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 #include "amdgpu_dev_coredump.h" 34 #include "amdgpu_xgmi.h" 35 36 static void amdgpu_job_do_core_dump(struct amdgpu_device *adev, 37 struct amdgpu_job *job) 38 { 39 int i; 40 41 dev_info(adev->dev, "Dumping IP State\n"); 42 for (i = 0; i < adev->num_ip_blocks; i++) 43 if (adev->ip_blocks[i].version->funcs->dump_ip_state) 44 adev->ip_blocks[i].version->funcs 45 ->dump_ip_state((void *)adev); 46 dev_info(adev->dev, "Dumping IP State Completed\n"); 47 48 amdgpu_coredump(adev, true, false, job); 49 } 50 51 static void amdgpu_job_core_dump(struct amdgpu_device *adev, 52 struct amdgpu_job *job) 53 { 54 struct list_head device_list, *device_list_handle = NULL; 55 struct amdgpu_device *tmp_adev = NULL; 56 struct amdgpu_hive_info *hive = NULL; 57 58 if (!amdgpu_sriov_vf(adev)) 59 hive = amdgpu_get_xgmi_hive(adev); 60 if (hive) 61 mutex_lock(&hive->hive_lock); 62 /* 63 * Reuse the logic in amdgpu_device_gpu_recover() to build list of 64 * devices for code dump 65 */ 66 INIT_LIST_HEAD(&device_list); 67 if (!amdgpu_sriov_vf(adev) && (adev->gmc.xgmi.num_physical_nodes > 1) && hive) { 68 list_for_each_entry(tmp_adev, &hive->device_list, gmc.xgmi.head) 69 list_add_tail(&tmp_adev->reset_list, &device_list); 70 if (!list_is_first(&adev->reset_list, &device_list)) 71 list_rotate_to_front(&adev->reset_list, &device_list); 72 device_list_handle = &device_list; 73 } else { 74 list_add_tail(&adev->reset_list, &device_list); 75 device_list_handle = &device_list; 76 } 77 78 /* Do the coredump for each device */ 79 list_for_each_entry(tmp_adev, device_list_handle, reset_list) 80 amdgpu_job_do_core_dump(tmp_adev, job); 81 82 if (hive) { 83 mutex_unlock(&hive->hive_lock); 84 amdgpu_put_xgmi_hive(hive); 85 } 86 } 87 88 static enum drm_gpu_sched_stat amdgpu_job_timedout(struct drm_sched_job *s_job) 89 { 90 struct amdgpu_ring *ring = to_amdgpu_ring(s_job->sched); 91 struct amdgpu_job *job = to_amdgpu_job(s_job); 92 struct amdgpu_task_info *ti; 93 struct amdgpu_device *adev = ring->adev; 94 int idx; 95 int r; 96 97 if (!drm_dev_enter(adev_to_drm(adev), &idx)) { 98 dev_info(adev->dev, "%s - device unplugged skipping recovery on scheduler:%s", 99 __func__, s_job->sched->name); 100 101 /* Effectively the job is aborted as the device is gone */ 102 return DRM_GPU_SCHED_STAT_ENODEV; 103 } 104 105 adev->job_hang = true; 106 107 /* 108 * Do the coredump immediately after a job timeout to get a very 109 * close dump/snapshot/representation of GPU's current error status 110 * Skip it for SRIOV, since VF FLR will be triggered by host driver 111 * before job timeout 112 */ 113 if (!amdgpu_sriov_vf(adev)) 114 amdgpu_job_core_dump(adev, job); 115 116 if (amdgpu_gpu_recovery && 117 amdgpu_ring_soft_recovery(ring, job->vmid, s_job->s_fence->parent)) { 118 dev_err(adev->dev, "ring %s timeout, but soft recovered\n", 119 s_job->sched->name); 120 goto exit; 121 } 122 123 dev_err(adev->dev, "ring %s timeout, signaled seq=%u, emitted seq=%u\n", 124 job->base.sched->name, atomic_read(&ring->fence_drv.last_seq), 125 ring->fence_drv.sync_seq); 