2 * mISDN driver for Colognechip HFC-S USB chip
4 * Copyright 2001 by Peter Sprenger (sprenger@moving-bytes.de)
5 * Copyright 2008 by Martin Bachem (info@bachem-it.com)
7 * This program is free software; you can redistribute it and/or modify
8 * it under the terms of the GNU General Public License as published by
9 * the Free Software Foundation; either version 2, or (at your option)
12 * This program is distributed in the hope that it will be useful,
13 * but WITHOUT ANY WARRANTY; without even the implied warranty of
14 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
15 * GNU General Public License for more details.
17 * You should have received a copy of the GNU General Public License
18 * along with this program; if not, write to the Free Software
19 * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
23 * debug=<n>, default=0, with n=0xHHHHGGGG
24 * H - l1 driver flags described in hfcsusb.h
25 * G - common mISDN debug flags described at mISDNhw.h
27 * poll=<n>, default 128
28 * n : burst size of PH_DATA_IND at transparent rx data
30 * Revision: 0.3.3 (socket), 2008-11-05
33 #include <linux/module.h>
34 #include <linux/delay.h>
35 #include <linux/usb.h>
36 #include <linux/mISDNhw.h>
37 #include <linux/slab.h>
40 static unsigned int debug;
41 static int poll = DEFAULT_TRANSP_BURST_SZ;
43 static LIST_HEAD(HFClist);
44 static DEFINE_RWLOCK(HFClock);
47 MODULE_AUTHOR("Martin Bachem");
48 MODULE_LICENSE("GPL");
49 module_param(debug, uint, S_IRUGO | S_IWUSR);
50 module_param(poll, int, 0);
52 static int hfcsusb_cnt;
54 /* some function prototypes */
55 static void hfcsusb_ph_command(struct hfcsusb *hw, u_char command);
56 static void release_hw(struct hfcsusb *hw);
57 static void reset_hfcsusb(struct hfcsusb *hw);
58 static void setPortMode(struct hfcsusb *hw);
59 static void hfcsusb_start_endpoint(struct hfcsusb *hw, int channel);
60 static void hfcsusb_stop_endpoint(struct hfcsusb *hw, int channel);
61 static int hfcsusb_setup_bch(struct bchannel *bch, int protocol);
62 static void deactivate_bchannel(struct bchannel *bch);
63 static void hfcsusb_ph_info(struct hfcsusb *hw);
65 /* start next background transfer for control channel */
67 ctrl_start_transfer(struct hfcsusb *hw)
69 if (debug & DBG_HFC_CALL_TRACE)
70 printk(KERN_DEBUG "%s: %s\n", hw->name, __func__);
73 hw->ctrl_urb->pipe = hw->ctrl_out_pipe;
74 hw->ctrl_urb->setup_packet = (u_char *)&hw->ctrl_write;
75 hw->ctrl_urb->transfer_buffer = NULL;
76 hw->ctrl_urb->transfer_buffer_length = 0;
77 hw->ctrl_write.wIndex =
78 cpu_to_le16(hw->ctrl_buff[hw->ctrl_out_idx].hfcs_reg);
79 hw->ctrl_write.wValue =
80 cpu_to_le16(hw->ctrl_buff[hw->ctrl_out_idx].reg_val);
82 usb_submit_urb(hw->ctrl_urb, GFP_ATOMIC);
87 * queue a control transfer request to write HFC-S USB
88 * chip register using CTRL resuest queue
90 static int write_reg(struct hfcsusb *hw, __u8 reg, __u8 val)
94 if (debug & DBG_HFC_CALL_TRACE)
95 printk(KERN_DEBUG "%s: %s reg(0x%02x) val(0x%02x)\n",
96 hw->name, __func__, reg, val);
98 spin_lock(&hw->ctrl_lock);
99 if (hw->ctrl_cnt >= HFC_CTRL_BUFSIZE) {
100 spin_unlock(&hw->ctrl_lock);
103 buf = &hw->ctrl_buff[hw->ctrl_in_idx];
106 if (++hw->ctrl_in_idx >= HFC_CTRL_BUFSIZE)
108 if (++hw->ctrl_cnt == 1)
109 ctrl_start_transfer(hw);
110 spin_unlock(&hw->ctrl_lock);
115 /* control completion routine handling background control cmds */
117 ctrl_complete(struct urb *urb)
119 struct hfcsusb *hw = (struct hfcsusb *) urb->context;
121 if (debug & DBG_HFC_CALL_TRACE)
122 printk(KERN_DEBUG "%s: %s\n", hw->name, __func__);
126 hw->ctrl_cnt--; /* decrement actual count */
127 if (++hw->ctrl_out_idx >= HFC_CTRL_BUFSIZE)
128 hw->ctrl_out_idx = 0; /* pointer wrap */
130 ctrl_start_transfer(hw); /* start next transfer */
134 /* handle LED bits */
136 set_led_bit(struct hfcsusb *hw, signed short led_bits, int set_on)
140 hw->led_state &= ~abs(led_bits);
142 hw->led_state |= led_bits;
145 hw->led_state |= abs(led_bits);
147 hw->led_state &= ~led_bits;
151 /* handle LED requests */
153 handle_led(struct hfcsusb *hw, int event)
155 struct hfcsusb_vdata *driver_info = (struct hfcsusb_vdata *)
156 hfcsusb_idtab[hw->vend_idx].driver_info;
159 if (driver_info->led_scheme == LED_OFF)
161 tmpled = hw->led_state;
165 set_led_bit(hw, driver_info->led_bits[0], 1);
166 set_led_bit(hw, driver_info->led_bits[1], 0);
167 set_led_bit(hw, driver_info->led_bits[2], 0);
168 set_led_bit(hw, driver_info->led_bits[3], 0);
171 set_led_bit(hw, driver_info->led_bits[0], 0);
172 set_led_bit(hw, driver_info->led_bits[1], 0);
173 set_led_bit(hw, driver_info->led_bits[2], 0);
174 set_led_bit(hw, driver_info->led_bits[3], 0);
177 set_led_bit(hw, driver_info->led_bits[1], 1);
180 set_led_bit(hw, driver_info->led_bits[1], 0);
183 set_led_bit(hw, driver_info->led_bits[2], 1);
186 set_led_bit(hw, driver_info->led_bits[2], 0);
189 set_led_bit(hw, driver_info->led_bits[3], 1);
192 set_led_bit(hw, driver_info->led_bits[3], 0);
196 if (hw->led_state != tmpled) {
197 if (debug & DBG_HFC_CALL_TRACE)
198 printk(KERN_DEBUG "%s: %s reg(0x%02x) val(x%02x)\n",
200 HFCUSB_P_DATA, hw->led_state);
202 write_reg(hw, HFCUSB_P_DATA, hw->led_state);
207 * Layer2 -> Layer 1 Bchannel data
210 hfcusb_l2l1B(struct mISDNchannel *ch, struct sk_buff *skb)
212 struct bchannel *bch = container_of(ch, struct bchannel, ch);
213 struct hfcsusb *hw = bch->hw;
215 struct mISDNhead *hh = mISDN_HEAD_P(skb);
218 if (debug & DBG_HFC_CALL_TRACE)
219 printk(KERN_DEBUG "%s: %s\n", hw->name, __func__);
223 spin_lock_irqsave(&hw->lock, flags);
224 ret = bchannel_senddata(bch, skb);
225 spin_unlock_irqrestore(&hw->lock, flags);
226 if (debug & DBG_HFC_CALL_TRACE)
227 printk(KERN_DEBUG "%s: %s PH_DATA_REQ ret(%i)\n",
228 hw->name, __func__, ret);
232 case PH_ACTIVATE_REQ:
233 if (!test_and_set_bit(FLG_ACTIVE, &bch->Flags)) {
234 hfcsusb_start_endpoint(hw, bch->nr - 1);
235 ret = hfcsusb_setup_bch(bch, ch->protocol);
239 _queue_data(ch, PH_ACTIVATE_IND, MISDN_ID_ANY,
240 0, NULL, GFP_KERNEL);
242 case PH_DEACTIVATE_REQ:
243 deactivate_bchannel(bch);
