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> 19#include <linux/threads.h> 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 31watchdog_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 55touch_nmi_watchdog: 56 clr d0 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 64 ret [],0 65 66 .size touch_nmi_watchdog,.-touch_nmi_watchdog 67