diff options
Diffstat (limited to 'arch/x86/include/asm/ioapic.h')
| -rw-r--r-- | arch/x86/include/asm/ioapic.h | 24 |
1 files changed, 24 insertions, 0 deletions
diff --git a/arch/x86/include/asm/ioapic.h b/arch/x86/include/asm/ioapic.h index f5d69db..77c443e 100644 --- a/arch/x86/include/asm/ioapic.h +++ b/arch/x86/include/asm/ioapic.h @@ -15,4 +15,28 @@ #define IO_APIC_INDEX (IO_APIC_ADDR + 0x00) #define IO_APIC_DATA (IO_APIC_ADDR + 0x10) +/* Indirect addressed register offset */ +#define IO_APIC_ID 0x00 +#define IO_APIC_VER 0x01 + +/** + * io_apic_read() - Read I/O APIC register + * + * This routine reads I/O APIC indirect addressed register. + * + * @reg: address of indirect addressed register + * @return: register value to read + */ +u32 io_apic_read(u32 reg); + +/** + * io_apic_write() - Write I/O APIC register + * + * This routine writes I/O APIC indirect addressed register. + * + * @reg: address of indirect addressed register + * @val: register value to write + */ +void io_apic_write(u32 reg, u32 val); + #endif |