244 _queue_data(ch, PH_DEACTIVATE_IND, MISDN_ID_ANY,
245 0, NULL, GFP_KERNEL);
255 * send full D/B channel status information
256 * as MPH_INFORMATION_IND
259 hfcsusb_ph_info(struct hfcsusb *hw)
262 struct dchannel *dch = &hw->dch;
265 phi = kzalloc(sizeof(struct ph_info) +
266 dch->dev.nrbchan * sizeof(struct ph_info_ch), GFP_ATOMIC);
267 phi->dch.ch.protocol = hw->protocol;
268 phi->dch.ch.Flags = dch->Flags;
269 phi->dch.state = dch->state;
270 phi->dch.num_bch = dch->dev.nrbchan;
271 for (i = 0; i < dch->dev.nrbchan; i++) {
272 phi->bch[i].protocol = hw->bch[i].ch.protocol;
273 phi->bch[i].Flags = hw->bch[i].Flags;
275 _queue_data(&dch->dev.D, MPH_INFORMATION_IND, MISDN_ID_ANY,
276 sizeof(struct ph_info_dch) + dch->dev.nrbchan *
277 sizeof(struct ph_info_ch), phi, GFP_ATOMIC);
282 * Layer2 -> Layer 1 Dchannel data
285 hfcusb_l2l1D(struct mISDNchannel *ch, struct sk_buff *skb)
287 struct mISDNdevice *dev = container_of(ch, struct mISDNdevice, D);
288 struct dchannel *dch = container_of(dev, struct dchannel, dev);
289 struct mISDNhead *hh = mISDN_HEAD_P(skb);
290 struct hfcsusb *hw = dch->hw;
296 if (debug & DBG_HFC_CALL_TRACE)
297 printk(KERN_DEBUG "%s: %s: PH_DATA_REQ\n",
300 spin_lock_irqsave(&hw->lock, flags);
301 ret = dchannel_senddata(dch, skb);
302 spin_unlock_irqrestore(&hw->lock, flags);
305 queue_ch_frame(ch, PH_DATA_CNF, hh->id, NULL);
309 case PH_ACTIVATE_REQ:
310 if (debug & DBG_HFC_CALL_TRACE)
311 printk(KERN_DEBUG "%s: %s: PH_ACTIVATE_REQ %s\n",
313 (hw->protocol == ISDN_P_NT_S0) ? "NT" : "TE");
315 if (hw->protocol == ISDN_P_NT_S0) {
317 if (test_bit(FLG_ACTIVE, &dch->Flags)) {
318 _queue_data(&dch->dev.D,
319 PH_ACTIVATE_IND, MISDN_ID_ANY, 0,
322 hfcsusb_ph_command(hw,
324 test_and_set_bit(FLG_L2_ACTIVATED,
328 hfcsusb_ph_command(hw, HFC_L1_ACTIVATE_TE);
329 ret = l1_event(dch->l1, hh->prim);
333 case PH_DEACTIVATE_REQ:
334 if (debug & DBG_HFC_CALL_TRACE)
335 printk(KERN_DEBUG "%s: %s: PH_DEACTIVATE_REQ\n",
337 test_and_clear_bit(FLG_L2_ACTIVATED, &dch->Flags);
339 if (hw->protocol == ISDN_P_NT_S0) {
340 struct sk_buff_head free_queue;
342 __skb_queue_head_init(&free_queue);
343 hfcsusb_ph_command(hw, HFC_L1_DEACTIVATE_NT);
344 spin_lock_irqsave(&hw->lock, flags);
345 skb_queue_splice_init(&dch->squeue, &free_queue);
347 __skb_queue_tail(&free_queue, dch->tx_skb);
352 __skb_queue_tail(&free_queue, dch->rx_skb);
355 test_and_clear_bit(FLG_TX_BUSY, &dch->Flags);
356 spin_unlock_irqrestore(&hw->lock, flags);
357 __skb_queue_purge(&free_queue);
359 if (test_and_clear_bit(FLG_L1_BUSY, &dch->Flags))
360 dchannel_sched_event(&hc->dch, D_CLEARBUSY);
364 ret = l1_event(dch->l1, hh->prim);
366 case MPH_INFORMATION_REQ:
376 * Layer 1 callback function
379 hfc_l1callback(struct dchannel *dch, u_int cmd)
381 struct hfcsusb *hw = dch->hw;
383 if (debug & DBG_HFC_CALL_TRACE)
384 printk(KERN_DEBUG "%s: %s cmd 0x%x\n",
385 hw->name, __func__, cmd);
395 skb_queue_purge(&dch->squeue);
397 dev_kfree_skb(dch->tx_skb);
402 dev_kfree_skb(dch->rx_skb);
405 test_and_clear_bit(FLG_TX_BUSY, &dch->Flags);
407 case PH_ACTIVATE_IND:
408 test_and_set_bit(FLG_ACTIVE, &dch->Flags);
409 _queue_data(&dch->dev.D, cmd, MISDN_ID_ANY, 0, NULL,
412 case PH_DEACTIVATE_IND:
413 test_and_clear_bit(FLG_ACTIVE, &dch->Flags);
414 _queue_data(&dch->dev.D, cmd, MISDN_ID_ANY, 0, NULL,
418 if (dch->debug & DEBUG_HW)
419 printk(KERN_DEBUG "%s: %s: unknown cmd %x\n",
420 hw->name, __func__, cmd);
428 open_dchannel(struct hfcsusb *hw, struct mISDNchannel *ch,
429 struct channel_req *rq)
433 if (debug & DEBUG_HW_OPEN)
434 printk(KERN_DEBUG "%s: %s: dev(%d) open addr(%i) from %p\n",
435 hw->name, __func__, hw->dch.dev.id, rq->adr.channel,
436 __builtin_return_address(0));
437 if (rq->protocol == ISDN_P_NONE)
440 test_and_clear_bit(FLG_ACTIVE, &hw->dch.Flags);
441 test_and_clear_bit(FLG_ACTIVE, &hw->ech.Flags);
442 hfcsusb_start_endpoint(hw, HFC_CHAN_D);
444 /* E-Channel logging */
445 if (rq->adr.channel == 1) {
446 if (hw->fifos[HFCUSB_PCM_RX].pipe) {
447 hfcsusb_start_endpoint(hw, HFC_CHAN_E);
448 set_bit(FLG_ACTIVE, &hw->ech.Flags);
449 _queue_data(&hw->ech.dev.D, PH_ACTIVATE_IND,
450 MISDN_ID_ANY, 0, NULL, GFP_ATOMIC);
456 hw->protocol = rq->protocol;
457 if (rq->protocol == ISDN_P_TE_S0) {
458 err = create_l1(&hw->dch, hfc_l1callback);
463 ch->protocol = rq->protocol;
466 if (rq->protocol != ch->protocol)
467 return -EPROTONOSUPPORT;
470 if (((ch->protocol == ISDN_P_NT_S0) && (hw->dch.state == 3)) ||
471 ((ch->protocol == ISDN_P_TE_S0) && (hw->dch.state == 7)))
472 _queue_data(ch, PH_ACTIVATE_IND, MISDN_ID_ANY,
473 0, NULL, GFP_KERNEL);
475 if (!try_module_get(THIS_MODULE))
476 printk(KERN_WARNING "%s: %s: cannot get module\n",
482 open_bchannel(struct hfcsusb *hw, struct channel_req *rq)
484 struct bchannel *bch;
486 if (rq->adr.channel == 0 || rq->adr.channel > 2)
488 if (rq->protocol == ISDN_P_NONE)
491 if (debug & DBG_HFC_CALL_TRACE)
492 printk(KERN_DEBUG "%s: %s B%i\n",
493 hw->name, __func__, rq->adr.channel);
495 bch = &hw->bch[rq->adr.channel - 1];
496 if (test_and_set_bit(FLG_OPEN, &bch->Flags))
497 return -EBUSY; /* b-channel can be only open once */
498 bch->ch.protocol = rq->protocol;
501 if (!try_module_get(THIS_MODULE))
502 printk(KERN_WARNING "%s: %s:cannot get module\n",
508 channel_ctrl(struct hfcsusb *hw, struct mISDN_ctrl_req *cq)
512 if (debug & DBG_HFC_CALL_TRACE)
513 printk(KERN_DEBUG "%s: %s op(0x%x) channel(0x%x)\n",
514 hw->name, __func__, (cq->op), (cq->channel));
517 case MISDN_CTRL_GETOP:
518 cq->op = MISDN_CTRL_LOOP | MISDN_CTRL_CONNECT |
519 MISDN_CTRL_DISCONNECT;
522 printk(KERN_WARNING "%s: %s: unknown Op %x\n",
523 hw->name, __func__, cq->op);
531 * device control function
534 hfc_dctrl(struct mISDNchannel *ch, u_int cmd, void *arg)
536 struct mISDNdevice *dev = container_of(ch, struct mISDNdevice, D);
537 struct dchannel *dch = container_of(dev, struct dchannel, dev);
538 struct hfcsusb *hw = dch->hw;
539 struct channel_req *rq;
542 if (dch->debug & DEBUG_HW)
543 printk(KERN_DEBUG "%s: %s: cmd:%x %p\n",
