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usb: xhci-plat: properly handle probe deferral for devm_clk_get()
[linux/fpc-iii.git] / drivers / isdn / hisax / hfc_usb.c
blob678bd5224bc338a2767a106fb8057f544f218050
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 "HFC-S USB: submit URB error(%s): status:%i\n",
931 __func__, errcode);
932 fifo->active = 0;
933 fifo->skbuff = NULL;
934 }
935 }
936
937 static void
938 setup_bchannel(hfcusb_data *hfc, int channel, int mode)
939 {
940 __u8 val, idx_table[2] = { 0, 2 };
941
942 if (hfc->disc_flag) {
943 return;
944 }
945 DBG(HFCUSB_DBG_STATES, "HFC-S USB: setting channel %d to mode %d",
946 channel, mode);
947 hfc->b_mode[channel] = mode;
948
949 /* setup CON_HDLC */
950 val = 0;
951 if (mode != L1_MODE_NULL)
952 val = 8; /* enable fifo? */
953 if (mode == L1_MODE_TRANS)
954 val |= 2; /* set transparent bit */
955
956 /* set FIFO to transmit register */
957 queue_control_request(hfc, HFCUSB_FIFO, idx_table[channel], 1);
958 queue_control_request(hfc, HFCUSB_CON_HDLC, val, 1);
959 /* reset fifo */
960 queue_control_request(hfc, HFCUSB_INC_RES_F, 2, 1);
961 /* set FIFO to receive register */
962 queue_control_request(hfc, HFCUSB_FIFO, idx_table[channel] + 1, 1);
963 queue_control_request(hfc, HFCUSB_CON_HDLC, val, 1);
964 /* reset fifo */
965 queue_control_request(hfc, HFCUSB_INC_RES_F, 2, 1);
966
967 val = 0x40;
968 if (hfc->b_mode[0])
969 val |= 1;
970 if (hfc->b_mode[1])
971 val |= 2;
972 queue_control_request(hfc, HFCUSB_SCTRL, val, 1);
973
974 val = 0;
975 if (hfc->b_mode[0])
976 val |= 1;
977 if (hfc->b_mode[1])
978 val |= 2;
979 queue_control_request(hfc, HFCUSB_SCTRL_R, val, 1);
980
981 if (mode == L1_MODE_NULL) {
982 if (channel)
983 handle_led(hfc, LED_B2_OFF);
984 else
985 handle_led(hfc, LED_B1_OFF);
986 } else {
987 if (channel)
988 handle_led(hfc, LED_B2_ON);
989 else
990 handle_led(hfc, LED_B1_ON);
991 }
992 }
993
994 static void
995 hfc_usb_l2l1(struct hisax_if *my_hisax_if, int pr, void *arg)
996 {
997 usb_fifo *fifo = my_hisax_if->priv;
998 hfcusb_data *hfc = fifo->hfc;
999
1000 switch (pr) {
1001 case PH_ACTIVATE | REQUEST:
1002 if (fifo->fifonum == HFCUSB_D_TX) {
1003 DBG(HFCUSB_DBG_STATES,
1004 "HFC_USB: hfc_usb_d_l2l1 D-chan: PH_ACTIVATE | REQUEST");
1005
1006 if (hfc->l1_state != 3
1007 && hfc->l1_state != 7) {
1008 hfc->d_if.ifc.l1l2(&hfc->d_if.ifc,
1009 PH_DEACTIVATE |
1010 INDICATION,
1011 NULL);
1012 DBG(HFCUSB_DBG_STATES,
1013 "HFC-S USB: PH_DEACTIVATE | INDICATION sent (not state 3 or 7)");
1014 } else {
1015 if (hfc->l1_state == 7) { /* l1 already active */
1016 hfc->d_if.ifc.l1l2(&hfc->
1017 d_if.
1018 ifc,
1019 PH_ACTIVATE
1020 |
1021 INDICATION,
1022 NULL);
1023 DBG(HFCUSB_DBG_STATES,
1024 "HFC-S USB: PH_ACTIVATE | INDICATION sent again ;)");
1025 } else {
1026 /* force sending sending INFO1 */
1027 queue_control_request(hfc,
1028 HFCUSB_STATES,
1029 0x14,
1030 1);
1031 mdelay(1);
1032 /* start l1 activation */
1033 queue_control_request(hfc,
1034 HFCUSB_STATES,
1035 0x04,
1036 1);
1037 if (!timer_pending
1038 (&hfc->t3_timer)) {
1039 hfc->t3_timer.
