hfc_usb.c revision cd354f1ae75e6466a7e31b727faede57a1f89ca5
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 <linux/smp_lock.h> 41#include "hisax.h" 42#include "hisax_if.h" 43#include "hfc_usb.h" 44 45static const char *hfcusb_revision = 46 "$Revision: 2.3.2.13 $ $Date: 2006/02/17 17:17:22 $ "; 47 48/* Hisax debug support 49* use "modprobe debug=x" where x is bitfield of USB_DBG & ISDN_DBG 50*/ 51#ifdef CONFIG_HISAX_DEBUG 52#include <linux/moduleparam.h> 53#define __debug_variable hfc_debug 54#include "hisax_debug.h" 55static u_int debug; 56module_param(debug, uint, 0); 57static int hfc_debug; 58#endif 59 60/* private vendor specific data */ 61typedef struct { 62 __u8 led_scheme; // led display scheme 63 signed short led_bits[8]; // array of 8 possible LED bitmask settings 64 char *vend_name; // device name 65} hfcsusb_vdata; 66 67/****************************************/ 68/* data defining the devices to be used */ 69/****************************************/ 70static struct usb_device_id hfcusb_idtab[] = { 71 { 72 USB_DEVICE(0x0959, 0x2bd0), 73 .driver_info = (unsigned long) &((hfcsusb_vdata) 74 {LED_OFF, {4, 0, 2, 1}, 75 "ISDN USB TA (Cologne Chip HFC-S USB based)"}), 76 }, 77 { 78 USB_DEVICE(0x0675, 0x1688), 79 .driver_info = (unsigned long) &((hfcsusb_vdata) 80 {LED_SCHEME1, {1, 2, 0, 0}, 81 "DrayTek miniVigor 128 USB ISDN TA"}), 82 }, 83 { 84 USB_DEVICE(0x07b0, 0x0007), 85 .driver_info = (unsigned long) &((hfcsusb_vdata) 86 {LED_SCHEME1, {0x80, -64, -32, -16}, 87 "Billion tiny USB ISDN TA 128"}), 88 }, 89 { 90 USB_DEVICE(0x0742, 0x2008), 91 .driver_info = (unsigned long) &((hfcsusb_vdata) 92 {LED_SCHEME1, {4, 0, 2, 1}, 93 "Stollmann USB TA"}), 94 }, 95 { 96 USB_DEVICE(0x0742, 0x2009), 97 .driver_info = (unsigned long) &((hfcsusb_vdata) 98 {LED_SCHEME1, {4, 0, 2, 1}, 99 "Aceex USB ISDN TA"}), 100 }, 101 { 102 USB_DEVICE(0x0742, 0x200A), 103 .driver_info = (unsigned long) &((hfcsusb_vdata) 104 {LED_SCHEME1, {4, 0, 2, 1}, 105 "OEM USB ISDN TA"}), 106 }, 107 { 108 USB_DEVICE(0x08e3, 0x0301), 109 .driver_info = (unsigned long) &((hfcsusb_vdata) 110 {LED_SCHEME1, {2, 0, 1, 4}, 111 "Olitec USB RNIS"}), 112 }, 113 { 114 USB_DEVICE(0x07fa, 0x0846), 115 .driver_info = (unsigned long) &((hfcsusb_vdata) 116 {LED_SCHEME1, {0x80, -64, -32, -16}, 117 "Bewan Modem RNIS USB"}), 118 }, 119 { 120 USB_DEVICE(0x07fa, 0x0847), 121 .driver_info = (unsigned long) &((hfcsusb_vdata) 122 {LED_SCHEME1, {0x80, -64, -32, -16}, 123 "Djinn Numeris USB"}), 124 }, 125 { 126 USB_DEVICE(0x07b0, 0x0006), 127 .driver_info = (unsigned long) &((hfcsusb_vdata) 128 {LED_SCHEME1, {0x80, -64, -32, -16}, 129 "Twister ISDN TA"}), 130 }, 131 { } 132}; 133 134/***************************************************************/ 135/* structure defining input+output fifos (interrupt/bulk mode) */ 136/***************************************************************/ 137struct usb_fifo; /* forward definition */ 138typedef struct iso_urb_struct { 139 struct urb *purb; 140 __u8 buffer[ISO_BUFFER_SIZE]; /* buffer incoming/outgoing data */ 141 struct usb_fifo *owner_fifo; /* pointer to owner fifo */ 142} iso_urb_struct; 143 144 145struct hfcusb_data; /* forward definition */ 146typedef struct usb_fifo { 147 int fifonum; /* fifo index attached to this structure */ 148 int active; /* fifo is currently active */ 149 struct hfcusb_data *hfc; /* pointer to main structure */ 150 int pipe; /* address of endpoint */ 151 __u8 usb_packet_maxlen; /* maximum length for usb transfer */ 152 unsigned int max_size; /* maximum size of receive/send packet */ 153 __u8 intervall; /* interrupt interval */ 154 struct sk_buff *skbuff; /* actual used buffer */ 155 struct urb *urb; /* transfer structure for usb routines */ 156 __u8 buffer[128]; /* buffer incoming/outgoing data */ 157 int bit_line; /* how much bits are in the fifo? */ 158 159 volatile __u8 usb_transfer_mode; /* switched between ISO and INT */ 160 iso_urb_struct iso[2]; /* need two urbs to have one always for pending */ 161 struct hisax_if *hif; /* hisax interface */ 162 int delete_flg; /* only delete skbuff once */ 163 int last_urblen; /* remember length of last packet */ 164 165} usb_fifo; 166 167/*********************************************/ 168/* structure holding all data for one device */ 169/*********************************************/ 170typedef struct hfcusb_data { 171 /* HiSax Interface for loadable Layer1 drivers */ 172 struct hisax_d_if d_if; /* see hisax_if.h */ 173 struct hisax_b_if b_if[2]; /* see hisax_if.h */ 174 int protocol; 175 176 struct usb_device *dev; /* our device */ 177 int if_used; /* used interface number */ 178 int alt_used; /* used alternate config */ 179 int ctrl_paksize; /* control pipe packet size */ 180 int ctrl_in_pipe, ctrl_out_pipe; /* handles for control pipe */ 181 int cfg_used; /* configuration index used */ 182 int vend_idx; /* vendor found */ 183 int b_mode[2]; /* B-channel mode */ 184 int l1_activated; /* layer 1 activated */ 185 int disc_flag; /* 'true' if device was disonnected to avoid some USB actions */ 186 int packet_size, iso_packet_size; 187 188 /* control pipe background handling */ 189 ctrl_buft ctrl_buff[HFC_CTRL_BUFSIZE]; /* buffer