hfc_usb.c revision 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2
1/* 2 * hfc_usb.c 3 * 4 * $Id: hfc_usb.c,v 4.34 2005/01/26 17:25:53 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 47/* 48* Version Information 49* (do not modify the CVS Makros $Revision: 4.34 $ and $Date: 2005/01/26 17:25:53 $ !) 50*/ 51static const char *hfcusb_revision = 52 "Revision: 4.34 $ Date: 2005/01/26 17:25:53 $ "; 53 54/* Hisax debug support 55* use "modprobe debug=x" where x is bitfield of USB_DBG & ISDN_DBG 56*/ 57#ifdef CONFIG_HISAX_DEBUG 58#include <linux/moduleparam.h> 59#define __debug_variable hfc_debug 60#include "hisax_debug.h" 61static u_int debug; 62module_param(debug, uint, 0); 63int hfc_debug; 64#endif 65 66 67/****************************************/ 68/* data defining the devices to be used */ 69/****************************************/ 70static struct usb_device_id hfc_usb_idtab[] = { 71 {USB_DEVICE(0x0959, 0x2bd0)}, /* Colognechip USB eval TA */ 72 {USB_DEVICE(0x0675, 0x1688)}, /* DrayTek miniVigor 128 USB ISDN TA */ 73 {USB_DEVICE(0x07b0, 0x0007)}, /* Billion USB TA 2 */ 74 {USB_DEVICE(0x0742, 0x2008)}, /* Stollmann USB TA */ 75 {USB_DEVICE(0x0742, 0x2009)}, /* Aceex USB ISDN TA */ 76 {USB_DEVICE(0x0742, 0x200A)}, /* OEM USB ISDN TA */ 77 {USB_DEVICE(0x08e3, 0x0301)}, /* OliTec ISDN USB */ 78 {USB_DEVICE(0x07fa, 0x0846)}, /* Bewan ISDN USB TA */ 79 {USB_DEVICE(0x07fa, 0x0847)}, /* Djinn Numeris USB */ 80 {USB_DEVICE(0x07b0, 0x0006)}, /* Twister ISDN USB TA */ 81 {} /* end with an all-zeroes entry */ 82}; 83 84/* driver internal device specific data: 85* VendorID, ProductID, Devicename, LED_SCHEME, 86* LED's BitMask in HFCUSB_P_DATA Register : LED_USB, LED_S0, LED_B1, LED_B2 87*/ 88vendor_data vdata[] = { 89 /* CologneChip Eval TA */ 90 {0x0959, 0x2bd0, "ISDN USB TA (Cologne Chip HFC-S USB based)", 91 LED_OFF, {4, 0, 2, 1} 92 } 93 , 94 /* DrayTek miniVigor 128 USB ISDN TA */ 95 {0x0675, 0x1688, "DrayTek miniVigor 128 USB ISDN TA", 96 LED_SCHEME1, {1, 2, 0, 0} 97 } 98 , 99 /* Billion TA */ 100 {0x07b0, 0x0007, "Billion tiny USB ISDN TA 128", 101 LED_SCHEME1, {0x80, -64, -32, -16} 102 } 103 , 104 /* Stollmann TA */ 105 {0x0742, 0x2008, "Stollmann USB TA", 106 LED_SCHEME1, {4, 0, 2, 1} 107 } 108 , 109 /* Aceex USB ISDN TA */ 110 {0x0742, 0x2009, "Aceex USB ISDN TA", 111 LED_SCHEME1, {4, 0, 2, 1} 112 } 113 , 114 /* OEM USB ISDN TA */ 115 {0x0742, 0x200A, "OEM USB ISDN TA", 116 LED_SCHEME1, {4, 0, 2, 1} 117 } 118 , 119 /* Olitec TA */ 120 {0x08e3, 0x0301, "Olitec USB RNIS", 121 LED_SCHEME1, {2, 0, 1, 4} 122 } 123 , 124 /* Bewan TA */ 125 {0x07fa, 0x0846, "Bewan Modem RNIS USB", 126 LED_SCHEME1, {0x80, -64, -32, -16} 127 } 128 , 129 /* Bewan TA */ 130 {0x07fa, 0x0847, "Djinn Numeris USB", 131 LED_SCHEME1, {0x80, -64, -32, -16} 132 } 133 , 134 /* Twister ISDN TA */ 135 {0x07b0, 0x0006, "Twister ISDN TA", 136 LED_SCHEME1, {0x80, -64, -32, -16} 137 } 138 , 139 {0, 0, 0} /* EOL element */ 140}; 141 142/***************************************************************/ 143/* structure defining input+output fifos (interrupt/bulk mode) */ 144/***************************************************************/ 145struct usb_fifo; /* forward definition */ 146typedef struct iso_urb_struct { 147 struct urb *purb; 148 __u8 buffer[ISO_BUFFER_SIZE]; /* buffer incoming/outgoing data */ 149 struct usb_fifo *owner_fifo; /* pointer to owner fifo */ 150} iso_urb_struct; 151 152 153struct hfcusb_data; /* forward definition */ 154typedef struct usb_fifo { 155 int fifonum; /* fifo index attached to this structure */ 156 int active; /* fifo is currently active */ 157 struct hfcusb_data *hfc; /* pointer to main structure */ 158 int pipe; /* address of endpoint */ 159 __u8 usb_packet_maxlen; /* maximum length for usb transfer */ 160 unsigned int max_size; /* maximum size of receive/send packet */ 161 __u8 intervall; /* interrupt interval */ 162 struct sk_buff *skbuff; /* actual used buffer */ 163 struct urb *urb; /* transfer structure for usb routines */ 164 __u8 buffer[128]; /* buffer incoming/outgoing data */ 165 int bit_line; /* how much bits are in the fifo? */ 166 167 volatile __u8 usb_transfer_mode; /* switched between ISO and INT */ 168 iso_urb_struct iso[2]; /* need two urbs to have one always for pending */ 169 struct hisax_if *hif; /* hisax interface */ 170 int delete_flg; /* only delete skbuff once */ 171 int last_urblen; /* remember length of last packet */ 172 173} usb_fifo; 174 175/*********************************************/ 176/* structure holding all data for one device */ 177/*********************************************/ 178typedef struct hfcusb_data { 179 /* HiSax Interface for loadable Layer1 drivers */ 180 struct hisax_d_if d_if; /* see hisax_if.h */ 181 struct hisax_b_if b_if[2]; /* see hisax_if.h */ 182 int protocol; 183 184 struct usb_device *dev; /* our device */ 185 int if_used; /* used interface number */ 186 int alt_used; /* used alternate config */ 187 int ctrl_paksize; /* control pipe packet size */ 188 int ctrl_in_pipe, ctrl_out_pipe; /* handles for control pipe */ 189 int cfg_used; /* configuration index used */ 190 int vend_idx; /* vendor found */ 191 int b_mode[2]; /* B-channel mode */ 192 int l1_activated; /* layer 1 activated */ 193 int disc_flag; /* TRUE if device was disonnected to avoid some USB actions */ 194 int packet_size, iso_packet_size; 195 196 /* control pipe background handling */ 197 ctrl_buft ctrl_buff[HFC_CTRL_BUFSIZE]; /* buffer holding queued data */ 198 volatile int ctrl_in_idx, ctrl_out_idx, ctrl_cnt; /* input/output pointer + count */ 199 struct urb *ctrl_urb; /* transfer structure for control channel */ 200 201 struct usb_ctrlrequest ctrl_write; /* buffer for control write request */ 202 struct usb_ctrlrequest ctrl_read; /* same for read request */ 203 204 __u8 old_led_state, led_state, led_new_data, led_b_active; 205 206 volatile __u8 threshold_mask; /* threshold actually reported */ 207 volatile __u8 bch_enables; /* or mask for sctrl_r and sctrl register values */ 208 209 usb_fifo fifos[HFCUSB_NUM_FIFOS]; /* structure holding all fifo data */ 210 211 volatile __u8 l1_state; /* actual l1 state */ 212 struct timer_list t3_timer; /* timer 3 for activation/deactivation */ 213 struct timer_list t4_timer; /* timer 4 for activation/deactivation */ 214 struct timer_list led_timer; /* timer flashing leds */ 215 216} hfcusb_data; 217 218 219static void collect_rx_frame(usb_fifo * fifo, __u8 * data, int len, 220 int finish); 221 222 223static inline const char * 224symbolic(struct hfcusb_symbolic_list