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/*
*
* 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) 2000 Silicon Graphics, Inc.
* Copyright (C) 2000 by Jack Steiner (steiner@sgi.com)
*/
#ifndef _ASM_KSYS_CLKSUPPORT_H
#define _ASM_KSYS_CLKSUPPORT_H
/* #include <sys/mips_addrspace.h> */
#if SN
#include <asm/sn/agent.h>
#include <asm/sn/intr_public.h>
typedef hubreg_t clkreg_t;
extern nasid_t master_nasid;
#define GET_LOCAL_RTC (clkreg_t)LOCAL_HUB_L(PI_RT_COUNT)
#define DISABLE_TMO_INTR() if (cpuid_to_localslice(cpuid())) \
REMOTE_HUB_PI_S(get_nasid(),\
cputosubnode(cpuid()),\
PI_RT_COMPARE_B, 0); \
else \
REMOTE_HUB_PI_S(get_nasid(),\
cputosubnode(cpuid()),\
PI_RT_COMPARE_A, 0);
/* This is a hack; we really need to figure these values out dynamically */
/*
* Since 800 ns works very well with various HUB frequencies, such as
* 360, 380, 390 and 400 MHZ, we use 800 ns rtc cycle time.
*/
#define NSEC_PER_CYCLE 800
#define CYCLE_PER_SEC (NSEC_PER_SEC/NSEC_PER_CYCLE)
/*
* Number of cycles per profiling intr
*/
#define CLK_FCLOCK_FAST_FREQ 1250
#define CLK_FCLOCK_SLOW_FREQ 0
/* The is the address that the user will use to mmap the cycle counter */
#define CLK_CYCLE_ADDRESS_FOR_USER LOCAL_HUB_ADDR(PI_RT_COUNT)
#elif IP30
#include <sys/cpu.h>
typedef heartreg_t clkreg_t;
#define NSEC_PER_CYCLE 80
#define CYCLE_PER_SEC (NSEC_PER_SEC/NSEC_PER_CYCLE)
#define GET_LOCAL_RTC *((volatile clkreg_t *)PHYS_TO_COMPATK1(HEART_COUNT))
#define DISABLE_TMO_INTR()
#define CLK_CYCLE_ADDRESS_FOR_USER PHYS_TO_K1(HEART_COUNT)
#define CLK_FCLOCK_SLOW_FREQ (CYCLE_PER_SEC / HZ)
#endif
/* Prototypes */
extern void init_timebase(void);
extern void fastick_maint(struct eframe_s *);
extern int audioclock;
extern int prfclk_enabled_cnt;
#endif /* _ASM_KSYS_CLKSUPPORT_H */
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