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