1 | // SPDX-License-Identifier: GPL-2.0-or-later |
2 | /* hfcsusb.c |
3 | * mISDN driver for Colognechip HFC-S USB chip |
4 | * |
5 | * Copyright 2001 by Peter Sprenger (sprenger@moving-bytes.de) |
6 | * Copyright 2008 by Martin Bachem (info@bachem-it.com) |
7 | * |
8 | * module params |
9 | * debug=<n>, default=0, with n=0xHHHHGGGG |
10 | * H - l1 driver flags described in hfcsusb.h |
11 | * G - common mISDN debug flags described at mISDNhw.h |
12 | * |
13 | * poll=<n>, default 128 |
14 | * n : burst size of PH_DATA_IND at transparent rx data |
15 | * |
16 | * Revision: 0.3.3 (socket), 2008-11-05 |
17 | */ |
18 | |
19 | #include <linux/module.h> |
20 | #include <linux/delay.h> |
21 | #include <linux/usb.h> |
22 | #include <linux/mISDNhw.h> |
23 | #include <linux/slab.h> |
24 | #include "hfcsusb.h" |
25 | |
26 | static unsigned int debug; |
27 | static int poll = DEFAULT_TRANSP_BURST_SZ; |
28 | |
29 | static LIST_HEAD(HFClist); |
30 | static DEFINE_RWLOCK(HFClock); |
31 | |
32 | |
33 | MODULE_AUTHOR("Martin Bachem" ); |
34 | MODULE_LICENSE("GPL" ); |
35 | module_param(debug, uint, S_IRUGO | S_IWUSR); |
36 | module_param(poll, int, 0); |
37 | |
38 | static int hfcsusb_cnt; |
39 | |
40 | /* some function prototypes */ |
41 | static void hfcsusb_ph_command(struct hfcsusb *hw, u_char command); |
42 | static void release_hw(struct hfcsusb *hw); |
43 | static void reset_hfcsusb(struct hfcsusb *hw); |
44 | static void setPortMode(struct hfcsusb *hw); |
45 | static void hfcsusb_start_endpoint(struct hfcsusb *hw, int channel); |
46 | static void hfcsusb_stop_endpoint(struct hfcsusb *hw, int channel); |
47 | static int hfcsusb_setup_bch(struct bchannel *bch, int protocol); |
48 | static void deactivate_bchannel(struct bchannel *bch); |
49 | static int hfcsusb_ph_info(struct hfcsusb *hw); |
50 | |
51 | /* start next background transfer for control channel */ |
52 | static void |
53 | ctrl_start_transfer(struct hfcsusb *hw) |
54 | { |
55 | if (debug & DBG_HFC_CALL_TRACE) |
56 | printk(KERN_DEBUG "%s: %s\n" , hw->name, __func__); |
57 | |
58 | if (hw->ctrl_cnt) { |
59 | hw->ctrl_urb->pipe = hw->ctrl_out_pipe; |
60 | hw->ctrl_urb->setup_packet = (u_char *)&hw->ctrl_write; |
61 | hw->ctrl_urb->transfer_buffer = NULL; |
62 | hw->ctrl_urb->transfer_buffer_length = 0; |
63 | hw->ctrl_write.wIndex = |
64 | cpu_to_le16(hw->ctrl_buff[hw->ctrl_out_idx].hfcs_reg); |
65 | hw->ctrl_write.wValue = |
66 | cpu_to_le16(hw->ctrl_buff[hw->ctrl_out_idx].reg_val); |
67 | |
68 | usb_submit_urb(urb: hw->ctrl_urb, GFP_ATOMIC); |
69 | } |
70 | } |
71 | |
72 | /* |
73 | * queue a control transfer request to write HFC-S USB |
74 | * chip register using CTRL resuest queue |
75 | */ |
76 | static int write_reg(struct hfcsusb *hw, __u8 reg, __u8 val) |
77 | { |
78 | struct ctrl_buf *buf; |
79 | |
80 | if (debug & DBG_HFC_CALL_TRACE) |
81 | printk(KERN_DEBUG "%s: %s reg(0x%02x) val(0x%02x)\n" , |
82 | hw->name, __func__, reg, val); |
83 | |
84 | spin_lock(lock: &hw->ctrl_lock); |
85 | if (hw->ctrl_cnt >= HFC_CTRL_BUFSIZE) { |
86 | spin_unlock(lock: &hw->ctrl_lock); |
87 | return 1; |
88 | } |
89 | buf = &hw->ctrl_buff[hw->ctrl_in_idx]; |
90 | buf->hfcs_reg = reg; |
91 | buf->reg_val = val; |
92 | if (++hw->ctrl_in_idx >= HFC_CTRL_BUFSIZE) |
93 | hw->ctrl_in_idx = 0; |
94 | if (++hw->ctrl_cnt == 1) |
95 | ctrl_start_transfer(hw); |
96 | spin_unlock(lock: &hw->ctrl_lock); |
97 | |
98 | return 0; |
99 | } |
100 | |
101 | /* control completion routine handling background control cmds */ |
102 | static void |
103 | ctrl_complete(struct urb *urb) |
104 | { |
105 | struct hfcsusb *hw = (struct hfcsusb *) urb->context; |
106 | |
107 | if (debug & DBG_HFC_CALL_TRACE) |
108 | printk(KERN_DEBUG "%s: %s\n" , hw->name, __func__); |
109 | |
110 | urb->dev = hw->dev; |
111 | if (hw->ctrl_cnt) { |
112 | hw->ctrl_cnt--; /* decrement actual count */ |
113 | if (++hw->ctrl_out_idx >= HFC_CTRL_BUFSIZE) |
114 | hw->ctrl_out_idx = 0; /* pointer wrap */ |
115 | |
116 | ctrl_start_transfer(hw); /* start next transfer */ |
117 | } |
118 | } |
119 | |
120 | /* handle LED bits */ |
121 | static void |
122 | set_led_bit(struct hfcsusb *hw, signed short led_bits, int set_on) |
123 | { |
124 | if (set_on) { |
125 | if (led_bits < 0) |
126 | hw->led_state &= ~abs(led_bits); |
127 | else |
128 | hw->led_state |= led_bits; |
129 | } else { |
130 | if (led_bits < 0) |
131 | hw->led_state |= abs(led_bits); |
132 | else |
133 | hw->led_state &= ~led_bits; |
134 | } |
135 | } |
136 | |
137 | /* handle LED requests */ |
138 | static void |
139 | handle_led(struct hfcsusb *hw, int event) |
140 | { |
141 | struct hfcsusb_vdata *driver_info = (struct hfcsusb_vdata *) |
142 | hfcsusb_idtab[hw->vend_idx].driver_info; |
143 | __u8 tmpled; |
144 | |
145 | if (driver_info->led_scheme == LED_OFF) |
146 | return; |
147 | tmpled = hw->led_state; |
148 | |
149 | switch (event) { |
150 | case LED_POWER_ON: |
151 | set_led_bit(hw, led_bits: driver_info->led_bits[0], set_on: 1); |
152 | set_led_bit(hw, led_bits: driver_info->led_bits[1], set_on: 0); |
153 | set_led_bit(hw, led_bits: driver_info->led_bits[2], set_on: 0); |
154 | set_led_bit(hw, led_bits: driver_info->led_bits[3], set_on: 0); |
155 | break; |
156 | case LED_POWER_OFF: |
157 | set_led_bit(hw, led_bits: driver_info->led_bits[0], set_on: 0); |
158 | set_led_bit(hw, led_bits: driver_info->led_bits[1], set_on: 0); |
159 | set_led_bit(hw, led_bits: driver_info->led_bits[2], set_on: 0); |
160 | set_led_bit(hw, led_bits: driver_info->led_bits[3], set_on: 0); |
161 | break; |
162 | case LED_S0_ON: |
163 | set_led_bit(hw, led_bits: driver_info->led_bits[1], set_on: 1); |
164 | break; |
165 | case LED_S0_OFF: |
166 | set_led_bit(hw, led_bits: driver_info->led_bits[1], set_on: 0); |
167 | break; |
168 | case LED_B1_ON: |
169 | set_led_bit(hw, led_bits: driver_info->led_bits[2], set_on: 1); |
170 | break; |
171 | case LED_B1_OFF: |
172 | set_led_bit(hw, led_bits: driver_info->led_bits[2], set_on: 0); |
173 | break; |
174 | case LED_B2_ON: |
175 | set_led_bit(hw, led_bits: driver_info->led_bits[3], set_on: 1); |
176 | break; |
177 | case LED_B2_OFF: |
178 | set_led_bit(hw, led_bits: driver_info->led_bits[3], set_on: 0); |
179 | break; |
180 | } |
181 | |
182 | if (hw->led_state != tmpled) { |
183 | if (debug & DBG_HFC_CALL_TRACE) |
184 | printk(KERN_DEBUG "%s: %s reg(0x%02x) val(x%02x)\n" , |
185 | hw->name, __func__, |
186 | HFCUSB_P_DATA, hw->led_state); |
187 | |
188 | write_reg(hw, HFCUSB_P_DATA, val: hw->led_state); |
189 | } |
190 | } |
191 | |
192 | /* |
193 | * Layer2 -> Layer 1 Bchannel data |
194 | */ |
195 | static int |
196 | hfcusb_l2l1B(struct mISDNchannel *ch, struct sk_buff *skb) |
197 | { |
198 | struct bchannel *bch = container_of(ch, struct bchannel, ch); |
199 | struct hfcsusb *hw = bch->hw; |
200 | int ret = -EINVAL; |
201 | struct mISDNhead *hh = mISDN_HEAD_P(skb); |
202 | u_long flags; |
203 | |
204 | if (debug & DBG_HFC_CALL_TRACE) |
205 | printk(KERN_DEBUG "%s: %s\n" , hw->name, __func__); |
206 | |
207 | switch (hh->prim) { |
208 | case PH_DATA_REQ: |
209 | spin_lock_irqsave(&hw->lock, flags); |
210 | ret = bchannel_senddata(bch, skb); |
211 | spin_unlock_irqrestore(lock: &hw->lock, flags); |
212 | if (debug & DBG_HFC_CALL_TRACE) |
213 | printk(KERN_DEBUG "%s: %s PH_DATA_REQ ret(%i)\n" , |
214 | hw->name, __func__, ret); |
215 | if (ret > 0) |
216 | ret = 0; |
217 | return ret; |
218 | case PH_ACTIVATE_REQ: |
219 | if (!test_and_set_bit(FLG_ACTIVE, addr: &bch->Flags)) { |
220 | hfcsusb_start_endpoint(hw, channel: bch->nr - 1); |
221 | ret = hfcsusb_setup_bch(bch, protocol: ch->protocol); |
222 | } else |
223 | ret = 0; |
224 | if (!ret) |
225 | _queue_data(ch, PH_ACTIVATE_IND, MISDN_ID_ANY, |
226 | len: 0, NULL, GFP_KERNEL); |
227 | break; |
228 | case PH_DEACTIVATE_REQ: |
229 | deactivate_bchannel(bch); |
230 | _queue_data(ch, PH_DEACTIVATE_IND, MISDN_ID_ANY, |
231 | len: 0, NULL, GFP_KERNEL); |
232 | ret = 0; |
233 | break; |
234 | } |
235 | if (!ret) |
236 | dev_kfree_skb(skb); |
237 | return ret; |
238 | } |
239 | |
240 | /* |
241 | * send full D/B channel status information |
242 | * as MPH_INFORMATION_IND |
243 | */ |
244 | static int |
245 | hfcsusb_ph_info(struct hfcsusb *hw) |
246 | { |
247 | struct ph_info *phi; |
248 | struct dchannel *dch = &hw->dch; |
249 | int i; |
250 | |
251 | phi = kzalloc(struct_size(phi, bch, dch->dev.nrbchan), GFP_ATOMIC); |
252 | if (!phi) |
253 | return -ENOMEM; |
254 | |
255 | phi->dch.ch.protocol = hw->protocol; |
256 | phi->dch.ch.Flags = dch->Flags; |
257 | phi->dch.state = dch->state; |
258 | phi->dch.num_bch = dch->dev.nrbchan; |
259 | for (i = 0; i < dch->dev.nrbchan; i++) { |
260 | phi->bch[i].protocol = hw->bch[i].ch.protocol; |
261 | phi->bch[i].Flags = hw->bch[i].Flags; |
262 | } |
