hfc_usb.c revision d6a1a64aec2b2e2e13b629ed72afd319d8bce5da
1/* 2 * hfc_usb.c 3 * 4 * $Id: hfc_usb.c,v 4.36 2005/04/08 09:55:13 martinb1 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/config.h> 36#include <linux/init.h> 37#include <linux/module.h> 38#include <linux/kernel_stat.h> 39#include <linux/usb.h> 40#include <linux/kernel.h> 41#include <linux/smp_lock.h> 42#include <linux/sched.h> 43#include "hisax.h" 44#include "hisax_if.h" 45#include "hfc_usb.h" 46 47static const char *hfcusb_revision = 48 "$Revision: 4.36 $ $Date: 2005/04/08 09:55:13 $ "; 49 50/* Hisax debug support 51* use "modprobe debug=x" where x is bitfield of USB_DBG & ISDN_DBG 52*/ 53#ifdef CONFIG_HISAX_DEBUG 54#include <linux/moduleparam.h> 55#define __debug_variable hfc_debug 56#include "hisax_debug.h" 57static u_int debug; 58module_param(debug, uint, 0); 59static int hfc_debug; 60#endif 61 62/* private vendor specific data */ 63typedef struct { 64 __u8 led_scheme; // led display scheme 65 signed short led_bits[8]; // array of 8 possible LED bitmask settings 66 char *vend_name; // device name 67} hfcsusb_vdata; 68 69/****************************************/ 70/* data defining the devices to be used */ 71/****************************************/ 72static struct usb_device_id hfcusb_idtab[] = { 73 { 74 USB_DEVICE(0x0959, 0x2bd0), 75 .driver_info = (unsigned long) &((hfcsusb_vdata) 76 {LED_OFF, {4, 0, 2, 1}, 77 "ISDN USB TA (Cologne Chip HFC-S USB based)"}), 78 }, 79 { 80 USB_DEVICE(0x0675, 0x1688), 81 .driver_info = (unsigned long) &((hfcsusb_vdata) 82 {LED_SCHEME1, {1, 2, 0, 0}, 83 "DrayTek miniVigor 128 USB ISDN TA"}), 84 }, 85 { 86 USB_DEVICE(0x07b0, 0x0007), 87 .driver_info = (unsigned long) &((hfcsusb_vdata) 88 {LED_SCHEME1, {0x80, -64, -32, -16}, 89 "Billion tiny USB ISDN TA 128"}), 90 }, 91 { 92 USB_DEVICE(0x0742, 0x2008), 93 .driver_info = (unsigned long) &((hfcsusb_vdata) 94 {LED_SCHEME1, {4, 0, 2, 1}, 95 "Stollmann USB TA"}), 96 }, 97 { 98 USB_DEVICE(0x0742, 0x2009), 99 .driver_info = (unsigned long) &((hfcsusb_vdata) 100 {LED_SCHEME1, {4, 0, 2, 1}, 101 "Aceex USB ISDN TA"}), 102 }, 103 { 104 USB_DEVICE(0x0742, 0x200A), 105 .driver_info = (unsigned long) &((hfcsusb_vdata) 106 {LED_SCHEME1, {4, 0, 2, 1}, 107 "OEM USB ISDN TA"}), 108 }, 109 { 110 USB_DEVICE(0x08e3, 0x0301), 111 .driver_info = (unsigned long) &((hfcsusb_vdata) 112 {LED_SCHEME1, {2, 0, 1, 4}, 113 "Olitec USB RNIS"}), 114 }, 115 { 116 USB_DEVICE(0x07fa, 0x0846), 117 .driver_info = (unsigned long) &((hfcsusb_vdata) 118 {LED_SCHEME1, {0x80, -64, -32, -16}, 119 "Bewan Modem RNIS USB"}), 120 }, 121 { 122 USB_DEVICE(0x07fa, 0x0847), 123 .driver_info = (unsigned long) &((hfcsusb_vdata) 124 {LED_SCHEME1, {0x80, -64, -32, -16}, 125 "Djinn Numeris USB"}), 126 }, 127 { 128 USB_DEVICE(0x07b0, 0x0006), 129 .driver_info = (unsigned long) &((hfcsusb_vdata) 130 {LED_SCHEME1, {0x80, -64, -32, -16}, 131 "Twister ISDN TA"}), 132 }, 133 { } 134}; 135 136/***************************************************************/ 137/* structure defining input+output fifos (interrupt/bulk mode) */ 138/***************************************************************/ 139struct usb_fifo; /* forward definition */ 140typedef struct iso_urb_struct { 141 struct urb *purb; 142 __u8 buffer[ISO_BUFFER_SIZE]; /* buffer incoming/outgoing data */ 143 struct usb_fifo *owner_fifo; /* pointer to owner fifo */ 144} iso_urb_struct; 145 146 147struct hfcusb_data; /* forward definition */ 148typedef struct usb_fifo { 149 int fifonum; /* fifo index attached to this structure */ 150 int active; /* fifo is currently active */ 151 struct hfcusb_data *hfc; /* pointer to main structure */ 152 int pipe; /* address of endpoint */ 153 __u8 usb_packet_maxlen; /* maximum length for usb transfer */ 154 unsigned int max_size; /* maximum size of receive/send packet */ 155 __u8 intervall; /* interrupt interval */ 156 struct sk_buff *skbuff; /* actual used buffer */ 157 struct urb *urb; /* transfer structure for usb routines */ 158 __u8 buffer[128]; /* buffer incoming/outgoing data */ 159 int bit_line; /* how much bits are in the fifo? */ 160 161 volatile __u8 usb_transfer_mode; /* switched between ISO and INT */ 162 iso_urb_struct iso[2]; /* need two urbs to have one always for pending */ 163 struct hisax_if *hif; /* hisax interface */ 164 int delete_flg; /* only delete skbuff once */ 165 int last_urblen; /* remember length of last packet */ 166 167} usb_fifo; 168 169/*********************************************/ 170/* structure holding all data for one device */ 171/*********************************************/ 172typedef struct hfcusb_data { 173 /* HiSax Interface for loadable Layer1 drivers */ 174 struct hisax_d_if d_if; /* see hisax_if.h */ 175 struct hisax_b_if b_if[2]; /* see hisax_if.h */ 176 int protocol; 177 178 struct usb_device *dev; /* our device */ 179 int if_used; /* used interface number */ 180 int alt_used; /* used alternate config */ 181 int ctrl_paksize; /* control pipe packet size */ 182 int ctrl_in_pipe, ctrl_out_pipe; /* handles for control pipe */ 183 int cfg_used; /* configuration index used */ 184 int vend_idx; /* vendor found */ 185 int b_mode[2]; /* B-channel mode */ 186 int l1_activated; /* layer 1 activated */ 187 int disc_flag; /* TRUE if device was disonnected to avoid some USB actions */ 188 int packet_size, iso_packet_size; 189 190 /* control pipe background handling */ 191 ctrl_buft ctrl_buff[HFC_CTRL_BUFSIZE]; /* buffer holding queued data */ 192 volatile int ctrl_in_idx, ctrl_out_idx, ctrl_cnt; /* input/output pointer + count */ 193 struct urb *ctrl_urb; /* transfer structure for control channel */ 194 195 struct usb_ctrlrequest ctrl_write; /* buffer for control write request */ 196 struct usb_ctrlrequest ctrl_read; /* same for read request */ 197 198 __u8 old_led_state, led_state, led_new_data, led_b_active; 199 200 volatile __u8 threshold_mask; /* threshold actually reported */ 201 volatile __u8 bch_enables; /* or mask for sctrl_r and sctrl register values */ 202 203 usb_fifo fifos[HFCUSB_NUM_FIFOS]; /* structure holding all fifo data */ 204 205 volatile __u8 l1_state; /* actual l1 state */ 206 struct timer_list t3_timer; /* timer 3 for activation/deactivation */ 207 struct timer_list t4_timer; /* timer 4 for activation/deactivation */ 208} hfcusb_data; 209 210 211static void