544 hw->name, __func__, cmd, arg);
548 if ((rq->protocol == ISDN_P_TE_S0) ||
549 (rq->protocol == ISDN_P_NT_S0))
550 err = open_dchannel(hw, ch, rq);
552 err = open_bchannel(hw, rq);
558 if (debug & DEBUG_HW_OPEN)
560 "%s: %s: dev(%d) close from %p (open %d)\n",
561 hw->name, __func__, hw->dch.dev.id,
562 __builtin_return_address(0), hw->open);
564 hfcsusb_stop_endpoint(hw, HFC_CHAN_D);
565 if (hw->fifos[HFCUSB_PCM_RX].pipe)
566 hfcsusb_stop_endpoint(hw, HFC_CHAN_E);
567 handle_led(hw, LED_POWER_ON);
569 module_put(THIS_MODULE);
571 case CONTROL_CHANNEL:
572 err = channel_ctrl(hw, arg);
575 if (dch->debug & DEBUG_HW)
576 printk(KERN_DEBUG "%s: %s: unknown command %x\n",
577 hw->name, __func__, cmd);
584 * S0 TE state change event handler
587 ph_state_te(struct dchannel *dch)
589 struct hfcsusb *hw = dch->hw;
591 if (debug & DEBUG_HW) {
592 if (dch->state <= HFC_MAX_TE_LAYER1_STATE)
593 printk(KERN_DEBUG "%s: %s: %s\n", hw->name, __func__,
594 HFC_TE_LAYER1_STATES[dch->state]);
596 printk(KERN_DEBUG "%s: %s: TE F%d\n",
597 hw->name, __func__, dch->state);
600 switch (dch->state) {
602 l1_event(dch->l1, HW_RESET_IND);
605 l1_event(dch->l1, HW_DEACT_IND);
609 l1_event(dch->l1, ANYSIGNAL);
612 l1_event(dch->l1, INFO2);
615 l1_event(dch->l1, INFO4_P8);
619 handle_led(hw, LED_S0_ON);
621 handle_led(hw, LED_S0_OFF);
625 * S0 NT state change event handler
628 ph_state_nt(struct dchannel *dch)
630 struct hfcsusb *hw = dch->hw;
632 if (debug & DEBUG_HW) {
633 if (dch->state <= HFC_MAX_NT_LAYER1_STATE)
634 printk(KERN_DEBUG "%s: %s: %s\n",
636 HFC_NT_LAYER1_STATES[dch->state]);
639 printk(KERN_INFO DRIVER_NAME "%s: %s: NT G%d\n",
640 hw->name, __func__, dch->state);
643 switch (dch->state) {
645 test_and_clear_bit(FLG_ACTIVE, &dch->Flags);
646 test_and_clear_bit(FLG_L2_ACTIVATED, &dch->Flags);
648 hw->timers &= ~NT_ACTIVATION_TIMER;
649 handle_led(hw, LED_S0_OFF);
653 if (hw->nt_timer < 0) {
655 hw->timers &= ~NT_ACTIVATION_TIMER;
656 hfcsusb_ph_command(dch->hw, HFC_L1_DEACTIVATE_NT);
658 hw->timers |= NT_ACTIVATION_TIMER;
659 hw->nt_timer = NT_T1_COUNT;
660 /* allow G2 -> G3 transition */
661 write_reg(hw, HFCUSB_STATES, 2 | HFCUSB_NT_G2_G3);
666 hw->timers &= ~NT_ACTIVATION_TIMER;
667 test_and_set_bit(FLG_ACTIVE, &dch->Flags);
668 _queue_data(&dch->dev.D, PH_ACTIVATE_IND,
669 MISDN_ID_ANY, 0, NULL, GFP_ATOMIC);
670 handle_led(hw, LED_S0_ON);
674 hw->timers &= ~NT_ACTIVATION_TIMER;
683 ph_state(struct dchannel *dch)
685 struct hfcsusb *hw = dch->hw;
687 if (hw->protocol == ISDN_P_NT_S0)
689 else if (hw->protocol == ISDN_P_TE_S0)
694 * disable/enable BChannel for desired protocoll
697 hfcsusb_setup_bch(struct bchannel *bch, int protocol)
699 struct hfcsusb *hw = bch->hw;
700 __u8 conhdlc, sctrl, sctrl_r;
702 if (debug & DEBUG_HW)
703 printk(KERN_DEBUG "%s: %s: protocol %x-->%x B%d\n",
704 hw->name, __func__, bch->state, protocol,
707 /* setup val for CON_HDLC */
709 if (protocol > ISDN_P_NONE)
710 conhdlc = 8; /* enable FIFO */
713 case (-1): /* used for init */
717 if (bch->state == ISDN_P_NONE)
718 return 0; /* already in idle state */
719 bch->state = ISDN_P_NONE;
720 clear_bit(FLG_HDLC, &bch->Flags);
721 clear_bit(FLG_TRANSPARENT, &bch->Flags);
725 bch->state = protocol;
726 set_bit(FLG_TRANSPARENT, &bch->Flags);
728 case (ISDN_P_B_HDLC):
729 bch->state = protocol;
730 set_bit(FLG_HDLC, &bch->Flags);
733 if (debug & DEBUG_HW)
734 printk(KERN_DEBUG "%s: %s: prot not known %x\n",
735 hw->name, __func__, protocol);
739 if (protocol >= ISDN_P_NONE) {
740 write_reg(hw, HFCUSB_FIFO, (bch->nr == 1) ? 0 : 2);
741 write_reg(hw, HFCUSB_CON_HDLC, conhdlc);
742 write_reg(hw, HFCUSB_INC_RES_F, 2);
743 write_reg(hw, HFCUSB_FIFO, (bch->nr == 1) ? 1 : 3);
744 write_reg(hw, HFCUSB_CON_HDLC, conhdlc);
745 write_reg(hw, HFCUSB_INC_RES_F, 2);
747 sctrl = 0x40 + ((hw->protocol == ISDN_P_TE_S0) ? 0x00 : 0x04);
749 if (test_bit(FLG_ACTIVE, &hw->bch[0].Flags)) {
753 if (test_bit(FLG_ACTIVE, &hw->bch[1].Flags)) {
757 write_reg(hw, HFCUSB_SCTRL, sctrl);
758 write_reg(hw, HFCUSB_SCTRL_R, sctrl_r);
760 if (protocol > ISDN_P_NONE)
761 handle_led(hw, (bch->nr == 1) ? LED_B1_ON : LED_B2_ON);
763 handle_led(hw, (bch->nr == 1) ? LED_B1_OFF :
771 hfcsusb_ph_command(struct hfcsusb *hw, u_char command)
773 if (debug & DEBUG_HW)
774 printk(KERN_DEBUG "%s: %s: %x\n",
775 hw->name, __func__, command);
778 case HFC_L1_ACTIVATE_TE:
779 /* force sending sending INFO1 */
780 write_reg(hw, HFCUSB_STATES, 0x14);
781 /* start l1 activation */
782 write_reg(hw, HFCUSB_STATES, 0x04);
785 case HFC_L1_FORCE_DEACTIVATE_TE:
786 write_reg(hw, HFCUSB_STATES, 0x10);
787 write_reg(hw, HFCUSB_STATES, 0x03);
790 case HFC_L1_ACTIVATE_NT:
791 if (hw->dch.state == 3)
792 _queue_data(&hw->dch.dev.D, PH_ACTIVATE_IND,
793 MISDN_ID_ANY, 0, NULL, GFP_ATOMIC);
795 write_reg(hw, HFCUSB_STATES, HFCUSB_ACTIVATE |
796 HFCUSB_DO_ACTION | HFCUSB_NT_G2_G3);
799 case HFC_L1_DEACTIVATE_NT:
800 write_reg(hw, HFCUSB_STATES,
807 * Layer 1 B-channel hardware access
810 channel_bctrl(struct bchannel *bch, struct mISDN_ctrl_req *cq)
812 return mISDN_ctrl_bchannel(bch, cq);
815 /* collect data from incoming interrupt or isochron USB data */
817 hfcsusb_rx_frame(struct usb_fifo *fifo, __u8 *data, unsigned int len,
820 struct hfcsusb *hw = fifo->hw;
821 struct sk_buff *rx_skb = NULL;
823 int fifon = fifo->fifonum;
828 if (debug & DBG_HFC_CALL_TRACE)
829 printk(KERN_DEBUG "%s: %s: fifo(%i) len(%i) "
830 "dch(%p) bch(%p) ech(%p)\n",
831 hw->name, __func__, fifon, len,
832 fifo->dch, fifo->bch, fifo->ech);
837 if ((!!fifo->dch + !!fifo->bch + !!fifo->ech) != 1) {
838 printk(KERN_DEBUG "%s: %s: undefined channel\n",
843 spin_lock_irqsave(&hw->lock, flags);
845 rx_skb = fifo->dch->rx_skb;
846 maxlen = fifo->dch->maxlen;
850 if (test_bit(FLG_RX_OFF, &fifo->bch->Flags)) {
851 fifo->bch->dropcnt += len;
852 spin_unlock_irqrestore(&hw->lock, flags);
855 maxlen = bchannel_get_rxbuf(fifo->bch, len);
856 rx_skb = fifo->bch->rx_skb;
860 pr_warning("%s.B%d: No bufferspace for %d bytes\n",
861 hw->name, fifo->bch->nr, len);
