]>
Commit | Line | Data |
---|---|---|
1 | /* | |
2 | * USB ConnectTech WhiteHEAT driver | |
3 | * | |
4 | * Copyright (C) 2002 | |
5 | * Connect Tech Inc. | |
6 | * | |
7 | * Copyright (C) 1999 - 2001 | |
8 | * Greg Kroah-Hartman (greg@kroah.com) | |
9 | * | |
10 | * This program is free software; you can redistribute it and/or modify | |
11 | * it under the terms of the GNU General Public License as published by | |
12 | * the Free Software Foundation; either version 2 of the License, or | |
13 | * (at your option) any later version. | |
14 | * | |
15 | * See Documentation/usb/usb-serial.txt for more information on using this driver | |
16 | * | |
17 | * (10/09/2002) Stuart MacDonald (stuartm@connecttech.com) | |
18 | * Upgrade to full working driver | |
19 | * | |
20 | * (05/30/2001) gkh | |
21 | * switched from using spinlock to a semaphore, which fixes lots of problems. | |
22 | * | |
23 | * (04/08/2001) gb | |
24 | * Identify version on module load. | |
25 | * | |
26 | * 2001_Mar_19 gkh | |
27 | * Fixed MOD_INC and MOD_DEC logic, the ability to open a port more | |
28 | * than once, and the got the proper usb_device_id table entries so | |
29 | * the driver works again. | |
30 | * | |
31 | * (11/01/2000) Adam J. Richter | |
32 | * usb_device_id table support | |
33 | * | |
34 | * (10/05/2000) gkh | |
35 | * Fixed bug with urb->dev not being set properly, now that the usb | |
36 | * core needs it. | |
37 | * | |
38 | * (10/03/2000) smd | |
39 | * firmware is improved to guard against crap sent to device | |
40 | * firmware now replies CMD_FAILURE on bad things | |
41 | * read_callback fix you provided for private info struct | |
42 | * command_finished now indicates success or fail | |
43 | * setup_port struct now packed to avoid gcc padding | |
44 | * firmware uses 1 based port numbering, driver now handles that | |
45 | * | |
46 | * (09/11/2000) gkh | |
47 | * Removed DEBUG #ifdefs with call to usb_serial_debug_data | |
48 | * | |
49 | * (07/19/2000) gkh | |
50 | * Added module_init and module_exit functions to handle the fact that this | |
51 | * driver is a loadable module now. | |
52 | * Fixed bug with port->minor that was found by Al Borchers | |
53 | * | |
54 | * (07/04/2000) gkh | |
55 | * Added support for port settings. Baud rate can now be changed. Line signals | |
56 | * are not transferred to and from the tty layer yet, but things seem to be | |
57 | * working well now. | |
58 | * | |
59 | * (05/04/2000) gkh | |
60 | * First cut at open and close commands. Data can flow through the ports at | |
61 | * default speeds now. | |
62 | * | |
63 | * (03/26/2000) gkh | |
64 | * Split driver up into device specific pieces. | |
65 | * | |
66 | */ | |
67 | ||
68 | #include <linux/kernel.h> | |
69 | #include <linux/errno.h> | |
70 | #include <linux/init.h> | |
71 | #include <linux/slab.h> | |
72 | #include <linux/tty.h> | |
73 | #include <linux/tty_driver.h> | |
74 | #include <linux/tty_flip.h> | |
75 | #include <linux/module.h> | |
76 | #include <linux/spinlock.h> | |
77 | #include <linux/mutex.h> | |
78 | #include <asm/uaccess.h> | |
79 | #include <asm/termbits.h> | |
80 | #include <linux/usb.h> | |
81 | #include <linux/serial_reg.h> | |
82 | #include <linux/serial.h> | |
83 | #include <linux/usb/serial.h> | |
84 | #include "whiteheat_fw.h" /* firmware for the ConnectTech WhiteHEAT device */ | |
85 | #include "whiteheat.h" /* WhiteHEAT specific commands */ | |
86 | ||
87 | static int debug; | |
88 | ||
89 | #ifndef CMSPAR | |
90 | #define CMSPAR 0 | |
91 | #endif | |
92 | ||
93 | /* | |
94 | * Version Information | |
95 | */ | |
96 | #define DRIVER_VERSION "v2.0" | |
97 | #define DRIVER_AUTHOR "Greg Kroah-Hartman <greg@kroah.com>, Stuart MacDonald <stuartm@connecttech.com>" | |
98 | #define DRIVER_DESC "USB ConnectTech WhiteHEAT driver" | |
99 | ||
100 | #define CONNECT_TECH_VENDOR_ID 0x0710 | |
101 | #define CONNECT_TECH_FAKE_WHITE_HEAT_ID 0x0001 | |
102 | #define CONNECT_TECH_WHITE_HEAT_ID 0x8001 | |
103 | ||
104 | /* | |
105 | ID tables for whiteheat are unusual, because we want to different | |
106 | things for different versions of the device. Eventually, this | |
107 | will be doable from a single table. But, for now, we define two | |
108 | separate ID tables, and then a third table that combines them | |
109 | just for the purpose of exporting the autoloading information. | |
110 | */ | |
111 | static struct usb_device_id id_table_std [] = { | |
112 | { USB_DEVICE(CONNECT_TECH_VENDOR_ID, CONNECT_TECH_WHITE_HEAT_ID) }, | |
113 | { } /* Terminating entry */ | |
114 | }; | |
115 | ||
116 | static struct usb_device_id id_table_prerenumeration [] = { | |
117 | { USB_DEVICE(CONNECT_TECH_VENDOR_ID, CONNECT_TECH_FAKE_WHITE_HEAT_ID) }, | |
118 | { } /* Terminating entry */ | |
119 | }; | |
120 | ||
121 | static struct usb_device_id id_table_combined [] = { | |
122 | { USB_DEVICE(CONNECT_TECH_VENDOR_ID, CONNECT_TECH_WHITE_HEAT_ID) }, | |
123 | { USB_DEVICE(CONNECT_TECH_VENDOR_ID, CONNECT_TECH_FAKE_WHITE_HEAT_ID) }, | |
124 | { } /* Terminating entry */ | |
125 | }; | |
126 | ||
127 | MODULE_DEVICE_TABLE (usb, id_table_combined); | |
128 | ||
129 | static struct usb_driver whiteheat_driver = { | |
130 | .name = "whiteheat", | |
131 | .probe = usb_serial_probe, | |
132 | .disconnect = usb_serial_disconnect, | |
133 | .id_table = id_table_combined, | |
134 | .no_dynamic_id = 1, | |
135 | }; | |
136 | ||
137 | /* function prototypes for the Connect Tech WhiteHEAT prerenumeration device */ | |
138 | static int whiteheat_firmware_download (struct usb_serial *serial, const struct usb_device_id *id); | |
139 | static int whiteheat_firmware_attach (struct usb_serial *serial); | |
140 | ||
141 | /* function prototypes for the Connect Tech WhiteHEAT serial converter */ | |
142 | static int whiteheat_attach (struct usb_serial *serial); | |
143 | static void whiteheat_shutdown (struct usb_serial *serial); | |
144 | static int whiteheat_open (struct usb_serial_port *port, struct file *filp); | |
145 | static void whiteheat_close (struct usb_serial_port *port, struct file *filp); | |
146 | static int whiteheat_write (struct usb_serial_port *port, const unsigned char *buf, int count); | |
147 | static int whiteheat_write_room (struct usb_serial_port *port); | |
148 | static int whiteheat_ioctl (struct usb_serial_port *port, struct file * file, unsigned int cmd, unsigned long arg); | |
149 | static void whiteheat_set_termios (struct usb_serial_port *port, struct ktermios * old); | |
150 | static int whiteheat_tiocmget (struct usb_serial_port *port, struct file *file); | |
151 | static int whiteheat_tiocmset (struct usb_serial_port *port, struct file *file, unsigned int set, unsigned int clear); | |
152 | static void whiteheat_break_ctl (struct usb_serial_port *port, int break_state); | |
153 | static int whiteheat_chars_in_buffer (struct usb_serial_port *port); | |
154 | static void whiteheat_throttle (struct usb_serial_port *port); | |
155 | static void whiteheat_unthrottle (struct usb_serial_port *port); | |
156 | static void whiteheat_read_callback (struct urb *urb); | |
157 | static void whiteheat_write_callback (struct urb *urb); | |
158 | ||
159 | static struct usb_serial_driver whiteheat_fake_device = { | |
