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Commit | Line | Data |
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1da177e4 LT |
1 | /* |
2 | * Driver for ST5481 USB ISDN modem | |
3 | * | |
4 | * Author Frode Isaksen | |
5 | * Copyright 2001 by Frode Isaksen <fisaksen@bewan.com> | |
6 | * 2001 by Kai Germaschewski <kai.germaschewski@gmx.de> | |
7 | * | |
8 | * This software may be used and distributed according to the terms | |
9 | * of the GNU General Public License, incorporated herein by reference. | |
10 | * | |
11 | */ | |
12 | ||
13 | #include <linux/init.h> | |
14 | #include <linux/usb.h> | |
15 | #include <linux/slab.h> | |
16 | #include <linux/netdevice.h> | |
17 | #include "st5481.h" | |
18 | ||
19 | static void ph_connect(struct st5481_adapter *adapter); | |
20 | static void ph_disconnect(struct st5481_adapter *adapter); | |
21 | ||
22 | static struct Fsm l1fsm; | |
23 | ||
24 | static char *strL1State[] = | |
25 | { | |
26 | "ST_L1_F3", | |
27 | "ST_L1_F4", | |
28 | "ST_L1_F6", | |
29 | "ST_L1_F7", | |
30 | "ST_L1_F8", | |
31 | }; | |
32 | ||
33 | static char *strL1Event[] = | |
34 | { | |
35 | "EV_IND_DP", | |
36 | "EV_IND_1", | |
37 | "EV_IND_2", | |
38 | "EV_IND_3", | |
39 | "EV_IND_RSY", | |
40 | "EV_IND_5", | |
41 | "EV_IND_6", | |
42 | "EV_IND_7", | |
43 | "EV_IND_AP", | |
44 | "EV_IND_9", | |
45 | "EV_IND_10", | |
46 | "EV_IND_11", | |
47 | "EV_IND_AI8", | |
48 | "EV_IND_AI10", | |
49 | "EV_IND_AIL", | |
50 | "EV_IND_DI", | |
51 | "EV_PH_ACTIVATE_REQ", | |
52 | "EV_PH_DEACTIVATE_REQ", | |
53 | "EV_TIMER3", | |
54 | }; | |
55 | ||
56 | static inline void D_L1L2(struct st5481_adapter *adapter, int pr, void *arg) | |
57 | { | |
58 | struct hisax_if *ifc = (struct hisax_if *) &adapter->hisax_d_if; | |
59 | ||
60 | ifc->l1l2(ifc, pr, arg); | |
61 | } | |
62 | ||
63 | static void | |
64 | l1_go_f3(struct FsmInst *fi, int event, void *arg) | |
65 | { | |
66 | struct st5481_adapter *adapter = fi->userdata; | |
67 | ||
68 | if (fi->state == ST_L1_F7) | |
69 | ph_disconnect(adapter); | |
70 | ||
71 | FsmChangeState(fi, ST_L1_F3); | |
72 | D_L1L2(adapter, PH_DEACTIVATE | INDICATION, NULL); | |
73 | } | |
74 | ||
75 | static void | |
76 | l1_go_f6(struct FsmInst *fi, int event, void *arg) | |
77 | { | |
78 | struct st5481_adapter *adapter = fi->userdata; | |
79 | ||
80 | if (fi->state == ST_L1_F7) | |
81 | ph_disconnect(adapter); | |
82 | ||
83 | FsmChangeState(fi, ST_L1_F6); | |
84 | } | |
85 | ||
86 | static void | |
87 | l1_go_f7(struct FsmInst *fi, int event, void *arg) | |
88 | { | |
89 | struct st5481_adapter *adapter = fi->userdata; | |
90 | ||
91 | FsmDelTimer(&adapter->timer, 0); | |
92 | ph_connect(adapter); | |
93 | FsmChangeState(fi, ST_L1_F7); | |
94 | D_L1L2(adapter, PH_ACTIVATE | INDICATION, NULL); | |
95 | } | |
96 | ||
97 | static void | |
98 | l1_go_f8(struct FsmInst *fi, int event, void *arg) | |
99 | { | |
100 | struct st5481_adapter *adapter = fi->userdata; | |
101 | ||
102 | if (fi->state == ST_L1_F7) | |
103 | ph_disconnect(adapter); | |
104 | ||
105 | FsmChangeState(fi, ST_L1_F8); | |
106 | } | |
107 | ||
108 | static void | |
109 | l1_timer3(struct FsmInst *fi, int event, void *arg) | |
