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 int 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 struct_size(phi, bch, dch->dev.nrbchan), phi, GFP_ATOMIC);
271 * Layer2 -> Layer 1 Dchannel data
274 hfcusb_l2l1D(struct mISDNchannel *ch, struct sk_buff *skb)
276 struct mISDNdevice *dev = container_of(ch, struct mISDNdevice, D);
277 struct dchannel *dch = container_of(dev, struct dchannel, dev);
278 struct mISDNhead *hh = mISDN_HEAD_P(skb);
279 struct hfcsusb *hw = dch->hw;
285 if (debug & DBG_HFC_CALL_TRACE)
286 printk(KERN_DEBUG "%s: %s: PH_DATA_REQ\n",
289 spin_lock_irqsave(&hw->lock, flags);
290 ret = dchannel_senddata(dch, skb);
291 spin_unlock_irqrestore(&hw->lock, flags);
294 queue_ch_frame(ch, PH_DATA_CNF, hh->id, NULL);
298 case PH_ACTIVATE_REQ:
299 if (debug & DBG_HFC_CALL_TRACE)
300 printk(KERN_DEBUG "%s: %s: PH_ACTIVATE_REQ %s\n",
302 (hw->protocol == ISDN_P_NT_S0) ? "NT" : "TE");
304 if (hw->protocol == ISDN_P_NT_S0) {
306 if (test_bit(FLG_ACTIVE, &dch->Flags)) {
307 _queue_data(&dch->dev.D,
308 PH_ACTIVATE_IND, MISDN_ID_ANY, 0,
311 hfcsusb_ph_command(hw,
313 test_and_set_bit(FLG_L2_ACTIVATED,
317 hfcsusb_ph_command(hw, HFC_L1_ACTIVATE_TE);
318 ret = l1_event(dch->l1, hh->prim);
322 case PH_DEACTIVATE_REQ:
323 if (debug & DBG_HFC_CALL_TRACE)
324 printk(KERN_DEBUG "%s: %s: PH_DEACTIVATE_REQ\n",
326 test_and_clear_bit(FLG_L2_ACTIVATED, &dch->Flags);
328 if (hw->protocol == ISDN_P_NT_S0) {
329 hfcsusb_ph_command(hw, HFC_L1_DEACTIVATE_NT);
330 spin_lock_irqsave(&hw->lock, flags);
331 skb_queue_purge(&dch->squeue);
333 dev_kfree_skb(dch->tx_skb);
338 dev_kfree_skb(dch->rx_skb);
341 test_and_clear_bit(FLG_TX_BUSY, &dch->Flags);
342 spin_unlock_irqrestore(&hw->lock, flags);
344 if (test_and_clear_bit(FLG_L1_BUSY, &dch->Flags))
345 dchannel_sched_event(&hc->dch, D_CLEARBUSY);
349 ret = l1_event(dch->l1, hh->prim);
351 case MPH_INFORMATION_REQ:
352 ret = hfcsusb_ph_info(hw);
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);
407 return hfcsusb_ph_info(hw);
411 open_dchannel(struct hfcsusb *hw, struct mISDNchannel *ch,
412 struct channel_req *rq)
416 if (debug & DEBUG_HW_OPEN)
417 printk(KERN_DEBUG "%s: %s: dev(%d) open addr(%i) from %p\n",
418 hw->name, __func__, hw->dch.dev.id, rq->adr.channel,
419 __builtin_return_address(0));
420 if (rq->protocol == ISDN_P_NONE)
423 test_and_clear_bit(FLG_ACTIVE, &hw->dch.Flags);
424 test_and_clear_bit(FLG_ACTIVE, &hw->ech.Flags);
425 hfcsusb_start_endpoint(hw, HFC_CHAN_D);
427 /* E-Channel logging */
428 if (rq->adr.channel == 1) {
429 if (hw->fifos[HFCUSB_PCM_RX].pipe) {
430 hfcsusb_start_endpoint(hw, HFC_CHAN_E);
431 set_bit(FLG_ACTIVE, &hw->ech.Flags);
432 _queue_data(&hw->ech.dev.D, PH_ACTIVATE_IND,
433 MISDN_ID_ANY, 0, NULL, GFP_ATOMIC);
439 hw->protocol = rq->protocol;
440 if (rq->protocol == ISDN_P_TE_S0) {
441 err = create_l1(&hw->dch, hfc_l1callback);
446 ch->protocol = rq->protocol;
449 if (rq->protocol != ch->protocol)
450 return -EPROTONOSUPPORT;
453 if (((ch->protocol == ISDN_P_NT_S0) && (hw->dch.state == 3)) ||
454 ((ch->protocol == ISDN_P_TE_S0) && (hw->dch.state == 7)))
455 _queue_data(ch, PH_ACTIVATE_IND, MISDN_ID_ANY,
456 0, NULL, GFP_KERNEL);
458 if (!try_module_get(THIS_MODULE))
459 printk(KERN_WARNING "%s: %s: cannot get module\n",
465 open_bchannel(struct hfcsusb *hw, struct channel_req *rq)
467 struct bchannel *bch;
469 if (rq->adr.channel == 0 || rq->adr.channel > 2)
471 if (rq->protocol == ISDN_P_NONE)
474 if (debug & DBG_HFC_CALL_TRACE)
475 printk(KERN_DEBUG "%s: %s B%i\n",
476 hw->name, __func__, rq->adr.channel);
478 bch = &hw->bch[rq->adr.channel - 1];
479 if (test_and_set_bit(FLG_OPEN, &bch->Flags))
480 return -EBUSY; /* b-channel can be only open once */
481 bch->ch.protocol = rq->protocol;
484 if (!try_module_get(THIS_MODULE))
485 printk(KERN_WARNING "%s: %s:cannot get module\n",
491 channel_ctrl(struct hfcsusb *hw, struct mISDN_ctrl_req *cq)
495 if (debug & DBG_HFC_CALL_TRACE)
496 printk(KERN_DEBUG "%s: %s op(0x%x) channel(0x%x)\n",
497 hw->name, __func__, (cq->op), (cq->channel));
500 case MISDN_CTRL_GETOP:
501 cq->op = MISDN_CTRL_LOOP | MISDN_CTRL_CONNECT |
502 MISDN_CTRL_DISCONNECT;
505 printk(KERN_WARNING "%s: %s: unknown Op %x\n",
506 hw->name, __func__, cq->op);
514 * device control function
517 hfc_dctrl(struct mISDNchannel *ch, u_int cmd, void *arg)
519 struct mISDNdevice *dev = container_of(ch, struct mISDNdevice, D);
520 struct dchannel *dch = container_of(dev, struct dchannel, dev);
521 struct hfcsusb *hw = dch->hw;
522 struct channel_req *rq;
525 if (dch->debug & DEBUG_HW)
526 printk(KERN_DEBUG "%s: %s: cmd:%x %p\n",
527 hw->name, __func__, cmd, arg);
531 if ((rq->protocol == ISDN_P_TE_S0) ||
532 (rq->protocol == ISDN_P_NT_S0))
533 err = open_dchannel(hw, ch, rq);
535 err = open_bchannel(hw, rq);
541 if (debug & DEBUG_HW_OPEN)
543 "%s: %s: dev(%d) close from %p (open %d)\n",
544 hw->name, __func__, hw->dch.dev.id,
545 __builtin_return_address(0), hw->open);
547 hfcsusb_stop_endpoint(hw, HFC_CHAN_D);
548 if (hw->fifos[HFCUSB_PCM_RX].pipe)
549 hfcsusb_stop_endpoint(hw, HFC_CHAN_E);
550 handle_led(hw, LED_POWER_ON);
