| /* SPDX-License-Identifier: GPL-2.0 */ |
| /* |
| * From coreboot file of the same name |
| * |
| * Copyright (C) 2010 coresystems GmbH |
| */ |
| |
| #ifndef __ASM_IOAPIC_H |
| #define __ASM_IOAPIC_H |
| |
| #define IO_APIC_ADDR 0xfec00000 |
| |
| /* Direct addressed register */ |
| #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); |
| |
| void io_apic_set_id(int ioapic_id); |
| |
| #endif |
