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[CONNECTOR]: Initialize subsystem earlier.
[linux-2.6/verdex.git] / drivers / isdn / hisax / hfc_usb.c
blob262c4412741904bb5dd16ac1252966474ada9a1d
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/config.h>
36 #include <linux/init.h>
37 #include <linux/module.h>
38 #include <linux/kernel_stat.h>
39 #include <linux/usb.h>
40 #include <linux/kernel.h>
41 #include <linux/smp_lock.h>
42 #include <linux/sched.h>
43 #include "hisax.h"
44 #include "hisax_if.h"
45 #include "hfc_usb.h"
46
47 static const char *hfcusb_revision =
48 "$Revision: 2.3.2.13 $ $Date: 2006/02/17 17:17:22 $ ";
49
50 /* Hisax debug support
51 * use "modprobe debug=x" where x is bitfield of USB_DBG & ISDN_DBG
52 */
53 #ifdef CONFIG_HISAX_DEBUG
54 #include <linux/moduleparam.h>
55 #define __debug_variable hfc_debug
56 #include "hisax_debug.h"
57 static u_int debug;
58 module_param(debug, uint, 0);
59 static int hfc_debug;
60 #endif
61
62 /* private vendor specific data */
63 typedef struct {
64 __u8 led_scheme; // led display scheme
65 signed short led_bits[8]; // array of 8 possible LED bitmask settings
66 char *vend_name; // device name
67 } hfcsusb_vdata;
68
69 /****************************************/
70 /* data defining the devices to be used */
71 /****************************************/
72 static struct usb_device_id hfcusb_idtab[] = {
73 {
74 USB_DEVICE(0x0959, 0x2bd0),
75 .driver_info = (unsigned long) &((hfcsusb_vdata)
76 {LED_OFF, {4, 0, 2, 1},
77 "ISDN USB TA (Cologne Chip HFC-S USB based)"}),
78 },
79 {
80 USB_DEVICE(0x0675, 0x1688),
81 .driver_info = (unsigned long) &((hfcsusb_vdata)
82 {LED_SCHEME1, {1, 2, 0, 0},
83 "DrayTek miniVigor 128 USB ISDN TA"}),
84 },
85 {
86 USB_DEVICE(0x07b0, 0x0007),
87 .driver_info = (unsigned long) &((hfcsusb_vdata)
88 {LED_SCHEME1, {0x80, -64, -32, -16},
89 "Billion tiny USB ISDN TA 128"}),
90 },
91 {
92 USB_DEVICE(0x0742, 0x2008),
93 .driver_info = (unsigned long) &((hfcsusb_vdata)
94 {LED_SCHEME1, {4, 0, 2, 1},
95 "Stollmann USB TA"}),
96 },
97 {
98 USB_DEVICE(0x0742, 0x2009),
99 .driver_info = (unsigned long) &((hfcsusb_vdata)
100 {LED_SCHEME1, {4, 0, 2, 1},
101 "Aceex USB ISDN TA"}),
102 },
103 {
104 USB_DEVICE(0x0742, 0x200A),
105 .driver_info = (unsigned long) &((hfcsusb_vdata)
106 {LED_SCHEME1, {4, 0, 2, 1},
107 "OEM USB ISDN TA"}),
108 },
109 {
110 USB_DEVICE(0x08e3, 0x0301),
111 .driver_info = (unsigned long) &((hfcsusb_vdata)
112 {LED_SCHEME1, {2, 0, 1, 4},
113 "Olitec USB RNIS"}),
114 },
115 {
116 USB_DEVICE(0x07fa, 0x0846),
117 .driver_info = (unsigned long) &((hfcsusb_vdata)
118 {LED_SCHEME1, {0x80, -64, -32, -16},
119 "Bewan Modem RNIS USB"}),
120 },
121 {
122 USB_DEVICE(0x07fa, 0x0847),
123 .driver_info = (unsigned long) &((hfcsusb_vdata)
124 {LED_SCHEME1, {0x80, -64, -32, -16},
125 "Djinn Numeris USB"}),
126 },
127 {
128 USB_DEVICE(0x07b0, 0x0006),
129 .driver_info = (unsigned long) &((hfcsusb_vdata)
130 {LED_SCHEME1, {0x80, -64, -32, -16},
131 "Twister ISDN TA"}),
132 },
133 { }
134 };
135
136 /***************************************************************/
137 /* structure defining input+output fifos (interrupt/bulk mode) */
138 /***************************************************************/
139 struct usb_fifo; /* forward definition */
140 typedef struct iso_urb_struct {
141 struct urb *purb;
142 __u8 buffer[ISO_BUFFER_SIZE]; /* buffer incoming/outgoing data */
143 struct usb_fifo *owner_fifo; /* pointer to owner fifo */
144 } iso_urb_struct;
145
146
147 struct hfcusb_data; /* forward definition */
148 typedef struct usb_fifo {
149 int fifonum; /* fifo index attached to this structure */
150 int active; /* fifo is currently active */
151 struct hfcusb_data *hfc; /* pointer to main structure */
152 int pipe; /* address of endpoint */
153 __u8 usb_packet_maxlen; /* maximum length for usb transfer */
154 unsigned int max_size; /* maximum size of receive/send packet */
155 __u8 intervall; /* interrupt interval */
156 struct sk_buff *skbuff; /* actual used buffer */
157 struct urb *urb; /* transfer structure for usb routines */
158 __u8 buffer[128]; /* buffer incoming/outgoing data */
159 int bit_line; /* how much bits are in the fifo? */
160
161 volatile __u8 usb_transfer_mode; /* switched between ISO and INT */
162 iso_urb_struct iso[2]; /* need two urbs to have one always for pending */
163 struct hisax_if *hif; /* hisax interface */
164 int delete_flg; /* only delete skbuff once */
165 int last_urblen; /* remember length of last packet */
166
167 } usb_fifo;
168
169 /*********************************************/
170 /* structure holding all data for one device */
171 /*********************************************/
172 typedef struct hfcusb_data {
173 /* HiSax Interface for loadable Layer1 drivers */
174 struct hisax_d_if d_if; /* see hisax_if.h */
175 struct hisax_b_if b_if[2]; /* see hisax_if.h */
176 int protocol;
177
178 struct usb_device *dev; /* our device */
179 int if_used; /* used interface number */
180 int alt_used; /* used alternate config */
181 int ctrl_paksize; /* control pipe packet size */
182 int ctrl_in_pipe, ctrl_out_pipe; /* handles for control pipe */
183 int cfg_used; /* configuration index used */
184 int vend_idx; /* vendor found */
185 int b_mode[2]; /* B-channel mode */
186 int l1_activated; /* layer 1 activated */
187 int disc_flag; /* TRUE if device was disonnected to avoid some USB actions */
188 int packet_size, iso_packet_size;
189
190 /* control pipe background handling */
191 ctrl_buft ctrl_buff[HFC_CTRL_BUFSIZE]; /* buffer holding queued data */
192 volatile int ctrl_in_idx, ctrl_out_idx, ctrl_cnt; /* input/output pointer + count */
193 struct urb *ctrl_urb; /* transfer structure for control channel */
194
195 struct usb_ctrlrequest ctrl_write; /* buffer for control write request */
196 struct usb_ctrlrequest ctrl_read; /* same for read request */
197
198 __u8 old_led_state, led_state, led_new_data, led_b_active;
199
200 volatile __u8 threshold_mask; /* threshold actually reported */
201 volatile __u8 bch_enables; /* or mask for sctrl_r and sctrl register values */
202
203 usb_fifo fifos[HFCUSB_NUM_FIFOS]; /* structure holding all fifo data */
204
205 volatile __u8 l1_state; /* actual l1 state */
206 struct timer_list t3_timer; /* timer 3 for activation/deactivation */
207 struct timer_list t4_timer; /* timer 4 for activation/deactivation */
208 } hfcusb_data;
209
210
211 static void collect_rx_frame(usb_fifo * fifo, __u8 * data, int len,
212 int finish);
