1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
|
/* exynos.c
*
* Copyright 2009 Samsung Electronics Co., Ltd.
* Authors:
* SooChan Lim <sc1.lim@samsung.com>
* Sangjin LEE <lsj119@samsung.com>
*
* This program is free software; you can redistribute it and/or modify it
* under the terms of the GNU General Public License as published by the
* Free Software Foundation; either version 2 of the License, or (at your
* option) any later version.
*/
#ifdef HAVE_CONFIG_H
#include "config.h"
#endif
#include <errno.h>
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include "internal.h"
#include <sys/mman.h>
#include <sys/ioctl.h>
#include "xf86drm.h"
#include "libdrm.h"
#include "exynos_drm.h"
struct exynos_bo
{
struct kms_bo base;
unsigned map_count;
};
static int
exynos_get_prop(struct kms_driver *kms, unsigned key, unsigned *out)
{
switch (key) {
case KMS_BO_TYPE:
*out = KMS_BO_TYPE_SCANOUT_X8R8G8B8 | KMS_BO_TYPE_CURSOR_64X64_A8R8G8B8;
break;
default:
return -EINVAL;
}
return 0;
}
static int
exynos_destroy(struct kms_driver *kms)
{
free(kms);
return 0;
}
static int
exynos_bo_create(struct kms_driver *kms,
const unsigned width, const unsigned height,
const enum kms_bo_type type, const unsigned *attr,
struct kms_bo **out)
{
struct drm_exynos_gem_create arg;
unsigned size, pitch;
struct exynos_bo *bo;
int i, ret;
for (i = 0; attr[i]; i += 2) {
switch (attr[i]) {
case KMS_WIDTH:
case KMS_HEIGHT:
case KMS_BO_TYPE:
break;
default:
return -EINVAL;
}
}
bo = calloc(1, sizeof(*bo));
if (!bo)
return -ENOMEM;
if (type == KMS_BO_TYPE_CURSOR_64X64_A8R8G8B8) {
pitch = 64 * 4;
size = 64 * 64 * 4;
} else if (type == KMS_BO_TYPE_SCANOUT_X8R8G8B8) {
pitch = width * 4;
pitch = (pitch + 512 - 1) & ~(512 - 1);
size = pitch * ((height + 4 - 1) & ~(4 - 1));
} else {
return -EINVAL;
}
memset(&arg, 0, sizeof(arg));
arg.size = size;
ret = drmCommandWriteRead(kms->fd, DRM_EXYNOS_GEM_CREATE, &arg, sizeof(arg));
if (ret)
goto err_free;
bo->base.kms = kms;
bo->base.handle = arg.handle;
bo->base.size = size;
bo->base.pitch = pitch;
*out = &bo->base;
return 0;
err_free:
free(bo);
return ret;
}
static int
exynos_bo_get_prop(struct kms_bo *bo, unsigned key, unsigned *out)
{
switch (key) {
default:
return -EINVAL;
}
}
static int
exynos_bo_map(struct kms_bo *_bo, void **out)
{
struct exynos_bo *bo = (struct exynos_bo *)_bo;
struct drm_mode_map_dumb arg;
void *map = NULL;
int ret;
if (bo->base.ptr) {
bo->map_count++;
*out = bo->base.ptr;
return 0;
}
memset(&arg, 0, sizeof(arg));
arg.handle = bo->base.handle;
ret = drmIoctl(bo->base.kms->fd, DRM_IOCTL_MODE_MAP_DUMB, &arg);
if (ret)
return ret;
map = drm_mmap(0, bo->base.size, PROT_READ | PROT_WRITE, MAP_SHARED, bo->base.kms->fd, arg.offset);
if (map == MAP_FAILED)
return -errno;
bo->base.ptr = map;
bo->map_count++;
*out = bo->base.ptr;
return 0;
}
static int
exynos_bo_unmap(struct kms_bo *_bo)
{
struct exynos_bo *bo = (struct exynos_bo *)_bo;
bo->map_count--;
return 0;
}
static int
exynos_bo_destroy(struct kms_bo *_bo)
{
struct exynos_bo *bo = (struct exynos_bo *)_bo;
struct drm_gem_close arg;
int ret;
if (bo->base.ptr) {
/* XXX Sanity check map_count */
munmap(bo->base.ptr, bo->base.size);
bo->base.ptr = NULL;
}
memset(&arg, 0, sizeof(arg));
arg.handle = bo->base.handle;
ret = drmIoctl(bo->base.kms->fd, DRM_IOCTL_GEM_CLOSE, &arg);
if (ret)
return -errno;
free(bo);
return 0;
}
drm_private int
exynos_create(int fd, struct kms_driver **out)
{
struct kms_driver *kms;
kms = calloc(1, sizeof(*kms));
if (!kms)
return -ENOMEM;
kms->fd = fd;
kms->bo_create = exynos_bo_create;
kms->bo_map = exynos_bo_map;
kms->bo_unmap = exynos_bo_unmap;
kms->bo_get_prop = exynos_bo_get_prop;
kms->bo_destroy = exynos_bo_destroy;
kms->get_prop = exynos_get_prop;
kms->destroy = exynos_destroy;
*out = kms;
return 0;
}
|
