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Linux 2.6.21
[linux/fpc-iii.git] / drivers / isdn / hisax / hfc_usb.c
blob9f44d3e69fb0e78ef86362031999f0911e15c337
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 <linux/smp_lock.h>
41 #include "hisax.h"
42 #include "hisax_if.h"
43 #include "hfc_usb.h"
44
45 static const char *hfcusb_revision =
46 "$Revision: 2.3.2.13 $ $Date: 2006/02/17 17:17:22 $ ";
47
48 /* Hisax debug support
49 * use "modprobe debug=x" where x is bitfield of USB_DBG & ISDN_DBG
50 */
51 #ifdef CONFIG_HISAX_DEBUG
52 #include <linux/moduleparam.h>
53 #define __debug_variable hfc_debug
54 #include "hisax_debug.h"
55 static u_int debug;
56 module_param(debug, uint, 0);
57 static int hfc_debug;
58 #endif
59
60 /* private vendor specific data */
61 typedef struct {
62 __u8 led_scheme; // led display scheme
63 signed short led_bits[8]; // array of 8 possible LED bitmask settings
64 char *vend_name; // device name
65 } hfcsusb_vdata;
66
67 /****************************************/
68 /* data defining the devices to be used */
69 /****************************************/
70 static struct usb_device_id hfcusb_idtab[] = {
71 {
72 USB_DEVICE(0x0959, 0x2bd0),
73 .driver_info = (unsigned long) &((hfcsusb_vdata)
74 {LED_OFF, {4, 0, 2, 1},
75 "ISDN USB TA (Cologne Chip HFC-S USB based)"}),
76 },
77 {
78 USB_DEVICE(0x0675, 0x1688),
79 .driver_info = (unsigned long) &((hfcsusb_vdata)
80 {LED_SCHEME1, {1, 2, 0, 0},
81 "DrayTek miniVigor 128 USB ISDN TA"}),
82 },
83 {
84 USB_DEVICE(0x07b0, 0x0007),
85 .driver_info = (unsigned long) &((hfcsusb_vdata)
86 {LED_SCHEME1, {0x80, -64, -32, -16},
87 "Billion tiny USB ISDN TA 128"}),
88 },
89 {
90 USB_DEVICE(0x0742, 0x2008),
91 .driver_info = (unsigned long) &((hfcsusb_vdata)
92 {LED_SCHEME1, {4, 0, 2, 1},
93 "Stollmann USB TA"}),
94 },
95 {
96 USB_DEVICE(0x0742, 0x2009),
97 .driver_info = (unsigned long) &((hfcsusb_vdata)
98 {LED_SCHEME1, {4, 0, 2, 1},
99 "Aceex USB ISDN TA"}),
100 },
101 {
102 USB_DEVICE(0x0742, 0x200A),
103 .driver_info = (unsigned long) &((hfcsusb_vdata)
104 {LED_SCHEME1, {4, 0, 2, 1},
105 "OEM USB ISDN TA"}),
106 },
107 {
108 USB_DEVICE(0x08e3, 0x0301),
109 .driver_info = (unsigned long) &((hfcsusb_vdata)
110 {LED_SCHEME1, {2, 0, 1, 4},
111 "Olitec USB RNIS"}),
112 },
113 {
114 USB_DEVICE(0x07fa, 0x0846),
115 .driver_info = (unsigned long) &((hfcsusb_vdata)
116 {LED_SCHEME1, {0x80, -64, -32, -16},
117 "Bewan Modem RNIS USB"}),
118 },
119 {
120 USB_DEVICE(0x07fa, 0x0847),
121 .driver_info = (unsigned long) &((hfcsusb_vdata)
122 {LED_SCHEME1, {0x80, -64, -32, -16},
123 "Djinn Numeris USB"}),
124 },
125 {
126 USB_DEVICE(0x07b0, 0x0006),
127 .driver_info = (unsigned long) &((hfcsusb_vdata)
128 {LED_SCHEME1, {0x80, -64, -32, -16},
129 "Twister ISDN TA"}),
130 },
131 { }
132 };
133
134 /***************************************************************/
135 /* structure defining input+output fifos (interrupt/bulk mode) */
136 /***************************************************************/
137 struct usb_fifo; /* forward definition */
138 typedef struct iso_urb_struct {
139 struct urb *purb;
140 __u8 buffer[ISO_BUFFER_SIZE]; /* buffer incoming/outgoing data */
141 struct usb_fifo *owner_fifo; /* pointer to owner fifo */
142 } iso_urb_struct;
143
144
145 struct hfcusb_data; /* forward definition */
146 typedef struct usb_fifo {
147 int fifonum; /* fifo index attached to this structure */
148 int active; /* fifo is currently active */
149 struct hfcusb_data *hfc; /* pointer to main structure */
150 int pipe; /* address of endpoint */
151 __u8 usb_packet_maxlen; /* maximum length for usb transfer */
152 unsigned int max_size; /* maximum size of receive/send packet */
153 __u8 intervall; /* interrupt interval */
154 struct sk_buff *skbuff; /* actual used buffer */
155 struct urb *urb; /* transfer structure for usb routines */
156 __u8 buffer[128]; /* buffer incoming/outgoing data */
157 int bit_line; /* how much bits are in the fifo? */
158
159 volatile __u8 usb_transfer_mode; /* switched between ISO and INT */
160 iso_urb_struct iso[2]; /* need two urbs to have one always for pending */
161 struct hisax_if *hif; /* hisax interface */
162 int delete_flg; /* only delete skbuff once */
163 int last_urblen; /* remember length of last packet */
164
165 } usb_fifo;
166
167 /*********************************************/
168 /* structure holding all data for one device */
169 /*********************************************/
170 typedef struct hfcusb_data {
171 /* HiSax Interface for loadable Layer1 drivers */
172 struct hisax_d_if d_if; /* see hisax_if.h */
173 struct hisax_b_if b_if[2]; /* see hisax_if.h */
174 int protocol;
175
176 struct usb_device *dev; /* our device */
177 int if_used; /* used interface number */
178 int alt_used; /* used alternate config */
179 int ctrl_paksize; /* control pipe packet size */
180 int ctrl_in_pipe, ctrl_out_pipe; /* handles for control pipe */
181 int cfg_used; /* configuration index used */
182 int vend_idx; /* vendor found */
183 int b_mode[2]; /* B-channel mode */
184 int l1_activated; /* layer 1 activated */
185 int disc_flag; /* 'true' if device was disonnected to avoid some USB actions */
186 int packet_size, iso_packet_size;
187
188 /* control pipe background handling */
189 ctrl_buft ctrl_buff[HFC_CTRL_BUFSIZE]; /* buffer holding queued data */
190 volatile int ctrl_in_idx, ctrl_out_idx, ctrl_cnt; /* input/output pointer + count */
191 struct urb *ctrl_urb; /* transfer structure for control channel */
192
193 struct usb_ctrlrequest ctrl_write; /* buffer for control write request */
194 struct usb_ctrlrequest ctrl_read; /* same for read request */
195
196 __u8 old_led_state, led_state, led_new_data, led_b_active;
197
198 volatile __u8 threshold_mask; /* threshold actually reported */
