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PM / sleep: Asynchronous threads for suspend_noirq
[linux/fpc-iii.git] / drivers / isdn / hisax / hfc_usb.c
blob849a80752685bdab2ad945824eadd03c924ff7f5
1 /*
2 * hfc_usb.c
3 *
4 * $Id: hfc_usb.c,v 2.3.2.24 2007/10/14 08:40:29 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 (m.bachem@gmx.de, 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/sched.h>
41 #include <linux/moduleparam.h>
42 #include <linux/slab.h>
43 #include "hisax.h"
44 #include "hisax_if.h"
45 #include "hfc_usb.h"
46
47 static const char *hfcusb_revision =
48 "$Revision: 2.3.2.24 $ $Date: 2007/10/14 08:40:29 $ ";
49
50 /* Hisax debug support
51 * debug flags defined in hfc_usb.h as HFCUSB_DBG_[*]
52 */
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
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 /* VID/PID device list */
68 static struct usb_device_id hfcusb_idtab[] = {
69 {
70 USB_DEVICE(0x0959, 0x2bd0),
71 .driver_info = (unsigned long) &((hfcsusb_vdata)
72 {LED_OFF, {4, 0, 2, 1},
73 "ISDN USB TA (Cologne Chip HFC-S USB based)"}),
74 },
75 {
76 USB_DEVICE(0x0675, 0x1688),
77 .driver_info = (unsigned long) &((hfcsusb_vdata)
78 {LED_SCHEME1, {1, 2, 0, 0},
79 "DrayTek miniVigor 128 USB ISDN TA"}),
80 },
81 {
82 USB_DEVICE(0x07b0, 0x0007),
83 .driver_info = (unsigned long) &((hfcsusb_vdata)
84 {LED_SCHEME1, {0x80, -64, -32, -16},
85 "Billion tiny USB ISDN TA 128"}),
86 },
87 {
88 USB_DEVICE(0x0742, 0x2008),
89 .driver_info = (unsigned long) &((hfcsusb_vdata)
90 {LED_SCHEME1, {4, 0, 2, 1},
91 "Stollmann USB TA"}),
92 },
93 {
94 USB_DEVICE(0x0742, 0x2009),
95 .driver_info = (unsigned long) &((hfcsusb_vdata)
96 {LED_SCHEME1, {4, 0, 2, 1},
97 "Aceex USB ISDN TA"}),
98 },
99 {
100 USB_DEVICE(0x0742, 0x200A),
101 .driver_info = (unsigned long) &((hfcsusb_vdata)
102 {LED_SCHEME1, {4, 0, 2, 1},
103 "OEM USB ISDN TA"}),
104 },
105 {
106 USB_DEVICE(0x08e3, 0x0301),
107 .driver_info = (unsigned long) &((hfcsusb_vdata)
108 {LED_SCHEME1, {2, 0, 1, 4},
109 "Olitec USB RNIS"}),
110 },
111 {
112 USB_DEVICE(0x07fa, 0x0846),
113 .driver_info = (unsigned long) &((hfcsusb_vdata)
114 {LED_SCHEME1, {0x80, -64, -32, -16},
115 "Bewan Modem RNIS USB"}),
116 },
117 {
118 USB_DEVICE(0x07fa, 0x0847),
119 .driver_info = (unsigned long) &((hfcsusb_vdata)
120 {LED_SCHEME1, {0x80, -64, -32, -16},
121 "Djinn Numeris USB"}),
122 },
123 {
124 USB_DEVICE(0x07b0, 0x0006),
125 .driver_info = (unsigned long) &((hfcsusb_vdata)
126 {LED_SCHEME1, {0x80, -64, -32, -16},
127 "Twister ISDN TA"}),
128 },
129 {
130 USB_DEVICE(0x071d, 0x1005),
131 .driver_info = (unsigned long) &((hfcsusb_vdata)
132 {LED_SCHEME1, {0x02, 0, 0x01, 0x04},
133 "Eicon DIVA USB 4.0"}),
134 },
135 { }
136 };
137
138 /* structure defining input+output fifos (interrupt/bulk mode) */
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 struct hfcusb_data; /* forward definition */
147
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 } usb_fifo;
167
168 /* structure holding all data for one device */
169 typedef struct hfcusb_data {
170 /* HiSax Interface for loadable Layer1 drivers */
171 struct hisax_d_if d_if; /* see hisax_if.h */
172 struct hisax_b_if b_if[2]; /* see hisax_if.h */
173 int protocol;
174
175 struct usb_device *dev; /* our device */
176 int if_used; /* used interface number */
177 int alt_used; /* used alternate config */
178 int ctrl_paksize; /* control pipe packet size */
179 int ctrl_in_pipe, /* handles for control pipe */
180 ctrl_out_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;
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 static inline const char *
213 symbolic(struct hfcusb_symbolic_list list[], const int num)
214 {
215 int i;
216 for (i = 0; list[i].name != NULL; i++)
217 if (list[i].num == num)
218 return (list[i].name);
219 return "<unknown ERROR>";
220 }
221
222 static void
223 ctrl_start_transfer(hfcusb_data *hfc)
224 {
225 if (hfc->ctrl_cnt) {
226 hfc->ctrl_urb->pipe = hfc->ctrl_out_pipe;
227 hfc->ctrl_urb->setup_packet = (u_char *)&hfc->ctrl_write;
228 hfc->ctrl_urb->transfer_buffer = NULL;
229 hfc->ctrl_urb->transfer_buffer_length = 0;
230 hfc->ctrl_write.wIndex =
231 cpu_to_le16(hfc->ctrl_buff[hfc->ctrl_out_idx].hfc_reg);
232 hfc->ctrl_write.wValue =
233 cpu_to_le16(hfc->ctrl_buff[hfc->ctrl_out_idx].reg_val);
234
235 usb_submit_urb(hfc->ctrl_urb, GFP_ATOMIC); /* start transfer */
236 }
237 } /* ctrl_start_transfer */
238
239 static int
240 queue_control_request(hfcusb_data *hfc, __u8 reg, __u8 val, int action)
241 {
242 ctrl_buft *buf;
243
244 if (hfc->ctrl_cnt >= HFC_CTRL_BUFSIZE)
245 return (1); /* no space left */
246 buf = &hfc->ctrl_buff[hfc->ctrl_in_idx]; /* pointer to new index */
247 buf->hfc_reg = reg;
248 buf->reg_val = val;
249 buf->action = action;
250 if (++hfc->ctrl_in_idx >= HFC_CTRL_BUFSIZE)
251 hfc->ctrl_in_idx = 0; /* pointer wrap */
252 if (++hfc->ctrl_cnt == 1)
253 ctrl_start_transfer(hfc);
254 return (0);
255 }
256
257 static void
258 ctrl_complete(struct urb *urb)
259 {
260 hfcusb_data *hfc = (hfcusb_data *) urb->context;
261
262 urb->dev = hfc->dev;
263 if (hfc->ctrl_cnt) {
264 hfc->ctrl_cnt--; /* decrement actual count */
265 if (++hfc->ctrl_out_idx >= HFC_CTRL_BUFSIZE)
266 hfc->ctrl_out_idx = 0; /* pointer wrap */
267
268 ctrl_start_transfer(hfc); /* start next transfer */
269 }
270 }
271
272 /* write led data to auxport & invert if necessary */
