Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1 | /* $Id: kcapi.c,v 1.1.2.8 2004/03/26 19:57:20 armin Exp $ |
| 2 | * |
| 3 | * Kernel CAPI 2.0 Module |
| 4 | * |
| 5 | * Copyright 1999 by Carsten Paeth <calle@calle.de> |
| 6 | * Copyright 2002 by Kai Germaschewski <kai@germaschewski.name> |
| 7 | * |
| 8 | * This software may be used and distributed according to the terms |
| 9 | * of the GNU General Public License, incorporated herein by reference. |
| 10 | * |
| 11 | */ |
| 12 | |
Robert P. J. Day | 37772ac | 2008-04-28 02:14:42 -0700 | [diff] [blame] | 13 | #define AVMB1_COMPAT |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 14 | |
| 15 | #include "kcapi.h" |
| 16 | #include <linux/module.h> |
| 17 | #include <linux/mm.h> |
| 18 | #include <linux/interrupt.h> |
| 19 | #include <linux/ioport.h> |
| 20 | #include <linux/proc_fs.h> |
Alexey Dobriyan | d43c36d | 2009-10-07 17:09:06 +0400 | [diff] [blame] | 21 | #include <linux/sched.h> |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 22 | #include <linux/seq_file.h> |
| 23 | #include <linux/skbuff.h> |
| 24 | #include <linux/workqueue.h> |
| 25 | #include <linux/capi.h> |
| 26 | #include <linux/kernelcapi.h> |
| 27 | #include <linux/init.h> |
| 28 | #include <linux/moduleparam.h> |
| 29 | #include <linux/delay.h> |
| 30 | #include <asm/uaccess.h> |
| 31 | #include <linux/isdn/capicmd.h> |
| 32 | #include <linux/isdn/capiutil.h> |
Robert P. J. Day | 37772ac | 2008-04-28 02:14:42 -0700 | [diff] [blame] | 33 | #ifdef AVMB1_COMPAT |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 34 | #include <linux/b1lli.h> |
| 35 | #endif |
Arjan van de Ven | 9cdf182 | 2006-03-23 03:00:21 -0800 | [diff] [blame] | 36 | #include <linux/mutex.h> |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 37 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 38 | static int showcapimsgs = 0; |
| 39 | |
| 40 | MODULE_DESCRIPTION("CAPI4Linux: kernel CAPI layer"); |
| 41 | MODULE_AUTHOR("Carsten Paeth"); |
| 42 | MODULE_LICENSE("GPL"); |
| 43 | module_param(showcapimsgs, uint, 0); |
| 44 | |
| 45 | /* ------------------------------------------------------------- */ |
| 46 | |
| 47 | struct capi_notifier { |
| 48 | struct work_struct work; |
| 49 | unsigned int cmd; |
| 50 | u32 controller; |
| 51 | u16 applid; |
| 52 | u32 ncci; |
| 53 | }; |
| 54 | |
| 55 | /* ------------------------------------------------------------- */ |
| 56 | |
| 57 | static struct capi_version driver_version = {2, 0, 1, 1<<4}; |
| 58 | static char driver_serial[CAPI_SERIAL_LEN] = "0004711"; |
| 59 | static char capi_manufakturer[64] = "AVM Berlin"; |
| 60 | |
| 61 | #define NCCI2CTRL(ncci) (((ncci) >> 24) & 0x7f) |
| 62 | |
| 63 | LIST_HEAD(capi_drivers); |
| 64 | DEFINE_RWLOCK(capi_drivers_list_lock); |
| 65 | |
| 66 | static DEFINE_RWLOCK(application_lock); |
Arjan van de Ven | 9cdf182 | 2006-03-23 03:00:21 -0800 | [diff] [blame] | 67 | static DEFINE_MUTEX(controller_mutex); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 68 | |
| 69 | struct capi20_appl *capi_applications[CAPI_MAXAPPL]; |
| 70 | struct capi_ctr *capi_cards[CAPI_MAXCONTR]; |
| 71 | |
| 72 | static int ncards; |
| 73 | |
| 74 | /* -------- controller ref counting -------------------------------------- */ |
| 75 | |
| 76 | static inline struct capi_ctr * |
| 77 | capi_ctr_get(struct capi_ctr *card) |
| 78 | { |
| 79 | if (!try_module_get(card->owner)) |
| 80 | return NULL; |
| 81 | return card; |
| 82 | } |
| 83 | |
| 84 | static inline void |
| 85 | capi_ctr_put(struct capi_ctr *card) |
| 86 | { |
| 87 | module_put(card->owner); |
| 88 | } |
| 89 | |
| 90 | /* ------------------------------------------------------------- */ |
| 91 | |
| 92 | static inline struct capi_ctr *get_capi_ctr_by_nr(u16 contr) |
| 93 | { |
| 94 | if (contr - 1 >= CAPI_MAXCONTR) |
| 95 | return NULL; |
| 96 | |
| 97 | return capi_cards[contr - 1]; |
| 98 | } |
| 99 | |
| 100 | static inline struct capi20_appl *get_capi_appl_by_nr(u16 applid) |
| 101 | { |
| 102 | if (applid - 1 >= CAPI_MAXAPPL) |
| 103 | return NULL; |
| 104 | |
| 105 | return capi_applications[applid - 1]; |
| 106 | } |
| 107 | |
| 108 | /* -------- util functions ------------------------------------ */ |
| 109 | |
| 110 | static inline int capi_cmd_valid(u8 cmd) |
| 111 | { |
| 112 | switch (cmd) { |
| 113 | case CAPI_ALERT: |
| 114 | case CAPI_CONNECT: |
| 115 | case CAPI_CONNECT_ACTIVE: |
| 116 | case CAPI_CONNECT_B3_ACTIVE: |
| 117 | case CAPI_CONNECT_B3: |
| 118 | case CAPI_CONNECT_B3_T90_ACTIVE: |
| 119 | case CAPI_DATA_B3: |
| 120 | case CAPI_DISCONNECT_B3: |
| 121 | case CAPI_DISCONNECT: |
| 122 | case CAPI_FACILITY: |
| 123 | case CAPI_INFO: |
| 124 | case CAPI_LISTEN: |
| 125 | case CAPI_MANUFACTURER: |
| 126 | case CAPI_RESET_B3: |
| 127 | case CAPI_SELECT_B_PROTOCOL: |
| 128 | return 1; |
| 129 | } |
| 130 | return 0; |
| 131 | } |
| 132 | |
| 133 | static inline int capi_subcmd_valid(u8 subcmd) |
| 134 | { |
| 135 | switch (subcmd) { |
| 136 | case CAPI_REQ: |
| 137 | case CAPI_CONF: |
| 138 | case CAPI_IND: |
| 139 | case CAPI_RESP: |
| 140 | return 1; |
| 141 | } |
| 142 | return 0; |
| 143 | } |
| 144 | |
| 145 | /* ------------------------------------------------------------ */ |
| 146 | |
| 147 | static void register_appl(struct capi_ctr *card, u16 applid, capi_register_params *rparam) |
| 148 | { |
| 149 | card = capi_ctr_get(card); |
| 150 | |
| 151 | if (card) |
| 152 | card->register_appl(card, applid, rparam); |
| 153 | else |
Harvey Harrison | 156f1ed | 2008-04-28 02:14:40 -0700 | [diff] [blame] | 154 | printk(KERN_WARNING "%s: cannot get card resources\n", __func__); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 155 | } |
| 156 | |
| 157 | |
| 158 | static void release_appl(struct capi_ctr *card, u16 applid) |
| 159 | { |
| 160 | DBG("applid %#x", applid); |
| 161 | |
| 162 | card->release_appl(card, applid); |
| 163 | capi_ctr_put(card); |
| 164 | } |
| 165 | |
