blob: 9c17473da83b745a6a442bfcdfe559730268b491 [file] [log] [blame]
Karsten Keil69f52ad2009-01-09 16:20:51 +01001/* hfcsusb.c
2 * mISDN driver for Colognechip HFC-S USB chip
3 *
4 * Copyright 2001 by Peter Sprenger (sprenger@moving-bytes.de)
5 * Copyright 2008 by Martin Bachem (info@bachem-it.com)
6 *
7 * This program is free software; you can redistribute it and/or modify
8 * it under the terms of the GNU General Public License as published by
9 * the Free Software Foundation; either version 2, or (at your option)
10 * any later version.
11 *
12 * This program is distributed in the hope that it will be useful,
13 * but WITHOUT ANY WARRANTY; without even the implied warranty of
14 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
15 * GNU General Public License for more details.
16 *
17 * You should have received a copy of the GNU General Public License
18 * along with this program; if not, write to the Free Software
19 * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
20 *
21 *
22 * module params
23 * debug=<n>, default=0, with n=0xHHHHGGGG
24 * H - l1 driver flags described in hfcsusb.h
25 * G - common mISDN debug flags described at mISDNhw.h
26 *
27 * poll=<n>, default 128
28 * n : burst size of PH_DATA_IND at transparent rx data
29 *
Danny Kukawka670d6082012-02-10 05:01:08 +000030 * Revision: 0.3.3 (socket), 2008-11-05
Karsten Keil69f52ad2009-01-09 16:20:51 +010031 */
32
33#include <linux/module.h>
34#include <linux/delay.h>
35#include <linux/usb.h>
36#include <linux/mISDNhw.h>
Tejun Heo5a0e3ad2010-03-24 17:04:11 +090037#include <linux/slab.h>
Karsten Keil69f52ad2009-01-09 16:20:51 +010038#include "hfcsusb.h"
39
Karsten Keil69f52ad2009-01-09 16:20:51 +010040static unsigned int debug;
41static int poll = DEFAULT_TRANSP_BURST_SZ;
42
43static LIST_HEAD(HFClist);
44static DEFINE_RWLOCK(HFClock);
45
46
47MODULE_AUTHOR("Martin Bachem");
48MODULE_LICENSE("GPL");
49module_param(debug, uint, S_IRUGO | S_IWUSR);
50module_param(poll, int, 0);
51
52static int hfcsusb_cnt;
53
54/* some function prototypes */
55static void hfcsusb_ph_command(struct hfcsusb *hw, u_char command);
56static void release_hw(struct hfcsusb *hw);
57static void reset_hfcsusb(struct hfcsusb *hw);
58static void setPortMode(struct hfcsusb *hw);
59static void hfcsusb_start_endpoint(struct hfcsusb *hw, int channel);
60static void hfcsusb_stop_endpoint(struct hfcsusb *hw, int channel);
61static int hfcsusb_setup_bch(struct bchannel *bch, int protocol);
62static void deactivate_bchannel(struct bchannel *bch);
63static void hfcsusb_ph_info(struct hfcsusb *hw);
64
65/* start next background transfer for control channel */
66static void
67ctrl_start_transfer(struct hfcsusb *hw)
68{
69 if (debug & DBG_HFC_CALL_TRACE)
70 printk(KERN_DEBUG "%s: %s\n", hw->name, __func__);
71
72 if (hw->ctrl_cnt) {
73 hw->ctrl_urb->pipe = hw->ctrl_out_pipe;
74 hw->ctrl_urb->setup_packet = (u_char *)&hw->ctrl_write;
75 hw->ctrl_urb->transfer_buffer = NULL;
76 hw->ctrl_urb->transfer_buffer_length = 0;
77 hw->ctrl_write.wIndex =
Joe Perches475be4d2012-02-19 19:52:38 -080078 cpu_to_le16(hw->ctrl_buff[hw->ctrl_out_idx].hfcs_reg);
Karsten Keil69f52ad2009-01-09 16:20:51 +010079 hw->ctrl_write.wValue =
Joe Perches475be4d2012-02-19 19:52:38 -080080 cpu_to_le16(hw->ctrl_buff[hw->ctrl_out_idx].reg_val);
Karsten Keil69f52ad2009-01-09 16:20:51 +010081
82 usb_submit_urb(hw->ctrl_urb, GFP_ATOMIC);
83 }
84}
85
86/*
87 * queue a control transfer request to write HFC-S USB
88 * chip register using CTRL resuest queue
89 */
90static int write_reg(struct hfcsusb *hw, __u8 reg, __u8 val)
91{
92 struct ctrl_buf *buf;
93
94 if (debug & DBG_HFC_CALL_TRACE)
95 printk(KERN_DEBUG "%s: %s reg(0x%02x) val(0x%02x)\n",
Joe Perches475be4d2012-02-19 19:52:38 -080096 hw->name, __func__, reg, val);
Karsten Keil69f52ad2009-01-09 16:20:51 +010097
98 spin_lock(&hw->ctrl_lock);
Julia Lawalle72e9f32010-05-26 05:55:10 +000099 if (hw->ctrl_cnt >= HFC_CTRL_BUFSIZE) {
100 spin_unlock(&hw->ctrl_lock);
Karsten Keil69f52ad2009-01-09 16:20:51 +0100101 return 1;
Julia Lawalle72e9f32010-05-26 05:55:10 +0000102 }
Karsten Keil69f52ad2009-01-09 16:20:51 +0100103 buf = &hw->ctrl_buff[hw->ctrl_in_idx];
104 buf->hfcs_reg = reg;
105 buf->reg_val = val;
106 if (++hw->ctrl_in_idx >= HFC_CTRL_BUFSIZE)
107 hw->ctrl_in_idx = 0;
108 if (++hw->ctrl_cnt == 1)
109 ctrl_start_transfer(hw);
110 spin_unlock(&hw->ctrl_lock);
111
112 return 0;
113}
114
115/* control completion routine handling background control cmds */
116static void
117ctrl_complete(struct urb *urb)
118{
119 struct hfcsusb *hw = (struct hfcsusb *) urb->context;
Karsten Keil69f52ad2009-01-09 16:20:51 +0100120
121 if (debug & DBG_HFC_CALL_TRACE)
122 printk(KERN_DEBUG "%s: %s\n", hw->name, __func__);
123
124 urb->dev = hw->dev;
125 if (hw->ctrl_cnt) {
Karsten Keil69f52ad2009-01-09 16:20:51 +0100126 hw->ctrl_cnt--; /* decrement actual count */
127 if (++hw->ctrl_out_idx >= HFC_CTRL_BUFSIZE)
128 hw->ctrl_out_idx = 0; /* pointer wrap */
129
130 ctrl_start_transfer(hw); /* start next transfer */
131 }
132}
133
134/* handle LED bits */
135static void
136set_led_bit(struct hfcsusb *hw, signed short led_bits, int set_on)
137{
138 if (set_on) {
139 if (led_bits < 0)
140 hw->led_state &= ~abs(led_bits);
141 else
142 hw->led_state |= led_bits;
143 } else {
144 if (led_bits < 0)
145 hw->led_state |= abs(led_bits);
146 else
147 hw->led_state &= ~led_bits;
148 }
149}
150
151/* handle LED requests */
152static void
153handle_led(struct hfcsusb *hw, int event)
154{
155 struct hfcsusb_vdata *driver_info = (struct hfcsusb_vdata *)
156 hfcsusb_idtab[hw->vend_idx].driver_info;
157 __u8 tmpled;
158
159 if (driver_info->led_scheme == LED_OFF)
160 return;
161 tmpled = hw->led_state;
162
163 switch (event) {
164 case LED_POWER_ON:
165 set_led_bit(hw, driver_info->led_bits[0], 1);
166 set_led_bit(hw, driver_info->led_bits[1], 0);
167 set_led_bit(hw, driver_info->led_bits[2], 0);
168 set_led_bit(hw, driver_info->led_bits[3], 0);
169 break;
170 case LED_POWER_OFF:
171 set_led_bit(hw, driver_info->led_bits[0], 0);
172 set_led_bit(hw, driver_info->led_bits[1], 0);
173 set_led_bit(hw, driver_info->led_bits[2], 0);
174 set_led_bit(hw, driver_info->led_bits[3], 0);
175 break;
176 case LED_S0_ON:
177 set_led_bit(hw, driver_info->led_bits[1], 1);
178 break;
179 case LED_S0_OFF:
180 set_led_bit(hw, driver_info->led_bits[1], 0);
181 break;
182 case LED_B1_ON:
183 set_led_bit(hw, driver_info->led_bits[2], 1);
184 break;
185 case LED_B1_OFF:
186 set_led_bit(hw, driver_info->led_bits[2], 0);
187 break;
188 case LED_B2_ON:
189 set_led_bit(hw, driver_info->led_bits[3], 1);
190 break;
191 case LED_B2_OFF:
192 set_led_bit(hw, driver_info->led_bits[3], 0);
193 break;
194 }
195
196 if (hw->led_state != tmpled) {
197 if (debug & DBG_HFC_CALL_TRACE)
198 printk(KERN_DEBUG "%s: %s reg(0x%02x) val(x%02x)\n",
Joe Perches475be4d2012-02-19 19:52:38 -0800199 hw->name, __func__,
200 HFCUSB_P_DATA, hw->led_state);
Karsten Keil69f52ad2009-01-09 16:20:51 +0100201
202 write_reg(hw, HFCUSB_P_DATA, hw->led_state);
203 }
204}
205
206/*
207 * Layer2 -> Layer 1 Bchannel data
208 */
209static int
210hfcusb_l2l1B(struct mISDNchannel *ch, struct sk_buff *skb)
211{
212 struct bchannel *bch = container_of(ch, struct bchannel, ch);
213 struct hfcsusb *hw = bch->hw;
214 int ret = -EINVAL;
215 struct mISDNhead *hh = mISDN_HEAD_P(skb);
216 u_long flags;
217
218 if (debug & DBG_HFC_CALL_TRACE)
219 printk(KERN_DEBUG "%s: %s\n", hw->name, __func__);
220
221 switch (hh->prim) {
222 case PH_DATA_REQ:
223 spin_lock_irqsave(&hw->lock, flags);
224 ret = bchannel_senddata(bch, skb);
225 spin_unlock_irqrestore(&hw->lock, flags);
226 if (debug & DBG_HFC_CALL_TRACE)
227 printk(KERN_DEBUG "%s: %s PH_DATA_REQ ret(%i)\n",
Joe Perches475be4d2012-02-19 19:52:38 -0800228 hw->name, __func__, ret);
Karsten Keil8bfddfb2012-05-15 23:51:02 +0000229 if (ret > 0)
Karsten Keil69f52ad2009-01-09 16:20:51 +0100230 ret = 0;
Karsten Keil69f52ad2009-01-09 16:20:51 +0100231 return ret;
232 case PH_ACTIVATE_REQ:
233 if (!test_and_set_bit(FLG_ACTIVE, &bch->Flags)) {
Martin Bachem37952cf2012-05-15 23:51:04 +0000234 hfcsusb_start_endpoint(hw, bch->nr - 1);
Karsten Keil69f52ad2009-01-09 16:20:51 +0100235 ret = hfcsusb_setup_bch(bch, ch->protocol);
236 } else
237 ret = 0;
238 if (!ret)
239 _queue_data(ch, PH_ACTIVATE_IND, MISDN_ID_ANY,
Joe Perches475be4d2012-02-19 19:52:38 -0800240 0, NULL, GFP_KERNEL);
Karsten Keil69f52ad2009-01-09 16:20:51 +0100241 break;
242 case PH_DEACTIVATE_REQ:
243 deactivate_bchannel(bch);
244 _queue_data(ch, PH_DEACTIVATE_IND, MISDN_ID_ANY,
Joe Perches475be4d2012-02-19 19:52:38 -0800245 0, NULL, GFP_KERNEL);
Karsten Keil69f52ad2009-01-09 16:20:51 +0100246 ret = 0;
247 break;
248 }
249 if (!ret)
250 dev_kfree_skb(skb);
251 return ret;
252}
253
254/*
255 * send full D/B channel status information
256 * as MPH_INFORMATION_IND
257 */
258static void
259hfcsusb_ph_info(struct hfcsusb *hw)
260{
