drivers/gpu/drm/amd/amdgpu/amdgpu_ucode.c

   1 /*
   2  * Copyright 2014 Advanced Micro Devices, Inc.
   3  *
   4  * Permission is hereby granted, free of charge, to any person obtaining a
   5  * copy of this software and associated documentation files (the "Software"),
   6  * to deal in the Software without restriction, including without limitation
   7  * the rights to use, copy, modify, merge, publish, distribute, sublicense,
   8  * and/or sell copies of the Software, and to permit persons to whom the
   9  * Software is furnished to do so, subject to the following conditions:
  10  *
  11  * The above copyright notice and this permission notice shall be included in
  12  * all copies or substantial portions of the Software.
  13  *
  14  * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
  15  * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
  16  * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.  IN NO EVENT SHALL
  17  * THE COPYRIGHT HOLDER(S) OR AUTHOR(S) BE LIABLE FOR ANY CLAIM, DAMAGES OR
  18  * OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE,
  19  * ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
  20  * OTHER DEALINGS IN THE SOFTWARE.
  21  *
  22  */
  23
  24 #include <linux/firmware.h>
  25 #include <linux/slab.h>
  26 #include <linux/module.h>
  27 #include <drm/drmP.h>
  28 #include "amdgpu.h"
  29 #include "amdgpu_ucode.h"
  30
  31 static void amdgpu_ucode_print_common_hdr(const struct common_firmware_header *hdr)
  32 {
  33         DRM_DEBUG("size_bytes: %u\n", le32_to_cpu(hdr->size_bytes));
  34         DRM_DEBUG("header_size_bytes: %u\n", le32_to_cpu(hdr->header_size_bytes));
  35         DRM_DEBUG("header_version_major: %u\n", le16_to_cpu(hdr->header_version_major));
  36         DRM_DEBUG("header_version_minor: %u\n", le16_to_cpu(hdr->header_version_minor));
  37         DRM_DEBUG("ip_version_major: %u\n", le16_to_cpu(hdr->ip_version_major));
  38         DRM_DEBUG("ip_version_minor: %u\n", le16_to_cpu(hdr->ip_version_minor));
  39         DRM_DEBUG("ucode_version: 0x%08x\n", le32_to_cpu(hdr->ucode_version));
  40         DRM_DEBUG("ucode_size_bytes: %u\n", le32_to_cpu(hdr->ucode_size_bytes));
  41         DRM_DEBUG("ucode_array_offset_bytes: %u\n",
  42                   le32_to_cpu(hdr->ucode_array_offset_bytes));
  43         DRM_DEBUG("crc32: 0x%08x\n", le32_to_cpu(hdr->crc32));
  44 }
  45
  46 void amdgpu_ucode_print_mc_hdr(const struct common_firmware_header *hdr)
  47 {
  48         uint16_t version_major = le16_to_cpu(hdr->header_version_major);
  49         uint16_t version_minor = le16_to_cpu(hdr->header_version_minor);
  50
  51         DRM_DEBUG("MC\n");
  52         amdgpu_ucode_print_common_hdr(hdr);
  53
  54         if (version_major == 1) {
  55                 const struct mc_firmware_header_v1_0 *mc_hdr =
  56                         container_of(hdr, struct mc_firmware_header_v1_0, header);
  57
  58                 DRM_DEBUG("io_debug_size_bytes: %u\n",
  59                           le32_to_cpu(mc_hdr->io_debug_size_bytes));
  60                 DRM_DEBUG("io_debug_array_offset_bytes: %u\n",
  61                           le32_to_cpu(mc_hdr->io_debug_array_offset_bytes));
  62         } else {
  63                 DRM_ERROR("Unknown MC ucode version: %u.%u\n", version_major, version_minor);
  64         }
  65 }
  66
  67 void amdgpu_ucode_print_smc_hdr(const struct common_firmware_header *hdr)
  68 {
  69         uint16_t version_major = le16_to_cpu(hdr->header_version_major);
  70         uint16_t version_minor = le16_to_cpu(hdr->header_version_minor);
  71
  72         DRM_DEBUG("SMC\n");
  73         amdgpu_ucode_print_common_hdr(hdr);
  74
  75         if (version_major == 1) {
