1/* 2 * arch/arm/mach-mv78xx0/include/mach/entry-macro.S 3 * 4 * Low-level IRQ helper macros for Marvell MV78xx0 platforms 5 * 6 * This file is licensed under the terms of the GNU General Public 7 * License version 2. This program is licensed "as is" without any 8 * warranty of any kind, whether express or implied. 9 */ 10 11#include <mach/bridge-regs.h> 12 13 .macro disable_fiq 14 .endm 15 16 .macro arch_ret_to_user, tmp1, tmp2 17 .endm 18 19 .macro get_irqnr_preamble, base, tmp 20 ldr \base, =IRQ_VIRT_BASE 21 .endm 22 23 .macro get_irqnr_and_base, irqnr, irqstat, base, tmp 24 @ check low interrupts 25 ldr \irqstat, [\base, #IRQ_CAUSE_LOW_OFF] 26 ldr \tmp, [\base, #IRQ_MASK_LOW_OFF] 27 mov \irqnr, #31 28 ands \irqstat, \irqstat, \tmp 29 bne 1001f 30 31 @ if no low interrupts set, check high interrupts 32 ldr \irqstat, [\base, #IRQ_CAUSE_HIGH_OFF] 33 ldr \tmp, [\base, #IRQ_MASK_HIGH_OFF] 34 mov \irqnr, #63 35 ands \irqstat, \irqstat, \tmp 36 bne 1001f 37 38 @ if no high interrupts set, check error interrupts 39 ldr \irqstat, [\base, #IRQ_CAUSE_ERR_OFF] 40 ldr \tmp, [\base, #IRQ_MASK_ERR_OFF] 41 mov \irqnr, #95 42 ands \irqstat, \irqstat, \tmp 43 44 @ find first active interrupt source 451001: clzne \irqstat, \irqstat 46 subne \irqnr, \irqnr, \irqstat 47 .endm 48