273 static void
274 write_led(hfcusb_data *hfc, __u8 led_state)
275 {
276 if (led_state != hfc->old_led_state) {
277 hfc->old_led_state = led_state;
278 queue_control_request(hfc, HFCUSB_P_DATA, led_state, 1);
279 }
280 }
281
282 static void
283 set_led_bit(hfcusb_data *hfc, signed short led_bits, int on)
284 {
285 if (on) {
286 if (led_bits < 0)
287 hfc->led_state &= ~abs(led_bits);
288 else
289 hfc->led_state |= led_bits;
290 } else {
291 if (led_bits < 0)
292 hfc->led_state |= abs(led_bits);
293 else
294 hfc->led_state &= ~led_bits;
295 }
296 }
297
298 /* handle LED requests */
299 static void
300 handle_led(hfcusb_data *hfc, int event)
301 {
302 hfcsusb_vdata *driver_info =
303 (hfcsusb_vdata *) hfcusb_idtab[hfc->vend_idx].driver_info;
304
305 /* if no scheme -> no LED action */
306 if (driver_info->led_scheme == LED_OFF)
307 return;
308
309 switch (event) {
310 case LED_POWER_ON:
311 set_led_bit(hfc, driver_info->led_bits[0], 1);
312 set_led_bit(hfc, driver_info->led_bits[1], 0);
313 set_led_bit(hfc, driver_info->led_bits[2], 0);
314 set_led_bit(hfc, driver_info->led_bits[3], 0);
315 break;
316 case LED_POWER_OFF:
317 set_led_bit(hfc, driver_info->led_bits[0], 0);
318 set_led_bit(hfc, driver_info->led_bits[1], 0);
319 set_led_bit(hfc, driver_info->led_bits[2], 0);
320 set_led_bit(hfc, driver_info->led_bits[3], 0);
321 break;
322 case LED_S0_ON:
323 set_led_bit(hfc, driver_info->led_bits[1], 1);
324 break;
325 case LED_S0_OFF:
326 set_led_bit(hfc, driver_info->led_bits[1], 0);
327 break;
328 case LED_B1_ON:
329 set_led_bit(hfc, driver_info->led_bits[2], 1);
330 break;
331 case LED_B1_OFF:
332 set_led_bit(hfc, driver_info->led_bits[2], 0);
333 break;
334 case LED_B2_ON:
335 set_led_bit(hfc, driver_info->led_bits[3], 1);
336 break;
337 case LED_B2_OFF:
338 set_led_bit(hfc, driver_info->led_bits[3], 0);
339 break;
340 }
341 write_led(hfc, hfc->led_state);
342 }
343
344 /* ISDN l1 timer T3 expires */
345 static void
346 l1_timer_expire_t3(hfcusb_data *hfc)
347 {
348 hfc->d_if.ifc.l1l2(&hfc->d_if.ifc, PH_DEACTIVATE | INDICATION,
349 NULL);
350
351 DBG(HFCUSB_DBG_STATES,
352 "HFC-S USB: PH_DEACTIVATE | INDICATION sent (T3 expire)");
353
354 hfc->l1_activated = 0;
355 handle_led(hfc, LED_S0_OFF);
356 /* deactivate : */
357 queue_control_request(hfc, HFCUSB_STATES, 0x10, 1);
358 queue_control_request(hfc, HFCUSB_STATES, 3, 1);
359 }
360
361 /* ISDN l1 timer T4 expires */
362 static void
363 l1_timer_expire_t4(hfcusb_data *hfc)
364 {
365 hfc->d_if.ifc.l1l2(&hfc->d_if.ifc, PH_DEACTIVATE | INDICATION,
366 NULL);
367
368 DBG(HFCUSB_DBG_STATES,
369 "HFC-S USB: PH_DEACTIVATE | INDICATION sent (T4 expire)");
370
371 hfc->l1_activated = 0;
372 handle_led(hfc, LED_S0_OFF);
373 }
374
375 /* S0 state changed */
376 static void
377 s0_state_handler(hfcusb_data *hfc, __u8 state)
378 {
379 __u8 old_state;
380
381 old_state = hfc->l1_state;
382 if (state == old_state || state < 1 || state > 8)
383 return;
384
385 DBG(HFCUSB_DBG_STATES, "HFC-S USB: S0 statechange(%d -> %d)",
386 old_state, state);
387
388 if (state < 4 || state == 7 || state == 8) {
389 if (timer_pending(&hfc->t3_timer))
390 del_timer(&hfc->t3_timer);
391 DBG(HFCUSB_DBG_STATES, "HFC-S USB: T3 deactivated");
392 }
393 if (state >= 7) {
394 if (timer_pending(&hfc->t4_timer))
395 del_timer(&hfc->t4_timer);
396 DBG(HFCUSB_DBG_STATES, "HFC-S USB: T4 deactivated");
397 }
398
399 if (state == 7 && !hfc->l1_activated) {
400 hfc->d_if.ifc.l1l2(&hfc->d_if.ifc,
401 PH_ACTIVATE | INDICATION, NULL);
402 DBG(HFCUSB_DBG_STATES, "HFC-S USB: PH_ACTIVATE | INDICATION sent");
403 hfc->l1_activated = 1;
404 handle_led(hfc, LED_S0_ON);
405 } else if (state <= 3 /* && activated */) {
406 if (old_state == 7 || old_state == 8) {
407 DBG(HFCUSB_DBG_STATES, "HFC-S USB: T4 activated");
408 if (!timer_pending(&hfc->t4_timer)) {
409 hfc->t4_timer.expires =
410 jiffies + (HFC_TIMER_T4 * HZ) / 1000;
411 add_timer(&hfc->t4_timer);
412 }
413 } else {
414 hfc->d_if.ifc.l1l2(&hfc->d_if.ifc,
415 PH_DEACTIVATE | INDICATION,
416 NULL);
417 DBG(HFCUSB_DBG_STATES,
418 "HFC-S USB: PH_DEACTIVATE | INDICATION sent");
419 hfc->l1_activated = 0;
420 handle_led(hfc, LED_S0_OFF);
421 }
422 }
423 hfc->l1_state = state;
424 }
425
426 static void
427 fill_isoc_urb(struct urb *urb, struct usb_device *dev, unsigned int pipe,
428 void *buf, int num_packets, int packet_size, int interval,
429 usb_complete_t complete, void *context)
430 {
431 int k;
432
433 urb->dev = dev;
434 urb->pipe = pipe;
435 urb->complete = complete;
436 urb->number_of_packets = num_packets;
437 urb->transfer_buffer_length = packet_size * num_packets;
438 urb->context = context;
439 urb->transfer_buffer = buf;
440 urb->transfer_flags = URB_ISO_ASAP;
441 urb->actual_length = 0;
442 urb->interval = interval;
443 for (k = 0; k < num_packets; k++) {
444 urb->iso_frame_desc[k].offset = packet_size * k;
445 urb->iso_frame_desc[k].length = packet_size;
446 urb->iso_frame_desc[k].actual_length = 0;
447 }
448 }
449
450 /* allocs urbs and start isoc transfer with two pending urbs to avoid
451 * gaps in the transfer chain
452 */
453 static int
454 start_isoc_chain(usb_fifo *fifo, int num_packets_per_urb,
455 usb_complete_t complete, int packet_size)
456 {
457 int i, k, errcode;
458
459 DBG(HFCUSB_DBG_INIT, "HFC-S USB: starting ISO-URBs for fifo:%d\n",
460 fifo->fifonum);
461
