hfc_usb.c revision ae2d990eede0ef5938c210d48a177c044258ecd8
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 urb->dev = dev; 489 urb->pipe = pipe; 490 urb->complete = complete; 491 urb->number_of_packets = num_packets; 492 urb->transfer_buffer_length = packet_size * num_packets; 493 urb->context = context; 494 urb->transfer_buffer = buf; 495 urb->transfer_flags = URB_ISO_ASAP; 496 urb->actual_length = 0; 497 urb->interval = interval; 498 for (k = 0; k < num_packets; k++) { 499 urb->iso_frame_desc[k].offset = packet_size * k; 500 urb->iso_frame_desc[k].length = packet_size; 501 urb->iso_frame_desc[k].actual_length = 0; 502 } 503} 504 505/* allocs urbs and start isoc transfer with two pending urbs to avoid 506 gaps in the transfer chain */ 507static int 508start_isoc_chain(usb_fifo * fifo, int num_packets_per_urb, 509 usb_complete_t complete, int packet_size) 510{ 511 int i, k, errcode; 512 513 printk(KERN_INFO "HFC-S USB: starting ISO-chain for Fifo %i\n", 514 fifo->fifonum); 515 516 /* allocate Memory for Iso out Urbs */ 517 for (i = 0; i < 2; i++) { 518 if (!(fifo->iso[i].purb)) { 519 fifo->iso[i].purb = 520 usb_alloc_urb(num_packets_per_urb, GFP_KERNEL); 521 if (!(fifo->iso[i].purb)) { 522 printk(KERN_INFO 523 "alloc urb for fifo %i failed!!!", 524 fifo->fifonum); 525 } 526 fifo->iso[i].owner_fifo = (struct usb_fifo *) fifo; 527 528 /* Init the first iso */ 529 if (ISO_BUFFER_SIZE >= 530 (fifo->usb_packet_maxlen * 531 num_packets_per_urb)) { 532 fill_isoc_urb(fifo->iso[i].purb, 533 fifo->hfc->dev, fifo->pipe, 534 fifo->iso[i].buffer, 535 num_packets_per_urb, 536 fifo->usb_packet_maxlen, 537 fifo->intervall, complete, 538 &fifo->iso[i]); 539 memset(fifo->iso[i].buffer, 0, 540 sizeof(fifo->iso[i].buffer)); 541 /* defining packet delimeters in fifo->buffer */ 542 for (k = 0; k < num_packets_per_urb; k++) { 543 fifo->iso[i].purb-> 544 iso_frame_desc[k].offset = 545 k * packet_size; 546 fifo->iso[i].purb-> 547 iso_frame_desc[k].length = 548 packet_size; 549 } 550 } else { 551 printk(KERN_INFO 552 "HFC-S USB: ISO Buffer size to small!\n"); 553 } 554 } 555 fifo->bit_line = BITLINE_INF; 556 557 errcode = usb_submit_urb(fifo->iso[i].purb, GFP_KERNEL); 558 fifo->active = (errcode >= 0) ? 1 : 0; 559 if (errcode < 0) { 560 printk(KERN_INFO "HFC-S USB: %s URB nr:%d\n", 561 symbolic(urb_errlist, errcode), i); 562 }; 563 } 564 return (fifo->active); 565} 566 567/* stops running iso chain and frees their pending urbs */ 568static void 569stop_isoc_chain(usb_fifo * fifo) 570{ 571 int i; 572 573 for (i = 0; i < 2; i++) { 574 if (fifo->iso[i].purb) { 575#ifdef CONFIG_HISAX_DEBUG 576 DBG(USB_DBG, 577 "HFC-S USB: Stopping iso chain for fifo %i.%i", 578 fifo->fifonum, i); 579#endif 580 usb_kill_urb(fifo->iso[i].purb); 581 usb_free_urb(fifo->iso[i].purb); 582 fifo->iso[i].purb = NULL; 583 } 584 } 585 usb_kill_urb(fifo->urb); 586 usb_free_urb(fifo->urb); 587 fifo->urb = NULL; 588 fifo->active = 0; 589} 590 591/* defines how much ISO packets are handled in one URB */ 592static int iso_packets[8] = 593 { ISOC_PACKETS_B, ISOC_PACKETS_B, ISOC_PACKETS_B, ISOC_PACKETS_B, 594 ISOC_PACKETS_D, ISOC_PACKETS_D, ISOC_PACKETS_D, ISOC_PACKETS_D 595}; 596 597/*****************************************************/ 598/* transmit completion routine for all ISO tx fifos */ 599/*****************************************************/ 600static void 601tx_iso_complete(struct urb *urb) 602{ 603 iso_urb_struct *context_iso_urb = (iso_urb_struct *) urb->context; 604 usb_fifo *fifo = context_iso_urb->owner_fifo; 605 hfcusb_data *hfc = fifo->hfc; 606 int k, tx_offset, num_isoc_packets, sink, len, current_len, 607 errcode; 608 int frame_complete, transp_mode, fifon, status; 609 __u8 threshbit; 610 __u8 threshtable[8] = { 1, 2, 4, 8, 0x10, 0x20, 0x40, 0x80 }; 611 612 fifon = fifo->fifonum; 613 status = urb->status; 614 615 tx_offset = 0; 616 617 if (fifo->active && !status) { 618 transp_mode = 0; 619 if (fifon < 4 && hfc->b_mode[fifon / 2] == L1_MODE_TRANS) 620 transp_mode = true; 621 622 /* is FifoFull-threshold set for our channel? */ 623 threshbit = threshtable[fifon] & hfc->threshold_mask; 624 num_isoc_packets = iso_packets[fifon]; 625 626 /* predict dataflow to avoid fifo overflow */ 627 if (fifon >= HFCUSB_D_TX) { 628 sink = (threshbit) ? SINK_DMIN : SINK_DMAX; 629 } else { 630 sink = (threshbit) ? SINK_MIN : SINK_MAX; 631 } 632 fill_isoc_urb(urb, fifo->hfc->dev, fifo->pipe, 633 context_iso_urb->buffer, num_isoc_packets, 634 fifo->usb_packet_maxlen, fifo->intervall, 635 tx_iso_complete, urb->context); 