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

   1 /*
   2  * Copyright 2015 Advanced Micro Devices, Inc.
   3  *
   4  * Permission is hereby granted, free of charge, to any person obtaining a
   5  * copy of this software and associated documentation files (the "Software"),
   6  * to deal in the Software without restriction, including without limitation
   7  * the rights to use, copy, modify, merge, publish, distribute, sublicense,
   8  * and/or sell copies of the Software, and to permit persons to whom the
   9  * Software is furnished to do so, subject to the following conditions:
  10  *
  11  * The above copyright notice and this permission notice shall be included in
  12  * all copies or substantial portions of the Software.
  13  *
  14  * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
  15  * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
  16  * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.  IN NO EVENT SHALL
  17  * THE COPYRIGHT HOLDER(S) OR AUTHOR(S) BE LIABLE FOR ANY CLAIM, DAMAGES OR
  18  * OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE,
  19  * ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
  20  * OTHER DEALINGS IN THE SOFTWARE.
  21  *
  22  *
  23  */
  24 #include <linux/kthread.h>
  25 #include <linux/wait.h>
  26 #include <linux/sched.h>
  27
  28 #include <drm/drm_drv.h>
  29
  30 #include "amdgpu.h"
  31 #include "amdgpu_trace.h"
  32 #include "amdgpu_reset.h"
  33
  34 static enum drm_gpu_sched_stat amdgpu_job_timedout(struct drm_sched_job *s_job)
  35 {
  36         struct amdgpu_ring *ring = to_amdgpu_ring(s_job->sched);
  37         struct amdgpu_job *job = to_amdgpu_job(s_job);
  38         struct amdgpu_task_info ti;
  39         struct amdgpu_device *adev = ring->adev;
  40         int idx;
  41         int r;
  42
  43         if (!drm_dev_enter(adev_to_drm(adev), &idx)) {
  44                 DRM_INFO("%s - device unplugged skipping recovery on scheduler:%s",
  45                          __func__, s_job->sched->name);
  46
  47                 /* Effectively the job is aborted as the device is gone */
  48                 return DRM_GPU_SCHED_STAT_ENODEV;
  49         }
  50
  51         memset(&ti, 0, sizeof(struct amdgpu_task_info));
  52         adev->job_hang = true;
  53
  54         if (amdgpu_gpu_recovery &&
  55             amdgpu_ring_soft_recovery(ring, job->vmid, s_job->s_fence->parent)) {
  56                 DRM_ERROR("ring %s timeout, but soft recovered\n",
  57                           s_job->sched->name);
  58                 goto exit;
  59         }
  60
  61         amdgpu_vm_get_task_info(ring->adev, job->pasid, &ti);
  62         DRM_ERROR("ring %s timeout, signaled seq=%u, emitted seq=%u\n",
  63                   job->base.sched->name, atomic_read(&ring->fence_drv.last_seq),
  64                   ring->fence_drv.sync_seq);
  65         DRM_ERROR("Process information: process %s pid %d thread %s pid %d\n",
  66                   ti.process_name, ti.tgid, ti.task_name, ti.pid);
  67
  68         if (amdgpu_device_should_recover_gpu(ring->adev)) {
  69                 struct amdgpu_reset_context reset_context;
  70                 memset(&reset_context, 0, sizeof(reset_context));
  71
  72                 reset_context.method = AMD_RESET_METHOD_NONE;
  73                 reset_context.reset_req_dev = adev;
  74                 clear_bit(AMDGPU_NEED_FULL_RESET, &reset_context.flags);
  75
  76                 r = amdgpu_device_gpu_recover(ring->adev, job, &reset_context);
  77                 if (r)
  78                         DRM_ERROR("GPU Recovery Failed: %d\n", r);
  79         } else {
  80                 drm_sched_suspend_timeout(&ring->sched);
  81                 if (amdgpu_sriov_vf(adev))
  82                         adev->virt.tdr_debug = true;
  83         }
  84
  85 exit:
  86         adev->job_hang = false;
  87         drm_dev_exit(idx);
  88         return DRM_GPU_SCHED_STAT_NOMINAL;
  89 }
  90
  91 int amdgpu_job_alloc(struct amdgpu_device *adev, struct amdgpu_vm *vm,
  92                      struct drm_sched_entity *entity, void *owner,
  93                      unsigned int num_ibs, struct amdgpu_job **job)
  94 {
  95         if (num_ibs == 0)
  96                 return -EINVAL;
  97
  98         *job = kzalloc(struct_size(*job, ibs, num_ibs), GFP_KERNEL);
  99         if (!*job)
 100                 return -ENOMEM;
 101
 102         /*
 103          * Initialize the scheduler to at least some ring so that we always
 104          * have a pointer to adev.
