diff options
| -rw-r--r-- | arch/x86/kernel/Makefile_32 | 2 | ||||
| -rw-r--r-- | arch/x86/kernel/rtc.c (renamed from include/asm-x86/mach-default/mach_time.h) | 83 | ||||
| -rw-r--r-- | arch/x86/kernel/time_32.c | 105 | ||||
| -rw-r--r-- | include/asm-x86/mc146818rtc.h | 3 | ||||
| -rw-r--r-- | include/asm-x86/time.h | 2 |
5 files changed, 78 insertions, 117 deletions
diff --git a/arch/x86/kernel/Makefile_32 b/arch/x86/kernel/Makefile_32 index 31ff982bc26b..eb2da53578d7 100644 --- a/arch/x86/kernel/Makefile_32 +++ b/arch/x86/kernel/Makefile_32 @@ -8,7 +8,7 @@ CPPFLAGS_vmlinux.lds += -Ui386 obj-y := process_32.o signal_32.o entry_32.o traps_32.o irq_32.o \ ptrace_32.o time_32.o ioport_32.o ldt.o setup_32.o i8259_32.o sys_i386_32.o \ pci-dma_32.o i386_ksyms_32.o i387_32.o bootflag.o e820_32.o\ - quirks.o i8237.o topology.o alternative.o i8253.o tsc_32.o io_delay.o + quirks.o i8237.o topology.o alternative.o i8253.o tsc_32.o io_delay.o rtc.o obj-$(CONFIG_STACKTRACE) += stacktrace.o obj-y += cpu/ diff --git a/include/asm-x86/mach-default/mach_time.h b/arch/x86/kernel/rtc.c index 31eb5de6f3dc..45bf54d9f4c5 100644 --- a/include/asm-x86/mach-default/mach_time.h +++ b/arch/x86/kernel/rtc.c @@ -1,18 +1,10 @@ /* - * include/asm-i386/mach-default/mach_time.h - * - * Machine specific set RTC function for generic. - * Split out from time.c by Osamu Tomita <tomita@cinet.co.jp> + * RTC related functions */ -#ifndef _MACH_TIME_H -#define _MACH_TIME_H - +#include <linux/bcd.h> #include <linux/mc146818rtc.h> -/* for check timing call set_rtc_mmss() 500ms */ -/* used in arch/i386/time.c::do_timer_interrupt() */ -#define USEC_AFTER 500000 -#define USEC_BEFORE 500000 +#include <asm/time.h> /* * In order to set the CMOS clock precisely, set_rtc_mmss has to be @@ -24,7 +16,7 @@ * BUG: This routine does not handle hour overflow properly; it just * sets the minutes. Usually you'll only notice that after reboot! */ -static inline int mach_set_rtc_mmss(unsigned long nowtime) +int mach_set_rtc_mmss(unsigned long nowtime) { int retval = 0; int real_seconds, real_minutes, cmos_minutes; @@ -79,7 +71,7 @@ static inline int mach_set_rtc_mmss(unsigned long nowtime) return retval; } -static inline unsigned long mach_get_cmos_time(void) +unsigned long mach_get_cmos_time(void) { unsigned int year, mon, day, hour, min, sec; @@ -108,4 +100,67 @@ static inline unsigned long mach_get_cmos_time(void) return mktime(year, mon, day, hour, min, sec); } -#endif /* !_MACH_TIME_H */ +DEFINE_SPINLOCK(rtc_lock); +EXPORT_SYMBOL(rtc_lock); + +/* + * This is a special lock that is owned by the CPU and holds the index + * register we are working with. It is required for NMI access to the + * CMOS/RTC registers. See include/asm-i386/mc146818rtc.h for details. + */ +volatile unsigned long cmos_lock = 0; +EXPORT_SYMBOL(cmos_lock); + +/* Routines for accessing the CMOS RAM/RTC. */ +unsigned char rtc_cmos_read(unsigned char addr) +{ + unsigned char val; + + lock_cmos_prefix(addr); + outb_p(addr, RTC_PORT(0)); + val = inb_p(RTC_PORT(1)); + lock_cmos_suffix(addr); + return val; +} +EXPORT_SYMBOL(rtc_cmos_read); + +void rtc_cmos_write(unsigned char val, unsigned char addr) +{ + lock_cmos_prefix(addr); + outb_p(addr, RTC_PORT(0)); + outb_p(val, RTC_PORT(1)); + lock_cmos_suffix(addr); +} +EXPORT_SYMBOL(rtc_cmos_write); + +static int set_rtc_mmss(unsigned long nowtime) +{ + int retval; + unsigned long flags; + + /* gets recalled with irq locally disabled */ + /* XXX - does irqsave resolve this? -johnstul */ + spin_lock_irqsave(&rtc_lock, flags); + retval = set_wallclock(nowtime); + spin_unlock_irqrestore(&rtc_lock, flags); + + return retval; +} + +/* not static: needed by APM */ +unsigned long read_persistent_clock(void) +{ + unsigned long retval; + unsigned long flags; + + spin_lock_irqsave(&rtc_lock, flags); + retval = get_wallclock(); + spin_unlock_irqrestore(&rtc_lock, flags); + + return retval; +} + +int update_persistent_clock(struct timespec now) +{ + return set_rtc_mmss(now.tv_sec); +} diff --git a/arch/x86/kernel/time_32.c b/arch/x86/kernel/time_32.c index 8a322c96bc23..e9ead762abe8 