1/* 2 * arch/arm/mach-versatile/include/mach/entry-macro.S 3 * 4 * Low-level IRQ helper macros for Versatile 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#include <mach/hardware.h> 11#include <mach/platform.h> 12#include <asm/hardware/vic.h> 13 14 .macro disable_fiq 15 .endm 16 17 .macro get_irqnr_preamble, base, tmp 18 ldr \base, =IO_ADDRESS(VERSATILE_VIC_BASE) 19 .endm 20 21 .macro arch_ret_to_user, tmp1, tmp2 22 .endm 23 24 .macro get_irqnr_and_base, irqnr, irqstat, base, tmp 25 ldr \irqstat, [\base, #VIC_IRQ_STATUS] @ get masked status 26 mov \irqnr, #0 27 teq \irqstat, #0 28 beq 1003f 29 301001: tst \irqstat, #15 31 bne 1002f 32 add \irqnr, \irqnr, #4 33 movs \irqstat, \irqstat, lsr #4 34 bne 1001b 351002: tst \irqstat, #1 36 bne 1003f 37 add \irqnr, \irqnr, #1 38 movs \irqstat, \irqstat, lsr #1 39 bne 1002b 401003: /* EQ will be set if no irqs pending */ 41 42@ clz \irqnr, \irqstat 43@1003: /* EQ will be set if we reach MAXIRQNUM */ 44 .endm 45