199 volatile __u8 bch_enables; /* or mask for sctrl_r and sctrl register values */
200
201 usb_fifo fifos[HFCUSB_NUM_FIFOS]; /* structure holding all fifo data */
202
203 volatile __u8 l1_state; /* actual l1 state */
204 struct timer_list t3_timer; /* timer 3 for activation/deactivation */
205 struct timer_list t4_timer; /* timer 4 for activation/deactivation */
206 } hfcusb_data;
207
208
209 static void collect_rx_frame(usb_fifo * fifo, __u8 * data, int len,
210 int finish);
211
212
213 static inline const char *
214 symbolic(struct hfcusb_symbolic_list list[], const int num)
215 {
216 int i;
217 for (i = 0; list[i].name != NULL; i++)
218 if (list[i].num == num)
219 return (list[i].name);
220 return "<unknown ERROR>";
221 }
222
223
224 /******************************************************/
225 /* start next background transfer for control channel */
226 /******************************************************/
227 static void
228 ctrl_start_transfer(hfcusb_data * hfc)
229 {
230 if (hfc->ctrl_cnt) {
231 hfc->ctrl_urb->pipe = hfc->ctrl_out_pipe;
232 hfc->ctrl_urb->setup_packet = (u_char *) & hfc->ctrl_write;
233 hfc->ctrl_urb->transfer_buffer = NULL;
234 hfc->ctrl_urb->transfer_buffer_length = 0;
235 hfc->ctrl_write.wIndex =
236 cpu_to_le16(hfc->ctrl_buff[hfc->ctrl_out_idx].hfc_reg);
237 hfc->ctrl_write.wValue =
238 cpu_to_le16(hfc->ctrl_buff[hfc->ctrl_out_idx].reg_val);
239
240 usb_submit_urb(hfc->ctrl_urb, GFP_ATOMIC); /* start transfer */
241 }
242 } /* ctrl_start_transfer */
243
244 /************************************/
245 /* queue a control transfer request */
246 /* return 0 on success. */
247 /************************************/
248 static int
249 queue_control_request(hfcusb_data * hfc, __u8 reg, __u8 val, int action)
250 {
251 ctrl_buft *buf;
252
253 if (hfc->ctrl_cnt >= HFC_CTRL_BUFSIZE)
254 return (1); /* no space left */
255 buf = &hfc->ctrl_buff[hfc->ctrl_in_idx]; /* pointer to new index */
256 buf->hfc_reg = reg;
257 buf->reg_val = val;
258 buf->action = action;
259 if (++hfc->ctrl_in_idx >= HFC_CTRL_BUFSIZE)
260 hfc->ctrl_in_idx = 0; /* pointer wrap */
261 if (++hfc->ctrl_cnt == 1)
262 ctrl_start_transfer(hfc);
263 return (0);
264 } /* queue_control_request */
265
266 static int
267 control_action_handler(hfcusb_data * hfc, int reg, int val, int action)
268 {
269 if (!action)
270 return (1); /* no action defined */
271 return (0);
272 }
273
274 /***************************************************************/
275 /* control completion routine handling background control cmds */
276 /***************************************************************/
277 static void
278 ctrl_complete(struct urb *urb)
279 {
280 hfcusb_data *hfc = (hfcusb_data *) urb->context;
281 ctrl_buft *buf;
282
283 urb->dev = hfc->dev;
284 if (hfc->ctrl_cnt) {
285 buf = &hfc->ctrl_buff[hfc->ctrl_out_idx];
286 control_action_handler(hfc, buf->hfc_reg, buf->reg_val,
287 buf->action);
288
289 hfc->ctrl_cnt--; /* decrement actual count */
290 if (++hfc->ctrl_out_idx >= HFC_CTRL_BUFSIZE)
291 hfc->ctrl_out_idx = 0; /* pointer wrap */
292
293 ctrl_start_transfer(hfc); /* start next transfer */
294 }
295 } /* ctrl_complete */
296
297 /***************************************************/
298 /* write led data to auxport & invert if necessary */
299 /***************************************************/
300 static void
301 write_led(hfcusb_data * hfc, __u8 led_state)
302 {
303 if (led_state != hfc->old_led_state) {
304 hfc->old_led_state = led_state;
305 queue_control_request(hfc, HFCUSB_P_DATA, led_state, 1);
306 }
307 }
308
309 /**************************/
310 /* handle LED bits */
311 /**************************/
312 static void
313 set_led_bit(hfcusb_data * hfc, signed short led_bits, int unset)
314 {
315 if (unset) {
316 if (led_bits < 0)
317 hfc->led_state |= abs(led_bits);
318 else
319 hfc->led_state &= ~led_bits;
320 } else {
321 if (led_bits < 0)
322 hfc->led_state &= ~abs(led_bits);
323 else
324 hfc->led_state |= led_bits;
325 }
326 }
327
328 /**************************/
329 /* handle LED requests */
330 /**************************/
331 static void
332 handle_led(hfcusb_data * hfc, int event)
333 {
334 hfcsusb_vdata *driver_info =
335 (hfcsusb_vdata *) hfcusb_idtab[hfc->vend_idx].driver_info;
336
337 /* if no scheme -> no LED action */
338 if (driver_info->led_scheme == LED_OFF)
339 return;
340
341 switch (event) {
342 case LED_POWER_ON:
343 set_led_bit(hfc, driver_info->led_bits[0],
344 0);
345 set_led_bit(hfc, driver_info->led_bits[1],
346 1);
347 set_led_bit(hfc, driver_info->led_bits[2],
348 1);
349 set_led_bit(hfc, driver_info->led_bits[3],
350 1);
351 break;
352 case LED_POWER_OFF: /* no Power off handling */
353 break;
354 case LED_S0_ON:
355 set_led_bit(hfc, driver_info->led_bits[1],
356 0);
357 break;
358 case LED_S0_OFF:
359 set_led_bit(hfc, driver_info->led_bits[1],
360 1);
361 break;
362 case LED_B1_ON:
363 set_led_bit(hfc, driver_info->led_bits[2],
364 0);
365 break;
366 case LED_B1_OFF:
367 set_led_bit(hfc, driver_info->led_bits[2],
368 1);
369 break;
370 case LED_B2_ON:
371 set_led_bit(hfc, driver_info->led_bits[3],
372 0);
373 break;
374 case LED_B2_OFF:
375 set_led_bit(hfc, driver_info->led_bits[3],
376 1);
377 break;
378 }
379 write_led(hfc, hfc->led_state);
380 }
381
382 /********************************/
383 /* called when timer t3 expires */
384 /********************************/
385 static void
386 l1_timer_expire_t3(hfcusb_data * hfc)
387 {
388 hfc->d_if.ifc.l1l2(&hfc->d_if.ifc, PH_DEACTIVATE | INDICATION,
389 NULL);
390 #ifdef CONFIG_HISAX_DEBUG
391 DBG(ISDN_DBG,
392 "HFC-S USB: PH_DEACTIVATE | INDICATION sent (T3 expire)");
393 #endif
394 hfc->l1_activated = false;
395 handle_led(hfc, LED_S0_OFF);
396 /* deactivate : */