110 | { | |
111 | struct st5481_adapter *adapter = fi->userdata; | |
112 | ||
113 | st5481_ph_command(adapter, ST5481_CMD_DR); | |
114 | FsmChangeState(fi, ST_L1_F3); | |
115 | D_L1L2(adapter, PH_DEACTIVATE | INDICATION, NULL); | |
116 | } | |
117 | ||
118 | static void | |
119 | l1_ignore(struct FsmInst *fi, int event, void *arg) | |
120 | { | |
121 | } | |
122 | ||
123 | static void | |
124 | l1_activate(struct FsmInst *fi, int event, void *arg) | |
125 | { | |
126 | struct st5481_adapter *adapter = fi->userdata; | |
127 | ||
128 | st5481_ph_command(adapter, ST5481_CMD_DR); | |
129 | st5481_ph_command(adapter, ST5481_CMD_PUP); | |
130 | FsmRestartTimer(&adapter->timer, TIMER3_VALUE, EV_TIMER3, NULL, 2); | |
131 | st5481_ph_command(adapter, ST5481_CMD_AR8); | |
132 | FsmChangeState(fi, ST_L1_F4); | |
133 | } | |
134 | ||
135 | static struct FsmNode L1FnList[] __initdata = | |
136 | { | |
137 | {ST_L1_F3, EV_IND_DP, l1_ignore}, | |
138 | {ST_L1_F3, EV_IND_AP, l1_go_f6}, | |
139 | {ST_L1_F3, EV_IND_AI8, l1_go_f7}, | |
140 | {ST_L1_F3, EV_IND_AI10, l1_go_f7}, | |
141 | {ST_L1_F3, EV_PH_ACTIVATE_REQ, l1_activate}, | |
142 | ||
143 | {ST_L1_F4, EV_TIMER3, l1_timer3}, | |
144 | {ST_L1_F4, EV_IND_DP, l1_go_f3}, | |
145 | {ST_L1_F4, EV_IND_AP, l1_go_f6}, | |
146 | {ST_L1_F4, EV_IND_AI8, l1_go_f7}, | |
147 | {ST_L1_F4, EV_IND_AI10, l1_go_f7}, | |
148 | ||
149 | {ST_L1_F6, EV_TIMER3, l1_timer3}, | |
150 | {ST_L1_F6, EV_IND_DP, l1_go_f3}, | |
151 | {ST_L1_F6, EV_IND_AP, l1_ignore}, | |
152 | {ST_L1_F6, EV_IND_AI8, l1_go_f7}, | |
153 | {ST_L1_F6, EV_IND_AI10, l1_go_f7}, | |
154 | {ST_L1_F7, EV_IND_RSY, l1_go_f8}, | |
155 | ||
156 | {ST_L1_F7, EV_IND_DP, l1_go_f3}, | |
157 | {ST_L1_F7, EV_IND_AP, l1_go_f6}, | |
158 | {ST_L1_F7, EV_IND_AI8, l1_ignore}, | |
159 | {ST_L1_F7, EV_IND_AI10, l1_ignore}, | |
160 | {ST_L1_F7, EV_IND_RSY, l1_go_f8}, | |
161 | ||
162 | {ST_L1_F8, EV_TIMER3, l1_timer3}, | |
163 | {ST_L1_F8, EV_IND_DP, l1_go_f3}, | |
164 | {ST_L1_F8, EV_IND_AP, l1_go_f6}, | |
165 | {ST_L1_F8, EV_IND_AI8, l1_go_f8}, | |
166 | {ST_L1_F8, EV_IND_AI10, l1_go_f8}, | |
167 | {ST_L1_F8, EV_IND_RSY, l1_ignore}, | |
168 | }; | |
169 | ||
170 | static void l1m_debug(struct FsmInst *fi, char *fmt, ...) | |
171 | { | |
172 | va_list args; | |
173 | char buf[256]; | |
174 | ||
175 | va_start(args, fmt); | |
176 | vsprintf(buf, fmt, args); | |
177 | DBG(8, "%s", buf); | |
178 | va_end(args); | |
179 | } | |
180 | ||
181 | /* ====================================================================== | |
182 | * D-Channel out | |
183 | */ | |
184 | ||
185 | /* | |
186 | D OUT state machine: | |
187 | ==================== | |
188 | ||
189 | Transmit short frame (< 16 bytes of encoded data): | |
190 | ||
191 | L1 FRAME D_OUT_STATE USB D CHANNEL | |
192 | -------- ----------- --- --------- | |
193 | ||
194 | FIXME | |
195 | ||
196 | -> [xx..xx] SHORT_INIT -> [7Exx..xxC1C27EFF] | |
197 | SHORT_WAIT_DEN <> OUT_D_COUNTER=16 | |
198 | ||
199 | END_OF_SHORT <- DEN_EVENT -> 7Exx | |
200 | xxxx | |
201 | xxxx | |
202 | xxxx | |
203 | xxxx | |
204 | xxxx | |
205 | C1C1 | |
206 | 7EFF | |
207 | WAIT_FOR_RESET_IDLE <- D_UNDERRUN <- (8ms) | |
