diff options
Diffstat (limited to 'gcell/ibm/sync/spu_source/cond_signal.h')
| -rw-r--r-- | gcell/ibm/sync/spu_source/cond_signal.h | 88 |
1 files changed, 88 insertions, 0 deletions
diff --git a/gcell/ibm/sync/spu_source/cond_signal.h b/gcell/ibm/sync/spu_source/cond_signal.h new file mode 100644 index 000000000..a035d2875 --- /dev/null +++ b/gcell/ibm/sync/spu_source/cond_signal.h @@ -0,0 +1,88 @@ +/* -------------------------------------------------------------- */ +/* (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_SIGNAL_H_ +#define _SPU_COND_SIGNAL_H_ +#include <stdio.h> +#include "sync_utils.h" +#include "cond.h" +#include "atomic.h" +#include <spu_mfcio.h> + +/* + * _cond_signal: signalling any of the waiting threads to wake up. + */ +static __inline void _cond_signal(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; + int status; + + ea64.ull = ALIGN128_EA(cond); + offset = OFFSET128_EA_U16(cond); + + do { + MFC_DMA(buf, ea64, size, tagid, MFC_GETLLAR_CMD); + (void)spu_readch(MFC_RdAtomicStat); + + /* Check for waiting threads. + */ + if (buf[offset] != buf[offset+1]) { + /* Increment the signaled count to release the next waiting + * thread. + */ + buf[offset]++; + + MFC_DMA(buf, ea64, size, tagid, MFC_PUTLLC_CMD); + status = spu_readch(MFC_RdAtomicStat); + } else { + /* Nobody is waiting, do nothing. + */ + status = 0; + } + } while (status); +} + + +#endif /* _SPU_COND_SIGNAL_H_ */ |