Commit | Line | Data |
---|---|---|
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 | * ===================================================================== | |
07dc1f9f HL |
16 | */ |
17 | ||
18 | #include "gigaset.h" | |
19 | ||
20 | #include <linux/errno.h> | |
21 | #include <linux/init.h> | |
22 | #include <linux/slab.h> | |
23 | #include <linux/usb.h> | |
24 | #include <linux/module.h> | |
25 | #include <linux/moduleparam.h> | |
26 | ||
27 | /* Version Information */ | |
28 | #define DRIVER_AUTHOR "Hansjoerg Lipp <hjlipp@web.de>, Stefan Eilers <Eilers.Stefan@epost.de>" | |
29 | #define DRIVER_DESC "USB Driver for Gigaset 307x using M105" | |
30 | ||
31 | /* Module parameters */ | |
32 | ||
33 | static int startmode = SM_ISDN; | |
34 | static int cidmode = 1; | |
35 | ||
36 | module_param(startmode, int, S_IRUGO); | |
37 | module_param(cidmode, int, S_IRUGO); | |
38 | MODULE_PARM_DESC(startmode, "start in isdn4linux mode"); | |
39 | MODULE_PARM_DESC(cidmode, "Call-ID mode"); | |
40 | ||
41 | #define GIGASET_MINORS 1 | |
42 | #define GIGASET_MINOR 8 | |
43 | #define GIGASET_MODULENAME "usb_gigaset" | |
44 | #define GIGASET_DEVFSNAME "gig/usb/" | |
45 | #define GIGASET_DEVNAME "ttyGU" | |
46 | ||
47 | #define IF_WRITEBUF 2000 //FIXME // WAKEUP_CHARS: 256 | |
48 | ||
49 | /* Values for the Gigaset M105 Data */ | |
50 | #define USB_M105_VENDOR_ID 0x0681 | |
51 | #define USB_M105_PRODUCT_ID 0x0009 | |
52 | ||
53 | /* table of devices that work with this driver */ | |
54 | static struct usb_device_id gigaset_table [] = { | |
55 | { USB_DEVICE(USB_M105_VENDOR_ID, USB_M105_PRODUCT_ID) }, | |
56 | { } /* Terminating entry */ | |
57 | }; | |
58 | ||
59 | MODULE_DEVICE_TABLE(usb, gigaset_table); | |
60 | ||
07dc1f9f HL |
61 | /* |
62 | * Control requests (empty fields: 00) | |
63 | * | |
64 | * RT|RQ|VALUE|INDEX|LEN |DATA | |
65 | * In: | |
66 | * C1 08 01 | |
67 | * Get flags (1 byte). Bits: 0=dtr,1=rts,3-7:? | |
68 | * C1 0F ll ll | |
69 | * Get device information/status (llll: 0x200 and 0x40 seen). | |
70 | * Real size: I only saw MIN(llll,0x64). | |
71 | * Contents: seems to be always the same... | |
72 | * offset 0x00: Length of this structure (0x64) (len: 1,2,3 bytes) | |
73 | * offset 0x3c: String (16 bit chars): "MCCI USB Serial V2.0" | |
74 | * rest: ? | |
75 | * Out: | |
76 | * 41 11 | |
77 | * Initialize/reset device ? | |
78 | * 41 00 xx 00 | |
79 | * ? (xx=00 or 01; 01 on start, 00 on close) | |
80 | * 41 07 vv mm | |
81 | * Set/clear flags vv=value, mm=mask (see RQ 08) | |
82 | * 41 12 xx | |
83 | * Used before the following configuration requests are issued | |
84 | * (with xx=0x0f). I've seen other values<0xf, though. | |
85 | * 41 01 xx xx | |
86 | * Set baud rate. xxxx=ceil(0x384000/rate)=trunc(0x383fff/rate)+1. | |
87 | * 41 03 ps bb | |
88 | * Set byte size and parity. p: 0x20=even,0x10=odd,0x00=no parity | |
89 | * [ 0x30: m, 0x40: s ] | |
90 | * [s: 0: 1 stop bit; 1: 1.5; 2: 2] | |
91 | * bb: bits/byte (seen 7 and 8) | |
92 | * 41 13 -- -- -- -- 10 00 ww 00 00 00 xx 00 00 00 yy 00 00 00 zz 00 00 00 | |
93 | * ?? | |
94 | * Initialization: 01, 40, 00, 00 | |
95 | * Open device: 00 40, 00, 00 | |
96 | * yy and zz seem to be equal, either 0x00 or 0x0a | |
97 | * (ww,xx) pairs seen: (00,00), (00,40), (01,40), (09,80), (19,80) | |
98 | * 41 19 -- -- -- -- 06 00 00 00 00 xx 11 13 | |
99 | * Used after every "configuration sequence" (RQ 12, RQs 01/03/13). | |
100 | * xx is usually 0x00 but was 0x7e before starting data transfer | |
101 | * in unimodem mode. So, this might be an array of characters that need | |
102 | * special treatment ("commit all bufferd data"?), 11=^Q, 13=^S. | |
103 | * | |
104 | * Unimodem mode: use "modprobe ppp_async flag_time=0" as the device _needs_ two | |
105 | * flags per packet. | |
106 | */ | |
107 | ||
108 | static int gigaset_probe(struct usb_interface *interface, | |
784d5858 | 109 | const struct usb_device_id *id); |
07dc1f9f HL |
110 | static void gigaset_disconnect(struct usb_interface *interface); |
111 | ||
112 | static struct gigaset_driver *driver = NULL; | |
113 | static struct cardstate *cardstate = NULL; | |
114 | ||
115 | /* usb specific object needed to register this driver with the usb subsystem */ | |
