drivers/gpu/drm/radeon/radeon_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 "radeon.h"
  37 #include "r600d.h"
  38
  39 /* 1 second timeout */
  40 #define UVD_IDLE_TIMEOUT_MS     1000
  41
  42 /* Firmware Names */
  43 #define FIRMWARE_RV710          "radeon/RV710_uvd.bin"
  44 #define FIRMWARE_CYPRESS        "radeon/CYPRESS_uvd.bin"
  45 #define FIRMWARE_SUMO           "radeon/SUMO_uvd.bin"
  46 #define FIRMWARE_TAHITI         "radeon/TAHITI_uvd.bin"
  47 #define FIRMWARE_BONAIRE        "radeon/BONAIRE_uvd.bin"
  48
  49 MODULE_FIRMWARE(FIRMWARE_RV710);
  50 MODULE_FIRMWARE(FIRMWARE_CYPRESS);
  51 MODULE_FIRMWARE(FIRMWARE_SUMO);
  52 MODULE_FIRMWARE(FIRMWARE_TAHITI);
  53 MODULE_FIRMWARE(FIRMWARE_BONAIRE);
  54
  55 static void radeon_uvd_idle_work_handler(struct work_struct *work);
  56
  57 int radeon_uvd_init(struct radeon_device *rdev)
  58 {
  59         unsigned long bo_size;
  60         const char *fw_name;
  61         int i, r;
  62
  63         INIT_DELAYED_WORK(&rdev->uvd.idle_work, radeon_uvd_idle_work_handler);
  64
  65         switch (rdev->family) {
  66         case CHIP_RV710:
  67         case CHIP_RV730:
  68         case CHIP_RV740:
  69                 fw_name = FIRMWARE_RV710;
  70                 break;
  71
  72         case CHIP_CYPRESS:
  73         case CHIP_HEMLOCK:
  74         case CHIP_JUNIPER:
  75         case CHIP_REDWOOD:
  76         case CHIP_CEDAR:
  77                 fw_name = FIRMWARE_CYPRESS;
  78                 break;
  79
  80         case CHIP_SUMO:
  81         case CHIP_SUMO2:
  82         case CHIP_PALM:
  83         case CHIP_CAYMAN:
  84         case CHIP_BARTS:
  85         case CHIP_TURKS:
  86         case CHIP_CAICOS:
  87                 fw_name = FIRMWARE_SUMO;
  88                 break;
  89
  90         case CHIP_TAHITI:
  91         case CHIP_VERDE:
  92         case CHIP_PITCAIRN:
  93         case CHIP_ARUBA:
  94                 fw_name = FIRMWARE_TAHITI;
  95                 break;
  96
  97         case CHIP_BONAIRE:
  98         case CHIP_KABINI:
  99         case CHIP_KAVERI:
 100                 fw_name = FIRMWARE_BONAIRE;
 101                 break;
 102
 103         default:
 104                 return -EINVAL;
 105         }
 106
 107         r = request_firmware(&rdev->uvd_fw, fw_name, rdev->dev);
 108         if (r) {
 109                 dev_err(rdev->dev, "radeon_uvd: Can't load firmware \"%s\"\n",
 110                         fw_name);
 111                 return r;
 112         }
 113
 114         bo_size = RADEON_GPU_PAGE_ALIGN(rdev->uvd_fw->size + 8) +
 115                   RADEON_UVD_STACK_SIZE + RADEON_UVD_HEAP_SIZE;
 116         r = radeon_bo_create(rdev, bo_size, PAGE_SIZE, true,
 117                              RADEON_GEM_DOMAIN_VRAM, NULL, &rdev->uvd.vcpu_bo);
 118         if (r) {
 119                 dev_err(rdev->dev, "(%d) failed to allocate UVD bo\n", r);
 120                 return r;
 121         }
 122
 123         r = radeon_bo_reserve(rdev->uvd.vcpu_bo, false);
 124         if (r) {
 125                 radeon_bo_unref(&rdev->uvd.vcpu_bo);
 126                 dev_err(rdev->dev, "(%d) failed to reserve UVD bo\n", r);
 127                 return r;
 128         }
 129
 130         r = radeon_bo_pin(rdev->uvd.vcpu_bo, RADEON_GEM_DOMAIN_VRAM,
 131                           &rdev->uvd.gpu_addr);
 132         if (r) {
 133                 radeon_bo_unreserve(rdev->uvd.vcpu_bo);
 134                 radeon_bo_unref(&rdev->uvd.vcpu_bo);
 135                 dev_err(rdev->dev, "(%d) UVD bo pin failed\n", r);
 136                 return r;
 137         }
 138
 139         r = radeon_bo_kmap(rdev->uvd.vcpu_bo, &rdev->uvd.cpu_addr);
 140         if (r) {
 141                 dev_err(rdev->dev, "(%d) UVD map failed\n", r);
 142                 return r;
 143         }
 144
 145         radeon_bo_unreserve(rdev->uvd.vcpu_bo);
 146
 147         for (i = 0; i < RADEON_MAX_UVD_HANDLES; ++i) {
 148                 atomic_set(&rdev->uvd.handles[i], 0);
 149                 rdev->uvd.filp[i] = NULL;
 150                 rdev->uvd.img_size[i] = 0;
 151         }
 152
 153         return 0;
 154 }
 155
 156 void radeon_uvd_fini(struct radeon_device *rdev)
