Commit | Line | Data |
---|---|---|
1da177e4 LT |
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 | * | |
80359a9c AC |
15 | * See Documentation/usb/usb-serial.txt for more information on using this |
16 | * driver | |
1da177e4 LT |
17 | * |
18 | * (10/09/2002) Stuart MacDonald (stuartm@connecttech.com) | |
19 | * Upgrade to full working driver | |
20 | * | |
21 | * (05/30/2001) gkh | |
80359a9c AC |
22 | * switched from using spinlock to a semaphore, which fixes lots of |
23 | * problems. | |
1da177e4 LT |
24 | * |
25 | * (04/08/2001) gb | |
26 | * Identify version on module load. | |
80359a9c | 27 | * |
1da177e4 | 28 | * 2001_Mar_19 gkh |
80359a9c | 29 | * Fixed MOD_INC and MOD_DEC logic, the ability to open a port more |
1da177e4 LT |
30 | * than once, and the got the proper usb_device_id table entries so |
31 | * the driver works again. | |
32 | * | |
33 | * (11/01/2000) Adam J. Richter | |
34 | * usb_device_id table support | |
80359a9c | 35 | * |
1da177e4 LT |
36 | * (10/05/2000) gkh |
37 | * Fixed bug with urb->dev not being set properly, now that the usb | |
38 | * core needs it. | |
80359a9c | 39 | * |
1da177e4 LT |
40 | * (10/03/2000) smd |
41 | * firmware is improved to guard against crap sent to device | |
42 | * firmware now replies CMD_FAILURE on bad things | |
43 | * read_callback fix you provided for private info struct | |
44 | * command_finished now indicates success or fail | |
45 | * setup_port struct now packed to avoid gcc padding | |
46 | * firmware uses 1 based port numbering, driver now handles that | |
47 | * | |
48 | * (09/11/2000) gkh | |
49 | * Removed DEBUG #ifdefs with call to usb_serial_debug_data | |
50 | * | |
51 | * (07/19/2000) gkh | |
52 | * Added module_init and module_exit functions to handle the fact that this | |
53 | * driver is a loadable module now. | |
54 | * Fixed bug with port->minor that was found by Al Borchers | |
55 | * | |
56 | * (07/04/2000) gkh | |
80359a9c AC |
57 | * Added support for port settings. Baud rate can now be changed. Line |
58 | * signals are not transferred to and from the tty layer yet, but things | |
59 | * seem to be working well now. | |
1da177e4 LT |
60 | * |
61 | * (05/04/2000) gkh | |
62 | * First cut at open and close commands. Data can flow through the ports at | |
63 | * default speeds now. | |
64 | * | |
65 | * (03/26/2000) gkh | |
66 | * Split driver up into device specific pieces. | |
80359a9c | 67 | * |
1da177e4 LT |
68 | */ |
69 | ||
1da177e4 LT |
70 | #include <linux/kernel.h> |
71 | #include <linux/errno.h> | |
72 | #include <linux/init.h> | |
73 | #include <linux/slab.h> | |
74 | #include <linux/tty.h> | |
75 | #include <linux/tty_driver.h> | |
76 | #include <linux/tty_flip.h> | |
77 | #include <linux/module.h> | |
78 | #include <linux/spinlock.h> | |
08a2b3b6 | 79 | #include <linux/mutex.h> |
80359a9c | 80 | #include <linux/uaccess.h> |
1da177e4 LT |
81 | #include <asm/termbits.h> |
82 | #include <linux/usb.h> | |
83 | #include <linux/serial_reg.h> | |
84 | #include <linux/serial.h> | |
a969888c | 85 | #include <linux/usb/serial.h> |
ec6752f5 DW |
86 | #include <linux/firmware.h> |
87 | #include <linux/ihex.h> | |
1da177e4 LT |
88 | #include "whiteheat.h" /* WhiteHEAT specific commands */ |
89 | ||
90 | static int debug; | |
91 | ||
92 | #ifndef CMSPAR | |
93 | #define CMSPAR 0 | |
94 | #endif | |
95 | ||
96 | /* | |
97 | * Version Information | |
98 | */ | |
99 | #define DRIVER_VERSION "v2.0" | |
100 | #define DRIVER_AUTHOR "Greg Kroah-Hartman <greg@kroah.com>, Stuart MacDonald <stuartm@connecttech.com>" | |
101 | #define DRIVER_DESC "USB ConnectTech WhiteHEAT driver" | |
102 | ||
103 | #define CONNECT_TECH_VENDOR_ID 0x0710 | |
104 | #define CONNECT_TECH_FAKE_WHITE_HEAT_ID 0x0001 | |
105 | #define CONNECT_TECH_WHITE_HEAT_ID 0x8001 | |
106 | ||
107 | /* | |
108 | ID tables for whiteheat are unusual, because we want to different | |
109 | things for different versions of the device. Eventually, this | |
110 | will be doable from a single table. But, for now, we define two | |
111 | separate ID tables, and then a third table that combines them | |
112 | just for the purpose of exporting the autoloading information. | |
113 | */ | |
114 | static struct usb_device_id id_table_std [] = { | |
115 | { USB_DEVICE(CONNECT_TECH_VENDOR_ID, CONNECT_TECH_WHITE_HEAT_ID) }, | |
116 | { } /* Terminating entry */ | |
117 | }; | |
118 | ||
119 | static struct usb_device_id id_table_prerenumeration [] = { | |
120 | { USB_DEVICE(CONNECT_TECH_VENDOR_ID, CONNECT_TECH_FAKE_WHITE_HEAT_ID) }, | |
121 | { } /* Terminating entry */ | |
122 | }; | |
123 | ||
124 | static struct usb_device_id id_table_combined [] = { | |
125 | { USB_DEVICE(CONNECT_TECH_VENDOR_ID, CONNECT_TECH_WHITE_HEAT_ID) }, | |
126 | { USB_DEVICE(CONNECT_TECH_VENDOR_ID, CONNECT_TECH_FAKE_WHITE_HEAT_ID) }, | |
127 | { } /* Terminating entry */ | |
128 | }; | |
129 | ||
80359a9c | 130 | MODULE_DEVICE_TABLE(usb, id_table_combined); |
1da177e4 LT |
131 | |
132 | static struct usb_driver whiteheat_driver = { | |
1da177e4 LT |
133 | .name = "whiteheat", |
134 | .probe = usb_serial_probe, | |
135 | .disconnect = usb_serial_disconnect, | |
136 | .id_table = id_table_combined, | |
ba9dc657 | 137 | .no_dynamic_id = 1, |
1da177e4 LT |
138 | }; |
139 | ||
140 | /* function prototypes for the Connect Tech WhiteHEAT prerenumeration device */ | |
80359a9c AC |
141 | static int whiteheat_firmware_download(struct usb_serial *serial, |
142 | const struct usb_device_id *id); | |
143 | static int whiteheat_firmware_attach(struct usb_serial *serial); | |
1da177e4 LT |
144 | |
145 | /* function prototypes for the Connect Tech WhiteHEAT serial converter */ | |
80359a9c | 146 | static int whiteheat_attach(struct usb_serial *serial); |
f9c99bb8 | 147 | static void whiteheat_release(struct usb_serial *serial); |
80359a9c | 148 | static int whiteheat_open(struct tty_struct *tty, |
a509a7e4 | 149 | struct usb_serial_port *port); |
335f8514 | 150 | static void whiteheat_close(struct usb_serial_port *port); |
80359a9c AC |
151 | static int whiteheat_write(struct tty_struct *tty, |
152 | struct usb_serial_port *port, | |
153 | const unsigned char *buf, int count); | |
154 | static int whiteheat_write_room(struct tty_struct *tty); | |