397 queue_control_request(hfc, HFCUSB_STATES, 0x10, 1);
398 queue_control_request(hfc, HFCUSB_STATES, 3, 1);
399 }
400
401 /********************************/
402 /* called when timer t4 expires */
403 /********************************/
404 static void
405 l1_timer_expire_t4(hfcusb_data * hfc)
406 {
407 hfc->d_if.ifc.l1l2(&hfc->d_if.ifc, PH_DEACTIVATE | INDICATION,
408 NULL);
409 #ifdef CONFIG_HISAX_DEBUG
410 DBG(ISDN_DBG,
411 "HFC-S USB: PH_DEACTIVATE | INDICATION sent (T4 expire)");
412 #endif
413 hfc->l1_activated = false;
414 handle_led(hfc, LED_S0_OFF);
415 }
416
417 /*****************************/
418 /* handle S0 state changes */
419 /*****************************/
420 static void
421 state_handler(hfcusb_data * hfc, __u8 state)
422 {
423 __u8 old_state;
424
425 old_state = hfc->l1_state;
426 if (state == old_state || state < 1 || state > 8)
427 return;
428
429 #ifdef CONFIG_HISAX_DEBUG
430 DBG(ISDN_DBG, "HFC-S USB: new S0 state:%d old_state:%d", state,
431 old_state);
432 #endif
433 if (state < 4 || state == 7 || state == 8) {
434 if (timer_pending(&hfc->t3_timer))
435 del_timer(&hfc->t3_timer);
436 #ifdef CONFIG_HISAX_DEBUG
437 DBG(ISDN_DBG, "HFC-S USB: T3 deactivated");
438 #endif
439 }
440 if (state >= 7) {
441 if (timer_pending(&hfc->t4_timer))
442 del_timer(&hfc->t4_timer);
443 #ifdef CONFIG_HISAX_DEBUG
444 DBG(ISDN_DBG, "HFC-S USB: T4 deactivated");
445 #endif
446 }
447
448 if (state == 7 && !hfc->l1_activated) {
449 hfc->d_if.ifc.l1l2(&hfc->d_if.ifc,
450 PH_ACTIVATE | INDICATION, NULL);
451 #ifdef CONFIG_HISAX_DEBUG
452 DBG(ISDN_DBG, "HFC-S USB: PH_ACTIVATE | INDICATION sent");
453 #endif
454 hfc->l1_activated = true;
455 handle_led(hfc, LED_S0_ON);
456 } else if (state <= 3 /* && activated */ ) {
457 if (old_state == 7 || old_state == 8) {
458 #ifdef CONFIG_HISAX_DEBUG
459 DBG(ISDN_DBG, "HFC-S USB: T4 activated");
460 #endif
461 if (!timer_pending(&hfc->t4_timer)) {
462 hfc->t4_timer.expires =
463 jiffies + (HFC_TIMER_T4 * HZ) / 1000;
464 add_timer(&hfc->t4_timer);
465 }
466 } else {
467 hfc->d_if.ifc.l1l2(&hfc->d_if.ifc,
468 PH_DEACTIVATE | INDICATION,
469 NULL);
470 #ifdef CONFIG_HISAX_DEBUG
471 DBG(ISDN_DBG,
472 "HFC-S USB: PH_DEACTIVATE | INDICATION sent");
473 #endif
474 hfc->l1_activated = false;
475 handle_led(hfc, LED_S0_OFF);
476 }
477 }
478 hfc->l1_state = state;
479 }
480
481 /* prepare iso urb */
482 static void
483 fill_isoc_urb(struct urb *urb, struct usb_device *dev, unsigned int pipe,
484 void *buf, int num_packets, int packet_size, int interval,
485 usb_complete_t complete, void *context)
486 {
487 int k;
488
489 spin_lock_init(&urb->lock);
490 urb->dev = dev;
491 urb->pipe = pipe;
492 urb->complete = complete;
493 urb->number_of_packets = num_packets;
494 urb->transfer_buffer_length = packet_size * num_packets;
495 urb->context = context;
496 urb->transfer_buffer = buf;
497 urb->transfer_flags = URB_ISO_ASAP;
498 urb->actual_length = 0;
499 urb->interval = interval;
500 for (k = 0; k < num_packets; k++) {
501 urb->iso_frame_desc[k].offset = packet_size * k;
502 urb->iso_frame_desc[k].length = packet_size;
503 urb->iso_frame_desc[k].actual_length = 0;
504 }
505 }
506
507 /* allocs urbs and start isoc transfer with two pending urbs to avoid
508 gaps in the transfer chain */
509 static int
510 start_isoc_chain(usb_fifo * fifo, int num_packets_per_urb,
511 usb_complete_t complete, int packet_size)
512 {
513 int i, k, errcode;
514
515 printk(KERN_INFO "HFC-S USB: starting ISO-chain for Fifo %i\n",
516 fifo->fifonum);
517
518 /* allocate Memory for Iso out Urbs */
519 for (i = 0; i < 2; i++) {
520 if (!(fifo->iso[i].purb)) {
521 fifo->iso[i].purb =
522 usb_alloc_urb(num_packets_per_urb, GFP_KERNEL);
523 if (!(fifo->iso[i].purb)) {
524 printk(KERN_INFO
525 "alloc urb for fifo %i failed!!!",
526 fifo->fifonum);
527 }
528 fifo->iso[i].owner_fifo = (struct usb_fifo *) fifo;
529
530 /* Init the first iso */
531 if (ISO_BUFFER_SIZE >=
532 (fifo->usb_packet_maxlen *
533 num_packets_per_urb)) {
534 fill_isoc_urb(fifo->iso[i].purb,
535 fifo->hfc->dev, fifo->pipe,
536 fifo->iso[i].buffer,
537 num_packets_per_urb,
538 fifo->usb_packet_maxlen,
539 fifo->intervall, complete,
540 &fifo->iso[i]);
541 memset(fifo->iso[i].buffer, 0,
542 sizeof(fifo->iso[i].buffer));
543 /* defining packet delimeters in fifo->buffer */
544 for (k = 0; k < num_packets_per_urb; k++) {
545 fifo->iso[i].purb->
546 iso_frame_desc[k].offset =
547 k * packet_size;
548 fifo->iso[i].purb->
549 iso_frame_desc[k].length =
550 packet_size;
551 }
552 } else {
553 printk(KERN_INFO
554 "HFC-S USB: ISO Buffer size to small!\n");
555 }
556 }
557 fifo->bit_line = BITLINE_INF;
558
559 errcode = usb_submit_urb(fifo->iso[i].purb, GFP_KERNEL);
560 fifo->active = (errcode >= 0) ? 1 : 0;
561 if (errcode < 0) {
562 printk(KERN_INFO "HFC-S USB: %s URB nr:%d\n",
563 symbolic(urb_errlist, errcode), i);
564 };
565 }
566 return (fifo->active);
567 }
568
569 /* stops running iso chain and frees their pending urbs */
570 static void
571 stop_isoc_chain(usb_fifo * fifo)
572 {
573 int i;
574
575 for (i = 0; i < 2; i++) {
576 if (fifo->iso[i].purb) {
577 #ifdef CONFIG_HISAX_DEBUG
578 DBG(USB_DBG,
579 "HFC-S USB: Stopping iso chain for fifo %i.%i",
580 fifo->fifonum, i);
581 #endif
582 usb_unlink_urb(fifo->iso[i].purb);
583 usb_free_urb(fifo->iso[i].purb);
584 fifo->iso[i].purb = NULL;
585 }
586 }
587 if (fifo->urb) {
588 usb_unlink_urb(fifo->urb);
589 usb_free_urb(fifo->urb);
590 fifo->urb = NULL;
591 }
592 fifo->active = 0;
593 }
594
595 /* defines how much ISO packets are handled in one URB */
596 static int iso_packets[8] =
597 { ISOC_PACKETS_B, ISOC_PACKETS_B, ISOC_PACKETS_B, ISOC_PACKETS_B,
598 ISOC_PACKETS_D, ISOC_PACKETS_D, ISOC_PACKETS_D, ISOC_PACKETS_D
599 };
600