 157 {
 158         int r;
 159
 160         if (rdev->uvd.vcpu_bo == NULL)
 161                 return;
 162
 163         r = radeon_bo_reserve(rdev->uvd.vcpu_bo, false);
 164         if (!r) {
 165                 radeon_bo_kunmap(rdev->uvd.vcpu_bo);
 166                 radeon_bo_unpin(rdev->uvd.vcpu_bo);
 167                 radeon_bo_unreserve(rdev->uvd.vcpu_bo);
 168         }
 169
 170         radeon_bo_unref(&rdev->uvd.vcpu_bo);
 171
 172         release_firmware(rdev->uvd_fw);
 173 }
 174
 175 int radeon_uvd_suspend(struct radeon_device *rdev)
 176 {
 177         unsigned size;
 178         void *ptr;
 179         int i;
 180
 181         if (rdev->uvd.vcpu_bo == NULL)
 182                 return 0;
 183
 184         for (i = 0; i < RADEON_MAX_UVD_HANDLES; ++i)
 185                 if (atomic_read(&rdev->uvd.handles[i]))
 186                         break;
 187
 188         if (i == RADEON_MAX_UVD_HANDLES)
 189                 return 0;
 190
 191         size = radeon_bo_size(rdev->uvd.vcpu_bo);
 192         size -= rdev->uvd_fw->size;
 193
 194         ptr = rdev->uvd.cpu_addr;
 195         ptr += rdev->uvd_fw->size;
 196
 197         rdev->uvd.saved_bo = kmalloc(size, GFP_KERNEL);
 198         memcpy(rdev->uvd.saved_bo, ptr, size);
 199
 200         return 0;
 201 }
 202
 203 int radeon_uvd_resume(struct radeon_device *rdev)
 204 {
 205         unsigned size;
 206         void *ptr;
 207
 208         if (rdev->uvd.vcpu_bo == NULL)
 209                 return -EINVAL;
 210
 211         memcpy(rdev->uvd.cpu_addr, rdev->uvd_fw->data, rdev->uvd_fw->size);
 212
 213         size = radeon_bo_size(rdev->uvd.vcpu_bo);
 214         size -= rdev->uvd_fw->size;
 215
 216         ptr = rdev->uvd.cpu_addr;
 217         ptr += rdev->uvd_fw->size;
 218
 219         if (rdev->uvd.saved_bo != NULL) {
 220                 memcpy(ptr, rdev->uvd.saved_bo, size);
 221                 kfree(rdev->uvd.saved_bo);
 222                 rdev->uvd.saved_bo = NULL;
 223         } else
 224                 memset(ptr, 0, size);
 225
 226         return 0;
 227 }
 228
 229 void radeon_uvd_force_into_uvd_segment(struct radeon_bo *rbo)
 230 {
 231         rbo->placement.fpfn = 0 >> PAGE_SHIFT;
 232         rbo->placement.lpfn = (256 * 1024 * 1024) >> PAGE_SHIFT;
 233 }
 234
 235 void radeon_uvd_free_handles(struct radeon_device *rdev, struct drm_file *filp)
 236 {
 237         int i, r;
 238         for (i = 0; i < RADEON_MAX_UVD_HANDLES; ++i) {
 239                 uint32_t handle = atomic_read(&rdev->uvd.handles[i]);
 240                 if (handle != 0 && rdev->uvd.filp[i] == filp) {
 241                         struct radeon_fence *fence;
 242
 243                         r = radeon_uvd_get_destroy_msg(rdev,
 244                                 R600_RING_TYPE_UVD_INDEX, handle, &fence);
 245                         if (r) {
 246                                 DRM_ERROR("Error destroying UVD (%d)!\n", r);
 247                                 continue;
 248                         }
 249
 250                         radeon_fence_wait(fence, false);
 251                         radeon_fence_unref(&fence);
 252
 253                         rdev->uvd.filp[i] = NULL;
 254                         atomic_set(&rdev->uvd.handles[i], 0);
 255                 }
 256         }
 257 }
 258
 259 static int radeon_uvd_cs_msg_decode(uint32_t *msg, unsigned buf_sizes[])
 260 {
 261         unsigned stream_type = msg[4];
 262         unsigned width = msg[6];
 263         unsigned height = msg[7];
 264         unsigned dpb_size = msg[9];
 265         unsigned pitch = msg[28];
 266
 267         unsigned width_in_mb = width / 16;
 268         unsigned height_in_mb = ALIGN(height / 16, 2);
 269
 270         unsigned image_size, tmp, min_dpb_size;
 271
 272         image_size = width * height;
 273         image_size += image_size / 2;
 274         image_size = ALIGN(image_size, 1024);
 275
 276         switch (stream_type) {
 277         case 0: /* H264 */
 278
 279                 /* reference picture buffer */
 280                 min_dpb_size = image_size * 17;
 281
 282                 /* macroblock context buffer */
 283                 min_dpb_size += width_in_mb * height_in_mb * 17 * 192;
