linux_dsm_epyc7002/drivers/gpu/drm/amd/amdgpu/amdgpu_job.c
Andrey Grodzovsky 7c6e68c777 drm/amdgpu: Avoid HW GPU reset for RAS.
Problem:
Under certain conditions, when some IP bocks take a RAS error,
we can get into a situation where a GPU reset is not possible
due to issues in RAS in SMU/PSP.

Temporary fix until proper solution in PSP/SMU is ready:
When uncorrectable error happens the DF will unconditionally
broadcast error event packets to all its clients/slave upon
receiving fatal error event and freeze all its outbound queues,
err_event_athub interrupt  will be triggered.
In such case and we use this interrupt
to issue GPU reset. THe GPU reset code is modified for such case to avoid HW
reset, only stops schedulers, deatches all in progress and not yet scheduled
job's fences, set error code on them and signals.
Also reject any new incoming job submissions from user space.
All this is done to notify the applications of the problem.

v2:
Extract amdgpu_amdkfd_pre/post_reset from amdgpu_device_lock/unlock_adev
Move amdgpu_job_stop_all_jobs_on_sched to amdgpu_job.c
Remove print param from amdgpu_ras_query_error_count

v3:
Update based on prevoius bug fixing patch to properly call amdgpu_amdkfd_pre_reset
for other XGMI hive memebers.

Signed-off-by: Andrey Grodzovsky <andrey.grodzovsky@amd.com>
Acked-by: Felix Kuehling <Felix.Kuehling@amd.com>
Reviewed-by: Hawking Zhang <Hawking.Zhang@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
2019-09-13 17:41:05 -05:00

