StdLib/Include/X64/machine/param.h

   1 /*  $NetBSD: param.h,v 1.3 2006/08/28 13:43:35 yamt Exp $ */
   2
   3 #define _MACHINE  amd64
   4 #define MACHINE   "amd64"
   5 #define _MACHINE_ARCH x86_64
   6 #define MACHINE_ARCH  "x86_64"
   7 #define MID_MACHINE MID_X86_64
   8
   9 /*
  10  * Round p (pointer or byte index) up to a correctly-aligned value
  11  * for all data types (int, long, ...).   The result is u_int and
  12  * must be cast to any desired pointer type.
  13  *
  14  * ALIGNED_POINTER is a boolean macro that checks whether an address
  15  * is valid to fetch data elements of type t from on this architecture.
  16  * This does not reflect the optimal alignment, just the possibility
  17  * (within reasonable limits).
  18  *
  19  */
  20 #define ALIGNBYTES    (sizeof(INT64) - 1)
  21 #define ALIGN(p)    (((UINT64)(p) + ALIGNBYTES) &~ALIGNBYTES)
  22 #define ALIGNED_POINTER(p,t)  1
  23
  24 #define ALIGNBYTES32    (sizeof(INT32) - 1)
  25 #define ALIGN32(p)    (((UINT32)(p) + ALIGNBYTES32) &~ALIGNBYTES32)
  26
  27 #define PGSHIFT   12    /* LOG2(NBPG) */
  28 #define NBPG    (1 << PGSHIFT)  /* bytes/page */
  29 #define PGOFSET   (NBPG-1)  /* byte offset into page */
  30 #define NPTEPG    (NBPG/(sizeof (pt_entry_t)))
  31
  32 /*
  33  * XXXfvdl change this (after bootstrap) to take # of bits from
  34  * config info into account.
  35  */
  36 #define KERNBASE  0xffffffff80000000 /* start of kernel virtual space */
  37 #define KERNTEXTOFF 0xffffffff80100000 /* start of kernel text */
  38 #define BTOPKERNBASE  ((u_long)KERNBASE >> PGSHIFT)
  39
  40 #define KERNTEXTOFF_HI  0xffffffff
  41 #define KERNTEXTOFF_LO  0x80100000
  42
  43 #define KERNBASE_HI 0xffffffff
  44 #define KERNBASE_LO 0x80000000
  45
  46 #define DEV_BSHIFT  9   /* log2(DEV_BSIZE) */
  47 #define DEV_BSIZE (1 << DEV_BSHIFT)
  48 #define BLKDEV_IOSIZE 2048
  49 #ifndef MAXPHYS
  50 #define MAXPHYS   (64 * 1024) /* max raw I/O transfer size */
  51 #endif
  52
  53 #define SSIZE   1   /* initial stack size/NBPG */
  54 #define SINCR   1   /* increment of stack/NBPG */
  55 #define UPAGES    5   /* pages of u-area */
  56 #define USPACE    (UPAGES * NBPG) /* total size of u-area */
  57
  58 #ifndef MSGBUFSIZE
  59 #define MSGBUFSIZE  4*NBPG    /* default message buffer size */
  60 #endif
  61
  62 /*
  63  * Constants related to network buffer management.
  64  * MCLBYTES must be no larger than NBPG (the software page size), and,
  65  * on machines that exchange pages of input or output buffers with mbuf
  66  * clusters (MAPPED_MBUFS), MCLBYTES must also be an integral multiple
  67  * of the hardware page size.
  68  */
  69 #define MSIZE   512   /* size of an mbuf */
  70
  71 #ifndef MCLSHIFT
  72 #define MCLSHIFT  11    /* convert bytes to m_buf clusters */
  73           /* 2K cluster can hold Ether frame */
  74 #endif  /* MCLSHIFT */
  75
  76 #define MCLBYTES  (1 << MCLSHIFT) /* size of a m_buf cluster */
  77
  78 #ifndef NMBCLUSTERS
  79   #ifdef GATEWAY
  80     #define NMBCLUSTERS 4096    /* map size, max cluster allocation */
  81   #else
  82     #define NMBCLUSTERS 2048    /* map size, max cluster allocation */
  83   #endif
  84 #endif
  85
  86 #ifndef NFS_RSIZE
  87   #define NFS_RSIZE       32768
  88 #endif
  89 #ifndef NFS_WSIZE
  90   #define NFS_WSIZE       32768
  91 #endif
  92
  93 /*
  94  * Minimum and maximum sizes of the kernel malloc arena in PAGE_SIZE-sized
  95  * logical pages.
  96  */
  97 //#define NKMEMPAGES_MIN_DEFAULT  ((8 * 1024 * 1024) >> PAGE_SHIFT)
  98 //#define NKMEMPAGES_MAX_DEFAULT  ((1 *1024 * 1024 * 1024) >> PAGE_SHIFT)
  99
 100 /*
 101  * XXXfvdl the PD* stuff is different from i386.
 102  */
 103 /*
 104  * Mach derived conversion macros
 105  */
 106 #ifdef  MACH_DCM
 107   #define x86_round_pdr(x)  ((((unsigned long)(x)) + (NBPD_L2 - 1)) & ~(NBPD_L2 - 1))
 108   #define x86_trunc_pdr(x)  ((unsigned long)(x) & ~(NBPD_L2 - 1))
 109   #define x86_btod(x)       ((unsigned long)(x) >> L2_SHIFT)
 110   #define x86_dtob(x)       ((unsigned long)(x) << L2_SHIFT)
 111 #endif  // MACH_DCM
 112
 113 #define x86_round_page(x) ((((ULONG32)(x)) + PGOFSET) & ~PGOFSET)
 114 #define x86_trunc_page(x) ((ULONG32)(x) & ~PGOFSET)
 115 #define x86_btop(x)   ((ULONG32)(x) >> PGSHIFT)
 116 #define x86_ptob(x)   ((ULONG32)(x) << PGSHIFT)
 117
 118 #define btop(x)       x86_btop(x)
 119 #define ptob(x)       x86_ptob(x)
 120 #define round_pdr(x)      x86_round_pdr(x)
 121
 122 #define mstohz(ms) ((ms + 0UL) * hz / 1000)