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/* * arch/arm/mach-mv78xx0/include/mach/entry-macro.S * * Low-level IRQ helper macros for Marvell MV78xx0 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 bne 1001f @ if no high interrupts set, check error interrupts ldr \irqstat, [\base, #IRQ_CAUSE_ERR_OFF] ldr \tmp, [\base, #IRQ_MASK_ERR_OFF] mov \irqnr, #95 ands \irqstat, \irqstat, \tmp @ find first active interrupt source 1001: clzne \irqstat, \irqstat subne \irqnr, \irqnr, \irqstat .endm