LXR linux/drivers/gpu/drm/radeon/uvd_v1

   1/*
   2 * Copyright 2013 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 * Authors: Christian König <christian.koenig@amd.com>
  23 */
  24
  25#include <linux/firmware.h>
  26
  27#include "radeon.h"
  28#include "radeon_asic.h"
  29#include "r600d.h"
  30
  31/**
  32 * uvd_v1_0_get_rptr - get read pointer
  33 *
  34 * @rdev: radeon_device pointer
  35 * @ring: radeon_ring pointer
  36 *
  37 * Returns the current hardware read pointer
  38 */
  39uint32_t uvd_v1_0_get_rptr(struct radeon_device *rdev,
  40                           struct radeon_ring *ring)
  41{
  42        return RREG32(UVD_RBC_RB_RPTR);
  43}
  44
  45/**
  46 * uvd_v1_0_get_wptr - get write pointer
  47 *
  48 * @rdev: radeon_device pointer
  49 * @ring: radeon_ring pointer
  50 *
  51 * Returns the current hardware write pointer
  52 */
  53uint32_t uvd_v1_0_get_wptr(struct radeon_device *rdev,
  54                           struct radeon_ring *ring)
  55{
  56        return RREG32(UVD_RBC_RB_WPTR);
  57}
  58
  59/**
  60 * uvd_v1_0_set_wptr - set write pointer
  61 *
  62 * @rdev: radeon_device pointer
  63 * @ring: radeon_ring pointer
  64 *
  65 * Commits the write pointer to the hardware
  66 */
  67void uvd_v1_0_set_wptr(struct radeon_device *rdev,
  68                       struct radeon_ring *ring)
  69{
  70        WREG32(UVD_RBC_RB_WPTR, ring->wptr);
  71}
  72
  73/**
  74 * uvd_v1_0_fence_emit - emit an fence & trap command
  75 *
  76 * @rdev: radeon_device pointer
  77 * @fence: fence to emit
  78 *
  79 * Write a fence and a trap command to the ring.
  80 */
  81void uvd_v1_0_fence_emit(struct radeon_device *rdev,
  82                         struct radeon_fence *fence)
  83{
  84        struct radeon_ring *ring = &rdev->ring[fence->ring];
  85        uint64_t addr = rdev->fence_drv[fence->ring].gpu_addr;
  86
  87        radeon_ring_write(ring, PACKET0(UVD_GPCOM_VCPU_DATA0, 0));
  88        radeon_ring_write(ring, addr & 0xffffffff);
  89        radeon_ring_write(ring, PACKET0(UVD_GPCOM_VCPU_DATA1, 0));
  90        radeon_ring_write(ring, fence->seq);
  91        radeon_ring_write(ring, PACKET0(UVD_GPCOM_VCPU_CMD, 0));
  92        radeon_ring_write(ring, 0);
  93
  94        radeon_ring_write(ring, PACKET0(UVD_GPCOM_VCPU_DATA0, 0));
  95        radeon_ring_write(ring, 0);
  96        radeon_ring_write(ring, PACKET0(UVD_GPCOM_VCPU_DATA1, 0));
  97        radeon_ring_write(ring, 0);
  98        radeon_ring_write(ring, PACKET0(UVD_GPCOM_VCPU_CMD, 0));
  99        radeon_ring_write(ring, 2);
 100        return;
 101}
 102
 103/**
 104 * uvd_v1_0_resume - memory controller programming
 105 *
 106 * @rdev: radeon_device pointer
 107 *
 108 * Let the UVD memory controller know it's offsets
 109 */
 110int uvd_v1_0_resume(struct radeon_device *rdev)
 111{
 112        uint64_t addr;
 113        uint32_t size;
 114        int r;
 115
 116        r = radeon_uvd_resume(rdev);
 117        if (r)
 118                return r;
 119
 120        /* programm the VCPU memory controller bits 0-27 */
 121        addr = (rdev->uvd.gpu_addr >> 3) + 16;
 122        size = RADEON_GPU_PAGE_ALIGN(rdev->uvd_fw->size) >> 3;
 123        WREG32(UVD_VCPU_CACHE_OFFSET0, addr);
 124        WREG32(UVD_VCPU_CACHE_SIZE0, size);
 125
 126        addr += size;
 127        size = RADEON_UVD_HEAP_SIZE >> 3;
 128        WREG32(UVD_VCPU_CACHE_OFFSET1, addr);
 129        WREG32(UVD_VCPU_CACHE_SIZE1, size);
 130
 131        addr += size;
 132        size = (RADEON_UVD_STACK_SIZE +
 133               (RADEON_UVD_SESSION_SIZE * rdev->uvd.max_handles)) >> 3;
 134        WREG32(UVD_VCPU_CACHE_OFFSET2, addr);
