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 33 static enum drm_gpu_sched_stat amdgpu_job_timedout(struct drm_sched_job *s_job) 34 { 35 struct amdgpu_ring *ring = to_amdgpu_ring(s_job->sched); 36 struct amdgpu_job *job = to_amdgpu_job(s_job); 37 struct amdgpu_task_info ti; 38 struct amdgpu_device *adev = ring->adev; 39 int idx; 40 int r; 41 42 if (!drm_dev_enter(adev_to_drm(adev), &idx)) { 43 DRM_INFO("%s - device unplugged skipping recovery on scheduler:%s", 44 __func__, s_job->sched->name); 45 46 /* Effectively the job is aborted as the device is gone */ 47 return DRM_GPU_SCHED_STAT_ENODEV; 48 } 49 50 memset(&ti, 0, sizeof(struct amdgpu_task_info)); 51 52 if (amdgpu_gpu_recovery && 53 amdgpu_ring_soft_recovery(ring, job->vmid, s_job->s_fence->parent)) { 54 DRM_ERROR("ring %s timeout, but soft recovered\n", 55 s_job->sched->name); 56 goto exit; 57 } 58 59 amdgpu_vm_get_task_info(ring->adev, job->pasid, &ti); 60 DRM_ERROR("ring %s timeout, signaled seq=%u, emitted seq=%u\n", 61 job->base.sched->name, atomic_read(&ring->fence_drv.last_seq), 62 ring->fence_drv.sync_seq); 63 DRM_ERROR("Process information: process %s pid %d thread %s pid %d\n", 64 ti.process_name, ti.tgid, ti.task_name, ti.pid); 65 66 if (amdgpu_device_should_recover_gpu(ring->adev)) { 67 r = amdgpu_device_gpu_recover(ring->adev, job); 68 if (r) 69 DRM_ERROR("GPU Recovery Failed: %d\n", r); 70 } else { 71 drm_sched_suspend_timeout(&ring->sched); 72 if (amdgpu_sriov_vf(adev)) 73 adev->virt.tdr_debug = true; 74 } 75 76 exit: 77 drm_dev_exit(idx); 78 return DRM_GPU_SCHED_STAT_NOMINAL; 79 } 80 81 int amdgpu_job_alloc(struct amdgpu_device *adev, unsigned num_ibs, 82 struct amdgpu_job **job, struct amdgpu_vm *vm) 83 { 84 if (num_ibs == 0) 85 return -EINVAL; 86 87 *job = kzalloc(struct_size(*job, ibs, num_ibs), GFP_KERNEL); 88 if (!*job) 89 return -ENOMEM; 90 91 /* 92 * Initialize the scheduler to at least some ring so that we always 93 * have a pointer to adev. 94 */ 95 (*job)->base.sched = &adev->rings[0]->sched; 96 (*job)->vm = vm; 97 (*job)->num_ibs = num_ibs; 98 99 amdgpu_sync_create(&(*job)->sync); 100 amdgpu_sync_create(&(*job)->sched_sync); 101 (*job)->vram_lost_counter = atomic_read(&adev->vram_lost_counter); 102 (*job)->vm_pd_addr = AMDGPU_BO_INVALID_OFFSET; 103 104 return 0; 105 } 106 107 int amdgpu_job_alloc_with_ib(struct amdgpu_device *adev, unsigned size, 108 enum amdgpu_ib_pool_type pool_type, 109 struct amdgpu_job **job) 110 { 111 int r; 112 113 r = amdgpu_job_alloc(adev, 1, job, NULL); 114 if (r) 115 return r; 116 117 r = amdgpu_ib_get(adev, NULL, size, pool_type, &(*job)->ibs[0]); 118 if (r) 119 kfree(*job); 120 121 return r; 122 } 123 124 void amdgpu_job_free_resources(struct amdgpu_job *job) 125 { 126 struct amdgpu_ring *ring = to_amdgpu_ring(job->base.sched); 127 struct dma_fence *f; 128 struct dma_fence *hw_fence; 129 unsigned i; 130 131 if (job->hw_fence.ops == NULL) 132 hw_fence = job->external_hw_fence; 133 else 134 hw_fence = &job->hw_fence; 135 136 /* use sched fence if available */ 137 f = job->base.s_fence ? &job->base.s_fence->finished : hw_fence; 138 for (i = 0; i < job->num_ibs; ++i) 139 amdgpu_ib_free(ring->adev, &job->ibs[i], f); 140 } 141 142 static void amdgpu_job_free_cb(struct drm_sched_job *s_job) 143 { 144 struct amdgpu_job *job = to_amdgpu_job(s_job); 145 146 drm_sched_job_cleanup(s_job); 147 148 amdgpu_sync_free(&job->sync); 149 amdgpu_sync_free(&job->sched_sync); 150 151 /* only put the hw fence if has embedded fence */ 152 if (job->hw_fence.ops != NULL) 153 dma_fence_put(&job->hw_fence); 154 else 155 kfree(job); 156 } 157 158 void amdgpu_job_free(struct amdgpu_job *job) 159 { 160 amdgpu_job_free_resources(job); 161 amdgpu_sync_free(&job->sync); 162 amdgpu_sync_free(&job->sched_sync); 163 164 /* only put the hw fence if has embedded fence */ 165 if (job->hw_fence.ops != NULL) 166 dma_fence_put(&job->hw_fence); 167 else 168 kfree(job); 169 } 170 171 int amdgpu_job_submit(struct amdgpu_job *job, struct drm_sched_entity *entity, 172 void *owner, struct