drivers/isdn/capi/kcapi_proc.c

   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
  18 static char *
  19 cardstate2str(unsigned short cardstate)
  20 {
  21         switch (cardstate) {
  22         case CARD_DETECTED:     return "detected";
  23         case CARD_LOADING:      return "loading";
  24         case CARD_RUNNING:      return "running";
  25         default:                return "???";
  26         }
  27 }
  28
  29 // /proc/capi
  30 // ===========================================================================
  31
  32 // /proc/capi/controller:
  33 //      cnr driver cardstate name driverinfo
  34 // /proc/capi/contrstats:
  35 //      cnr nrecvctlpkt nrecvdatapkt nsentctlpkt nsentdatapkt
  36 // ---------------------------------------------------------------------------
  37
  38 static void *controller_start(struct seq_file *seq, loff_t *pos)
  39 {
  40         if (*pos < CAPI_MAXCONTR)
  41                 return &capi_cards[*pos];
  42
  43         return NULL;
  44 }
  45
  46 static void *controller_next(struct seq_file *seq, void *v, loff_t *pos)
  47 {
  48         ++*pos;
  49         if (*pos < CAPI_MAXCONTR)
  50                 return &capi_cards[*pos];
  51
  52         return NULL;
  53 }
  54
  55 static void controller_stop(struct seq_file *seq, void *v)
  56 {
  57 }
  58
  59 static int controller_show(struct seq_file *seq, void *v)
  60 {
  61         struct capi_ctr *ctr = *(struct capi_ctr **) v;
  62
  63         if (!ctr)
  64                 return 0;
  65
  66         seq_printf(seq, "%d %-10s %-8s %-16s %s\n",
  67                    ctr->cnr, ctr->driver_name,
  68                    cardstate2str(ctr->cardstate),
  69                    ctr->name,
  70                    ctr->procinfo ?  ctr->procinfo(ctr) : "");
  71
  72         return 0;
  73 }
  74
  75 static int contrstats_show(struct seq_file *seq, void *v)
  76 {
  77         struct capi_ctr *ctr = *(struct capi_ctr **) v;
  78
  79         if (!ctr)
  80                 return 0;
  81
  82         seq_printf(seq, "%d %lu %lu %lu %lu\n",
  83                    ctr->cnr,
  84                    ctr->nrecvctlpkt,
  85                    ctr->nrecvdatapkt,
  86                    ctr->nsentctlpkt,
  87                    ctr->nsentdatapkt);
  88
  89         return 0;
  90 }
  91
  92 static const struct seq_operations seq_controller_ops = {
  93         .start  = controller_start,
  94         .next   = controller_next,
  95         .stop   = controller_stop,
  96         .show   = controller_show,
  97 };
  98
  99 static const struct seq_operations seq_contrstats_ops = {
 100         .start  = controller_start,
 101         .next   = controller_next,
 102         .stop   = controller_stop,
 103         .show   = contrstats_show,
 104 };
 105
 106 static int seq_controller_open(struct inode *inode, struct file *file)
 107 {
 108         return seq_open(file, &seq_controller_ops);
 109 }
 110
 111 static int seq_contrstats_open(struct inode *inode, struct file *file)
 112 {
 113         return seq_open(file, &seq_contrstats_ops);
 114 }
 115
 116 static const struct file_operations proc_controller_ops = {
 117         .owner          = THIS_MODULE,
 118         .open           = seq_controller_open,
 119         .read           = seq_read,
 120         .llseek         = seq_lseek,
 121         .release        = seq_release,
 122 };
 123
 124 static const struct file_operations proc_contrstats_ops = {
 125         .owner          = THIS_MODULE,
 126         .open           = seq_contrstats_open,
 127         .read           = seq_read,
 128         .llseek         = seq_lseek,
 129         .release        = seq_release,
 130 };
 131
 132 // /proc/capi/applications:
 133 //      applid l3cnt dblkcnt dblklen #ncci recvqueuelen
 134 // /proc/capi/applstats:
 135 //      applid nrecvctlpkt nrecvdatapkt nsentctlpkt nsentdatapkt
 136 // ---------------------------------------------------------------------------
 137
 138 static void *
 139 applications_start(struct seq_file *seq, loff_t *pos)
 140 {
 141         if (*pos < CAPI_MAXAPPL)
 142                 return &capi_applications[*pos];
 143
 144         return NULL;
 145 }
 146
 147 static void *
 148 applications_next(struct seq_file *seq, void *v, loff_t *pos)
 149 {
 150         ++*pos;
 151         if (*pos < CAPI_MAXAPPL)
 152                 return &capi_applications[*pos];
 153
 154         return NULL;
 155 }
 156
 157 static void
 158 applications_stop(struct seq_file *seq, void *v)
 159 {
 160 }
 161
 162 static int
 163 applications_show(struct seq_file *seq, void *v)
 164 {
 165         struct capi20_appl *ap = *(struct capi20_appl **) v;
 166
 167         if (!ap)
 168                 return 0;
 169
 170         seq_printf(seq, "%u %d %d %d\n",
 171                    ap->applid,