collect_rx_frame(usb_fifo * fifo, __u8 * data, int len, 212 int finish); 213 214 215static inline const char * 216symbolic(struct hfcusb_symbolic_list list[], const int num) 217{ 218 int i; 219 for (i = 0; list[i].name != NULL; i++) 220 if (list[i].num == num) 221 return (list[i].name); 222 return "<unkown ERROR>"; 223} 224 225 226/******************************************************/ 227/* start next background transfer for control channel */ 228/******************************************************/ 229static void 230ctrl_start_transfer(hfcusb_data * hfc) 231{ 232 if (hfc->ctrl_cnt) { 233 hfc->ctrl_urb->pipe = hfc->ctrl_out_pipe; 234 hfc->ctrl_urb->setup_packet = (u_char *) & hfc->ctrl_write; 235 hfc->ctrl_urb->transfer_buffer = NULL; 236 hfc->ctrl_urb->transfer_buffer_length = 0; 237 hfc->ctrl_write.wIndex = 238 hfc->ctrl_buff[hfc->ctrl_out_idx].hfc_reg; 239 hfc->ctrl_write.wValue = 240 hfc->ctrl_buff[hfc->ctrl_out_idx].reg_val; 241 242 usb_submit_urb(hfc->ctrl_urb, GFP_ATOMIC); /* start transfer */ 243 } 244} /* ctrl_start_transfer */ 245 246/************************************/ 247/* queue a control transfer request */ 248/* return 0 on success. */ 249/************************************/ 250static int 251queue_control_request(hfcusb_data * hfc, __u8 reg, __u8 val, int action) 252{ 253 ctrl_buft *buf; 254 255 if (hfc->ctrl_cnt >= HFC_CTRL_BUFSIZE) 256 return (1); /* no space left */ 257 buf = &hfc->ctrl_buff[hfc->ctrl_in_idx]; /* pointer to new index */ 258 buf->hfc_reg = reg; 259 buf->reg_val = val; 260 buf->action = action; 261 if (++hfc->ctrl_in_idx >= HFC_CTRL_BUFSIZE) 262 hfc->ctrl_in_idx = 0; /* pointer wrap */ 263 if (++hfc->ctrl_cnt == 1) 264 ctrl_start_transfer(hfc); 265 return (0); 266} /* queue_control_request */ 267 268static int 269control_action_handler(hfcusb_data * hfc, int reg, int val, int action) 270{ 271 if (!action) 272 return (1); /* no action defined */ 273 return (0); 274} 275 276/***************************************************************/ 277/* control completion routine handling background control cmds */ 278/***************************************************************/ 279static void 280ctrl_complete(struct urb *urb, struct pt_regs *regs) 281{ 282 hfcusb_data *hfc = (hfcusb_data *) urb->context; 283 ctrl_buft *buf; 284 285 urb->dev = hfc->dev; 286 if (hfc->ctrl_cnt) { 287 buf = &hfc->ctrl_buff[hfc->ctrl_out_idx]; 288 control_action_handler(hfc, buf->hfc_reg, buf->reg_val, 289 buf->action); 290 291 hfc->ctrl_cnt--; /* decrement actual count */ 292 if (++hfc->ctrl_out_idx >= HFC_CTRL_BUFSIZE) 293 hfc->ctrl_out_idx = 0; /* pointer wrap */ 294 295 ctrl_start_transfer(hfc); /* start next transfer */ 296 } 297} /* ctrl_complete */ 298 299/***************************************************/ 300/* write led data to auxport & invert if necessary */ 301/***************************************************/ 302static void 303write_led(hfcusb_data * hfc, __u8 led_state) 304{ 305 if (led_state != hfc->old_led_state) { 306 hfc->old_led_state = led_state; 307 queue_control_request(hfc, HFCUSB_P_DATA, led_state, 1); 308 } 309} 310 311/**************************/ 312/* handle LED bits */ 313/**************************/ 314static void 315set_led_bit(hfcusb_data * hfc, signed short led_bits, int unset) 316{ 317 if (unset) { 318 if (led_bits < 0) 319 hfc->led_state |= abs(led_bits); 320 else 321 hfc->led_state &= ~led_bits; 322 } else { 323 if (led_bits < 0) 324 hfc->led_state &= ~abs(led_bits); 325 else 326 hfc->led_state |= led_bits; 327 } 328} 329 330/**************************/ 331/* handle LED requests */ 332/**************************/ 333static void 334handle_led(hfcusb_data * hfc, int event) 335{ 336 hfcsusb_vdata *driver_info = 337 (hfcsusb_vdata *) hfcusb_idtab[hfc->vend_idx].driver_info; 338 339 /* if no scheme -> no LED action */ 340 if (driver_info->led_scheme == LED_OFF) 341 return; 342 343 switch (event) { 344 case LED_POWER_ON: 345 set_led_bit(hfc, driver_info->led_bits[0], 346 0); 347 set_led_bit(hfc, driver_info->led_bits[1], 348 1); 349 set_led_bit(hfc, driver_info->led_bits[2], 350 1); 351 set_led_bit(hfc, driver_info->led_bits[3], 352 1); 353 break; 354 case LED_POWER_OFF: /* no Power off handling */ 355 break; 356 case LED_S0_ON: 357 set_led_bit(hfc, driver_info->led_bits[1], 358 0); 359 break; 360 case LED_S0_OFF: 361 set_led_bit(hfc, driver_info->led_bits[1], 362 1); 363 break; 364 case LED_B1_ON: 365 set_led_bit(hfc, driver_info->led_bits[2], 366 0); 367 break; 368 case LED_B1_OFF: 369 set_led_bit(hfc, driver_info->led_bits[2], 370 1); 371 break; 372 case LED_B2_ON: 373 set_led_bit(hfc, driver_info->led_bits[3], 374 0); 375 break; 376 case LED_B2_OFF: 377 set_led_bit(hfc, driver_info->led_bits[3], 378 1); 379 break; 380 } 381 write_led(hfc, hfc->led_state); 382} 383 384/********************************/ 385/* called when timer t3 expires */ 386/********************************/ 387static void 388l1_timer_expire_t3(hfcusb_data * hfc) 389{ 390 hfc->d_if.ifc.l1l2(&hfc->d_if.ifc, PH_DEACTIVATE | INDICATION, 391 NULL); 392#ifdef CONFIG_HISAX_DEBUG 393 DBG(ISDN_DBG, 394 "HFC-S USB: PH_DEACTIVATE | INDICATION sent (T3 expire)"); 395#endif 396 hfc->l1_activated = FALSE; 397 handle_led(hfc, LED_S0_OFF); 398 /* deactivate : */ 399 queue_control_request(hfc, HFCUSB_STATES, 0x10, 1); 400 queue_control_request(hfc, HFCUSB_STATES, 3, 1); 401} 402 403/********************************/ 404/* called when timer t4 expires */ 405/********************************/ 406static void 407l1_timer_expire_t4(hfcusb_data * hfc) 408{ 409 hfc->d_if.ifc.l1l2(&hfc->d_if.ifc, PH_DEACTIVATE | INDICATION, 410 NULL); 411#ifdef CONFIG_HISAX_DEBUG 412 DBG(ISDN_DBG, 413 "HFC-S USB: PH_DEACTIVATE | INDICATION sent (T4 expire)"); 414#endif 415 hfc->l1_activated = FALSE; 416 handle_led(hfc, LED_S0_OFF); 417} 418 419/*****************************/ 420/* handle S0 state changes */ 421/*****************************/ 422static void 423state_handler(hfcusb_data * hfc, __u8 state) 424{ 425 __u8 old_state; 426 427 old_state = hfc->l1_state; 428 if (state == old_state || state < 1 || state > 8) 429 return; 430 431#ifdef CONFIG_HISAX_DEBUG 432 DBG(ISDN_DBG, "HFC-S USB: new S0 state:%d old_state:%d", state, 433 old_state); 434#endif 435 if (state < 4 || state == 7 || state == 8) { 436 if (timer_pending(&hfc->t3_timer)) 