diff options
Diffstat (limited to 'arch/mips/lasat/sysctl.c')
| -rw-r--r-- | arch/mips/lasat/sysctl.c | 454 |
1 files changed, 454 insertions, 0 deletions
diff --git a/arch/mips/lasat/sysctl.c b/arch/mips/lasat/sysctl.c new file mode 100644 index 000000000000..4575a829766d --- /dev/null +++ b/arch/mips/lasat/sysctl.c @@ -0,0 +1,454 @@ +/* + * 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 "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 = 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) +{ + 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 = ds1603_read(); + 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) + 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) +{ + 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 */ |