601 /*****************************************************/
602 /* transmit completion routine for all ISO tx fifos */
603 /*****************************************************/
604 static void
605 tx_iso_complete(struct urb *urb)
606 {
607 iso_urb_struct *context_iso_urb = (iso_urb_struct *) urb->context;
608 usb_fifo *fifo = context_iso_urb->owner_fifo;
609 hfcusb_data *hfc = fifo->hfc;
610 int k, tx_offset, num_isoc_packets, sink, len, current_len,
611 errcode;
612 int frame_complete, transp_mode, fifon, status;
613 __u8 threshbit;
614 __u8 threshtable[8] = { 1, 2, 4, 8, 0x10, 0x20, 0x40, 0x80 };
615
616 fifon = fifo->fifonum;
617 status = urb->status;
618
619 tx_offset = 0;
620
621 if (fifo->active && !status) {
622 transp_mode = 0;
623 if (fifon < 4 && hfc->b_mode[fifon / 2] == L1_MODE_TRANS)
624 transp_mode = true;
625
626 /* is FifoFull-threshold set for our channel? */
627 threshbit = threshtable[fifon] & hfc->threshold_mask;
628 num_isoc_packets = iso_packets[fifon];
629
630 /* predict dataflow to avoid fifo overflow */
631 if (fifon >= HFCUSB_D_TX) {
632 sink = (threshbit) ? SINK_DMIN : SINK_DMAX;
633 } else {
634 sink = (threshbit) ? SINK_MIN : SINK_MAX;
635 }
636 fill_isoc_urb(urb, fifo->hfc->dev, fifo->pipe,
637 context_iso_urb->buffer, num_isoc_packets,
638 fifo->usb_packet_maxlen, fifo->intervall,
639 tx_iso_complete, urb->context);
640 memset(context_iso_urb->buffer, 0,
641 sizeof(context_iso_urb->buffer));
642 frame_complete = false;
643 /* Generate next Iso Packets */
644 for (k = 0; k < num_isoc_packets; ++k) {
645 if (fifo->skbuff) {
646 len = fifo->skbuff->len;
647 /* we lower data margin every msec */
648 fifo->bit_line -= sink;
649 current_len = (0 - fifo->bit_line) / 8;
650 /* maximum 15 byte for every ISO packet makes our life easier */
651 if (current_len > 14)
652 current_len = 14;
653 current_len =
654 (len <=
655 current_len) ? len : current_len;
656 /* how much bit do we put on the line? */
657 fifo->bit_line += current_len * 8;
658
659 context_iso_urb->buffer[tx_offset] = 0;
660 if (current_len == len) {
661 if (!transp_mode) {
662 /* here frame completion */
663 context_iso_urb->
664 buffer[tx_offset] = 1;
665 /* add 2 byte flags and 16bit CRC at end of ISDN frame */
666 fifo->bit_line += 32;
667 }
668 frame_complete = true;
669 }
670
671 memcpy(context_iso_urb->buffer +
672 tx_offset + 1, fifo->skbuff->data,
673 current_len);
674 skb_pull(fifo->skbuff, current_len);
675
676 /* define packet delimeters within the URB buffer */
677 urb->iso_frame_desc[k].offset = tx_offset;
678 urb->iso_frame_desc[k].length =
679 current_len + 1;
680
681 tx_offset += (current_len + 1);
682 } else {
683 urb->iso_frame_desc[k].offset =
684 tx_offset++;
685
686 urb->iso_frame_desc[k].length = 1;
687 fifo->bit_line -= sink; /* we lower data margin every msec */
688
689 if (fifo->bit_line < BITLINE_INF) {
690 fifo->bit_line = BITLINE_INF;
691 }
692 }
693
694 if (frame_complete) {
695 fifo->delete_flg = true;
696 fifo->hif->l1l2(fifo->hif,
697 PH_DATA | CONFIRM,
698 (void *) (unsigned long) fifo->skbuff->
699 truesize);
700 if (fifo->skbuff && fifo->delete_flg) {
701 dev_kfree_skb_any(fifo->skbuff);
702 fifo->skbuff = NULL;
703 fifo->delete_flg = false;
704 }
705 frame_complete = false;
706 }
707 }
708 errcode = usb_submit_urb(urb, GFP_ATOMIC);
709 if (errcode < 0) {
710 printk(KERN_INFO
711 "HFC-S USB: error submitting ISO URB: %d \n",
712 errcode);
713 }
714 } else {
715 if (status && !hfc->disc_flag) {
716 printk(KERN_INFO
717 "HFC-S USB: tx_iso_complete : urb->status %s (%i), fifonum=%d\n",
718 symbolic(urb_errlist, status), status,
719 fifon);
720 }
721 }
722 } /* tx_iso_complete */
723
724 /*****************************************************/
725 /* receive completion routine for all ISO tx fifos */
726 /*****************************************************/
727 static void
728 rx_iso_complete(struct urb *urb)
729 {
730 iso_urb_struct *context_iso_urb = (iso_urb_struct *) urb->context;
731 usb_fifo *fifo = context_iso_urb->owner_fifo;
732 hfcusb_data *hfc = fifo->hfc;
733 int k, len, errcode, offset, num_isoc_packets, fifon, maxlen,
734 status;
735 unsigned int iso_status;
736 __u8 *buf;
737 static __u8 eof[8];
738 #ifdef CONFIG_HISAX_DEBUG
739 __u8 i;
740 #endif
741
742 fifon = fifo->fifonum;
743 status = urb->status;
744
745 if (urb->status == -EOVERFLOW) {
746 #ifdef CONFIG_HISAX_DEBUG
747 DBG(USB_DBG,
748 "HFC-USB: ignoring USB DATAOVERRUN for fifo %i \n",
749 fifon);
750 #endif
751 status = 0;
752 }
753 if (fifo->active && !status) {
754 num_isoc_packets = iso_packets[fifon];
755 maxlen = fifo->usb_packet_maxlen;
756 for (k = 0; k < num_isoc_packets; ++k) {
757 len = urb->iso_frame_desc[k].actual_length;
758 offset = urb->iso_frame_desc[k].offset;
759 buf = context_iso_urb->buffer + offset;
760 iso_status = urb->iso_frame_desc[k].status;
761 #ifdef CONFIG_HISAX_DEBUG
762 if (iso_status && !hfc->disc_flag)
763 DBG(USB_DBG,
764 "HFC-S USB: ISO packet failure - status:%x",
765 iso_status);
766
767 if ((fifon == 5) && (debug > 1)) {
768 printk(KERN_INFO
769 "HFC-S USB: ISO-D-RX lst_urblen:%2d "
770 "act_urblen:%2d max-urblen:%2d "
771 "EOF:0x%0x DATA: ",
772 fifo->last_urblen, len, maxlen,
773 eof[5]);
774 for (i = 0; i < len; i++)
775 printk("%.2x ", buf[i]);
776 printk("\n");
777 }
778 #endif
779 if (fifo->last_urblen != maxlen) {
780 /* the threshold mask is in the 2nd status byte */
781 hfc->threshold_mask = buf[1];
782 /* care for L1 state only for D-Channel
783 to avoid overlapped iso completions */
784 if (fifon == 5) {
785 /* the S0 state is in the upper half
786 of the 1st status byte */
787 state_handler(hfc, buf[0] >> 4);
788 }
789 eof[fifon] = buf[0] & 1;
790 if (len > 2)
791 collect_rx_frame(fifo, buf + 2,
792 len - 2,
793 (len <
794 maxlen) ?
