Merge branch 'samsung/exynos5' into next/soc2
[linux-2.6.git] / arch / arm / mach-ixp2000 / include / mach / entry-macro.S
1 /*
2  * arch/arm/mach-ixp2000/include/mach/entry-macro.S
3  *
4  * Low-level IRQ helper macros for IXP2000-based 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/irqs.h>
11
12                 .macro  get_irqnr_preamble, base, tmp
13                 .endm
14
15                 .macro  get_irqnr_and_base, irqnr, irqstat, base, tmp
16
17                 mov     \irqnr, #0x0              @clear out irqnr as default
18                 mov     \base, #0xfe000000
19                 orr     \base, \base, #0x00e00000
20                 orr     \base, \base, #0x08
21                 ldr     \irqstat, [\base]         @ get interrupts
22
23                 cmp     \irqstat, #0
24                 beq     1001f
25
26                 clz     \irqnr, \irqstat
27                 mov     \base, #31
28                 subs    \irqnr, \base, \irqnr
29
30                 /*
31                  * We handle PCIA and PCIB here so we don't have an
32                  * extra layer of code just to check these two bits.
33                  */
34                 cmp     \irqnr, #IRQ_IXP2000_PCI
35                 bne     1001f
36
37                 mov     \base, #0xfe000000
38                 orr     \base, \base, #0x00c00000
39                 orr     \base, \base, #0x00000100
40                 orr     \base, \base, #0x00000058
41                 ldr     \irqstat, [\base]
42
43                 mov     \tmp, #(1<<26)
44                 tst     \irqstat, \tmp
45                 movne   \irqnr, #IRQ_IXP2000_PCIA
46                 bne     1001f
47
48                 mov     \tmp, #(1<<27)
49                 tst     \irqstat, \tmp
50                 movne   \irqnr, #IRQ_IXP2000_PCIB
51
52 1001:
53                 .endm
54