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Subject[PATCH v9 06/13] ARM: SoC: convert MSM SMP to SoC descriptor
Date
From: Marc Zyngier <marc.zyngier@arm.com>

Convert MSM SMP platforms to use the SoC descriptor to provide
their SMP and CPU hotplug operations.

Cc: David Brown <davidb@codeaurora.org>
Signed-off-by: Marc Zyngier <marc.zyngier@arm.com>
Signed-off-by: Arnd Bergmann <arnd@arndb.de>
---
arch/arm/mach-msm/board-msm8960.c | 3 +++
arch/arm/mach-msm/board-msm8x60.c | 7 +++++++
arch/arm/mach-msm/core.h | 2 ++
arch/arm/mach-msm/hotplug.c | 18 +++---------------
arch/arm/mach-msm/platsmp.c | 19 +++++++++++++++----
5 files changed, 30 insertions(+), 19 deletions(-)
create mode 100644 arch/arm/mach-msm/core.h

diff --git a/arch/arm/mach-msm/board-msm8960.c b/arch/arm/mach-msm/board-msm8960.c
index 65f4a1d..a156968 100644
--- a/arch/arm/mach-msm/board-msm8960.c
+++ b/arch/arm/mach-msm/board-msm8960.c
@@ -30,6 +30,7 @@
#include <mach/board.h>
#include <mach/msm_iomap.h>

+#include "core.h"
#include "devices.h"

static void __init msm8960_fixup(struct tag *tag, char **cmdline,
@@ -99,6 +100,7 @@ static void __init msm8960_init_late(void)
}

MACHINE_START(MSM8960_SIM, "QCT MSM8960 SIMULATOR")
+ .smp = smp_ops(msm_smp_ops),
.fixup = msm8960_fixup,
.reserve = msm8960_reserve,
.map_io = msm8960_map_io,
@@ -110,6 +112,7 @@ MACHINE_START(MSM8960_SIM, "QCT MSM8960 SIMULATOR")
MACHINE_END

MACHINE_START(MSM8960_RUMI3, "QCT MSM8960 RUMI3")
+ .smp = smp_ops(msm_smp_ops),
.fixup = msm8960_fixup,
.reserve = msm8960_reserve,
.map_io = msm8960_map_io,
diff --git a/arch/arm/mach-msm/board-msm8x60.c b/arch/arm/mach-msm/board-msm8x60.c
index e37a724..dc2abd3 100644
--- a/arch/arm/mach-msm/board-msm8x60.c
+++ b/arch/arm/mach-msm/board-msm8x60.c
@@ -29,6 +29,8 @@
#include <mach/board.h>
#include <mach/msm_iomap.h>

+#include "core.h"
+
static void __init msm8x60_fixup(struct tag *tag, char **cmdline,
struct meminfo *mi)
{
@@ -110,6 +112,7 @@ static const char *msm8x60_fluid_match[] __initdata = {
#endif /* CONFIG_OF */

MACHINE_START(MSM8X60_RUMI3, "QCT MSM8X60 RUMI3")
+ .smp = smp_ops(msm_smp_ops),
.fixup = msm8x60_fixup,
.reserve = msm8x60_reserve,
.map_io = msm8x60_map_io,
@@ -121,6 +124,7 @@ MACHINE_START(MSM8X60_RUMI3, "QCT MSM8X60 RUMI3")
MACHINE_END

MACHINE_START(MSM8X60_SURF, "QCT MSM8X60 SURF")
+ .smp = smp_ops(msm_smp_ops),
.fixup = msm8x60_fixup,
.reserve = msm8x60_reserve,
.map_io = msm8x60_map_io,
@@ -132,6 +136,7 @@ MACHINE_START(MSM8X60_SURF, "QCT MSM8X60 SURF")
MACHINE_END

MACHINE_START(MSM8X60_SIM, "QCT MSM8X60 SIMULATOR")
+ .smp = smp_ops(msm_smp_ops),
.fixup = msm8x60_fixup,
.reserve = msm8x60_reserve,
.map_io = msm8x60_map_io,
@@ -143,6 +148,7 @@ MACHINE_START(MSM8X60_SIM, "QCT MSM8X60 SIMULATOR")
MACHINE_END