 135        WREG32(UVD_VCPU_CACHE_SIZE2, size);
 136
 137        /* bits 28-31 */
 138        addr = (rdev->uvd.gpu_addr >> 28) & 0xF;
 139        WREG32(UVD_LMI_ADDR_EXT, (addr << 12) | (addr << 0));
 140
 141        /* bits 32-39 */
 142        addr = (rdev->uvd.gpu_addr >> 32) & 0xFF;
 143        WREG32(UVD_LMI_EXT40_ADDR, addr | (0x9 << 16) | (0x1 << 31));
 144
 145        WREG32(UVD_FW_START, *((uint32_t*)rdev->uvd.cpu_addr));
 146
 147        return 0;
 148}
 149
 150/**
 151 * uvd_v1_0_init - start and test UVD block
 152 *
 153 * @rdev: radeon_device pointer
 154 *
 155 * Initialize the hardware, boot up the VCPU and do some testing
 156 */
 157int uvd_v1_0_init(struct radeon_device *rdev)
 158{
 159        struct radeon_ring *ring = &rdev->ring[R600_RING_TYPE_UVD_INDEX];
 160        uint32_t tmp;
 161        int r;
 162
 163        /* raise clocks while booting up the VCPU */
 164        if (rdev->family < CHIP_RV740)
 165                radeon_set_uvd_clocks(rdev, 10000, 10000);
 166        else
 167                radeon_set_uvd_clocks(rdev, 53300, 40000);
 168
 169        r = uvd_v1_0_start(rdev);
 170        if (r)
 171                goto done;
 172
 173        ring->ready = true;
 174        r = radeon_ring_test(rdev, R600_RING_TYPE_UVD_INDEX, ring);
 175        if (r) {
 176                ring->ready = false;
 177                goto done;
 178        }
 179
 180        r = radeon_ring_lock(rdev, ring, 10);
 181        if (r) {
 182                DRM_ERROR("radeon: ring failed to lock UVD ring (%d).\n", r);
 183                goto done;
 184        }
 185
 186        tmp = PACKET0(UVD_SEMA_WAIT_FAULT_TIMEOUT_CNTL, 0);
 187        radeon_ring_write(ring, tmp);
 188        radeon_ring_write(ring, 0xFFFFF);
 189
 190        tmp = PACKET0(UVD_SEMA_WAIT_INCOMPLETE_TIMEOUT_CNTL, 0);
 191        radeon_ring_write(ring, tmp);
 192        radeon_ring_write(ring, 0xFFFFF);
 193
 194        tmp = PACKET0(UVD_SEMA_SIGNAL_INCOMPLETE_TIMEOUT_CNTL, 0);
 195        radeon_ring_write(ring, tmp);
 196        radeon_ring_write(ring, 0xFFFFF);
 197
 198        /* Clear timeout status bits */
 199        radeon_ring_write(ring, PACKET0(UVD_SEMA_TIMEOUT_STATUS, 0));
 200        radeon_ring_write(ring, 0x8);
 201
 202        radeon_ring_write(ring, PACKET0(UVD_SEMA_CNTL, 0));
 203        radeon_ring_write(ring, 3);
 204
 205        radeon_ring_unlock_commit(rdev, ring, false);
 206
 207done:
 208        /* lower clocks again */
 209        radeon_set_uvd_clocks(rdev, 0, 0);
 210
 211        if (!r) {
 212                switch (rdev->family) {
 213                case CHIP_RV610:
 214                case CHIP_RV630:
 215                case CHIP_RV620:
 216                        /* 64byte granularity workaround */
 217                        WREG32(MC_CONFIG, 0);
 218                        WREG32(MC_CONFIG, 1 << 4);
 219                        WREG32(RS_DQ_RD_RET_CONF, 0x3f);
 220                        WREG32(MC_CONFIG, 0x1f);
 221
 222                        /* fall through */
 223                case CHIP_RV670:
 224                case CHIP_RV635:
 225
 226                        /* write clean workaround */
 227                        WREG32_P(UVD_VCPU_CNTL, 0x10, ~0x10);
 228                        break;
 229
 230                default:
 231                        /* TODO: Do we need more? */
 232                        break;
 233                }
 234
 235                DRM_INFO("UVD initialized successfully.\n");
 236        }
 237
 238        return r;
 239}
 240
 241/**
 242 * uvd_v1_0_fini - stop the hardware block
 243 *
 244 * @rdev: radeon_device pointer
 245 *
