/*
* Thomas Horsten <thh@lasat.com>
* Copyright (C) 2000 LASAT Networks A/S.
*
* This program is free software; you can distribute it and/or modify it
* under the terms of the GNU General Public License (Version 2) as
* published by the Free Software Foundation.
*
* This program is distributed in the hope 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.
*
* Routines specific to the LASAT boards
*/
#include <linux/types.h>
#include <asm/lasat/lasat.h>
#include <linux/module.h>
#include <linux/sysctl.h>
#include <linux/stddef.h>
#include <linux/init.h>
#include <linux/fs.h>
#include <linux/ctype.h>
#include <linux/string.h>
#include <linux/net.h>
#include <linux/inet.h>
#include <linux/mutex.h>
#include <asm/uaccess.h>
#include "sysctl.h"
#include "ds1603.h"
static DEFINE_MUTEX(lasat_info_mutex);
/* Strategy function to write EEPROM after changing string entry */
int sysctl_lasatstring(ctl_table *table, int *name, int nlen,
void *oldval, size_t *oldlenp,
void *newval, size_t newlen, void **context)
{
int r;
mutex_lock(&lasat_info_mutex);
r = sysctl_string(table, name,
nlen, oldval, oldlenp, newval, newlen, context);
if (r < 0) {
mutex_unlock(&lasat_info_mutex);
return r;
}
if (newval && newlen) {
lasat_write_eeprom_info();
}
mutex_unlock(&lasat_info_mutex);
return 1;
}
/* And the same for proc */
int proc_dolasatstring(ctl_table *table, int write, struct file *filp,
void *buffer, size_t *lenp, loff_t *ppos)
{
int r;
mutex_lock(&lasat_info_mutex);
r = proc_dostring(table, write, filp, buffer, lenp, ppos);
if ( (!write) || r) {
mutex_unlock(&lasat_info_mutex);
return r;
}
lasat_write_eeprom_info();
mutex_unlock(&lasat_info_mutex);
return 0;
}
/* proc function to write EEPROM after changing int entry */
int proc_dolasatint(ctl_table *table, int write, struct file *filp,
void *buffer, size_t *lenp, loff_t *ppos)
{
int r;
mutex_lock(&lasat_info_mutex);
r = proc_dointvec(table, write, filp, buffer, lenp, ppos);
if ( (!write) || r) {
mutex_unlock(&lasat_info_mutex);
return r;
}
lasat_write_eeprom_info();
mutex_unlock(&lasat_info_mutex);
return 0;
}
static int rtctmp;
#ifdef CONFIG_DS1603
/* proc function to read/write RealTime Clock */
int proc_dolasatrtc(ctl_table *table, int write, struct file *filp,
void *buffer, size_t *lenp, loff_t *ppos)
{
int r;
mutex_lock(&lasat_info_mutex);
if (!write) {
rtctmp = ds1603_read();
/* check for time < 0 and set to 0 */
if (rtctmp < 0)
rtctmp = 0;
}
r = proc_dointvec(table, write, filp, buffer, lenp, ppos);
if ( (!write) || r) {
mutex_unlock(&lasat_info_mutex);
return r;
}
ds1603_set(rtctmp);
mutex_unlock(&lasat_info_mutex);
return 0;
}
#endif
/* Sysctl for setting the IP addresses */
int sysctl_lasat_intvec(ctl_table *table, int *name, int nlen,
void *oldval, size_t *oldlenp,
void *newval, size_t newlen, void **context)
{
int r;
mutex_lock(&lasat_info_mutex);
