kernel/drivers/gpu/drm/amd/amdgpu/amdgpu_uvd.c

   1 /*
   2  * Copyright 2011 Advanced Micro Devices, Inc.
   3  * All Rights Reserved.
   4  *
   5  * Permission is hereby granted, free of charge, to any person obtaining a
   6  * copy of this software and associated documentation files (the
   7  * "Software"), to deal in the Software without restriction, including
   8  * without limitation the rights to use, copy, modify, merge, publish,
   9  * distribute, sub license, and/or sell copies of the Software, and to
  10  * permit persons to whom the Software is furnished to do so, subject to
  11  * the following conditions:
  12  *
  13  * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
  14  * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
  15  * FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT. IN NO EVENT SHALL
  16  * THE COPYRIGHT HOLDERS, AUTHORS AND/OR ITS SUPPLIERS BE LIABLE FOR ANY CLAIM,
  17  * DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR
  18  * OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE
  19  * USE OR OTHER DEALINGS IN THE SOFTWARE.
  20  *
  21  * The above copyright notice and this permission notice (including the
  22  * next paragraph) shall be included in all copies or substantial portions
  23  * of the Software.
  24  *
  25  */
  26 /*
  27  * Authors:
  28  *    Christian König <deathsimple@vodafone.de>
  29  */
  30
  31 #include <linux/firmware.h>
  32 #include <linux/module.h>
  33 #include <drm/drmP.h>
  34 #include <drm/drm.h>
  35
  36 #include "amdgpu.h"
  37 #include "amdgpu_pm.h"
  38 #include "amdgpu_uvd.h"
  39 #include "cikd.h"
  40 #include "uvd/uvd_4_2_d.h"
  41
  42 /* 1 second timeout */
  43 #define UVD_IDLE_TIMEOUT_MS     1000
  44
  45 /* Firmware Names */
  46 #ifdef CONFIG_DRM_AMDGPU_CIK
  47 #define FIRMWARE_BONAIRE        "radeon/bonaire_uvd.bin"
  48 #define FIRMWARE_KABINI         "radeon/kabini_uvd.bin"
  49 #define FIRMWARE_KAVERI         "radeon/kaveri_uvd.bin"
  50 #define FIRMWARE_HAWAII         "radeon/hawaii_uvd.bin"
  51 #define FIRMWARE_MULLINS        "radeon/mullins_uvd.bin"
  52 #endif
  53 #define FIRMWARE_TONGA          "amdgpu/tonga_uvd.bin"
  54 #define FIRMWARE_CARRIZO        "amdgpu/carrizo_uvd.bin"
  55 #define FIRMWARE_FIJI           "amdgpu/fiji_uvd.bin"
  56 #define FIRMWARE_STONEY         "amdgpu/stoney_uvd.bin"
  57
  58 /**
  59  * amdgpu_uvd_cs_ctx - Command submission parser context
  60  *
  61  * Used for emulating virtual memory support on UVD 4.2.
  62  */
  63 struct amdgpu_uvd_cs_ctx {
  64         struct amdgpu_cs_parser *parser;
  65         unsigned reg, count;
  66         unsigned data0, data1;
  67         unsigned idx;
  68         unsigned ib_idx;
  69
  70         /* does the IB has a msg command */
  71         bool has_msg_cmd;
  72
  73         /* minimum buffer sizes */
  74         unsigned *buf_sizes;
  75 };
  76
  77 #ifdef CONFIG_DRM_AMDGPU_CIK
  78 MODULE_FIRMWARE(FIRMWARE_BONAIRE);
  79 MODULE_FIRMWARE(FIRMWARE_KABINI);
  80 MODULE_FIRMWARE(FIRMWARE_KAVERI);
  81 MODULE_FIRMWARE(FIRMWARE_HAWAII);
  82 MODULE_FIRMWARE(FIRMWARE_MULLINS);
  83 #endif
  84 MODULE_FIRMWARE(FIRMWARE_TONGA);
  85 MODULE_FIRMWARE(FIRMWARE_CARRIZO);
  86 MODULE_FIRMWARE(FIRMWARE_FIJI);
  87 MODULE_FIRMWARE(FIRMWARE_STONEY);
  88
  89 static void amdgpu_uvd_note_usage(struct amdgpu_device *adev);
  90 static void amdgpu_uvd_idle_work_handler(struct work_struct *work);
  91
  92 int amdgpu_uvd_sw_init(struct amdgpu_device *adev)
  93 {
  94         unsigned long bo_size;
  95         const char *fw_name;
  96         const struct common_firmware_header *hdr;
  97         unsigned version_major, version_minor, family_id;
  98         int i, r;
  99
 100         INIT_DELAYED_WORK(&adev->uvd.idle_work, amdgpu_uvd_idle_work_handler);
 101
 102         switch (adev->asic_type) {
 103 #ifdef CONFIG_DRM_AMDGPU_CIK
 104         case CHIP_BONAIRE:
 105                 fw_name = FIRMWARE_BONAIRE;
 106                 break;
 107         case CHIP_KABINI:
 108                 fw_name = FIRMWARE_KABINI;
 109                 break;
 110         case CHIP_KAVERI:
 111                 fw_name = FIRMWARE_KAVERI;
 112                 break;
 113         case CHIP_HAWAII:
 114                 fw_name = FIRMWARE_HAWAII;
 115                 break;
 116         case CHIP_MULLINS:
 117                 fw_name = FIRMWARE_MULLINS;
 118                 break;
 119 #endif
 120         case CHIP_TONGA:
 121                 fw_name = FIRMWARE_TONGA;
 122                 break;
 123         case CHIP_FIJI:
 124                 fw_name = FIRMWARE_FIJI;