437 del_timer(&hfc->t3_timer); 438#ifdef CONFIG_HISAX_DEBUG 439 DBG(ISDN_DBG, "HFC-S USB: T3 deactivated"); 440#endif 441 } 442 if (state >= 7) { 443 if (timer_pending(&hfc->t4_timer)) 444 del_timer(&hfc->t4_timer); 445#ifdef CONFIG_HISAX_DEBUG 446 DBG(ISDN_DBG, "HFC-S USB: T4 deactivated"); 447#endif 448 } 449 450 if (state == 7 && !hfc->l1_activated) { 451 hfc->d_if.ifc.l1l2(&hfc->d_if.ifc, 452 PH_ACTIVATE | INDICATION, NULL); 453#ifdef CONFIG_HISAX_DEBUG 454 DBG(ISDN_DBG, "HFC-S USB: PH_ACTIVATE | INDICATION sent"); 455#endif 456 hfc->l1_activated = TRUE; 457 handle_led(hfc, LED_S0_ON); 458 } else if (state <= 3 /* && activated */ ) { 459 if (old_state == 7 || old_state == 8) { 460#ifdef CONFIG_HISAX_DEBUG 461 DBG(ISDN_DBG, "HFC-S USB: T4 activated"); 462#endif 463 if (!timer_pending(&hfc->t4_timer)) { 464 hfc->t4_timer.expires = 465 jiffies + (HFC_TIMER_T4 * HZ) / 1000; 466 add_timer(&hfc->t4_timer); 467 } 468 } else { 469 hfc->d_if.ifc.l1l2(&hfc->d_if.ifc, 470 PH_DEACTIVATE | INDICATION, 471 NULL); 472#ifdef CONFIG_HISAX_DEBUG 473 DBG(ISDN_DBG, 474 "HFC-S USB: PH_DEACTIVATE | INDICATION sent"); 475#endif 476 hfc->l1_activated = FALSE; 477 handle_led(hfc, LED_S0_OFF); 478 } 479 } 480 hfc->l1_state = state; 481} 482 483/* prepare iso urb */ 484static void 485fill_isoc_urb(struct urb *urb, struct usb_device *dev, unsigned int pipe, 486 void *buf, int num_packets, int packet_size, int interval, 487 usb_complete_t complete, void *context) 488{ 489 int k; 490 491 spin_lock_init(&urb->lock); 492 urb->dev = dev; 493 urb->pipe = pipe; 494 urb->complete = complete; 495 urb->number_of_packets = num_packets; 496 urb->transfer_buffer_length = packet_size * num_packets; 497 urb->context = context; 498 urb->transfer_buffer = buf; 499 urb->transfer_flags = URB_ISO_ASAP; 500 urb->actual_length = 0; 501 urb->interval = interval; 502 for (k = 0; k < num_packets; k++) { 503 urb->iso_frame_desc[k].offset = packet_size * k; 504 urb->iso_frame_desc[k].length = packet_size; 505 urb->iso_frame_desc[k].actual_length = 0; 506 } 507} 508 509/* allocs urbs and start isoc transfer with two pending urbs to avoid 510 gaps in the transfer chain */ 511static int 512start_isoc_chain(usb_fifo * fifo, int num_packets_per_urb, 513 usb_complete_t complete, int packet_size) 514{ 515 int i, k, errcode; 516 517 printk(KERN_INFO "HFC-S USB: starting ISO-chain for Fifo %i\n", 518 fifo->fifonum); 519 520 /* allocate Memory for Iso out Urbs */ 521 for (i = 0; i < 2; i++) { 522 if (!(fifo->iso[i].purb)) { 523 fifo->iso[i].purb = 524 usb_alloc_urb(num_packets_per_urb, GFP_KERNEL); 525 if (!(fifo->iso[i].purb)) { 526 printk(KERN_INFO 527 "alloc urb for fifo %i failed!!!", 528 fifo->fifonum); 529 } 530 fifo->iso[i].owner_fifo = (struct usb_fifo *) fifo; 531 532 /* Init the first iso */ 533 if (ISO_BUFFER_SIZE >= 534 (fifo->usb_packet_maxlen * 535 num_packets_per_urb)) { 536 fill_isoc_urb(fifo->iso[i].purb, 537 fifo->hfc->dev, fifo->pipe, 538 fifo->iso[i].buffer, 539 num_packets_per_urb, 540 fifo->usb_packet_maxlen, 541 fifo->intervall, complete, 542 &fifo->iso[i]); 543 memset(fifo->iso[i].buffer, 0, 544 sizeof(fifo->iso[i].buffer)); 545 /* defining packet delimeters in fifo->buffer */ 546 for (k = 0; k < num_packets_per_urb; k++) { 547 fifo->iso[i].purb-> 548 iso_frame_desc[k].offset = 549 k * packet_size; 550 fifo->iso[i].purb-> 551 iso_frame_desc[k].length = 552 packet_size; 553 } 554 } else { 555 printk(KERN_INFO 556 "HFC-S USB: ISO Buffer size to small!\n"); 557 } 558 } 559 fifo->bit_line = BITLINE_INF; 560 561 errcode = usb_submit_urb(fifo->iso[i].purb, GFP_KERNEL); 562 fifo->active = (errcode >= 0) ? 1 : 0; 563 if (errcode < 0) { 564 printk(KERN_INFO "HFC-S USB: %s URB nr:%d\n", 565 symbolic(urb_errlist, errcode), i); 566 }; 567 } 568 return (fifo->active); 569} 570 571/* stops running iso chain and frees their pending urbs */ 572static void 573stop_isoc_chain(usb_fifo * fifo) 574{ 575 int i; 576 577 for (i = 0; i < 2; i++) { 578 if (fifo->iso[i].purb) { 579#ifdef CONFIG_HISAX_DEBUG 580 DBG(USB_DBG, 581 "HFC-S USB: Stopping iso chain for fifo %i.%i", 582 fifo->fifonum, i); 583#endif 584 usb_unlink_urb(fifo->iso[i].purb); 585 usb_free_urb(fifo->iso[i].purb); 586 fifo->iso[i].purb = NULL; 587 } 588 } 589 if (fifo->urb) { 590 usb_unlink_urb(fifo->urb); 591 usb_free_urb(fifo->urb); 592 fifo->urb = NULL; 593 } 594 fifo->active = 0; 595} 596 597/* defines how much ISO packets are handled in one URB */ 598static int iso_packets[8] = 599 { ISOC_PACKETS_B, ISOC_PACKETS_B, ISOC_PACKETS_B, ISOC_PACKETS_B, 600 ISOC_PACKETS_D, ISOC_PACKETS_D, ISOC_PACKETS_D, ISOC_PACKETS_D 601}; 602 603/*****************************************************/ 604/* transmit completion routine for all ISO tx fifos */ 605/*****************************************************/ 606static void 607tx_iso_complete(struct urb *urb, struct pt_regs *regs) 608{ 609 iso_urb_struct *context_iso_urb = (iso_urb_struct *) urb->context; 610 usb_fifo *fifo = context_iso_urb->owner_fifo; 611 hfcusb_data *hfc = fifo->hfc; 612 int k, tx_offset, num_isoc_packets, sink, len, current_len, 613 errcode; 614 int frame_complete, transp_mode, fifon, status; 615 __u8 threshbit; 616 __u8 threshtable[8] = { 1, 2, 4, 8, 0x10, 0x20, 0x40, 0x80 }; 617 618 fifon = fifo->fifonum; 619 status = urb->status; 620 621 tx_offset = 0; 622 623 if (fifo->active && !status) { 624 transp_mode = 0; 625 if (fifon < 4 && hfc->b_mode[fifon / 2] == L1_MODE_TRANS) 626 transp_mode = TRUE; 627 628 /* is FifoFull-threshold set for our channel? */ 629 threshbit = threshtable[fifon] & hfc->threshold_mask; 630 num_isoc_packets = iso_packets[fifon]; 631 632 /* predict dataflow to avoid fifo overflow */ 633 if (fifon >= HFCUSB_D_TX) { 634 sink = (threshbit) ? SINK_DMIN : SINK_DMAX; 635 } else { 636 sink = (threshbit) ? SINK_MIN : SINK_MAX; 637 } 638 fill_isoc_urb(urb, fifo->hfc->dev, fifo->pipe, 639 context_iso_urb->buffer, num_isoc_packets, 640 fifo->usb_packet_maxlen, fifo->intervall, 641 tx_iso_complete, urb->context); 642 memset(context_iso_urb->buffer, 0, 643 sizeof(context_iso_urb->buffer)); 644 frame_complete = FALSE; 645 /* Generate next Iso Packets */ 646 for (k = 0; k < num_isoc_packets; ++k) { 647 if (fifo->skbuff) { 648 len = fifo->skbuff->len; 649 /* we lower data margin every msec */ 650 fifo->bit_line -= sink; 651 current_len = (0 - fifo->bit_line) / 8; 652 /* maximum 15 byte for every ISO packet makes our life easier */ 653 if (current_len > 14) 654 current_len = 14; 655 current_len = 656 (len <= 657 current_len) ? len : current_len; 658 /* how much bit do we put on the line? */ 659 fifo->bit_line += current_len * 8; 660 661 context_iso_urb->buffer[tx_offset] = 0; 662 if (current_len == len) { 663 if (!transp_mode) { 664 /* here frame completion */ 665 context_iso_urb-> 666 buffer[tx_offset] = 1; 667 /* add 2 byte flags and 16bit CRC at end of ISDN frame */ 668 fifo->bit_line += 32; 669 } 670 frame_complete = TRUE; 671 } 672 673 memcpy(context_iso_urb->buffer + 674 tx_offset + 1, fifo->skbuff->data, 675 current_len); 676 skb_pull(fifo->skbuff, current_len); 677 678 /* define packet delimeters within the URB buffer */ 679 urb->iso_frame_desc[k].offset = tx_offset; 680 urb->iso_frame_desc[k].length = 681 current_len + 1; 682 683 tx_offset += (current_len + 1); 684 } else { 685 urb->iso_frame_desc[k].offset = 686 tx_offset++; 687 688 urb->iso_frame_desc[k].length = 1; 689 fifo->bit_line -= sink; /* we lower data margin every msec */ 690 691 if (fifo->bit_line < BITLINE_INF) { 692 fifo->bit_line = BITLINE_INF; 693 } 694 } 695 696 if (frame_complete) { 697 fifo->delete_flg = TRUE; 698 fifo->hif->l1l2(fifo->hif, 699 PH_DATA | CONFIRM, 700 (void *) fifo->skbuff-> 701 truesize); 702 if (fifo->skbuff && fifo->delete_flg) { 703 dev_kfree_skb_any(fifo->skbuff); 704 fifo->skbuff = NULL; 705 fifo->delete_flg = FALSE; 706 } 707 frame_complete = FALSE; 708 } 709 } 710 errcode = usb_submit_urb(urb, GFP_ATOMIC); 711 if (errcode < 0) { 712 printk(KERN_INFO 713 "HFC-S USB: error submitting ISO URB: %d \n", 714 errcode); 715 } 716 } else { 717 if (status && !hfc->disc_flag) { 718 printk(KERN_INFO 719 "HFC-S USB: tx_iso_complete : urb->status %s (%i), fifonum=%d\n", 720 symbolic(urb_errlist, status), status, 721 fifon); 722 } 723 } 724} /* tx_iso_complete */ 725 726/*****************************************************/ 727/* receive completion routine for all ISO tx fifos */ 728/*****************************************************/ 729static void 730rx_iso_complete(struct urb *urb, struct pt_regs *regs) 731{ 732 iso_urb_struct *context_iso_urb = (iso_urb_struct *) urb->context; 733 usb_fifo *fifo = context_iso_urb->owner_fifo; 734 hfcusb_data *hfc = fifo->hfc; 735 int k, len, errcode, offset, num_isoc_packets, fifon, maxlen, 736 status; 737 unsigned int iso_status; 738 __u8 *buf; 739 static __u8 eof[8]; 740#ifdef CONFIG_HISAX_DEBUG 741 __u8 i; 742#endif 743 744 fifon = fifo->fifonum; 745 status = urb->status; 746 747 if (urb->status == -EOVERFLOW) { 748#ifdef CONFIG_HISAX_DEBUG 749 DBG(USB_DBG, 750 "HFC-USB: ignoring USB DATAOVERRUN for fifo %i \n", 751 fifon); 752#endif 753 status = 0; 754 } 755 if (fifo->active && !status) { 756 num_isoc_packets = iso_packets[fifon]; 757 maxlen = fifo->usb_packet_maxlen; 758 for (k = 0; k < num_isoc_packets; ++k) { 759 len = urb->iso_frame_desc[k].actual_length; 760 offset = urb->iso_frame_desc[k].offset; 761 buf = context_iso_urb->buffer + offset; 762 iso_status = urb->iso_frame_desc[k].status; 763#ifdef CONFIG_HISAX_DEBUG 764 if (iso_status && !hfc->disc_flag) 765 DBG(USB_DBG, 766 "HFC-S USB: ISO packet failure - status:%x", 767 iso_status); 768 769 if ((fifon == 5) && (debug > 1)) { 770 printk(KERN_INFO 771 "HFC-S USB: ISO-D-RX lst_urblen:%2d " 772 "act_urblen:%2d max-urblen:%2d " 773 "EOF:0x%0x DATA: ", 774 fifo->last_urblen, len, maxlen, 775 eof[5]); 776 for (i = 0; i < len; i++) 777 printk("%.2x ", buf[i]); 778 printk("\n"); 779 } 780#endif 781 if (fifo->last_urblen != maxlen) { 782 /* the threshold mask is in the 2nd status byte */ 783 hfc->threshold_mask = buf[1]; 784 /* care for L1 state only for D-Channel 785 to avoid overlapped iso completions */ 786 if (fifon == 5) { 787 /* the S0 state is in the upper half 788 of the 1st status byte */ 789 state_handler(hfc, buf[0] >> 4); 790 } 791 eof[fifon] = buf[0] & 1; 792 if (len > 2) 793 collect_rx_frame(fifo, buf + 2, 794 len - 2, 795 (len < 796 maxlen) ? 797 eof[fifon] : 0); 798 } else { 799 collect_rx_frame(fifo, buf, len, 800 (len < 801 maxlen) ? eof[fifon] : 802 0); 803 } 804 fifo->last_urblen = len; 805 } 806 807 fill_isoc_urb(urb, fifo->hfc->dev, fifo->pipe, 808 context_iso_urb->buffer, num_isoc_packets, 809 fifo->usb_packet_maxlen, fifo->intervall, 810 rx_iso_complete, urb->context); 811 errcode = usb_submit_urb(urb, GFP_ATOMIC); 812 if (errcode < 0) { 813 printk(KERN_INFO 814 "HFC-S USB: error submitting ISO URB: %d \n", 815 errcode); 816 } 817 } else { 818 if (status && !hfc->disc_flag) { 819 printk(KERN_INFO 820 "HFC-S USB: rx_iso_complete : " 821 "urb->status %d, fifonum %d\n", 822 status, fifon); 823 } 824 } 825} /* rx_iso_complete */ 826 827/*****************************************************/ 828/* collect data from interrupt or isochron in */ 829/*****************************************************/ 830static void 831collect_rx_frame(usb_fifo * fifo, __u8 * data, int len, int finish) 832{ 833 hfcusb_data *hfc = fifo->hfc; 834 int transp_mode, fifon; 835#ifdef CONFIG_HISAX_DEBUG 836 int i; 837#endif 838 fifon = fifo->fifonum; 839 transp_mode = 0; 840 if (fifon < 4 && hfc->b_mode[fifon / 2] == L1_MODE_TRANS) 841 transp_mode = TRUE; 842 843 if (!fifo->skbuff) { 844 fifo->skbuff = dev_alloc_skb(fifo->max_size + 3); 845 if (!fifo->skbuff) { 846 printk(KERN_INFO 847 "HFC-S USB: cannot allocate buffer (dev_alloc_skb) fifo:%d\n", 848 fifon); 849 return; 850 } 851 } 852 if (len) { 853 if (fifo->skbuff->len + len < fifo->max_size) { 854 memcpy(skb_put(fifo->skbuff, len), data, len); 855 } else { 856#ifdef CONFIG_HISAX_DEBUG 857 printk(KERN_INFO "HFC-S USB: "); 858 for (i = 0; i < 15; i++) 859 printk("%.2x ", 860 fifo->skbuff->data[fifo->skbuff-> 861 len - 15 + i]); 862 printk("\n"); 863#endif 864 printk(KERN_INFO 865 "HCF-USB: got frame exceeded fifo->max_size:%d on fifo:%d\n", 866 fifo->max_size, fifon); 867 } 868 } 869 if (transp_mode && fifo->skbuff->len >= 128) { 870 fifo->hif->l1l2(fifo->hif, PH_DATA | INDICATION, 871 fifo->skbuff); 872 fifo->skbuff = NULL; 873 return; 874 } 875 /* we have a complete hdlc packet */ 876 if (finish) { 877 if ((!fifo->skbuff->data[fifo->skbuff->len - 1]) 878 && (fifo->skbuff->len > 3)) { 879 /* remove CRC & status */ 880 skb_trim(fifo->skbuff, fifo->skbuff->len - 3); 881 if (fifon == HFCUSB_PCM_RX) { 882 fifo->hif->l1l2(fifo->hif, 883 PH_DATA_E | INDICATION, 884 fifo->skbuff); 885 } else 886 fifo->hif->l1l2(fifo->hif, 887 PH_DATA | INDICATION, 888 fifo->skbuff); 889 fifo->skbuff = NULL; /* buffer was freed from upper layer */ 890 } else { 891 if (fifo->skbuff->len > 3) { 892 printk(KERN_INFO 893 "HFC-S USB: got frame %d bytes but CRC ERROR on fifo:%d!!!