[PATCH v9 08/13] ARM: SoC: convert shmobile SMP to SoC descriptor
From: Arnd Bergmann
Date: Wed Sep 12 2012 - 10:58:44 EST
From: Marc Zyngier <marc.zyngier@xxxxxxx>
Convert shmobile SMP platforms to use the SoC descriptor to provide
their SMP and CPU hotplug operations.
Cc: Paul Mundt <lethal@xxxxxxxxxxxx>
Cc: Magnus Damm <magnus.damm@xxxxxxxxx>
Signed-off-by: Marc Zyngier <marc.zyngier@xxxxxxx>
Signed-off-by: Arnd Bergmann <arnd@xxxxxxxx>
---
arch/arm/mach-shmobile/board-ag5evm.c | 1 +
arch/arm/mach-shmobile/board-kota2.c | 1 +
arch/arm/mach-shmobile/board-kzm9d.c | 1 +
arch/arm/mach-shmobile/board-kzm9g.c | 1 +
arch/arm/mach-shmobile/board-marzen.c | 1 +
arch/arm/mach-shmobile/hotplug.c | 31 +++-----
arch/arm/mach-shmobile/include/mach/common.h | 24 +++----
arch/arm/mach-shmobile/include/mach/emev2.h | 7 +-
arch/arm/mach-shmobile/include/mach/r8a7779.h | 2 +
arch/arm/mach-shmobile/include/mach/sh73a0.h | 2 +
arch/arm/mach-shmobile/platsmp.c | 96 +------------------------
arch/arm/mach-shmobile/setup-emev2.c | 1 +
arch/arm/mach-shmobile/smp-emev2.c | 47 ++++++++++--
arch/arm/mach-shmobile/smp-r8a7779.c | 48 +++++++++++--
arch/arm/mach-shmobile/smp-sh73a0.c | 48 +++++++++++--
15 files changed, 165 insertions(+), 146 deletions(-)
diff --git a/arch/arm/mach-shmobile/board-ag5evm.c b/arch/arm/mach-shmobile/board-ag5evm.c
index d82c010..81969e3 100644
--- a/arch/arm/mach-shmobile/board-ag5evm.c
+++ b/arch/arm/mach-shmobile/board-ag5evm.c
@@ -650,6 +650,7 @@ static void __init ag5evm_init(void)
}
MACHINE_START(AG5EVM, "ag5evm")
+ .smp = smp_ops(sh73a0_smp_ops),
.map_io = sh73a0_map_io,
.init_early = sh73a0_add_early_devices,
.nr_irqs = NR_IRQS_LEGACY,
diff --git a/arch/arm/mach-shmobile/board-kota2.c b/arch/arm/mach-shmobile/board-kota2.c
index 21dbe54..bf88f9a 100644
--- a/arch/arm/mach-shmobile/board-kota2.c
+++ b/arch/arm/mach-shmobile/board-kota2.c
@@ -545,6 +545,7 @@ static void __init kota2_init(void)
}
MACHINE_START(KOTA2, "kota2")
+ .smp = smp_ops(sh73a0_smp_ops),
.map_io = sh73a0_map_io,
.init_early = sh73a0_add_early_devices,
.nr_irqs = NR_IRQS_LEGACY,
diff --git a/arch/arm/mach-shmobile/board-kzm9d.c b/arch/arm/mach-shmobile/board-kzm9d.c
index 2c986ea..b52bc0d 100644
--- a/arch/arm/mach-shmobile/board-kzm9d.c
+++ b/arch/arm/mach-shmobile/board-kzm9d.c
@@ -84,6 +84,7 @@ static const char *kzm9d_boards_compat_dt[] __initdata = {
};
DT_MACHINE_START(KZM9D_DT, "kzm9d")
+ .smp = smp_ops(emev2_smp_ops),
.map_io = emev2_map_io,
.init_early = emev2_add_early_devices,
.nr_irqs = NR_IRQS_LEGACY,
diff --git a/arch/arm/mach-shmobile/board-kzm9g.c b/arch/arm/mach-shmobile/board-kzm9g.c
index 53b7ea9..170554e 100644
--- a/arch/arm/mach-shmobile/board-kzm9g.c
+++ b/arch/arm/mach-shmobile/board-kzm9g.c
@@ -769,6 +769,7 @@ static const char *kzm9g_boards_compat_dt[] __initdata = {
};
DT_MACHINE_START(KZM9G_DT, "kzm9g")
+ .smp = smp_ops(sh73a0_smp_ops),
.map_io = sh73a0_map_io,
.init_early = sh73a0_add_early_devices,
.nr_irqs = NR_IRQS_LEGACY,