636 memset(context_iso_urb->buffer, 0, 637 sizeof(context_iso_urb->buffer)); 638 frame_complete = false; 639 /* Generate next Iso Packets */ 640 for (k = 0; k < num_isoc_packets; ++k) { 641 if (fifo->skbuff) { 642 len = fifo->skbuff->len; 643 /* we lower data margin every msec */ 644 fifo->bit_line -= sink; 645 current_len = (0 - fifo->bit_line) / 8; 646 /* maximum 15 byte for every ISO packet makes our life easier */ 647 if (current_len > 14) 648 current_len = 14; 649 current_len = 650 (len <= 651 current_len) ? len : current_len; 652 /* how much bit do we put on the line? */ 653 fifo->bit_line += current_len * 8; 654 655 context_iso_urb->buffer[tx_offset] = 0; 656 if (current_len == len) { 657 if (!transp_mode) { 658 /* here frame completion */ 659 context_iso_urb-> 660 buffer[tx_offset] = 1; 661 /* add 2 byte flags and 16bit CRC at end of ISDN frame */ 662 fifo->bit_line += 32; 663 } 664 frame_complete = true; 665 } 666 667 memcpy(context_iso_urb->buffer + 668 tx_offset + 1, fifo->skbuff->data, 669 current_len); 670 skb_pull(fifo->skbuff, current_len); 671 672 /* define packet delimeters within the URB buffer */ 673 urb->iso_frame_desc[k].offset = tx_offset; 674 urb->iso_frame_desc[k].length = 675 current_len + 1; 676 677 tx_offset += (current_len + 1); 678 } else { 679 urb->iso_frame_desc[k].offset = 680 tx_offset++; 681 682 urb->iso_frame_desc[k].length = 1; 683 fifo->bit_line -= sink; /* we lower data margin every msec */ 684 685 if (fifo->bit_line < BITLINE_INF) { 686 fifo->bit_line = BITLINE_INF; 687 } 688 } 689 690 if (frame_complete) { 691 fifo->delete_flg = true; 692 fifo->hif->l1l2(fifo->hif, 693 PH_DATA | CONFIRM, 694 (void *) (unsigned long) fifo->skbuff-> 695 truesize); 696 if (fifo->skbuff && fifo->delete_flg) { 697 dev_kfree_skb_any(fifo->skbuff); 698 fifo->skbuff = NULL; 699 fifo->delete_flg = false; 700 } 701 frame_complete = false; 702 } 703 } 704 errcode = usb_submit_urb(urb, GFP_ATOMIC); 705 if (errcode < 0) { 706 printk(KERN_INFO 707 "HFC-S USB: error submitting ISO URB: %d \n", 708 errcode); 709 } 710 } else { 711 if (status && !hfc->disc_flag) { 712 printk(KERN_INFO 713 "HFC-S USB: tx_iso_complete : urb->status %s (%i), fifonum=%d\n", 714 symbolic(urb_errlist, status), status, 715 fifon); 716 } 717 } 718} /* tx_iso_complete */ 719 720/*****************************************************/ 721/* receive completion routine for all ISO tx fifos */ 722/*****************************************************/ 723static void 724rx_iso_complete(struct urb *urb) 725{ 726 iso_urb_struct *context_iso_urb = (iso_urb_struct *) urb->context; 727 usb_fifo *fifo = context_iso_urb->owner_fifo; 728 hfcusb_data *hfc = fifo->hfc; 729 int k, len, errcode, offset, num_isoc_packets, fifon, maxlen, 730 status; 731 unsigned int iso_status; 732 __u8 *buf; 733 static __u8 eof[8]; 734#ifdef CONFIG_HISAX_DEBUG 735 __u8 i; 736#endif 737 738 fifon = fifo->fifonum; 739 status = urb->status; 740 741 if (urb->status == -EOVERFLOW) { 742#ifdef CONFIG_HISAX_DEBUG 743 DBG(USB_DBG, 744 "HFC-USB: ignoring USB DATAOVERRUN for fifo %i \n", 745 fifon); 746#endif 747 status = 0; 748 } 749 if (fifo->active && !status) { 750 num_isoc_packets = iso_packets[fifon]; 751 maxlen = fifo->usb_packet_maxlen; 752 for (k = 0; k < num_isoc_packets; ++k) { 753 len = urb->iso_frame_desc[k].actual_length; 754 offset = urb->iso_frame_desc[k].offset; 755 buf = context_iso_urb->buffer + offset; 756 iso_status = urb->iso_frame_desc[k].status; 757#ifdef CONFIG_HISAX_DEBUG 758 if (iso_status && !hfc->disc_flag) 759 DBG(USB_DBG, 760 "HFC-S USB: ISO packet failure - status:%x", 761 iso_status); 762 763 if ((fifon == 5) && (debug > 1)) { 764 printk(KERN_INFO 765 "HFC-S USB: ISO-D-RX lst_urblen:%2d " 766 "act_urblen:%2d max-urblen:%2d " 767 "EOF:0x%0x DATA: ", 768 fifo->last_urblen, len, maxlen, 769 eof[5]); 770 for (i = 0; i < len; i++) 771 printk("%.2x ", buf[i]); 772 printk("\n"); 773 } 774#endif 775 if (fifo->last_urblen != maxlen) { 776 /* the threshold mask is in the 2nd status byte */ 777 hfc->threshold_mask = buf[1]; 778 /* care for L1 state only for D-Channel 779 to avoid overlapped iso completions */ 780 if (fifon == 5) { 781 /* the S0 state is in the upper half 782 of the 1st status byte */ 783 state_handler(hfc, buf[0] >> 4); 784 } 785 eof[fifon] = buf[0] & 1; 786 if (len > 2) 787 collect_rx_frame(fifo, buf + 2, 788 len - 2, 789 (len < 790 maxlen) ? 