drivers/isdn/sc/command.c

   1 /* $Id: command.c,v 1.4.10.1 2001/09/23 22:24:59 kai Exp $
   2  *
   3  * Copyright (C) 1996  SpellCaster Telecommunications Inc.
   4  *
   5  * This software may be used and distributed according to the terms
   6  * of the GNU General Public License, incorporated herein by reference.
   7  *
   8  * For more information, please contact gpl-info@spellcast.com or write:
   9  *
  10  *     SpellCaster Telecommunications Inc.
  11  *     5621 Finch Avenue East, Unit #3
  12  *     Scarborough, Ontario  Canada
  13  *     M1B 2T9
  14  *     +1 (416) 297-8565
  15  *     +1 (416) 297-6433 Facsimile
  16  */
  17
  18 #include <linux/module.h>
  19 #include "includes.h"           /* This must be first */
  20 #include "hardware.h"
  21 #include "message.h"
  22 #include "card.h"
  23 #include "scioc.h"
  24
  25 static int dial(int card, unsigned long channel, setup_parm setup);
  26 static int hangup(int card, unsigned long channel);
  27 static int answer(int card, unsigned long channel);
  28 static int clreaz(int card, unsigned long channel);
  29 static int seteaz(int card, unsigned long channel, char *);
  30 static int setl2(int card, unsigned long arg);
  31 static int setl3(int card, unsigned long arg);
  32 static int acceptb(int card, unsigned long channel);
  33
  34 extern int cinst;
  35 extern board *sc_adapter[];
  36
  37 extern int sc_ioctl(int, scs_ioctl *);
  38 extern int setup_buffers(int, int, unsigned int);
  39 extern int indicate_status(int, int,ulong,char*);
  40 extern void check_reset(unsigned long);
  41 extern int send_and_receive(int, unsigned int, unsigned char, unsigned char,
  42                 unsigned char, unsigned char, unsigned char, unsigned char *,
  43                 RspMessage *, int);
  44 extern int sendmessage(int, unsigned int, unsigned int, unsigned int,
  45                 unsigned int, unsigned int, unsigned int, unsigned int *);
  46
  47 #ifdef DEBUG
  48 /*
  49  * Translate command codes to strings
  50  */
  51 static char *commands[] = { "ISDN_CMD_IOCTL",
  52                             "ISDN_CMD_DIAL",
  53                             "ISDN_CMD_ACCEPTB",
  54                             "ISDN_CMD_ACCEPTB",
  55                             "ISDN_CMD_HANGUP",
  56                             "ISDN_CMD_CLREAZ",
  57                             "ISDN_CMD_SETEAZ",
  58                             NULL,
  59                             NULL,
  60                             NULL,
  61                             "ISDN_CMD_SETL2",
  62                             NULL,
  63                             "ISDN_CMD_SETL3",
  64                             NULL,
  65                             NULL,
  66                             NULL,
  67                             NULL,
  68                             NULL, };
  69
  70 /*
  71  * Translates ISDN4Linux protocol codes to strings for debug messages
  72  */
  73 static char *l3protos[] = { "ISDN_PROTO_L3_TRANS" };
  74 static char *l2protos[] = { "ISDN_PROTO_L2_X75I",
  75                             "ISDN_PROTO_L2_X75UI",
  76                             "ISDN_PROTO_L2_X75BUI",
  77                             "ISDN_PROTO_L2_HDLC",
  78                             "ISDN_PROTO_L2_TRANS" };
  79 #endif
  80
  81 int get_card_from_id(int driver)
  82 {
  83         int i;
  84
  85         for(i = 0 ; i < cinst ; i++) {
  86                 if(sc_adapter[i]->driverId == driver)
  87                         return i;
  88         }
  89         return -ENODEV;
  90 }
  91
  92 /*
  93  * command
  94  */
  95
  96 int command(isdn_ctrl *cmd)
  97 {
  98         int card;
  99
 100         card = get_card_from_id(cmd->driver);
 101         if(!IS_VALID_CARD(card)) {
 102                 pr_debug("Invalid param: %d is not a valid card id\n", card);
 103                 return -ENODEV;
 104         }
 105
 106         /*
 107          * Dispatch the command
 108          */
 109         switch(cmd->command) {
 110         case ISDN_CMD_IOCTL:
 111         {
 112                 unsigned long   cmdptr;
 113                 scs_ioctl       ioc;
 114
 115                 memcpy(&cmdptr, cmd->parm.num, sizeof(unsigned long));
 116                 if (copy_from_user(&ioc, (scs_ioctl __user *)cmdptr,
 117                                    sizeof(scs_ioctl))) {
 118                         pr_debug("%s: Failed to verify user space 0x%lx\n",
 119                                 sc_adapter[card]->devicename, cmdptr);
