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Fix occurrences of "the the "
[deliverable/linux.git] / drivers / isdn / hisax / hfc_usb.c
1 /*
2 * hfc_usb.c
3 *
4 * $Id: hfc_usb.c,v 2.3.2.13 2006/02/17 17:17:22 mbachem Exp $
5 *
6 * modular HiSax ISDN driver for Colognechip HFC-S USB chip
7 *
8 * Authors : Peter Sprenger (sprenger@moving-bytes.de)
9 * Martin Bachem (info@colognechip.com)
10 *
11 * based on the first hfc_usb driver of
12 * Werner Cornelius (werner@isdn-development.de)
13 *
14 * This program is free software; you can redistribute it and/or modify
15 * it under the terms of the GNU General Public License as published by
16 * the Free Software Foundation; either version 2, or (at your option)
17 * any later version.
18 *
19 * This program is distributed in the hope that it will be useful,
20 * but WITHOUT ANY WARRANTY; without even the implied warranty of
21 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
22 * GNU General Public License for more details.
23 *
24 * You should have received a copy of the GNU General Public License
25 * along with this program; if not, write to the Free Software
26 * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
27 *
28 * See Version Histroy at the bottom of this file
29 *
30 */
31
32 #include <linux/types.h>
33 #include <linux/stddef.h>
34 #include <linux/timer.h>
35 #include <linux/init.h>
36 #include <linux/module.h>
37 #include <linux/kernel_stat.h>
38 #include <linux/usb.h>
39 #include <linux/kernel.h>
40 #include "hisax.h"
41 #include "hisax_if.h"
42 #include "hfc_usb.h"
43
44 static const char *hfcusb_revision =
45 "$Revision: 2.3.2.13 $ $Date: 2006/02/17 17:17:22 $ ";
46
47 /* Hisax debug support
48 * use "modprobe debug=x" where x is bitfield of USB_DBG & ISDN_DBG
49 */
50 #ifdef CONFIG_HISAX_DEBUG
51 #include <linux/moduleparam.h>
52 #define __debug_variable hfc_debug
53 #include "hisax_debug.h"
54 static u_int debug;
55 module_param(debug, uint, 0);
56 static int hfc_debug;
57 #endif
58
59 /* private vendor specific data */
60 typedef struct {
61 __u8 led_scheme; // led display scheme
62 signed short led_bits[8]; // array of 8 possible LED bitmask settings
63 char *vend_name; // device name
64 } hfcsusb_vdata;
65
66 /****************************************/
67 /* data defining the devices to be used */
68 /****************************************/
69 static struct usb_device_id hfcusb_idtab[] = {
70 {
71 USB_DEVICE(0x0959, 0x2bd0),
72 .driver_info = (unsigned long) &((hfcsusb_vdata)
73 {LED_OFF, {4, 0, 2, 1},
74 "ISDN USB TA (Cologne Chip HFC-S USB based)"}),
75 },
76 {
77 USB_DEVICE(0x0675, 0x1688),
78 .driver_info = (unsigned long) &((hfcsusb_vdata)
79 {LED_SCHEME1, {1, 2, 0, 0},
80 "DrayTek miniVigor 128 USB ISDN TA"}),
81 },
82 {
83 USB_DEVICE(0x07b0, 0x0007),
84 .driver_info = (unsigned long) &((hfcsusb_vdata)
85 {LED_SCHEME1, {0x80, -64, -32, -16},
86 "Billion tiny USB ISDN TA 128"}),
87 },
88 {
89 USB_DEVICE(0x0742, 0x2008),
90 .driver_info = (unsigned long) &((hfcsusb_vdata)
91 {LED_SCHEME1, {4, 0, 2, 1},
92 "Stollmann USB TA"}),
93 },
94 {
95 USB_DEVICE(0x0742, 0x2009),
96 .driver_info = (unsigned long) &((hfcsusb_vdata)
97 {LED_SCHEME1, {4, 0, 2, 1},
98 "Aceex USB ISDN TA"}),
99 },
100 {
101 USB_DEVICE(0x0742, 0x200A),
102 .driver_info = (unsigned long) &((hfcsusb_vdata)
103 {LED_SCHEME1, {4, 0, 2, 1},
104 "OEM USB ISDN TA"}),
105 },
106 {
107 USB_DEVICE(0x08e3, 0x0301),
108 .driver_info = (unsigned long) &((hfcsusb_vdata)
109 {LED_SCHEME1, {2, 0, 1, 4},
110 "Olitec USB RNIS"}),
111 },
112 {
113 USB_DEVICE(0x07fa, 0x0846),
114 .driver_info = (unsigned long) &((hfcsusb_vdata)
115 {LED_SCHEME1, {0x80, -64, -32, -16},
116 "Bewan Modem RNIS USB"}),
117 },
118 {
119 USB_DEVICE(0x07fa, 0x0847),
120 .driver_info = (unsigned long) &((hfcsusb_vdata)
121 {LED_SCHEME1, {0x80, -64, -32, -16},
122 "Djinn Numeris USB"}),
123 },
124 {
125 USB_DEVICE(0x07b0, 0x0006),
126 .driver_info = (unsigned long) &((hfcsusb_vdata)
127 {LED_SCHEME1, {0x80, -64, -32, -16},
128 "Twister ISDN TA"}),
129 },
130 { }
131 };
132
133 /***************************************************************/
134 /* structure defining input+output fifos (interrupt/bulk mode) */
135 /***************************************************************/
136 struct usb_fifo; /* forward definition */
137 typedef struct iso_urb_struct {
138 struct urb *purb;
139 __u8 buffer[ISO_BUFFER_SIZE]; /* buffer incoming/outgoing data */
140 struct usb_fifo *owner_fifo; /* pointer to owner fifo */
141 } iso_urb_struct;
142
143
144 struct hfcusb_data; /* forward definition */
145 typedef struct usb_fifo {
146 int fifonum; /* fifo index attached to this structure */
147 int active; /* fifo is currently active */
148 struct hfcusb_data *hfc; /* pointer to main structure */
149 int pipe; /* address of endpoint */
150 __u8 usb_packet_maxlen; /* maximum length for usb transfer */
151 unsigned int max_size; /* maximum size of receive/send packet */
152 __u8 intervall; /* interrupt interval */
153 struct sk_buff *skbuff; /* actual used buffer */
154 struct urb *urb; /* transfer structure for usb routines */
155 __u8 buffer[128]; /* buffer incoming/outgoing data */
156 int bit_line; /* how much bits are in the fifo? */
157
158 volatile __u8 usb_transfer_mode; /* switched between ISO and INT */
159 iso_urb_struct iso[2]; /* need two urbs to have one always for pending */
160 struct hisax_if *hif; /* hisax interface */
161 int delete_flg; /* only delete skbuff once */
162 int last_urblen; /* remember length of last packet */
163
164 } usb_fifo;
165
166 /*********************************************/
167 /* structure holding all data for one device */
168 /*********************************************/
169 typedef struct hfcusb_data {
170 /* HiSax Interface for loadable Layer1 drivers */
171 struct hisax_d_if d_if; /* see hisax_if.h */
172 struct hisax_b_if b_if[2]; /* see hisax_if.h */
173 int protocol;
174
175 struct usb_device *dev; /* our device */
176 int if_used; /* used interface number */
177 int alt_used; /* used alternate config */
178 int ctrl_paksize; /* control pipe packet size */
179 int ctrl_in_pipe, ctrl_out_pipe; /* handles for control pipe */
180 int cfg_used; /* configuration index used */
181 int vend_idx; /* vendor found */
182 int b_mode[2]; /* B-channel mode */
183 int l1_activated; /* layer 1 activated */
184 int disc_flag; /* 'true' if device was disonnected to avoid some USB actions */
185 int packet_size, iso_packet_size;
186
187 /* control pipe background handling */
188 ctrl_buft ctrl_buff[HFC_CTRL_BUFSIZE]; /* buffer holding queued data */
189 volatile int ctrl_in_idx, ctrl_out_idx, ctrl_cnt; /* input/output pointer + count */