list[], const int num) 225{ 226 int i; 227 for (i = 0; list[i].name != NULL; i++) 228 if (list[i].num == num) 229 return (list[i].name); 230 return "<unkown>"; 231} 232 233 234/******************************************************/ 235/* start next background transfer for control channel */ 236/******************************************************/ 237static void 238ctrl_start_transfer(hfcusb_data * hfc) 239{ 240 if (hfc->ctrl_cnt) { 241 hfc->ctrl_urb->pipe = hfc->ctrl_out_pipe; 242 hfc->ctrl_urb->setup_packet = (u_char *) & hfc->ctrl_write; 243 hfc->ctrl_urb->transfer_buffer = NULL; 244 hfc->ctrl_urb->transfer_buffer_length = 0; 245 hfc->ctrl_write.wIndex = 246 hfc->ctrl_buff[hfc->ctrl_out_idx].hfc_reg; 247 hfc->ctrl_write.wValue = 248 hfc->ctrl_buff[hfc->ctrl_out_idx].reg_val; 249 250 usb_submit_urb(hfc->ctrl_urb, GFP_ATOMIC); /* start transfer */ 251 } 252} /* ctrl_start_transfer */ 253 254/************************************/ 255/* queue a control transfer request */ 256/* return 0 on success. */ 257/************************************/ 258static int 259queue_control_request(hfcusb_data * hfc, __u8 reg, __u8 val, int action) 260{ 261 ctrl_buft *buf; 262 263 if (hfc->ctrl_cnt >= HFC_CTRL_BUFSIZE) 264 return (1); /* no space left */ 265 buf = &hfc->ctrl_buff[hfc->ctrl_in_idx]; /* pointer to new index */ 266 buf->hfc_reg = reg; 267 buf->reg_val = val; 268 buf->action = action; 269 if (++hfc->ctrl_in_idx >= HFC_CTRL_BUFSIZE) 270 hfc->ctrl_in_idx = 0; /* pointer wrap */ 271 if (++hfc->ctrl_cnt == 1) 272 ctrl_start_transfer(hfc); 273 return (0); 274} /* queue_control_request */ 275 276static int 277control_action_handler(hfcusb_data * hfc, int reg, int val, int action) 278{ 279 if (!action) 280 return (1); /* no action defined */ 281 return (0); 282} 283 284/***************************************************************/ 285/* control completion routine handling background control cmds */ 286/***************************************************************/ 287static void 288ctrl_complete(struct urb *urb, struct pt_regs *regs) 289{ 290 hfcusb_data *hfc = (hfcusb_data *) urb->context; 291 ctrl_buft *buf; 292 293 urb->dev = hfc->dev; 294 if (hfc->ctrl_cnt) { 295 buf = &hfc->ctrl_buff[hfc->ctrl_out_idx]; 296 control_action_handler(hfc, buf->hfc_reg, buf->reg_val, 297 buf->action); 298 299 hfc->ctrl_cnt--; /* decrement actual count */ 300 if (++hfc->ctrl_out_idx >= HFC_CTRL_BUFSIZE) 301 hfc->ctrl_out_idx = 0; /* pointer wrap */ 302 303 ctrl_start_transfer(hfc); /* start next transfer */ 304 } 305} /* ctrl_complete */ 306 307/***************************************************/ 308/* write led data to auxport & invert if necessary */ 309/***************************************************/ 310static void 311write_led(hfcusb_data * hfc, __u8 led_state) 312{ 313 if (led_state != hfc->old_led_state) { 314 hfc->old_led_state = led_state; 315 queue_control_request(hfc, HFCUSB_P_DATA, led_state, 1); 316 } 317} 318 319/**************************/ 320/* handle LED bits */ 321/**************************/ 322static void 323set_led_bit(hfcusb_data * hfc, signed short led_bits, int unset) 324{ 325 if (unset) { 326 if (led_bits < 0) 327 hfc->led_state |= abs(led_bits); 328 else 329 hfc->led_state &= ~led_bits; 330 } else { 331 if (led_bits < 0) 332 hfc->led_state &= ~abs(led_bits); 333 else 334 hfc->led_state |= led_bits; 335 } 336} 337 338/******************************************/ 339/* invert B-channel LEDs if data is sent */ 340/******************************************/ 341static void 342led_timer(hfcusb_data * hfc) 343{ 344 static int cnt = 0; 345 346 if (cnt) { 347 if (hfc->led_b_active & 1) 348 set_led_bit(hfc, vdata[hfc->vend_idx].led_bits[2], 349 0); 350 if (hfc->led_b_active & 2) 351 set_led_bit(hfc, vdata[hfc->vend_idx].led_bits[3], 352 0); 353 } else { 354 if (!(hfc->led_b_active & 1) || hfc->led_new_data & 1) 355 set_led_bit(hfc, vdata[hfc->vend_idx].led_bits[2], 356 1); 357 if (!(hfc->led_b_active & 2) || hfc->led_new_data & 2) 358 set_led_bit(hfc, vdata[hfc->vend_idx].led_bits[3], 359 1); 360 } 361 362 write_led(hfc, hfc->led_state); 363 hfc->led_new_data = 0; 364 365 cnt = !cnt; 366 367 /* restart 4 hz timer */ 368 if (!timer_pending(&hfc->led_timer)) { 369 add_timer(&hfc->led_timer); 370 hfc->led_timer.expires = jiffies + (LED_TIME * HZ) / 1000; 371 } 372} 373 374/**************************/ 375/* handle LED requests */ 376/**************************/ 377static void 378handle_led(hfcusb_data * hfc, int event) 379{ 380 /* if no scheme -> no LED action */ 381 if (vdata[hfc->vend_idx].led_scheme == LED_OFF) 382 return; 383 384 switch (event) { 385 case LED_POWER_ON: 386 set_led_bit(hfc, vdata[hfc->vend_idx].led_bits[0], 387 0); 388 set_led_bit(hfc, vdata[hfc->vend_idx].led_bits[1], 389 1); 390 set_led_bit(hfc, vdata[hfc->vend_idx].led_bits[2], 391 1); 392 set_led_bit(hfc, vdata[hfc->vend_idx].led_bits[3], 393 1); 394 break; 395 case LED_POWER_OFF: /* no Power off handling */ 396 break; 397 case LED_S0_ON: 398 set_led_bit(hfc, vdata[hfc->vend_idx].led_bits[1], 399 0); 400 break; 401 case LED_S0_OFF: 402 set_led_bit(hfc, vdata[hfc->vend_idx].led_bits[1], 403 1); 404 break; 405 case LED_B1_ON: 406 hfc->led_b_active |= 1; 407 break; 408 case LED_B1_OFF: 409 hfc->led_b_active &= ~1; 410 break; 411 case LED_B1_DATA: 412 hfc->led_new_data |= 1; 413 break; 414 case LED_B2_ON: 415 hfc->led_b_active |= 2; 416 break; 417 case LED_B2_OFF: 418 hfc->led_b_active &= ~2; 419 break; 420 case LED_B2_DATA: 421 hfc->led_new_data |= 2; 422 break; 423 } 424 425 write_led(hfc, hfc->led_state); 426} 427 428/********************************/ 429/* called when timer t3 expires */ 430/********************************/ 431static void 432l1_timer_expire_t3(hfcusb_data * hfc) 433{ 434 hfc->d_if.ifc.l1l2(&hfc->d_if.ifc, PH_DEACTIVATE | INDICATION, 435 NULL); 436#ifdef CONFIG_HISAX_DEBUG 437 DBG(ISDN_DBG, 438 "HFC-S USB: PH_DEACTIVATE | INDICATION sent (T3 expire)"); 439#endif 440 hfc->l1_activated = FALSE; 441 handle_led(hfc, LED_S0_OFF); 442 /* deactivate : */ 443 queue_control_request(hfc, HFCUSB_STATES, 0x10, 1); 444 queue_control_request(hfc, HFCUSB_STATES, 3, 1); 445} 446 447/********************************/ 448/* called when timer t4 expires */ 449/********************************/ 450static void 451l1_timer_expire_t4(hfcusb_data * hfc) 452{ 453 hfc->d_if.ifc.l1l2(&hfc->d_if.ifc, PH_DEACTIVATE | INDICATION, 454 NULL); 455#ifdef CONFIG_HISAX_DEBUG 456 DBG(ISDN_DBG, 457 "HFC-S USB: PH_DEACTIVATE | INDICATION sent (T4 expire)"); 458#endif 459 hfc->l1_activated = FALSE; 460 handle_led(hfc, LED_S0_OFF); 461} 462 463/*****************************/ 464/* handle S0 state changes */ 465/*****************************/ 466static void 467state_handler(hfcusb_data * hfc, __u8 state) 468{ 469 __u8 old_state; 470 471 old_state = hfc->l1_state; 472 if (state == old_state || state < 1 || state > 8) 473 return; 474 475#ifdef CONFIG_HISAX_DEBUG 476 DBG(ISDN_DBG, "HFC-S USB: new S0 state:%d old_state:%d", state, 477 old_state); 478#endif 479 if (state < 4 || state == 7 || state == 8) { 480 if (timer_pending(&hfc->t3_timer)) 481 del_timer(&hfc->t3_timer); 482#ifdef CONFIG_HISAX_DEBUG 483 DBG(ISDN_DBG, "HFC-S USB: T3 deactivated"); 484#endif 485 } 486 if (state >= 7) { 487 if (timer_pending(&hfc->t4_timer)) 488 del_timer(&hfc->t4_timer); 489#ifdef CONFIG_HISAX_DEBUG 490 DBG(ISDN_DBG, "HFC-S USB: T4 deactivated"); 491#endif 492 } 493 494 if (state == 7 && !hfc->l1_activated) { 495 hfc->d_if.ifc.l1l2(&hfc->d_if.ifc, 496 PH_ACTIVATE | INDICATION, NULL); 497#ifdef CONFIG_HISAX_DEBUG 498 DBG(ISDN_DBG, "HFC-S USB: PH_ACTIVATE | INDICATION sent"); 499#endif 500 hfc->l1_activated = TRUE; 501 handle_led(hfc, LED_S0_ON); 502 } else if (state <= 3 /* && activated */ ) { 503 if (old_state == 7 || old_state == 8) { 504#ifdef CONFIG_HISAX_DEBUG 505 DBG(ISDN_DBG, "HFC-S USB: T4 activated"); 506#endif 507 if (!timer_pending(&hfc->t4_timer)) { 508 hfc->t4_timer.expires = 509 jiffies + (HFC_TIMER_T4 * HZ) / 1000; 510 add_timer(&hfc->t4_timer); 511 } 512 } else { 513 hfc->d_if.ifc.l1l2(&hfc->d_if.ifc, 514 PH_DEACTIVATE | INDICATION, 515 NULL); 516#ifdef CONFIG_HISAX_DEBUG 517 DBG(ISDN_DBG, 518 "HFC-S USB: PH_DEACTIVATE | INDICATION sent"); 519#endif 520 hfc->l1_activated = FALSE; 521 handle_led(hfc, LED_S0_OFF); 522 } 523 } 524 hfc->l1_state = state; 525} 526 527/* prepare iso urb */ 528static void 529fill_isoc_urb(struct urb *urb, struct usb_device *dev, unsigned int pipe, 530 void *buf, int num_packets, int packet_size, int interval, 531 usb_complete_t complete, void *context) 532{ 533 int k; 534 535 spin_lock_init(&urb->lock); 536 urb->dev = dev; 537 urb->pipe = pipe; 538 urb->complete = complete; 539 urb->number_of_packets = num_packets; 540 urb->transfer_buffer_length = packet_size * num_packets; 541 urb->context = context; 542 urb->transfer_buffer = buf; 543 urb->transfer_flags = URB_ISO_ASAP; 544 urb->actual_length = 0; 545 urb->interval = interval; 546 for (k = 0; k < num_packets; k++) { 547 urb->iso_frame_desc[k].offset = packet_size * k; 548 urb->iso_frame_desc[k].length = packet_size; 549 urb->iso_frame_desc[k].actual_length = 0; 550 } 551} 552 553/* allocs urbs and start isoc transfer with two pending urbs to avoid 554 gaps in the transfer chain */ 555static int 556start_isoc_chain(usb_fifo * fifo, int num_packets_per_urb, 557 usb_complete_t complete, int packet_size) 558{ 559 int i, k, errcode; 560 561 printk(KERN_INFO "HFC-S USB: starting ISO-chain for Fifo %i\n", 562 fifo->fifonum); 563 564 /* allocate Memory for Iso out Urbs */ 565 for (i = 0; i < 2; i++) { 566 if (!(fifo->iso[i].purb)) { 567 fifo->iso[i].purb = 568 usb_alloc_urb(num_packets_per_urb, GFP_KERNEL); 569 if (!(fifo->iso[i].purb)) { 570 printk(KERN_INFO 571 "alloc urb for fifo %i failed!!!", 572 fifo->fifonum); 573 } 574 fifo->iso[i].owner_fifo = (struct usb_fifo *) fifo; 575 576 /* Init the first iso */ 577 if (ISO_BUFFER_SIZE >= 578 (fifo->usb_packet_maxlen * 579 num_packets_per_urb)) { 580 fill_isoc_urb(fifo->iso[i].purb, 581 fifo->hfc->dev, fifo->pipe, 582 fifo->iso[i].buffer, 583 num_packets_per_urb, 584 fifo->usb_packet_maxlen, 585 fifo->intervall, complete, 586 &fifo->iso[i]); 587 memset(fifo->iso[i].buffer, 0, 588 sizeof(fifo->iso[i].buffer)); 589 /* defining packet delimeters in fifo->buffer */ 590 for (k = 0; k < num_packets_per_urb; k++) { 591 fifo->iso[i].purb-> 592 iso_frame_desc[k].offset = 593 k * packet_size; 594 fifo->iso[i].purb-> 595 iso_frame_desc[k].length = 596 packet_size; 597 } 598 } else { 599 printk(KERN_INFO 600 "HFC-S USB: ISO Buffer size to small!\n"); 601 } 602 } 603 fifo->bit_line = BITLINE_INF; 604 605 errcode = usb_submit_urb(fifo->iso[i].purb, GFP_KERNEL); 606 fifo->active = (errcode >= 0) ? 1 : 0; 607 if (errcode < 0) { 608 printk(KERN_INFO "HFC-S USB: %s URB nr:%d\n", 609 symbolic(urb_errlist, errcode), i); 610 }; 611 } 612 return (fifo->active); 613} 614 615/* stops running iso chain and frees their pending urbs */ 616static void 617stop_isoc_chain(usb_fifo * fifo) 618{ 619 int i; 620 621 for (i = 0; i < 2; i++) { 622 if (fifo->iso[i].purb) { 623#ifdef CONFIG_HISAX_DEBUG 624 DBG(USB_DBG, 625 "HFC-S USB: Stopping iso chain for fifo %i.%i", 626 fifo->fifonum, i); 627#endif 628 usb_unlink_urb(fifo->iso[i].purb); 629 usb_free_urb(fifo->iso[i].purb); 630 fifo->iso[i].purb = NULL; 631 } 632 } 633 if (fifo->urb) { 634 usb_unlink_urb(fifo->urb); 635 usb_free_urb(fifo->urb); 636 fifo->urb = NULL; 637 } 638 fifo->active = 0; 639} 640 641/* defines how much ISO packets are handled in one URB */ 642static int iso_packets[8] = 643 { ISOC_PACKETS_B, ISOC_PACKETS_B, ISOC_PACKETS_B, ISOC_PACKETS_B, 644 ISOC_PACKETS_D, ISOC_PACKETS_D, ISOC_PACKETS_D, ISOC_PACKETS_D 645}; 646 647/*****************************************************/ 648/* transmit completion routine for all ISO tx fifos */ 649/*****************************************************/ 650static void 651tx_iso_complete(struct urb *urb, struct pt_regs *regs) 652{ 653 iso_urb_struct *context_iso_urb = (iso_urb_struct *) urb->context; 654 usb_fifo *fifo = context_iso_urb->owner_fifo; 655 hfcusb_data *hfc = fifo->hfc; 656 int k, tx_offset, num_isoc_packets, sink, len, current_len, 657 errcode; 658 int frame_complete, transp_mode, fifon, status; 659 __u8 threshbit; 660 __u8 threshtable[8] = { 1, 2, 4, 8, 0x10, 0x20, 0x40, 0x80 }; 661 662 fifon = fifo->fifonum; 663 status = urb->status; 664 665 tx_offset = 0; 666 667 if (fifo->active && !status) { 668 transp_mode = 0; 669 if (fifon < 4 && hfc->b_mode[fifon / 2] == L1_MODE_TRANS) 670 transp_mode = TRUE; 671 672 /* is FifoFull-threshold set for our channel? */ 673 threshbit = threshtable[fifon] & hfc->threshold_mask; 674 num_isoc_packets = iso_packets[fifon]; 675 676 /* predict dataflow to avoid fifo overflow */ 677 if (fifon >= HFCUSB_D_TX) { 678 sink = (threshbit) ? SINK_DMIN : SINK_DMAX; 679 } else { 680 sink = (threshbit) ? SINK_MIN : SINK_MAX; 681 } 682 fill_isoc_urb(urb, fifo->hfc->dev, fifo->pipe, 683 context_iso_urb->buffer, num_isoc_packets, 684 fifo->usb_packet_maxlen, fifo->intervall, 685 tx_iso_complete, urb->context); 