linux/drivers/pci/proc.c

// SPDX-License-Identifier: GPL-2.0
/*
 * Procfs interface for the PCI bus
 *
 * Copyright (c) 1997--1999 Martin Mares <[email protected]>
 */

#include <linux/init.h>
#include <linux/pci.h>
#include <linux/slab.h>
#include <linux/module.h>
#include <linux/proc_fs.h>
#include <linux/seq_file.h>
#include <linux/capability.h>
#include <linux/uaccess.h>
#include <linux/security.h>
#include <asm/byteorder.h>
#include "pci.h"

static int proc_initialized;	/* = 0 */

static loff_t proc_bus_pci_lseek(struct file *file, loff_t off, int whence)
{ … }

static ssize_t proc_bus_pci_read(struct file *file, char __user *buf,
				 size_t nbytes, loff_t *ppos)
{ … }

static ssize_t proc_bus_pci_write(struct file *file, const char __user *buf,
				  size_t nbytes, loff_t *ppos)
{ … }

#ifdef HAVE_PCI_MMAP
struct pci_filp_private { … };
#endif /* HAVE_PCI_MMAP */

static long proc_bus_pci_ioctl(struct file *file, unsigned int cmd,
			       unsigned long arg)
{ … }

#ifdef HAVE_PCI_MMAP
static int proc_bus_pci_mmap(struct file *file, struct vm_area_struct *vma)
{ … }

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

static int proc_bus_pci_release(struct inode *inode, struct file *file)
{ … }
#endif /* HAVE_PCI_MMAP */

static const struct proc_ops proc_bus_pci_ops = …;

/* iterator */
static void *pci_seq_start(struct seq_file *m, loff_t *pos)
{ … }

static void *pci_seq_next(struct seq_file *m, void *v, loff_t *pos)
{ … }

static void pci_seq_stop(struct seq_file *m, void *v)
{ … }

static int show_device(struct seq_file *m, void *v)
{ … }

static const struct seq_operations proc_bus_pci_devices_op = …;

static struct proc_dir_entry *proc_bus_pci_dir;

int pci_proc_attach_device(struct pci_dev *dev)
{ … }

int pci_proc_detach_device(struct pci_dev *dev)
{ … }

int pci_proc_detach_bus(struct pci_bus *bus)
{ … }

static int __init pci_proc_init(void)
{ … }
device_initcall(pci_proc_init);