cachepc-linux

Fork of AMDESE/linux with modifications for CachePC side-channel attack
git clone https://git.sinitax.com/sinitax/cachepc-linux
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isa.c (1473B)

      1// SPDX-License-Identifier: GPL-2.0-or-later
      2/*
      3 *  linux/arch/arm/kernel/isa.c
      4 *
      5 *  Copyright (C) 1999 Phil Blundell
      6 *
      7 *  ISA shared memory and I/O port support, and is required to support
      8 *  iopl, inb, outb and friends in userspace via glibc emulation.
      9 */
     10#include <linux/stddef.h>
     11#include <linux/types.h>
     12#include <linux/fs.h>
     13#include <linux/sysctl.h>
     14#include <linux/init.h>
     15#include <linux/io.h>
     16
     17static unsigned int isa_membase, isa_portbase, isa_portshift;
     18
     19static struct ctl_table ctl_isa_vars[4] = {
     20	{
     21		.procname	= "membase",
     22		.data		= &isa_membase, 
     23		.maxlen		= sizeof(isa_membase),
     24		.mode		= 0444,
     25		.proc_handler	= proc_dointvec,
     26	}, {
     27		.procname	= "portbase",
     28		.data		= &isa_portbase, 
     29		.maxlen		= sizeof(isa_portbase),
     30		.mode		= 0444,
     31		.proc_handler	= proc_dointvec,
     32	}, {
     33		.procname	= "portshift",
     34		.data		= &isa_portshift, 
     35		.maxlen		= sizeof(isa_portshift),
     36		.mode		= 0444,
     37		.proc_handler	= proc_dointvec,
     38	}, {}
     39};
     40
     41static struct ctl_table_header *isa_sysctl_header;
     42
     43static struct ctl_table ctl_isa[2] = {
     44	{
     45		.procname	= "isa",
     46		.mode		= 0555,
     47		.child		= ctl_isa_vars,
     48	}, {}
     49};
     50
     51static struct ctl_table ctl_bus[2] = {
     52	{
     53		.procname	= "bus",
     54		.mode		= 0555,
     55		.child		= ctl_isa,
     56	}, {}
     57};
     58
     59void __init
     60register_isa_ports(unsigned int membase, unsigned int portbase, unsigned int portshift)
     61{
     62	isa_membase = membase;
     63	isa_portbase = portbase;
     64	isa_portshift = portshift;
     65	isa_sysctl_header = register_sysctl_table(ctl_bus);
     66}