791 eof[fifon] : 0); 792 } else { 793 collect_rx_frame(fifo, buf, len, 794 (len < 795 maxlen) ? eof[fifon] : 796 0); 797 } 798 fifo->last_urblen = len; 799 } 800 801 fill_isoc_urb(urb, fifo->hfc->dev, fifo->pipe, 802 context_iso_urb->buffer, num_isoc_packets, 803 fifo->usb_packet_maxlen, fifo->intervall, 804 rx_iso_complete, urb->context); 805 errcode = usb_submit_urb(urb, GFP_ATOMIC); 806 if (errcode < 0) { 807 printk(KERN_INFO 808 "HFC-S USB: error submitting ISO URB: %d \n", 809 errcode); 810 } 811 } else { 812 if (status && !hfc->disc_flag) { 813 printk(KERN_INFO 814 "HFC-S USB: rx_iso_complete : " 815 "urb->status %d, fifonum %d\n", 816 status, fifon); 817 } 818 } 819} /* rx_iso_complete */ 820 821/*****************************************************/ 822/* collect data from interrupt or isochron in */ 823/*****************************************************/ 824static void 825collect_rx_frame(usb_fifo * fifo, __u8 * data, int len, int finish) 826{ 827 hfcusb_data *hfc = fifo->hfc; 828 int transp_mode, fifon; 829#ifdef CONFIG_HISAX_DEBUG 830 int i; 831#endif 832 fifon = fifo->fifonum; 833 transp_mode = 0; 834 if (fifon < 4 && hfc->b_mode[fifon / 2] == L1_MODE_TRANS) 835 transp_mode = true; 836 837 if (!fifo->skbuff) { 838 fifo->skbuff = dev_alloc_skb(fifo->max_size + 3); 839 if (!fifo->skbuff) { 840 printk(KERN_INFO 841 "HFC-S USB: cannot allocate buffer (dev_alloc_skb) fifo:%d\n", 842 fifon); 843 return; 844 } 845 } 846 if (len) { 847 if (fifo->skbuff->len + len < fifo->max_size) { 848 memcpy(skb_put(fifo->skbuff, len), data, len); 849 } else { 850#ifdef CONFIG_HISAX_DEBUG 851 printk(KERN_INFO "HFC-S USB: "); 852 for (i = 0; i < 15; i++) 853 printk("%.2x ", 854 fifo->skbuff->data[fifo->skbuff-> 855 len - 15 + i]); 856 printk("\n"); 857#endif 858 printk(KERN_INFO 859 "HCF-USB: got frame exceeded fifo->max_size:%d on fifo:%d\n", 860 fifo->max_size, fifon); 861 } 862 } 863 if (transp_mode && fifo->skbuff->len >= 128) { 864 fifo->hif->l1l2(fifo->hif, PH_DATA | INDICATION, 865 fifo->skbuff); 866 fifo->skbuff = NULL; 867 return; 868 } 869 /* we have a complete hdlc packet */ 870 if (finish) { 871 if ((!fifo->skbuff->data[fifo->skbuff->len - 1]) 872 && (fifo->skbuff->len > 3)) { 873 /* remove CRC & status */ 874 skb_trim(fifo->skbuff, fifo->skbuff->len - 3); 875 if (fifon == HFCUSB_PCM_RX) { 876 fifo->hif->l1l2(fifo->hif, 877 PH_DATA_E | INDICATION, 878 fifo->skbuff); 879 } else 880 fifo->hif->l1l2(fifo->hif, 881 PH_DATA | INDICATION, 882 fifo->skbuff); 883 fifo->skbuff = NULL; /* buffer was freed from upper layer */ 884 } else { 885 if (fifo->skbuff->len > 3) { 886 printk(KERN_INFO 887 "HFC-S USB: got frame %d bytes but CRC ERROR on fifo:%d!!!\n", 888 fifo->skbuff->len, fifon); 889#ifdef CONFIG_HISAX_DEBUG 890 if (debug > 1) { 891 printk(KERN_INFO "HFC-S USB: "); 892 for (i = 0; i < 15; i++) 893 printk("%.2x ", 894 fifo->skbuff-> 895 data[fifo->skbuff-> 896 len - 15 + i]); 897 printk("\n"); 898 } 899#endif 900 } 901#ifdef CONFIG_HISAX_DEBUG 902 else { 903 printk(KERN_INFO 904 "HFC-S USB: frame to small (%d bytes)!!!\n", 905 fifo->skbuff->len); 906 } 907#endif 908 skb_trim(fifo->skbuff, 0); 909 } 910 } 911} 912 913/***********************************************/ 914/* receive completion routine for all rx fifos */ 915/***********************************************/ 916static void 917rx_complete(struct urb *urb) 918{ 919 int len; 920 int status; 921 __u8 *buf, maxlen, fifon; 922 usb_fifo *fifo = (usb_fifo *) urb->context; 923 hfcusb_data *hfc = fifo->hfc; 924 static __u8 eof[8]; 925#ifdef CONFIG_HISAX_DEBUG 926 __u8 i; 927#endif 928 929 urb->dev = hfc->dev; /* security init */ 930 931 fifon = fifo->fifonum; 932 if ((!fifo->active) || (urb->status)) { 933#ifdef CONFIG_HISAX_DEBUG 934 DBG(USB_DBG, "HFC-S USB: RX-Fifo %i is going down (%i)", 935 fifon, urb->status); 936#endif 937 fifo->urb->interval = 0; /* cancel automatic rescheduling */ 938 if (fifo->skbuff) { 939 dev_kfree_skb_any(fifo->skbuff); 940 fifo->skbuff = NULL; 941 } 942 return; 943 } 944 len = urb->actual_length; 945 buf = fifo->buffer; 946 maxlen = fifo->usb_packet_maxlen; 947 948#ifdef CONFIG_HISAX_DEBUG 949 if ((fifon == 5) && (debug > 1)) { 950 printk(KERN_INFO 951 "HFC-S USB: INT-D-RX lst_urblen:%2d act_urblen:%2d max-urblen:%2d EOF:0x%0x DATA: ", 952 fifo->last_urblen, len, maxlen, eof[5]); 953 for (i = 0; i < len; i++) 954 printk("%.2x ", buf[i]); 955 printk("\n"); 956 } 957#endif 958 959 if (fifo->last_urblen != fifo->usb_packet_maxlen) { 960 /* the threshold mask is in the 2nd status byte */ 961 hfc->threshold_mask = buf[1]; 962 /* the S0 state is in the upper half of the 1st status byte */ 963 state_handler(hfc, buf[0] >> 4); 964 eof[fifon] = buf[0] & 1; 965 /* if we have more than the 2 status bytes -> collect data */ 966 if (len > 2) 967 collect_rx_frame(fifo, buf + 2, 968 urb->actual_length - 2, 969 (len < maxlen) ? eof[fifon] : 0); 970 } else { 971 collect_rx_frame(fifo, buf, urb->actual_length, 972 (len < maxlen) ? eof[fifon] : 0); 973 } 974 fifo->last_urblen = urb->actual_length; 975 status = usb_submit_urb(urb, GFP_ATOMIC); 976 if (status) { 977 printk(KERN_INFO 978 "HFC-S USB: error resubmitting URN at rx_complete...