795 eof[fifon] : 0);
796 } else {
797 collect_rx_frame(fifo, buf, len,
798 (len <
799 maxlen) ? eof[fifon] :
800 0);
801 }
802 fifo->last_urblen = len;
803 }
804
805 fill_isoc_urb(urb, fifo->hfc->dev, fifo->pipe,
806 context_iso_urb->buffer, num_isoc_packets,
807 fifo->usb_packet_maxlen, fifo->intervall,
808 rx_iso_complete, urb->context);
809 errcode = usb_submit_urb(urb, GFP_ATOMIC);
810 if (errcode < 0) {
811 printk(KERN_INFO
812 "HFC-S USB: error submitting ISO URB: %d \n",
813 errcode);
814 }
815 } else {
816 if (status && !hfc->disc_flag) {
817 printk(KERN_INFO
818 "HFC-S USB: rx_iso_complete : "
819 "urb->status %d, fifonum %d\n",
820 status, fifon);
821 }
822 }
823 } /* rx_iso_complete */
824
825 /*****************************************************/
826 /* collect data from interrupt or isochron in */
827 /*****************************************************/
828 static void
829 collect_rx_frame(usb_fifo * fifo, __u8 * data, int len, int finish)
830 {
831 hfcusb_data *hfc = fifo->hfc;
832 int transp_mode, fifon;
833 #ifdef CONFIG_HISAX_DEBUG
834 int i;
835 #endif
836 fifon = fifo->fifonum;
837 transp_mode = 0;
838 if (fifon < 4 && hfc->b_mode[fifon / 2] == L1_MODE_TRANS)
839 transp_mode = true;
840
841 if (!fifo->skbuff) {
842 fifo->skbuff = dev_alloc_skb(fifo->max_size + 3);
843 if (!fifo->skbuff) {
844 printk(KERN_INFO
845 "HFC-S USB: cannot allocate buffer (dev_alloc_skb) fifo:%d\n",
846 fifon);
847 return;
848 }
849 }
850 if (len) {
851 if (fifo->skbuff->len + len < fifo->max_size) {
852 memcpy(skb_put(fifo->skbuff, len), data, len);
853 } else {
854 #ifdef CONFIG_HISAX_DEBUG
855 printk(KERN_INFO "HFC-S USB: ");
856 for (i = 0; i < 15; i++)
857 printk("%.2x ",
858 fifo->skbuff->data[fifo->skbuff->
859 len - 15 + i]);
860 printk("\n");
861 #endif
862 printk(KERN_INFO
863 "HCF-USB: got frame exceeded fifo->max_size:%d on fifo:%d\n",
864 fifo->max_size, fifon);
865 }
866 }
867 if (transp_mode && fifo->skbuff->len >= 128) {
868 fifo->hif->l1l2(fifo->hif, PH_DATA | INDICATION,
869 fifo->skbuff);
870 fifo->skbuff = NULL;
871 return;
872 }
873 /* we have a complete hdlc packet */
874 if (finish) {
875 if ((!fifo->skbuff->data[fifo->skbuff->len - 1])
876 && (fifo->skbuff->len > 3)) {
877 /* remove CRC & status */
878 skb_trim(fifo->skbuff, fifo->skbuff->len - 3);
879 if (fifon == HFCUSB_PCM_RX) {
880 fifo->hif->l1l2(fifo->hif,
881 PH_DATA_E | INDICATION,
882 fifo->skbuff);
883 } else
884 fifo->hif->l1l2(fifo->hif,
885 PH_DATA | INDICATION,
886 fifo->skbuff);
887 fifo->skbuff = NULL; /* buffer was freed from upper layer */
888 } else {
889 if (fifo->skbuff->len > 3) {
890 printk(KERN_INFO
891 "HFC-S USB: got frame %d bytes but CRC ERROR on fifo:%d!!!\n",
892 fifo->skbuff->len, fifon);
893 #ifdef CONFIG_HISAX_DEBUG
894 if (debug > 1) {
895 printk(KERN_INFO "HFC-S USB: ");
896 for (i = 0; i < 15; i++)
897 printk("%.2x ",
898 fifo->skbuff->
899 data[fifo->skbuff->
900 len - 15 + i]);
901 printk("\n");
902 }
903 #endif
904 }
905 #ifdef CONFIG_HISAX_DEBUG
906 else {
907 printk(KERN_INFO
908 "HFC-S USB: frame to small (%d bytes)!!!\n",
909 fifo->skbuff->len);
910 }
911 #endif
912 skb_trim(fifo->skbuff, 0);
913 }
914 }
915 }
916
917 /***********************************************/
918 /* receive completion routine for all rx fifos */
919 /***********************************************/
920 static void
921 rx_complete(struct urb *urb)
922 {
923 int len;
924 int status;
925 __u8 *buf, maxlen, fifon;
926 usb_fifo *fifo = (usb_fifo *) urb->context;
927 hfcusb_data *hfc = fifo->hfc;
928 static __u8 eof[8];
929 #ifdef CONFIG_HISAX_DEBUG
930 __u8 i;
931 #endif
932
933 urb->dev = hfc->dev; /* security init */
934
935 fifon = fifo->fifonum;
936 if ((!fifo->active) || (urb->status)) {
937 #ifdef CONFIG_HISAX_DEBUG
938 DBG(USB_DBG, "HFC-S USB: RX-Fifo %i is going down (%i)",
939 fifon, urb->status);
940 #endif
941 fifo->urb->interval = 0; /* cancel automatic rescheduling */
942 if (fifo->skbuff) {
943 dev_kfree_skb_any(fifo->skbuff);
944 fifo->skbuff = NULL;
945 }
946 return;
947 }
948 len = urb->actual_length;
949 buf = fifo->buffer;
950 maxlen = fifo->usb_packet_maxlen;
951
952 #ifdef CONFIG_HISAX_DEBUG
953 if ((fifon == 5) && (debug > 1)) {
954 printk(KERN_INFO
955 "HFC-S USB: INT-D-RX lst_urblen:%2d act_urblen:%2d max-urblen:%2d EOF:0x%0x DATA: ",
