| /* |
| * 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_timedout(struct amd_sched_job *s_job) |
| { |
| struct amdgpu_job *job = container_of(s_job, struct amdgpu_job, base); |
| |
| DRM_ERROR("ring %s timeout, last signaled seq=%u, last emitted seq=%u\n", |
| job->base.sched->name, |
| atomic_read(&job->ring->fence_drv.last_seq), |
| job->ring->fence_drv.sync_seq); |
| amdgpu_gpu_reset(job->adev); |
| } |
| |
| 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; |
| |
| 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_resources(struct amdgpu_job *job) |
| { |
| struct fence *f; |
| unsigned i; |
| |
| /* use sched fence if available */ |
| f = job->base.s_fence ? &job->base.s_fence->finished : job->fence; |
| |
| for (i = 0; i < job->num_ibs; ++i) |
| amdgpu_ib_free(job->adev, &job->ibs[i], f); |
| } |
| |
| void amdgpu_job_free_cb(struct amd_sched_job *s_job) |
| { |
| struct amdgpu_job *job = container_of(s_job, struct amdgpu_job, base); |
| |
| fence_put(job->fence); |
| amdgpu_sync_free(&job->sync); |
| kfree(job); |
| } |
| |
| void amdgpu_job_free(struct amdgpu_job *job) |
| { |
| amdgpu_job_free_resources(job); |
| |
| fence_put(job->fence); |
| amdgpu_sync_free(&job->sync); |
| kfree(job); |
| } |
| |
| int amdgpu_job_submit(struct amdgpu_job *job, struct amdgpu_ring *ring, |
| struct amd_sched_entity *entity, void *owner, |
| struct fence **f) |
| { |
| int r; |
| job->ring = ring; |
| |
| if (!f) |
| return -EINVAL; |
| |
| r = amd_sched_job_init(&job->base, &ring->sched, entity, owner); |
| if (r) |
| return r; |
| |
| job->owner = owner; |
| job->ctx = entity->fence_context; |
| *f = fence_get(&job->base.s_fence->finished); |
| amdgpu_job_free_resources(job); |
| 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->finished, |
| job); |
| 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); |
| |
| BUG_ON(amdgpu_sync_peek_fence(&job->sync, 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: |
| /* if gpu reset, hw fence will be replaced here */ |
| fence_put(job->fence); |
| job->fence = fence; |
| return fence; |
| } |
| |
| const struct amd_sched_backend_ops amdgpu_sched_ops = { |
| .dependency = amdgpu_job_dependency, |
| .run_job = amdgpu_job_run, |
| .timedout_job = amdgpu_job_timedout, |
| .free_job = amdgpu_job_free_cb |
| }; |