\n"); 979 } 980} /* rx_complete */ 981 982/***************************************************/ 983/* start the interrupt transfer for the given fifo */ 984/***************************************************/ 985static void 986start_int_fifo(usb_fifo * fifo) 987{ 988 int errcode; 989 990 printk(KERN_INFO "HFC-S USB: starting intr IN fifo:%d\n", 991 fifo->fifonum); 992 993 if (!fifo->urb) { 994 fifo->urb = usb_alloc_urb(0, GFP_KERNEL); 995 if (!fifo->urb) 996 return; 997 } 998 usb_fill_int_urb(fifo->urb, fifo->hfc->dev, fifo->pipe, 999 fifo->buffer, fifo->usb_packet_maxlen, 1000 rx_complete, fifo, fifo->intervall); 1001 fifo->active = 1; /* must be marked active */ 1002 errcode = usb_submit_urb(fifo->urb, GFP_KERNEL); 1003 if (errcode) { 1004 printk(KERN_INFO 1005 "HFC-S USB: submit URB error(start_int_info): status:%i\n", 1006 errcode); 1007 fifo->active = 0; 1008 fifo->skbuff = NULL; 1009 } 1010} /* start_int_fifo */ 1011 1012/*****************************/ 1013/* set the B-channel mode */ 1014/*****************************/ 1015static void 1016set_hfcmode(hfcusb_data * hfc, int channel, int mode) 1017{ 1018 __u8 val, idx_table[2] = { 0, 2 }; 1019 1020 if (hfc->disc_flag) { 1021 return; 1022 } 1023#ifdef CONFIG_HISAX_DEBUG 1024 DBG(ISDN_DBG, "HFC-S USB: setting channel %d to mode %d", channel, 1025 mode); 1026#endif 1027 hfc->b_mode[channel] = mode; 1028 1029 /* setup CON_HDLC */ 1030 val = 0; 1031 if (mode != L1_MODE_NULL) 1032 val = 8; /* enable fifo? */ 1033 if (mode == L1_MODE_TRANS) 1034 val |= 2; /* set transparent bit */ 1035 1036 /* set FIFO to transmit register */ 1037 queue_control_request(hfc, HFCUSB_FIFO, idx_table[channel], 1); 1038 queue_control_request(hfc, HFCUSB_CON_HDLC, val, 1); 1039 /* reset fifo */ 1040 queue_control_request(hfc, HFCUSB_INC_RES_F, 2, 1); 1041 /* set FIFO to receive register */ 1042 queue_control_request(hfc, HFCUSB_FIFO, idx_table[channel] + 1, 1); 1043 queue_control_request(hfc, HFCUSB_CON_HDLC, val, 1); 1044 /* reset fifo */ 1045 queue_control_request(hfc, HFCUSB_INC_RES_F, 2, 1); 1046 1047 val = 0x40; 1048 if (hfc->b_mode[0]) 1049 val |= 1; 1050 if (hfc->b_mode[1]) 1051 val |= 2; 1052 queue_control_request(hfc, HFCUSB_SCTRL, val, 1); 1053 1054 val = 0; 1055 if (hfc->b_mode[0]) 1056 val |= 1; 1057 if (hfc->b_mode[1]) 1058 val |= 2; 1059 queue_control_request(hfc, HFCUSB_SCTRL_R, val, 1); 1060 1061 if (mode == L1_MODE_NULL) { 1062 if (channel) 1063 handle_led(hfc, LED_B2_OFF); 1064 else 1065 handle_led(hfc, LED_B1_OFF); 1066 } else { 1067 if (channel) 1068 handle_led(hfc, LED_B2_ON); 1069 else 1070 handle_led(hfc, LED_B1_ON); 1071 } 1072} 1073 1074static void 1075hfc_usb_l2l1(struct hisax_if *my_hisax_if, int pr, void *arg) 1076{ 1077 usb_fifo *fifo = my_hisax_if->priv; 1078 hfcusb_data *hfc = fifo->hfc; 1079 1080 switch (pr) { 1081 case PH_ACTIVATE | REQUEST: 1082 if (fifo->fifonum == HFCUSB_D_TX) { 1083#ifdef CONFIG_HISAX_DEBUG 1084 DBG(ISDN_DBG, 1085 "HFC_USB: hfc_usb_d_l2l1 D-chan: PH_ACTIVATE | REQUEST"); 1086#endif 1087 if (hfc->l1_state != 3 1088 && hfc->l1_state != 7) { 1089 hfc->d_if.ifc.l1l2(&hfc->d_if.ifc, 1090 PH_DEACTIVATE | 1091 INDICATION, 1092 NULL); 1093#ifdef CONFIG_HISAX_DEBUG 1094 DBG(ISDN_DBG, 1095 "HFC-S USB: PH_DEACTIVATE | INDICATION sent (not state 3 or 7)"); 1096#endif 1097 } else { 1098 if (hfc->l1_state == 7) { /* l1 already active */ 1099 hfc->d_if.ifc.l1l2(&hfc-> 1100 d_if. 1101 ifc, 1102 PH_ACTIVATE 1103 | 1104 INDICATION, 1105 NULL); 1106#ifdef CONFIG_HISAX_DEBUG 1107 DBG(ISDN_DBG, 1108 "HFC-S USB: PH_ACTIVATE | INDICATION sent again ;)"); 1109#endif 1110 } else { 1111 /* force sending sending INFO1 */ 1112 queue_control_request(hfc, 1113 HFCUSB_STATES, 1114 0x14, 1115 1); 1116 mdelay(1); 1117 /* start l1 activation */ 1118 queue_control_request(hfc, 1119 HFCUSB_STATES, 1120 0x04, 1121 1); 1122 if (!timer_pending 1123 (&hfc->t3_timer)) { 1124 hfc->t3_timer. 