862 spin_unlock_irqrestore(&hw->lock, flags);
865 maxlen = fifo->bch->maxlen;
866 hdlc = test_bit(FLG_HDLC, &fifo->bch->Flags);
869 rx_skb = fifo->ech->rx_skb;
870 maxlen = fifo->ech->maxlen;
874 if (fifo->dch || fifo->ech) {
876 rx_skb = mI_alloc_skb(maxlen, GFP_ATOMIC);
879 fifo->dch->rx_skb = rx_skb;
881 fifo->ech->rx_skb = rx_skb;
884 printk(KERN_DEBUG "%s: %s: No mem for rx_skb\n",
886 spin_unlock_irqrestore(&hw->lock, flags);
890 /* D/E-Channel SKB range check */
891 if ((rx_skb->len + len) >= MAX_DFRAME_LEN_L1) {
892 printk(KERN_DEBUG "%s: %s: sbk mem exceeded "
893 "for fifo(%d) HFCUSB_D_RX\n",
894 hw->name, __func__, fifon);
896 spin_unlock_irqrestore(&hw->lock, flags);
901 skb_put_data(rx_skb, data, len);
904 /* we have a complete hdlc packet */
906 if ((rx_skb->len > 3) &&
907 (!(rx_skb->data[rx_skb->len - 1]))) {
908 if (debug & DBG_HFC_FIFO_VERBOSE) {
909 printk(KERN_DEBUG "%s: %s: fifon(%i)"
911 hw->name, __func__, fifon,
914 while (i < rx_skb->len)
920 /* remove CRC & status */
921 skb_trim(rx_skb, rx_skb->len - 3);
924 recv_Dchannel(fifo->dch);
926 recv_Bchannel(fifo->bch, MISDN_ID_ANY,
929 recv_Echannel(fifo->ech,
932 if (debug & DBG_HFC_FIFO_VERBOSE) {
934 "%s: CRC or minlen ERROR fifon(%i) "
936 hw->name, fifon, rx_skb->len);
938 while (i < rx_skb->len)
947 /* deliver transparent data to layer2 */
948 recv_Bchannel(fifo->bch, MISDN_ID_ANY, false);
950 spin_unlock_irqrestore(&hw->lock, flags);
954 fill_isoc_urb(struct urb *urb, struct usb_device *dev, unsigned int pipe,
955 void *buf, int num_packets, int packet_size, int interval,
956 usb_complete_t complete, void *context)
960 usb_fill_bulk_urb(urb, dev, pipe, buf, packet_size * num_packets,
963 urb->number_of_packets = num_packets;
964 urb->transfer_flags = URB_ISO_ASAP;
965 urb->actual_length = 0;
966 urb->interval = interval;
968 for (k = 0; k < num_packets; k++) {
969 urb->iso_frame_desc[k].offset = packet_size * k;
970 urb->iso_frame_desc[k].length = packet_size;
971 urb->iso_frame_desc[k].actual_length = 0;
975 /* receive completion routine for all ISO tx fifos */
977 rx_iso_complete(struct urb *urb)
979 struct iso_urb *context_iso_urb = (struct iso_urb *) urb->context;
980 struct usb_fifo *fifo = context_iso_urb->owner_fifo;
981 struct hfcsusb *hw = fifo->hw;
982 int k, len, errcode, offset, num_isoc_packets, fifon, maxlen,
983 status, iso_status, i;
989 fifon = fifo->fifonum;
990 status = urb->status;
992 spin_lock_irqsave(&hw->lock, flags);
993 if (fifo->stop_gracefull) {
994 fifo->stop_gracefull = 0;
996 spin_unlock_irqrestore(&hw->lock, flags);
999 spin_unlock_irqrestore(&hw->lock, flags);
1002 * ISO transfer only partially completed,
1003 * look at individual frame status for details
1005 if (status == -EXDEV) {
1006 if (debug & DEBUG_HW)
1007 printk(KERN_DEBUG "%s: %s: with -EXDEV "
1008 "urb->status %d, fifonum %d\n",
1009 hw->name, __func__, status, fifon);
1011 /* clear status, so go on with ISO transfers */
1016 if (fifo->active && !status) {
1017 num_isoc_packets = iso_packets[fifon];
1018 maxlen = fifo->usb_packet_maxlen;
1020 for (k = 0; k < num_isoc_packets; ++k) {
1021 len = urb->iso_frame_desc[k].actual_length;
1022 offset = urb->iso_frame_desc[k].offset;
1023 buf = context_iso_urb->buffer + offset;
1024 iso_status = urb->iso_frame_desc[k].status;
1026 if (iso_status && (debug & DBG_HFC_FIFO_VERBOSE)) {
1027 printk(KERN_DEBUG "%s: %s: "
1028 "ISO packet %i, status: %i\n",
1029 hw->name, __func__, k, iso_status);
1032 /* USB data log for every D ISO in */
1033 if ((fifon == HFCUSB_D_RX) &&
1034 (debug & DBG_HFC_USB_VERBOSE)) {
1036 "%s: %s: %d (%d/%d) len(%d) ",
1037 hw->name, __func__, urb->start_frame,
1038 k, num_isoc_packets - 1,
1040 for (i = 0; i < len; i++)
1041 printk("%x ", buf[i]);
1046 if (fifo->last_urblen != maxlen) {
1048 * save fifo fill-level threshold bits
1049 * to use them later in TX ISO URB
1052 hw->threshold_mask = buf[1];
1054 if (fifon == HFCUSB_D_RX)
1055 s0_state = (buf[0] >> 4);
1057 eof[fifon] = buf[0] & 1;
1059 hfcsusb_rx_frame(fifo, buf + 2,
1060 len - 2, (len < maxlen)
1063 hfcsusb_rx_frame(fifo, buf, len,
1066 fifo->last_urblen = len;
1070 /* signal S0 layer1 state change */
1071 if ((s0_state) && (hw->initdone) &&
1072 (s0_state != hw->dch.state)) {
1073 hw->dch.state = s0_state;
1074 schedule_event(&hw->dch, FLG_PHCHANGE);
1077 fill_isoc_urb(urb, fifo->hw->dev, fifo->pipe,
1078 context_iso_urb->buffer, num_isoc_packets,
1079 fifo->usb_packet_maxlen, fifo->intervall,
1080 (usb_complete_t)rx_iso_complete, urb->context);
1081 errcode = usb_submit_urb(urb, GFP_ATOMIC);
1083 if (debug & DEBUG_HW)
1084 printk(KERN_DEBUG "%s: %s: error submitting "
1086 hw->name, __func__, errcode);
1089 if (status && (debug & DBG_HFC_URB_INFO))
1090 printk(KERN_DEBUG "%s: %s: rx_iso_complete : "
1091 "urb->status %d, fifonum %d\n",
1092 hw->name, __func__, status, fifon);
1096 /* receive completion routine for all interrupt rx fifos */
1098 rx_int_complete(struct urb *urb)
1101 __u8 *buf, maxlen, fifon;
1102 struct usb_fifo *fifo = (struct usb_fifo *) urb->context;
1103 struct hfcsusb *hw = fifo->hw;
1105 unsigned long flags;
1107 spin_lock_irqsave(&hw->lock, flags);
1108 if (fifo->stop_gracefull) {
1109 fifo->stop_gracefull = 0;
1111 spin_unlock_irqrestore(&hw->lock, flags);
1114 spin_unlock_irqrestore(&hw->lock, flags);
1116 fifon = fifo->fifonum;
1117 if ((!fifo->active) || (urb->status)) {
1118 if (debug & DBG_HFC_URB_ERROR)
1120 "%s: %s: RX-Fifo %i is going down (%i)\n",
1121 hw->name, __func__, fifon, urb->status);
1123 fifo->urb->interval = 0; /* cancel automatic rescheduling */
1126 len = urb->actual_length;
1128 maxlen = fifo->usb_packet_maxlen;
1130 /* USB data log for every D INT in */
1131 if ((fifon == HFCUSB_D_RX) && (debug & DBG_HFC_USB_VERBOSE)) {
1132 printk(KERN_DEBUG "%s: %s: D RX INT len(%d) ",
1133 hw->name, __func__, len);
1134 for (i = 0; i < len; i++)
1135 printk("%02x ", buf[i]);
1139 if (fifo->last_urblen != fifo->usb_packet_maxlen) {
1140 /* the threshold mask is in the 2nd status byte */