  76                 const struct smc_firmware_header_v1_0 *smc_hdr =
  77                         container_of(hdr, struct smc_firmware_header_v1_0, header);
  78
  79                 DRM_DEBUG("ucode_start_addr: %u\n", le32_to_cpu(smc_hdr->ucode_start_addr));
  80         } else {
  81                 DRM_ERROR("Unknown SMC ucode version: %u.%u\n", version_major, version_minor);
  82         }
  83 }
  84
  85 void amdgpu_ucode_print_gfx_hdr(const struct common_firmware_header *hdr)
  86 {
  87         uint16_t version_major = le16_to_cpu(hdr->header_version_major);
  88         uint16_t version_minor = le16_to_cpu(hdr->header_version_minor);
  89
  90         DRM_DEBUG("GFX\n");
  91         amdgpu_ucode_print_common_hdr(hdr);
  92
  93         if (version_major == 1) {
  94                 const struct gfx_firmware_header_v1_0 *gfx_hdr =
  95                         container_of(hdr, struct gfx_firmware_header_v1_0, header);
  96
  97                 DRM_DEBUG("ucode_feature_version: %u\n",
  98                           le32_to_cpu(gfx_hdr->ucode_feature_version));
  99                 DRM_DEBUG("jt_offset: %u\n", le32_to_cpu(gfx_hdr->jt_offset));
 100                 DRM_DEBUG("jt_size: %u\n", le32_to_cpu(gfx_hdr->jt_size));
 101         } else {
 102                 DRM_ERROR("Unknown GFX ucode version: %u.%u\n", version_major, version_minor);
 103         }
 104 }
 105
 106 void amdgpu_ucode_print_rlc_hdr(const struct common_firmware_header *hdr)
 107 {
 108         uint16_t version_major = le16_to_cpu(hdr->header_version_major);
 109         uint16_t version_minor = le16_to_cpu(hdr->header_version_minor);
 110
 111         DRM_DEBUG("RLC\n");
 112         amdgpu_ucode_print_common_hdr(hdr);
 113
 114         if (version_major == 1) {
 115                 const struct rlc_firmware_header_v1_0 *rlc_hdr =
 116                         container_of(hdr, struct rlc_firmware_header_v1_0, header);
 117
 118                 DRM_DEBUG("ucode_feature_version: %u\n",
 119                           le32_to_cpu(rlc_hdr->ucode_feature_version));
 120                 DRM_DEBUG("save_and_restore_offset: %u\n",
 121                           le32_to_cpu(rlc_hdr->save_and_restore_offset));
 122                 DRM_DEBUG("clear_state_descriptor_offset: %u\n",
 123                           le32_to_cpu(rlc_hdr->clear_state_descriptor_offset));
 124                 DRM_DEBUG("avail_scratch_ram_locations: %u\n",
 125                           le32_to_cpu(rlc_hdr->avail_scratch_ram_locations));
 126                 DRM_DEBUG("master_pkt_description_offset: %u\n",
 127                           le32_to_cpu(rlc_hdr->master_pkt_description_offset));
 128         } else if (version_major == 2) {
 129                 const struct rlc_firmware_header_v2_0 *rlc_hdr =
 130                         container_of(hdr, struct rlc_firmware_header_v2_0, header);
 131
 132                 DRM_DEBUG("ucode_feature_version: %u\n",
 133                           le32_to_cpu(rlc_hdr->ucode_feature_version));
 134                 DRM_DEBUG("jt_offset: %u\n", le32_to_cpu(rlc_hdr->jt_offset));
 135                 DRM_DEBUG("jt_size: %u\n", le32_to_cpu(rlc_hdr->jt_size));
 136                 DRM_DEBUG("save_and_restore_offset: %u\n",
 137                           le32_to_cpu(rlc_hdr->save_and_restore_offset));
 138                 DRM_DEBUG("clear_state_descriptor_offset: %u\n",
 139                           le32_to_cpu(rlc_hdr->clear_state_descriptor_offset));
 140                 DRM_DEBUG("avail_scratch_ram_locations: %u\n",
 141                           le32_to_cpu(rlc_hdr->avail_scratch_ram_locations));
 142                 DRM_DEBUG("reg_restore_list_size: %u\n",
 143                           le32_to_cpu(rlc_hdr->reg_restore_list_size));