190 struct urb *ctrl_urb; /* transfer structure for control channel */
191
192 struct usb_ctrlrequest ctrl_write; /* buffer for control write request */
193 struct usb_ctrlrequest ctrl_read; /* same for read request */
194
195 __u8 old_led_state, led_state, led_new_data, led_b_active;
196
197 volatile __u8 threshold_mask; /* threshold actually reported */
198 volatile __u8 bch_enables; /* or mask for sctrl_r and sctrl register values */
199
200 usb_fifo fifos[HFCUSB_NUM_FIFOS]; /* structure holding all fifo data */
201
202 volatile __u8 l1_state; /* actual l1 state */
203 struct timer_list t3_timer; /* timer 3 for activation/deactivation */
204 struct timer_list t4_timer; /* timer 4 for activation/deactivation */
205 } hfcusb_data;
206
207
208 static void collect_rx_frame(usb_fifo * fifo, __u8 * data, int len,
209 int finish);
210
211
212 static inline const char *
213 symbolic(struct hfcusb_symbolic_list list[], const int num)
214 {
215 int i;
216 for (i = 0; list[i].name != NULL; i++)
217 if (list[i].num == num)
218 return (list[i].name);
219 return "<unknown ERROR>";
220 }
221
222
223 /******************************************************/
224 /* start next background transfer for control channel */
225 /******************************************************/
226 static void
227 ctrl_start_transfer(hfcusb_data * hfc)
228 {
229 if (hfc->ctrl_cnt) {
230 hfc->ctrl_urb->pipe = hfc->ctrl_out_pipe;
231 hfc->ctrl_urb->setup_packet = (u_char *) & hfc->ctrl_write;
232 hfc->ctrl_urb->transfer_buffer = NULL;
233 hfc->ctrl_urb->transfer_buffer_length = 0;
234 hfc->ctrl_write.wIndex =
235 cpu_to_le16(hfc->ctrl_buff[hfc->ctrl_out_idx].hfc_reg);
236 hfc->ctrl_write.wValue =
237 cpu_to_le16(hfc->ctrl_buff[hfc->ctrl_out_idx].reg_val);
238
239 usb_submit_urb(hfc->ctrl_urb, GFP_ATOMIC); /* start transfer */
240 }
241 } /* ctrl_start_transfer */
242
243 /************************************/
244 /* queue a control transfer request */
245 /* return 0 on success. */
246 /************************************/
247 static int
248 queue_control_request(hfcusb_data * hfc, __u8 reg, __u8 val, int action)
249 {
250 ctrl_buft *buf;
251
252 if (hfc->ctrl_cnt >= HFC_CTRL_BUFSIZE)
253 return (1); /* no space left */
254 buf = &hfc->ctrl_buff[hfc->ctrl_in_idx]; /* pointer to new index */
255 buf->hfc_reg = reg;
256 buf->reg_val = val;
257 buf->action = action;
258 if (++hfc->ctrl_in_idx >= HFC_CTRL_BUFSIZE)
259 hfc->ctrl_in_idx = 0; /* pointer wrap */
260 if (++hfc->ctrl_cnt == 1)
261 ctrl_start_transfer(hfc);
262 return (0);
263 } /* queue_control_request */
264
265 static int
266 control_action_handler(hfcusb_data * hfc, int reg, int val, int action)
267 {
268 if (!action)
269 return (1); /* no action defined */
270 return (0);
271 }
272
273 /***************************************************************/
274 /* control completion routine handling background control cmds */
275 /***************************************************************/
276 static void
277 ctrl_complete(struct urb *urb)
278 {
279 hfcusb_data *hfc = (hfcusb_data *) urb->context;
280 ctrl_buft *buf;
281
282 urb->dev = hfc->dev;
283 if (hfc->ctrl_cnt) {
284 buf = &hfc->ctrl_buff[hfc->ctrl_out_idx];
285 control_action_handler(hfc, buf->hfc_reg, buf->reg_val,
286 buf->action);
287
288 hfc->ctrl_cnt--; /* decrement actual count */
289 if (++hfc->ctrl_out_idx >= HFC_CTRL_BUFSIZE)
290 hfc->ctrl_out_idx = 0; /* pointer wrap */
291
292 ctrl_start_transfer(hfc); /* start next transfer */
293 }
294 } /* ctrl_complete */
295
296 /***************************************************/
297 /* write led data to auxport & invert if necessary */
298 /***************************************************/
299 static void
300 write_led(hfcusb_data * hfc, __u8 led_state)
301 {
302 if (led_state != hfc->old_led_state) {
303 hfc->old_led_state = led_state;
304 queue_control_request(hfc, HFCUSB_P_DATA, led_state, 1);
305 }
306 }
307
308 /**************************/
309 /* handle LED bits */
310 /**************************/
311 static void
312 set_led_bit(hfcusb_data * hfc, signed short led_bits, int unset)
313 {
314 if (unset) {
315 if (led_bits < 0)
316 hfc->led_state |= abs(led_bits);
317 else
318 hfc->led_state &= ~led_bits;
319 } else {
320 if (led_bits < 0)
321 hfc->led_state &= ~abs(led_bits);
322 else
323 hfc->led_state |= led_bits;
324 }
325 }
326
327 /**************************/
328 /* handle LED requests */
329 /**************************/
330 static void
331 handle_led(hfcusb_data * hfc, int event)
332 {
333 hfcsusb_vdata *driver_info =
334 (hfcsusb_vdata *) hfcusb_idtab[hfc->vend_idx].driver_info;
335
336 /* if no scheme -> no LED action */
337 if (driver_info->led_scheme == LED_OFF)
338 return;
339
340 switch (event) {
341 case LED_POWER_ON:
342 set_led_bit(hfc, driver_info->led_bits[0],
343 0);
344 set_led_bit(hfc, driver_info->led_bits[1],
345 1);
346 set_led_bit(hfc, driver_info->led_bits[2],
347 1);
348 set_led_bit(hfc, driver_info->led_bits[3],
349 1);
350 break;
351 case LED_POWER_OFF: /* no Power off handling */
352 break;
353 case LED_S0_ON:
354 set_led_bit(hfc, driver_info->led_bits[1],
355 0);
356 break;
357 case LED_S0_OFF:
358 set_led_bit(hfc, driver_info->led_bits[1],
359 1);
360 break;
361 case LED_B1_ON:
362 set_led_bit(hfc, driver_info->led_bits[2],
363 0);
364 break;
365 case LED_B1_OFF:
366 set_led_bit(hfc, driver_info->led_bits[2],
367 1);
368 break;
369 case LED_B2_ON:
370 set_led_bit(hfc, driver_info->led_bits[3],
371 0);
372 break;
373 case LED_B2_OFF:
374 set_led_bit(hfc, driver_info->led_bits[3],
375 1);
376 break;
377 }
378 write_led(hfc, hfc->led_state);
379 }
380
381 /********************************/
382 /* called when timer t3 expires */
383 /********************************/
384 static void
385 l1_timer_expire_t3(hfcusb_data * hfc)
386 {
387 hfc->d_if.ifc.l1l2(&hfc->d_if.ifc, PH_DEACTIVATE | INDICATION,
388 NULL);
389 #ifdef CONFIG_HISAX_DEBUG
390 DBG(ISDN_DBG,
391 "HFC-S USB: PH_DEACTIVATE | INDICATION sent (T3 expire)");
392 #endif
393 hfc->l1_activated = false;
394 handle_led(hfc, LED_S0_OFF);
395 /* deactivate : */
396 queue_control_request(hfc, HFCUSB_STATES, 0x10, 1);
397 queue_control_request(hfc, HFCUSB_STATES, 3, 1);
398 }
399
400 /********************************/
401 /* called when timer t4 expires */
402 /********************************/
403 static void
404 l1_timer_expire_t4(hfcusb_data * hfc)
405 {
406 hfc->d_if.ifc.l1l2(&hfc->d_if.ifc, PH_DEACTIVATE | INDICATION,
407 NULL);
408 #ifdef CONFIG_HISAX_DEBUG
409 DBG(ISDN_DBG,
410 "HFC-S USB: PH_DEACTIVATE | INDICATION sent (T4 expire)");
411 #endif
412 hfc->l1_activated = false;
413 handle_led(hfc, LED_S0_OFF);
414 }
415
416 /*****************************/
