original_kernel/include/asm-arm/arch-omap/entry-macro.S

/*
 * include/asm-arm/arch-omap/entry-macro.S
 *
 * Low-level IRQ helper macros for OMAP-based 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.
 */

#if defined(CONFIG_ARCH_OMAP1)

 		.macro	disable_fiq
		.endm

		.macro	get_irqnr_and_base, irqnr, irqstat, base, tmp
		ldr	\base, =IO_ADDRESS(OMAP_IH1_BASE)
		ldr	\irqnr, [\base, #IRQ_ITR_REG_OFFSET]
		ldr	\tmp, [\base, #IRQ_MIR_REG_OFFSET]
		mov	\irqstat, #0xffffffff
		bic	\tmp, \irqstat, \tmp
		tst	\irqnr, \tmp
		beq	1510f

		ldr	\irqnr, [\base, #IRQ_SIR_FIQ_REG_OFFSET]
		cmp	\irqnr, #0
		ldreq	\irqnr, [\base, #IRQ_SIR_IRQ_REG_OFFSET]
		cmpeq	\irqnr, #INT_IH2_IRQ
		ldreq	\base, =IO_ADDRESS(OMAP_IH2_BASE)
		ldreq	\irqnr, [\base, #IRQ_SIR_IRQ_REG_OFFSET]
		addeqs	\irqnr, \irqnr, #32
1510:
		.endm

#elif defined(CONFIG_ARCH_OMAP24XX)

#include <asm/arch/omap24xx.h>

		.macro	disable_fiq
		.endm

		.macro	get_irqnr_and_base, irqnr, irqstat, base, tmp
		ldr	\base, =VA_IC_BASE
		ldr	\irqnr, [\base, #0x98] /* IRQ pending reg 1 */
		cmp	\irqnr, #0x0
		bne	2222f
		ldr	\irqnr, [\base, #0xb8] /* IRQ pending reg 2 */
		cmp	\irqnr, #0x0
		bne	2222f
		ldr	\irqnr, [\base, #0xd8] /* IRQ pending reg 3 */
		cmp	\irqnr, #0x0
2222:
		ldrne	\irqnr, [\base, #IRQ_SIR_IRQ]

		.endm

		.macro	irq_prio_table
		.endm

#endif