hfc_usb.c revision 59c51591a0ac7568824f541f57de967e88adaa07
1/* 2 * hfc_usb.c 3 * 4 * $Id: hfc_usb.c,v 2.3.2.13 2006/02/17 17:17:22 mbachem Exp $ 5 * 6 * modular HiSax ISDN driver for Colognechip HFC-S USB chip 7 * 8 * Authors : Peter Sprenger (sprenger@moving-bytes.de) 9 * Martin Bachem (info@colognechip.com) 10 * 11 * based on the first hfc_usb driver of 12 * Werner Cornelius (werner@isdn-development.de) 13 * 14 * This program is free software; you can redistribute it and/or modify 15 * it under the terms of the GNU General Public License as published by 16 * the Free Software Foundation; either version 2, or (at your option) 17 * any later version. 18 * 19 * This program is distributed in the hope that it will be useful, 20 * but WITHOUT ANY WARRANTY; without even the implied warranty of 21 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the 22 * GNU General Public License for more details. 23 * 24 * You should have received a copy of the GNU General Public License 25 * along with this program; if not, write to the Free Software 26 * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA. 27 * 28 * See Version Histroy at the bottom of this file 29 * 30*/ 31 32#include <linux/types.h> 33#include <linux/stddef.h> 34#include <linux/timer.h> 35#include <linux/init.h> 36#include <linux/module.h> 37#include <linux/kernel_stat.h> 38#include <linux/usb.h> 39#include <linux/kernel.h> 40#include "hisax.h" 41#include "hisax_if.h" 42#include "hfc_usb.h" 43 44static const char *hfcusb_revision = 45 "$Revision: 2.3.2.13 $ $Date: 2006/02/17 17:17:22 $ "; 46 47/* Hisax debug support 48* use "modprobe debug=x" where x is bitfield of USB_DBG & ISDN_DBG 49*/ 50#ifdef CONFIG_HISAX_DEBUG 51#include <linux/moduleparam.h> 52#define __debug_variable hfc_debug 53#include "hisax_debug.h" 54static u_int debug; 55module_param(debug, uint, 0); 56static int hfc_debug; 57#endif 58 59/* private vendor specific data */ 60typedef struct { 61 __u8 led_scheme; // led display scheme 62 signed short led_bits[8]; // array of 8 possible LED bitmask settings 63 char *vend_name; // device name 64} hfcsusb_vdata; 65 66/****************************************/ 67/* data defining the devices to be used */ 68/****************************************/ 69static struct usb_device_id hfcusb_idtab[] = { 70 { 71 USB_DEVICE(0x0959, 0x2bd0), 72 .driver_info = (unsigned long) &((hfcsusb_vdata) 73 {LED_OFF, {4, 0, 2, 1}, 74 "ISDN USB TA (Cologne Chip HFC-S USB based)"}), 75 }, 76 { 77 USB_DEVICE(0x0675, 0x1688), 78 .driver_info = (unsigned long) &((hfcsusb_vdata) 79 {LED_SCHEME1, {1, 2, 0, 0}, 80 "DrayTek miniVigor 128 USB ISDN TA"}), 81 }, 82 { 83 USB_DEVICE(0x07b0, 0x0007), 84 .driver_info = (unsigned long) &((hfcsusb_vdata) 85 {LED_SCHEME1, {0x80, -64, -32, -16}, 86 "Billion tiny USB ISDN TA 128"}), 87 }, 88 { 89 USB_DEVICE(0x0742, 0x2008), 90 .driver_info = (unsigned long) &((hfcsusb_vdata) 91 {LED_SCHEME1, {4, 0, 2, 1}, 92 "Stollmann USB TA"}), 93 }, 94 { 95 USB_DEVICE(0x0742, 0x2009), 96 .driver_info = (unsigned long) &((hfcsusb_vdata) 97 {LED_SCHEME1, {4, 0, 2, 1}, 98 "Aceex USB ISDN TA"}), 99 }, 100 { 101 USB_DEVICE(0x0742, 0x200A), 102 .driver_info = (unsigned long) &((hfcsusb_vdata) 103 {LED_SCHEME1, {4, 0, 2, 1}, 104 "OEM USB ISDN TA"}), 105 }, 106 { 107 USB_DEVICE(0x08e3, 0x0301), 108 .driver_info = (unsigned long) &((hfcsusb_vdata) 109 {LED_SCHEME1, {2, 0, 1, 4}, 110 "Olitec USB RNIS"}), 111 }, 112 { 113 USB_DEVICE(0x07fa, 0x0846), 114 .driver_info = (unsigned long) &((hfcsusb_vdata) 115 {LED_SCHEME1, {0x80, -64, -32, -16}, 116 "Bewan Modem RNIS USB"}), 117 }, 118 { 119 USB_DEVICE(0x07fa, 0x0847), 120 .driver_info = (unsigned long) &((hfcsusb_vdata) 121 {LED_SCHEME1, {0x80, -64, -32, -16}, 122 "Djinn Numeris USB"}), 123 }, 124 { 125 USB_DEVICE(0x07b0, 0x0006), 126 .driver_info = (unsigned long) &((hfcsusb_vdata) 127 {LED_SCHEME1, {0x80, -64, -32, -16}, 128 "Twister ISDN TA"}), 129 }, 130 { } 131}; 132 133/***************************************************************/ 134/* structure defining input+output fifos (interrupt/bulk mode) */ 135/***************************************************************/ 136struct usb_fifo; /* forward definition */ 137typedef struct iso_urb_struct { 138 struct urb *purb; 139 __u8 buffer[ISO_BUFFER_SIZE]; /* buffer incoming/outgoing data */ 140 struct usb_fifo *owner_fifo; /* pointer to owner fifo */ 141} iso_urb_struct; 142 143 144struct hfcusb_data; /* forward definition */ 145typedef struct usb_fifo { 146 int fifonum; /* fifo index attached to this structure */ 147 int active; /* fifo is currently active */ 148 struct hfcusb_data *hfc; /* pointer to main structure */ 149 int pipe; /* address of endpoint */ 150 __u8 usb_packet_maxlen; /* maximum length for usb transfer */ 151 unsigned int max_size; /* maximum size of receive/send packet */ 152 __u8 intervall; /* interrupt interval */ 153 struct sk_buff *skbuff; /* actual used buffer */ 154 struct urb *urb; /* transfer structure for usb routines */ 155 __u8 buffer[128]; /* buffer incoming/outgoing data */ 156 int bit_line; /* how much bits are in the fifo? */ 157 158 volatile __u8 usb_transfer_mode; /* switched between ISO and INT */ 159 iso_urb_struct iso[2]; /* need two urbs to have one always for pending */ 160 struct hisax_if *hif; /* hisax interface */ 161 int delete_flg; /* only delete skbuff once */ 162 int last_urblen; /* remember length of last packet */ 163 164} usb_fifo; 165 166/*********************************************/ 167/* structure holding all data for one device */ 168/*********************************************/ 169typedef struct hfcusb_data { 170 /* HiSax Interface for loadable Layer1 drivers */ 171 struct hisax_d_if d_if; /* see hisax_if.h */ 172 struct hisax_b_if b_if[2]; /* see hisax_if.h */ 173 int protocol; 174 175 struct usb_device *dev; /* our device */ 176 int if_used; /* used interface number */ 177 int alt_used; /* used alternate config */ 178 int ctrl_paksize; /* control pipe packet size */ 179 int ctrl_in_pipe, ctrl_out_pipe; /* handles for control pipe */ 180 int cfg_used; /* configuration index used */ 181 int vend_idx; /* vendor found */ 182 int b_mode[2]; /* B-channel mode */ 183 int l1_activated; /* layer 1 activated */ 184 int disc_flag; /* 'true' if device was disonnected to avoid some USB actions */ 185 int packet_size, iso_packet_size; 186 187 /* control pipe background handling */ 188 ctrl_buft ctrl_buff[HFC_CTRL_BUFSIZE]; /* buffer