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

   1 /*
   2  * Copyright 2016 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/module.h>
  25
  26 #ifdef CONFIG_X86
  27 #include <asm/hypervisor.h>
  28 #endif
  29
  30 #include <drm/drm_drv.h>
  31 #include <xen/xen.h>
  32
  33 #include "amdgpu.h"
  34 #include "amdgpu_ras.h"
  35 #include "vi.h"
  36 #include "soc15.h"
  37 #include "nv.h"
  38
  39 #define POPULATE_UCODE_INFO(vf2pf_info, ucode, ver) \
  40         do { \
  41                 vf2pf_info->ucode_info[ucode].id = ucode; \
  42                 vf2pf_info->ucode_info[ucode].version = ver; \
  43         } while (0)
  44
  45 bool amdgpu_virt_mmio_blocked(struct amdgpu_device *adev)
  46 {
  47         /* By now all MMIO pages except mailbox are blocked */
  48         /* if blocking is enabled in hypervisor. Choose the */
  49         /* SCRATCH_REG0 to test. */
  50         return RREG32_NO_KIQ(0xc040) == 0xffffffff;
  51 }
  52
  53 void amdgpu_virt_init_setting(struct amdgpu_device *adev)
  54 {
  55         struct drm_device *ddev = adev_to_drm(adev);
  56
  57         /* enable virtual display */
  58         if (adev->asic_type != CHIP_ALDEBARAN &&
  59             adev->asic_type != CHIP_ARCTURUS) {
  60                 if (adev->mode_info.num_crtc == 0)
  61                         adev->mode_info.num_crtc = 1;
  62                 adev->enable_virtual_display = true;
  63         }
  64         ddev->driver_features &= ~DRIVER_ATOMIC;
  65         adev->cg_flags = 0;
  66         adev->pg_flags = 0;
  67 }
  68
  69 void amdgpu_virt_kiq_reg_write_reg_wait(struct amdgpu_device *adev,
  70                                         uint32_t reg0, uint32_t reg1,
  71                                         uint32_t ref, uint32_t mask)
  72 {
  73         struct amdgpu_kiq *kiq = &adev->gfx.kiq;
  74         struct amdgpu_ring *ring = &kiq->ring;
  75         signed long r, cnt = 0;
  76         unsigned long flags;
  77         uint32_t seq;
  78
  79         if (adev->mes.ring.sched.ready) {
  80                 amdgpu_mes_reg_write_reg_wait(adev, reg0, reg1,
  81                                               ref, mask);
  82                 return;
  83         }
  84
  85         spin_lock_irqsave(&kiq->ring_lock, flags);
  86         amdgpu_ring_alloc(ring, 32);
  87         amdgpu_ring_emit_reg_write_reg_wait(ring, reg0, reg1,
  88                                             ref, mask);
  89         r = amdgpu_fence_emit_polling(ring, &seq, MAX_KIQ_REG_WAIT);
  90         if (r)
  91                 goto failed_undo;
  92
  93         amdgpu_ring_commit(ring);
  94         spin_unlock_irqrestore(&kiq->ring_lock, flags);
  95
  96         r = amdgpu_fence_wait_polling(ring, seq, MAX_KIQ_REG_WAIT);
  97
  98         /* don't wait anymore for IRQ context */
  99         if (r < 1 && in_interrupt())
 100                 goto failed_kiq;
 101
 102         might_sleep();
 103         while (r < 1 && cnt++ < MAX_KIQ_REG_TRY) {
 104
 105                 msleep(MAX_KIQ_REG_BAILOUT_INTERVAL);
 106                 r = amdgpu_fence_wait_polling(ring, seq, MAX_KIQ_REG_WAIT);
 107         }
 108
 109         if (cnt > MAX_KIQ_REG_TRY)
 110                 goto failed_kiq;
 111
 112         return;
 113
 114 failed_undo:
 115         amdgpu_ring_undo(ring);
 116         spin_unlock_irqrestore(&kiq->ring_lock, flags);
 117 failed_kiq:
 118         dev_err(adev->dev, "failed to write reg %x wait reg %x\n", reg0, reg1);
 119 }
 120
 121 /**
 122  * amdgpu_virt_request_full_gpu() - request full gpu access
 123  * @adev:       amdgpu device.
 124  * @init:       is driver init time.
 125  * When start to init/fini driver, first need to request full gpu access.
 126  * Return: Zero if request success, otherwise will return error.
 127  */
 128 int amdgpu_virt_request_full_gpu(struct amdgpu_device *adev, bool init)
 129 {
 130         struct amdgpu_virt *virt = &adev->virt;
 131         int r;
 132
 133         if (virt->ops && virt->ops->req_full_gpu) {
 134                 r = virt->ops->req_full_gpu(adev, init);
 135                 if (r)
 136                         return r;
 137
 138                 adev->virt.caps &= ~AMDGPU_SRIOV_CAPS_RUNTIME;
 139         }
 140
 141         return 0;
 142 }
 143
 144 /**
 145  * amdgpu_virt_release_full_gpu() - release full gpu access
 146  * @adev:       amdgpu device.
 147  * @init:       is driver init time.
 148  * When finishing driver init/fini, need to release full gpu access.
 149  * Return: Zero if release success, otherwise will returen error.
 150  */
 151 int amdgpu_virt_release_full_gpu(struct amdgpu_device *adev, bool init)
 152 {
 153         struct amdgpu_virt *virt = &adev->virt;
 154         int r;
 155
 156         if (virt->ops && virt->ops->rel_full_gpu) {
 157                 r = virt->ops->rel_full_gpu(adev, init);
 158                 if (r)
 159                         return r;
 160
 161                 adev->virt.caps |= AMDGPU_SRIOV_CAPS_RUNTIME;
 162         }
 163         return 0;
 164 }
 165
 166 /**
 167  * amdgpu_virt_reset_gpu() - reset gpu
 168  * @adev:       amdgpu device.
 169  * Send reset command to GPU hypervisor to reset GPU that VM is using
 170  * Return: Zero if reset success, otherwise will return error.
