1 // SPDX-License-Identifier: GPL-2.0-or-later 2 /* hfcsusb.c 3 * mISDN driver for Colognechip HFC-S USB chip 4 * 5 * Copyright 2001 by Peter Sprenger (sprenger@moving-bytes.de) 6 * Copyright 2008 by Martin Bachem (info@bachem-it.com) 7 * 8 * module params 9 * debug=<n>, default=0, with n=0xHHHHGGGG 10 * H - l1 driver flags described in hfcsusb.h 11 * G - common mISDN debug flags described at mISDNhw.h 12 * 13 * poll=<n>, default 128 14 * n : burst size of PH_DATA_IND at transparent rx data 15 * 16 * Revision: 0.3.3 (socket), 2008-11-05 17 */ 18 19 #include <linux/module.h> 20 #include <linux/delay.h> 21 #include <linux/usb.h> 22 #include <linux/mISDNhw.h> 23 #include <linux/slab.h> 24 #include "hfcsusb.h" 25 26 static unsigned int debug; 27 static int poll = DEFAULT_TRANSP_BURST_SZ; 28 29 static LIST_HEAD(HFClist); 30 static DEFINE_RWLOCK(HFClock); 31 32 33 MODULE_AUTHOR("Martin Bachem"); 34 MODULE_LICENSE("GPL"); 35 module_param(debug, uint, S_IRUGO | S_IWUSR); 36 module_param(poll, int, 0); 37 38 static int hfcsusb_cnt; 39 40 /* some function prototypes */ 41 static void hfcsusb_ph_command(struct hfcsusb *hw, u_char command); 42 static void release_hw(struct hfcsusb *hw); 43 static void reset_hfcsusb(struct hfcsusb *hw); 44 static void setPortMode(struct hfcsusb *hw); 45 static void hfcsusb_start_endpoint(struct hfcsusb *hw, int channel); 46 static void hfcsusb_stop_endpoint(struct hfcsusb *hw, int channel); 47 static int hfcsusb_setup_bch(struct bchannel *bch, int protocol); 48 static void deactivate_bchannel(struct bchannel *bch); 49 static void hfcsusb_ph_info(struct hfcsusb *hw); 50 51 /* start next background transfer for control channel */ 52 static void 53 ctrl_start_transfer(struct hfcsusb *hw) 54 { 55 if (debug & DBG_HFC_CALL_TRACE) 56 printk(KERN_DEBUG "%s: %s\n", hw->name, __func__); 57 58 if (hw->ctrl_cnt) { 59 hw->ctrl_urb->pipe = hw->ctrl_out_pipe; 60 hw->ctrl_urb->setup_packet = (u_char *)&hw->ctrl_write; 61 hw->ctrl_urb->transfer_buffer = NULL; 62 hw->ctrl_urb->transfer_buffer_length = 0; 63 hw->ctrl_write.wIndex = 64 cpu_to_le16(hw->ctrl_buff[hw->ctrl_out_idx].hfcs_reg); 65 hw->ctrl_write.wValue = 66 cpu_to_le16(hw->ctrl_buff[hw->ctrl_out_idx].reg_val); 67 68 usb_submit_urb(hw->ctrl_urb, GFP_ATOMIC); 69 } 70 } 71 72 /* 73 * queue a control transfer request to write HFC-S USB 74 * chip register using CTRL resuest queue 75 */ 76 static int write_reg(struct hfcsusb *hw, __u8 reg, __u8 val) 77 { 78 struct ctrl_buf *buf; 79 80 if (debug & DBG_HFC_CALL_TRACE) 81 printk(KERN_DEBUG "%s: %s reg(0x%02x) val(0x%02x)\n", 82 hw->name, __func__, reg, val); 83 84 spin_lock(&hw->ctrl_lock); 85 if (hw->ctrl_cnt >= HFC_CTRL_BUFSIZE) { 86 spin_unlock(&hw->ctrl_lock); 87 return 1; 88 } 89 buf = &hw->ctrl_buff[hw->ctrl_in_idx]; 90 buf->hfcs_reg = reg; 91 buf->reg_val = val; 92 if (++hw->ctrl_in_idx >= HFC_CTRL_BUFSIZE) 93 hw->ctrl_in_idx = 0; 94 if (++hw->ctrl_cnt == 1) 95 ctrl_start_transfer(hw); 96 spin_unlock(&hw->ctrl_lock); 97 98 return 0; 99 } 100 101 /* control completion routine handling background control cmds */ 102 static void 103 ctrl_complete(struct urb *urb) 104 { 105 struct hfcsusb *hw = (struct hfcsusb *) urb->context; 106 107 if (debug & DBG_HFC_CALL_TRACE) 108 printk(KERN_DEBUG "%s: %s\n", hw->name, __func__); 109 110 urb->dev = hw->dev; 111 if (hw->ctrl_cnt) { 112 hw->ctrl_cnt--; /* decrement actual count */ 113 if (++hw->ctrl_out_idx >= HFC_CTRL_BUFSIZE) 114 hw->ctrl_out_idx = 0; /* pointer wrap */ 115 116 ctrl_start_transfer(hw); /* start next transfer */ 117 } 118 } 119 120 /* handle LED bits */ 121 static void 122 set_led_bit(struct hfcsusb *hw, signed short led_bits, int set_on) 123 { 124 if (set_on) { 125 if (led_bits < 0) 126 hw->led_state &= ~abs(led_bits); 127 else 128 hw->led_state |= led_bits; 129 } else { 130 if (led_bits < 0) 131 hw->led_state |= abs(led_bits); 132 else 133 hw->led_state &= ~led_bits; 134 } 135 } 136 137 /* handle LED requests */ 138 static void 139 handle_led(struct hfcsusb *hw, int event) 140 { 141 struct hfcsusb_vdata *driver_info = (struct hfcsusb_vdata *) 142 hfcsusb_idtab[hw->vend_idx].driver_info; 143 __u8 tmpled; 144 145 if (driver_info->led_scheme == LED_OFF) 146 return; 147 tmpled = hw->led_state; 148 149 switch (event) { 150 case LED_POWER_ON: 151 set_led_bit(hw, driver_info->led_bits[0], 1); 152 set_led_bit(hw, driver_info->led_bits[1], 0); 153 set_led_bit(hw, driver_info->led_bits[2], 0); 154 set_led_bit(hw, driver_info->led_bits[3], 0); 155 break; 156 case LED_POWER_OFF: 157 set_led_bit(hw, driver_info->led_bits[0], 0); 158 set_led_bit(hw, driver_info->led_bits[1], 0); 159 set_led_bit(hw, driver_info->led_bits[2], 0); 160 set_led_bit(hw, driver_info->led_bits[3], 0); 161 break; 162 case LED_S0_ON: 163 set_led_bit(hw, driver_info->led_bits[1], 1); 164 break; 165 case LED_S0_OFF: 166 set_led_bit(hw, driver_info->led_bits[1], 0); 167 break; 168 case LED_B1_ON: 169 set_led_bit(hw, driver_info->led_bits[2], 1); 170 break; 171 case LED_B1_OFF: 172 set_led_bit(hw, driver_info->led_bits[2], 0); 173 break; 174 case LED_B2_ON: 175 set_led_bit(hw, driver_info->led_bits[3], 1); 176 break; 177 case LED_B2_OFF: 178 set_led_bit(hw, driver_info->led_bits[3], 0); 179 break; 180 } 181 182 if (hw->led_state != tmpled) { 183 if (debug & DBG_HFC_CALL_TRACE) 184 printk(KERN_DEBUG "%s: %s reg(0x%02x) val(x%02x)\n", 185 hw->name, __func__, 186 HFCUSB_P_DATA, hw->led_state); 187 188 write_reg(hw, HFCUSB_P_DATA, hw->led_state); 189 } 190 } 191 192 /* 193 * Layer2 -> Layer 1 Bchannel data 194 */ 195 static int 196 hfcusb_l2l1B(struct mISDNchannel *ch, struct sk_buff *skb) 197 { 198 struct bchannel *bch = container_of(ch, struct bchannel, ch); 199 struct hfcsusb *hw = bch->hw; 200 int ret = -EINVAL; 201 struct mISDNhead *hh = mISDN_HEAD_P(skb); 202 u_long flags; 203 204 if (debug & DBG_HFC_CALL_TRACE) 205 printk(KERN_DEBUG "%s: %s\n", hw->name, __func__); 206 207 switch (hh->prim) { 208 case PH_DATA_REQ: 209 spin_lock_irqsave(&hw->lock, flags); 210 ret = bchannel_senddata(bch, skb); 211 spin_unlock_irqrestore(&hw->lock, flags); 212 if (debug & DBG_HFC_CALL_TRACE) 213 printk(KERN_DEBUG "%s: %s PH_DATA_REQ ret(%i)\n", 214 hw->name, __func__, ret); 215 if (ret > 0) 216 ret = 0; 217 return ret; 218 case PH_ACTIVATE_REQ: 219 if (!test_and_set_bit(FLG_ACTIVE, &bch->Flags)) { 220 hfcsusb_start_endpoint(hw, bch->nr - 1); 221 ret = hfcsusb_setup_bch(bch, ch->protocol); 222 } else 223 ret = 0; 224 if (!ret) 225 _queue_data(ch, PH_ACTIVATE_IND, MISDN_ID_ANY, 226 0, NULL, GFP_KERNEL); 227 break; 228 case PH_DEACTIVATE_REQ: 229 deactivate_bchannel(bch); 230 _queue_data(ch, PH_DEACTIVATE_IND, MISDN_ID_ANY, 231 0, NULL, GFP_KERNEL); 232 ret = 0; 233 break; 234 } 235 if (!ret) 236 dev_kfree_skb(skb); 237 return ret; 238 } 239 240 /* 241 * send full D/B channel status information 242 * as MPH_INFORMATION_IND 243 */ 244 static void 245 hfcsusb_ph_info(struct hfcsusb *hw) 246 { 247 struct ph_info *phi; 248 struct dchannel *dch = &hw->dch; 249 int i; 250 251 phi = kzalloc(struct_size(phi, bch, dch->dev.nrbchan), GFP_ATOMIC); 252 if (!phi) 253 return; 254 255 phi->dch.ch.protocol = hw->protocol; 256 phi->dch.ch.Flags = dch->Flags; 257 phi->dch.state = dch->state; 258 phi->dch.num_bch = dch->dev.nrbchan; 259 for (i = 0; i < dch->dev.nrbchan; i++) { 260 phi->bch[i].protocol = hw->bch[i].ch.protocol; 261 phi->bch[i].Flags = hw->bch[i].Flags; 262 } 263 _queue_data(&dch->dev.D, MPH_INFORMATION_IND, MISDN_ID_ANY, 