| 166 | /* -------- KCI_CONTRUP --------------------------------------- */ |
| 167 | |
| 168 | static void notify_up(u32 contr) |
| 169 | { |
| 170 | struct capi_ctr *card = get_capi_ctr_by_nr(contr); |
| 171 | struct capi20_appl *ap; |
| 172 | u16 applid; |
| 173 | |
| 174 | if (showcapimsgs & 1) { |
| 175 | printk(KERN_DEBUG "kcapi: notify up contr %d\n", contr); |
| 176 | } |
| 177 | if (!card) { |
Harvey Harrison | 156f1ed | 2008-04-28 02:14:40 -0700 | [diff] [blame] | 178 | printk(KERN_WARNING "%s: invalid contr %d\n", __func__, contr); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 179 | return; |
| 180 | } |
| 181 | for (applid = 1; applid <= CAPI_MAXAPPL; applid++) { |
| 182 | ap = get_capi_appl_by_nr(applid); |
| 183 | if (!ap || ap->release_in_progress) continue; |
| 184 | register_appl(card, applid, &ap->rparam); |
| 185 | if (ap->callback && !ap->release_in_progress) |
| 186 | ap->callback(KCI_CONTRUP, contr, &card->profile); |
| 187 | } |
| 188 | } |
| 189 | |
| 190 | /* -------- KCI_CONTRDOWN ------------------------------------- */ |
| 191 | |
| 192 | static void notify_down(u32 contr) |
| 193 | { |
| 194 | struct capi20_appl *ap; |
| 195 | u16 applid; |
| 196 | |
| 197 | if (showcapimsgs & 1) { |
| 198 | printk(KERN_DEBUG "kcapi: notify down contr %d\n", contr); |
| 199 | } |
| 200 | |
| 201 | for (applid = 1; applid <= CAPI_MAXAPPL; applid++) { |
| 202 | ap = get_capi_appl_by_nr(applid); |
| 203 | if (ap && ap->callback && !ap->release_in_progress) |
| 204 | ap->callback(KCI_CONTRDOWN, contr, NULL); |
| 205 | } |
| 206 | } |
| 207 | |
David Howells | c402895 | 2006-11-22 14:57:56 +0000 | [diff] [blame] | 208 | static void notify_handler(struct work_struct *work) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 209 | { |
David Howells | c402895 | 2006-11-22 14:57:56 +0000 | [diff] [blame] | 210 | struct capi_notifier *np = |
| 211 | container_of(work, struct capi_notifier, work); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 212 | |
| 213 | switch (np->cmd) { |
| 214 | case KCI_CONTRUP: |
| 215 | notify_up(np->controller); |
| 216 | break; |
| 217 | case KCI_CONTRDOWN: |
| 218 | notify_down(np->controller); |
| 219 | break; |
| 220 | } |
| 221 | |
| 222 | kfree(np); |
| 223 | } |
| 224 | |
| 225 | /* |
| 226 | * The notifier will result in adding/deleteing of devices. Devices can |
| 227 | * only removed in user process, not in bh. |
| 228 | */ |
| 229 | static int notify_push(unsigned int cmd, u32 controller, u16 applid, u32 ncci) |
| 230 | { |
| 231 | struct capi_notifier *np = kmalloc(sizeof(*np), GFP_ATOMIC); |
| 232 | |
| 233 | if (!np) |
| 234 | return -ENOMEM; |
| 235 | |
David Howells | c402895 | 2006-11-22 14:57:56 +0000 | [diff] [blame] | 236 | INIT_WORK(&np->work, notify_handler); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 237 | np->cmd = cmd; |
| 238 | np->controller = controller; |
| 239 | np->applid = applid; |
| 240 | np->ncci = ncci; |
| 241 | |
| 242 | schedule_work(&np->work); |
| 243 | return 0; |
| 244 | } |
| 245 | |
| 246 | |
| 247 | /* -------- Receiver ------------------------------------------ */ |
| 248 | |
David Howells | c402895 | 2006-11-22 14:57:56 +0000 | [diff] [blame] | 249 | static void recv_handler(struct work_struct *work) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 250 | { |
| 251 | struct sk_buff *skb; |
David Howells | c402895 | 2006-11-22 14:57:56 +0000 | [diff] [blame] | 252 | struct capi20_appl *ap = |
| 253 | container_of(work, struct capi20_appl, recv_work); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 254 | |
| 255 | if ((!ap) || (ap->release_in_progress)) |
| 256 | return; |
| 257 | |
Matthias Kaehlcke | 67837f2 | 2007-07-17 04:04:16 -0700 | [diff] [blame] | 258 | mutex_lock(&ap->recv_mtx); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 259 | while ((skb = skb_dequeue(&ap->recv_queue))) { |
| 260 | if (CAPIMSG_CMD(skb->data) == CAPI_DATA_B3_IND) |
| 261 | ap->nrecvdatapkt++; |
| 262 | else |
| 263 | ap->nrecvctlpkt++; |
| 264 | |
| 265 | ap->recv_message(ap, skb); |
| 266 | } |
Matthias Kaehlcke | 67837f2 | 2007-07-17 04:04:16 -0700 | [diff] [blame] | 267 | mutex_unlock(&ap->recv_mtx); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 268 | } |
| 269 | |
Tilman Schmidt | 554f200 | 2009-04-23 02:24:21 +0000 | [diff] [blame] | 270 | /** |
| 271 | * capi_ctr_handle_message() - handle incoming CAPI message |
| 272 | * @card: controller descriptor structure. |
| 273 | * @appl: application ID. |
| 274 | * @skb: message. |
| 275 | * |
| 276 | * Called by hardware driver to pass a CAPI message to the application. |
| 277 | */ |
| 278 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 279 | void capi_ctr_handle_message(struct capi_ctr * card, u16 appl, struct sk_buff *skb) |
| 280 | { |
| 281 | struct capi20_appl *ap; |
| 282 | int showctl = 0; |
| 283 | u8 cmd, subcmd; |
| 284 | unsigned long flags; |
Karsten Keil | 17f0cd2 | 2007-02-28 20:13:50 -0800 | [diff] [blame] | 285 | _cdebbuf *cdb; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 286 | |
| 287 | if (card->cardstate != CARD_RUNNING) { |
Karsten Keil | 17f0cd2 | 2007-02-28 20:13:50 -0800 | [diff] [blame] | 288 | cdb = capi_message2str(skb->data); |
| 289 | if (cdb) { |
| 290 | printk(KERN_INFO "kcapi: controller [%03d] not active, got: %s", |
| 291 | card->cnr, cdb->buf); |
| 292 | cdebbuf_free(cdb); |
| 293 | } else |
| 294 | printk(KERN_INFO "kcapi: controller [%03d] not active, cannot trace\n", |
| 295 | card->cnr); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 296 | goto error; |
| 297 | } |
| 298 | |
| 299 | cmd = CAPIMSG_COMMAND(skb->data); |
| 300 | subcmd = CAPIMSG_SUBCOMMAND(skb->data); |
| 301 | if (cmd == CAPI_DATA_B3 && subcmd == CAPI_IND) { |
| 302 | card->nrecvdatapkt++; |
| 303 | if (card->traceflag > 2) showctl |= 2; |
| 304 | } else { |
| 305 | card->nrecvctlpkt++; |
| 306 | if (card->traceflag) showctl |= 2; |
| 307 | } |
| 308 | showctl |= (card->traceflag & 1); |