 171  */
 172 int amdgpu_virt_reset_gpu(struct amdgpu_device *adev)
 173 {
 174         struct amdgpu_virt *virt = &adev->virt;
 175         int r;
 176
 177         if (virt->ops && virt->ops->reset_gpu) {
 178                 r = virt->ops->reset_gpu(adev);
 179                 if (r)
 180                         return r;
 181
 182                 adev->virt.caps &= ~AMDGPU_SRIOV_CAPS_RUNTIME;
 183         }
 184
 185         return 0;
 186 }
 187
 188 void amdgpu_virt_request_init_data(struct amdgpu_device *adev)
 189 {
 190         struct amdgpu_virt *virt = &adev->virt;
 191
 192         if (virt->ops && virt->ops->req_init_data)
 193                 virt->ops->req_init_data(adev);
 194
 195         if (adev->virt.req_init_data_ver > 0)
 196                 DRM_INFO("host supports REQ_INIT_DATA handshake\n");
 197         else
 198                 DRM_WARN("host doesn't support REQ_INIT_DATA handshake\n");
 199 }
 200
 201 /**
 202  * amdgpu_virt_wait_reset() - wait for reset gpu completed
 203  * @adev:       amdgpu device.
 204  * Wait for GPU reset completed.
 205  * Return: Zero if reset success, otherwise will return error.
 206  */
 207 int amdgpu_virt_wait_reset(struct amdgpu_device *adev)
 208 {
 209         struct amdgpu_virt *virt = &adev->virt;
 210
 211         if (!virt->ops || !virt->ops->wait_reset)
 212                 return -EINVAL;
 213
 214         return virt->ops->wait_reset(adev);
 215 }
 216
 217 /**
 218  * amdgpu_virt_alloc_mm_table() - alloc memory for mm table
 219  * @adev:       amdgpu device.
 220  * MM table is used by UVD and VCE for its initialization
 221  * Return: Zero if allocate success.
 222  */
 223 int amdgpu_virt_alloc_mm_table(struct amdgpu_device *adev)
 224 {
 225         int r;
 226
 227         if (!amdgpu_sriov_vf(adev) || adev->virt.mm_table.gpu_addr)
 228                 return 0;
 229
 230         r = amdgpu_bo_create_kernel(adev, PAGE_SIZE, PAGE_SIZE,
 231                                     AMDGPU_GEM_DOMAIN_VRAM,
 232                                     &adev->virt.mm_table.bo,
 233                                     &adev->virt.mm_table.gpu_addr,
 234                                     (void *)&adev->virt.mm_table.cpu_addr);
 235         if (r) {
 236                 DRM_ERROR("failed to alloc mm table and error = %d.\n", r);
 237                 return r;
 238         }
 239
 240         memset((void *)adev->virt.mm_table.cpu_addr, 0, PAGE_SIZE);
 241         DRM_INFO("MM table gpu addr = 0x%llx, cpu addr = %p.\n",
 242                  adev->virt.mm_table.gpu_addr,
 243                  adev->virt.mm_table.cpu_addr);
 244         return 0;
 245 }
 246
 247 /**
 248  * amdgpu_virt_free_mm_table() - free mm table memory
 249  * @adev:       amdgpu device.
 250  * Free MM table memory
 251  */
 252 void amdgpu_virt_free_mm_table(struct amdgpu_device *adev)
 253 {
 254         if (!amdgpu_sriov_vf(adev) || !adev->virt.mm_table.gpu_addr)
 255                 return;
 256
 257         amdgpu_bo_free_kernel(&adev->virt.mm_table.bo,
 258                               &adev->virt.mm_table.gpu_addr,
 259                               (void *)&adev->virt.mm_table.cpu_addr);
 260         adev->virt.mm_table.gpu_addr = 0;
 261 }
 262
 263
 264 unsigned int amd_sriov_msg_checksum(void *obj,
 265                                 unsigned long obj_size,
 266                                 unsigned int key,
 267                                 unsigned int checksum)
 268 {
 269         unsigned int ret = key;
 270         unsigned long i = 0;
 271         unsigned char *pos;
 272
 273         pos = (char *)obj;
 274         /* calculate checksum */
 275         for (i = 0; i < obj_size; ++i)
 276                 ret += *(pos + i);
 277         /* minus the checksum itself */
 278         pos = (char *)&checksum;
 279         for (i = 0; i < sizeof(checksum); ++i)
 280                 ret -= *(pos + i);
 281         return ret;
 282 }
 283
 284 static int amdgpu_virt_init_ras_err_handler_data(struct amdgpu_device *adev)
 285 {
 286         struct amdgpu_virt *virt = &adev->virt;
 287         struct amdgpu_virt_ras_err_handler_data **data = &virt->virt_eh_data;
 288         /* GPU will be marked bad on host if bp count more then 10,
 289          * so alloc 512 is enough.
