1 /*
2 * Kernel CAPI 2.0 Module - /proc/capi handling
3 *
4 * Copyright 1999 by Carsten Paeth <calle@calle.de>
5 * Copyright 2002 by Kai Germaschewski <kai@germaschewski.name>
6 *
7 * This software may be used and distributed according to the terms
8 * of the GNU General Public License, incorporated herein by reference.
9 *
10 */
11
12
13 #include "kcapi.h"
14 #include <linux/proc_fs.h>
15 #include <linux/seq_file.h>
16 #include <linux/init.h>
17
state2str(unsigned short state)18 static char *state2str(unsigned short state)
19 {
20 switch (state) {
21 case CAPI_CTR_DETECTED: return "detected";
22 case CAPI_CTR_LOADING: return "loading";
23 case CAPI_CTR_RUNNING: return "running";
24 default: return "???";
25 }
26 }
27
28 // /proc/capi
29 // ===========================================================================
30
31 // /proc/capi/controller:
32 // cnr driver cardstate name driverinfo
33 // /proc/capi/contrstats:
34 // cnr nrecvctlpkt nrecvdatapkt nsentctlpkt nsentdatapkt
35 // ---------------------------------------------------------------------------
36
controller_start(struct seq_file * seq,loff_t * pos)37 static void *controller_start(struct seq_file *seq, loff_t *pos)
38 __acquires(capi_controller_lock)
39 {
40 mutex_lock(&capi_controller_lock);
41
42 if (*pos < CAPI_MAXCONTR)
43 return &capi_controller[*pos];
44
45 return NULL;
46 }
47
controller_next(struct seq_file * seq,void * v,loff_t * pos)48 static void *controller_next(struct seq_file *seq, void *v, loff_t *pos)
49 {
50 ++*pos;
51 if (*pos < CAPI_MAXCONTR)
52 return &capi_controller[*pos];
53
54 return NULL;
55 }
56
controller_stop(struct seq_file * seq,void * v)57 static void controller_stop(struct seq_file *seq, void *v)
58 __releases(capi_controller_lock)
59 {
60 mutex_unlock(&capi_controller_lock);
61 }
62
controller_show(struct seq_file * seq,void * v)63 static int controller_show(struct seq_file *seq, void *v)
64 {
65 struct capi_ctr *ctr = *(struct capi_ctr **) v;
66
67 if (!ctr)
68 return 0;
69
70 seq_printf(seq, "%d %-10s %-8s %-16s %s\n",
71 ctr->cnr, ctr->driver_name,
72 state2str(ctr->state),
73 ctr->name,
74 ctr->procinfo ? ctr->procinfo(ctr) : "");
75
76 return 0;
77 }
78
contrstats_show(struct seq_file * seq,void * v)79 static int contrstats_show(struct seq_file *seq, void *v)
80 {
81 struct capi_ctr *ctr = *(struct capi_ctr **) v;
82
83 if (!ctr)
84 return 0;
85
86 seq_printf(seq, "%d %lu %lu %lu %lu\n",
87 ctr->cnr,
88 ctr->nrecvctlpkt,
89 ctr->nrecvdatapkt,
90 ctr->nsentctlpkt,
91 ctr->nsentdatapkt);
92
93 return 0;
94 }
95
96 static const struct seq_operations seq_controller_ops = {
97 .start = controller_start,
98 .next = controller_next,
99 .stop = controller_stop,
100 .show = controller_show,
101 };
102
103 static const struct seq_operations seq_contrstats_ops = {
104 .start = controller_start,
105 .next = controller_next,
106 .stop = controller_stop,
107 .show = contrstats_show,
108 };
109
seq_controller_open(struct inode * inode,struct file * file)110 static int seq_controller_open(struct inode *inode, struct file *file)
111 {
112 return seq_open(file, &seq_controller_ops);
113 }
114
seq_contrstats_open(struct inode * inode,struct file * file)115 static int seq_contrstats_open(struct inode *inode, struct file *file)
116 {
117 return seq_open(file, &seq_contrstats_ops);
118 }
119
120 static const struct file_operations proc_controller_ops = {
121 .owner = THIS_MODULE,
122 .open = seq_controller_open,
123 .read = seq_read,
124 .llseek = seq_lseek,
125 .release = seq_release,
126 };
127
128 static const struct file_operations proc_contrstats_ops = {
129 .owner = THIS_MODULE,
130 .open = seq_contrstats_open,
131 .read = seq_read,
132 .llseek = seq_lseek,
133 .release = seq_release,
134 };
135
136 // /proc/capi/applications:
137 // applid l3cnt dblkcnt dblklen #ncci recvqueuelen
138 // /proc/capi/applstats:
139 // applid nrecvctlpkt nrecvdatapkt nsentctlpkt nsentdatapkt
140 // ---------------------------------------------------------------------------
141
applications_start(struct seq_file * seq,loff_t * pos)142 static void *applications_start(struct seq_file *seq, loff_t *pos)
143 __acquires(capi_controller_lock)
144 {
145 mutex_lock(&capi_controller_lock);
146
147 if (*pos < CAPI_MAXAPPL)
148 return &capi_applications[*pos];
149
150 return NULL;
151 }
152
153 static void *
applications_next(struct seq_file * seq,void * v,loff_t * pos)154 applications_next(struct seq_file *seq, void *v, loff_t *pos)
155 {
156 ++*pos;
157 if (*pos < CAPI_MAXAPPL)
158 return &capi_applications[*pos];
159
160 return NULL;
161 }
162
applications_stop(struct seq_file * seq,void * v)163 static void applications_stop(struct seq_file *seq, void *v)