diff --git a/arch/arm/mach-shmobile/board-marzen.c b/arch/arm/mach-shmobile/board-marzen.c
index 3a528cf..245b4ba 100644
--- a/arch/arm/mach-shmobile/board-marzen.c
+++ b/arch/arm/mach-shmobile/board-marzen.c
@@ -102,6 +102,7 @@ static void __init marzen_init(void)
}
MACHINE_START(MARZEN, "marzen")
+ .smp = smp_ops(r8a7779_smp_ops),
.map_io = r8a7779_map_io,
.init_early = r8a7779_add_early_devices,
.nr_irqs = NR_IRQS_LEGACY,
diff --git a/arch/arm/mach-shmobile/hotplug.c b/arch/arm/mach-shmobile/hotplug.c
index 828d22f..b09a0bd 100644
--- a/arch/arm/mach-shmobile/hotplug.c
+++ b/arch/arm/mach-shmobile/hotplug.c
@@ -14,30 +14,16 @@
#include <linux/smp.h>
#include <linux/cpumask.h>
#include <linux/delay.h>
+#include <linux/of.h>
#include <mach/common.h>
+#include <mach/r8a7779.h>
+#include <mach/emev2.h>
#include <asm/cacheflush.h>
+#include <asm/mach-types.h>
static cpumask_t dead_cpus;
-int platform_cpu_kill(unsigned int cpu)
-{
- int k;
-
- /* this function is running on another CPU than the offline target,
- * here we need wait for shutdown code in platform_cpu_die() to
- * finish before asking SoC-specific code to power off the CPU core.
- */
- for (k = 0; k < 1000; k++) {
- if (cpumask_test_cpu(cpu, &dead_cpus))
- return shmobile_platform_cpu_kill(cpu);
-
- mdelay(1);
- }
-
- return 0;
-}
-
-void platform_cpu_die(unsigned int cpu)
+void shmobile_cpu_die(unsigned int cpu)
{
/* hardware shutdown code running on the CPU that is being offlined */
flush_cache_all();
@@ -60,7 +46,7 @@ void platform_cpu_die(unsigned int cpu)
}
}
-int platform_cpu_disable(unsigned int cpu)
+int shmobile_cpu_disable(unsigned int cpu)
{
cpumask_clear_cpu(cpu, &dead_cpus);
/*
@@ -69,3 +55,8 @@ int platform_cpu_disable(unsigned int cpu)
*/
return cpu == 0 ? -EPERM : 0;
}
+
+int shmobile_cpu_is_dead(unsigned int cpu)
+{
+ return cpumask_test_cpu(cpu, &dead_cpus);
+}
diff --git a/arch/arm/mach-shmobile/include/mach/common.h b/arch/arm/mach-shmobile/include/mach/common.h
index 45e61da..f80f9c5 100644
--- a/arch/arm/mach-shmobile/include/mach/common.h
+++ b/arch/arm/mach-shmobile/include/mach/common.h
@@ -4,11 +4,10 @@
extern void shmobile_earlytimer_init(void);
extern struct sys_timer shmobile_timer;
extern void shmobile_setup_delay(unsigned int max_cpu_core_mhz,
- unsigned int mult, unsigned int div);
+ unsigned int mult, unsigned int div);
struct twd_local_timer;
extern void shmobile_setup_console(void);
extern void shmobile_secondary_vector(void);
-extern int shmobile_platform_cpu_kill(unsigned int cpu);
struct clk;
extern int shmobile_clk_init(void);
extern void shmobile_handle_irq_intc(struct pt_regs *);
@@ -58,11 +57,6 @@ extern struct clk sh73a0_extal2_clk;
extern struct clk sh73a0_extcki_clk;
extern struct clk sh73a0_extalr_clk;
-extern unsigned int sh73a0_get_core_count(void);
-extern void sh73a0_secondary_init(unsigned int cpu);
-extern int sh73a0_boot_secondary(unsigned int cpu);
-extern void sh73a0_smp_prepare_cpus(void);
-
extern void r8a7740_init_irq(void);
extern void r8a7740_map_io(void);