417 /* handle S0 state changes */
418 /*****************************/
419 static void
420 state_handler(hfcusb_data * hfc, __u8 state)
421 {
422 __u8 old_state;
423
424 old_state = hfc->l1_state;
425 if (state == old_state || state < 1 || state > 8)
426 return;
427
428 #ifdef CONFIG_HISAX_DEBUG
429 DBG(ISDN_DBG, "HFC-S USB: new S0 state:%d old_state:%d", state,
430 old_state);
431 #endif
432 if (state < 4 || state == 7 || state == 8) {
433 if (timer_pending(&hfc->t3_timer))
434 del_timer(&hfc->t3_timer);
435 #ifdef CONFIG_HISAX_DEBUG
436 DBG(ISDN_DBG, "HFC-S USB: T3 deactivated");
437 #endif
438 }
439 if (state >= 7) {
440 if (timer_pending(&hfc->t4_timer))
441 del_timer(&hfc->t4_timer);
442 #ifdef CONFIG_HISAX_DEBUG
443 DBG(ISDN_DBG, "HFC-S USB: T4 deactivated");
444 #endif
445 }
446
447 if (state == 7 && !hfc->l1_activated) {
448 hfc->d_if.ifc.l1l2(&hfc->d_if.ifc,
449 PH_ACTIVATE | INDICATION, NULL);
450 #ifdef CONFIG_HISAX_DEBUG
451 DBG(ISDN_DBG, "HFC-S USB: PH_ACTIVATE | INDICATION sent");
452 #endif
453 hfc->l1_activated = true;
454 handle_led(hfc, LED_S0_ON);
455 } else if (state <= 3 /* && activated */ ) {
456 if (old_state == 7 || old_state == 8) {
457 #ifdef CONFIG_HISAX_DEBUG
458 DBG(ISDN_DBG, "HFC-S USB: T4 activated");
459 #endif
460 if (!timer_pending(&hfc->t4_timer)) {
461 hfc->t4_timer.expires =
462 jiffies + (HFC_TIMER_T4 * HZ) / 1000;
463 add_timer(&hfc->t4_timer);
464 }
465 } else {
466 hfc->d_if.ifc.l1l2(&hfc->d_if.ifc,
467 PH_DEACTIVATE | INDICATION,
468 NULL);
469 #ifdef CONFIG_HISAX_DEBUG
470 DBG(ISDN_DBG,
471 "HFC-S USB: PH_DEACTIVATE | INDICATION sent");
472 #endif
473 hfc->l1_activated = false;
474 handle_led(hfc, LED_S0_OFF);
475 }
476 }
477 hfc->l1_state = state;
478 }
479
480 /* prepare iso urb */
481 static void
482 fill_isoc_urb(struct urb *urb, struct usb_device *dev, unsigned int pipe,
483 void *buf, int num_packets, int packet_size, int interval,
484 usb_complete_t complete, void *context)
485 {
486 int k;
487
488 spin_lock_init(&urb->lock);
489 urb->dev = dev;
490 urb->pipe = pipe;
491 urb->complete = complete;
492 urb->number_of_packets = num_packets;
493 urb->transfer_buffer_length = packet_size * num_packets;
494 urb->context = context;
495 urb->transfer_buffer = buf;
496 urb->transfer_flags = URB_ISO_ASAP;
497 urb->actual_length = 0;
498 urb->interval = interval;
499 for (k = 0; k < num_packets; k++) {
500 urb->iso_frame_desc[k].offset = packet_size * k;
501 urb->iso_frame_desc[k].length = packet_size;
502 urb->iso_frame_desc[k].actual_length = 0;
503 }
504 }
505
506 /* allocs urbs and start isoc transfer with two pending urbs to avoid
507 gaps in the transfer chain */
508 static int
509 start_isoc_chain(usb_fifo * fifo, int num_packets_per_urb,
510 usb_complete_t complete, int packet_size)
511 {
512 int i, k, errcode;
513
514 printk(KERN_INFO "HFC-S USB: starting ISO-chain for Fifo %i\n",
515 fifo->fifonum);
516
517 /* allocate Memory for Iso out Urbs */
518 for (i = 0; i < 2; i++) {
519 if (!(fifo->iso[i].purb)) {
520 fifo->iso[i].purb =
521 usb_alloc_urb(num_packets_per_urb, GFP_KERNEL);
522 if (!(fifo->iso[i].purb)) {
523 printk(KERN_INFO
524 "alloc urb for fifo %i failed!!!",
525 fifo->fifonum);
526 }
527 fifo->iso[i].owner_fifo = (struct usb_fifo *) fifo;
528
529 /* Init the first iso */
530 if (ISO_BUFFER_SIZE >=
531 (fifo->usb_packet_maxlen *
532 num_packets_per_urb)) {
533 fill_isoc_urb(fifo->iso[i].purb,
534 fifo->hfc->dev, fifo->pipe,
535 fifo->iso[i].buffer,
536 num_packets_per_urb,
537 fifo->usb_packet_maxlen,
538 fifo->intervall, complete,
539 &fifo->iso[i]);
540 memset(fifo->iso[i].buffer, 0,
541 sizeof(fifo->iso[i].buffer));
542 /* defining packet delimeters in fifo->buffer */
543 for (k = 0; k < num_packets_per_urb; k++) {
544 fifo->iso[i].purb->
545 iso_frame_desc[k].offset =
546 k * packet_size;
547 fifo->iso[i].purb->
548 iso_frame_desc[k].length =
549 packet_size;
550 }
551 } else {
552 printk(KERN_INFO
553 "HFC-S USB: ISO Buffer size to small!\n");
554 }
555 }
556 fifo->bit_line = BITLINE_INF;
557
558 errcode = usb_submit_urb(fifo->iso[i].purb, GFP_KERNEL);
559 fifo->active = (errcode >= 0) ? 1 : 0;
560 if (errcode < 0) {
561 printk(KERN_INFO "HFC-S USB: %s URB nr:%d\n",
562 symbolic(urb_errlist, errcode), i);
563 };
564 }
565 return (fifo->active);
566 }
567
568 /* stops running iso chain and frees their pending urbs */
569 static void
570 stop_isoc_chain(usb_fifo * fifo)
571 {
572 int i;
573
574 for (i = 0; i < 2; i++) {
575 if (fifo->iso[i].purb) {
576 #ifdef CONFIG_HISAX_DEBUG
577 DBG(USB_DBG,
578 "HFC-S USB: Stopping iso chain for fifo %i.%i",
579 fifo->fifonum, i);
580 #endif
581 usb_unlink_urb(fifo->iso[i].purb);
582 usb_free_urb(fifo->iso[i].purb);
583 fifo->iso[i].purb = NULL;
584 }
585 }
586 if (fifo->urb) {
587 usb_unlink_urb(fifo->urb);
588 usb_free_urb(fifo->urb);
589 fifo->urb = NULL;
590 }
591 fifo->active = 0;
592 }
593
594 /* defines how much ISO packets are handled in one URB */
595 static int iso_packets[8] =
596 { ISOC_PACKETS_B, ISOC_PACKETS_B, ISOC_PACKETS_B, ISOC_PACKETS_B,
597 ISOC_PACKETS_D, ISOC_PACKETS_D, ISOC_PACKETS_D, ISOC_PACKETS_D
598 };
599
600 /*****************************************************/
601 /* transmit completion routine for all ISO tx fifos */
602 /*****************************************************/
603 static void
604 tx_iso_complete(struct urb *urb)
605 {
606 iso_urb_struct *context_iso_urb = (iso_urb_struct *) urb->context;
607 usb_fifo *fifo = context_iso_urb->owner_fifo;
608 hfcusb_data *hfc = fifo->hfc;
609 int k, tx_offset, num_isoc_packets, sink, len, current_len,
610 errcode;
611 int frame_complete, transp_mode, fifon, status;
612 __u8 threshbit;
613 __u8 threshtable[8] = { 1, 2, 4, 8, 0x10, 0x20, 0x40, 0x80 };
614
615 fifon = fifo->fifonum;
616 status = urb->status;
617
618 tx_offset = 0;
619
620 if (fifo->active && !status) {
621 transp_mode = 0;
622 if (fifon < 4 && hfc->b_mode[fifon / 2] == L1_MODE_TRANS)
623 transp_mode = true;
624
625 /* is FifoFull-threshold set for our channel? */
626 threshbit = threshtable[fifon] & hfc->threshold_mask;
627 num_isoc_packets = iso_packets[fifon];
628
629 /* predict dataflow to avoid fifo overflow */
630 if (fifon >= HFCUSB_D_TX) {
631 sink = (threshbit) ? SINK_DMIN : SINK_DMAX;
632 } else {
633 sink = (threshbit) ? SINK_MIN : SINK_MAX;
634 }
635 fill_isoc_urb(urb, fifo->hfc->dev, fifo->pipe,
636 context_iso_urb->buffer, num_isoc_packets,
637 fifo->usb_packet_maxlen, fifo->intervall,
638 tx_iso_complete, urb->context);
639 memset(context_iso_urb->buffer, 0,
640 sizeof(context_iso_urb->buffer));
641 frame_complete = false;
642 /* Generate next Iso Packets */
643 for (k = 0; k < num_isoc_packets; ++k) {