 144                 DRM_DEBUG("reg_list_format_start: %u\n",
 145                           le32_to_cpu(rlc_hdr->reg_list_format_start));
 146                 DRM_DEBUG("reg_list_format_separate_start: %u\n",
 147                           le32_to_cpu(rlc_hdr->reg_list_format_separate_start));
 148                 DRM_DEBUG("starting_offsets_start: %u\n",
 149                           le32_to_cpu(rlc_hdr->starting_offsets_start));
 150                 DRM_DEBUG("reg_list_format_size_bytes: %u\n",
 151                           le32_to_cpu(rlc_hdr->reg_list_format_size_bytes));
 152                 DRM_DEBUG("reg_list_format_array_offset_bytes: %u\n",
 153                           le32_to_cpu(rlc_hdr->reg_list_format_array_offset_bytes));
 154                 DRM_DEBUG("reg_list_size_bytes: %u\n",
 155                           le32_to_cpu(rlc_hdr->reg_list_size_bytes));
 156                 DRM_DEBUG("reg_list_array_offset_bytes: %u\n",
 157                           le32_to_cpu(rlc_hdr->reg_list_array_offset_bytes));
 158                 DRM_DEBUG("reg_list_format_separate_size_bytes: %u\n",
 159                           le32_to_cpu(rlc_hdr->reg_list_format_separate_size_bytes));
 160                 DRM_DEBUG("reg_list_format_separate_array_offset_bytes: %u\n",
 161                           le32_to_cpu(rlc_hdr->reg_list_format_separate_array_offset_bytes));
 162                 DRM_DEBUG("reg_list_separate_size_bytes: %u\n",
 163                           le32_to_cpu(rlc_hdr->reg_list_separate_size_bytes));
 164                 DRM_DEBUG("reg_list_separate_size_bytes: %u\n",
 165                           le32_to_cpu(rlc_hdr->reg_list_separate_size_bytes));
 166         } else {
 167                 DRM_ERROR("Unknown RLC ucode version: %u.%u\n", version_major, version_minor);
 168         }
 169 }
 170
 171 void amdgpu_ucode_print_sdma_hdr(const struct common_firmware_header *hdr)
 172 {
 173         uint16_t version_major = le16_to_cpu(hdr->header_version_major);
 174         uint16_t version_minor = le16_to_cpu(hdr->header_version_minor);
 175
 176         DRM_DEBUG("SDMA\n");
 177         amdgpu_ucode_print_common_hdr(hdr);
 178
 179         if (version_major == 1) {
 180                 const struct sdma_firmware_header_v1_0 *sdma_hdr =
 181                         container_of(hdr, struct sdma_firmware_header_v1_0, header);
 182
 183                 DRM_DEBUG("ucode_feature_version: %u\n",
 184                           le32_to_cpu(sdma_hdr->ucode_feature_version));
 185                 DRM_DEBUG("ucode_change_version: %u\n",
 186                           le32_to_cpu(sdma_hdr->ucode_change_version));
 187                 DRM_DEBUG("jt_offset: %u\n", le32_to_cpu(sdma_hdr->jt_offset));
 188                 DRM_DEBUG("jt_size: %u\n", le32_to_cpu(sdma_hdr->jt_size));
 189                 if (version_minor >= 1) {
 190                         const struct sdma_firmware_header_v1_1 *sdma_v1_1_hdr =
 191                                 container_of(sdma_hdr, struct sdma_firmware_header_v1_1, v1_0);
 192                         DRM_DEBUG("digest_size: %u\n", le32_to_cpu(sdma_v1_1_hdr->digest_size));
 193                 }
 194         } else {
 195                 DRM_ERROR("Unknown SDMA ucode version: %u.%u\n",
 196                           version_major, version_minor);
 197         }
 198 }
 199
 200 void amdgpu_ucode_print_gpu_info_hdr(const struct common_firmware_header *hdr)
 201 {
 202         uint16_t version_major = le16_to_cpu(hdr->header_version_major);
 203         uint16_t version_minor = le16_to_cpu(hdr->header_version_minor);
 204
 205         DRM_DEBUG("GPU_INFO\n");
 206         amdgpu_ucode_print_common_hdr(hdr);
 207
 208         if (version_major == 1) {
