67 lines
1.4 KiB
C
67 lines
1.4 KiB
C
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// SPDX-License-Identifier: GPL-2.0-or-later
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/*
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* linux/arch/arm/kernel/isa.c
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*
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* Copyright (C) 1999 Phil Blundell
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*
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* ISA shared memory and I/O port support, and is required to support
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* iopl, inb, outb and friends in userspace via glibc emulation.
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*/
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#include <linux/stddef.h>
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#include <linux/types.h>
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#include <linux/fs.h>
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#include <linux/sysctl.h>
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#include <linux/init.h>
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#include <linux/io.h>
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static unsigned int isa_membase, isa_portbase, isa_portshift;
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static struct ctl_table ctl_isa_vars[4] = {
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{
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.procname = "membase",
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.data = &isa_membase,
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.maxlen = sizeof(isa_membase),
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.mode = 0444,
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.proc_handler = proc_dointvec,
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}, {
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.procname = "portbase",
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.data = &isa_portbase,
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.maxlen = sizeof(isa_portbase),
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.mode = 0444,
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.proc_handler = proc_dointvec,
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}, {
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.procname = "portshift",
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.data = &isa_portshift,
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.maxlen = sizeof(isa_portshift),
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.mode = 0444,
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.proc_handler = proc_dointvec,
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}, {}
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};
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static struct ctl_table_header *isa_sysctl_header;
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static struct ctl_table ctl_isa[2] = {
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{
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.procname = "isa",
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.mode = 0555,
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.child = ctl_isa_vars,
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}, {}
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};
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static struct ctl_table ctl_bus[2] = {
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{
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.procname = "bus",
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.mode = 0555,
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.child = ctl_isa,
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}, {}
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};
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void __init
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register_isa_ports(unsigned int membase, unsigned int portbase, unsigned int portshift)
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{
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isa_membase = membase;
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isa_portbase = portbase;
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isa_portshift = portshift;
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isa_sysctl_header = register_sysctl_table(ctl_bus);
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}
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