644 if (fifo->skbuff) {
645 len = fifo->skbuff->len;
646 /* we lower data margin every msec */
647 fifo->bit_line -= sink;
648 current_len = (0 - fifo->bit_line) / 8;
649 /* maximum 15 byte for every ISO packet makes our life easier */
650 if (current_len > 14)
651 current_len = 14;
652 current_len =
653 (len <=
654 current_len) ? len : current_len;
655 /* how much bit do we put on the line? */
656 fifo->bit_line += current_len * 8;
657
658 context_iso_urb->buffer[tx_offset] = 0;
659 if (current_len == len) {
660 if (!transp_mode) {
661 /* here frame completion */
662 context_iso_urb->
663 buffer[tx_offset] = 1;
664 /* add 2 byte flags and 16bit CRC at end of ISDN frame */
665 fifo->bit_line += 32;
666 }
667 frame_complete = true;
668 }
669
670 memcpy(context_iso_urb->buffer +
671 tx_offset + 1, fifo->skbuff->data,
672 current_len);
673 skb_pull(fifo->skbuff, current_len);
674
675 /* define packet delimeters within the URB buffer */
676 urb->iso_frame_desc[k].offset = tx_offset;
677 urb->iso_frame_desc[k].length =
678 current_len + 1;
679
680 tx_offset += (current_len + 1);
681 } else {
682 urb->iso_frame_desc[k].offset =
683 tx_offset++;
684
685 urb->iso_frame_desc[k].length = 1;
686 fifo->bit_line -= sink; /* we lower data margin every msec */
687
688 if (fifo->bit_line < BITLINE_INF) {
689 fifo->bit_line = BITLINE_INF;
690 }
691 }
692
693 if (frame_complete) {
694 fifo->delete_flg = true;
695 fifo->hif->l1l2(fifo->hif,
696 PH_DATA | CONFIRM,
697 (void *) (unsigned long) fifo->skbuff->
698 truesize);
699 if (fifo->skbuff && fifo->delete_flg) {
700 dev_kfree_skb_any(fifo->skbuff);
701 fifo->skbuff = NULL;
702 fifo->delete_flg = false;
703 }
704 frame_complete = false;
705 }
706 }
707 errcode = usb_submit_urb(urb, GFP_ATOMIC);
708 if (errcode < 0) {
709 printk(KERN_INFO
710 "HFC-S USB: error submitting ISO URB: %d \n",
711 errcode);
712 }
713 } else {
714 if (status && !hfc->disc_flag) {
715 printk(KERN_INFO
716 "HFC-S USB: tx_iso_complete : urb->status %s (%i), fifonum=%d\n",
717 symbolic(urb_errlist, status), status,
718 fifon);
719 }
720 }
721 } /* tx_iso_complete */
722
723 /*****************************************************/
724 /* receive completion routine for all ISO tx fifos */
725 /*****************************************************/
726 static void
727 rx_iso_complete(struct urb *urb)
728 {
729 iso_urb_struct *context_iso_urb = (iso_urb_struct *) urb->context;
730 usb_fifo *fifo = context_iso_urb->owner_fifo;
731 hfcusb_data *hfc = fifo->hfc;
732 int k, len, errcode, offset, num_isoc_packets, fifon, maxlen,
733 status;
734 unsigned int iso_status;
735 __u8 *buf;
736 static __u8 eof[8];
737 #ifdef CONFIG_HISAX_DEBUG
738 __u8 i;
739 #endif
740
741 fifon = fifo->fifonum;
742 status = urb->status;
743
744 if (urb->status == -EOVERFLOW) {
745 #ifdef CONFIG_HISAX_DEBUG
746 DBG(USB_DBG,
747 "HFC-USB: ignoring USB DATAOVERRUN for fifo %i \n",
748 fifon);
749 #endif
750 status = 0;
751 }
752 if (fifo->active && !status) {
753 num_isoc_packets = iso_packets[fifon];
754 maxlen = fifo->usb_packet_maxlen;
755 for (k = 0; k < num_isoc_packets; ++k) {
756 len = urb->iso_frame_desc[k].actual_length;
757 offset = urb->iso_frame_desc[k].offset;
758 buf = context_iso_urb->buffer + offset;
759 iso_status = urb->iso_frame_desc[k].status;
760 #ifdef CONFIG_HISAX_DEBUG
761 if (iso_status && !hfc->disc_flag)
762 DBG(USB_DBG,
763 "HFC-S USB: ISO packet failure - status:%x",
764 iso_status);
765
766 if ((fifon == 5) && (debug > 1)) {
767 printk(KERN_INFO
768 "HFC-S USB: ISO-D-RX lst_urblen:%2d "
769 "act_urblen:%2d max-urblen:%2d "
770 "EOF:0x%0x DATA: ",
771 fifo->last_urblen, len, maxlen,
772 eof[5]);
773 for (i = 0; i < len; i++)
774 printk("%.2x ", buf[i]);
775 printk("\n");
776 }
777 #endif
778 if (fifo->last_urblen != maxlen) {
779 /* the threshold mask is in the 2nd status byte */
780 hfc->threshold_mask = buf[1];
781 /* care for L1 state only for D-Channel
782 to avoid overlapped iso completions */
783 if (fifon == 5) {
784 /* the S0 state is in the upper half
785 of the 1st status byte */
786 state_handler(hfc, buf[0] >> 4);
787 }
788 eof[fifon] = buf[0] & 1;
789 if (len > 2)
790 collect_rx_frame(fifo, buf + 2,
791 len - 2,
792 (len <
793 maxlen) ?
794 eof[fifon] : 0);
795 } else {
796 collect_rx_frame(fifo, buf, len,
797 (len <
798 maxlen) ? eof[fifon] :
799 0);
800 }
801 fifo->last_urblen = len;
802 }
803
804 fill_isoc_urb(urb, fifo->hfc->dev, fifo->pipe,
805 context_iso_urb->buffer, num_isoc_packets,
806 fifo->usb_packet_maxlen, fifo->intervall,
807 rx_iso_complete, urb->context);
808 errcode = usb_submit_urb(urb, GFP_ATOMIC);
809 if (errcode < 0) {
810 printk(KERN_INFO
811 "HFC-S USB: error submitting ISO URB: %d \n",
812 errcode);
813 }
814 } else {
815 if (status && !hfc->disc_flag) {
816 printk(KERN_INFO
817 "HFC-S USB: rx_iso_complete : "
818 "urb->status %d, fifonum %d\n",
819 status, fifon);
820 }
821 }
822 } /* rx_iso_complete */
823
824 /*****************************************************/
825 /* collect data from interrupt or isochron in */
826 /*****************************************************/
827 static void
828 collect_rx_frame(usb_fifo * fifo, __u8 * data, int len, int finish)
829 {
830 hfcusb_data *hfc = fifo->hfc;
831 int transp_mode, fifon;
832 #ifdef CONFIG_HISAX_DEBUG
833 int i;
834 #endif
835 fifon = fifo->fifonum;
836 transp_mode = 0;
837 if (fifon < 4 && hfc->b_mode[fifon / 2] == L1_MODE_TRANS)
838 transp_mode = true;
839
840 if (!fifo->skbuff) {
841 fifo->skbuff = dev_alloc_skb(fifo->max_size + 3);
842 if (!fifo->skbuff) {
843 printk(KERN_INFO
844 "HFC-S USB: cannot allocate buffer (dev_alloc_skb) fifo:%d\n",
845 fifon);
846 return;
847 }
848 }
849 if (len) {
850 if (fifo->skbuff->len + len < fifo->max_size) {
851 memcpy(skb_put(fifo->skbuff, len), data, len);
852 } else {
853 #ifdef CONFIG_HISAX_DEBUG
854 printk(KERN_INFO "HFC-S USB: ");
855 for (i = 0; i < 15; i++)
856 printk("%.2x ",
857 fifo->skbuff->data[fifo->skbuff->
858 len - 15 + i]);
859 printk("\n");
860 #endif
861 printk(KERN_INFO
862 "HCF-USB: got frame exceeded fifo->max_size:%d on fifo:%d\n",
863 fifo->max_size, fifon);
864 }
865 }
866 if (transp_mode && fifo->skbuff->len >= 128) {
867 fifo->hif->l1l2(fifo->hif, PH_DATA | INDICATION,
868 fifo->skbuff);
869 fifo->skbuff = NULL;
870 return;
871 }
872 /* we have a complete hdlc packet */
873 if (finish) {
874 if ((!fifo->skbuff->data[fifo->skbuff->len - 1])
875 && (fifo->skbuff->len > 3)) {
876 /* remove CRC & status */
877 skb_trim(fifo->skbuff, fifo->skbuff->len - 3);
878 if (fifon == HFCUSB_PCM_RX) {
879 fifo->hif->l1l2(fifo->hif,
880 PH_DATA_E | INDICATION,
881 fifo->skbuff);
882 } else
883 fifo->hif->l1l2(fifo->hif,