 172                    ap->rparam.level3cnt,
 173                    ap->rparam.datablkcnt,
 174                    ap->rparam.datablklen);
 175
 176         return 0;
 177 }
 178
 179 static int
 180 applstats_show(struct seq_file *seq, void *v)
 181 {
 182         struct capi20_appl *ap = *(struct capi20_appl **) v;
 183
 184         if (!ap)
 185                 return 0;
 186
 187         seq_printf(seq, "%u %lu %lu %lu %lu\n",
 188                    ap->applid,
 189                    ap->nrecvctlpkt,
 190                    ap->nrecvdatapkt,
 191                    ap->nsentctlpkt,
 192                    ap->nsentdatapkt);
 193
 194         return 0;
 195 }
 196
 197 static const struct seq_operations seq_applications_ops = {
 198         .start  = applications_start,
 199         .next   = applications_next,
 200         .stop   = applications_stop,
 201         .show   = applications_show,
 202 };
 203
 204 static const struct seq_operations seq_applstats_ops = {
 205         .start  = applications_start,
 206         .next   = applications_next,
 207         .stop   = applications_stop,
 208         .show   = applstats_show,
 209 };
 210
 211 static int
 212 seq_applications_open(struct inode *inode, struct file *file)
 213 {
 214         return seq_open(file, &seq_applications_ops);
 215 }
 216
 217 static int
 218 seq_applstats_open(struct inode *inode, struct file *file)
 219 {
 220         return seq_open(file, &seq_applstats_ops);
 221 }
 222
 223 static const struct file_operations proc_applications_ops = {
 224         .owner          = THIS_MODULE,
 225         .open           = seq_applications_open,
 226         .read           = seq_read,
 227         .llseek         = seq_lseek,
 228         .release        = seq_release,
 229 };
 230
 231 static const struct file_operations proc_applstats_ops = {
 232         .owner          = THIS_MODULE,
 233         .open           = seq_applstats_open,
 234         .read           = seq_read,
 235         .llseek         = seq_lseek,
 236         .release        = seq_release,
 237 };
 238
 239 // ---------------------------------------------------------------------------
 240
 241 static void *capi_driver_start(struct seq_file *seq, loff_t *pos)
 242         __acquires(&capi_drivers_list_lock)
 243 {
 244         read_lock(&capi_drivers_list_lock);
 245         return seq_list_start(&capi_drivers, *pos);
 246 }
 247
 248 static void *capi_driver_next(struct seq_file *seq, void *v, loff_t *pos)
 249 {
 250         return seq_list_next(v, &capi_drivers, pos);
 251 }
 252
 253 static void capi_driver_stop(struct seq_file *seq, void *v)
 254         __releases(&capi_drivers_list_lock)
 255 {
 256         read_unlock(&capi_drivers_list_lock);
 257 }
 258
 259 static int capi_driver_show(struct seq_file *seq, void *v)
 260 {
 261         struct capi_driver *drv = list_entry(v, struct capi_driver, list);
 262
 263         seq_printf(seq, "%-32s %s\n", drv->name, drv->revision);
 264         return 0;
 265 }
 266
 267 static const struct seq_operations seq_capi_driver_ops = {
 268         .start  = capi_driver_start,
 269         .next   = capi_driver_next,
 270         .stop   = capi_driver_stop,
 271         .show   = capi_driver_show,
 272 };
 273
 274 static int
 275 seq_capi_driver_open(struct inode *inode, struct file *file)
 276 {
 277         int err;
 278         err = seq_open(file, &seq_capi_driver_ops);
 279         return err;
 280 }
 281
 282 static const struct file_operations proc_driver_ops = {
 283         .owner          = THIS_MODULE,
 284         .open           = seq_capi_driver_open,
 285         .read           = seq_read,
 286         .llseek         = seq_lseek,
 287         .release        = seq_release,
 288 };
 289
 290 // ---------------------------------------------------------------------------
 291
 292 void __init
 293 kcapi_proc_init(void)
 294 {
 295         proc_mkdir("capi",             NULL);
 296         proc_mkdir("capi/controllers", NULL);
 297         proc_create("capi/controller",   0, NULL, &proc_controller_ops);
 298         proc_create("capi/contrstats",   0, NULL, &proc_contrstats_ops);
 299         proc_create("capi/applications", 0, NULL, &proc_applications_ops);
 300         proc_create("capi/applstats",    0, NULL, &proc_applstats_ops);
 301         proc_create("capi/driver",       0, NULL, &proc_driver_ops);
 302 }
 303
 304 void __exit
 305 kcapi_proc_exit(void)
 306 {
 307         remove_proc_entry("capi/driver",       NULL);
 308         remove_proc_entry("capi/controller",   NULL);
 309         remove_proc_entry("capi/contrstats",   NULL);
 310         remove_proc_entry("capi/applications", NULL);
 311         remove_proc_entry("capi/applstats",    NULL);
 312         remove_proc_entry("capi/controllers",  NULL);
 313         remove_proc_entry("capi",              NULL);
 314 }