155 | static int whiteheat_ioctl(struct tty_struct *tty, struct file *file, | |
156 | unsigned int cmd, unsigned long arg); | |
157 | static void whiteheat_set_termios(struct tty_struct *tty, | |
158 | struct usb_serial_port *port, struct ktermios *old); | |
159 | static int whiteheat_tiocmget(struct tty_struct *tty, struct file *file); | |
160 | static int whiteheat_tiocmset(struct tty_struct *tty, struct file *file, | |
161 | unsigned int set, unsigned int clear); | |
162 | static void whiteheat_break_ctl(struct tty_struct *tty, int break_state); | |
163 | static int whiteheat_chars_in_buffer(struct tty_struct *tty); | |
164 | static void whiteheat_throttle(struct tty_struct *tty); | |
165 | static void whiteheat_unthrottle(struct tty_struct *tty); | |
166 | static void whiteheat_read_callback(struct urb *urb); | |
167 | static void whiteheat_write_callback(struct urb *urb); | |
1da177e4 | 168 | |
ea65370d | 169 | static struct usb_serial_driver whiteheat_fake_device = { |
18fcac35 GKH |
170 | .driver = { |
171 | .owner = THIS_MODULE, | |
269bda1c | 172 | .name = "whiteheatnofirm", |
18fcac35 | 173 | }, |
269bda1c | 174 | .description = "Connect Tech - WhiteHEAT - (prerenumeration)", |
d9b1b787 | 175 | .usb_driver = &whiteheat_driver, |
1da177e4 | 176 | .id_table = id_table_prerenumeration, |
1da177e4 LT |
177 | .num_ports = 1, |
178 | .probe = whiteheat_firmware_download, | |
179 | .attach = whiteheat_firmware_attach, | |
180 | }; | |
181 | ||
ea65370d | 182 | static struct usb_serial_driver whiteheat_device = { |
18fcac35 GKH |
183 | .driver = { |
184 | .owner = THIS_MODULE, | |
269bda1c | 185 | .name = "whiteheat", |
18fcac35 | 186 | }, |
269bda1c | 187 | .description = "Connect Tech - WhiteHEAT", |
d9b1b787 | 188 | .usb_driver = &whiteheat_driver, |
1da177e4 | 189 | .id_table = id_table_std, |
1da177e4 LT |
190 | .num_ports = 4, |
191 | .attach = whiteheat_attach, | |
f9c99bb8 | 192 | .release = whiteheat_release, |
1da177e4 LT |
193 | .open = whiteheat_open, |
194 | .close = whiteheat_close, | |
195 | .write = whiteheat_write, | |
196 | .write_room = whiteheat_write_room, | |
197 | .ioctl = whiteheat_ioctl, | |
198 | .set_termios = whiteheat_set_termios, | |
199 | .break_ctl = whiteheat_break_ctl, | |
200 | .tiocmget = whiteheat_tiocmget, | |
201 | .tiocmset = whiteheat_tiocmset, | |
202 | .chars_in_buffer = whiteheat_chars_in_buffer, | |
203 | .throttle = whiteheat_throttle, | |
204 | .unthrottle = whiteheat_unthrottle, | |
205 | .read_bulk_callback = whiteheat_read_callback, | |
206 | .write_bulk_callback = whiteheat_write_callback, | |
207 | }; | |
208 | ||
209 | ||
210 | struct whiteheat_command_private { | |
08a2b3b6 | 211 | struct mutex mutex; |
1da177e4 LT |
212 | __u8 port_running; |
213 | __u8 command_finished; | |
80359a9c AC |
214 | wait_queue_head_t wait_command; /* for handling sleeping whilst |
215 | waiting for a command to | |
216 | finish */ | |
1da177e4 LT |
217 | __u8 result_buffer[64]; |
218 | }; | |
219 | ||
220 | ||
221 | #define THROTTLED 0x01 | |
222 | #define ACTUALLY_THROTTLED 0x02 | |
223 | ||
224 | static int urb_pool_size = 8; | |
225 | ||
226 | struct whiteheat_urb_wrap { | |
227 | struct list_head list; | |
228 | struct urb *urb; | |
229 | }; | |
230 | ||
231 | struct whiteheat_private { | |
232 | spinlock_t lock; | |
233 | __u8 flags; | |
a5b6f60c | 234 | __u8 mcr; /* FIXME: no locking on mcr */ |
1da177e4 LT |
235 | struct list_head rx_urbs_free; |
236 | struct list_head rx_urbs_submitted; | |
237 | struct list_head rx_urb_q; | |
238 | struct work_struct rx_work; | |
c4028958 | 239 | struct usb_serial_port *port; |
1da177e4 LT |
240 | struct list_head tx_urbs_free; |
241 | struct list_head tx_urbs_submitted; | |
08a2b3b6 | 242 | struct mutex deathwarrant; |
1da177e4 LT |
243 | }; |
244 | ||
245 | ||
246 | /* local function prototypes */ | |
247 | static int start_command_port(struct usb_serial *serial); | |
248 | static void stop_command_port(struct usb_serial *serial); | |
7d12e780 DH |
249 | static void command_port_write_callback(struct urb *urb); |
250 | static void command_port_read_callback(struct urb *urb); | |
1da177e4 LT |
251 | |
252 | static int start_port_read(struct usb_serial_port *port); | |
80359a9c AC |
253 | static struct whiteheat_urb_wrap *urb_to_wrap(struct urb *urb, |
254 | struct list_head *head); | |
1da177e4 | 255 | static struct list_head *list_first(struct list_head *head); |
c4028958 | 256 | static void rx_data_softint(struct work_struct *work); |
1da177e4 | 257 | |
80359a9c AC |
258 | static int firm_send_command(struct usb_serial_port *port, __u8 command, |
259 | __u8 *data, __u8 datasize); | |
1da177e4 LT |
260 | static int firm_open(struct usb_serial_port *port); |
261 | static int firm_close(struct usb_serial_port *port); | |
fe1ae7fd | 262 | static void firm_setup_port(struct tty_struct *tty); |
1da177e4 LT |
263 | static int firm_set_rts(struct usb_serial_port *port, __u8 onoff); |
264 | static int firm_set_dtr(struct usb_serial_port *port, __u8 onoff); | |
265 | static int firm_set_break(struct usb_serial_port *port, __u8 onoff); | |
266 | static int firm_purge(struct usb_serial_port *port, __u8 rxtx); | |
267 | static int firm_get_dtr_rts(struct usb_serial_port *port); | |
268 | static int firm_report_tx_done(struct usb_serial_port *port); | |
269 | ||
270 | ||
271 | #define COMMAND_PORT 4 | |
272 | #define COMMAND_TIMEOUT (2*HZ) /* 2 second timeout for a command */ | |
273 | #define COMMAND_TIMEOUT_MS 2000 | |
274 | #define CLOSING_DELAY (30 * HZ) | |
275 | ||
276 | ||
277 | /***************************************************************************** | |
278 | * Connect Tech's White Heat prerenumeration driver functions | |
279 | *****************************************************************************/ | |
280 | ||
281 | /* steps to download the firmware to the WhiteHEAT device: | |
282 | - hold the reset (by writing to the reset bit of the CPUCS register) | |
283 | - download the VEND_AX.HEX file to the chip using VENDOR_REQUEST-ANCHOR_LOAD | |
284 | - release the reset (by writing to the CPUCS register) | |
285 | - download the WH.HEX file for all addresses greater than 0x1b3f using | |
286 | VENDOR_REQUEST-ANCHOR_EXTERNAL_RAM_LOAD | |
287 | - hold the reset | |
288 | - download the WH.HEX file for all addresses less than 0x1b40 using | |