1125 expires = 1126 jiffies + 1127 (HFC_TIMER_T3 * 1128 HZ) / 1000; 1129 add_timer(&hfc-> 1130 t3_timer); 1131 } 1132 } 1133 } 1134 } else { 1135#ifdef CONFIG_HISAX_DEBUG 1136 DBG(ISDN_DBG, 1137 "HFC_USB: hfc_usb_d_l2l1 Bx-chan: PH_ACTIVATE | REQUEST"); 1138#endif 1139 set_hfcmode(hfc, 1140 (fifo->fifonum == 1141 HFCUSB_B1_TX) ? 0 : 1, 1142 (long) arg); 1143 fifo->hif->l1l2(fifo->hif, 1144 PH_ACTIVATE | INDICATION, 1145 NULL); 1146 } 1147 break; 1148 case PH_DEACTIVATE | REQUEST: 1149 if (fifo->fifonum == HFCUSB_D_TX) { 1150#ifdef CONFIG_HISAX_DEBUG 1151 DBG(ISDN_DBG, 1152 "HFC_USB: hfc_usb_d_l2l1 D-chan: PH_DEACTIVATE | REQUEST"); 1153#endif 1154 printk(KERN_INFO 1155 "HFC-S USB: ISDN TE device should not deativate...\n"); 1156 } else { 1157#ifdef CONFIG_HISAX_DEBUG 1158 DBG(ISDN_DBG, 1159 "HFC_USB: hfc_usb_d_l2l1 Bx-chan: PH_DEACTIVATE | REQUEST"); 1160#endif 1161 set_hfcmode(hfc, 1162 (fifo->fifonum == 1163 HFCUSB_B1_TX) ? 0 : 1, 1164 (int) L1_MODE_NULL); 1165 fifo->hif->l1l2(fifo->hif, 1166 PH_DEACTIVATE | INDICATION, 1167 NULL); 1168 } 1169 break; 1170 case PH_DATA | REQUEST: 1171 if (fifo->skbuff && fifo->delete_flg) { 1172 dev_kfree_skb_any(fifo->skbuff); 1173 fifo->skbuff = NULL; 1174 fifo->delete_flg = false; 1175 } 1176 fifo->skbuff = arg; /* we have a new buffer */ 1177 break; 1178 default: 1179 printk(KERN_INFO 1180 "HFC_USB: hfc_usb_d_l2l1: unkown state : %#x\n", 1181 pr); 1182 break; 1183 } 1184} 1185 1186/***************************************************************************/ 1187/* usb_init is called once when a new matching device is detected to setup */ 1188/* main parameters. It registers the driver at the main hisax module. */ 1189/* on success 0 is returned. */ 1190/***************************************************************************/ 1191static int 1192usb_init(hfcusb_data * hfc) 1193{ 1194 usb_fifo *fifo; 1195 int i, err; 1196 u_char b; 1197 struct hisax_b_if *p_b_if[2]; 1198 1199 /* check the chip id */ 1200 if (read_usb(hfc, HFCUSB_CHIP_ID, &b) != 1) { 1201 printk(KERN_INFO "HFC-USB: cannot read chip id\n"); 1202 return (1); 1203 } 1204 if (b != HFCUSB_CHIPID) { 1205 printk(KERN_INFO "HFC-S USB: Invalid chip id 0x%02x\n", b); 1206 return (1); 1207 } 1208 1209 /* first set the needed config, interface and alternate */ 1210 err = usb_set_interface(hfc->dev, hfc->if_used, hfc->alt_used); 1211 1212 /* do Chip reset */ 1213 write_usb(hfc, HFCUSB_CIRM, 8); 1214 /* aux = output, reset off */ 1215 write_usb(hfc, HFCUSB_CIRM, 0x10); 1216 1217 /* set USB_SIZE to match the wMaxPacketSize for INT or BULK transfers */ 1218 write_usb(hfc, HFCUSB_USB_SIZE, 1219 (hfc->packet_size / 8) | ((hfc->packet_size / 8) << 4)); 1220 1221 /* set USB_SIZE_I to match the wMaxPacketSize for ISO transfers */ 1222 write_usb(hfc, HFCUSB_USB_SIZE_I, hfc->iso_packet_size); 1223 1224 /* enable PCM/GCI master mode */ 1225 write_usb(hfc, HFCUSB_MST_MODE1, 0); /* set default values */ 1226 write_usb(hfc, HFCUSB_MST_MODE0, 1); /* enable master mode */ 1227 1228 /* init the fifos */ 1229 write_usb(hfc, HFCUSB_F_THRES, 1230 (HFCUSB_TX_THRESHOLD / 1231 8) | ((HFCUSB_RX_THRESHOLD / 8) << 4)); 1232 1233 fifo = hfc->fifos; 1234 for (i = 0; i < HFCUSB_NUM_FIFOS; i++) { 1235 write_usb(hfc, HFCUSB_FIFO, i); /* select the desired fifo */ 1236 fifo[i].skbuff = NULL; /* init buffer pointer */ 1237 fifo[i].max_size = 1238 (i <= HFCUSB_B2_RX) ? MAX_BCH_SIZE : MAX_DFRAME_LEN; 1239 fifo[i].last_urblen = 0; 1240 /* set 2 bit for D- & E-channel */ 1241 write_usb(hfc, HFCUSB_HDLC_PAR, 1242 ((i <= HFCUSB_B2_RX) ? 0 : 2)); 1243 /* rx hdlc, enable IFF for D-channel */ 1244 write_usb(hfc, HFCUSB_CON_HDLC, 1245 ((i == HFCUSB_D_TX) ? 0x09 : 0x08)); 1246 write_usb(hfc, HFCUSB_INC_RES_F, 2); /* reset the fifo */ 1247 } 1248 1249 write_usb(hfc, HFCUSB_CLKDEL, 0x0f); /* clock delay value */ 1250 write_usb(hfc, HFCUSB_STATES, 3 | 0x10); /* set deactivated mode */ 1251 write_usb(hfc, HFCUSB_STATES, 3); /* enable state machine */ 1252 1253 write_usb(hfc, HFCUSB_SCTRL_R, 0); /* disable both B receivers */ 1254 write_usb(hfc, HFCUSB_SCTRL, 0x40); /* disable B transmitters + capacitive mode */ 1255 1256 /* set both B-channel to not connected */ 1257 hfc->b_mode[0] = L1_MODE_NULL; 1258 hfc->b_mode[1] = L1_MODE_NULL; 1259 1260 hfc->l1_activated = false; 1261 hfc->disc_flag = false; 1262 hfc->led_state = 0; 1263 hfc->led_new_data = 0; 1264 hfc->old_led_state = 0; 1265 1266 /* init the t3 timer */ 1267 init_timer(&hfc->t3_timer); 1268 hfc->t3_timer.data = (long) hfc; 1269 hfc->t3_timer.function = (void *) l1_timer_expire_t3; 1270 1271 /* init the t4 timer */ 1272 init_timer(&hfc->t4_timer); 1273 hfc->t4_timer.data = (long) hfc; 1274 