263 | _queue_data(ch: &dch->dev.D, MPH_INFORMATION_IND, MISDN_ID_ANY, |
264 | struct_size(phi, bch, dch->dev.nrbchan), dp: phi, GFP_ATOMIC); |
265 | kfree(objp: phi); |
266 | |
267 | return 0; |
268 | } |
269 | |
270 | /* |
271 | * Layer2 -> Layer 1 Dchannel data |
272 | */ |
273 | static int |
274 | hfcusb_l2l1D(struct mISDNchannel *ch, struct sk_buff *skb) |
275 | { |
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; |
280 | int ret = -EINVAL; |
281 | u_long flags; |
282 | |
283 | switch (hh->prim) { |
284 | case PH_DATA_REQ: |
285 | if (debug & DBG_HFC_CALL_TRACE) |
286 | printk(KERN_DEBUG "%s: %s: PH_DATA_REQ\n" , |
287 | hw->name, __func__); |
288 | |
289 | spin_lock_irqsave(&hw->lock, flags); |
290 | ret = dchannel_senddata(dch, skb); |
291 | spin_unlock_irqrestore(lock: &hw->lock, flags); |
292 | if (ret > 0) { |
293 | ret = 0; |
294 | queue_ch_frame(ch, PH_DATA_CNF, hh->id, NULL); |
295 | } |
296 | break; |
297 | |
298 | case PH_ACTIVATE_REQ: |
299 | if (debug & DBG_HFC_CALL_TRACE) |
300 | printk(KERN_DEBUG "%s: %s: PH_ACTIVATE_REQ %s\n" , |
301 | hw->name, __func__, |
302 | (hw->protocol == ISDN_P_NT_S0) ? "NT" : "TE" ); |
303 | |
304 | if (hw->protocol == ISDN_P_NT_S0) { |
305 | ret = 0; |
306 | if (test_bit(FLG_ACTIVE, &dch->Flags)) { |
307 | _queue_data(ch: &dch->dev.D, |
308 | PH_ACTIVATE_IND, MISDN_ID_ANY, len: 0, |
309 | NULL, GFP_ATOMIC); |
310 | } else { |
311 | hfcsusb_ph_command(hw, |
312 | HFC_L1_ACTIVATE_NT); |
313 | test_and_set_bit(FLG_L2_ACTIVATED, |
314 | addr: &dch->Flags); |
315 | } |
316 | } else { |
317 | hfcsusb_ph_command(hw, HFC_L1_ACTIVATE_TE); |
318 | ret = l1_event(dch->l1, hh->prim); |
319 | } |
320 | break; |
321 | |
322 | case PH_DEACTIVATE_REQ: |
323 | if (debug & DBG_HFC_CALL_TRACE) |
324 | printk(KERN_DEBUG "%s: %s: PH_DEACTIVATE_REQ\n" , |
325 | hw->name, __func__); |
326 | test_and_clear_bit(FLG_L2_ACTIVATED, addr: &dch->Flags); |
327 | |
328 | if (hw->protocol == ISDN_P_NT_S0) { |
329 | struct sk_buff_head free_queue; |
330 | |
331 | __skb_queue_head_init(list: &free_queue); |
332 | hfcsusb_ph_command(hw, HFC_L1_DEACTIVATE_NT); |
333 | spin_lock_irqsave(&hw->lock, flags); |
334 | skb_queue_splice_init(list: &dch->squeue, head: &free_queue); |
335 | if (dch->tx_skb) { |
336 | __skb_queue_tail(list: &free_queue, newsk: dch->tx_skb); |
337 | dch->tx_skb = NULL; |
338 | } |
339 | dch->tx_idx = 0; |
340 | if (dch->rx_skb) { |
341 | __skb_queue_tail(list: &free_queue, newsk: dch->rx_skb); |
342 | dch->rx_skb = NULL; |
343 | } |
344 | test_and_clear_bit(FLG_TX_BUSY, addr: &dch->Flags); |
345 | spin_unlock_irqrestore(lock: &hw->lock, flags); |
346 | __skb_queue_purge(list: &free_queue); |
347 | #ifdef FIXME |
348 | if (test_and_clear_bit(FLG_L1_BUSY, &dch->Flags)) |
349 | dchannel_sched_event(&hc->dch, D_CLEARBUSY); |
350 | #endif |
351 | ret = 0; |
352 | } else |
353 | ret = l1_event(dch->l1, hh->prim); |
354 | break; |
355 | case MPH_INFORMATION_REQ: |
356 | ret = hfcsusb_ph_info(hw); |
357 | break; |
358 | } |
359 | |
360 | return ret; |
361 | } |
362 | |
363 | /* |
364 | * Layer 1 callback function |
365 | */ |
366 | static int |
367 | hfc_l1callback(struct dchannel *dch, u_int cmd) |
368 | { |
369 | struct hfcsusb *hw = dch->hw; |
370 | |
371 | if (debug & DBG_HFC_CALL_TRACE) |
372 | printk(KERN_DEBUG "%s: %s cmd 0x%x\n" , |
373 | hw->name, __func__, cmd); |
374 | |
375 | switch (cmd) { |
376 | case INFO3_P8: |
377 | case INFO3_P10: |
378 | case HW_RESET_REQ: |
379 | case HW_POWERUP_REQ: |
380 | break; |
381 | |
382 | case HW_DEACT_REQ: |
383 | skb_queue_purge(list: &dch->squeue); |
384 | if (dch->tx_skb) { |
385 | dev_kfree_skb(dch->tx_skb); |
386 | dch->tx_skb = NULL; |
387 | } |
388 | dch->tx_idx = 0; |
389 | if (dch->rx_skb) { |
390 | dev_kfree_skb(dch->rx_skb); |
391 | dch->rx_skb = NULL; |
392 | } |
393 | test_and_clear_bit(FLG_TX_BUSY, addr: &dch->Flags); |
394 | break; |
395 | case PH_ACTIVATE_IND: |
396 | test_and_set_bit(FLG_ACTIVE, addr: &dch->Flags); |
397 | _queue_data(ch: &dch->dev.D, prim: cmd, MISDN_ID_ANY, len: 0, NULL, |
398 | GFP_ATOMIC); |
399 | break; |
400 | case PH_DEACTIVATE_IND: |
401 | test_and_clear_bit(FLG_ACTIVE, addr: &dch->Flags); |
402 | _queue_data(ch: &dch->dev.D, prim: cmd, MISDN_ID_ANY, len: 0, NULL, |
403 | GFP_ATOMIC); |
404 | break; |
405 | default: |
406 | if (dch->debug & DEBUG_HW) |
407 | printk(KERN_DEBUG "%s: %s: unknown cmd %x\n" , |
408 | hw->name, __func__, cmd); |
409 | return -1; |
410 | } |
411 | return hfcsusb_ph_info(hw); |
412 | } |
413 | |
414 | static int |
415 | open_dchannel(struct hfcsusb *hw, struct mISDNchannel *ch, |
416 | struct channel_req *rq) |
417 | { |
418 | int err = 0; |
419 | |
420 | if (debug & DEBUG_HW_OPEN) |
421 | printk(KERN_DEBUG "%s: %s: dev(%d) open addr(%i) from %p\n" , |
422 | hw->name, __func__, hw->dch.dev.id, rq->adr.channel, |
423 | __builtin_return_address(0)); |
424 | if (rq->protocol == ISDN_P_NONE) |
425 | return -EINVAL; |
426 | |
427 | test_and_clear_bit(FLG_ACTIVE, addr: &hw->dch.Flags); |
428 | test_and_clear_bit(FLG_ACTIVE, addr: &hw->ech.Flags); |
429 | hfcsusb_start_endpoint(hw, HFC_CHAN_D); |
430 | |
431 | /* E-Channel logging */ |
432 | if (rq->adr.channel == 1) { |
433 | if (hw->fifos[HFCUSB_PCM_RX].pipe) { |
434 | hfcsusb_start_endpoint(hw, HFC_CHAN_E); |
435 | set_bit(FLG_ACTIVE, addr: &hw->ech.Flags); |
436 | _queue_data(ch: &hw->ech.dev.D, PH_ACTIVATE_IND, |
437 | MISDN_ID_ANY, len: 0, NULL, GFP_ATOMIC); |
438 | } else |
439 | return -EINVAL; |
440 | } |
441 | |
442 | if (!hw->initdone) { |
443 | hw->protocol = rq->protocol; |
444 | if (rq->protocol == ISDN_P_TE_S0) { |
445 | err = create_l1(&hw->dch, hfc_l1callback); |
446 | if (err) |
447 | return err; |
448 | } |
449 | setPortMode(hw); |
450 | ch->protocol = rq->protocol; |
451 | hw->initdone = 1; |
452 | } else { |
453 | if (rq->protocol != ch->protocol) |
454 | return -EPROTONOSUPPORT; |
455 | } |
456 | |
457 | if (((ch->protocol == ISDN_P_NT_S0) && (hw->dch.state == 3)) || |
458 | ((ch->protocol == ISDN_P_TE_S0) && (hw->dch.state == 7))) |
459 | _queue_data(ch, PH_ACTIVATE_IND, MISDN_ID_ANY, |
460 | len: 0, NULL, GFP_KERNEL); |
461 | rq->ch = ch; |
462 | if (!try_module_get(THIS_MODULE)) |
463 | printk(KERN_WARNING "%s: %s: cannot get module\n" , |
464 | hw->name, __func__); |
465 | return 0; |
466 | } |
467 | |
468 | static int |
469 | open_bchannel(struct hfcsusb *hw, struct channel_req *rq) |
470 | { |
471 | struct bchannel *bch; |
472 | |
473 | if (rq->adr.channel == 0 || rq->adr.channel > 2) |
474 | return -EINVAL; |
475 | if (rq->protocol == ISDN_P_NONE) |
476 | return -EINVAL; |
477 | |
478 | if (debug & DBG_HFC_CALL_TRACE) |
479 | printk(KERN_DEBUG "%s: %s B%i\n" , |
480 | hw->name, __func__, rq->adr.channel); |
481 | |
482 | bch = &hw->bch[rq->adr.channel - 1]; |
483 | if (test_and_set_bit(FLG_OPEN, addr: &bch->Flags)) |
484 | return -EBUSY; /* b-channel can be only open once */ |
485 | bch->ch.protocol = rq->protocol; |
486 | rq->ch = &bch->ch; |
487 | |
488 | if (!try_module_get(THIS_MODULE)) |
489 | printk(KERN_WARNING "%s: %s:cannot get module\n" , |
490 | hw->name, __func__); |
491 | return 0; |
492 | } |
493 | |
494 | static int |
495 | channel_ctrl(struct hfcsusb *hw, struct mISDN_ctrl_req *cq) |
496 | { |
497 | int ret = 0; |
498 | |
499 | if (debug & DBG_HFC_CALL_TRACE) |
500 | printk(KERN_DEBUG "%s: %s op(0x%x) channel(0x%x)\n" , |
501 | hw->name, __func__, (cq->op), (cq->channel)); |
502 | |
503 | switch (cq->op) { |
504 | case MISDN_CTRL_GETOP: |
505 | cq->op = MISDN_CTRL_LOOP | MISDN_CTRL_CONNECT | |
506 | MISDN_CTRL_DISCONNECT; |
507 | break; |
508 | default: |
509 | printk(KERN_WARNING "%s: %s: unknown Op %x\n" , |
510 | hw->name, __func__, cq->op); |
511 | ret = -EINVAL; |
512 | break; |
513 | } |
514 | return ret; |
515 | } |
516 | |
517 | /* |
518 | * device control function |
519 | */ |
520 | static int |
521 | hfc_dctrl(struct mISDNchannel *ch, u_int cmd, void *arg) |
522 | { |
523 | struct mISDNdevice *dev = container_of(ch, struct mISDNdevice, D); |
524 | struct dchannel *dch = container_of(dev, struct dchannel, dev); |
525 | struct hfcsusb *hw = dch->hw; |
526 | struct channel_req *rq; |
527 | int err = 0; |
528 | |
529 | if (dch->debug & DEBUG_HW) |
530 | printk(KERN_DEBUG "%s: %s: cmd:%x %p\n" , |
531 | hw->name, __func__, cmd, arg); |
532 | switch (cmd) { |
533 | case OPEN_CHANNEL: |
534 | rq = arg; |
535 | if ((rq->protocol == ISDN_P_TE_S0) || |
536 | (rq->protocol == ISDN_P_NT_S0)) |
537 | err = open_dchannel(hw, ch, rq); |
538 | else |
539 | err = open_bchannel(hw, rq); |
540 | if (!err) |
541 | hw->open++; |
542 | break; |
543 | case CLOSE_CHANNEL: |
544 | hw->open--; |
545 | if (debug & DEBUG_HW_OPEN) |
546 | printk(KERN_DEBUG |
547 | "%s: %s: dev(%d) close from %p (open %d)\n" , |
548 | hw->name, __func__, hw->dch.dev.id, |
