1 /*- 2 * SPDX-License-Identifier: BSD-4-Clause 3 * 4 * Copyright (c) 2002 David E. O'Brien. All rights reserved. 5 * Copyright (c) 1992, 1993 6 * The Regents of the University of California. All rights reserved. 7 * 8 * This code is derived from software contributed to Berkeley by 9 * the Systems Programming Group of the University of Utah Computer 10 * Science Department and Ralph Campbell. 11 * 12 * Redistribution and use in source and binary forms, with or without 13 * modification, are permitted provided that the following conditions 14 * are met: 15 * 1. Redistributions of source code must retain the above copyright 16 * notice, this list of conditions and the following disclaimer. 17 * 2. Redistributions in binary form must reproduce the above copyright 18 * notice, this list of conditions and the following disclaimer in the 19 * documentation and/or other materials provided with the distribution. 20 * 3. All advertising materials mentioning features or use of this software 21 * must display the following acknowledgement: 22 * This product includes software developed by the University of 23 * California, Berkeley and its contributors. 24 * 4. Neither the name of the University nor the names of its contributors 25 * may be used to endorse or promote products derived from this software 26 * without specific prior written permission. 27 * 28 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND 29 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 30 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 31 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE 32 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 33 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 34 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 35 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 36 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 37 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 38 * SUCH DAMAGE. 39 * 40 * @(#)param.h 8.1 (Berkeley) 6/10/93 41 * $FreeBSD$ 42 */ 43 44 #ifndef _AMD64_INCLUDE_PARAM_H_ 45 #define _AMD64_INCLUDE_PARAM_H_ 46 47 #include <machine/_align.h> 48 49 /* 50 * Machine dependent constants for AMD64. 51 */ 52 53 #define __HAVE_ACPI 54 #define __PCI_REROUTE_INTERRUPT 55 56 #ifndef MACHINE 57 #define MACHINE "amd64" 58 #endif 59 #ifndef MACHINE_ARCH 60 #define MACHINE_ARCH "amd64" 61 #endif 62 #ifndef MACHINE_ARCH32 63 #define MACHINE_ARCH32 "i386" 64 #endif 65 66 #ifdef SMP 67 #ifndef MAXCPU 68 #define MAXCPU 256 69 #endif 70 #else 71 #define MAXCPU 1 72 #endif 73 74 #ifndef MAXMEMDOM 75 #define MAXMEMDOM 8 76 #endif 77 78 #define ALIGNBYTES _ALIGNBYTES 79 #define ALIGN(p) _ALIGN(p) 80 /* 81 * ALIGNED_POINTER is a boolean macro that checks whether an address 82 * is valid to fetch data elements of type t from on this architecture. 83 * This does not reflect the optimal alignment, just the possibility 84 * (within reasonable limits). 85 */ 86 #define ALIGNED_POINTER(p, t) 1 87 88 /* 89 * CACHE_LINE_SIZE is the compile-time maximum cache line size for an 90 * architecture. It should be used with appropriate caution. 