261 struct ph_info *phi;
262 struct dchannel *dch = &hw->dch;
263 int i;
264
265 phi = kzalloc(sizeof(struct ph_info) +
Joe Perches475be4d2012-02-19 19:52:38 -0800266 dch->dev.nrbchan * sizeof(struct ph_info_ch), GFP_ATOMIC);
Karsten Keil69f52ad2009-01-09 16:20:51 +0100267 phi->dch.ch.protocol = hw->protocol;
268 phi->dch.ch.Flags = dch->Flags;
269 phi->dch.state = dch->state;
270 phi->dch.num_bch = dch->dev.nrbchan;
271 for (i = 0; i < dch->dev.nrbchan; i++) {
272 phi->bch[i].protocol = hw->bch[i].ch.protocol;
273 phi->bch[i].Flags = hw->bch[i].Flags;
274 }
275 _queue_data(&dch->dev.D, MPH_INFORMATION_IND, MISDN_ID_ANY,
Joe Perches475be4d2012-02-19 19:52:38 -0800276 sizeof(struct ph_info_dch) + dch->dev.nrbchan *
277 sizeof(struct ph_info_ch), phi, GFP_ATOMIC);
Jesper Juhl84860c72011-06-11 06:36:42 +0000278 kfree(phi);
Karsten Keil69f52ad2009-01-09 16:20:51 +0100279}
280
281/*
282 * Layer2 -> Layer 1 Dchannel data
283 */
284static int
285hfcusb_l2l1D(struct mISDNchannel *ch, struct sk_buff *skb)
286{
287 struct mISDNdevice *dev = container_of(ch, struct mISDNdevice, D);
288 struct dchannel *dch = container_of(dev, struct dchannel, dev);
289 struct mISDNhead *hh = mISDN_HEAD_P(skb);
290 struct hfcsusb *hw = dch->hw;
291 int ret = -EINVAL;
292 u_long flags;
293
294 switch (hh->prim) {
295 case PH_DATA_REQ:
296 if (debug & DBG_HFC_CALL_TRACE)
297 printk(KERN_DEBUG "%s: %s: PH_DATA_REQ\n",
Joe Perches475be4d2012-02-19 19:52:38 -0800298 hw->name, __func__);
Karsten Keil69f52ad2009-01-09 16:20:51 +0100299
300 spin_lock_irqsave(&hw->lock, flags);
301 ret = dchannel_senddata(dch, skb);
302 spin_unlock_irqrestore(&hw->lock, flags);
303 if (ret > 0) {
304 ret = 0;
305 queue_ch_frame(ch, PH_DATA_CNF, hh->id, NULL);
306 }
307 break;
308
309 case PH_ACTIVATE_REQ:
310 if (debug & DBG_HFC_CALL_TRACE)
311 printk(KERN_DEBUG "%s: %s: PH_ACTIVATE_REQ %s\n",
Joe Perches475be4d2012-02-19 19:52:38 -0800312 hw->name, __func__,
313 (hw->protocol == ISDN_P_NT_S0) ? "NT" : "TE");
Karsten Keil69f52ad2009-01-09 16:20:51 +0100314
315 if (hw->protocol == ISDN_P_NT_S0) {
316 ret = 0;
317 if (test_bit(FLG_ACTIVE, &dch->Flags)) {
318 _queue_data(&dch->dev.D,
Joe Perches475be4d2012-02-19 19:52:38 -0800319 PH_ACTIVATE_IND, MISDN_ID_ANY, 0,
320 NULL, GFP_ATOMIC);
Karsten Keil69f52ad2009-01-09 16:20:51 +0100321 } else {
322 hfcsusb_ph_command(hw,
Joe Perches475be4d2012-02-19 19:52:38 -0800323 HFC_L1_ACTIVATE_NT);
Karsten Keil69f52ad2009-01-09 16:20:51 +0100324 test_and_set_bit(FLG_L2_ACTIVATED,
Joe Perches475be4d2012-02-19 19:52:38 -0800325 &dch->Flags);
Karsten Keil69f52ad2009-01-09 16:20:51 +0100326 }
327 } else {
328 hfcsusb_ph_command(hw, HFC_L1_ACTIVATE_TE);
329 ret = l1_event(dch->l1, hh->prim);
330 }
331 break;
332
333 case PH_DEACTIVATE_REQ:
334 if (debug & DBG_HFC_CALL_TRACE)
335 printk(KERN_DEBUG "%s: %s: PH_DEACTIVATE_REQ\n",
Joe Perches475be4d2012-02-19 19:52:38 -0800336 hw->name, __func__);
Karsten Keil69f52ad2009-01-09 16:20:51 +0100337 test_and_clear_bit(FLG_L2_ACTIVATED, &dch->Flags);
338
339 if (hw->protocol == ISDN_P_NT_S0) {
340 hfcsusb_ph_command(hw, HFC_L1_DEACTIVATE_NT);
341 spin_lock_irqsave(&hw->lock, flags);
342 skb_queue_purge(&dch->squeue);
343 if (dch->tx_skb) {
344 dev_kfree_skb(dch->tx_skb);
345 dch->tx_skb = NULL;
346 }
347 dch->tx_idx = 0;
348 if (dch->rx_skb) {
349 dev_kfree_skb(dch->rx_skb);
350 dch->rx_skb = NULL;
351 }
352 test_and_clear_bit(FLG_TX_BUSY, &dch->Flags);
353 spin_unlock_irqrestore(&hw->lock, flags);
354#ifdef FIXME
355 if (test_and_clear_bit(FLG_L1_BUSY, &dch->Flags))
356 dchannel_sched_event(&hc->dch, D_CLEARBUSY);
357#endif
358 ret = 0;
359 } else
360 ret = l1_event(dch->l1, hh->prim);
361 break;
362 case MPH_INFORMATION_REQ:
363 hfcsusb_ph_info(hw);
364 ret = 0;
365 break;
366 }
367
368 return ret;
369}
370
371/*
372 * Layer 1 callback function
373 */
374static int
375hfc_l1callback(struct dchannel *dch, u_int cmd)
376{
377 struct hfcsusb *hw = dch->hw;
378
379 if (debug & DBG_HFC_CALL_TRACE)
380 printk(KERN_DEBUG "%s: %s cmd 0x%x\n",
Joe Perches475be4d2012-02-19 19:52:38 -0800381 hw->name, __func__, cmd);
Karsten Keil69f52ad2009-01-09 16:20:51 +0100382
383 switch (cmd) {
384 case INFO3_P8:
385 case INFO3_P10:
386 case HW_RESET_REQ:
387 case HW_POWERUP_REQ:
388 break;
389
390 case HW_DEACT_REQ:
391 skb_queue_purge(&dch->squeue);
392 if (dch->tx_skb) {
393 dev_kfree_skb(dch->tx_skb);
394 dch->tx_skb = NULL;
395 }
396 dch->tx_idx = 0;
397 if (dch->rx_skb) {
398 dev_kfree_skb(dch->rx_skb);
399 dch->rx_skb = NULL;
400 }
401 test_and_clear_bit(FLG_TX_BUSY, &dch->Flags);
402 break;
403 case PH_ACTIVATE_IND:
404 test_and_set_bit(FLG_ACTIVE, &dch->Flags);
405 _queue_data(&dch->dev.D, cmd, MISDN_ID_ANY, 0, NULL,
Joe Perches475be4d2012-02-19 19:52:38 -0800406 GFP_ATOMIC);
Karsten Keil69f52ad2009-01-09 16:20:51 +0100407 break;
408 case PH_DEACTIVATE_IND:
409 test_and_clear_bit(FLG_ACTIVE, &dch->Flags);
410 _queue_data(&dch->dev.D, cmd, MISDN_ID_ANY, 0, NULL,
Joe Perches475be4d2012-02-19 19:52:38 -0800411 GFP_ATOMIC);
Karsten Keil69f52ad2009-01-09 16:20:51 +0100412 break;
413 default:
414 if (dch->debug & DEBUG_HW)
415 printk(KERN_DEBUG "%s: %s: unknown cmd %x\n",
Joe Perches475be4d2012-02-19 19:52:38 -0800416 hw->name, __func__, cmd);
Karsten Keil69f52ad2009-01-09 16:20:51 +0100417 return -1;
418 }
419 hfcsusb_ph_info(hw);
420 return 0;
421}
422
423static int
424open_dchannel(struct hfcsusb *hw, struct mISDNchannel *ch,
Joe Perches475be4d2012-02-19 19:52:38 -0800425 struct channel_req *rq)
Karsten Keil69f52ad2009-01-09 16:20:51 +0100426{
427 int err = 0;
428
429 if (debug & DEBUG_HW_OPEN)
430 printk(KERN_DEBUG "%s: %s: dev(%d) open addr(%i) from %p\n",
Joe Perches475be4d2012-02-19 19:52:38 -0800431 hw->name, __func__, hw->dch.dev.id, rq->adr.channel,
432 __builtin_return_address(0));
Karsten Keil69f52ad2009-01-09 16:20:51 +0100433 if (rq->protocol == ISDN_P_NONE)
434 return -EINVAL;
435
436 test_and_clear_bit(FLG_ACTIVE, &hw->dch.Flags);
437 test_and_clear_bit(FLG_ACTIVE, &hw->ech.Flags);
438 hfcsusb_start_endpoint(hw, HFC_CHAN_D);
439
440 /* E-Channel logging */
441 if (rq->adr.channel == 1) {
442 if (hw->fifos[HFCUSB_PCM_RX].pipe) {
443 hfcsusb_start_endpoint(hw, HFC_CHAN_E);
444 set_bit(FLG_ACTIVE, &hw->ech.Flags);
445 _queue_data(&hw->ech.dev.D, PH_ACTIVATE_IND,
Joe Perches475be4d2012-02-19 19:52:38 -0800446 MISDN_ID_ANY, 0, NULL, GFP_ATOMIC);
Karsten Keil69f52ad2009-01-09 16:20:51 +0100447 } else
448 return -EINVAL;
449 }
450
451 if (!hw->initdone) {
452 hw->protocol = rq->protocol;
453 if (rq->protocol == ISDN_P_TE_S0) {
454 err = create_l1(&hw->dch, hfc_l1callback);
455 if (err)
456 return err;
457 }
458 setPortMode(hw);
459 ch->protocol = rq->protocol;
460 hw->initdone = 1;
461 } else {
462 if (rq->protocol != ch->protocol)
463 return -EPROTONOSUPPORT;
464 }
465
466 if (((ch->protocol == ISDN_P_NT_S0) && (hw->dch.state == 3)) ||
467 ((ch->protocol == ISDN_P_TE_S0) && (hw->dch.state == 7)))
468 _queue_data(ch, PH_ACTIVATE_IND, MISDN_ID_ANY,
Joe Perches475be4d2012-02-19 19:52:38 -0800469 0, NULL, GFP_KERNEL);
Karsten Keil69f52ad2009-01-09 16:20:51 +0100470 rq->ch = ch;
471 if (!try_module_get(THIS_MODULE))
472 printk(KERN_WARNING "%s: %s: cannot get module\n",
Joe Perches475be4d2012-02-19 19:52:38 -0800473 hw->name, __func__);
Karsten Keil69f52ad2009-01-09 16:20:51 +0100474 return 0;
475}
476
477static int
478open_bchannel(struct hfcsusb *hw, struct channel_req *rq)
479{
480 struct bchannel *bch;
481
Dan Carpenter819a1002012-03-26 21:20:48 +0000482 if (rq->adr.channel == 0 || rq->adr.channel > 2)
Karsten Keil69f52ad2009-01-09 16:20:51 +0100483 return -EINVAL;
484 if (rq->protocol == ISDN_P_NONE)
485 return -EINVAL;
486
487 if (debug & DBG_HFC_CALL_TRACE)
488 printk(KERN_DEBUG "%s: %s B%i\n",
Joe Perches475be4d2012-02-19 19:52:38 -0800489 hw->name, __func__, rq->adr.channel);
Karsten Keil69f52ad2009-01-09 16:20:51 +0100490
491 bch = &hw->bch[rq->adr.channel - 1];
492 if (test_and_set_bit(FLG_OPEN, &bch->Flags))
493 return -EBUSY; /* b-channel can be only open once */
494 test_and_clear_bit(FLG_FILLEMPTY, &bch->Flags);
495 bch->ch.protocol = rq->protocol;
496 rq->ch = &bch->ch;
497
Karsten Keil69f52ad2009-01-09 16:20:51 +0100498 if (!try_module_get(THIS_MODULE))
499 printk(KERN_WARNING "%s: %s:cannot get module\n",
Joe Perches475be4d2012-02-19 19:52:38 -0800500 hw->name, __func__);
Karsten Keil69f52ad2009-01-09 16:20:51 +0100501 return 0;
502}
503
504static int
505channel_ctrl(struct hfcsusb *hw, struct mISDN_ctrl_req *cq)
506{
507 int ret = 0;
508
509 if (debug & DBG_HFC_CALL_TRACE)
510 printk(KERN_DEBUG "%s: %s op(0x%x) channel(0x%x)\n",
Joe Perches475be4d2012-02-19 19:52:38 -0800511 hw->name, __func__, (cq->op), (cq->channel));
Karsten Keil69f52ad2009-01-09 16:20:51 +0100512
513 switch (cq->op) {
514 case MISDN_CTRL_GETOP:
515 cq->op = MISDN_CTRL_LOOP | MISDN_CTRL_CONNECT |
Joe Perches475be4d2012-02-19 19:52:38 -0800516 MISDN_CTRL_DISCONNECT;
