tjh.dev
Linux kernel mirror (for testing)
git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git
kernel
os
linux
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/pid.h>
27#include <drm/amdgpu_drm.h>
28#include "amdgpu.h"
29
30#include "amdgpu_vm.h"
31
32enum drm_sched_priority amdgpu_to_sched_priority(int amdgpu_priority)
33{
34 switch (amdgpu_priority) {
35 case AMDGPU_CTX_PRIORITY_VERY_HIGH:
36 return DRM_SCHED_PRIORITY_HIGH_HW;
37 case AMDGPU_CTX_PRIORITY_HIGH:
38 return DRM_SCHED_PRIORITY_HIGH_SW;
39 case AMDGPU_CTX_PRIORITY_NORMAL:
40 return DRM_SCHED_PRIORITY_NORMAL;
41 case AMDGPU_CTX_PRIORITY_LOW:
42 case AMDGPU_CTX_PRIORITY_VERY_LOW:
43 return DRM_SCHED_PRIORITY_LOW;
44 case AMDGPU_CTX_PRIORITY_UNSET:
45 return DRM_SCHED_PRIORITY_UNSET;
46 default:
47 WARN(1, "Invalid context priority %d\n", amdgpu_priority);
48 return DRM_SCHED_PRIORITY_INVALID;
49 }
50}
51
52static int amdgpu_sched_process_priority_override(struct amdgpu_device *adev,
53 int fd,
54 enum drm_sched_priority priority)
55{
56 struct fd f = fdget(fd);
57 struct amdgpu_fpriv *fpriv;
58 struct amdgpu_ctx *ctx;
59 uint32_t id;
60 int r;
61
62 if (!f.file)
63 return -EINVAL;
64
65 r = amdgpu_file_to_fpriv(f.file, &fpriv);
66 if (r) {
67 fdput(f);
68 return r;
69 }
70
71 idr_for_each_entry(&fpriv->ctx_mgr.ctx_handles, ctx, id)
72 amdgpu_ctx_priority_override(ctx, priority);
73
74 fdput(f);
75 return 0;
76}
77
78static int amdgpu_sched_context_priority_override(struct amdgpu_device *adev,
79 int fd,
80 unsigned ctx_id,
81 enum drm_sched_priority priority)
82{
83 struct fd f = fdget(fd);
84 struct amdgpu_fpriv *fpriv;
85 struct amdgpu_ctx *ctx;
86 int r;
87
88 if (!f.file)
89 return -EINVAL;
90
91 r = amdgpu_file_to_fpriv(f.file, &fpriv);
92 if (r) {
93 fdput(f);
94 return r;
95 }
96
97 ctx = amdgpu_ctx_get(fpriv, ctx_id);
98
99 if (!ctx) {
100 fdput(f);
101 return -EINVAL;
102 }
103
104 amdgpu_ctx_priority_override(ctx, priority);
105 amdgpu_ctx_put(ctx);
106 fdput(f);
107
108 return 0;
109}
110
111int amdgpu_sched_ioctl(struct drm_device *dev, void *data,
112 struct drm_file *filp)
113{
114 union drm_amdgpu_sched *args = data;
115 struct amdgpu_device *adev = dev->dev_private;
116 enum drm_sched_priority priority;
117 int r;
118
119 priority = amdgpu_to_sched_priority(args->in.priority);
120 if (priority == DRM_SCHED_PRIORITY_INVALID)
121 return -EINVAL;
122
123 switch (args->in.op) {
124 case AMDGPU_SCHED_OP_PROCESS_PRIORITY_OVERRIDE:
125 r = amdgpu_sched_process_priority_override(adev,
126 args->in.fd,
127 priority);
128 break;
129 case AMDGPU_SCHED_OP_CONTEXT_PRIORITY_OVERRIDE:
130 r = amdgpu_sched_context_priority_override(adev,
131 args->in.fd,
132 args->in.ctx_id,
133 priority);
134 break;
135 default:
136 DRM_ERROR("Invalid sched op specified: %d\n", args->in.op);
137 r = -EINVAL;
138 break;
139 }
140
141 return r;
142}