1 files changed, 0 insertions, 290 deletions
diff --git a/arch/x86/kernel/time_64.c b/arch/x86/kernel/time_64.c
deleted file mode 100644
index c821edc3221..00000000000
--- a/arch/x86/kernel/time_64.c
+++ /dev/null
@@ -1,290 +0,0 @@
-/*
- *  "High Precision Event Timer" based timekeeping.
- *
- *  Copyright (c) 1991,1992,1995  Linus Torvalds
- *  Copyright (c) 1994  Alan Modra
- *  Copyright (c) 1995  Markus Kuhn
- *  Copyright (c) 1996  Ingo Molnar
- *  Copyright (c) 1998  Andrea Arcangeli
- *  Copyright (c) 2002,2006  Vojtech Pavlik
- *  Copyright (c) 2003  Andi Kleen
- *  RTC support code taken from arch/i386/kernel/timers/time_hpet.c
- */
-
-#include <linux/kernel.h>
-#include <linux/sched.h>
-#include <linux/interrupt.h>
-#include <linux/init.h>
-#include <linux/mc146818rtc.h>
-#include <linux/time.h>
-#include <linux/ioport.h>
-#include <linux/module.h>
-#include <linux/device.h>
-#include <linux/sysdev.h>
-#include <linux/bcd.h>
-#include <linux/notifier.h>
-#include <linux/cpu.h>
-#include <linux/kallsyms.h>
-#include <linux/acpi.h>
-#include <linux/clockchips.h>
-
-#ifdef CONFIG_ACPI
-#include <acpi/achware.h>	/* for PM timer frequency */
-#include <acpi/acpi_bus.h>
-#endif
-#include <asm/i8253.h>
-#include <asm/pgtable.h>
-#include <asm/vsyscall.h>
-#include <asm/timex.h>
-#include <asm/proto.h>
-#include <asm/hpet.h>
-#include <asm/sections.h>
-#include <linux/hpet.h>
-#include <asm/apic.h>
-#include <asm/hpet.h>
-#include <asm/mpspec.h>
-#include <asm/nmi.h>
-#include <asm/vgtod.h>
-
-DEFINE_SPINLOCK(rtc_lock);
-EXPORT_SYMBOL(rtc_lock);
-
-volatile unsigned long __jiffies __section_jiffies = INITIAL_JIFFIES;
-
-unsigned long profile_pc(struct pt_regs *regs)
-{
-	unsigned long pc = instruction_pointer(regs);
-
-	/* Assume the lock function has either no stack frame or a copy
-	   of eflags from PUSHF
-	   Eflags always has bits 22 and up cleared unlike kernel addresses. */
-	if (!user_mode(regs) && in_lock_functions(pc)) {
-		unsigned long *sp = (unsigned long *)regs->rsp;
-		if (sp[0] >> 22)
-			return sp[0];
-		if (sp[1] >> 22)
-			return sp[1];
-	}
-	return pc;
-}
-EXPORT_SYMBOL(profile_pc);
-
-/*
- * In order to set the CMOS clock precisely, set_rtc_mmss has to be called 500
- * ms after the second nowtime has started, because when nowtime is written
- * into the registers of the CMOS clock, it will jump to the next second
- * precisely 500 ms later. Check the Motorola MC146818A or Dallas DS12887 data
- * sheet for details.
- */
-
-static int set_rtc_mmss(unsigned long nowtime)
-{
-	int retval = 0;
-	int real_seconds, real_minutes, cmos_minutes;
-	unsigned char control, freq_select;
-
-/*
- * IRQs are disabled when we're called from the timer interrupt,
- * no need for spin_lock_irqsave()
- */
-
-	spin_lock(&rtc_lock);
-
-/*
- * Tell the clock it's being set and stop it.
