| /* |
| * include/asm-arm/arch-imx/entry-macro.S |
| * |
| * Low-level IRQ helper macros for iMX-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/arch/hardware.h> |
| |
| .macro disable_fiq |
| .endm |
| |
| .macro get_irqnr_preamble, base, tmp |
| .endm |
| |
| .macro arch_ret_to_user, tmp1, tmp2 |
| .endm |
| |
| #define AITC_NIVECSR 0x40 |
| .macro get_irqnr_and_base, irqnr, irqstat, base, tmp |
| ldr \base, =IO_ADDRESS(IMX_AITC_BASE) |
| @ Load offset & priority of the highest priority |
| @ interrupt pending. |
| ldr \irqstat, [\base, #AITC_NIVECSR] |
| @ Shift off the priority leaving the offset or |
| @ "interrupt number", use arithmetic shift to |
| @ transform illegal source (0xffff) as -1 |
| mov \irqnr, \irqstat, asr #16 |
| adds \tmp, \irqnr, #1 |
| .endm |
