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
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
|
/**********************************************************************
Copyright (c) Imagination Technologies Ltd.
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, sublicense, 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 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 NONINFRINGEMENT. IN NO EVENT SHALL THE
AUTHORS OR COPYRIGHT HOLDERS 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 <linux/version.h>
#include <asm/io.h>
#include <asm/page.h>
#if (LINUX_VERSION_CODE >= KERNEL_VERSION(2,6,22))
#include <asm/system.h>
#endif
#include <linux/mm.h>
#include <linux/slab.h>
#include <linux/vmalloc.h>
#include <linux/delay.h>
#include <linux/pci.h>
#include <linux/string.h>
#include <linux/sched.h>
#include <linux/interrupt.h>
#include <asm/hardirq.h>
#include <linux/timer.h>
#include <linux/capability.h>
#include <linux/sched.h>
#include <asm/uaccess.h>
#include "img_types.h"
#include "services_headers.h"
#include "mm.h"
#include "pvrmmap.h"
#include "mmap.h"
#include "env_data.h"
#include "proc.h"
#include "mutex.h"
#include "lock.h"
typedef struct PVRSRV_LINUX_EVENT_OBJECT_LIST_TAG
{
rwlock_t sLock;
struct list_head sList;
} PVRSRV_LINUX_EVENT_OBJECT_LIST;
typedef struct PVRSRV_LINUX_EVENT_OBJECT_TAG
{
atomic_t sTimeStamp;
IMG_UINT32 ui32TimeStampPrevious;
#if defined(DEBUG)
IMG_UINT ui32Stats;
#endif
wait_queue_head_t sWait;
struct list_head sList;
IMG_HANDLE hResItem;
PVRSRV_LINUX_EVENT_OBJECT_LIST *psLinuxEventObjectList;
} PVRSRV_LINUX_EVENT_OBJECT;
PVRSRV_ERROR LinuxEventObjectListCreate(IMG_HANDLE *phEventObjectList)
{
PVRSRV_LINUX_EVENT_OBJECT_LIST *psEvenObjectList;
if(OSAllocMem(PVRSRV_OS_NON_PAGEABLE_HEAP, sizeof(PVRSRV_LINUX_EVENT_OBJECT_LIST),
(IMG_VOID **)&psEvenObjectList, IMG_NULL,
"Linux Event Object List") != PVRSRV_OK)
{
PVR_DPF((PVR_DBG_ERROR, "LinuxEventObjectCreate: failed to allocate memory for event list"));
return PVRSRV_ERROR_OUT_OF_MEMORY;
}
INIT_LIST_HEAD(&psEvenObjectList->sList);
rwlock_init(&psEvenObjectList->sLock);
*phEventObjectList = (IMG_HANDLE *) psEvenObjectList;
return PVRSRV_OK;
}
PVRSRV_ERROR LinuxEventObjectListDestroy(IMG_HANDLE hEventObjectList)
{
PVRSRV_LINUX_EVENT_OBJECT_LIST *psEvenObjectList = (PVRSRV_LINUX_EVENT_OBJECT_LIST *) hEventObjectList ;
if(psEvenObjectList)
{
if (!list_empty(&psEvenObjectList->sList))
{
PVR_DPF((PVR_DBG_ERROR, "LinuxEventObjectListDestroy: Event List is not empty"));
return PVRSRV_ERROR_GENERIC;
}
OSFreeMem(PVRSRV_OS_NON_PAGEABLE_HEAP, sizeof(PVRSRV_LINUX_EVENT_OBJECT_LIST), psEvenObjectList, IMG_NULL);
}
return PVRSRV_OK;
}
PVRSRV_ERROR LinuxEventObjectDelete(IMG_HANDLE hOSEventObjectList, IMG_HANDLE hOSEventObject)
{
if(hOSEventObjectList)
{
if(hOSEventObject)
{
PVRSRV_LINUX_EVENT_OBJECT *psLinuxEventObject = (PVRSRV_LINUX_EVENT_OBJECT *)hOSEventObject;
#if defined(DEBUG)
PVR_DPF((PVR_DBG_MESSAGE, "LinuxEventObjectListDelete: Event object waits: %lu", psLinuxEventObject->ui32Stats));
#endif
if(ResManFreeResByPtr(psLinuxEventObject->hResItem) != PVRSRV_OK)
{
return PVRSRV_ERROR_GENERIC;
}
return PVRSRV_OK;
}
}
return PVRSRV_ERROR_GENERIC;
}
static PVRSRV_ERROR LinuxEventObjectDeleteCallback(IMG_PVOID pvParam, IMG_UINT32 ui32Param)
{
PVRSRV_LINUX_EVENT_OBJECT *psLinuxEventObject = pvParam;
PVRSRV_LINUX_EVENT_OBJECT_LIST *psLinuxEventObjectList = psLinuxEventObject->psLinuxEventObjectList;
