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1da177e4 LT |
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 | ||
1da177e4 LT |
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> | |
14cc3e2b | 32 | #include <linux/mutex.h> |
1da177e4 LT |
33 | #include <asm/uaccess.h> |
34 | ||
35 | #include "sysctl.h" | |
36 | #include "ds1603.h" | |
37 | ||
14cc3e2b | 38 | static DEFINE_MUTEX(lasat_info_mutex); |
1da177e4 | 39 | |
42a3b4f2 | 40 | /* Strategy function to write EEPROM after changing string entry */ |
1da177e4 LT |
41 | int sysctl_lasatstring(ctl_table *table, int *name, int nlen, |
42 | void *oldval, size_t *oldlenp, | |
43 | void *newval, size_t newlen, void **context) | |
44 | { | |
45 | int r; | |
14cc3e2b | 46 | mutex_lock(&lasat_info_mutex); |
42a3b4f2 | 47 | r = sysctl_string(table, name, |
1da177e4 LT |
48 | nlen, oldval, oldlenp, newval, newlen, context); |
49 | if (r < 0) { | |
14cc3e2b | 50 | mutex_unlock(&lasat_info_mutex); |
1da177e4 LT |
51 | return r; |
52 | } | |
53 | if (newval && newlen) { | |
54 | lasat_write_eeprom_info(); | |
55 | } | |
14cc3e2b | 56 | mutex_unlock(&lasat_info_mutex); |
1da177e4 LT |
57 | return 1; |
58 | } | |
59 | ||
60 | ||
61 | /* And the same for proc */ | |
62 | int proc_dolasatstring(ctl_table *table, int write, struct file *filp, | |
63 | void *buffer, size_t *lenp, loff_t *ppos) | |
64 | { | |
65 | int r; | |
14cc3e2b | 66 | mutex_lock(&lasat_info_mutex); |
1da177e4 LT |
67 | r = proc_dostring(table, write, filp, buffer, lenp, ppos); |
68 | if ( (!write) || r) { | |
14cc3e2b | 69 | mutex_unlock(&lasat_info_mutex); |
1da177e4 LT |
70 | return r; |
71 | } | |
72 | lasat_write_eeprom_info(); | |
14cc3e2b | 73 | mutex_unlock(&lasat_info_mutex); |
1da177e4 LT |
74 | return 0; |
75 | } | |
76 | ||
42a3b4f2 | 77 | /* proc function to write EEPROM after changing int entry */ |
1da177e4 LT |
78 | int proc_dolasatint(ctl_table *table, int write, struct file *filp, |
79 | void *buffer, size_t *lenp, loff_t *ppos) | |
80 | { | |
81 | int r; | |
14cc3e2b | 82 | mutex_lock(&lasat_info_mutex); |
1da177e4 LT |
83 | r = proc_dointvec(table, write, filp, buffer, lenp, ppos); |
84 | if ( (!write) || r) { | |
14cc3e2b | 85 | mutex_unlock(&lasat_info_mutex); |
1da177e4 LT |
86 | return r; |
87 | } | |
88 | lasat_write_eeprom_info(); | |
14cc3e2b | 89 | mutex_unlock(&lasat_info_mutex); |
1da177e4 LT |
90 | return 0; |
91 | } | |
92 | ||
93 | static int rtctmp; | |
94 | ||
95 | #ifdef CONFIG_DS1603 | |
42a3b4f2 | 96 | /* proc function to read/write RealTime Clock */ |
1da177e4 LT |
97 | int proc_dolasatrtc(ctl_table *table, int write, struct file *filp, |
98 | void *buffer, size_t *lenp, loff_t *ppos) | |
99 | { | |
100 | int r; | |
14cc3e2b | 101 | mutex_lock(&lasat_info_mutex); |
1da177e4 LT |
102 | if (!write) { |
103 | rtctmp = ds1603_read(); | |
104 | /* check for time < 0 and set to 0 */ | |
105 | if (rtctmp < 0) | |
106 | rtctmp = 0; | |
107 | } | |
108 | r = proc_dointvec(table, write, filp, buffer, lenp, ppos); | |
