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shmem: new export ops
[linux-2.6/linux-trees-mm.git] / drivers / usb / serial / visor.c
blob7ee087fed913fbeed34678caebbe15dc8a96567c
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 driver
13 *
14 */
15
16 #include <linux/kernel.h>
17 #include <linux/errno.h>
18 #include <linux/init.h>
19 #include <linux/slab.h>
20 #include <linux/tty.h>
21 #include <linux/tty_driver.h>
22 #include <linux/tty_flip.h>
23 #include <linux/module.h>
24 #include <linux/moduleparam.h>
25 #include <linux/spinlock.h>
26 #include <asm/uaccess.h>
27 #include <linux/usb.h>
28 #include <linux/usb/serial.h>
29 #include "visor.h"
30
31 /*
32 * Version Information
33 */
34 #define DRIVER_AUTHOR "Greg Kroah-Hartman <greg@kroah.com>"
35 #define DRIVER_DESC "USB HandSpring Visor / Palm OS driver"
36
37 /* function prototypes for a handspring visor */
38 static int visor_open (struct usb_serial_port *port, struct file *filp);
39 static void visor_close (struct usb_serial_port *port, struct file *filp);
40 static int visor_write (struct usb_serial_port *port, const unsigned char *buf, int count);
41 static int visor_write_room (struct usb_serial_port *port);
42 static int visor_chars_in_buffer (struct usb_serial_port *port);
43 static void visor_throttle (struct usb_serial_port *port);
44 static void visor_unthrottle (struct usb_serial_port *port);
45 static int visor_probe (struct usb_serial *serial, const struct usb_device_id *id);
46 static int visor_calc_num_ports(struct usb_serial *serial);
47 static void visor_shutdown (struct usb_serial *serial);
48 static int visor_ioctl (struct usb_serial_port *port, struct file * file, unsigned int cmd, unsigned long arg);
49 static void visor_write_bulk_callback (struct urb *urb);
50 static void visor_read_bulk_callback (struct urb *urb);
51 static void visor_read_int_callback (struct urb *urb);
52 static int clie_3_5_startup (struct usb_serial *serial);
53 static int treo_attach (struct usb_serial *serial);
54 static int clie_5_attach (struct usb_serial *serial);
55 static int palm_os_3_probe (struct usb_serial *serial, const struct usb_device_id *id);
56 static int palm_os_4_probe (struct usb_serial *serial, const struct usb_device_id *id);
57
58 /* Parameters that may be passed into the module. */
59 static int debug;
60 static __u16 vendor;
61 static __u16 product;
62
63 static struct usb_device_id id_table [] = {
64 { USB_DEVICE(HANDSPRING_VENDOR_ID, HANDSPRING_VISOR_ID),
65 .driver_info = (kernel_ulong_t)&palm_os_3_probe },
66 { USB_DEVICE(HANDSPRING_VENDOR_ID, HANDSPRING_TREO_ID),
67 .driver_info = (kernel_ulong_t)&palm_os_4_probe },
68 { USB_DEVICE(HANDSPRING_VENDOR_ID, HANDSPRING_TREO600_ID),
69 .driver_info = (kernel_ulong_t)&palm_os_4_probe },
70 { USB_DEVICE(GSPDA_VENDOR_ID, GSPDA_XPLORE_M68_ID),
71 .driver_info = (kernel_ulong_t)&palm_os_4_probe },
72 { USB_DEVICE(PALM_VENDOR_ID, PALM_M500_ID),
73 .driver_info = (kernel_ulong_t)&palm_os_4_probe },
74 { USB_DEVICE(PALM_VENDOR_ID, PALM_M505_ID),
75 .driver_info = (kernel_ulong_t)&palm_os_4_probe },
76 { USB_DEVICE(PALM_VENDOR_ID, PALM_M515_ID),
77 .driver_info = (kernel_ulong_t)&palm_os_4_probe },
78 { USB_DEVICE(PALM_VENDOR_ID, PALM_I705_ID),
79 .driver_info = (kernel_ulong_t)&palm_os_4_probe },
80 { USB_DEVICE(PALM_VENDOR_ID, PALM_M100_ID),
81 .driver_info = (kernel_ulong_t)&palm_os_4_probe },
82 { USB_DEVICE(PALM_VENDOR_ID, PALM_M125_ID),
83 .driver_info = (kernel_ulong_t)&palm_os_4_probe },
84 { USB_DEVICE(PALM_VENDOR_ID, PALM_M130_ID),
85 .driver_info = (kernel_ulong_t)&palm_os_4_probe },
86 { USB_DEVICE(PALM_VENDOR_ID, PALM_TUNGSTEN_T_ID),
87 .driver_info = (kernel_ulong_t)&palm_os_4_probe },
88 { USB_DEVICE(PALM_VENDOR_ID, PALM_TREO_650),
89 .driver_info = (kernel_ulong_t)&palm_os_4_probe },
90 { USB_DEVICE(PALM_VENDOR_ID, PALM_TUNGSTEN_Z_ID),
91 .driver_info = (kernel_ulong_t)&palm_os_4_probe },
92 { USB_DEVICE(PALM_VENDOR_ID, PALM_ZIRE_ID),
93 .driver_info = (kernel_ulong_t)&palm_os_4_probe },
94 { USB_DEVICE(SONY_VENDOR_ID, SONY_CLIE_4_0_ID),