holding queued data */ 189 volatile int ctrl_in_idx, ctrl_out_idx, ctrl_cnt; /* input/output pointer + count */ 190 struct urb *ctrl_urb; /* transfer structure for control channel */ 191 192 struct usb_ctrlrequest ctrl_write; /* buffer for control write request */ 193 struct usb_ctrlrequest ctrl_read; /* same for read request */ 194 195 __u8 old_led_state, led_state, led_new_data, led_b_active; 196 197 volatile __u8 threshold_mask; /* threshold actually reported */ 198 volatile __u8 bch_enables; /* or mask for sctrl_r and sctrl register values */ 199 200 usb_fifo fifos[HFCUSB_NUM_FIFOS]; /* structure holding all fifo data */ 201 202 volatile __u8 l1_state; /* actual l1 state */ 203 struct timer_list t3_timer; /* timer 3 for activation/deactivation */ 204 struct timer_list t4_timer; /* timer 4 for activation/deactivation */ 205} hfcusb_data; 206 207 208static void collect_rx_frame(usb_fifo * fifo, __u8 * data, int len, 209 int finish); 210 211 212static inline const char * 213symbolic(struct hfcusb_symbolic_list list[], const int num) 214{ 215 int i; 216 for (i = 0; list[i].name != NULL; i++) 217 if (list[i].num == num) 218 return (list[i].name); 219 return "<unknown ERROR>"; 220} 221 222 223/******************************************************/ 224/* start next background transfer for control channel */ 225/******************************************************/ 226static void 227ctrl_start_transfer(hfcusb_data * hfc) 228{ 229 if (hfc->ctrl_cnt) { 230 hfc->ctrl_urb->pipe = hfc->ctrl_out_pipe; 231 hfc->ctrl_urb->setup_packet = (u_char *) & hfc->ctrl_write; 232 hfc->ctrl_urb->transfer_buffer = NULL; 233 hfc->ctrl_urb->transfer_buffer_length = 0; 234 hfc->ctrl_write.wIndex = 235 cpu_to_le16(hfc->ctrl_buff[hfc->ctrl_out_idx].hfc_reg); 236 hfc->ctrl_write.wValue = 237 cpu_to_le16(hfc->ctrl_buff[hfc->ctrl_out_idx].reg_val); 238 239 usb_submit_urb(hfc->ctrl_urb, GFP_ATOMIC); /* start transfer */ 240 } 241} /* ctrl_start_transfer */ 242 243/************************************/ 244/* queue a control transfer request */ 245/* return 0 on success. */ 246/************************************/ 247static int 248queue_control_request(hfcusb_data * hfc, __u8 reg, __u8 val, int action) 249{ 250 ctrl_buft *buf; 251 252 if (hfc->ctrl_cnt >= HFC_CTRL_BUFSIZE) 253 return (1); /* no space left */ 254 buf = &hfc->ctrl_buff[hfc->ctrl_in_idx]; /* pointer to new index */ 255 buf->hfc_reg = reg; 256 buf->reg_val = val; 257 buf->action = action; 258 if (++hfc->ctrl_in_idx >= HFC_CTRL_BUFSIZE) 259 hfc->ctrl_in_idx = 0; /* pointer wrap */ 260 if (++hfc->ctrl_cnt == 1) 261 ctrl_start_transfer(hfc); 262 return (0); 263} /* queue_control_request */ 264 265static int 266control_action_handler(hfcusb_data * hfc, int reg, int val, int action) 267{ 268 if (!action) 269 return (1); /* no action defined */ 270 return (0); 271} 272 273/***************************************************************/ 274/* control completion routine handling background control cmds */ 275/***************************************************************/ 276static void 277ctrl_complete(struct urb *urb) 278{ 279 hfcusb_data *hfc = (hfcusb_data *) urb->context; 280 ctrl_buft *buf; 281 282 urb->dev = hfc->dev; 283 if (hfc->ctrl_cnt) { 284 buf = &hfc->ctrl_buff[hfc->ctrl_out_idx]; 285 control_action_handler(hfc, buf->hfc_reg, buf->reg_val, 286 buf->action); 287 288 hfc->ctrl_cnt--; /* decrement actual count */ 289 if (++hfc->ctrl_out_idx >= HFC_CTRL_BUFSIZE) 290 hfc->ctrl_out_idx = 0; /* pointer wrap */ 291 292 ctrl_start_transfer(hfc); /* start next transfer */ 293 } 294} /* ctrl_complete */ 295 296/***************************************************/ 297/* write led data to auxport & invert if necessary */ 298/***************************************************/ 299static void 300write_led(hfcusb_data * hfc, __u8 led_state) 301{ 302 if (led_state != hfc->old_led_state) { 303 hfc->old_led_state = led_state; 304 queue_control_request(hfc, HFCUSB_P_DATA, led_state, 1); 305 } 306} 307 308/**************************/ 309/* handle LED bits */ 310/**************************/ 311static void 312set_led_bit(hfcusb_data * hfc, signed short led_bits, int unset) 313{ 314 if (unset) { 315 if (led_bits < 0) 316 hfc->led_state |= abs(led_bits); 317 else 318 hfc->led_state &= ~led_bits; 319 } else { 320 if (led_bits < 0) 321 hfc->led_state &= ~abs(led_bits); 322 else 323 hfc->led_state |= led_bits; 324 } 325} 326 327/**************************/ 328/* handle LED requests */ 329/**************************/ 330static void 331handle_led(hfcusb_data * hfc, int event) 332{ 333 hfcsusb_vdata *driver_info = 334 (hfcsusb_vdata *) hfcusb_idtab[hfc->vend_idx].driver_info; 335 336 /* if no scheme -> no LED action */ 337 if (driver_info->led_scheme == LED_OFF) 338 return; 339 340 switch (event) { 341 case LED_POWER_ON: 342 set_led_bit(hfc, driver_info->led_bits[0], 343 0); 344 set_led_bit(hfc, driver_info->led_bits[1], 345 1); 346 set_led_bit(hfc, driver_info->led_bits[2], 347 1); 348 set_led_bit(hfc, driver_info->led_bits[3], 349 1); 350 break; 351 case LED_POWER_OFF: /* no Power off handling */ 352 break; 353 case LED_S0_ON: 354 set_led_bit(hfc, driver_info->led_bits[1], 355 0); 356 break; 357 case LED_S0_OFF: 358 set_led_bit(hfc, driver_info->led_bits[1], 359 1); 360 break; 361 case LED_B1_ON: 362 set_led_bit(hfc, driver_info->led_bits[2], 363 0); 364 break; 365 case LED_B1_OFF: 366 set_led_bit(hfc, driver_info->led_bits[2], 367 1); 368 break; 369 case LED_B2_ON: 370 set_led_bit(hfc, driver_info->led_bits[3], 371 0); 372 break; 373 case LED_B2_OFF: 374 set_led_bit(hfc, driver_info->led_bits[3], 375 1); 376 break; 377 } 378 write_led(hfc, hfc->led_state); 379} 380 381/********************************/ 382/* called when timer t3 expires */ 383/********************************/ 384static void 385l1_timer_expire_t3(hfcusb_data * hfc) 386{ 387 hfc->d_if.ifc.l1l2(&hfc->d_if.ifc, PH_DEACTIVATE | INDICATION, 388 NULL); 389#ifdef CONFIG_HISAX_DEBUG 390 DBG(ISDN_DBG, 391 "HFC-S USB: PH_DEACTIVATE | INDICATION sent (T3 expire)"); 392#endif 393 hfc->l1_activated = false; 394 handle_led(hfc, LED_S0_OFF); 395 /* deactivate : */ 396 queue_control_request(hfc, HFCUSB_STATES, 0x10, 1); 397 queue_control_request(hfc, HFCUSB_STATES, 3, 1); 398} 399 400/********************************/ 401/* called when timer t4 expires */ 402/********************************/ 403static void 404l1_timer_expire_t4(hfcusb_data * hfc) 405{ 