 209                 const struct gpu_info_firmware_header_v1_0 *gpu_info_hdr =
 210                         container_of(hdr, struct gpu_info_firmware_header_v1_0, header);
 211
 212                 DRM_DEBUG("version_major: %u\n",
 213                           le16_to_cpu(gpu_info_hdr->version_major));
 214                 DRM_DEBUG("version_minor: %u\n",
 215                           le16_to_cpu(gpu_info_hdr->version_minor));
 216         } else {
 217                 DRM_ERROR("Unknown gpu_info ucode version: %u.%u\n", version_major, version_minor);
 218         }
 219 }
 220
 221 int amdgpu_ucode_validate(const struct firmware *fw)
 222 {
 223         const struct common_firmware_header *hdr =
 224                 (const struct common_firmware_header *)fw->data;
 225
 226         if (fw->size == le32_to_cpu(hdr->size_bytes))
 227                 return 0;
 228
 229         return -EINVAL;
 230 }
 231
 232 bool amdgpu_ucode_hdr_version(union amdgpu_firmware_header *hdr,
 233                                 uint16_t hdr_major, uint16_t hdr_minor)
 234 {
 235         if ((hdr->common.header_version_major == hdr_major) &&
 236                 (hdr->common.header_version_minor == hdr_minor))
 237                 return false;
 238         return true;
 239 }
 240
 241 enum amdgpu_firmware_load_type
 242 amdgpu_ucode_get_load_type(struct amdgpu_device *adev, int load_type)
 243 {
 244         switch (adev->asic_type) {
 245 #ifdef CONFIG_DRM_AMDGPU_SI
 246         case CHIP_TAHITI:
 247         case CHIP_PITCAIRN:
 248         case CHIP_VERDE:
 249         case CHIP_OLAND:
 250         case CHIP_HAINAN:
 251                 return AMDGPU_FW_LOAD_DIRECT;
 252 #endif
 253 #ifdef CONFIG_DRM_AMDGPU_CIK
 254         case CHIP_BONAIRE:
 255         case CHIP_KAVERI:
 256         case CHIP_KABINI:
 257         case CHIP_HAWAII:
 258         case CHIP_MULLINS:
 259                 return AMDGPU_FW_LOAD_DIRECT;
 260 #endif
 261         case CHIP_TOPAZ:
 262         case CHIP_TONGA:
 263         case CHIP_FIJI:
 264         case CHIP_CARRIZO:
 265         case CHIP_STONEY:
 266         case CHIP_POLARIS10:
 267         case CHIP_POLARIS11:
 268         case CHIP_POLARIS12:
 269                 if (!load_type)
 270                         return AMDGPU_FW_LOAD_DIRECT;
 271                 else
 272                         return AMDGPU_FW_LOAD_SMU;
 273         case CHIP_VEGA10:
 274                 if (!load_type)
 275                         return AMDGPU_FW_LOAD_DIRECT;
 276                 else
 277                         return AMDGPU_FW_LOAD_PSP;
 278         case CHIP_RAVEN:
 279                 if (load_type != 2)
 280                         return AMDGPU_FW_LOAD_DIRECT;
 281                 else
 282                         return AMDGPU_FW_LOAD_PSP;
 283         default:
 284                 DRM_ERROR("Unknow firmware load type\n");
 285         }
 286
 287         return AMDGPU_FW_LOAD_DIRECT;
 288 }
 289
 290 static int amdgpu_ucode_init_single_fw(struct amdgpu_device *adev,
 291                                        struct amdgpu_firmware_info *ucode,
 292                                        uint64_t mc_addr, void *kptr)
 293 {
 294         const struct common_firmware_header *header = NULL;
 295         const struct gfx_firmware_header_v1_0 *cp_hdr = NULL;
 296
 297         if (NULL == ucode->fw)
 298                 return 0;
 299
 300         ucode->mc_addr = mc_addr;
 301         ucode->kaddr = kptr;
 302
 303         if (ucode->ucode_id == AMDGPU_UCODE_ID_STORAGE)
 304                 return 0;
 305
 306         header = (const struct common_firmware_header *)ucode->fw->data;
 307
 308         cp_hdr = (const struct gfx_firmware_header_v1_0 *)ucode->fw->data;
 309
