1 /* $NetBSD: amdgpu_sched.c,v 1.3 2021/12/18 23:44:58 riastradh Exp $ */
2
3 /*
4 * Copyright 2017 Valve Corporation
5 *
6 * Permission is hereby granted, free of charge, to any person obtaining a
7 * copy of this software and associated documentation files (the "Software"),
8 * to deal in the Software without restriction, including without limitation
9 * the rights to use, copy, modify, merge, publish, distribute, sublicense,
10 * and/or sell copies of the Software, and to permit persons to whom the
11 * Software is furnished to do so, subject to the following conditions:
12 *
13 * The above copyright notice and this permission notice shall be included in
14 * all copies or substantial portions of the Software.
15 *
16 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
17 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
18 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
19 * THE COPYRIGHT HOLDER(S) OR AUTHOR(S) BE LIABLE FOR ANY CLAIM, DAMAGES OR
20 * OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE,
21 * ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
22 * OTHER DEALINGS IN THE SOFTWARE.
23 *
24 * Authors: Andres Rodriguez <andresx7@gmail.com>
25 */
26
27 #include <sys/cdefs.h>
28 __KERNEL_RCSID(0, "$NetBSD: amdgpu_sched.c,v 1.3 2021/12/18 23:44:58 riastradh Exp $");
29
30 #include <linux/fdtable.h>
31 #include <linux/file.h>
32 #include <linux/pid.h>
33
34 #include <drm/amdgpu_drm.h>
35
36 #include "amdgpu.h"
37
38 #include "amdgpu_vm.h"
39
amdgpu_to_sched_priority(int amdgpu_priority)40 enum drm_sched_priority amdgpu_to_sched_priority(int amdgpu_priority)
41 {
42 switch (amdgpu_priority) {
43 case AMDGPU_CTX_PRIORITY_VERY_HIGH:
44 return DRM_SCHED_PRIORITY_HIGH_HW;
45 case AMDGPU_CTX_PRIORITY_HIGH:
46 return DRM_SCHED_PRIORITY_HIGH_SW;
47 case AMDGPU_CTX_PRIORITY_NORMAL:
48 return DRM_SCHED_PRIORITY_NORMAL;
49 case AMDGPU_CTX_PRIORITY_LOW:
50 case AMDGPU_CTX_PRIORITY_VERY_LOW:
51 return DRM_SCHED_PRIORITY_LOW;
52 case AMDGPU_CTX_PRIORITY_UNSET:
53 return DRM_SCHED_PRIORITY_UNSET;
54 default:
55 WARN(1, "Invalid context priority %d\n", amdgpu_priority);
56 return DRM_SCHED_PRIORITY_INVALID;
57 }
58 }
59
amdgpu_sched_process_priority_override(struct amdgpu_device * adev,int fd,enum drm_sched_priority priority)60 static int amdgpu_sched_process_priority_override(struct amdgpu_device *adev,
61 int fd,
62 enum drm_sched_priority priority)
63 {
64 struct fd f = fdget(fd);
65 struct amdgpu_fpriv *fpriv;
66 struct amdgpu_ctx *ctx;
67 uint32_t id;
68 int r;
69
70 if (!f.file)
71 return -EINVAL;
72
73 r = amdgpu_file_to_fpriv(f.file, &fpriv);
74 if (r) {
75 fdput(f);
76 return r;
77 }
78
79 idr_for_each_entry(&fpriv->ctx_mgr.ctx_handles, ctx, id)
80 amdgpu_ctx_priority_override(ctx, priority);
81
82 fdput(f);
83 return 0;
84 }
85
amdgpu_sched_context_priority_override(struct amdgpu_device * adev,int fd,unsigned ctx_id,enum drm_sched_priority priority)86 static int amdgpu_sched_context_priority_override(struct amdgpu_device *adev,
87 int fd,
88 unsigned ctx_id,
89 enum drm_sched_priority priority)
90 {
91 struct fd f = fdget(fd);
92 struct amdgpu_fpriv *fpriv;
93 struct amdgpu_ctx *ctx;
94 int r;
95
96 if (!f.file)
97 return -EINVAL;
98
99 r = amdgpu_file_to_fpriv(f.file, &fpriv);
100 if (r) {
101 fdput(f);
102 return r;
103 }
104
105 ctx = amdgpu_ctx_get(fpriv, ctx_id);
106
107 if (!ctx) {
108 fdput(f);
109 return -EINVAL;
110 }
111
112 amdgpu_ctx_priority_override(ctx, priority);
113 amdgpu_ctx_put(ctx);
114 fdput(f);
115
116 return 0;
117 }
118
amdgpu_sched_ioctl(struct drm_device * dev,void * data,struct drm_file * filp)119 int amdgpu_sched_ioctl(struct drm_device *dev, void *data,
120 struct drm_file *filp)
121 {
122 union drm_amdgpu_sched *args = data;
123 struct amdgpu_device *adev = dev->dev_private;
124 enum drm_sched_priority priority;
125 int r;
126
127 priority = amdgpu_to_sched_priority(args->in.priority);
128 if (priority == DRM_SCHED_PRIORITY_INVALID)
129 return -EINVAL;
130
131 switch (args->in.op) {
132 case AMDGPU_SCHED_OP_PROCESS_PRIORITY_OVERRIDE:
133 r = amdgpu_sched_process_priority_override(adev,
134 args->in.fd,
135 priority);
136 break;
137 case AMDGPU_SCHED_OP_CONTEXT_PRIORITY_OVERRIDE:
138 r = amdgpu_sched_context_priority_override(adev,
139 args->in.fd,
140 args->in.ctx_id,
141 priority);
142 break;
143 default:
144 DRM_ERROR("Invalid sched op specified: %d\n", args->in.op);
145 r = -EINVAL;
146 break;
147 }
148
149 return r;
150 }
151