116 | static struct usb_driver gigaset_usb_driver = { | |
917f5085 TS |
117 | .name = GIGASET_MODULENAME, |
118 | .probe = gigaset_probe, | |
119 | .disconnect = gigaset_disconnect, | |
120 | .id_table = gigaset_table, | |
07dc1f9f HL |
121 | }; |
122 | ||
123 | struct usb_cardstate { | |
917f5085 TS |
124 | struct usb_device *udev; /* usb device pointer */ |
125 | struct usb_interface *interface; /* interface for this device */ | |
126 | atomic_t busy; /* bulk output in progress */ | |
127 | ||
128 | /* Output buffer */ | |
784d5858 TS |
129 | unsigned char *bulk_out_buffer; |
130 | int bulk_out_size; | |
131 | __u8 bulk_out_endpointAddr; | |
132 | struct urb *bulk_out_urb; | |
917f5085 TS |
133 | |
134 | /* Input buffer */ | |
784d5858 TS |
135 | int rcvbuf_size; |
136 | struct urb *read_urb; | |
137 | __u8 int_in_endpointAddr; | |
917f5085 | 138 | |
784d5858 | 139 | char bchars[6]; /* for request 0x19 */ |
07dc1f9f HL |
140 | }; |
141 | ||
142 | struct usb_bc_state {}; | |
143 | ||
144 | static inline unsigned tiocm_to_gigaset(unsigned state) | |
145 | { | |
146 | return ((state & TIOCM_DTR) ? 1 : 0) | ((state & TIOCM_RTS) ? 2 : 0); | |
147 | } | |
148 | ||
149 | #ifdef CONFIG_GIGASET_UNDOCREQ | |
150 | /* WARNING: EXPERIMENTAL! */ | |
151 | static int gigaset_set_modem_ctrl(struct cardstate *cs, unsigned old_state, | |
784d5858 | 152 | unsigned new_state) |
07dc1f9f | 153 | { |
784d5858 | 154 | struct usb_device *udev = cs->hw.usb->udev; |
07dc1f9f HL |
155 | unsigned mask, val; |
156 | int r; | |
157 | ||
158 | mask = tiocm_to_gigaset(old_state ^ new_state); | |
159 | val = tiocm_to_gigaset(new_state); | |
160 | ||
784d5858 | 161 | gig_dbg(DEBUG_USBREQ, "set flags 0x%02x with mask 0x%02x", val, mask); |
917f5085 | 162 | // don't use this in an interrupt/BH |
784d5858 TS |
163 | r = usb_control_msg(udev, usb_sndctrlpipe(udev, 0), 7, 0x41, |
164 | (val & 0xff) | ((mask & 0xff) << 8), 0, | |
165 | NULL, 0, 2000 /* timeout? */); | |
07dc1f9f HL |
166 | if (r < 0) |
167 | return r; | |
168 | //.. | |
169 | return 0; | |
170 | } | |
171 | ||
172 | static int set_value(struct cardstate *cs, u8 req, u16 val) | |
173 | { | |
784d5858 | 174 | struct usb_device *udev = cs->hw.usb->udev; |
07dc1f9f HL |
175 | int r, r2; |
176 | ||
784d5858 TS |
177 | gig_dbg(DEBUG_USBREQ, "request %02x (%04x)", |
178 | (unsigned)req, (unsigned)val); | |
179 | r = usb_control_msg(udev, usb_sndctrlpipe(udev, 0), 0x12, 0x41, | |
180 | 0xf /*?*/, 0, NULL, 0, 2000 /*?*/); | |
181 | /* no idea what this does */ | |
07dc1f9f | 182 | if (r < 0) { |
784d5858 | 183 | dev_err(&udev->dev, "error %d on request 0x12\n", -r); |
07dc1f9f HL |
184 | return r; |
185 | } | |
186 | ||
784d5858 TS |
187 | r = usb_control_msg(udev, usb_sndctrlpipe(udev, 0), req, 0x41, |
188 | val, 0, NULL, 0, 2000 /*?*/); | |
07dc1f9f | 189 | if (r < 0) |
784d5858 TS |
190 | dev_err(&udev->dev, "error %d on request 0x%02x\n", |
191 | -r, (unsigned)req); | |
07dc1f9f | 192 | |
784d5858 TS |
193 | r2 = usb_control_msg(udev, usb_sndctrlpipe(udev, 0), 0x19, 0x41, |
194 | 0, 0, cs->hw.usb->bchars, 6, 2000 /*?*/); | |
07dc1f9f | 195 | if (r2 < 0) |
784d5858 | 196 | dev_err(&udev->dev, "error %d on request 0x19\n", -r2); |
07dc1f9f HL |
197 | |
198 | return r < 0 ? r : (r2 < 0 ? r2 : 0); | |
199 | } | |
200 | ||
201 | /* WARNING: HIGHLY EXPERIMENTAL! */ | |
202 | // don't use this in an interrupt/BH | |
203 | static int gigaset_baud_rate(struct cardstate *cs, unsigned cflag) | |
204 | { | |
205 | u16 val; | |
206 | u32 rate; | |
207 | ||
208 | cflag &= CBAUD; | |
209 | ||
210 | switch (cflag) { | |
211 | //FIXME more values? | |
212 | case B300: rate = 300; break; | |
213 | case B600: rate = 600; break; | |
214 | case B1200: rate = 1200; break; | |
215 | case B2400: rate = 2400; break; | |
216 | case B4800: rate = 4800; break; | |
217 | case B9600: rate = 9600; break; | |
218 | case B19200: rate = 19200; break; | |
219 | case B38400: rate = 38400; break; | |
220 | case B57600: rate = 57600; break; | |
221 | case B115200: rate = 115200; break; | |
222 | default: | |
223 | rate = 9600; | |
784d5858 TS |
224 | dev_err(cs->dev, "unsupported baudrate request 0x%x," |
225 | " using default of B9600\n", cflag); | |
07dc1f9f HL |
226 | } |
227 | ||
