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update checkpatch.pl to version 0.05
[pv_ops_mirror.git] / drivers / isdn / hisax / hfc_usb.c
blobb1a26e02df0263476c53a7de9faf9385ba94c26d
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 urb->dev = dev;
489 urb->pipe = pipe;
490 urb->complete = complete;
491 urb->number_of_packets = num_packets;
492 urb->transfer_buffer_length = packet_size * num_packets;
493 urb->context = context;
494 urb->transfer_buffer = buf;
495 urb->transfer_flags = URB_ISO_ASAP;
496 urb->actual_length = 0;
497 urb->interval = interval;
498 for (k = 0; k < num_packets; k++) {
499 urb->iso_frame_desc[k].offset = packet_size * k;
500 urb->iso_frame_desc[k].length = packet_size;
501 urb->iso_frame_desc[k].actual_length = 0;
502 }
503 }
504
505 /* allocs urbs and start isoc transfer with two pending urbs to avoid
506 gaps in the transfer chain */
507 static int
508 start_isoc_chain(usb_fifo * fifo, int num_packets_per_urb,
509 usb_complete_t complete, int packet_size)
510 {
511 int i, k, errcode;
512
513 printk(KERN_INFO "HFC-S USB: starting ISO-chain for Fifo %i\n",
514 fifo->fifonum);
515
516 /* allocate Memory for Iso out Urbs */
517 for (i = 0; i < 2; i++) {
518 if (!(fifo->iso[i].purb)) {
519 fifo->iso[i].purb =
520 usb_alloc_urb(num_packets_per_urb, GFP_KERNEL);
521 if (!(fifo->iso[i].purb)) {
522 printk(KERN_INFO
523 "alloc urb for fifo %i failed!!!",
524 fifo->fifonum);
525 }
526 fifo->iso[i].owner_fifo = (struct usb_fifo *) fifo;
527
528 /* Init the first iso */
529 if (ISO_BUFFER_SIZE >=
530 (fifo->usb_packet_maxlen *
531 num_packets_per_urb)) {
532 fill_isoc_urb(fifo->iso[i].purb,
533 fifo->hfc->dev, fifo->pipe,
534 fifo->iso[i].buffer,
535 num_packets_per_urb,
536 fifo->usb_packet_maxlen,
537 fifo->intervall, complete,
538 &fifo->iso[i]);
539 memset(fifo->iso[i].buffer, 0,
540 sizeof(fifo->iso[i].buffer));
541 /* defining packet delimeters in fifo->buffer */
542 for (k = 0; k < num_packets_per_urb; k++) {
543 fifo->iso[i].purb->
544 iso_frame_desc[k].offset =
545 k * packet_size;
546 fifo->iso[i].purb->
547 iso_frame_desc[k].length =
548 packet_size;
549 }
550 } else {
551 printk(KERN_INFO
552 "HFC-S USB: ISO Buffer size to small!\n");
553 }
554 }
555 fifo->bit_line = BITLINE_INF;
556
557 errcode = usb_submit_urb(fifo->iso[i].purb, GFP_KERNEL);
558 fifo->active = (errcode >= 0) ? 1 : 0;
559 if (errcode < 0) {
560 printk(KERN_INFO "HFC-S USB: %s URB nr:%d\n",
561 symbolic(urb_errlist, errcode), i);
562 };
563 }
564 return (fifo->active);
565 }
566
567 /* stops running iso chain and frees their pending urbs */
568 static void
569 stop_isoc_chain(usb_fifo * fifo)
570 {
571 int i;
572
573 for (i = 0; i < 2; i++) {
574 if (fifo->iso[i].purb) {
575 #ifdef CONFIG_HISAX_DEBUG
576 DBG(USB_DBG,
577 "HFC-S USB: Stopping iso chain for fifo %i.%i",
578 fifo->fifonum, i);
579 #endif
580 usb_kill_urb(fifo->iso[i].purb);
581 usb_free_urb(fifo->iso[i].purb);
582 fifo->iso[i].purb = NULL;
583 }
584 }
585 usb_kill_urb(fifo->urb);
586 usb_free_urb(fifo->urb);
587 fifo->urb = NULL;
588 fifo->active = 0;
589 }
590
591 /* defines how much ISO packets are handled in one URB */
592 static int iso_packets[8] =
593 { ISOC_PACKETS_B, ISOC_PACKETS_B, ISOC_PACKETS_B, ISOC_PACKETS_B,
594 ISOC_PACKETS_D, ISOC_PACKETS_D, ISOC_PACKETS_D, ISOC_PACKETS_D
595 };
596
597 /*****************************************************/
598 /* transmit completion routine for all ISO tx fifos */
599 /*****************************************************/
600 static void
601 tx_iso_complete(struct urb *urb)
602 {
603 iso_urb_struct *context_iso_urb = (iso_urb_struct *) urb->context;
604 usb_fifo *fifo = context_iso_urb->owner_fifo;
605 hfcusb_data *hfc = fifo->hfc;
606 int k, tx_offset, num_isoc_packets, sink, len, current_len,
607 errcode;
608 int frame_complete, transp_mode, fifon, status;
609 __u8 threshbit;
610 __u8 threshtable[8] = { 1, 2, 4, 8, 0x10, 0x20, 0x40, 0x80 };
611
612 fifon = fifo->fifonum;
613 status = urb->status;
614
615 tx_offset = 0;
616
617 if (fifo->active && !status) {
618 transp_mode = 0;
619 if (fifon < 4 && hfc->b_mode[fifon / 2] == L1_MODE_TRANS)
620 transp_mode = true;
621
622 /* is FifoFull-threshold set for our channel? */
623 threshbit = threshtable[fifon] & hfc->threshold_mask;
624 num_isoc_packets = iso_packets[fifon];
625
626 /* predict dataflow to avoid fifo overflow */
627 if (fifon >= HFCUSB_D_TX) {
628 sink = (threshbit) ? SINK_DMIN : SINK_DMAX;
629 } else {
630 sink = (threshbit) ? SINK_MIN : SINK_MAX;
631 }
632 fill_isoc_urb(urb, fifo->hfc->dev, fifo->pipe,