\n", 894 fifo->skbuff->len, fifon); 895#ifdef CONFIG_HISAX_DEBUG 896 if (debug > 1) { 897 printk(KERN_INFO "HFC-S USB: "); 898 for (i = 0; i < 15; i++) 899 printk("%.2x ", 900 fifo->skbuff-> 901 data[fifo->skbuff-> 902 len - 15 + i]); 903 printk("\n"); 904 } 905#endif 906 } 907#ifdef CONFIG_HISAX_DEBUG 908 else { 909 printk(KERN_INFO 910 "HFC-S USB: frame to small (%d bytes)!!!\n", 911 fifo->skbuff->len); 912 } 913#endif 914 skb_trim(fifo->skbuff, 0); 915 } 916 } 917} 918 919/***********************************************/ 920/* receive completion routine for all rx fifos */ 921/***********************************************/ 922static void 923rx_complete(struct urb *urb, struct pt_regs *regs) 924{ 925 int len; 926 int status; 927 __u8 *buf, maxlen, fifon; 928 usb_fifo *fifo = (usb_fifo *) urb->context; 929 hfcusb_data *hfc = fifo->hfc; 930 static __u8 eof[8]; 931#ifdef CONFIG_HISAX_DEBUG 932 __u8 i; 933#endif 934 935 urb->dev = hfc->dev; /* security init */ 936 937 fifon = fifo->fifonum; 938 if ((!fifo->active) || (urb->status)) { 939#ifdef CONFIG_HISAX_DEBUG 940 DBG(USB_DBG, "HFC-S USB: RX-Fifo %i is going down (%i)", 941 fifon, urb->status); 942#endif 943 fifo->urb->interval = 0; /* cancel automatic rescheduling */ 944 if (fifo->skbuff) { 945 dev_kfree_skb_any(fifo->skbuff); 946 fifo->skbuff = NULL; 947 } 948 return; 949 } 950 len = urb->actual_length; 951 buf = fifo->buffer; 952 maxlen = fifo->usb_packet_maxlen; 953 954#ifdef CONFIG_HISAX_DEBUG 955 if ((fifon == 5) && (debug > 1)) { 956 printk(KERN_INFO 957 "HFC-S USB: INT-D-RX lst_urblen:%2d act_urblen:%2d max-urblen:%2d EOF:0x%0x DATA: ", 958 fifo->last_urblen, len, maxlen, eof[5]); 959 for (i = 0; i < len; i++) 960 printk("%.2x ", buf[i]); 961 printk("\n"); 962 } 963#endif 964 965 if (fifo->last_urblen != fifo->usb_packet_maxlen) { 966 /* the threshold mask is in the 2nd status byte */ 967 hfc->threshold_mask = buf[1]; 968 /* the S0 state is in the upper half of the 1st status byte */ 969 state_handler(hfc, buf[0] >> 4); 970 eof[fifon] = buf[0] & 1; 971 /* if we have more than the 2 status bytes -> collect data */ 972 if (len > 2) 973 collect_rx_frame(fifo, buf + 2, 974 urb->actual_length - 2, 975 (len < maxlen) ? eof[fifon] : 0); 976 } else { 977 collect_rx_frame(fifo, buf, urb->actual_length, 978 (len < maxlen) ? eof[fifon] : 0); 979 } 980 fifo->last_urblen = urb->actual_length; 981 status = usb_submit_urb(urb, GFP_ATOMIC); 982 if (status) { 983 printk(KERN_INFO 984 "HFC-S USB: error resubmitting URN at rx_complete...\n"); 985 } 986} /* rx_complete */ 987 988/***************************************************/ 989/* start the interrupt transfer for the given fifo */ 990/***************************************************/ 991static void 992start_int_fifo(usb_fifo * fifo) 993{ 994 int errcode; 995 996 printk(KERN_INFO "HFC-S USB: starting intr IN fifo:%d\n", 997 fifo->fifonum); 998 999 if (!fifo->urb) { 1000 fifo->urb = usb_alloc_urb(0, GFP_KERNEL); 1001 if (!fifo->urb) 1002 return; 1003 } 1004 usb_fill_int_urb(fifo->urb, fifo->hfc->dev, fifo->pipe, 1005 fifo->buffer, fifo->usb_packet_maxlen, 1006 rx_complete, fifo, fifo->intervall); 1007 fifo->active = 1; /* must be marked active */ 1008 errcode = usb_submit_urb(fifo->urb, GFP_KERNEL); 1009 if (errcode) { 1010 printk(KERN_INFO 1011 "HFC-S USB: submit URB error(start_int_info): status:%i\n", 1012 errcode); 1013 fifo->active = 0; 1014 fifo->skbuff = NULL; 1015 } 1016} /* start_int_fifo */ 1017 1018/*****************************/ 1019/* set the B-channel mode */ 1020/*****************************/ 1021static void 1022set_hfcmode(hfcusb_data * hfc, int channel, int mode) 1023{ 1024 __u8 val, idx_table[2] = { 0, 2 }; 1025 1026 if (hfc->disc_flag) { 1027 return; 1028 } 1029#ifdef CONFIG_HISAX_DEBUG 1030 DBG(ISDN_DBG, "HFC-S USB: setting channel %d to mode %d", channel, 1031 mode); 1032#endif 1033 hfc->b_mode[channel] = mode; 1034 1035 /* setup CON_HDLC */ 1036 val = 0; 1037 if (mode != L1_MODE_NULL) 1038 val = 8; /* enable fifo? */ 1039 if (mode == L1_MODE_TRANS) 1040 val |= 2; /* set transparent bit */ 1041 1042 /* set FIFO to transmit register */ 1043 queue_control_request(hfc, HFCUSB_FIFO, idx_table[channel], 1); 1044 queue_control_request(hfc, HFCUSB_CON_HDLC, val, 1); 1045 /* reset fifo */ 1046 queue_control_request(hfc, HFCUSB_INC_RES_F, 2, 1); 1047 /* set FIFO to receive register */ 1048 queue_control_request(hfc, HFCUSB_FIFO, idx_table[channel] + 1, 1); 1049 queue_control_request(hfc, HFCUSB_CON_HDLC, val, 1); 1050 /* reset fifo */ 1051 queue_control_request(hfc, HFCUSB_INC_RES_F, 2, 1); 1052 1053 val = 0x40; 1054 if (hfc->b_mode[0]) 1055 val |= 1; 1056 if (hfc->b_mode[1]) 1057 val |= 2; 1058 queue_control_request(hfc, HFCUSB_SCTRL, val, 1); 1059 1060 val = 0; 1061 if (hfc->b_mode[0]) 1062 val |= 1; 1063 if (hfc->b_mode[1]) 1064 val |= 2; 1065 queue_control_request(hfc, HFCUSB_SCTRL_R, val, 1); 1066 1067 if (mode == L1_MODE_NULL) { 1068 if (channel) 1069 handle_led(hfc, LED_B2_OFF); 1070 else 1071 handle_led(hfc, LED_B1_OFF); 1072 } else { 1073 if (channel) 1074 handle_led(hfc, LED_B2_ON); 1075 else 1076 handle_led(hfc, LED_B1_ON); 1077 } 1078} 1079 1080static void 1081hfc_usb_l2l1(struct hisax_if *my_hisax_if, int pr, void *arg) 1082{ 1083 usb_fifo *fifo = my_hisax_if->priv; 1084 hfcusb_data *hfc = fifo->hfc; 1085 1086 switch (pr) { 1087 case PH_ACTIVATE | REQUEST: 1088 if (fifo->fifonum == HFCUSB_D_TX) { 1089#ifdef CONFIG_HISAX_DEBUG 1090 DBG(ISDN_DBG, 1091 "HFC_USB: hfc_usb_d_l2l1 D-chan: PH_ACTIVATE | REQUEST"); 1092#endif 1093 if (hfc->l1_state != 3 1094 && hfc->l1_state != 7) { 1095 hfc->d_if.ifc.l1l2(&hfc->d_if.ifc, 1096 PH_DEACTIVATE | 1097 INDICATION, 1098 NULL); 1099#ifdef CONFIG_HISAX_DEBUG 1100 DBG(ISDN_DBG, 1101 "HFC-S USB: PH_DEACTIVATE | INDICATION sent (not state 3 or 7)"); 1102#endif 1103 } else { 1104 if (hfc->l1_state == 7) { /* l1 already active */ 1105 hfc->d_if.ifc.l1l2(&hfc-> 1106 d_if. 1107 ifc, 1108 PH_ACTIVATE 1109 | 1110 INDICATION, 1111 NULL); 1112#ifdef CONFIG_HISAX_DEBUG 1113 DBG(ISDN_DBG, 1114 "HFC-S USB: PH_ACTIVATE | INDICATION sent again ;)"); 1115#endif 1116 } else { 1117 /* force sending sending INFO1 */ 1118 queue_control_request(hfc, 1119 HFCUSB_STATES, 1120 0x14, 1121 1); 1122 mdelay(1); 1123 /* start l1 activation */ 1124 queue_control_request(hfc, 1125 HFCUSB_STATES, 1126 0x04, 1127 1); 1128 if (!timer_pending 1129 (&hfc->t3_timer)) { 1130 hfc->t3_timer. 