213
214
215 static inline const char *
216 symbolic(struct hfcusb_symbolic_list list[], const int num)
217 {
218 int i;
219 for (i = 0; list[i].name != NULL; i++)
220 if (list[i].num == num)
221 return (list[i].name);
222 return "<unknown ERROR>";
223 }
224
225
226 /******************************************************/
227 /* start next background transfer for control channel */
228 /******************************************************/
229 static void
230 ctrl_start_transfer(hfcusb_data * hfc)
231 {
232 if (hfc->ctrl_cnt) {
233 hfc->ctrl_urb->pipe = hfc->ctrl_out_pipe;
234 hfc->ctrl_urb->setup_packet = (u_char *) & hfc->ctrl_write;
235 hfc->ctrl_urb->transfer_buffer = NULL;
236 hfc->ctrl_urb->transfer_buffer_length = 0;
237 hfc->ctrl_write.wIndex =
238 cpu_to_le16(hfc->ctrl_buff[hfc->ctrl_out_idx].hfc_reg);
239 hfc->ctrl_write.wValue =
240 cpu_to_le16(hfc->ctrl_buff[hfc->ctrl_out_idx].reg_val);
241
242 usb_submit_urb(hfc->ctrl_urb, GFP_ATOMIC); /* start transfer */
243 }
244 } /* ctrl_start_transfer */
245
246 /************************************/
247 /* queue a control transfer request */
248 /* return 0 on success. */
249 /************************************/
250 static int
251 queue_control_request(hfcusb_data * hfc, __u8 reg, __u8 val, int action)
252 {
253 ctrl_buft *buf;
254
255 if (hfc->ctrl_cnt >= HFC_CTRL_BUFSIZE)
256 return (1); /* no space left */
257 buf = &hfc->ctrl_buff[hfc->ctrl_in_idx]; /* pointer to new index */
258 buf->hfc_reg = reg;
259 buf->reg_val = val;
260 buf->action = action;
261 if (++hfc->ctrl_in_idx >= HFC_CTRL_BUFSIZE)
262 hfc->ctrl_in_idx = 0; /* pointer wrap */
263 if (++hfc->ctrl_cnt == 1)
264 ctrl_start_transfer(hfc);
265 return (0);
266 } /* queue_control_request */
267
268 static int
269 control_action_handler(hfcusb_data * hfc, int reg, int val, int action)
270 {
271 if (!action)
272 return (1); /* no action defined */
273 return (0);
274 }
275
276 /***************************************************************/
277 /* control completion routine handling background control cmds */
278 /***************************************************************/
279 static void
280 ctrl_complete(struct urb *urb, struct pt_regs *regs)
281 {
282 hfcusb_data *hfc = (hfcusb_data *) urb->context;
283 ctrl_buft *buf;
284
285 urb->dev = hfc->dev;
286 if (hfc->ctrl_cnt) {
287 buf = &hfc->ctrl_buff[hfc->ctrl_out_idx];
288 control_action_handler(hfc, buf->hfc_reg, buf->reg_val,
289 buf->action);
290
291 hfc->ctrl_cnt--; /* decrement actual count */
292 if (++hfc->ctrl_out_idx >= HFC_CTRL_BUFSIZE)
293 hfc->ctrl_out_idx = 0; /* pointer wrap */
294
295 ctrl_start_transfer(hfc); /* start next transfer */
296 }
297 } /* ctrl_complete */
298
299 /***************************************************/
300 /* write led data to auxport & invert if necessary */
301 /***************************************************/
302 static void
303 write_led(hfcusb_data * hfc, __u8 led_state)
304 {
305 if (led_state != hfc->old_led_state) {
306 hfc->old_led_state = led_state;
307 queue_control_request(hfc, HFCUSB_P_DATA, led_state, 1);
308 }
309 }
310
311 /**************************/
312 /* handle LED bits */
313 /**************************/
314 static void
315 set_led_bit(hfcusb_data * hfc, signed short led_bits, int unset)
316 {
317 if (unset) {
318 if (led_bits < 0)
319 hfc->led_state |= abs(led_bits);
320 else
321 hfc->led_state &= ~led_bits;
322 } else {
323 if (led_bits < 0)
324 hfc->led_state &= ~abs(led_bits);
325 else
326 hfc->led_state |= led_bits;
327 }
328 }
329
330 /**************************/
331 /* handle LED requests */
332 /**************************/
333 static void
334 handle_led(hfcusb_data * hfc, int event)
335 {
336 hfcsusb_vdata *driver_info =
337 (hfcsusb_vdata *) hfcusb_idtab[hfc->vend_idx].driver_info;
338
339 /* if no scheme -> no LED action */
340 if (driver_info->led_scheme == LED_OFF)
341 return;
342
343 switch (event) {
344 case LED_POWER_ON:
345 set_led_bit(hfc, driver_info->led_bits[0],
346 0);
347 set_led_bit(hfc, driver_info->led_bits[1],
348 1);
349 set_led_bit(hfc, driver_info->led_bits[2],
350 1);
351 set_led_bit(hfc, driver_info->led_bits[3],
352 1);
353 break;
354 case LED_POWER_OFF: /* no Power off handling */
355 break;
356 case LED_S0_ON:
357 set_led_bit(hfc, driver_info->led_bits[1],
358 0);
359 break;
360 case LED_S0_OFF:
361 set_led_bit(hfc, driver_info->led_bits[1],
362 1);
363 break;
364 case LED_B1_ON:
365 set_led_bit(hfc, driver_info->led_bits[2],
366 0);
367 break;
368 case LED_B1_OFF:
369 set_led_bit(hfc, driver_info->led_bits[2],
370 1);
371 break;
372 case LED_B2_ON:
373 set_led_bit(hfc, driver_info->led_bits[3],
374 0);
375 break;
376 case LED_B2_OFF:
377 set_led_bit(hfc, driver_info->led_bits[3],
378 1);
379 break;
380 }
381 write_led(hfc, hfc->led_state);
382 }
383
384 /********************************/
385 /* called when timer t3 expires */
386 /********************************/
387 static void
388 l1_timer_expire_t3(hfcusb_data * hfc)
389 {
390 hfc->d_if.ifc.l1l2(&hfc->d_if.ifc, PH_DEACTIVATE | INDICATION,
391 NULL);
392 #ifdef CONFIG_HISAX_DEBUG
393 DBG(ISDN_DBG,
394 "HFC-S USB: PH_DEACTIVATE | INDICATION sent (T3 expire)");
395 #endif
396 hfc->l1_activated = FALSE;
397 handle_led(hfc, LED_S0_OFF);
398 /* deactivate : */
399 queue_control_request(hfc, HFCUSB_STATES, 0x10, 1);
400 queue_control_request(hfc, HFCUSB_STATES, 3, 1);
401 }
402
403 /********************************/
404 /* called when timer t4 expires */
405 /********************************/
406 static void
407 l1_timer_expire_t4(hfcusb_data * hfc)
408 {
409 hfc->d_if.ifc.l1l2(&hfc->d_if.ifc, PH_DEACTIVATE | INDICATION,
410 NULL);
411 #ifdef CONFIG_HISAX_DEBUG
412 DBG(ISDN_DBG,
413 "HFC-S USB: PH_DEACTIVATE | INDICATION sent (T4 expire)");
414 #endif
415 hfc->l1_activated = FALSE;
416 handle_led(hfc, LED_S0_OFF);
417 }
418
419 /*****************************/
420 /* handle S0 state changes */
421 /*****************************/
422 static void
423 state_handler(hfcusb_data * hfc, __u8 state)
424 {
425 __u8 old_state;
426
427 old_state = hfc->l1_state;
428 if (state == old_state || state < 1 || state > 8)
429 return;
430
431 #ifdef CONFIG_HISAX_DEBUG
432 DBG(ISDN_DBG, "HFC-S USB: new S0 state:%d old_state:%d", state,
433 old_state);
434 #endif
435 if (state < 4 || state == 7 || state == 8) {
436 if (timer_pending(&hfc->t3_timer))
437 del_timer(&hfc->t3_timer);
438 #ifdef CONFIG_HISAX_DEBUG
439 DBG(ISDN_DBG, "HFC-S USB: T3 deactivated");
440 #endif
441 }
