1 /*
2 * Copyright © 2012, 2013 Thierry Reding
3 * Copyright © 2013 Erik Faye-Lund
4 * Copyright © 2014-2021 NVIDIA 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
25 #ifdef HAVE_CONFIG_H
26 # include "config.h"
27 #endif
28
29 #include <errno.h>
30 #include <string.h>
31
32 #include <sys/ioctl.h>
33
34 #include "private.h"
35
36 drm_public int
drm_tegra_channel_open(struct drm_tegra * drm,enum drm_tegra_class client,struct drm_tegra_channel ** channelp)37 drm_tegra_channel_open(struct drm_tegra *drm,
38 enum drm_tegra_class client,
39 struct drm_tegra_channel **channelp)
40 {
41 struct drm_tegra_channel_open args;
42 struct drm_tegra_channel *channel;
43 enum host1x_class class;
44 int err;
45
46 switch (client) {
47 case DRM_TEGRA_HOST1X:
48 class = HOST1X_CLASS_HOST1X;
49 break;
50
51 case DRM_TEGRA_GR2D:
52 class = HOST1X_CLASS_GR2D;
53 break;
54
55 case DRM_TEGRA_GR3D:
56 class = HOST1X_CLASS_GR3D;
57 break;
58
59 case DRM_TEGRA_VIC:
60 class = HOST1X_CLASS_VIC;
61 break;
62
63 default:
64 return -EINVAL;
65 }
66
67 channel = calloc(1, sizeof(*channel));
68 if (!channel)
69 return -ENOMEM;
70
71 channel->drm = drm;
72
73 memset(&args, 0, sizeof(args));
74 args.host1x_class = class;
75
76 err = ioctl(drm->fd, DRM_IOCTL_TEGRA_CHANNEL_OPEN, &args);
77 if (err < 0) {
78 free(channel);
79 return -errno;
80 }
81
82 channel->context = args.context;
83 channel->version = args.version;
84 channel->capabilities = args.capabilities;
85 channel->class = class;
86
87 switch (channel->version) {
88 case 0x20:
89 case 0x30:
90 case 0x35:
91 case 0x40:
92 case 0x21:
93 channel->cond_shift = 8;
94 break;
95
96 case 0x18:
97 case 0x19:
98 channel->cond_shift = 10;
99 break;
100
101 default:
102 return -ENOTSUP;
103 }
104
105 *channelp = channel;
106
107 return 0;
108 }
109
drm_tegra_channel_close(struct drm_tegra_channel * channel)110 drm_public int drm_tegra_channel_close(struct drm_tegra_channel *channel)
111 {
112 struct drm_tegra_channel_close args;
113 struct drm_tegra *drm;
114 int err;
115
116 if (!channel)
117 return -EINVAL;
118
119 drm = channel->drm;
120
121 memset(&args, 0, sizeof(args));
122 args.context = channel->context;
123
124 err = ioctl(drm->fd, DRM_IOCTL_TEGRA_CHANNEL_CLOSE, &args);
125 if (err < 0)
126 return -errno;
127
128 free(channel);
129
130 return 0;
131 }
132
133 drm_public unsigned int
drm_tegra_channel_get_version(struct drm_tegra_channel * channel)134 drm_tegra_channel_get_version(struct drm_tegra_channel *channel)
135 {
136 return channel->version;
137 }
138
139 drm_public int
drm_tegra_channel_map(struct drm_tegra_channel * channel,struct drm_tegra_bo * bo,uint32_t flags,struct drm_tegra_mapping ** mapp)140 drm_tegra_channel_map(struct drm_tegra_channel *channel,
141 struct drm_tegra_bo *bo, uint32_t flags,
142 struct drm_tegra_mapping **mapp)
143 {
144 struct drm_tegra *drm = channel->drm;
145 struct drm_tegra_channel_map args;
146 struct drm_tegra_mapping *map;
147 int err;
148
149 if (!drm || !bo || !mapp)
150 return -EINVAL;
151
152 map = calloc(1, sizeof(*map));
153 if (!map)
154 return -ENOMEM;
155
156 memset(&args, 0, sizeof(args));
157 args.context = channel->context;
158 args.handle = bo->handle;
159 args.flags = flags;
160
161 err = ioctl(drm->fd, DRM_IOCTL_TEGRA_CHANNEL_MAP, &args);
162 if (err < 0) {
163 free(map);
164 return -errno;
165 }
166
167 map->channel = channel;
168 map->id = args.mapping;
169 *mapp = map;
170
171 return 0;
172 }
173
174 drm_public int
drm_tegra_channel_unmap(struct drm_tegra_mapping * map)175 drm_tegra_channel_unmap(struct drm_tegra_mapping *map)
176 {
177 struct drm_tegra_channel *channel = map->channel;
178 struct drm_tegra *drm = channel->drm;
179 struct drm_tegra_channel_unmap args;
180 int err;
181
182 if (!channel || !map)
183 return -EINVAL;
184
185 memset(&args, 0, sizeof(args));
186 args.context = channel->context;
187 args.mapping = map->id;
188
189 err = ioctl(drm->fd, DRM_IOCTL_TEGRA_CHANNEL_UNMAP, &args);
190 if (err < 0)
191 return -errno;
192
193 free(map);
194 return 0;
195 }
196