Karsten Keil69f52ad2009-01-09 16:20:51 +0100517 break;
518 default:
519 printk(KERN_WARNING "%s: %s: unknown Op %x\n",
Joe Perches475be4d2012-02-19 19:52:38 -0800520 hw->name, __func__, cq->op);
Karsten Keil69f52ad2009-01-09 16:20:51 +0100521 ret = -EINVAL;
522 break;
523 }
524 return ret;
525}
526
527/*
528 * device control function
529 */
530static int
531hfc_dctrl(struct mISDNchannel *ch, u_int cmd, void *arg)
532{
533 struct mISDNdevice *dev = container_of(ch, struct mISDNdevice, D);
534 struct dchannel *dch = container_of(dev, struct dchannel, dev);
535 struct hfcsusb *hw = dch->hw;
536 struct channel_req *rq;
537 int err = 0;
538
539 if (dch->debug & DEBUG_HW)
540 printk(KERN_DEBUG "%s: %s: cmd:%x %p\n",
Joe Perches475be4d2012-02-19 19:52:38 -0800541 hw->name, __func__, cmd, arg);
Karsten Keil69f52ad2009-01-09 16:20:51 +0100542 switch (cmd) {
543 case OPEN_CHANNEL:
544 rq = arg;
545 if ((rq->protocol == ISDN_P_TE_S0) ||
546 (rq->protocol == ISDN_P_NT_S0))
547 err = open_dchannel(hw, ch, rq);
548 else
549 err = open_bchannel(hw, rq);
550 if (!err)
551 hw->open++;
552 break;
553 case CLOSE_CHANNEL:
554 hw->open--;
555 if (debug & DEBUG_HW_OPEN)
556 printk(KERN_DEBUG
Joe Perches475be4d2012-02-19 19:52:38 -0800557 "%s: %s: dev(%d) close from %p (open %d)\n",
558 hw->name, __func__, hw->dch.dev.id,
559 __builtin_return_address(0), hw->open);
Karsten Keil69f52ad2009-01-09 16:20:51 +0100560 if (!hw->open) {
561 hfcsusb_stop_endpoint(hw, HFC_CHAN_D);
562 if (hw->fifos[HFCUSB_PCM_RX].pipe)
563 hfcsusb_stop_endpoint(hw, HFC_CHAN_E);
564 handle_led(hw, LED_POWER_ON);
565 }
566 module_put(THIS_MODULE);
567 break;
568 case CONTROL_CHANNEL:
569 err = channel_ctrl(hw, arg);
570 break;
571 default:
572 if (dch->debug & DEBUG_HW)
573 printk(KERN_DEBUG "%s: %s: unknown command %x\n",
Joe Perches475be4d2012-02-19 19:52:38 -0800574 hw->name, __func__, cmd);
Karsten Keil69f52ad2009-01-09 16:20:51 +0100575 return -EINVAL;
576 }
577 return err;
578}
579
580/*
581 * S0 TE state change event handler
582 */
583static void
584ph_state_te(struct dchannel *dch)
585{
586 struct hfcsusb *hw = dch->hw;
587
588 if (debug & DEBUG_HW) {
589 if (dch->state <= HFC_MAX_TE_LAYER1_STATE)
590 printk(KERN_DEBUG "%s: %s: %s\n", hw->name, __func__,
Joe Perches475be4d2012-02-19 19:52:38 -0800591 HFC_TE_LAYER1_STATES[dch->state]);
Karsten Keil69f52ad2009-01-09 16:20:51 +0100592 else
593 printk(KERN_DEBUG "%s: %s: TE F%d\n",
Joe Perches475be4d2012-02-19 19:52:38 -0800594 hw->name, __func__, dch->state);
Karsten Keil69f52ad2009-01-09 16:20:51 +0100595 }
596
597 switch (dch->state) {
598 case 0:
599 l1_event(dch->l1, HW_RESET_IND);
600 break;
601 case 3:
602 l1_event(dch->l1, HW_DEACT_IND);
603 break;
604 case 5:
605 case 8:
606 l1_event(dch->l1, ANYSIGNAL);
607 break;
608 case 6:
609 l1_event(dch->l1, INFO2);
610 break;
611 case 7:
612 l1_event(dch->l1, INFO4_P8);
613 break;
614 }
615 if (dch->state == 7)
616 handle_led(hw, LED_S0_ON);
617 else
618 handle_led(hw, LED_S0_OFF);
619}
620
621/*
622 * S0 NT state change event handler
623 */
624static void
625ph_state_nt(struct dchannel *dch)
626{
627 struct hfcsusb *hw = dch->hw;
628
629 if (debug & DEBUG_HW) {
630 if (dch->state <= HFC_MAX_NT_LAYER1_STATE)
631 printk(KERN_DEBUG "%s: %s: %s\n",
Joe Perches475be4d2012-02-19 19:52:38 -0800632 hw->name, __func__,
633 HFC_NT_LAYER1_STATES[dch->state]);
Karsten Keil69f52ad2009-01-09 16:20:51 +0100634
635 else
636 printk(KERN_INFO DRIVER_NAME "%s: %s: NT G%d\n",
Joe Perches475be4d2012-02-19 19:52:38 -0800637 hw->name, __func__, dch->state);
Karsten Keil69f52ad2009-01-09 16:20:51 +0100638 }
639
640 switch (dch->state) {
641 case (1):
642 test_and_clear_bit(FLG_ACTIVE, &dch->Flags);
643 test_and_clear_bit(FLG_L2_ACTIVATED, &dch->Flags);
644 hw->nt_timer = 0;
645 hw->timers &= ~NT_ACTIVATION_TIMER;
646 handle_led(hw, LED_S0_OFF);
647 break;
648
649 case (2):
650 if (hw->nt_timer < 0) {
651 hw->nt_timer = 0;
652 hw->timers &= ~NT_ACTIVATION_TIMER;
653 hfcsusb_ph_command(dch->hw, HFC_L1_DEACTIVATE_NT);
654 } else {
655 hw->timers |= NT_ACTIVATION_TIMER;
656 hw->nt_timer = NT_T1_COUNT;
657 /* allow G2 -> G3 transition */
658 write_reg(hw, HFCUSB_STATES, 2 | HFCUSB_NT_G2_G3);
659 }
660 break;
661 case (3):
662 hw->nt_timer = 0;
663 hw->timers &= ~NT_ACTIVATION_TIMER;
664 test_and_set_bit(FLG_ACTIVE, &dch->Flags);
665 _queue_data(&dch->dev.D, PH_ACTIVATE_IND,
Joe Perches475be4d2012-02-19 19:52:38 -0800666 MISDN_ID_ANY, 0, NULL, GFP_ATOMIC);
Karsten Keil69f52ad2009-01-09 16:20:51 +0100667 handle_led(hw, LED_S0_ON);
668 break;
669 case (4):
670 hw->nt_timer = 0;
671 hw->timers &= ~NT_ACTIVATION_TIMER;
672 break;
673 default:
674 break;
675 }
676 hfcsusb_ph_info(hw);
677}
678
679static void
680ph_state(struct dchannel *dch)
681{
682 struct hfcsusb *hw = dch->hw;
683
684 if (hw->protocol == ISDN_P_NT_S0)
685 ph_state_nt(dch);
686 else if (hw->protocol == ISDN_P_TE_S0)
687 ph_state_te(dch);
688}
689
690/*
691 * disable/enable BChannel for desired protocoll
692 */
693static int
694hfcsusb_setup_bch(struct bchannel *bch, int protocol)
695{
696 struct hfcsusb *hw = bch->hw;
697 __u8 conhdlc, sctrl, sctrl_r;
698
699 if (debug & DEBUG_HW)
700 printk(KERN_DEBUG "%s: %s: protocol %x-->%x B%d\n",
Joe Perches475be4d2012-02-19 19:52:38 -0800701 hw->name, __func__, bch->state, protocol,
702 bch->nr);
Karsten Keil69f52ad2009-01-09 16:20:51 +0100703
704 /* setup val for CON_HDLC */
705 conhdlc = 0;
706 if (protocol > ISDN_P_NONE)
707 conhdlc = 8; /* enable FIFO */
708
709 switch (protocol) {
710 case (-1): /* used for init */
711 bch->state = -1;
André Goddard Rosaaf901ca2009-11-14 13:09:05 -0200712 /* fall through */
Karsten Keil69f52ad2009-01-09 16:20:51 +0100713 case (ISDN_P_NONE):
714 if (bch->state == ISDN_P_NONE)
715 return 0; /* already in idle state */
716 bch->state = ISDN_P_NONE;
717 clear_bit(FLG_HDLC, &bch->Flags);
718 clear_bit(FLG_TRANSPARENT, &bch->Flags);
719 break;
720 case (ISDN_P_B_RAW):
721 conhdlc |= 2;
722 bch->state = protocol;
723 set_bit(FLG_TRANSPARENT, &bch->Flags);
724 break;
725 case (ISDN_P_B_HDLC):
726 bch->state = protocol;
727 set_bit(FLG_HDLC, &bch->Flags);
728 break;
729 default:
730 if (debug & DEBUG_HW)
731 printk(KERN_DEBUG "%s: %s: prot not known %x\n",
Joe Perches475be4d2012-02-19 19:52:38 -0800732 hw->name, __func__, protocol);
Karsten Keil69f52ad2009-01-09 16:20:51 +0100733 return -ENOPROTOOPT;
734 }
735
736 if (protocol >= ISDN_P_NONE) {
737 write_reg(hw, HFCUSB_FIFO, (bch->nr == 1) ? 0 : 2);
738 write_reg(hw, HFCUSB_CON_HDLC, conhdlc);
739 write_reg(hw, HFCUSB_INC_RES_F, 2);
740 write_reg(hw, HFCUSB_FIFO, (bch->nr == 1) ? 1 : 3);
741 write_reg(hw, HFCUSB_CON_HDLC, conhdlc);
742 write_reg(hw, HFCUSB_INC_RES_F, 2);
743
744 sctrl = 0x40 + ((hw->protocol == ISDN_P_TE_S0) ? 0x00 : 0x04);
745 sctrl_r = 0x0;
746 if (test_bit(FLG_ACTIVE, &hw->bch[0].Flags)) {
747 sctrl |= 1;
748 sctrl_r |= 1;
749 }
750 if (test_bit(FLG_ACTIVE, &hw->bch[1].Flags)) {
751 sctrl |= 2;
752 sctrl_r |= 2;
753 }
754 write_reg(hw, HFCUSB_SCTRL, sctrl);
755 write_reg(hw, HFCUSB_SCTRL_R, sctrl_r);
756
757 if (protocol > ISDN_P_NONE)
758 handle_led(hw, (bch->nr == 1) ? LED_B1_ON : LED_B2_ON);
759 else
760 handle_led(hw, (bch->nr == 1) ? LED_B1_OFF :
Joe Perches475be4d2012-02-19 19:52:38 -0800761 LED_B2_OFF);
Karsten Keil69f52ad2009-01-09 16:20:51 +0100762 }
763 hfcsusb_ph_info(hw);
764 return 0;
765}
766
767static void
768hfcsusb_ph_command(struct hfcsusb *hw, u_char command)
769{
770 if (debug & DEBUG_HW)
771 printk(KERN_DEBUG "%s: %s: %x\n",
Joe Perches475be4d2012-02-19 19:52:38 -0800772 hw->name, __func__, command);
Karsten Keil69f52ad2009-01-09 16:20:51 +0100773
774 switch (command) {
775 case HFC_L1_ACTIVATE_TE:
776 /* force sending sending INFO1 */
777 write_reg(hw, HFCUSB_STATES, 0x14);
778 /* start l1 activation */
779 write_reg(hw, HFCUSB_STATES, 0x04);
780 break;
781
782 case HFC_L1_FORCE_DEACTIVATE_TE:
783 write_reg(hw, HFCUSB_STATES, 0x10);
784 write_reg(hw, HFCUSB_STATES, 0x03);
785 break;
786
787 case HFC_L1_ACTIVATE_NT:
788 if (hw->dch.state == 3)
789 _queue_data(&hw->dch.dev.D, PH_ACTIVATE_IND,
Joe Perches475be4d2012-02-19 19:52:38 -0800790 MISDN_ID_ANY, 0, NULL, GFP_ATOMIC);
Karsten Keil69f52ad2009-01-09 16:20:51 +0100791 else
792 write_reg(hw, HFCUSB_STATES, HFCUSB_ACTIVATE |
Joe Perches475be4d2012-02-19 19:52:38 -0800793 HFCUSB_DO_ACTION | HFCUSB_NT_G2_G3);
Karsten Keil69f52ad2009-01-09 16:20:51 +0100794 break;
795
796 case HFC_L1_DEACTIVATE_NT:
797 write_reg(hw, HFCUSB_STATES,
Joe Perches475be4d2012-02-19 19:52:38 -0800798 HFCUSB_DO_ACTION);
Karsten Keil69f52ad2009-01-09 16:20:51 +0100799 break;
800 }
801}
802
803/*
804 * Layer 1 B-channel hardware access
805 */
806static int
807channel_bctrl(struct bchannel *bch, struct mISDN_ctrl_req *cq)
808{
809 int ret = 0;
810
811 switch (cq->op) {
812 case MISDN_CTRL_GETOP:
Karsten Keil034005a2012-05-15 23:51:06 +0000813 ret = mISDN_ctrl_bchannel(bch, cq);
