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David Howellsb920de12008-02-08 04:19:31 -08001/* MN10300 Hardware IRQ statistics and management
2 *
3 * Copyright (C) 2007 Matsushita Electric Industrial Co., Ltd.
4 * Copyright (C) 2007 Red Hat, Inc. All Rights Reserved.
5 * Modified by David Howells (dhowells@redhat.com)
6 *
7 * This program is free software; you can redistribute it and/or
8 * modify it under the terms of the GNU General Public Licence
9 * as published by the Free Software Foundation; either version
10 * 2 of the Licence, or (at your option) any later version.
11 */
12#ifndef _ASM_HARDIRQ_H
13#define _ASM_HARDIRQ_H
14
15#include <linux/threads.h>
16#include <linux/irq.h>
17#include <asm/exceptions.h>
18
19/* assembly code in softirq.h is sensitive to the offsets of these fields */
20typedef struct {
21 unsigned int __softirq_pending;
22 unsigned long idle_timestamp;
23 unsigned int __nmi_count; /* arch dependent */
24 unsigned int __irq_count; /* arch dependent */
25} ____cacheline_aligned irq_cpustat_t;
26
27#include <linux/irq_cpustat.h> /* Standard mappings for irq_cpustat_t above */
28
29extern void ack_bad_irq(int irq);
30
31/*
32 * manipulate stubs in the MN10300 CPU Trap/Interrupt Vector table
33 * - these should jump to __common_exception in entry.S unless there's a good
34 * reason to do otherwise (see trap_preinit() in traps.c)
35 */
36typedef void (*intr_stub_fnx)(struct pt_regs *regs,
37 enum exception_code intcode);
38
39/*
40 * manipulate pointers in the Exception table (see entry.S)
41 * - these are indexed by decoding the lower 24 bits of the TBR register
42 * - note that the MN103E010 doesn't always trap through the correct vector,
43 * but does always set the TBR correctly
44 */
45extern asmlinkage void set_excp_vector(enum exception_code code,
46 intr_stub_fnx handler);
47
48#endif /* _ASM_HARDIRQ_H */