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
237
|
/**************************************************************************
*
* Copyright (c) 2006-2008 Tungsten Graphics, Inc., Cedar Park, TX., USA
* All Rights Reserved.
* Copyright (c) 2009 VMware, Inc., Palo Alto, CA., USA
* All Rights Reserved.
*
* This program is free software; you can redistribute it and/or modify it
* under the terms and conditions of the GNU General Public License,
* version 2, as published by the Free Software Foundation.
*
* This program is distributed in the hope it will be useful, but WITHOUT
* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
* FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for
* more details.
*
* You should have received a copy of the GNU General Public License along with
* this program; if not, write to the Free Software Foundation, Inc.,
* 51 Franklin St - Fifth Floor, Boston, MA 02110-1301 USA.
*
**************************************************************************/
/*
* Authors: Thomas Hellstrom <thomas-at-tungstengraphics-dot-com>
*/
#include <drm/drmP.h>
#include "psb_ttm_fence_user.h"
#include "ttm/ttm_object.h"
#include "psb_ttm_fence_driver.h"
#include "psb_ttm_userobj_api.h"
/**
* struct ttm_fence_user_object
*
* @base: The base object used for user-space visibility and refcounting.
*
* @fence: The fence object itself.
*
*/
struct ttm_fence_user_object {
struct ttm_base_object base;
struct ttm_fence_object fence;
};
static struct ttm_fence_user_object *ttm_fence_user_object_lookup(
struct ttm_object_file *tfile,
uint32_t handle)
{
struct ttm_base_object *base;
base = ttm_base_object_lookup(tfile, handle);
if (unlikely(base == NULL)) {
printk(KERN_ERR "Invalid fence handle 0x%08lx\n",
(unsigned long)handle);
return NULL;
}
if (unlikely(base->object_type != ttm_fence_type)) {
ttm_base_object_unref(&base);
printk(KERN_ERR "Invalid fence handle 0x%08lx\n",
(unsigned long)handle);
return NULL;
}
return container_of(base, struct ttm_fence_user_object, base);
}
/*
* The fence object destructor.
*/
static void ttm_fence_user_destroy(struct ttm_fence_object *fence)
{
struct ttm_fence_user_object *ufence =
container_of(fence, struct ttm_fence_user_object, fence);
ttm_mem_global_free(fence->fdev->mem_glob, sizeof(*ufence));
kfree(ufence);
}
/*
* The base object destructor. We basically unly unreference the
* attached fence object.
*/
static void ttm_fence_user_release(struct ttm_base_object **p_base)
{
struct ttm_fence_user_object *ufence;
struct ttm_base_object *base = *p_base;
struct ttm_fence_object *fence;
*p_base = NULL;
if (unlikely(base == NULL))
return;
ufence = container_of(base, struct ttm_fence_user_object, base);
fence = &ufence->fence;
ttm_fence_object_unref(&fence);
}
int
ttm_fence_user_create(struct ttm_fence_device *fdev,
struct ttm_object_file *tfile,
uint32_t fence_class,
uint32_t fence_types,
uint32_t create_flags,
struct ttm_fence_object **fence,
uint32_t *user_handle)
{
int ret;
struct ttm_fence_object *tmp;
struct ttm_fence_user_object *ufence;
ret = ttm_mem_global_alloc(fdev->mem_glob,
sizeof(*ufence),
false,
false);
if (unlikely(ret != 0))
return -ENOMEM;
ufence = kmalloc(sizeof(*ufence), GFP_KERNEL);
if (unlikely(ufence == NULL)) {
ttm_mem_global_free(fdev->mem_glob, sizeof(*ufence));
return -ENOMEM;
}
ret = ttm_fence_object_init(fdev,
fence_class,
fence_types, create_flags,
&ttm_fence_user_destroy, &ufence->fence);
if (unlikely(ret != 0))
goto out_err0;
/*
* One fence ref is held by the fence ptr we return.
* The other one by the base object. Need to up the
* fence refcount before we publish this object to
* user-space.
*/
tmp = ttm_fence_object_ref(&ufence->fence);
ret = ttm_base_object_init(tfile, &ufence->base,
false, ttm_fence_type,
&ttm_fence_user_release, NULL);
if (unlikely(ret != 0))
goto out_err1;
*fence = &ufence->fence;
*user_handle = ufence->base.hash.key;
return 0;
out_err1:
ttm_fence_object_unref(&tmp);
tmp = &ufence->fence;
ttm_fence_object_unref(&tmp);
return ret;
out_err0:
ttm_mem_global_free(fdev->mem_glob, sizeof(*ufence));
kfree(ufence);
return ret;
}
int ttm_fence_signaled_ioctl(struct ttm_object_file *tfile, void *data)
{
int ret;
union ttm_fence_signaled_arg *arg = data;
struct ttm_fence_object *fence;
struct ttm_fence_info info;
struct ttm_fence_user_object *ufence;
struct ttm_base_object *base;
ret = 0;
ufence = ttm_fence_user_object_lookup(tfile, arg->req.handle);
if (unlikely(ufence == NULL))
return -EINVAL;
fence = &ufence->fence;
if (arg->req.flush) {
ret = ttm_fence_object_flush(fence, arg->req.fence_type);
if (unlikely(ret != 0))
goto out;
}
info = ttm_fence_get_info(fence);
arg->rep.signaled_types = info.signaled_types;
arg->rep.fence_error = info.error;
out:
base = &ufence->base;
ttm_base_object_unref(&base);
return ret;
}
int ttm_fence_finish_ioctl(struct ttm_object_file *tfile, void *data)
{
int ret;
union ttm_fence_finish_arg *arg = data;
struct ttm_fence_user_object *ufence;
struct ttm_base_object *base;
struct ttm_fence_object *fence;
ret = 0;
ufence = ttm_fence_user_object_lookup(tfile, arg->req.handle);
if (unlikely(ufence == NULL))
return -EINVAL;
fence = &ufence->fence;
ret = ttm_fence_object_wait(fence,
arg->req.mode & TTM_FENCE_FINISH_MODE_LAZY,
true, arg->req.fence_type);
if (likely(ret == 0)) {
struct ttm_fence_info info = ttm_fence_get_info(fence);
arg->rep.signaled_types = info.signaled_types;
arg->rep.fence_error = info.error;
}
base = &ufence->base;
ttm_base_object_unref(&base);
return ret;
}
int ttm_fence_unref_ioctl(struct ttm_object_file *tfile, void *data)
{
struct ttm_fence_unref_arg *arg = data;
int ret = 0;
ret = ttm_ref_object_base_unref(tfile, arg->handle, ttm_fence_type);
return ret;
}
|