hfc->t4_timer.function = (void *) l1_timer_expire_t4; 1275 1276 /* init the background machinery for control requests */ 1277 hfc->ctrl_read.bRequestType = 0xc0; 1278 hfc->ctrl_read.bRequest = 1; 1279 hfc->ctrl_read.wLength = cpu_to_le16(1); 1280 hfc->ctrl_write.bRequestType = 0x40; 1281 hfc->ctrl_write.bRequest = 0; 1282 hfc->ctrl_write.wLength = 0; 1283 usb_fill_control_urb(hfc->ctrl_urb, 1284 hfc->dev, 1285 hfc->ctrl_out_pipe, 1286 (u_char *) & hfc->ctrl_write, 1287 NULL, 0, ctrl_complete, hfc); 1288 /* Init All Fifos */ 1289 for (i = 0; i < HFCUSB_NUM_FIFOS; i++) { 1290 hfc->fifos[i].iso[0].purb = NULL; 1291 hfc->fifos[i].iso[1].purb = NULL; 1292 hfc->fifos[i].active = 0; 1293 } 1294 /* register Modul to upper Hisax Layers */ 1295 hfc->d_if.owner = THIS_MODULE; 1296 hfc->d_if.ifc.priv = &hfc->fifos[HFCUSB_D_TX]; 1297 hfc->d_if.ifc.l2l1 = hfc_usb_l2l1; 1298 for (i = 0; i < 2; i++) { 1299 hfc->b_if[i].ifc.priv = &hfc->fifos[HFCUSB_B1_TX + i * 2]; 1300 hfc->b_if[i].ifc.l2l1 = hfc_usb_l2l1; 1301 p_b_if[i] = &hfc->b_if[i]; 1302 } 1303 /* default Prot: EURO ISDN, should be a module_param */ 1304 hfc->protocol = 2; 1305 i = hisax_register(&hfc->d_if, p_b_if, "hfc_usb", hfc->protocol); 1306 if (i) { 1307 printk(KERN_INFO "HFC-S USB: hisax_register -> %d\n", i); 1308 return i; 1309 } 1310 1311#ifdef CONFIG_HISAX_DEBUG 1312 hfc_debug = debug; 1313#endif 1314 1315 for (i = 0; i < 4; i++) 1316 hfc->fifos[i].hif = &p_b_if[i / 2]->ifc; 1317 for (i = 4; i < 8; i++) 1318 hfc->fifos[i].hif = &hfc->d_if.ifc; 1319 1320 /* 3 (+1) INT IN + 3 ISO OUT */ 1321 if (hfc->cfg_used == CNF_3INT3ISO || hfc->cfg_used == CNF_4INT3ISO) { 1322 start_int_fifo(hfc->fifos + HFCUSB_D_RX); 1323 if (hfc->fifos[HFCUSB_PCM_RX].pipe) 1324 start_int_fifo(hfc->fifos + HFCUSB_PCM_RX); 1325 start_int_fifo(hfc->fifos + HFCUSB_B1_RX); 1326 start_int_fifo(hfc->fifos + HFCUSB_B2_RX); 1327 } 1328 /* 3 (+1) ISO IN + 3 ISO OUT */ 1329 if (hfc->cfg_used == CNF_3ISO3ISO || hfc->cfg_used == CNF_4ISO3ISO) { 1330 start_isoc_chain(hfc->fifos + HFCUSB_D_RX, ISOC_PACKETS_D, 1331 rx_iso_complete, 16); 1332 if (hfc->fifos[HFCUSB_PCM_RX].pipe) 1333 start_isoc_chain(hfc->fifos + HFCUSB_PCM_RX, 1334 ISOC_PACKETS_D, rx_iso_complete, 1335 16); 1336 start_isoc_chain(hfc->fifos + HFCUSB_B1_RX, ISOC_PACKETS_B, 1337 rx_iso_complete, 16); 1338 start_isoc_chain(hfc->fifos + HFCUSB_B2_RX, ISOC_PACKETS_B, 1339 rx_iso_complete, 16); 1340 } 1341 1342 start_isoc_chain(hfc->fifos + HFCUSB_D_TX, ISOC_PACKETS_D, 1343 tx_iso_complete, 1); 1344 start_isoc_chain(hfc->fifos + HFCUSB_B1_TX, ISOC_PACKETS_B, 1345 tx_iso_complete, 1); 1346 start_isoc_chain(hfc->fifos + HFCUSB_B2_TX, ISOC_PACKETS_B, 1347 tx_iso_complete, 1); 1348 1349 handle_led(hfc, LED_POWER_ON); 1350 1351 return (0); 1352} /* usb_init */ 1353 1354/*************************************************/ 1355/* function called to probe a new plugged device */ 1356/*************************************************/ 1357static int 1358hfc_usb_probe(struct usb_interface *intf, const struct usb_device_id *id) 1359{ 1360 struct usb_device *dev = interface_to_usbdev(intf); 1361 hfcusb_data *context; 1362 struct usb_host_interface *iface = intf->cur_altsetting; 1363 struct usb_host_interface *iface_used = NULL; 1364 struct usb_host_endpoint *ep; 1365 int ifnum = iface->desc.bInterfaceNumber; 1366 int i, idx, alt_idx, probe_alt_setting, vend_idx, cfg_used, *vcf, 1367 attr, cfg_found, cidx, ep_addr; 1368 int cmptbl[16], small_match, iso_packet_size, packet_size, 1369 alt_used = 0; 1370 hfcsusb_vdata *driver_info; 1371 1372 vend_idx = 0xffff; 1373 for (i = 0; hfcusb_idtab[i].idVendor; i++) { 1374 if ((le16_to_cpu(dev->descriptor.idVendor) == hfcusb_idtab[i].idVendor) 1375 && (le16_to_cpu(dev->descriptor.idProduct) == hfcusb_idtab[i].idProduct)) { 1376 vend_idx = i; 1377 continue; 1378 } 1379 } 1380 1381#ifdef CONFIG_HISAX_DEBUG 1382 DBG(USB_DBG, 1383 "HFC-USB: probing interface(%d) actalt(%d) minor(%d)\n", ifnum, 1384 iface->desc.bAlternateSetting, intf->minor); 1385#endif 1386 printk(KERN_INFO 1387 "HFC-S USB: probing interface(%d) actalt(%d) minor(%d)\n", 1388 ifnum, iface->desc.bAlternateSetting, intf->minor); 1389 1390 if (vend_idx != 0xffff) { 1391 /* if vendor and product ID is OK, start probing alternate settings */ 1392 alt_idx = 0; 1393 small_match = 0xffff; 1394 1395 /* default settings */ 1396 iso_packet_size = 16; 1397 packet_size = 64; 1398 1399 while (alt_idx < intf->num_altsetting) { 1400 iface = intf->altsetting + alt_idx; 1401 probe_alt_setting = iface->desc.bAlternateSetting; 1402 cfg_used = 0; 1403 1404 /* check for config EOL element */ 1405 while (validconf[cfg_used][0]) { 1406 cfg_found = true; 1407 vcf = validconf[cfg_used]; 1408 /* first endpoint descriptor */ 1409 ep = iface->endpoint; 1410#ifdef CONFIG_HISAX_DEBUG 1411 DBG(USB_DBG, 1412 "HFC-S USB: (if=%d alt=%d cfg_used=%d)\n", 1413 ifnum, probe_alt_setting, cfg_used); 1414#endif 1415 memcpy(cmptbl, vcf, 16 * sizeof(int)); 1416 1417 /* check for all endpoints in this alternate setting */ 1418 for (i = 0; i < iface->desc.bNumEndpoints; 1419 i++) { 1420 ep_addr = 1421 ep->desc.bEndpointAddress; 1422 /* get endpoint base */ 1423 idx = ((ep_addr & 0x7f) - 1) * 2; 1424 if (ep_addr & 0x80) 1425 idx++; 1426 attr = ep->desc.bmAttributes; 1427 if (cmptbl[idx] == EP_NUL) { 1428 cfg_found = false; 1429 } 1430 if (attr == USB_ENDPOINT_XFER_INT 1431 && cmptbl[idx] == EP_INT) 1432 cmptbl[idx] = EP_NUL; 1433 if (attr == USB_ENDPOINT_XFER_BULK 1434 && cmptbl[idx] == EP_BLK) 1435 cmptbl[idx] = EP_NUL; 1436 if (attr == USB_ENDPOINT_XFER_ISOC 1437 && cmptbl[idx] == EP_ISO) 1438 cmptbl[idx] = EP_NUL; 1439 1440 /* check if all INT endpoints match minimum interval */ 1441 if (attr == USB_ENDPOINT_XFER_INT 1442 && ep->desc.bInterval < 1443 vcf[17]) { 1444#ifdef CONFIG_HISAX_DEBUG 1445 if (cfg_found) 1446 DBG(USB_DBG, 1447 "HFC-S USB: Interrupt Endpoint interval < %d found - skipping config", 1448 vcf[17]); 1449#endif 1450 cfg_found = false; 1451 } 1452 ep++; 1453 } 1454 for (i = 0; i < 16; i++) { 1455 /* all entries must be EP_NOP or EP_NUL for a valid config */ 1456 if (cmptbl[i] != EP_NOP 1457 && cmptbl[i] != EP_NUL) 1458 cfg_found = false; 1459 } 1460 if (cfg_found) { 1461 if (cfg_used < small_match) { 1462 small_match = cfg_used; 1463 alt_used = 1464 probe_alt_setting; 1465 iface_used = iface; 1466 } 1467#ifdef CONFIG_HISAX_DEBUG 1468 DBG(USB_DBG, 1469 "HFC-USB: small_match=%x %x\n", 1470 small_match, alt_used); 1471#endif 1472 } 1473 cfg_used++; 1474 } 1475 alt_idx++; 1476 } /* (alt_idx < intf->num_altsetting) */ 1477 1478 /* found a valid USB Ta Endpint config */ 1479 if (small_match != 0xffff) { 1480 iface = iface_used; 1481 if (! 1482 (context = 1483 kzalloc(sizeof(hfcusb_data), GFP_KERNEL))) 1484 return (-ENOMEM); /* got no mem */ 1485 1486 ep = iface->endpoint; 1487 vcf = validconf[small_match]; 1488 1489 for (i = 0; i < iface->desc.bNumEndpoints; i++) { 1490 ep_addr = ep->desc.bEndpointAddress; 1491 /* get endpoint base */ 1492 idx = ((ep_addr & 0x7f) - 1) * 2; 1493 if (ep_addr & 0x80) 1494 idx++; 1495 cidx = idx & 7; 1496 attr = ep->desc.bmAttributes; 1497 1498 /* init Endpoints */ 1499 if (vcf[idx] != EP_NOP 1500 && vcf[idx] != EP_NUL) { 1501 switch (attr) { 1502 case USB_ENDPOINT_XFER_INT: 1503 context-> 1504 fifos[cidx]. 1505 pipe = 1506 usb_rcvintpipe 1507 (dev, 1508 ep->desc. 1509 bEndpointAddress); 1510 context-> 1511 fifos[cidx]. 1512 usb_transfer_mode 1513 = USB_INT; 1514 packet_size = 1515 le16_to_cpu(ep->desc.wMaxPacketSize); 1516 break; 1517 case USB_ENDPOINT_XFER_BULK: 1518 if (ep_addr & 0x80) 1519 context-> 1520 fifos 1521 [cidx]. 1522 pipe = 1523 usb_rcvbulkpipe 1524 (dev, 1525 ep-> 1526 desc. 1527 bEndpointAddress); 1528 else 1529 context-> 1530 fifos 1531 [cidx]. 1532 pipe = 1533 usb_sndbulkpipe 1534 (dev, 1535 ep-> 1536 desc. 1537 bEndpointAddress); 1538 context-> 1539 fifos[cidx]. 1540 usb_transfer_mode 1541 = USB_BULK; 1542 packet_size = 1543 le16_to_cpu(ep->desc.wMaxPacketSize); 1544 break; 1545 case USB_ENDPOINT_XFER_ISOC: 1546 if (ep_addr & 0x80) 1547 context-> 1548 fifos 1549 [cidx]. 1550 pipe = 1551 usb_rcvisocpipe 1552 (dev, 1553 ep-> 1554 desc. 1555 bEndpointAddress); 1556 else 1557 context-> 1558 fifos 1559 [cidx]. 1560 pipe = 1561 usb_sndisocpipe 1562 (dev, 1563 ep-> 1564 desc. 1565 bEndpointAddress); 1566 context-> 1567 fifos[cidx]. 1568 usb_transfer_mode 1569 = USB_ISOC; 1570 iso_packet_size = 1571 le16_to_cpu(ep->desc.wMaxPacketSize); 1572 break; 1573 default: 1574 context-> 1575 fifos[cidx]. 1576 pipe = 0; 1577 } /* switch attribute */ 1578 1579 if (context->fifos[cidx].pipe) { 1580 context->fifos[cidx]. 1581 fifonum = cidx; 1582 context->fifos[cidx].hfc = 1583 context; 1584 context->fifos[cidx].usb_packet_maxlen = 1585 le16_to_cpu(ep->desc.wMaxPacketSize); 1586 context->fifos[cidx]. 1587 intervall = 1588 ep->desc.bInterval; 1589 context->fifos[cidx]. 