Merge branch 'next/soc-exynos5250-arch' of git://git.kernel.org/pub/scm/linux/kernel...
[linux-2.6.git] / arch / arm / mach-ixp4xx / include / mach / entry-macro.S
1 /*
2  * arch/arm/mach-ixp4xx/include/mach/entry-macro.S
3  *
4  * Low-level IRQ helper macros for IXP4xx-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/hardware.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                 ldr     \irqstat, =(IXP4XX_INTC_BASE_VIRT+IXP4XX_ICIP_OFFSET)
23                 ldr     \irqstat, [\irqstat]            @ get interrupts
24                 cmp     \irqstat, #0
25                 beq     1001f                           @ upper IRQ?
26                 clz     \irqnr, \irqstat
27                 mov     \base, #31
28                 sub     \irqnr, \base, \irqnr
29                 b       1002f                           @ lower IRQ being
30                                                         @ handled
31
32 1001:
33                 /*
34                  * IXP465/IXP435 has an upper IRQ status register
35                  */
36 #if defined(CONFIG_CPU_IXP46X) || defined(CONFIG_CPU_IXP43X)
37                 ldr     \irqstat, =(IXP4XX_INTC_BASE_VIRT+IXP4XX_ICIP2_OFFSET)
38                 ldr     \irqstat, [\irqstat]            @ get upper interrupts
39                 mov     \irqnr, #63
40                 clz     \irqstat, \irqstat
41                 cmp     \irqstat, #32
42                 subne   \irqnr, \irqnr, \irqstat
43 #endif
44 1002:
45                 .endm
46
47