From 849369d6c66d3054688672f97d31fceb8e8230fb Mon Sep 17 00:00:00 2001
From: root <root@artemis.panaceas.org>
Date: Fri, 25 Dec 2015 04:40:36 +0000
Subject: initial_commit

---
 arch/arm/kernel/isa.c | 70 +++++++++++++++++++++++++++++++++++++++++++++++++++
 1 file changed, 70 insertions(+)
 create mode 100644 arch/arm/kernel/isa.c

(limited to 'arch/arm/kernel/isa.c')

diff --git a/arch/arm/kernel/isa.c b/arch/arm/kernel/isa.c
new file mode 100644
index 00000000..34648591
--- /dev/null
+++ b/arch/arm/kernel/isa.c
@@ -0,0 +1,70 @@
+/*
+ *  linux/arch/arm/kernel/isa.c
+ *
+ *  Copyright (C) 1999 Phil Blundell
+ *
+ * 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.
+ *
+ *  ISA shared memory and I/O port support, and is required to support
+ *  iopl, inb, outb and friends in userspace via glibc emulation.
+ */
+#include <linux/stddef.h>
+#include <linux/types.h>
+#include <linux/fs.h>
+#include <linux/sysctl.h>
+#include <linux/init.h>
+#include <linux/io.h>
+
+static unsigned int isa_membase, isa_portbase, isa_portshift;
+
+static ctl_table ctl_isa_vars[4] = {
+	{
+		.procname	= "membase",
+		.data		= &isa_membase, 
+		.maxlen		= sizeof(isa_membase),
+		.mode		= 0444,
+		.proc_handler	= proc_dointvec,
+	}, {
+		.procname	= "portbase",
+		.data		= &isa_portbase, 
+		.maxlen		= sizeof(isa_portbase),
+		.mode		= 0444,
+		.proc_handler	= proc_dointvec,
+	}, {
+		.procname	= "portshift",
+		.data		= &isa_portshift, 
+		.maxlen		= sizeof(isa_portshift),
+		.mode		= 0444,
+		.proc_handler	= proc_dointvec,
+	}, {}
+};
+
+static struct ctl_table_header *isa_sysctl_header;
+
+static ctl_table ctl_isa[2] = {
+	{
+		.procname	= "isa",
+		.mode		= 0555,
+		.child		= ctl_isa_vars,
+	}, {}
+};
+
+static ctl_table ctl_bus[2] = {
+	{
+		.procname	= "bus",
+		.mode		= 0555,
+		.child		= ctl_isa,
+	}, {}
+};
+
+void __init
+register_isa_ports(unsigned int membase, unsigned int portbase, unsigned int portshift)
+{
+	isa_membase = membase;
+	isa_portbase = portbase;
+	isa_portshift = portshift;
+	isa_sysctl_header = register_sysctl_table(ctl_bus);
+}
-- 
cgit v1.2.3