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 */
proc_dolasatstring(ctl_table * table,int write,void * buffer,size_t * lenp,loff_t * ppos)42 int proc_dolasatstring(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 */
proc_dolasatint(ctl_table * table,int write,void * buffer,size_t * lenp,loff_t * ppos)57 int proc_dolasatint(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
72 static int rtctmp;
73
74 /* proc function to read/write RealTime Clock */
proc_dolasatrtc(ctl_table * table,int write,void * buffer,size_t * lenp,loff_t * ppos)75 int proc_dolasatrtc(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
proc_lasat_ip(ctl_table * table,int write,void * buffer,size_t * lenp,loff_t * ppos)100 int proc_lasat_ip(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
proc_lasat_prid(ctl_table * table,int write,void * buffer,size_t * lenp,loff_t * ppos)160 int proc_lasat_prid(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
177 extern int lasat_boot_to_service;
178
179 static 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
265 static ctl_table lasat_root_table[] = {
266 {
267 .procname = "lasat",
268 .mode = 0555,
269 .child = lasat_table
270 },
271 {}
272 };
273
lasat_register_sysctl(void)274 static 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