 310         if (adev->firmware.load_type != AMDGPU_FW_LOAD_PSP ||
 311             (ucode->ucode_id != AMDGPU_UCODE_ID_CP_MEC1 &&
 312              ucode->ucode_id != AMDGPU_UCODE_ID_CP_MEC2 &&
 313              ucode->ucode_id != AMDGPU_UCODE_ID_CP_MEC1_JT &&
 314              ucode->ucode_id != AMDGPU_UCODE_ID_CP_MEC2_JT)) {
 315                 ucode->ucode_size = le32_to_cpu(header->ucode_size_bytes);
 316
 317                 memcpy(ucode->kaddr, (void *)((uint8_t *)ucode->fw->data +
 318                                               le32_to_cpu(header->ucode_array_offset_bytes)),
 319                        ucode->ucode_size);
 320         } else if (ucode->ucode_id == AMDGPU_UCODE_ID_CP_MEC1 ||
 321                    ucode->ucode_id == AMDGPU_UCODE_ID_CP_MEC2) {
 322                 ucode->ucode_size = le32_to_cpu(header->ucode_size_bytes) -
 323                         le32_to_cpu(cp_hdr->jt_size) * 4;
 324
 325                 memcpy(ucode->kaddr, (void *)((uint8_t *)ucode->fw->data +
 326                                               le32_to_cpu(header->ucode_array_offset_bytes)),
 327                        ucode->ucode_size);
 328         } else if (ucode->ucode_id == AMDGPU_UCODE_ID_CP_MEC1_JT ||
 329                    ucode->ucode_id == AMDGPU_UCODE_ID_CP_MEC2_JT) {
 330                 ucode->ucode_size = le32_to_cpu(cp_hdr->jt_size) * 4;
 331
 332                 memcpy(ucode->kaddr, (void *)((uint8_t *)ucode->fw->data +
 333                                               le32_to_cpu(header->ucode_array_offset_bytes) +
 334                                               le32_to_cpu(cp_hdr->jt_offset) * 4),
 335                        ucode->ucode_size);
 336         }
 337
 338         return 0;
 339 }
 340
 341 static int amdgpu_ucode_patch_jt(struct amdgpu_firmware_info *ucode,
 342                                 uint64_t mc_addr, void *kptr)
 343 {
 344         const struct gfx_firmware_header_v1_0 *header = NULL;
 345         const struct common_firmware_header *comm_hdr = NULL;
 346         uint8_t* src_addr = NULL;
 347         uint8_t* dst_addr = NULL;
 348
 349         if (NULL == ucode->fw)
 350                 return 0;
 351
 352         comm_hdr = (const struct common_firmware_header *)ucode->fw->data;
 353         header = (const struct gfx_firmware_header_v1_0 *)ucode->fw->data;
 354         dst_addr = ucode->kaddr +
 355                            ALIGN(le32_to_cpu(comm_hdr->ucode_size_bytes),
 356                            PAGE_SIZE);
 357         src_addr = (uint8_t *)ucode->fw->data +
 358                            le32_to_cpu(comm_hdr->ucode_array_offset_bytes) +
 359                            (le32_to_cpu(header->jt_offset) * 4);
 360         memcpy(dst_addr, src_addr, le32_to_cpu(header->jt_size) * 4);
 361
 362         return 0;
 363 }
 364
 365 int amdgpu_ucode_init_bo(struct amdgpu_device *adev)
 366 {
 367         struct amdgpu_bo **bo = &adev->firmware.fw_buf;
 368         uint64_t fw_mc_addr;
 369         void *fw_buf_ptr = NULL;
 370         uint64_t fw_offset = 0;
 371         int i, err;
 372         struct amdgpu_firmware_info *ucode = NULL;
 373         const struct common_firmware_header *header = NULL;
 374
 375         if (!adev->firmware.fw_size) {
 376                 dev_warn(adev->dev, "No ip firmware need to load\n");
 377                 return 0;
 378         }
 379
 380         err = amdgpu_bo_create(adev, adev->firmware.fw_size, PAGE_SIZE, true,
 381                                 amdgpu_sriov_vf(adev) ? AMDGPU_GEM_DOMAIN_VRAM : AMDGPU_GEM_DOMAIN_GTT,
 382                                 AMDGPU_GEM_CREATE_VRAM_CONTIGUOUS,
 383                                 NULL, NULL, 0, bo);
 384         if (err) {