633 context_iso_urb->buffer, num_isoc_packets,
634 fifo->usb_packet_maxlen, fifo->intervall,
635 tx_iso_complete, urb->context);
636 memset(context_iso_urb->buffer, 0,
637 sizeof(context_iso_urb->buffer));
638 frame_complete = false;
639 /* Generate next Iso Packets */
640 for (k = 0; k < num_isoc_packets; ++k) {
641 if (fifo->skbuff) {
642 len = fifo->skbuff->len;
643 /* we lower data margin every msec */
644 fifo->bit_line -= sink;
645 current_len = (0 - fifo->bit_line) / 8;
646 /* maximum 15 byte for every ISO packet makes our life easier */
647 if (current_len > 14)
648 current_len = 14;
649 current_len =
650 (len <=
651 current_len) ? len : current_len;
652 /* how much bit do we put on the line? */
653 fifo->bit_line += current_len * 8;
654
655 context_iso_urb->buffer[tx_offset] = 0;
656 if (current_len == len) {
657 if (!transp_mode) {
658 /* here frame completion */
659 context_iso_urb->
660 buffer[tx_offset] = 1;
661 /* add 2 byte flags and 16bit CRC at end of ISDN frame */
662 fifo->bit_line += 32;
663 }
664 frame_complete = true;
665 }
666
667 memcpy(context_iso_urb->buffer +
668 tx_offset + 1, fifo->skbuff->data,
669 current_len);
670 skb_pull(fifo->skbuff, current_len);
671
672 /* define packet delimeters within the URB buffer */
673 urb->iso_frame_desc[k].offset = tx_offset;
674 urb->iso_frame_desc[k].length =
675 current_len + 1;
676
677 tx_offset += (current_len + 1);
678 } else {
679 urb->iso_frame_desc[k].offset =
680 tx_offset++;
681
682 urb->iso_frame_desc[k].length = 1;
683 fifo->bit_line -= sink; /* we lower data margin every msec */
684
685 if (fifo->bit_line < BITLINE_INF) {
686 fifo->bit_line = BITLINE_INF;
687 }
688 }
689
690 if (frame_complete) {
691 fifo->delete_flg = true;
692 fifo->hif->l1l2(fifo->hif,
693 PH_DATA | CONFIRM,
694 (void *) (unsigned long) fifo->skbuff->
695 truesize);
696 if (fifo->skbuff && fifo->delete_flg) {
697 dev_kfree_skb_any(fifo->skbuff);
698 fifo->skbuff = NULL;
699 fifo->delete_flg = false;
700 }
701 frame_complete = false;
702 }
703 }
704 errcode = usb_submit_urb(urb, GFP_ATOMIC);
705 if (errcode < 0) {
706 printk(KERN_INFO
707 "HFC-S USB: error submitting ISO URB: %d \n",
708 errcode);
709 }
710 } else {
711 if (status && !hfc->disc_flag) {
712 printk(KERN_INFO
713 "HFC-S USB: tx_iso_complete : urb->status %s (%i), fifonum=%d\n",
714 symbolic(urb_errlist, status), status,
715 fifon);
716 }
717 }
718 } /* tx_iso_complete */
719
720 /*****************************************************/
721 /* receive completion routine for all ISO tx fifos */
722 /*****************************************************/
723 static void
724 rx_iso_complete(struct urb *urb)
725 {
726 iso_urb_struct *context_iso_urb = (iso_urb_struct *) urb->context;
727 usb_fifo *fifo = context_iso_urb->owner_fifo;
728 hfcusb_data *hfc = fifo->hfc;
729 int k, len, errcode, offset, num_isoc_packets, fifon, maxlen,
730 status;
731 unsigned int iso_status;
732 __u8 *buf;
733 static __u8 eof[8];
734 #ifdef CONFIG_HISAX_DEBUG
735 __u8 i;
736 #endif
737
738 fifon = fifo->fifonum;
739 status = urb->status;
740
741 if (urb->status == -EOVERFLOW) {
742 #ifdef CONFIG_HISAX_DEBUG
743 DBG(USB_DBG,
744 "HFC-USB: ignoring USB DATAOVERRUN for fifo %i \n",
745 fifon);
746 #endif
747 status = 0;
748 }
749 if (fifo->active && !status) {
750 num_isoc_packets = iso_packets[fifon];
751 maxlen = fifo->usb_packet_maxlen;
752 for (k = 0; k < num_isoc_packets; ++k) {
753 len = urb->iso_frame_desc[k].actual_length;
754 offset = urb->iso_frame_desc[k].offset;
755 buf = context_iso_urb->buffer + offset;
756 iso_status = urb->iso_frame_desc[k].status;
757 #ifdef CONFIG_HISAX_DEBUG
758 if (iso_status && !hfc->disc_flag)
759 DBG(USB_DBG,
760 "HFC-S USB: ISO packet failure - status:%x",
761 iso_status);
762
763 if ((fifon == 5) && (debug > 1)) {
764 printk(KERN_INFO
765 "HFC-S USB: ISO-D-RX lst_urblen:%2d "
766 "act_urblen:%2d max-urblen:%2d "
767 "EOF:0x%0x DATA: ",
768 fifo->last_urblen, len, maxlen,
769 eof[5]);
770 for (i = 0; i < len; i++)
771 printk("%.2x ", buf[i]);
772 printk("\n");
773 }
774 #endif
775 if (fifo->last_urblen != maxlen) {
776 /* the threshold mask is in the 2nd status byte */
777 hfc->threshold_mask = buf[1];
778 /* care for L1 state only for D-Channel
779 to avoid overlapped iso completions */
780 if (fifon == 5) {
781 /* the S0 state is in the upper half
782 of the 1st status byte */
783 state_handler(hfc, buf[0] >> 4);
784 }
785 eof[fifon] = buf[0] & 1;
786 if (len > 2)
787 collect_rx_frame(fifo, buf + 2,
788 len - 2,
789 (len <
790 maxlen) ?
