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
amdgpu_sched_process_priority_override(struct amdgpu_device * adev,int fd,int32_t priority)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
amdgpu_sched_context_priority_override(struct amdgpu_device * adev,int fd,unsigned ctx_id,int32_t priority)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
amdgpu_sched_ioctl(struct drm_device * dev,void * data,struct drm_file * filp)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