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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
28#include <drm/drm_drv.h>
29
30#include "amdgpu.h"
31#include "amdgpu_trace.h"
32#include "amdgpu_reset.h"
33
34static enum drm_gpu_sched_stat amdgpu_job_timedout(struct drm_sched_job *s_job)
35{
36 struct amdgpu_ring *ring = to_amdgpu_ring(s_job->sched);
37 struct amdgpu_job *job = to_amdgpu_job(s_job);
38 struct amdgpu_task_info *ti;
39 struct amdgpu_device *adev = ring->adev;
40 int idx;
41 int r;
42
43 if (!drm_dev_enter(adev_to_drm(adev), &idx)) {
44 DRM_INFO("%s - device unplugged skipping recovery on scheduler:%s",
45 __func__, s_job->sched->name);
46
47 /* Effectively the job is aborted as the device is gone */
48 return DRM_GPU_SCHED_STAT_ENODEV;
49 }
50
51
52 adev->job_hang = true;
53
54 if (amdgpu_gpu_recovery &&
55 amdgpu_ring_soft_recovery(ring, job->vmid, s_job->s_fence->parent)) {
56 DRM_ERROR("ring %s timeout, but soft recovered\n",
57 s_job->sched->name);
58 goto exit;
59 }
60
61 DRM_ERROR("ring %s timeout, signaled seq=%u, emitted seq=%u\n",
62 job->base.sched->name, atomic_read(&ring->fence_drv.last_seq),
63 ring->fence_drv.sync_seq);
64
65 ti = amdgpu_vm_get_task_info_pasid(ring->adev, job->pasid);
66 if (ti) {
67 DRM_ERROR("Process information: process %s pid %d thread %s pid %d\n",
68 ti->process_name, ti->tgid, ti->task_name, ti->pid);
69 amdgpu_vm_put_task_info(ti);
70 }
71
72 dma_fence_set_error(&s_job->s_fence->finished, -ETIME);
73
74 if (amdgpu_device_should_recover_gpu(ring->adev)) {
75 struct amdgpu_reset_context reset_context;
76 memset(&reset_context, 0, sizeof(reset_context));
77
78 reset_context.method = AMD_RESET_METHOD_NONE;
79 reset_context.reset_req_dev = adev;
80 clear_bit(AMDGPU_NEED_FULL_RESET, &reset_context.flags);
81
82 r = amdgpu_device_gpu_recover(ring->adev, job, &reset_context);
83 if (r)
84 DRM_ERROR("GPU Recovery Failed: %d\n", r);
85 } else {
86 drm_sched_suspend_timeout(&ring->sched);
87 if (amdgpu_sriov_vf(adev))
88 adev->virt.tdr_debug = true;
89 }
90
91exit:
92 adev->job_hang = false;
93 drm_dev_exit(idx);
94 return DRM_GPU_SCHED_STAT_NOMINAL;
95}
96
97int amdgpu_job_alloc(struct amdgpu_device *adev, struct amdgpu_vm *vm,
98 struct drm_sched_entity *entity, void *owner,
99 unsigned int num_ibs, struct amdgpu_job **job)
100{
101 if (num_ibs == 0)
102 return -EINVAL;
103
104 *job = kzalloc(struct_size(*job, ibs, num_ibs), GFP_KERNEL);
105 if (!*job)
106 return -ENOMEM;
107
108 /*
109 * Initialize the scheduler to at least some ring so that we always
110 * have a pointer to adev.
