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USB: xhci: Work around for chain bit in link TRBs.
[linux-2.6/x86.git] / drivers / usb / serial / visor.c
blob1aa5d20a5d998d8d4511cae37d24620128f10474
1 /*
2 * USB HandSpring Visor, Palm m50x, and Sony Clie driver
3 * (supports all of the Palm OS USB devices)
4 *
5 * Copyright (C) 1999 - 2004
6 * Greg Kroah-Hartman (greg@kroah.com)
7 *
8 * This program is free software; you can redistribute it and/or
9 * modify it under the terms of the GNU General Public License version
10 * 2 as published by the Free Software Foundation.
11 *
12 * See Documentation/usb/usb-serial.txt for more information on using this
13 * driver
14 *
15 */
16
17 #include <linux/kernel.h>
18 #include <linux/errno.h>
19 #include <linux/init.h>
20 #include <linux/slab.h>
21 #include <linux/tty.h>
22 #include <linux/tty_driver.h>
23 #include <linux/tty_flip.h>
24 #include <linux/module.h>
25 #include <linux/moduleparam.h>
26 #include <linux/spinlock.h>
27 #include <linux/uaccess.h>
28 #include <linux/usb.h>
29 #include <linux/usb/serial.h>
30 #include "visor.h"
31
32 /*
33 * Version Information
34 */
35 #define DRIVER_AUTHOR "Greg Kroah-Hartman <greg@kroah.com>"
36 #define DRIVER_DESC "USB HandSpring Visor / Palm OS driver"
37
38 /* function prototypes for a handspring visor */
39 static int visor_open(struct tty_struct *tty, struct usb_serial_port *port);
40 static void visor_close(struct usb_serial_port *port);
41 static int visor_write(struct tty_struct *tty, struct usb_serial_port *port,
42 const unsigned char *buf, int count);
43 static int visor_write_room(struct tty_struct *tty);
44 static void visor_throttle(struct tty_struct *tty);
45 static void visor_unthrottle(struct tty_struct *tty);
46 static int visor_probe(struct usb_serial *serial,
47 const struct usb_device_id *id);
48 static int visor_calc_num_ports(struct usb_serial *serial);
49 static void visor_release(struct usb_serial *serial);
50 static void visor_write_bulk_callback(struct urb *urb);
51 static void visor_read_bulk_callback(struct urb *urb);
52 static void visor_read_int_callback(struct urb *urb);
53 static int clie_3_5_startup(struct usb_serial *serial);
54 static int treo_attach(struct usb_serial *serial);
55 static int clie_5_attach(struct usb_serial *serial);
56 static int palm_os_3_probe(struct usb_serial *serial,
57 const struct usb_device_id *id);
58 static int palm_os_4_probe(struct usb_serial *serial,
59 const struct usb_device_id *id);
60
61 /* Parameters that may be passed into the module. */
62 static int debug;
63 static __u16 vendor;
64 static __u16 product;
65
66 static struct usb_device_id id_table [] = {
67 { USB_DEVICE(HANDSPRING_VENDOR_ID, HANDSPRING_VISOR_ID),
68 .driver_info = (kernel_ulong_t)&palm_os_3_probe },
69 { USB_DEVICE(HANDSPRING_VENDOR_ID, HANDSPRING_TREO_ID),
70 .driver_info = (kernel_ulong_t)&palm_os_4_probe },
71 { USB_DEVICE(HANDSPRING_VENDOR_ID, HANDSPRING_TREO600_ID),
72 .driver_info = (kernel_ulong_t)&palm_os_4_probe },
73 { USB_DEVICE(GSPDA_VENDOR_ID, GSPDA_XPLORE_M68_ID),
74 .driver_info = (kernel_ulong_t)&palm_os_4_probe },
75 { USB_DEVICE(PALM_VENDOR_ID, PALM_M500_ID),
76 .driver_info = (kernel_ulong_t)&palm_os_4_probe },
77 { USB_DEVICE(PALM_VENDOR_ID, PALM_M505_ID),
78 .driver_info = (kernel_ulong_t)&palm_os_4_probe },
79 { USB_DEVICE(PALM_VENDOR_ID, PALM_M515_ID),
80 .driver_info = (kernel_ulong_t)&palm_os_4_probe },
81 { USB_DEVICE(PALM_VENDOR_ID, PALM_I705_ID),
82 .driver_info = (kernel_ulong_t)&palm_os_4_probe },
83 { USB_DEVICE(PALM_VENDOR_ID, PALM_M100_ID),
84 .driver_info = (kernel_ulong_t)&palm_os_4_probe },
85 { USB_DEVICE(PALM_VENDOR_ID, PALM_M125_ID),
86 .driver_info = (kernel_ulong_t)&palm_os_4_probe },
87 { USB_DEVICE(PALM_VENDOR_ID, PALM_M130_ID),
88 .driver_info = (kernel_ulong_t)&palm_os_4_probe },
89 { USB_DEVICE(PALM_VENDOR_ID, PALM_TUNGSTEN_T_ID),
90 .driver_info = (kernel_ulong_t)&palm_os_4_probe },
91 { USB_DEVICE(PALM_VENDOR_ID, PALM_TREO_650),
92 .driver_info = (kernel_ulong_t)&palm_os_4_probe },