442 if (state >= 7) {
443 if (timer_pending(&hfc->t4_timer))
444 del_timer(&hfc->t4_timer);
445 #ifdef CONFIG_HISAX_DEBUG
446 DBG(ISDN_DBG, "HFC-S USB: T4 deactivated");
447 #endif
448 }
449
450 if (state == 7 && !hfc->l1_activated) {
451 hfc->d_if.ifc.l1l2(&hfc->d_if.ifc,
452 PH_ACTIVATE | INDICATION, NULL);
453 #ifdef CONFIG_HISAX_DEBUG
454 DBG(ISDN_DBG, "HFC-S USB: PH_ACTIVATE | INDICATION sent");
455 #endif
456 hfc->l1_activated = TRUE;
457 handle_led(hfc, LED_S0_ON);
458 } else if (state <= 3 /* && activated */ ) {
459 if (old_state == 7 || old_state == 8) {
460 #ifdef CONFIG_HISAX_DEBUG
461 DBG(ISDN_DBG, "HFC-S USB: T4 activated");
462 #endif
463 if (!timer_pending(&hfc->t4_timer)) {
464 hfc->t4_timer.expires =
465 jiffies + (HFC_TIMER_T4 * HZ) / 1000;
466 add_timer(&hfc->t4_timer);
467 }
468 } else {
469 hfc->d_if.ifc.l1l2(&hfc->d_if.ifc,
470 PH_DEACTIVATE | INDICATION,
471 NULL);
472 #ifdef CONFIG_HISAX_DEBUG
473 DBG(ISDN_DBG,
474 "HFC-S USB: PH_DEACTIVATE | INDICATION sent");
475 #endif
476 hfc->l1_activated = FALSE;
477 handle_led(hfc, LED_S0_OFF);
478 }
479 }
480 hfc->l1_state = state;
481 }
482
483 /* prepare iso urb */
484 static void
485 fill_isoc_urb(struct urb *urb, struct usb_device *dev, unsigned int pipe,
486 void *buf, int num_packets, int packet_size, int interval,
487 usb_complete_t complete, void *context)
488 {
489 int k;
490
491 spin_lock_init(&urb->lock);
492 urb->dev = dev;
493 urb->pipe = pipe;
494 urb->complete = complete;
495 urb->number_of_packets = num_packets;
496 urb->transfer_buffer_length = packet_size * num_packets;
497 urb->context = context;
498 urb->transfer_buffer = buf;
499 urb->transfer_flags = URB_ISO_ASAP;
500 urb->actual_length = 0;
501 urb->interval = interval;
502 for (k = 0; k < num_packets; k++) {
503 urb->iso_frame_desc[k].offset = packet_size * k;
504 urb->iso_frame_desc[k].length = packet_size;
505 urb->iso_frame_desc[k].actual_length = 0;
506 }
507 }
508
509 /* allocs urbs and start isoc transfer with two pending urbs to avoid
510 gaps in the transfer chain */
511 static int
512 start_isoc_chain(usb_fifo * fifo, int num_packets_per_urb,
513 usb_complete_t complete, int packet_size)
514 {
515 int i, k, errcode;
516
517 printk(KERN_INFO "HFC-S USB: starting ISO-chain for Fifo %i\n",
518 fifo->fifonum);
519
520 /* allocate Memory for Iso out Urbs */
521 for (i = 0; i < 2; i++) {
522 if (!(fifo->iso[i].purb)) {
523 fifo->iso[i].purb =
524 usb_alloc_urb(num_packets_per_urb, GFP_KERNEL);
525 if (!(fifo->iso[i].purb)) {
526 printk(KERN_INFO
527 "alloc urb for fifo %i failed!!!",
528 fifo->fifonum);
529 }
530 fifo->iso[i].owner_fifo = (struct usb_fifo *) fifo;
531
532 /* Init the first iso */
533 if (ISO_BUFFER_SIZE >=
534 (fifo->usb_packet_maxlen *
535 num_packets_per_urb)) {
536 fill_isoc_urb(fifo->iso[i].purb,
537 fifo->hfc->dev, fifo->pipe,
538 fifo->iso[i].buffer,
539 num_packets_per_urb,
540 fifo->usb_packet_maxlen,
541 fifo->intervall, complete,
542 &fifo->iso[i]);
543 memset(fifo->iso[i].buffer, 0,
544 sizeof(fifo->iso[i].buffer));
545 /* defining packet delimeters in fifo->buffer */
546 for (k = 0; k < num_packets_per_urb; k++) {
547 fifo->iso[i].purb->
548 iso_frame_desc[k].offset =
549 k * packet_size;
550 fifo->iso[i].purb->
551 iso_frame_desc[k].length =
552 packet_size;
553 }
554 } else {
555 printk(KERN_INFO
556 "HFC-S USB: ISO Buffer size to small!\n");
557 }
558 }
559 fifo->bit_line = BITLINE_INF;
560
561 errcode = usb_submit_urb(fifo->iso[i].purb, GFP_KERNEL);
562 fifo->active = (errcode >= 0) ? 1 : 0;
563 if (errcode < 0) {
564 printk(KERN_INFO "HFC-S USB: %s URB nr:%d\n",
565 symbolic(urb_errlist, errcode), i);
566 };
567 }
568 return (fifo->active);
569 }
570
571 /* stops running iso chain and frees their pending urbs */
572 static void
573 stop_isoc_chain(usb_fifo * fifo)
574 {
575 int i;
576
577 for (i = 0; i < 2; i++) {
578 if (fifo->iso[i].purb) {
579 #ifdef CONFIG_HISAX_DEBUG
580 DBG(USB_DBG,
581 "HFC-S USB: Stopping iso chain for fifo %i.%i",
582 fifo->fifonum, i);
583 #endif
584 usb_unlink_urb(fifo->iso[i].purb);
585 usb_free_urb(fifo->iso[i].purb);
586 fifo->iso[i].purb = NULL;
587 }
588 }
589 if (fifo->urb) {
590 usb_unlink_urb(fifo->urb);
591 usb_free_urb(fifo->urb);
592 fifo->urb = NULL;
593 }
594 fifo->active = 0;
595 }
596
597 /* defines how much ISO packets are handled in one URB */
598 static int iso_packets[8] =
599 { ISOC_PACKETS_B, ISOC_PACKETS_B, ISOC_PACKETS_B, ISOC_PACKETS_B,
600 ISOC_PACKETS_D, ISOC_PACKETS_D, ISOC_PACKETS_D, ISOC_PACKETS_D
601 };
602
603 /*****************************************************/
604 /* transmit completion routine for all ISO tx fifos */
605 /*****************************************************/
606 static void
607 tx_iso_complete(struct urb *urb, struct pt_regs *regs)
608 {
609 iso_urb_struct *context_iso_urb = (iso_urb_struct *) urb->context;
610 usb_fifo *fifo = context_iso_urb->owner_fifo;
611 hfcusb_data *hfc = fifo->hfc;
612 int k, tx_offset, num_isoc_packets, sink, len, current_len,
613 errcode;
614 int frame_complete, transp_mode, fifon, status;
615 __u8 threshbit;
616 __u8 threshtable[8] = { 1, 2, 4, 8, 0x10, 0x20, 0x40, 0x80 };
617
618 fifon = fifo->fifonum;
619 status = urb->status;
620
621 tx_offset = 0;
622
623 if (fifo->active && !status) {
624 transp_mode = 0;
625 if (fifon < 4 && hfc->b_mode[fifon / 2] == L1_MODE_TRANS)
626 transp_mode = TRUE;
627
628 /* is FifoFull-threshold set for our channel? */
629 threshbit = threshtable[fifon] & hfc->threshold_mask;
630 num_isoc_packets = iso_packets[fifon];
631
632 /* predict dataflow to avoid fifo overflow */
633 if (fifon >= HFCUSB_D_TX) {
634 sink = (threshbit) ? SINK_DMIN : SINK_DMAX;
635 } else {
636 sink = (threshbit) ? SINK_MIN : SINK_MAX;
637 }
638 fill_isoc_urb(urb, fifo->hfc->dev, fifo->pipe,
639 context_iso_urb->buffer, num_isoc_packets,
640 fifo->usb_packet_maxlen, fifo->intervall,
641 tx_iso_complete, urb->context);
642 memset(context_iso_urb->buffer, 0,
643 sizeof(context_iso_urb->buffer));
644 frame_complete = FALSE;
645 /* Generate next Iso Packets */
646 for (k = 0; k < num_isoc_packets; ++k) {
647 if (fifo->skbuff) {
648 len = fifo->skbuff->len;
649 /* we lower data margin every msec */
650 fifo->bit_line -= sink;
651 current_len = (0 - fifo->bit_line) / 8;
652 /* maximum 15 byte for every ISO packet makes our life easier */
653 if (current_len > 14)
654 current_len = 14;
655 current_len =
656 (len <=
657 current_len) ? len : current_len;
658 /* how much bit do we put on the line? */
