[gnumach]/Changelog
2006-01-08  Samuel Thibault  <samuel.thibault@ens-lyon.org>

	Add an "io" device that represents all IO ports.

	* Makefile.in: Added io.c to device-files and objfiles.
	* device/io.c: New file.
	(iodevice): New variable
	(ioopen): New function.
	(ioclose): Likewise.
	* i386/i386/iopb.c (io_bitmap_set): Treat special (-1) bit list
	as "all ports".
	(io_bitmap_clear): Likewise.
	* conf.c (ioopen, ioclose): Extern declaration.
	(ioname): New macro.
	(dev_name_list): Added member entry for `io'.

Index: Makefile.in
===================================================================
RCS file: /cvsroot/hurd/gnumach/Makefile.in,v
retrieving revision 1.31.2.2
diff -u -r1.31.2.2 Makefile.in
--- gnumach-mine-5-io_per_task/Makefile.in	12 Jul 2005 23:01:06 -0000	1.31.2.2
+++ gnumach-mine-6-io_device/Makefile.in	8 Jan 2006 18:17:24 -0000
@@ -120,7 +120,7 @@
 	buf.h cirbuf.h conf.h cons.h dev_hdr.h dev_master.h device_port.h \
 	device_types_kernel.h ds_routines.h errno.h if_ether.h if_hdr.h \
 	io_req.h kmsg.c kmsg.h net_io.h param.h tty.h memory_object_reply.cli \
-	dev_forward.defs device_pager.srv device_reply.cli device.srv
+	dev_forward.defs device_pager.srv device_reply.cli device.srv io.c
 
 # IPC implementation
 ipc-cfiles = $(addprefix ipc_,$(ipc-names)) \
@@ -183,7 +183,7 @@
 # if particular drivers want the routines.
 # XXX functions in device/subrs.c should each be moved elsewhere
 objfiles += cons.o dev_lookup.o dev_name.o dev_pager.o device_init.o \
-	ds_routines.o subrs.o net_io.o blkio.o chario.o
+	ds_routines.o subrs.o net_io.o blkio.o chario.o io.o
 ifeq ($(enable_kmsg),yes)
 objfiles += kmsg.o
 endif
Index: device/io.c
===================================================================
RCS file: device/io.c
diff -N device/io.c
--- /dev/null	1 Jan 1970 00:00:00 -0000
+++ gnumach-mine-6-io_device/device/io.c	8 Jan 2006 18:45:05 -0000
@@ -0,0 +1,47 @@
+/*
+ *  Copyright (C) 2006 Samuel Thibault <samuel.thibault@ens-lyon.org>
+ *
+ * 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 the program ; if not, write to the Free Software
+ * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
+ */
+
+#include <device/io_req.h>
+
+#include <machine/io_port.h>
+
+/*
+ * Special "all I/O ports" device.
+ */
+
+static mach_device_t iodevice = 0;
+
+int ioopen(dev, flag, ior)
+	int dev;
+	int flag;
+	io_req_t ior;
+{
+	iodevice = ior->io_device;
+
+	io_port_create(iodevice, (io_reg_t *)(-1));
+	return (0);
+}
+
+int ioclose(dev, flags)
+	int dev;
+	int flags;
+{
+	io_port_destroy(iodevice);
+	iodevice = 0;
+	return 0;
+}
Index: i386/i386/iopb.c
===================================================================
RCS file: /cvsroot/hurd/gnumach/i386/i386/Attic/iopb.c,v
retrieving revision 1.1.1.1
diff -u -r1.1.1.1 iopb.c
--- gnumach-mine-5-io_per_task/i386/i386/iopb.c	25 Feb 1997 21:27:09 -0000	1.1.1.1
+++ gnumach-mine-6-io_device/i386/i386/iopb.c	8 Jan 2006 18:17:24 -0000
@@ -129,9 +129,12 @@
 {
 	io_reg_t	io_bit;
 
-	while ((io_bit = *bit_list++) != IO_REG_NULL) {
-	    bp[io_bit>>3] &= ~(1 << (io_bit & 0x7));
-	}
+	if (bit_list == (io_reg_t *)(-1))
+		memset(bp, 0, IOPB_BYTES);
+	else
+		while ((io_bit = *bit_list++) != IO_REG_NULL) {
+		    bp[io_bit>>3] &= ~(1 << (io_bit & 0x7));
+		}
 }
 
 /*
@@ -144,9 +147,12 @@
 {
 	io_reg_t	io_bit;
 
-	while ((io_bit = *bit_list++) != IO_REG_NULL) {
-	    bp[io_bit>>3] |= (1 << (io_bit & 0x7));
-	}
+	if (bit_list == (io_reg_t *)(-1))
+		memset(bp, ~0, IOPB_BYTES);
+	else
+		while ((io_bit = *bit_list++) != IO_REG_NULL) {
+		    bp[io_bit>>3] |= (1 << (io_bit & 0x7));
+		}
 }
 
 /*
Index: i386/i386at/conf.c
===================================================================
RCS file: /cvsroot/hurd/gnumach/i386/i386at/Attic/conf.c,v
retrieving revision 1.4
diff -u -r1.4 conf.c
--- gnumach-mine-5-io_per_task/i386/i386at/conf.c	5 Apr 2001 06:39:21 -0000	1.4
+++ gnumach-mine-6-io_device/i386/i386at/conf.c	8 Jan 2006 18:17:25 -0000
@@ -182,6 +182,9 @@
 extern vm_offset_t ioplmmap();
 #define	ioplname		"iopl"
 
+extern int	ioopen(), ioclose();
+#define ioname			"io"
+
 extern int	kmsgopen(), kmsgclose(), kmsgread(), kmsggetstat();
 #define kmsgname		"kmsg"
 
@@ -367,6 +370,11 @@
 	  nodev,	nulldev,	nulldev,	0,
 	  nodev },
 
+	{ ioname,	ioopen,		ioclose,	nodev,
+	  nodev,	nodev,		nodev,		nodev,
+	  nodev,	nulldev,	nulldev,	0,
+	  nodev },
+
 #if 0
 #if	NHD > 0
 	{ pchdname,     pchdopen,      	hdclose,	pchdread,