| 1 | /*␊ |
| 2 | * <Insert copyright here : it must be BSD-like so everyone can use it>␊ |
| 3 | *␊ |
| 4 | * Author: Erich Boleyn <erich@uruk.org> http://www.uruk.org/~erich/␊ |
| 5 | *␊ |
| 6 | * Header file implementing Intel MultiProcessor Specification (MPS)␊ |
| 7 | * version 1.1 and 1.4 SMP hardware control for Intel Architecture CPUs,␊ |
| 8 | * with hooks for running correctly on a standard PC without the hardware.␊ |
| 9 | *␊ |
| 10 | * This file was created from information in the Intel MPS version 1.4␊ |
| 11 | * document, order number 242016-004, which can be ordered from the␊ |
| 12 | * Intel literature center.␊ |
| 13 | */␊ |
| 14 | #ifndef _SMP_H␊ |
| 15 | #define _SMP_H␊ |
| 16 | ␊ |
| 17 | /*␊ |
| 18 | * This contains the local APIC hardware address.␊ |
| 19 | */␊ |
| 20 | extern unsigned imps_lapic_addr;␊ |
| 21 | /*␊ |
| 22 | * Defines that use variables␊ |
| 23 | */␊ |
| 24 | ␊ |
| 25 | #define IMPS_LAPIC_READ(x) (*((volatile unsigned *) (imps_lapic_addr+(x))))␊ |
| 26 | #define IMPS_LAPIC_WRITE(x, y) \␊ |
| 27 | (*((volatile unsigned *) (imps_lapic_addr+(x))) = (y))␊ |
| 28 | ␊ |
| 29 | #endif /* !_SMP_H */ |
