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#ifdef CONFIG_DS1603
57static int rtctmp;
58
59/* proc function to read/write RealTime Clock */
60int proc_dolasatrtc(struct ctl_table *table, int write,
61		       void *buffer, size_t *lenp, loff_t *ppos)
62{
63	struct timespec64 ts;
64	int r;
65
66	if (!write) {
67		read_persistent_clock64(&ts);
68		rtctmp = ts.tv_sec;
69		/* check for time < 0 and set to 0 */
70		if (rtctmp < 0)
71			rtctmp = 0;
72	}
73	r = proc_dointvec(table, write, buffer, lenp, ppos);
74	if (r)
75		return r;
76
77	if (write)
78		rtc_mips_set_mmss(rtctmp);
79
80	return 0;
81}
82#endif
83
84#ifdef CONFIG_INET
85int proc_lasat_ip(struct ctl_table *table, int write,
86		       void *buffer, size_t *lenp, loff_t *ppos)
87{
88	unsigned int ip;
89	char *p, c;
90	int len;
91	char ipbuf[32];
92
93	if (!table->data || !table->maxlen || !*lenp ||
94	    (*ppos && !write)) {
95		*lenp = 0;
96		return 0;
97	}
98
99	if (write) {
100		len = 0;
101		p = buffer;
102		while (len < *lenp) {
103			if (get_user(c, p++))
104				return -EFAULT;
105			if (c == 0 || c == '\n')
106				break;
107			len++;
108		}
109		if (len >= sizeof(ipbuf)-1)
110			len = sizeof(ipbuf) - 1;
111		if (copy_from_user(ipbuf, buffer, len))
112			return -EFAULT;
113		ipbuf[len] = 0;
114		*ppos += *lenp;
115		/* Now see if we can convert it to a valid IP */
116		ip = in_aton(ipbuf);
117		*(unsigned int *)(table->data) = ip;
118		lasat_write_eeprom_info();
119	} else {
120		ip = *(unsigned int *)(table->data);
121		sprintf(ipbuf, "%d.%d.%d.%d",
122			(ip)	   & 0xff,
123			(ip >>	8) & 0xff,
124			(ip >> 16) & 0xff,
125			(ip >> 24) & 0xff);
126		len = strlen(ipbuf);
127		if (len > *lenp)
128			len = *lenp;
129		if (len)
130			if (copy_to_user(buffer, ipbuf, len))
131				return -EFAULT;
132		if (len < *lenp) {
133			if (put_user('\n', ((char *) buffer) + len))
134				return -EFAULT;
135			len++;
136		}
137		*lenp = len;
138		*ppos += len;
139	}
140
141	return 0;
142}
143#endif
144
145int proc_lasat_prid(struct ctl_table *table, int write,
146		       void *buffer, size_t *lenp, loff_t *ppos)
147{
148	int r;
149
150	r = proc_dointvec(table, write, buffer, lenp, ppos);
151	if (r < 0)
152		return r;
153	if (write) {
154		lasat_board_info.li_eeprom_info.prid =
155			lasat_board_info.li_prid;
156		lasat_write_eeprom_info();
157		lasat_init_board_info();
158	}
159	return 0;
160}
161
162extern int lasat_boot_to_service;
163
164static struct ctl_table lasat_table[] = {
165	{
166		.procname	= "cpu-hz",
167		.data		= &lasat_board_info.li_cpu_hz,
168		.maxlen		= sizeof(int),
169		.mode		= 0444,
170		.proc_handler	= proc_dointvec,
171	},
172	{
173		.procname	= "bus-hz",
174		.data		= &lasat_board_info.li_bus_hz,
175		.maxlen		= sizeof(int),
176		.mode		= 0444,
177		.proc_handler	= proc_dointvec,
178	},
179	{
180		.procname	= "bmid",
181		.data		= &lasat_board_info.li_bmid,
182		.maxlen		= sizeof(int),
183		.mode		= 0444,
184		.proc_handler	= proc_dointvec,
185	},
186	{
187		.procname	= "prid",
188		.data		= &lasat_board_info.li_prid,
189		.maxlen		= sizeof(int),
190		.mode		= 0644,
191		.proc_handler	= proc_lasat_prid,
192	},
193#ifdef CONFIG_INET
194	{
195		.procname	= "ipaddr",
196		.data		= &lasat_board_info.li_eeprom_info.ipaddr,
197		.maxlen		= sizeof(int),
198		.mode		= 0644,
199		.proc_handler	= proc_lasat_ip,
200	},
201	{
202		.procname	= "netmask",
203		.data		= &lasat_board_info.li_eeprom_info.netmask,
204		.maxlen		= sizeof(int),
205		.mode		= 0644,
206		.proc_handler	= proc_lasat_ip,
207	},
208#endif
209	{
210		.procname	= "passwd_hash",
211		.data		= &lasat_board_info.li_eeprom_info.passwd_hash,
212		.maxlen		=
213			sizeof(lasat_board_info.li_eeprom_info.passwd_hash),
214		.mode		= 0600,
215		.proc_handler	= proc_dolasatstring,
216	},
217	{
218		.procname	= "boot-service",
219		.data		= &lasat_boot_to_service,
220		.maxlen		= sizeof(int),
221		.mode		= 0644,
222		.proc_handler	= proc_dointvec,
223	},
224#ifdef CONFIG_DS1603
225	{
226		.procname	= "rtc",
227		.data		= &rtctmp,
228		.maxlen		= sizeof(int),
229		.mode		= 0644,
230		.proc_handler	= proc_dolasatrtc,
231	},
232#endif
233	{
234		.procname	= "namestr",
235		.data		= &lasat_board_info.li_namestr,
236		.maxlen		= sizeof(lasat_board_info.li_namestr),
237		.mode		= 0444,
238		.proc_handler	= proc_dostring,
239	},
240	{
241		.procname	= "typestr",
242		.data		= &lasat_board_info.li_typestr,
243		.maxlen		= sizeof(lasat_board_info.li_typestr),
244		.mode		= 0444,
245		.proc_handler	= proc_dostring,
246	},
247	{}
248};
249
250static struct ctl_table lasat_root_table[] = {
251	{
252		.procname	= "lasat",
253		.mode		=  0555,
254		.child		= lasat_table
255	},
256	{}
257};
258
259static int __init lasat_register_sysctl(void)
260{
261	struct ctl_table_header *lasat_table_header;
262
263	lasat_table_header =
264		register_sysctl_table(lasat_root_table);
265	if (!lasat_table_header) {
266		printk(KERN_ERR "Unable to register LASAT sysctl\n");
267		return -ENOMEM;
268	}
269
270	return 0;
271}
272
273__initcall(lasat_register_sysctl);
274