extern void r8a7740_add_early_devices(void);
@@ -79,11 +73,6 @@ extern void r8a7779_pinmux_init(void);
extern void r8a7779_pm_init(void);
extern void r8a7740_meram_workaround(void);
-extern unsigned int r8a7779_get_core_count(void);
-extern int r8a7779_platform_cpu_kill(unsigned int cpu);
-extern void r8a7779_secondary_init(unsigned int cpu);
-extern int r8a7779_boot_secondary(unsigned int cpu);
-extern void r8a7779_smp_prepare_cpus(void);
extern void r8a7779_register_twd(void);
extern void shmobile_init_late(void);
@@ -100,4 +89,15 @@ int shmobile_cpuidle_init(void);
static inline int shmobile_cpuidle_init(void) { return 0; }
#endif
+extern void shmobile_cpu_die(unsigned int cpu);
+extern int shmobile_cpu_disable(unsigned int cpu);
+
+#ifdef CONFIG_HOTPLUG_CPU
+extern int shmobile_cpu_is_dead(unsigned int cpu);
+#else
+static inline int shmobile_cpu_is_dead(unsigned int cpu) { return 1; }
+#endif
+
+extern void shmobile_smp_init_cpus(unsigned int ncores);
+
#endif /* __ARCH_MACH_COMMON_H */
diff --git a/arch/arm/mach-shmobile/include/mach/emev2.h b/arch/arm/mach-shmobile/include/mach/emev2.h
index e6b0c1b..ac37517 100644
--- a/arch/arm/mach-shmobile/include/mach/emev2.h
+++ b/arch/arm/mach-shmobile/include/mach/emev2.h
@@ -7,13 +7,10 @@ extern void emev2_add_early_devices(void);
extern void emev2_add_standard_devices(void);
extern void emev2_clock_init(void);
extern void emev2_set_boot_vector(unsigned long value);
-extern unsigned int emev2_get_core_count(void);
-extern int emev2_platform_cpu_kill(unsigned int cpu);
-extern void emev2_secondary_init(unsigned int cpu);
-extern int emev2_boot_secondary(unsigned int cpu);
-extern void emev2_smp_prepare_cpus(void);
#define EMEV2_GPIO_BASE 200
#define EMEV2_GPIO_IRQ(n) (EMEV2_GPIO_BASE + (n))
+extern struct smp_operations emev2_smp_ops;
+
#endif /* __ASM_EMEV2_H__ */
diff --git a/arch/arm/mach-shmobile/include/mach/r8a7779.h b/arch/arm/mach-shmobile/include/mach/r8a7779.h
index b07ad31..f504c5e 100644
--- a/arch/arm/mach-shmobile/include/mach/r8a7779.h
+++ b/arch/arm/mach-shmobile/include/mach/r8a7779.h
@@ -360,4 +360,6 @@ extern void r8a7779_add_device_to_domain(struct r8a7779_pm_domain *r8a7779_pd,
#define r8a7779_add_device_to_domain(pd, pdev) do { } while (0)
#endif /* CONFIG_PM */
+extern struct smp_operations r8a7779_smp_ops;
+
#endif /* __ASM_R8A7779_H__ */
diff --git a/arch/arm/mach-shmobile/include/mach/sh73a0.h b/arch/arm/mach-shmobile/include/mach/sh73a0.h
index fe950f2..606d31d 100644
--- a/arch/arm/mach-shmobile/include/mach/sh73a0.h
+++ b/arch/arm/mach-shmobile/include/mach/sh73a0.h
@@ -557,4 +557,6 @@ enum {
#define SH73A0_PINT0_IRQ(irq) ((irq) + 700)
#define SH73A0_PINT1_IRQ(irq) ((irq) + 732)
+extern struct smp_operations sh73a0_smp_ops;
+
#endif /* __ASM_SH73A0_H__ */
diff --git a/arch/arm/mach-shmobile/platsmp.c b/arch/arm/mach-shmobile/platsmp.c
index fde0d23..ed8d235 100644
--- a/arch/arm/mach-shmobile/platsmp.c
+++ b/arch/arm/mach-shmobile/platsmp.c
@@ -11,100 +11,11 @@
* published by the Free Software Foundation.