956 fifo->last_urblen, len, maxlen, eof[5]);
957 for (i = 0; i < len; i++)
958 printk("%.2x ", buf[i]);
959 printk("\n");
960 }
961 #endif
962
963 if (fifo->last_urblen != fifo->usb_packet_maxlen) {
964 /* the threshold mask is in the 2nd status byte */
965 hfc->threshold_mask = buf[1];
966 /* the S0 state is in the upper half of the 1st status byte */
967 state_handler(hfc, buf[0] >> 4);
968 eof[fifon] = buf[0] & 1;
969 /* if we have more than the 2 status bytes -> collect data */
970 if (len > 2)
971 collect_rx_frame(fifo, buf + 2,
972 urb->actual_length - 2,
973 (len < maxlen) ? eof[fifon] : 0);
974 } else {
975 collect_rx_frame(fifo, buf, urb->actual_length,
976 (len < maxlen) ? eof[fifon] : 0);
977 }
978 fifo->last_urblen = urb->actual_length;
979 status = usb_submit_urb(urb, GFP_ATOMIC);
980 if (status) {
981 printk(KERN_INFO
982 "HFC-S USB: error resubmitting URN at rx_complete...\n");
983 }
984 } /* rx_complete */
985
986 /***************************************************/
987 /* start the interrupt transfer for the given fifo */
988 /***************************************************/
989 static void
990 start_int_fifo(usb_fifo * fifo)
991 {
992 int errcode;
993
994 printk(KERN_INFO "HFC-S USB: starting intr IN fifo:%d\n",
995 fifo->fifonum);
996
997 if (!fifo->urb) {
998 fifo->urb = usb_alloc_urb(0, GFP_KERNEL);
999 if (!fifo->urb)
1000 return;
1001 }
1002 usb_fill_int_urb(fifo->urb, fifo->hfc->dev, fifo->pipe,
1003 fifo->buffer, fifo->usb_packet_maxlen,
1004 rx_complete, fifo, fifo->intervall);
1005 fifo->active = 1; /* must be marked active */
1006 errcode = usb_submit_urb(fifo->urb, GFP_KERNEL);
1007 if (errcode) {
1008 printk(KERN_INFO
1009 "HFC-S USB: submit URB error(start_int_info): status:%i\n",
1010 errcode);
1011 fifo->active = 0;
1012 fifo->skbuff = NULL;
1013 }
1014 } /* start_int_fifo */
1015
1016 /*****************************/
1017 /* set the B-channel mode */
1018 /*****************************/
1019 static void
1020 set_hfcmode(hfcusb_data * hfc, int channel, int mode)
1021 {
1022 __u8 val, idx_table[2] = { 0, 2 };
1023
1024 if (hfc->disc_flag) {
1025 return;
1026 }
1027 #ifdef CONFIG_HISAX_DEBUG
1028 DBG(ISDN_DBG, "HFC-S USB: setting channel %d to mode %d", channel,
1029 mode);
1030 #endif
1031 hfc->b_mode[channel] = mode;
1032
1033 /* setup CON_HDLC */
1034 val = 0;
1035 if (mode != L1_MODE_NULL)
1036 val = 8; /* enable fifo? */
1037 if (mode == L1_MODE_TRANS)
1038 val |= 2; /* set transparent bit */
1039
1040 /* set FIFO to transmit register */
1041 queue_control_request(hfc, HFCUSB_FIFO, idx_table[channel], 1);
1042 queue_control_request(hfc, HFCUSB_CON_HDLC, val, 1);
1043 /* reset fifo */
1044 queue_control_request(hfc, HFCUSB_INC_RES_F, 2, 1);
1045 /* set FIFO to receive register */
1046 queue_control_request(hfc, HFCUSB_FIFO, idx_table[channel] + 1, 1);
1047 queue_control_request(hfc, HFCUSB_CON_HDLC, val, 1);
1048 /* reset fifo */
1049 queue_control_request(hfc, HFCUSB_INC_RES_F, 2, 1);
1050
1051 val = 0x40;
1052 if (hfc->b_mode[0])
1053 val |= 1;
1054 if (hfc->b_mode[1])
1055 val |= 2;
1056 queue_control_request(hfc, HFCUSB_SCTRL, val, 1);
1057
1058 val = 0;
1059 if (hfc->b_mode[0])
1060 val |= 1;
1061 if (hfc->b_mode[1])
1062 val |= 2;
1063 queue_control_request(hfc, HFCUSB_SCTRL_R, val, 1);
1064
1065 if (mode == L1_MODE_NULL) {
1066 if (channel)
1067 handle_led(hfc, LED_B2_OFF);
1068 else
1069 handle_led(hfc, LED_B1_OFF);
1070 } else {
1071 if (channel)
1072 handle_led(hfc, LED_B2_ON);
1073 else
1074 handle_led(hfc, LED_B1_ON);
1075 }
1076 }
1077
1078 static void
1079 hfc_usb_l2l1(struct hisax_if *my_hisax_if, int pr, void *arg)
1080 {
1081 usb_fifo *fifo = my_hisax_if->priv;
1082 hfcusb_data *hfc = fifo->hfc;
1083
1084 switch (pr) {
1085 case PH_ACTIVATE | REQUEST:
1086 if (fifo->fifonum == HFCUSB_D_TX) {
1087 #ifdef CONFIG_HISAX_DEBUG
1088 DBG(ISDN_DBG,
1089 "HFC_USB: hfc_usb_d_l2l1 D-chan: PH_ACTIVATE | REQUEST");
1090 #endif
1091 if (hfc->l1_state != 3
1092 && hfc->l1_state != 7) {
1093 hfc->d_if.ifc.l1l2(&hfc->d_if.ifc,
1094 PH_DEACTIVATE |
1095 INDICATION,
1096 NULL);
1097 #ifdef CONFIG_HISAX_DEBUG
1098 DBG(ISDN_DBG,
1099 "HFC-S USB: PH_DEACTIVATE | INDICATION sent (not state 3 or 7)");
1100 #endif
1101 } else {
1102 if (hfc->l1_state == 7) { /* l1 already active */
1103 hfc->d_if.ifc.l1l2(&hfc->
1104 d_if.
