diff options
| author | Lorenzo Pieralisi <lorenzo.pieralisi@arm.com> | 2012-11-15 21:30:32 +0400 |
|---|---|---|
| committer | Lorenzo Pieralisi <lorenzo.pieralisi@arm.com> | 2012-11-19 19:44:33 +0400 |
| commit | dca463daa0151c5bbbd8ec8fd42882a3966d3c44 (patch) | |
| tree | 37cb674e65b14c2308898bb9a88f57edd946c906 /arch/arm/include | |
| parent | 77b67063bb6bce6d475e910d3b886a606d0d91f7 (diff) | |
| download | linux-dca463daa0151c5bbbd8ec8fd42882a3966d3c44.tar.xz | |
ARM: kernel: enhance MPIDR macro definitions
Kernel subsystems other than the topology layer need the MPIDR
mask definitions to access the MPIDR without relying on hardcoded
masks. This patch moves the MPIDR register masks definition to
a header file and defines a macro to simplify access to MPIDR bit fields
representing affinity levels.
Signed-off-by: Lorenzo Pieralisi <lorenzo.pieralisi@arm.com>
Acked-by: Will Deacon <will.deacon@arm.com>
Acked-by: Nicolas Pitre <nico@linaro.org>
Diffstat (limited to 'arch/arm/include')
| -rw-r--r-- | arch/arm/include/asm/cputype.h | 13 |
1 files changed, 13 insertions, 0 deletions
diff --git a/arch/arm/include/asm/cputype.h b/arch/arm/include/asm/cputype.h index cb47d28cbe1f..a59dcb5ab5fc 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 |