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 "amdgpu.h"
  29 #include "amdgpu_trace.h"
  30
  31 static void amdgpu_job_timedout(struct drm_sched_job *s_job)
  32 {
  33         struct amdgpu_ring *ring = to_amdgpu_ring(s_job->sched);
  34         struct amdgpu_job *job = to_amdgpu_job(s_job);
  35         struct amdgpu_task_info ti;
  36
  37         memset(&ti, 0, sizeof(struct amdgpu_task_info));
  38
  39         if (amdgpu_ring_soft_recovery(ring, job->vmid, s_job->s_fence->parent)) {
  40                 DRM_ERROR("ring %s timeout, but soft recovered\n",
  41                           s_job->sched->name);
  42                 return;
  43         }
  44
  45         amdgpu_vm_get_task_info(ring->adev, job->pasid, &ti);
  46         DRM_ERROR("ring %s timeout, signaled seq=%u, emitted seq=%u\n",
  47                   job->base.sched->name, atomic_read(&ring->fence_drv.last_seq),
  48                   ring->fence_drv.sync_seq);
  49         DRM_ERROR("Process information: process %s pid %d thread %s pid %d\n",
  50                   ti.process_name, ti.tgid, ti.task_name, ti.pid);
  51
  52         if (amdgpu_device_should_recover_gpu(ring->adev))
  53                 amdgpu_device_gpu_recover(ring->adev, job);
  54         else
  55                 drm_sched_suspend_timeout(&ring->sched);
  56 }
  57
  58 int amdgpu_job_alloc(struct amdgpu_device *adev, unsigned num_ibs,
  59                      struct amdgpu_job **job, struct amdgpu_vm *vm)
  60 {
  61         size_t size = sizeof(struct amdgpu_job);
  62
  63         if (num_ibs == 0)
  64                 return -EINVAL;
  65
  66         size += sizeof(struct amdgpu_ib) * num_ibs;
  67
  68         *job = kzalloc(size, GFP_KERNEL);
  69         if (!*job)
  70                 return -ENOMEM;
  71
  72         /*
  73          * Initialize the scheduler to at least some ring so that we always
  74          * have a pointer to adev.
  75          */
  76         (*job)->base.sched = &adev->rings[0]->sched;
  77         (*job)->vm = vm;
  78         (*job)->ibs = (void *)&(*job)[1];
  79         (*job)->num_ibs = num_ibs;
  80
  81         amdgpu_sync_create(&(*job)->sync);
  82         amdgpu_sync_create(&(*job)->sched_sync);
  83         (*job)->vram_lost_counter = atomic_read(&adev->vram_lost_counter);
  84         (*job)->vm_pd_addr = AMDGPU_BO_INVALID_OFFSET;
  85
  86         return 0;
  87 }
  88
  89 int amdgpu_job_alloc_with_ib(struct amdgpu_device *adev, unsigned size,
  90                              struct amdgpu_job **job)
  91 {
  92         int r;
  93
  94         r = amdgpu_job_alloc(adev, 1, job, NULL);
  95         if (r)
  96                 return r;
  97
  98         r = amdgpu_ib_get(adev, NULL, size, &(*job)->ibs[0]);
  99         if (r)
 100                 kfree(*job);
 101
 102         return r;
 103 }
 104
 105 void amdgpu_job_free_resources(struct amdgpu_job *job)
 106 {
 107         struct amdgpu_ring *ring = to_amdgpu_ring(job->base.sched);
 108         struct dma_fence *f;
 109         unsigned i;
 110
 111         /* use sched fence if available */
 112         f = job->base.s_fence ? &job->base.s_fence->finished : job->fence;
 113
 114         for (i = 0; i < job->num_ibs; ++i)
 115                 amdgpu_ib_free(ring->adev, &job->ibs[i], f);
 116 }
 117
 118 static void amdgpu_job_free_cb(struct drm_sched_job *s_job)
 119 {
 120         struct amdgpu_ring *ring = to_amdgpu_ring(s_job->sched);
 121         struct amdgpu_job *job = to_amdgpu_job(s_job);
 122
 123         drm_sched_job_cleanup(s_job);
 124
 125         amdgpu_ring_priority_put(ring, s_job->s_priority);
 126         dma_fence_put(job->fence);
 127         amdgpu_sync_free(&job->sync);
 128         amdgpu_sync_free(&job->sched_sync);
 129         kfree(job);
 130 }
 131
 132 void amdgpu_job_free(struct amdgpu_job *job)
 133 {
 134         amdgpu_job_free_resources(job);
 135
 136         dma_fence_put(job->fence);
 137         amdgpu_sync_free(&job->sync);
 138         amdgpu_sync_free(&job->sched_sync);
 139         kfree(job);
 140 }
 141
 142 int amdgpu_job_submit(struct amdgpu_job *job, struct drm_sched_entity *entity,
 143                       void *owner, struct dma_fence **f)
 144 {
 145         enum drm_sched_priority priority;
 146         struct amdgpu_ring *ring;
 147         int r;
 148
 149         if (!f)
 150                 return -EINVAL;
 151
 152         r = drm_sched_job_init(&job->base, entity, owner);
 153         if (r)
 154                 return r;
 155
 156         *f = dma_fence_get(&job->base.s_fence->finished);
 157         amdgpu_job_free_resources(job);
 158         priority = job->base.s_priority;
 159         drm_sched_entity_push_job(&job->base, entity);
 160
 161         ring = to_amdgpu_ring(entity->rq->sched);
 162         amdgpu_ring_priority_get(ring, priority);
 163
 164         return 0;
 165 }
 166
 167 int amdgpu_job_submit_direct(struct amdgpu_job *job, struct amdgpu_ring *ring,