228 | val = 0x383fff / rate + 1; | |
229 | ||
230 | return set_value(cs, 1, val); | |
231 | } | |
232 | ||
233 | /* WARNING: HIGHLY EXPERIMENTAL! */ | |
234 | // don't use this in an interrupt/BH | |
235 | static int gigaset_set_line_ctrl(struct cardstate *cs, unsigned cflag) | |
236 | { | |
237 | u16 val = 0; | |
238 | ||
239 | /* set the parity */ | |
240 | if (cflag & PARENB) | |
241 | val |= (cflag & PARODD) ? 0x10 : 0x20; | |
242 | ||
243 | /* set the number of data bits */ | |
244 | switch (cflag & CSIZE) { | |
245 | case CS5: | |
246 | val |= 5 << 8; break; | |
247 | case CS6: | |
248 | val |= 6 << 8; break; | |
249 | case CS7: | |
250 | val |= 7 << 8; break; | |
251 | case CS8: | |
252 | val |= 8 << 8; break; | |
253 | default: | |
784d5858 | 254 | dev_err(cs->dev, "CSIZE was not CS5-CS8, using default of 8\n"); |
07dc1f9f HL |
255 | val |= 8 << 8; |
256 | break; | |
257 | } | |
258 | ||
259 | /* set the number of stop bits */ | |
260 | if (cflag & CSTOPB) { | |
261 | if ((cflag & CSIZE) == CS5) | |
262 | val |= 1; /* 1.5 stop bits */ //FIXME is this okay? | |
263 | else | |
264 | val |= 2; /* 2 stop bits */ | |
265 | } | |
266 | ||
267 | return set_value(cs, 3, val); | |
268 | } | |
269 | ||
270 | #else | |
271 | static int gigaset_set_modem_ctrl(struct cardstate *cs, unsigned old_state, | |
784d5858 | 272 | unsigned new_state) |
07dc1f9f HL |
273 | { |
274 | return -EINVAL; | |
275 | } | |
276 | ||
277 | static int gigaset_set_line_ctrl(struct cardstate *cs, unsigned cflag) | |
278 | { | |
279 | return -EINVAL; | |
280 | } | |
281 | ||
282 | static int gigaset_baud_rate(struct cardstate *cs, unsigned cflag) | |
283 | { | |
284 | return -EINVAL; | |
285 | } | |
286 | #endif | |
287 | ||
288 | ||
289 | /*================================================================================================================*/ | |
290 | static int gigaset_init_bchannel(struct bc_state *bcs) | |
291 | { | |
292 | /* nothing to do for M10x */ | |
293 | gigaset_bchannel_up(bcs); | |
294 | return 0; | |
295 | } | |
296 | ||
297 | static int gigaset_close_bchannel(struct bc_state *bcs) | |
298 | { | |
299 | /* nothing to do for M10x */ | |
300 | gigaset_bchannel_down(bcs); | |
301 | return 0; | |
302 | } | |
303 | ||
07dc1f9f HL |
304 | static int write_modem(struct cardstate *cs); |
305 | static int send_cb(struct cardstate *cs, struct cmdbuf_t *cb); | |
306 | ||
307 | ||
917f5085 TS |
308 | /* Write tasklet handler: Continue sending current skb, or send command, or |
309 | * start sending an skb from the send queue. | |
07dc1f9f HL |
310 | */ |
311 | static void gigaset_modem_fill(unsigned long data) | |
312 | { | |
313 | struct cardstate *cs = (struct cardstate *) data; | |
314 | struct bc_state *bcs = &cs->bcs[0]; /* only one channel */ | |
315 | struct cmdbuf_t *cb; | |
316 | unsigned long flags; | |
317 | int again; | |
318 | ||
784d5858 | 319 | gig_dbg(DEBUG_OUTPUT, "modem_fill"); |
07dc1f9f HL |
320 | |
321 | if (atomic_read(&cs->hw.usb->busy)) { | |
784d5858 | 322 | gig_dbg(DEBUG_OUTPUT, "modem_fill: busy"); |
07dc1f9f HL |
323 | return; |
324 | } | |
325 | ||
326 | do { | |
327 | again = 0; | |
328 | if (!bcs->tx_skb) { /* no skb is being sent */ | |
329 | spin_lock_irqsave(&cs->cmdlock, flags); | |
330 | cb = cs->cmdbuf; | |
331 | spin_unlock_irqrestore(&cs->cmdlock, flags); | |
332 | if (cb) { /* commands to send? */ | |
784d5858 | 333 | gig_dbg(DEBUG_OUTPUT, "modem_fill: cb"); |
07dc1f9f | 334 | if (send_cb(cs, cb) < 0) { |
784d5858 TS |
335 | gig_dbg(DEBUG_OUTPUT, |
336 | "modem_fill: send_cb failed"); | |
917f5085 TS |
337 | again = 1; /* no callback will be |
338 | called! */ | |
07dc1f9f HL |
339 | } |
340 | } else { /* skbs to send? */ | |
341 | bcs->tx_skb = skb_dequeue(&bcs->squeue); | |
342 | if (bcs->tx_skb) | |
784d5858 TS |
343 | gig_dbg(DEBUG_INTR, |
344 | "Dequeued skb (Adr: %lx)!", | |
345 | (unsigned long) bcs->tx_skb); | |
07dc1f9f HL |
346 | } |
347 | } | |
348 | ||
349 | if (bcs->tx_skb) { | |
784d5858 | 350 | gig_dbg(DEBUG_OUTPUT, "modem_fill: tx_skb"); |
07dc1f9f | 351 | if (write_modem(cs) < 0) { |
784d5858 TS |
352 | gig_dbg(DEBUG_OUTPUT, |
353 | "modem_fill: write_modem failed"); | |
07dc1f9f HL |
354 | // FIXME should we tell the LL? |
