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/*
* arch/arm/mach-ixp2000/include/mach/entry-macro.S
*
* Low-level IRQ helper macros for IXP2000-based platforms
*
* This file is licensed under the terms of the GNU General Public
* License version 2. This program is licensed "as is" without any
* warranty of any kind, whether express or implied.
*/
#include <mach/irqs.h>
.macro get_irqnr_preamble, base, tmp
.endm
.macro get_irqnr_and_base, irqnr, irqstat, base, tmp
mov \irqnr, #0x0 @clear out irqnr as default
mov \base, #0xfe000000
orr \base, \base, #0x00e00000
orr \base, \base, #0x08
ldr \irqstat, [\base] @ get interrupts
cmp \irqstat, #0
beq 1001f
clz \irqnr, \irqstat
mov \base, #31
subs \irqnr, \base, \irqnr
/*
* We handle PCIA and PCIB here so we don't have an
* extra layer of code just to check these two bits.
*/
cmp \irqnr, #IRQ_IXP2000_PCI
bne 1001f
mov \base, #0xfe000000
orr \base, \base, #0x00c00000
orr \base, \base, #0x00000100
orr \base, \base, #0x00000058
ldr \irqstat, [\base]
mov \tmp, #(1<<26)
tst \irqstat, \tmp
movne \irqnr, #IRQ_IXP2000_PCIA
bne 1001f
mov \tmp, #(1<<27)
tst \irqstat, \tmp
movne \irqnr, #IRQ_IXP2000_PCIB
1001:
.endm
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