Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1 | /* $Id: isdn_tty.c,v 1.1.2.3 2004/02/10 01:07:13 keil Exp $ |
| 2 | * |
| 3 | * Linux ISDN subsystem, tty functions and AT-command emulator (linklevel). |
| 4 | * |
| 5 | * Copyright 1994-1999 by Fritz Elfert (fritz@isdn4linux.de) |
| 6 | * Copyright 1995,96 by Thinking Objects Software GmbH Wuerzburg |
| 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 | #undef ISDN_TTY_STAT_DEBUG |
| 13 | |
| 14 | #include <linux/config.h> |
| 15 | #include <linux/isdn.h> |
| 16 | #include <linux/delay.h> |
| 17 | #include "isdn_common.h" |
| 18 | #include "isdn_tty.h" |
| 19 | #ifdef CONFIG_ISDN_AUDIO |
| 20 | #include "isdn_audio.h" |
| 21 | #define VBUF 0x3e0 |
| 22 | #define VBUFX (VBUF/16) |
| 23 | #endif |
| 24 | |
| 25 | #define FIX_FILE_TRANSFER |
| 26 | #define DUMMY_HAYES_AT |
| 27 | |
| 28 | /* Prototypes */ |
| 29 | |
| 30 | static int isdn_tty_edit_at(const char *, int, modem_info *); |
| 31 | static void isdn_tty_check_esc(const u_char *, u_char, int, int *, u_long *); |
| 32 | static void isdn_tty_modem_reset_regs(modem_info *, int); |
| 33 | static void isdn_tty_cmd_ATA(modem_info *); |
| 34 | static void isdn_tty_flush_buffer(struct tty_struct *); |
| 35 | static void isdn_tty_modem_result(int, modem_info *); |
| 36 | #ifdef CONFIG_ISDN_AUDIO |
| 37 | static int isdn_tty_countDLE(unsigned char *, int); |
| 38 | #endif |
| 39 | |
| 40 | /* Leave this unchanged unless you know what you do! */ |
| 41 | #define MODEM_PARANOIA_CHECK |
| 42 | #define MODEM_DO_RESTART |
| 43 | |
| 44 | static int bit2si[8] = |
| 45 | {1, 5, 7, 7, 7, 7, 7, 7}; |
| 46 | static int si2bit[8] = |
| 47 | {4, 1, 4, 4, 4, 4, 4, 4}; |
| 48 | |
| 49 | char *isdn_tty_revision = "$Revision: 1.1.2.3 $"; |
| 50 | |
| 51 | |
| 52 | /* isdn_tty_try_read() is called from within isdn_tty_rcv_skb() |
| 53 | * to stuff incoming data directly into a tty's flip-buffer. This |
| 54 | * is done to speed up tty-receiving if the receive-queue is empty. |
| 55 | * This routine MUST be called with interrupts off. |
| 56 | * Return: |
| 57 | * 1 = Success |
| 58 | * 0 = Failure, data has to be buffered and later processed by |
| 59 | * isdn_tty_readmodem(). |
| 60 | */ |
| 61 | static int |
| 62 | isdn_tty_try_read(modem_info * info, struct sk_buff *skb) |
| 63 | { |
| 64 | int c; |
| 65 | int len; |
| 66 | struct tty_struct *tty; |
Alan Cox | 33f0f88 | 2006-01-09 20:54:13 -0800 | [diff] [blame] | 67 | char last; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 68 | |
| 69 | if (info->online) { |
| 70 | if ((tty = info->tty)) { |
| 71 | if (info->mcr & UART_MCR_RTS) { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 72 | len = skb->len |
| 73 | #ifdef CONFIG_ISDN_AUDIO |
| 74 | + ISDN_AUDIO_SKB_DLECOUNT(skb) |
| 75 | #endif |
| 76 | ; |
Alan Cox | 33f0f88 | 2006-01-09 20:54:13 -0800 | [diff] [blame] | 77 | |
| 78 | c = tty_buffer_request_room(tty, len); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 79 | if (c >= len) { |
| 80 | #ifdef CONFIG_ISDN_AUDIO |
Alan Cox | 33f0f88 | 2006-01-09 20:54:13 -0800 | [diff] [blame] | 81 | if (ISDN_AUDIO_SKB_DLECOUNT(skb)) { |
| 82 | int l = skb->len; |
| 83 | unsigned char *dp = skb->data; |
| 84 | while (--l) { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 85 | if (*skb->data == DLE) |
| 86 | tty_insert_flip_char(tty, DLE, 0); |
Alan Cox | 33f0f88 | 2006-01-09 20:54:13 -0800 | [diff] [blame] | 87 | tty_insert_flip_char(tty, *dp++, 0); |
| 88 | } |
| 89 | last = *dp; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 90 | } else { |
| 91 | #endif |
Alan Cox | 33f0f88 | 2006-01-09 20:54:13 -0800 | [diff] [blame] | 92 | if(len > 1) |
| 93 | tty_insert_flip_string(tty, skb->data, len - 1); |
| 94 | last = skb->data[len - 1]; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 95 | #ifdef CONFIG_ISDN_AUDIO |
| 96 | } |
| 97 | #endif |
| 98 | if (info->emu.mdmreg[REG_CPPP] & BIT_CPPP) |
Alan Cox | 33f0f88 | 2006-01-09 20:54:13 -0800 | [diff] [blame] | 99 | tty_insert_flip_char(tty, last, 0xFF); |
| 100 | else |
| 101 | tty_insert_flip_char(tty, last, TTY_NORMAL); |
| 102 | tty_flip_buffer_push(tty); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 103 | kfree_skb(skb); |
| 104 | return 1; |
| 105 | } |
| 106 | } |
| 107 | } |
| 108 | } |
| 109 | return 0; |
| 110 | } |
| 111 | |
| 112 | /* isdn_tty_readmodem() is called periodically from within timer-interrupt. |
| 113 | * It tries getting received data from the receive queue an stuff it into |
| 114 | * the tty's flip-buffer. |
| 115 | */ |
| 116 | void |
| 117 | isdn_tty_readmodem(void) |
| 118 | { |
| 119 | int resched = 0; |
| 120 | int midx; |
| 121 | int i; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 122 | int r; |
| 123 | struct tty_struct *tty; |
| 124 | modem_info *info; |
| 125 | |
| 126 | for (i = 0; i < ISDN_MAX_CHANNELS; i++) { |
| 127 | if ((midx = dev->m_idx[i]) >= 0) { |
| 128 | info = &dev->mdm.info[midx]; |
| 129 | if (info->online) { |
| 130 | r = 0; |
| 131 | #ifdef CONFIG_ISDN_AUDIO |
| 132 | isdn_audio_eval_dtmf(info); |
| 133 | if ((info->vonline & 1) && (info->emu.vpar[1])) |
| 134 | isdn_audio_eval_silence(info); |
| 135 | #endif |
| 136 | if ((tty = info->tty)) { |
| 137 | if (info->mcr & UART_MCR_RTS) { |
Alan Cox | 33f0f88 | 2006-01-09 20:54:13 -0800 | [diff] [blame] | 138 | /* CISCO AsyncPPP Hack */ |
| 139 | if (!(info->emu.mdmreg[REG_CPPP] & BIT_CPPP)) |
| 140 | r = isdn_readbchan_tty(info->isdn_driver, info->isdn_channel, tty, 0); |
| 141 | else |
| 142 | r = isdn_readbchan_tty(info->isdn_driver, info->isdn_channel, tty, 1); |
| 143 | if (r) |
| 144 | tty_flip_buffer_push(tty); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 145 | } else |
| 146 | r = 1; |
| 147 | } else |
| 148 | r = 1; |
| 149 | if (r) { |
| 150 | info->rcvsched = 0; |
| 151 | resched = 1; |
| 152 | } else |
| 153 | info->rcvsched = 1; |
| 154 | } |
| 155 | } |
| 156 | } |
| 157 | if (!resched) |
| 158 | isdn_timer_ctrl(ISDN_TIMER_MODEMREAD, 0); |
| 159 | } |
| 160 | |
| 161 | int |
| 162 | isdn_tty_rcv_skb(int i, int di, int channel, struct sk_buff *skb) |
| 163 | { |
| 164 | ulong flags; |
| 165 | int midx; |
| 166 | #ifdef CONFIG_ISDN_AUDIO |
| 167 | int ifmt; |
| 168 | #endif |
| 169 | modem_info *info; |
| 170 | |
| 171 | if ((midx = dev->m_idx[i]) < 0) { |
| 172 | /* if midx is invalid, packet is not for tty */ |
| 173 | return 0; |
| 174 | } |
| 175 | info = &dev->mdm.info[midx]; |
| 176 | #ifdef CONFIG_ISDN_AUDIO |
| 177 | ifmt = 1; |
| 178 | |
| 179 | if ((info->vonline) && (!info->emu.vpar[4])) |
| 180 | isdn_audio_calc_dtmf(info, skb->data, skb->len, ifmt); |
| 181 | if ((info->vonline & 1) && (info->emu.vpar[1])) |
| 182 | isdn_audio_calc_silence(info, skb->data, skb->len, ifmt); |
| 183 | #endif |
| 184 | if ((info->online < 2) |
| 185 | #ifdef CONFIG_ISDN_AUDIO |
| 186 | && (!(info->vonline & 1)) |
| 187 | #endif |
| 188 | ) { |
| 189 | /* If Modem not listening, drop data */ |
| 190 | kfree_skb(skb); |
| 191 | return 1; |
| 192 | } |
| 193 | if (info->emu.mdmreg[REG_T70] & BIT_T70) { |
| 194 | if (info->emu.mdmreg[REG_T70] & BIT_T70_EXT) { |
| 195 | /* T.70 decoding: throw away the T.70 header (2 or 4 bytes) */ |
| 196 | if (skb->data[0] == 3) /* pure data packet -> 4 byte headers */ |
| 197 | skb_pull(skb, 4); |
| 198 | else |
| 199 | if (skb->data[0] == 1) /* keepalive packet -> 2 byte hdr */ |
| 200 | skb_pull(skb, 2); |
| 201 | } else |
| 202 | /* T.70 decoding: Simply throw away the T.70 header (4 bytes) */ |
| 203 | if ((skb->data[0] == 1) && ((skb->data[1] == 0) || (skb->data[1] == 1))) |
| 204 | skb_pull(skb, 4); |
| 205 | } |
| 206 | #ifdef CONFIG_ISDN_AUDIO |
| 207 | ISDN_AUDIO_SKB_DLECOUNT(skb) = 0; |
| 208 | ISDN_AUDIO_SKB_LOCK(skb) = 0; |
| 209 | if (info->vonline & 1) { |
| 210 | /* voice conversion/compression */ |
| 211 | switch (info->emu.vpar[3]) { |
| 212 | case 2: |
| 213 | case 3: |
| 214 | case 4: |
| 215 | /* adpcm |
| 216 | * Since compressed data takes less |
| 217 | * space, we can overwrite the buffer. |
| 218 | */ |
| 219 | skb_trim(skb, isdn_audio_xlaw2adpcm(info->adpcmr, |
| 220 | ifmt, |
| 221 | skb->data, |
| 222 | skb->data, |
| 223 | skb->len)); |
| 224 | break; |
| 225 | case 5: |
| 226 | /* a-law */ |
| 227 | if (!ifmt) |
| 228 | isdn_audio_ulaw2alaw(skb->data, skb->len); |
| 229 | break; |
| 230 | case 6: |
| 231 | /* u-law */ |
| 232 | if (ifmt) |
| 233 | isdn_audio_alaw2ulaw(skb->data, skb->len); |
| 234 | break; |
| 235 | } |
| 236 | ISDN_AUDIO_SKB_DLECOUNT(skb) = |
| 237 | isdn_tty_countDLE(skb->data, skb->len); |
| 238 | } |
| 239 | #ifdef CONFIG_ISDN_TTY_FAX |
| 240 | else { |
| 241 | if (info->faxonline & 2) { |
| 242 | isdn_tty_fax_bitorder(info, skb); |
| 243 | ISDN_AUDIO_SKB_DLECOUNT(skb) = |
| 244 | isdn_tty_countDLE(skb->data, skb->len); |
| 245 | } |
| 246 | } |
| 247 | #endif |
| 248 | #endif |
Alan Cox | 33f0f88 | 2006-01-09 20:54:13 -0800 | [diff] [blame] | 249 | /* Try to deliver directly via tty-buf if queue is empty */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 250 | spin_lock_irqsave(&info->readlock, flags); |
| 251 | if (skb_queue_empty(&dev->drv[di]->rpqueue[channel])) |
| 252 | if (isdn_tty_try_read(info, skb)) { |
| 253 | spin_unlock_irqrestore(&info->readlock, flags); |
| 254 | return 1; |
| 255 | } |
| 256 | /* Direct deliver failed or queue wasn't empty. |
| 257 | * Queue up for later dequeueing via timer-irq. |
| 258 | */ |
| 259 | __skb_queue_tail(&dev->drv[di]->rpqueue[channel], skb); |
| 260 | dev->drv[di]->rcvcount[channel] += |
| 261 | (skb->len |
| 262 | #ifdef CONFIG_ISDN_AUDIO |
| 263 | + ISDN_AUDIO_SKB_DLECOUNT(skb) |
| 264 | #endif |
| 265 | ); |
| 266 | spin_unlock_irqrestore(&info->readlock, flags); |
| 267 | /* Schedule dequeuing */ |
| 268 | if ((dev->modempoll) && (info->rcvsched)) |
| 269 | isdn_timer_ctrl(ISDN_TIMER_MODEMREAD, 1); |
| 270 | return 1; |
| 271 | } |
| 272 | |
Adrian Bunk | 3e206b0 | 2005-06-25 14:58:35 -0700 | [diff] [blame] | 273 | static void |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 274 | isdn_tty_cleanup_xmit(modem_info * info) |
| 275 | { |
| 276 | skb_queue_purge(&info->xmit_queue); |
| 277 | #ifdef CONFIG_ISDN_AUDIO |
| 278 | skb_queue_purge(&info->dtmf_queue); |
| 279 | #endif |
| 280 | } |
| 281 | |
| 282 | static void |
| 283 | isdn_tty_tint(modem_info * info) |
| 284 | { |
| 285 | struct sk_buff *skb = skb_dequeue(&info->xmit_queue); |
| 286 | int len, slen; |
| 287 | |
| 288 | if (!skb) |
| 289 | return; |
| 290 | len = skb->len; |
| 291 | if ((slen = isdn_writebuf_skb_stub(info->isdn_driver, |
| 292 | info->isdn_channel, 1, skb)) == len) { |
| 293 | struct tty_struct *tty = info->tty; |
| 294 | info->send_outstanding++; |
| 295 | info->msr &= ~UART_MSR_CTS; |
| 296 | info->lsr &= ~UART_LSR_TEMT; |
| 297 | tty_wakeup(tty); |
| 298 | return; |
| 299 | } |
| 300 | if (slen < 0) { |
| 301 | /* Error: no channel, already shutdown, or wrong parameter */ |
| 302 | dev_kfree_skb(skb); |
| 303 | return; |
| 304 | } |
| 305 | skb_queue_head(&info->xmit_queue, skb); |
| 306 | } |
| 307 | |
| 308 | #ifdef CONFIG_ISDN_AUDIO |
| 309 | static int |
| 310 | isdn_tty_countDLE(unsigned char *buf, int len) |
| 311 | { |
| 312 | int count = 0; |
| 313 | |
| 314 | while (len--) |
| 315 | if (*buf++ == DLE) |
| 316 | count++; |
| 317 | return count; |
| 318 | } |
| 319 | |
| 320 | /* This routine is called from within isdn_tty_write() to perform |
| 321 | * DLE-decoding when sending audio-data. |
| 322 | */ |
| 323 | static int |
| 324 | isdn_tty_handleDLEdown(modem_info * info, atemu * m, int len) |
| 325 | { |
| 326 | unsigned char *p = &info->xmit_buf[info->xmit_count]; |
| 327 | int count = 0; |
| 328 | |
| 329 | while (len > 0) { |
| 330 | if (m->lastDLE) { |
| 331 | m->lastDLE = 0; |
| 332 | switch (*p) { |
| 333 | case DLE: |
| 334 | /* Escape code */ |
| 335 | if (len > 1) |
| 336 | memmove(p, p + 1, len - 1); |
| 337 | p--; |
| 338 | count++; |
| 339 | break; |
| 340 | case ETX: |
| 341 | /* End of data */ |
| 342 | info->vonline |= 4; |
| 343 | return count; |
| 344 | case DC4: |
| 345 | /* Abort RX */ |
| 346 | info->vonline &= ~1; |
| 347 | #ifdef ISDN_DEBUG_MODEM_VOICE |
| 348 | printk(KERN_DEBUG |
| 349 | "DLEdown: got DLE-DC4, send DLE-ETX on ttyI%d\n", |
| 350 | info->line); |
| 351 | #endif |
| 352 | isdn_tty_at_cout("\020\003", info); |
| 353 | if (!info->vonline) { |
| 354 | #ifdef ISDN_DEBUG_MODEM_VOICE |
| 355 | printk(KERN_DEBUG |
| 356 | "DLEdown: send VCON on ttyI%d\n", |
| 357 | info->line); |
| 358 | #endif |
| 359 | isdn_tty_at_cout("\r\nVCON\r\n", info); |
| 360 | } |
| 361 | /* Fall through */ |
| 362 | case 'q': |
| 363 | case 's': |
| 364 | /* Silence */ |
| 365 | if (len > 1) |
| 366 | memmove(p, p + 1, len - 1); |
| 367 | p--; |
| 368 | break; |
| 369 | } |
| 370 | } else { |
| 371 | if (*p == DLE) |
| 372 | m->lastDLE = 1; |
| 373 | else |
| 374 | count++; |
| 375 | } |
| 376 | p++; |
| 377 | len--; |
| 378 | } |
| 379 | if (len < 0) { |
| 380 | printk(KERN_WARNING "isdn_tty: len<0 in DLEdown\n"); |
| 381 | return 0; |
| 382 | } |
| 383 | return count; |
| 384 | } |
| 385 | |
| 386 | /* This routine is called from within isdn_tty_write() when receiving |
| 387 | * audio-data. It interrupts receiving, if an character other than |
| 388 | * ^S or ^Q is sent. |
| 389 | */ |
| 390 | static int |
| 391 | isdn_tty_end_vrx(const char *buf, int c) |
| 392 | { |
| 393 | char ch; |
| 394 | |
| 395 | while (c--) { |
| 396 | ch = *buf; |
| 397 | if ((ch != 0x11) && (ch != 0x13)) |
| 398 | return 1; |
| 399 | buf++; |
| 400 | } |
| 401 | return 0; |
| 402 | } |
| 403 | |
| 404 | static int voice_cf[7] = |
| 405 | {0, 0, 4, 3, 2, 0, 0}; |
| 406 | |
| 407 | #endif /* CONFIG_ISDN_AUDIO */ |
| 408 | |
| 409 | /* isdn_tty_senddown() is called either directly from within isdn_tty_write() |
| 410 | * or via timer-interrupt from within isdn_tty_modem_xmit(). It pulls |
| 411 | * outgoing data from the tty's xmit-buffer, handles voice-decompression or |
| 412 | * T.70 if necessary, and finally queues it up for sending via isdn_tty_tint. |
| 413 | */ |
| 414 | static void |
| 415 | isdn_tty_senddown(modem_info * info) |
| 416 | { |
| 417 | int buflen; |
| 418 | int skb_res; |
| 419 | #ifdef CONFIG_ISDN_AUDIO |
| 420 | int audio_len; |
| 421 | #endif |
| 422 | struct sk_buff *skb; |
| 423 | |
| 424 | #ifdef CONFIG_ISDN_AUDIO |
| 425 | if (info->vonline & 4) { |
| 426 | info->vonline &= ~6; |
| 427 | if (!info->vonline) { |
| 428 | #ifdef ISDN_DEBUG_MODEM_VOICE |
| 429 | printk(KERN_DEBUG |
| 430 | "senddown: send VCON on ttyI%d\n", |
| 431 | info->line); |
| 432 | #endif |
| 433 | isdn_tty_at_cout("\r\nVCON\r\n", info); |
| 434 | } |
| 435 | } |
| 436 | #endif |
| 437 | if (!(buflen = info->xmit_count)) |
| 438 | return; |
| 439 | if ((info->emu.mdmreg[REG_CTS] & BIT_CTS) != 0) |
| 440 | info->msr &= ~UART_MSR_CTS; |
| 441 | info->lsr &= ~UART_LSR_TEMT; |
| 442 | /* info->xmit_count is modified here and in isdn_tty_write(). |
| 443 | * So we return here if isdn_tty_write() is in the |
| 444 | * critical section. |
| 445 | */ |
| 446 | atomic_inc(&info->xmit_lock); |
| 447 | if (!(atomic_dec_and_test(&info->xmit_lock))) |
| 448 | return; |
| 449 | if (info->isdn_driver < 0) { |
| 450 | info->xmit_count = 0; |
| 451 | return; |
| 452 | } |
| 453 | skb_res = dev->drv[info->isdn_driver]->interface->hl_hdrlen + 4; |
| 454 | #ifdef CONFIG_ISDN_AUDIO |
| 455 | if (info->vonline & 2) |
| 456 | audio_len = buflen * voice_cf[info->emu.vpar[3]]; |
| 457 | else |
| 458 | audio_len = 0; |
| 459 | skb = dev_alloc_skb(skb_res + buflen + audio_len); |
| 460 | #else |
| 461 | skb = dev_alloc_skb(skb_res + buflen); |
| 462 | #endif |
| 463 | if (!skb) { |
| 464 | printk(KERN_WARNING |
| 465 | "isdn_tty: Out of memory in ttyI%d senddown\n", |
| 466 | info->line); |
| 467 | return; |
| 468 | } |
| 469 | skb_reserve(skb, skb_res); |
| 470 | memcpy(skb_put(skb, buflen), info->xmit_buf, buflen); |
| 471 | info->xmit_count = 0; |
| 472 | #ifdef CONFIG_ISDN_AUDIO |
| 473 | if (info->vonline & 2) { |
| 474 | /* For now, ifmt is fixed to 1 (alaw), since this |
| 475 | * is used with ISDN everywhere in the world, except |
| 476 | * US, Canada and Japan. |
| 477 | * Later, when US-ISDN protocols are implemented, |
| 478 | * this setting will depend on the D-channel protocol. |
| 479 | */ |
| 480 | int ifmt = 1; |
| 481 | |