355 | again = 1; /* no callback will be called! */ | |
356 | } | |
357 | } | |
358 | } while (again); | |
359 | } | |
360 | ||
361 | /** | |
362 | * gigaset_read_int_callback | |
363 | * | |
784d5858 | 364 | * It is called if the data was received from the device. |
07dc1f9f HL |
365 | */ |
366 | static void gigaset_read_int_callback(struct urb *urb, struct pt_regs *regs) | |
367 | { | |
368 | int resubmit = 0; | |
369 | int r; | |
370 | struct cardstate *cs; | |
371 | unsigned numbytes; | |
372 | unsigned char *src; | |
07dc1f9f HL |
373 | struct inbuf_t *inbuf; |
374 | ||
375 | IFNULLRET(urb); | |
376 | inbuf = (struct inbuf_t *) urb->context; | |
377 | IFNULLRET(inbuf); | |
07dc1f9f | 378 | cs = inbuf->cs; |
784d5858 | 379 | IFNULLRET(cs); |
07dc1f9f HL |
380 | |
381 | if (!atomic_read(&cs->connected)) { | |
382 | err("%s: disconnected", __func__); | |
784d5858 | 383 | return; |
07dc1f9f HL |
384 | } |
385 | ||
386 | if (!urb->status) { | |
387 | numbytes = urb->actual_length; | |
388 | ||
389 | if (numbytes) { | |
390 | src = inbuf->rcvbuf; | |
391 | if (unlikely(*src)) | |
784d5858 TS |
392 | dev_warn(cs->dev, |
393 | "%s: There was no leading 0, but 0x%02x!\n", | |
394 | __func__, (unsigned) *src); | |
07dc1f9f HL |
395 | ++src; /* skip leading 0x00 */ |
396 | --numbytes; | |
397 | if (gigaset_fill_inbuf(inbuf, src, numbytes)) { | |
784d5858 | 398 | gig_dbg(DEBUG_INTR, "%s-->BH", __func__); |
07dc1f9f HL |
399 | gigaset_schedule_event(inbuf->cs); |
400 | } | |
401 | } else | |
784d5858 | 402 | gig_dbg(DEBUG_INTR, "Received zero block length"); |
07dc1f9f HL |
403 | resubmit = 1; |
404 | } else { | |
405 | /* The urb might have been killed. */ | |
784d5858 TS |
406 | gig_dbg(DEBUG_ANY, "%s - nonzero read bulk status received: %d", |
407 | __func__, urb->status); | |
07dc1f9f HL |
408 | if (urb->status != -ENOENT) /* not killed */ |
409 | resubmit = 1; | |
410 | } | |
784d5858 | 411 | |
07dc1f9f HL |
412 | if (resubmit) { |
413 | r = usb_submit_urb(urb, SLAB_ATOMIC); | |
414 | if (r) | |
784d5858 TS |
415 | dev_err(cs->dev, "error %d when resubmitting urb.\n", |
416 | -r); | |
07dc1f9f HL |
417 | } |
418 | } | |
419 | ||
420 | ||
917f5085 | 421 | /* This callback routine is called when data was transmitted to the device. */ |
07dc1f9f HL |
422 | static void gigaset_write_bulk_callback(struct urb *urb, struct pt_regs *regs) |
423 | { | |
424 | struct cardstate *cs = (struct cardstate *) urb->context; | |
425 | ||
426 | IFNULLRET(cs); | |
427 | #ifdef CONFIG_GIGASET_DEBUG | |
428 | if (!atomic_read(&cs->connected)) { | |
784d5858 | 429 | err("%s: not connected", __func__); |
07dc1f9f HL |
430 | return; |
431 | } | |
432 | #endif | |
433 | if (urb->status) | |
784d5858 TS |
434 | dev_err(cs->dev, "bulk transfer failed (status %d)\n", |
435 | -urb->status); | |
917f5085 | 436 | /* That's all we can do. Communication problems |
784d5858 | 437 | are handled by timeouts or network protocols. */ |
07dc1f9f HL |
438 | |
439 | atomic_set(&cs->hw.usb->busy, 0); | |
440 | tasklet_schedule(&cs->write_tasklet); | |
441 | } | |
442 | ||
443 | static int send_cb(struct cardstate *cs, struct cmdbuf_t *cb) | |
444 | { | |
445 | struct cmdbuf_t *tcb; | |
446 | unsigned long flags; | |
447 | int count; | |
448 | int status = -ENOENT; // FIXME | |
449 | struct usb_cardstate *ucs = cs->hw.usb; | |
450 | ||
451 | do { | |
452 | if (!cb->len) { | |
453 | tcb = cb; | |
454 | ||
455 | spin_lock_irqsave(&cs->cmdlock, flags); | |
456 | cs->cmdbytes -= cs->curlen; | |
784d5858 TS |
457 | gig_dbg(DEBUG_OUTPUT, "send_cb: sent %u bytes, %u left", |
458 | cs->curlen, cs->cmdbytes); | |
07dc1f9f HL |
459 | cs->cmdbuf = cb = cb->next; |
460 | if (cb) { | |
461 | cb->prev = NULL; | |
462 | cs->curlen = cb->len; | |
463 | } else { | |
464 | cs->lastcmdbuf = NULL; | |
465 | cs->curlen = 0; | |
466 | } | |
467 | spin_unlock_irqrestore(&cs->cmdlock, flags); | |
468 | ||
469 | if (tcb->wake_tasklet) | |
470 | tasklet_schedule(tcb->wake_tasklet); | |
471 | kfree(tcb); | |
472 | } | |
473 | if (cb) { | |
474 | count = min(cb->len, ucs->bulk_out_size); | |
475 | usb_fill_bulk_urb(ucs->bulk_out_urb, ucs->udev, | |
784d5858 TS |
476 | usb_sndbulkpipe(ucs->udev, |
477 | ucs->bulk_out_endpointAddr & 0x0f), | |