 105          */
 106         (*job)->base.sched = &adev->rings[0]->sched;
 107         (*job)->vm = vm;
 108
 109         amdgpu_sync_create(&(*job)->explicit_sync);
 110         (*job)->vram_lost_counter = atomic_read(&adev->vram_lost_counter);
 111         (*job)->vm_pd_addr = AMDGPU_BO_INVALID_OFFSET;
 112
 113         if (!entity)
 114                 return 0;
 115
 116         return drm_sched_job_init(&(*job)->base, entity, owner);
 117 }
 118
 119 int amdgpu_job_alloc_with_ib(struct amdgpu_device *adev,
 120                              struct drm_sched_entity *entity, void *owner,
 121                              size_t size, enum amdgpu_ib_pool_type pool_type,
 122                              struct amdgpu_job **job)
 123 {
 124         int r;
 125
 126         r = amdgpu_job_alloc(adev, NULL, entity, owner, 1, job);
 127         if (r)
 128                 return r;
 129
 130         (*job)->num_ibs = 1;
 131         r = amdgpu_ib_get(adev, NULL, size, pool_type, &(*job)->ibs[0]);
 132         if (r) {
 133                 if (entity)
 134                         drm_sched_job_cleanup(&(*job)->base);
 135                 kfree(*job);
 136         }
 137
 138         return r;
 139 }
 140
 141 void amdgpu_job_set_resources(struct amdgpu_job *job, struct amdgpu_bo *gds,
 142                               struct amdgpu_bo *gws, struct amdgpu_bo *oa)
 143 {
 144         if (gds) {
 145                 job->gds_base = amdgpu_bo_gpu_offset(gds) >> PAGE_SHIFT;
 146                 job->gds_size = amdgpu_bo_size(gds) >> PAGE_SHIFT;
 147         }
 148         if (gws) {
 149                 job->gws_base = amdgpu_bo_gpu_offset(gws) >> PAGE_SHIFT;
 150                 job->gws_size = amdgpu_bo_size(gws) >> PAGE_SHIFT;
 151         }
 152         if (oa) {
 153                 job->oa_base = amdgpu_bo_gpu_offset(oa) >> PAGE_SHIFT;
 154                 job->oa_size = amdgpu_bo_size(oa) >> PAGE_SHIFT;
 155         }
 156 }
 157
 158 void amdgpu_job_free_resources(struct amdgpu_job *job)
 159 {
 160         struct amdgpu_ring *ring = to_amdgpu_ring(job->base.sched);
 161         struct dma_fence *f;
 162         unsigned i;
 163
 164         /* use sched fence if available */
 165         f = job->base.s_fence ? &job->base.s_fence->finished :  &job->hw_fence;
 166         for (i = 0; i < job->num_ibs; ++i)
 167                 amdgpu_ib_free(ring->adev, &job->ibs[i], f);
 168 }
 169
 170 static void amdgpu_job_free_cb(struct drm_sched_job *s_job)
 171 {
 172         struct amdgpu_job *job = to_amdgpu_job(s_job);
 173
 174         drm_sched_job_cleanup(s_job);
 175
 176         amdgpu_sync_free(&job->explicit_sync);
 177
 178         /* only put the hw fence if has embedded fence */
 179         if (!job->hw_fence.ops)
 180                 kfree(job);
 181         else
 182                 dma_fence_put(&job->hw_fence);
 183 }
 184
 185 void amdgpu_job_set_gang_leader(struct amdgpu_job *job,
 186                                 struct amdgpu_job *leader)
 187 {
 188         struct dma_fence *fence = &leader->base.s_fence->scheduled;
 189
 190         WARN_ON(job->gang_submit);
 191
 192         /*
 193          * Don't add a reference when we are the gang leader to avoid circle
 194          * dependency.
