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
|
/*
* Copyright © 2008 Dave Airlie
* Copyright © 2008 Jérôme Glisse
* 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 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.
*
* The above copyright notice and this permission notice (including the
* next paragraph) shall be included in all copies or substantial portions
* of the Software.
*/
/*
* Authors:
* Dave Airlie
* Jérôme Glisse <glisse@freedesktop.org>
*/
#include <stdio.h>
#include <stdint.h>
#include <stdlib.h>
#include <string.h>
#include <sys/mman.h>
#include <sys/ioctl.h>
#include "xf86drm.h"
#include "drm.h"
#include "radeon_drm.h"
#include "radeon_bo.h"
#include "radeon_bo_gem.h"
struct radeon_bo_gem {
struct radeon_bo base;
uint32_t name;
int map_count;
};
struct bo_manager_gem {
struct radeon_bo_manager base;
};
static struct radeon_bo *bo_open(struct radeon_bo_manager *bom,
uint32_t handle,
uint32_t size,
uint32_t alignment,
uint32_t domains,
uint32_t flags)
{
struct radeon_bo_gem *bo;
int r;
bo = (struct radeon_bo_gem*)calloc(1, sizeof(struct radeon_bo_gem));
if (bo == NULL) {
return NULL;
}
bo->base.bom = bom;
bo->base.handle = 0;
bo->base.size = size;
bo->base.alignment = alignment;
bo->base.domains = domains;
bo->base.flags = flags;
bo->base.ptr = NULL;
bo->map_count = 0;
if (handle) {
struct drm_gem_open open_arg;
memset(&open_arg, 0, sizeof(open_arg));
open_arg.name = handle;
r = ioctl(bom->fd, DRM_IOCTL_GEM_OPEN, &open_arg);
if (r != 0) {
free(bo);
return NULL;
}
bo->base.handle = open_arg.handle;
bo->base.size = open_arg.size;
bo->name = handle;
} else {
struct drm_radeon_gem_create args;
args.size = size;
args.alignment = alignment;
args.initial_domain = bo->base.domains;
args.no_backing_store = 0;
args.handle = 0;
r = drmCommandWriteRead(bom->fd, DRM_RADEON_GEM_CREATE,
&args, sizeof(args));
bo->base.handle = args.handle;
if (r) {
fprintf(stderr, "Failed to allocate :\n");
fprintf(stderr, " size : %d bytes\n", size);
fprintf(stderr, " alignment : %d bytes\n", alignment);
fprintf(stderr, " domains : %d\n", bo->base.domains);
free(bo);
return NULL;
}
}
radeon_bo_ref((struct radeon_bo*)bo);
return (struct radeon_bo*)bo;
}
static void bo_ref(struct radeon_bo *bo)
{
}
static struct radeon_bo *bo_unref(struct radeon_bo *bo)
{
struct radeon_bo_gem *bo_gem = (struct radeon_bo_gem*)bo;
struct drm_gem_close args;
if (bo == NULL) {
return NULL;
}
if (bo->cref) {
return bo;
}
if (bo_gem->map_count) {
munmap(bo->ptr, bo->size);
}
/* close object */
args.handle = bo->handle;
ioctl(bo->bom->fd, DRM_IOCTL_GEM_CLOSE, &args);
memset(bo_gem, 0, sizeof(struct radeon_bo_gem));
free(bo_gem);
return NULL;
}
static int bo_map(struct radeon_bo *bo, int write)
{
struct radeon_bo_gem *bo_gem = (struct radeon_bo_gem*)bo;
struct drm_radeon_gem_mmap args;
int r;
if (bo_gem->map_count++ != 0) {
return 0;
}
bo->ptr = NULL;
args.handle = bo->handle;
args.offset = 0;
args.size = (uint64_t)bo->size;
r = drmCommandWriteRead(bo->bom->fd,
DRM_RADEON_GEM_MMAP,
&args,
sizeof(args));
if (!r) {
bo->ptr = (void *)(unsigned long)args.addr_ptr;
} else {
fprintf(stderr, "error mapping %p 0x%08X (error = %d)\n",
bo, bo->handle, r);
}
return r;
}
static int bo_unmap(struct radeon_bo *bo)
{
struct radeon_bo_gem *bo_gem = (struct radeon_bo_gem*)bo;
if (--bo_gem->map_count > 0) {
return 0;
}
munmap(bo->ptr, bo->size);
bo->ptr = NULL;
return 0;
}
static struct radeon_bo_funcs bo_gem_funcs = {
bo_open,
bo_ref,
bo_unref,
bo_map,
bo_unmap
};
struct radeon_bo_manager *radeon_bo_manager_gem_ctor(int fd)
{
struct bo_manager_gem *bomg;
bomg = (struct bo_manager_gem*)calloc(1, sizeof(struct bo_manager_gem));
if (bomg == NULL) {
return NULL;
}
bomg->base.funcs = &bo_gem_funcs;
bomg->base.fd = fd;
return (struct radeon_bo_manager*)bomg;
}
void radeon_bo_manager_gem_dtor(struct radeon_bo_manager *bom)
{
struct bo_manager_gem *bomg = (struct bo_manager_gem*)bom;
if (bom == NULL) {
return;
}
free(bomg);
}
|