659 fifo->bit_line += current_len * 8;
660
661 context_iso_urb->buffer[tx_offset] = 0;
662 if (current_len == len) {
663 if (!transp_mode) {
664 /* here frame completion */
665 context_iso_urb->
666 buffer[tx_offset] = 1;
667 /* add 2 byte flags and 16bit CRC at end of ISDN frame */
668 fifo->bit_line += 32;
669 }
670 frame_complete = TRUE;
671 }
672
673 memcpy(context_iso_urb->buffer +
674 tx_offset + 1, fifo->skbuff->data,
675 current_len);
676 skb_pull(fifo->skbuff, current_len);
677
678 /* define packet delimeters within the URB buffer */
679 urb->iso_frame_desc[k].offset = tx_offset;
680 urb->iso_frame_desc[k].length =
681 current_len + 1;
682
683 tx_offset += (current_len + 1);
684 } else {
685 urb->iso_frame_desc[k].offset =
686 tx_offset++;
687
688 urb->iso_frame_desc[k].length = 1;
689 fifo->bit_line -= sink; /* we lower data margin every msec */
690
691 if (fifo->bit_line < BITLINE_INF) {
692 fifo->bit_line = BITLINE_INF;
693 }
694 }
695
696 if (frame_complete) {
697 fifo->delete_flg = TRUE;
698 fifo->hif->l1l2(fifo->hif,
699 PH_DATA | CONFIRM,
700 (void *) fifo->skbuff->
701 truesize);
702 if (fifo->skbuff && fifo->delete_flg) {
703 dev_kfree_skb_any(fifo->skbuff);
704 fifo->skbuff = NULL;
705 fifo->delete_flg = FALSE;
706 }
707 frame_complete = FALSE;
708 }
709 }
710 errcode = usb_submit_urb(urb, GFP_ATOMIC);
711 if (errcode < 0) {
712 printk(KERN_INFO
713 "HFC-S USB: error submitting ISO URB: %d \n",
714 errcode);
715 }
716 } else {
717 if (status && !hfc->disc_flag) {
718 printk(KERN_INFO
719 "HFC-S USB: tx_iso_complete : urb->status %s (%i), fifonum=%d\n",
720 symbolic(urb_errlist, status), status,
721 fifon);
722 }
723 }
724 } /* tx_iso_complete */
725
726 /*****************************************************/
727 /* receive completion routine for all ISO tx fifos */
728 /*****************************************************/
729 static void
730 rx_iso_complete(struct urb *urb, struct pt_regs *regs)
731 {
732 iso_urb_struct *context_iso_urb = (iso_urb_struct *) urb->context;
733 usb_fifo *fifo = context_iso_urb->owner_fifo;
734 hfcusb_data *hfc = fifo->hfc;
735 int k, len, errcode, offset, num_isoc_packets, fifon, maxlen,
736 status;
737 unsigned int iso_status;
738 __u8 *buf;
739 static __u8 eof[8];
740 #ifdef CONFIG_HISAX_DEBUG
741 __u8 i;
742 #endif
743
744 fifon = fifo->fifonum;
745 status = urb->status;
746
747 if (urb->status == -EOVERFLOW) {
748 #ifdef CONFIG_HISAX_DEBUG
749 DBG(USB_DBG,
750 "HFC-USB: ignoring USB DATAOVERRUN for fifo %i \n",
751 fifon);
752 #endif
753 status = 0;
754 }
755 if (fifo->active && !status) {
756 num_isoc_packets = iso_packets[fifon];
757 maxlen = fifo->usb_packet_maxlen;
758 for (k = 0; k < num_isoc_packets; ++k) {
759 len = urb->iso_frame_desc[k].actual_length;
760 offset = urb->iso_frame_desc[k].offset;
761 buf = context_iso_urb->buffer + offset;
762 iso_status = urb->iso_frame_desc[k].status;
763 #ifdef CONFIG_HISAX_DEBUG
764 if (iso_status && !hfc->disc_flag)
765 DBG(USB_DBG,
766 "HFC-S USB: ISO packet failure - status:%x",
767 iso_status);
768
769 if ((fifon == 5) && (debug > 1)) {
770 printk(KERN_INFO
771 "HFC-S USB: ISO-D-RX lst_urblen:%2d "
772 "act_urblen:%2d max-urblen:%2d "
773 "EOF:0x%0x DATA: ",
774 fifo->last_urblen, len, maxlen,
775 eof[5]);
776 for (i = 0; i < len; i++)
777 printk("%.2x ", buf[i]);
778 printk("\n");
779 }
780 #endif
781 if (fifo->last_urblen != maxlen) {
782 /* the threshold mask is in the 2nd status byte */
783 hfc->threshold_mask = buf[1];
784 /* care for L1 state only for D-Channel
785 to avoid overlapped iso completions */
786 if (fifon == 5) {
787 /* the S0 state is in the upper half
788 of the 1st status byte */
789 state_handler(hfc, buf[0] >> 4);
790 }
791 eof[fifon] = buf[0] & 1;
792 if (len > 2)
793 collect_rx_frame(fifo, buf + 2,
794 len - 2,
795 (len <
796 maxlen) ?
797 eof[fifon] : 0);
798 } else {
799 collect_rx_frame(fifo, buf, len,
800 (len <
801 maxlen) ? eof[fifon] :
802 0);
803 }
804 fifo->last_urblen = len;
805 }
806
807 fill_isoc_urb(urb, fifo->hfc->dev, fifo->pipe,
808 context_iso_urb->buffer, num_isoc_packets,
809 fifo->usb_packet_maxlen, fifo->intervall,
810 rx_iso_complete, urb->context);
811 errcode = usb_submit_urb(urb, GFP_ATOMIC);
812 if (errcode < 0) {
813 printk(KERN_INFO
814 "HFC-S USB: error submitting ISO URB: %d \n",
815 errcode);
816 }
817 } else {
818 if (status && !hfc->disc_flag) {
819 printk(KERN_INFO
820 "HFC-S USB: rx_iso_complete : "
821 "urb->status %d, fifonum %d\n",
822 status, fifon);
823 }
824 }
825 } /* rx_iso_complete */
826
827 /*****************************************************/
828 /* collect data from interrupt or isochron in */
829 /*****************************************************/
830 static void
831 collect_rx_frame(usb_fifo * fifo, __u8 * data, int len, int finish)
832 {
833 hfcusb_data *hfc = fifo->hfc;
834 int transp_mode, fifon;
835 #ifdef CONFIG_HISAX_DEBUG
836 int i;
837 #endif
838 fifon = fifo->fifonum;
839 transp_mode = 0;
840 if (fifon < 4 && hfc->b_mode[fifon / 2] == L1_MODE_TRANS)
841 transp_mode = TRUE;
842
843 if (!fifo->skbuff) {
844 fifo->skbuff = dev_alloc_skb(fifo->max_size + 3);
845 if (!fifo->skbuff) {
846 printk(KERN_INFO
847 "HFC-S USB: cannot allocate buffer (dev_alloc_skb) fifo:%d\n",
848 fifon);
849 return;
850 }
851 }
852 if (len) {
853 if (fifo->skbuff->len + len < fifo->max_size) {
854 memcpy(skb_put(fifo->skbuff, len), data, len);
855 } else {
856 #ifdef CONFIG_HISAX_DEBUG
857 printk(KERN_INFO "HFC-S USB: ");
858 for (i = 0; i < 15; i++)
859 printk("%.2x ",
860 fifo->skbuff->data[fifo->skbuff->
861 len - 15 + i]);
862 printk("\n");
863 #endif
864 printk(KERN_INFO
865 "HCF-USB: got frame exceeded fifo->max_size:%d on fifo:%d\n",
866 fifo->max_size, fifon);
867 }
868 }
869 if (transp_mode && fifo->skbuff->len >= 128) {
870 fifo->hif->l1l2(fifo->hif, PH_DATA | INDICATION,
871 fifo->skbuff);
872 fifo->skbuff = NULL;
873 return;
874 }
875 /* we have a complete hdlc packet */
876 if (finish) {
877 if ((!fifo->skbuff->data[fifo->skbuff->len - 1])
878 && (fifo->skbuff->len > 3)) {
879 /* remove CRC & status */
880 skb_trim(fifo->skbuff, fifo->skbuff->len - 3);
881 if (fifon == HFCUSB_PCM_RX) {
882 fifo->hif->l1l2(fifo->hif,
883 PH_DATA_E | INDICATION,
884 fifo->skbuff);
885 } else
886 fifo->hif->l1l2(fifo->hif,
887 PH_DATA | INDICATION,
888 fifo->skbuff);
889 fifo->skbuff = NULL; /* buffer was freed from upper layer */
890 } else {
891 if (fifo->skbuff->len > 3) {
892 printk(KERN_INFO
893 "HFC-S USB: got frame %d bytes but CRC ERROR on fifo:%d!!!\n",