478 | cb->buf + cb->offset, count, | |
479 | gigaset_write_bulk_callback, cs); | |
07dc1f9f HL |
480 | |
481 | cb->offset += count; | |
482 | cb->len -= count; | |
483 | atomic_set(&ucs->busy, 1); | |
784d5858 | 484 | gig_dbg(DEBUG_OUTPUT, "send_cb: send %d bytes", count); |
07dc1f9f HL |
485 | |
486 | status = usb_submit_urb(ucs->bulk_out_urb, SLAB_ATOMIC); | |
487 | if (status) { | |
488 | atomic_set(&ucs->busy, 0); | |
784d5858 TS |
489 | dev_err(cs->dev, |
490 | "could not submit urb (error %d)\n", | |
491 | -status); | |
917f5085 TS |
492 | cb->len = 0; /* skip urb => remove cb+wakeup |
493 | in next loop cycle */ | |
07dc1f9f HL |
494 | } |
495 | } | |
917f5085 | 496 | } while (cb && status); /* next command on error */ |
07dc1f9f HL |
497 | |
498 | return status; | |
499 | } | |
500 | ||
917f5085 | 501 | /* Send command to device. */ |
07dc1f9f | 502 | static int gigaset_write_cmd(struct cardstate *cs, const unsigned char *buf, |
784d5858 | 503 | int len, struct tasklet_struct *wake_tasklet) |
07dc1f9f HL |
504 | { |
505 | struct cmdbuf_t *cb; | |
506 | unsigned long flags; | |
507 | ||
508 | gigaset_dbg_buffer(atomic_read(&cs->mstate) != MS_LOCKED ? | |
784d5858 TS |
509 | DEBUG_TRANSCMD : DEBUG_LOCKCMD, |
510 | "CMD Transmit", len, buf, 0); | |
07dc1f9f HL |
511 | |
512 | if (!atomic_read(&cs->connected)) { | |
513 | err("%s: not connected", __func__); | |
514 | return -ENODEV; | |
515 | } | |
516 | ||
517 | if (len <= 0) | |
518 | return 0; | |
519 | ||
520 | if (!(cb = kmalloc(sizeof(struct cmdbuf_t) + len, GFP_ATOMIC))) { | |
784d5858 | 521 | dev_err(cs->dev, "%s: out of memory\n", __func__); |
07dc1f9f HL |
522 | return -ENOMEM; |
523 | } | |
524 | ||
525 | memcpy(cb->buf, buf, len); | |
526 | cb->len = len; | |
527 | cb->offset = 0; | |
528 | cb->next = NULL; | |
529 | cb->wake_tasklet = wake_tasklet; | |
530 | ||
531 | spin_lock_irqsave(&cs->cmdlock, flags); | |
532 | cb->prev = cs->lastcmdbuf; | |
533 | if (cs->lastcmdbuf) | |
534 | cs->lastcmdbuf->next = cb; | |
535 | else { | |
536 | cs->cmdbuf = cb; | |
537 | cs->curlen = len; | |
538 | } | |
539 | cs->cmdbytes += len; | |
540 | cs->lastcmdbuf = cb; | |
541 | spin_unlock_irqrestore(&cs->cmdlock, flags); | |
542 | ||
543 | tasklet_schedule(&cs->write_tasklet); | |
544 | return len; | |
545 | } | |
546 | ||
547 | static int gigaset_write_room(struct cardstate *cs) | |
548 | { | |
549 | unsigned long flags; | |
550 | unsigned bytes; | |
551 | ||
552 | spin_lock_irqsave(&cs->cmdlock, flags); | |
553 | bytes = cs->cmdbytes; | |
554 | spin_unlock_irqrestore(&cs->cmdlock, flags); | |
555 | ||
556 | return bytes < IF_WRITEBUF ? IF_WRITEBUF - bytes : 0; | |
557 | } | |
558 | ||
559 | static int gigaset_chars_in_buffer(struct cardstate *cs) | |
560 | { | |
561 | return cs->cmdbytes; | |
562 | } | |
563 | ||
564 | static int gigaset_brkchars(struct cardstate *cs, const unsigned char buf[6]) | |
565 | { | |
566 | #ifdef CONFIG_GIGASET_UNDOCREQ | |
784d5858 TS |
567 | struct usb_device *udev = cs->hw.usb->udev; |
568 | ||
07dc1f9f HL |
569 | gigaset_dbg_buffer(DEBUG_USBREQ, "brkchars", 6, buf, 0); |
570 | memcpy(cs->hw.usb->bchars, buf, 6); | |
784d5858 TS |
571 | return usb_control_msg(udev, usb_sndctrlpipe(udev, 0), 0x19, 0x41, |
572 | 0, 0, &buf, 6, 2000); | |
07dc1f9f HL |
573 | #else |
574 | return -EINVAL; | |
575 | #endif | |
576 | } | |
577 | ||
578 | static int gigaset_freebcshw(struct bc_state *bcs) | |
579 | { | |
580 | if (!bcs->hw.usb) | |
581 | return 0; | |
582 | //FIXME | |
583 | kfree(bcs->hw.usb); | |
584 | return 1; | |
585 | } | |
586 | ||
587 | /* Initialize the b-channel structure */ | |
588 | static int gigaset_initbcshw(struct bc_state *bcs) | |
589 | { | |
590 | bcs->hw.usb = kmalloc(sizeof(struct usb_bc_state), GFP_KERNEL); | |
591 | if (!bcs->hw.usb) | |
592 | return 0; | |
593 | ||
07dc1f9f HL |
594 | return 1; |
595 | } | |
596 | ||
597 | static void gigaset_reinitbcshw(struct bc_state *bcs) | |
598 | { | |
599 | } | |
600 | ||
601 | static void gigaset_freecshw(struct cardstate *cs) | |
602 | { | |
07dc1f9f HL |
603 | tasklet_kill(&cs->write_tasklet); |
604 | kfree(cs->hw.usb); | |
605 | } | |
606 | ||
607 | static int gigaset_initcshw(struct cardstate *cs) | |
608 | { | |
609 | struct usb_cardstate *ucs; | |