462 /* allocate Memory for Iso out Urbs */
463 for (i = 0; i < 2; i++) {
464 if (!(fifo->iso[i].purb)) {
465 fifo->iso[i].purb =
466 usb_alloc_urb(num_packets_per_urb, GFP_KERNEL);
467 if (!(fifo->iso[i].purb)) {
468 printk(KERN_INFO
469 "alloc urb for fifo %i failed!!!",
470 fifo->fifonum);
471 }
472 fifo->iso[i].owner_fifo = (struct usb_fifo *) fifo;
473
474 /* Init the first iso */
475 if (ISO_BUFFER_SIZE >=
476 (fifo->usb_packet_maxlen *
477 num_packets_per_urb)) {
478 fill_isoc_urb(fifo->iso[i].purb,
479 fifo->hfc->dev, fifo->pipe,
480 fifo->iso[i].buffer,
481 num_packets_per_urb,
482 fifo->usb_packet_maxlen,
483 fifo->intervall, complete,
484 &fifo->iso[i]);
485 memset(fifo->iso[i].buffer, 0,
486 sizeof(fifo->iso[i].buffer));
487 /* defining packet delimeters in fifo->buffer */
488 for (k = 0; k < num_packets_per_urb; k++) {
489 fifo->iso[i].purb->
490 iso_frame_desc[k].offset =
491 k * packet_size;
492 fifo->iso[i].purb->
493 iso_frame_desc[k].length =
494 packet_size;
495 }
496 } else {
497 printk(KERN_INFO
498 "HFC-S USB: ISO Buffer size to small!\n");
499 }
500 }
501 fifo->bit_line = BITLINE_INF;
502
503 errcode = usb_submit_urb(fifo->iso[i].purb, GFP_KERNEL);
504 fifo->active = (errcode >= 0) ? 1 : 0;
505 if (errcode < 0)
506 printk(KERN_INFO "HFC-S USB: usb_submit_urb URB nr:%d, error(%i): '%s'\n",
507 i, errcode, symbolic(urb_errlist, errcode));
508 }
509 return (fifo->active);
510 }
511
512 /* stops running iso chain and frees their pending urbs */
513 static void
514 stop_isoc_chain(usb_fifo *fifo)
515 {
516 int i;
517
518 for (i = 0; i < 2; i++) {
519 if (fifo->iso[i].purb) {
520 DBG(HFCUSB_DBG_INIT,
521 "HFC-S USB: Stopping iso chain for fifo %i.%i",
522 fifo->fifonum, i);
523 usb_kill_urb(fifo->iso[i].purb);
524 usb_free_urb(fifo->iso[i].purb);
525 fifo->iso[i].purb = NULL;
526 }
527 }
528
529 usb_kill_urb(fifo->urb);
530 usb_free_urb(fifo->urb);
531 fifo->urb = NULL;
532 fifo->active = 0;
533 }
534
535 /* defines how much ISO packets are handled in one URB */
536 static int iso_packets[8] =
537 { ISOC_PACKETS_B, ISOC_PACKETS_B, ISOC_PACKETS_B, ISOC_PACKETS_B,
538 ISOC_PACKETS_D, ISOC_PACKETS_D, ISOC_PACKETS_D, ISOC_PACKETS_D
539 };
540
541 static void
542 tx_iso_complete(struct urb *urb)
543 {
544 iso_urb_struct *context_iso_urb = (iso_urb_struct *) urb->context;
545 usb_fifo *fifo = context_iso_urb->owner_fifo;
546 hfcusb_data *hfc = fifo->hfc;
547 int k, tx_offset, num_isoc_packets, sink, len, current_len,
548 errcode;
549 int frame_complete, transp_mode, fifon, status;
550 __u8 threshbit;
551
552 fifon = fifo->fifonum;
553 status = urb->status;
554
555 tx_offset = 0;
556
557 /* ISO transfer only partially completed,
558 look at individual frame status for details */
559 if (status == -EXDEV) {
560 DBG(HFCUSB_DBG_VERBOSE_USB, "HFC-S USB: tx_iso_complete with -EXDEV"
561 ", urb->status %d, fifonum %d\n",
562 status, fifon);
563
564 for (k = 0; k < iso_packets[fifon]; ++k) {
565 errcode = urb->iso_frame_desc[k].status;
566 if (errcode)
567 DBG(HFCUSB_DBG_VERBOSE_USB, "HFC-S USB: tx_iso_complete "
568 "packet %i, status: %i\n",
569 k, errcode);
570 }
571
572 // clear status, so go on with ISO transfers
573 status = 0;
574 }
575
576 if (fifo->active && !status) {
577 transp_mode = 0;
578 if (fifon < 4 && hfc->b_mode[fifon / 2] == L1_MODE_TRANS)
579 transp_mode = 1;
580
581 /* is FifoFull-threshold set for our channel? */
582 threshbit = (hfc->threshold_mask & (1 << fifon));
583 num_isoc_packets = iso_packets[fifon];
584
585 /* predict dataflow to avoid fifo overflow */
586 if (fifon >= HFCUSB_D_TX) {
587 sink = (threshbit) ? SINK_DMIN : SINK_DMAX;
588 } else {
589 sink = (threshbit) ? SINK_MIN : SINK_MAX;
590 }
591 fill_isoc_urb(urb, fifo->hfc->dev, fifo->pipe,
592 context_iso_urb->buffer, num_isoc_packets,
593 fifo->usb_packet_maxlen, fifo->intervall,
594 tx_iso_complete, urb->context);
595 memset(context_iso_urb->buffer, 0,
596 sizeof(context_iso_urb->buffer));
597 frame_complete = 0;
598
599 /* Generate next ISO Packets */
600 for (k = 0; k < num_isoc_packets; ++k) {
601 if (fifo->skbuff) {
602 len = fifo->skbuff->len;
603 /* we lower data margin every msec */
604 fifo->bit_line -= sink;
605 current_len = (0 - fifo->bit_line) / 8;
606 /* maximum 15 byte for every ISO packet makes our life easier */
607 if (current_len > 14)
608 current_len = 14;
609 current_len =
610 (len <=
611 current_len) ? len : current_len;
612 /* how much bit do we put on the line? */
613 fifo->bit_line += current_len * 8;
614
615 context_iso_urb->buffer[tx_offset] = 0;
616 if (current_len == len) {
617 if (!transp_mode) {
618 /* here frame completion */
619 context_iso_urb->
620 buffer[tx_offset] = 1;
621 /* add 2 byte flags and 16bit CRC at end of ISDN frame */
622 fifo->bit_line += 32;
623 }
624 frame_complete = 1;
625 }
626
627 memcpy(context_iso_urb->buffer +
628 tx_offset + 1, fifo->skbuff->data,
629 current_len);
630 skb_pull(fifo->skbuff, current_len);
631
632 /* define packet delimeters within the URB buffer */
633 urb->iso_frame_desc[k].offset = tx_offset;
634 urb->iso_frame_desc[k].length =
635 current_len + 1;
636
637 tx_offset += (current_len + 1);
638 } else {
639 urb->iso_frame_desc[k].offset =
640 tx_offset++;
641
642 urb->iso_frame_desc[k].length = 1;
643 fifo->bit_line -= sink; /* we lower data margin every msec */
644
645 if (fifo->bit_line < BITLINE_INF) {
