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- /* clock.h: Definitions for the clock/timer chips on the Sparc.
- *
- * Copyright (C) 1995 David S. Miller (davem@caip.rutgers.edu)
- */
-
- /* Clock timer structures. The interrupt timer has two properties which
- * are the counter (which is handled in do_timer in sched.c) and the limit.
- * This limit is where the timer's counter 'wraps' around. Oddly enough,
- * the sun4c timer when it hits the limit wraps back to 1 and not zero
- * thus when calculating the value at which it will fire a microsecond you
- * must adjust by one. Thanks SUN for designing such great hardware ;(
- */
-
- /* Note that I am only going to use the timer that interrupts at
- * Sparc IRQ 10. There is another one available that can fire at
- * IRQ 14. If I can think of some creative uses for it this may
- * change. It might make a nice kernel/user profiler etc.
- */
-
- struct sparc_timer_info {
- unsigned int cur_count10;
- unsigned int timer_limit10;
- unsigned int cur_count14;
- unsigned int timer_limit14;
- };
-
- struct sparc_clock_info {
- unsigned char hsec;
- unsigned char hr;
- unsigned char min;
- unsigned char sec;
- unsigned char mon;
- unsigned char day;
- unsigned char yr;
- unsigned char wkday;
- unsigned char ram_hsec;
- unsigned char ram_hr;
- unsigned char ram_min;
- unsigned char ram_sec;
- unsigned char ram_mon;
- unsigned char ram_day;
- unsigned char ram_year;
- unsigned char ram_wkday;
- unsigned char intr_reg;
- unsigned char cmd_reg;
- unsigned char foo[14];
- };
-
- #define TIMER_PHYSADDR 0xf3000000
-
- /* YUCK YUCK YUCK, grrr... */
- #define TIMER_STRUCT ((struct sparc_timer_info *)((struct sparc_clock_info *) TIMER_VADDR))
-
-