 246 * Stop the UVD block, mark ring as not ready any more
 247 */
 248void uvd_v1_0_fini(struct radeon_device *rdev)
 249{
 250        struct radeon_ring *ring = &rdev->ring[R600_RING_TYPE_UVD_INDEX];
 251
 252        uvd_v1_0_stop(rdev);
 253        ring->ready = false;
 254}
 255
 256/**
 257 * uvd_v1_0_start - start UVD block
 258 *
 259 * @rdev: radeon_device pointer
 260 *
 261 * Setup and start the UVD block
 262 */
 263int uvd_v1_0_start(struct radeon_device *rdev)
 264{
 265        struct radeon_ring *ring = &rdev->ring[R600_RING_TYPE_UVD_INDEX];
 266        uint32_t rb_bufsz;
 267        int i, j, r;
 268
 269        /* disable byte swapping */
 270        u32 lmi_swap_cntl = 0;
 271        u32 mp_swap_cntl = 0;
 272
 273        /* disable clock gating */
 274        WREG32(UVD_CGC_GATE, 0);
 275
 276        /* disable interupt */
 277        WREG32_P(UVD_MASTINT_EN, 0, ~(1 << 1));
 278
 279        /* Stall UMC and register bus before resetting VCPU */
 280        WREG32_P(UVD_LMI_CTRL2, 1 << 8, ~(1 << 8));
 281        WREG32_P(UVD_RB_ARB_CTRL, 1 << 3, ~(1 << 3));
 282        mdelay(1);
 283
 284        /* put LMI, VCPU, RBC etc... into reset */
 285        WREG32(UVD_SOFT_RESET, LMI_SOFT_RESET | VCPU_SOFT_RESET |
 286               LBSI_SOFT_RESET | RBC_SOFT_RESET | CSM_SOFT_RESET |
 287               CXW_SOFT_RESET | TAP_SOFT_RESET | LMI_UMC_SOFT_RESET);
 288        mdelay(5);
 289
 290        /* take UVD block out of reset */
 291        WREG32_P(SRBM_SOFT_RESET, 0, ~SOFT_RESET_UVD);
 292        mdelay(5);
 293
 294        /* initialize UVD memory controller */
 295        WREG32(UVD_LMI_CTRL, 0x40 | (1 << 8) | (1 << 13) |
 296                             (1 << 21) | (1 << 9) | (1 << 20));
 297
 298#ifdef __BIG_ENDIAN
 299        /* swap (8 in 32) RB and IB */
 300        lmi_swap_cntl = 0xa;
 301        mp_swap_cntl = 0;
 302#endif
 303        WREG32(UVD_LMI_SWAP_CNTL, lmi_swap_cntl);
 304        WREG32(UVD_MP_SWAP_CNTL, mp_swap_cntl);
 305
 306        WREG32(UVD_MPC_SET_MUXA0, 0x40c2040);
 307        WREG32(UVD_MPC_SET_MUXA1, 0x0);
 308        WREG32(UVD_MPC_SET_MUXB0, 0x40c2040);
 309        WREG32(UVD_MPC_SET_MUXB1, 0x0);
 310        WREG32(UVD_MPC_SET_ALU, 0);
 311        WREG32(UVD_MPC_SET_MUX, 0x88);
 312
 313        /* take all subblocks out of reset, except VCPU */
 314        WREG32(UVD_SOFT_RESET, VCPU_SOFT_RESET);
 315        mdelay(5);
 316
 317        /* enable VCPU clock */
 318        WREG32(UVD_VCPU_CNTL,  1 << 9);
 319
 320        /* enable UMC */
 321        WREG32_P(UVD_LMI_CTRL2, 0, ~(1 << 8));
 322
 323        WREG32_P(UVD_RB_ARB_CTRL, 0, ~(1 << 3));
 324
 325        /* boot up the VCPU */
 326        WREG32(UVD_SOFT_RESET, 0);
 327        mdelay(10);
 328
 329        for (i = 0; i < 10; ++i) {
 330                uint32_t status;
 331                for (j = 0; j < 100; ++j) {
 332                        status = RREG32(UVD_STATUS);
 333                        if (status & 2)
 334                                break;
 335                        mdelay(10);
 336                }
 337                r = 0;
 338                if (status & 2)
 339                        break;
 340
 341                DRM_ERROR("UVD not responding, trying to reset the VCPU!!!\n");
 342                WREG32_P(UVD_SOFT_RESET, VCPU_SOFT_RESET, ~VCPU_SOFT_RESET);
 343                mdelay(10);
 344                WREG32_P(UVD_SOFT_RESET, 0, ~VCPU_SOFT_RESET);
 345                mdelay(10);
 346                r = -1;
 347        }
 348
 349        if (r) {
 350                DRM_ERROR("UVD not responding, giving up!!!\n");
 351                return r;
 352        }
 353
 354        /* enable interupt */
