| Bellido Nicolas | 038c5b6 | 2005-06-20 18:51:05 +0100 | [diff] [blame] | 1 | /* |
| 2 | * linux/include/asm-arm/arch-aaec2000/entry-macro.S |
| 3 | * |
| 4 | * Low-level IRQ helper for aaec-2000 based platforms |
| 5 | * |
| 6 | * Copyright (c) 2005 Nicolas Bellido Y Ortega |
| 7 | * |
| 8 | * This program is free software; you can redistribute it and/or modify |
| 9 | * it under the terms of the GNU General Public License version 2 as |
| 10 | * published by the Free Software Foundation. |
| 11 | * |
| 12 | */ |
| 13 | |
| 14 | .macro disable_fiq |
| 15 | .endm |
| 16 | |
| 17 | .macro get_irqnr_and_base, irqnr, irqstat, base, tmp |
| 18 | mov r4, #0xf8000000 |
| 19 | add r4, r4, #0x00000500 |
| 20 | mov \base, r4 |
| 21 | ldr \irqstat, [\base, #0] |
| 22 | cmp \irqstat, #0 |
| 23 | bne 1001f |
| 24 | ldr \irqnr, =NR_IRQS+1 |
| 25 | b 1003f |
| 26 | 1001: mov \irqnr, #0 |
| 27 | 1002: ands \tmp, \irqstat, #1 |
| 28 | mov \irqstat, \irqstat, LSR #1 |
| 29 | add \irqnr, \irqnr, #1 |
| 30 | beq 1002b |
| 31 | sub \irqnr, \irqnr, #1 |
| 32 | 1003: |
| 33 | .endm |