293 lines
7.9 KiB
C

/*
* 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 "amdgpu.h"
#include "amdgpu_trace.h"
static void amdgpu_job_timedout(struct drm_sched_job *s_job)
{
struct amdgpu_ring *ring = to_amdgpu_ring(s_job->sched);
struct amdgpu_job *job = to_amdgpu_job(s_job);
struct amdgpu_task_info ti;
memset(&ti, 0, sizeof(struct amdgpu_task_info));
if (amdgpu_ring_soft_recovery(ring, job->vmid, s_job->s_fence->parent)) {
DRM_ERROR("ring %s timeout, but soft recovered\n",
s_job->sched->name);
return;
}
amdgpu_vm_get_task_info(ring->adev, job->pasid, &ti);
DRM_ERROR("ring %s timeout, signaled seq=%u, emitted seq=%u\n",
job->base.sched->name, atomic_read(&ring->fence_drv.last_seq),
ring->fence_drv.sync_seq);
DRM_ERROR("Process information: process %s pid %d thread %s pid %d\n",
ti.process_name, ti.tgid, ti.task_name, ti.pid);
if (amdgpu_device_should_recover_gpu(ring->adev))
amdgpu_device_gpu_recover(ring->adev, job);
else
drm_sched_suspend_timeout(&ring->sched);
}
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;
/*
* Initialize the scheduler to at least some ring so that we always
* have a pointer to adev.
*/
(*job)->base.sched = &adev->rings[0]->sched;
(*job)->vm = vm;
(*job)->ibs = (void *)&(*job)[1];
(*job)->num_ibs = num_ibs;
amdgpu_sync_create(&(*job)->sync);
amdgpu_sync_create(&(*job)->sched_sync);
(*job)->vram_lost_counter = atomic_read(&adev->vram_lost_counter);
(*job)->vm_pd_addr = AMDGPU_BO_INVALID_OFFSET;
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 amdgpu_ring *ring = to_amdgpu_ring(job->base.sched);
struct dma_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(ring->adev, &job->ibs[i], f);
}
static void amdgpu_job_free_cb(struct drm_sched_job *s_job)
{
struct amdgpu_ring *ring = to_amdgpu_ring(s_job->sched);
struct amdgpu_job *job = to_amdgpu_job(s_job);
drm_sched_job_cleanup(s_job);
amdgpu_ring_priority_put(ring, s_job->s_priority);
dma_fence_put(job->fence);
amdgpu_sync_free(&job->sync);
amdgpu_sync_free(&job->sched_sync);
kfree(job);
}
void amdgpu_job_free(struct amdgpu_job *job)
{
amdgpu_job_free_resources(job);
dma_fence_put(job->fence);
amdgpu_sync_free(&job->sync);
amdgpu_sync_free(&job->sched_sync);
kfree(job);
}
int amdgpu_job_submit(struct amdgpu_job *job, struct drm_sched_entity *entity,
void *owner, struct dma_fence **f)
{
enum drm_sched_priority priority;
struct amdgpu_ring *ring;
int r;
if (!f)
return -EINVAL;
r = drm_sched_job_init(&job->base, entity, owner);
if (r)
return r;
job->owner = owner;
*f = dma_fence_get(&job->base.s_fence->finished);
amdgpu_job_free_resources(job);
priority = job->base.s_priority;
drm_sched_entity_push_job(&job->base, entity);
ring = to_amdgpu_ring(entity->rq->sched);
amdgpu_ring_priority_get(ring, priority);
return 0;
}
int amdgpu_job_submit_direct(struct amdgpu_job *job, struct amdgpu_ring *ring,
struct dma_fence **fence)
{
int r;
job->base.sched = &ring->sched;
r = amdgpu_ib_schedule(ring, job->num_ibs, job->ibs, NULL, fence);
job->fence = dma_fence_get(*fence);
if (r)
return r;
amdgpu_job_free(job);
return 0;
}
static struct dma_fence *amdgpu_job_dependency(struct drm_sched_job *sched_job,
struct drm_sched_entity *s_entity)
{
struct amdgpu_ring *ring = to_amdgpu_ring(s_entity->rq->sched);
struct amdgpu_job *job = to_amdgpu_job(sched_job);
struct amdgpu_vm *vm = job->vm;
struct dma_fence *fence;
bool explicit = false;
int r;
fence = amdgpu_sync_get_fence(&job->sync, &explicit);
if (fence && explicit) {
if (drm_sched_dependency_optimized(fence, s_entity)) {
r = amdgpu_sync_fence(ring->adev, &job->sched_sync,
fence, false);
if (r)
DRM_ERROR("Error adding fence (%d)\n", r);
}
}
while (fence == NULL && vm && !job->vmid) {
r = amdgpu_vmid_grab(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, NULL);
}
return fence;
}
static struct dma_fence *amdgpu_job_run(struct drm_sched_job *sched_job)
{
struct amdgpu_ring *ring = to_amdgpu_ring(sched_job->sched);
struct dma_fence *fence = NULL, *finished;
struct amdgpu_job *job;
int r;
job = to_amdgpu_job(sched_job);
finished = &job->base.s_fence->finished;
BUG_ON(amdgpu_sync_peek_fence(&job->sync, NULL));
trace_amdgpu_sched_run_job(job);
if (job->vram_lost_counter != atomic_read(&ring->adev->vram_lost_counter))
dma_fence_set_error(finished, -ECANCELED);/* skip IB as well if VRAM lost */
if (finished->error < 0) {
DRM_INFO("Skip scheduling IBs!\n");
} else {
r = amdgpu_ib_schedule(ring, job->num_ibs, job->ibs, job,
&fence);
if (r)
DRM_ERROR("Error scheduling IBs (%d)\n", r);
}
/* if gpu reset, hw fence will be replaced here */
dma_fence_put(job->fence);
job->fence = dma_fence_get(fence);
amdgpu_job_free_resources(job);
return fence;
}
#define to_drm_sched_job(sched_job) \
container_of((sched_job), struct drm_sched_job, queue_node)
void amdgpu_job_stop_all_jobs_on_sched(struct drm_gpu_scheduler *sched)
{
struct drm_sched_job *s_job;
struct drm_sched_entity *s_entity = NULL;
int i;
/* Signal all jobs not yet scheduled */
for (i = DRM_SCHED_PRIORITY_MAX - 1; i >= DRM_SCHED_PRIORITY_MIN; i--) {
struct drm_sched_rq *rq = &sched->sched_rq[i];
if (!rq)
continue;
spin_lock(&rq->lock);
list_for_each_entry(s_entity, &rq->entities, list) {
while ((s_job = to_drm_sched_job(spsc_queue_pop(&s_entity->job_queue)))) {
struct drm_sched_fence *s_fence = s_job->s_fence;
dma_fence_signal(&s_fence->scheduled);
dma_fence_set_error(&s_fence->finished, -EHWPOISON);
dma_fence_signal(&s_fence->finished);
}
}
spin_unlock(&rq->lock);
}
/* Signal all jobs already scheduled to HW */
list_for_each_entry(s_job, &sched->ring_mirror_list, node) {
struct drm_sched_fence *s_fence = s_job->s_fence;
dma_fence_set_error(&s_fence->finished, -EHWPOISON);
dma_fence_signal(&s_fence->finished);
}
}
const struct drm_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
};