| 309 | if (showctl & 2) { |
| 310 | if (showctl & 1) { |
Karsten Keil | 17f0cd2 | 2007-02-28 20:13:50 -0800 | [diff] [blame] | 311 | printk(KERN_DEBUG "kcapi: got [%03d] id#%d %s len=%u\n", |
| 312 | card->cnr, CAPIMSG_APPID(skb->data), |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 313 | capi_cmd2str(cmd, subcmd), |
| 314 | CAPIMSG_LEN(skb->data)); |
| 315 | } else { |
Karsten Keil | 17f0cd2 | 2007-02-28 20:13:50 -0800 | [diff] [blame] | 316 | cdb = capi_message2str(skb->data); |
| 317 | if (cdb) { |
| 318 | printk(KERN_DEBUG "kcapi: got [%03d] %s\n", |
| 319 | card->cnr, cdb->buf); |
| 320 | cdebbuf_free(cdb); |
| 321 | } else |
| 322 | printk(KERN_DEBUG "kcapi: got [%03d] id#%d %s len=%u, cannot trace\n", |
| 323 | card->cnr, CAPIMSG_APPID(skb->data), |
| 324 | capi_cmd2str(cmd, subcmd), |
| 325 | CAPIMSG_LEN(skb->data)); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 326 | } |
| 327 | |
| 328 | } |
| 329 | |
| 330 | read_lock_irqsave(&application_lock, flags); |
| 331 | ap = get_capi_appl_by_nr(CAPIMSG_APPID(skb->data)); |
| 332 | if ((!ap) || (ap->release_in_progress)) { |
| 333 | read_unlock_irqrestore(&application_lock, flags); |
Karsten Keil | 17f0cd2 | 2007-02-28 20:13:50 -0800 | [diff] [blame] | 334 | cdb = capi_message2str(skb->data); |
| 335 | if (cdb) { |
| 336 | printk(KERN_ERR "kcapi: handle_message: applid %d state released (%s)\n", |
| 337 | CAPIMSG_APPID(skb->data), cdb->buf); |
| 338 | cdebbuf_free(cdb); |
| 339 | } else |
| 340 | printk(KERN_ERR "kcapi: handle_message: applid %d state released (%s) cannot trace\n", |
| 341 | CAPIMSG_APPID(skb->data), |
| 342 | capi_cmd2str(cmd, subcmd)); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 343 | goto error; |
| 344 | } |
| 345 | skb_queue_tail(&ap->recv_queue, skb); |
| 346 | schedule_work(&ap->recv_work); |
| 347 | read_unlock_irqrestore(&application_lock, flags); |
| 348 | |
| 349 | return; |
| 350 | |
| 351 | error: |
| 352 | kfree_skb(skb); |
| 353 | } |
| 354 | |
| 355 | EXPORT_SYMBOL(capi_ctr_handle_message); |
| 356 | |
Tilman Schmidt | 554f200 | 2009-04-23 02:24:21 +0000 | [diff] [blame] | 357 | /** |
| 358 | * capi_ctr_ready() - signal CAPI controller ready |
| 359 | * @card: controller descriptor structure. |
| 360 | * |
| 361 | * Called by hardware driver to signal that the controller is up and running. |
| 362 | */ |
| 363 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 364 | void capi_ctr_ready(struct capi_ctr * card) |
| 365 | { |
| 366 | card->cardstate = CARD_RUNNING; |
| 367 | |
Karsten Keil | 17f0cd2 | 2007-02-28 20:13:50 -0800 | [diff] [blame] | 368 | printk(KERN_NOTICE "kcapi: card [%03d] \"%s\" ready.\n", |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 369 | card->cnr, card->name); |
| 370 | |
| 371 | notify_push(KCI_CONTRUP, card->cnr, 0, 0); |
| 372 | } |
| 373 | |
| 374 | EXPORT_SYMBOL(capi_ctr_ready); |
| 375 | |
Tilman Schmidt | 554f200 | 2009-04-23 02:24:21 +0000 | [diff] [blame] | 376 | /** |
Tilman Schmidt | 4e32997 | 2009-06-07 09:09:23 +0000 | [diff] [blame] | 377 | * capi_ctr_down() - signal CAPI controller not ready |
Tilman Schmidt | 554f200 | 2009-04-23 02:24:21 +0000 | [diff] [blame] | 378 | * @card: controller descriptor structure. |
| 379 | * |
| 380 | * Called by hardware driver to signal that the controller is down and |
| 381 | * unavailable for use. |
| 382 | */ |
| 383 | |
Tilman Schmidt | 4e32997 | 2009-06-07 09:09:23 +0000 | [diff] [blame] | 384 | void capi_ctr_down(struct capi_ctr * card) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 385 | { |
| 386 | u16 appl; |
| 387 | |
| 388 | DBG(""); |
| 389 | |
| 390 | if (card->cardstate == CARD_DETECTED) |
| 391 | return; |
| 392 | |
| 393 | card->cardstate = CARD_DETECTED; |
| 394 | |
| 395 | memset(card->manu, 0, sizeof(card->manu)); |
| 396 | memset(&card->version, 0, sizeof(card->version)); |
| 397 | memset(&card->profile, 0, sizeof(card->profile)); |
| 398 | memset(card->serial, 0, sizeof(card->serial)); |
| 399 | |
| 400 | for (appl = 1; appl <= CAPI_MAXAPPL; appl++) { |
| 401 | struct capi20_appl *ap = get_capi_appl_by_nr(appl); |
| 402 | if (!ap || ap->release_in_progress) |
| 403 | continue; |
| 404 | |
| 405 | capi_ctr_put(card); |
| 406 | } |
| 407 | |
Karsten Keil | 17f0cd2 | 2007-02-28 20:13:50 -0800 | [diff] [blame] | 408 | printk(KERN_NOTICE "kcapi: card [%03d] down.\n", card->cnr); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 409 | |
| 410 | notify_push(KCI_CONTRDOWN, card->cnr, 0, 0); |
| 411 | } |
| 412 | |
Tilman Schmidt | 4e32997 | 2009-06-07 09:09:23 +0000 | [diff] [blame] | 413 | EXPORT_SYMBOL(capi_ctr_down); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 414 | |
Tilman Schmidt | 554f200 | 2009-04-23 02:24:21 +0000 | [diff] [blame] | 415 | /** |
| 416 | * capi_ctr_suspend_output() - suspend controller |
| 417 | * @card: controller descriptor structure. |
| 418 | * |
| 419 | * Called by hardware driver to stop data flow. |
| 420 | */ |
| 421 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 422 | void capi_ctr_suspend_output(struct capi_ctr *card) |
| 423 | { |
| 424 | if (!card->blocked) { |
Karsten Keil | 17f0cd2 | 2007-02-28 20:13:50 -0800 | [diff] [blame] | 425 | printk(KERN_DEBUG "kcapi: card [%03d] suspend\n", card->cnr); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 426 | card->blocked = 1; |
| 427 | } |
| 428 | } |
| 429 | |
| 430 | EXPORT_SYMBOL(capi_ctr_suspend_output); |
| 431 | |
Tilman Schmidt | 554f200 | 2009-04-23 02:24:21 +0000 | [diff] [blame] | 432 | /** |
| 433 | * capi_ctr_resume_output() - resume controller |
| 434 | * @card: controller descriptor structure. |
| 435 | * |
| 436 | * Called by hardware driver to resume data flow. |
| 437 | */ |
| 438 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 439 | void capi_ctr_resume_output(struct capi_ctr *card) |
| 440 | { |
| 441 | if (card->blocked) { |
