Bring in NetBSD code used in the PowerPC port.

Reviewed by:	obrien, dfr
Obtained from:	NetBSD

1 files changed, 112 insertions, 0 deletions

diff --git a/sys/powerpc/include/pte.h b/sys/powerpc/include/pte.h
new file mode 100644
index 0000000..3d1ddcf
--- /dev/null
+++ b/sys/powerpc/include/pte.h
@@ -0,0 +1,112 @@
+/*-
+ * Copyright (C) 1995, 1996 Wolfgang Solfrank.
+ * Copyright (C) 1995, 1996 TooLs GmbH.
+ * 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 TooLs GmbH.
+ * 4. The name of TooLs GmbH may not be used to endorse or promote products
+ *    derived from this software without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY TOOLS GMBH ``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 TOOLS GMBH 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.
+ *
+ *	$NetBSD: pte.h,v 1.2 1998/08/31 14:43:40 tsubai Exp $
+ * $FreeBSD$
+ */
+
+#ifndef	_MACHINE_PTE_H_
+#define	_MACHINE_PTE_H_
+
+/*
+ * Page Table Entries
+ */
+#ifndef	LOCORE
+#include <sys/queue.h>
+
+struct pte {
+	u_int pte_hi;
+	u_int pte_lo;
+};
+#endif	/* LOCORE */
+/* High word: */
+#define	PTE_VALID	0x80000000
+#define	PTE_VSID_SHFT	7
+#define	PTE_HID		0x00000040
+#define	PTE_API		0x0000003f
+/* Low word: */
+#define	PTE_RPGN	0xfffff000
+#define	PTE_REF		0x00000100
+#define	PTE_CHG		0x00000080
+#define	PTE_WIMG	0x00000078
+#define	PTE_W		0x00000040
+#define	PTE_I		0x00000020
+#define	PTE_M		0x00000010
+#define	PTE_G		0x00000008
+#define	PTE_PP		0x00000003
+#define	PTE_RO		0x00000003
+#define	PTE_RW		0x00000002
+
+#ifndef	LOCORE
+typedef	struct pte pte_t;
+#endif	/* LOCORE */
+
+/*
+ * Extract bits from address
+ */
+#define	ADDR_SR_SHFT	28
+#define	ADDR_PIDX	0x0ffff000
+#define	ADDR_PIDX_SHFT	12
+#define	ADDR_API_SHFT	22
+#define	ADDR_POFF	0x00000fff
+
+#ifndef	LOCORE
+#ifdef	_KERNEL
+extern pte_t *ptable;
+extern int ptab_cnt;
+#endif	/* _KERNEL */
+#endif	/* LOCORE */
+
+/*
+ * Bits in DSISR:
+ */
+#define	DSISR_DIRECT	0x80000000
+#define	DSISR_NOTFOUND	0x40000000
+#define	DSISR_PROTECT	0x08000000
+#define	DSISR_INVRX	0x04000000
+#define	DSISR_STORE	0x02000000
+#define	DSISR_DABR	0x00400000
+#define	DSISR_SEGMENT	0x00200000
+#define	DSISR_EAR	0x00100000
+
+/*
+ * Bits in SRR1 on ISI:
+ */
+#define	ISSRR1_NOTFOUND	0x40000000
+#define	ISSRR1_DIRECT	0x10000000
+#define	ISSRR1_PROTECT	0x08000000
+#define	ISSRR1_SEGMENT	0x00200000
+
+#ifdef	_KERNEL
+#ifndef	LOCORE
+extern u_int dsisr __P((void));
+#endif	/* _KERNEL */
+#endif	/* LOCORE */
+#endif	/* _MACHINE_PTE_H_ */