406 hfc->d_if.ifc.l1l2(&hfc->d_if.ifc, PH_DEACTIVATE | INDICATION, 407 NULL); 408#ifdef CONFIG_HISAX_DEBUG 409 DBG(ISDN_DBG, 410 "HFC-S USB: PH_DEACTIVATE | INDICATION sent (T4 expire)"); 411#endif 412 hfc->l1_activated = false; 413 handle_led(hfc, LED_S0_OFF); 414} 415 416/*****************************/ 417/* handle S0 state changes */ 418/*****************************/ 419static void 420state_handler(hfcusb_data * hfc, __u8 state) 421{ 422 __u8 old_state; 423 424 old_state = hfc->l1_state; 425 if (state == old_state || state < 1 || state > 8) 426 return; 427 428#ifdef CONFIG_HISAX_DEBUG 429 DBG(ISDN_DBG, "HFC-S USB: new S0 state:%d old_state:%d", state, 430 old_state); 431#endif 432 if (state < 4 || state == 7 || state == 8) { 433 if (timer_pending(&hfc->t3_timer)) 434 del_timer(&hfc->t3_timer); 435#ifdef CONFIG_HISAX_DEBUG 436 DBG(ISDN_DBG, "HFC-S USB: T3 deactivated"); 437#endif 438 } 439 if (state >= 7) { 440 if (timer_pending(&hfc->t4_timer)) 441 del_timer(&hfc->t4_timer); 442#ifdef CONFIG_HISAX_DEBUG 443 DBG(ISDN_DBG, "HFC-S USB: T4 deactivated"); 444#endif 445 } 446 447 if (state == 7 && !hfc->l1_activated) { 448 hfc->d_if.ifc.l1l2(&hfc->d_if.ifc, 449 PH_ACTIVATE | INDICATION, NULL); 450#ifdef CONFIG_HISAX_DEBUG 451 DBG(ISDN_DBG, "HFC-S USB: PH_ACTIVATE | INDICATION sent"); 452#endif 453 hfc->l1_activated = true; 454 handle_led(hfc, LED_S0_ON); 455 } else if (state <= 3 /* && activated */ ) { 456 if (old_state == 7 || old_state == 8) { 457#ifdef CONFIG_HISAX_DEBUG 458 DBG(ISDN_DBG, "HFC-S USB: T4 activated"); 459#endif 460 if (!timer_pending(&hfc->t4_timer)) { 461 hfc->t4_timer.expires = 462 jiffies + (HFC_TIMER_T4 * HZ) / 1000; 463 add_timer(&hfc->t4_timer); 464 } 465 } else { 466 hfc->d_if.ifc.l1l2(&hfc->d_if.ifc, 467 PH_DEACTIVATE | INDICATION, 468 NULL); 469#ifdef CONFIG_HISAX_DEBUG 470 DBG(ISDN_DBG, 471 "HFC-S USB: PH_DEACTIVATE | INDICATION sent"); 472#endif 473 hfc->l1_activated = false; 474 handle_led(hfc, LED_S0_OFF); 475 } 476 } 477 hfc->l1_state = state; 478} 479 480/* prepare iso urb */ 481static void 482fill_isoc_urb(struct urb *urb, struct usb_device *dev, unsigned int pipe, 483 void *buf, int num_packets, int packet_size, int interval, 484 usb_complete_t complete, void *context) 485{ 486 int k; 487 488 spin_lock_init(&urb->lock); 489 urb->dev = dev; 490 urb->pipe = pipe; 491 urb->complete = complete; 492 urb->number_of_packets = num_packets; 493 urb->transfer_buffer_length = packet_size * num_packets; 494 urb->context = context; 495 urb->transfer_buffer = buf; 496 urb->transfer_flags = URB_ISO_ASAP; 497 urb->actual_length = 0; 498 urb->interval = interval; 499 for (k = 0; k < num_packets; k++) { 500 urb->iso_frame_desc[k].offset = packet_size * k; 501 urb->iso_frame_desc[k].length = packet_size; 502 urb->iso_frame_desc[k].actual_length = 0; 503 } 504} 505 506/* allocs urbs and start isoc transfer with two pending urbs to avoid 507 gaps in the transfer chain */ 508static int 509start_isoc_chain(usb_fifo * fifo, int num_packets_per_urb, 510 usb_complete_t complete, int packet_size) 511{ 512 int i, k, errcode; 513 514 printk(KERN_INFO "HFC-S USB: starting ISO-chain for Fifo %i\n", 515 fifo->fifonum); 516 517 /* allocate Memory for Iso out Urbs */ 518 for (i = 0; i < 2; i++) { 519 if (!(fifo->iso[i].purb)) { 520 fifo->iso[i].purb = 521 usb_alloc_urb(num_packets_per_urb, GFP_KERNEL); 522 if (!(fifo->iso[i].purb)) { 523 printk(KERN_INFO 524 "alloc urb for fifo %i failed!!!", 525 fifo->fifonum); 526 } 527 fifo->iso[i].owner_fifo = (struct usb_fifo *) fifo; 528 529 /* Init the first iso */ 530 if (ISO_BUFFER_SIZE >= 531 (fifo->usb_packet_maxlen * 532 num_packets_per_urb)) { 533 fill_isoc_urb(fifo->iso[i].purb, 534 fifo->hfc->dev, fifo->pipe, 535 fifo->iso[i].buffer, 536 num_packets_per_urb, 537 fifo->usb_packet_maxlen, 538 fifo->intervall, complete, 539 &fifo->iso[i]); 540 memset(fifo->iso[i].buffer, 0, 541 sizeof(fifo->iso[i].buffer)); 542 /* defining packet delimeters in fifo->buffer */ 543 for (k = 0; k < num_packets_per_urb; k++) { 544 fifo->iso[i].purb-> 545 iso_frame_desc[k].offset = 546 k * packet_size; 547 fifo->iso[i].purb-> 548 iso_frame_desc[k].length = 549 packet_size; 550 } 551 } else { 552 printk(KERN_INFO 553 "HFC-S USB: ISO Buffer size to small!\n"); 554 } 555 } 556 fifo->bit_line = BITLINE_INF; 557 558 errcode = usb_submit_urb(fifo->iso[i].purb, GFP_KERNEL); 559 fifo->active = (errcode >= 0) ? 1 : 0; 560 if (errcode < 0) { 561 printk(KERN_INFO "HFC-S USB: %s URB nr:%d\n", 562 symbolic(urb_errlist, errcode), i); 563 }; 564 } 565 return (fifo->active); 566} 567 568/* stops running iso chain and frees their pending urbs */ 569static void 570stop_isoc_chain(usb_fifo * fifo) 571{ 572 int i; 573 574 for (i = 0; i < 2; i++) { 575 if (fifo->iso[i].purb) { 576#ifdef CONFIG_HISAX_DEBUG 577 DBG(USB_DBG, 578 "HFC-S USB: Stopping iso chain for fifo %i.%i", 579 fifo->fifonum, i); 580#endif 581 usb_unlink_urb(fifo->iso[i].purb); 582 usb_free_urb(fifo->iso[i].purb); 583 fifo->iso[i].purb = NULL; 584 } 585 } 586 if (fifo->urb) { 587 usb_unlink_urb(fifo->urb); 588 usb_free_urb(fifo->urb); 589 fifo->urb = NULL; 590 } 591 fifo->active = 0; 592} 593 594/* defines how much ISO packets are handled in one URB */ 595static int iso_packets[8] = 596 { ISOC_PACKETS_B, ISOC_PACKETS_B, ISOC_PACKETS_B, ISOC_PACKETS_B, 597 ISOC_PACKETS_D, ISOC_PACKETS_D, ISOC_PACKETS_D, ISOC_PACKETS_D 598}; 599 600/*****************************************************/ 601/* transmit completion routine for all ISO tx fifos */ 602/*****************************************************/ 603static void 604tx_iso_complete(struct urb *urb) 605{ 606 iso_urb_struct *context_iso_urb = (iso_urb_struct *) urb->context; 607 usb_fifo *fifo = context_iso_urb->owner_fifo; 608 hfcusb_data *hfc = fifo->hfc; 609 int k, tx_offset, num_isoc_packets, sink, len, current_len, 610 errcode; 611 int frame_complete, transp_mode, fifon, status; 612 __u8 threshbit; 613 __u8 threshtable[8] = { 1, 2, 4, 8, 0x10, 0x20, 0x40, 0x80 }; 614 615 fifon = fifo->fifonum; 616 status = urb->status; 617 618 tx_offset = 0; 619 620 if (fifo->active && !status) { 621 transp_mode = 0; 622 if (fifon < 4 && hfc->b_mode[fifon / 2] == L1_MODE_TRANS) 623 transp_mode = true; 624 625 /* is FifoFull-threshold set for our channel? */ 626 threshbit = threshtable[fifon] & hfc->threshold_mask; 627 num_isoc_packets = iso_packets[fifon]; 628 629 /* predict dataflow to avoid fifo overflow */ 630 if (fifon >= HFCUSB_D_TX) { 631 sink = (threshbit) ? SINK_DMIN : SINK_DMAX; 632 } else { 633 sink = (threshbit) ? SINK_MIN : SINK_MAX; 634 } 635 fill_isoc_urb(urb, fifo->hfc->dev, fifo->pipe, 636 context_iso_urb->buffer, num_isoc_packets, 637 fifo->usb_packet_maxlen, fifo->intervall, 638 tx_iso_complete, urb->context); 639 memset(context_iso_urb->buffer, 0, 640 sizeof(context_iso_urb->buffer)); 641 frame_complete = false; 642 /* Generate next Iso Packets */ 643 for (k = 0; k < num_isoc_packets; ++k) { 644 if (fifo->skbuff) { 645 len = fifo->skbuff->len; 646 /* we lower data margin every msec */ 647 fifo->bit_line -= sink; 648 current_len = (0 - fifo->bit_line) / 8; 649 /* maximum 15 byte for every ISO packet makes our life easier */ 650 if (current_len > 14) 651 current_len = 14; 652 current_len = 653 (len <= 654 current_len) ? len : current_len; 655 /* how much bit do we put on the line? */ 656 fifo->bit_line += current_len * 8; 657 658 context_iso_urb->buffer[tx_offset] = 0; 659 if (current_len == len) { 660 if (!transp_mode) { 661 /* here frame completion */ 662 context_iso_urb-> 663 buffer[tx_offset] = 1; 664 /* add 2 byte flags and 16bit CRC at end of ISDN frame */ 665 fifo->bit_line += 32; 666 } 667 frame_complete = true; 668 } 669 670 memcpy(context_iso_urb->buffer + 671 tx_offset + 1, fifo->skbuff->data, 672 current_len); 673 skb_pull(fifo->skbuff, current_len); 674 675 /* define packet delimeters within the URB buffer */ 676 urb->iso_frame_desc[k].offset = tx_offset; 677 urb->iso_frame_desc[k].length = 678 current_len + 1; 679 680 tx_offset += (current_len + 1); 681 } else { 682 urb->iso_frame_desc[k].offset = 683 tx_offset++; 684 685 urb->iso_frame_desc[k].length = 1; 686 fifo->bit_line -= sink; /* we lower data margin every msec */ 687 688 if (fifo->bit_line < BITLINE_INF) { 689 fifo->bit_line = BITLINE_INF; 690 } 691 } 692 693 if (frame_complete) { 694 fifo->delete_flg = true; 695 fifo->hif->l1l2(fifo->hif, 696 PH_DATA | CONFIRM, 697 (void *) (unsigned long) fifo->skbuff-> 698 truesize); 699 if (fifo->skbuff && fifo->delete_flg) { 700 dev_kfree_skb_any(fifo->skbuff); 701 fifo->skbuff = NULL; 702 fifo->delete_flg = false; 703 } 704 frame_complete = false; 705 } 706 } 707 errcode = usb_submit_urb(urb, GFP_ATOMIC); 708 if (errcode < 0) { 709 printk(KERN_INFO 710 "HFC-S USB: error submitting ISO URB: %d \n", 711 errcode); 712 } 713 } else { 714 if (status && !hfc->disc_flag) { 715 printk(KERN_INFO 716 "HFC-S USB: tx_iso_complete : urb->status %s (%i), fifonum=%d\n", 717 symbolic(urb_errlist, status), status, 718 fifon); 719 } 720 } 721} /* tx_iso_complete */ 722 723/*****************************************************/ 724/* receive completion routine for all ISO tx fifos */ 725/*****************************************************/ 726static void 727rx_iso_complete(struct urb *urb) 728{ 729 iso_urb_struct *context_iso_urb = (iso_urb_struct *) urb->context; 730 usb_fifo *fifo = context_iso_urb->owner_fifo; 731 hfcusb_data *hfc = fifo->hfc; 732 int k, len, errcode, offset, num_isoc_packets, fifon, maxlen, 733 status; 734 unsigned int iso_status; 735 __u8 *buf; 736 static __u8 eof[8]; 737#ifdef CONFIG_HISAX_DEBUG 738 __u8 i; 739#endif 740 741 fifon = fifo->fifonum; 742 status = urb->status; 743 744 if (urb->status == -EOVERFLOW) { 745#ifdef CONFIG_HISAX_DEBUG 746 DBG(USB_DBG, 747 "HFC-USB: ignoring USB DATAOVERRUN for fifo %i \n", 748 fifon); 749#endif 750 status = 0; 751 } 752 if (fifo->active && !status) { 753 num_isoc_packets = iso_packets[fifon]; 754 maxlen = fifo->usb_packet_maxlen; 755 for (k = 0; k < num_isoc_packets; ++k) { 756 len = urb->iso_frame_desc[k].actual_length; 757 offset = urb->iso_frame_desc[k].offset; 758 buf = context_iso_urb->buffer + offset; 759 iso_status = urb->iso_frame_desc[k].status; 760#ifdef CONFIG_HISAX_DEBUG 761 if (iso_status && !hfc->disc_flag) 762 DBG(USB_DBG, 763 "HFC-S USB: ISO packet failure - status:%x", 764 iso_status); 765 766 if ((fifon == 5) && (debug > 1)) { 767 printk(KERN_INFO 768 "HFC-S USB: ISO-D-RX lst_urblen:%2d " 769 "act_urblen:%2d max-urblen:%2d " 770 "EOF:0x%0x DATA: ", 771 fifo->last_urblen, len, maxlen, 772 eof[5]); 773 for (i = 0; i < len; i++) 774 printk("%.2x ", buf[i]); 775 printk("\n"); 776 } 777#endif 778 if (fifo->last_urblen != maxlen) { 779 /* the threshold mask is in the 2nd status byte */ 780 hfc->threshold_mask = buf[1]; 781 /* care for L1 state only for D-Channel 782 to avoid overlapped iso completions */ 783 if (fifon == 5) { 784 /* the S0 state is in the upper half 785 of the 1st status byte */ 786 state_handler(hfc, buf[0] >> 4); 787 } 788 eof[fifon] = buf[0] & 1; 789 if (len > 2) 790 collect_rx_frame(fifo, buf + 2, 791 len - 2, 792 (len < 793 maxlen) ? 794 eof[fifon] : 0); 795 } else { 796 collect_rx_frame(fifo, buf, len, 797 (len < 798 maxlen) ? eof[fifon] : 799 0); 800 } 801 fifo->last_urblen = len; 802 } 803 804 fill_isoc_urb(urb, fifo->hfc->dev, fifo->pipe, 805 context_iso_urb->buffer, num_isoc_packets, 806 fifo->usb_packet_maxlen, fifo->intervall, 807 rx_iso_complete, urb->context); 808 errcode = usb_submit_urb(urb, GFP_ATOMIC); 809 if (errcode < 0) { 810 printk(KERN_INFO 811 "HFC-S USB: error submitting ISO URB: %d \n", 812 errcode); 813 } 814 } else { 815 if (status && !hfc->disc_flag) { 816 printk(KERN_INFO 817 "HFC-S USB: rx_iso_complete : " 818 "urb->status %d, fifonum %d\n", 819 status, fifon); 820 } 821 } 822} /* rx_iso_complete */ 823 824/*****************************************************/ 825/* collect data from interrupt or isochron in */ 826/*****************************************************/ 827static void 828collect_rx_frame(usb_fifo * fifo, __u8 * data, int len, int finish) 829{ 830 hfcusb_data *hfc = fifo->hfc; 831 int transp_mode, fifon; 832#ifdef CONFIG_HISAX_DEBUG 833 int i; 834#endif 835 fifon = fifo->fifonum; 836 transp_mode = 0; 837 if (fifon < 4 && hfc->b_mode[fifon / 2] == L1_MODE_TRANS) 838 transp_mode = true; 839 840 if (!fifo->skbuff) { 841 fifo->skbuff = dev_alloc_skb(fifo->max_size + 3); 842 if (!fifo->skbuff) { 843 printk(KERN_INFO 844 "HFC-S USB: cannot allocate buffer (dev_alloc_skb) fifo:%d\n", 845 fifon); 846 return; 847 } 848 } 849 if (len) { 850 if (fifo->skbuff->len + len < fifo->max_size) { 851 memcpy(skb_put(fifo->skbuff, len), data, len); 852 } else { 853#ifdef CONFIG_HISAX_DEBUG 854 printk(KERN_INFO "HFC-S USB: "); 855 for (i = 0; i < 15; i++) 856 printk("%.2x ", 857 fifo->skbuff->data[fifo->skbuff-> 