1 // SPDX-License-Identifier: GPL-2.0-or-later
3 * mISDN driver for Colognechip HFC-S USB chip
5 * Copyright 2001 by Peter Sprenger (sprenger@moving-bytes.de)
6 * Copyright 2008 by Martin Bachem (info@bachem-it.com)
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
13 * poll=<n>, default 128
14 * n : burst size of PH_DATA_IND at transparent rx data
16 * Revision: 0.3.3 (socket), 2008-11-05
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>
26 static unsigned int debug;
27 static int poll = DEFAULT_TRANSP_BURST_SZ;
29 static LIST_HEAD(HFClist);
30 static DEFINE_RWLOCK(HFClock);
33 MODULE_AUTHOR("Martin Bachem");
34 MODULE_LICENSE("GPL");
35 module_param(debug, uint, S_IRUGO | S_IWUSR);
36 module_param(poll, int, 0);
38 static int hfcsusb_cnt;
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);
51 /* start next background transfer for control channel */
53 ctrl_start_transfer(struct hfcsusb *hw)
55 if (debug & DBG_HFC_CALL_TRACE)
56 printk(KERN_DEBUG "%s: %s\n", hw->name, __func__);
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);
68 usb_submit_urb(hw->ctrl_urb, GFP_ATOMIC);
73 * queue a control transfer request to write HFC-S USB
74 * chip register using CTRL resuest queue
76 static int write_reg(struct hfcsusb *hw, __u8 reg, __u8 val)
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);
84 spin_lock(&hw->ctrl_lock);
85 if (hw->ctrl_cnt >= HFC_CTRL_BUFSIZE) {
86 spin_unlock(&hw->ctrl_lock);
89 buf = &hw->ctrl_buff[hw->ctrl_in_idx];
92 if (++hw->ctrl_in_idx >= HFC_CTRL_BUFSIZE)
94 if (++hw->ctrl_cnt == 1)
95 ctrl_start_transfer(hw);
96 spin_unlock(&hw->ctrl_lock);
101 /* control completion routine handling background control cmds */
103 ctrl_complete(struct urb *urb)
105 struct hfcsusb *hw = (struct hfcsusb *) urb->context;
107 if (debug & DBG_HFC_CALL_TRACE)
108 printk(KERN_DEBUG "%s: %s\n", hw->name, __func__);
112 hw->ctrl_cnt--; /* decrement actual count */
113 if (++hw->ctrl_out_idx >= HFC_CTRL_BUFSIZE)
114 hw->ctrl_out_idx = 0; /* pointer wrap */
116 ctrl_start_transfer(hw); /* start next transfer */
120 /* handle LED bits */
122 set_led_bit(struct hfcsusb *hw, signed short led_bits, int set_on)
126 hw->led_state &= ~abs(led_bits);
128 hw->led_state |= led_bits;
131 hw->led_state |= abs(led_bits);
133 hw->led_state &= ~led_bits;
137 /* handle LED requests */
139 handle_led(struct hfcsusb *hw, int event)
141 struct hfcsusb_vdata *driver_info = (struct hfcsusb_vdata *)
142 hfcsusb_idtab[hw->vend_idx].driver_info;
145 if (driver_info->led_scheme == LED_OFF)
147 tmpled = hw->led_state;
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);
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);
163 set_led_bit(hw, driver_info->led_bits[1], 1);
166 set_led_bit(hw, driver_info->led_bits[1], 0);
169 set_led_bit(hw, driver_info->led_bits[2], 1);
172 set_led_bit(hw, driver_info->led_bits[2], 0);
175 set_led_bit(hw, driver_info->led_bits[3], 1);
178 set_led_bit(hw, driver_info->led_bits[3], 0);
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",
186 HFCUSB_P_DATA, hw->led_state);
188 write_reg(hw, HFCUSB_P_DATA, hw->led_state);
193 * Layer2 -> Layer 1 Bchannel data
196 hfcusb_l2l1B(struct mISDNchannel *ch, struct sk_buff *skb)
198 struct bchannel *bch = container_of(ch, struct bchannel, ch);
199 struct hfcsusb *hw = bch->hw;
201 struct mISDNhead *hh = mISDN_HEAD_P(skb);
204 if (debug & DBG_HFC_CALL_TRACE)
205 printk(KERN_DEBUG "%s: %s\n", hw->name, __func__);
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);
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);
225 _queue_data(ch, PH_ACTIVATE_IND, MISDN_ID_ANY,
226 0, NULL, GFP_KERNEL);
228 case PH_DEACTIVATE_REQ:
229 deactivate_bchannel(bch);
230 _queue_data(ch, PH_DEACTIVATE_IND, MISDN_ID_ANY,
231 0, NULL, GFP_KERNEL);
241 * send full D/B channel status information
242 * as MPH_INFORMATION_IND
245 hfcsusb_ph_info(struct hfcsusb *hw)
248 struct dchannel *dch = &hw->dch;
251 phi = kzalloc(struct_size(phi, bch, dch->dev.nrbchan), GFP_ATOMIC);
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;
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);
270 * Layer2 -> Layer 1 Dchannel data
273 hfcusb_l2l1D(struct mISDNchannel *ch, struct sk_buff *skb)
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;
284 if (debug & DBG_HFC_CALL_TRACE)
285 printk(KERN_DEBUG "%s: %s: PH_DATA_REQ\n",
288 spin_lock_irqsave(&hw->lock, flags);
289 ret = dchannel_senddata(dch, skb);
290 spin_unlock_irqrestore(&hw->lock, flags);
293 queue_ch_frame(ch, PH_DATA_CNF, hh->id, NULL);
297 case PH_ACTIVATE_REQ:
298 if (debug & DBG_HFC_CALL_TRACE)
299 printk(KERN_DEBUG "%s: %s: PH_ACTIVATE_REQ %s\n",
301 (hw->protocol == ISDN_P_NT_S0) ? "NT" : "TE");
303 if (hw->protocol == ISDN_P_NT_S0) {
305 if (test_bit(FLG_ACTIVE, &dch->Flags)) {
306 _queue_data(&dch->dev.D,
307 PH_ACTIVATE_IND, MISDN_ID_ANY, 0,
310 hfcsusb_ph_command(hw,
