67 lines
1.4 KiB
C
67 lines
1.4 KiB
C
// SPDX-License-Identifier: GPL-2.0-or-later
|
|
/*
|
|
* linux/arch/arm/kernel/isa.c
|
|
*
|
|
* Copyright (C) 1999 Phil Blundell
|
|
*
|
|
* 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 struct 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 struct ctl_table ctl_isa[2] = {
|
|
{
|
|
.procname = "isa",
|
|
.mode = 0555,
|
|
.child = ctl_isa_vars,
|
|
}, {}
|
|
};
|
|
|
|
static struct 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);
|
|
}
|