549 | __builtin_return_address(0), hw->open); |
550 | if (!hw->open) { |
551 | hfcsusb_stop_endpoint(hw, HFC_CHAN_D); |
552 | if (hw->fifos[HFCUSB_PCM_RX].pipe) |
553 | hfcsusb_stop_endpoint(hw, HFC_CHAN_E); |
554 | handle_led(hw, LED_POWER_ON); |
555 | } |
556 | module_put(THIS_MODULE); |
557 | break; |
558 | case CONTROL_CHANNEL: |
559 | err = channel_ctrl(hw, cq: arg); |
560 | break; |
561 | default: |
562 | if (dch->debug & DEBUG_HW) |
563 | printk(KERN_DEBUG "%s: %s: unknown command %x\n" , |
564 | hw->name, __func__, cmd); |
565 | return -EINVAL; |
566 | } |
567 | return err; |
568 | } |
569 | |
570 | /* |
571 | * S0 TE state change event handler |
572 | */ |
573 | static void |
574 | ph_state_te(struct dchannel *dch) |
575 | { |
576 | struct hfcsusb *hw = dch->hw; |
577 | |
578 | if (debug & DEBUG_HW) { |
579 | if (dch->state <= HFC_MAX_TE_LAYER1_STATE) |
580 | printk(KERN_DEBUG "%s: %s: %s\n" , hw->name, __func__, |
581 | HFC_TE_LAYER1_STATES[dch->state]); |
582 | else |
583 | printk(KERN_DEBUG "%s: %s: TE F%d\n" , |
584 | hw->name, __func__, dch->state); |
585 | } |
586 | |
587 | switch (dch->state) { |
588 | case 0: |
589 | l1_event(dch->l1, HW_RESET_IND); |
590 | break; |
591 | case 3: |
592 | l1_event(dch->l1, HW_DEACT_IND); |
593 | break; |
594 | case 5: |
595 | case 8: |
596 | l1_event(dch->l1, ANYSIGNAL); |
597 | break; |
598 | case 6: |
599 | l1_event(dch->l1, INFO2); |
600 | break; |
601 | case 7: |
602 | l1_event(dch->l1, INFO4_P8); |
603 | break; |
604 | } |
605 | if (dch->state == 7) |
606 | handle_led(hw, LED_S0_ON); |
607 | else |
608 | handle_led(hw, LED_S0_OFF); |
609 | } |
610 | |
611 | /* |
612 | * S0 NT state change event handler |
613 | */ |
614 | static void |
615 | ph_state_nt(struct dchannel *dch) |
616 | { |
617 | struct hfcsusb *hw = dch->hw; |
618 | |
619 | if (debug & DEBUG_HW) { |
620 | if (dch->state <= HFC_MAX_NT_LAYER1_STATE) |
621 | printk(KERN_DEBUG "%s: %s: %s\n" , |
622 | hw->name, __func__, |
623 | HFC_NT_LAYER1_STATES[dch->state]); |
624 | |
625 | else |
626 | printk(KERN_INFO DRIVER_NAME "%s: %s: NT G%d\n" , |
627 | hw->name, __func__, dch->state); |
628 | } |
629 | |
630 | switch (dch->state) { |
631 | case (1): |
632 | test_and_clear_bit(FLG_ACTIVE, addr: &dch->Flags); |
633 | test_and_clear_bit(FLG_L2_ACTIVATED, addr: &dch->Flags); |
634 | hw->nt_timer = 0; |
635 | hw->timers &= ~NT_ACTIVATION_TIMER; |
636 | handle_led(hw, LED_S0_OFF); |
637 | break; |
638 | |
639 | case (2): |
640 | if (hw->nt_timer < 0) { |
641 | hw->nt_timer = 0; |
642 | hw->timers &= ~NT_ACTIVATION_TIMER; |
643 | hfcsusb_ph_command(hw: dch->hw, HFC_L1_DEACTIVATE_NT); |
644 | } else { |
645 | hw->timers |= NT_ACTIVATION_TIMER; |
646 | hw->nt_timer = NT_T1_COUNT; |
647 | /* allow G2 -> G3 transition */ |
648 | write_reg(hw, HFCUSB_STATES, val: 2 | HFCUSB_NT_G2_G3); |
649 | } |
650 | break; |
651 | case (3): |
652 | hw->nt_timer = 0; |
653 | hw->timers &= ~NT_ACTIVATION_TIMER; |
654 | test_and_set_bit(FLG_ACTIVE, addr: &dch->Flags); |
655 | _queue_data(ch: &dch->dev.D, PH_ACTIVATE_IND, |
656 | MISDN_ID_ANY, len: 0, NULL, GFP_ATOMIC); |
657 | handle_led(hw, LED_S0_ON); |
658 | break; |
659 | case (4): |
660 | hw->nt_timer = 0; |
661 | hw->timers &= ~NT_ACTIVATION_TIMER; |
662 | break; |
663 | default: |
664 | break; |
665 | } |
666 | hfcsusb_ph_info(hw); |
667 | } |
668 | |
669 | static void |
670 | ph_state(struct dchannel *dch) |
671 | { |
672 | struct hfcsusb *hw = dch->hw; |
673 | |
674 | if (hw->protocol == ISDN_P_NT_S0) |
675 | ph_state_nt(dch); |
676 | else if (hw->protocol == ISDN_P_TE_S0) |
677 | ph_state_te(dch); |
678 | } |
679 | |
680 | /* |
681 | * disable/enable BChannel for desired protocol |
682 | */ |
683 | static int |
684 | hfcsusb_setup_bch(struct bchannel *bch, int protocol) |
685 | { |
686 | struct hfcsusb *hw = bch->hw; |
687 | __u8 conhdlc, sctrl, sctrl_r; |
688 | |
689 | if (debug & DEBUG_HW) |
690 | printk(KERN_DEBUG "%s: %s: protocol %x-->%x B%d\n" , |
691 | hw->name, __func__, bch->state, protocol, |
692 | bch->nr); |
693 | |
694 | /* setup val for CON_HDLC */ |
695 | conhdlc = 0; |
696 | if (protocol > ISDN_P_NONE) |
697 | conhdlc = 8; /* enable FIFO */ |
698 | |
699 | switch (protocol) { |
700 | case (-1): /* used for init */ |
701 | bch->state = -1; |
702 | fallthrough; |
703 | case (ISDN_P_NONE): |
704 | if (bch->state == ISDN_P_NONE) |
705 | return 0; /* already in idle state */ |
706 | bch->state = ISDN_P_NONE; |
707 | clear_bit(FLG_HDLC, addr: &bch->Flags); |
708 | clear_bit(FLG_TRANSPARENT, addr: &bch->Flags); |
709 | break; |
710 | case (ISDN_P_B_RAW): |
711 | conhdlc |= 2; |
712 | bch->state = protocol; |
713 | set_bit(FLG_TRANSPARENT, addr: &bch->Flags); |
714 | break; |
715 | case (ISDN_P_B_HDLC): |
716 | bch->state = protocol; |
717 | set_bit(FLG_HDLC, addr: &bch->Flags); |
718 | break; |
719 | default: |
720 | if (debug & DEBUG_HW) |
721 | printk(KERN_DEBUG "%s: %s: prot not known %x\n" , |
722 | hw->name, __func__, protocol); |
723 | return -ENOPROTOOPT; |
724 | } |
725 | |
726 | if (protocol >= ISDN_P_NONE) { |
727 | write_reg(hw, HFCUSB_FIFO, val: (bch->nr == 1) ? 0 : 2); |
728 | write_reg(hw, HFCUSB_CON_HDLC, val: conhdlc); |
729 | write_reg(hw, HFCUSB_INC_RES_F, val: 2); |
730 | write_reg(hw, HFCUSB_FIFO, val: (bch->nr == 1) ? 1 : 3); |
731 | write_reg(hw, HFCUSB_CON_HDLC, val: conhdlc); |
732 | write_reg(hw, HFCUSB_INC_RES_F, val: 2); |
733 | |
734 | sctrl = 0x40 + ((hw->protocol == ISDN_P_TE_S0) ? 0x00 : 0x04); |
735 | sctrl_r = 0x0; |
736 | if (test_bit(FLG_ACTIVE, &hw->bch[0].Flags)) { |
737 | sctrl |= 1; |
738 | sctrl_r |= 1; |
739 | } |
740 | if (test_bit(FLG_ACTIVE, &hw->bch[1].Flags)) { |
741 | sctrl |= 2; |
742 | sctrl_r |= 2; |
743 | } |
744 | write_reg(hw, HFCUSB_SCTRL, val: sctrl); |
745 | write_reg(hw, HFCUSB_SCTRL_R, val: sctrl_r); |
746 | |
747 | if (protocol > ISDN_P_NONE) |
748 | handle_led(hw, event: (bch->nr == 1) ? LED_B1_ON : LED_B2_ON); |
749 | else |
750 | handle_led(hw, event: (bch->nr == 1) ? LED_B1_OFF : |
751 | LED_B2_OFF); |
752 | } |
753 | return hfcsusb_ph_info(hw); |
754 | } |
755 | |
756 | static void |
757 | hfcsusb_ph_command(struct hfcsusb *hw, u_char command) |
758 | { |
759 | if (debug & DEBUG_HW) |
760 | printk(KERN_DEBUG "%s: %s: %x\n" , |
761 | hw->name, __func__, command); |
762 | |
763 | switch (command) { |
764 | case HFC_L1_ACTIVATE_TE: |
765 | /* force sending sending INFO1 */ |
766 | write_reg(hw, HFCUSB_STATES, val: 0x14); |
767 | /* start l1 activation */ |
768 | write_reg(hw, HFCUSB_STATES, val: 0x04); |
769 | break; |
770 | |
771 | case HFC_L1_FORCE_DEACTIVATE_TE: |
772 | write_reg(hw, HFCUSB_STATES, val: 0x10); |
773 | write_reg(hw, HFCUSB_STATES, val: 0x03); |
774 | break; |
775 | |
776 | case HFC_L1_ACTIVATE_NT: |
777 | if (hw->dch.state == 3) |
778 | _queue_data(ch: &hw->dch.dev.D, PH_ACTIVATE_IND, |
779 | MISDN_ID_ANY, len: 0, NULL, GFP_ATOMIC); |
780 | else |
781 | write_reg(hw, HFCUSB_STATES, HFCUSB_ACTIVATE | |
782 | HFCUSB_DO_ACTION | HFCUSB_NT_G2_G3); |
783 | break; |
784 | |
785 | case HFC_L1_DEACTIVATE_NT: |
786 | write_reg(hw, HFCUSB_STATES, |
787 | HFCUSB_DO_ACTION); |
788 | break; |
789 | } |
790 | } |
791 | |
792 | /* |
793 | * Layer 1 B-channel hardware access |
794 | */ |
795 | static int |
796 | channel_bctrl(struct bchannel *bch, struct mISDN_ctrl_req *cq) |
797 | { |
798 | return mISDN_ctrl_bchannel(bch, cq); |
799 | } |
800 | |
801 | /* collect data from incoming interrupt or isochron USB data */ |
802 | static void |
803 | hfcsusb_rx_frame(struct usb_fifo *fifo, __u8 *data, unsigned int len, |
804 | int finish) |
805 | { |
806 | struct hfcsusb *hw = fifo->hw; |
807 | struct sk_buff *rx_skb = NULL; |
808 | int maxlen = 0; |
809 | int fifon = fifo->fifonum; |
810 | int i; |
811 | int hdlc = 0; |
812 | unsigned long flags; |
813 | |
814 | if (debug & DBG_HFC_CALL_TRACE) |
815 | printk(KERN_DEBUG "%s: %s: fifo(%i) len(%i) " |
816 | "dch(%p) bch(%p) ech(%p)\n" , |
817 | hw->name, __func__, fifon, len, |
818 | fifo->dch, fifo->bch, fifo->ech); |
819 | |
820 | if (!len) |
821 | return; |
822 | |
823 | if ((!!fifo->dch + !!fifo->bch + !!fifo->ech) != 1) { |
824 | printk(KERN_DEBUG "%s: %s: undefined channel\n" , |
825 | hw->name, __func__); |
826 | return; |
827 | } |
828 | |
829 | spin_lock_irqsave(&hw->lock, flags); |
830 | if (fifo->dch) { |
831 | rx_skb = fifo->dch->rx_skb; |
832 | maxlen = fifo->dch->maxlen; |
833 | hdlc = 1; |
834 | } |
835 | if (fifo->bch) { |
836 | if (test_bit(FLG_RX_OFF, &fifo->bch->Flags)) { |
837 | fifo->bch->dropcnt += len; |
838 | spin_unlock_irqrestore(lock: &hw->lock, flags); |
839 | return; |
840 | } |
841 | maxlen = bchannel_get_rxbuf(fifo->bch, len); |
842 | rx_skb = fifo->bch->rx_skb; |
843 | if (maxlen < 0) { |
844 | if (rx_skb) |
845 | skb_trim(skb: rx_skb, len: 0); |
