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07dc1f9f HL |
1 | /* |
2 | * USB driver for Gigaset 307x directly or using M105 Data. | |
3 | * | |
4 | * Copyright (c) 2001 by Stefan Eilers <Eilers.Stefan@epost.de> | |
5 | * and Hansjoerg Lipp <hjlipp@web.de>. | |
6 | * | |
7 | * This driver was derived from the USB skeleton driver by | |
8 | * Greg Kroah-Hartman <greg@kroah.com> | |
9 | * | |
10 | * ===================================================================== | |
11 | * This program is free software; you can redistribute it and/or | |
12 | * modify it under the terms of the GNU General Public License as | |
13 | * published by the Free Software Foundation; either version 2 of | |
14 | * the License, or (at your option) any later version. | |
15 | * ===================================================================== | |
16 | * ToDo: ... | |
17 | * ===================================================================== | |
18 | * Version: $Id: usb-gigaset.c,v 1.85.4.18 2006/02/04 18:28:16 hjlipp Exp $ | |
19 | * ===================================================================== | |
20 | */ | |
21 | ||
22 | #include "gigaset.h" | |
23 | ||
24 | #include <linux/errno.h> | |
25 | #include <linux/init.h> | |
26 | #include <linux/slab.h> | |
27 | #include <linux/usb.h> | |
28 | #include <linux/module.h> | |
29 | #include <linux/moduleparam.h> | |
30 | ||
31 | /* Version Information */ | |
32 | #define DRIVER_AUTHOR "Hansjoerg Lipp <hjlipp@web.de>, Stefan Eilers <Eilers.Stefan@epost.de>" | |
33 | #define DRIVER_DESC "USB Driver for Gigaset 307x using M105" | |
34 | ||
35 | /* Module parameters */ | |
36 | ||
37 | static int startmode = SM_ISDN; | |
38 | static int cidmode = 1; | |
39 | ||
40 | module_param(startmode, int, S_IRUGO); | |
41 | module_param(cidmode, int, S_IRUGO); | |
42 | MODULE_PARM_DESC(startmode, "start in isdn4linux mode"); | |
43 | MODULE_PARM_DESC(cidmode, "Call-ID mode"); | |
44 | ||
45 | #define GIGASET_MINORS 1 | |
46 | #define GIGASET_MINOR 8 | |
47 | #define GIGASET_MODULENAME "usb_gigaset" | |
48 | #define GIGASET_DEVFSNAME "gig/usb/" | |
49 | #define GIGASET_DEVNAME "ttyGU" | |
50 | ||
51 | #define IF_WRITEBUF 2000 //FIXME // WAKEUP_CHARS: 256 | |
52 | ||
53 | /* Values for the Gigaset M105 Data */ | |
54 | #define USB_M105_VENDOR_ID 0x0681 | |
55 | #define USB_M105_PRODUCT_ID 0x0009 | |
56 | ||
57 | /* table of devices that work with this driver */ | |
58 | static struct usb_device_id gigaset_table [] = { | |
59 | { USB_DEVICE(USB_M105_VENDOR_ID, USB_M105_PRODUCT_ID) }, | |
60 | { } /* Terminating entry */ | |
61 | }; | |
62 | ||
63 | MODULE_DEVICE_TABLE(usb, gigaset_table); | |
64 | ||
65 | /* Get a minor range for your devices from the usb maintainer */ | |
66 | #define USB_SKEL_MINOR_BASE 200 | |
67 | ||
68 | ||
69 | /* | |
70 | * Control requests (empty fields: 00) | |
71 | * | |
72 | * RT|RQ|VALUE|INDEX|LEN |DATA | |
73 | * In: | |
74 | * C1 08 01 | |
75 | * Get flags (1 byte). Bits: 0=dtr,1=rts,3-7:? | |
76 | * C1 0F ll ll | |
77 | * Get device information/status (llll: 0x200 and 0x40 seen). | |
78 | * Real size: I only saw MIN(llll,0x64). | |
79 | * Contents: seems to be always the same... | |
80 | * offset 0x00: Length of this structure (0x64) (len: 1,2,3 bytes) | |
81 | * offset 0x3c: String (16 bit chars): "MCCI USB Serial V2.0" | |
82 | * rest: ? | |
83 | * Out: | |
84 | * 41 11 | |
85 | * Initialize/reset device ? | |
86 | * 41 00 xx 00 | |
87 | * ? (xx=00 or 01; 01 on start, 00 on close) | |
88 | * 41 07 vv mm | |
89 | * Set/clear flags vv=value, mm=mask (see RQ 08) | |
90 | * 41 12 xx | |
91 | * Used before the following configuration requests are issued | |
92 | * (with xx=0x0f). I've seen other values<0xf, though. | |
93 | * 41 01 xx xx | |
94 | * Set baud rate. xxxx=ceil(0x384000/rate)=trunc(0x383fff/rate)+1. | |
95 | * 41 03 ps bb | |
96 | * Set byte size and parity. p: 0x20=even,0x10=odd,0x00=no parity | |
97 | * [ 0x30: m, 0x40: s ] | |
98 | * [s: 0: 1 stop bit; 1: 1.5; 2: 2] | |
99 | * bb: bits/byte (seen 7 and 8) | |
100 | * 41 13 -- -- -- -- 10 00 ww 00 00 00 xx 00 00 00 yy 00 00 00 zz 00 00 00 | |
101 | * ?? | |
102 | * Initialization: 01, 40, 00, 00 | |
103 | * Open device: 00 40, 00, 00 | |
104 | * yy and zz seem to be equal, either 0x00 or 0x0a | |
105 | * (ww,xx) pairs seen: (00,00), (00,40), (01,40), (09,80), (19,80) | |
