// 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 __initregister_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);}