1 /* -------------------------------------------------------------- */
2 /* (C)Copyright 2001,2007, */
3 /* International Business Machines Corporation, */
4 /* Sony Computer Entertainment, Incorporated, */
5 /* Toshiba Corporation, */
7 /* All Rights Reserved. */
9 /* Redistribution and use in source and binary forms, with or */
10 /* without modification, are permitted provided that the */
11 /* following conditions are met: */
13 /* - Redistributions of source code must retain the above copyright*/
14 /* notice, this list of conditions and the following disclaimer. */
16 /* - Redistributions in binary form must reproduce the above */
17 /* copyright notice, this list of conditions and the following */
18 /* disclaimer in the documentation and/or other materials */
19 /* provided with the distribution. */
21 /* - Neither the name of IBM Corporation nor the names of its */
22 /* contributors may be used to endorse or promote products */
23 /* derived from this software without specific prior written */
26 /* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND */
27 /* CONTRIBUTORS "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, */
28 /* INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF */
29 /* MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE */
30 /* DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR */
31 /* CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, */
32 /* SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT */
33 /* NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; */
34 /* LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) */
35 /* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN */
36 /* CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR */
37 /* OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, */
38 /* EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. */
39 /* -------------------------------------------------------------- */
40 /* PROLOG END TAG zYx */
41 #ifndef _SPU_WAIT_FOR_COMPLETION_H_
42 #define _SPU_WAIT_FOR_COMPLETION_H_
44 #include "sync_utils.h"
45 #include <spu_mfcio.h>
47 #include "completion.h"
49 /* _wait_for_completion
50 * Internal routine to wait for completion to
51 * become true (!0). When completion is false,
52 * uses lock line reservation lost event to
53 * sleep until the variable has been changed.
55 static __inline void _wait_for_completion(completion_ea_t completion)
57 DECL_COMPLETION_VARS();
62 ea64.ull = ALIGN128_EA(completion);
63 offset = OFFSET128_EA_U32(completion);
65 MFC_DMA(buf, ea64, size, tagid, MFC_GETLLAR_CMD);
66 spu_readch(MFC_RdAtomicStat);
67 /* if the completion variable has been set elsewhere
68 * (a signal or broadcast function has been called
69 * then we get out of the loop, and reset the variable */
70 if (likely(buf[offset] != 0)) {
71 /* decrement the variable */
73 MFC_DMA(buf, ea64, size, tagid, MFC_PUTLLC_CMD);
74 spu_readch(MFC_RdAtomicStat);
77 } while (status != 0);
82 #endif /* _SPU_WAIT_FOR_COMPLETION_H_ */