sys/platform/pc64/apic/ioapic_abi.h

   1 /*
   2  * Copyright (c) 1991 The Regents of the University of California.
   3  * Copyright (c) 1996, by Steve Passe.  All rights reserved.
   4  * Copyright (c) 2005,2008 The DragonFly Project.  All rights reserved.
   5  * All rights reserved.
   6  *
   7  * This code is derived from software contributed to The DragonFly Project
   8  * by Matthew Dillon <dillon@backplane.com>
   9  *
  10  * This code is derived from software contributed to Berkeley by
  11  * William Jolitz.
  12  *
  13  * Redistribution and use in source and binary forms, with or without
  14  * modification, are permitted provided that the following conditions
  15  * are met:
  16  *
  17  * 1. Redistributions of source code must retain the above copyright
  18  *    notice, this list of conditions and the following disclaimer.
  19  * 2. Redistributions in binary form must reproduce the above copyright
  20  *    notice, this list of conditions and the following disclaimer in
  21  *    the documentation and/or other materials provided with the
  22  *    distribution.
  23  * 3. Neither the name of The DragonFly Project nor the names of its
  24  *    contributors may be used to endorse or promote products derived
  25  *    from this software without specific, prior written permission.
  26  *
  27  * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
  28  * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
  29  * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
  30  * FOR A PARTICULAR PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL THE
  31  * COPYRIGHT HOLDERS OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
  32  * INCIDENTAL, SPECIAL, EXEMPLARY OR CONSEQUENTIAL DAMAGES (INCLUDING,
  33  * BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
  34  * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED
  35  * AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
  36  * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT
  37  * OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
  38  * SUCH DAMAGE.
  39  */
  40
  41 #ifndef _ARCH_APIC_IOAPIC_ABI_H_
  42 #define _ARCH_APIC_IOAPIC_ABI_H_
  43
  44 #ifndef _SYS_BUS_H_
  45 #include <sys/bus.h>
  46 #endif
  47
  48 /*
  49  * NOTE:
  50  * - Keep size of ioapic_irqinfo power of 2
  51  * - Update IOAPIC_IRQI_SZSHIFT after changing ioapic_irqinfo size
  52  */
  53 struct ioapic_irqinfo {
  54         uint32_t        io_flags;       /* IOAPIC_IRQI_FLAG_ */
  55         int             io_idx;
  56         volatile void   *io_addr;
  57 };
  58 #define IOAPIC_IRQI_SZSHIFT     4
  59
  60 #define IOAPIC_IRQI_FLAG_LEVEL  0x1     /* default to edge trigger */
  61 #define IOAPIC_IRQI_FLAG_MASKED 0x2
  62
  63 extern struct ioapic_irqinfo    ioapic_irqs[];
  64
  65 extern struct machintr_abi MachIntrABI_IOAPIC;
  66
  67 int     ioapic_conf_legacy_extint(int);
  68 void    ioapic_set_legacy_irqmap(int, int, enum intr_trigger,
  69             enum intr_polarity);
  70 void    ioapic_fixup_legacy_irqmaps(void);
  71
  72 #endif  /* !_ARCH_APIC_IOAPIC_ABI_H_ */