846 | pr_warn("%s.B%d: No bufferspace for %d bytes\n" , |
847 | hw->name, fifo->bch->nr, len); |
848 | spin_unlock_irqrestore(lock: &hw->lock, flags); |
849 | return; |
850 | } |
851 | maxlen = fifo->bch->maxlen; |
852 | hdlc = test_bit(FLG_HDLC, &fifo->bch->Flags); |
853 | } |
854 | if (fifo->ech) { |
855 | rx_skb = fifo->ech->rx_skb; |
856 | maxlen = fifo->ech->maxlen; |
857 | hdlc = 1; |
858 | } |
859 | |
860 | if (fifo->dch || fifo->ech) { |
861 | if (!rx_skb) { |
862 | rx_skb = mI_alloc_skb(len: maxlen, GFP_ATOMIC); |
863 | if (rx_skb) { |
864 | if (fifo->dch) |
865 | fifo->dch->rx_skb = rx_skb; |
866 | if (fifo->ech) |
867 | fifo->ech->rx_skb = rx_skb; |
868 | skb_trim(skb: rx_skb, len: 0); |
869 | } else { |
870 | printk(KERN_DEBUG "%s: %s: No mem for rx_skb\n" , |
871 | hw->name, __func__); |
872 | spin_unlock_irqrestore(lock: &hw->lock, flags); |
873 | return; |
874 | } |
875 | } |
876 | /* D/E-Channel SKB range check */ |
877 | if ((rx_skb->len + len) >= MAX_DFRAME_LEN_L1) { |
878 | printk(KERN_DEBUG "%s: %s: sbk mem exceeded " |
879 | "for fifo(%d) HFCUSB_D_RX\n" , |
880 | hw->name, __func__, fifon); |
881 | skb_trim(skb: rx_skb, len: 0); |
882 | spin_unlock_irqrestore(lock: &hw->lock, flags); |
883 | return; |
884 | } |
885 | } |
886 | |
887 | skb_put_data(skb: rx_skb, data, len); |
888 | |
889 | if (hdlc) { |
890 | /* we have a complete hdlc packet */ |
891 | if (finish) { |
892 | if ((rx_skb->len > 3) && |
893 | (!(rx_skb->data[rx_skb->len - 1]))) { |
894 | if (debug & DBG_HFC_FIFO_VERBOSE) { |
895 | printk(KERN_DEBUG "%s: %s: fifon(%i)" |
896 | " new RX len(%i): " , |
897 | hw->name, __func__, fifon, |
898 | rx_skb->len); |
899 | i = 0; |
900 | while (i < rx_skb->len) |
901 | printk("%02x " , |
902 | rx_skb->data[i++]); |
903 | printk("\n" ); |
904 | } |
905 | |
906 | /* remove CRC & status */ |
907 | skb_trim(skb: rx_skb, len: rx_skb->len - 3); |
908 | |
909 | if (fifo->dch) |
910 | recv_Dchannel(fifo->dch); |
911 | if (fifo->bch) |
912 | recv_Bchannel(fifo->bch, MISDN_ID_ANY, |
913 | 0); |
914 | if (fifo->ech) |
915 | recv_Echannel(fifo->ech, |
916 | &hw->dch); |
917 | } else { |
918 | if (debug & DBG_HFC_FIFO_VERBOSE) { |
919 | printk(KERN_DEBUG |
920 | "%s: CRC or minlen ERROR fifon(%i) " |
921 | "RX len(%i): " , |
922 | hw->name, fifon, rx_skb->len); |
923 | i = 0; |
924 | while (i < rx_skb->len) |
925 | printk("%02x " , |
926 | rx_skb->data[i++]); |
927 | printk("\n" ); |
928 | } |
929 | skb_trim(skb: rx_skb, len: 0); |
930 | } |
931 | } |
932 | } else { |
933 | /* deliver transparent data to layer2 */ |
934 | recv_Bchannel(fifo->bch, MISDN_ID_ANY, false); |
935 | } |
936 | spin_unlock_irqrestore(lock: &hw->lock, flags); |
937 | } |
938 | |
939 | static void |
940 | fill_isoc_urb(struct urb *urb, struct usb_device *dev, unsigned int pipe, |
941 | void *buf, int num_packets, int packet_size, int interval, |
942 | usb_complete_t complete, void *context) |
943 | { |
944 | int k; |
945 | |
946 | usb_fill_bulk_urb(urb, dev, pipe, transfer_buffer: buf, buffer_length: packet_size * num_packets, |
947 | complete_fn: complete, context); |
948 | |
949 | urb->number_of_packets = num_packets; |
950 | urb->transfer_flags = URB_ISO_ASAP; |
951 | urb->actual_length = 0; |
952 | urb->interval = interval; |
953 | |
954 | for (k = 0; k < num_packets; k++) { |
955 | urb->iso_frame_desc[k].offset = packet_size * k; |
956 | urb->iso_frame_desc[k].length = packet_size; |
957 | urb->iso_frame_desc[k].actual_length = 0; |
958 | } |
959 | } |
960 | |
961 | /* receive completion routine for all ISO tx fifos */ |
962 | static void |
963 | rx_iso_complete(struct urb *urb) |
964 | { |
965 | struct iso_urb *context_iso_urb = (struct iso_urb *) urb->context; |
966 | struct usb_fifo *fifo = context_iso_urb->owner_fifo; |
967 | struct hfcsusb *hw = fifo->hw; |
968 | int k, len, errcode, offset, num_isoc_packets, fifon, maxlen, |
969 | status, iso_status, i; |
970 | __u8 *buf; |
971 | static __u8 eof[8]; |
972 | __u8 s0_state; |
973 | unsigned long flags; |
974 | |
975 | fifon = fifo->fifonum; |
976 | status = urb->status; |
977 | |
978 | spin_lock_irqsave(&hw->lock, flags); |
979 | if (fifo->stop_gracefull) { |
980 | fifo->stop_gracefull = 0; |
981 | fifo->active = 0; |
982 | spin_unlock_irqrestore(lock: &hw->lock, flags); |
983 | return; |
984 | } |
985 | spin_unlock_irqrestore(lock: &hw->lock, flags); |
986 | |
987 | /* |
988 | * ISO transfer only partially completed, |
989 | * look at individual frame status for details |
990 | */ |
991 | if (status == -EXDEV) { |
992 | if (debug & DEBUG_HW) |
993 | printk(KERN_DEBUG "%s: %s: with -EXDEV " |
994 | "urb->status %d, fifonum %d\n" , |
995 | hw->name, __func__, status, fifon); |
996 | |
997 | /* clear status, so go on with ISO transfers */ |
998 | status = 0; |
999 | } |
1000 | |
1001 | s0_state = 0; |
1002 | if (fifo->active && !status) { |
1003 | num_isoc_packets = iso_packets[fifon]; |
1004 | maxlen = fifo->usb_packet_maxlen; |
1005 | |
1006 | for (k = 0; k < num_isoc_packets; ++k) { |
1007 | len = urb->iso_frame_desc[k].actual_length; |
1008 | offset = urb->iso_frame_desc[k].offset; |
1009 | buf = context_iso_urb->buffer + offset; |
1010 | iso_status = urb->iso_frame_desc[k].status; |
1011 | |
1012 | if (iso_status && (debug & DBG_HFC_FIFO_VERBOSE)) { |
1013 | printk(KERN_DEBUG "%s: %s: " |
1014 | "ISO packet %i, status: %i\n" , |
1015 | hw->name, __func__, k, iso_status); |
1016 | } |
1017 | |
1018 | /* USB data log for every D ISO in */ |
1019 | if ((fifon == HFCUSB_D_RX) && |
1020 | (debug & DBG_HFC_USB_VERBOSE)) { |
1021 | printk(KERN_DEBUG |
1022 | "%s: %s: %d (%d/%d) len(%d) " , |
1023 | hw->name, __func__, urb->start_frame, |
1024 | k, num_isoc_packets - 1, |
1025 | len); |
1026 | for (i = 0; i < len; i++) |
1027 | printk("%x " , buf[i]); |
1028 | printk("\n" ); |
1029 | } |
1030 | |
1031 | if (!iso_status) { |
1032 | if (fifo->last_urblen != maxlen) { |
1033 | /* |
1034 | * save fifo fill-level threshold bits |
1035 | * to use them later in TX ISO URB |
1036 | * completions |
1037 | */ |
1038 | hw->threshold_mask = buf[1]; |
1039 | |
1040 | if (fifon == HFCUSB_D_RX) |
1041 | s0_state = (buf[0] >> 4); |
1042 | |
1043 | eof[fifon] = buf[0] & 1; |
1044 | if (len > 2) |
1045 | hfcsusb_rx_frame(fifo, data: buf + 2, |
1046 | len: len - 2, finish: (len < maxlen) |
1047 | ? eof[fifon] : 0); |
1048 | } else |
1049 | hfcsusb_rx_frame(fifo, data: buf, len, |
1050 | finish: (len < maxlen) ? |
1051 | eof[fifon] : 0); |
1052 | fifo->last_urblen = len; |
1053 | } |
1054 | } |
1055 | |
1056 | /* signal S0 layer1 state change */ |
1057 | if ((s0_state) && (hw->initdone) && |
1058 | (s0_state != hw->dch.state)) { |
1059 | hw->dch.state = s0_state; |
1060 | schedule_event(&hw->dch, FLG_PHCHANGE); |
1061 | } |
1062 | |
1063 | fill_isoc_urb(urb, dev: fifo->hw->dev, pipe: fifo->pipe, |
1064 | buf: context_iso_urb->buffer, num_packets: num_isoc_packets, |
1065 | packet_size: fifo->usb_packet_maxlen, interval: fifo->intervall, |
1066 | complete: (usb_complete_t)rx_iso_complete, context: urb->context); |
1067 | errcode = usb_submit_urb(urb, GFP_ATOMIC); |
1068 | if (errcode < 0) { |
1069 | if (debug & DEBUG_HW) |
1070 | printk(KERN_DEBUG "%s: %s: error submitting " |
1071 | "ISO URB: %d\n" , |
1072 | hw->name, __func__, errcode); |
1073 | } |
1074 | } else { |
1075 | if (status && (debug & DBG_HFC_URB_INFO)) |
1076 | printk(KERN_DEBUG "%s: %s: rx_iso_complete : " |
1077 | "urb->status %d, fifonum %d\n" , |
1078 | hw->name, __func__, status, fifon); |
1079 | } |
1080 | } |
1081 | |
1082 | /* receive completion routine for all interrupt rx fifos */ |
1083 | static void |
1084 | rx_int_complete(struct urb *urb) |
1085 | { |
1086 | int len, status, i; |
1087 | __u8 *buf, maxlen, fifon; |
1088 | struct usb_fifo *fifo = (struct usb_fifo *) urb->context; |
1089 | struct hfcsusb *hw = fifo->hw; |
1090 | static __u8 eof[8]; |
1091 | unsigned long flags; |
1092 | |
1093 | spin_lock_irqsave(&hw->lock, flags); |
1094 | if (fifo->stop_gracefull) { |
1095 | fifo->stop_gracefull = 0; |
1096 | fifo->active = 0; |
1097 | spin_unlock_irqrestore(lock: &hw->lock, flags); |
1098 | return; |
1099 | } |
1100 | spin_unlock_irqrestore(lock: &hw->lock, flags); |
1101 | |
1102 | fifon = fifo->fifonum; |
1103 | if ((!fifo->active) || (urb->status)) { |
1104 | if (debug & DBG_HFC_URB_ERROR) |
1105 | printk(KERN_DEBUG |
1106 | "%s: %s: RX-Fifo %i is going down (%i)\n" , |
1107 | hw->name, __func__, fifon, urb->status); |
1108 | |
1109 | fifo->urb->interval = 0; /* cancel automatic rescheduling */ |
1110 | return; |
1111 | } |
1112 | len = urb->actual_length; |
1113 | buf = fifo->buffer; |
1114 | maxlen = fifo->usb_packet_maxlen; |
1115 | |
1116 | /* USB data log for every D INT in */ |
1117 | if ((fifon == HFCUSB_D_RX) && (debug & DBG_HFC_USB_VERBOSE)) { |
