initial import of pica stuff (a few theo modifications already in here)

1 files changed, 167 insertions, 0 deletions

diff --git a/sys/arch/pica/include/param.h b/sys/arch/pica/include/param.h
new file mode 100644
index 00000000000..3f32862f4d8
--- /dev/null
+++ b/sys/arch/pica/include/param.h
@@ -0,0 +1,167 @@
+/*
+ * 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
+ *      $Id: param.h,v 1.1 1995/10/18 10:39:13 deraadt Exp $
+ */
+
+/*
+ * 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.
+ */
+#define	ALIGNBYTES	7
+#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/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	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 */
+#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
+#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	(512*1024/CLBYTES)
+#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
+extern int (*Mach_splnet)(), (*Mach_splbio)(), (*Mach_splimp)(),
+	   (*Mach_spltty)(), (*Mach_splclock)(), (*Mach_splstatclock)();
+#define	splnet()	((*Mach_splnet)())
+#define	splbio()	((*Mach_splbio)())
+#define	splimp()	((*Mach_splimp)())
+#define	spltty()	((*Mach_spltty)())
+#define	splclock()	((*Mach_splclock)())
+#define	splstatclock()	((*Mach_splstatclock)())
+
+/*
+ *   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
+
+#else /* !_KERNEL */
+#define	DELAY(n)	{ register int N = (n); while (--N > 0); }
+#endif /* !_KERNEL */