610 | ||
611 | cs->hw.usb = ucs = | |
612 | kmalloc(sizeof(struct usb_cardstate), GFP_KERNEL); | |
613 | if (!ucs) | |
614 | return 0; | |
615 | ||
616 | ucs->bchars[0] = 0; | |
617 | ucs->bchars[1] = 0; | |
618 | ucs->bchars[2] = 0; | |
619 | ucs->bchars[3] = 0; | |
620 | ucs->bchars[4] = 0x11; | |
621 | ucs->bchars[5] = 0x13; | |
622 | ucs->bulk_out_buffer = NULL; | |
623 | ucs->bulk_out_urb = NULL; | |
624 | //ucs->urb_cmd_out = NULL; | |
625 | ucs->read_urb = NULL; | |
626 | tasklet_init(&cs->write_tasklet, | |
784d5858 | 627 | &gigaset_modem_fill, (unsigned long) cs); |
07dc1f9f HL |
628 | |
629 | return 1; | |
630 | } | |
631 | ||
917f5085 | 632 | /* Send data from current skb to the device. */ |
07dc1f9f HL |
633 | static int write_modem(struct cardstate *cs) |
634 | { | |
635 | int ret; | |
636 | int count; | |
637 | struct bc_state *bcs = &cs->bcs[0]; /* only one channel */ | |
638 | struct usb_cardstate *ucs = cs->hw.usb; | |
07dc1f9f HL |
639 | |
640 | IFNULLRETVAL(bcs->tx_skb, -EINVAL); | |
641 | ||
784d5858 | 642 | gig_dbg(DEBUG_WRITE, "len: %d...", bcs->tx_skb->len); |
07dc1f9f HL |
643 | |
644 | ret = -ENODEV; | |
645 | IFNULLGOTO(ucs->bulk_out_buffer, error); | |
646 | IFNULLGOTO(ucs->bulk_out_urb, error); | |
647 | ret = 0; | |
648 | ||
649 | if (!bcs->tx_skb->len) { | |
650 | dev_kfree_skb_any(bcs->tx_skb); | |
651 | bcs->tx_skb = NULL; | |
652 | return -EINVAL; | |
653 | } | |
654 | ||
655 | /* Copy data to bulk out buffer and // FIXME copying not necessary | |
656 | * transmit data | |
657 | */ | |
658 | count = min(bcs->tx_skb->len, (unsigned) ucs->bulk_out_size); | |
659 | memcpy(ucs->bulk_out_buffer, bcs->tx_skb->data, count); | |
660 | skb_pull(bcs->tx_skb, count); | |
661 | ||
662 | usb_fill_bulk_urb(ucs->bulk_out_urb, ucs->udev, | |
784d5858 TS |
663 | usb_sndbulkpipe(ucs->udev, |
664 | ucs->bulk_out_endpointAddr & 0x0f), | |
665 | ucs->bulk_out_buffer, count, | |
666 | gigaset_write_bulk_callback, cs); | |
07dc1f9f | 667 | atomic_set(&ucs->busy, 1); |
784d5858 | 668 | gig_dbg(DEBUG_OUTPUT, "write_modem: send %d bytes", count); |
07dc1f9f HL |
669 | |
670 | ret = usb_submit_urb(ucs->bulk_out_urb, SLAB_ATOMIC); | |
671 | if (ret) { | |
784d5858 | 672 | dev_err(cs->dev, "could not submit urb (error %d)\n", -ret); |
07dc1f9f HL |
673 | atomic_set(&ucs->busy, 0); |
674 | } | |
675 | if (!bcs->tx_skb->len) { | |
676 | /* skb sent completely */ | |
677 | gigaset_skb_sent(bcs, bcs->tx_skb); //FIXME also, when ret<0? | |
678 | ||
784d5858 TS |
679 | gig_dbg(DEBUG_INTR, "kfree skb (Adr: %lx)!", |
680 | (unsigned long) bcs->tx_skb); | |
07dc1f9f HL |
681 | dev_kfree_skb_any(bcs->tx_skb); |
682 | bcs->tx_skb = NULL; | |
683 | } | |
684 | ||
685 | return ret; | |
686 | error: | |
687 | dev_kfree_skb_any(bcs->tx_skb); | |
688 | bcs->tx_skb = NULL; | |
689 | return ret; | |
690 | ||
691 | } | |
692 | ||
693 | static int gigaset_probe(struct usb_interface *interface, | |
784d5858 | 694 | const struct usb_device_id *id) |
07dc1f9f HL |
695 | { |
696 | int retval; | |
697 | struct usb_device *udev = interface_to_usbdev(interface); | |
698 | unsigned int ifnum; | |
699 | struct usb_host_interface *hostif; | |
700 | struct cardstate *cs = NULL; | |
701 | struct usb_cardstate *ucs = NULL; | |
07dc1f9f | 702 | struct usb_endpoint_descriptor *endpoint; |
07dc1f9f HL |
703 | int buffer_size; |
704 | int alt; | |
07dc1f9f | 705 | |
784d5858 TS |
706 | gig_dbg(DEBUG_ANY, |
707 | "%s: Check if device matches .. (Vendor: 0x%x, Product: 0x%x)", | |
708 | __func__, le16_to_cpu(udev->descriptor.idVendor), | |
709 | le16_to_cpu(udev->descriptor.idProduct)); | |
07dc1f9f HL |
710 | |
711 | retval = -ENODEV; //FIXME | |
712 | ||
713 | /* See if the device offered us matches what we can accept */ | |
714 | if ((le16_to_cpu(udev->descriptor.idVendor != USB_M105_VENDOR_ID)) || | |
715 | (le16_to_cpu(udev->descriptor.idProduct != USB_M105_PRODUCT_ID))) | |
716 | return -ENODEV; | |
717 | ||
718 | /* this starts to become ascii art... */ | |
719 | hostif = interface->cur_altsetting; | |
720 | alt = hostif->desc.bAlternateSetting; | |
721 | ifnum = hostif->desc.bInterfaceNumber; // FIXME ? | |
722 | ||
723 | if (alt != 0 || ifnum != 0) { | |