| 482 | /* voice conversion/decompression */ |
| 483 | switch (info->emu.vpar[3]) { |
| 484 | case 2: |
| 485 | case 3: |
| 486 | case 4: |
| 487 | /* adpcm, compatible to ZyXel 1496 modem |
| 488 | * with ROM revision 6.01 |
| 489 | */ |
| 490 | audio_len = isdn_audio_adpcm2xlaw(info->adpcms, |
| 491 | ifmt, |
| 492 | skb->data, |
| 493 | skb_put(skb, audio_len), |
| 494 | buflen); |
| 495 | skb_pull(skb, buflen); |
| 496 | skb_trim(skb, audio_len); |
| 497 | break; |
| 498 | case 5: |
| 499 | /* a-law */ |
| 500 | if (!ifmt) |
| 501 | isdn_audio_alaw2ulaw(skb->data, |
| 502 | buflen); |
| 503 | break; |
| 504 | case 6: |
| 505 | /* u-law */ |
| 506 | if (ifmt) |
| 507 | isdn_audio_ulaw2alaw(skb->data, |
| 508 | buflen); |
| 509 | break; |
| 510 | } |
| 511 | } |
| 512 | #endif /* CONFIG_ISDN_AUDIO */ |
| 513 | if (info->emu.mdmreg[REG_T70] & BIT_T70) { |
| 514 | /* Add T.70 simplified header */ |
| 515 | if (info->emu.mdmreg[REG_T70] & BIT_T70_EXT) |
| 516 | memcpy(skb_push(skb, 2), "\1\0", 2); |
| 517 | else |
| 518 | memcpy(skb_push(skb, 4), "\1\0\1\0", 4); |
| 519 | } |
| 520 | skb_queue_tail(&info->xmit_queue, skb); |
| 521 | } |
| 522 | |
| 523 | /************************************************************ |
| 524 | * |
| 525 | * Modem-functions |
| 526 | * |
| 527 | * mostly "stolen" from original Linux-serial.c and friends. |
| 528 | * |
| 529 | ************************************************************/ |
| 530 | |
| 531 | /* The next routine is called once from within timer-interrupt |
| 532 | * triggered within isdn_tty_modem_ncarrier(). It calls |
| 533 | * isdn_tty_modem_result() to stuff a "NO CARRIER" Message |
Alan Cox | 33f0f88 | 2006-01-09 20:54:13 -0800 | [diff] [blame] | 534 | * into the tty's buffer. |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 535 | */ |
| 536 | static void |
| 537 | isdn_tty_modem_do_ncarrier(unsigned long data) |
| 538 | { |
| 539 | modem_info *info = (modem_info *) data; |
| 540 | isdn_tty_modem_result(RESULT_NO_CARRIER, info); |
| 541 | } |
| 542 | |
| 543 | /* Next routine is called, whenever the DTR-signal is raised. |
| 544 | * It checks the ncarrier-flag, and triggers the above routine |
| 545 | * when necessary. The ncarrier-flag is set, whenever DTR goes |
| 546 | * low. |
| 547 | */ |
| 548 | static void |
| 549 | isdn_tty_modem_ncarrier(modem_info * info) |
| 550 | { |
| 551 | if (info->ncarrier) { |
| 552 | info->nc_timer.expires = jiffies + HZ; |
| 553 | add_timer(&info->nc_timer); |
| 554 | } |
| 555 | } |
| 556 | |
| 557 | /* |
| 558 | * return the usage calculated by si and layer 2 protocol |
| 559 | */ |
Adrian Bunk | 3e206b0 | 2005-06-25 14:58:35 -0700 | [diff] [blame] | 560 | static int |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 561 | isdn_calc_usage(int si, int l2) |
| 562 | { |
| 563 | int usg = ISDN_USAGE_MODEM; |
| 564 | |
| 565 | #ifdef CONFIG_ISDN_AUDIO |
| 566 | if (si == 1) { |
| 567 | switch(l2) { |
| 568 | case ISDN_PROTO_L2_MODEM: |
| 569 | usg = ISDN_USAGE_MODEM; |
| 570 | break; |
| 571 | #ifdef CONFIG_ISDN_TTY_FAX |
| 572 | case ISDN_PROTO_L2_FAX: |
| 573 | usg = ISDN_USAGE_FAX; |
| 574 | break; |
| 575 | #endif |
| 576 | case ISDN_PROTO_L2_TRANS: |
| 577 | default: |
| 578 | usg = ISDN_USAGE_VOICE; |
| 579 | break; |
| 580 | } |
| 581 | } |
| 582 | #endif |
| 583 | return(usg); |
| 584 | } |
| 585 | |
| 586 | /* isdn_tty_dial() performs dialing of a tty an the necessary |
| 587 | * setup of the lower levels before that. |
| 588 | */ |
| 589 | static void |
| 590 | isdn_tty_dial(char *n, modem_info * info, atemu * m) |
| 591 | { |
| 592 | int usg = ISDN_USAGE_MODEM; |
| 593 | int si = 7; |
| 594 | int l2 = m->mdmreg[REG_L2PROT]; |
| 595 | u_long flags; |
| 596 | isdn_ctrl cmd; |
| 597 | int i; |
| 598 | int j; |
| 599 | |
| 600 | for (j = 7; j >= 0; j--) |
| 601 | if (m->mdmreg[REG_SI1] & (1 << j)) { |
| 602 | si = bit2si[j]; |
| 603 | break; |
| 604 | } |
| 605 | usg = isdn_calc_usage(si, l2); |
| 606 | #ifdef CONFIG_ISDN_AUDIO |
| 607 | if ((si == 1) && |
| 608 | (l2 != ISDN_PROTO_L2_MODEM) |
| 609 | #ifdef CONFIG_ISDN_TTY_FAX |
| 610 | && (l2 != ISDN_PROTO_L2_FAX) |
| 611 | #endif |
| 612 | ) { |
| 613 | l2 = ISDN_PROTO_L2_TRANS; |
| 614 | usg = ISDN_USAGE_VOICE; |
| 615 | } |
| 616 | #endif |
| 617 | m->mdmreg[REG_SI1I] = si2bit[si]; |
| 618 | spin_lock_irqsave(&dev->lock, flags); |
| 619 | i = isdn_get_free_channel(usg, l2, m->mdmreg[REG_L3PROT], -1, -1, m->msn); |
| 620 | if (i < 0) { |
| 621 | spin_unlock_irqrestore(&dev->lock, flags); |
| 622 | isdn_tty_modem_result(RESULT_NO_DIALTONE, info); |
| 623 | } else { |
| 624 | info->isdn_driver = dev->drvmap[i]; |
| 625 | info->isdn_channel = dev->chanmap[i]; |
| 626 | info->drv_index = i; |
| 627 | dev->m_idx[i] = info->line; |
| 628 | dev->usage[i] |= ISDN_USAGE_OUTGOING; |
| 629 | info->last_dir = 1; |
| 630 | strcpy(info->last_num, n); |
| 631 | isdn_info_update(); |
| 632 | spin_unlock_irqrestore(&dev->lock, flags); |
| 633 | cmd.driver = info->isdn_driver; |
| 634 | cmd.arg = info->isdn_channel; |
| 635 | cmd.command = ISDN_CMD_CLREAZ; |
| 636 | isdn_command(&cmd); |
| 637 | strcpy(cmd.parm.num, isdn_map_eaz2msn(m->msn, info->isdn_driver)); |
| 638 | cmd.driver = info->isdn_driver; |
| 639 | cmd.command = ISDN_CMD_SETEAZ; |
| 640 | isdn_command(&cmd); |
| 641 | cmd.driver = info->isdn_driver; |
| 642 | cmd.command = ISDN_CMD_SETL2; |
| 643 | info->last_l2 = l2; |
| 644 | cmd.arg = info->isdn_channel + (l2 << 8); |
| 645 | isdn_command(&cmd); |
| 646 | cmd.driver = info->isdn_driver; |
| 647 | cmd.command = ISDN_CMD_SETL3; |
| 648 | cmd.arg = info->isdn_channel + (m->mdmreg[REG_L3PROT] << 8); |
| 649 | #ifdef CONFIG_ISDN_TTY_FAX |
| 650 | if (l2 == ISDN_PROTO_L2_FAX) { |
| 651 | cmd.parm.fax = info->fax; |
| 652 | info->fax->direction = ISDN_TTY_FAX_CONN_OUT; |
| 653 | } |
| 654 | #endif |
| 655 | isdn_command(&cmd); |
| 656 | cmd.driver = info->isdn_driver; |
| 657 | cmd.arg = info->isdn_channel; |
| 658 | sprintf(cmd.parm.setup.phone, "%s", n); |
| 659 | sprintf(cmd.parm.setup.eazmsn, "%s", |
| 660 | isdn_map_eaz2msn(m->msn, info->isdn_driver)); |
| 661 | cmd.parm.setup.si1 = si; |
| 662 | cmd.parm.setup.si2 = m->mdmreg[REG_SI2]; |
| 663 | cmd.command = ISDN_CMD_DIAL; |
| 664 | info->dialing = 1; |
| 665 | info->emu.carrierwait = 0; |
| 666 | strcpy(dev->num[i], n); |
| 667 | isdn_info_update(); |
| 668 | isdn_command(&cmd); |
| 669 | isdn_timer_ctrl(ISDN_TIMER_CARRIER, 1); |
| 670 | } |
| 671 | } |
| 672 | |
| 673 | /* isdn_tty_hangup() disassociates a tty from the real |
| 674 | * ISDN-line (hangup). The usage-status is cleared |
| 675 | * and some cleanup is done also. |
| 676 | */ |
| 677 | void |
| 678 | isdn_tty_modem_hup(modem_info * info, int local) |
| 679 | { |
| 680 | isdn_ctrl cmd; |
| 681 | int di, ch; |
| 682 | |
| 683 | if (!info) |
| 684 | return; |
| 685 | |
| 686 | di = info->isdn_driver; |
| 687 | ch = info->isdn_channel; |
| 688 | if (di < 0 || ch < 0) |
| 689 | return; |
| 690 | |
| 691 | info->isdn_driver = -1; |
| 692 | info->isdn_channel = -1; |
| 693 | |
| 694 | #ifdef ISDN_DEBUG_MODEM_HUP |
| 695 | printk(KERN_DEBUG "Mhup ttyI%d\n", info->line); |
| 696 | #endif |
| 697 | info->rcvsched = 0; |
| 698 | isdn_tty_flush_buffer(info->tty); |
| 699 | if (info->online) { |
| 700 | info->last_lhup = local; |
| 701 | info->online = 0; |
| 702 | isdn_tty_modem_result(RESULT_NO_CARRIER, info); |
| 703 | } |
| 704 | #ifdef CONFIG_ISDN_AUDIO |
| 705 | info->vonline = 0; |
| 706 | #ifdef CONFIG_ISDN_TTY_FAX |
| 707 | info->faxonline = 0; |
| 708 | info->fax->phase = ISDN_FAX_PHASE_IDLE; |
| 709 | #endif |
| 710 | info->emu.vpar[4] = 0; |
| 711 | info->emu.vpar[5] = 8; |
Jesper Juhl | 3c7208f | 2005-11-07 01:01:29 -0800 | [diff] [blame] | 712 | kfree(info->dtmf_state); |
| 713 | info->dtmf_state = NULL; |
| 714 | kfree(info->silence_state); |
| 715 | info->silence_state = NULL; |
| 716 | kfree(info->adpcms); |
| 717 | info->adpcms = NULL; |
| 718 | kfree(info->adpcmr); |
| 719 | info->adpcmr = NULL; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 720 | #endif |
| 721 | if ((info->msr & UART_MSR_RI) && |
| 722 | (info->emu.mdmreg[REG_RUNG] & BIT_RUNG)) |
| 723 | isdn_tty_modem_result(RESULT_RUNG, info); |
| 724 | info->msr &= ~(UART_MSR_DCD | UART_MSR_RI); |
| 725 | info->lsr |= UART_LSR_TEMT; |
| 726 | |
| 727 | if (local) { |
| 728 | cmd.driver = di; |
| 729 | cmd.command = ISDN_CMD_HANGUP; |
| 730 | cmd.arg = ch; |
| 731 | isdn_command(&cmd); |
| 732 | } |
| 733 | |
| 734 | isdn_all_eaz(di, ch); |
| 735 | info->emu.mdmreg[REG_RINGCNT] = 0; |
| 736 | isdn_free_channel(di, ch, 0); |
| 737 | |
| 738 | if (info->drv_index >= 0) { |
| 739 | dev->m_idx[info->drv_index] = -1; |
| 740 | info->drv_index = -1; |
| 741 | } |
| 742 | } |
| 743 | |
| 744 | /* |
| 745 | * Begin of a CAPI like interface, currently used only for |
| 746 | * supplementary service (CAPI 2.0 part III) |
| 747 | */ |
| 748 | #include <linux/isdn/capicmd.h> |
| 749 | |
| 750 | int |
| 751 | isdn_tty_capi_facility(capi_msg *cm) { |
| 752 | return(-1); /* dummy */ |
| 753 | } |
| 754 | |
| 755 | /* isdn_tty_suspend() tries to suspend the current tty connection |
| 756 | */ |
| 757 | static void |
| 758 | isdn_tty_suspend(char *id, modem_info * info, atemu * m) |
| 759 | { |
| 760 | isdn_ctrl cmd; |
| 761 | |
| 762 | int l; |
| 763 | |
| 764 | if (!info) |
| 765 | return; |
| 766 | |
| 767 | #ifdef ISDN_DEBUG_MODEM_SERVICES |
| 768 | printk(KERN_DEBUG "Msusp ttyI%d\n", info->line); |
| 769 | #endif |
| 770 | l = strlen(id); |
| 771 | if ((info->isdn_driver >= 0)) { |
| 772 | cmd.parm.cmsg.Length = l+18; |
| 773 | cmd.parm.cmsg.Command = CAPI_FACILITY; |
| 774 | cmd.parm.cmsg.Subcommand = CAPI_REQ; |
| 775 | cmd.parm.cmsg.adr.Controller = info->isdn_driver + 1; |
| 776 | cmd.parm.cmsg.para[0] = 3; /* 16 bit 0x0003 suplementary service */ |
| 777 | cmd.parm.cmsg.para[1] = 0; |
| 778 | cmd.parm.cmsg.para[2] = l + 3; |
| 779 | cmd.parm.cmsg.para[3] = 4; /* 16 bit 0x0004 Suspend */ |
| 780 | cmd.parm.cmsg.para[4] = 0; |
| 781 | cmd.parm.cmsg.para[5] = l; |
| 782 | strncpy(&cmd.parm.cmsg.para[6], id, l); |
| 783 | cmd.command = CAPI_PUT_MESSAGE; |
| 784 | cmd.driver = info->isdn_driver; |
| 785 | cmd.arg = info->isdn_channel; |
| 786 | isdn_command(&cmd); |
| 787 | } |
| 788 | } |
| 789 | |
| 790 | /* isdn_tty_resume() tries to resume a suspended call |
| 791 | * setup of the lower levels before that. unfortunatly here is no |
| 792 | * checking for compatibility of used protocols implemented by Q931 |
| 793 | * It does the same things like isdn_tty_dial, the last command |
| 794 | * is different, may be we can merge it. |
| 795 | */ |
| 796 | |
| 797 | static void |
| 798 | isdn_tty_resume(char *id, modem_info * info, atemu * m) |
| 799 | { |
| 800 | int usg = ISDN_USAGE_MODEM; |
| 801 | int si = 7; |
| 802 | int l2 = m->mdmreg[REG_L2PROT]; |
| 803 | isdn_ctrl cmd; |
| 804 | ulong flags; |
| 805 | int i; |
| 806 | int j; |
| 807 | int l; |
| 808 | |
| 809 | l = strlen(id); |
| 810 | for (j = 7; j >= 0; j--) |
| 811 | if (m->mdmreg[REG_SI1] & (1 << j)) { |
| 812 | si = bit2si[j]; |
| 813 | break; |
| 814 | } |
| 815 | usg = isdn_calc_usage(si, l2); |
| 816 | #ifdef CONFIG_ISDN_AUDIO |
| 817 | if ((si == 1) && |
| 818 | (l2 != ISDN_PROTO_L2_MODEM) |
| 819 | #ifdef CONFIG_ISDN_TTY_FAX |
| 820 | && (l2 != ISDN_PROTO_L2_FAX) |
| 821 | #endif |
| 822 | ) { |
| 823 | l2 = ISDN_PROTO_L2_TRANS; |
| 824 | usg = ISDN_USAGE_VOICE; |
| 825 | } |
| 826 | #endif |
| 827 | m->mdmreg[REG_SI1I] = si2bit[si]; |
| 828 | spin_lock_irqsave(&dev->lock, flags); |
| 829 | i = isdn_get_free_channel(usg, l2, m->mdmreg[REG_L3PROT], -1, -1, m->msn); |
| 830 | if (i < 0) { |
| 831 | spin_unlock_irqrestore(&dev->lock, flags); |
| 832 | isdn_tty_modem_result(RESULT_NO_DIALTONE, info); |
| 833 | } else { |
| 834 | info->isdn_driver = dev->drvmap[i]; |
| 835 | info->isdn_channel = dev->chanmap[i]; |
| 836 | info->drv_index = i; |
| 837 | dev->m_idx[i] = info->line; |
| 838 | dev->usage[i] |= ISDN_USAGE_OUTGOING; |
| 839 | info->last_dir = 1; |
| 840 | // strcpy(info->last_num, n); |
| 841 | isdn_info_update(); |
| 842 | spin_unlock_irqrestore(&dev->lock, flags); |
| 843 | cmd.driver = info->isdn_driver; |
| 844 | cmd.arg = info->isdn_channel; |
| 845 | cmd.command = ISDN_CMD_CLREAZ; |
| 846 | isdn_command(&cmd); |
| 847 | strcpy(cmd.parm.num, isdn_map_eaz2msn(m->msn, info->isdn_driver)); |
| 848 | cmd.driver = info->isdn_driver; |
| 849 | cmd.command = ISDN_CMD_SETEAZ; |
| 850 | isdn_command(&cmd); |
| 851 | cmd.driver = info->isdn_driver; |
| 852 | cmd.command = ISDN_CMD_SETL2; |
| 853 | info->last_l2 = l2; |
| 854 | cmd.arg = info->isdn_channel + (l2 << 8); |
| 855 | isdn_command(&cmd); |
| 856 | cmd.driver = info->isdn_driver; |
| 857 | cmd.command = ISDN_CMD_SETL3; |
| 858 | cmd.arg = info->isdn_channel + (m->mdmreg[REG_L3PROT] << 8); |
| 859 | isdn_command(&cmd); |
| 860 | cmd.driver = info->isdn_driver; |
| 861 | cmd.arg = info->isdn_channel; |
| 862 | cmd.parm.cmsg.Length = l+18; |
| 863 | cmd.parm.cmsg.Command = CAPI_FACILITY; |
| 864 | cmd.parm.cmsg.Subcommand = CAPI_REQ; |
| 865 | cmd.parm.cmsg.adr.Controller = info->isdn_driver + 1; |
| 866 | cmd.parm.cmsg.para[0] = 3; /* 16 bit 0x0003 suplementary service */ |
| 867 | cmd.parm.cmsg.para[1] = 0; |
| 868 | cmd.parm.cmsg.para[2] = l+3; |
| 869 | cmd.parm.cmsg.para[3] = 5; /* 16 bit 0x0005 Resume */ |
| 870 | cmd.parm.cmsg.para[4] = 0; |
| 871 | cmd.parm.cmsg.para[5] = l; |
| 872 | strncpy(&cmd.parm.cmsg.para[6], id, l); |
| 873 | cmd.command =CAPI_PUT_MESSAGE; |
| 874 | info->dialing = 1; |
| 875 | // strcpy(dev->num[i], n); |
| 876 | isdn_info_update(); |
| 877 | isdn_command(&cmd); |
| 878 | isdn_timer_ctrl(ISDN_TIMER_CARRIER, 1); |
| 879 | } |
| 880 | } |
| 881 | |
| 882 | /* isdn_tty_send_msg() sends a message to a HL driver |
| 883 | * This is used for hybrid modem cards to send AT commands to it |
| 884 | */ |
| 885 | |
| 886 | static void |
| 887 | isdn_tty_send_msg(modem_info * info, atemu * m, char *msg) |
| 888 | { |
| 889 | int usg = ISDN_USAGE_MODEM; |
| 890 | int si = 7; |
| 891 | int l2 = m->mdmreg[REG_L2PROT]; |
| 892 | isdn_ctrl cmd; |
| 893 | ulong flags; |
| 894 | int i; |
| 895 | int j; |
| 896 | int l; |
| 897 | |
| 898 | l = strlen(msg); |
| 899 | if (!l) { |
| 900 | isdn_tty_modem_result(RESULT_ERROR, info); |
| 901 | return; |
| 902 | } |
| 903 | for (j = 7; j >= 0; j--) |
| 904 | if (m->mdmreg[REG_SI1] & (1 << j)) { |
| 905 | si = bit2si[j]; |
| 906 | break; |
| 907 | } |
| 908 | usg = isdn_calc_usage(si, l2); |
| 909 | #ifdef CONFIG_ISDN_AUDIO |
| 910 | if ((si == 1) && |
| 911 | (l2 != ISDN_PROTO_L2_MODEM) |
| 912 | #ifdef CONFIG_ISDN_TTY_FAX |
| 913 | && (l2 != ISDN_PROTO_L2_FAX) |
| 914 | #endif |
| 915 | ) { |
| 916 | l2 = ISDN_PROTO_L2_TRANS; |
| 917 | usg = ISDN_USAGE_VOICE; |
| 918 | } |
| 919 | #endif |
| 920 | m->mdmreg[REG_SI1I] = si2bit[si]; |
| 921 | spin_lock_irqsave(&dev->lock, flags); |
| 922 | i = isdn_get_free_channel(usg, l2, m->mdmreg[REG_L3PROT], -1, -1, m->msn); |
| 923 | if (i < 0) { |
| 924 | spin_unlock_irqrestore(&dev->lock, flags); |
| 925 | isdn_tty_modem_result(RESULT_NO_DIALTONE, info); |
| 926 | } else { |
| 927 | info->isdn_driver = dev->drvmap[i]; |
| 928 | info->isdn_channel = dev->chanmap[i]; |
| 929 | info->drv_index = i; |
| 930 | dev->m_idx[i] = info->line; |
| 931 | dev->usage[i] |= ISDN_USAGE_OUTGOING; |
| 932 | info->last_dir = 1; |
| 933 | isdn_info_update(); |
| 934 | spin_unlock_irqrestore(&dev->lock, flags); |
| 935 | cmd.driver = info->isdn_driver; |
| 936 | cmd.arg = info->isdn_channel; |
| 937 | cmd.command = ISDN_CMD_CLREAZ; |
| 938 | isdn_command(&cmd); |
| 939 | strcpy(cmd.parm.num, isdn_map_eaz2msn(m->msn, info->isdn_driver)); |
| 940 | cmd.driver = info->isdn_driver; |
| 941 | cmd.command = ISDN_CMD_SETEAZ; |
| 942 | isdn_command(&cmd); |
| 943 | cmd.driver = info->isdn_driver; |
| 944 | cmd.command = ISDN_CMD_SETL2; |
| 945 | info->last_l2 = l2; |
| 946 | cmd.arg = info->isdn_channel + (l2 << 8); |
| 947 | isdn_command(&cmd); |
| 948 | cmd.driver = info->isdn_driver; |
| 949 | cmd.command = ISDN_CMD_SETL3; |
| 950 | cmd.arg = info->isdn_channel + (m->mdmreg[REG_L3PROT] << 8); |
| 951 | isdn_command(&cmd); |
| 952 | cmd.driver = info->isdn_driver; |
| 953 | cmd.arg = info->isdn_channel; |
| 954 | cmd.parm.cmsg.Length = l+14; |
| 955 | cmd.parm.cmsg.Command = CAPI_MANUFACTURER; |
