LXR linux/drivers/gpu/drm/amd/amdgpu/amdgpu

   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
  31static struct fence *amdgpu_sched_dependency(struct amd_sched_job *sched_job)
  32{
  33        struct amdgpu_job *job = to_amdgpu_job(sched_job);
  34        return amdgpu_sync_get_fence(&job->ibs->sync);
  35}
  36
  37static struct fence *amdgpu_sched_run_job(struct amd_sched_job *sched_job)
  38{
  39        struct amdgpu_fence *fence = NULL;
  40        struct amdgpu_job *job;
  41        int r;
  42
  43        if (!sched_job) {
  44                DRM_ERROR("job is null\n");
  45                return NULL;
  46        }
  47        job = to_amdgpu_job(sched_job);
  48        trace_amdgpu_sched_run_job(job);
  49        r = amdgpu_ib_schedule(job->adev, job->num_ibs, job->ibs, job->owner);
  50        if (r) {
  51                DRM_ERROR("Error scheduling IBs (%d)\n", r);
  52                goto err;
  53        }
  54
  55        fence = job->ibs[job->num_ibs - 1].fence;
  56        fence_get(&fence->base);
  57
  58err:
  59        if (job->free_job)
  60                job->free_job(job);
  61
  62        kfree(job);
  63        return fence ? &fence->base : NULL;
  64}
  65
  66struct amd_sched_backend_ops amdgpu_sched_ops = {
  67        .dependency = amdgpu_sched_dependency,
  68        .run_job = amdgpu_sched_run_job,
  69};
  70
  71int amdgpu_sched_ib_submit_kernel_helper(struct amdgpu_device *adev,
  72                                         struct amdgpu_ring *ring,
  73                                         struct amdgpu_ib *ibs,
  74                                         unsigned num_ibs,
  75                                         int (*free_job)(struct amdgpu_job *),
  76                                         void *owner,
  77                                         struct fence **f)
  78{
  79        int r = 0;
  80        if (amdgpu_enable_scheduler) {
  81                struct amdgpu_job *job =
  82                        kzalloc(sizeof(struct amdgpu_job), GFP_KERNEL);
  83                if (!job)
  84                        return -ENOMEM;
  85                job->base.sched = &ring->sched;
  86                job->base.s_entity = &adev->kernel_ctx.rings[ring->idx].entity;
  87                job->base.s_fence = amd_sched_fence_create(job->base.s_entity, owner);
  88                if (!job->base.s_fence) {
  89                        kfree(job);
  90                        return -ENOMEM;
  91                }
  92                *f = fence_get(&job->base.s_fence->base);
  93
  94                job->adev = adev;
  95                job->ibs = ibs;
  96                job->num_ibs = num_ibs;
  97                job->owner = owner;
  98                job->free_job = free_job;
  99                amd_sched_entity_push_job(&job->base);
 100        } else {
 101                r = amdgpu_ib_schedule(adev, num_ibs, ibs, owner);
 102                if (r)
 103                        return r;
 104                *f = fence_get(&ibs[num_ibs - 1].fence->base);
 105        }
 106
 107        return 0;
 108}
 109