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authorMarc Zyngier <marc.zyngier@arm.com>2011-09-08 13:15:22 +0100
committerArnd Bergmann <arnd@arndb.de>2012-09-13 15:34:50 +0200
commit3695adc2fdaf3ad1881e0dd3e3422e5e141abd7d (patch)
treeb8bef89c2d2f7527a78b2241e7729c6858927012 /arch/arm/mach-vexpress
parentabcee5fb0dfbb248d883a2f6bdb4820abe3ac524 (diff)
downloadop-kernel-dev-3695adc2fdaf3ad1881e0dd3e3422e5e141abd7d.zip
op-kernel-dev-3695adc2fdaf3ad1881e0dd3e3422e5e141abd7d.tar.gz
ARM: SoC: convert VExpress/RealView to SMP operations
Convert both Realview and VExpress to use struct smp_operations to provide their SMP and CPU hotplug operation. Signed-off-by: Marc Zyngier <marc.zyngier@arm.com> Acked-by: Nicolas Pitre <nico@fluxnic.net> Signed-off-by: Arnd Bergmann <arnd@arndb.de>
Diffstat (limited to 'arch/arm/mach-vexpress')
-rw-r--r--arch/arm/mach-vexpress/core.h4
-rw-r--r--arch/arm/mach-vexpress/hotplug.c16
-rw-r--r--arch/arm/mach-vexpress/platsmp.c18
-rw-r--r--arch/arm/mach-vexpress/v2m.c4
4 files changed, 23 insertions, 19 deletions
diff --git a/arch/arm/mach-vexpress/core.h b/arch/arm/mach-vexpress/core.h
index a3a4980..f134cd4 100644
--- a/arch/arm/mach-vexpress/core.h
+++ b/arch/arm/mach-vexpress/core.h
@@ -5,3 +5,7 @@
#define V2T_PERIPH 0xf8200000
void vexpress_dt_smp_map_io(void);
+
+extern struct smp_operations vexpress_smp_ops;
+
+extern void vexpress_cpu_die(unsigned int cpu);
diff --git a/arch/arm/mach-vexpress/hotplug.c b/arch/arm/mach-vexpress/hotplug.c
index c504a72..734423a 100644
--- a/arch/arm/mach-vexpress/hotplug.c
+++ b/arch/arm/mach-vexpress/hotplug.c
@@ -84,17 +84,12 @@ static inline void platform_do_lowpower(unsigned int cpu, int *spurious)
}
}
-int platform_cpu_kill(unsigned int cpu)
-{
- return 1;
-}
-
/*
* platform-specific code to shutdown a CPU
*
* Called with IRQs disabled
*/
-void platform_cpu_die(unsigned int cpu)
+void __ref vexpress_cpu_die(unsigned int cpu)
{
int spurious = 0;
@@ -113,12 +108,3 @@ void platform_cpu_die(unsigned int cpu)
if (spurious)
pr_warn("CPU%u: %u spurious wakeup calls\n", cpu, spurious);
}
-
-int platform_cpu_disable(unsigned int cpu)
-{
- /*
- * we don't allow CPU 0 to be shutdown (it is still too special
- * e.g. clock tick interrupts)
- */
- return cpu == 0 ? -EPERM : 0;
-}
diff --git a/arch/arm/mach-vexpress/platsmp.c b/arch/arm/mach-vexpress/platsmp.c
index 14ba112..7db27c8 100644
--- a/arch/arm/mach-vexpress/platsmp.c
+++ b/arch/arm/mach-vexpress/platsmp.c
@@ -20,9 +20,9 @@
#include <mach/motherboard.h>
-#include "core.h"
+#include <plat/platsmp.h>
-extern void versatile_secondary_startup(void);
+#include "core.h"
#if defined(CONFIG_OF)
@@ -167,7 +167,7 @@ void __init vexpress_dt_smp_prepare_cpus(unsigned int max_cpus)
* Initialise the CPU possible map early - this describes the CPUs
* which may be present or become present in the system.
*/
-void __init smp_init_cpus(void)
+static void __init vexpress_smp_init_cpus(void)
{
if (ct_desc)
ct_desc->init_cpu_map();
@@ -176,7 +176,7 @@ void __init smp_init_cpus(void)
}
-void __init platform_smp_prepare_cpus(unsigned int max_cpus)
+static void __init vexpress_smp_prepare_cpus(unsigned int max_cpus)
{
/*
* Initialise the present map, which describes the set of CPUs
@@ -195,3 +195,13 @@ void __init platform_smp_prepare_cpus(unsigned int max_cpus)
*/
v2m_flags_set(virt_to_phys(versatile_secondary_startup));
}
+
+struct smp_operations __initdata vexpress_smp_ops = {
+ .smp_init_cpus = vexpress_smp_init_cpus,
+ .smp_prepare_cpus = vexpress_smp_prepare_cpus,
+ .smp_secondary_init = versatile_secondary_init,
+ .smp_boot_secondary = versatile_boot_secondary,
+#ifdef CONFIG_HOTPLUG_CPU
+ .cpu_die = vexpress_cpu_die,
+#endif
+};
diff --git a/arch/arm/mach-vexpress/v2m.c b/arch/arm/mach-vexpress/v2m.c
index 37608f2..722ef33 100644
--- a/arch/arm/mach-vexpress/v2m.c
+++ b/arch/arm/mach-vexpress/v2m.c
@@ -5,6 +5,7 @@
#include <linux/amba/bus.h>
#include <linux/amba/mmci.h>
#include <linux/io.h>
+#include <linux/smp.h>
#include <linux/init.h>
#include <linux/of_address.h>
#include <linux/of_fdt.h>
@@ -38,6 +39,7 @@
#include <mach/motherboard.h>
#include <plat/sched_clock.h>
+#include <plat/platsmp.h>
#include "core.h"
@@ -530,6 +532,7 @@ static void __init v2m_init(void)
MACHINE_START(VEXPRESS, "ARM-Versatile Express")
.atag_offset = 0x100,
+ .smp = smp_ops(vexpress_smp_ops),
.map_io = v2m_map_io,
.init_early = v2m_init_early,
.init_irq = v2m_init_irq,
@@ -663,6 +666,7 @@ const static char *v2m_dt_match[] __initconst = {
DT_MACHINE_START(VEXPRESS_DT, "ARM-Versatile Express")
.dt_compat = v2m_dt_match,
+ .smp = smp_ops(vexpress_smp_ops),
.map_io = v2m_dt_map_io,
.init_early = v2m_dt_init_early,
.init_irq = v2m_dt_init_irq,
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