/*
* 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/drm_drv.h>
#include "amdgpu.h"
#include "amdgpu_trace.h"
#include "amdgpu_reset.h"
#include "amdgpu_dev_coredump.h"
#include "amdgpu_xgmi.h"
static void amdgpu_job_do_core_dump(struct amdgpu_device *adev,
struct amdgpu_job *job)
{
int i;
dev_info(adev->dev, "Dumping IP State\n");
for (i = 0; i < adev->num_ip_blocks; i++)
if (adev->ip_blocks[i].version->funcs->dump_ip_state)
adev->ip_blocks[i].version->funcs
->dump_ip_state((void *)adev);
dev_info(adev->dev, "Dumping IP State Completed\n");
amdgpu_coredump(adev, true, false, job);
}
static void amdgpu_job_core_dump(struct amdgpu_device *adev,
struct amdgpu_job *job)
{
struct list_head device_list, *device_list_handle = NULL;
struct amdgpu_device *tmp_adev = NULL;
struct amdgpu_hive_info *hive = NULL;
if (!amdgpu_sriov_vf(adev))
hive = amdgpu_get_xgmi_hive(adev);
if (hive)
mutex_lock(&hive->hive_lock);
/*
* Reuse the logic in amdgpu_device_gpu_recover() to build list of
* devices for code dump
*/
INIT_LIST_HEAD(&device_list);
if (!amdgpu_sriov_vf(adev) && (adev->gmc.xgmi.num_physical_nodes > 1) && hive) {
list_for_each_entry(tmp_adev, &hive->device_list, gmc.xgmi.head)
list_add_tail(&tmp_adev->reset_list, &device_list);
if (!list_is_first(&adev->reset_list, &device_list))
list_rotate_to_front(&adev->reset_list, &device_list);
device_list_handle = &device_list;
} else {
list_add_tail(&adev->reset_list, &device_list);
device_list_handle = &device_list;
}
/* Do the coredump for each device */
list_for_each_entry(tmp_adev, device_list_handle, reset_list)
amdgpu_job_do_core_dump(tmp_adev, job);
if (hive) {
mutex_unlock(&hive->hive_lock);
amdgpu_put_xgmi_hive(hive);
}
}
static enum drm_gpu_sched_stat 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;
struct amdgpu_device *adev = ring->adev;
int idx;
int r;
if (!drm_dev_enter(adev_to_drm(adev), &idx)) {
dev_info(adev->dev, "%s - device unplugged skipping recovery on scheduler:%s",
__func__, s_job->sched->name);
/* Effectively the job is aborted as the device is gone */
return DRM_GPU_SCHED_STAT_ENODEV;
}
adev->job_hang = true;
/*
* Do the coredump immediately after a job timeout to get a very
* close dump/snapshot/representation of GPU's current error status
* Skip it for SRIOV, since VF FLR will be triggered by host driver
* before job timeout
*/
if (!amdgpu_sriov_vf(adev))
amdgpu_job_core_dump(adev, job);
if (amdgpu_gpu_recovery &&
amdgpu_ring_soft_recovery(ring, job->vmid, s_job->s_fence->parent)) {
dev_err(adev->dev, "ring %s timeout, but soft recovered\n",
s_job->sched->name);
goto exit;
}
dev_err(adev->dev, "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);
ti = amdgpu_vm_get_task_info_pasid(ring->adev, job->pasid);
if (ti) {
dev_err(adev->dev,
"Process information: process %s pid %d thread %s pid %d\n",
ti->process_name, ti->tgid, ti->task_name, ti->pid);
amdgpu_vm_put_task_info(ti);
}
dma_fence_set_error(&s_job->s_fence->finished, -ETIME);
/* attempt a per ring reset */
if (amdgpu_gpu_recovery &&
ring->funcs->reset) {
/* stop the scheduler, but don't mess with the
* bad job yet because if ring reset fails
* we'll fall back to full GPU reset.