- */
-
-	control = CMOS_READ(RTC_CONTROL);
-	CMOS_WRITE(control | RTC_SET, RTC_CONTROL);
-
-	freq_select = CMOS_READ(RTC_FREQ_SELECT);
-	CMOS_WRITE(freq_select | RTC_DIV_RESET2, RTC_FREQ_SELECT);
-
-	cmos_minutes = CMOS_READ(RTC_MINUTES);
-		BCD_TO_BIN(cmos_minutes);
-
-/*
- * since we're only adjusting minutes and seconds, don't interfere with hour
- * overflow. This avoids messing with unknown time zones but requires your RTC
- * not to be off by more than 15 minutes. Since we're calling it only when
- * our clock is externally synchronized using NTP, this shouldn't be a problem.
- */
-
-	real_seconds = nowtime % 60;
-	real_minutes = nowtime / 60;
-	if (((abs(real_minutes - cmos_minutes) + 15) / 30) & 1)
-		real_minutes += 30;		/* correct for half hour time zone */
-	real_minutes %= 60;
-
-	if (abs(real_minutes - cmos_minutes) >= 30) {
-		printk(KERN_WARNING "time.c: can't update CMOS clock "
-		       "from %d to %d\n", cmos_minutes, real_minutes);
-		retval = -1;
-	} else {
-		BIN_TO_BCD(real_seconds);
-		BIN_TO_BCD(real_minutes);
-		CMOS_WRITE(real_seconds, RTC_SECONDS);
-		CMOS_WRITE(real_minutes, RTC_MINUTES);
-	}
-
-/*
- * The following flags have to be released exactly in this order, otherwise the
- * DS12887 (popular MC146818A clone with integrated battery and quartz) will
- * not reset the oscillator and will not update precisely 500 ms later. You
- * won't find this mentioned in the Dallas Semiconductor data sheets, but who
- * believes data sheets anyway ... -- Markus Kuhn
- */
-
-	CMOS_WRITE(control, RTC_CONTROL);
-	CMOS_WRITE(freq_select, RTC_FREQ_SELECT);
-
-	spin_unlock(&rtc_lock);
-
-	return retval;
-}
-
-int update_persistent_clock(struct timespec now)
-{
-	return set_rtc_mmss(now.tv_sec);
-}
-
-static irqreturn_t timer_event_interrupt(int irq, void *dev_id)
-{
-	add_pda(irq0_irqs, 1);
-
-	global_clock_event->event_handler(global_clock_event);
-
-	return IRQ_HANDLED;
-}
-
-unsigned long read_persistent_clock(void)
-{
-	unsigned int year, mon, day, hour, min, sec;
-	unsigned long flags;
-	unsigned century = 0;
-
-	spin_lock_irqsave(&rtc_lock, flags);
-
-	do {
-		sec = CMOS_READ(RTC_SECONDS);
-		min = CMOS_READ(RTC_MINUTES);
-		hour = CMOS_READ(RTC_HOURS);
-		day = CMOS_READ(RTC_DAY_OF_MONTH);
-		mon = CMOS_READ(RTC_MONTH);
-		year = CMOS_READ(RTC_YEAR);
-#ifdef CONFIG_ACPI
-		if (acpi_gbl_FADT.header.revision >= FADT2_REVISION_ID &&
-					acpi_gbl_FADT.century)
-			century = CMOS_READ(acpi_gbl_FADT.century);
-#endif
-	} while (sec != CMOS_READ(RTC_SECONDS));
-
-	spin_unlock_irqrestore(&rtc_lock, flags);
-
-	/*
-	 * We know that x86-64 always uses BCD format, no need to check the
-	 * config register.
-	 */
-
-	BCD_TO_BIN(sec);
-	BCD_TO_BIN(min);
-	BCD_TO_BIN(hour);
-	BCD_TO_BIN(day);
-	BCD_TO_BIN(mon);
-	BCD_TO_BIN(year);
-
-	if (century) {
-		BCD_TO_BIN(century);
-		year += century * 100;
-		printk(KERN_INFO "Extended CMOS year: %d\n", century * 100);
-	} else {
-		/*
-		 * x86-64 systems only exists since 2002.
