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 31 int amdgpu_job_alloc(struct amdgpu_device *adev, unsigned num_ibs, 32 struct amdgpu_job **job) 33 { 34 size_t size = sizeof(struct amdgpu_job); 35 36 if (num_ibs == 0) 37 return -EINVAL; 38 39 size += sizeof(struct amdgpu_ib) * num_ibs; 40 41 *job = kzalloc(size, GFP_KERNEL); 42 if (!*job) 43 return -ENOMEM; 44 45 (*job)->adev = adev; 46 (*job)->ibs = (void *)&(*job)[1]; 47 (*job)->num_ibs = num_ibs; 48 49 amdgpu_sync_create(&(*job)->sync); 50 51 return 0; 52 } 53 54 int amdgpu_job_alloc_with_ib(struct amdgpu_device *adev, unsigned size, 55 struct amdgpu_job **job) 56 { 57 int r; 58 59 r = amdgpu_job_alloc(adev, 1, job); 60 if (r) 61 return r; 62 63 r = amdgpu_ib_get(adev, NULL, size, &(*job)->ibs[0]); 64 if (r) 65 kfree(*job); 66 67 return r; 68 } 69 70 void amdgpu_job_free(struct amdgpu_job *job) 71 { 72 unsigned i; 73 74 for (i = 0; i < job->num_ibs; ++i) 75 amdgpu_ib_free(job->adev, &job->ibs[i]); 76 77 amdgpu_bo_unref(&job->uf.bo); 78 amdgpu_sync_free(&job->sync); 79 kfree(job); 80 } 81 82 int amdgpu_job_submit(struct amdgpu_job *job, struct amdgpu_ring *ring, 83 void *owner, struct fence **f) 84 { 85 struct amdgpu_device *adev = job->adev; 86 87 job->ring = ring; 88 job->base.sched = &ring->sched; 89 job->base.s_entity = &adev->kernel_ctx.rings[ring->idx].entity; 90 job->base.s_fence = amd_sched_fence_create(job->base.s_entity, owner); 91 if (!job->base.s_fence) 92 return -ENOMEM; 93 94 *f = fence_get(&job->base.s_fence->base); 95 96 job->owner = owner; 97 amd_sched_entity_push_job(&job->base); 98 99 return 0; 100 } 101 102 static struct fence *amdgpu_job_dependency(struct amd_sched_job *sched_job) 103 { 104 struct amdgpu_job *job = to_amdgpu_job(sched_job); 105 struct amdgpu_vm *vm = job->ibs->vm; 106 107 struct fence *fence = amdgpu_sync_get_fence(&job->sync); 108 109 if (fence == NULL && vm && !job->ibs->grabbed_vmid) { 110 struct amdgpu_ring *ring = job->ring; 111 int r; 112 113 r = amdgpu_vm_grab_id(vm, ring, &job->sync, 114 &job->base.s_fence->base); 115 if (r) 116 DRM_ERROR("Error getting VM ID (%d)\n", r); 117 else 118 job->ibs->grabbed_vmid = true; 119 120 fence = amdgpu_sync_get_fence(&job->sync); 121 } 122 123 return fence; 124 } 125 126 static struct fence *amdgpu_job_run(struct amd_sched_job *sched_job) 127 { 128 struct fence *fence = NULL; 129 struct amdgpu_job *job; 130 int r; 131 132 if (!sched_job) { 133 DRM_ERROR("job is null\n"); 134 return NULL; 135 } 136 job = to_amdgpu_job(sched_job); 137 138 r = amdgpu_sync_wait(&job->sync); 139 if (r) { 140 DRM_ERROR("failed to sync wait (%d)\n", r); 141 return NULL; 142 } 143 144 trace_amdgpu_sched_run_job(job); 145 r = amdgpu_ib_schedule(job->ring, job->num_ibs, job->ibs, job->owner, 146 job->sync.last_vm_update, &fence); 147 if (r) { 148 DRM_ERROR("Error scheduling IBs (%d)\n", r); 149 goto err; 150 } 151 152 err: 153 amdgpu_job_free(job); 154 return fence; 155 } 156 157 struct amd_sched_backend_ops amdgpu_sched_ops = { 158 .dependency = amdgpu_job_dependency, 159 .run_job = amdgpu_job_run, 160 }; 161