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 #include <drm/drmP.h>
  28 #include "amdgpu.h"
  29 #include "amdgpu_trace.h"
  30
  31 static void amdgpu_job_timedout(struct amd_sched_job *s_job)
  32 {
  33         struct amdgpu_job *job = container_of(s_job, struct amdgpu_job, base);
  34
  35         DRM_ERROR("ring %s timeout, last signaled seq=%u, last emitted seq=%u\n",
  36                   job->base.sched->name,
  37                   atomic_read(&job->ring->fence_drv.last_seq),
  38                   job->ring->fence_drv.sync_seq);
  39
  40         amdgpu_gpu_recover(job->adev, job);
  41 }
  42
  43 int amdgpu_job_alloc(struct amdgpu_device *adev, unsigned num_ibs,
  44                      struct amdgpu_job **job, struct amdgpu_vm *vm)
  45 {
  46         size_t size = sizeof(struct amdgpu_job);
  47
  48         if (num_ibs == 0)
  49                 return -EINVAL;
  50
  51         size += sizeof(struct amdgpu_ib) * num_ibs;
  52
  53         *job = kzalloc(size, GFP_KERNEL);
  54         if (!*job)
  55                 return -ENOMEM;
  56
  57         (*job)->adev = adev;
  58         (*job)->vm = vm;
  59         (*job)->ibs = (void *)&(*job)[1];
  60         (*job)->num_ibs = num_ibs;
  61
  62         amdgpu_sync_create(&(*job)->sync);
  63         amdgpu_sync_create(&(*job)->dep_sync);
  64         amdgpu_sync_create(&(*job)->sched_sync);
  65         (*job)->vram_lost_counter = atomic_read(&adev->vram_lost_counter);
  66
  67         return 0;
  68 }
  69
  70 int amdgpu_job_alloc_with_ib(struct amdgpu_device *adev, unsigned size,
  71                              struct amdgpu_job **job)
  72 {
  73         int r;
  74
  75         r = amdgpu_job_alloc(adev, 1, job, NULL);
  76         if (r)
  77                 return r;
  78
  79         r = amdgpu_ib_get(adev, NULL, size, &(*job)->ibs[0]);
  80         if (r)
  81                 kfree(*job);
  82         else
  83                 (*job)->vm_pd_addr = adev->gart.table_addr;
  84
  85         return r;
  86 }
  87
  88 void amdgpu_job_free_resources(struct amdgpu_job *job)
  89 {
  90         struct dma_fence *f;
  91         unsigned i;
  92
  93         /* use sched fence if available */
  94         f = job->base.s_fence ? &job->base.s_fence->finished : job->fence;
  95
  96         for (i = 0; i < job->num_ibs; ++i)
  97                 amdgpu_ib_free(job->adev, &job->ibs[i], f);
  98 }
  99
 100 static void amdgpu_job_free_cb(struct amd_sched_job *s_job)
 101 {
 102         struct amdgpu_job *job = container_of(s_job, struct amdgpu_job, base);
 103
 104         amdgpu_ring_priority_put(job->ring, s_job->s_priority);
 105         dma_fence_put(job->fence);
 106         amdgpu_sync_free(&job->sync);
 107         amdgpu_sync_free(&job->dep_sync);
 108         amdgpu_sync_free(&job->sched_sync);
 109         kfree(job);
 110 }
 111
 112 void amdgpu_job_free(struct amdgpu_job *job)
 113 {
 114         amdgpu_job_free_resources(job);
 115
 116         dma_fence_put(job->fence);
 117         amdgpu_sync_free(&job->sync);
 118         amdgpu_sync_free(&job->dep_sync);
 119         amdgpu_sync_free(&job->sched_sync);
 120         kfree(job);
 121 }
 122
 123 int amdgpu_job_submit(struct amdgpu_job *job, struct amdgpu_ring *ring,
 124                       struct amd_sched_entity *entity, void *owner,
 125                       struct dma_fence **f)
 126 {
 127         int r;
 128         job->ring = ring;
 129
 130         if (!f)
 131                 return -EINVAL;
