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authorMarc Zyngier <marc.zyngier@arm.com>2011-09-08 16:15:22 +0400
committerArnd Bergmann <arnd@arndb.de>2012-09-13 17:34:50 +0400
commit3695adc2fdaf3ad1881e0dd3e3422e5e141abd7d (patch)
treeb8bef89c2d2f7527a78b2241e7729c6858927012 /arch/arm/mach-realview
parentabcee5fb0dfbb248d883a2f6bdb4820abe3ac524 (diff)
downloadlinux-3695adc2fdaf3ad1881e0dd3e3422e5e141abd7d.tar.xz
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-realview')
-rw-r--r--arch/arm/mach-realview/core.h3
-rw-r--r--arch/arm/mach-realview/hotplug.c16
-rw-r--r--arch/arm/mach-realview/platsmp.c18
-rw-r--r--arch/arm/mach-realview/realview_pb11mp.c1
-rw-r--r--arch/arm/mach-realview/realview_pbx.c1
5 files changed, 20 insertions, 19 deletions
diff --git a/arch/arm/mach-realview/core.h b/arch/arm/mach-realview/core.h
index f8f2c0ac4c01..78cd970c80f2 100644
--- a/arch/arm/mach-realview/core.h
+++ b/arch/arm/mach-realview/core.h
@@ -56,4 +56,7 @@ extern void realview_init_early(void);
extern void realview_fixup(struct tag *tags, char **from,
struct meminfo *meminfo);
+extern struct smp_operations realview_smp_ops;
+extern void realview_cpu_die(unsigned int cpu);
+
#endif
diff --git a/arch/arm/mach-realview/hotplug.c b/arch/arm/mach-realview/hotplug.c
index 57d9efba2956..fef4f4495225 100644
--- a/arch/arm/mach-realview/hotplug.c
+++ b/arch/arm/mach-realview/hotplug.c
@@ -89,17 +89,12 @@ 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 realview_cpu_die(unsigned int cpu)
{
int spurious = 0;
@@ -118,12 +113,3 @@ 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-realview/platsmp.c b/arch/arm/mach-realview/platsmp.c
index 17c878ddbc70..300f7064465d 100644
--- a/arch/arm/mach-realview/platsmp.c
+++ b/arch/arm/mach-realview/platsmp.c
@@ -22,9 +22,9 @@
#include <mach/board-pb11mp.h>
#include <mach/board-pbx.h>
-#include "core.h"
+#include <plat/platsmp.h>
-extern void versatile_secondary_startup(void);
+#include "core.h"
static void __iomem *scu_base_addr(void)
{
@@ -43,7 +43,7 @@ static void __iomem *scu_base_addr(void)
* 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 realview_smp_init_cpus(void)
{
void __iomem *scu_base = scu_base_addr();
unsigned int i, ncores;
@@ -63,7 +63,7 @@ void __init smp_init_cpus(void)
set_smp_cross_call(gic_raise_softirq);
}
-void __init platform_smp_prepare_cpus(unsigned int max_cpus)
+static void __init realview_smp_prepare_cpus(unsigned int max_cpus)
{
scu_enable(scu_base_addr());
@@ -77,3 +77,13 @@ void __init platform_smp_prepare_cpus(unsigned int max_cpus)
__raw_writel(virt_to_phys(versatile_secondary_startup),
__io_address(REALVIEW_SYS_FLAGSSET));
}
+
+struct smp_operations realview_smp_ops __initdata = {
+ .smp_init_cpus = realview_smp_init_cpus,
+ .smp_prepare_cpus = realview_smp_prepare_cpus,
+ .smp_secondary_init = versatile_secondary_init,
+ .smp_boot_secondary = versatile_boot_secondary,
+#ifdef CONFIG_HOTPLUG_CPU
+ .cpu_die = realview_cpu_die,
+#endif
+};
diff --git a/arch/arm/mach-realview/realview_pb11mp.c b/arch/arm/mach-realview/realview_pb11mp.c
index a98c536e3327..2eacda179f77 100644
--- a/arch/arm/mach-realview/realview_pb11mp.c
+++ b/arch/arm/mach-realview/realview_pb11mp.c
@@ -366,6 +366,7 @@ static void __init realview_pb11mp_init(void)
MACHINE_START(REALVIEW_PB11MP, "ARM-RealView PB11MPCore")
/* Maintainer: ARM Ltd/Deep Blue Solutions Ltd */
.atag_offset = 0x100,
+ .smp = smp_ops(realview_smp_ops),
.fixup = realview_fixup,
.map_io = realview_pb11mp_map_io,
.init_early = realview_init_early,
diff --git a/arch/arm/mach-realview/realview_pbx.c b/arch/arm/mach-realview/realview_pbx.c
index 3f2f605624e9..2cd4f157c6fc 100644
--- a/arch/arm/mach-realview/realview_pbx.c
+++ b/arch/arm/mach-realview/realview_pbx.c
@@ -403,6 +403,7 @@ static void __init realview_pbx_init(void)
MACHINE_START(REALVIEW_PBX, "ARM-RealView PBX")
/* Maintainer: ARM Ltd/Deep Blue Solutions Ltd */
.atag_offset = 0x100,
+ .smp = smp_ops(realview_smp_ops),
.fixup = realview_pbx_fixup,
.map_io = realview_pbx_map_io,
.init_early = realview_init_early,