264 sizeof(struct ph_info_dch) + dch->dev.nrbchan * 265 sizeof(struct ph_info_ch), phi, GFP_ATOMIC); 266 kfree(phi); 267 } 268 269 /* 270 * Layer2 -> Layer 1 Dchannel data 271 */ 272 static int 273 hfcusb_l2l1D(struct mISDNchannel *ch, struct sk_buff *skb) 274 { 275 struct mISDNdevice *dev = container_of(ch, struct mISDNdevice, D); 276 struct dchannel *dch = container_of(dev, struct dchannel, dev); 277 struct mISDNhead *hh = mISDN_HEAD_P(skb); 278 struct hfcsusb *hw = dch->hw; 279 int ret = -EINVAL; 280 u_long flags; 281 282 switch (hh->prim) { 283 case PH_DATA_REQ: 284 if (debug & DBG_HFC_CALL_TRACE) 285 printk(KERN_DEBUG "%s: %s: PH_DATA_REQ\n", 286 hw->name, __func__); 287 288 spin_lock_irqsave(&hw->lock, flags); 289 ret = dchannel_senddata(dch, skb); 290 spin_unlock_irqrestore(&hw->lock, flags); 291 if (ret > 0) { 292 ret = 0; 293 queue_ch_frame(ch, PH_DATA_CNF, hh->id, NULL); 294 } 295 break; 296 297 case PH_ACTIVATE_REQ: 298 if (debug & DBG_HFC_CALL_TRACE) 299 printk(KERN_DEBUG "%s: %s: PH_ACTIVATE_REQ %s\n", 300 hw->name, __func__, 301 (hw->protocol == ISDN_P_NT_S0) ? "NT" : "TE"); 302 303 if (hw->protocol == ISDN_P_NT_S0) { 304 ret = 0; 305 if (test_bit(FLG_ACTIVE, &dch->Flags)) { 306 _queue_data(&dch->dev.D, 307 PH_ACTIVATE_IND, MISDN_ID_ANY, 0, 308 NULL, GFP_ATOMIC); 309 } else { 310 hfcsusb_ph_command(hw, 311 HFC_L1_ACTIVATE_NT); 312 test_and_set_bit(FLG_L2_ACTIVATED, 313 &dch->Flags); 314 } 315 } else { 316 hfcsusb_ph_command(hw, HFC_L1_ACTIVATE_TE); 317 ret = l1_event(dch->l1, hh->prim); 318 } 319 break; 320 321 case PH_DEACTIVATE_REQ: 322 if (debug & DBG_HFC_CALL_TRACE) 323 printk(KERN_DEBUG "%s: %s: PH_DEACTIVATE_REQ\n", 324 hw->name, __func__); 325 test_and_clear_bit(FLG_L2_ACTIVATED, &dch->Flags); 326 327 if (hw->protocol == ISDN_P_NT_S0) { 328 hfcsusb_ph_command(hw, HFC_L1_DEACTIVATE_NT); 329 spin_lock_irqsave(&hw->lock, flags); 330 skb_queue_purge(&dch->squeue); 331 if (dch->tx_skb) { 332 dev_kfree_skb(dch->tx_skb); 333 dch->tx_skb = NULL; 334 } 335 dch->tx_idx = 0; 336 if (dch->rx_skb) { 337 dev_kfree_skb(dch->rx_skb); 338 dch->rx_skb = NULL; 339 } 340 test_and_clear_bit(FLG_TX_BUSY, &dch->Flags); 341 spin_unlock_irqrestore(&hw->lock, flags); 342 #ifdef FIXME 343 if (test_and_clear_bit(FLG_L1_BUSY, &dch->Flags)) 344 dchannel_sched_event(&hc->dch, D_CLEARBUSY); 345 #endif 346 ret = 0; 347 } else 348 ret = l1_event(dch->l1, hh->prim); 349 break; 350 case MPH_INFORMATION_REQ: 351 hfcsusb_ph_info(hw); 352 ret = 0; 353 break; 354 } 355 356 return ret; 357 } 358 359 /* 360 * Layer 1 callback function 361 */ 362 static int 363 hfc_l1callback(struct dchannel *dch, u_int cmd) 364 { 365 struct hfcsusb *hw = dch->hw; 366 367 if (debug & DBG_HFC_CALL_TRACE) 368 printk(KERN_DEBUG "%s: %s cmd 0x%x\n", 369 hw->name, __func__, cmd); 370 371 switch (cmd) { 372 case INFO3_P8: 373 case INFO3_P10: 374 case HW_RESET_REQ: 375 case HW_POWERUP_REQ: 376 break; 377 378 case HW_DEACT_REQ: 379 skb_queue_purge(&dch->squeue); 380 if (dch->tx_skb) { 381 dev_kfree_skb(dch->tx_skb); 382 dch->tx_skb = NULL; 383 } 384 dch->tx_idx = 0; 385 if (dch->rx_skb) { 386 dev_kfree_skb(dch->rx_skb); 387 dch->rx_skb = NULL; 388 } 389 test_and_clear_bit(FLG_TX_BUSY, &dch->Flags); 390 break; 391 case PH_ACTIVATE_IND: 392 test_and_set_bit(FLG_ACTIVE, &dch->Flags); 393 _queue_data(&dch->dev.D, cmd, MISDN_ID_ANY, 0, NULL, 394 GFP_ATOMIC); 395 break; 396 case PH_DEACTIVATE_IND: 397 test_and_clear_bit(FLG_ACTIVE, &dch->Flags); 398 _queue_data(&dch->dev.D, cmd, MISDN_ID_ANY, 0, NULL, 399 GFP_ATOMIC); 400 break; 401 default: 402 if (dch->debug & DEBUG_HW) 403 printk(KERN_DEBUG "%s: %s: unknown cmd %x\n", 404 hw->name, __func__, cmd); 405 return -1; 406 } 407 hfcsusb_ph_info(hw); 408 return 0; 409 } 410 411 static int 412 open_dchannel(struct hfcsusb *hw, struct mISDNchannel *ch, 413 struct channel_req *rq) 414 { 415 int err = 0; 416 417 if (debug & DEBUG_HW_OPEN) 418 printk(KERN_DEBUG "%s: %s: dev(%d) open addr(%i) from %p\n", 419 hw->name, __func__, hw->dch.dev.id, rq->adr.channel, 420 __builtin_return_address(0)); 421 if (rq->protocol == ISDN_P_NONE) 422 return -EINVAL; 423 424 test_and_clear_bit(FLG_ACTIVE, &hw->dch.Flags); 425 test_and_clear_bit(FLG_ACTIVE, &hw->ech.Flags); 426 hfcsusb_start_endpoint(hw, HFC_CHAN_D); 427 428 /* E-Channel logging */ 429 if (rq->adr.channel == 1) { 430 if (hw->fifos[HFCUSB_PCM_RX].pipe) { 431 hfcsusb_start_endpoint(hw, HFC_CHAN_E); 432 set_bit(FLG_ACTIVE, &hw->ech.Flags); 433 _queue_data(&hw->ech.dev.D, PH_ACTIVATE_IND, 434 MISDN_ID_ANY, 0, NULL, GFP_ATOMIC); 435 } else 436 return -EINVAL; 437 } 438 439 if (!hw->initdone) { 440 hw->protocol = rq->protocol; 441 if (rq->protocol == ISDN_P_TE_S0) { 442 err = create_l1(&hw->dch, hfc_l1callback); 443 if (err) 444 return err; 445 } 446 setPortMode(hw); 447 ch->protocol = rq->protocol; 448 hw->initdone = 1; 449 } else { 450 if (rq->protocol != ch->protocol) 451 return -EPROTONOSUPPORT; 452 } 453 454 if (((ch->protocol == ISDN_P_NT_S0) && (hw->dch.state == 3)) || 455 ((ch->protocol == ISDN_P_TE_S0) && (hw->dch.state == 7))) 456 _queue_data(ch, PH_ACTIVATE_IND, MISDN_ID_ANY, 457 0, NULL, GFP_KERNEL); 458 rq->ch = ch; 459 if (!try_module_get(THIS_MODULE)) 460 printk(KERN_WARNING "%s: %s: cannot get module\n", 461 hw->name, __func__); 462 return 0; 463 } 464 465 static int 466 open_bchannel(struct hfcsusb *hw, struct channel_req *rq) 467 { 468 struct bchannel *bch; 469 470 if (rq->adr.channel == 0 || rq->adr.channel > 2) 471 return -EINVAL; 472 if (rq->protocol == ISDN_P_NONE) 473 return -EINVAL; 474 475 if (debug & DBG_HFC_CALL_TRACE) 476 printk(KERN_DEBUG "%s: %s B%i\n", 477 hw->name, __func__, rq->adr.channel); 478 479 bch = &hw->bch[rq->adr.channel - 1]; 480 if (test_and_set_bit(FLG_OPEN, &bch->Flags)) 481 return -EBUSY; /* b-channel can be only open once */ 482 bch->ch.protocol = rq->protocol; 483 rq->ch = &bch->ch; 484 485 if (!try_module_get(THIS_MODULE)) 486 printk(KERN_WARNING "%s: %s:cannot get module\n", 487 hw->name, __func__); 488 return 0; 489 } 490 491 static int 492 channel_ctrl(struct hfcsusb *hw, struct mISDN_ctrl_req *cq) 493 { 494 int ret = 0; 495 496 if (debug & DBG_HFC_CALL_TRACE) 497 printk(KERN_DEBUG "%s: %s op(0x%x) channel(0x%x)\n", 498 hw->name, __func__, (cq->op), (cq->channel)); 499 500 switch (cq->op) { 501 case MISDN_CTRL_GETOP: 502 cq->op = MISDN_CTRL_LOOP | MISDN_CTRL_CONNECT | 503 MISDN_CTRL_DISCONNECT; 504 break; 505 default: 506 printk(KERN_WARNING "%s: %s: unknown Op %x\n", 507 hw->name, __func__, cq->op); 508 ret = -EINVAL; 509 break; 510 } 511 return ret; 512 } 513 514 /* 515 * device control function 516 */ 517 static int 518 hfc_dctrl(struct mISDNchannel *ch, u_int cmd, void *arg) 519 { 520 struct mISDNdevice *dev = container_of(ch, struct mISDNdevice, D); 521 struct dchannel *dch = container_of(dev, struct dchannel, dev); 522 struct hfcsusb *hw = dch->hw; 523 struct channel_req *rq; 524 int err = 0; 525 526 if (dch->debug & DEBUG_HW) 527 printk(KERN_DEBUG "%s: %s: cmd:%x %p\n", 528 hw->name, __func__, cmd, arg); 529 switch (cmd) { 530 case OPEN_CHANNEL: 531 rq = arg; 532 if ((rq->protocol == ISDN_P_TE_S0) || 533 (rq->protocol == ISDN_P_NT_S0)) 534 err = open_dchannel(hw, ch, rq); 535 else 536 err = open_bchannel(hw, rq); 537 if (!err) 538 hw->open++; 539 break; 540 case CLOSE_CHANNEL: 541 hw->open--; 542 if (debug & DEBUG_HW_OPEN) 543 printk(KERN_DEBUG 544 "%s: %s: dev(%d) close from %p (open %d)\n", 545 hw->name, __func__, hw->dch.dev.id, 