93 { USB_DEVICE(PALM_VENDOR_ID, PALM_TUNGSTEN_Z_ID),
94 .driver_info = (kernel_ulong_t)&palm_os_4_probe },
95 { USB_DEVICE(PALM_VENDOR_ID, PALM_ZIRE_ID),
96 .driver_info = (kernel_ulong_t)&palm_os_4_probe },
97 { USB_DEVICE(SONY_VENDOR_ID, SONY_CLIE_4_0_ID),
98 .driver_info = (kernel_ulong_t)&palm_os_4_probe },
99 { USB_DEVICE(SONY_VENDOR_ID, SONY_CLIE_S360_ID),
100 .driver_info = (kernel_ulong_t)&palm_os_4_probe },
101 { USB_DEVICE(SONY_VENDOR_ID, SONY_CLIE_4_1_ID),
102 .driver_info = (kernel_ulong_t)&palm_os_4_probe },
103 { USB_DEVICE(SONY_VENDOR_ID, SONY_CLIE_NX60_ID),
104 .driver_info = (kernel_ulong_t)&palm_os_4_probe },
105 { USB_DEVICE(SONY_VENDOR_ID, SONY_CLIE_NZ90V_ID),
106 .driver_info = (kernel_ulong_t)&palm_os_4_probe },
107 { USB_DEVICE(SONY_VENDOR_ID, SONY_CLIE_TJ25_ID),
108 .driver_info = (kernel_ulong_t)&palm_os_4_probe },
109 { USB_DEVICE(ACER_VENDOR_ID, ACER_S10_ID),
110 .driver_info = (kernel_ulong_t)&palm_os_4_probe },
111 { USB_DEVICE(SAMSUNG_VENDOR_ID, SAMSUNG_SCH_I330_ID),
112 .driver_info = (kernel_ulong_t)&palm_os_4_probe },
113 { USB_DEVICE(SAMSUNG_VENDOR_ID, SAMSUNG_SPH_I500_ID),
114 .driver_info = (kernel_ulong_t)&palm_os_4_probe },
115 { USB_DEVICE(TAPWAVE_VENDOR_ID, TAPWAVE_ZODIAC_ID),
116 .driver_info = (kernel_ulong_t)&palm_os_4_probe },
117 { USB_DEVICE(GARMIN_VENDOR_ID, GARMIN_IQUE_3600_ID),
118 .driver_info = (kernel_ulong_t)&palm_os_4_probe },
119 { USB_DEVICE(ACEECA_VENDOR_ID, ACEECA_MEZ1000_ID),
120 .driver_info = (kernel_ulong_t)&palm_os_4_probe },
121 { USB_DEVICE(KYOCERA_VENDOR_ID, KYOCERA_7135_ID),
122 .driver_info = (kernel_ulong_t)&palm_os_4_probe },
123 { USB_DEVICE(FOSSIL_VENDOR_ID, FOSSIL_ABACUS_ID),
124 .driver_info = (kernel_ulong_t)&palm_os_4_probe },
125 { }, /* optional parameter entry */
126 { } /* Terminating entry */
127 };
128
129 static struct usb_device_id clie_id_5_table [] = {
130 { USB_DEVICE(SONY_VENDOR_ID, SONY_CLIE_UX50_ID),
131 .driver_info = (kernel_ulong_t)&palm_os_4_probe },
132 { }, /* optional parameter entry */
133 { } /* Terminating entry */
134 };
135
136 static struct usb_device_id clie_id_3_5_table [] = {
137 { USB_DEVICE(SONY_VENDOR_ID, SONY_CLIE_3_5_ID) },
138 { } /* Terminating entry */
139 };
140
141 static struct usb_device_id id_table_combined [] = {
142 { USB_DEVICE(HANDSPRING_VENDOR_ID, HANDSPRING_VISOR_ID) },
143 { USB_DEVICE(HANDSPRING_VENDOR_ID, HANDSPRING_TREO_ID) },
144 { USB_DEVICE(HANDSPRING_VENDOR_ID, HANDSPRING_TREO600_ID) },
145 { USB_DEVICE(GSPDA_VENDOR_ID, GSPDA_XPLORE_M68_ID) },
146 { USB_DEVICE(PALM_VENDOR_ID, PALM_M500_ID) },
147 { USB_DEVICE(PALM_VENDOR_ID, PALM_M505_ID) },
148 { USB_DEVICE(PALM_VENDOR_ID, PALM_M515_ID) },
149 { USB_DEVICE(PALM_VENDOR_ID, PALM_I705_ID) },
150 { USB_DEVICE(PALM_VENDOR_ID, PALM_M100_ID) },
151 { USB_DEVICE(PALM_VENDOR_ID, PALM_M125_ID) },
152 { USB_DEVICE(PALM_VENDOR_ID, PALM_M130_ID) },
153 { USB_DEVICE(PALM_VENDOR_ID, PALM_TUNGSTEN_T_ID) },
154 { USB_DEVICE(PALM_VENDOR_ID, PALM_TREO_650) },
155 { USB_DEVICE(PALM_VENDOR_ID, PALM_TUNGSTEN_Z_ID) },
156 { USB_DEVICE(PALM_VENDOR_ID, PALM_ZIRE_ID) },
157 { USB_DEVICE(SONY_VENDOR_ID, SONY_CLIE_3_5_ID) },
158 { USB_DEVICE(SONY_VENDOR_ID, SONY_CLIE_4_0_ID) },
159 { USB_DEVICE(SONY_VENDOR_ID, SONY_CLIE_S360_ID) },
160 { USB_DEVICE(SONY_VENDOR_ID, SONY_CLIE_4_1_ID) },
161 { USB_DEVICE(SONY_VENDOR_ID, SONY_CLIE_NX60_ID) },
162 { USB_DEVICE(SONY_VENDOR_ID, SONY_CLIE_NZ90V_ID) },
163 { USB_DEVICE(SONY_VENDOR_ID, SONY_CLIE_UX50_ID) },
164 { USB_DEVICE(SONY_VENDOR_ID, SONY_CLIE_TJ25_ID) },
165 { USB_DEVICE(SAMSUNG_VENDOR_ID, SAMSUNG_SCH_I330_ID) },
166 { USB_DEVICE(SAMSUNG_VENDOR_ID, SAMSUNG_SPH_I500_ID) },
167 { USB_DEVICE(TAPWAVE_VENDOR_ID, TAPWAVE_ZODIAC_ID) },
168 { USB_DEVICE(GARMIN_VENDOR_ID, GARMIN_IQUE_3600_ID) },
169 { USB_DEVICE(ACEECA_VENDOR_ID, ACEECA_MEZ1000_ID) },
170 { USB_DEVICE(KYOCERA_VENDOR_ID, KYOCERA_7135_ID) },
171 { USB_DEVICE(FOSSIL_VENDOR_ID, FOSSIL_ABACUS_ID) },
172 { }, /* optional parameter entry */
173 { } /* Terminating entry */