Karsten Keil | 17f0cd2 | 2007-02-28 20:13:50 -0800 | [diff] [blame] | 442 | printk(KERN_DEBUG "kcapi: card [%03d] resume\n", card->cnr); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 443 | card->blocked = 0; |
| 444 | } |
| 445 | } |
| 446 | |
| 447 | EXPORT_SYMBOL(capi_ctr_resume_output); |
| 448 | |
| 449 | /* ------------------------------------------------------------- */ |
| 450 | |
Tilman Schmidt | 554f200 | 2009-04-23 02:24:21 +0000 | [diff] [blame] | 451 | /** |
| 452 | * attach_capi_ctr() - register CAPI controller |
| 453 | * @card: controller descriptor structure. |
| 454 | * |
| 455 | * Called by hardware driver to register a controller with the CAPI subsystem. |
| 456 | * Return value: 0 on success, error code < 0 on error |
| 457 | */ |
| 458 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 459 | int |
| 460 | attach_capi_ctr(struct capi_ctr *card) |
| 461 | { |
| 462 | int i; |
| 463 | |
Arjan van de Ven | 9cdf182 | 2006-03-23 03:00:21 -0800 | [diff] [blame] | 464 | mutex_lock(&controller_mutex); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 465 | |
| 466 | for (i = 0; i < CAPI_MAXCONTR; i++) { |
| 467 | if (capi_cards[i] == NULL) |
| 468 | break; |
| 469 | } |
| 470 | if (i == CAPI_MAXCONTR) { |
Arjan van de Ven | 9cdf182 | 2006-03-23 03:00:21 -0800 | [diff] [blame] | 471 | mutex_unlock(&controller_mutex); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 472 | printk(KERN_ERR "kcapi: out of controller slots\n"); |
| 473 | return -EBUSY; |
| 474 | } |
| 475 | capi_cards[i] = card; |
| 476 | |
Arjan van de Ven | 9cdf182 | 2006-03-23 03:00:21 -0800 | [diff] [blame] | 477 | mutex_unlock(&controller_mutex); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 478 | |
| 479 | card->nrecvctlpkt = 0; |
| 480 | card->nrecvdatapkt = 0; |
| 481 | card->nsentctlpkt = 0; |
| 482 | card->nsentdatapkt = 0; |
| 483 | card->cnr = i + 1; |
| 484 | card->cardstate = CARD_DETECTED; |
| 485 | card->blocked = 0; |
| 486 | card->traceflag = showcapimsgs; |
| 487 | |
| 488 | sprintf(card->procfn, "capi/controllers/%d", card->cnr); |
Alexey Dobriyan | 9a58a80 | 2010-01-14 03:10:54 -0800 | [diff] [blame] | 489 | card->procent = proc_create_data(card->procfn, 0, NULL, card->proc_fops, card); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 490 | |
| 491 | ncards++; |
Karsten Keil | 17f0cd2 | 2007-02-28 20:13:50 -0800 | [diff] [blame] | 492 | printk(KERN_NOTICE "kcapi: Controller [%03d]: %s attached\n", |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 493 | card->cnr, card->name); |
| 494 | return 0; |
| 495 | } |
| 496 | |
| 497 | EXPORT_SYMBOL(attach_capi_ctr); |
| 498 | |
Tilman Schmidt | 554f200 | 2009-04-23 02:24:21 +0000 | [diff] [blame] | 499 | /** |
| 500 | * detach_capi_ctr() - unregister CAPI controller |
| 501 | * @card: controller descriptor structure. |
| 502 | * |
| 503 | * Called by hardware driver to remove the registration of a controller |
| 504 | * with the CAPI subsystem. |
| 505 | * Return value: 0 on success, error code < 0 on error |
| 506 | */ |
| 507 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 508 | int detach_capi_ctr(struct capi_ctr *card) |
| 509 | { |
| 510 | if (card->cardstate != CARD_DETECTED) |
Tilman Schmidt | 4e32997 | 2009-06-07 09:09:23 +0000 | [diff] [blame] | 511 | capi_ctr_down(card); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 512 | |
| 513 | ncards--; |
| 514 | |
| 515 | if (card->procent) { |
| 516 | remove_proc_entry(card->procfn, NULL); |
| 517 | card->procent = NULL; |
| 518 | } |
| 519 | capi_cards[card->cnr - 1] = NULL; |
Karsten Keil | 17f0cd2 | 2007-02-28 20:13:50 -0800 | [diff] [blame] | 520 | printk(KERN_NOTICE "kcapi: Controller [%03d]: %s unregistered\n", |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 521 | card->cnr, card->name); |
| 522 | |
| 523 | return 0; |
| 524 | } |
| 525 | |
| 526 | EXPORT_SYMBOL(detach_capi_ctr); |
| 527 | |
Tilman Schmidt | 554f200 | 2009-04-23 02:24:21 +0000 | [diff] [blame] | 528 | /** |
| 529 | * register_capi_driver() - register CAPI driver |
| 530 | * @driver: driver descriptor structure. |
| 531 | * |
| 532 | * Called by hardware driver to register itself with the CAPI subsystem. |
| 533 | */ |
| 534 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 535 | void register_capi_driver(struct capi_driver *driver) |
| 536 | { |
| 537 | unsigned long flags; |
| 538 | |
| 539 | write_lock_irqsave(&capi_drivers_list_lock, flags); |
| 540 | list_add_tail(&driver->list, &capi_drivers); |
| 541 | write_unlock_irqrestore(&capi_drivers_list_lock, flags); |
| 542 | } |
| 543 | |
| 544 | EXPORT_SYMBOL(register_capi_driver); |
| 545 | |
Tilman Schmidt | 554f200 | 2009-04-23 02:24:21 +0000 | [diff] [blame] | 546 | /** |
| 547 | * unregister_capi_driver() - unregister CAPI driver |
| 548 | * @driver: driver descriptor structure. |
| 549 | * |
| 550 | * Called by hardware driver to unregister itself from the CAPI subsystem. |
| 551 | */ |
| 552 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 553 | void unregister_capi_driver(struct capi_driver *driver) |
| 554 | { |
| 555 | unsigned long flags; |
| 556 | |
| 557 | write_lock_irqsave(&capi_drivers_list_lock, flags); |
| 558 | list_del(&driver->list); |
| 559 | write_unlock_irqrestore(&capi_drivers_list_lock, flags); |
| 560 | } |
| 561 | |
| 562 | EXPORT_SYMBOL(unregister_capi_driver); |
| 563 | |
| 564 | /* ------------------------------------------------------------- */ |
| 565 | /* -------- CAPI2.0 Interface ---------------------------------- */ |
| 566 | /* ------------------------------------------------------------- */ |
| 567 | |
Tilman Schmidt | 554f200 | 2009-04-23 02:24:21 +0000 | [diff] [blame] | 568 | /** |
| 569 | * capi20_isinstalled() - CAPI 2.0 operation CAPI_INSTALLED |
| 570 | * |
| 571 | * Return value: CAPI result code (CAPI_NOERROR if at least one ISDN controller |
| 572 | * is ready for use, CAPI_REGNOTINSTALLED otherwise) |
| 573 | */ |
| 574 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 575 | u16 capi20_isinstalled(void) |
| 576 | { |