884 PH_DATA | INDICATION,
885 fifo->skbuff);
886 fifo->skbuff = NULL; /* buffer was freed from upper layer */
887 } else {
888 if (fifo->skbuff->len > 3) {
889 printk(KERN_INFO
890 "HFC-S USB: got frame %d bytes but CRC ERROR on fifo:%d!!!\n",
891 fifo->skbuff->len, fifon);
892 #ifdef CONFIG_HISAX_DEBUG
893 if (debug > 1) {
894 printk(KERN_INFO "HFC-S USB: ");
895 for (i = 0; i < 15; i++)
896 printk("%.2x ",
897 fifo->skbuff->
898 data[fifo->skbuff->
899 len - 15 + i]);
900 printk("\n");
901 }
902 #endif
903 }
904 #ifdef CONFIG_HISAX_DEBUG
905 else {
906 printk(KERN_INFO
907 "HFC-S USB: frame to small (%d bytes)!!!\n",
908 fifo->skbuff->len);
909 }
910 #endif
911 skb_trim(fifo->skbuff, 0);
912 }
913 }
914 }
915
916 /***********************************************/
917 /* receive completion routine for all rx fifos */
918 /***********************************************/
919 static void
920 rx_complete(struct urb *urb)
921 {
922 int len;
923 int status;
924 __u8 *buf, maxlen, fifon;
925 usb_fifo *fifo = (usb_fifo *) urb->context;
926 hfcusb_data *hfc = fifo->hfc;
927 static __u8 eof[8];
928 #ifdef CONFIG_HISAX_DEBUG
929 __u8 i;
930 #endif
931
932 urb->dev = hfc->dev; /* security init */
933
934 fifon = fifo->fifonum;
935 if ((!fifo->active) || (urb->status)) {
936 #ifdef CONFIG_HISAX_DEBUG
937 DBG(USB_DBG, "HFC-S USB: RX-Fifo %i is going down (%i)",
938 fifon, urb->status);
939 #endif
940 fifo->urb->interval = 0; /* cancel automatic rescheduling */
941 if (fifo->skbuff) {
942 dev_kfree_skb_any(fifo->skbuff);
943 fifo->skbuff = NULL;
944 }
945 return;
946 }
947 len = urb->actual_length;
948 buf = fifo->buffer;
949 maxlen = fifo->usb_packet_maxlen;
950
951 #ifdef CONFIG_HISAX_DEBUG
952 if ((fifon == 5) && (debug > 1)) {
953 printk(KERN_INFO
954 "HFC-S USB: INT-D-RX lst_urblen:%2d act_urblen:%2d max-urblen:%2d EOF:0x%0x DATA: ",
955 fifo->last_urblen, len, maxlen, eof[5]);
956 for (i = 0; i < len; i++)
957 printk("%.2x ", buf[i]);
958 printk("\n");
959 }
960 #endif
961
962 if (fifo->last_urblen != fifo->usb_packet_maxlen) {
963 /* the threshold mask is in the 2nd status byte */
964 hfc->threshold_mask = buf[1];
965 /* the S0 state is in the upper half of the 1st status byte */
966 state_handler(hfc, buf[0] >> 4);
967 eof[fifon] = buf[0] & 1;
968 /* if we have more than the 2 status bytes -> collect data */
969 if (len > 2)
970 collect_rx_frame(fifo, buf + 2,
971 urb->actual_length - 2,
972 (len < maxlen) ? eof[fifon] : 0);
973 } else {
974 collect_rx_frame(fifo, buf, urb->actual_length,
975 (len < maxlen) ? eof[fifon] : 0);
976 }
977 fifo->last_urblen = urb->actual_length;
978 status = usb_submit_urb(urb, GFP_ATOMIC);
979 if (status) {
980 printk(KERN_INFO
981 "HFC-S USB: error resubmitting URN at rx_complete...\n");
982 }
983 } /* rx_complete */
984
985 /***************************************************/
986 /* start the interrupt transfer for the given fifo */
987 /***************************************************/
988 static void
989 start_int_fifo(usb_fifo * fifo)
990 {
991 int errcode;
992
993 printk(KERN_INFO "HFC-S USB: starting intr IN fifo:%d\n",
994 fifo->fifonum);
995
996 if (!fifo->urb) {
997 fifo->urb = usb_alloc_urb(0, GFP_KERNEL);
998 if (!fifo->urb)
999 return;
1000 }
1001 usb_fill_int_urb(fifo->urb, fifo->hfc->dev, fifo->pipe,
1002 fifo->buffer, fifo->usb_packet_maxlen,
1003 rx_complete, fifo, fifo->intervall);
1004 fifo->active = 1; /* must be marked active */
1005 errcode = usb_submit_urb(fifo->urb, GFP_KERNEL);
1006 if (errcode) {
1007 printk(KERN_INFO
1008 "HFC-S USB: submit URB error(start_int_info): status:%i\n",
1009 errcode);
1010 fifo->active = 0;
1011 fifo->skbuff = NULL;
1012 }
1013 } /* start_int_fifo */
1014
1015 /*****************************/
1016 /* set the B-channel mode */
1017 /*****************************/
1018 static void
1019 set_hfcmode(hfcusb_data * hfc, int channel, int mode)
1020 {
1021 __u8 val, idx_table[2] = { 0, 2 };
1022
1023 if (hfc->disc_flag) {
1024 return;
1025 }
1026 #ifdef CONFIG_HISAX_DEBUG
1027 DBG(ISDN_DBG, "HFC-S USB: setting channel %d to mode %d", channel,
1028 mode);
1029 #endif
1030 hfc->b_mode[channel] = mode;
1031
1032 /* setup CON_HDLC */
1033 val = 0;
1034 if (mode != L1_MODE_NULL)
1035 val = 8; /* enable fifo? */
1036 if (mode == L1_MODE_TRANS)
1037 val |= 2; /* set transparent bit */
1038
1039 /* set FIFO to transmit register */
1040 queue_control_request(hfc, HFCUSB_FIFO, idx_table[channel], 1);
1041 queue_control_request(hfc, HFCUSB_CON_HDLC, val, 1);
1042 /* reset fifo */
1043 queue_control_request(hfc, HFCUSB_INC_RES_F, 2, 1);
1044 /* set FIFO to receive register */
1045 queue_control_request(hfc, HFCUSB_FIFO, idx_table[channel] + 1, 1);
1046 queue_control_request(hfc, HFCUSB_CON_HDLC, val, 1);
1047 /* reset fifo */
1048 queue_control_request(hfc, HFCUSB_INC_RES_F, 2, 1);
1049
1050 val = 0x40;
1051 if (hfc->b_mode[0])
1052 val |= 1;
1053 if (hfc->b_mode[1])
1054 val |= 2;
1055 queue_control_request(hfc, HFCUSB_SCTRL, val, 1);
1056
1057 val = 0;
1058 if (hfc->b_mode[0])
1059 val |= 1;
1060 if (hfc->b_mode[1])
1061 val |= 2;
1062 queue_control_request(hfc, HFCUSB_SCTRL_R, val, 1);
1063
1064 if (mode == L1_MODE_NULL) {
1065 if (channel)
1066 handle_led(hfc, LED_B2_OFF);
1067 else
1068 handle_led(hfc, LED_B1_OFF);
1069 } else {
1070 if (channel)
1071 handle_led(hfc, LED_B2_ON);
1072 else
1073 handle_led(hfc, LED_B1_ON);
1074 }
1075 }
1076
1077 static void
1078 hfc_usb_l2l1(struct hisax_if *my_hisax_if, int pr, void *arg)
1079 {
1080 usb_fifo *fifo = my_hisax_if->priv;
1081 hfcusb_data *hfc = fifo->hfc;
1082
1083 switch (pr) {
1084 case PH_ACTIVATE | REQUEST:
1085 if (fifo->fifonum == HFCUSB_D_TX) {
1086 #ifdef CONFIG_HISAX_DEBUG
1087 DBG(ISDN_DBG,
1088 "HFC_USB: hfc_usb_d_l2l1 D-chan: PH_ACTIVATE | REQUEST");
1089 #endif
1090 if (hfc->l1_state != 3
1091 && hfc->l1_state != 7) {
1092 hfc->d_if.ifc.l1l2(&hfc->d_if.ifc,
1093 PH_DEACTIVATE |
1094 INDICATION,
1095 NULL);
1096 #ifdef CONFIG_HISAX_DEBUG
1097 DBG(ISDN_DBG,
1098 "HFC-S USB: PH_DEACTIVATE | INDICATION sent (not state 3 or 7)");
1099 #endif
1100 } else {
1101 if (hfc->l1_state == 7) { /* l1 already active */
1102 hfc->d_if.ifc.l1l2(&hfc->
1103 d_if.
1104 ifc,
1105 PH_ACTIVATE
1106 |
1107 INDICATION,
1108 NULL);
1109 #ifdef CONFIG_HISAX_DEBUG
1110 DBG(ISDN_DBG,
1111 "HFC-S USB: PH_ACTIVATE | INDICATION sent again ;)");
1112 #endif
1113 } else {
1114 /* force sending sending INFO1 */
1115 queue_control_request(hfc,
1116 HFCUSB_STATES,
1117 0x14,
1118 1);
1119 mdelay(1);
1120 /* start l1 activation */
1121 queue_control_request(hfc,
1122 HFCUSB_STATES,
1123 0x04,
1124 1);
1125 if (!timer_pending
1126 (&hfc->t3_timer)) {
1127 hfc->t3_timer.
