summaryrefslogtreecommitdiff
path: root/gcell/ibm/sync/spu_source/cond_broadcast.h
blob: 15a1da3301a096cdc03cb388da61c5d2faa025d9 (plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
/* --------------------------------------------------------------  */
/* (C)Copyright 2001,2007,                                         */
/* International Business Machines Corporation,                    */
/* Sony Computer Entertainment, Incorporated,                      */
/* Toshiba Corporation,                                            */
/*                                                                 */
/* All Rights Reserved.                                            */
/*                                                                 */
/* Redistribution and use in source and binary forms, with or      */
/* without modification, are permitted provided that the           */
/* following conditions are met:                                   */
/*                                                                 */
/* - Redistributions of source code must retain the above copyright*/
/*   notice, this list of conditions and the following disclaimer. */
/*                                                                 */
/* - Redistributions in binary form must reproduce the above       */
/*   copyright notice, this list of conditions and the following   */
/*   disclaimer in the documentation and/or other materials        */
/*   provided with the distribution.                               */
/*                                                                 */
/* - Neither the name of IBM Corporation nor the names of its      */
/*   contributors may be used to endorse or promote products       */
/*   derived from this software without specific prior written     */
/*   permission.                                                   */
/*                                                                 */
/* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND          */
/* CONTRIBUTORS "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES,     */
/* INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF        */
/* MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE        */
/* DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR            */
/* CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,    */
/* SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT    */
/* NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;    */
/* LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)        */
/* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN       */
/* CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR    */
/* OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE,  */
/* EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.              */
/* --------------------------------------------------------------  */
/* PROLOG END TAG zYx                                              */
#ifndef _SPU_COND_BROADCAST_H_
#define _SPU_COND_BROADCAST_H_

#include "sync_utils.h"
#include "cond.h"
#include <spu_mfcio.h>

/**
 * cond_broadcast - indicate that a condition is true.
 * @cond: handle to effective address of condition variable.
 */
static __inline void _cond_broadcast(cond_ea_t cond)
{
    char _tmp[256];                                     
    char *tmp = (char *) ALIGN(_tmp, 128);              
    volatile unsigned short *buf = (volatile unsigned short *) &tmp[0];       
    unsigned int size = 128, tagid = 0;                          
    u32 offset;                                         
    addr64 ea64;          

    ea64.ull = ALIGN128_EA(cond);
    offset = OFFSET128_EA_U16(cond);
    MFC_DMA(buf, ea64, size, tagid, MFC_GETLLAR_CMD);
    spu_readch(MFC_RdAtomicStat);

    /* set the condition variable to the count. So that
     * all the threads  */
    buf[offset] = buf[offset + 1];
    MFC_DMA(buf, ea64, size, tagid, MFC_PUTLLUC_CMD);
    spu_readch(MFC_RdAtomicStat);
}

#endif /* _SPU_COND_BROADCAST_H_ */