791 eof[fifon] : 0);
792 } else {
793 collect_rx_frame(fifo, buf, len,
794 (len <
795 maxlen) ? eof[fifon] :
796 0);
797 }
798 fifo->last_urblen = len;
799 }
800
801 fill_isoc_urb(urb, fifo->hfc->dev, fifo->pipe,
802 context_iso_urb->buffer, num_isoc_packets,
803 fifo->usb_packet_maxlen, fifo->intervall,
804 rx_iso_complete, urb->context);
805 errcode = usb_submit_urb(urb, GFP_ATOMIC);
806 if (errcode < 0) {
807 printk(KERN_INFO
808 "HFC-S USB: error submitting ISO URB: %d \n",
809 errcode);
810 }
811 } else {
812 if (status && !hfc->disc_flag) {
813 printk(KERN_INFO
814 "HFC-S USB: rx_iso_complete : "
815 "urb->status %d, fifonum %d\n",
816 status, fifon);
817 }
818 }
819 } /* rx_iso_complete */
820
821 /*****************************************************/
822 /* collect data from interrupt or isochron in */
823 /*****************************************************/
824 static void
825 collect_rx_frame(usb_fifo * fifo, __u8 * data, int len, int finish)
826 {
827 hfcusb_data *hfc = fifo->hfc;
828 int transp_mode, fifon;
829 #ifdef CONFIG_HISAX_DEBUG
830 int i;
831 #endif
832 fifon = fifo->fifonum;
833 transp_mode = 0;
834 if (fifon < 4 && hfc->b_mode[fifon / 2] == L1_MODE_TRANS)
835 transp_mode = true;
836
837 if (!fifo->skbuff) {
838 fifo->skbuff = dev_alloc_skb(fifo->max_size + 3);
839 if (!fifo->skbuff) {
840 printk(KERN_INFO
841 "HFC-S USB: cannot allocate buffer (dev_alloc_skb) fifo:%d\n",
842 fifon);
843 return;
844 }
845 }
846 if (len) {
847 if (fifo->skbuff->len + len < fifo->max_size) {
848 memcpy(skb_put(fifo->skbuff, len), data, len);
849 } else {
850 #ifdef CONFIG_HISAX_DEBUG
851 printk(KERN_INFO "HFC-S USB: ");
852 for (i = 0; i < 15; i++)
853 printk("%.2x ",
854 fifo->skbuff->data[fifo->skbuff->
855 len - 15 + i]);
856 printk("\n");
857 #endif
858 printk(KERN_INFO
859 "HCF-USB: got frame exceeded fifo->max_size:%d on fifo:%d\n",
860 fifo->max_size, fifon);
861 }
862 }
863 if (transp_mode && fifo->skbuff->len >= 128) {
864 fifo->hif->l1l2(fifo->hif, PH_DATA | INDICATION,
865 fifo->skbuff);
866 fifo->skbuff = NULL;
867 return;
868 }
869 /* we have a complete hdlc packet */
870 if (finish) {
871 if ((!fifo->skbuff->data[fifo->skbuff->len - 1])
872 && (fifo->skbuff->len > 3)) {
873 /* remove CRC & status */
874 skb_trim(fifo->skbuff, fifo->skbuff->len - 3);
875 if (fifon == HFCUSB_PCM_RX) {
876 fifo->hif->l1l2(fifo->hif,
877 PH_DATA_E | INDICATION,
878 fifo->skbuff);
879 } else
880 fifo->hif->l1l2(fifo->hif,
881 PH_DATA | INDICATION,
882 fifo->skbuff);
883 fifo->skbuff = NULL; /* buffer was freed from upper layer */
884 } else {
885 if (fifo->skbuff->len > 3) {
886 printk(KERN_INFO
887 "HFC-S USB: got frame %d bytes but CRC ERROR on fifo:%d!!!\n",
888 fifo->skbuff->len, fifon);
889 #ifdef CONFIG_HISAX_DEBUG
890 if (debug > 1) {
891 printk(KERN_INFO "HFC-S USB: ");
892 for (i = 0; i < 15; i++)
893 printk("%.2x ",
894 fifo->skbuff->
895 data[fifo->skbuff->
896 len - 15 + i]);
897 printk("\n");
898 }
899 #endif
900 }
901 #ifdef CONFIG_HISAX_DEBUG
902 else {
903 printk(KERN_INFO
904 "HFC-S USB: frame to small (%d bytes)!!!\n",
905 fifo->skbuff->len);
906 }
907 #endif
908 skb_trim(fifo->skbuff, 0);
909 }
910 }
911 }
912
913 /***********************************************/
914 /* receive completion routine for all rx fifos */
915 /***********************************************/
916 static void
917 rx_complete(struct urb *urb)
918 {
919 int len;
920 int status;
921 __u8 *buf, maxlen, fifon;
922 usb_fifo *fifo = (usb_fifo *) urb->context;
923 hfcusb_data *hfc = fifo->hfc;
924 static __u8 eof[8];
925 #ifdef CONFIG_HISAX_DEBUG
926 __u8 i;
927 #endif
928
929 urb->dev = hfc->dev; /* security init */
930
931 fifon = fifo->fifonum;
932 if ((!fifo->active) || (urb->status)) {
933 #ifdef CONFIG_HISAX_DEBUG
934 DBG(USB_DBG, "HFC-S USB: RX-Fifo %i is going down (%i)",
935 fifon, urb->status);
936 #endif
937 fifo->urb->interval = 0; /* cancel automatic rescheduling */
938 if (fifo->skbuff) {
939 dev_kfree_skb_any(fifo->skbuff);
940 fifo->skbuff = NULL;
941 }
942 return;
943 }
944 len = urb->actual_length;
945 buf = fifo->buffer;
946 maxlen = fifo->usb_packet_maxlen;
947
948 #ifdef CONFIG_HISAX_DEBUG
949 if ((fifon == 5) && (debug > 1)) {
950 printk(KERN_INFO
951 "HFC-S USB: INT-D-RX lst_urblen:%2d act_urblen:%2d max-urblen:%2d EOF:0x%0x DATA: ",
952 fifo->last_urblen, len, maxlen, eof[5]);
953 for (i = 0; i < len; i++)
954 printk("%.2x ", buf[i]);
955 printk("\n");
956 }
957 #endif
958
959 if (fifo->last_urblen != fifo->usb_packet_maxlen) {
960 /* the threshold mask is in the 2nd status byte */