686 memset(context_iso_urb->buffer, 0, 687 sizeof(context_iso_urb->buffer)); 688 frame_complete = FALSE; 689 /* Generate next Iso Packets */ 690 for (k = 0; k < num_isoc_packets; ++k) { 691 if (fifo->skbuff) { 692 len = fifo->skbuff->len; 693 /* we lower data margin every msec */ 694 fifo->bit_line -= sink; 695 current_len = (0 - fifo->bit_line) / 8; 696 /* maximum 15 byte for every ISO packet makes our life easier */ 697 if (current_len > 14) 698 current_len = 14; 699 current_len = 700 (len <= 701 current_len) ? len : current_len; 702 /* how much bit do we put on the line? */ 703 fifo->bit_line += current_len * 8; 704 705 context_iso_urb->buffer[tx_offset] = 0; 706 if (current_len == len) { 707 if (!transp_mode) { 708 /* here frame completion */ 709 context_iso_urb-> 710 buffer[tx_offset] = 1; 711 /* add 2 byte flags and 16bit CRC at end of ISDN frame */ 712 fifo->bit_line += 32; 713 } 714 frame_complete = TRUE; 715 } 716 717 memcpy(context_iso_urb->buffer + 718 tx_offset + 1, fifo->skbuff->data, 719 current_len); 720 skb_pull(fifo->skbuff, current_len); 721 722 /* define packet delimeters within the URB buffer */ 723 urb->iso_frame_desc[k].offset = tx_offset; 724 urb->iso_frame_desc[k].length = 725 current_len + 1; 726 727 tx_offset += (current_len + 1); 728 if (!transp_mode) { 729 if (fifon == HFCUSB_B1_TX) 730 handle_led(hfc, 731 LED_B1_DATA); 732 if (fifon == HFCUSB_B2_TX) 733 handle_led(hfc, 734 LED_B2_DATA); 735 } 736 } else { 737 urb->iso_frame_desc[k].offset = 738 tx_offset++; 739 740 urb->iso_frame_desc[k].length = 1; 741 fifo->bit_line -= sink; /* we lower data margin every msec */ 742 743 if (fifo->bit_line < BITLINE_INF) { 744 fifo->bit_line = BITLINE_INF; 745 } 746 } 747 748 if (frame_complete) { 749 fifo->delete_flg = TRUE; 750 fifo->hif->l1l2(fifo->hif, 751 PH_DATA | CONFIRM, 752 (void *) fifo->skbuff-> 753 truesize); 754 if (fifo->skbuff && fifo->delete_flg) { 755 dev_kfree_skb_any(fifo->skbuff); 756 fifo->skbuff = NULL; 757 fifo->delete_flg = FALSE; 758 } 759 frame_complete = FALSE; 760 } 761 } 762 errcode = usb_submit_urb(urb, GFP_ATOMIC); 763 if (errcode < 0) { 764 printk(KERN_INFO 765 "HFC-S USB: error submitting ISO URB: %d \n", 766 errcode); 767 } 768 } else { 769 if (status && !hfc->disc_flag) { 770 printk(KERN_INFO 771 "HFC-S USB: tx_iso_complete : urb->status %s (%i), fifonum=%d\n", 772 symbolic(urb_errlist, status), status, 773 fifon); 774 } 775 } 776} /* tx_iso_complete */ 777 778/*****************************************************/ 779/* receive completion routine for all ISO tx fifos */ 780/*****************************************************/ 781static void 782rx_iso_complete(struct urb *urb, struct pt_regs *regs) 783{ 784 iso_urb_struct *context_iso_urb = (iso_urb_struct *) urb->context; 785 usb_fifo *fifo = context_iso_urb->owner_fifo; 786 hfcusb_data *hfc = fifo->hfc; 787 int k, len, errcode, offset, num_isoc_packets, fifon, maxlen, 788 status; 789 unsigned int iso_status; 790 __u8 *buf; 791 static __u8 eof[8]; 792#ifdef CONFIG_HISAX_DEBUG 793 __u8 i; 794#endif 795 796 fifon = fifo->fifonum; 797 status = urb->status; 798 799 if (urb->status == -EOVERFLOW) { 800#ifdef CONFIG_HISAX_DEBUG 801 DBG(USB_DBG, 802 "HFC-USB: ignoring USB DATAOVERRUN for fifo %i \n", 803 fifon); 804#endif 805 status = 0; 806 } 807 if (fifo->active && !status) { 808 num_isoc_packets = iso_packets[fifon]; 809 maxlen = fifo->usb_packet_maxlen; 810 for (k = 0; k < num_isoc_packets; ++k) { 811 len = urb->iso_frame_desc[k].actual_length; 812 offset = urb->iso_frame_desc[k].offset; 813 buf = context_iso_urb->buffer + offset; 814 iso_status = urb->iso_frame_desc[k].status; 815#ifdef CONFIG_HISAX_DEBUG 816 if (iso_status && !hfc->disc_flag) 817 DBG(USB_DBG, 818 "HFC-S USB: ISO packet failure - status:%x", 819 iso_status); 820 821 if ((fifon == 5) && (debug > 1)) { 822 printk(KERN_INFO 823 "HFC-S USB: ISO-D-RX lst_urblen:%2d " 824 "act_urblen:%2d max-urblen:%2d " 825 "EOF:0x%0x DATA: ", 826 fifo->last_urblen, len, maxlen, 827 eof[5]); 828 for (i = 0; i < len; i++) 829 printk("%.2x ", buf[i]); 830 printk("\n"); 831 } 832#endif 833 if (fifo->last_urblen != maxlen) { 834 /* the threshold mask is in the 2nd status byte */ 835 hfc->threshold_mask = buf[1]; 836 /* care for L1 state only for D-Channel 837 to avoid overlapped iso completions */ 838 if (fifon == 5) { 839 /* the S0 state is in the upper half 840 of the 1st status byte */ 841 state_handler(hfc, buf[0] >> 4); 842 } 843 eof[fifon] = buf[0] & 1; 844 if (len > 2) 845 collect_rx_frame(fifo, buf + 2, 846 len - 2, 847 (len < 848 maxlen) ? 849 eof[fifon] : 0); 850 } else { 851 collect_rx_frame(fifo, buf, len, 852 (len < 853 maxlen) ? eof[fifon] : 854 0); 855 } 856 fifo->last_urblen = len; 857 } 858 859 fill_isoc_urb(urb, fifo->hfc->dev, fifo->pipe, 860 context_iso_urb->buffer, num_isoc_packets, 861 fifo->usb_packet_maxlen, fifo->intervall, 862 rx_iso_complete, urb->context); 863 errcode = usb_submit_urb(urb, GFP_ATOMIC); 864 if (errcode < 0) { 865 printk(KERN_INFO 866 "HFC-S USB: error submitting ISO URB: %d \n", 867 errcode); 868 } 869 } else { 870 if (status && !hfc->disc_flag) { 871 printk(KERN_INFO 872 "HFC-S USB: rx_iso_complete : " 873 "urb->status %d, fifonum %d\n", 874 status, fifon); 875 } 876 } 877} /* rx_iso_complete */ 878 879/*****************************************************/ 880/* collect data from interrupt or isochron in */ 881/*****************************************************/ 882static void 883collect_rx_frame(usb_fifo * fifo, __u8 * data, int len, int finish) 884{ 885 hfcusb_data *hfc = fifo->hfc; 886 int transp_mode, fifon; 887#ifdef CONFIG_HISAX_DEBUG 888 int i; 889#endif 890 fifon = fifo->fifonum; 891 transp_mode = 0; 892 if (fifon < 4 && hfc->b_mode[fifon / 2] == L1_MODE_TRANS) 893 transp_mode = TRUE; 894 895 if (!fifo->skbuff) { 896 fifo->skbuff = dev_alloc_skb(fifo->max_size + 3); 897 if (!fifo->skbuff) { 898 printk(KERN_INFO 899 "HFC-S USB: cannot allocate buffer (dev_alloc_skb) fifo:%d\n", 900 fifon); 901 return; 902 } 903 } 904 if (len) { 905 if (fifo->skbuff->len + len < fifo->max_size) { 906 memcpy(skb_put(fifo->skbuff, len), data, len); 907 } else { 908#ifdef CONFIG_HISAX_DEBUG 909 printk(KERN_INFO "HFC-S USB: "); 910 for (i = 0; i < 15; i++) 911 printk("%.2x ", 912 fifo->skbuff->data[fifo->skbuff-> 913 len - 15 + i]); 914 printk("\n"); 915#endif 916 printk(KERN_INFO 917 "HCF-USB: got frame exceeded fifo->max_size:%d on fifo:%d\n", 918 fifo->max_size, fifon); 919 } 920 } 921 if (transp_mode && fifo->skbuff->len >= 128) { 922 fifo->hif->l1l2(fifo->hif, PH_DATA | INDICATION, 923 fifo->skbuff); 924 fifo->skbuff = NULL; 925 return; 926 } 927 /* we have a complete hdlc packet */ 928 if (finish) { 929 if ((!fifo->skbuff->data[fifo->skbuff->len - 1]) 930 && (fifo->skbuff->len > 3)) { 931 /* remove CRC & status */ 932 skb_trim(fifo->skbuff, fifo->skbuff->len - 3); 933 if (fifon == HFCUSB_PCM_RX) { 934 fifo->hif->l1l2(fifo->hif, 935 PH_DATA_E | INDICATION, 936 fifo->skbuff); 937 } else 938 fifo->hif->l1l2(fifo->hif, 939 PH_DATA | INDICATION, 940 fifo->skbuff); 941 fifo->skbuff = NULL; /* buffer was freed from upper layer */ 942 } else { 943 if (fifo->skbuff->len > 3) { 944 printk(KERN_INFO 945 "HFC-S USB: got frame %d bytes but CRC ERROR on fifo:%d!!!