1/*
2 * arch/arm/mach-integrator/include/mach/entry-macro.S
3 *
4 * Low-level IRQ helper macros for Integrator 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 <mach/irqs.h>
13
14 		.macro	disable_fiq
15		.endm
16
17		.macro  get_irqnr_preamble, base, tmp
18		.endm
19
20		.macro  arch_ret_to_user, tmp1, tmp2
21		.endm
22
23		.macro	get_irqnr_and_base, irqnr, irqstat, base, tmp
24/* FIXME: should not be using soo many LDRs here */
25		ldr	\base, =IO_ADDRESS(INTEGRATOR_IC_BASE)
26		mov	\irqnr, #IRQ_PIC_START
27		ldr	\irqstat, [\base, #IRQ_STATUS]		@ get masked status
28		ldr	\base, =IO_ADDRESS(INTEGRATOR_HDR_BASE)
29		teq	\irqstat, #0
30		ldreq	\irqstat, [\base, #(INTEGRATOR_HDR_IC_OFFSET+IRQ_STATUS)]
31		moveq	\irqnr, #IRQ_CIC_START
32
331001:		tst	\irqstat, #15
34		bne	1002f
35		add	\irqnr, \irqnr, #4
36		movs	\irqstat, \irqstat, lsr #4
37		bne	1001b
381002:		tst	\irqstat, #1
39		bne	1003f
40		add	\irqnr, \irqnr, #1
41		movs	\irqstat, \irqstat, lsr #1
42		bne	1002b
431003:		/* EQ will be set if no irqs pending */
44		.endm
45
46