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/*
* Copyright 2015 Advanced Micro Devices, Inc.
*
* Permission is hereby granted, free of charge, to any person obtaining a
* copy of this software and associated documentation files (the "Software"),
* to deal in the Software without restriction, including without limitation
* the rights to use, copy, modify, merge, publish, distribute, sublicense,
* and/or sell copies of the Software, and to permit persons to whom the
* Software is furnished to do so, subject to the following conditions:
*
* The above copyright notice and this permission notice shall be included in
* all copies or substantial portions of the Software.
*
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
* THE COPYRIGHT HOLDER(S) OR AUTHOR(S) BE LIABLE FOR ANY CLAIM, DAMAGES OR
* OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE,
* ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
* OTHER DEALINGS IN THE SOFTWARE.
*
*
*/
#include <linux/kthread.h>
#include <linux/wait.h>
#include <linux/sched.h>
#include <drm/drmP.h>
#include "amdgpu.h"
#include "amdgpu_trace.h"
static void amdgpu_job_free_handler(struct work_struct *ws)
{
struct amdgpu_job *job = container_of(ws, struct amdgpu_job, base.work_free_job);
amd_sched_job_put(&job->base);
}
void amdgpu_job_timeout_func(struct work_struct *work)
{
struct amdgpu_job *job = container_of(work, struct amdgpu_job, base.work_tdr.work);
DRM_ERROR("ring %s timeout, last signaled seq=%u, last emitted seq=%u\n",
job->base.sched->name,
(uint32_t)atomic_read(&job->ring->fence_drv.last_seq),
job->ring->fence_drv.sync_seq);
amd_sched_job_put(&job->base);
}
int amdgpu_job_alloc(struct amdgpu_device *adev, unsigned num_ibs,
struct amdgpu_job **job, struct amdgpu_vm *vm)
{
size_t size = sizeof(struct amdgpu_job);
if (num_ibs == 0)
return -EINVAL;
size += sizeof(struct amdgpu_ib) * num_ibs;
*job = kzalloc(size, GFP_KERNEL);
if (!*job)
return -ENOMEM;
(*job)->adev = adev;
(*job)->vm = vm;
(*job)->ibs = (void *)&(*job)[1];
(*job)->num_ibs = num_ibs;
INIT_WORK(&(*job)->base.work_free_job, amdgpu_job_free_handler);
amdgpu_sync_create(&(*job)->sync);
return 0;
}
int amdgpu_job_alloc_with_ib(struct amdgpu_device *adev, unsigned size,
struct amdgpu_job **job)
{
int r;
r = amdgpu_job_alloc(adev, 1, job, NULL);
if (r)
return r;
r = amdgpu_ib_get(adev, NULL, size, &(*job)->ibs[0]);
if (r)
kfree(*job);
return r;
}
void amdgpu_job_free(struct amdgpu_job *job)
{
unsigned i;
struct fence *f;
/* use sched fence if available */
f = (job->base.s_fence)? &job->base.s_fence->base : job->fence;
for (i = 0; i < job->num_ibs; ++i)
amdgpu_sa_bo_free(job->adev, &job->ibs[i].sa_bo, f);
fence_put(job->fence);
amdgpu_bo_unref(&job->uf_bo);
amdgpu_sync_free(&job->sync);
if (!job->base.use_sched)
kfree(job);
}
void amdgpu_job_free_func(struct kref *refcount)
{
struct amdgpu_job *job = container_of(refcount, struct amdgpu_job, base.refcount);
kfree(job);
}
int amdgpu_job_submit(struct amdgpu_job *job, struct amdgpu_ring *ring,
struct amd_sched_entity *entity, void *owner,
struct fence **f)
{
struct fence *fence;
int r;
job->ring = ring;
if (!f)
return -EINVAL;
r = amd_sched_job_init(&job->base, &ring->sched,
entity, amdgpu_job_timeout_func,
amdgpu_job_free_func, owner, &fence);
if (r)
return r;
job->owner = owner;
job->ctx = entity->fence_context;
*f = fence_get(fence);
amd_sched_entity_push_job(&job->base);
return 0;
}
static struct fence *amdgpu_job_dependency(struct amd_sched_job *sched_job)
{
struct amdgpu_job *job = to_amdgpu_job(sched_job);
struct amdgpu_vm *vm = job->vm;
struct fence *fence = amdgpu_sync_get_fence(&job->sync);
if (fence == NULL && vm && !job->vm_id) {
struct amdgpu_ring *ring = job->ring;
int r;
r = amdgpu_vm_grab_id(vm, ring, &job->sync,
&job->base.s_fence->base,
&job->vm_id, &job->vm_pd_addr);
if (r)
DRM_ERROR("Error getting VM ID (%d)\n", r);
fence = amdgpu_sync_get_fence(&job->sync);
}
return fence;
}
static struct fence *amdgpu_job_run(struct amd_sched_job *sched_job)
{
struct fence *fence = NULL;
struct amdgpu_job *job;
int r;
if (!sched_job) {
DRM_ERROR("job is null\n");
return NULL;
}
job = to_amdgpu_job(sched_job);
r = amdgpu_sync_wait(&job->sync);
if (r) {
DRM_ERROR("failed to sync wait (%d)\n", r);
return NULL;
}
trace_amdgpu_sched_run_job(job);
r = amdgpu_ib_schedule(job->ring, job->num_ibs, job->ibs,
job->sync.last_vm_update, job, &fence);
if (r) {
DRM_ERROR("Error scheduling IBs (%d)\n", r);
goto err;
}
err:
job->fence = fence;
amdgpu_job_free(job);
return fence;
}
const struct amd_sched_backend_ops amdgpu_sched_ops = {
.dependency = amdgpu_job_dependency,
.run_job = amdgpu_job_run,
.begin_job = amd_sched_job_begin,
.finish_job = amd_sched_job_finish,
};
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