961 hfc->threshold_mask = buf[1];
962 /* the S0 state is in the upper half of the 1st status byte */
963 state_handler(hfc, buf[0] >> 4);
964 eof[fifon] = buf[0] & 1;
965 /* if we have more than the 2 status bytes -> collect data */
966 if (len > 2)
967 collect_rx_frame(fifo, buf + 2,
968 urb->actual_length - 2,
969 (len < maxlen) ? eof[fifon] : 0);
970 } else {
971 collect_rx_frame(fifo, buf, urb->actual_length,
972 (len < maxlen) ? eof[fifon] : 0);
973 }
974 fifo->last_urblen = urb->actual_length;
975 status = usb_submit_urb(urb, GFP_ATOMIC);
976 if (status) {
977 printk(KERN_INFO
978 "HFC-S USB: error resubmitting URN at rx_complete...\n");
979 }
980 } /* rx_complete */
981
982 /***************************************************/
983 /* start the interrupt transfer for the given fifo */
984 /***************************************************/
985 static void
986 start_int_fifo(usb_fifo * fifo)
987 {
988 int errcode;
989
990 printk(KERN_INFO "HFC-S USB: starting intr IN fifo:%d\n",
991 fifo->fifonum);
992
993 if (!fifo->urb) {
994 fifo->urb = usb_alloc_urb(0, GFP_KERNEL);
995 if (!fifo->urb)
996 return;
997 }
998 usb_fill_int_urb(fifo->urb, fifo->hfc->dev, fifo->pipe,
999 fifo->buffer, fifo->usb_packet_maxlen,
1000 rx_complete, fifo, fifo->intervall);
1001 fifo->active = 1; /* must be marked active */
1002 errcode = usb_submit_urb(fifo->urb, GFP_KERNEL);
1003 if (errcode) {
1004 printk(KERN_INFO
1005 "HFC-S USB: submit URB error(start_int_info): status:%i\n",
1006 errcode);
1007 fifo->active = 0;
1008 fifo->skbuff = NULL;
1009 }
1010 } /* start_int_fifo */
1011
1012 /*****************************/
1013 /* set the B-channel mode */
1014 /*****************************/
1015 static void
1016 set_hfcmode(hfcusb_data * hfc, int channel, int mode)
1017 {
1018 __u8 val, idx_table[2] = { 0, 2 };
1019
1020 if (hfc->disc_flag) {
1021 return;
1022 }
1023 #ifdef CONFIG_HISAX_DEBUG
1024 DBG(ISDN_DBG, "HFC-S USB: setting channel %d to mode %d", channel,
1025 mode);
1026 #endif
1027 hfc->b_mode[channel] = mode;
1028
1029 /* setup CON_HDLC */
1030 val = 0;
1031 if (mode != L1_MODE_NULL)
1032 val = 8; /* enable fifo? */
1033 if (mode == L1_MODE_TRANS)
1034 val |= 2; /* set transparent bit */
1035
1036 /* set FIFO to transmit register */
1037 queue_control_request(hfc, HFCUSB_FIFO, idx_table[channel], 1);
1038 queue_control_request(hfc, HFCUSB_CON_HDLC, val, 1);
1039 /* reset fifo */
1040 queue_control_request(hfc, HFCUSB_INC_RES_F, 2, 1);
1041 /* set FIFO to receive register */
1042 queue_control_request(hfc, HFCUSB_FIFO, idx_table[channel] + 1, 1);
1043 queue_control_request(hfc, HFCUSB_CON_HDLC, val, 1);
1044 /* reset fifo */
1045 queue_control_request(hfc, HFCUSB_INC_RES_F, 2, 1);
1046
1047 val = 0x40;
1048 if (hfc->b_mode[0])
1049 val |= 1;
1050 if (hfc->b_mode[1])
1051 val |= 2;
1052 queue_control_request(hfc, HFCUSB_SCTRL, val, 1);
1053
1054 val = 0;
1055 if (hfc->b_mode[0])
1056 val |= 1;
1057 if (hfc->b_mode[1])
1058 val |= 2;
1059 queue_control_request(hfc, HFCUSB_SCTRL_R, val, 1);
1060
1061 if (mode == L1_MODE_NULL) {
1062 if (channel)
1063 handle_led(hfc, LED_B2_OFF);
1064 else
1065 handle_led(hfc, LED_B1_OFF);
1066 } else {
1067 if (channel)
1068 handle_led(hfc, LED_B2_ON);
1069 else
1070 handle_led(hfc, LED_B1_ON);
1071 }
1072 }
1073
1074 static void
1075 hfc_usb_l2l1(struct hisax_if *my_hisax_if, int pr, void *arg)
1076 {
1077 usb_fifo *fifo = my_hisax_if->priv;
1078 hfcusb_data *hfc = fifo->hfc;
1079
1080 switch (pr) {
1081 case PH_ACTIVATE | REQUEST:
1082 if (fifo->fifonum == HFCUSB_D_TX) {
1083 #ifdef CONFIG_HISAX_DEBUG
1084 DBG(ISDN_DBG,
1085 "HFC_USB: hfc_usb_d_l2l1 D-chan: PH_ACTIVATE | REQUEST");
1086 #endif
1087 if (hfc->l1_state != 3
1088 && hfc->l1_state != 7) {
1089 hfc->d_if.ifc.l1l2(&hfc->d_if.ifc,
1090 PH_DEACTIVATE |
1091 INDICATION,
1092 NULL);
1093 #ifdef CONFIG_HISAX_DEBUG
1094 DBG(ISDN_DBG,
1095 "HFC-S USB: PH_DEACTIVATE | INDICATION sent (not state 3 or 7)");
1096 #endif
1097 } else {
1098 if (hfc->l1_state == 7) { /* l1 already active */
1099 hfc->d_if.ifc.l1l2(&hfc->
1100 d_if.
1101 ifc,
1102 PH_ACTIVATE
1103 |
1104 INDICATION,
1105 NULL);
1106 #ifdef CONFIG_HISAX_DEBUG
1107 DBG(ISDN_DBG,
1108 "HFC-S USB: PH_ACTIVATE | INDICATION sent again ;)");
1109 #endif
1110 } else {
1111 /* force sending sending INFO1 */
1112 queue_control_request(hfc,
1113 HFCUSB_STATES,
1114 0x14,
1115 1);
1116 mdelay(1);
1117 /* start l1 activation */
1118 queue_control_request(hfc,
1119 HFCUSB_STATES,
1120 0x04,
1121 1);
1122 if (!timer_pending
1123 (&hfc->t3_timer)) {
1124 hfc->t3_timer.