-		 * This will work up to Dec 31, 2100
-		 */
-		year += 2000;
-	}
-
-	return mktime(year, mon, day, hour, min, sec);
-}
-
-/* calibrate_cpu is used on systems with fixed rate TSCs to determine
- * processor frequency */
-#define TICK_COUNT 100000000
-static unsigned int __init tsc_calibrate_cpu_khz(void)
-{
-	int tsc_start, tsc_now;
-	int i, no_ctr_free;
-	unsigned long evntsel3 = 0, pmc3 = 0, pmc_now = 0;
-	unsigned long flags;
-
-	for (i = 0; i < 4; i++)
-		if (avail_to_resrv_perfctr_nmi_bit(i))
-			break;
-	no_ctr_free = (i == 4);
-	if (no_ctr_free) {
-		i = 3;
-		rdmsrl(MSR_K7_EVNTSEL3, evntsel3);
-		wrmsrl(MSR_K7_EVNTSEL3, 0);
-		rdmsrl(MSR_K7_PERFCTR3, pmc3);
-	} else {
-		reserve_perfctr_nmi(MSR_K7_PERFCTR0 + i);
-		reserve_evntsel_nmi(MSR_K7_EVNTSEL0 + i);
-	}
-	local_irq_save(flags);
-	/* start meauring cycles, incrementing from 0 */
-	wrmsrl(MSR_K7_PERFCTR0 + i, 0);
-	wrmsrl(MSR_K7_EVNTSEL0 + i, 1 << 22 | 3 << 16 | 0x76);
-	rdtscl(tsc_start);
-	do {
-		rdmsrl(MSR_K7_PERFCTR0 + i, pmc_now);
-		tsc_now = get_cycles_sync();
-	} while ((tsc_now - tsc_start) < TICK_COUNT);
-
-	local_irq_restore(flags);
-	if (no_ctr_free) {
-		wrmsrl(MSR_K7_EVNTSEL3, 0);
-		wrmsrl(MSR_K7_PERFCTR3, pmc3);
-		wrmsrl(MSR_K7_EVNTSEL3, evntsel3);
-	} else {
-		release_perfctr_nmi(MSR_K7_PERFCTR0 + i);
-		release_evntsel_nmi(MSR_K7_EVNTSEL0 + i);
-	}
-
-	return pmc_now * tsc_khz / (tsc_now - tsc_start);
-}
-
-static struct irqaction irq0 = {
-	.handler	= timer_event_interrupt,
-	.flags		= IRQF_DISABLED | IRQF_IRQPOLL | IRQF_NOBALANCING,
-	.mask		= CPU_MASK_NONE,
-	.name		= "timer"
-};
-
-void __init time_init(void)
-{
-	if (!hpet_enable())
-		setup_pit_timer();
-
-	setup_irq(0, &irq0);
-
-	tsc_calibrate();
-
-	cpu_khz = tsc_khz;
-	if (cpu_has(&boot_cpu_data, X86_FEATURE_CONSTANT_TSC) &&
-		boot_cpu_data.x86_vendor == X86_VENDOR_AMD &&
-		boot_cpu_data.x86 == 16)
-		cpu_khz = tsc_calibrate_cpu_khz();
-
-	if (unsynchronized_tsc())
-		mark_tsc_unstable("TSCs unsynchronized");
-
-	if (cpu_has(&boot_cpu_data, X86_FEATURE_RDTSCP))
-		vgetcpu_mode = VGETCPU_RDTSCP;
-	else
-		vgetcpu_mode = VGETCPU_LSL;
-
-	printk(KERN_INFO "time.c: Detected %d.%03d MHz processor.\n",
-		cpu_khz / 1000, cpu_khz % 1000);
-	init_tsc_clocksource();
-}