1118 | printk(KERN_DEBUG "%s: %s: D RX INT len(%d) " , |
1119 | hw->name, __func__, len); |
1120 | for (i = 0; i < len; i++) |
1121 | printk("%02x " , buf[i]); |
1122 | printk("\n" ); |
1123 | } |
1124 | |
1125 | if (fifo->last_urblen != fifo->usb_packet_maxlen) { |
1126 | /* the threshold mask is in the 2nd status byte */ |
1127 | hw->threshold_mask = buf[1]; |
1128 | |
1129 | /* signal S0 layer1 state change */ |
1130 | if (hw->initdone && ((buf[0] >> 4) != hw->dch.state)) { |
1131 | hw->dch.state = (buf[0] >> 4); |
1132 | schedule_event(&hw->dch, FLG_PHCHANGE); |
1133 | } |
1134 | |
1135 | eof[fifon] = buf[0] & 1; |
1136 | /* if we have more than the 2 status bytes -> collect data */ |
1137 | if (len > 2) |
1138 | hfcsusb_rx_frame(fifo, data: buf + 2, |
1139 | len: urb->actual_length - 2, |
1140 | finish: (len < maxlen) ? eof[fifon] : 0); |
1141 | } else { |
1142 | hfcsusb_rx_frame(fifo, data: buf, len: urb->actual_length, |
1143 | finish: (len < maxlen) ? eof[fifon] : 0); |
1144 | } |
1145 | fifo->last_urblen = urb->actual_length; |
1146 | |
1147 | status = usb_submit_urb(urb, GFP_ATOMIC); |
1148 | if (status) { |
1149 | if (debug & DEBUG_HW) |
1150 | printk(KERN_DEBUG "%s: %s: error resubmitting USB\n" , |
1151 | hw->name, __func__); |
1152 | } |
1153 | } |
1154 | |
1155 | /* transmit completion routine for all ISO tx fifos */ |
1156 | static void |
1157 | tx_iso_complete(struct urb *urb) |
1158 | { |
1159 | struct iso_urb *context_iso_urb = (struct iso_urb *) urb->context; |
1160 | struct usb_fifo *fifo = context_iso_urb->owner_fifo; |
1161 | struct hfcsusb *hw = fifo->hw; |
1162 | struct sk_buff *tx_skb; |
1163 | int k, tx_offset, num_isoc_packets, sink, remain, current_len, |
1164 | errcode, hdlc, i; |
1165 | int *tx_idx; |
1166 | int frame_complete, fifon, status, fillempty = 0; |
1167 | __u8 threshbit, *p; |
1168 | unsigned long flags; |
1169 | |
1170 | spin_lock_irqsave(&hw->lock, flags); |
1171 | if (fifo->stop_gracefull) { |
1172 | fifo->stop_gracefull = 0; |
1173 | fifo->active = 0; |
1174 | spin_unlock_irqrestore(lock: &hw->lock, flags); |
1175 | return; |
1176 | } |
1177 | |
1178 | if (fifo->dch) { |
1179 | tx_skb = fifo->dch->tx_skb; |
1180 | tx_idx = &fifo->dch->tx_idx; |
1181 | hdlc = 1; |
1182 | } else if (fifo->bch) { |
1183 | tx_skb = fifo->bch->tx_skb; |
1184 | tx_idx = &fifo->bch->tx_idx; |
1185 | hdlc = test_bit(FLG_HDLC, &fifo->bch->Flags); |
1186 | if (!tx_skb && !hdlc && |
1187 | test_bit(FLG_FILLEMPTY, &fifo->bch->Flags)) |
1188 | fillempty = 1; |
1189 | } else { |
1190 | printk(KERN_DEBUG "%s: %s: neither BCH nor DCH\n" , |
1191 | hw->name, __func__); |
1192 | spin_unlock_irqrestore(lock: &hw->lock, flags); |
1193 | return; |
1194 | } |
1195 | |
1196 | fifon = fifo->fifonum; |
1197 | status = urb->status; |
1198 | |
1199 | tx_offset = 0; |
1200 | |
1201 | /* |
1202 | * ISO transfer only partially completed, |
1203 | * look at individual frame status for details |
1204 | */ |
1205 | if (status == -EXDEV) { |
1206 | if (debug & DBG_HFC_URB_ERROR) |
1207 | printk(KERN_DEBUG "%s: %s: " |
1208 | "-EXDEV (%i) fifon (%d)\n" , |
1209 | hw->name, __func__, status, fifon); |
1210 | |
1211 | /* clear status, so go on with ISO transfers */ |
1212 | status = 0; |
1213 | } |
1214 | |
1215 | if (fifo->active && !status) { |
1216 | /* is FifoFull-threshold set for our channel? */ |
1217 | threshbit = (hw->threshold_mask & (1 << fifon)); |
1218 | num_isoc_packets = iso_packets[fifon]; |
1219 | |
1220 | /* predict dataflow to avoid fifo overflow */ |
1221 | if (fifon >= HFCUSB_D_TX) |
1222 | sink = (threshbit) ? SINK_DMIN : SINK_DMAX; |
1223 | else |
1224 | sink = (threshbit) ? SINK_MIN : SINK_MAX; |
1225 | fill_isoc_urb(urb, dev: fifo->hw->dev, pipe: fifo->pipe, |
1226 | buf: context_iso_urb->buffer, num_packets: num_isoc_packets, |
1227 | packet_size: fifo->usb_packet_maxlen, interval: fifo->intervall, |
1228 | complete: (usb_complete_t)tx_iso_complete, context: urb->context); |
1229 | memset(context_iso_urb->buffer, 0, |
1230 | sizeof(context_iso_urb->buffer)); |
1231 | frame_complete = 0; |
1232 | |
1233 | for (k = 0; k < num_isoc_packets; ++k) { |
1234 | /* analyze tx success of previous ISO packets */ |
1235 | if (debug & DBG_HFC_URB_ERROR) { |
1236 | errcode = urb->iso_frame_desc[k].status; |
1237 | if (errcode) { |
1238 | printk(KERN_DEBUG "%s: %s: " |
1239 | "ISO packet %i, status: %i\n" , |
1240 | hw->name, __func__, k, errcode); |
1241 | } |
1242 | } |
1243 | |
1244 | /* Generate next ISO Packets */ |
1245 | if (tx_skb) |
1246 | remain = tx_skb->len - *tx_idx; |
1247 | else if (fillempty) |
1248 | remain = 15; /* > not complete */ |
1249 | else |
1250 | remain = 0; |
1251 | |
1252 | if (remain > 0) { |
1253 | fifo->bit_line -= sink; |
1254 | current_len = (0 - fifo->bit_line) / 8; |
1255 | if (current_len > 14) |
1256 | current_len = 14; |
1257 | if (current_len < 0) |
1258 | current_len = 0; |
1259 | if (remain < current_len) |
1260 | current_len = remain; |
1261 | |
1262 | /* how much bit do we put on the line? */ |
1263 | fifo->bit_line += current_len * 8; |
1264 | |
1265 | context_iso_urb->buffer[tx_offset] = 0; |
1266 | if (current_len == remain) { |
1267 | if (hdlc) { |
1268 | /* signal frame completion */ |
1269 | context_iso_urb-> |
1270 | buffer[tx_offset] = 1; |
1271 | /* add 2 byte flags and 16bit |
1272 | * CRC at end of ISDN frame */ |
1273 | fifo->bit_line += 32; |
1274 | } |
1275 | frame_complete = 1; |
1276 | } |
1277 | |
1278 | /* copy tx data to iso-urb buffer */ |
1279 | p = context_iso_urb->buffer + tx_offset + 1; |
1280 | if (fillempty) { |
1281 | memset(p, fifo->bch->fill[0], |
1282 | current_len); |
1283 | } else { |
1284 | memcpy(p, (tx_skb->data + *tx_idx), |
1285 | current_len); |
1286 | *tx_idx += current_len; |
1287 | } |
1288 | urb->iso_frame_desc[k].offset = tx_offset; |
1289 | urb->iso_frame_desc[k].length = current_len + 1; |
1290 | |
1291 | /* USB data log for every D ISO out */ |
1292 | if ((fifon == HFCUSB_D_RX) && !fillempty && |
1293 | (debug & DBG_HFC_USB_VERBOSE)) { |
1294 | printk(KERN_DEBUG |
1295 | "%s: %s (%d/%d) offs(%d) len(%d) " , |
1296 | hw->name, __func__, |
1297 | k, num_isoc_packets - 1, |
1298 | urb->iso_frame_desc[k].offset, |
1299 | urb->iso_frame_desc[k].length); |
1300 | |
1301 | for (i = urb->iso_frame_desc[k].offset; |
1302 | i < (urb->iso_frame_desc[k].offset |
1303 | + urb->iso_frame_desc[k].length); |
1304 | i++) |
1305 | printk("%x " , |
1306 | context_iso_urb->buffer[i]); |
1307 | |
1308 | printk(" skb->len(%i) tx-idx(%d)\n" , |
1309 | tx_skb->len, *tx_idx); |
1310 | } |
1311 | |
1312 | tx_offset += (current_len + 1); |
1313 | } else { |
1314 | urb->iso_frame_desc[k].offset = tx_offset++; |
1315 | urb->iso_frame_desc[k].length = 1; |
1316 | /* we lower data margin every msec */ |
1317 | fifo->bit_line -= sink; |
1318 | if (fifo->bit_line < BITLINE_INF) |
1319 | fifo->bit_line = BITLINE_INF; |
1320 | } |
1321 | |
1322 | if (frame_complete) { |
1323 | frame_complete = 0; |
1324 | |
1325 | if (debug & DBG_HFC_FIFO_VERBOSE) { |
1326 | printk(KERN_DEBUG "%s: %s: " |
1327 | "fifon(%i) new TX len(%i): " , |
1328 | hw->name, __func__, |
1329 | fifon, tx_skb->len); |
1330 | i = 0; |
1331 | while (i < tx_skb->len) |
1332 | printk("%02x " , |
1333 | tx_skb->data[i++]); |
1334 | printk("\n" ); |
1335 | } |
1336 | |
1337 | dev_consume_skb_irq(skb: tx_skb); |
1338 | tx_skb = NULL; |
1339 | if (fifo->dch && get_next_dframe(fifo->dch)) |
1340 | tx_skb = fifo->dch->tx_skb; |
1341 | else if (fifo->bch && |
1342 | get_next_bframe(fifo->bch)) |
1343 | tx_skb = fifo->bch->tx_skb; |
1344 | } |
1345 | } |
1346 | errcode = usb_submit_urb(urb, GFP_ATOMIC); |
1347 | if (errcode < 0) { |
1348 | if (debug & DEBUG_HW) |
1349 | printk(KERN_DEBUG |
1350 | "%s: %s: error submitting ISO URB: %d \n" , |
1351 | hw->name, __func__, errcode); |
1352 | } |
1353 | |
1354 | /* |
1355 | * abuse DChannel tx iso completion to trigger NT mode state |
1356 | * changes tx_iso_complete is assumed to be called every |
1357 | * fifo->intervall (ms) |
1358 | */ |
1359 | if ((fifon == HFCUSB_D_TX) && (hw->protocol == ISDN_P_NT_S0) |
1360 | && (hw->timers & NT_ACTIVATION_TIMER)) { |
1361 | if ((--hw->nt_timer) < 0) |
1362 | schedule_event(&hw->dch, FLG_PHCHANGE); |
1363 | } |
1364 | |
1365 | } else { |
1366 | if (status && (debug & DBG_HFC_URB_ERROR)) |
1367 | printk(KERN_DEBUG "%s: %s: urb->status %s (%i)" |
1368 | "fifonum=%d\n" , |
1369 | hw->name, __func__, |
1370 | symbolic(urb_errlist, status), status, fifon); |
1371 | } |
1372 | spin_unlock_irqrestore(lock: &hw->lock, flags); |
1373 | } |
1374 | |
1375 | /* |
1376 | * allocs urbs and start isoc transfer with two pending urbs to avoid |
1377 | * gaps in the transfer chain |
1378 | */ |
1379 | static int |