858 len - 15 + i]); 859 printk("\n"); 860#endif 861 printk(KERN_INFO 862 "HCF-USB: got frame exceeded fifo->max_size:%d on fifo:%d\n", 863 fifo->max_size, fifon); 864 } 865 } 866 if (transp_mode && fifo->skbuff->len >= 128) { 867 fifo->hif->l1l2(fifo->hif, PH_DATA | INDICATION, 868 fifo->skbuff); 869 fifo->skbuff = NULL; 870 return; 871 } 872 /* we have a complete hdlc packet */ 873 if (finish) { 874 if ((!fifo->skbuff->data[fifo->skbuff->len - 1]) 875 && (fifo->skbuff->len > 3)) { 876 /* remove CRC & status */ 877 skb_trim(fifo->skbuff, fifo->skbuff->len - 3); 878 if (fifon == HFCUSB_PCM_RX) { 879 fifo->hif->l1l2(fifo->hif, 880 PH_DATA_E | INDICATION, 881 fifo->skbuff); 882 } else 883 fifo->hif->l1l2(fifo->hif, 884 PH_DATA | INDICATION, 885 fifo->skbuff); 886 fifo->skbuff = NULL; /* buffer was freed from upper layer */ 887 } else { 888 if (fifo->skbuff->len > 3) { 889 printk(KERN_INFO 890 "HFC-S USB: got frame %d bytes but CRC ERROR on fifo:%d!!!\n", 891 fifo->skbuff->len, fifon); 892#ifdef CONFIG_HISAX_DEBUG 893 if (debug > 1) { 894 printk(KERN_INFO "HFC-S USB: "); 895 for (i = 0; i < 15; i++) 896 printk("%.2x ", 897 fifo->skbuff-> 898 data[fifo->skbuff-> 899 len - 15 + i]); 900 printk("\n"); 901 } 902#endif 903 } 904#ifdef CONFIG_HISAX_DEBUG 905 else { 906 printk(KERN_INFO 907 "HFC-S USB: frame to small (%d bytes)!!!\n", 908 fifo->skbuff->len); 909 } 910#endif 911 skb_trim(fifo->skbuff, 0); 912 } 913 } 914} 915 916/***********************************************/ 917/* receive completion routine for all rx fifos */ 918/***********************************************/ 919static void 920rx_complete(struct urb *urb) 921{ 922 int len; 923 int status; 924 __u8 *buf, maxlen, fifon; 925 usb_fifo *fifo = (usb_fifo *) urb->context; 926 hfcusb_data *hfc = fifo->hfc; 927 static __u8 eof[8]; 928#ifdef CONFIG_HISAX_DEBUG 929 __u8 i; 930#endif 931 932 urb->dev = hfc->dev; /* security init */ 933 934 fifon = fifo->fifonum; 935 if ((!fifo->active) || (urb->status)) { 936#ifdef CONFIG_HISAX_DEBUG 937 DBG(USB_DBG, "HFC-S USB: RX-Fifo %i is going down (%i)", 938 fifon, urb->status); 939#endif 940 fifo->urb->interval = 0; /* cancel automatic rescheduling */ 941 if (fifo->skbuff) { 942 dev_kfree_skb_any(fifo->skbuff); 943 fifo->skbuff = NULL; 944 } 945 return; 946 } 947 len = urb->actual_length; 948 buf = fifo->buffer; 949 maxlen = fifo->usb_packet_maxlen; 950 951#ifdef CONFIG_HISAX_DEBUG 952 if ((fifon == 5) && (debug > 1)) { 953 printk(KERN_INFO 954 "HFC-S USB: INT-D-RX lst_urblen:%2d act_urblen:%2d max-urblen:%2d EOF:0x%0x DATA: ", 955 fifo->last_urblen, len, maxlen, eof[5]); 956 for (i = 0; i < len; i++) 957 printk("%.2x ", buf[i]); 958 printk("\n"); 959 } 960#endif 961 962 if (fifo->last_urblen != fifo->usb_packet_maxlen) { 963 /* the threshold mask is in the 2nd status byte */ 964 hfc->threshold_mask = buf[1]; 965 /* the S0 state is in the upper half of the 1st status byte */ 966 state_handler(hfc, buf[0] >> 4); 967 eof[fifon] = buf[0] & 1; 968 /* if we have more than the 2 status bytes -> collect data */ 969 if (len > 2) 970 collect_rx_frame(fifo, buf + 2, 971 urb->actual_length - 2, 972 (len < maxlen) ? eof[fifon] : 0); 973 } else { 974 collect_rx_frame(fifo, buf, urb->actual_length, 975 (len < maxlen) ? eof[fifon] : 0); 976 } 977 fifo->last_urblen = urb->actual_length; 978 status = usb_submit_urb(urb, GFP_ATOMIC); 979 if (status) { 980 printk(KERN_INFO 981 "HFC-S USB: error resubmitting URN at rx_complete...\n"); 982 } 983} /* rx_complete */ 984 985/***************************************************/ 986/* start the interrupt transfer for the given fifo */ 987/***************************************************/ 988static void 989start_int_fifo(usb_fifo * fifo) 990{ 991 int errcode; 992 993 printk(KERN_INFO "HFC-S USB: starting intr IN fifo:%d\n", 994 fifo->fifonum); 995 996 if (!fifo->urb) { 997 fifo->urb = usb_alloc_urb(0, GFP_KERNEL); 998 if (!fifo->urb) 999 return; 1000 } 1001 usb_fill_int_urb(fifo->urb, fifo->hfc->dev, fifo->pipe, 1002 fifo->buffer, fifo->usb_packet_maxlen, 1003 rx_complete, fifo, fifo->intervall); 1004 fifo->active = 1; /* must be marked active */ 1005 errcode = usb_submit_urb(fifo->urb, GFP_KERNEL); 1006 if (errcode) { 1007 printk(KERN_INFO 1008 "HFC-S USB: submit URB error(start_int_info): status:%i\n", 1009 errcode); 1010 fifo->active = 0; 1011 fifo->skbuff = NULL; 1012 } 1013} /* start_int_fifo */ 1014 1015/*****************************/ 1016/* set the B-channel mode */ 1017/*****************************/ 1018static void 1019set_hfcmode(hfcusb_data * hfc, int channel, int mode) 1020{ 1021 __u8 val, idx_table[2] = { 0, 2 }; 1022 1023 if (hfc->disc_flag) { 1024 return; 1025 } 1026#ifdef CONFIG_HISAX_DEBUG 1027 DBG(ISDN_DBG, "HFC-S USB: setting channel %d to mode %d", channel, 1028 mode); 1029#endif 1030 hfc->b_mode[channel] = mode; 1031 1032 /* setup CON_HDLC */ 1033 val = 0; 1034 if (mode != L1_MODE_NULL) 1035 val = 8; /* enable fifo? */ 1036 if (mode == L1_MODE_TRANS) 1037 val |= 2; /* set transparent bit */ 1038 1039 /* set FIFO to transmit register */ 1040 queue_control_request(hfc, HFCUSB_FIFO, idx_table[channel], 1); 1041 queue_control_request(hfc, HFCUSB_CON_HDLC, val, 1); 1042 /* reset fifo */ 1043 queue_control_request(hfc, HFCUSB_INC_RES_F, 2, 1); 1044 /* set FIFO to receive register */ 1045 queue_control_request(hfc, HFCUSB_FIFO, idx_table[channel] + 1, 1); 1046 queue_control_request(hfc, HFCUSB_CON_HDLC, val, 1); 1047 /* reset fifo */ 1048 queue_control_request(hfc, HFCUSB_INC_RES_F, 2, 1); 1049 1050 val = 0x40; 1051 if (hfc->b_mode[0]) 1052 val |= 1; 1053 if (hfc->b_mode[1]) 1054 val |= 2; 1055 queue_control_request(hfc, HFCUSB_SCTRL, val, 1); 1056 1057 val = 0; 1058 if (hfc->b_mode[0]) 1059 val |= 1; 1060 if (hfc->b_mode[1]) 1061 val |= 2; 1062 queue_control_request(hfc, HFCUSB_SCTRL_R, val, 1); 1063 1064 if (mode == L1_MODE_NULL) { 1065 if (channel) 1066 handle_led(hfc, LED_B2_OFF); 1067 else 1068 handle_led(hfc, LED_B1_OFF); 1069 } else { 1070 if (channel) 1071 handle_led(hfc, LED_B2_ON); 1072 else 1073 handle_led(hfc, LED_B1_ON); 1074 } 1075} 1076 1077static void 1078hfc_usb_l2l1(struct hisax_if *my_hisax_if, int pr, void *arg) 1079{ 1080 usb_fifo *fifo = my_hisax_if->priv; 1081 hfcusb_data *hfc = fifo->hfc; 1082 1083 switch (pr) { 1084 case PH_ACTIVATE | REQUEST: 1085 if (fifo->fifonum == HFCUSB_D_TX) { 1086#ifdef CONFIG_HISAX_DEBUG 1087 DBG(ISDN_DBG, 1088 "HFC_USB: hfc_usb_d_l2l1 D-chan: PH_ACTIVATE | REQUEST"); 1089#endif 1090 if (hfc->l1_state != 3 1091 && hfc->l1_state != 7) { 1092 hfc->d_if.ifc.l1l2(&hfc->d_if.ifc, 1093 PH_DEACTIVATE | 1094 INDICATION, 1095 NULL); 1096#ifdef CONFIG_HISAX_DEBUG 1097 DBG(ISDN_DBG, 1098 "HFC-S USB: PH_DEACTIVATE | INDICATION sent (not state 3 or 7)"); 1099#endif 1100 } else { 1101 if (hfc->l1_state == 7) { /* l1 already active */ 1102 hfc->d_if.ifc.l1l2(&hfc-> 1103 d_if. 1104 ifc, 1105 PH_ACTIVATE 1106 | 1107 INDICATION, 1108 NULL); 1109#ifdef CONFIG_HISAX_DEBUG 1110 DBG(ISDN_DBG, 1111 "HFC-S USB: PH_ACTIVATE | INDICATION sent again ;)"); 1112#endif 1113 } else { 1114 /* force sending sending INFO1 */ 1115 queue_control_request(hfc, 1116 HFCUSB_STATES, 1117 0x14, 1118 1); 1119 mdelay(1); 1120 /* start l1 activation */ 1121 queue_control_request(hfc, 1122 HFCUSB_STATES, 1123 0x04, 1124 1); 1125 if (!timer_pending 1126 (&hfc->t3_timer)) { 1127 hfc->t3_timer. 