1141 hw->threshold_mask = buf[1];
1143 /* signal S0 layer1 state change */
1144 if (hw->initdone && ((buf[0] >> 4) != hw->dch.state)) {
1145 hw->dch.state = (buf[0] >> 4);
1146 schedule_event(&hw->dch, FLG_PHCHANGE);
1149 eof[fifon] = buf[0] & 1;
1150 /* if we have more than the 2 status bytes -> collect data */
1152 hfcsusb_rx_frame(fifo, buf + 2,
1153 urb->actual_length - 2,
1154 (len < maxlen) ? eof[fifon] : 0);
1156 hfcsusb_rx_frame(fifo, buf, urb->actual_length,
1157 (len < maxlen) ? eof[fifon] : 0);
1159 fifo->last_urblen = urb->actual_length;
1161 status = usb_submit_urb(urb, GFP_ATOMIC);
1163 if (debug & DEBUG_HW)
1164 printk(KERN_DEBUG "%s: %s: error resubmitting USB\n",
1165 hw->name, __func__);
1169 /* transmit completion routine for all ISO tx fifos */
1171 tx_iso_complete(struct urb *urb)
1173 struct iso_urb *context_iso_urb = (struct iso_urb *) urb->context;
1174 struct usb_fifo *fifo = context_iso_urb->owner_fifo;
1175 struct hfcsusb *hw = fifo->hw;
1176 struct sk_buff *tx_skb;
1177 int k, tx_offset, num_isoc_packets, sink, remain, current_len,
1180 int frame_complete, fifon, status, fillempty = 0;
1182 unsigned long flags;
1184 spin_lock_irqsave(&hw->lock, flags);
1185 if (fifo->stop_gracefull) {
1186 fifo->stop_gracefull = 0;
1188 spin_unlock_irqrestore(&hw->lock, flags);
1193 tx_skb = fifo->dch->tx_skb;
1194 tx_idx = &fifo->dch->tx_idx;
1196 } else if (fifo->bch) {
1197 tx_skb = fifo->bch->tx_skb;
1198 tx_idx = &fifo->bch->tx_idx;
1199 hdlc = test_bit(FLG_HDLC, &fifo->bch->Flags);
1200 if (!tx_skb && !hdlc &&
1201 test_bit(FLG_FILLEMPTY, &fifo->bch->Flags))
1204 printk(KERN_DEBUG "%s: %s: neither BCH nor DCH\n",
1205 hw->name, __func__);
1206 spin_unlock_irqrestore(&hw->lock, flags);
1210 fifon = fifo->fifonum;
1211 status = urb->status;
1216 * ISO transfer only partially completed,
1217 * look at individual frame status for details
1219 if (status == -EXDEV) {
1220 if (debug & DBG_HFC_URB_ERROR)
1221 printk(KERN_DEBUG "%s: %s: "
1222 "-EXDEV (%i) fifon (%d)\n",
1223 hw->name, __func__, status, fifon);
1225 /* clear status, so go on with ISO transfers */
1229 if (fifo->active && !status) {
1230 /* is FifoFull-threshold set for our channel? */
1231 threshbit = (hw->threshold_mask & (1 << fifon));
1232 num_isoc_packets = iso_packets[fifon];
1234 /* predict dataflow to avoid fifo overflow */
1235 if (fifon >= HFCUSB_D_TX)
1236 sink = (threshbit) ? SINK_DMIN : SINK_DMAX;
1238 sink = (threshbit) ? SINK_MIN : SINK_MAX;
1239 fill_isoc_urb(urb, fifo->hw->dev, fifo->pipe,
1240 context_iso_urb->buffer, num_isoc_packets,
1241 fifo->usb_packet_maxlen, fifo->intervall,
1242 (usb_complete_t)tx_iso_complete, urb->context);
1243 memset(context_iso_urb->buffer, 0,
1244 sizeof(context_iso_urb->buffer));
1247 for (k = 0; k < num_isoc_packets; ++k) {
1248 /* analyze tx success of previous ISO packets */
1249 if (debug & DBG_HFC_URB_ERROR) {
1250 errcode = urb->iso_frame_desc[k].status;
1252 printk(KERN_DEBUG "%s: %s: "
1253 "ISO packet %i, status: %i\n",
1254 hw->name, __func__, k, errcode);
1258 /* Generate next ISO Packets */
1260 remain = tx_skb->len - *tx_idx;
1262 remain = 15; /* > not complete */
1267 fifo->bit_line -= sink;
1268 current_len = (0 - fifo->bit_line) / 8;
1269 if (current_len > 14)
1271 if (current_len < 0)
1273 if (remain < current_len)
1274 current_len = remain;
1276 /* how much bit do we put on the line? */
1277 fifo->bit_line += current_len * 8;
1279 context_iso_urb->buffer[tx_offset] = 0;
1280 if (current_len == remain) {
1282 /* signal frame completion */
1284 buffer[tx_offset] = 1;
1285 /* add 2 byte flags and 16bit
1286 * CRC at end of ISDN frame */
1287 fifo->bit_line += 32;
1292 /* copy tx data to iso-urb buffer */
1293 p = context_iso_urb->buffer + tx_offset + 1;
1295 memset(p, fifo->bch->fill[0],
1298 memcpy(p, (tx_skb->data + *tx_idx),
1300 *tx_idx += current_len;
1302 urb->iso_frame_desc[k].offset = tx_offset;
1303 urb->iso_frame_desc[k].length = current_len + 1;
1305 /* USB data log for every D ISO out */
1306 if ((fifon == HFCUSB_D_RX) && !fillempty &&
1307 (debug & DBG_HFC_USB_VERBOSE)) {
1309 "%s: %s (%d/%d) offs(%d) len(%d) ",
1311 k, num_isoc_packets - 1,
1312 urb->iso_frame_desc[k].offset,
1313 urb->iso_frame_desc[k].length);
1315 for (i = urb->iso_frame_desc[k].offset;
1316 i < (urb->iso_frame_desc[k].offset
1317 + urb->iso_frame_desc[k].length);
1320 context_iso_urb->buffer[i]);
1322 printk(" skb->len(%i) tx-idx(%d)\n",
1323 tx_skb->len, *tx_idx);
1326 tx_offset += (current_len + 1);
1328 urb->iso_frame_desc[k].offset = tx_offset++;
1329 urb->iso_frame_desc[k].length = 1;
1330 /* we lower data margin every msec */
1331 fifo->bit_line -= sink;
1332 if (fifo->bit_line < BITLINE_INF)
1333 fifo->bit_line = BITLINE_INF;
1336 if (frame_complete) {
1339 if (debug & DBG_HFC_FIFO_VERBOSE) {
1340 printk(KERN_DEBUG "%s: %s: "
1341 "fifon(%i) new TX len(%i): ",
1343 fifon, tx_skb->len);
1345 while (i < tx_skb->len)
1351 dev_consume_skb_irq(tx_skb);
1353 if (fifo->dch && get_next_dframe(fifo->dch))
1354 tx_skb = fifo->dch->tx_skb;
1355 else if (fifo->bch &&
1356 get_next_bframe(fifo->bch))
1357 tx_skb = fifo->bch->tx_skb;
1360 errcode = usb_submit_urb(urb, GFP_ATOMIC);
1362 if (debug & DEBUG_HW)
1364 "%s: %s: error submitting ISO URB: %d \n",
1365 hw->name, __func__, errcode);
1369 * abuse DChannel tx iso completion to trigger NT mode state
1370 * changes tx_iso_complete is assumed to be called every
1371 * fifo->intervall (ms)
1373 if ((fifon == HFCUSB_D_TX) && (hw->protocol == ISDN_P_NT_S0)
1374 && (hw->timers & NT_ACTIVATION_TIMER)) {
1375 if ((--hw->nt_timer) < 0)
1376 schedule_event(&hw->dch, FLG_PHCHANGE);
1380 if (status && (debug & DBG_HFC_URB_ERROR))
1381 printk(KERN_DEBUG "%s: %s: urb->status %s (%i)"
1384 symbolic(urb_errlist, status), status, fifon);
1386 spin_unlock_irqrestore(&hw->lock, flags);
1390 * allocs urbs and start isoc transfer with two pending urbs to avoid
1391 * gaps in the transfer chain
1394 start_isoc_chain(struct usb_fifo *fifo, int num_packets_per_urb,