814 cq->op |= MISDN_CTRL_FILL_EMPTY;
Karsten Keil69f52ad2009-01-09 16:20:51 +0100815 break;
816 case MISDN_CTRL_FILL_EMPTY: /* fill fifo, if empty */
817 test_and_set_bit(FLG_FILLEMPTY, &bch->Flags);
818 if (debug & DEBUG_HW_OPEN)
819 printk(KERN_DEBUG "%s: FILL_EMPTY request (nr=%d "
Joe Perches475be4d2012-02-19 19:52:38 -0800820 "off=%d)\n", __func__, bch->nr, !!cq->p1);
Karsten Keil69f52ad2009-01-09 16:20:51 +0100821 break;
822 default:
Karsten Keil034005a2012-05-15 23:51:06 +0000823 ret = mISDN_ctrl_bchannel(bch, cq);
Karsten Keil69f52ad2009-01-09 16:20:51 +0100824 break;
825 }
826 return ret;
827}
828
829/* collect data from incoming interrupt or isochron USB data */
830static void
831hfcsusb_rx_frame(struct usb_fifo *fifo, __u8 *data, unsigned int len,
Joe Perches475be4d2012-02-19 19:52:38 -0800832 int finish)
Karsten Keil69f52ad2009-01-09 16:20:51 +0100833{
834 struct hfcsusb *hw = fifo->hw;
835 struct sk_buff *rx_skb = NULL;
836 int maxlen = 0;
837 int fifon = fifo->fifonum;
838 int i;
839 int hdlc = 0;
840
841 if (debug & DBG_HFC_CALL_TRACE)
842 printk(KERN_DEBUG "%s: %s: fifo(%i) len(%i) "
Joe Perches475be4d2012-02-19 19:52:38 -0800843 "dch(%p) bch(%p) ech(%p)\n",
844 hw->name, __func__, fifon, len,
845 fifo->dch, fifo->bch, fifo->ech);
Karsten Keil69f52ad2009-01-09 16:20:51 +0100846
847 if (!len)
848 return;
849
850 if ((!!fifo->dch + !!fifo->bch + !!fifo->ech) != 1) {
851 printk(KERN_DEBUG "%s: %s: undefined channel\n",
852 hw->name, __func__);
853 return;
854 }
855
856 spin_lock(&hw->lock);
857 if (fifo->dch) {
858 rx_skb = fifo->dch->rx_skb;
859 maxlen = fifo->dch->maxlen;
860 hdlc = 1;
861 }
862 if (fifo->bch) {
Karsten Keil7206e652012-05-15 23:51:05 +0000863 maxlen = bchannel_get_rxbuf(fifo->bch, len);
Karsten Keil69f52ad2009-01-09 16:20:51 +0100864 rx_skb = fifo->bch->rx_skb;
Karsten Keil7206e652012-05-15 23:51:05 +0000865 if (maxlen < 0) {
866 if (rx_skb)
867 skb_trim(rx_skb, 0);
868 pr_warning("%s.B%d: No bufferspace for %d bytes\n",
869 hw->name, fifo->bch->nr, len);
870 spin_unlock(&hw->lock);
871 return;
872 }
Karsten Keil69f52ad2009-01-09 16:20:51 +0100873 maxlen = fifo->bch->maxlen;
874 hdlc = test_bit(FLG_HDLC, &fifo->bch->Flags);
875 }
876 if (fifo->ech) {
877 rx_skb = fifo->ech->rx_skb;
878 maxlen = fifo->ech->maxlen;
879 hdlc = 1;
880 }
881
Karsten Keil69f52ad2009-01-09 16:20:51 +0100882 if (fifo->dch || fifo->ech) {
Karsten Keil7206e652012-05-15 23:51:05 +0000883 if (!rx_skb) {
884 rx_skb = mI_alloc_skb(maxlen, GFP_ATOMIC);
885 if (rx_skb) {
886 if (fifo->dch)
887 fifo->dch->rx_skb = rx_skb;
888 if (fifo->ech)
889 fifo->ech->rx_skb = rx_skb;
890 skb_trim(rx_skb, 0);
891 } else {
892 printk(KERN_DEBUG "%s: %s: No mem for rx_skb\n",
893 hw->name, __func__);
894 spin_unlock(&hw->lock);
895 return;
896 }
897 }
Karsten Keil69f52ad2009-01-09 16:20:51 +0100898 /* D/E-Channel SKB range check */
899 if ((rx_skb->len + len) >= MAX_DFRAME_LEN_L1) {
900 printk(KERN_DEBUG "%s: %s: sbk mem exceeded "
Joe Perches475be4d2012-02-19 19:52:38 -0800901 "for fifo(%d) HFCUSB_D_RX\n",
902 hw->name, __func__, fifon);
Karsten Keil69f52ad2009-01-09 16:20:51 +0100903 skb_trim(rx_skb, 0);
904 spin_unlock(&hw->lock);
905 return;
906 }
Karsten Keil69f52ad2009-01-09 16:20:51 +0100907 }
908
909 memcpy(skb_put(rx_skb, len), data, len);
910
911 if (hdlc) {
912 /* we have a complete hdlc packet */
913 if (finish) {
914 if ((rx_skb->len > 3) &&
Joe Perches475be4d2012-02-19 19:52:38 -0800915 (!(rx_skb->data[rx_skb->len - 1]))) {
Karsten Keil69f52ad2009-01-09 16:20:51 +0100916 if (debug & DBG_HFC_FIFO_VERBOSE) {
917 printk(KERN_DEBUG "%s: %s: fifon(%i)"
Joe Perches475be4d2012-02-19 19:52:38 -0800918 " new RX len(%i): ",
919 hw->name, __func__, fifon,
920 rx_skb->len);
Karsten Keil69f52ad2009-01-09 16:20:51 +0100921 i = 0;
922 while (i < rx_skb->len)
923 printk("%02x ",
Joe Perches475be4d2012-02-19 19:52:38 -0800924 rx_skb->data[i++]);
Karsten Keil69f52ad2009-01-09 16:20:51 +0100925 printk("\n");
926 }
927
928 /* remove CRC & status */
929 skb_trim(rx_skb, rx_skb->len - 3);
930
931 if (fifo->dch)
932 recv_Dchannel(fifo->dch);
933 if (fifo->bch)
Karsten Keil034005a2012-05-15 23:51:06 +0000934 recv_Bchannel(fifo->bch, MISDN_ID_ANY,
935 0);
Karsten Keil69f52ad2009-01-09 16:20:51 +0100936 if (fifo->ech)
937 recv_Echannel(fifo->ech,
Joe Perches475be4d2012-02-19 19:52:38 -0800938 &hw->dch);
Karsten Keil69f52ad2009-01-09 16:20:51 +0100939 } else {
940 if (debug & DBG_HFC_FIFO_VERBOSE) {
941 printk(KERN_DEBUG
Joe Perches475be4d2012-02-19 19:52:38 -0800942 "%s: CRC or minlen ERROR fifon(%i) "
943 "RX len(%i): ",
944 hw->name, fifon, rx_skb->len);
Karsten Keil69f52ad2009-01-09 16:20:51 +0100945 i = 0;
946 while (i < rx_skb->len)
947 printk("%02x ",
Joe Perches475be4d2012-02-19 19:52:38 -0800948 rx_skb->data[i++]);
Karsten Keil69f52ad2009-01-09 16:20:51 +0100949 printk("\n");
950 }
951 skb_trim(rx_skb, 0);
952 }
953 }
954 } else {
955 /* deliver transparent data to layer2 */
Karsten Keil034005a2012-05-15 23:51:06 +0000956 recv_Bchannel(fifo->bch, MISDN_ID_ANY, false);
Karsten Keil69f52ad2009-01-09 16:20:51 +0100957 }
958 spin_unlock(&hw->lock);
959}
960
Hannes Eder6c2959a2009-02-12 09:28:40 +0000961static void
Karsten Keil69f52ad2009-01-09 16:20:51 +0100962fill_isoc_urb(struct urb *urb, struct usb_device *dev, unsigned int pipe,
963 void *buf, int num_packets, int packet_size, int interval,
964 usb_complete_t complete, void *context)
965{
966 int k;
967
968 usb_fill_bulk_urb(urb, dev, pipe, buf, packet_size * num_packets,
Joe Perches475be4d2012-02-19 19:52:38 -0800969 complete, context);
Karsten Keil69f52ad2009-01-09 16:20:51 +0100970
971 urb->number_of_packets = num_packets;
972 urb->transfer_flags = URB_ISO_ASAP;
973 urb->actual_length = 0;
974 urb->interval = interval;
975
976 for (k = 0; k < num_packets; k++) {
977 urb->iso_frame_desc[k].offset = packet_size * k;
978 urb->iso_frame_desc[k].length = packet_size;
979 urb->iso_frame_desc[k].actual_length = 0;
980 }
981}
982
983/* receive completion routine for all ISO tx fifos */
984static void
985rx_iso_complete(struct urb *urb)
986{
987 struct iso_urb *context_iso_urb = (struct iso_urb *) urb->context;
988 struct usb_fifo *fifo = context_iso_urb->owner_fifo;
989 struct hfcsusb *hw = fifo->hw;
990 int k, len, errcode, offset, num_isoc_packets, fifon, maxlen,
Joe Perches475be4d2012-02-19 19:52:38 -0800991 status, iso_status, i;
Karsten Keil69f52ad2009-01-09 16:20:51 +0100992 __u8 *buf;
993 static __u8 eof[8];
994 __u8 s0_state;
995
996 fifon = fifo->fifonum;
997 status = urb->status;
998
999 spin_lock(&hw->lock);
1000 if (fifo->stop_gracefull) {
1001 fifo->stop_gracefull = 0;
1002 fifo->active = 0;
1003 spin_unlock(&hw->lock);
1004 return;
1005 }
1006 spin_unlock(&hw->lock);
1007
1008 /*
1009 * ISO transfer only partially completed,
1010 * look at individual frame status for details
1011 */
1012 if (status == -EXDEV) {
1013 if (debug & DEBUG_HW)
1014 printk(KERN_DEBUG "%s: %s: with -EXDEV "
Joe Perches475be4d2012-02-19 19:52:38 -08001015 "urb->status %d, fifonum %d\n",
1016 hw->name, __func__, status, fifon);
Karsten Keil69f52ad2009-01-09 16:20:51 +01001017
1018 /* clear status, so go on with ISO transfers */
1019 status = 0;
1020 }
1021
1022 s0_state = 0;
1023 if (fifo->active && !status) {
1024 num_isoc_packets = iso_packets[fifon];
1025 maxlen = fifo->usb_packet_maxlen;
1026
1027 for (k = 0; k < num_isoc_packets; ++k) {
1028 len = urb->iso_frame_desc[k].actual_length;
1029 offset = urb->iso_frame_desc[k].offset;
1030 buf = context_iso_urb->buffer + offset;
1031 iso_status = urb->iso_frame_desc[k].status;
1032
1033 if (iso_status && (debug & DBG_HFC_FIFO_VERBOSE)) {
1034 printk(KERN_DEBUG "%s: %s: "
Joe Perches475be4d2012-02-19 19:52:38 -08001035 "ISO packet %i, status: %i\n",
1036 hw->name, __func__, k, iso_status);
Karsten Keil69f52ad2009-01-09 16:20:51 +01001037 }
1038
1039 /* USB data log for every D ISO in */
1040 if ((fifon == HFCUSB_D_RX) &&
1041 (debug & DBG_HFC_USB_VERBOSE)) {
1042 printk(KERN_DEBUG
Joe Perches475be4d2012-02-19 19:52:38 -08001043 "%s: %s: %d (%d/%d) len(%d) ",
1044 hw->name, __func__, urb->start_frame,
1045 k, num_isoc_packets - 1,
1046 len);
Karsten Keil69f52ad2009-01-09 16:20:51 +01001047 for (i = 0; i < len; i++)
1048 printk("%x ", buf[i]);
1049 printk("\n");
1050 }
1051
1052 if (!iso_status) {
1053 if (fifo->last_urblen != maxlen) {
1054 /*
1055 * save fifo fill-level threshold bits
1056 * to use them later in TX ISO URB
1057 * completions
1058 */
1059 hw->threshold_mask = buf[1];
1060
1061 if (fifon == HFCUSB_D_RX)
1062 s0_state = (buf[0] >> 4);
1063
1064 eof[fifon] = buf[0] & 1;
1065 if (len > 2)
1066 hfcsusb_rx_frame(fifo, buf + 2,
Joe Perches475be4d2012-02-19 19:52:38 -08001067 len - 2, (len < maxlen)
1068 ? eof[fifon] : 0);
Karsten Keil69f52ad2009-01-09 16:20:51 +01001069 } else
1070 hfcsusb_rx_frame(fifo, buf, len,
Joe Perches475be4d2012-02-19 19:52:38 -08001071 (len < maxlen) ?