1131 expires = 1132 jiffies + 1133 (HFC_TIMER_T3 * 1134 HZ) / 1000; 1135 add_timer(&hfc-> 1136 t3_timer); 1137 } 1138 } 1139 } 1140 } else { 1141#ifdef CONFIG_HISAX_DEBUG 1142 DBG(ISDN_DBG, 1143 "HFC_USB: hfc_usb_d_l2l1 Bx-chan: PH_ACTIVATE | REQUEST"); 1144#endif 1145 set_hfcmode(hfc, 1146 (fifo->fifonum == 1147 HFCUSB_B1_TX) ? 0 : 1, 1148 (int) arg); 1149 fifo->hif->l1l2(fifo->hif, 1150 PH_ACTIVATE | INDICATION, 1151 NULL); 1152 } 1153 break; 1154 case PH_DEACTIVATE | REQUEST: 1155 if (fifo->fifonum == HFCUSB_D_TX) { 1156#ifdef CONFIG_HISAX_DEBUG 1157 DBG(ISDN_DBG, 1158 "HFC_USB: hfc_usb_d_l2l1 D-chan: PH_DEACTIVATE | REQUEST"); 1159#endif 1160 printk(KERN_INFO 1161 "HFC-S USB: ISDN TE device should not deativate...\n"); 1162 } else { 1163#ifdef CONFIG_HISAX_DEBUG 1164 DBG(ISDN_DBG, 1165 "HFC_USB: hfc_usb_d_l2l1 Bx-chan: PH_DEACTIVATE | REQUEST"); 1166#endif 1167 set_hfcmode(hfc, 1168 (fifo->fifonum == 1169 HFCUSB_B1_TX) ? 0 : 1, 1170 (int) L1_MODE_NULL); 1171 fifo->hif->l1l2(fifo->hif, 1172 PH_DEACTIVATE | INDICATION, 1173 NULL); 1174 } 1175 break; 1176 case PH_DATA | REQUEST: 1177 if (fifo->skbuff && fifo->delete_flg) { 1178 dev_kfree_skb_any(fifo->skbuff); 1179 fifo->skbuff = NULL; 1180 fifo->delete_flg = FALSE; 1181 } 1182 fifo->skbuff = arg; /* we have a new buffer */ 1183 break; 1184 default: 1185 printk(KERN_INFO 1186 "HFC_USB: hfc_usb_d_l2l1: unkown state : %#x\n", 1187 pr); 1188 break; 1189 } 1190} 1191 1192/***************************************************************************/ 1193/* usb_init is called once when a new matching device is detected to setup */ 1194/* main parameters. It registers the driver at the main hisax module. */ 1195/* on success 0 is returned. */ 1196/***************************************************************************/ 1197static int 1198usb_init(hfcusb_data * hfc) 1199{ 1200 usb_fifo *fifo; 1201 int i, err; 1202 u_char b; 1203 struct hisax_b_if *p_b_if[2]; 1204 1205 /* check the chip id */ 1206 if (read_usb(hfc, HFCUSB_CHIP_ID, &b) != 1) { 1207 printk(KERN_INFO "HFC-USB: cannot read chip id\n"); 1208 return (1); 1209 } 1210 if (b != HFCUSB_CHIPID) { 1211 printk(KERN_INFO "HFC-S USB: Invalid chip id 0x%02x\n", b); 1212 return (1); 1213 } 1214 1215 /* first set the needed config, interface and alternate */ 1216 err = usb_set_interface(hfc->dev, hfc->if_used, hfc->alt_used); 1217 1218 /* do Chip reset */ 1219 write_usb(hfc, HFCUSB_CIRM, 8); 1220 /* aux = output, reset off */ 1221 write_usb(hfc, HFCUSB_CIRM, 0x10); 1222 1223 /* set USB_SIZE to match the the wMaxPacketSize for INT or BULK transfers */ 1224 write_usb(hfc, HFCUSB_USB_SIZE, 1225 (hfc->packet_size / 8) | ((hfc->packet_size / 8) << 4)); 1226 1227 /* set USB_SIZE_I to match the the wMaxPacketSize for ISO transfers */ 1228 write_usb(hfc, HFCUSB_USB_SIZE_I, hfc->iso_packet_size); 1229 1230 /* enable PCM/GCI master mode */ 1231 write_usb(hfc, HFCUSB_MST_MODE1, 0); /* set default values */ 1232 write_usb(hfc, HFCUSB_MST_MODE0, 1); /* enable master mode */ 1233 1234 /* init the fifos */ 1235 write_usb(hfc, HFCUSB_F_THRES, 1236 (HFCUSB_TX_THRESHOLD / 1237 8) | ((HFCUSB_RX_THRESHOLD / 8) << 4)); 1238 1239 fifo = hfc->fifos; 1240 for (i = 0; i < HFCUSB_NUM_FIFOS; i++) { 1241 write_usb(hfc, HFCUSB_FIFO, i); /* select the desired fifo */ 1242 fifo[i].skbuff = NULL; /* init buffer pointer */ 1243 fifo[i].max_size = 1244 (i <= HFCUSB_B2_RX) ? MAX_BCH_SIZE : MAX_DFRAME_LEN; 1245 fifo[i].last_urblen = 0; 1246 /* set 2 bit for D- & E-channel */ 1247 write_usb(hfc, HFCUSB_HDLC_PAR, 1248 ((i <= HFCUSB_B2_RX) ? 0 : 2)); 1249 /* rx hdlc, enable IFF for D-channel */ 1250 write_usb(hfc, HFCUSB_CON_HDLC, 1251 ((i == HFCUSB_D_TX) ? 0x09 : 0x08)); 1252 write_usb(hfc, HFCUSB_INC_RES_F, 2); /* reset the fifo */ 1253 } 1254 1255 write_usb(hfc, HFCUSB_CLKDEL, 0x0f); /* clock delay value */ 1256 write_usb(hfc, HFCUSB_STATES, 3 | 0x10); /* set deactivated mode */ 1257 write_usb(hfc, HFCUSB_STATES, 3); /* enable state machine */ 1258 1259 write_usb(hfc, HFCUSB_SCTRL_R, 0); /* disable both B receivers */ 1260 write_usb(hfc, HFCUSB_SCTRL, 0x40); /* disable B transmitters + capacitive mode */ 1261 1262 /* set both B-channel to not connected */ 1263 hfc->b_mode[0] = L1_MODE_NULL; 1264 hfc->b_mode[1] = L1_MODE_NULL; 1265 1266 hfc->l1_activated = FALSE; 1267 hfc->disc_flag = FALSE; 1268 hfc->led_state = 0; 1269 hfc->led_new_data = 0; 1270 hfc->old_led_state = 0; 1271 1272 /* init the t3 timer */ 1273 init_timer(&hfc->t3_timer); 1274 hfc->t3_timer.data = (long) hfc; 1275 hfc->t3_timer.function = (void *) l1_timer_expire_t3; 1276 1277 /* init the t4 timer */ 1278 init_timer(&hfc->t4_timer); 1279 hfc->t4_timer.data = (long) hfc; 1280 hfc->t4_timer.function = (void *) l1_timer_expire_t4; 1281 1282 /* init the background machinery for control requests */ 1283 hfc->ctrl_read.bRequestType = 0xc0; 1284 hfc->ctrl_read.bRequest = 1; 1285 hfc->ctrl_read.wLength = 1; 1286 hfc->ctrl_write.bRequestType = 0x40; 1287 hfc->ctrl_write.bRequest = 0; 1288 hfc->ctrl_write.wLength = 0; 1289 usb_fill_control_urb(hfc->ctrl_urb, 1290 hfc->dev, 1291 hfc->ctrl_out_pipe, 1292 (u_char *) & hfc->ctrl_write, 1293 NULL, 0, ctrl_complete, hfc); 1294 /* Init All Fifos */ 1295 for (i = 0; i < HFCUSB_NUM_FIFOS; i++) { 1296 hfc->fifos[i].iso[0].purb = NULL; 1297 hfc->fifos[i].iso[1].purb = NULL; 1298 hfc->fifos[i].active = 0; 1299 } 1300 /* register Modul to upper Hisax Layers */ 1301 hfc->d_if.owner = THIS_MODULE; 1302 hfc->d_if.ifc.priv = &hfc->fifos[HFCUSB_D_TX]; 1303 hfc->d_if.ifc.l2l1 = hfc_usb_l2l1; 1304 for (i = 0; i < 2; i++) { 1305 hfc->b_if[i].ifc.priv = &hfc->fifos[HFCUSB_B1_TX + i * 2]; 1306 hfc->b_if[i].ifc.l2l1 = hfc_usb_l2l1; 1307 p_b_if[i] = &hfc->b_if[i]; 1308 } 1309 /* default Prot: EURO ISDN, should be a module_param */ 1310 hfc->protocol = 2; 1311 hisax_register(&hfc->d_if, p_b_if, "hfc_usb", hfc->protocol); 1312 1313#ifdef CONFIG_HISAX_DEBUG 1314 hfc_debug = debug; 1315#endif 1316 1317 for (i = 0; i < 4; i++) 1318 hfc->fifos[i].hif = &p_b_if[i / 2]->ifc; 1319 for (i = 4; i < 8; i++) 1320 hfc->fifos[i].hif = &hfc->d_if.ifc; 1321 1322 /* 3 (+1) INT IN + 3 ISO OUT */ 1323 if (hfc->cfg_used == CNF_3INT3ISO || hfc->cfg_used == CNF_4INT3ISO) { 1324 start_int_fifo(hfc->fifos + HFCUSB_D_RX); 1325 if (hfc->fifos[HFCUSB_PCM_RX].pipe) 1326 start_int_fifo(hfc->fifos + HFCUSB_PCM_RX); 1327 start_int_fifo(hfc->fifos + HFCUSB_B1_RX); 1328 start_int_fifo(hfc->fifos + HFCUSB_B2_RX); 1329 } 1330 /* 3 (+1) ISO IN + 3 ISO OUT */ 1331 if (hfc->cfg_used == CNF_3ISO3ISO || hfc->cfg_used == CNF_4ISO3ISO) { 1332 start_isoc_chain(hfc->fifos + HFCUSB_D_RX, ISOC_PACKETS_D, 1333 rx_iso_complete, 16); 1334 if (hfc->fifos[HFCUSB_PCM_RX].pipe) 1335 start_isoc_chain(hfc->fifos + HFCUSB_PCM_RX, 1336 ISOC_PACKETS_D, rx_iso_complete, 1337 16); 1338 start_isoc_chain(hfc->fifos + HFCUSB_B1_RX, ISOC_PACKETS_B, 1339 rx_iso_complete, 16); 1340 start_isoc_chain(hfc->fifos + HFCUSB_B2_RX, ISOC_PACKETS_B, 1341 rx_iso_complete, 16); 1342 } 1343 1344 start_isoc_chain(hfc->fifos + HFCUSB_D_TX, ISOC_PACKETS_D, 1345 tx_iso_complete, 1); 1346 start_isoc_chain(hfc->fifos + HFCUSB_B1_TX, ISOC_PACKETS_B, 1347 tx_iso_complete, 1); 1348 start_isoc_chain(hfc->fifos + HFCUSB_B2_TX, ISOC_PACKETS_B, 1349 tx_iso_complete, 1); 1350 1351 handle_led(hfc, LED_POWER_ON); 1352 1353 return (0); 1354} /* usb_init */ 1355 1356/*************************************************/ 1357/* function called to probe a new plugged device */ 1358/*************************************************/ 1359static int 1360hfc_usb_probe(struct usb_interface *intf, const struct usb_device_id *id) 1361{ 1362 struct usb_device *dev = interface_to_usbdev(intf); 1363 hfcusb_data *context; 1364 struct usb_host_interface *iface = intf->cur_altsetting; 1365 struct usb_host_interface *iface_used = NULL; 1366 struct usb_host_endpoint *ep; 1367 int ifnum = iface->desc.bInterfaceNumber; 1368 int i, idx, alt_idx, probe_alt_setting, vend_idx, cfg_used, *vcf, 1369 attr, cfg_found, cidx, ep_addr; 1370 int cmptbl[16], small_match, iso_packet_size, packet_size, 1371 alt_used = 0; 1372 hfcsusb_vdata *driver_info; 1373 1374 vend_idx = 0xffff; 1375 for (i = 0; hfcusb_idtab[i].idVendor; i++) { 1376 if (dev->descriptor.idVendor == hfcusb_idtab[i].idVendor 1377 && dev->descriptor.idProduct == 1378 hfcusb_idtab[i].idProduct) { 1379 vend_idx = i; 1380 continue; 1381 } 1382 } 1383 1384#ifdef CONFIG_HISAX_DEBUG 1385 DBG(USB_DBG, 1386 "HFC-USB: probing interface(%d) actalt(%d) minor(%d)\n", ifnum, 1387 iface->desc.bAlternateSetting, intf->minor); 1388#endif 1389 printk(KERN_INFO 1390 "HFC-S USB: probing interface(%d) actalt(%d) minor(%d)\n", 1391 ifnum, iface->desc.bAlternateSetting, intf->minor); 1392 1393 if (vend_idx != 0xffff) { 1394 /* if vendor and product ID is OK, start probing alternate settings */ 1395 alt_idx = 0; 1396 small_match = 0xffff; 1397 1398 /* default settings */ 1399 iso_packet_size = 16; 1400 packet_size = 64; 1401 1402 while (alt_idx < intf->num_altsetting) { 1403 iface = intf->altsetting + alt_idx; 1404 probe_alt_setting = iface->desc.bAlternateSetting; 1405 cfg_used = 0; 1406 1407 /* check for config EOL element */ 1408 while (validconf[cfg_used][0]) { 1409 cfg_found = TRUE; 1410 vcf = validconf[cfg_used]; 1411 /* first endpoint descriptor */ 1412 ep = iface->endpoint; 1413#ifdef CONFIG_HISAX_DEBUG 1414 DBG(USB_DBG, 1415 "HFC-S USB: (if=%d alt=%d cfg_used=%d)\n", 1416 ifnum, probe_alt_setting, cfg_used); 1417#endif 1418 memcpy(cmptbl, vcf, 16 * sizeof(int)); 1419 1420 /* check for all endpoints in this alternate setting */ 1421 for (i = 0; i < iface->desc.bNumEndpoints; 1422 i++) { 1423 ep_addr = 1424 ep->desc.bEndpointAddress; 1425 /* get endpoint base */ 1426 idx = ((ep_addr & 0x7f) - 1) * 2; 1427 if (ep_addr & 0x80) 1428 idx++; 1429 attr = ep->desc.bmAttributes; 1430 if (cmptbl[idx] == EP_NUL) { 1431 cfg_found = FALSE; 1432 } 1433 if (attr == USB_ENDPOINT_XFER_INT 1434 && cmptbl[idx] == EP_INT) 1435 cmptbl[idx] = EP_NUL; 1436 if (attr == USB_ENDPOINT_XFER_BULK 1437 && cmptbl[idx] == EP_BLK) 1438 cmptbl[idx] = EP_NUL; 1439 if (attr == USB_ENDPOINT_XFER_ISOC 1440 && cmptbl[idx] == EP_ISO) 1441 cmptbl[idx] = EP_NUL; 1442 1443 /* check if all INT endpoints match minimum interval */ 1444 if (attr == USB_ENDPOINT_XFER_INT 1445 && ep->desc.bInterval < 1446 vcf[17]) { 1447#ifdef CONFIG_HISAX_DEBUG 1448 if (cfg_found) 1449 DBG(USB_DBG, 1450 "HFC-S USB: Interrupt Endpoint interval < %d found - skipping config", 1451 vcf[17]); 1452#endif 1453 cfg_found = FALSE; 1454 } 1455 ep++; 1456 } 1457 for (i = 0; i < 16; i++) { 1458 /* all entries must be EP_NOP or EP_NUL for a valid config */ 1459 if (cmptbl[i] != EP_NOP 1460 && cmptbl[i] != EP_NUL) 1461 cfg_found = FALSE; 1462 } 1463 if (cfg_found) { 1464 if (cfg_used < small_match) { 1465 small_match = cfg_used; 1466 alt_used = 1467 probe_alt_setting; 1468 iface_used = iface; 1469 } 1470#ifdef CONFIG_HISAX_DEBUG 1471 DBG(USB_DBG, 1472 "HFC-USB: small_match=%x %x\n", 1473 small_match, alt_used); 1474#endif 1475 } 1476 cfg_used++; 1477 } 1478 alt_idx++; 1479 } /* (alt_idx < intf->num_altsetting) */ 1480 1481 /* found a valid USB Ta Endpint config */ 1482 if (small_match != 0xffff) { 1483 iface = iface_used; 1484 if (! 1485 (context = 1486 kmalloc(sizeof(hfcusb_data), GFP_KERNEL))) 1487 return (-ENOMEM); /* got no mem */ 1488 memset(context, 0, sizeof(hfcusb_data)); 1489 1490 ep = iface->endpoint; 1491 vcf = validconf[small_match]; 1492 1493 for (i = 0; i < iface->desc.bNumEndpoints; i++) { 1494 ep_addr = ep->desc.bEndpointAddress; 1495 /* get endpoint base */ 1496 idx = ((ep_addr & 0x7f) - 1) * 2; 1497 if (ep_addr & 0x80) 1498 idx++; 1499 cidx = idx & 7; 1500 attr = ep->desc.bmAttributes; 1501 1502 /* init Endpoints */ 1503 if (vcf[idx] != EP_NOP 1504 && vcf[idx] != EP_NUL) { 1505 switch (attr) { 1506 case USB_ENDPOINT_XFER_INT: 1507 context-> 1508 fifos[cidx]. 1509 pipe = 1510 usb_rcvintpipe 1511 (dev, 1512 ep->desc. 1513 bEndpointAddress); 1514 context-> 1515 fifos[cidx]. 