1380 | start_isoc_chain(struct usb_fifo *fifo, int num_packets_per_urb, |
1381 | usb_complete_t complete, int packet_size) |
1382 | { |
1383 | struct hfcsusb *hw = fifo->hw; |
1384 | int i, k, errcode; |
1385 | |
1386 | if (debug) |
1387 | printk(KERN_DEBUG "%s: %s: fifo %i\n" , |
1388 | hw->name, __func__, fifo->fifonum); |
1389 | |
1390 | /* allocate Memory for Iso out Urbs */ |
1391 | for (i = 0; i < 2; i++) { |
1392 | if (!(fifo->iso[i].urb)) { |
1393 | fifo->iso[i].urb = |
1394 | usb_alloc_urb(iso_packets: num_packets_per_urb, GFP_KERNEL); |
1395 | if (!(fifo->iso[i].urb)) { |
1396 | printk(KERN_DEBUG |
1397 | "%s: %s: alloc urb for fifo %i failed" , |
1398 | hw->name, __func__, fifo->fifonum); |
1399 | continue; |
1400 | } |
1401 | fifo->iso[i].owner_fifo = (struct usb_fifo *) fifo; |
1402 | fifo->iso[i].indx = i; |
1403 | |
1404 | /* Init the first iso */ |
1405 | if (ISO_BUFFER_SIZE >= |
1406 | (fifo->usb_packet_maxlen * |
1407 | num_packets_per_urb)) { |
1408 | fill_isoc_urb(urb: fifo->iso[i].urb, |
1409 | dev: fifo->hw->dev, pipe: fifo->pipe, |
1410 | buf: fifo->iso[i].buffer, |
1411 | num_packets: num_packets_per_urb, |
1412 | packet_size: fifo->usb_packet_maxlen, |
1413 | interval: fifo->intervall, complete, |
1414 | context: &fifo->iso[i]); |
1415 | memset(fifo->iso[i].buffer, 0, |
1416 | sizeof(fifo->iso[i].buffer)); |
1417 | |
1418 | for (k = 0; k < num_packets_per_urb; k++) { |
1419 | fifo->iso[i].urb-> |
1420 | iso_frame_desc[k].offset = |
1421 | k * packet_size; |
1422 | fifo->iso[i].urb-> |
1423 | iso_frame_desc[k].length = |
1424 | packet_size; |
1425 | } |
1426 | } else { |
1427 | printk(KERN_DEBUG |
1428 | "%s: %s: ISO Buffer size to small!\n" , |
1429 | hw->name, __func__); |
1430 | } |
1431 | } |
1432 | fifo->bit_line = BITLINE_INF; |
1433 | |
1434 | errcode = usb_submit_urb(urb: fifo->iso[i].urb, GFP_KERNEL); |
1435 | fifo->active = (errcode >= 0) ? 1 : 0; |
1436 | fifo->stop_gracefull = 0; |
1437 | if (errcode < 0) { |
1438 | printk(KERN_DEBUG "%s: %s: %s URB nr:%d\n" , |
1439 | hw->name, __func__, |
1440 | symbolic(urb_errlist, errcode), i); |
1441 | } |
1442 | } |
1443 | return fifo->active; |
1444 | } |
1445 | |
1446 | static void |
1447 | stop_iso_gracefull(struct usb_fifo *fifo) |
1448 | { |
1449 | struct hfcsusb *hw = fifo->hw; |
1450 | int i, timeout; |
1451 | u_long flags; |
1452 | |
1453 | for (i = 0; i < 2; i++) { |
1454 | spin_lock_irqsave(&hw->lock, flags); |
1455 | if (debug) |
1456 | printk(KERN_DEBUG "%s: %s for fifo %i.%i\n" , |
1457 | hw->name, __func__, fifo->fifonum, i); |
1458 | fifo->stop_gracefull = 1; |
1459 | spin_unlock_irqrestore(lock: &hw->lock, flags); |
1460 | } |
1461 | |
1462 | for (i = 0; i < 2; i++) { |
1463 | timeout = 3; |
1464 | while (fifo->stop_gracefull && timeout--) |
1465 | schedule_timeout_interruptible(timeout: (HZ / 1000) * 16); |
1466 | if (debug && fifo->stop_gracefull) |
1467 | printk(KERN_DEBUG "%s: ERROR %s for fifo %i.%i\n" , |
1468 | hw->name, __func__, fifo->fifonum, i); |
1469 | } |
1470 | } |
1471 | |
1472 | static void |
1473 | stop_int_gracefull(struct usb_fifo *fifo) |
1474 | { |
1475 | struct hfcsusb *hw = fifo->hw; |
1476 | int timeout; |
1477 | u_long flags; |
1478 | |
1479 | spin_lock_irqsave(&hw->lock, flags); |
1480 | if (debug) |
1481 | printk(KERN_DEBUG "%s: %s for fifo %i\n" , |
1482 | hw->name, __func__, fifo->fifonum); |
1483 | fifo->stop_gracefull = 1; |
1484 | spin_unlock_irqrestore(lock: &hw->lock, flags); |
1485 | |
1486 | timeout = 3; |
1487 | while (fifo->stop_gracefull && timeout--) |
1488 | schedule_timeout_interruptible(timeout: (HZ / 1000) * 3); |
1489 | if (debug && fifo->stop_gracefull) |
1490 | printk(KERN_DEBUG "%s: ERROR %s for fifo %i\n" , |
1491 | hw->name, __func__, fifo->fifonum); |
1492 | } |
1493 | |
1494 | /* start the interrupt transfer for the given fifo */ |
1495 | static void |
1496 | start_int_fifo(struct usb_fifo *fifo) |
1497 | { |
1498 | struct hfcsusb *hw = fifo->hw; |
1499 | int errcode; |
1500 | |
1501 | if (debug) |
1502 | printk(KERN_DEBUG "%s: %s: INT IN fifo:%d\n" , |
1503 | hw->name, __func__, fifo->fifonum); |
1504 | |
1505 | if (!fifo->urb) { |
1506 | fifo->urb = usb_alloc_urb(iso_packets: 0, GFP_KERNEL); |
1507 | if (!fifo->urb) |
1508 | return; |
1509 | } |
1510 | usb_fill_int_urb(urb: fifo->urb, dev: fifo->hw->dev, pipe: fifo->pipe, |
1511 | transfer_buffer: fifo->buffer, buffer_length: fifo->usb_packet_maxlen, |
1512 | complete_fn: (usb_complete_t)rx_int_complete, context: fifo, interval: fifo->intervall); |
1513 | fifo->active = 1; |
1514 | fifo->stop_gracefull = 0; |
1515 | errcode = usb_submit_urb(urb: fifo->urb, GFP_KERNEL); |
1516 | if (errcode) { |
1517 | printk(KERN_DEBUG "%s: %s: submit URB: status:%i\n" , |
1518 | hw->name, __func__, errcode); |
1519 | fifo->active = 0; |
1520 | } |
1521 | } |
1522 | |
1523 | static void |
1524 | setPortMode(struct hfcsusb *hw) |
1525 | { |
1526 | if (debug & DEBUG_HW) |
1527 | printk(KERN_DEBUG "%s: %s %s\n" , hw->name, __func__, |
1528 | (hw->protocol == ISDN_P_TE_S0) ? "TE" : "NT" ); |
1529 | |
1530 | if (hw->protocol == ISDN_P_TE_S0) { |
1531 | write_reg(hw, HFCUSB_SCTRL, val: 0x40); |
1532 | write_reg(hw, HFCUSB_SCTRL_E, val: 0x00); |
1533 | write_reg(hw, HFCUSB_CLKDEL, CLKDEL_TE); |
1534 | write_reg(hw, HFCUSB_STATES, val: 3 | 0x10); |
1535 | write_reg(hw, HFCUSB_STATES, val: 3); |
1536 | } else { |
1537 | write_reg(hw, HFCUSB_SCTRL, val: 0x44); |
1538 | write_reg(hw, HFCUSB_SCTRL_E, val: 0x09); |
1539 | write_reg(hw, HFCUSB_CLKDEL, CLKDEL_NT); |
1540 | write_reg(hw, HFCUSB_STATES, val: 1 | 0x10); |
1541 | write_reg(hw, HFCUSB_STATES, val: 1); |
1542 | } |
1543 | } |
1544 | |
1545 | static void |
1546 | reset_hfcsusb(struct hfcsusb *hw) |
1547 | { |
1548 | struct usb_fifo *fifo; |
1549 | int i; |
1550 | |
1551 | if (debug & DEBUG_HW) |
1552 | printk(KERN_DEBUG "%s: %s\n" , hw->name, __func__); |
1553 | |
1554 | /* do Chip reset */ |
1555 | write_reg(hw, HFCUSB_CIRM, val: 8); |
1556 | |
1557 | /* aux = output, reset off */ |
1558 | write_reg(hw, HFCUSB_CIRM, val: 0x10); |
1559 | |
1560 | /* set USB_SIZE to match the wMaxPacketSize for INT or BULK transfers */ |
1561 | write_reg(hw, HFCUSB_USB_SIZE, val: (hw->packet_size / 8) | |
1562 | ((hw->packet_size / 8) << 4)); |
1563 | |
1564 | /* set USB_SIZE_I to match the wMaxPacketSize for ISO transfers */ |
1565 | write_reg(hw, HFCUSB_USB_SIZE_I, val: hw->iso_packet_size); |
1566 | |
1567 | /* enable PCM/GCI master mode */ |
1568 | write_reg(hw, HFCUSB_MST_MODE1, val: 0); /* set default values */ |
1569 | write_reg(hw, HFCUSB_MST_MODE0, val: 1); /* enable master mode */ |
1570 | |
1571 | /* init the fifos */ |
1572 | write_reg(hw, HFCUSB_F_THRES, |
1573 | val: (HFCUSB_TX_THRESHOLD / 8) | ((HFCUSB_RX_THRESHOLD / 8) << 4)); |
1574 | |
1575 | fifo = hw->fifos; |
1576 | for (i = 0; i < HFCUSB_NUM_FIFOS; i++) { |
1577 | write_reg(hw, HFCUSB_FIFO, val: i); /* select the desired fifo */ |
1578 | fifo[i].max_size = |
1579 | (i <= HFCUSB_B2_RX) ? MAX_BCH_SIZE : MAX_DFRAME_LEN; |
1580 | fifo[i].last_urblen = 0; |
1581 | |
1582 | /* set 2 bit for D- & E-channel */ |
1583 | write_reg(hw, HFCUSB_HDLC_PAR, val: ((i <= HFCUSB_B2_RX) ? 0 : 2)); |
1584 | |
1585 | /* enable all fifos */ |
1586 | if (i == HFCUSB_D_TX) |
1587 | write_reg(hw, HFCUSB_CON_HDLC, |
1588 | val: (hw->protocol == ISDN_P_NT_S0) ? 0x08 : 0x09); |
1589 | else |
1590 | write_reg(hw, HFCUSB_CON_HDLC, val: 0x08); |
1591 | write_reg(hw, HFCUSB_INC_RES_F, val: 2); /* reset the fifo */ |
1592 | } |
1593 | |
1594 | write_reg(hw, HFCUSB_SCTRL_R, val: 0); /* disable both B receivers */ |
1595 | handle_led(hw, LED_POWER_ON); |
1596 | } |
1597 | |
1598 | /* start USB data pipes dependand on device's endpoint configuration */ |
1599 | static void |
1600 | hfcsusb_start_endpoint(struct hfcsusb *hw, int channel) |
1601 | { |
1602 | /* quick check if endpoint already running */ |
1603 | if ((channel == HFC_CHAN_D) && (hw->fifos[HFCUSB_D_RX].active)) |
1604 | return; |
1605 | if ((channel == HFC_CHAN_B1) && (hw->fifos[HFCUSB_B1_RX].active)) |
1606 | return; |
1607 | if ((channel == HFC_CHAN_B2) && (hw->fifos[HFCUSB_B2_RX].active)) |
1608 | return; |
1609 | if ((channel == HFC_CHAN_E) && (hw->fifos[HFCUSB_PCM_RX].active)) |
1610 | return; |
1611 | |
1612 | /* start rx endpoints using USB INT IN method */ |
1613 | if (hw->cfg_used == CNF_3INT3ISO || hw->cfg_used == CNF_4INT3ISO) |
1614 | start_int_fifo(fifo: hw->fifos + channel * 2 + 1); |
1615 | |
1616 | /* start rx endpoints using USB ISO IN method */ |
1617 | if (hw->cfg_used == CNF_3ISO3ISO || hw->cfg_used == CNF_4ISO3ISO) { |
1618 | switch (channel) { |
1619 | case HFC_CHAN_D: |
1620 | start_isoc_chain(fifo: hw->fifos + HFCUSB_D_RX, |
1621 | ISOC_PACKETS_D, |
1622 | complete: (usb_complete_t)rx_iso_complete, |
1623 | packet_size: 16); |
1624 | break; |
