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

   1 /*
   2  * Copyright 2014 Advanced Micro Devices, Inc.
   3  * Copyright 2008 Red Hat Inc.
   4  * Copyright 2009 Jerome Glisse.
   5  *
   6  * Permission is hereby granted, free of charge, to any person obtaining a
   7  * copy of this software and associated documentation files (the "Software"),
   8  * to deal in the Software without restriction, including without limitation
   9  * the rights to use, copy, modify, merge, publish, distribute, sublicense,
  10  * and/or sell copies of the Software, and to permit persons to whom the
  11  * Software is furnished to do so, subject to the following conditions:
  12  *
  13  * The above copyright notice and this permission notice shall be included in
  14  * all copies or substantial portions of the Software.
  15  *
  16  * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
  17  * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
  18  * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.  IN NO EVENT SHALL
  19  * THE COPYRIGHT HOLDER(S) OR AUTHOR(S) BE LIABLE FOR ANY CLAIM, DAMAGES OR
  20  * OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE,
  21  * ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
  22  * OTHER DEALINGS IN THE SOFTWARE.
  23  *
  24  */
  25
  26 #include "amdgpu.h"
  27 #include "amdgpu_gfx.h"
  28 #include "amdgpu_rlc.h"
  29 #include "amdgpu_ras.h"
  30
  31 /* delay 0.1 second to enable gfx off feature */
  32 #define GFX_OFF_DELAY_ENABLE         msecs_to_jiffies(100)
  33
  34 /*
  35  * GPU GFX IP block helpers function.
  36  */
  37
  38 int amdgpu_gfx_mec_queue_to_bit(struct amdgpu_device *adev, int mec,
  39                                 int pipe, int queue)
  40 {
  41         int bit = 0;
  42
  43         bit += mec * adev->gfx.mec.num_pipe_per_mec
  44                 * adev->gfx.mec.num_queue_per_pipe;
  45         bit += pipe * adev->gfx.mec.num_queue_per_pipe;
  46         bit += queue;
  47
  48         return bit;
  49 }
  50
  51 void amdgpu_queue_mask_bit_to_mec_queue(struct amdgpu_device *adev, int bit,
  52                                  int *mec, int *pipe, int *queue)
  53 {
  54         *queue = bit % adev->gfx.mec.num_queue_per_pipe;
  55         *pipe = (bit / adev->gfx.mec.num_queue_per_pipe)
  56                 % adev->gfx.mec.num_pipe_per_mec;
  57         *mec = (bit / adev->gfx.mec.num_queue_per_pipe)
  58                / adev->gfx.mec.num_pipe_per_mec;
  59
  60 }
  61
  62 bool amdgpu_gfx_is_mec_queue_enabled(struct amdgpu_device *adev,
  63                                      int mec, int pipe, int queue)
  64 {
  65         return test_bit(amdgpu_gfx_mec_queue_to_bit(adev, mec, pipe, queue),
  66                         adev->gfx.mec.queue_bitmap);
  67 }
  68
  69 int amdgpu_gfx_me_queue_to_bit(struct amdgpu_device *adev,
  70                                int me, int pipe, int queue)
  71 {
  72         int bit = 0;
  73
  74         bit += me * adev->gfx.me.num_pipe_per_me
  75                 * adev->gfx.me.num_queue_per_pipe;
  76         bit += pipe * adev->gfx.me.num_queue_per_pipe;
  77         bit += queue;
  78
  79         return bit;
  80 }
  81
  82 void amdgpu_gfx_bit_to_me_queue(struct amdgpu_device *adev, int bit,
  83                                 int *me, int *pipe, int *queue)
  84 {
  85         *queue = bit % adev->gfx.me.num_queue_per_pipe;
  86         *pipe = (bit / adev->gfx.me.num_queue_per_pipe)
  87                 % adev->gfx.me.num_pipe_per_me;
  88         *me = (bit / adev->gfx.me.num_queue_per_pipe)
  89                 / adev->gfx.me.num_pipe_per_me;
  90 }
  91
  92 bool amdgpu_gfx_is_me_queue_enabled(struct amdgpu_device *adev,
  93                                     int me, int pipe, int queue)
  94 {
  95         return test_bit(amdgpu_gfx_me_queue_to_bit(adev, me, pipe, queue),
  96                         adev->gfx.me.queue_bitmap);
  97 }
  98
  99 /**
 100  * amdgpu_gfx_scratch_get - Allocate a scratch register
 101  *
 102  * @adev: amdgpu_device pointer
 103  * @reg: scratch register mmio offset
 104  *
 105  * Allocate a CP scratch register for use by the driver (all asics).
 106  * Returns 0 on success or -EINVAL on failure.
