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Annotation of Net2/arch/hp300/include/param.h, revision 1.1

1.1     ! root        1: /*
        !             2:  * Copyright (c) 1988 University of Utah.
        !             3:  * Copyright (c) 1982, 1986, 1990 The Regents of the University of California.
        !             4:  * All rights reserved.
        !             5:  *
        !             6:  * This code is derived from software contributed to Berkeley by
        !             7:  * the Systems Programming Group of the University of Utah Computer
        !             8:  * Science Department.
        !             9:  *
        !            10:  * Redistribution and use in source and binary forms, with or without
        !            11:  * modification, are permitted provided that the following conditions
        !            12:  * are met:
        !            13:  * 1. Redistributions of source code must retain the above copyright
        !            14:  *    notice, this list of conditions and the following disclaimer.
        !            15:  * 2. Redistributions in binary form must reproduce the above copyright
        !            16:  *    notice, this list of conditions and the following disclaimer in the
        !            17:  *    documentation and/or other materials provided with the distribution.
        !            18:  * 3. All advertising materials mentioning features or use of this software
        !            19:  *    must display the following acknowledgement:
        !            20:  *     This product includes software developed by the University of
        !            21:  *     California, Berkeley and its contributors.
        !            22:  * 4. Neither the name of the University nor the names of its contributors
        !            23:  *    may be used to endorse or promote products derived from this software
        !            24:  *    without specific prior written permission.
        !            25:  *
        !            26:  * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
        !            27:  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
        !            28:  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
        !            29:  * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
        !            30:  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
        !            31:  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
        !            32:  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
        !            33:  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
        !            34:  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
        !            35:  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
        !            36:  * SUCH DAMAGE.
        !            37:  *
        !            38:  * from: Utah $Hdr: machparam.h 1.11 89/08/14$
        !            39:  *
        !            40:  *     @(#)param.h     7.8 (Berkeley) 6/28/91
        !            41:  */
        !            42: 
        !            43: /*
        !            44:  * Machine dependent constants for HP9000 series 300.
        !            45:  */
        !            46: #define        MACHINE "hp300"
        !            47: 
        !            48: /*
        !            49:  * Round p (pointer or byte index) up to a correctly-aligned value
        !            50:  * for all data types (int, long, ...).   The result is u_int and
        !            51:  * must be cast to any desired pointer type.
        !            52:  */
        !            53: #define        ALIGN(p)        (((u_int)(p) + (sizeof(int) - 1)) &~ (sizeof(int) - 1))
        !            54: 
        !            55: #define        NBPG            4096            /* bytes/page */
        !            56: #define        PGOFSET         (NBPG-1)        /* byte offset into page */
        !            57: #define        PGSHIFT         12              /* LOG2(NBPG) */
        !            58: #define        NPTEPG          (NBPG/(sizeof (struct pte)))
        !            59: 
        !            60: #define NBSEG          (1024*NBPG)     /* bytes/segment */
        !            61: #define        SEGOFSET        (NBSEG-1)       /* byte offset into segment */
        !            62: #define        SEGSHIFT        22              /* LOG2(NBSEG) */
        !            63: 
        !            64: #define        KERNBASE        0x00000000      /* start of kernel virtual */
        !            65: #define        BTOPKERNBASE    ((u_long)KERNBASE >> PGSHIFT)
        !            66: 
        !            67: #define        DEV_BSIZE       512
        !            68: #define        DEV_BSHIFT      9               /* log2(DEV_BSIZE) */
        !            69: #define BLKDEV_IOSIZE  2048
        !            70: #define        MAXPHYS         (64 * 1024)     /* max raw I/O transfer size */
        !            71: 
        !            72: #define        CLSIZE          1
        !            73: #define        CLSIZELOG2      0
        !            74: 
        !            75: /* NOTE: SSIZE, SINCR and UPAGES must be multiples of CLSIZE */
        !            76: #define        SSIZE           1               /* initial stack size/NBPG */
        !            77: #define        SINCR           1               /* increment of stack/NBPG */
        !            78: 
        !            79: #define        UPAGES          3               /* pages of u-area */
        !            80: 
        !            81: /*
        !            82:  * Constants related to network buffer management.
        !            83:  * MCLBYTES must be no larger than CLBYTES (the software page size), and,
        !            84:  * on machines that exchange pages of input or output buffers with mbuf
        !            85:  * clusters (MAPPED_MBUFS), MCLBYTES must also be an integral multiple
        !            86:  * of the hardware page size.