 125                 break;
 126         case CHIP_CARRIZO:
 127                 fw_name = FIRMWARE_CARRIZO;
 128                 break;
 129         case CHIP_STONEY:
 130                 fw_name = FIRMWARE_STONEY;
 131                 break;
 132         default:
 133                 return -EINVAL;
 134         }
 135
 136         r = request_firmware(&adev->uvd.fw, fw_name, adev->dev);
 137         if (r) {
 138                 dev_err(adev->dev, "amdgpu_uvd: Can't load firmware \"%s\"\n",
 139                         fw_name);
 140                 return r;
 141         }
 142
 143         r = amdgpu_ucode_validate(adev->uvd.fw);
 144         if (r) {
 145                 dev_err(adev->dev, "amdgpu_uvd: Can't validate firmware \"%s\"\n",
 146                         fw_name);
 147                 release_firmware(adev->uvd.fw);
 148                 adev->uvd.fw = NULL;
 149                 return r;
 150         }
 151
 152         hdr = (const struct common_firmware_header *)adev->uvd.fw->data;
 153         family_id = le32_to_cpu(hdr->ucode_version) & 0xff;
 154         version_major = (le32_to_cpu(hdr->ucode_version) >> 24) & 0xff;
 155         version_minor = (le32_to_cpu(hdr->ucode_version) >> 8) & 0xff;
 156         DRM_INFO("Found UVD firmware Version: %hu.%hu Family ID: %hu\n",
 157                 version_major, version_minor, family_id);
 158
 159         bo_size = AMDGPU_GPU_PAGE_ALIGN(le32_to_cpu(hdr->ucode_size_bytes) + 8)
 160                  +  AMDGPU_UVD_STACK_SIZE + AMDGPU_UVD_HEAP_SIZE;
 161         r = amdgpu_bo_create(adev, bo_size, PAGE_SIZE, true,
 162                              AMDGPU_GEM_DOMAIN_VRAM,
 163                              AMDGPU_GEM_CREATE_CPU_ACCESS_REQUIRED,
 164                              NULL, NULL, &adev->uvd.vcpu_bo);
 165         if (r) {
 166                 dev_err(adev->dev, "(%d) failed to allocate UVD bo\n", r);
 167                 return r;
 168         }
 169
 170         r = amdgpu_bo_reserve(adev->uvd.vcpu_bo, false);
 171         if (r) {
 172                 amdgpu_bo_unref(&adev->uvd.vcpu_bo);
 173                 dev_err(adev->dev, "(%d) failed to reserve UVD bo\n", r);
 174                 return r;
 175         }
 176
 177         r = amdgpu_bo_pin(adev->uvd.vcpu_bo, AMDGPU_GEM_DOMAIN_VRAM,
 178                           &adev->uvd.gpu_addr);
 179         if (r) {
 180                 amdgpu_bo_unreserve(adev->uvd.vcpu_bo);
 181                 amdgpu_bo_unref(&adev->uvd.vcpu_bo);
 182                 dev_err(adev->dev, "(%d) UVD bo pin failed\n", r);
 183                 return r;
 184         }
 185
 186         r = amdgpu_bo_kmap(adev->uvd.vcpu_bo, &adev->uvd.cpu_addr);
 187         if (r) {
 188                 dev_err(adev->dev, "(%d) UVD map failed\n", r);
 189                 return r;
 190         }
 191
 192         amdgpu_bo_unreserve(adev->uvd.vcpu_bo);
 193
 194         for (i = 0; i < AMDGPU_MAX_UVD_HANDLES; ++i) {
 195                 atomic_set(&adev->uvd.handles[i], 0);
 196                 adev->uvd.filp[i] = NULL;
 197         }
 198
 199         /* from uvd v5.0 HW addressing capacity increased to 64 bits */
 200         if (!amdgpu_ip_block_version_cmp(adev, AMD_IP_BLOCK_TYPE_UVD, 5, 0))
 201                 adev->uvd.address_64_bit = true;
 202
 203         return 0;
 204 }
 205
 206 int amdgpu_uvd_sw_fini(struct amdgpu_device *adev)
 207 {
 208         int r;
 209
 210         if (adev->uvd.vcpu_bo == NULL)
 211                 return 0;
 212
 213         r = amdgpu_bo_reserve(adev->uvd.vcpu_bo, false);
 214         if (!r) {
 215                 amdgpu_bo_kunmap(adev->uvd.vcpu_bo);
 216                 amdgpu_bo_unpin(adev->uvd.vcpu_bo);
 217                 amdgpu_bo_unreserve(adev->uvd.vcpu_bo);
 218         }
 219
 220         amdgpu_bo_unref(&adev->uvd.vcpu_bo);
 221
 222         amdgpu_ring_fini(&adev->uvd.ring);
 223
 224         release_firmware(adev->uvd.fw);
 225
 226         return 0;
 227 }
 228
 229 int amdgpu_uvd_suspend(struct amdgpu_device *adev)
 230 {
 231         struct amdgpu_ring *ring = &adev->uvd.ring;
 232         int i, r;
 233
 234         if (adev->uvd.vcpu_bo == NULL)
 235                 return 0;
 236
 237         for (i = 0; i < AMDGPU_MAX_UVD_HANDLES; ++i) {
 238                 uint32_t handle = atomic_read(&adev->uvd.handles[i]);
 239                 if (handle != 0) {
 240                         struct fence *fence;
 241
 242                         amdgpu_uvd_note_usage(adev);
 243
 244                         r = amdgpu_uvd_get_destroy_msg(ring, handle, &fence);
 245                         if (r) {