| 956 | cmd.parm.cmsg.Subcommand = CAPI_REQ; |
| 957 | cmd.parm.cmsg.adr.Controller = info->isdn_driver + 1; |
| 958 | cmd.parm.cmsg.para[0] = l+1; |
| 959 | strncpy(&cmd.parm.cmsg.para[1], msg, l); |
| 960 | cmd.parm.cmsg.para[l+1] = 0xd; |
| 961 | cmd.command =CAPI_PUT_MESSAGE; |
| 962 | /* info->dialing = 1; |
| 963 | strcpy(dev->num[i], n); |
| 964 | isdn_info_update(); |
| 965 | */ |
| 966 | isdn_command(&cmd); |
| 967 | } |
| 968 | } |
| 969 | |
| 970 | static inline int |
| 971 | isdn_tty_paranoia_check(modem_info *info, char *name, const char *routine) |
| 972 | { |
| 973 | #ifdef MODEM_PARANOIA_CHECK |
| 974 | if (!info) { |
| 975 | printk(KERN_WARNING "isdn_tty: null info_struct for %s in %s\n", |
| 976 | name, routine); |
| 977 | return 1; |
| 978 | } |
| 979 | if (info->magic != ISDN_ASYNC_MAGIC) { |
| 980 | printk(KERN_WARNING "isdn_tty: bad magic for modem struct %s in %s\n", |
| 981 | name, routine); |
| 982 | return 1; |
| 983 | } |
| 984 | #endif |
| 985 | return 0; |
| 986 | } |
| 987 | |
| 988 | /* |
| 989 | * This routine is called to set the UART divisor registers to match |
| 990 | * the specified baud rate for a serial port. |
| 991 | */ |
| 992 | static void |
| 993 | isdn_tty_change_speed(modem_info * info) |
| 994 | { |
| 995 | uint cflag, |
| 996 | cval, |
| 997 | fcr, |
| 998 | quot; |
| 999 | int i; |
| 1000 | |
| 1001 | if (!info->tty || !info->tty->termios) |
| 1002 | return; |
| 1003 | cflag = info->tty->termios->c_cflag; |
| 1004 | |
| 1005 | quot = i = cflag & CBAUD; |
| 1006 | if (i & CBAUDEX) { |
| 1007 | i &= ~CBAUDEX; |
| 1008 | if (i < 1 || i > 2) |
| 1009 | info->tty->termios->c_cflag &= ~CBAUDEX; |
| 1010 | else |
| 1011 | i += 15; |
| 1012 | } |
| 1013 | if (quot) { |
| 1014 | info->mcr |= UART_MCR_DTR; |
| 1015 | isdn_tty_modem_ncarrier(info); |
| 1016 | } else { |
| 1017 | info->mcr &= ~UART_MCR_DTR; |
| 1018 | if (info->emu.mdmreg[REG_DTRHUP] & BIT_DTRHUP) { |
| 1019 | #ifdef ISDN_DEBUG_MODEM_HUP |
| 1020 | printk(KERN_DEBUG "Mhup in changespeed\n"); |
| 1021 | #endif |
| 1022 | if (info->online) |
| 1023 | info->ncarrier = 1; |
| 1024 | isdn_tty_modem_reset_regs(info, 0); |
| 1025 | isdn_tty_modem_hup(info, 1); |
| 1026 | } |
| 1027 | return; |
| 1028 | } |
| 1029 | /* byte size and parity */ |
| 1030 | cval = cflag & (CSIZE | CSTOPB); |
| 1031 | cval >>= 4; |
| 1032 | if (cflag & PARENB) |
| 1033 | cval |= UART_LCR_PARITY; |
| 1034 | if (!(cflag & PARODD)) |
| 1035 | cval |= UART_LCR_EPAR; |
| 1036 | fcr = 0; |
| 1037 | |
| 1038 | /* CTS flow control flag and modem status interrupts */ |
| 1039 | if (cflag & CRTSCTS) { |
| 1040 | info->flags |= ISDN_ASYNC_CTS_FLOW; |
| 1041 | } else |
| 1042 | info->flags &= ~ISDN_ASYNC_CTS_FLOW; |
| 1043 | if (cflag & CLOCAL) |
| 1044 | info->flags &= ~ISDN_ASYNC_CHECK_CD; |
| 1045 | else { |
| 1046 | info->flags |= ISDN_ASYNC_CHECK_CD; |
| 1047 | } |
| 1048 | } |
| 1049 | |
| 1050 | static int |
| 1051 | isdn_tty_startup(modem_info * info) |
| 1052 | { |
| 1053 | if (info->flags & ISDN_ASYNC_INITIALIZED) |
| 1054 | return 0; |
| 1055 | isdn_lock_drivers(); |
| 1056 | #ifdef ISDN_DEBUG_MODEM_OPEN |
| 1057 | printk(KERN_DEBUG "starting up ttyi%d ...\n", info->line); |
| 1058 | #endif |
| 1059 | /* |
| 1060 | * Now, initialize the UART |
| 1061 | */ |
| 1062 | info->mcr = UART_MCR_DTR | UART_MCR_RTS | UART_MCR_OUT2; |
| 1063 | if (info->tty) |
| 1064 | clear_bit(TTY_IO_ERROR, &info->tty->flags); |
| 1065 | /* |
| 1066 | * and set the speed of the serial port |
| 1067 | */ |
| 1068 | isdn_tty_change_speed(info); |
| 1069 | |
| 1070 | info->flags |= ISDN_ASYNC_INITIALIZED; |
| 1071 | info->msr |= (UART_MSR_DSR | UART_MSR_CTS); |
| 1072 | info->send_outstanding = 0; |
| 1073 | return 0; |
| 1074 | } |
| 1075 | |
| 1076 | /* |
| 1077 | * This routine will shutdown a serial port; interrupts are disabled, and |
| 1078 | * DTR is dropped if the hangup on close termio flag is on. |
| 1079 | */ |
| 1080 | static void |
| 1081 | isdn_tty_shutdown(modem_info * info) |
| 1082 | { |
| 1083 | if (!(info->flags & ISDN_ASYNC_INITIALIZED)) |
| 1084 | return; |
| 1085 | #ifdef ISDN_DEBUG_MODEM_OPEN |
| 1086 | printk(KERN_DEBUG "Shutting down isdnmodem port %d ....\n", info->line); |
| 1087 | #endif |
| 1088 | isdn_unlock_drivers(); |
| 1089 | info->msr &= ~UART_MSR_RI; |
| 1090 | if (!info->tty || (info->tty->termios->c_cflag & HUPCL)) { |
| 1091 | info->mcr &= ~(UART_MCR_DTR | UART_MCR_RTS); |
| 1092 | if (info->emu.mdmreg[REG_DTRHUP] & BIT_DTRHUP) { |
| 1093 | isdn_tty_modem_reset_regs(info, 0); |
| 1094 | #ifdef ISDN_DEBUG_MODEM_HUP |
| 1095 | printk(KERN_DEBUG "Mhup in isdn_tty_shutdown\n"); |
| 1096 | #endif |
| 1097 | isdn_tty_modem_hup(info, 1); |
| 1098 | } |
| 1099 | } |
| 1100 | if (info->tty) |
| 1101 | set_bit(TTY_IO_ERROR, &info->tty->flags); |
| 1102 | |
| 1103 | info->flags &= ~ISDN_ASYNC_INITIALIZED; |
| 1104 | } |
| 1105 | |
| 1106 | /* isdn_tty_write() is the main send-routine. It is called from the upper |
| 1107 | * levels within the kernel to perform sending data. Depending on the |
| 1108 | * online-flag it either directs output to the at-command-interpreter or |
| 1109 | * to the lower level. Additional tasks done here: |
| 1110 | * - If online, check for escape-sequence (+++) |
| 1111 | * - If sending audio-data, call isdn_tty_DLEdown() to parse DLE-codes. |
| 1112 | * - If receiving audio-data, call isdn_tty_end_vrx() to abort if needed. |
| 1113 | * - If dialing, abort dial. |
| 1114 | */ |
| 1115 | static int |
| 1116 | isdn_tty_write(struct tty_struct *tty, const u_char * buf, int count) |
| 1117 | { |
| 1118 | int c; |
| 1119 | int total = 0; |
| 1120 | modem_info *info = (modem_info *) tty->driver_data; |
| 1121 | atemu *m = &info->emu; |
| 1122 | |
| 1123 | if (isdn_tty_paranoia_check(info, tty->name, "isdn_tty_write")) |
| 1124 | return 0; |
| 1125 | /* See isdn_tty_senddown() */ |
| 1126 | atomic_inc(&info->xmit_lock); |
| 1127 | while (1) { |
| 1128 | c = count; |
| 1129 | if (c > info->xmit_size - info->xmit_count) |
| 1130 | c = info->xmit_size - info->xmit_count; |
| 1131 | if (info->isdn_driver >= 0 && c > dev->drv[info->isdn_driver]->maxbufsize) |
| 1132 | c = dev->drv[info->isdn_driver]->maxbufsize; |
| 1133 | if (c <= 0) |
| 1134 | break; |
| 1135 | if ((info->online > 1) |
| 1136 | #ifdef CONFIG_ISDN_AUDIO |
| 1137 | || (info->vonline & 3) |
| 1138 | #endif |
| 1139 | ) { |
| 1140 | #ifdef CONFIG_ISDN_AUDIO |
| 1141 | if (!info->vonline) |
| 1142 | #endif |
| 1143 | isdn_tty_check_esc(buf, m->mdmreg[REG_ESC], c, |
| 1144 | &(m->pluscount), |
| 1145 | &(m->lastplus)); |
| 1146 | memcpy(&(info->xmit_buf[info->xmit_count]), buf, c); |
| 1147 | #ifdef CONFIG_ISDN_AUDIO |
| 1148 | if (info->vonline) { |
| 1149 | int cc = isdn_tty_handleDLEdown(info, m, c); |
| 1150 | if (info->vonline & 2) { |
| 1151 | if (!cc) { |
| 1152 | /* If DLE decoding results in zero-transmit, but |
| 1153 | * c originally was non-zero, do a wakeup. |
| 1154 | */ |
| 1155 | tty_wakeup(tty); |
| 1156 | info->msr |= UART_MSR_CTS; |
| 1157 | info->lsr |= UART_LSR_TEMT; |
| 1158 | } |
| 1159 | info->xmit_count += cc; |
| 1160 | } |
| 1161 | if ((info->vonline & 3) == 1) { |
| 1162 | /* Do NOT handle Ctrl-Q or Ctrl-S |
| 1163 | * when in full-duplex audio mode. |
| 1164 | */ |
| 1165 | if (isdn_tty_end_vrx(buf, c)) { |
| 1166 | info->vonline &= ~1; |
| 1167 | #ifdef ISDN_DEBUG_MODEM_VOICE |
| 1168 | printk(KERN_DEBUG |
| 1169 | "got !^Q/^S, send DLE-ETX,VCON on ttyI%d\n", |
| 1170 | info->line); |
| 1171 | #endif |
| 1172 | isdn_tty_at_cout("\020\003\r\nVCON\r\n", info); |
| 1173 | } |
| 1174 | } |
| 1175 | } else |
| 1176 | if (TTY_IS_FCLASS1(info)) { |
| 1177 | int cc = isdn_tty_handleDLEdown(info, m, c); |
| 1178 | |
| 1179 | if (info->vonline & 4) { /* ETX seen */ |
| 1180 | isdn_ctrl c; |
| 1181 | |
| 1182 | c.command = ISDN_CMD_FAXCMD; |
| 1183 | c.driver = info->isdn_driver; |
| 1184 | c.arg = info->isdn_channel; |
| 1185 | c.parm.aux.cmd = ISDN_FAX_CLASS1_CTRL; |
| 1186 | c.parm.aux.subcmd = ETX; |
| 1187 | isdn_command(&c); |
| 1188 | } |
| 1189 | info->vonline = 0; |
| 1190 | #ifdef ISDN_DEBUG_MODEM_VOICE |
| 1191 | printk(KERN_DEBUG "fax dle cc/c %d/%d\n", cc, c); |
| 1192 | #endif |
| 1193 | info->xmit_count += cc; |
| 1194 | } else |
| 1195 | #endif |
| 1196 | info->xmit_count += c; |
| 1197 | } else { |
| 1198 | info->msr |= UART_MSR_CTS; |
| 1199 | info->lsr |= UART_LSR_TEMT; |
| 1200 | if (info->dialing) { |
| 1201 | info->dialing = 0; |
| 1202 | #ifdef ISDN_DEBUG_MODEM_HUP |
| 1203 | printk(KERN_DEBUG "Mhup in isdn_tty_write\n"); |
| 1204 | #endif |
| 1205 | isdn_tty_modem_result(RESULT_NO_CARRIER, info); |
| 1206 | isdn_tty_modem_hup(info, 1); |
| 1207 | } else |
| 1208 | c = isdn_tty_edit_at(buf, c, info); |
| 1209 | } |
| 1210 | buf += c; |
| 1211 | count -= c; |
| 1212 | total += c; |
| 1213 | } |
| 1214 | atomic_dec(&info->xmit_lock); |
David S. Miller | b03efcf | 2005-07-08 14:57:23 -0700 | [diff] [blame] | 1215 | if ((info->xmit_count) || !skb_queue_empty(&info->xmit_queue)) { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1216 | if (m->mdmreg[REG_DXMT] & BIT_DXMT) { |
| 1217 | isdn_tty_senddown(info); |
| 1218 | isdn_tty_tint(info); |
| 1219 | } |
| 1220 | isdn_timer_ctrl(ISDN_TIMER_MODEMXMIT, 1); |
| 1221 | } |
| 1222 | return total; |
| 1223 | } |
| 1224 | |
| 1225 | static int |
| 1226 | isdn_tty_write_room(struct tty_struct *tty) |
| 1227 | { |
| 1228 | modem_info *info = (modem_info *) tty->driver_data; |
| 1229 | int ret; |
| 1230 | |
| 1231 | if (isdn_tty_paranoia_check(info, tty->name, "isdn_tty_write_room")) |
| 1232 | return 0; |
| 1233 | if (!info->online) |
| 1234 | return info->xmit_size; |
| 1235 | ret = info->xmit_size - info->xmit_count; |
| 1236 | return (ret < 0) ? 0 : ret; |
| 1237 | } |
| 1238 | |
| 1239 | static int |
| 1240 | isdn_tty_chars_in_buffer(struct tty_struct *tty) |
| 1241 | { |
| 1242 | modem_info *info = (modem_info *) tty->driver_data; |
| 1243 | |
| 1244 | if (isdn_tty_paranoia_check(info, tty->name, "isdn_tty_chars_in_buffer")) |
| 1245 | return 0; |
| 1246 | if (!info->online) |
| 1247 | return 0; |
| 1248 | return (info->xmit_count); |
| 1249 | } |
| 1250 | |
| 1251 | static void |
| 1252 | isdn_tty_flush_buffer(struct tty_struct *tty) |
| 1253 | { |
| 1254 | modem_info *info; |
| 1255 | |
| 1256 | if (!tty) { |
| 1257 | return; |
| 1258 | } |
| 1259 | info = (modem_info *) tty->driver_data; |
| 1260 | if (isdn_tty_paranoia_check(info, tty->name, "isdn_tty_flush_buffer")) { |
| 1261 | return; |
| 1262 | } |
| 1263 | isdn_tty_cleanup_xmit(info); |
| 1264 | info->xmit_count = 0; |
| 1265 | wake_up_interruptible(&tty->write_wait); |
| 1266 | tty_wakeup(tty); |
| 1267 | } |
| 1268 | |
| 1269 | static void |
| 1270 | isdn_tty_flush_chars(struct tty_struct *tty) |
| 1271 | { |
| 1272 | modem_info *info = (modem_info *) tty->driver_data; |
| 1273 | |
| 1274 | if (isdn_tty_paranoia_check(info, tty->name, "isdn_tty_flush_chars")) |
| 1275 | return; |
David S. Miller | b03efcf | 2005-07-08 14:57:23 -0700 | [diff] [blame] | 1276 | if ((info->xmit_count) || !skb_queue_empty(&info->xmit_queue)) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1277 | isdn_timer_ctrl(ISDN_TIMER_MODEMXMIT, 1); |
| 1278 | } |
| 1279 | |
| 1280 | /* |
| 1281 | * ------------------------------------------------------------ |
| 1282 | * isdn_tty_throttle() |
| 1283 | * |
| 1284 | * This routine is called by the upper-layer tty layer to signal that |
| 1285 | * incoming characters should be throttled. |
| 1286 | * ------------------------------------------------------------ |
| 1287 | */ |
| 1288 | static void |
| 1289 | isdn_tty_throttle(struct tty_struct *tty) |
| 1290 | { |
| 1291 | modem_info *info = (modem_info *) tty->driver_data; |
| 1292 | |
| 1293 | if (isdn_tty_paranoia_check(info, tty->name, "isdn_tty_throttle")) |
| 1294 | return; |
| 1295 | if (I_IXOFF(tty)) |
| 1296 | info->x_char = STOP_CHAR(tty); |
| 1297 | info->mcr &= ~UART_MCR_RTS; |
| 1298 | } |
| 1299 | |
| 1300 | static void |
| 1301 | isdn_tty_unthrottle(struct tty_struct *tty) |
| 1302 | { |
| 1303 | modem_info *info = (modem_info *) tty->driver_data; |
| 1304 | |
| 1305 | if (isdn_tty_paranoia_check(info, tty->name, "isdn_tty_unthrottle")) |
| 1306 | return; |
| 1307 | if (I_IXOFF(tty)) { |
| 1308 | if (info->x_char) |
| 1309 | info->x_char = 0; |
| 1310 | else |
| 1311 | info->x_char = START_CHAR(tty); |
| 1312 | } |
| 1313 | info->mcr |= UART_MCR_RTS; |
| 1314 | } |
| 1315 | |
| 1316 | /* |
| 1317 | * ------------------------------------------------------------ |
| 1318 | * isdn_tty_ioctl() and friends |
| 1319 | * ------------------------------------------------------------ |
| 1320 | */ |
| 1321 | |
| 1322 | /* |
| 1323 | * isdn_tty_get_lsr_info - get line status register info |
| 1324 | * |
| 1325 | * Purpose: Let user call ioctl() to get info when the UART physically |
| 1326 | * is emptied. On bus types like RS485, the transmitter must |
| 1327 | * release the bus after transmitting. This must be done when |
| 1328 | * the transmit shift register is empty, not be done when the |
| 1329 | * transmit holding register is empty. This functionality |
| 1330 | * allows RS485 driver to be written in user space. |
| 1331 | */ |
| 1332 | static int |
| 1333 | isdn_tty_get_lsr_info(modem_info * info, uint __user * value) |
| 1334 | { |
| 1335 | u_char status; |
| 1336 | uint result; |
| 1337 | |
| 1338 | status = info->lsr; |
| 1339 | result = ((status & UART_LSR_TEMT) ? TIOCSER_TEMT : 0); |
| 1340 | return put_user(result, value); |
| 1341 | } |
| 1342 | |
| 1343 | |
| 1344 | static int |
| 1345 | isdn_tty_tiocmget(struct tty_struct *tty, struct file *file) |
| 1346 | { |
| 1347 | modem_info *info = (modem_info *) tty->driver_data; |
| 1348 | u_char control, status; |
| 1349 | |
| 1350 | if (isdn_tty_paranoia_check(info, tty->name, __FUNCTION__)) |
| 1351 | return -ENODEV; |
| 1352 | if (tty->flags & (1 << TTY_IO_ERROR)) |
| 1353 | return -EIO; |
| 1354 | |
| 1355 | #ifdef ISDN_DEBUG_MODEM_IOCTL |
| 1356 | printk(KERN_DEBUG "ttyI%d ioctl TIOCMGET\n", info->line); |
| 1357 | #endif |
| 1358 | |
| 1359 | control = info->mcr; |
| 1360 | status = info->msr; |
| 1361 | return ((control & UART_MCR_RTS) ? TIOCM_RTS : 0) |
| 1362 | | ((control & UART_MCR_DTR) ? TIOCM_DTR : 0) |
| 1363 | | ((status & UART_MSR_DCD) ? TIOCM_CAR : 0) |
| 1364 | | ((status & UART_MSR_RI) ? TIOCM_RNG : 0) |
| 1365 | | ((status & UART_MSR_DSR) ? TIOCM_DSR : 0) |
| 1366 | | ((status & UART_MSR_CTS) ? TIOCM_CTS : 0); |
| 1367 | } |
| 1368 | |
| 1369 | static int |
| 1370 | isdn_tty_tiocmset(struct tty_struct *tty, struct file *file, |
| 1371 | unsigned int set, unsigned int clear) |
| 1372 | { |
| 1373 | modem_info *info = (modem_info *) tty->driver_data; |
| 1374 | |
| 1375 | if (isdn_tty_paranoia_check(info, tty->name, __FUNCTION__)) |
| 1376 | return -ENODEV; |
| 1377 | if (tty->flags & (1 << TTY_IO_ERROR)) |
| 1378 | return -EIO; |
| 1379 | |
| 1380 | #ifdef ISDN_DEBUG_MODEM_IOCTL |
| 1381 | printk(KERN_DEBUG "ttyI%d ioctl TIOCMxxx: %x %x\n", info->line, set, clear); |
| 1382 | #endif |
| 1383 | |
| 1384 | if (set & TIOCM_RTS) |
| 1385 | info->mcr |= UART_MCR_RTS; |
| 1386 | if (set & TIOCM_DTR) { |
| 1387 | info->mcr |= UART_MCR_DTR; |
| 1388 | isdn_tty_modem_ncarrier(info); |
| 1389 | } |
| 1390 | |
| 1391 | if (clear & TIOCM_RTS) |
| 1392 | info->mcr &= ~UART_MCR_RTS; |
| 1393 | if (clear & TIOCM_DTR) { |
| 1394 | info->mcr &= ~UART_MCR_DTR; |
| 1395 | if (info->emu.mdmreg[REG_DTRHUP] & BIT_DTRHUP) { |
| 1396 | isdn_tty_modem_reset_regs(info, 0); |
| 1397 | #ifdef ISDN_DEBUG_MODEM_HUP |
| 1398 | printk(KERN_DEBUG "Mhup in TIOCMSET\n"); |
| 1399 | #endif |
| 1400 | if (info->online) |
| 1401 | info->ncarrier = 1; |
| 1402 | isdn_tty_modem_hup(info, 1); |
| 1403 | } |
| 1404 | } |
| 1405 | return 0; |
| 1406 | } |
| 1407 | |
| 1408 | static int |
| 1409 | isdn_tty_ioctl(struct tty_struct *tty, struct file *file, |
| 1410 | uint cmd, ulong arg) |
| 1411 | { |
| 1412 | modem_info *info = (modem_info *) tty->driver_data; |
| 1413 | int retval; |
| 1414 | |
| 1415 | if (isdn_tty_paranoia_check(info, tty->name, "isdn_tty_ioctl")) |
| 1416 | return -ENODEV; |
| 1417 | if (tty->flags & (1 << TTY_IO_ERROR)) |
| 1418 | return -EIO; |
| 1419 | switch (cmd) { |
| 1420 | case TCSBRK: /* SVID version: non-zero arg --> no break */ |