| 577 | int i; |
| 578 | for (i = 0; i < CAPI_MAXCONTR; i++) { |
| 579 | if (capi_cards[i] && capi_cards[i]->cardstate == CARD_RUNNING) |
| 580 | return CAPI_NOERROR; |
| 581 | } |
| 582 | return CAPI_REGNOTINSTALLED; |
| 583 | } |
| 584 | |
| 585 | EXPORT_SYMBOL(capi20_isinstalled); |
| 586 | |
Tilman Schmidt | 554f200 | 2009-04-23 02:24:21 +0000 | [diff] [blame] | 587 | /** |
| 588 | * capi20_register() - CAPI 2.0 operation CAPI_REGISTER |
| 589 | * @ap: CAPI application descriptor structure. |
| 590 | * |
| 591 | * Register an application's presence with CAPI. |
| 592 | * A unique application ID is assigned and stored in @ap->applid. |
| 593 | * After this function returns successfully, the message receive |
| 594 | * callback function @ap->recv_message() may be called at any time |
| 595 | * until capi20_release() has been called for the same @ap. |
| 596 | * Return value: CAPI result code |
| 597 | */ |
| 598 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 599 | u16 capi20_register(struct capi20_appl *ap) |
| 600 | { |
| 601 | int i; |
| 602 | u16 applid; |
| 603 | unsigned long flags; |
| 604 | |
| 605 | DBG(""); |
| 606 | |
| 607 | if (ap->rparam.datablklen < 128) |
| 608 | return CAPI_LOGBLKSIZETOSMALL; |
| 609 | |
| 610 | write_lock_irqsave(&application_lock, flags); |
| 611 | |
| 612 | for (applid = 1; applid <= CAPI_MAXAPPL; applid++) { |
| 613 | if (capi_applications[applid - 1] == NULL) |
| 614 | break; |
| 615 | } |
| 616 | if (applid > CAPI_MAXAPPL) { |
| 617 | write_unlock_irqrestore(&application_lock, flags); |
| 618 | return CAPI_TOOMANYAPPLS; |
| 619 | } |
| 620 | |
| 621 | ap->applid = applid; |
| 622 | capi_applications[applid - 1] = ap; |
| 623 | |
| 624 | ap->nrecvctlpkt = 0; |
| 625 | ap->nrecvdatapkt = 0; |
| 626 | ap->nsentctlpkt = 0; |
| 627 | ap->nsentdatapkt = 0; |
| 628 | ap->callback = NULL; |
Matthias Kaehlcke | 67837f2 | 2007-07-17 04:04:16 -0700 | [diff] [blame] | 629 | mutex_init(&ap->recv_mtx); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 630 | skb_queue_head_init(&ap->recv_queue); |
David Howells | c402895 | 2006-11-22 14:57:56 +0000 | [diff] [blame] | 631 | INIT_WORK(&ap->recv_work, recv_handler); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 632 | ap->release_in_progress = 0; |
| 633 | |
| 634 | write_unlock_irqrestore(&application_lock, flags); |
| 635 | |
Arjan van de Ven | 9cdf182 | 2006-03-23 03:00:21 -0800 | [diff] [blame] | 636 | mutex_lock(&controller_mutex); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 637 | for (i = 0; i < CAPI_MAXCONTR; i++) { |
| 638 | if (!capi_cards[i] || capi_cards[i]->cardstate != CARD_RUNNING) |
| 639 | continue; |
| 640 | register_appl(capi_cards[i], applid, &ap->rparam); |
| 641 | } |
Arjan van de Ven | 9cdf182 | 2006-03-23 03:00:21 -0800 | [diff] [blame] | 642 | mutex_unlock(&controller_mutex); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 643 | |
| 644 | if (showcapimsgs & 1) { |
| 645 | printk(KERN_DEBUG "kcapi: appl %d up\n", applid); |
| 646 | } |
| 647 | |
| 648 | return CAPI_NOERROR; |
| 649 | } |
| 650 | |
| 651 | EXPORT_SYMBOL(capi20_register); |
| 652 | |
Tilman Schmidt | 554f200 | 2009-04-23 02:24:21 +0000 | [diff] [blame] | 653 | /** |
| 654 | * capi20_release() - CAPI 2.0 operation CAPI_RELEASE |
| 655 | * @ap: CAPI application descriptor structure. |
| 656 | * |
| 657 | * Terminate an application's registration with CAPI. |
| 658 | * After this function returns successfully, the message receive |
| 659 | * callback function @ap->recv_message() will no longer be called. |
| 660 | * Return value: CAPI result code |
| 661 | */ |
| 662 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 663 | u16 capi20_release(struct capi20_appl *ap) |
| 664 | { |
| 665 | int i; |
| 666 | unsigned long flags; |
| 667 | |
| 668 | DBG("applid %#x", ap->applid); |
| 669 | |
| 670 | write_lock_irqsave(&application_lock, flags); |
| 671 | ap->release_in_progress = 1; |
| 672 | capi_applications[ap->applid - 1] = NULL; |
| 673 | write_unlock_irqrestore(&application_lock, flags); |
| 674 | |
Arjan van de Ven | 9cdf182 | 2006-03-23 03:00:21 -0800 | [diff] [blame] | 675 | mutex_lock(&controller_mutex); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 676 | for (i = 0; i < CAPI_MAXCONTR; i++) { |
| 677 | if (!capi_cards[i] || capi_cards[i]->cardstate != CARD_RUNNING) |
| 678 | continue; |
| 679 | release_appl(capi_cards[i], ap->applid); |
| 680 | } |
Arjan van de Ven | 9cdf182 | 2006-03-23 03:00:21 -0800 | [diff] [blame] | 681 | mutex_unlock(&controller_mutex); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 682 | |
| 683 | flush_scheduled_work(); |
| 684 | skb_queue_purge(&ap->recv_queue); |
| 685 | |
| 686 | if (showcapimsgs & 1) { |
| 687 | printk(KERN_DEBUG "kcapi: appl %d down\n", ap->applid); |
| 688 | } |
| 689 | |
| 690 | return CAPI_NOERROR; |
| 691 | } |
| 692 | |
| 693 | EXPORT_SYMBOL(capi20_release); |
| 694 | |
Tilman Schmidt | 554f200 | 2009-04-23 02:24:21 +0000 | [diff] [blame] | 695 | /** |
| 696 | * capi20_put_message() - CAPI 2.0 operation CAPI_PUT_MESSAGE |
| 697 | * @ap: CAPI application descriptor structure. |
| 698 | * @skb: CAPI message. |
| 699 | * |
| 700 | * Transfer a single message to CAPI. |
| 701 | * Return value: CAPI result code |
| 702 | */ |
| 703 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 704 | u16 capi20_put_message(struct capi20_appl *ap, struct sk_buff *skb) |
| 705 | { |
| 706 | struct capi_ctr *card; |
| 707 | int showctl = 0; |
| 708 | u8 cmd, subcmd; |
| 709 | |
| 710 | DBG("applid %#x", ap->applid); |
| 711 | |
| 712 | if (ncards == 0) |
| 713 | return CAPI_REGNOTINSTALLED; |
| 714 | if ((ap->applid == 0) || ap->release_in_progress) |
| 715 | return CAPI_ILLAPPNR; |
| 716 | if (skb->len < 12 |
| 717 | || !capi_cmd_valid(CAPIMSG_COMMAND(skb->data)) |
| 718 | || !capi_subcmd_valid(CAPIMSG_SUBCOMMAND(skb->data))) |
| 719 | return CAPI_ILLCMDORSUBCMDORMSGTOSMALL; |
