1 /*
2 * Copyright (C) 2004, 2005 by Basler Vision Technologies AG
3 * Author: Thomas Koeller <thomas.koeller@baslerweb.com>
4 *
5 * Procfs support for Basler eXcite
6 *
7 * This program is free software; you can redistribute it and/or modify
8 * it under the terms of the GNU General Public License as published by
9 * the Free Software Foundation; either version 2 of the License, or
10 * (at your option) any later version.
11 *
12 * This program is distributed in the hope that it will be useful,
13 * but WITHOUT ANY WARRANTY; without even the implied warranty of
14 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
15 * GNU General Public License for more details.
16 *
17 * You should have received a copy of the GNU General Public License
18 * along with this program; if not, write to the Free Software
19 * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
20 */
21 #include <linux/module.h>
22 #include <linux/proc_fs.h>
23 #include <linux/seq_file.h>
24 #include <linux/stat.h>
25 #include <asm/page.h>
26 #include <asm/io.h>
27 #include <asm/system.h>
28 #include <asm/rm9k-ocd.h>
29
30 #include <excite.h>
31
excite_unit_id_proc_show(struct seq_file * m,void * v)32 static int excite_unit_id_proc_show(struct seq_file *m, void *v)
33 {
34 seq_printf(m, "%06x", unit_id);
35 return 0;
36 }
37
excite_unit_id_proc_open(struct inode * inode,struct file * file)38 static int excite_unit_id_proc_open(struct inode *inode, struct file *file)
39 {
40 return single_open(file, excite_unit_id_proc_show, NULL);
41 }
42
43 static const struct file_operations excite_unit_id_proc_fops = {
44 .owner = THIS_MODULE,
45 .open = excite_unit_id_proc_open,
46 .read = seq_read,
47 .llseek = seq_lseek,
48 .release = single_release,
49 };
50
51 static int
excite_bootrom_read(char * page,char ** start,off_t off,int count,int * eof,void * data)52 excite_bootrom_read(char *page, char **start, off_t off, int count,
53 int *eof, void *data)
54 {
55 void __iomem * src;
56
57 if (off >= EXCITE_SIZE_BOOTROM) {
58 *eof = 1;
59 return 0;
60 }
61
62 if ((off + count) > EXCITE_SIZE_BOOTROM)
63 count = EXCITE_SIZE_BOOTROM - off;
64
65 src = ioremap(EXCITE_PHYS_BOOTROM + off, count);
66 if (src) {
67 memcpy_fromio(page, src, count);
68 iounmap(src);
69 *start = page;
70 } else {
71 count = -ENOMEM;
72 }
73
74 return count;
75 }
76
excite_procfs_init(void)77 void excite_procfs_init(void)
78 {
79 /* Create & populate /proc/excite */
80 struct proc_dir_entry * const pdir = proc_mkdir("excite", NULL);
81 if (pdir) {
82 struct proc_dir_entry * e;
83
84 e = proc_create("unit_id", S_IRUGO, pdir,
85 &excite_unit_id_proc_fops);
86 if (e) e->size = 6;
87
88 e = create_proc_read_entry("bootrom", S_IRUGO, pdir,
89 excite_bootrom_read, NULL);
90 if (e) e->size = EXCITE_SIZE_BOOTROM;
91 }
92 }
93