arch/mips/lasat/sysctl.c

   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/sysctl.h>
  24 #include <linux/stddef.h>
  25 #include <linux/init.h>
  26 #include <linux/fs.h>
  27 #include <linux/ctype.h>
  28 #include <linux/string.h>
  29 #include <linux/net.h>
  30 #include <linux/inet.h>
  31 #include <linux/uaccess.h>
  32
  33 #include <asm/time.h>
  34
  35 #ifdef CONFIG_DS1603
  36 #include "ds1603.h"
  37 #endif
  38
  39
  40 /* And the same for proc */
  41 int proc_dolasatstring(struct ctl_table *table, int write,
  42                        void *buffer, size_t *lenp, loff_t *ppos)
  43 {
  44         int r;
  45
  46         r = proc_dostring(table, write, buffer, lenp, ppos);
  47         if ((!write) || r)
  48                 return r;
  49
  50         lasat_write_eeprom_info();
  51
  52         return 0;
  53 }
  54
  55 #ifdef CONFIG_DS1603
  56 static int rtctmp;
  57
  58 /* proc function to read/write RealTime Clock */
  59 int proc_dolasatrtc(struct ctl_table *table, int write,
  60                        void *buffer, size_t *lenp, loff_t *ppos)
  61 {
  62         struct timespec64 ts;
  63         int r;
  64
  65         if (!write) {
  66                 read_persistent_clock64(&ts);
  67                 rtctmp = ts.tv_sec;
  68                 /* check for time < 0 and set to 0 */
  69                 if (rtctmp < 0)
  70                         rtctmp = 0;
  71         }
  72         r = proc_dointvec(table, write, buffer, lenp, ppos);
  73         if (r)
  74                 return r;
  75
  76         if (write)
  77                 rtc_mips_set_mmss(rtctmp);
  78
  79         return 0;
  80 }
  81 #endif
  82
  83 #ifdef CONFIG_INET
  84 int proc_lasat_ip(struct ctl_table *table, int write,
  85                        void *buffer, size_t *lenp, loff_t *ppos)
  86 {
  87         unsigned int ip;
  88         char *p, c;
  89         int len;
  90         char ipbuf[32];
  91
  92         if (!table->data || !table->maxlen || !*lenp ||
  93             (*ppos && !write)) {
  94                 *lenp = 0;
  95                 return 0;
  96         }
  97
  98         if (write) {
  99                 len = 0;
 100                 p = buffer;
 101                 while (len < *lenp) {
 102                         if (get_user(c, p++))
 103                                 return -EFAULT;
 104                         if (c == 0 || c == '\n')
 105                                 break;
 106                         len++;
 107                 }
 108                 if (len >= sizeof(ipbuf)-1)
 109                         len = sizeof(ipbuf) - 1;
 110                 if (copy_from_user(ipbuf, buffer, len))
 111                         return -EFAULT;
 112                 ipbuf[len] = 0;
 113                 *ppos += *lenp;
 114                 /* Now see if we can convert it to a valid IP */
 115                 ip = in_aton(ipbuf);
 116                 *(unsigned int *)(table->data) = ip;
 117                 lasat_write_eeprom_info();
 118         } else {
 119                 ip = *(unsigned int *)(table->data);
 120                 sprintf(ipbuf, "%d.%d.%d.%d",
 121                         (ip)       & 0xff,
 122                         (ip >>  8) & 0xff,
 123                         (ip >> 16) & 0xff,
 124                         (ip >> 24) & 0xff);
 125                 len = strlen(ipbuf);
 126                 if (len > *lenp)
 127                         len = *lenp;
 128                 if (len)
 129                         if (copy_to_user(buffer, ipbuf, len))
 130                                 return -EFAULT;
 131                 if (len < *lenp) {
 132                         if (put_user('\n', ((char *) buffer) + len))
 133                                 return -EFAULT;
 134                         len++;
 135                 }
 136                 *lenp = len;
 137                 *ppos += len;
 138         }
 139
 140         return 0;
 141 }
 142 #endif
 143
 144 int proc_lasat_prid(struct ctl_table *table, int write,
 145                        void *buffer, size_t *lenp, loff_t *ppos)
 146 {
 147         int r;
 148
 149         r = proc_dointvec(table, write, buffer, lenp, ppos);
 150         if (r < 0)
 151                 return r;
 152         if (write) {
 153                 lasat_board_info.li_eeprom_info.prid =
 154                         lasat_board_info.li_prid;
 155                 lasat_write_eeprom_info();