holding queued data */ 190 volatile int ctrl_in_idx, ctrl_out_idx, ctrl_cnt; /* input/output pointer + count */ 191 struct urb *ctrl_urb; /* transfer structure for control channel */ 192 193 struct usb_ctrlrequest ctrl_write; /* buffer for control write request */ 194 struct usb_ctrlrequest ctrl_read; /* same for read request */ 195 196 __u8 old_led_state, led_state, led_new_data, led_b_active; 197 198 volatile __u8 threshold_mask; /* threshold actually reported */ 199 volatile __u8 bch_enables; /* or mask for sctrl_r and sctrl register values */ 200 201 usb_fifo fifos[HFCUSB_NUM_FIFOS]; /* structure holding all fifo data */ 202 203 volatile __u8 l1_state; /* actual l1 state */ 204 struct timer_list t3_timer; /* timer 3 for activation/deactivation */ 205 struct timer_list t4_timer; /* timer 4 for activation/deactivation */ 206} hfcusb_data; 207 208 209static void collect_rx_frame(usb_fifo * fifo, __u8 * data, int len, 210 int finish); 211 212 213static inline const char * 214symbolic(struct hfcusb_symbolic_list list[], const int num) 215{ 216 int i; 217 for (i = 0; list[i].name != NULL; i++) 218 if (list[i].num == num) 219 return (list[i].name); 220 return "<unknown ERROR>"; 221} 222 223 224/******************************************************/ 225/* start next background transfer for control channel */ 226/******************************************************/ 227static void 228ctrl_start_transfer(hfcusb_data * hfc) 229{ 230 if (hfc->ctrl_cnt) { 231 hfc->ctrl_urb->pipe = hfc->ctrl_out_pipe; 232 hfc->ctrl_urb->setup_packet = (u_char *) & hfc->ctrl_write; 233 hfc->ctrl_urb->transfer_buffer = NULL; 234 hfc->ctrl_urb->transfer_buffer_length = 0; 235 hfc->ctrl_write.wIndex = 236 cpu_to_le16(hfc->ctrl_buff[hfc->ctrl_out_idx].hfc_reg); 237 hfc->ctrl_write.wValue = 238 cpu_to_le16(hfc->ctrl_buff[hfc->ctrl_out_idx].reg_val); 239 240 usb_submit_urb(hfc->ctrl_urb, GFP_ATOMIC); /* start transfer */ 241 } 242} /* ctrl_start_transfer */ 243 244/************************************/ 245/* queue a control transfer request */ 246/* return 0 on success. */ 247/************************************/ 248static int 249queue_control_request(hfcusb_data * hfc, __u8 reg, __u8 val, int action) 250{ 251 ctrl_buft *buf; 252 253 if (hfc->ctrl_cnt >= HFC_CTRL_BUFSIZE) 254 return (1); /* no space left */ 255 buf = &hfc->ctrl_buff[hfc->ctrl_in_idx]; /* pointer to new index */ 256 buf->hfc_reg = reg; 257 buf->reg_val = val; 258 buf->action = action; 259 if (++hfc->ctrl_in_idx >= HFC_CTRL_BUFSIZE) 260 hfc->ctrl_in_idx = 0; /* pointer wrap */ 261 if (++hfc->ctrl_cnt == 1) 262 ctrl_start_transfer(hfc); 263 return (0); 264} /* queue_control_request */ 265 266static int 267control_action_handler(hfcusb_data * hfc, int reg, int val, int action) 268{ 269 if (!action) 270 return (1); /* no action defined */ 271 return (0); 272} 273 274/***************************************************************/ 275/* control completion routine handling background control cmds */ 276/***************************************************************/ 277static void 278ctrl_complete(struct urb *urb) 279{ 280 hfcusb_data *hfc = (hfcusb_data *) urb->context; 281 ctrl_buft *buf; 282 283 urb->dev = hfc->dev; 284 if (hfc->ctrl_cnt) { 285 buf = &hfc->ctrl_buff[hfc->ctrl_out_idx]; 286 control_action_handler(hfc, buf->hfc_reg, buf->reg_val, 287 buf->action); 288 289 hfc->ctrl_cnt--; /* decrement actual count */ 290 if (++hfc->ctrl_out_idx >= HFC_CTRL_BUFSIZE) 291 hfc->ctrl_out_idx = 0; /* pointer wrap */ 292 293 ctrl_start_transfer(hfc); /* start next transfer */ 294 } 295} /* ctrl_complete */ 296 297/***************************************************/ 298/* write led data to auxport & invert if necessary */ 299/***************************************************/ 300static void 301write_led(hfcusb_data * hfc, __u8 led_state) 302{ 303 if (led_state != hfc->old_led_state) { 304 hfc->old_led_state = led_state; 305 queue_control_request(hfc, HFCUSB_P_DATA, led_state, 1); 306 } 307} 308 309/**************************/ 310/* handle LED bits */ 311/**************************/ 312static void 313set_led_bit(hfcusb_data * hfc, signed short led_bits, int unset) 314{ 315 if (unset) { 316 if (led_bits < 0) 317 hfc->led_state |= abs(led_bits); 318 else 319 hfc->led_state &= ~led_bits; 320 } else { 321 if (led_bits < 0) 322 hfc->led_state &= ~abs(led_bits); 323 else 324 hfc->led_state |= led_bits; 325 } 326} 327 328/**************************/ 329/* handle LED requests */ 330/**************************/ 331static void 332handle_led(hfcusb_data * hfc, int event) 333{ 334 hfcsusb_vdata *driver_info = 335 (hfcsusb_vdata *) hfcusb_idtab[hfc->vend_idx].driver_info; 336 337 /* if no scheme -> no LED action */ 338 if (driver_info->led_scheme == LED_OFF) 339 return; 340 341 switch (event) { 342 case LED_POWER_ON: 343 set_led_bit(hfc, driver_info->led_bits[0], 344 0); 345 set_led_bit(hfc, driver_info->led_bits[1], 346 1); 347 set_led_bit(hfc, driver_info->led_bits[2], 348 1); 349 set_led_bit(hfc, driver_info->led_bits[3], 350 1); 351 break; 352 case LED_POWER_OFF: /* no Power off handling */ 353 break; 354 case LED_S0_ON: 355 set_led_bit(hfc, driver_info->led_bits[1], 