 107  */
 108 int amdgpu_gfx_scratch_get(struct amdgpu_device *adev, uint32_t *reg)
 109 {
 110         int i;
 111
 112         i = ffs(adev->gfx.scratch.free_mask);
 113         if (i != 0 && i <= adev->gfx.scratch.num_reg) {
 114                 i--;
 115                 adev->gfx.scratch.free_mask &= ~(1u << i);
 116                 *reg = adev->gfx.scratch.reg_base + i;
 117                 return 0;
 118         }
 119         return -EINVAL;
 120 }
 121
 122 /**
 123  * amdgpu_gfx_scratch_free - Free a scratch register
 124  *
 125  * @adev: amdgpu_device pointer
 126  * @reg: scratch register mmio offset
 127  *
 128  * Free a CP scratch register allocated for use by the driver (all asics)
 129  */
 130 void amdgpu_gfx_scratch_free(struct amdgpu_device *adev, uint32_t reg)
 131 {
 132         adev->gfx.scratch.free_mask |= 1u << (reg - adev->gfx.scratch.reg_base);
 133 }
 134
 135 /**
 136  * amdgpu_gfx_parse_disable_cu - Parse the disable_cu module parameter
 137  *
 138  * @mask: array in which the per-shader array disable masks will be stored
 139  * @max_se: number of SEs
 140  * @max_sh: number of SHs
 141  *
 142  * The bitmask of CUs to be disabled in the shader array determined by se and
 143  * sh is stored in mask[se * max_sh + sh].
 144  */
 145 void amdgpu_gfx_parse_disable_cu(unsigned *mask, unsigned max_se, unsigned max_sh)
 146 {
 147         unsigned se, sh, cu;
 148         const char *p;
 149
 150         memset(mask, 0, sizeof(*mask) * max_se * max_sh);
 151
 152         if (!amdgpu_disable_cu || !*amdgpu_disable_cu)
 153                 return;
 154
 155         p = amdgpu_disable_cu;
 156         for (;;) {
 157                 char *next;
 158                 int ret = sscanf(p, "%u.%u.%u", &se, &sh, &cu);
 159                 if (ret < 3) {
 160                         DRM_ERROR("amdgpu: could not parse disable_cu\n");
 161                         return;
 162                 }
 163
 164                 if (se < max_se && sh < max_sh && cu < 16) {
 165                         DRM_INFO("amdgpu: disabling CU %u.%u.%u\n", se, sh, cu);
 166                         mask[se * max_sh + sh] |= 1u << cu;
 167                 } else {
 168                         DRM_ERROR("amdgpu: disable_cu %u.%u.%u is out of range\n",
 169                                   se, sh, cu);
 170                 }
 171
 172                 next = strchr(p, ',');
 173                 if (!next)
 174                         break;
 175                 p = next + 1;
 176         }
 177 }
 178
 179 static bool amdgpu_gfx_is_multipipe_capable(struct amdgpu_device *adev)
 180 {
 181         if (amdgpu_compute_multipipe != -1) {
 182                 DRM_INFO("amdgpu: forcing compute pipe policy %d\n",
 183                          amdgpu_compute_multipipe);
 184                 return amdgpu_compute_multipipe == 1;
 185         }
 186
 187         /* FIXME: spreading the queues across pipes causes perf regressions
 188          * on POLARIS11 compute workloads */
 189         if (adev->asic_type == CHIP_POLARIS11)
 190                 return false;
 191
 192         return adev->gfx.mec.num_mec > 1;
 193 }
 194
 195 bool amdgpu_gfx_is_high_priority_compute_queue(struct amdgpu_device *adev,
 196                                                int pipe, int queue)
 197 {
 198         bool multipipe_policy = amdgpu_gfx_is_multipipe_capable(adev);
 199         int cond;
 200         /* Policy: alternate between normal and high priority */
 201         cond = multipipe_policy ? pipe : queue;
 202
 203         return ((cond % 2) != 0);
 204
 205 }
 206
 207 void amdgpu_gfx_compute_queue_acquire(struct amdgpu_device *adev)
 208 {
 209         int i, queue, pipe;
 210         bool multipipe_policy = amdgpu_gfx_is_multipipe_capable(adev);
 211         int max_queues_per_mec = min(adev->gfx.mec.num_pipe_per_mec *
 212                                      adev->gfx.mec.num_queue_per_pipe,
 213                                      adev->gfx.num_compute_rings);
 214
 215         if (multipipe_policy) {
 216                 /* policy: make queues evenly cross all pipes on MEC1 only */
 217                 for (i = 0; i < max_queues_per_mec; i++) {
 218                         pipe = i % adev->gfx.mec.num_pipe_per_mec;
 219                         queue = (i / adev->gfx.mec.num_pipe_per_mec) %
 220                                 adev->gfx.mec.num_queue_per_pipe;
 221
 222                         set_bit(pipe * adev->gfx.mec.num_queue_per_pipe + queue,
 223                                         adev->gfx.mec.queue_bitmap);
 224                 }
