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| // 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);
| }
|
|
