Merge in big portions of the improvements NetBSD did to their alpha port.

Highlights: UVM, PMAP_NEW, bus_dma (only on some buses for now), new hardware
support, possiblity for ELF, etc, etc. Too much to mention.

This is still work in progress. video consoles might be broken, otherwise
we have basically the same functionality as before plus more.

1 files changed, 57 insertions, 0 deletions

diff --git a/sys/arch/alpha/pci/pci_sgmap_pte64.h b/sys/arch/alpha/pci/pci_sgmap_pte64.h
new file mode 100644
index 00000000000..ac031078df4
--- /dev/null
+++ b/sys/arch/alpha/pci/pci_sgmap_pte64.h
@@ -0,0 +1,57 @@
+/* $NetBSD: pci_sgmap_pte64.h,v 1.2 1997/06/06 23:59:29 thorpej Exp $ */
+
+/*-
+ * Copyright (c) 1997 The NetBSD Foundation, Inc.
+ * All rights reserved.
+ *
+ * This code is derived from software contributed to The NetBSD Foundation
+ * by Jason R. Thorpe of the Numerical Aerospace Simulation Facility,
+ * NASA Ames Research Center.
+ *
+ * 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 NetBSD
+ *	Foundation, Inc. and its contributors.
+ * 4. Neither the name of The NetBSD Foundation 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 NETBSD FOUNDATION, INC. 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 FOUNDATION 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.
+ */
+
+#define	SGMAP_TYPE		pci_sgmap_pte64
+#define	SGMAP_PTE_TYPE		u_int64_t
+#define	SGMAP_PTE_SPACING	1
+
+/*
+ * A 64-bit PCI SGMAP page table entry looks like this:
+ *
+ * 63                           n+1 n             1   0
+ * |                               | Page address | V |
+ *
+ * The page address is bits <n:13> of the physical address of the
+ * page.  The V bit is set if the PTE holds a valid mapping. 
+ */
+#define SGPTE_PGADDR_SHIFT      12
+#define SGPTE_VALID             0x0000000000000001UL
+
+#include <alpha/common/sgmapvar.h>
+#include <alpha/common/sgmap_typedep.h>