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- /*
- * Copyright (c) 1988 University of Utah.
- * Copyright (c) 1982, 1990 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.
- */
- /*-
- * Copyright (C) 1993 Allen K. Briggs, Chris P. Caputo,
- * Michael L. Finch, Bradley A. Grantham, and
- * Lawrence A. Kesteloot
- * All rights reserved.
- *
- * 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 Alice Group.
- * 4. The names of the Alice Group or any of its members may not be used
- * to endorse or promote products derived from this software without
- * specific prior written permission.
- *
- * THIS SOFTWARE IS PROVIDED BY THE ALICE GROUP ``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 ALICE GROUP 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 $Hdr: machparam.h 1.11 89/08/14$
- *
- * from: @(#)param.h 7.8 (Berkeley) 6/28/91
- * $Id: param.h,v 1.6 1993/12/06 04:11:47 briggs Exp $
- */
-
- #ifndef PSL_IPL
- #include "machine/psl.h"
- #endif /* PSL_IPL */
-
- /*
- * Machine dependent constants for Macintosh II series.
- ALICE
- BG 05/24/92,17:46:53
- Well, I've tried to make this as macII-specific as possible.
- It's difficult without knowing exactly what these things do.
- 06/03/92,14:12:35 BG
- I've done a little more messing around; I think we're basically
- done for now except for tweeking.
- */
- #define MACHINE "mac68k"
- #define MACHINE_ARCH "m68k"
- #define MID_MACHINE MID_M68K
-
- /*
- * 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 (sizeof(int) - 1)
- #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 (1024*NBPG) /* bytes/segment */
- #define SEGOFSET (NBSEG-1) /* byte offset into segment */
- #define SEGSHIFT 22 /* LOG2(NBSEG) */
-
- /* ALICE 05/24/92,19:31:42 BG -- Well, I wish we didn't have to worry */
- /* about re-locating the kernel, but I think we will probably have to. */
- #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 3 /* 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 1024
- #define MCLSHIFT 10
- #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 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 macII_round_seg(x) ((((unsigned)(x)) + NBSEG - 1) & ~(NBSEG-1))
- #define macII_trunc_seg(x) ((unsigned)(x) & ~(NBSEG-1))
- #define macII_round_page(x) ((((unsigned)(x)) + NBPG - 1) & ~(NBPG-1))
- #define macII_trunc_page(x) ((unsigned)(x) & ~(NBPG-1))
- #define macII_btos(x) ((unsigned)(x) >> SEGSHIFT)
- #define macII_stob(x) ((unsigned)(x) << SEGSHIFT)
- #define macII_btop(x) ((unsigned)(x) >> PGSHIFT)
- #define macII_ptob(x) ((unsigned)(x) << PGSHIFT)
-
- /*
- * spl functions; all but spl0 are done in-line
- */
-
- #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 */
- #if defined(BARF_BARF_BARF)
- #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)
- #else /* not BARF_BARF_BARF */
- #define spl1() _spl(PSL_S|PSL_IPL3)
- #define spl2() _spl(PSL_S|PSL_IPL3)
- #define spl3() _spl(PSL_S|PSL_IPL3)
- #define spl4() _spl(PSL_S|PSL_IPL3)
- #define spl5() _spl(PSL_S|PSL_IPL3)
- #define spl6() _spl(PSL_S|PSL_IPL3)
- #define spl7() _spl(PSL_S|PSL_IPL7) /* spl7() always excludes everything */
- #endif /* BARF_BARF_BARF */
-
- /* ALICE 06/03/92,14:08:28 BG I guess we could put in some spl's for various */
- /* devices like VIA1 interrupt, and so on. */
- /* BARF -- These should be used for:
- 1) ensuring mutual exclusion (why use processor level?)
- 2) allowing faster devices to take priority
- */
- #define splsoftclock() spl1() /* disallow softclock */
- #define splnet() spl1() /* disallow network */
- #define splbio() spl5() /* disallow block I/O */
- #define splimp() spl5() /* disallow imput */
- #define spltty() spl5() /* disallow tty interrupts */
- #define splclock() spl6() /* disallow clock interrupt */
- #define splvm() spl6() /* disallow virtual memory operations */
- #define splhigh() spl7() /* disallow everything */
- #define splsched() spl7() /* disallow scheduling */
-
- /* 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
-