546 __builtin_return_address(0), hw->open); 547 if (!hw->open) { 548 hfcsusb_stop_endpoint(hw, HFC_CHAN_D); 549 if (hw->fifos[HFCUSB_PCM_RX].pipe) 550 hfcsusb_stop_endpoint(hw, HFC_CHAN_E); 551 handle_led(hw, LED_POWER_ON); 552 } 553 module_put(THIS_MODULE); 554 break; 555 case CONTROL_CHANNEL: 556 err = channel_ctrl(hw, arg); 557 break; 558 default: 559 if (dch->debug & DEBUG_HW) 560 printk(KERN_DEBUG "%s: %s: unknown command %x\n", 561 hw->name, __func__, cmd); 562 return -EINVAL; 563 } 564 return err; 565 } 566 567 /* 568 * S0 TE state change event handler 569 */ 570 static void 571 ph_state_te(struct dchannel *dch) 572 { 573 struct hfcsusb *hw = dch->hw; 574 575 if (debug & DEBUG_HW) { 576 if (dch->state <= HFC_MAX_TE_LAYER1_STATE) 577 printk(KERN_DEBUG "%s: %s: %s\n", hw->name, __func__, 578 HFC_TE_LAYER1_STATES[dch->state]); 579 else 580 printk(KERN_DEBUG "%s: %s: TE F%d\n", 581 hw->name, __func__, dch->state); 582 } 583 584 switch (dch->state) { 585 case 0: 586 l1_event(dch->l1, HW_RESET_IND); 587 break; 588 case 3: 589 l1_event(dch->l1, HW_DEACT_IND); 590 break; 591 case 5: 592 case 8: 593 l1_event(dch->l1, ANYSIGNAL); 594 break; 595 case 6: 596 l1_event(dch->l1, INFO2); 597 break; 598 case 7: 599 l1_event(dch->l1, INFO4_P8); 600 break; 601 } 602 if (dch->state == 7) 603 handle_led(hw, LED_S0_ON); 604 else 605 handle_led(hw, LED_S0_OFF); 606 } 607 608 /* 609 * S0 NT state change event handler 610 */ 611 static void 612 ph_state_nt(struct dchannel *dch) 613 { 614 struct hfcsusb *hw = dch->hw; 615 616 if (debug & DEBUG_HW) { 617 if (dch->state <= HFC_MAX_NT_LAYER1_STATE) 618 printk(KERN_DEBUG "%s: %s: %s\n", 619 hw->name, __func__, 620 HFC_NT_LAYER1_STATES[dch->state]); 621 622 else 623 printk(KERN_INFO DRIVER_NAME "%s: %s: NT G%d\n", 624 hw->name, __func__, dch->state); 625 } 626 627 switch (dch->state) { 628 case (1): 629 test_and_clear_bit(FLG_ACTIVE, &dch->Flags); 630 test_and_clear_bit(FLG_L2_ACTIVATED, &dch->Flags); 631 hw->nt_timer = 0; 632 hw->timers &= ~NT_ACTIVATION_TIMER; 633 handle_led(hw, LED_S0_OFF); 634 break; 635 636 case (2): 637 if (hw->nt_timer < 0) { 638 hw->nt_timer = 0; 639 hw->timers &= ~NT_ACTIVATION_TIMER; 640 hfcsusb_ph_command(dch->hw, HFC_L1_DEACTIVATE_NT); 641 } else { 642 hw->timers |= NT_ACTIVATION_TIMER; 643 hw->nt_timer = NT_T1_COUNT; 644 /* allow G2 -> G3 transition */ 645 write_reg(hw, HFCUSB_STATES, 2 | HFCUSB_NT_G2_G3); 646 } 647 break; 648 case (3): 649 hw->nt_timer = 0; 650 hw->timers &= ~NT_ACTIVATION_TIMER; 651 test_and_set_bit(FLG_ACTIVE, &dch->Flags); 652 _queue_data(&dch->dev.D, PH_ACTIVATE_IND, 653 MISDN_ID_ANY, 0, NULL, GFP_ATOMIC); 654 handle_led(hw, LED_S0_ON); 655 break; 656 case (4): 657 hw->nt_timer = 0; 658 hw->timers &= ~NT_ACTIVATION_TIMER; 659 break; 660 default: 661 break; 662 } 663 hfcsusb_ph_info(hw); 664 } 665 666 static void 667 ph_state(struct dchannel *dch) 668 { 669 struct hfcsusb *hw = dch->hw; 670 671 if (hw->protocol == ISDN_P_NT_S0) 672 ph_state_nt(dch); 673 else if (hw->protocol == ISDN_P_TE_S0) 674 ph_state_te(dch); 675 } 676 677 /* 678 * disable/enable BChannel for desired protocoll 679 */ 680 static int 681 hfcsusb_setup_bch(struct bchannel *bch, int protocol) 682 { 683 struct hfcsusb *hw = bch->hw; 684 __u8 conhdlc, sctrl, sctrl_r; 685 686 if (debug & DEBUG_HW) 687 printk(KERN_DEBUG "%s: %s: protocol %x-->%x B%d\n", 688 hw->name, __func__, bch->state, protocol, 689 bch->nr); 690 691 /* setup val for CON_HDLC */ 692 conhdlc = 0; 693 if (protocol > ISDN_P_NONE) 694 conhdlc = 8; /* enable FIFO */ 695 696 switch (protocol) { 697 case (-1): /* used for init */ 698 bch->state = -1; 699 /* fall through */ 700 case (ISDN_P_NONE): 701 if (bch->state == ISDN_P_NONE) 702 return 0; /* already in idle state */ 703 bch->state = ISDN_P_NONE; 704 clear_bit(FLG_HDLC, &bch->Flags); 705 clear_bit(FLG_TRANSPARENT, &bch->Flags); 706 break; 707 case (ISDN_P_B_RAW): 708 conhdlc |= 2; 709 bch->state = protocol; 710 set_bit(FLG_TRANSPARENT, &bch->Flags); 711 break; 712 case (ISDN_P_B_HDLC): 713 bch->state = protocol; 714 set_bit(FLG_HDLC, &bch->Flags); 715 break; 716 default: 717 if (debug & DEBUG_HW) 718 printk(KERN_DEBUG "%s: %s: prot not known %x\n", 719 hw->name, __func__, protocol); 720 return -ENOPROTOOPT; 721 } 722 723 if (protocol >= ISDN_P_NONE) { 724 write_reg(hw, HFCUSB_FIFO, (bch->nr == 1) ? 0 : 2); 725 write_reg(hw, HFCUSB_CON_HDLC, conhdlc); 726 write_reg(hw, HFCUSB_INC_RES_F, 2); 727 write_reg(hw, HFCUSB_FIFO, (bch->nr == 1) ? 1 : 3); 728 write_reg(hw, HFCUSB_CON_HDLC, conhdlc); 729 write_reg(hw, HFCUSB_INC_RES_F, 2); 730 731 sctrl = 0x40 + ((hw->protocol == ISDN_P_TE_S0) ? 0x00 : 0x04); 732 sctrl_r = 0x0; 733 if (test_bit(FLG_ACTIVE, &hw->bch[0].Flags)) { 734 sctrl |= 1; 735 sctrl_r |= 1; 736 } 737 if (test_bit(FLG_ACTIVE, &hw->bch[1].Flags)) { 738 sctrl |= 2; 739 sctrl_r |= 2; 740 } 741 write_reg(hw, HFCUSB_SCTRL, sctrl); 742 write_reg(hw, HFCUSB_SCTRL_R, sctrl_r); 743 744 if (protocol > ISDN_P_NONE) 745 handle_led(hw, (bch->nr == 1) ? LED_B1_ON : LED_B2_ON); 746 else 747 handle_led(hw, (bch->nr == 1) ? LED_B1_OFF : 748 LED_B2_OFF); 749 } 750 hfcsusb_ph_info(hw); 751 return 0; 752 } 753 754 static void 755 hfcsusb_ph_command(struct hfcsusb *hw, u_char command) 756 { 757 if (debug & DEBUG_HW) 758 printk(KERN_DEBUG "%s: %s: %x\n", 759 hw->name, __func__, command); 760 761 switch (command) { 762 case HFC_L1_ACTIVATE_TE: 763 /* force sending sending INFO1 */ 764 write_reg(hw, HFCUSB_STATES, 0x14); 765 /* start l1 activation */ 766 write_reg(hw, HFCUSB_STATES, 0x04); 767 break; 768 769 case HFC_L1_FORCE_DEACTIVATE_TE: 770 write_reg(hw, HFCUSB_STATES, 0x10); 771 write_reg(hw, HFCUSB_STATES, 0x03); 772 break; 773 774 case HFC_L1_ACTIVATE_NT: 775 if (hw->dch.state == 3) 776 _queue_data(&hw->dch.dev.D, PH_ACTIVATE_IND, 777 MISDN_ID_ANY, 0, NULL, GFP_ATOMIC); 778 else 779 write_reg(hw, HFCUSB_STATES, HFCUSB_ACTIVATE | 780 HFCUSB_DO_ACTION | HFCUSB_NT_G2_G3); 781 break; 782 783 case HFC_L1_DEACTIVATE_NT: 784 write_reg(hw, HFCUSB_STATES, 785 HFCUSB_DO_ACTION); 786 break; 787 } 788 } 789 790 /* 791 * Layer 1 B-channel hardware access 792 */ 793 static int 794 channel_bctrl(struct bchannel *bch, struct mISDN_ctrl_req *cq) 795 { 796 return mISDN_ctrl_bchannel(bch, cq); 797 } 798 799 /* collect data from incoming interrupt or isochron USB data */ 800 static void 801 hfcsusb_rx_frame(struct usb_fifo *fifo, __u8 *data, unsigned int len, 802 int finish) 803 { 804 struct hfcsusb *hw = fifo->hw; 805 struct sk_buff *rx_skb = NULL; 806 int maxlen = 0; 807 int fifon = fifo->fifonum; 808 int i; 809 int hdlc = 0; 810 unsigned long flags; 811 812 if (debug & DBG_HFC_CALL_TRACE) 813 printk(KERN_DEBUG "%s: %s: fifo(%i) len(%i) " 814 "dch(%p) bch(%p) ech(%p)\n", 815 hw->name, __func__, fifon, len, 816 fifo->dch, fifo->bch, fifo->ech); 817 818 if (!len) 819 return; 820 821 if ((!!fifo->dch + !!fifo->bch + !!fifo->ech) != 1) { 822 printk(KERN_DEBUG "%s: %s: undefined channel\n", 823 hw->name, __func__); 824 return; 825 } 826 827 spin_lock_irqsave(&hw->lock, flags); 828 if (fifo->dch) { 829 rx_skb = fifo->dch->rx_skb; 830 maxlen = fifo->dch->maxlen; 831 hdlc = 1; 832 } 833 if (fifo->bch) { 834 if (test_bit(FLG_RX_OFF, &fifo->bch->Flags)) { 835 fifo->bch->dropcnt += len; 836 spin_unlock_irqrestore(&hw->lock, flags); 837 return; 838 } 839 maxlen = bchannel_get_rxbuf(fifo->bch, len); 840 rx_skb = fifo->bch->rx_skb; 841 if (maxlen < 0) { 842 if (rx_skb) 843 skb_trim(rx_skb, 0); 844 