 225         } else {
 226                 /* policy: amdgpu owns all queues in the given pipe */
 227                 for (i = 0; i < max_queues_per_mec; ++i)
 228                         set_bit(i, adev->gfx.mec.queue_bitmap);
 229         }
 230
 231         dev_dbg(adev->dev, "mec queue bitmap weight=%d\n", bitmap_weight(adev->gfx.mec.queue_bitmap, AMDGPU_MAX_COMPUTE_QUEUES));
 232 }
 233
 234 void amdgpu_gfx_graphics_queue_acquire(struct amdgpu_device *adev)
 235 {
 236         int i, queue, me;
 237
 238         for (i = 0; i < AMDGPU_MAX_GFX_QUEUES; ++i) {
 239                 queue = i % adev->gfx.me.num_queue_per_pipe;
 240                 me = (i / adev->gfx.me.num_queue_per_pipe)
 241                       / adev->gfx.me.num_pipe_per_me;
 242
 243                 if (me >= adev->gfx.me.num_me)
 244                         break;
 245                 /* policy: amdgpu owns the first queue per pipe at this stage
 246                  * will extend to mulitple queues per pipe later */
 247                 if (me == 0 && queue < 1)
 248                         set_bit(i, adev->gfx.me.queue_bitmap);
 249         }
 250
 251         /* update the number of active graphics rings */
 252         adev->gfx.num_gfx_rings =
 253                 bitmap_weight(adev->gfx.me.queue_bitmap, AMDGPU_MAX_GFX_QUEUES);
 254 }
 255
 256 static int amdgpu_gfx_kiq_acquire(struct amdgpu_device *adev,
 257                                   struct amdgpu_ring *ring)
 258 {
 259         int queue_bit;
 260         int mec, pipe, queue;
 261
 262         queue_bit = adev->gfx.mec.num_mec
 263                     * adev->gfx.mec.num_pipe_per_mec
 264                     * adev->gfx.mec.num_queue_per_pipe;
 265
 266         while (queue_bit-- >= 0) {
 267                 if (test_bit(queue_bit, adev->gfx.mec.queue_bitmap))
 268                         continue;
 269
 270                 amdgpu_queue_mask_bit_to_mec_queue(adev, queue_bit, &mec, &pipe, &queue);
 271
 272                 /*
 273                  * 1. Using pipes 2/3 from MEC 2 seems cause problems.
 274                  * 2. It must use queue id 0, because CGPG_IDLE/SAVE/LOAD/RUN
 275                  * only can be issued on queue 0.
 276                  */
 277                 if ((mec == 1 && pipe > 1) || queue != 0)
 278                         continue;
 279
 280                 ring->me = mec + 1;
 281                 ring->pipe = pipe;
 282                 ring->queue = queue;
 283
 284                 return 0;
 285         }
 286
 287         dev_err(adev->dev, "Failed to find a queue for KIQ\n");
 288         return -EINVAL;
 289 }
 290
 291 int amdgpu_gfx_kiq_init_ring(struct amdgpu_device *adev,
 292                              struct amdgpu_ring *ring,
 293                              struct amdgpu_irq_src *irq)
 294 {
 295         struct amdgpu_kiq *kiq = &adev->gfx.kiq;
 296         int r = 0;
 297
 298         spin_lock_init(&kiq->ring_lock);
 299
 300         ring->adev = NULL;
 301         ring->ring_obj = NULL;
 302         ring->use_doorbell = true;
 303         ring->doorbell_index = adev->doorbell_index.kiq;
 304
 305         r = amdgpu_gfx_kiq_acquire(adev, ring);
 306         if (r)
 307                 return r;
 308
 309         ring->eop_gpu_addr = kiq->eop_gpu_addr;
 310         ring->no_scheduler = true;
 311         sprintf(ring->name, "kiq_%d.%d.%d", ring->me, ring->pipe, ring->queue);
 312         r = amdgpu_ring_init(adev, ring, 1024,
 313                              irq, AMDGPU_CP_KIQ_IRQ_DRIVER0,
 314                              AMDGPU_RING_PRIO_DEFAULT);
 315         if (r)
 316                 dev_warn(adev->dev, "(%d) failed to init kiq ring\n", r);
 317
 318         return r;
 319 }
 320
 321 void amdgpu_gfx_kiq_free_ring(struct amdgpu_ring *ring)
 322 {
 323         amdgpu_ring_fini(ring);
 324 }
 325
 326 void amdgpu_gfx_kiq_fini(struct amdgpu_device *adev)
 327 {
 328         struct amdgpu_kiq *kiq = &adev->gfx.kiq;
 329
 330         amdgpu_bo_free_kernel(&kiq->eop_obj, &kiq->eop_gpu_addr, NULL);
 331 }
 332
 333 int amdgpu_gfx_kiq_init(struct amdgpu_device *adev,
 334                         unsigned hpd_size)
 335 {
 336         int r;
 337         u32 *hpd;
 338         struct amdgpu_kiq *kiq = &adev->gfx.kiq;
 339
 340         r = amdgpu_bo_create_kernel(adev, hpd_size, PAGE_SIZE,
 341                                     AMDGPU_GEM_DOMAIN_GTT, &kiq->eop_obj,
 342                                     &kiq->eop_gpu_addr, (void **)&hpd);
 343         if (r) {
 344                 dev_warn(adev->dev, "failed to create KIQ bo (%d).\n", r);