312 test_and_set_bit(FLG_L2_ACTIVATED,
316 hfcsusb_ph_command(hw, HFC_L1_ACTIVATE_TE);
317 ret = l1_event(dch->l1, hh->prim);
321 case PH_DEACTIVATE_REQ:
322 if (debug & DBG_HFC_CALL_TRACE)
323 printk(KERN_DEBUG "%s: %s: PH_DEACTIVATE_REQ\n",
325 test_and_clear_bit(FLG_L2_ACTIVATED, &dch->Flags);
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);
332 dev_kfree_skb(dch->tx_skb);
337 dev_kfree_skb(dch->rx_skb);
340 test_and_clear_bit(FLG_TX_BUSY, &dch->Flags);
341 spin_unlock_irqrestore(&hw->lock, flags);
343 if (test_and_clear_bit(FLG_L1_BUSY, &dch->Flags))
344 dchannel_sched_event(&hc->dch, D_CLEARBUSY);
348 ret = l1_event(dch->l1, hh->prim);
350 case MPH_INFORMATION_REQ:
360 * Layer 1 callback function
363 hfc_l1callback(struct dchannel *dch, u_int cmd)
365 struct hfcsusb *hw = dch->hw;
367 if (debug & DBG_HFC_CALL_TRACE)
368 printk(KERN_DEBUG "%s: %s cmd 0x%x\n",
369 hw->name, __func__, cmd);
379 skb_queue_purge(&dch->squeue);
381 dev_kfree_skb(dch->tx_skb);
386 dev_kfree_skb(dch->rx_skb);
389 test_and_clear_bit(FLG_TX_BUSY, &dch->Flags);
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,
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,
402 if (dch->debug & DEBUG_HW)
403 printk(KERN_DEBUG "%s: %s: unknown cmd %x\n",
404 hw->name, __func__, cmd);
412 open_dchannel(struct hfcsusb *hw, struct mISDNchannel *ch,
413 struct channel_req *rq)
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)
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);
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);
440 hw->protocol = rq->protocol;
441 if (rq->protocol == ISDN_P_TE_S0) {
442 err = create_l1(&hw->dch, hfc_l1callback);
447 ch->protocol = rq->protocol;
450 if (rq->protocol != ch->protocol)
451 return -EPROTONOSUPPORT;
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);
459 if (!try_module_get(THIS_MODULE))
460 printk(KERN_WARNING "%s: %s: cannot get module\n",
466 open_bchannel(struct hfcsusb *hw, struct channel_req *rq)
468 struct bchannel *bch;
470 if (rq->adr.channel == 0 || rq->adr.channel > 2)
472 if (rq->protocol == ISDN_P_NONE)
475 if (debug & DBG_HFC_CALL_TRACE)
476 printk(KERN_DEBUG "%s: %s B%i\n",
477 hw->name, __func__, rq->adr.channel);
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;
485 if (!try_module_get(THIS_MODULE))
486 printk(KERN_WARNING "%s: %s:cannot get module\n",
492 channel_ctrl(struct hfcsusb *hw, struct mISDN_ctrl_req *cq)
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));
501 case MISDN_CTRL_GETOP:
502 cq->op = MISDN_CTRL_LOOP | MISDN_CTRL_CONNECT |
503 MISDN_CTRL_DISCONNECT;
506 printk(KERN_WARNING "%s: %s: unknown Op %x\n",
507 hw->name, __func__, cq->op);
515 * device control function
518 hfc_dctrl(struct mISDNchannel *ch, u_int cmd, void *arg)
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;
526 if (dch->debug & DEBUG_HW)
527 printk(KERN_DEBUG "%s: %s: cmd:%x %p\n",
528 hw->name, __func__, cmd, arg);
532 if ((rq->protocol == ISDN_P_TE_S0) ||
533 (rq->protocol == ISDN_P_NT_S0))
534 err = open_dchannel(hw, ch, rq);
536 err = open_bchannel(hw, rq);
542 if (debug & DEBUG_HW_OPEN)
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);
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);
553 module_put(THIS_MODULE);
555 case CONTROL_CHANNEL:
556 err = channel_ctrl(hw, arg);
559 if (dch->debug & DEBUG_HW)
560 printk(KERN_DEBUG "%s: %s: unknown command %x\n",
561 hw->name, __func__, cmd);
568 * S0 TE state change event handler
571 ph_state_te(struct dchannel *dch)
573 struct hfcsusb *hw = dch->hw;
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]);
580 printk(KERN_DEBUG "%s: %s: TE F%d\n",
581 hw->name, __func__, dch->state);
584 switch (dch->state) {
586 l1_event(dch->l1, HW_RESET_IND);
589 l1_event(dch->l1, HW_DEACT_IND);
593 l1_event(dch->l1, ANYSIGNAL);
596 l1_event(dch->l1, INFO2);
599 l1_event(dch->l1, INFO4_P8);
603 handle_led(hw, LED_S0_ON);
605 handle_led(hw, LED_S0_OFF);
609 * S0 NT state change event handler
612 ph_state_nt(struct dchannel *dch)
614 struct hfcsusb *hw = dch->hw;
616 if (debug & DEBUG_HW) {
617 if (dch->state <= HFC_MAX_NT_LAYER1_STATE)
618 printk(KERN_DEBUG "%s: %s: %s\n",
620 HFC_NT_LAYER1_STATES[dch->state]);
623 printk(KERN_INFO DRIVER_NAME "%s: %s: NT G%d\n",
624 hw->name, __func__, dch->state);
627 switch (dch->state) {
629 test_and_clear_bit(FLG_ACTIVE, &dch->Flags);
630 test_and_clear_bit(FLG_L2_ACTIVATED, &dch->Flags);
632 hw->timers &= ~NT_ACTIVATION_TIMER;
633 handle_led(hw, LED_S0_OFF);
637 if (hw->nt_timer < 0) {
639 hw->timers &= ~NT_ACTIVATION_TIMER;
640 hfcsusb_ph_command(dch->hw, HFC_L1_DEACTIVATE_NT);
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);
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);
658 hw->timers &= ~NT_ACTIVATION_TIMER;
667 ph_state(struct dchannel *dch)
669 struct hfcsusb *hw = dch->hw;
671 if (hw->protocol == ISDN_P_NT_S0)