894 fifo->skbuff->len, fifon);
895 #ifdef CONFIG_HISAX_DEBUG
896 if (debug > 1) {
897 printk(KERN_INFO "HFC-S USB: ");
898 for (i = 0; i < 15; i++)
899 printk("%.2x ",
900 fifo->skbuff->
901 data[fifo->skbuff->
902 len - 15 + i]);
903 printk("\n");
904 }
905 #endif
906 }
907 #ifdef CONFIG_HISAX_DEBUG
908 else {
909 printk(KERN_INFO
910 "HFC-S USB: frame to small (%d bytes)!!!\n",
911 fifo->skbuff->len);
912 }
913 #endif
914 skb_trim(fifo->skbuff, 0);
915 }
916 }
917 }
918
919 /***********************************************/
920 /* receive completion routine for all rx fifos */
921 /***********************************************/
922 static void
923 rx_complete(struct urb *urb, struct pt_regs *regs)
924 {
925 int len;
926 int status;
927 __u8 *buf, maxlen, fifon;
928 usb_fifo *fifo = (usb_fifo *) urb->context;
929 hfcusb_data *hfc = fifo->hfc;
930 static __u8 eof[8];
931 #ifdef CONFIG_HISAX_DEBUG
932 __u8 i;
933 #endif
934
935 urb->dev = hfc->dev; /* security init */
936
937 fifon = fifo->fifonum;
938 if ((!fifo->active) || (urb->status)) {
939 #ifdef CONFIG_HISAX_DEBUG
940 DBG(USB_DBG, "HFC-S USB: RX-Fifo %i is going down (%i)",
941 fifon, urb->status);
942 #endif
943 fifo->urb->interval = 0; /* cancel automatic rescheduling */
944 if (fifo->skbuff) {
945 dev_kfree_skb_any(fifo->skbuff);
946 fifo->skbuff = NULL;
947 }
948 return;
949 }
950 len = urb->actual_length;
951 buf = fifo->buffer;
952 maxlen = fifo->usb_packet_maxlen;
953
954 #ifdef CONFIG_HISAX_DEBUG
955 if ((fifon == 5) && (debug > 1)) {
956 printk(KERN_INFO
957 "HFC-S USB: INT-D-RX lst_urblen:%2d act_urblen:%2d max-urblen:%2d EOF:0x%0x DATA: ",
958 fifo->last_urblen, len, maxlen, eof[5]);
959 for (i = 0; i < len; i++)
960 printk("%.2x ", buf[i]);
961 printk("\n");
962 }
963 #endif
964
965 if (fifo->last_urblen != fifo->usb_packet_maxlen) {
966 /* the threshold mask is in the 2nd status byte */
967 hfc->threshold_mask = buf[1];
968 /* the S0 state is in the upper half of the 1st status byte */
969 state_handler(hfc, buf[0] >> 4);
970 eof[fifon] = buf[0] & 1;
971 /* if we have more than the 2 status bytes -> collect data */
972 if (len > 2)
973 collect_rx_frame(fifo, buf + 2,
974 urb->actual_length - 2,
975 (len < maxlen) ? eof[fifon] : 0);
976 } else {
977 collect_rx_frame(fifo, buf, urb->actual_length,
978 (len < maxlen) ? eof[fifon] : 0);
979 }
980 fifo->last_urblen = urb->actual_length;
981 status = usb_submit_urb(urb, GFP_ATOMIC);
982 if (status) {
983 printk(KERN_INFO
984 "HFC-S USB: error resubmitting URN at rx_complete...\n");
985 }
986 } /* rx_complete */
987
988 /***************************************************/
989 /* start the interrupt transfer for the given fifo */
990 /***************************************************/
991 static void
992 start_int_fifo(usb_fifo * fifo)
993 {
994 int errcode;
995
996 printk(KERN_INFO "HFC-S USB: starting intr IN fifo:%d\n",
997 fifo->fifonum);
998
999 if (!fifo->urb) {
1000 fifo->urb = usb_alloc_urb(0, GFP_KERNEL);
1001 if (!fifo->urb)
1002 return;
1003 }
1004 usb_fill_int_urb(fifo->urb, fifo->hfc->dev, fifo->pipe,
1005 fifo->buffer, fifo->usb_packet_maxlen,
1006 rx_complete, fifo, fifo->intervall);
1007 fifo->active = 1; /* must be marked active */
1008 errcode = usb_submit_urb(fifo->urb, GFP_KERNEL);
1009 if (errcode) {
1010 printk(KERN_INFO
1011 "HFC-S USB: submit URB error(start_int_info): status:%i\n",
1012 errcode);
1013 fifo->active = 0;
1014 fifo->skbuff = NULL;
1015 }
1016 } /* start_int_fifo */
1017
1018 /*****************************/
1019 /* set the B-channel mode */
1020 /*****************************/
1021 static void
1022 set_hfcmode(hfcusb_data * hfc, int channel, int mode)
1023 {
1024 __u8 val, idx_table[2] = { 0, 2 };
1025
1026 if (hfc->disc_flag) {
1027 return;
1028 }
1029 #ifdef CONFIG_HISAX_DEBUG
1030 DBG(ISDN_DBG, "HFC-S USB: setting channel %d to mode %d", channel,
1031 mode);
1032 #endif
1033 hfc->b_mode[channel] = mode;
1034
1035 /* setup CON_HDLC */
1036 val = 0;
1037 if (mode != L1_MODE_NULL)
1038 val = 8; /* enable fifo? */
1039 if (mode == L1_MODE_TRANS)
1040 val |= 2; /* set transparent bit */
1041
1042 /* set FIFO to transmit register */
1043 queue_control_request(hfc, HFCUSB_FIFO, idx_table[channel], 1);
1044 queue_control_request(hfc, HFCUSB_CON_HDLC, val, 1);
1045 /* reset fifo */
1046 queue_control_request(hfc, HFCUSB_INC_RES_F, 2, 1);
1047 /* set FIFO to receive register */
1048 queue_control_request(hfc, HFCUSB_FIFO, idx_table[channel] + 1, 1);
1049 queue_control_request(hfc, HFCUSB_CON_HDLC, val, 1);
1050 /* reset fifo */
1051 queue_control_request(hfc, HFCUSB_INC_RES_F, 2, 1);
1052
1053 val = 0x40;
1054 if (hfc->b_mode[0])
1055 val |= 1;
1056 if (hfc->b_mode[1])
1057 val |= 2;
1058 queue_control_request(hfc, HFCUSB_SCTRL, val, 1);
1059
1060 val = 0;
1061 if (hfc->b_mode[0])
1062 val |= 1;
1063 if (hfc->b_mode[1])
1064 val |= 2;
1065 queue_control_request(hfc, HFCUSB_SCTRL_R, val, 1);
1066
1067 if (mode == L1_MODE_NULL) {
1068 if (channel)
1069 handle_led(hfc, LED_B2_OFF);
1070 else
1071 handle_led(hfc, LED_B1_OFF);
1072 } else {
1073 if (channel)
1074 handle_led(hfc, LED_B2_ON);
1075 else
1076 handle_led(hfc, LED_B1_ON);
1077 }
1078 }
1079
1080 static void
1081 hfc_usb_l2l1(struct hisax_if *my_hisax_if, int pr, void *arg)
1082 {
1083 usb_fifo *fifo = my_hisax_if->priv;
1084 hfcusb_data *hfc = fifo->hfc;
1085
1086 switch (pr) {
1087 case PH_ACTIVATE | REQUEST:
1088 if (fifo->fifonum == HFCUSB_D_TX) {
1089 #ifdef CONFIG_HISAX_DEBUG
1090 DBG(ISDN_DBG,
1091 "HFC_USB: hfc_usb_d_l2l1 D-chan: PH_ACTIVATE | REQUEST");
1092 #endif
1093 if (hfc->l1_state != 3
1094 && hfc->l1_state != 7) {
1095 hfc->d_if.ifc.l1l2(&hfc->d_if.ifc,
1096 PH_DEACTIVATE |
1097 INDICATION,
1098 NULL);
1099 #ifdef CONFIG_HISAX_DEBUG
1100 DBG(ISDN_DBG,
1101 "HFC-S USB: PH_DEACTIVATE | INDICATION sent (not state 3 or 7)");
1102 #endif
1103 } else {
1104 if (hfc->l1_state == 7) { /* l1 already active */
1105 hfc->d_if.ifc.l1l2(&hfc->
1106 d_if.
1107 ifc,
1108 PH_ACTIVATE
1109 |
1110 INDICATION,
1111 NULL);
1112 #ifdef CONFIG_HISAX_DEBUG
1113 DBG(ISDN_DBG,
1114 "HFC-S USB: PH_ACTIVATE | INDICATION sent again ;)");
1115 #endif
1116 } else {
1117 /* force sending sending INFO1 */
1118 queue_control_request(hfc,
1119 HFCUSB_STATES,
1120 0x14,
1121 1);
1122 mdelay(1);
1123 /* start l1 activation */
1124 queue_control_request(hfc,
1125 HFCUSB_STATES,
1126 0x04,
1127 1);
1128 if (!timer_pending
1129 (&hfc->t3_timer)) {
1130 hfc->t3_timer.
