X-Git-Url: http://git.onelab.eu/?a=blobdiff_plain;f=arch%2Fia64%2Fkernel%2Fcyclone.c;h=768c7e46957c0ed4a8da581c1c8315041d06d13f;hb=6a77f38946aaee1cd85eeec6cf4229b204c15071;hp=05ec3ca72b6059e5ddb1fb0a276f2ab21f4fec5b;hpb=5273a3df6485dc2ad6aa7ddd441b9a21970f003b;p=linux-2.6.git

diff --git a/arch/ia64/kernel/cyclone.c b/arch/ia64/kernel/cyclone.c
index 05ec3ca72..768c7e469 100644
--- a/arch/ia64/kernel/cyclone.c
+++ b/arch/ia64/kernel/cyclone.c
@@ -1,6 +1,8 @@
+#include <linux/module.h>
 #include <linux/smp.h>
 #include <linux/time.h>
 #include <linux/errno.h>
+#include <asm/io.h>
 
 /* IBM Summit (EXA) Cyclone counter code*/
 #define CYCLONE_CBAR_ADDR 0xFEB00CD0
@@ -10,70 +12,18 @@
 #define CYCLONE_TIMER_FREQ 100000000
 
 int use_cyclone;
-int __init cyclone_setup(char *str)
+void __init cyclone_setup(void)
 {
 	use_cyclone = 1;
-	return 1;
 }
 
-static u32* volatile cyclone_timer;	/* Cyclone MPMC0 register */
-static u32 last_update_cyclone;
-
-static unsigned long offset_base;
-
-static unsigned long get_offset_cyclone(void)
-{
-	u32 now;
-	unsigned long offset;
-
-	/* Read the cyclone timer */
-	now = readl(cyclone_timer);
-	/* .. relative to previous update*/
-	offset = now - last_update_cyclone;
-
-	/* convert cyclone ticks to nanoseconds */
-	offset = (offset*NSEC_PER_SEC)/CYCLONE_TIMER_FREQ;
-
-	/* our adjusted time in nanoseconds */
-	return offset_base + offset;
-}
-
-static void update_cyclone(long delta_nsec)
-{
-	u32 now;
-	unsigned long offset;
-
-	/* Read the cyclone timer */
-	now = readl(cyclone_timer);
-	/* .. relative to previous update*/
-	offset = now - last_update_cyclone;
-
-	/* convert cyclone ticks to nanoseconds */
-	offset = (offset*NSEC_PER_SEC)/CYCLONE_TIMER_FREQ;
-
-	offset += offset_base;
-
-	/* Be careful about signed/unsigned comparisons here: */
-	if (delta_nsec < 0 || (unsigned long) delta_nsec < offset)
-		offset_base = offset - delta_nsec;
-	else
-		offset_base = 0;
-
-	last_update_cyclone = now;
-}
-
-static void reset_cyclone(void)
-{
-	offset_base = 0;
-	last_update_cyclone = readl(cyclone_timer);
-}
 
 struct time_interpolator cyclone_interpolator = {
-	.get_offset =	get_offset_cyclone,
-	.update =	update_cyclone,
-	.reset =	reset_cyclone,
+	.source =	TIME_SOURCE_MMIO64,
+	.shift =	16,
 	.frequency =	CYCLONE_TIMER_FREQ,
 	.drift =	-100,
+	.mask =		(1LL << 40) - 1
 };
 
 int __init init_cyclone_clock(void)
@@ -82,6 +32,7 @@ int __init init_cyclone_clock(void)
 	u64 base;	/* saved cyclone base address */
 	u64 offset;	/* offset from pageaddr to cyclone_timer register */
 	int i;
+	u32* volatile cyclone_timer;	/* Cyclone MPMC0 register */
 
 	if (!use_cyclone)
 		return -ENODEV;
@@ -149,7 +100,7 @@ int __init init_cyclone_clock(void)
 		}
 	}
 	/* initialize last tick */
-	last_update_cyclone = readl(cyclone_timer);
+	cyclone_interpolator.addr = cyclone_timer;
 	register_time_interpolator(&cyclone_interpolator);
 
 	return 0;