646 fifo->bit_line = BITLINE_INF;
647 }
648 }
649
650 if (frame_complete) {
651 fifo->delete_flg = 1;
652 fifo->hif->l1l2(fifo->hif,
653 PH_DATA | CONFIRM,
654 (void *) (unsigned long) fifo->skbuff->
655 truesize);
656 if (fifo->skbuff && fifo->delete_flg) {
657 dev_kfree_skb_any(fifo->skbuff);
658 fifo->skbuff = NULL;
659 fifo->delete_flg = 0;
660 }
661 frame_complete = 0;
662 }
663 }
664 errcode = usb_submit_urb(urb, GFP_ATOMIC);
665 if (errcode < 0) {
666 printk(KERN_INFO
667 "HFC-S USB: error submitting ISO URB: %d\n",
668 errcode);
669 }
670 } else {
671 if (status && !hfc->disc_flag) {
672 printk(KERN_INFO
673 "HFC-S USB: tx_iso_complete: error(%i): '%s', fifonum=%d\n",
674 status, symbolic(urb_errlist, status), fifon);
675 }
676 }
677 }
678
679 static void
680 rx_iso_complete(struct urb *urb)
681 {
682 iso_urb_struct *context_iso_urb = (iso_urb_struct *) urb->context;
683 usb_fifo *fifo = context_iso_urb->owner_fifo;
684 hfcusb_data *hfc = fifo->hfc;
685 int k, len, errcode, offset, num_isoc_packets, fifon, maxlen,
686 status;
687 unsigned int iso_status;
688 __u8 *buf;
689 static __u8 eof[8];
690
691 fifon = fifo->fifonum;
692 status = urb->status;
693
694 if (urb->status == -EOVERFLOW) {
695 DBG(HFCUSB_DBG_VERBOSE_USB,
696 "HFC-USB: ignoring USB DATAOVERRUN fifo(%i)", fifon);
697 status = 0;
698 }
699
700 /* ISO transfer only partially completed,
701 look at individual frame status for details */
702 if (status == -EXDEV) {
703 DBG(HFCUSB_DBG_VERBOSE_USB, "HFC-S USB: rx_iso_complete with -EXDEV "
704 "urb->status %d, fifonum %d\n",
705 status, fifon);
706 status = 0;
707 }
708
709 if (fifo->active && !status) {
710 num_isoc_packets = iso_packets[fifon];
711 maxlen = fifo->usb_packet_maxlen;
712 for (k = 0; k < num_isoc_packets; ++k) {
713 len = urb->iso_frame_desc[k].actual_length;
714 offset = urb->iso_frame_desc[k].offset;
715 buf = context_iso_urb->buffer + offset;
716 iso_status = urb->iso_frame_desc[k].status;
717
718 if (iso_status && !hfc->disc_flag)
719 DBG(HFCUSB_DBG_VERBOSE_USB,
720 "HFC-S USB: rx_iso_complete "
721 "ISO packet %i, status: %i\n",
722 k, iso_status);
723
724 if (fifon == HFCUSB_D_RX) {
725 DBG(HFCUSB_DBG_VERBOSE_USB,
726 "HFC-S USB: ISO-D-RX lst_urblen:%2d "
727 "act_urblen:%2d max-urblen:%2d EOF:0x%0x",
728 fifo->last_urblen, len, maxlen,
729 eof[5]);
730
731 DBG_PACKET(HFCUSB_DBG_VERBOSE_USB, buf, len);
732 }
733
734 if (fifo->last_urblen != maxlen) {
735 /* the threshold mask is in the 2nd status byte */
736 hfc->threshold_mask = buf[1];
737 /* care for L1 state only for D-Channel
738 to avoid overlapped iso completions */
739 if (fifon == HFCUSB_D_RX) {
740 /* the S0 state is in the upper half
741 of the 1st status byte */
742 s0_state_handler(hfc, buf[0] >> 4);
743 }
744 eof[fifon] = buf[0] & 1;
745 if (len > 2)
746 collect_rx_frame(fifo, buf + 2,
747 len - 2,
748 (len < maxlen) ?
749 eof[fifon] : 0);
750 } else {
751 collect_rx_frame(fifo, buf, len,
752 (len <
753 maxlen) ? eof[fifon] :
754 0);
755 }
756 fifo->last_urblen = len;
757 }
758
759 fill_isoc_urb(urb, fifo->hfc->dev, fifo->pipe,
760 context_iso_urb->buffer, num_isoc_packets,
761 fifo->usb_packet_maxlen, fifo->intervall,
762 rx_iso_complete, urb->context);
763 errcode = usb_submit_urb(urb, GFP_ATOMIC);
764 if (errcode < 0) {
765 printk(KERN_ERR
766 "HFC-S USB: error submitting ISO URB: %d\n",
767 errcode);
768 }
769 } else {
770 if (status && !hfc->disc_flag) {
771 printk(KERN_ERR
772 "HFC-S USB: rx_iso_complete : "
773 "urb->status %d, fifonum %d\n",
774 status, fifon);
775 }
776 }
777 }
778
779 /* collect rx data from INT- and ISO-URBs */
780 static void
781 collect_rx_frame(usb_fifo *fifo, __u8 *data, int len, int finish)
782 {
783 hfcusb_data *hfc = fifo->hfc;
784 int transp_mode, fifon;
785
786 fifon = fifo->fifonum;
787 transp_mode = 0;
788 if (fifon < 4 && hfc->b_mode[fifon / 2] == L1_MODE_TRANS)
789 transp_mode = 1;
790
791 if (!fifo->skbuff) {
792 fifo->skbuff = dev_alloc_skb(fifo->max_size + 3);
793 if (!fifo->skbuff) {
794 printk(KERN_ERR
795 "HFC-S USB: cannot allocate buffer for fifo(%d)\n",
796 fifon);
797 return;
798 }
799 }
800 if (len) {
801 if (fifo->skbuff->len + len < fifo->max_size) {
802 memcpy(skb_put(fifo->skbuff, len), data, len);
803 } else {
804 DBG(HFCUSB_DBG_FIFO_ERR,
805 "HCF-USB: got frame exceeded fifo->max_size(%d) fifo(%d)",
806 fifo->max_size, fifon);
807 DBG_SKB(HFCUSB_DBG_VERBOSE_USB, fifo->skbuff);
808 skb_trim(fifo->skbuff, 0);
809 }
810 }
811 if (transp_mode && fifo->skbuff->len >= 128) {
812 fifo->hif->l1l2(fifo->hif, PH_DATA | INDICATION,
813 fifo->skbuff);
814 fifo->skbuff = NULL;
815 return;
816 }
817 /* we have a complete hdlc packet */
818 if (finish) {
819 if (fifo->skbuff->len > 3 &&
820 !fifo->skbuff->data[fifo->skbuff->len - 1]) {
821
822 if (fifon == HFCUSB_D_RX) {
823 DBG(HFCUSB_DBG_DCHANNEL,
824 "HFC-S USB: D-RX len(%d)", fifo->skbuff->len);
825 DBG_SKB(HFCUSB_DBG_DCHANNEL, fifo->skbuff);
826 }
827
828 /* remove CRC & status */
829 skb_trim(fifo->skbuff, fifo->skbuff->len - 3);
830 if (fifon == HFCUSB_PCM_RX) {
831 fifo->hif->l1l2(fifo->hif,
832 PH_DATA_E | INDICATION,
833 fifo->skbuff);
834 } else
835 fifo->hif->l1l2(fifo->hif,
836 PH_DATA | INDICATION,
837 fifo->skbuff);
838 fifo->skbuff = NULL; /* buffer was freed from upper layer */
839 } else {
840 DBG(HFCUSB_DBG_FIFO_ERR,
841 "HFC-S USB: ERROR frame len(%d) fifo(%d)",