| 720 | card = get_capi_ctr_by_nr(CAPIMSG_CONTROLLER(skb->data)); |
| 721 | if (!card || card->cardstate != CARD_RUNNING) { |
| 722 | card = get_capi_ctr_by_nr(1); // XXX why? |
| 723 | if (!card || card->cardstate != CARD_RUNNING) |
| 724 | return CAPI_REGNOTINSTALLED; |
| 725 | } |
| 726 | if (card->blocked) |
| 727 | return CAPI_SENDQUEUEFULL; |
| 728 | |
| 729 | cmd = CAPIMSG_COMMAND(skb->data); |
| 730 | subcmd = CAPIMSG_SUBCOMMAND(skb->data); |
| 731 | |
| 732 | if (cmd == CAPI_DATA_B3 && subcmd== CAPI_REQ) { |
| 733 | card->nsentdatapkt++; |
| 734 | ap->nsentdatapkt++; |
| 735 | if (card->traceflag > 2) showctl |= 2; |
| 736 | } else { |
| 737 | card->nsentctlpkt++; |
| 738 | ap->nsentctlpkt++; |
| 739 | if (card->traceflag) showctl |= 2; |
| 740 | } |
| 741 | showctl |= (card->traceflag & 1); |
| 742 | if (showctl & 2) { |
| 743 | if (showctl & 1) { |
Karsten Keil | 17f0cd2 | 2007-02-28 20:13:50 -0800 | [diff] [blame] | 744 | printk(KERN_DEBUG "kcapi: put [%03d] id#%d %s len=%u\n", |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 745 | CAPIMSG_CONTROLLER(skb->data), |
| 746 | CAPIMSG_APPID(skb->data), |
| 747 | capi_cmd2str(cmd, subcmd), |
| 748 | CAPIMSG_LEN(skb->data)); |
| 749 | } else { |
Karsten Keil | 17f0cd2 | 2007-02-28 20:13:50 -0800 | [diff] [blame] | 750 | _cdebbuf *cdb = capi_message2str(skb->data); |
| 751 | if (cdb) { |
| 752 | printk(KERN_DEBUG "kcapi: put [%03d] %s\n", |
| 753 | CAPIMSG_CONTROLLER(skb->data), |
| 754 | cdb->buf); |
| 755 | cdebbuf_free(cdb); |
| 756 | } else |
| 757 | printk(KERN_DEBUG "kcapi: put [%03d] id#%d %s len=%u cannot trace\n", |
| 758 | CAPIMSG_CONTROLLER(skb->data), |
| 759 | CAPIMSG_APPID(skb->data), |
| 760 | capi_cmd2str(cmd, subcmd), |
| 761 | CAPIMSG_LEN(skb->data)); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 762 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 763 | } |
| 764 | return card->send_message(card, skb); |
| 765 | } |
| 766 | |
| 767 | EXPORT_SYMBOL(capi20_put_message); |
| 768 | |
Tilman Schmidt | 554f200 | 2009-04-23 02:24:21 +0000 | [diff] [blame] | 769 | /** |
| 770 | * capi20_get_manufacturer() - CAPI 2.0 operation CAPI_GET_MANUFACTURER |
| 771 | * @contr: controller number. |
| 772 | * @buf: result buffer (64 bytes). |
| 773 | * |
| 774 | * Retrieve information about the manufacturer of the specified ISDN controller |
| 775 | * or (for @contr == 0) the driver itself. |
| 776 | * Return value: CAPI result code |
| 777 | */ |
| 778 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 779 | u16 capi20_get_manufacturer(u32 contr, u8 *buf) |
| 780 | { |
| 781 | struct capi_ctr *card; |
| 782 | |
| 783 | if (contr == 0) { |
| 784 | strlcpy(buf, capi_manufakturer, CAPI_MANUFACTURER_LEN); |
| 785 | return CAPI_NOERROR; |
| 786 | } |
| 787 | card = get_capi_ctr_by_nr(contr); |
| 788 | if (!card || card->cardstate != CARD_RUNNING) |
| 789 | return CAPI_REGNOTINSTALLED; |
| 790 | strlcpy(buf, card->manu, CAPI_MANUFACTURER_LEN); |
| 791 | return CAPI_NOERROR; |
| 792 | } |
| 793 | |
| 794 | EXPORT_SYMBOL(capi20_get_manufacturer); |
| 795 | |
Tilman Schmidt | 554f200 | 2009-04-23 02:24:21 +0000 | [diff] [blame] | 796 | /** |
| 797 | * capi20_get_version() - CAPI 2.0 operation CAPI_GET_VERSION |
| 798 | * @contr: controller number. |
| 799 | * @verp: result structure. |
| 800 | * |
| 801 | * Retrieve version information for the specified ISDN controller |
| 802 | * or (for @contr == 0) the driver itself. |
| 803 | * Return value: CAPI result code |
| 804 | */ |
| 805 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 806 | u16 capi20_get_version(u32 contr, struct capi_version *verp) |
| 807 | { |
| 808 | struct capi_ctr *card; |
| 809 | |
| 810 | if (contr == 0) { |
| 811 | *verp = driver_version; |
| 812 | return CAPI_NOERROR; |
| 813 | } |
| 814 | card = get_capi_ctr_by_nr(contr); |
| 815 | if (!card || card->cardstate != CARD_RUNNING) |
| 816 | return CAPI_REGNOTINSTALLED; |
| 817 | |
| 818 | memcpy((void *) verp, &card->version, sizeof(capi_version)); |
| 819 | return CAPI_NOERROR; |
| 820 | } |
| 821 | |
| 822 | EXPORT_SYMBOL(capi20_get_version); |
| 823 | |
Tilman Schmidt | 554f200 | 2009-04-23 02:24:21 +0000 | [diff] [blame] | 824 | /** |
| 825 | * capi20_get_serial() - CAPI 2.0 operation CAPI_GET_SERIAL_NUMBER |
| 826 | * @contr: controller number. |
| 827 | * @serial: result buffer (8 bytes). |
| 828 | * |
| 829 | * Retrieve the serial number of the specified ISDN controller |
| 830 | * or (for @contr == 0) the driver itself. |
| 831 | * Return value: CAPI result code |
| 832 | */ |
| 833 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 834 | u16 capi20_get_serial(u32 contr, u8 *serial) |
| 835 | { |
| 836 | struct capi_ctr *card; |
| 837 | |
| 838 | if (contr == 0) { |
| 839 | strlcpy(serial, driver_serial, CAPI_SERIAL_LEN); |
| 840 | return CAPI_NOERROR; |
| 841 | } |
| 842 | card = get_capi_ctr_by_nr(contr); |
| 843 | if (!card || card->cardstate != CARD_RUNNING) |
| 844 | return CAPI_REGNOTINSTALLED; |
| 845 | |
| 846 | strlcpy((void *) serial, card->serial, CAPI_SERIAL_LEN); |
| 847 | return CAPI_NOERROR; |
| 848 | } |
| 849 | |
| 850 | EXPORT_SYMBOL(capi20_get_serial); |
| 851 | |
Tilman Schmidt | 554f200 | 2009-04-23 02:24:21 +0000 | [diff] [blame] | 852 | /** |
| 853 | * capi20_get_profile() - CAPI 2.0 operation CAPI_GET_PROFILE |
| 854 | * @contr: controller number. |
| 855 | * @profp: result structure. |
| 856 | * |
| 857 | * Retrieve capability information for the specified ISDN controller |
| 858 | * or (for @contr == 0) the number of installed controllers. |
| 859 | * Return value: CAPI result code |
| 860 | */ |
| 861 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 862 | u16 capi20_get_profile(u32 contr, struct capi_profile *profp) |
| 863 | { |
| 864 | struct capi_ctr *card; |
| 865 | |
| 866 | if (contr == 0) { |
| 867 | profp->ncontroller = ncards; |
| 868 | return CAPI_NOERROR; |
| 869 | } |
| 870 | card = get_capi_ctr_by_nr(contr); |