1072 eof[fifon] : 0);
Karsten Keil69f52ad2009-01-09 16:20:51 +01001073 fifo->last_urblen = len;
1074 }
1075 }
1076
1077 /* signal S0 layer1 state change */
1078 if ((s0_state) && (hw->initdone) &&
1079 (s0_state != hw->dch.state)) {
1080 hw->dch.state = s0_state;
1081 schedule_event(&hw->dch, FLG_PHCHANGE);
1082 }
1083
1084 fill_isoc_urb(urb, fifo->hw->dev, fifo->pipe,
1085 context_iso_urb->buffer, num_isoc_packets,
1086 fifo->usb_packet_maxlen, fifo->intervall,
1087 (usb_complete_t)rx_iso_complete, urb->context);
1088 errcode = usb_submit_urb(urb, GFP_ATOMIC);
1089 if (errcode < 0) {
1090 if (debug & DEBUG_HW)
1091 printk(KERN_DEBUG "%s: %s: error submitting "
Joe Perches475be4d2012-02-19 19:52:38 -08001092 "ISO URB: %d\n",
1093 hw->name, __func__, errcode);
Karsten Keil69f52ad2009-01-09 16:20:51 +01001094 }
1095 } else {
1096 if (status && (debug & DBG_HFC_URB_INFO))
1097 printk(KERN_DEBUG "%s: %s: rx_iso_complete : "
Joe Perches475be4d2012-02-19 19:52:38 -08001098 "urb->status %d, fifonum %d\n",
1099 hw->name, __func__, status, fifon);
Karsten Keil69f52ad2009-01-09 16:20:51 +01001100 }
1101}
1102
1103/* receive completion routine for all interrupt rx fifos */
1104static void
1105rx_int_complete(struct urb *urb)
1106{
1107 int len, status, i;
1108 __u8 *buf, maxlen, fifon;
1109 struct usb_fifo *fifo = (struct usb_fifo *) urb->context;
1110 struct hfcsusb *hw = fifo->hw;
1111 static __u8 eof[8];
1112
1113 spin_lock(&hw->lock);
1114 if (fifo->stop_gracefull) {
1115 fifo->stop_gracefull = 0;
1116 fifo->active = 0;
1117 spin_unlock(&hw->lock);
1118 return;
1119 }
1120 spin_unlock(&hw->lock);
1121
1122 fifon = fifo->fifonum;
1123 if ((!fifo->active) || (urb->status)) {
1124 if (debug & DBG_HFC_URB_ERROR)
1125 printk(KERN_DEBUG
Joe Perches475be4d2012-02-19 19:52:38 -08001126 "%s: %s: RX-Fifo %i is going down (%i)\n",
1127 hw->name, __func__, fifon, urb->status);
Karsten Keil69f52ad2009-01-09 16:20:51 +01001128
1129 fifo->urb->interval = 0; /* cancel automatic rescheduling */
1130 return;
1131 }
1132 len = urb->actual_length;
1133 buf = fifo->buffer;
1134 maxlen = fifo->usb_packet_maxlen;
1135
1136 /* USB data log for every D INT in */
1137 if ((fifon == HFCUSB_D_RX) && (debug & DBG_HFC_USB_VERBOSE)) {
1138 printk(KERN_DEBUG "%s: %s: D RX INT len(%d) ",
Joe Perches475be4d2012-02-19 19:52:38 -08001139 hw->name, __func__, len);
Karsten Keil69f52ad2009-01-09 16:20:51 +01001140 for (i = 0; i < len; i++)
1141 printk("%02x ", buf[i]);
1142 printk("\n");
1143 }
1144
1145 if (fifo->last_urblen != fifo->usb_packet_maxlen) {
1146 /* the threshold mask is in the 2nd status byte */
1147 hw->threshold_mask = buf[1];
1148
1149 /* signal S0 layer1 state change */
1150 if (hw->initdone && ((buf[0] >> 4) != hw->dch.state)) {
1151 hw->dch.state = (buf[0] >> 4);
1152 schedule_event(&hw->dch, FLG_PHCHANGE);
1153 }
1154
1155 eof[fifon] = buf[0] & 1;
1156 /* if we have more than the 2 status bytes -> collect data */
1157 if (len > 2)
1158 hfcsusb_rx_frame(fifo, buf + 2,
Joe Perches475be4d2012-02-19 19:52:38 -08001159 urb->actual_length - 2,
1160 (len < maxlen) ? eof[fifon] : 0);
Karsten Keil69f52ad2009-01-09 16:20:51 +01001161 } else {
1162 hfcsusb_rx_frame(fifo, buf, urb->actual_length,
1163 (len < maxlen) ? eof[fifon] : 0);
1164 }
1165 fifo->last_urblen = urb->actual_length;
1166
1167 status = usb_submit_urb(urb, GFP_ATOMIC);
1168 if (status) {
1169 if (debug & DEBUG_HW)
1170 printk(KERN_DEBUG "%s: %s: error resubmitting USB\n",
Joe Perches475be4d2012-02-19 19:52:38 -08001171 hw->name, __func__);
Karsten Keil69f52ad2009-01-09 16:20:51 +01001172 }
1173}
1174
1175/* transmit completion routine for all ISO tx fifos */
1176static void
1177tx_iso_complete(struct urb *urb)
1178{
1179 struct iso_urb *context_iso_urb = (struct iso_urb *) urb->context;
1180 struct usb_fifo *fifo = context_iso_urb->owner_fifo;
1181 struct hfcsusb *hw = fifo->hw;
1182 struct sk_buff *tx_skb;
1183 int k, tx_offset, num_isoc_packets, sink, remain, current_len,
Joe Perches475be4d2012-02-19 19:52:38 -08001184 errcode, hdlc, i;
Karsten Keil69f52ad2009-01-09 16:20:51 +01001185 int *tx_idx;
1186 int frame_complete, fifon, status;
1187 __u8 threshbit;
1188
1189 spin_lock(&hw->lock);
1190 if (fifo->stop_gracefull) {
1191 fifo->stop_gracefull = 0;
1192 fifo->active = 0;
1193 spin_unlock(&hw->lock);
1194 return;
1195 }
1196
1197 if (fifo->dch) {
1198 tx_skb = fifo->dch->tx_skb;
1199 tx_idx = &fifo->dch->tx_idx;
1200 hdlc = 1;
1201 } else if (fifo->bch) {
1202 tx_skb = fifo->bch->tx_skb;
1203 tx_idx = &fifo->bch->tx_idx;
1204 hdlc = test_bit(FLG_HDLC, &fifo->bch->Flags);
1205 } else {
1206 printk(KERN_DEBUG "%s: %s: neither BCH nor DCH\n",
Joe Perches475be4d2012-02-19 19:52:38 -08001207 hw->name, __func__);
Karsten Keil69f52ad2009-01-09 16:20:51 +01001208 spin_unlock(&hw->lock);
1209 return;
1210 }
1211
1212 fifon = fifo->fifonum;
1213 status = urb->status;
1214
1215 tx_offset = 0;
1216
1217 /*
1218 * ISO transfer only partially completed,
1219 * look at individual frame status for details
1220 */
1221 if (status == -EXDEV) {
1222 if (debug & DBG_HFC_URB_ERROR)
1223 printk(KERN_DEBUG "%s: %s: "
Joe Perches475be4d2012-02-19 19:52:38 -08001224 "-EXDEV (%i) fifon (%d)\n",
1225 hw->name, __func__, status, fifon);
Karsten Keil69f52ad2009-01-09 16:20:51 +01001226
1227 /* clear status, so go on with ISO transfers */
1228 status = 0;
1229 }
1230
1231 if (fifo->active && !status) {
1232 /* is FifoFull-threshold set for our channel? */
1233 threshbit = (hw->threshold_mask & (1 << fifon));
1234 num_isoc_packets = iso_packets[fifon];
1235
1236 /* predict dataflow to avoid fifo overflow */
1237 if (fifon >= HFCUSB_D_TX)
1238 sink = (threshbit) ? SINK_DMIN : SINK_DMAX;
1239 else
1240 sink = (threshbit) ? SINK_MIN : SINK_MAX;
1241 fill_isoc_urb(urb, fifo->hw->dev, fifo->pipe,
1242 context_iso_urb->buffer, num_isoc_packets,
1243 fifo->usb_packet_maxlen, fifo->intervall,
1244 (usb_complete_t)tx_iso_complete, urb->context);
1245 memset(context_iso_urb->buffer, 0,
1246 sizeof(context_iso_urb->buffer));
1247 frame_complete = 0;
1248
1249 for (k = 0; k < num_isoc_packets; ++k) {
1250 /* analyze tx success of previous ISO packets */
1251 if (debug & DBG_HFC_URB_ERROR) {
1252 errcode = urb->iso_frame_desc[k].status;
1253 if (errcode) {
1254 printk(KERN_DEBUG "%s: %s: "
Joe Perches475be4d2012-02-19 19:52:38 -08001255 "ISO packet %i, status: %i\n",
1256 hw->name, __func__, k, errcode);
Karsten Keil69f52ad2009-01-09 16:20:51 +01001257 }
1258 }
1259
1260 /* Generate next ISO Packets */
1261 if (tx_skb)
1262 remain = tx_skb->len - *tx_idx;
1263 else
1264 remain = 0;
1265
1266 if (remain > 0) {
1267 fifo->bit_line -= sink;
1268 current_len = (0 - fifo->bit_line) / 8;
1269 if (current_len > 14)
1270 current_len = 14;
1271 if (current_len < 0)
1272 current_len = 0;
1273 if (remain < current_len)
1274 current_len = remain;
1275
1276 /* how much bit do we put on the line? */
1277 fifo->bit_line += current_len * 8;
1278
1279 context_iso_urb->buffer[tx_offset] = 0;
1280 if (current_len == remain) {
1281 if (hdlc) {
1282 /* signal frame completion */
1283 context_iso_urb->
Joe Perches475be4d2012-02-19 19:52:38 -08001284 buffer[tx_offset] = 1;
Karsten Keil69f52ad2009-01-09 16:20:51 +01001285 /* add 2 byte flags and 16bit
1286 * CRC at end of ISDN frame */
1287 fifo->bit_line += 32;
1288 }
1289 frame_complete = 1;
1290 }
1291
1292 /* copy tx data to iso-urb buffer */
1293 memcpy(context_iso_urb->buffer + tx_offset + 1,
1294 (tx_skb->data + *tx_idx), current_len);
1295 *tx_idx += current_len;
1296
1297 urb->iso_frame_desc[k].offset = tx_offset;
1298 urb->iso_frame_desc[k].length = current_len + 1;
1299
1300 /* USB data log for every D ISO out */
1301 if ((fifon == HFCUSB_D_RX) &&
1302 (debug & DBG_HFC_USB_VERBOSE)) {
1303 printk(KERN_DEBUG
Joe Perches475be4d2012-02-19 19:52:38 -08001304 "%s: %s (%d/%d) offs(%d) len(%d) ",
1305 hw->name, __func__,
1306 k, num_isoc_packets - 1,
1307 urb->iso_frame_desc[k].offset,
1308 urb->iso_frame_desc[k].length);
Karsten Keil69f52ad2009-01-09 16:20:51 +01001309
1310 for (i = urb->iso_frame_desc[k].offset;
1311 i < (urb->iso_frame_desc[k].offset
Joe Perches475be4d2012-02-19 19:52:38 -08001312 + urb->iso_frame_desc[k].length);
Karsten Keil69f52ad2009-01-09 16:20:51 +01001313 i++)
1314 printk("%x ",
Joe Perches475be4d2012-02-19 19:52:38 -08001315 context_iso_urb->buffer[i]);
Karsten Keil69f52ad2009-01-09 16:20:51 +01001316
1317 printk(" skb->len(%i) tx-idx(%d)\n",
Joe Perches475be4d2012-02-19 19:52:38 -08001318 tx_skb->len, *tx_idx);
Karsten Keil69f52ad2009-01-09 16:20:51 +01001319 }
1320
1321 tx_offset += (current_len + 1);
1322 } else {
1323 urb->iso_frame_desc[k].offset = tx_offset++;
1324 urb->iso_frame_desc[k].length = 1;
1325 /* we lower data margin every msec */
1326 fifo->bit_line -= sink;
1327 if (fifo->bit_line < BITLINE_INF)
1328 fifo->bit_line = BITLINE_INF;
1329 }
1330
1331 if (frame_complete) {
1332 frame_complete = 0;
1333
1334 if (debug & DBG_HFC_FIFO_VERBOSE) {
1335 printk(KERN_DEBUG "%s: %s: "
Joe Perches475be4d2012-02-19 19:52:38 -08001336 "fifon(%i) new TX len(%i): ",
1337 hw->name, __func__,
1338 fifon, tx_skb->len);
Karsten Keil69f52ad2009-01-09 16:20:51 +01001339 i = 0;
1340 while (i < tx_skb->len)
1341 printk("%02x ",
Joe Perches475be4d2012-02-19 19:52:38 -08001342 tx_skb->data[i++]);
Karsten Keil69f52ad2009-01-09 16:20:51 +01001343 printk("\n");
1344 }
1345
1346 dev_kfree_skb(tx_skb);
1347 tx_skb = NULL;
1348 if (fifo->dch && get_next_dframe(fifo->dch))
1349 tx_skb = fifo->dch->tx_skb;
1350 else if (fifo->bch &&