 168                              struct dma_fence **fence)
 169 {
 170         int r;
 171
 172         job->base.sched = &ring->sched;
 173         r = amdgpu_ib_schedule(ring, job->num_ibs, job->ibs, NULL, fence);
 174         job->fence = dma_fence_get(*fence);
 175         if (r)
 176                 return r;
 177
 178         amdgpu_job_free(job);
 179         return 0;
 180 }
 181
 182 static struct dma_fence *amdgpu_job_dependency(struct drm_sched_job *sched_job,
 183                                                struct drm_sched_entity *s_entity)
 184 {
 185         struct amdgpu_ring *ring = to_amdgpu_ring(s_entity->rq->sched);
 186         struct amdgpu_job *job = to_amdgpu_job(sched_job);
 187         struct amdgpu_vm *vm = job->vm;
 188         struct dma_fence *fence;
 189         bool explicit = false;
 190         int r;
 191
 192         fence = amdgpu_sync_get_fence(&job->sync, &explicit);
 193         if (fence && explicit) {
 194                 if (drm_sched_dependency_optimized(fence, s_entity)) {
 195                         r = amdgpu_sync_fence(&job->sched_sync, fence, false);
 196                         if (r)
 197                                 DRM_ERROR("Error adding fence (%d)\n", r);
 198                 }
 199         }
 200
 201         while (fence == NULL && vm && !job->vmid) {
 202                 r = amdgpu_vmid_grab(vm, ring, &job->sync,
 203                                      &job->base.s_fence->finished,
 204                                      job);
 205                 if (r)
 206                         DRM_ERROR("Error getting VM ID (%d)\n", r);
 207
 208                 fence = amdgpu_sync_get_fence(&job->sync, NULL);
 209         }
 210
 211         return fence;
 212 }
 213
 214 static struct dma_fence *amdgpu_job_run(struct drm_sched_job *sched_job)
 215 {
 216         struct amdgpu_ring *ring = to_amdgpu_ring(sched_job->sched);
 217         struct dma_fence *fence = NULL, *finished;
 218         struct amdgpu_job *job;
 219         int r = 0;
 220
 221         job = to_amdgpu_job(sched_job);
 222         finished = &job->base.s_fence->finished;
 223
 224         BUG_ON(amdgpu_sync_peek_fence(&job->sync, NULL));
 225
 226         trace_amdgpu_sched_run_job(job);
 227
 228         if (job->vram_lost_counter != atomic_read(&ring->adev->vram_lost_counter))
 229                 dma_fence_set_error(finished, -ECANCELED);/* skip IB as well if VRAM lost */
 230
 231         if (finished->error < 0) {
 232                 DRM_INFO("Skip scheduling IBs!\n");
 233         } else {
 234                 r = amdgpu_ib_schedule(ring, job->num_ibs, job->ibs, job,
 235                                        &fence);
 236                 if (r)
 237                         DRM_ERROR("Error scheduling IBs (%d)\n", r);
 238         }
 239         /* if gpu reset, hw fence will be replaced here */
 240         dma_fence_put(job->fence);
 241         job->fence = dma_fence_get(fence);
 242
 243         amdgpu_job_free_resources(job);
 244
 245         fence = r ? ERR_PTR(r) : fence;
 246         return fence;
 247 }
 248
 249 #define to_drm_sched_job(sched_job)             \
 250                 container_of((sched_job), struct drm_sched_job, queue_node)
 251
 252 void amdgpu_job_stop_all_jobs_on_sched(struct drm_gpu_scheduler *sched)
 253 {
 254         struct drm_sched_job *s_job;
 255         struct drm_sched_entity *s_entity = NULL;
 256         int i;
 257
 258         /* Signal all jobs not yet scheduled */
 259         for (i = DRM_SCHED_PRIORITY_MAX - 1; i >= DRM_SCHED_PRIORITY_MIN; i--) {
 260                 struct drm_sched_rq *rq = &sched->sched_rq[i];
 261
 262                 if (!rq)
 263                         continue;
 264
 265                 spin_lock(&rq->lock);
 266                 list_for_each_entry(s_entity, &rq->entities, list) {
 267                         while ((s_job = to_drm_sched_job(spsc_queue_pop(&s_entity->job_queue)))) {
 268                                 struct drm_sched_fence *s_fence = s_job->s_fence;
 269
 270                                 dma_fence_signal(&s_fence->scheduled);
 271                                 dma_fence_set_error(&s_fence->finished, -EHWPOISON);
 272                                 dma_fence_signal(&s_fence->finished);
 273                         }
 274                 }
 275                 spin_unlock(&rq->lock);
 276         }
 277
 278         /* Signal all jobs already scheduled to HW */
 279         list_for_each_entry(s_job, &sched->ring_mirror_list, node) {
 280                 struct drm_sched_fence *s_fence = s_job->s_fence;
 281
 282                 dma_fence_set_error(&s_fence->finished, -EHWPOISON);
 283                 dma_fence_signal(&s_fence->finished);
 284         }
 285 }
 286
 287 const struct drm_sched_backend_ops amdgpu_sched_ops = {
 288         .dependency = amdgpu_job_dependency,
 289         .run_job = amdgpu_job_run,
 290         .timedout_job = amdgpu_job_timedout,
 291         .free_job = amdgpu_job_free_cb
 292 };