 246                                 DRM_ERROR("Error destroying UVD (%d)!\n", r);
 247                                 continue;
 248                         }
 249
 250                         fence_wait(fence, false);
 251                         fence_put(fence);
 252
 253                         adev->uvd.filp[i] = NULL;
 254                         atomic_set(&adev->uvd.handles[i], 0);
 255                 }
 256         }
 257
 258         return 0;
 259 }
 260
 261 int amdgpu_uvd_resume(struct amdgpu_device *adev)
 262 {
 263         unsigned size;
 264         void *ptr;
 265         const struct common_firmware_header *hdr;
 266         unsigned offset;
 267
 268         if (adev->uvd.vcpu_bo == NULL)
 269                 return -EINVAL;
 270
 271         hdr = (const struct common_firmware_header *)adev->uvd.fw->data;
 272         offset = le32_to_cpu(hdr->ucode_array_offset_bytes);
 273         memcpy(adev->uvd.cpu_addr, (adev->uvd.fw->data) + offset,
 274                 (adev->uvd.fw->size) - offset);
 275
 276         size = amdgpu_bo_size(adev->uvd.vcpu_bo);
 277         size -= le32_to_cpu(hdr->ucode_size_bytes);
 278         ptr = adev->uvd.cpu_addr;
 279         ptr += le32_to_cpu(hdr->ucode_size_bytes);
 280
 281         memset(ptr, 0, size);
 282
 283         return 0;
 284 }
 285
 286 void amdgpu_uvd_free_handles(struct amdgpu_device *adev, struct drm_file *filp)
 287 {
 288         struct amdgpu_ring *ring = &adev->uvd.ring;
 289         int i, r;
 290
 291         for (i = 0; i < AMDGPU_MAX_UVD_HANDLES; ++i) {
 292                 uint32_t handle = atomic_read(&adev->uvd.handles[i]);
 293                 if (handle != 0 && adev->uvd.filp[i] == filp) {
 294                         struct fence *fence;
 295
 296                         amdgpu_uvd_note_usage(adev);
 297
 298                         r = amdgpu_uvd_get_destroy_msg(ring, handle, &fence);
 299                         if (r) {
 300                                 DRM_ERROR("Error destroying UVD (%d)!\n", r);
 301                                 continue;
 302                         }
 303
 304                         fence_wait(fence, false);
 305                         fence_put(fence);
 306
 307                         adev->uvd.filp[i] = NULL;
 308                         atomic_set(&adev->uvd.handles[i], 0);
 309                 }
 310         }
 311 }
 312
 313 static void amdgpu_uvd_force_into_uvd_segment(struct amdgpu_bo *rbo)
 314 {
 315         int i;
 316         for (i = 0; i < rbo->placement.num_placement; ++i) {
 317                 rbo->placements[i].fpfn = 0 >> PAGE_SHIFT;
 318                 rbo->placements[i].lpfn = (256 * 1024 * 1024) >> PAGE_SHIFT;
 319         }
 320 }
 321
 322 /**
 323  * amdgpu_uvd_cs_pass1 - first parsing round
 324  *
 325  * @ctx: UVD parser context
 326  *
 327  * Make sure UVD message and feedback buffers are in VRAM and
 328  * nobody is violating an 256MB boundary.
 329  */
 330 static int amdgpu_uvd_cs_pass1(struct amdgpu_uvd_cs_ctx *ctx)
 331 {
 332         struct amdgpu_bo_va_mapping *mapping;
 333         struct amdgpu_bo *bo;
 334         uint32_t cmd, lo, hi;
 335         uint64_t addr;
 336         int r = 0;
 337
 338         lo = amdgpu_get_ib_value(ctx->parser, ctx->ib_idx, ctx->data0);
 339         hi = amdgpu_get_ib_value(ctx->parser, ctx->ib_idx, ctx->data1);
 340         addr = ((uint64_t)lo) | (((uint64_t)hi) << 32);
 341
 342         mapping = amdgpu_cs_find_mapping(ctx->parser, addr, &bo);
 343         if (mapping == NULL) {
 344                 DRM_ERROR("Can't find BO for addr 0x%08Lx\n", addr);
 345                 return -EINVAL;
 346         }
 347
 348         if (!ctx->parser->adev->uvd.address_64_bit) {
 349                 /* check if it's a message or feedback command */
 350                 cmd = amdgpu_get_ib_value(ctx->parser, ctx->ib_idx, ctx->idx) >> 1;
 351                 if (cmd == 0x0 || cmd == 0x3) {
 352                         /* yes, force it into VRAM */
 353                         uint32_t domain = AMDGPU_GEM_DOMAIN_VRAM;
 354                         amdgpu_ttm_placement_from_domain(bo, domain);
 355                 }
 356                 amdgpu_uvd_force_into_uvd_segment(bo);
 357
 358                 r = ttm_bo_validate(&bo->tbo, &bo->placement, false, false);
 359         }
 360
 361         return r;
 362 }
 363
 364 /**
 365  * amdgpu_uvd_cs_msg_decode - handle UVD decode message
 366  *
 367  * @msg: pointer to message structure
 368  * @buf_sizes: returned buffer sizes
 369  *
 370  * Peek into the decode message and calculate the necessary buffer sizes.
