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         if (amdgpu_sriov_vf(job->adev))
  41                 amdgpu_sriov_gpu_reset(job->adev, job);
  42         else
  43                 amdgpu_gpu_reset(job->adev);
  44 }
  45
  46 int amdgpu_job_alloc(struct amdgpu_device *adev, unsigned num_ibs,
  47                      struct amdgpu_job **job, struct amdgpu_vm *vm)
  48 {
  49         size_t size = sizeof(struct amdgpu_job);
  50
  51         if (num_ibs == 0)
  52                 return -EINVAL;
  53
  54         size += sizeof(struct amdgpu_ib) * num_ibs;
  55
  56         *job = kzalloc(size, GFP_KERNEL);
  57         if (!*job)
  58                 return -ENOMEM;
  59
  60         (*job)->adev = adev;
  61         (*job)->vm = vm;
  62         (*job)->ibs = (void *)&(*job)[1];
  63         (*job)->num_ibs = num_ibs;
  64
  65         amdgpu_sync_create(&(*job)->sync);
  66         amdgpu_sync_create(&(*job)->dep_sync);
  67         amdgpu_sync_create(&(*job)->sched_sync);
  68         (*job)->vram_lost_counter = atomic_read(&adev->vram_lost_counter);
  69
  70         return 0;
  71 }
  72
  73 int amdgpu_job_alloc_with_ib(struct amdgpu_device *adev, unsigned size,
  74                              struct amdgpu_job **job)
  75 {
  76         int r;
  77
  78         r = amdgpu_job_alloc(adev, 1, job, NULL);
  79         if (r)
  80                 return r;
  81
  82         r = amdgpu_ib_get(adev, NULL, size, &(*job)->ibs[0]);
  83         if (r)
  84                 kfree(*job);
  85         else
  86                 (*job)->vm_pd_addr = adev->gart.table_addr;
  87
  88         return r;
  89 }
  90
  91 void amdgpu_job_free_resources(struct amdgpu_job *job)
  92 {
  93         struct dma_fence *f;
  94         unsigned i;
  95
  96         /* use sched fence if available */
  97         f = job->base.s_fence ? &job->base.s_fence->finished : job->fence;
  98
  99         for (i = 0; i < job->num_ibs; ++i)
 100                 amdgpu_ib_free(job->adev, &job->ibs[i], f);
 101 }
 102
 103 static void amdgpu_job_free_cb(struct amd_sched_job *s_job)
 104 {
 105         struct amdgpu_job *job = container_of(s_job, struct amdgpu_job, base);
 106
 107         amdgpu_ring_priority_put(job->ring, amd_sched_get_job_priority(s_job));
 108         dma_fence_put(job->fence);
 109         amdgpu_sync_free(&job->sync);
 110         amdgpu_sync_free(&job->dep_sync);
 111         amdgpu_sync_free(&job->sched_sync);
 112         kfree(job);
 113 }
 114
 115 void amdgpu_job_free(struct amdgpu_job *job)
 116 {
 117         amdgpu_job_free_resources(job);
 118
 119         dma_fence_put(job->fence);
 120         amdgpu_sync_free(&job->sync);
 121         amdgpu_sync_free(&job->dep_sync);
 122         amdgpu_sync_free(&job->sched_sync);
 123         kfree(job);
 124 }
 125
 126 int amdgpu_job_submit(struct amdgpu_job *job, struct amdgpu_ring *ring,
 127                       struct amd_sched_entity *entity, void *owner,
 128                       struct dma_fence **f)
 129 {
 130         int r;
 131         job->ring = ring;
 132
 133         if (!f)
 134                 return -EINVAL;
 135
 136         r = amd_sched_job_init(&job->base, &ring->sched, entity, owner);
 137         if (r)
 138                 return r;
 139
 140         job->owner = owner;
 141         job->fence_ctx = entity->fence_context;
 142         *f = dma_fence_get(&job->base.s_fence->finished);
 143         amdgpu_job_free_resources(job);
 144         amdgpu_ring_priority_get(job->ring,
 145                                  amd_sched_get_job_priority(&job->base));
 146         amd_sched_entity_push_job(&job->base);
 147
 148         return 0;
 149 }
 150
 151 static struct dma_fence *amdgpu_job_dependency(struct amd_sched_job *sched_job)
 152 {
 153         struct amdgpu_job *job = to_amdgpu_job(sched_job);
 154         struct amdgpu_vm *vm = job->vm;
 155
 156         struct dma_fence *fence = amdgpu_sync_get_fence(&job->dep_sync);
 157         int r;
 158
 159         if (amd_sched_dependency_optimized(fence, sched_job->s_entity)) {
 160                 r = amdgpu_sync_fence(job->adev, &job->sched_sync, fence);
 161                 if (r)
 162                         DRM_ERROR("Error adding fence to sync (%d)\n", r);
 163         }
 164         if (!fence)
 165                 fence = amdgpu_sync_get_fence(&job->sync);
 166         while (fence == NULL && vm && !job->vm_id) {
 167                 struct amdgpu_ring *ring = job->ring;
 168
 169                 r = amdgpu_vm_grab_id(vm, ring, &job->sync,
 170                                       &job->base.s_fence->finished,
 171                                       job);
 172                 if (r)
 173                         DRM_ERROR("Error getting VM ID (%d)\n", r);
 174
 175                 fence = amdgpu_sync_get_fence(&job->sync);
 176         }
 177
 178         return fence;
 179 }
 180
 181 static struct dma_fence *amdgpu_job_run(struct amd_sched_job *sched_job)
 182 {
 183         struct dma_fence *fence = NULL;
 184         struct amdgpu_device *adev;
 185         struct amdgpu_job *job;
 186         int r;
 187
 188         if (!sched_job) {
 189                 DRM_ERROR("job is null\n");
 190                 return NULL;
 191         }
 192         job = to_amdgpu_job(sched_job);
 193         adev = job->adev;
 194
 195         BUG_ON(amdgpu_sync_peek_fence(&job->sync, NULL));
 196
 197         trace_amdgpu_sched_run_job(job);
 198         /* skip ib schedule when vram is lost */
 199         if (job->vram_lost_counter != atomic_read(&adev->vram_lost_counter)) {
 200                 dma_fence_set_error(&job->base.s_fence->finished, -ECANCELED);
 201                 DRM_ERROR("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 };