| /* |
| * arch/arm/mach-kirkwood/include/mach/entry-macro.S |
| * |
| * Low-level IRQ helper macros for Marvell Kirkwood 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 <mach/bridge-regs.h> |
| |
| .macro get_irqnr_preamble, base, tmp |
| ldr \base, =IRQ_VIRT_BASE |
| .endm |
| |
| .macro get_irqnr_and_base, irqnr, irqstat, base, tmp |
| @ check low interrupts |
| ldr \irqstat, [\base, #IRQ_CAUSE_LOW_OFF] |
| ldr \tmp, [\base, #IRQ_MASK_LOW_OFF] |
| mov \irqnr, #31 |
| ands \irqstat, \irqstat, \tmp |
| bne 1001f |
| |
| @ if no low interrupts set, check high interrupts |
| ldr \irqstat, [\base, #IRQ_CAUSE_HIGH_OFF] |
| ldr \tmp, [\base, #IRQ_MASK_HIGH_OFF] |
| mov \irqnr, #63 |
| ands \irqstat, \irqstat, \tmp |
| |
| @ find first active interrupt source |
| 1001: clzne \irqstat, \irqstat |
| subne \irqnr, \irqnr, \irqstat |
| .endm |