109 | if ( (!write) || r) { | |
14cc3e2b | 110 | mutex_unlock(&lasat_info_mutex); |
1da177e4 LT |
111 | return r; |
112 | } | |
113 | ds1603_set(rtctmp); | |
14cc3e2b | 114 | mutex_unlock(&lasat_info_mutex); |
1da177e4 LT |
115 | return 0; |
116 | } | |
117 | #endif | |
118 | ||
119 | /* Sysctl for setting the IP addresses */ | |
120 | int sysctl_lasat_intvec(ctl_table *table, int *name, int nlen, | |
121 | void *oldval, size_t *oldlenp, | |
122 | void *newval, size_t newlen, void **context) | |
123 | { | |
124 | int r; | |
14cc3e2b | 125 | mutex_lock(&lasat_info_mutex); |
1da177e4 LT |
126 | r = sysctl_intvec(table, name, nlen, oldval, oldlenp, newval, newlen, context); |
127 | if (r < 0) { | |
14cc3e2b | 128 | mutex_unlock(&lasat_info_mutex); |
1da177e4 LT |
129 | return r; |
130 | } | |
131 | if (newval && newlen) { | |
132 | lasat_write_eeprom_info(); | |
133 | } | |
14cc3e2b | 134 | mutex_unlock(&lasat_info_mutex); |
1da177e4 LT |
135 | return 1; |
136 | } | |
137 | ||
138 | #ifdef CONFIG_DS1603 | |
139 | /* Same for RTC */ | |
140 | int sysctl_lasat_rtc(ctl_table *table, int *name, int nlen, | |
141 | void *oldval, size_t *oldlenp, | |
142 | void *newval, size_t newlen, void **context) | |
143 | { | |
144 | int r; | |
14cc3e2b | 145 | mutex_lock(&lasat_info_mutex); |
1da177e4 LT |
146 | rtctmp = ds1603_read(); |
147 | if (rtctmp < 0) | |
148 | rtctmp = 0; | |
149 | r = sysctl_intvec(table, name, nlen, oldval, oldlenp, newval, newlen, context); | |
150 | if (r < 0) { | |
14cc3e2b | 151 | mutex_unlock(&lasat_info_mutex); |
1da177e4 LT |
152 | return r; |
153 | } | |
154 | if (newval && newlen) { | |
155 | ds1603_set(rtctmp); | |
156 | } | |
14cc3e2b | 157 | mutex_unlock(&lasat_info_mutex); |
1da177e4 LT |
158 | return 1; |
159 | } | |
160 | #endif | |
161 | ||
162 | #ifdef CONFIG_INET | |
163 | static char lasat_bcastaddr[16]; | |
164 | ||
165 | void update_bcastaddr(void) | |
166 | { | |
167 | unsigned int ip; | |
42a3b4f2 RB |
168 | |
169 | ip = (lasat_board_info.li_eeprom_info.ipaddr & | |
170 | lasat_board_info.li_eeprom_info.netmask) | | |
1da177e4 LT |
171 | ~lasat_board_info.li_eeprom_info.netmask; |
172 | ||
173 | sprintf(lasat_bcastaddr, "%d.%d.%d.%d", | |
174 | (ip ) & 0xff, | |
175 | (ip >> 8) & 0xff, | |
176 | (ip >> 16) & 0xff, | |
177 | (ip >> 24) & 0xff); | |
178 | } | |
179 | ||
180 | static char proc_lasat_ipbuf[32]; | |
181 | /* Parsing of IP address */ | |
182 | int proc_lasat_ip(ctl_table *table, int write, struct file *filp, | |
183 | void *buffer, size_t *lenp, loff_t *ppos) | |
184 | { | |
185 | int len; | |
186 | unsigned int ip; | |
187 | char *p, c; | |
188 | ||
189 | if (!table->data || !table->maxlen || !*lenp || | |
190 | (*ppos && !write)) { | |
191 | *lenp = 0; | |
192 | return 0; | |
193 | } | |
194 | ||
14cc3e2b | 195 | mutex_lock(&lasat_info_mutex); |
1da177e4 LT |
196 | if (write) { |
197 | len = 0; | |
198 | p = buffer; | |
199 | while (len < *lenp) { | |
200 | if(get_user(c, p++)) { | |
14cc3e2b | 201 | mutex_unlock(&lasat_info_mutex); |