174 };
175
176 MODULE_DEVICE_TABLE(usb, id_table_combined);
177
178 static struct usb_driver visor_driver = {
179 .name = "visor",
180 .probe = usb_serial_probe,
181 .disconnect = usb_serial_disconnect,
182 .id_table = id_table_combined,
183 .no_dynamic_id = 1,
184 };
185
186 /* All of the device info needed for the Handspring Visor,
187 and Palm 4.0 devices */
188 static struct usb_serial_driver handspring_device = {
189 .driver = {
190 .owner = THIS_MODULE,
191 .name = "visor",
192 },
193 .description = "Handspring Visor / Palm OS",
194 .usb_driver = &visor_driver,
195 .id_table = id_table,
196 .num_ports = 2,
197 .open = visor_open,
198 .close = visor_close,
199 .throttle = visor_throttle,
200 .unthrottle = visor_unthrottle,
201 .attach = treo_attach,
202 .probe = visor_probe,
203 .calc_num_ports = visor_calc_num_ports,
204 .release = visor_release,
205 .write = visor_write,
206 .write_room = visor_write_room,
207 .write_bulk_callback = visor_write_bulk_callback,
208 .read_bulk_callback = visor_read_bulk_callback,
209 .read_int_callback = visor_read_int_callback,
210 };
211
212 /* All of the device info needed for the Clie UX50, TH55 Palm 5.0 devices */
213 static struct usb_serial_driver clie_5_device = {
214 .driver = {
215 .owner = THIS_MODULE,
216 .name = "clie_5",
217 },
218 .description = "Sony Clie 5.0",
219 .usb_driver = &visor_driver,
220 .id_table = clie_id_5_table,
221 .num_ports = 2,
222 .open = visor_open,
223 .close = visor_close,
224 .throttle = visor_throttle,
225 .unthrottle = visor_unthrottle,
226 .attach = clie_5_attach,
227 .probe = visor_probe,
228 .calc_num_ports = visor_calc_num_ports,
229 .release = visor_release,
230 .write = visor_write,
231 .write_room = visor_write_room,
232 .write_bulk_callback = visor_write_bulk_callback,
233 .read_bulk_callback = visor_read_bulk_callback,
234 .read_int_callback = visor_read_int_callback,
235 };
236
237 /* device info for the Sony Clie OS version 3.5 */
238 static struct usb_serial_driver clie_3_5_device = {
239 .driver = {
240 .owner = THIS_MODULE,
241 .name = "clie_3.5",
242 },
243 .description = "Sony Clie 3.5",
244 .usb_driver = &visor_driver,
245 .id_table = clie_id_3_5_table,
246 .num_ports = 1,
247 .open = visor_open,
248 .close = visor_close,
249 .throttle = visor_throttle,
250 .unthrottle = visor_unthrottle,
251 .attach = clie_3_5_startup,
252 .write = visor_write,
253 .write_room = visor_write_room,
254 .write_bulk_callback = visor_write_bulk_callback,
255 .read_bulk_callback = visor_read_bulk_callback,
256 };
257
258 struct visor_private {
259 spinlock_t lock;
260 int bytes_in;
261 int bytes_out;
262 int outstanding_urbs;
263 unsigned char throttled;
264 unsigned char actually_throttled;
265 };
266
267 /* number of outstanding urbs to prevent userspace DoS from happening */
268 #define URB_UPPER_LIMIT 42
269
270 static int stats;
271
272 /******************************************************************************
273 * Handspring Visor specific driver functions
274 ******************************************************************************/
275 static int visor_open(struct tty_struct *tty, struct usb_serial_port *port)
276 {
277 struct usb_serial *serial = port->serial;
278 struct visor_private *priv = usb_get_serial_port_data(port);
279 unsigned long flags;
280 int result = 0;
281
282 dbg("%s - port %d", __func__, port->number);
283
284 if (!port->read_urb) {
285 /* this is needed for some brain dead Sony devices */
286 dev_err(&port->dev, "Device lied about number of ports, please use a lower one.\n");
287 return -ENODEV;
288 }
289
290 spin_lock_irqsave(&priv->lock, flags);
291 priv->bytes_in = 0;
292 priv->bytes_out = 0;
293 priv->throttled = 0;
294 spin_unlock_irqrestore(&priv->lock, flags);
295
296 /* Start reading from the device */
297 usb_fill_bulk_urb(port->read_urb, serial->dev,
298 usb_rcvbulkpipe(serial->dev,
299 port->bulk_in_endpointAddress),
300 port->read_urb->transfer_buffer,
301 port->read_urb->transfer_buffer_length,