\n", 946 fifo->skbuff->len, fifon); 947#ifdef CONFIG_HISAX_DEBUG 948 if (debug > 1) { 949 printk(KERN_INFO "HFC-S USB: "); 950 for (i = 0; i < 15; i++) 951 printk("%.2x ", 952 fifo->skbuff-> 953 data[fifo->skbuff-> 954 len - 15 + i]); 955 printk("\n"); 956 } 957#endif 958 } 959#ifdef CONFIG_HISAX_DEBUG 960 else { 961 printk(KERN_INFO 962 "HFC-S USB: frame to small (%d bytes)!!!\n", 963 fifo->skbuff->len); 964 } 965#endif 966 skb_trim(fifo->skbuff, 0); 967 } 968 } 969 970 /* LED flashing only in HDLC mode */ 971 if (!transp_mode) { 972 if (fifon == HFCUSB_B1_RX) 973 handle_led(hfc, LED_B1_DATA); 974 if (fifon == HFCUSB_B2_RX) 975 handle_led(hfc, LED_B2_DATA); 976 } 977} 978 979/***********************************************/ 980/* receive completion routine for all rx fifos */ 981/***********************************************/ 982static void 983rx_complete(struct urb *urb, struct pt_regs *regs) 984{ 985 int len; 986 int status; 987 __u8 *buf, maxlen, fifon; 988 usb_fifo *fifo = (usb_fifo *) urb->context; 989 hfcusb_data *hfc = fifo->hfc; 990 static __u8 eof[8]; 991#ifdef CONFIG_HISAX_DEBUG 992 __u8 i; 993#endif 994 995 urb->dev = hfc->dev; /* security init */ 996 997 fifon = fifo->fifonum; 998 if ((!fifo->active) || (urb->status)) { 999#ifdef CONFIG_HISAX_DEBUG 1000 DBG(USB_DBG, "HFC-S USB: RX-Fifo %i is going down (%i)", 1001 fifon, urb->status); 1002#endif 1003 fifo->urb->interval = 0; /* cancel automatic rescheduling */ 1004 if (fifo->skbuff) { 1005 dev_kfree_skb_any(fifo->skbuff); 1006 fifo->skbuff = NULL; 1007 } 1008 return; 1009 } 1010 len = urb->actual_length; 1011 buf = fifo->buffer; 1012 maxlen = fifo->usb_packet_maxlen; 1013 1014#ifdef CONFIG_HISAX_DEBUG 1015 if ((fifon == 5) && (debug > 1)) { 1016 printk(KERN_INFO 1017 "HFC-S USB: INT-D-RX lst_urblen:%2d act_urblen:%2d max-urblen:%2d EOF:0x%0x DATA: ", 1018 fifo->last_urblen, len, maxlen, eof[5]); 1019 for (i = 0; i < len; i++) 1020 printk("%.2x ", buf[i]); 1021 printk("\n"); 1022 } 1023#endif 1024 1025 if (fifo->last_urblen != fifo->usb_packet_maxlen) { 1026 /* the threshold mask is in the 2nd status byte */ 1027 hfc->threshold_mask = buf[1]; 1028 /* the S0 state is in the upper half of the 1st status byte */ 1029 state_handler(hfc, buf[0] >> 4); 1030 eof[fifon] = buf[0] & 1; 1031 /* if we have more than the 2 status bytes -> collect data */ 1032 if (len > 2) 1033 collect_rx_frame(fifo, buf + 2, 1034 urb->actual_length - 2, 1035 (len < maxlen) ? eof[fifon] : 0); 1036 } else { 1037 collect_rx_frame(fifo, buf, urb->actual_length, 1038 (len < maxlen) ? eof[fifon] : 0); 1039 } 1040 fifo->last_urblen = urb->actual_length; 1041 status = usb_submit_urb(urb, GFP_ATOMIC); 1042 if (status) { 1043 printk(KERN_INFO 1044 "HFC-S USB: error resubmitting URN at rx_complete...\n"); 1045 } 1046} /* rx_complete */ 1047 1048/***************************************************/ 1049/* start the interrupt transfer for the given fifo */ 1050/***************************************************/ 1051static void 1052start_int_fifo(usb_fifo * fifo) 1053{ 1054 int errcode; 1055 1056 printk(KERN_INFO "HFC-S USB: starting intr IN fifo:%d\n", 1057 fifo->fifonum); 1058 1059 if (!fifo->urb) { 1060 fifo->urb = usb_alloc_urb(0, GFP_KERNEL); 1061 if (!fifo->urb) 1062 return; 1063 } 1064 usb_fill_int_urb(fifo->urb, fifo->hfc->dev, fifo->pipe, 1065 fifo->buffer, fifo->usb_packet_maxlen, 1066 rx_complete, fifo, fifo->intervall); 1067 fifo->active = 1; /* must be marked active */ 1068 errcode = usb_submit_urb(fifo->urb, GFP_KERNEL); 1069 if (errcode) { 1070 printk(KERN_INFO 1071 "HFC-S USB: submit URB error(start_int_info): status:%i\n", 1072 errcode); 1073 fifo->active = 0; 1074 fifo->skbuff = NULL; 1075 } 1076} /* start_int_fifo */ 1077 1078/*****************************/ 1079/* set the B-channel mode */ 1080/*****************************/ 1081static void 1082set_hfcmode(hfcusb_data * hfc, int channel, int mode) 1083{ 1084 __u8 val, idx_table[2] = { 0, 2 }; 1085 1086 if (hfc->disc_flag) { 1087 return; 1088 } 1089#ifdef CONFIG_HISAX_DEBUG 1090 DBG(ISDN_DBG, "HFC-S USB: setting channel %d to mode %d", channel, 1091 mode); 1092#endif 1093 hfc->b_mode[channel] = mode; 1094 1095 /* setup CON_HDLC */ 1096 val = 0; 1097 if (mode != L1_MODE_NULL) 1098 val = 8; /* enable fifo? */ 1099 if (mode == L1_MODE_TRANS) 1100 val |= 2; /* set transparent bit */ 1101 1102 /* set FIFO to transmit register */ 1103 queue_control_request(hfc, HFCUSB_FIFO, idx_table[channel], 1); 1104 queue_control_request(hfc, HFCUSB_CON_HDLC, val, 1); 1105 /* reset fifo */ 1106 queue_control_request(hfc, HFCUSB_INC_RES_F, 2, 1); 1107 /* set FIFO to receive register */ 1108 queue_control_request(hfc, HFCUSB_FIFO, idx_table[channel] + 1, 1); 1109 queue_control_request(hfc, HFCUSB_CON_HDLC, val, 1); 1110 /* reset fifo */ 1111 queue_control_request(hfc, HFCUSB_INC_RES_F, 2, 1); 1112 1113 val = 0x40; 1114 if (hfc->b_mode[0]) 1115 val |= 1; 1116 if (hfc->b_mode[1]) 1117 val |= 2; 1118 queue_control_request(hfc, HFCUSB_SCTRL, val, 1); 1119 1120 val = 0; 1121 if (hfc->b_mode[0]) 1122 val |= 1; 1123 if (hfc->b_mode[1]) 1124 val |= 2; 1125 queue_control_request(hfc, HFCUSB_SCTRL_R, val, 1); 1126 1127 if (mode == L1_MODE_NULL) { 1128 if (channel) 1129 handle_led(hfc, LED_B2_OFF); 1130 else 1131 handle_led(hfc, LED_B1_OFF); 1132 } else { 1133 if (channel) 1134 handle_led(hfc, LED_B2_ON); 1135 else 1136 handle_led(hfc, LED_B1_ON); 1137 } 1138} 1139 1140void 1141hfc_usb_l2l1(struct hisax_if *my_hisax_if, int pr, void *arg) 1142{ 1143 usb_fifo *fifo = my_hisax_if->priv; 1144 hfcusb_data *hfc = fifo->hfc; 1145 1146 switch (pr) { 1147 case PH_ACTIVATE | REQUEST: 1148 if (fifo->fifonum == HFCUSB_D_TX) { 1149#ifdef CONFIG_HISAX_DEBUG 1150 DBG(ISDN_DBG, 1151 "HFC_USB: hfc_usb_d_l2l1 D-chan: PH_ACTIVATE | REQUEST"); 1152#endif 1153 if (hfc->l1_state != 3 1154 && hfc->l1_state != 7) { 1155 hfc->d_if.ifc.l1l2(&hfc->d_if.ifc, 1156 PH_DEACTIVATE | 1157 INDICATION, 1158 NULL); 1159#ifdef CONFIG_HISAX_DEBUG 1160 DBG(ISDN_DBG, 1161 "HFC-S USB: PH_DEACTIVATE | INDICATION sent (not state 3 or 7)"); 1162#endif 1163 } else { 1164 if (hfc->l1_state == 7) { /* l1 already active */ 1165 hfc->d_if.ifc.l1l2(&hfc-> 1166 d_if. 1167 ifc, 1168 PH_ACTIVATE 1169 | 1170 INDICATION, 1171 NULL); 1172#ifdef CONFIG_HISAX_DEBUG 1173 DBG(ISDN_DBG, 1174 "HFC-S USB: PH_ACTIVATE | INDICATION sent again ;)"); 1175#endif 1176 } else { 1177 /* force sending sending INFO1 */ 1178 queue_control_request(hfc, 1179 HFCUSB_STATES, 1180 0x14, 1181 1); 1182 mdelay(1); 1183 /* start l1 activation */ 1184 queue_control_request(hfc, 1185 HFCUSB_STATES, 1186 0x04, 1187 1); 1188 if (!timer_pending 1189 (&hfc->t3_timer)) { 1190 hfc->t3_timer. 