289 | VENDOR_REQUEST_ANCHOR_LOAD | |
290 | - release the reset | |
291 | - device renumerated itself and comes up as new device id with all | |
292 | firmware download completed. | |
293 | */ | |
80359a9c AC |
294 | static int whiteheat_firmware_download(struct usb_serial *serial, |
295 | const struct usb_device_id *id) | |
1da177e4 | 296 | { |
ec6752f5 DW |
297 | int response, ret = -ENOENT; |
298 | const struct firmware *loader_fw = NULL, *firmware_fw = NULL; | |
299 | const struct ihex_binrec *record; | |
300 | ||
441b62c1 | 301 | dbg("%s", __func__); |
ec6752f5 DW |
302 | |
303 | if (request_ihex_firmware(&firmware_fw, "whiteheat.fw", | |
304 | &serial->dev->dev)) { | |
194343d9 GKH |
305 | dev_err(&serial->dev->dev, |
306 | "%s - request \"whiteheat.fw\" failed\n", __func__); | |
ec6752f5 DW |
307 | goto out; |
308 | } | |
309 | if (request_ihex_firmware(&loader_fw, "whiteheat_loader.fw", | |
310 | &serial->dev->dev)) { | |
194343d9 GKH |
311 | dev_err(&serial->dev->dev, |
312 | "%s - request \"whiteheat_loader.fw\" failed\n", | |
313 | __func__); | |
ec6752f5 DW |
314 | goto out; |
315 | } | |
316 | ret = 0; | |
1da177e4 LT |
317 | response = ezusb_set_reset (serial, 1); |
318 | ||
ec6752f5 DW |
319 | record = (const struct ihex_binrec *)loader_fw->data; |
320 | while (record) { | |
321 | response = ezusb_writememory (serial, be32_to_cpu(record->addr), | |
322 | (unsigned char *)record->data, | |
323 | be16_to_cpu(record->len), 0xa0); | |
1da177e4 | 324 | if (response < 0) { |
194343d9 GKH |
325 | dev_err(&serial->dev->dev, "%s - ezusb_writememory " |
326 | "failed for loader (%d %04X %p %d)\n", | |
327 | __func__, response, be32_to_cpu(record->addr), | |
328 | record->data, be16_to_cpu(record->len)); | |
1da177e4 LT |
329 | break; |
330 | } | |
ec6752f5 | 331 | record = ihex_next_binrec(record); |
1da177e4 LT |
332 | } |
333 | ||
80359a9c | 334 | response = ezusb_set_reset(serial, 0); |
1da177e4 | 335 | |
ec6752f5 DW |
336 | record = (const struct ihex_binrec *)firmware_fw->data; |
337 | while (record && be32_to_cpu(record->addr) < 0x1b40) | |
338 | record = ihex_next_binrec(record); | |
339 | while (record) { | |
340 | response = ezusb_writememory (serial, be32_to_cpu(record->addr), | |
341 | (unsigned char *)record->data, | |
342 | be16_to_cpu(record->len), 0xa3); | |
1da177e4 | 343 | if (response < 0) { |
194343d9 GKH |
344 | dev_err(&serial->dev->dev, "%s - ezusb_writememory " |
345 | "failed for first firmware step " | |
346 | "(%d %04X %p %d)\n", __func__, response, | |
347 | be32_to_cpu(record->addr), record->data, | |
348 | be16_to_cpu(record->len)); | |
1da177e4 LT |
349 | break; |
350 | } | |
351 | ++record; | |
352 | } | |
80359a9c AC |
353 | |
354 | response = ezusb_set_reset(serial, 1); | |
1da177e4 | 355 | |
ec6752f5 DW |
356 | record = (const struct ihex_binrec *)firmware_fw->data; |
357 | while (record && be32_to_cpu(record->addr) < 0x1b40) { | |
358 | response = ezusb_writememory (serial, be32_to_cpu(record->addr), | |
359 | (unsigned char *)record->data, | |
360 | be16_to_cpu(record->len), 0xa0); | |
1da177e4 | 361 | if (response < 0) { |
194343d9 GKH |
362 | dev_err(&serial->dev->dev, "%s - ezusb_writememory " |
363 | "failed for second firmware step " | |
364 | "(%d %04X %p %d)\n", __func__, response, | |
365 | be32_to_cpu(record->addr), record->data, | |
366 | be16_to_cpu(record->len)); | |
1da177e4 LT |
367 | break; |
368 | } | |
369 | ++record; | |
370 | } | |
ec6752f5 | 371 | ret = 0; |
1da177e4 | 372 | response = ezusb_set_reset (serial, 0); |
ec6752f5 DW |
373 | out: |
374 | release_firmware(loader_fw); | |
375 | release_firmware(firmware_fw); | |
376 | return ret; | |
1da177e4 LT |
377 | } |
378 | ||
379 | ||
80359a9c | 380 | static int whiteheat_firmware_attach(struct usb_serial *serial) |
1da177e4 LT |
381 | { |
382 | /* We want this device to fail to have a driver assigned to it */ | |
383 | return 1; | |
384 | } | |
385 | ||
386 | ||
387 | /***************************************************************************** | |
388 | * Connect Tech's White Heat serial driver functions | |
389 | *****************************************************************************/ | |
80359a9c | 390 | static int whiteheat_attach(struct usb_serial *serial) |
1da177e4 LT |
391 | { |
392 | struct usb_serial_port *command_port; | |
393 | struct whiteheat_command_private *command_info; | |
394 | struct usb_serial_port *port; | |
395 | struct whiteheat_private *info; | |
396 | struct whiteheat_hw_info *hw_info; | |
397 | int pipe; | |
398 | int ret; | |
399 | int alen; | |
400 | __u8 *command; | |
401 | __u8 *result; | |
402 | int i; | |
403 | int j; | |
404 | struct urb *urb; | |
405 | int buf_size; | |
406 | struct whiteheat_urb_wrap *wrap; | |
407 | struct list_head *tmp; | |
408 | ||
409 | command_port = serial->port[COMMAND_PORT]; | |
410 | ||
80359a9c AC |
411 | pipe = usb_sndbulkpipe(serial->dev, |
412 | command_port->bulk_out_endpointAddress); | |
1da177e4 LT |
413 | command = kmalloc(2, GFP_KERNEL); |
414 | if (!command) | |
415 | goto no_command_buffer; | |
416 | command[0] = WHITEHEAT_GET_HW_INFO; | |
417 | command[1] = 0; | |
80359a9c | 418 | |
1da177e4 LT |
419 | result = kmalloc(sizeof(*hw_info) + 1, GFP_KERNEL); |
420 | if (!result) | |
421 | goto no_result_buffer; | |
422 | /* | |
423 | * When the module is reloaded the firmware is still there and | |
424 | * the endpoints are still in the usb core unchanged. This is the | |
80359a9c AC |
425 | * unlinking bug in disguise. Same for the call below. |
426 | */ | |
1da177e4 | 427 | usb_clear_halt(serial->dev, pipe); |
80359a9c AC |
428 | ret = usb_bulk_msg(serial->dev, pipe, command, 2, |
429 | &alen, COMMAND_TIMEOUT_MS); | |
1da177e4 | 430 | if (ret) { |
194343d9 GKH |
431 | dev_err(&serial->dev->dev, "%s: Couldn't send command [%d]\n", |
432 | serial->type->description, ret); | |
1da177e4 | 433 | goto no_firmware; |
09fd6bc8 | 434 | } else if (alen != 2) { |
194343d9 GKH |
435 | dev_err(&serial->dev->dev, "%s: Send command incomplete [%d]\n", |
436 | serial->type->description, alen); | |
1da177e4 LT |
437 | goto no_firmware; |
438 | } | |
439 | ||
80359a9c AC |
440 | pipe = usb_rcvbulkpipe(serial->dev, |
441 | command_port->bulk_in_endpointAddress); | |
1da177e4 LT |
