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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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