*/
#include <linux/init.h>
-#include <linux/errno.h>
-#include <linux/delay.h>
-#include <linux/device.h>
#include <linux/smp.h>
-#include <linux/io.h>
-#include <linux/of.h>
#include <asm/hardware/gic.h>
-#include <asm/mach-types.h>
-#include <mach/common.h>
-#include <mach/emev2.h>
-#ifdef CONFIG_ARCH_SH73A0
-#define is_sh73a0() (machine_is_ag5evm() || machine_is_kota2() || \
- of_machine_is_compatible("renesas,sh73a0"))
-#else
-#define is_sh73a0() (0)
-#endif
-
-#define is_r8a7779() machine_is_marzen()
-
-#ifdef CONFIG_ARCH_EMEV2
-#define is_emev2() of_machine_is_compatible("renesas,emev2")
-#else
-#define is_emev2() (0)
-#endif
-
-static unsigned int __init shmobile_smp_get_core_count(void)
-{
- if (is_sh73a0())
- return sh73a0_get_core_count();
-
- if (is_r8a7779())
- return r8a7779_get_core_count();
-
- if (is_emev2())
- return emev2_get_core_count();
-
- return 1;
-}
-
-static void __init shmobile_smp_prepare_cpus(void)
-{
- if (is_sh73a0())
- sh73a0_smp_prepare_cpus();
-
- if (is_r8a7779())
- r8a7779_smp_prepare_cpus();
-
- if (is_emev2())
- emev2_smp_prepare_cpus();
-}
-
-int shmobile_platform_cpu_kill(unsigned int cpu)
-{
- if (is_r8a7779())
- return r8a7779_platform_cpu_kill(cpu);
-
- if (is_emev2())
- return emev2_platform_cpu_kill(cpu);
-
- return 1;
-}
-
-void __cpuinit platform_secondary_init(unsigned int cpu)
+void __init shmobile_smp_init_cpus(unsigned int ncores)
{
- trace_hardirqs_off();
-
- if (is_sh73a0())
- sh73a0_secondary_init(cpu);
-
- if (is_r8a7779())
- r8a7779_secondary_init(cpu);
-
- if (is_emev2())
- emev2_secondary_init(cpu);
-}
-
-int __cpuinit boot_secondary(unsigned int cpu, struct task_struct *idle)
-{
- if (is_sh73a0())
- return sh73a0_boot_secondary(cpu);
-
- if (is_r8a7779())
- return r8a7779_boot_secondary(cpu);
-
- if (is_emev2())
- return emev2_boot_secondary(cpu);
-
- return -ENOSYS;
-}
-
-void __init smp_init_cpus(void)
-{
- unsigned int ncores = shmobile_smp_get_core_count();
unsigned int i;
if (ncores > nr_cpu_ids) {
@@ -118,8 +29,3 @@ void __init smp_init_cpus(void)
set_smp_cross_call(gic_raise_softirq);
}
-
-void __init platform_smp_prepare_cpus(unsigned int max_cpus)
-{
- shmobile_smp_prepare_cpus();
-}
diff --git a/arch/arm/mach-shmobile/setup-emev2.c b/arch/arm/mach-shmobile/setup-emev2.c
index dae9aa6..5b46651 100644
--- a/arch/arm/mach-shmobile/setup-emev2.c
+++ b/arch/arm/mach-shmobile/setup-emev2.c
@@ -440,6 +440,7 @@ void __init emev2_init_irq_dt(void)
}
DT_MACHINE_START(EMEV2_DT, "Generic Emma Mobile EV2 (Flattened Device Tree)")
+ .smp = smp_ops(emev2_smp_ops),
.init_early = emev2_init_delay,
.nr_irqs = NR_IRQS_LEGACY,
.init_irq = emev2_init_irq_dt,
diff --git a/arch/arm/mach-shmobile/smp-emev2.c b/arch/arm/mach-shmobile/smp-emev2.c
index 6a35c4a..f978c5d 100644
--- a/arch/arm/mach-shmobile/smp-emev2.c
+++ b/arch/arm/mach-shmobile/smp-emev2.c
@@ -50,7 +50,7 @@ static void modify_scu_cpu_psr(unsigned long set, unsigned long clr)
}
-unsigned int __init emev2_get_core_count(void)
+static unsigned int __init emev2_get_core_count(void)
{
if (!scu_base) {
scu_base = ioremap(EMEV2_SCU_BASE, PAGE_SIZE);
@@ -62,17 +62,35 @@ unsigned int __init emev2_get_core_count(void)
return scu_base ? scu_get_core_count(scu_base) : 1;
}
-int emev2_platform_cpu_kill(unsigned int cpu)
+static int emev2_platform_cpu_kill(unsigned int cpu)
{
return 0; /* not supported yet */
}
-void __cpuinit emev2_secondary_init(unsigned int cpu)
+static int __maybe_unused emev2_cpu_kill(unsigned int cpu)
+{
+ int k;
+
+ /* this function is running on another CPU than the offline target,
+ * here we need wait for shutdown code in platform_cpu_die() to
+ * finish before asking SoC-specific code to power off the CPU core.
