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_free_handler(struct work_struct *ws)
  32 {
  33         struct amdgpu_job *job = container_of(ws, struct amdgpu_job, base.work_free_job);
  34         amd_sched_job_put(&job->base);
  35 }
  36
  37 void amdgpu_job_timeout_func(struct work_struct *work)
  38 {
  39         struct amdgpu_job *job = container_of(work, struct amdgpu_job, base.work_tdr.work);
  40         DRM_ERROR("ring %s timeout, last signaled seq=%u, last emitted seq=%u\n",
  41                                 job->base.sched->name,
  42                                 (uint32_t)atomic_read(&job->ring->fence_drv.last_seq),
  43                                 job->ring->fence_drv.sync_seq);
  44
  45         amd_sched_job_put(&job->base);
  46 }
  47
  48 int amdgpu_job_alloc(struct amdgpu_device *adev, unsigned num_ibs,
  49                      struct amdgpu_job **job, struct amdgpu_vm *vm)
  50 {
  51         size_t size = sizeof(struct amdgpu_job);
  52
  53         if (num_ibs == 0)
  54                 return -EINVAL;
  55
  56         size += sizeof(struct amdgpu_ib) * num_ibs;
  57
  58         *job = kzalloc(size, GFP_KERNEL);
  59         if (!*job)
  60                 return -ENOMEM;
  61
  62         (*job)->adev = adev;
  63         (*job)->vm = vm;
  64         (*job)->ibs = (void *)&(*job)[1];
  65         (*job)->num_ibs = num_ibs;
  66         INIT_WORK(&(*job)->base.work_free_job, amdgpu_job_free_handler);
  67
  68         amdgpu_sync_create(&(*job)->sync);
  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
  86         return r;
  87 }
  88
  89 void amdgpu_job_free(struct amdgpu_job *job)
  90 {
  91         unsigned i;
  92         struct fence *f;
  93         /* use sched fence if available */
  94         f = (job->base.s_fence)? &job->base.s_fence->base : job->fence;
  95
  96         for (i = 0; i < job->num_ibs; ++i)
  97                 amdgpu_sa_bo_free(job->adev, &job->ibs[i].sa_bo, f);
  98         fence_put(job->fence);
  99
 100         amdgpu_bo_unref(&job->uf_bo);
 101         amdgpu_sync_free(&job->sync);
 102
 103         if (!job->base.use_sched)
 104                 kfree(job);
 105 }
 106
 107 void amdgpu_job_free_func(struct kref *refcount)
 108 {
 109         struct amdgpu_job *job = container_of(refcount, struct amdgpu_job, base.refcount);
 110         kfree(job);
 111 }
 112
 113 int amdgpu_job_submit(struct amdgpu_job *job, struct amdgpu_ring *ring,
 114                       struct amd_sched_entity *entity, void *owner,
 115                       struct fence **f)
 116 {
 117         struct fence *fence;
 118         int r;
 119         job->ring = ring;
 120
 121         if (!f)
 122                 return -EINVAL;
 123
 124         r = amd_sched_job_init(&job->base, &ring->sched,
 125                                entity, amdgpu_job_timeout_func,
 126                                amdgpu_job_free_func, owner, &fence);
 127         if (r)
 128                 return r;
 129
 130         job->owner = owner;
 131         job->ctx = entity->fence_context;
 132         *f = fence_get(fence);
 133         amd_sched_entity_push_job(&job->base);
 134
 135         return 0;
 136 }
 137
 138 static struct fence *amdgpu_job_dependency(struct amd_sched_job *sched_job)
 139 {
 140         struct amdgpu_job *job = to_amdgpu_job(sched_job);
 141         struct amdgpu_vm *vm = job->vm;
 142
 143         struct fence *fence = amdgpu_sync_get_fence(&job->sync);
 144
 145         if (fence == NULL && vm && !job->vm_id) {
 146                 struct amdgpu_ring *ring = job->ring;
 147                 int r;
 148
 149                 r = amdgpu_vm_grab_id(vm, ring, &job->sync,
 150                                       &job->base.s_fence->base,
 151                                       &job->vm_id, &job->vm_pd_addr);
 152                 if (r)
 153                         DRM_ERROR("Error getting VM ID (%d)\n", r);
 154
 155                 fence = amdgpu_sync_get_fence(&job->sync);
 156         }
 157
 158         return fence;
 159 }
 160
 161 static struct fence *amdgpu_job_run(struct amd_sched_job *sched_job)
 162 {
 163         struct fence *fence = NULL;
 164         struct amdgpu_job *job;
 165         int r;
 166
 167         if (!sched_job) {
 168                 DRM_ERROR("job is null\n");
 169                 return NULL;
 170         }
 171         job = to_amdgpu_job(sched_job);
 172
 173         r = amdgpu_sync_wait(&job->sync);
 174         if (r) {
 175                 DRM_ERROR("failed to sync wait (%d)\n", r);
 176                 return NULL;
 177         }
 178
 179         trace_amdgpu_sched_run_job(job);
 180         r = amdgpu_ib_schedule(job->ring, job->num_ibs, job->ibs,
 181                                job->sync.last_vm_update, job, &fence);
 182         if (r) {
 183                 DRM_ERROR("Error scheduling IBs (%d)\n", r);
 184                 goto err;
 185         }
 186
 187 err:
 188         job->fence = fence;
 189         amdgpu_job_free(job);
 190         return fence;
 191 }
 192
 193 const struct amd_sched_backend_ops amdgpu_sched_ops = {
 194         .dependency = amdgpu_job_dependency,
 195         .run_job = amdgpu_job_run,
 196         .begin_job = amd_sched_job_begin,
 197         .finish_job = amd_sched_job_finish,
 198 };