1*199767f8SToomas Soome /*- 2*199767f8SToomas Soome * Copyright (c) 1990 The Regents of the University of California. 3*199767f8SToomas Soome * All rights reserved. 4*199767f8SToomas Soome * 5*199767f8SToomas Soome * This code is derived from software contributed to Berkeley by 6*199767f8SToomas Soome * William Jolitz. 7*199767f8SToomas Soome * 8*199767f8SToomas Soome * Redistribution and use in source and binary forms, with or without 9*199767f8SToomas Soome * modification, are permitted provided that the following conditions 10*199767f8SToomas Soome * are met: 11*199767f8SToomas Soome * 1. Redistributions of source code must retain the above copyright 12*199767f8SToomas Soome * notice, this list of conditions and the following disclaimer. 13*199767f8SToomas Soome * 2. Redistributions in binary form must reproduce the above copyright 14*199767f8SToomas Soome * notice, this list of conditions and the following disclaimer in the 15*199767f8SToomas Soome * documentation and/or other materials provided with the distribution. 16*199767f8SToomas Soome * 4. Neither the name of the University nor the names of its contributors 17*199767f8SToomas Soome * may be used to endorse or promote products derived from this software 18*199767f8SToomas Soome * without specific prior written permission. 19*199767f8SToomas Soome * 20*199767f8SToomas Soome * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND 21*199767f8SToomas Soome * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 22*199767f8SToomas Soome * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 23*199767f8SToomas Soome * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE 24*199767f8SToomas Soome * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 25*199767f8SToomas Soome * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 26*199767f8SToomas Soome * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 27*199767f8SToomas Soome * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 28*199767f8SToomas Soome * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 29*199767f8SToomas Soome * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 30*199767f8SToomas Soome * SUCH DAMAGE. 31*199767f8SToomas Soome * 32*199767f8SToomas Soome * from: @(#)param.h 5.8 (Berkeley) 6/28/91 33*199767f8SToomas Soome * $FreeBSD$ 34*199767f8SToomas Soome */ 35*199767f8SToomas Soome 36*199767f8SToomas Soome 37*199767f8SToomas Soome #ifndef _I386_INCLUDE_PARAM_H_ 38*199767f8SToomas Soome #define _I386_INCLUDE_PARAM_H_ 39*199767f8SToomas Soome 40*199767f8SToomas Soome #include <machine/_align.h> 41*199767f8SToomas Soome 42*199767f8SToomas Soome /* 43*199767f8SToomas Soome * Machine dependent constants for Intel 386. 