208 | IDLE <> Reset pipe | |
209 | ||
210 | ||
211 | ||
212 | Transmit long frame (>= 16 bytes of encoded data): | |
213 | ||
214 | L1 FRAME D_OUT_STATE USB D CHANNEL | |
215 | -------- ----------- --- --------- | |
216 | ||
217 | -> [xx...xx] IDLE | |
218 | WAIT_FOR_STOP <> OUT_D_COUNTER=0 | |
219 | WAIT_FOR_RESET <> Reset pipe | |
220 | STOP | |
221 | INIT_LONG_FRAME -> [7Exx..xx] | |
222 | WAIT_DEN <> OUT_D_COUNTER=16 | |
223 | OUT_NORMAL <- DEN_EVENT -> 7Exx | |
224 | END_OF_FRAME_BUSY -> [xxxx] xxxx | |
225 | END_OF_FRAME_NOT_BUSY -> [xxxx] xxxx | |
226 | -> [xxxx] xxxx | |
227 | -> [C1C2] xxxx | |
228 | -> [7EFF] xxxx | |
229 | xxxx | |
230 | xxxx | |
231 | .... | |
232 | xxxx | |
233 | C1C2 | |
234 | 7EFF | |
235 | <- D_UNDERRUN <- (> 8ms) | |
236 | WAIT_FOR_STOP <> OUT_D_COUNTER=0 | |
237 | WAIT_FOR_RESET <> Reset pipe | |
238 | STOP | |
239 | ||
240 | */ | |
241 | ||
242 | static struct Fsm dout_fsm; | |
243 | ||
244 | static char *strDoutState[] = | |
245 | { | |
246 | "ST_DOUT_NONE", | |
247 | ||
248 | "ST_DOUT_SHORT_INIT", | |
249 | "ST_DOUT_SHORT_WAIT_DEN", | |
250 | ||
251 | "ST_DOUT_LONG_INIT", | |
252 | "ST_DOUT_LONG_WAIT_DEN", | |
253 | "ST_DOUT_NORMAL", | |
254 | ||
255 | "ST_DOUT_WAIT_FOR_UNDERRUN", | |
256 | "ST_DOUT_WAIT_FOR_NOT_BUSY", | |
257 | "ST_DOUT_WAIT_FOR_STOP", | |
258 | "ST_DOUT_WAIT_FOR_RESET", | |
259 | }; | |
260 | ||
261 | static char *strDoutEvent[] = | |
262 | { | |
263 | "EV_DOUT_START_XMIT", | |
264 | "EV_DOUT_COMPLETE", | |
265 | "EV_DOUT_DEN", | |
266 | "EV_DOUT_RESETED", | |
267 | "EV_DOUT_STOPPED", | |
268 | "EV_DOUT_COLL", | |
269 | "EV_DOUT_UNDERRUN", | |
270 | }; | |
271 | ||
272 | static void dout_debug(struct FsmInst *fi, char *fmt, ...) | |
273 | { | |
274 | va_list args; | |
275 | char buf[256]; | |
276 | ||
277 | va_start(args, fmt); | |
278 | vsprintf(buf, fmt, args); | |
279 | DBG(0x2, "%s", buf); | |
280 | va_end(args); | |
281 | } | |
282 | ||
283 | static void dout_stop_event(void *context) | |
284 | { | |
285 | struct st5481_adapter *adapter = context; | |
286 | ||
287 | FsmEvent(&adapter->d_out.fsm, EV_DOUT_STOPPED, NULL); | |
288 | } | |
289 | ||
290 | /* | |
291 | * Start the transfer of a D channel frame. | |
292 | */ | |
293 | static void usb_d_out(struct st5481_adapter *adapter, int buf_nr) | |
294 | { | |
295 | struct st5481_d_out *d_out = &adapter->d_out; | |
296 | struct urb *urb; | |
297 | unsigned int num_packets, packet_offset; | |
298 | int len, buf_size, bytes_sent; | |
299 | struct sk_buff *skb; | |
300 | struct usb_iso_packet_descriptor *desc; | |
301 | ||
302 | if (d_out->fsm.state != ST_DOUT_NORMAL) | |
303 | return; | |
304 | ||
305 | if (test_and_set_bit(buf_nr, &d_out->busy)) { | |
306 | DBG(2, "ep %d urb %d busy %#lx", EP_D_OUT, buf_nr, d_out->busy); | |
307 | return; | |
308 | } | |
309 | urb = d_out->urb[buf_nr]; | |
310 | ||
311 | skb = d_out->tx_skb; | |
312 | ||
313 | buf_size = NUM_ISO_PACKETS_D * SIZE_ISO_PACKETS_D_OUT; | |
314 | ||
315 | if (skb) { | |
316 | len = isdnhdlc_encode(&d_out->hdlc_state, | |
317 | skb->data, skb->len, &bytes_sent, | |
318 | urb->transfer_buffer, buf_size); | |
319 | skb_pull(skb,bytes_sent); | |