442 | /* See the comment on the usb_clear_halt() above */ |
443 | usb_clear_halt(serial->dev, pipe); | |
80359a9c AC |
444 | ret = usb_bulk_msg(serial->dev, pipe, result, |
445 | sizeof(*hw_info) + 1, &alen, COMMAND_TIMEOUT_MS); | |
1da177e4 | 446 | if (ret) { |
194343d9 GKH |
447 | dev_err(&serial->dev->dev, "%s: Couldn't get results [%d]\n", |
448 | serial->type->description, ret); | |
1da177e4 | 449 | goto no_firmware; |
09fd6bc8 | 450 | } else if (alen != sizeof(*hw_info) + 1) { |
194343d9 GKH |
451 | dev_err(&serial->dev->dev, "%s: Get results incomplete [%d]\n", |
452 | serial->type->description, alen); | |
1da177e4 LT |
453 | goto no_firmware; |
454 | } else if (result[0] != command[0]) { | |
194343d9 GKH |
455 | dev_err(&serial->dev->dev, "%s: Command failed [%d]\n", |
456 | serial->type->description, result[0]); | |
1da177e4 LT |
457 | goto no_firmware; |
458 | } | |
459 | ||
460 | hw_info = (struct whiteheat_hw_info *)&result[1]; | |
461 | ||
c197a8db GKH |
462 | dev_info(&serial->dev->dev, "%s: Driver %s: Firmware v%d.%02d\n", |
463 | serial->type->description, DRIVER_VERSION, | |
464 | hw_info->sw_major_rev, hw_info->sw_minor_rev); | |
1da177e4 LT |
465 | |
466 | for (i = 0; i < serial->num_ports; i++) { | |
467 | port = serial->port[i]; | |
468 | ||
5cbded58 | 469 | info = kmalloc(sizeof(struct whiteheat_private), GFP_KERNEL); |
1da177e4 | 470 | if (info == NULL) { |
194343d9 GKH |
471 | dev_err(&port->dev, |
472 | "%s: Out of memory for port structures\n", | |
473 | serial->type->description); | |
1da177e4 LT |
474 | goto no_private; |
475 | } | |
476 | ||
477 | spin_lock_init(&info->lock); | |
08a2b3b6 | 478 | mutex_init(&info->deathwarrant); |
1da177e4 LT |
479 | info->flags = 0; |
480 | info->mcr = 0; | |
c4028958 DH |
481 | INIT_WORK(&info->rx_work, rx_data_softint); |
482 | info->port = port; | |
1da177e4 LT |
483 | |
484 | INIT_LIST_HEAD(&info->rx_urbs_free); | |
485 | INIT_LIST_HEAD(&info->rx_urbs_submitted); | |
486 | INIT_LIST_HEAD(&info->rx_urb_q); | |
487 | INIT_LIST_HEAD(&info->tx_urbs_free); | |
488 | INIT_LIST_HEAD(&info->tx_urbs_submitted); | |
489 | ||
490 | for (j = 0; j < urb_pool_size; j++) { | |
491 | urb = usb_alloc_urb(0, GFP_KERNEL); | |
492 | if (!urb) { | |
194343d9 | 493 | dev_err(&port->dev, "No free urbs available\n"); |
1da177e4 LT |
494 | goto no_rx_urb; |
495 | } | |
496 | buf_size = port->read_urb->transfer_buffer_length; | |
497 | urb->transfer_buffer = kmalloc(buf_size, GFP_KERNEL); | |
498 | if (!urb->transfer_buffer) { | |
194343d9 GKH |
499 | dev_err(&port->dev, |
500 | "Couldn't allocate urb buffer\n"); | |
1da177e4 LT |
501 | goto no_rx_buf; |
502 | } | |
503 | wrap = kmalloc(sizeof(*wrap), GFP_KERNEL); | |
504 | if (!wrap) { | |
194343d9 GKH |
505 | dev_err(&port->dev, |
506 | "Couldn't allocate urb wrapper\n"); | |
1da177e4 LT |
507 | goto no_rx_wrap; |
508 | } | |
509 | usb_fill_bulk_urb(urb, serial->dev, | |
510 | usb_rcvbulkpipe(serial->dev, | |
511 | port->bulk_in_endpointAddress), | |
512 | urb->transfer_buffer, buf_size, | |
513 | whiteheat_read_callback, port); | |
514 | wrap->urb = urb; | |
515 | list_add(&wrap->list, &info->rx_urbs_free); | |
516 | ||
517 | urb = usb_alloc_urb(0, GFP_KERNEL); | |
518 | if (!urb) { | |
194343d9 | 519 | dev_err(&port->dev, "No free urbs available\n"); |
1da177e4 LT |
520 | goto no_tx_urb; |
521 | } | |
522 | buf_size = port->write_urb->transfer_buffer_length; | |
523 | urb->transfer_buffer = kmalloc(buf_size, GFP_KERNEL); | |
524 | if (!urb->transfer_buffer) { | |
194343d9 GKH |
525 | dev_err(&port->dev, |
526 | "Couldn't allocate urb buffer\n"); | |
1da177e4 LT |
527 | goto no_tx_buf; |
528 | } | |
529 | wrap = kmalloc(sizeof(*wrap), GFP_KERNEL); | |
530 | if (!wrap) { | |
194343d9 GKH |
531 | dev_err(&port->dev, |
532 | "Couldn't allocate urb wrapper\n"); | |
1da177e4 LT |
533 | goto no_tx_wrap; |
534 | } | |
535 | usb_fill_bulk_urb(urb, serial->dev, | |
536 | usb_sndbulkpipe(serial->dev, | |
537 | port->bulk_out_endpointAddress), | |
538 | urb->transfer_buffer, buf_size, | |
539 | whiteheat_write_callback, port); | |
540 | wrap->urb = urb; | |
541 | list_add(&wrap->list, &info->tx_urbs_free); | |
542 | } | |
543 | ||
544 | usb_set_serial_port_data(port, info); | |
545 | } | |
546 | ||
80359a9c AC |
547 | command_info = kmalloc(sizeof(struct whiteheat_command_private), |
548 | GFP_KERNEL); | |
1da177e4 | 549 | if (command_info == NULL) { |
194343d9 GKH |
550 | dev_err(&serial->dev->dev, |
551 | "%s: Out of memory for port structures\n", | |
552 | serial->type->description); | |
1da177e4 LT |
553 | goto no_command_private; |
554 | } | |
555 | ||
08a2b3b6 | 556 | mutex_init(&command_info->mutex); |
1da177e4 LT |
557 | command_info->port_running = 0; |
558 | init_waitqueue_head(&command_info->wait_command); | |
559 | usb_set_serial_port_data(command_port, command_info); | |
560 | command_port->write_urb->complete = command_port_write_callback; | |
561 | command_port->read_urb->complete = command_port_read_callback; | |
562 | kfree(result); | |
563 | kfree(command); | |
564 | ||
565 | return 0; | |
566 | ||
567 | no_firmware: | |
568 | /* Firmware likely not running */ | |
194343d9 GKH |
569 | dev_err(&serial->dev->dev, |
570 | "%s: Unable to retrieve firmware version, try replugging\n", | |
571 | serial->type->description); | |
572 | dev_err(&serial->dev->dev, | |
573 | "%s: If the firmware is not running (status led not blinking)\n", | |
574 | serial->type->description); | |
575 | dev_err(&serial->dev->dev, | |
576 | "%s: please contact support@connecttech.com\n", | |
577 | serial->type->description); | |
67ca0284 | 578 | kfree(result); |
1da177e4 LT |
579 | return -ENODEV; |
580 | ||
581 | no_command_private: | |
582 | for (i = serial->num_ports - 1; i >= 0; i--) { | |
583 | port = serial->port[i]; | |
584 | info = usb_get_serial_port_data(port); | |
585 | for (j = urb_pool_size - 1; j >= 0; j--) { | |
586 | tmp = list_first(&info->tx_urbs_free); | |
587 | list_del(tmp); | |
588 | wrap = list_entry(tmp, struct whiteheat_urb_wrap, list); | |
589 | urb = wrap->urb; | |
590 | kfree(wrap); | |
591 | no_tx_wrap: | |
592 | kfree(urb->transfer_buffer); | |
593 | no_tx_buf: | |
594 | usb_free_urb(urb); | |
595 | no_tx_urb: | |
596 | tmp = list_first(&info->rx_urbs_free); | |
597 | list_del(tmp); | |
