Home | History | Annotate | Line # | Download | only in include
param.h revision 1.27 
      1 /*	$NetBSD: param.h,v 1.27 2018/12/02 21:00:13 maxv Exp $	*/
      2 
      3 #ifdef __x86_64__
      4 
      5 #ifndef XEN
      6 /* Must be defined before cpu.h */
      7 #define	MAXCPUS		256
      8 #endif
      9 
     10 #ifdef _KERNEL
     11 #include <machine/cpu.h>
     12 #if defined(_KERNEL_OPT)
     13 #include "opt_kasan.h"
     14 #include "opt_kleak.h"
     15 #endif
     16 #endif
     17 
     18 #define	_MACHINE	amd64
     19 #define	MACHINE		"amd64"
     20 #define	_MACHINE_ARCH	x86_64
     21 #define	MACHINE_ARCH	"x86_64"
     22 #define MID_MACHINE	MID_X86_64
     23 
     24 #define ALIGNED_POINTER(p,t)	1
     25 
     26 #define ALIGNBYTES32		(sizeof(int) - 1)
     27 #define ALIGN32(p)		(((u_long)(p) + ALIGNBYTES32) &~ALIGNBYTES32)
     28 
     29 #define	PGSHIFT		12		/* LOG2(NBPG) */
     30 #define	NBPG		(1 << PGSHIFT)	/* bytes/page */
     31 #define	PGOFSET		(NBPG-1)	/* byte offset into page */
     32 #define	NPTEPG		(NBPG/(sizeof (pt_entry_t)))
     33 
     34 #define	MAXIOMEM	0xffffffffffff
     35 
     36 /*
     37  * Maximum physical memory supported by the implementation.
     38  */
     39 #define MAXPHYSMEM	0x100000000000ULL /* 16TB */
     40 
     41 /*
     42  * XXXfvdl change this (after bootstrap) to take # of bits from
     43  * config info into account.
     44  */
     45 #define	KERNBASE	0xffffffff80000000 /* start of kernel virtual space */
     46 #define	KERNTEXTOFF	0xffffffff80200000 /* start of kernel text */
     47 #define	BTOPKERNBASE	((u_long)KERNBASE >> PGSHIFT)
     48 
     49 #define KERNTEXTOFF_HI	0xffffffff
     50 #define KERNTEXTOFF_LO	0x80200000
     51 
     52 #define KERNBASE_HI	0xffffffff
     53 #define KERNBASE_LO	0x80000000
     54 
     55 #define	DEV_BSHIFT	9		/* log2(DEV_BSIZE) */
     56 #define	DEV_BSIZE	(1 << DEV_BSHIFT)
     57 #define	BLKDEV_IOSIZE	2048
     58 #ifndef	MAXPHYS
     59 #define	MAXPHYS		(64 * 1024)	/* max raw I/O transfer size */
     60 #endif
     61 
     62 #define	SSIZE		1		/* initial stack size/NBPG */
     63 #define	SINCR		1		/* increment of stack/NBPG */
     64 
     65 #if defined(KASAN) || defined(KLEAK)
     66 #define	UPAGES		8
     67 #elif defined(DIAGNOSTIC)
     68 #define	UPAGES		5		/* pages of u-area (1 for redzone) */
     69 #else
     70 #define	UPAGES		4		/* pages of u-area */
     71 #endif
     72 #define	USPACE		(UPAGES * NBPG)	/* total size of u-area */
     73 
     74 #ifndef MSGBUFSIZE
     75 #define MSGBUFSIZE	(16*NBPG)	/* default message buffer size */
     76 #endif
     77 
     78 /*
     79  * Constants related to network buffer management.
     80  * MCLBYTES must be no larger than NBPG (the software page size), and,
     81  * on machines that exchange pages of input or output buffers with mbuf
     82  * clusters (MAPPED_MBUFS), MCLBYTES must also be an integral multiple
     83  * of the hardware page size.
     84  */
     85 #define	MSIZE		512		/* size of an mbuf */
     86 
     87 #ifndef MCLSHIFT
     88 #define	MCLSHIFT	11		/* convert bytes to m_buf clusters */
     89 					/* 2K cluster can hold Ether frame */
     90 #endif	/* MCLSHIFT */
     91 
     92 #define	MCLBYTES	(1 << MCLSHIFT)	/* size of a m_buf cluster */
     93 
     94 #ifndef NFS_RSIZE
     95 #define NFS_RSIZE       32768
     96 #endif
     97 #ifndef NFS_WSIZE
     98 #define NFS_WSIZE       32768
     99 #endif
    100 
    101 /*
    102  * Minimum size of the kernel kmem_arena in PAGE_SIZE-sized
    103  * logical pages.
    104  * No enforced maximum on amd64.
    105  */
    106 #define	NKMEMPAGES_MIN_DEFAULT	((8 * 1024 * 1024) >> PAGE_SHIFT)
    107 #define	NKMEMPAGES_MAX_UNLIMITED 1
    108 
    109 /*
    110  * XXXfvdl the PD* stuff is different from i386.
    111  */
    112 /*
    113  * Mach derived conversion macros
    114  */
    115 #define	x86_round_pdr(x) \
    116 	((((unsigned long)(x)) + (NBPD_L2 - 1)) & ~(NBPD_L2 - 1))
    117 #define	x86_trunc_pdr(x)	((unsigned long)(x) & ~(NBPD_L2 - 1))
    118 #define	x86_btod(x)		((unsigned long)(x) >> L2_SHIFT)
    119 #define	x86_dtob(x)		((unsigned long)(x) << L2_SHIFT)
    120 #define	x86_round_page(x)	((((unsigned long)(x)) + PGOFSET) & ~PGOFSET)
    121 #define	x86_trunc_page(x)	((unsigned long)(x) & ~PGOFSET)
    122 #define	x86_btop(x)		((unsigned long)(x) >> PGSHIFT)
    123 #define	x86_ptob(x)		((unsigned long)(x) << PGSHIFT)
    124 
    125 #define btop(x)				x86_btop(x)
    126 #define ptob(x)				x86_ptob(x)
    127 
    128 #define mstohz(ms) ((ms + 0UL) * hz / 1000)
    129 
    130 #else	/*	__x86_64__	*/
    131 
    132 #include <i386/param.h>
    133 
    134 #endif	/*	__x86_64__	*/
    135