1125 expires =
1126 jiffies +
1127 (HFC_TIMER_T3 *
1128 HZ) / 1000;
1129 add_timer(&hfc->
1130 t3_timer);
1131 }
1132 }
1133 }
1134 } else {
1135 #ifdef CONFIG_HISAX_DEBUG
1136 DBG(ISDN_DBG,
1137 "HFC_USB: hfc_usb_d_l2l1 Bx-chan: PH_ACTIVATE | REQUEST");
1138 #endif
1139 set_hfcmode(hfc,
1140 (fifo->fifonum ==
1141 HFCUSB_B1_TX) ? 0 : 1,
1142 (long) arg);
1143 fifo->hif->l1l2(fifo->hif,
1144 PH_ACTIVATE | INDICATION,
1145 NULL);
1146 }
1147 break;
1148 case PH_DEACTIVATE | REQUEST:
1149 if (fifo->fifonum == HFCUSB_D_TX) {
1150 #ifdef CONFIG_HISAX_DEBUG
1151 DBG(ISDN_DBG,
1152 "HFC_USB: hfc_usb_d_l2l1 D-chan: PH_DEACTIVATE | REQUEST");
1153 #endif
1154 printk(KERN_INFO
1155 "HFC-S USB: ISDN TE device should not deativate...\n");
1156 } else {
1157 #ifdef CONFIG_HISAX_DEBUG
1158 DBG(ISDN_DBG,
1159 "HFC_USB: hfc_usb_d_l2l1 Bx-chan: PH_DEACTIVATE | REQUEST");
1160 #endif
1161 set_hfcmode(hfc,
1162 (fifo->fifonum ==
1163 HFCUSB_B1_TX) ? 0 : 1,
1164 (int) L1_MODE_NULL);
1165 fifo->hif->l1l2(fifo->hif,
1166 PH_DEACTIVATE | INDICATION,
1167 NULL);
1168 }
1169 break;
1170 case PH_DATA | REQUEST:
1171 if (fifo->skbuff && fifo->delete_flg) {
1172 dev_kfree_skb_any(fifo->skbuff);
1173 fifo->skbuff = NULL;
1174 fifo->delete_flg = false;
1175 }
1176 fifo->skbuff = arg; /* we have a new buffer */
1177 break;
1178 default:
1179 printk(KERN_INFO
1180 "HFC_USB: hfc_usb_d_l2l1: unkown state : %#x\n",
1181 pr);
1182 break;
1183 }
1184 }
1185
1186 /***************************************************************************/
1187 /* usb_init is called once when a new matching device is detected to setup */
1188 /* main parameters. It registers the driver at the main hisax module. */
1189 /* on success 0 is returned. */
1190 /***************************************************************************/
1191 static int
1192 usb_init(hfcusb_data * hfc)
1193 {
1194 usb_fifo *fifo;
1195 int i, err;
1196 u_char b;
1197 struct hisax_b_if *p_b_if[2];
1198
1199 /* check the chip id */
1200 if (read_usb(hfc, HFCUSB_CHIP_ID, &b) != 1) {
1201 printk(KERN_INFO "HFC-USB: cannot read chip id\n");
1202 return (1);
1203 }
1204 if (b != HFCUSB_CHIPID) {
1205 printk(KERN_INFO "HFC-S USB: Invalid chip id 0x%02x\n", b);
1206 return (1);
1207 }
1208
1209 /* first set the needed config, interface and alternate */
1210 err = usb_set_interface(hfc->dev, hfc->if_used, hfc->alt_used);
1211
1212 /* do Chip reset */
1213 write_usb(hfc, HFCUSB_CIRM, 8);
1214 /* aux = output, reset off */
1215 write_usb(hfc, HFCUSB_CIRM, 0x10);
1216
1217 /* set USB_SIZE to match the wMaxPacketSize for INT or BULK transfers */
1218 write_usb(hfc, HFCUSB_USB_SIZE,
1219 (hfc->packet_size / 8) | ((hfc->packet_size / 8) << 4));
1220
1221 /* set USB_SIZE_I to match the wMaxPacketSize for ISO transfers */
1222 write_usb(hfc, HFCUSB_USB_SIZE_I, hfc->iso_packet_size);
1223
1224 /* enable PCM/GCI master mode */
1225 write_usb(hfc, HFCUSB_MST_MODE1, 0); /* set default values */
1226 write_usb(hfc, HFCUSB_MST_MODE0, 1); /* enable master mode */
1227
1228 /* init the fifos */
1229 write_usb(hfc, HFCUSB_F_THRES,
1230 (HFCUSB_TX_THRESHOLD /
1231 8) | ((HFCUSB_RX_THRESHOLD / 8) << 4));
1232
1233 fifo = hfc->fifos;
1234 for (i = 0; i < HFCUSB_NUM_FIFOS; i++) {
1235 write_usb(hfc, HFCUSB_FIFO, i); /* select the desired fifo */
1236 fifo[i].skbuff = NULL; /* init buffer pointer */
1237 fifo[i].max_size =
1238 (i <= HFCUSB_B2_RX) ? MAX_BCH_SIZE : MAX_DFRAME_LEN;
1239 fifo[i].last_urblen = 0;
1240 /* set 2 bit for D- & E-channel */
1241 write_usb(hfc, HFCUSB_HDLC_PAR,
1242 ((i <= HFCUSB_B2_RX) ? 0 : 2));
1243 /* rx hdlc, enable IFF for D-channel */
1244 write_usb(hfc, HFCUSB_CON_HDLC,
1245 ((i == HFCUSB_D_TX) ? 0x09 : 0x08));
1246 write_usb(hfc, HFCUSB_INC_RES_F, 2); /* reset the fifo */
1247 }
1248
1249 write_usb(hfc, HFCUSB_CLKDEL, 0x0f); /* clock delay value */
1250 write_usb(hfc, HFCUSB_STATES, 3 | 0x10); /* set deactivated mode */
1251 write_usb(hfc, HFCUSB_STATES, 3); /* enable state machine */
1252
1253 write_usb(hfc, HFCUSB_SCTRL_R, 0); /* disable both B receivers */
1254 write_usb(hfc, HFCUSB_SCTRL, 0x40); /* disable B transmitters + capacitive mode */
1255
1256 /* set both B-channel to not connected */
1257 hfc->b_mode[0] = L1_MODE_NULL;
1258 hfc->b_mode[1] = L1_MODE_NULL;
1259
1260 hfc->l1_activated = false;
1261 hfc->disc_flag = false;
1262 hfc->led_state = 0;
1263 hfc->led_new_data = 0;
1264 hfc->old_led_state = 0;
1265
1266 /* init the t3 timer */
1267 init_timer(&hfc->t3_timer);
1268 hfc->t3_timer.data = (long) hfc;
