Merge tag 'locks-v3.16-2' of git://git.samba.org/jlayton/linux
[linux/fpc-iii.git] / arch / arm / mach-mv78xx0 / include / mach / entry-macro.S
blob6b1f088e0597975a2bd63c7f2fc7ab76d0e59dea
1 /*
2  * arch/arm/mach-mv78xx0/include/mach/entry-macro.S
3  *
4  * Low-level IRQ helper macros for Marvell MV78xx0 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  */
11 #include <mach/bridge-regs.h>
13         .macro  get_irqnr_preamble, base, tmp
14         ldr     \base, =IRQ_VIRT_BASE
15         .endm
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
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         bne     1001f
32         @ if no high interrupts set, check error interrupts
33         ldr     \irqstat, [\base, #IRQ_CAUSE_ERR_OFF]
34         ldr     \tmp, [\base, #IRQ_MASK_ERR_OFF]
35         mov     \irqnr, #95
36         ands    \irqstat, \irqstat, \tmp
38         @ find first active interrupt source
39 1001:   clzne   \irqstat, \irqstat
40         subne   \irqnr, \irqnr, \irqstat
41         .endm