552 module_put(THIS_MODULE);
554 case CONTROL_CHANNEL:
555 err = channel_ctrl(hw, arg);
558 if (dch->debug & DEBUG_HW)
559 printk(KERN_DEBUG "%s: %s: unknown command %x\n",
560 hw->name, __func__, cmd);
567 * S0 TE state change event handler
570 ph_state_te(struct dchannel *dch)
572 struct hfcsusb *hw = dch->hw;
574 if (debug & DEBUG_HW) {
575 if (dch->state <= HFC_MAX_TE_LAYER1_STATE)
576 printk(KERN_DEBUG "%s: %s: %s\n", hw->name, __func__,
577 HFC_TE_LAYER1_STATES[dch->state]);
579 printk(KERN_DEBUG "%s: %s: TE F%d\n",
580 hw->name, __func__, dch->state);
583 switch (dch->state) {
585 l1_event(dch->l1, HW_RESET_IND);
588 l1_event(dch->l1, HW_DEACT_IND);
592 l1_event(dch->l1, ANYSIGNAL);
595 l1_event(dch->l1, INFO2);
598 l1_event(dch->l1, INFO4_P8);
602 handle_led(hw, LED_S0_ON);
604 handle_led(hw, LED_S0_OFF);
608 * S0 NT state change event handler
611 ph_state_nt(struct dchannel *dch)
613 struct hfcsusb *hw = dch->hw;
615 if (debug & DEBUG_HW) {
616 if (dch->state <= HFC_MAX_NT_LAYER1_STATE)
617 printk(KERN_DEBUG "%s: %s: %s\n",
619 HFC_NT_LAYER1_STATES[dch->state]);
622 printk(KERN_INFO DRIVER_NAME "%s: %s: NT G%d\n",
623 hw->name, __func__, dch->state);
626 switch (dch->state) {
628 test_and_clear_bit(FLG_ACTIVE, &dch->Flags);
629 test_and_clear_bit(FLG_L2_ACTIVATED, &dch->Flags);
631 hw->timers &= ~NT_ACTIVATION_TIMER;
632 handle_led(hw, LED_S0_OFF);
636 if (hw->nt_timer < 0) {
638 hw->timers &= ~NT_ACTIVATION_TIMER;
639 hfcsusb_ph_command(dch->hw, HFC_L1_DEACTIVATE_NT);
641 hw->timers |= NT_ACTIVATION_TIMER;
642 hw->nt_timer = NT_T1_COUNT;
643 /* allow G2 -> G3 transition */
644 write_reg(hw, HFCUSB_STATES, 2 | HFCUSB_NT_G2_G3);
649 hw->timers &= ~NT_ACTIVATION_TIMER;
650 test_and_set_bit(FLG_ACTIVE, &dch->Flags);
651 _queue_data(&dch->dev.D, PH_ACTIVATE_IND,
652 MISDN_ID_ANY, 0, NULL, GFP_ATOMIC);
653 handle_led(hw, LED_S0_ON);
657 hw->timers &= ~NT_ACTIVATION_TIMER;
666 ph_state(struct dchannel *dch)
668 struct hfcsusb *hw = dch->hw;
670 if (hw->protocol == ISDN_P_NT_S0)
672 else if (hw->protocol == ISDN_P_TE_S0)
677 * disable/enable BChannel for desired protocoll
680 hfcsusb_setup_bch(struct bchannel *bch, int protocol)
682 struct hfcsusb *hw = bch->hw;
683 __u8 conhdlc, sctrl, sctrl_r;
685 if (debug & DEBUG_HW)
686 printk(KERN_DEBUG "%s: %s: protocol %x-->%x B%d\n",
687 hw->name, __func__, bch->state, protocol,
690 /* setup val for CON_HDLC */
692 if (protocol > ISDN_P_NONE)
693 conhdlc = 8; /* enable FIFO */
696 case (-1): /* used for init */
700 if (bch->state == ISDN_P_NONE)
701 return 0; /* already in idle state */
702 bch->state = ISDN_P_NONE;
703 clear_bit(FLG_HDLC, &bch->Flags);
704 clear_bit(FLG_TRANSPARENT, &bch->Flags);
708 bch->state = protocol;
709 set_bit(FLG_TRANSPARENT, &bch->Flags);
711 case (ISDN_P_B_HDLC):
712 bch->state = protocol;
713 set_bit(FLG_HDLC, &bch->Flags);
716 if (debug & DEBUG_HW)
717 printk(KERN_DEBUG "%s: %s: prot not known %x\n",
718 hw->name, __func__, protocol);
722 if (protocol >= ISDN_P_NONE) {
723 write_reg(hw, HFCUSB_FIFO, (bch->nr == 1) ? 0 : 2);
724 write_reg(hw, HFCUSB_CON_HDLC, conhdlc);
725 write_reg(hw, HFCUSB_INC_RES_F, 2);
726 write_reg(hw, HFCUSB_FIFO, (bch->nr == 1) ? 1 : 3);
727 write_reg(hw, HFCUSB_CON_HDLC, conhdlc);
728 write_reg(hw, HFCUSB_INC_RES_F, 2);
730 sctrl = 0x40 + ((hw->protocol == ISDN_P_TE_S0) ? 0x00 : 0x04);
732 if (test_bit(FLG_ACTIVE, &hw->bch[0].Flags)) {
736 if (test_bit(FLG_ACTIVE, &hw->bch[1].Flags)) {
740 write_reg(hw, HFCUSB_SCTRL, sctrl);
741 write_reg(hw, HFCUSB_SCTRL_R, sctrl_r);
743 if (protocol > ISDN_P_NONE)
744 handle_led(hw, (bch->nr == 1) ? LED_B1_ON : LED_B2_ON);
746 handle_led(hw, (bch->nr == 1) ? LED_B1_OFF :
749 return hfcsusb_ph_info(hw);
753 hfcsusb_ph_command(struct hfcsusb *hw, u_char command)
755 if (debug & DEBUG_HW)
756 printk(KERN_DEBUG "%s: %s: %x\n",
757 hw->name, __func__, command);
760 case HFC_L1_ACTIVATE_TE:
761 /* force sending sending INFO1 */
762 write_reg(hw, HFCUSB_STATES, 0x14);
763 /* start l1 activation */
764 write_reg(hw, HFCUSB_STATES, 0x04);
767 case HFC_L1_FORCE_DEACTIVATE_TE:
768 write_reg(hw, HFCUSB_STATES, 0x10);
769 write_reg(hw, HFCUSB_STATES, 0x03);
772 case HFC_L1_ACTIVATE_NT:
773 if (hw->dch.state == 3)
774 _queue_data(&hw->dch.dev.D, PH_ACTIVATE_IND,
775 MISDN_ID_ANY, 0, NULL, GFP_ATOMIC);
777 write_reg(hw, HFCUSB_STATES, HFCUSB_ACTIVATE |
778 HFCUSB_DO_ACTION | HFCUSB_NT_G2_G3);
781 case HFC_L1_DEACTIVATE_NT:
782 write_reg(hw, HFCUSB_STATES,
789 * Layer 1 B-channel hardware access
792 channel_bctrl(struct bchannel *bch, struct mISDN_ctrl_req *cq)
794 return mISDN_ctrl_bchannel(bch, cq);
797 /* collect data from incoming interrupt or isochron USB data */
799 hfcsusb_rx_frame(struct usb_fifo *fifo, __u8 *data, unsigned int len,
802 struct hfcsusb *hw = fifo->hw;
803 struct sk_buff *rx_skb = NULL;
805 int fifon = fifo->fifonum;
810 if (debug & DBG_HFC_CALL_TRACE)
811 printk(KERN_DEBUG "%s: %s: fifo(%i) len(%i) "
812 "dch(%p) bch(%p) ech(%p)\n",
813 hw->name, __func__, fifon, len,
814 fifo->dch, fifo->bch, fifo->ech);
819 if ((!!fifo->dch + !!fifo->bch + !!fifo->ech) != 1) {
