pdir.h revision 1.3.2.2
1 1.3.2.2 jdolecek /* $NetBSD: pdir.h,v 1.3.2.2 2017/12/03 11:35:48 jdolecek Exp $ */ 2 1.3.2.2 jdolecek 3 1.3.2.2 jdolecek /* 4 1.3.2.2 jdolecek * Copyright (c) 2017 The NetBSD Foundation, Inc. All rights reserved. 5 1.3.2.2 jdolecek * 6 1.3.2.2 jdolecek * This code is derived from software contributed to The NetBSD Foundation 7 1.3.2.2 jdolecek * by Maxime Villard. 8 1.3.2.2 jdolecek * 9 1.3.2.2 jdolecek * Redistribution and use in source and binary forms, with or without 10 1.3.2.2 jdolecek * modification, are permitted provided that the following conditions 11 1.3.2.2 jdolecek * are met: 12 1.3.2.2 jdolecek * 1. Redistributions of source code must retain the above copyright 13 1.3.2.2 jdolecek * notice, this list of conditions and the following disclaimer. 14 1.3.2.2 jdolecek * 2. Redistributions in binary form must reproduce the above copyright 15 1.3.2.2 jdolecek * notice, this list of conditions and the following disclaimer in the 16 1.3.2.2 jdolecek * documentation and/or other materials provided with the distribution. 17 1.3.2.2 jdolecek * 18 1.3.2.2 jdolecek * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS 19 1.3.2.2 jdolecek * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED 20 1.3.2.2 jdolecek * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR 21 1.3.2.2 jdolecek * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS 22 1.3.2.2 jdolecek * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR 23 1.3.2.2 jdolecek * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF 24 1.3.2.2 jdolecek * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS 25 1.3.2.2 jdolecek * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN 26 1.3.2.2 jdolecek * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) 27 1.3.2.2 jdolecek * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE 28 1.3.2.2 jdolecek * POSSIBILITY OF SUCH DAMAGE. 29 1.3.2.2 jdolecek */ 30 1.3.2.2 jdolecek 31 1.3.2.2 jdolecek #define PREKERNBASE 0x0 32 1.3.2.2 jdolecek #define PREKERNTEXTOFF (PREKERNBASE + 0x100000) 33 1.3.2.2 jdolecek 34 1.3.2.2 jdolecek #define L4_SLOT_PREKERN 0 /* pl4_i(PREKERNBASE) */ 35 1.3.2.2 jdolecek #define L4_SLOT_PTE 255 36 1.3.2.2 jdolecek 37 1.3.2.2 jdolecek #define PDIR_SLOT_KERN L4_SLOT_PREKERN 38 1.3.2.2 jdolecek #define PDIR_SLOT_PTE L4_SLOT_PTE 39 1.3.2.2 jdolecek 40 1.3.2.2 jdolecek #define PTE_BASE ((pt_entry_t *)(L4_SLOT_PTE * NBPD_L4)) 41 1.3.2.2 jdolecek 42 1.3.2.2 jdolecek #define L1_BASE PTE_BASE 43 1.3.2.2 jdolecek #define L2_BASE ((pd_entry_t *)((char *)L1_BASE + L4_SLOT_PTE * NBPD_L3)) 44 1.3.2.2 jdolecek #define L3_BASE ((pd_entry_t *)((char *)L2_BASE + L4_SLOT_PTE * NBPD_L2)) 45 1.3.2.2 jdolecek #define L4_BASE ((pd_entry_t *)((char *)L3_BASE + L4_SLOT_PTE * NBPD_L1)) 46 1.3.2.2 jdolecek 47 1.3.2.2 jdolecek #define NKL4_KIMG_ENTRIES 1 48 1.3.2.2 jdolecek #define NKL3_KIMG_ENTRIES 1 49 1.3.2.2 jdolecek #define NKL2_KIMG_ENTRIES 32 50 1.3.2.2 jdolecek 51 1.3.2.2 jdolecek /* 52 1.3.2.2 jdolecek * Now we define various constants for playing with virtual addresses. 53 1.3.2.2 jdolecek */ 54 1.3.2.2 jdolecek #define L1_SHIFT 12 55 1.3.2.2 jdolecek #define L2_SHIFT 21 56 1.3.2.2 jdolecek #define L3_SHIFT 30 57 1.3.2.2 jdolecek #define L4_SHIFT 39 58 1.3.2.2 jdolecek #define NBPD_L1 (1UL << L1_SHIFT) /* # bytes mapped by L1 ent (4K) */ 59 1.3.2.2 jdolecek #define NBPD_L2 (1UL << L2_SHIFT) /* # bytes mapped by L2 ent (2MB) */ 60 1.3.2.2 jdolecek #define NBPD_L3 (1UL << L3_SHIFT) /* # bytes mapped by L3 ent (1G) */ 61 1.3.2.2 jdolecek #define NBPD_L4 (1UL << L4_SHIFT) /* # bytes mapped by L4 ent (512G) */ 62 1.3.2.2 jdolecek 63 1.3.2.2 jdolecek #define L4_MASK 0x0000ff8000000000 64 1.3.2.2 jdolecek #define L3_MASK 0x0000007fc0000000 65 1.3.2.2 jdolecek #define L2_MASK 0x000000003fe00000 66 1.3.2.2 jdolecek #define L1_MASK 0x00000000001ff000 67 1.3.2.2 jdolecek 68 1.3.2.2 jdolecek #define L4_FRAME L4_MASK 69 1.3.2.2 jdolecek #define L3_FRAME (L4_FRAME|L3_MASK) 70 1.3.2.2 jdolecek #define L2_FRAME (L3_FRAME|L2_MASK) 71 1.3.2.2 jdolecek #define L1_FRAME (L2_FRAME|L1_MASK) 72 1.3.2.2 jdolecek 73 1.3.2.2 jdolecek /* 74 1.3.2.2 jdolecek * Mask to get rid of the sign-extended part of addresses. 75 1.3.2.2 jdolecek */ 76 1.3.2.2 jdolecek #define VA_SIGN_MASK 0xffff000000000000 77 1.3.2.2 jdolecek #define VA_SIGN_NEG(va) ((va) | VA_SIGN_MASK) 78 1.3.2.2 jdolecek /* XXXfvdl this one's not right */ 79 1.3.2.2 jdolecek #define VA_SIGN_POS(va) ((va) & ~VA_SIGN_MASK) 80 1.3.2.2 jdolecek 81 1.3.2.2 jdolecek /* 82 1.3.2.2 jdolecek * pl*_i: generate index into pde/pte arrays in virtual space 83 1.3.2.2 jdolecek * 84 1.3.2.2 jdolecek * pl_i(va, X) == plX_i(va) <= pl_i_roundup(va, X) 85 1.3.2.2 jdolecek */ 86 1.3.2.2 jdolecek #define pl1_i(VA) (((VA_SIGN_POS(VA)) & L1_FRAME) >> L1_SHIFT) 87 1.3.2.2 jdolecek #define pl2_i(VA) (((VA_SIGN_POS(VA)) & L2_FRAME) >> L2_SHIFT) 88 1.3.2.2 jdolecek #define pl3_i(VA) (((VA_SIGN_POS(VA)) & L3_FRAME) >> L3_SHIFT) 89 1.3.2.2 jdolecek #define pl4_i(VA) (((VA_SIGN_POS(VA)) & L4_FRAME) >> L4_SHIFT) 90 1.3.2.2 jdolecek 91
Indexes created Sun Oct 12 02:09:55 GMT 2025