1 /*
2 * Copyright 2007 Nouveau Project
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 AUTHORS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY,
18 * WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF
19 * OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
20 * SOFTWARE.
21 */
23 #include <stdio.h>
24 #include <stdlib.h>
25 #include <errno.h>
27 #include "nouveau_private.h"
29 #if NOUVEAU_DRM_HEADER_PATCHLEVEL != 15
30 #error nouveau_drm.h does not match expected patchlevel, update libdrm.
31 #endif
33 int
34 nouveau_device_open_existing(struct nouveau_device **dev, int close,
35 int fd, drm_context_t ctx)
36 {
37 struct nouveau_device_priv *nvdev;
38 drmVersionPtr ver;
39 uint64_t value;
40 int ret;
42 if (!dev || *dev)
43 return -EINVAL;
45 ver = drmGetVersion(fd);
46 if (!ver || ver->version_patchlevel != NOUVEAU_DRM_HEADER_PATCHLEVEL)
47 return -EINVAL;
48 drmFreeVersion(ver);
50 nvdev = calloc(1, sizeof(*nvdev));
51 if (!nvdev)
52 return -ENOMEM;
53 nvdev->fd = fd;
54 nvdev->ctx = ctx;
55 nvdev->needs_close = close;
57 ret = drmCommandNone(nvdev->fd, DRM_NOUVEAU_CARD_INIT);
58 if (ret) {
59 nouveau_device_close((void *)&nvdev);
60 return ret;
61 }
63 ret = nouveau_device_get_param(&nvdev->base,
64 NOUVEAU_GETPARAM_VM_VRAM_BASE, &value);
65 if (ret) {
66 nouveau_device_close((void *)&nvdev);
67 return ret;
68 }
69 nvdev->base.vm_vram_base = value;
71 ret = nouveau_device_get_param(&nvdev->base,
72 NOUVEAU_GETPARAM_FB_SIZE, &value);
73 if (ret) {
74 nouveau_device_close((void *)&nvdev);
75 return ret;
76 }
77 nvdev->base.vm_vram_size = value;
79 ret = nouveau_device_get_param(&nvdev->base,
80 NOUVEAU_GETPARAM_AGP_SIZE, &value);
81 if (ret) {
82 nouveau_device_close((void *)&nvdev);
83 return ret;
84 }
85 nvdev->base.vm_gart_size = value;
87 ret = nouveau_bo_init(&nvdev->base);
88 if (ret) {
89 nouveau_device_close((void *)&nvdev);
90 return ret;
91 }
93 ret = nouveau_device_get_param(&nvdev->base,
94 NOUVEAU_GETPARAM_CHIPSET_ID, &value);
95 if (ret) {
96 nouveau_device_close((void *)&nvdev);
97 return ret;
98 }
99 nvdev->base.chipset = value;
101 *dev = &nvdev->base;
102 return 0;
103 }
105 int
106 nouveau_device_open(struct nouveau_device **dev, const char *busid)
107 {
108 drm_context_t ctx;
109 int fd, ret;
111 if (!dev || *dev)
112 return -EINVAL;
114 fd = drmOpen("nouveau", busid);
115 if (fd < 0)
116 return -EINVAL;
118 ret = drmCreateContext(fd, &ctx);
119 if (ret) {
120 drmClose(fd);
121 return ret;
122 }
124 ret = nouveau_device_open_existing(dev, 1, fd, ctx);
125 if (ret) {
126 drmDestroyContext(fd, ctx);
127 drmClose(fd);
128 return ret;
129 }
131 return 0;
132 }
134 void
135 nouveau_device_close(struct nouveau_device **dev)
136 {
137 struct nouveau_device_priv *nvdev;
139 if (!dev || !*dev)
140 return;
141 nvdev = nouveau_device(*dev);
142 *dev = NULL;
144 nouveau_bo_takedown(&nvdev->base);
146 if (nvdev->needs_close) {
147 drmDestroyContext(nvdev->fd, nvdev->ctx);
148 drmClose(nvdev->fd);
149 }
150 free(nvdev);
151 }
153 int
154 nouveau_device_get_param(struct nouveau_device *dev,
155 uint64_t param, uint64_t *value)
156 {
157 struct nouveau_device_priv *nvdev = nouveau_device(dev);
158 struct drm_nouveau_getparam g;
159 int ret;
161 if (!nvdev || !value)
162 return -EINVAL;
164 g.param = param;
165 ret = drmCommandWriteRead(nvdev->fd, DRM_NOUVEAU_GETPARAM,
166 &g, sizeof(g));
167 if (ret)
168 return ret;
170 *value = g.value;
171 return 0;
172 }
174 int
175 nouveau_device_set_param(struct nouveau_device *dev,
176 uint64_t param, uint64_t value)
177 {
178 struct nouveau_device_priv *nvdev = nouveau_device(dev);
179 struct drm_nouveau_setparam s;
180 int ret;
182 if (!nvdev)
183 return -EINVAL;
185 s.param = param;
186 s.value = value;
187 ret = drmCommandWriteRead(nvdev->fd, DRM_NOUVEAU_SETPARAM,
188 &s, sizeof(s));
189 if (ret)
190 return ret;
192 return 0;
193 }