356 0); 357 break; 358 case LED_S0_OFF: 359 set_led_bit(hfc, driver_info->led_bits[1], 360 1); 361 break; 362 case LED_B1_ON: 363 set_led_bit(hfc, driver_info->led_bits[2], 364 0); 365 break; 366 case LED_B1_OFF: 367 set_led_bit(hfc, driver_info->led_bits[2], 368 1); 369 break; 370 case LED_B2_ON: 371 set_led_bit(hfc, driver_info->led_bits[3], 372 0); 373 break; 374 case LED_B2_OFF: 375 set_led_bit(hfc, driver_info->led_bits[3], 376 1); 377 break; 378 } 379 write_led(hfc, hfc->led_state); 380} 381 382/********************************/ 383/* called when timer t3 expires */ 384/********************************/ 385static void 386l1_timer_expire_t3(hfcusb_data * hfc) 387{ 388 hfc->d_if.ifc.l1l2(&hfc->d_if.ifc, PH_DEACTIVATE | INDICATION, 389 NULL); 390#ifdef CONFIG_HISAX_DEBUG 391 DBG(ISDN_DBG, 392 "HFC-S USB: PH_DEACTIVATE | INDICATION sent (T3 expire)"); 393#endif 394 hfc->l1_activated = false; 395 handle_led(hfc, LED_S0_OFF); 396 /* deactivate : */ 397 queue_control_request(hfc, HFCUSB_STATES, 0x10, 1); 398 queue_control_request(hfc, HFCUSB_STATES, 3, 1); 399} 400 401/********************************/ 402/* called when timer t4 expires */ 403/********************************/ 404static void 405l1_timer_expire_t4(hfcusb_data * hfc) 406{ 407 hfc->d_if.ifc.l1l2(&hfc->d_if.ifc, PH_DEACTIVATE | INDICATION, 408 NULL); 409#ifdef CONFIG_HISAX_DEBUG 410 DBG(ISDN_DBG, 411 "HFC-S USB: PH_DEACTIVATE | INDICATION sent (T4 expire)"); 412#endif 413 hfc->l1_activated = false; 414 handle_led(hfc, LED_S0_OFF); 415} 416 417/*****************************/ 418/* handle S0 state changes */ 419/*****************************/ 420static void 421state_handler(hfcusb_data * hfc, __u8 state) 422{ 423 __u8 old_state; 424 425 old_state = hfc->l1_state; 426 if (state == old_state || state < 1 || state > 8) 427 return; 428 429#ifdef CONFIG_HISAX_DEBUG 430 DBG(ISDN_DBG, "HFC-S USB: new S0 state:%d old_state:%d", state, 431 old_state); 432#endif 433 if (state < 4 || state == 7 || state == 8) { 434 if (timer_pending(&hfc->t3_timer)) 435 del_timer(&hfc->t3_timer); 436#ifdef CONFIG_HISAX_DEBUG 437 DBG(ISDN_DBG, "HFC-S USB: T3 deactivated"); 438#endif 439 } 440 if (state >= 7) { 441 if (timer_pending(&hfc->t4_timer)) 442 del_timer(&hfc->t4_timer); 443#ifdef CONFIG_HISAX_DEBUG 444 DBG(ISDN_DBG, "HFC-S USB: T4 deactivated"); 445#endif 446 } 447 448 if (state == 7 && !hfc->l1_activated) { 449 hfc->d_if.ifc.l1l2(&hfc->d_if.ifc, 450 PH_ACTIVATE | INDICATION, NULL); 451#ifdef CONFIG_HISAX_DEBUG 452 DBG(ISDN_DBG, "HFC-S USB: PH_ACTIVATE | INDICATION sent"); 453#endif 454 hfc->l1_activated = true; 455 handle_led(hfc, LED_S0_ON); 456 } else if (state <= 3 /* && activated */ ) { 457 if (old_state == 7 || old_state == 8) { 458#ifdef CONFIG_HISAX_DEBUG 459 DBG(ISDN_DBG, "HFC-S USB: T4 activated"); 460#endif 461 if (!timer_pending(&hfc->t4_timer)) { 462 hfc->t4_timer.expires = 463 jiffies + (HFC_TIMER_T4 * HZ) / 1000; 464 add_timer(&hfc->t4_timer); 465 } 466 } else { 467 hfc->d_if.ifc.l1l2(&hfc->d_if.ifc, 468 PH_DEACTIVATE | INDICATION, 469 NULL); 470#ifdef CONFIG_HISAX_DEBUG 471 DBG(ISDN_DBG, 472 "HFC-S USB: PH_DEACTIVATE | INDICATION sent"); 473#endif 474 hfc->l1_activated = false; 475 handle_led(hfc, LED_S0_OFF); 476 } 477 } 478 hfc->l1_state = state; 479} 480 481/* prepare iso urb */ 482static void 483fill_isoc_urb(struct urb *urb, struct usb_device *dev, unsigned int pipe, 484 void *buf, int num_packets, int packet_size, int interval, 485 usb_complete_t complete, void *context) 486{ 487 int k; 488 489 spin_lock_init(&urb->lock); 490 urb->dev = dev; 491 urb->pipe = pipe; 492 urb->complete = complete; 493 urb->number_of_packets = num_packets; 494 urb->transfer_buffer_length = packet_size * num_packets; 495 urb->context = context; 496 urb->transfer_buffer = buf; 497 urb->transfer_flags = URB_ISO_ASAP; 498 urb->actual_length = 0; 499 urb->interval = interval; 500 for (k = 0; k < num_packets; k++) { 501 urb->iso_frame_desc[k].offset = packet_size * k; 502 urb->iso_frame_desc[k].length = packet_size; 503 urb->iso_frame_desc[k].actual_length = 0; 504 } 505} 506 507/* allocs urbs and start isoc transfer with two pending urbs to avoid 508 gaps in the transfer chain */ 509static int 510start_isoc_chain(usb_fifo * fifo, int num_packets_per_urb, 511 usb_complete_t complete, int packet_size) 512{ 513 int i, k, errcode; 514 515 printk(KERN_INFO "HFC-S USB: starting ISO-chain for Fifo %i\n", 516 fifo->fifonum); 517 518 /* allocate Memory for Iso out Urbs */ 519 for (i = 0; i < 2; i++) { 520 if (!(fifo->iso[i].purb)) { 521 fifo->iso[i].purb = 522 usb_alloc_urb(num_packets_per_urb, GFP_KERNEL); 523 if (!(fifo->iso[i].purb)) { 524 printk(KERN_INFO 525 "alloc urb for fifo %i failed!!!", 526 fifo->fifonum); 527 } 528 fifo->iso[i].owner_fifo = (struct usb_fifo *) fifo; 529 530 /* Init the first iso */ 531 if (ISO_BUFFER_SIZE >= 532 (fifo->usb_packet_maxlen * 533 num_packets_per_urb)) { 534 fill_isoc_urb(fifo->iso[i].purb, 535 fifo->hfc->dev, fifo->pipe, 536 fifo->iso[i].buffer, 537 num_packets_per_urb, 538 fifo->usb_packet_maxlen, 539 fifo->intervall, complete, 540 &fifo->iso[i]); 541 memset(fifo->iso[i].buffer, 0, 542 sizeof(fifo->iso[i].buffer)); 543 /* defining packet delimeters in fifo->buffer */ 544 for (k = 0; k < num_packets_per_urb; k++) { 545 fifo->iso[i].purb-> 546 iso_frame_desc[k].offset = 547 k * packet_size; 548 fifo->iso[i].purb-> 549 iso_frame_desc[k].length = 550 packet_size; 551 } 552 } else { 553 printk(KERN_INFO 554 "HFC-S USB: ISO Buffer size to small!