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