+ */
+ for (k = 0; k < 1000; k++) {
+ if (shmobile_cpu_is_dead(cpu))
+ return emev2_platform_cpu_kill(cpu);
+ mdelay(1);
+ }
+
+ return 0;
+}
+
+
+static void __cpuinit emev2_secondary_init(unsigned int cpu)
{
gic_secondary_init(0);
}
-int __cpuinit emev2_boot_secondary(unsigned int cpu)
+static int __cpuinit emev2_boot_secondary(unsigned int cpu, struct task_struct *idle)
{
cpu = cpu_logical_map(cpu);
@@ -86,7 +104,7 @@ int __cpuinit emev2_boot_secondary(unsigned int cpu)
return 0;
}
-void __init emev2_smp_prepare_cpus(void)
+static void __init emev2_smp_prepare_cpus(unsigned int max_cpus)
{
int cpu = cpu_logical_map(0);
@@ -95,3 +113,22 @@ void __init emev2_smp_prepare_cpus(void)
/* enable cache coherency on CPU0 */
modify_scu_cpu_psr(0, 3 << (cpu * 8));
}
+
+static void __init emev2_smp_init_cpus(void)
+{
+ unsigned int ncores = emev2_get_core_count();
+
+ shmobile_smp_init_cpus(ncores);
+}
+
+struct smp_operations emev2_smp_ops __initdata = {
+ .smp_init_cpus = emev2_smp_init_cpus,
+ .smp_prepare_cpus = emev2_smp_prepare_cpus,
+ .smp_secondary_init = emev2_secondary_init,
+ .smp_boot_secondary = emev2_boot_secondary,
+#ifdef CONFIG_HOTPLUG_CPU
+ .cpu_kill = emev2_cpu_kill,
+ .cpu_die = shmobile_cpu_die,
+ .cpu_disable = shmobile_cpu_disable,
+#endif
+};
diff --git a/arch/arm/mach-shmobile/smp-r8a7779.c b/arch/arm/mach-shmobile/smp-r8a7779.c
index 6d1d023..2ce6af9 100644
--- a/arch/arm/mach-shmobile/smp-r8a7779.c
+++ b/arch/arm/mach-shmobile/smp-r8a7779.c
@@ -87,14 +87,14 @@ static void modify_scu_cpu_psr(unsigned long set, unsigned long clr)
__raw_writel(tmp, scu_base + 8);
}
-unsigned int __init r8a7779_get_core_count(void)
+static unsigned int __init r8a7779_get_core_count(void)
{
void __iomem *scu_base = scu_base_addr();
return scu_get_core_count(scu_base);
}
-int r8a7779_platform_cpu_kill(unsigned int cpu)
+static int r8a7779_platform_cpu_kill(unsigned int cpu)
{
struct r8a7779_pm_ch *ch = NULL;
int ret = -EIO;
@@ -113,12 +113,31 @@ int r8a7779_platform_cpu_kill(unsigned int cpu)
return ret ? ret : 1;
}
-void __cpuinit r8a7779_secondary_init(unsigned int cpu)
+static int __maybe_unused r8a7779_cpu_kill(unsigned int cpu)
+{
+ int k;
+
+ /* this function is running on another CPU than the offline target,
+ * here we need wait for shutdown code in platform_cpu_die() to
+ * finish before asking SoC-specific code to power off the CPU core.
