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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 |