91 */ 92 #define CACHE_LINE_SHIFT 6 93 #define CACHE_LINE_SIZE (1 << CACHE_LINE_SHIFT) 94 95 /* Size of the level 1 page table units */ 96 #define NPTEPG (PAGE_SIZE/(sizeof (pt_entry_t))) 97 #define NPTEPGSHIFT 9 /* LOG2(NPTEPG) */ 98 #define PAGE_SHIFT 12 /* LOG2(PAGE_SIZE) */ 99 #define PAGE_SIZE (1<<PAGE_SHIFT) /* bytes/page */ 100 #define PAGE_MASK (PAGE_SIZE-1) 101 /* Size of the level 2 page directory units */ 102 #define NPDEPG (PAGE_SIZE/(sizeof (pd_entry_t))) 103 #define NPDEPGSHIFT 9 /* LOG2(NPDEPG) */ 104 #define PDRSHIFT 21 /* LOG2(NBPDR) */ 105 #define NBPDR (1<<PDRSHIFT) /* bytes/page dir */ 106 #define PDRMASK (NBPDR-1) 107 /* Size of the level 3 page directory pointer table units */ 108 #define NPDPEPG (PAGE_SIZE/(sizeof (pdp_entry_t))) 109 #define NPDPEPGSHIFT 9 /* LOG2(NPDPEPG) */ 110 #define PDPSHIFT 30 /* LOG2(NBPDP) */ 111 #define NBPDP (1<<PDPSHIFT) /* bytes/page dir ptr table */ 112 #define PDPMASK (NBPDP-1) 113 /* Size of the level 4 page-map level-4 table units */ 114 #define NPML4EPG (PAGE_SIZE/(sizeof (pml4_entry_t))) 115 #define NPML4EPGSHIFT 9 /* LOG2(NPML4EPG) */ 116 #define PML4SHIFT 39 /* LOG2(NBPML4) */ 117 #define NBPML4 (1UL<<PML4SHIFT)/* bytes/page map lev4 table */ 118 #define PML4MASK (NBPML4-1) 119 /* Size of the level 5 page-map level-5 table units */ 120 #define NPML5EPG (PAGE_SIZE/(sizeof (pml5_entry_t))) 121 #define NPML5EPGSHIFT 9 /* LOG2(NPML5EPG) */ 122 #define PML5SHIFT 48 /* LOG2(NBPML5) */ 123 #define NBPML5 (1UL<<PML5SHIFT)/* bytes/page map lev5 table */ 124 #define PML5MASK (NBPML5-1) 125 126 #define MAXPAGESIZES 3 /* maximum number of supported page sizes */ 127 128 #define IOPAGES 2 /* pages of i/o permission bitmap */ 129 /* 130 * I/O permission bitmap has a bit for each I/O port plus an additional 131 * byte at the end with all bits set. See section "I/O Permission Bit Map" 132 * in the Intel SDM for more details. 133 */ 134 #define IOPERM_BITMAP_SIZE (IOPAGES * PAGE_SIZE + 1) 135 136 #ifndef KSTACK_PAGES 137 #if defined(KASAN) || defined(KMSAN) 138 #define KSTACK_PAGES 6 139 #else 140 #define KSTACK_PAGES 4 /* pages of kstack (with pcb) */ 141 #endif 142 #endif 143 #define KSTACK_GUARD_PAGES 1 /* pages of kstack guard; 0 disables */ 144 145 /* 146 * Mach derived conversion macros 147 */ 148 #define round_page(x) ((((unsigned long)(x)) + PAGE_MASK) & ~(PAGE_MASK)) 149 #define trunc_page(x) ((unsigned long)(x) & ~(PAGE_MASK)) 150 #define trunc_2mpage(x) ((unsigned long)(x) & ~PDRMASK) 151 #define round_2mpage(x) ((((unsigned long)(x)) + PDRMASK) & ~PDRMASK) 152 #define trunc_1gpage(x) ((unsigned long)(x) & ~PDPMASK) 153 154 #define atop(x) ((unsigned long)(x) >> PAGE_SHIFT) 155 #define ptoa(x) ((unsigned long)(x) << PAGE_SHIFT) 156 157 #define amd64_btop(x) ((unsigned long)(x) >> PAGE_SHIFT) 158 #define amd64_ptob(x) ((unsigned long)(x) << PAGE_SHIFT) 159 160 #define pgtok(x) ((unsigned long)(x) * (PAGE_SIZE / 1024)) 161 162 #define INKERNEL(va) (((va) >= DMAP_MIN_ADDRESS && (va) < DMAP_MAX_ADDRESS) \ 163 || ((va) >= VM_MIN_KERNEL_ADDRESS && (va) < VM_MAX_KERNEL_ADDRESS)) 164 165 #ifdef SMP 166 #define SC_TABLESIZE 1024 /* Must be power of 2. */ 167 #endif 168 169 #endif /* !_AMD64_INCLUDE_PARAM_H_ */ 170