1128 expires =
1129 jiffies +
1130 (HFC_TIMER_T3 *
1131 HZ) / 1000;
1132 add_timer(&hfc->
1133 t3_timer);
1134 }
1135 }
1136 }
1137 } else {
1138 #ifdef CONFIG_HISAX_DEBUG
1139 DBG(ISDN_DBG,
1140 "HFC_USB: hfc_usb_d_l2l1 Bx-chan: PH_ACTIVATE | REQUEST");
1141 #endif
1142 set_hfcmode(hfc,
1143 (fifo->fifonum ==
1144 HFCUSB_B1_TX) ? 0 : 1,
1145 (long) arg);
1146 fifo->hif->l1l2(fifo->hif,
1147 PH_ACTIVATE | INDICATION,
1148 NULL);
1149 }
1150 break;
1151 case PH_DEACTIVATE | REQUEST:
1152 if (fifo->fifonum == HFCUSB_D_TX) {
1153 #ifdef CONFIG_HISAX_DEBUG
1154 DBG(ISDN_DBG,
1155 "HFC_USB: hfc_usb_d_l2l1 D-chan: PH_DEACTIVATE | REQUEST");
1156 #endif
1157 printk(KERN_INFO
1158 "HFC-S USB: ISDN TE device should not deativate...\n");
1159 } else {
1160 #ifdef CONFIG_HISAX_DEBUG
1161 DBG(ISDN_DBG,
1162 "HFC_USB: hfc_usb_d_l2l1 Bx-chan: PH_DEACTIVATE | REQUEST");
1163 #endif
1164 set_hfcmode(hfc,
1165 (fifo->fifonum ==
1166 HFCUSB_B1_TX) ? 0 : 1,
1167 (int) L1_MODE_NULL);
1168 fifo->hif->l1l2(fifo->hif,
1169 PH_DEACTIVATE | INDICATION,
1170 NULL);
1171 }
1172 break;
1173 case PH_DATA | REQUEST:
1174 if (fifo->skbuff && fifo->delete_flg) {
1175 dev_kfree_skb_any(fifo->skbuff);
1176 fifo->skbuff = NULL;
1177 fifo->delete_flg = false;
1178 }
1179 fifo->skbuff = arg; /* we have a new buffer */
1180 break;
1181 default:
1182 printk(KERN_INFO
1183 "HFC_USB: hfc_usb_d_l2l1: unkown state : %#x\n",
1184 pr);
1185 break;
1186 }
1187 }
1188
1189 /***************************************************************************/
1190 /* usb_init is called once when a new matching device is detected to setup */
1191 /* main parameters. It registers the driver at the main hisax module. */
1192 /* on success 0 is returned. */
1193 /***************************************************************************/
1194 static int
1195 usb_init(hfcusb_data * hfc)
1196 {
1197 usb_fifo *fifo;
1198 int i, err;
1199 u_char b;
1200 struct hisax_b_if *p_b_if[2];
1201
1202 /* check the chip id */
1203 if (read_usb(hfc, HFCUSB_CHIP_ID, &b) != 1) {
1204 printk(KERN_INFO "HFC-USB: cannot read chip id\n");
1205 return (1);
1206 }
1207 if (b != HFCUSB_CHIPID) {
1208 printk(KERN_INFO "HFC-S USB: Invalid chip id 0x%02x\n", b);
1209 return (1);
1210 }
1211
1212 /* first set the needed config, interface and alternate */
1213 err = usb_set_interface(hfc->dev, hfc->if_used, hfc->alt_used);
1214
1215 /* do Chip reset */
1216 write_usb(hfc, HFCUSB_CIRM, 8);
1217 /* aux = output, reset off */
1218 write_usb(hfc, HFCUSB_CIRM, 0x10);
1219
1220 /* set USB_SIZE to match the wMaxPacketSize for INT or BULK transfers */
1221 write_usb(hfc, HFCUSB_USB_SIZE,
1222 (hfc->packet_size / 8) | ((hfc->packet_size / 8) << 4));
1223
1224 /* set USB_SIZE_I to match the wMaxPacketSize for ISO transfers */
1225 write_usb(hfc, HFCUSB_USB_SIZE_I, hfc->iso_packet_size);
1226
1227 /* enable PCM/GCI master mode */
1228 write_usb(hfc, HFCUSB_MST_MODE1, 0); /* set default values */
1229 write_usb(hfc, HFCUSB_MST_MODE0, 1); /* enable master mode */
1230
1231 /* init the fifos */
1232 write_usb(hfc, HFCUSB_F_THRES,
1233 (HFCUSB_TX_THRESHOLD /
1234 8) | ((HFCUSB_RX_THRESHOLD / 8) << 4));
1235
1236 fifo = hfc->fifos;
1237 for (i = 0; i < HFCUSB_NUM_FIFOS; i++) {
1238 write_usb(hfc, HFCUSB_FIFO, i); /* select the desired fifo */
1239 fifo[i].skbuff = NULL; /* init buffer pointer */
1240 fifo[i].max_size =
1241 (i <= HFCUSB_B2_RX) ? MAX_BCH_SIZE : MAX_DFRAME_LEN;
1242 fifo[i].last_urblen = 0;
1243 /* set 2 bit for D- & E-channel */
1244 write_usb(hfc, HFCUSB_HDLC_PAR,
1245 ((i <= HFCUSB_B2_RX) ? 0 : 2));
1246 /* rx hdlc, enable IFF for D-channel */
1247 write_usb(hfc, HFCUSB_CON_HDLC,
1248 ((i == HFCUSB_D_TX) ? 0x09 : 0x08));
1249 write_usb(hfc, HFCUSB_INC_RES_F, 2); /* reset the fifo */
1250 }
1251
1252 write_usb(hfc, HFCUSB_CLKDEL, 0x0f); /* clock delay value */
1253 write_usb(hfc, HFCUSB_STATES, 3 | 0x10); /* set deactivated mode */
1254 write_usb(hfc, HFCUSB_STATES, 3); /* enable state machine */
1255
1256 write_usb(hfc, HFCUSB_SCTRL_R, 0); /* disable both B receivers */
1257 write_usb(hfc, HFCUSB_SCTRL, 0x40); /* disable B transmitters + capacitive mode */
1258
1259 /* set both B-channel to not connected */
1260 hfc->b_mode[0] = L1_MODE_NULL;
1261 hfc->b_mode[1] = L1_MODE_NULL;
1262
1263 hfc->l1_activated = false;
1264 hfc->disc_flag = false;
1265 hfc->led_state = 0;
1266 hfc->led_new_data = 0;
1267 hfc->old_led_state = 0;
1268
1269 /* init the t3 timer */
1270 init_timer(&hfc->t3_timer);
1271 hfc->t3_timer.data = (long) hfc;
1272 hfc->t3_timer.function = (void *) l1_timer_expire_t3;
1273
1274 /* init the t4 timer */
1275 init_timer(&hfc->t4_timer);
1276 hfc->t4_timer.data = (long) hfc;
1277 hfc->t4_timer.function = (void *) l1_timer_expire_t4;
1278
1279 /* init the background machinery for control requests */
1280 hfc->ctrl_read.bRequestType = 0xc0;
1281 hfc->ctrl_read.bRequest = 1;
1282 hfc->ctrl_read.wLength = cpu_to_le16(1);
1283 hfc->ctrl_write.bRequestType = 0x40;
1284 hfc->ctrl_write.bRequest = 0;
1285 hfc->ctrl_write.wLength = 0;
1286 usb_fill_control_urb(hfc->ctrl_urb,
1287 hfc->dev,
1288 hfc->ctrl_out_pipe,
1289 (u_char *) & hfc->ctrl_write,
1290 NULL, 0, ctrl_complete, hfc);
1291 /* Init All Fifos */
1292 for (i = 0; i < HFCUSB_NUM_FIFOS; i++) {
1293 hfc->fifos[i].iso[0].purb = NULL;
1294 hfc->fifos[i].iso[1].purb = NULL;
1295 hfc->fifos[i].active = 0;
1296 }
1297 /* register Modul to upper Hisax Layers */
1298 hfc->d_if.owner = THIS_MODULE;
1299 hfc->d_if.ifc.priv = &hfc->fifos[HFCUSB_D_TX];
1300 hfc->d_if.ifc.l2l1 = hfc_usb_l2l1;
1301 for (i = 0; i < 2; i++) {
1302 hfc->b_if[i].ifc.priv = &hfc->fifos[HFCUSB_B1_TX + i * 2];
1303 hfc->b_if[i].ifc.l2l1 = hfc_usb_l2l1;
1304 p_b_if[i] = &hfc->b_if[i];
1305 }
1306 /* default Prot: EURO ISDN, should be a module_param */
1307 hfc->protocol = 2;
1308 hisax_register(&hfc->d_if, p_b_if, "hfc_usb", hfc->protocol);
1309
1310 #ifdef CONFIG_HISAX_DEBUG
1311 hfc_debug = debug;
1312 #endif
1313