126 127 ti = amdgpu_vm_get_task_info_pasid(ring->adev, job->pasid); 128 if (ti) { 129 dev_err(adev->dev, 130 "Process information: process %s pid %d thread %s pid %d\n", 131 ti->process_name, ti->tgid, ti->task_name, ti->pid); 132 amdgpu_vm_put_task_info(ti); 133 } 134 135 dma_fence_set_error(&s_job->s_fence->finished, -ETIME); 136 137 /* attempt a per ring reset */ 138 if (amdgpu_gpu_recovery && 139 ring->funcs->reset) { 140 /* stop the scheduler, but don't mess with the 141 * bad job yet because if ring reset fails 142 * we'll fall back to full GPU reset. 143 */ 144 drm_sched_wqueue_stop(&ring->sched); 145 r = amdgpu_ring_reset(ring, job->vmid); 146 if (!r) { 147 if (amdgpu_ring_sched_ready(ring)) 148 drm_sched_stop(&ring->sched, s_job); 149 atomic_inc(&ring->adev->gpu_reset_counter); 150 amdgpu_fence_driver_force_completion(ring); 151 if (amdgpu_ring_sched_ready(ring)) 152 drm_sched_start(&ring->sched); 153 goto exit; 154 } 155 } 156 157 if (amdgpu_device_should_recover_gpu(ring->adev)) { 158 struct amdgpu_reset_context reset_context; 159 memset(&reset_context, 0, sizeof(reset_context)); 160 161 reset_context.method = AMD_RESET_METHOD_NONE; 162 reset_context.reset_req_dev = adev; 163 reset_context.src = AMDGPU_RESET_SRC_JOB; 164 clear_bit(AMDGPU_NEED_FULL_RESET, &reset_context.flags); 165 166 /* 167 * To avoid an unnecessary extra coredump, as we have already 168 * got the very close representation of GPU's error status 169 */ 170 set_bit(AMDGPU_SKIP_COREDUMP, &reset_context.flags); 171 172 r = amdgpu_device_gpu_recover(ring->adev, job, &reset_context); 173 if (r) 174 dev_err(adev->dev, "GPU Recovery Failed: %d\n", r); 175 } else { 176 drm_sched_suspend_timeout(&ring->sched); 177 if (amdgpu_sriov_vf(adev)) 178 adev->virt.tdr_debug = true; 179 } 180 181 exit: 182 adev->job_hang = false; 183 drm_dev_exit(idx); 184 return DRM_GPU_SCHED_STAT_NOMINAL; 185 } 186 187 int amdgpu_job_alloc(struct amdgpu_device *adev, struct amdgpu_vm *vm, 188 struct drm_sched_entity *entity, void *owner, 189 unsigned int num_ibs, struct amdgpu_job **job) 190 { 191 if (num_ibs == 0) 192 return -EINVAL; 193 194 *job = kzalloc(struct_size(*job, ibs, num_ibs), GFP_KERNEL); 195 if (!*job) 196 return -ENOMEM; 197 198 /* 199 * Initialize the scheduler to at least some ring so that we always 200 * have a pointer to adev. 201 */ 202 (*job)->base.sched = &adev->rings[0]->sched; 203 (*job)->vm = vm; 204 205 amdgpu_sync_create(&(*job)->explicit_sync); 206 (*job)->generation = amdgpu_vm_generation(adev, vm); 207 (*job)->vm_pd_addr = AMDGPU_BO_INVALID_OFFSET; 208 209 if (!entity) 210 return 0; 211 212 return drm_sched_job_init(&(*job)->base, entity, 1, owner); 213 } 214 215 int amdgpu_job_alloc_with_ib(struct amdgpu_device *adev, 216 struct drm_sched_entity *entity, void *owner, 217 size_t size, enum amdgpu_ib_pool_type pool_type, 218 struct amdgpu_job **job) 219 { 220 int r; 221 222 r = amdgpu_job_alloc(adev, NULL, entity, owner, 1, job); 223 if (r) 224 return r; 225 226 (*job)->num_ibs = 1; 227 r = amdgpu_ib_get(adev, NULL, size, pool_type, &(*job)->ibs[0]); 228 if (r) { 