164 __releases(capi_controller_lock)
165 {
166 mutex_unlock(&capi_controller_lock);
167 }
168
169 static int
applications_show(struct seq_file * seq,void * v)170 applications_show(struct seq_file *seq, void *v)
171 {
172 struct capi20_appl *ap = *(struct capi20_appl **) v;
173
174 if (!ap)
175 return 0;
176
177 seq_printf(seq, "%u %d %d %d\n",
178 ap->applid,
179 ap->rparam.level3cnt,
180 ap->rparam.datablkcnt,
181 ap->rparam.datablklen);
182
183 return 0;
184 }
185
186 static int
applstats_show(struct seq_file * seq,void * v)187 applstats_show(struct seq_file *seq, void *v)
188 {
189 struct capi20_appl *ap = *(struct capi20_appl **) v;
190
191 if (!ap)
192 return 0;
193
194 seq_printf(seq, "%u %lu %lu %lu %lu\n",
195 ap->applid,
196 ap->nrecvctlpkt,
197 ap->nrecvdatapkt,
198 ap->nsentctlpkt,
199 ap->nsentdatapkt);
200
201 return 0;
202 }
203
204 static const struct seq_operations seq_applications_ops = {
205 .start = applications_start,
206 .next = applications_next,
207 .stop = applications_stop,
208 .show = applications_show,
209 };
210
211 static const struct seq_operations seq_applstats_ops = {
212 .start = applications_start,
213 .next = applications_next,
214 .stop = applications_stop,
215 .show = applstats_show,
216 };
217
218 static int
seq_applications_open(struct inode * inode,struct file * file)219 seq_applications_open(struct inode *inode, struct file *file)
220 {
221 return seq_open(file, &seq_applications_ops);
222 }
223
224 static int
seq_applstats_open(struct inode * inode,struct file * file)225 seq_applstats_open(struct inode *inode, struct file *file)
226 {
227 return seq_open(file, &seq_applstats_ops);
228 }
229
230 static const struct file_operations proc_applications_ops = {
231 .owner = THIS_MODULE,
232 .open = seq_applications_open,
233 .read = seq_read,
234 .llseek = seq_lseek,
235 .release = seq_release,
236 };
237
238 static const struct file_operations proc_applstats_ops = {
239 .owner = THIS_MODULE,
240 .open = seq_applstats_open,
241 .read = seq_read,
242 .llseek = seq_lseek,
243 .release = seq_release,
244 };
245
246 // ---------------------------------------------------------------------------
247
capi_driver_start(struct seq_file * seq,loff_t * pos)248 static void *capi_driver_start(struct seq_file *seq, loff_t *pos)
249 __acquires(&capi_drivers_lock)
250 {
251 mutex_lock(&capi_drivers_lock);
252 return seq_list_start(&capi_drivers, *pos);
253 }
254
capi_driver_next(struct seq_file * seq,void * v,loff_t * pos)255 static void *capi_driver_next(struct seq_file *seq, void *v, loff_t *pos)
256 {
257 return seq_list_next(v, &capi_drivers, pos);
258 }
259
capi_driver_stop(struct seq_file * seq,void * v)260 static void capi_driver_stop(struct seq_file *seq, void *v)
261 __releases(&capi_drivers_lock)
262 {
263 mutex_unlock(&capi_drivers_lock);
264 }
265
capi_driver_show(struct seq_file * seq,void * v)266 static int capi_driver_show(struct seq_file *seq, void *v)
267 {
268 struct capi_driver *drv = list_entry(v, struct capi_driver, list);
269
270 seq_printf(seq, "%-32s %s\n", drv->name, drv->revision);
271 return 0;
272 }
273
274 static const struct seq_operations seq_capi_driver_ops = {
275 .start = capi_driver_start,
276 .next = capi_driver_next,
277 .stop = capi_driver_stop,
278 .show = capi_driver_show,
279 };
280
281 static int
seq_capi_driver_open(struct inode * inode,struct file * file)282 seq_capi_driver_open(struct inode *inode, struct file *file)
283 {
284 int err;
285 err = seq_open(file, &seq_capi_driver_ops);
286 return err;
287 }
288
289 static const struct file_operations proc_driver_ops = {
290 .owner = THIS_MODULE,
291 .open = seq_capi_driver_open,
292 .read = seq_read,
293 .llseek = seq_lseek,
294 .release = seq_release,
295 };
296
297 // ---------------------------------------------------------------------------
298
299 void __init
kcapi_proc_init(void)300 kcapi_proc_init(void)
301 {
302 proc_mkdir("capi", NULL);
303 proc_mkdir("capi/controllers", NULL);
304 proc_create("capi/controller", 0, NULL, &proc_controller_ops);
305 proc_create("capi/contrstats", 0, NULL, &proc_contrstats_ops);
306 proc_create("capi/applications", 0, NULL, &proc_applications_ops);
307 proc_create("capi/applstats", 0, NULL, &proc_applstats_ops);
308 proc_create("capi/driver", 0, NULL, &proc_driver_ops);
309 }
310
311 void __exit
kcapi_proc_exit(void)312 kcapi_proc_exit(void)
313 {
314 remove_proc_entry("capi/driver", NULL);
315 remove_proc_entry("capi/controller", NULL);
316 remove_proc_entry("capi/contrstats", NULL);
317 remove_proc_entry("capi/applications", NULL);
318 remove_proc_entry("capi/applstats", NULL);
319 remove_proc_entry("capi/controllers", NULL);
320 remove_proc_entry("capi", NULL);
321 }
322