95 .driver_info = (kernel_ulong_t)&palm_os_4_probe },
96 { USB_DEVICE(SONY_VENDOR_ID, SONY_CLIE_S360_ID),
97 .driver_info = (kernel_ulong_t)&palm_os_4_probe },
98 { USB_DEVICE(SONY_VENDOR_ID, SONY_CLIE_4_1_ID),
99 .driver_info = (kernel_ulong_t)&palm_os_4_probe },
100 { USB_DEVICE(SONY_VENDOR_ID, SONY_CLIE_NX60_ID),
101 .driver_info = (kernel_ulong_t)&palm_os_4_probe },
102 { USB_DEVICE(SONY_VENDOR_ID, SONY_CLIE_NZ90V_ID),
103 .driver_info = (kernel_ulong_t)&palm_os_4_probe },
104 { USB_DEVICE(SONY_VENDOR_ID, SONY_CLIE_TJ25_ID),
105 .driver_info = (kernel_ulong_t)&palm_os_4_probe },
106 { USB_DEVICE(ACER_VENDOR_ID, ACER_S10_ID),
107 .driver_info = (kernel_ulong_t)&palm_os_4_probe },
108 { USB_DEVICE(SAMSUNG_VENDOR_ID, SAMSUNG_SCH_I330_ID),
109 .driver_info = (kernel_ulong_t)&palm_os_4_probe },
110 { USB_DEVICE(SAMSUNG_VENDOR_ID, SAMSUNG_SPH_I500_ID),
111 .driver_info = (kernel_ulong_t)&palm_os_4_probe },
112 { USB_DEVICE(TAPWAVE_VENDOR_ID, TAPWAVE_ZODIAC_ID),
113 .driver_info = (kernel_ulong_t)&palm_os_4_probe },
114 { USB_DEVICE(GARMIN_VENDOR_ID, GARMIN_IQUE_3600_ID),
115 .driver_info = (kernel_ulong_t)&palm_os_4_probe },
116 { USB_DEVICE(ACEECA_VENDOR_ID, ACEECA_MEZ1000_ID),
117 .driver_info = (kernel_ulong_t)&palm_os_4_probe },
118 { USB_DEVICE(KYOCERA_VENDOR_ID, KYOCERA_7135_ID),
119 .driver_info = (kernel_ulong_t)&palm_os_4_probe },
120 { USB_DEVICE(FOSSIL_VENDOR_ID, FOSSIL_ABACUS_ID),
121 .driver_info = (kernel_ulong_t)&palm_os_4_probe },
122 { }, /* optional parameter entry */
123 { } /* Terminating entry */
124 };
125
126 static struct usb_device_id clie_id_5_table [] = {
127 { USB_DEVICE(SONY_VENDOR_ID, SONY_CLIE_UX50_ID),
128 .driver_info = (kernel_ulong_t)&palm_os_4_probe },
129 { }, /* optional parameter entry */
130 { } /* Terminating entry */
131 };
132
133 static struct usb_device_id clie_id_3_5_table [] = {
134 { USB_DEVICE(SONY_VENDOR_ID, SONY_CLIE_3_5_ID) },
135 { } /* Terminating entry */
136 };
137
138 static struct usb_device_id id_table_combined [] = {
139 { USB_DEVICE(HANDSPRING_VENDOR_ID, HANDSPRING_VISOR_ID) },
140 { USB_DEVICE(HANDSPRING_VENDOR_ID, HANDSPRING_TREO_ID) },
141 { USB_DEVICE(HANDSPRING_VENDOR_ID, HANDSPRING_TREO600_ID) },
142 { USB_DEVICE(GSPDA_VENDOR_ID, GSPDA_XPLORE_M68_ID) },
143 { USB_DEVICE(PALM_VENDOR_ID, PALM_M500_ID) },
144 { USB_DEVICE(PALM_VENDOR_ID, PALM_M505_ID) },
145 { USB_DEVICE(PALM_VENDOR_ID, PALM_M515_ID) },
146 { USB_DEVICE(PALM_VENDOR_ID, PALM_I705_ID) },
147 { USB_DEVICE(PALM_VENDOR_ID, PALM_M100_ID) },
148 { USB_DEVICE(PALM_VENDOR_ID, PALM_M125_ID) },
149 { USB_DEVICE(PALM_VENDOR_ID, PALM_M130_ID) },
150 { USB_DEVICE(PALM_VENDOR_ID, PALM_TUNGSTEN_T_ID) },
151 { USB_DEVICE(PALM_VENDOR_ID, PALM_TREO_650) },
152 { USB_DEVICE(PALM_VENDOR_ID, PALM_TUNGSTEN_Z_ID) },
153 { USB_DEVICE(PALM_VENDOR_ID, PALM_ZIRE_ID) },
154 { USB_DEVICE(SONY_VENDOR_ID, SONY_CLIE_3_5_ID) },
155 { USB_DEVICE(SONY_VENDOR_ID, SONY_CLIE_4_0_ID) },
156 { USB_DEVICE(SONY_VENDOR_ID, SONY_CLIE_S360_ID) },
157 { USB_DEVICE(SONY_VENDOR_ID, SONY_CLIE_4_1_ID) },
158 { USB_DEVICE(SONY_VENDOR_ID, SONY_CLIE_NX60_ID) },
159 { USB_DEVICE(SONY_VENDOR_ID, SONY_CLIE_NZ90V_ID) },
160 { USB_DEVICE(SONY_VENDOR_ID, SONY_CLIE_UX50_ID) },
161 { USB_DEVICE(SONY_VENDOR_ID, SONY_CLIE_TJ25_ID) },
162 { USB_DEVICE(SAMSUNG_VENDOR_ID, SAMSUNG_SCH_I330_ID) },
163 { USB_DEVICE(SAMSUNG_VENDOR_ID, SAMSUNG_SPH_I500_ID) },
164 { USB_DEVICE(TAPWAVE_VENDOR_ID, TAPWAVE_ZODIAC_ID) },
165 { USB_DEVICE(GARMIN_VENDOR_ID, GARMIN_IQUE_3600_ID) },
166 { USB_DEVICE(ACEECA_VENDOR_ID, ACEECA_MEZ1000_ID) },
167 { USB_DEVICE(KYOCERA_VENDOR_ID, KYOCERA_7135_ID) },
168 { USB_DEVICE(FOSSIL_VENDOR_ID, FOSSIL_ABACUS_ID) },
169 { }, /* optional parameter entry */
170 { } /* Terminating entry */
171 };
172
173 MODULE_DEVICE_TABLE (usb, id_table_combined);
174
175 static struct usb_driver visor_driver = {
176 .name = "visor",
177 .probe = usb_serial_probe,
178 .disconnect = usb_serial_disconnect,
179 .id_table = id_table_combined,
180 .no_dynamic_id = 1,
181 };
182
183 /* All of the device info needed for the Handspring Visor, and Palm 4.0 devices */