1191 expires = 1192 jiffies + 1193 (HFC_TIMER_T3 * 1194 HZ) / 1000; 1195 add_timer(&hfc-> 1196 t3_timer); 1197 } 1198 } 1199 } 1200 } else { 1201#ifdef CONFIG_HISAX_DEBUG 1202 DBG(ISDN_DBG, 1203 "HFC_USB: hfc_usb_d_l2l1 Bx-chan: PH_ACTIVATE | REQUEST"); 1204#endif 1205 set_hfcmode(hfc, 1206 (fifo->fifonum == 1207 HFCUSB_B1_TX) ? 0 : 1, 1208 (int) arg); 1209 fifo->hif->l1l2(fifo->hif, 1210 PH_ACTIVATE | INDICATION, 1211 NULL); 1212 } 1213 break; 1214 case PH_DEACTIVATE | REQUEST: 1215 if (fifo->fifonum == HFCUSB_D_TX) { 1216#ifdef CONFIG_HISAX_DEBUG 1217 DBG(ISDN_DBG, 1218 "HFC_USB: hfc_usb_d_l2l1 D-chan: PH_DEACTIVATE | REQUEST"); 1219#endif 1220 printk(KERN_INFO 1221 "HFC-S USB: ISDN TE device should not deativate...\n"); 1222 } else { 1223#ifdef CONFIG_HISAX_DEBUG 1224 DBG(ISDN_DBG, 1225 "HFC_USB: hfc_usb_d_l2l1 Bx-chan: PH_DEACTIVATE | REQUEST"); 1226#endif 1227 set_hfcmode(hfc, 1228 (fifo->fifonum == 1229 HFCUSB_B1_TX) ? 0 : 1, 1230 (int) L1_MODE_NULL); 1231 fifo->hif->l1l2(fifo->hif, 1232 PH_DEACTIVATE | INDICATION, 1233 NULL); 1234 } 1235 break; 1236 case PH_DATA | REQUEST: 1237 if (fifo->skbuff && fifo->delete_flg) { 1238 dev_kfree_skb_any(fifo->skbuff); 1239 fifo->skbuff = NULL; 1240 fifo->delete_flg = FALSE; 1241 } 1242 fifo->skbuff = arg; /* we have a new buffer */ 1243 break; 1244 default: 1245 printk(KERN_INFO 1246 "HFC_USB: hfc_usb_d_l2l1: unkown state : %#x\n", 1247 pr); 1248 break; 1249 } 1250} 1251 1252/***************************************************************************/ 1253/* usb_init is called once when a new matching device is detected to setup */ 1254/* main parameters. It registers the driver at the main hisax module. */ 1255/* on success 0 is returned. */ 1256/***************************************************************************/ 1257static int 1258usb_init(hfcusb_data * hfc) 1259{ 1260 usb_fifo *fifo; 1261 int i, err; 1262 u_char b; 1263 struct hisax_b_if *p_b_if[2]; 1264 1265 /* check the chip id */ 1266 if (read_usb(hfc, HFCUSB_CHIP_ID, &b) != 1) { 1267 printk(KERN_INFO "HFC-USB: cannot read chip id\n"); 1268 return (1); 1269 } 1270 if (b != HFCUSB_CHIPID) { 1271 printk(KERN_INFO "HFC-S USB: Invalid chip id 0x%02x\n", b); 1272 return (1); 1273 } 1274 1275 /* first set the needed config, interface and alternate */ 1276 err = usb_set_interface(hfc->dev, hfc->if_used, hfc->alt_used); 1277 1278 /* do Chip reset */ 1279 write_usb(hfc, HFCUSB_CIRM, 8); 1280 /* aux = output, reset off */ 1281 write_usb(hfc, HFCUSB_CIRM, 0x10); 1282 1283 /* set USB_SIZE to match the the wMaxPacketSize for INT or BULK transfers */ 1284 write_usb(hfc, HFCUSB_USB_SIZE, 1285 (hfc->packet_size / 8) | ((hfc->packet_size / 8) << 4)); 1286 1287 /* set USB_SIZE_I to match the the wMaxPacketSize for ISO transfers */ 1288 write_usb(hfc, HFCUSB_USB_SIZE_I, hfc->iso_packet_size); 1289 1290 /* enable PCM/GCI master mode */ 1291 write_usb(hfc, HFCUSB_MST_MODE1, 0); /* set default values */ 1292 write_usb(hfc, HFCUSB_MST_MODE0, 1); /* enable master mode */ 1293 1294 /* init the fifos */ 1295 write_usb(hfc, HFCUSB_F_THRES, 1296 (HFCUSB_TX_THRESHOLD / 1297 8) | ((HFCUSB_RX_THRESHOLD / 8) << 4)); 1298 1299 fifo = hfc->fifos; 1300 for (i = 0; i < HFCUSB_NUM_FIFOS; i++) { 1301 write_usb(hfc, HFCUSB_FIFO, i); /* select the desired fifo */ 1302 fifo[i].skbuff = NULL; /* init buffer pointer */ 1303 fifo[i].max_size = 1304 (i <= HFCUSB_B2_RX) ? MAX_BCH_SIZE : MAX_DFRAME_LEN; 1305 fifo[i].last_urblen = 0; 1306 /* set 2 bit for D- & E-channel */ 1307 write_usb(hfc, HFCUSB_HDLC_PAR, 1308 ((i <= HFCUSB_B2_RX) ? 0 : 2)); 1309 /* rx hdlc, enable IFF for D-channel */ 1310 write_usb(hfc, HFCUSB_CON_HDLC, 1311 ((i == HFCUSB_D_TX) ? 0x09 : 0x08)); 1312 write_usb(hfc, HFCUSB_INC_RES_F, 2); /* reset the fifo */ 1313 } 1314 1315 write_usb(hfc, HFCUSB_CLKDEL, 0x0f); /* clock delay value */ 1316 write_usb(hfc, HFCUSB_STATES, 3 | 0x10); /* set deactivated mode */ 1317 write_usb(hfc, HFCUSB_STATES, 3); /* enable state machine */ 1318 1319 write_usb(hfc, HFCUSB_SCTRL_R, 0); /* disable both B receivers */ 1320 write_usb(hfc, HFCUSB_SCTRL, 0x40); /* disable B transmitters + capacitive mode */ 1321 1322 /* set both B-channel to not connected */ 1323 hfc->b_mode[0] = L1_MODE_NULL; 1324 hfc->b_mode[1] = L1_MODE_NULL; 1325 1326 hfc->l1_activated = FALSE; 1327 hfc->disc_flag = FALSE; 1328 hfc->led_state = 0; 1329 hfc->led_new_data = 0; 1330 hfc->old_led_state = 0; 1331 1332 /* init the t3 timer */ 1333 init_timer(&hfc->t3_timer); 1334 hfc->t3_timer.data = (long) hfc; 1335 hfc->t3_timer.function = (void *) l1_timer_expire_t3; 1336 1337 /* init the t4 timer */ 1338 init_timer(&hfc->t4_timer); 1339 hfc->t4_timer.data = (long) hfc; 1340 hfc->t4_timer.function = (void *) l1_timer_expire_t4; 1341 1342 /* init the led timer */ 1343 init_timer(&hfc->led_timer); 1344 hfc->led_timer.data = (long) hfc; 1345 hfc->led_timer.function = (void *) led_timer; 1346 1347 /* trigger 4 hz led timer */ 1348 if (!timer_pending(&hfc->led_timer)) { 1349 hfc->led_timer.expires = jiffies + (LED_TIME * HZ) / 1000; 1350 add_timer(&hfc->led_timer); 1351 } 1352 1353 /* init the background machinery for control requests */ 1354 hfc->ctrl_read.bRequestType = 0xc0; 1355 hfc->ctrl_read.bRequest = 1; 1356 hfc->ctrl_read.wLength = 1; 1357 hfc->ctrl_write.bRequestType = 0x40; 1358 hfc->ctrl_write.bRequest = 0; 1359 hfc->ctrl_write.wLength = 0; 1360 usb_fill_control_urb(hfc->ctrl_urb, 1361 hfc->dev, 1362 hfc->ctrl_out_pipe, 1363 (u_char *) & hfc->ctrl_write, 1364 NULL, 0, ctrl_complete, hfc); 1365 /* Init All Fifos */ 1366 for (i = 0; i < HFCUSB_NUM_FIFOS; i++) { 1367 hfc->fifos[i].iso[0].purb = NULL; 1368 hfc->fifos[i].iso[1].purb = NULL; 1369 hfc->fifos[i].active = 0; 