 355        WREG32_P(UVD_MASTINT_EN, 3<<1, ~(3 << 1));
 356
 357        /* force RBC into idle state */
 358        WREG32(UVD_RBC_RB_CNTL, 0x11010101);
 359
 360        /* Set the write pointer delay */
 361        WREG32(UVD_RBC_RB_WPTR_CNTL, 0);
 362
 363        /* programm the 4GB memory segment for rptr and ring buffer */
 364        WREG32(UVD_LMI_EXT40_ADDR, upper_32_bits(ring->gpu_addr) |
 365                                   (0x7 << 16) | (0x1 << 31));
 366
 367        /* Initialize the ring buffer's read and write pointers */
 368        WREG32(UVD_RBC_RB_RPTR, 0x0);
 369
 370        ring->wptr = RREG32(UVD_RBC_RB_RPTR);
 371        WREG32(UVD_RBC_RB_WPTR, ring->wptr);
 372
 373        /* set the ring address */
 374        WREG32(UVD_RBC_RB_BASE, ring->gpu_addr);
 375
 376        /* Set ring buffer size */
 377        rb_bufsz = order_base_2(ring->ring_size);
 378        rb_bufsz = (0x1 << 8) | rb_bufsz;
 379        WREG32_P(UVD_RBC_RB_CNTL, rb_bufsz, ~0x11f1f);
 380
 381        return 0;
 382}
 383
 384/**
 385 * uvd_v1_0_stop - stop UVD block
 386 *
 387 * @rdev: radeon_device pointer
 388 *
 389 * stop the UVD block
 390 */
 391void uvd_v1_0_stop(struct radeon_device *rdev)
 392{
 393        /* force RBC into idle state */
 394        WREG32(UVD_RBC_RB_CNTL, 0x11010101);
 395
 396        /* Stall UMC and register bus before resetting VCPU */
 397        WREG32_P(UVD_LMI_CTRL2, 1 << 8, ~(1 << 8));
 398        WREG32_P(UVD_RB_ARB_CTRL, 1 << 3, ~(1 << 3));
 399        mdelay(1);
 400
 401        /* put VCPU into reset */
 402        WREG32(UVD_SOFT_RESET, VCPU_SOFT_RESET);
 403        mdelay(5);
 404
 405        /* disable VCPU clock */
 406        WREG32(UVD_VCPU_CNTL, 0x0);
 407
 408        /* Unstall UMC and register bus */
 409        WREG32_P(UVD_LMI_CTRL2, 0, ~(1 << 8));
 410        WREG32_P(UVD_RB_ARB_CTRL, 0, ~(1 << 3));
 411}
 412
 413/**
 414 * uvd_v1_0_ring_test - register write test
 415 *
 416 * @rdev: radeon_device pointer
 417 * @ring: radeon_ring pointer
 418 *
 419 * Test if we can successfully write to the context register
 420 */
 421int uvd_v1_0_ring_test(struct radeon_device *rdev, struct radeon_ring *ring)
 422{
 423        uint32_t tmp = 0;
 424        unsigned i;
 425        int r;
 426
 427        WREG32(UVD_CONTEXT_ID, 0xCAFEDEAD);
 428        r = radeon_ring_lock(rdev, ring, 3);
 429        if (r) {
 430                DRM_ERROR("radeon: cp failed to lock ring %d (%d).\n",
 431                          ring->idx, r);
 432                return r;
 433        }
 434        radeon_ring_write(ring, PACKET0(UVD_CONTEXT_ID, 0));
 435        radeon_ring_write(ring, 0xDEADBEEF);
 436        radeon_ring_unlock_commit(rdev, ring, false);
 437        for (i = 0; i < rdev->usec_timeout; i++) {
 438                tmp = RREG32(UVD_CONTEXT_ID);
 439                if (tmp == 0xDEADBEEF)
 440                        break;
 441                udelay(1);
 442        }
 443
 444        if (i < rdev->usec_timeout) {
 445                DRM_INFO("ring test on %d succeeded in %d usecs\n",
 446                         ring->idx, i);
 447        } else {
 448                DRM_ERROR("radeon: ring %d test failed (0x%08X)\n",
 449                          ring->idx, tmp);
 450                r = -EINVAL;
 451        }
 452        return r;
 453}
 454
 455/**
 456 * uvd_v1_0_semaphore_emit - emit semaphore command
 457 *
 458 * @rdev: radeon_device pointer
 459 * @ring: radeon_ring pointer
 460 * @semaphore: semaphore to emit commands for
 461 * @emit_wait: true if we should emit a wait command
 462 *
 463 * Emit a semaphore command (either wait or signal) to the UVD ring.
