1 /* 2 * Copyright 2017 Valve Corporation 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 * Authors: Andres Rodriguez <andresx7@gmail.com> 23 */ 24 25 #include <linux/file.h> 26 #include <linux/pid.h> 27 28 #include <drm/amdgpu_drm.h> 29 30 #include "amdgpu.h" 31 #include "amdgpu_sched.h" 32 #include "amdgpu_vm.h" 33 34 static int amdgpu_sched_process_priority_override(struct amdgpu_device *adev, 35 int fd, 36 int32_t priority) 37 { 38 struct fd f = fdget(fd); 39 struct amdgpu_fpriv *fpriv; 40 struct amdgpu_ctx_mgr *mgr; 41 struct amdgpu_ctx *ctx; 42 uint32_t id; 43 int r; 44 45 if (!fd_file(f)) 46 return -EINVAL; 47 48 r = amdgpu_file_to_fpriv(fd_file(f), &fpriv); 49 if (r) { 50 fdput(f); 51 return r; 52 } 53 54 mgr = &fpriv->ctx_mgr; 55 mutex_lock(&mgr->lock); 56 idr_for_each_entry(&mgr->ctx_handles, ctx, id) 57 amdgpu_ctx_priority_override(ctx, priority); 58 mutex_unlock(&mgr->lock); 59 60 fdput(f); 61 return 0; 62 } 63 64 static int amdgpu_sched_context_priority_override(struct amdgpu_device *adev, 65 int fd, 66 unsigned ctx_id, 67 int32_t priority) 68 { 69 struct fd f = fdget(fd); 70 struct amdgpu_fpriv *fpriv; 71 struct amdgpu_ctx *ctx; 72 int r; 73 74 if (!fd_file(f)) 75 return -EINVAL; 76 77 r = amdgpu_file_to_fpriv(fd_file(f), &fpriv); 78 if (r) { 79 fdput(f); 80 return r; 81 } 82 83 ctx = amdgpu_ctx_get(fpriv, ctx_id); 84 85 if (!ctx) { 86 fdput(f); 87 return -EINVAL; 88 } 89 90 amdgpu_ctx_priority_override(ctx, priority); 91 amdgpu_ctx_put(ctx); 92 fdput(f); 93 94 return 0; 95 } 96 97 int amdgpu_sched_ioctl(struct drm_device *dev, void *data, 98 struct drm_file *filp) 99 { 100 union drm_amdgpu_sched *args = data; 101 struct amdgpu_device *adev = drm_to_adev(dev); 102 int r; 103 104 /* First check the op, then the op's argument. 105 */ 106 switch (args->in.op) { 107 case AMDGPU_SCHED_OP_PROCESS_PRIORITY_OVERRIDE: 108 case AMDGPU_SCHED_OP_CONTEXT_PRIORITY_OVERRIDE: 109 break; 110 default: 111 DRM_ERROR("Invalid sched op specified: %d\n", args->in.op); 112 return -EINVAL; 113 } 114 115 if (!amdgpu_ctx_priority_is_valid(args->in.priority)) { 116 WARN(1, "Invalid context priority %d\n", args->in.priority); 117 return -EINVAL; 118 } 119 120 switch (args->in.op) { 121 case AMDGPU_SCHED_OP_PROCESS_PRIORITY_OVERRIDE: 122 r = amdgpu_sched_process_priority_override(adev, 123 args->in.fd, 124 args->in.priority); 125 break; 126 case AMDGPU_SCHED_OP_CONTEXT_PRIORITY_OVERRIDE: 127 r = amdgpu_sched_context_priority_override(adev, 128 args->in.fd, 129 args->in.ctx_id, 130 args->in.priority); 131 break; 132 default: 133 /* Impossible. 134 */ 135 r = -EINVAL; 136 break; 137 } 138 139 return r; 140 } 141