diff options
Diffstat (limited to 'gcell/ibm/sync/spu_source/wait_for_completion.h')
| -rw-r--r-- | gcell/ibm/sync/spu_source/wait_for_completion.h | 82 |
1 files changed, 82 insertions, 0 deletions
diff --git a/gcell/ibm/sync/spu_source/wait_for_completion.h b/gcell/ibm/sync/spu_source/wait_for_completion.h new file mode 100644 index 000000000..ea7bdbe6d --- /dev/null +++ b/gcell/ibm/sync/spu_source/wait_for_completion.h @@ -0,0 +1,82 @@ +/* -------------------------------------------------------------- */ +/* (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_WAIT_FOR_COMPLETION_H_ +#define _SPU_WAIT_FOR_COMPLETION_H_ + +#include "sync_utils.h" +#include <spu_mfcio.h> +#include "sync_irq.h" +#include "completion.h" + +/* _wait_for_completion + * Internal routine to wait for completion to + * become true (!0). When completion is false, + * uses lock line reservation lost event to + * sleep until the variable has been changed. + */ +static __inline void _wait_for_completion(completion_ea_t completion) +{ + DECL_COMPLETION_VARS(); + s32 status; + + status = 1; + + ea64.ull = ALIGN128_EA(completion); + offset = OFFSET128_EA_U32(completion); + do { + MFC_DMA(buf, ea64, size, tagid, MFC_GETLLAR_CMD); + spu_readch(MFC_RdAtomicStat); + /* if the completion variable has been set elsewhere + * (a signal or broadcast function has been called + * then we get out of the loop, and reset the variable */ + if (likely(buf[offset] != 0)) { + /* decrement the variable */ + buf[offset]--; + MFC_DMA(buf, ea64, size, tagid, MFC_PUTLLC_CMD); + spu_readch(MFC_RdAtomicStat); + status = 0; + } + } while (status != 0); +} + + + +#endif /* _SPU_WAIT_FOR_COMPLETION_H_ */ |