1395 usb_complete_t complete, int packet_size)
1397 struct hfcsusb *hw = fifo->hw;
1401 printk(KERN_DEBUG "%s: %s: fifo %i\n",
1402 hw->name, __func__, fifo->fifonum);
1404 /* allocate Memory for Iso out Urbs */
1405 for (i = 0; i < 2; i++) {
1406 if (!(fifo->iso[i].urb)) {
1408 usb_alloc_urb(num_packets_per_urb, GFP_KERNEL);
1409 if (!(fifo->iso[i].urb)) {
1411 "%s: %s: alloc urb for fifo %i failed",
1412 hw->name, __func__, fifo->fifonum);
1415 fifo->iso[i].owner_fifo = (struct usb_fifo *) fifo;
1416 fifo->iso[i].indx = i;
1418 /* Init the first iso */
1419 if (ISO_BUFFER_SIZE >=
1420 (fifo->usb_packet_maxlen *
1421 num_packets_per_urb)) {
1422 fill_isoc_urb(fifo->iso[i].urb,
1423 fifo->hw->dev, fifo->pipe,
1424 fifo->iso[i].buffer,
1425 num_packets_per_urb,
1426 fifo->usb_packet_maxlen,
1427 fifo->intervall, complete,
1429 memset(fifo->iso[i].buffer, 0,
1430 sizeof(fifo->iso[i].buffer));
1432 for (k = 0; k < num_packets_per_urb; k++) {
1434 iso_frame_desc[k].offset =
1437 iso_frame_desc[k].length =
1442 "%s: %s: ISO Buffer size to small!\n",
1443 hw->name, __func__);
1446 fifo->bit_line = BITLINE_INF;
1448 errcode = usb_submit_urb(fifo->iso[i].urb, GFP_KERNEL);
1449 fifo->active = (errcode >= 0) ? 1 : 0;
1450 fifo->stop_gracefull = 0;
1452 printk(KERN_DEBUG "%s: %s: %s URB nr:%d\n",
1454 symbolic(urb_errlist, errcode), i);
1457 return fifo->active;
1461 stop_iso_gracefull(struct usb_fifo *fifo)
1463 struct hfcsusb *hw = fifo->hw;
1467 for (i = 0; i < 2; i++) {
1468 spin_lock_irqsave(&hw->lock, flags);
1470 printk(KERN_DEBUG "%s: %s for fifo %i.%i\n",
1471 hw->name, __func__, fifo->fifonum, i);
1472 fifo->stop_gracefull = 1;
1473 spin_unlock_irqrestore(&hw->lock, flags);
1476 for (i = 0; i < 2; i++) {
1478 while (fifo->stop_gracefull && timeout--)
1479 schedule_timeout_interruptible((HZ / 1000) * 16);
1480 if (debug && fifo->stop_gracefull)
1481 printk(KERN_DEBUG "%s: ERROR %s for fifo %i.%i\n",
1482 hw->name, __func__, fifo->fifonum, i);
1487 stop_int_gracefull(struct usb_fifo *fifo)
1489 struct hfcsusb *hw = fifo->hw;
1493 spin_lock_irqsave(&hw->lock, flags);
1495 printk(KERN_DEBUG "%s: %s for fifo %i\n",
1496 hw->name, __func__, fifo->fifonum);
1497 fifo->stop_gracefull = 1;
1498 spin_unlock_irqrestore(&hw->lock, flags);
1501 while (fifo->stop_gracefull && timeout--)
1502 schedule_timeout_interruptible((HZ / 1000) * 3);
1503 if (debug && fifo->stop_gracefull)
1504 printk(KERN_DEBUG "%s: ERROR %s for fifo %i\n",
1505 hw->name, __func__, fifo->fifonum);
1508 /* start the interrupt transfer for the given fifo */
1510 start_int_fifo(struct usb_fifo *fifo)
1512 struct hfcsusb *hw = fifo->hw;
1516 printk(KERN_DEBUG "%s: %s: INT IN fifo:%d\n",
1517 hw->name, __func__, fifo->fifonum);
1520 fifo->urb = usb_alloc_urb(0, GFP_KERNEL);
1524 usb_fill_int_urb(fifo->urb, fifo->hw->dev, fifo->pipe,
1525 fifo->buffer, fifo->usb_packet_maxlen,
1526 (usb_complete_t)rx_int_complete, fifo, fifo->intervall);
1528 fifo->stop_gracefull = 0;
1529 errcode = usb_submit_urb(fifo->urb, GFP_KERNEL);
1531 printk(KERN_DEBUG "%s: %s: submit URB: status:%i\n",
1532 hw->name, __func__, errcode);
1538 setPortMode(struct hfcsusb *hw)
1540 if (debug & DEBUG_HW)
1541 printk(KERN_DEBUG "%s: %s %s\n", hw->name, __func__,
1542 (hw->protocol == ISDN_P_TE_S0) ? "TE" : "NT");
1544 if (hw->protocol == ISDN_P_TE_S0) {
1545 write_reg(hw, HFCUSB_SCTRL, 0x40);
1546 write_reg(hw, HFCUSB_SCTRL_E, 0x00);
1547 write_reg(hw, HFCUSB_CLKDEL, CLKDEL_TE);
1548 write_reg(hw, HFCUSB_STATES, 3 | 0x10);
1549 write_reg(hw, HFCUSB_STATES, 3);
1551 write_reg(hw, HFCUSB_SCTRL, 0x44);
1552 write_reg(hw, HFCUSB_SCTRL_E, 0x09);
1553 write_reg(hw, HFCUSB_CLKDEL, CLKDEL_NT);
1554 write_reg(hw, HFCUSB_STATES, 1 | 0x10);
1555 write_reg(hw, HFCUSB_STATES, 1);
1560 reset_hfcsusb(struct hfcsusb *hw)
1562 struct usb_fifo *fifo;
1565 if (debug & DEBUG_HW)
1566 printk(KERN_DEBUG "%s: %s\n", hw->name, __func__);
1569 write_reg(hw, HFCUSB_CIRM, 8);
1571 /* aux = output, reset off */
1572 write_reg(hw, HFCUSB_CIRM, 0x10);
1574 /* set USB_SIZE to match the wMaxPacketSize for INT or BULK transfers */
1575 write_reg(hw, HFCUSB_USB_SIZE, (hw->packet_size / 8) |
1576 ((hw->packet_size / 8) << 4));
1578 /* set USB_SIZE_I to match the the wMaxPacketSize for ISO transfers */
1579 write_reg(hw, HFCUSB_USB_SIZE_I, hw->iso_packet_size);
1581 /* enable PCM/GCI master mode */
1582 write_reg(hw, HFCUSB_MST_MODE1, 0); /* set default values */
1583 write_reg(hw, HFCUSB_MST_MODE0, 1); /* enable master mode */
1585 /* init the fifos */
1586 write_reg(hw, HFCUSB_F_THRES,
1587 (HFCUSB_TX_THRESHOLD / 8) | ((HFCUSB_RX_THRESHOLD / 8) << 4));
1590 for (i = 0; i < HFCUSB_NUM_FIFOS; i++) {
1591 write_reg(hw, HFCUSB_FIFO, i); /* select the desired fifo */
1593 (i <= HFCUSB_B2_RX) ? MAX_BCH_SIZE : MAX_DFRAME_LEN;
1594 fifo[i].last_urblen = 0;
1596 /* set 2 bit for D- & E-channel */
1597 write_reg(hw, HFCUSB_HDLC_PAR, ((i <= HFCUSB_B2_RX) ? 0 : 2));
1599 /* enable all fifos */
1600 if (i == HFCUSB_D_TX)
1601 write_reg(hw, HFCUSB_CON_HDLC,
1602 (hw->protocol == ISDN_P_NT_S0) ? 0x08 : 0x09);
1604 write_reg(hw, HFCUSB_CON_HDLC, 0x08);
1605 write_reg(hw, HFCUSB_INC_RES_F, 2); /* reset the fifo */
1608 write_reg(hw, HFCUSB_SCTRL_R, 0); /* disable both B receivers */
1609 handle_led(hw, LED_POWER_ON);
1612 /* start USB data pipes dependand on device's endpoint configuration */
1614 hfcsusb_start_endpoint(struct hfcsusb *hw, int channel)
1616 /* quick check if endpoint already running */
1617 if ((channel == HFC_CHAN_D) && (hw->fifos[HFCUSB_D_RX].active))
1619 if ((channel == HFC_CHAN_B1) && (hw->fifos[HFCUSB_B1_RX].active))
1621 if ((channel == HFC_CHAN_B2) && (hw->fifos[HFCUSB_B2_RX].active))
1623 if ((channel == HFC_CHAN_E) && (hw->fifos[HFCUSB_PCM_RX].active))
1626 /* start rx endpoints using USB INT IN method */
1627 if (hw->cfg_used == CNF_3INT3ISO || hw->cfg_used == CNF_4INT3ISO)
1628 start_int_fifo(hw->fifos + channel * 2 + 1);
1630 /* start rx endpoints using USB ISO IN method */
1631 if (hw->cfg_used == CNF_3ISO3ISO || hw->cfg_used == CNF_4ISO3ISO) {
