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Commit 40ffa937 authored by Thomas Gleixner's avatar Thomas Gleixner
Browse files

x86: Remove stale pmtimer_64.c 



This file is unused since the apic unification in 2.6.29, but nobody
noticed.

Signed-off-by: default avatarThomas Gleixner <tglx@linutronix.de>
parent 234bb549

arch/x86/kernel/Makefile

+0 −1
Original line number Diff line number Diff line
@@ -120,7 +120,6 @@ obj-$(CONFIG_SWIOTLB) += pci-swiotlb.o 
# 64 bit specific files

ifeq ($(CONFIG_X86_64),y)

	obj-$(CONFIG_X86_UV)		+= tlb_uv.o bios_uv.o uv_irq.o uv_sysfs.o uv_time.o

	obj-$(CONFIG_X86_PM_TIMER)	+= pmtimer_64.o

	obj-$(CONFIG_AUDIT)		+= audit_64.o



	obj-$(CONFIG_GART_IOMMU)	+= pci-gart_64.o aperture_64.o

arch/x86/kernel/pmtimer_64.c

deleted100644 → 0
+0 −69
Original line number Diff line number Diff line 
/* Ported over from i386 by AK, original copyright was:

 *

 * (C) Dominik Brodowski <linux@brodo.de> 2003

 *

 * Driver to use the Power Management Timer (PMTMR) available in some

 * southbridges as primary timing source for the Linux kernel.

 *

 * Based on parts of linux/drivers/acpi/hardware/hwtimer.c, timer_pit.c,

 * timer_hpet.c, and on Arjan van de Ven's implementation for 2.4.

 *

 * This file is licensed under the GPL v2.

 *

 * Dropped all the hardware bug workarounds for now. Hopefully they

 * are not needed on 64bit chipsets.

 */



#include <linux/jiffies.h>

#include <linux/kernel.h>

#include <linux/time.h>

#include <linux/init.h>

#include <linux/cpumask.h>

#include <linux/acpi_pmtmr.h>



#include <asm/io.h>

#include <asm/proto.h>

#include <asm/msr.h>

#include <asm/vsyscall.h>



static inline u32 cyc2us(u32 cycles)

{

	/* The Power Management Timer ticks at 3.579545 ticks per microsecond.

	 * 1 / PM_TIMER_FREQUENCY == 0.27936511 =~ 286/1024 [error: 0.024%]

	 *

	 * Even with HZ = 100, delta is at maximum 35796 ticks, so it can

	 * easily be multiplied with 286 (=0x11E) without having to fear

	 * u32 overflows.

	 */

	cycles *= 286;

	return (cycles >> 10);

}



static unsigned pmtimer_wait_tick(void)

{

	u32 a, b;

	for (a = b = inl(pmtmr_ioport) & ACPI_PM_MASK;

	     a == b;

	     b = inl(pmtmr_ioport) & ACPI_PM_MASK)

		cpu_relax();

	return b;

}



/* note: wait time is rounded up to one tick */

void pmtimer_wait(unsigned us)

{

	u32 a, b;

	a = pmtimer_wait_tick();

	do {

		b = inl(pmtmr_ioport);

		cpu_relax();

	} while (cyc2us(b - a) < us);

}



static int __init nopmtimer_setup(char *s)

{

	pmtmr_ioport = 0;

	return 1;

}



__setup("nopmtimer", nopmtimer_setup);

include/linux/acpi_pmtmr.h

+0 −2
Original line number Diff line number Diff line
@@ -25,8 +25,6 @@ static inline u32 acpi_pm_read_early(void) 
	return acpi_pm_read_verified() & ACPI_PM_MASK;

}



extern void pmtimer_wait(unsigned);



#else



static inline u32 acpi_pm_read_early(void)