1/*
2 * arch/arm/mach-versatile/include/mach/entry-macro.S
3 *
4 * Low-level IRQ helper macros for Versatile 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#include <mach/hardware.h>
11#include <mach/platform.h>
12#include <asm/hardware/vic.h>
13
14		.macro	disable_fiq
15		.endm
16
17		.macro  get_irqnr_preamble, base, tmp
18		ldr	\base, =IO_ADDRESS(VERSATILE_VIC_BASE)
19		.endm
20
21		.macro  arch_ret_to_user, tmp1, tmp2
22		.endm
23
24		.macro	get_irqnr_and_base, irqnr, irqstat, base, tmp
25		ldr	\irqstat, [\base, #VIC_IRQ_STATUS]	@ get masked status
26		mov	\irqnr, #0
27		teq	\irqstat, #0
28		beq	1003f
29
301001:		tst	\irqstat, #15
31		bne	1002f
32		add	\irqnr, \irqnr, #4
33		movs	\irqstat, \irqstat, lsr #4
34		bne	1001b
351002:		tst	\irqstat, #1
36		bne	1003f
37		add	\irqnr, \irqnr, #1
38		movs	\irqstat, \irqstat, lsr #1
39		bne	1002b
401003:		/* EQ will be set if no irqs pending */
41
42@		clz	\irqnr, \irqstat
43@1003:		/* EQ will be set if we reach MAXIRQNUM */
44		.endm
45
46