2 * arch/arm/mach-orion5x/include/mach/entry-macro.S
4 * Low-level IRQ helper macros for Orion platforms
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.
11 #include <mach/bridge-regs.h>
13 .macro get_irqnr_preamble, base, tmp
14 ldr \base, =MAIN_IRQ_CAUSE
17 .macro get_irqnr_and_base, irqnr, irqstat, base, tmp
18 ldr \irqstat, [\base, #0] @ main cause
19 ldr \tmp, [\base, #(MAIN_IRQ_MASK - MAIN_IRQ_CAUSE)] @ main mask
20 mov \irqnr, #0 @ default irqnr
21 @ find cause bits that are unmasked
22 ands \irqstat, \irqstat, \tmp @ clear Z flag if any
23 clzne \irqnr, \irqstat @ calc irqnr
24 rsbne \irqnr, \irqnr, #32