 195          */
 196         if (job != leader)
 197                 dma_fence_get(fence);
 198         job->gang_submit = fence;
 199 }
 200
 201 void amdgpu_job_free(struct amdgpu_job *job)
 202 {
 203         if (job->base.entity)
 204                 drm_sched_job_cleanup(&job->base);
 205
 206         amdgpu_job_free_resources(job);
 207         amdgpu_sync_free(&job->explicit_sync);
 208         if (job->gang_submit != &job->base.s_fence->scheduled)
 209                 dma_fence_put(job->gang_submit);
 210
 211         if (!job->hw_fence.ops)
 212                 kfree(job);
 213         else
 214                 dma_fence_put(&job->hw_fence);
 215 }
 216
 217 struct dma_fence *amdgpu_job_submit(struct amdgpu_job *job)
 218 {
 219         struct dma_fence *f;
 220
 221         drm_sched_job_arm(&job->base);
 222         f = dma_fence_get(&job->base.s_fence->finished);
 223         amdgpu_job_free_resources(job);
 224         drm_sched_entity_push_job(&job->base);
 225
 226         return f;
 227 }
 228
 229 int amdgpu_job_submit_direct(struct amdgpu_job *job, struct amdgpu_ring *ring,
 230                              struct dma_fence **fence)
 231 {
 232         int r;
 233
 234         job->base.sched = &ring->sched;
 235         r = amdgpu_ib_schedule(ring, job->num_ibs, job->ibs, job, fence);
 236
 237         if (r)
 238                 return r;
 239
 240         amdgpu_job_free(job);
 241         return 0;
 242 }
 243
 244 static struct dma_fence *
 245 amdgpu_job_prepare_job(struct drm_sched_job *sched_job,
 246                       struct drm_sched_entity *s_entity)
 247 {
 248         struct amdgpu_ring *ring = to_amdgpu_ring(s_entity->rq->sched);
 249         struct amdgpu_job *job = to_amdgpu_job(sched_job);
 250         struct dma_fence *fence = NULL;
 251         int r;
 252
 253         if (!fence && job->gang_submit)
 254                 fence = amdgpu_device_switch_gang(ring->adev, job->gang_submit);
 255
 256         while (!fence && job->vm && !job->vmid) {
 257                 r = amdgpu_vmid_grab(job->vm, ring, job, &fence);
 258                 if (r)
 259                         DRM_ERROR("Error getting VM ID (%d)\n", r);
 260         }
 261
 262         return fence;
 263 }
 264
 265 static struct dma_fence *amdgpu_job_run(struct drm_sched_job *sched_job)
 266 {
 267         struct amdgpu_ring *ring = to_amdgpu_ring(sched_job->sched);
 268         struct amdgpu_device *adev = ring->adev;
 269         struct dma_fence *fence = NULL, *finished;
 270         struct amdgpu_job *job;
 271         int r = 0;
 272
 273         job = to_amdgpu_job(sched_job);
 274         finished = &job->base.s_fence->finished;
 275
 276         trace_amdgpu_sched_run_job(job);
 277
 278         /* Skip job if VRAM is lost and never resubmit gangs */
 279         if (job->vram_lost_counter != atomic_read(&adev->vram_lost_counter) ||
 280             (job->job_run_counter && job->gang_submit))
 281                 dma_fence_set_error(finished, -ECANCELED);
 282
 283         if (finished->error < 0) {
 284                 DRM_INFO("Skip scheduling IBs!\n");
 285         } else {
 286                 r = amdgpu_ib_schedule(ring, job->num_ibs, job->ibs, job,
 287                                        &fence);
 288                 if (r)
 289                         DRM_ERROR("Error scheduling IBs (%d)\n", r);
 290         }
 291
 292         job->job_run_counter++;
 293         amdgpu_job_free_resources(job);
 294
 295         fence = r ? ERR_PTR(r) : fence;
 296         return fence;
 297 }
 298
 299 #define to_drm_sched_job(sched_job)             \
 300                 container_of((sched_job), struct drm_sched_job, queue_node)
 301
 302 void amdgpu_job_stop_all_jobs_on_sched(struct drm_gpu_scheduler *sched)
 303 {
 304         struct drm_sched_job *s_job;
 305         struct drm_sched_entity *s_entity = NULL;
 306         int i;
 307
 308         /* Signal all jobs not yet scheduled */
 309         for (i = DRM_SCHED_PRIORITY_COUNT - 1; i >= DRM_SCHED_PRIORITY_MIN; i--) {
 310                 struct drm_sched_rq *rq = &sched->sched_rq[i];
 311                 spin_lock(&rq->lock);
 312                 list_for_each_entry(s_entity, &rq->entities, list) {
 313                         while ((s_job = to_drm_sched_job(spsc_queue_pop(&s_entity->job_queue)))) {
 314                                 struct drm_sched_fence *s_fence = s_job->s_fence;
 315
 316                                 dma_fence_signal(&s_fence->scheduled);
 317                                 dma_fence_set_error(&s_fence->finished, -EHWPOISON);
 318                                 dma_fence_signal(&s_fence->finished);
 319                         }
 320                 }
 321                 spin_unlock(&rq->lock);
 322         }
 323
 324         /* Signal all jobs already scheduled to HW */
 325         list_for_each_entry(s_job, &sched->pending_list, list) {
 326                 struct drm_sched_fence *s_fence = s_job->s_fence;
 327
 328                 dma_fence_set_error(&s_fence->finished, -EHWPOISON);
 329                 dma_fence_signal(&s_fence->finished);
 330         }
 331 }
 332
 333 const struct drm_sched_backend_ops amdgpu_sched_ops = {
 334         .prepare_job = amdgpu_job_prepare_job,
 335         .run_job = amdgpu_job_run,
 336         .timedout_job = amdgpu_job_timedout,
 337         .free_job = amdgpu_job_free_cb
 338 };