pr_warning("%s.B%d: No bufferspace for %d bytes\n", 845 hw->name, fifo->bch->nr, len); 846 spin_unlock_irqrestore(&hw->lock, flags); 847 return; 848 } 849 maxlen = fifo->bch->maxlen; 850 hdlc = test_bit(FLG_HDLC, &fifo->bch->Flags); 851 } 852 if (fifo->ech) { 853 rx_skb = fifo->ech->rx_skb; 854 maxlen = fifo->ech->maxlen; 855 hdlc = 1; 856 } 857 858 if (fifo->dch || fifo->ech) { 859 if (!rx_skb) { 860 rx_skb = mI_alloc_skb(maxlen, GFP_ATOMIC); 861 if (rx_skb) { 862 if (fifo->dch) 863 fifo->dch->rx_skb = rx_skb; 864 if (fifo->ech) 865 fifo->ech->rx_skb = rx_skb; 866 skb_trim(rx_skb, 0); 867 } else { 868 printk(KERN_DEBUG "%s: %s: No mem for rx_skb\n", 869 hw->name, __func__); 870 spin_unlock_irqrestore(&hw->lock, flags); 871 return; 872 } 873 } 874 /* D/E-Channel SKB range check */ 875 if ((rx_skb->len + len) >= MAX_DFRAME_LEN_L1) { 876 printk(KERN_DEBUG "%s: %s: sbk mem exceeded " 877 "for fifo(%d) HFCUSB_D_RX\n", 878 hw->name, __func__, fifon); 879 skb_trim(rx_skb, 0); 880 spin_unlock_irqrestore(&hw->lock, flags); 881 return; 882 } 883 } 884 885 skb_put_data(rx_skb, data, len); 886 887 if (hdlc) { 888 /* we have a complete hdlc packet */ 889 if (finish) { 890 if ((rx_skb->len > 3) && 891 (!(rx_skb->data[rx_skb->len - 1]))) { 892 if (debug & DBG_HFC_FIFO_VERBOSE) { 893 printk(KERN_DEBUG "%s: %s: fifon(%i)" 894 " new RX len(%i): ", 895 hw->name, __func__, fifon, 896 rx_skb->len); 897 i = 0; 898 while (i < rx_skb->len) 899 printk("%02x ", 900 rx_skb->data[i++]); 901 printk("\n"); 902 } 903 904 /* remove CRC & status */ 905 skb_trim(rx_skb, rx_skb->len - 3); 906 907 if (fifo->dch) 908 recv_Dchannel(fifo->dch); 909 if (fifo->bch) 910 recv_Bchannel(fifo->bch, MISDN_ID_ANY, 911 0); 912 if (fifo->ech) 913 recv_Echannel(fifo->ech, 914 &hw->dch); 915 } else { 916 if (debug & DBG_HFC_FIFO_VERBOSE) { 917 printk(KERN_DEBUG 918 "%s: CRC or minlen ERROR fifon(%i) " 919 "RX len(%i): ", 920 hw->name, fifon, rx_skb->len); 921 i = 0; 922 while (i < rx_skb->len) 923 printk("%02x ", 924 rx_skb->data[i++]); 925 printk("\n"); 926 } 927 skb_trim(rx_skb, 0); 928 } 929 } 930 } else { 931 /* deliver transparent data to layer2 */ 932 recv_Bchannel(fifo->bch, MISDN_ID_ANY, false); 933 } 934 spin_unlock_irqrestore(&hw->lock, flags); 935 } 936 937 static void 938 fill_isoc_urb(struct urb *urb, struct usb_device *dev, unsigned int pipe, 939 void *buf, int num_packets, int packet_size, int interval, 940 usb_complete_t complete, void *context) 941 { 942 int k; 943 944 usb_fill_bulk_urb(urb, dev, pipe, buf, packet_size * num_packets, 945 complete, context); 946 947 urb->number_of_packets = num_packets; 948 urb->transfer_flags = URB_ISO_ASAP; 949 urb->actual_length = 0; 950 urb->interval = interval; 951 952 for (k = 0; k < num_packets; k++) { 953 urb->iso_frame_desc[k].offset = packet_size * k; 954 urb->iso_frame_desc[k].length = packet_size; 955 urb->iso_frame_desc[k].actual_length = 0; 956 } 957 } 958 959 /* receive completion routine for all ISO tx fifos */ 960 static void 961 rx_iso_complete(struct urb *urb) 962 { 963 struct iso_urb *context_iso_urb = (struct iso_urb *) urb->context; 964 struct usb_fifo *fifo = context_iso_urb->owner_fifo; 965 struct hfcsusb *hw = fifo->hw; 966 int k, len, errcode, offset, num_isoc_packets, fifon, maxlen, 967 status, iso_status, i; 968 __u8 *buf; 969 static __u8 eof[8]; 970 __u8 s0_state; 971 unsigned long flags; 972 973 fifon = fifo->fifonum; 974 status = urb->status; 975 976 spin_lock_irqsave(&hw->lock, flags); 977 if (fifo->stop_gracefull) { 978 fifo->stop_gracefull = 0; 979 fifo->active = 0; 980 spin_unlock_irqrestore(&hw->lock, flags); 981 return; 982 } 983 spin_unlock_irqrestore(&hw->lock, flags); 984 985 /* 986 * ISO transfer only partially completed, 987 * look at individual frame status for details 988 */ 989 if (status == -EXDEV) { 990 if (debug & DEBUG_HW) 991 printk(KERN_DEBUG "%s: %s: with -EXDEV " 992 "urb->status %d, fifonum %d\n", 993 hw->name, __func__, status, fifon); 994 995 /* clear status, so go on with ISO transfers */ 996 status = 0; 997 } 998 999 s0_state = 0; 1000 if (fifo->active && !status) { 1001 num_isoc_packets = iso_packets[fifon]; 1002 maxlen = fifo->usb_packet_maxlen; 1003 1004 for (k = 0; k < num_isoc_packets; ++k) { 1005 len = urb->iso_frame_desc[k].actual_length; 1006 offset = urb->iso_frame_desc[k].offset; 1007 buf = context_iso_urb->buffer + offset; 1008 iso_status = urb->iso_frame_desc[k].status; 1009 1010 if (iso_status && (debug & DBG_HFC_FIFO_VERBOSE)) { 1011 printk(KERN_DEBUG "%s: %s: " 1012 "ISO packet %i, status: %i\n", 1013 hw->name, __func__, k, iso_status); 1014 } 1015 1016 /* USB data log for every D ISO in */ 1017 if ((fifon == HFCUSB_D_RX) && 1018 (debug & DBG_HFC_USB_VERBOSE)) { 1019 printk(KERN_DEBUG 1020 "%s: %s: %d (%d/%d) len(%d) ", 1021 hw->name, __func__, urb->start_frame, 1022 k, num_isoc_packets - 1, 1023 len); 1024 for (i = 0; i < len; i++) 1025 printk("%x ", buf[i]); 1026 printk("\n"); 1027 } 1028 1029 if (!iso_status) { 1030 if (fifo->last_urblen != maxlen) { 1031 /* 1032 * save fifo fill-level threshold bits 1033 * to use them later in TX ISO URB 1034 * completions 1035 */ 1036 hw->threshold_mask = buf[1]; 1037 1038 if (fifon == HFCUSB_D_RX) 1039 s0_state = (buf[0] >> 4); 1040 1041 eof[fifon] = buf[0] & 1; 1042 if (len > 2) 1043 hfcsusb_rx_frame(fifo, buf + 2, 1044 len - 2, (len < maxlen) 1045 ? eof[fifon] : 0); 1046 } else 1047 hfcsusb_rx_frame(fifo, buf, len, 1048 (len < maxlen) ? 1049 eof[fifon] : 0); 1050 fifo->last_urblen = len; 1051 } 1052 } 1053 1054 /* signal S0 layer1 state change */ 1055 if ((s0_state) && (hw->initdone) && 1056 (s0_state != hw->dch.state)) { 1057 hw->dch.state = s0_state; 1058 schedule_event(&hw->dch, FLG_PHCHANGE); 1059 } 1060 1061 fill_isoc_urb(urb, fifo->hw->dev, fifo->pipe, 1062 context_iso_urb->buffer, num_isoc_packets, 1063 fifo->usb_packet_maxlen, fifo->intervall, 1064 (usb_complete_t)rx_iso_complete, urb->context); 1065 errcode = usb_submit_urb(urb, GFP_ATOMIC); 1066 if (errcode < 0) { 1067 if (debug & DEBUG_HW) 1068 printk(KERN_DEBUG "%s: %s: error submitting " 1069 "ISO URB: %d\n", 1070 hw->name, __func__, errcode); 1071 } 1072 } else { 1073 if (status && (debug & DBG_HFC_URB_INFO)) 1074 printk(KERN_DEBUG "%s: %s: rx_iso_complete : " 1075 "urb->status %d, fifonum %d\n", 1076 hw->name, __func__, status, fifon); 1077 } 1078 } 1079 1080 /* receive completion routine for all interrupt rx fifos */ 1081 static void 1082 rx_int_complete(struct urb *urb) 1083 { 1084 int len, status, i; 1085 __u8 *buf, maxlen, fifon; 1086 struct usb_fifo *fifo = (struct usb_fifo *) urb->context; 1087 struct hfcsusb *hw = fifo->hw; 1088 static __u8 eof[8]; 1089 unsigned long flags; 1090 1091 spin_lock_irqsave(&hw->lock, flags); 1092 if (fifo->stop_gracefull) { 1093 fifo->stop_gracefull = 0; 1094 fifo->active = 0; 1095 spin_unlock_irqrestore(&hw->lock, flags); 1096 return; 1097 } 1098 spin_unlock_irqrestore(&hw->lock, flags); 1099 1100 fifon = fifo->fifonum; 1101 if ((!fifo->active) || (urb->status)) { 1102 if (debug & DBG_HFC_URB_ERROR) 1103 printk(KERN_DEBUG 1104 "%s: %s: RX-Fifo %i is going down (%i)\n", 1105 hw->name, __func__, fifon, urb->status); 1106 1107 fifo->urb->interval = 0; /* cancel automatic rescheduling */ 1108 return; 1109 } 1110 len = urb->actual_length; 1111 buf = fifo->buffer; 1112 maxlen = fifo->usb_packet_maxlen; 1113 1114 /* USB data log for every D INT in */ 1115 if ((fifon == HFCUSB_D_RX) && (debug & DBG_HFC_USB_VERBOSE)) { 