111 */
112 (*job)->base.sched = &adev->rings[0]->sched;
113 (*job)->vm = vm;
114
115 amdgpu_sync_create(&(*job)->explicit_sync);
116 (*job)->generation = amdgpu_vm_generation(adev, vm);
117 (*job)->vm_pd_addr = AMDGPU_BO_INVALID_OFFSET;
118
119 if (!entity)
120 return 0;
121
122 return drm_sched_job_init(&(*job)->base, entity, 1, owner);
123}
124
125int amdgpu_job_alloc_with_ib(struct amdgpu_device *adev,
126 struct drm_sched_entity *entity, void *owner,
127 size_t size, enum amdgpu_ib_pool_type pool_type,
128 struct amdgpu_job **job)
129{
130 int r;
131
132 r = amdgpu_job_alloc(adev, NULL, entity, owner, 1, job);
133 if (r)
134 return r;
135
136 (*job)->num_ibs = 1;
137 r = amdgpu_ib_get(adev, NULL, size, pool_type, &(*job)->ibs[0]);
138 if (r) {
139 if (entity)
140 drm_sched_job_cleanup(&(*job)->base);
141 kfree(*job);
142 }
143
144 return r;
145}
146
147void amdgpu_job_set_resources(struct amdgpu_job *job, struct amdgpu_bo *gds,
148 struct amdgpu_bo *gws, struct amdgpu_bo *oa)
149{
150 if (gds) {
151 job->gds_base = amdgpu_bo_gpu_offset(gds) >> PAGE_SHIFT;
152 job->gds_size = amdgpu_bo_size(gds) >> PAGE_SHIFT;
153 }
154 if (gws) {
155 job->gws_base = amdgpu_bo_gpu_offset(gws) >> PAGE_SHIFT;
156 job->gws_size = amdgpu_bo_size(gws) >> PAGE_SHIFT;
157 }
158 if (oa) {
159 job->oa_base = amdgpu_bo_gpu_offset(oa) >> PAGE_SHIFT;
160 job->oa_size = amdgpu_bo_size(oa) >> PAGE_SHIFT;
161 }
162}
163
164void amdgpu_job_free_resources(struct amdgpu_job *job)
165{
166 struct amdgpu_ring *ring = to_amdgpu_ring(job->base.sched);
167 struct dma_fence *f;
168 unsigned i;
169
170 /* Check if any fences where initialized */
171 if (job->base.s_fence && job->base.s_fence->finished.ops)
172 f = &job->base.s_fence->finished;
173 else if (job->hw_fence.ops)
174 f = &job->hw_fence;
175 else
176 f = NULL;
177
178 for (i = 0; i < job->num_ibs; ++i)
179 amdgpu_ib_free(ring->adev, &job->ibs[i], f);
180}
181
182static void amdgpu_job_free_cb(struct drm_sched_job *s_job)
183{
184 struct amdgpu_job *job = to_amdgpu_job(s_job);
185
186 drm_sched_job_cleanup(s_job);
187
188 amdgpu_sync_free(&job->explicit_sync);
189
190 /* only put the hw fence if has embedded fence */
191 if (!job->hw_fence.ops)
192 kfree(job);
193 else
194 dma_fence_put(&job->hw_fence);
195}
196
197void amdgpu_job_set_gang_leader(struct amdgpu_job *job,
198 struct amdgpu_job *leader)
199{
200 struct dma_fence *fence = &leader->base.s_fence->scheduled;
201
202 WARN_ON(job->gang_submit);
203
204 /*
205 * Don't add a reference when we are the gang leader to avoid circle
206 * dependency.