1da177e4 LT |
202 | return -EFAULT; |
203 | } | |
204 | if (c == 0 || c == '\n') | |
205 | break; | |
206 | len++; | |
207 | } | |
42a3b4f2 | 208 | if (len >= sizeof(proc_lasat_ipbuf)-1) |
1da177e4 LT |
209 | len = sizeof(proc_lasat_ipbuf) - 1; |
210 | if (copy_from_user(proc_lasat_ipbuf, buffer, len)) | |
211 | { | |
14cc3e2b | 212 | mutex_unlock(&lasat_info_mutex); |
1da177e4 LT |
213 | return -EFAULT; |
214 | } | |
215 | proc_lasat_ipbuf[len] = 0; | |
216 | *ppos += *lenp; | |
217 | /* Now see if we can convert it to a valid IP */ | |
218 | ip = in_aton(proc_lasat_ipbuf); | |
219 | *(unsigned int *)(table->data) = ip; | |
220 | lasat_write_eeprom_info(); | |
221 | } else { | |
222 | ip = *(unsigned int *)(table->data); | |
223 | sprintf(proc_lasat_ipbuf, "%d.%d.%d.%d", | |
224 | (ip ) & 0xff, | |
225 | (ip >> 8) & 0xff, | |
226 | (ip >> 16) & 0xff, | |
227 | (ip >> 24) & 0xff); | |
228 | len = strlen(proc_lasat_ipbuf); | |
229 | if (len > *lenp) | |
230 | len = *lenp; | |
231 | if (len) | |
232 | if(copy_to_user(buffer, proc_lasat_ipbuf, len)) { | |
14cc3e2b | 233 | mutex_unlock(&lasat_info_mutex); |
1da177e4 LT |
234 | return -EFAULT; |
235 | } | |
236 | if (len < *lenp) { | |
237 | if(put_user('\n', ((char *) buffer) + len)) { | |
14cc3e2b | 238 | mutex_unlock(&lasat_info_mutex); |
1da177e4 LT |
239 | return -EFAULT; |
240 | } | |
241 | len++; | |
242 | } | |
243 | *lenp = len; | |
244 | *ppos += len; | |
245 | } | |
246 | update_bcastaddr(); | |
14cc3e2b | 247 | mutex_unlock(&lasat_info_mutex); |
1da177e4 LT |
248 | return 0; |
249 | } | |
250 | #endif /* defined(CONFIG_INET) */ | |
251 | ||
42a3b4f2 RB |
252 | static int sysctl_lasat_eeprom_value(ctl_table *table, int *name, int nlen, |
253 | void *oldval, size_t *oldlenp, | |
1da177e4 LT |
254 | void *newval, size_t newlen, |
255 | void **context) | |
256 | { | |
257 | int r; | |
258 | ||
14cc3e2b | 259 | mutex_lock(&lasat_info_mutex); |
1da177e4 LT |
260 | r = sysctl_intvec(table, name, nlen, oldval, oldlenp, newval, newlen, context); |
261 | if (r < 0) { | |
14cc3e2b | 262 | mutex_unlock(&lasat_info_mutex); |
1da177e4 LT |
263 | return r; |
264 | } | |
265 | ||
266 | if (newval && newlen) | |
267 | { | |
268 | if (name && *name == LASAT_PRID) | |
269 | lasat_board_info.li_eeprom_info.prid = *(int*)newval; | |
270 | ||
271 | lasat_write_eeprom_info(); | |
272 | lasat_init_board_info(); | |
273 | } | |
14cc3e2b | 274 | mutex_unlock(&lasat_info_mutex); |
1da177e4 LT |
275 | |
276 | return 0; | |
277 | } | |
278 | ||
279 | int proc_lasat_eeprom_value(ctl_table *table, int write, struct file *filp, | |
280 | void *buffer, size_t *lenp, loff_t *ppos) | |
281 | { | |
282 | int r; | |
14cc3e2b | 283 | mutex_lock(&lasat_info_mutex); |
1da177e4 LT |
284 | r = proc_dointvec(table, write, filp, buffer, lenp, ppos); |
285 | if ( (!write) || r) { | |
14cc3e2b | 286 | mutex_unlock(&lasat_info_mutex); |
1da177e4 LT |
287 | return r; |
288 | } | |
289 | if (filp && filp->f_dentry) | |
290 | { | |