673 else if (hw->protocol == ISDN_P_TE_S0)
678 * disable/enable BChannel for desired protocoll
681 hfcsusb_setup_bch(struct bchannel *bch, int protocol)
683 struct hfcsusb *hw = bch->hw;
684 __u8 conhdlc, sctrl, sctrl_r;
686 if (debug & DEBUG_HW)
687 printk(KERN_DEBUG "%s: %s: protocol %x-->%x B%d\n",
688 hw->name, __func__, bch->state, protocol,
691 /* setup val for CON_HDLC */
693 if (protocol > ISDN_P_NONE)
694 conhdlc = 8; /* enable FIFO */
697 case (-1): /* used for init */
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);
709 bch->state = protocol;
710 set_bit(FLG_TRANSPARENT, &bch->Flags);
712 case (ISDN_P_B_HDLC):
713 bch->state = protocol;
714 set_bit(FLG_HDLC, &bch->Flags);
717 if (debug & DEBUG_HW)
718 printk(KERN_DEBUG "%s: %s: prot not known %x\n",
719 hw->name, __func__, protocol);
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);
731 sctrl = 0x40 + ((hw->protocol == ISDN_P_TE_S0) ? 0x00 : 0x04);
733 if (test_bit(FLG_ACTIVE, &hw->bch[0].Flags)) {
737 if (test_bit(FLG_ACTIVE, &hw->bch[1].Flags)) {
741 write_reg(hw, HFCUSB_SCTRL, sctrl);
742 write_reg(hw, HFCUSB_SCTRL_R, sctrl_r);
744 if (protocol > ISDN_P_NONE)
745 handle_led(hw, (bch->nr == 1) ? LED_B1_ON : LED_B2_ON);
747 handle_led(hw, (bch->nr == 1) ? LED_B1_OFF :
755 hfcsusb_ph_command(struct hfcsusb *hw, u_char command)
757 if (debug & DEBUG_HW)
758 printk(KERN_DEBUG "%s: %s: %x\n",
759 hw->name, __func__, 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);
769 case HFC_L1_FORCE_DEACTIVATE_TE:
770 write_reg(hw, HFCUSB_STATES, 0x10);
771 write_reg(hw, HFCUSB_STATES, 0x03);
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);
779 write_reg(hw, HFCUSB_STATES, HFCUSB_ACTIVATE |
780 HFCUSB_DO_ACTION | HFCUSB_NT_G2_G3);
783 case HFC_L1_DEACTIVATE_NT:
784 write_reg(hw, HFCUSB_STATES,
791 * Layer 1 B-channel hardware access
794 channel_bctrl(struct bchannel *bch, struct mISDN_ctrl_req *cq)
796 return mISDN_ctrl_bchannel(bch, cq);
799 /* collect data from incoming interrupt or isochron USB data */
801 hfcsusb_rx_frame(struct usb_fifo *fifo, __u8 *data, unsigned int len,
804 struct hfcsusb *hw = fifo->hw;
805 struct sk_buff *rx_skb = NULL;
807 int fifon = fifo->fifonum;
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);
821 if ((!!fifo->dch + !!fifo->bch + !!fifo->ech) != 1) {
822 printk(KERN_DEBUG "%s: %s: undefined channel\n",
827 spin_lock_irqsave(&hw->lock, flags);
829 rx_skb = fifo->dch->rx_skb;
830 maxlen = fifo->dch->maxlen;
834 if (test_bit(FLG_RX_OFF, &fifo->bch->Flags)) {
835 fifo->bch->dropcnt += len;
836 spin_unlock_irqrestore(&hw->lock, flags);
839 maxlen = bchannel_get_rxbuf(fifo->bch, len);
840 rx_skb = fifo->bch->rx_skb;
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);
849 maxlen = fifo->bch->maxlen;
850 hdlc = test_bit(FLG_HDLC, &fifo->bch->Flags);
853 rx_skb = fifo->ech->rx_skb;
854 maxlen = fifo->ech->maxlen;
858 if (fifo->dch || fifo->ech) {
860 rx_skb = mI_alloc_skb(maxlen, GFP_ATOMIC);
863 fifo->dch->rx_skb = rx_skb;
865 fifo->ech->rx_skb = rx_skb;
868 printk(KERN_DEBUG "%s: %s: No mem for rx_skb\n",
870 spin_unlock_irqrestore(&hw->lock, flags);
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);
880 spin_unlock_irqrestore(&hw->lock, flags);
885 skb_put_data(rx_skb, data, len);
888 /* we have a complete hdlc packet */
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)"
895 hw->name, __func__, fifon,
898 while (i < rx_skb->len)
904 /* remove CRC & status */
905 skb_trim(rx_skb, rx_skb->len - 3);
908 recv_Dchannel(fifo->dch);
910 recv_Bchannel(fifo->bch, MISDN_ID_ANY,
913 recv_Echannel(fifo->ech,
916 if (debug & DBG_HFC_FIFO_VERBOSE) {
918 "%s: CRC or minlen ERROR fifon(%i) "
920 hw->name, fifon, rx_skb->len);
922 while (i < rx_skb->len)
931 /* deliver transparent data to layer2 */
932 recv_Bchannel(fifo->bch, MISDN_ID_ANY, false);
934 spin_unlock_irqrestore(&hw->lock, flags);
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)
944 usb_fill_bulk_urb(urb, dev, pipe, buf, packet_size * num_packets,
947 urb->number_of_packets = num_packets;
948 urb->transfer_flags = URB_ISO_ASAP;
949 urb->actual_length = 0;
950 urb->interval = interval;
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;
959 /* receive completion routine for all ISO tx fifos */
961 rx_iso_complete(struct urb *urb)
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;
973 fifon = fifo->fifonum;
974 status = urb->status;
976 spin_lock_irqsave(&hw->lock, flags);
977 if (fifo->stop_gracefull) {
978 fifo->stop_gracefull = 0;
980 spin_unlock_irqrestore(&hw->lock, flags);
983 spin_unlock_irqrestore(&hw->lock, flags);
986 * ISO transfer only partially completed,
987 * look at individual frame status for details
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);
995 /* clear status, so go on with ISO transfers */
1000 if (fifo->active && !status) {
1001 num_isoc_packets = iso_packets[fifon];