 120                         return -EFAULT;
 121                 }
 122                 return sc_ioctl(card, &ioc);
 123         }
 124         case ISDN_CMD_DIAL:
 125                 return dial(card, cmd->arg, cmd->parm.setup);
 126         case ISDN_CMD_HANGUP:
 127                 return hangup(card, cmd->arg);
 128         case ISDN_CMD_ACCEPTD:
 129                 return answer(card, cmd->arg);
 130         case ISDN_CMD_ACCEPTB:
 131                 return acceptb(card, cmd->arg);
 132         case ISDN_CMD_CLREAZ:
 133                 return clreaz(card, cmd->arg);
 134         case ISDN_CMD_SETEAZ:
 135                 return seteaz(card, cmd->arg, cmd->parm.num);
 136         case ISDN_CMD_SETL2:
 137                 return setl2(card, cmd->arg);
 138         case ISDN_CMD_SETL3:
 139                 return setl3(card, cmd->arg);
 140         default:
 141                 return -EINVAL;
 142         }
 143         return 0;
 144 }
 145
 146 /*
 147  * start the onboard firmware
 148  */
 149 int startproc(int card)
 150 {
 151         int status;
 152
 153         if(!IS_VALID_CARD(card)) {
 154                 pr_debug("Invalid param: %d is not a valid card id\n", card);
 155                 return -ENODEV;
 156         }
 157
 158         /*
 159          * send start msg
 160          */
 161         status = sendmessage(card, CMPID,cmReqType2,
 162                           cmReqClass0,
 163                           cmReqStartProc,
 164                           0,0,NULL);
 165         pr_debug("%s: Sent startProc\n", sc_adapter[card]->devicename);
 166
 167         return status;
 168 }
 169
 170
 171 /*
 172  * Dials the number passed in
 173  */
 174 static int dial(int card, unsigned long channel, setup_parm setup)
 175 {
 176         int status;
 177         char Phone[48];
 178
 179         if(!IS_VALID_CARD(card)) {
 180                 pr_debug("Invalid param: %d is not a valid card id\n", card);
 181                 return -ENODEV;
 182         }
 183
 184         /*extract ISDN number to dial from eaz/msn string*/
 185         strcpy(Phone,setup.phone);
 186
 187         /*send the connection message*/
 188         status = sendmessage(card, CEPID,ceReqTypePhy,
 189                                 ceReqClass1,
 190                                 ceReqPhyConnect,
 191                                 (unsigned char) channel+1,
 192                                 strlen(Phone),
 193                                 (unsigned int *) Phone);
 194
 195         pr_debug("%s: Dialing %s on channel %lu\n",
 196                 sc_adapter[card]->devicename, Phone, channel+1);
 197
 198         return status;
 199 }
 200
 201 /*
 202  * Answer an incoming call
 203  */
 204 static int answer(int card, unsigned long channel)
 205 {
 206         if(!IS_VALID_CARD(card)) {
 207                 pr_debug("Invalid param: %d is not a valid card id\n", card);
 208                 return -ENODEV;
 209         }
 210
 211         if(setup_buffers(card, channel+1, BUFFER_SIZE)) {
 212                 hangup(card, channel+1);
 213                 return -ENOBUFS;
 214         }
 215
 216         indicate_status(card, ISDN_STAT_BCONN,channel,NULL);
 217         pr_debug("%s: Answered incoming call on channel %lu\n",
 218                 sc_adapter[card]->devicename, channel+1);
 219         return 0;
 220 }
 221
 222 /*
 223  * Hangup up the call on specified channel
 224  */
 225 static int hangup(int card, unsigned long channel)
 226 {
 227         int status;
 228
 229         if(!IS_VALID_CARD(card)) {
 230                 pr_debug("Invalid param: %d is not a valid card id\n", card);
 231                 return -ENODEV;
 232         }
 233
 234         status = sendmessage(card, CEPID, ceReqTypePhy,
 235                                                  ceReqClass1,
 236                                                  ceReqPhyDisconnect,
 237                                                  (unsigned char) channel+1,
 238                                                  0,
 239                                                  NULL);
 240         pr_debug("%s: Sent HANGUP message to channel %lu\n",
 241                 sc_adapter[card]->devicename, channel+1);
 242         return status;
 243 }
 244
 245 /*
 246  * Set the layer 2 protocol (X.25, HDLC, Raw)
 247  */
 248 static int setl2(int card, unsigned long arg)
 249 {
 250         int status =0;
 251         int protocol,channel;
 252
 253         if(!IS_VALID_CARD(card)) {