Karsten Keil8bfddfb2012-05-15 23:51:02 +00001351 get_next_bframe(fifo->bch))
Karsten Keil69f52ad2009-01-09 16:20:51 +01001352 tx_skb = fifo->bch->tx_skb;
Karsten Keil69f52ad2009-01-09 16:20:51 +01001353 }
1354 }
1355 errcode = usb_submit_urb(urb, GFP_ATOMIC);
1356 if (errcode < 0) {
1357 if (debug & DEBUG_HW)
1358 printk(KERN_DEBUG
Joe Perches475be4d2012-02-19 19:52:38 -08001359 "%s: %s: error submitting ISO URB: %d \n",
1360 hw->name, __func__, errcode);
Karsten Keil69f52ad2009-01-09 16:20:51 +01001361 }
1362
1363 /*
1364 * abuse DChannel tx iso completion to trigger NT mode state
1365 * changes tx_iso_complete is assumed to be called every
1366 * fifo->intervall (ms)
1367 */
1368 if ((fifon == HFCUSB_D_TX) && (hw->protocol == ISDN_P_NT_S0)
1369 && (hw->timers & NT_ACTIVATION_TIMER)) {
1370 if ((--hw->nt_timer) < 0)
1371 schedule_event(&hw->dch, FLG_PHCHANGE);
1372 }
1373
1374 } else {
1375 if (status && (debug & DBG_HFC_URB_ERROR))
1376 printk(KERN_DEBUG "%s: %s: urb->status %s (%i)"
Joe Perches475be4d2012-02-19 19:52:38 -08001377 "fifonum=%d\n",
1378 hw->name, __func__,
1379 symbolic(urb_errlist, status), status, fifon);
Karsten Keil69f52ad2009-01-09 16:20:51 +01001380 }
1381 spin_unlock(&hw->lock);
1382}
1383
1384/*
1385 * allocs urbs and start isoc transfer with two pending urbs to avoid
1386 * gaps in the transfer chain
1387 */
1388static int
1389start_isoc_chain(struct usb_fifo *fifo, int num_packets_per_urb,
1390 usb_complete_t complete, int packet_size)
1391{
1392 struct hfcsusb *hw = fifo->hw;
1393 int i, k, errcode;
1394
1395 if (debug)
1396 printk(KERN_DEBUG "%s: %s: fifo %i\n",
Joe Perches475be4d2012-02-19 19:52:38 -08001397 hw->name, __func__, fifo->fifonum);
Karsten Keil69f52ad2009-01-09 16:20:51 +01001398
1399 /* allocate Memory for Iso out Urbs */
1400 for (i = 0; i < 2; i++) {
1401 if (!(fifo->iso[i].urb)) {
1402 fifo->iso[i].urb =
Joe Perches475be4d2012-02-19 19:52:38 -08001403 usb_alloc_urb(num_packets_per_urb, GFP_KERNEL);
Karsten Keil69f52ad2009-01-09 16:20:51 +01001404 if (!(fifo->iso[i].urb)) {
1405 printk(KERN_DEBUG
Joe Perches475be4d2012-02-19 19:52:38 -08001406 "%s: %s: alloc urb for fifo %i failed",
1407 hw->name, __func__, fifo->fifonum);
Karsten Keil69f52ad2009-01-09 16:20:51 +01001408 }
1409 fifo->iso[i].owner_fifo = (struct usb_fifo *) fifo;
1410 fifo->iso[i].indx = i;
1411
1412 /* Init the first iso */
1413 if (ISO_BUFFER_SIZE >=
1414 (fifo->usb_packet_maxlen *
1415 num_packets_per_urb)) {
1416 fill_isoc_urb(fifo->iso[i].urb,
Joe Perches475be4d2012-02-19 19:52:38 -08001417 fifo->hw->dev, fifo->pipe,
1418 fifo->iso[i].buffer,
1419 num_packets_per_urb,
1420 fifo->usb_packet_maxlen,
1421 fifo->intervall, complete,
1422 &fifo->iso[i]);
Karsten Keil69f52ad2009-01-09 16:20:51 +01001423 memset(fifo->iso[i].buffer, 0,
1424 sizeof(fifo->iso[i].buffer));
1425
1426 for (k = 0; k < num_packets_per_urb; k++) {
1427 fifo->iso[i].urb->
Joe Perches475be4d2012-02-19 19:52:38 -08001428 iso_frame_desc[k].offset =
1429 k * packet_size;
Karsten Keil69f52ad2009-01-09 16:20:51 +01001430 fifo->iso[i].urb->
Joe Perches475be4d2012-02-19 19:52:38 -08001431 iso_frame_desc[k].length =
1432 packet_size;
Karsten Keil69f52ad2009-01-09 16:20:51 +01001433 }
1434 } else {
1435 printk(KERN_DEBUG
Joe Perches475be4d2012-02-19 19:52:38 -08001436 "%s: %s: ISO Buffer size to small!\n",
1437 hw->name, __func__);
Karsten Keil69f52ad2009-01-09 16:20:51 +01001438 }
1439 }
1440 fifo->bit_line = BITLINE_INF;
1441
1442 errcode = usb_submit_urb(fifo->iso[i].urb, GFP_KERNEL);
1443 fifo->active = (errcode >= 0) ? 1 : 0;
1444 fifo->stop_gracefull = 0;
1445 if (errcode < 0) {
1446 printk(KERN_DEBUG "%s: %s: %s URB nr:%d\n",
Joe Perches475be4d2012-02-19 19:52:38 -08001447 hw->name, __func__,
1448 symbolic(urb_errlist, errcode), i);
Karsten Keil69f52ad2009-01-09 16:20:51 +01001449 }
1450 }
1451 return fifo->active;
1452}
1453
1454static void
1455stop_iso_gracefull(struct usb_fifo *fifo)
1456{
1457 struct hfcsusb *hw = fifo->hw;
1458 int i, timeout;
1459 u_long flags;
1460
1461 for (i = 0; i < 2; i++) {
1462 spin_lock_irqsave(&hw->lock, flags);
1463 if (debug)
1464 printk(KERN_DEBUG "%s: %s for fifo %i.%i\n",
1465 hw->name, __func__, fifo->fifonum, i);
1466 fifo->stop_gracefull = 1;
1467 spin_unlock_irqrestore(&hw->lock, flags);
1468 }
1469
1470 for (i = 0; i < 2; i++) {
1471 timeout = 3;
1472 while (fifo->stop_gracefull && timeout--)
Joe Perches475be4d2012-02-19 19:52:38 -08001473 schedule_timeout_interruptible((HZ / 1000) * 16);
Karsten Keil69f52ad2009-01-09 16:20:51 +01001474 if (debug && fifo->stop_gracefull)
1475 printk(KERN_DEBUG "%s: ERROR %s for fifo %i.%i\n",
Joe Perches475be4d2012-02-19 19:52:38 -08001476 hw->name, __func__, fifo->fifonum, i);
Karsten Keil69f52ad2009-01-09 16:20:51 +01001477 }
1478}
1479
1480static void
1481stop_int_gracefull(struct usb_fifo *fifo)
1482{
1483 struct hfcsusb *hw = fifo->hw;
1484 int timeout;
1485 u_long flags;
1486
1487 spin_lock_irqsave(&hw->lock, flags);
1488 if (debug)
1489 printk(KERN_DEBUG "%s: %s for fifo %i\n",
1490 hw->name, __func__, fifo->fifonum);
1491 fifo->stop_gracefull = 1;
1492 spin_unlock_irqrestore(&hw->lock, flags);
1493
1494 timeout = 3;
1495 while (fifo->stop_gracefull && timeout--)
Joe Perches475be4d2012-02-19 19:52:38 -08001496 schedule_timeout_interruptible((HZ / 1000) * 3);
Karsten Keil69f52ad2009-01-09 16:20:51 +01001497 if (debug && fifo->stop_gracefull)
1498 printk(KERN_DEBUG "%s: ERROR %s for fifo %i\n",
1499 hw->name, __func__, fifo->fifonum);
1500}
1501
1502/* start the interrupt transfer for the given fifo */
1503static void
1504start_int_fifo(struct usb_fifo *fifo)
1505{
1506 struct hfcsusb *hw = fifo->hw;
1507 int errcode;
1508
1509 if (debug)
1510 printk(KERN_DEBUG "%s: %s: INT IN fifo:%d\n",
Joe Perches475be4d2012-02-19 19:52:38 -08001511 hw->name, __func__, fifo->fifonum);
Karsten Keil69f52ad2009-01-09 16:20:51 +01001512
1513 if (!fifo->urb) {
1514 fifo->urb = usb_alloc_urb(0, GFP_KERNEL);
1515 if (!fifo->urb)
1516 return;
1517 }
1518 usb_fill_int_urb(fifo->urb, fifo->hw->dev, fifo->pipe,
Joe Perches475be4d2012-02-19 19:52:38 -08001519 fifo->buffer, fifo->usb_packet_maxlen,
1520 (usb_complete_t)rx_int_complete, fifo, fifo->intervall);
Karsten Keil69f52ad2009-01-09 16:20:51 +01001521 fifo->active = 1;
1522 fifo->stop_gracefull = 0;
1523 errcode = usb_submit_urb(fifo->urb, GFP_KERNEL);
1524 if (errcode) {
1525 printk(KERN_DEBUG "%s: %s: submit URB: status:%i\n",
Joe Perches475be4d2012-02-19 19:52:38 -08001526 hw->name, __func__, errcode);
Karsten Keil69f52ad2009-01-09 16:20:51 +01001527 fifo->active = 0;
1528 }
1529}
1530
1531static void
1532setPortMode(struct hfcsusb *hw)
1533{
1534 if (debug & DEBUG_HW)
1535 printk(KERN_DEBUG "%s: %s %s\n", hw->name, __func__,
Joe Perches475be4d2012-02-19 19:52:38 -08001536 (hw->protocol == ISDN_P_TE_S0) ? "TE" : "NT");
Karsten Keil69f52ad2009-01-09 16:20:51 +01001537
1538 if (hw->protocol == ISDN_P_TE_S0) {
1539 write_reg(hw, HFCUSB_SCTRL, 0x40);
1540 write_reg(hw, HFCUSB_SCTRL_E, 0x00);
1541 write_reg(hw, HFCUSB_CLKDEL, CLKDEL_TE);
1542 write_reg(hw, HFCUSB_STATES, 3 | 0x10);
1543 write_reg(hw, HFCUSB_STATES, 3);
1544 } else {
1545 write_reg(hw, HFCUSB_SCTRL, 0x44);
1546 write_reg(hw, HFCUSB_SCTRL_E, 0x09);
1547 write_reg(hw, HFCUSB_CLKDEL, CLKDEL_NT);
1548 write_reg(hw, HFCUSB_STATES, 1 | 0x10);
1549 write_reg(hw, HFCUSB_STATES, 1);
1550 }
1551}
1552
1553static void
1554reset_hfcsusb(struct hfcsusb *hw)
1555{
1556 struct usb_fifo *fifo;
1557 int i;
1558
1559 if (debug & DEBUG_HW)
1560 printk(KERN_DEBUG "%s: %s\n", hw->name, __func__);
1561
1562 /* do Chip reset */
1563 write_reg(hw, HFCUSB_CIRM, 8);
1564
1565 /* aux = output, reset off */
1566 write_reg(hw, HFCUSB_CIRM, 0x10);
1567
1568 /* set USB_SIZE to match the wMaxPacketSize for INT or BULK transfers */
1569 write_reg(hw, HFCUSB_USB_SIZE, (hw->packet_size / 8) |
Joe Perches475be4d2012-02-19 19:52:38 -08001570 ((hw->packet_size / 8) << 4));
Karsten Keil69f52ad2009-01-09 16:20:51 +01001571
1572 /* set USB_SIZE_I to match the the wMaxPacketSize for ISO transfers */
1573 write_reg(hw, HFCUSB_USB_SIZE_I, hw->iso_packet_size);
1574
1575 /* enable PCM/GCI master mode */
1576 write_reg(hw, HFCUSB_MST_MODE1, 0); /* set default values */
1577 write_reg(hw, HFCUSB_MST_MODE0, 1); /* enable master mode */
1578
1579 /* init the fifos */
1580 write_reg(hw, HFCUSB_F_THRES,
Joe Perches475be4d2012-02-19 19:52:38 -08001581 (HFCUSB_TX_THRESHOLD / 8) | ((HFCUSB_RX_THRESHOLD / 8) << 4));
Karsten Keil69f52ad2009-01-09 16:20:51 +01001582
1583 fifo = hw->fifos;
1584 for (i = 0; i < HFCUSB_NUM_FIFOS; i++) {
1585 write_reg(hw, HFCUSB_FIFO, i); /* select the desired fifo */
1586 fifo[i].max_size =
Joe Perches475be4d2012-02-19 19:52:38 -08001587 (i <= HFCUSB_B2_RX) ? MAX_BCH_SIZE : MAX_DFRAME_LEN;
Karsten Keil69f52ad2009-01-09 16:20:51 +01001588 fifo[i].last_urblen = 0;
1589
1590 /* set 2 bit for D- & E-channel */
1591 write_reg(hw, HFCUSB_HDLC_PAR, ((i <= HFCUSB_B2_RX) ? 0 : 2));
1592
1593 /* enable all fifos */
1594 if (i == HFCUSB_D_TX)
1595 write_reg(hw, HFCUSB_CON_HDLC,
Joe Perches475be4d2012-02-19 19:52:38 -08001596 (hw->protocol == ISDN_P_NT_S0) ? 0x08 : 0x09);
Karsten Keil69f52ad2009-01-09 16:20:51 +01001597 else
1598 write_reg(hw, HFCUSB_CON_HDLC, 0x08);
1599 write_reg(hw, HFCUSB_INC_RES_F, 2); /* reset the fifo */
1600 }
1601
1602 write_reg(hw, HFCUSB_SCTRL_R, 0); /* disable both B receivers */
1603 handle_led(hw, LED_POWER_ON);
1604}
1605
1606/* start USB data pipes dependand on device's endpoint configuration */
1607static void
1608hfcsusb_start_endpoint(struct hfcsusb *hw, int channel)