1116 printk(KERN_DEBUG "%s: %s: D RX INT len(%d) ", 1117 hw->name, __func__, len); 1118 for (i = 0; i < len; i++) 1119 printk("%02x ", buf[i]); 1120 printk("\n"); 1121 } 1122 1123 if (fifo->last_urblen != fifo->usb_packet_maxlen) { 1124 /* the threshold mask is in the 2nd status byte */ 1125 hw->threshold_mask = buf[1]; 1126 1127 /* signal S0 layer1 state change */ 1128 if (hw->initdone && ((buf[0] >> 4) != hw->dch.state)) { 1129 hw->dch.state = (buf[0] >> 4); 1130 schedule_event(&hw->dch, FLG_PHCHANGE); 1131 } 1132 1133 eof[fifon] = buf[0] & 1; 1134 /* if we have more than the 2 status bytes -> collect data */ 1135 if (len > 2) 1136 hfcsusb_rx_frame(fifo, buf + 2, 1137 urb->actual_length - 2, 1138 (len < maxlen) ? eof[fifon] : 0); 1139 } else { 1140 hfcsusb_rx_frame(fifo, buf, urb->actual_length, 1141 (len < maxlen) ? eof[fifon] : 0); 1142 } 1143 fifo->last_urblen = urb->actual_length; 1144 1145 status = usb_submit_urb(urb, GFP_ATOMIC); 1146 if (status) { 1147 if (debug & DEBUG_HW) 1148 printk(KERN_DEBUG "%s: %s: error resubmitting USB\n", 1149 hw->name, __func__); 1150 } 1151 } 1152 1153 /* transmit completion routine for all ISO tx fifos */ 1154 static void 1155 tx_iso_complete(struct urb *urb) 1156 { 1157 struct iso_urb *context_iso_urb = (struct iso_urb *) urb->context; 1158 struct usb_fifo *fifo = context_iso_urb->owner_fifo; 1159 struct hfcsusb *hw = fifo->hw; 1160 struct sk_buff *tx_skb; 1161 int k, tx_offset, num_isoc_packets, sink, remain, current_len, 1162 errcode, hdlc, i; 1163 int *tx_idx; 1164 int frame_complete, fifon, status, fillempty = 0; 1165 __u8 threshbit, *p; 1166 unsigned long flags; 1167 1168 spin_lock_irqsave(&hw->lock, flags); 1169 if (fifo->stop_gracefull) { 1170 fifo->stop_gracefull = 0; 1171 fifo->active = 0; 1172 spin_unlock_irqrestore(&hw->lock, flags); 1173 return; 1174 } 1175 1176 if (fifo->dch) { 1177 tx_skb = fifo->dch->tx_skb; 1178 tx_idx = &fifo->dch->tx_idx; 1179 hdlc = 1; 1180 } else if (fifo->bch) { 1181 tx_skb = fifo->bch->tx_skb; 1182 tx_idx = &fifo->bch->tx_idx; 1183 hdlc = test_bit(FLG_HDLC, &fifo->bch->Flags); 1184 if (!tx_skb && !hdlc && 1185 test_bit(FLG_FILLEMPTY, &fifo->bch->Flags)) 1186 fillempty = 1; 1187 } else { 1188 printk(KERN_DEBUG "%s: %s: neither BCH nor DCH\n", 1189 hw->name, __func__); 1190 spin_unlock_irqrestore(&hw->lock, flags); 1191 return; 1192 } 1193 1194 fifon = fifo->fifonum; 1195 status = urb->status; 1196 1197 tx_offset = 0; 1198 1199 /* 1200 * ISO transfer only partially completed, 1201 * look at individual frame status for details 1202 */ 1203 if (status == -EXDEV) { 1204 if (debug & DBG_HFC_URB_ERROR) 1205 printk(KERN_DEBUG "%s: %s: " 1206 "-EXDEV (%i) fifon (%d)\n", 1207 hw->name, __func__, status, fifon); 1208 1209 /* clear status, so go on with ISO transfers */ 1210 status = 0; 1211 } 1212 1213 if (fifo->active && !status) { 1214 /* is FifoFull-threshold set for our channel? */ 1215 threshbit = (hw->threshold_mask & (1 << fifon)); 1216 num_isoc_packets = iso_packets[fifon]; 1217 1218 /* predict dataflow to avoid fifo overflow */ 1219 if (fifon >= HFCUSB_D_TX) 1220 sink = (threshbit) ? SINK_DMIN : SINK_DMAX; 1221 else 1222 sink = (threshbit) ? SINK_MIN : SINK_MAX; 1223 fill_isoc_urb(urb, fifo->hw->dev, fifo->pipe, 1224 context_iso_urb->buffer, num_isoc_packets, 1225 fifo->usb_packet_maxlen, fifo->intervall, 1226 (usb_complete_t)tx_iso_complete, urb->context); 1227 memset(context_iso_urb->buffer, 0, 1228 sizeof(context_iso_urb->buffer)); 1229 frame_complete = 0; 1230 1231 for (k = 0; k < num_isoc_packets; ++k) { 1232 /* analyze tx success of previous ISO packets */ 1233 if (debug & DBG_HFC_URB_ERROR) { 1234 errcode = urb->iso_frame_desc[k].status; 1235 if (errcode) { 1236 printk(KERN_DEBUG "%s: %s: " 1237 "ISO packet %i, status: %i\n", 1238 hw->name, __func__, k, errcode); 1239 } 1240 } 1241 1242 /* Generate next ISO Packets */ 1243 if (tx_skb) 1244 remain = tx_skb->len - *tx_idx; 1245 else if (fillempty) 1246 remain = 15; /* > not complete */ 1247 else 1248 remain = 0; 1249 1250 if (remain > 0) { 1251 fifo->bit_line -= sink; 1252 current_len = (0 - fifo->bit_line) / 8; 1253 if (current_len > 14) 1254 current_len = 14; 1255 if (current_len < 0) 1256 current_len = 0; 1257 if (remain < current_len) 1258 current_len = remain; 1259 1260 /* how much bit do we put on the line? */ 1261 fifo->bit_line += current_len * 8; 1262 1263 context_iso_urb->buffer[tx_offset] = 0; 1264 if (current_len == remain) { 1265 if (hdlc) { 1266 /* signal frame completion */ 1267 context_iso_urb-> 1268 buffer[tx_offset] = 1; 1269 /* add 2 byte flags and 16bit 1270 * CRC at end of ISDN frame */ 1271 fifo->bit_line += 32; 1272 } 1273 frame_complete = 1; 1274 } 1275 1276 /* copy tx data to iso-urb buffer */ 1277 p = context_iso_urb->buffer + tx_offset + 1; 1278 if (fillempty) { 1279 memset(p, fifo->bch->fill[0], 1280 current_len); 1281 } else { 1282 memcpy(p, (tx_skb->data + *tx_idx), 1283 current_len); 1284 *tx_idx += current_len; 1285 } 1286 urb->iso_frame_desc[k].offset = tx_offset; 1287 urb->iso_frame_desc[k].length = current_len + 1; 1288 1289 /* USB data log for every D ISO out */ 1290 if ((fifon == HFCUSB_D_RX) && !fillempty && 1291 (debug & DBG_HFC_USB_VERBOSE)) { 1292 printk(KERN_DEBUG 1293 "%s: %s (%d/%d) offs(%d) len(%d) ", 1294 hw->name, __func__, 1295 k, num_isoc_packets - 1, 1296 urb->iso_frame_desc[k].offset, 1297 urb->iso_frame_desc[k].length); 1298 1299 for (i = urb->iso_frame_desc[k].offset; 1300 i < (urb->iso_frame_desc[k].offset 1301 + urb->iso_frame_desc[k].length); 1302 i++) 1303 printk("%x ", 1304 context_iso_urb->buffer[i]); 1305 1306 printk(" skb->len(%i) tx-idx(%d)\n", 1307 tx_skb->len, *tx_idx); 1308 } 1309 1310 tx_offset += (current_len + 1); 1311 } else { 1312 urb->iso_frame_desc[k].offset = tx_offset++; 1313 urb->iso_frame_desc[k].length = 1; 1314 /* we lower data margin every msec */ 1315 fifo->bit_line -= sink; 1316 if (fifo->bit_line < BITLINE_INF) 1317 fifo->bit_line = BITLINE_INF; 1318 } 1319 1320 if (frame_complete) { 1321 frame_complete = 0; 1322 1323 if (debug & DBG_HFC_FIFO_VERBOSE) { 1324 printk(KERN_DEBUG "%s: %s: " 1325 "fifon(%i) new TX len(%i): ", 1326 hw->name, __func__, 1327 fifon, tx_skb->len); 1328 i = 0; 1329 while (i < tx_skb->len) 1330 printk("%02x ", 1331 tx_skb->data[i++]); 1332 printk("\n"); 1333 } 1334 1335 dev_kfree_skb(tx_skb); 1336 tx_skb = NULL; 1337 if (fifo->dch && get_next_dframe(fifo->dch)) 1338 tx_skb = fifo->dch->tx_skb; 1339 else if (fifo->bch && 1340 get_next_bframe(fifo->bch)) 1341 tx_skb = fifo->bch->tx_skb; 1342 } 1343 } 1344 errcode = usb_submit_urb(urb, GFP_ATOMIC); 1345 if (errcode < 0) { 1346 if (debug & DEBUG_HW) 1347 printk(KERN_DEBUG 1348 "%s: %s: error submitting ISO URB: %d \n", 1349 hw->name, __func__, errcode); 1350 } 1351 1352 /* 1353 * abuse DChannel tx iso completion to trigger NT mode state 1354 * changes tx_iso_complete is assumed to be called every 1355 * fifo->intervall (ms) 1356 */ 1357 if ((fifon == HFCUSB_D_TX) && (hw->protocol == ISDN_P_NT_S0) 1358 && (hw->timers & NT_ACTIVATION_TIMER)) { 1359 if ((--hw->nt_timer) < 0) 1360 schedule_event(&hw->dch, FLG_PHCHANGE); 1361 } 1362 1363 } else { 1364 if (status && (debug & DBG_HFC_URB_ERROR)) 1365 printk(KERN_DEBUG "%s: %s: urb->status %s (%i)" 1366 "fifonum=%d\n", 1367 hw->name, __func__, 1368 symbolic(urb_errlist, status), status, fifon); 1369 } 1370 spin_unlock_irqrestore(&hw->lock, flags); 1371 } 1372 1373 /* 1374 * allocs urbs and start isoc transfer with two pending urbs to avoid 1375 * gaps in the transfer chain 1376 */ 1377 static int 1378 start_isoc_chain(struct usb_fifo *fifo, int num_packets_per_urb, 1379 usb_complete_t complete, int packet_size) 1380 { 1381 struct hfcsusb *hw = fifo->hw; 1382 int i, k, errcode; 1383 1384 if (debug) 1385 printk(KERN_DEBUG "%s: %s: fifo %i\n", 1386 hw->name, __func__, fifo->fifonum); 1387 1388 /* allocate Memory for Iso out Urbs */ 1389 for (i = 0; i < 2; i++) { 1390 if (!