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Saeed Bisharaedabd382009-08-06 15:12:43 +03001/*
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
Saeed Bisharaedabd382009-08-06 15:12:43 +030013 .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