1609{
1610 /* quick check if endpoint already running */
1611 if ((channel == HFC_CHAN_D) && (hw->fifos[HFCUSB_D_RX].active))
1612 return;
1613 if ((channel == HFC_CHAN_B1) && (hw->fifos[HFCUSB_B1_RX].active))
1614 return;
1615 if ((channel == HFC_CHAN_B2) && (hw->fifos[HFCUSB_B2_RX].active))
1616 return;
1617 if ((channel == HFC_CHAN_E) && (hw->fifos[HFCUSB_PCM_RX].active))
1618 return;
1619
1620 /* start rx endpoints using USB INT IN method */
1621 if (hw->cfg_used == CNF_3INT3ISO || hw->cfg_used == CNF_4INT3ISO)
Joe Perches475be4d2012-02-19 19:52:38 -08001622 start_int_fifo(hw->fifos + channel * 2 + 1);
Karsten Keil69f52ad2009-01-09 16:20:51 +01001623
1624 /* start rx endpoints using USB ISO IN method */
1625 if (hw->cfg_used == CNF_3ISO3ISO || hw->cfg_used == CNF_4ISO3ISO) {
1626 switch (channel) {
1627 case HFC_CHAN_D:
1628 start_isoc_chain(hw->fifos + HFCUSB_D_RX,
Joe Perches475be4d2012-02-19 19:52:38 -08001629 ISOC_PACKETS_D,
1630 (usb_complete_t)rx_iso_complete,
1631 16);
Karsten Keil69f52ad2009-01-09 16:20:51 +01001632 break;
1633 case HFC_CHAN_E:
1634 start_isoc_chain(hw->fifos + HFCUSB_PCM_RX,
Joe Perches475be4d2012-02-19 19:52:38 -08001635 ISOC_PACKETS_D,
1636 (usb_complete_t)rx_iso_complete,
1637 16);
Karsten Keil69f52ad2009-01-09 16:20:51 +01001638 break;
1639 case HFC_CHAN_B1:
1640 start_isoc_chain(hw->fifos + HFCUSB_B1_RX,
Joe Perches475be4d2012-02-19 19:52:38 -08001641 ISOC_PACKETS_B,
1642 (usb_complete_t)rx_iso_complete,
1643 16);
Karsten Keil69f52ad2009-01-09 16:20:51 +01001644 break;
1645 case HFC_CHAN_B2:
1646 start_isoc_chain(hw->fifos + HFCUSB_B2_RX,
Joe Perches475be4d2012-02-19 19:52:38 -08001647 ISOC_PACKETS_B,
1648 (usb_complete_t)rx_iso_complete,
1649 16);
Karsten Keil69f52ad2009-01-09 16:20:51 +01001650 break;
1651 }
1652 }
1653
1654 /* start tx endpoints using USB ISO OUT method */
1655 switch (channel) {
1656 case HFC_CHAN_D:
1657 start_isoc_chain(hw->fifos + HFCUSB_D_TX,
Joe Perches475be4d2012-02-19 19:52:38 -08001658 ISOC_PACKETS_B,
1659 (usb_complete_t)tx_iso_complete, 1);
Karsten Keil69f52ad2009-01-09 16:20:51 +01001660 break;
1661 case HFC_CHAN_B1:
1662 start_isoc_chain(hw->fifos + HFCUSB_B1_TX,
Joe Perches475be4d2012-02-19 19:52:38 -08001663 ISOC_PACKETS_D,
1664 (usb_complete_t)tx_iso_complete, 1);
Karsten Keil69f52ad2009-01-09 16:20:51 +01001665 break;
1666 case HFC_CHAN_B2:
1667 start_isoc_chain(hw->fifos + HFCUSB_B2_TX,
Joe Perches475be4d2012-02-19 19:52:38 -08001668 ISOC_PACKETS_B,
1669 (usb_complete_t)tx_iso_complete, 1);
Karsten Keil69f52ad2009-01-09 16:20:51 +01001670 break;
1671 }
1672}
1673
1674/* stop USB data pipes dependand on device's endpoint configuration */
1675static void
1676hfcsusb_stop_endpoint(struct hfcsusb *hw, int channel)
1677{
1678 /* quick check if endpoint currently running */
1679 if ((channel == HFC_CHAN_D) && (!hw->fifos[HFCUSB_D_RX].active))
1680 return;
1681 if ((channel == HFC_CHAN_B1) && (!hw->fifos[HFCUSB_B1_RX].active))
1682 return;
1683 if ((channel == HFC_CHAN_B2) && (!hw->fifos[HFCUSB_B2_RX].active))
1684 return;
1685 if ((channel == HFC_CHAN_E) && (!hw->fifos[HFCUSB_PCM_RX].active))
1686 return;
1687
1688 /* rx endpoints using USB INT IN method */
1689 if (hw->cfg_used == CNF_3INT3ISO || hw->cfg_used == CNF_4INT3ISO)
Joe Perches475be4d2012-02-19 19:52:38 -08001690 stop_int_gracefull(hw->fifos + channel * 2 + 1);
Karsten Keil69f52ad2009-01-09 16:20:51 +01001691
1692 /* rx endpoints using USB ISO IN method */
1693 if (hw->cfg_used == CNF_3ISO3ISO || hw->cfg_used == CNF_4ISO3ISO)
Joe Perches475be4d2012-02-19 19:52:38 -08001694 stop_iso_gracefull(hw->fifos + channel * 2 + 1);
Karsten Keil69f52ad2009-01-09 16:20:51 +01001695
1696 /* tx endpoints using USB ISO OUT method */
1697 if (channel != HFC_CHAN_E)
Joe Perches475be4d2012-02-19 19:52:38 -08001698 stop_iso_gracefull(hw->fifos + channel * 2);
Karsten Keil69f52ad2009-01-09 16:20:51 +01001699}
1700
1701
1702/* Hardware Initialization */
Hannes Eder6c2959a2009-02-12 09:28:40 +00001703static int
Karsten Keil69f52ad2009-01-09 16:20:51 +01001704setup_hfcsusb(struct hfcsusb *hw)
1705{
Karsten Keil69f52ad2009-01-09 16:20:51 +01001706 u_char b;
1707
1708 if (debug & DBG_HFC_CALL_TRACE)
1709 printk(KERN_DEBUG "%s: %s\n", hw->name, __func__);
1710
1711 /* check the chip id */
1712 if (read_reg_atomic(hw, HFCUSB_CHIP_ID, &b) != 1) {
1713 printk(KERN_DEBUG "%s: %s: cannot read chip id\n",
Joe Perches475be4d2012-02-19 19:52:38 -08001714 hw->name, __func__);
Karsten Keil69f52ad2009-01-09 16:20:51 +01001715 return 1;
1716 }
1717 if (b != HFCUSB_CHIPID) {
1718 printk(KERN_DEBUG "%s: %s: Invalid chip id 0x%02x\n",
Joe Perches475be4d2012-02-19 19:52:38 -08001719 hw->name, __func__, b);
Karsten Keil69f52ad2009-01-09 16:20:51 +01001720 return 1;
1721 }
1722
1723 /* first set the needed config, interface and alternate */
David S. Miller3c76c582011-04-17 16:35:27 -07001724 (void) usb_set_interface(hw->dev, hw->if_used, hw->alt_used);
Karsten Keil69f52ad2009-01-09 16:20:51 +01001725
1726 hw->led_state = 0;
1727
1728 /* init the background machinery for control requests */
1729 hw->ctrl_read.bRequestType = 0xc0;
1730 hw->ctrl_read.bRequest = 1;
1731 hw->ctrl_read.wLength = cpu_to_le16(1);
1732 hw->ctrl_write.bRequestType = 0x40;
1733 hw->ctrl_write.bRequest = 0;
1734 hw->ctrl_write.wLength = 0;
1735 usb_fill_control_urb(hw->ctrl_urb, hw->dev, hw->ctrl_out_pipe,
Joe Perches475be4d2012-02-19 19:52:38 -08001736 (u_char *)&hw->ctrl_write, NULL, 0,
1737 (usb_complete_t)ctrl_complete, hw);
Karsten Keil69f52ad2009-01-09 16:20:51 +01001738
1739 reset_hfcsusb(hw);
1740 return 0;
1741}
1742
1743static void
1744release_hw(struct hfcsusb *hw)
1745{
1746 if (debug & DBG_HFC_CALL_TRACE)
1747 printk(KERN_DEBUG "%s: %s\n", hw->name, __func__);
1748
1749 /*
1750 * stop all endpoints gracefully
1751 * TODO: mISDN_core should generate CLOSE_CHANNEL
1752 * signals after calling mISDN_unregister_device()
1753 */
1754 hfcsusb_stop_endpoint(hw, HFC_CHAN_D);
1755 hfcsusb_stop_endpoint(hw, HFC_CHAN_B1);
1756 hfcsusb_stop_endpoint(hw, HFC_CHAN_B2);
1757 if (hw->fifos[HFCUSB_PCM_RX].pipe)
1758 hfcsusb_stop_endpoint(hw, HFC_CHAN_E);
1759 if (hw->protocol == ISDN_P_TE_S0)
1760 l1_event(hw->dch.l1, CLOSE_CHANNEL);
1761
1762 mISDN_unregister_device(&hw->dch.dev);
1763 mISDN_freebchannel(&hw->bch[1]);
1764 mISDN_freebchannel(&hw->bch[0]);
1765 mISDN_freedchannel(&hw->dch);
1766
1767 if (hw->ctrl_urb) {
1768 usb_kill_urb(hw->ctrl_urb);
1769 usb_free_urb(hw->ctrl_urb);
1770 hw->ctrl_urb = NULL;
1771 }
1772
1773 if (hw->intf)
1774 usb_set_intfdata(hw->intf, NULL);
1775 list_del(&hw->list);
1776 kfree(hw);
1777 hw = NULL;
1778}
1779
1780static void
1781deactivate_bchannel(struct bchannel *bch)
1782{
1783 struct hfcsusb *hw = bch->hw;
1784 u_long flags;
1785
1786 if (bch->debug & DEBUG_HW)
1787 printk(KERN_DEBUG "%s: %s: bch->nr(%i)\n",
Joe Perches475be4d2012-02-19 19:52:38 -08001788 hw->name, __func__, bch->nr);
Karsten Keil69f52ad2009-01-09 16:20:51 +01001789
1790 spin_lock_irqsave(&hw->lock, flags);
Karsten Keilfb286f02009-07-09 10:02:29 +02001791 mISDN_clear_bchannel(bch);
Karsten Keil69f52ad2009-01-09 16:20:51 +01001792 spin_unlock_irqrestore(&hw->lock, flags);
1793 hfcsusb_setup_bch(bch, ISDN_P_NONE);
Martin Bachem37952cf2012-05-15 23:51:04 +00001794 hfcsusb_stop_endpoint(hw, bch->nr - 1);
Karsten Keil69f52ad2009-01-09 16:20:51 +01001795}
1796
1797/*
1798 * Layer 1 B-channel hardware access
1799 */
1800static int
1801hfc_bctrl(struct mISDNchannel *ch, u_int cmd, void *arg)
1802{
1803 struct bchannel *bch = container_of(ch, struct bchannel, ch);
1804 int ret = -EINVAL;
1805
1806 if (bch->debug & DEBUG_HW)
1807 printk(KERN_DEBUG "%s: cmd:%x %p\n", __func__, cmd, arg);
1808
1809 switch (cmd) {
1810 case HW_TESTRX_RAW:
1811 case HW_TESTRX_HDLC:
1812 case HW_TESTRX_OFF:
1813 ret = -EINVAL;
1814 break;
1815
1816 case CLOSE_CHANNEL:
1817 test_and_clear_bit(FLG_OPEN, &bch->Flags);
Karsten Keil13681122012-05-15 23:51:01 +00001818 deactivate_bchannel(bch);
Karsten Keil69f52ad2009-01-09 16:20:51 +01001819 ch->protocol = ISDN_P_NONE;
1820 ch->peer = NULL;
1821 module_put(THIS_MODULE);
1822 ret = 0;
1823 break;
1824 case CONTROL_CHANNEL:
1825 ret = channel_bctrl(bch, arg);
1826 break;
1827 default:
1828 printk(KERN_WARNING "%s: unknown prim(%x)\n",
Joe Perches475be4d2012-02-19 19:52:38 -08001829 __func__, cmd);
Karsten Keil69f52ad2009-01-09 16:20:51 +01001830 }
1831 return ret;
1832}
1833
1834static int
1835setup_instance(struct hfcsusb *hw, struct device *parent)
1836{
1837 u_long flags;
1838 int err, i;
1839
1840 if (debug & DBG_HFC_CALL_TRACE)
1841 printk(KERN_DEBUG "%s: %s\n", hw->name, __func__);
1842
1843 spin_lock_init(&hw->ctrl_lock);
1844 spin_lock_init(&hw->lock);
1845
1846 mISDN_initdchannel(&hw->dch, MAX_DFRAME_LEN_L1, ph_state);
1847 hw->dch.debug = debug & 0xFFFF;
1848 hw->dch.hw = hw;
1849 hw->dch.dev.Dprotocols = (1 << ISDN_P_TE_S0) | (1 << ISDN_P_NT_S0);
1850 hw->dch.dev.D.send = hfcusb_l2l1D;
1851 hw->dch.dev.D.ctrl = hfc_dctrl;
1852
1853 /* enable E-Channel logging */
1854 if (hw->fifos[HFCUSB_PCM_RX].pipe)
1855 mISDN_initdchannel(&hw->ech, MAX_DFRAME_LEN_L1, NULL);
1856
1857 hw->dch.dev.Bprotocols = (1 << (ISDN_P_B_RAW & ISDN_P_B_MASK)) |
Joe Perches475be4d2012-02-19 19:52:38 -08001858 (1 << (ISDN_P_B_HDLC & ISDN_P_B_MASK));
Karsten Keil69f52ad2009-01-09 16:20:51 +01001859 hw->dch.dev.nrbchan = 2;
1860 for (i = 0; i < 2; i++) {
1861 hw->bch[i].nr = i + 1;
1862 set_channelmap(i + 1, hw->dch.dev.channelmap);
1863 hw->bch[i].debug = debug;