        !            87:  */
        !            88: #define        MSIZE           128             /* size of an mbuf */
        !            89: #define        MCLBYTES        1024
        !            90: #define        MCLSHIFT        10
        !            91: #define        MCLOFSET        (MCLBYTES - 1)
        !            92: #ifndef NMBCLUSTERS
        !            93: #ifdef GATEWAY
        !            94: #define        NMBCLUSTERS     512             /* map size, max cluster allocation */
        !            95: #else
        !            96: #define        NMBCLUSTERS     256             /* map size, max cluster allocation */
        !            97: #endif
        !            98: #endif
        !            99: 
        !           100: /*
        !           101:  * Size of kernel malloc arena in CLBYTES-sized logical pages
        !           102:  */ 
        !           103: #ifndef NKMEMCLUSTERS
        !           104: #define        NKMEMCLUSTERS   (2048*1024/CLBYTES)
        !           105: #endif
        !           106: 
        !           107: /* pages ("clicks") (4096 bytes) to disk blocks */
        !           108: #define        ctod(x) ((x)<<(PGSHIFT-DEV_BSHIFT))
        !           109: #define        dtoc(x) ((x)>>(PGSHIFT-DEV_BSHIFT))
        !           110: #define        dtob(x) ((x)<<DEV_BSHIFT)
        !           111: 
        !           112: /* pages to bytes */
        !           113: #define        ctob(x) ((x)<<PGSHIFT)
        !           114: 
        !           115: /* bytes to pages */
        !           116: #define        btoc(x) (((unsigned)(x)+(NBPG-1))>>PGSHIFT)
        !           117: 
        !           118: #define        btodb(bytes)                    /* calculates (bytes / DEV_BSIZE) */ \
        !           119:        ((unsigned)(bytes) >> DEV_BSHIFT)
        !           120: #define        dbtob(db)                       /* calculates (db * DEV_BSIZE) */ \
        !           121:        ((unsigned)(db) << DEV_BSHIFT)
        !           122: 
        !           123: /*
        !           124:  * Map a ``block device block'' to a file system block.
        !           125:  * This should be device dependent, and should use the bsize
        !           126:  * field from the disk label.
        !           127:  * For now though just use DEV_BSIZE.
        !           128:  */
        !           129: #define        bdbtofsb(bn)    ((bn) / (BLKDEV_IOSIZE/DEV_BSIZE))
        !           130: 
        !           131: /*
        !           132:  * Mach derived conversion macros
        !           133:  */
        !           134: #define hp300_round_seg(x)     ((((unsigned)(x)) + NBSEG - 1) & ~(NBSEG-1))
        !           135: #define hp300_trunc_seg(x)     ((unsigned)(x) & ~(NBSEG-1))
        !           136: #define hp300_round_page(x)    ((((unsigned)(x)) + NBPG - 1) & ~(NBPG-1))
        !           137: #define hp300_trunc_page(x)    ((unsigned)(x) & ~(NBPG-1))
        !           138: #define hp300_btos(x)          ((unsigned)(x) >> SEGSHIFT)
        !           139: #define hp300_stob(x)          ((unsigned)(x) << SEGSHIFT)
        !           140: #define hp300_btop(x)          ((unsigned)(x) >> PGSHIFT)
        !           141: #define hp300_ptob(x)          ((unsigned)(x) << PGSHIFT)
        !           142: 
        !           143: /*
        !           144:  * spl functions; all but spl0 are done in-line
        !           145:  */
        !           146: #include <machine/psl.h>
        !           147: 
        !           148: #define _spl(s) \
        !           149: ({ \
        !           150:         register int _spl_r; \
        !           151: \
        !           152:         asm __volatile ("clrl %0; movew sr,%0; movew %1,sr" : \
        !           153:                 "&=d" (_spl_r) : "di" (s)); \
        !           154:         _spl_r; \
        !           155: })
        !           156: 
        !           157: /* spl0 requires checking for software interrupts */
        !           158: #define spl1()  _spl(PSL_S|PSL_IPL1)
        !           159: #define spl2()  _spl(PSL_S|PSL_IPL2)
        !           160: #define spl3()  _spl(PSL_S|PSL_IPL3)
        !           161: #define spl4()  _spl(PSL_S|PSL_IPL4)
        !           162: #define spl5()  _spl(PSL_S|PSL_IPL5)
        !           163: #define spl6()  _spl(PSL_S|PSL_IPL6)
        !           164: #define spl7()  _spl(PSL_S|PSL_IPL7)
        !           165: 
        !           166: #define splsoftclock()  spl1()
        !           167: #define splnet()        spl1()
        !           168: #define splbio()        spl5()
        !           169: #define splimp()        spl5()
        !           170: #define spltty()        spl5()
        !           171: #define splclock()      spl6()
        !           172: #define splvm()         spl6()
        !           173: #define splhigh()       spl7()
        !           174: #define splsched()      spl7()
        !           175: 
        !           176: /* watch out for side effects */
        !           177: #define splx(s)         (s & PSL_IPL ? _spl(s) : spl0())
        !           178: 
        !           179: #ifdef KERNEL
        !           180: #ifndef LOCORE
        !           181: int    cpuspeed;
        !           182: #define        DELAY(n)        { register int N = cpuspeed * (n); while (--N > 0); }
        !           183: #endif
        !           184: 
        !           185: #else
        !           186: #define        DELAY(n)        { register int N = (n); while (--N > 0); }
        !           187: #endif
        !           188: 
        !           189: #ifdef HPUXCOMPAT
        !           190: /*
        !           191:  * Constants/macros for HPUX multiple mapping of user address space.
        !           192:  * Pages in the first 256Mb are mapped in at every 256Mb segment.
        !           193:  */
        !           194: #define HPMMMASK       0xF0000000
        !           195: #define ISHPMMADDR(v)  \
        !           196:     ((curproc->p_addr->u_pcb.pcb_flags&PCB_HPUXMMAP) && ((unsigned)(v)&HPMMMASK) != HPMMMASK)
        !           197: #define HPMMBASEADDR(v)        ((unsigned)(v) & ~HPMMMASK)
        !           198: #endif

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