1625 | case HFC_CHAN_E: |
1626 | start_isoc_chain(fifo: hw->fifos + HFCUSB_PCM_RX, |
1627 | ISOC_PACKETS_D, |
1628 | complete: (usb_complete_t)rx_iso_complete, |
1629 | packet_size: 16); |
1630 | break; |
1631 | case HFC_CHAN_B1: |
1632 | start_isoc_chain(fifo: hw->fifos + HFCUSB_B1_RX, |
1633 | ISOC_PACKETS_B, |
1634 | complete: (usb_complete_t)rx_iso_complete, |
1635 | packet_size: 16); |
1636 | break; |
1637 | case HFC_CHAN_B2: |
1638 | start_isoc_chain(fifo: hw->fifos + HFCUSB_B2_RX, |
1639 | ISOC_PACKETS_B, |
1640 | complete: (usb_complete_t)rx_iso_complete, |
1641 | packet_size: 16); |
1642 | break; |
1643 | } |
1644 | } |
1645 | |
1646 | /* start tx endpoints using USB ISO OUT method */ |
1647 | switch (channel) { |
1648 | case HFC_CHAN_D: |
1649 | start_isoc_chain(fifo: hw->fifos + HFCUSB_D_TX, |
1650 | ISOC_PACKETS_B, |
1651 | complete: (usb_complete_t)tx_iso_complete, packet_size: 1); |
1652 | break; |
1653 | case HFC_CHAN_B1: |
1654 | start_isoc_chain(fifo: hw->fifos + HFCUSB_B1_TX, |
1655 | ISOC_PACKETS_D, |
1656 | complete: (usb_complete_t)tx_iso_complete, packet_size: 1); |
1657 | break; |
1658 | case HFC_CHAN_B2: |
1659 | start_isoc_chain(fifo: hw->fifos + HFCUSB_B2_TX, |
1660 | ISOC_PACKETS_B, |
1661 | complete: (usb_complete_t)tx_iso_complete, packet_size: 1); |
1662 | break; |
1663 | } |
1664 | } |
1665 | |
1666 | /* stop USB data pipes dependand on device's endpoint configuration */ |
1667 | static void |
1668 | hfcsusb_stop_endpoint(struct hfcsusb *hw, int channel) |
1669 | { |
1670 | /* quick check if endpoint currently running */ |
1671 | if ((channel == HFC_CHAN_D) && (!hw->fifos[HFCUSB_D_RX].active)) |
1672 | return; |
1673 | if ((channel == HFC_CHAN_B1) && (!hw->fifos[HFCUSB_B1_RX].active)) |
1674 | return; |
1675 | if ((channel == HFC_CHAN_B2) && (!hw->fifos[HFCUSB_B2_RX].active)) |
1676 | return; |
1677 | if ((channel == HFC_CHAN_E) && (!hw->fifos[HFCUSB_PCM_RX].active)) |
1678 | return; |
1679 | |
1680 | /* rx endpoints using USB INT IN method */ |
1681 | if (hw->cfg_used == CNF_3INT3ISO || hw->cfg_used == CNF_4INT3ISO) |
1682 | stop_int_gracefull(fifo: hw->fifos + channel * 2 + 1); |
1683 | |
1684 | /* rx endpoints using USB ISO IN method */ |
1685 | if (hw->cfg_used == CNF_3ISO3ISO || hw->cfg_used == CNF_4ISO3ISO) |
1686 | stop_iso_gracefull(fifo: hw->fifos + channel * 2 + 1); |
1687 | |
1688 | /* tx endpoints using USB ISO OUT method */ |
1689 | if (channel != HFC_CHAN_E) |
1690 | stop_iso_gracefull(fifo: hw->fifos + channel * 2); |
1691 | } |
1692 | |
1693 | |
1694 | /* Hardware Initialization */ |
1695 | static int |
1696 | setup_hfcsusb(struct hfcsusb *hw) |
1697 | { |
1698 | void *dmabuf = kmalloc(size: sizeof(u_char), GFP_KERNEL); |
1699 | u_char b; |
1700 | int ret; |
1701 | |
1702 | if (debug & DBG_HFC_CALL_TRACE) |
1703 | printk(KERN_DEBUG "%s: %s\n" , hw->name, __func__); |
1704 | |
1705 | if (!dmabuf) |
1706 | return -ENOMEM; |
1707 | |
1708 | ret = read_reg_atomic(hw, HFCUSB_CHIP_ID, dmabuf); |
1709 | |
1710 | memcpy(&b, dmabuf, sizeof(u_char)); |
1711 | kfree(objp: dmabuf); |
1712 | |
1713 | /* check the chip id */ |
1714 | if (ret != 1) { |
1715 | printk(KERN_DEBUG "%s: %s: cannot read chip id\n" , |
1716 | hw->name, __func__); |
1717 | return 1; |
1718 | } |
1719 | if (b != HFCUSB_CHIPID) { |
1720 | printk(KERN_DEBUG "%s: %s: Invalid chip id 0x%02x\n" , |
1721 | hw->name, __func__, b); |
1722 | return 1; |
1723 | } |
1724 | |
1725 | /* first set the needed config, interface and alternate */ |
1726 | (void) usb_set_interface(dev: hw->dev, ifnum: hw->if_used, alternate: hw->alt_used); |
1727 | |
1728 | hw->led_state = 0; |
1729 | |
1730 | /* init the background machinery for control requests */ |
1731 | hw->ctrl_read.bRequestType = 0xc0; |
1732 | hw->ctrl_read.bRequest = 1; |
1733 | hw->ctrl_read.wLength = cpu_to_le16(1); |
1734 | hw->ctrl_write.bRequestType = 0x40; |
1735 | hw->ctrl_write.bRequest = 0; |
1736 | hw->ctrl_write.wLength = 0; |
1737 | usb_fill_control_urb(urb: hw->ctrl_urb, dev: hw->dev, pipe: hw->ctrl_out_pipe, |
1738 | setup_packet: (u_char *)&hw->ctrl_write, NULL, buffer_length: 0, |
1739 | complete_fn: (usb_complete_t)ctrl_complete, context: hw); |
1740 | |
1741 | reset_hfcsusb(hw); |
1742 | return 0; |
1743 | } |
1744 | |
1745 | static void |
1746 | release_hw(struct hfcsusb *hw) |
1747 | { |
1748 | if (debug & DBG_HFC_CALL_TRACE) |
1749 | printk(KERN_DEBUG "%s: %s\n" , hw->name, __func__); |
1750 | |
1751 | /* |
1752 | * stop all endpoints gracefully |
1753 | * TODO: mISDN_core should generate CLOSE_CHANNEL |
1754 | * signals after calling mISDN_unregister_device() |
1755 | */ |
1756 | hfcsusb_stop_endpoint(hw, HFC_CHAN_D); |
1757 | hfcsusb_stop_endpoint(hw, HFC_CHAN_B1); |
1758 | hfcsusb_stop_endpoint(hw, HFC_CHAN_B2); |
1759 | if (hw->fifos[HFCUSB_PCM_RX].pipe) |
1760 | hfcsusb_stop_endpoint(hw, HFC_CHAN_E); |
1761 | if (hw->protocol == ISDN_P_TE_S0) |
1762 | l1_event(hw->dch.l1, CLOSE_CHANNEL); |
1763 | |
1764 | mISDN_unregister_device(&hw->dch.dev); |
1765 | mISDN_freebchannel(&hw->bch[1]); |
1766 | mISDN_freebchannel(&hw->bch[0]); |
1767 | mISDN_freedchannel(&hw->dch); |
1768 | |
1769 | if (hw->ctrl_urb) { |
1770 | usb_kill_urb(urb: hw->ctrl_urb); |
1771 | usb_free_urb(urb: hw->ctrl_urb); |
1772 | hw->ctrl_urb = NULL; |
1773 | } |
1774 | |
1775 | if (hw->intf) |
1776 | usb_set_intfdata(intf: hw->intf, NULL); |
1777 | list_del(entry: &hw->list); |
1778 | kfree(objp: hw); |
1779 | hw = NULL; |
1780 | } |
1781 | |
1782 | static void |
1783 | deactivate_bchannel(struct bchannel *bch) |
1784 | { |
1785 | struct hfcsusb *hw = bch->hw; |
1786 | u_long flags; |
1787 | |
1788 | if (bch->debug & DEBUG_HW) |
1789 | printk(KERN_DEBUG "%s: %s: bch->nr(%i)\n" , |
1790 | hw->name, __func__, bch->nr); |
1791 | |
1792 | spin_lock_irqsave(&hw->lock, flags); |
1793 | mISDN_clear_bchannel(bch); |
1794 | spin_unlock_irqrestore(lock: &hw->lock, flags); |
1795 | hfcsusb_setup_bch(bch, ISDN_P_NONE); |
1796 | hfcsusb_stop_endpoint(hw, channel: bch->nr - 1); |
1797 | } |
1798 | |
1799 | /* |
1800 | * Layer 1 B-channel hardware access |
1801 | */ |
1802 | static int |
1803 | hfc_bctrl(struct mISDNchannel *ch, u_int cmd, void *arg) |
1804 | { |
1805 | struct bchannel *bch = container_of(ch, struct bchannel, ch); |
1806 | int ret = -EINVAL; |
1807 | |
1808 | if (bch->debug & DEBUG_HW) |
1809 | printk(KERN_DEBUG "%s: cmd:%x %p\n" , __func__, cmd, arg); |
1810 | |
1811 | switch (cmd) { |
1812 | case HW_TESTRX_RAW: |
1813 | case HW_TESTRX_HDLC: |
1814 | case HW_TESTRX_OFF: |
1815 | ret = -EINVAL; |
1816 | break; |
1817 | |
1818 | case CLOSE_CHANNEL: |
1819 | test_and_clear_bit(FLG_OPEN, addr: &bch->Flags); |
1820 | deactivate_bchannel(bch); |
1821 | ch->protocol = ISDN_P_NONE; |
1822 | ch->peer = NULL; |
1823 | module_put(THIS_MODULE); |
1824 | ret = 0; |
1825 | break; |
1826 | case CONTROL_CHANNEL: |
1827 | ret = channel_bctrl(bch, cq: arg); |
1828 | break; |
1829 | default: |
1830 | printk(KERN_WARNING "%s: unknown prim(%x)\n" , |
1831 | __func__, cmd); |
1832 | } |
1833 | return ret; |
1834 | } |
1835 | |
1836 | static int |
1837 | setup_instance(struct hfcsusb *hw, struct device *parent) |
1838 | { |
1839 | u_long flags; |
1840 | int err, i; |
1841 | |
1842 | if (debug & DBG_HFC_CALL_TRACE) |
1843 | printk(KERN_DEBUG "%s: %s\n" , hw->name, __func__); |
1844 | |
1845 | spin_lock_init(&hw->ctrl_lock); |
1846 | spin_lock_init(&hw->lock); |
1847 | |
1848 | mISDN_initdchannel(&hw->dch, MAX_DFRAME_LEN_L1, ph_state); |
1849 | hw->dch.debug = debug & 0xFFFF; |
1850 | hw->dch.hw = hw; |
1851 | hw->dch.dev.Dprotocols = (1 << ISDN_P_TE_S0) | (1 << ISDN_P_NT_S0); |
1852 | hw->dch.dev.D.send = hfcusb_l2l1D; |
1853 | hw->dch.dev.D.ctrl = hfc_dctrl; |
1854 | |
1855 | /* enable E-Channel logging */ |
1856 | if (hw->fifos[HFCUSB_PCM_RX].pipe) |
1857 | mISDN_initdchannel(&hw->ech, MAX_DFRAME_LEN_L1, NULL); |
1858 | |
1859 | hw->dch.dev.Bprotocols = (1 << (ISDN_P_B_RAW & ISDN_P_B_MASK)) | |
1860 | (1 << (ISDN_P_B_HDLC & ISDN_P_B_MASK)); |
1861 | hw->dch.dev.nrbchan = 2; |
1862 | for (i = 0; i < 2; i++) { |
1863 | hw->bch[i].nr = i + 1; |
1864 | set_channelmap(nr: i + 1, map: hw->dch.dev.channelmap); |
1865 | hw->bch[i].debug = debug; |
1866 | mISDN_initbchannel(&hw->bch[i], MAX_DATA_MEM, poll >> 1); |
1867 | hw->bch[i].hw = hw; |
1868 | hw->bch[i].ch.send = hfcusb_l2l1B; |
1869 | hw->bch[i].ch.ctrl = hfc_bctrl; |
1870 | hw->bch[i].ch.nr = i + 1; |
1871 | list_add(new: &hw->bch[i].ch.list, head: &hw->dch.dev.bchannels); |
1872 | } |
1873 | |
1874 | hw->fifos[HFCUSB_B1_TX].bch = &hw->bch[0]; |
1875 | hw->fifos[HFCUSB_B1_RX].bch = &hw->bch[0]; |
1876 | hw->fifos[HFCUSB_B2_TX].bch = &hw->bch[1]; |
1877 | hw->fifos[HFCUSB_B2_RX].bch = &hw->bch[1]; |
1878 | hw->fifos[HFCUSB_D_TX].dch = &hw->dch; |
1879 | hw->fifos[HFCUSB_D_RX].dch = &hw->dch; |
