diff options
| author | Catalin Marinas <catalin.marinas@arm.com> | 2015-03-24 14:02:46 +0000 |
|---|---|---|
| committer | Will Deacon <will.deacon@arm.com> | 2015-03-26 15:12:51 +0000 |
| commit | 828aef376d7a129547bc4ebb949965040177e3da (patch) | |
| tree | f4fd8bf12e062dfd646b139466e781d3d67c7c6b /include | |
| parent | fccb9a81fd08b61bed91ddef88341694f8ecbfd1 (diff) | |
ACPI / processor: Introduce phys_cpuid_t for CPU hardware ID
CPU hardware ID (phys_id) is defined as u32 in structure acpi_processor,
but phys_id is used as int in acpi processor driver, so it will lead to
some inconsistence for the drivers.
Furthermore, to cater for ACPI arch ports that implement 64 bits CPU
ids a generic CPU physical id type is required.
So introduce typedef u32 phys_cpuid_t in a common file, and introduce
a macro PHYS_CPUID_INVALID as (phys_cpuid_t)(-1) if it's not defined
by other archs, this will solve the inconsistence in acpi processor driver,
and will prepare for the ACPI on ARM64 for the 64 bit CPU hardware ID
in the following patch.
CC: Rafael J Wysocki <rjw@rjwysocki.net>
Suggested-by: Lorenzo Pieralisi <lorenzo.pieralisi@arm.com>
Reviewed-by: Grant Likely <grant.likely@linaro.org>
Acked-by: Sudeep Holla <sudeep.holla@arm.com>
Acked-by: Lorenzo Pieralisi <lorenzo.pieralisi@arm.com>
Acked-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
Signed-off-by: Catalin Marinas <catalin.marinas@arm.com>
[hj: reworked cpu physid map return codes]
Signed-off-by: Hanjun Guo <hanjun.guo@linaro.org>
Signed-off-by: Will Deacon <will.deacon@arm.com>
Diffstat (limited to 'include')
| -rw-r--r-- | include/acpi/processor.h | 6 | ||||
| -rw-r--r-- | include/linux/acpi.h | 7 |
2 files changed, 9 insertions, 4 deletions
diff --git a/include/acpi/processor.h b/include/acpi/processor.h index b95dc32a6e6b..4188a4d3b597 100644 --- a/include/acpi/processor.h +++ b/include/acpi/processor.h @@ -196,7 +196,7 @@ struct acpi_processor_flags { struct acpi_processor { acpi_handle handle; u32 acpi_id; - u32 phys_id; /* CPU hardware ID such as APIC ID for x86 */ + phys_cpuid_t phys_id; /* CPU hardware ID such as APIC ID for x86 */ u32 id; /* CPU logical ID allocated by OS */ u32 pblk; int performance_platform_limit; @@ -310,8 +310,8 @@ static inline int acpi_processor_get_bios_limit(int cpu, unsigned int *limit) #endif /* CONFIG_CPU_FREQ */ /* in processor_core.c */ -int acpi_get_phys_id(acpi_handle, int type, u32 acpi_id); -int acpi_map_cpuid(int phys_id, u32 acpi_id); +phys_cpuid_t acpi_get_phys_id(acpi_handle, int type, u32 acpi_id); +int acpi_map_cpuid(phys_cpuid_t phys_id, u32 acpi_id); int acpi_get_cpuid(acpi_handle, int type, u32 acpi_id); /* in processor_pdc.c */ diff --git a/include/linux/acpi.h b/include/linux/acpi.h index 24c7aa8b1d20..6ec33c595aea 100644 --- a/include/linux/acpi.h +++ b/include/linux/acpi.h @@ -146,9 +146,14 @@ void acpi_numa_x2apic_affinity_init(struct acpi_srat_x2apic_cpu_affinity *pa); int acpi_numa_memory_affinity_init (struct acpi_srat_mem_affinity *ma); void acpi_numa_arch_fixup(void); +#ifndef PHYS_CPUID_INVALID +typedef u32 phys_cpuid_t; +#define PHYS_CPUID_INVALID (phys_cpuid_t)(-1) +#endif + #ifdef CONFIG_ACPI_HOTPLUG_CPU /* Arch dependent functions for cpu hotplug support */ -int acpi_map_cpu(acpi_handle handle, int physid, int *pcpu); +int acpi_map_cpu(acpi_handle handle, phys_cpuid_t physid, int *pcpu); int acpi_unmap_cpu(int cpu); #endif /* CONFIG_ACPI_HOTPLUG_CPU */ |