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/*
 * Copyright © 2010 NVIDIA Corporation
 *
 * 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 (including the next
 * paragraph) 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.
 */

#ifdef HAVE_DIX_CONFIG_H
#include <dix-config.h>
#endif

#ifndef _MISYNCSTR_H_
#define _MISYNCSTR_H_

#include "dix.h"
#include "scrnintstr.h"
#include <X11/extensions/syncconst.h>

#define CARD64 XSyncValue       /* XXX temporary! need real 64 bit values for Alpha */

/* Sync object types */
#define SYNC_COUNTER		0
#define SYNC_FENCE		1

typedef struct _SyncObject {
    ClientPtr client;           /* Owning client. 0 for system counters */
    struct _SyncTriggerList *pTriglist; /* list of triggers */
    XID id;                     /* resource ID */
    unsigned char type;         /* SYNC_* */
    Bool beingDestroyed;        /* in process of going away */
} SyncObject;

typedef struct _SyncCounter {
    SyncObject sync;            /* Common sync object data */
    CARD64 value;               /* counter value */
    struct _SysCounterInfo *pSysCounterInfo;    /* NULL if not a system counter */
} SyncCounter;

struct _SyncFence {
    SyncObject sync;            /* Common sync object data */
    ScreenPtr pScreen;          /* Screen of this fence object */
    SyncFenceFuncsRec funcs;    /* Funcs for performing ops on fence */
    Bool triggered;             /* fence state */
    PrivateRec *devPrivates;    /* driver-specific per-fence data */
};

struct _SyncTrigger {
    SyncObject *pSync;
    CARD64 wait_value;          /* wait value */
    unsigned int value_type;    /* Absolute or Relative */
    unsigned int test_type;     /* transition or Comparision type */
    CARD64 test_value;          /* trigger event threshold value */
    Bool (*CheckTrigger) (struct _SyncTrigger * /*pTrigger */ ,
                          CARD64        /*newval */
        );
    void (*TriggerFired) (struct _SyncTrigger * /*pTrigger */
        );
    void (*CounterDestroyed) (struct _SyncTrigger *     /*pTrigger */
        );
};

typedef struct _SyncTriggerList {
    SyncTrigger *pTrigger;
    struct _SyncTriggerList *next;
} SyncTriggerList;

extern DevPrivateKeyRec miSyncScreenPrivateKey;

#define SYNC_SCREEN_PRIV(pScreen) 				\
    (SyncScreenPrivPtr) dixLookupPrivate(&pScreen->devPrivates,	\
					 &miSyncScreenPrivateKey)

typedef struct _syncScreenPriv {
    /* Wrappable sync-specific screen functions */
    SyncScreenFuncsRec funcs;

    /* Wrapped screen functions */
    CloseScreenProcPtr CloseScreen;
} SyncScreenPrivRec, *SyncScreenPrivPtr;

#endif                          /* _MISYNCSTR_H_ */