[src/trunk]: src/sys/arch/arc/include Moved from /cvsroot/syssrc/sys/arch/pic...

[soda <soda%NetBSD.org@localhost>]

details:   https://anonhg.NetBSD.org/src/rev/5b7a4bc50e50
branches:  trunk
changeset: 481010:5b7a4bc50e50
user:      soda <soda%NetBSD.org@localhost>
date:      Sun Jan 23 20:08:27 2000 +0000

description:
Moved from /cvsroot/syssrc/sys/arch/pica/include/param.h,v

diffstat:

 sys/arch/arc/include/param.h |  172 +++++++++++++++++++++++++++++++++++++++++++
 1 files changed, 172 insertions(+), 0 deletions(-)

diffs (176 lines):

diff -r eb5780208d5d -r 5b7a4bc50e50 sys/arch/arc/include/param.h
--- /dev/null   Thu Jan 01 00:00:00 1970 +0000
+++ b/sys/arch/arc/include/param.h      Sun Jan 23 20:08:27 2000 +0000
@@ -0,0 +1,172 @@
+/*     $NetBSD: param.h,v 1.10 2000/01/23 20:08:28 soda Exp $  */
+
+/*
+ * Copyright (c) 1988 University of Utah.
+ * Copyright (c) 1992, 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 and Ralph Campbell.
+ *
+ * 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 1.11 89/08/14
+ *
+ *
+ *     from: @(#)param.h       8.1 (Berkeley) 6/10/93
+ */
+
+/*
+ * Machine-dependent constants (VM, etc) common across MIPS cpus
+ */
+#include <mips/mips_param.h>
+
+/*
+ * Machine dependent constants for Acer Labs PICA_61.
+ */
+#define        MACHINE      "pica"
+#define MACHINE_ARCH "mips"
+#define MID_PICA MID_PMAX /* For the moment */
+#define MID_MACHINE  MID_PICA
+
+/*
+ * 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.
+ *
+ * ALIGNED_POINTER is a boolean macro that checks whether an address
+ * is valid to fetch data elements of type t from on this architecture.
+ * This does not reflect the optimal alignment, just the possibility
+ * (within reasonable limits). 
+ *
+ */
+#define        ALIGNBYTES              7
+#define        ALIGN(p)                (((u_int)(p) + ALIGNBYTES) &~ ALIGNBYTES)
+#define ALIGNED_POINTER(p,t)   ((((u_long)(p)) & (sizeof(t)-1)) == 0)
+
+#define        NBPG            4096            /* bytes/page */
+#define        PGOFSET         (NBPG-1)        /* byte offset into page */
+#define        PGSHIFT         12              /* LOG2(NBPG) */
+#define        NPTEPG          (NBPG/4)
+
+#define NBSEG          0x400000        /* bytes/segment */
+#define        SEGOFSET        (NBSEG-1)       /* byte offset into segment */
+#define        SEGSHIFT        22              /* LOG2(NBSEG) */
+
+#define        KERNBASE        0x80000000      /* start of kernel virtual */
+#define        KERNTEXTOFF     0x80080000      /* start of kernel text for kvm_mkdb */
+#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        SSIZE           1               /* initial stack size/NBPG */
+#define        SINCR           1               /* increment of stack/NBPG */
+
+#define        UPAGES          2               /* pages of u-area */
+#define        UADDR           0xffffc000      /* address of u */
+#define USPACE         (UPAGES*NBPG)   /* size of u-area in bytes */
+#define        UVPN            (UADDR>>PGSHIFT)/* virtual page number of u */
+#define        KERNELSTACK     (UADDR+UPAGES*NBPG)     /* top of kernel stack */
+
+/*
+ * 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            /* enough for whole Ethernet packet */
+#define        MCLSHIFT        10
+#define        MCLOFSET        (MCLBYTES - 1)
+#ifndef NMBCLUSTERS
+
+#if defined(_KERNEL) && !defined(_LKM)
+#include "opt_gateway.h"
+#endif /* _KERNEL && ! _LKM */
+
+#ifdef GATEWAY
+#define        NMBCLUSTERS     2048            /* map size, max cluster allocation */
+#else
+#define        NMBCLUSTERS     1024            /* map size, max cluster allocation */
+#endif
+#endif
+
+/*
+ * Size of kernel malloc arena in NBPG-sized logical pages
+ */ 
+#ifndef NKMEMCLUSTERS
+#define        NKMEMCLUSTERS   (512*1024/NBPG)
+#endif
+
+/* pages ("clicks") (4096 bytes) to disk blocks */
+#define        ctod(x) ((x) << (PGSHIFT - DEV_BSHIFT))
+#define        dtoc(x) ((x) >> (PGSHIFT - DEV_BSHIFT))
+
+/* pages to bytes */
+#define        ctob(x) ((x) << PGSHIFT)
+#define btoc(x) (((x) + PGOFSET) >> PGSHIFT)
+
+/* bytes to disk blocks */
+#define        btodb(x)        ((x) >> DEV_BSHIFT)
+#define dbtob(x)       ((x) << 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 pica_round_page(x)     ((((unsigned)(x)) + NBPG - 1) & ~(NBPG-1))
+#define pica_trunc_page(x)     ((unsigned)(x) & ~(NBPG-1))
+#define pica_btop(x)           ((unsigned)(x) >> PGSHIFT)
+#define pica_ptob(x)           ((unsigned)(x) << PGSHIFT)
+
+#ifdef _KERNEL
+#ifndef _LOCORE
+/*
+ *   Delay is based on an assumtion that each time in the loop
+ *   takes 3 clocks. Three is for branch and subtract in the delay slot.
+ */
+extern int cpuspeed;
+#define        DELAY(n)        { register int N = cpuspeed * (n); while ((N -= 3) > 0); }
+#endif /*!_LOCORE */
+
+#else /* !_KERNEL */
+#define        DELAY(n)        { register int N = (n); while (--N > 0); }
+#endif /* !_KERNEL */