1370 } 1371 /* register Modul to upper Hisax Layers */ 1372 hfc->d_if.owner = THIS_MODULE; 1373 hfc->d_if.ifc.priv = &hfc->fifos[HFCUSB_D_TX]; 1374 hfc->d_if.ifc.l2l1 = hfc_usb_l2l1; 1375 for (i = 0; i < 2; i++) { 1376 hfc->b_if[i].ifc.priv = &hfc->fifos[HFCUSB_B1_TX + i * 2]; 1377 hfc->b_if[i].ifc.l2l1 = hfc_usb_l2l1; 1378 p_b_if[i] = &hfc->b_if[i]; 1379 } 1380 /* default Prot: EURO ISDN, should be a module_param */ 1381 hfc->protocol = 2; 1382 hisax_register(&hfc->d_if, p_b_if, "hfc_usb", hfc->protocol); 1383 1384#ifdef CONFIG_HISAX_DEBUG 1385 hfc_debug = debug; 1386#endif 1387 1388 for (i = 0; i < 4; i++) 1389 hfc->fifos[i].hif = &p_b_if[i / 2]->ifc; 1390 for (i = 4; i < 8; i++) 1391 hfc->fifos[i].hif = &hfc->d_if.ifc; 1392 1393 /* 3 (+1) INT IN + 3 ISO OUT */ 1394 if (hfc->cfg_used == CNF_3INT3ISO || hfc->cfg_used == CNF_4INT3ISO) { 1395 start_int_fifo(hfc->fifos + HFCUSB_D_RX); 1396 if (hfc->fifos[HFCUSB_PCM_RX].pipe) 1397 start_int_fifo(hfc->fifos + HFCUSB_PCM_RX); 1398 start_int_fifo(hfc->fifos + HFCUSB_B1_RX); 1399 start_int_fifo(hfc->fifos + HFCUSB_B2_RX); 1400 } 1401 /* 3 (+1) ISO IN + 3 ISO OUT */ 1402 if (hfc->cfg_used == CNF_3ISO3ISO || hfc->cfg_used == CNF_4ISO3ISO) { 1403 start_isoc_chain(hfc->fifos + HFCUSB_D_RX, ISOC_PACKETS_D, 1404 rx_iso_complete, 16); 1405 if (hfc->fifos[HFCUSB_PCM_RX].pipe) 1406 start_isoc_chain(hfc->fifos + HFCUSB_PCM_RX, 1407 ISOC_PACKETS_D, rx_iso_complete, 1408 16); 1409 start_isoc_chain(hfc->fifos + HFCUSB_B1_RX, ISOC_PACKETS_B, 1410 rx_iso_complete, 16); 1411 start_isoc_chain(hfc->fifos + HFCUSB_B2_RX, ISOC_PACKETS_B, 1412 rx_iso_complete, 16); 1413 } 1414 1415 start_isoc_chain(hfc->fifos + HFCUSB_D_TX, ISOC_PACKETS_D, 1416 tx_iso_complete, 1); 1417 start_isoc_chain(hfc->fifos + HFCUSB_B1_TX, ISOC_PACKETS_B, 1418 tx_iso_complete, 1); 1419 start_isoc_chain(hfc->fifos + HFCUSB_B2_TX, ISOC_PACKETS_B, 1420 tx_iso_complete, 1); 1421 1422 handle_led(hfc, LED_POWER_ON); 1423 1424 return (0); 1425} /* usb_init */ 1426 1427/*************************************************/ 1428/* function called to probe a new plugged device */ 1429/*************************************************/ 1430static int 1431hfc_usb_probe(struct usb_interface *intf, const struct usb_device_id *id) 1432{ 1433 struct usb_device *dev = interface_to_usbdev(intf); 1434 hfcusb_data *context; 1435 struct usb_host_interface *iface = intf->cur_altsetting; 1436 struct usb_host_interface *iface_used = NULL; 1437 struct usb_host_endpoint *ep; 1438 int ifnum = iface->desc.bInterfaceNumber; 1439 int i, idx, alt_idx, probe_alt_setting, vend_idx, cfg_used, *vcf, 1440 attr, cfg_found, cidx, ep_addr; 1441 int cmptbl[16], small_match, iso_packet_size, packet_size, 1442 alt_used = 0; 1443 1444 vend_idx = 0xffff; 1445 for (i = 0; vdata[i].vendor; i++) { 1446 if (dev->descriptor.idVendor == vdata[i].vendor 1447 && dev->descriptor.idProduct == vdata[i].prod_id) 1448 vend_idx = i; 1449 } 1450#ifdef CONFIG_HISAX_DEBUG 1451 DBG(USB_DBG, 1452 "HFC-USB: probing interface(%d) actalt(%d) minor(%d)\n", ifnum, 1453 iface->desc.bAlternateSetting, intf->minor); 1454#endif 1455 printk(KERN_INFO 1456 "HFC-S USB: probing interface(%d) actalt(%d) minor(%d)\n", 1457 ifnum, iface->desc.bAlternateSetting, intf->minor); 1458 1459 if (vend_idx != 0xffff) { 1460#ifdef CONFIG_HISAX_DEBUG 1461 DBG(USB_DBG, "HFC-S USB: found vendor idx:%d name:%s", 1462 vend_idx, vdata[vend_idx].vend_name); 1463#endif 1464 /* if vendor and product ID is OK, start probing alternate settings */ 1465 alt_idx = 0; 1466 small_match = 0xffff; 1467 1468 /* default settings */ 1469 iso_packet_size = 16; 1470 packet_size = 64; 1471 1472 while (alt_idx < intf->num_altsetting) { 1473 iface = intf->altsetting + alt_idx; 1474 probe_alt_setting = iface->desc.bAlternateSetting; 1475 cfg_used = 0; 1476 1477 /* check for config EOL element */ 1478 while (validconf[cfg_used][0]) { 1479 cfg_found = TRUE; 1480 vcf = validconf[cfg_used]; 1481 /* first endpoint descriptor */ 1482 ep = iface->endpoint; 1483#ifdef CONFIG_HISAX_DEBUG 1484 DBG(USB_DBG, 1485 "HFC-S USB: (if=%d alt=%d cfg_used=%d)\n", 1486 ifnum, probe_alt_setting, cfg_used); 1487#endif 1488 memcpy(cmptbl, vcf, 16 * sizeof(int)); 1489 1490 /* check for all endpoints in this alternate setting */ 1491 for (i = 0; i < iface->desc.bNumEndpoints; 1492 i++) { 1493 ep_addr = 1494 ep->desc.bEndpointAddress; 1495 /* get endpoint base */ 1496 idx = ((ep_addr & 0x7f) - 1) * 2; 1497 if (ep_addr & 0x80) 1498 idx++; 1499 attr = ep->desc.bmAttributes; 1500 if (cmptbl[idx] == EP_NUL) { 1501 cfg_found = FALSE; 1502 } 1503 if (attr == USB_ENDPOINT_XFER_INT 1504 && cmptbl[idx] == EP_INT) 1505 cmptbl[idx] = EP_NUL; 1506 if (attr == USB_ENDPOINT_XFER_BULK 1507 && cmptbl[idx] == EP_BLK) 1508 cmptbl[idx] = EP_NUL; 1509 if (attr == USB_ENDPOINT_XFER_ISOC 1510 && cmptbl[idx] == EP_ISO) 1511 cmptbl[idx] = EP_NUL; 1512 1513 /* check if all INT endpoints match minimum interval */ 1514 if (attr == USB_ENDPOINT_XFER_INT 1515 && ep->desc.bInterval < 1516 vcf[17]) { 1517#ifdef CONFIG_HISAX_DEBUG 1518 if (cfg_found) 1519 DBG(USB_DBG, 1520 "HFC-S USB: Interrupt Endpoint interval < %d found - skipping config", 1521 vcf[17]); 1522#endif 1523 cfg_found = FALSE; 1524 } 1525 ep++; 1526 } 1527 for (i = 0; i < 16; i++) { 1528 /* all entries must be EP_NOP or EP_NUL for a valid config */ 1529 if (cmptbl[i] != EP_NOP 1530 && cmptbl[i] != EP_NUL) 1531 cfg_found = FALSE; 1532 } 1533 if (cfg_found) { 1534 if (cfg_used < small_match) { 1535 small_match = cfg_used; 1536 alt_used = 1537 probe_alt_setting; 1538 iface_used = iface; 1539 } 1540#ifdef CONFIG_HISAX_DEBUG 1541 DBG(USB_DBG, 1542 "HFC-USB: small_match=%x %x\n", 1543 small_match, alt_used); 1544#endif 1545 } 1546 cfg_used++; 1547 } 1548 alt_idx++; 1549 } /* (alt_idx < intf->num_altsetting) */ 1550 1551 /* found a valid USB Ta Endpint config */ 1552 if (small_match != 0xffff) { 1553 iface = iface_used; 1554 if (! 1555 (context = 1556 kmalloc(sizeof(hfcusb_data), GFP_KERNEL))) 1557 return (-ENOMEM); /* got no mem */ 1558 memset(context, 0, sizeof(hfcusb_data)); 1559 1560 ep = iface->endpoint; 1561 vcf = validconf[small_match]; 1562 1563 for (i = 0; i < iface->desc.bNumEndpoints; i++) { 1564 ep_addr = ep->desc.bEndpointAddress; 1565 /* get endpoint base */ 1566 idx = ((ep_addr & 0x7f) - 1) * 2; 1567 if (ep_addr & 0x80) 1568 idx++; 1569 cidx = idx & 7; 1570 attr = ep->desc.bmAttributes; 1571 1572 /* init Endpoints */ 1573 if (vcf[idx] != EP_NOP 1574 && vcf[idx] != EP_NUL) { 1575 switch (attr) { 1576 case USB_ENDPOINT_XFER_INT: 1577 context-> 1578 fifos[cidx]. 