ia64/linux-2.6.18-xen.hg

view include/asm-arm/arch-at91rm9200/entry-macro.S @ 782:9ab1c319531f

merge with linux-2.6.18-xen.hg
author Isaku Yamahata <yamahata@valinux.co.jp>
date Wed Jan 28 13:07:23 2009 +0900 (2009-01-28)
parents 831230e53067
children
line source
1 /*
2 * include/asm-arm/arch-at91rm9200/entry-macro.S
3 *
4 * Copyright (C) 2003-2005 SAN People
5 *
6 * Low-level IRQ helper macros for AT91RM9200 platforms
7 *
8 * This file is licensed under the terms of the GNU General Public
9 * License version 2. This program is licensed "as is" without any
10 * warranty of any kind, whether express or implied.
11 */
13 #include <asm/hardware.h>
15 .macro disable_fiq
16 .endm
18 .macro get_irqnr_and_base, irqnr, irqstat, base, tmp
19 ldr \base, =(AT91_VA_BASE_SYS) @ base virtual address of SYS peripherals
20 ldr \irqnr, [\base, #AT91_AIC_IVR] @ read IRQ vector register: de-asserts nIRQ to processor (and clears interrupt)
21 ldr \irqstat, [\base, #AT91_AIC_ISR] @ read interrupt source number
22 teq \irqstat, #0 @ ISR is 0 when no current interrupt, or spurious interrupt
23 streq \tmp, [\base, #AT91_AIC_EOICR] @ not going to be handled further, then ACK it now.
24 .endm