160 | .driver = { | |
161 | .owner = THIS_MODULE, | |
162 | .name = "whiteheatnofirm", | |
163 | }, | |
164 | .description = "Connect Tech - WhiteHEAT - (prerenumeration)", | |
165 | .usb_driver = &whiteheat_driver, | |
166 | .id_table = id_table_prerenumeration, | |
167 | .num_ports = 1, | |
168 | .probe = whiteheat_firmware_download, | |
169 | .attach = whiteheat_firmware_attach, | |
170 | }; | |
171 | ||
172 | static struct usb_serial_driver whiteheat_device = { | |
173 | .driver = { | |
174 | .owner = THIS_MODULE, | |
175 | .name = "whiteheat", | |
176 | }, | |
177 | .description = "Connect Tech - WhiteHEAT", | |
178 | .usb_driver = &whiteheat_driver, | |
179 | .id_table = id_table_std, | |
180 | .num_ports = 4, | |
181 | .attach = whiteheat_attach, | |
182 | .shutdown = whiteheat_shutdown, | |
183 | .open = whiteheat_open, | |
184 | .close = whiteheat_close, | |
185 | .write = whiteheat_write, | |
186 | .write_room = whiteheat_write_room, | |
187 | .ioctl = whiteheat_ioctl, | |
188 | .set_termios = whiteheat_set_termios, | |
189 | .break_ctl = whiteheat_break_ctl, | |
190 | .tiocmget = whiteheat_tiocmget, | |
191 | .tiocmset = whiteheat_tiocmset, | |
192 | .chars_in_buffer = whiteheat_chars_in_buffer, | |
193 | .throttle = whiteheat_throttle, | |
194 | .unthrottle = whiteheat_unthrottle, | |
195 | .read_bulk_callback = whiteheat_read_callback, | |
196 | .write_bulk_callback = whiteheat_write_callback, | |
197 | }; | |
198 | ||
199 | ||
200 | struct whiteheat_command_private { | |
201 | struct mutex mutex; | |
202 | __u8 port_running; | |
203 | __u8 command_finished; | |
204 | wait_queue_head_t wait_command; /* for handling sleeping while waiting for a command to finish */ | |
205 | __u8 result_buffer[64]; | |
206 | }; | |
207 | ||
208 | ||
209 | #define THROTTLED 0x01 | |
210 | #define ACTUALLY_THROTTLED 0x02 | |
211 | ||
212 | static int urb_pool_size = 8; | |
213 | ||
214 | struct whiteheat_urb_wrap { | |
215 | struct list_head list; | |
216 | struct urb *urb; | |
217 | }; | |
218 | ||
219 | struct whiteheat_private { | |
220 | spinlock_t lock; | |
221 | __u8 flags; | |
222 | __u8 mcr; | |
223 | struct list_head rx_urbs_free; | |
224 | struct list_head rx_urbs_submitted; | |
225 | struct list_head rx_urb_q; | |
226 | struct work_struct rx_work; | |
227 | struct usb_serial_port *port; | |
228 | struct list_head tx_urbs_free; | |
229 | struct list_head tx_urbs_submitted; | |
230 | struct mutex deathwarrant; | |
231 | }; | |
232 | ||
233 | ||
234 | /* local function prototypes */ | |
235 | static int start_command_port(struct usb_serial *serial); | |
236 | static void stop_command_port(struct usb_serial *serial); | |
237 | static void command_port_write_callback(struct urb *urb); | |
238 | static void command_port_read_callback(struct urb *urb); | |
239 | ||
240 | static int start_port_read(struct usb_serial_port *port); | |
241 | static struct whiteheat_urb_wrap *urb_to_wrap(struct urb *urb, struct list_head *head); | |
242 | static struct list_head *list_first(struct list_head *head); | |
243 | static void rx_data_softint(struct work_struct *work); | |
244 | ||
245 | static int firm_send_command(struct usb_serial_port *port, __u8 command, __u8 *data, __u8 datasize); | |
246 | static int firm_open(struct usb_serial_port *port); | |
247 | static int firm_close(struct usb_serial_port *port); | |
248 | static int firm_setup_port(struct usb_serial_port *port); | |
249 | static int firm_set_rts(struct usb_serial_port *port, __u8 onoff); | |
250 | static int firm_set_dtr(struct usb_serial_port *port, __u8 onoff); | |
251 | static int firm_set_break(struct usb_serial_port *port, __u8 onoff); | |
252 | static int firm_purge(struct usb_serial_port *port, __u8 rxtx); | |
253 | static int firm_get_dtr_rts(struct usb_serial_port *port); | |
254 | static int firm_report_tx_done(struct usb_serial_port *port); | |
255 | ||
256 | ||
257 | #define COMMAND_PORT 4 | |
258 | #define COMMAND_TIMEOUT (2*HZ) /* 2 second timeout for a command */ | |
259 | #define COMMAND_TIMEOUT_MS 2000 | |
260 | #define CLOSING_DELAY (30 * HZ) | |
261 | ||
262 | ||
263 | /***************************************************************************** | |
264 | * Connect Tech's White Heat prerenumeration driver functions | |
265 | *****************************************************************************/ | |
266 | ||
267 | /* steps to download the firmware to the WhiteHEAT device: | |
268 | - hold the reset (by writing to the reset bit of the CPUCS register) | |
269 | - download the VEND_AX.HEX file to the chip using VENDOR_REQUEST-ANCHOR_LOAD | |
270 | - release the reset (by writing to the CPUCS register) | |
271 | - download the WH.HEX file for all addresses greater than 0x1b3f using | |
272 | VENDOR_REQUEST-ANCHOR_EXTERNAL_RAM_LOAD | |
273 | - hold the reset | |
274 | - download the WH.HEX file for all addresses less than 0x1b40 using | |
275 | VENDOR_REQUEST_ANCHOR_LOAD | |
276 | - release the reset | |
277 | - device renumerated itself and comes up as new device id with all | |
278 | firmware download completed. | |
279 | */ | |
280 | static int whiteheat_firmware_download (struct usb_serial *serial, const struct usb_device_id *id) | |
281 | { | |
282 | int response; | |
283 | const struct whiteheat_hex_record *record; | |
284 | ||
285 | dbg("%s", __FUNCTION__); | |
286 | ||
287 | response = ezusb_set_reset (serial, 1); | |
288 | ||
289 | record = &whiteheat_loader[0]; | |
290 | while (record->address != 0xffff) { | |
291 | response = ezusb_writememory (serial, record->address, | |
292 | (unsigned char *)record->data, record->data_size, 0xa0); | |
293 | if (response < 0) { | |
294 | err("%s - ezusb_writememory failed for loader (%d %04X %p %d)", | |
295 | __FUNCTION__, response, record->address, record->data, record->data_size); | |
296 | break; | |
297 | } | |
298 | ++record; | |
299 | } | |
300 | ||
301 | response = ezusb_set_reset (serial, 0); | |
302 | ||
303 | record = &whiteheat_firmware[0]; | |
304 | while (record->address < 0x1b40) { | |
305 | ++record; | |
306 | } | |
307 | while (record->address != 0xffff) { | |
308 | response = ezusb_writememory (serial, record->address, | |
309 | (unsigned char *)record->data, record->data_size, 0xa3); | |
310 | if (response < 0) { | |
311 | err("%s - ezusb_writememory failed for first firmware step (%d %04X %p %d)", | |
312 | __FUNCTION__, response, record->address, record->data, record->data_size); | |
313 | break; | |
314 | } | |
315 | ++record; | |
316 | } | |
317 | ||
318 | response = ezusb_set_reset (serial, 1); | |
319 | ||
320 | record = &whiteheat_firmware[0]; | |
321 | while (record->address < 0x1b40) { | |
322 | response = ezusb_writememory (serial, record->address, | |
323 | (unsigned char *)record->data, record->data_size, 0xa0); | |
324 | if (response < 0) { | |
325 | err("%s - ezusb_writememory failed for second firmware step (%d %04X %p %d)", | |
326 | __FUNCTION__, response, record->address, record->data, record->data_size); | |
327 | break; | |
328 | } | |
329 | ++record; | |
330 | } | |
331 | ||
332 | response = ezusb_set_reset (serial, 0); | |
333 | ||
334 | return 0; | |
335 | } | |
336 | ||
337 | ||
338 | static int whiteheat_firmware_attach (struct usb_serial *serial) | |