184 static struct usb_serial_driver handspring_device = {
185 .driver = {
186 .owner = THIS_MODULE,
187 .name = "visor",
188 },
189 .description = "Handspring Visor / Palm OS",
190 .usb_driver = &visor_driver,
191 .id_table = id_table,
192 .num_interrupt_in = NUM_DONT_CARE,
193 .num_bulk_in = 2,
194 .num_bulk_out = 2,
195 .num_ports = 2,
196 .open = visor_open,
197 .close = visor_close,
198 .throttle = visor_throttle,
199 .unthrottle = visor_unthrottle,
200 .attach = treo_attach,
201 .probe = visor_probe,
202 .calc_num_ports = visor_calc_num_ports,
203 .shutdown = visor_shutdown,
204 .ioctl = visor_ioctl,
205 .write = visor_write,
206 .write_room = visor_write_room,
207 .chars_in_buffer = visor_chars_in_buffer,
208 .write_bulk_callback = visor_write_bulk_callback,
209 .read_bulk_callback = visor_read_bulk_callback,
210 .read_int_callback = visor_read_int_callback,
211 };
212
213 /* All of the device info needed for the Clie UX50, TH55 Palm 5.0 devices */
214 static struct usb_serial_driver clie_5_device = {
215 .driver = {
216 .owner = THIS_MODULE,
217 .name = "clie_5",
218 },
219 .description = "Sony Clie 5.0",
220 .usb_driver = &visor_driver,
221 .id_table = clie_id_5_table,
222 .num_interrupt_in = NUM_DONT_CARE,
223 .num_bulk_in = 2,
224 .num_bulk_out = 2,
225 .num_ports = 2,
226 .open = visor_open,
227 .close = visor_close,
228 .throttle = visor_throttle,
229 .unthrottle = visor_unthrottle,
230 .attach = clie_5_attach,
231 .probe = visor_probe,
232 .calc_num_ports = visor_calc_num_ports,
233 .shutdown = visor_shutdown,
234 .ioctl = visor_ioctl,
235 .write = visor_write,
236 .write_room = visor_write_room,
237 .chars_in_buffer = visor_chars_in_buffer,
238 .write_bulk_callback = visor_write_bulk_callback,
239 .read_bulk_callback = visor_read_bulk_callback,
240 .read_int_callback = visor_read_int_callback,
241 };
242
243 /* device info for the Sony Clie OS version 3.5 */
244 static struct usb_serial_driver clie_3_5_device = {
245 .driver = {
246 .owner = THIS_MODULE,
247 .name = "clie_3.5",
248 },
249 .description = "Sony Clie 3.5",
250 .usb_driver = &visor_driver,
251 .id_table = clie_id_3_5_table,
252 .num_interrupt_in = 0,
253 .num_bulk_in = 1,
254 .num_bulk_out = 1,
255 .num_ports = 1,
256 .open = visor_open,
257 .close = visor_close,
258 .throttle = visor_throttle,
259 .unthrottle = visor_unthrottle,
260 .attach = clie_3_5_startup,
261 .ioctl = visor_ioctl,
262 .write = visor_write,
263 .write_room = visor_write_room,
264 .chars_in_buffer = visor_chars_in_buffer,
265 .write_bulk_callback = visor_write_bulk_callback,
266 .read_bulk_callback = visor_read_bulk_callback,
267 };
268
269 struct visor_private {
270 spinlock_t lock;
271 int bytes_in;
272 int bytes_out;
273 int outstanding_urbs;
274 unsigned char throttled;
275 unsigned char actually_throttled;
276 };
277
278 /* number of outstanding urbs to prevent userspace DoS from happening */
279 #define URB_UPPER_LIMIT 42
280
281 static int stats;
282
283 /******************************************************************************
284 * Handspring Visor specific driver functions
285 ******************************************************************************/
286 static int visor_open (struct usb_serial_port *port, struct file *filp)
287 {
288 struct usb_serial *serial = port->serial;
289 struct visor_private *priv = usb_get_serial_port_data(port);
290 unsigned long flags;
291 int result = 0;
292
293 dbg("%s - port %d", __FUNCTION__, port->number);
294
295 if (!port->read_urb) {
296 /* this is needed for some brain dead Sony devices */
297 dev_err(&port->dev, "Device lied about number of ports, please use a lower one.\n");
298 return -ENODEV;
299 }
300
301 spin_lock_irqsave(&priv->lock, flags);
302 priv->bytes_in = 0;
303 priv->bytes_out = 0;
304 priv->throttled = 0;
305 spin_unlock_irqrestore(&priv->lock, flags);
306
307 /*
308 * Force low_latency on so that our tty_push actually forces the data
309 * through, otherwise it is scheduled, and with high data rates (like
310 * with OHCI) data can get lost.
