patch-2.3.42 linux/arch/sparc/ap1000/timer.c

• Lines: 126
• Date: Wed Dec 31 16:00:00 1969
• Orig file: v2.3.41/linux/arch/sparc/ap1000/timer.c
• Orig date: Tue Aug 4 23:40:54 1998

diff -u --recursive --new-file v2.3.41/linux/arch/sparc/ap1000/timer.c linux/arch/sparc/ap1000/timer.c
@@ -1,125 +0,0 @@
-  /*
-   * Copyright 1996 The Australian National University.
-   * Copyright 1996 Fujitsu Laboratories Limited
-   * 
-   * This software may be distributed under the terms of the Gnu
-   * Public License version 2 or later
-  */
-/* routines to control the AP1000 timer chip */   
-
-#include <linux/time.h>
-#include <linux/sched.h>
-#include <linux/interrupt.h>
-#include <linux/mm.h>
-#include <linux/malloc.h>
-#include <asm/ap1000/apservice.h>
-#include <asm/ap1000/apreg.h>
-#include <asm/irq.h>
-
-#define INIT_TIM1	(781250/HZ)
-#define INIT_TIM0	(781250/(10*HZ))
-
-static unsigned long last_freerun;
-
-unsigned ap_freerun(void)
-{
-	return *((volatile unsigned long *)(MC_FREERUN + 4));
-}
-
-void ap_clear_clock_irq(void)
-{
-	MC_OUT(MC_INTR, AP_CLR_INTR_REQ << MC_INTR_ITIM1_SH);
-	last_freerun = *((unsigned long *)(MC_FREERUN + 4));
-	tnet_check_completion();
-#if 1
-	if ((((unsigned)jiffies) % (HZ/4)) == 0) {
-		msc_timer();
-		ap_xor_led(1);
-		bif_timer();
-		ap_dbg_flush();
-#if 0
-		bif_led_status();
-#endif
-	}
-#endif
-}
-
-
-void ap_gettimeofday(struct timeval *xt)
-{
-	unsigned long d;
-	unsigned v;
-	unsigned long new_freerun;
-
-	/* this is in 80ns units - we only use the low 32 bits 
-	   as 5mins is plenty for this stuff */
-	d = new_freerun = *((unsigned long *)(MC_FREERUN + 4)); 
-
-	if (d < last_freerun) {
-		/* wraparound */
-		d += ((~0) - last_freerun);
-	} else {
-		d -= last_freerun;
-	}
-
-	/* convert to microseconds */
-	v = ((d&0xffffff)*10)/125;
-	
-	/* only want microseconds/HZ */
-	v = v%(1000000/HZ);
-	
-	xt->tv_usec += v;
-
-	last_freerun = new_freerun;
-}
-
-static void profile_interrupt(int irq, void *dev_id, struct pt_regs * regs)
-{
-  if (prof_buffer && current->pid) {
-    extern int _stext;
-    unsigned long ip = instruction_pointer(regs);
-    ip -= (unsigned long) &_stext;
-    ip >>= prof_shift;
-    if (ip < prof_len)
-      prof_buffer[ip]++;
-  }  
-  MC_OUT(MC_INTR,AP_CLR_INTR_REQ << MC_INTR_ITIM0_SH);
-}
-
-void ap_profile_init(void)
-{
-  if (prof_shift) {
-    printk("Initialising profiling with prof_shift=%d\n",(int)prof_shift);
-    MC_OUT(MC_INTR,AP_CLR_INTR_REQ << MC_INTR_ITIM0_SH);
-    MC_OUT(MC_INTR,AP_CLR_INTR_MASK << MC_INTR_ITIM0_SH);
-  }
-}
-
-void ap_init_timers(void)
-{
-	extern void timer_interrupt(int irq, void *dev_id, struct pt_regs * regs);
-	unsigned flags;
-
-	printk("Initialising ap1000 timer\n");
-
-	save_flags(flags); cli();
-	
-	request_irq(APTIM1_IRQ,
-		    timer_interrupt,
-		    (SA_INTERRUPT | SA_STATIC_ALLOC),
-		    "timer", NULL);
-
-	request_irq(APTIM0_IRQ,
-		    profile_interrupt,
-		    (SA_INTERRUPT | SA_STATIC_ALLOC),
-		    "profile", NULL);
-	
-	ap_clear_clock_irq();
-	
-	MC_OUT(MC_ITIMER0,INIT_TIM0);
-	MC_OUT(MC_ITIMER1,INIT_TIM1);
-	MC_OUT(MC_INTR,AP_CLR_INTR_REQ << MC_INTR_ITIM1_SH);
-	MC_OUT(MC_INTR,AP_CLR_INTR_MASK << MC_INTR_ITIM1_SH);
-	MC_OUT(MC_INTR,AP_SET_INTR_MASK << MC_INTR_ITIM0_SH);
-	restore_flags(flags); 
-}