*/
drm_sched_wqueue_stop(&ring->sched);
r = amdgpu_ring_reset(ring, job->vmid);
if (!r) {
if (amdgpu_ring_sched_ready(ring))
drm_sched_stop(&ring->sched, s_job);
atomic_inc(&ring->adev->gpu_reset_counter);
amdgpu_fence_driver_force_completion(ring);
if (amdgpu_ring_sched_ready(ring))
drm_sched_start(&ring->sched);
goto exit;
}
}
if (amdgpu_device_should_recover_gpu(ring->adev)) {
struct amdgpu_reset_context reset_context;
memset(&reset_context, 0, sizeof(reset_context));
reset_context.method = AMD_RESET_METHOD_NONE;
reset_context.reset_req_dev = adev;
reset_context.src = AMDGPU_RESET_SRC_JOB;
clear_bit(AMDGPU_NEED_FULL_RESET, &reset_context.flags);
/*
* To avoid an unnecessary extra coredump, as we have already
* got the very close representation of GPU's error status
*/
set_bit(AMDGPU_SKIP_COREDUMP, &reset_context.flags);
r = amdgpu_device_gpu_recover(ring->adev, job, &reset_context);
if (r)
dev_err(adev->dev, "GPU Recovery Failed: %d\n", r);
} else {
drm_sched_suspend_timeout(&ring->sched);
if (amdgpu_sriov_vf(adev))
adev->virt.tdr_debug = true;
}
exit:
adev->job_hang = false;
drm_dev_exit(idx);
return DRM_GPU_SCHED_STAT_NOMINAL;
}
int amdgpu_job_alloc(struct amdgpu_device *adev, struct amdgpu_vm *vm,
struct drm_sched_entity *entity, void *owner,
unsigned int num_ibs, struct amdgpu_job **job)
{
if (num_ibs == 0)
return -EINVAL;
*job = kzalloc(struct_size(*job, ibs, num_ibs), 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;
amdgpu_sync_create(&(*job)->explicit_sync);
(*job)->generation = amdgpu_vm_generation(adev, vm);
(*job)->vm_pd_addr = AMDGPU_BO_INVALID_OFFSET;
if (!entity)
return 0;
return drm_sched_job_init(&(*job)->base, entity, 1, owner);
}
int amdgpu_job_alloc_with_ib(struct amdgpu_device *adev,
struct drm_sched_entity *entity, void *owner,
size_t size, enum amdgpu_ib_pool_type pool_type,
struct amdgpu_job **job)
{
int r;
r = amdgpu_job_alloc(adev, NULL, entity, owner, 1, job);
if (r)
return r;
(*job)->num_ibs = 1;
r = amdgpu_ib_get(adev, NULL, size, pool_type, &(*job)->ibs[0]);
if (r) {
if (entity)
drm_sched_job_cleanup(&(*job)->base);
kfree(*job);
}
return r;
}
void amdgpu_job_set_resources(struct amdgpu_job *job, struct amdgpu_bo *gds,
struct amdgpu_bo *gws, struct amdgpu_bo *oa)
{
if (gds) {
job->gds_base = amdgpu_bo_gpu_offset(gds) >> PAGE_SHIFT;
job->gds_size = amdgpu_bo_size(gds) >> PAGE_SHIFT;
}
if (gws) {
job->gws_base = amdgpu_bo_gpu_offset(gws) >> PAGE_SHIFT;
job->gws_size = amdgpu_bo_size(gws) >> PAGE_SHIFT;
}
if (oa) {
job->oa_base = amdgpu_bo_gpu_offset(oa) >> PAGE_SHIFT;
job->oa_size = amdgpu_bo_size(oa) >> PAGE_SHIFT;
}
}
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;
/* Check if any fences where initialized */
if (job->base.s_fence && job->base.s_fence->finished.ops)
f = &job->base.s_fence->finished;
else if (job->hw_fence.ops)
f = &job->hw_fence;
else
f = NULL;
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_job *job = to_amdgpu_job(s_job);
drm_sched_job_cleanup(s_job);
amdgpu_sync_free(&job->explicit_sync);
/* only put the hw fence if has embedded fence */
if (!job->hw_fence.ops)
kfree(job);
else
dma_fence_put(&job->hw_fence);
}
void amdgpu_job_set_gang_leader(struct amdgpu_job *job,
struct amdgpu_job *leader)
{
struct dma_fence *fence = &leader->base.s_fence->scheduled;
WARN_ON(job->gang_submit);
/*
* Don't add a reference when we are the gang leader to avoid circle
* dependency.