1269 hfc->t3_timer.function = (void *) l1_timer_expire_t3;
1270
1271 /* init the t4 timer */
1272 init_timer(&hfc->t4_timer);
1273 hfc->t4_timer.data = (long) hfc;
1274 hfc->t4_timer.function = (void *) l1_timer_expire_t4;
1275
1276 /* init the background machinery for control requests */
1277 hfc->ctrl_read.bRequestType = 0xc0;
1278 hfc->ctrl_read.bRequest = 1;
1279 hfc->ctrl_read.wLength = cpu_to_le16(1);
1280 hfc->ctrl_write.bRequestType = 0x40;
1281 hfc->ctrl_write.bRequest = 0;
1282 hfc->ctrl_write.wLength = 0;
1283 usb_fill_control_urb(hfc->ctrl_urb,
1284 hfc->dev,
1285 hfc->ctrl_out_pipe,
1286 (u_char *) & hfc->ctrl_write,
1287 NULL, 0, ctrl_complete, hfc);
1288 /* Init All Fifos */
1289 for (i = 0; i < HFCUSB_NUM_FIFOS; i++) {
1290 hfc->fifos[i].iso[0].purb = NULL;
1291 hfc->fifos[i].iso[1].purb = NULL;
1292 hfc->fifos[i].active = 0;
1293 }
1294 /* register Modul to upper Hisax Layers */
1295 hfc->d_if.owner = THIS_MODULE;
1296 hfc->d_if.ifc.priv = &hfc->fifos[HFCUSB_D_TX];
1297 hfc->d_if.ifc.l2l1 = hfc_usb_l2l1;
1298 for (i = 0; i < 2; i++) {
1299 hfc->b_if[i].ifc.priv = &hfc->fifos[HFCUSB_B1_TX + i * 2];
1300 hfc->b_if[i].ifc.l2l1 = hfc_usb_l2l1;
1301 p_b_if[i] = &hfc->b_if[i];
1302 }
1303 /* default Prot: EURO ISDN, should be a module_param */
1304 hfc->protocol = 2;
1305 i = hisax_register(&hfc->d_if, p_b_if, "hfc_usb", hfc->protocol);
1306 if (i) {
1307 printk(KERN_INFO "HFC-S USB: hisax_register -> %d\n", i);
1308 return i;
1309 }
1310
1311 #ifdef CONFIG_HISAX_DEBUG
1312 hfc_debug = debug;
1313 #endif
1314
1315 for (i = 0; i < 4; i++)
1316 hfc->fifos[i].hif = &p_b_if[i / 2]->ifc;
1317 for (i = 4; i < 8; i++)
1318 hfc->fifos[i].hif = &hfc->d_if.ifc;
1319
1320 /* 3 (+1) INT IN + 3 ISO OUT */
1321 if (hfc->cfg_used == CNF_3INT3ISO || hfc->cfg_used == CNF_4INT3ISO) {
1322 start_int_fifo(hfc->fifos + HFCUSB_D_RX);
1323 if (hfc->fifos[HFCUSB_PCM_RX].pipe)
1324 start_int_fifo(hfc->fifos + HFCUSB_PCM_RX);
1325 start_int_fifo(hfc->fifos + HFCUSB_B1_RX);
1326 start_int_fifo(hfc->fifos + HFCUSB_B2_RX);
1327 }
1328 /* 3 (+1) ISO IN + 3 ISO OUT */
1329 if (hfc->cfg_used == CNF_3ISO3ISO || hfc->cfg_used == CNF_4ISO3ISO) {
1330 start_isoc_chain(hfc->fifos + HFCUSB_D_RX, ISOC_PACKETS_D,
1331 rx_iso_complete, 16);
1332 if (hfc->fifos[HFCUSB_PCM_RX].pipe)
1333 start_isoc_chain(hfc->fifos + HFCUSB_PCM_RX,
1334 ISOC_PACKETS_D, rx_iso_complete,
1335 16);
1336 start_isoc_chain(hfc->fifos + HFCUSB_B1_RX, ISOC_PACKETS_B,
1337 rx_iso_complete, 16);
1338 start_isoc_chain(hfc->fifos + HFCUSB_B2_RX, ISOC_PACKETS_B,
1339 rx_iso_complete, 16);
1340 }
1341
1342 start_isoc_chain(hfc->fifos + HFCUSB_D_TX, ISOC_PACKETS_D,
1343 tx_iso_complete, 1);
1344 start_isoc_chain(hfc->fifos + HFCUSB_B1_TX, ISOC_PACKETS_B,
1345 tx_iso_complete, 1);
1346 start_isoc_chain(hfc->fifos + HFCUSB_B2_TX, ISOC_PACKETS_B,
1347 tx_iso_complete, 1);
1348
1349 handle_led(hfc, LED_POWER_ON);
1350
1351 return (0);
1352 } /* usb_init */
1353
1354 /*************************************************/
1355 /* function called to probe a new plugged device */
1356 /*************************************************/
1357 static int
1358 hfc_usb_probe(struct usb_interface *intf, const struct usb_device_id *id)
1359 {
1360 struct usb_device *dev = interface_to_usbdev(intf);
1361 hfcusb_data *context;
1362 struct usb_host_interface *iface = intf->cur_altsetting;
1363 struct usb_host_interface *iface_used = NULL;
1364 struct usb_host_endpoint *ep;
1365 int ifnum = iface->desc.bInterfaceNumber;
1366 int i, idx, alt_idx, probe_alt_setting, vend_idx, cfg_used, *vcf,
1367 attr, cfg_found, cidx, ep_addr;
1368 int cmptbl[16], small_match, iso_packet_size, packet_size,
1369 alt_used = 0;
1370 hfcsusb_vdata *driver_info;
1371
1372 vend_idx = 0xffff;
1373 for (i = 0; hfcusb_idtab[i].idVendor; i++) {
1374 if ((le16_to_cpu(dev->descriptor.idVendor) == hfcusb_idtab[i].idVendor)
1375 && (le16_to_cpu(dev->descriptor.idProduct) == hfcusb_idtab[i].idProduct)) {
1376 vend_idx = i;
1377 continue;
1378 }
1379 }
1380
1381 #ifdef CONFIG_HISAX_DEBUG
1382 DBG(USB_DBG,
1383 "HFC-USB: probing interface(%d) actalt(%d) minor(%d)\n", ifnum,
1384 iface->desc.bAlternateSetting, intf->minor);
1385 #endif
1386 printk(KERN_INFO
1387 "HFC-S USB: probing interface(%d) actalt(%d) minor(%d)\n",
1388 ifnum, iface->desc.bAlternateSetting, intf->minor);
1389
1390 if (vend_idx != 0xffff) {
1391 /* if vendor and product ID is OK, start probing alternate settings */
1392 alt_idx = 0;
1393 small_match = 0xffff;