+ */
+ for (k = 0; k < 1000; k++) {
+ if (shmobile_cpu_is_dead(cpu))
+ return r8a7779_platform_cpu_kill(cpu);
+
+ mdelay(1);
+ }
+
+ return 0;
+}
+
+
+static void __cpuinit r8a7779_secondary_init(unsigned int cpu)
{
gic_secondary_init(0);
}
-int __cpuinit r8a7779_boot_secondary(unsigned int cpu)
+static int __cpuinit r8a7779_boot_secondary(unsigned int cpu, struct task_struct *idle)
{
struct r8a7779_pm_ch *ch = NULL;
int ret = -EIO;
@@ -137,7 +156,7 @@ int __cpuinit r8a7779_boot_secondary(unsigned int cpu)
return ret;
}
-void __init r8a7779_smp_prepare_cpus(void)
+static void __init r8a7779_smp_prepare_cpus(unsigned int max_cpus)
{
int cpu = cpu_logical_map(0);
@@ -156,3 +175,22 @@ void __init r8a7779_smp_prepare_cpus(void)
r8a7779_platform_cpu_kill(2);
r8a7779_platform_cpu_kill(3);
}
+
+static void __init r8a7779_smp_init_cpus(void)
+{
+ unsigned int ncores = r8a7779_get_core_count();
+
+ shmobile_smp_init_cpus(ncores);
+}
+
+struct smp_operations r8a7779_smp_ops __initdata = {
+ .smp_init_cpus = r8a7779_smp_init_cpus,
+ .smp_prepare_cpus = r8a7779_smp_prepare_cpus,
+ .smp_secondary_init = r8a7779_secondary_init,
+ .smp_boot_secondary = r8a7779_boot_secondary,
+#ifdef CONFIG_HOTPLUG_CPU
+ .cpu_kill = r8a7779_cpu_kill,
+ .cpu_die = shmobile_cpu_die,
+ .cpu_disable = shmobile_cpu_disable,
+#endif
+};
diff --git a/arch/arm/mach-shmobile/smp-sh73a0.c b/arch/arm/mach-shmobile/smp-sh73a0.c
index e36c41c..624f00f 100644
--- a/arch/arm/mach-shmobile/smp-sh73a0.c
+++ b/arch/arm/mach-shmobile/smp-sh73a0.c
@@ -22,8 +22,10 @@
#include <linux/smp.h>
#include <linux/spinlock.h>
#include <linux/io.h>
+#include <linux/delay.h>
#include <mach/common.h>
#include <asm/smp_plat.h>
+#include <mach/sh73a0.h>
#include <asm/smp_scu.h>
#include <asm/smp_twd.h>
#include <asm/hardware/gic.h>
@@ -64,19 +66,19 @@ static void modify_scu_cpu_psr(unsigned long set, unsigned long clr)
__raw_writel(tmp, scu_base + 8);
}
-unsigned int __init sh73a0_get_core_count(void)
+static unsigned int __init sh73a0_get_core_count(void)
{
void __iomem *scu_base = scu_base_addr();
return scu_get_core_count(scu_base);
}
-void __cpuinit sh73a0_secondary_init(unsigned int cpu)
+static void __cpuinit sh73a0_secondary_init(unsigned int cpu)
{
gic_secondary_init(0);
}
-int __cpuinit sh73a0_boot_secondary(unsigned int cpu)
+static int __cpuinit sh73a0_boot_secondary(unsigned int cpu, struct task_struct *idle)
{
cpu = cpu_logical_map(cpu);
@@ -91,7 +93,7 @@ int __cpuinit sh73a0_boot_secondary(unsigned int cpu)
return 0;
}
-void __init sh73a0_smp_prepare_cpus(void)
+static void __init sh73a0_smp_prepare_cpus(unsigned int max_cpus)
{
int cpu = cpu_logical_map(0);
@@ -104,3 +106,41 @@ void __init sh73a0_smp_prepare_cpus(void)
/* enable cache coherency on CPU0 */
modify_scu_cpu_psr(0, 3 << (cpu * 8));
}
+
+static void __init sh73a0_smp_init_cpus(void)
+{
+ unsigned int ncores = sh73a0_get_core_count();
+
+ shmobile_smp_init_cpus(ncores);
+}
+
+static int __maybe_unused sh73a0_cpu_kill(unsigned int cpu)
+{
+ int k;
+
+ /* this function is running on another CPU than the offline target,
+ * here we need wait for shutdown code in platform_cpu_die() to
+ * finish before asking SoC-specific code to power off the CPU core.
+ */
+ for (k = 0; k < 1000; k++) {
+ if (shmobile_cpu_is_dead(cpu))
+ return 1;
+
+ mdelay(1);
+ }
+
+ return 0;
+}
+
+
+struct smp_operations sh73a0_smp_ops __initdata = {
+ .smp_init_cpus = sh73a0_smp_init_cpus,
+ .smp_prepare_cpus = sh73a0_smp_prepare_cpus,
+ .smp_secondary_init = sh73a0_secondary_init,
+ .smp_boot_secondary = sh73a0_boot_secondary,
+#ifdef CONFIG_HOTPLUG_CPU
+ .cpu_kill = sh73a0_cpu_kill,
+ .cpu_die = shmobile_cpu_die,
+ .cpu_disable = shmobile_cpu_disable,
+#endif
+};
--
1.7.10
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