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1/*
2 * ISA Plug & Play support
3 * Copyright (c) by Jaroslav Kysela <perex@perex.cz>
4 *
5 * This program is free software; you can redistribute it and/or modify
6 * it under the terms of the GNU General Public License as published by
7 * the Free Software Foundation; either version 2 of the License, or
8 * (at your option) any later version.
9 *
10 * This program is distributed in the hope that it will be useful,
11 * but WITHOUT ANY WARRANTY; without even the implied warranty of
12 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
13 * GNU General Public License for more details.
14 *
15 * You should have received a copy of the GNU General Public License
16 * along with this program; if not, write to the Free Software
17 * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
18 */
19
20#include <linux/module.h>
21#include <linux/isapnp.h>
22#include <linux/proc_fs.h>
23#include <linux/init.h>
24#include <asm/uaccess.h>
25
26extern struct pnp_protocol isapnp_protocol;
27
28static struct proc_dir_entry *isapnp_proc_bus_dir = NULL;
29
30static loff_t isapnp_proc_bus_lseek(struct file *file, loff_t off, int whence)
31{
32 return fixed_size_llseek(file, off, whence, 256);
33}
34
35static ssize_t isapnp_proc_bus_read(struct file *file, char __user * buf,
36 size_t nbytes, loff_t * ppos)
37{
38 struct pnp_dev *dev = PDE_DATA(file_inode(file));
39 int pos = *ppos;
40 int cnt, size = 256;
41
42 if (pos >= size)
43 return 0;
44 if (nbytes >= size)
45 nbytes = size;
46 if (pos + nbytes > size)
47 nbytes = size - pos;
48 cnt = nbytes;
49
50 if (!access_ok(VERIFY_WRITE, buf, cnt))
51 return -EINVAL;
52
53 isapnp_cfg_begin(dev->card->number, dev->number);
54 for (; pos < 256 && cnt > 0; pos++, buf++, cnt--) {
55 unsigned char val;
56 val = isapnp_read_byte(pos);
57 __put_user(val, buf);
58 }
59 isapnp_cfg_end();
60
61 *ppos = pos;
62 return nbytes;
63}
64
65static const struct file_operations isapnp_proc_bus_file_operations = {
66 .owner = THIS_MODULE,
67 .llseek = isapnp_proc_bus_lseek,
68 .read = isapnp_proc_bus_read,
69};
70
71static int isapnp_proc_attach_device(struct pnp_dev *dev)
72{
73 struct pnp_card *bus = dev->card;
74 struct proc_dir_entry *de, *e;
75 char name[16];
76
77 if (!(de = bus->procdir)) {
78 sprintf(name, "%02x", bus->number);
79 de = bus->procdir = proc_mkdir(name, isapnp_proc_bus_dir);
80 if (!de)
81 return -ENOMEM;
82 }
83 sprintf(name, "%02x", dev->number);
84 e = dev->procent = proc_create_data(name, S_IFREG | S_IRUGO, de,
85 &isapnp_proc_bus_file_operations, dev);
86 if (!e)
87 return -ENOMEM;
88 proc_set_size(e, 256);
89 return 0;
90}
91
92int __init isapnp_proc_init(void)
93{
94 struct pnp_dev *dev;
95
96 isapnp_proc_bus_dir = proc_mkdir("bus/isapnp", NULL);
97 protocol_for_each_dev(&isapnp_protocol, dev) {
98 isapnp_proc_attach_device(dev);
99 }
100 return 0;
101}
1/*
2 * ISA Plug & Play support
3 * Copyright (c) by Jaroslav Kysela <perex@perex.cz>
4 *
5 * This program is free software; you can redistribute it and/or modify
6 * it under the terms of the GNU General Public License as published by
7 * the Free Software Foundation; either version 2 of the License, or
8 * (at your option) any later version.
9 *
10 * This program is distributed in the hope that it will be useful,
11 * but WITHOUT ANY WARRANTY; without even the implied warranty of
12 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
13 * GNU General Public License for more details.
14 *
15 * You should have received a copy of the GNU General Public License
16 * along with this program; if not, write to the Free Software
17 * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
18 */
19
20#include <linux/module.h>
21#include <linux/isapnp.h>
22#include <linux/proc_fs.h>
23#include <linux/init.h>
24#include <asm/uaccess.h>
25
26extern struct pnp_protocol isapnp_protocol;
27
28static struct proc_dir_entry *isapnp_proc_bus_dir = NULL;
29
30static loff_t isapnp_proc_bus_lseek(struct file *file, loff_t off, int whence)
31{
32 loff_t new = -1;
33 struct inode *inode = file->f_path.dentry->d_inode;
34
35 mutex_lock(&inode->i_mutex);
36 switch (whence) {
37 case 0:
38 new = off;
39 break;
40 case 1:
41 new = file->f_pos + off;
42 break;
43 case 2:
44 new = 256 + off;
45 break;
46 }
47 if (new < 0 || new > 256)
48 new = -EINVAL;
49 else
50 file->f_pos = new;
51 mutex_unlock(&inode->i_mutex);
52 return new;
53}
54
55static ssize_t isapnp_proc_bus_read(struct file *file, char __user * buf,
56 size_t nbytes, loff_t * ppos)
57{
58 struct inode *ino = file->f_path.dentry->d_inode;
59 struct proc_dir_entry *dp = PDE(ino);
60 struct pnp_dev *dev = dp->data;
61 int pos = *ppos;
62 int cnt, size = 256;
63
64 if (pos >= size)
65 return 0;
66 if (nbytes >= size)
67 nbytes = size;
68 if (pos + nbytes > size)
69 nbytes = size - pos;
70 cnt = nbytes;
71
72 if (!access_ok(VERIFY_WRITE, buf, cnt))
73 return -EINVAL;
74
75 isapnp_cfg_begin(dev->card->number, dev->number);
76 for (; pos < 256 && cnt > 0; pos++, buf++, cnt--) {
77 unsigned char val;
78 val = isapnp_read_byte(pos);
79 __put_user(val, buf);
80 }
81 isapnp_cfg_end();
82
83 *ppos = pos;
84 return nbytes;
85}
86
87static const struct file_operations isapnp_proc_bus_file_operations = {
88 .owner = THIS_MODULE,
89 .llseek = isapnp_proc_bus_lseek,
90 .read = isapnp_proc_bus_read,
91};
92
93static int isapnp_proc_attach_device(struct pnp_dev *dev)
94{
95 struct pnp_card *bus = dev->card;
96 struct proc_dir_entry *de, *e;
97 char name[16];
98
99 if (!(de = bus->procdir)) {
100 sprintf(name, "%02x", bus->number);
101 de = bus->procdir = proc_mkdir(name, isapnp_proc_bus_dir);
102 if (!de)
103 return -ENOMEM;
104 }
105 sprintf(name, "%02x", dev->number);
106 e = dev->procent = proc_create_data(name, S_IFREG | S_IRUGO, de,
107 &isapnp_proc_bus_file_operations, dev);
108 if (!e)
109 return -ENOMEM;
110 e->size = 256;
111 return 0;
112}
113
114int __init isapnp_proc_init(void)
115{
116 struct pnp_dev *dev;
117
118 isapnp_proc_bus_dir = proc_mkdir("bus/isapnp", NULL);
119 protocol_for_each_dev(&isapnp_protocol, dev) {
120 isapnp_proc_attach_device(dev);
121 }
122 return 0;
123}