1040 expires =
1041 jiffies +
1042 (HFC_TIMER_T3 *
1043 HZ) / 1000;
1044 add_timer(&hfc->
1045 t3_timer);
1046 }
1047 }
1048 }
1049 } else {
1050 DBG(HFCUSB_DBG_STATES,
1051 "HFC_USB: hfc_usb_d_l2l1 B-chan: PH_ACTIVATE | REQUEST");
1052 setup_bchannel(hfc,
1053 (fifo->fifonum ==
1054 HFCUSB_B1_TX) ? 0 : 1,
1055 (long) arg);
1056 fifo->hif->l1l2(fifo->hif,
1057 PH_ACTIVATE | INDICATION,
1058 NULL);
1059 }
1060 break;
1061 case PH_DEACTIVATE | REQUEST:
1062 if (fifo->fifonum == HFCUSB_D_TX) {
1063 DBG(HFCUSB_DBG_STATES,
1064 "HFC_USB: hfc_usb_d_l2l1 D-chan: PH_DEACTIVATE | REQUEST");
1065 } else {
1066 DBG(HFCUSB_DBG_STATES,
1067 "HFC_USB: hfc_usb_d_l2l1 Bx-chan: PH_DEACTIVATE | REQUEST");
1068 setup_bchannel(hfc,
1069 (fifo->fifonum ==
1070 HFCUSB_B1_TX) ? 0 : 1,
1071 (int) L1_MODE_NULL);
1072 fifo->hif->l1l2(fifo->hif,
1073 PH_DEACTIVATE | INDICATION,
1074 NULL);
1075 }
1076 break;
1077 case PH_DATA | REQUEST:
1078 if (fifo->skbuff && fifo->delete_flg) {
1079 dev_kfree_skb_any(fifo->skbuff);
1080 fifo->skbuff = NULL;
1081 fifo->delete_flg = 0;
1082 }
1083 fifo->skbuff = arg; /* we have a new buffer */
1084 break;
1085 default:
1086 DBG(HFCUSB_DBG_STATES,
1087 "HFC_USB: hfc_usb_d_l2l1: unknown state : %#x", pr);
1088 break;
1089 }
1090 }
1091
1092 /* initial init HFC-S USB chip registers, HiSax interface, USB URBs */
1093 static int
1094 hfc_usb_init(hfcusb_data *hfc)
1095 {
1096 usb_fifo *fifo;
1097 int i;
1098 u_char b;
1099 struct hisax_b_if *p_b_if[2];
1100
1101 /* check the chip id */
1102 if (read_usb(hfc, HFCUSB_CHIP_ID, &b) != 1) {
1103 printk(KERN_INFO "HFC-USB: cannot read chip id\n");
1104 return (1);
1105 }
1106 if (b != HFCUSB_CHIPID) {
1107 printk(KERN_INFO "HFC-S USB: Invalid chip id 0x%02x\n", b);
1108 return (1);
1109 }
1110
1111 /* first set the needed config, interface and alternate */
1112 usb_set_interface(hfc->dev, hfc->if_used, hfc->alt_used);
1113
1114 /* do Chip reset */
1115 write_usb(hfc, HFCUSB_CIRM, 8);
1116 /* aux = output, reset off */
1117 write_usb(hfc, HFCUSB_CIRM, 0x10);
1118
1119 /* set USB_SIZE to match wMaxPacketSize for INT or BULK transfers */
1120 write_usb(hfc, HFCUSB_USB_SIZE,
1121 (hfc->packet_size / 8) | ((hfc->packet_size / 8) << 4));
1122
1123 /* set USB_SIZE_I to match wMaxPacketSize for ISO transfers */
1124 write_usb(hfc, HFCUSB_USB_SIZE_I, hfc->iso_packet_size);
1125
1126 /* enable PCM/GCI master mode */
1127 write_usb(hfc, HFCUSB_MST_MODE1, 0); /* set default values */
1128 write_usb(hfc, HFCUSB_MST_MODE0, 1); /* enable master mode */
1129
1130 /* init the fifos */
1131 write_usb(hfc, HFCUSB_F_THRES,
1132 (HFCUSB_TX_THRESHOLD /
1133 8) | ((HFCUSB_RX_THRESHOLD / 8) << 4));
1134
1135 fifo = hfc->fifos;