 284
 285                 /* IT surface buffer */
 286                 min_dpb_size += width_in_mb * height_in_mb * 32;
 287                 break;
 288
 289         case 1: /* VC1 */
 290
 291                 /* reference picture buffer */
 292                 min_dpb_size = image_size * 3;
 293
 294                 /* CONTEXT_BUFFER */
 295                 min_dpb_size += width_in_mb * height_in_mb * 128;
 296
 297                 /* IT surface buffer */
 298                 min_dpb_size += width_in_mb * 64;
 299
 300                 /* DB surface buffer */
 301                 min_dpb_size += width_in_mb * 128;
 302
 303                 /* BP */
 304                 tmp = max(width_in_mb, height_in_mb);
 305                 min_dpb_size += ALIGN(tmp * 7 * 16, 64);
 306                 break;
 307
 308         case 3: /* MPEG2 */
 309
 310                 /* reference picture buffer */
 311                 min_dpb_size = image_size * 3;
 312                 break;
 313
 314         case 4: /* MPEG4 */
 315
 316                 /* reference picture buffer */
 317                 min_dpb_size = image_size * 3;
 318
 319                 /* CM */
 320                 min_dpb_size += width_in_mb * height_in_mb * 64;
 321
 322                 /* IT surface buffer */
 323                 min_dpb_size += ALIGN(width_in_mb * height_in_mb * 32, 64);
 324                 break;
 325
 326         default:
 327                 DRM_ERROR("UVD codec not handled %d!\n", stream_type);
 328                 return -EINVAL;
 329         }
 330
 331         if (width > pitch) {
 332                 DRM_ERROR("Invalid UVD decoding target pitch!\n");
 333                 return -EINVAL;
 334         }
 335
 336         if (dpb_size < min_dpb_size) {
 337                 DRM_ERROR("Invalid dpb_size in UVD message (%d / %d)!\n",
 338                           dpb_size, min_dpb_size);
 339                 return -EINVAL;
 340         }
 341
 342         buf_sizes[0x1] = dpb_size;
 343         buf_sizes[0x2] = image_size;
 344         return 0;
 345 }
 346
 347 static int radeon_uvd_cs_msg(struct radeon_cs_parser *p, struct radeon_bo *bo,
 348                              unsigned offset, unsigned buf_sizes[])
 349 {
 350         int32_t *msg, msg_type, handle;
 351         unsigned img_size = 0;
 352         void *ptr;
 353
 354         int i, r;
 355
 356         if (offset & 0x3F) {
 357                 DRM_ERROR("UVD messages must be 64 byte aligned!\n");
 358                 return -EINVAL;
 359         }
 360
 361         if (bo->tbo.sync_obj) {
 362                 r = radeon_fence_wait(bo->tbo.sync_obj, false);
 363                 if (r) {
 364                         DRM_ERROR("Failed waiting for UVD message (%d)!\n", r);
 365                         return r;
 366                 }
 367         }
 368
 369         r = radeon_bo_kmap(bo, &ptr);
 370         if (r) {
 371                 DRM_ERROR("Failed mapping the UVD message (%d)!\n", r);
 372                 return r;
 373         }
 374
 375         msg = ptr + offset;
 376
 377         msg_type = msg[1];
 378         handle = msg[2];
 379
 380         if (handle == 0) {
 381                 DRM_ERROR("Invalid UVD handle!\n");
 382                 return -EINVAL;
 383         }
 384
 385         if (msg_type == 1) {
 386                 /* it's a decode msg, calc buffer sizes */
 387                 r = radeon_uvd_cs_msg_decode(msg, buf_sizes);
 388                 /* calc image size (width * height) */
 389                 img_size = msg[6] * msg[7];
 390                 radeon_bo_kunmap(bo);
 391                 if (r)
 392                         return r;
 393
 394         } else if (msg_type == 2) {
 395                 /* it's a destroy msg, free the handle */
 396                 for (i = 0; i < RADEON_MAX_UVD_HANDLES; ++i)
 397                         atomic_cmpxchg(&p->rdev->uvd.handles[i], handle, 0);
 398                 radeon_bo_kunmap(bo);
 399                 return 0;
 400         } else {
 401                 /* it's a create msg, calc image size (width * height) */
 402                 img_size = msg[7] * msg[8];
 403                 radeon_bo_kunmap(bo);
 404