1002 maxlen = fifo->usb_packet_maxlen;
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;
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);
1016 /* USB data log for every D ISO in */
1017 if ((fifon == HFCUSB_D_RX) &&
1018 (debug & DBG_HFC_USB_VERBOSE)) {
1020 "%s: %s: %d (%d/%d) len(%d) ",
1021 hw->name, __func__, urb->start_frame,
1022 k, num_isoc_packets - 1,
1024 for (i = 0; i < len; i++)
1025 printk("%x ", buf[i]);
1030 if (fifo->last_urblen != maxlen) {
1032 * save fifo fill-level threshold bits
1033 * to use them later in TX ISO URB
1036 hw->threshold_mask = buf[1];
1038 if (fifon == HFCUSB_D_RX)
1039 s0_state = (buf[0] >> 4);
1041 eof[fifon] = buf[0] & 1;
1043 hfcsusb_rx_frame(fifo, buf + 2,
1044 len - 2, (len < maxlen)
1047 hfcsusb_rx_frame(fifo, buf, len,
1050 fifo->last_urblen = len;
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);
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);
1067 if (debug & DEBUG_HW)
1068 printk(KERN_DEBUG "%s: %s: error submitting "
1070 hw->name, __func__, errcode);
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);
1080 /* receive completion routine for all interrupt rx fifos */
1082 rx_int_complete(struct urb *urb)
1085 __u8 *buf, maxlen, fifon;
1086 struct usb_fifo *fifo = (struct usb_fifo *) urb->context;
1087 struct hfcsusb *hw = fifo->hw;
1089 unsigned long flags;
1091 spin_lock_irqsave(&hw->lock, flags);
1092 if (fifo->stop_gracefull) {
1093 fifo->stop_gracefull = 0;
1095 spin_unlock_irqrestore(&hw->lock, flags);
1098 spin_unlock_irqrestore(&hw->lock, flags);
1100 fifon = fifo->fifonum;
1101 if ((!fifo->active) || (urb->status)) {
1102 if (debug & DBG_HFC_URB_ERROR)
1104 "%s: %s: RX-Fifo %i is going down (%i)\n",
1105 hw->name, __func__, fifon, urb->status);
1107 fifo->urb->interval = 0; /* cancel automatic rescheduling */
1110 len = urb->actual_length;
1112 maxlen = fifo->usb_packet_maxlen;
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]);
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];
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);
1133 eof[fifon] = buf[0] & 1;
1134 /* if we have more than the 2 status bytes -> collect data */
1136 hfcsusb_rx_frame(fifo, buf + 2,
1137 urb->actual_length - 2,
1138 (len < maxlen) ? eof[fifon] : 0);
1140 hfcsusb_rx_frame(fifo, buf, urb->actual_length,
1141 (len < maxlen) ? eof[fifon] : 0);
1143 fifo->last_urblen = urb->actual_length;
1145 status = usb_submit_urb(urb, GFP_ATOMIC);
1147 if (debug & DEBUG_HW)
1148 printk(KERN_DEBUG "%s: %s: error resubmitting USB\n",
1149 hw->name, __func__);
1153 /* transmit completion routine for all ISO tx fifos */
1155 tx_iso_complete(struct urb *urb)
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,
1164 int frame_complete, fifon, status, fillempty = 0;
1166 unsigned long flags;
1168 spin_lock_irqsave(&hw->lock, flags);
1169 if (fifo->stop_gracefull) {
1170 fifo->stop_gracefull = 0;
1172 spin_unlock_irqrestore(&hw->lock, flags);
1177 tx_skb = fifo->dch->tx_skb;
1178 tx_idx = &fifo->dch->tx_idx;
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))
1188 printk(KERN_DEBUG "%s: %s: neither BCH nor DCH\n",
1189 hw->name, __func__);
1190 spin_unlock_irqrestore(&hw->lock, flags);
1194 fifon = fifo->fifonum;
1195 status = urb->status;
1200 * ISO transfer only partially completed,
1201 * look at individual frame status for details
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);
1209 /* clear status, so go on with ISO transfers */
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];
1218 /* predict dataflow to avoid fifo overflow */
1219 if (fifon >= HFCUSB_D_TX)
1220 sink = (threshbit) ? SINK_DMIN : SINK_DMAX;
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));
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;
1236 printk(KERN_DEBUG "%s: %s: "
1237 "ISO packet %i, status: %i\n",
1238 hw->name, __func__, k, errcode);
1242 /* Generate next ISO Packets */
1244 remain = tx_skb->len - *tx_idx;
1246 remain = 15; /* > not complete */
1251 fifo->bit_line -= sink;
1252 current_len = (0 - fifo->bit_line) / 8;
1253 if (current_len > 14)
1255 if (current_len < 0)
1257 if (remain < current_len)
1258 current_len = remain;
1260 /* how much bit do we put on the line? */
1261 fifo->bit_line += current_len * 8;
1263 context_iso_urb->buffer[tx_offset] = 0;
1264 if (current_len == remain) {
1266 /* signal frame completion */
1268 buffer[tx_offset] = 1;
1269 /* add 2 byte flags and 16bit
1270 * CRC at end of ISDN frame */
1271 fifo->bit_line += 32;
1276 /* copy tx data to iso-urb buffer */
1277 p = context_iso_urb->buffer + tx_offset + 1;
1279 memset(p, fifo->bch->fill[0],
1282 memcpy(p, (tx_skb->data + *tx_idx),
1284 *tx_idx += current_len;
1286 urb->iso_frame_desc[k].offset = tx_offset;
1287 urb->iso_frame_desc[k].length = current_len + 1;
1289 /* USB data log for every D ISO out */
1290 if ((fifon == HFCUSB_D_RX) && !fillempty &&