 290          */
 291         unsigned int align_space = 512;
 292         void *bps = NULL;
 293         struct amdgpu_bo **bps_bo = NULL;
 294
 295         *data = kmalloc(sizeof(struct amdgpu_virt_ras_err_handler_data), GFP_KERNEL);
 296         if (!*data)
 297                 goto data_failure;
 298
 299         bps = kmalloc_array(align_space, sizeof((*data)->bps), GFP_KERNEL);
 300         if (!bps)
 301                 goto bps_failure;
 302
 303         bps_bo = kmalloc_array(align_space, sizeof((*data)->bps_bo), GFP_KERNEL);
 304         if (!bps_bo)
 305                 goto bps_bo_failure;
 306
 307         (*data)->bps = bps;
 308         (*data)->bps_bo = bps_bo;
 309         (*data)->count = 0;
 310         (*data)->last_reserved = 0;
 311
 312         virt->ras_init_done = true;
 313
 314         return 0;
 315
 316 bps_bo_failure:
 317         kfree(bps);
 318 bps_failure:
 319         kfree(*data);
 320 data_failure:
 321         return -ENOMEM;
 322 }
 323
 324 static void amdgpu_virt_ras_release_bp(struct amdgpu_device *adev)
 325 {
 326         struct amdgpu_virt *virt = &adev->virt;
 327         struct amdgpu_virt_ras_err_handler_data *data = virt->virt_eh_data;
 328         struct amdgpu_bo *bo;
 329         int i;
 330
 331         if (!data)
 332                 return;
 333
 334         for (i = data->last_reserved - 1; i >= 0; i--) {
 335                 bo = data->bps_bo[i];
 336                 amdgpu_bo_free_kernel(&bo, NULL, NULL);
 337                 data->bps_bo[i] = bo;
 338                 data->last_reserved = i;
 339         }
 340 }
 341
 342 void amdgpu_virt_release_ras_err_handler_data(struct amdgpu_device *adev)
 343 {
 344         struct amdgpu_virt *virt = &adev->virt;
 345         struct amdgpu_virt_ras_err_handler_data *data = virt->virt_eh_data;
 346
 347         virt->ras_init_done = false;
 348
 349         if (!data)
 350                 return;
 351
 352         amdgpu_virt_ras_release_bp(adev);
 353
 354         kfree(data->bps);
 355         kfree(data->bps_bo);
 356         kfree(data);
 357         virt->virt_eh_data = NULL;
 358 }
 359
 360 static void amdgpu_virt_ras_add_bps(struct amdgpu_device *adev,
 361                 struct eeprom_table_record *bps, int pages)
 362 {
 363         struct amdgpu_virt *virt = &adev->virt;
 364         struct amdgpu_virt_ras_err_handler_data *data = virt->virt_eh_data;
 365
 366         if (!data)
 367                 return;
 368
 369         memcpy(&data->bps[data->count], bps, pages * sizeof(*data->bps));
 370         data->count += pages;
 371 }
 372
 373 static void amdgpu_virt_ras_reserve_bps(struct amdgpu_device *adev)
 374 {
 375         struct amdgpu_virt *virt = &adev->virt;
 376         struct amdgpu_virt_ras_err_handler_data *data = virt->virt_eh_data;
 377         struct amdgpu_bo *bo = NULL;
 378         uint64_t bp;
 379         int i;
 380
 381         if (!data)
 382                 return;
 383
 384         for (i = data->last_reserved; i < data->count; i++) {
 385                 bp = data->bps[i].retired_page;
 386
 387                 /* There are two cases of reserve error should be ignored:
 388                  * 1) a ras bad page has been allocated (used by someone);
 389                  * 2) a ras bad page has been reserved (duplicate error injection
 390                  *    for one page);
 391                  */
 392                 if (amdgpu_bo_create_kernel_at(adev, bp << AMDGPU_GPU_PAGE_SHIFT,
 393                                                AMDGPU_GPU_PAGE_SIZE,
 394                                                AMDGPU_GEM_DOMAIN_VRAM,
 395                                                &bo, NULL))
 396                         DRM_DEBUG("RAS WARN: reserve vram for retired page %llx fail\n", bp);
 397
 398                 data->bps_bo[i] = bo;
 399                 data->last_reserved = i + 1;
 400                 bo = NULL;
 401         }
 402 }
 403
 404 static bool amdgpu_virt_ras_check_bad_page(struct amdgpu_device *adev,
 405                 uint64_t retired_page)
 406 {
 407         struct amdgpu_virt *virt = &adev->virt;
 408         struct amdgpu_virt_ras_err_handler_data *data = virt->virt_eh_data;
 409         int i;
 410
 411         if (!data)
 412                 return true;
 413
 414         for (i = 0; i < data->count; i++)
 415                 if (retired_page == data->bps[i].retired_page)
 416                         return true;
 417
 418         return false;
 419 }
 420
 421 static void amdgpu_virt_add_bad_page(struct amdgpu_device *adev,
 422                 uint64_t bp_block_offset, uint32_t bp_block_size)
 423 {
 424         struct eeprom_table_record bp;
 425         uint64_t retired_page;
 426         uint32_t bp_idx, bp_cnt;
 427
 428         if (bp_block_size) {
 429                 bp_cnt = bp_block_size / sizeof(uint64_t);
 430                 for (bp_idx = 0; bp_idx < bp_cnt; bp_idx++) {
 431                         retired_page = *(uint64_t *)(adev->mman.fw_vram_usage_va +
 432                                         bp_block_offset + bp_idx * sizeof(uint64_t));
 433                         bp.retired_page = retired_page;
 434
 435                         if (amdgpu_virt_ras_check_bad_page(adev, retired_page))
 436                                 continue;
 437
 438                         amdgpu_virt_ras_add_bps(adev, &bp, 1);
 439
 440                         amdgpu_virt_ras_reserve_bps(adev);
 441                 }
 442         }
 443 }
 444
 445 static int amdgpu_virt_read_pf2vf_data(struct amdgpu_device *adev)
 446 {
 447         struct amd_sriov_msg_pf2vf_info_header *pf2vf_info = adev->virt.fw_reserve.p_pf2vf;
 448         uint32_t checksum;
 449         uint32_t checkval;