311 */
312 if (port->tty)
313 port->tty->low_latency = 1;
314
315 /* Start reading from the device */
316 usb_fill_bulk_urb (port->read_urb, serial->dev,
317 usb_rcvbulkpipe (serial->dev,
318 port->bulk_in_endpointAddress),
319 port->read_urb->transfer_buffer,
320 port->read_urb->transfer_buffer_length,
321 visor_read_bulk_callback, port);
322 result = usb_submit_urb(port->read_urb, GFP_KERNEL);
323 if (result) {
324 dev_err(&port->dev, "%s - failed submitting read urb, error %d\n",
325 __FUNCTION__, result);
326 goto exit;
327 }
328
329 if (port->interrupt_in_urb) {
330 dbg("%s - adding interrupt input for treo", __FUNCTION__);
331 result = usb_submit_urb(port->interrupt_in_urb, GFP_KERNEL);
332 if (result)
333 dev_err(&port->dev, "%s - failed submitting interrupt urb, error %d\n",
334 __FUNCTION__, result);
335 }
336 exit:
337 return result;
338 }
339
340
341 static void visor_close (struct usb_serial_port *port, struct file * filp)
342 {
343 struct visor_private *priv = usb_get_serial_port_data(port);
344 unsigned char *transfer_buffer;
345
346 dbg("%s - port %d", __FUNCTION__, port->number);
347
348 /* shutdown our urbs */
349 usb_kill_urb(port->read_urb);
350 usb_kill_urb(port->interrupt_in_urb);
351
352 /* Try to send shutdown message, if the device is gone, this will just fail. */
353 transfer_buffer = kmalloc (0x12, GFP_KERNEL);
354 if (transfer_buffer) {
355 usb_control_msg (port->serial->dev,
356 usb_rcvctrlpipe(port->serial->dev, 0),
357 VISOR_CLOSE_NOTIFICATION, 0xc2,
358 0x0000, 0x0000,
359 transfer_buffer, 0x12, 300);
360 kfree (transfer_buffer);
361 }
362
363 if (stats)
364 dev_info(&port->dev, "Bytes In = %d Bytes Out = %d\n",
365 priv->bytes_in, priv->bytes_out);
366 }
367
368
369 static int visor_write (struct usb_serial_port *port, const unsigned char *buf, int count)
370 {
371 struct visor_private *priv = usb_get_serial_port_data(port);
372 struct usb_serial *serial = port->serial;
373 struct urb *urb;
374 unsigned char *buffer;
375 unsigned long flags;
376 int status;
377
378 dbg("%s - port %d", __FUNCTION__, port->number);
379
380 spin_lock_irqsave(&priv->lock, flags);
381 if (priv->outstanding_urbs > URB_UPPER_LIMIT) {
382 spin_unlock_irqrestore(&priv->lock, flags);
383 dbg("%s - write limit hit\n", __FUNCTION__);
384 return 0;
385 }
386 priv->outstanding_urbs++;
387 spin_unlock_irqrestore(&priv->lock, flags);
388
389 buffer = kmalloc (count, GFP_ATOMIC);
390 if (!buffer) {
391 dev_err(&port->dev, "out of memory\n");
392 count = -ENOMEM;
393 goto error_no_buffer;
394 }
395
396 urb = usb_alloc_urb(0, GFP_ATOMIC);
397 if (!urb) {
398 dev_err(&port->dev, "no more free urbs\n");
399 count = -ENOMEM;
400 goto error_no_urb;
401 }
402
403 memcpy (buffer, buf, count);
404
405 usb_serial_debug_data(debug, &port->dev, __FUNCTION__, count, buffer);
406
407 usb_fill_bulk_urb (urb, serial->dev,
408 usb_sndbulkpipe (serial->dev,
409 port->bulk_out_endpointAddress),
410 buffer, count,
411 visor_write_bulk_callback, port);
412
413 /* send it down the pipe */
414 status = usb_submit_urb(urb, GFP_ATOMIC);
415 if (status) {
416 dev_err(&port->dev, "%s - usb_submit_urb(write bulk) failed with status = %d\n",
417 __FUNCTION__, status);
418 count = status;
419 goto error;
420 } else {
421 spin_lock_irqsave(&priv->lock, flags);
422 priv->bytes_out += count;
423 spin_unlock_irqrestore(&priv->lock, flags);
424 }
425
426 /* we are done with this urb, so let the host driver
427 * really free it when it is finished with it */
428 usb_free_urb(urb);
429
430 return count;
431 error:
432 usb_free_urb(urb);
433 error_no_urb:
434 kfree(buffer);
435 error_no_buffer:
436 spin_lock_irqsave(&priv->lock, flags);
437 --priv->outstanding_urbs;
438 spin_unlock_irqrestore(&priv->lock, flags);
439 return count;
440 }
441
442
443 static int visor_write_room (struct usb_serial_port *port)
444 {
445 struct visor_private *priv = usb_get_serial_port_data(port);
446 unsigned long flags;
447
448 dbg("%s - port %d", __FUNCTION__, port->number);
449
450 /*
451 * We really can take anything the user throws at us
452 * but let's pick a nice big number to tell the tty
453 * layer that we have lots of free space, unless we don't.