1291 (debug & DBG_HFC_USB_VERBOSE)) {
1293 "%s: %s (%d/%d) offs(%d) len(%d) ",
1295 k, num_isoc_packets - 1,
1296 urb->iso_frame_desc[k].offset,
1297 urb->iso_frame_desc[k].length);
1299 for (i = urb->iso_frame_desc[k].offset;
1300 i < (urb->iso_frame_desc[k].offset
1301 + urb->iso_frame_desc[k].length);
1304 context_iso_urb->buffer[i]);
1306 printk(" skb->len(%i) tx-idx(%d)\n",
1307 tx_skb->len, *tx_idx);
1310 tx_offset += (current_len + 1);
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;
1320 if (frame_complete) {
1323 if (debug & DBG_HFC_FIFO_VERBOSE) {
1324 printk(KERN_DEBUG "%s: %s: "
1325 "fifon(%i) new TX len(%i): ",
1327 fifon, tx_skb->len);
1329 while (i < tx_skb->len)
1335 dev_kfree_skb(tx_skb);
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;
1344 errcode = usb_submit_urb(urb, GFP_ATOMIC);
1346 if (debug & DEBUG_HW)
1348 "%s: %s: error submitting ISO URB: %d \n",
1349 hw->name, __func__, errcode);
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)
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);
1364 if (status && (debug & DBG_HFC_URB_ERROR))
1365 printk(KERN_DEBUG "%s: %s: urb->status %s (%i)"
1368 symbolic(urb_errlist, status), status, fifon);
1370 spin_unlock_irqrestore(&hw->lock, flags);
1374 * allocs urbs and start isoc transfer with two pending urbs to avoid
1375 * gaps in the transfer chain
1378 start_isoc_chain(struct usb_fifo *fifo, int num_packets_per_urb,
1379 usb_complete_t complete, int packet_size)
1381 struct hfcsusb *hw = fifo->hw;
1385 printk(KERN_DEBUG "%s: %s: fifo %i\n",
1386 hw->name, __func__, fifo->fifonum);
1388 /* allocate Memory for Iso out Urbs */
1389 for (i = 0; i < 2; i++) {
1390 if (!(fifo->iso[i].urb)) {
1392 usb_alloc_urb(num_packets_per_urb, GFP_KERNEL);
1393 if (!(fifo->iso[i].urb)) {
1395 "%s: %s: alloc urb for fifo %i failed",
1396 hw->name, __func__, fifo->fifonum);
1399 fifo->iso[i].owner_fifo = (struct usb_fifo *) fifo;
1400 fifo->iso[i].indx = i;
1402 /* Init the first iso */
1403 if (ISO_BUFFER_SIZE >=
1404 (fifo->usb_packet_maxlen *
1405 num_packets_per_urb)) {
1406 fill_isoc_urb(fifo->iso[i].urb,
1407 fifo->hw->dev, fifo->pipe,
1408 fifo->iso[i].buffer,
1409 num_packets_per_urb,
1410 fifo->usb_packet_maxlen,
1411 fifo->intervall, complete,
1413 memset(fifo->iso[i].buffer, 0,
1414 sizeof(fifo->iso[i].buffer));
1416 for (k = 0; k < num_packets_per_urb; k++) {
1418 iso_frame_desc[k].offset =
1421 iso_frame_desc[k].length =
1426 "%s: %s: ISO Buffer size to small!\n",
1427 hw->name, __func__);
1430 fifo->bit_line = BITLINE_INF;
1432 errcode = usb_submit_urb(fifo->iso[i].urb, GFP_KERNEL);
1433 fifo->active = (errcode >= 0) ? 1 : 0;
1434 fifo->stop_gracefull = 0;
1436 printk(KERN_DEBUG "%s: %s: %s URB nr:%d\n",
1438 symbolic(urb_errlist, errcode), i);
1441 return fifo->active;
1445 stop_iso_gracefull(struct usb_fifo *fifo)
1447 struct hfcsusb *hw = fifo->hw;
1451 for (i = 0; i < 2; i++) {
1452 spin_lock_irqsave(&hw->lock, flags);
1454 printk(KERN_DEBUG "%s: %s for fifo %i.%i\n",
1455 hw->name, __func__, fifo->fifonum, i);
1456 fifo->stop_gracefull = 1;
1457 spin_unlock_irqrestore(&hw->lock, flags);
1460 for (i = 0; i < 2; i++) {
1462 while (fifo->stop_gracefull && timeout--)
1463 schedule_timeout_interruptible((HZ / 1000) * 16);
1464 if (debug && fifo->stop_gracefull)
1465 printk(KERN_DEBUG "%s: ERROR %s for fifo %i.%i\n",
1466 hw->name, __func__, fifo->fifonum, i);
1471 stop_int_gracefull(struct usb_fifo *fifo)
1473 struct hfcsusb *hw = fifo->hw;
1477 spin_lock_irqsave(&hw->lock, flags);
1479 printk(KERN_DEBUG "%s: %s for fifo %i\n",
1480 hw->name, __func__, fifo->fifonum);
1481 fifo->stop_gracefull = 1;
1482 spin_unlock_irqrestore(&hw->lock, flags);
1485 while (fifo->stop_gracefull && timeout--)
1486 schedule_timeout_interruptible((HZ / 1000) * 3);
1487 if (debug && fifo->stop_gracefull)
1488 printk(KERN_DEBUG "%s: ERROR %s for fifo %i\n",
1489 hw->name, __func__, fifo->fifonum);
1492 /* start the interrupt transfer for the given fifo */
1494 start_int_fifo(struct usb_fifo *fifo)
1496 struct hfcsusb *hw = fifo->hw;
1500 printk(KERN_DEBUG "%s: %s: INT IN fifo:%d\n",
1501 hw->name, __func__, fifo->fifonum);
1504 fifo->urb = usb_alloc_urb(0, GFP_KERNEL);
1508 usb_fill_int_urb(fifo->urb, fifo->hw->dev, fifo->pipe,
1509 fifo->buffer, fifo->usb_packet_maxlen,
1510 (usb_complete_t)rx_int_complete, fifo, fifo->intervall);
1512 fifo->stop_gracefull = 0;
1513 errcode = usb_submit_urb(fifo->urb, GFP_KERNEL);
1515 printk(KERN_DEBUG "%s: %s: submit URB: status:%i\n",
1516 hw->name, __func__, errcode);
1522 setPortMode(struct hfcsusb *hw)
1524 if (debug & DEBUG_HW)
1525 printk(KERN_DEBUG "%s: %s %s\n", hw->name, __func__,
1526 (hw->protocol == ISDN_P_TE_S0) ? "TE" : "NT");
1528 if (hw->protocol == ISDN_P_TE_S0) {
1529 write_reg(hw, HFCUSB_SCTRL, 0x40);
1530 write_reg(hw, HFCUSB_SCTRL_E, 0x00);