| 1421 | #ifdef ISDN_DEBUG_MODEM_IOCTL |
| 1422 | printk(KERN_DEBUG "ttyI%d ioctl TCSBRK\n", info->line); |
| 1423 | #endif |
| 1424 | retval = tty_check_change(tty); |
| 1425 | if (retval) |
| 1426 | return retval; |
| 1427 | tty_wait_until_sent(tty, 0); |
| 1428 | return 0; |
| 1429 | case TCSBRKP: /* support for POSIX tcsendbreak() */ |
| 1430 | #ifdef ISDN_DEBUG_MODEM_IOCTL |
| 1431 | printk(KERN_DEBUG "ttyI%d ioctl TCSBRKP\n", info->line); |
| 1432 | #endif |
| 1433 | retval = tty_check_change(tty); |
| 1434 | if (retval) |
| 1435 | return retval; |
| 1436 | tty_wait_until_sent(tty, 0); |
| 1437 | return 0; |
| 1438 | case TIOCGSOFTCAR: |
| 1439 | #ifdef ISDN_DEBUG_MODEM_IOCTL |
| 1440 | printk(KERN_DEBUG "ttyI%d ioctl TIOCGSOFTCAR\n", info->line); |
| 1441 | #endif |
| 1442 | return put_user(C_CLOCAL(tty) ? 1 : 0, (ulong __user *) arg); |
| 1443 | case TIOCSSOFTCAR: |
| 1444 | #ifdef ISDN_DEBUG_MODEM_IOCTL |
| 1445 | printk(KERN_DEBUG "ttyI%d ioctl TIOCSSOFTCAR\n", info->line); |
| 1446 | #endif |
| 1447 | if (get_user(arg, (ulong __user *) arg)) |
| 1448 | return -EFAULT; |
| 1449 | tty->termios->c_cflag = |
| 1450 | ((tty->termios->c_cflag & ~CLOCAL) | |
| 1451 | (arg ? CLOCAL : 0)); |
| 1452 | return 0; |
| 1453 | case TIOCSERGETLSR: /* Get line status register */ |
| 1454 | #ifdef ISDN_DEBUG_MODEM_IOCTL |
| 1455 | printk(KERN_DEBUG "ttyI%d ioctl TIOCSERGETLSR\n", info->line); |
| 1456 | #endif |
| 1457 | return isdn_tty_get_lsr_info(info, (uint __user *) arg); |
| 1458 | default: |
| 1459 | #ifdef ISDN_DEBUG_MODEM_IOCTL |
| 1460 | printk(KERN_DEBUG "UNKNOWN ioctl 0x%08x on ttyi%d\n", cmd, info->line); |
| 1461 | #endif |
| 1462 | return -ENOIOCTLCMD; |
| 1463 | } |
| 1464 | return 0; |
| 1465 | } |
| 1466 | |
| 1467 | static void |
| 1468 | isdn_tty_set_termios(struct tty_struct *tty, struct termios *old_termios) |
| 1469 | { |
| 1470 | modem_info *info = (modem_info *) tty->driver_data; |
| 1471 | |
| 1472 | if (!old_termios) |
| 1473 | isdn_tty_change_speed(info); |
| 1474 | else { |
| 1475 | if (tty->termios->c_cflag == old_termios->c_cflag) |
| 1476 | return; |
| 1477 | isdn_tty_change_speed(info); |
| 1478 | if ((old_termios->c_cflag & CRTSCTS) && |
| 1479 | !(tty->termios->c_cflag & CRTSCTS)) { |
| 1480 | tty->hw_stopped = 0; |
| 1481 | } |
| 1482 | } |
| 1483 | } |
| 1484 | |
| 1485 | /* |
| 1486 | * ------------------------------------------------------------ |
| 1487 | * isdn_tty_open() and friends |
| 1488 | * ------------------------------------------------------------ |
| 1489 | */ |
| 1490 | static int |
| 1491 | isdn_tty_block_til_ready(struct tty_struct *tty, struct file *filp, modem_info * info) |
| 1492 | { |
| 1493 | DECLARE_WAITQUEUE(wait, NULL); |
| 1494 | int do_clocal = 0; |
| 1495 | int retval; |
| 1496 | |
| 1497 | /* |
| 1498 | * If the device is in the middle of being closed, then block |
| 1499 | * until it's done, and then try again. |
| 1500 | */ |
| 1501 | if (tty_hung_up_p(filp) || |
| 1502 | (info->flags & ISDN_ASYNC_CLOSING)) { |
| 1503 | if (info->flags & ISDN_ASYNC_CLOSING) |
| 1504 | interruptible_sleep_on(&info->close_wait); |
| 1505 | #ifdef MODEM_DO_RESTART |
| 1506 | if (info->flags & ISDN_ASYNC_HUP_NOTIFY) |
| 1507 | return -EAGAIN; |
| 1508 | else |
| 1509 | return -ERESTARTSYS; |
| 1510 | #else |
| 1511 | return -EAGAIN; |
| 1512 | #endif |
| 1513 | } |
| 1514 | /* |
| 1515 | * If non-blocking mode is set, then make the check up front |
| 1516 | * and then exit. |
| 1517 | */ |
| 1518 | if ((filp->f_flags & O_NONBLOCK) || |
| 1519 | (tty->flags & (1 << TTY_IO_ERROR))) { |
| 1520 | if (info->flags & ISDN_ASYNC_CALLOUT_ACTIVE) |
| 1521 | return -EBUSY; |
| 1522 | info->flags |= ISDN_ASYNC_NORMAL_ACTIVE; |
| 1523 | return 0; |
| 1524 | } |
| 1525 | if (info->flags & ISDN_ASYNC_CALLOUT_ACTIVE) { |
| 1526 | if (info->normal_termios.c_cflag & CLOCAL) |
| 1527 | do_clocal = 1; |
| 1528 | } else { |
| 1529 | if (tty->termios->c_cflag & CLOCAL) |
| 1530 | do_clocal = 1; |
| 1531 | } |
| 1532 | /* |
| 1533 | * Block waiting for the carrier detect and the line to become |
| 1534 | * free (i.e., not in use by the callout). While we are in |
| 1535 | * this loop, info->count is dropped by one, so that |
| 1536 | * isdn_tty_close() knows when to free things. We restore it upon |
| 1537 | * exit, either normal or abnormal. |
| 1538 | */ |
| 1539 | retval = 0; |
| 1540 | add_wait_queue(&info->open_wait, &wait); |
| 1541 | #ifdef ISDN_DEBUG_MODEM_OPEN |
| 1542 | printk(KERN_DEBUG "isdn_tty_block_til_ready before block: ttyi%d, count = %d\n", |
| 1543 | info->line, info->count); |
| 1544 | #endif |
| 1545 | if (!(tty_hung_up_p(filp))) |
| 1546 | info->count--; |
| 1547 | info->blocked_open++; |
| 1548 | while (1) { |
| 1549 | set_current_state(TASK_INTERRUPTIBLE); |
| 1550 | if (tty_hung_up_p(filp) || |
| 1551 | !(info->flags & ISDN_ASYNC_INITIALIZED)) { |
| 1552 | #ifdef MODEM_DO_RESTART |
| 1553 | if (info->flags & ISDN_ASYNC_HUP_NOTIFY) |
| 1554 | retval = -EAGAIN; |
| 1555 | else |
| 1556 | retval = -ERESTARTSYS; |
| 1557 | #else |
| 1558 | retval = -EAGAIN; |
| 1559 | #endif |
| 1560 | break; |
| 1561 | } |
| 1562 | if (!(info->flags & ISDN_ASYNC_CALLOUT_ACTIVE) && |
| 1563 | !(info->flags & ISDN_ASYNC_CLOSING) && |
| 1564 | (do_clocal || (info->msr & UART_MSR_DCD))) { |
| 1565 | break; |
| 1566 | } |
| 1567 | if (signal_pending(current)) { |
| 1568 | retval = -ERESTARTSYS; |
| 1569 | break; |
| 1570 | } |
| 1571 | #ifdef ISDN_DEBUG_MODEM_OPEN |
| 1572 | printk(KERN_DEBUG "isdn_tty_block_til_ready blocking: ttyi%d, count = %d\n", |
| 1573 | info->line, info->count); |
| 1574 | #endif |
| 1575 | schedule(); |
| 1576 | } |
| 1577 | current->state = TASK_RUNNING; |
| 1578 | remove_wait_queue(&info->open_wait, &wait); |
| 1579 | if (!tty_hung_up_p(filp)) |
| 1580 | info->count++; |
| 1581 | info->blocked_open--; |
| 1582 | #ifdef ISDN_DEBUG_MODEM_OPEN |
| 1583 | printk(KERN_DEBUG "isdn_tty_block_til_ready after blocking: ttyi%d, count = %d\n", |
| 1584 | info->line, info->count); |
| 1585 | #endif |
| 1586 | if (retval) |
| 1587 | return retval; |
| 1588 | info->flags |= ISDN_ASYNC_NORMAL_ACTIVE; |
| 1589 | return 0; |
| 1590 | } |
| 1591 | |
| 1592 | /* |
| 1593 | * This routine is called whenever a serial port is opened. It |
| 1594 | * enables interrupts for a serial port, linking in its async structure into |
| 1595 | * the IRQ chain. It also performs the serial-specific |
| 1596 | * initialization for the tty structure. |
| 1597 | */ |
| 1598 | static int |
| 1599 | isdn_tty_open(struct tty_struct *tty, struct file *filp) |
| 1600 | { |
| 1601 | modem_info *info; |
| 1602 | int retval, line; |
| 1603 | |
| 1604 | line = tty->index; |
| 1605 | if (line < 0 || line > ISDN_MAX_CHANNELS) |
| 1606 | return -ENODEV; |
| 1607 | info = &dev->mdm.info[line]; |
| 1608 | if (isdn_tty_paranoia_check(info, tty->name, "isdn_tty_open")) |
| 1609 | return -ENODEV; |
| 1610 | if (!try_module_get(info->owner)) { |
| 1611 | printk(KERN_WARNING "%s: cannot reserve module\n", __FUNCTION__); |
| 1612 | return -ENODEV; |
| 1613 | } |
| 1614 | #ifdef ISDN_DEBUG_MODEM_OPEN |
| 1615 | printk(KERN_DEBUG "isdn_tty_open %s, count = %d\n", tty->name, |
| 1616 | info->count); |
| 1617 | #endif |
| 1618 | info->count++; |
| 1619 | tty->driver_data = info; |
| 1620 | info->tty = tty; |
| 1621 | /* |
| 1622 | * Start up serial port |
| 1623 | */ |
| 1624 | retval = isdn_tty_startup(info); |
| 1625 | if (retval) { |
| 1626 | #ifdef ISDN_DEBUG_MODEM_OPEN |
| 1627 | printk(KERN_DEBUG "isdn_tty_open return after startup\n"); |
| 1628 | #endif |
| 1629 | module_put(info->owner); |
| 1630 | return retval; |
| 1631 | } |
| 1632 | retval = isdn_tty_block_til_ready(tty, filp, info); |
| 1633 | if (retval) { |
| 1634 | #ifdef ISDN_DEBUG_MODEM_OPEN |
| 1635 | printk(KERN_DEBUG "isdn_tty_open return after isdn_tty_block_til_ready \n"); |
| 1636 | #endif |
| 1637 | module_put(info->owner); |
| 1638 | return retval; |
| 1639 | } |
| 1640 | #ifdef ISDN_DEBUG_MODEM_OPEN |
| 1641 | printk(KERN_DEBUG "isdn_tty_open ttyi%d successful...\n", info->line); |
| 1642 | #endif |
| 1643 | dev->modempoll++; |
| 1644 | #ifdef ISDN_DEBUG_MODEM_OPEN |
| 1645 | printk(KERN_DEBUG "isdn_tty_open normal exit\n"); |
| 1646 | #endif |
| 1647 | return 0; |
| 1648 | } |
| 1649 | |
| 1650 | static void |
| 1651 | isdn_tty_close(struct tty_struct *tty, struct file *filp) |
| 1652 | { |
| 1653 | modem_info *info = (modem_info *) tty->driver_data; |
| 1654 | ulong timeout; |
| 1655 | |
| 1656 | if (!info || isdn_tty_paranoia_check(info, tty->name, "isdn_tty_close")) |
| 1657 | return; |
| 1658 | if (tty_hung_up_p(filp)) { |
| 1659 | #ifdef ISDN_DEBUG_MODEM_OPEN |
| 1660 | printk(KERN_DEBUG "isdn_tty_close return after tty_hung_up_p\n"); |
| 1661 | #endif |
| 1662 | return; |
| 1663 | } |
| 1664 | if ((tty->count == 1) && (info->count != 1)) { |
| 1665 | /* |
| 1666 | * Uh, oh. tty->count is 1, which means that the tty |
| 1667 | * structure will be freed. Info->count should always |
| 1668 | * be one in these conditions. If it's greater than |
| 1669 | * one, we've got real problems, since it means the |
| 1670 | * serial port won't be shutdown. |
| 1671 | */ |
| 1672 | printk(KERN_ERR "isdn_tty_close: bad port count; tty->count is 1, " |
| 1673 | "info->count is %d\n", info->count); |
| 1674 | info->count = 1; |
| 1675 | } |
| 1676 | if (--info->count < 0) { |
| 1677 | printk(KERN_ERR "isdn_tty_close: bad port count for ttyi%d: %d\n", |
| 1678 | info->line, info->count); |
| 1679 | info->count = 0; |
| 1680 | } |
| 1681 | if (info->count) { |
| 1682 | #ifdef ISDN_DEBUG_MODEM_OPEN |
| 1683 | printk(KERN_DEBUG "isdn_tty_close after info->count != 0\n"); |
| 1684 | #endif |
Karsten Keil | 7cb9478 | 2006-03-06 15:42:39 -0800 | [diff] [blame] | 1685 | module_put(info->owner); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1686 | return; |
| 1687 | } |
| 1688 | info->flags |= ISDN_ASYNC_CLOSING; |
| 1689 | /* |
| 1690 | * Save the termios structure, since this port may have |
| 1691 | * separate termios for callout and dialin. |
| 1692 | */ |
| 1693 | if (info->flags & ISDN_ASYNC_NORMAL_ACTIVE) |
| 1694 | info->normal_termios = *tty->termios; |
| 1695 | if (info->flags & ISDN_ASYNC_CALLOUT_ACTIVE) |
| 1696 | info->callout_termios = *tty->termios; |
| 1697 | |
| 1698 | tty->closing = 1; |
| 1699 | /* |
| 1700 | * At this point we stop accepting input. To do this, we |
| 1701 | * disable the receive line status interrupts, and tell the |
| 1702 | * interrupt driver to stop checking the data ready bit in the |
| 1703 | * line status register. |
| 1704 | */ |
| 1705 | if (info->flags & ISDN_ASYNC_INITIALIZED) { |
| 1706 | tty_wait_until_sent(tty, 3000); /* 30 seconds timeout */ |
| 1707 | /* |
| 1708 | * Before we drop DTR, make sure the UART transmitter |
| 1709 | * has completely drained; this is especially |
| 1710 | * important if there is a transmit FIFO! |
| 1711 | */ |
| 1712 | timeout = jiffies + HZ; |
| 1713 | while (!(info->lsr & UART_LSR_TEMT)) { |
Nishanth Aravamudan | 24763c4 | 2005-11-07 01:01:16 -0800 | [diff] [blame] | 1714 | schedule_timeout_interruptible(20); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1715 | if (time_after(jiffies,timeout)) |
| 1716 | break; |
| 1717 | } |
| 1718 | } |
| 1719 | dev->modempoll--; |
| 1720 | isdn_tty_shutdown(info); |
| 1721 | |
| 1722 | if (tty->driver->flush_buffer) |
| 1723 | tty->driver->flush_buffer(tty); |
| 1724 | tty_ldisc_flush(tty); |
| 1725 | info->tty = NULL; |
| 1726 | info->ncarrier = 0; |
| 1727 | tty->closing = 0; |
| 1728 | module_put(info->owner); |
| 1729 | if (info->blocked_open) { |
| 1730 | msleep_interruptible(500); |
| 1731 | wake_up_interruptible(&info->open_wait); |
| 1732 | } |
| 1733 | info->flags &= ~(ISDN_ASYNC_NORMAL_ACTIVE | ISDN_ASYNC_CLOSING); |
| 1734 | wake_up_interruptible(&info->close_wait); |
| 1735 | #ifdef ISDN_DEBUG_MODEM_OPEN |
| 1736 | printk(KERN_DEBUG "isdn_tty_close normal exit\n"); |
| 1737 | #endif |
| 1738 | } |
| 1739 | |
| 1740 | /* |
| 1741 | * isdn_tty_hangup() --- called by tty_hangup() when a hangup is signaled. |
| 1742 | */ |
| 1743 | static void |
| 1744 | isdn_tty_hangup(struct tty_struct *tty) |
| 1745 | { |
| 1746 | modem_info *info = (modem_info *) tty->driver_data; |
| 1747 | |
| 1748 | if (isdn_tty_paranoia_check(info, tty->name, "isdn_tty_hangup")) |
| 1749 | return; |
| 1750 | isdn_tty_shutdown(info); |
| 1751 | info->count = 0; |
| 1752 | info->flags &= ~(ISDN_ASYNC_NORMAL_ACTIVE | ISDN_ASYNC_CALLOUT_ACTIVE); |
| 1753 | info->tty = NULL; |
| 1754 | wake_up_interruptible(&info->open_wait); |
| 1755 | } |
| 1756 | |
| 1757 | /* This routine initializes all emulator-data. |
| 1758 | */ |
| 1759 | static void |
| 1760 | isdn_tty_reset_profile(atemu * m) |
| 1761 | { |
| 1762 | m->profile[0] = 0; |
| 1763 | m->profile[1] = 0; |
| 1764 | m->profile[2] = 43; |
| 1765 | m->profile[3] = 13; |
| 1766 | m->profile[4] = 10; |
| 1767 | m->profile[5] = 8; |
| 1768 | m->profile[6] = 3; |
| 1769 | m->profile[7] = 60; |
| 1770 | m->profile[8] = 2; |
| 1771 | m->profile[9] = 6; |
| 1772 | m->profile[10] = 7; |
| 1773 | m->profile[11] = 70; |
| 1774 | m->profile[12] = 0x45; |
| 1775 | m->profile[13] = 4; |
| 1776 | m->profile[14] = ISDN_PROTO_L2_X75I; |
| 1777 | m->profile[15] = ISDN_PROTO_L3_TRANS; |
| 1778 | m->profile[16] = ISDN_SERIAL_XMIT_SIZE / 16; |
| 1779 | m->profile[17] = ISDN_MODEM_WINSIZE; |
| 1780 | m->profile[18] = 4; |
| 1781 | m->profile[19] = 0; |
| 1782 | m->profile[20] = 0; |
| 1783 | m->profile[23] = 0; |
| 1784 | m->pmsn[0] = '\0'; |
| 1785 | m->plmsn[0] = '\0'; |
| 1786 | } |
| 1787 | |
| 1788 | #ifdef CONFIG_ISDN_AUDIO |
| 1789 | static void |
| 1790 | isdn_tty_modem_reset_vpar(atemu * m) |
| 1791 | { |
| 1792 | m->vpar[0] = 2; /* Voice-device (2 = phone line) */ |
| 1793 | m->vpar[1] = 0; /* Silence detection level (0 = none ) */ |
| 1794 | m->vpar[2] = 70; /* Silence interval (7 sec. ) */ |
| 1795 | m->vpar[3] = 2; /* Compression type (1 = ADPCM-2 ) */ |
| 1796 | m->vpar[4] = 0; /* DTMF detection level (0 = softcode ) */ |
| 1797 | m->vpar[5] = 8; /* DTMF interval (8 * 5 ms. ) */ |
| 1798 | } |
| 1799 | #endif |
| 1800 | |
| 1801 | #ifdef CONFIG_ISDN_TTY_FAX |
| 1802 | static void |
| 1803 | isdn_tty_modem_reset_faxpar(modem_info * info) |
| 1804 | { |
| 1805 | T30_s *f = info->fax; |
| 1806 | |
| 1807 | f->code = 0; |
| 1808 | f->phase = ISDN_FAX_PHASE_IDLE; |
| 1809 | f->direction = 0; |
| 1810 | f->resolution = 1; /* fine */ |
| 1811 | f->rate = 5; /* 14400 bit/s */ |
| 1812 | f->width = 0; |
| 1813 | f->length = 0; |
| 1814 | f->compression = 0; |
| 1815 | f->ecm = 0; |
| 1816 | f->binary = 0; |
| 1817 | f->scantime = 0; |
| 1818 | memset(&f->id[0], 32, FAXIDLEN - 1); |
| 1819 | f->id[FAXIDLEN - 1] = 0; |
| 1820 | f->badlin = 0; |
| 1821 | f->badmul = 0; |
| 1822 | f->bor = 0; |
| 1823 | f->nbc = 0; |
| 1824 | f->cq = 0; |
| 1825 | f->cr = 0; |
| 1826 | f->ctcrty = 0; |
| 1827 | f->minsp = 0; |
| 1828 | f->phcto = 30; |
| 1829 | f->rel = 0; |
| 1830 | memset(&f->pollid[0], 32, FAXIDLEN - 1); |
| 1831 | f->pollid[FAXIDLEN - 1] = 0; |
| 1832 | } |
| 1833 | #endif |
| 1834 | |
| 1835 | static void |
| 1836 | isdn_tty_modem_reset_regs(modem_info * info, int force) |
| 1837 | { |
| 1838 | atemu *m = &info->emu; |
| 1839 | if ((m->mdmreg[REG_DTRR] & BIT_DTRR) || force) { |
| 1840 | memcpy(m->mdmreg, m->profile, ISDN_MODEM_NUMREG); |
| 1841 | memcpy(m->msn, m->pmsn, ISDN_MSNLEN); |
| 1842 | memcpy(m->lmsn, m->plmsn, ISDN_LMSNLEN); |
| 1843 | info->xmit_size = m->mdmreg[REG_PSIZE] * 16; |
| 1844 | } |
| 1845 | #ifdef CONFIG_ISDN_AUDIO |
| 1846 | isdn_tty_modem_reset_vpar(m); |
| 1847 | #endif |
| 1848 | #ifdef CONFIG_ISDN_TTY_FAX |
| 1849 | isdn_tty_modem_reset_faxpar(info); |
| 1850 | #endif |
| 1851 | m->mdmcmdl = 0; |
| 1852 | } |
| 1853 | |
| 1854 | static void |
| 1855 | modem_write_profile(atemu * m) |
| 1856 | { |
| 1857 | memcpy(m->profile, m->mdmreg, ISDN_MODEM_NUMREG); |
| 1858 | memcpy(m->pmsn, m->msn, ISDN_MSNLEN); |
| 1859 | memcpy(m->plmsn, m->lmsn, ISDN_LMSNLEN); |
| 1860 | if (dev->profd) |
| 1861 | send_sig(SIGIO, dev->profd, 1); |
| 1862 | } |
| 1863 | |
| 1864 | static struct tty_operations modem_ops = { |
| 1865 | .open = isdn_tty_open, |
| 1866 | .close = isdn_tty_close, |
| 1867 | .write = isdn_tty_write, |
| 1868 | .flush_chars = isdn_tty_flush_chars, |
| 1869 | .write_room = isdn_tty_write_room, |