\n"); 555 } 556 } 557 fifo->bit_line = BITLINE_INF; 558 559 errcode = usb_submit_urb(fifo->iso[i].purb, GFP_KERNEL); 560 fifo->active = (errcode >= 0) ? 1 : 0; 561 if (errcode < 0) { 562 printk(KERN_INFO "HFC-S USB: %s URB nr:%d\n", 563 symbolic(urb_errlist, errcode), i); 564 }; 565 } 566 return (fifo->active); 567} 568 569/* stops running iso chain and frees their pending urbs */ 570static void 571stop_isoc_chain(usb_fifo * fifo) 572{ 573 int i; 574 575 for (i = 0; i < 2; i++) { 576 if (fifo->iso[i].purb) { 577#ifdef CONFIG_HISAX_DEBUG 578 DBG(USB_DBG, 579 "HFC-S USB: Stopping iso chain for fifo %i.%i", 580 fifo->fifonum, i); 581#endif 582 usb_unlink_urb(fifo->iso[i].purb); 583 usb_free_urb(fifo->iso[i].purb); 584 fifo->iso[i].purb = NULL; 585 } 586 } 587 if (fifo->urb) { 588 usb_unlink_urb(fifo->urb); 589 usb_free_urb(fifo->urb); 590 fifo->urb = NULL; 591 } 592 fifo->active = 0; 593} 594 595/* defines how much ISO packets are handled in one URB */ 596static int iso_packets[8] = 597 { ISOC_PACKETS_B, ISOC_PACKETS_B, ISOC_PACKETS_B, ISOC_PACKETS_B, 598 ISOC_PACKETS_D, ISOC_PACKETS_D, ISOC_PACKETS_D, ISOC_PACKETS_D 599}; 600 601/*****************************************************/ 602/* transmit completion routine for all ISO tx fifos */ 603/*****************************************************/ 604static void 605tx_iso_complete(struct urb *urb) 606{ 607 iso_urb_struct *context_iso_urb = (iso_urb_struct *) urb->context; 608 usb_fifo *fifo = context_iso_urb->owner_fifo; 609 hfcusb_data *hfc = fifo->hfc; 610 int k, tx_offset, num_isoc_packets, sink, len, current_len, 611 errcode; 612 int frame_complete, transp_mode, fifon, status; 613 __u8 threshbit; 614 __u8 threshtable[8] = { 1, 2, 4, 8, 0x10, 0x20, 0x40, 0x80 }; 615 616 fifon = fifo->fifonum; 617 status = urb->status; 618 619 tx_offset = 0; 620 621 if (fifo->active && !status) { 622 transp_mode = 0; 623 if (fifon < 4 && hfc->b_mode[fifon / 2] == L1_MODE_TRANS) 624 transp_mode = true; 625 626 /* is FifoFull-threshold set for our channel? */ 627 threshbit = threshtable[fifon] & hfc->threshold_mask; 628 num_isoc_packets = iso_packets[fifon]; 629 630 /* predict dataflow to avoid fifo overflow */ 631 if (fifon >= HFCUSB_D_TX) { 632 sink = (threshbit) ? SINK_DMIN : SINK_DMAX; 633 } else { 634 sink = (threshbit) ? SINK_MIN : SINK_MAX; 635 } 636 fill_isoc_urb(urb, fifo->hfc->dev, fifo->pipe, 637 context_iso_urb->buffer, num_isoc_packets, 638 fifo->usb_packet_maxlen, fifo->intervall, 639 tx_iso_complete, urb->context); 640 memset(context_iso_urb->buffer, 0, 641 sizeof(context_iso_urb->buffer)); 642 frame_complete = false; 643 /* Generate next Iso Packets */ 644 for (k = 0; k < num_isoc_packets; ++k) { 645 if (fifo->skbuff) { 646 len = fifo->skbuff->len; 647 /* we lower data margin every msec */ 648 fifo->bit_line -= sink; 649 current_len = (0 - fifo->bit_line) / 8; 650 /* maximum 15 byte for every ISO packet makes our life easier */ 651 if (current_len > 14) 652 current_len = 14; 653 current_len = 654 (len <= 655 current_len) ? len : current_len; 656 /* how much bit do we put on the line? */ 657 fifo->bit_line += current_len * 8; 658 659 context_iso_urb->buffer[tx_offset] = 0; 660 if (current_len == len) { 661 if (!transp_mode) { 662 /* here frame completion */ 663 context_iso_urb-> 664 buffer[tx_offset] = 1; 665 /* add 2 byte flags and 16bit CRC at end of ISDN frame */ 666 fifo->bit_line += 32; 667 } 668 frame_complete = true; 669 } 670 671 memcpy(context_iso_urb->buffer + 672 tx_offset + 1, fifo->skbuff->data, 673 current_len); 674 skb_pull(fifo->skbuff, current_len); 675 676 /* define packet delimeters within the URB buffer */ 677 urb->iso_frame_desc[k].offset = tx_offset; 678 urb->iso_frame_desc[k].length = 679 current_len + 1; 680 681 tx_offset += (current_len + 1); 682 } else { 683 urb->iso_frame_desc[k].offset = 684 tx_offset++; 685 686 urb->iso_frame_desc[k].length = 1; 687 fifo->bit_line -= sink; /* we lower data margin every msec */ 688 689 if (fifo->bit_line < BITLINE_INF) { 690 fifo->bit_line = BITLINE_INF; 691 } 692 } 693 694 if (frame_complete) { 695 fifo->delete_flg = true; 696 fifo->hif->l1l2(fifo->hif, 697 PH_DATA | CONFIRM, 698 (void *) (unsigned long) fifo->skbuff-> 699 truesize); 700 if (fifo->skbuff && fifo->delete_flg) { 701 dev_kfree_skb_any(fifo->skbuff); 702 fifo->skbuff = NULL; 703 fifo->delete_flg = false; 704 } 705 frame_complete = false; 706 } 707 } 708 errcode = usb_submit_urb(urb, GFP_ATOMIC); 709 if (errcode < 0) { 710 printk(KERN_INFO 711 "HFC-S USB: error submitting ISO URB: %d \n", 712 errcode); 713 } 714 } else { 715 if (status && !hfc->disc_flag) { 716 printk(KERN_INFO 717 "HFC-S USB: tx_iso_complete : urb->status %s (%i), fifonum=%d\n", 718 symbolic(urb_errlist, status), status, 719 fifon); 720 } 721 } 722} /* tx_iso_complete */ 723 