1 /**************************************************************************
2  *
3  * Copyright 2008 Tungsten Graphics, Inc., Cedar Park, TX., USA
4  * All Rights Reserved.
5  * Copyright 2009 VMware, Inc., Palo Alto, CA., USA
6  * All Rights Reserved.
7  *
8  * Permission is hereby granted, free of charge, to any person obtaining a
9  * copy of this software and associated documentation files (the
10  * "Software"), to deal in the Software without restriction, including
11  * without limitation the rights to use, copy, modify, merge, publish,
12  * distribute, sub license, and/or sell copies of the Software, and to
13  * permit persons to whom the Software is furnished to do so, subject to
14  * the following conditions:
15  *
16  * The above copyright notice and this permission notice (including the
17  * next paragraph) shall be included in all copies or substantial portions
18  * of the Software.
19  *
20  * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
21  * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
22  * FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT. IN NO EVENT SHALL
23  * THE COPYRIGHT HOLDERS, AUTHORS AND/OR ITS SUPPLIERS BE LIABLE FOR ANY CLAIM,
24  * DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR
25  * OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE
26  * USE OR OTHER DEALINGS IN THE SOFTWARE.
27  *
28  **************************************************************************/
29 /*
30  * Authors:
31  * Thomas Hellstr�m <thomas-at-tungstengraphics-dot-com>
32  */
33 
34 #ifndef _WSBM_DRIVER_H
35 #define _WSBM_DRIVER_H
36 #include <stdint.h>
37 #include "wsbm_util.h"
38 
39 #define WSBM_MUTEX_SPACE 16
40 #define WSBM_COND_SPACE  16
41 
42 struct _WsbmMutex
43 {
44     struct _WsbmThreadFuncs *func;
45     unsigned long storage[WSBM_MUTEX_SPACE];
46 };
47 
48 struct _WsbmCond
49 {
50     struct _WsbmThreadFuncs *func;
51     unsigned long storage[WSBM_COND_SPACE];
52 };
53 
54 struct _WsbmThreadFuncs
55 {
56     int (*mutexInit) (struct _WsbmMutex *, struct _WsbmThreadFuncs *);
57     void (*mutexFree) (struct _WsbmMutex *);
58     void (*mutexLock) (struct _WsbmMutex *);
59     void (*mutexUnlock) (struct _WsbmMutex *);
60     int (*condInit) (struct _WsbmCond *, struct _WsbmThreadFuncs *);
61     void (*condFree) (struct _WsbmCond *);
62     void (*condWait) (struct _WsbmCond *, struct _WsbmMutex *);
63     void (*condBroadcast) (struct _WsbmCond *);
64 };
65 
66 extern struct _WsbmThreadFuncs *wsbmCurThreadFunc;
67 
68 #define WSBM_MUTEX_INIT(_mutex)			\
69     wsbmThreadFuncs()->mutexInit(_mutex,wsbmThreadFuncs())
70 #define WSBM_MUTEX_FREE(_mutex)		\
71     {						\
72 	(_mutex)->func->mutexFree(_mutex);	\
73     }
74 #define WSBM_MUTEX_LOCK(_mutex) \
75     (_mutex)->func->mutexLock(_mutex);
76 #define WSBM_MUTEX_UNLOCK(_mutex) \
77     (_mutex)->func->mutexUnlock(_mutex);
78 
79 #define WSBM_COND_INIT(_mutex)			\
80     wsbmThreadFuncs()->condInit(_mutex, wsbmThreadFuncs())
81 #define WSBM_COND_FREE(_cond)			\
82     {						\
83 	(_cond)->func->condFree(_cond);		\
84     }
85 #define WSBM_COND_WAIT(_cond, _mutex)		\
86     (_cond)->func->condWait(_cond, _mutex);
87 #define WSBM_COND_BROADCAST(_cond)		\
88     (_cond)->func->condBroadcast(_cond);
89 
90 struct _WsbmVNodeFuncs
91 {
92     struct _ValidateNode *(*alloc) (struct _WsbmVNodeFuncs *, int);
93     void (*free) (struct _ValidateNode *);
94     void (*clear) (struct _ValidateNode *);
95 };
96 
97 extern struct _WsbmVNodeFuncs *wsbmCurVNodeFunc;
98 
99 struct _WsbmBufStorage;
100 struct _WsbmKernelBuf;
101 
102 struct _ValidateNode
103 {
104     uint32_t hash;
105     int type_id;
106     struct _WsbmListHead head;
107     struct _WsbmListHead hashHead;
108     int listItem;
109     uint64_t set_flags;
110     uint64_t clr_flags;
111     void *buf;
112     struct _WsbmVNodeFuncs *func;
113 };
114 
115 static inline struct _WsbmVNodeFuncs *
wsbmVNodeFuncs(void)116 wsbmVNodeFuncs(void)
117 {
118     return wsbmCurVNodeFunc;
119 }
120 
121 static inline struct _WsbmThreadFuncs *
wsbmThreadFuncs(void)122 wsbmThreadFuncs(void)
123 {
124     return wsbmCurThreadFunc;
125 }
126 
127 extern struct _WsbmThreadFuncs *wsbmNullThreadFuncs(void);
128 
129 extern struct _WsbmThreadFuncs *wsbmPThreadFuncs(void);
130 
131 #endif
132