| 1870 | .chars_in_buffer = isdn_tty_chars_in_buffer, |
| 1871 | .flush_buffer = isdn_tty_flush_buffer, |
| 1872 | .ioctl = isdn_tty_ioctl, |
| 1873 | .throttle = isdn_tty_throttle, |
| 1874 | .unthrottle = isdn_tty_unthrottle, |
| 1875 | .set_termios = isdn_tty_set_termios, |
| 1876 | .hangup = isdn_tty_hangup, |
| 1877 | .tiocmget = isdn_tty_tiocmget, |
| 1878 | .tiocmset = isdn_tty_tiocmset, |
| 1879 | }; |
| 1880 | |
| 1881 | int |
| 1882 | isdn_tty_modem_init(void) |
| 1883 | { |
| 1884 | isdn_modem_t *m; |
| 1885 | int i, retval; |
| 1886 | modem_info *info; |
| 1887 | |
| 1888 | m = &dev->mdm; |
| 1889 | m->tty_modem = alloc_tty_driver(ISDN_MAX_CHANNELS); |
| 1890 | if (!m->tty_modem) |
| 1891 | return -ENOMEM; |
| 1892 | m->tty_modem->name = "ttyI"; |
| 1893 | m->tty_modem->devfs_name = "isdn/ttyI"; |
| 1894 | m->tty_modem->major = ISDN_TTY_MAJOR; |
| 1895 | m->tty_modem->minor_start = 0; |
| 1896 | m->tty_modem->type = TTY_DRIVER_TYPE_SERIAL; |
| 1897 | m->tty_modem->subtype = SERIAL_TYPE_NORMAL; |
| 1898 | m->tty_modem->init_termios = tty_std_termios; |
| 1899 | m->tty_modem->init_termios.c_cflag = B9600 | CS8 | CREAD | HUPCL | CLOCAL; |
| 1900 | m->tty_modem->flags = TTY_DRIVER_REAL_RAW | TTY_DRIVER_NO_DEVFS; |
| 1901 | m->tty_modem->driver_name = "isdn_tty"; |
| 1902 | tty_set_operations(m->tty_modem, &modem_ops); |
| 1903 | retval = tty_register_driver(m->tty_modem); |
| 1904 | if (retval) { |
| 1905 | printk(KERN_WARNING "isdn_tty: Couldn't register modem-device\n"); |
| 1906 | goto err; |
| 1907 | } |
| 1908 | for (i = 0; i < ISDN_MAX_CHANNELS; i++) { |
| 1909 | info = &m->info[i]; |
| 1910 | #ifdef CONFIG_ISDN_TTY_FAX |
| 1911 | if (!(info->fax = kmalloc(sizeof(T30_s), GFP_KERNEL))) { |
| 1912 | printk(KERN_ERR "Could not allocate fax t30-buffer\n"); |
| 1913 | retval = -ENOMEM; |
| 1914 | goto err_unregister; |
| 1915 | } |
| 1916 | #endif |
| 1917 | #ifdef MODULE |
| 1918 | info->owner = THIS_MODULE; |
| 1919 | #endif |
| 1920 | spin_lock_init(&info->readlock); |
| 1921 | init_MUTEX(&info->write_sem); |
| 1922 | sprintf(info->last_cause, "0000"); |
| 1923 | sprintf(info->last_num, "none"); |
| 1924 | info->last_dir = 0; |
| 1925 | info->last_lhup = 1; |
| 1926 | info->last_l2 = -1; |
| 1927 | info->last_si = 0; |
| 1928 | isdn_tty_reset_profile(&info->emu); |
| 1929 | isdn_tty_modem_reset_regs(info, 1); |
| 1930 | info->magic = ISDN_ASYNC_MAGIC; |
| 1931 | info->line = i; |
| 1932 | info->tty = NULL; |
| 1933 | info->x_char = 0; |
| 1934 | info->count = 0; |
| 1935 | info->blocked_open = 0; |
| 1936 | init_waitqueue_head(&info->open_wait); |
| 1937 | init_waitqueue_head(&info->close_wait); |
| 1938 | info->isdn_driver = -1; |
| 1939 | info->isdn_channel = -1; |
| 1940 | info->drv_index = -1; |
| 1941 | info->xmit_size = ISDN_SERIAL_XMIT_SIZE; |
| 1942 | init_timer(&info->nc_timer); |
| 1943 | info->nc_timer.function = isdn_tty_modem_do_ncarrier; |
| 1944 | info->nc_timer.data = (unsigned long) info; |
| 1945 | skb_queue_head_init(&info->xmit_queue); |
| 1946 | #ifdef CONFIG_ISDN_AUDIO |
| 1947 | skb_queue_head_init(&info->dtmf_queue); |
| 1948 | #endif |
| 1949 | if (!(info->xmit_buf = kmalloc(ISDN_SERIAL_XMIT_MAX + 5, GFP_KERNEL))) { |
| 1950 | printk(KERN_ERR "Could not allocate modem xmit-buffer\n"); |
| 1951 | retval = -ENOMEM; |
| 1952 | goto err_unregister; |
| 1953 | } |
| 1954 | /* Make room for T.70 header */ |
| 1955 | info->xmit_buf += 4; |
| 1956 | } |
| 1957 | return 0; |
| 1958 | err_unregister: |
| 1959 | for (i--; i >= 0; i--) { |
| 1960 | info = &m->info[i]; |
| 1961 | #ifdef CONFIG_ISDN_TTY_FAX |
| 1962 | kfree(info->fax); |
| 1963 | #endif |
| 1964 | kfree(info->xmit_buf - 4); |
| 1965 | } |
| 1966 | tty_unregister_driver(m->tty_modem); |
| 1967 | err: |
| 1968 | put_tty_driver(m->tty_modem); |
| 1969 | m->tty_modem = NULL; |
| 1970 | return retval; |
| 1971 | } |
| 1972 | |
| 1973 | void |
| 1974 | isdn_tty_exit(void) |
| 1975 | { |
| 1976 | modem_info *info; |
| 1977 | int i; |
| 1978 | |
| 1979 | for (i = 0; i < ISDN_MAX_CHANNELS; i++) { |
| 1980 | info = &dev->mdm.info[i]; |
| 1981 | isdn_tty_cleanup_xmit(info); |
| 1982 | #ifdef CONFIG_ISDN_TTY_FAX |
| 1983 | kfree(info->fax); |
| 1984 | #endif |
| 1985 | kfree(info->xmit_buf - 4); |
| 1986 | } |
| 1987 | tty_unregister_driver(dev->mdm.tty_modem); |
| 1988 | put_tty_driver(dev->mdm.tty_modem); |
| 1989 | dev->mdm.tty_modem = NULL; |
| 1990 | } |
| 1991 | |
| 1992 | |
| 1993 | /* |
| 1994 | * isdn_tty_match_icall(char *MSN, atemu *tty_emulator, int dev_idx) |
| 1995 | * match the MSN against the MSNs (glob patterns) defined for tty_emulator, |
| 1996 | * and return 0 for match, 1 for no match, 2 if MSN could match if longer. |
| 1997 | */ |
| 1998 | |
| 1999 | static int |
| 2000 | isdn_tty_match_icall(char *cid, atemu *emu, int di) |
| 2001 | { |
| 2002 | #ifdef ISDN_DEBUG_MODEM_ICALL |
| 2003 | printk(KERN_DEBUG "m_fi: msn=%s lmsn=%s mmsn=%s mreg[SI1]=%d mreg[SI2]=%d\n", |
| 2004 | emu->msn, emu->lmsn, isdn_map_eaz2msn(emu->msn, di), |
| 2005 | emu->mdmreg[REG_SI1], emu->mdmreg[REG_SI2]); |
| 2006 | #endif |
| 2007 | if (strlen(emu->lmsn)) { |
| 2008 | char *p = emu->lmsn; |
| 2009 | char *q; |
| 2010 | int tmp; |
| 2011 | int ret = 0; |
| 2012 | |
| 2013 | while (1) { |
| 2014 | if ((q = strchr(p, ';'))) |
| 2015 | *q = '\0'; |
| 2016 | if ((tmp = isdn_msncmp(cid, isdn_map_eaz2msn(p, di))) > ret) |
| 2017 | ret = tmp; |
| 2018 | #ifdef ISDN_DEBUG_MODEM_ICALL |
| 2019 | printk(KERN_DEBUG "m_fi: lmsnX=%s mmsn=%s -> tmp=%d\n", |
| 2020 | p, isdn_map_eaz2msn(emu->msn, di), tmp); |
| 2021 | #endif |
| 2022 | if (q) { |
| 2023 | *q = ';'; |
| 2024 | p = q; |
| 2025 | p++; |
| 2026 | } |
| 2027 | if (!tmp) |
| 2028 | return 0; |
| 2029 | if (!q) |
| 2030 | break; |
| 2031 | } |
| 2032 | return ret; |
| 2033 | } else { |
| 2034 | int tmp; |
| 2035 | tmp = isdn_msncmp(cid, isdn_map_eaz2msn(emu->msn, di)); |
| 2036 | #ifdef ISDN_DEBUG_MODEM_ICALL |
| 2037 | printk(KERN_DEBUG "m_fi: mmsn=%s -> tmp=%d\n", |
| 2038 | isdn_map_eaz2msn(emu->msn, di), tmp); |
| 2039 | #endif |
| 2040 | return tmp; |
| 2041 | } |
| 2042 | } |
| 2043 | |
| 2044 | /* |
| 2045 | * An incoming call-request has arrived. |
| 2046 | * Search the tty-devices for an appropriate device and bind |
| 2047 | * it to the ISDN-Channel. |
| 2048 | * Return: |
| 2049 | * |
| 2050 | * 0 = No matching device found. |
| 2051 | * 1 = A matching device found. |
| 2052 | * 3 = No match found, but eventually would match, if |
| 2053 | * CID is longer. |
| 2054 | */ |
| 2055 | int |
| 2056 | isdn_tty_find_icall(int di, int ch, setup_parm *setup) |
| 2057 | { |
| 2058 | char *eaz; |
| 2059 | int i; |
| 2060 | int wret; |
| 2061 | int idx; |
| 2062 | int si1; |
| 2063 | int si2; |
| 2064 | char *nr; |
| 2065 | ulong flags; |
| 2066 | |
| 2067 | if (!setup->phone[0]) { |
| 2068 | nr = "0"; |
| 2069 | printk(KERN_INFO "isdn_tty: Incoming call without OAD, assuming '0'\n"); |
| 2070 | } else |
| 2071 | nr = setup->phone; |
| 2072 | si1 = (int) setup->si1; |
| 2073 | si2 = (int) setup->si2; |
| 2074 | if (!setup->eazmsn[0]) { |
| 2075 | printk(KERN_WARNING "isdn_tty: Incoming call without CPN, assuming '0'\n"); |
| 2076 | eaz = "0"; |
| 2077 | } else |
| 2078 | eaz = setup->eazmsn; |
| 2079 | #ifdef ISDN_DEBUG_MODEM_ICALL |
| 2080 | printk(KERN_DEBUG "m_fi: eaz=%s si1=%d si2=%d\n", eaz, si1, si2); |
| 2081 | #endif |
| 2082 | wret = 0; |
| 2083 | spin_lock_irqsave(&dev->lock, flags); |
| 2084 | for (i = 0; i < ISDN_MAX_CHANNELS; i++) { |
| 2085 | modem_info *info = &dev->mdm.info[i]; |
| 2086 | |
| 2087 | if (info->count == 0) |
| 2088 | continue; |
| 2089 | if ((info->emu.mdmreg[REG_SI1] & si2bit[si1]) && /* SI1 is matching */ |
| 2090 | (info->emu.mdmreg[REG_SI2] == si2)) { /* SI2 is matching */ |
| 2091 | idx = isdn_dc2minor(di, ch); |
| 2092 | #ifdef ISDN_DEBUG_MODEM_ICALL |
| 2093 | printk(KERN_DEBUG "m_fi: match1 wret=%d\n", wret); |
| 2094 | printk(KERN_DEBUG "m_fi: idx=%d flags=%08lx drv=%d ch=%d usg=%d\n", idx, |
| 2095 | info->flags, info->isdn_driver, info->isdn_channel, |
| 2096 | dev->usage[idx]); |
| 2097 | #endif |
| 2098 | if ( |
| 2099 | #ifndef FIX_FILE_TRANSFER |
| 2100 | (info->flags & ISDN_ASYNC_NORMAL_ACTIVE) && |
| 2101 | #endif |
| 2102 | (info->isdn_driver == -1) && |
| 2103 | (info->isdn_channel == -1) && |
| 2104 | (USG_NONE(dev->usage[idx]))) { |
| 2105 | int matchret; |
| 2106 | |
| 2107 | if ((matchret = isdn_tty_match_icall(eaz, &info->emu, di)) > wret) |
| 2108 | wret = matchret; |
| 2109 | if (!matchret) { /* EAZ is matching */ |
| 2110 | info->isdn_driver = di; |
| 2111 | info->isdn_channel = ch; |
| 2112 | info->drv_index = idx; |
| 2113 | dev->m_idx[idx] = info->line; |
| 2114 | dev->usage[idx] &= ISDN_USAGE_EXCLUSIVE; |
| 2115 | dev->usage[idx] |= isdn_calc_usage(si1, info->emu.mdmreg[REG_L2PROT]); |
| 2116 | strcpy(dev->num[idx], nr); |
| 2117 | strcpy(info->emu.cpn, eaz); |
| 2118 | info->emu.mdmreg[REG_SI1I] = si2bit[si1]; |
| 2119 | info->emu.mdmreg[REG_PLAN] = setup->plan; |
| 2120 | info->emu.mdmreg[REG_SCREEN] = setup->screen; |
| 2121 | isdn_info_update(); |
| 2122 | spin_unlock_irqrestore(&dev->lock, flags); |
| 2123 | printk(KERN_INFO "isdn_tty: call from %s, -> RING on ttyI%d\n", nr, |
| 2124 | info->line); |
| 2125 | info->msr |= UART_MSR_RI; |
| 2126 | isdn_tty_modem_result(RESULT_RING, info); |
| 2127 | isdn_timer_ctrl(ISDN_TIMER_MODEMRING, 1); |
| 2128 | return 1; |
| 2129 | } |
| 2130 | } |
| 2131 | } |
| 2132 | } |
| 2133 | spin_unlock_irqrestore(&dev->lock, flags); |
| 2134 | printk(KERN_INFO "isdn_tty: call from %s -> %s %s\n", nr, eaz, |
| 2135 | ((dev->drv[di]->flags & DRV_FLAG_REJBUS) && (wret != 2))? "rejected" : "ignored"); |
| 2136 | return (wret == 2)?3:0; |
| 2137 | } |
| 2138 | |
| 2139 | #define TTY_IS_ACTIVE(info) \ |
| 2140 | (info->flags & (ISDN_ASYNC_NORMAL_ACTIVE | ISDN_ASYNC_CALLOUT_ACTIVE)) |
| 2141 | |
| 2142 | int |
| 2143 | isdn_tty_stat_callback(int i, isdn_ctrl *c) |
| 2144 | { |
| 2145 | int mi; |
| 2146 | modem_info *info; |
| 2147 | char *e; |
| 2148 | |
| 2149 | if (i < 0) |
| 2150 | return 0; |
| 2151 | if ((mi = dev->m_idx[i]) >= 0) { |
| 2152 | info = &dev->mdm.info[mi]; |
| 2153 | switch (c->command) { |
| 2154 | case ISDN_STAT_CINF: |
| 2155 | printk(KERN_DEBUG "CHARGEINFO on ttyI%d: %ld %s\n", info->line, c->arg, c->parm.num); |
| 2156 | info->emu.charge = (unsigned) simple_strtoul(c->parm.num, &e, 10); |
| 2157 | if (e == (char *)c->parm.num) |
| 2158 | info->emu.charge = 0; |
| 2159 | |
| 2160 | break; |
| 2161 | case ISDN_STAT_BSENT: |
| 2162 | #ifdef ISDN_TTY_STAT_DEBUG |
| 2163 | printk(KERN_DEBUG "tty_STAT_BSENT ttyI%d\n", info->line); |
| 2164 | #endif |
| 2165 | if ((info->isdn_driver == c->driver) && |
| 2166 | (info->isdn_channel == c->arg)) { |
| 2167 | info->msr |= UART_MSR_CTS; |
| 2168 | if (info->send_outstanding) |
| 2169 | if (!(--info->send_outstanding)) |
| 2170 | info->lsr |= UART_LSR_TEMT; |
| 2171 | isdn_tty_tint(info); |
| 2172 | return 1; |
| 2173 | } |
| 2174 | break; |
| 2175 | case ISDN_STAT_CAUSE: |
| 2176 | #ifdef ISDN_TTY_STAT_DEBUG |
| 2177 | printk(KERN_DEBUG "tty_STAT_CAUSE ttyI%d\n", info->line); |
| 2178 | #endif |
| 2179 | /* Signal cause to tty-device */ |
| 2180 | strncpy(info->last_cause, c->parm.num, 5); |
| 2181 | return 1; |
| 2182 | case ISDN_STAT_DISPLAY: |
| 2183 | #ifdef ISDN_TTY_STAT_DEBUG |
| 2184 | printk(KERN_DEBUG "tty_STAT_DISPLAY ttyI%d\n", info->line); |
| 2185 | #endif |
| 2186 | /* Signal display to tty-device */ |
| 2187 | if ((info->emu.mdmreg[REG_DISPLAY] & BIT_DISPLAY) && |
| 2188 | !(info->emu.mdmreg[REG_RESPNUM] & BIT_RESPNUM)) { |
| 2189 | isdn_tty_at_cout("\r\n", info); |
| 2190 | isdn_tty_at_cout("DISPLAY: ", info); |
| 2191 | isdn_tty_at_cout(c->parm.display, info); |
| 2192 | isdn_tty_at_cout("\r\n", info); |
| 2193 | } |
| 2194 | return 1; |
| 2195 | case ISDN_STAT_DCONN: |
| 2196 | #ifdef ISDN_TTY_STAT_DEBUG |
| 2197 | printk(KERN_DEBUG "tty_STAT_DCONN ttyI%d\n", info->line); |
| 2198 | #endif |
| 2199 | if (TTY_IS_ACTIVE(info)) { |
| 2200 | if (info->dialing == 1) { |
| 2201 | info->dialing = 2; |
| 2202 | return 1; |
| 2203 | } |
| 2204 | } |
| 2205 | break; |
| 2206 | case ISDN_STAT_DHUP: |
| 2207 | #ifdef ISDN_TTY_STAT_DEBUG |
| 2208 | printk(KERN_DEBUG "tty_STAT_DHUP ttyI%d\n", info->line); |
| 2209 | #endif |
| 2210 | if (TTY_IS_ACTIVE(info)) { |
| 2211 | if (info->dialing == 1) |
| 2212 | isdn_tty_modem_result(RESULT_BUSY, info); |
| 2213 | if (info->dialing > 1) |
| 2214 | isdn_tty_modem_result(RESULT_NO_CARRIER, info); |
| 2215 | info->dialing = 0; |
| 2216 | #ifdef ISDN_DEBUG_MODEM_HUP |
| 2217 | printk(KERN_DEBUG "Mhup in ISDN_STAT_DHUP\n"); |
| 2218 | #endif |
| 2219 | isdn_tty_modem_hup(info, 0); |
| 2220 | return 1; |
| 2221 | } |
| 2222 | break; |
| 2223 | case ISDN_STAT_BCONN: |
| 2224 | #ifdef ISDN_TTY_STAT_DEBUG |
| 2225 | printk(KERN_DEBUG "tty_STAT_BCONN ttyI%d\n", info->line); |
| 2226 | #endif |
| 2227 | /* Wake up any processes waiting |
| 2228 | * for incoming call of this device when |
| 2229 | * DCD follow the state of incoming carrier |
| 2230 | */ |
| 2231 | if (info->blocked_open && |
| 2232 | (info->emu.mdmreg[REG_DCD] & BIT_DCD)) { |
| 2233 | wake_up_interruptible(&info->open_wait); |
| 2234 | } |
| 2235 | |
| 2236 | /* Schedule CONNECT-Message to any tty |
| 2237 | * waiting for it and |
| 2238 | * set DCD-bit of its modem-status. |
| 2239 | */ |
| 2240 | if (TTY_IS_ACTIVE(info) || |
| 2241 | (info->blocked_open && (info->emu.mdmreg[REG_DCD] & BIT_DCD))) { |
| 2242 | info->msr |= UART_MSR_DCD; |
| 2243 | info->emu.charge = 0; |
| 2244 | if (info->dialing & 0xf) |
| 2245 | info->last_dir = 1; |
| 2246 | else |
| 2247 | info->last_dir = 0; |
| 2248 | info->dialing = 0; |
| 2249 | info->rcvsched = 1; |
| 2250 | if (USG_MODEM(dev->usage[i])) { |
| 2251 | if (info->emu.mdmreg[REG_L2PROT] == ISDN_PROTO_L2_MODEM) { |
| 2252 | strcpy(info->emu.connmsg, c->parm.num); |
| 2253 | isdn_tty_modem_result(RESULT_CONNECT, info); |
| 2254 | } else |
| 2255 | isdn_tty_modem_result(RESULT_CONNECT64000, info); |
| 2256 | } |
| 2257 | if (USG_VOICE(dev->usage[i])) |
| 2258 | isdn_tty_modem_result(RESULT_VCON, info); |
| 2259 | return 1; |
| 2260 | } |
| 2261 | break; |
| 2262 | case ISDN_STAT_BHUP: |
| 2263 | #ifdef ISDN_TTY_STAT_DEBUG |
| 2264 | printk(KERN_DEBUG "tty_STAT_BHUP ttyI%d\n", info->line); |
| 2265 | #endif |
| 2266 | if (TTY_IS_ACTIVE(info)) { |
| 2267 | #ifdef ISDN_DEBUG_MODEM_HUP |
| 2268 | printk(KERN_DEBUG "Mhup in ISDN_STAT_BHUP\n"); |
| 2269 | #endif |
| 2270 | isdn_tty_modem_hup(info, 0); |
| 2271 | return 1; |
| 2272 | } |
| 2273 | break; |
| 2274 | case ISDN_STAT_NODCH: |
| 2275 | #ifdef ISDN_TTY_STAT_DEBUG |
| 2276 | printk(KERN_DEBUG "tty_STAT_NODCH ttyI%d\n", info->line); |
| 2277 | #endif |
| 2278 | if (TTY_IS_ACTIVE(info)) { |
| 2279 | if (info->dialing) { |
| 2280 | info->dialing = 0; |
| 2281 | info->last_l2 = -1; |
| 2282 | info->last_si = 0; |
| 2283 | sprintf(info->last_cause, "0000"); |
| 2284 | isdn_tty_modem_result(RESULT_NO_DIALTONE, info); |
| 2285 | } |
| 2286 | isdn_tty_modem_hup(info, 0); |
| 2287 | return 1; |
| 2288 | } |
| 2289 | break; |
| 2290 | case ISDN_STAT_UNLOAD: |
| 2291 | #ifdef ISDN_TTY_STAT_DEBUG |
| 2292 | printk(KERN_DEBUG "tty_STAT_UNLOAD ttyI%d\n", info->line); |
| 2293 | #endif |
| 2294 | for (i = 0; i < ISDN_MAX_CHANNELS; i++) { |
| 2295 | info = &dev->mdm.info[i]; |
| 2296 | if (info->isdn_driver == c->driver) { |
| 2297 | if (info->online) |
| 2298 | isdn_tty_modem_hup(info, 1); |
| 2299 | } |
| 2300 | } |
| 2301 | return 1; |
| 2302 | #ifdef CONFIG_ISDN_TTY_FAX |
| 2303 | case ISDN_STAT_FAXIND: |
| 2304 | if (TTY_IS_ACTIVE(info)) { |
| 2305 | isdn_tty_fax_command(info, c); |
| 2306 | } |
| 2307 | break; |
| 2308 | #endif |
| 2309 | #ifdef CONFIG_ISDN_AUDIO |
| 2310 | case ISDN_STAT_AUDIO: |
| 2311 | if (TTY_IS_ACTIVE(info)) { |
| 2312 | switch(c->parm.num[0]) { |
| 2313 | case ISDN_AUDIO_DTMF: |
| 2314 | if (info->vonline) { |
| 2315 | isdn_audio_put_dle_code(info, |
| 2316 | c->parm.num[1]); |
| 2317 | } |
| 2318 | break; |
| 2319 | } |
| 2320 | } |
| 2321 | break; |
| 2322 | #endif |
| 2323 | } |
| 2324 | } |
| 2325 | return 0; |
| 2326 | } |
| 2327 | |
| 2328 | /********************************************************************* |
| 2329 | Modem-Emulator-Routines |