r = sysctl_intvec(table, name, nlen, oldval, oldlenp, newval, newlen, context);
if (r < 0) {
mutex_unlock(&lasat_info_mutex);
return r;
}
if (newval && newlen) {
lasat_write_eeprom_info();
}
mutex_unlock(&lasat_info_mutex);
return 1;
}
#ifdef CONFIG_DS1603
/* Same for RTC */
int sysctl_lasat_rtc(ctl_table *table, int *name, int nlen,
void *oldval, size_t *oldlenp,
void *newval, size_t newlen, void **context)
{
int r;
mutex_lock(&lasat_info_mutex);
rtctmp = ds1603_read();
if (rtctmp < 0)
rtctmp = 0;
r = sysctl_intvec(table, name, nlen, oldval, oldlenp, newval, newlen, context);
if (r < 0) {
mutex_unlock(&lasat_info_mutex);
return r;
}
if (newval && newlen) {
ds1603_set(rtctmp);
}
mutex_unlock(&lasat_info_mutex);
return 1;
}
#endif
#ifdef CONFIG_INET
static char lasat_bcastaddr[16];
void update_bcastaddr(void)
{
unsigned int ip;
ip = (lasat_board_info.li_eeprom_info.ipaddr &
lasat_board_info.li_eeprom_info.netmask) |
~lasat_board_info.li_eeprom_info.netmask;
sprintf(lasat_bcastaddr, "%d.%d.%d.%d",
(ip ) & 0xff,
(ip >> 8) & 0xff,
(ip >> 16) & 0xff,
(ip >> 24) & 0xff);
}
static char proc_lasat_ipbuf[32];
/* Parsing of IP address */
int proc_lasat_ip(ctl_table *table, int write, struct file *filp,
void *buffer, size_t *lenp, loff_t *ppos)
{
int len;
unsigned int ip;
char *p, c;
if (!table->data || !table->maxlen || !*lenp ||
(*ppos && !write)) {
*lenp = 0;
return 0;
}
mutex_lock(&lasat_info_mutex);
if (write) {
len = 0;
p = buffer;
while (len < *lenp) {
if(get_user(c, p++)) {
mutex_unlock(&lasat_info_mutex);
return -EFAULT;
}
if (c == 0 || c == '\n')
break;
len++;
}
if (len >= sizeof(proc_lasat_ipbuf)-1)
len = sizeof(proc_lasat_ipbuf) - 1;
if (copy_from_user(proc_lasat_ipbuf, buffer, len))
{
mutex_unlock(&lasat_info_mutex);
return -EFAULT;
}
proc_lasat_ipbuf[len] = 0;
*ppos += *lenp;
/* Now see if we can convert it to a valid IP */
ip = in_aton(proc_lasat_ipbuf);
*(unsigned int *)(table->data) = ip;
lasat_write_eeprom_info();
} else {
ip = *(unsigned int *)(table->data);
sprintf(proc_lasat_ipbuf, "%d.%d.%d.%d",
(ip ) & 0xff,
(ip >> 8) & 0xff,
(ip >> 16) & 0xff,
(ip >> 24) & 0xff);
len = strlen(proc_lasat_ipbuf);
if (len > *lenp)
len = *lenp;
if (len)
if(copy_to_user(buffer, proc_lasat_ipbuf, len)) {
mutex_unlock(&lasat_info_mutex);
return -EFAULT;
}
if (len < *lenp) {
if(put_user('\n', ((char *) buffer) + len)) {
mutex_unlock(&lasat_info_mutex);
return -EFAULT;
}
len++;
}
*lenp = len;
*ppos += len;
}
update_bcastaddr();
mutex_unlock(&lasat_info_mutex);
return 0;
}
#endif /* defined(CONFIG_INET) */
static int sysctl_lasat_eeprom_value(ctl_table *table, int *name, int nlen,
void *oldval, size_t *oldlenp,
void *newval, size_t newlen,
void **context)
{
int r;
mutex_lock(&lasat_info_mutex);
r = sysctl_intvec(table, name, nlen, oldval, oldlenp, newval, newlen, context);
if (r < 0) {
mutex_unlock(&lasat_info_mutex);
return r;
}