1579 pipe = 1580 usb_rcvintpipe 1581 (dev, 1582 ep->desc. 1583 bEndpointAddress); 1584 context-> 1585 fifos[cidx]. 1586 usb_transfer_mode 1587 = USB_INT; 1588 packet_size = 1589 ep->desc. 1590 wMaxPacketSize; 1591 break; 1592 case USB_ENDPOINT_XFER_BULK: 1593 if (ep_addr & 0x80) 1594 context-> 1595 fifos 1596 [cidx]. 1597 pipe = 1598 usb_rcvbulkpipe 1599 (dev, 1600 ep-> 1601 desc. 1602 bEndpointAddress); 1603 else 1604 context-> 1605 fifos 1606 [cidx]. 1607 pipe = 1608 usb_sndbulkpipe 1609 (dev, 1610 ep-> 1611 desc. 1612 bEndpointAddress); 1613 context-> 1614 fifos[cidx]. 1615 usb_transfer_mode 1616 = USB_BULK; 1617 packet_size = 1618 ep->desc. 1619 wMaxPacketSize; 1620 break; 1621 case USB_ENDPOINT_XFER_ISOC: 1622 if (ep_addr & 0x80) 1623 context-> 1624 fifos 1625 [cidx]. 1626 pipe = 1627 usb_rcvisocpipe 1628 (dev, 1629 ep-> 1630 desc. 1631 bEndpointAddress); 1632 else 1633 context-> 1634 fifos 1635 [cidx]. 1636 pipe = 1637 usb_sndisocpipe 1638 (dev, 1639 ep-> 1640 desc. 1641 bEndpointAddress); 1642 context-> 1643 fifos[cidx]. 1644 usb_transfer_mode 1645 = USB_ISOC; 1646 iso_packet_size = 1647 ep->desc. 1648 wMaxPacketSize; 1649 break; 1650 default: 1651 context-> 1652 fifos[cidx]. 1653 pipe = 0; 1654 } /* switch attribute */ 1655 1656 if (context->fifos[cidx].pipe) { 1657 context->fifos[cidx]. 1658 fifonum = cidx; 1659 context->fifos[cidx].hfc = 1660 context; 1661 context->fifos[cidx]. 1662 usb_packet_maxlen = 1663 ep->desc. 1664 wMaxPacketSize; 1665 context->fifos[cidx]. 1666 intervall = 1667 ep->desc.bInterval; 1668 context->fifos[cidx]. 1669 skbuff = NULL; 1670 } 1671 } 1672 ep++; 1673 } 1674 context->dev = dev; /* save device */ 1675 context->if_used = ifnum; /* save used interface */ 1676 context->alt_used = alt_used; /* and alternate config */ 1677 context->ctrl_paksize = dev->descriptor.bMaxPacketSize0; /* control size */ 1678 context->cfg_used = vcf[16]; /* store used config */ 1679 context->vend_idx = vend_idx; /* store found vendor */ 1680 context->packet_size = packet_size; 1681 context->iso_packet_size = iso_packet_size; 1682 1683 /* create the control pipes needed for register access */ 1684 context->ctrl_in_pipe = 1685 usb_rcvctrlpipe(context->dev, 0); 1686 context->ctrl_out_pipe = 1687 usb_sndctrlpipe(context->dev, 0); 1688 context->ctrl_urb = usb_alloc_urb(0, GFP_KERNEL); 1689 1690 printk(KERN_INFO 1691 "HFC-S USB: detected \"%s\"\n", 1692 vdata[vend_idx].vend_name); 1693#ifdef CONFIG_HISAX_DEBUG 1694 DBG(USB_DBG, 1695 "HFC-S USB: Endpoint-Config: %s (if=%d alt=%d)\n", 1696 conf_str[small_match], context->if_used, 1697 context->alt_used); 1698 printk(KERN_INFO 1699 "HFC-S USB: E-channel (\"ECHO:\") logging "); 1700 if (validconf[small_match][18]) 1701 printk(" possible\n"); 1702 else 1703 printk("NOT possible\n"); 1704#endif 1705 /* init the chip and register the driver */ 1706 if (usb_init(context)) { 1707 if (context->ctrl_urb) { 1708 usb_unlink_urb(context->ctrl_urb); 1709 usb_free_urb(context->ctrl_urb); 1710 context->ctrl_urb = NULL; 1711 } 1712 kfree(context); 1713 return (-EIO); 1714 } 1715 usb_set_intfdata(intf, context); 1716 return (0); 1717 } 1718 } else { 1719 printk(KERN_INFO 1720 "HFC-S USB: no valid vendor found in USB descriptor\n"); 1721 } 1722 return (-EIO); 1723} 1724 1725/****************************************************/ 1726/* function called when an active device is removed */ 1727/****************************************************/ 1728static void 1729hfc_usb_disconnect(struct usb_interface 1730 *intf) 1731{ 1732 hfcusb_data *context = usb_get_intfdata(intf); 1733 int i; 1734 printk(KERN_INFO "HFC-S USB: device disconnect\n"); 1735 context->disc_flag = TRUE; 1736 usb_set_intfdata(intf, NULL); 1737 if (!context) 1738 return; 1739 if (timer_pending(&context->t3_timer)) 1740 del_timer(&context->t3_timer); 1741 if (timer_pending(&context->t4_timer)) 1742 del_timer(&context->t4_timer); 1743 if (timer_pending(&context->led_timer)) 1744 del_timer(&context->led_timer); 1745 /* tell all fifos to terminate */ 1746 for (i = 0; i < HFCUSB_NUM_FIFOS; i++) { 1747 if (context->fifos[i].usb_transfer_mode == USB_ISOC) { 1748 if (context->fifos[i].active > 0) { 1749 stop_isoc_chain(&context->fifos[i]); 1750#ifdef CONFIG_HISAX_DEBUG 1751 DBG(USB_DBG, 1752 "HFC-S USB: hfc_usb_disconnect: stopping ISOC chain Fifo no %i", 1753 i); 1754#endif 1755 } 1756 } else { 1757 if (context->fifos[i].active > 0) { 1758 context->fifos[i].active = 0; 1759#ifdef CONFIG_HISAX_DEBUG 1760 DBG(USB_DBG, 1761 "HFC-S USB: hfc_usb_disconnect: unlinking URB for Fifo no %i", 1762 i); 1763#endif 1764 } 1765 if (context->fifos[i].urb) { 1766 usb_unlink_urb(context->fifos[i].urb); 1767 usb_free_urb(context->fifos[i].urb); 1768 context->fifos[i].urb = NULL; 1769 } 1770 } 1771 context->fifos[i].active = 0; 1772 } 1773 /* wait for all URBS to terminate */ 1774 mdelay(10); 1775 if (context->ctrl_urb) { 1776 usb_unlink_urb(context->ctrl_urb); 1777 usb_free_urb(context->ctrl_urb); 1778 context->ctrl_urb = NULL; 1779 } 1780 hisax_unregister(&context->d_if); 1781 kfree(context); /* free our structure again */ 1782} /* hfc_usb_disconnect */ 1783 1784/************************************/ 1785/* our driver information structure */ 1786/************************************/ 1787static struct usb_driver hfc_drv = { 1788 .owner = THIS_MODULE,.name = 1789 "hfc_usb",.id_table = hfc_usb_idtab,.probe = 1790 hfc_usb_probe,.disconnect = hfc_usb_disconnect, 1791}; 1792static void __exit 1793hfc_usb_exit(void) 1794{ 1795#ifdef CONFIG_HISAX_DEBUG 1796 DBG(USB_DBG, "HFC-S USB: calling \"hfc_usb_exit\" ..."); 1797#endif 1798 usb_deregister(&hfc_drv); /* release our driver */ 1799 printk(KERN_INFO "HFC-S USB: module removed\n"); 1800} 1801 1802static int __init 1803hfc_usb_init(void) 1804{ 1805#ifndef CONFIG_HISAX_DEBUG 1806 unsigned int debug = -1; 1807#endif 1808 char revstr[30], datestr[30], dummy[30]; 1809 sscanf(hfcusb_revision, 1810 "%s %s $ %s %s %s $ ", dummy, revstr, 1811 dummy, datestr, dummy); 1812 printk(KERN_INFO 1813 "HFC-S USB: driver module revision %s date %s loaded, (debug=%i)\n", 1814 revstr, datestr, debug); 1815 if (usb_register(&hfc_drv)) { 1816 printk(KERN_INFO 1817 "HFC-S USB: Unable to register HFC-S USB module at usb stack\n"); 1818 return (-1); /* unable to register */ 1819 } 1820 return (0); 1821} 1822 1823module_init(hfc_usb_init); 1824module_exit(hfc_usb_exit); 1825MODULE_AUTHOR(DRIVER_AUTHOR); 1826MODULE_DESCRIPTION(DRIVER_DESC); 1827MODULE_LICENSE("GPL"); 1828MODULE_DEVICE_TABLE(usb, hfc_usb_idtab); 1829