1/*
2 * arch/arm/mach-mv78xx0/include/mach/entry-macro.S
3 *
4 * Low-level IRQ helper macros for Marvell MV78xx0 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  disable_fiq
14	.endm
15
16	.macro  arch_ret_to_user, tmp1, tmp2
17	.endm
18
19	.macro  get_irqnr_preamble, base, tmp
20	ldr	\base, =IRQ_VIRT_BASE
21	.endm
22
23	.macro  get_irqnr_and_base, irqnr, irqstat, base, tmp
24	@ check low interrupts
25	ldr	\irqstat, [\base, #IRQ_CAUSE_LOW_OFF]
26	ldr	\tmp, [\base, #IRQ_MASK_LOW_OFF]
27	mov	\irqnr, #31
28	ands	\irqstat, \irqstat, \tmp
29	bne	1001f
30
31	@ if no low interrupts set, check high interrupts
32	ldr	\irqstat, [\base, #IRQ_CAUSE_HIGH_OFF]
33	ldr	\tmp, [\base, #IRQ_MASK_HIGH_OFF]
34	mov	\irqnr, #63
35	ands	\irqstat, \irqstat, \tmp
36	bne	1001f
37
38	@ if no high interrupts set, check error interrupts
39	ldr	\irqstat, [\base, #IRQ_CAUSE_ERR_OFF]
40	ldr	\tmp, [\base, #IRQ_MASK_ERR_OFF]
41	mov	\irqnr, #95
42	ands	\irqstat, \irqstat, \tmp
43
44	@ find first active interrupt source
451001:	clzne	\irqstat, \irqstat
46	subne	\irqnr, \irqnr, \irqstat
47	.endm
48