1 /* 2 * Copyright (c) 2018 The NetBSD Foundation, Inc. All rights reserved. 3 * 4 * This code is derived from software contributed to The NetBSD Foundation 5 * by Maxime Villard. 6 * 7 * Redistribution and use in source and binary forms, with or without 8 * modification, are permitted provided that the following conditions 9 * are met: 10 * 1. Redistributions of source code must retain the above copyright 11 * notice, this list of conditions and the following disclaimer. 12 * 2. Redistributions in binary form must reproduce the above copyright 13 * notice, this list of conditions and the following disclaimer in the 14 * documentation and/or other materials provided with the distribution. 15 * 16 * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS 17 * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED 18 * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR 19 * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS 20 * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR 21 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF 22 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS 23 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN 24 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) 25 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE 26 * POSSIBILITY OF SUCH DAMAGE. 27 */ 28 29 #ifndef PDIR_H_ 30 #define PDIR_H_ 31 32 #ifndef PAGE_SIZE 33 #define PAGE_SIZE 4096 34 #endif 35 #define PDE_SIZE 8 36 #define FRAMESIZE 8 37 38 #ifdef __DragonFly__ 39 #define PGSHIFT 12 40 #define NBPG (1 << PGSHIFT) /* bytes/page */ 41 #define PGOFSET (NBPG - 1) /* byte offset into page */ 42 #define USPACE (UPAGES * NBPG) /* total size of u-area */ 43 #endif /* __DragonFly__ */ 44 45 #define IOM_BEGIN 0x0a0000 /* Start of I/O Memory "hole" */ 46 #define IOM_END 0x100000 /* End of I/O Memory "hole" */ 47 #define IOM_SIZE (IOM_END - IOM_BEGIN) 48 49 #define SMALLKERNBASE 0x0 50 #define SMALLKERNTEXTOFF (SMALLKERNBASE + 0x100000) 51 52 #define L4_SLOT_SMALLKERN 0 53 #define L4_SLOT_PTE 255 54 55 #define PDIR_SLOT_KERN L4_SLOT_SMALLKERN 56 #define PDIR_SLOT_PTE L4_SLOT_PTE 57 58 #define PTE_BASE ((pt_entry_t *)(L4_SLOT_PTE * NBPD_L4)) 59 60 #define L1_BASE PTE_BASE 61 #define L2_BASE ((pd_entry_t *)((char *)L1_BASE + L4_SLOT_PTE * NBPD_L3)) 62 #define L3_BASE ((pd_entry_t *)((char *)L2_BASE + L4_SLOT_PTE * NBPD_L2)) 63 #define L4_BASE ((pd_entry_t *)((char *)L3_BASE + L4_SLOT_PTE * NBPD_L1)) 64 65 #define PDP_BASE L4_BASE 66 67 #define NKL4_MAX_ENTRIES (unsigned long)1 68 #define NKL3_MAX_ENTRIES (unsigned long)(NKL4_MAX_ENTRIES * 512) 69 #define NKL2_MAX_ENTRIES (unsigned long)(NKL3_MAX_ENTRIES * 512) 70 #define NKL1_MAX_ENTRIES (unsigned long)(NKL2_MAX_ENTRIES * 512) 71 72 #define NKL4_KIMG_ENTRIES 1 73 #define NKL3_KIMG_ENTRIES 1 74 #define NKL2_KIMG_ENTRIES 32 75 76 #define L1_SHIFT 12 77 #define L2_SHIFT 21 78 #define L3_SHIFT 30 79 #define L4_SHIFT 39 80 #define NBPD_L1 (1UL << L1_SHIFT) /* # bytes mapped by L1 ent (4K) */ 81 #define NBPD_L2 (1UL << L2_SHIFT) /* # bytes mapped by L2 ent (2MB) */ 82 #define NBPD_L3 (1UL << L3_SHIFT) /* # bytes mapped by L3 ent (1G) */ 83 #define NBPD_L4 (1UL << L4_SHIFT) /* # bytes mapped by L4 ent (512G) */ 84 85 #define L4_MASK 0x0000ff8000000000 86 #define L3_MASK 0x0000007fc0000000 87 #define L2_MASK 0x000000003fe00000 88 #define L1_MASK 0x00000000001ff000 89 90 #define L4_FRAME L4_MASK 91 #define L3_FRAME (L4_FRAME|L3_MASK) 92 #define L2_FRAME (L3_FRAME|L2_MASK) 93 #define L1_FRAME (L2_FRAME|L1_MASK) 94 95 #define pl1_i(va) (((va) & L1_FRAME) >> L1_SHIFT) 96 #define pl2_i(va) (((va) & L2_FRAME) >> L2_SHIFT) 97 #define pl3_i(va) (((va) & L3_FRAME) >> L3_SHIFT) 98 #define pl4_i(va) (((va) & L4_FRAME) >> L4_SHIFT) 99 100 #endif /* !PDIR_H_ */ 101