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Annotation of sys/arch/hppa/include/param.h, Revision 1.1

1.1     ! nbrk        1: /*     $OpenBSD: param.h,v 1.36 2007/07/15 19:25:49 kettenis Exp $     */
        !             2:
        !             3: /*
        !             4:  * Copyright (c) 1988-1994, The University of Utah and
        !             5:  * the Computer Systems Laboratory at the University of Utah (CSL).
        !             6:  * All rights reserved.
        !             7:  *
        !             8:  * Permission to use, copy, modify and distribute this software is hereby
        !             9:  * granted provided that (1) source code retains these copyright, permission,
        !            10:  * and disclaimer notices, and (2) redistributions including binaries
        !            11:  * reproduce the notices in supporting documentation, and (3) all advertising
        !            12:  * materials mentioning features or use of this software display the following
        !            13:  * acknowledgement: ``This product includes software developed by the
        !            14:  * Computer Systems Laboratory at the University of Utah.''
        !            15:  *
        !            16:  * THE UNIVERSITY OF UTAH AND CSL ALLOW FREE USE OF THIS SOFTWARE IN ITS "AS
        !            17:  * IS" CONDITION.  THE UNIVERSITY OF UTAH AND CSL DISCLAIM ANY LIABILITY OF
        !            18:  * ANY KIND FOR ANY DAMAGES WHATSOEVER RESULTING FROM THE USE OF THIS SOFTWARE.
        !            19:  *
        !            20:  * CSL requests users of this software to return to csl-dist@cs.utah.edu any
        !            21:  * improvements that they make and grant CSL redistribution rights.
        !            22:  *
        !            23:  *     Utah $Hdr: param.h 1.18 94/12/16$
        !            24:  */
        !            25:
        !            26: #include <machine/cpu.h>
        !            27: #include <machine/intr.h>
        !            28:
        !            29: /*
        !            30:  * Machine dependent constants for PA-RISC.
        !            31:  */
        !            32:
        !            33: #define        _MACHINE        hppa
        !            34: #define        MACHINE         "hppa"
        !            35: #define        _MACHINE_ARCH   hppa
        !            36: #define        MACHINE_ARCH    "hppa"
        !            37: #define        MID_MACHINE     MID_HPUX800
        !            38:
        !            39: /*
        !            40:  * Round p (pointer or byte index) up to a correctly-aligned value for all
        !            41:  * data types (int, long, ...).   The result is u_int and must be cast to
        !            42:  * any desired pointer type.
        !            43:  */
        !            44: #define        ALIGNBYTES      7
        !            45: #define        ALIGN(p)        (((u_long)(p) + ALIGNBYTES) &~ ALIGNBYTES)
        !            46: #define        ALIGNED_POINTER(p,t) ((((u_long)(p)) & (sizeof(t) - 1)) == 0)
        !            47:
        !            48: #define        PAGE_SIZE       4096
        !            49: #define        PAGE_MASK       (PAGE_SIZE-1)
        !            50: #define        PAGE_SHIFT      12
        !            51:
        !            52: #define        NBPG            4096            /* bytes/page */
        !            53: #define        PGOFSET         (NBPG-1)        /* byte offset into page */
        !            54: #define        PGSHIFT         12              /* LOG2(NBPG) */
        !            55:
        !            56: #define        KERNBASE        0x00000000      /* start of kernel virtual */
        !            57:
        !            58: #define        DEV_BSHIFT      9               /* log2(DEV_BSIZE) */
        !            59: #define        DEV_BSIZE       (1 << DEV_BSHIFT)
        !            60: #define BLKDEV_IOSIZE  2048
        !            61: #define        MAXPHYS         (64 * 1024)     /* max raw I/O transfer size */
        !            62:
        !            63: #define        MACHINE_STACK_GROWS_UP  1       /* stack grows to higher addresses */
        !            64:
        !            65: #define        USPACE          (4 * NBPG)      /* pages for user struct and kstack */
        !            66: #define        USPACE_ALIGN    (0)             /* u-area alignment 0-none */
        !            67:
        !            68: #ifndef        MSGBUFSIZE
        !            69: #define        MSGBUFSIZE      2*NBPG          /* default message buffer size */
        !            70: #endif
        !            71:
        !            72: /*
        !            73:  * Constants related to network buffer management.
        !            74:  * MCLBYTES must be no larger than the software page size, and,
        !            75:  * on machines that exchange pages of input or output buffers with mbuf
        !            76:  * clusters (MAPPED_MBUFS), MCLBYTES must also be an integral multiple
        !            77:  * of the hardware page size.
        !            78:  */
        !            79: #define        MSIZE           256             /* size of an mbuf */
        !            80: #define        MCLSHIFT        11
        !            81: #define        MCLBYTES        (1 << MCLSHIFT) /* large enough for ether MTU */
        !            82: #define        MCLOFSET        (MCLBYTES - 1)
        !            83: #define        NMBCLUSTERS     4096            /* map size, max cluster allocation */
        !            84:
        !            85: /*
        !            86:  * Minimum and maximum sizes of the kernel malloc arena in PAGE_SIZE-sized
        !            87:  * logical pages.
        !            88:  */
        !            89: #define        NKMEMPAGES_MIN_DEFAULT  ((4 * 1024 * 1024) >> PAGE_SHIFT)
        !            90: #define        NKMEMPAGES_MAX_DEFAULT  ((128 * 1024 * 1024) >> PAGE_SHIFT)
        !            91:
        !            92: /* pages ("clicks") (4096 bytes) to disk blocks */
        !            93: #define        ctod(x)         ((x) << (PGSHIFT - DEV_BSHIFT))
        !            94: #define        dtoc(x)         ((x) >> (PGSHIFT - DEV_BSHIFT))
        !            95:
        !            96: /* pages to bytes */
        !            97: #define        ctob(x)         ((x) << PGSHIFT)
        !            98: #define        btoc(x)         (((x) + PGOFSET) >> PGSHIFT)
        !            99:
        !           100: #define        btodb(x)        ((x) >> DEV_BSHIFT)
        !           101: #define        dbtob(x)        ((x) << DEV_BSHIFT)
        !           102:
        !           103: #ifdef _KERNEL
        !           104: #ifdef COMPAT_HPUX
        !           105: /*
        !           106:  * Constants/macros for HPUX multiple mapping of user address space.
        !           107:  * Pages in the first 256Mb are mapped in at every 256Mb segment.
        !           108:  */
        !           109: #define HPMMMASK       0xF0000000
        !           110: #define ISHPMMADDR(v)  0               /* XXX ...jef */
        !           111: #define HPMMBASEADDR(v)        ((unsigned)(v) & ~HPMMMASK)
        !           112: #endif
        !           113: #endif
        !           114:
        !           115: #define        __SWAP_BROKEN