320 | } else { | |
321 | // Send flags or idle | |
322 | len = isdnhdlc_encode(&d_out->hdlc_state, | |
323 | NULL, 0, &bytes_sent, | |
324 | urb->transfer_buffer, buf_size); | |
325 | } | |
326 | ||
327 | if (len < buf_size) { | |
328 | FsmChangeState(&d_out->fsm, ST_DOUT_WAIT_FOR_UNDERRUN); | |
329 | } | |
330 | if (skb && !skb->len) { | |
331 | d_out->tx_skb = NULL; | |
332 | D_L1L2(adapter, PH_DATA | CONFIRM, NULL); | |
333 | dev_kfree_skb_any(skb); | |
334 | } | |
335 | ||
336 | // Prepare the URB | |
337 | urb->transfer_buffer_length = len; | |
338 | num_packets = 0; | |
339 | packet_offset = 0; | |
340 | while (packet_offset < len) { | |
341 | desc = &urb->iso_frame_desc[num_packets]; | |
342 | desc->offset = packet_offset; | |
343 | desc->length = SIZE_ISO_PACKETS_D_OUT; | |
344 | if (len - packet_offset < desc->length) | |
345 | desc->length = len - packet_offset; | |
346 | num_packets++; | |
347 | packet_offset += desc->length; | |
348 | } | |
349 | urb->number_of_packets = num_packets; | |
350 | ||
351 | // Prepare the URB | |
352 | urb->dev = adapter->usb_dev; | |
353 | // Need to transmit the next buffer 2ms after the DEN_EVENT | |
354 | urb->transfer_flags = 0; | |
355 | urb->start_frame = usb_get_current_frame_number(adapter->usb_dev)+2; | |
356 | ||
357 | DBG_ISO_PACKET(0x20,urb); | |
358 | ||
359 | if (usb_submit_urb(urb, GFP_KERNEL) < 0) { | |
360 | // There is another URB queued up | |
361 | urb->transfer_flags = URB_ISO_ASAP; | |
362 | SUBMIT_URB(urb, GFP_KERNEL); | |
363 | } | |
364 | } | |
365 | ||
366 | static void fifo_reseted(void *context) | |
367 | { | |
368 | struct st5481_adapter *adapter = context; | |
369 | ||
370 | FsmEvent(&adapter->d_out.fsm, EV_DOUT_RESETED, NULL); | |
371 | } | |
372 | ||
373 | static void usb_d_out_complete(struct urb *urb, struct pt_regs *regs) | |
374 | { | |
375 | struct st5481_adapter *adapter = urb->context; | |
376 | struct st5481_d_out *d_out = &adapter->d_out; | |
377 | int buf_nr; | |
378 | ||
379 | DBG(2, ""); | |
380 | ||
381 | buf_nr = get_buf_nr(d_out->urb, urb); | |
382 | test_and_clear_bit(buf_nr, &d_out->busy); | |
383 | ||
384 | if (unlikely(urb->status < 0)) { | |
385 | if (urb->status != -ENOENT && urb->status != -ESHUTDOWN) { | |
386 | WARN("urb status %d",urb->status); | |
387 | if (d_out->busy == 0) { | |
388 | st5481_usb_pipe_reset(adapter, EP_D_OUT | USB_DIR_OUT, fifo_reseted, adapter); | |
389 | } | |
390 | return; | |
391 | } else { | |
392 | DBG(1,"urb killed"); | |
393 | return; // Give up | |
394 | } | |
395 | } | |
396 | ||
397 | FsmEvent(&adapter->d_out.fsm, EV_DOUT_COMPLETE, (void *) buf_nr); | |
398 | } | |
399 | ||
400 | /* ====================================================================== */ | |
401 | ||
402 | static void dout_start_xmit(struct FsmInst *fsm, int event, void *arg) | |
403 | { | |
404 | // FIXME unify? | |
405 | struct st5481_adapter *adapter = fsm->userdata; | |
406 | struct st5481_d_out *d_out = &adapter->d_out; | |
407 | struct urb *urb; | |
408 | int len, bytes_sent; | |
409 | struct sk_buff *skb; | |
410 | int buf_nr = 0; | |
411 | ||
412 | skb = d_out->tx_skb; | |
413 | ||
414 | DBG(2,"len=%d",skb->len); | |