| 2330 | *********************************************************************/ |
| 2331 | |
| 2332 | #define cmdchar(c) ((c>=' ')&&(c<=0x7f)) |
| 2333 | |
| 2334 | /* |
| 2335 | * Put a message from the AT-emulator into receive-buffer of tty, |
| 2336 | * convert CR, LF, and BS to values in modem-registers 3, 4 and 5. |
| 2337 | */ |
| 2338 | void |
| 2339 | isdn_tty_at_cout(char *msg, modem_info * info) |
| 2340 | { |
| 2341 | struct tty_struct *tty; |
| 2342 | atemu *m = &info->emu; |
| 2343 | char *p; |
| 2344 | char c; |
| 2345 | u_long flags; |
| 2346 | struct sk_buff *skb = NULL; |
| 2347 | char *sp = NULL; |
Adrian Bunk | 1f4d4a8 | 2006-03-25 03:08:06 -0800 | [diff] [blame] | 2348 | int l; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2349 | |
| 2350 | if (!msg) { |
| 2351 | printk(KERN_WARNING "isdn_tty: Null-Message in isdn_tty_at_cout\n"); |
| 2352 | return; |
| 2353 | } |
Adrian Bunk | 1f4d4a8 | 2006-03-25 03:08:06 -0800 | [diff] [blame] | 2354 | |
| 2355 | l = strlen(msg); |
| 2356 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2357 | spin_lock_irqsave(&info->readlock, flags); |
| 2358 | tty = info->tty; |
| 2359 | if ((info->flags & ISDN_ASYNC_CLOSING) || (!tty)) { |
| 2360 | spin_unlock_irqrestore(&info->readlock, flags); |
| 2361 | return; |
| 2362 | } |
| 2363 | |
Alan Cox | 33f0f88 | 2006-01-09 20:54:13 -0800 | [diff] [blame] | 2364 | /* use queue instead of direct, if online and */ |
| 2365 | /* data is in queue or buffer is full */ |
Karsten Keil | 61b9a26 | 2006-02-14 13:53:06 -0800 | [diff] [blame] | 2366 | if (info->online && ((tty_buffer_request_room(tty, l) < l) || |
| 2367 | !skb_queue_empty(&dev->drv[info->isdn_driver]->rpqueue[info->isdn_channel]))) { |
Alan Cox | 33f0f88 | 2006-01-09 20:54:13 -0800 | [diff] [blame] | 2368 | skb = alloc_skb(l, GFP_ATOMIC); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2369 | if (!skb) { |
| 2370 | spin_unlock_irqrestore(&info->readlock, flags); |
| 2371 | return; |
| 2372 | } |
Alan Cox | 33f0f88 | 2006-01-09 20:54:13 -0800 | [diff] [blame] | 2373 | sp = skb_put(skb, l); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2374 | #ifdef CONFIG_ISDN_AUDIO |
| 2375 | ISDN_AUDIO_SKB_DLECOUNT(skb) = 0; |
| 2376 | ISDN_AUDIO_SKB_LOCK(skb) = 0; |
| 2377 | #endif |
| 2378 | } |
| 2379 | |
| 2380 | for (p = msg; *p; p++) { |
| 2381 | switch (*p) { |
| 2382 | case '\r': |
| 2383 | c = m->mdmreg[REG_CR]; |
| 2384 | break; |
| 2385 | case '\n': |
| 2386 | c = m->mdmreg[REG_LF]; |
| 2387 | break; |
| 2388 | case '\b': |
| 2389 | c = m->mdmreg[REG_BS]; |
| 2390 | break; |
| 2391 | default: |
| 2392 | c = *p; |
| 2393 | } |
| 2394 | if (skb) { |
| 2395 | *sp++ = c; |
| 2396 | } else { |
Alan Cox | 33f0f88 | 2006-01-09 20:54:13 -0800 | [diff] [blame] | 2397 | if(tty_insert_flip_char(tty, c, TTY_NORMAL) == 0) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2398 | break; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2399 | } |
| 2400 | } |
| 2401 | if (skb) { |
| 2402 | __skb_queue_tail(&dev->drv[info->isdn_driver]->rpqueue[info->isdn_channel], skb); |
| 2403 | dev->drv[info->isdn_driver]->rcvcount[info->isdn_channel] += skb->len; |
| 2404 | spin_unlock_irqrestore(&info->readlock, flags); |
| 2405 | /* Schedule dequeuing */ |
Alan Cox | 33f0f88 | 2006-01-09 20:54:13 -0800 | [diff] [blame] | 2406 | if (dev->modempoll && info->rcvsched) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2407 | isdn_timer_ctrl(ISDN_TIMER_MODEMREAD, 1); |
| 2408 | |
| 2409 | } else { |
| 2410 | spin_unlock_irqrestore(&info->readlock, flags); |
Alan Cox | 33f0f88 | 2006-01-09 20:54:13 -0800 | [diff] [blame] | 2411 | tty_flip_buffer_push(tty); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2412 | } |
| 2413 | } |
| 2414 | |
| 2415 | /* |
| 2416 | * Perform ATH Hangup |
| 2417 | */ |
| 2418 | static void |
| 2419 | isdn_tty_on_hook(modem_info * info) |
| 2420 | { |
| 2421 | if (info->isdn_channel >= 0) { |
| 2422 | #ifdef ISDN_DEBUG_MODEM_HUP |
| 2423 | printk(KERN_DEBUG "Mhup in isdn_tty_on_hook\n"); |
| 2424 | #endif |
| 2425 | isdn_tty_modem_hup(info, 1); |
| 2426 | } |
| 2427 | } |
| 2428 | |
| 2429 | static void |
| 2430 | isdn_tty_off_hook(void) |
| 2431 | { |
| 2432 | printk(KERN_DEBUG "isdn_tty_off_hook\n"); |
| 2433 | } |
| 2434 | |
| 2435 | #define PLUSWAIT1 (HZ/2) /* 0.5 sec. */ |
| 2436 | #define PLUSWAIT2 (HZ*3/2) /* 1.5 sec */ |
| 2437 | |
| 2438 | /* |
| 2439 | * Check Buffer for Modem-escape-sequence, activate timer-callback to |
| 2440 | * isdn_tty_modem_escape() if sequence found. |
| 2441 | * |
| 2442 | * Parameters: |
| 2443 | * p pointer to databuffer |
| 2444 | * plus escape-character |
| 2445 | * count length of buffer |
| 2446 | * pluscount count of valid escape-characters so far |
| 2447 | * lastplus timestamp of last character |
| 2448 | */ |
| 2449 | static void |
| 2450 | isdn_tty_check_esc(const u_char * p, u_char plus, int count, int *pluscount, |
| 2451 | u_long *lastplus) |
| 2452 | { |
| 2453 | if (plus > 127) |
| 2454 | return; |
| 2455 | if (count > 3) { |
| 2456 | p += count - 3; |
| 2457 | count = 3; |
| 2458 | *pluscount = 0; |
| 2459 | } |
| 2460 | while (count > 0) { |
| 2461 | if (*(p++) == plus) { |
| 2462 | if ((*pluscount)++) { |
| 2463 | /* Time since last '+' > 0.5 sec. ? */ |
| 2464 | if (time_after(jiffies, *lastplus + PLUSWAIT1)) |
| 2465 | *pluscount = 1; |
| 2466 | } else { |
| 2467 | /* Time since last non-'+' < 1.5 sec. ? */ |
| 2468 | if (time_before(jiffies, *lastplus + PLUSWAIT2)) |
| 2469 | *pluscount = 0; |
| 2470 | } |
| 2471 | if ((*pluscount == 3) && (count == 1)) |
| 2472 | isdn_timer_ctrl(ISDN_TIMER_MODEMPLUS, 1); |
| 2473 | if (*pluscount > 3) |
| 2474 | *pluscount = 1; |
| 2475 | } else |
| 2476 | *pluscount = 0; |
| 2477 | *lastplus = jiffies; |
| 2478 | count--; |
| 2479 | } |
| 2480 | } |
| 2481 | |
| 2482 | /* |
| 2483 | * Return result of AT-emulator to tty-receive-buffer, depending on |
| 2484 | * modem-register 12, bit 0 and 1. |
| 2485 | * For CONNECT-messages also switch to online-mode. |
| 2486 | * For RING-message handle auto-ATA if register 0 != 0 |
| 2487 | */ |
| 2488 | |
| 2489 | static void |
| 2490 | isdn_tty_modem_result(int code, modem_info * info) |
| 2491 | { |
| 2492 | atemu *m = &info->emu; |
| 2493 | static char *msg[] = |
| 2494 | {"OK", "CONNECT", "RING", "NO CARRIER", "ERROR", |
| 2495 | "CONNECT 64000", "NO DIALTONE", "BUSY", "NO ANSWER", |
| 2496 | "RINGING", "NO MSN/EAZ", "VCON", "RUNG"}; |
| 2497 | char s[ISDN_MSNLEN+10]; |
| 2498 | |
| 2499 | switch (code) { |
| 2500 | case RESULT_RING: |
| 2501 | m->mdmreg[REG_RINGCNT]++; |
| 2502 | if (m->mdmreg[REG_RINGCNT] == m->mdmreg[REG_RINGATA]) |
| 2503 | /* Automatically accept incoming call */ |
| 2504 | isdn_tty_cmd_ATA(info); |
| 2505 | break; |
| 2506 | case RESULT_NO_CARRIER: |
| 2507 | #ifdef ISDN_DEBUG_MODEM_HUP |
| 2508 | printk(KERN_DEBUG "modem_result: NO CARRIER %d %d\n", |
| 2509 | (info->flags & ISDN_ASYNC_CLOSING), |
| 2510 | (!info->tty)); |
| 2511 | #endif |
| 2512 | m->mdmreg[REG_RINGCNT] = 0; |
| 2513 | del_timer(&info->nc_timer); |
| 2514 | info->ncarrier = 0; |
| 2515 | if ((info->flags & ISDN_ASYNC_CLOSING) || (!info->tty)) { |
| 2516 | return; |
| 2517 | } |
| 2518 | #ifdef CONFIG_ISDN_AUDIO |
| 2519 | if (info->vonline & 1) { |
| 2520 | #ifdef ISDN_DEBUG_MODEM_VOICE |
| 2521 | printk(KERN_DEBUG "res3: send DLE-ETX on ttyI%d\n", |
| 2522 | info->line); |
| 2523 | #endif |
| 2524 | /* voice-recording, add DLE-ETX */ |
| 2525 | isdn_tty_at_cout("\020\003", info); |
| 2526 | } |
| 2527 | if (info->vonline & 2) { |
| 2528 | #ifdef ISDN_DEBUG_MODEM_VOICE |
| 2529 | printk(KERN_DEBUG "res3: send DLE-DC4 on ttyI%d\n", |
| 2530 | info->line); |
| 2531 | #endif |
| 2532 | /* voice-playing, add DLE-DC4 */ |
| 2533 | isdn_tty_at_cout("\020\024", info); |
| 2534 | } |
| 2535 | #endif |
| 2536 | break; |
| 2537 | case RESULT_CONNECT: |
| 2538 | case RESULT_CONNECT64000: |
| 2539 | sprintf(info->last_cause, "0000"); |
| 2540 | if (!info->online) |
| 2541 | info->online = 2; |
| 2542 | break; |
| 2543 | case RESULT_VCON: |
| 2544 | #ifdef ISDN_DEBUG_MODEM_VOICE |
| 2545 | printk(KERN_DEBUG "res3: send VCON on ttyI%d\n", |
| 2546 | info->line); |
| 2547 | #endif |
| 2548 | sprintf(info->last_cause, "0000"); |
| 2549 | if (!info->online) |
| 2550 | info->online = 1; |
| 2551 | break; |
| 2552 | } /* switch(code) */ |
| 2553 | |
| 2554 | if (m->mdmreg[REG_RESP] & BIT_RESP) { |
| 2555 | /* Show results */ |
| 2556 | if (m->mdmreg[REG_RESPNUM] & BIT_RESPNUM) { |
| 2557 | /* Show numeric results only */ |
| 2558 | sprintf(s, "\r\n%d\r\n", code); |
| 2559 | isdn_tty_at_cout(s, info); |
| 2560 | } else { |
| 2561 | if (code == RESULT_RING) { |
| 2562 | /* return if "show RUNG" and ringcounter>1 */ |
| 2563 | if ((m->mdmreg[REG_RUNG] & BIT_RUNG) && |
| 2564 | (m->mdmreg[REG_RINGCNT] > 1)) |
| 2565 | return; |
| 2566 | /* print CID, _before_ _every_ ring */ |
| 2567 | if (!(m->mdmreg[REG_CIDONCE] & BIT_CIDONCE)) { |
| 2568 | isdn_tty_at_cout("\r\nCALLER NUMBER: ", info); |
| 2569 | isdn_tty_at_cout(dev->num[info->drv_index], info); |
| 2570 | if (m->mdmreg[REG_CDN] & BIT_CDN) { |
| 2571 | isdn_tty_at_cout("\r\nCALLED NUMBER: ", info); |
| 2572 | isdn_tty_at_cout(info->emu.cpn, info); |
| 2573 | } |
| 2574 | } |
| 2575 | } |
| 2576 | isdn_tty_at_cout("\r\n", info); |
| 2577 | isdn_tty_at_cout(msg[code], info); |
| 2578 | switch (code) { |
| 2579 | case RESULT_CONNECT: |
| 2580 | switch (m->mdmreg[REG_L2PROT]) { |
| 2581 | case ISDN_PROTO_L2_MODEM: |
| 2582 | isdn_tty_at_cout(" ", info); |
| 2583 | isdn_tty_at_cout(m->connmsg, info); |
| 2584 | break; |
| 2585 | } |
| 2586 | break; |
| 2587 | case RESULT_RING: |
| 2588 | /* Append CPN, if enabled */ |
| 2589 | if ((m->mdmreg[REG_CPN] & BIT_CPN)) { |
| 2590 | sprintf(s, "/%s", m->cpn); |
| 2591 | isdn_tty_at_cout(s, info); |
| 2592 | } |
| 2593 | /* Print CID only once, _after_ 1st RING */ |
| 2594 | if ((m->mdmreg[REG_CIDONCE] & BIT_CIDONCE) && |
| 2595 | (m->mdmreg[REG_RINGCNT] == 1)) { |
| 2596 | isdn_tty_at_cout("\r\n", info); |
| 2597 | isdn_tty_at_cout("CALLER NUMBER: ", info); |
| 2598 | isdn_tty_at_cout(dev->num[info->drv_index], info); |
| 2599 | if (m->mdmreg[REG_CDN] & BIT_CDN) { |
| 2600 | isdn_tty_at_cout("\r\nCALLED NUMBER: ", info); |
| 2601 | isdn_tty_at_cout(info->emu.cpn, info); |
| 2602 | } |
| 2603 | } |
| 2604 | break; |
| 2605 | case RESULT_NO_CARRIER: |
| 2606 | case RESULT_NO_DIALTONE: |
| 2607 | case RESULT_BUSY: |
| 2608 | case RESULT_NO_ANSWER: |
| 2609 | m->mdmreg[REG_RINGCNT] = 0; |
| 2610 | /* Append Cause-Message if enabled */ |
| 2611 | if (m->mdmreg[REG_RESPXT] & BIT_RESPXT) { |
| 2612 | sprintf(s, "/%s", info->last_cause); |
| 2613 | isdn_tty_at_cout(s, info); |
| 2614 | } |
| 2615 | break; |
| 2616 | case RESULT_CONNECT64000: |
| 2617 | /* Append Protocol to CONNECT message */ |
| 2618 | switch (m->mdmreg[REG_L2PROT]) { |
| 2619 | case ISDN_PROTO_L2_X75I: |
| 2620 | case ISDN_PROTO_L2_X75UI: |
| 2621 | case ISDN_PROTO_L2_X75BUI: |
| 2622 | isdn_tty_at_cout("/X.75", info); |
| 2623 | break; |
| 2624 | case ISDN_PROTO_L2_HDLC: |
| 2625 | isdn_tty_at_cout("/HDLC", info); |
| 2626 | break; |
| 2627 | case ISDN_PROTO_L2_V11096: |
| 2628 | isdn_tty_at_cout("/V110/9600", info); |
| 2629 | break; |
| 2630 | case ISDN_PROTO_L2_V11019: |
| 2631 | isdn_tty_at_cout("/V110/19200", info); |
| 2632 | break; |
| 2633 | case ISDN_PROTO_L2_V11038: |
| 2634 | isdn_tty_at_cout("/V110/38400", info); |
| 2635 | break; |
| 2636 | } |
| 2637 | if (m->mdmreg[REG_T70] & BIT_T70) { |
| 2638 | isdn_tty_at_cout("/T.70", info); |
| 2639 | if (m->mdmreg[REG_T70] & BIT_T70_EXT) |
| 2640 | isdn_tty_at_cout("+", info); |
| 2641 | } |
| 2642 | break; |
| 2643 | } |
| 2644 | isdn_tty_at_cout("\r\n", info); |
| 2645 | } |
| 2646 | } |
| 2647 | if (code == RESULT_NO_CARRIER) { |
| 2648 | if ((info->flags & ISDN_ASYNC_CLOSING) || (!info->tty)) { |
| 2649 | return; |
| 2650 | } |
| 2651 | tty_ldisc_flush(info->tty); |
| 2652 | if ((info->flags & ISDN_ASYNC_CHECK_CD) && |
| 2653 | (!((info->flags & ISDN_ASYNC_CALLOUT_ACTIVE) && |
| 2654 | (info->flags & ISDN_ASYNC_CALLOUT_NOHUP)))) { |
| 2655 | tty_hangup(info->tty); |
| 2656 | } |
| 2657 | } |
| 2658 | } |
| 2659 | |
| 2660 | |
| 2661 | /* |
| 2662 | * Display a modem-register-value. |
| 2663 | */ |
| 2664 | static void |
| 2665 | isdn_tty_show_profile(int ridx, modem_info * info) |
| 2666 | { |
| 2667 | char v[6]; |
| 2668 | |
| 2669 | sprintf(v, "\r\n%d", info->emu.mdmreg[ridx]); |
| 2670 | isdn_tty_at_cout(v, info); |
| 2671 | } |
| 2672 | |
| 2673 | /* |
| 2674 | * Get MSN-string from char-pointer, set pointer to end of number |
| 2675 | */ |
| 2676 | static void |
| 2677 | isdn_tty_get_msnstr(char *n, char **p) |
| 2678 | { |
| 2679 | int limit = ISDN_MSNLEN - 1; |
| 2680 | |
| 2681 | while (((*p[0] >= '0' && *p[0] <= '9') || |
| 2682 | /* Why a comma ??? */ |
| 2683 | (*p[0] == ',') || (*p[0] == ':')) && |
| 2684 | (limit--)) |
| 2685 | *n++ = *p[0]++; |
| 2686 | *n = '\0'; |
| 2687 | } |
| 2688 | |
| 2689 | /* |
| 2690 | * Get phone-number from modem-commandbuffer |
| 2691 | */ |
| 2692 | static void |
| 2693 | isdn_tty_getdial(char *p, char *q,int cnt) |
| 2694 | { |
| 2695 | int first = 1; |
| 2696 | int limit = ISDN_MSNLEN - 1; /* MUST match the size of interface var to avoid |
| 2697 | buffer overflow */ |
| 2698 | |
| 2699 | while (strchr(" 0123456789,#.*WPTS-", *p) && *p && --cnt>0) { |
| 2700 | if ((*p >= '0' && *p <= '9') || ((*p == 'S') && first) || |
| 2701 | (*p == '*') || (*p == '#')) { |
| 2702 | *q++ = *p; |
| 2703 | limit--; |
| 2704 | } |
| 2705 | if(!limit) |
| 2706 | break; |
| 2707 | p++; |
| 2708 | first = 0; |
| 2709 | } |
| 2710 | *q = 0; |
| 2711 | } |
| 2712 | |
| 2713 | #define PARSE_ERROR { isdn_tty_modem_result(RESULT_ERROR, info); return; } |
| 2714 | #define PARSE_ERROR1 { isdn_tty_modem_result(RESULT_ERROR, info); return 1; } |
| 2715 | |
| 2716 | static void |
| 2717 | isdn_tty_report(modem_info * info) |
| 2718 | { |
| 2719 | atemu *m = &info->emu; |
| 2720 | char s[80]; |
| 2721 | |
| 2722 | isdn_tty_at_cout("\r\nStatistics of last connection:\r\n\r\n", info); |
| 2723 | sprintf(s, " Remote Number: %s\r\n", info->last_num); |
| 2724 | isdn_tty_at_cout(s, info); |
| 2725 | sprintf(s, " Direction: %s\r\n", info->last_dir ? "outgoing" : "incoming"); |
| 2726 | isdn_tty_at_cout(s, info); |
| 2727 | isdn_tty_at_cout(" Layer-2 Protocol: ", info); |
| 2728 | switch (info->last_l2) { |
| 2729 | case ISDN_PROTO_L2_X75I: |
| 2730 | isdn_tty_at_cout("X.75i", info); |
| 2731 | break; |
| 2732 | case ISDN_PROTO_L2_X75UI: |
| 2733 | isdn_tty_at_cout("X.75ui", info); |
| 2734 | break; |
| 2735 | case ISDN_PROTO_L2_X75BUI: |
| 2736 | isdn_tty_at_cout("X.75bui", info); |
| 2737 | break; |
| 2738 | case ISDN_PROTO_L2_HDLC: |
| 2739 | isdn_tty_at_cout("HDLC", info); |
| 2740 | break; |
| 2741 | case ISDN_PROTO_L2_V11096: |
| 2742 | isdn_tty_at_cout("V.110 9600 Baud", info); |
| 2743 | break; |
| 2744 | case ISDN_PROTO_L2_V11019: |
| 2745 | isdn_tty_at_cout("V.110 19200 Baud", info); |
| 2746 | break; |
| 2747 | case ISDN_PROTO_L2_V11038: |
| 2748 | isdn_tty_at_cout("V.110 38400 Baud", info); |
| 2749 | break; |
| 2750 | case ISDN_PROTO_L2_TRANS: |
| 2751 | isdn_tty_at_cout("transparent", info); |
| 2752 | break; |
| 2753 | case ISDN_PROTO_L2_MODEM: |
| 2754 | isdn_tty_at_cout("modem", info); |
| 2755 | break; |
| 2756 | case ISDN_PROTO_L2_FAX: |
| 2757 | isdn_tty_at_cout("fax", info); |
| 2758 | break; |
| 2759 | default: |
| 2760 | isdn_tty_at_cout("unknown", info); |
| 2761 | break; |
| 2762 | } |
| 2763 | if (m->mdmreg[REG_T70] & BIT_T70) { |
| 2764 | isdn_tty_at_cout("/T.70", info); |
| 2765 | if (m->mdmreg[REG_T70] & BIT_T70_EXT) |
| 2766 | isdn_tty_at_cout("+", info); |
| 2767 | } |
| 2768 | isdn_tty_at_cout("\r\n", info); |
| 2769 | isdn_tty_at_cout(" Service: ", info); |
| 2770 | switch (info->last_si) { |
| 2771 | case 1: |
| 2772 | isdn_tty_at_cout("audio\r\n", info); |
| 2773 | break; |
| 2774 | case 5: |
| 2775 | isdn_tty_at_cout("btx\r\n", info); |
| 2776 | break; |
| 2777 | case 7: |
| 2778 | isdn_tty_at_cout("data\r\n", info); |
| 2779 | break; |
| 2780 | default: |
| 2781 | sprintf(s, "%d\r\n", info->last_si); |
| 2782 | isdn_tty_at_cout(s, info); |
| 2783 | break; |
| 2784 | } |
| 2785 | sprintf(s, " Hangup location: %s\r\n", info->last_lhup ? "local" : "remote"); |
| 2786 | isdn_tty_at_cout(s, info); |