(fifo->iso[i].urb)) { 1391 fifo->iso[i].urb = 1392 usb_alloc_urb(num_packets_per_urb, GFP_KERNEL); 1393 if (!(fifo->iso[i].urb)) { 1394 printk(KERN_DEBUG 1395 "%s: %s: alloc urb for fifo %i failed", 1396 hw->name, __func__, fifo->fifonum); 1397 } 1398 fifo->iso[i].owner_fifo = (struct usb_fifo *) fifo; 1399 fifo->iso[i].indx = i; 1400 1401 /* Init the first iso */ 1402 if (ISO_BUFFER_SIZE >= 1403 (fifo->usb_packet_maxlen * 1404 num_packets_per_urb)) { 1405 fill_isoc_urb(fifo->iso[i].urb, 1406 fifo->hw->dev, fifo->pipe, 1407 fifo->iso[i].buffer, 1408 num_packets_per_urb, 1409 fifo->usb_packet_maxlen, 1410 fifo->intervall, complete, 1411 &fifo->iso[i]); 1412 memset(fifo->iso[i].buffer, 0, 1413 sizeof(fifo->iso[i].buffer)); 1414 1415 for (k = 0; k < num_packets_per_urb; k++) { 1416 fifo->iso[i].urb-> 1417 iso_frame_desc[k].offset = 1418 k * packet_size; 1419 fifo->iso[i].urb-> 1420 iso_frame_desc[k].length = 1421 packet_size; 1422 } 1423 } else { 1424 printk(KERN_DEBUG 1425 "%s: %s: ISO Buffer size to small!\n", 1426 hw->name, __func__); 1427 } 1428 } 1429 fifo->bit_line = BITLINE_INF; 1430 1431 errcode = usb_submit_urb(fifo->iso[i].urb, GFP_KERNEL); 1432 fifo->active = (errcode >= 0) ? 1 : 0; 1433 fifo->stop_gracefull = 0; 1434 if (errcode < 0) { 1435 printk(KERN_DEBUG "%s: %s: %s URB nr:%d\n", 1436 hw->name, __func__, 1437 symbolic(urb_errlist, errcode), i); 1438 } 1439 } 1440 return fifo->active; 1441 } 1442 1443 static void 1444 stop_iso_gracefull(struct usb_fifo *fifo) 1445 { 1446 struct hfcsusb *hw = fifo->hw; 1447 int i, timeout; 1448 u_long flags; 1449 1450 for (i = 0; i < 2; i++) { 1451 spin_lock_irqsave(&hw->lock, flags); 1452 if (debug) 1453 printk(KERN_DEBUG "%s: %s for fifo %i.%i\n", 1454 hw->name, __func__, fifo->fifonum, i); 1455 fifo->stop_gracefull = 1; 1456 spin_unlock_irqrestore(&hw->lock, flags); 1457 } 1458 1459 for (i = 0; i < 2; i++) { 1460 timeout = 3; 1461 while (fifo->stop_gracefull && timeout--) 1462 schedule_timeout_interruptible((HZ / 1000) * 16); 1463 if (debug && fifo->stop_gracefull) 1464 printk(KERN_DEBUG "%s: ERROR %s for fifo %i.%i\n", 1465 hw->name, __func__, fifo->fifonum, i); 1466 } 1467 } 1468 1469 static void 1470 stop_int_gracefull(struct usb_fifo *fifo) 1471 { 1472 struct hfcsusb *hw = fifo->hw; 1473 int timeout; 1474 u_long flags; 1475 1476 spin_lock_irqsave(&hw->lock, flags); 1477 if (debug) 1478 printk(KERN_DEBUG "%s: %s for fifo %i\n", 1479 hw->name, __func__, fifo->fifonum); 1480 fifo->stop_gracefull = 1; 1481 spin_unlock_irqrestore(&hw->lock, flags); 1482 1483 timeout = 3; 1484 while (fifo->stop_gracefull && timeout--) 1485 schedule_timeout_interruptible((HZ / 1000) * 3); 1486 if (debug && fifo->stop_gracefull) 1487 printk(KERN_DEBUG "%s: ERROR %s for fifo %i\n", 1488 hw->name, __func__, fifo->fifonum); 1489 } 1490 1491 /* start the interrupt transfer for the given fifo */ 1492 static void 1493 start_int_fifo(struct usb_fifo *fifo) 1494 { 1495 struct hfcsusb *hw = fifo->hw; 1496 int errcode; 1497 1498 if (debug) 1499 printk(KERN_DEBUG "%s: %s: INT IN fifo:%d\n", 1500 hw->name, __func__, fifo->fifonum); 1501 1502 if (!fifo->urb) { 1503 fifo->urb = usb_alloc_urb(0, GFP_KERNEL); 1504 if (!fifo->urb) 1505 return; 1506 } 1507 usb_fill_int_urb(fifo->urb, fifo->hw->dev, fifo->pipe, 1508 fifo->buffer, fifo->usb_packet_maxlen, 1509 (usb_complete_t)rx_int_complete, fifo, fifo->intervall); 1510 fifo->active = 1; 1511 fifo->stop_gracefull = 0; 1512 errcode = usb_submit_urb(fifo->urb, GFP_KERNEL); 1513 if (errcode) { 1514 printk(KERN_DEBUG "%s: %s: submit URB: status:%i\n", 1515 hw->name, __func__, errcode); 1516 fifo->active = 0; 1517 } 1518 } 1519 1520 static void 1521 setPortMode(struct hfcsusb *hw) 1522 { 1523 if (debug & DEBUG_HW) 1524 printk(KERN_DEBUG "%s: %s %s\n", hw->name, __func__, 1525 (hw->protocol == ISDN_P_TE_S0) ? "TE" : "NT"); 1526 1527 if (hw->protocol == ISDN_P_TE_S0) { 1528 write_reg(hw, HFCUSB_SCTRL, 0x40); 1529 write_reg(hw, HFCUSB_SCTRL_E, 0x00); 1530 write_reg(hw, HFCUSB_CLKDEL, CLKDEL_TE); 1531 write_reg(hw, HFCUSB_STATES, 3 | 0x10); 1532 write_reg(hw, HFCUSB_STATES, 3); 1533 } else { 1534 write_reg(hw, HFCUSB_SCTRL, 0x44); 1535 write_reg(hw, HFCUSB_SCTRL_E, 0x09); 1536 write_reg(hw, HFCUSB_CLKDEL, CLKDEL_NT); 1537 write_reg(hw, HFCUSB_STATES, 1 | 0x10); 1538 write_reg(hw, HFCUSB_STATES, 1); 1539 } 1540 } 1541 1542 static void 1543 reset_hfcsusb(struct hfcsusb *hw) 1544 { 1545 struct usb_fifo *fifo; 1546 int i; 1547 1548 if (debug & DEBUG_HW) 1549 printk(KERN_DEBUG "%s: %s\n", hw->name, __func__); 1550 1551 /* do Chip reset */ 1552 write_reg(hw, HFCUSB_CIRM, 8); 1553 1554 /* aux = output, reset off */ 1555 write_reg(hw, HFCUSB_CIRM, 0x10); 1556 1557 /* set USB_SIZE to match the wMaxPacketSize for INT or BULK transfers */ 1558 write_reg(hw, HFCUSB_USB_SIZE, (hw->packet_size / 8) | 1559 ((hw->packet_size / 8) << 4)); 1560 1561 /* set USB_SIZE_I to match the the wMaxPacketSize for ISO transfers */ 1562 write_reg(hw, HFCUSB_USB_SIZE_I, hw->iso_packet_size); 1563 1564 /* enable PCM/GCI master mode */ 1565 write_reg(hw, HFCUSB_MST_MODE1, 0); /* set default values */ 1566 write_reg(hw, HFCUSB_MST_MODE0, 1); /* enable master mode */ 1567 1568 /* init the fifos */ 1569 write_reg(hw, HFCUSB_F_THRES, 1570 (HFCUSB_TX_THRESHOLD / 8) | ((HFCUSB_RX_THRESHOLD / 8) << 4)); 1571 1572 fifo = hw->fifos; 1573 for (i = 0; i < HFCUSB_NUM_FIFOS; i++) { 1574 write_reg(hw, HFCUSB_FIFO, i); /* select the desired fifo */ 1575 fifo[i].max_size = 1576 (i <= HFCUSB_B2_RX) ? MAX_BCH_SIZE : MAX_DFRAME_LEN; 1577 fifo[i].last_urblen = 0; 1578 1579 /* set 2 bit for D- & E-channel */ 1580 write_reg(hw, HFCUSB_HDLC_PAR, ((i <= HFCUSB_B2_RX) ? 0 : 2)); 1581 1582 /* enable all fifos */ 1583 if (i == HFCUSB_D_TX) 1584 write_reg(hw, HFCUSB_CON_HDLC, 1585 (hw->protocol == ISDN_P_NT_S0) ? 0x08 : 0x09); 1586 else 1587 write_reg(hw, HFCUSB_CON_HDLC, 0x08); 1588 write_reg(hw, HFCUSB_INC_RES_F, 2); /* reset the fifo */ 1589 } 1590 1591 write_reg(hw, HFCUSB_SCTRL_R, 0); /* disable both B receivers */ 1592 handle_led(hw, LED_POWER_ON); 1593 } 1594 1595 /* start USB data pipes dependand on device's endpoint configuration */ 1596 static void 1597 hfcsusb_start_endpoint(struct hfcsusb *hw, int channel) 1598 { 1599 /* quick check if endpoint already running */ 1600 if ((channel == HFC_CHAN_D) && (hw->fifos[HFCUSB_D_RX].active)) 1601 return; 1602 if ((channel == HFC_CHAN_B1) && (hw->fifos[HFCUSB_B1_RX].active)) 1603 return; 1604 if ((channel == HFC_CHAN_B2) && (hw->fifos[HFCUSB_B2_RX].active)) 1605 return; 1606 if ((channel == HFC_CHAN_E) && (hw->fifos[HFCUSB_PCM_RX].active)) 1607 return; 1608 1609 /* start rx endpoints using USB INT IN method */ 1610 if (hw->cfg_used == CNF_3INT3ISO || hw->cfg_used == CNF_4INT3ISO) 1611 start_int_fifo(hw->fifos + channel * 2 + 1); 1612 1613 /* start rx endpoints using USB ISO IN method */ 1614 if (hw->cfg_used == CNF_3ISO3ISO || hw->cfg_used == CNF_4ISO3ISO) { 1615 switch (channel) { 1616 case HFC_CHAN_D: 1617 