| /* |
| * arch/arm/mach-sa1100/include/mach/entry-macro.S |
| * |
| * Low-level IRQ helper macros for SA1100-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. |
| */ |
| |
| .macro get_irqnr_preamble, base, tmp |
| mov \base, #0xfa000000 @ ICIP = 0xfa050000 |
| add \base, \base, #0x00050000 |
| .endm |
| |
| .macro get_irqnr_and_base, irqnr, irqstat, base, tmp |
| ldr \irqstat, [\base] @ get irqs |
| ldr \irqnr, [\base, #4] @ ICMR = 0xfa050004 |
| ands \irqstat, \irqstat, \irqnr |
| mov \irqnr, #0 |
| beq 1001f |
| tst \irqstat, #0xff |
| moveq \irqstat, \irqstat, lsr #8 |
| addeq \irqnr, \irqnr, #8 |
| tsteq \irqstat, #0xff |
| moveq \irqstat, \irqstat, lsr #8 |
| addeq \irqnr, \irqnr, #8 |
| tsteq \irqstat, #0xff |
| moveq \irqstat, \irqstat, lsr #8 |
| addeq \irqnr, \irqnr, #8 |
| tst \irqstat, #0x0f |
| moveq \irqstat, \irqstat, lsr #4 |
| addeq \irqnr, \irqnr, #4 |
| tst \irqstat, #0x03 |
| moveq \irqstat, \irqstat, lsr #2 |
| addeq \irqnr, \irqnr, #2 |
| tst \irqstat, #0x01 |
| addeqs \irqnr, \irqnr, #1 |
| 1001: |
| .endm |
| |
