| Simon Glass | a2f5d09 | 2014-11-14 18:18:27 -0700 | [diff] [blame] | 1 | /* |
| 2 | * From coreboot file of the same name |
| 3 | * |
| 4 | * Copyright (C) 2010 coresystems GmbH |
| 5 | * |
| 6 | * SPDX-License-Identifier: GPL-2.0 |
| 7 | */ |
| 8 | |
| 9 | #ifndef __ASM_IOAPIC_H |
| 10 | #define __ASM_IOAPIC_H |
| 11 | |
| 12 | #define IO_APIC_ADDR 0xfec00000 |
| Bin Meng | ba9091f | 2015-06-23 12:18:48 +0800 | [diff] [blame] | 13 | |
| 14 | /* Direct addressed register */ |
| 15 | #define IO_APIC_INDEX (IO_APIC_ADDR + 0x00) |
| Simon Glass | a2f5d09 | 2014-11-14 18:18:27 -0700 | [diff] [blame] | 16 | #define IO_APIC_DATA (IO_APIC_ADDR + 0x10) |
| Simon Glass | a2f5d09 | 2014-11-14 18:18:27 -0700 | [diff] [blame] | 17 | |
| Bin Meng | 3d23287 | 2015-06-23 12:18:49 +0800 | [diff] [blame] | 18 | /* Indirect addressed register offset */ |
| 19 | #define IO_APIC_ID 0x00 |
| 20 | #define IO_APIC_VER 0x01 |
| 21 | |
| 22 | /** |
| 23 | * io_apic_read() - Read I/O APIC register |
| 24 | * |
| 25 | * This routine reads I/O APIC indirect addressed register. |
| 26 | * |
| 27 | * @reg: address of indirect addressed register |
| 28 | * @return: register value to read |
| 29 | */ |
| 30 | u32 io_apic_read(u32 reg); |
| 31 | |
| 32 | /** |
| 33 | * io_apic_write() - Write I/O APIC register |
| 34 | * |
| 35 | * This routine writes I/O APIC indirect addressed register. |
| 36 | * |
| 37 | * @reg: address of indirect addressed register |
| 38 | * @val: register value to write |
| 39 | */ |
| 40 | void io_apic_write(u32 reg, u32 val); |
| 41 | |
| Simon Glass | a2f5d09 | 2014-11-14 18:18:27 -0700 | [diff] [blame] | 42 | #endif |