415 | ||
416 | isdnhdlc_out_init(&d_out->hdlc_state, 1, 0); | |
417 | ||
418 | if (test_and_set_bit(buf_nr, &d_out->busy)) { | |
419 | WARN("ep %d urb %d busy %#lx", EP_D_OUT, buf_nr, d_out->busy); | |
420 | return; | |
421 | } | |
422 | urb = d_out->urb[buf_nr]; | |
423 | ||
424 | DBG_SKB(0x10, skb); | |
425 | len = isdnhdlc_encode(&d_out->hdlc_state, | |
426 | skb->data, skb->len, &bytes_sent, | |
427 | urb->transfer_buffer, 16); | |
428 | skb_pull(skb, bytes_sent); | |
429 | ||
430 | if(len < 16) | |
431 | FsmChangeState(&d_out->fsm, ST_DOUT_SHORT_INIT); | |
432 | else | |
433 | FsmChangeState(&d_out->fsm, ST_DOUT_LONG_INIT); | |
434 | ||
435 | if (skb->len == 0) { | |
436 | d_out->tx_skb = NULL; | |
437 | D_L1L2(adapter, PH_DATA | CONFIRM, NULL); | |
438 | dev_kfree_skb_any(skb); | |
439 | } | |
440 | ||
441 | // Prepare the URB | |
442 | urb->transfer_buffer_length = len; | |
443 | ||
444 | urb->iso_frame_desc[0].offset = 0; | |
445 | urb->iso_frame_desc[0].length = len; | |
446 | urb->number_of_packets = 1; | |
447 | ||
448 | // Prepare the URB | |
449 | urb->dev = adapter->usb_dev; | |
450 | urb->transfer_flags = URB_ISO_ASAP; | |
451 | ||
452 | DBG_ISO_PACKET(0x20,urb); | |
453 | SUBMIT_URB(urb, GFP_KERNEL); | |
454 | } | |
455 | ||
456 | static void dout_short_fifo(struct FsmInst *fsm, int event, void *arg) | |
457 | { | |
458 | struct st5481_adapter *adapter = fsm->userdata; | |
459 | struct st5481_d_out *d_out = &adapter->d_out; | |
460 | ||
461 | FsmChangeState(&d_out->fsm, ST_DOUT_SHORT_WAIT_DEN); | |
462 | st5481_usb_device_ctrl_msg(adapter, OUT_D_COUNTER, 16, NULL, NULL); | |
463 | } | |
464 | ||
465 | static void dout_end_short_frame(struct FsmInst *fsm, int event, void *arg) | |
466 | { | |
467 | struct st5481_adapter *adapter = fsm->userdata; | |
468 | struct st5481_d_out *d_out = &adapter->d_out; | |
469 | ||
470 | FsmChangeState(&d_out->fsm, ST_DOUT_WAIT_FOR_UNDERRUN); | |
471 | } | |
472 | ||
473 | static void dout_long_enable_fifo(struct FsmInst *fsm, int event, void *arg) | |
474 | { | |
475 | struct st5481_adapter *adapter = fsm->userdata; | |
476 | struct st5481_d_out *d_out = &adapter->d_out; | |
477 | ||
478 | st5481_usb_device_ctrl_msg(adapter, OUT_D_COUNTER, 16, NULL, NULL); | |
479 | FsmChangeState(&d_out->fsm, ST_DOUT_LONG_WAIT_DEN); | |
480 | } | |
481 | ||
482 | static void dout_long_den(struct FsmInst *fsm, int event, void *arg) | |
483 | { | |
484 | struct st5481_adapter *adapter = fsm->userdata; | |
485 | struct st5481_d_out *d_out = &adapter->d_out; | |
486 | ||
487 | FsmChangeState(&d_out->fsm, ST_DOUT_NORMAL); | |
488 | usb_d_out(adapter, 0); | |
489 | usb_d_out(adapter, 1); | |
490 | } | |
491 | ||
492 | static void dout_reset(struct FsmInst *fsm, int event, void *arg) | |
493 | { | |
494 | struct st5481_adapter *adapter = fsm->userdata; | |
495 | struct st5481_d_out *d_out = &adapter->d_out; | |
496 | ||
497 | FsmChangeState(&d_out->fsm, ST_DOUT_WAIT_FOR_RESET); | |
498 | st5481_usb_pipe_reset(adapter, EP_D_OUT | USB_DIR_OUT, fifo_reseted, adapter); | |
499 | } | |
500 | ||
501 | static void dout_stop(struct FsmInst *fsm, int event, void *arg) | |
502 | { | |
