// 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 const struct ctl_table ctl_isa_vars[] = {
        {
                .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;

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("bus/isa", ctl_isa_vars);
}