 405                 if (msg_type != 0) {
 406                         DRM_ERROR("Illegal UVD message type (%d)!\n", msg_type);
 407                         return -EINVAL;
 408                 }
 409
 410                 /* it's a create msg, no special handling needed */
 411         }
 412
 413         /* create or decode, validate the handle */
 414         for (i = 0; i < RADEON_MAX_UVD_HANDLES; ++i) {
 415                 if (atomic_read(&p->rdev->uvd.handles[i]) == handle)
 416                         return 0;
 417         }
 418
 419         /* handle not found try to alloc a new one */
 420         for (i = 0; i < RADEON_MAX_UVD_HANDLES; ++i) {
 421                 if (!atomic_cmpxchg(&p->rdev->uvd.handles[i], 0, handle)) {
 422                         p->rdev->uvd.filp[i] = p->filp;
 423                         p->rdev->uvd.img_size[i] = img_size;
 424                         return 0;
 425                 }
 426         }
 427
 428         DRM_ERROR("No more free UVD handles!\n");
 429         return -EINVAL;
 430 }
 431
 432 static int radeon_uvd_cs_reloc(struct radeon_cs_parser *p,
 433                                int data0, int data1,
 434                                unsigned buf_sizes[], bool *has_msg_cmd)
 435 {
 436         struct radeon_cs_chunk *relocs_chunk;
 437         struct radeon_cs_reloc *reloc;
 438         unsigned idx, cmd, offset;
 439         uint64_t start, end;
 440         int r;
 441
 442         relocs_chunk = &p->chunks[p->chunk_relocs_idx];
 443         offset = radeon_get_ib_value(p, data0);
 444         idx = radeon_get_ib_value(p, data1);
 445         if (idx >= relocs_chunk->length_dw) {
 446                 DRM_ERROR("Relocs at %d after relocations chunk end %d !\n",
 447                           idx, relocs_chunk->length_dw);
 448                 return -EINVAL;
 449         }
 450
 451         reloc = p->relocs_ptr[(idx / 4)];
 452         start = reloc->lobj.gpu_offset;
 453         end = start + radeon_bo_size(reloc->robj);
 454         start += offset;
 455
 456         p->ib.ptr[data0] = start & 0xFFFFFFFF;
 457         p->ib.ptr[data1] = start >> 32;
 458
 459         cmd = radeon_get_ib_value(p, p->idx) >> 1;
 460
 461         if (cmd < 0x4) {
 462                 if ((end - start) < buf_sizes[cmd]) {
 463                         DRM_ERROR("buffer (%d) to small (%d / %d)!\n", cmd,
 464                                   (unsigned)(end - start), buf_sizes[cmd]);
 465                         return -EINVAL;
 466                 }
 467
 468         } else if (cmd != 0x100) {
 469                 DRM_ERROR("invalid UVD command %X!\n", cmd);
 470                 return -EINVAL;
 471         }
 472
 473         if ((start >> 28) != (end >> 28)) {
 474                 DRM_ERROR("reloc %LX-%LX crossing 256MB boundary!\n",
 475                           start, end);
 476                 return -EINVAL;
 477         }
 478
 479         /* TODO: is this still necessary on NI+ ? */
 480         if ((cmd == 0 || cmd == 0x3) &&
 481             (start >> 28) != (p->rdev->uvd.gpu_addr >> 28)) {
 482                 DRM_ERROR("msg/fb buffer %LX-%LX out of 256MB segment!\n",
 483                           start, end);
 484                 return -EINVAL;
 485         }
 486
 487         if (cmd == 0) {
 488                 if (*has_msg_cmd) {
 489                         DRM_ERROR("More than one message in a UVD-IB!\n");
 490                         return -EINVAL;
 491                 }
 492                 *has_msg_cmd = true;
 493                 r = radeon_uvd_cs_msg(p, reloc->robj, offset, buf_sizes);
 494                 if (r)
 495                         return r;
 496         } else if (!*has_msg_cmd) {
 497                 DRM_ERROR("Message needed before other commands are send!\n");
 498                 return -EINVAL;
 499         }
 500
 501         return 0;
 502 }
 503
 504 static int radeon_uvd_cs_reg(struct radeon_cs_parser *p,
 505                              struct radeon_cs_packet *pkt,
 506                              int *data0, int *data1,
 507                              unsigned buf_sizes[],
 508                              bool *has_msg_cmd)
 509 {
 510         int i, r;
 511
