arch/mn10300/include/asm/hardirq.h

   1 /* 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 */
  20 typedef 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
  29 extern 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  */
  36 typedef 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  */
  45 extern asmlinkage void set_excp_vector(enum exception_code code,
  46                                        intr_stub_fnx handler);
  47
  48 #endif /* _ASM_HARDIRQ_H */