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| author | Russell King <rmk+kernel@arm.linux.org.uk> | 2012-11-20 20:18:51 +0000 |
|---|---|---|
| committer | Russell King <rmk+kernel@arm.linux.org.uk> | 2012-11-20 20:18:51 +0000 |
| commit | e38eb34aab13a81b91400c75c703252473100bc4 (patch) | |
| tree | a250c6071dba9bb1cdb2cff143b33906230e6439 /arch/arm/include | |
| parent | 2079f30e9e83887ca95fa129d0bc734b2c4b406d (diff) | |
| parent | 384a290283fde63ba8dc671fca5420111cdac19a (diff) | |
Merge branch 'cluster-boot-protocol' of git://linux-arm.org/linux-2.6-lp into devel-stable
Diffstat (limited to 'arch/arm/include')
| -rw-r--r-- | arch/arm/include/asm/cputype.h | 13 | ||||
| -rw-r--r-- | arch/arm/include/asm/prom.h | 2 | ||||
| -rw-r--r-- | arch/arm/include/asm/smp_plat.h | 17 |
3 files changed, 32 insertions, 0 deletions
diff --git a/arch/arm/include/asm/cputype.h b/arch/arm/include/asm/cputype.h index cb47d28cbe1..a59dcb5ab5f 100644 --- a/arch/arm/include/asm/cputype.h +++ b/arch/arm/include/asm/cputype.h @@ -25,6 +25,19 @@ #define CPUID_EXT_ISAR4 "c2, 4" #define CPUID_EXT_ISAR5 "c2, 5" +#define MPIDR_SMP_BITMASK (0x3 << 30) +#define MPIDR_SMP_VALUE (0x2 << 30) + +#define MPIDR_MT_BITMASK (0x1 << 24) + +#define MPIDR_HWID_BITMASK 0xFFFFFF + +#define MPIDR_LEVEL_BITS 8 +#define MPIDR_LEVEL_MASK ((1 << MPIDR_LEVEL_BITS) - 1) + +#define MPIDR_AFFINITY_LEVEL(mpidr, level) \ + ((mpidr >> (MPIDR_LEVEL_BITS * level)) & MPIDR_LEVEL_MASK) + extern unsigned int processor_id; #ifdef CONFIG_CPU_CP15 diff --git a/arch/arm/include/asm/prom.h b/arch/arm/include/asm/prom.h index aeae9c609df..8dd51dc1a36 100644 --- a/arch/arm/include/asm/prom.h +++ b/arch/arm/include/asm/prom.h @@ -15,6 +15,7 @@ extern struct machine_desc *setup_machine_fdt(unsigned int dt_phys); extern void arm_dt_memblock_reserve(void); +extern void __init arm_dt_init_cpu_maps(void); #else /* CONFIG_OF */ @@ -24,6 +25,7 @@ static inline struct machine_desc *setup_machine_fdt(unsigned int dt_phys) } static inline void arm_dt_memblock_reserve(void) { } +static inline void arm_dt_init_cpu_maps(void) { } #endif /* CONFIG_OF */ #endif /* ASMARM_PROM_H */ diff --git a/arch/arm/include/asm/smp_plat.h b/arch/arm/include/asm/smp_plat.h index 558d6c80aca..aaa61b6f50f 100644 --- a/arch/arm/include/asm/smp_plat.h +++ b/arch/arm/include/asm/smp_plat.h @@ -5,6 +5,9 @@ #ifndef __ASMARM_SMP_PLAT_H #define __ASMARM_SMP_PLAT_H +#include <linux/cpumask.h> +#include <linux/err.h> + #include <asm/cputype.h> /* @@ -48,5 +51,19 @@ static inline int cache_ops_need_broadcast(void) */ extern int __cpu_logical_map[]; #define cpu_logical_map(cpu) __cpu_logical_map[cpu] +/* + * Retrieve logical cpu index corresponding to a given MPIDR[23:0] + * - mpidr: MPIDR[23:0] to be used for the look-up + * + * Returns the cpu logical index or -EINVAL on look-up error + */ +static inline int get_logical_index(u32 mpidr) +{ + int cpu; + for (cpu = 0; cpu < nr_cpu_ids; cpu++) + if (cpu_logical_map(cpu) == mpidr) + return cpu; + return -EINVAL; +} #endif |