106 | * 41 19 -- -- -- -- 06 00 00 00 00 xx 11 13 | |
107 | * Used after every "configuration sequence" (RQ 12, RQs 01/03/13). | |
108 | * xx is usually 0x00 but was 0x7e before starting data transfer | |
109 | * in unimodem mode. So, this might be an array of characters that need | |
110 | * special treatment ("commit all bufferd data"?), 11=^Q, 13=^S. | |
111 | * | |
112 | * Unimodem mode: use "modprobe ppp_async flag_time=0" as the device _needs_ two | |
113 | * flags per packet. | |
114 | */ | |
115 | ||
116 | static int gigaset_probe(struct usb_interface *interface, | |
117 | const struct usb_device_id *id); | |
118 | static void gigaset_disconnect(struct usb_interface *interface); | |
119 | ||
120 | static struct gigaset_driver *driver = NULL; | |
121 | static struct cardstate *cardstate = NULL; | |
122 | ||
123 | /* usb specific object needed to register this driver with the usb subsystem */ | |
124 | static struct usb_driver gigaset_usb_driver = { | |
125 | .name = GIGASET_MODULENAME, | |
126 | .probe = gigaset_probe, | |
127 | .disconnect = gigaset_disconnect, | |
128 | .id_table = gigaset_table, | |
129 | }; | |
130 | ||
131 | struct usb_cardstate { | |
132 | struct usb_device *udev; /* save off the usb device pointer */ | |
133 | struct usb_interface *interface; /* the interface for this device */ | |
134 | atomic_t busy; /* bulk output in progress */ | |
135 | ||
136 | /* Output buffer for commands (M105: and data)*/ | |
137 | unsigned char *bulk_out_buffer; /* the buffer to send data */ | |
138 | int bulk_out_size; /* the size of the send buffer */ | |
139 | __u8 bulk_out_endpointAddr; /* the address of the bulk out endpoint */ | |
140 | struct urb *bulk_out_urb; /* the urb used to transmit data */ | |
141 | ||
142 | /* Input buffer for command responses (M105: and data)*/ | |
143 | int rcvbuf_size; /* the size of the receive buffer */ | |
144 | struct urb *read_urb; /* the urb used to receive data */ | |
145 | __u8 int_in_endpointAddr; /* the address of the bulk in endpoint */ | |
146 | ||
147 | char bchars[6]; /* req. 0x19 */ | |
148 | }; | |
149 | ||
150 | struct usb_bc_state {}; | |
151 | ||
152 | static inline unsigned tiocm_to_gigaset(unsigned state) | |
153 | { | |
154 | return ((state & TIOCM_DTR) ? 1 : 0) | ((state & TIOCM_RTS) ? 2 : 0); | |
155 | } | |
156 | ||
157 | #ifdef CONFIG_GIGASET_UNDOCREQ | |
158 | /* WARNING: EXPERIMENTAL! */ | |
159 | static int gigaset_set_modem_ctrl(struct cardstate *cs, unsigned old_state, | |
160 | unsigned new_state) | |
161 | { | |
162 | unsigned mask, val; | |
163 | int r; | |
164 | ||
165 | mask = tiocm_to_gigaset(old_state ^ new_state); | |
166 | val = tiocm_to_gigaset(new_state); | |
167 | ||
168 | dbg(DEBUG_USBREQ, "set flags 0x%02x with mask 0x%02x", val, mask); | |
169 | r = usb_control_msg(cs->hw.usb->udev, | |
170 | usb_sndctrlpipe(cs->hw.usb->udev, 0), 7, 0x41, | |
171 | (val & 0xff) | ((mask & 0xff) << 8), 0, | |
172 | NULL, 0, 2000 /*timeout??*/); // don't use this in an interrupt/BH | |
173 | if (r < 0) | |
174 | return r; | |
175 | //.. | |
176 | return 0; | |
177 | } | |
178 | ||
179 | static int set_value(struct cardstate *cs, u8 req, u16 val) | |
180 | { | |
181 | int r, r2; | |
182 | ||
183 | dbg(DEBUG_USBREQ, "request %02x (%04x)", (unsigned)req, (unsigned)val); | |
184 | r = usb_control_msg(cs->hw.usb->udev, | |
185 | usb_sndctrlpipe(cs->hw.usb->udev, 0), 0x12, 0x41, | |
186 | 0xf /*?*/, 0, | |
187 | NULL, 0, 2000 /*?*/); /* no idea, what this does */ | |
188 | if (r < 0) { | |
189 | err("error %d on request 0x12", -r); | |
190 | return r; | |
191 | } | |
192 | ||
193 | r = usb_control_msg(cs->hw.usb->udev, | |
194 | usb_sndctrlpipe(cs->hw.usb->udev, 0), req, 0x41, | |
195 | val, 0, | |
196 | NULL, 0, 2000 /*?*/); | |
197 | if (r < 0) | |
198 | err("error %d on request 0x%02x", -r, (unsigned)req); | |
199 | ||
200 | r2 = usb_control_msg(cs->hw.usb->udev, | |
201 | usb_sndctrlpipe(cs->hw.usb->udev, 0), 0x19, 0x41, | |
202 | 0, 0, cs->hw.usb->bchars, 6, 2000 /*?*/); | |
203 | if (r2 < 0) | |
204 | err("error %d on request 0x19", -r2); | |
205 | ||
206 | return r < 0 ? r : (r2 < 0 ? r2 : 0); | |
207 | } | |
208 | ||
209 | /* WARNING: HIGHLY EXPERIMENTAL! */ | |
210 | // don't use this in an interrupt/BH | |
211 | static int gigaset_baud_rate(struct cardstate *cs, unsigned cflag) | |
212 | { | |
213 | u16 val; | |
214 | u32 rate; | |
215 | ||
216 | cflag &= CBAUD; | |