 450
 451         uint32_t i;
 452         uint32_t tmp;
 453
 454         if (adev->virt.fw_reserve.p_pf2vf == NULL)
 455                 return -EINVAL;
 456
 457         if (pf2vf_info->size > 1024) {
 458                 DRM_ERROR("invalid pf2vf message size\n");
 459                 return -EINVAL;
 460         }
 461
 462         switch (pf2vf_info->version) {
 463         case 1:
 464                 checksum = ((struct amdgim_pf2vf_info_v1 *)pf2vf_info)->checksum;
 465                 checkval = amd_sriov_msg_checksum(
 466                         adev->virt.fw_reserve.p_pf2vf, pf2vf_info->size,
 467                         adev->virt.fw_reserve.checksum_key, checksum);
 468                 if (checksum != checkval) {
 469                         DRM_ERROR("invalid pf2vf message\n");
 470                         return -EINVAL;
 471                 }
 472
 473                 adev->virt.gim_feature =
 474                         ((struct amdgim_pf2vf_info_v1 *)pf2vf_info)->feature_flags;
 475                 break;
 476         case 2:
 477                 /* TODO: missing key, need to add it later */
 478                 checksum = ((struct amd_sriov_msg_pf2vf_info *)pf2vf_info)->checksum;
 479                 checkval = amd_sriov_msg_checksum(
 480                         adev->virt.fw_reserve.p_pf2vf, pf2vf_info->size,
 481                         0, checksum);
 482                 if (checksum != checkval) {
 483                         DRM_ERROR("invalid pf2vf message\n");
 484                         return -EINVAL;
 485                 }
 486
 487                 adev->virt.vf2pf_update_interval_ms =
 488                         ((struct amd_sriov_msg_pf2vf_info *)pf2vf_info)->vf2pf_update_interval_ms;
 489                 adev->virt.gim_feature =
 490                         ((struct amd_sriov_msg_pf2vf_info *)pf2vf_info)->feature_flags.all;
 491                 adev->virt.reg_access =
 492                         ((struct amd_sriov_msg_pf2vf_info *)pf2vf_info)->reg_access_flags.all;
 493
 494                 adev->virt.decode_max_dimension_pixels = 0;
 495                 adev->virt.decode_max_frame_pixels = 0;
 496                 adev->virt.encode_max_dimension_pixels = 0;
 497                 adev->virt.encode_max_frame_pixels = 0;
 498                 adev->virt.is_mm_bw_enabled = false;
 499                 for (i = 0; i < AMD_SRIOV_MSG_RESERVE_VCN_INST; i++) {
 500                         tmp = ((struct amd_sriov_msg_pf2vf_info *)pf2vf_info)->mm_bw_management[i].decode_max_dimension_pixels;
 501                         adev->virt.decode_max_dimension_pixels = max(tmp, adev->virt.decode_max_dimension_pixels);
 502
 503                         tmp = ((struct amd_sriov_msg_pf2vf_info *)pf2vf_info)->mm_bw_management[i].decode_max_frame_pixels;
 504                         adev->virt.decode_max_frame_pixels = max(tmp, adev->virt.decode_max_frame_pixels);
 505
 506                         tmp = ((struct amd_sriov_msg_pf2vf_info *)pf2vf_info)->mm_bw_management[i].encode_max_dimension_pixels;
 507                         adev->virt.encode_max_dimension_pixels = max(tmp, adev->virt.encode_max_dimension_pixels);
 508
 509                         tmp = ((struct amd_sriov_msg_pf2vf_info *)pf2vf_info)->mm_bw_management[i].encode_max_frame_pixels;
 510                         adev->virt.encode_max_frame_pixels = max(tmp, adev->virt.encode_max_frame_pixels);
 511                 }
 512                 if((adev->virt.decode_max_dimension_pixels > 0) || (adev->virt.encode_max_dimension_pixels > 0))
 513                         adev->virt.is_mm_bw_enabled = true;
 514
 515                 adev->unique_id =
 516                         ((struct amd_sriov_msg_pf2vf_info *)pf2vf_info)->uuid;
 517                 break;
 518         default:
 519                 DRM_ERROR("invalid pf2vf version\n");
 520                 return -EINVAL;
 521         }
 522
 523         /* correct too large or too little interval value */
 524         if (adev->virt.vf2pf_update_interval_ms < 200 || adev->virt.vf2pf_update_interval_ms > 10000)
 525                 adev->virt.vf2pf_update_interval_ms = 2000;
 526
 527         return 0;
 528 }
 529
 530 static void amdgpu_virt_populate_vf2pf_ucode_info(struct amdgpu_device *adev)
 531 {
 532         struct amd_sriov_msg_vf2pf_info *vf2pf_info;
 533         vf2pf_info = (struct amd_sriov_msg_vf2pf_info *) adev->virt.fw_reserve.p_vf2pf;
 534
 535         if (adev->virt.fw_reserve.p_vf2pf == NULL)
 536                 return;
 537
 538         POPULATE_UCODE_INFO(vf2pf_info, AMD_SRIOV_UCODE_ID_VCE,      adev->vce.fw_version);
 539         POPULATE_UCODE_INFO(vf2pf_info, AMD_SRIOV_UCODE_ID_UVD,      adev->uvd.fw_version);
 540         POPULATE_UCODE_INFO(vf2pf_info, AMD_SRIOV_UCODE_ID_MC,       adev->gmc.fw_version);
 541         POPULATE_UCODE_INFO(vf2pf_info, AMD_SRIOV_UCODE_ID_ME,       adev->gfx.me_fw_version);
 542         POPULATE_UCODE_INFO(vf2pf_info, AMD_SRIOV_UCODE_ID_PFP,      adev->gfx.pfp_fw_version);
 543         POPULATE_UCODE_INFO(vf2pf_info, AMD_SRIOV_UCODE_ID_CE,       adev->gfx.ce_fw_version);
 544         POPULATE_UCODE_INFO(vf2pf_info, AMD_SRIOV_UCODE_ID_RLC,      adev->gfx.rlc_fw_version);
 545         POPULATE_UCODE_INFO(vf2pf_info, AMD_SRIOV_UCODE_ID_RLC_SRLC, adev->gfx.rlc_srlc_fw_version);
 546         POPULATE_UCODE_INFO(vf2pf_info, AMD_SRIOV_UCODE_ID_RLC_SRLG, adev->gfx.rlc_srlg_fw_version);
 547         POPULATE_UCODE_INFO(vf2pf_info, AMD_SRIOV_UCODE_ID_RLC_SRLS, adev->gfx.rlc_srls_fw_version);
 548         POPULATE_UCODE_INFO(vf2pf_info, AMD_SRIOV_UCODE_ID_MEC,      adev->gfx.mec_fw_version);
 549         POPULATE_UCODE_INFO(vf2pf_info, AMD_SRIOV_UCODE_ID_MEC2,     adev->gfx.mec2_fw_version);