1634 start_isoc_chain(hw->fifos + HFCUSB_D_RX,
1636 (usb_complete_t)rx_iso_complete,
1640 start_isoc_chain(hw->fifos + HFCUSB_PCM_RX,
1642 (usb_complete_t)rx_iso_complete,
1646 start_isoc_chain(hw->fifos + HFCUSB_B1_RX,
1648 (usb_complete_t)rx_iso_complete,
1652 start_isoc_chain(hw->fifos + HFCUSB_B2_RX,
1654 (usb_complete_t)rx_iso_complete,
1660 /* start tx endpoints using USB ISO OUT method */
1663 start_isoc_chain(hw->fifos + HFCUSB_D_TX,
1665 (usb_complete_t)tx_iso_complete, 1);
1668 start_isoc_chain(hw->fifos + HFCUSB_B1_TX,
1670 (usb_complete_t)tx_iso_complete, 1);
1673 start_isoc_chain(hw->fifos + HFCUSB_B2_TX,
1675 (usb_complete_t)tx_iso_complete, 1);
1680 /* stop USB data pipes dependand on device's endpoint configuration */
1682 hfcsusb_stop_endpoint(struct hfcsusb *hw, int channel)
1684 /* quick check if endpoint currently running */
1685 if ((channel == HFC_CHAN_D) && (!hw->fifos[HFCUSB_D_RX].active))
1687 if ((channel == HFC_CHAN_B1) && (!hw->fifos[HFCUSB_B1_RX].active))
1689 if ((channel == HFC_CHAN_B2) && (!hw->fifos[HFCUSB_B2_RX].active))
1691 if ((channel == HFC_CHAN_E) && (!hw->fifos[HFCUSB_PCM_RX].active))
1694 /* rx endpoints using USB INT IN method */
1695 if (hw->cfg_used == CNF_3INT3ISO || hw->cfg_used == CNF_4INT3ISO)
1696 stop_int_gracefull(hw->fifos + channel * 2 + 1);
1698 /* rx endpoints using USB ISO IN method */
1699 if (hw->cfg_used == CNF_3ISO3ISO || hw->cfg_used == CNF_4ISO3ISO)
1700 stop_iso_gracefull(hw->fifos + channel * 2 + 1);
1702 /* tx endpoints using USB ISO OUT method */
1703 if (channel != HFC_CHAN_E)
1704 stop_iso_gracefull(hw->fifos + channel * 2);
1708 /* Hardware Initialization */
1710 setup_hfcsusb(struct hfcsusb *hw)
1712 void *dmabuf = kmalloc(sizeof(u_char), GFP_KERNEL);
1716 if (debug & DBG_HFC_CALL_TRACE)
1717 printk(KERN_DEBUG "%s: %s\n", hw->name, __func__);
1722 ret = read_reg_atomic(hw, HFCUSB_CHIP_ID, dmabuf);
1724 memcpy(&b, dmabuf, sizeof(u_char));
1727 /* check the chip id */
1729 printk(KERN_DEBUG "%s: %s: cannot read chip id\n",
1730 hw->name, __func__);
1733 if (b != HFCUSB_CHIPID) {
1734 printk(KERN_DEBUG "%s: %s: Invalid chip id 0x%02x\n",
1735 hw->name, __func__, b);
1739 /* first set the needed config, interface and alternate */
1740 (void) usb_set_interface(hw->dev, hw->if_used, hw->alt_used);
1744 /* init the background machinery for control requests */
1745 hw->ctrl_read.bRequestType = 0xc0;
1746 hw->ctrl_read.bRequest = 1;
1747 hw->ctrl_read.wLength = cpu_to_le16(1);
1748 hw->ctrl_write.bRequestType = 0x40;
1749 hw->ctrl_write.bRequest = 0;
1750 hw->ctrl_write.wLength = 0;
1751 usb_fill_control_urb(hw->ctrl_urb, hw->dev, hw->ctrl_out_pipe,
1752 (u_char *)&hw->ctrl_write, NULL, 0,
1753 (usb_complete_t)ctrl_complete, hw);
1760 release_hw(struct hfcsusb *hw)
1762 if (debug & DBG_HFC_CALL_TRACE)
1763 printk(KERN_DEBUG "%s: %s\n", hw->name, __func__);
1766 * stop all endpoints gracefully
1767 * TODO: mISDN_core should generate CLOSE_CHANNEL
1768 * signals after calling mISDN_unregister_device()
1770 hfcsusb_stop_endpoint(hw, HFC_CHAN_D);
1771 hfcsusb_stop_endpoint(hw, HFC_CHAN_B1);
1772 hfcsusb_stop_endpoint(hw, HFC_CHAN_B2);
1773 if (hw->fifos[HFCUSB_PCM_RX].pipe)
1774 hfcsusb_stop_endpoint(hw, HFC_CHAN_E);
1775 if (hw->protocol == ISDN_P_TE_S0)
1776 l1_event(hw->dch.l1, CLOSE_CHANNEL);
1778 mISDN_unregister_device(&hw->dch.dev);
1779 mISDN_freebchannel(&hw->bch[1]);
1780 mISDN_freebchannel(&hw->bch[0]);
1781 mISDN_freedchannel(&hw->dch);
1784 usb_kill_urb(hw->ctrl_urb);
1785 usb_free_urb(hw->ctrl_urb);
1786 hw->ctrl_urb = NULL;
1790 usb_set_intfdata(hw->intf, NULL);
1791 list_del(&hw->list);
1797 deactivate_bchannel(struct bchannel *bch)
1799 struct hfcsusb *hw = bch->hw;
1802 if (bch->debug & DEBUG_HW)
1803 printk(KERN_DEBUG "%s: %s: bch->nr(%i)\n",
1804 hw->name, __func__, bch->nr);
1806 spin_lock_irqsave(&hw->lock, flags);
1807 mISDN_clear_bchannel(bch);
1808 spin_unlock_irqrestore(&hw->lock, flags);
1809 hfcsusb_setup_bch(bch, ISDN_P_NONE);
1810 hfcsusb_stop_endpoint(hw, bch->nr - 1);
1814 * Layer 1 B-channel hardware access
1817 hfc_bctrl(struct mISDNchannel *ch, u_int cmd, void *arg)
1819 struct bchannel *bch = container_of(ch, struct bchannel, ch);
1822 if (bch->debug & DEBUG_HW)
1823 printk(KERN_DEBUG "%s: cmd:%x %p\n", __func__, cmd, arg);
1827 case HW_TESTRX_HDLC:
1833 test_and_clear_bit(FLG_OPEN, &bch->Flags);
1834 deactivate_bchannel(bch);
1835 ch->protocol = ISDN_P_NONE;
1837 module_put(THIS_MODULE);
1840 case CONTROL_CHANNEL:
1841 ret = channel_bctrl(bch, arg);
1844 printk(KERN_WARNING "%s: unknown prim(%x)\n",
1851 setup_instance(struct hfcsusb *hw, struct device *parent)
1856 if (debug & DBG_HFC_CALL_TRACE)
1857 printk(KERN_DEBUG "%s: %s\n", hw->name, __func__);
1859 spin_lock_init(&hw->ctrl_lock);
1860 spin_lock_init(&hw->lock);
1862 mISDN_initdchannel(&hw->dch, MAX_DFRAME_LEN_L1, ph_state);
1863 hw->dch.debug = debug & 0xFFFF;
1865 hw->dch.dev.Dprotocols = (1 << ISDN_P_TE_S0) | (1 << ISDN_P_NT_S0);
1866 hw->dch.dev.D.send = hfcusb_l2l1D;
1867 hw->dch.dev.D.ctrl = hfc_dctrl;
1869 /* enable E-Channel logging */
1870 if (hw->fifos[HFCUSB_PCM_RX].pipe)
1871 mISDN_initdchannel(&hw->ech, MAX_DFRAME_LEN_L1, NULL);
1873 hw->dch.dev.Bprotocols = (1 << (ISDN_P_B_RAW & ISDN_P_B_MASK)) |
1874 (1 << (ISDN_P_B_HDLC & ISDN_P_B_MASK));
1875 hw->dch.dev.nrbchan = 2;
1876 for (i = 0; i < 2; i++) {
1877 hw->bch[i].nr = i + 1;
1878 set_channelmap(i + 1, hw->dch.dev.channelmap);
1879 hw->bch[i].debug = debug;
1880 mISDN_initbchannel(&hw->bch[i], MAX_DATA_MEM, poll >> 1);
1882 hw->bch[i].ch.send = hfcusb_l2l1B;
1883 hw->bch[i].ch.ctrl = hfc_bctrl;
1884 hw->bch[i].ch.nr = i + 1;
1885 list_add(&hw->bch[i].ch.list, &hw->dch.dev.bchannels);
1888 hw->fifos[HFCUSB_B1_TX].bch = &hw->bch[0];
1889 hw->fifos[HFCUSB_B1_RX].bch = &hw->bch[0];
1890 hw->fifos[HFCUSB_B2_TX].bch = &hw->bch[1];
1891 hw->fifos[HFCUSB_B2_RX].bch = &hw->bch[1];
1892 hw->fifos[HFCUSB_D_TX].dch = &hw->dch;
1893 hw->fifos[HFCUSB_D_RX].dch = &hw->dch;
1894 hw->fifos[HFCUSB_PCM_RX].ech = &hw->ech;