1590 skbuff = NULL; 1591 } 1592 } 1593 ep++; 1594 } 1595 context->dev = dev; /* save device */ 1596 context->if_used = ifnum; /* save used interface */ 1597 context->alt_used = alt_used; /* and alternate config */ 1598 context->ctrl_paksize = dev->descriptor.bMaxPacketSize0; /* control size */ 1599 context->cfg_used = vcf[16]; /* store used config */ 1600 context->vend_idx = vend_idx; /* store found vendor */ 1601 context->packet_size = packet_size; 1602 context->iso_packet_size = iso_packet_size; 1603 1604 /* create the control pipes needed for register access */ 1605 context->ctrl_in_pipe = 1606 usb_rcvctrlpipe(context->dev, 0); 1607 context->ctrl_out_pipe = 1608 usb_sndctrlpipe(context->dev, 0); 1609 context->ctrl_urb = usb_alloc_urb(0, GFP_KERNEL); 1610 1611 driver_info = 1612 (hfcsusb_vdata *) hfcusb_idtab[vend_idx]. 1613 driver_info; 1614 printk(KERN_INFO "HFC-S USB: detected \"%s\"\n", 1615 driver_info->vend_name); 1616#ifdef CONFIG_HISAX_DEBUG 1617 DBG(USB_DBG, 1618 "HFC-S USB: Endpoint-Config: %s (if=%d alt=%d)\n", 1619 conf_str[small_match], context->if_used, 1620 context->alt_used); 1621 printk(KERN_INFO 1622 "HFC-S USB: E-channel (\"ECHO:\") logging "); 1623 if (validconf[small_match][18]) 1624 printk(" possible\n"); 1625 else 1626 printk("NOT possible\n"); 1627#endif 1628 /* init the chip and register the driver */ 1629 if (usb_init(context)) { 1630 usb_kill_urb(context->ctrl_urb); 1631 usb_free_urb(context->ctrl_urb); 1632 context->ctrl_urb = NULL; 1633 kfree(context); 1634 return (-EIO); 1635 } 1636 usb_set_intfdata(intf, context); 1637 return (0); 1638 } 1639 } else { 1640 printk(KERN_INFO 1641 "HFC-S USB: no valid vendor found in USB descriptor\n"); 1642 } 1643 return (-EIO); 1644} 1645 1646/****************************************************/ 1647/* function called when an active device is removed */ 1648/****************************************************/ 1649static void 1650hfc_usb_disconnect(struct usb_interface 1651 *intf) 1652{ 1653 hfcusb_data *context = usb_get_intfdata(intf); 1654 int i; 1655 printk(KERN_INFO "HFC-S USB: device disconnect\n"); 1656 context->disc_flag = true; 1657 usb_set_intfdata(intf, NULL); 1658 if (!context) 1659 return; 1660 if (timer_pending(&context->t3_timer)) 1661 del_timer(&context->t3_timer); 1662 if (timer_pending(&context->t4_timer)) 1663 del_timer(&context->t4_timer); 1664 /* tell all fifos to terminate */ 1665 for (i = 0; i < HFCUSB_NUM_FIFOS; i++) { 1666 if (context->fifos[i].usb_transfer_mode == USB_ISOC) { 1667 if (context->fifos[i].active > 0) { 1668 stop_isoc_chain(&context->fifos[i]); 1669#ifdef CONFIG_HISAX_DEBUG 1670 DBG(USB_DBG, 1671 "HFC-S USB: hfc_usb_disconnect: stopping ISOC chain Fifo no %i", 1672 i); 1673#endif 1674 } 1675 } else { 1676 if (context->fifos[i].active > 0) { 1677 context->fifos[i].active = 0; 1678#ifdef CONFIG_HISAX_DEBUG 1679 DBG(USB_DBG, 1680 "HFC-S USB: hfc_usb_disconnect: unlinking URB for Fifo no %i", 1681 i); 1682#endif 1683 } 1684 usb_kill_urb(context->fifos[i].urb); 1685 usb_free_urb(context->fifos[i].urb); 1686 context->fifos[i].urb = NULL; 1687 } 1688 context->fifos[i].active = 0; 1689 } 1690 usb_kill_urb(context->ctrl_urb); 1691 usb_free_urb(context->ctrl_urb); 1692 context->ctrl_urb = NULL; 1693 hisax_unregister(&context->d_if); 1694 kfree(context); /* free our structure again */ 1695} /* hfc_usb_disconnect */ 1696 1697/************************************/ 1698/* our driver information structure */ 1699/************************************/ 1700static struct usb_driver hfc_drv = { 1701 .name = "hfc_usb", 1702 .id_table = hfcusb_idtab, 1703 .probe = hfc_usb_probe, 1704 .disconnect = hfc_usb_disconnect, 1705}; 1706static void __exit 1707hfc_usb_exit(void) 1708{ 1709#ifdef CONFIG_HISAX_DEBUG 1710 DBG(USB_DBG, "HFC-S USB: calling \"hfc_usb_exit\" ..."); 1711#endif 1712 usb_deregister(&hfc_drv); /* release our driver */ 1713 printk(KERN_INFO "HFC-S USB: module removed\n"); 1714} 1715 1716static int __init 1717hfc_usb_init(void) 1718{ 1719#ifndef CONFIG_HISAX_DEBUG 1720 unsigned int debug = -1; 1721#endif 1722 char revstr[30], datestr[30], dummy[30]; 1723 sscanf(hfcusb_revision, 1724 "%s %s $ %s %s %s $ ", dummy, revstr, 1725 dummy, datestr, dummy); 1726 printk(KERN_INFO 1727 "HFC-S USB: driver module revision %s date %s loaded, (debug=%i)\n", 1728 revstr, datestr, debug); 1729 if (usb_register(&hfc_drv)) { 1730 printk(KERN_INFO 1731 "HFC-S USB: Unable to register HFC-S USB module at usb stack\n"); 1732 return (-1); /* unable to register */ 1733 } 1734 return (0); 1735} 1736 1737module_init(hfc_usb_init); 1738module_exit(hfc_usb_exit); 1739MODULE_AUTHOR(DRIVER_AUTHOR); 1740MODULE_DESCRIPTION(DRIVER_DESC); 1741MODULE_LICENSE("GPL"); 1742MODULE_DEVICE_TABLE(usb, hfcusb_idtab); 1743