724/*****************************************************/ 725/* receive completion routine for all ISO tx fifos */ 726/*****************************************************/ 727static void 728rx_iso_complete(struct urb *urb) 729{ 730 iso_urb_struct *context_iso_urb = (iso_urb_struct *) urb->context; 731 usb_fifo *fifo = context_iso_urb->owner_fifo; 732 hfcusb_data *hfc = fifo->hfc; 733 int k, len, errcode, offset, num_isoc_packets, fifon, maxlen, 734 status; 735 unsigned int iso_status; 736 __u8 *buf; 737 static __u8 eof[8]; 738#ifdef CONFIG_HISAX_DEBUG 739 __u8 i; 740#endif 741 742 fifon = fifo->fifonum; 743 status = urb->status; 744 745 if (urb->status == -EOVERFLOW) { 746#ifdef CONFIG_HISAX_DEBUG 747 DBG(USB_DBG, 748 "HFC-USB: ignoring USB DATAOVERRUN for fifo %i \n", 749 fifon); 750#endif 751 status = 0; 752 } 753 if (fifo->active && !status) { 754 num_isoc_packets = iso_packets[fifon]; 755 maxlen = fifo->usb_packet_maxlen; 756 for (k = 0; k < num_isoc_packets; ++k) { 757 len = urb->iso_frame_desc[k].actual_length; 758 offset = urb->iso_frame_desc[k].offset; 759 buf = context_iso_urb->buffer + offset; 760 iso_status = urb->iso_frame_desc[k].status; 761#ifdef CONFIG_HISAX_DEBUG 762 if (iso_status && !hfc->disc_flag) 763 DBG(USB_DBG, 764 "HFC-S USB: ISO packet failure - status:%x", 765 iso_status); 766 767 if ((fifon == 5) && (debug > 1)) { 768 printk(KERN_INFO 769 "HFC-S USB: ISO-D-RX lst_urblen:%2d " 770 "act_urblen:%2d max-urblen:%2d " 771 "EOF:0x%0x DATA: ", 772 fifo->last_urblen, len, maxlen, 773 eof[5]); 774 for (i = 0; i < len; i++) 775 printk("%.2x ", buf[i]); 776 printk("\n"); 777 } 778#endif 779 if (fifo->last_urblen != maxlen) { 780 /* the threshold mask is in the 2nd status byte */ 781 hfc->threshold_mask = buf[1]; 782 /* care for L1 state only for D-Channel 783 to avoid overlapped iso completions */ 784 if (fifon == 5) { 785 /* the S0 state is in the upper half 786 of the 1st status byte */ 787 state_handler(hfc, buf[0] >> 4); 788 } 789 eof[fifon] = buf[0] & 1; 790 if (len > 2) 791 collect_rx_frame(fifo, buf + 2, 792 len - 2, 793 (len < 794 maxlen) ? 795 eof[fifon] : 0); 796 } else { 797 collect_rx_frame(fifo, buf, len, 798 (len < 799 maxlen) ? eof[fifon] : 800 0); 801 } 802 fifo->last_urblen = len; 803 } 804 805 fill_isoc_urb(urb, fifo->hfc->dev, fifo->pipe, 806 context_iso_urb->buffer, num_isoc_packets, 807 fifo->usb_packet_maxlen, fifo->intervall, 808 rx_iso_complete, urb->context); 809 errcode = usb_submit_urb(urb, GFP_ATOMIC); 810 if (errcode < 0) { 811 printk(KERN_INFO 812 "HFC-S USB: error submitting ISO URB: %d \n", 813 errcode); 814 } 815 } else { 816 if (status && !hfc->disc_flag) { 817 printk(KERN_INFO 818 "HFC-S USB: rx_iso_complete : " 819 "urb->status %d, fifonum %d\n", 820 status, fifon); 821 } 822 } 823} /* rx_iso_complete */ 824 825/*****************************************************/ 826/* collect data from interrupt or isochron in */ 827/*****************************************************/ 828static void 829collect_rx_frame(usb_fifo * fifo, __u8 * data, int len, int finish) 830{ 831 hfcusb_data *hfc = fifo->hfc; 832 int transp_mode, fifon; 833#ifdef CONFIG_HISAX_DEBUG 834 int i; 835#endif 836 fifon = fifo->fifonum; 837 transp_mode = 0; 838 if (fifon < 4 && hfc->b_mode[fifon / 2] == L1_MODE_TRANS) 839 transp_mode = true; 840 841 if (!fifo->skbuff) { 842 fifo->skbuff = dev_alloc_skb(fifo->max_size + 3); 843 if (!fifo->skbuff) { 844 printk(KERN_INFO 845 "HFC-S USB: cannot allocate buffer (dev_alloc_skb) fifo:%d\n", 846 fifon); 847 return; 848 } 849 } 850 if (len) { 851 if (fifo->skbuff->len + len < fifo->max_size) { 852 memcpy(skb_put(fifo->skbuff, len), data, len); 853 } else { 854#ifdef CONFIG_HISAX_DEBUG 855 printk(KERN_INFO "HFC-S USB: "); 856 for (i = 0; i < 15; i++) 857 printk("%.2x ", 858 fifo->skbuff->data[fifo->skbuff-> 859 len - 15 + i]); 860 printk("\n"); 861#endif 862 printk(KERN_INFO 863 "HCF-USB: got frame exceeded fifo->max_size:%d on fifo:%d\n", 864 fifo->max_size, fifon); 865 } 866 } 867 if (transp_mode && fifo->skbuff->len >= 128) { 868 fifo->hif->l1l2(fifo->hif, PH_DATA | INDICATION, 869 fifo->skbuff); 870 fifo->skbuff = NULL; 871 return; 872 } 873 /* we have a complete hdlc packet */ 874 if (finish) { 875 if ((!fifo->skbuff->data[fifo->skbuff->len - 1]) 876 && (fifo->skbuff->len > 3)) { 877 /* remove CRC & status */ 878 skb_trim(fifo->skbuff, fifo->skbuff->len - 3); 879 if (fifon == HFCUSB_PCM_RX) { 880 fifo->hif->l1l2(fifo->hif, 881 PH_DATA_E | INDICATION, 882 fifo->skbuff); 883 } else 884 fifo->hif->l1l2(fifo->hif, 885 PH_DATA | INDICATION, 886 fifo->skbuff); 887 fifo->skbuff = NULL; /* buffer was freed from upper layer */ 888 } else { 889 if (fifo->skbuff->len > 3) { 890 printk(KERN_INFO 891 "HFC-S USB: got frame %d bytes but CRC ERROR on fifo:%d!!!\n", 892 fifo->skbuff->len, fifon); 893#ifdef CONFIG_HISAX_DEBUG 894 if (debug > 1) { 895 printk(KERN_INFO "HFC-S USB: "); 896 for (i = 0; i < 15; i++) 897 printk("%.2x ", 898 fifo->skbuff-> 899 data[fifo->skbuff-> 900 len - 15 + i]); 901 printk("\n"); 902 } 903#endif 904 } 905#ifdef CONFIG_HISAX_DEBUG 906 else { 907 printk(KERN_INFO 908 "HFC-S USB: frame to small (%d bytes)!!!