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- /*
- * arch/arm/mach-kirkwood/include/mach/entry-macro.S
- *
- * Low-level IRQ helper macros for Marvell Kirkwood 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/bridge-regs.h>
- .macro get_irqnr_preamble, base, tmp
- ldr \base, =IRQ_VIRT_BASE
- .endm
- .macro get_irqnr_and_base, irqnr, irqstat, base, tmp
- @ check low interrupts
- ldr \irqstat, [\base, #IRQ_CAUSE_LOW_OFF]
- ldr \tmp, [\base, #IRQ_MASK_LOW_OFF]
- mov \irqnr, #31
- ands \irqstat, \irqstat, \tmp
- bne 1001f
- @ if no low interrupts set, check high interrupts
- ldr \irqstat, [\base, #IRQ_CAUSE_HIGH_OFF]
- ldr \tmp, [\base, #IRQ_MASK_HIGH_OFF]
- mov \irqnr, #63
- ands \irqstat, \irqstat, \tmp
- @ find first active interrupt source
- 1001: clzne \irqstat, \irqstat
- subne \irqnr, \irqnr, \irqstat
- .endm
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