1128 expires = 1129 jiffies + 1130 (HFC_TIMER_T3 * 1131 HZ) / 1000; 1132 add_timer(&hfc-> 1133 t3_timer); 1134 } 1135 } 1136 } 1137 } else { 1138#ifdef CONFIG_HISAX_DEBUG 1139 DBG(ISDN_DBG, 1140 "HFC_USB: hfc_usb_d_l2l1 Bx-chan: PH_ACTIVATE | REQUEST"); 1141#endif 1142 set_hfcmode(hfc, 1143 (fifo->fifonum == 1144 HFCUSB_B1_TX) ? 0 : 1, 1145 (long) arg); 1146 fifo->hif->l1l2(fifo->hif, 1147 PH_ACTIVATE | INDICATION, 1148 NULL); 1149 } 1150 break; 1151 case PH_DEACTIVATE | REQUEST: 1152 if (fifo->fifonum == HFCUSB_D_TX) { 1153#ifdef CONFIG_HISAX_DEBUG 1154 DBG(ISDN_DBG, 1155 "HFC_USB: hfc_usb_d_l2l1 D-chan: PH_DEACTIVATE | REQUEST"); 1156#endif 1157 printk(KERN_INFO 1158 "HFC-S USB: ISDN TE device should not deativate...\n"); 1159 } else { 1160#ifdef CONFIG_HISAX_DEBUG 1161 DBG(ISDN_DBG, 1162 "HFC_USB: hfc_usb_d_l2l1 Bx-chan: PH_DEACTIVATE | REQUEST"); 1163#endif 1164 set_hfcmode(hfc, 1165 (fifo->fifonum == 1166 HFCUSB_B1_TX) ? 0 : 1, 1167 (int) L1_MODE_NULL); 1168 fifo->hif->l1l2(fifo->hif, 1169 PH_DEACTIVATE | INDICATION, 1170 NULL); 1171 } 1172 break; 1173 case PH_DATA | REQUEST: 1174 if (fifo->skbuff && fifo->delete_flg) { 1175 dev_kfree_skb_any(fifo->skbuff); 1176 fifo->skbuff = NULL; 1177 fifo->delete_flg = false; 1178 } 1179 fifo->skbuff = arg; /* we have a new buffer */ 1180 break; 1181 default: 1182 printk(KERN_INFO 1183 "HFC_USB: hfc_usb_d_l2l1: unkown state : %#x\n", 1184 pr); 1185 break; 1186 } 1187} 1188 1189/***************************************************************************/ 1190/* usb_init is called once when a new matching device is detected to setup */ 1191/* main parameters. It registers the driver at the main hisax module. */ 1192/* on success 0 is returned. */ 1193/***************************************************************************/ 1194static int 1195usb_init(hfcusb_data * hfc) 1196{ 1197 usb_fifo *fifo; 1198 int i, err; 1199 u_char b; 1200 struct hisax_b_if *p_b_if[2]; 1201 1202 /* check the chip id */ 1203 if (read_usb(hfc, HFCUSB_CHIP_ID, &b) != 1) { 1204 printk(KERN_INFO "HFC-USB: cannot read chip id\n"); 1205 return (1); 1206 } 1207 if (b != HFCUSB_CHIPID) { 1208 printk(KERN_INFO "HFC-S USB: Invalid chip id 0x%02x\n", b); 1209 return (1); 1210 } 1211 1212 /* first set the needed config, interface and alternate */ 1213 err = usb_set_interface(hfc->dev, hfc->if_used, hfc->alt_used); 1214 1215 /* do Chip reset */ 1216 write_usb(hfc, HFCUSB_CIRM, 8); 1217 /* aux = output, reset off */ 1218 write_usb(hfc, HFCUSB_CIRM, 0x10); 1219 1220 /* set USB_SIZE to match the wMaxPacketSize for INT or BULK transfers */ 1221 write_usb(hfc, HFCUSB_USB_SIZE, 1222 (hfc->packet_size / 8) | ((hfc->packet_size / 8) << 4)); 1223 1224 /* set USB_SIZE_I to match the wMaxPacketSize for ISO transfers */ 1225 write_usb(hfc, HFCUSB_USB_SIZE_I, hfc->iso_packet_size); 1226 1227 /* enable PCM/GCI master mode */ 1228 write_usb(hfc, HFCUSB_MST_MODE1, 0); /* set default values */ 1229 write_usb(hfc, HFCUSB_MST_MODE0, 1); /* enable master mode */ 1230 1231 /* init the fifos */ 1232 write_usb(hfc, HFCUSB_F_THRES, 1233 (HFCUSB_TX_THRESHOLD / 1234 8) | ((HFCUSB_RX_THRESHOLD / 8) << 4)); 1235 1236 fifo = hfc->fifos; 1237 for (i = 0; i < HFCUSB_NUM_FIFOS; i++) { 1238 write_usb(hfc, HFCUSB_FIFO, i); /* select the desired fifo */ 1239 fifo[i].skbuff = NULL; /* init buffer pointer */ 1240 fifo[i].max_size = 1241 (i <= HFCUSB_B2_RX) ? MAX_BCH_SIZE : MAX_DFRAME_LEN; 1242 fifo[i].last_urblen = 0; 1243 /* set 2 bit for D- & E-channel */ 1244 write_usb(hfc, HFCUSB_HDLC_PAR, 1245 ((i <= HFCUSB_B2_RX) ? 0 : 2)); 1246 /* rx hdlc, enable IFF for D-channel */ 1247 write_usb(hfc, HFCUSB_CON_HDLC, 1248 ((i == HFCUSB_D_TX) ? 0x09 : 0x08)); 1249 write_usb(hfc, HFCUSB_INC_RES_F, 2); /* reset the fifo */ 1250 } 1251 1252 write_usb(hfc, HFCUSB_CLKDEL, 0x0f); /* clock delay value */ 1253 write_usb(hfc, HFCUSB_STATES, 3 | 0x10); /* set deactivated mode */ 1254 write_usb(hfc, HFCUSB_STATES, 3); /* enable state machine */ 1255 1256 write_usb(hfc, HFCUSB_SCTRL_R, 0); /* disable both B receivers */ 1257 write_usb(hfc, HFCUSB_SCTRL, 0x40); /* disable B transmitters + capacitive mode */ 1258 1259 /* set both B-channel to not connected */ 1260 hfc->b_mode[0] = L1_MODE_NULL; 1261 hfc->b_mode[1] = L1_MODE_NULL; 1262 1263 hfc->l1_activated = false; 1264 hfc->disc_flag = false; 1265 hfc->led_state = 0; 1266 hfc->led_new_data = 0; 1267 hfc->old_led_state = 0; 1268 1269 /* init the t3 timer */ 1270 init_timer(&hfc->t3_timer); 1271 hfc->t3_timer.data = (long) hfc; 1272 hfc->t3_timer.function = (void *) l1_timer_expire_t3; 1273 1274 /* init the t4 timer */ 1275 init_timer(&hfc->t4_timer); 1276 hfc->t4_timer.data = (long) hfc; 1277 hfc->t4_timer.function = (void *) l1_timer_expire_t4; 1278 1279 /* init the background machinery for control requests */ 1280 hfc->ctrl_read.bRequestType = 0xc0; 1281 hfc->ctrl_read.bRequest = 1; 1282 hfc->ctrl_read.wLength = cpu_to_le16(1); 1283 hfc->ctrl_write.bRequestType = 0x40; 1284 hfc->ctrl_write.bRequest = 0; 1285 hfc->ctrl_write.wLength = 0; 1286 usb_fill_control_urb(hfc->ctrl_urb, 1287 hfc->dev, 1288 hfc->ctrl_out_pipe, 1289 (u_char *) & hfc->ctrl_write, 1290 NULL, 0, ctrl_complete, hfc); 1291 /* Init All Fifos */ 1292 for (i = 0; i < HFCUSB_NUM_FIFOS; i++) { 1293 hfc->fifos[i].iso[0].purb = NULL; 1294 hfc->fifos[i].iso[1].purb = NULL; 1295 hfc->fifos[i].active = 0; 1296 } 1297 /* register Modul to upper Hisax Layers */ 1298 hfc->d_if.owner = THIS_MODULE; 1299 hfc->d_if.ifc.priv = &hfc->fifos[HFCUSB_D_TX]; 1300 