initial import of NetBSD tree

1 files changed, 149 insertions, 0 deletions

diff --git a/sys/arch/amiga/include/pte.h b/sys/arch/amiga/include/pte.h
new file mode 100644
index 00000000000..8617b5f3213
--- /dev/null
+++ b/sys/arch/amiga/include/pte.h
@@ -0,0 +1,149 @@
+/*	$NetBSD: pte.h,v 1.14 1995/09/29 13:52:09 chopps Exp $	*/
+
+/*
+ * Copyright (c) 1988 University of Utah.
+ * Copyright (c) 1982, 1986, 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.
+ *
+ * from: Utah $Hdr: pte.h 1.11 89/09/03$
+ *
+ *	@(#)pte.h	7.3 (Berkeley) 5/8/91
+ */
+#ifndef _MACHINE_PTE_H_
+#define _MACHINE_PTE_H_
+
+/*
+ * AMIGA hardware segment/page table entries
+ */
+
+struct pte {
+	u_int pte;
+};
+typedef u_int pt_entry_t;		/* Mach page table entry */
+
+struct ste {
+	u_int ste;
+};
+typedef u_int st_entry_t;		/* segment table entry */
+
+#define	PT_ENTRY_NULL	((pt_entry_t *) 0)
+#define	ST_ENTRY_NULL	((st_entry_t *) 0)
+
+#define	SG_V		0x00000002	/* segment is valid */
+#define	SG_NV		0x00000000
+#define	SG_PROT		0x00000004	/* access protection mask */
+#define	SG_RO		0x00000004
+#define	SG_RW		0x00000000
+#define SG_U		0x00000008	/* modified bit (68040) */
+#define	SG_FRAME	0xffffe000
+#define SG_IMASK	0xff000000
+#define SG_ISHIFT	24
+#define SG_PMASK	0x00ffe000
+#define SG_PSHIFT	13
+
+/* 68040 additions */
+#define SG4_MASK1	0xfe000000	/* pointer table 1 index mask */
+#define SG4_SHIFT1	25
+#define SG4_MASK2	0x01fc0000	/* pointer table 2 index mask */
+#define	SG4_SHIFT2	18
+#define SG4_MASK3	0x0003e000	/* page table index mask */
+#define	SG4_SHIFT3	13
+#define	SG4_ADDR1	0xfffffe00	/* pointer table address mask */
+#define	SG4_ADDR2	0xffffff80	/* page table address mask */
+#define SG4_LEV1SIZE	128		/* entries in pointer table 1 */
+#define SG4_LEV2SIZE	128		/* entries in pointer table 2 */
+#define SG4_LEV3SIZE	32		/* entries in page table */
+
+#define	PG_V		0x00000001
+#define	PG_NV		0x00000000
+#define	PG_PROT		0x00000004
+#define	PG_U		0x00000008
+#define	PG_M		0x00000010
+#define	PG_W		0x00000100
+#define	PG_RO		0x00000004
+#define	PG_RW		0x00000000
+#define PG_FRAME	0xffffe000
+#define	PG_CI		0x00000040
+#define PG_SHIFT	13
+#define	PG_PFNUM(x)	(((x) & PG_FRAME) >> PG_SHIFT)
+
+/* 68040 additions */
+#define PG_CMASK	0x00000060	/* cache mode mask */
+#define PG_CWT		0x00000000	/* writethrough caching */
+#define PG_CCB		0x00000020	/* copyback caching */
+#define PG_CIS		0x00000040	/* cache inhibited serialized */
+#define PG_CIN		0x00000060	/* cache inhibited nonserialized */
+#define PG_SO		0x00000080	/* supervisor only */
+
+#define AMIGA_040RTSIZE		512	/* root (level 1) table size */
+#define AMIGA_040STSIZE		512	/* segment (level 2) table size */
+#define	AMIGA_040PTSIZE		128	/* page (level 3) table size */
+#if 0
+#define AMIGA_STSIZE		1024	/* segment table size */
+#else
+#define	AMIGA_STSIZE		(MAXUL2SIZE*SG4_LEV2SIZE*sizeof(st_entry_t))
+#endif
+/*
+ * AMIGA_MAX_COREUPT	maximum number of incore user page tables
+ * AMIGA_USER_PTSIZE	the number of bytes for user pagetables
+ * AMIGA_PTBASE		the VA start of the map from which upt's are allocated
+ * AMIGA_PTSIZE		the size of the map from which upt's are allocated
+ * AMIGA_KPTSIZE	size of kernel page table
+ * AMIGA_MAX_KPTSIZE	the most number of bytes for kpt pages
+ * AMIGA_MAX_PTSIZE	the number of bytes to map everything
+ */
+#define AMIGA_MAX_COREUPT	1024
+#define AMIGA_UPTSIZE		roundup(VM_MAXUSER_ADDRESS / NPTEPG, NBPG)
+#define AMIGA_UPTBASE		0x10000000
+#define AMIGA_UPTMAXSIZE \
+    roundup((AMIGA_MAX_COREUPT * AMIGA_UPTSIZE), NBPG)
+#define AMIGA_MAX_KPTSIZE \
+    (AMIGA_MAX_COREUPT * AMIGA_UPTSIZE / NPTEPG)
+#define AMIGA_KPTSIZE \
+    roundup((VM_MAX_KERNEL_ADDRESS - VM_MIN_KERNEL_ADDRESS) / NPTEPG, NBPG)
+#define AMIGA_MAX_PTSIZE	roundup(0xffffffff / NPTEPG, NBPG)
+
+/*
+ * Kernel virtual address to page table entry and to physical address.
+ */
+#define	kvtopte(va) \
+	(&Sysmap[((unsigned)(va) - VM_MIN_KERNEL_ADDRESS) >> PGSHIFT])
+#define	ptetokv(pt) \
+	((((u_int *)(pt) - Sysmap) << PGSHIFT) + VM_MIN_KERNEL_ADDRESS)
+#define	kvtophys(va) \
+	((kvtopte(va)->pg_pfnum << PGSHIFT) | ((int)(va) & PGOFSET))
+
+
+#endif /* !_MACHINE_PTE_H_ */