1895 hw->fifos[HFCUSB_PCM_TX].ech = &hw->ech;
1897 err = setup_hfcsusb(hw);
1901 snprintf(hw->name, MISDN_MAX_IDLEN - 1, "%s.%d", DRIVER_NAME,
1903 printk(KERN_INFO "%s: registered as '%s'\n",
1904 DRIVER_NAME, hw->name);
1906 err = mISDN_register_device(&hw->dch.dev, parent, hw->name);
1911 write_lock_irqsave(&HFClock, flags);
1912 list_add_tail(&hw->list, &HFClist);
1913 write_unlock_irqrestore(&HFClock, flags);
1917 mISDN_freebchannel(&hw->bch[1]);
1918 mISDN_freebchannel(&hw->bch[0]);
1919 mISDN_freedchannel(&hw->dch);
1925 hfcsusb_probe(struct usb_interface *intf, const struct usb_device_id *id)
1928 struct usb_device *dev = interface_to_usbdev(intf);
1929 struct usb_host_interface *iface = intf->cur_altsetting;
1930 struct usb_host_interface *iface_used = NULL;
1931 struct usb_host_endpoint *ep;
1932 struct hfcsusb_vdata *driver_info;
1933 int ifnum = iface->desc.bInterfaceNumber, i, idx, alt_idx,
1934 probe_alt_setting, vend_idx, cfg_used, *vcf, attr, cfg_found,
1935 ep_addr, cmptbl[16], small_match, iso_packet_size, packet_size,
1939 for (i = 0; hfcsusb_idtab[i].idVendor; i++) {
1940 if ((le16_to_cpu(dev->descriptor.idVendor)
1941 == hfcsusb_idtab[i].idVendor) &&
1942 (le16_to_cpu(dev->descriptor.idProduct)
1943 == hfcsusb_idtab[i].idProduct)) {
1950 "%s: interface(%d) actalt(%d) minor(%d) vend_idx(%d)\n",
1951 __func__, ifnum, iface->desc.bAlternateSetting,
1952 intf->minor, vend_idx);
1954 if (vend_idx == 0xffff) {
1956 "%s: no valid vendor found in USB descriptor\n",
1960 /* if vendor and product ID is OK, start probing alternate settings */
1964 /* default settings */
1965 iso_packet_size = 16;
1968 while (alt_idx < intf->num_altsetting) {
1969 iface = intf->altsetting + alt_idx;
1970 probe_alt_setting = iface->desc.bAlternateSetting;
1973 while (validconf[cfg_used][0]) {
1975 vcf = validconf[cfg_used];
1976 ep = iface->endpoint;
1977 memcpy(cmptbl, vcf, 16 * sizeof(int));
1979 /* check for all endpoints in this alternate setting */
1980 for (i = 0; i < iface->desc.bNumEndpoints; i++) {
1981 ep_addr = ep->desc.bEndpointAddress;
1983 /* get endpoint base */
1984 idx = ((ep_addr & 0x7f) - 1) * 2;
1990 attr = ep->desc.bmAttributes;
1992 if (cmptbl[idx] != EP_NOP) {
1993 if (cmptbl[idx] == EP_NUL)
1995 if (attr == USB_ENDPOINT_XFER_INT
1996 && cmptbl[idx] == EP_INT)
1997 cmptbl[idx] = EP_NUL;
1998 if (attr == USB_ENDPOINT_XFER_BULK
1999 && cmptbl[idx] == EP_BLK)
2000 cmptbl[idx] = EP_NUL;
2001 if (attr == USB_ENDPOINT_XFER_ISOC
2002 && cmptbl[idx] == EP_ISO)
2003 cmptbl[idx] = EP_NUL;
2005 if (attr == USB_ENDPOINT_XFER_INT &&
2006 ep->desc.bInterval < vcf[17]) {
2013 for (i = 0; i < 16; i++)
2014 if (cmptbl[i] != EP_NOP && cmptbl[i] != EP_NUL)
2018 if (small_match < cfg_used) {
2019 small_match = cfg_used;
2020 alt_used = probe_alt_setting;
2027 } /* (alt_idx < intf->num_altsetting) */
2029 /* not found a valid USB Ta Endpoint config */
2030 if (small_match == -1)
2034 hw = kzalloc(sizeof(struct hfcsusb), GFP_KERNEL);
2036 return -ENOMEM; /* got no mem */
2037 snprintf(hw->name, MISDN_MAX_IDLEN - 1, "%s", DRIVER_NAME);
2039 ep = iface->endpoint;
2040 vcf = validconf[small_match];
2042 for (i = 0; i < iface->desc.bNumEndpoints; i++) {
2045 ep_addr = ep->desc.bEndpointAddress;
2046 /* get endpoint base */
2047 idx = ((ep_addr & 0x7f) - 1) * 2;
2050 f = &hw->fifos[idx & 7];
2052 /* init Endpoints */
2053 if (vcf[idx] == EP_NOP || vcf[idx] == EP_NUL) {
2057 switch (ep->desc.bmAttributes) {
2058 case USB_ENDPOINT_XFER_INT:
2059 f->pipe = usb_rcvintpipe(dev,
2060 ep->desc.bEndpointAddress);
2061 f->usb_transfer_mode = USB_INT;
2062 packet_size = le16_to_cpu(ep->desc.wMaxPacketSize);
2064 case USB_ENDPOINT_XFER_BULK:
2066 f->pipe = usb_rcvbulkpipe(dev,
2067 ep->desc.bEndpointAddress);
2069 f->pipe = usb_sndbulkpipe(dev,
2070 ep->desc.bEndpointAddress);
2071 f->usb_transfer_mode = USB_BULK;
2072 packet_size = le16_to_cpu(ep->desc.wMaxPacketSize);
2074 case USB_ENDPOINT_XFER_ISOC:
2076 f->pipe = usb_rcvisocpipe(dev,
2077 ep->desc.bEndpointAddress);
2079 f->pipe = usb_sndisocpipe(dev,
2080 ep->desc.bEndpointAddress);
2081 f->usb_transfer_mode = USB_ISOC;
2082 iso_packet_size = le16_to_cpu(ep->desc.wMaxPacketSize);
2089 f->fifonum = idx & 7;
2091 f->usb_packet_maxlen =
2092 le16_to_cpu(ep->desc.wMaxPacketSize);
2093 f->intervall = ep->desc.bInterval;
2097 hw->dev = dev; /* save device */
2098 hw->if_used = ifnum; /* save used interface */
2099 hw->alt_used = alt_used; /* and alternate config */
2100 hw->ctrl_paksize = dev->descriptor.bMaxPacketSize0; /* control size */
2101 hw->cfg_used = vcf[16]; /* store used config */
2102 hw->vend_idx = vend_idx; /* store found vendor */
2103 hw->packet_size = packet_size;
2104 hw->iso_packet_size = iso_packet_size;
2106 /* create the control pipes needed for register access */
2107 hw->ctrl_in_pipe = usb_rcvctrlpipe(hw->dev, 0);
2108 hw->ctrl_out_pipe = usb_sndctrlpipe(hw->dev, 0);
2110 driver_info = (struct hfcsusb_vdata *)
2111 hfcsusb_idtab[vend_idx].driver_info;
2113 hw->ctrl_urb = usb_alloc_urb(0, GFP_KERNEL);
2114 if (!hw->ctrl_urb) {
2115 pr_warn("%s: No memory for control urb\n",
2116 driver_info->vend_name);
2121 pr_info("%s: %s: detected \"%s\" (%s, if=%d alt=%d)\n",
2122 hw->name, __func__, driver_info->vend_name,
2123 conf_str[small_match], ifnum, alt_used);
2125 if (setup_instance(hw, dev->dev.parent))
2129 usb_set_intfdata(hw->intf, hw);
2133 /* function called when an active device is removed */
2135 hfcsusb_disconnect(struct usb_interface *intf)
2137 struct hfcsusb *hw = usb_get_intfdata(intf);
2138 struct hfcsusb *next;
2141 printk(KERN_INFO "%s: device disconnected\n", hw->name);
2143 handle_led(hw, LED_POWER_OFF);
2146 list_for_each_entry_safe(hw, next, &HFClist, list)
2151 usb_set_intfdata(intf, NULL);
2154 static struct usb_driver hfcsusb_drv = {
2155 .name = DRIVER_NAME,
2156 .id_table = hfcsusb_idtab,
2157 .probe = hfcsusb_probe,
2158 .disconnect = hfcsusb_disconnect,
2159 .disable_hub_initiated_lpm = 1,
2162 module_usb_driver(hfcsusb_drv);