339 | { | |
340 | /* We want this device to fail to have a driver assigned to it */ | |
341 | return 1; | |
342 | } | |
343 | ||
344 | ||
345 | /***************************************************************************** | |
346 | * Connect Tech's White Heat serial driver functions | |
347 | *****************************************************************************/ | |
348 | static int whiteheat_attach (struct usb_serial *serial) | |
349 | { | |
350 | struct usb_serial_port *command_port; | |
351 | struct whiteheat_command_private *command_info; | |
352 | struct usb_serial_port *port; | |
353 | struct whiteheat_private *info; | |
354 | struct whiteheat_hw_info *hw_info; | |
355 | int pipe; | |
356 | int ret; | |
357 | int alen; | |
358 | __u8 *command; | |
359 | __u8 *result; | |
360 | int i; | |
361 | int j; | |
362 | struct urb *urb; | |
363 | int buf_size; | |
364 | struct whiteheat_urb_wrap *wrap; | |
365 | struct list_head *tmp; | |
366 | ||
367 | command_port = serial->port[COMMAND_PORT]; | |
368 | ||
369 | pipe = usb_sndbulkpipe (serial->dev, command_port->bulk_out_endpointAddress); | |
370 | command = kmalloc(2, GFP_KERNEL); | |
371 | if (!command) | |
372 | goto no_command_buffer; | |
373 | command[0] = WHITEHEAT_GET_HW_INFO; | |
374 | command[1] = 0; | |
375 | ||
376 | result = kmalloc(sizeof(*hw_info) + 1, GFP_KERNEL); | |
377 | if (!result) | |
378 | goto no_result_buffer; | |
379 | /* | |
380 | * When the module is reloaded the firmware is still there and | |
381 | * the endpoints are still in the usb core unchanged. This is the | |
382 | * unlinking bug in disguise. Same for the call below. | |
383 | */ | |
384 | usb_clear_halt(serial->dev, pipe); | |
385 | ret = usb_bulk_msg (serial->dev, pipe, command, 2, &alen, COMMAND_TIMEOUT_MS); | |
386 | if (ret) { | |
387 | err("%s: Couldn't send command [%d]", serial->type->description, ret); | |
388 | goto no_firmware; | |
389 | } else if (alen != 2) { | |
390 | err("%s: Send command incomplete [%d]", serial->type->description, alen); | |
391 | goto no_firmware; | |
392 | } | |
393 | ||
394 | pipe = usb_rcvbulkpipe (serial->dev, command_port->bulk_in_endpointAddress); | |
395 | /* See the comment on the usb_clear_halt() above */ | |
396 | usb_clear_halt(serial->dev, pipe); | |
397 | ret = usb_bulk_msg (serial->dev, pipe, result, sizeof(*hw_info) + 1, &alen, COMMAND_TIMEOUT_MS); | |
398 | if (ret) { | |
399 | err("%s: Couldn't get results [%d]", serial->type->description, ret); | |
400 | goto no_firmware; | |
401 | } else if (alen != sizeof(*hw_info) + 1) { | |
402 | err("%s: Get results incomplete [%d]", serial->type->description, alen); | |
403 | goto no_firmware; | |
404 | } else if (result[0] != command[0]) { | |
405 | err("%s: Command failed [%d]", serial->type->description, result[0]); | |
406 | goto no_firmware; | |
407 | } | |
408 | ||
409 | hw_info = (struct whiteheat_hw_info *)&result[1]; | |
410 | ||
411 | info("%s: Driver %s: Firmware v%d.%02d", serial->type->description, | |
412 | DRIVER_VERSION, hw_info->sw_major_rev, hw_info->sw_minor_rev); | |
413 | ||
414 | for (i = 0; i < serial->num_ports; i++) { | |
415 | port = serial->port[i]; | |
416 | ||
417 | info = kmalloc(sizeof(struct whiteheat_private), GFP_KERNEL); | |
418 | if (info == NULL) { | |
419 | err("%s: Out of memory for port structures\n", serial->type->description); | |
420 | goto no_private; | |
421 | } | |
422 | ||
423 | spin_lock_init(&info->lock); | |
424 | mutex_init(&info->deathwarrant); | |
425 | info->flags = 0; | |
426 | info->mcr = 0; | |
427 | INIT_WORK(&info->rx_work, rx_data_softint); | |
428 | info->port = port; | |
429 | ||
430 | INIT_LIST_HEAD(&info->rx_urbs_free); | |
431 | INIT_LIST_HEAD(&info->rx_urbs_submitted); | |
432 | INIT_LIST_HEAD(&info->rx_urb_q); | |
433 | INIT_LIST_HEAD(&info->tx_urbs_free); | |
434 | INIT_LIST_HEAD(&info->tx_urbs_submitted); | |
435 | ||
436 | for (j = 0; j < urb_pool_size; j++) { | |
437 | urb = usb_alloc_urb(0, GFP_KERNEL); | |
438 | if (!urb) { | |
439 | err("No free urbs available"); | |
440 | goto no_rx_urb; | |
441 | } | |
442 | buf_size = port->read_urb->transfer_buffer_length; | |
443 | urb->transfer_buffer = kmalloc(buf_size, GFP_KERNEL); | |
444 | if (!urb->transfer_buffer) { | |
445 | err("Couldn't allocate urb buffer"); | |
446 | goto no_rx_buf; | |
447 | } | |
448 | wrap = kmalloc(sizeof(*wrap), GFP_KERNEL); | |
449 | if (!wrap) { | |
450 | err("Couldn't allocate urb wrapper"); | |
451 | goto no_rx_wrap; | |
452 | } | |
453 | usb_fill_bulk_urb(urb, serial->dev, | |
454 | usb_rcvbulkpipe(serial->dev, | |
455 | port->bulk_in_endpointAddress), | |
456 | urb->transfer_buffer, buf_size, | |
457 | whiteheat_read_callback, port); | |
458 | wrap->urb = urb; | |
459 | list_add(&wrap->list, &info->rx_urbs_free); | |
460 | ||
461 | urb = usb_alloc_urb(0, GFP_KERNEL); | |
462 | if (!urb) { | |
463 | err("No free urbs available"); | |
464 | goto no_tx_urb; | |
465 | } | |
466 | buf_size = port->write_urb->transfer_buffer_length; | |
467 | urb->transfer_buffer = kmalloc(buf_size, GFP_KERNEL); | |
468 | if (!urb->transfer_buffer) { | |
469 | err("Couldn't allocate urb buffer"); | |
470 | goto no_tx_buf; | |
471 | } | |
472 | wrap = kmalloc(sizeof(*wrap), GFP_KERNEL); | |
473 | if (!wrap) { | |
474 | err("Couldn't allocate urb wrapper"); | |
475 | goto no_tx_wrap; | |
476 | } | |
477 | usb_fill_bulk_urb(urb, serial->dev, | |
478 | usb_sndbulkpipe(serial->dev, | |
479 | port->bulk_out_endpointAddress), | |
480 | urb->transfer_buffer, buf_size, | |
481 | whiteheat_write_callback, port); | |
482 | wrap->urb = urb; | |
483 | list_add(&wrap->list, &info->tx_urbs_free); | |
484 | } | |
485 | ||
486 | usb_set_serial_port_data(port, info); | |
487 | } | |
488 | ||
489 | command_info = kmalloc(sizeof(struct whiteheat_command_private), GFP_KERNEL); | |
490 | if (command_info == NULL) { | |
491 | err("%s: Out of memory for port structures\n", serial->type->description); | |
492 | goto no_command_private; | |
493 | } | |
494 | ||
495 | mutex_init(&command_info->mutex); | |
496 | command_info->port_running = 0; | |
497 | init_waitqueue_head(&command_info->wait_command); | |
498 | usb_set_serial_port_data(command_port, command_info); | |
499 | command_port->write_urb->complete = command_port_write_callback; | |
500 | command_port->read_urb->complete = command_port_read_callback; | |
501 | kfree(result); | |
502 | kfree(command); | |
503 | ||
504 | return 0; | |
505 | ||
506 | no_firmware: | |
507 | /* Firmware likely not running */ | |
508 | err("%s: Unable to retrieve firmware version, try replugging\n", serial->type->description); | |
509 | err("%s: If the firmware is not running (status led not blinking)\n", serial->type->description); | |
510 | err("%s: please contact support@connecttech.com\n", serial->type->description); | |
511 | kfree(result); | |
512 | return -ENODEV; | |
513 | ||
514 | no_command_private: | |
515 | for (i = serial->num_ports - 1; i >= 0; i--) { | |
516 | port = serial->port[i]; | |
517 | info = usb_get_serial_port_data(port); | |
518 | for (j = urb_pool_size - 1; j >= 0; j--) { | |
519 | tmp = list_first(&info->tx_urbs_free); | |
520 | list_del(tmp); | |
521 | wrap = list_entry(tmp, struct whiteheat_urb_wrap, list); | |