784d5858 | 724 | dev_warn(&udev->dev, "ifnum %d, alt %d\n", ifnum, alt); |
07dc1f9f HL |
725 | return -ENODEV; |
726 | } | |
727 | ||
728 | /* Reject application specific intefaces | |
729 | * | |
730 | */ | |
731 | if (hostif->desc.bInterfaceClass != 255) { | |
784d5858 TS |
732 | dev_info(&udev->dev, |
733 | "%s: Device matched but iface_desc[%d]->bInterfaceClass==%d!\n", | |
734 | __func__, ifnum, hostif->desc.bInterfaceClass); | |
07dc1f9f HL |
735 | return -ENODEV; |
736 | } | |
737 | ||
784d5858 | 738 | dev_info(&udev->dev, "%s: Device matched ... !\n", __func__); |
07dc1f9f HL |
739 | |
740 | cs = gigaset_getunassignedcs(driver); | |
741 | if (!cs) { | |
784d5858 | 742 | dev_warn(&udev->dev, "no free cardstate\n"); |
07dc1f9f HL |
743 | return -ENODEV; |
744 | } | |
745 | ucs = cs->hw.usb; | |
746 | ||
784d5858 TS |
747 | /* save off device structure ptrs for later use */ |
748 | usb_get_dev(udev); | |
749 | ucs->udev = udev; | |
750 | ucs->interface = interface; | |
b1d47464 TS |
751 | cs->dev = &interface->dev; |
752 | ||
753 | /* save address of controller structure */ | |
754 | usb_set_intfdata(interface, cs); // dev_set_drvdata(&interface->dev, cs); | |
784d5858 | 755 | |
07dc1f9f HL |
756 | endpoint = &hostif->endpoint[0].desc; |
757 | ||
758 | buffer_size = le16_to_cpu(endpoint->wMaxPacketSize); | |
759 | ucs->bulk_out_size = buffer_size; | |
760 | ucs->bulk_out_endpointAddr = endpoint->bEndpointAddress; | |
761 | ucs->bulk_out_buffer = kmalloc(buffer_size, GFP_KERNEL); | |
762 | if (!ucs->bulk_out_buffer) { | |
784d5858 | 763 | dev_err(cs->dev, "Couldn't allocate bulk_out_buffer\n"); |
07dc1f9f HL |
764 | retval = -ENOMEM; |
765 | goto error; | |
766 | } | |
767 | ||
768 | ucs->bulk_out_urb = usb_alloc_urb(0, SLAB_KERNEL); | |
769 | if (!ucs->bulk_out_urb) { | |
784d5858 | 770 | dev_err(cs->dev, "Couldn't allocate bulk_out_urb\n"); |
07dc1f9f HL |
771 | retval = -ENOMEM; |
772 | goto error; | |
773 | } | |
774 | ||
775 | endpoint = &hostif->endpoint[1].desc; | |
776 | ||
777 | atomic_set(&ucs->busy, 0); | |
07dc1f9f HL |
778 | |
779 | ucs->read_urb = usb_alloc_urb(0, SLAB_KERNEL); | |
780 | if (!ucs->read_urb) { | |
784d5858 | 781 | dev_err(cs->dev, "No free urbs available\n"); |
07dc1f9f HL |
782 | retval = -ENOMEM; |
783 | goto error; | |
784 | } | |
785 | buffer_size = le16_to_cpu(endpoint->wMaxPacketSize); | |
786 | ucs->rcvbuf_size = buffer_size; | |
787 | ucs->int_in_endpointAddr = endpoint->bEndpointAddress; | |
788 | cs->inbuf[0].rcvbuf = kmalloc(buffer_size, GFP_KERNEL); | |
789 | if (!cs->inbuf[0].rcvbuf) { | |
784d5858 | 790 | dev_err(cs->dev, "Couldn't allocate rcvbuf\n"); |
07dc1f9f HL |
791 | retval = -ENOMEM; |
792 | goto error; | |
793 | } | |
794 | /* Fill the interrupt urb and send it to the core */ | |
795 | usb_fill_int_urb(ucs->read_urb, udev, | |
784d5858 TS |
796 | usb_rcvintpipe(udev, |
797 | endpoint->bEndpointAddress & 0x0f), | |
798 | cs->inbuf[0].rcvbuf, buffer_size, | |
799 | gigaset_read_int_callback, | |
800 | cs->inbuf + 0, endpoint->bInterval); | |
07dc1f9f HL |
801 | |
802 | retval = usb_submit_urb(ucs->read_urb, SLAB_KERNEL); | |
803 | if (retval) { | |
784d5858 | 804 | dev_err(cs->dev, "Could not submit URB (error %d)\n", -retval); |
07dc1f9f HL |
805 | goto error; |
806 | } | |
807 | ||
808 | /* tell common part that the device is ready */ | |
809 | if (startmode == SM_LOCKED) | |
810 | atomic_set(&cs->mstate, MS_LOCKED); | |
b1d47464 | 811 | |
07dc1f9f HL |
812 | if (!gigaset_start(cs)) { |
813 | tasklet_kill(&cs->write_tasklet); | |
814 | retval = -ENODEV; //FIXME | |
815 | goto error; | |
816 | } | |
07dc1f9f HL |
817 | return 0; |
818 | ||
819 | error: | |
820 | if (ucs->read_urb) | |
821 | usb_kill_urb(ucs->read_urb); | |
822 | kfree(ucs->bulk_out_buffer); | |
823 | if (ucs->bulk_out_urb != NULL) | |
824 | usb_free_urb(ucs->bulk_out_urb); | |
825 | kfree(cs->inbuf[0].rcvbuf); | |
826 | if (ucs->read_urb != NULL) | |
827 | usb_free_urb(ucs->read_urb); | |
b1d47464 | 828 | usb_set_intfdata(interface, NULL); |
07dc1f9f HL |
829 | ucs->read_urb = ucs->bulk_out_urb = NULL; |
830 | cs->inbuf[0].rcvbuf = ucs->bulk_out_buffer = NULL; | |
784d5858 TS |
831 | usb_put_dev(ucs->udev); |
832 | ucs->udev = NULL; | |
833 | ucs->interface = NULL; | |
07dc1f9f HL |
