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sparc32: Use PROM device probing for sun4c timers.

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Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
David S. Miller
2008-09-13 22:47:43 -07:00
parent 45bb5a7cbf
commit 8bd8deead7
2 changed files with 39 additions and 44 deletions
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24
arch/sparc/include/asm/timer_32.h
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@ -11,30 +11,6 @@
#include <asm/system.h> /* For SUN4M_NCPUS */
#include <asm/btfixup.h>
/* 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. Currently it is left untouched, we keep the PROM's limit
* register value and let the prom take these interrupts. This allows
* L1-A to work.
*/
struct sun4c_timer_info {
__volatile__ unsigned int cur_count10;
__volatile__ unsigned int timer_limit10;
__volatile__ unsigned int cur_count14;
__volatile__ unsigned int timer_limit14;
};
#define SUN_TIMER_PHYSADDR 0xf3000000
extern __volatile__ unsigned int *master_l10_counter;
extern __volatile__ unsigned int *master_l10_limit;