start_isoc_chain(hw->fifos + HFCUSB_D_RX, 1618 ISOC_PACKETS_D, 1619 (usb_complete_t)rx_iso_complete, 1620 16); 1621 break; 1622 case HFC_CHAN_E: 1623 start_isoc_chain(hw->fifos + HFCUSB_PCM_RX, 1624 ISOC_PACKETS_D, 1625 (usb_complete_t)rx_iso_complete, 1626 16); 1627 break; 1628 case HFC_CHAN_B1: 1629 start_isoc_chain(hw->fifos + HFCUSB_B1_RX, 1630 ISOC_PACKETS_B, 1631 (usb_complete_t)rx_iso_complete, 1632 16); 1633 break; 1634 case HFC_CHAN_B2: 1635 start_isoc_chain(hw->fifos + HFCUSB_B2_RX, 1636 ISOC_PACKETS_B, 1637 (usb_complete_t)rx_iso_complete, 1638 16); 1639 break; 1640 } 1641 } 1642 1643 /* start tx endpoints using USB ISO OUT method */ 1644 switch (channel) { 1645 case HFC_CHAN_D: 1646 start_isoc_chain(hw->fifos + HFCUSB_D_TX, 1647 ISOC_PACKETS_B, 1648 (usb_complete_t)tx_iso_complete, 1); 1649 break; 1650 case HFC_CHAN_B1: 1651 start_isoc_chain(hw->fifos + HFCUSB_B1_TX, 1652 ISOC_PACKETS_D, 1653 (usb_complete_t)tx_iso_complete, 1); 1654 break; 1655 case HFC_CHAN_B2: 1656 start_isoc_chain(hw->fifos + HFCUSB_B2_TX, 1657 ISOC_PACKETS_B, 1658 (usb_complete_t)tx_iso_complete, 1); 1659 break; 1660 } 1661 } 1662 1663 /* stop USB data pipes dependand on device's endpoint configuration */ 1664 static void 1665 hfcsusb_stop_endpoint(struct hfcsusb *hw, int channel) 1666 { 1667 /* quick check if endpoint currently running */ 1668 if ((channel == HFC_CHAN_D) && (!hw->fifos[HFCUSB_D_RX].active)) 1669 return; 1670 if ((channel == HFC_CHAN_B1) && (!hw->fifos[HFCUSB_B1_RX].active)) 1671 return; 1672 if ((channel == HFC_CHAN_B2) && (!hw->fifos[HFCUSB_B2_RX].active)) 1673 return; 1674 if ((channel == HFC_CHAN_E) && (!hw->fifos[HFCUSB_PCM_RX].active)) 1675 return; 1676 1677 /* rx endpoints using USB INT IN method */ 1678 if (hw->cfg_used == CNF_3INT3ISO || hw->cfg_used == CNF_4INT3ISO) 1679 stop_int_gracefull(hw->fifos + channel * 2 + 1); 1680 1681 /* rx endpoints using USB ISO IN method */ 1682 if (hw->cfg_used == CNF_3ISO3ISO || hw->cfg_used == CNF_4ISO3ISO) 1683 stop_iso_gracefull(hw->fifos + channel * 2 + 1); 1684 1685 /* tx endpoints using USB ISO OUT method */ 1686 if (channel != HFC_CHAN_E) 1687 stop_iso_gracefull(hw->fifos + channel * 2); 1688 } 1689 1690 1691 /* Hardware Initialization */ 1692 static int 1693 setup_hfcsusb(struct hfcsusb *hw) 1694 { 1695 u_char b; 1696 1697 if (debug & DBG_HFC_CALL_TRACE) 1698 printk(KERN_DEBUG "%s: %s\n", hw->name, __func__); 1699 1700 /* check the chip id */ 1701 if (read_reg_atomic(hw, HFCUSB_CHIP_ID, &b) != 1) { 1702 printk(KERN_DEBUG "%s: %s: cannot read chip id\n", 1703 hw->name, __func__); 1704 return 1; 1705 } 1706 if (b != HFCUSB_CHIPID) { 1707 printk(KERN_DEBUG "%s: %s: Invalid chip id 0x%02x\n", 1708 hw->name, __func__, b); 1709 return 1; 1710 } 1711 1712 /* first set the needed config, interface and alternate */ 1713 (void) usb_set_interface(hw->dev, hw->if_used, hw->alt_used); 1714 1715 hw->led_state = 0; 1716 1717 /* init the background machinery for control requests */ 1718 hw->ctrl_read.bRequestType = 0xc0; 1719 hw->ctrl_read.bRequest = 1; 1720 hw->ctrl_read.wLength = cpu_to_le16(1); 1721 hw->ctrl_write.bRequestType = 0x40; 1722 hw->ctrl_write.bRequest = 0; 1723 hw->ctrl_write.wLength = 0; 1724 usb_fill_control_urb(hw->ctrl_urb, hw->dev, hw->ctrl_out_pipe, 1725 (u_char *)&hw->ctrl_write, NULL, 0, 1726 (usb_complete_t)ctrl_complete, hw); 1727 1728 reset_hfcsusb(hw); 1729 return 0; 1730 } 1731 1732 static void 1733 release_hw(struct hfcsusb *hw) 1734 { 1735 if (debug & DBG_HFC_CALL_TRACE) 1736 printk(KERN_DEBUG "%s: %s\n", hw->name, __func__); 1737 1738 /* 1739 * stop all endpoints gracefully 1740 * TODO: mISDN_core should generate CLOSE_CHANNEL 1741 * signals after calling mISDN_unregister_device() 1742 */ 1743 hfcsusb_stop_endpoint(hw, HFC_CHAN_D); 1744 hfcsusb_stop_endpoint(hw, HFC_CHAN_B1); 1745 hfcsusb_stop_endpoint(hw, HFC_CHAN_B2); 1746 if (hw->fifos[HFCUSB_PCM_RX].pipe) 1747 hfcsusb_stop_endpoint(hw, HFC_CHAN_E); 1748 if (hw->protocol == ISDN_P_TE_S0) 1749 l1_event(hw->dch.l1, CLOSE_CHANNEL); 1750 1751 mISDN_unregister_device(&hw->dch.dev); 1752 mISDN_freebchannel(&hw->bch[1]); 1753 mISDN_freebchannel(&hw->bch[0]); 1754 mISDN_freedchannel(&hw->dch); 1755 1756 if (hw->ctrl_urb) { 1757 usb_kill_urb(hw->ctrl_urb); 1758 usb_free_urb(hw->ctrl_urb); 1759 hw->ctrl_urb = NULL; 1760 } 1761 1762 if (hw->intf) 1763 usb_set_intfdata(hw->intf, NULL); 1764 list_del(&hw->list); 1765 kfree(hw); 1766 hw = NULL; 1767 } 1768 1769 static void 1770 deactivate_bchannel(struct bchannel *bch) 1771 { 1772 struct hfcsusb *hw = bch->hw; 1773 u_long flags; 1774 1775 if (bch->debug & DEBUG_HW) 1776 printk(KERN_DEBUG "%s: %s: bch->nr(%i)\n", 1777 hw->name, __func__, bch->nr); 1778 1779 spin_lock_irqsave(&hw->lock, flags); 1780 mISDN_clear_bchannel(bch); 1781 spin_unlock_irqrestore(&hw->lock, flags); 1782 hfcsusb_setup_bch(bch, ISDN_P_NONE); 1783 hfcsusb_stop_endpoint(hw, bch->nr - 1); 1784 } 1785 1786 /* 1787 * Layer 1 B-channel hardware access 1788 */ 1789 static int 1790 hfc_bctrl(struct mISDNchannel *ch, u_int cmd, void *arg) 1791 { 1792 struct bchannel *bch = container_of(ch, struct bchannel, ch); 1793 int ret = -EINVAL; 1794 1795 if (bch->debug & DEBUG_HW) 1796 printk(KERN_DEBUG "%s: cmd:%x %p\n", __func__, cmd, arg); 1797 1798 switch (cmd) { 1799 case HW_TESTRX_RAW: 1800 case HW_TESTRX_HDLC: 1801 case HW_TESTRX_OFF: 1802 ret = -EINVAL; 1803 break; 1804 1805 case CLOSE_CHANNEL: 1806 test_and_clear_bit(FLG_OPEN, &bch->Flags); 1807 deactivate_bchannel(bch); 1808 ch->protocol = ISDN_P_NONE; 1809 ch->peer = NULL; 1810 module_put(THIS_MODULE); 1811 ret = 0; 1812 break; 1813 case CONTROL_CHANNEL: 1814 ret = channel_bctrl(bch, arg); 1815 break; 1816 default: 1817 printk(KERN_WARNING "%s: unknown prim(%x)\n", 1818 __func__, cmd); 1819 } 1820 return ret; 1821 } 1822 1823 static int 1824 setup_instance(struct hfcsusb *hw, struct device *parent) 1825 { 1826 u_long flags; 1827 int err, i; 1828 1829 if (debug & DBG_HFC_CALL_TRACE) 1830 printk(KERN_DEBUG "%s: %s\n", hw->name, __func__); 1831 1832 spin_lock_init(&hw->ctrl_lock); 1833 spin_lock_init(&hw->lock); 1834 1835 mISDN_initdchannel(&hw->dch, MAX_DFRAME_LEN_L1, ph_state); 1836 hw->dch.debug = debug & 0xFFFF; 1837 hw->dch.hw = hw; 1838 hw->dch.dev.Dprotocols = (1 << ISDN_P_TE_S0) | (1 << ISDN_P_NT_S0); 1839 hw->dch.dev.D.send = hfcusb_l2l1D; 1840 hw->dch.dev.D.ctrl = hfc_dctrl; 1841 1842 /* enable E-Channel logging */ 1843 if (hw->fifos[HFCUSB_PCM_RX].pipe) 1844 mISDN_initdchannel(&hw->ech, MAX_DFRAME_LEN_L1, NULL); 1845 1846 hw->dch.dev.Bprotocols = (1 << (ISDN_P_B_RAW & ISDN_P_B_MASK)) | 1847 (1 << (ISDN_P_B_HDLC & ISDN_P_B_MASK)); 1848 hw->dch.dev.nrbchan = 2; 1849 for (i = 0; i < 2; i++) { 1850 hw->bch[i].nr = i + 1; 1851 set_channelmap(i + 1, hw->dch.dev.channelmap); 1852 hw->bch[i].debug = debug; 1853 mISDN_initbchannel(&hw->bch[i], MAX_DATA_MEM, poll >> 1); 1854 hw->bch[i].hw = hw; 1855 hw->bch[i].ch.send = hfcusb_l2l1B; 1856 hw->bch[i].ch.ctrl = hfc_bctrl; 1857 hw->bch[i].ch.nr = i + 1; 1858 list_add(&hw->bch[i].ch.list, &hw->dch.dev.bchannels); 1859 } 1860 1861 hw->fifos[HFCUSB_B1_TX].bch = &hw->bch[0]; 1862 hw->fifos[HFCUSB_B1_RX].bch = &hw->bch[0]; 1863 hw->fifos[HFCUSB_B2_TX].bch = &hw->bch[1]; 1864 hw->fifos[HFCUSB_B2_RX].bch = &hw->bch[1]; 1865 hw->fifos[HFCUSB_D_TX].dch = &hw->dch; 1866 hw->fifos[HFCUSB_D_RX].dch = &hw->dch; 1867 hw->fifos[HFCUSB_PCM_RX].ech = &hw->ech; 1868 hw->fifos[HFCUSB_PCM_TX].ech = &hw->ech; 1869 1870 err = setup_hfcsusb(hw); 1871 if (err) 1872 goto out; 1873 1874 snprintf(hw->name, MISDN_MAX_IDLEN - 1, "%s.