| Russell King | a09e64f | 2008-08-05 16:14:15 +0100 | [diff] [blame] | 1 | /* |
| 2 | * arch/arm/mach-ks8695/include/mach/entry-macro.S |
| 3 | * |
| 4 | * Copyright (C) 2006 Ben Dooks <ben@simtec.co.uk> |
| 5 | * Copyright (C) 2006 Simtec Electronics |
| 6 | * |
| 7 | * Low-level IRQ helper macros for KS8695 |
| 8 | * |
| 9 | * This file is licensed under the terms of the GNU General Public |
| 10 | * License version 2. This program is licensed "as is" without any |
| 11 | * warranty of any kind, whether express or implied. |
| 12 | */ |
| 13 | |
| 14 | #include <mach/hardware.h> |
| 15 | #include <mach/regs-irq.h> |
| 16 | |
| Russell King | a09e64f | 2008-08-05 16:14:15 +0100 | [diff] [blame] | 17 | .macro get_irqnr_preamble, base, tmp |
| 18 | ldr \base, =KS8695_IRQ_VA @ Base address of interrupt controller |
| 19 | .endm |
| 20 | |
| Russell King | a09e64f | 2008-08-05 16:14:15 +0100 | [diff] [blame] | 21 | .macro get_irqnr_and_base, irqnr, irqstat, base, tmp |
| 22 | ldr \irqstat, [\base, #KS8695_INTMS] @ Mask Status register |
| 23 | |
| 24 | teq \irqstat, #0 |
| 25 | beq 1001f |
| 26 | |
| 27 | mov \irqnr, #0 |
| 28 | |
| 29 | tst \irqstat, #0xff |
| 30 | moveq \irqstat, \irqstat, lsr #8 |
| 31 | addeq \irqnr, \irqnr, #8 |
| 32 | tsteq \irqstat, #0xff |
| 33 | moveq \irqstat, \irqstat, lsr #8 |
| 34 | addeq \irqnr, \irqnr, #8 |
| 35 | tsteq \irqstat, #0xff |
| 36 | moveq \irqstat, \irqstat, lsr #8 |
| 37 | addeq \irqnr, \irqnr, #8 |
| 38 | tst \irqstat, #0x0f |
| 39 | moveq \irqstat, \irqstat, lsr #4 |
| 40 | addeq \irqnr, \irqnr, #4 |
| 41 | tst \irqstat, #0x03 |
| 42 | moveq \irqstat, \irqstat, lsr #2 |
| 43 | addeq \irqnr, \irqnr, #2 |
| 44 | tst \irqstat, #0x01 |
| 45 | addeqs \irqnr, \irqnr, #1 |
| 46 | 1001: |
| 47 | .endm |