 371  */
 372 static int amdgpu_uvd_cs_msg_decode(uint32_t *msg, unsigned buf_sizes[])
 373 {
 374         unsigned stream_type = msg[4];
 375         unsigned width = msg[6];
 376         unsigned height = msg[7];
 377         unsigned dpb_size = msg[9];
 378         unsigned pitch = msg[28];
 379         unsigned level = msg[57];
 380
 381         unsigned width_in_mb = width / 16;
 382         unsigned height_in_mb = ALIGN(height / 16, 2);
 383         unsigned fs_in_mb = width_in_mb * height_in_mb;
 384
 385         unsigned image_size, tmp, min_dpb_size, num_dpb_buffer;
 386         unsigned min_ctx_size = 0;
 387
 388         image_size = width * height;
 389         image_size += image_size / 2;
 390         image_size = ALIGN(image_size, 1024);
 391
 392         switch (stream_type) {
 393         case 0: /* H264 */
 394         case 7: /* H264 Perf */
 395                 switch(level) {
 396                 case 30:
 397                         num_dpb_buffer = 8100 / fs_in_mb;
 398                         break;
 399                 case 31:
 400                         num_dpb_buffer = 18000 / fs_in_mb;
 401                         break;
 402                 case 32:
 403                         num_dpb_buffer = 20480 / fs_in_mb;
 404                         break;
 405                 case 41:
 406                         num_dpb_buffer = 32768 / fs_in_mb;
 407                         break;
 408                 case 42:
 409                         num_dpb_buffer = 34816 / fs_in_mb;
 410                         break;
 411                 case 50:
 412                         num_dpb_buffer = 110400 / fs_in_mb;
 413                         break;
 414                 case 51:
 415                         num_dpb_buffer = 184320 / fs_in_mb;
 416                         break;
 417                 default:
 418                         num_dpb_buffer = 184320 / fs_in_mb;
 419                         break;
 420                 }
 421                 num_dpb_buffer++;
 422                 if (num_dpb_buffer > 17)
 423                         num_dpb_buffer = 17;
 424
 425                 /* reference picture buffer */
 426                 min_dpb_size = image_size * num_dpb_buffer;
 427
 428                 /* macroblock context buffer */
 429                 min_dpb_size += width_in_mb * height_in_mb * num_dpb_buffer * 192;
 430
 431                 /* IT surface buffer */
 432                 min_dpb_size += width_in_mb * height_in_mb * 32;
 433                 break;
 434
 435         case 1: /* VC1 */
 436
 437                 /* reference picture buffer */
 438                 min_dpb_size = image_size * 3;
 439
 440                 /* CONTEXT_BUFFER */
 441                 min_dpb_size += width_in_mb * height_in_mb * 128;
 442
 443                 /* IT surface buffer */
 444                 min_dpb_size += width_in_mb * 64;
 445
 446                 /* DB surface buffer */
 447                 min_dpb_size += width_in_mb * 128;
 448
 449                 /* BP */
 450                 tmp = max(width_in_mb, height_in_mb);
 451                 min_dpb_size += ALIGN(tmp * 7 * 16, 64);
 452                 break;
 453
 454         case 3: /* MPEG2 */
 455
 456                 /* reference picture buffer */
 457                 min_dpb_size = image_size * 3;
 458                 break;
 459
 460         case 4: /* MPEG4 */
 461
 462                 /* reference picture buffer */
 463                 min_dpb_size = image_size * 3;
 464
 465                 /* CM */
 466                 min_dpb_size += width_in_mb * height_in_mb * 64;
 467
 468                 /* IT surface buffer */
 469                 min_dpb_size += ALIGN(width_in_mb * height_in_mb * 32, 64);
 470                 break;
 471
 472         case 16: /* H265 */
 473                 image_size = (ALIGN(width, 16) * ALIGN(height, 16) * 3) / 2;
 474                 image_size = ALIGN(image_size, 256);
 475
 476                 num_dpb_buffer = (le32_to_cpu(msg[59]) & 0xff) + 2;
 477                 min_dpb_size = image_size * num_dpb_buffer;
 478                 min_ctx_size = ((width + 255) / 16) * ((height + 255) / 16)
 479                                            * 16 * num_dpb_buffer + 52 * 1024;
 480                 break;
 481
 482         default:
 483                 DRM_ERROR("UVD codec not handled %d!\n", stream_type);
 484                 return -EINVAL;
 485         }
 486
 487         if (width > pitch) {
 488                 DRM_ERROR("Invalid UVD decoding target pitch!\n");
 489                 return -EINVAL;
 490         }
 491
 492         if (dpb_size < min_dpb_size) {
 493                 DRM_ERROR("Invalid dpb_size in UVD message (%d / %d)!\n",
 494                           dpb_size, min_dpb_size);
 495                 return -EINVAL;
 496         }
 497
 498         buf_sizes[0x1] = dpb_size;
 499         buf_sizes[0x2] = image_size;
 500         buf_sizes[0x4] = min_ctx_size;
 501         return 0;
 502 }
 503
 504 /**
 505  * amdgpu_uvd_cs_msg - handle UVD message
 506  *
 507  * @ctx: UVD parser context
 508  * @bo: buffer object containing the message
 509  * @offset: offset into the buffer object
 510  *
 511  * Peek into the UVD message and extract the session id.
 512  * Make sure that we don't open up to many sessions.
