/* $OpenBSD: param.h,v 1.17 2010/11/29 00:06:04 dlg Exp $ */ /*- * 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. * 3. 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. * * @(#)param.h 5.8 (Berkeley) 6/28/91 */ #ifdef _KERNEL #ifdef _LOCORE #include #else #include #endif #endif #define _MACHINE amd64 #define MACHINE "amd64" #define _MACHINE_ARCH amd64 #define MACHINE_ARCH "amd64" #define MID_MACHINE MID_AMD64 /* * Round p (pointer or byte index) up to a correctly-aligned value * for all data types (int, long, ...). The result is u_long and * must be cast to any desired pointer type. * * 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 ALIGNBYTES (sizeof(long) - 1) #define ALIGN(p) (((u_long)(p) + ALIGNBYTES) &~ALIGNBYTES) #define ALIGNED_POINTER(p,t) 1 #define PGSHIFT 12 /* LOG2(NBPG) */ #define NBPG (1 << PGSHIFT) /* bytes/page */ #define PGOFSET (NBPG-1) /* byte offset into page */ #define PAGE_SHIFT 12 #define PAGE_SIZE (1 << PAGE_SHIFT) #define PAGE_MASK (PAGE_SIZE - 1) #define NPTEPG (NBPG/(sizeof (pt_entry_t))) #define KERNBASE 0xffffffff80000000 /* start of kernel virtual space */ #define KERNTEXTOFF (KERNBASE+0x100000) /* start of kernel text */ #define KERNTEXTOFF_HI 0xffffffff #define KERNTEXTOFF_LO 0x80100000 #define KERNBASE_HI 0xffffffff #define KERNBASE_LO 0x80000000 #define DEV_BSHIFT 9 /* log2(DEV_BSIZE) */ #define DEV_BSIZE (1 << DEV_BSHIFT) #define BLKDEV_IOSIZE 2048 #ifndef MAXPHYS #define MAXPHYS (64 * 1024) /* max raw I/O transfer size */ #endif #define UPAGES 5 /* pages of u-area */ #define USPACE (UPAGES * NBPG) /* total size of u-area */ #define USPACE_ALIGN (0) /* u-area alignment 0-none */ #ifndef MSGBUFSIZE #define MSGBUFSIZE 16*NBPG /* default message buffer size */ #endif /* * Constants related to network buffer management. */ #define NMBCLUSTERS 6144 /* map size, max cluster allocation */ /* * Minimum and maximum sizes of the kernel malloc arena in PAGE_SIZE-sized * logical pages. */ #define NKMEMPAGES_MIN_DEFAULT ((8 * 1024 * 1024) >> PAGE_SHIFT) #define NKMEMPAGES_MAX_DEFAULT ((128 * 1024 * 1024) >> PAGE_SHIFT) /* pages ("clicks") to disk blocks */ #define ctod(x) ((x) << (PGSHIFT - DEV_BSHIFT)) #define dtoc(x) ((x) >> (PGSHIFT - DEV_BSHIFT)) /* bytes to disk blocks */ #define dbtob(x) ((x) << DEV_BSHIFT) #define btodb(x) ((x) >> DEV_BSHIFT) /* * Mach derived conversion macros */ #define x86_round_pdr(x) \ ((((unsigned long)(x)) + (NBPD_L2 - 1)) & ~(NBPD_L2 - 1)) #define x86_trunc_pdr(x) ((unsigned long)(x) & ~(NBPD_L2 - 1))