mmtimer_private.h
上传用户:jlfgdled
上传日期:2013-04-10
资源大小:33168k
文件大小:1k
源码类别:
Linux/Unix编程
开发平台:
Unix_Linux
- /*
- * Intel Multimedia Timer device interface
- *
- * This file is subject to the terms and conditions of the GNU General Public
- * License. See the file "COPYING" in the main directory of this archive
- * for more details.
- *
- * Copyright (c) 2001-2002 Silicon Graphics, Inc. All rights reserved.
- *
- * Helper file for the SN implementation of mmtimers
- *
- * 11/01/01 - jbarnes - initial revision
- */
- #ifndef _SN_MMTIMER_PRIVATE_H
- #define RTC_BITS 55 /* 55 bits for this implementation */
- #define NUM_COMPARATORS 2 /* two comparison registers in SN1 */
- /*
- * Check for an interrupt and clear the pending bit if
- * one is waiting.
- */
- #define MMTIMER_INT_PENDING(x) (x ? *(RTC_INT_PENDING_B_ADDR) : *(RTC_INT_PENDING_A_ADDR))
- /*
- * Set interrupts on RTC 'x' to 'v' (true or false)
- */
- #define MMTIMER_SET_INT(x,v) (x ? (*(RTC_INT_ENABLED_B_ADDR) = (unsigned long)(v)) : (*(RTC_INT_ENABLED_A_ADDR) = (unsigned long)(v)))
- #define MMTIMER_ENABLE_INT(x) MMTIMER_SET_INT(x, 1)
- #define MMTIMER_DISABLE_INT(x) MMTIMER_SET_INT(x, 0)
- typedef struct mmtimer {
- spinlock_t timer_lock;
- unsigned long periodic;
- int signo;
- volatile unsigned long *compare;
- struct task_struct *process;
- } mmtimer_t;
- #endif /* _SN_LINUX_MMTIMER_PRIVATE_H */