1136 for (i = 0; i < HFCUSB_NUM_FIFOS; i++) {
1137 write_usb(hfc, HFCUSB_FIFO, i); /* select the desired fifo */
1138 fifo[i].skbuff = NULL; /* init buffer pointer */
1139 fifo[i].max_size =
1140 (i <= HFCUSB_B2_RX) ? MAX_BCH_SIZE : MAX_DFRAME_LEN;
1141 fifo[i].last_urblen = 0;
1142 /* set 2 bit for D- & E-channel */
1143 write_usb(hfc, HFCUSB_HDLC_PAR,
1144 ((i <= HFCUSB_B2_RX) ? 0 : 2));
1145 /* rx hdlc, enable IFF for D-channel */
1146 write_usb(hfc, HFCUSB_CON_HDLC,
1147 ((i == HFCUSB_D_TX) ? 0x09 : 0x08));
1148 write_usb(hfc, HFCUSB_INC_RES_F, 2); /* reset the fifo */
1149 }
1150
1151 write_usb(hfc, HFCUSB_CLKDEL, 0x0f); /* clock delay value */
1152 write_usb(hfc, HFCUSB_STATES, 3 | 0x10); /* set deactivated mode */
1153 write_usb(hfc, HFCUSB_STATES, 3); /* enable state machine */
1154
1155 write_usb(hfc, HFCUSB_SCTRL_R, 0); /* disable both B receivers */
1156 write_usb(hfc, HFCUSB_SCTRL, 0x40); /* disable B transmitters + capacitive mode */
1157
1158 /* set both B-channel to not connected */
1159 hfc->b_mode[0] = L1_MODE_NULL;
1160 hfc->b_mode[1] = L1_MODE_NULL;
1161
1162 hfc->l1_activated = 0;
1163 hfc->disc_flag = 0;
1164 hfc->led_state = 0;
1165 hfc->old_led_state = 0;
1166
1167 /* init the t3 timer */
1168 init_timer(&hfc->t3_timer);
1169 hfc->t3_timer.data = (long) hfc;
1170 hfc->t3_timer.function = (void *) l1_timer_expire_t3;
1171
1172 /* init the t4 timer */
1173 init_timer(&hfc->t4_timer);
1174 hfc->t4_timer.data = (long) hfc;
1175 hfc->t4_timer.function = (void *) l1_timer_expire_t4;
1176
1177 /* init the background machinery for control requests */
1178 hfc->ctrl_read.bRequestType = 0xc0;
1179 hfc->ctrl_read.bRequest = 1;
1180 hfc->ctrl_read.wLength = cpu_to_le16(1);
1181 hfc->ctrl_write.bRequestType = 0x40;
1182 hfc->ctrl_write.bRequest = 0;
1183 hfc->ctrl_write.wLength = 0;
1184 usb_fill_control_urb(hfc->ctrl_urb,
1185 hfc->dev,
1186 hfc->ctrl_out_pipe,
1187 (u_char *)&hfc->ctrl_write,
1188 NULL, 0, ctrl_complete, hfc);
1189 /* Init All Fifos */
1190 for (i = 0; i < HFCUSB_NUM_FIFOS; i++) {
1191 hfc->fifos[i].iso[0].purb = NULL;
1192 hfc->fifos[i].iso[1].purb = NULL;
1193 hfc->fifos[i].active = 0;
1194 }
1195 /* register Modul to upper Hisax Layers */
1196 hfc->d_if.owner = THIS_MODULE;
1197 hfc->d_if.ifc.priv = &hfc->fifos[HFCUSB_D_TX];
1198 hfc->d_if.ifc.l2l1 = hfc_usb_l2l1;
1199 for (i = 0; i < 2; i++) {
1200 hfc->b_if[i].ifc.priv = &hfc->fifos[HFCUSB_B1_TX + i * 2];
1201 hfc->b_if[i].ifc.l2l1 = hfc_usb_l2l1;
1202 p_b_if[i] = &hfc->b_if[i];
1203 }
1204 /* default Prot: EURO ISDN, should be a module_param */
1205 hfc->protocol = 2;
1206 i = hisax_register(&hfc->d_if, p_b_if, "hfc_usb", hfc->protocol);
1207 if (i) {