1531 write_reg(hw, HFCUSB_CLKDEL, CLKDEL_TE);
1532 write_reg(hw, HFCUSB_STATES, 3 | 0x10);
1533 write_reg(hw, HFCUSB_STATES, 3);
1535 write_reg(hw, HFCUSB_SCTRL, 0x44);
1536 write_reg(hw, HFCUSB_SCTRL_E, 0x09);
1537 write_reg(hw, HFCUSB_CLKDEL, CLKDEL_NT);
1538 write_reg(hw, HFCUSB_STATES, 1 | 0x10);
1539 write_reg(hw, HFCUSB_STATES, 1);
1544 reset_hfcsusb(struct hfcsusb *hw)
1546 struct usb_fifo *fifo;
1549 if (debug & DEBUG_HW)
1550 printk(KERN_DEBUG "%s: %s\n", hw->name, __func__);
1553 write_reg(hw, HFCUSB_CIRM, 8);
1555 /* aux = output, reset off */
1556 write_reg(hw, HFCUSB_CIRM, 0x10);
1558 /* set USB_SIZE to match the wMaxPacketSize for INT or BULK transfers */
1559 write_reg(hw, HFCUSB_USB_SIZE, (hw->packet_size / 8) |
1560 ((hw->packet_size / 8) << 4));
1562 /* set USB_SIZE_I to match the the wMaxPacketSize for ISO transfers */
1563 write_reg(hw, HFCUSB_USB_SIZE_I, hw->iso_packet_size);
1565 /* enable PCM/GCI master mode */
1566 write_reg(hw, HFCUSB_MST_MODE1, 0); /* set default values */
1567 write_reg(hw, HFCUSB_MST_MODE0, 1); /* enable master mode */
1569 /* init the fifos */
1570 write_reg(hw, HFCUSB_F_THRES,
1571 (HFCUSB_TX_THRESHOLD / 8) | ((HFCUSB_RX_THRESHOLD / 8) << 4));
1574 for (i = 0; i < HFCUSB_NUM_FIFOS; i++) {
1575 write_reg(hw, HFCUSB_FIFO, i); /* select the desired fifo */
1577 (i <= HFCUSB_B2_RX) ? MAX_BCH_SIZE : MAX_DFRAME_LEN;
1578 fifo[i].last_urblen = 0;
1580 /* set 2 bit for D- & E-channel */
1581 write_reg(hw, HFCUSB_HDLC_PAR, ((i <= HFCUSB_B2_RX) ? 0 : 2));
1583 /* enable all fifos */
1584 if (i == HFCUSB_D_TX)
1585 write_reg(hw, HFCUSB_CON_HDLC,
1586 (hw->protocol == ISDN_P_NT_S0) ? 0x08 : 0x09);
1588 write_reg(hw, HFCUSB_CON_HDLC, 0x08);
1589 write_reg(hw, HFCUSB_INC_RES_F, 2); /* reset the fifo */
1592 write_reg(hw, HFCUSB_SCTRL_R, 0); /* disable both B receivers */
1593 handle_led(hw, LED_POWER_ON);
1596 /* start USB data pipes dependand on device's endpoint configuration */
1598 hfcsusb_start_endpoint(struct hfcsusb *hw, int channel)
1600 /* quick check if endpoint already running */
1601 if ((channel == HFC_CHAN_D) && (hw->fifos[HFCUSB_D_RX].active))
1603 if ((channel == HFC_CHAN_B1) && (hw->fifos[HFCUSB_B1_RX].active))
1605 if ((channel == HFC_CHAN_B2) && (hw->fifos[HFCUSB_B2_RX].active))
1607 if ((channel == HFC_CHAN_E) && (hw->fifos[HFCUSB_PCM_RX].active))
1610 /* start rx endpoints using USB INT IN method */
1611 if (hw->cfg_used == CNF_3INT3ISO || hw->cfg_used == CNF_4INT3ISO)
1612 start_int_fifo(hw->fifos + channel * 2 + 1);
1614 /* start rx endpoints using USB ISO IN method */
1615 if (hw->cfg_used == CNF_3ISO3ISO || hw->cfg_used == CNF_4ISO3ISO) {
1618 start_isoc_chain(hw->fifos + HFCUSB_D_RX,
1620 (usb_complete_t)rx_iso_complete,
1624 start_isoc_chain(hw->fifos + HFCUSB_PCM_RX,
1626 (usb_complete_t)rx_iso_complete,
1630 start_isoc_chain(hw->fifos + HFCUSB_B1_RX,
1632 (usb_complete_t)rx_iso_complete,
1636 start_isoc_chain(hw->fifos + HFCUSB_B2_RX,
1638 (usb_complete_t)rx_iso_complete,
1644 /* start tx endpoints using USB ISO OUT method */
1647 start_isoc_chain(hw->fifos + HFCUSB_D_TX,
1649 (usb_complete_t)tx_iso_complete, 1);
1652 start_isoc_chain(hw->fifos + HFCUSB_B1_TX,
1654 (usb_complete_t)tx_iso_complete, 1);
1657 start_isoc_chain(hw->fifos + HFCUSB_B2_TX,
1659 (usb_complete_t)tx_iso_complete, 1);
1664 /* stop USB data pipes dependand on device's endpoint configuration */
1666 hfcsusb_stop_endpoint(struct hfcsusb *hw, int channel)
1668 /* quick check if endpoint currently running */
1669 if ((channel == HFC_CHAN_D) && (!hw->fifos[HFCUSB_D_RX].active))
1671 if ((channel == HFC_CHAN_B1) && (!hw->fifos[HFCUSB_B1_RX].active))
1673 if ((channel == HFC_CHAN_B2) && (!hw->fifos[HFCUSB_B2_RX].active))
1675 if ((channel == HFC_CHAN_E) && (!hw->fifos[HFCUSB_PCM_RX].active))
1678 /* rx endpoints using USB INT IN method */
1679 if (hw->cfg_used == CNF_3INT3ISO || hw->cfg_used == CNF_4INT3ISO)
1680 stop_int_gracefull(hw->fifos + channel * 2 + 1);
1682 /* rx endpoints using USB ISO IN method */
1683 if (hw->cfg_used == CNF_3ISO3ISO || hw->cfg_used == CNF_4ISO3ISO)
1684 stop_iso_gracefull(hw->fifos + channel * 2 + 1);
1686 /* tx endpoints using USB ISO OUT method */
1687 if (channel != HFC_CHAN_E)
1688 stop_iso_gracefull(hw->fifos + channel * 2);
1692 /* Hardware Initialization */
1694 setup_hfcsusb(struct hfcsusb *hw)
1698 if (debug & DBG_HFC_CALL_TRACE)
1699 printk(KERN_DEBUG "%s: %s\n", hw->name, __func__);
1701 /* check the chip id */
1702 if (read_reg_atomic(hw, HFCUSB_CHIP_ID, &b) != 1) {
1703 printk(KERN_DEBUG "%s: %s: cannot read chip id\n",
1704 hw->name, __func__);
1707 if (b != HFCUSB_CHIPID) {
1708 printk(KERN_DEBUG "%s: %s: Invalid chip id 0x%02x\n",
1709 hw->name, __func__, b);
1713 /* first set the needed config, interface and alternate */
1714 (void) usb_set_interface(hw->dev, hw->if_used, hw->alt_used);