1516 usb_transfer_mode 1517 = USB_INT; 1518 packet_size = 1519 ep->desc. 1520 wMaxPacketSize; 1521 break; 1522 case USB_ENDPOINT_XFER_BULK: 1523 if (ep_addr & 0x80) 1524 context-> 1525 fifos 1526 [cidx]. 1527 pipe = 1528 usb_rcvbulkpipe 1529 (dev, 1530 ep-> 1531 desc. 1532 bEndpointAddress); 1533 else 1534 context-> 1535 fifos 1536 [cidx]. 1537 pipe = 1538 usb_sndbulkpipe 1539 (dev, 1540 ep-> 1541 desc. 1542 bEndpointAddress); 1543 context-> 1544 fifos[cidx]. 1545 usb_transfer_mode 1546 = USB_BULK; 1547 packet_size = 1548 ep->desc. 1549 wMaxPacketSize; 1550 break; 1551 case USB_ENDPOINT_XFER_ISOC: 1552 if (ep_addr & 0x80) 1553 context-> 1554 fifos 1555 [cidx]. 1556 pipe = 1557 usb_rcvisocpipe 1558 (dev, 1559 ep-> 1560 desc. 1561 bEndpointAddress); 1562 else 1563 context-> 1564 fifos 1565 [cidx]. 1566 pipe = 1567 usb_sndisocpipe 1568 (dev, 1569 ep-> 1570 desc. 1571 bEndpointAddress); 1572 context-> 1573 fifos[cidx]. 1574 usb_transfer_mode 1575 = USB_ISOC; 1576 iso_packet_size = 1577 ep->desc. 1578 wMaxPacketSize; 1579 break; 1580 default: 1581 context-> 1582 fifos[cidx]. 1583 pipe = 0; 1584 } /* switch attribute */ 1585 1586 if (context->fifos[cidx].pipe) { 1587 context->fifos[cidx]. 1588 fifonum = cidx; 1589 context->fifos[cidx].hfc = 1590 context; 1591 context->fifos[cidx]. 1592 usb_packet_maxlen = 1593 ep->desc. 1594 wMaxPacketSize; 1595 context->fifos[cidx]. 1596 intervall = 1597 ep->desc.bInterval; 1598 context->fifos[cidx]. 1599 skbuff = NULL; 1600 } 1601 } 1602 ep++; 1603 } 1604 context->dev = dev; /* save device */ 1605 context->if_used = ifnum; /* save used interface */ 1606 context->alt_used = alt_used; /* and alternate config */ 1607 context->ctrl_paksize = dev->descriptor.bMaxPacketSize0; /* control size */ 1608 context->cfg_used = vcf[16]; /* store used config */ 1609 context->vend_idx = vend_idx; /* store found vendor */ 1610 context->packet_size = packet_size; 1611 context->iso_packet_size = iso_packet_size; 1612 1613 /* create the control pipes needed for register access */ 1614 context->ctrl_in_pipe = 1615 usb_rcvctrlpipe(context->dev, 0); 1616 context->ctrl_out_pipe = 1617 usb_sndctrlpipe(context->dev, 0); 1618 context->ctrl_urb = usb_alloc_urb(0, GFP_KERNEL); 1619 1620 driver_info = 1621 (hfcsusb_vdata *) hfcusb_idtab[vend_idx]. 1622 driver_info; 1623 printk(KERN_INFO "HFC-S USB: detected \"%s\"\n", 1624 driver_info->vend_name); 1625#ifdef CONFIG_HISAX_DEBUG 1626 DBG(USB_DBG, 1627 "HFC-S USB: Endpoint-Config: %s (if=%d alt=%d)\n", 1628 conf_str[small_match], context->if_used, 1629 context->alt_used); 1630 printk(KERN_INFO 1631 "HFC-S USB: E-channel (\"ECHO:\") logging "); 1632 if (validconf[small_match][18]) 1633 printk(" possible\n"); 1634 else 1635 printk("NOT possible\n"); 1636#endif 1637 /* init the chip and register the driver */ 1638 if (usb_init(context)) { 1639 if (context->ctrl_urb) { 1640 usb_unlink_urb(context->ctrl_urb); 1641 usb_free_urb(context->ctrl_urb); 1642 context->ctrl_urb = NULL; 1643 } 1644 kfree(context); 1645 return (-EIO); 1646 } 1647 usb_set_intfdata(intf, context); 1648 return (0); 1649 } 1650 } else { 1651 printk(KERN_INFO 1652 "HFC-S USB: no valid vendor found in USB descriptor\n"); 1653 } 1654 return (-EIO); 1655} 1656 1657/****************************************************/ 1658/* function called when an active device is removed */ 1659/****************************************************/ 1660static void 1661hfc_usb_disconnect(struct usb_interface 1662 *intf) 1663{ 1664 hfcusb_data *context = usb_get_intfdata(intf); 1665 int i; 1666 printk(KERN_INFO "HFC-S USB: device disconnect\n"); 1667 context->disc_flag = TRUE; 1668 usb_set_intfdata(intf, NULL); 1669 if (!context) 1670 return; 1671 if (timer_pending(&context->t3_timer)) 1672 del_timer(&context->t3_timer); 1673 if (timer_pending(&context->t4_timer)) 1674 del_timer(&context->t4_timer); 1675 /* tell all fifos to terminate */ 1676 for (i = 0; i < HFCUSB_NUM_FIFOS; i++) { 1677 if (context->fifos[i].usb_transfer_mode == USB_ISOC) { 1678 if (context->fifos[i].active > 0) { 1679 stop_isoc_chain(&context->fifos[i]); 1680#ifdef CONFIG_HISAX_DEBUG 1681 DBG(USB_DBG, 1682 "HFC-S USB: hfc_usb_disconnect: stopping ISOC chain Fifo no %i", 1683 i); 1684#endif 1685 } 1686 } else { 1687 if (context->fifos[i].active > 0) { 1688 context->fifos[i].active = 0; 1689#ifdef CONFIG_HISAX_DEBUG 1690 DBG(USB_DBG, 1691 "HFC-S USB: hfc_usb_disconnect: unlinking URB for Fifo no %i", 1692 i); 1693#endif 1694 } 1695 if (context->fifos[i].urb) { 1696 usb_unlink_urb(context->fifos[i].urb); 1697 usb_free_urb(context->fifos[i].urb); 1698 context->fifos[i].urb = NULL; 1699 } 1700 } 1701 context->fifos[i].active = 0; 1702 } 1703 /* wait for all URBS to terminate */ 1704 mdelay(10); 1705 if (context->ctrl_urb) { 1706 usb_unlink_urb(context->ctrl_urb); 1707 usb_free_urb(context->ctrl_urb); 1708 context->ctrl_urb = NULL; 1709 } 1710 hisax_unregister(&context->d_if); 1711 kfree(context); /* free our structure again */ 1712} /* hfc_usb_disconnect */ 1713 1714/************************************/ 1715/* our driver information structure */ 1716/************************************/ 1717static struct usb_driver hfc_drv = { 1718 .owner = THIS_MODULE, 1719 .name = "hfc_usb", 1720 .id_table = hfcusb_idtab, 1721 .probe = hfc_usb_probe, 1722 .disconnect = hfc_usb_disconnect, 1723}; 1724static void __exit 1725hfc_usb_exit(void) 1726{ 1727#ifdef CONFIG_HISAX_DEBUG 1728 DBG(USB_DBG, "HFC-S USB: calling \"hfc_usb_exit\" ..."); 1729#endif 1730 usb_deregister(&hfc_drv); /* release our driver */ 1731 printk(KERN_INFO "HFC-S USB: module removed\n"); 1732} 1733 1734static int __init 1735hfc_usb_init(void) 1736{ 1737#ifndef CONFIG_HISAX_DEBUG 1738 unsigned int debug = -1; 1739#endif 1740 char revstr[30], datestr[30], dummy[30]; 1741 sscanf(hfcusb_revision, 1742 "%s %s $ %s %s %s $ ", dummy, revstr, 1743 dummy, datestr, dummy); 1744 printk(KERN_INFO 1745 "HFC-S USB: driver module revision %s date %s loaded, (debug=%i)\n", 1746 revstr, datestr, debug); 1747 if (usb_register(&hfc_drv)) { 1748 printk(KERN_INFO 1749 "HFC-S USB: Unable to register HFC-S USB module at usb stack\n"); 1750 return (-1); /* unable to register */ 1751 } 1752 return (0); 1753} 1754 1755module_init(hfc_usb_init); 1756module_exit(hfc_usb_exit); 1757MODULE_AUTHOR(DRIVER_AUTHOR); 1758MODULE_DESCRIPTION(DRIVER_DESC); 1759MODULE_LICENSE("GPL"); 1760MODULE_DEVICE_TABLE(usb, hfcusb_idtab); 1761