Annotation of sys/arch/alpha/tc/tc_sgmap.h, Revision 1.1
1.1 ! nbrk 1: /* $OpenBSD: tc_sgmap.h,v 1.1 2002/05/02 22:56:06 miod 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: * 3. All advertising materials mentioning features or use of this software
! 21: * must display the following acknowledgement:
! 22: * This product includes software developed by the NetBSD
! 23: * Foundation, Inc. and its contributors.
! 24: * 4. Neither the name of The NetBSD Foundation nor the names of its
! 25: * contributors may be used to endorse or promote products derived
! 26: * from this software without specific prior written permission.
! 27: *
! 28: * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS
! 29: * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
! 30: * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
! 31: * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS
! 32: * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
! 33: * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
! 34: * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
! 35: * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
! 36: * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
! 37: * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
! 38: * POSSIBILITY OF SUCH DAMAGE.
! 39: */
! 40:
! 41: #define SGMAP_TYPE tc_sgmap
! 42: #define SGMAP_PTE_TYPE u_int32_t
! 43: #define SGMAP_PTE_SPACING 2
! 44:
! 45: /*
! 46: * A TurboChannel SGMAP page table entry looks like this:
! 47: *
! 48: * 31 23 22 21 20 4 3 0
! 49: * | Discarded | V | F | P | Page address | UNP |
! 50: *
! 51: * The page address is bits <29:13> of the physical address of the
! 52: * page. The V bit is set if the PTE holds a valid mapping.
! 53: * The F (funny) bit forces a parity error. The P bit is a
! 54: * hardware-generated parity bit.
! 55: */
! 56: #define SGPTE_PGADDR_SHIFT 9
! 57: #define SGPTE_VALID 0x00800000
! 58:
! 59: #include <alpha/dev/sgmapvar.h>
! 60: #include <alpha/dev/sgmap_typedep.h>
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