| 2787 | sprintf(s, " Last cause: %s\r\n", info->last_cause); |
| 2788 | isdn_tty_at_cout(s, info); |
| 2789 | } |
| 2790 | |
| 2791 | /* |
| 2792 | * Parse AT&.. commands. |
| 2793 | */ |
| 2794 | static int |
| 2795 | isdn_tty_cmd_ATand(char **p, modem_info * info) |
| 2796 | { |
| 2797 | atemu *m = &info->emu; |
| 2798 | int i; |
| 2799 | char rb[100]; |
| 2800 | |
| 2801 | #define MAXRB (sizeof(rb) - 1) |
| 2802 | |
| 2803 | switch (*p[0]) { |
| 2804 | case 'B': |
| 2805 | /* &B - Set Buffersize */ |
| 2806 | p[0]++; |
| 2807 | i = isdn_getnum(p); |
| 2808 | if ((i < 0) || (i > ISDN_SERIAL_XMIT_MAX)) |
| 2809 | PARSE_ERROR1; |
| 2810 | #ifdef CONFIG_ISDN_AUDIO |
| 2811 | if ((m->mdmreg[REG_SI1] & 1) && (i > VBUF)) |
| 2812 | PARSE_ERROR1; |
| 2813 | #endif |
| 2814 | m->mdmreg[REG_PSIZE] = i / 16; |
| 2815 | info->xmit_size = m->mdmreg[REG_PSIZE] * 16; |
| 2816 | switch (m->mdmreg[REG_L2PROT]) { |
| 2817 | case ISDN_PROTO_L2_V11096: |
| 2818 | case ISDN_PROTO_L2_V11019: |
| 2819 | case ISDN_PROTO_L2_V11038: |
| 2820 | info->xmit_size /= 10; |
| 2821 | } |
| 2822 | break; |
| 2823 | case 'C': |
| 2824 | /* &C - DCD Status */ |
| 2825 | p[0]++; |
| 2826 | switch (isdn_getnum(p)) { |
| 2827 | case 0: |
| 2828 | m->mdmreg[REG_DCD] &= ~BIT_DCD; |
| 2829 | break; |
| 2830 | case 1: |
| 2831 | m->mdmreg[REG_DCD] |= BIT_DCD; |
| 2832 | break; |
| 2833 | default: |
| 2834 | PARSE_ERROR1 |
| 2835 | } |
| 2836 | break; |
| 2837 | case 'D': |
| 2838 | /* &D - Set DTR-Low-behavior */ |
| 2839 | p[0]++; |
| 2840 | switch (isdn_getnum(p)) { |
| 2841 | case 0: |
| 2842 | m->mdmreg[REG_DTRHUP] &= ~BIT_DTRHUP; |
| 2843 | m->mdmreg[REG_DTRR] &= ~BIT_DTRR; |
| 2844 | break; |
| 2845 | case 2: |
| 2846 | m->mdmreg[REG_DTRHUP] |= BIT_DTRHUP; |
| 2847 | m->mdmreg[REG_DTRR] &= ~BIT_DTRR; |
| 2848 | break; |
| 2849 | case 3: |
| 2850 | m->mdmreg[REG_DTRHUP] |= BIT_DTRHUP; |
| 2851 | m->mdmreg[REG_DTRR] |= BIT_DTRR; |
| 2852 | break; |
| 2853 | default: |
| 2854 | PARSE_ERROR1 |
| 2855 | } |
| 2856 | break; |
| 2857 | case 'E': |
| 2858 | /* &E -Set EAZ/MSN */ |
| 2859 | p[0]++; |
| 2860 | isdn_tty_get_msnstr(m->msn, p); |
| 2861 | break; |
| 2862 | case 'F': |
| 2863 | /* &F -Set Factory-Defaults */ |
| 2864 | p[0]++; |
| 2865 | if (info->msr & UART_MSR_DCD) |
| 2866 | PARSE_ERROR1; |
| 2867 | isdn_tty_reset_profile(m); |
| 2868 | isdn_tty_modem_reset_regs(info, 1); |
| 2869 | break; |
| 2870 | #ifdef DUMMY_HAYES_AT |
| 2871 | case 'K': |
| 2872 | /* only for be compilant with common scripts */ |
| 2873 | /* &K Flowcontrol - no function */ |
| 2874 | p[0]++; |
| 2875 | isdn_getnum(p); |
| 2876 | break; |
| 2877 | #endif |
| 2878 | case 'L': |
| 2879 | /* &L -Set Numbers to listen on */ |
| 2880 | p[0]++; |
| 2881 | i = 0; |
| 2882 | while (*p[0] && (strchr("0123456789,-*[]?;", *p[0])) && |
| 2883 | (i < ISDN_LMSNLEN)) |
| 2884 | m->lmsn[i++] = *p[0]++; |
| 2885 | m->lmsn[i] = '\0'; |
| 2886 | break; |
| 2887 | case 'R': |
| 2888 | /* &R - Set V.110 bitrate adaption */ |
| 2889 | p[0]++; |
| 2890 | i = isdn_getnum(p); |
| 2891 | switch (i) { |
| 2892 | case 0: |
| 2893 | /* Switch off V.110, back to X.75 */ |
| 2894 | m->mdmreg[REG_L2PROT] = ISDN_PROTO_L2_X75I; |
| 2895 | m->mdmreg[REG_SI2] = 0; |
| 2896 | info->xmit_size = m->mdmreg[REG_PSIZE] * 16; |
| 2897 | break; |
| 2898 | case 9600: |
| 2899 | m->mdmreg[REG_L2PROT] = ISDN_PROTO_L2_V11096; |
| 2900 | m->mdmreg[REG_SI2] = 197; |
| 2901 | info->xmit_size = m->mdmreg[REG_PSIZE] * 16 / 10; |
| 2902 | break; |
| 2903 | case 19200: |
| 2904 | m->mdmreg[REG_L2PROT] = ISDN_PROTO_L2_V11019; |
| 2905 | m->mdmreg[REG_SI2] = 199; |
| 2906 | info->xmit_size = m->mdmreg[REG_PSIZE] * 16 / 10; |
| 2907 | break; |
| 2908 | case 38400: |
| 2909 | m->mdmreg[REG_L2PROT] = ISDN_PROTO_L2_V11038; |
| 2910 | m->mdmreg[REG_SI2] = 198; /* no existing standard for this */ |
| 2911 | info->xmit_size = m->mdmreg[REG_PSIZE] * 16 / 10; |
| 2912 | break; |
| 2913 | default: |
| 2914 | PARSE_ERROR1; |
| 2915 | } |
| 2916 | /* Switch off T.70 */ |
| 2917 | m->mdmreg[REG_T70] &= ~(BIT_T70 | BIT_T70_EXT); |
| 2918 | /* Set Service 7 */ |
| 2919 | m->mdmreg[REG_SI1] |= 4; |
| 2920 | break; |
| 2921 | case 'S': |
| 2922 | /* &S - Set Windowsize */ |
| 2923 | p[0]++; |
| 2924 | i = isdn_getnum(p); |
| 2925 | if ((i > 0) && (i < 9)) |
| 2926 | m->mdmreg[REG_WSIZE] = i; |
| 2927 | else |
| 2928 | PARSE_ERROR1; |
| 2929 | break; |
| 2930 | case 'V': |
| 2931 | /* &V - Show registers */ |
| 2932 | p[0]++; |
| 2933 | isdn_tty_at_cout("\r\n", info); |
| 2934 | for (i = 0; i < ISDN_MODEM_NUMREG; i++) { |
| 2935 | sprintf(rb, "S%02d=%03d%s", i, |
| 2936 | m->mdmreg[i], ((i + 1) % 10) ? " " : "\r\n"); |
| 2937 | isdn_tty_at_cout(rb, info); |
| 2938 | } |
| 2939 | sprintf(rb, "\r\nEAZ/MSN: %.50s\r\n", |
| 2940 | strlen(m->msn) ? m->msn : "None"); |
| 2941 | isdn_tty_at_cout(rb, info); |
| 2942 | if (strlen(m->lmsn)) { |
| 2943 | isdn_tty_at_cout("\r\nListen: ", info); |
| 2944 | isdn_tty_at_cout(m->lmsn, info); |
| 2945 | isdn_tty_at_cout("\r\n", info); |
| 2946 | } |
| 2947 | break; |
| 2948 | case 'W': |
| 2949 | /* &W - Write Profile */ |
| 2950 | p[0]++; |
| 2951 | switch (*p[0]) { |
| 2952 | case '0': |
| 2953 | p[0]++; |
| 2954 | modem_write_profile(m); |
| 2955 | break; |
| 2956 | default: |
| 2957 | PARSE_ERROR1; |
| 2958 | } |
| 2959 | break; |
| 2960 | case 'X': |
| 2961 | /* &X - Switch to BTX-Mode and T.70 */ |
| 2962 | p[0]++; |
| 2963 | switch (isdn_getnum(p)) { |
| 2964 | case 0: |
| 2965 | m->mdmreg[REG_T70] &= ~(BIT_T70 | BIT_T70_EXT); |
| 2966 | info->xmit_size = m->mdmreg[REG_PSIZE] * 16; |
| 2967 | break; |
| 2968 | case 1: |
| 2969 | m->mdmreg[REG_T70] |= BIT_T70; |
| 2970 | m->mdmreg[REG_T70] &= ~BIT_T70_EXT; |
| 2971 | m->mdmreg[REG_L2PROT] = ISDN_PROTO_L2_X75I; |
| 2972 | info->xmit_size = 112; |
| 2973 | m->mdmreg[REG_SI1] = 4; |
| 2974 | m->mdmreg[REG_SI2] = 0; |
| 2975 | break; |
| 2976 | case 2: |
| 2977 | m->mdmreg[REG_T70] |= (BIT_T70 | BIT_T70_EXT); |
| 2978 | m->mdmreg[REG_L2PROT] = ISDN_PROTO_L2_X75I; |
| 2979 | info->xmit_size = 112; |
| 2980 | m->mdmreg[REG_SI1] = 4; |
| 2981 | m->mdmreg[REG_SI2] = 0; |
| 2982 | break; |
| 2983 | default: |
| 2984 | PARSE_ERROR1; |
| 2985 | } |
| 2986 | break; |
| 2987 | default: |
| 2988 | PARSE_ERROR1; |
| 2989 | } |
| 2990 | return 0; |
| 2991 | } |
| 2992 | |
| 2993 | static int |
| 2994 | isdn_tty_check_ats(int mreg, int mval, modem_info * info, atemu * m) |
| 2995 | { |
| 2996 | /* Some plausibility checks */ |
| 2997 | switch (mreg) { |
| 2998 | case REG_L2PROT: |
| 2999 | if (mval > ISDN_PROTO_L2_MAX) |
| 3000 | return 1; |
| 3001 | break; |
| 3002 | case REG_PSIZE: |
| 3003 | if ((mval * 16) > ISDN_SERIAL_XMIT_MAX) |
| 3004 | return 1; |
| 3005 | #ifdef CONFIG_ISDN_AUDIO |
| 3006 | if ((m->mdmreg[REG_SI1] & 1) && (mval > VBUFX)) |
| 3007 | return 1; |
| 3008 | #endif |
| 3009 | info->xmit_size = mval * 16; |
| 3010 | switch (m->mdmreg[REG_L2PROT]) { |
| 3011 | case ISDN_PROTO_L2_V11096: |
| 3012 | case ISDN_PROTO_L2_V11019: |
| 3013 | case ISDN_PROTO_L2_V11038: |
| 3014 | info->xmit_size /= 10; |
| 3015 | } |
| 3016 | break; |
| 3017 | case REG_SI1I: |
| 3018 | case REG_PLAN: |
| 3019 | case REG_SCREEN: |
| 3020 | /* readonly registers */ |
| 3021 | return 1; |
| 3022 | } |
| 3023 | return 0; |
| 3024 | } |
| 3025 | |
| 3026 | /* |
| 3027 | * Perform ATS command |
| 3028 | */ |
| 3029 | static int |
| 3030 | isdn_tty_cmd_ATS(char **p, modem_info * info) |
| 3031 | { |
| 3032 | atemu *m = &info->emu; |
| 3033 | int bitpos; |
| 3034 | int mreg; |
| 3035 | int mval; |
| 3036 | int bval; |
| 3037 | |
| 3038 | mreg = isdn_getnum(p); |
| 3039 | if (mreg < 0 || mreg >= ISDN_MODEM_NUMREG) |
| 3040 | PARSE_ERROR1; |
| 3041 | switch (*p[0]) { |
| 3042 | case '=': |
| 3043 | p[0]++; |
| 3044 | mval = isdn_getnum(p); |
| 3045 | if (mval < 0 || mval > 255) |
| 3046 | PARSE_ERROR1; |
| 3047 | if (isdn_tty_check_ats(mreg, mval, info, m)) |
| 3048 | PARSE_ERROR1; |
| 3049 | m->mdmreg[mreg] = mval; |
| 3050 | break; |
| 3051 | case '.': |
| 3052 | /* Set/Clear a single bit */ |
| 3053 | p[0]++; |
| 3054 | bitpos = isdn_getnum(p); |
| 3055 | if ((bitpos < 0) || (bitpos > 7)) |
| 3056 | PARSE_ERROR1; |
| 3057 | switch (*p[0]) { |
| 3058 | case '=': |
| 3059 | p[0]++; |
| 3060 | bval = isdn_getnum(p); |
| 3061 | if (bval < 0 || bval > 1) |
| 3062 | PARSE_ERROR1; |
| 3063 | if (bval) |
| 3064 | mval = m->mdmreg[mreg] | (1 << bitpos); |
| 3065 | else |
| 3066 | mval = m->mdmreg[mreg] & ~(1 << bitpos); |
| 3067 | if (isdn_tty_check_ats(mreg, mval, info, m)) |
| 3068 | PARSE_ERROR1; |
| 3069 | m->mdmreg[mreg] = mval; |
| 3070 | break; |
| 3071 | case '?': |
| 3072 | p[0]++; |
| 3073 | isdn_tty_at_cout("\r\n", info); |
| 3074 | isdn_tty_at_cout((m->mdmreg[mreg] & (1 << bitpos)) ? "1" : "0", |
| 3075 | info); |
| 3076 | break; |
| 3077 | default: |
| 3078 | PARSE_ERROR1; |
| 3079 | } |
| 3080 | break; |
| 3081 | case '?': |
| 3082 | p[0]++; |
| 3083 | isdn_tty_show_profile(mreg, info); |
| 3084 | break; |
| 3085 | default: |
| 3086 | PARSE_ERROR1; |
| 3087 | break; |
| 3088 | } |
| 3089 | return 0; |
| 3090 | } |
| 3091 | |
| 3092 | /* |
| 3093 | * Perform ATA command |
| 3094 | */ |
| 3095 | static void |
| 3096 | isdn_tty_cmd_ATA(modem_info * info) |
| 3097 | { |
| 3098 | atemu *m = &info->emu; |
| 3099 | isdn_ctrl cmd; |
| 3100 | int l2; |
| 3101 | |
| 3102 | if (info->msr & UART_MSR_RI) { |
| 3103 | /* Accept incoming call */ |
| 3104 | info->last_dir = 0; |
| 3105 | strcpy(info->last_num, dev->num[info->drv_index]); |
| 3106 | m->mdmreg[REG_RINGCNT] = 0; |
| 3107 | info->msr &= ~UART_MSR_RI; |
| 3108 | l2 = m->mdmreg[REG_L2PROT]; |
| 3109 | #ifdef CONFIG_ISDN_AUDIO |
| 3110 | /* If more than one bit set in reg18, autoselect Layer2 */ |
| 3111 | if ((m->mdmreg[REG_SI1] & m->mdmreg[REG_SI1I]) != m->mdmreg[REG_SI1]) { |
| 3112 | if (m->mdmreg[REG_SI1I] == 1) { |
| 3113 | if ((l2 != ISDN_PROTO_L2_MODEM) && (l2 != ISDN_PROTO_L2_FAX)) |
| 3114 | l2 = ISDN_PROTO_L2_TRANS; |
| 3115 | } else |
| 3116 | l2 = ISDN_PROTO_L2_X75I; |
| 3117 | } |
| 3118 | #endif |
| 3119 | cmd.driver = info->isdn_driver; |
| 3120 | cmd.command = ISDN_CMD_SETL2; |
| 3121 | cmd.arg = info->isdn_channel + (l2 << 8); |
| 3122 | info->last_l2 = l2; |
| 3123 | isdn_command(&cmd); |
| 3124 | cmd.driver = info->isdn_driver; |
| 3125 | cmd.command = ISDN_CMD_SETL3; |
| 3126 | cmd.arg = info->isdn_channel + (m->mdmreg[REG_L3PROT] << 8); |
| 3127 | #ifdef CONFIG_ISDN_TTY_FAX |
| 3128 | if (l2 == ISDN_PROTO_L2_FAX) { |
| 3129 | cmd.parm.fax = info->fax; |
| 3130 | info->fax->direction = ISDN_TTY_FAX_CONN_IN; |
| 3131 | } |
| 3132 | #endif |
| 3133 | isdn_command(&cmd); |
| 3134 | cmd.driver = info->isdn_driver; |
| 3135 | cmd.arg = info->isdn_channel; |
| 3136 | cmd.command = ISDN_CMD_ACCEPTD; |
| 3137 | info->dialing = 16; |
| 3138 | info->emu.carrierwait = 0; |
| 3139 | isdn_command(&cmd); |
| 3140 | isdn_timer_ctrl(ISDN_TIMER_CARRIER, 1); |
| 3141 | } else |
| 3142 | isdn_tty_modem_result(RESULT_NO_ANSWER, info); |
| 3143 | } |
| 3144 | |
| 3145 | #ifdef CONFIG_ISDN_AUDIO |
| 3146 | /* |
| 3147 | * Parse AT+F.. commands |
| 3148 | */ |
| 3149 | static int |
| 3150 | isdn_tty_cmd_PLUSF(char **p, modem_info * info) |
| 3151 | { |
| 3152 | atemu *m = &info->emu; |
| 3153 | char rs[20]; |
| 3154 | |
| 3155 | if (!strncmp(p[0], "CLASS", 5)) { |
| 3156 | p[0] += 5; |
| 3157 | switch (*p[0]) { |
| 3158 | case '?': |
| 3159 | p[0]++; |
| 3160 | sprintf(rs, "\r\n%d", |
| 3161 | (m->mdmreg[REG_SI1] & 1) ? 8 : 0); |
| 3162 | #ifdef CONFIG_ISDN_TTY_FAX |
| 3163 | if (TTY_IS_FCLASS2(info)) |
| 3164 | sprintf(rs, "\r\n2"); |
| 3165 | else if (TTY_IS_FCLASS1(info)) |
| 3166 | sprintf(rs, "\r\n1"); |
| 3167 | #endif |
| 3168 | isdn_tty_at_cout(rs, info); |
| 3169 | break; |
| 3170 | case '=': |
| 3171 | p[0]++; |
| 3172 | switch (*p[0]) { |
| 3173 | case '0': |
| 3174 | p[0]++; |
| 3175 | m->mdmreg[REG_L2PROT] = ISDN_PROTO_L2_X75I; |
| 3176 | m->mdmreg[REG_L3PROT] = ISDN_PROTO_L3_TRANS; |
| 3177 | m->mdmreg[REG_SI1] = 4; |
| 3178 | info->xmit_size = |
| 3179 | m->mdmreg[REG_PSIZE] * 16; |
| 3180 | break; |
| 3181 | #ifdef CONFIG_ISDN_TTY_FAX |
| 3182 | case '1': |
| 3183 | p[0]++; |
| 3184 | if (!(dev->global_features & |
| 3185 | ISDN_FEATURE_L3_FCLASS1)) |
| 3186 | PARSE_ERROR1; |
| 3187 | m->mdmreg[REG_SI1] = 1; |
| 3188 | m->mdmreg[REG_L2PROT] = ISDN_PROTO_L2_FAX; |
| 3189 | m->mdmreg[REG_L3PROT] = ISDN_PROTO_L3_FCLASS1; |
| 3190 | info->xmit_size = |
| 3191 | m->mdmreg[REG_PSIZE] * 16; |
| 3192 | break; |
| 3193 | case '2': |
| 3194 | p[0]++; |
| 3195 | if (!(dev->global_features & |
| 3196 | ISDN_FEATURE_L3_FCLASS2)) |
| 3197 | PARSE_ERROR1; |
| 3198 | m->mdmreg[REG_SI1] = 1; |
| 3199 | m->mdmreg[REG_L2PROT] = ISDN_PROTO_L2_FAX; |
| 3200 | m->mdmreg[REG_L3PROT] = ISDN_PROTO_L3_FCLASS2; |
| 3201 | info->xmit_size = |
| 3202 | m->mdmreg[REG_PSIZE] * 16; |
| 3203 | break; |
| 3204 | #endif |
| 3205 | case '8': |
| 3206 | p[0]++; |
| 3207 | /* L2 will change on dialout with si=1 */ |
| 3208 | m->mdmreg[REG_L2PROT] = ISDN_PROTO_L2_X75I; |
| 3209 | m->mdmreg[REG_L3PROT] = ISDN_PROTO_L3_TRANS; |
| 3210 | m->mdmreg[REG_SI1] = 5; |
| 3211 | info->xmit_size = VBUF; |
| 3212 | break; |
| 3213 | case '?': |
| 3214 | p[0]++; |
| 3215 | strcpy(rs, "\r\n0,"); |
| 3216 | #ifdef CONFIG_ISDN_TTY_FAX |
| 3217 | if (dev->global_features & |
| 3218 | ISDN_FEATURE_L3_FCLASS1) |
| 3219 | strcat(rs, "1,"); |
| 3220 | if (dev->global_features & |
| 3221 | ISDN_FEATURE_L3_FCLASS2) |
| 3222 | strcat(rs, "2,"); |
| 3223 | #endif |
| 3224 | strcat(rs, "8"); |
| 3225 | isdn_tty_at_cout(rs, info); |
| 3226 | break; |
| 3227 | default: |
| 3228 | PARSE_ERROR1; |
| 3229 | } |
| 3230 | break; |
| 3231 | default: |
| 3232 | PARSE_ERROR1; |
| 3233 | } |
| 3234 | return 0; |
| 3235 | } |
| 3236 | #ifdef CONFIG_ISDN_TTY_FAX |
| 3237 | return (isdn_tty_cmd_PLUSF_FAX(p, info)); |
| 3238 | #else |
| 3239 | PARSE_ERROR1; |
| 3240 | #endif |
| 3241 | } |
| 3242 | |
| 3243 | /* |
| 3244 | * Parse AT+V.. commands |
| 3245 | */ |
| 3246 | static int |
| 3247 | isdn_tty_cmd_PLUSV(char **p, modem_info * info) |
| 3248 | { |
| 3249 | atemu *m = &info->emu; |
| 3250 | isdn_ctrl cmd; |
| 3251 | static char *vcmd[] = |
| 3252 | {"NH", "IP", "LS", "RX", "SD", "SM", "TX", "DD", NULL}; |
| 3253 | int i; |
| 3254 | int par1; |
| 3255 | int par2; |
| 3256 | char rs[20]; |
| 3257 | |
| 3258 | i = 0; |
| 3259 | while (vcmd[i]) { |
| 3260 | if (!strncmp(vcmd[i], p[0], 2)) { |
| 3261 | p[0] += 2; |
| 3262 | break; |
| 3263 | } |
| 3264 | i++; |
| 3265 | } |
| 3266 | switch (i) { |
| 3267 | case 0: |
| 3268 | /* AT+VNH - Auto hangup feature */ |
| 3269 | switch (*p[0]) { |
| 3270 | case '?': |
| 3271 | p[0]++; |
| 3272 | isdn_tty_at_cout("\r\n1", info); |
| 3273 | break; |
| 3274 | case '=': |
| 3275 | p[0]++; |
| 3276 | switch (*p[0]) { |
| 3277 | case '1': |
| 3278 | p[0]++; |
| 3279 | break; |
| 3280 | case '?': |
| 3281 | p[0]++; |
| 3282 | isdn_tty_at_cout("\r\n1", info); |
| 3283 | break; |
| 3284 | default: |
| 3285 | PARSE_ERROR1; |
| 3286 | } |
| 3287 | break; |
| 3288 | default: |
| 3289 | PARSE_ERROR1; |
| 3290 | } |
| 3291 | break; |
| 3292 | case 1: |
| 3293 | /* AT+VIP - Reset all voice parameters */ |
| 3294 | isdn_tty_modem_reset_vpar(m); |
| 3295 | break; |
| 3296 | case 2: |
| 3297 | /* AT+VLS - Select device, accept incoming call */ |
| 3298 | switch (*p[0]) { |
| 3299 | case '?': |
| 3300 | p[0]++; |
| 3301 | sprintf(rs, "\r\n%d", m->vpar[0]); |
| 3302 | isdn_tty_at_cout(rs, info); |
| 3303 | break; |
| 3304 | case '=': |
| 3305 | p[0]++; |
| 3306 | switch (*p[0]) { |
| 3307 | case '0': |
| 3308 | p[0]++; |
| 3309 | m->vpar[0] = 0; |
| 3310 | break; |
| 3311 | case '2': |
| 3312 | p[0]++; |
| 3313 | m->vpar[0] = 2; |
| 3314 | break; |
| 3315 | case '?': |
| 3316 | p[0]++; |
| 3317 | isdn_tty_at_cout("\r\n0,2", info); |
| 3318 | break; |
| 3319 | default: |
| 3320 | PARSE_ERROR1; |
| 3321 | } |
| 3322 | break; |
| 3323 | default: |
| 3324 | PARSE_ERROR1; |
| 3325 | } |
| 3326 | break; |
| 3327 | case 3: |
| 3328 | /* AT+VRX - Start recording */ |
| 3329 | if (!m->vpar[0]) |
| 3330 | PARSE_ERROR1; |
| 3331 | if (info->online != 1) { |
| 3332 | isdn_tty_modem_result(RESULT_NO_ANSWER, info); |
| 3333 | return 1; |
| 3334 | } |
| 3335 | info->dtmf_state = isdn_audio_dtmf_init(info->dtmf_state); |
| 3336 | if (!info->dtmf_state) { |
