tte.h revision 80709
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 80709 2001-07-31 06:05:05Z jake $ 30 */ 31 32#ifndef _MACHINE_TTE_H_ 33#define _MACHINE_TTE_H_ 34 35#include <machine/atomic.h> 36 37#define TTE_SHIFT 4 38#define STTE_SHIFT 5 39 40#define TT_CTX_SHIFT (48) 41#define TT_VA_SHIFT (22) 42#define TT_VPN_SHIFT (9) 43 44#define TT_CTX_SIZE (13) 45#define TT_VA_SIZE (42) 46 47#define TT_CTX_MASK ((1L << TT_CTX_SIZE) - 1) 48#define TT_VA_MASK ((1L << TT_VA_SIZE) - 1) 49 50#define TT_G (1L << 63) 51#define TT_CTX(ctx) (((u_long)(ctx) << TT_CTX_SHIFT) & TT_CTX_MASK) 52#define TT_VA(va) (((u_long)(va) >> TT_VA_SHIFT) & TT_VA_MASK) 53 54#define TD_SIZE_SHIFT (61) 55#define TD_SOFT2_SHIFT (50) 56#define TD_DIAG_SHIFT (41) 57#define TD_PA_SHIFT (13) 58#define TD_SOFT_SHIFT (7) 59 60#define TD_SIZE_SIZE (2) 61#define TD_SOFT2_SIZE (9) 62#define TD_DIAG_SIZE (9) 63#define TD_PA_SIZE (28) 64#define TD_SOFT_SIZE (6) 65 66#define TD_SIZE_MASK (((1L << TD_SIZE_SIZE) - 1) << TD_SIZE_SHIFT) 67#define TD_SOFT2_MASK (((1L << TD_SOFT2_SIZE) - 1) << TD_SOFT2_SHIFT) 68#define TD_DIAG_MASK (((1L << TD_DIAG_SIZE) - 1) << TD_DIAG_SHIFT) 69#define TD_PA_MASK (((1L << TD_PA_SIZE) - 1) << TD_PA_SHIFT) 70#define TD_SOFT_MASK (((1L << TD_SOFT_SIZE) - 1) << TD_SOFT_SHIFT) 71 72#define TD_VA_LOW_SHIFT TD_SOFT2_SHIFT 73#define TD_VA_LOW_MASK TD_SOFT2_MASK 74 75#define TS_EXEC (1L << 3) 76#define TS_MOD (1L << 2) 77#define TS_REF (1L << 1) 78#define TS_TSB (1L << 0) 79 80#define TD_V (1L << 63) 81#define TD_8K (0L << TD_SIZE_SHIFT) 82#define TD_64K (1L << TD_SIZE_SHIFT) 83#define TD_512K (2L << TD_SIZE_SHIFT) 84#define TD_4M (3L << TD_SIZE_SHIFT) 85#define TD_NFO (1L << 60) 86#define TD_IE (1L << 59) 87#define TD_VPN_LOW(vpn) ((vpn << TD_SOFT2_SHIFT) & TD_SOFT2_MASK) 88#define TD_VA_LOW(va) (TD_VPN_LOW((va) >> PAGE_SHIFT)) 89#define TD_PA(pa) ((pa) & TD_PA_MASK) 90#define TD_EXEC (TS_EXEC << TD_SOFT_SHIFT) 91#define TD_MOD (TS_MOD << TD_SOFT_SHIFT) 92#define TD_REF (TS_REF << TD_SOFT_SHIFT) 93#define TD_TSB (TS_TSB << TD_SOFT_SHIFT) 94#define TD_L (1L << 6) 95#define TD_CP (1L << 5) 96#define TD_CV (1L << 4) 97#define TD_E (1L << 3) 98#define TD_P (1L << 2) 99#define TD_W (1L << 1) 100#define TD_G (1L << 0) 101 102struct tte { 103 u_long tte_tag; 104 u_long tte_data; 105}; 106 107struct stte { 108 struct tte st_tte; 109 vm_offset_t st_next; 110 vm_offset_t st_prev; 111}; 112 113static __inline u_int 114tte_get_ctx(struct tte tte) 115{ 116 return ((tte.tte_tag & TT_CTX_MASK) >> TT_CTX_SHIFT); 117} 118 119static __inline vm_offset_t 120tte_get_vpn(struct tte tte) 121{ 122 return (((tte.tte_tag & TT_VA_MASK) << TT_VPN_SHIFT) | 123 ((tte.tte_data & TD_VA_LOW_MASK) >> TD_VA_LOW_SHIFT)); 124} 125 126static __inline vm_offset_t 127tte_get_va(struct tte tte) 128{ 129 return (tte_get_vpn(tte) << PAGE_SHIFT); 130} 131 132static __inline void 133tte_invalidate(struct tte *tp) 134{ 135 atomic_clear_long(&tp->tte_data, TD_V); 136} 137 138static __inline int 139tte_match(struct tte tte, vm_offset_t va) 140{ 141 return ((tte.tte_data & TD_V) != 0 && 142 ((tte.tte_tag ^ TT_VA(va)) & TT_VA_MASK) == 0 && 143 ((tte.tte_data ^ TD_VA_LOW(va)) & TD_VA_LOW_MASK) == 0); 144} 145 146#endif /* !_MACHINE_TTE_H_ */ 147