update from Andrew

1 files changed, 98 insertions, 0 deletions

diff --git a/sim/ppc/hw_iobus.c b/sim/ppc/hw_iobus.c
new file mode 100644
index 0000000..5001223
--- /dev/null
+++ b/sim/ppc/hw_iobus.c
@@ -0,0 +1,98 @@
+/*  This file is part of the program psim.
+
+    Copyright (C) 1994-1996, Andrew Cagney <cagney@highland.com.au>
+
+    This program is free software; you can redistribute it and/or modify
+    it under the terms of the GNU General Public License as published by
+    the Free Software Foundation; either version 2 of the License, or
+    (at your option) any later version.
+
+    This program is distributed in the hope that it will be useful,
+    but WITHOUT ANY WARRANTY; without even the implied warranty of
+    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+    GNU General Public License for more details.
+ 
+    You should have received a copy of the GNU General Public License
+    along with this program; if not, write to the Free Software
+    Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
+ 
+    */
+
+
+#ifndef _HW_IOBUS_C_
+#define _HW_IOBUS_C_
+
+#ifndef STATIC_INLINE_HW_IOBUS
+#define STATIC_INLINE_HW_IOBUS STATIC_INLINE
+#endif
+
+#include "device_table.h"
+
+
+/* Device:
+
+   iobus@<address> - bus for attaching devices
+
+
+   Description:
+
+   IOBUS provides a simple `local' bus for attaching (hanging)
+   programmed IO devices from.  All child devices are mapped into this
+   devices parent address space (after adjusting for the iobus's base
+   address).
+
+   
+   Properties:
+
+   None.
+
+   */
+
+static void
+hw_iobus_attach_address_callback(device *me,
+			      const char *name,
+			      attach_type type,
+			      int space,
+			      unsigned_word addr,
+			      unsigned nr_bytes,
+			      access_type access,
+			      device *who) /*callback/default*/
+{
+  unsigned_word hw_iobus_addr;
+  /* sanity check */
+  if (space != 0)
+    error("hw_iobus_attach_address_callback() no space for %s/%s\n",
+	  device_name(me), name);
+  /* get the bus address */
+  if (device_unit_address(me)->nr_cells != 1)
+    error("hw_iobus_attach_address_callback() invalid address for %s\n",
+	  device_name(me));
+  hw_iobus_addr = device_unit_address(me)->cells[0];
+  device_attach_address(device_parent(me),
+			device_name(me),
+			type,
+			0 /*space*/,
+			hw_iobus_addr + addr,
+			nr_bytes,
+			access,
+			who);
+}
+
+
+static device_callbacks const hw_iobus_callbacks = {
+  { NULL, },
+  { hw_iobus_attach_address_callback, },
+  { NULL, }, /* IO */
+  { NULL, }, /* DMA */
+  { NULL, }, /* interrupt */
+  { generic_device_unit_decode,
+    generic_device_unit_encode, }
+};
+
+
+const device_descriptor hw_iobus_device_descriptor[] = {
+  { "iobus", NULL, &hw_iobus_callbacks },
+  { NULL, },
+};
+
+#endif /* _HW_IOBUS_ */