NetBSD-5.0.2/sys/arch/amd64/include/param.h
/* $NetBSD: param.h,v 1.9.4.1 2009/02/16 03:04:38 snj Exp $ */
#ifdef __x86_64__
#ifdef _KERNEL
#include <machine/cpu.h>
#endif
#define _MACHINE amd64
#define MACHINE "amd64"
#define _MACHINE_ARCH x86_64
#define MACHINE_ARCH "x86_64"
#define MID_MACHINE MID_X86_64
/*
* Round p (pointer or byte index) up to a correctly-aligned value
* for all data types (int, long, ...). The result is u_int 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 ALIGNBYTES32 (sizeof(int) - 1)
#define ALIGN32(p) (((u_long)(p) + ALIGNBYTES32) &~ALIGNBYTES32)
#define PGSHIFT 12 /* LOG2(NBPG) */
#define NBPG (1 << PGSHIFT) /* bytes/page */
#define PGOFSET (NBPG-1) /* byte offset into page */
#define NPTEPG (NBPG/(sizeof (pt_entry_t)))
/*
* XXXfvdl change this (after bootstrap) to take # of bits from
* config info into account.
*/
#define KERNBASE 0xffffffff80000000 /* start of kernel virtual space */
#define KERNTEXTOFF 0xffffffff80100000 /* start of kernel text */
#define BTOPKERNBASE ((u_long)KERNBASE >> PGSHIFT)
#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 SSIZE 1 /* initial stack size/NBPG */
#define SINCR 1 /* increment of stack/NBPG */
#ifdef DIAGNOSTIC
#define UPAGES 4 /* pages of u-area (1 for redzone) */
#else
#define UPAGES 3 /* pages of u-area */
#endif
#define USPACE (UPAGES * NBPG) /* total size of u-area */
#define INTRSTACKSIZE 4096
#ifndef MSGBUFSIZE
#define MSGBUFSIZE 8*NBPG /* default message buffer size */
#endif
/*
* Constants related to network buffer management.
* MCLBYTES must be no larger than NBPG (the software page size), and,
* on machines that exchange pages of input or output buffers with mbuf
* clusters (MAPPED_MBUFS), MCLBYTES must also be an integral multiple
* of the hardware page size.
*/
#define MSIZE 512 /* size of an mbuf */
#ifndef MCLSHIFT
#define MCLSHIFT 11 /* convert bytes to m_buf clusters */
/* 2K cluster can hold Ether frame */
#endif /* MCLSHIFT */
#define MCLBYTES (1 << MCLSHIFT) /* size of a m_buf cluster */
#ifndef NMBCLUSTERS
#if defined(_KERNEL_OPT)
#include "opt_gateway.h"
#endif
#ifdef GATEWAY
#define NMBCLUSTERS 4096 /* map size, max cluster allocation */
#else
#define NMBCLUSTERS 2048 /* map size, max cluster allocation */
#endif
#endif
#ifndef NFS_RSIZE
#define NFS_RSIZE 32768
#endif
#ifndef NFS_WSIZE
#define NFS_WSIZE 32768
#endif
/*
* 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 ((1 *1024 * 1024 * 1024) >> PAGE_SHIFT)
/*
* XXXfvdl the PD* stuff is different from i386.
*/
/*
* 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))
#define x86_btod(x) ((unsigned long)(x) >> L2_SHIFT)
#define x86_dtob(x) ((unsigned long)(x) << L2_SHIFT)
#define x86_round_page(x) ((((unsigned long)(x)) + PGOFSET) & ~PGOFSET)
#define x86_trunc_page(x) ((unsigned long)(x) & ~PGOFSET)
#define x86_btop(x) ((unsigned long)(x) >> PGSHIFT)
#define x86_ptob(x) ((unsigned long)(x) << PGSHIFT)
#define btop(x) x86_btop(x)
#define ptob(x) x86_ptob(x)
#define round_pdr(x) x86_round_pdr(x)
#define mstohz(ms) ((ms + 0UL) * hz / 1000)
#else /* __x86_64__ */
#include <i386/param.h>
#endif /* __x86_64__ */