598 | wrap = list_entry(tmp, struct whiteheat_urb_wrap, list); | |
599 | urb = wrap->urb; | |
600 | kfree(wrap); | |
601 | no_rx_wrap: | |
602 | kfree(urb->transfer_buffer); | |
603 | no_rx_buf: | |
604 | usb_free_urb(urb); | |
605 | no_rx_urb: | |
606 | ; | |
607 | } | |
608 | kfree(info); | |
609 | no_private: | |
610 | ; | |
611 | } | |
612 | kfree(result); | |
613 | no_result_buffer: | |
614 | kfree(command); | |
615 | no_command_buffer: | |
616 | return -ENOMEM; | |
617 | } | |
618 | ||
619 | ||
f9c99bb8 | 620 | static void whiteheat_release(struct usb_serial *serial) |
1da177e4 LT |
621 | { |
622 | struct usb_serial_port *command_port; | |
623 | struct usb_serial_port *port; | |
624 | struct whiteheat_private *info; | |
625 | struct whiteheat_urb_wrap *wrap; | |
626 | struct urb *urb; | |
627 | struct list_head *tmp; | |
628 | struct list_head *tmp2; | |
629 | int i; | |
630 | ||
441b62c1 | 631 | dbg("%s", __func__); |
1da177e4 LT |
632 | |
633 | /* free up our private data for our command port */ | |
634 | command_port = serial->port[COMMAND_PORT]; | |
80359a9c | 635 | kfree(usb_get_serial_port_data(command_port)); |
1da177e4 LT |
636 | |
637 | for (i = 0; i < serial->num_ports; i++) { | |
638 | port = serial->port[i]; | |
639 | info = usb_get_serial_port_data(port); | |
640 | list_for_each_safe(tmp, tmp2, &info->rx_urbs_free) { | |
641 | list_del(tmp); | |
642 | wrap = list_entry(tmp, struct whiteheat_urb_wrap, list); | |
643 | urb = wrap->urb; | |
644 | kfree(wrap); | |
645 | kfree(urb->transfer_buffer); | |
646 | usb_free_urb(urb); | |
647 | } | |
648 | list_for_each_safe(tmp, tmp2, &info->tx_urbs_free) { | |
649 | list_del(tmp); | |
650 | wrap = list_entry(tmp, struct whiteheat_urb_wrap, list); | |
651 | urb = wrap->urb; | |
652 | kfree(wrap); | |
653 | kfree(urb->transfer_buffer); | |
654 | usb_free_urb(urb); | |
655 | } | |
656 | kfree(info); | |
657 | } | |
658 | ||
659 | return; | |
660 | } | |
661 | ||
a509a7e4 | 662 | static int whiteheat_open(struct tty_struct *tty, struct usb_serial_port *port) |
1da177e4 LT |
663 | { |
664 | int retval = 0; | |
1da177e4 | 665 | |
441b62c1 | 666 | dbg("%s - port %d", __func__, port->number); |
1da177e4 LT |
667 | |
668 | retval = start_command_port(port->serial); | |
669 | if (retval) | |
670 | goto exit; | |
671 | ||
95da310e AC |
672 | if (tty) |
673 | tty->low_latency = 1; | |
1da177e4 LT |
674 | |
675 | /* send an open port command */ | |
676 | retval = firm_open(port); | |
677 | if (retval) { | |
678 | stop_command_port(port->serial); | |
679 | goto exit; | |
680 | } | |
681 | ||
682 | retval = firm_purge(port, WHITEHEAT_PURGE_RX | WHITEHEAT_PURGE_TX); | |
683 | if (retval) { | |
684 | firm_close(port); | |
685 | stop_command_port(port->serial); | |
686 | goto exit; | |
687 | } | |
688 | ||
72e27412 AC |
689 | if (tty) |
690 | firm_setup_port(tty); | |
1da177e4 LT |
691 | |
692 | /* Work around HCD bugs */ | |
693 | usb_clear_halt(port->serial->dev, port->read_urb->pipe); | |
694 | usb_clear_halt(port->serial->dev, port->write_urb->pipe); | |
695 | ||
696 | /* Start reading from the device */ | |
697 | retval = start_port_read(port); | |
698 | if (retval) { | |
194343d9 GKH |
699 | dev_err(&port->dev, |
700 | "%s - failed submitting read urb, error %d\n", | |
701 | __func__, retval); | |
1da177e4 LT |
702 | firm_close(port); |
703 | stop_command_port(port->serial); | |
704 | goto exit; | |
705 | } | |
706 | ||
707 | exit: | |
441b62c1 | 708 | dbg("%s - exit, retval = %d", __func__, retval); |
1da177e4 LT |
709 | return retval; |
710 | } | |
711 | ||
712 | ||
335f8514 | 713 | static void whiteheat_close(struct usb_serial_port *port) |
1da177e4 LT |
714 | { |
715 | struct whiteheat_private *info = usb_get_serial_port_data(port); | |
716 | struct whiteheat_urb_wrap *wrap; | |
717 | struct urb *urb; | |
718 | struct list_head *tmp; | |
719 | struct list_head *tmp2; | |
1da177e4 | 720 | |
441b62c1 | 721 | dbg("%s - port %d", __func__, port->number); |
e33fe4d8 | 722 | |
1da177e4 | 723 | firm_report_tx_done(port); |
1da177e4 LT |
724 | firm_close(port); |
725 | ||
726 | /* shutdown our bulk reads and writes */ | |
08a2b3b6 ON |
727 | mutex_lock(&info->deathwarrant); |
728 | spin_lock_irq(&info->lock); | |
1da177e4 LT |
729 | list_for_each_safe(tmp, tmp2, &info->rx_urbs_submitted) { |
730 | wrap = list_entry(tmp, struct whiteheat_urb_wrap, list); | |
731 | urb = wrap->urb; | |
08a2b3b6 ON |
732 | list_del(tmp); |
733 | spin_unlock_irq(&info->lock); | |
1da177e4 | 734 | usb_kill_urb(urb); |
08a2b3b6 ON |
735 | spin_lock_irq(&info->lock); |
736 | list_add(tmp, &info->rx_urbs_free); | |
1da177e4 | 737 | } |
179e0917 AM |
738 | list_for_each_safe(tmp, tmp2, &info->rx_urb_q) |
739 | list_move(tmp, &info->rx_urbs_free); | |
1da177e4 LT |
740 | list_for_each_safe(tmp, tmp2, &info->tx_urbs_submitted) { |
741 | wrap = list_entry(tmp, struct whiteheat_urb_wrap, list); | |
742 | urb = wrap->urb; | |
08a2b3b6 ON |
743 | list_del(tmp); |
744 | spin_unlock_irq(&info->lock); | |
1da177e4 | 745 | usb_kill_urb(urb); |
08a2b3b6 ON |
746 | spin_lock_irq(&info->lock); |
747 | list_add(tmp, &info->tx_urbs_free); | |
1da177e4 | 748 | } |
08a2b3b6 ON |
749 | spin_unlock_irq(&info->lock); |
750 | mutex_unlock(&info->deathwarrant); | |
1da177e4 | 751 | stop_command_port(port->serial); |
1da177e4 LT |
752 | } |
753 | ||
754 | ||
95da310e AC |
755 | static int whiteheat_write(struct tty_struct *tty, |
756 | struct usb_serial_port *port, const unsigned char *buf, int count) | |
1da177e4 LT |
757 | { |
758 | struct usb_serial *serial = port->serial; | |
759 | struct whiteheat_private *info = usb_get_serial_port_data(port); | |
760 | struct whiteheat_urb_wrap *wrap; | |
761 | struct urb *urb; | |
762 | int result; | |
763 | int bytes; | |
764 | int sent = 0; | |
765 | unsigned long flags; | |
766 | struct list_head *tmp; | |
767 | ||
441b62c1 | 768 | dbg("%s - port %d", __func__, port->number); |
1da177e4 LT |
769 | |
770 | if (count == 0) { | |
441b62c1 | 771 | dbg("%s - write request of 0 bytes", __func__); |
1da177e4 LT |
772 | return (0); |
773 | } | |
774 | ||
775 | while (count) { | |
776 | spin_lock_irqsave(&info->lock, flags); | |
777 | if (list_empty(&info->tx_urbs_free)) { | |
778 | spin_unlock_irqrestore(&info->lock, flags); | |