842 fifo->skbuff->len, fifon);
843 DBG_SKB(HFCUSB_DBG_VERBOSE_USB, fifo->skbuff);
844 skb_trim(fifo->skbuff, 0);
845 }
846 }
847 }
848
849 static void
850 rx_int_complete(struct urb *urb)
851 {
852 int len;
853 int status;
854 __u8 *buf, maxlen, fifon;
855 usb_fifo *fifo = (usb_fifo *) urb->context;
856 hfcusb_data *hfc = fifo->hfc;
857 static __u8 eof[8];
858
859 urb->dev = hfc->dev; /* security init */
860
861 fifon = fifo->fifonum;
862 if ((!fifo->active) || (urb->status)) {
863 DBG(HFCUSB_DBG_INIT, "HFC-S USB: RX-Fifo %i is going down (%i)",
864 fifon, urb->status);
865
866 fifo->urb->interval = 0; /* cancel automatic rescheduling */
867 if (fifo->skbuff) {
868 dev_kfree_skb_any(fifo->skbuff);
869 fifo->skbuff = NULL;
870 }
871 return;
872 }
873 len = urb->actual_length;
874 buf = fifo->buffer;
875 maxlen = fifo->usb_packet_maxlen;
876
877 if (fifon == HFCUSB_D_RX) {
878 DBG(HFCUSB_DBG_VERBOSE_USB,
879 "HFC-S USB: INT-D-RX lst_urblen:%2d "
880 "act_urblen:%2d max-urblen:%2d EOF:0x%0x",
881 fifo->last_urblen, len, maxlen,
882 eof[5]);
883 DBG_PACKET(HFCUSB_DBG_VERBOSE_USB, buf, len);
884 }
885
886 if (fifo->last_urblen != fifo->usb_packet_maxlen) {
887 /* the threshold mask is in the 2nd status byte */
888 hfc->threshold_mask = buf[1];
889 /* the S0 state is in the upper half of the 1st status byte */
890 s0_state_handler(hfc, buf[0] >> 4);
891 eof[fifon] = buf[0] & 1;
892 /* if we have more than the 2 status bytes -> collect data */
893 if (len > 2)
894 collect_rx_frame(fifo, buf + 2,
895 urb->actual_length - 2,
896 (len < maxlen) ? eof[fifon] : 0);
897 } else {
898 collect_rx_frame(fifo, buf, urb->actual_length,
899 (len < maxlen) ? eof[fifon] : 0);
900 }
901 fifo->last_urblen = urb->actual_length;
902 status = usb_submit_urb(urb, GFP_ATOMIC);
903 if (status) {
904 printk(KERN_INFO
905 "HFC-S USB: %s error resubmitting URB fifo(%d)\n",
906 __func__, fifon);
907 }
908 }
909
910 /* start initial INT-URB for certain fifo */
911 static void
912 start_int_fifo(usb_fifo *fifo)
913 {
914 int errcode;
915
916 DBG(HFCUSB_DBG_INIT, "HFC-S USB: starting RX INT-URB for fifo:%d\n",
917 fifo->fifonum);
918
919 if (!fifo->urb) {
920 fifo->urb = usb_alloc_urb(0, GFP_KERNEL);
921 if (!fifo->urb)
922 return;
923 }
924 usb_fill_int_urb(fifo->urb, fifo->hfc->dev, fifo->pipe,
925 fifo->buffer, fifo->usb_packet_maxlen,
926 rx_int_complete, fifo, fifo->intervall);
927 fifo->active = 1; /* must be marked active */
928 errcode = usb_submit_urb(fifo->urb, GFP_KERNEL);
929 if (errcode) {
930 printk(KERN_ERR
931 "HFC-S USB: submit URB error(start_int_info): status:%i\n",
932 errcode);
933 fifo->active = 0;
934 fifo->skbuff = NULL;
935 }
936 }
937
938 static void
939 setup_bchannel(hfcusb_data *hfc, int channel, int mode)
940 {
941 __u8 val, idx_table[2] = { 0, 2 };
942
943 if (hfc->disc_flag) {
944 return;
945 }
946 DBG(HFCUSB_DBG_STATES, "HFC-S USB: setting channel %d to mode %d",
947 channel, mode);
948 hfc->b_mode[channel] = mode;
949
950 /* setup CON_HDLC */
951 val = 0;
952 if (mode != L1_MODE_NULL)
953 val = 8; /* enable fifo? */
954 if (mode == L1_MODE_TRANS)
955 val |= 2; /* set transparent bit */
956
957 /* set FIFO to transmit register */
958 queue_control_request(hfc, HFCUSB_FIFO, idx_table[channel], 1);
959 queue_control_request(hfc, HFCUSB_CON_HDLC, val, 1);
960 /* reset fifo */
961 queue_control_request(hfc, HFCUSB_INC_RES_F, 2, 1);
962 /* set FIFO to receive register */
963 queue_control_request(hfc, HFCUSB_FIFO, idx_table[channel] + 1, 1);
964 queue_control_request(hfc, HFCUSB_CON_HDLC, val, 1);
965 /* reset fifo */
966 queue_control_request(hfc, HFCUSB_INC_RES_F, 2, 1);
967
968 val = 0x40;
969 if (hfc->b_mode[0])
970 val |= 1;
971 if (hfc->b_mode[1])
972 val |= 2;
973 queue_control_request(hfc, HFCUSB_SCTRL, val, 1);
974
975 val = 0;
976 if (hfc->b_mode[0])
977 val |= 1;
978 if (hfc->b_mode[1])
979 val |= 2;
980 queue_control_request(hfc, HFCUSB_SCTRL_R, val, 1);
981
982 if (mode == L1_MODE_NULL) {
983 if (channel)
984 handle_led(hfc, LED_B2_OFF);
985 else
986 handle_led(hfc, LED_B1_OFF);
987 } else {
988 if (channel)
989 handle_led(hfc, LED_B2_ON);
990 else
991 handle_led(hfc, LED_B1_ON);
992 }
993 }
994
995 static void
996 hfc_usb_l2l1(struct hisax_if *my_hisax_if, int pr, void *arg)
997 {
998 usb_fifo *fifo = my_hisax_if->priv;
999 hfcusb_data *hfc = fifo->hfc;
1000
1001 switch (pr) {
1002 case PH_ACTIVATE | REQUEST:
1003 if (fifo->fifonum == HFCUSB_D_TX) {
1004 DBG(HFCUSB_DBG_STATES,
1005 "HFC_USB: hfc_usb_d_l2l1 D-chan: PH_ACTIVATE | REQUEST");
1006
1007 if (hfc->l1_state != 3
1008 && hfc->l1_state != 7) {
1009 hfc->d_if.ifc.l1l2(&hfc->d_if.ifc,
1010 PH_DEACTIVATE |
1011 INDICATION,
1012 NULL);
1013 DBG(HFCUSB_DBG_STATES,
1014 "HFC-S USB: PH_DEACTIVATE | INDICATION sent (not state 3 or 7)");
1015 } else {
1016 if (hfc->l1_state == 7) { /* l1 already active */
1017 hfc->d_if.ifc.l1l2(&hfc->
1018 d_if.
1019 ifc,
1020 PH_ACTIVATE
1021 |
1022 INDICATION,
1023 NULL);
1024 DBG(HFCUSB_DBG_STATES,
1025 "HFC-S USB: PH_ACTIVATE | INDICATION sent again ;)");
1026 } else {
1027 /* force sending sending INFO1 */
1028 queue_control_request(hfc,
1029 HFCUSB_STATES,
1030 0x14,
1031 1);
1032 mdelay(1);
1033 /* start l1 activation */
1034 queue_control_request(hfc,
1035 HFCUSB_STATES,
1036 0x04,
1037 1);
1038 if (!timer_pending
1039 (&hfc->t3_timer)) {
1040 hfc->t3_timer.
