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/*
* Copyright 1996 The Australian National University.
* Copyright 1996 Fujitsu Laboratories Limited
*
* This software may be distributed under the terms of the Gnu
* Public License version 2 or later
*/
/* sync functions using the Tnet */
#include <asm/ap1000/apreg.h>
#include <linux/mm.h>
#include <linux/sched.h>
#include <linux/threads.h>
extern int cap_cid0;
extern unsigned _ncel, _ncelx, _ncely, _cid;
static volatile int sync_flags[MPP_NUM_TASKS];
int ap_sync(int numcells, int *phys_map)
{
int basecell;
int i,err;
int tsk = current->taskid;
if (numcells < 2) return 0;
if (!MPP_IS_PAR_TASK(tsk)) {
printk("nonparallel task %d called ap_sync\n",tsk);
return 0;
}
tsk -= MPP_TASK_BASE;
basecell = phys_map[0];
if (cap_cid0 == basecell) {
if ((err=wait_on_int(&sync_flags[tsk],numcells-1,5)))
return err;
sync_flags[tsk] = 0;
if (numcells == _ncel) {
ap_bput(0,0,0,&sync_flags[tsk],0);
} else {
for (i=1;i<numcells;i++)
ap_put(phys_map[i],0,0,0,&sync_flags[tsk],0);
}
return 0;
}
ap_put(basecell,0,0,0,&sync_flags[tsk],0);
if ((err=wait_on_int(&sync_flags[tsk],1,5)))
return err;
sync_flags[tsk] = 0;
return 0;
}
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