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pci_sgmap_pte32.h revision 1.4.38.1 
      1  1.4.38.1      mrg /* $NetBSD: pci_sgmap_pte32.h,v 1.4.38.1 2012/02/18 07:31:06 mrg Exp $ */
      2       1.2  thorpej 
      3       1.2  thorpej /*-
      4       1.2  thorpej  * Copyright (c) 1997 The NetBSD Foundation, Inc.
      5       1.2  thorpej  * All rights reserved.
      6       1.2  thorpej  *
      7       1.2  thorpej  * This code is derived from software contributed to The NetBSD Foundation
      8       1.2  thorpej  * by Jason R. Thorpe of the Numerical Aerospace Simulation Facility,
      9       1.2  thorpej  * NASA Ames Research Center.
     10       1.2  thorpej  *
     11       1.2  thorpej  * Redistribution and use in source and binary forms, with or without
     12       1.2  thorpej  * modification, are permitted provided that the following conditions
     13       1.2  thorpej  * are met:
     14       1.2  thorpej  * 1. Redistributions of source code must retain the above copyright
     15       1.2  thorpej  *    notice, this list of conditions and the following disclaimer.
     16       1.2  thorpej  * 2. Redistributions in binary form must reproduce the above copyright
     17       1.2  thorpej  *    notice, this list of conditions and the following disclaimer in the
     18       1.2  thorpej  *    documentation and/or other materials provided with the distribution.
     19       1.2  thorpej  *
     20       1.2  thorpej  * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS
     21       1.2  thorpej  * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
     22       1.2  thorpej  * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
     23       1.2  thorpej  * PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS
     24       1.2  thorpej  * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
     25       1.2  thorpej  * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
     26       1.2  thorpej  * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
     27       1.2  thorpej  * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
     28       1.2  thorpej  * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
     29       1.2  thorpej  * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
     30       1.2  thorpej  * POSSIBILITY OF SUCH DAMAGE.
     31       1.2  thorpej  */
     32       1.2  thorpej 
     33       1.2  thorpej #define	SGMAP_TYPE		pci_sgmap_pte32
     34  1.4.38.1      mrg #define	SGMAP_PTE_TYPE		uint32_t
     35       1.3   mjacob #define	SGMAP_PTE_SPACING	0x20
     36       1.2  thorpej 
     37       1.2  thorpej /*
     38       1.2  thorpej  * A 32-bit PCI SGMAP page table entry looks like this:
     39       1.2  thorpej  *
     40       1.2  thorpej  * 31                           n+1 n             1   0
     41       1.2  thorpej  * |                               | Page address | V |
     42       1.2  thorpej  *
     43       1.2  thorpej  * The page address is bits <n:13> of the physical address of the
     44       1.2  thorpej  * page.  The V bit is set if the PTE holds a valid mapping.
     45       1.2  thorpej  */
     46       1.2  thorpej #define	SGPTE_PGADDR_SHIFT	12
     47       1.2  thorpej #define	SGPTE_VALID		0x00000001
     48       1.2  thorpej 
     49       1.2  thorpej #include <alpha/common/sgmapvar.h>
     50       1.2  thorpej #include <alpha/common/sgmap_typedep.h>
     51