 512         p->idx++;
 513         for (i = 0; i <= pkt->count; ++i) {
 514                 switch (pkt->reg + i*4) {
 515                 case UVD_GPCOM_VCPU_DATA0:
 516                         *data0 = p->idx;
 517                         break;
 518                 case UVD_GPCOM_VCPU_DATA1:
 519                         *data1 = p->idx;
 520                         break;
 521                 case UVD_GPCOM_VCPU_CMD:
 522                         r = radeon_uvd_cs_reloc(p, *data0, *data1,
 523                                                 buf_sizes, has_msg_cmd);
 524                         if (r)
 525                                 return r;
 526                         break;
 527                 case UVD_ENGINE_CNTL:
 528                         break;
 529                 default:
 530                         DRM_ERROR("Invalid reg 0x%X!\n",
 531                                   pkt->reg + i*4);
 532                         return -EINVAL;
 533                 }
 534                 p->idx++;
 535         }
 536         return 0;
 537 }
 538
 539 int radeon_uvd_cs_parse(struct radeon_cs_parser *p)
 540 {
 541         struct radeon_cs_packet pkt;
 542         int r, data0 = 0, data1 = 0;
 543
 544         /* does the IB has a msg command */
 545         bool has_msg_cmd = false;
 546
 547         /* minimum buffer sizes */
 548         unsigned buf_sizes[] = {
 549                 [0x00000000]    =       2048,
 550                 [0x00000001]    =       32 * 1024 * 1024,
 551                 [0x00000002]    =       2048 * 1152 * 3,
 552                 [0x00000003]    =       2048,
 553         };
 554
 555         if (p->chunks[p->chunk_ib_idx].length_dw % 16) {
 556                 DRM_ERROR("UVD IB length (%d) not 16 dwords aligned!\n",
 557                           p->chunks[p->chunk_ib_idx].length_dw);
 558                 return -EINVAL;
 559         }
 560
 561         if (p->chunk_relocs_idx == -1) {
 562                 DRM_ERROR("No relocation chunk !\n");
 563                 return -EINVAL;
 564         }
 565
 566
 567         do {
 568                 r = radeon_cs_packet_parse(p, &pkt, p->idx);
 569                 if (r)
 570                         return r;
 571                 switch (pkt.type) {
 572                 case RADEON_PACKET_TYPE0:
 573                         r = radeon_uvd_cs_reg(p, &pkt, &data0, &data1,
 574                                               buf_sizes, &has_msg_cmd);
 575                         if (r)
 576                                 return r;
 577                         break;
 578                 case RADEON_PACKET_TYPE2:
 579                         p->idx += pkt.count + 2;
 580                         break;
 581                 default:
 582                         DRM_ERROR("Unknown packet type %d !\n", pkt.type);
 583                         return -EINVAL;
 584                 }
 585         } while (p->idx < p->chunks[p->chunk_ib_idx].length_dw);
 586
 587         if (!has_msg_cmd) {
 588                 DRM_ERROR("UVD-IBs need a msg command!\n");
 589                 return -EINVAL;
 590         }
 591
 592         return 0;
 593 }
 594
 595 static int radeon_uvd_send_msg(struct radeon_device *rdev,
 596                                int ring, struct radeon_bo *bo,
 597                                struct radeon_fence **fence)
 598 {
 599         struct ttm_validate_buffer tv;
 600         struct ww_acquire_ctx ticket;
 601         struct list_head head;
 602         struct radeon_ib ib;
 603         uint64_t addr;
 604         int i, r;
 605
 606         memset(&tv, 0, sizeof(tv));
 607         tv.bo = &bo->tbo;
 608
 609         INIT_LIST_HEAD(&head);
 610         list_add(&tv.head, &head);
 611
 612         r = ttm_eu_reserve_buffers(&ticket, &head);
 613         if (r)
 614                 return r;
 615
 616         radeon_ttm_placement_from_domain(bo, RADEON_GEM_DOMAIN_VRAM);
 617         radeon_uvd_force_into_uvd_segment(bo);
 618
 619         r = ttm_bo_validate(&bo->tbo, &bo->placement, true, false);
 620         if (r)
 621                 goto err;
 622
 623         r = radeon_ib_get(rdev, ring, &ib, NULL, 16);
 624         if (r)
 625                 goto err;