hfc->d_if.ifc.l2l1 = hfc_usb_l2l1; 1301 for (i = 0; i < 2; i++) { 1302 hfc->b_if[i].ifc.priv = &hfc->fifos[HFCUSB_B1_TX + i * 2]; 1303 hfc->b_if[i].ifc.l2l1 = hfc_usb_l2l1; 1304 p_b_if[i] = &hfc->b_if[i]; 1305 } 1306 /* default Prot: EURO ISDN, should be a module_param */ 1307 hfc->protocol = 2; 1308 hisax_register(&hfc->d_if, p_b_if, "hfc_usb", hfc->protocol); 1309 1310#ifdef CONFIG_HISAX_DEBUG 1311 hfc_debug = debug; 1312#endif 1313 1314 for (i = 0; i < 4; i++) 1315 hfc->fifos[i].hif = &p_b_if[i / 2]->ifc; 1316 for (i = 4; i < 8; i++) 1317 hfc->fifos[i].hif = &hfc->d_if.ifc; 1318 1319 /* 3 (+1) INT IN + 3 ISO OUT */ 1320 if (hfc->cfg_used == CNF_3INT3ISO || hfc->cfg_used == CNF_4INT3ISO) { 1321 start_int_fifo(hfc->fifos + HFCUSB_D_RX); 1322 if (hfc->fifos[HFCUSB_PCM_RX].pipe) 1323 start_int_fifo(hfc->fifos + HFCUSB_PCM_RX); 1324 start_int_fifo(hfc->fifos + HFCUSB_B1_RX); 1325 start_int_fifo(hfc->fifos + HFCUSB_B2_RX); 1326 } 1327 /* 3 (+1) ISO IN + 3 ISO OUT */ 1328 if (hfc->cfg_used == CNF_3ISO3ISO || hfc->cfg_used == CNF_4ISO3ISO) { 1329 start_isoc_chain(hfc->fifos + HFCUSB_D_RX, ISOC_PACKETS_D, 1330 rx_iso_complete, 16); 1331 if (hfc->fifos[HFCUSB_PCM_RX].pipe) 1332 start_isoc_chain(hfc->fifos + HFCUSB_PCM_RX, 1333 ISOC_PACKETS_D, rx_iso_complete, 1334 16); 1335 start_isoc_chain(hfc->fifos + HFCUSB_B1_RX, ISOC_PACKETS_B, 1336 rx_iso_complete, 16); 1337 start_isoc_chain(hfc->fifos + HFCUSB_B2_RX, ISOC_PACKETS_B, 1338 rx_iso_complete, 16); 1339 } 1340 1341 start_isoc_chain(hfc->fifos + HFCUSB_D_TX, ISOC_PACKETS_D, 1342 tx_iso_complete, 1); 1343 start_isoc_chain(hfc->fifos + HFCUSB_B1_TX, ISOC_PACKETS_B, 1344 tx_iso_complete, 1); 1345 start_isoc_chain(hfc->fifos + HFCUSB_B2_TX, ISOC_PACKETS_B, 1346 tx_iso_complete, 1); 1347 1348 handle_led(hfc, LED_POWER_ON); 1349 1350 return (0); 1351} /* usb_init */ 1352 1353/*************************************************/ 1354/* function called to probe a new plugged device */ 1355/*************************************************/ 1356static int 1357hfc_usb_probe(struct usb_interface *intf, const struct usb_device_id *id) 1358{ 1359 struct usb_device *dev = interface_to_usbdev(intf); 1360 hfcusb_data *context; 1361 struct usb_host_interface *iface = intf->cur_altsetting; 1362 struct usb_host_interface *iface_used = NULL; 1363 struct usb_host_endpoint *ep; 1364 int ifnum = iface->desc.bInterfaceNumber; 1365 int i, idx, alt_idx, probe_alt_setting, vend_idx, cfg_used, *vcf, 1366 attr, cfg_found, cidx, ep_addr; 1367 int cmptbl[16], small_match, iso_packet_size, packet_size, 1368 alt_used = 0; 1369 hfcsusb_vdata *driver_info; 1370 1371 vend_idx = 0xffff; 1372 for (i = 0; hfcusb_idtab[i].idVendor; i++) { 1373 if ((le16_to_cpu(dev->descriptor.idVendor) == hfcusb_idtab[i].idVendor) 1374 && (le16_to_cpu(dev->descriptor.idProduct) == hfcusb_idtab[i].idProduct)) { 1375 vend_idx = i; 1376 continue; 1377 } 1378 } 1379 1380#ifdef CONFIG_HISAX_DEBUG 1381 DBG(USB_DBG, 1382 "HFC-USB: probing interface(%d) actalt(%d) minor(%d)\n", ifnum, 1383 iface->desc.bAlternateSetting, intf->minor); 1384#endif 1385 printk(KERN_INFO 1386 "HFC-S USB: probing interface(%d) actalt(%d) minor(%d)\n", 1387 ifnum, iface->desc.bAlternateSetting, intf->minor); 1388 1389 if (vend_idx != 0xffff) { 1390 /* if vendor and product ID is OK, start probing alternate settings */ 1391 alt_idx = 0; 1392 small_match = 0xffff; 1393 1394 /* default settings */ 1395 iso_packet_size = 16; 1396 packet_size = 64; 1397 1398 while (alt_idx < intf->num_altsetting) { 1399 iface = intf->altsetting + alt_idx; 1400 probe_alt_setting = iface->desc.bAlternateSetting; 1401 cfg_used = 0; 1402 1403 /* check for config EOL element */ 1404 while (validconf[cfg_used][0]) { 1405 cfg_found = true; 1406 vcf = validconf[cfg_used]; 1407 /* first endpoint descriptor */ 1408 ep = iface->endpoint; 1409#ifdef CONFIG_HISAX_DEBUG 1410 DBG(USB_DBG, 1411 "HFC-S USB: (if=%d alt=%d cfg_used=%d)\n", 1412 ifnum, probe_alt_setting, cfg_used); 1413#endif 1414 memcpy(cmptbl, vcf, 16 * sizeof(int)); 1415 1416 /* check for all endpoints in this alternate setting */ 1417 for (i = 0; i < iface->desc.bNumEndpoints; 1418 i++) { 1419 ep_addr = 1420 ep->desc.bEndpointAddress; 1421 /* get endpoint base */ 1422 idx = ((ep_addr & 0x7f) - 1) * 2; 1423 if (ep_addr & 0x80) 1424 idx++; 1425 attr = ep->desc.bmAttributes; 1426 if (cmptbl[idx] == EP_NUL) { 1427 cfg_found = false; 1428 } 1429 if (attr == USB_ENDPOINT_XFER_INT 1430 && cmptbl[idx] == EP_INT) 1431 cmptbl[idx] = EP_NUL; 1432 if (attr == USB_ENDPOINT_XFER_BULK 1433 && cmptbl[idx] == EP_BLK) 1434 cmptbl[idx] = EP_NUL; 1435 if (attr == USB_ENDPOINT_XFER_ISOC 1436 && cmptbl[idx] == EP_ISO) 1437 cmptbl[idx] = EP_NUL; 1438 1439 /* check if all INT endpoints match minimum interval */ 1440 if (attr == USB_ENDPOINT_XFER_INT 1441 && ep->desc.bInterval < 1442 vcf[17]) { 1443#ifdef CONFIG_HISAX_DEBUG 1444 if (cfg_found) 1445 DBG(USB_DBG, 1446 "HFC-S USB: Interrupt Endpoint interval < %d found - skipping config", 1447 vcf[17]); 1448#endif 1449 cfg_found = false; 1450 } 1451 ep++; 1452 } 1453 for (i = 0; i < 16; i++) { 1454 /* all entries must be EP_NOP or EP_NUL for a valid config */ 1455 if (cmptbl[i] != EP_NOP 1456 && cmptbl[i] != EP_NUL) 1457 cfg_found = false; 1458 } 1459 if (cfg_found) { 1460 if (cfg_used < small_match) { 1461 small_match = cfg_used; 1462 alt_used = 1463 probe_alt_setting; 1464 iface_used = iface; 1465 } 1466#ifdef CONFIG_HISAX_DEBUG 1467 DBG(USB_DBG, 1468 "HFC-USB: small_match=%x %x\n", 1469 small_match, alt_used); 1470#endif 1471 } 1472 cfg_used++; 1473 } 1474 alt_idx++; 1475 } /* (alt_idx < intf->num_altsetting) */ 1476 1477 /* found a valid USB Ta Endpint config */ 1478 if (small_match != 0xffff) { 1479 iface = iface_used; 1480 if (! 1481 (context = 1482 kzalloc(sizeof(hfcusb_data), GFP_KERNEL))) 1483 return (-ENOMEM); /* got no mem */ 1484 1485 ep = iface->endpoint; 1486 vcf = validconf[small_match]; 1487 1488 for (i = 0; i < iface->desc.bNumEndpoints; i++) { 1489 ep_addr = ep->desc.bEndpointAddress; 1490 /* get endpoint base */ 1491 idx = ((ep_addr & 0x7f) - 1) * 2; 1492 if (ep_addr & 0x80) 1493 idx++; 1494 cidx = idx & 7; 1495 attr = ep->desc.bmAttributes; 1496 1497 /* init Endpoints */ 1498 if (vcf[idx] != EP_NOP 1499 && vcf[idx] != EP_NUL) { 1500 switch (attr) { 1501 case USB_ENDPOINT_XFER_INT: 1502 context-> 1503 fifos[cidx]. 1504 pipe = 1505 usb_rcvintpipe 1506 (dev, 1507 ep->desc. 1508 bEndpointAddress); 1509 context-> 1510 fifos[cidx]. 