820 printk(KERN_DEBUG "%s: %s: undefined channel\n",
825 spin_lock_irqsave(&hw->lock, flags);
827 rx_skb = fifo->dch->rx_skb;
828 maxlen = fifo->dch->maxlen;
832 if (test_bit(FLG_RX_OFF, &fifo->bch->Flags)) {
833 fifo->bch->dropcnt += len;
834 spin_unlock_irqrestore(&hw->lock, flags);
837 maxlen = bchannel_get_rxbuf(fifo->bch, len);
838 rx_skb = fifo->bch->rx_skb;
842 pr_warn("%s.B%d: No bufferspace for %d bytes\n",
843 hw->name, fifo->bch->nr, len);
844 spin_unlock_irqrestore(&hw->lock, flags);
847 maxlen = fifo->bch->maxlen;
848 hdlc = test_bit(FLG_HDLC, &fifo->bch->Flags);
851 rx_skb = fifo->ech->rx_skb;
852 maxlen = fifo->ech->maxlen;
856 if (fifo->dch || fifo->ech) {
858 rx_skb = mI_alloc_skb(maxlen, GFP_ATOMIC);
861 fifo->dch->rx_skb = rx_skb;
863 fifo->ech->rx_skb = rx_skb;
866 printk(KERN_DEBUG "%s: %s: No mem for rx_skb\n",
868 spin_unlock_irqrestore(&hw->lock, flags);
872 /* D/E-Channel SKB range check */
873 if ((rx_skb->len + len) >= MAX_DFRAME_LEN_L1) {
874 printk(KERN_DEBUG "%s: %s: sbk mem exceeded "
875 "for fifo(%d) HFCUSB_D_RX\n",
876 hw->name, __func__, fifon);
878 spin_unlock_irqrestore(&hw->lock, flags);
883 skb_put_data(rx_skb, data, len);
886 /* we have a complete hdlc packet */
888 if ((rx_skb->len > 3) &&
889 (!(rx_skb->data[rx_skb->len - 1]))) {
890 if (debug & DBG_HFC_FIFO_VERBOSE) {
891 printk(KERN_DEBUG "%s: %s: fifon(%i)"
893 hw->name, __func__, fifon,
896 while (i < rx_skb->len)
902 /* remove CRC & status */
903 skb_trim(rx_skb, rx_skb->len - 3);
906 recv_Dchannel(fifo->dch);
908 recv_Bchannel(fifo->bch, MISDN_ID_ANY,
911 recv_Echannel(fifo->ech,
914 if (debug & DBG_HFC_FIFO_VERBOSE) {
916 "%s: CRC or minlen ERROR fifon(%i) "
918 hw->name, fifon, rx_skb->len);
920 while (i < rx_skb->len)
929 /* deliver transparent data to layer2 */
930 recv_Bchannel(fifo->bch, MISDN_ID_ANY, false);
932 spin_unlock_irqrestore(&hw->lock, flags);
936 fill_isoc_urb(struct urb *urb, struct usb_device *dev, unsigned int pipe,
937 void *buf, int num_packets, int packet_size, int interval,
938 usb_complete_t complete, void *context)
942 usb_fill_bulk_urb(urb, dev, pipe, buf, packet_size * num_packets,
945 urb->number_of_packets = num_packets;
946 urb->transfer_flags = URB_ISO_ASAP;
947 urb->actual_length = 0;
948 urb->interval = interval;
950 for (k = 0; k < num_packets; k++) {
951 urb->iso_frame_desc[k].offset = packet_size * k;
952 urb->iso_frame_desc[k].length = packet_size;
953 urb->iso_frame_desc[k].actual_length = 0;
957 /* receive completion routine for all ISO tx fifos */
959 rx_iso_complete(struct urb *urb)
961 struct iso_urb *context_iso_urb = (struct iso_urb *) urb->context;
962 struct usb_fifo *fifo = context_iso_urb->owner_fifo;
963 struct hfcsusb *hw = fifo->hw;
964 int k, len, errcode, offset, num_isoc_packets, fifon, maxlen,
965 status, iso_status, i;
971 fifon = fifo->fifonum;
972 status = urb->status;
974 spin_lock_irqsave(&hw->lock, flags);
975 if (fifo->stop_gracefull) {
976 fifo->stop_gracefull = 0;
978 spin_unlock_irqrestore(&hw->lock, flags);
981 spin_unlock_irqrestore(&hw->lock, flags);
984 * ISO transfer only partially completed,
985 * look at individual frame status for details
987 if (status == -EXDEV) {
988 if (debug & DEBUG_HW)
989 printk(KERN_DEBUG "%s: %s: with -EXDEV "
990 "urb->status %d, fifonum %d\n",
991 hw->name, __func__, status, fifon);
993 /* clear status, so go on with ISO transfers */
998 if (fifo->active && !status) {
999 num_isoc_packets = iso_packets[fifon];
1000 maxlen = fifo->usb_packet_maxlen;
1002 for (k = 0; k < num_isoc_packets; ++k) {
1003 len = urb->iso_frame_desc[k].actual_length;
1004 offset = urb->iso_frame_desc[k].offset;
1005 buf = context_iso_urb->buffer + offset;
1006 iso_status = urb->iso_frame_desc[k].status;
1008 if (iso_status && (debug & DBG_HFC_FIFO_VERBOSE)) {
1009 printk(KERN_DEBUG "%s: %s: "
1010 "ISO packet %i, status: %i\n",
1011 hw->name, __func__, k, iso_status);
1014 /* USB data log for every D ISO in */
1015 if ((fifon == HFCUSB_D_RX) &&
1016 (debug & DBG_HFC_USB_VERBOSE)) {
1018 "%s: %s: %d (%d/%d) len(%d) ",
1019 hw->name, __func__, urb->start_frame,
1020 k, num_isoc_packets - 1,
1022 for (i = 0; i < len; i++)
1023 printk("%x ", buf[i]);
1028 if (fifo->last_urblen != maxlen) {
1030 * save fifo fill-level threshold bits
1031 * to use them later in TX ISO URB
1034 hw->threshold_mask = buf[1];
1036 if (fifon == HFCUSB_D_RX)
1037 s0_state = (buf[0] >> 4);
1039 eof[fifon] = buf[0] & 1;
1041 hfcsusb_rx_frame(fifo, buf + 2,
1042 len - 2, (len < maxlen)
1045 hfcsusb_rx_frame(fifo, buf, len,
1048 fifo->last_urblen = len;
1052 /* signal S0 layer1 state change */
1053 if ((s0_state) && (hw->initdone) &&
1054 (s0_state != hw->dch.state)) {
1055 hw->dch.state = s0_state;
1056 schedule_event(&hw->dch, FLG_PHCHANGE);
1059 fill_isoc_urb(urb, fifo->hw->dev, fifo->pipe,
1060 context_iso_urb->buffer, num_isoc_packets,
1061 fifo->usb_packet_maxlen, fifo->intervall,
1062 (usb_complete_t)rx_iso_complete, urb->context);
1063 errcode = usb_submit_urb(urb, GFP_ATOMIC);
1065 if (debug & DEBUG_HW)
1066 printk(KERN_DEBUG "%s: %s: error submitting "
