summaryrefslogtreecommitdiffstats
path: root/include/asm-mips/time.h
diff options
context:
space:
mode:
Diffstat (limited to 'include/asm-mips/time.h')
-rw-r--r--include/asm-mips/time.h96
1 files changed, 96 insertions, 0 deletions
diff --git a/include/asm-mips/time.h b/include/asm-mips/time.h
new file mode 100644
index 0000000..e22a206
--- /dev/null
+++ b/include/asm-mips/time.h
@@ -0,0 +1,96 @@
+/*
+ * Copyright (C) 2001, 2002, MontaVista Software Inc.
+ * Author: Jun Sun, jsun@mvista.com or jsun@junsun.net
+ * Copyright (c) 2003 Maciej W. Rozycki
+ *
+ * include/asm-mips/time.h
+ * header file for the new style time.c file and time services.
+ *
+ * This program is free software; you can redistribute it and/or modify it
+ * under the terms of the GNU General Public License as published by the
+ * Free Software Foundation; either version 2 of the License, or (at your
+ * option) any later version.
+ *
+ * Please refer to Documentation/mips/time.README.
+ */
+#ifndef _ASM_TIME_H
+#define _ASM_TIME_H
+
+#include <linux/interrupt.h>
+#include <linux/linkage.h>
+#include <linux/ptrace.h>
+#include <linux/rtc.h>
+
+/*
+ * RTC ops. By default, they point to no-RTC functions.
+ * rtc_get_time - mktime(year, mon, day, hour, min, sec) in seconds.
+ * rtc_set_time - reverse the above translation and set time to RTC.
+ * rtc_set_mmss - similar to rtc_set_time, but only min and sec need
+ * to be set. Used by RTC sync-up.
+ */
+extern unsigned long (*rtc_get_time)(void);
+extern int (*rtc_set_time)(unsigned long);
+extern int (*rtc_set_mmss)(unsigned long);
+
+/*
+ * Timer interrupt functions.
+ * mips_timer_state is needed for high precision timer calibration.
+ * mips_timer_ack may be NULL if the interrupt is self-recoverable.
+ */
+extern int (*mips_timer_state)(void);
+extern void (*mips_timer_ack)(void);
+
+/*
+ * High precision timer functions.
+ * If mips_hpt_read is NULL, an R4k-compatible timer setup is attempted.
+ */
+extern unsigned int (*mips_hpt_read)(void);
+extern void (*mips_hpt_init)(unsigned int);
+
+/*
+ * to_tm() converts system time back to (year, mon, day, hour, min, sec).
+ * It is intended to help implement rtc_set_time() functions.
+ * Copied from PPC implementation.
+ */
+extern void to_tm(unsigned long tim, struct rtc_time *tm);
+
+/*
+ * do_gettimeoffset(). By default, this func pointer points to
+ * do_null_gettimeoffset(), which leads to the same resolution as HZ.
+ * Higher resolution versions are available, which give ~1us resolution.
+ */
+extern unsigned long (*do_gettimeoffset)(void);
+
+/*
+ * high-level timer interrupt routines.
+ */
+extern irqreturn_t timer_interrupt(int irq, void *dev_id, struct pt_regs *regs);
+
+/*
+ * the corresponding low-level timer interrupt routine.
+ */
+extern asmlinkage void ll_timer_interrupt(int irq, struct pt_regs *regs);
+
+/*
+ * profiling and process accouting is done separately in local_timer_interrupt
+ */
+extern void local_timer_interrupt(int irq, void *dev_id, struct pt_regs *regs);
+extern asmlinkage void ll_local_timer_interrupt(int irq, struct pt_regs *regs);
+
+/*
+ * board specific routines required by time_init().
+ * board_time_init is defaulted to NULL and can remain so.
+ * board_timer_setup must be setup properly in machine setup routine.
+ */
+struct irqaction;
+extern void (*board_time_init)(void);
+extern void (*board_timer_setup)(struct irqaction *irq);
+
+/*
+ * mips_hpt_frequency - must be set if you intend to use an R4k-compatible
+ * counter as a timer interrupt source; otherwise it can be set up
+ * automagically with an aid of mips_timer_state.
+ */
+extern unsigned int mips_hpt_frequency;
+
+#endif /* _ASM_TIME_H */
OpenPOWER on IntegriCloud