 550         POPULATE_UCODE_INFO(vf2pf_info, AMD_SRIOV_UCODE_ID_IMU,      adev->gfx.imu_fw_version);
 551         POPULATE_UCODE_INFO(vf2pf_info, AMD_SRIOV_UCODE_ID_SOS,      adev->psp.sos.fw_version);
 552         POPULATE_UCODE_INFO(vf2pf_info, AMD_SRIOV_UCODE_ID_ASD,
 553                             adev->psp.asd_context.bin_desc.fw_version);
 554         POPULATE_UCODE_INFO(vf2pf_info, AMD_SRIOV_UCODE_ID_TA_RAS,
 555                             adev->psp.ras_context.context.bin_desc.fw_version);
 556         POPULATE_UCODE_INFO(vf2pf_info, AMD_SRIOV_UCODE_ID_TA_XGMI,
 557                             adev->psp.xgmi_context.context.bin_desc.fw_version);
 558         POPULATE_UCODE_INFO(vf2pf_info, AMD_SRIOV_UCODE_ID_SMC,      adev->pm.fw_version);
 559         POPULATE_UCODE_INFO(vf2pf_info, AMD_SRIOV_UCODE_ID_SDMA,     adev->sdma.instance[0].fw_version);
 560         POPULATE_UCODE_INFO(vf2pf_info, AMD_SRIOV_UCODE_ID_SDMA2,    adev->sdma.instance[1].fw_version);
 561         POPULATE_UCODE_INFO(vf2pf_info, AMD_SRIOV_UCODE_ID_VCN,      adev->vcn.fw_version);
 562         POPULATE_UCODE_INFO(vf2pf_info, AMD_SRIOV_UCODE_ID_DMCU,     adev->dm.dmcu_fw_version);
 563 }
 564
 565 static int amdgpu_virt_write_vf2pf_data(struct amdgpu_device *adev)
 566 {
 567         struct amd_sriov_msg_vf2pf_info *vf2pf_info;
 568
 569         vf2pf_info = (struct amd_sriov_msg_vf2pf_info *) adev->virt.fw_reserve.p_vf2pf;
 570
 571         if (adev->virt.fw_reserve.p_vf2pf == NULL)
 572                 return -EINVAL;
 573
 574         memset(vf2pf_info, 0, sizeof(struct amd_sriov_msg_vf2pf_info));
 575
 576         vf2pf_info->header.size = sizeof(struct amd_sriov_msg_vf2pf_info);
 577         vf2pf_info->header.version = AMD_SRIOV_MSG_FW_VRAM_VF2PF_VER;
 578
 579 #ifdef MODULE
 580         if (THIS_MODULE->version != NULL)
 581                 strcpy(vf2pf_info->driver_version, THIS_MODULE->version);
 582         else
 583 #endif
 584                 strcpy(vf2pf_info->driver_version, "N/A");
 585
 586         vf2pf_info->pf2vf_version_required = 0; // no requirement, guest understands all
 587         vf2pf_info->driver_cert = 0;
 588         vf2pf_info->os_info.all = 0;
 589
 590         vf2pf_info->fb_usage =
 591                 ttm_resource_manager_usage(&adev->mman.vram_mgr.manager) >> 20;
 592         vf2pf_info->fb_vis_usage =
 593                 amdgpu_vram_mgr_vis_usage(&adev->mman.vram_mgr) >> 20;
 594         vf2pf_info->fb_size = adev->gmc.real_vram_size >> 20;
 595         vf2pf_info->fb_vis_size = adev->gmc.visible_vram_size >> 20;
 596
 597         amdgpu_virt_populate_vf2pf_ucode_info(adev);
 598
 599         /* TODO: read dynamic info */
 600         vf2pf_info->gfx_usage = 0;
 601         vf2pf_info->compute_usage = 0;
 602         vf2pf_info->encode_usage = 0;
 603         vf2pf_info->decode_usage = 0;
 604
 605         vf2pf_info->dummy_page_addr = (uint64_t)adev->dummy_page_addr;
 606         vf2pf_info->checksum =
 607                 amd_sriov_msg_checksum(
 608                 vf2pf_info, vf2pf_info->header.size, 0, 0);
 609
 610         return 0;
 611 }
 612
 613 static void amdgpu_virt_update_vf2pf_work_item(struct work_struct *work)
 614 {
 615         struct amdgpu_device *adev = container_of(work, struct amdgpu_device, virt.vf2pf_work.work);
 616         int ret;
 617
 618         ret = amdgpu_virt_read_pf2vf_data(adev);
 619         if (ret)
 620                 goto out;
 621         amdgpu_virt_write_vf2pf_data(adev);
 622
 623 out:
 624         schedule_delayed_work(&(adev->virt.vf2pf_work), adev->virt.vf2pf_update_interval_ms);
 625 }
 626
 627 void amdgpu_virt_fini_data_exchange(struct amdgpu_device *adev)
 628 {
 629         if (adev->virt.vf2pf_update_interval_ms != 0) {
 630                 DRM_INFO("clean up the vf2pf work item\n");
 631                 cancel_delayed_work_sync(&adev->virt.vf2pf_work);
 632                 adev->virt.vf2pf_update_interval_ms = 0;
 633         }
 634 }
 635
 636 void amdgpu_virt_init_data_exchange(struct amdgpu_device *adev)
 637 {
 638         adev->virt.fw_reserve.p_pf2vf = NULL;
 639         adev->virt.fw_reserve.p_vf2pf = NULL;
 640         adev->virt.vf2pf_update_interval_ms = 0;
 641
 642         if (adev->mman.fw_vram_usage_va != NULL) {
 643                 /* go through this logic in ip_init and reset to init workqueue*/
 644                 amdgpu_virt_exchange_data(adev);
 645
 646                 INIT_DELAYED_WORK(&adev->virt.vf2pf_work, amdgpu_virt_update_vf2pf_work_item);
 647                 schedule_delayed_work(&(adev->virt.vf2pf_work), msecs_to_jiffies(adev->virt.vf2pf_update_interval_ms));
 648         } else if (adev->bios != NULL) {
 649                 /* got through this logic in early init stage to get necessary flags, e.g. rlcg_acc related*/
 650                 adev->virt.fw_reserve.p_pf2vf =
 651                         (struct amd_sriov_msg_pf2vf_info_header *)
 652                         (adev->bios + (AMD_SRIOV_MSG_PF2VF_OFFSET_KB << 10));
 653
 654                 amdgpu_virt_read_pf2vf_data(adev);
 655         }
 656 }
 657
 658
 659 void amdgpu_virt_exchange_data(struct amdgpu_device *adev)
 660 {
 661         uint64_t bp_block_offset = 0;
 662         uint32_t bp_block_size = 0;
 663         struct amd_sriov_msg_pf2vf_info *pf2vf_v2 = NULL;
 664
 665         if (adev->mman.fw_vram_usage_va != NULL) {
 666
 667                 adev->virt.fw_reserve.p_pf2vf =
 668                         (struct amd_sriov_msg_pf2vf_info_header *)
 669                         (adev->mman.fw_vram_usage_va + (AMD_SRIOV_MSG_PF2VF_OFFSET_KB << 10));
 670                 adev->virt.fw_reserve.p_vf2pf =
 671                         (struct amd_sriov_msg_vf2pf_info_header *)
