}
EXPORT_SYMBOL(profile_pc);
+/* 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);
+
/*
* 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
-#ifdef CONFIG_X86_32
-# include "mc146818rtc_32.h"
+/*
+ * Machine dependent access functions for RTC registers.
+ */
+#ifndef _ASM_MC146818RTC_H
+#define _ASM_MC146818RTC_H
+
+#include <asm/io.h>
+#include <asm/system.h>
+#include <asm/processor.h>
+#include <linux/mc146818rtc.h>
+
+#ifndef RTC_PORT
+#define RTC_PORT(x) (0x70 + (x))
+#define RTC_ALWAYS_BCD 1 /* RTC operates in binary mode */
+#endif
+
+#if defined(CONFIG_X86_32) && defined(__HAVE_ARCH_CMPXCHG)
+/*
+ * This lock provides nmi access to the CMOS/RTC registers. It has some
+ * special properties. It is owned by a CPU and stores the index register
+ * currently being accessed (if owned). The idea here is that it works
+ * like a normal lock (normally). However, in an NMI, the NMI code will
+ * first check to see if its CPU owns the lock, meaning that the NMI
+ * interrupted during the read/write of the device. If it does, it goes ahead
+ * and performs the access and then restores the index register. If it does
+ * not, it locks normally.
+ *
+ * Note that since we are working with NMIs, we need this lock even in
+ * a non-SMP machine just to mark that the lock is owned.
+ *
+ * This only works with compare-and-swap. There is no other way to
+ * atomically claim the lock and set the owner.
+ */
+#include <linux/smp.h>
+extern volatile unsigned long cmos_lock;
+
+/*
+ * All of these below must be called with interrupts off, preempt
+ * disabled, etc.
+ */
+
+static inline void lock_cmos(unsigned char reg)
+{
+ unsigned long new;
+ new = ((smp_processor_id()+1) << 8) | reg;
+ for (;;) {
+ if (cmos_lock) {
+ cpu_relax();
+ continue;
+ }
+ if (__cmpxchg(&cmos_lock, 0, new, sizeof(cmos_lock)) == 0)
+ return;
+ }
+}
+
+static inline void unlock_cmos(void)
+{
+ cmos_lock = 0;
+}
+static inline int do_i_have_lock_cmos(void)
+{
+ return (cmos_lock >> 8) == (smp_processor_id()+1);
+}
+static inline unsigned char current_lock_cmos_reg(void)
+{
+ return cmos_lock & 0xff;
+}
+#define lock_cmos_prefix(reg) \
+ do { \
+ unsigned long cmos_flags; \
+ local_irq_save(cmos_flags); \
+ lock_cmos(reg)
+#define lock_cmos_suffix(reg) \
+ unlock_cmos(); \
+ local_irq_restore(cmos_flags); \
+ } while (0)
#else
-# include "mc146818rtc_64.h"
+#define lock_cmos_prefix(reg) do {} while (0)
+#define lock_cmos_suffix(reg) do {} while (0)
+#define lock_cmos(reg)
+#define unlock_cmos()
+#define do_i_have_lock_cmos() 0
+#define current_lock_cmos_reg() 0
#endif
+
+/*
+ * The yet supported machines all access the RTC index register via
+ * an ISA port access but the way to access the date register differs ...
+ */
+#define CMOS_READ(addr) rtc_cmos_read(addr)
+#define CMOS_WRITE(val, addr) rtc_cmos_write(val, addr)
+unsigned char rtc_cmos_read(unsigned char addr);
+void rtc_cmos_write(unsigned char val, unsigned char addr);
+
+#define RTC_IRQ 8
+
+#endif /* _ASM_MC146818RTC_H */
+++ /dev/null
-/*
- * Machine dependent access functions for RTC registers.