1314 for (i = 0; i < 4; i++)
1315 hfc->fifos[i].hif = &p_b_if[i / 2]->ifc;
1316 for (i = 4; i < 8; i++)
1317 hfc->fifos[i].hif = &hfc->d_if.ifc;
1318
1319 /* 3 (+1) INT IN + 3 ISO OUT */
1320 if (hfc->cfg_used == CNF_3INT3ISO || hfc->cfg_used == CNF_4INT3ISO) {
1321 start_int_fifo(hfc->fifos + HFCUSB_D_RX);
1322 if (hfc->fifos[HFCUSB_PCM_RX].pipe)
1323 start_int_fifo(hfc->fifos + HFCUSB_PCM_RX);
1324 start_int_fifo(hfc->fifos + HFCUSB_B1_RX);
1325 start_int_fifo(hfc->fifos + HFCUSB_B2_RX);
1326 }
1327 /* 3 (+1) ISO IN + 3 ISO OUT */
1328 if (hfc->cfg_used == CNF_3ISO3ISO || hfc->cfg_used == CNF_4ISO3ISO) {
1329 start_isoc_chain(hfc->fifos + HFCUSB_D_RX, ISOC_PACKETS_D,
1330 rx_iso_complete, 16);
1331 if (hfc->fifos[HFCUSB_PCM_RX].pipe)
1332 start_isoc_chain(hfc->fifos + HFCUSB_PCM_RX,
1333 ISOC_PACKETS_D, rx_iso_complete,
1334 16);
1335 start_isoc_chain(hfc->fifos + HFCUSB_B1_RX, ISOC_PACKETS_B,
1336 rx_iso_complete, 16);
1337 start_isoc_chain(hfc->fifos + HFCUSB_B2_RX, ISOC_PACKETS_B,
1338 rx_iso_complete, 16);
1339 }
1340
1341 start_isoc_chain(hfc->fifos + HFCUSB_D_TX, ISOC_PACKETS_D,
1342 tx_iso_complete, 1);
1343 start_isoc_chain(hfc->fifos + HFCUSB_B1_TX, ISOC_PACKETS_B,
1344 tx_iso_complete, 1);
1345 start_isoc_chain(hfc->fifos + HFCUSB_B2_TX, ISOC_PACKETS_B,
1346 tx_iso_complete, 1);
1347
1348 handle_led(hfc, LED_POWER_ON);
1349
1350 return (0);
1351 } /* usb_init */
1352
1353 /*************************************************/
1354 /* function called to probe a new plugged device */
1355 /*************************************************/
1356 static int
1357 hfc_usb_probe(struct usb_interface *intf, const struct usb_device_id *id)
1358 {
1359 struct usb_device *dev = interface_to_usbdev(intf);
1360 hfcusb_data *context;
1361 struct usb_host_interface *iface = intf->cur_altsetting;
1362 struct usb_host_interface *iface_used = NULL;
1363 struct usb_host_endpoint *ep;
1364 int ifnum = iface->desc.bInterfaceNumber;
1365 int i, idx, alt_idx, probe_alt_setting, vend_idx, cfg_used, *vcf,
1366 attr, cfg_found, cidx, ep_addr;
1367 int cmptbl[16], small_match, iso_packet_size, packet_size,
1368 alt_used = 0;
1369 hfcsusb_vdata *driver_info;
1370
1371 vend_idx = 0xffff;
1372 for (i = 0; hfcusb_idtab[i].idVendor; i++) {
1373 if ((le16_to_cpu(dev->descriptor.idVendor) == hfcusb_idtab[i].idVendor)
1374 && (le16_to_cpu(dev->descriptor.idProduct) == hfcusb_idtab[i].idProduct)) {
1375 vend_idx = i;
1376 continue;
1377 }
1378 }
1379
1380 #ifdef CONFIG_HISAX_DEBUG
1381 DBG(USB_DBG,
1382 "HFC-USB: probing interface(%d) actalt(%d) minor(%d)\n", ifnum,
1383 iface->desc.bAlternateSetting, intf->minor);
1384 #endif
1385 printk(KERN_INFO
1386 "HFC-S USB: probing interface(%d) actalt(%d) minor(%d)\n",
1387 ifnum, iface->desc.bAlternateSetting, intf->minor);
1388
1389 if (vend_idx != 0xffff) {
1390 /* if vendor and product ID is OK, start probing alternate settings */
1391 alt_idx = 0;
1392 small_match = 0xffff;
1393
1394 /* default settings */
1395 iso_packet_size = 16;
1396 packet_size = 64;
1397
1398 while (alt_idx < intf->num_altsetting) {
1399 iface = intf->altsetting + alt_idx;
1400 probe_alt_setting = iface->desc.bAlternateSetting;
1401 cfg_used = 0;
1402
1403 /* check for config EOL element */
1404 while (validconf[cfg_used][0]) {
1405 cfg_found = true;
1406 vcf = validconf[cfg_used];
1407 /* first endpoint descriptor */
1408 ep = iface->endpoint;
1409 #ifdef CONFIG_HISAX_DEBUG
1410 DBG(USB_DBG,
1411 "HFC-S USB: (if=%d alt=%d cfg_used=%d)\n",
1412 ifnum, probe_alt_setting, cfg_used);
1413 #endif
1414 memcpy(cmptbl, vcf, 16 * sizeof(int));
1415
1416 /* check for all endpoints in this alternate setting */
1417 for (i = 0; i < iface->desc.bNumEndpoints;
1418 i++) {
1419 ep_addr =
1420 ep->desc.bEndpointAddress;
1421 /* get endpoint base */
1422 idx = ((ep_addr & 0x7f) - 1) * 2;
1423 if (ep_addr & 0x80)
1424 idx++;
1425 attr = ep->desc.bmAttributes;
1426 if (cmptbl[idx] == EP_NUL) {
1427 cfg_found = false;
1428 }
1429 if (attr == USB_ENDPOINT_XFER_INT
1430 && cmptbl[idx] == EP_INT)
1431 cmptbl[idx] = EP_NUL;
1432 if (attr == USB_ENDPOINT_XFER_BULK
1433 && cmptbl[idx] == EP_BLK)
1434 cmptbl[idx] = EP_NUL;
1435 if (attr == USB_ENDPOINT_XFER_ISOC
1436 && cmptbl[idx] == EP_ISO)
1437 cmptbl[idx] = EP_NUL;
1438
1439 /* check if all INT endpoints match minimum interval */
1440 if (attr == USB_ENDPOINT_XFER_INT
1441 && ep->desc.bInterval <
1442 vcf[17]) {
1443 #ifdef CONFIG_HISAX_DEBUG
1444 if (cfg_found)
1445 DBG(USB_DBG,
1446 "HFC-S USB: Interrupt Endpoint interval < %d found - skipping config",
1447 vcf[17]);
1448 #endif
1449 cfg_found = false;
1450 }
1451 ep++;
1452 }
1453 for (i = 0; i < 16; i++) {
1454 /* all entries must be EP_NOP or EP_NUL for a valid config */
1455 if (cmptbl[i] != EP_NOP
1456 && cmptbl[i] != EP_NUL)
1457 cfg_found = false;
1458 }
1459 if (cfg_found) {
1460 if (cfg_used < small_match) {
1461 small_match = cfg_used;
1462 alt_used =
1463 probe_alt_setting;
1464 iface_used = iface;
1465 }
1466 #ifdef CONFIG_HISAX_DEBUG
1467 DBG(USB_DBG,
1468 "HFC-USB: small_match=%x %x\n",
1469 small_match, alt_used);
1470 #endif
1471 }
1472 cfg_used++;
1473 }
1474 alt_idx++;
1475 } /* (alt_idx < intf->num_altsetting) */
1476
1477 /* found a valid USB Ta Endpint config */
1478 if (small_match != 0xffff) {
1479 iface = iface_used;
1480 if (!
1481 (context =
1482 kzalloc(sizeof(hfcusb_data), GFP_KERNEL)))
1483 return (-ENOMEM); /* got no mem */
1484
1485 ep = iface->endpoint;
1486 vcf = validconf[small_match];
1487
1488 for (i = 0; i < iface->desc.bNumEndpoints; i++) {
1489 ep_addr = ep->desc.bEndpointAddress;
1490 /* get endpoint base */
1491 idx = ((ep_addr & 0x7f) - 1) * 2;
1492 if (ep_addr & 0x80)
1493 idx++;
1494 cidx = idx & 7;
1495 attr = ep->desc.bmAttributes;
1496
1497 /* init Endpoints */
1498 if (vcf[idx] != EP_NOP
1499 && vcf[idx] != EP_NUL) {
1500 switch (attr) {
1501 case USB_ENDPOINT_XFER_INT:
1502 context->
1503 fifos[cidx].
1504 pipe =
1505 usb_rcvintpipe
1506 (dev,
1507 ep->desc.