1208 printk(KERN_INFO "HFC-S USB: hisax_register -> %d\n", i);
1209 return i;
1210 }
1211
1212 #ifdef CONFIG_HISAX_DEBUG
1213 hfc_debug = debug;
1214 #endif
1215
1216 for (i = 0; i < 4; i++)
1217 hfc->fifos[i].hif = &p_b_if[i / 2]->ifc;
1218 for (i = 4; i < 8; i++)
1219 hfc->fifos[i].hif = &hfc->d_if.ifc;
1220
1221 /* 3 (+1) INT IN + 3 ISO OUT */
1222 if (hfc->cfg_used == CNF_3INT3ISO || hfc->cfg_used == CNF_4INT3ISO) {
1223 start_int_fifo(hfc->fifos + HFCUSB_D_RX);
1224 if (hfc->fifos[HFCUSB_PCM_RX].pipe)
1225 start_int_fifo(hfc->fifos + HFCUSB_PCM_RX);
1226 start_int_fifo(hfc->fifos + HFCUSB_B1_RX);
1227 start_int_fifo(hfc->fifos + HFCUSB_B2_RX);
1228 }
1229 /* 3 (+1) ISO IN + 3 ISO OUT */
1230 if (hfc->cfg_used == CNF_3ISO3ISO || hfc->cfg_used == CNF_4ISO3ISO) {
1231 start_isoc_chain(hfc->fifos + HFCUSB_D_RX, ISOC_PACKETS_D,
1232 rx_iso_complete, 16);
1233 if (hfc->fifos[HFCUSB_PCM_RX].pipe)
1234 start_isoc_chain(hfc->fifos + HFCUSB_PCM_RX,
1235 ISOC_PACKETS_D, rx_iso_complete,
1236 16);
1237 start_isoc_chain(hfc->fifos + HFCUSB_B1_RX, ISOC_PACKETS_B,
1238 rx_iso_complete, 16);
1239 start_isoc_chain(hfc->fifos + HFCUSB_B2_RX, ISOC_PACKETS_B,
1240 rx_iso_complete, 16);
1241 }
1242
1243 start_isoc_chain(hfc->fifos + HFCUSB_D_TX, ISOC_PACKETS_D,
1244 tx_iso_complete, 1);
1245 start_isoc_chain(hfc->fifos + HFCUSB_B1_TX, ISOC_PACKETS_B,
1246 tx_iso_complete, 1);
1247 start_isoc_chain(hfc->fifos + HFCUSB_B2_TX, ISOC_PACKETS_B,
1248 tx_iso_complete, 1);
1249
1250 handle_led(hfc, LED_POWER_ON);
1251
1252 return (0);
1253 }
1254
1255 /* initial callback for each plugged USB device */
1256 static int
1257 hfc_usb_probe(struct usb_interface *intf, const struct usb_device_id *id)
1258 {
1259 struct usb_device *dev = interface_to_usbdev(intf);
1260 hfcusb_data *context;
1261 struct usb_host_interface *iface = intf->cur_altsetting;
1262 struct usb_host_interface *iface_used = NULL;
1263 struct usb_host_endpoint *ep;
1264 int ifnum = iface->desc.bInterfaceNumber;
1265 int i, idx, alt_idx, probe_alt_setting, vend_idx, cfg_used, *vcf,
1266 attr, cfg_found, cidx, ep_addr;
1267 int cmptbl[16], small_match, iso_packet_size, packet_size,
1268 alt_used = 0;
1269 hfcsusb_vdata *driver_info;
1270
1271 vend_idx = 0xffff;
1272 for (i = 0; hfcusb_idtab[i].idVendor; i++) {
1273 if ((le16_to_cpu(dev->descriptor.idVendor) == hfcusb_idtab[i].idVendor)
1274 && (le16_to_cpu(dev->descriptor.idProduct) == hfcusb_idtab[i].idProduct)) {
1275 vend_idx = i;
1276 continue;
1277 }
1278 }
1279
1280 printk(KERN_INFO
1281 "HFC-S USB: probing interface(%d) actalt(%d) minor(%d)\n",
1282 ifnum, iface->desc.bAlternateSetting, intf->minor);
1283
1284 if (vend_idx != 0xffff) {
