| Quinn Jensen | 52c543f | 2007-07-09 22:06:53 +0100 | [diff] [blame] | 1 | /* |
| 2 | * Copyright (C) 2007 Lennert Buytenhek <buytenh@wantstofly.org> |
| 3 | * Copyright 2004-2007 Freescale Semiconductor, Inc. All Rights Reserved. |
| 4 | */ |
| 5 | |
| 6 | /* |
| 7 | * This program is free software; you can redistribute it and/or modify |
| 8 | * it under the terms of the GNU General Public License version 2 as |
| 9 | * published by the Free Software Foundation. |
| 10 | */ |
| 11 | |
| 12 | @ this macro disables fast irq (not implemented) |
| 13 | .macro disable_fiq |
| 14 | .endm |
| 15 | |
| 16 | .macro get_irqnr_preamble, base, tmp |
| 17 | .endm |
| 18 | |
| 19 | .macro arch_ret_to_user, tmp1, tmp2 |
| 20 | .endm |
| 21 | |
| 22 | @ this macro checks which interrupt occured |
| 23 | @ and returns its number in irqnr |
| 24 | @ and returns if an interrupt occured in irqstat |
| 25 | .macro get_irqnr_and_base, irqnr, irqstat, base, tmp |
| 26 | ldr \base, =AVIC_IO_ADDRESS(AVIC_BASE_ADDR) |
| 27 | @ Load offset & priority of the highest priority |
| 28 | @ interrupt pending from AVIC_NIVECSR |
| 29 | ldr \irqstat, [\base, #0x40] |
| 30 | @ Shift to get the decoded IRQ number, using ASR so |
| 31 | @ 'no interrupt pending' becomes 0xffffffff |
| 32 | mov \irqnr, \irqstat, asr #16 |
| 33 | @ set zero flag if IRQ + 1 == 0 |
| 34 | adds \tmp, \irqnr, #1 |
| 35 | .endm |
| 36 | |
| 37 | @ irq priority table (not used) |
| 38 | .macro irq_prio_table |
| 39 | .endm |