1131 expires =
1132 jiffies +
1133 (HFC_TIMER_T3 *
1134 HZ) / 1000;
1135 add_timer(&hfc->
1136 t3_timer);
1137 }
1138 }
1139 }
1140 } else {
1141 #ifdef CONFIG_HISAX_DEBUG
1142 DBG(ISDN_DBG,
1143 "HFC_USB: hfc_usb_d_l2l1 Bx-chan: PH_ACTIVATE | REQUEST");
1144 #endif
1145 set_hfcmode(hfc,
1146 (fifo->fifonum ==
1147 HFCUSB_B1_TX) ? 0 : 1,
1148 (int) arg);
1149 fifo->hif->l1l2(fifo->hif,
1150 PH_ACTIVATE | INDICATION,
1151 NULL);
1152 }
1153 break;
1154 case PH_DEACTIVATE | REQUEST:
1155 if (fifo->fifonum == HFCUSB_D_TX) {
1156 #ifdef CONFIG_HISAX_DEBUG
1157 DBG(ISDN_DBG,
1158 "HFC_USB: hfc_usb_d_l2l1 D-chan: PH_DEACTIVATE | REQUEST");
1159 #endif
1160 printk(KERN_INFO
1161 "HFC-S USB: ISDN TE device should not deativate...\n");
1162 } else {
1163 #ifdef CONFIG_HISAX_DEBUG
1164 DBG(ISDN_DBG,
1165 "HFC_USB: hfc_usb_d_l2l1 Bx-chan: PH_DEACTIVATE | REQUEST");
1166 #endif
1167 set_hfcmode(hfc,
1168 (fifo->fifonum ==
1169 HFCUSB_B1_TX) ? 0 : 1,
1170 (int) L1_MODE_NULL);
1171 fifo->hif->l1l2(fifo->hif,
1172 PH_DEACTIVATE | INDICATION,
1173 NULL);
1174 }
1175 break;
1176 case PH_DATA | REQUEST:
1177 if (fifo->skbuff && fifo->delete_flg) {
1178 dev_kfree_skb_any(fifo->skbuff);
1179 fifo->skbuff = NULL;
1180 fifo->delete_flg = FALSE;
1181 }
1182 fifo->skbuff = arg; /* we have a new buffer */
1183 break;
1184 default:
1185 printk(KERN_INFO
1186 "HFC_USB: hfc_usb_d_l2l1: unkown state : %#x\n",
1187 pr);
1188 break;
1189 }
1190 }
1191
1192 /***************************************************************************/
1193 /* usb_init is called once when a new matching device is detected to setup */
1194 /* main parameters. It registers the driver at the main hisax module. */
1195 /* on success 0 is returned. */
1196 /***************************************************************************/
1197 static int
1198 usb_init(hfcusb_data * hfc)
1199 {
1200 usb_fifo *fifo;
1201 int i, err;
1202 u_char b;
1203 struct hisax_b_if *p_b_if[2];
1204
1205 /* check the chip id */
1206 if (read_usb(hfc, HFCUSB_CHIP_ID, &b) != 1) {
1207 printk(KERN_INFO "HFC-USB: cannot read chip id\n");
1208 return (1);
1209 }
1210 if (b != HFCUSB_CHIPID) {
1211 printk(KERN_INFO "HFC-S USB: Invalid chip id 0x%02x\n", b);
1212 return (1);
1213 }
1214
1215 /* first set the needed config, interface and alternate */
1216 err = usb_set_interface(hfc->dev, hfc->if_used, hfc->alt_used);
1217
1218 /* do Chip reset */
1219 write_usb(hfc, HFCUSB_CIRM, 8);
1220 /* aux = output, reset off */
1221 write_usb(hfc, HFCUSB_CIRM, 0x10);
1222
1223 /* set USB_SIZE to match the the wMaxPacketSize for INT or BULK transfers */
1224 write_usb(hfc, HFCUSB_USB_SIZE,
1225 (hfc->packet_size / 8) | ((hfc->packet_size / 8) << 4));
1226
1227 /* set USB_SIZE_I to match the the wMaxPacketSize for ISO transfers */
1228 write_usb(hfc, HFCUSB_USB_SIZE_I, hfc->iso_packet_size);
1229
1230 /* enable PCM/GCI master mode */
1231 write_usb(hfc, HFCUSB_MST_MODE1, 0); /* set default values */
1232 write_usb(hfc, HFCUSB_MST_MODE0, 1); /* enable master mode */
1233
1234 /* init the fifos */
1235 write_usb(hfc, HFCUSB_F_THRES,
1236 (HFCUSB_TX_THRESHOLD /
1237 8) | ((HFCUSB_RX_THRESHOLD / 8) << 4));
1238
1239 fifo = hfc->fifos;
1240 for (i = 0; i < HFCUSB_NUM_FIFOS; i++) {
1241 write_usb(hfc, HFCUSB_FIFO, i); /* select the desired fifo */
1242 fifo[i].skbuff = NULL; /* init buffer pointer */
1243 fifo[i].max_size =
1244 (i <= HFCUSB_B2_RX) ? MAX_BCH_SIZE : MAX_DFRAME_LEN;
1245 fifo[i].last_urblen = 0;
1246 /* set 2 bit for D- & E-channel */
1247 write_usb(hfc, HFCUSB_HDLC_PAR,
1248 ((i <= HFCUSB_B2_RX) ? 0 : 2));
1249 /* rx hdlc, enable IFF for D-channel */
1250 write_usb(hfc, HFCUSB_CON_HDLC,
1251 ((i == HFCUSB_D_TX) ? 0x09 : 0x08));
1252 write_usb(hfc, HFCUSB_INC_RES_F, 2); /* reset the fifo */
1253 }
1254
1255 write_usb(hfc, HFCUSB_CLKDEL, 0x0f); /* clock delay value */
1256 write_usb(hfc, HFCUSB_STATES, 3 | 0x10); /* set deactivated mode */
1257 write_usb(hfc, HFCUSB_STATES, 3); /* enable state machine */
1258
1259 write_usb(hfc, HFCUSB_SCTRL_R, 0); /* disable both B receivers */
1260 write_usb(hfc, HFCUSB_SCTRL, 0x40); /* disable B transmitters + capacitive mode */
1261
1262 /* set both B-channel to not connected */
1263 hfc->b_mode[0] = L1_MODE_NULL;
1264 hfc->b_mode[1] = L1_MODE_NULL;
1265
1266 hfc->l1_activated = FALSE;
1267 hfc->disc_flag = FALSE;
1268 hfc->led_state = 0;
1269 hfc->led_new_data = 0;
1270 hfc->old_led_state = 0;
1271
1272 /* init the t3 timer */
1273 init_timer(&hfc->t3_timer);
1274 hfc->t3_timer.data = (long) hfc;
1275 hfc->t3_timer.function = (void *) l1_timer_expire_t3;
1276
1277 /* init the t4 timer */
1278 init_timer(&hfc->t4_timer);
1279 hfc->t4_timer.data = (long) hfc;
1280 hfc->t4_timer.function = (void *) l1_timer_expire_t4;
1281
1282 /* init the background machinery for control requests */
1283 hfc->ctrl_read.bRequestType = 0xc0;
1284 hfc->ctrl_read.bRequest = 1;
1285 hfc->ctrl_read.wLength = cpu_to_le16(1);
1286 hfc->ctrl_write.bRequestType = 0x40;
1287 hfc->ctrl_write.bRequest = 0;
1288 hfc->ctrl_write.wLength = 0;
1289 usb_fill_control_urb(hfc->ctrl_urb,
1290 hfc->dev,
1291 hfc->ctrl_out_pipe,
1292 (u_char *) & hfc->ctrl_write,
1293 NULL, 0, ctrl_complete, hfc);
1294 /* Init All Fifos */
1295 for (i = 0; i < HFCUSB_NUM_FIFOS; i++) {
1296 hfc->fifos[i].iso[0].purb = NULL;
1297 hfc->fifos[i].iso[1].purb = NULL;
1298 hfc->fifos[i].active = 0;
1299 }
1300 /* register Modul to upper Hisax Layers */
1301 hfc->d_if.owner = THIS_MODULE;
1302 hfc->d_if.ifc.priv = &hfc->fifos[HFCUSB_D_TX];
1303 hfc->d_if.ifc.l2l1 = hfc_usb_l2l1;
1304 for (i = 0; i < 2; i++) {
1305 hfc->b_if[i].ifc.priv = &hfc->fifos[HFCUSB_B1_TX + i * 2];
1306 hfc->b_if[i].ifc.l2l1 = hfc_usb_l2l1;
1307 p_b_if[i] = &hfc->b_if[i];
1308 }
1309 /* default Prot: EURO ISDN, should be a module_param */
1310 hfc->protocol = 2;
1311 hisax_register(&hfc->d_if, p_b_if, "hfc_usb", hfc->protocol);
1312
1313 #ifdef CONFIG_HISAX_DEBUG
1314 hfc_debug = debug;
1315 #endif
1316
1317 for (i = 0; i < 4; i++)
1318 hfc->fifos[i].hif = &p_b_if[i / 2]->ifc;
