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 */
22
23 #include <stdio.h>
24 #include <stdlib.h>
25 #include <errno.h>
26
27 #include "nouveau_private.h"
28
29 #if NOUVEAU_DRM_HEADER_PATCHLEVEL != 12
30 #error nouveau_drm.h does not match expected patchlevel, update libdrm.
31 #endif
32
33 int
nouveau_device_open_existing(struct nouveau_device ** dev,int close,int fd,drm_context_t ctx)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;
41
42 if (!dev || *dev)
43 return -EINVAL;
44
45 ver = drmGetVersion(fd);
46 if (!ver || ver->version_patchlevel != NOUVEAU_DRM_HEADER_PATCHLEVEL)
47 return -EINVAL;
48 drmFreeVersion(ver);
49
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;
56
57 ret = drmCommandNone(nvdev->fd, DRM_NOUVEAU_CARD_INIT);
58 if (ret) {
59 nouveau_device_close((void *)&nvdev);
60 return ret;
61 }
62
63 ret = nouveau_device_get_param(&nvdev->base,
64 NOUVEAU_GETPARAM_MM_ENABLED, &value);
65 if (ret) {
66 nouveau_device_close((void *)&nvdev);
67 return ret;
68 }
69 nvdev->mm_enabled = value;
70
71 ret = nouveau_device_get_param(&nvdev->base,
72 NOUVEAU_GETPARAM_VM_VRAM_BASE, &value);
73 if (ret) {
74 nouveau_device_close((void *)&nvdev);
75 return ret;
76 }
77 nvdev->base.vm_vram_base = value;
78
79 ret = nouveau_device_get_param(&nvdev->base,
80 NOUVEAU_GETPARAM_FB_SIZE, &value);
81 if (ret) {
82 nouveau_device_close((void *)&nvdev);
83 return ret;
84 }
85 nvdev->vram_aper_size = value;
86
87 ret = nouveau_device_get_param(&nvdev->base,
88 NOUVEAU_GETPARAM_AGP_SIZE, &value);
89 if (ret) {
90 nouveau_device_close((void *)&nvdev);
91 return ret;
92 }
93 nvdev->gart_aper_size = value;
94
95 ret = nouveau_bo_init(&nvdev->base);
96 if (ret) {
97 nouveau_device_close((void *)&nvdev);
98 return ret;
99 }
100
101 ret = nouveau_device_get_param(&nvdev->base,
102 NOUVEAU_GETPARAM_CHIPSET_ID, &value);
103 if (ret) {
104 nouveau_device_close((void *)&nvdev);
105 return ret;
106 }
107 nvdev->base.chipset = value;
108
109 *dev = &nvdev->base;
110 return 0;
111 }
112
113 int
nouveau_device_open(struct nouveau_device ** dev,const char * busid)114 nouveau_device_open(struct nouveau_device **dev, const char *busid)
115 {
116 drm_context_t ctx;
117 int fd, ret;
118
119 if (!dev || *dev)
120 return -EINVAL;
121
122 fd = drmOpen("nouveau", busid);
123 if (fd < 0)
124 return -EINVAL;
125
126 ret = drmCreateContext(fd, &ctx);
127 if (ret) {
128 drmClose(fd);
129 return ret;
130 }
131
132 ret = nouveau_device_open_existing(dev, 1, fd, ctx);
133 if (ret) {
134 drmDestroyContext(fd, ctx);
135 drmClose(fd);
136 return ret;
137 }
138
139 return 0;
140 }
141
142 void
nouveau_device_close(struct nouveau_device ** dev)143 nouveau_device_close(struct nouveau_device **dev)
144 {
145 struct nouveau_device_priv *nvdev;
146
147 if (!dev || !*dev)
148 return;
149 nvdev = nouveau_device(*dev);
150 *dev = NULL;
151
152 nouveau_bo_takedown(&nvdev->base);
153
154 if (nvdev->needs_close) {
155 drmDestroyContext(nvdev->fd, nvdev->ctx);
156 drmClose(nvdev->fd);
157 }
158 free(nvdev);
159 }
160
161 int
nouveau_device_get_param(struct nouveau_device * dev,uint64_t param,uint64_t * value)162 nouveau_device_get_param(struct nouveau_device *dev,
163 uint64_t param, uint64_t *value)
164 {
165 struct nouveau_device_priv *nvdev = nouveau_device(dev);
166 struct drm_nouveau_getparam g;
167 int ret;
168
169 if (!nvdev || !value)
170 return -EINVAL;
171
172 g.param = param;
173 ret = drmCommandWriteRead(nvdev->fd, DRM_NOUVEAU_GETPARAM,
174 &g, sizeof(g));
175 if (ret)
176 return ret;
177
178 *value = g.value;
179 return 0;
180 }
181
182 int
nouveau_device_set_param(struct nouveau_device * dev,uint64_t param,uint64_t value)183 nouveau_device_set_param(struct nouveau_device *dev,
184 uint64_t param, uint64_t value)
185 {
186 struct nouveau_device_priv *nvdev = nouveau_device(dev);
187 struct drm_nouveau_setparam s;
188 int ret;
189
190 if (!nvdev)
191 return -EINVAL;
192
193 s.param = param;
194 s.value = value;
195 ret = drmCommandWriteRead(nvdev->fd, DRM_NOUVEAU_SETPARAM,
196 &s, sizeof(s));
197 if (ret)
198 return ret;
199
200 return 0;
201 }
202
203