779 | break; | |
780 | } | |
781 | tmp = list_first(&info->tx_urbs_free); | |
782 | list_del(tmp); | |
783 | spin_unlock_irqrestore(&info->lock, flags); | |
784 | ||
785 | wrap = list_entry(tmp, struct whiteheat_urb_wrap, list); | |
786 | urb = wrap->urb; | |
80359a9c AC |
787 | bytes = (count > port->bulk_out_size) ? |
788 | port->bulk_out_size : count; | |
789 | memcpy(urb->transfer_buffer, buf + sent, bytes); | |
1da177e4 | 790 | |
80359a9c AC |
791 | usb_serial_debug_data(debug, &port->dev, |
792 | __func__, bytes, urb->transfer_buffer); | |
1da177e4 LT |
793 | |
794 | urb->dev = serial->dev; | |
795 | urb->transfer_buffer_length = bytes; | |
796 | result = usb_submit_urb(urb, GFP_ATOMIC); | |
797 | if (result) { | |
194343d9 GKH |
798 | dev_err(&port->dev, |
799 | "%s - failed submitting write urb, error %d\n", | |
800 | __func__, result); | |
1da177e4 LT |
801 | sent = result; |
802 | spin_lock_irqsave(&info->lock, flags); | |
803 | list_add(tmp, &info->tx_urbs_free); | |
804 | spin_unlock_irqrestore(&info->lock, flags); | |
805 | break; | |
806 | } else { | |
807 | sent += bytes; | |
808 | count -= bytes; | |
809 | spin_lock_irqsave(&info->lock, flags); | |
810 | list_add(tmp, &info->tx_urbs_submitted); | |
811 | spin_unlock_irqrestore(&info->lock, flags); | |
812 | } | |
813 | } | |
814 | ||
815 | return sent; | |
816 | } | |
817 | ||
95da310e | 818 | static int whiteheat_write_room(struct tty_struct *tty) |
1da177e4 | 819 | { |
95da310e | 820 | struct usb_serial_port *port = tty->driver_data; |
1da177e4 LT |
821 | struct whiteheat_private *info = usb_get_serial_port_data(port); |
822 | struct list_head *tmp; | |
823 | int room = 0; | |
824 | unsigned long flags; | |
825 | ||
441b62c1 | 826 | dbg("%s - port %d", __func__, port->number); |
80359a9c | 827 | |
1da177e4 LT |
828 | spin_lock_irqsave(&info->lock, flags); |
829 | list_for_each(tmp, &info->tx_urbs_free) | |
830 | room++; | |
831 | spin_unlock_irqrestore(&info->lock, flags); | |
832 | room *= port->bulk_out_size; | |
833 | ||
441b62c1 | 834 | dbg("%s - returns %d", __func__, room); |
1da177e4 LT |
835 | return (room); |
836 | } | |
837 | ||
80359a9c | 838 | static int whiteheat_tiocmget(struct tty_struct *tty, struct file *file) |
1da177e4 | 839 | { |
95da310e | 840 | struct usb_serial_port *port = tty->driver_data; |
1da177e4 LT |
841 | struct whiteheat_private *info = usb_get_serial_port_data(port); |
842 | unsigned int modem_signals = 0; | |
843 | ||
441b62c1 | 844 | dbg("%s - port %d", __func__, port->number); |
1da177e4 LT |
845 | |
846 | firm_get_dtr_rts(port); | |
847 | if (info->mcr & UART_MCR_DTR) | |
848 | modem_signals |= TIOCM_DTR; | |
849 | if (info->mcr & UART_MCR_RTS) | |
850 | modem_signals |= TIOCM_RTS; | |
851 | ||
852 | return modem_signals; | |
853 | } | |
854 | ||
80359a9c | 855 | static int whiteheat_tiocmset(struct tty_struct *tty, struct file *file, |
1da177e4 LT |
856 | unsigned int set, unsigned int clear) |
857 | { | |
95da310e | 858 | struct usb_serial_port *port = tty->driver_data; |
1da177e4 LT |
859 | struct whiteheat_private *info = usb_get_serial_port_data(port); |
860 | ||
441b62c1 | 861 | dbg("%s - port %d", __func__, port->number); |
1da177e4 LT |
862 | |
863 | if (set & TIOCM_RTS) | |
864 | info->mcr |= UART_MCR_RTS; | |
865 | if (set & TIOCM_DTR) | |
866 | info->mcr |= UART_MCR_DTR; | |
867 | ||
868 | if (clear & TIOCM_RTS) | |
869 | info->mcr &= ~UART_MCR_RTS; | |
870 | if (clear & TIOCM_DTR) | |
871 | info->mcr &= ~UART_MCR_DTR; | |
872 | ||
873 | firm_set_dtr(port, info->mcr & UART_MCR_DTR); | |
874 | firm_set_rts(port, info->mcr & UART_MCR_RTS); | |
875 | return 0; | |
876 | } | |
877 | ||
878 | ||
80359a9c AC |
879 | static int whiteheat_ioctl(struct tty_struct *tty, struct file *file, |
880 | unsigned int cmd, unsigned long arg) | |
1da177e4 | 881 | { |
95da310e | 882 | struct usb_serial_port *port = tty->driver_data; |
1da177e4 LT |
883 | struct serial_struct serstruct; |
884 | void __user *user_arg = (void __user *)arg; | |
885 | ||
441b62c1 | 886 | dbg("%s - port %d, cmd 0x%.4x", __func__, port->number, cmd); |
1da177e4 LT |
887 | |
888 | switch (cmd) { | |
80359a9c AC |
889 | case TIOCGSERIAL: |
890 | memset(&serstruct, 0, sizeof(serstruct)); | |
891 | serstruct.type = PORT_16654; | |
892 | serstruct.line = port->serial->minor; | |
893 | serstruct.port = port->number; | |
894 | serstruct.flags = ASYNC_SKIP_TEST | ASYNC_AUTO_IRQ; | |
895 | serstruct.xmit_fifo_size = port->bulk_out_size; | |
896 | serstruct.custom_divisor = 0; | |
897 | serstruct.baud_base = 460800; | |
898 | serstruct.close_delay = CLOSING_DELAY; | |
899 | serstruct.closing_wait = CLOSING_DELAY; | |
900 | ||
901 | if (copy_to_user(user_arg, &serstruct, sizeof(serstruct))) | |
902 | return -EFAULT; | |
903 | break; | |
904 | default: | |
905 | break; | |
1da177e4 LT |
906 | } |
907 | ||
908 | return -ENOIOCTLCMD; | |
909 | } | |
910 | ||
911 | ||
80359a9c AC |
912 | static void whiteheat_set_termios(struct tty_struct *tty, |
913 | struct usb_serial_port *port, struct ktermios *old_termios) | |
1da177e4 | 914 | { |
95da310e | 915 | firm_setup_port(tty); |
1da177e4 LT |
916 | } |
917 | ||
80359a9c AC |
918 | static void whiteheat_break_ctl(struct tty_struct *tty, int break_state) |
919 | { | |
95da310e | 920 | struct usb_serial_port *port = tty->driver_data; |
1da177e4 LT |
921 | firm_set_break(port, break_state); |
922 | } | |
923 | ||
924 | ||
95da310e | 925 | static int whiteheat_chars_in_buffer(struct tty_struct *tty) |
1da177e4 | 926 | { |
95da310e | 927 | struct usb_serial_port *port = tty->driver_data; |
1da177e4 LT |
928 | struct whiteheat_private *info = usb_get_serial_port_data(port); |
929 | struct list_head *tmp; | |
930 | struct whiteheat_urb_wrap *wrap; | |
931 | int chars = 0; | |
932 | unsigned long flags; | |
933 | ||
441b62c1 | 934 | dbg("%s - port %d", __func__, port->number); |
1da177e4 LT |
935 | |
936 | spin_lock_irqsave(&info->lock, flags); | |
937 | list_for_each(tmp, &info->tx_urbs_submitted) { | |
938 | wrap = list_entry(tmp, struct whiteheat_urb_wrap, list); | |
939 | chars += wrap->urb->transfer_buffer_length; | |
940 | } | |
941 | spin_unlock_irqrestore(&info->lock, flags); | |
942 | ||
80359a9c | 943 | dbg("%s - returns %d", __func__, chars); |
08a2b3b6 | 944 | return chars; |