 345                 return r;
 346         }
 347
 348         memset(hpd, 0, hpd_size);
 349
 350         r = amdgpu_bo_reserve(kiq->eop_obj, true);
 351         if (unlikely(r != 0))
 352                 dev_warn(adev->dev, "(%d) reserve kiq eop bo failed\n", r);
 353         amdgpu_bo_kunmap(kiq->eop_obj);
 354         amdgpu_bo_unreserve(kiq->eop_obj);
 355
 356         return 0;
 357 }
 358
 359 /* create MQD for each compute/gfx queue */
 360 int amdgpu_gfx_mqd_sw_init(struct amdgpu_device *adev,
 361                            unsigned mqd_size)
 362 {
 363         struct amdgpu_ring *ring = NULL;
 364         int r, i;
 365
 366         /* create MQD for KIQ */
 367         ring = &adev->gfx.kiq.ring;
 368         if (!ring->mqd_obj) {
 369                 /* originaly the KIQ MQD is put in GTT domain, but for SRIOV VRAM domain is a must
 370                  * otherwise hypervisor trigger SAVE_VF fail after driver unloaded which mean MQD
 371                  * deallocated and gart_unbind, to strict diverage we decide to use VRAM domain for
 372                  * KIQ MQD no matter SRIOV or Bare-metal
 373                  */
 374                 r = amdgpu_bo_create_kernel(adev, mqd_size, PAGE_SIZE,
 375                                             AMDGPU_GEM_DOMAIN_VRAM, &ring->mqd_obj,
 376                                             &ring->mqd_gpu_addr, &ring->mqd_ptr);
 377                 if (r) {
 378                         dev_warn(adev->dev, "failed to create ring mqd ob (%d)", r);
 379                         return r;
 380                 }
 381
 382                 /* prepare MQD backup */
 383                 adev->gfx.mec.mqd_backup[AMDGPU_MAX_COMPUTE_RINGS] = kmalloc(mqd_size, GFP_KERNEL);
 384                 if (!adev->gfx.mec.mqd_backup[AMDGPU_MAX_COMPUTE_RINGS])
 385                                 dev_warn(adev->dev, "no memory to create MQD backup for ring %s\n", ring->name);
 386         }
 387
 388         if (adev->asic_type >= CHIP_NAVI10 && amdgpu_async_gfx_ring) {
 389                 /* create MQD for each KGQ */
 390                 for (i = 0; i < adev->gfx.num_gfx_rings; i++) {
 391                         ring = &adev->gfx.gfx_ring[i];
 392                         if (!ring->mqd_obj) {
 393                                 r = amdgpu_bo_create_kernel(adev, mqd_size, PAGE_SIZE,
 394                                                             AMDGPU_GEM_DOMAIN_GTT, &ring->mqd_obj,
 395                                                             &ring->mqd_gpu_addr, &ring->mqd_ptr);
 396                                 if (r) {
 397                                         dev_warn(adev->dev, "failed to create ring mqd bo (%d)", r);
 398                                         return r;
 399                                 }
 400
 401                                 /* prepare MQD backup */
 402                                 adev->gfx.me.mqd_backup[i] = kmalloc(mqd_size, GFP_KERNEL);
 403                                 if (!adev->gfx.me.mqd_backup[i])
 404                                         dev_warn(adev->dev, "no memory to create MQD backup for ring %s\n", ring->name);
 405                         }
 406                 }
 407         }
 408
 409         /* create MQD for each KCQ */
 410         for (i = 0; i < adev->gfx.num_compute_rings; i++) {
 411                 ring = &adev->gfx.compute_ring[i];
 412                 if (!ring->mqd_obj) {
 413                         r = amdgpu_bo_create_kernel(adev, mqd_size, PAGE_SIZE,
 414                                                     AMDGPU_GEM_DOMAIN_GTT, &ring->mqd_obj,
 415                                                     &ring->mqd_gpu_addr, &ring->mqd_ptr);
 416                         if (r) {
 417                                 dev_warn(adev->dev, "failed to create ring mqd bo (%d)", r);
 418                                 return r;
 419                         }
 420
 421                         /* prepare MQD backup */
 422                         adev->gfx.mec.mqd_backup[i] = kmalloc(mqd_size, GFP_KERNEL);
 423                         if (!adev->gfx.mec.mqd_backup[i])
 424                                 dev_warn(adev->dev, "no memory to create MQD backup for ring %s\n", ring->name);
 425                 }
 426         }
 427
 428         return 0;
 429 }
 430
 431 void amdgpu_gfx_mqd_sw_fini(struct amdgpu_device *adev)
 432 {
 433         struct amdgpu_ring *ring = NULL;
 434         int i;
 435
 436         if (adev->asic_type >= CHIP_NAVI10 && amdgpu_async_gfx_ring) {