1394
1395 /* default settings */
1396 iso_packet_size = 16;
1397 packet_size = 64;
1398
1399 while (alt_idx < intf->num_altsetting) {
1400 iface = intf->altsetting + alt_idx;
1401 probe_alt_setting = iface->desc.bAlternateSetting;
1402 cfg_used = 0;
1403
1404 /* check for config EOL element */
1405 while (validconf[cfg_used][0]) {
1406 cfg_found = true;
1407 vcf = validconf[cfg_used];
1408 /* first endpoint descriptor */
1409 ep = iface->endpoint;
1410 #ifdef CONFIG_HISAX_DEBUG
1411 DBG(USB_DBG,
1412 "HFC-S USB: (if=%d alt=%d cfg_used=%d)\n",
1413 ifnum, probe_alt_setting, cfg_used);
1414 #endif
1415 memcpy(cmptbl, vcf, 16 * sizeof(int));
1416
1417 /* check for all endpoints in this alternate setting */
1418 for (i = 0; i < iface->desc.bNumEndpoints;
1419 i++) {
1420 ep_addr =
1421 ep->desc.bEndpointAddress;
1422 /* get endpoint base */
1423 idx = ((ep_addr & 0x7f) - 1) * 2;
1424 if (ep_addr & 0x80)
1425 idx++;
1426 attr = ep->desc.bmAttributes;
1427 if (cmptbl[idx] == EP_NUL) {
1428 cfg_found = false;
1429 }
1430 if (attr == USB_ENDPOINT_XFER_INT
1431 && cmptbl[idx] == EP_INT)
1432 cmptbl[idx] = EP_NUL;
1433 if (attr == USB_ENDPOINT_XFER_BULK
1434 && cmptbl[idx] == EP_BLK)
1435 cmptbl[idx] = EP_NUL;
1436 if (attr == USB_ENDPOINT_XFER_ISOC
1437 && cmptbl[idx] == EP_ISO)
1438 cmptbl[idx] = EP_NUL;
1439
1440 /* check if all INT endpoints match minimum interval */
1441 if (attr == USB_ENDPOINT_XFER_INT
1442 && ep->desc.bInterval <
1443 vcf[17]) {
1444 #ifdef CONFIG_HISAX_DEBUG
1445 if (cfg_found)
1446 DBG(USB_DBG,
1447 "HFC-S USB: Interrupt Endpoint interval < %d found - skipping config",
1448 vcf[17]);
1449 #endif
1450 cfg_found = false;
1451 }
1452 ep++;
1453 }
1454 for (i = 0; i < 16; i++) {
1455 /* all entries must be EP_NOP or EP_NUL for a valid config */
1456 if (cmptbl[i] != EP_NOP
1457 && cmptbl[i] != EP_NUL)
1458 cfg_found = false;
1459 }
1460 if (cfg_found) {
1461 if (cfg_used < small_match) {
1462 small_match = cfg_used;
1463 alt_used =
1464 probe_alt_setting;
1465 iface_used = iface;
1466 }
1467 #ifdef CONFIG_HISAX_DEBUG
1468 DBG(USB_DBG,
1469 "HFC-USB: small_match=%x %x\n",
1470 small_match, alt_used);
1471 #endif
1472 }
1473 cfg_used++;
1474 }
1475 alt_idx++;
1476 } /* (alt_idx < intf->num_altsetting) */
1477
1478 /* found a valid USB Ta Endpint config */
1479 if (small_match != 0xffff) {
1480 iface = iface_used;
1481 if (!
1482 (context =
1483 kzalloc(sizeof(hfcusb_data), GFP_KERNEL)))
1484 return (-ENOMEM); /* got no mem */
1485
1486 ep = iface->endpoint;
1487 vcf = validconf[small_match];
1488
1489 for (i = 0; i < iface->desc.bNumEndpoints; i++) {
1490 ep_addr = ep->desc.bEndpointAddress;
1491 /* get endpoint base */
1492 idx = ((ep_addr & 0x7f) - 1) * 2;
1493 if (ep_addr & 0x80)
1494 idx++;
1495 cidx = idx & 7;
1496 attr = ep->desc.bmAttributes;
1497
1498 /* init Endpoints */
1499 if (vcf[idx] != EP_NOP
1500 && vcf[idx] != EP_NUL) {
1501 switch (attr) {
1502 case USB_ENDPOINT_XFER_INT:
1503 context->
1504 fifos[cidx].
1505 pipe =
1506 usb_rcvintpipe
1507 (dev,
1508 ep->desc.
1509 bEndpointAddress);
1510 context->
1511 fifos[cidx].
1512 usb_transfer_mode
1513 = USB_INT;
1514 packet_size =
1515 le16_to_cpu(ep->desc.wMaxPacketSize);
1516 break;
1517 case USB_ENDPOINT_XFER_BULK:
1518 if (ep_addr & 0x80)
1519 context->
1520 fifos
1521 [cidx].
1522 pipe =
1523 usb_rcvbulkpipe
1524 (dev,
1525 ep->
1526 desc.
1527 bEndpointAddress);
1528 else
1529 context->
1530 fifos
1531 [cidx].
1532 pipe =
1533 usb_sndbulkpipe
1534 (dev,
1535 ep->
1536 desc.
1537 bEndpointAddress);
1538 context->
1539 fifos[cidx].
1540 usb_transfer_mode
1541 = USB_BULK;
1542 packet_size =
1543 le16_to_cpu(ep->desc.wMaxPacketSize);
1544 break;
1545 case USB_ENDPOINT_XFER_ISOC:
1546 if (ep_addr & 0x80)
1547 context->
1548 fifos
1549 [cidx].
1550 pipe =
1551 usb_rcvisocpipe
1552 (dev,
1553 ep->
1554 desc.
1555 bEndpointAddress);
1556 else
1557 context->
1558 fifos
1559 [cidx].
1560 pipe =
1561 usb_sndisocpipe
1562 (dev,
1563 ep->
1564 desc.
1565 bEndpointAddress);
1566 context->
1567 fifos[cidx].
1568 usb_transfer_mode
1569 = USB_ISOC;
1570 iso_packet_size =
1571 le16_to_cpu(ep->desc.wMaxPacketSize);
1572 break;
1573 default:
1574 context->
1575 fifos[cidx].
1576 pipe = 0;
1577 } /* switch attribute */
1578
1579 if (context->fifos[cidx].pipe) {
1580 context->fifos[cidx].
1581 fifonum = cidx;
1582 context->fifos[cidx].hfc =
1583 context;
1584 context->fifos[cidx].usb_packet_maxlen =
1585 le16_to_cpu(ep->desc.wMaxPacketSize);
1586 context->fifos[cidx].