 513  */
 514 static int amdgpu_uvd_cs_msg(struct amdgpu_uvd_cs_ctx *ctx,
 515                              struct amdgpu_bo *bo, unsigned offset)
 516 {
 517         struct amdgpu_device *adev = ctx->parser->adev;
 518         int32_t *msg, msg_type, handle;
 519         void *ptr;
 520         long r;
 521         int i;
 522
 523         if (offset & 0x3F) {
 524                 DRM_ERROR("UVD messages must be 64 byte aligned!\n");
 525                 return -EINVAL;
 526         }
 527
 528         r = reservation_object_wait_timeout_rcu(bo->tbo.resv, true, false,
 529                                                 MAX_SCHEDULE_TIMEOUT);
 530         if (r < 0) {
 531                 DRM_ERROR("Failed waiting for UVD message (%ld)!\n", r);
 532                 return r;
 533         }
 534
 535         r = amdgpu_bo_kmap(bo, &ptr);
 536         if (r) {
 537                 DRM_ERROR("Failed mapping the UVD message (%ld)!\n", r);
 538                 return r;
 539         }
 540
 541         msg = ptr + offset;
 542
 543         msg_type = msg[1];
 544         handle = msg[2];
 545
 546         if (handle == 0) {
 547                 DRM_ERROR("Invalid UVD handle!\n");
 548                 return -EINVAL;
 549         }
 550
 551         switch (msg_type) {
 552         case 0:
 553                 /* it's a create msg, calc image size (width * height) */
 554                 amdgpu_bo_kunmap(bo);
 555
 556                 /* try to alloc a new handle */
 557                 for (i = 0; i < AMDGPU_MAX_UVD_HANDLES; ++i) {
 558                         if (atomic_read(&adev->uvd.handles[i]) == handle) {
 559                                 DRM_ERROR("Handle 0x%x already in use!\n", handle);
 560                                 return -EINVAL;
 561                         }
 562
 563                         if (!atomic_cmpxchg(&adev->uvd.handles[i], 0, handle)) {
 564                                 adev->uvd.filp[i] = ctx->parser->filp;
 565                                 return 0;
 566                         }
 567                 }
 568
 569                 DRM_ERROR("No more free UVD handles!\n");
 570                 return -EINVAL;
 571
 572         case 1:
 573                 /* it's a decode msg, calc buffer sizes */
 574                 r = amdgpu_uvd_cs_msg_decode(msg, ctx->buf_sizes);
 575                 amdgpu_bo_kunmap(bo);
 576                 if (r)
 577                         return r;
 578
 579                 /* validate the handle */
 580                 for (i = 0; i < AMDGPU_MAX_UVD_HANDLES; ++i) {
 581                         if (atomic_read(&adev->uvd.handles[i]) == handle) {
 582                                 if (adev->uvd.filp[i] != ctx->parser->filp) {
 583                                         DRM_ERROR("UVD handle collision detected!\n");
 584                                         return -EINVAL;
 585                                 }
 586                                 return 0;
 587                         }
 588                 }
 589
 590                 DRM_ERROR("Invalid UVD handle 0x%x!\n", handle);
 591                 return -ENOENT;
 592
 593         case 2:
 594                 /* it's a destroy msg, free the handle */
 595                 for (i = 0; i < AMDGPU_MAX_UVD_HANDLES; ++i)
 596                         atomic_cmpxchg(&adev->uvd.handles[i], handle, 0);
 597                 amdgpu_bo_kunmap(bo);
 598                 return 0;
 599
 600         default:
 601                 DRM_ERROR("Illegal UVD message type (%d)!\n", msg_type);
 602                 return -EINVAL;
 603         }
 604         BUG();
 605         return -EINVAL;
 606 }
 607
 608 /**
 609  * amdgpu_uvd_cs_pass2 - second parsing round
 610  *
 611  * @ctx: UVD parser context
 612  *
 613  * Patch buffer addresses, make sure buffer sizes are correct.
 614  */
 615 static int amdgpu_uvd_cs_pass2(struct amdgpu_uvd_cs_ctx *ctx)
 616 {
 617         struct amdgpu_bo_va_mapping *mapping;
 618         struct amdgpu_bo *bo;
 619         struct amdgpu_ib *ib;
 620         uint32_t cmd, lo, hi;
 621         uint64_t start, end;
 622         uint64_t addr;
 623         int r;
 624
 625         lo = amdgpu_get_ib_value(ctx->parser, ctx->ib_idx, ctx->data0);
 626         hi = amdgpu_get_ib_value(ctx->parser, ctx->ib_idx, ctx->data1);
 627         addr = ((uint64_t)lo) | (((uint64_t)hi) << 32);
 628
 629         mapping = amdgpu_cs_find_mapping(ctx->parser, addr, &bo);
 630         if (mapping == NULL)
 631                 return -EINVAL;
 632
 633         start = amdgpu_bo_gpu_offset(bo);
 634
 635         end = (mapping->it.last + 1 - mapping->it.start);
 636         end = end * AMDGPU_GPU_PAGE_SIZE + start;
 637
 638         addr -= ((uint64_t)mapping->it.start) * AMDGPU_GPU_PAGE_SIZE;
 639         start += addr;
 640
 641         ib = &ctx->parser->ibs[ctx->ib_idx];
 642         ib->ptr[ctx->data0] = start & 0xFFFFFFFF;
 643         ib->ptr[ctx->data1] = start >> 32;
 644
 645         cmd = amdgpu_get_ib_value(ctx->parser, ctx->ib_idx, ctx->idx) >> 1;
 646         if (cmd < 0x4) {
 647                 if ((end - start) < ctx->buf_sizes[cmd]) {