503 | struct st5481_adapter *adapter = fsm->userdata; | |
504 | struct st5481_d_out *d_out = &adapter->d_out; | |
505 | ||
506 | FsmChangeState(&d_out->fsm, ST_DOUT_WAIT_FOR_STOP); | |
507 | st5481_usb_device_ctrl_msg(adapter, OUT_D_COUNTER, 0, dout_stop_event, adapter); | |
508 | } | |
509 | ||
510 | static void dout_underrun(struct FsmInst *fsm, int event, void *arg) | |
511 | { | |
512 | struct st5481_adapter *adapter = fsm->userdata; | |
513 | struct st5481_d_out *d_out = &adapter->d_out; | |
514 | ||
515 | if (test_bit(0, &d_out->busy) || test_bit(1, &d_out->busy)) { | |
516 | FsmChangeState(&d_out->fsm, ST_DOUT_WAIT_FOR_NOT_BUSY); | |
517 | } else { | |
518 | dout_stop(fsm, event, arg); | |
519 | } | |
520 | } | |
521 | ||
522 | static void dout_check_busy(struct FsmInst *fsm, int event, void *arg) | |
523 | { | |
524 | struct st5481_adapter *adapter = fsm->userdata; | |
525 | struct st5481_d_out *d_out = &adapter->d_out; | |
526 | ||
527 | if (!test_bit(0, &d_out->busy) && !test_bit(1, &d_out->busy)) | |
528 | dout_stop(fsm, event, arg); | |
529 | } | |
530 | ||
531 | static void dout_reseted(struct FsmInst *fsm, int event, void *arg) | |
532 | { | |
533 | struct st5481_adapter *adapter = fsm->userdata; | |
534 | struct st5481_d_out *d_out = &adapter->d_out; | |
535 | ||
536 | FsmChangeState(&d_out->fsm, ST_DOUT_NONE); | |
537 | // FIXME locking | |
538 | if (d_out->tx_skb) | |
539 | FsmEvent(&d_out->fsm, EV_DOUT_START_XMIT, NULL); | |
540 | } | |
541 | ||
542 | static void dout_complete(struct FsmInst *fsm, int event, void *arg) | |
543 | { | |
544 | struct st5481_adapter *adapter = fsm->userdata; | |
545 | int buf_nr = (int) arg; | |
546 | ||
547 | usb_d_out(adapter, buf_nr); | |
548 | } | |
549 | ||
550 | static void dout_ignore(struct FsmInst *fsm, int event, void *arg) | |
551 | { | |
552 | } | |
553 | ||
554 | static struct FsmNode DoutFnList[] __initdata = | |
555 | { | |
556 | {ST_DOUT_NONE, EV_DOUT_START_XMIT, dout_start_xmit}, | |
557 | ||
558 | {ST_DOUT_SHORT_INIT, EV_DOUT_COMPLETE, dout_short_fifo}, | |
559 | ||
560 | {ST_DOUT_SHORT_WAIT_DEN, EV_DOUT_DEN, dout_end_short_frame}, | |
561 | {ST_DOUT_SHORT_WAIT_DEN, EV_DOUT_UNDERRUN, dout_underrun}, | |
562 | ||
563 | {ST_DOUT_LONG_INIT, EV_DOUT_COMPLETE, dout_long_enable_fifo}, | |
564 | ||
565 | {ST_DOUT_LONG_WAIT_DEN, EV_DOUT_DEN, dout_long_den}, | |
566 | {ST_DOUT_LONG_WAIT_DEN, EV_DOUT_UNDERRUN, dout_underrun}, | |
567 | ||
568 | {ST_DOUT_NORMAL, EV_DOUT_UNDERRUN, dout_underrun}, | |
569 | {ST_DOUT_NORMAL, EV_DOUT_COMPLETE, dout_complete}, | |
570 | ||
571 | {ST_DOUT_WAIT_FOR_UNDERRUN, EV_DOUT_UNDERRUN, dout_underrun}, | |
572 | {ST_DOUT_WAIT_FOR_UNDERRUN, EV_DOUT_COMPLETE, dout_ignore}, | |
573 | ||
574 | {ST_DOUT_WAIT_FOR_NOT_BUSY, EV_DOUT_COMPLETE, dout_check_busy}, | |
575 | ||
576 | {ST_DOUT_WAIT_FOR_STOP, EV_DOUT_STOPPED, dout_reset}, | |
577 | ||
578 | {ST_DOUT_WAIT_FOR_RESET, EV_DOUT_RESETED, dout_reseted}, | |
579 | }; | |
580 | ||
581 | void st5481_d_l2l1(struct hisax_if *hisax_d_if, int pr, void *arg) | |
582 | { | |
583 | struct st5481_adapter *adapter = hisax_d_if->priv; | |
584 | struct sk_buff *skb = arg; | |
585 | ||