1068 hw->name, __func__, errcode);
1071 if (status && (debug & DBG_HFC_URB_INFO))
1072 printk(KERN_DEBUG "%s: %s: rx_iso_complete : "
1073 "urb->status %d, fifonum %d\n",
1074 hw->name, __func__, status, fifon);
1078 /* receive completion routine for all interrupt rx fifos */
1080 rx_int_complete(struct urb *urb)
1083 __u8 *buf, maxlen, fifon;
1084 struct usb_fifo *fifo = (struct usb_fifo *) urb->context;
1085 struct hfcsusb *hw = fifo->hw;
1087 unsigned long flags;
1089 spin_lock_irqsave(&hw->lock, flags);
1090 if (fifo->stop_gracefull) {
1091 fifo->stop_gracefull = 0;
1093 spin_unlock_irqrestore(&hw->lock, flags);
1096 spin_unlock_irqrestore(&hw->lock, flags);
1098 fifon = fifo->fifonum;
1099 if ((!fifo->active) || (urb->status)) {
1100 if (debug & DBG_HFC_URB_ERROR)
1102 "%s: %s: RX-Fifo %i is going down (%i)\n",
1103 hw->name, __func__, fifon, urb->status);
1105 fifo->urb->interval = 0; /* cancel automatic rescheduling */
1108 len = urb->actual_length;
1110 maxlen = fifo->usb_packet_maxlen;
1112 /* USB data log for every D INT in */
1113 if ((fifon == HFCUSB_D_RX) && (debug & DBG_HFC_USB_VERBOSE)) {
1114 printk(KERN_DEBUG "%s: %s: D RX INT len(%d) ",
1115 hw->name, __func__, len);
1116 for (i = 0; i < len; i++)
1117 printk("%02x ", buf[i]);
1121 if (fifo->last_urblen != fifo->usb_packet_maxlen) {
1122 /* the threshold mask is in the 2nd status byte */
1123 hw->threshold_mask = buf[1];
1125 /* signal S0 layer1 state change */
1126 if (hw->initdone && ((buf[0] >> 4) != hw->dch.state)) {
1127 hw->dch.state = (buf[0] >> 4);
1128 schedule_event(&hw->dch, FLG_PHCHANGE);
1131 eof[fifon] = buf[0] & 1;
1132 /* if we have more than the 2 status bytes -> collect data */
1134 hfcsusb_rx_frame(fifo, buf + 2,
1135 urb->actual_length - 2,
1136 (len < maxlen) ? eof[fifon] : 0);
1138 hfcsusb_rx_frame(fifo, buf, urb->actual_length,
1139 (len < maxlen) ? eof[fifon] : 0);
1141 fifo->last_urblen = urb->actual_length;
1143 status = usb_submit_urb(urb, GFP_ATOMIC);
1145 if (debug & DEBUG_HW)
1146 printk(KERN_DEBUG "%s: %s: error resubmitting USB\n",
1147 hw->name, __func__);
1151 /* transmit completion routine for all ISO tx fifos */
1153 tx_iso_complete(struct urb *urb)
1155 struct iso_urb *context_iso_urb = (struct iso_urb *) urb->context;
1156 struct usb_fifo *fifo = context_iso_urb->owner_fifo;
1157 struct hfcsusb *hw = fifo->hw;
1158 struct sk_buff *tx_skb;
1159 int k, tx_offset, num_isoc_packets, sink, remain, current_len,
1162 int frame_complete, fifon, status, fillempty = 0;
1164 unsigned long flags;
1166 spin_lock_irqsave(&hw->lock, flags);
1167 if (fifo->stop_gracefull) {
1168 fifo->stop_gracefull = 0;
1170 spin_unlock_irqrestore(&hw->lock, flags);
1175 tx_skb = fifo->dch->tx_skb;
1176 tx_idx = &fifo->dch->tx_idx;
1178 } else if (fifo->bch) {
1179 tx_skb = fifo->bch->tx_skb;
1180 tx_idx = &fifo->bch->tx_idx;
1181 hdlc = test_bit(FLG_HDLC, &fifo->bch->Flags);
1182 if (!tx_skb && !hdlc &&
1183 test_bit(FLG_FILLEMPTY, &fifo->bch->Flags))
1186 printk(KERN_DEBUG "%s: %s: neither BCH nor DCH\n",
1187 hw->name, __func__);
1188 spin_unlock_irqrestore(&hw->lock, flags);
1192 fifon = fifo->fifonum;
1193 status = urb->status;
1198 * ISO transfer only partially completed,
1199 * look at individual frame status for details
1201 if (status == -EXDEV) {
1202 if (debug & DBG_HFC_URB_ERROR)
1203 printk(KERN_DEBUG "%s: %s: "
1204 "-EXDEV (%i) fifon (%d)\n",
1205 hw->name, __func__, status, fifon);
1207 /* clear status, so go on with ISO transfers */
1211 if (fifo->active && !status) {
1212 /* is FifoFull-threshold set for our channel? */
1213 threshbit = (hw->threshold_mask & (1 << fifon));
1214 num_isoc_packets = iso_packets[fifon];
1216 /* predict dataflow to avoid fifo overflow */
1217 if (fifon >= HFCUSB_D_TX)
1218 sink = (threshbit) ? SINK_DMIN : SINK_DMAX;
1220 sink = (threshbit) ? SINK_MIN : SINK_MAX;
1221 fill_isoc_urb(urb, fifo->hw->dev, fifo->pipe,
1222 context_iso_urb->buffer, num_isoc_packets,
1223 fifo->usb_packet_maxlen, fifo->intervall,
1224 (usb_complete_t)tx_iso_complete, urb->context);
1225 memset(context_iso_urb->buffer, 0,
1226 sizeof(context_iso_urb->buffer));
1229 for (k = 0; k < num_isoc_packets; ++k) {
1230 /* analyze tx success of previous ISO packets */
1231 if (debug & DBG_HFC_URB_ERROR) {
1232 errcode = urb->iso_frame_desc[k].status;
1234 printk(KERN_DEBUG "%s: %s: "
1235 "ISO packet %i, status: %i\n",
1236 hw->name, __func__, k, errcode);
1240 /* Generate next ISO Packets */
1242 remain = tx_skb->len - *tx_idx;
1244 remain = 15; /* > not complete */
1249 fifo->bit_line -= sink;
1250 current_len = (0 - fifo->bit_line) / 8;
1251 if (current_len > 14)
1253 if (current_len < 0)
1255 if (remain < current_len)
1256 current_len = remain;
1258 /* how much bit do we put on the line? */
1259 fifo->bit_line += current_len * 8;
1261 context_iso_urb->buffer[tx_offset] = 0;
1262 if (current_len == remain) {
1264 /* signal frame completion */
1266 buffer[tx_offset] = 1;
1267 /* add 2 byte flags and 16bit
1268 * CRC at end of ISDN frame */
1269 fifo->bit_line += 32;
1274 /* copy tx data to iso-urb buffer */
