Merge branch 'next/soc-exynos5250-arch' of git://git.kernel.org/pub/scm/linux/kernel...
[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  disable_fiq
13                 .endm
14
15                 .macro  get_irqnr_preamble, base, tmp
16                 .endm
17
18                 .macro  arch_ret_to_user, tmp1, tmp2
19                 .endm
20
21                 .macro  get_irqnr_and_base, irqnr, irqstat, base, tmp
22
23                 mov     \irqnr, #0x0              @clear out irqnr as default
24                 mov     \base, #0xfe000000
25                 orr     \base, \base, #0x00e00000
26                 orr     \base, \base, #0x08
27                 ldr     \irqstat, [\base]         @ get interrupts
28
29                 cmp     \irqstat, #0
30                 beq     1001f
31
32                 clz     \irqnr, \irqstat
33                 mov     \base, #31
34                 subs    \irqnr, \base, \irqnr
35
36                 /*
37                  * We handle PCIA and PCIB here so we don't have an
38                  * extra layer of code just to check these two bits.
39                  */
40                 cmp     \irqnr, #IRQ_IXP2000_PCI
41                 bne     1001f
42
43                 mov     \base, #0xfe000000
44                 orr     \base, \base, #0x00c00000
45                 orr     \base, \base, #0x00000100
46                 orr     \base, \base, #0x00000058
47                 ldr     \irqstat, [\base]
48
49                 mov     \tmp, #(1<<26)
50                 tst     \irqstat, \tmp
51                 movne   \irqnr, #IRQ_IXP2000_PCIA
52                 bne     1001f
53
54                 mov     \tmp, #(1<<27)
55                 tst     \irqstat, \tmp
56                 movne   \irqnr, #IRQ_IXP2000_PCIB
57
58 1001:
59                 .endm
60