302 visor_read_bulk_callback, port);
303 result = usb_submit_urb(port->read_urb, GFP_KERNEL);
304 if (result) {
305 dev_err(&port->dev,
306 "%s - failed submitting read urb, error %d\n",
307 __func__, result);
308 goto exit;
309 }
310
311 if (port->interrupt_in_urb) {
312 dbg("%s - adding interrupt input for treo", __func__);
313 result = usb_submit_urb(port->interrupt_in_urb, GFP_KERNEL);
314 if (result)
315 dev_err(&port->dev,
316 "%s - failed submitting interrupt urb, error %d\n",
317 __func__, result);
318 }
319 exit:
320 return result;
321 }
322
323
324 static void visor_close(struct usb_serial_port *port)
325 {
326 struct visor_private *priv = usb_get_serial_port_data(port);
327 unsigned char *transfer_buffer;
328
329 dbg("%s - port %d", __func__, port->number);
330
331 /* shutdown our urbs */
332 usb_kill_urb(port->read_urb);
333 usb_kill_urb(port->interrupt_in_urb);
334
335 mutex_lock(&port->serial->disc_mutex);
336 if (!port->serial->disconnected) {
337 /* Try to send shutdown message, unless the device is gone */
338 transfer_buffer = kmalloc(0x12, GFP_KERNEL);
339 if (transfer_buffer) {
340 usb_control_msg(port->serial->dev,
341 usb_rcvctrlpipe(port->serial->dev, 0),
342 VISOR_CLOSE_NOTIFICATION, 0xc2,
343 0x0000, 0x0000,
344 transfer_buffer, 0x12, 300);
345 kfree(transfer_buffer);
346 }
347 }
348 mutex_unlock(&port->serial->disc_mutex);
349
350 if (stats)
351 dev_info(&port->dev, "Bytes In = %d Bytes Out = %d\n",
352 priv->bytes_in, priv->bytes_out);
353 }
354
355
356 static int visor_write(struct tty_struct *tty, struct usb_serial_port *port,
357 const unsigned char *buf, int count)
358 {
359 struct visor_private *priv = usb_get_serial_port_data(port);
360 struct usb_serial *serial = port->serial;
361 struct urb *urb;
362 unsigned char *buffer;
363 unsigned long flags;
364 int status;
365
366 dbg("%s - port %d", __func__, port->number);
367
368 spin_lock_irqsave(&priv->lock, flags);
369 if (priv->outstanding_urbs > URB_UPPER_LIMIT) {
370 spin_unlock_irqrestore(&priv->lock, flags);
371 dbg("%s - write limit hit\n", __func__);
372 return 0;
373 }
374 priv->outstanding_urbs++;
375 spin_unlock_irqrestore(&priv->lock, flags);
376
377 buffer = kmalloc(count, GFP_ATOMIC);
378 if (!buffer) {
379 dev_err(&port->dev, "out of memory\n");
380 count = -ENOMEM;
381 goto error_no_buffer;
382 }
383
384 urb = usb_alloc_urb(0, GFP_ATOMIC);
385 if (!urb) {
386 dev_err(&port->dev, "no more free urbs\n");
387 count = -ENOMEM;
388 goto error_no_urb;
389 }
390
391 memcpy(buffer, buf, count);
392
393 usb_serial_debug_data(debug, &port->dev, __func__, count, buffer);
394
395 usb_fill_bulk_urb(urb, serial->dev,
396 usb_sndbulkpipe(serial->dev,
397 port->bulk_out_endpointAddress),
398 buffer, count,
399 visor_write_bulk_callback, port);
400
401 /* send it down the pipe */
402 status = usb_submit_urb(urb, GFP_ATOMIC);
403 if (status) {
404 dev_err(&port->dev,
405 "%s - usb_submit_urb(write bulk) failed with status = %d\n",
406 __func__, status);
407 count = status;
408 goto error;
409 } else {
410 spin_lock_irqsave(&priv->lock, flags);
411 priv->bytes_out += count;
412 spin_unlock_irqrestore(&priv->lock, flags);
413 }
414
415 /* we are done with this urb, so let the host driver
416 * really free it when it is finished with it */
417 usb_free_urb(urb);
418
419 return count;
420 error:
421 usb_free_urb(urb);
422 error_no_urb:
423 kfree(buffer);
424 error_no_buffer:
425 spin_lock_irqsave(&priv->lock, flags);
426 --priv->outstanding_urbs;
427 spin_unlock_irqrestore(&priv->lock, flags);
428 return count;
429 }
430
431
432 static int visor_write_room(struct tty_struct *tty)
433 {
434 struct usb_serial_port *port = tty->driver_data;
435 struct visor_private *priv = usb_get_serial_port_data(port);
436 unsigned long flags;
437
438 dbg("%s - port %d", __func__, port->number);
439
440 /*
441 * We really can take anything the user throws at us
442 * but let's pick a nice big number to tell the tty
443 * layer that we have lots of free space, unless we don't.