dma_fence **f) 173 { 174 int r; 175 176 if (!f) 177 return -EINVAL; 178 179 r = drm_sched_job_init(&job->base, entity, owner); 180 if (r) 181 return r; 182 183 drm_sched_job_arm(&job->base); 184 185 *f = dma_fence_get(&job->base.s_fence->finished); 186 amdgpu_job_free_resources(job); 187 drm_sched_entity_push_job(&job->base); 188 189 return 0; 190 } 191 192 int amdgpu_job_submit_direct(struct amdgpu_job *job, struct amdgpu_ring *ring, 193 struct dma_fence **fence) 194 { 195 int r; 196 197 job->base.sched = &ring->sched; 198 r = amdgpu_ib_schedule(ring, job->num_ibs, job->ibs, NULL, fence); 199 /* record external_hw_fence for direct submit */ 200 job->external_hw_fence = dma_fence_get(*fence); 201 if (r) 202 return r; 203 204 amdgpu_job_free(job); 205 dma_fence_put(*fence); 206 207 return 0; 208 } 209 210 static struct dma_fence *amdgpu_job_dependency(struct drm_sched_job *sched_job, 211 struct drm_sched_entity *s_entity) 212 { 213 struct amdgpu_ring *ring = to_amdgpu_ring(s_entity->rq->sched); 214 struct amdgpu_job *job = to_amdgpu_job(sched_job); 215 struct amdgpu_vm *vm = job->vm; 216 struct dma_fence *fence; 217 int r; 218 219 fence = amdgpu_sync_get_fence(&job->sync); 220 if (fence && drm_sched_dependency_optimized(fence, s_entity)) { 221 r = amdgpu_sync_fence(&job->sched_sync, fence); 222 if (r) 223 DRM_ERROR("Error adding fence (%d)\n", r); 224 } 225 226 while (fence == NULL && vm && !job->vmid) { 227 r = amdgpu_vmid_grab(vm, ring, &job->sync, 228 &job->base.s_fence->finished, 229 job); 230 if (r) 231 DRM_ERROR("Error getting VM ID (%d)\n", r); 232 233 fence = amdgpu_sync_get_fence(&job->sync); 234 } 235 236 return fence; 237 } 238 239 static struct dma_fence *amdgpu_job_run(struct drm_sched_job *sched_job) 240 { 241 struct amdgpu_ring *ring = to_amdgpu_ring(sched_job->sched); 242 struct dma_fence *fence = NULL, *finished; 243 struct amdgpu_job *job; 244 int r = 0; 245 246 job = to_amdgpu_job(sched_job); 247 finished = &job->base.s_fence->finished; 248 249 BUG_ON(amdgpu_sync_peek_fence(&job->sync, NULL)); 250 251 trace_amdgpu_sched_run_job(job); 252 253 if (job->vram_lost_counter != atomic_read(&ring->adev->vram_lost_counter)) 254 dma_fence_set_error(finished, -ECANCELED);/* skip IB as well if VRAM lost */ 255 256 if (finished->error < 0) { 257 DRM_INFO("Skip scheduling IBs!\n"); 258 } else { 259 r = amdgpu_ib_schedule(ring, job->num_ibs, job->ibs, job, 260 &fence); 261 if (r) 262 DRM_ERROR("Error scheduling IBs (%d)\n", r); 263 } 264 265 job->job_run_counter++; 266 amdgpu_job_free_resources(job); 267 268 fence = r ? ERR_PTR(r) : fence; 269 return fence; 270 } 271 272 #define to_drm_sched_job(sched_job) \ 273 container_of((sched_job), struct drm_sched_job, queue_node) 274 275 void amdgpu_job_stop_all_jobs_on_sched(struct drm_gpu_scheduler *sched) 276 { 277 struct drm_sched_job *s_job; 278 struct drm_sched_entity *s_entity = NULL; 279 int i; 280 281 /* Signal all jobs not yet scheduled */ 282 for (i = DRM_SCHED_PRIORITY_COUNT - 1; i >= DRM_SCHED_PRIORITY_MIN; i--) { 283 struct drm_sched_rq *rq = &sched->sched_rq[i]; 284 285 if (!rq) 286 continue; 287 288 spin_lock(&rq->lock); 289 list_for_each_entry(s_entity, &rq->entities, list) { 290 while ((s_job = to_drm_sched_job(spsc_queue_pop(&s_entity->job_queue)))) { 291 struct drm_sched_fence *s_fence = s_job->s_fence; 292 293 dma_fence_signal(&s_fence->scheduled); 294 dma_fence_set_error(&s_fence->finished, -EHWPOISON); 295 dma_fence_signal(&s_fence->finished); 296 } 297 } 298 spin_unlock(&rq->lock); 299 } 300 301 /* Signal all jobs already scheduled to HW */ 302 list_for_each_entry(s_job, &sched->pending_list, list) { 303 struct drm_sched_fence *s_fence = s_job->s_fence; 304 305 dma_fence_set_error(&s_fence->finished, -EHWPOISON); 306 dma_fence_signal(&s_fence->finished); 307 } 308 } 309 310 const struct drm_sched_backend_ops amdgpu_sched_ops = { 311 .dependency = amdgpu_job_dependency, 312 .run_job = amdgpu_job_run, 313 .timedout_job = amdgpu_job_timedout, 314 .free_job = amdgpu_job_free_cb 315 }; 316