 437                 for (i = 0; i < adev->gfx.num_gfx_rings; i++) {
 438                         ring = &adev->gfx.gfx_ring[i];
 439                         kfree(adev->gfx.me.mqd_backup[i]);
 440                         amdgpu_bo_free_kernel(&ring->mqd_obj,
 441                                               &ring->mqd_gpu_addr,
 442                                               &ring->mqd_ptr);
 443                 }
 444         }
 445
 446         for (i = 0; i < adev->gfx.num_compute_rings; i++) {
 447                 ring = &adev->gfx.compute_ring[i];
 448                 kfree(adev->gfx.mec.mqd_backup[i]);
 449                 amdgpu_bo_free_kernel(&ring->mqd_obj,
 450                                       &ring->mqd_gpu_addr,
 451                                       &ring->mqd_ptr);
 452         }
 453
 454         ring = &adev->gfx.kiq.ring;
 455         kfree(adev->gfx.mec.mqd_backup[AMDGPU_MAX_COMPUTE_RINGS]);
 456         amdgpu_bo_free_kernel(&ring->mqd_obj,
 457                               &ring->mqd_gpu_addr,
 458                               &ring->mqd_ptr);
 459 }
 460
 461 int amdgpu_gfx_disable_kcq(struct amdgpu_device *adev)
 462 {
 463         struct amdgpu_kiq *kiq = &adev->gfx.kiq;
 464         struct amdgpu_ring *kiq_ring = &kiq->ring;
 465         int i;
 466
 467         if (!kiq->pmf || !kiq->pmf->kiq_unmap_queues)
 468                 return -EINVAL;
 469
 470         if (amdgpu_ring_alloc(kiq_ring, kiq->pmf->unmap_queues_size *
 471                                         adev->gfx.num_compute_rings))
 472                 return -ENOMEM;
 473
 474         for (i = 0; i < adev->gfx.num_compute_rings; i++)
 475                 kiq->pmf->kiq_unmap_queues(kiq_ring, &adev->gfx.compute_ring[i],
 476                                            RESET_QUEUES, 0, 0);
 477
 478         return amdgpu_ring_test_helper(kiq_ring);
 479 }
 480
 481 int amdgpu_queue_mask_bit_to_set_resource_bit(struct amdgpu_device *adev,
 482                                         int queue_bit)
 483 {
 484         int mec, pipe, queue;
 485         int set_resource_bit = 0;
 486
 487         amdgpu_queue_mask_bit_to_mec_queue(adev, queue_bit, &mec, &pipe, &queue);
 488
 489         set_resource_bit = mec * 4 * 8 + pipe * 8 + queue;
 490
 491         return set_resource_bit;
 492 }
 493
 494 int amdgpu_gfx_enable_kcq(struct amdgpu_device *adev)
 495 {
 496         struct amdgpu_kiq *kiq = &adev->gfx.kiq;
 497         struct amdgpu_ring *kiq_ring = &adev->gfx.kiq.ring;
 498         uint64_t queue_mask = 0;
 499         int r, i;
 500
 501         if (!kiq->pmf || !kiq->pmf->kiq_map_queues || !kiq->pmf->kiq_set_resources)
 502                 return -EINVAL;
 503
 504         for (i = 0; i < AMDGPU_MAX_COMPUTE_QUEUES; ++i) {
 505                 if (!test_bit(i, adev->gfx.mec.queue_bitmap))
 506                         continue;
 507
 508                 /* This situation may be hit in the future if a new HW
 509                  * generation exposes more than 64 queues. If so, the
 510                  * definition of queue_mask needs updating */
 511                 if (WARN_ON(i > (sizeof(queue_mask)*8))) {
 512                         DRM_ERROR("Invalid KCQ enabled: %d\n", i);
 513                         break;
 514                 }
 515
 516                 queue_mask |= (1ull << amdgpu_queue_mask_bit_to_set_resource_bit(adev, i));
 517         }
 518
 519         DRM_INFO("kiq ring mec %d pipe %d q %d\n", kiq_ring->me, kiq_ring->pipe,
 520                                                         kiq_ring->queue);
 521
 522         r = amdgpu_ring_alloc(kiq_ring, kiq->pmf->map_queues_size *
 523                                         adev->gfx.num_compute_rings +
 524                                         kiq->pmf->set_resources_size);
 525         if (r) {
 526                 DRM_ERROR("Failed to lock KIQ (%d).\n", r);
 527                 return r;
 528         }
 529
 530         kiq->pmf->kiq_set_resources(kiq_ring, queue_mask);
 531         for (i = 0; i < adev->gfx.num_compute_rings; i++)
 532                 kiq->pmf->kiq_map_queues(kiq_ring, &adev->gfx.compute_ring[i]);
 533
 534         r = amdgpu_ring_test_helper(kiq_ring);
 535         if (r)
 536                 DRM_ERROR("KCQ enable failed\n");
 537
 538         return r;
 539 }
 540
 541 /* amdgpu_gfx_off_ctrl - Handle gfx off feature enable/disable
 542  *
 543  * @adev: amdgpu_device pointer
 544  * @bool enable true: enable gfx off feature, false: disable gfx off feature
 545  *
 546  * 1. gfx off feature will be enabled by gfx ip after gfx cg gp enabled.
