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 */
proc_dolasatstring(struct ctl_table * table,int write,void * buffer,size_t * lenp,loff_t * ppos)41 int 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
56 static int rtctmp;
57
58 /* proc function to read/write RealTime Clock */
proc_dolasatrtc(struct ctl_table * table,int write,void * buffer,size_t * lenp,loff_t * ppos)59 int 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 /*
78 * Due to the RTC hardware limitation, we can not actually
79 * use the full 64-bit range here.
80 */
81 ts.tv_sec = rtctmp;
82 ts.tv_nsec = 0;
83
84 update_persistent_clock64(ts);
85 }
86
87 return 0;
88 }
89 #endif
90
91 #ifdef CONFIG_INET
proc_lasat_ip(struct ctl_table * table,int write,void * buffer,size_t * lenp,loff_t * ppos)92 int proc_lasat_ip(struct ctl_table *table, int write,
93 void *buffer, size_t *lenp, loff_t *ppos)
94 {
95 unsigned int ip;
96 char *p, c;
97 int len;
98 char ipbuf[32];
99
100 if (!table->data || !table->maxlen || !*lenp ||
101 (*ppos && !write)) {
102 *lenp = 0;
103 return 0;
104 }
105
106 if (write) {
107 len = 0;
108 p = buffer;
109 while (len < *lenp) {
110 if (get_user(c, p++))
111 return -EFAULT;
112 if (c == 0 || c == '\n')
113 break;
114 len++;
115 }
116 if (len >= sizeof(ipbuf)-1)
117 len = sizeof(ipbuf) - 1;
118 if (copy_from_user(ipbuf, buffer, len))
119 return -EFAULT;
120 ipbuf[len] = 0;
121 *ppos += *lenp;
122 /* Now see if we can convert it to a valid IP */
123 ip = in_aton(ipbuf);
124 *(unsigned int *)(table->data) = ip;
125 lasat_write_eeprom_info();
126 } else {
127 ip = *(unsigned int *)(table->data);
128 sprintf(ipbuf, "%d.%d.%d.%d",
129 (ip) & 0xff,
130 (ip >> 8) & 0xff,
131 (ip >> 16) & 0xff,
132 (ip >> 24) & 0xff);
133 len = strlen(ipbuf);
134 if (len > *lenp)
135 len = *lenp;
136 if (len)
137 if (copy_to_user(buffer, ipbuf, len))
138 return -EFAULT;
139 if (len < *lenp) {
140 if (put_user('\n', ((char *) buffer) + len))
141 return -EFAULT;
142 len++;
143 }
144 *lenp = len;
145 *ppos += len;
146 }
147
148 return 0;
149 }
150 #endif
151
proc_lasat_prid(struct ctl_table * table,int write,void * buffer,size_t * lenp,loff_t * ppos)152 int proc_lasat_prid(struct ctl_table *table, int write,
153 void *buffer, size_t *lenp, loff_t *ppos)
154 {
155 int r;
156
157 r = proc_dointvec(table, write, buffer, lenp, ppos);
158 if (r < 0)
159 return r;
160 if (write) {
161 lasat_board_info.li_eeprom_info.prid =
162 lasat_board_info.li_prid;
163 lasat_write_eeprom_info();
164 lasat_init_board_info();
165 }
166 return 0;
167 }
168
169 extern int lasat_boot_to_service;
170
171 static struct ctl_table lasat_table[] = {
172 {
173 .procname = "cpu-hz",
174 .data = &lasat_board_info.li_cpu_hz,
175 .maxlen = sizeof(int),
176 .mode = 0444,
177 .proc_handler = proc_dointvec,
178 },
179 {
180 .procname = "bus-hz",
181 .data = &lasat_board_info.li_bus_hz,
182 .maxlen = sizeof(int),
183 .mode = 0444,
184 .proc_handler = proc_dointvec,
185 },
186 {
187 .procname = "bmid",
188 .data = &lasat_board_info.li_bmid,
189 .maxlen = sizeof(int),
190 .mode = 0444,
191 .proc_handler = proc_dointvec,
192 },
193 {
194 .procname = "prid",
195 .data = &lasat_board_info.li_prid,
196 .maxlen = sizeof(int),
197 .mode = 0644,
198 .proc_handler = proc_lasat_prid,
199 },
200 #ifdef CONFIG_INET
201 {
202 .procname = "ipaddr",
203 .data = &lasat_board_info.li_eeprom_info.ipaddr,
204 .maxlen = sizeof(int),
205 .mode = 0644,
206 .proc_handler = proc_lasat_ip,
207 },
208 {
209 .procname = "netmask",
210 .data = &lasat_board_info.li_eeprom_info.netmask,
211 .maxlen = sizeof(int),
212 .mode = 0644,
213 .proc_handler = proc_lasat_ip,
214 },
215 #endif
216 {
217 .procname = "passwd_hash",
218 .data = &lasat_board_info.li_eeprom_info.passwd_hash,
219 .maxlen =
220 sizeof(lasat_board_info.li_eeprom_info.passwd_hash),
221 .mode = 0600,
222 .proc_handler = proc_dolasatstring,
223 },
224 {
225 .procname = "boot-service",
226 .data = &lasat_boot_to_service,
227 .maxlen = sizeof(int),
228 .mode = 0644,
229 .proc_handler = proc_dointvec,
230 },
231 #ifdef CONFIG_DS1603
232 {
233 .procname = "rtc",
234 .data = &rtctmp,
235 .maxlen = sizeof(int),
236 .mode = 0644,
237 .proc_handler = proc_dolasatrtc,
238 },
239 #endif
240 {
241 .procname = "namestr",
242 .data = &lasat_board_info.li_namestr,
243 .maxlen = sizeof(lasat_board_info.li_namestr),
244 .mode = 0444,
245 .proc_handler = proc_dostring,
246 },
247 {
248 .procname = "typestr",
249 .data = &lasat_board_info.li_typestr,
250 .maxlen = sizeof(lasat_board_info.li_typestr),
251 .mode = 0444,
252 .proc_handler = proc_dostring,
253 },
254 {}
255 };
256
257 static struct ctl_table lasat_root_table[] = {
258 {
259 .procname = "lasat",
260 .mode = 0555,
261 .child = lasat_table
262 },
263 {}
264 };
265
lasat_register_sysctl(void)266 static int __init lasat_register_sysctl(void)
267 {
268 struct ctl_table_header *lasat_table_header;
269
270 lasat_table_header =
271 register_sysctl_table(lasat_root_table);
272 if (!lasat_table_header) {
273 printk(KERN_ERR "Unable to register LASAT sysctl\n");
274 return -ENOMEM;
275 }
276
277 return 0;
278 }
279
280 arch_initcall(lasat_register_sysctl);
281
