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 "amdgpu.h" 29 #include "amdgpu_trace.h" 30 31 static void amdgpu_job_timedout(struct drm_sched_job *s_job) 32 { 33 struct amdgpu_ring *ring = to_amdgpu_ring(s_job->sched); 34 struct amdgpu_job *job = to_amdgpu_job(s_job); 35 struct amdgpu_task_info ti; 36 struct amdgpu_device *adev = ring->adev; 37 38 memset(&ti, 0, sizeof(struct amdgpu_task_info)); 39 40 if (amdgpu_gpu_recovery && 41 amdgpu_ring_soft_recovery(ring, job->vmid, s_job->s_fence->parent)) { 42 DRM_ERROR("ring %s timeout, but soft recovered\n", 43 s_job->sched->name); 44 return; 45 } 46 47 amdgpu_vm_get_task_info(ring->adev, job->pasid, &ti); 48 DRM_ERROR("ring %s timeout, signaled seq=%u, emitted seq=%u\n", 49 job->base.sched->name, atomic_read(&ring->fence_drv.last_seq), 50 ring->fence_drv.sync_seq); 51 DRM_ERROR("Process information: process %s pid %d thread %s pid %d\n", 52 ti.process_name, ti.tgid, ti.task_name, ti.pid); 53 54 if (amdgpu_device_should_recover_gpu(ring->adev)) { 55 amdgpu_device_gpu_recover(ring->adev, job); 56 } else { 57 drm_sched_suspend_timeout(&ring->sched); 58 if (amdgpu_sriov_vf(adev)) 59 adev->virt.tdr_debug = true; 60 } 61 } 62 63 int amdgpu_job_alloc(struct amdgpu_device *adev, unsigned num_ibs, 64 struct amdgpu_job **job, struct amdgpu_vm *vm) 65 { 66 size_t size = sizeof(struct amdgpu_job); 67 68 if (num_ibs == 0) 69 return -EINVAL; 70 71 size += sizeof(struct amdgpu_ib) * num_ibs; 72 73 *job = kzalloc(size, GFP_KERNEL); 74 if (!*job) 75 return -ENOMEM; 76 77 /* 78 * Initialize the scheduler to at least some ring so that we always 79 * have a pointer to adev. 80 */ 81 (*job)->base.sched = &adev->rings[0]->sched; 82 (*job)->vm = vm; 83 (*job)->ibs = (void *)&(*job)[1]; 84 (*job)->num_ibs = num_ibs; 85 86 amdgpu_sync_create(&(*job)->sync); 87 amdgpu_sync_create(&(*job)->sched_sync); 88 (*job)->vram_lost_counter = atomic_read(&adev->vram_lost_counter); 89 (*job)->vm_pd_addr = AMDGPU_BO_INVALID_OFFSET; 90 91 return 0; 92 } 93 94 int amdgpu_job_alloc_with_ib(struct amdgpu_device *adev, unsigned size, 95 enum amdgpu_ib_pool_type pool_type, 96 struct amdgpu_job **job) 97 { 98 int r; 99 100 r = amdgpu_job_alloc(adev, 1, job, NULL); 101 if (r) 102 return r; 103 104 r = amdgpu_ib_get(adev, NULL, size, pool_type, &(*job)->ibs[0]); 105 if (r) 106 kfree(*job); 107 108 return r; 109 } 110 111 void amdgpu_job_free_resources(struct amdgpu_job *job) 112 { 113 struct amdgpu_ring *ring = to_amdgpu_ring(job->base.sched); 114 struct dma_fence *f; 115 unsigned i; 116 117 /* use sched fence if available */ 118 f = job->base.s_fence ? &job->base.s_fence->finished : job->fence; 119 120 for (i = 0; i < job->num_ibs; ++i) 121 amdgpu_ib_free(ring->adev, &job->ibs[i], f); 122 } 123 124 static void amdgpu_job_free_cb(struct drm_sched_job *s_job) 125 { 126 struct amdgpu_job *job = to_amdgpu_job(s_job); 127 128 drm_sched_job_cleanup(s_job); 129 130 dma_fence_put(job->fence); 131 amdgpu_sync_free(&job->sync); 132 amdgpu_sync_free(&job->sched_sync); 133 kfree(job); 134 } 135 136 void amdgpu_job_free(struct amdgpu_job *job) 137 { 138 amdgpu_job_free_resources(job); 139 140 dma_fence_put(job->fence); 141 amdgpu_sync_free(&job->sync); 142 amdgpu_sync_free(&job->sched_sync); 143 kfree(job); 144 } 145 146 int amdgpu_job_submit(struct amdgpu_job *job, struct drm_sched_entity *entity, 147 void *owner, struct dma_fence **f) 148 { 149 int r; 150 151 if (!f) 152 return -EINVAL; 153 154 r = drm_sched_job_init(&job->base, entity, owner); 155 if (r) 156 return r; 157 158 *f = dma_fence_get(&job->base.s_fence->finished); 159 amdgpu_job_free_resources(job); 160 drm_sched_entity_push_job(&job->base, entity); 161 162 return 