834 | gigaset_unassign(cs); |
835 | return retval; | |
836 | } | |
837 | ||
838 | /** | |
839 | * skel_disconnect | |
840 | */ | |
841 | static void gigaset_disconnect(struct usb_interface *interface) | |
842 | { | |
843 | struct cardstate *cs; | |
844 | struct usb_cardstate *ucs; | |
845 | ||
846 | cs = usb_get_intfdata(interface); | |
07dc1f9f HL |
847 | ucs = cs->hw.usb; |
848 | usb_kill_urb(ucs->read_urb); | |
07dc1f9f HL |
849 | |
850 | gigaset_stop(cs); | |
851 | ||
b1d47464 | 852 | usb_set_intfdata(interface, NULL); |
07dc1f9f HL |
853 | tasklet_kill(&cs->write_tasklet); |
854 | ||
784d5858 | 855 | usb_kill_urb(ucs->bulk_out_urb); /* FIXME: only if active? */ |
07dc1f9f HL |
856 | |
857 | kfree(ucs->bulk_out_buffer); | |
858 | if (ucs->bulk_out_urb != NULL) | |
859 | usb_free_urb(ucs->bulk_out_urb); | |
07dc1f9f HL |
860 | kfree(cs->inbuf[0].rcvbuf); |
861 | if (ucs->read_urb != NULL) | |
862 | usb_free_urb(ucs->read_urb); | |
917f5085 | 863 | ucs->read_urb = ucs->bulk_out_urb = NULL; |
07dc1f9f HL |
864 | cs->inbuf[0].rcvbuf = ucs->bulk_out_buffer = NULL; |
865 | ||
b1d47464 TS |
866 | usb_put_dev(ucs->udev); |
867 | ucs->interface = NULL; | |
868 | ucs->udev = NULL; | |
869 | cs->dev = NULL; | |
07dc1f9f HL |
870 | gigaset_unassign(cs); |
871 | } | |
872 | ||
873 | static struct gigaset_ops ops = { | |
874 | gigaset_write_cmd, | |
875 | gigaset_write_room, | |
876 | gigaset_chars_in_buffer, | |
877 | gigaset_brkchars, | |
878 | gigaset_init_bchannel, | |
879 | gigaset_close_bchannel, | |
880 | gigaset_initbcshw, | |
881 | gigaset_freebcshw, | |
882 | gigaset_reinitbcshw, | |
883 | gigaset_initcshw, | |
884 | gigaset_freecshw, | |
885 | gigaset_set_modem_ctrl, | |
886 | gigaset_baud_rate, | |
887 | gigaset_set_line_ctrl, | |
888 | gigaset_m10x_send_skb, | |
889 | gigaset_m10x_input, | |
890 | }; | |
891 | ||
892 | /** | |
893 | * usb_gigaset_init | |
894 | * This function is called while kernel-module is loaded | |
895 | */ | |
896 | static int __init usb_gigaset_init(void) | |
897 | { | |
898 | int result; | |
899 | ||
900 | /* allocate memory for our driver state and intialize it */ | |
901 | if ((driver = gigaset_initdriver(GIGASET_MINOR, GIGASET_MINORS, | |
784d5858 TS |
902 | GIGASET_MODULENAME, GIGASET_DEVNAME, |
903 | GIGASET_DEVFSNAME, &ops, | |
904 | THIS_MODULE)) == NULL) | |
07dc1f9f HL |
905 | goto error; |
906 | ||
907 | /* allocate memory for our device state and intialize it */ | |
908 | cardstate = gigaset_initcs(driver, 1, 1, 0, cidmode, GIGASET_MODULENAME); | |
909 | if (!cardstate) | |
910 | goto error; | |
911 | ||
912 | /* register this driver with the USB subsystem */ | |
913 | result = usb_register(&gigaset_usb_driver); | |
914 | if (result < 0) { | |
915 | err("usb_gigaset: usb_register failed (error %d)", | |
916 | -result); | |
917 | goto error; | |
918 | } | |
919 | ||
920 | info(DRIVER_AUTHOR); | |
921 | info(DRIVER_DESC); | |
922 | return 0; | |
923 | ||
924 | error: if (cardstate) | |
925 | gigaset_freecs(cardstate); | |
926 | cardstate = NULL; | |
927 | if (driver) | |
928 | gigaset_freedriver(driver); | |
929 | driver = NULL; | |
930 | return -1; | |
931 | } | |
932 | ||
933 | ||
934 | /** | |
935 | * usb_gigaset_exit | |
936 | * This function is called while unloading the kernel-module | |
937 | */ | |
938 | static void __exit usb_gigaset_exit(void) | |
939 | { | |
940 | gigaset_blockdriver(driver); /* => probe will fail | |
784d5858 TS |
941 | * => no gigaset_start any more |
942 | */ | |
07dc1f9f HL |
943 | |
944 | gigaset_shutdown(cardstate); | |
945 | /* from now on, no isdn callback should be possible */ | |
946 | ||
947 | /* deregister this driver with the USB subsystem */ | |
948 | usb_deregister(&gigaset_usb_driver); | |
949 | /* this will call the disconnect-callback */ | |
950 | /* from now on, no disconnect/probe callback should be running */ | |
951 | ||
952 | gigaset_freecs(cardstate); | |
953 | cardstate = NULL; | |
954 | gigaset_freedriver(driver); | |
955 | driver = NULL; | |
956 | } | |
957 | ||
958 | ||
959 | module_init(usb_gigaset_init); | |
960 | module_exit(usb_gigaset_exit); | |
961 | ||
962 | MODULE_AUTHOR(DRIVER_AUTHOR); | |
963 | MODULE_DESCRIPTION(DRIVER_DESC); | |
964 | ||
965 | MODULE_LICENSE("GPL"); |