 626
 627         addr = radeon_bo_gpu_offset(bo);
 628         ib.ptr[0] = PACKET0(UVD_GPCOM_VCPU_DATA0, 0);
 629         ib.ptr[1] = addr;
 630         ib.ptr[2] = PACKET0(UVD_GPCOM_VCPU_DATA1, 0);
 631         ib.ptr[3] = addr >> 32;
 632         ib.ptr[4] = PACKET0(UVD_GPCOM_VCPU_CMD, 0);
 633         ib.ptr[5] = 0;
 634         for (i = 6; i < 16; ++i)
 635                 ib.ptr[i] = PACKET2(0);
 636         ib.length_dw = 16;
 637
 638         r = radeon_ib_schedule(rdev, &ib, NULL);
 639         if (r)
 640                 goto err;
 641         ttm_eu_fence_buffer_objects(&ticket, &head, ib.fence);
 642
 643         if (fence)
 644                 *fence = radeon_fence_ref(ib.fence);
 645
 646         radeon_ib_free(rdev, &ib);
 647         radeon_bo_unref(&bo);
 648         return 0;
 649
 650 err:
 651         ttm_eu_backoff_reservation(&ticket, &head);
 652         return r;
 653 }
 654
 655 /* multiple fence commands without any stream commands in between can
 656    crash the vcpu so just try to emmit a dummy create/destroy msg to
 657    avoid this */
 658 int radeon_uvd_get_create_msg(struct radeon_device *rdev, int ring,
 659                               uint32_t handle, struct radeon_fence **fence)
 660 {
 661         struct radeon_bo *bo;
 662         uint32_t *msg;
 663         int r, i;
 664
 665         r = radeon_bo_create(rdev, 1024, PAGE_SIZE, true,
 666                              RADEON_GEM_DOMAIN_VRAM, NULL, &bo);
 667         if (r)
 668                 return r;
 669
 670         r = radeon_bo_reserve(bo, false);
 671         if (r) {
 672                 radeon_bo_unref(&bo);
 673                 return r;
 674         }
 675
 676         r = radeon_bo_kmap(bo, (void **)&msg);
 677         if (r) {
 678                 radeon_bo_unreserve(bo);
 679                 radeon_bo_unref(&bo);
 680                 return r;
 681         }
 682
 683         /* stitch together an UVD create msg */
 684         msg[0] = cpu_to_le32(0x00000de4);
 685         msg[1] = cpu_to_le32(0x00000000);
 686         msg[2] = cpu_to_le32(handle);
 687         msg[3] = cpu_to_le32(0x00000000);
 688         msg[4] = cpu_to_le32(0x00000000);
 689         msg[5] = cpu_to_le32(0x00000000);
 690         msg[6] = cpu_to_le32(0x00000000);
 691         msg[7] = cpu_to_le32(0x00000780);
 692         msg[8] = cpu_to_le32(0x00000440);
 693         msg[9] = cpu_to_le32(0x00000000);
 694         msg[10] = cpu_to_le32(0x01b37000);
 695         for (i = 11; i < 1024; ++i)
 696                 msg[i] = cpu_to_le32(0x0);
 697
 698         radeon_bo_kunmap(bo);
 699         radeon_bo_unreserve(bo);
 700
 701         return radeon_uvd_send_msg(rdev, ring, bo, fence);
 702 }
 703
 704 int radeon_uvd_get_destroy_msg(struct radeon_device *rdev, int ring,
 705                                uint32_t handle, struct radeon_fence **fence)
 706 {
 707         struct radeon_bo *bo;
 708         uint32_t *msg;
 709         int r, i;
 710
 711         r = radeon_bo_create(rdev, 1024, PAGE_SIZE, true,
 712                              RADEON_GEM_DOMAIN_VRAM, NULL, &bo);
 713         if (r)
 714                 return r;
 715
 716         r = radeon_bo_reserve(bo, false);
 717         if (r) {
 718                 radeon_bo_unref(&bo);
 719                 return r;
 720         }
 721
 722         r = radeon_bo_kmap(bo, (void **)&msg);
 723         if (r) {
 724                 radeon_bo_unreserve(bo);
 725                 radeon_bo_unref(&bo);
 726                 return r;
 727         }
 728
 729         /* stitch together an UVD destroy msg */
 730         msg[0] = cpu_to_le32(0x00000de4);
 731         msg[1] = cpu_to_le32(0x00000002);
 732         msg[2] = cpu_to_le32(handle);
 733         msg[3] = cpu_to_le32(0x00000000);
 734         for (i = 4; i < 1024; ++i)
 735                 msg[i] = cpu_to_le32(0x0);
 736
 737         radeon_bo_kunmap(bo);
 738         radeon_bo_unreserve(bo);
 739
 740         return radeon_uvd_send_msg(rdev, ring, bo, fence);
 741 }
 742
 743 /**
 744  * radeon_uvd_count_handles - count number of open streams
 745  *
 746  * @rdev: radeon_device pointer
 747  * @sd: number of SD streams
 748  * @hd: number of HD streams
 749  *