 648                         DRM_ERROR("buffer (%d) to small (%d / %d)!\n", cmd,
 649                                   (unsigned)(end - start),
 650                                   ctx->buf_sizes[cmd]);
 651                         return -EINVAL;
 652                 }
 653
 654         } else if (cmd == 0x206) {
 655                 if ((end - start) < ctx->buf_sizes[4]) {
 656                         DRM_ERROR("buffer (%d) to small (%d / %d)!\n", cmd,
 657                                           (unsigned)(end - start),
 658                                           ctx->buf_sizes[4]);
 659                         return -EINVAL;
 660                 }
 661         } else if ((cmd != 0x100) && (cmd != 0x204)) {
 662                 DRM_ERROR("invalid UVD command %X!\n", cmd);
 663                 return -EINVAL;
 664         }
 665
 666         if (!ctx->parser->adev->uvd.address_64_bit) {
 667                 if ((start >> 28) != ((end - 1) >> 28)) {
 668                         DRM_ERROR("reloc %LX-%LX crossing 256MB boundary!\n",
 669                                   start, end);
 670                         return -EINVAL;
 671                 }
 672
 673                 if ((cmd == 0 || cmd == 0x3) &&
 674                     (start >> 28) != (ctx->parser->adev->uvd.gpu_addr >> 28)) {
 675                         DRM_ERROR("msg/fb buffer %LX-%LX out of 256MB segment!\n",
 676                                   start, end);
 677                         return -EINVAL;
 678                 }
 679         }
 680
 681         if (cmd == 0) {
 682                 ctx->has_msg_cmd = true;
 683                 r = amdgpu_uvd_cs_msg(ctx, bo, addr);
 684                 if (r)
 685                         return r;
 686         } else if (!ctx->has_msg_cmd) {
 687                 DRM_ERROR("Message needed before other commands are send!\n");
 688                 return -EINVAL;
 689         }
 690
 691         return 0;
 692 }
 693
 694 /**
 695  * amdgpu_uvd_cs_reg - parse register writes
 696  *
 697  * @ctx: UVD parser context
 698  * @cb: callback function
 699  *
 700  * Parse the register writes, call cb on each complete command.
 701  */
 702 static int amdgpu_uvd_cs_reg(struct amdgpu_uvd_cs_ctx *ctx,
 703                              int (*cb)(struct amdgpu_uvd_cs_ctx *ctx))
 704 {
 705         struct amdgpu_ib *ib = &ctx->parser->ibs[ctx->ib_idx];
 706         int i, r;
 707
 708         ctx->idx++;
 709         for (i = 0; i <= ctx->count; ++i) {
 710                 unsigned reg = ctx->reg + i;
 711
 712                 if (ctx->idx >= ib->length_dw) {
 713                         DRM_ERROR("Register command after end of CS!\n");
 714                         return -EINVAL;
 715                 }
 716
 717                 switch (reg) {
 718                 case mmUVD_GPCOM_VCPU_DATA0:
 719                         ctx->data0 = ctx->idx;
 720                         break;
 721                 case mmUVD_GPCOM_VCPU_DATA1:
 722                         ctx->data1 = ctx->idx;
 723                         break;
 724                 case mmUVD_GPCOM_VCPU_CMD:
 725                         r = cb(ctx);
 726                         if (r)
 727                                 return r;
 728                         break;
 729                 case mmUVD_ENGINE_CNTL:
 730                         break;
 731                 default:
 732                         DRM_ERROR("Invalid reg 0x%X!\n", reg);
 733                         return -EINVAL;
 734                 }
 735                 ctx->idx++;
 736         }
 737         return 0;
 738 }
 739
 740 /**
 741  * amdgpu_uvd_cs_packets - parse UVD packets
 742  *
 743  * @ctx: UVD parser context
 744  * @cb: callback function
 745  *
 746  * Parse the command stream packets.
 747  */
 748 static int amdgpu_uvd_cs_packets(struct amdgpu_uvd_cs_ctx *ctx,
 749                                  int (*cb)(struct amdgpu_uvd_cs_ctx *ctx))
 750 {
 751         struct amdgpu_ib *ib = &ctx->parser->ibs[ctx->ib_idx];
 752         int r;
 753
 754         for (ctx->idx = 0 ; ctx->idx < ib->length_dw; ) {
 755                 uint32_t cmd = amdgpu_get_ib_value(ctx->parser, ctx->ib_idx, ctx->idx);
 756                 unsigned type = CP_PACKET_GET_TYPE(cmd);
 757                 switch (type) {
 758                 case PACKET_TYPE0:
 759                         ctx->reg = CP_PACKET0_GET_REG(cmd);
 760                         ctx->count = CP_PACKET_GET_COUNT(cmd);
 761                         r = amdgpu_uvd_cs_reg(ctx, cb);
 762                         if (r)
 763                                 return r;
 764                         break;
 765                 case PACKET_TYPE2:
 766                         ++ctx->idx;
 767                         break;
 768                 default:
 769                         DRM_ERROR("Unknown packet type %d !\n", type);
 770                         return -EINVAL;
 771                 }
 772         }
 773         return 0;
 774 }
 775
 776 /**
 777  * amdgpu_uvd_ring_parse_cs - UVD command submission parser
 778  *
 779  * @parser: Command submission parser context
 780  *
 781  * Parse the command stream, patch in addresses as necessary.