217 | ||
218 | switch (cflag) { | |
219 | //FIXME more values? | |
220 | case B300: rate = 300; break; | |
221 | case B600: rate = 600; break; | |
222 | case B1200: rate = 1200; break; | |
223 | case B2400: rate = 2400; break; | |
224 | case B4800: rate = 4800; break; | |
225 | case B9600: rate = 9600; break; | |
226 | case B19200: rate = 19200; break; | |
227 | case B38400: rate = 38400; break; | |
228 | case B57600: rate = 57600; break; | |
229 | case B115200: rate = 115200; break; | |
230 | default: | |
231 | rate = 9600; | |
232 | err("unsupported baudrate request 0x%x," | |
233 | " using default of B9600", cflag); | |
234 | } | |
235 | ||
236 | val = 0x383fff / rate + 1; | |
237 | ||
238 | return set_value(cs, 1, val); | |
239 | } | |
240 | ||
241 | /* WARNING: HIGHLY EXPERIMENTAL! */ | |
242 | // don't use this in an interrupt/BH | |
243 | static int gigaset_set_line_ctrl(struct cardstate *cs, unsigned cflag) | |
244 | { | |
245 | u16 val = 0; | |
246 | ||
247 | /* set the parity */ | |
248 | if (cflag & PARENB) | |
249 | val |= (cflag & PARODD) ? 0x10 : 0x20; | |
250 | ||
251 | /* set the number of data bits */ | |
252 | switch (cflag & CSIZE) { | |
253 | case CS5: | |
254 | val |= 5 << 8; break; | |
255 | case CS6: | |
256 | val |= 6 << 8; break; | |
257 | case CS7: | |
258 | val |= 7 << 8; break; | |
259 | case CS8: | |
260 | val |= 8 << 8; break; | |
261 | default: | |
262 | err("CSIZE was not CS5-CS8, using default of 8"); | |
263 | val |= 8 << 8; | |
264 | break; | |
265 | } | |
266 | ||
267 | /* set the number of stop bits */ | |
268 | if (cflag & CSTOPB) { | |
269 | if ((cflag & CSIZE) == CS5) | |
270 | val |= 1; /* 1.5 stop bits */ //FIXME is this okay? | |
271 | else | |
272 | val |= 2; /* 2 stop bits */ | |
273 | } | |
274 | ||
275 | return set_value(cs, 3, val); | |
276 | } | |
277 | ||
278 | #else | |
279 | static int gigaset_set_modem_ctrl(struct cardstate *cs, unsigned old_state, | |
280 | unsigned new_state) | |
281 | { | |
282 | return -EINVAL; | |
283 | } | |
284 | ||
285 | static int gigaset_set_line_ctrl(struct cardstate *cs, unsigned cflag) | |
286 | { | |
287 | return -EINVAL; | |
288 | } | |
289 | ||
290 | static int gigaset_baud_rate(struct cardstate *cs, unsigned cflag) | |
291 | { | |
292 | return -EINVAL; | |
293 | } | |
294 | #endif | |
295 | ||
296 | ||
297 | /*================================================================================================================*/ | |
298 | static int gigaset_init_bchannel(struct bc_state *bcs) | |
299 | { | |
300 | /* nothing to do for M10x */ | |
301 | gigaset_bchannel_up(bcs); | |
302 | return 0; | |
303 | } | |
304 | ||
305 | static int gigaset_close_bchannel(struct bc_state *bcs) | |
306 | { | |
307 | /* nothing to do for M10x */ | |
308 | gigaset_bchannel_down(bcs); | |
309 | return 0; | |
310 | } | |
311 | ||
312 | //void send_ack_to_LL(void *data); | |
313 | static int write_modem(struct cardstate *cs); | |
314 | static int send_cb(struct cardstate *cs, struct cmdbuf_t *cb); | |
315 | ||
316 | ||
317 | /* Handling of send queue. If there is already a skb opened, put data to | |
318 | * the transfer buffer by calling "write_modem". Otherwise take a new skb out of the queue. | |
319 | * This function will be called by the ISR via "transmit_chars" (USB: B-Channel Bulk callback handler | |
320 | * via immediate task queue) or by writebuf_from_LL if the LL wants to transmit data. | |
321 | */ | |
322 | static void gigaset_modem_fill(unsigned long data) | |
323 | { | |
324 | struct cardstate *cs = (struct cardstate *) data; | |
325 | struct bc_state *bcs = &cs->bcs[0]; /* only one channel */ | |
326 | struct cmdbuf_t *cb; | |
327 | unsigned long flags; | |
328 | int again; | |
329 | ||
330 | dbg(DEBUG_OUTPUT, "modem_fill"); | |
331 | ||
332 | if (atomic_read(&cs->hw.usb->busy)) { | |
333 | dbg(DEBUG_OUTPUT, "modem_fill: busy"); | |
334 | return; | |
335 | } | |
336 | ||
337 | do { | |
338 | again = 0; | |
339 | if (!bcs->tx_skb) { /* no skb is being sent */ | |
340 | spin_lock_irqsave(&cs->cmdlock, flags); | |
341 | cb = cs->cmdbuf; | |
342 | spin_unlock_irqrestore(&cs->cmdlock, flags); | |
343 | if (cb) { /* commands to send? */ | |
344 | dbg(DEBUG_OUTPUT, "modem_fill: cb"); | |
345 | if (send_cb(cs, cb) < 0) { | |
346 | dbg(DEBUG_OUTPUT, | |
347 | "modem_fill: send_cb failed"); | |
348 | again = 1; /* no callback will be called! */ | |