1718 /* init the background machinery for control requests */
1719 hw->ctrl_read.bRequestType = 0xc0;
1720 hw->ctrl_read.bRequest = 1;
1721 hw->ctrl_read.wLength = cpu_to_le16(1);
1722 hw->ctrl_write.bRequestType = 0x40;
1723 hw->ctrl_write.bRequest = 0;
1724 hw->ctrl_write.wLength = 0;
1725 usb_fill_control_urb(hw->ctrl_urb, hw->dev, hw->ctrl_out_pipe,
1726 (u_char *)&hw->ctrl_write, NULL, 0,
1727 (usb_complete_t)ctrl_complete, hw);
1734 release_hw(struct hfcsusb *hw)
1736 if (debug & DBG_HFC_CALL_TRACE)
1737 printk(KERN_DEBUG "%s: %s\n", hw->name, __func__);
1740 * stop all endpoints gracefully
1741 * TODO: mISDN_core should generate CLOSE_CHANNEL
1742 * signals after calling mISDN_unregister_device()
1744 hfcsusb_stop_endpoint(hw, HFC_CHAN_D);
1745 hfcsusb_stop_endpoint(hw, HFC_CHAN_B1);
1746 hfcsusb_stop_endpoint(hw, HFC_CHAN_B2);
1747 if (hw->fifos[HFCUSB_PCM_RX].pipe)
1748 hfcsusb_stop_endpoint(hw, HFC_CHAN_E);
1749 if (hw->protocol == ISDN_P_TE_S0)
1750 l1_event(hw->dch.l1, CLOSE_CHANNEL);
1752 mISDN_unregister_device(&hw->dch.dev);
1753 mISDN_freebchannel(&hw->bch[1]);
1754 mISDN_freebchannel(&hw->bch[0]);
1755 mISDN_freedchannel(&hw->dch);
1758 usb_kill_urb(hw->ctrl_urb);
1759 usb_free_urb(hw->ctrl_urb);
1760 hw->ctrl_urb = NULL;
1764 usb_set_intfdata(hw->intf, NULL);
1765 list_del(&hw->list);
1771 deactivate_bchannel(struct bchannel *bch)
1773 struct hfcsusb *hw = bch->hw;
1776 if (bch->debug & DEBUG_HW)
1777 printk(KERN_DEBUG "%s: %s: bch->nr(%i)\n",
1778 hw->name, __func__, bch->nr);
1780 spin_lock_irqsave(&hw->lock, flags);
1781 mISDN_clear_bchannel(bch);
1782 spin_unlock_irqrestore(&hw->lock, flags);
1783 hfcsusb_setup_bch(bch, ISDN_P_NONE);
1784 hfcsusb_stop_endpoint(hw, bch->nr - 1);
1788 * Layer 1 B-channel hardware access
1791 hfc_bctrl(struct mISDNchannel *ch, u_int cmd, void *arg)
1793 struct bchannel *bch = container_of(ch, struct bchannel, ch);
1796 if (bch->debug & DEBUG_HW)
1797 printk(KERN_DEBUG "%s: cmd:%x %p\n", __func__, cmd, arg);
1801 case HW_TESTRX_HDLC:
1807 test_and_clear_bit(FLG_OPEN, &bch->Flags);
1808 deactivate_bchannel(bch);
1809 ch->protocol = ISDN_P_NONE;
1811 module_put(THIS_MODULE);
1814 case CONTROL_CHANNEL:
1815 ret = channel_bctrl(bch, arg);
1818 printk(KERN_WARNING "%s: unknown prim(%x)\n",
1825 setup_instance(struct hfcsusb *hw, struct device *parent)
1830 if (debug & DBG_HFC_CALL_TRACE)
1831 printk(KERN_DEBUG "%s: %s\n", hw->name, __func__);
1833 spin_lock_init(&hw->ctrl_lock);
1834 spin_lock_init(&hw->lock);
1836 mISDN_initdchannel(&hw->dch, MAX_DFRAME_LEN_L1, ph_state);
1837 hw->dch.debug = debug & 0xFFFF;
1839 hw->dch.dev.Dprotocols = (1 << ISDN_P_TE_S0) | (1 << ISDN_P_NT_S0);
1840 hw->dch.dev.D.send = hfcusb_l2l1D;
1841 hw->dch.dev.D.ctrl = hfc_dctrl;
1843 /* enable E-Channel logging */
1844 if (hw->fifos[HFCUSB_PCM_RX].pipe)
1845 mISDN_initdchannel(&hw->ech, MAX_DFRAME_LEN_L1, NULL);
1847 hw->dch.dev.Bprotocols = (1 << (ISDN_P_B_RAW & ISDN_P_B_MASK)) |
1848 (1 << (ISDN_P_B_HDLC & ISDN_P_B_MASK));
1849 hw->dch.dev.nrbchan = 2;
1850 for (i = 0; i < 2; i++) {
1851 hw->bch[i].nr = i + 1;
1852 set_channelmap(i + 1, hw->dch.dev.channelmap);
1853 hw->bch[i].debug = debug;
1854 mISDN_initbchannel(&hw->bch[i], MAX_DATA_MEM, poll >> 1);
1856 hw->bch[i].ch.send = hfcusb_l2l1B;
1857 hw->bch[i].ch.ctrl = hfc_bctrl;
1858 hw->bch[i].ch.nr = i + 1;
1859 list_add(&hw->bch[i].ch.list, &hw->dch.dev.bchannels);
1862 hw->fifos[HFCUSB_B1_TX].bch = &hw->bch[0];
1863 hw->fifos[HFCUSB_B1_RX].bch = &hw->bch[0];
1864 hw->fifos[HFCUSB_B2_TX].bch = &hw->bch[1];
1865 hw->fifos[HFCUSB_B2_RX].bch = &hw->bch[1];
1866 hw->fifos[HFCUSB_D_TX].dch = &hw->dch;
1867 hw->fifos[HFCUSB_D_RX].dch = &hw->dch;
1868 hw->fifos[HFCUSB_PCM_RX].ech = &hw->ech;
1869 hw->fifos[HFCUSB_PCM_TX].ech = &hw->ech;
1871 err = setup_hfcsusb(hw);
1875 snprintf(hw->name, MISDN_MAX_IDLEN - 1, "%s.%d", DRIVER_NAME,
1877 printk(KERN_INFO "%s: registered as '%s'\n",
1878 DRIVER_NAME, hw->name);
1880 err = mISDN_register_device(&hw->dch.dev, parent, hw->name);
1885 write_lock_irqsave(&HFClock, flags);
1886 list_add_tail(&hw->list, &HFClist);
1887 write_unlock_irqrestore(&HFClock, flags);
1891 mISDN_freebchannel(&hw->bch[1]);
1892 mISDN_freebchannel(&hw->bch[0]);
1893 mISDN_freedchannel(&hw->dch);
1899 hfcsusb_probe(struct usb_interface *intf, const struct usb_device_id *id)
1902 struct usb_device *dev = interface_to_usbdev(intf);
1903 struct usb_host_interface *iface = intf->cur_altsetting;
1904 struct usb_host_interface *iface_used = NULL;
1905 struct usb_host_endpoint *ep;
1906 struct hfcsusb_vdata *driver_info;
1907 int ifnum = iface->desc.bInterfaceNumber, i, idx, alt_idx,
1908 probe_alt_setting, vend_idx, cfg_used, *vcf, attr, cfg_found,
1909 ep_addr, cmptbl[16], small_match, iso_packet_size, packet_size,
1913 for (i = 0; hfcsusb_idtab[i].idVendor; i++) {
1914 if ((le16_to_cpu(dev->descriptor.idVendor)