1275 p = context_iso_urb->buffer + tx_offset + 1;
1277 memset(p, fifo->bch->fill[0],
1280 memcpy(p, (tx_skb->data + *tx_idx),
1282 *tx_idx += current_len;
1284 urb->iso_frame_desc[k].offset = tx_offset;
1285 urb->iso_frame_desc[k].length = current_len + 1;
1287 /* USB data log for every D ISO out */
1288 if ((fifon == HFCUSB_D_RX) && !fillempty &&
1289 (debug & DBG_HFC_USB_VERBOSE)) {
1291 "%s: %s (%d/%d) offs(%d) len(%d) ",
1293 k, num_isoc_packets - 1,
1294 urb->iso_frame_desc[k].offset,
1295 urb->iso_frame_desc[k].length);
1297 for (i = urb->iso_frame_desc[k].offset;
1298 i < (urb->iso_frame_desc[k].offset
1299 + urb->iso_frame_desc[k].length);
1302 context_iso_urb->buffer[i]);
1304 printk(" skb->len(%i) tx-idx(%d)\n",
1305 tx_skb->len, *tx_idx);
1308 tx_offset += (current_len + 1);
1310 urb->iso_frame_desc[k].offset = tx_offset++;
1311 urb->iso_frame_desc[k].length = 1;
1312 /* we lower data margin every msec */
1313 fifo->bit_line -= sink;
1314 if (fifo->bit_line < BITLINE_INF)
1315 fifo->bit_line = BITLINE_INF;
1318 if (frame_complete) {
1321 if (debug & DBG_HFC_FIFO_VERBOSE) {
1322 printk(KERN_DEBUG "%s: %s: "
1323 "fifon(%i) new TX len(%i): ",
1325 fifon, tx_skb->len);
1327 while (i < tx_skb->len)
1333 dev_kfree_skb(tx_skb);
1335 if (fifo->dch && get_next_dframe(fifo->dch))
1336 tx_skb = fifo->dch->tx_skb;
1337 else if (fifo->bch &&
1338 get_next_bframe(fifo->bch))
1339 tx_skb = fifo->bch->tx_skb;
1342 errcode = usb_submit_urb(urb, GFP_ATOMIC);
1344 if (debug & DEBUG_HW)
1346 "%s: %s: error submitting ISO URB: %d \n",
1347 hw->name, __func__, errcode);
1351 * abuse DChannel tx iso completion to trigger NT mode state
1352 * changes tx_iso_complete is assumed to be called every
1353 * fifo->intervall (ms)
1355 if ((fifon == HFCUSB_D_TX) && (hw->protocol == ISDN_P_NT_S0)
1356 && (hw->timers & NT_ACTIVATION_TIMER)) {
1357 if ((--hw->nt_timer) < 0)
1358 schedule_event(&hw->dch, FLG_PHCHANGE);
1362 if (status && (debug & DBG_HFC_URB_ERROR))
1363 printk(KERN_DEBUG "%s: %s: urb->status %s (%i)"
1366 symbolic(urb_errlist, status), status, fifon);
1368 spin_unlock_irqrestore(&hw->lock, flags);
1372 * allocs urbs and start isoc transfer with two pending urbs to avoid
1373 * gaps in the transfer chain
1376 start_isoc_chain(struct usb_fifo *fifo, int num_packets_per_urb,
1377 usb_complete_t complete, int packet_size)
1379 struct hfcsusb *hw = fifo->hw;
1383 printk(KERN_DEBUG "%s: %s: fifo %i\n",
1384 hw->name, __func__, fifo->fifonum);
1386 /* allocate Memory for Iso out Urbs */
1387 for (i = 0; i < 2; i++) {
1388 if (!(fifo->iso[i].urb)) {
1390 usb_alloc_urb(num_packets_per_urb, GFP_KERNEL);
1391 if (!(fifo->iso[i].urb)) {
1393 "%s: %s: alloc urb for fifo %i failed",
1394 hw->name, __func__, fifo->fifonum);
1397 fifo->iso[i].owner_fifo = (struct usb_fifo *) fifo;
1398 fifo->iso[i].indx = i;
1400 /* Init the first iso */
1401 if (ISO_BUFFER_SIZE >=
1402 (fifo->usb_packet_maxlen *
1403 num_packets_per_urb)) {
1404 fill_isoc_urb(fifo->iso[i].urb,
1405 fifo->hw->dev, fifo->pipe,
1406 fifo->iso[i].buffer,
1407 num_packets_per_urb,
1408 fifo->usb_packet_maxlen,
1409 fifo->intervall, complete,
1411 memset(fifo->iso[i].buffer, 0,
1412 sizeof(fifo->iso[i].buffer));
1414 for (k = 0; k < num_packets_per_urb; k++) {
1416 iso_frame_desc[k].offset =
1419 iso_frame_desc[k].length =
1424 "%s: %s: ISO Buffer size to small!\n",
1425 hw->name, __func__);
1428 fifo->bit_line = BITLINE_INF;
1430 errcode = usb_submit_urb(fifo->iso[i].urb, GFP_KERNEL);
1431 fifo->active = (errcode >= 0) ? 1 : 0;
1432 fifo->stop_gracefull = 0;
1434 printk(KERN_DEBUG "%s: %s: %s URB nr:%d\n",
1436 symbolic(urb_errlist, errcode), i);
1439 return fifo->active;
1443 stop_iso_gracefull(struct usb_fifo *fifo)
1445 struct hfcsusb *hw = fifo->hw;
1449 for (i = 0; i < 2; i++) {
1450 spin_lock_irqsave(&hw->lock, flags);
1452 printk(KERN_DEBUG "%s: %s for fifo %i.%i\n",
1453 hw->name, __func__, fifo->fifonum, i);
1454 fifo->stop_gracefull = 1;
1455 spin_unlock_irqrestore(&hw->lock, flags);
1458 for (i = 0; i < 2; i++) {
1460 while (fifo->stop_gracefull && timeout--)
1461 schedule_timeout_interruptible((HZ / 1000) * 16);
1462 if (debug && fifo->stop_gracefull)
1463 printk(KERN_DEBUG "%s: ERROR %s for fifo %i.%i\n",
1464 hw->name, __func__, fifo->fifonum, i);
1469 stop_int_gracefull(struct usb_fifo *fifo)
1471 struct hfcsusb *hw = fifo->hw;
1475 spin_lock_irqsave(&hw->lock, flags);
1477 printk(KERN_DEBUG "%s: %s for fifo %i\n",
1478 hw->name, __func__, fifo->fifonum);
1479 fifo->stop_gracefull = 1;
1480 spin_unlock_irqrestore(&hw->lock, flags);
1483 while (fifo->stop_gracefull && timeout--)
1484 schedule_timeout_interruptible((HZ / 1000) * 3);
1485 if (debug && fifo->stop_gracefull)
1486 printk(KERN_DEBUG "%s: ERROR %s for fifo %i\n",
1487 hw->name, __func__, fifo->fifonum);
1490 /* start the interrupt transfer for the given fifo */
1492 start_int_fifo(struct usb_fifo *fifo)
1494 struct hfcsusb *hw = fifo->hw;
1498 printk(KERN_DEBUG "%s: %s: INT IN fifo:%d\n",
1499 hw->name, __func__, fifo->fifonum);
1502 fifo->urb = usb_alloc_urb(0, GFP_KERNEL);