1041 expires =
1042 jiffies +
1043 (HFC_TIMER_T3 *
1044 HZ) / 1000;
1045 add_timer(&hfc->
1046 t3_timer);
1047 }
1048 }
1049 }
1050 } else {
1051 DBG(HFCUSB_DBG_STATES,
1052 "HFC_USB: hfc_usb_d_l2l1 B-chan: PH_ACTIVATE | REQUEST");
1053 setup_bchannel(hfc,
1054 (fifo->fifonum ==
1055 HFCUSB_B1_TX) ? 0 : 1,
1056 (long) arg);
1057 fifo->hif->l1l2(fifo->hif,
1058 PH_ACTIVATE | INDICATION,
1059 NULL);
1060 }
1061 break;
1062 case PH_DEACTIVATE | REQUEST:
1063 if (fifo->fifonum == HFCUSB_D_TX) {
1064 DBG(HFCUSB_DBG_STATES,
1065 "HFC_USB: hfc_usb_d_l2l1 D-chan: PH_DEACTIVATE | REQUEST");
1066 } else {
1067 DBG(HFCUSB_DBG_STATES,
1068 "HFC_USB: hfc_usb_d_l2l1 Bx-chan: PH_DEACTIVATE | REQUEST");
1069 setup_bchannel(hfc,
1070 (fifo->fifonum ==
1071 HFCUSB_B1_TX) ? 0 : 1,
1072 (int) L1_MODE_NULL);
1073 fifo->hif->l1l2(fifo->hif,
1074 PH_DEACTIVATE | INDICATION,
1075 NULL);
1076 }
1077 break;
1078 case PH_DATA | REQUEST:
1079 if (fifo->skbuff && fifo->delete_flg) {
1080 dev_kfree_skb_any(fifo->skbuff);
1081 fifo->skbuff = NULL;
1082 fifo->delete_flg = 0;
1083 }
1084 fifo->skbuff = arg; /* we have a new buffer */
1085 break;
1086 default:
1087 DBG(HFCUSB_DBG_STATES,
1088 "HFC_USB: hfc_usb_d_l2l1: unknown state : %#x", pr);
1089 break;
1090 }
1091 }
1092
1093 /* initial init HFC-S USB chip registers, HiSax interface, USB URBs */
1094 static int
1095 hfc_usb_init(hfcusb_data *hfc)
1096 {
1097 usb_fifo *fifo;
1098 int i;
1099 u_char b;
1100 struct hisax_b_if *p_b_if[2];
1101
1102 /* check the chip id */
1103 if (read_usb(hfc, HFCUSB_CHIP_ID, &b) != 1) {
1104 printk(KERN_INFO "HFC-USB: cannot read chip id\n");
1105 return (1);
1106 }
1107 if (b != HFCUSB_CHIPID) {
1108 printk(KERN_INFO "HFC-S USB: Invalid chip id 0x%02x\n", b);
1109 return (1);
1110 }
1111
1112 /* first set the needed config, interface and alternate */
1113 usb_set_interface(hfc->dev, hfc->if_used, hfc->alt_used);
1114
1115 /* do Chip reset */
1116 write_usb(hfc, HFCUSB_CIRM, 8);
1117 /* aux = output, reset off */
1118 write_usb(hfc, HFCUSB_CIRM, 0x10);
1119
1120 /* set USB_SIZE to match wMaxPacketSize for INT or BULK transfers */
1121 write_usb(hfc, HFCUSB_USB_SIZE,
1122 (hfc->packet_size / 8) | ((hfc->packet_size / 8) << 4));
1123
1124 /* set USB_SIZE_I to match wMaxPacketSize for ISO transfers */
1125 write_usb(hfc, HFCUSB_USB_SIZE_I, hfc->iso_packet_size);
1126
1127 /* enable PCM/GCI master mode */
1128 write_usb(hfc, HFCUSB_MST_MODE1, 0); /* set default values */
1129 write_usb(hfc, HFCUSB_MST_MODE0, 1); /* enable master mode */
1130
1131 /* init the fifos */
1132 write_usb(hfc, HFCUSB_F_THRES,
1133 (HFCUSB_TX_THRESHOLD /
1134 8) | ((HFCUSB_RX_THRESHOLD / 8) << 4));
1135
1136 fifo = hfc->fifos;
1137 for (i = 0; i < HFCUSB_NUM_FIFOS; i++) {
1138 write_usb(hfc, HFCUSB_FIFO, i); /* select the desired fifo */
1139 fifo[i].skbuff = NULL; /* init buffer pointer */
1140 fifo[i].max_size =
1141 (i <= HFCUSB_B2_RX) ? MAX_BCH_SIZE : MAX_DFRAME_LEN;
1142 fifo[i].last_urblen = 0;
1143 /* set 2 bit for D- & E-channel */
1144 write_usb(hfc, HFCUSB_HDLC_PAR,
1145 ((i <= HFCUSB_B2_RX) ? 0 : 2));
1146 /* rx hdlc, enable IFF for D-channel */
1147 write_usb(hfc, HFCUSB_CON_HDLC,
1148 ((i == HFCUSB_D_TX) ? 0x09 : 0x08));
1149 write_usb(hfc, HFCUSB_INC_RES_F, 2); /* reset the fifo */
1150 }
1151
1152 write_usb(hfc, HFCUSB_CLKDEL, 0x0f); /* clock delay value */
1153 write_usb(hfc, HFCUSB_STATES, 3 | 0x10); /* set deactivated mode */
1154 write_usb(hfc, HFCUSB_STATES, 3); /* enable state machine */
1155
1156 write_usb(hfc, HFCUSB_SCTRL_R, 0); /* disable both B receivers */
1157 write_usb(hfc, HFCUSB_SCTRL, 0x40); /* disable B transmitters + capacitive mode */
1158
1159 /* set both B-channel to not connected */
1160 hfc->b_mode[0] = L1_MODE_NULL;
1161 hfc->b_mode[1] = L1_MODE_NULL;
1162
1163 hfc->l1_activated = 0;
1164 hfc->disc_flag = 0;
1165 hfc->led_state = 0;
1166 hfc->old_led_state = 0;
1167
1168 /* init the t3 timer */
1169 init_timer(&hfc->t3_timer);
1170 hfc->t3_timer.data = (long) hfc;
1171 hfc->t3_timer.function = (void *) l1_timer_expire_t3;
1172
1173 /* init the t4 timer */
1174 init_timer(&hfc->t4_timer);
1175 hfc->t4_timer.data = (long) hfc;
1176 hfc->t4_timer.function = (void *) l1_timer_expire_t4;
1177
1178 /* init the background machinery for control requests */
1179 hfc->ctrl_read.bRequestType = 0xc0;
1180 hfc->ctrl_read.bRequest = 1;
1181 hfc->ctrl_read.wLength = cpu_to_le16(1);
1182 hfc->ctrl_write.bRequestType = 0x40;
1183 hfc->ctrl_write.bRequest = 0;
1184 hfc->ctrl_write.wLength = 0;
1185 usb_fill_control_urb(hfc->ctrl_urb,
1186 hfc->dev,
1187 hfc->ctrl_out_pipe,
1188 (u_char *)&hfc->ctrl_write,
1189 NULL, 0, ctrl_complete, hfc);
1190 /* Init All Fifos */
1191 for (i = 0; i < HFCUSB_NUM_FIFOS; i++) {
1192 hfc->fifos[i].iso[0].purb = NULL;
1193 hfc->fifos[i].iso[1].purb = NULL;
1194 hfc->fifos[i].active = 0;
1195 }
1196 /* register Modul to upper Hisax Layers */
1197 hfc->d_if.owner = THIS_MODULE;
1198 hfc->d_if.ifc.priv = &hfc->fifos[HFCUSB_D_TX];
1199 hfc->d_if.ifc.l2l1 = hfc_usb_l2l1;
1200 for (i = 0; i < 2; i++) {
1201 hfc->b_if[i].ifc.priv = &hfc->fifos[HFCUSB_B1_TX + i * 2];
1202 hfc->b_if[i].ifc.l2l1 = hfc_usb_l2l1;
1203 p_b_if[i] = &hfc->b_if[i];
1204 }
1205 /* default Prot: EURO ISDN, should be a module_param */
1206 hfc->protocol = 2;
1207 i = hisax_register(&hfc->d_if, p_b_if, "hfc_usb", hfc->protocol);
1208 if (i) {
1209 printk(KERN_INFO "HFC-S USB: hisax_register -> %d\n", i);
1210 return i;
1211 }
1212
1213 #ifdef CONFIG_HISAX_DEBUG
1214 hfc_debug = debug;
1215 #endif
1216
