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         amdgpu_gpu_reset(job->adev);
  40 }
  41
  42 int amdgpu_job_alloc(struct amdgpu_device *adev, unsigned num_ibs,
  43                      struct amdgpu_job **job, struct amdgpu_vm *vm)
  44 {
  45         size_t size = sizeof(struct amdgpu_job);
  46
  47         if (num_ibs == 0)
  48                 return -EINVAL;
  49
  50         size += sizeof(struct amdgpu_ib) * num_ibs;
  51
  52         *job = kzalloc(size, GFP_KERNEL);
  53         if (!*job)
  54                 return -ENOMEM;
  55
  56         (*job)->adev = adev;
  57         (*job)->vm = vm;
  58         (*job)->ibs = (void *)&(*job)[1];
  59         (*job)->num_ibs = num_ibs;
  60
  61         amdgpu_sync_create(&(*job)->sync);
  62
  63         return 0;
  64 }
  65
  66 int amdgpu_job_alloc_with_ib(struct amdgpu_device *adev, unsigned size,
  67                              struct amdgpu_job **job)
  68 {
  69         int r;
  70
  71         r = amdgpu_job_alloc(adev, 1, job, NULL);
  72         if (r)
  73                 return r;
  74
  75         r = amdgpu_ib_get(adev, NULL, size, &(*job)->ibs[0]);
  76         if (r)
  77                 kfree(*job);
  78
  79         return r;
  80 }
  81
  82 void amdgpu_job_free_resources(struct amdgpu_job *job)
  83 {
  84         struct fence *f;
  85         unsigned i;
  86
  87         /* use sched fence if available */
  88         f = job->base.s_fence ? &job->base.s_fence->finished : job->fence;
  89
  90         for (i = 0; i < job->num_ibs; ++i)
  91                 amdgpu_ib_free(job->adev, &job->ibs[i], f);
  92 }
  93
  94 void amdgpu_job_free_cb(struct amd_sched_job *s_job)
  95 {
  96         struct amdgpu_job *job = container_of(s_job, struct amdgpu_job, base);
  97
  98         fence_put(job->fence);
  99         amdgpu_sync_free(&job->sync);
 100         kfree(job);
 101 }
 102
 103 void amdgpu_job_free(struct amdgpu_job *job)
 104 {
 105         amdgpu_job_free_resources(job);
 106
 107         fence_put(job->fence);
 108         amdgpu_sync_free(&job->sync);
 109         kfree(job);
 110 }
 111
 112 int amdgpu_job_submit(struct amdgpu_job *job, struct amdgpu_ring *ring,
 113                       struct amd_sched_entity *entity, void *owner,
 114                       struct fence **f)
 115 {
 116         int r;
 117         job->ring = ring;
 118
 119         if (!f)
 120                 return -EINVAL;
 121
 122         r = amd_sched_job_init(&job->base, &ring->sched, entity, owner);
 123         if (r)
 124                 return r;
 125
 126         job->owner = owner;
 127         job->ctx = entity->fence_context;
 128         *f = fence_get(&job->base.s_fence->finished);
 129         amdgpu_job_free_resources(job);
 130         amd_sched_entity_push_job(&job->base);
 131
 132         return 0;
 133 }
 134
 135 static struct fence *amdgpu_job_dependency(struct amd_sched_job *sched_job)
 136 {
 137         struct amdgpu_job *job = to_amdgpu_job(sched_job);
 138         struct amdgpu_vm *vm = job->vm;
 139
 140         struct fence *fence = amdgpu_sync_get_fence(&job->sync);
 141
 142         if (fence == NULL && vm && !job->vm_id) {
 143                 struct amdgpu_ring *ring = job->ring;
 144                 int r;
 145
 146                 r = amdgpu_vm_grab_id(vm, ring, &job->sync,
 147                                       &job->base.s_fence->finished,
 148                                       job);
 149                 if (r)
 150                         DRM_ERROR("Error getting VM ID (%d)\n", r);
 151
 152                 fence = amdgpu_sync_get_fence(&job->sync);
 153         }
 154
 155         return fence;
 156 }
 157
 158 static struct fence *amdgpu_job_run(struct amd_sched_job *sched_job)
 159 {
 160         struct fence *fence = NULL;
 161         struct amdgpu_job *job;
 162         int r;
 163
 164         if (!sched_job) {
 165                 DRM_ERROR("job is null\n");
 166                 return NULL;
 167         }
 168         job = to_amdgpu_job(sched_job);
 169
 170         BUG_ON(amdgpu_sync_peek_fence(&job->sync, NULL));
 171
 172         trace_amdgpu_sched_run_job(job);
 173         r = amdgpu_ib_schedule(job->ring, job->num_ibs, job->ibs,
 174                                job->sync.last_vm_update, job, &fence);
 175         if (r)
 176                 DRM_ERROR("Error scheduling IBs (%d)\n", r);
 177
 178         /* if gpu reset, hw fence will be replaced here */
 179         fence_put(job->fence);
 180         job->fence = fence_get(fence);
 181         amdgpu_job_free_resources(job);
 182         return fence;
 183 }
 184
 185 const struct amd_sched_backend_ops amdgpu_sched_ops = {
 186         .dependency = amdgpu_job_dependency,
 187         .run_job = amdgpu_job_run,
 188         .timedout_job = amdgpu_job_timedout,
 189         .free_job = amdgpu_job_free_cb
 190 };