| /*- |
| * Copyright (c) 1990 The Regents of the University of California. |
| * All rights reserved. |
| * |
| * This code is derived from software contributed to Berkeley by |
| * William Jolitz. |
| * |
| * Redistribution and use in source and binary forms, with or without |
| * modification, are permitted provided that the following conditions |
| * are met: |
| * 1. Redistributions of source code must retain the above copyright |
| * notice, this list of conditions and the following disclaimer. |
| * 2. Redistributions in binary form must reproduce the above copyright |
| * notice, this list of conditions and the following disclaimer in the |
| * documentation and/or other materials provided with the distribution. |
| * 4. Neither the name of the University nor the names of its contributors |
| * may be used to endorse or promote products derived from this software |
| * without specific prior written permission. |
| * |
| * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND |
| * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE |
| * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE |
| * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE |
| * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL |
| * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS |
| * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) |
| * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT |
| * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY |
| * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF |
| * SUCH DAMAGE. |
| * |
| * from: @(#)param.h 5.8 (Berkeley) 6/28/91 |
| * $FreeBSD$ |
| */ |
| |
| /* |
| * Machine dependent constants for Intel 386. |
| */ |
| |
| /* |
| * Round p (pointer or byte index) up to a correctly-aligned value |
| * for all data types (int, long, ...). The result is unsigned int |
| * and must be cast to any desired pointer type. |
| */ |
| #ifndef _ALIGNBYTES |
| #define _ALIGNBYTES (sizeof(int) - 1) |
| #endif |
| #ifndef _ALIGN |
| #define _ALIGN(p) (((unsigned)(p) + _ALIGNBYTES) & ~_ALIGNBYTES) |
| #endif |
| |
| #ifndef _NO_NAMESPACE_POLLUTION |
| |
| #define __HAVE_ACPI |
| #define __PCI_REROUTE_INTERRUPT |
| |
| #ifndef _BSD_MACHINE_PARAM_H_ |
| #define _BSD_MACHINE_PARAM_H_ |
| |
| #ifndef MACHINE |
| #define MACHINE "i386" |
| #endif |
| #ifndef MACHINE_ARCH |
| #define MACHINE_ARCH "i386" |
| #endif |
| #define MID_MACHINE MID_I386 |
| |
| #if defined(SMP) || defined(KLD_MODULE) |
| #define MAXCPU 32 |
| #else |
| #define MAXCPU 1 |
| #endif /* SMP || KLD_MODULE */ |
| |
| #define ALIGNBYTES _ALIGNBYTES |
| #define ALIGN(p) _ALIGN(p) |
| /* |
| * ALIGNED_POINTER is a boolean macro that checks whether an address |
| * is valid to fetch data elements of type t from on this architecture. |
| * This does not reflect the optimal alignment, just the possibility |
| * (within reasonable limits). |
| */ |
| #define ALIGNED_POINTER(p, t) 1 |
| |
| /* |
| * CACHE_LINE_SIZE is the compile-time maximum cache line size for an |
| * architecture. It should be used with appropriate caution. |
| */ |
| #define CACHE_LINE_SHIFT 7 |
| #define CACHE_LINE_SIZE (1 << CACHE_LINE_SHIFT) |
| |
| #define PAGE_SHIFT 12 /* LOG2(PAGE_SIZE) */ |
| #define PAGE_SIZE (1<<PAGE_SHIFT) /* bytes/page */ |
| #define PAGE_MASK (PAGE_SIZE-1) |
| #define NPTEPG (PAGE_SIZE/(sizeof (pt_entry_t))) |
| |
| #ifdef PAE |
| #define NPGPTD 4 |
| #define PDRSHIFT 21 /* LOG2(NBPDR) */ |
| #define NPGPTD_SHIFT 9 |
| #else |
| #define NPGPTD 1 |
| #define PDRSHIFT 22 /* LOG2(NBPDR) */ |
| #define NPGPTD_SHIFT 10 |
| #endif |
| |
| #define NBPTD (NPGPTD<<PAGE_SHIFT) |
| #define NPDEPTD (NBPTD/(sizeof (pd_entry_t))) |
| #define NPDEPG (PAGE_SIZE/(sizeof (pd_entry_t))) |
| #define NBPDR (1<<PDRSHIFT) /* bytes/page dir */ |
| #define PDRMASK (NBPDR-1) |
| |
| #define MAXPAGESIZES 2 /* maximum number of supported page sizes */ |
| |
| #define IOPAGES 2 /* pages of i/o permission bitmap */ |
| |
| #ifndef KSTACK_PAGES |
| #define KSTACK_PAGES 2 /* Includes pcb! */ |
| #endif |
| #define KSTACK_GUARD_PAGES 1 /* pages of kstack guard; 0 disables */ |
| |
| /* |
| * Ceiling on amount of swblock kva space, can be changed via |
| * the kern.maxswzone /boot/loader.conf variable. |
| */ |
| #ifndef VM_SWZONE_SIZE_MAX |
| #define VM_SWZONE_SIZE_MAX (32 * 1024 * 1024) |
| #endif |
| |
| /* |
| * Ceiling on size of buffer cache (really only effects write queueing, |
| * the VM page cache is not effected), can be changed via |
| * the kern.maxbcache /boot/loader.conf variable. |
| */ |
| #ifndef VM_BCACHE_SIZE_MAX |
| #define VM_BCACHE_SIZE_MAX (200 * 1024 * 1024) |
| #endif |
| |
| /* |
| * Mach derived conversion macros |
| */ |
| #define trunc_page(x) ((x) & ~PAGE_MASK) |
| #define round_page(x) (((x) + PAGE_MASK) & ~PAGE_MASK) |
| #define trunc_4mpage(x) ((x) & ~PDRMASK) |
| #define round_4mpage(x) ((((x)) + PDRMASK) & ~PDRMASK) |
| |
| #define atop(x) ((x) >> PAGE_SHIFT) |
| #define ptoa(x) ((x) << PAGE_SHIFT) |
| |
| #define i386_btop(x) ((x) >> PAGE_SHIFT) |
| #define i386_ptob(x) ((x) << PAGE_SHIFT) |
| |
| #define pgtok(x) ((x) * (PAGE_SIZE / 1024)) |
| |
| #endif /* !_BSD_MACHINE_PARAM_H_ */ |
| #endif /* !_NO_NAMESPACE_POLLUTION */ |