349 | } | |
350 | } else { /* skbs to send? */ | |
351 | bcs->tx_skb = skb_dequeue(&bcs->squeue); | |
352 | if (bcs->tx_skb) | |
353 | dbg(DEBUG_INTR, | |
354 | "Dequeued skb (Adr: %lx)!", | |
355 | (unsigned long) bcs->tx_skb); | |
356 | } | |
357 | } | |
358 | ||
359 | if (bcs->tx_skb) { | |
360 | dbg(DEBUG_OUTPUT, "modem_fill: tx_skb"); | |
361 | if (write_modem(cs) < 0) { | |
362 | dbg(DEBUG_OUTPUT, | |
363 | "modem_fill: write_modem failed"); | |
364 | // FIXME should we tell the LL? | |
365 | again = 1; /* no callback will be called! */ | |
366 | } | |
367 | } | |
368 | } while (again); | |
369 | } | |
370 | ||
371 | /** | |
372 | * gigaset_read_int_callback | |
373 | * | |
374 | * It is called if the data was received from the device. This is almost similiar to | |
375 | * the interrupt service routine in the serial device. | |
376 | */ | |
377 | static void gigaset_read_int_callback(struct urb *urb, struct pt_regs *regs) | |
378 | { | |
379 | int resubmit = 0; | |
380 | int r; | |
381 | struct cardstate *cs; | |
382 | unsigned numbytes; | |
383 | unsigned char *src; | |
384 | //unsigned long flags; | |
385 | struct inbuf_t *inbuf; | |
386 | ||
387 | IFNULLRET(urb); | |
388 | inbuf = (struct inbuf_t *) urb->context; | |
389 | IFNULLRET(inbuf); | |
390 | //spin_lock_irqsave(&inbuf->lock, flags); | |
391 | cs = inbuf->cs; | |
392 | IFNULLGOTO(cs, exit); | |
393 | IFNULLGOTO(cardstate, exit); | |
394 | ||
395 | if (!atomic_read(&cs->connected)) { | |
396 | err("%s: disconnected", __func__); | |
397 | goto exit; | |
398 | } | |
399 | ||
400 | if (!urb->status) { | |
401 | numbytes = urb->actual_length; | |
402 | ||
403 | if (numbytes) { | |
404 | src = inbuf->rcvbuf; | |
405 | if (unlikely(*src)) | |
406 | warn("%s: There was no leading 0, but 0x%02x!", | |
407 | __func__, (unsigned) *src); | |
408 | ++src; /* skip leading 0x00 */ | |
409 | --numbytes; | |
410 | if (gigaset_fill_inbuf(inbuf, src, numbytes)) { | |
411 | dbg(DEBUG_INTR, "%s-->BH", __func__); | |
412 | gigaset_schedule_event(inbuf->cs); | |
413 | } | |
414 | } else | |
415 | dbg(DEBUG_INTR, "Received zero block length"); | |
416 | resubmit = 1; | |
417 | } else { | |
418 | /* The urb might have been killed. */ | |
419 | dbg(DEBUG_ANY, "%s - nonzero read bulk status received: %d", | |
420 | __func__, urb->status); | |
421 | if (urb->status != -ENOENT) /* not killed */ | |
422 | resubmit = 1; | |
423 | } | |
424 | exit: | |
425 | //spin_unlock_irqrestore(&inbuf->lock, flags); | |
426 | if (resubmit) { | |
427 | r = usb_submit_urb(urb, SLAB_ATOMIC); | |
428 | if (r) | |
429 | err("error %d when resubmitting urb.", -r); | |
430 | } | |
431 | } | |
432 | ||
433 | ||
434 | /* This callback routine is called when data was transmitted to a B-Channel. | |
435 | * Therefore it has to check if there is still data to transmit. This | |
436 | * happens by calling modem_fill via task queue. | |
437 | * | |
438 | */ | |
439 | static void gigaset_write_bulk_callback(struct urb *urb, struct pt_regs *regs) | |
440 | { | |
441 | struct cardstate *cs = (struct cardstate *) urb->context; | |
442 | ||
443 | IFNULLRET(cs); | |
444 | #ifdef CONFIG_GIGASET_DEBUG | |
445 | if (!atomic_read(&cs->connected)) { | |
446 | err("%s:not connected", __func__); | |
447 | return; | |
448 | } | |
449 | #endif | |
450 | if (urb->status) | |
451 | err("bulk transfer failed (status %d)", -urb->status); /* That's all we can do. Communication problems | |
452 | are handeled by timeouts or network protocols */ | |
453 | ||
454 | atomic_set(&cs->hw.usb->busy, 0); | |
455 | tasklet_schedule(&cs->write_tasklet); | |
456 | } | |
457 | ||
458 | static int send_cb(struct cardstate *cs, struct cmdbuf_t *cb) | |
459 | { | |
460 | struct cmdbuf_t *tcb; | |
461 | unsigned long flags; | |
462 | int count; | |
463 | int status = -ENOENT; // FIXME | |
464 | struct usb_cardstate *ucs = cs->hw.usb; | |
465 | ||
466 | do { | |
467 | if (!cb->len) { | |
468 | tcb = cb; | |
469 | ||
470 | spin_lock_irqsave(&cs->cmdlock, flags); | |
471 | cs->cmdbytes -= cs->curlen; | |
472 | dbg(DEBUG_OUTPUT, "send_cb: sent %u bytes, %u left", | |
473 | cs->curlen, cs->cmdbytes); | |
474 | cs->cmdbuf = cb = cb->next; | |
475 | if (cb) { | |
476 | cb->prev = NULL; | |
477 | cs->curlen = cb->len; | |
478 | } else { | |
479 | cs->lastcmdbuf = NULL; | |
480 | cs->curlen = 0; | |
481 | } | |
482 | spin_unlock_irqrestore(&cs->cmdlock, flags); | |