 672                         (adev->mman.fw_vram_usage_va + (AMD_SRIOV_MSG_VF2PF_OFFSET_KB << 10));
 673
 674                 amdgpu_virt_read_pf2vf_data(adev);
 675                 amdgpu_virt_write_vf2pf_data(adev);
 676
 677                 /* bad page handling for version 2 */
 678                 if (adev->virt.fw_reserve.p_pf2vf->version == 2) {
 679                                 pf2vf_v2 = (struct amd_sriov_msg_pf2vf_info *)adev->virt.fw_reserve.p_pf2vf;
 680
 681                                 bp_block_offset = ((uint64_t)pf2vf_v2->bp_block_offset_low & 0xFFFFFFFF) |
 682                                                 ((((uint64_t)pf2vf_v2->bp_block_offset_high) << 32) & 0xFFFFFFFF00000000);
 683                                 bp_block_size = pf2vf_v2->bp_block_size;
 684
 685                                 if (bp_block_size && !adev->virt.ras_init_done)
 686                                         amdgpu_virt_init_ras_err_handler_data(adev);
 687
 688                                 if (adev->virt.ras_init_done)
 689                                         amdgpu_virt_add_bad_page(adev, bp_block_offset, bp_block_size);
 690                         }
 691         }
 692 }
 693
 694 void amdgpu_detect_virtualization(struct amdgpu_device *adev)
 695 {
 696         uint32_t reg;
 697
 698         switch (adev->asic_type) {
 699         case CHIP_TONGA:
 700         case CHIP_FIJI:
 701                 reg = RREG32(mmBIF_IOV_FUNC_IDENTIFIER);
 702                 break;
 703         case CHIP_VEGA10:
 704         case CHIP_VEGA20:
 705         case CHIP_NAVI10:
 706         case CHIP_NAVI12:
 707         case CHIP_SIENNA_CICHLID:
 708         case CHIP_ARCTURUS:
 709         case CHIP_ALDEBARAN:
 710         case CHIP_IP_DISCOVERY:
 711                 reg = RREG32(mmRCC_IOV_FUNC_IDENTIFIER);
 712                 break;
 713         default: /* other chip doesn't support SRIOV */
 714                 reg = 0;
 715                 break;
 716         }
 717
 718         if (reg & 1)
 719                 adev->virt.caps |= AMDGPU_SRIOV_CAPS_IS_VF;
 720
 721         if (reg & 0x80000000)
 722                 adev->virt.caps |= AMDGPU_SRIOV_CAPS_ENABLE_IOV;
 723
 724         if (!reg) {
 725                 /* passthrough mode exclus sriov mod */
 726                 if (is_virtual_machine() && !xen_initial_domain())
 727                         adev->virt.caps |= AMDGPU_PASSTHROUGH_MODE;
 728         }
 729
 730         if (amdgpu_sriov_vf(adev) && adev->asic_type == CHIP_SIENNA_CICHLID)
 731                 /* VF MMIO access (except mailbox range) from CPU
 732                  * will be blocked during sriov runtime
 733                  */
 734                 adev->virt.caps |= AMDGPU_VF_MMIO_ACCESS_PROTECT;
 735
 736         /* we have the ability to check now */
 737         if (amdgpu_sriov_vf(adev)) {
 738                 switch (adev->asic_type) {
 739                 case CHIP_TONGA:
 740                 case CHIP_FIJI:
 741                         vi_set_virt_ops(adev);
 742                         break;
 743                 case CHIP_VEGA10:
 744                         soc15_set_virt_ops(adev);
 745 #ifdef CONFIG_X86
 746                         /* not send GPU_INIT_DATA with MS_HYPERV*/
 747                         if (!hypervisor_is_type(X86_HYPER_MS_HYPERV))
 748 #endif
 749                                 /* send a dummy GPU_INIT_DATA request to host on vega10 */
 750                                 amdgpu_virt_request_init_data(adev);
 751                         break;
 752                 case CHIP_VEGA20:
 753                 case CHIP_ARCTURUS:
 754                 case CHIP_ALDEBARAN:
 755                         soc15_set_virt_ops(adev);
 756                         break;
 757                 case CHIP_NAVI10:
 758                 case CHIP_NAVI12:
 759                 case CHIP_SIENNA_CICHLID:
 760                 case CHIP_IP_DISCOVERY:
 761                         nv_set_virt_ops(adev);
 762                         /* try send GPU_INIT_DATA request to host */
 763                         amdgpu_virt_request_init_data(adev);
 764                         break;
 765                 default: /* other chip doesn't support SRIOV */
 766                         DRM_ERROR("Unknown asic type: %d!\n", adev->asic_type);
 767                         break;
 768                 }
 769         }
 770 }
 771
 772 static bool amdgpu_virt_access_debugfs_is_mmio(struct amdgpu_device *adev)
 773 {
 774         return amdgpu_sriov_is_debug(adev) ? true : false;
 775 }
 776
 777 static bool amdgpu_virt_access_debugfs_is_kiq(struct amdgpu_device *adev)
 778 {
 779         return amdgpu_sriov_is_normal(adev) ? true : false;
 780 }
 781
 782 int amdgpu_virt_enable_access_debugfs(struct amdgpu_device *adev)
 783 {
 784         if (!amdgpu_sriov_vf(adev) ||
 785             amdgpu_virt_access_debugfs_is_kiq(adev))
 786                 return 0;
 787
 788         if (amdgpu_virt_access_debugfs_is_mmio(adev))
 789                 adev->virt.caps &= ~AMDGPU_SRIOV_CAPS_RUNTIME;
 790         else
 791                 return -EPERM;
 792
 793         return 0;
 794 }
 795
 796 void amdgpu_virt_disable_access_debugfs(struct amdgpu_device *adev)
 797 {
 798         if (amdgpu_sriov_vf(adev))
 799                 adev->virt.caps |= AMDGPU_SRIOV_CAPS_RUNTIME;
 800 }
 801
 802 enum amdgpu_sriov_vf_mode amdgpu_virt_get_sriov_vf_mode(struct amdgpu_device *adev)
 803 {
 804         enum amdgpu_sriov_vf_mode mode;
 805
 806         if (amdgpu_sriov_vf(adev)) {
 807                 if (amdgpu_sriov_is_pp_one_vf(adev))
 808                         mode = SRIOV_VF_MODE_ONE_VF;
 809                 else
 810                         mode = SRIOV_VF_MODE_MULTI_VF;