 782  */
 783 int amdgpu_uvd_ring_parse_cs(struct amdgpu_cs_parser *parser, uint32_t ib_idx)
 784 {
 785         struct amdgpu_uvd_cs_ctx ctx = {};
 786         unsigned buf_sizes[] = {
 787                 [0x00000000]    =       2048,
 788                 [0x00000001]    =       0xFFFFFFFF,
 789                 [0x00000002]    =       0xFFFFFFFF,
 790                 [0x00000003]    =       2048,
 791                 [0x00000004]    =       0xFFFFFFFF,
 792         };
 793         struct amdgpu_ib *ib = &parser->ibs[ib_idx];
 794         int r;
 795
 796         if (ib->length_dw % 16) {
 797                 DRM_ERROR("UVD IB length (%d) not 16 dwords aligned!\n",
 798                           ib->length_dw);
 799                 return -EINVAL;
 800         }
 801
 802         ctx.parser = parser;
 803         ctx.buf_sizes = buf_sizes;
 804         ctx.ib_idx = ib_idx;
 805
 806         /* first round, make sure the buffers are actually in the UVD segment */
 807         r = amdgpu_uvd_cs_packets(&ctx, amdgpu_uvd_cs_pass1);
 808         if (r)
 809                 return r;
 810
 811         /* second round, patch buffer addresses into the command stream */
 812         r = amdgpu_uvd_cs_packets(&ctx, amdgpu_uvd_cs_pass2);
 813         if (r)
 814                 return r;
 815
 816         if (!ctx.has_msg_cmd) {
 817                 DRM_ERROR("UVD-IBs need a msg command!\n");
 818                 return -EINVAL;
 819         }
 820
 821         amdgpu_uvd_note_usage(ctx.parser->adev);
 822
 823         return 0;
 824 }
 825
 826 static int amdgpu_uvd_free_job(
 827         struct amdgpu_job *job)
 828 {
 829         amdgpu_ib_free(job->adev, job->ibs);
 830         kfree(job->ibs);
 831         return 0;
 832 }
 833
 834 static int amdgpu_uvd_send_msg(struct amdgpu_ring *ring,
 835                                struct amdgpu_bo *bo,
 836                                struct fence **fence)
 837 {
 838         struct ttm_validate_buffer tv;
 839         struct ww_acquire_ctx ticket;
 840         struct list_head head;
 841         struct amdgpu_ib *ib = NULL;
 842         struct fence *f = NULL;
 843         struct amdgpu_device *adev = ring->adev;
 844         uint64_t addr;
 845         int i, r;
 846
 847         memset(&tv, 0, sizeof(tv));
 848         tv.bo = &bo->tbo;
 849
 850         INIT_LIST_HEAD(&head);
 851         list_add(&tv.head, &head);
 852
 853         r = ttm_eu_reserve_buffers(&ticket, &head, true, NULL);
 854         if (r)
 855                 return r;
 856
 857         if (!bo->adev->uvd.address_64_bit) {
 858                 amdgpu_ttm_placement_from_domain(bo, AMDGPU_GEM_DOMAIN_VRAM);
 859                 amdgpu_uvd_force_into_uvd_segment(bo);
 860         }
 861
 862         r = ttm_bo_validate(&bo->tbo, &bo->placement, true, false);
 863         if (r)
 864                 goto err;
 865         ib = kzalloc(sizeof(struct amdgpu_ib), GFP_KERNEL);
 866         if (!ib) {
 867                 r = -ENOMEM;
 868                 goto err;
 869         }
 870         r = amdgpu_ib_get(ring, NULL, 64, ib);
 871         if (r)
 872                 goto err1;
 873
 874         addr = amdgpu_bo_gpu_offset(bo);
 875         ib->ptr[0] = PACKET0(mmUVD_GPCOM_VCPU_DATA0, 0);
 876         ib->ptr[1] = addr;
 877         ib->ptr[2] = PACKET0(mmUVD_GPCOM_VCPU_DATA1, 0);
 878         ib->ptr[3] = addr >> 32;
 879         ib->ptr[4] = PACKET0(mmUVD_GPCOM_VCPU_CMD, 0);
 880         ib->ptr[5] = 0;
 881         for (i = 6; i < 16; ++i)
 882                 ib->ptr[i] = PACKET2(0);
 883         ib->length_dw = 16;
 884
 885         r = amdgpu_sched_ib_submit_kernel_helper(adev, ring, ib, 1,
 886                                                  &amdgpu_uvd_free_job,
 887                                                  AMDGPU_FENCE_OWNER_UNDEFINED,
 888                                                  &f);
 889         if (r)
 890                 goto err2;
 891
 892         ttm_eu_fence_buffer_objects(&ticket, &head, f);
 893
 894         if (fence)
 895                 *fence = fence_get(f);
 896         amdgpu_bo_unref(&bo);
 897         fence_put(f);
 898         if (amdgpu_enable_scheduler)
 899                 return 0;
 900
 901         amdgpu_ib_free(ring->adev, ib);
 902         kfree(ib);
 903         return 0;
 904 err2:
 905         amdgpu_ib_free(ring->adev, ib);
 906 err1:
 907         kfree(ib);
 908 err:
 909         ttm_eu_backoff_reservation(&ticket, &head);
 910         return r;
 911 }
 912
 913 /* multiple fence commands without any stream commands in between can
 914    crash the vcpu so just try to emmit a dummy create/destroy msg to
 915    avoid this */
 916 int amdgpu_uvd_get_create_msg(struct amdgpu_ring *ring, uint32_t handle,