 385                 dev_err(adev->dev, "(%d) Firmware buffer allocate failed\n", err);
 386                 goto failed;
 387         }
 388
 389         err = amdgpu_bo_reserve(*bo, false);
 390         if (err) {
 391                 dev_err(adev->dev, "(%d) Firmware buffer reserve failed\n", err);
 392                 goto failed_reserve;
 393         }
 394
 395         err = amdgpu_bo_pin(*bo, amdgpu_sriov_vf(adev) ? AMDGPU_GEM_DOMAIN_VRAM : AMDGPU_GEM_DOMAIN_GTT,
 396                                 &fw_mc_addr);
 397         if (err) {
 398                 dev_err(adev->dev, "(%d) Firmware buffer pin failed\n", err);
 399                 goto failed_pin;
 400         }
 401
 402         err = amdgpu_bo_kmap(*bo, &fw_buf_ptr);
 403         if (err) {
 404                 dev_err(adev->dev, "(%d) Firmware buffer kmap failed\n", err);
 405                 goto failed_kmap;
 406         }
 407
 408         amdgpu_bo_unreserve(*bo);
 409
 410         memset(fw_buf_ptr, 0, adev->firmware.fw_size);
 411
 412         /*
 413          * if SMU loaded firmware, it needn't add SMC, UVD, and VCE
 414          * ucode info here
 415          */
 416         if (adev->firmware.load_type != AMDGPU_FW_LOAD_PSP) {
 417                 if (amdgpu_sriov_vf(adev))
 418                         adev->firmware.max_ucodes = AMDGPU_UCODE_ID_MAXIMUM - 3;
 419                 else
 420                         adev->firmware.max_ucodes = AMDGPU_UCODE_ID_MAXIMUM - 4;
 421         } else {
 422                 adev->firmware.max_ucodes = AMDGPU_UCODE_ID_MAXIMUM;
 423         }
 424
 425         for (i = 0; i < adev->firmware.max_ucodes; i++) {
 426                 ucode = &adev->firmware.ucode[i];
 427                 if (ucode->fw) {
 428                         header = (const struct common_firmware_header *)ucode->fw->data;
 429                         amdgpu_ucode_init_single_fw(adev, ucode, fw_mc_addr + fw_offset,
 430                                                     (void *)((uint8_t *)fw_buf_ptr + fw_offset));
 431                         if (i == AMDGPU_UCODE_ID_CP_MEC1 &&
 432                             adev->firmware.load_type != AMDGPU_FW_LOAD_PSP) {
 433                                 const struct gfx_firmware_header_v1_0 *cp_hdr;
 434                                 cp_hdr = (const struct gfx_firmware_header_v1_0 *)ucode->fw->data;
 435                                 amdgpu_ucode_patch_jt(ucode, fw_mc_addr + fw_offset,
 436                                                     fw_buf_ptr + fw_offset);
 437                                 fw_offset += ALIGN(le32_to_cpu(cp_hdr->jt_size) << 2, PAGE_SIZE);
 438                         }
 439                         fw_offset += ALIGN(ucode->ucode_size, PAGE_SIZE);
 440                 }
 441         }
 442         return 0;
 443
 444 failed_kmap:
 445         amdgpu_bo_unpin(*bo);
 446 failed_pin:
 447         amdgpu_bo_unreserve(*bo);
 448 failed_reserve:
 449         amdgpu_bo_unref(bo);
 450 failed:
 451         if (err)
 452                 adev->firmware.load_type = AMDGPU_FW_LOAD_DIRECT;
 453
 454         return err;
 455 }
 456
 457 int amdgpu_ucode_fini_bo(struct amdgpu_device *adev)
 458 {
 459         int i;
 460         struct amdgpu_firmware_info *ucode = NULL;
 461
 462         if (!adev->firmware.fw_size)
 463                 return 0;
 464
 465         for (i = 0; i < adev->firmware.max_ucodes; i++) {
 466                 ucode = &adev->firmware.ucode[i];
 467                 if (ucode->fw) {
 468                         ucode->mc_addr = 0;
 469                         ucode->kaddr = NULL;
 470                 }
 471         }
 472         amdgpu_bo_unref(&adev->firmware.fw_buf);
 473         adev->firmware.fw_buf = NULL;
 474
 475         return 0;
 476 }