522 | urb = wrap->urb; | |
523 | kfree(wrap); | |
524 | no_tx_wrap: | |
525 | kfree(urb->transfer_buffer); | |
526 | no_tx_buf: | |
527 | usb_free_urb(urb); | |
528 | no_tx_urb: | |
529 | tmp = list_first(&info->rx_urbs_free); | |
530 | list_del(tmp); | |
531 | wrap = list_entry(tmp, struct whiteheat_urb_wrap, list); | |
532 | urb = wrap->urb; | |
533 | kfree(wrap); | |
534 | no_rx_wrap: | |
535 | kfree(urb->transfer_buffer); | |
536 | no_rx_buf: | |
537 | usb_free_urb(urb); | |
538 | no_rx_urb: | |
539 | ; | |
540 | } | |
541 | kfree(info); | |
542 | no_private: | |
543 | ; | |
544 | } | |
545 | kfree(result); | |
546 | no_result_buffer: | |
547 | kfree(command); | |
548 | no_command_buffer: | |
549 | return -ENOMEM; | |
550 | } | |
551 | ||
552 | ||
553 | static void whiteheat_shutdown (struct usb_serial *serial) | |
554 | { | |
555 | struct usb_serial_port *command_port; | |
556 | struct usb_serial_port *port; | |
557 | struct whiteheat_private *info; | |
558 | struct whiteheat_urb_wrap *wrap; | |
559 | struct urb *urb; | |
560 | struct list_head *tmp; | |
561 | struct list_head *tmp2; | |
562 | int i; | |
563 | ||
564 | dbg("%s", __FUNCTION__); | |
565 | ||
566 | /* free up our private data for our command port */ | |
567 | command_port = serial->port[COMMAND_PORT]; | |
568 | kfree (usb_get_serial_port_data(command_port)); | |
569 | ||
570 | for (i = 0; i < serial->num_ports; i++) { | |
571 | port = serial->port[i]; | |
572 | info = usb_get_serial_port_data(port); | |
573 | list_for_each_safe(tmp, tmp2, &info->rx_urbs_free) { | |
574 | list_del(tmp); | |
575 | wrap = list_entry(tmp, struct whiteheat_urb_wrap, list); | |
576 | urb = wrap->urb; | |
577 | kfree(wrap); | |
578 | kfree(urb->transfer_buffer); | |
579 | usb_free_urb(urb); | |
580 | } | |
581 | list_for_each_safe(tmp, tmp2, &info->tx_urbs_free) { | |
582 | list_del(tmp); | |
583 | wrap = list_entry(tmp, struct whiteheat_urb_wrap, list); | |
584 | urb = wrap->urb; | |
585 | kfree(wrap); | |
586 | kfree(urb->transfer_buffer); | |
587 | usb_free_urb(urb); | |
588 | } | |
589 | kfree(info); | |
590 | } | |
591 | ||
592 | return; | |
593 | } | |
594 | ||
595 | ||
596 | static int whiteheat_open (struct usb_serial_port *port, struct file *filp) | |
597 | { | |
598 | int retval = 0; | |
599 | struct ktermios old_term; | |
600 | ||
601 | dbg("%s - port %d", __FUNCTION__, port->number); | |
602 | ||
603 | retval = start_command_port(port->serial); | |
604 | if (retval) | |
605 | goto exit; | |
606 | ||
607 | port->tty->low_latency = 1; | |
608 | ||
609 | /* send an open port command */ | |
610 | retval = firm_open(port); | |
611 | if (retval) { | |
612 | stop_command_port(port->serial); | |
613 | goto exit; | |
614 | } | |
615 | ||
616 | retval = firm_purge(port, WHITEHEAT_PURGE_RX | WHITEHEAT_PURGE_TX); | |
617 | if (retval) { | |
618 | firm_close(port); | |
619 | stop_command_port(port->serial); | |
620 | goto exit; | |
621 | } | |
622 | ||
623 | old_term.c_cflag = ~port->tty->termios->c_cflag; | |
624 | old_term.c_iflag = ~port->tty->termios->c_iflag; | |
625 | whiteheat_set_termios(port, &old_term); | |
626 | ||
627 | /* Work around HCD bugs */ | |
628 | usb_clear_halt(port->serial->dev, port->read_urb->pipe); | |
629 | usb_clear_halt(port->serial->dev, port->write_urb->pipe); | |
630 | ||
631 | /* Start reading from the device */ | |
632 | retval = start_port_read(port); | |
633 | if (retval) { | |
634 | err("%s - failed submitting read urb, error %d", __FUNCTION__, retval); | |
635 | firm_close(port); | |
636 | stop_command_port(port->serial); | |
637 | goto exit; | |
638 | } | |
639 | ||
640 | exit: | |
641 | dbg("%s - exit, retval = %d", __FUNCTION__, retval); | |
642 | return retval; | |
643 | } | |
644 | ||
645 | ||
646 | static void whiteheat_close(struct usb_serial_port *port, struct file * filp) | |
647 | { | |
648 | struct whiteheat_private *info = usb_get_serial_port_data(port); | |
649 | struct whiteheat_urb_wrap *wrap; | |
650 | struct urb *urb; | |
651 | struct list_head *tmp; | |
652 | struct list_head *tmp2; | |
653 | ||
654 | dbg("%s - port %d", __FUNCTION__, port->number); | |
655 | ||
656 | mutex_lock(&port->serial->disc_mutex); | |
657 | /* filp is NULL when called from usb_serial_disconnect */ | |
658 | if ((filp && (tty_hung_up_p(filp))) || port->serial->disconnected) { | |
659 | mutex_unlock(&port->serial->disc_mutex); | |
660 | return; | |
661 | } | |
662 | mutex_unlock(&port->serial->disc_mutex); | |
663 | ||
664 | port->tty->closing = 1; | |
665 | ||
666 | /* | |
667 | * Not currently in use; tty_wait_until_sent() calls | |
668 | * serial_chars_in_buffer() which deadlocks on the second semaphore | |
669 | * acquisition. This should be fixed at some point. Greg's been | |
670 | * notified. | |
671 | if ((filp->f_flags & (O_NDELAY | O_NONBLOCK)) == 0) { | |
672 | tty_wait_until_sent(port->tty, CLOSING_DELAY); | |
673 | } | |
674 | */ | |
675 | ||
676 | if (port->tty->driver->flush_buffer) | |
677 | port->tty->driver->flush_buffer(port->tty); | |
678 | tty_ldisc_flush(port->tty); | |
679 | ||
680 | firm_report_tx_done(port); | |
681 | ||
682 | firm_close(port); | |
683 | ||
684 | printk(KERN_ERR"Before processing rx_urbs_submitted.\n"); | |
685 | /* shutdown our bulk reads and writes */ | |
686 | mutex_lock(&info->deathwarrant); | |
687 | spin_lock_irq(&info->lock); | |
688 | list_for_each_safe(tmp, tmp2, &info->rx_urbs_submitted) { | |
689 | wrap = list_entry(tmp, struct whiteheat_urb_wrap, list); | |
690 | urb = wrap->urb; | |
691 | list_del(tmp); | |
692 | spin_unlock_irq(&info->lock); | |
693 | usb_kill_urb(urb); | |
694 | spin_lock_irq(&info->lock); | |
695 | list_add(tmp, &info->rx_urbs_free); | |
696 | } | |
697 | list_for_each_safe(tmp, tmp2, &info->rx_urb_q) | |
698 | list_move(tmp, &info->rx_urbs_free); | |
699 | list_for_each_safe(tmp, tmp2, &info->tx_urbs_submitted) { | |
700 | wrap = list_entry(tmp, struct whiteheat_urb_wrap, list); | |
701 | urb = wrap->urb; | |
702 | list_del(tmp); | |
703 | spin_unlock_irq(&info->lock); | |
704 | usb_kill_urb(urb); | |
705 | spin_lock_irq(&info->lock); | |
706 | list_add(tmp, &info->tx_urbs_free); | |
707 | } | |
708 | spin_unlock_irq(&info->lock); | |
709 | mutex_unlock(&info->deathwarrant); | |
710 | ||
711 | stop_command_port(port->serial); | |
712 | ||
713 | port->tty->closing = 0; | |
714 | } | |
715 | ||
716 | ||
717 | static int whiteheat_write(struct usb_serial_port *port, const unsigned char *buf, int count) | |
718 | { | |
719 | struct usb_serial *serial = port->serial; | |
720 | struct whiteheat_private *info = usb_get_serial_port_data(port); | |
721 | struct whiteheat_urb_wrap *wrap; | |
722 | struct urb *urb; | |
723 | int result; | |
724 | int bytes; | |
725 | int sent = 0; | |
726 | unsigned long flags; | |
727 | struct list_head *tmp; | |
728 | ||
729 | dbg("%s - port %d", __FUNCTION__, port->number); | |
730 | ||
731 | if (count == 0) { | |
732 | dbg("%s - write request of 0 bytes", __FUNCTION__); | |
733 | return (0); | |
734 | } | |
735 | ||
736 | while (count) { | |
737 | spin_lock_irqsave(&info->lock, flags); | |
738 | if (list_empty(&info->tx_urbs_free)) { | |
739 | spin_unlock_irqrestore(&info->lock, flags); | |