100644 --- a/arch/x86/kernel/time_32.c +++ b/arch/x86/kernel/time_32.c @@ -28,98 +28,21 @@ * serialize accesses to xtime/lost_ticks). */ -#include <linux/errno.h> -#include <linux/sched.h> -#include <linux/kernel.h> -#include <linux/param.h> -#include <linux/string.h> -#include <linux/mm.h> +#include <linux/init.h> #include <linux/interrupt.h> #include <linux/time.h> -#include <linux/delay.h> -#include <linux/init.h> -#include <linux/smp.h> -#include <linux/module.h> -#include <linux/sysdev.h> -#include <linux/bcd.h> -#include <linux/efi.h> #include <linux/mca.h> -#include <asm/io.h> -#include <asm/smp.h> -#include <asm/irq.h> -#include <asm/msr.h> -#include <asm/delay.h> -#include <asm/mpspec.h> -#include <asm/uaccess.h> -#include <asm/processor.h> -#include <asm/timer.h> -#include <asm/time.h> - -#include "mach_time.h" - -#include <linux/timex.h> - -#include <asm/hpet.h> - #include <asm/arch_hooks.h> +#include <asm/hpet.h> +#include <asm/time.h> #include "io_ports.h" - -#include <asm/i8259.h> - #include "do_timer.h" unsigned int cpu_khz; /* Detected as we calibrate the TSC */ EXPORT_SYMBOL(cpu_khz); -DEFINE_SPINLOCK(rtc_lock); -EXPORT_SYMBOL(rtc_lock); - -/* - * This is a special lock that is owned by the CPU and holds the index - * register we are working with. It is required for NMI access to the - * CMOS/RTC registers. See include/asm-i386/mc146818rtc.h for details. - */ -volatile unsigned long cmos_lock = 0; -EXPORT_SYMBOL(cmos_lock); - -/* Routines for accessing the CMOS RAM/RTC. */ -unsigned char rtc_cmos_read(unsigned char addr) -{ - unsigned char val; - lock_cmos_prefix(addr); - outb_p(addr, RTC_PORT(0)); - val = inb_p(RTC_PORT(1)); - lock_cmos_suffix(addr); - return val; -} -EXPORT_SYMBOL(rtc_cmos_read); - -void rtc_cmos_write(unsigned char val, unsigned char addr) -{ - lock_cmos_prefix(addr); - outb_p(addr, RTC_PORT(0)); - outb_p(val, RTC_PORT(1)); - lock_cmos_suffix(addr); -} -EXPORT_SYMBOL(rtc_cmos_write); - -static int set_rtc_mmss(unsigned long nowtime) -{ - int retval; - unsigned long flags; - - /* gets recalled with irq locally disabled */ - /* XXX - does irqsave resolve this? -johnstul */ - spin_lock_irqsave(&rtc_lock, flags); - retval = set_wallclock(nowtime); - spin_unlock_irqrestore(&rtc_lock, flags); - - return retval; -} - - int timer_ack; unsigned long profile_pc(struct pt_regs *regs) @@ -137,7 +60,7 @@ unsigned long profile_pc(struct pt_regs *regs) /* Return address is either directly at stack pointer or above a saved eflags. Eflags has bits 22-31 zero, kernel addresses don't. */ - if (sp[0] >> 22) + if (sp[0] >> 22) return sp[0]; if (sp[1] >> 22) return sp[1]; @@ -193,26 +116,6 @@ irqreturn_t timer_interrupt(int irq, void *dev_id) return IRQ_HANDLED; } -/* not static: needed by APM */ -unsigned long read_persistent_clock(void) -{ - unsigned long retval; - unsigned long flags; - - spin_lock_irqsave(&rtc_lock, flags); - - retval = get_wallclock(); - - spin_unlock_irqrestore(&rtc_lock, flags); - - return retval; -} - -int update_persistent_clock(struct timespec now) -{ - return set_rtc_mmss(now.tv_sec); -} - extern void (*late_time_init)(void); /* Duplicate of time_init() below, with hpet_enable part added */ void __init hpet_time_init(void) diff --git a/include/asm-x86/mc146818rtc.h b/include/asm-x86/mc146818rtc.h index 9d39436df231..cdd9f965835a 100644 --- a/include/asm-x86/mc146818rtc.h +++ b/include/asm-x86/mc146818rtc.h @@ -92,6 +92,9 @@ static inline unsigned char current_lock_cmos_reg(void) unsigned char rtc_cmos_read(unsigned char addr); void rtc_cmos_write(unsigned char val, unsigned char addr); +extern int mach_set_rtc_mmss(unsigned long nowtime); +extern unsigned long mach_get_cmos_time(void); + #define RTC_IRQ 8 #endif /* _ASM_MC146818RTC_H */ diff --git a/include/asm-x86/time.h b/include/asm-x86/time.h index eac011366dc2..b3f94cd81ac6 100644 --- a/include/asm-x86/time.h +++ b/include/asm-x86/time.h @@ -2,7 +2,7 @@ #define _ASMi386_TIME_H #include <linux/efi.h> -#include "mach_time.h" +#include <asm/mc146818rtc.h> static inline unsigned long native_get_wallclock(void) { |