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 static struct fence *amdgpu_sched_dependency(struct amd_sched_job *sched_job) 32 { 33 struct amdgpu_job *job = to_amdgpu_job(sched_job); 34 struct amdgpu_sync *sync = &job->ibs->sync; 35 struct amdgpu_vm *vm = job->ibs->vm; 36 37 struct fence *fence = amdgpu_sync_get_fence(sync); 38 39 if (fence == NULL && vm && !job->ibs->grabbed_vmid) { 40 struct amdgpu_ring *ring = job->ibs->ring; 41 int r; 42 43 r = amdgpu_vm_grab_id(vm, ring, sync, 44 &job->base.s_fence->base); 45 if (r) 46 DRM_ERROR("Error getting VM ID (%d)\n", r); 47 else 48 job->ibs->grabbed_vmid = true; 49 50 fence = amdgpu_sync_get_fence(sync); 51 } 52 53 return fence; 54 } 55 56 static struct fence *amdgpu_sched_run_job(struct amd_sched_job *sched_job) 57 { 58 struct amdgpu_fence *fence = NULL; 59 struct amdgpu_job *job; 60 int r; 61 62 if (!sched_job) { 63 DRM_ERROR("job is null\n"); 64 return NULL; 65 } 66 job = to_amdgpu_job(sched_job); 67 trace_amdgpu_sched_run_job(job); 68 r = amdgpu_ib_schedule(job->adev, job->num_ibs, job->ibs, job->owner); 69 if (r) { 70 DRM_ERROR("Error scheduling IBs (%d)\n", r); 71 goto err; 72 } 73 74 fence = job->ibs[job->num_ibs - 1].fence; 75 fence_get(&fence->base); 76 77 err: 78 if (job->free_job) 79 job->free_job(job); 80 81 kfree(job); 82 return fence ? &fence->base : NULL; 83 } 84 85 struct amd_sched_backend_ops amdgpu_sched_ops = { 86 .dependency = amdgpu_sched_dependency, 87 .run_job = amdgpu_sched_run_job, 88 }; 89 90 int amdgpu_sched_ib_submit_kernel_helper(struct amdgpu_device *adev, 91 struct amdgpu_ring *ring, 92 struct amdgpu_ib *ibs, 93 unsigned num_ibs, 94 int (*free_job)(struct amdgpu_job *), 95 void *owner, 96 struct fence **f) 97 { 98 struct amdgpu_job *job = 99 kzalloc(sizeof(struct amdgpu_job), GFP_KERNEL); 100 if (!job) 101 return -ENOMEM; 102 job->base.sched = &ring->sched; 103 job->base.s_entity = &adev->kernel_ctx.rings[ring->idx].entity; 104 job->base.s_fence = amd_sched_fence_create(job->base.s_entity, owner); 105 if (!job->base.s_fence) { 106 kfree(job); 107 return -ENOMEM; 108 } 109 *f = fence_get(&job->base.s_fence->base); 110 111 job->adev = adev; 112 job->ibs = ibs; 113 job->num_ibs = num_ibs; 114 job->owner = owner; 115 job->free_job = free_job; 116 amd_sched_entity_push_job(&job->base); 117 118 return 0; 119 } 120