tte.h revision 88652
1/*- 2 * Copyright (c) 1997 Berkeley Software Design, Inc. All rights reserved. 3 * 4 * Redistribution and use in source and binary forms, with or without 5 * modification, are permitted provided that the following conditions 6 * are met: 7 * 1. Redistributions of source code must retain the above copyright 8 * notice, this list of conditions and the following disclaimer. 9 * 2. Redistributions in binary form must reproduce the above copyright 10 * notice, this list of conditions and the following disclaimer in the 11 * documentation and/or other materials provided with the distribution. 12 * 3. Berkeley Software Design Inc's name may not be used to endorse or 13 * promote products derived from this software without specific prior 14 * written permission. 15 * 16 * THIS SOFTWARE IS PROVIDED BY BERKELEY SOFTWARE DESIGN INC ``AS IS'' AND 17 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 18 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 19 * ARE DISCLAIMED. IN NO EVENT SHALL BERKELEY SOFTWARE DESIGN INC BE LIABLE 20 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 21 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 22 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 23 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 24 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 25 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 26 * SUCH DAMAGE. 27 * 28 * from: BSDI: pmap.v9.h,v 1.10.2.6 1999/08/23 22:18:44 cp Exp 29 * $FreeBSD: head/sys/sparc64/include/tte.h 88652 2001-12-29 08:24:02Z jake $ 30 */ 31 32#ifndef _MACHINE_TTE_H_ 33#define _MACHINE_TTE_H_ 34 35#define TTE_SHIFT (4) 36 37#define TT_CTX_SHIFT (48) 38#define TT_VA_SHIFT (22) 39#define TT_VPN_SHIFT (9) 40 41#define TT_CTX_SIZE (13) 42#define TT_VA_SIZE (42) 43 44#define TT_CTX_MASK ((1UL << TT_CTX_SIZE) - 1) 45#define TT_VA_MASK ((1UL << TT_VA_SIZE) - 1) 46 47#define TT_G (1UL << 63) 48#define TT_CTX(ctx) (((u_long)(ctx) & TT_CTX_MASK) << TT_CTX_SHIFT) 49#define TT_VA(va) ((u_long)(va) >> TT_VA_SHIFT) 50 51#define TD_SIZE_SHIFT (61) 52#define TD_SOFT2_SHIFT (50) 53#define TD_DIAG_SHIFT (41) 54#define TD_PA_SHIFT (13) 55#define TD_SOFT_SHIFT (7) 56 57#define TD_SIZE_SIZE (2) 58#define TD_SOFT2_SIZE (9) 59#define TD_DIAG_SIZE (9) 60#define TD_PA_SIZE (28) 61#define TD_SOFT_SIZE (6) 62 63#define TD_SIZE_MASK (((1UL << TD_SIZE_SIZE) - 1) << TD_SIZE_SHIFT) 64#define TD_SOFT2_MASK (((1UL << TD_SOFT2_SIZE) - 1) << TD_SOFT2_SHIFT) 65#define TD_DIAG_MASK (((1UL << TD_DIAG_SIZE) - 1) << TD_DIAG_SHIFT) 66#define TD_PA_MASK (((1UL << TD_PA_SIZE) - 1) << TD_PA_SHIFT) 67#define TD_SOFT_MASK (((1UL << TD_SOFT_SIZE) - 1) << TD_SOFT_SHIFT) 68 69#define TD_VA_LOW_SHIFT TD_SOFT2_SHIFT 70#define TD_VA_LOW_MASK TD_SOFT2_MASK 71 72#define TS_EXEC (1UL << 4) 73#define TS_REF (1UL << 3) 74#define TS_PV (1UL << 2) 75#define TS_W (1UL << 1) 76#define TS_WIRED (1UL << 0) 77 78#define TD_V (1UL << 63) 79#define TD_8K (0UL << TD_SIZE_SHIFT) 80#define TD_64K (1UL << TD_SIZE_SHIFT) 81#define TD_512K (2UL << TD_SIZE_SHIFT) 82#define TD_4M (3UL << TD_SIZE_SHIFT) 83#define TD_NFO (1UL << 60) 84#define TD_IE (1UL << 59) 85#define TD_VPN_LOW(vpn) ((vpn << TD_SOFT2_SHIFT) & TD_SOFT2_MASK) 86#define TD_VA_LOW(va) (TD_VPN_LOW((va) >> PAGE_SHIFT)) 87#define TD_PA(pa) ((pa) & TD_PA_MASK) 88#define TD_EXEC (TS_EXEC << TD_SOFT_SHIFT) 89#define TD_REF (TS_REF << TD_SOFT_SHIFT) 90#define TD_PV (TS_PV << TD_SOFT_SHIFT) 91#define TD_SW (TS_W << TD_SOFT_SHIFT) 92#define TD_WIRED (TS_WIRED << TD_SOFT_SHIFT) 93#define TD_L (1UL << 6) 94#define TD_CP (1UL << 5) 95#define TD_CV (1UL << 4) 96#define TD_E (1UL << 3) 97#define TD_P (1UL << 2) 98#define TD_W (1UL << 1) 99#define TD_G (1UL << 0) 100 101#define TT_GET_CTX(tag) (((tag) >> TT_CTX_SHIFT) & TT_CTX_MASK) 102#define TD_GET_SIZE(d) (((d) >> TD_SIZE_SHIFT) & 3) 103#define TD_GET_PA(d) ((d) & TD_PA_MASK) 104 105struct tte { 106 u_long tte_tag; 107 u_long tte_data; 108}; 109 110static __inline vm_offset_t 111tte_get_vpn(struct tte tte) 112{ 113 return (((tte.tte_tag & TT_VA_MASK) << TT_VPN_SHIFT) | 114 ((tte.tte_data & TD_VA_LOW_MASK) >> TD_VA_LOW_SHIFT)); 115} 116 117static __inline vm_offset_t 118tte_get_va(struct tte tte) 119{ 120 return (tte_get_vpn(tte) << PAGE_SHIFT); 121} 122 123static __inline int 124tte_match(struct tte tte, vm_offset_t va) 125{ 126 return ((tte.tte_data & TD_V) != 0 && 127 ((tte.tte_tag ^ TT_VA(va)) & TT_VA_MASK) == 0 && 128 ((tte.tte_data ^ TD_VA_LOW(va)) & TD_VA_LOW_MASK) == 0); 129} 130 131#endif /* !_MACHINE_TTE_H_ */ 132