tte.h revision 112697
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 112697 2003-03-27 02:16:31Z jake $ 30 */ 31 32#ifndef _MACHINE_TTE_H_ 33#define _MACHINE_TTE_H_ 34 35#define TTE_SHIFT (5) 36 37#define TD_SIZE_SHIFT (61) 38#define TD_SOFT2_SHIFT (50) 39#define TD_DIAG_SHIFT (41) 40#define TD_PA_SHIFT (13) 41#define TD_SOFT_SHIFT (7) 42 43#define TD_SIZE_BITS (2) 44#define TD_SOFT2_BITS (9) 45#define TD_DIAG_BITS (9) 46#define TD_PA_BITS (28) 47#define TD_SOFT_BITS (6) 48 49#define TD_SIZE_MASK ((1UL << TD_SIZE_BITS) - 1) 50#define TD_SOFT2_MASK ((1UL << TD_SOFT2_BITS) - 1) 51#define TD_DIAG_MASK ((1UL << TD_DIAG_BITS) - 1) 52#define TD_PA_MASK ((1UL << TD_PA_BITS) - 1) 53#define TD_SOFT_MASK ((1UL << TD_SOFT_BITS) - 1) 54 55#define TS_8K (0UL) 56#define TS_64K (1UL) 57#define TS_512K (2UL) 58#define TS_4M (3UL) 59 60#define TS_MIN TS_8K 61#define TS_MAX TS_4M 62 63#define TD_V (1UL << 63) 64#define TD_8K (TS_8K << TD_SIZE_SHIFT) 65#define TD_64K (TS_64K << TD_SIZE_SHIFT) 66#define TD_512K (TS_512K << TD_SIZE_SHIFT) 67#define TD_4M (TS_4M << TD_SIZE_SHIFT) 68#define TD_NFO (1UL << 60) 69#define TD_IE (1UL << 59) 70#define TD_PA(pa) ((pa) & (TD_PA_MASK << TD_PA_SHIFT)) 71/* NOTE: bit 6 of TD_SOFT will be sign-extended if used as an immediate. */ 72#define TD_FAKE ((1UL << 5) << TD_SOFT_SHIFT) 73#define TD_EXEC ((1UL << 4) << TD_SOFT_SHIFT) 74#define TD_REF ((1UL << 3) << TD_SOFT_SHIFT) 75#define TD_PV ((1UL << 2) << TD_SOFT_SHIFT) 76#define TD_SW ((1UL << 1) << TD_SOFT_SHIFT) 77#define TD_WIRED ((1UL << 0) << TD_SOFT_SHIFT) 78#define TD_L (1UL << 6) 79#define TD_CP (1UL << 5) 80#define TD_CV (1UL << 4) 81#define TD_E (1UL << 3) 82#define TD_P (1UL << 2) 83#define TD_W (1UL << 1) 84#define TD_G (1UL << 0) 85 86#define TV_SIZE_BITS (TD_SIZE_BITS) 87#define TV_VPN(va, sz) ((((va) >> TTE_PAGE_SHIFT(sz)) << TV_SIZE_BITS) | sz) 88 89#define TTE_SIZE_SPREAD (3) 90#define TTE_PAGE_SHIFT(sz) \ 91 (PAGE_SHIFT + ((sz) * TTE_SIZE_SPREAD)) 92 93#define TTE_GET_SIZE(tp) \ 94 (((tp)->tte_data >> TD_SIZE_SHIFT) & TD_SIZE_MASK) 95#define TTE_GET_PAGE_SHIFT(tp) \ 96 TTE_PAGE_SHIFT(TTE_GET_SIZE(tp)) 97#define TTE_GET_PAGE_SIZE(tp) \ 98 (1 << TTE_GET_PAGE_SHIFT(tp)) 99#define TTE_GET_PAGE_MASK(tp) \ 100 (TTE_GET_PAGE_SIZE(tp) - 1) 101 102#define TTE_GET_PA(tp) \ 103 ((tp)->tte_data & (TD_PA_MASK << TD_PA_SHIFT)) 104#define TTE_GET_VPN(tp) \ 105 ((tp)->tte_vpn >> TV_SIZE_BITS) 106#define TTE_GET_VA(tp) \ 107 (TTE_GET_VPN(tp) << TTE_GET_PAGE_SHIFT(tp)) 108#define TTE_GET_PMAP(tp) \ 109 (((tp)->tte_data & TD_P) != 0 ? \ 110 (kernel_pmap) : \ 111 (PHYS_TO_VM_PAGE(pmap_kextract((vm_offset_t)(tp)))->md.pmap)) 112#define TTE_ZERO(tp) \ 113 memset(tp, 0, sizeof(*tp)) 114 115struct pmap; 116 117struct tte { 118 u_long tte_vpn; 119 u_long tte_data; 120 TAILQ_ENTRY(tte) tte_link; 121}; 122 123static __inline int 124tte_match(struct tte *tp, vm_offset_t va) 125{ 126 return (((tp->tte_data & TD_V) != 0) && 127 (tp->tte_vpn == TV_VPN(va, TTE_GET_SIZE(tp)))); 128} 129 130#endif /* !_MACHINE_TTE_H_ */ 131