1285 /* if vendor and product ID is OK, start probing alternate settings */
1286 alt_idx = 0;
1287 small_match = 0xffff;
1288
1289 /* default settings */
1290 iso_packet_size = 16;
1291 packet_size = 64;
1292
1293 while (alt_idx < intf->num_altsetting) {
1294 iface = intf->altsetting + alt_idx;
1295 probe_alt_setting = iface->desc.bAlternateSetting;
1296 cfg_used = 0;
1297
1298 /* check for config EOL element */
1299 while (validconf[cfg_used][0]) {
1300 cfg_found = 1;
1301 vcf = validconf[cfg_used];
1302 /* first endpoint descriptor */
1303 ep = iface->endpoint;
1304
1305 memcpy(cmptbl, vcf, 16 * sizeof(int));
1306
1307 /* check for all endpoints in this alternate setting */
1308 for (i = 0; i < iface->desc.bNumEndpoints;
1309 i++) {
1310 ep_addr =
1311 ep->desc.bEndpointAddress;
1312 /* get endpoint base */
1313 idx = ((ep_addr & 0x7f) - 1) * 2;
1314 if (ep_addr & 0x80)
1315 idx++;
1316 attr = ep->desc.bmAttributes;
1317 if (cmptbl[idx] == EP_NUL) {
1318 cfg_found = 0;
1319 }
1320 if (attr == USB_ENDPOINT_XFER_INT
1321 && cmptbl[idx] == EP_INT)
1322 cmptbl[idx] = EP_NUL;
1323 if (attr == USB_ENDPOINT_XFER_BULK
1324 && cmptbl[idx] == EP_BLK)
1325 cmptbl[idx] = EP_NUL;
1326 if (attr == USB_ENDPOINT_XFER_ISOC
1327 && cmptbl[idx] == EP_ISO)
1328 cmptbl[idx] = EP_NUL;
1329
1330 /* check if all INT endpoints match minimum interval */
1331 if ((attr == USB_ENDPOINT_XFER_INT)
1332 && (ep->desc.bInterval < vcf[17])) {
1333 cfg_found = 0;
1334 }
1335 ep++;
1336 }
1337 for (i = 0; i < 16; i++) {
1338 /* all entries must be EP_NOP or EP_NUL for a valid config */
1339 if (cmptbl[i] != EP_NOP
1340 && cmptbl[i] != EP_NUL)
1341 cfg_found = 0;
1342 }
1343 if (cfg_found) {
1344 if (cfg_used < small_match) {
1345 small_match = cfg_used;
1346 alt_used =
1347 probe_alt_setting;
1348 iface_used = iface;
1349 }
1350 }
1351 cfg_used++;
1352 }
1353 alt_idx++;
1354 } /* (alt_idx < intf->num_altsetting) */
1355
1356 /* found a valid USB Ta Endpint config */
1357 if (small_match != 0xffff) {
1358 iface = iface_used;
1359 if (!(context = kzalloc(sizeof(hfcusb_data), GFP_KERNEL)))
1360 return (-ENOMEM); /* got no mem */
1361
1362 ep = iface->endpoint;
1363 vcf = validconf[small_match];
1364
1365 for (i = 0; i < iface->desc.bNumEndpoints; i++) {
1366 ep_addr = ep->desc.bEndpointAddress;
1367 /* get endpoint base */
1368 idx = ((ep_addr & 0x7f) - 1) * 2;
1369 if (ep_addr & 0x80)
1370 idx++;
1371 cidx = idx & 7;
1372 attr = ep->desc.bmAttributes;
1373
1374 /* init Endpoints */
1375 if (vcf[idx] != EP_NOP
1376 && vcf[idx] != EP_NUL) {
1377 switch (attr) {
1378 case USB_ENDPOINT_XFER_INT:
1379 context->
1380 fifos[cidx].
1381 pipe =
1382 usb_rcvintpipe
1383 (dev,
1384 ep->desc.