 547  * 2. other client can send request to disable gfx off feature, the request should be honored.
 548  * 3. other client can cancel their request of disable gfx off feature
 549  * 4. other client should not send request to enable gfx off feature before disable gfx off feature.
 550  */
 551
 552 void amdgpu_gfx_off_ctrl(struct amdgpu_device *adev, bool enable)
 553 {
 554         if (!(adev->pm.pp_feature & PP_GFXOFF_MASK))
 555                 return;
 556
 557         mutex_lock(&adev->gfx.gfx_off_mutex);
 558
 559         if (!enable)
 560                 adev->gfx.gfx_off_req_count++;
 561         else if (adev->gfx.gfx_off_req_count > 0)
 562                 adev->gfx.gfx_off_req_count--;
 563
 564         if (enable && !adev->gfx.gfx_off_state && !adev->gfx.gfx_off_req_count) {
 565                 schedule_delayed_work(&adev->gfx.gfx_off_delay_work, GFX_OFF_DELAY_ENABLE);
 566         } else if (!enable && adev->gfx.gfx_off_state) {
 567                 if (!amdgpu_dpm_set_powergating_by_smu(adev, AMD_IP_BLOCK_TYPE_GFX, false)) {
 568                         adev->gfx.gfx_off_state = false;
 569
 570                         if (adev->gfx.funcs->init_spm_golden) {
 571                                 dev_dbg(adev->dev, "GFXOFF is disabled, re-init SPM golden settings\n");
 572                                 amdgpu_gfx_init_spm_golden(adev);
 573                         }
 574                 }
 575         }
 576
 577         mutex_unlock(&adev->gfx.gfx_off_mutex);
 578 }
 579
 580 int amdgpu_get_gfx_off_status(struct amdgpu_device *adev, uint32_t *value)
 581 {
 582
 583         int r = 0;
 584
 585         mutex_lock(&adev->gfx.gfx_off_mutex);
 586
 587         r = smu_get_status_gfxoff(adev, value);
 588
 589         mutex_unlock(&adev->gfx.gfx_off_mutex);
 590
 591         return r;
 592 }
 593
 594 int amdgpu_gfx_ras_late_init(struct amdgpu_device *adev)
 595 {
 596         int r;
 597         struct ras_fs_if fs_info = {
 598                 .sysfs_name = "gfx_err_count",
 599         };
 600         struct ras_ih_if ih_info = {
 601                 .cb = amdgpu_gfx_process_ras_data_cb,
 602         };
 603
 604         if (!adev->gfx.ras_if) {
 605                 adev->gfx.ras_if = kmalloc(sizeof(struct ras_common_if), GFP_KERNEL);
 606                 if (!adev->gfx.ras_if)
 607                         return -ENOMEM;
 608                 adev->gfx.ras_if->block = AMDGPU_RAS_BLOCK__GFX;
 609                 adev->gfx.ras_if->type = AMDGPU_RAS_ERROR__MULTI_UNCORRECTABLE;
 610                 adev->gfx.ras_if->sub_block_index = 0;
 611                 strcpy(adev->gfx.ras_if->name, "gfx");
 612         }
 613         fs_info.head = ih_info.head = *adev->gfx.ras_if;
 614
 615         r = amdgpu_ras_late_init(adev, adev->gfx.ras_if,
 616                                  &fs_info, &ih_info);
 617         if (r)
 618                 goto free;
 619
 620         if (amdgpu_ras_is_supported(adev, adev->gfx.ras_if->block)) {
 621                 r = amdgpu_irq_get(adev, &adev->gfx.cp_ecc_error_irq, 0);
 622                 if (r)
 623                         goto late_fini;
 624         } else {
 625                 /* free gfx ras_if if ras is not supported */
 626                 r = 0;
 627                 goto free;
 628         }
 629
 630         return 0;
 631 late_fini:
 632         amdgpu_ras_late_fini(adev, adev->gfx.ras_if, &ih_info);
 633 free:
 634         kfree(adev->gfx.ras_if);
 635         adev->gfx.ras_if = NULL;
 636         return r;
 637 }
 638
 639 void amdgpu_gfx_ras_fini(struct amdgpu_device *adev)
 640 {
 641         if (amdgpu_ras_is_supported(adev, AMDGPU_RAS_BLOCK__GFX) &&
 642                         adev->gfx.ras_if) {
 643                 struct ras_common_if *ras_if = adev->gfx.ras_if;
 644                 struct ras_ih_if ih_info = {
 645                         .head = *ras_if,
 646                         .cb = amdgpu_gfx_process_ras_data_cb,
 647                 };
 648
 649                 amdgpu_ras_late_fini(adev, ras_if, &ih_info);
 650                 kfree(ras_if);
 651         }
 652 }
 653
 654 int amdgpu_gfx_process_ras_data_cb(struct amdgpu_device *adev,
 655                 void *err_data,
 656                 struct amdgpu_iv_entry *entry)
 657 {
 658         /* TODO ue will trigger an interrupt.
