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-rw-r--r--arch/arm/mach-s3c6400/include/mach/entry-macro.S44
1 files changed, 44 insertions, 0 deletions
diff --git a/arch/arm/mach-s3c6400/include/mach/entry-macro.S b/arch/arm/mach-s3c6400/include/mach/entry-macro.S
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1/* arch/arm/mach-s3c6400/include/mach/entry-macro.S
2 *
3 * Copyright 2008 Openmoko, Inc.
4 * Copyright 2008 Simtec Electronics
5 * http://armlinux.simtec.co.uk/
6 * Ben Dooks <ben@simtec.co.uk>
7 *
8 * Low-level IRQ helper macros for the Samsung S3C64XX series
9 *
10 * This file is licensed under the terms of the GNU General Public
11 * License version 2. This program is licensed "as is" without any
12 * warranty of any kind, whether express or implied.
13*/
14
15#include <asm/hardware/vic.h>
16#include <mach/map.h>
17#include <plat/irqs.h>
18
19 .macro disable_fiq
20 .endm
21
22 .macro get_irqnr_preamble, base, tmp
23 ldr \base, =S3C_VA_VIC0
24 .endm
25
26 .macro arch_ret_to_user, tmp1, tmp2
27 .endm
28
29 .macro get_irqnr_and_base, irqnr, irqstat, base, tmp
30
31 @ check the vic0
32 mov \irqnr, # S3C_IRQ_OFFSET + 31
33 ldr \irqstat, [ \base, # VIC_IRQ_STATUS ]
34 teq \irqstat, #0
35
36 @ otherwise try vic1
37 addeq \tmp, \base, #(S3C_VA_VIC1 - S3C_VA_VIC0)
38 addeq \irqnr, \irqnr, #32
39 ldreq \irqstat, [ \tmp, # VIC_IRQ_STATUS ]
40 teqeq \irqstat, #0
41
42 clzne \irqstat, \irqstat
43 subne \irqnr, \irqnr, \irqstat
44 .endm