1511 usb_transfer_mode 1512 = USB_INT; 1513 packet_size = 1514 le16_to_cpu(ep->desc.wMaxPacketSize); 1515 break; 1516 case USB_ENDPOINT_XFER_BULK: 1517 if (ep_addr & 0x80) 1518 context-> 1519 fifos 1520 [cidx]. 1521 pipe = 1522 usb_rcvbulkpipe 1523 (dev, 1524 ep-> 1525 desc. 1526 bEndpointAddress); 1527 else 1528 context-> 1529 fifos 1530 [cidx]. 1531 pipe = 1532 usb_sndbulkpipe 1533 (dev, 1534 ep-> 1535 desc. 1536 bEndpointAddress); 1537 context-> 1538 fifos[cidx]. 1539 usb_transfer_mode 1540 = USB_BULK; 1541 packet_size = 1542 le16_to_cpu(ep->desc.wMaxPacketSize); 1543 break; 1544 case USB_ENDPOINT_XFER_ISOC: 1545 if (ep_addr & 0x80) 1546 context-> 1547 fifos 1548 [cidx]. 1549 pipe = 1550 usb_rcvisocpipe 1551 (dev, 1552 ep-> 1553 desc. 1554 bEndpointAddress); 1555 else 1556 context-> 1557 fifos 1558 [cidx]. 1559 pipe = 1560 usb_sndisocpipe 1561 (dev, 1562 ep-> 1563 desc. 1564 bEndpointAddress); 1565 context-> 1566 fifos[cidx]. 1567 usb_transfer_mode 1568 = USB_ISOC; 1569 iso_packet_size = 1570 le16_to_cpu(ep->desc.wMaxPacketSize); 1571 break; 1572 default: 1573 context-> 1574 fifos[cidx]. 1575 pipe = 0; 1576 } /* switch attribute */ 1577 1578 if (context->fifos[cidx].pipe) { 1579 context->fifos[cidx]. 1580 fifonum = cidx; 1581 context->fifos[cidx].hfc = 1582 context; 1583 context->fifos[cidx].usb_packet_maxlen = 1584 le16_to_cpu(ep->desc.wMaxPacketSize); 1585 context->fifos[cidx]. 1586 intervall = 1587 ep->desc.bInterval; 1588 context->fifos[cidx]. 1589 skbuff = NULL; 1590 } 1591 } 1592 ep++; 1593 } 1594 context->dev = dev; /* save device */ 1595 context->if_used = ifnum; /* save used interface */ 1596 context->alt_used = alt_used; /* and alternate config */ 1597 context->ctrl_paksize = dev->descriptor.bMaxPacketSize0; /* control size */ 1598 context->cfg_used = vcf[16]; /* store used config */ 1599 context->vend_idx = vend_idx; /* store found vendor */ 1600 context->packet_size = packet_size; 1601 context->iso_packet_size = iso_packet_size; 1602 1603 /* create the control pipes needed for register access */ 1604 context->ctrl_in_pipe = 1605 usb_rcvctrlpipe(context->dev, 0); 1606 context->ctrl_out_pipe = 1607 usb_sndctrlpipe(context->dev, 0); 1608 context->ctrl_urb = usb_alloc_urb(0, GFP_KERNEL); 1609 1610 driver_info = 1611 (hfcsusb_vdata *) hfcusb_idtab[vend_idx]. 1612 driver_info; 1613 printk(KERN_INFO "HFC-S USB: detected \"%s\"\n", 1614 driver_info->vend_name); 1615#ifdef CONFIG_HISAX_DEBUG 1616 DBG(USB_DBG, 1617 "HFC-S USB: Endpoint-Config: %s (if=%d alt=%d)\n", 1618 conf_str[small_match], context->if_used, 1619 context->alt_used); 1620 printk(KERN_INFO 1621 "HFC-S USB: E-channel (\"ECHO:\") logging "); 1622 if (validconf[small_match][18]) 1623 printk(" possible\n"); 1624 else 1625 printk("NOT possible\n"); 1626#endif 1627 /* init the chip and register the driver */ 1628 if (usb_init(context)) { 1629 if (context->ctrl_urb) { 1630 usb_unlink_urb(context->ctrl_urb); 1631 usb_free_urb(context->ctrl_urb); 1632 context->ctrl_urb = NULL; 1633 } 1634 kfree(context); 1635 return (-EIO); 1636 } 1637 usb_set_intfdata(intf, context); 1638 return (0); 1639 } 1640 } else { 1641 printk(KERN_INFO 1642 "HFC-S USB: no valid vendor found in USB descriptor\n"); 1643 } 1644 return (-EIO); 1645} 1646 1647/****************************************************/ 1648/* function called when an active device is removed */ 1649/****************************************************/ 1650static void 1651hfc_usb_disconnect(struct usb_interface 1652 *intf) 1653{ 1654 hfcusb_data *context = usb_get_intfdata(intf); 1655 int i; 1656 printk(KERN_INFO "HFC-S USB: device disconnect\n"); 1657 context->disc_flag = true; 1658 usb_set_intfdata(intf, NULL); 1659 if (!context) 1660 return; 1661 if (timer_pending(&context->t3_timer)) 1662 del_timer(&context->t3_timer); 1663 if (timer_pending(&context->t4_timer)) 1664 del_timer(&context->t4_timer); 1665 /* tell all fifos to terminate */ 1666 for (i = 0; i < HFCUSB_NUM_FIFOS; i++) { 1667 if (context->fifos[i].usb_transfer_mode == USB_ISOC) { 1668 if (context->fifos[i].active > 0) { 1669 stop_isoc_chain(&context->fifos[i]); 1670#ifdef CONFIG_HISAX_DEBUG 1671 DBG(USB_DBG, 1672 "HFC-S USB: hfc_usb_disconnect: stopping ISOC chain Fifo no %i", 1673 i); 1674#endif 1675 } 1676 } else { 1677 if (context->fifos[i].active > 0) { 1678 context->fifos[i].active = 0; 1679#ifdef CONFIG_HISAX_DEBUG 1680 DBG(USB_DBG, 1681 "HFC-S USB: hfc_usb_disconnect: unlinking URB for Fifo no %i", 1682 i); 1683#endif 1684 } 1685 if (context->fifos[i].urb) { 1686 usb_unlink_urb(context->fifos[i].urb); 1687 usb_free_urb(context->fifos[i].urb); 1688 context->fifos[i].urb = NULL; 1689 } 1690 } 1691 context->fifos[i].active = 0; 1692 } 1693 /* wait for all URBS to terminate */ 1694 mdelay(10); 1695 if (context->ctrl_urb) { 1696 usb_unlink_urb(context->ctrl_urb); 1697 usb_free_urb(context->ctrl_urb); 1698 context->ctrl_urb = NULL; 1699 } 1700 hisax_unregister(&context->d_if); 1701 kfree(context); /* free our structure again */ 1702} /* hfc_usb_disconnect */ 1703 1704/************************************/ 1705/* our driver information structure */ 1706/************************************/ 1707static struct usb_driver hfc_drv = { 1708 .name = "hfc_usb", 1709 .id_table = hfcusb_idtab, 1710 .probe = hfc_usb_probe, 1711 .disconnect = hfc_usb_disconnect, 1712}; 1713static void __exit 1714hfc_usb_exit(void) 1715{ 1716#ifdef CONFIG_HISAX_DEBUG 1717 DBG(USB_DBG, "HFC-S USB: calling \"hfc_usb_exit\" ..."); 1718#endif 1719 usb_deregister(&hfc_drv); /* release our driver */ 1720 printk(KERN_INFO "HFC-S USB: module removed\n"); 1721} 1722 1723static int __init 1724hfc_usb_init(void) 1725{ 1726#ifndef CONFIG_HISAX_DEBUG 1727 unsigned int debug = -1; 1728#endif 1729 char revstr[30], datestr[30], dummy[30]; 1730 sscanf(hfcusb_revision, 1731 "%s %s $ %s %s %s $ ", dummy, revstr, 1732 dummy, datestr, dummy); 1733 printk(KERN_INFO 1734 "HFC-S USB: driver module revision %s date %s loaded, (debug=%i)\n", 1735 revstr, datestr, debug); 1736 if (usb_register(&hfc_drv)) { 1737 printk(KERN_INFO 1738 "HFC-S USB: Unable to register HFC-S USB module at usb stack\n"); 1739 return (-1); /* unable to register */ 1740 } 1741 return (0); 1742} 1743 1744module_init(hfc_usb_init); 1745module_exit(hfc_usb_exit); 1746MODULE_AUTHOR(DRIVER_AUTHOR); 1747MODULE_DESCRIPTION(DRIVER_DESC); 1748MODULE_LICENSE("GPL"); 1749MODULE_DEVICE_TABLE(usb, hfcusb_idtab); 1750