projects / deliverable / linux.git / blame
| Commit | Line | Data |
|---|---|---|
| 52c543f9 QJ |
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 | ||
| a2449091 SH |
12 | #include <mach/hardware.h> |
| 13 | ||
| 479c901f DA |
14 | #define AVIC_NIMASK 0x04 |
| 15 | ||
| 52c543f9 QJ |
16 | @ this macro disables fast irq (not implemented) |
| 17 | .macro disable_fiq | |
| 18 | .endm | |
| 19 | ||
| 20 | .macro get_irqnr_preamble, base, tmp | |
| 12b8eb86 SH |
21 | ldr \base, =avic_base |
| 22 | ldr \base, [\base] | |
| 479c901f DA |
23 | #ifdef CONFIG_MXC_IRQ_PRIOR |
| 24 | ldr r4, [\base, #AVIC_NIMASK] | |
| 25 | #endif | |
| 52c543f9 QJ |
26 | .endm |
| 27 | ||
| 28 | .macro arch_ret_to_user, tmp1, tmp2 | |
| 29 | .endm | |
| 30 | ||
| 31 | @ this macro checks which interrupt occured | |
| 32 | @ and returns its number in irqnr | |
| 33 | @ and returns if an interrupt occured in irqstat | |
| 34 | .macro get_irqnr_and_base, irqnr, irqstat, base, tmp | |
| 52c543f9 QJ |
35 | @ Load offset & priority of the highest priority |
| 36 | @ interrupt pending from AVIC_NIVECSR | |
| 37 | ldr \irqstat, [\base, #0x40] | |
| 38 | @ Shift to get the decoded IRQ number, using ASR so | |
| 39 | @ 'no interrupt pending' becomes 0xffffffff | |
| 40 | mov \irqnr, \irqstat, asr #16 | |
| 41 | @ set zero flag if IRQ + 1 == 0 | |
| 42 | adds \tmp, \irqnr, #1 | |
| 479c901f DA |
43 | #ifdef CONFIG_MXC_IRQ_PRIOR |
| 44 | bicne \tmp, \irqstat, #0xFFFFFFE0 | |
| 45 | strne \tmp, [\base, #AVIC_NIMASK] | |
| 46 | streq r4, [\base, #AVIC_NIMASK] | |
| 47 | #endif | |
| 52c543f9 QJ |
48 | .endm |
| 49 | ||
| 50 | @ irq priority table (not used) | |
| 51 | .macro irq_prio_table | |
| 52 | .endm |