home *** CD-ROM | disk | FTP | other *** search
- /*
- * Copyright (c) 1988 University of Utah.
- * Copyright (c) 1982, 1986, 1990, 1993
- * The Regents of the University of California. All rights reserved.
- *
- * This code is derived from software contributed to Berkeley by
- * the Systems Programming Group of the University of Utah Computer
- * Science Department.
- *
- * Redistribution and use in source and binary forms, with or without
- * modification, are permitted provided that the following conditions
- * are met:
- * 1. Redistributions of source code must retain the above copyright
- * notice, this list of conditions and the following disclaimer.
- * 2. Redistributions in binary form must reproduce the above copyright
- * notice, this list of conditions and the following disclaimer in the
- * documentation and/or other materials provided with the distribution.
- * 3. All advertising materials mentioning features or use of this software
- * must display the following acknowledgement:
- * This product includes software developed by the University of
- * California, Berkeley and its contributors.
- * 4. Neither the name of the University nor the names of its contributors
- * may be used to endorse or promote products derived from this software
- * without specific prior written permission.
- *
- * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
- * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
- * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
- * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
- * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
- * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
- * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
- * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
- * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
- * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
- * SUCH DAMAGE.
- *
- * from: Utah $Hdr: machparam.h 1.16 92/12/20$
- *
- * @(#)param.h 8.1 (Berkeley) 6/10/93
- */
-
- /*
- * Machine dependent constants for HP9000 series 300.
- */
- #define MACHINE "hp300"
-
- /*
- * Round p (pointer or byte index) up to a correctly-aligned value for all
- * data types (int, long, ...). The result is u_int and must be cast to
- * any desired pointer type.
- */
- #define ALIGNBYTES 3
- #define ALIGN(p) (((u_int)(p) + ALIGNBYTES) &~ ALIGNBYTES)
-
- #define NBPG 4096 /* bytes/page */
- #define PGOFSET (NBPG-1) /* byte offset into page */
- #define PGSHIFT 12 /* LOG2(NBPG) */
- #define NPTEPG (NBPG/(sizeof (struct pte)))
-
- #define NBSEG 0x400000 /* bytes/segment */
- #define SEGOFSET (NBSEG-1) /* byte offset into segment */
- #define SEGSHIFT 22 /* LOG2(NBSEG) */
-
- #define KERNBASE 0x00000000 /* start of kernel virtual */
- #define BTOPKERNBASE ((u_long)KERNBASE >> PGSHIFT)
-
- #define DEV_BSIZE 512
- #define DEV_BSHIFT 9 /* log2(DEV_BSIZE) */
- #define BLKDEV_IOSIZE 2048
- #define MAXPHYS (64 * 1024) /* max raw I/O transfer size */
-
- #define CLSIZE 1
- #define CLSIZELOG2 0
-
- /* NOTE: SSIZE, SINCR and UPAGES must be multiples of CLSIZE */
- #define SSIZE 1 /* initial stack size/NBPG */
- #define SINCR 1 /* increment of stack/NBPG */
-
- #define UPAGES 2 /* pages of u-area */
-
- /*
- * Constants related to network buffer management.
- * MCLBYTES must be no larger than CLBYTES (the software page size), and,
- * on machines that exchange pages of input or output buffers with mbuf
- * clusters (MAPPED_MBUFS), MCLBYTES must also be an integral multiple
- * of the hardware page size.
