PERFORCE change 144249 for review

[Andrew Turner]

http://perforce.freebsd.org/chv.cgi?CH=144249

Change 144249 by andrew at andrew_bender on 2008/06/29 00:17:25

	Enter into idle mode when there is no work to be done

Affected files ...

.. //depot/projects/arm/src/sys/arm/s3c2xx0/neo1973_machdep.c#7 edit
.. //depot/projects/arm/src/sys/arm/s3c2xx0/s3c2410.c#15 edit
.. //depot/projects/arm/src/sys/arm/s3c2xx0/s3c24x0var.h#3 edit

Differences ...

==== //depot/projects/arm/src/sys/arm/s3c2xx0/neo1973_machdep.c#7 (text+ko) ====

@@ -91,6 +91,7 @@
 #include <machine/bus.h>
 #include <sys/reboot.h>
 
+#include <arm/s3c2xx0/s3c24x0var.h>
 #include <arm/s3c2xx0/s3c2410reg.h>
 
 #define KERNEL_PT_SYS		0	/* Page table for mapping proc0 zero page */
@@ -211,6 +212,7 @@
 	boothowto = RB_SINGLE;
 
 	set_cpufuncs();
+	cpufuncs.cf_sleep = s3c24x0_sleep;
 	lastaddr = fake_preload_metadata();
 
 	pcpu_init(pcpup, 0, sizeof(struct pcpu));

==== //depot/projects/arm/src/sys/arm/s3c2xx0/s3c2410.c#15 (text+ko) ====

@@ -400,6 +400,16 @@
 	for(;;);
 }
 
+void
+s3c24x0_sleep(int mode __unused)
+{
+	int reg;
+
+	reg = bus_space_read_4(&s3c2xx0_bs_tag, s3c2xx0_softc->sc_clkman_ioh, CLKMAN_CLKCON);
+	bus_space_write_4(&s3c2xx0_bs_tag, s3c2xx0_softc->sc_clkman_ioh, CLKMAN_CLKCON, reg | CLKCON_IDLE);
+}
+
+
 int
 arm_get_next_irq(void)
 {

==== //depot/projects/arm/src/sys/arm/s3c2xx0/s3c24x0var.h#3 (text+ko) ====

@@ -44,4 +44,6 @@
 void	s3c24x0_clock_freq(struct s3c2xx0_softc *);
 void	s3c24x0_clock_freq2(vm_offset_t, int *, int *, int *);
 
+void	s3c24x0_sleep(int);
+
 #endif /* _ARM_S3C24X0VAR_H_ */