207 */
208 if (job != leader)
209 dma_fence_get(fence);
210 job->gang_submit = fence;
211}
212
213void amdgpu_job_free(struct amdgpu_job *job)
214{
215 if (job->base.entity)
216 drm_sched_job_cleanup(&job->base);
217
218 amdgpu_job_free_resources(job);
219 amdgpu_sync_free(&job->explicit_sync);
220 if (job->gang_submit != &job->base.s_fence->scheduled)
221 dma_fence_put(job->gang_submit);
222
223 if (!job->hw_fence.ops)
224 kfree(job);
225 else
226 dma_fence_put(&job->hw_fence);
227}
228
229struct dma_fence *amdgpu_job_submit(struct amdgpu_job *job)
230{
231 struct dma_fence *f;
232
233 drm_sched_job_arm(&job->base);
234 f = dma_fence_get(&job->base.s_fence->finished);
235 amdgpu_job_free_resources(job);
236 drm_sched_entity_push_job(&job->base);
237
238 return f;
239}
240
241int amdgpu_job_submit_direct(struct amdgpu_job *job, struct amdgpu_ring *ring,
242 struct dma_fence **fence)
243{
244 int r;
245
246 job->base.sched = &ring->sched;
247 r = amdgpu_ib_schedule(ring, job->num_ibs, job->ibs, job, fence);
248
249 if (r)
250 return r;
251
252 amdgpu_job_free(job);
253 return 0;
254}
255
256static struct dma_fence *
257amdgpu_job_prepare_job(struct drm_sched_job *sched_job,
258 struct drm_sched_entity *s_entity)
259{
260 struct amdgpu_ring *ring = to_amdgpu_ring(s_entity->rq->sched);
261 struct amdgpu_job *job = to_amdgpu_job(sched_job);
262 struct dma_fence *fence = NULL;
263 int r;
264
265 /* Ignore soft recovered fences here */
266 r = drm_sched_entity_error(s_entity);
267 if (r && r != -ENODATA)
268 goto error;
269
270 if (!fence && job->gang_submit)
271 fence = amdgpu_device_switch_gang(ring->adev, job->gang_submit);
272
273 while (!fence && job->vm && !job->vmid) {
274 r = amdgpu_vmid_grab(job->vm, ring, job, &fence);
275 if (r) {
276 DRM_ERROR("Error getting VM ID (%d)\n", r);
277 goto error;
278 }
279 }
280
281 return fence;
282
283error:
284 dma_fence_set_error(&job->base.s_fence->finished, r);
285 return NULL;
286}
287
288static struct dma_fence *amdgpu_job_run(struct drm_sched_job *sched_job)
289{
290 struct amdgpu_ring *ring = to_amdgpu_ring(sched_job->sched);
291 struct amdgpu_device *adev = ring->adev;
292 struct dma_fence *fence = NULL, *finished;
293 struct amdgpu_job *job;
294 int r = 0;
295
296 job = to_amdgpu_job(sched_job);
297 finished = &job->base.s_fence->finished;
298
299 trace_amdgpu_sched_run_job(job);
300
301 /* Skip job if VRAM is lost and never resubmit gangs */
302 if (job->generation != amdgpu_vm_generation(adev, job->vm) ||
303 (job->job_run_counter && job->gang_submit))
304 dma_fence_set_error(finished, -ECANCELED);
305
306 if (finished->error < 0) {
307 dev_dbg(adev->dev, "Skip scheduling IBs in ring(%s)",
308 ring->name);
309 } else {
310 r = amdgpu_ib_schedule(ring, job->num_ibs, job->ibs, job,
311 &fence);
312 if (r)
313 dev_err(adev->dev,
314 "Error scheduling IBs (%d) in ring(%s)", r,
315 ring->name);
316 }
317
318 job->job_run_counter++;
319 amdgpu_job_free_resources(job);
320
321 fence = r ? ERR_PTR(r) : fence;
322 return fence;
323}
324
325#define to_drm_sched_job(sched_job) \
326 container_of((sched_job), struct drm_sched_job, queue_node)
327
