linux/arch/mips/lasat/sysctl.c
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   1/*
   2 * Thomas Horsten <thh@lasat.com>
   3 * Copyright (C) 2000 LASAT Networks A/S.
   4 *
   5 *  This program is free software; you can distribute it and/or modify it
   6 *  under the terms of the GNU General Public License (Version 2) as
   7 *  published by the Free Software Foundation.
   8 *
   9 *  This program is distributed in the hope it will be useful, but WITHOUT
  10 *  ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
  11 *  FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
  12 *  for more details.
  13 *
  14 *  You should have received a copy of the GNU General Public License along
  15 *  with this program; if not, write to the Free Software Foundation, Inc.,
  16 *  59 Temple Place - Suite 330, Boston MA 02111-1307, USA.
  17 *
  18 * Routines specific to the LASAT boards
  19 */
  20#include <linux/types.h>
  21#include <asm/lasat/lasat.h>
  22
  23#include <linux/module.h>
  24#include <linux/sysctl.h>
  25#include <linux/stddef.h>
  26#include <linux/init.h>
  27#include <linux/fs.h>
  28#include <linux/ctype.h>
  29#include <linux/string.h>
  30#include <linux/net.h>
  31#include <linux/inet.h>
  32#include <linux/uaccess.h>
  33
  34#include <asm/time.h>
  35
  36#ifdef CONFIG_DS1603
  37#include "ds1603.h"
  38#endif
  39
  40
  41/* And the same for proc */
  42int proc_dolasatstring(struct ctl_table *table, int write,
  43                       void *buffer, size_t *lenp, loff_t *ppos)
  44{
  45        int r;
  46
  47        r = proc_dostring(table, write, buffer, lenp, ppos);
  48        if ((!write) || r)
  49                return r;
  50
  51        lasat_write_eeprom_info();
  52
  53        return 0;
  54}
  55
  56/* proc function to write EEPROM after changing int entry */
  57int proc_dolasatint(struct ctl_table *table, int write,
  58                       void *buffer, size_t *lenp, loff_t *ppos)
  59{
  60        int r;
  61
  62        r = proc_dointvec(table, write, buffer, lenp, ppos);
  63        if ((!write) || r)
  64                return r;
  65
  66        lasat_write_eeprom_info();
  67
  68        return 0;
  69}
  70
  71#ifdef CONFIG_DS1603
  72static int rtctmp;
  73
  74/* proc function to read/write RealTime Clock */
  75int proc_dolasatrtc(struct ctl_table *table, int write,
  76                       void *buffer, size_t *lenp, loff_t *ppos)
  77{
  78        struct timespec ts;
  79        int r;
  80
  81        if (!write) {
  82                read_persistent_clock(&ts);
  83                rtctmp = ts.tv_sec;
  84                /* check for time < 0 and set to 0 */
  85                if (rtctmp < 0)
  86                        rtctmp = 0;
  87        }
  88        r = proc_dointvec(table, write, buffer, lenp, ppos);
  89        if (r)
  90                return r;
  91
  92        if (write)
  93                rtc_mips_set_mmss(rtctmp);
  94
  95        return 0;
  96}
  97#endif
  98
  99#ifdef CONFIG_INET
 100int proc_lasat_ip(struct ctl_table *table, int write,
 101                       void *buffer, size_t *lenp, loff_t *ppos)
 102{
 103        unsigned int ip;
 104        char *p, c;
 105        int len;
 106        char ipbuf[32];
 107
 108        if (!table->data || !table->maxlen || !*lenp ||
 109            (*ppos && !write)) {
 110                *lenp = 0;
 111                return 0;
 112        }
 113
 114        if (write) {
 115                len = 0;
 116                p = buffer;
 117                while (len < *lenp) {
 118                        if (get_user(c, p++))
 119                                return -EFAULT;
 120                        if (c == 0 || c == '\n')
 121                                break;
 122                        len++;
 123                }
 124                if (len >= sizeof(ipbuf)-1)
 125                        len = sizeof(ipbuf) - 1;
 126                if (copy_from_user(ipbuf, buffer, len))
 127                        return -EFAULT;
 128                ipbuf[len] = 0;
 129                *ppos += *lenp;
 130                /* Now see if we can convert it to a valid IP */
 131                ip = in_aton(ipbuf);
 132                *(unsigned int *)(table->data) = ip;
 133                lasat_write_eeprom_info();
 134        } else {
 135                ip = *(unsigned int *)(table->data);
 136                sprintf(ipbuf, "%d.%d.%d.%d",
 137                        (ip)       & 0xff,
 138                        (ip >>  8) & 0xff,
 139                        (ip >> 16) & 0xff,
 140                        (ip >> 24) & 0xff);
 141                len = strlen(ipbuf);
 142                if (len > *lenp)
 143                        len = *lenp;
 144                if (len)
 145                        if (copy_to_user(buffer, ipbuf, len))
 146                                return -EFAULT;
 147                if (len < *lenp) {
 148                        if (put_user('\n', ((char *) buffer) + len))
