android_kernel_xiaomi_sm8350/arch/mips/lasat/sysctl.c
Ralf Baechle 4b550488f8 [MIPS] Deforest the function pointer jungle in the time code.
Hard to follow who is pointing what to where and why so it's simply getting
in the way of the time code renovation.

Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
2007-10-11 23:46:08 +01:00

457 lines
10 KiB
C

/*
* 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 <linux/uaccess.h>
#include <asm/time.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)
{
int r;
mutex_lock(&lasat_info_mutex);
r = sysctl_string(table, name,
nlen, oldval, oldlenp, newval, newlen);
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 = read_persistent_clock();
/* 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;
}
rtc_mips_set_mmss(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)
{
int r;
mutex_lock(&lasat_info_mutex);
r = sysctl_intvec(table, name, nlen, oldval, oldlenp, newval, newlen);
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)
{
int r;
mutex_lock(&lasat_info_mutex);
rtctmp = read_persistent_clock();
if (rtctmp < 0)
rtctmp = 0;
r = sysctl_intvec(table, name, nlen, oldval, oldlenp, newval, newlen);
if (r < 0) {
mutex_unlock(&lasat_info_mutex);
return r;
}
if (newval && newlen)
rtc_mips_set_mmss(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)
{
unsigned int ip;
char *p, c;
int len;
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)
{
int r;
mutex_lock(&lasat_info_mutex);
r = sysctl_intvec(table, name, nlen, oldval, oldlenp, newval, newlen);
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_path.dentry) {
if (!strcmp(filp->f_path.dentry->d_name.name, "prid"))
lasat_board_info.li_eeprom_info.prid =
lasat_board_info.li_prid;
if (!strcmp(filp->f_path.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[] = {
{
.ctl_name = CTL_UNNUMBERED,
.procname = "cpu-hz",
.data = &lasat_board_info.li_cpu_hz,
.maxlen = sizeof(int),
.mode = 0444,
.proc_handler = &proc_dointvec,
.strategy = &sysctl_intvec
},
{
.ctl_name = CTL_UNNUMBERED,
.procname = "bus-hz",
.data = &lasat_board_info.li_bus_hz,
.maxlen = sizeof(int),
.mode = 0444,
.proc_handler = &proc_dointvec,
.strategy = &sysctl_intvec
},
{
.ctl_name = CTL_UNNUMBERED,
.procname = "bmid",
.data = &lasat_board_info.li_bmid,
.maxlen = sizeof(int),
.mode = 0444,
.proc_handler = &proc_dointvec,
.strategy = &sysctl_intvec
},
{
.ctl_name = CTL_UNNUMBERED,
.procname = "prid",
.data = &lasat_board_info.li_prid,
.maxlen = sizeof(int),
.mode = 0644,
.proc_handler = &proc_lasat_eeprom_value,
.strategy = &sysctl_lasat_eeprom_value
},
#ifdef CONFIG_INET
{
.ctl_name = CTL_UNNUMBERED,
.procname = "ipaddr",
.data = &lasat_board_info.li_eeprom_info.ipaddr,
.maxlen = sizeof(int),
.mode = 0644,
.proc_handler = &proc_lasat_ip,
.strategy = &sysctl_lasat_intvec
},
{
.ctl_name = LASAT_NETMASK,
.procname = "netmask",
.data = &lasat_board_info.li_eeprom_info.netmask,
.maxlen = sizeof(int),
.mode = 0644,
.proc_handler = &proc_lasat_ip,
.strategy = &sysctl_lasat_intvec
},
{
.ctl_name = CTL_UNNUMBERED,
.procname = "bcastaddr",
.data = &lasat_bcastaddr,
.maxlen = sizeof(lasat_bcastaddr),
.mode = 0600,
.proc_handler = &proc_dostring,
.strategy = &sysctl_string
},
#endif
{
.ctl_name = CTL_UNNUMBERED,
.procname = "passwd_hash",
.data = &lasat_board_info.li_eeprom_info.passwd_hash,
.maxlen =
sizeof(lasat_board_info.li_eeprom_info.passwd_hash),
.mode = 0600,
.proc_handler = &proc_dolasatstring,
.strategy = &sysctl_lasatstring
},
{
.ctl_name = CTL_UNNUMBERED,
.procname = "boot-service",
.data = &lasat_boot_to_service,
.maxlen = sizeof(int),
.mode = 0644,
.proc_handler = &proc_dointvec,
.strategy = &sysctl_intvec
},
#ifdef CONFIG_DS1603
{
.ctl_name = CTL_UNNUMBERED,
.procname = "rtc",
.data = &rtctmp,
.maxlen = sizeof(int),
.mode = 0644,
.proc_handler = &proc_dolasatrtc,
.strategy = &sysctl_lasat_rtc
},
#endif
{
.ctl_name = CTL_UNNUMBERED,
.procname = "namestr",
.data = &lasat_board_info.li_namestr,
.maxlen = sizeof(lasat_board_info.li_namestr),
.mode = 0444,
.proc_handler = &proc_dostring,
.strategy = &sysctl_string
},
{
.ctl_name = CTL_UNNUMBERED,
.procname = "typestr",
.data = &lasat_board_info.li_typestr,
.maxlen = sizeof(lasat_board_info.li_typestr),
.mode = 0444,
.proc_handler = &proc_dostring,
.strategy = &sysctl_string
},
{}
};
static ctl_table lasat_root_table[] = {
{
.ctl_name = CTL_UNNUMBERED,
.procname = "lasat",
.mode = 0555,
.child = lasat_table
},
{}
};
static int __init lasat_register_sysctl(void)
{
struct ctl_table_header *lasat_table_header;
lasat_table_header =
register_sysctl_table(lasat_root_table);
return 0;
}
__initcall(lasat_register_sysctl);
#endif /* CONFIG_SYSCTL */