1915 == hfcsusb_idtab[i].idVendor) &&
1916 (le16_to_cpu(dev->descriptor.idProduct)
1917 == hfcsusb_idtab[i].idProduct)) {
1924 "%s: interface(%d) actalt(%d) minor(%d) vend_idx(%d)\n",
1925 __func__, ifnum, iface->desc.bAlternateSetting,
1926 intf->minor, vend_idx);
1928 if (vend_idx == 0xffff) {
1930 "%s: no valid vendor found in USB descriptor\n",
1934 /* if vendor and product ID is OK, start probing alternate settings */
1938 /* default settings */
1939 iso_packet_size = 16;
1942 while (alt_idx < intf->num_altsetting) {
1943 iface = intf->altsetting + alt_idx;
1944 probe_alt_setting = iface->desc.bAlternateSetting;
1947 while (validconf[cfg_used][0]) {
1949 vcf = validconf[cfg_used];
1950 ep = iface->endpoint;
1951 memcpy(cmptbl, vcf, 16 * sizeof(int));
1953 /* check for all endpoints in this alternate setting */
1954 for (i = 0; i < iface->desc.bNumEndpoints; i++) {
1955 ep_addr = ep->desc.bEndpointAddress;
1957 /* get endpoint base */
1958 idx = ((ep_addr & 0x7f) - 1) * 2;
1964 attr = ep->desc.bmAttributes;
1966 if (cmptbl[idx] != EP_NOP) {
1967 if (cmptbl[idx] == EP_NUL)
1969 if (attr == USB_ENDPOINT_XFER_INT
1970 && cmptbl[idx] == EP_INT)
1971 cmptbl[idx] = EP_NUL;
1972 if (attr == USB_ENDPOINT_XFER_BULK
1973 && cmptbl[idx] == EP_BLK)
1974 cmptbl[idx] = EP_NUL;
1975 if (attr == USB_ENDPOINT_XFER_ISOC
1976 && cmptbl[idx] == EP_ISO)
1977 cmptbl[idx] = EP_NUL;
1979 if (attr == USB_ENDPOINT_XFER_INT &&
1980 ep->desc.bInterval < vcf[17]) {
1987 for (i = 0; i < 16; i++)
1988 if (cmptbl[i] != EP_NOP && cmptbl[i] != EP_NUL)
1992 if (small_match < cfg_used) {
1993 small_match = cfg_used;
1994 alt_used = probe_alt_setting;
2001 } /* (alt_idx < intf->num_altsetting) */
2003 /* not found a valid USB Ta Endpoint config */
2004 if (small_match == -1)
2008 hw = kzalloc(sizeof(struct hfcsusb), GFP_KERNEL);
2010 return -ENOMEM; /* got no mem */
2011 snprintf(hw->name, MISDN_MAX_IDLEN - 1, "%s", DRIVER_NAME);
2013 ep = iface->endpoint;
2014 vcf = validconf[small_match];
2016 for (i = 0; i < iface->desc.bNumEndpoints; i++) {
2019 ep_addr = ep->desc.bEndpointAddress;
2020 /* get endpoint base */
2021 idx = ((ep_addr & 0x7f) - 1) * 2;
2024 f = &hw->fifos[idx & 7];
2026 /* init Endpoints */
2027 if (vcf[idx] == EP_NOP || vcf[idx] == EP_NUL) {
2031 switch (ep->desc.bmAttributes) {
2032 case USB_ENDPOINT_XFER_INT:
2033 f->pipe = usb_rcvintpipe(dev,
2034 ep->desc.bEndpointAddress);
2035 f->usb_transfer_mode = USB_INT;
2036 packet_size = le16_to_cpu(ep->desc.wMaxPacketSize);
2038 case USB_ENDPOINT_XFER_BULK:
2040 f->pipe = usb_rcvbulkpipe(dev,
2041 ep->desc.bEndpointAddress);
2043 f->pipe = usb_sndbulkpipe(dev,
2044 ep->desc.bEndpointAddress);
2045 f->usb_transfer_mode = USB_BULK;
2046 packet_size = le16_to_cpu(ep->desc.wMaxPacketSize);
2048 case USB_ENDPOINT_XFER_ISOC:
2050 f->pipe = usb_rcvisocpipe(dev,
2051 ep->desc.bEndpointAddress);
2053 f->pipe = usb_sndisocpipe(dev,
2054 ep->desc.bEndpointAddress);
2055 f->usb_transfer_mode = USB_ISOC;
2056 iso_packet_size = le16_to_cpu(ep->desc.wMaxPacketSize);
2063 f->fifonum = idx & 7;
2065 f->usb_packet_maxlen =
2066 le16_to_cpu(ep->desc.wMaxPacketSize);
2067 f->intervall = ep->desc.bInterval;
2071 hw->dev = dev; /* save device */
2072 hw->if_used = ifnum; /* save used interface */
2073 hw->alt_used = alt_used; /* and alternate config */
2074 hw->ctrl_paksize = dev->descriptor.bMaxPacketSize0; /* control size */
2075 hw->cfg_used = vcf[16]; /* store used config */
2076 hw->vend_idx = vend_idx; /* store found vendor */
2077 hw->packet_size = packet_size;
2078 hw->iso_packet_size = iso_packet_size;
2080 /* create the control pipes needed for register access */
2081 hw->ctrl_in_pipe = usb_rcvctrlpipe(hw->dev, 0);
2082 hw->ctrl_out_pipe = usb_sndctrlpipe(hw->dev, 0);
2084 driver_info = (struct hfcsusb_vdata *)
2085 hfcsusb_idtab[vend_idx].driver_info;
2087 hw->ctrl_urb = usb_alloc_urb(0, GFP_KERNEL);
2088 if (!hw->ctrl_urb) {
2089 pr_warn("%s: No memory for control urb\n",
2090 driver_info->vend_name);
2095 pr_info("%s: %s: detected \"%s\" (%s, if=%d alt=%d)\n",
2096 hw->name, __func__, driver_info->vend_name,
2097 conf_str[small_match], ifnum, alt_used);
2099 if (setup_instance(hw, dev->dev.parent))
2103 usb_set_intfdata(hw->intf, hw);
2107 /* function called when an active device is removed */
2109 hfcsusb_disconnect(struct usb_interface *intf)
2111 struct hfcsusb *hw = usb_get_intfdata(intf);
2112 struct hfcsusb *next;
2115 printk(KERN_INFO "%s: device disconnected\n", hw->name);
2117 handle_led(hw, LED_POWER_OFF);
2120 list_for_each_entry_safe(hw, next, &HFClist, list)
2125 usb_set_intfdata(intf, NULL);
2128 static struct usb_driver hfcsusb_drv = {
2129 .name = DRIVER_NAME,
2130 .id_table = hfcsusb_idtab,
2131 .probe = hfcsusb_probe,
2132 .disconnect = hfcsusb_disconnect,
2133 .disable_hub_initiated_lpm = 1,
2136 module_usb_driver(hfcsusb_drv);