svn commit: r256793 - in head/sys: conf powerpc/aim powerpc/booke powerpc/powerpc

Nathan Whitehorn nwhitehorn at FreeBSD.org
Sun Oct 20 16:37:04 UTC 2013


Author: nwhitehorn
Date: Sun Oct 20 16:37:03 2013
New Revision: 256793
URL: http://svnweb.freebsd.org/changeset/base/256793

Log:
  Replace the two almost-exactly-identical AIM and Book-E clock.c
  implementations with a single one after the application of a very small
  amount of #ifdef.

Added:
  head/sys/powerpc/powerpc/clock.c
     - copied, changed from r256769, head/sys/powerpc/aim/clock.c
Deleted:
  head/sys/powerpc/aim/clock.c
  head/sys/powerpc/booke/clock.c
Modified:
  head/sys/conf/files.powerpc
  head/sys/powerpc/aim/machdep.c

Modified: head/sys/conf/files.powerpc
==============================================================================
--- head/sys/conf/files.powerpc	Sun Oct 20 16:14:03 2013	(r256792)
+++ head/sys/conf/files.powerpc	Sun Oct 20 16:37:03 2013	(r256793)
@@ -85,7 +85,6 @@ libkern/qdivrem.c		optional	powerpc
 libkern/ucmpdi2.c		optional	powerpc
 libkern/udivdi3.c		optional	powerpc
 libkern/umoddi3.c		optional	powerpc
-powerpc/aim/clock.c		optional	aim
 powerpc/aim/copyinout.c		optional	aim
 powerpc/aim/interrupt.c		optional	aim
 powerpc/aim/locore.S		optional	aim no-obj
@@ -101,7 +100,6 @@ powerpc/aim/swtch32.S		optional	aim powe
 powerpc/aim/swtch64.S		optional	aim powerpc64
 powerpc/aim/trap.c		optional	aim
 powerpc/aim/uma_machdep.c	optional	aim
-powerpc/booke/clock.c		optional	booke
 powerpc/booke/copyinout.c	optional	booke
 powerpc/booke/interrupt.c	optional	booke
 powerpc/booke/locore.S		optional	booke no-obj
@@ -178,6 +176,7 @@ powerpc/powerpc/autoconf.c	standard
 powerpc/powerpc/bcopy.c		standard
 powerpc/powerpc/bus_machdep.c	standard
 powerpc/powerpc/busdma_machdep.c standard
+powerpc/powerpc/clock.c		standard
 powerpc/powerpc/copystr.c	standard
 powerpc/powerpc/cpu.c		standard
 powerpc/powerpc/db_disasm.c	optional	ddb

Modified: head/sys/powerpc/aim/machdep.c
==============================================================================
--- head/sys/powerpc/aim/machdep.c	Sun Oct 20 16:14:03 2013	(r256792)
+++ head/sys/powerpc/aim/machdep.c	Sun Oct 20 16:37:03 2013	(r256793)
@@ -646,14 +646,6 @@ cpu_flush_dcache(void *ptr, size_t len)
 	/* TBD */
 }
 
-void
-cpu_initclocks(void)
-{
-
-	decr_tc_init();
-	cpu_initclocks_bsp();
-}
-
 /*
  * Shutdown the CPU as much as possible.
  */

Copied and modified: head/sys/powerpc/powerpc/clock.c (from r256769, head/sys/powerpc/aim/clock.c)
==============================================================================
--- head/sys/powerpc/aim/clock.c	Sat Oct 19 10:00:51 2013	(r256769, copy source)
+++ head/sys/powerpc/powerpc/clock.c	Sun Oct 20 16:37:03 2013	(r256793)
@@ -119,6 +119,14 @@ decr_intr(struct trapframe *frame)
 
 	(*decr_counts[curcpu])++;
 
+#ifdef BOOKE
+	/*
+	 * Interrupt handler must reset DIS to avoid getting another
+	 * interrupt once EE is enabled.
+	 */
+	mtspr(SPR_TSR, TSR_DIS);
+#endif
+
 	if (s->mode == 1) {
 		/*
 		 * Based on the actual time delay since the last decrementer
@@ -141,6 +149,14 @@ decr_intr(struct trapframe *frame)
 	}
 }
 
+void
+cpu_initclocks(void)
+{
+
+	decr_tc_init();
+	cpu_initclocks_bsp();
+}
+
 /*
  * BSP early initialization.
  */
@@ -207,11 +223,13 @@ decr_tc_init(void)
  * Event timer start method.
  */
 static int
-decr_et_start(struct eventtimer *et,
-    sbintime_t first, sbintime_t period)
+decr_et_start(struct eventtimer *et, sbintime_t first, sbintime_t period)
 {
 	struct decr_state *s = DPCPU_PTR(decr_state);
 	uint32_t fdiv;
+#ifdef BOOKE
+	uint32_t tcr;
+#endif
 
 	if (period != 0) {
 		s->mode = 1;
@@ -220,12 +238,25 @@ decr_et_start(struct eventtimer *et,
 		s->mode = 2;
 		s->div = 0;
 	}
-	if (first != 0) {
+	if (first != 0)
 		fdiv = (decr_et.et_frequency * first) >> 32;
-	} else
+	else
 		fdiv = s->div;
 
+#ifdef BOOKE
+	tcr = mfspr(SPR_TCR);
+	tcr |= TCR_DIE;
+	if (s->mode == 1) {
+		mtspr(SPR_DECAR, s->div);
+		tcr |= TCR_ARE;
+	} else
+		tcr &= ~TCR_ARE;
 	mtdec(fdiv);
+	mtspr(SPR_TCR, tcr);
+#else
+	mtdec(fdiv);
+#endif
+
 	return (0);
 }
 
@@ -236,10 +267,19 @@ static int
 decr_et_stop(struct eventtimer *et)
 {
 	struct decr_state *s = DPCPU_PTR(decr_state);
+#ifdef BOOKE
+	uint32_t tcr;
+#endif
 
 	s->mode = 0;
 	s->div = 0x7fffffff;
+#ifdef BOOKE
+	tcr = mfspr(SPR_TCR);
+	tcr &= ~(TCR_DIE | TCR_ARE);
+	mtspr(SPR_TCR, tcr);
+#else
 	mtdec(s->div);
+#endif
 	return (0);
 }
 
@@ -249,10 +289,7 @@ decr_et_stop(struct eventtimer *et)
 static unsigned
 decr_get_timecount(struct timecounter *tc)
 {
-	register_t tb;
-
-	__asm __volatile("mftb %0" : "=r"(tb));
-	return (tb);
+	return (mftb());
 }
 
 /*


More information about the svn-src-all mailing list