328void amdgpu_job_stop_all_jobs_on_sched(struct drm_gpu_scheduler *sched)
329{
330 struct drm_sched_job *s_job;
331 struct drm_sched_entity *s_entity = NULL;
332 int i;
333
334 /* Signal all jobs not yet scheduled */
335 for (i = DRM_SCHED_PRIORITY_KERNEL; i < sched->num_rqs; i++) {
336 struct drm_sched_rq *rq = sched->sched_rq[i];
337 spin_lock(&rq->lock);
338 list_for_each_entry(s_entity, &rq->entities, list) {
339 while ((s_job = to_drm_sched_job(spsc_queue_pop(&s_entity->job_queue)))) {
340 struct drm_sched_fence *s_fence = s_job->s_fence;
341
342 dma_fence_signal(&s_fence->scheduled);
343 dma_fence_set_error(&s_fence->finished, -EHWPOISON);
344 dma_fence_signal(&s_fence->finished);
345 }
346 }
347 spin_unlock(&rq->lock);
348 }
349
350 /* Signal all jobs already scheduled to HW */
351 list_for_each_entry(s_job, &sched->pending_list, list) {
352 struct drm_sched_fence *s_fence = s_job->s_fence;
353
354 dma_fence_set_error(&s_fence->finished, -EHWPOISON);
355 dma_fence_signal(&s_fence->finished);
356 }
357}
358
359const struct drm_sched_backend_ops amdgpu_sched_ops = {
360 .prepare_job = amdgpu_job_prepare_job,
361 .run_job = amdgpu_job_run,
362 .timedout_job = amdgpu_job_timedout,
363 .free_job = amdgpu_job_free_cb
364};
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 void amdgpu_job_timedout(struct drm_sched_job *s_job)
32{
33 struct amdgpu_job *job = container_of(s_job, struct amdgpu_job, base);
34
35 DRM_ERROR("ring %s timeout, last signaled seq=%u, last emitted seq=%u\n",
36 job->base.sched->name,
37 atomic_read(&job->ring->fence_drv.last_seq),
38 job->ring->fence_drv.sync_seq);
39
40 amdgpu_device_gpu_recover(job->adev, job, false);
41}
42
43int amdgpu_job_alloc(struct amdgpu_device *adev, unsigned num_ibs,
44 struct amdgpu_job **job, struct amdgpu_vm *vm)
45{
46 size_t size = sizeof(struct amdgpu_job);
47
48 if (num_ibs == 0)
49 return -EINVAL;
50
51 size += sizeof(struct amdgpu_ib) * num_ibs;
52
53 *job = kzalloc(size, GFP_KERNEL);
54 if (!*job)
55 return -ENOMEM;
56
57 (*job)->adev = adev;
58 (*job)->vm = vm;
59 (*job)->ibs = (void *)&(*job)[1];
60 (*job)->num_ibs = num_ibs;
61
62 amdgpu_sync_create(&(*job)->sync);
63 amdgpu_sync_create(&(*job)->sched_sync);
64 (*job)->vram_lost_counter = atomic_read(&adev->vram_lost_counter);
65
66 return 0;
67}
68
69int amdgpu_job_alloc_with_ib(struct amdgpu_device *adev, unsigned size,
70 struct amdgpu_job **job)
71{
72 int r;
73
74 r = amdgpu_job_alloc(adev, 1, job, NULL);
75 if (r)
76 return r;
77
78 r = amdgpu_ib_get(adev, NULL, size, &(*job)->ibs[0]);
79 if (r)
80 kfree(*job);
81 else
82 (*job)->vm_pd_addr = adev->gart.table_addr;
83
84 return r;
85}
86
87void amdgpu_job_free_resources(struct amdgpu_job *job)
88{
89 struct dma_fence *f;
90 unsigned i;
91
92 /* use sched fence if available */
93 f = job->base.s_fence ? &job->base.s_fence->finished : job->fence;
94
95 for (i = 0; i < job->num_ibs; ++i)
96 amdgpu_ib_free(job->adev, &job->ibs[i], f);
97}
98
99static void amdgpu_job_free_cb(struct drm_sched_job *s_job)
100{
101 struct amdgpu_job *job = container_of(s_job, struct amdgpu_job, base);
102
103 amdgpu_ring_priority_put(job->ring, s_job->s_priority);
