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/****************************************************************************
*
* Copyright (C) 2005 - 2013 by Vivante Corp.
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; either version 2 of the license, or
* (at your option) any later version.
*
* This program is distributed in the hope that 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., 675 Mass Ave, Cambridge, MA 02139, USA.
*
*****************************************************************************/
#include <linux/kernel.h>
#include <linux/file.h>
#include <linux/fs.h>
#include <linux/miscdevice.h>
#include <linux/module.h>
#include <linux/syscalls.h>
#include <linux/uaccess.h>
#include "gc_hal_kernel_sync.h"
#if gcdANDROID_NATIVE_FENCE_SYNC
static struct sync_pt *
viv_sync_pt_dup(
struct sync_pt * sync_pt
)
{
gceSTATUS status;
struct viv_sync_pt *pt;
struct viv_sync_pt *src;
struct viv_sync_timeline *obj;
src = (struct viv_sync_pt *) sync_pt;
obj = (struct viv_sync_timeline *) sync_pt->parent;
/* Create the new sync_pt. */
pt = (struct viv_sync_pt *)
sync_pt_create(&obj->obj, sizeof(struct viv_sync_pt));
pt->stamp = src->stamp;
pt->sync = src->sync;
/* Reference sync point. */
status = gckOS_ReferenceSyncPoint(obj->os, pt->sync);
if (gcmIS_ERROR(status))
{
sync_pt_free((struct sync_pt *)pt);
return NULL;
}
return (struct sync_pt *)pt;
}
static int
viv_sync_pt_has_signaled(
struct sync_pt * sync_pt
)
{
gceSTATUS status;
gctBOOL state;
struct viv_sync_pt * pt;
struct viv_sync_timeline * obj;
pt = (struct viv_sync_pt *)sync_pt;
obj = (struct viv_sync_timeline *)sync_pt->parent;
status = gckOS_QuerySyncPoint(obj->os, pt->sync, &state);
if (gcmIS_ERROR(status))
{
/* Error. */
return -1;
}
return state;
}
static int
viv_sync_pt_compare(
struct sync_pt * a,
struct sync_pt * b
)
{
int ret;
struct viv_sync_pt * pt1 = (struct viv_sync_pt *) a;
struct viv_sync_pt * pt2 = (struct viv_sync_pt *) b;
ret = (pt1->stamp < pt2->stamp) ? -1
: (pt1->stamp == pt2->stamp) ? 0
: 1;
return ret;
}
static void
viv_sync_pt_free(
struct sync_pt * sync_pt
)
{
struct viv_sync_pt * pt;
struct viv_sync_timeline * obj;
pt = (struct viv_sync_pt *) sync_pt;
obj = (struct viv_sync_timeline *) sync_pt->parent;
gckOS_DestroySyncPoint(obj->os, pt->sync);
}
static struct sync_timeline_ops viv_timeline_ops =
{
.driver_name = "viv_sync",
.dup = viv_sync_pt_dup,
.has_signaled = viv_sync_pt_has_signaled,
.compare = viv_sync_pt_compare,
.free_pt = viv_sync_pt_free,
};
struct viv_sync_timeline *
viv_sync_timeline_create(
const char * name,
gckOS os
)
{
struct viv_sync_timeline * obj;
obj = (struct viv_sync_timeline *)
sync_timeline_create(&viv_timeline_ops, sizeof(struct viv_sync_timeline), name);
obj->os = os;
obj->stamp = 0;
return obj;
}
struct sync_pt *
viv_sync_pt_create(
struct viv_sync_timeline * obj,
gctSYNC_POINT SyncPoint
)
{
gceSTATUS status;
struct viv_sync_pt * pt;
pt = (struct viv_sync_pt *)
sync_pt_create(&obj->obj, sizeof(struct viv_sync_pt));
pt->stamp = obj->stamp++;
pt->sync = SyncPoint;
/* Dup signal. */
status = gckOS_ReferenceSyncPoint(obj->os, SyncPoint);
if (gcmIS_ERROR(status))
{
sync_pt_free((struct sync_pt *)pt);
return NULL;
}
return (struct sync_pt *) pt;
}
#endif
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