sys/arch/alpha/include/pio.h

   1 /*      $NetBSD: pio.h,v 1.6 2001/01/07 03:59:31 thorpej Exp $  */
   2
   3 /*-
   4  * Copyright (c) 2000 The NetBSD Foundation, Inc.
   5  * All rights reserved.
   6  *
   7  * This code is derived from software contributed to The NetBSD Foundation
   8  * by Jason R. Thorpe.
   9  *
  10  * Redistribution and use in source and binary forms, with or without
  11  * modification, are permitted provided that the following conditions
  12  * are met:
  13  * 1. Redistributions of source code must retain the above copyright
  14  *    notice, this list of conditions and the following disclaimer.
  15  * 2. Redistributions in binary form must reproduce the above copyright
  16  *    notice, this list of conditions and the following disclaimer in the
  17  *    documentation and/or other materials provided with the distribution.
  18  *
  19  * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS
  20  * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
  21  * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
  22  * PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS
  23  * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
  24  * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
  25  * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
  26  * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
  27  * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
  28  * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
  29  * POSSIBILITY OF SUCH DAMAGE.
  30  */
  31
  32 #ifndef _ALPHA_PIO_H_
  33 #define _ALPHA_PIO_H_
  34
  35 #include <sys/cdefs.h>
  36 #include <machine/bus.h>
  37
  38 #ifdef _KERNEL
  39 #error This file is for userspace only.
  40 #else
  41 struct alpha_pci_io_ops {
  42         u_int8_t        (*apio_inb)(bus_addr_t);
  43         u_int16_t       (*apio_inw)(bus_addr_t);
  44         u_int32_t       (*apio_inl)(bus_addr_t);
  45         void            (*apio_outb)(bus_addr_t, u_int8_t);
  46         void            (*apio_outw)(bus_addr_t, u_int16_t);
  47         void            (*apio_outl)(bus_addr_t, u_int32_t);
  48 };
  49
  50 #define inb(addr)       (*alpha_pci_io_switch->apio_inb)((addr))
  51 #define inw(addr)       (*alpha_pci_io_switch->apio_inw)((addr))
  52 #define inl(addr)       (*alpha_pci_io_switch->apio_inl)((addr))
  53
  54 #define outb(addr, val) (*alpha_pci_io_switch->apio_outb)((addr), (val))
  55 #define outw(addr, val) (*alpha_pci_io_switch->apio_outw)((addr), (val))
  56 #define outl(addr, val) (*alpha_pci_io_switch->apio_outl)((addr), (val))
  57
  58 __BEGIN_DECLS
  59 extern const struct alpha_pci_io_ops *alpha_pci_io_switch;
  60
  61 int     alpha_pci_io_enable(int);
  62 __END_DECLS
  63 #endif /* _KERNEL */
  64
  65 #endif /* _ALPHA_PIO_H_ */