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/*
* 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) 2001-2003 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 */
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