1da177e4 LT |
945 | } |
946 | ||
947 | ||
80359a9c | 948 | static void whiteheat_throttle(struct tty_struct *tty) |
1da177e4 | 949 | { |
95da310e | 950 | struct usb_serial_port *port = tty->driver_data; |
1da177e4 | 951 | struct whiteheat_private *info = usb_get_serial_port_data(port); |
1da177e4 | 952 | |
441b62c1 | 953 | dbg("%s - port %d", __func__, port->number); |
1da177e4 | 954 | |
63832515 | 955 | spin_lock_irq(&info->lock); |
1da177e4 | 956 | info->flags |= THROTTLED; |
63832515 | 957 | spin_unlock_irq(&info->lock); |
1da177e4 LT |
958 | |
959 | return; | |
960 | } | |
961 | ||
962 | ||
80359a9c | 963 | static void whiteheat_unthrottle(struct tty_struct *tty) |
1da177e4 | 964 | { |
95da310e | 965 | struct usb_serial_port *port = tty->driver_data; |
1da177e4 LT |
966 | struct whiteheat_private *info = usb_get_serial_port_data(port); |
967 | int actually_throttled; | |
1da177e4 | 968 | |
441b62c1 | 969 | dbg("%s - port %d", __func__, port->number); |
1da177e4 | 970 | |
63832515 | 971 | spin_lock_irq(&info->lock); |
1da177e4 LT |
972 | actually_throttled = info->flags & ACTUALLY_THROTTLED; |
973 | info->flags &= ~(THROTTLED | ACTUALLY_THROTTLED); | |
63832515 | 974 | spin_unlock_irq(&info->lock); |
1da177e4 LT |
975 | |
976 | if (actually_throttled) | |
c4028958 | 977 | rx_data_softint(&info->rx_work); |
1da177e4 LT |
978 | |
979 | return; | |
980 | } | |
981 | ||
982 | ||
983 | /***************************************************************************** | |
984 | * Connect Tech's White Heat callback routines | |
985 | *****************************************************************************/ | |
08a2b3b6 | 986 | static void command_port_write_callback(struct urb *urb) |
1da177e4 | 987 | { |
05400013 GKH |
988 | int status = urb->status; |
989 | ||
441b62c1 | 990 | dbg("%s", __func__); |
1da177e4 | 991 | |
05400013 GKH |
992 | if (status) { |
993 | dbg("nonzero urb status: %d", status); | |
1da177e4 LT |
994 | return; |
995 | } | |
996 | } | |
997 | ||
998 | ||
08a2b3b6 | 999 | static void command_port_read_callback(struct urb *urb) |
1da177e4 | 1000 | { |
cdc97792 | 1001 | struct usb_serial_port *command_port = urb->context; |
1da177e4 | 1002 | struct whiteheat_command_private *command_info; |
05400013 | 1003 | int status = urb->status; |
1da177e4 LT |
1004 | unsigned char *data = urb->transfer_buffer; |
1005 | int result; | |
1da177e4 | 1006 | |
441b62c1 | 1007 | dbg("%s", __func__); |
1da177e4 | 1008 | |
08a2b3b6 ON |
1009 | command_info = usb_get_serial_port_data(command_port); |
1010 | if (!command_info) { | |
80359a9c | 1011 | dbg("%s - command_info is NULL, exiting.", __func__); |
08a2b3b6 ON |
1012 | return; |
1013 | } | |
05400013 | 1014 | if (status) { |
441b62c1 | 1015 | dbg("%s - nonzero urb status: %d", __func__, status); |
05400013 | 1016 | if (status != -ENOENT) |
08a2b3b6 ON |
1017 | command_info->command_finished = WHITEHEAT_CMD_FAILURE; |
1018 | wake_up(&command_info->wait_command); | |
1da177e4 LT |
1019 | return; |
1020 | } | |
1021 | ||
80359a9c AC |
1022 | usb_serial_debug_data(debug, &command_port->dev, |
1023 | __func__, urb->actual_length, data); | |
1da177e4 | 1024 | |
1da177e4 LT |
1025 | if (data[0] == WHITEHEAT_CMD_COMPLETE) { |
1026 | command_info->command_finished = WHITEHEAT_CMD_COMPLETE; | |
08a2b3b6 | 1027 | wake_up(&command_info->wait_command); |
1da177e4 LT |
1028 | } else if (data[0] == WHITEHEAT_CMD_FAILURE) { |
1029 | command_info->command_finished = WHITEHEAT_CMD_FAILURE; | |
08a2b3b6 | 1030 | wake_up(&command_info->wait_command); |
1da177e4 | 1031 | } else if (data[0] == WHITEHEAT_EVENT) { |
80359a9c AC |
1032 | /* These are unsolicited reports from the firmware, hence no |
1033 | waiting command to wakeup */ | |
441b62c1 | 1034 | dbg("%s - event received", __func__); |
1da177e4 | 1035 | } else if (data[0] == WHITEHEAT_GET_DTR_RTS) { |
80359a9c AC |
1036 | memcpy(command_info->result_buffer, &data[1], |
1037 | urb->actual_length - 1); | |
1da177e4 | 1038 | command_info->command_finished = WHITEHEAT_CMD_COMPLETE; |
08a2b3b6 | 1039 | wake_up(&command_info->wait_command); |
80359a9c | 1040 | } else |
441b62c1 | 1041 | dbg("%s - bad reply from firmware", __func__); |
80359a9c | 1042 | |
1da177e4 LT |
1043 | /* Continue trying to always read */ |
1044 | command_port->read_urb->dev = command_port->serial->dev; | |
1045 | result = usb_submit_urb(command_port->read_urb, GFP_ATOMIC); | |
1da177e4 | 1046 | if (result) |
80359a9c AC |
1047 | dbg("%s - failed resubmitting read urb, error %d", |
1048 | __func__, result); | |
1da177e4 LT |
1049 | } |
1050 | ||
1051 | ||
7d12e780 | 1052 | static void whiteheat_read_callback(struct urb *urb) |
1da177e4 | 1053 | { |
cdc97792 | 1054 | struct usb_serial_port *port = urb->context; |
1da177e4 LT |
1055 | struct whiteheat_urb_wrap *wrap; |
1056 | unsigned char *data = urb->transfer_buffer; | |
1057 | struct whiteheat_private *info = usb_get_serial_port_data(port); | |
05400013 | 1058 | int status = urb->status; |
1da177e4 | 1059 | |
441b62c1 | 1060 | dbg("%s - port %d", __func__, port->number); |
1da177e4 LT |
1061 | |
1062 | spin_lock(&info->lock); | |
1063 | wrap = urb_to_wrap(urb, &info->rx_urbs_submitted); | |
1064 | if (!wrap) { | |
1065 | spin_unlock(&info->lock); | |
194343d9 | 1066 | dev_err(&port->dev, "%s - Not my urb!\n", __func__); |
1da177e4 LT |
1067 | return; |
1068 | } | |
1069 | list_del(&wrap->list); | |
1070 | spin_unlock(&info->lock); | |
1071 | ||
05400013 GKH |
1072 | if (status) { |
1073 | dbg("%s - nonzero read bulk status received: %d", | |
441b62c1 | 1074 | __func__, status); |
1da177e4 LT |
1075 | spin_lock(&info->lock); |
1076 | list_add(&wrap->list, &info->rx_urbs_free); | |
1077 | spin_unlock(&info->lock); | |
1078 | return; | |
1079 | } | |
1080 | ||
80359a9c AC |
1081 | usb_serial_debug_data(debug, &port->dev, |
1082 | __func__, urb->actual_length, data); | |
1da177e4 LT |
1083 | |
1084 | spin_lock(&info->lock); | |
1085 | list_add_tail(&wrap->list, &info->rx_urb_q); | |
1086 | if (info->flags & THROTTLED) { | |
1087 | info->flags |= ACTUALLY_THROTTLED; | |
1088 | spin_unlock(&info->lock); | |
1089 | return; | |
1090 | } | |
1091 | spin_unlock(&info->lock); | |
1092 | ||
1093 | schedule_work(&info->rx_work); | |
1094 | } | |
1095 | ||
1096 | ||