1217 for (i = 0; i < 4; i++)
1218 hfc->fifos[i].hif = &p_b_if[i / 2]->ifc;
1219 for (i = 4; i < 8; i++)
1220 hfc->fifos[i].hif = &hfc->d_if.ifc;
1221
1222 /* 3 (+1) INT IN + 3 ISO OUT */
1223 if (hfc->cfg_used == CNF_3INT3ISO || hfc->cfg_used == CNF_4INT3ISO) {
1224 start_int_fifo(hfc->fifos + HFCUSB_D_RX);
1225 if (hfc->fifos[HFCUSB_PCM_RX].pipe)
1226 start_int_fifo(hfc->fifos + HFCUSB_PCM_RX);
1227 start_int_fifo(hfc->fifos + HFCUSB_B1_RX);
1228 start_int_fifo(hfc->fifos + HFCUSB_B2_RX);
1229 }
1230 /* 3 (+1) ISO IN + 3 ISO OUT */
1231 if (hfc->cfg_used == CNF_3ISO3ISO || hfc->cfg_used == CNF_4ISO3ISO) {
1232 start_isoc_chain(hfc->fifos + HFCUSB_D_RX, ISOC_PACKETS_D,
1233 rx_iso_complete, 16);
1234 if (hfc->fifos[HFCUSB_PCM_RX].pipe)
1235 start_isoc_chain(hfc->fifos + HFCUSB_PCM_RX,
1236 ISOC_PACKETS_D, rx_iso_complete,
1237 16);
1238 start_isoc_chain(hfc->fifos + HFCUSB_B1_RX, ISOC_PACKETS_B,
1239 rx_iso_complete, 16);
1240 start_isoc_chain(hfc->fifos + HFCUSB_B2_RX, ISOC_PACKETS_B,
1241 rx_iso_complete, 16);
1242 }
1243
1244 start_isoc_chain(hfc->fifos + HFCUSB_D_TX, ISOC_PACKETS_D,
1245 tx_iso_complete, 1);
1246 start_isoc_chain(hfc->fifos + HFCUSB_B1_TX, ISOC_PACKETS_B,
1247 tx_iso_complete, 1);
1248 start_isoc_chain(hfc->fifos + HFCUSB_B2_TX, ISOC_PACKETS_B,
1249 tx_iso_complete, 1);
1250
1251 handle_led(hfc, LED_POWER_ON);
1252
1253 return (0);
1254 }
1255
1256 /* initial callback for each plugged USB device */
1257 static int
1258 hfc_usb_probe(struct usb_interface *intf, const struct usb_device_id *id)
1259 {
1260 struct usb_device *dev = interface_to_usbdev(intf);
1261 hfcusb_data *context;
1262 struct usb_host_interface *iface = intf->cur_altsetting;
1263 struct usb_host_interface *iface_used = NULL;
1264 struct usb_host_endpoint *ep;
1265 int ifnum = iface->desc.bInterfaceNumber;
1266 int i, idx, alt_idx, probe_alt_setting, vend_idx, cfg_used, *vcf,
1267 attr, cfg_found, cidx, ep_addr;
1268 int cmptbl[16], small_match, iso_packet_size, packet_size,
1269 alt_used = 0;
1270 hfcsusb_vdata *driver_info;
1271
1272 vend_idx = 0xffff;
1273 for (i = 0; hfcusb_idtab[i].idVendor; i++) {
1274 if ((le16_to_cpu(dev->descriptor.idVendor) == hfcusb_idtab[i].idVendor)
1275 && (le16_to_cpu(dev->descriptor.idProduct) == hfcusb_idtab[i].idProduct)) {
1276 vend_idx = i;
1277 continue;
1278 }
1279 }
1280
1281 printk(KERN_INFO
1282 "HFC-S USB: probing interface(%d) actalt(%d) minor(%d)\n",
1283 ifnum, iface->desc.bAlternateSetting, intf->minor);
1284
1285 if (vend_idx != 0xffff) {
1286 /* if vendor and product ID is OK, start probing alternate settings */
1287 alt_idx = 0;
1288 small_match = 0xffff;
1289
1290 /* default settings */
1291 iso_packet_size = 16;
1292 packet_size = 64;
1293
1294 while (alt_idx < intf->num_altsetting) {
1295 iface = intf->altsetting + alt_idx;
1296 probe_alt_setting = iface->desc.bAlternateSetting;
1297 cfg_used = 0;
1298
1299 /* check for config EOL element */
1300 while (validconf[cfg_used][0]) {
1301 cfg_found = 1;
1302 vcf = validconf[cfg_used];
1303 /* first endpoint descriptor */
1304 ep = iface->endpoint;
1305
1306 memcpy(cmptbl, vcf, 16 * sizeof(int));
1307
1308 /* check for all endpoints in this alternate setting */
1309 for (i = 0; i < iface->desc.bNumEndpoints;
1310 i++) {
1311 ep_addr =
1312 ep->desc.bEndpointAddress;
1313 /* get endpoint base */
1314 idx = ((ep_addr & 0x7f) - 1) * 2;
1315 if (ep_addr & 0x80)
1316 idx++;
1317 attr = ep->desc.bmAttributes;
1318 if (cmptbl[idx] == EP_NUL) {
1319 cfg_found = 0;
1320 }
1321 if (attr == USB_ENDPOINT_XFER_INT
1322 && cmptbl[idx] == EP_INT)
1323 cmptbl[idx] = EP_NUL;
1324 if (attr == USB_ENDPOINT_XFER_BULK
1325 && cmptbl[idx] == EP_BLK)
1326 cmptbl[idx] = EP_NUL;
1327 if (attr == USB_ENDPOINT_XFER_ISOC
1328 && cmptbl[idx] == EP_ISO)
1329 cmptbl[idx] = EP_NUL;
1330
1331 /* check if all INT endpoints match minimum interval */
1332 if ((attr == USB_ENDPOINT_XFER_INT)
1333 && (ep->desc.bInterval < vcf[17])) {
1334 cfg_found = 0;
1335 }
1336 ep++;
1337 }
1338 for (i = 0; i < 16; i++) {
1339 /* all entries must be EP_NOP or EP_NUL for a valid config */
1340 if (cmptbl[i] != EP_NOP
1341 && cmptbl[i] != EP_NUL)
1342 cfg_found = 0;
1343 }
1344 if (cfg_found) {
1345 if (cfg_used < small_match) {
1346 small_match = cfg_used;
1347 alt_used =
1348 probe_alt_setting;
1349 iface_used = iface;
1350 }
1351 }
1352 cfg_used++;
1353 }
1354 alt_idx++;
1355 } /* (alt_idx < intf->num_altsetting) */
1356
1357 /* found a valid USB Ta Endpint config */
1358 if (small_match != 0xffff) {
1359 iface = iface_used;
1360 if (!(context = kzalloc(sizeof(hfcusb_data), GFP_KERNEL)))
1361 return (-ENOMEM); /* got no mem */
1362
1363 ep = iface->endpoint;
1364 vcf = validconf[small_match];
1365
1366 for (i = 0; i < iface->desc.bNumEndpoints; i++) {
1367 ep_addr = ep->desc.bEndpointAddress;
1368 /* get endpoint base */
1369 idx = ((ep_addr & 0x7f) - 1) * 2;
1370 if (ep_addr & 0x80)
1371 idx++;
1372 cidx = idx & 7;
1373 attr = ep->desc.bmAttributes;
1374
1375 /* init Endpoints */
1376 if (vcf[idx] != EP_NOP
1377 && vcf[idx] != EP_NUL) {
1378 switch (attr) {
1379 case USB_ENDPOINT_XFER_INT:
1380 context->
1381 fifos[cidx].
1382 pipe =
1383 usb_rcvintpipe
1384 (dev,
1385 ep->desc.
1386 bEndpointAddress);
1387 context->
1388 fifos[cidx].
1389 usb_transfer_mode
1390 = USB_INT;
1391 packet_size =
1392 le16_to_cpu(ep->desc.wMaxPacketSize);
1393 break;
1394 case USB_ENDPOINT_XFER_BULK:
1395 if (ep_addr & 0x80)
1396 context->
1397 fifos
1398 [cidx].
1399 pipe =
1400 usb_rcvbulkpipe
1401 (dev,
1402 ep->
1403 desc.