586 | switch (pr) { | |
587 | case PH_ACTIVATE | REQUEST: | |
588 | FsmEvent(&adapter->l1m, EV_PH_ACTIVATE_REQ, NULL); | |
589 | break; | |
590 | case PH_DEACTIVATE | REQUEST: | |
591 | FsmEvent(&adapter->l1m, EV_PH_DEACTIVATE_REQ, NULL); | |
592 | break; | |
593 | case PH_DATA | REQUEST: | |
594 | DBG(2, "PH_DATA REQUEST len %d", skb->len); | |
595 | if (adapter->d_out.tx_skb) | |
596 | BUG(); | |
597 | ||
598 | adapter->d_out.tx_skb = skb; | |
599 | FsmEvent(&adapter->d_out.fsm, EV_DOUT_START_XMIT, NULL); | |
600 | break; | |
601 | default: | |
602 | WARN("pr %#x\n", pr); | |
603 | break; | |
604 | } | |
605 | } | |
606 | ||
607 | /* ====================================================================== | |
608 | */ | |
609 | ||
610 | /* | |
611 | * Start receiving on the D channel since entered state F7. | |
612 | */ | |
613 | static void ph_connect(struct st5481_adapter *adapter) | |
614 | { | |
615 | struct st5481_d_out *d_out = &adapter->d_out; | |
616 | struct st5481_in *d_in = &adapter->d_in; | |
617 | ||
618 | DBG(8,""); | |
619 | ||
620 | FsmChangeState(&d_out->fsm, ST_DOUT_NONE); | |
621 | ||
622 | // st5481_usb_device_ctrl_msg(adapter, FFMSK_D, OUT_UNDERRUN, NULL, NULL); | |
623 | st5481_usb_device_ctrl_msg(adapter, FFMSK_D, 0xfc, NULL, NULL); | |
624 | st5481_in_mode(d_in, L1_MODE_HDLC); | |
625 | ||
626 | #ifdef LOOPBACK | |
627 | // Turn loopback on (data sent on B and D looped back) | |
628 | st5481_usb_device_ctrl_msg(cs, LBB, 0x04, NULL, NULL); | |
629 | #endif | |
630 | ||
631 | st5481_usb_pipe_reset(adapter, EP_D_OUT | USB_DIR_OUT, NULL, NULL); | |
632 | ||
633 | // Turn on the green LED to tell that we are in state F7 | |
634 | adapter->leds |= GREEN_LED; | |
635 | st5481_usb_device_ctrl_msg(adapter, GPIO_OUT, adapter->leds, NULL, NULL); | |
636 | } | |
637 | ||
638 | /* | |
639 | * Stop receiving on the D channel since not in state F7. | |
640 | */ | |
641 | static void ph_disconnect(struct st5481_adapter *adapter) | |
642 | { | |
643 | DBG(8,""); | |
644 | ||
645 | st5481_in_mode(&adapter->d_in, L1_MODE_NULL); | |
646 | ||
647 | // Turn off the green LED to tell that we left state F7 | |
648 | adapter->leds &= ~GREEN_LED; | |
649 | st5481_usb_device_ctrl_msg(adapter, GPIO_OUT, adapter->leds, NULL, NULL); | |
650 | } | |
651 | ||
652 | static int st5481_setup_d_out(struct st5481_adapter *adapter) | |
653 | { | |
654 | struct usb_device *dev = adapter->usb_dev; | |
655 | struct usb_interface *intf; | |
656 | struct usb_host_interface *altsetting = NULL; | |
657 | struct usb_host_endpoint *endpoint; | |
658 | struct st5481_d_out *d_out = &adapter->d_out; | |
659 | ||
660 | DBG(2,""); | |
661 | ||
662 | intf = usb_ifnum_to_if(dev, 0); | |
663 | if (intf) | |
664 | altsetting = usb_altnum_to_altsetting(intf, 3); | |
665 | if (!altsetting) | |
666 | return -ENXIO; | |
667 | ||
668 | // Allocate URBs and buffers for the D channel out | |
669 | endpoint = &altsetting->endpoint[EP_D_OUT-1]; | |
670 | ||
671 | DBG(2,"endpoint address=%02x,packet size=%d", | |
672 | endpoint->desc.bEndpointAddress, le16_to_cpu(endpoint->desc.wMaxPacketSize)); | |
673 | ||
674 | return st5481_setup_isocpipes(d_out->urb, dev, | |