1587 intervall =
1588 ep->desc.bInterval;
1589 context->fifos[cidx].
1590 skbuff = NULL;
1591 }
1592 }
1593 ep++;
1594 }
1595 context->dev = dev; /* save device */
1596 context->if_used = ifnum; /* save used interface */
1597 context->alt_used = alt_used; /* and alternate config */
1598 context->ctrl_paksize = dev->descriptor.bMaxPacketSize0; /* control size */
1599 context->cfg_used = vcf[16]; /* store used config */
1600 context->vend_idx = vend_idx; /* store found vendor */
1601 context->packet_size = packet_size;
1602 context->iso_packet_size = iso_packet_size;
1603
1604 /* create the control pipes needed for register access */
1605 context->ctrl_in_pipe =
1606 usb_rcvctrlpipe(context->dev, 0);
1607 context->ctrl_out_pipe =
1608 usb_sndctrlpipe(context->dev, 0);
1609 context->ctrl_urb = usb_alloc_urb(0, GFP_KERNEL);
1610
1611 driver_info =
1612 (hfcsusb_vdata *) hfcusb_idtab[vend_idx].
1613 driver_info;
1614 printk(KERN_INFO "HFC-S USB: detected \"%s\"\n",
1615 driver_info->vend_name);
1616 #ifdef CONFIG_HISAX_DEBUG
1617 DBG(USB_DBG,
1618 "HFC-S USB: Endpoint-Config: %s (if=%d alt=%d)\n",
1619 conf_str[small_match], context->if_used,
1620 context->alt_used);
1621 printk(KERN_INFO
1622 "HFC-S USB: E-channel (\"ECHO:\") logging ");
1623 if (validconf[small_match][18])
1624 printk(" possible\n");
1625 else
1626 printk("NOT possible\n");
1627 #endif
1628 /* init the chip and register the driver */
1629 if (usb_init(context)) {
1630 usb_kill_urb(context->ctrl_urb);
1631 usb_free_urb(context->ctrl_urb);
1632 context->ctrl_urb = NULL;
1633 kfree(context);
1634 return (-EIO);
1635 }
1636 usb_set_intfdata(intf, context);
1637 return (0);
1638 }
1639 } else {
1640 printk(KERN_INFO
1641 "HFC-S USB: no valid vendor found in USB descriptor\n");
1642 }
1643 return (-EIO);
1644 }
1645
1646 /****************************************************/
1647 /* function called when an active device is removed */
1648 /****************************************************/
1649 static void
1650 hfc_usb_disconnect(struct usb_interface
1651 *intf)
1652 {
1653 hfcusb_data *context = usb_get_intfdata(intf);
1654 int i;
1655 printk(KERN_INFO "HFC-S USB: device disconnect\n");
1656 context->disc_flag = true;
1657 usb_set_intfdata(intf, NULL);
1658 if (!context)
1659 return;
1660 if (timer_pending(&context->t3_timer))
1661 del_timer(&context->t3_timer);
1662 if (timer_pending(&context->t4_timer))
1663 del_timer(&context->t4_timer);
1664 /* tell all fifos to terminate */
1665 for (i = 0; i < HFCUSB_NUM_FIFOS; i++) {
1666 if (context->fifos[i].usb_transfer_mode == USB_ISOC) {
1667 if (context->fifos[i].active > 0) {
1668 stop_isoc_chain(&context->fifos[i]);
1669 #ifdef CONFIG_HISAX_DEBUG
1670 DBG(USB_DBG,
1671 "HFC-S USB: hfc_usb_disconnect: stopping ISOC chain Fifo no %i",
1672 i);
1673 #endif
1674 }
1675 } else {
1676 if (context->fifos[i].active > 0) {
1677 context->fifos[i].active = 0;
1678 #ifdef CONFIG_HISAX_DEBUG
1679 DBG(USB_DBG,
1680 "HFC-S USB: hfc_usb_disconnect: unlinking URB for Fifo no %i",
1681 i);
1682 #endif
1683 }
1684 usb_kill_urb(context->fifos[i].urb);
1685 usb_free_urb(context->fifos[i].urb);
1686 context->fifos[i].urb = NULL;
1687 }
1688 context->fifos[i].active = 0;
1689 }
1690 usb_kill_urb(context->ctrl_urb);
1691 usb_free_urb(context->ctrl_urb);
1692 context->ctrl_urb = NULL;
1693 hisax_unregister(&context->d_if);
1694 kfree(context); /* free our structure again */
1695 } /* hfc_usb_disconnect */
1696
1697 /************************************/
1698 /* our driver information structure */
1699 /************************************/
1700 static struct usb_driver hfc_drv = {
1701 .name = "hfc_usb",
1702 .id_table = hfcusb_idtab,
1703 .probe = hfc_usb_probe,
1704 .disconnect = hfc_usb_disconnect,
1705 };
1706 static void __exit
1707 hfc_usb_exit(void)
1708 {
1709 #ifdef CONFIG_HISAX_DEBUG
1710 DBG(USB_DBG, "HFC-S USB: calling \"hfc_usb_exit\" ...");
1711 #endif
1712 usb_deregister(&hfc_drv); /* release our driver */
1713 printk(KERN_INFO "HFC-S USB: module removed\n");
1714 }
1715
1716 static int __init
1717 hfc_usb_init(void)
1718 {
1719 #ifndef CONFIG_HISAX_DEBUG
1720 unsigned int debug = -1;
1721 #endif
1722 char revstr[30], datestr[30], dummy[30];
1723 sscanf(hfcusb_revision,
1724 "%s %s $ %s %s %s $ ", dummy, revstr,
1725 dummy, datestr, dummy);
1726 printk(KERN_INFO
1727 "HFC-S USB: driver module revision %s date %s loaded, (debug=%i)\n",
1728 revstr, datestr, debug);
1729 if (usb_register(&hfc_drv)) {
1730 printk(KERN_INFO
1731 "HFC-S USB: Unable to register HFC-S USB module at usb stack\n");
1732 return (-1); /* unable to register */
1733 }
1734 return (0);
1735 }
1736
1737 module_init(hfc_usb_init);
1738 module_exit(hfc_usb_exit);
1739 MODULE_AUTHOR(DRIVER_AUTHOR);
1740 MODULE_DESCRIPTION(DRIVER_DESC);
1741 MODULE_LICENSE("GPL");
1742 MODULE_DEVICE_TABLE(usb, hfcusb_idtab);
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