444 */
445
446 spin_lock_irqsave(&priv->lock, flags);
447 if (priv->outstanding_urbs > URB_UPPER_LIMIT * 2 / 3) {
448 spin_unlock_irqrestore(&priv->lock, flags);
449 dbg("%s - write limit hit\n", __func__);
450 return 0;
451 }
452 spin_unlock_irqrestore(&priv->lock, flags);
453
454 return 2048;
455 }
456
457
458 static void visor_write_bulk_callback(struct urb *urb)
459 {
460 struct usb_serial_port *port = urb->context;
461 struct visor_private *priv = usb_get_serial_port_data(port);
462 int status = urb->status;
463 unsigned long flags;
464
465 /* free up the transfer buffer, as usb_free_urb() does not do this */
466 kfree(urb->transfer_buffer);
467
468 dbg("%s - port %d", __func__, port->number);
469
470 if (status)
471 dbg("%s - nonzero write bulk status received: %d",
472 __func__, status);
473
474 spin_lock_irqsave(&priv->lock, flags);
475 --priv->outstanding_urbs;
476 spin_unlock_irqrestore(&priv->lock, flags);
477
478 usb_serial_port_softint(port);
479 }
480
481
482 static void visor_read_bulk_callback(struct urb *urb)
483 {
484 struct usb_serial_port *port = urb->context;
485 struct visor_private *priv = usb_get_serial_port_data(port);
486 unsigned char *data = urb->transfer_buffer;
487 int status = urb->status;
488 struct tty_struct *tty;
489 int result;
490 int available_room = 0;
491
492 dbg("%s - port %d", __func__, port->number);
493
494 if (status) {
495 dbg("%s - nonzero read bulk status received: %d",
496 __func__, status);
497 return;
498 }
499
500 usb_serial_debug_data(debug, &port->dev, __func__,
501 urb->actual_length, data);
502
503 if (urb->actual_length) {
504 tty = tty_port_tty_get(&port->port);
505 if (tty) {
506 available_room = tty_buffer_request_room(tty,
507 urb->actual_length);
508 if (available_room) {
509 tty_insert_flip_string(tty, data,
510 available_room);
511 tty_flip_buffer_push(tty);
512 }
513 tty_kref_put(tty);
514 }
515 spin_lock(&priv->lock);
516 priv->bytes_in += available_room;
517
518 } else {
519 spin_lock(&priv->lock);
520 }
521
522 /* Continue trying to always read if we should */
523 if (!priv->throttled) {
524 usb_fill_bulk_urb(port->read_urb, port->serial->dev,
525 usb_rcvbulkpipe(port->serial->dev,
526 port->bulk_in_endpointAddress),
527 port->read_urb->transfer_buffer,
528 port->read_urb->transfer_buffer_length,
529 visor_read_bulk_callback, port);
530 result = usb_submit_urb(port->read_urb, GFP_ATOMIC);
531 if (result)
532 dev_err(&port->dev,
533 "%s - failed resubmitting read urb, error %d\n",
534 __func__, result);
535 } else
536 priv->actually_throttled = 1;
537 spin_unlock(&priv->lock);
538 }
539
540 static void visor_read_int_callback(struct urb *urb)
541 {
542 struct usb_serial_port *port = urb->context;
543 int status = urb->status;
544 int result;
545
546 switch (status) {
547 case 0:
548 /* success */
549 break;
550 case -ECONNRESET:
551 case -ENOENT:
552 case -ESHUTDOWN:
553 /* this urb is terminated, clean up */
554 dbg("%s - urb shutting down with status: %d",
555 __func__, status);
556 return;
557 default:
558 dbg("%s - nonzero urb status received: %d",
559 __func__, status);
560 goto exit;
561 }
562
563 /*
564 * This information is still unknown what it can be used for.
565 * If anyone has an idea, please let the author know...
566 *
567 * Rumor has it this endpoint is used to notify when data
568 * is ready to be read from the bulk ones.