44*199767f8SToomas Soome */ 45*199767f8SToomas Soome 46*199767f8SToomas Soome 47*199767f8SToomas Soome #define __HAVE_ACPI 48*199767f8SToomas Soome #define __HAVE_PIR 49*199767f8SToomas Soome #define __PCI_REROUTE_INTERRUPT 50*199767f8SToomas Soome 51*199767f8SToomas Soome #ifndef MACHINE 52*199767f8SToomas Soome #define MACHINE "i386" 53*199767f8SToomas Soome #endif 54*199767f8SToomas Soome #ifndef MACHINE_ARCH 55*199767f8SToomas Soome #define MACHINE_ARCH "i386" 56*199767f8SToomas Soome #endif 57*199767f8SToomas Soome #define MID_MACHINE MID_I386 58*199767f8SToomas Soome 59*199767f8SToomas Soome #if defined(SMP) || defined(KLD_MODULE) 60*199767f8SToomas Soome #ifndef MAXCPU 61*199767f8SToomas Soome #define MAXCPU 32 62*199767f8SToomas Soome #endif 63*199767f8SToomas Soome #else 64*199767f8SToomas Soome #define MAXCPU 1 65*199767f8SToomas Soome #endif /* SMP || KLD_MODULE */ 66*199767f8SToomas Soome 67*199767f8SToomas Soome #ifndef MAXMEMDOM 68*199767f8SToomas Soome #define MAXMEMDOM 1 69*199767f8SToomas Soome #endif 70*199767f8SToomas Soome 71*199767f8SToomas Soome #define ALIGNBYTES _ALIGNBYTES 72*199767f8SToomas Soome #define ALIGN(p) _ALIGN(p) 73*199767f8SToomas Soome /* 74*199767f8SToomas Soome * ALIGNED_POINTER is a boolean macro that checks whether an address 75*199767f8SToomas Soome * is valid to fetch data elements of type t from on this architecture. 76*199767f8SToomas Soome * This does not reflect the optimal alignment, just the possibility 77*199767f8SToomas Soome * (within reasonable limits). 78*199767f8SToomas Soome */ 79*199767f8SToomas Soome #define ALIGNED_POINTER(p, t) 1 80*199767f8SToomas Soome 81*199767f8SToomas Soome /* 82*199767f8SToomas Soome * CACHE_LINE_SIZE is the compile-time maximum cache line size for an 83*199767f8SToomas Soome * architecture. It should be used with appropriate caution. 84*199767f8SToomas Soome */ 85*199767f8SToomas Soome #define CACHE_LINE_SHIFT 7 86*199767f8SToomas Soome #define CACHE_LINE_SIZE (1 << CACHE_LINE_SHIFT) 87*199767f8SToomas Soome 88*199767f8SToomas Soome #define PAGE_SHIFT 12 /* LOG2(PAGE_SIZE) */ 89*199767f8SToomas Soome #define PAGE_SIZE (1<<PAGE_SHIFT) /* bytes/page */ 90*199767f8SToomas Soome #define PAGE_MASK (PAGE_SIZE-1) 91*199767f8SToomas Soome #define NPTEPG (PAGE_SIZE/(sizeof (pt_entry_t))) 92*199767f8SToomas Soome 93*199767f8SToomas Soome #if defined(PAE) || defined(PAE_TABLES) 94*199767f8SToomas Soome #define NPGPTD 4 95*199767f8SToomas Soome #define PDRSHIFT 21 /* LOG2(NBPDR) */ 96*199767f8SToomas Soome #define NPGPTD_SHIFT 9 97*199767f8SToomas Soome #else 98*199767f8SToomas Soome #define NPGPTD 1 99*199767f8SToomas Soome #define PDRSHIFT 22 /* LOG2(NBPDR) */ 100*199767f8SToomas Soome #define NPGPTD_SHIFT 10 101*199767f8SToomas Soome #endif 102*199767f8SToomas Soome 103*199767f8SToomas Soome #define NBPTD (NPGPTD<<PAGE_SHIFT) 104*199767f8SToomas Soome #define NPDEPTD (NBPTD/(sizeof (pd_entry_t))) 105*199767f8SToomas Soome #define NPDEPG (PAGE_SIZE/(sizeof (pd_entry_t))) 106*199767f8SToomas Soome #define NBPDR (1<<PDRSHIFT) /* bytes/page dir */ 107*199767f8SToomas Soome #define PDRMASK (NBPDR-1) 108*199767f8SToomas Soome 109*199767f8SToomas Soome #define MAXPAGESIZES 2 /* maximum number of supported page sizes */ 110*199767f8SToomas Soome 111*199767f8SToomas Soome #define IOPAGES 2 /* pages of i/o permission bitmap */ 112*199767f8SToomas Soome 113*199767f8SToomas Soome #ifndef KSTACK_PAGES 114*199767f8SToomas Soome #define KSTACK_PAGES 2 /* Includes