1105 ifc,
1106 PH_ACTIVATE
1107 |
1108 INDICATION,
1109 NULL);
1110 #ifdef CONFIG_HISAX_DEBUG
1111 DBG(ISDN_DBG,
1112 "HFC-S USB: PH_ACTIVATE | INDICATION sent again ;)");
1113 #endif
1114 } else {
1115 /* force sending sending INFO1 */
1116 queue_control_request(hfc,
1117 HFCUSB_STATES,
1118 0x14,
1119 1);
1120 mdelay(1);
1121 /* start l1 activation */
1122 queue_control_request(hfc,
1123 HFCUSB_STATES,
1124 0x04,
1125 1);
1126 if (!timer_pending
1127 (&hfc->t3_timer)) {
1128 hfc->t3_timer.
1129 expires =
1130 jiffies +
1131 (HFC_TIMER_T3 *
1132 HZ) / 1000;
1133 add_timer(&hfc->
1134 t3_timer);
1135 }
1136 }
1137 }
1138 } else {
1139 #ifdef CONFIG_HISAX_DEBUG
1140 DBG(ISDN_DBG,
1141 "HFC_USB: hfc_usb_d_l2l1 Bx-chan: PH_ACTIVATE | REQUEST");
1142 #endif
1143 set_hfcmode(hfc,
1144 (fifo->fifonum ==
1145 HFCUSB_B1_TX) ? 0 : 1,
1146 (long) arg);
1147 fifo->hif->l1l2(fifo->hif,
1148 PH_ACTIVATE | INDICATION,
1149 NULL);
1150 }
1151 break;
1152 case PH_DEACTIVATE | REQUEST:
1153 if (fifo->fifonum == HFCUSB_D_TX) {
1154 #ifdef CONFIG_HISAX_DEBUG
1155 DBG(ISDN_DBG,
1156 "HFC_USB: hfc_usb_d_l2l1 D-chan: PH_DEACTIVATE | REQUEST");
1157 #endif
1158 printk(KERN_INFO
1159 "HFC-S USB: ISDN TE device should not deativate...\n");
1160 } else {
1161 #ifdef CONFIG_HISAX_DEBUG
1162 DBG(ISDN_DBG,
1163 "HFC_USB: hfc_usb_d_l2l1 Bx-chan: PH_DEACTIVATE | REQUEST");
1164 #endif
1165 set_hfcmode(hfc,
1166 (fifo->fifonum ==
1167 HFCUSB_B1_TX) ? 0 : 1,
1168 (int) L1_MODE_NULL);
1169 fifo->hif->l1l2(fifo->hif,
1170 PH_DEACTIVATE | INDICATION,
1171 NULL);
1172 }
1173 break;
1174 case PH_DATA | REQUEST:
1175 if (fifo->skbuff && fifo->delete_flg) {
1176 dev_kfree_skb_any(fifo->skbuff);
1177 fifo->skbuff = NULL;
1178 fifo->delete_flg = false;
1179 }
1180 fifo->skbuff = arg; /* we have a new buffer */
1181 break;
1182 default:
1183 printk(KERN_INFO
1184 "HFC_USB: hfc_usb_d_l2l1: unkown state : %#x\n",
1185 pr);
1186 break;
1187 }
1188 }
1189
1190 /***************************************************************************/
1191 /* usb_init is called once when a new matching device is detected to setup */
1192 /* main parameters. It registers the driver at the main hisax module. */
1193 /* on success 0 is returned. */
1194 /***************************************************************************/
1195 static int
1196 usb_init(hfcusb_data * hfc)
1197 {
1198 usb_fifo *fifo;
1199 int i, err;
1200 u_char b;
1201 struct hisax_b_if *p_b_if[2];
1202
1203 /* check the chip id */
1204 if (read_usb(hfc, HFCUSB_CHIP_ID, &b) != 1) {
1205 printk(KERN_INFO "HFC-USB: cannot read chip id\n");
1206 return (1);
1207 }
1208 if (b != HFCUSB_CHIPID) {
1209 printk(KERN_INFO "HFC-S USB: Invalid chip id 0x%02x\n", b);
1210 return (1);
1211 }
1212
1213 /* first set the needed config, interface and alternate */
1214 err = usb_set_interface(hfc->dev, hfc->if_used, hfc->alt_used);
1215
1216 /* do Chip reset */
1217 write_usb(hfc, HFCUSB_CIRM, 8);
1218 /* aux = output, reset off */
1219 write_usb(hfc, HFCUSB_CIRM, 0x10);
1220
1221 /* set USB_SIZE to match the the wMaxPacketSize for INT or BULK transfers */
1222 write_usb(hfc, HFCUSB_USB_SIZE,
1223 (hfc->packet_size / 8) | ((hfc->packet_size / 8) << 4));
1224
1225 /* set USB_SIZE_I to match the the wMaxPacketSize for ISO transfers */
1226 write_usb(hfc, HFCUSB_USB_SIZE_I, hfc->iso_packet_size);
1227
1228 /* enable PCM/GCI master mode */
1229 write_usb(hfc, HFCUSB_MST_MODE1, 0); /* set default values */
1230 write_usb(hfc, HFCUSB_MST_MODE0, 1); /* enable master mode */
1231
1232 /* init the fifos */
1233 write_usb(hfc, HFCUSB_F_THRES,
1234 (HFCUSB_TX_THRESHOLD /
1235 8) | ((HFCUSB_RX_THRESHOLD / 8) << 4));
1236
1237 fifo = hfc->fifos;
1238 for (i = 0; i < HFCUSB_NUM_FIFOS; i++) {
1239 write_usb(hfc, HFCUSB_FIFO, i); /* select the desired fifo */
1240 fifo[i].skbuff = NULL; /* init buffer pointer */
1241 fifo[i].max_size =
1242 (i <= HFCUSB_B2_RX) ? MAX_BCH_SIZE : MAX_DFRAME_LEN;
1243 fifo[i].last_urblen = 0;
1244 /* set 2 bit for D- & E-channel */
1245 write_usb(hfc, HFCUSB_HDLC_PAR,
1246 ((i <= HFCUSB_B2_RX) ? 0 : 2));
1247 /* rx hdlc, enable IFF for D-channel */
1248 write_usb(hfc, HFCUSB_CON_HDLC,
1249 ((i == HFCUSB_D_TX) ? 0x09 : 0x08));
1250 write_usb(hfc, HFCUSB_INC_RES_F, 2); /* reset the fifo */
1251 }
1252
1253 write_usb(hfc, HFCUSB_CLKDEL, 0x0f); /* clock delay value */
1254 write_usb(hfc, HFCUSB_STATES, 3 | 0x10); /* set deactivated mode */
1255 write_usb(hfc, HFCUSB_STATES, 3); /* enable state machine */
1256
1257 write_usb(hfc, HFCUSB_SCTRL_R, 0); /* disable both B receivers */
1258 write_usb(hfc, HFCUSB_SCTRL, 0x40); /* disable B transmitters + capacitive mode */
1259
1260 /* set both B-channel to not connected */
1261 hfc->b_mode[0] = L1_MODE_NULL;
1262 hfc->b_mode[1] = L1_MODE_NULL;
1263
1264 hfc->l1_activated = false;
1265 hfc->disc_flag = false;
1266 hfc->led_state = 0;
1267 hfc->led_new_data = 0;
1268 hfc->old_led_state = 0;
1269
1270 /* init the t3 timer */
1271 init_timer(&hfc->t3_timer);
1272 hfc->t3_timer.data = (long) hfc;