 156                 lasat_init_board_info();
 157         }
 158         return 0;
 159 }
 160
 161 extern int lasat_boot_to_service;
 162
 163 static struct ctl_table lasat_table[] = {
 164         {
 165                 .procname       = "cpu-hz",
 166                 .data           = &lasat_board_info.li_cpu_hz,
 167                 .maxlen         = sizeof(int),
 168                 .mode           = 0444,
 169                 .proc_handler   = proc_dointvec,
 170         },
 171         {
 172                 .procname       = "bus-hz",
 173                 .data           = &lasat_board_info.li_bus_hz,
 174                 .maxlen         = sizeof(int),
 175                 .mode           = 0444,
 176                 .proc_handler   = proc_dointvec,
 177         },
 178         {
 179                 .procname       = "bmid",
 180                 .data           = &lasat_board_info.li_bmid,
 181                 .maxlen         = sizeof(int),
 182                 .mode           = 0444,
 183                 .proc_handler   = proc_dointvec,
 184         },
 185         {
 186                 .procname       = "prid",
 187                 .data           = &lasat_board_info.li_prid,
 188                 .maxlen         = sizeof(int),
 189                 .mode           = 0644,
 190                 .proc_handler   = proc_lasat_prid,
 191         },
 192 #ifdef CONFIG_INET
 193         {
 194                 .procname       = "ipaddr",
 195                 .data           = &lasat_board_info.li_eeprom_info.ipaddr,
 196                 .maxlen         = sizeof(int),
 197                 .mode           = 0644,
 198                 .proc_handler   = proc_lasat_ip,
 199         },
 200         {
 201                 .procname       = "netmask",
 202                 .data           = &lasat_board_info.li_eeprom_info.netmask,
 203                 .maxlen         = sizeof(int),
 204                 .mode           = 0644,
 205                 .proc_handler   = proc_lasat_ip,
 206         },
 207 #endif
 208         {
 209                 .procname       = "passwd_hash",
 210                 .data           = &lasat_board_info.li_eeprom_info.passwd_hash,
 211                 .maxlen         =
 212                         sizeof(lasat_board_info.li_eeprom_info.passwd_hash),
 213                 .mode           = 0600,
 214                 .proc_handler   = proc_dolasatstring,
 215         },
 216         {
 217                 .procname       = "boot-service",
 218                 .data           = &lasat_boot_to_service,
 219                 .maxlen         = sizeof(int),
 220                 .mode           = 0644,
 221                 .proc_handler   = proc_dointvec,
 222         },
 223 #ifdef CONFIG_DS1603
 224         {
 225                 .procname       = "rtc",
 226                 .data           = &rtctmp,
 227                 .maxlen         = sizeof(int),
 228                 .mode           = 0644,
 229                 .proc_handler   = proc_dolasatrtc,
 230         },
 231 #endif
 232         {
 233                 .procname       = "namestr",
 234                 .data           = &lasat_board_info.li_namestr,
 235                 .maxlen         = sizeof(lasat_board_info.li_namestr),
 236                 .mode           = 0444,
 237                 .proc_handler   = proc_dostring,
 238         },
 239         {
 240                 .procname       = "typestr",
 241                 .data           = &lasat_board_info.li_typestr,
 242                 .maxlen         = sizeof(lasat_board_info.li_typestr),
 243                 .mode           = 0444,
 244                 .proc_handler   = proc_dostring,
 245         },
 246         {}
 247 };
 248
 249 static struct ctl_table lasat_root_table[] = {
 250         {
 251                 .procname       = "lasat",
 252                 .mode           =  0555,
 253                 .child          = lasat_table
 254         },
 255         {}
 256 };
 257
 258 static int __init lasat_register_sysctl(void)
 259 {
 260         struct ctl_table_header *lasat_table_header;
 261
 262         lasat_table_header =
 263                 register_sysctl_table(lasat_root_table);
 264         if (!lasat_table_header) {
 265                 printk(KERN_ERR "Unable to register LASAT sysctl\n");
 266                 return -ENOMEM;
 267         }
 268
 269         return 0;
 270 }
 271
 272 arch_initcall(lasat_register_sysctl);