454 */
455
456 spin_lock_irqsave(&priv->lock, flags);
457 if (priv->outstanding_urbs > URB_UPPER_LIMIT * 2 / 3) {
458 spin_unlock_irqrestore(&priv->lock, flags);
459 dbg("%s - write limit hit\n", __FUNCTION__);
460 return 0;
461 }
462 spin_unlock_irqrestore(&priv->lock, flags);
463
464 return 2048;
465 }
466
467
468 static int visor_chars_in_buffer (struct usb_serial_port *port)
469 {
470 dbg("%s - port %d", __FUNCTION__, port->number);
471
472 /*
473 * We can't really account for how much data we
474 * have sent out, but hasn't made it through to the
475 * device, so just tell the tty layer that everything
476 * is flushed.
477 */
478 return 0;
479 }
480
481
482 static void visor_write_bulk_callback (struct urb *urb)
483 {
484 struct usb_serial_port *port = (struct usb_serial_port *)urb->context;
485 struct visor_private *priv = usb_get_serial_port_data(port);
486 int status = urb->status;
487 unsigned long flags;
488
489 /* free up the transfer buffer, as usb_free_urb() does not do this */
490 kfree (urb->transfer_buffer);
491
492 dbg("%s - port %d", __FUNCTION__, port->number);
493
494 if (status)
495 dbg("%s - nonzero write bulk status received: %d",
496 __FUNCTION__, status);
497
498 spin_lock_irqsave(&priv->lock, flags);
499 --priv->outstanding_urbs;
500 spin_unlock_irqrestore(&priv->lock, flags);
501
502 usb_serial_port_softint(port);
503 }
504
505
506 static void visor_read_bulk_callback (struct urb *urb)
507 {
508 struct usb_serial_port *port = (struct usb_serial_port *)urb->context;
509 struct visor_private *priv = usb_get_serial_port_data(port);
510 unsigned char *data = urb->transfer_buffer;
511 int status = urb->status;
512 struct tty_struct *tty;
513 int result;
514 int available_room;
515
516 dbg("%s - port %d", __FUNCTION__, port->number);
517
518 if (status) {
519 dbg("%s - nonzero read bulk status received: %d",
520 __FUNCTION__, status);
521 return;
522 }
523
524 usb_serial_debug_data(debug, &port->dev, __FUNCTION__, urb->actual_length, data);
525
526 tty = port->tty;
527 if (tty && urb->actual_length) {
528 available_room = tty_buffer_request_room(tty, urb->actual_length);
529 if (available_room) {
530 tty_insert_flip_string(tty, data, available_room);
531 tty_flip_buffer_push(tty);
532 }
533 spin_lock(&priv->lock);
534 priv->bytes_in += available_room;
535
536 } else {
537 spin_lock(&priv->lock);
538 }
539
540 /* Continue trying to always read if we should */
541 if (!priv->throttled) {
542 usb_fill_bulk_urb (port->read_urb, port->serial->dev,
543 usb_rcvbulkpipe(port->serial->dev,
544 port->bulk_in_endpointAddress),
545 port->read_urb->transfer_buffer,
546 port->read_urb->transfer_buffer_length,
547 visor_read_bulk_callback, port);
548 result = usb_submit_urb(port->read_urb, GFP_ATOMIC);
549 if (result)
550 dev_err(&port->dev, "%s - failed resubmitting read urb, error %d\n", __FUNCTION__, result);
551 } else {
552 priv->actually_throttled = 1;
553 }
554 spin_unlock(&priv->lock);
555 }
556
557 static void visor_read_int_callback (struct urb *urb)
558 {
559 struct usb_serial_port *port = (struct usb_serial_port *)urb->context;
560 int status = urb->status;
561 int result;
562
563 switch (status) {
564 case 0:
565 /* success */
566 break;
567 case -ECONNRESET:
568 case -ENOENT:
569 case -ESHUTDOWN:
570 /* this urb is terminated, clean up */
571 dbg("%s - urb shutting down with status: %d",
572 __FUNCTION__, status);
573 return;
574 default:
575 dbg("%s - nonzero urb status received: %d",
576 __FUNCTION__, status);
577 goto exit;
578 }
579
580 /*
581 * This information is still unknown what it can be used for.
