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}; 365