%d", DRIVER_NAME, 1875 hfcsusb_cnt + 1); 1876 printk(KERN_INFO "%s: registered as '%s'\n", 1877 DRIVER_NAME, hw->name); 1878 1879 err = mISDN_register_device(&hw->dch.dev, parent, hw->name); 1880 if (err) 1881 goto out; 1882 1883 hfcsusb_cnt++; 1884 write_lock_irqsave(&HFClock, flags); 1885 list_add_tail(&hw->list, &HFClist); 1886 write_unlock_irqrestore(&HFClock, flags); 1887 return 0; 1888 1889 out: 1890 mISDN_freebchannel(&hw->bch[1]); 1891 mISDN_freebchannel(&hw->bch[0]); 1892 mISDN_freedchannel(&hw->dch); 1893 kfree(hw); 1894 return err; 1895 } 1896 1897 static int 1898 hfcsusb_probe(struct usb_interface *intf, const struct usb_device_id *id) 1899 { 1900 struct hfcsusb *hw; 1901 struct usb_device *dev = interface_to_usbdev(intf); 1902 struct usb_host_interface *iface = intf->cur_altsetting; 1903 struct usb_host_interface *iface_used = NULL; 1904 struct usb_host_endpoint *ep; 1905 struct hfcsusb_vdata *driver_info; 1906 int ifnum = iface->desc.bInterfaceNumber, i, idx, alt_idx, 1907 probe_alt_setting, vend_idx, cfg_used, *vcf, attr, cfg_found, 1908 ep_addr, cmptbl[16], small_match, iso_packet_size, packet_size, 1909 alt_used = 0; 1910 1911 vend_idx = 0xffff; 1912 for (i = 0; hfcsusb_idtab[i].idVendor; i++) { 1913 if ((le16_to_cpu(dev->descriptor.idVendor) 1914 == hfcsusb_idtab[i].idVendor) && 1915 (le16_to_cpu(dev->descriptor.idProduct) 1916 == hfcsusb_idtab[i].idProduct)) { 1917 vend_idx = i; 1918 continue; 1919 } 1920 } 1921 1922 printk(KERN_DEBUG 1923 "%s: interface(%d) actalt(%d) minor(%d) vend_idx(%d)\n", 1924 __func__, ifnum, iface->desc.bAlternateSetting, 1925 intf->minor, vend_idx); 1926 1927 if (vend_idx == 0xffff) { 1928 printk(KERN_WARNING 1929 "%s: no valid vendor found in USB descriptor\n", 1930 __func__); 1931 return -EIO; 1932 } 1933 /* if vendor and product ID is OK, start probing alternate settings */ 1934 alt_idx = 0; 1935 small_match = -1; 1936 1937 /* default settings */ 1938 iso_packet_size = 16; 1939 packet_size = 64; 1940 1941 while (alt_idx < intf->num_altsetting) { 1942 iface = intf->altsetting + alt_idx; 1943 probe_alt_setting = iface->desc.bAlternateSetting; 1944 cfg_used = 0; 1945 1946 while (validconf[cfg_used][0]) { 1947 cfg_found = 1; 1948 vcf = validconf[cfg_used]; 1949 ep = iface->endpoint; 1950 memcpy(cmptbl, vcf, 16 * sizeof(int)); 1951 1952 /* check for all endpoints in this alternate setting */ 1953 for (i = 0; i < iface->desc.bNumEndpoints; i++) { 1954 ep_addr = ep->desc.bEndpointAddress; 1955 1956 /* get endpoint base */ 1957 idx = ((ep_addr & 0x7f) - 1) * 2; 1958 if (ep_addr & 0x80) 1959 idx++; 1960 attr = ep->desc.bmAttributes; 1961 1962 if (cmptbl[idx] != EP_NOP) { 1963 if (cmptbl[idx] == EP_NUL) 1964 cfg_found = 0; 1965 if (attr == USB_ENDPOINT_XFER_INT 1966 && cmptbl[idx] == EP_INT) 1967 cmptbl[idx] = EP_NUL; 1968 if (attr == USB_ENDPOINT_XFER_BULK 1969 && cmptbl[idx] == EP_BLK) 1970 cmptbl[idx] = EP_NUL; 1971 if (attr == USB_ENDPOINT_XFER_ISOC 1972 && cmptbl[idx] == EP_ISO) 1973 cmptbl[idx] = EP_NUL; 1974 1975 if (attr == USB_ENDPOINT_XFER_INT && 1976 ep->desc.bInterval < vcf[17]) { 1977 cfg_found = 0; 1978 } 1979 } 1980 ep++; 1981 } 1982 1983 for (i = 0; i < 16; i++) 1984 if (cmptbl[i] != EP_NOP && cmptbl[i] != EP_NUL) 1985 cfg_found = 0; 1986 1987 if (cfg_found) { 1988 if (small_match < cfg_used) { 1989 small_match = cfg_used; 1990 alt_used = probe_alt_setting; 1991 iface_used = iface; 1992 } 1993 } 1994 cfg_used++; 1995 } 1996 alt_idx++; 1997 } /* (alt_idx < intf->num_altsetting) */ 1998 1999 /* not found a valid USB Ta Endpoint config */ 2000 if (small_match == -1) 2001 return -EIO; 2002 2003 iface = iface_used; 2004 hw = kzalloc(sizeof(struct hfcsusb), GFP_KERNEL); 2005 if (!hw) 2006 return -ENOMEM; /* got no mem */ 2007 snprintf(hw->name, MISDN_MAX_IDLEN - 1, "%s", DRIVER_NAME); 2008 2009 ep = iface->endpoint; 2010 vcf = validconf[small_match]; 2011 2012 for (i = 0; i < iface->desc.bNumEndpoints; i++) { 2013 struct usb_fifo *f; 2014 2015 ep_addr = ep->desc.bEndpointAddress; 2016 /* get endpoint base */ 2017 idx = ((ep_addr & 0x7f) - 1) * 2; 2018 if (ep_addr & 0x80) 2019 idx++; 2020 f = &hw->fifos[idx & 7]; 2021 2022 /* init Endpoints */ 2023 if (vcf[idx] == EP_NOP || vcf[idx] == EP_NUL) { 2024 ep++; 2025 continue; 2026 } 2027 switch (ep->desc.bmAttributes) { 2028 case USB_ENDPOINT_XFER_INT: 2029 f->pipe = usb_rcvintpipe(dev, 2030 ep->desc.bEndpointAddress); 2031 f->usb_transfer_mode = USB_INT; 2032 packet_size = le16_to_cpu(ep->desc.wMaxPacketSize); 2033 break; 2034 case USB_ENDPOINT_XFER_BULK: 2035 if (ep_addr & 0x80) 2036 f->pipe = usb_rcvbulkpipe(dev, 2037 ep->desc.bEndpointAddress); 2038 else 2039 f->pipe = usb_sndbulkpipe(dev, 2040 ep->desc.bEndpointAddress); 2041 f->usb_transfer_mode = USB_BULK; 2042 packet_size = le16_to_cpu(ep->desc.wMaxPacketSize); 2043 break; 2044 case USB_ENDPOINT_XFER_ISOC: 2045 if (ep_addr & 0x80) 2046 f->pipe = usb_rcvisocpipe(dev, 2047 ep->desc.bEndpointAddress); 2048 else 2049 f->pipe = usb_sndisocpipe(dev, 2050 ep->desc.bEndpointAddress); 2051 f->usb_transfer_mode = USB_ISOC; 2052 iso_packet_size = le16_to_cpu(ep->desc.wMaxPacketSize); 2053 break; 2054 default: 2055 f->pipe = 0; 2056 } 2057 2058 if (f->pipe) { 2059 f->fifonum = idx & 7; 2060 f->hw = hw; 2061 f->usb_packet_maxlen = 2062 le16_to_cpu(ep->desc.wMaxPacketSize); 2063 f->intervall = ep->desc.bInterval; 2064 } 2065 ep++; 2066 } 2067 hw->dev = dev; /* save device */ 2068 hw->if_used = ifnum; /* save used interface */ 2069 hw->alt_used = alt_used; /* and alternate config */ 2070 hw->ctrl_paksize = dev->descriptor.bMaxPacketSize0; /* control size */ 2071 hw->cfg_used = vcf[16]; /* store used config */ 2072 hw->vend_idx = vend_idx; /* store found vendor */ 2073 hw->packet_size = packet_size; 2074 hw->iso_packet_size = iso_packet_size; 2075 2076 /* create the control pipes needed for register access */ 2077 hw->ctrl_in_pipe = usb_rcvctrlpipe(hw->dev, 0); 2078 hw->ctrl_out_pipe = usb_sndctrlpipe(hw->dev, 0); 2079 2080 driver_info = (struct hfcsusb_vdata *) 2081 hfcsusb_idtab[vend_idx].driver_info; 2082 2083 hw->ctrl_urb = usb_alloc_urb(0, GFP_KERNEL); 2084 if (!hw->ctrl_urb) { 2085 pr_warn("%s: No memory for control urb\n", 2086 driver_info->vend_name); 2087 kfree(hw); 2088 return -ENOMEM; 2089 } 2090 2091 pr_info("%s: %s: detected \"%s\" (%s, if=%d alt=%d)\n", 2092 hw->name, __func__, driver_info->vend_name, 2093 conf_str[small_match], ifnum, alt_used); 2094 2095 if (setup_instance(hw, dev->dev.parent)) 2096 return -EIO; 2097 2098 hw->intf = intf; 2099 usb_set_intfdata(hw->intf, hw); 2100 return 0; 2101 } 2102 2103 /* function called when an active device is removed */ 2104 static void 2105 hfcsusb_disconnect(struct usb_interface *intf) 2106 { 2107 struct hfcsusb *hw = usb_get_intfdata(intf); 2108 struct hfcsusb *next; 2109 int cnt = 0; 2110 2111 printk(KERN_INFO "%s: device disconnected\n", hw->name); 2112 2113 handle_led(hw, LED_POWER_OFF); 2114 release_hw(hw); 2115 2116 list_for_each_entry_safe(hw, next, &HFClist, list) 2117 cnt++; 2118 if (!cnt) 2119 hfcsusb_cnt = 0; 2120 2121 usb_set_intfdata(intf, NULL); 2122 } 2123 2124 static struct usb_driver hfcsusb_drv = { 2125 .name = DRIVER_NAME, 2126 .id_table = hfcsusb_idtab, 2127 .probe = hfcsusb_probe, 2128 .disconnect = hfcsusb_disconnect, 2129 .disable_hub_initiated_lpm = 1, 2130 }; 2131 2132 module_usb_driver(hfcsusb_drv); 2133