582 * If anyone has an idea, please let the author know...
583 *
584 * Rumor has it this endpoint is used to notify when data
585 * is ready to be read from the bulk ones.
586 */
587 usb_serial_debug_data(debug, &port->dev, __FUNCTION__,
588 urb->actual_length, urb->transfer_buffer);
589
590 exit:
591 result = usb_submit_urb (urb, GFP_ATOMIC);
592 if (result)
593 dev_err(&urb->dev->dev, "%s - Error %d submitting interrupt urb\n",
594 __FUNCTION__, result);
595 }
596
597 static void visor_throttle (struct usb_serial_port *port)
598 {
599 struct visor_private *priv = usb_get_serial_port_data(port);
600 unsigned long flags;
601
602 dbg("%s - port %d", __FUNCTION__, port->number);
603 spin_lock_irqsave(&priv->lock, flags);
604 priv->throttled = 1;
605 spin_unlock_irqrestore(&priv->lock, flags);
606 }
607
608
609 static void visor_unthrottle (struct usb_serial_port *port)
610 {
611 struct visor_private *priv = usb_get_serial_port_data(port);
612 unsigned long flags;
613 int result;
614
615 dbg("%s - port %d", __FUNCTION__, port->number);
616 spin_lock_irqsave(&priv->lock, flags);
617 priv->throttled = 0;
618 priv->actually_throttled = 0;
619 spin_unlock_irqrestore(&priv->lock, flags);
620
621 port->read_urb->dev = port->serial->dev;
622 result = usb_submit_urb(port->read_urb, GFP_ATOMIC);
623 if (result)
624 dev_err(&port->dev, "%s - failed submitting read urb, error %d\n", __FUNCTION__, result);
625 }
626
627 static int palm_os_3_probe (struct usb_serial *serial, const struct usb_device_id *id)
628 {
629 struct device *dev = &serial->dev->dev;
630 struct visor_connection_info *connection_info;
631 unsigned char *transfer_buffer;
632 char *string;
633 int retval = 0;
634 int i;
635 int num_ports = 0;
636
637 dbg("%s", __FUNCTION__);
638
639 transfer_buffer = kmalloc (sizeof (*connection_info), GFP_KERNEL);
640 if (!transfer_buffer) {
641 dev_err(dev, "%s - kmalloc(%Zd) failed.\n", __FUNCTION__,
642 sizeof(*connection_info));
643 return -ENOMEM;
644 }
645
646 /* send a get connection info request */
647 retval = usb_control_msg (serial->dev,
648 usb_rcvctrlpipe(serial->dev, 0),
649 VISOR_GET_CONNECTION_INFORMATION,
650 0xc2, 0x0000, 0x0000, transfer_buffer,
651 sizeof(*connection_info), 300);
652 if (retval < 0) {
653 dev_err(dev, "%s - error %d getting connection information\n",
654 __FUNCTION__, retval);
655 goto exit;
656 }
657
658 if (retval == sizeof(*connection_info)) {
659 connection_info = (struct visor_connection_info *)transfer_buffer;
660
661 num_ports = le16_to_cpu(connection_info->num_ports);
662 for (i = 0; i < num_ports; ++i) {
663 switch (connection_info->connections[i].port_function_id) {
664 case VISOR_FUNCTION_GENERIC:
665 string = "Generic";
666 break;
667 case VISOR_FUNCTION_DEBUGGER:
668 string = "Debugger";
669 break;
670 case VISOR_FUNCTION_HOTSYNC:
671 string = "HotSync";
672 break;
673 case VISOR_FUNCTION_CONSOLE:
674 string = "Console";
675 break;
676 case VISOR_FUNCTION_REMOTE_FILE_SYS:
677 string = "Remote File System";
678 break;
679 default:
680 string = "unknown";
681 break;
682 }
683 dev_info(dev, "%s: port %d, is for %s use\n",
684 serial->type->description,
685 connection_info->connections[i].port, string);
686 }
687 }
688 /*
689 * Handle devices that report invalid stuff here.
