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
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
|
/**************************************************************************
*
* Copyright © 2009 VMware, Inc., Palo Alto, CA., USA
* All Rights Reserved.
*
* Permission is hereby granted, free of charge, to any person obtaining a
* copy of this software and associated documentation files (the
* "Software"), to deal in the Software without restriction, including
* without limitation the rights to use, copy, modify, merge, publish,
* distribute, sub license, and/or sell copies of the Software, and to
* permit persons to whom the Software is furnished to do so, subject to
* the following conditions:
*
* The above copyright notice and this permission notice (including the
* next paragraph) shall be included in all copies or substantial portions
* of the Software.
*
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
* FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT. IN NO EVENT SHALL
* THE COPYRIGHT HOLDERS, AUTHORS AND/OR ITS SUPPLIERS BE LIABLE FOR ANY CLAIM,
* DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR
* OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE
* USE OR OTHER DEALINGS IN THE SOFTWARE.
*
**************************************************************************/
#include <errno.h>
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include "internal.h"
#include <sys/ioctl.h>
#include "xf86drm.h"
#include "libdrm_macros.h"
#include "i915_drm.h"
struct intel_bo
{
struct kms_bo base;
unsigned map_count;
};
static int
intel_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
intel_destroy(struct kms_driver *kms)
{
free(kms);
return 0;
}
static int
intel_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_i915_gem_create arg;
unsigned size, pitch;
struct intel_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 {
free(bo);
return -EINVAL;
}
memset(&arg, 0, sizeof(arg));
arg.size = size;
ret = drmCommandWriteRead(kms->fd, DRM_I915_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;
if (type == KMS_BO_TYPE_SCANOUT_X8R8G8B8 && pitch > 512) {
struct drm_i915_gem_set_tiling tile;
memset(&tile, 0, sizeof(tile));
tile.handle = bo->base.handle;
tile.tiling_mode = I915_TILING_X;
tile.stride = bo->base.pitch;
ret = drmCommandWriteRead(kms->fd, DRM_I915_GEM_SET_TILING, &tile, sizeof(tile));
#if 0
if (ret) {
kms_bo_destroy(out);
return ret;
}
#endif
}
return 0;
err_free:
free(bo);
return ret;
}
static int
intel_bo_get_prop(struct kms_bo *bo, unsigned key, unsigned *out)
{
switch (key) {
default:
return -EINVAL;
}
}
static int
intel_bo_map(struct kms_bo *_bo, void **out)
{
struct intel_bo *bo = (struct intel_bo *)_bo;
struct drm_i915_gem_mmap_gtt 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 = drmCommandWriteRead(bo->base.kms->fd, DRM_I915_GEM_MMAP_GTT, &arg, sizeof(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
intel_bo_unmap(struct kms_bo *_bo)
{
struct intel_bo *bo = (struct intel_bo *)_bo;
bo->map_count--;
return 0;
}
static int
intel_bo_destroy(struct kms_bo *_bo)
{
struct intel_bo *bo = (struct intel_bo *)_bo;
struct drm_gem_close arg;
int ret;
if (bo->base.ptr) {
/* XXX Sanity check map_count */
drm_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
intel_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 = intel_bo_create;
kms->bo_map = intel_bo_map;
kms->bo_unmap = intel_bo_unmap;
kms->bo_get_prop = intel_bo_get_prop;
kms->bo_destroy = intel_bo_destroy;
kms->get_prop = intel_get_prop;
kms->destroy = intel_destroy;
*out = kms;
return 0;
}
|
