text: /* $OpenBSD: pci_sgmap_pte64.h,v 1.3 2001/03/21 17:26:39 art Exp $ */
  /* $NetBSD: pci_sgmap_pte64.h,v 1.2 1997/06/06 23:59:29 thorpej Exp $ */
  
  /*-
   * Copyright (c) 1997 The NetBSD Foundation, Inc.
   * All rights reserved.
   *
   * This code is derived from software contributed to The NetBSD Foundation
   * by Jason R. Thorpe of the Numerical Aerospace Simulation Facility,
   * NASA Ames Research Center.
   *
   * Redistribution and use in source and binary forms, with or without
   * modification, are permitted provided that the following conditions
   * are met:
   * 1. Redistributions of source code must retain the above copyright
   *    notice, this list of conditions and the following disclaimer.
   * 2. Redistributions in binary form must reproduce the above copyright
   *    notice, this list of conditions and the following disclaimer in the
   *    documentation and/or other materials provided with the distribution.
   * 3. All advertising materials mentioning features or use of this software
   *    must display the following acknowledgement:
   *	This product includes software developed by the NetBSD
   *	Foundation, Inc. and its contributors.
   * 4. Neither the name of The NetBSD Foundation nor the names of its
   *    contributors may be used to endorse or promote products derived
   *    from this software without specific prior written permission.
   *
   * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS
   * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
   * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
   * PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS
   * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
   * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
   * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
   * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
   * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
   * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
   * POSSIBILITY OF SUCH DAMAGE.
   */
  
  #define	SGMAP_TYPE		pci_sgmap_pte64
  #define	SGMAP_PTE_TYPE		u_int64_t
  #define	SGMAP_PTE_SPACING	1
  
  /*
   * A 64-bit PCI SGMAP page table entry looks like this:
   *
   * 63                           n+1 n             1   0
   * |                               | Page address | V |
   *
   * The page address is bits <n:13> of the physical address of the
   * page.  The V bit is set if the PTE holds a valid mapping. 
   */
  #define SGPTE_PGADDR_SHIFT      12
  #define SGPTE_VALID             0x0000000000000001UL
  
  #include <alpha/dev/sgmapvar.h>
  #include <alpha/dev/sgmap_typedep.h>
  