projects / linux-2.6-block.git / blame
| Commit | Line | Data |
|---|---|---|
| b920de1b DH |
1 | ############################################################################### |
| 2 | # | |
| 3 | # MN10300 Watchdog interrupt handler | |
| 4 | # | |
| 5 | # Copyright (C) 2007 Red Hat, Inc. All Rights Reserved. | |
| 6 | # Written by David Howells (dhowells@redhat.com) | |
| 7 | # | |
| 8 | # This program is free software; you can redistribute it and/or | |
| 9 | # modify it under the terms of the GNU General Public Licence | |
| 10 | # as published by the Free Software Foundation; either version | |
| 11 | # 2 of the Licence, or (at your option) any later version. | |
| 12 | # | |
| 13 | ############################################################################### | |
| 14 | #include <linux/sys.h> | |
| 15 | #include <linux/linkage.h> | |
| 16 | #include <asm/intctl-regs.h> | |
| 17 | #include <asm/timer-regs.h> | |
| 18 | #include <asm/frame.inc> | |
| 368dd5ac | 19 | #include <linux/threads.h> |
| b920de1b DH |
20 | |
| 21 | .text | |
| 22 | ||
| 23 | ############################################################################### | |
| 24 | # | |
| 25 | # Watchdog handler entry point | |
| 26 | # - special non-maskable interrupt | |
| 27 | # | |
| 28 | ############################################################################### | |
| 29 | .globl watchdog_handler | |
| 30 | .type watchdog_handler,@function | |
| 31 | watchdog_handler: | |
| 32 | add -4,sp | |
| 33 | SAVE_ALL | |
| 34 | ||
| 35 | mov 0xffffffff,d0 | |
| 36 | mov d0,(REG_ORIG_D0,fp) | |
| 37 | ||
| 38 | mov fp,d0 | |
| 39 | lsr 2,d1 | |
| 40 | call watchdog_interrupt[],0 # watchdog_interrupt(regs,irq) | |
| 41 | ||
| 42 | jmp ret_from_intr | |
| 43 | ||
| 44 | .size watchdog_handler,.-watchdog_handler | |
| 45 | ||
| 46 | ############################################################################### | |
| 47 | # | |
| 48 | # Watchdog touch entry point | |
| 49 | # - kept to absolute minimum (unfortunately, it's prototyped in linux/nmi.h so | |
| 50 | # we can't inline it) | |
| 51 | # | |
| 52 | ############################################################################### | |
| 53 | .globl touch_nmi_watchdog | |
| 54 | .type touch_nmi_watchdog,@function | |
| 55 | touch_nmi_watchdog: | |
| 56 | clr d0 | |
| 368dd5ac AT |
57 | clr d1 |
| 58 | mov watchdog_alert_counter, a0 | |
| 59 | setlb | |
| 60 | mov d0, (a0+) | |
| 61 | inc d1 | |
| 62 | cmp NR_CPUS, d1 | |
| 63 | lne | |
| b920de1b DH |
64 | ret [],0 |
| 65 | ||
| 66 | .size touch_nmi_watchdog,.-touch_nmi_watchdog |