569 */
570 usb_serial_debug_data(debug, &port->dev, __func__,
571 urb->actual_length, urb->transfer_buffer);
572
573 exit:
574 result = usb_submit_urb(urb, GFP_ATOMIC);
575 if (result)
576 dev_err(&urb->dev->dev,
577 "%s - Error %d submitting interrupt urb\n",
578 __func__, result);
579 }
580
581 static void visor_throttle(struct tty_struct *tty)
582 {
583 struct usb_serial_port *port = tty->driver_data;
584 struct visor_private *priv = usb_get_serial_port_data(port);
585 unsigned long flags;
586
587 dbg("%s - port %d", __func__, port->number);
588 spin_lock_irqsave(&priv->lock, flags);
589 priv->throttled = 1;
590 spin_unlock_irqrestore(&priv->lock, flags);
591 }
592
593
594 static void visor_unthrottle(struct tty_struct *tty)
595 {
596 struct usb_serial_port *port = tty->driver_data;
597 struct visor_private *priv = usb_get_serial_port_data(port);
598 unsigned long flags;
599 int result;
600
601 dbg("%s - port %d", __func__, port->number);
602 spin_lock_irqsave(&priv->lock, flags);
603 priv->throttled = 0;
604 priv->actually_throttled = 0;
605 spin_unlock_irqrestore(&priv->lock, flags);
606
607 port->read_urb->dev = port->serial->dev;
608 result = usb_submit_urb(port->read_urb, GFP_ATOMIC);
609 if (result)
610 dev_err(&port->dev,
611 "%s - failed submitting read urb, error %d\n",
612 __func__, result);
613 }
614
615 static int palm_os_3_probe(struct usb_serial *serial,
616 const struct usb_device_id *id)
617 {
618 struct device *dev = &serial->dev->dev;
619 struct visor_connection_info *connection_info;
620 unsigned char *transfer_buffer;
621 char *string;
622 int retval = 0;
623 int i;
624 int num_ports = 0;
625
626 dbg("%s", __func__);
627
628 transfer_buffer = kmalloc(sizeof(*connection_info), GFP_KERNEL);
629 if (!transfer_buffer) {
630 dev_err(dev, "%s - kmalloc(%Zd) failed.\n", __func__,
631 sizeof(*connection_info));
632 return -ENOMEM;
633 }
634
635 /* send a get connection info request */
636 retval = usb_control_msg(serial->dev,
637 usb_rcvctrlpipe(serial->dev, 0),
638 VISOR_GET_CONNECTION_INFORMATION,
639 0xc2, 0x0000, 0x0000, transfer_buffer,
640 sizeof(*connection_info), 300);
641 if (retval < 0) {
642 dev_err(dev, "%s - error %d getting connection information\n",
643 __func__, retval);
644 goto exit;
645 }
646
647 if (retval == sizeof(*connection_info)) {
648 connection_info = (struct visor_connection_info *)
649 transfer_buffer;
650
651 num_ports = le16_to_cpu(connection_info->num_ports);
652 for (i = 0; i < num_ports; ++i) {
653 switch (
654 connection_info->connections[i].port_function_id) {
655 case VISOR_FUNCTION_GENERIC:
656 string = "Generic";
657 break;
658 case VISOR_FUNCTION_DEBUGGER:
659 string = "Debugger";
660 break;
661 case VISOR_FUNCTION_HOTSYNC:
662 string = "HotSync";
663 break;
664 case VISOR_FUNCTION_CONSOLE:
665 string = "Console";
666 break;
667 case VISOR_FUNCTION_REMOTE_FILE_SYS:
668 string = "Remote File System";
669 break;
670 default:
671 string = "unknown";
672 break;
673 }
674 dev_info(dev, "%s: port %d, is for %s use\n",
675 serial->type->description,
676 connection_info->connections[i].port, string);
677 }
678 }
679 /*
680 * Handle devices that report invalid stuff here.