*/
if (job != leader)
dma_fence_get(fence);
job->gang_submit = fence;
}
void amdgpu_job_free(struct amdgpu_job *job)
{
if (job->base.entity)
drm_sched_job_cleanup(&job->base);
amdgpu_job_free_resources(job);
amdgpu_sync_free(&job->explicit_sync);
if (job->gang_submit != &job->base.s_fence->scheduled)
dma_fence_put(job->gang_submit);
if (!job->hw_fence.ops)
kfree(job);
else
dma_fence_put(&job->hw_fence);
}
struct dma_fence *amdgpu_job_submit(struct amdgpu_job *job)
{
struct dma_fence *f;
drm_sched_job_arm(&job->base);
f = dma_fence_get(&job->base.s_fence->finished);
amdgpu_job_free_resources(job);
drm_sched_entity_push_job(&job->base);
return f;
}
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, job, fence);
if (r)
return r;
amdgpu_job_free(job);
return 0;
}
static struct dma_fence *
amdgpu_job_prepare_job(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 dma_fence *fence = NULL;
int r;
r = drm_sched_entity_error(s_entity);
if (r)
goto error;
if (!fence && job->gang_submit)
fence = amdgpu_device_switch_gang(ring->adev, job->gang_submit);
while (!fence && job->vm && !job->vmid) {
r = amdgpu_vmid_grab(job->vm, ring, job, &fence);
if (r) {
dev_err(ring->adev->dev, "Error getting VM ID (%d)\n", r);
goto error;
}
}
return fence;
error:
dma_fence_set_error(&job->base.s_fence->finished, r);
return NULL;
}
static struct dma_fence *amdgpu_job_run(struct drm_sched_job *sched_job)
{
struct amdgpu_ring *ring = to_amdgpu_ring(sched_job->sched);
struct amdgpu_device *adev = ring->adev;
struct dma_fence *fence = NULL, *finished;
struct amdgpu_job *job;
int r = 0;
job = to_amdgpu_job(sched_job);
finished = &job->base.s_fence->finished;
trace_amdgpu_sched_run_job(job);
/* Skip job if VRAM is lost and never resubmit gangs */
if (job->generation != amdgpu_vm_generation(adev, job->vm) ||
(job->job_run_counter && job->gang_submit))
dma_fence_set_error(finished, -ECANCELED);
if (finished->error < 0) {
dev_dbg(adev->dev, "Skip scheduling IBs in ring(%s)",
ring->name);
} else {
r = amdgpu_ib_schedule(ring, job->num_ibs, job->ibs, job,
&fence);
if (r)
dev_err(adev->dev,
"Error scheduling IBs (%d) in ring(%s)", r,
ring->name);
}
job->job_run_counter++;
amdgpu_job_free_resources(job);
fence = r ? ERR_PTR(r) : fence;
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_KERNEL; i < sched->num_rqs; i++) {
struct drm_sched_rq *rq = sched->sched_rq[i];
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->pending_list, list) {
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 = {
.prepare_job = amdgpu_job_prepare_job,
.run_job = amdgpu_job_run,
.timedout_job = amdgpu_job_timedout,
.free_job = amdgpu_job_free_cb
};
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