| 3337 | printk(KERN_WARNING "isdn_tty: Couldn't malloc dtmf state\n"); |
| 3338 | PARSE_ERROR1; |
| 3339 | } |
| 3340 | info->silence_state = isdn_audio_silence_init(info->silence_state); |
| 3341 | if (!info->silence_state) { |
| 3342 | printk(KERN_WARNING "isdn_tty: Couldn't malloc silence state\n"); |
| 3343 | PARSE_ERROR1; |
| 3344 | } |
| 3345 | if (m->vpar[3] < 5) { |
| 3346 | info->adpcmr = isdn_audio_adpcm_init(info->adpcmr, m->vpar[3]); |
| 3347 | if (!info->adpcmr) { |
| 3348 | printk(KERN_WARNING "isdn_tty: Couldn't malloc adpcm state\n"); |
| 3349 | PARSE_ERROR1; |
| 3350 | } |
| 3351 | } |
| 3352 | #ifdef ISDN_DEBUG_AT |
| 3353 | printk(KERN_DEBUG "AT: +VRX\n"); |
| 3354 | #endif |
| 3355 | info->vonline |= 1; |
| 3356 | isdn_tty_modem_result(RESULT_CONNECT, info); |
| 3357 | return 0; |
| 3358 | break; |
| 3359 | case 4: |
| 3360 | /* AT+VSD - Silence detection */ |
| 3361 | switch (*p[0]) { |
| 3362 | case '?': |
| 3363 | p[0]++; |
| 3364 | sprintf(rs, "\r\n<%d>,<%d>", |
| 3365 | m->vpar[1], |
| 3366 | m->vpar[2]); |
| 3367 | isdn_tty_at_cout(rs, info); |
| 3368 | break; |
| 3369 | case '=': |
| 3370 | p[0]++; |
| 3371 | if ((*p[0]>='0') && (*p[0]<='9')) { |
| 3372 | par1 = isdn_getnum(p); |
| 3373 | if ((par1 < 0) || (par1 > 31)) |
| 3374 | PARSE_ERROR1; |
| 3375 | if (*p[0] != ',') |
| 3376 | PARSE_ERROR1; |
| 3377 | p[0]++; |
| 3378 | par2 = isdn_getnum(p); |
| 3379 | if ((par2 < 0) || (par2 > 255)) |
| 3380 | PARSE_ERROR1; |
| 3381 | m->vpar[1] = par1; |
| 3382 | m->vpar[2] = par2; |
| 3383 | break; |
| 3384 | } else |
| 3385 | if (*p[0] == '?') { |
| 3386 | p[0]++; |
| 3387 | isdn_tty_at_cout("\r\n<0-31>,<0-255>", |
| 3388 | info); |
| 3389 | break; |
| 3390 | } else |
| 3391 | PARSE_ERROR1; |
| 3392 | break; |
| 3393 | default: |
| 3394 | PARSE_ERROR1; |
| 3395 | } |
| 3396 | break; |
| 3397 | case 5: |
| 3398 | /* AT+VSM - Select compression */ |
| 3399 | switch (*p[0]) { |
| 3400 | case '?': |
| 3401 | p[0]++; |
| 3402 | sprintf(rs, "\r\n<%d>,<%d><8000>", |
| 3403 | m->vpar[3], |
| 3404 | m->vpar[1]); |
| 3405 | isdn_tty_at_cout(rs, info); |
| 3406 | break; |
| 3407 | case '=': |
| 3408 | p[0]++; |
| 3409 | switch (*p[0]) { |
| 3410 | case '2': |
| 3411 | case '3': |
| 3412 | case '4': |
| 3413 | case '5': |
| 3414 | case '6': |
| 3415 | par1 = isdn_getnum(p); |
| 3416 | if ((par1 < 2) || (par1 > 6)) |
| 3417 | PARSE_ERROR1; |
| 3418 | m->vpar[3] = par1; |
| 3419 | break; |
| 3420 | case '?': |
| 3421 | p[0]++; |
| 3422 | isdn_tty_at_cout("\r\n2;ADPCM;2;0;(8000)\r\n", |
| 3423 | info); |
| 3424 | isdn_tty_at_cout("3;ADPCM;3;0;(8000)\r\n", |
| 3425 | info); |
| 3426 | isdn_tty_at_cout("4;ADPCM;4;0;(8000)\r\n", |
| 3427 | info); |
| 3428 | isdn_tty_at_cout("5;ALAW;8;0;(8000)\r\n", |
| 3429 | info); |
| 3430 | isdn_tty_at_cout("6;ULAW;8;0;(8000)\r\n", |
| 3431 | info); |
| 3432 | break; |
| 3433 | default: |
| 3434 | PARSE_ERROR1; |
| 3435 | } |
| 3436 | break; |
| 3437 | default: |
| 3438 | PARSE_ERROR1; |
| 3439 | } |
| 3440 | break; |
| 3441 | case 6: |
| 3442 | /* AT+VTX - Start sending */ |
| 3443 | if (!m->vpar[0]) |
| 3444 | PARSE_ERROR1; |
| 3445 | if (info->online != 1) { |
| 3446 | isdn_tty_modem_result(RESULT_NO_ANSWER, info); |
| 3447 | return 1; |
| 3448 | } |
| 3449 | info->dtmf_state = isdn_audio_dtmf_init(info->dtmf_state); |
| 3450 | if (!info->dtmf_state) { |
| 3451 | printk(KERN_WARNING "isdn_tty: Couldn't malloc dtmf state\n"); |
| 3452 | PARSE_ERROR1; |
| 3453 | } |
| 3454 | if (m->vpar[3] < 5) { |
| 3455 | info->adpcms = isdn_audio_adpcm_init(info->adpcms, m->vpar[3]); |
| 3456 | if (!info->adpcms) { |
| 3457 | printk(KERN_WARNING "isdn_tty: Couldn't malloc adpcm state\n"); |
| 3458 | PARSE_ERROR1; |
| 3459 | } |
| 3460 | } |
| 3461 | #ifdef ISDN_DEBUG_AT |
| 3462 | printk(KERN_DEBUG "AT: +VTX\n"); |
| 3463 | #endif |
| 3464 | m->lastDLE = 0; |
| 3465 | info->vonline |= 2; |
| 3466 | isdn_tty_modem_result(RESULT_CONNECT, info); |
| 3467 | return 0; |
| 3468 | break; |
| 3469 | case 7: |
| 3470 | /* AT+VDD - DTMF detection */ |
| 3471 | switch (*p[0]) { |
| 3472 | case '?': |
| 3473 | p[0]++; |
| 3474 | sprintf(rs, "\r\n<%d>,<%d>", |
| 3475 | m->vpar[4], |
| 3476 | m->vpar[5]); |
| 3477 | isdn_tty_at_cout(rs, info); |
| 3478 | break; |
| 3479 | case '=': |
| 3480 | p[0]++; |
| 3481 | if ((*p[0]>='0') && (*p[0]<='9')) { |
| 3482 | if (info->online != 1) |
| 3483 | PARSE_ERROR1; |
| 3484 | par1 = isdn_getnum(p); |
| 3485 | if ((par1 < 0) || (par1 > 15)) |
| 3486 | PARSE_ERROR1; |
| 3487 | if (*p[0] != ',') |
| 3488 | PARSE_ERROR1; |
| 3489 | p[0]++; |
| 3490 | par2 = isdn_getnum(p); |
| 3491 | if ((par2 < 0) || (par2 > 255)) |
| 3492 | PARSE_ERROR1; |
| 3493 | m->vpar[4] = par1; |
| 3494 | m->vpar[5] = par2; |
| 3495 | cmd.driver = info->isdn_driver; |
| 3496 | cmd.command = ISDN_CMD_AUDIO; |
| 3497 | cmd.arg = info->isdn_channel + (ISDN_AUDIO_SETDD << 8); |
| 3498 | cmd.parm.num[0] = par1; |
| 3499 | cmd.parm.num[1] = par2; |
| 3500 | isdn_command(&cmd); |
| 3501 | break; |
| 3502 | } else |
| 3503 | if (*p[0] == '?') { |
| 3504 | p[0]++; |
| 3505 | isdn_tty_at_cout("\r\n<0-15>,<0-255>", |
| 3506 | info); |
| 3507 | break; |
| 3508 | } else |
| 3509 | PARSE_ERROR1; |
| 3510 | break; |
| 3511 | default: |
| 3512 | PARSE_ERROR1; |
| 3513 | } |
| 3514 | break; |
| 3515 | default: |
| 3516 | PARSE_ERROR1; |
| 3517 | } |
| 3518 | return 0; |
| 3519 | } |
| 3520 | #endif /* CONFIG_ISDN_AUDIO */ |
| 3521 | |
| 3522 | /* |
| 3523 | * Parse and perform an AT-command-line. |
| 3524 | */ |
| 3525 | static void |
| 3526 | isdn_tty_parse_at(modem_info * info) |
| 3527 | { |
| 3528 | atemu *m = &info->emu; |
| 3529 | char *p; |
| 3530 | char ds[40]; |
| 3531 | |
| 3532 | #ifdef ISDN_DEBUG_AT |
| 3533 | printk(KERN_DEBUG "AT: '%s'\n", m->mdmcmd); |
| 3534 | #endif |
| 3535 | for (p = &m->mdmcmd[2]; *p;) { |
| 3536 | switch (*p) { |
| 3537 | case ' ': |
| 3538 | p++; |
| 3539 | break; |
| 3540 | case 'A': |
| 3541 | /* A - Accept incoming call */ |
| 3542 | p++; |
| 3543 | isdn_tty_cmd_ATA(info); |
| 3544 | return; |
| 3545 | break; |
| 3546 | case 'D': |
| 3547 | /* D - Dial */ |
| 3548 | if (info->msr & UART_MSR_DCD) |
| 3549 | PARSE_ERROR; |
| 3550 | if (info->msr & UART_MSR_RI) { |
| 3551 | isdn_tty_modem_result(RESULT_NO_CARRIER, info); |
| 3552 | return; |
| 3553 | } |
| 3554 | isdn_tty_getdial(++p, ds, sizeof ds); |
| 3555 | p += strlen(p); |
| 3556 | if (!strlen(m->msn)) |
| 3557 | isdn_tty_modem_result(RESULT_NO_MSN_EAZ, info); |
| 3558 | else if (strlen(ds)) |
| 3559 | isdn_tty_dial(ds, info, m); |
| 3560 | else |
| 3561 | PARSE_ERROR; |
| 3562 | return; |
| 3563 | case 'E': |
| 3564 | /* E - Turn Echo on/off */ |
| 3565 | p++; |
| 3566 | switch (isdn_getnum(&p)) { |
| 3567 | case 0: |
| 3568 | m->mdmreg[REG_ECHO] &= ~BIT_ECHO; |
| 3569 | break; |
| 3570 | case 1: |
| 3571 | m->mdmreg[REG_ECHO] |= BIT_ECHO; |
| 3572 | break; |
| 3573 | default: |
| 3574 | PARSE_ERROR; |
| 3575 | } |
| 3576 | break; |
| 3577 | case 'H': |
| 3578 | /* H - On/Off-hook */ |
| 3579 | p++; |
| 3580 | switch (*p) { |
| 3581 | case '0': |
| 3582 | p++; |
| 3583 | isdn_tty_on_hook(info); |
| 3584 | break; |
| 3585 | case '1': |
| 3586 | p++; |
| 3587 | isdn_tty_off_hook(); |
| 3588 | break; |
| 3589 | default: |
| 3590 | isdn_tty_on_hook(info); |
| 3591 | break; |
| 3592 | } |
| 3593 | break; |
| 3594 | case 'I': |
| 3595 | /* I - Information */ |
| 3596 | p++; |
| 3597 | isdn_tty_at_cout("\r\nLinux ISDN", info); |
| 3598 | switch (*p) { |
| 3599 | case '0': |
| 3600 | case '1': |
| 3601 | p++; |
| 3602 | break; |
| 3603 | case '2': |
| 3604 | p++; |
| 3605 | isdn_tty_report(info); |
| 3606 | break; |
| 3607 | case '3': |
| 3608 | p++; |
| 3609 | sprintf(ds, "\r\n%d", info->emu.charge); |
| 3610 | isdn_tty_at_cout(ds, info); |
| 3611 | break; |
| 3612 | default:; |
| 3613 | } |
| 3614 | break; |
| 3615 | #ifdef DUMMY_HAYES_AT |
| 3616 | case 'L': |
| 3617 | case 'M': |
| 3618 | /* only for be compilant with common scripts */ |
| 3619 | /* no function */ |
| 3620 | p++; |
| 3621 | isdn_getnum(&p); |
| 3622 | break; |
| 3623 | #endif |
| 3624 | case 'O': |
| 3625 | /* O - Go online */ |
| 3626 | p++; |
| 3627 | if (info->msr & UART_MSR_DCD) |
| 3628 | /* if B-Channel is up */ |
| 3629 | isdn_tty_modem_result((m->mdmreg[REG_L2PROT] == ISDN_PROTO_L2_MODEM) ? RESULT_CONNECT:RESULT_CONNECT64000, info); |
| 3630 | else |
| 3631 | isdn_tty_modem_result(RESULT_NO_CARRIER, info); |
| 3632 | return; |
| 3633 | case 'Q': |
| 3634 | /* Q - Turn Emulator messages on/off */ |
| 3635 | p++; |
| 3636 | switch (isdn_getnum(&p)) { |
| 3637 | case 0: |
| 3638 | m->mdmreg[REG_RESP] |= BIT_RESP; |
| 3639 | break; |
| 3640 | case 1: |
| 3641 | m->mdmreg[REG_RESP] &= ~BIT_RESP; |
| 3642 | break; |
| 3643 | default: |
| 3644 | PARSE_ERROR; |
| 3645 | } |
| 3646 | break; |
| 3647 | case 'S': |
| 3648 | /* S - Set/Get Register */ |
| 3649 | p++; |
| 3650 | if (isdn_tty_cmd_ATS(&p, info)) |
| 3651 | return; |
| 3652 | break; |
| 3653 | case 'V': |
| 3654 | /* V - Numeric or ASCII Emulator-messages */ |
| 3655 | p++; |
| 3656 | switch (isdn_getnum(&p)) { |
| 3657 | case 0: |
| 3658 | m->mdmreg[REG_RESP] |= BIT_RESPNUM; |
| 3659 | break; |
| 3660 | case 1: |
| 3661 | m->mdmreg[REG_RESP] &= ~BIT_RESPNUM; |
| 3662 | break; |
| 3663 | default: |
| 3664 | PARSE_ERROR; |
| 3665 | } |
| 3666 | break; |
| 3667 | case 'Z': |
| 3668 | /* Z - Load Registers from Profile */ |
| 3669 | p++; |
| 3670 | if (info->msr & UART_MSR_DCD) { |
| 3671 | info->online = 0; |
| 3672 | isdn_tty_on_hook(info); |
| 3673 | } |
| 3674 | isdn_tty_modem_reset_regs(info, 1); |
| 3675 | break; |
| 3676 | case '+': |
| 3677 | p++; |
| 3678 | switch (*p) { |
| 3679 | #ifdef CONFIG_ISDN_AUDIO |
| 3680 | case 'F': |
| 3681 | p++; |
| 3682 | if (isdn_tty_cmd_PLUSF(&p, info)) |
| 3683 | return; |
| 3684 | break; |
| 3685 | case 'V': |
| 3686 | if ((!(m->mdmreg[REG_SI1] & 1)) || |
| 3687 | (m->mdmreg[REG_L2PROT] == ISDN_PROTO_L2_MODEM)) |
| 3688 | PARSE_ERROR; |
| 3689 | p++; |
| 3690 | if (isdn_tty_cmd_PLUSV(&p, info)) |
| 3691 | return; |
| 3692 | break; |
| 3693 | #endif /* CONFIG_ISDN_AUDIO */ |
| 3694 | case 'S': /* SUSPEND */ |
| 3695 | p++; |
| 3696 | isdn_tty_get_msnstr(ds, &p); |
| 3697 | isdn_tty_suspend(ds, info, m); |
| 3698 | break; |
| 3699 | case 'R': /* RESUME */ |
| 3700 | p++; |
| 3701 | isdn_tty_get_msnstr(ds, &p); |
| 3702 | isdn_tty_resume(ds, info, m); |
| 3703 | break; |
| 3704 | case 'M': /* MESSAGE */ |
| 3705 | p++; |
| 3706 | isdn_tty_send_msg(info, m, p); |
| 3707 | break; |
| 3708 | default: |
| 3709 | PARSE_ERROR; |
| 3710 | } |
| 3711 | break; |
| 3712 | case '&': |
| 3713 | p++; |
| 3714 | if (isdn_tty_cmd_ATand(&p, info)) |
| 3715 | return; |
| 3716 | break; |
| 3717 | default: |
| 3718 | PARSE_ERROR; |
| 3719 | } |
| 3720 | } |
| 3721 | #ifdef CONFIG_ISDN_AUDIO |
| 3722 | if (!info->vonline) |
| 3723 | #endif |
| 3724 | isdn_tty_modem_result(RESULT_OK, info); |
| 3725 | } |
| 3726 | |
| 3727 | /* Need own toupper() because standard-toupper is not available |
| 3728 | * within modules. |
| 3729 | */ |
| 3730 | #define my_toupper(c) (((c>='a')&&(c<='z'))?(c&0xdf):c) |
| 3731 | |
| 3732 | /* |
| 3733 | * Perform line-editing of AT-commands |
| 3734 | * |
| 3735 | * Parameters: |
| 3736 | * p inputbuffer |
| 3737 | * count length of buffer |
| 3738 | * channel index to line (minor-device) |
| 3739 | */ |
| 3740 | static int |
| 3741 | isdn_tty_edit_at(const char *p, int count, modem_info * info) |
| 3742 | { |
| 3743 | atemu *m = &info->emu; |
| 3744 | int total = 0; |
| 3745 | u_char c; |
| 3746 | char eb[2]; |
| 3747 | int cnt; |
| 3748 | |
| 3749 | for (cnt = count; cnt > 0; p++, cnt--) { |
| 3750 | c = *p; |
| 3751 | total++; |
| 3752 | if (c == m->mdmreg[REG_CR] || c == m->mdmreg[REG_LF]) { |
| 3753 | /* Separator (CR or LF) */ |
| 3754 | m->mdmcmd[m->mdmcmdl] = 0; |
| 3755 | if (m->mdmreg[REG_ECHO] & BIT_ECHO) { |
| 3756 | eb[0] = c; |
| 3757 | eb[1] = 0; |
| 3758 | isdn_tty_at_cout(eb, info); |
| 3759 | } |
| 3760 | if ((m->mdmcmdl >= 2) && (!(strncmp(m->mdmcmd, "AT", 2)))) |
| 3761 | isdn_tty_parse_at(info); |
| 3762 | m->mdmcmdl = 0; |
| 3763 | continue; |
| 3764 | } |
| 3765 | if (c == m->mdmreg[REG_BS] && m->mdmreg[REG_BS] < 128) { |
| 3766 | /* Backspace-Function */ |
| 3767 | if ((m->mdmcmdl > 2) || (!m->mdmcmdl)) { |
| 3768 | if (m->mdmcmdl) |
| 3769 | m->mdmcmdl--; |
| 3770 | if (m->mdmreg[REG_ECHO] & BIT_ECHO) |
| 3771 | isdn_tty_at_cout("\b", info); |
| 3772 | } |
| 3773 | continue; |
| 3774 | } |
| 3775 | if (cmdchar(c)) { |
| 3776 | if (m->mdmreg[REG_ECHO] & BIT_ECHO) { |
| 3777 | eb[0] = c; |
| 3778 | eb[1] = 0; |
| 3779 | isdn_tty_at_cout(eb, info); |
| 3780 | } |
| 3781 | if (m->mdmcmdl < 255) { |
| 3782 | c = my_toupper(c); |
| 3783 | switch (m->mdmcmdl) { |
| 3784 | case 1: |
| 3785 | if (c == 'T') { |
| 3786 | m->mdmcmd[m->mdmcmdl] = c; |
| 3787 | m->mdmcmd[++m->mdmcmdl] = 0; |
| 3788 | break; |
| 3789 | } else |
| 3790 | m->mdmcmdl = 0; |
| 3791 | /* Fall through, check for 'A' */ |
| 3792 | case 0: |
| 3793 | if (c == 'A') { |
| 3794 | m->mdmcmd[m->mdmcmdl] = c; |
| 3795 | m->mdmcmd[++m->mdmcmdl] = 0; |
| 3796 | } |
| 3797 | break; |
| 3798 | default: |
| 3799 | m->mdmcmd[m->mdmcmdl] = c; |
| 3800 | m->mdmcmd[++m->mdmcmdl] = 0; |
| 3801 | } |
| 3802 | } |
| 3803 | } |
| 3804 | } |
| 3805 | return total; |
| 3806 | } |
| 3807 | |
| 3808 | /* |
| 3809 | * Switch all modem-channels who are online and got a valid |
| 3810 | * escape-sequence 1.5 seconds ago, to command-mode. |
| 3811 | * This function is called every second via timer-interrupt from within |
| 3812 | * timer-dispatcher isdn_timer_function() |
| 3813 | */ |
| 3814 | void |
| 3815 | isdn_tty_modem_escape(void) |
| 3816 | { |
| 3817 | int ton = 0; |
| 3818 | int i; |
| 3819 | int midx; |
| 3820 | |
| 3821 | for (i = 0; i < ISDN_MAX_CHANNELS; i++) |
| 3822 | if (USG_MODEM(dev->usage[i])) |
| 3823 | if ((midx = dev->m_idx[i]) >= 0) { |
| 3824 | modem_info *info = &dev->mdm.info[midx]; |
| 3825 | if (info->online) { |
| 3826 | ton = 1; |
| 3827 | if ((info->emu.pluscount == 3) && |
| 3828 | time_after(jiffies , info->emu.lastplus + PLUSWAIT2)) { |
| 3829 | info->emu.pluscount = 0; |
| 3830 | info->online = 0; |
| 3831 | isdn_tty_modem_result(RESULT_OK, info); |
| 3832 | } |
| 3833 | } |
| 3834 | } |
| 3835 | isdn_timer_ctrl(ISDN_TIMER_MODEMPLUS, ton); |
| 3836 | } |
| 3837 | |
| 3838 | /* |
| 3839 | * Put a RING-message to all modem-channels who have the RI-bit set. |
| 3840 | * This function is called every second via timer-interrupt from within |
| 3841 | * timer-dispatcher isdn_timer_function() |
| 3842 | */ |
| 3843 | void |
| 3844 | isdn_tty_modem_ring(void) |
| 3845 | { |
| 3846 | int ton = 0; |
| 3847 | int i; |
| 3848 | |
| 3849 | for (i = 0; i < ISDN_MAX_CHANNELS; i++) { |
| 3850 | modem_info *info = &dev->mdm.info[i]; |
| 3851 | if (info->msr & UART_MSR_RI) { |
| 3852 | ton = 1; |
| 3853 | isdn_tty_modem_result(RESULT_RING, info); |
| 3854 | } |
| 3855 | } |
| 3856 | isdn_timer_ctrl(ISDN_TIMER_MODEMRING, ton); |
| 3857 | } |
| 3858 | |
| 3859 | /* |
| 3860 | * For all online tty's, try sending data to |
| 3861 | * the lower levels. |
| 3862 | */ |
| 3863 | void |
| 3864 | isdn_tty_modem_xmit(void) |
| 3865 | { |
| 3866 | int ton = 1; |
| 3867 | int i; |
| 3868 | |
| 3869 | for (i = 0; i < ISDN_MAX_CHANNELS; i++) { |
| 3870 | modem_info *info = &dev->mdm.info[i]; |
| 3871 | if (info->online) { |
| 3872 | ton = 1; |
| 3873 | isdn_tty_senddown(info); |
| 3874 | isdn_tty_tint(info); |
| 3875 | } |
| 3876 | } |
| 3877 | isdn_timer_ctrl(ISDN_TIMER_MODEMXMIT, ton); |
| 3878 | } |
| 3879 | |
| 3880 | /* |
| 3881 | * Check all channels if we have a 'no carrier' timeout. |
| 3882 | * Timeout value is set by Register S7. |
| 3883 | */ |
| 3884 | void |
| 3885 | isdn_tty_carrier_timeout(void) |
| 3886 | { |
| 3887 | int ton = 0; |
| 3888 | int i; |
| 3889 | |
| 3890 | for (i = 0; i < ISDN_MAX_CHANNELS; i++) { |
| 3891 | modem_info *info = &dev->mdm.info[i]; |
| 3892 | if (info->dialing) { |
| 3893 | if (info->emu.carrierwait++ > info->emu.mdmreg[REG_WAITC]) { |
| 3894 | info->dialing = 0; |
| 3895 | isdn_tty_modem_result(RESULT_NO_CARRIER, info); |
| 3896 | isdn_tty_modem_hup(info, 1); |
| 3897 | } |
| 3898 | else |
| 3899 | ton = 1; |
| 3900 | } |
| 3901 | } |
| 3902 | isdn_timer_ctrl(ISDN_TIMER_CARRIER, ton); |
| 3903 | } |