681 */
682 if (num_ports == 0 || num_ports > 2) {
683 dev_warn(dev, "%s: No valid connect info available\n",
684 serial->type->description);
685 num_ports = 2;
686 }
687
688 dev_info(dev, "%s: Number of ports: %d\n", serial->type->description,
689 num_ports);
690
691 /*
692 * save off our num_ports info so that we can use it in the
693 * calc_num_ports callback
694 */
695 usb_set_serial_data(serial, (void *)(long)num_ports);
696
697 /* ask for the number of bytes available, but ignore the
698 response as it is broken */
699 retval = usb_control_msg(serial->dev,
700 usb_rcvctrlpipe(serial->dev, 0),
701 VISOR_REQUEST_BYTES_AVAILABLE,
702 0xc2, 0x0000, 0x0005, transfer_buffer,
703 0x02, 300);
704 if (retval < 0)
705 dev_err(dev, "%s - error %d getting bytes available request\n",
706 __func__, retval);
707 retval = 0;
708
709 exit:
710 kfree(transfer_buffer);
711
712 return retval;
713 }
714
715 static int palm_os_4_probe(struct usb_serial *serial,
716 const struct usb_device_id *id)
717 {
718 struct device *dev = &serial->dev->dev;
719 struct palm_ext_connection_info *connection_info;
720 unsigned char *transfer_buffer;
721 int retval;
722
723 dbg("%s", __func__);
724
725 transfer_buffer = kmalloc(sizeof(*connection_info), GFP_KERNEL);
726 if (!transfer_buffer) {
727 dev_err(dev, "%s - kmalloc(%Zd) failed.\n", __func__,
728 sizeof(*connection_info));
729 return -ENOMEM;
730 }
731
732 retval = usb_control_msg(serial->dev,
733 usb_rcvctrlpipe(serial->dev, 0),
734 PALM_GET_EXT_CONNECTION_INFORMATION,
735 0xc2, 0x0000, 0x0000, transfer_buffer,
736 sizeof(*connection_info), 300);
737 if (retval < 0)
738 dev_err(dev, "%s - error %d getting connection info\n",
739 __func__, retval);
740 else
741 usb_serial_debug_data(debug, &serial->dev->dev, __func__,
742 retval, transfer_buffer);
743
744 kfree(transfer_buffer);
745 return 0;
746 }
747
748
749 static int visor_probe(struct usb_serial *serial,
750 const struct usb_device_id *id)
751 {
752 int retval = 0;
753 int (*startup)(struct usb_serial *serial,
754 const struct usb_device_id *id);
755
756 dbg("%s", __func__);
757
758 if (serial->dev->actconfig->desc.bConfigurationValue != 1) {
759 dev_err(&serial->dev->dev, "active config #%d != 1 ??\n",
760 serial->dev->actconfig->desc.bConfigurationValue);
761 return -ENODEV;
762 }
763
764 if (id->driver_info) {
765 startup = (void *)id->driver_info;
766 retval = startup(serial, id);
767 }
768
769 return retval;
770 }
771
772 static int visor_calc_num_ports(struct usb_serial *serial)
773 {
774 int num_ports = (int)(long)(usb_get_serial_data(serial));
775
776 if (num_ports)
777 usb_set_serial_data(serial, NULL);
778
779 return num_ports;
780 }
781
782 static int generic_startup(struct usb_serial *serial)
783 {
784 struct usb_serial_port **ports = serial->port;
785 struct visor_private *priv;
786 int i;
787
788 for (i = 0; i < serial->num_ports; ++i) {
789 priv = kzalloc(sizeof(*priv), GFP_KERNEL);
790 if (!priv) {
791 while (i-- != 0) {
792 priv = usb_get_serial_port_data(ports[i]);
793 usb_set_serial_port_data(ports[i], NULL);
794 kfree(priv);
795 }
796 return -ENOMEM;
797 }
798 spin_lock_init(&priv->lock);
799 usb_set_serial_port_data(ports[i], priv);
800 }
801 return 0;
802 }
803
804 static int clie_3_5_startup(struct usb_serial *serial)
805 {
806 struct device *dev = &serial->dev->dev;
807 int result;
808 u8 data;
809
810 dbg("%s", __func__);
811
812 /*
813 * Note that PEG-300 series devices expect the following two calls.
814 */
815
816 /* get the config number */
817 result = usb_control_msg(serial->dev, usb_rcvctrlpipe(serial->dev, 0),
818 USB_REQ_GET_CONFIGURATION, USB_DIR_IN,
819 0, 0, &data, 1, 3000);
820 if (result < 0) {
821 dev_err(dev, "%s: get config number failed: %d\n",
822 __func__, result);
823 return result;
824 }
825 if (result != 1) {
826 dev_err(dev, "%s: get config number bad return length: %d\n",
827 __func__, result);
828 return -EIO;
829 }
830
831 /* get the interface number */
832 result = usb_control_msg(serial->dev, usb_rcvctrlpipe(serial->dev, 0),
833 USB_REQ_GET_INTERFACE,
834 USB_DIR_IN | USB_RECIP_INTERFACE,
835 0, 0, &data, 1, 3000);
836 if (result < 0) {
837 dev_err(dev, "%s: get interface number failed: %d\n",
838 __func__, result);
839 return result;
840 }
841 if (result != 1) {
842 dev_err(dev,
843 "%s: get interface number bad return length: %d\n",
844 __func__, result);
845 return -EIO;
846 }
847
848 return generic_startup(serial);
849 }
850
851 static int treo_attach(struct usb_serial *serial)
852 {
853 struct usb_serial_port *swap_port;
854
855 /* Only do this endpoint hack for the Handspring devices with
856 * interrupt in endpoints, which for now are the Treo devices. */
857 if (!((le16_to_cpu(serial->dev->descriptor.idVendor)
858 == HANDSPRING_VENDOR_ID) ||
859 (le16_to_cpu(serial->dev->descriptor.idVendor)
860 == KYOCERA_VENDOR_ID)) ||
861 (serial->num_interrupt_in == 0))
862 goto generic_startup;
863
864 dbg("%s", __func__);
865
866 /*
867 * It appears that Treos and Kyoceras want to use the
868 * 1st bulk in endpoint to communicate with the 2nd bulk out endpoint,
869 * so let's swap the 1st and 2nd bulk in and interrupt endpoints.
870 * Note that swapping the bulk out endpoints would break lots of
871 * apps that want to communicate on the second port.