 132
 133         r = amd_sched_job_init(&job->base, &ring->sched, entity, owner);
 134         if (r)
 135                 return r;
 136
 137         job->owner = owner;
 138         job->fence_ctx = entity->fence_context;
 139         *f = dma_fence_get(&job->base.s_fence->finished);
 140         amdgpu_job_free_resources(job);
 141         amdgpu_ring_priority_get(job->ring, job->base.s_priority);
 142         amd_sched_entity_push_job(&job->base, entity);
 143
 144         return 0;
 145 }
 146
 147 static struct dma_fence *amdgpu_job_dependency(struct amd_sched_job *sched_job,
 148                                                struct amd_sched_entity *s_entity)
 149 {
 150         struct amdgpu_job *job = to_amdgpu_job(sched_job);
 151         struct amdgpu_vm *vm = job->vm;
 152
 153         struct dma_fence *fence = amdgpu_sync_get_fence(&job->dep_sync);
 154         int r;
 155
 156         if (amd_sched_dependency_optimized(fence, s_entity)) {
 157                 r = amdgpu_sync_fence(job->adev, &job->sched_sync, fence);
 158                 if (r)
 159                         DRM_ERROR("Error adding fence to sync (%d)\n", r);
 160         }
 161         if (!fence)
 162                 fence = amdgpu_sync_get_fence(&job->sync);
 163         while (fence == NULL && vm && !job->vm_id) {
 164                 struct amdgpu_ring *ring = job->ring;
 165
 166                 r = amdgpu_vm_grab_id(vm, ring, &job->sync,
 167                                       &job->base.s_fence->finished,
 168                                       job);
 169                 if (r)
 170                         DRM_ERROR("Error getting VM ID (%d)\n", r);
 171
 172                 fence = amdgpu_sync_get_fence(&job->sync);
 173         }
 174
 175         return fence;
 176 }
 177
 178 static struct dma_fence *amdgpu_job_run(struct amd_sched_job *sched_job)
 179 {
 180         struct dma_fence *fence = NULL, *finished;
 181         struct amdgpu_device *adev;
 182         struct amdgpu_job *job;
 183         int r;
 184
 185         if (!sched_job) {
 186                 DRM_ERROR("job is null\n");
 187                 return NULL;
 188         }
 189         job = to_amdgpu_job(sched_job);
 190         finished = &job->base.s_fence->finished;
 191         adev = job->adev;
 192
 193         BUG_ON(amdgpu_sync_peek_fence(&job->sync, NULL));
 194
 195         trace_amdgpu_sched_run_job(job);
 196
 197         if (job->vram_lost_counter != atomic_read(&adev->vram_lost_counter))
 198                 dma_fence_set_error(finished, -ECANCELED);/* skip IB as well if VRAM lost */
 199
 200         if (finished->error < 0) {
 201                 DRM_INFO("Skip scheduling IBs!\n");
 202         } else {
 203                 r = amdgpu_ib_schedule(job->ring, job->num_ibs, job->ibs, job,
 204                                        &fence);
 205                 if (r)
 206                         DRM_ERROR("Error scheduling IBs (%d)\n", r);
 207         }
 208         /* if gpu reset, hw fence will be replaced here */
 209         dma_fence_put(job->fence);
 210         job->fence = dma_fence_get(fence);
 211
 212         amdgpu_job_free_resources(job);
 213         return fence;
 214 }
 215
 216 const struct amd_sched_backend_ops amdgpu_sched_ops = {
 217         .dependency = amdgpu_job_dependency,
 218         .run_job = amdgpu_job_run,
 219         .timedout_job = amdgpu_job_timedout,
 220         .free_job = amdgpu_job_free_cb
 221 };