Karsten Keil034005a2012-05-15 23:51:06 +00001864 mISDN_initbchannel(&hw->bch[i], MAX_DATA_MEM, poll >> 1);
Karsten Keil69f52ad2009-01-09 16:20:51 +01001865 hw->bch[i].hw = hw;
1866 hw->bch[i].ch.send = hfcusb_l2l1B;
1867 hw->bch[i].ch.ctrl = hfc_bctrl;
1868 hw->bch[i].ch.nr = i + 1;
1869 list_add(&hw->bch[i].ch.list, &hw->dch.dev.bchannels);
1870 }
1871
1872 hw->fifos[HFCUSB_B1_TX].bch = &hw->bch[0];
1873 hw->fifos[HFCUSB_B1_RX].bch = &hw->bch[0];
1874 hw->fifos[HFCUSB_B2_TX].bch = &hw->bch[1];
1875 hw->fifos[HFCUSB_B2_RX].bch = &hw->bch[1];
1876 hw->fifos[HFCUSB_D_TX].dch = &hw->dch;
1877 hw->fifos[HFCUSB_D_RX].dch = &hw->dch;
1878 hw->fifos[HFCUSB_PCM_RX].ech = &hw->ech;
1879 hw->fifos[HFCUSB_PCM_TX].ech = &hw->ech;
1880
1881 err = setup_hfcsusb(hw);
1882 if (err)
1883 goto out;
1884
1885 snprintf(hw->name, MISDN_MAX_IDLEN - 1, "%s.%d", DRIVER_NAME,
Joe Perches475be4d2012-02-19 19:52:38 -08001886 hfcsusb_cnt + 1);
Karsten Keil69f52ad2009-01-09 16:20:51 +01001887 printk(KERN_INFO "%s: registered as '%s'\n",
Joe Perches475be4d2012-02-19 19:52:38 -08001888 DRIVER_NAME, hw->name);
Karsten Keil69f52ad2009-01-09 16:20:51 +01001889
1890 err = mISDN_register_device(&hw->dch.dev, parent, hw->name);
1891 if (err)
1892 goto out;
1893
1894 hfcsusb_cnt++;
1895 write_lock_irqsave(&HFClock, flags);
1896 list_add_tail(&hw->list, &HFClist);
1897 write_unlock_irqrestore(&HFClock, flags);
1898 return 0;
1899
1900out:
1901 mISDN_freebchannel(&hw->bch[1]);
1902 mISDN_freebchannel(&hw->bch[0]);
1903 mISDN_freedchannel(&hw->dch);
1904 kfree(hw);
1905 return err;
1906}
1907
1908static int
1909hfcsusb_probe(struct usb_interface *intf, const struct usb_device_id *id)
1910{
1911 struct hfcsusb *hw;
1912 struct usb_device *dev = interface_to_usbdev(intf);
1913 struct usb_host_interface *iface = intf->cur_altsetting;
1914 struct usb_host_interface *iface_used = NULL;
1915 struct usb_host_endpoint *ep;
1916 struct hfcsusb_vdata *driver_info;
1917 int ifnum = iface->desc.bInterfaceNumber, i, idx, alt_idx,
Joe Perches475be4d2012-02-19 19:52:38 -08001918 probe_alt_setting, vend_idx, cfg_used, *vcf, attr, cfg_found,
1919 ep_addr, cmptbl[16], small_match, iso_packet_size, packet_size,
1920 alt_used = 0;
Karsten Keil69f52ad2009-01-09 16:20:51 +01001921
1922 vend_idx = 0xffff;
1923 for (i = 0; hfcsusb_idtab[i].idVendor; i++) {
1924 if ((le16_to_cpu(dev->descriptor.idVendor)
Joe Perches475be4d2012-02-19 19:52:38 -08001925 == hfcsusb_idtab[i].idVendor) &&
Karsten Keil69f52ad2009-01-09 16:20:51 +01001926 (le16_to_cpu(dev->descriptor.idProduct)
Joe Perches475be4d2012-02-19 19:52:38 -08001927 == hfcsusb_idtab[i].idProduct)) {
Karsten Keil69f52ad2009-01-09 16:20:51 +01001928 vend_idx = i;
1929 continue;
1930 }
1931 }
1932
1933 printk(KERN_DEBUG
Joe Perches475be4d2012-02-19 19:52:38 -08001934 "%s: interface(%d) actalt(%d) minor(%d) vend_idx(%d)\n",
1935 __func__, ifnum, iface->desc.bAlternateSetting,
1936 intf->minor, vend_idx);
Karsten Keil69f52ad2009-01-09 16:20:51 +01001937
1938 if (vend_idx == 0xffff) {
1939 printk(KERN_WARNING
Joe Perches475be4d2012-02-19 19:52:38 -08001940 "%s: no valid vendor found in USB descriptor\n",
1941 __func__);
Karsten Keil69f52ad2009-01-09 16:20:51 +01001942 return -EIO;
1943 }
1944 /* if vendor and product ID is OK, start probing alternate settings */
1945 alt_idx = 0;
1946 small_match = -1;
1947
1948 /* default settings */
1949 iso_packet_size = 16;
1950 packet_size = 64;
1951
1952 while (alt_idx < intf->num_altsetting) {
1953 iface = intf->altsetting + alt_idx;
1954 probe_alt_setting = iface->desc.bAlternateSetting;
1955 cfg_used = 0;
1956
1957 while (validconf[cfg_used][0]) {
1958 cfg_found = 1;
1959 vcf = validconf[cfg_used];
1960 ep = iface->endpoint;
1961 memcpy(cmptbl, vcf, 16 * sizeof(int));
1962
1963 /* check for all endpoints in this alternate setting */
1964 for (i = 0; i < iface->desc.bNumEndpoints; i++) {
1965 ep_addr = ep->desc.bEndpointAddress;
1966
1967 /* get endpoint base */
1968 idx = ((ep_addr & 0x7f) - 1) * 2;
1969 if (ep_addr & 0x80)
1970 idx++;
1971 attr = ep->desc.bmAttributes;
1972
1973 if (cmptbl[idx] != EP_NOP) {
1974 if (cmptbl[idx] == EP_NUL)
1975 cfg_found = 0;
1976 if (attr == USB_ENDPOINT_XFER_INT
Joe Perches475be4d2012-02-19 19:52:38 -08001977 && cmptbl[idx] == EP_INT)
Karsten Keil69f52ad2009-01-09 16:20:51 +01001978 cmptbl[idx] = EP_NUL;
1979 if (attr == USB_ENDPOINT_XFER_BULK
Joe Perches475be4d2012-02-19 19:52:38 -08001980 && cmptbl[idx] == EP_BLK)
Karsten Keil69f52ad2009-01-09 16:20:51 +01001981 cmptbl[idx] = EP_NUL;
1982 if (attr == USB_ENDPOINT_XFER_ISOC
Joe Perches475be4d2012-02-19 19:52:38 -08001983 && cmptbl[idx] == EP_ISO)
Karsten Keil69f52ad2009-01-09 16:20:51 +01001984 cmptbl[idx] = EP_NUL;
1985
1986 if (attr == USB_ENDPOINT_XFER_INT &&
Joe Perches475be4d2012-02-19 19:52:38 -08001987 ep->desc.bInterval < vcf[17]) {
Karsten Keil69f52ad2009-01-09 16:20:51 +01001988 cfg_found = 0;
1989 }
1990 }
1991 ep++;
1992 }
1993
1994 for (i = 0; i < 16; i++)
1995 if (cmptbl[i] != EP_NOP && cmptbl[i] != EP_NUL)
1996 cfg_found = 0;
1997
1998 if (cfg_found) {
1999 if (small_match < cfg_used) {
2000 small_match = cfg_used;
2001 alt_used = probe_alt_setting;
2002 iface_used = iface;
2003 }
2004 }
2005 cfg_used++;
2006 }
2007 alt_idx++;
2008 } /* (alt_idx < intf->num_altsetting) */
2009
2010 /* not found a valid USB Ta Endpoint config */
2011 if (small_match == -1)
2012 return -EIO;
2013
2014 iface = iface_used;
2015 hw = kzalloc(sizeof(struct hfcsusb), GFP_KERNEL);
2016 if (!hw)
2017 return -ENOMEM; /* got no mem */
2018 snprintf(hw->name, MISDN_MAX_IDLEN - 1, "%s", DRIVER_NAME);
2019
2020 ep = iface->endpoint;
2021 vcf = validconf[small_match];
2022
2023 for (i = 0; i < iface->desc.bNumEndpoints; i++) {
2024 struct usb_fifo *f;
2025
2026 ep_addr = ep->desc.bEndpointAddress;
2027 /* get endpoint base */
2028 idx = ((ep_addr & 0x7f) - 1) * 2;
2029 if (ep_addr & 0x80)
2030 idx++;
2031 f = &hw->fifos[idx & 7];
2032
2033 /* init Endpoints */
2034 if (vcf[idx] == EP_NOP || vcf[idx] == EP_NUL) {
2035 ep++;
2036 continue;
2037 }
2038 switch (ep->desc.bmAttributes) {
2039 case USB_ENDPOINT_XFER_INT:
2040 f->pipe = usb_rcvintpipe(dev,
Joe Perches475be4d2012-02-19 19:52:38 -08002041 ep->desc.bEndpointAddress);
Karsten Keil69f52ad2009-01-09 16:20:51 +01002042 f->usb_transfer_mode = USB_INT;
2043 packet_size = le16_to_cpu(ep->desc.wMaxPacketSize);
2044 break;
2045 case USB_ENDPOINT_XFER_BULK:
2046 if (ep_addr & 0x80)
2047 f->pipe = usb_rcvbulkpipe(dev,
Joe Perches475be4d2012-02-19 19:52:38 -08002048 ep->desc.bEndpointAddress);
Karsten Keil69f52ad2009-01-09 16:20:51 +01002049 else
2050 f->pipe = usb_sndbulkpipe(dev,
Joe Perches475be4d2012-02-19 19:52:38 -08002051 ep->desc.bEndpointAddress);
Karsten Keil69f52ad2009-01-09 16:20:51 +01002052 f->usb_transfer_mode = USB_BULK;
2053 packet_size = le16_to_cpu(ep->desc.wMaxPacketSize);
2054 break;
2055 case USB_ENDPOINT_XFER_ISOC:
2056 if (ep_addr & 0x80)
2057 f->pipe = usb_rcvisocpipe(dev,
Joe Perches475be4d2012-02-19 19:52:38 -08002058 ep->desc.bEndpointAddress);
Karsten Keil69f52ad2009-01-09 16:20:51 +01002059 else
2060 f->pipe = usb_sndisocpipe(dev,
Joe Perches475be4d2012-02-19 19:52:38 -08002061 ep->desc.bEndpointAddress);
Karsten Keil69f52ad2009-01-09 16:20:51 +01002062 f->usb_transfer_mode = USB_ISOC;
2063 iso_packet_size = le16_to_cpu(ep->desc.wMaxPacketSize);
2064 break;
2065 default:
2066 f->pipe = 0;
2067 }
2068
2069 if (f->pipe) {
2070 f->fifonum = idx & 7;
2071 f->hw = hw;
2072 f->usb_packet_maxlen =
Joe Perches475be4d2012-02-19 19:52:38 -08002073 le16_to_cpu(ep->desc.wMaxPacketSize);
Karsten Keil69f52ad2009-01-09 16:20:51 +01002074 f->intervall = ep->desc.bInterval;
2075 }
2076 ep++;
2077 }
2078 hw->dev = dev; /* save device */
2079 hw->if_used = ifnum; /* save used interface */
2080 hw->alt_used = alt_used; /* and alternate config */
2081 hw->ctrl_paksize = dev->descriptor.bMaxPacketSize0; /* control size */
2082 hw->cfg_used = vcf[16]; /* store used config */
2083 hw->vend_idx = vend_idx; /* store found vendor */
2084 hw->packet_size = packet_size;
2085 hw->iso_packet_size = iso_packet_size;
2086
2087 /* create the control pipes needed for register access */
2088 hw->ctrl_in_pipe = usb_rcvctrlpipe(hw->dev, 0);
2089 hw->ctrl_out_pipe = usb_sndctrlpipe(hw->dev, 0);
2090 hw->ctrl_urb = usb_alloc_urb(0, GFP_KERNEL);
2091
2092 driver_info =
2093 (struct hfcsusb_vdata *)hfcsusb_idtab[vend_idx].driver_info;
2094 printk(KERN_DEBUG "%s: %s: detected \"%s\" (%s, if=%d alt=%d)\n",
Joe Perches475be4d2012-02-19 19:52:38 -08002095 hw->name, __func__, driver_info->vend_name,
2096 conf_str[small_match], ifnum, alt_used);
Karsten Keil69f52ad2009-01-09 16:20:51 +01002097
2098 if (setup_instance(hw, dev->dev.parent))
2099 return -EIO;
2100
2101 hw->intf = intf;
2102 usb_set_intfdata(hw->intf, hw);
2103 return 0;
2104}
2105
2106/* function called when an active device is removed */
2107static void
2108hfcsusb_disconnect(struct usb_interface *intf)
2109{
2110 struct hfcsusb *hw = usb_get_intfdata(intf);
2111 struct hfcsusb *next;
2112 int cnt = 0;
2113
2114 printk(KERN_INFO "%s: device disconnected\n", hw->name);
2115
2116 handle_led(hw, LED_POWER_OFF);
2117 release_hw(hw);
2118
2119 list_for_each_entry_safe(hw, next, &HFClist, list)
2120 cnt++;
2121 if (!cnt)
2122 hfcsusb_cnt = 0;
2123
2124 usb_set_intfdata(intf, NULL);
2125}
2126
2127static struct usb_driver hfcsusb_drv = {
2128 .name = DRIVER_NAME,
2129 .id_table = hfcsusb_idtab,
2130 .probe = hfcsusb_probe,
2131 .disconnect = hfcsusb_disconnect,
2132};
2133
Greg Kroah-Hartmanfe748482011-11-18 09:52:10 -08002134module_usb_driver(hfcsusb_drv);