| 871 | if (!card || card->cardstate != CARD_RUNNING) |
| 872 | return CAPI_REGNOTINSTALLED; |
| 873 | |
| 874 | memcpy((void *) profp, &card->profile, |
| 875 | sizeof(struct capi_profile)); |
| 876 | return CAPI_NOERROR; |
| 877 | } |
| 878 | |
| 879 | EXPORT_SYMBOL(capi20_get_profile); |
| 880 | |
Robert P. J. Day | 37772ac | 2008-04-28 02:14:42 -0700 | [diff] [blame] | 881 | #ifdef AVMB1_COMPAT |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 882 | static int old_capi_manufacturer(unsigned int cmd, void __user *data) |
| 883 | { |
| 884 | avmb1_loadandconfigdef ldef; |
| 885 | avmb1_extcarddef cdef; |
| 886 | avmb1_resetdef rdef; |
| 887 | capicardparams cparams; |
| 888 | struct capi_ctr *card; |
| 889 | struct capi_driver *driver = NULL; |
| 890 | capiloaddata ldata; |
| 891 | struct list_head *l; |
| 892 | unsigned long flags; |
| 893 | int retval; |
| 894 | |
| 895 | switch (cmd) { |
| 896 | case AVMB1_ADDCARD: |
| 897 | case AVMB1_ADDCARD_WITH_TYPE: |
| 898 | if (cmd == AVMB1_ADDCARD) { |
| 899 | if ((retval = copy_from_user(&cdef, data, |
| 900 | sizeof(avmb1_carddef)))) |
| 901 | return retval; |
| 902 | cdef.cardtype = AVM_CARDTYPE_B1; |
| 903 | } else { |
| 904 | if ((retval = copy_from_user(&cdef, data, |
| 905 | sizeof(avmb1_extcarddef)))) |
| 906 | return retval; |
| 907 | } |
| 908 | cparams.port = cdef.port; |
| 909 | cparams.irq = cdef.irq; |
| 910 | cparams.cardnr = cdef.cardnr; |
| 911 | |
| 912 | read_lock_irqsave(&capi_drivers_list_lock, flags); |
| 913 | switch (cdef.cardtype) { |
| 914 | case AVM_CARDTYPE_B1: |
| 915 | list_for_each(l, &capi_drivers) { |
| 916 | driver = list_entry(l, struct capi_driver, list); |
| 917 | if (strcmp(driver->name, "b1isa") == 0) |
| 918 | break; |
| 919 | } |
| 920 | break; |
| 921 | case AVM_CARDTYPE_T1: |
| 922 | list_for_each(l, &capi_drivers) { |
| 923 | driver = list_entry(l, struct capi_driver, list); |
| 924 | if (strcmp(driver->name, "t1isa") == 0) |
| 925 | break; |
| 926 | } |
| 927 | break; |
| 928 | default: |
| 929 | driver = NULL; |
| 930 | break; |
| 931 | } |
| 932 | if (!driver) { |
| 933 | read_unlock_irqrestore(&capi_drivers_list_lock, flags); |
| 934 | printk(KERN_ERR "kcapi: driver not loaded.\n"); |
| 935 | return -EIO; |
| 936 | } |
| 937 | if (!driver->add_card) { |
| 938 | read_unlock_irqrestore(&capi_drivers_list_lock, flags); |
| 939 | printk(KERN_ERR "kcapi: driver has no add card function.\n"); |
| 940 | return -EIO; |
| 941 | } |
| 942 | |
| 943 | retval = driver->add_card(driver, &cparams); |
| 944 | read_unlock_irqrestore(&capi_drivers_list_lock, flags); |
| 945 | return retval; |
| 946 | |
| 947 | case AVMB1_LOAD: |
| 948 | case AVMB1_LOAD_AND_CONFIG: |
| 949 | |
| 950 | if (cmd == AVMB1_LOAD) { |
| 951 | if (copy_from_user(&ldef, data, |
| 952 | sizeof(avmb1_loaddef))) |
| 953 | return -EFAULT; |
| 954 | ldef.t4config.len = 0; |
| 955 | ldef.t4config.data = NULL; |
| 956 | } else { |
| 957 | if (copy_from_user(&ldef, data, |
| 958 | sizeof(avmb1_loadandconfigdef))) |
| 959 | return -EFAULT; |
| 960 | } |
| 961 | card = get_capi_ctr_by_nr(ldef.contr); |
Jesper Juhl | e8a285b | 2007-10-16 01:27:52 -0700 | [diff] [blame] | 962 | if (!card) |
| 963 | return -EINVAL; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 964 | card = capi_ctr_get(card); |
| 965 | if (!card) |
| 966 | return -ESRCH; |
Harvey Harrison | 2f9e9b6 | 2008-04-28 02:14:37 -0700 | [diff] [blame] | 967 | if (card->load_firmware == NULL) { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 968 | printk(KERN_DEBUG "kcapi: load: no load function\n"); |
Julia Lawall | 4d5392c | 2008-09-22 19:04:54 -0700 | [diff] [blame] | 969 | capi_ctr_put(card); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 970 | return -ESRCH; |
| 971 | } |
| 972 | |
| 973 | if (ldef.t4file.len <= 0) { |
| 974 | printk(KERN_DEBUG "kcapi: load: invalid parameter: length of t4file is %d ?\n", ldef.t4file.len); |
Julia Lawall | 4d5392c | 2008-09-22 19:04:54 -0700 | [diff] [blame] | 975 | capi_ctr_put(card); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 976 | return -EINVAL; |
| 977 | } |
Harvey Harrison | 2f9e9b6 | 2008-04-28 02:14:37 -0700 | [diff] [blame] | 978 | if (ldef.t4file.data == NULL) { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 979 | printk(KERN_DEBUG "kcapi: load: invalid parameter: dataptr is 0\n"); |
Julia Lawall | 4d5392c | 2008-09-22 19:04:54 -0700 | [diff] [blame] | 980 | capi_ctr_put(card); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 981 | return -EINVAL; |
| 982 | } |
| 983 | |
| 984 | ldata.firmware.user = 1; |
| 985 | ldata.firmware.data = ldef.t4file.data; |
| 986 | ldata.firmware.len = ldef.t4file.len; |
| 987 | ldata.configuration.user = 1; |
| 988 | ldata.configuration.data = ldef.t4config.data; |
| 989 | ldata.configuration.len = ldef.t4config.len; |
| 990 | |
| 991 | if (card->cardstate != CARD_DETECTED) { |
| 992 | printk(KERN_INFO "kcapi: load: contr=%d not in detect state\n", ldef.contr); |
Julia Lawall | 4d5392c | 2008-09-22 19:04:54 -0700 | [diff] [blame] | 993 | capi_ctr_put(card); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 994 | return -EBUSY; |
| 995 | } |
| 996 | card->cardstate = CARD_LOADING; |
| 997 | |
| 998 | retval = card->load_firmware(card, &ldata); |
| 999 | |
| 1000 | if (retval) { |
| 1001 | card->cardstate = CARD_DETECTED; |
| 1002 | capi_ctr_put(card); |
| 1003 | return retval; |
| 1004 | } |
| 1005 | |
| 1006 | while (card->cardstate != CARD_RUNNING) { |
| 1007 | |
| 1008 | msleep_interruptible(100); /* 0.1 sec */ |
| 1009 | |
| 1010 | if (signal_pending(current)) { |
| 1011 | capi_ctr_put(card); |
| 1012 | return -EINTR; |
| 1013 | } |
| 1014 | } |
| 1015 | capi_ctr_put(card); |
| 1016 | return 0; |
| 1017 | |
| 1018 | case AVMB1_RESETCARD: |
| 1019 | if (copy_from_user(&rdef, data, sizeof(avmb1_resetdef))) |
| 1020 | return -EFAULT; |
| 1021 | card = get_capi_ctr_by_nr(rdef.contr); |
| 1022 | if (!card) |
| 1023 | return -ESRCH; |
| 1024 | |
