware %s: invalid size: %zu < %zu\n", intel_uc_fw_type_repr(uc_fw->type), uc_fw->path, fw->size, size); err = -ENOEXEC; goto fail; } /* Sanity check whether this fw is not larger than whole WOPCM memory */ size = __intel_uc_fw_get_upload_size(uc_fw); if (unlikely(size >= i915->wopcm.size)) { drm_warn(&i915->drm, "%s firmware %s: invalid size: %zu > %zu\n", intel_uc_fw_type_repr(uc_fw->type), uc_fw->path, size, (size_t)i915->wopcm.size); err = -E2BIG; goto fail; } /* Get version numbers from the CSS header */ uc_fw->major_ver_found = FIELD_GET(CSS_SW_VERSION_UC_MAJOR, css->sw_version); uc_fw->minor_ver_found = FIELD_GET(CSS_SW_VERSION_UC_MINOR, css->sw_version); if (uc_fw->major_ver_found != uc_fw->major_ver_wanted || uc_fw->minor_ver_found < uc_fw->minor_ver_wanted) { drm_notice(&i915->drm, "%s firmware %s: unexpected version: %u.%u != %u.%u\n", intel_uc_fw_type_repr(uc_fw->type), uc_fw->path, uc_fw->major_ver_found, uc_fw->minor_ver_found, uc_fw->major_ver_wanted, uc_fw->minor_ver_wanted); if (!intel_uc_fw_is_overridden(uc_fw)) { err = -ENOEXEC; goto fail; } } obj = i915_gem_object_create_shmem_from_data(i915, fw->data, fw->size); if (IS_ERR(obj)) { err = PTR_ERR(obj); goto fail; } uc_fw->obj = obj; uc_fw->size = fw->size; intel_uc_fw_change_status(uc_fw, INTEL_UC_FIRMWARE_AVAILABLE); release_firmware(fw); return 0; fail: intel_uc_fw_change_status(uc_fw, err == -ENOENT ? INTEL_UC_FIRMWARE_MISSING : INTEL_UC_FIRMWARE_ERROR); drm_notice(&i915->drm, "%s firmware %s: fetch failed with error %d\n", intel_uc_fw_type_repr(uc_fw->type), uc_fw->path, err); drm_info(&i915->drm, "%s firmware(s) can be downloaded from %s\n", intel_uc_fw_type_repr(uc_fw->type), INTEL_UC_FIRMWARE_URL); release_firmware(fw); /* OK even if fw is NULL */ return err; } static u32 uc_fw_ggtt_offset(struct intel_uc_fw *uc_fw) { struct i915_ggtt *ggtt = __uc_fw_to_gt(uc_fw)->ggtt; struct drm_mm_node *node = &ggtt->uc_fw; GEM_BUG_ON(!drm_mm_node_allocated(node)); GEM_BUG_ON(upper_32_bits(node->start)); GEM_BUG_ON(upper_32_bits(node->start + node->size - 1)); return lower_32_bits(node->start); } static void uc_fw_bind_ggtt(struct intel_uc_fw *uc_fw) { struct drm_i915_gem_object *obj = uc_fw->obj; struct i915_ggtt *ggtt = __uc_fw_to_gt(uc_fw)->ggtt; struct i915_vma dummy = { .node.start = uc_fw_ggtt_offset(uc_fw), .node.size = obj->base.size, .pages = obj->mm.pages, .vm = &ggtt->vm, }; GEM_BUG_ON(!i915_gem_object_has_pinned_pages(obj)); GEM_BUG_ON(dummy.node.size > ggtt->uc_fw.size); /* uc_fw->obj cache domains were not controlled across suspend */ drm_clflush_sg(dummy.pages); ggtt->vm.insert_entries(&ggtt->vm, &dummy, I915_CACHE_NONE, 0); } static void uc_fw_unbind_ggtt(struct intel_uc_fw *uc_fw) { struct drm_i915_gem_object *obj = uc_fw->obj; struct i915_ggtt *ggtt = __uc_fw_to_gt(uc_fw)->ggtt; u64 start = uc_fw_ggtt_offset(uc_fw); ggtt->vm.clear_range(&ggtt->vm, start, obj->base.size); } static int uc_fw_xfer(struct intel_uc_fw *uc_fw, u32 dst_offset, u32 dma_flags) { struct intel_gt *gt = __uc_fw_to_gt(uc_fw); struct intel_uncore *uncore = gt->uncore; u64 offset; int ret; ret = i915_inject_probe_error(gt->i915, -ETIMEDOUT); if (ret) return ret; intel_uncore_forcewake_get(uncore, FORCEWAKE_ALL); /* Set the source address for the uCode */ offset = uc_fw_ggtt_offset(uc_fw); GEM_BUG_ON(upper_32_bits(offset) & 0xFFFF0000); intel_uncore_write_fw(uncore, DMA_ADDR_0_LOW, lower_32_bits(offset)); intel_uncore_write_fw(uncore, DMA_ADDR_0_HIGH, upper_32_bits(offset)); /* Set the DMA destination */ intel_uncore_write_fw(uncore, DMA_ADDR_1_LOW, dst_offset); intel_uncore_write_fw(uncore, DMA_ADDR_1_HIGH, DMA_ADDRESS_SPACE_WOPCM); /* * Set the transfer size. The header plus uCode will be copied to WOPCM * via DMA, excluding any other components */ intel_uncore_write_fw(uncore, DMA_COPY_SIZE, sizeof(struct