Merge branch 'samsung/exynos5' into next/soc2
[linux-2.6.git] / arch / arm / mach-integrator / include / mach / entry-macro.S
1 /*
2  * arch/arm/mach-integrator/include/mach/entry-macro.S
3  *
4  * Low-level IRQ helper macros for Integrator 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 #include <mach/platform.h>
12 #include <mach/irqs.h>
13
14                 .macro  get_irqnr_preamble, base, tmp
15                 .endm
16
17                 .macro  get_irqnr_and_base, irqnr, irqstat, base, tmp
18 /* FIXME: should not be using soo many LDRs here */
19                 ldr     \base, =IO_ADDRESS(INTEGRATOR_IC_BASE)
20                 mov     \irqnr, #IRQ_PIC_START
21                 ldr     \irqstat, [\base, #IRQ_STATUS]          @ get masked status
22                 ldr     \base, =IO_ADDRESS(INTEGRATOR_HDR_BASE)
23                 teq     \irqstat, #0
24                 ldreq   \irqstat, [\base, #(INTEGRATOR_HDR_IC_OFFSET+IRQ_STATUS)]
25                 moveq   \irqnr, #IRQ_CIC_START
26
27 1001:           tst     \irqstat, #15
28                 bne     1002f
29                 add     \irqnr, \irqnr, #4
30                 movs    \irqstat, \irqstat, lsr #4
31                 bne     1001b
32 1002:           tst     \irqstat, #1
33                 bne     1003f
34                 add     \irqnr, \irqnr, #1
35                 movs    \irqstat, \irqstat, lsr #1
36                 bne     1002b
37 1003:           /* EQ will be set if no irqs pending */
38                 .endm
39