1506 usb_fill_int_urb(fifo->urb, fifo->hw->dev, fifo->pipe,
1507 fifo->buffer, fifo->usb_packet_maxlen,
1508 (usb_complete_t)rx_int_complete, fifo, fifo->intervall);
1510 fifo->stop_gracefull = 0;
1511 errcode = usb_submit_urb(fifo->urb, GFP_KERNEL);
1513 printk(KERN_DEBUG "%s: %s: submit URB: status:%i\n",
1514 hw->name, __func__, errcode);
1520 setPortMode(struct hfcsusb *hw)
1522 if (debug & DEBUG_HW)
1523 printk(KERN_DEBUG "%s: %s %s\n", hw->name, __func__,
1524 (hw->protocol == ISDN_P_TE_S0) ? "TE" : "NT");
1526 if (hw->protocol == ISDN_P_TE_S0) {
1527 write_reg(hw, HFCUSB_SCTRL, 0x40);
1528 write_reg(hw, HFCUSB_SCTRL_E, 0x00);
1529 write_reg(hw, HFCUSB_CLKDEL, CLKDEL_TE);
1530 write_reg(hw, HFCUSB_STATES, 3 | 0x10);
1531 write_reg(hw, HFCUSB_STATES, 3);
1533 write_reg(hw, HFCUSB_SCTRL, 0x44);
1534 write_reg(hw, HFCUSB_SCTRL_E, 0x09);
1535 write_reg(hw, HFCUSB_CLKDEL, CLKDEL_NT);
1536 write_reg(hw, HFCUSB_STATES, 1 | 0x10);
1537 write_reg(hw, HFCUSB_STATES, 1);
1542 reset_hfcsusb(struct hfcsusb *hw)
1544 struct usb_fifo *fifo;
1547 if (debug & DEBUG_HW)
1548 printk(KERN_DEBUG "%s: %s\n", hw->name, __func__);
1551 write_reg(hw, HFCUSB_CIRM, 8);
1553 /* aux = output, reset off */
1554 write_reg(hw, HFCUSB_CIRM, 0x10);
1556 /* set USB_SIZE to match the wMaxPacketSize for INT or BULK transfers */
1557 write_reg(hw, HFCUSB_USB_SIZE, (hw->packet_size / 8) |
1558 ((hw->packet_size / 8) << 4));
1560 /* set USB_SIZE_I to match the the wMaxPacketSize for ISO transfers */
1561 write_reg(hw, HFCUSB_USB_SIZE_I, hw->iso_packet_size);
1563 /* enable PCM/GCI master mode */
1564 write_reg(hw, HFCUSB_MST_MODE1, 0); /* set default values */
1565 write_reg(hw, HFCUSB_MST_MODE0, 1); /* enable master mode */
1567 /* init the fifos */
1568 write_reg(hw, HFCUSB_F_THRES,
1569 (HFCUSB_TX_THRESHOLD / 8) | ((HFCUSB_RX_THRESHOLD / 8) << 4));
1572 for (i = 0; i < HFCUSB_NUM_FIFOS; i++) {
1573 write_reg(hw, HFCUSB_FIFO, i); /* select the desired fifo */
1575 (i <= HFCUSB_B2_RX) ? MAX_BCH_SIZE : MAX_DFRAME_LEN;
1576 fifo[i].last_urblen = 0;
1578 /* set 2 bit for D- & E-channel */
1579 write_reg(hw, HFCUSB_HDLC_PAR, ((i <= HFCUSB_B2_RX) ? 0 : 2));
1581 /* enable all fifos */
1582 if (i == HFCUSB_D_TX)
1583 write_reg(hw, HFCUSB_CON_HDLC,
1584 (hw->protocol == ISDN_P_NT_S0) ? 0x08 : 0x09);
1586 write_reg(hw, HFCUSB_CON_HDLC, 0x08);
1587 write_reg(hw, HFCUSB_INC_RES_F, 2); /* reset the fifo */
1590 write_reg(hw, HFCUSB_SCTRL_R, 0); /* disable both B receivers */
1591 handle_led(hw, LED_POWER_ON);
1594 /* start USB data pipes dependand on device's endpoint configuration */
1596 hfcsusb_start_endpoint(struct hfcsusb *hw, int channel)
1598 /* quick check if endpoint already running */
1599 if ((channel == HFC_CHAN_D) && (hw->fifos[HFCUSB_D_RX].active))
1601 if ((channel == HFC_CHAN_B1) && (hw->fifos[HFCUSB_B1_RX].active))
1603 if ((channel == HFC_CHAN_B2) && (hw->fifos[HFCUSB_B2_RX].active))
1605 if ((channel == HFC_CHAN_E) && (hw->fifos[HFCUSB_PCM_RX].active))
1608 /* start rx endpoints using USB INT IN method */
1609 if (hw->cfg_used == CNF_3INT3ISO || hw->cfg_used == CNF_4INT3ISO)
1610 start_int_fifo(hw->fifos + channel * 2 + 1);
1612 /* start rx endpoints using USB ISO IN method */
1613 if (hw->cfg_used == CNF_3ISO3ISO || hw->cfg_used == CNF_4ISO3ISO) {
1616 start_isoc_chain(hw->fifos + HFCUSB_D_RX,
1618 (usb_complete_t)rx_iso_complete,
1622 start_isoc_chain(hw->fifos + HFCUSB_PCM_RX,
1624 (usb_complete_t)rx_iso_complete,
1628 start_isoc_chain(hw->fifos + HFCUSB_B1_RX,
1630 (usb_complete_t)rx_iso_complete,
1634 start_isoc_chain(hw->fifos + HFCUSB_B2_RX,
1636 (usb_complete_t)rx_iso_complete,
1642 /* start tx endpoints using USB ISO OUT method */
1645 start_isoc_chain(hw->fifos + HFCUSB_D_TX,
1647 (usb_complete_t)tx_iso_complete, 1);
1650 start_isoc_chain(hw->fifos + HFCUSB_B1_TX,
1652 (usb_complete_t)tx_iso_complete, 1);
1655 start_isoc_chain(hw->fifos + HFCUSB_B2_TX,
1657 (usb_complete_t)tx_iso_complete, 1);
1662 /* stop USB data pipes dependand on device's endpoint configuration */
1664 hfcsusb_stop_endpoint(struct hfcsusb *hw, int channel)
1666 /* quick check if endpoint currently running */
1667 if ((channel == HFC_CHAN_D) && (!hw->fifos[HFCUSB_D_RX].active))
1669 if ((channel == HFC_CHAN_B1) && (!hw->fifos[HFCUSB_B1_RX].active))
1671 if ((channel == HFC_CHAN_B2) && (!hw->fifos[HFCUSB_B2_RX].active))
1673 if ((channel == HFC_CHAN_E) && (!hw->fifos[HFCUSB_PCM_RX].active))
1676 /* rx endpoints using USB INT IN method */
1677 if (hw->cfg_used == CNF_3INT3ISO || hw->cfg_used == CNF_4INT3ISO)
1678 stop_int_gracefull(hw->fifos + channel * 2 + 1);
1680 /* rx endpoints using USB ISO IN method */
1681 if (hw->cfg_used == CNF_3ISO3ISO || hw->cfg_used == CNF_4ISO3ISO)
1682 stop_iso_gracefull(hw->fifos + channel * 2 + 1);
1684 /* tx endpoints using USB ISO OUT method */
1685 if (channel != HFC_CHAN_E)
1686 stop_iso_gracefull(hw->fifos + channel * 2);
1690 /* Hardware Initialization */
1692 setup_hfcsusb(struct hfcsusb *hw)
1694 void *dmabuf = kmalloc(sizeof(u_char), GFP_KERNEL);
1698 if (debug & DBG_HFC_CALL_TRACE)
1699 printk(KERN_DEBUG "%s: %s\n", hw->name, __func__);
