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      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 Hellstrm <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 *
    116 wsbmVNodeFuncs(void)
    117 {
    118     return wsbmCurVNodeFunc;
    119 }
    120 
    121 static inline struct _WsbmThreadFuncs *
    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