 149                                return -EFAULT;
 150                        len++;
 151                }
 152                *lenp = len;
 153                *ppos += len;
 154        }
 155
 156        return 0;
 157}
 158#endif
 159
 160int proc_lasat_prid(struct ctl_table *table, int write,
 161                       void *buffer, size_t *lenp, loff_t *ppos)
 162{
 163        int r;
 164
 165        r = proc_dointvec(table, write, buffer, lenp, ppos);
 166        if (r < 0)
 167                return r;
 168        if (write) {
 169                lasat_board_info.li_eeprom_info.prid =
 170                        lasat_board_info.li_prid;
 171                lasat_write_eeprom_info();
 172                lasat_init_board_info();
 173        }
 174        return 0;
 175}
 176
 177extern int lasat_boot_to_service;
 178
 179static struct ctl_table lasat_table[] = {
 180        {
 181                .procname       = "cpu-hz",
 182                .data           = &lasat_board_info.li_cpu_hz,
 183                .maxlen         = sizeof(int),
 184                .mode           = 0444,
 185                .proc_handler   = proc_dointvec,
 186        },
 187        {
 188                .procname       = "bus-hz",
 189                .data           = &lasat_board_info.li_bus_hz,
 190                .maxlen         = sizeof(int),
 191                .mode           = 0444,
 192                .proc_handler   = proc_dointvec,
 193        },
 194        {
 195                .procname       = "bmid",
 196                .data           = &lasat_board_info.li_bmid,
 197                .maxlen         = sizeof(int),
 198                .mode           = 0444,
 199                .proc_handler   = proc_dointvec,
 200        },
 201        {
 202                .procname       = "prid",
 203                .data           = &lasat_board_info.li_prid,
 204                .maxlen         = sizeof(int),
 205                .mode           = 0644,
 206                .proc_handler   = proc_lasat_prid,
 207        },
 208#ifdef CONFIG_INET
 209        {
 210                .procname       = "ipaddr",
 211                .data           = &lasat_board_info.li_eeprom_info.ipaddr,
 212                .maxlen         = sizeof(int),
 213                .mode           = 0644,
 214                .proc_handler   = proc_lasat_ip,
 215        },
 216        {
 217                .procname       = "netmask",
 218                .data           = &lasat_board_info.li_eeprom_info.netmask,
 219                .maxlen         = sizeof(int),
 220                .mode           = 0644,
 221                .proc_handler   = proc_lasat_ip,
 222        },
 223#endif
 224        {
 225                .procname       = "passwd_hash",
 226                .data           = &lasat_board_info.li_eeprom_info.passwd_hash,
 227                .maxlen         =
 228                        sizeof(lasat_board_info.li_eeprom_info.passwd_hash),
 229                .mode           = 0600,
 230                .proc_handler   = proc_dolasatstring,
 231        },
 232        {
 233                .procname       = "boot-service",
 234                .data           = &lasat_boot_to_service,
 235                .maxlen         = sizeof(int),
 236                .mode           = 0644,
 237                .proc_handler   = proc_dointvec,
 238        },
 239#ifdef CONFIG_DS1603
 240        {
 241                .procname       = "rtc",
 242                .data           = &rtctmp,
 243                .maxlen         = sizeof(int),
 244                .mode           = 0644,
 245                .proc_handler   = proc_dolasatrtc,
 246        },
 247#endif
 248        {
 249                .procname       = "namestr",
 250                .data           = &lasat_board_info.li_namestr,
 251                .maxlen         = sizeof(lasat_board_info.li_namestr),
 252                .mode           = 0444,
 253                .proc_handler   = proc_dostring,
 254        },
 255        {
 256                .procname       = "typestr",
 257                .data           = &lasat_board_info.li_typestr,
 258                .maxlen         = sizeof(lasat_board_info.li_typestr),
 259                .mode           = 0444,
 260                .proc_handler   = proc_dostring,
 261        },
 262        {}
 263};
 264
 265static struct ctl_table lasat_root_table[] = {
 266        {
 267                .procname       = "lasat",
 268                .mode           =  0555,
 269                .child          = lasat_table
 270        },
 271        {}
 272};
 273
 274static int __init lasat_register_sysctl(void)
 275{
 276        struct ctl_table_header *lasat_table_header;
 277
 278        lasat_table_header =
 279                register_sysctl_table(lasat_root_table);
 280        if (!lasat_table_header) {
 281                printk(KERN_ERR "Unable to register LASAT sysctl\n");
 282                return -ENOMEM;
 283        }
 284
 285        return 0;
 286}
 287
 288__initcall(lasat_register_sysctl);
 289