483 | ||
484 | if (tcb->wake_tasklet) | |
485 | tasklet_schedule(tcb->wake_tasklet); | |
486 | kfree(tcb); | |
487 | } | |
488 | if (cb) { | |
489 | count = min(cb->len, ucs->bulk_out_size); | |
490 | usb_fill_bulk_urb(ucs->bulk_out_urb, ucs->udev, | |
491 | usb_sndbulkpipe(ucs->udev, | |
492 | ucs->bulk_out_endpointAddr & 0x0f), | |
493 | cb->buf + cb->offset, count, | |
494 | gigaset_write_bulk_callback, cs); | |
495 | ||
496 | cb->offset += count; | |
497 | cb->len -= count; | |
498 | atomic_set(&ucs->busy, 1); | |
499 | dbg(DEBUG_OUTPUT, "send_cb: send %d bytes", count); | |
500 | ||
501 | status = usb_submit_urb(ucs->bulk_out_urb, SLAB_ATOMIC); | |
502 | if (status) { | |
503 | atomic_set(&ucs->busy, 0); | |
504 | err("could not submit urb (error %d).", | |
505 | -status); | |
506 | cb->len = 0; /* skip urb => remove cb+wakeup in next loop cycle */ | |
507 | } | |
508 | } | |
509 | } while (cb && status); /* bei Fehler naechster Befehl //FIXME: ist das OK? */ | |
510 | ||
511 | return status; | |
512 | } | |
513 | ||
514 | /* Write string into transbuf and send it to modem. | |
515 | */ | |
516 | static int gigaset_write_cmd(struct cardstate *cs, const unsigned char *buf, | |
517 | int len, struct tasklet_struct *wake_tasklet) | |
518 | { | |
519 | struct cmdbuf_t *cb; | |
520 | unsigned long flags; | |
521 | ||
522 | gigaset_dbg_buffer(atomic_read(&cs->mstate) != MS_LOCKED ? | |
523 | DEBUG_TRANSCMD : DEBUG_LOCKCMD, | |
524 | "CMD Transmit", len, buf, 0); | |
525 | ||
526 | if (!atomic_read(&cs->connected)) { | |
527 | err("%s: not connected", __func__); | |
528 | return -ENODEV; | |
529 | } | |
530 | ||
531 | if (len <= 0) | |
532 | return 0; | |
533 | ||
534 | if (!(cb = kmalloc(sizeof(struct cmdbuf_t) + len, GFP_ATOMIC))) { | |
535 | err("%s: out of memory", __func__); | |
536 | return -ENOMEM; | |
537 | } | |
538 | ||
539 | memcpy(cb->buf, buf, len); | |
540 | cb->len = len; | |
541 | cb->offset = 0; | |
542 | cb->next = NULL; | |
543 | cb->wake_tasklet = wake_tasklet; | |
544 | ||
545 | spin_lock_irqsave(&cs->cmdlock, flags); | |
546 | cb->prev = cs->lastcmdbuf; | |
547 | if (cs->lastcmdbuf) | |
548 | cs->lastcmdbuf->next = cb; | |
549 | else { | |
550 | cs->cmdbuf = cb; | |
551 | cs->curlen = len; | |
552 | } | |
553 | cs->cmdbytes += len; | |
554 | cs->lastcmdbuf = cb; | |
555 | spin_unlock_irqrestore(&cs->cmdlock, flags); | |
556 | ||
557 | tasklet_schedule(&cs->write_tasklet); | |
558 | return len; | |
559 | } | |
560 | ||
561 | static int gigaset_write_room(struct cardstate *cs) | |
562 | { | |
563 | unsigned long flags; | |
564 | unsigned bytes; | |
565 | ||
566 | spin_lock_irqsave(&cs->cmdlock, flags); | |
567 | bytes = cs->cmdbytes; | |
568 | spin_unlock_irqrestore(&cs->cmdlock, flags); | |
569 | ||
570 | return bytes < IF_WRITEBUF ? IF_WRITEBUF - bytes : 0; | |
571 | } | |
572 | ||
573 | static int gigaset_chars_in_buffer(struct cardstate *cs) | |
574 | { | |
575 | return cs->cmdbytes; | |
576 | } | |
577 | ||
578 | static int gigaset_brkchars(struct cardstate *cs, const unsigned char buf[6]) | |
579 | { | |
580 | #ifdef CONFIG_GIGASET_UNDOCREQ | |
581 | gigaset_dbg_buffer(DEBUG_USBREQ, "brkchars", 6, buf, 0); | |
582 | memcpy(cs->hw.usb->bchars, buf, 6); | |
583 | return usb_control_msg(cs->hw.usb->udev, | |
584 | usb_sndctrlpipe(cs->hw.usb->udev, 0), 0x19, 0x41, | |
585 | 0, 0, &buf, 6, 2000); | |
586 | #else | |
587 | return -EINVAL; | |
588 | #endif | |
589 | } | |
590 | ||
591 | static int gigaset_freebcshw(struct bc_state *bcs) | |
592 | { | |
593 | if (!bcs->hw.usb) | |
594 | return 0; | |
595 | //FIXME | |
596 | kfree(bcs->hw.usb); | |
597 | return 1; | |
598 | } | |
599 | ||
600 | /* Initialize the b-channel structure */ | |
601 | static int gigaset_initbcshw(struct bc_state *bcs) | |
602 | { | |
603 | bcs->hw.usb = kmalloc(sizeof(struct usb_bc_state), GFP_KERNEL); | |
604 | if (!bcs->hw.usb) | |
605 | return 0; | |
606 | ||
607 | //bcs->hw.usb->trans_flg = READY_TO_TRNSMIT; /* B-Channel ready to transmit */ | |
608 | return 1; | |
609 | } | |
610 | ||
611 | static void gigaset_reinitbcshw(struct bc_state *bcs) | |
612 | { | |
613 | } | |
614 | ||
615 | static void gigaset_freecshw(struct cardstate *cs) | |
616 | { | |
617 | //FIXME | |
618 | tasklet_kill(&cs->write_tasklet); | |
619 | kfree(cs->hw.usb); | |
620 | } | |
621 | ||
622 | static int gigaset_initcshw(struct cardstate *cs) | |