\n", 909 fifo->skbuff->len); 910 } 911#endif 912 skb_trim(fifo->skbuff, 0); 913 } 914 } 915} 916 917/***********************************************/ 918/* receive completion routine for all rx fifos */ 919/***********************************************/ 920static void 921rx_complete(struct urb *urb) 922{ 923 int len; 924 int status; 925 __u8 *buf, maxlen, fifon; 926 usb_fifo *fifo = (usb_fifo *) urb->context; 927 hfcusb_data *hfc = fifo->hfc; 928 static __u8 eof[8]; 929#ifdef CONFIG_HISAX_DEBUG 930 __u8 i; 931#endif 932 933 urb->dev = hfc->dev; /* security init */ 934 935 fifon = fifo->fifonum; 936 if ((!fifo->active) || (urb->status)) { 937#ifdef CONFIG_HISAX_DEBUG 938 DBG(USB_DBG, "HFC-S USB: RX-Fifo %i is going down (%i)", 939 fifon, urb->status); 940#endif 941 fifo->urb->interval = 0; /* cancel automatic rescheduling */ 942 if (fifo->skbuff) { 943 dev_kfree_skb_any(fifo->skbuff); 944 fifo->skbuff = NULL; 945 } 946 return; 947 } 948 len = urb->actual_length; 949 buf = fifo->buffer; 950 maxlen = fifo->usb_packet_maxlen; 951 952#ifdef CONFIG_HISAX_DEBUG 953 if ((fifon == 5) && (debug > 1)) { 954 printk(KERN_INFO 955 "HFC-S USB: INT-D-RX lst_urblen:%2d act_urblen:%2d max-urblen:%2d EOF:0x%0x DATA: ", 956 fifo->last_urblen, len, maxlen, eof[5]); 957 for (i = 0; i < len; i++) 958 printk("%.2x ", buf[i]); 959 printk("\n"); 960 } 961#endif 962 963 if (fifo->last_urblen != fifo->usb_packet_maxlen) { 964 /* the threshold mask is in the 2nd status byte */ 965 hfc->threshold_mask = buf[1]; 966 /* the S0 state is in the upper half of the 1st status byte */ 967 state_handler(hfc, buf[0] >> 4); 968 eof[fifon] = buf[0] & 1; 969 /* if we have more than the 2 status bytes -> collect data */ 970 if (len > 2) 971 collect_rx_frame(fifo, buf + 2, 972 urb->actual_length - 2, 973 (len < maxlen) ? eof[fifon] : 0); 974 } else { 975 collect_rx_frame(fifo, buf, urb->actual_length, 976 (len < maxlen) ? eof[fifon] : 0); 977 } 978 fifo->last_urblen = urb->actual_length; 979 status = usb_submit_urb(urb, GFP_ATOMIC); 980 if (status) { 981 printk(KERN_INFO 982 "HFC-S USB: error resubmitting URN at rx_complete...\n"); 983 } 984} /* rx_complete */ 985 986/***************************************************/ 987/* start the interrupt transfer for the given fifo */ 988/***************************************************/ 989static void 990start_int_fifo(usb_fifo * fifo) 991{ 992 int errcode; 993 994 printk(KERN_INFO "HFC-S USB: starting intr IN fifo:%d\n", 995 fifo->fifonum); 996 997 if (!fifo->urb) { 998 fifo->urb = usb_alloc_urb(0, GFP_KERNEL); 999 if (!fifo->urb) 1000 return; 1001 } 1002 usb_fill_int_urb(fifo->urb, fifo->hfc->dev, fifo->pipe, 1003 fifo->buffer, fifo->usb_packet_maxlen, 1004 rx_complete, fifo, fifo->intervall); 1005 fifo->active = 1; /* must be marked active */ 1006 errcode = usb_submit_urb(fifo->urb, GFP_KERNEL); 1007 if (errcode) { 1008 printk(KERN_INFO 1009 "HFC-S USB: submit URB error(start_int_info): status:%i\n", 1010 errcode); 1011 fifo->active = 0; 1012 fifo->skbuff = NULL; 1013 } 1014} /* start_int_fifo */ 1015 1016/*****************************/ 1017/* set the B-channel mode */ 1018/*****************************/ 1019static void 1020set_hfcmode(hfcusb_data * hfc, int channel, int mode) 1021{ 1022 __u8 val, idx_table[2] = { 0, 2 }; 1023 1024 if (hfc->disc_flag) { 1025 return; 1026 } 1027#ifdef CONFIG_HISAX_DEBUG 1028 DBG(ISDN_DBG, "HFC-S USB: setting channel %d to mode %d", channel, 1029 mode); 1030#endif 1031 hfc->b_mode[channel] = mode; 1032 1033 /* setup CON_HDLC */ 1034 val = 0; 1035 if (mode != L1_MODE_NULL) 1036 val = 8; /* enable fifo? */ 1037 if (mode == L1_MODE_TRANS) 1038 val |= 2; /* set transparent bit */ 1039 1040 /* set FIFO to transmit register */ 1041 queue_control_request(hfc, HFCUSB_FIFO, idx_table[channel], 1); 1042 queue_control_request(hfc, HFCUSB_CON_HDLC, val, 1); 1043 /* reset fifo */ 1044 queue_control_request(hfc, HFCUSB_INC_RES_F, 2, 1); 1045 /* set FIFO to receive register */ 1046 queue_control_request(hfc, HFCUSB_FIFO, idx_table[channel] + 1, 1); 1047 queue_control_request(hfc, HFCUSB_CON_HDLC, val, 1); 1048 /* reset fifo */ 1049 queue_control_request(hfc, HFCUSB_INC_RES_F, 2, 1); 1050 1051 val = 0x40; 1052 if (hfc->b_mode[0]) 1053 val |= 1; 1054 if (hfc->b_mode[1]) 1055 val |= 2; 1056 queue_control_request(hfc, HFCUSB_SCTRL, val, 1); 1057 1058 val = 0; 1059 if (hfc->b_mode[0]) 1060 val |= 1; 1061 if (hfc->b_mode[1]) 1062 val |= 2; 1063 queue_control_request(hfc, HFCUSB_SCTRL_R, val, 1); 1064 1065 if (mode == L1_MODE_NULL) { 1066 if (channel) 1067 handle_led(hfc, LED_B2_OFF); 1068 else 1069 handle_led(hfc, LED_B1_OFF); 1070 } else { 1071 if (channel) 1072 handle_led(hfc, LED_B2_ON); 1073 else 1074 handle_led(hfc, LED_B1_ON); 1075 } 1076} 1077 1078static void 1079hfc_usb_l2l1(struct hisax_if *my_hisax_if, int pr, void *arg) 1080{ 1081 usb_fifo *fifo = my_hisax_if->priv; 1082 hfcusb_data *hfc = fifo->hfc; 1083 1084 switch (pr) { 1085 case PH_ACTIVATE | REQUEST: 1086 if (fifo->fifonum == HFCUSB_D_TX) { 1087#ifdef CONFIG_HISAX_DEBUG 1088 DBG(ISDN_DBG, 1089 "HFC_USB: hfc_usb_d_l2l1 D-chan: PH_ACTIVATE | REQUEST"); 1090#endif 1091 if (hfc->l1_state != 3 1092 && hfc->l1_state != 7) { 1093 hfc->d_if.ifc.l1l2(&hfc->d_if.ifc, 1094 PH_DEACTIVATE | 1095 INDICATION, 1096 NULL); 1097#ifdef CONFIG_HISAX_DEBUG 1098 DBG(ISDN_DBG, 1099 "HFC-S USB: PH_DEACTIVATE | INDICATION sent (not state 3 or 7)"); 1100#endif 1101 } else { 1102 if (hfc->l1_state == 7) { /* l1 already active */ 1103 hfc->d_if.ifc.l1l2(&hfc-> 1104 d_if. 1105 ifc, 1106 PH_ACTIVATE 1107 | 1108 INDICATION, 1109 NULL); 1110#ifdef CONFIG_HISAX_DEBUG 1111 DBG(ISDN_DBG, 1112 "HFC-S USB: PH_ACTIVATE | INDICATION sent again ;)"); 1113#endif 1114 } else { 1115 /* force sending sending INFO1 */ 1116 queue_control_request(hfc, 1117 HFCUSB_STATES, 1118 0x14, 1119 1); 1120 mdelay(1); 1121 /* start l1 activation */ 1122 queue_control_request(hfc, 1123 HFCUSB_STATES, 1124 0x04, 1125 1); 1126 if (!timer_pending 1127 (&hfc->t3_timer)) { 1128 hfc->t3_timer. 1129 expires = 1130 jiffies + 1131 (HFC_TIMER_T3 * 1132 HZ) / 1000; 1133 add_timer(&hfc-> 1134 t3_timer); 1135 } 1136 } 1137 } 1138 } else { 1139#ifdef CONFIG_HISAX_DEBUG 1140 DBG(ISDN_DBG, 1141 "HFC_USB: hfc_usb_d_l2l1 Bx-chan: PH_ACTIVATE | REQUEST"); 1142#endif 1143 set_hfcmode(hfc, 1144 (fifo->fifonum == 1145 HFCUSB_B1_TX) ? 0 : 1, 1146 (long) arg); 1147 fifo->hif->l1l2(fifo->hif, 1148 PH_ACTIVATE | INDICATION, 1149 NULL); 1150 } 1151 break; 1152 case PH_DEACTIVATE | REQUEST: 1153 if (fifo->fifonum == HFCUSB_D_TX) { 1154#ifdef CONFIG_HISAX_DEBUG 1155 DBG(ISDN_DBG, 1156 "HFC_USB: hfc_usb_d_l2l1 D-chan: PH_DEACTIVATE | REQUEST"); 1157#endif 1158 printk(KERN_INFO 1159 "HFC-S USB: ISDN TE device should not deativate...\n"); 1160 } else { 1161#ifdef CONFIG_HISAX_DEBUG 1162 DBG(ISDN_DBG, 1163 "HFC_USB: hfc_usb_d_l2l1 Bx-chan: PH_DEACTIVATE | REQUEST"); 1164#endif 1165 set_hfcmode(hfc, 1166 (fifo->fifonum == 1167 HFCUSB_B1_TX) ? 0 : 1, 1168 (int) L1_MODE_NULL); 1169 fifo->hif->l1l2(fifo->hif, 1170 PH_DEACTIVATE | INDICATION, 1171 NULL); 1172 } 1173 break; 1174 case PH_DATA | REQUEST: 1175 if (fifo->skbuff && fifo->delete_flg) { 1176 dev_kfree_skb_any(fifo->skbuff); 1177 fifo->skbuff = NULL; 1178 fifo->delete_flg = false; 1179 } 1180 fifo->skbuff = arg; /* we have a new buffer */ 1181 break; 1182 default: 1183 printk(KERN_INFO 1184 "HFC_USB: hfc_usb_d_l2l1: unkown state : %#x\n", 1185 pr); 1186 break; 1187 } 1188} 1189 1190/***************************************************************************/ 1191/* usb_init is called once when a new matching device is detected to setup */ 1192/* main parameters. It registers the driver at the main hisax module. */ 1193/* on success 0 is returned. */ 1194/***************************************************************************/ 1195static int 1196usb_init(hfcusb_data * hfc) 1197{ 1198 usb_fifo *fifo; 1199 int i, err; 1200 u_char b; 1201 struct hisax_b_if *p_b_if[2]; 1202 1203 /* check the chip id */ 1204 if (read_usb(hfc, HFCUSB_CHIP_ID, &b) != 1) { 1205 printk(KERN_INFO "HFC-USB: cannot read chip id\n"); 1206 return (1); 1207 } 1208 if (b != HFCUSB_CHIPID) { 1209 printk(KERN_INFO "HFC-S USB: Invalid chip id 0x%02x\n", b); 1210 return (1); 1211 } 1212 1213 /* first set the needed config, interface and alternate */ 1214 err = usb_set_interface(hfc->dev, hfc->if_used, hfc->alt_used); 1215 1216 /* do Chip reset */ 1217 write_usb(hfc, HFCUSB_CIRM, 8); 1218 /* aux = output, reset off */ 1219 write_usb(hfc, HFCUSB_CIRM, 0x10); 1220 1221 /* set USB_SIZE to match the the wMaxPacketSize for INT or BULK transfers */ 1222 write_usb(hfc, HFCUSB_USB_SIZE, 1223 (hfc->packet_size / 8) | ((hfc->packet_size / 8) << 4)); 1224 1225 /* set USB_SIZE_I to match the the wMaxPacketSize for ISO transfers */ 1226 write_usb(hfc, HFCUSB_USB_SIZE_I, hfc->iso_packet_size); 1227 1228 /* enable PCM/GCI master mode */ 1229 write_usb(hfc, HFCUSB_MST_MODE1, 0); /* set default values */ 1230 write_usb(hfc, HFCUSB_MST_MODE0, 1); /* enable master mode */ 1231 1232 /* init the fifos */ 1233 write_usb(hfc, HFCUSB_F_THRES, 1234 (HFCUSB_TX_THRESHOLD / 1235 8) | ((HFCUSB_RX_THRESHOLD / 8) << 4)); 1236 1237 fifo = hfc->fifos; 1238 for (i = 0; i < HFCUSB_NUM_FIFOS; i++) { 1239 write_usb(hfc, HFCUSB_FIFO, i); /* select the desired fifo */ 1240 fifo[i].skbuff = NULL; /* init buffer pointer */ 1241 fifo[i].max_size = 1242 (i <= HFCUSB_B2_RX) ? MAX_BCH_SIZE : MAX_DFRAME_LEN; 1243 fifo[i].last_urblen = 0; 1244 /* set 2 bit for D- & E-channel */ 1245 write_usb(hfc, HFCUSB_HDLC_PAR, 1246 ((i <= HFCUSB_B2_RX) ? 0 : 2)); 1247 /* rx hdlc, enable IFF for D-channel */ 1248 write_usb(hfc, HFCUSB_CON_HDLC, 1249 ((i == HFCUSB_D_TX) ? 