 811         } else {
 812                 mode = SRIOV_VF_MODE_BARE_METAL;
 813         }
 814
 815         return mode;
 816 }
 817
 818 bool amdgpu_virt_fw_load_skip_check(struct amdgpu_device *adev, uint32_t ucode_id)
 819 {
 820         switch (adev->ip_versions[MP0_HWIP][0]) {
 821         case IP_VERSION(13, 0, 0):
 822                 /* no vf autoload, white list */
 823                 if (ucode_id == AMDGPU_UCODE_ID_VCN1 ||
 824                     ucode_id == AMDGPU_UCODE_ID_VCN)
 825                         return false;
 826                 else
 827                         return true;
 828         case IP_VERSION(13, 0, 10):
 829                 /* white list */
 830                 if (ucode_id == AMDGPU_UCODE_ID_CAP
 831                 || ucode_id == AMDGPU_UCODE_ID_CP_RS64_PFP
 832                 || ucode_id == AMDGPU_UCODE_ID_CP_RS64_ME
 833                 || ucode_id == AMDGPU_UCODE_ID_CP_RS64_MEC
 834                 || ucode_id == AMDGPU_UCODE_ID_CP_RS64_PFP_P0_STACK
 835                 || ucode_id == AMDGPU_UCODE_ID_CP_RS64_PFP_P1_STACK
 836                 || ucode_id == AMDGPU_UCODE_ID_CP_RS64_ME_P0_STACK
 837                 || ucode_id == AMDGPU_UCODE_ID_CP_RS64_ME_P1_STACK
 838                 || ucode_id == AMDGPU_UCODE_ID_CP_RS64_MEC_P0_STACK
 839                 || ucode_id == AMDGPU_UCODE_ID_CP_RS64_MEC_P1_STACK
 840                 || ucode_id == AMDGPU_UCODE_ID_CP_RS64_MEC_P2_STACK
 841                 || ucode_id == AMDGPU_UCODE_ID_CP_RS64_MEC_P3_STACK
 842                 || ucode_id == AMDGPU_UCODE_ID_CP_MES
 843                 || ucode_id == AMDGPU_UCODE_ID_CP_MES_DATA
 844                 || ucode_id == AMDGPU_UCODE_ID_CP_MES1
 845                 || ucode_id == AMDGPU_UCODE_ID_CP_MES1_DATA
 846                 || ucode_id == AMDGPU_UCODE_ID_VCN1
 847                 || ucode_id == AMDGPU_UCODE_ID_VCN)
 848                         return false;
 849                 else
 850                         return true;
 851         default:
 852                 /* lagacy black list */
 853                 if (ucode_id == AMDGPU_UCODE_ID_SDMA0
 854                     || ucode_id == AMDGPU_UCODE_ID_SDMA1
 855                     || ucode_id == AMDGPU_UCODE_ID_SDMA2
 856                     || ucode_id == AMDGPU_UCODE_ID_SDMA3
 857                     || ucode_id == AMDGPU_UCODE_ID_SDMA4
 858                     || ucode_id == AMDGPU_UCODE_ID_SDMA5
 859                     || ucode_id == AMDGPU_UCODE_ID_SDMA6
 860                     || ucode_id == AMDGPU_UCODE_ID_SDMA7
 861                     || ucode_id == AMDGPU_UCODE_ID_RLC_G
 862                     || ucode_id == AMDGPU_UCODE_ID_RLC_RESTORE_LIST_CNTL
 863                     || ucode_id == AMDGPU_UCODE_ID_RLC_RESTORE_LIST_GPM_MEM
 864                     || ucode_id == AMDGPU_UCODE_ID_RLC_RESTORE_LIST_SRM_MEM
 865                     || ucode_id == AMDGPU_UCODE_ID_SMC)
 866                         return true;
 867                 else
 868                         return false;
 869         }
 870 }
 871
 872 void amdgpu_virt_update_sriov_video_codec(struct amdgpu_device *adev,
 873                         struct amdgpu_video_codec_info *encode, uint32_t encode_array_size,
 874                         struct amdgpu_video_codec_info *decode, uint32_t decode_array_size)
 875 {
 876         uint32_t i;
 877
 878         if (!adev->virt.is_mm_bw_enabled)
 879                 return;
 880
 881         if (encode) {
 882                 for (i = 0; i < encode_array_size; i++) {
 883                         encode[i].max_width = adev->virt.encode_max_dimension_pixels;
 884                         encode[i].max_pixels_per_frame = adev->virt.encode_max_frame_pixels;
 885                         if (encode[i].max_width > 0)
 886                                 encode[i].max_height = encode[i].max_pixels_per_frame / encode[i].max_width;
 887                         else
 888                                 encode[i].max_height = 0;
 889                 }
 890         }
 891
 892         if (decode) {
 893                 for (i = 0; i < decode_array_size; i++) {
 894                         decode[i].max_width = adev->virt.decode_max_dimension_pixels;
 895                         decode[i].max_pixels_per_frame = adev->virt.decode_max_frame_pixels;
 896                         if (decode[i].max_width > 0)
 897                                 decode[i].max_height = decode[i].max_pixels_per_frame / decode[i].max_width;
 898                         else
 899                                 decode[i].max_height = 0;
 900                 }
 901         }
 902 }
 903
 904 static bool amdgpu_virt_get_rlcg_reg_access_flag(struct amdgpu_device *adev,
 905                                                  u32 acc_flags, u32 hwip,
 906                                                  bool write, u32 *rlcg_flag)
 907 {
 908         bool ret = false;
 909
 910         switch (hwip) {
 911         case GC_HWIP:
 912                 if (amdgpu_sriov_reg_indirect_gc(adev)) {
 913                         *rlcg_flag =
 914                                 write ? AMDGPU_RLCG_GC_WRITE : AMDGPU_RLCG_GC_READ;
 915                         ret = true;
 916                 /* only in new version, AMDGPU_REGS_NO_KIQ and
 917                  * AMDGPU_REGS_RLC are enabled simultaneously */
 918                 } else if ((acc_flags & AMDGPU_REGS_RLC) &&
 919                                 !(acc_flags & AMDGPU_REGS_NO_KIQ) && write) {
 920                         *rlcg_flag = AMDGPU_RLCG_GC_WRITE_LEGACY;
 921                         ret = true;
 922                 }
 923                 break;
 924         case MMHUB_HWIP:
 925                 if (amdgpu_sriov_reg_indirect_mmhub(adev) &&