 917                               struct fence **fence)
 918 {
 919         struct amdgpu_device *adev = ring->adev;
 920         struct amdgpu_bo *bo;
 921         uint32_t *msg;
 922         int r, i;
 923
 924         r = amdgpu_bo_create(adev, 1024, PAGE_SIZE, true,
 925                              AMDGPU_GEM_DOMAIN_VRAM,
 926                              AMDGPU_GEM_CREATE_CPU_ACCESS_REQUIRED,
 927                              NULL, NULL, &bo);
 928         if (r)
 929                 return r;
 930
 931         r = amdgpu_bo_reserve(bo, false);
 932         if (r) {
 933                 amdgpu_bo_unref(&bo);
 934                 return r;
 935         }
 936
 937         r = amdgpu_bo_kmap(bo, (void **)&msg);
 938         if (r) {
 939                 amdgpu_bo_unreserve(bo);
 940                 amdgpu_bo_unref(&bo);
 941                 return r;
 942         }
 943
 944         /* stitch together an UVD create msg */
 945         msg[0] = cpu_to_le32(0x00000de4);
 946         msg[1] = cpu_to_le32(0x00000000);
 947         msg[2] = cpu_to_le32(handle);
 948         msg[3] = cpu_to_le32(0x00000000);
 949         msg[4] = cpu_to_le32(0x00000000);
 950         msg[5] = cpu_to_le32(0x00000000);
 951         msg[6] = cpu_to_le32(0x00000000);
 952         msg[7] = cpu_to_le32(0x00000780);
 953         msg[8] = cpu_to_le32(0x00000440);
 954         msg[9] = cpu_to_le32(0x00000000);
 955         msg[10] = cpu_to_le32(0x01b37000);
 956         for (i = 11; i < 1024; ++i)
 957                 msg[i] = cpu_to_le32(0x0);
 958
 959         amdgpu_bo_kunmap(bo);
 960         amdgpu_bo_unreserve(bo);
 961
 962         return amdgpu_uvd_send_msg(ring, bo, fence);
 963 }
 964
 965 int amdgpu_uvd_get_destroy_msg(struct amdgpu_ring *ring, uint32_t handle,
 966                                struct fence **fence)
 967 {
 968         struct amdgpu_device *adev = ring->adev;
 969         struct amdgpu_bo *bo;
 970         uint32_t *msg;
 971         int r, i;
 972
 973         r = amdgpu_bo_create(adev, 1024, PAGE_SIZE, true,
 974                              AMDGPU_GEM_DOMAIN_VRAM,
 975                              AMDGPU_GEM_CREATE_CPU_ACCESS_REQUIRED,
 976                              NULL, NULL, &bo);
 977         if (r)
 978                 return r;
 979
 980         r = amdgpu_bo_reserve(bo, false);
 981         if (r) {
 982                 amdgpu_bo_unref(&bo);
 983                 return r;
 984         }
 985
 986         r = amdgpu_bo_kmap(bo, (void **)&msg);
 987         if (r) {
 988                 amdgpu_bo_unreserve(bo);
 989                 amdgpu_bo_unref(&bo);
 990                 return r;
 991         }
 992
 993         /* stitch together an UVD destroy msg */
 994         msg[0] = cpu_to_le32(0x00000de4);
 995         msg[1] = cpu_to_le32(0x00000002);
 996         msg[2] = cpu_to_le32(handle);
 997         msg[3] = cpu_to_le32(0x00000000);
 998         for (i = 4; i < 1024; ++i)
 999                 msg[i] = cpu_to_le32(0x0);
1000
1001         amdgpu_bo_kunmap(bo);
1002         amdgpu_bo_unreserve(bo);
1003
1004         return amdgpu_uvd_send_msg(ring, bo, fence);
1005 }
1006
1007 static void amdgpu_uvd_idle_work_handler(struct work_struct *work)
1008 {
1009         struct amdgpu_device *adev =
1010                 container_of(work, struct amdgpu_device, uvd.idle_work.work);
1011         unsigned i, fences, handles = 0;
1012
1013         fences = amdgpu_fence_count_emitted(&adev->uvd.ring);
1014
1015         for (i = 0; i < AMDGPU_MAX_UVD_HANDLES; ++i)
1016                 if (atomic_read(&adev->uvd.handles[i]))
1017                         ++handles;
1018
1019         if (fences == 0 && handles == 0) {
1020                 if (adev->pm.dpm_enabled) {
1021                         amdgpu_dpm_enable_uvd(adev, false);
1022                 } else {
1023                         amdgpu_asic_set_uvd_clocks(adev, 0, 0);
1024                 }
1025         } else {
1026                 schedule_delayed_work(&adev->uvd.idle_work,
1027                                       msecs_to_jiffies(UVD_IDLE_TIMEOUT_MS));
1028         }
1029 }
1030
1031 static void amdgpu_uvd_note_usage(struct amdgpu_device *adev)
1032 {
1033         bool set_clocks = !cancel_delayed_work_sync(&adev->uvd.idle_work);
1034         set_clocks &= schedule_delayed_work(&adev->uvd.idle_work,
1035                                             msecs_to_jiffies(UVD_IDLE_TIMEOUT_MS));
1036
1037         if (set_clocks) {
1038                 if (adev->pm.dpm_enabled) {
1039                         amdgpu_dpm_enable_uvd(adev, true);
1040                 } else {
1041                         amdgpu_asic_set_uvd_clocks(adev, 53300, 40000);
1042                 }
1043         }
1044 }