1704 ret = read_reg_atomic(hw, HFCUSB_CHIP_ID, dmabuf);
1706 memcpy(&b, dmabuf, sizeof(u_char));
1709 /* check the chip id */
1711 printk(KERN_DEBUG "%s: %s: cannot read chip id\n",
1712 hw->name, __func__);
1715 if (b != HFCUSB_CHIPID) {
1716 printk(KERN_DEBUG "%s: %s: Invalid chip id 0x%02x\n",
1717 hw->name, __func__, b);
1721 /* first set the needed config, interface and alternate */
1722 (void) usb_set_interface(hw->dev, hw->if_used, hw->alt_used);
1726 /* init the background machinery for control requests */
1727 hw->ctrl_read.bRequestType = 0xc0;
1728 hw->ctrl_read.bRequest = 1;
1729 hw->ctrl_read.wLength = cpu_to_le16(1);
1730 hw->ctrl_write.bRequestType = 0x40;
1731 hw->ctrl_write.bRequest = 0;
1732 hw->ctrl_write.wLength = 0;
1733 usb_fill_control_urb(hw->ctrl_urb, hw->dev, hw->ctrl_out_pipe,
1734 (u_char *)&hw->ctrl_write, NULL, 0,
1735 (usb_complete_t)ctrl_complete, hw);
1742 release_hw(struct hfcsusb *hw)
1744 if (debug & DBG_HFC_CALL_TRACE)
1745 printk(KERN_DEBUG "%s: %s\n", hw->name, __func__);
1748 * stop all endpoints gracefully
1749 * TODO: mISDN_core should generate CLOSE_CHANNEL
1750 * signals after calling mISDN_unregister_device()
1752 hfcsusb_stop_endpoint(hw, HFC_CHAN_D);
1753 hfcsusb_stop_endpoint(hw, HFC_CHAN_B1);
1754 hfcsusb_stop_endpoint(hw, HFC_CHAN_B2);
1755 if (hw->fifos[HFCUSB_PCM_RX].pipe)
1756 hfcsusb_stop_endpoint(hw, HFC_CHAN_E);
1757 if (hw->protocol == ISDN_P_TE_S0)
1758 l1_event(hw->dch.l1, CLOSE_CHANNEL);
1760 mISDN_unregister_device(&hw->dch.dev);
1761 mISDN_freebchannel(&hw->bch[1]);
1762 mISDN_freebchannel(&hw->bch[0]);
1763 mISDN_freedchannel(&hw->dch);
1766 usb_kill_urb(hw->ctrl_urb);
1767 usb_free_urb(hw->ctrl_urb);
1768 hw->ctrl_urb = NULL;
1772 usb_set_intfdata(hw->intf, NULL);
1773 list_del(&hw->list);
1779 deactivate_bchannel(struct bchannel *bch)
1781 struct hfcsusb *hw = bch->hw;
1784 if (bch->debug & DEBUG_HW)
1785 printk(KERN_DEBUG "%s: %s: bch->nr(%i)\n",
1786 hw->name, __func__, bch->nr);
1788 spin_lock_irqsave(&hw->lock, flags);
1789 mISDN_clear_bchannel(bch);
1790 spin_unlock_irqrestore(&hw->lock, flags);
1791 hfcsusb_setup_bch(bch, ISDN_P_NONE);
1792 hfcsusb_stop_endpoint(hw, bch->nr - 1);
1796 * Layer 1 B-channel hardware access
1799 hfc_bctrl(struct mISDNchannel *ch, u_int cmd, void *arg)
1801 struct bchannel *bch = container_of(ch, struct bchannel, ch);
1804 if (bch->debug & DEBUG_HW)
1805 printk(KERN_DEBUG "%s: cmd:%x %p\n", __func__, cmd, arg);
1809 case HW_TESTRX_HDLC:
1815 test_and_clear_bit(FLG_OPEN, &bch->Flags);
1816 deactivate_bchannel(bch);
1817 ch->protocol = ISDN_P_NONE;
1819 module_put(THIS_MODULE);
1822 case CONTROL_CHANNEL:
1823 ret = channel_bctrl(bch, arg);
1826 printk(KERN_WARNING "%s: unknown prim(%x)\n",
1833 setup_instance(struct hfcsusb *hw, struct device *parent)
1838 if (debug & DBG_HFC_CALL_TRACE)
1839 printk(KERN_DEBUG "%s: %s\n", hw->name, __func__);
1841 spin_lock_init(&hw->ctrl_lock);
1842 spin_lock_init(&hw->lock);
1844 mISDN_initdchannel(&hw->dch, MAX_DFRAME_LEN_L1, ph_state);
1845 hw->dch.debug = debug & 0xFFFF;
1847 hw->dch.dev.Dprotocols = (1 << ISDN_P_TE_S0) | (1 << ISDN_P_NT_S0);
1848 hw->dch.dev.D.send = hfcusb_l2l1D;
1849 hw->dch.dev.D.ctrl = hfc_dctrl;
1851 /* enable E-Channel logging */
1852 if (hw->fifos[HFCUSB_PCM_RX].pipe)
1853 mISDN_initdchannel(&hw->ech, MAX_DFRAME_LEN_L1, NULL);
1855 hw->dch.dev.Bprotocols = (1 << (ISDN_P_B_RAW & ISDN_P_B_MASK)) |
1856 (1 << (ISDN_P_B_HDLC & ISDN_P_B_MASK));
1857 hw->dch.dev.nrbchan = 2;
1858 for (i = 0; i < 2; i++) {
1859 hw->bch[i].nr = i + 1;
1860 set_channelmap(i + 1, hw->dch.dev.channelmap);
1861 hw->bch[i].debug = debug;
1862 mISDN_initbchannel(&hw->bch[i], MAX_DATA_MEM, poll >> 1);
1864 hw->bch[i].ch.send = hfcusb_l2l1B;
1865 hw->bch[i].ch.ctrl = hfc_bctrl;
1866 hw->bch[i].ch.nr = i + 1;
1867 list_add(&hw->bch[i].ch.list, &hw->dch.dev.bchannels);
1870 hw->fifos[HFCUSB_B1_TX].bch = &hw->bch[0];
1871 hw->fifos[HFCUSB_B1_RX].bch = &hw->bch[0];
1872 hw->fifos[HFCUSB_B2_TX].bch = &hw->bch[1];
1873 hw->fifos[HFCUSB_B2_RX].bch = &hw->bch[1];
1874 hw->fifos[HFCUSB_D_TX].dch = &hw->dch;
1875 hw->fifos[HFCUSB_D_RX].dch = &hw->dch;
1876 hw->fifos[HFCUSB_PCM_RX].ech = &hw->ech;
1877 hw->fifos[HFCUSB_PCM_TX].ech = &hw->ech;
1879 err = setup_hfcsusb(hw);
1883 snprintf(hw->name, MISDN_MAX_IDLEN - 1, "%s.%d", DRIVER_NAME,
1885 printk(KERN_INFO "%s: registered as '%s'\n",
1886 DRIVER_NAME, hw->name);
1888 err = mISDN_register_device(&hw->dch.dev, parent, hw->name);
1893 write_lock_irqsave(&HFClock, flags);
1894 list_add_tail(&hw->list, &HFClist);
1895 write_unlock_irqrestore(&HFClock, flags);
1899 mISDN_freebchannel(&hw->bch[1]);
1900 mISDN_freebchannel(&hw->bch[0]);
1901 mISDN_freedchannel(&hw->dch);
1907 hfcsusb_probe(struct usb_interface *intf, const struct usb_device_id *id)
1910 struct usb_device *dev = interface_to_usbdev(intf);
1911 struct usb_host_interface *iface = intf->cur_altsetting;
1912 struct usb_host_interface *iface_used = NULL;
1913 struct usb_host_endpoint *ep;
1914 struct hfcsusb_vdata *driver_info;
1915 int ifnum = iface->desc.bInterfaceNumber, i, idx, alt_idx,