- */
-#ifndef _ASM_MC146818RTC_H
-#define _ASM_MC146818RTC_H
-
-#include <asm/io.h>
-#include <asm/system.h>
-#include <asm/processor.h>
-#include <linux/mc146818rtc.h>
-
-#ifndef RTC_PORT
-#define RTC_PORT(x) (0x70 + (x))
-#define RTC_ALWAYS_BCD 1 /* RTC operates in binary mode */
-#endif
-
-#ifdef __HAVE_ARCH_CMPXCHG
-/*
- * This lock provides nmi access to the CMOS/RTC registers. It has some
- * special properties. It is owned by a CPU and stores the index register
- * currently being accessed (if owned). The idea here is that it works
- * like a normal lock (normally). However, in an NMI, the NMI code will
- * first check to see if its CPU owns the lock, meaning that the NMI
- * interrupted during the read/write of the device. If it does, it goes ahead
- * and performs the access and then restores the index register. If it does
- * not, it locks normally.
- *
- * Note that since we are working with NMIs, we need this lock even in
- * a non-SMP machine just to mark that the lock is owned.
- *
- * This only works with compare-and-swap. There is no other way to
- * atomically claim the lock and set the owner.
- */
-#include <linux/smp.h>
-extern volatile unsigned long cmos_lock;
-
-/*
- * All of these below must be called with interrupts off, preempt
- * disabled, etc.
- */
-
-static inline void lock_cmos(unsigned char reg)
-{
- unsigned long new;
- new = ((smp_processor_id()+1) << 8) | reg;
- for (;;) {
- if (cmos_lock) {
- cpu_relax();
- continue;
- }
- if (__cmpxchg(&cmos_lock, 0, new, sizeof(cmos_lock)) == 0)
- return;
- }
-}
-
-static inline void unlock_cmos(void)
-{
- cmos_lock = 0;
-}
-static inline int do_i_have_lock_cmos(void)
-{
- return (cmos_lock >> 8) == (smp_processor_id()+1);
-}
-static inline unsigned char current_lock_cmos_reg(void)
-{
- return cmos_lock & 0xff;
-}
-#define lock_cmos_prefix(reg) \
- do { \
- unsigned long cmos_flags; \
- local_irq_save(cmos_flags); \
- lock_cmos(reg)
-#define lock_cmos_suffix(reg) \
- unlock_cmos(); \
- local_irq_restore(cmos_flags); \
- } while (0)
-#else
-#define lock_cmos_prefix(reg) do {} while (0)
-#define lock_cmos_suffix(reg) do {} while (0)
-#define lock_cmos(reg)
-#define unlock_cmos()
-#define do_i_have_lock_cmos() 0
-#define current_lock_cmos_reg() 0
-#endif
-
-/*
- * The yet supported machines all access the RTC index register via
- * an ISA port access but the way to access the date register differs ...
- */
-#define CMOS_READ(addr) rtc_cmos_read(addr)
-#define CMOS_WRITE(val, addr) rtc_cmos_write(val, addr)
-unsigned char rtc_cmos_read(unsigned char addr);
-void rtc_cmos_write(unsigned char val, unsigned char addr);
-
-#define RTC_IRQ 8
-
-#endif /* _ASM_MC146818RTC_H */
+++ /dev/null
-/*
- * Machine dependent access functions for RTC registers.
- */
-#ifndef _ASM_MC146818RTC_H
-#define _ASM_MC146818RTC_H
-
-#include <asm/io.h>
-
-#ifndef RTC_PORT
-#define RTC_PORT(x) (0x70 + (x))
-#define RTC_ALWAYS_BCD 1 /* RTC operates in binary mode */
-#endif
-
-/*
- * The yet supported machines all access the RTC index register via
- * an ISA port access but the way to access the date register differs ...
- */
-#define CMOS_READ(addr) ({ \
-outb_p((addr),RTC_PORT(0)); \
-inb_p(RTC_PORT(1)); \
-})
-#define CMOS_WRITE(val, addr) ({ \
-outb_p((addr),RTC_PORT(0)); \
-outb_p((val),RTC_PORT(1)); \
-})
-
-#define RTC_IRQ 8
-
-#endif /* _ASM_MC146818RTC_H */
projects / linux-2.6 / commitdiff