740 | break; | |
741 | } | |
742 | tmp = list_first(&info->tx_urbs_free); | |
743 | list_del(tmp); | |
744 | spin_unlock_irqrestore(&info->lock, flags); | |
745 | ||
746 | wrap = list_entry(tmp, struct whiteheat_urb_wrap, list); | |
747 | urb = wrap->urb; | |
748 | bytes = (count > port->bulk_out_size) ? port->bulk_out_size : count; | |
749 | memcpy (urb->transfer_buffer, buf + sent, bytes); | |
750 | ||
751 | usb_serial_debug_data(debug, &port->dev, __FUNCTION__, bytes, urb->transfer_buffer); | |
752 | ||
753 | urb->dev = serial->dev; | |
754 | urb->transfer_buffer_length = bytes; | |
755 | result = usb_submit_urb(urb, GFP_ATOMIC); | |
756 | if (result) { | |
757 | err("%s - failed submitting write urb, error %d", __FUNCTION__, result); | |
758 | sent = result; | |
759 | spin_lock_irqsave(&info->lock, flags); | |
760 | list_add(tmp, &info->tx_urbs_free); | |
761 | spin_unlock_irqrestore(&info->lock, flags); | |
762 | break; | |
763 | } else { | |
764 | sent += bytes; | |
765 | count -= bytes; | |
766 | spin_lock_irqsave(&info->lock, flags); | |
767 | list_add(tmp, &info->tx_urbs_submitted); | |
768 | spin_unlock_irqrestore(&info->lock, flags); | |
769 | } | |
770 | } | |
771 | ||
772 | return sent; | |
773 | } | |
774 | ||
775 | ||
776 | static int whiteheat_write_room(struct usb_serial_port *port) | |
777 | { | |
778 | struct whiteheat_private *info = usb_get_serial_port_data(port); | |
779 | struct list_head *tmp; | |
780 | int room = 0; | |
781 | unsigned long flags; | |
782 | ||
783 | dbg("%s - port %d", __FUNCTION__, port->number); | |
784 | ||
785 | spin_lock_irqsave(&info->lock, flags); | |
786 | list_for_each(tmp, &info->tx_urbs_free) | |
787 | room++; | |
788 | spin_unlock_irqrestore(&info->lock, flags); | |
789 | room *= port->bulk_out_size; | |
790 | ||
791 | dbg("%s - returns %d", __FUNCTION__, room); | |
792 | return (room); | |
793 | } | |
794 | ||
795 | ||
796 | static int whiteheat_tiocmget (struct usb_serial_port *port, struct file *file) | |
797 | { | |
798 | struct whiteheat_private *info = usb_get_serial_port_data(port); | |
799 | unsigned int modem_signals = 0; | |
800 | ||
801 | dbg("%s - port %d", __FUNCTION__, port->number); | |
802 | ||
803 | firm_get_dtr_rts(port); | |
804 | if (info->mcr & UART_MCR_DTR) | |
805 | modem_signals |= TIOCM_DTR; | |
806 | if (info->mcr & UART_MCR_RTS) | |
807 | modem_signals |= TIOCM_RTS; | |
808 | ||
809 | return modem_signals; | |
810 | } | |
811 | ||
812 | ||
813 | static int whiteheat_tiocmset (struct usb_serial_port *port, struct file *file, | |
814 | unsigned int set, unsigned int clear) | |
815 | { | |
816 | struct whiteheat_private *info = usb_get_serial_port_data(port); | |
817 | ||
818 | dbg("%s - port %d", __FUNCTION__, port->number); | |
819 | ||
820 | if (set & TIOCM_RTS) | |
821 | info->mcr |= UART_MCR_RTS; | |
822 | if (set & TIOCM_DTR) | |
823 | info->mcr |= UART_MCR_DTR; | |
824 | ||
825 | if (clear & TIOCM_RTS) | |
826 | info->mcr &= ~UART_MCR_RTS; | |
827 | if (clear & TIOCM_DTR) | |
828 | info->mcr &= ~UART_MCR_DTR; | |
829 | ||
830 | firm_set_dtr(port, info->mcr & UART_MCR_DTR); | |
831 | firm_set_rts(port, info->mcr & UART_MCR_RTS); | |
832 | return 0; | |
833 | } | |
834 | ||
835 | ||
836 | static int whiteheat_ioctl (struct usb_serial_port *port, struct file * file, unsigned int cmd, unsigned long arg) | |
837 | { | |
838 | struct serial_struct serstruct; | |
839 | void __user *user_arg = (void __user *)arg; | |
840 | ||
841 | dbg("%s - port %d, cmd 0x%.4x", __FUNCTION__, port->number, cmd); | |
842 | ||
843 | switch (cmd) { | |
844 | case TIOCGSERIAL: | |
845 | memset(&serstruct, 0, sizeof(serstruct)); | |
846 | serstruct.type = PORT_16654; | |
847 | serstruct.line = port->serial->minor; | |
848 | serstruct.port = port->number; | |
849 | serstruct.flags = ASYNC_SKIP_TEST | ASYNC_AUTO_IRQ; | |
850 | serstruct.xmit_fifo_size = port->bulk_out_size; | |
851 | serstruct.custom_divisor = 0; | |
852 | serstruct.baud_base = 460800; | |
853 | serstruct.close_delay = CLOSING_DELAY; | |
854 | serstruct.closing_wait = CLOSING_DELAY; | |
855 | ||
856 | if (copy_to_user(user_arg, &serstruct, sizeof(serstruct))) | |
857 | return -EFAULT; | |
858 | ||
859 | break; | |
860 | ||
861 | case TIOCSSERIAL: | |
862 | if (copy_from_user(&serstruct, user_arg, sizeof(serstruct))) | |
863 | return -EFAULT; | |
864 | ||
865 | /* | |
866 | * For now this is ignored. dip sets the ASYNC_[V]HI flags | |
867 | * but this isn't used by us at all. Maybe someone somewhere | |
868 | * will need the custom_divisor setting. | |
869 | */ | |
870 | ||
871 | break; | |
872 | ||
873 | default: | |
874 | break; | |
875 | } | |
876 | ||
877 | return -ENOIOCTLCMD; | |
878 | } | |
879 | ||
880 | ||
881 | static void whiteheat_set_termios(struct usb_serial_port *port, struct ktermios *old_termios) | |
882 | { | |
883 | dbg("%s -port %d", __FUNCTION__, port->number); | |
884 | firm_setup_port(port); | |
885 | } | |
886 | ||
887 | ||
888 | static void whiteheat_break_ctl(struct usb_serial_port *port, int break_state) { | |
889 | firm_set_break(port, break_state); | |
890 | } | |
891 | ||
892 | ||
893 | static int whiteheat_chars_in_buffer(struct usb_serial_port *port) | |
894 | { | |
895 | struct whiteheat_private *info = usb_get_serial_port_data(port); | |
896 | struct list_head *tmp; | |
897 | struct whiteheat_urb_wrap *wrap; | |
898 | int chars = 0; | |
899 | unsigned long flags; | |
900 | ||
901 | dbg("%s - port %d", __FUNCTION__, port->number); | |
902 | ||
903 | spin_lock_irqsave(&info->lock, flags); | |
904 | list_for_each(tmp, &info->tx_urbs_submitted) { | |
905 | wrap = list_entry(tmp, struct whiteheat_urb_wrap, list); | |
906 | chars += wrap->urb->transfer_buffer_length; | |
907 | } | |
908 | spin_unlock_irqrestore(&info->lock, flags); | |
909 | ||
910 | dbg ("%s - returns %d", __FUNCTION__, chars); | |
911 | return chars; | |
912 | } | |
913 | ||
914 | ||
915 | static void whiteheat_throttle (struct usb_serial_port *port) | |
916 | { | |
917 | struct whiteheat_private *info = usb_get_serial_port_data(port); | |
918 | unsigned long flags; | |
919 | ||
920 | dbg("%s - port %d", __FUNCTION__, port->number); | |
921 | ||
922 | spin_lock_irqsave(&info->lock, flags); | |
923 | info->flags |= THROTTLED; | |
924 | spin_unlock_irqrestore(&info->lock, flags); | |
925 | ||
926 | return; | |
927 | } | |
928 | ||
929 | ||
930 | static void whiteheat_unthrottle (struct usb_serial_port *port) | |
931 | { | |
932 | struct whiteheat_private *info = usb_get_serial_port_data(port); | |
933 | int actually_throttled; | |
934 | unsigned long flags; | |
935 | ||
936 | dbg("%s - port %d", __FUNCTION__, port->number); | |
937 | ||
938 | spin_lock_irqsave(&info->lock, flags); | |
939 | actually_throttled = info->flags & ACTUALLY_THROTTLED; | |
940 | info->flags &= ~(THROTTLED | ACTUALLY_THROTTLED); | |
941 | spin_unlock_irqrestore(&info->lock, flags); | |
942 | ||
943 | if (actually_throttled) | |
944 | rx_data_softint(&info->rx_work); | |
945 | ||
946 | return; | |
947 | } | |
948 | ||
949 | ||
950 | /***************************************************************************** | |
951 | * Connect Tech's White Heat callback routines | |
952 | *****************************************************************************/ | |
