1/* 2 * arch/arm/mach-ep93xx/include/mach/entry-macro.S 3 * IRQ demultiplexing for EP93xx 4 * 5 * Copyright (C) 2006 Lennert Buytenhek <buytenh@wantstofly.org> 6 * 7 * This program is free software; you can redistribute it and/or modify 8 * it under the terms of the GNU General Public License as published by 9 * the Free Software Foundation; either version 2 of the License, or (at 10 * your option) any later version. 11 */ 12#include <mach/ep93xx-regs.h> 13 14 .macro disable_fiq 15 .endm 16 17 .macro get_irqnr_preamble, base, tmp 18 .endm 19 20 .macro arch_ret_to_user, tmp1, tmp2 21 .endm 22 23 .macro get_irqnr_and_base, irqnr, irqstat, base, tmp 24 ldr \base, =(EP93XX_AHB_VIRT_BASE) 25 orr \base, \base, #0x000b0000 26 mov \irqnr, #0 27 ldr \irqstat, [\base] @ lower 32 interrupts 28 cmp \irqstat, #0 29 bne 1001f 30 31 eor \base, \base, #0x00070000 32 ldr \irqstat, [\base] @ upper 32 interrupts 33 cmp \irqstat, #0 34 beq 1002f 35 mov \irqnr, #0x20 36 371001: 38 movs \tmp, \irqstat, lsl #16 39 movne \irqstat, \tmp 40 addeq \irqnr, \irqnr, #16 41 42 movs \tmp, \irqstat, lsl #8 43 movne \irqstat, \tmp 44 addeq \irqnr, \irqnr, #8 45 46 movs \tmp, \irqstat, lsl #4 47 movne \irqstat, \tmp 48 addeq \irqnr, \irqnr, #4 49 50 movs \tmp, \irqstat, lsl #2 51 movne \irqstat, \tmp 52 addeq \irqnr, \irqnr, #2 53 54 movs \tmp, \irqstat, lsl #1 55 addeq \irqnr, \irqnr, #1 56 orrs \base, \base, #1 57 581002: 59 .endm 60