145 lines
4.3 KiB
C
145 lines
4.3 KiB
C
/* $NetBSD: param.h,v 1.2 2002/02/26 15:13:27 simonb Exp $ */
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#ifdef _KERNEL
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#ifdef _LOCORE
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#include <machine/psl.h>
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#else
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#include <machine/cpu.h>
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#endif
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#endif
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#define _MACHINE x86_64
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#define MACHINE "x86_64"
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#define _MACHINE_ARCH x86_64
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#define MACHINE_ARCH "x86_64"
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#define MID_MACHINE MID_X86_64
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/*
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* Round p (pointer or byte index) up to a correctly-aligned value
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* for all data types (int, long, ...). The result is u_int and
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* must be cast to any desired pointer type.
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*
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* ALIGNED_POINTER is a boolean macro that checks whether an address
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* is valid to fetch data elements of type t from on this architecture.
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* This does not reflect the optimal alignment, just the possibility
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* (within reasonable limits).
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*
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*/
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#define ALIGNBYTES (sizeof(long) - 1)
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#define ALIGN(p) (((u_long)(p) + ALIGNBYTES) &~ALIGNBYTES)
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#define ALIGNED_POINTER(p,t) 1
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#define ALIGNBYTES32 (sizeof(int) - 1)
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#define ALIGN32(p) (((u_long)(p) + ALIGNBYTES32) &~ALIGNBYTES32)
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#define PGSHIFT 12 /* LOG2(NBPG) */
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#define NBPG (1 << PGSHIFT) /* bytes/page */
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#define PGOFSET (NBPG-1) /* byte offset into page */
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#define NPTEPG (NBPG/(sizeof (pt_entry_t)))
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/*
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* XXXfvdl change this (after bootstrap) to take # of bits from
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* config info into account.
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*/
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#define KERNBASE 0xffff800000000000 /* start of kernel virtual space */
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#define KERNTEXTOFF 0xffff800000100000 /* start of kernel text */
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#define BTOPKERNBASE ((u_long)KERNBASE >> PGSHIFT)
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#define KERNTEXTOFF_HI 0xffff8000
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#define KERNTEXTOFF_LO 0x00100000
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#define KERNBASE_HI 0xffff8000
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#define KERNBASE_LO 0x00000000
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#define DEV_BSHIFT 9 /* log2(DEV_BSIZE) */
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#define DEV_BSIZE (1 << DEV_BSHIFT)
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#define BLKDEV_IOSIZE 2048
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#ifndef MAXPHYS
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#define MAXPHYS (64 * 1024) /* max raw I/O transfer size */
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#endif
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#define SSIZE 1 /* initial stack size/NBPG */
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#define SINCR 1 /* increment of stack/NBPG */
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#define UPAGES 4 /* pages of u-area */
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#define USPACE (UPAGES * NBPG) /* total size of u-area */
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#ifndef MSGBUFSIZE
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#define MSGBUFSIZE 4*NBPG /* default message buffer size */
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#endif
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/*
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* Constants related to network buffer management.
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* MCLBYTES must be no larger than NBPG (the software page size), and,
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* on machines that exchange pages of input or output buffers with mbuf
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* clusters (MAPPED_MBUFS), MCLBYTES must also be an integral multiple
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* of the hardware page size.
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*/
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#define MSIZE 256 /* size of an mbuf */
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#ifndef MCLSHIFT
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#define MCLSHIFT 11 /* convert bytes to m_buf clusters */
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/* 2K cluster can hold Ether frame */
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#endif /* MCLSHIFT */
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#define MCLBYTES (1 << MCLSHIFT) /* size of a m_buf cluster */
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#ifndef NMBCLUSTERS
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#if defined(_KERNEL_OPT)
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#include "opt_gateway.h"
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#endif
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#ifdef GATEWAY
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#define NMBCLUSTERS 4096 /* map size, max cluster allocation */
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#else
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#define NMBCLUSTERS 2048 /* map size, max cluster allocation */
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#endif
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#endif
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/*
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* Minimum and maximum sizes of the kernel malloc arena in PAGE_SIZE-sized
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* logical pages.
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*/
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#define NKMEMPAGES_MIN_DEFAULT ((8 * 1024 * 1024) >> PAGE_SHIFT)
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#define NKMEMPAGES_MAX_DEFAULT ((128 * 1024 * 1024) >> PAGE_SHIFT)
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/* pages ("clicks") to disk blocks */
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#define ctod(x) ((x) << (PGSHIFT - DEV_BSHIFT))
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#define dtoc(x) ((x) >> (PGSHIFT - DEV_BSHIFT))
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/* bytes to pages */
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#define ctob(x) ((x) << PGSHIFT)
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#define btoc(x) (((x) + PGOFSET) >> PGSHIFT)
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/* bytes to disk blocks */
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#define dbtob(x) ((x) << DEV_BSHIFT)
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#define btodb(x) ((x) >> DEV_BSHIFT)
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/*
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* Map a ``block device block'' to a file system block.
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* This should be device dependent, and should use the bsize
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* field from the disk label.
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* For now though just use DEV_BSIZE.
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*/
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#define bdbtofsb(bn) ((bn) / (BLKDEV_IOSIZE / DEV_BSIZE))
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/*
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* XXXfvdl the PD* stuff is different from i386.
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*/
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/*
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* Mach derived conversion macros
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*/
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#define x86_64_round_pdr(x) \
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((((unsigned long)(x)) + (NBPD_L2 - 1)) & ~(NBPD_L2 - 1))
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#define x86_64_trunc_pdr(x) ((unsigned long)(x) & ~(NBPD_L2 - 1))
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#define x86_64_btod(x) ((unsigned long)(x) >> L2_SHIFT)
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#define x86_64_dtob(x) ((unsigned long)(x) << L2_SHIFT)
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#define x86_64_round_page(x) ((((unsigned long)(x)) + PGOFSET) & ~PGOFSET)
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#define x86_64_trunc_page(x) ((unsigned long)(x) & ~PGOFSET)
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#define x86_64_btop(x) ((unsigned long)(x) >> PGSHIFT)
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#define x86_64_ptob(x) ((unsigned long)(x) << PGSHIFT)
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#define btop(x) x86_64_btop(x)
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#define ptob(x) x86_64_ptob(x)
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#define x86_trunc_page(x) x86_64_trunc_page(x)
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#define round_pdr(x) x86_64_round_pdr(x)
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