pcb! */ 115*199767f8SToomas Soome #endif 116*199767f8SToomas Soome #define KSTACK_GUARD_PAGES 1 /* pages of kstack guard; 0 disables */ 117*199767f8SToomas Soome #if KSTACK_PAGES < 4 118*199767f8SToomas Soome #define TD0_KSTACK_PAGES 4 119*199767f8SToomas Soome #else 120*199767f8SToomas Soome #define TD0_KSTACK_PAGES KSTACK_PAGES 121*199767f8SToomas Soome #endif 122*199767f8SToomas Soome 123*199767f8SToomas Soome /* 124*199767f8SToomas Soome * Ceiling on amount of swblock kva space, can be changed via 125*199767f8SToomas Soome * the kern.maxswzone /boot/loader.conf variable. 126*199767f8SToomas Soome * 127*199767f8SToomas Soome * 276 is sizeof(struct swblock), but we do not always have a definition 128*199767f8SToomas Soome * in scope for struct swblock, so we have to hardcode it. Each struct 129*199767f8SToomas Soome * swblock holds metadata for 32 pages, so in theory, this is enough for 130*199767f8SToomas Soome * 16 GB of swap. In practice, however, the usable amount is considerably 131*199767f8SToomas Soome * lower due to fragmentation. 132*199767f8SToomas Soome */ 133*199767f8SToomas Soome #ifndef VM_SWZONE_SIZE_MAX 134*199767f8SToomas Soome #define VM_SWZONE_SIZE_MAX (276 * 128 * 1024) 135*199767f8SToomas Soome #endif 136*199767f8SToomas Soome 137*199767f8SToomas Soome /* 138*199767f8SToomas Soome * Ceiling on size of buffer cache (really only effects write queueing, 139*199767f8SToomas Soome * the VM page cache is not effected), can be changed via 140*199767f8SToomas Soome * the kern.maxbcache /boot/loader.conf variable. 141*199767f8SToomas Soome * 142*199767f8SToomas Soome * The value is equal to the size of the auto-tuned buffer map for 143*199767f8SToomas Soome * the machine with 4GB of RAM, see vfs_bio.c:kern_vfs_bio_buffer_alloc(). 144*199767f8SToomas Soome */ 145*199767f8SToomas Soome #ifndef VM_BCACHE_SIZE_MAX 146*199767f8SToomas Soome #define VM_BCACHE_SIZE_MAX (7224 * 16 * 1024) 147*199767f8SToomas Soome #endif 148*199767f8SToomas Soome 149*199767f8SToomas Soome /* 150*199767f8SToomas Soome * Mach derived conversion macros 151*199767f8SToomas Soome */ 152*199767f8SToomas Soome #define trunc_page(x) ((x) & ~PAGE_MASK) 153*199767f8SToomas Soome #define round_page(x) (((x) + PAGE_MASK) & ~PAGE_MASK) 154*199767f8SToomas Soome #define trunc_4mpage(x) ((x) & ~PDRMASK) 155*199767f8SToomas Soome #define round_4mpage(x) ((((x)) + PDRMASK) & ~PDRMASK) 156*199767f8SToomas Soome 157*199767f8SToomas Soome #define atop(x) ((x) >> PAGE_SHIFT) 158*199767f8SToomas Soome #define ptoa(x) ((x) << PAGE_SHIFT) 159*199767f8SToomas Soome 160*199767f8SToomas Soome #define i386_btop(x) ((x) >> PAGE_SHIFT) 161*199767f8SToomas Soome #define i386_ptob(x) ((x) << PAGE_SHIFT) 162*199767f8SToomas Soome 163*199767f8SToomas Soome #define pgtok(x) ((x) * (PAGE_SIZE / 1024)) 164*199767f8SToomas Soome 165*199767f8SToomas Soome #define INKERNEL(va) (((vm_offset_t)(va)) >= VM_MAXUSER_ADDRESS && \ 166*199767f8SToomas Soome ((vm_offset_t)(va)) < VM_MAX_KERNEL_ADDRESS) 167*199767f8SToomas Soome 168*199767f8SToomas Soome #endif /* !_I386_INCLUDE_PARAM_H_ */ 169