irq.h

来自「内核linux2.4.20,可跟rtlinux3.2打补丁 组成实时linux系」· C头文件 代码 · 共 34 行

/*
 *  linux/include/asm-arm/arch-ebsa285/irq.h
 *
 *  Copyright (C) 1996-1998 Russell King
 *
 * This program is free software; you can redistribute it and/or modify
 * it under the terms of the GNU General Public License version 2 as
 * published by the Free Software Foundation.
 *
 *  Changelog:
 *   22-Aug-1998 RMK	Restructured IRQ routines
 *   03-Sep-1998 PJB	Merged CATS support
 *   20-Jan-1998 RMK	Started merge of EBSA286, CATS and NetWinder
 *   26-Jan-1999 PJB	Don't use IACK on CATS
 *   16-Mar-1999 RMK	Added autodetect of ISA PICs
 */
#include <asm/hardware.h>
#include <asm/hardware/dec21285.h>
#include <asm/irq.h>
#include <asm/mach-types.h>

int isa_irq = -1;

static inline int fixup_irq(unsigned int irq)
{
#ifdef PCIIACK_BASE
	if (irq == isa_irq)
		irq = *(unsigned char *)PCIIACK_BASE;
#endif

	return irq;
}