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Viewing changes to gcell/ibm/sync/spu_source/sync_irq.h

  • Committer: Bazaar Package Importer
  • Author(s): Kamal Mostafa
  • Date: 2010-03-13 07:46:01 UTC
  • mfrom: (2.1.2 sid)
  • Revision ID: james.westby@ubuntu.com-20100313074601-zjsa893a87bozyh7
Tags: 3.2.2.dfsg-1ubuntu1
https://launchpad.net/bugs/260406
* Fix build for Ubuntu lucid (LP: #260406)
  - add binary package dep for libusrp0, libusrp2-0: adduser
  - debian/rules clean: remove pre-built Qt moc files

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gcell/ibm/sync/spu_source/sync_irq.h
 
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/* --------------------------------------------------------------  */
 
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/* (C)Copyright 2001,2007,                                         */
 
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/* International Business Machines Corporation,                    */
 
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/* Sony Computer Entertainment, Incorporated,                      */
 
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/* Toshiba Corporation,                                            */
 
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/*                                                                 */
 
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/* All Rights Reserved.                                            */
 
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/*                                                                 */
 
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/* Redistribution and use in source and binary forms, with or      */
 
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/* without modification, are permitted provided that the           */
 
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/* following conditions are met:                                   */
 
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/*                                                                 */
 
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/* - Redistributions of source code must retain the above copyright*/
 
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/*   notice, this list of conditions and the following disclaimer. */
 
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/*                                                                 */
 
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/* - Redistributions in binary form must reproduce the above       */
 
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/*   copyright notice, this list of conditions and the following   */
 
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/*   disclaimer in the documentation and/or other materials        */
 
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/*   provided with the distribution.                               */
 
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/*                                                                 */
 
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/* - Neither the name of IBM Corporation nor the names of its      */
 
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/*   contributors may be used to endorse or promote products       */
 
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/*   derived from this software without specific prior written     */
 
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/*   permission.                                                   */
 
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/*                                                                 */
 
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/* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND          */
 
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/* CONTRIBUTORS "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES,     */
 
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/* INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF        */
 
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/* MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE        */
 
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/* DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR            */
 
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/* CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,    */
 
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/* SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT    */
 
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/* NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;    */
 
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/* LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)        */
 
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/* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN       */
 
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/* CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR    */
 
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/* OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE,  */
 
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/* EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.              */
 
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/* --------------------------------------------------------------  */
 
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/* PROLOG END TAG zYx                                              */
 
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/*
 
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 * irq.h - SPU interrupt management facilities.
 
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 * 
 
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 * These utilities help an "interrupt aware" library to manage
 
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 * state of SPU interrupts.  
 
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 */
 
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#ifndef __SPU_IRQ_H__
 
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#define __SPU_IRQ_H__
 
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#include <spu_intrinsics.h>
 
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#include "sync_utils.h"
 
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static inline u32 irq_mask(u32 newmask)
 
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{
 
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    u32 old, tmp = 0;
 
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    /* irq_mask
 
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     *    Set the interrupt mask to the newmask value,
 
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     *    and return its previous setting.  Will
 
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     *    detect and discard potential phantom
 
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     *    events.
 
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     */
 
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    old = spu_readch(SPU_RdEventMask);
 
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    spu_writech(SPU_WrEventMask, tmp);
 
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    if (spu_readchcnt(SPU_RdEventStat)) {
 
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        tmp = spu_readch(SPU_RdEventStat);
 
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        spu_writech(SPU_WrEventAck, tmp);
 
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    }
 
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    spu_writech(SPU_WrEventMask, newmask);
 
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    return old;
 
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}
 
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#endif /* __SPU_IRQ_H__ */