1404 bEndpointAddress);
1405 else
1406 context->
1407 fifos
1408 [cidx].
1409 pipe =
1410 usb_sndbulkpipe
1411 (dev,
1412 ep->
1413 desc.
1414 bEndpointAddress);
1415 context->
1416 fifos[cidx].
1417 usb_transfer_mode
1418 = USB_BULK;
1419 packet_size =
1420 le16_to_cpu(ep->desc.wMaxPacketSize);
1421 break;
1422 case USB_ENDPOINT_XFER_ISOC:
1423 if (ep_addr & 0x80)
1424 context->
1425 fifos
1426 [cidx].
1427 pipe =
1428 usb_rcvisocpipe
1429 (dev,
1430 ep->
1431 desc.
1432 bEndpointAddress);
1433 else
1434 context->
1435 fifos
1436 [cidx].
1437 pipe =
1438 usb_sndisocpipe
1439 (dev,
1440 ep->
1441 desc.
1442 bEndpointAddress);
1443 context->
1444 fifos[cidx].
1445 usb_transfer_mode
1446 = USB_ISOC;
1447 iso_packet_size =
1448 le16_to_cpu(ep->desc.wMaxPacketSize);
1449 break;
1450 default:
1451 context->
1452 fifos[cidx].
1453 pipe = 0;
1454 } /* switch attribute */
1455
1456 if (context->fifos[cidx].pipe) {
1457 context->fifos[cidx].
1458 fifonum = cidx;
1459 context->fifos[cidx].hfc =
1460 context;
1461 context->fifos[cidx].usb_packet_maxlen =
1462 le16_to_cpu(ep->desc.wMaxPacketSize);
1463 context->fifos[cidx].
1464 intervall =
1465 ep->desc.bInterval;
1466 context->fifos[cidx].
1467 skbuff = NULL;
1468 }
1469 }
1470 ep++;
1471 }
1472 context->dev = dev; /* save device */
1473 context->if_used = ifnum; /* save used interface */
1474 context->alt_used = alt_used; /* and alternate config */
1475 context->ctrl_paksize = dev->descriptor.bMaxPacketSize0; /* control size */
1476 context->cfg_used = vcf[16]; /* store used config */
1477 context->vend_idx = vend_idx; /* store found vendor */
1478 context->packet_size = packet_size;
1479 context->iso_packet_size = iso_packet_size;
1480
1481 /* create the control pipes needed for register access */
1482 context->ctrl_in_pipe =
1483 usb_rcvctrlpipe(context->dev, 0);
1484 context->ctrl_out_pipe =
1485 usb_sndctrlpipe(context->dev, 0);
1486
1487 driver_info = (hfcsusb_vdata *)
1488 hfcusb_idtab[vend_idx].driver_info;
1489
1490 context->ctrl_urb = usb_alloc_urb(0, GFP_KERNEL);
1491
1492 if (!context->ctrl_urb) {
1493 pr_warn("%s: No memory for control urb\n",
1494 driver_info->vend_name);
1495 kfree(context);
1496 return -ENOMEM;
1497 }
1498
1499 pr_info("HFC-S USB: detected \"%s\"\n",
1500 driver_info->vend_name);
1501
1502 DBG(HFCUSB_DBG_INIT,
1503 "HFC-S USB: Endpoint-Config: %s (if=%d alt=%d), E-Channel(%d)",
1504 conf_str[small_match], context->if_used,
1505 context->alt_used,
1506 validconf[small_match][18]);
1507
1508 /* init the chip and register the driver */
1509 if (hfc_usb_init(context)) {
1510 usb_kill_urb(context->ctrl_urb);
1511 usb_free_urb(context->ctrl_urb);
1512 context->ctrl_urb = NULL;
1513 kfree(context);
1514 return (-EIO);
1515 }
1516 usb_set_intfdata(intf, context);
1517 return (0);
1518 }
1519 } else {
1520 printk(KERN_INFO
1521 "HFC-S USB: no valid vendor found in USB descriptor\n");
1522 }
1523 return (-EIO);
1524 }
1525
1526 /* callback for unplugged USB device */
1527 static void
1528 hfc_usb_disconnect(struct usb_interface *intf)
1529 {
1530 hfcusb_data *context = usb_get_intfdata(intf);
1531 int i;
1532
1533 handle_led(context, LED_POWER_OFF);
1534 schedule_timeout(HZ / 100);
1535
1536 printk(KERN_INFO "HFC-S USB: device disconnect\n");
1537 context->disc_flag = 1;
1538 usb_set_intfdata(intf, NULL);
1539
1540 if (timer_pending(&context->t3_timer))
1541 del_timer(&context->t3_timer);
1542 if (timer_pending(&context->t4_timer))
1543 del_timer(&context->t4_timer);
1544
1545 /* tell all fifos to terminate */
1546 for (i = 0; i < HFCUSB_NUM_FIFOS; i++) {
1547 if (context->fifos[i].usb_transfer_mode == USB_ISOC) {
1548 if (context->fifos[i].active > 0) {
1549 stop_isoc_chain(&context->fifos[i]);
1550 DBG(HFCUSB_DBG_INIT,
1551 "HFC-S USB: %s stopping ISOC chain Fifo(%i)",
1552 __func__, i);
1553 }
1554 } else {
1555 if (context->fifos[i].active > 0) {
1556 context->fifos[i].active = 0;
1557 DBG(HFCUSB_DBG_INIT,
1558 "HFC-S USB: %s unlinking URB for Fifo(%i)",
1559 __func__, i);
1560 }
1561 usb_kill_urb(context->fifos[i].urb);
1562 usb_free_urb(context->fifos[i].urb);
1563 context->fifos[i].urb = NULL;
1564 }
1565 context->fifos[i].active = 0;
1566 }
1567 usb_kill_urb(context->ctrl_urb);
1568 usb_free_urb(context->ctrl_urb);
1569 context->ctrl_urb = NULL;
1570 hisax_unregister(&context->d_if);
1571 kfree(context); /* free our structure again */
1572 }
1573
1574 static struct usb_driver hfc_drv = {
1575 .name = "hfc_usb",
1576 .id_table = hfcusb_idtab,
1577 .probe = hfc_usb_probe,
1578 .disconnect = hfc_usb_disconnect,
1579 .disable_hub_initiated_lpm = 1,
1580 };
1581
1582 static void __exit
1583 hfc_usb_mod_exit(void)
1584 {
1585 usb_deregister(&hfc_drv); /* release our driver */
1586 printk(KERN_INFO "HFC-S USB: module removed\n");
1587 }
1588
1589 static int __init
1590 hfc_usb_mod_init(void)
1591 {
1592 char revstr[30], datestr[30], dummy[30];
1593 #ifndef CONFIG_HISAX_DEBUG
1594 hfc_debug = debug;
1595 #endif
1596 sscanf(hfcusb_revision,
1597 "%s %s $ %s %s %s $ ", dummy, revstr,
1598 dummy, datestr, dummy);
1599 printk(KERN_INFO
1600 "HFC-S USB: driver module revision %s date %s loaded, (debug=%i)\n",
1601 revstr, datestr, debug);
1602 if (usb_register(&hfc_drv)) {
1603 printk(KERN_INFO
1604 "HFC-S USB: Unable to register HFC-S USB module at usb stack\n");
1605 return (-1); /* unable to register */
1606 }
1607 return (0);
1608 }
1609
1610 module_init(hfc_usb_mod_init);
1611 module_exit(hfc_usb_mod_exit);
1612 MODULE_AUTHOR(DRIVER_AUTHOR);
1613 MODULE_DESCRIPTION(DRIVER_DESC);
1614 MODULE_LICENSE("GPL");
1615 MODULE_DEVICE_TABLE(usb, hfcusb_idtab);
Linux with added FPC-III support