1 /* $OpenBSD: tc_sgmap.h,v 1.2 2008/06/26 05:42:09 ray Exp $ */ 2 /* $NetBSD: tc_sgmap.h,v 1.2 1997/06/07 00:02:20 thorpej Exp $ */ 3 4 /*- 5 * Copyright (c) 1997 The NetBSD Foundation, Inc. 6 * All rights reserved. 7 * 8 * This code is derived from software contributed to The NetBSD Foundation 9 * by Jason R. Thorpe of the Numerical Aerospace Simulation Facility, 10 * NASA Ames Research Center. 11 * 12 * Redistribution and use in source and binary forms, with or without 13 * modification, are permitted provided that the following conditions 14 * are met: 15 * 1. Redistributions of source code must retain the above copyright 16 * notice, this list of conditions and the following disclaimer. 17 * 2. Redistributions in binary form must reproduce the above copyright 18 * notice, this list of conditions and the following disclaimer in the 19 * documentation and/or other materials provided with the distribution. 20 * 21 * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS 22 * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED 23 * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR 24 * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS 25 * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR 26 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF 27 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS 28 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN 29 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) 30 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE 31 * POSSIBILITY OF SUCH DAMAGE. 32 */ 33 34 #define SGMAP_TYPE tc_sgmap 35 #define SGMAP_PTE_TYPE u_int32_t 36 #define SGMAP_PTE_SPACING 2 37 38 /* 39 * A TurboChannel SGMAP page table entry looks like this: 40 * 41 * 31 23 22 21 20 4 3 0 42 * | Discarded | V | F | P | Page address | UNP | 43 * 44 * The page address is bits <29:13> of the physical address of the 45 * page. The V bit is set if the PTE holds a valid mapping. 46 * The F (funny) bit forces a parity error. The P bit is a 47 * hardware-generated parity bit. 48 */ 49 #define SGPTE_PGADDR_SHIFT 9 50 #define SGPTE_VALID 0x00800000 51 52 #include <alpha/dev/sgmapvar.h> 53 #include <alpha/dev/sgmap_typedep.h> 54