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(struct ctl_table * table,int write,void * buffer,size_t * lenp,loff_t * ppos)42 int 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
57 static int rtctmp;
58
59 /* proc function to read/write RealTime Clock */
proc_dolasatrtc(struct ctl_table * table,int write,void * buffer,size_t * lenp,loff_t * ppos)60 int 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
proc_lasat_ip(struct ctl_table * table,int write,void * buffer,size_t * lenp,loff_t * ppos)85 int 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
proc_lasat_prid(struct ctl_table * table,int write,void * buffer,size_t * lenp,loff_t * ppos)145 int 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
162 extern int lasat_boot_to_service;
163
164 static 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
250 static struct ctl_table lasat_root_table[] = {
251 {
252 .procname = "lasat",
253 .mode = 0555,
254 .child = lasat_table
255 },
256 {}
257 };
258
lasat_register_sysctl(void)259 static 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 arch_initcall(lasat_register_sysctl);
274