1319 for (i = 4; i < 8; i++)
1320 hfc->fifos[i].hif = &hfc->d_if.ifc;
1321
1322 /* 3 (+1) INT IN + 3 ISO OUT */
1323 if (hfc->cfg_used == CNF_3INT3ISO || hfc->cfg_used == CNF_4INT3ISO) {
1324 start_int_fifo(hfc->fifos + HFCUSB_D_RX);
1325 if (hfc->fifos[HFCUSB_PCM_RX].pipe)
1326 start_int_fifo(hfc->fifos + HFCUSB_PCM_RX);
1327 start_int_fifo(hfc->fifos + HFCUSB_B1_RX);
1328 start_int_fifo(hfc->fifos + HFCUSB_B2_RX);
1329 }
1330 /* 3 (+1) ISO IN + 3 ISO OUT */
1331 if (hfc->cfg_used == CNF_3ISO3ISO || hfc->cfg_used == CNF_4ISO3ISO) {
1332 start_isoc_chain(hfc->fifos + HFCUSB_D_RX, ISOC_PACKETS_D,
1333 rx_iso_complete, 16);
1334 if (hfc->fifos[HFCUSB_PCM_RX].pipe)
1335 start_isoc_chain(hfc->fifos + HFCUSB_PCM_RX,
1336 ISOC_PACKETS_D, rx_iso_complete,
1337 16);
1338 start_isoc_chain(hfc->fifos + HFCUSB_B1_RX, ISOC_PACKETS_B,
1339 rx_iso_complete, 16);
1340 start_isoc_chain(hfc->fifos + HFCUSB_B2_RX, ISOC_PACKETS_B,
1341 rx_iso_complete, 16);
1342 }
1343
1344 start_isoc_chain(hfc->fifos + HFCUSB_D_TX, ISOC_PACKETS_D,
1345 tx_iso_complete, 1);
1346 start_isoc_chain(hfc->fifos + HFCUSB_B1_TX, ISOC_PACKETS_B,
1347 tx_iso_complete, 1);
1348 start_isoc_chain(hfc->fifos + HFCUSB_B2_TX, ISOC_PACKETS_B,
1349 tx_iso_complete, 1);
1350
1351 handle_led(hfc, LED_POWER_ON);
1352
1353 return (0);
1354 } /* usb_init */
1355
1356 /*************************************************/
1357 /* function called to probe a new plugged device */
1358 /*************************************************/
1359 static int
1360 hfc_usb_probe(struct usb_interface *intf, const struct usb_device_id *id)
1361 {
1362 struct usb_device *dev = interface_to_usbdev(intf);
1363 hfcusb_data *context;
1364 struct usb_host_interface *iface = intf->cur_altsetting;
1365 struct usb_host_interface *iface_used = NULL;
1366 struct usb_host_endpoint *ep;
1367 int ifnum = iface->desc.bInterfaceNumber;
1368 int i, idx, alt_idx, probe_alt_setting, vend_idx, cfg_used, *vcf,
1369 attr, cfg_found, cidx, ep_addr;
1370 int cmptbl[16], small_match, iso_packet_size, packet_size,
1371 alt_used = 0;
1372 hfcsusb_vdata *driver_info;
1373
1374 vend_idx = 0xffff;
1375 for (i = 0; hfcusb_idtab[i].idVendor; i++) {
1376 if ((le16_to_cpu(dev->descriptor.idVendor) == hfcusb_idtab[i].idVendor)
1377 && (le16_to_cpu(dev->descriptor.idProduct) == hfcusb_idtab[i].idProduct)) {
1378 vend_idx = i;
1379 continue;
1380 }
1381 }
1382
1383 #ifdef CONFIG_HISAX_DEBUG
1384 DBG(USB_DBG,
1385 "HFC-USB: probing interface(%d) actalt(%d) minor(%d)\n", ifnum,
1386 iface->desc.bAlternateSetting, intf->minor);
1387 #endif
1388 printk(KERN_INFO
1389 "HFC-S USB: probing interface(%d) actalt(%d) minor(%d)\n",
1390 ifnum, iface->desc.bAlternateSetting, intf->minor);
1391
1392 if (vend_idx != 0xffff) {
1393 /* if vendor and product ID is OK, start probing alternate settings */
1394 alt_idx = 0;
1395 small_match = 0xffff;
1396
1397 /* default settings */
1398 iso_packet_size = 16;
1399 packet_size = 64;
1400
1401 while (alt_idx < intf->num_altsetting) {
1402 iface = intf->altsetting + alt_idx;
1403 probe_alt_setting = iface->desc.bAlternateSetting;
1404 cfg_used = 0;
1405
1406 /* check for config EOL element */
1407 while (validconf[cfg_used][0]) {
1408 cfg_found = TRUE;
1409 vcf = validconf[cfg_used];
1410 /* first endpoint descriptor */
1411 ep = iface->endpoint;
1412 #ifdef CONFIG_HISAX_DEBUG
1413 DBG(USB_DBG,
1414 "HFC-S USB: (if=%d alt=%d cfg_used=%d)\n",
1415 ifnum, probe_alt_setting, cfg_used);
1416 #endif
1417 memcpy(cmptbl, vcf, 16 * sizeof(int));
1418
1419 /* check for all endpoints in this alternate setting */
1420 for (i = 0; i < iface->desc.bNumEndpoints;
1421 i++) {
1422 ep_addr =
1423 ep->desc.bEndpointAddress;
1424 /* get endpoint base */
1425 idx = ((ep_addr & 0x7f) - 1) * 2;
1426 if (ep_addr & 0x80)
1427 idx++;
1428 attr = ep->desc.bmAttributes;
1429 if (cmptbl[idx] == EP_NUL) {
1430 cfg_found = FALSE;
1431 }
1432 if (attr == USB_ENDPOINT_XFER_INT
1433 && cmptbl[idx] == EP_INT)
1434 cmptbl[idx] = EP_NUL;
1435 if (attr == USB_ENDPOINT_XFER_BULK
1436 && cmptbl[idx] == EP_BLK)
1437 cmptbl[idx] = EP_NUL;
1438 if (attr == USB_ENDPOINT_XFER_ISOC
1439 && cmptbl[idx] == EP_ISO)
1440 cmptbl[idx] = EP_NUL;
1441
1442 /* check if all INT endpoints match minimum interval */
1443 if (attr == USB_ENDPOINT_XFER_INT
1444 && ep->desc.bInterval <
1445 vcf[17]) {
1446 #ifdef CONFIG_HISAX_DEBUG
1447 if (cfg_found)
1448 DBG(USB_DBG,
1449 "HFC-S USB: Interrupt Endpoint interval < %d found - skipping config",
1450 vcf[17]);
1451 #endif
1452 cfg_found = FALSE;
1453 }
1454 ep++;
1455 }
1456 for (i = 0; i < 16; i++) {
1457 /* all entries must be EP_NOP or EP_NUL for a valid config */
1458 if (cmptbl[i] != EP_NOP
1459 && cmptbl[i] != EP_NUL)
1460 cfg_found = FALSE;
1461 }
1462 if (cfg_found) {
1463 if (cfg_used < small_match) {
1464 small_match = cfg_used;
1465 alt_used =
1466 probe_alt_setting;
1467 iface_used = iface;
1468 }
1469 #ifdef CONFIG_HISAX_DEBUG
1470 DBG(USB_DBG,
1471 "HFC-USB: small_match=%x %x\n",
1472 small_match, alt_used);
1473 #endif
1474 }
1475 cfg_used++;
1476 }
1477 alt_idx++;
1478 } /* (alt_idx < intf->num_altsetting) */
1479
1480 /* found a valid USB Ta Endpint config */
1481 if (small_match != 0xffff) {
1482 iface = iface_used;
1483 if (!
1484 (context =
1485 kmalloc(sizeof(hfcusb_data), GFP_KERNEL)))
1486 return (-ENOMEM); /* got no mem */
1487 memset(context, 0, sizeof(hfcusb_data));
1488
1489 ep = iface->endpoint;
1490 vcf = validconf[small_match];
1491
1492 for (i = 0; i < iface->desc.bNumEndpoints; i++) {
1493 ep_addr = ep->desc.bEndpointAddress;
1494 /* get endpoint base */
1495 idx = ((ep_addr & 0x7f) - 1) * 2;
1496 if (ep_addr & 0x80)
1497 idx++;
1498 cidx = idx & 7;
1499 attr = ep->desc.bmAttributes;
1500
1501 /* init Endpoints */
1502 if (vcf[idx] != EP_NOP
1503 && vcf[idx] != EP_NUL) {
1504 switch (attr) {
1505 case USB_ENDPOINT_XFER_INT:
1506 context->
1507 fifos[cidx].
1508 pipe =
1509 usb_rcvintpipe
1510 (dev,
1511 ep->desc.
1512 bEndpointAddress);
1513 context->
1514 fifos[cidx].