953 | static void command_port_write_callback(struct urb *urb) | |
954 | { | |
955 | int status = urb->status; | |
956 | ||
957 | dbg("%s", __FUNCTION__); | |
958 | ||
959 | if (status) { | |
960 | dbg("nonzero urb status: %d", status); | |
961 | return; | |
962 | } | |
963 | } | |
964 | ||
965 | ||
966 | static void command_port_read_callback(struct urb *urb) | |
967 | { | |
968 | struct usb_serial_port *command_port = (struct usb_serial_port *)urb->context; | |
969 | struct whiteheat_command_private *command_info; | |
970 | int status = urb->status; | |
971 | unsigned char *data = urb->transfer_buffer; | |
972 | int result; | |
973 | ||
974 | dbg("%s", __FUNCTION__); | |
975 | ||
976 | command_info = usb_get_serial_port_data(command_port); | |
977 | if (!command_info) { | |
978 | dbg ("%s - command_info is NULL, exiting.", __FUNCTION__); | |
979 | return; | |
980 | } | |
981 | if (status) { | |
982 | dbg("%s - nonzero urb status: %d", __FUNCTION__, status); | |
983 | if (status != -ENOENT) | |
984 | command_info->command_finished = WHITEHEAT_CMD_FAILURE; | |
985 | wake_up(&command_info->wait_command); | |
986 | return; | |
987 | } | |
988 | ||
989 | usb_serial_debug_data(debug, &command_port->dev, __FUNCTION__, urb->actual_length, data); | |
990 | ||
991 | if (data[0] == WHITEHEAT_CMD_COMPLETE) { | |
992 | command_info->command_finished = WHITEHEAT_CMD_COMPLETE; | |
993 | wake_up(&command_info->wait_command); | |
994 | } else if (data[0] == WHITEHEAT_CMD_FAILURE) { | |
995 | command_info->command_finished = WHITEHEAT_CMD_FAILURE; | |
996 | wake_up(&command_info->wait_command); | |
997 | } else if (data[0] == WHITEHEAT_EVENT) { | |
998 | /* These are unsolicited reports from the firmware, hence no waiting command to wakeup */ | |
999 | dbg("%s - event received", __FUNCTION__); | |
1000 | } else if (data[0] == WHITEHEAT_GET_DTR_RTS) { | |
1001 | memcpy(command_info->result_buffer, &data[1], urb->actual_length - 1); | |
1002 | command_info->command_finished = WHITEHEAT_CMD_COMPLETE; | |
1003 | wake_up(&command_info->wait_command); | |
1004 | } else { | |
1005 | dbg("%s - bad reply from firmware", __FUNCTION__); | |
1006 | } | |
1007 | ||
1008 | /* Continue trying to always read */ | |
1009 | command_port->read_urb->dev = command_port->serial->dev; | |
1010 | result = usb_submit_urb(command_port->read_urb, GFP_ATOMIC); | |
1011 | if (result) | |
1012 | dbg("%s - failed resubmitting read urb, error %d", __FUNCTION__, result); | |
1013 | } | |
1014 | ||
1015 | ||
1016 | static void whiteheat_read_callback(struct urb *urb) | |
1017 | { | |
1018 | struct usb_serial_port *port = (struct usb_serial_port *)urb->context; | |
1019 | struct whiteheat_urb_wrap *wrap; | |
1020 | unsigned char *data = urb->transfer_buffer; | |
1021 | struct whiteheat_private *info = usb_get_serial_port_data(port); | |
1022 | int status = urb->status; | |
1023 | ||
1024 | dbg("%s - port %d", __FUNCTION__, port->number); | |
1025 | ||
1026 | spin_lock(&info->lock); | |
1027 | wrap = urb_to_wrap(urb, &info->rx_urbs_submitted); | |
1028 | if (!wrap) { | |
1029 | spin_unlock(&info->lock); | |
1030 | err("%s - Not my urb!", __FUNCTION__); | |
1031 | return; | |
1032 | } | |
1033 | list_del(&wrap->list); | |
1034 | spin_unlock(&info->lock); | |
1035 | ||
1036 | if (status) { | |
1037 | dbg("%s - nonzero read bulk status received: %d", | |
1038 | __FUNCTION__, status); | |
1039 | spin_lock(&info->lock); | |
1040 | list_add(&wrap->list, &info->rx_urbs_free); | |
1041 | spin_unlock(&info->lock); | |
1042 | return; | |
1043 | } | |
1044 | ||
1045 | usb_serial_debug_data(debug, &port->dev, __FUNCTION__, urb->actual_length, data); | |
1046 | ||
1047 | spin_lock(&info->lock); | |
1048 | list_add_tail(&wrap->list, &info->rx_urb_q); | |
1049 | if (info->flags & THROTTLED) { | |
1050 | info->flags |= ACTUALLY_THROTTLED; | |
1051 | spin_unlock(&info->lock); | |
1052 | return; | |
1053 | } | |
1054 | spin_unlock(&info->lock); | |
1055 | ||
1056 | schedule_work(&info->rx_work); | |
1057 | } | |
1058 | ||
1059 | ||
1060 | static void whiteheat_write_callback(struct urb *urb) | |
1061 | { | |
1062 | struct usb_serial_port *port = (struct usb_serial_port *)urb->context; | |
1063 | struct whiteheat_private *info = usb_get_serial_port_data(port); | |
1064 | struct whiteheat_urb_wrap *wrap; | |
1065 | int status = urb->status; | |
1066 | ||
1067 | dbg("%s - port %d", __FUNCTION__, port->number); | |
1068 | ||
1069 | spin_lock(&info->lock); | |
1070 | wrap = urb_to_wrap(urb, &info->tx_urbs_submitted); | |
1071 | if (!wrap) { | |
1072 | spin_unlock(&info->lock); | |
1073 | err("%s - Not my urb!", __FUNCTION__); | |
1074 | return; | |
1075 | } | |
1076 | list_move(&wrap->list, &info->tx_urbs_free); | |
1077 | spin_unlock(&info->lock); | |
1078 | ||
1079 | if (status) { | |
1080 | dbg("%s - nonzero write bulk status received: %d", | |
1081 | __FUNCTION__, status); | |
1082 | return; | |
1083 | } | |
1084 | ||
1085 | usb_serial_port_softint(port); | |
1086 | } | |
1087 | ||
1088 | ||
1089 | /***************************************************************************** | |
1090 | * Connect Tech's White Heat firmware interface | |
1091 | *****************************************************************************/ | |
1092 | static int firm_send_command(struct usb_serial_port *port, __u8 command, __u8 *data, __u8 datasize) | |
1093 | { | |
1094 | struct usb_serial_port *command_port; | |
1095 | struct whiteheat_command_private *command_info; | |
1096 | struct whiteheat_private *info; | |
1097 | __u8 *transfer_buffer; | |
1098 | int retval = 0; | |
1099 | int t; | |
1100 | ||
1101 | dbg("%s - command %d", __FUNCTION__, command); | |
1102 | ||
1103 | command_port = port->serial->port[COMMAND_PORT]; | |
1104 | command_info = usb_get_serial_port_data(command_port); | |
1105 | mutex_lock(&command_info->mutex); | |
1106 | command_info->command_finished = false; | |
1107 | ||
1108 | transfer_buffer = (__u8 *)command_port->write_urb->transfer_buffer; | |
1109 | transfer_buffer[0] = command; | |
1110 | memcpy (&transfer_buffer[1], data, datasize); | |
1111 | command_port->write_urb->transfer_buffer_length = datasize + 1; | |
1112 | command_port->write_urb->dev = port->serial->dev; | |
1113 | retval = usb_submit_urb (command_port->write_urb, GFP_NOIO); | |
1114 | if (retval) { | |
1115 | dbg("%s - submit urb failed", __FUNCTION__); | |
1116 | goto exit; | |
1117 | } | |
1118 | ||
1119 | /* wait for the command to complete */ | |
1120 | t = wait_event_timeout(command_info->wait_command, | |
1121 | (bool)command_info->command_finished, COMMAND_TIMEOUT); | |
1122 | if (!t) | |
1123 | usb_kill_urb(command_port->write_urb); | |
1124 | ||
1125 | if (command_info->command_finished == false) { | |
1126 | dbg("%s - command timed out.", __FUNCTION__); | |
1127 | retval = -ETIMEDOUT; | |
1128 | goto exit; | |
1129 | } | |
1130 | ||
1131 | if (command_info->command_finished == WHITEHEAT_CMD_FAILURE) { | |
1132 | dbg("%s - command failed.", __FUNCTION__); | |
1133 | retval = -EIO; | |
1134 | goto exit; | |
1135 | } | |
1136 | ||
1137 | if (command_info->command_finished == WHITEHEAT_CMD_COMPLETE) { | |
1138 | dbg("%s - command completed.", __FUNCTION__); | |