1385 bEndpointAddress);
1386 context->
1387 fifos[cidx].
1388 usb_transfer_mode
1389 = USB_INT;
1390 packet_size =
1391 le16_to_cpu(ep->desc.wMaxPacketSize);
1392 break;
1393 case USB_ENDPOINT_XFER_BULK:
1394 if (ep_addr & 0x80)
1395 context->
1396 fifos
1397 [cidx].
1398 pipe =
1399 usb_rcvbulkpipe
1400 (dev,
1401 ep->
1402 desc.
1403 bEndpointAddress);
1404 else
1405 context->
1406 fifos
1407 [cidx].
1408 pipe =
1409 usb_sndbulkpipe
1410 (dev,
1411 ep->
1412 desc.
1413 bEndpointAddress);
1414 context->
1415 fifos[cidx].
1416 usb_transfer_mode
1417 = USB_BULK;
1418 packet_size =
1419 le16_to_cpu(ep->desc.wMaxPacketSize);
1420 break;
1421 case USB_ENDPOINT_XFER_ISOC:
1422 if (ep_addr & 0x80)
1423 context->
1424 fifos
1425 [cidx].
1426 pipe =
1427 usb_rcvisocpipe
1428 (dev,
1429 ep->
1430 desc.
1431 bEndpointAddress);
1432 else
1433 context->
1434 fifos
1435 [cidx].
1436 pipe =
1437 usb_sndisocpipe
1438 (dev,
1439 ep->
1440 desc.
1441 bEndpointAddress);
1442 context->
1443 fifos[cidx].
1444 usb_transfer_mode
1445 = USB_ISOC;
1446 iso_packet_size =
1447 le16_to_cpu(ep->desc.wMaxPacketSize);
1448 break;
1449 default:
1450 context->
1451 fifos[cidx].
1452 pipe = 0;
1453 } /* switch attribute */
1454
1455 if (context->fifos[cidx].pipe) {
1456 context->fifos[cidx].
1457 fifonum = cidx;
1458 context->fifos[cidx].hfc =
1459 context;
1460 context->fifos[cidx].usb_packet_maxlen =
1461 le16_to_cpu(ep->desc.wMaxPacketSize);
1462 context->fifos[cidx].
1463 intervall =
1464 ep->desc.bInterval;
1465 context->fifos[cidx].
1466 skbuff = NULL;
1467 }
1468 }
1469 ep++;
1470 }
1471 context->dev = dev; /* save device */
1472 context->if_used = ifnum; /* save used interface */
1473 context->alt_used = alt_used; /* and alternate config */
1474 context->ctrl_paksize = dev->descriptor.bMaxPacketSize0; /* control size */
1475 context->cfg_used = vcf[16]; /* store used config */
1476 context->vend_idx = vend_idx; /* store found vendor */
1477 context->packet_size = packet_size;
1478 context->iso_packet_size = iso_packet_size;
1479
1480 /* create the control pipes needed for register access */
1481 context->ctrl_in_pipe =
1482 usb_rcvctrlpipe(context->dev, 0);
1483 context->ctrl_out_pipe =
1484 usb_sndctrlpipe(context->dev, 0);
1485
1486 driver_info = (hfcsusb_vdata *)
1487 hfcusb_idtab[vend_idx].driver_info;
1488
1489 context->ctrl_urb = usb_alloc_urb(0, GFP_KERNEL);
1490
1491 if (!context->ctrl_urb) {
1492 pr_warn("%s: No memory for control urb\n",
1493 driver_info->vend_name);
1494 kfree(context);
1495 return -ENOMEM;
1496 }
1497
1498 pr_info("HFC-S USB: detected \"%s\"\n",
1499 driver_info->vend_name);
1500
1501 DBG(HFCUSB_DBG_INIT,
1502 "HFC-S USB: Endpoint-Config: %s (if=%d alt=%d), E-Channel(%d)",
1503 conf_str[small_match], context->if_used,
1504 context->alt_used,
1505 validconf[small_match][18]);
1506
1507 /* init the chip and register the driver */
1508 if (hfc_usb_init(context)) {
1509 usb_kill_urb(context->ctrl_urb);
1510 usb_free_urb(context->ctrl_urb);