1508 bEndpointAddress);
1509 context->
1510 fifos[cidx].
1511 usb_transfer_mode
1512 = USB_INT;
1513 packet_size =
1514 le16_to_cpu(ep->desc.wMaxPacketSize);
1515 break;
1516 case USB_ENDPOINT_XFER_BULK:
1517 if (ep_addr & 0x80)
1518 context->
1519 fifos
1520 [cidx].
1521 pipe =
1522 usb_rcvbulkpipe
1523 (dev,
1524 ep->
1525 desc.
1526 bEndpointAddress);
1527 else
1528 context->
1529 fifos
1530 [cidx].
1531 pipe =
1532 usb_sndbulkpipe
1533 (dev,
1534 ep->
1535 desc.
1536 bEndpointAddress);
1537 context->
1538 fifos[cidx].
1539 usb_transfer_mode
1540 = USB_BULK;
1541 packet_size =
1542 le16_to_cpu(ep->desc.wMaxPacketSize);
1543 break;
1544 case USB_ENDPOINT_XFER_ISOC:
1545 if (ep_addr & 0x80)
1546 context->
1547 fifos
1548 [cidx].
1549 pipe =
1550 usb_rcvisocpipe
1551 (dev,
1552 ep->
1553 desc.
1554 bEndpointAddress);
1555 else
1556 context->
1557 fifos
1558 [cidx].
1559 pipe =
1560 usb_sndisocpipe
1561 (dev,
1562 ep->
1563 desc.
1564 bEndpointAddress);
1565 context->
1566 fifos[cidx].
1567 usb_transfer_mode
1568 = USB_ISOC;
1569 iso_packet_size =
1570 le16_to_cpu(ep->desc.wMaxPacketSize);
1571 break;
1572 default:
1573 context->
1574 fifos[cidx].
1575 pipe = 0;
1576 } /* switch attribute */
1577
1578 if (context->fifos[cidx].pipe) {
1579 context->fifos[cidx].
1580 fifonum = cidx;
1581 context->fifos[cidx].hfc =
1582 context;
1583 context->fifos[cidx].usb_packet_maxlen =
1584 le16_to_cpu(ep->desc.wMaxPacketSize);
1585 context->fifos[cidx].
1586 intervall =
1587 ep->desc.bInterval;
1588 context->fifos[cidx].
1589 skbuff = NULL;
1590 }
1591 }
1592 ep++;
1593 }
1594 context->dev = dev; /* save device */
1595 context->if_used = ifnum; /* save used interface */
1596 context->alt_used = alt_used; /* and alternate config */
1597 context->ctrl_paksize = dev->descriptor.bMaxPacketSize0; /* control size */
1598 context->cfg_used = vcf[16]; /* store used config */
1599 context->vend_idx = vend_idx; /* store found vendor */
1600 context->packet_size = packet_size;
1601 context->iso_packet_size = iso_packet_size;
1602
1603 /* create the control pipes needed for register access */
1604 context->ctrl_in_pipe =
1605 usb_rcvctrlpipe(context->dev, 0);
1606 context->ctrl_out_pipe =
1607 usb_sndctrlpipe(context->dev, 0);
1608 context->ctrl_urb = usb_alloc_urb(0, GFP_KERNEL);
1609
1610 driver_info =
1611 (hfcsusb_vdata *) hfcusb_idtab[vend_idx].
1612 driver_info;
1613 printk(KERN_INFO "HFC-S USB: detected \"%s\"\n",
1614 driver_info->vend_name);
1615 #ifdef CONFIG_HISAX_DEBUG
1616 DBG(USB_DBG,
1617 "HFC-S USB: Endpoint-Config: %s (if=%d alt=%d)\n",
1618 conf_str[small_match], context->if_used,
1619 context->alt_used);
1620 printk(KERN_INFO
1621 "HFC-S USB: E-channel (\"ECHO:\") logging ");
1622 if (validconf[small_match][18])
1623 printk(" possible\n");
1624 else
1625 printk("NOT possible\n");
1626 #endif
1627 /* init the chip and register the driver */
1628 if (usb_init(context)) {
1629 if (context->ctrl_urb) {
1630 usb_unlink_urb(context->ctrl_urb);
1631 usb_free_urb(context->ctrl_urb);
1632 context->ctrl_urb = NULL;
1633 }
1634 kfree(context);
1635 return (-EIO);
1636 }
1637 usb_set_intfdata(intf, context);
1638 return (0);
1639 }
1640 } else {
1641 printk(KERN_INFO
1642 "HFC-S USB: no valid vendor found in USB descriptor\n");
1643 }
1644 return (-EIO);
1645 }
1646
1647 /****************************************************/
1648 /* function called when an active device is removed */
1649 /****************************************************/
1650 static void
1651 hfc_usb_disconnect(struct usb_interface
1652 *intf)
1653 {
1654 hfcusb_data *context = usb_get_intfdata(intf);
1655 int i;
1656 printk(KERN_INFO "HFC-S USB: device disconnect\n");
1657 context->disc_flag = true;
1658 usb_set_intfdata(intf, NULL);
1659 if (!context)
1660 return;
1661 if (timer_pending(&context->t3_timer))
1662 del_timer(&context->t3_timer);
1663 if (timer_pending(&context->t4_timer))
1664 del_timer(&context->t4_timer);
1665 /* tell all fifos to terminate */
1666 for (i = 0; i < HFCUSB_NUM_FIFOS; i++) {
1667 if (context->fifos[i].usb_transfer_mode == USB_ISOC) {
1668 if (context->fifos[i].active > 0) {
1669 stop_isoc_chain(&context->fifos[i]);
1670 #ifdef CONFIG_HISAX_DEBUG
1671 DBG(USB_DBG,
1672 "HFC-S USB: hfc_usb_disconnect: stopping ISOC chain Fifo no %i",
1673 i);
1674 #endif
1675 }
1676 } else {
1677 if (context->fifos[i].active > 0) {
1678 context->fifos[i].active = 0;
1679 #ifdef CONFIG_HISAX_DEBUG
1680 DBG(USB_DBG,
1681 "HFC-S USB: hfc_usb_disconnect: unlinking URB for Fifo no %i",
1682 i);
1683 #endif
1684 }
1685 if (context->fifos[i].urb) {
1686 usb_unlink_urb(context->fifos[i].urb);
1687 usb_free_urb(context->fifos[i].urb);
1688 context->fifos[i].urb = NULL;
1689 }
1690 }
1691 context->fifos[i].active = 0;
1692 }
1693 /* wait for all URBS to terminate */
1694 mdelay(10);
1695 if (context->ctrl_urb) {
1696 usb_unlink_urb(context->ctrl_urb);
1697 usb_free_urb(context->ctrl_urb);
1698 context->ctrl_urb = NULL;
1699 }
1700 hisax_unregister(&context->d_if);
1701 kfree(context); /* free our structure again */
1702 } /* hfc_usb_disconnect */
1703
1704 /************************************/
1705 /* our driver information structure */
1706 /************************************/
1707 static struct usb_driver hfc_drv = {
1708 .name = "hfc_usb",
1709 .id_table = hfcusb_idtab,
1710 .probe = hfc_usb_probe,
1711 .disconnect = hfc_usb_disconnect,
1712 };
1713 static void __exit
1714 hfc_usb_exit(void)
1715 {
1716 #ifdef CONFIG_HISAX_DEBUG
1717 DBG(USB_DBG, "HFC-S USB: calling \"hfc_usb_exit\" ...");
1718 #endif
1719 usb_deregister(&hfc_drv); /* release our driver */
1720 printk(KERN_INFO "HFC-S USB: module removed\n");
1721 }
1722
1723 static int __init
1724 hfc_usb_init(void)
1725 {
1726 #ifndef CONFIG_HISAX_DEBUG
1727 unsigned int debug = -1;
1728 #endif
1729 char revstr[30], datestr[30], dummy[30];
1730 sscanf(hfcusb_revision,
1731 "%s %s $ %s %s %s $ ", dummy, revstr,
1732 dummy, datestr, dummy);
1733 printk(KERN_INFO
1734 "HFC-S USB: driver module revision %s date %s loaded, (debug=%i)\n",
1735 revstr, datestr, debug);
1736 if (usb_register(&hfc_drv)) {
1737 printk(KERN_INFO
1738 "HFC-S USB: Unable to register HFC-S USB module at usb stack\n");
1739 return (-1); /* unable to register */
1740 }
1741 return (0);
1742 }
1743
1744 module_init(hfc_usb_init);
1745 module_exit(hfc_usb_exit);
1746 MODULE_AUTHOR(DRIVER_AUTHOR);
1747 MODULE_DESCRIPTION(DRIVER_DESC);
1748 MODULE_LICENSE("GPL");
1749 MODULE_DEVICE_TABLE(usb, hfcusb_idtab);
Linux kernel - Deliverables
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