summaryrefslogtreecommitdiffstats
path: root/arch/mips/lasat/sysctl.c
blob: 6dd7ae1b7c25401a7c1cfda8817d6c28b4d10eb1 (plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
278
279
280
281
282
283
284
285
286
287
288
289
290
291
292
293
294
295
296
297
298
299
300
301
302
303
304
305
306
307
308
309
310
311
312
313
314
315
316
317
318
319
320
321
322
323
324
325
326
327
328
329
330
331
332
333
334
335
336
337
338
339
340
341
342
343
344
345
346
347
348
349
350
351
352
353
354
355
/*
 * 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 <asm/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, void **context)
{
	int r;
	mutex_lock(&lasat_info_mutex);
	r = sysctl_string(table, name,
			  nlen, oldval, oldlenp, newval, newlen, context);
	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, void **context)
{
	int r;
	mutex_lock(&lasat_info_mutex);
	r = sysctl_intvec(table, name, nlen, oldval, oldlenp, newval, newlen, context);
	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, void **context)
{
	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, context);
	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)
{
	int len;
        unsigned int ip;
	char *p, c;

	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,
				     void **context)
{
	int r;

	mutex_lock(&lasat_info_mutex);
	r = sysctl_intvec(table, name, nlen, oldval, oldlenp, newval, newlen, context);
	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_dentry)
	{
		if (!strcmp(filp->f_dentry->d_name.name, "prid"))
			lasat_board_info.li_eeprom_info.prid = lasat_board_info.li_prid;
		if (!strcmp(filp->f_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[] = {
	{LASAT_CPU_HZ, "cpu-hz", &lasat_board_info.li_cpu_hz, sizeof(int),
	 0444, NULL, &proc_dointvec, &sysctl_intvec},
	{LASAT_BUS_HZ, "bus-hz", &lasat_board_info.li_bus_hz, sizeof(int),
	 0444, NULL, &proc_dointvec, &sysctl_intvec},
	{LASAT_MODEL, "bmid", &lasat_board_info.li_bmid, sizeof(int),
	 0444, NULL, &proc_dointvec, &sysctl_intvec},
	{LASAT_PRID, "prid", &lasat_board_info.li_prid, sizeof(int),
	 0644, NULL, &proc_lasat_eeprom_value, &sysctl_lasat_eeprom_value},
#ifdef CONFIG_INET
	{LASAT_IPADDR, "ipaddr", &lasat_board_info.li_eeprom_info.ipaddr, sizeof(int),
	 0644, NULL, &proc_lasat_ip, &sysctl_lasat_intvec},
	{LASAT_NETMASK, "netmask", &lasat_board_info.li_eeprom_info.netmask, sizeof(int),
	 0644, NULL, &proc_lasat_ip, &sysctl_lasat_intvec},
	{LASAT_BCAST, "bcastaddr", &lasat_bcastaddr,
		sizeof(lasat_bcastaddr), 0600, NULL,
		&proc_dostring, &sysctl_string},
#endif
	{LASAT_PASSWORD, "passwd_hash", &lasat_board_info.li_eeprom_info.passwd_hash, sizeof(lasat_board_info.li_eeprom_info.passwd_hash),
	 0600, NULL, &proc_dolasatstring, &sysctl_lasatstring},
	{LASAT_SBOOT, "boot-service", &lasat_boot_to_service, sizeof(int),
	 0644, NULL, &proc_dointvec, &sysctl_intvec},
#ifdef CONFIG_DS1603
	{LASAT_RTC, "rtc", &rtctmp, sizeof(int),
	 0644, NULL, &proc_dolasatrtc, &sysctl_lasat_rtc},
#endif
	{LASAT_NAMESTR, "namestr", &lasat_board_info.li_namestr, sizeof(lasat_board_info.li_namestr),
	 0444, NULL, &proc_dostring, &sysctl_string},
	{LASAT_TYPESTR, "typestr", &lasat_board_info.li_typestr, sizeof(lasat_board_info.li_typestr),
	 0444, NULL, &proc_dostring, &sysctl_string},
	{0}
};

#define CTL_LASAT 1	// CTL_ANY ???
static ctl_table lasat_root_table[] = {
	{ CTL_LASAT, "lasat", NULL, 0, 0555, lasat_table },
	{ 0 }
};

static int __init lasat_register_sysctl(void)
{
	struct ctl_table_header *lasat_table_header;

	lasat_table_header =
		register_sysctl_table(lasat_root_table, 0);

	return 0;
}

__initcall(lasat_register_sysctl);
#endif /* CONFIG_SYSCTL */