690 */
691 if (num_ports == 0 || num_ports > 2) {
692 dev_warn (dev, "%s: No valid connect info available\n",
693 serial->type->description);
694 num_ports = 2;
695 }
696
697 dev_info(dev, "%s: Number of ports: %d\n", serial->type->description,
698 num_ports);
699
700 /*
701 * save off our num_ports info so that we can use it in the
702 * calc_num_ports callback
703 */
704 usb_set_serial_data(serial, (void *)(long)num_ports);
705
706 /* ask for the number of bytes available, but ignore the response as it is broken */
707 retval = usb_control_msg (serial->dev,
708 usb_rcvctrlpipe(serial->dev, 0),
709 VISOR_REQUEST_BYTES_AVAILABLE,
710 0xc2, 0x0000, 0x0005, transfer_buffer,
711 0x02, 300);
712 if (retval < 0)
713 dev_err(dev, "%s - error %d getting bytes available request\n",
714 __FUNCTION__, retval);
715 retval = 0;
716
717 exit:
718 kfree (transfer_buffer);
719
720 return retval;
721 }
722
723 static int palm_os_4_probe (struct usb_serial *serial, const struct usb_device_id *id)
724 {
725 struct device *dev = &serial->dev->dev;
726 struct palm_ext_connection_info *connection_info;
727 unsigned char *transfer_buffer;
728 int retval;
729
730 dbg("%s", __FUNCTION__);
731
732 transfer_buffer = kmalloc (sizeof (*connection_info), GFP_KERNEL);
733 if (!transfer_buffer) {
734 dev_err(dev, "%s - kmalloc(%Zd) failed.\n", __FUNCTION__,
735 sizeof(*connection_info));
736 return -ENOMEM;
737 }
738
739 retval = usb_control_msg (serial->dev,
740 usb_rcvctrlpipe(serial->dev, 0),
741 PALM_GET_EXT_CONNECTION_INFORMATION,
742 0xc2, 0x0000, 0x0000, transfer_buffer,
743 sizeof (*connection_info), 300);
744 if (retval < 0)
745 dev_err(dev, "%s - error %d getting connection info\n",
746 __FUNCTION__, retval);
747 else
748 usb_serial_debug_data(debug, &serial->dev->dev, __FUNCTION__,
749 retval, transfer_buffer);
750
751 kfree (transfer_buffer);
752 return 0;
753 }
754
755
756 static int visor_probe (struct usb_serial *serial, const struct usb_device_id *id)
757 {
758 int retval = 0;
759 int (*startup) (struct usb_serial *serial, const struct usb_device_id *id);
760
761 dbg("%s", __FUNCTION__);
762
763 if (serial->dev->actconfig->desc.bConfigurationValue != 1) {
764 err("active config #%d != 1 ??",
765 serial->dev->actconfig->desc.bConfigurationValue);
766 return -ENODEV;
767 }
768
769 if (id->driver_info) {
770 startup = (void *)id->driver_info;
771 retval = startup(serial, id);
772 }
773
774 return retval;
775 }
776
777 static int visor_calc_num_ports (struct usb_serial *serial)
778 {
779 int num_ports = (int)(long)(usb_get_serial_data(serial));
780
781 if (num_ports)
782 usb_set_serial_data(serial, NULL);
783
784 return num_ports;
785 }
786
787 static int generic_startup(struct usb_serial *serial)
788 {
789 struct usb_serial_port **ports = serial->port;
790 struct visor_private *priv;
791 int i;
792
793 for (i = 0; i < serial->num_ports; ++i) {
794 priv = kzalloc (sizeof(*priv), GFP_KERNEL);
795 if (!priv) {
796 while (i-- != 0) {
797 priv = usb_get_serial_port_data(ports[i]);
798 usb_set_serial_port_data(ports[i], NULL);
799 kfree(priv);
800 }
801 return -ENOMEM;
802 }
803 spin_lock_init(&priv->lock);
804 usb_set_serial_port_data(ports[i], priv);
805 }
806 return 0;
807 }
808
809 static int clie_3_5_startup (struct usb_serial *serial)
810 {
811 struct device *dev = &serial->dev->dev;
812 int result;
813 u8 data;
814
815 dbg("%s", __FUNCTION__);
816
817 /*
818 * Note that PEG-300 series devices expect the following two calls.
819 */
820
821 /* get the config number */
822 result = usb_control_msg (serial->dev, usb_rcvctrlpipe(serial->dev, 0),
823 USB_REQ_GET_CONFIGURATION, USB_DIR_IN,
824 0, 0, &data, 1, 3000);
825 if (result < 0) {
826 dev_err(dev, "%s: get config number failed: %d\n", __FUNCTION__, result);
827 return result;
828 }
829 if (result != 1) {
830 dev_err(dev, "%s: get config number bad return length: %d\n", __FUNCTION__, result);
831 return -EIO;
832 }
833
834 /* get the interface number */
835 result = usb_control_msg (serial->dev, usb_rcvctrlpipe(serial->dev, 0),
836 USB_REQ_GET_INTERFACE,
837 USB_DIR_IN | USB_RECIP_INTERFACE,
838 0, 0, &data, 1, 3000);
839 if (result < 0) {
840 dev_err(dev, "%s: get interface number failed: %d\n", __FUNCTION__, result);
841 return result;
842 }
843 if (result != 1) {
844 dev_err(dev, "%s: get interface number bad return length: %d\n", __FUNCTION__, 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) == HANDSPRING_VENDOR_ID) ||
858 (le16_to_cpu(serial->dev->descriptor.idVendor) == KYOCERA_VENDOR_ID)) ||
859 (serial->num_interrupt_in == 0))
860 goto generic_startup;
861
862 dbg("%s", __FUNCTION__);
863
864 /*
865 * It appears that Treos and Kyoceras want to use the
866 * 1st bulk in endpoint to communicate with the 2nd bulk out endpoint,
867 * so let's swap the 1st and 2nd bulk in and interrupt endpoints.
868 * Note that swapping the bulk out endpoints would break lots of
869 * apps that want to communicate on the second port.
