| /* |
| * include/asm-arm/arch-ixp4xx/entry-macro.S |
| * |
| * Low-level IRQ helper macros for IXP4xx-based platforms |
| * |
| * This file is licensed under the terms of the GNU General Public |
| * License version 2. This program is licensed "as is" without any |
| * warranty of any kind, whether express or implied. |
| */ |
| #include <asm/hardware.h> |
| |
| .macro disable_fiq |
| .endm |
| |
| .macro get_irqnr_preamble, base, tmp |
| .endm |
| |
| .macro arch_ret_to_user, tmp1, tmp2 |
| .endm |
| |
| .macro get_irqnr_and_base, irqnr, irqstat, base, tmp |
| ldr \irqstat, =(IXP4XX_INTC_BASE_VIRT+IXP4XX_ICIP_OFFSET) |
| ldr \irqstat, [\irqstat] @ get interrupts |
| cmp \irqstat, #0 |
| beq 1001f @ upper IRQ? |
| clz \irqnr, \irqstat |
| mov \base, #31 |
| sub \irqnr, \base, \irqnr |
| b 1002f @ lower IRQ being |
| @ handled |
| |
| 1001: |
| /* |
| * IXP465/IXP435 has an upper IRQ status register |
| */ |
| #if defined(CONFIG_CPU_IXP46X) || defined(CONFIG_CPU_IXP43X) |
| ldr \irqstat, =(IXP4XX_INTC_BASE_VIRT+IXP4XX_ICIP2_OFFSET) |
| ldr \irqstat, [\irqstat] @ get upper interrupts |
| mov \irqnr, #63 |
| clz \irqstat, \irqstat |
| cmp \irqstat, #32 |
| subne \irqnr, \irqnr, \irqstat |
| #endif |
| 1002: |
| .endm |
| |
| |