0; 163 } 164 165 int amdgpu_job_submit_direct(struct amdgpu_job *job, struct amdgpu_ring *ring, 166 struct dma_fence **fence) 167 { 168 int r; 169 170 job->base.sched = &ring->sched; 171 r = amdgpu_ib_schedule(ring, job->num_ibs, job->ibs, NULL, fence); 172 job->fence = dma_fence_get(*fence); 173 if (r) 174 return r; 175 176 amdgpu_job_free(job); 177 return 0; 178 } 179 180 static struct dma_fence *amdgpu_job_dependency(struct drm_sched_job *sched_job, 181 struct drm_sched_entity *s_entity) 182 { 183 struct amdgpu_ring *ring = to_amdgpu_ring(s_entity->rq->sched); 184 struct amdgpu_job *job = to_amdgpu_job(sched_job); 185 struct amdgpu_vm *vm = job->vm; 186 struct dma_fence *fence; 187 int r; 188 189 fence = amdgpu_sync_get_fence(&job->sync); 190 if (fence && drm_sched_dependency_optimized(fence, s_entity)) { 191 r = amdgpu_sync_fence(&job->sched_sync, fence); 192 if (r) 193 DRM_ERROR("Error adding fence (%d)\n", r); 194 } 195 196 while (fence == NULL && vm && !job->vmid) { 197 r = amdgpu_vmid_grab(vm, ring, &job->sync, 198 &job->base.s_fence->finished, 199 job); 200 if (r) 201 DRM_ERROR("Error getting VM ID (%d)\n", r); 202 203 fence = amdgpu_sync_get_fence(&job->sync); 204 } 205 206 return fence; 207 } 208 209 static struct dma_fence *amdgpu_job_run(struct drm_sched_job *sched_job) 210 { 211 struct amdgpu_ring *ring = to_amdgpu_ring(sched_job->sched); 212 struct dma_fence *fence = NULL, *finished; 213 struct amdgpu_job *job; 214 int r = 0; 215 216 job = to_amdgpu_job(sched_job); 217 finished = &job->base.s_fence->finished; 218 219 BUG_ON(amdgpu_sync_peek_fence(&job->sync, NULL)); 220 221 trace_amdgpu_sched_run_job(job); 222 223 if (job->vram_lost_counter != atomic_read(&ring->adev->vram_lost_counter)) 224 dma_fence_set_error(finished, -ECANCELED);/* skip IB as well if VRAM lost */ 225 226 if (finished->error < 0) { 227 DRM_INFO("Skip scheduling IBs!\n"); 228 } else { 229 r = amdgpu_ib_schedule(ring, job->num_ibs, job->ibs, job, 230 &fence); 231 if (r) 232 DRM_ERROR("Error scheduling IBs (%d)\n", r); 233 } 234 /* if gpu reset, hw fence will be replaced here */ 235 dma_fence_put(job->fence); 236 job->fence = dma_fence_get(fence); 237 238 amdgpu_job_free_resources(job); 239 240 fence = r ? ERR_PTR(r) : fence; 241 return fence; 242 } 243 244 #define to_drm_sched_job(sched_job) \ 245 container_of((sched_job), struct drm_sched_job, queue_node) 246 247 void amdgpu_job_stop_all_jobs_on_sched(struct drm_gpu_scheduler *sched) 248 { 249 struct drm_sched_job *s_job; 250 struct drm_sched_entity *s_entity = NULL; 251 int i; 252 253 /* Signal all jobs not yet scheduled */ 254 for (i = DRM_SCHED_PRIORITY_COUNT - 1; i >= DRM_SCHED_PRIORITY_MIN; i--) { 255 struct drm_sched_rq *rq = &sched->sched_rq[i]; 256 257 if (!rq) 258 continue; 259 260 spin_lock(&rq->lock); 261 list_for_each_entry(s_entity, &rq->entities, list) { 262 while ((s_job = to_drm_sched_job(spsc_queue_pop(&s_entity->job_queue)))) { 263 struct drm_sched_fence *s_fence = s_job->s_fence; 264 265 dma_fence_signal(&s_fence->scheduled); 266 dma_fence_set_error(&s_fence->finished, -EHWPOISON); 267 dma_fence_signal(&s_fence->finished); 268 } 269 } 270 spin_unlock(&rq->lock); 271 } 272 273 /* Signal all jobs already scheduled to HW */ 274 list_for_each_entry(s_job, &sched->pending_list, list) { 275 struct drm_sched_fence *s_fence = s_job->s_fence; 276 277 dma_fence_set_error(&s_fence->finished, -EHWPOISON); 278 dma_fence_signal(&s_fence->finished); 279 } 280 } 281 282 const struct drm_sched_backend_ops amdgpu_sched_ops = { 283 .dependency = amdgpu_job_dependency, 284 .run_job = amdgpu_job_run, 285 .timedout_job = amdgpu_job_timedout, 286 .free_job = amdgpu_job_free_cb 287 }; 288