 464 */
 465bool uvd_v1_0_semaphore_emit(struct radeon_device *rdev,
 466                             struct radeon_ring *ring,
 467                             struct radeon_semaphore *semaphore,
 468                             bool emit_wait)
 469{
 470        /* disable semaphores for UVD V1 hardware */
 471        return false;
 472}
 473
 474/**
 475 * uvd_v1_0_ib_execute - execute indirect buffer
 476 *
 477 * @rdev: radeon_device pointer
 478 * @ib: indirect buffer to execute
 479 *
 480 * Write ring commands to execute the indirect buffer
 481 */
 482void uvd_v1_0_ib_execute(struct radeon_device *rdev, struct radeon_ib *ib)
 483{
 484        struct radeon_ring *ring = &rdev->ring[ib->ring];
 485
 486        radeon_ring_write(ring, PACKET0(UVD_RBC_IB_BASE, 0));
 487        radeon_ring_write(ring, ib->gpu_addr);
 488        radeon_ring_write(ring, PACKET0(UVD_RBC_IB_SIZE, 0));
 489        radeon_ring_write(ring, ib->length_dw);
 490}
 491
 492/**
 493 * uvd_v1_0_ib_test - test ib execution
 494 *
 495 * @rdev: radeon_device pointer
 496 * @ring: radeon_ring pointer
 497 *
 498 * Test if we can successfully execute an IB
 499 */
 500int uvd_v1_0_ib_test(struct radeon_device *rdev, struct radeon_ring *ring)
 501{
 502        struct radeon_fence *fence = NULL;
 503        int r;
 504
 505        if (rdev->family < CHIP_RV740)
 506                r = radeon_set_uvd_clocks(rdev, 10000, 10000);
 507        else
 508                r = radeon_set_uvd_clocks(rdev, 53300, 40000);
 509        if (r) {
 510                DRM_ERROR("radeon: failed to raise UVD clocks (%d).\n", r);
 511                return r;
 512        }
 513
 514        r = radeon_uvd_get_create_msg(rdev, ring->idx, 1, NULL);
 515        if (r) {
 516                DRM_ERROR("radeon: failed to get create msg (%d).\n", r);
 517                goto error;
 518        }
 519
 520        r = radeon_uvd_get_destroy_msg(rdev, ring->idx, 1, &fence);
 521        if (r) {
 522                DRM_ERROR("radeon: failed to get destroy ib (%d).\n", r);
 523                goto error;
 524        }
 525
 526        r = radeon_fence_wait_timeout(fence, false, usecs_to_jiffies(
 527                RADEON_USEC_IB_TEST_TIMEOUT));
 528        if (r < 0) {
 529                DRM_ERROR("radeon: fence wait failed (%d).\n", r);
 530                goto error;
 531        } else if (r == 0) {
 532                DRM_ERROR("radeon: fence wait timed out.\n");
 533                r = -ETIMEDOUT;
 534                goto error;
 535        }
 536        r = 0;
 537        DRM_INFO("ib test on ring %d succeeded\n",  ring->idx);
 538error:
 539        radeon_fence_unref(&fence);
 540        radeon_set_uvd_clocks(rdev, 0, 0);
 541        return r;
 542}
 543