229 if (entity) 230 drm_sched_job_cleanup(&(*job)->base); 231 kfree(*job); 232 } 233 234 return r; 235 } 236 237 void amdgpu_job_set_resources(struct amdgpu_job *job, struct amdgpu_bo *gds, 238 struct amdgpu_bo *gws, struct amdgpu_bo *oa) 239 { 240 if (gds) { 241 job->gds_base = amdgpu_bo_gpu_offset(gds) >> PAGE_SHIFT; 242 job->gds_size = amdgpu_bo_size(gds) >> PAGE_SHIFT; 243 } 244 if (gws) { 245 job->gws_base = amdgpu_bo_gpu_offset(gws) >> PAGE_SHIFT; 246 job->gws_size = amdgpu_bo_size(gws) >> PAGE_SHIFT; 247 } 248 if (oa) { 249 job->oa_base = amdgpu_bo_gpu_offset(oa) >> PAGE_SHIFT; 250 job->oa_size = amdgpu_bo_size(oa) >> PAGE_SHIFT; 251 } 252 } 253 254 void amdgpu_job_free_resources(struct amdgpu_job *job) 255 { 256 struct amdgpu_ring *ring = to_amdgpu_ring(job->base.sched); 257 struct dma_fence *f; 258 unsigned i; 259 260 /* Check if any fences where initialized */ 261 if (job->base.s_fence && job->base.s_fence->finished.ops) 262 f = &job->base.s_fence->finished; 263 else if (job->hw_fence.ops) 264 f = &job->hw_fence; 265 else 266 f = NULL; 267 268 for (i = 0; i < job->num_ibs; ++i) 269 amdgpu_ib_free(ring->adev, &job->ibs[i], f); 270 } 271 272 static void amdgpu_job_free_cb(struct drm_sched_job *s_job) 273 { 274 struct amdgpu_job *job = to_amdgpu_job(s_job); 275 276 drm_sched_job_cleanup(s_job); 277 278 amdgpu_sync_free(&job->explicit_sync); 279 280 /* only put the hw fence if has embedded fence */ 281 if (!job->hw_fence.ops) 282 kfree(job); 283 else 284 dma_fence_put(&job->hw_fence); 285 } 286 287 void amdgpu_job_set_gang_leader(struct amdgpu_job *job, 288 struct amdgpu_job *leader) 289 { 290 struct dma_fence *fence = &leader->base.s_fence->scheduled; 291 292 WARN_ON(job->gang_submit); 293 294 /* 295 * Don't add a reference when we are the gang leader to avoid circle 296 * dependency. 297 */ 298 if (job != leader) 299 dma_fence_get(fence); 300 job->gang_submit = fence; 301 } 302 303 void amdgpu_job_free(struct amdgpu_job *job) 304 { 305 if (job->base.entity) 306 drm_sched_job_cleanup(&job->base); 307 308 amdgpu_job_free_resources(job); 309 amdgpu_sync_free(&job->explicit_sync); 310 if (job->gang_submit != &job->base.s_fence->scheduled) 311 dma_fence_put(job->gang_submit); 312 313 if (!job->hw_fence.ops) 314 kfree(job); 315 else 316 dma_fence_put(&job->hw_fence); 317 } 318 319 struct dma_fence *amdgpu_job_submit(struct amdgpu_job *job) 320 { 321 struct dma_fence *f; 322 323 drm_sched_job_arm(&job->base); 324 f = dma_fence_get(&job->base.s_fence->finished); 325 amdgpu_job_free_resources(job); 326 drm_sched_entity_push_job(&job->base); 327 328 return f; 329 } 330 331 int amdgpu_job_submit_direct(struct amdgpu_job *job, struct amdgpu_ring *ring, 332 struct dma_fence **fence) 333 { 334 int r; 335 336 job->base.sched = &ring->sched; 337 r = amdgpu_ib_schedule(ring, job->num_ibs, job->ibs, job, fence); 338 339 if (r) 340 return r; 341 342 amdgpu_job_free(job); 343 return 0; 344 } 345 346 static struct dma_fence * 347 amdgpu_job_prepare_job(struct drm_sched_job *sched_job, 348 struct drm_sched_entity *s_entity) 349 { 350 struct amdgpu_ring *ring = to_amdgpu_ring(s_entity->rq->sched); 351 struct amdgpu_job *job = to_amdgpu_job(sched_job); 352 struct dma_fence *fence = NULL; 353 int r; 354 355 r = drm_sched_entity_error(s_entity); 356 if (r) 357 goto error; 358 359 if (!fence && job->gang_submit) 360 fence = amdgpu_device_switch_gang(ring->adev, job->gang_submit); 361 362 while (!fence && job->vm && !job->vmid) { 363 r = amdgpu_vmid_grab(job->vm, ring, job, &fence); 364 if (r) { 365 dev_err(ring->adev->dev, "Error getting VM ID (%d)\n", r); 366 goto error; 367 } 368 } 369 370 return fence; 371 372 error: 373 dma_fence_set_error(&job->base.s_fence->finished, r); 374 return NULL; 375 } 376 377 static struct dma_fence *amdgpu_job_run(struct drm_sched_job *sched_job) 378 { 379 struct amdgpu_ring *ring = to_amdgpu_ring(sched_job->sched); 380 struct amdgpu_device *adev = ring->adev; 381 struct dma_fence *fence = NULL, *finished; 382 struct amdgpu_job *job; 383 int r = 0; 384 385 job = to_amdgpu_job(sched_job); 386 finished = &job->base.s_fence->finished; 387 388 trace_amdgpu_sched_run_job(job); 389 390 /* Skip job if VRAM is lost and never resubmit gangs */ 391 if (job->generation != amdgpu_vm_generation(adev, job->vm) || 392 (job->job_run_counter && job->gang_submit)) 393 dma_fence_set_error(finished, -ECANCELED); 394 395 if (finished->error < 0) { 396 dev_dbg(adev->dev, "Skip scheduling IBs in ring(%s)", 397 ring->name); 398 } else { 399 r = amdgpu_ib_schedule(ring, job->num_ibs, job->ibs, job, 400 &fence); 401 if (r) 402 dev_err(adev->dev, 403 "Error scheduling IBs (%d) in ring(%s)", r, 404 ring->name); 405 } 406 407 job->job_run_counter++; 408 amdgpu_job_free_resources(job); 409 410 fence = r ? ERR_PTR(r) : fence; 411 return fence; 412 } 413 414 #define to_drm_sched_job(sched_job) \ 415 container_of((sched_job), struct drm_sched_job, queue_node) 416 417 void amdgpu_job_stop_all_jobs_on_sched(struct drm_gpu_scheduler *sched) 418 { 419 struct drm_sched_job *s_job; 420 struct drm_sched_entity *s_entity = NULL; 421 int i; 422 423 /* Signal all jobs not yet scheduled */ 424 for (i = DRM_SCHED_PRIORITY_KERNEL; i < sched->num_rqs; i++) { 425 struct drm_sched_rq *rq = sched->sched_rq[i]; 426 spin_lock(&rq->lock); 427 list_for_each_entry(s_entity, &rq->entities, list) { 428 while ((s_job = to_drm_sched_job(spsc_queue_pop(&s_entity->job_queue)))) { 429 struct drm_sched_fence *s_fence = s_job->s_fence; 430 431 dma_fence_signal(&s_fence->scheduled); 432 dma_fence_set_error(&s_fence->finished, -EHWPOISON); 433 dma_fence_signal(&s_fence->finished); 434 } 435 } 436 spin_unlock(&rq->lock); 437 } 438 439 /* Signal all jobs already scheduled to HW */ 440 list_for_each_entry(s_job, &sched->pending_list, list) { 441 struct drm_sched_fence *s_fence = s_job->s_fence; 442 443 dma_fence_set_error(&s_fence->finished, -EHWPOISON); 444 dma_fence_signal(&s_fence->finished); 445 } 446 } 447 448 const struct drm_sched_backend_ops amdgpu_sched_ops = { 449 .prepare_job = amdgpu_job_prepare_job, 450 .run_job = amdgpu_job_run, 451 .timedout_job = amdgpu_job_timedout, 452 .free_job = amdgpu_job_free_cb 453 }; 454