1/* 2 * include/asm-arm/arch-ixp2000/entry-macro.S 3 * 4 * Low-level IRQ helper macros for IXP2000-based 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 <asm/arch/irqs.h> 11 12 .macro disable_fiq 13 .endm 14 15 .macro get_irqnr_preamble, base, tmp 16 .endm 17 18 .macro arch_ret_to_user, tmp1, tmp2 19 .endm 20 21 .macro get_irqnr_and_base, irqnr, irqstat, base, tmp 22 23 mov \irqnr, #0x0 @clear out irqnr as default 24 mov \base, #0xfe000000 25 orr \base, \base, #0x00e00000 26 orr \base, \base, #0x08 27 ldr \irqstat, [\base] @ get interrupts 28 29 cmp \irqstat, #0 30 beq 1001f 31 32 clz \irqnr, \irqstat 33 mov \base, #31 34 subs \irqnr, \base, \irqnr 35 36 /* 37 * We handle PCIA and PCIB here so we don't have an 38 * extra layer of code just to check these two bits. 39 */ 40 cmp \irqnr, #IRQ_IXP2000_PCI 41 bne 1001f 42 43 mov \base, #0xfe000000 44 orr \base, \base, #0x00c00000 45 orr \base, \base, #0x00000100 46 orr \base, \base, #0x00000058 47 ldr \irqstat, [\base] 48 49 mov \tmp, #(1<<26) 50 tst \irqstat, \tmp 51 movne \irqnr, #IRQ_IXP2000_PCIA 52 bne 1001f 53 54 mov \tmp, #(1<<27) 55 tst \irqstat, \tmp 56 movne \irqnr, #IRQ_IXP2000_PCIB 57 581001: 59 .endm 60