PVR_UNREFERENCED_PARAMETER(ui32Param);
write_lock_bh(&psLinuxEventObjectList->sLock);
list_del(&psLinuxEventObject->sList);
write_unlock_bh(&psLinuxEventObjectList->sLock);
#if defined(DEBUG)
PVR_DPF((PVR_DBG_MESSAGE, "LinuxEventObjectDeleteCallback: Event object waits: %lu", psLinuxEventObject->ui32Stats));
#endif
OSFreeMem(PVRSRV_OS_NON_PAGEABLE_HEAP, sizeof(PVRSRV_LINUX_EVENT_OBJECT), psLinuxEventObject, IMG_NULL);
return PVRSRV_OK;
}
PVRSRV_ERROR LinuxEventObjectAdd(IMG_HANDLE hOSEventObjectList, IMG_HANDLE *phOSEventObject)
{
PVRSRV_LINUX_EVENT_OBJECT *psLinuxEventObject;
PVRSRV_LINUX_EVENT_OBJECT_LIST *psLinuxEventObjectList = (PVRSRV_LINUX_EVENT_OBJECT_LIST*)hOSEventObjectList;
IMG_UINT32 ui32PID = OSGetCurrentProcessIDKM();
PVRSRV_PER_PROCESS_DATA *psPerProc;
psPerProc = PVRSRVPerProcessData(ui32PID);
if (psPerProc == IMG_NULL)
{
PVR_DPF((PVR_DBG_ERROR, "LinuxEventObjectAdd: Couldn't find per-process data"));
return PVRSRV_ERROR_OUT_OF_MEMORY;
}
if(OSAllocMem(PVRSRV_OS_NON_PAGEABLE_HEAP, sizeof(PVRSRV_LINUX_EVENT_OBJECT),
(IMG_VOID **)&psLinuxEventObject, IMG_NULL,
"Linux Event Object") != PVRSRV_OK)
{
PVR_DPF((PVR_DBG_ERROR, "LinuxEventObjectAdd: failed to allocate memory "));
return PVRSRV_ERROR_OUT_OF_MEMORY;
}
INIT_LIST_HEAD(&psLinuxEventObject->sList);
atomic_set(&psLinuxEventObject->sTimeStamp, 0);
psLinuxEventObject->ui32TimeStampPrevious = 0;
#if defined(DEBUG)
psLinuxEventObject->ui32Stats = 0;
#endif
init_waitqueue_head(&psLinuxEventObject->sWait);
psLinuxEventObject->psLinuxEventObjectList = psLinuxEventObjectList;
psLinuxEventObject->hResItem = ResManRegisterRes(psPerProc->hResManContext,
RESMAN_TYPE_EVENT_OBJECT,
psLinuxEventObject,
0,
&LinuxEventObjectDeleteCallback);
write_lock_bh(&psLinuxEventObjectList->sLock);
list_add(&psLinuxEventObject->sList, &psLinuxEventObjectList->sList);
write_unlock_bh(&psLinuxEventObjectList->sLock);
*phOSEventObject = psLinuxEventObject;
return PVRSRV_OK;
}
PVRSRV_ERROR LinuxEventObjectSignal(IMG_HANDLE hOSEventObjectList)
{
PVRSRV_LINUX_EVENT_OBJECT *psLinuxEventObject;
PVRSRV_LINUX_EVENT_OBJECT_LIST *psLinuxEventObjectList = (PVRSRV_LINUX_EVENT_OBJECT_LIST*)hOSEventObjectList;
struct list_head *psListEntry, *psListEntryTemp, *psList;
psList = &psLinuxEventObjectList->sList;
list_for_each_safe(psListEntry, psListEntryTemp, psList)
{
psLinuxEventObject = (PVRSRV_LINUX_EVENT_OBJECT *)list_entry(psListEntry, PVRSRV_LINUX_EVENT_OBJECT, sList);
atomic_inc(&psLinuxEventObject->sTimeStamp);
wake_up_interruptible(&psLinuxEventObject->sWait);
}
return PVRSRV_OK;
}
PVRSRV_ERROR LinuxEventObjectWait(IMG_HANDLE hOSEventObject, IMG_UINT32 ui32MSTimeout)
{
IMG_UINT32 ui32TimeStamp;
DEFINE_WAIT(sWait);
PVRSRV_LINUX_EVENT_OBJECT *psLinuxEventObject = (PVRSRV_LINUX_EVENT_OBJECT *) hOSEventObject;
IMG_UINT32 ui32TimeOutJiffies = msecs_to_jiffies(ui32MSTimeout);
do
{
prepare_to_wait(&psLinuxEventObject->sWait, &sWait, TASK_INTERRUPTIBLE);
ui32TimeStamp = atomic_read(&psLinuxEventObject->sTimeStamp);
if(psLinuxEventObject->ui32TimeStampPrevious != ui32TimeStamp)
{
break;
}
mutex_unlock(&gPVRSRVLock);
ui32TimeOutJiffies = (IMG_UINT32)schedule_timeout((IMG_INT32)ui32TimeOutJiffies);
mutex_lock(&gPVRSRVLock);
#if defined(DEBUG)
psLinuxEventObject->ui32Stats++;
#endif
} while (ui32TimeOutJiffies);
finish_wait(&psLinuxEventObject->sWait, &sWait);
psLinuxEventObject->ui32TimeStampPrevious = ui32TimeStamp;
return ui32TimeOutJiffies ? PVRSRV_OK : PVRSRV_ERROR_TIMEOUT;
}
|
