diff options
Diffstat (limited to 'gcell/src/ibm/sync/spu_source/sync_irq.h')
| -rw-r--r-- | gcell/src/ibm/sync/spu_source/sync_irq.h | 76 |
1 files changed, 76 insertions, 0 deletions
diff --git a/gcell/src/ibm/sync/spu_source/sync_irq.h b/gcell/src/ibm/sync/spu_source/sync_irq.h new file mode 100644 index 0000000000..feae65e508 --- /dev/null +++ b/gcell/src/ibm/sync/spu_source/sync_irq.h @@ -0,0 +1,76 @@ +/* -------------------------------------------------------------- */ +/* (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 */ +/* + * irq.h - SPU interrupt management facilities. + * + * These utilities help an "interrupt aware" library to manage + * state of SPU interrupts. + */ + +#ifndef __SPU_IRQ_H__ +#define __SPU_IRQ_H__ + +#include <spu_intrinsics.h> +#include "sync_utils.h" + +static inline u32 irq_mask(u32 newmask) +{ + u32 old, tmp = 0; + + /* irq_mask + * Set the interrupt mask to the newmask value, + * and return its previous setting. Will + * detect and discard potential phantom + * events. + */ + + old = spu_readch(SPU_RdEventMask); + spu_writech(SPU_WrEventMask, tmp); + if (spu_readchcnt(SPU_RdEventStat)) { + tmp = spu_readch(SPU_RdEventStat); + spu_writech(SPU_WrEventAck, tmp); + } + spu_writech(SPU_WrEventMask, newmask); + + return old; +} + +#endif /* __SPU_IRQ_H__ */ |