MACHINE_START(MSM8X60_FFA, "QCT MSM8X60 FFA")
+ .smp = smp_ops(msm_smp_ops),
.fixup = msm8x60_fixup,
.reserve = msm8x60_reserve,
.map_io = msm8x60_map_io,
@@ -156,6 +162,7 @@ MACHINE_END
#ifdef CONFIG_OF
/* TODO: General device tree support for all MSM. */
DT_MACHINE_START(MSM_DT, "Qualcomm MSM (Flattened Device Tree)")
+ .smp = smp_ops(msm_smp_ops),
.map_io = msm8x60_map_io,
.init_irq = msm8x60_init_irq,
.init_machine = msm8x60_dt_init,
diff --git a/arch/arm/mach-msm/core.h b/arch/arm/mach-msm/core.h
new file mode 100644
index 0000000..a9bab53
--- /dev/null
+++ b/arch/arm/mach-msm/core.h
@@ -0,0 +1,2 @@
+extern struct smp_operations msm_smp_ops;
+extern void msm_cpu_die(unsigned int cpu);
diff --git a/arch/arm/mach-msm/hotplug.c b/arch/arm/mach-msm/hotplug.c
index a446fc1..d0f79e8 100644
--- a/arch/arm/mach-msm/hotplug.c
+++ b/arch/arm/mach-msm/hotplug.c
@@ -13,6 +13,8 @@
#include <asm/cacheflush.h>
#include <asm/smp_plat.h>

+#include "core.h"
+
extern volatile int pen_release;

static inline void cpu_enter_lowpower(void)
@@ -57,17 +59,12 @@ static inline void platform_do_lowpower(unsigned int cpu)
}
}

-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 msm_cpu_die(unsigned int cpu)
{
/*
* we're ready for shutdown now, so do it
@@ -81,12 +78,3 @@ void platform_cpu_die(unsigned int cpu)
*/
cpu_leave_lowpower();
}
-
-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-msm/platsmp.c b/arch/arm/mach-msm/platsmp.c
index e012dc8..ba3c4b0 100644
--- a/arch/arm/mach-msm/platsmp.c
+++ b/arch/arm/mach-msm/platsmp.c
@@ -25,6 +25,7 @@
#include <mach/msm_iomap.h>

#include "scm-boot.h"
+#include "core.h"

#define VDD_SC1_ARRAY_CLAMP_GFS_CTL 0x15A0
#define SCSS_CPU1CORE_RESET 0xD80
@@ -48,7 +49,7 @@ static inline int get_core_count(void)
return ((read_cpuid_id() >> 4) & 3) + 1;
}

-void __cpuinit platform_secondary_init(unsigned int cpu)
+static void __cpuinit msm_secondary_init(unsigned int cpu)
{
/* Configure edge-triggered PPIs */
writel(GIC_PPI_EDGE_MASK, MSM_QGIC_DIST_BASE + GIC_DIST_CONFIG + 4);
@@ -93,7 +94,7 @@ static __cpuinit void prepare_cold_cpu(unsigned int cpu)
"address\n");
}

-int __cpuinit boot_secondary(unsigned int cpu, struct task_struct *idle)
+static int __cpuinit msm_boot_secondary(unsigned int cpu, struct task_struct *idle)
{
unsigned long timeout;
static int cold_boot_done;
@@ -153,7 +154,7 @@ int __cpuinit boot_secondary(unsigned int cpu, struct task_struct *idle)
* does not support the ARM SCU, so just set the possible cpu mask to
* NR_CPUS.
*/
-void __init smp_init_cpus(void)
+static void __init msm_smp_init_cpus(void)
{
unsigned int i, ncores = get_core_count();

@@ -169,6 +170,16 @@ 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 msm_smp_prepare_cpus(unsigned int max_cpus)
{
}
+
+struct smp_operations msm_smp_ops __initdata = {
+ .smp_init_cpus = msm_smp_init_cpus,
+ .smp_prepare_cpus = msm_smp_prepare_cpus,
+ .smp_secondary_init = msm_secondary_init,
+ .smp_boot_secondary = msm_boot_secondary,
+#ifdef CONFIG_HOTPLUG_CPU
+ .cpu_die = msm_cpu_die,
+#endif
+};
--
1.7.10


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