| 1025 | if (card->cardstate == CARD_DETECTED) |
| 1026 | return 0; |
| 1027 | |
| 1028 | card->reset_ctr(card); |
| 1029 | |
| 1030 | while (card->cardstate > CARD_DETECTED) { |
| 1031 | |
| 1032 | msleep_interruptible(100); /* 0.1 sec */ |
| 1033 | |
| 1034 | if (signal_pending(current)) |
| 1035 | return -EINTR; |
| 1036 | } |
| 1037 | return 0; |
| 1038 | |
| 1039 | } |
| 1040 | return -EINVAL; |
| 1041 | } |
| 1042 | #endif |
| 1043 | |
Tilman Schmidt | 554f200 | 2009-04-23 02:24:21 +0000 | [diff] [blame] | 1044 | /** |
| 1045 | * capi20_manufacturer() - CAPI 2.0 operation CAPI_MANUFACTURER |
| 1046 | * @cmd: command. |
| 1047 | * @data: parameter. |
| 1048 | * |
| 1049 | * Perform manufacturer specific command. |
| 1050 | * Return value: CAPI result code |
| 1051 | */ |
| 1052 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1053 | int capi20_manufacturer(unsigned int cmd, void __user *data) |
| 1054 | { |
| 1055 | struct capi_ctr *card; |
| 1056 | |
| 1057 | switch (cmd) { |
Robert P. J. Day | 37772ac | 2008-04-28 02:14:42 -0700 | [diff] [blame] | 1058 | #ifdef AVMB1_COMPAT |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1059 | case AVMB1_LOAD: |
| 1060 | case AVMB1_LOAD_AND_CONFIG: |
| 1061 | case AVMB1_RESETCARD: |
| 1062 | case AVMB1_GET_CARDINFO: |
| 1063 | case AVMB1_REMOVECARD: |
| 1064 | return old_capi_manufacturer(cmd, data); |
| 1065 | #endif |
| 1066 | case KCAPI_CMD_TRACE: |
| 1067 | { |
| 1068 | kcapi_flagdef fdef; |
| 1069 | |
| 1070 | if (copy_from_user(&fdef, data, sizeof(kcapi_flagdef))) |
| 1071 | return -EFAULT; |
| 1072 | |
| 1073 | card = get_capi_ctr_by_nr(fdef.contr); |
| 1074 | if (!card) |
| 1075 | return -ESRCH; |
| 1076 | |
| 1077 | card->traceflag = fdef.flag; |
Karsten Keil | 17f0cd2 | 2007-02-28 20:13:50 -0800 | [diff] [blame] | 1078 | printk(KERN_INFO "kcapi: contr [%03d] set trace=%d\n", |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1079 | card->cnr, card->traceflag); |
| 1080 | return 0; |
| 1081 | } |
| 1082 | case KCAPI_CMD_ADDCARD: |
| 1083 | { |
| 1084 | struct list_head *l; |
| 1085 | struct capi_driver *driver = NULL; |
| 1086 | capicardparams cparams; |
| 1087 | kcapi_carddef cdef; |
| 1088 | int retval; |
| 1089 | |
| 1090 | if ((retval = copy_from_user(&cdef, data, sizeof(cdef)))) |
| 1091 | return retval; |
| 1092 | |
| 1093 | cparams.port = cdef.port; |
| 1094 | cparams.irq = cdef.irq; |
| 1095 | cparams.membase = cdef.membase; |
| 1096 | cparams.cardnr = cdef.cardnr; |
| 1097 | cparams.cardtype = 0; |
| 1098 | cdef.driver[sizeof(cdef.driver)-1] = 0; |
| 1099 | |
| 1100 | list_for_each(l, &capi_drivers) { |
| 1101 | driver = list_entry(l, struct capi_driver, list); |
| 1102 | if (strcmp(driver->name, cdef.driver) == 0) |
| 1103 | break; |
| 1104 | } |
Harvey Harrison | 2f9e9b6 | 2008-04-28 02:14:37 -0700 | [diff] [blame] | 1105 | if (driver == NULL) { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1106 | printk(KERN_ERR "kcapi: driver \"%s\" not loaded.\n", |
| 1107 | cdef.driver); |
| 1108 | return -ESRCH; |
| 1109 | } |
| 1110 | |
| 1111 | if (!driver->add_card) { |
| 1112 | printk(KERN_ERR "kcapi: driver \"%s\" has no add card function.\n", cdef.driver); |
| 1113 | return -EIO; |
| 1114 | } |
| 1115 | |
| 1116 | return driver->add_card(driver, &cparams); |
| 1117 | } |
| 1118 | |
| 1119 | default: |
| 1120 | printk(KERN_ERR "kcapi: manufacturer command %d unknown.\n", |
| 1121 | cmd); |
| 1122 | break; |
| 1123 | |
| 1124 | } |
| 1125 | return -EINVAL; |
| 1126 | } |
| 1127 | |
| 1128 | EXPORT_SYMBOL(capi20_manufacturer); |
| 1129 | |
| 1130 | /* temporary hack */ |
Tilman Schmidt | 554f200 | 2009-04-23 02:24:21 +0000 | [diff] [blame] | 1131 | |
| 1132 | /** |
| 1133 | * capi20_set_callback() - set CAPI application notification callback function |
| 1134 | * @ap: CAPI application descriptor structure. |
| 1135 | * @callback: callback function (NULL to remove). |
| 1136 | * |
| 1137 | * If not NULL, the callback function will be called to notify the |
| 1138 | * application of the addition or removal of a controller. |
| 1139 | * The first argument (cmd) will tell whether the controller was added |
| 1140 | * (KCI_CONTRUP) or removed (KCI_CONTRDOWN). |
| 1141 | * The second argument (contr) will be the controller number. |
| 1142 | * For cmd==KCI_CONTRUP the third argument (data) will be a pointer to the |
| 1143 | * new controller's capability profile structure. |
| 1144 | */ |
| 1145 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1146 | void capi20_set_callback(struct capi20_appl *ap, |
| 1147 | void (*callback) (unsigned int cmd, __u32 contr, void *data)) |
| 1148 | { |
| 1149 | ap->callback = callback; |
| 1150 | } |
| 1151 | |
| 1152 | EXPORT_SYMBOL(capi20_set_callback); |
| 1153 | |
| 1154 | /* ------------------------------------------------------------- */ |
| 1155 | /* -------- Init & Cleanup ------------------------------------- */ |
| 1156 | /* ------------------------------------------------------------- */ |
| 1157 | |
| 1158 | /* |
| 1159 | * init / exit functions |
| 1160 | */ |
| 1161 | |
| 1162 | static int __init kcapi_init(void) |
| 1163 | { |
Jan Kiszka | 88549d6 | 2010-02-08 10:12:09 +0000 | [diff] [blame^] | 1164 | int err; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1165 | |
Jan Kiszka | 88549d6 | 2010-02-08 10:12:09 +0000 | [diff] [blame^] | 1166 | err = cdebug_init(); |
| 1167 | if (!err) |
| 1168 | kcapi_proc_init(); |
| 1169 | return err; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1170 | } |
| 1171 | |
| 1172 | static void __exit kcapi_exit(void) |
| 1173 | { |
| 1174 | kcapi_proc_exit(); |
| 1175 | |
| 1176 | /* make sure all notifiers are finished */ |
| 1177 | flush_scheduled_work(); |
Karsten Keil | 17f0cd2 | 2007-02-28 20:13:50 -0800 | [diff] [blame] | 1178 | cdebug_exit(); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1179 | } |
| 1180 | |
| 1181 | module_init(kcapi_init); |
| 1182 | module_exit(kcapi_exit); |