if (newval && newlen)
{
if (name && *name == LASAT_PRID)
lasat_board_info.li_eeprom_info.prid = *(int*)newval;
lasat_write_eeprom_info();
lasat_init_board_info();
}
mutex_unlock(&lasat_info_mutex);
return 0;
}
int proc_lasat_eeprom_value(ctl_table *table, int write, struct file *filp,
void *buffer, size_t *lenp, loff_t *ppos)
{
int r;
mutex_lock(&lasat_info_mutex);
r = proc_dointvec(table, write, filp, buffer, lenp, ppos);
if ( (!write) || r) {
mutex_unlock(&lasat_info_mutex);
return r;
}
if (filp && filp->f_dentry)
{
if (!strcmp(filp->f_dentry->d_name.name, "prid"))
lasat_board_info.li_eeprom_info.prid = lasat_board_info.li_prid;
if (!strcmp(filp->f_dentry->d_name.name, "debugaccess"))
lasat_board_info.li_eeprom_info.debugaccess = lasat_board_info.li_debugaccess;
}
lasat_write_eeprom_info();
mutex_unlock(&lasat_info_mutex);
return 0;
}
extern int lasat_boot_to_service;
#ifdef CONFIG_SYSCTL
static ctl_table lasat_table[] = {
{LASAT_CPU_HZ, "cpu-hz", &lasat_board_info.li_cpu_hz, sizeof(int),
0444, NULL, &proc_dointvec, &sysctl_intvec},
{LASAT_BUS_HZ, "bus-hz", &lasat_board_info.li_bus_hz, sizeof(int),
0444, NULL, &proc_dointvec, &sysctl_intvec},
{LASAT_MODEL, "bmid", &lasat_board_info.li_bmid, sizeof(int),
0444, NULL, &proc_dointvec, &sysctl_intvec},
{LASAT_PRID, "prid", &lasat_board_info.li_prid, sizeof(int),
0644, NULL, &proc_lasat_eeprom_value, &sysctl_lasat_eeprom_value},
#ifdef CONFIG_INET
{LASAT_IPADDR, "ipaddr", &lasat_board_info.li_eeprom_info.ipaddr, sizeof(int),
0644, NULL, &proc_lasat_ip, &sysctl_lasat_intvec},
{LASAT_NETMASK, "netmask", &lasat_board_info.li_eeprom_info.netmask, sizeof(int),
0644, NULL, &proc_lasat_ip, &sysctl_lasat_intvec},
{LASAT_BCAST, "bcastaddr", &lasat_bcastaddr,
sizeof(lasat_bcastaddr), 0600, NULL,
&proc_dostring, &sysctl_string},
#endif
{LASAT_PASSWORD, "passwd_hash", &lasat_board_info.li_eeprom_info.passwd_hash, sizeof(lasat_board_info.li_eeprom_info.passwd_hash),
0600, NULL, &proc_dolasatstring, &sysctl_lasatstring},
{LASAT_SBOOT, "boot-service", &lasat_boot_to_service, sizeof(int),
0644, NULL, &proc_dointvec, &sysctl_intvec},
#ifdef CONFIG_DS1603
{LASAT_RTC, "rtc", &rtctmp, sizeof(int),
0644, NULL, &proc_dolasatrtc, &sysctl_lasat_rtc},
#endif
{LASAT_NAMESTR, "namestr", &lasat_board_info.li_namestr, sizeof(lasat_board_info.li_namestr),
0444, NULL, &proc_dostring, &sysctl_string},
{LASAT_TYPESTR, "typestr", &lasat_board_info.li_typestr, sizeof(lasat_board_info.li_typestr),
0444, NULL, &proc_dostring, &sysctl_string},
{0}
};
#define CTL_LASAT 1 // CTL_ANY ???
static ctl_table lasat_root_table[] = {
{ CTL_LASAT, "lasat", NULL, 0, 0555, lasat_table },
{ 0 }
};
static int __init lasat_register_sysctl(void)
{
struct ctl_table_header *lasat_table_header;
lasat_table_header =
register_sysctl_table(lasat_root_table, 0);
return 0;
}
__initcall(lasat_register_sysctl);
#endif /* CONFIG_SYSCTL */
