Merge branch 'samsung/exynos5' into next/soc2
[linux-2.6.git] / arch / arm / mach-kirkwood / include / mach / entry-macro.S
1 /*
2  * arch/arm/mach-kirkwood/include/mach/entry-macro.S
3  *
4  * Low-level IRQ helper macros for Marvell Kirkwood 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  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         bne     1001f
24
25         @ if no low interrupts set, check high interrupts
26         ldr     \irqstat, [\base, #IRQ_CAUSE_HIGH_OFF]
27         ldr     \tmp, [\base, #IRQ_MASK_HIGH_OFF]
28         mov     \irqnr, #63
29         ands    \irqstat, \irqstat, \tmp
30
31         @ find first active interrupt source
32 1001:   clzne   \irqstat, \irqstat
33         subne   \irqnr, \irqnr, \irqstat
34         .endm