2 * ISA Plug & Play support
3 * Copyright (c) by Jaroslav Kysela <perex@suse.cz>
6 * This program is free software; you can redistribute it and/or modify
7 * it under the terms of the GNU General Public License as published by
8 * the Free Software Foundation; either version 2 of the License, or
9 * (at your option) any later version.
11 * This program is distributed in the hope that it will be useful,
12 * but WITHOUT ANY WARRANTY; without even the implied warranty of
13 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
14 * GNU General Public License for more details.
16 * You should have received a copy of the GNU General Public License
17 * along with this program; if not, write to the Free Software
18 * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
22 #include <linux/config.h>
23 #include <linux/module.h>
24 #include <linux/isapnp.h>
25 #include <linux/proc_fs.h>
26 #include <linux/init.h>
27 #include <linux/smp_lock.h>
28 #include <asm/uaccess.h>
30 extern struct pnp_protocol isapnp_protocol;
32 static struct proc_dir_entry *isapnp_proc_bus_dir = NULL;
34 static loff_t isapnp_proc_bus_lseek(struct file *file, loff_t off, int whence)
44 new = file->f_pos + off;
50 if (new < 0 || new > 256) {
55 return (file->f_pos = new);
58 static ssize_t isapnp_proc_bus_read(struct file *file, char __user *buf, size_t nbytes, loff_t *ppos)
60 struct inode *ino = file->f_dentry->d_inode;
61 struct proc_dir_entry *dp = PDE(ino);
62 struct pnp_dev *dev = dp->data;
70 if (pos + nbytes > size)
74 if (!access_ok(VERIFY_WRITE, buf, cnt))
77 isapnp_cfg_begin(dev->card->number, dev->number);
78 for ( ; pos < 256 && cnt > 0; pos++, buf++, cnt--) {
80 val = isapnp_read_byte(pos);
89 static struct file_operations isapnp_proc_bus_file_operations =
91 .llseek = isapnp_proc_bus_lseek,
92 .read = isapnp_proc_bus_read,
95 static int isapnp_proc_attach_device(struct pnp_dev *dev)
97 struct pnp_card *bus = dev->card;
98 struct proc_dir_entry *de, *e;
101 if (!(de = bus->procdir)) {
102 sprintf(name, "%02x", bus->number);
103 de = bus->procdir = proc_mkdir(name, isapnp_proc_bus_dir);
107 sprintf(name, "%02x", dev->number);
108 e = dev->procent = create_proc_entry(name, S_IFREG | S_IRUGO, de);
111 e->proc_fops = &isapnp_proc_bus_file_operations;
112 e->owner = THIS_MODULE;
119 static int __exit isapnp_proc_detach_device(struct pnp_dev *dev)
121 struct pnp_card *bus = dev->card;
122 struct proc_dir_entry *de;
125 if (!(de = bus->procdir))
127 sprintf(name, "%02x", dev->number);
128 remove_proc_entry(name, de);
132 static int __exit isapnp_proc_detach_bus(struct pnp_card *bus)
134 struct proc_dir_entry *de;
137 if (!(de = bus->procdir))
139 sprintf(name, "%02x", bus->number);
140 remove_proc_entry(name, isapnp_proc_bus_dir);
145 int __init isapnp_proc_init(void)
148 isapnp_proc_bus_dir = proc_mkdir("isapnp", proc_bus);
149 protocol_for_each_dev(&isapnp_protocol,dev) {
150 isapnp_proc_attach_device(dev);
156 int __exit isapnp_proc_done(void)
159 struct pnp_bus *card;
161 isapnp_for_each_dev(dev) {
162 isapnp_proc_detach_device(dev);
164 isapnp_for_each_card(card) {
165 isapnp_proc_detach_bus(card);
167 if (isapnp_proc_bus_dir)
168 remove_proc_entry("isapnp", proc_bus);