1/*
2 * arch/arm/mach-dove/include/mach/entry-macro.S
3 *
4 * Low-level IRQ helper macros for Marvell Dove platforms
5 *
6 * This file is licensed under the terms of the GNU General Public
7 * License version 2.  This program is licensed "as is" without any
8 * warranty of any kind, whether express or implied.
9 */
10
11#include <mach/bridge-regs.h>
12
13	.macro  get_irqnr_preamble, base, tmp
14	ldr	\base, =IRQ_VIRT_BASE
15	.endm
16
17	.macro  get_irqnr_and_base, irqnr, irqstat, base, tmp
18	@ check low interrupts
19	ldr	\irqstat, [\base, #IRQ_CAUSE_LOW_OFF]
20	ldr	\tmp, [\base, #IRQ_MASK_LOW_OFF]
21	mov	\irqnr, #31
22	ands	\irqstat, \irqstat, \tmp
23
24	@ if no low interrupts set, check high interrupts
25	ldreq	\irqstat, [\base, #IRQ_CAUSE_HIGH_OFF]
26	ldreq	\tmp, [\base, #IRQ_MASK_HIGH_OFF]
27	moveq	\irqnr, #63
28	andeqs	\irqstat, \irqstat, \tmp
29
30	@ find first active interrupt source
31	clzne	\irqstat, \irqstat
32	subne	\irqnr, \irqnr, \irqstat
33	.endm
34