1139 | switch (command) { | |
1140 | case WHITEHEAT_GET_DTR_RTS: | |
1141 | info = usb_get_serial_port_data(port); | |
1142 | memcpy(&info->mcr, command_info->result_buffer, sizeof(struct whiteheat_dr_info)); | |
1143 | break; | |
1144 | } | |
1145 | } | |
1146 | ||
1147 | exit: | |
1148 | mutex_unlock(&command_info->mutex); | |
1149 | return retval; | |
1150 | } | |
1151 | ||
1152 | ||
1153 | static int firm_open(struct usb_serial_port *port) { | |
1154 | struct whiteheat_simple open_command; | |
1155 | ||
1156 | open_command.port = port->number - port->serial->minor + 1; | |
1157 | return firm_send_command(port, WHITEHEAT_OPEN, (__u8 *)&open_command, sizeof(open_command)); | |
1158 | } | |
1159 | ||
1160 | ||
1161 | static int firm_close(struct usb_serial_port *port) { | |
1162 | struct whiteheat_simple close_command; | |
1163 | ||
1164 | close_command.port = port->number - port->serial->minor + 1; | |
1165 | return firm_send_command(port, WHITEHEAT_CLOSE, (__u8 *)&close_command, sizeof(close_command)); | |
1166 | } | |
1167 | ||
1168 | ||
1169 | static int firm_setup_port(struct usb_serial_port *port) { | |
1170 | struct whiteheat_port_settings port_settings; | |
1171 | unsigned int cflag = port->tty->termios->c_cflag; | |
1172 | ||
1173 | port_settings.port = port->number + 1; | |
1174 | ||
1175 | /* get the byte size */ | |
1176 | switch (cflag & CSIZE) { | |
1177 | case CS5: port_settings.bits = 5; break; | |
1178 | case CS6: port_settings.bits = 6; break; | |
1179 | case CS7: port_settings.bits = 7; break; | |
1180 | default: | |
1181 | case CS8: port_settings.bits = 8; break; | |
1182 | } | |
1183 | dbg("%s - data bits = %d", __FUNCTION__, port_settings.bits); | |
1184 | ||
1185 | /* determine the parity */ | |
1186 | if (cflag & PARENB) | |
1187 | if (cflag & CMSPAR) | |
1188 | if (cflag & PARODD) | |
1189 | port_settings.parity = WHITEHEAT_PAR_MARK; | |
1190 | else | |
1191 | port_settings.parity = WHITEHEAT_PAR_SPACE; | |
1192 | else | |
1193 | if (cflag & PARODD) | |
1194 | port_settings.parity = WHITEHEAT_PAR_ODD; | |
1195 | else | |
1196 | port_settings.parity = WHITEHEAT_PAR_EVEN; | |
1197 | else | |
1198 | port_settings.parity = WHITEHEAT_PAR_NONE; | |
1199 | dbg("%s - parity = %c", __FUNCTION__, port_settings.parity); | |
1200 | ||
1201 | /* figure out the stop bits requested */ | |
1202 | if (cflag & CSTOPB) | |
1203 | port_settings.stop = 2; | |
1204 | else | |
1205 | port_settings.stop = 1; | |
1206 | dbg("%s - stop bits = %d", __FUNCTION__, port_settings.stop); | |
1207 | ||
1208 | /* figure out the flow control settings */ | |
1209 | if (cflag & CRTSCTS) | |
1210 | port_settings.hflow = (WHITEHEAT_HFLOW_CTS | WHITEHEAT_HFLOW_RTS); | |
1211 | else | |
1212 | port_settings.hflow = WHITEHEAT_HFLOW_NONE; | |
1213 | dbg("%s - hardware flow control = %s %s %s %s", __FUNCTION__, | |
1214 | (port_settings.hflow & WHITEHEAT_HFLOW_CTS) ? "CTS" : "", | |
1215 | (port_settings.hflow & WHITEHEAT_HFLOW_RTS) ? "RTS" : "", | |
1216 | (port_settings.hflow & WHITEHEAT_HFLOW_DSR) ? "DSR" : "", | |
1217 | (port_settings.hflow & WHITEHEAT_HFLOW_DTR) ? "DTR" : ""); | |
1218 | ||
1219 | /* determine software flow control */ | |
1220 | if (I_IXOFF(port->tty)) | |
1221 | port_settings.sflow = WHITEHEAT_SFLOW_RXTX; | |
1222 | else | |
1223 | port_settings.sflow = WHITEHEAT_SFLOW_NONE; | |
1224 | dbg("%s - software flow control = %c", __FUNCTION__, port_settings.sflow); | |
1225 | ||
1226 | port_settings.xon = START_CHAR(port->tty); | |
1227 | port_settings.xoff = STOP_CHAR(port->tty); | |
1228 | dbg("%s - XON = %2x, XOFF = %2x", __FUNCTION__, port_settings.xon, port_settings.xoff); | |
1229 | ||
1230 | /* get the baud rate wanted */ | |
1231 | port_settings.baud = tty_get_baud_rate(port->tty); | |
1232 | dbg("%s - baud rate = %d", __FUNCTION__, port_settings.baud); | |
1233 | ||
1234 | /* fixme: should set validated settings */ | |
1235 | tty_encode_baud_rate(port->tty, port_settings.baud, port_settings.baud); | |
1236 | /* handle any settings that aren't specified in the tty structure */ | |
1237 | port_settings.lloop = 0; | |
1238 | ||
1239 | /* now send the message to the device */ | |
1240 | return firm_send_command(port, WHITEHEAT_SETUP_PORT, (__u8 *)&port_settings, sizeof(port_settings)); | |
1241 | } | |
1242 | ||
1243 | ||
1244 | static int firm_set_rts(struct usb_serial_port *port, __u8 onoff) { | |
1245 | struct whiteheat_set_rdb rts_command; | |
1246 | ||
1247 | rts_command.port = port->number - port->serial->minor + 1; | |
1248 | rts_command.state = onoff; | |
1249 | return firm_send_command(port, WHITEHEAT_SET_RTS, (__u8 *)&rts_command, sizeof(rts_command)); | |
1250 | } | |
1251 | ||
1252 | ||
1253 | static int firm_set_dtr(struct usb_serial_port *port, __u8 onoff) { | |
1254 | struct whiteheat_set_rdb dtr_command; | |
1255 | ||
1256 | dtr_command.port = port->number - port->serial->minor + 1; | |
1257 | dtr_command.state = onoff; | |
1258 | return firm_send_command(port, WHITEHEAT_SET_RTS, (__u8 *)&dtr_command, sizeof(dtr_command)); | |
1259 | } | |
1260 | ||
1261 | ||
1262 | static int firm_set_break(struct usb_serial_port *port, __u8 onoff) { | |
1263 | struct whiteheat_set_rdb break_command; | |
1264 | ||
1265 | break_command.port = port->number - port->serial->minor + 1; | |
1266 | break_command.state = onoff; | |
1267 | return firm_send_command(port, WHITEHEAT_SET_RTS, (__u8 *)&break_command, sizeof(break_command)); | |
1268 | } | |
1269 | ||
1270 | ||
1271 | static int firm_purge(struct usb_serial_port *port, __u8 rxtx) { | |
1272 | struct whiteheat_purge purge_command; | |
1273 | ||
1274 | purge_command.port = port->number - port->serial->minor + 1; | |
1275 | purge_command.what = rxtx; | |
1276 | return firm_send_command(port, WHITEHEAT_PURGE, (__u8 *)&purge_command, sizeof(purge_command)); | |
1277 | } | |
1278 | ||
1279 | ||
1280 | static int firm_get_dtr_rts(struct usb_serial_port *port) { | |
1281 | struct whiteheat_simple get_dr_command; | |
1282 | ||
1283 | get_dr_command.port = port->number - port->serial->minor + 1; | |
1284 | return firm_send_command(port, WHITEHEAT_GET_DTR_RTS, (__u8 *)&get_dr_command, sizeof(get_dr_command)); | |
1285 | } | |
1286 | ||
1287 | ||
1288 | static int firm_report_tx_done(struct usb_serial_port *port) { | |
1289 | struct whiteheat_simple close_command; | |
1290 | ||
1291 | close_command.port = port->number - port->serial->minor + 1; | |
1292 | return firm_send_command(port, WHITEHEAT_REPORT_TX_DONE, (__u8 *)&close_command, sizeof(close_command)); | |
1293 | } | |
1294 | ||
1295 | ||
1296 | /***************************************************************************** | |
1297 | * Connect Tech's White Heat utility functions | |
1298 | *****************************************************************************/ | |
1299 | static int start_command_port(struct usb_serial *serial) | |
1300 | { | |
1301 | struct usb_serial_port *command_port; | |
1302 | struct whiteheat_command_private *command_info; | |
1303 | int retval = 0; | |
1304 | ||
1305 | command_port = serial->port[COMMAND_PORT]; | |
1306 | command_info = usb_get_serial_port_data(command_port); | |
1307 | mutex_lock(&command_info->mutex); | |
1308 | if (!command_info->port_running) { | |