623 | { | |
624 | struct usb_cardstate *ucs; | |
625 | ||
626 | cs->hw.usb = ucs = | |
627 | kmalloc(sizeof(struct usb_cardstate), GFP_KERNEL); | |
628 | if (!ucs) | |
629 | return 0; | |
630 | ||
631 | ucs->bchars[0] = 0; | |
632 | ucs->bchars[1] = 0; | |
633 | ucs->bchars[2] = 0; | |
634 | ucs->bchars[3] = 0; | |
635 | ucs->bchars[4] = 0x11; | |
636 | ucs->bchars[5] = 0x13; | |
637 | ucs->bulk_out_buffer = NULL; | |
638 | ucs->bulk_out_urb = NULL; | |
639 | //ucs->urb_cmd_out = NULL; | |
640 | ucs->read_urb = NULL; | |
641 | tasklet_init(&cs->write_tasklet, | |
642 | &gigaset_modem_fill, (unsigned long) cs); | |
643 | ||
644 | return 1; | |
645 | } | |
646 | ||
647 | /* Writes the data of the current open skb into the modem. | |
648 | * We have to protect against multiple calls until the | |
649 | * callback handler () is called , due to the fact that we | |
650 | * are just allowed to send data once to an endpoint. Therefore | |
651 | * we using "trans_flg" to synchonize ... | |
652 | */ | |
653 | static int write_modem(struct cardstate *cs) | |
654 | { | |
655 | int ret; | |
656 | int count; | |
657 | struct bc_state *bcs = &cs->bcs[0]; /* only one channel */ | |
658 | struct usb_cardstate *ucs = cs->hw.usb; | |
659 | //unsigned long flags; | |
660 | ||
661 | IFNULLRETVAL(bcs->tx_skb, -EINVAL); | |
662 | ||
663 | dbg(DEBUG_WRITE, "len: %d...", bcs->tx_skb->len); | |
664 | ||
665 | ret = -ENODEV; | |
666 | IFNULLGOTO(ucs->bulk_out_buffer, error); | |
667 | IFNULLGOTO(ucs->bulk_out_urb, error); | |
668 | ret = 0; | |
669 | ||
670 | if (!bcs->tx_skb->len) { | |
671 | dev_kfree_skb_any(bcs->tx_skb); | |
672 | bcs->tx_skb = NULL; | |
673 | return -EINVAL; | |
674 | } | |
675 | ||
676 | /* Copy data to bulk out buffer and // FIXME copying not necessary | |
677 | * transmit data | |
678 | */ | |
679 | count = min(bcs->tx_skb->len, (unsigned) ucs->bulk_out_size); | |
680 | memcpy(ucs->bulk_out_buffer, bcs->tx_skb->data, count); | |
681 | skb_pull(bcs->tx_skb, count); | |
682 | ||
683 | usb_fill_bulk_urb(ucs->bulk_out_urb, ucs->udev, | |
684 | usb_sndbulkpipe(ucs->udev, | |
685 | ucs->bulk_out_endpointAddr & 0x0f), | |
686 | ucs->bulk_out_buffer, count, | |
687 | gigaset_write_bulk_callback, cs); | |
688 | atomic_set(&ucs->busy, 1); | |
689 | dbg(DEBUG_OUTPUT, "write_modem: send %d bytes", count); | |
690 | ||
691 | ret = usb_submit_urb(ucs->bulk_out_urb, SLAB_ATOMIC); | |
692 | if (ret) { | |
693 | err("could not submit urb (error %d).", -ret); | |
694 | atomic_set(&ucs->busy, 0); | |
695 | } | |
696 | if (!bcs->tx_skb->len) { | |
697 | /* skb sent completely */ | |
698 | gigaset_skb_sent(bcs, bcs->tx_skb); //FIXME also, when ret<0? | |
699 | ||
700 | dbg(DEBUG_INTR, | |
701 | "kfree skb (Adr: %lx)!", (unsigned long) bcs->tx_skb); | |
702 | dev_kfree_skb_any(bcs->tx_skb); | |
703 | bcs->tx_skb = NULL; | |
704 | } | |
705 | ||
706 | return ret; | |
707 | error: | |
708 | dev_kfree_skb_any(bcs->tx_skb); | |
709 | bcs->tx_skb = NULL; | |
710 | return ret; | |
711 | ||
712 | } | |
713 | ||
714 | static int gigaset_probe(struct usb_interface *interface, | |
715 | const struct usb_device_id *id) | |
716 | { | |
717 | int retval; | |
718 | struct usb_device *udev = interface_to_usbdev(interface); | |
719 | unsigned int ifnum; | |
720 | struct usb_host_interface *hostif; | |
721 | struct cardstate *cs = NULL; | |
722 | struct usb_cardstate *ucs = NULL; | |
723 | //struct usb_interface_descriptor *iface_desc; | |
724 | struct usb_endpoint_descriptor *endpoint; | |
725 | //isdn_ctrl command; | |
726 | int buffer_size; | |
727 | int alt; | |
728 | //unsigned long flags; | |
729 | ||
730 | info("%s: Check if device matches .. (Vendor: 0x%x, Product: 0x%x)", | |
731 | __func__, le16_to_cpu(udev->descriptor.idVendor), | |
732 | le16_to_cpu(udev->descriptor.idProduct)); | |
733 | ||
734 | retval = -ENODEV; //FIXME | |
735 | ||
736 | /* See if the device offered us matches what we can accept */ | |
737 | if ((le16_to_cpu(udev->descriptor.idVendor != USB_M105_VENDOR_ID)) || | |
738 | (le16_to_cpu(udev->descriptor.idProduct != USB_M105_PRODUCT_ID))) | |
739 | return -ENODEV; | |
740 | ||
741 | /* this starts to become ascii art... */ | |
742 | hostif = interface->cur_altsetting; | |
743 | alt = hostif->desc.bAlternateSetting; | |
744 | ifnum = hostif->desc.bInterfaceNumber; // FIXME ? | |
745 | ||