 750  * Count the number of open SD/HD streams as a hint for power mangement
 751  */
 752 static void radeon_uvd_count_handles(struct radeon_device *rdev,
 753                                      unsigned *sd, unsigned *hd)
 754 {
 755         unsigned i;
 756
 757         *sd = 0;
 758         *hd = 0;
 759
 760         for (i = 0; i < RADEON_MAX_UVD_HANDLES; ++i) {
 761                 if (!atomic_read(&rdev->uvd.handles[i]))
 762                         continue;
 763
 764                 if (rdev->uvd.img_size[i] >= 720*576)
 765                         ++(*hd);
 766                 else
 767                         ++(*sd);
 768         }
 769 }
 770
 771 static void radeon_uvd_idle_work_handler(struct work_struct *work)
 772 {
 773         struct radeon_device *rdev =
 774                 container_of(work, struct radeon_device, uvd.idle_work.work);
 775
 776         if (radeon_fence_count_emitted(rdev, R600_RING_TYPE_UVD_INDEX) == 0) {
 777                 if ((rdev->pm.pm_method == PM_METHOD_DPM) && rdev->pm.dpm_enabled) {
 778                         radeon_dpm_enable_uvd(rdev, false);
 779                 } else {
 780                         radeon_set_uvd_clocks(rdev, 0, 0);
 781                 }
 782         } else {
 783                 schedule_delayed_work(&rdev->uvd.idle_work,
 784                                       msecs_to_jiffies(UVD_IDLE_TIMEOUT_MS));
 785         }
 786 }
 787
 788 void radeon_uvd_note_usage(struct radeon_device *rdev)
 789 {
 790         bool streams_changed = false;
 791         bool set_clocks = !cancel_delayed_work_sync(&rdev->uvd.idle_work);
 792         set_clocks &= schedule_delayed_work(&rdev->uvd.idle_work,
 793                                             msecs_to_jiffies(UVD_IDLE_TIMEOUT_MS));
 794
 795         if ((rdev->pm.pm_method == PM_METHOD_DPM) && rdev->pm.dpm_enabled) {
 796                 unsigned hd = 0, sd = 0;
 797                 radeon_uvd_count_handles(rdev, &sd, &hd);
 798                 if ((rdev->pm.dpm.sd != sd) ||
 799                     (rdev->pm.dpm.hd != hd)) {
 800                         rdev->pm.dpm.sd = sd;
 801                         rdev->pm.dpm.hd = hd;
 802                         streams_changed = true;
 803                 }
 804         }
 805
 806         if (set_clocks || streams_changed) {
 807                 if ((rdev->pm.pm_method == PM_METHOD_DPM) && rdev->pm.dpm_enabled) {
 808                         radeon_dpm_enable_uvd(rdev, true);
 809                 } else {
 810                         radeon_set_uvd_clocks(rdev, 53300, 40000);
 811                 }
 812         }
 813 }
 814
 815 static unsigned radeon_uvd_calc_upll_post_div(unsigned vco_freq,
 816                                               unsigned target_freq,
 817                                               unsigned pd_min,
 818                                               unsigned pd_even)
 819 {
 820         unsigned post_div = vco_freq / target_freq;
 821
 822         /* adjust to post divider minimum value */
 823         if (post_div < pd_min)
 824                 post_div = pd_min;
 825
 826         /* we alway need a frequency less than or equal the target */
 827         if ((vco_freq / post_div) > target_freq)
 828                 post_div += 1;
 829
 830         /* post dividers above a certain value must be even */
 831         if (post_div > pd_even && post_div % 2)
 832                 post_div += 1;
 833
 834         return post_div;
 835 }
 836
 837 /**
 838  * radeon_uvd_calc_upll_dividers - calc UPLL clock dividers
 839  *
 840  * @rdev: radeon_device pointer
 841  * @vclk: wanted VCLK
 842  * @dclk: wanted DCLK
 843  * @vco_min: minimum VCO frequency
 844  * @vco_max: maximum VCO frequency
 845  * @fb_factor: factor to multiply vco freq with
 846  * @fb_mask: limit and bitmask for feedback divider
 847  * @pd_min: post divider minimum
 848  * @pd_max: post divider maximum
 849  * @pd_even: post divider must be even above this value
 850  * @optimal_fb_div: resulting feedback divider
 851  * @optimal_vclk_div: resulting vclk post divider
 852  * @optimal_dclk_div: resulting dclk post divider
 853  *
 854  * Calculate dividers for UVDs UPLL (R6xx-SI, except APUs).
