tc_sgmap.h revision 1.2.2.2
1 1.2.2.2 cgd /* $NetBSD: tc_sgmap.h,v 1.2.2.2 1997/06/07 04:43:47 cgd Exp $ */ 2 1.2.2.2 cgd 3 1.2.2.2 cgd /*- 4 1.2.2.2 cgd * Copyright (c) 1997 The NetBSD Foundation, Inc. 5 1.2.2.2 cgd * All rights reserved. 6 1.2.2.2 cgd * 7 1.2.2.2 cgd * This code is derived from software contributed to The NetBSD Foundation 8 1.2.2.2 cgd * by Jason R. Thorpe of the Numerical Aerospace Simulation Facility, 9 1.2.2.2 cgd * NASA Ames Research Center. 10 1.2.2.2 cgd * 11 1.2.2.2 cgd * Redistribution and use in source and binary forms, with or without 12 1.2.2.2 cgd * modification, are permitted provided that the following conditions 13 1.2.2.2 cgd * are met: 14 1.2.2.2 cgd * 1. Redistributions of source code must retain the above copyright 15 1.2.2.2 cgd * notice, this list of conditions and the following disclaimer. 16 1.2.2.2 cgd * 2. Redistributions in binary form must reproduce the above copyright 17 1.2.2.2 cgd * notice, this list of conditions and the following disclaimer in the 18 1.2.2.2 cgd * documentation and/or other materials provided with the distribution. 19 1.2.2.2 cgd * 3. All advertising materials mentioning features or use of this software 20 1.2.2.2 cgd * must display the following acknowledgement: 21 1.2.2.2 cgd * This product includes software developed by the NetBSD 22 1.2.2.2 cgd * Foundation, Inc. and its contributors. 23 1.2.2.2 cgd * 4. Neither the name of The NetBSD Foundation nor the names of its 24 1.2.2.2 cgd * contributors may be used to endorse or promote products derived 25 1.2.2.2 cgd * from this software without specific prior written permission. 26 1.2.2.2 cgd * 27 1.2.2.2 cgd * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS 28 1.2.2.2 cgd * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED 29 1.2.2.2 cgd * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR 30 1.2.2.2 cgd * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS 31 1.2.2.2 cgd * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR 32 1.2.2.2 cgd * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF 33 1.2.2.2 cgd * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS 34 1.2.2.2 cgd * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN 35 1.2.2.2 cgd * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) 36 1.2.2.2 cgd * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE 37 1.2.2.2 cgd * POSSIBILITY OF SUCH DAMAGE. 38 1.2.2.2 cgd */ 39 1.2.2.2 cgd 40 1.2.2.2 cgd #define SGMAP_TYPE tc_sgmap 41 1.2.2.2 cgd #define SGMAP_PTE_TYPE u_int32_t 42 1.2.2.2 cgd #define SGMAP_PTE_SPACING 2 43 1.2.2.2 cgd 44 1.2.2.2 cgd /* 45 1.2.2.2 cgd * A TurboChannel SGMAP page table entry looks like this: 46 1.2.2.2 cgd * 47 1.2.2.2 cgd * 31 23 22 21 20 4 3 0 48 1.2.2.2 cgd * | Discarded | V | F | P | Page address | UNP | 49 1.2.2.2 cgd * 50 1.2.2.2 cgd * The page address is bits <29:13> of the physical address of the 51 1.2.2.2 cgd * page. The V bit is set if the PTE holds a valid mapping. 52 1.2.2.2 cgd * The F (funny) bit forces a parity error. The P bit is a 53 1.2.2.2 cgd * hardware-generated parity bit. 54 1.2.2.2 cgd */ 55 1.2.2.2 cgd #define SGPTE_PGADDR_SHIFT 9 56 1.2.2.2 cgd #define SGPTE_VALID 0x00800000 57 1.2.2.2 cgd 58 1.2.2.2 cgd #include <alpha/common/sgmapvar.h> 59 1.2.2.2 cgd #include <alpha/common/sgmap_typedep.h> 60
Indexes created Thu Oct 23 22:10:10 GMT 2025