linux/arch/x86/kernel/cpu/mtrr/if.c

// SPDX-License-Identifier: GPL-2.0
#include <linux/capability.h>
#include <linux/seq_file.h>
#include <linux/uaccess.h>
#include <linux/proc_fs.h>
#include <linux/ctype.h>
#include <linux/string.h>
#include <linux/slab.h>
#include <linux/init.h>

#define LINE_SIZE …

#include <asm/mtrr.h>

#include "mtrr.h"

#define FILE_FCOUNT(f) …

static const char *const mtrr_strings[MTRR_NUM_TYPES] = …;

const char *mtrr_attrib_to_str(int x)
{ … }

#ifdef CONFIG_PROC_FS

static int
mtrr_file_add(unsigned long base, unsigned long size,
	      unsigned int type, bool increment, struct file *file, int page)
{ … }

static int
mtrr_file_del(unsigned long base, unsigned long size,
	      struct file *file, int page)
{ … }

/*
 * seq_file can seek but we ignore it.
 *
 * Format of control line:
 *    "base=%Lx size=%Lx type=%s" or "disable=%d"
 */
static ssize_t
mtrr_write(struct file *file, const char __user *buf, size_t len, loff_t * ppos)
{ … }

static long
mtrr_ioctl(struct file *file, unsigned int cmd, unsigned long __arg)
{ … }

static int mtrr_close(struct inode *ino, struct file *file)
{ … }

static int mtrr_seq_show(struct seq_file *seq, void *offset)
{ … }

static int mtrr_open(struct inode *inode, struct file *file)
{ … }

static const struct proc_ops mtrr_proc_ops = …;

static int __init mtrr_if_init(void)
{ … }
arch_initcall(mtrr_if_init);
#endif			/*  CONFIG_PROC_FS  */