 254                 pr_debug("Invalid param: %d is not a valid card id\n", card);
 255                 return -ENODEV;
 256         }
 257         protocol = arg >> 8;
 258         channel = arg & 0xff;
 259         sc_adapter[card]->channel[channel].l2_proto = protocol;
 260
 261         /*
 262          * check that the adapter is also set to the correct protocol
 263          */
 264         pr_debug("%s: Sending GetFrameFormat for channel %d\n",
 265                 sc_adapter[card]->devicename, channel+1);
 266         status = sendmessage(card, CEPID, ceReqTypeCall,
 267                                 ceReqClass0,
 268                                 ceReqCallGetFrameFormat,
 269                                 (unsigned char)channel+1,
 270                                 1,
 271                                 (unsigned int *) protocol);
 272         if(status)
 273                 return status;
 274         return 0;
 275 }
 276
 277 /*
 278  * Set the layer 3 protocol
 279  */
 280 static int setl3(int card, unsigned long channel)
 281 {
 282         int protocol = channel >> 8;
 283
 284         if(!IS_VALID_CARD(card)) {
 285                 pr_debug("Invalid param: %d is not a valid card id\n", card);
 286                 return -ENODEV;
 287         }
 288
 289         sc_adapter[card]->channel[channel].l3_proto = protocol;
 290         return 0;
 291 }
 292
 293 static int acceptb(int card, unsigned long channel)
 294 {
 295         if(!IS_VALID_CARD(card)) {
 296                 pr_debug("Invalid param: %d is not a valid card id\n", card);
 297                 return -ENODEV;
 298         }
 299
 300         if(setup_buffers(card, channel+1, BUFFER_SIZE))
 301         {
 302                 hangup(card, channel+1);
 303                 return -ENOBUFS;
 304         }
 305
 306         pr_debug("%s: B-Channel connection accepted on channel %lu\n",
 307                 sc_adapter[card]->devicename, channel+1);
 308         indicate_status(card, ISDN_STAT_BCONN, channel, NULL);
 309         return 0;
 310 }
 311
 312 static int clreaz(int card, unsigned long arg)
 313 {
 314         if(!IS_VALID_CARD(card)) {
 315                 pr_debug("Invalid param: %d is not a valid card id\n", card);
 316                 return -ENODEV;
 317         }
 318
 319         strcpy(sc_adapter[card]->channel[arg].eazlist, "");
 320         sc_adapter[card]->channel[arg].eazclear = 1;
 321         pr_debug("%s: EAZ List cleared for channel %lu\n",
 322                 sc_adapter[card]->devicename, arg+1);
 323         return 0;
 324 }
 325
 326 static int seteaz(int card, unsigned long arg, char *num)
 327 {
 328         if(!IS_VALID_CARD(card)) {
 329                 pr_debug("Invalid param: %d is not a valid card id\n", card);
 330                 return -ENODEV;
 331         }
 332
 333         strcpy(sc_adapter[card]->channel[arg].eazlist, num);
 334         sc_adapter[card]->channel[arg].eazclear = 0;
 335         pr_debug("%s: EAZ list for channel %lu set to: %s\n",
 336                 sc_adapter[card]->devicename, arg+1,
 337                 sc_adapter[card]->channel[arg].eazlist);
 338         return 0;
 339 }
 340
 341 int reset(int card)
 342 {
 343         unsigned long flags;
 344
 345         if(!IS_VALID_CARD(card)) {
 346                 pr_debug("Invalid param: %d is not a valid card id\n", card);
 347                 return -ENODEV;
 348         }
 349
 350         indicate_status(card, ISDN_STAT_STOP, 0, NULL);
 351
 352         if(sc_adapter[card]->EngineUp) {
 353                 del_timer(&sc_adapter[card]->stat_timer);
 354         }
 355
 356         sc_adapter[card]->EngineUp = 0;
 357
 358         spin_lock_irqsave(&sc_adapter[card]->lock, flags);
 359         init_timer(&sc_adapter[card]->reset_timer);
 360         sc_adapter[card]->reset_timer.function = check_reset;
 361         sc_adapter[card]->reset_timer.data = card;
 362         sc_adapter[card]->reset_timer.expires = jiffies + CHECKRESET_TIME;
 363         add_timer(&sc_adapter[card]->reset_timer);
 364         spin_unlock_irqrestore(&sc_adapter[card]->lock, flags);
 365
 366         outb(0x1,sc_adapter[card]->ioport[SFT_RESET]);
 367
 368         pr_debug("%s: Adapter Reset\n", sc_adapter[card]->devicename);
 369         return 0;
 370 }
 371
 372 void flushreadfifo (int card)
 373 {
 374         while(inb(sc_adapter[card]->ioport[FIFO_STATUS]) & RF_HAS_DATA)
 375                 inb(sc_adapter[card]->ioport[FIFO_READ]);
 376 }