1309 | /* Work around HCD bugs */ | |
1310 | usb_clear_halt(serial->dev, command_port->read_urb->pipe); | |
1311 | ||
1312 | command_port->read_urb->dev = serial->dev; | |
1313 | retval = usb_submit_urb(command_port->read_urb, GFP_KERNEL); | |
1314 | if (retval) { | |
1315 | err("%s - failed submitting read urb, error %d", __FUNCTION__, retval); | |
1316 | goto exit; | |
1317 | } | |
1318 | } | |
1319 | command_info->port_running++; | |
1320 | ||
1321 | exit: | |
1322 | mutex_unlock(&command_info->mutex); | |
1323 | return retval; | |
1324 | } | |
1325 | ||
1326 | ||
1327 | static void stop_command_port(struct usb_serial *serial) | |
1328 | { | |
1329 | struct usb_serial_port *command_port; | |
1330 | struct whiteheat_command_private *command_info; | |
1331 | ||
1332 | command_port = serial->port[COMMAND_PORT]; | |
1333 | command_info = usb_get_serial_port_data(command_port); | |
1334 | mutex_lock(&command_info->mutex); | |
1335 | command_info->port_running--; | |
1336 | if (!command_info->port_running) | |
1337 | usb_kill_urb(command_port->read_urb); | |
1338 | mutex_unlock(&command_info->mutex); | |
1339 | } | |
1340 | ||
1341 | ||
1342 | static int start_port_read(struct usb_serial_port *port) | |
1343 | { | |
1344 | struct whiteheat_private *info = usb_get_serial_port_data(port); | |
1345 | struct whiteheat_urb_wrap *wrap; | |
1346 | struct urb *urb; | |
1347 | int retval = 0; | |
1348 | unsigned long flags; | |
1349 | struct list_head *tmp; | |
1350 | struct list_head *tmp2; | |
1351 | ||
1352 | spin_lock_irqsave(&info->lock, flags); | |
1353 | ||
1354 | list_for_each_safe(tmp, tmp2, &info->rx_urbs_free) { | |
1355 | list_del(tmp); | |
1356 | wrap = list_entry(tmp, struct whiteheat_urb_wrap, list); | |
1357 | urb = wrap->urb; | |
1358 | urb->dev = port->serial->dev; | |
1359 | spin_unlock_irqrestore(&info->lock, flags); | |
1360 | retval = usb_submit_urb(urb, GFP_KERNEL); | |
1361 | if (retval) { | |
1362 | spin_lock_irqsave(&info->lock, flags); | |
1363 | list_add(tmp, &info->rx_urbs_free); | |
1364 | list_for_each_safe(tmp, tmp2, &info->rx_urbs_submitted) { | |
1365 | wrap = list_entry(tmp, struct whiteheat_urb_wrap, list); | |
1366 | urb = wrap->urb; | |
1367 | list_del(tmp); | |
1368 | spin_unlock_irqrestore(&info->lock, flags); | |
1369 | usb_kill_urb(urb); | |
1370 | spin_lock_irqsave(&info->lock, flags); | |
1371 | list_add(tmp, &info->rx_urbs_free); | |
1372 | } | |
1373 | break; | |
1374 | } | |
1375 | spin_lock_irqsave(&info->lock, flags); | |
1376 | list_add(tmp, &info->rx_urbs_submitted); | |
1377 | } | |
1378 | ||
1379 | spin_unlock_irqrestore(&info->lock, flags); | |
1380 | ||
1381 | return retval; | |
1382 | } | |
1383 | ||
1384 | ||
1385 | static struct whiteheat_urb_wrap *urb_to_wrap(struct urb* urb, struct list_head *head) | |
1386 | { | |
1387 | struct whiteheat_urb_wrap *wrap; | |
1388 | struct list_head *tmp; | |
1389 | ||
1390 | list_for_each(tmp, head) { | |
1391 | wrap = list_entry(tmp, struct whiteheat_urb_wrap, list); | |
1392 | if (wrap->urb == urb) | |
1393 | return wrap; | |
1394 | } | |
1395 | ||
1396 | return NULL; | |
1397 | } | |
1398 | ||
1399 | ||
1400 | static struct list_head *list_first(struct list_head *head) | |
1401 | { | |
1402 | return head->next; | |
1403 | } | |
1404 | ||
1405 | ||
1406 | static void rx_data_softint(struct work_struct *work) | |
1407 | { | |
1408 | struct whiteheat_private *info = | |
1409 | container_of(work, struct whiteheat_private, rx_work); | |
1410 | struct usb_serial_port *port = info->port; | |
1411 | struct tty_struct *tty = port->tty; | |
1412 | struct whiteheat_urb_wrap *wrap; | |
1413 | struct urb *urb; | |
1414 | unsigned long flags; | |
1415 | struct list_head *tmp; | |
1416 | struct list_head *tmp2; | |
1417 | int result; | |
1418 | int sent = 0; | |
1419 | ||
1420 | spin_lock_irqsave(&info->lock, flags); | |
1421 | if (info->flags & THROTTLED) { | |
1422 | spin_unlock_irqrestore(&info->lock, flags); | |
1423 | return; | |
1424 | } | |
1425 | ||
1426 | list_for_each_safe(tmp, tmp2, &info->rx_urb_q) { | |
1427 | list_del(tmp); | |
1428 | spin_unlock_irqrestore(&info->lock, flags); | |
1429 | ||
1430 | wrap = list_entry(tmp, struct whiteheat_urb_wrap, list); | |
1431 | urb = wrap->urb; | |
1432 | ||
1433 | if (tty && urb->actual_length) { | |
1434 | int len = tty_buffer_request_room(tty, urb->actual_length); | |
1435 | /* This stuff can go away now I suspect */ | |
1436 | if (unlikely(len < urb->actual_length)) { | |
1437 | spin_lock_irqsave(&info->lock, flags); | |
1438 | list_add(tmp, &info->rx_urb_q); | |
1439 | spin_unlock_irqrestore(&info->lock, flags); | |
1440 | tty_flip_buffer_push(tty); | |
1441 | schedule_work(&info->rx_work); | |
1442 | return; | |
1443 | } | |
1444 | tty_insert_flip_string(tty, urb->transfer_buffer, len); | |
1445 | sent += len; | |
1446 | } | |
1447 | ||
1448 | urb->dev = port->serial->dev; | |
1449 | result = usb_submit_urb(urb, GFP_ATOMIC); | |
1450 | if (result) { | |
1451 | err("%s - failed resubmitting read urb, error %d", __FUNCTION__, result); | |
1452 | spin_lock_irqsave(&info->lock, flags); | |
1453 | list_add(tmp, &info->rx_urbs_free); | |
1454 | continue; | |
1455 | } | |
1456 | ||
1457 | spin_lock_irqsave(&info->lock, flags); | |
1458 | list_add(tmp, &info->rx_urbs_submitted); | |
1459 | } | |
1460 | spin_unlock_irqrestore(&info->lock, flags); | |
1461 | ||
1462 | if (sent) | |
1463 | tty_flip_buffer_push(tty); | |
1464 | } | |
1465 | ||
1466 | ||
1467 | /***************************************************************************** | |
1468 | * Connect Tech's White Heat module functions | |
1469 | *****************************************************************************/ | |
1470 | static int __init whiteheat_init (void) | |
1471 | { | |
1472 | int retval; | |
1473 | retval = usb_serial_register(&whiteheat_fake_device); | |
1474 | if (retval) | |
1475 | goto failed_fake_register; | |
1476 | retval = usb_serial_register(&whiteheat_device); | |
1477 | if (retval) | |
1478 | goto failed_device_register; | |
1479 | retval = usb_register(&whiteheat_driver); | |
1480 | if (retval) | |
1481 | goto failed_usb_register; | |
1482 | info(DRIVER_DESC " " DRIVER_VERSION); | |
1483 | return 0; | |
1484 | failed_usb_register: | |
1485 | usb_serial_deregister(&whiteheat_device); | |
1486 | failed_device_register: | |
1487 | usb_serial_deregister(&whiteheat_fake_device); | |
1488 | failed_fake_register: | |
1489 | return retval; | |
1490 | } | |
1491 | ||
1492 | ||
1493 | static void __exit whiteheat_exit (void) | |
1494 | { | |
1495 | usb_deregister (&whiteheat_driver); | |
1496 | usb_serial_deregister (&whiteheat_fake_device); | |
1497 | usb_serial_deregister (&whiteheat_device); | |
1498 | } | |
1499 | ||
1500 | ||
1501 | module_init(whiteheat_init); | |
1502 | module_exit(whiteheat_exit); | |
1503 | ||
1504 | MODULE_AUTHOR( DRIVER_AUTHOR ); | |
1505 | MODULE_DESCRIPTION( DRIVER_DESC ); | |
1506 | MODULE_LICENSE("GPL"); | |
1507 | ||
1508 | module_param(urb_pool_size, int, 0); | |
1509 | MODULE_PARM_DESC(urb_pool_size, "Number of urbs to use for buffering"); | |
1510 | ||
1511 | module_param(debug, bool, S_IRUGO | S_IWUSR); | |
1512 | MODULE_PARM_DESC(debug, "Debug enabled or not"); |