870 */
871 #define COPY_PORT(dest, src) \
872 dest->read_urb = src->read_urb; \
873 dest->bulk_in_endpointAddress = src->bulk_in_endpointAddress; \
874 dest->bulk_in_buffer = src->bulk_in_buffer; \
875 dest->interrupt_in_urb = src->interrupt_in_urb; \
876 dest->interrupt_in_endpointAddress = src->interrupt_in_endpointAddress; \
877 dest->interrupt_in_buffer = src->interrupt_in_buffer;
878
879 swap_port = kmalloc(sizeof(*swap_port), GFP_KERNEL);
880 if (!swap_port)
881 return -ENOMEM;
882 COPY_PORT(swap_port, serial->port[0]);
883 COPY_PORT(serial->port[0], serial->port[1]);
884 COPY_PORT(serial->port[1], swap_port);
885 kfree(swap_port);
886
887 generic_startup:
888 return generic_startup(serial);
889 }
890
891 static int clie_5_attach (struct usb_serial *serial)
892 {
893 dbg("%s", __FUNCTION__);
894
895 /* TH55 registers 2 ports.
896 Communication in from the UX50/TH55 uses bulk_in_endpointAddress from port 0
897 Communication out to the UX50/TH55 uses bulk_out_endpointAddress from port 1
898
899 Lets do a quick and dirty mapping
900 */
901
902 /* some sanity check */
903 if (serial->num_ports < 2)
904 return -1;
905
906 /* port 0 now uses the modified endpoint Address */
907 serial->port[0]->bulk_out_endpointAddress = serial->port[1]->bulk_out_endpointAddress;
908
909 return generic_startup(serial);
910 }
911
912 static void visor_shutdown (struct usb_serial *serial)
913 {
914 struct visor_private *priv;
915 int i;
916
917 dbg("%s", __FUNCTION__);
918
919 for (i = 0; i < serial->num_ports; i++) {
920 priv = usb_get_serial_port_data(serial->port[i]);
921 if (priv) {
922 usb_set_serial_port_data(serial->port[i], NULL);
923 kfree(priv);
924 }
925 }
926 }
927
928 static int visor_ioctl (struct usb_serial_port *port, struct file * file, unsigned int cmd, unsigned long arg)
929 {
930 dbg("%s - port %d, cmd 0x%.4x", __FUNCTION__, port->number, cmd);
931
932 return -ENOIOCTLCMD;
933 }
934
935 static int __init visor_init (void)
936 {
937 int i, retval;
938 /* Only if parameters were passed to us */
939 if ((vendor>0) && (product>0)) {
940 struct usb_device_id usb_dev_temp[]=
941 {{USB_DEVICE(vendor, product),
942 .driver_info = (kernel_ulong_t)&palm_os_4_probe }};
943
944 /* Find the last entry in id_table */
945 for (i=0; ; i++) {
946 if (id_table[i].idVendor==0) {
947 id_table[i] = usb_dev_temp[0];
948 break;
949 }
950 }
951 /* Find the last entry in id_table_combined */
952 for (i=0; ; i++) {
953 if (id_table_combined[i].idVendor==0) {
954 id_table_combined[i] = usb_dev_temp[0];
955 break;
956 }
957 }
958 info("Untested USB device specified at time of module insertion");
959 info("Warning: This is not guaranteed to work");
960 info("Using a newer kernel is preferred to this method");
961 info("Adding Palm OS protocol 4.x support for unknown device: 0x%x/0x%x",
962 vendor, product);
963 }
964 retval = usb_serial_register(&handspring_device);
965 if (retval)
966 goto failed_handspring_register;
967 retval = usb_serial_register(&clie_3_5_device);
968 if (retval)
969 goto failed_clie_3_5_register;
970 retval = usb_serial_register(&clie_5_device);
971 if (retval)
972 goto failed_clie_5_register;
973 retval = usb_register(&visor_driver);
974 if (retval)
975 goto failed_usb_register;
976 info(DRIVER_DESC);
977
978 return 0;
979 failed_usb_register:
980 usb_serial_deregister(&clie_5_device);
981 failed_clie_5_register:
982 usb_serial_deregister(&clie_3_5_device);
983 failed_clie_3_5_register:
984 usb_serial_deregister(&handspring_device);
985 failed_handspring_register:
986 return retval;
987 }
988
989
990 static void __exit visor_exit (void)
991 {
992 usb_deregister (&visor_driver);
993 usb_serial_deregister (&handspring_device);
994 usb_serial_deregister (&clie_3_5_device);
995 usb_serial_deregister (&clie_5_device);
996 }
997
998
999 module_init(visor_init);
1000 module_exit(visor_exit);
1001
1002 MODULE_AUTHOR( DRIVER_AUTHOR );
1003 MODULE_DESCRIPTION( DRIVER_DESC );
1004 MODULE_LICENSE("GPL");
1005
1006 module_param(debug, bool, S_IRUGO | S_IWUSR);
1007 MODULE_PARM_DESC(debug, "Debug enabled or not");
1008 module_param(stats, bool, S_IRUGO | S_IWUSR);
1009 MODULE_PARM_DESC(stats, "Enables statistics or not");
1010
1011 module_param(vendor, ushort, 0);
1012 MODULE_PARM_DESC(vendor, "User specified vendor ID");
1013 module_param(product, ushort, 0);
1014 MODULE_PARM_DESC(product, "User specified product ID");
1015
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