 855  * Returns zero on success -EINVAL on error.
 856  */
 857 int radeon_uvd_calc_upll_dividers(struct radeon_device *rdev,
 858                                   unsigned vclk, unsigned dclk,
 859                                   unsigned vco_min, unsigned vco_max,
 860                                   unsigned fb_factor, unsigned fb_mask,
 861                                   unsigned pd_min, unsigned pd_max,
 862                                   unsigned pd_even,
 863                                   unsigned *optimal_fb_div,
 864                                   unsigned *optimal_vclk_div,
 865                                   unsigned *optimal_dclk_div)
 866 {
 867         unsigned vco_freq, ref_freq = rdev->clock.spll.reference_freq;
 868
 869         /* start off with something large */
 870         unsigned optimal_score = ~0;
 871
 872         /* loop through vco from low to high */
 873         vco_min = max(max(vco_min, vclk), dclk);
 874         for (vco_freq = vco_min; vco_freq <= vco_max; vco_freq += 100) {
 875
 876                 uint64_t fb_div = (uint64_t)vco_freq * fb_factor;
 877                 unsigned vclk_div, dclk_div, score;
 878
 879                 do_div(fb_div, ref_freq);
 880
 881                 /* fb div out of range ? */
 882                 if (fb_div > fb_mask)
 883                         break; /* it can oly get worse */
 884
 885                 fb_div &= fb_mask;
 886
 887                 /* calc vclk divider with current vco freq */
 888                 vclk_div = radeon_uvd_calc_upll_post_div(vco_freq, vclk,
 889                                                          pd_min, pd_even);
 890                 if (vclk_div > pd_max)
 891                         break; /* vco is too big, it has to stop */
 892
 893                 /* calc dclk divider with current vco freq */
 894                 dclk_div = radeon_uvd_calc_upll_post_div(vco_freq, dclk,
 895                                                          pd_min, pd_even);
 896                 if (vclk_div > pd_max)
 897                         break; /* vco is too big, it has to stop */
 898
 899                 /* calc score with current vco freq */
 900                 score = vclk - (vco_freq / vclk_div) + dclk - (vco_freq / dclk_div);
 901
 902                 /* determine if this vco setting is better than current optimal settings */
 903                 if (score < optimal_score) {
 904                         *optimal_fb_div = fb_div;
 905                         *optimal_vclk_div = vclk_div;
 906                         *optimal_dclk_div = dclk_div;
 907                         optimal_score = score;
 908                         if (optimal_score == 0)
 909                                 break; /* it can't get better than this */
 910                 }
 911         }
 912
 913         /* did we found a valid setup ? */
 914         if (optimal_score == ~0)
 915                 return -EINVAL;
 916
 917         return 0;
 918 }
 919
 920 int radeon_uvd_send_upll_ctlreq(struct radeon_device *rdev,
 921                                 unsigned cg_upll_func_cntl)
 922 {
 923         unsigned i;
 924
 925         /* make sure UPLL_CTLREQ is deasserted */
 926         WREG32_P(cg_upll_func_cntl, 0, ~UPLL_CTLREQ_MASK);
 927
 928         mdelay(10);
 929
 930         /* assert UPLL_CTLREQ */
 931         WREG32_P(cg_upll_func_cntl, UPLL_CTLREQ_MASK, ~UPLL_CTLREQ_MASK);
 932
 933         /* wait for CTLACK and CTLACK2 to get asserted */
 934         for (i = 0; i < 100; ++i) {
 935                 uint32_t mask = UPLL_CTLACK_MASK | UPLL_CTLACK2_MASK;
 936                 if ((RREG32(cg_upll_func_cntl) & mask) == mask)
 937                         break;
 938                 mdelay(10);
 939         }
 940
 941         /* deassert UPLL_CTLREQ */
 942         WREG32_P(cg_upll_func_cntl, 0, ~UPLL_CTLREQ_MASK);
 943
 944         if (i == 100) {
 945                 DRM_ERROR("Timeout setting UVD clocks!\n");
 946                 return -ETIMEDOUT;
 947         }
 948
 949         return 0;
 950 }