104 dma_fence_put(job->fence);
105 amdgpu_sync_free(&job->sync);
106 amdgpu_sync_free(&job->sched_sync);
107 kfree(job);
108}
109
110void amdgpu_job_free(struct amdgpu_job *job)
111{
112 amdgpu_job_free_resources(job);
113
114 dma_fence_put(job->fence);
115 amdgpu_sync_free(&job->sync);
116 amdgpu_sync_free(&job->sched_sync);
117 kfree(job);
118}
119
120int amdgpu_job_submit(struct amdgpu_job *job, struct amdgpu_ring *ring,
121 struct drm_sched_entity *entity, void *owner,
122 struct dma_fence **f)
123{
124 int r;
125 job->ring = ring;
126
127 if (!f)
128 return -EINVAL;
129
130 r = drm_sched_job_init(&job->base, &ring->sched, entity, owner);
131 if (r)
132 return r;
133
134 job->owner = owner;
135 job->fence_ctx = entity->fence_context;
136 *f = dma_fence_get(&job->base.s_fence->finished);
137 amdgpu_job_free_resources(job);
138 amdgpu_ring_priority_get(job->ring, job->base.s_priority);
139 drm_sched_entity_push_job(&job->base, entity);
140
141 return 0;
142}
143
144static struct dma_fence *amdgpu_job_dependency(struct drm_sched_job *sched_job,
145 struct drm_sched_entity *s_entity)
146{
147 struct amdgpu_job *job = to_amdgpu_job(sched_job);
148 struct amdgpu_vm *vm = job->vm;
149 bool explicit = false;
150 int r;
151 struct dma_fence *fence = amdgpu_sync_get_fence(&job->sync, &explicit);
152
153 if (fence && explicit) {
154 if (drm_sched_dependency_optimized(fence, s_entity)) {
155 r = amdgpu_sync_fence(job->adev, &job->sched_sync, fence, false);
156 if (r)
157 DRM_ERROR("Error adding fence to sync (%d)\n", r);
158 }
159 }
160
161 while (fence == NULL && vm && !job->vmid) {
162 struct amdgpu_ring *ring = job->ring;
163
164 r = amdgpu_vmid_grab(vm, ring, &job->sync,
165 &job->base.s_fence->finished,
166 job);
167 if (r)
168 DRM_ERROR("Error getting VM ID (%d)\n", r);
169
170 fence = amdgpu_sync_get_fence(&job->sync, NULL);
171 }
172
173 return fence;
174}
175
176static struct dma_fence *amdgpu_job_run(struct drm_sched_job *sched_job)
177{
178 struct dma_fence *fence = NULL, *finished;
179 struct amdgpu_device *adev;
180 struct amdgpu_job *job;
181 int r;
182
183 if (!sched_job) {
184 DRM_ERROR("job is null\n");
185 return NULL;
186 }
187 job = to_amdgpu_job(sched_job);
188 finished = &job->base.s_fence->finished;
189 adev = job->adev;
190
191 BUG_ON(amdgpu_sync_peek_fence(&job->sync, NULL));
192
193 trace_amdgpu_sched_run_job(job);
194
195 if (job->vram_lost_counter != atomic_read(&adev->vram_lost_counter))
196 dma_fence_set_error(finished, -ECANCELED);/* skip IB as well if VRAM lost */
197
198 if (finished->error < 0) {
199 DRM_INFO("Skip scheduling IBs!\n");
200 } else {
201 r = amdgpu_ib_schedule(job->ring, job->num_ibs, job->ibs, job,
202 &fence);
203 if (r)
204 DRM_ERROR("Error scheduling IBs (%d)\n", r);
205 }
206 /* if gpu reset, hw fence will be replaced here */
207 dma_fence_put(job->fence);
208 job->fence = dma_fence_get(fence);
209
210 amdgpu_job_free_resources(job);
211 return fence;
212}
213
214const struct drm_sched_backend_ops amdgpu_sched_ops = {
215 .dependency = amdgpu_job_dependency,
216 .run_job = amdgpu_job_run,
217 .timedout_job = amdgpu_job_timedout,
218 .free_job = amdgpu_job_free_cb
219};