[PATCH v6 10/15] ARM: SoC: convert highbank to SoC descriptor
From: Marc Zyngier <hidden>
Date: 2012-02-08 00:30:54
Subsystem:
arm port, arm/calxeda highbank architecture, the rest · Maintainers:
Russell King, Andre Przywara, Linus Torvalds
Convert the highbank platform to use the SoC descriptor to provide its SMP and CPU hotplug operations. Cc: Rob Herring <redacted> Signed-off-by: Marc Zyngier <redacted> --- arch/arm/mach-highbank/core.h | 8 ++++++++ arch/arm/mach-highbank/highbank.c | 7 +++++++ arch/arm/mach-highbank/hotplug.c | 6 +++--- arch/arm/mach-highbank/platsmp.c | 23 +++++++++++++++++++---- 4 files changed, 37 insertions(+), 7 deletions(-)
diff --git a/arch/arm/mach-highbank/core.h b/arch/arm/mach-highbank/core.h
index d8e2d0b..d1fd356 100644
--- a/arch/arm/mach-highbank/core.h
+++ b/arch/arm/mach-highbank/core.h@@ -1,3 +1,5 @@ +#include <asm/soc.h> + extern void highbank_set_cpu_jump(int cpu, void *jump_addr); extern void highbank_clocks_init(void); extern void highbank_restart(char, const char *);
@@ -8,3 +10,9 @@ extern void highbank_lluart_map_io(void); static inline void highbank_lluart_map_io(void) {} #endif +extern int highbank_cpu_kill(unsigned int cpu); +extern void highbank_cpu_die(unsigned int cpu); +extern int highbank_cpu_disable(unsigned int cpu); + +extern struct arm_soc_smp_init_ops highbank_soc_smp_init_ops; +extern struct arm_soc_smp_ops highbank_soc_smp_ops;
diff --git a/arch/arm/mach-highbank/highbank.c b/arch/arm/mach-highbank/highbank.c
index 8394d51..1a6a704 100644
--- a/arch/arm/mach-highbank/highbank.c
+++ b/arch/arm/mach-highbank/highbank.c@@ -138,7 +138,14 @@ static const char *highbank_match[] __initconst = { NULL, }; +static struct arm_soc_desc highbank_soc_desc __initdata = { + .name = "Calxeda Highbank", + soc_smp_init_ops(highbank_soc_smp_init_ops) + soc_smp_ops(highbank_soc_smp_ops) +}; + DT_MACHINE_START(HIGHBANK, "Highbank") + .soc = &highbank_soc_desc, .map_io = highbank_map_io, .init_irq = highbank_init_irq, .timer = &highbank_timer,
diff --git a/arch/arm/mach-highbank/hotplug.c b/arch/arm/mach-highbank/hotplug.c
index 977cebb..7c25d49 100644
--- a/arch/arm/mach-highbank/hotplug.c
+++ b/arch/arm/mach-highbank/hotplug.c@@ -24,7 +24,7 @@ extern void secondary_startup(void); -int platform_cpu_kill(unsigned int cpu) +int highbank_cpu_kill(unsigned int cpu) { return 1; }
@@ -33,7 +33,7 @@ int platform_cpu_kill(unsigned int cpu) * platform-specific code to shutdown a CPU * */ -void platform_cpu_die(unsigned int cpu) +void highbank_cpu_die(unsigned int cpu) { flush_cache_all();
@@ -46,7 +46,7 @@ void platform_cpu_die(unsigned int cpu) panic("highbank: cpu %d unexpectedly exit from shutdown\n", cpu); } -int platform_cpu_disable(unsigned int cpu) +int highbank_cpu_disable(unsigned int cpu) { /* * CPU0 should not be shut down via hotplug. cpu_idle can WFI
diff --git a/arch/arm/mach-highbank/platsmp.c b/arch/arm/mach-highbank/platsmp.c
index d01364c..24162a7 100644
--- a/arch/arm/mach-highbank/platsmp.c
+++ b/arch/arm/mach-highbank/platsmp.c@@ -25,12 +25,12 @@ extern void secondary_startup(void); -void __cpuinit platform_secondary_init(unsigned int cpu) +static void __cpuinit highbank_secondary_init(unsigned int cpu) { gic_secondary_init(0); } -int __cpuinit boot_secondary(unsigned int cpu, struct task_struct *idle) +static int __cpuinit highbank_boot_secondary(unsigned int cpu, struct task_struct *idle) { gic_raise_softirq(cpumask_of(cpu), 0); return 0;
@@ -40,7 +40,7 @@ int __cpuinit boot_secondary(unsigned int cpu, struct task_struct *idle) * 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 highbank_smp_init_cpus(void) { unsigned int i, ncores;
@@ -61,7 +61,7 @@ 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 highbank_smp_prepare_cpus(unsigned int max_cpus) { int i;
@@ -76,3 +76,18 @@ void __init platform_smp_prepare_cpus(unsigned int max_cpus) for (i = 1; i < max_cpus; i++) highbank_set_cpu_jump(i, secondary_startup); } + +struct arm_soc_smp_init_ops highbank_soc_smp_init_ops __initdata = { + .smp_init_cpus = highbank_smp_init_cpus, + .smp_prepare_cpus = highbank_smp_prepare_cpus, +}; + +struct arm_soc_smp_ops highbank_soc_smp_ops __initdata = { + .smp_secondary_init = highbank_secondary_init, + .smp_boot_secondary = highbank_boot_secondary, +#ifdef CONFIG_HOTPLUG_CPU + .cpu_kill = highbank_cpu_kill, + .cpu_die = highbank_cpu_die, + .cpu_disable = highbank_cpu_disable, +#endif +};
--
1.7.3.4