/*
* include/asm-arm/arch-at91/entry-macro.S
* * Copyright (C) 2003-2005 SAN People * * Low-level IRQ helper macros for AT91RM9200 platforms * * This file is licensed under the terms of the GNU General Public * License version 2. This program is licensed "as is" without any * warranty of any kind, whether express or implied. */ #include <asm/hardware.h>
#include <asm/arch/at91_aic.h>
.macro disable_fiq .endm .macro get_irqnr_and_base, irqnr, irqstat, base, tmp ldr \base, =(AT91_VA_BASE_SYS) @ base virtual address of SYS peripherals ldr \irqnr, [\base, #AT91_AIC_IVR] @ read IRQ vector register: de-asserts nIRQ to processor (and clears interrupt) ldr \irqstat, [\base, #AT91_AIC_ISR] @ read interrupt source number teq \irqstat, #0 @ ISR is 0 when no current interrupt, or spurious interrupt streq \tmp, [\base, #AT91_AIC_EOICR] @ not going to be handled further, then ACK it now. .endm