0x09 : 0x08)); 1250 write_usb(hfc, HFCUSB_INC_RES_F, 2); /* reset the fifo */ 1251 } 1252 1253 write_usb(hfc, HFCUSB_CLKDEL, 0x0f); /* clock delay value */ 1254 write_usb(hfc, HFCUSB_STATES, 3 | 0x10); /* set deactivated mode */ 1255 write_usb(hfc, HFCUSB_STATES, 3); /* enable state machine */ 1256 1257 write_usb(hfc, HFCUSB_SCTRL_R, 0); /* disable both B receivers */ 1258 write_usb(hfc, HFCUSB_SCTRL, 0x40); /* disable B transmitters + capacitive mode */ 1259 1260 /* set both B-channel to not connected */ 1261 hfc->b_mode[0] = L1_MODE_NULL; 1262 hfc->b_mode[1] = L1_MODE_NULL; 1263 1264 hfc->l1_activated = false; 1265 hfc->disc_flag = false; 1266 hfc->led_state = 0; 1267 hfc->led_new_data = 0; 1268 hfc->old_led_state = 0; 1269 1270 /* init the t3 timer */ 1271 init_timer(&hfc->t3_timer); 1272 hfc->t3_timer.data = (long) hfc; 1273 hfc->t3_timer.function = (void *) l1_timer_expire_t3; 1274 1275 /* init the t4 timer */ 1276 init_timer(&hfc->t4_timer); 1277 hfc->t4_timer.data = (long) hfc; 1278 hfc->t4_timer.function = (void *) l1_timer_expire_t4; 1279 1280 /* init the background machinery for control requests */ 1281 hfc->ctrl_read.bRequestType = 0xc0; 1282 hfc->ctrl_read.bRequest = 1; 1283 hfc->ctrl_read.wLength = cpu_to_le16(1); 1284 hfc->ctrl_write.bRequestType = 0x40; 1285 hfc->ctrl_write.bRequest = 0; 1286 hfc->ctrl_write.wLength = 0; 1287 usb_fill_control_urb(hfc->ctrl_urb, 1288 hfc->dev, 1289 hfc->ctrl_out_pipe, 1290 (u_char *) & hfc->ctrl_write, 1291 NULL, 0, ctrl_complete, hfc); 1292 /* Init All Fifos */ 1293 for (i = 0; i < HFCUSB_NUM_FIFOS; i++) { 1294 hfc->fifos[i].iso[0].purb = NULL; 1295 hfc->fifos[i].iso[1].purb = NULL; 1296 hfc->fifos[i].active = 0; 1297 } 1298 /* register Modul to upper Hisax Layers */ 1299 hfc->d_if.owner = THIS_MODULE; 1300 hfc->d_if.ifc.priv = &hfc->fifos[HFCUSB_D_TX]; 1301 hfc->d_if.ifc.l2l1 = hfc_usb_l2l1; 1302 for (i = 0; i < 2; i++) { 1303 hfc->b_if[i].ifc.priv = &hfc->fifos[HFCUSB_B1_TX + i * 2]; 1304 hfc->b_if[i].ifc.l2l1 = hfc_usb_l2l1; 1305 p_b_if[i] = &hfc->b_if[i]; 1306 } 1307 /* default Prot: EURO ISDN, should be a module_param */ 1308 hfc->protocol = 2; 1309 hisax_register(&hfc->d_if, p_b_if, "hfc_usb", hfc->protocol); 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 if (context->ctrl_urb) { 1631 usb_unlink_urb(context->ctrl_urb); 1632 usb_free_urb(context->ctrl_urb); 1633 context->ctrl_urb = NULL; 1634 } 1635 kfree(context); 1636 return (-EIO); 1637 } 1638 usb_set_intfdata(intf, context); 1639 return (0); 1640 } 1641 } else { 1642 printk(KERN_INFO 1643 "HFC-S USB: no valid vendor found in USB descriptor\n"); 1644 } 1645 return (-EIO); 1646} 1647 1648/****************************************************/ 1649/* function called when an active device is removed */ 1650/****************************************************/ 1651static void 1652hfc_usb_disconnect(struct usb_interface 1653 *intf) 1654{ 1655 hfcusb_data *context = usb_get_intfdata(intf); 1656 int i; 1657 printk(KERN_INFO "HFC-S USB: device disconnect\n"); 1658 context->disc_flag = true; 1659 usb_set_intfdata(intf, NULL); 1660 if (!context) 1661 return; 1662 if (timer_pending(&context->t3_timer)) 1663 del_timer(&context->t3_timer); 1664 if (timer_pending(&context->t4_timer)) 1665 del_timer(&context->t4_timer); 1666 /* tell all fifos to terminate */ 1667 for (i = 0; i < HFCUSB_NUM_FIFOS; i++) { 1668 if (context->fifos[i].usb_transfer_mode == USB_ISOC) { 1669 if (context->fifos[i].active > 0) { 1670 stop_isoc_chain(&context->fifos[i]); 1671#ifdef CONFIG_HISAX_DEBUG 1672 DBG(USB_DBG, 1673 "HFC-S USB: hfc_usb_disconnect: stopping ISOC chain Fifo no %i", 1674 i); 1675#endif 1676 } 1677 } else { 1678 if (context->fifos[i].active > 0) { 1679 context->fifos[i].active = 0; 1680#ifdef CONFIG_HISAX_DEBUG 1681 DBG(USB_DBG, 1682 "HFC-S USB: hfc_usb_disconnect: unlinking URB for Fifo no %i", 1683 i); 1684#endif 1685 } 1686 if (context->fifos[i].urb) { 1687 usb_unlink_urb(context->fifos[i].urb); 1688 usb_free_urb(context->fifos[i].urb); 1689 context->fifos[i].urb = NULL; 1690 } 1691 } 1692 context->fifos[i].active = 0; 1693 } 1694 /* wait for all URBS to terminate */ 1695 mdelay(10); 1696 if (context->ctrl_urb) { 1697 usb_unlink_urb(context->ctrl_urb); 1698 usb_free_urb(context->ctrl_urb); 1699 context->ctrl_urb = NULL; 1700 } 1701 hisax_unregister(&context->d_if); 1702 kfree(context); /* free our structure again */ 1703} /* hfc_usb_disconnect */ 1704 1705/************************************/ 1706/* our driver information structure */ 1707/************************************/ 1708static struct usb_driver hfc_drv = { 1709 .name = "hfc_usb", 1710 .id_table = hfcusb_idtab, 1711 .probe = hfc_usb_probe, 1712 .disconnect = hfc_usb_disconnect, 1713}; 1714static void __exit 1715hfc_usb_exit(void) 1716{ 1717#ifdef CONFIG_HISAX_DEBUG 1718 DBG(USB_DBG, "HFC-S USB: calling \"hfc_usb_exit\" ..."); 1719#endif 1720 usb_deregister(&hfc_drv); /* release our driver */ 1721 printk(KERN_INFO "HFC-S USB: module removed\n"); 1722} 1723 1724static int __init 1725hfc_usb_init(void) 1726{ 1727#ifndef CONFIG_HISAX_DEBUG 1728 unsigned int debug = -1; 1729#endif 1730 char revstr[30], datestr[30], dummy[30]; 1731 sscanf(hfcusb_revision, 1732 "%s %s $ %s %s %s $ ", dummy, revstr, 1733 dummy, datestr, dummy); 1734 printk(KERN_INFO 1735 "HFC-S USB: driver module revision %s date %s loaded, (debug=%i)\n", 1736 revstr, datestr, debug); 1737 if (usb_register(&hfc_drv)) { 1738 printk(KERN_INFO 1739 "HFC-S USB: Unable to register HFC-S USB module at usb stack\n"); 1740 return (-1); /* unable to register */ 1741 } 1742 return (0); 1743} 1744 1745module_init(hfc_usb_init); 1746module_exit(hfc_usb_exit); 1747MODULE_AUTHOR(DRIVER_AUTHOR); 1748MODULE_DESCRIPTION(DRIVER_DESC); 1749MODULE_LICENSE("GPL"); 1750MODULE_DEVICE_TABLE(usb, hfcusb_idtab); 1751