mirror of
https://github.com/adulau/aha.git
synced 2024-12-30 20:56:23 +00:00
80 lines
2.1 KiB
C
80 lines
2.1 KiB
C
/*
|
|
* Copyright (C) 2004, 2005 by Basler Vision Technologies AG
|
|
* Author: Thomas Koeller <thomas.koeller@baslerweb.com>
|
|
*
|
|
* Procfs support for Basler eXcite
|
|
*
|
|
* This program is free software; you can redistribute it and/or modify
|
|
* it under the terms of the GNU General Public License as published by
|
|
* the Free Software Foundation; either version 2 of the License, or
|
|
* (at your option) any later version.
|
|
*
|
|
* This program is distributed in the hope that it will be useful,
|
|
* but WITHOUT ANY WARRANTY; without even the implied warranty of
|
|
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
|
|
* GNU General Public License for more details.
|
|
*
|
|
* You should have received a copy of the GNU General Public License
|
|
* along with this program; if not, write to the Free Software
|
|
* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
|
|
*/
|
|
|
|
#include <linux/proc_fs.h>
|
|
#include <linux/stat.h>
|
|
#include <asm/page.h>
|
|
#include <asm/io.h>
|
|
#include <asm/system.h>
|
|
#include <asm/rm9k-ocd.h>
|
|
|
|
#include <excite.h>
|
|
|
|
static int excite_get_unit_id(char *buf, char **addr, off_t offs, int size)
|
|
{
|
|
const int len = snprintf(buf, PAGE_SIZE, "%06x", unit_id);
|
|
const int w = len - offs;
|
|
*addr = buf + offs;
|
|
return w < size ? w : size;
|
|
}
|
|
|
|
static int
|
|
excite_bootrom_read(char *page, char **start, off_t off, int count,
|
|
int *eof, void *data)
|
|
{
|
|
void __iomem * src;
|
|
|
|
if (off >= EXCITE_SIZE_BOOTROM) {
|
|
*eof = 1;
|
|
return 0;
|
|
}
|
|
|
|
if ((off + count) > EXCITE_SIZE_BOOTROM)
|
|
count = EXCITE_SIZE_BOOTROM - off;
|
|
|
|
src = ioremap(EXCITE_PHYS_BOOTROM + off, count);
|
|
if (src) {
|
|
memcpy_fromio(page, src, count);
|
|
iounmap(src);
|
|
*start = page;
|
|
} else {
|
|
count = -ENOMEM;
|
|
}
|
|
|
|
return count;
|
|
}
|
|
|
|
void excite_procfs_init(void)
|
|
{
|
|
/* Create & populate /proc/excite */
|
|
struct proc_dir_entry * const pdir = proc_mkdir("excite", &proc_root);
|
|
if (pdir) {
|
|
struct proc_dir_entry * e;
|
|
|
|
e = create_proc_info_entry("unit_id", S_IRUGO, pdir,
|
|
excite_get_unit_id);
|
|
if (e) e->size = 6;
|
|
|
|
e = create_proc_read_entry("bootrom", S_IRUGO, pdir,
|
|
excite_bootrom_read, NULL);
|
|
if (e) e->size = EXCITE_SIZE_BOOTROM;
|
|
}
|
|
}
|