| ############################################################################### |
| # |
| # MN10300 Watchdog interrupt handler |
| # |
| # Copyright (C) 2007 Red Hat, Inc. All Rights Reserved. |
| # Written by David Howells (dhowells@redhat.com) |
| # |
| # This program is free software; you can redistribute it and/or |
| # modify it under the terms of the GNU General Public Licence |
| # as published by the Free Software Foundation; either version |
| # 2 of the Licence, or (at your option) any later version. |
| # |
| ############################################################################### |
| #include <linux/sys.h> |
| #include <linux/linkage.h> |
| #include <asm/intctl-regs.h> |
| #include <asm/timer-regs.h> |
| #include <asm/frame.inc> |
| #include <linux/threads.h> |
| |
| .text |
| |
| ############################################################################### |
| # |
| # Watchdog handler entry point |
| # - special non-maskable interrupt |
| # |
| ############################################################################### |
| .globl watchdog_handler |
| .type watchdog_handler,@function |
| watchdog_handler: |
| add -4,sp |
| SAVE_ALL |
| |
| mov 0xffffffff,d0 |
| mov d0,(REG_ORIG_D0,fp) |
| |
| mov fp,d0 |
| lsr 2,d1 |
| call watchdog_interrupt[],0 # watchdog_interrupt(regs,irq) |
| |
| jmp ret_from_intr |
| |
| .size watchdog_handler,.-watchdog_handler |
| |
| ############################################################################### |
| # |
| # Watchdog touch entry point |
| # - kept to absolute minimum (unfortunately, it's prototyped in linux/nmi.h so |
| # we can't inline it) |
| # |
| ############################################################################### |
| .globl arch_touch_nmi_watchdog |
| .type arch_touch_nmi_watchdog,@function |
| arch_touch_nmi_watchdog: |
| clr d0 |
| clr d1 |
| mov watchdog_alert_counter, a0 |
| setlb |
| mov d0, (a0+) |
| inc d1 |
| cmp NR_CPUS, d1 |
| lne |
| ret [],0 |
| |
| .size arch_touch_nmi_watchdog,.-arch_touch_nmi_watchdog |
