diff options
Diffstat (limited to 'arch/arm/common')
| -rw-r--r-- | arch/arm/common/mcpm_entry.c | 21 | ||||
| -rw-r--r-- | arch/arm/common/mcpm_platsmp.c | 27 | ||||
| -rw-r--r-- | arch/arm/common/sharpsl_param.c | 5 | ||||
| -rw-r--r-- | arch/arm/common/timer-sp.c | 2 |
4 files changed, 47 insertions, 8 deletions
diff --git a/arch/arm/common/mcpm_entry.c b/arch/arm/common/mcpm_entry.c index 4a2b32fd53a1..26020a03f659 100644 --- a/arch/arm/common/mcpm_entry.c +++ b/arch/arm/common/mcpm_entry.c @@ -63,7 +63,8 @@ void mcpm_cpu_power_down(void) { phys_reset_t phys_reset; - BUG_ON(!platform_ops); + if (WARN_ON_ONCE(!platform_ops || !platform_ops->power_down)) + return; BUG_ON(!irqs_disabled()); /* @@ -101,11 +102,27 @@ void mcpm_cpu_power_down(void) BUG(); } +int mcpm_cpu_power_down_finish(unsigned int cpu, unsigned int cluster) +{ + int ret; + + if (WARN_ON_ONCE(!platform_ops || !platform_ops->power_down_finish)) + return -EUNATCH; + + ret = platform_ops->power_down_finish(cpu, cluster); + if (ret) + pr_warn("%s: cpu %u, cluster %u failed to power down (%d)\n", + __func__, cpu, cluster, ret); + + return ret; +} + void mcpm_cpu_suspend(u64 expected_residency) { phys_reset_t phys_reset; - BUG_ON(!platform_ops); + if (WARN_ON_ONCE(!platform_ops || !platform_ops->suspend)) + return; BUG_ON(!irqs_disabled()); /* Very similar to mcpm_cpu_power_down() */ diff --git a/arch/arm/common/mcpm_platsmp.c b/arch/arm/common/mcpm_platsmp.c index 1bc34c7567fd..177251a4dd9a 100644 --- a/arch/arm/common/mcpm_platsmp.c +++ b/arch/arm/common/mcpm_platsmp.c @@ -19,14 +19,23 @@ #include <asm/smp.h> #include <asm/smp_plat.h> +static void cpu_to_pcpu(unsigned int cpu, + unsigned int *pcpu, unsigned int *pcluster) +{ + unsigned int mpidr; + + mpidr = cpu_logical_map(cpu); + *pcpu = MPIDR_AFFINITY_LEVEL(mpidr, 0); + *pcluster = MPIDR_AFFINITY_LEVEL(mpidr, 1); +} + static int mcpm_boot_secondary(unsigned int cpu, struct task_struct *idle) { - unsigned int mpidr, pcpu, pcluster, ret; + unsigned int pcpu, pcluster, ret; extern void secondary_startup(void); - mpidr = cpu_logical_map(cpu); - pcpu = MPIDR_AFFINITY_LEVEL(mpidr, 0); - pcluster = MPIDR_AFFINITY_LEVEL(mpidr, 1); + cpu_to_pcpu(cpu, &pcpu, &pcluster); + pr_debug("%s: logical CPU %d is physical CPU %d cluster %d\n", __func__, cpu, pcpu, pcluster); @@ -47,6 +56,15 @@ static void mcpm_secondary_init(unsigned int cpu) #ifdef CONFIG_HOTPLUG_CPU +static int mcpm_cpu_kill(unsigned int cpu) +{ + unsigned int pcpu, pcluster; + + cpu_to_pcpu(cpu, &pcpu, &pcluster); + + return !mcpm_cpu_power_down_finish(pcpu, pcluster); +} + static int mcpm_cpu_disable(unsigned int cpu) { /* @@ -73,6 +91,7 @@ static struct smp_operations __initdata mcpm_smp_ops = { .smp_boot_secondary = mcpm_boot_secondary, .smp_secondary_init = mcpm_secondary_init, #ifdef CONFIG_HOTPLUG_CPU + .cpu_kill = mcpm_cpu_kill, .cpu_disable = mcpm_cpu_disable, .cpu_die = mcpm_cpu_die, #endif diff --git a/arch/arm/common/sharpsl_param.c b/arch/arm/common/sharpsl_param.c index d56c932580eb..025f6ce38596 100644 --- a/arch/arm/common/sharpsl_param.c +++ b/arch/arm/common/sharpsl_param.c @@ -15,6 +15,7 @@ #include <linux/module.h> #include <linux/string.h> #include <asm/mach/sharpsl_param.h> +#include <asm/memory.h> /* * Certain hardware parameters determined at the time of device manufacture, @@ -25,8 +26,10 @@ */ #ifdef CONFIG_ARCH_SA1100 #define PARAM_BASE 0xe8ffc000 +#define param_start(x) (void *)(x) #else #define PARAM_BASE 0xa0000a00 +#define param_start(x) __va(x) #endif #define MAGIC_CHG(a,b,c,d) ( ( d << 24 ) | ( c << 16 ) | ( b << 8 ) | a ) @@ -41,7 +44,7 @@ EXPORT_SYMBOL(sharpsl_param); void sharpsl_save_param(void) { - memcpy(&sharpsl_param, (void *)PARAM_BASE, sizeof(struct sharpsl_param_info)); + memcpy(&sharpsl_param, param_start(PARAM_BASE), sizeof(struct sharpsl_param_info)); if (sharpsl_param.comadj_keyword != COMADJ_MAGIC) sharpsl_param.comadj=-1; diff --git a/arch/arm/common/timer-sp.c b/arch/arm/common/timer-sp.c index e901d0f3e0bb..ce922d0ea7aa 100644 --- a/arch/arm/common/timer-sp.c +++ b/arch/arm/common/timer-sp.c @@ -175,7 +175,7 @@ static struct clock_event_device sp804_clockevent = { static struct irqaction sp804_timer_irq = { .name = "timer", - .flags = IRQF_DISABLED | IRQF_TIMER | IRQF_IRQPOLL, + .flags = IRQF_TIMER | IRQF_IRQPOLL, .handler = sp804_timer_interrupt, .dev_id = &sp804_clockevent, }; |