From 84ceee3fee2097c90e0c94ef207c5167df534233 Mon Sep 17 00:00:00 2001
From: kettenis <kettenis@openbsd.org>
Date: Sat, 24 Jul 2010 21:27:57 +0000
Subject: [PATCH] Switch hppa64 to timecounters.

---
 sys/arch/hppa64/dev/clock.c      | 34 ++++++++++++++++++++++++++------
 sys/arch/hppa64/hppa64/machdep.c | 18 +++++++++++------
 sys/arch/hppa64/include/_types.h |  5 ++++-
 sys/arch/hppa64/include/cpu.h    |  4 +++-
 4 files changed, 47 insertions(+), 14 deletions(-)

diff --git a/sys/arch/hppa64/dev/clock.c b/sys/arch/hppa64/dev/clock.c
index 2c68f463ca2..5100f9869e2 100644
--- a/sys/arch/hppa64/dev/clock.c
+++ b/sys/arch/hppa64/dev/clock.c
@@ -1,4 +1,4 @@
-/*	$OpenBSD: clock.c,v 1.1 2005/04/01 10:40:47 mickey Exp $	*/
+/*	$OpenBSD: clock.c,v 1.2 2010/07/24 21:27:57 kettenis Exp $	*/
 
 /*
  * Copyright (c) 2005 Michael Shalayeff
@@ -20,24 +20,46 @@
 #include <sys/param.h>
 #include <sys/systm.h>
 #include <sys/kernel.h>
-#include <sys/time.h>
+#include <sys/timetc.h>
+
+#include <machine/iomod.h>
+#include <machine/reg.h>
 
 #include <dev/clock_subr.h>
 
+u_long	cpu_hzticks;
+
+u_int	itmr_get_timecount(struct timecounter *);
+
+struct timecounter itmr_timecounter = {
+	itmr_get_timecount, NULL, 0xffffffff, 0, "itmr", 0, NULL
+};
+
 void
 cpu_initclocks()
 {
+	struct cpu_info *ci = curcpu();
+	u_long __itmr;
+
+	cpu_hzticks = (PAGE0->mem_10msec * 100) / hz;
 
+	itmr_timecounter.tc_frequency = PAGE0->mem_10msec * 100;
+	tc_init(&itmr_timecounter);
+
+	__itmr = mfctl(CR_ITMR);
+	ci->ci_itmr = __itmr;
+	__itmr += cpu_hzticks;
+	mtctl(__itmr, CR_ITMR);
 }
 
 void
 setstatclockrate(int newhz)
 {
-
+	/* nothing we can do */
 }
 
-void
-microtime(struct timeval *tv)
+u_int
+itmr_get_timecount(struct timecounter *tc)
 {
-
+	return (mfctl(CR_ITMR));
 }
diff --git a/sys/arch/hppa64/hppa64/machdep.c b/sys/arch/hppa64/hppa64/machdep.c
index a2ebc2f89db..68e9788f868 100644
--- a/sys/arch/hppa64/hppa64/machdep.c
+++ b/sys/arch/hppa64/hppa64/machdep.c
@@ -1,4 +1,4 @@
-/*	$OpenBSD: machdep.c,v 1.25 2010/07/01 05:09:27 jsing Exp $	*/
+/*	$OpenBSD: machdep.c,v 1.26 2010/07/24 21:27:57 kettenis Exp $	*/
 
 /*
  * Copyright (c) 2005 Michael Shalayeff
@@ -39,6 +39,7 @@
 #include <sys/core.h>
 #include <sys/kcore.h>
 #include <sys/extent.h>
+#include <sys/timetc.h>
 
 #include <sys/mount.h>
 #include <sys/syscallargs.h>
@@ -434,6 +435,7 @@ inittodr(t)
 {
 	struct pdc_tod tod PDC_ALIGNMENT;
 	int 	error, tbad = 0;
+	struct timespec ts;
 
 	if (t < 12*SECYR) {
 		printf ("WARNING: preposterous time in file system");
@@ -445,18 +447,19 @@ inittodr(t)
 	    1, PDC_TOD, PDC_TOD_READ, &tod, 0, 0, 0, 0, 0)))
 		printf("clock: failed to fetch (%d)\n", error);
 
-	time.tv_sec = tod.sec;
-	time.tv_usec = tod.usec;
+	ts.tv_sec = tod.sec;
+	ts.tv_nsec = tod.usec * 1000;
+	tc_setclock(&ts);
 
 	if (!tbad) {
 		u_long	dt;
 
-		dt = (time.tv_sec < t)?  t - time.tv_sec : time.tv_sec - t;
+		dt = (tod.sec < t)?  t - tod.sec : tod.sec - t;
 
 		if (dt < 2 * SECDAY)
 			return;
 		printf("WARNING: clock %s %ld days",
-		    time.tv_sec < t? "lost" : "gained", dt / SECDAY);
+		    tod.sec < t? "lost" : "gained", dt / SECDAY);
 	}
 
 	printf (" -- CHECK AND RESET THE DATE!\n");
@@ -468,10 +471,13 @@ inittodr(t)
 void
 resettodr()
 {
+	struct timeval tv;
 	int error;
 
+	microtime(&tv);
+
 	if ((error = pdc_call((iodcio_t)pdc, 1, PDC_TOD, PDC_TOD_WRITE,
-	    time.tv_sec, time.tv_usec)))
+	    tv.tv_sec, tv.tv_usec)))
 		printf("clock: failed to save (%d)\n", error);
 }
 
diff --git a/sys/arch/hppa64/include/_types.h b/sys/arch/hppa64/include/_types.h
index 540fc9bd27d..f6d4586f18a 100644
--- a/sys/arch/hppa64/include/_types.h
+++ b/sys/arch/hppa64/include/_types.h
@@ -1,4 +1,4 @@
-/*	$OpenBSD: _types.h,v 1.4 2008/07/21 20:50:54 martynas Exp $	*/
+/*	$OpenBSD: _types.h,v 1.5 2010/07/24 21:27:57 kettenis Exp $	*/
 
 /*-
  * Copyright (c) 1990, 1993
@@ -120,4 +120,7 @@ typedef	int			__rune_t;
 typedef	void *			__wctrans_t;
 typedef	void *			__wctype_t;
 
+/* Feature test macros */
+#define __HAVE_TIMECOUNTER
+
 #endif	/* _HPPA64__TYPES_H_ */
diff --git a/sys/arch/hppa64/include/cpu.h b/sys/arch/hppa64/include/cpu.h
index fa530c00c71..76bf2fca2a0 100644
--- a/sys/arch/hppa64/include/cpu.h
+++ b/sys/arch/hppa64/include/cpu.h
@@ -1,4 +1,4 @@
-/*	$OpenBSD: cpu.h,v 1.16 2009/11/25 23:18:14 jsing Exp $	*/
+/*	$OpenBSD: cpu.h,v 1.17 2010/07/24 21:27:57 kettenis Exp $	*/
 
 /*
  * Copyright (c) 2005 Michael Shalayeff
@@ -135,6 +135,8 @@ struct cpu_info {
 	/* Spinning up the CPU */
 	void		(*ci_spinup)(void); /* spinup routine */
 	void		*ci_initstack;
+
+	u_long		ci_itmr;
 };
 
 struct cpu_info *curcpu(void);
-- 
2.20.1