1273 hfc->t3_timer.function = (void *) l1_timer_expire_t3;
1274
1275 /* init the t4 timer */
1276 init_timer(&hfc->t4_timer);
1277 hfc->t4_timer.data = (long) hfc;
1278 hfc->t4_timer.function = (void *) l1_timer_expire_t4;
1279
1280 /* init the background machinery for control requests */
1281 hfc->ctrl_read.bRequestType = 0xc0;
1282 hfc->ctrl_read.bRequest = 1;
1283 hfc->ctrl_read.wLength = cpu_to_le16(1);
1284 hfc->ctrl_write.bRequestType = 0x40;
1285 hfc->ctrl_write.bRequest = 0;
1286 hfc->ctrl_write.wLength = 0;
1287 usb_fill_control_urb(hfc->ctrl_urb,
1288 hfc->dev,
1289 hfc->ctrl_out_pipe,
1290 (u_char *) & hfc->ctrl_write,
1291 NULL, 0, ctrl_complete, hfc);
1292 /* Init All Fifos */
1293 for (i = 0; i < HFCUSB_NUM_FIFOS; i++) {
1294 hfc->fifos[i].iso[0].purb = NULL;
1295 hfc->fifos[i].iso[1].purb = NULL;
1296 hfc->fifos[i].active = 0;
1297 }
1298 /* register Modul to upper Hisax Layers */
1299 hfc->d_if.owner = THIS_MODULE;
1300 hfc->d_if.ifc.priv = &hfc->fifos[HFCUSB_D_TX];
1301 hfc->d_if.ifc.l2l1 = hfc_usb_l2l1;
1302 for (i = 0; i < 2; i++) {
1303 hfc->b_if[i].ifc.priv = &hfc->fifos[HFCUSB_B1_TX + i * 2];
1304 hfc->b_if[i].ifc.l2l1 = hfc_usb_l2l1;
1305 p_b_if[i] = &hfc->b_if[i];
1306 }
1307 /* default Prot: EURO ISDN, should be a module_param */
1308 hfc->protocol = 2;
1309 hisax_register(&hfc->d_if, p_b_if, "hfc_usb", hfc->protocol);
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 if (context->ctrl_urb) {
1631 usb_unlink_urb(context->ctrl_urb);
1632 usb_free_urb(context->ctrl_urb);
1633 context->ctrl_urb = NULL;
1634 }
1635 kfree(context);
1636 return (-EIO);
1637 }
1638 usb_set_intfdata(intf, context);
1639 return (0);
1640 }
1641 } else {
1642 printk(KERN_INFO
1643 "HFC-S USB: no valid vendor found in USB descriptor\n");
1644 }
1645 return (-EIO);
1646 }
1647
1648 /****************************************************/
1649 /* function called when an active device is removed */
1650 /****************************************************/
1651 static void
1652 hfc_usb_disconnect(struct usb_interface
1653 *intf)
1654 {
1655 hfcusb_data *context = usb_get_intfdata(intf);
1656 int i;
1657 printk(KERN_INFO "HFC-S USB: device disconnect\n");
1658 context->disc_flag = true;
1659 usb_set_intfdata(intf, NULL);
1660 if (!context)
1661 return;
1662 if (timer_pending(&context->t3_timer))
1663 del_timer(&context->t3_timer);
1664 if (timer_pending(&context->t4_timer))
1665 del_timer(&context->t4_timer);
1666 /* tell all fifos to terminate */
1667 for (i = 0; i < HFCUSB_NUM_FIFOS; i++) {
1668 if (context->fifos[i].usb_transfer_mode == USB_ISOC) {
1669 if (context->fifos[i].active > 0) {
1670 stop_isoc_chain(&context->fifos[i]);
1671 #ifdef CONFIG_HISAX_DEBUG
1672 DBG(USB_DBG,
1673 "HFC-S USB: hfc_usb_disconnect: stopping ISOC chain Fifo no %i",
1674 i);
1675 #endif
1676 }
1677 } else {
1678 if (context->fifos[i].active > 0) {
1679 context->fifos[i].active = 0;
1680 #ifdef CONFIG_HISAX_DEBUG
1681 DBG(USB_DBG,
1682 "HFC-S USB: hfc_usb_disconnect: unlinking URB for Fifo no %i",
1683 i);
1684 #endif
1685 }
1686 if (context->fifos[i].urb) {
1687 usb_unlink_urb(context->fifos[i].urb);
1688 usb_free_urb(context->fifos[i].urb);
1689 context->fifos[i].urb = NULL;
1690 }
1691 }
1692 context->fifos[i].active = 0;
1693 }
1694 /* wait for all URBS to terminate */
1695 mdelay(10);
1696 if (context->ctrl_urb) {
1697 usb_unlink_urb(context->ctrl_urb);
1698 usb_free_urb(context->ctrl_urb);
1699 context->ctrl_urb = NULL;
1700 }
1701 hisax_unregister(&context->d_if);
1702 kfree(context); /* free our structure again */
1703 } /* hfc_usb_disconnect */
1704
1705 /************************************/
1706 /* our driver information structure */
1707 /************************************/
1708 static struct usb_driver hfc_drv = {
1709 .name = "hfc_usb",
1710 .id_table = hfcusb_idtab,
1711 .probe = hfc_usb_probe,
1712 .disconnect = hfc_usb_disconnect,
1713 };
1714 static void __exit
1715 hfc_usb_exit(void)
1716 {
1717 #ifdef CONFIG_HISAX_DEBUG
1718 DBG(USB_DBG, "HFC-S USB: calling \"hfc_usb_exit\" ...");
1719 #endif
1720 usb_deregister(&hfc_drv); /* release our driver */
1721 printk(KERN_INFO "HFC-S USB: module removed\n");
1722 }
1723
1724 static int __init
1725 hfc_usb_init(void)
1726 {
1727 #ifndef CONFIG_HISAX_DEBUG
1728 unsigned int debug = -1;
1729 #endif
1730 char revstr[30], datestr[30], dummy[30];
1731 sscanf(hfcusb_revision,
1732 "%s %s $ %s %s %s $ ", dummy, revstr,
1733 dummy, datestr, dummy);
1734 printk(KERN_INFO
1735 "HFC-S USB: driver module revision %s date %s loaded, (debug=%i)\n",
1736 revstr, datestr, debug);
1737 if (usb_register(&hfc_drv)) {
1738 printk(KERN_INFO
1739 "HFC-S USB: Unable to register HFC-S USB module at usb stack\n");
1740 return (-1); /* unable to register */
1741 }
1742 return (0);
1743 }
1744
1745 module_init(hfc_usb_init);
1746 module_exit(hfc_usb_exit);
1747 MODULE_AUTHOR(DRIVER_AUTHOR);
1748 MODULE_DESCRIPTION(DRIVER_DESC);
1749 MODULE_LICENSE("GPL");
1750 MODULE_DEVICE_TABLE(usb, hfcusb_idtab);
Linux with added FPC-III support