| Russell King | a09e64f | 2008-08-05 16:14:15 +0100 | [diff] [blame] | 1 | /* |
| 2 | * arch/arm/mach-sa1100/include/mach/entry-macro.S |
| 3 | * |
| 4 | * Low-level IRQ helper macros for SA1100-based platforms |
| 5 | * |
| 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. |
| 9 | */ |
| 10 | |
| Russell King | a09e64f | 2008-08-05 16:14:15 +0100 | [diff] [blame] | 11 | .macro get_irqnr_preamble, base, tmp |
| 12 | mov \base, #0xfa000000 @ ICIP = 0xfa050000 |
| 13 | add \base, \base, #0x00050000 |
| 14 | .endm |
| 15 | |
| Russell King | a09e64f | 2008-08-05 16:14:15 +0100 | [diff] [blame] | 16 | .macro get_irqnr_and_base, irqnr, irqstat, base, tmp |
| 17 | ldr \irqstat, [\base] @ get irqs |
| 18 | ldr \irqnr, [\base, #4] @ ICMR = 0xfa050004 |
| 19 | ands \irqstat, \irqstat, \irqnr |
| 20 | mov \irqnr, #0 |
| 21 | beq 1001f |
| 22 | tst \irqstat, #0xff |
| 23 | moveq \irqstat, \irqstat, lsr #8 |
| 24 | addeq \irqnr, \irqnr, #8 |
| 25 | tsteq \irqstat, #0xff |
| 26 | moveq \irqstat, \irqstat, lsr #8 |
| 27 | addeq \irqnr, \irqnr, #8 |
| 28 | tsteq \irqstat, #0xff |
| 29 | moveq \irqstat, \irqstat, lsr #8 |
| 30 | addeq \irqnr, \irqnr, #8 |
| 31 | tst \irqstat, #0x0f |
| 32 | moveq \irqstat, \irqstat, lsr #4 |
| 33 | addeq \irqnr, \irqnr, #4 |
| 34 | tst \irqstat, #0x03 |
| 35 | moveq \irqstat, \irqstat, lsr #2 |
| 36 | addeq \irqnr, \irqnr, #2 |
| 37 | tst \irqstat, #0x01 |
| 38 | addeqs \irqnr, \irqnr, #1 |
| 39 | 1001: |
| 40 | .endm |
| 41 | |