diff options
| author | Sunil V L <sunilvl@ventanamicro.com> | 2023-05-15 08:49:16 +0300 |
|---|---|---|
| committer | Palmer Dabbelt <palmer@rivosinc.com> | 2023-06-01 18:45:03 +0300 |
| commit | f995611994704b5c039731287b897993808e63e3 (patch) | |
| tree | 40a204a525d1c8b289b6a189d8e0cb563718a8f4 /arch/riscv/include | |
| parent | 724f4c0df7665a1bb9cb105a20131dfca5c032dd (diff) | |
| download | linux-f995611994704b5c039731287b897993808e63e3.tar.xz | |
RISC-V: ACPI: Cache and retrieve the RINTC structure
RINTC structures in the MADT provide mapping between the hartid
and the CPU. This is required many times even at run time like
cpuinfo. So, instead of parsing the ACPI table every time, cache
the RINTC structures and provide a function to get the correct
RINTC structure for a given cpu.
Signed-off-by: Sunil V L <sunilvl@ventanamicro.com>
Acked-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
Reviewed-by: Andrew Jones <ajones@ventanamicro.com>
Link: https://lore.kernel.org/r/20230515054928.2079268-10-sunilvl@ventanamicro.com
Signed-off-by: Palmer Dabbelt <palmer@rivosinc.com>
Diffstat (limited to 'arch/riscv/include')
| -rw-r--r-- | arch/riscv/include/asm/acpi.h | 10 |
1 files changed, 10 insertions, 0 deletions
diff --git a/arch/riscv/include/asm/acpi.h b/arch/riscv/include/asm/acpi.h index 9be52b6ffae1..6519529c8bdf 100644 --- a/arch/riscv/include/asm/acpi.h +++ b/arch/riscv/include/asm/acpi.h @@ -59,6 +59,16 @@ static inline bool acpi_has_cpu_in_madt(void) static inline void arch_fix_phys_package_id(int num, u32 slot) { } +void acpi_init_rintc_map(void); +struct acpi_madt_rintc *acpi_cpu_get_madt_rintc(int cpu); +u32 get_acpi_id_for_cpu(int cpu); +#else +static inline void acpi_init_rintc_map(void) { } +static inline struct acpi_madt_rintc *acpi_cpu_get_madt_rintc(int cpu) +{ + return NULL; +} + #endif /* CONFIG_ACPI */ #endif /*_ASM_ACPI_H*/ |