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 */
 41int 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
 56static int rtctmp;
 57
 58/* proc function to read/write RealTime Clock */
 59int 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
 84int 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
144int 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
161extern int lasat_boot_to_service;
162
163static 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
249static struct ctl_table lasat_root_table[] = {
250	{
251		.procname	= "lasat",
252		.mode		=  0555,
253		.child		= lasat_table
254	},
255	{}
256};
257
258static 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
272arch_initcall(lasat_register_sysctl);