746 | if (alt != 0 || ifnum != 0) { | |
747 | warn("ifnum %d, alt %d", ifnum, alt); | |
748 | return -ENODEV; | |
749 | } | |
750 | ||
751 | /* Reject application specific intefaces | |
752 | * | |
753 | */ | |
754 | if (hostif->desc.bInterfaceClass != 255) { | |
755 | info("%s: Device matched, but iface_desc[%d]->bInterfaceClass==%d !", | |
756 | __func__, ifnum, hostif->desc.bInterfaceClass); | |
757 | return -ENODEV; | |
758 | } | |
759 | ||
760 | info("%s: Device matched ... !", __func__); | |
761 | ||
762 | cs = gigaset_getunassignedcs(driver); | |
763 | if (!cs) { | |
764 | warn("No free cardstate!"); | |
765 | return -ENODEV; | |
766 | } | |
767 | ucs = cs->hw.usb; | |
768 | ||
769 | #if 0 | |
770 | if (usb_set_configuration(udev, udev->config[0].desc.bConfigurationValue) < 0) { | |
771 | warn("set_configuration failed"); | |
772 | goto error; | |
773 | } | |
774 | ||
775 | ||
776 | if (usb_set_interface(udev, ifnum/*==0*/, alt/*==0*/) < 0) { | |
777 | warn("usb_set_interface failed, device %d interface %d altsetting %d", | |
778 | udev->devnum, ifnum, alt); | |
779 | goto error; | |
780 | } | |
781 | #endif | |
782 | ||
783 | /* set up the endpoint information */ | |
784 | /* check out the endpoints */ | |
785 | /* We will get 2 endpoints: One for sending commands to the device (bulk out) and one to | |
786 | * poll messages from the device(int in). | |
787 | * Therefore we will have an almost similiar situation as with our serial port handler. | |
788 | * If an connection will be established, we will have to create data in/out pipes | |
789 | * dynamically... | |
790 | */ | |
791 | ||
792 | endpoint = &hostif->endpoint[0].desc; | |
793 | ||
794 | buffer_size = le16_to_cpu(endpoint->wMaxPacketSize); | |
795 | ucs->bulk_out_size = buffer_size; | |
796 | ucs->bulk_out_endpointAddr = endpoint->bEndpointAddress; | |
797 | ucs->bulk_out_buffer = kmalloc(buffer_size, GFP_KERNEL); | |
798 | if (!ucs->bulk_out_buffer) { | |
799 | err("Couldn't allocate bulk_out_buffer"); | |
800 | retval = -ENOMEM; | |
801 | goto error; | |
802 | } | |
803 | ||
804 | ucs->bulk_out_urb = usb_alloc_urb(0, SLAB_KERNEL); | |
805 | if (!ucs->bulk_out_urb) { | |
806 | err("Couldn't allocate bulk_out_buffer"); | |
807 | retval = -ENOMEM; | |
808 | goto error; | |
809 | } | |
810 | ||
811 | endpoint = &hostif->endpoint[1].desc; | |
812 | ||
813 | atomic_set(&ucs->busy, 0); | |
814 | ucs->udev = udev; | |
815 | ucs->interface = interface; | |
816 | ||
817 | ucs->read_urb = usb_alloc_urb(0, SLAB_KERNEL); | |
818 | if (!ucs->read_urb) { | |
819 | err("No free urbs available"); | |
820 | retval = -ENOMEM; | |
821 | goto error; | |
822 | } | |
823 | buffer_size = le16_to_cpu(endpoint->wMaxPacketSize); | |
824 | ucs->rcvbuf_size = buffer_size; | |
825 | ucs->int_in_endpointAddr = endpoint->bEndpointAddress; | |
826 | cs->inbuf[0].rcvbuf = kmalloc(buffer_size, GFP_KERNEL); | |
827 | if (!cs->inbuf[0].rcvbuf) { | |
828 | err("Couldn't allocate rcvbuf"); | |
829 | retval = -ENOMEM; | |
830 | goto error; | |
831 | } | |
832 | /* Fill the interrupt urb and send it to the core */ | |
833 | usb_fill_int_urb(ucs->read_urb, udev, | |
834 | usb_rcvintpipe(udev, | |
835 | endpoint->bEndpointAddress & 0x0f), | |
836 | cs->inbuf[0].rcvbuf, buffer_size, | |
837 | gigaset_read_int_callback, | |
838 | cs->inbuf + 0, endpoint->bInterval); | |
839 | ||
840 | retval = usb_submit_urb(ucs->read_urb, SLAB_KERNEL); | |
841 | if (retval) { | |
842 | err("Could not submit URB!"); | |
843 | goto error; | |
844 | } | |
845 | ||
846 | /* tell common part that the device is ready */ | |
847 | if (startmode == SM_LOCKED) | |
848 | atomic_set(&cs->mstate, MS_LOCKED); | |
849 | if (!gigaset_start(cs)) { | |
850 | tasklet_kill(&cs->write_tasklet); | |
851 | retval = -ENODEV; //FIXME | |
852 | goto error; | |
853 | } | |
854 | ||
855 | /* save address of controller structure */ | |
856 | usb_set_intfdata(interface, cs); | |
857 | ||
858 | /* set up device sysfs */ | |
859 | gigaset_init_dev_sysfs(interface); | |
860 | return 0; | |
861 | ||
862 | error: | |
863 | if (ucs->read_urb) | |
864 | usb_kill_urb(ucs->read_urb); | |
865 | kfree(ucs->bulk_out_buffer); | |
866 | if (ucs->bulk_out_urb != NULL) | |
867 | usb_free_urb(ucs->bulk_out_urb); | |
868 | kfree(cs->inbuf[0].rcvbuf); | |
869 | if (ucs->read_urb != NULL) | |
870 | usb_free_urb(ucs->read_urb); | |
871 | ucs->read_urb = ucs->bulk_out_urb = NULL; | |