1916 probe_alt_setting, vend_idx, cfg_used, *vcf, attr, cfg_found,
1917 ep_addr, cmptbl[16], small_match, iso_packet_size, packet_size,
1921 for (i = 0; hfcsusb_idtab[i].idVendor; i++) {
1922 if ((le16_to_cpu(dev->descriptor.idVendor)
1923 == hfcsusb_idtab[i].idVendor) &&
1924 (le16_to_cpu(dev->descriptor.idProduct)
1925 == hfcsusb_idtab[i].idProduct)) {
1932 "%s: interface(%d) actalt(%d) minor(%d) vend_idx(%d)\n",
1933 __func__, ifnum, iface->desc.bAlternateSetting,
1934 intf->minor, vend_idx);
1936 if (vend_idx == 0xffff) {
1938 "%s: no valid vendor found in USB descriptor\n",
1942 /* if vendor and product ID is OK, start probing alternate settings */
1946 /* default settings */
1947 iso_packet_size = 16;
1950 while (alt_idx < intf->num_altsetting) {
1951 iface = intf->altsetting + alt_idx;
1952 probe_alt_setting = iface->desc.bAlternateSetting;
1955 while (validconf[cfg_used][0]) {
1957 vcf = validconf[cfg_used];
1958 ep = iface->endpoint;
1959 memcpy(cmptbl, vcf, 16 * sizeof(int));
1961 /* check for all endpoints in this alternate setting */
1962 for (i = 0; i < iface->desc.bNumEndpoints; i++) {
1963 ep_addr = ep->desc.bEndpointAddress;
1965 /* get endpoint base */
1966 idx = ((ep_addr & 0x7f) - 1) * 2;
1972 attr = ep->desc.bmAttributes;
1974 if (cmptbl[idx] != EP_NOP) {
1975 if (cmptbl[idx] == EP_NUL)
1977 if (attr == USB_ENDPOINT_XFER_INT
1978 && cmptbl[idx] == EP_INT)
1979 cmptbl[idx] = EP_NUL;
1980 if (attr == USB_ENDPOINT_XFER_BULK
1981 && cmptbl[idx] == EP_BLK)
1982 cmptbl[idx] = EP_NUL;
1983 if (attr == USB_ENDPOINT_XFER_ISOC
1984 && cmptbl[idx] == EP_ISO)
1985 cmptbl[idx] = EP_NUL;
1987 if (attr == USB_ENDPOINT_XFER_INT &&
1988 ep->desc.bInterval < vcf[17]) {
1995 for (i = 0; i < 16; i++)
1996 if (cmptbl[i] != EP_NOP && cmptbl[i] != EP_NUL)
2000 if (small_match < cfg_used) {
2001 small_match = cfg_used;
2002 alt_used = probe_alt_setting;
2009 } /* (alt_idx < intf->num_altsetting) */
2011 /* not found a valid USB Ta Endpoint config */
2012 if (small_match == -1)
2016 hw = kzalloc(sizeof(struct hfcsusb), GFP_KERNEL);
2018 return -ENOMEM; /* got no mem */
2019 snprintf(hw->name, MISDN_MAX_IDLEN - 1, "%s", DRIVER_NAME);
2021 ep = iface->endpoint;
2022 vcf = validconf[small_match];
2024 for (i = 0; i < iface->desc.bNumEndpoints; i++) {
2027 ep_addr = ep->desc.bEndpointAddress;
2028 /* get endpoint base */
2029 idx = ((ep_addr & 0x7f) - 1) * 2;
2032 f = &hw->fifos[idx & 7];
2034 /* init Endpoints */
2035 if (vcf[idx] == EP_NOP || vcf[idx] == EP_NUL) {
2039 switch (ep->desc.bmAttributes) {
2040 case USB_ENDPOINT_XFER_INT:
2041 f->pipe = usb_rcvintpipe(dev,
2042 ep->desc.bEndpointAddress);
2043 f->usb_transfer_mode = USB_INT;
2044 packet_size = le16_to_cpu(ep->desc.wMaxPacketSize);
2046 case USB_ENDPOINT_XFER_BULK:
2048 f->pipe = usb_rcvbulkpipe(dev,
2049 ep->desc.bEndpointAddress);
2051 f->pipe = usb_sndbulkpipe(dev,
2052 ep->desc.bEndpointAddress);
2053 f->usb_transfer_mode = USB_BULK;
2054 packet_size = le16_to_cpu(ep->desc.wMaxPacketSize);
2056 case USB_ENDPOINT_XFER_ISOC:
2058 f->pipe = usb_rcvisocpipe(dev,
2059 ep->desc.bEndpointAddress);
2061 f->pipe = usb_sndisocpipe(dev,
2062 ep->desc.bEndpointAddress);
2063 f->usb_transfer_mode = USB_ISOC;
2064 iso_packet_size = le16_to_cpu(ep->desc.wMaxPacketSize);
2071 f->fifonum = idx & 7;
2073 f->usb_packet_maxlen =
2074 le16_to_cpu(ep->desc.wMaxPacketSize);
2075 f->intervall = ep->desc.bInterval;
2079 hw->dev = dev; /* save device */
2080 hw->if_used = ifnum; /* save used interface */
2081 hw->alt_used = alt_used; /* and alternate config */
2082 hw->ctrl_paksize = dev->descriptor.bMaxPacketSize0; /* control size */
2083 hw->cfg_used = vcf[16]; /* store used config */
2084 hw->vend_idx = vend_idx; /* store found vendor */
2085 hw->packet_size = packet_size;
2086 hw->iso_packet_size = iso_packet_size;
2088 /* create the control pipes needed for register access */
2089 hw->ctrl_in_pipe = usb_rcvctrlpipe(hw->dev, 0);
2090 hw->ctrl_out_pipe = usb_sndctrlpipe(hw->dev, 0);
2092 driver_info = (struct hfcsusb_vdata *)
2093 hfcsusb_idtab[vend_idx].driver_info;
2095 hw->ctrl_urb = usb_alloc_urb(0, GFP_KERNEL);
2096 if (!hw->ctrl_urb) {
2097 pr_warn("%s: No memory for control urb\n",
2098 driver_info->vend_name);
2103 pr_info("%s: %s: detected \"%s\" (%s, if=%d alt=%d)\n",
2104 hw->name, __func__, driver_info->vend_name,
2105 conf_str[small_match], ifnum, alt_used);
2107 if (setup_instance(hw, dev->dev.parent))
2111 usb_set_intfdata(hw->intf, hw);
2115 /* function called when an active device is removed */
2117 hfcsusb_disconnect(struct usb_interface *intf)
2119 struct hfcsusb *hw = usb_get_intfdata(intf);
2120 struct hfcsusb *next;
2123 printk(KERN_INFO "%s: device disconnected\n", hw->name);
2125 handle_led(hw, LED_POWER_OFF);
2128 list_for_each_entry_safe(hw, next, &HFClist, list)
2133 usb_set_intfdata(intf, NULL);
2136 static struct usb_driver hfcsusb_drv = {
2137 .name = DRIVER_NAME,
2138 .id_table = hfcsusb_idtab,
2139 .probe = hfcsusb_probe,
2140 .disconnect = hfcsusb_disconnect,
2141 .disable_hub_initiated_lpm = 1,
2144 module_usb_driver(hfcsusb_drv);