1515 usb_transfer_mode
1516 = USB_INT;
1517 packet_size =
1518 le16_to_cpu(ep->desc.wMaxPacketSize);
1519 break;
1520 case USB_ENDPOINT_XFER_BULK:
1521 if (ep_addr & 0x80)
1522 context->
1523 fifos
1524 [cidx].
1525 pipe =
1526 usb_rcvbulkpipe
1527 (dev,
1528 ep->
1529 desc.
1530 bEndpointAddress);
1531 else
1532 context->
1533 fifos
1534 [cidx].
1535 pipe =
1536 usb_sndbulkpipe
1537 (dev,
1538 ep->
1539 desc.
1540 bEndpointAddress);
1541 context->
1542 fifos[cidx].
1543 usb_transfer_mode
1544 = USB_BULK;
1545 packet_size =
1546 le16_to_cpu(ep->desc.wMaxPacketSize);
1547 break;
1548 case USB_ENDPOINT_XFER_ISOC:
1549 if (ep_addr & 0x80)
1550 context->
1551 fifos
1552 [cidx].
1553 pipe =
1554 usb_rcvisocpipe
1555 (dev,
1556 ep->
1557 desc.
1558 bEndpointAddress);
1559 else
1560 context->
1561 fifos
1562 [cidx].
1563 pipe =
1564 usb_sndisocpipe
1565 (dev,
1566 ep->
1567 desc.
1568 bEndpointAddress);
1569 context->
1570 fifos[cidx].
1571 usb_transfer_mode
1572 = USB_ISOC;
1573 iso_packet_size =
1574 le16_to_cpu(ep->desc.wMaxPacketSize);
1575 break;
1576 default:
1577 context->
1578 fifos[cidx].
1579 pipe = 0;
1580 } /* switch attribute */
1581
1582 if (context->fifos[cidx].pipe) {
1583 context->fifos[cidx].
1584 fifonum = cidx;
1585 context->fifos[cidx].hfc =
1586 context;
1587 context->fifos[cidx].usb_packet_maxlen =
1588 le16_to_cpu(ep->desc.wMaxPacketSize);
1589 context->fifos[cidx].
1590 intervall =
1591 ep->desc.bInterval;
1592 context->fifos[cidx].
1593 skbuff = NULL;
1594 }
1595 }
1596 ep++;
1597 }
1598 context->dev = dev; /* save device */
1599 context->if_used = ifnum; /* save used interface */
1600 context->alt_used = alt_used; /* and alternate config */
1601 context->ctrl_paksize = dev->descriptor.bMaxPacketSize0; /* control size */
1602 context->cfg_used = vcf[16]; /* store used config */
1603 context->vend_idx = vend_idx; /* store found vendor */
1604 context->packet_size = packet_size;
1605 context->iso_packet_size = iso_packet_size;
1606
1607 /* create the control pipes needed for register access */
1608 context->ctrl_in_pipe =
1609 usb_rcvctrlpipe(context->dev, 0);
1610 context->ctrl_out_pipe =
1611 usb_sndctrlpipe(context->dev, 0);
1612 context->ctrl_urb = usb_alloc_urb(0, GFP_KERNEL);
1613
1614 driver_info =
1615 (hfcsusb_vdata *) hfcusb_idtab[vend_idx].
1616 driver_info;
1617 printk(KERN_INFO "HFC-S USB: detected \"%s\"\n",
1618 driver_info->vend_name);
1619 #ifdef CONFIG_HISAX_DEBUG
1620 DBG(USB_DBG,
1621 "HFC-S USB: Endpoint-Config: %s (if=%d alt=%d)\n",
1622 conf_str[small_match], context->if_used,
1623 context->alt_used);
1624 printk(KERN_INFO
1625 "HFC-S USB: E-channel (\"ECHO:\") logging ");
1626 if (validconf[small_match][18])
1627 printk(" possible\n");
1628 else
1629 printk("NOT possible\n");
1630 #endif
1631 /* init the chip and register the driver */
1632 if (usb_init(context)) {
1633 if (context->ctrl_urb) {
1634 usb_unlink_urb(context->ctrl_urb);
1635 usb_free_urb(context->ctrl_urb);
1636 context->ctrl_urb = NULL;
1637 }
1638 kfree(context);
1639 return (-EIO);
1640 }
1641 usb_set_intfdata(intf, context);
1642 return (0);
1643 }
1644 } else {
1645 printk(KERN_INFO
1646 "HFC-S USB: no valid vendor found in USB descriptor\n");
1647 }
1648 return (-EIO);
1649 }
1650
1651 /****************************************************/
1652 /* function called when an active device is removed */
1653 /****************************************************/
1654 static void
1655 hfc_usb_disconnect(struct usb_interface
1656 *intf)
1657 {
1658 hfcusb_data *context = usb_get_intfdata(intf);
1659 int i;
1660 printk(KERN_INFO "HFC-S USB: device disconnect\n");
1661 context->disc_flag = TRUE;
1662 usb_set_intfdata(intf, NULL);
1663 if (!context)
1664 return;
1665 if (timer_pending(&context->t3_timer))
1666 del_timer(&context->t3_timer);
1667 if (timer_pending(&context->t4_timer))
1668 del_timer(&context->t4_timer);
1669 /* tell all fifos to terminate */
1670 for (i = 0; i < HFCUSB_NUM_FIFOS; i++) {
1671 if (context->fifos[i].usb_transfer_mode == USB_ISOC) {
1672 if (context->fifos[i].active > 0) {
1673 stop_isoc_chain(&context->fifos[i]);
1674 #ifdef CONFIG_HISAX_DEBUG
1675 DBG(USB_DBG,
1676 "HFC-S USB: hfc_usb_disconnect: stopping ISOC chain Fifo no %i",
1677 i);
1678 #endif
1679 }
1680 } else {
1681 if (context->fifos[i].active > 0) {
1682 context->fifos[i].active = 0;
1683 #ifdef CONFIG_HISAX_DEBUG
1684 DBG(USB_DBG,
1685 "HFC-S USB: hfc_usb_disconnect: unlinking URB for Fifo no %i",
1686 i);
1687 #endif
1688 }
1689 if (context->fifos[i].urb) {
1690 usb_unlink_urb(context->fifos[i].urb);
1691 usb_free_urb(context->fifos[i].urb);
1692 context->fifos[i].urb = NULL;
1693 }
1694 }
1695 context->fifos[i].active = 0;
1696 }
1697 /* wait for all URBS to terminate */
1698 mdelay(10);
1699 if (context->ctrl_urb) {
1700 usb_unlink_urb(context->ctrl_urb);
1701 usb_free_urb(context->ctrl_urb);
1702 context->ctrl_urb = NULL;
1703 }
1704 hisax_unregister(&context->d_if);
1705 kfree(context); /* free our structure again */
1706 } /* hfc_usb_disconnect */
1707
1708 /************************************/
1709 /* our driver information structure */
1710 /************************************/
1711 static struct usb_driver hfc_drv = {
1712 .name = "hfc_usb",
1713 .id_table = hfcusb_idtab,
1714 .probe = hfc_usb_probe,
1715 .disconnect = hfc_usb_disconnect,
1716 };
1717 static void __exit
1718 hfc_usb_exit(void)
1719 {
1720 #ifdef CONFIG_HISAX_DEBUG
1721 DBG(USB_DBG, "HFC-S USB: calling \"hfc_usb_exit\" ...");
1722 #endif
1723 usb_deregister(&hfc_drv); /* release our driver */
1724 printk(KERN_INFO "HFC-S USB: module removed\n");
1725 }
1726
1727 static int __init
1728 hfc_usb_init(void)
1729 {
1730 #ifndef CONFIG_HISAX_DEBUG
1731 unsigned int debug = -1;
1732 #endif
1733 char revstr[30], datestr[30], dummy[30];
1734 sscanf(hfcusb_revision,
1735 "%s %s $ %s %s %s $ ", dummy, revstr,
1736 dummy, datestr, dummy);
1737 printk(KERN_INFO
1738 "HFC-S USB: driver module revision %s date %s loaded, (debug=%i)\n",
1739 revstr, datestr, debug);
1740 if (usb_register(&hfc_drv)) {
1741 printk(KERN_INFO
1742 "HFC-S USB: Unable to register HFC-S USB module at usb stack\n");
1743 return (-1); /* unable to register */
1744 }
1745 return (0);
1746 }
1747
1748 module_init(hfc_usb_init);
1749 module_exit(hfc_usb_exit);
1750 MODULE_AUTHOR(DRIVER_AUTHOR);
1751 MODULE_DESCRIPTION(DRIVER_DESC);
1752 MODULE_LICENSE("GPL");
1753 MODULE_DEVICE_TABLE(usb, hfcusb_idtab);
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