675 | usb_sndisocpipe(dev, endpoint->desc.bEndpointAddress), | |
676 | NUM_ISO_PACKETS_D, SIZE_ISO_PACKETS_D_OUT, | |
677 | NUM_ISO_PACKETS_D * SIZE_ISO_PACKETS_D_OUT, | |
678 | usb_d_out_complete, adapter); | |
679 | } | |
680 | ||
681 | static void st5481_release_d_out(struct st5481_adapter *adapter) | |
682 | { | |
683 | struct st5481_d_out *d_out = &adapter->d_out; | |
684 | ||
685 | DBG(2,""); | |
686 | ||
687 | st5481_release_isocpipes(d_out->urb); | |
688 | } | |
689 | ||
690 | int st5481_setup_d(struct st5481_adapter *adapter) | |
691 | { | |
692 | int retval; | |
693 | ||
694 | DBG(2,""); | |
695 | ||
696 | retval = st5481_setup_d_out(adapter); | |
697 | if (retval) | |
698 | goto err; | |
699 | adapter->d_in.bufsize = MAX_DFRAME_LEN_L1; | |
700 | adapter->d_in.num_packets = NUM_ISO_PACKETS_D; | |
701 | adapter->d_in.packet_size = SIZE_ISO_PACKETS_D_IN; | |
702 | adapter->d_in.ep = EP_D_IN | USB_DIR_IN; | |
703 | adapter->d_in.counter = IN_D_COUNTER; | |
704 | adapter->d_in.adapter = adapter; | |
705 | adapter->d_in.hisax_if = &adapter->hisax_d_if.ifc; | |
706 | retval = st5481_setup_in(&adapter->d_in); | |
707 | if (retval) | |
708 | goto err_d_out; | |
709 | ||
710 | adapter->l1m.fsm = &l1fsm; | |
711 | adapter->l1m.state = ST_L1_F3; | |
712 | adapter->l1m.debug = 1; | |
713 | adapter->l1m.userdata = adapter; | |
714 | adapter->l1m.printdebug = l1m_debug; | |
715 | FsmInitTimer(&adapter->l1m, &adapter->timer); | |
716 | ||
717 | adapter->d_out.fsm.fsm = &dout_fsm; | |
718 | adapter->d_out.fsm.state = ST_DOUT_NONE; | |
719 | adapter->d_out.fsm.debug = 1; | |
720 | adapter->d_out.fsm.userdata = adapter; | |
721 | adapter->d_out.fsm.printdebug = dout_debug; | |
722 | ||
723 | return 0; | |
724 | ||
725 | err_d_out: | |
726 | st5481_release_d_out(adapter); | |
727 | err: | |
728 | return retval; | |
729 | } | |
730 | ||
731 | void st5481_release_d(struct st5481_adapter *adapter) | |
732 | { | |
733 | DBG(2,""); | |
734 | ||
735 | st5481_release_in(&adapter->d_in); | |
736 | st5481_release_d_out(adapter); | |
737 | } | |
738 | ||
739 | /* ====================================================================== | |
740 | * init / exit | |
741 | */ | |
742 | ||
743 | int __init st5481_d_init(void) | |
744 | { | |
745 | int retval; | |
746 | ||
747 | l1fsm.state_count = L1_STATE_COUNT; | |
748 | l1fsm.event_count = L1_EVENT_COUNT; | |
749 | l1fsm.strEvent = strL1Event; | |
750 | l1fsm.strState = strL1State; | |
751 | retval = FsmNew(&l1fsm, L1FnList, ARRAY_SIZE(L1FnList)); | |
752 | if (retval) | |
753 | goto err; | |
754 | ||
755 | dout_fsm.state_count = DOUT_STATE_COUNT; | |
756 | dout_fsm.event_count = DOUT_EVENT_COUNT; | |
757 | dout_fsm.strEvent = strDoutEvent; | |
758 | dout_fsm.strState = strDoutState; | |
759 | retval = FsmNew(&dout_fsm, DoutFnList, ARRAY_SIZE(DoutFnList)); | |
760 | if (retval) | |
761 | goto err_l1; | |
762 | ||
763 | return 0; | |
764 | ||
765 | err_l1: | |
766 | FsmFree(&l1fsm); | |
767 | err: | |
768 | return retval; | |
769 | } | |
770 | ||
771 | // can't be __exit | |
772 | void st5481_d_exit(void) | |
773 | { | |
774 | FsmFree(&l1fsm); | |
775 | FsmFree(&dout_fsm); | |
776 | } |