291 | if (!strcmp(filp->f_dentry->d_name.name, "prid")) | |
292 | lasat_board_info.li_eeprom_info.prid = lasat_board_info.li_prid; | |
293 | if (!strcmp(filp->f_dentry->d_name.name, "debugaccess")) | |
294 | lasat_board_info.li_eeprom_info.debugaccess = lasat_board_info.li_debugaccess; | |
295 | } | |
42a3b4f2 | 296 | lasat_write_eeprom_info(); |
14cc3e2b | 297 | mutex_unlock(&lasat_info_mutex); |
1da177e4 LT |
298 | return 0; |
299 | } | |
300 | ||
301 | extern int lasat_boot_to_service; | |
302 | ||
303 | #ifdef CONFIG_SYSCTL | |
304 | ||
305 | static ctl_table lasat_table[] = { | |
306 | {LASAT_CPU_HZ, "cpu-hz", &lasat_board_info.li_cpu_hz, sizeof(int), | |
307 | 0444, NULL, &proc_dointvec, &sysctl_intvec}, | |
308 | {LASAT_BUS_HZ, "bus-hz", &lasat_board_info.li_bus_hz, sizeof(int), | |
309 | 0444, NULL, &proc_dointvec, &sysctl_intvec}, | |
310 | {LASAT_MODEL, "bmid", &lasat_board_info.li_bmid, sizeof(int), | |
311 | 0444, NULL, &proc_dointvec, &sysctl_intvec}, | |
312 | {LASAT_PRID, "prid", &lasat_board_info.li_prid, sizeof(int), | |
313 | 0644, NULL, &proc_lasat_eeprom_value, &sysctl_lasat_eeprom_value}, | |
314 | #ifdef CONFIG_INET | |
315 | {LASAT_IPADDR, "ipaddr", &lasat_board_info.li_eeprom_info.ipaddr, sizeof(int), | |
316 | 0644, NULL, &proc_lasat_ip, &sysctl_lasat_intvec}, | |
317 | {LASAT_NETMASK, "netmask", &lasat_board_info.li_eeprom_info.netmask, sizeof(int), | |
318 | 0644, NULL, &proc_lasat_ip, &sysctl_lasat_intvec}, | |
42a3b4f2 RB |
319 | {LASAT_BCAST, "bcastaddr", &lasat_bcastaddr, |
320 | sizeof(lasat_bcastaddr), 0600, NULL, | |
1da177e4 LT |
321 | &proc_dostring, &sysctl_string}, |
322 | #endif | |
323 | {LASAT_PASSWORD, "passwd_hash", &lasat_board_info.li_eeprom_info.passwd_hash, sizeof(lasat_board_info.li_eeprom_info.passwd_hash), | |
324 | 0600, NULL, &proc_dolasatstring, &sysctl_lasatstring}, | |
325 | {LASAT_SBOOT, "boot-service", &lasat_boot_to_service, sizeof(int), | |
326 | 0644, NULL, &proc_dointvec, &sysctl_intvec}, | |
327 | #ifdef CONFIG_DS1603 | |
328 | {LASAT_RTC, "rtc", &rtctmp, sizeof(int), | |
329 | 0644, NULL, &proc_dolasatrtc, &sysctl_lasat_rtc}, | |
330 | #endif | |
331 | {LASAT_NAMESTR, "namestr", &lasat_board_info.li_namestr, sizeof(lasat_board_info.li_namestr), | |
332 | 0444, NULL, &proc_dostring, &sysctl_string}, | |
333 | {LASAT_TYPESTR, "typestr", &lasat_board_info.li_typestr, sizeof(lasat_board_info.li_typestr), | |
334 | 0444, NULL, &proc_dostring, &sysctl_string}, | |
335 | {0} | |
336 | }; | |
337 | ||
338 | #define CTL_LASAT 1 // CTL_ANY ??? | |
339 | static ctl_table lasat_root_table[] = { | |
340 | { CTL_LASAT, "lasat", NULL, 0, 0555, lasat_table }, | |
341 | { 0 } | |
342 | }; | |
343 | ||
344 | static int __init lasat_register_sysctl(void) | |
345 | { | |
346 | struct ctl_table_header *lasat_table_header; | |
347 | ||
348 | lasat_table_header = | |
349 | register_sysctl_table(lasat_root_table, 0); | |
350 | ||
351 | return 0; | |
352 | } | |
353 | ||
354 | __initcall(lasat_register_sysctl); | |
355 | #endif /* CONFIG_SYSCTL */ |