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/*
* arch/arm/mach-kirkwood/include/mach/entry-macro.S
*
* Low-level IRQ helper macros for Marvell Kirkwood 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.
*/
#include <mach/bridge-regs.h>
.macro get_irqnr_preamble, base, tmp
ldr \base, =IRQ_VIRT_BASE
.endm
.macro get_irqnr_and_base, irqnr, irqstat, base, tmp
@ check low interrupts
ldr \irqstat, [\base, #IRQ_CAUSE_LOW_OFF]
ldr \tmp, [\base, #IRQ_MASK_LOW_OFF]
mov \irqnr, #31
ands \irqstat, \irqstat, \tmp
bne 1001f
@ if no low interrupts set, check high interrupts
ldr \irqstat, [\base, #IRQ_CAUSE_HIGH_OFF]
ldr \tmp, [\base, #IRQ_MASK_HIGH_OFF]
mov \irqnr, #63
ands \irqstat, \irqstat, \tmp
@ find first active interrupt source
1001: clzne \irqstat, \irqstat
subne \irqnr, \irqnr, \irqstat
.endm
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