1511 context->ctrl_urb = NULL;
1512 kfree(context);
1513 return (-EIO);
1514 }
1515 usb_set_intfdata(intf, context);
1516 return (0);
1517 }
1518 } else {
1519 printk(KERN_INFO
1520 "HFC-S USB: no valid vendor found in USB descriptor\n");
1521 }
1522 return (-EIO);
1523 }
1524
1525 /* callback for unplugged USB device */
1526 static void
1527 hfc_usb_disconnect(struct usb_interface *intf)
1528 {
1529 hfcusb_data *context = usb_get_intfdata(intf);
1530 int i;
1531
1532 handle_led(context, LED_POWER_OFF);
1533 schedule_timeout(HZ / 100);
1534
1535 printk(KERN_INFO "HFC-S USB: device disconnect\n");
1536 context->disc_flag = 1;
1537 usb_set_intfdata(intf, NULL);
1538
1539 if (timer_pending(&context->t3_timer))
1540 del_timer(&context->t3_timer);
1541 if (timer_pending(&context->t4_timer))
1542 del_timer(&context->t4_timer);
1543
1544 /* tell all fifos to terminate */
1545 for (i = 0; i < HFCUSB_NUM_FIFOS; i++) {
1546 if (context->fifos[i].usb_transfer_mode == USB_ISOC) {
1547 if (context->fifos[i].active > 0) {
1548 stop_isoc_chain(&context->fifos[i]);
1549 DBG(HFCUSB_DBG_INIT,
1550 "HFC-S USB: %s stopping ISOC chain Fifo(%i)",
1551 __func__, i);
1552 }
1553 } else {
1554 if (context->fifos[i].active > 0) {
1555 context->fifos[i].active = 0;
1556 DBG(HFCUSB_DBG_INIT,
1557 "HFC-S USB: %s unlinking URB for Fifo(%i)",
1558 __func__, i);
1559 }
1560 usb_kill_urb(context->fifos[i].urb);
1561 usb_free_urb(context->fifos[i].urb);
1562 context->fifos[i].urb = NULL;
1563 }
1564 context->fifos[i].active = 0;
1565 }
1566 usb_kill_urb(context->ctrl_urb);
1567 usb_free_urb(context->ctrl_urb);
1568 context->ctrl_urb = NULL;
1569 hisax_unregister(&context->d_if);
1570 kfree(context); /* free our structure again */
1571 }
1572
1573 static struct usb_driver hfc_drv = {
1574 .name = "hfc_usb",
1575 .id_table = hfcusb_idtab,
1576 .probe = hfc_usb_probe,
1577 .disconnect = hfc_usb_disconnect,
1578 .disable_hub_initiated_lpm = 1,
1579 };
1580
1581 static void __exit
1582 hfc_usb_mod_exit(void)
1583 {
1584 usb_deregister(&hfc_drv); /* release our driver */
1585 printk(KERN_INFO "HFC-S USB: module removed\n");
1586 }
1587
1588 static int __init
1589 hfc_usb_mod_init(void)
1590 {
1591 char revstr[30], datestr[30], dummy[30];
1592 #ifndef CONFIG_HISAX_DEBUG
1593 hfc_debug = debug;
1594 #endif
1595 sscanf(hfcusb_revision,
1596 "%s %s $ %s %s %s $ ", dummy, revstr,
1597 dummy, datestr, dummy);
1598 printk(KERN_INFO
1599 "HFC-S USB: driver module revision %s date %s loaded, (debug=%i)\n",
1600 revstr, datestr, debug);
1601 if (usb_register(&hfc_drv)) {
1602 printk(KERN_INFO
1603 "HFC-S USB: Unable to register HFC-S USB module at usb stack\n");
1604 return (-1); /* unable to register */
1605 }
1606 return (0);
1607 }
1608
1609 module_init(hfc_usb_mod_init);
1610 module_exit(hfc_usb_mod_exit);
1611 MODULE_AUTHOR(DRIVER_AUTHOR);
1612 MODULE_DESCRIPTION(DRIVER_DESC);
1613 MODULE_LICENSE("GPL");
1614 MODULE_DEVICE_TABLE(usb, hfcusb_idtab);
Linux with added FPC-III support