 659          *
 660          * When “Full RAS” is enabled, the per-IP interrupt sources should
 661          * be disabled and the driver should only look for the aggregated
 662          * interrupt via sync flood
 663          */
 664         if (!amdgpu_ras_is_supported(adev, AMDGPU_RAS_BLOCK__GFX)) {
 665                 kgd2kfd_set_sram_ecc_flag(adev->kfd.dev);
 666                 if (adev->gfx.funcs->query_ras_error_count)
 667                         adev->gfx.funcs->query_ras_error_count(adev, err_data);
 668                 amdgpu_ras_reset_gpu(adev);
 669         }
 670         return AMDGPU_RAS_SUCCESS;
 671 }
 672
 673 int amdgpu_gfx_cp_ecc_error_irq(struct amdgpu_device *adev,
 674                                   struct amdgpu_irq_src *source,
 675                                   struct amdgpu_iv_entry *entry)
 676 {
 677         struct ras_common_if *ras_if = adev->gfx.ras_if;
 678         struct ras_dispatch_if ih_data = {
 679                 .entry = entry,
 680         };
 681
 682         if (!ras_if)
 683                 return 0;
 684
 685         ih_data.head = *ras_if;
 686
 687         DRM_ERROR("CP ECC ERROR IRQ\n");
 688         amdgpu_ras_interrupt_dispatch(adev, &ih_data);
 689         return 0;
 690 }
 691
 692 uint32_t amdgpu_kiq_rreg(struct amdgpu_device *adev, uint32_t reg)
 693 {
 694         signed long r, cnt = 0;
 695         unsigned long flags;
 696         uint32_t seq, reg_val_offs = 0, value = 0;
 697         struct amdgpu_kiq *kiq = &adev->gfx.kiq;
 698         struct amdgpu_ring *ring = &kiq->ring;
 699
 700         if (adev->in_pci_err_recovery)
 701                 return 0;
 702
 703         BUG_ON(!ring->funcs->emit_rreg);
 704
 705         spin_lock_irqsave(&kiq->ring_lock, flags);
 706         if (amdgpu_device_wb_get(adev, &reg_val_offs)) {
 707                 pr_err("critical bug! too many kiq readers\n");
 708                 goto failed_unlock;
 709         }
 710         amdgpu_ring_alloc(ring, 32);
 711         amdgpu_ring_emit_rreg(ring, reg, reg_val_offs);
 712         r = amdgpu_fence_emit_polling(ring, &seq, MAX_KIQ_REG_WAIT);
 713         if (r)
 714                 goto failed_undo;
 715
 716         amdgpu_ring_commit(ring);
 717         spin_unlock_irqrestore(&kiq->ring_lock, flags);
 718
 719         r = amdgpu_fence_wait_polling(ring, seq, MAX_KIQ_REG_WAIT);
 720
 721         /* don't wait anymore for gpu reset case because this way may
 722          * block gpu_recover() routine forever, e.g. this virt_kiq_rreg
 723          * is triggered in TTM and ttm_bo_lock_delayed_workqueue() will
 724          * never return if we keep waiting in virt_kiq_rreg, which cause
 725          * gpu_recover() hang there.