872 | cs->inbuf[0].rcvbuf = ucs->bulk_out_buffer = NULL; | |
873 | gigaset_unassign(cs); | |
874 | return retval; | |
875 | } | |
876 | ||
877 | /** | |
878 | * skel_disconnect | |
879 | */ | |
880 | static void gigaset_disconnect(struct usb_interface *interface) | |
881 | { | |
882 | struct cardstate *cs; | |
883 | struct usb_cardstate *ucs; | |
884 | ||
885 | cs = usb_get_intfdata(interface); | |
886 | ||
887 | /* clear device sysfs */ | |
888 | gigaset_free_dev_sysfs(interface); | |
889 | ||
890 | usb_set_intfdata(interface, NULL); | |
891 | ucs = cs->hw.usb; | |
892 | usb_kill_urb(ucs->read_urb); | |
893 | //info("GigaSet USB device #%d will be disconnected", minor); | |
894 | ||
895 | gigaset_stop(cs); | |
896 | ||
897 | tasklet_kill(&cs->write_tasklet); | |
898 | ||
899 | usb_kill_urb(ucs->bulk_out_urb); /* FIXME: nur, wenn noetig */ | |
900 | //usb_kill_urb(ucs->urb_cmd_out); /* FIXME: nur, wenn noetig */ | |
901 | ||
902 | kfree(ucs->bulk_out_buffer); | |
903 | if (ucs->bulk_out_urb != NULL) | |
904 | usb_free_urb(ucs->bulk_out_urb); | |
905 | //if(ucs->urb_cmd_out != NULL) | |
906 | // usb_free_urb(ucs->urb_cmd_out); | |
907 | kfree(cs->inbuf[0].rcvbuf); | |
908 | if (ucs->read_urb != NULL) | |
909 | usb_free_urb(ucs->read_urb); | |
910 | ucs->read_urb = ucs->bulk_out_urb/*=ucs->urb_cmd_out*/=NULL; | |
911 | cs->inbuf[0].rcvbuf = ucs->bulk_out_buffer = NULL; | |
912 | ||
913 | gigaset_unassign(cs); | |
914 | } | |
915 | ||
916 | static struct gigaset_ops ops = { | |
917 | gigaset_write_cmd, | |
918 | gigaset_write_room, | |
919 | gigaset_chars_in_buffer, | |
920 | gigaset_brkchars, | |
921 | gigaset_init_bchannel, | |
922 | gigaset_close_bchannel, | |
923 | gigaset_initbcshw, | |
924 | gigaset_freebcshw, | |
925 | gigaset_reinitbcshw, | |
926 | gigaset_initcshw, | |
927 | gigaset_freecshw, | |
928 | gigaset_set_modem_ctrl, | |
929 | gigaset_baud_rate, | |
930 | gigaset_set_line_ctrl, | |
931 | gigaset_m10x_send_skb, | |
932 | gigaset_m10x_input, | |
933 | }; | |
934 | ||
935 | /** | |
936 | * usb_gigaset_init | |
937 | * This function is called while kernel-module is loaded | |
938 | */ | |
939 | static int __init usb_gigaset_init(void) | |
940 | { | |
941 | int result; | |
942 | ||
943 | /* allocate memory for our driver state and intialize it */ | |
944 | if ((driver = gigaset_initdriver(GIGASET_MINOR, GIGASET_MINORS, | |
945 | GIGASET_MODULENAME, GIGASET_DEVNAME, | |
946 | GIGASET_DEVFSNAME, &ops, | |
947 | THIS_MODULE)) == NULL) | |
948 | goto error; | |
949 | ||
950 | /* allocate memory for our device state and intialize it */ | |
951 | cardstate = gigaset_initcs(driver, 1, 1, 0, cidmode, GIGASET_MODULENAME); | |
952 | if (!cardstate) | |
953 | goto error; | |
954 | ||
955 | /* register this driver with the USB subsystem */ | |
956 | result = usb_register(&gigaset_usb_driver); | |
957 | if (result < 0) { | |
958 | err("usb_gigaset: usb_register failed (error %d)", | |
959 | -result); | |
960 | goto error; | |
961 | } | |
962 | ||
963 | info(DRIVER_AUTHOR); | |
964 | info(DRIVER_DESC); | |
965 | return 0; | |
966 | ||
967 | error: if (cardstate) | |
968 | gigaset_freecs(cardstate); | |
969 | cardstate = NULL; | |
970 | if (driver) | |
971 | gigaset_freedriver(driver); | |
972 | driver = NULL; | |
973 | return -1; | |
974 | } | |
975 | ||
976 | ||
977 | /** | |
978 | * usb_gigaset_exit | |
979 | * This function is called while unloading the kernel-module | |
980 | */ | |
981 | static void __exit usb_gigaset_exit(void) | |
982 | { | |
983 | gigaset_blockdriver(driver); /* => probe will fail | |
984 | * => no gigaset_start any more | |
985 | */ | |
986 | ||
987 | gigaset_shutdown(cardstate); | |
988 | /* from now on, no isdn callback should be possible */ | |
989 | ||
990 | /* deregister this driver with the USB subsystem */ | |
991 | usb_deregister(&gigaset_usb_driver); | |
992 | /* this will call the disconnect-callback */ | |
993 | /* from now on, no disconnect/probe callback should be running */ | |
994 | ||
995 | gigaset_freecs(cardstate); | |
996 | cardstate = NULL; | |
997 | gigaset_freedriver(driver); | |
998 | driver = NULL; | |
999 | } | |
1000 | ||
1001 | ||
1002 | module_init(usb_gigaset_init); | |
1003 | module_exit(usb_gigaset_exit); | |
1004 | ||
1005 | MODULE_AUTHOR(DRIVER_AUTHOR); | |
1006 | MODULE_DESCRIPTION(DRIVER_DESC); | |
1007 | ||
1008 | MODULE_LICENSE("GPL"); |