| David Howells | b920de1 | 2008-02-08 04:19:31 -0800 | [diff] [blame] | 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> |
| Akira Takeuchi | 368dd5a | 2010-10-27 17:28:55 +0100 | [diff] [blame] | 19 | #include <linux/threads.h> |
| David Howells | b920de1 | 2008-02-08 04:19:31 -0800 | [diff] [blame] | 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 |
| Akira Takeuchi | 368dd5a | 2010-10-27 17:28:55 +0100 | [diff] [blame] | 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 |
| David Howells | b920de1 | 2008-02-08 04:19:31 -0800 | [diff] [blame] | 64 | ret [],0 |
| 65 | |
| 66 | .size touch_nmi_watchdog,.-touch_nmi_watchdog |