1880 | hw->fifos[HFCUSB_PCM_RX].ech = &hw->ech; |
1881 | hw->fifos[HFCUSB_PCM_TX].ech = &hw->ech; |
1882 | |
1883 | err = setup_hfcsusb(hw); |
1884 | if (err) |
1885 | goto out; |
1886 | |
1887 | snprintf(buf: hw->name, MISDN_MAX_IDLEN - 1, fmt: "%s.%d" , DRIVER_NAME, |
1888 | hfcsusb_cnt + 1); |
1889 | printk(KERN_INFO "%s: registered as '%s'\n" , |
1890 | DRIVER_NAME, hw->name); |
1891 | |
1892 | err = mISDN_register_device(&hw->dch.dev, parent, name: hw->name); |
1893 | if (err) |
1894 | goto out; |
1895 | |
1896 | hfcsusb_cnt++; |
1897 | write_lock_irqsave(&HFClock, flags); |
1898 | list_add_tail(new: &hw->list, head: &HFClist); |
1899 | write_unlock_irqrestore(&HFClock, flags); |
1900 | return 0; |
1901 | |
1902 | out: |
1903 | mISDN_freebchannel(&hw->bch[1]); |
1904 | mISDN_freebchannel(&hw->bch[0]); |
1905 | mISDN_freedchannel(&hw->dch); |
1906 | kfree(objp: hw); |
1907 | return err; |
1908 | } |
1909 | |
1910 | static int |
1911 | hfcsusb_probe(struct usb_interface *intf, const struct usb_device_id *id) |
1912 | { |
1913 | struct hfcsusb *hw; |
1914 | struct usb_device *dev = interface_to_usbdev(intf); |
1915 | struct usb_host_interface *iface = intf->cur_altsetting; |
1916 | struct usb_host_interface *iface_used = NULL; |
1917 | struct usb_host_endpoint *ep; |
1918 | struct hfcsusb_vdata *driver_info; |
1919 | int ifnum = iface->desc.bInterfaceNumber, i, idx, alt_idx, |
1920 | probe_alt_setting, vend_idx, cfg_used, *vcf, attr, cfg_found, |
1921 | ep_addr, cmptbl[16], small_match, iso_packet_size, packet_size, |
1922 | alt_used = 0; |
1923 | |
1924 | vend_idx = 0xffff; |
1925 | for (i = 0; hfcsusb_idtab[i].idVendor; i++) { |
1926 | if ((le16_to_cpu(dev->descriptor.idVendor) |
1927 | == hfcsusb_idtab[i].idVendor) && |
1928 | (le16_to_cpu(dev->descriptor.idProduct) |
1929 | == hfcsusb_idtab[i].idProduct)) { |
1930 | vend_idx = i; |
1931 | continue; |
1932 | } |
1933 | } |
1934 | |
1935 | printk(KERN_DEBUG |
1936 | "%s: interface(%d) actalt(%d) minor(%d) vend_idx(%d)\n" , |
1937 | __func__, ifnum, iface->desc.bAlternateSetting, |
1938 | intf->minor, vend_idx); |
1939 | |
1940 | if (vend_idx == 0xffff) { |
1941 | printk(KERN_WARNING |
1942 | "%s: no valid vendor found in USB descriptor\n" , |
1943 | __func__); |
1944 | return -EIO; |
1945 | } |
1946 | /* if vendor and product ID is OK, start probing alternate settings */ |
1947 | alt_idx = 0; |
1948 | small_match = -1; |
1949 | |
1950 | /* default settings */ |
1951 | iso_packet_size = 16; |
1952 | packet_size = 64; |
1953 | |
1954 | while (alt_idx < intf->num_altsetting) { |
1955 | iface = intf->altsetting + alt_idx; |
1956 | probe_alt_setting = iface->desc.bAlternateSetting; |
1957 | cfg_used = 0; |
1958 | |
1959 | while (validconf[cfg_used][0]) { |
1960 | cfg_found = 1; |
1961 | vcf = validconf[cfg_used]; |
1962 | ep = iface->endpoint; |
1963 | memcpy(cmptbl, vcf, 16 * sizeof(int)); |
1964 | |
1965 | /* check for all endpoints in this alternate setting */ |
1966 | for (i = 0; i < iface->desc.bNumEndpoints; i++) { |
1967 | ep_addr = ep->desc.bEndpointAddress; |
1968 | |
1969 | /* get endpoint base */ |
1970 | idx = ((ep_addr & 0x7f) - 1) * 2; |
1971 | if (idx > 15) |
1972 | return -EIO; |
1973 | |
1974 | if (ep_addr & 0x80) |
1975 | idx++; |
1976 | attr = ep->desc.bmAttributes; |
1977 | |
1978 | if (cmptbl[idx] != EP_NOP) { |
1979 | if (cmptbl[idx] == EP_NUL) |
1980 | cfg_found = 0; |
1981 | if (attr == USB_ENDPOINT_XFER_INT |
1982 | && cmptbl[idx] == EP_INT) |
1983 | cmptbl[idx] = EP_NUL; |
1984 | if (attr == USB_ENDPOINT_XFER_BULK |
1985 | && cmptbl[idx] == EP_BLK) |
1986 | cmptbl[idx] = EP_NUL; |
1987 | if (attr == USB_ENDPOINT_XFER_ISOC |
1988 | && cmptbl[idx] == EP_ISO) |
1989 | cmptbl[idx] = EP_NUL; |
1990 | |
1991 | if (attr == USB_ENDPOINT_XFER_INT && |
1992 | ep->desc.bInterval < vcf[17]) { |
1993 | cfg_found = 0; |
1994 | } |
1995 | } |
1996 | ep++; |
1997 | } |
1998 | |
1999 | for (i = 0; i < 16; i++) |
2000 | if (cmptbl[i] != EP_NOP && cmptbl[i] != EP_NUL) |
2001 | cfg_found = 0; |
2002 | |
2003 | if (cfg_found) { |
2004 | if (small_match < cfg_used) { |
2005 | small_match = cfg_used; |
2006 | alt_used = probe_alt_setting; |
2007 | iface_used = iface; |
2008 | } |
2009 | } |
2010 | cfg_used++; |
2011 | } |
2012 | alt_idx++; |
2013 | } /* (alt_idx < intf->num_altsetting) */ |
2014 | |
2015 | /* not found a valid USB Ta Endpoint config */ |
2016 | if (small_match == -1) |
2017 | return -EIO; |
2018 | |
2019 | iface = iface_used; |
2020 | hw = kzalloc(size: sizeof(struct hfcsusb), GFP_KERNEL); |
2021 | if (!hw) |
2022 | return -ENOMEM; /* got no mem */ |
2023 | snprintf(buf: hw->name, MISDN_MAX_IDLEN - 1, fmt: "%s" , DRIVER_NAME); |
2024 | |
2025 | ep = iface->endpoint; |
2026 | vcf = validconf[small_match]; |
2027 | |
2028 | for (i = 0; i < iface->desc.bNumEndpoints; i++) { |
2029 | struct usb_fifo *f; |
2030 | |
2031 | ep_addr = ep->desc.bEndpointAddress; |
2032 | /* get endpoint base */ |
2033 | idx = ((ep_addr & 0x7f) - 1) * 2; |
2034 | if (ep_addr & 0x80) |
2035 | idx++; |
2036 | f = &hw->fifos[idx & 7]; |
2037 | |
2038 | /* init Endpoints */ |
2039 | if (vcf[idx] == EP_NOP || vcf[idx] == EP_NUL) { |
2040 | ep++; |
2041 | continue; |
2042 | } |
2043 | switch (ep->desc.bmAttributes) { |
2044 | case USB_ENDPOINT_XFER_INT: |
2045 | f->pipe = usb_rcvintpipe(dev, |
2046 | ep->desc.bEndpointAddress); |
2047 | f->usb_transfer_mode = USB_INT; |
2048 | packet_size = le16_to_cpu(ep->desc.wMaxPacketSize); |
2049 | break; |
2050 | case USB_ENDPOINT_XFER_BULK: |
2051 | if (ep_addr & 0x80) |
2052 | f->pipe = usb_rcvbulkpipe(dev, |
2053 | ep->desc.bEndpointAddress); |
2054 | else |
2055 | f->pipe = usb_sndbulkpipe(dev, |
2056 | ep->desc.bEndpointAddress); |
2057 | f->usb_transfer_mode = USB_BULK; |
2058 | packet_size = le16_to_cpu(ep->desc.wMaxPacketSize); |
2059 | break; |
2060 | case USB_ENDPOINT_XFER_ISOC: |
2061 | if (ep_addr & 0x80) |
2062 | f->pipe = usb_rcvisocpipe(dev, |
2063 | ep->desc.bEndpointAddress); |
2064 | else |
2065 | f->pipe = usb_sndisocpipe(dev, |
2066 | ep->desc.bEndpointAddress); |
2067 | f->usb_transfer_mode = USB_ISOC; |
2068 | iso_packet_size = le16_to_cpu(ep->desc.wMaxPacketSize); |
2069 | break; |
2070 | default: |
2071 | f->pipe = 0; |
2072 | } |
2073 | |
2074 | if (f->pipe) { |
2075 | f->fifonum = idx & 7; |
2076 | f->hw = hw; |
2077 | f->usb_packet_maxlen = |
2078 | le16_to_cpu(ep->desc.wMaxPacketSize); |
2079 | f->intervall = ep->desc.bInterval; |
2080 | } |
2081 | ep++; |
2082 | } |
2083 | hw->dev = dev; /* save device */ |
2084 | hw->if_used = ifnum; /* save used interface */ |
2085 | hw->alt_used = alt_used; /* and alternate config */ |
2086 | hw->ctrl_paksize = dev->descriptor.bMaxPacketSize0; /* control size */ |
2087 | hw->cfg_used = vcf[16]; /* store used config */ |
2088 | hw->vend_idx = vend_idx; /* store found vendor */ |
2089 | hw->packet_size = packet_size; |
2090 | hw->iso_packet_size = iso_packet_size; |
2091 | |
2092 | /* create the control pipes needed for register access */ |
2093 | hw->ctrl_in_pipe = usb_rcvctrlpipe(hw->dev, 0); |
2094 | hw->ctrl_out_pipe = usb_sndctrlpipe(hw->dev, 0); |
2095 | |
2096 | driver_info = (struct hfcsusb_vdata *) |
2097 | hfcsusb_idtab[vend_idx].driver_info; |
2098 | |
2099 | hw->ctrl_urb = usb_alloc_urb(iso_packets: 0, GFP_KERNEL); |
2100 | if (!hw->ctrl_urb) { |
2101 | pr_warn("%s: No memory for control urb\n" , |
2102 | driver_info->vend_name); |
2103 | kfree(objp: hw); |
2104 | return -ENOMEM; |
2105 | } |
2106 | |
2107 | pr_info("%s: %s: detected \"%s\" (%s, if=%d alt=%d)\n" , |
2108 | hw->name, __func__, driver_info->vend_name, |
2109 | conf_str[small_match], ifnum, alt_used); |
2110 | |
2111 | if (setup_instance(hw, parent: dev->dev.parent)) |
2112 | return -EIO; |
2113 | |
2114 | hw->intf = intf; |
2115 | usb_set_intfdata(intf: hw->intf, data: hw); |
2116 | return 0; |
2117 | } |
2118 | |
2119 | /* function called when an active device is removed */ |
2120 | static void |
2121 | hfcsusb_disconnect(struct usb_interface *intf) |
2122 | { |
2123 | struct hfcsusb *hw = usb_get_intfdata(intf); |
2124 | struct hfcsusb *next; |
2125 | int cnt = 0; |
2126 | |
2127 | printk(KERN_INFO "%s: device disconnected\n" , hw->name); |
2128 | |
2129 | handle_led(hw, LED_POWER_OFF); |
2130 | release_hw(hw); |
2131 | |
2132 | list_for_each_entry_safe(hw, next, &HFClist, list) |
2133 | cnt++; |
2134 | if (!cnt) |
2135 | hfcsusb_cnt = 0; |
2136 | |
2137 | usb_set_intfdata(intf, NULL); |
2138 | } |
2139 | |
2140 | static struct usb_driver hfcsusb_drv = { |
2141 | .name = DRIVER_NAME, |
2142 | .id_table = hfcsusb_idtab, |
2143 | .probe = hfcsusb_probe, |
2144 | .disconnect = hfcsusb_disconnect, |
2145 | .disable_hub_initiated_lpm = 1, |
2146 | }; |
2147 | |
2148 | module_usb_driver(hfcsusb_drv); |
2149 | |