Add mem device

	* i386/Makefrag.am (libkernel_a_SOURCES): Add
	i386/i386at/iopl.c.
	* i386/i386at/conf.c [!MACH_HYP] (memmmap): Declare function.
	(memname): Add macro.
	(dev_name_list): Add mem device.
	* i386/i386at/mem.c: New file.

3 files changed, 58 insertions, 0 deletions

diff --git a/i386/Makefrag.am b/i386/Makefrag.am
index 876761c..b2bad86 100644
--- a/i386/Makefrag.am
+++ b/i386/Makefrag.am
@@ -46,6 +46,7 @@ libkernel_a_SOURCES += \
 	i386/i386at/kd_mouse.h \
 	i386/i386at/kdasm.S \
 	i386/i386at/kdsoft.h \
+	i386/i386at/mem.c \
 	i386/i386at/pic_isa.c \
 	i386/i386at/rtc.c \
 	i386/i386at/rtc.h
diff --git a/i386/i386at/conf.c b/i386/i386at/conf.c
index f5ab36c..d51b5ee 100644
--- a/i386/i386at/conf.c
+++ b/i386/i386at/conf.c
@@ -60,6 +60,9 @@ extern int	kbdgetstat(), kbdsetstat();
 #ifndef	MACH_HYP
 extern int	mouseopen(), mouseclose(), mouseread(), mousegetstat();
 #define	mousename		"mouse"
+
+extern vm_offset_t memmmap();
+#define	memname			"mem"
 #endif	/* MACH_HYP */
 
 extern int	kmsgopen(), kmsgclose(), kmsgread(), kmsggetstat();
@@ -127,6 +130,13 @@ struct dev_ops	dev_name_list[] =
 	  nodev,	nulldev,	nulldev,	0,
 	  nodev },
 
+#ifndef	MACH_HYP
+	{ memname,	nulldev,	nulldev,	nodev,
+	  nodev,	nodev,		nodev,		memmmap,
+	  nodev,	nulldev,	nulldev,	0,
+	  nodev },
+#endif	/* MACH_HYP */
+
 #ifdef	MACH_KMSG
         { kmsgname,     kmsgopen,       kmsgclose,       kmsgread,
           nodev,        kmsggetstat,    nodev,           nomap,
diff --git a/i386/i386at/mem.c b/i386/i386at/mem.c
new file mode 100644
index 0000000..5e51676
--- /dev/null
+++ b/i386/i386at/mem.c
@@ -0,0 +1,47 @@
+/*
+ * Mach Operating System
+ * Copyright (c) 1991,1990,1989 Carnegie Mellon University
+ * All Rights Reserved.
+ *
+ * Permission to use, copy, modify and distribute this software and its
+ * documentation is hereby granted, provided that both the copyright
+ * notice and this permission notice appear in all copies of the
+ * software, derivative works or modified versions, and any portions
+ * thereof, and that both notices appear in supporting documentation.
+ *
+ * CARNEGIE MELLON ALLOWS FREE USE OF THIS SOFTWARE IN ITS "AS IS"
+ * CONDITION.  CARNEGIE MELLON DISCLAIMS ANY LIABILITY OF ANY KIND FOR
+ * ANY DAMAGES WHATSOEVER RESULTING FROM THE USE OF THIS SOFTWARE.
+ *
+ * Carnegie Mellon requests users of this software to return to
+ *
+ *  Software Distribution Coordinator  or  Software.Distribution@CS.CMU.EDU
+ *  School of Computer Science
+ *  Carnegie Mellon University
+ *  Pittsburgh PA 15213-3890
+ *
+ * any improvements or extensions that they make and grant Carnegie Mellon
+ * the rights to redistribute these changes.
+ */
+
+#include <device/io_req.h>
+#include <i386/model_dep.h>
+
+/* This provides access to any memory that is not main RAM */
+
+/*ARGSUSED*/
+int
+memmmap(dev, off, prot)
+int		dev;
+vm_offset_t	off;
+vm_prot_t	prot;
+{
+	if (off == 0)
+		return 0;
+	else if (off < 0xa0000)
+		return -1;
+	else if (off >= 0x100000 && off < phys_last_addr)
+		return -1;
+	else
+		return i386_btop(off);
+}