 726          *
 727          * also don't wait anymore for IRQ context
 728          * */
 729         if (r < 1 && (amdgpu_in_reset(adev) || in_interrupt()))
 730                 goto failed_kiq_read;
 731
 732         might_sleep();
 733         while (r < 1 && cnt++ < MAX_KIQ_REG_TRY) {
 734                 msleep(MAX_KIQ_REG_BAILOUT_INTERVAL);
 735                 r = amdgpu_fence_wait_polling(ring, seq, MAX_KIQ_REG_WAIT);
 736         }
 737
 738         if (cnt > MAX_KIQ_REG_TRY)
 739                 goto failed_kiq_read;
 740
 741         mb();
 742         value = adev->wb.wb[reg_val_offs];
 743         amdgpu_device_wb_free(adev, reg_val_offs);
 744         return value;
 745
 746 failed_undo:
 747         amdgpu_ring_undo(ring);
 748 failed_unlock:
 749         spin_unlock_irqrestore(&kiq->ring_lock, flags);
 750 failed_kiq_read:
 751         if (reg_val_offs)
 752                 amdgpu_device_wb_free(adev, reg_val_offs);
 753         dev_err(adev->dev, "failed to read reg:%x\n", reg);
 754         return ~0;
 755 }
 756
 757 void amdgpu_kiq_wreg(struct amdgpu_device *adev, uint32_t reg, uint32_t v)
 758 {
 759         signed long r, cnt = 0;
 760         unsigned long flags;
 761         uint32_t seq;
 762         struct amdgpu_kiq *kiq = &adev->gfx.kiq;
 763         struct amdgpu_ring *ring = &kiq->ring;
 764
 765         BUG_ON(!ring->funcs->emit_wreg);
 766
 767         if (adev->in_pci_err_recovery)
 768                 return;
 769
 770         spin_lock_irqsave(&kiq->ring_lock, flags);
 771         amdgpu_ring_alloc(ring, 32);
 772         amdgpu_ring_emit_wreg(ring, reg, v);
 773         r = amdgpu_fence_emit_polling(ring, &seq, MAX_KIQ_REG_WAIT);
 774         if (r)
 775                 goto failed_undo;
 776
 777         amdgpu_ring_commit(ring);
 778         spin_unlock_irqrestore(&kiq->ring_lock, flags);
 779
 780         r = amdgpu_fence_wait_polling(ring, seq, MAX_KIQ_REG_WAIT);
 781
 782         /* don't wait anymore for gpu reset case because this way may
 783          * block gpu_recover() routine forever, e.g. this virt_kiq_rreg
 784          * is triggered in TTM and ttm_bo_lock_delayed_workqueue() will
 785          * never return if we keep waiting in virt_kiq_rreg, which cause
 786          * gpu_recover() hang there.
 787          *
 788          * also don't wait anymore for IRQ context
 789          * */
 790         if (r < 1 && (amdgpu_in_reset(adev) || in_interrupt()))
 791                 goto failed_kiq_write;
 792
 793         might_sleep();
 794         while (r < 1 && cnt++ < MAX_KIQ_REG_TRY) {
 795
 796                 msleep(MAX_KIQ_REG_BAILOUT_INTERVAL);
 797                 r = amdgpu_fence_wait_polling(ring, seq, MAX_KIQ_REG_WAIT);
 798         }
 799
 800         if (cnt > MAX_KIQ_REG_TRY)
 801                 goto failed_kiq_write;
 802
 803         return;
 804
 805 failed_undo:
 806         amdgpu_ring_undo(ring);
 807         spin_unlock_irqrestore(&kiq->ring_lock, flags);
 808 failed_kiq_write:
 809         dev_err(adev->dev, "failed to write reg:%x\n", reg);
 810 }
 811
 812 int amdgpu_gfx_get_num_kcq(struct amdgpu_device *adev)
 813 {
 814         if (amdgpu_num_kcq == -1) {
 815                 return 8;
 816         } else if (amdgpu_num_kcq > 8 || amdgpu_num_kcq < 0) {
 817                 dev_warn(adev->dev, "set kernel compute queue number to 8 due to invalid parameter provided by user\n");
 818                 return 8;
 819         }
 820         return amdgpu_num_kcq;
 821 }
 822
 823 /* amdgpu_gfx_state_change_set - Handle gfx power state change set
 824  * @adev: amdgpu_device pointer
 825  * @state: gfx power state(1 -sGpuChangeState_D0Entry and 2 -sGpuChangeState_D3Entry)
 826  *
 827  */
 828
 829 void amdgpu_gfx_state_change_set(struct amdgpu_device *adev, enum gfx_change_state state)
 830 {
 831         if (is_support_sw_smu(adev)) {
 832                 smu_gfx_state_change_set(&adev->smu, state);
 833         } else {
 834                 mutex_lock(&adev->pm.mutex);
 835                 if (adev->powerplay.pp_funcs &&
 836                     adev->powerplay.pp_funcs->gfx_state_change_set)
 837                         ((adev)->powerplay.pp_funcs->gfx_state_change_set(
 838                                 (adev)->powerplay.pp_handle, state));
 839                 mutex_unlock(&adev->pm.mutex);
 840         }
 841 }