 926                     (acc_flags & AMDGPU_REGS_RLC) && write) {
 927                         *rlcg_flag = AMDGPU_RLCG_MMHUB_WRITE;
 928                         ret = true;
 929                 }
 930                 break;
 931         default:
 932                 break;
 933         }
 934         return ret;
 935 }
 936
 937 static u32 amdgpu_virt_rlcg_reg_rw(struct amdgpu_device *adev, u32 offset, u32 v, u32 flag)
 938 {
 939         struct amdgpu_rlcg_reg_access_ctrl *reg_access_ctrl;
 940         uint32_t timeout = 50000;
 941         uint32_t i, tmp;
 942         uint32_t ret = 0;
 943         void *scratch_reg0;
 944         void *scratch_reg1;
 945         void *scratch_reg2;
 946         void *scratch_reg3;
 947         void *spare_int;
 948
 949         if (!adev->gfx.rlc.rlcg_reg_access_supported) {
 950                 dev_err(adev->dev,
 951                         "indirect registers access through rlcg is not available\n");
 952                 return 0;
 953         }
 954
 955         reg_access_ctrl = &adev->gfx.rlc.reg_access_ctrl;
 956         scratch_reg0 = (void __iomem *)adev->rmmio + 4 * reg_access_ctrl->scratch_reg0;
 957         scratch_reg1 = (void __iomem *)adev->rmmio + 4 * reg_access_ctrl->scratch_reg1;
 958         scratch_reg2 = (void __iomem *)adev->rmmio + 4 * reg_access_ctrl->scratch_reg2;
 959         scratch_reg3 = (void __iomem *)adev->rmmio + 4 * reg_access_ctrl->scratch_reg3;
 960         if (reg_access_ctrl->spare_int)
 961                 spare_int = (void __iomem *)adev->rmmio + 4 * reg_access_ctrl->spare_int;
 962
 963         if (offset == reg_access_ctrl->grbm_cntl) {
 964                 /* if the target reg offset is grbm_cntl, write to scratch_reg2 */
 965                 writel(v, scratch_reg2);
 966                 writel(v, ((void __iomem *)adev->rmmio) + (offset * 4));
 967         } else if (offset == reg_access_ctrl->grbm_idx) {
 968                 /* if the target reg offset is grbm_idx, write to scratch_reg3 */
 969                 writel(v, scratch_reg3);
 970                 writel(v, ((void __iomem *)adev->rmmio) + (offset * 4));
 971         } else {
 972                 /*
 973                  * SCRATCH_REG0         = read/write value
 974                  * SCRATCH_REG1[30:28]  = command
 975                  * SCRATCH_REG1[19:0]   = address in dword
 976                  * SCRATCH_REG1[26:24]  = Error reporting
 977                  */
 978                 writel(v, scratch_reg0);
 979                 writel((offset | flag), scratch_reg1);
 980                 if (reg_access_ctrl->spare_int)
 981                         writel(1, spare_int);
 982
 983                 for (i = 0; i < timeout; i++) {
 984                         tmp = readl(scratch_reg1);
 985                         if (!(tmp & AMDGPU_RLCG_SCRATCH1_ADDRESS_MASK))
 986                                 break;
 987                         udelay(10);
 988                 }
 989
 990                 if (i >= timeout) {
 991                         if (amdgpu_sriov_rlcg_error_report_enabled(adev)) {
 992                                 if (tmp & AMDGPU_RLCG_VFGATE_DISABLED) {
 993                                         dev_err(adev->dev,
 994                                                 "vfgate is disabled, rlcg failed to program reg: 0x%05x\n", offset);
 995                                 } else if (tmp & AMDGPU_RLCG_WRONG_OPERATION_TYPE) {
 996                                         dev_err(adev->dev,
 997                                                 "wrong operation type, rlcg failed to program reg: 0x%05x\n", offset);
 998                                 } else if (tmp & AMDGPU_RLCG_REG_NOT_IN_RANGE) {
 999                                         dev_err(adev->dev,
1000                                                 "register is not in range, rlcg failed to program reg: 0x%05x\n", offset);
1001                                 } else {
1002                                         dev_err(adev->dev,
1003                                                 "unknown error type, rlcg failed to program reg: 0x%05x\n", offset);
1004                                 }
1005                         } else {
1006                                 dev_err(adev->dev,
1007                                         "timeout: rlcg faled to program reg: 0x%05x\n", offset);
1008                         }
1009                 }
1010         }
1011
1012         ret = readl(scratch_reg0);
1013         return ret;
1014 }
1015
1016 void amdgpu_sriov_wreg(struct amdgpu_device *adev,
1017                        u32 offset, u32 value,
1018                        u32 acc_flags, u32 hwip)
1019 {
1020         u32 rlcg_flag;
1021
1022         if (!amdgpu_sriov_runtime(adev) &&
1023                 amdgpu_virt_get_rlcg_reg_access_flag(adev, acc_flags, hwip, true, &rlcg_flag)) {
1024                 amdgpu_virt_rlcg_reg_rw(adev, offset, value, rlcg_flag);
1025                 return;
1026         }
1027
1028         if (acc_flags & AMDGPU_REGS_NO_KIQ)
1029                 WREG32_NO_KIQ(offset, value);
1030         else
1031                 WREG32(offset, value);
1032 }
1033
1034 u32 amdgpu_sriov_rreg(struct amdgpu_device *adev,
1035                       u32 offset, u32 acc_flags, u32 hwip)
1036 {
1037         u32 rlcg_flag;
1038
1039         if (!amdgpu_sriov_runtime(adev) &&
1040                 amdgpu_virt_get_rlcg_reg_access_flag(adev, acc_flags, hwip, false, &rlcg_flag))
1041                 return amdgpu_virt_rlcg_reg_rw(adev, offset, 0, rlcg_flag);
1042
1043         if (acc_flags & AMDGPU_REGS_NO_KIQ)
1044                 return RREG32_NO_KIQ(offset);
1045         else
1046                 return RREG32(offset);
1047 }