872 */
873 #define COPY_PORT(dest, src) \
874 do { \
875 dest->read_urb = src->read_urb; \
876 dest->bulk_in_endpointAddress = src->bulk_in_endpointAddress;\
877 dest->bulk_in_buffer = src->bulk_in_buffer; \
878 dest->interrupt_in_urb = src->interrupt_in_urb; \
879 dest->interrupt_in_endpointAddress = \
880 src->interrupt_in_endpointAddress;\
881 dest->interrupt_in_buffer = src->interrupt_in_buffer; \
882 } while (0);
883
884 swap_port = kmalloc(sizeof(*swap_port), GFP_KERNEL);
885 if (!swap_port)
886 return -ENOMEM;
887 COPY_PORT(swap_port, serial->port[0]);
888 COPY_PORT(serial->port[0], serial->port[1]);
889 COPY_PORT(serial->port[1], swap_port);
890 kfree(swap_port);
891
892 generic_startup:
893 return generic_startup(serial);
894 }
895
896 static int clie_5_attach(struct usb_serial *serial)
897 {
898 dbg("%s", __func__);
899
900 /* TH55 registers 2 ports.
901 Communication in from the UX50/TH55 uses bulk_in_endpointAddress
902 from port 0. Communication out to the UX50/TH55 uses
903 bulk_out_endpointAddress from port 1
904
905 Lets do a quick and dirty mapping
906 */
907
908 /* some sanity check */
909 if (serial->num_ports < 2)
910 return -1;
911
912 /* port 0 now uses the modified endpoint Address */
913 serial->port[0]->bulk_out_endpointAddress =
914 serial->port[1]->bulk_out_endpointAddress;
915
916 return generic_startup(serial);
917 }
918
919 static void visor_release(struct usb_serial *serial)
920 {
921 struct visor_private *priv;
922 int i;
923
924 dbg("%s", __func__);
925
926 for (i = 0; i < serial->num_ports; i++) {
927 priv = usb_get_serial_port_data(serial->port[i]);
928 kfree(priv);
929 }
930 }
931
932 static int __init visor_init(void)
933 {
934 int i, retval;
935 /* Only if parameters were passed to us */
936 if (vendor > 0 && product > 0) {
937 struct usb_device_id usb_dev_temp[] = {
938 {
939 USB_DEVICE(vendor, product),
940 .driver_info =
941 (kernel_ulong_t) &palm_os_4_probe
942 }
943 };
944
945 /* Find the last entry in id_table */
946 for (i = 0;; i++) {
947 if (id_table[i].idVendor == 0) {
948 id_table[i] = usb_dev_temp[0];
949 break;
950 }
951 }
952 /* Find the last entry in id_table_combined */
953 for (i = 0;; i++) {
954 if (id_table_combined[i].idVendor == 0) {
955 id_table_combined[i] = usb_dev_temp[0];
956 break;
957 }
958 }
959 printk(KERN_INFO KBUILD_MODNAME
960 ": Untested USB device specified at time of module insertion\n");
961 printk(KERN_INFO KBUILD_MODNAME
962 ": Warning: This is not guaranteed to work\n");
963 printk(KERN_INFO KBUILD_MODNAME
964 ": Using a newer kernel is preferred to this method\n");
965 printk(KERN_INFO KBUILD_MODNAME
966 ": Adding Palm OS protocol 4.x support for unknown device: 0x%x/0x%x\n",
967 vendor, product);
968 }
969 retval = usb_serial_register(&handspring_device);
970 if (retval)
971 goto failed_handspring_register;
972 retval = usb_serial_register(&clie_3_5_device);
973 if (retval)
974 goto failed_clie_3_5_register;
975 retval = usb_serial_register(&clie_5_device);
976 if (retval)
977 goto failed_clie_5_register;
978 retval = usb_register(&visor_driver);
979 if (retval)
980 goto failed_usb_register;
981 printk(KERN_INFO KBUILD_MODNAME ": " DRIVER_DESC "\n");
982
983 return 0;
984 failed_usb_register:
985 usb_serial_deregister(&clie_5_device);
986 failed_clie_5_register:
987 usb_serial_deregister(&clie_3_5_device);
988 failed_clie_3_5_register:
989 usb_serial_deregister(&handspring_device);
990 failed_handspring_register:
991 return retval;
992 }
993
994
995 static void __exit visor_exit (void)
996 {
997 usb_deregister(&visor_driver);
998 usb_serial_deregister(&handspring_device);
999 usb_serial_deregister(&clie_3_5_device);
1000 usb_serial_deregister(&clie_5_device);
1001 }
1002
1003
1004 module_init(visor_init);
1005 module_exit(visor_exit);
1006
1007 MODULE_AUTHOR(DRIVER_AUTHOR);
1008 MODULE_DESCRIPTION(DRIVER_DESC);
1009 MODULE_LICENSE("GPL");
1010
1011 module_param(debug, bool, S_IRUGO | S_IWUSR);
1012 MODULE_PARM_DESC(debug, "Debug enabled or not");
1013 module_param(stats, bool, S_IRUGO | S_IWUSR);
1014 MODULE_PARM_DESC(stats, "Enables statistics or not");
1015
1016 module_param(vendor, ushort, 0);
1017 MODULE_PARM_DESC(vendor, "User specified vendor ID");
1018 module_param(product, ushort, 0);
1019 MODULE_PARM_DESC(product, "User specified product ID");
1020
x86 "subsystem" repository