uc_css_header) + uc_fw->ucode_size); /* Start the DMA */ intel_uncore_write_fw(uncore, DMA_CTRL, _MASKED_BIT_ENABLE(dma_flags | START_DMA)); /* Wait for DMA to finish */ ret = intel_wait_for_register_fw(uncore, DMA_CTRL, START_DMA, 0, 100); if (ret) drm_err(>->i915->drm, "DMA for %s fw failed, DMA_CTRL=%u\n", intel_uc_fw_type_repr(uc_fw->type), intel_uncore_read_fw(uncore, DMA_CTRL)); /* Disable the bits once DMA is over */ intel_uncore_write_fw(uncore, DMA_CTRL, _MASKED_BIT_DISABLE(dma_flags)); intel_uncore_forcewake_put(uncore, FORCEWAKE_ALL); return ret; } /** * intel_uc_fw_upload - load uC firmware using custom loader * @uc_fw: uC firmware * @dst_offset: destination offset * @dma_flags: flags for flags for dma ctrl * * Loads uC firmware and updates internal flags. * * Return: 0 on success, non-zero on failure. */ int intel_uc_fw_upload(struct intel_uc_fw *uc_fw, u32 dst_offset, u32 dma_flags) { struct intel_gt *gt = __uc_fw_to_gt(uc_fw); int err; /* make sure the status was cleared the last time we reset the uc */ GEM_BUG_ON(intel_uc_fw_is_loaded(uc_fw)); err = i915_inject_probe_error(gt->i915, -ENOEXEC); if (err) return err; if (!intel_uc_fw_is_loadable(uc_fw)) return -ENOEXEC; /* Call custom loader */ uc_fw_bind_ggtt(uc_fw); err = uc_fw_xfer(uc_fw, dst_offset, dma_flags); uc_fw_unbind_ggtt(uc_fw); if (err) goto fail; intel_uc_fw_change_status(uc_fw, INTEL_UC_FIRMWARE_TRANSFERRED); return 0; fail: i915_probe_error(gt->i915, "Failed to load %s firmware %s (%d)\n", intel_uc_fw_type_repr(uc_fw->type), uc_fw->path, err); intel_uc_fw_change_status(uc_fw, INTEL_UC_FIRMWARE_FAIL); return err; } int intel_uc_fw_init(struct intel_uc_fw *uc_fw) { int err; /* this should happen before the load! */ GEM_BUG_ON(intel_uc_fw_is_loaded(uc_fw)); if (!intel_uc_fw_is_available(uc_fw)) return -ENOEXEC; err = i915_gem_object_pin_pages(uc_fw->obj); if (err) { DRM_DEBUG_DRIVER("%s fw pin-pages err=%d\n", intel_uc_fw_type_repr(uc_fw->type), err); intel_uc_fw_change_status(uc_fw, INTEL_UC_FIRMWARE_FAIL); } return err; } void intel_uc_fw_fini(struct intel_uc_fw *uc_fw) { if (i915_gem_object_has_pinned_pages(uc_fw->obj)) i915_gem_object_unpin_pages(uc_fw->obj); intel_uc_fw_change_status(uc_fw, INTEL_UC_FIRMWARE_AVAILABLE); } /** * intel_uc_fw_cleanup_fetch - cleanup uC firmware * @uc_fw: uC firmware * * Cleans up uC firmware by releasing the firmware GEM obj. */ void intel_uc_fw_cleanup_fetch(struct intel_uc_fw *uc_fw) { if (!intel_uc_fw_is_available(uc_fw)) return; i915_gem_object_put(fetch_and_zero(&uc_fw->obj)); intel_uc_fw_change_status(uc_fw, INTEL_UC_FIRMWARE_SELECTED); } /** * intel_uc_fw_copy_rsa - copy fw RSA to buffer * * @uc_fw: uC firmware * @dst: dst buffer * @max_len: max number of bytes to copy * * Return: number of copied bytes. */ size_t intel_uc_fw_copy_rsa(struct intel_uc_fw *uc_fw, void *dst, u32 max_len) { struct sg_table *pages = uc_fw->obj->mm.pages; u32 size = min_t(u32, uc_fw->rsa_size, max_len); u32 offset = sizeof(struct uc_css_header) + uc_fw->ucode_size; GEM_BUG_ON(!intel_uc_fw_is_available(uc_fw)); return sg_pcopy_to_buffer(pages->sgl, pages->nents, dst, size, offset); } /** * intel_uc_fw_dump - dump information about uC firmware * @uc_fw: uC firmware * @p: the &drm_printer * * Pretty printer for uC firmware. */ void intel_uc_fw_dump(const struct intel_uc_fw *uc_fw, struct drm_printer *p) { drm_printf(p, "%s firmware: %s\n", intel_uc_fw_type_repr(uc_fw->type), uc_fw->path); drm_printf(p, "\tstatus: %s\n", intel_uc_fw_status_repr(uc_fw->status)); drm_printf(p, "\tversion: wanted %u.%u, found %u.%u\n", uc_fw->major_ver_wanted, uc_fw->minor_ver_wanted, uc_fw->major_ver_found, uc_fw->minor_ver_found); drm_printf(p, "\tuCode: %u bytes\n", uc_fw->ucode_size); drm_printf(p, "\tRSA: %u bytes\n", uc_fw->rsa_size); } |