1/* 2 * arch/arm/mach-ixp4xx/include/mach/entry-macro.S 3 * 4 * Low-level IRQ helper macros for IXP4xx-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 <mach/hardware.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 ldr \irqstat, =(IXP4XX_INTC_BASE_VIRT+IXP4XX_ICIP_OFFSET) 23 ldr \irqstat, [\irqstat] @ get interrupts 24 cmp \irqstat, #0 25 beq 1001f @ upper IRQ? 26 clz \irqnr, \irqstat 27 mov \base, #31 28 sub \irqnr, \base, \irqnr 29 b 1002f @ lower IRQ being 30 @ handled 31 321001: 33 /* 34 * IXP465/IXP435 has an upper IRQ status register 35 */ 36#if defined(CONFIG_CPU_IXP46X) || defined(CONFIG_CPU_IXP43X) 37 ldr \irqstat, =(IXP4XX_INTC_BASE_VIRT+IXP4XX_ICIP2_OFFSET) 38 ldr \irqstat, [\irqstat] @ get upper interrupts 39 mov \irqnr, #63 40 clz \irqstat, \irqstat 41 cmp \irqstat, #32 42 subne \irqnr, \irqnr, \irqstat 43#endif 441002: 45 .endm 46