- */
- #define MSIZE 128 /* size of an mbuf */
- #define MCLBYTES 2048 /* large enough for ether MTU */
- #define MCLSHIFT 11
- #define MCLOFSET (MCLBYTES - 1)
- #ifndef NMBCLUSTERS
- #ifdef GATEWAY
- #define NMBCLUSTERS 512 /* map size, max cluster allocation */
- #else
- #define NMBCLUSTERS 256 /* map size, max cluster allocation */
- #endif
- #endif
-
- /*
- * Size of kernel malloc arena in CLBYTES-sized logical pages
- */
- #ifndef NKMEMCLUSTERS
- #define NKMEMCLUSTERS (2048*1024/CLBYTES)
- #endif
-
- /* pages ("clicks") (4096 bytes) to disk blocks */
- #define ctod(x) ((x)<<(PGSHIFT-DEV_BSHIFT))
- #define dtoc(x) ((x)>>(PGSHIFT-DEV_BSHIFT))
- #define dtob(x) ((x)<<DEV_BSHIFT)
-
- /* pages to bytes */
- #define ctob(x) ((x)<<PGSHIFT)
-
- /* bytes to pages */
- #define btoc(x) (((unsigned)(x)+(NBPG-1))>>PGSHIFT)
-
- #define LABELSECTOR (1024/DEV_BSIZE)
- #define LABELOFFSET 0
-
- #define btodb(bytes) /* calculates (bytes / DEV_BSIZE) */ \
- ((unsigned)(bytes) >> DEV_BSHIFT)
- #define dbtob(db) /* calculates (db * DEV_BSIZE) */ \
- ((unsigned)(db) << DEV_BSHIFT)
-
- /*
- * Map a ``block device block'' to a file system block.
- * This should be device dependent, and should use the bsize
- * field from the disk label.
- * For now though just use DEV_BSIZE.
- */
- #define bdbtofsb(bn) ((bn) / (BLKDEV_IOSIZE/DEV_BSIZE))
-
- /*
- * Mach derived conversion macros
- */
- #define hp300_round_page(x) ((((unsigned)(x)) + NBPG - 1) & ~(NBPG-1))
- #define hp300_trunc_page(x) ((unsigned)(x) & ~(NBPG-1))
- #define hp300_btop(x) ((unsigned)(x) >> PGSHIFT)
- #define hp300_ptob(x) ((unsigned)(x) << PGSHIFT)
-
- /*
- * spl functions; all but spl0 are done in-line
- */
- #include <machine/psl.h>
-
- #define _spl(s) \
- ({ \
- register int _spl_r; \
- \
- asm __volatile ("clrl %0; movew sr,%0; movew %1,sr" : \
- "&=d" (_spl_r) : "di" (s)); \
- _spl_r; \
- })
-
- /* spl0 requires checking for software interrupts */
- #define spl1() _spl(PSL_S|PSL_IPL1)
- #define spl2() _spl(PSL_S|PSL_IPL2)
- #define spl3() _spl(PSL_S|PSL_IPL3)
- #define spl4() _spl(PSL_S|PSL_IPL4)
- #define spl5() _spl(PSL_S|PSL_IPL5)
- #define spl6() _spl(PSL_S|PSL_IPL6)
- #define spl7() _spl(PSL_S|PSL_IPL7)
-
- #define splsoftclock() spl1()
- #define splnet() spl1()
- #define splbio() spl5()
- #define splimp() spl5()
- #define spltty() spl5()
- #define splclock() spl6()
- #define splstatclock() spl6()
- #define splvm() spl6()
- #define splhigh() spl7()
- #define splsched() spl7()
-
- /* watch out for side effects */
- #define splx(s) (s & PSL_IPL ? _spl(s) : spl0())
-
- #ifdef KERNEL
- #ifndef LOCORE
- int cpuspeed;
- #define DELAY(n) { register int N = cpuspeed * (n); while (--N > 0); }
- #endif
- #else
- #define DELAY(n) { register int N = (n); while (--N > 0); }
- #endif
-
- #ifdef HPUXCOMPAT
- /*
- * Constants/macros for HPUX multiple mapping of user address space.
- * Pages in the first 256Mb are mapped in at every 256Mb segment.
- */
- #define HPMMMASK 0xF0000000
- #define ISHPMMADDR(v) \
- ((curproc->p_md.md_flags & MDP_HPUXMMAP) && \
- ((unsigned)(v) & HPMMMASK) && \
- ((unsigned)(v) & HPMMMASK) != HPMMMASK)
- #define HPMMBASEADDR(v) \
- ((unsigned)(v) & ~HPMMMASK)
- #endif
-