7d12e780 | 1097 | static void whiteheat_write_callback(struct urb *urb) |
1da177e4 | 1098 | { |
cdc97792 | 1099 | struct usb_serial_port *port = urb->context; |
1da177e4 LT |
1100 | struct whiteheat_private *info = usb_get_serial_port_data(port); |
1101 | struct whiteheat_urb_wrap *wrap; | |
05400013 | 1102 | int status = urb->status; |
1da177e4 | 1103 | |
441b62c1 | 1104 | dbg("%s - port %d", __func__, port->number); |
1da177e4 LT |
1105 | |
1106 | spin_lock(&info->lock); | |
1107 | wrap = urb_to_wrap(urb, &info->tx_urbs_submitted); | |
1108 | if (!wrap) { | |
1109 | spin_unlock(&info->lock); | |
194343d9 | 1110 | dev_err(&port->dev, "%s - Not my urb!\n", __func__); |
1da177e4 LT |
1111 | return; |
1112 | } | |
179e0917 | 1113 | list_move(&wrap->list, &info->tx_urbs_free); |
1da177e4 LT |
1114 | spin_unlock(&info->lock); |
1115 | ||
05400013 GKH |
1116 | if (status) { |
1117 | dbg("%s - nonzero write bulk status received: %d", | |
441b62c1 | 1118 | __func__, status); |
1da177e4 LT |
1119 | return; |
1120 | } | |
1121 | ||
cf2c7481 | 1122 | usb_serial_port_softint(port); |
1da177e4 LT |
1123 | } |
1124 | ||
1125 | ||
1126 | /***************************************************************************** | |
1127 | * Connect Tech's White Heat firmware interface | |
1128 | *****************************************************************************/ | |
80359a9c AC |
1129 | static int firm_send_command(struct usb_serial_port *port, __u8 command, |
1130 | __u8 *data, __u8 datasize) | |
1da177e4 LT |
1131 | { |
1132 | struct usb_serial_port *command_port; | |
1133 | struct whiteheat_command_private *command_info; | |
1134 | struct whiteheat_private *info; | |
1135 | __u8 *transfer_buffer; | |
1136 | int retval = 0; | |
08a2b3b6 | 1137 | int t; |
1da177e4 | 1138 | |
441b62c1 | 1139 | dbg("%s - command %d", __func__, command); |
1da177e4 LT |
1140 | |
1141 | command_port = port->serial->port[COMMAND_PORT]; | |
1142 | command_info = usb_get_serial_port_data(command_port); | |
08a2b3b6 | 1143 | mutex_lock(&command_info->mutex); |
38c3cb5b | 1144 | command_info->command_finished = false; |
80359a9c | 1145 | |
1da177e4 LT |
1146 | transfer_buffer = (__u8 *)command_port->write_urb->transfer_buffer; |
1147 | transfer_buffer[0] = command; | |
80359a9c | 1148 | memcpy(&transfer_buffer[1], data, datasize); |
1da177e4 LT |
1149 | command_port->write_urb->transfer_buffer_length = datasize + 1; |
1150 | command_port->write_urb->dev = port->serial->dev; | |
80359a9c | 1151 | retval = usb_submit_urb(command_port->write_urb, GFP_NOIO); |
1da177e4 | 1152 | if (retval) { |
441b62c1 | 1153 | dbg("%s - submit urb failed", __func__); |
1da177e4 LT |
1154 | goto exit; |
1155 | } | |
1da177e4 LT |
1156 | |
1157 | /* wait for the command to complete */ | |
08a2b3b6 | 1158 | t = wait_event_timeout(command_info->wait_command, |
38c3cb5b | 1159 | (bool)command_info->command_finished, COMMAND_TIMEOUT); |
08a2b3b6 ON |
1160 | if (!t) |
1161 | usb_kill_urb(command_port->write_urb); | |
1da177e4 | 1162 | |
38c3cb5b | 1163 | if (command_info->command_finished == false) { |
441b62c1 | 1164 | dbg("%s - command timed out.", __func__); |
1da177e4 LT |
1165 | retval = -ETIMEDOUT; |
1166 | goto exit; | |
1167 | } | |
1168 | ||
1169 | if (command_info->command_finished == WHITEHEAT_CMD_FAILURE) { | |
441b62c1 | 1170 | dbg("%s - command failed.", __func__); |
1da177e4 LT |
1171 | retval = -EIO; |
1172 | goto exit; | |
1173 | } | |
1174 | ||
1175 | if (command_info->command_finished == WHITEHEAT_CMD_COMPLETE) { | |
441b62c1 | 1176 | dbg("%s - command completed.", __func__); |
1da177e4 | 1177 | switch (command) { |
80359a9c AC |
1178 | case WHITEHEAT_GET_DTR_RTS: |
1179 | info = usb_get_serial_port_data(port); | |
1180 | memcpy(&info->mcr, command_info->result_buffer, | |
1181 | sizeof(struct whiteheat_dr_info)); | |
1da177e4 LT |
1182 | break; |
1183 | } | |
1184 | } | |
1da177e4 | 1185 | exit: |
08a2b3b6 | 1186 | mutex_unlock(&command_info->mutex); |
1da177e4 LT |
1187 | return retval; |
1188 | } | |
1189 | ||
1190 | ||
80359a9c AC |
1191 | static int firm_open(struct usb_serial_port *port) |
1192 | { | |
1da177e4 LT |
1193 | struct whiteheat_simple open_command; |
1194 | ||
1195 | open_command.port = port->number - port->serial->minor + 1; | |
80359a9c AC |
1196 | return firm_send_command(port, WHITEHEAT_OPEN, |
1197 | (__u8 *)&open_command, sizeof(open_command)); | |
1da177e4 LT |
1198 | } |
1199 | ||
1200 | ||
80359a9c AC |
1201 | static int firm_close(struct usb_serial_port *port) |
1202 | { | |
1da177e4 LT |
1203 | struct whiteheat_simple close_command; |
1204 | ||
1205 | close_command.port = port->number - port->serial->minor + 1; | |
80359a9c AC |
1206 | return firm_send_command(port, WHITEHEAT_CLOSE, |
1207 | (__u8 *)&close_command, sizeof(close_command)); | |
1da177e4 LT |
1208 | } |
1209 | ||
1210 | ||
fe1ae7fd | 1211 | static void firm_setup_port(struct tty_struct *tty) |
80359a9c | 1212 | { |
95da310e | 1213 | struct usb_serial_port *port = tty->driver_data; |
1da177e4 | 1214 | struct whiteheat_port_settings port_settings; |
95da310e | 1215 | unsigned int cflag = tty->termios->c_cflag; |
1da177e4 LT |
1216 | |
1217 | port_settings.port = port->number + 1; | |
1218 | ||
1219 | /* get the byte size */ | |
1220 | switch (cflag & CSIZE) { | |
80359a9c AC |
1221 | case CS5: port_settings.bits = 5; break; |
1222 | case CS6: port_settings.bits = 6; break; | |
1223 | case CS7: port_settings.bits = 7; break; | |
1224 | default: | |
1225 | case CS8: port_settings.bits = 8; break; | |
1da177e4 | 1226 | } |
441b62c1 | 1227 | dbg("%s - data bits = %d", __func__, port_settings.bits); |
80359a9c | 1228 | |
1da177e4 LT |
1229 | /* determine the parity */ |
1230 | if (cflag & PARENB) | |
1231 | if (cflag & CMSPAR) | |
1232 | if (cflag & PARODD) | |
1233 | port_settings.parity = WHITEHEAT_PAR_MARK; | |
1234 | else | |
1235 | port_settings.parity = WHITEHEAT_PAR_SPACE; | |
1236 | else | |
1237 | if (cflag & PARODD) | |
1238 | port_settings.parity = WHITEHEAT_PAR_ODD; | |
1239 | else | |
1240 | port_settings.parity = WHITEHEAT_PAR_EVEN; | |
1241 | else | |
1242 | port_settings.parity = WHITEHEAT_PAR_NONE; | |
441b62c1 | 1243 | dbg("%s - parity = %c", __func__, port_settings.parity); |
1da177e4 LT |
1244 | |
1245 | /* figure out the stop bits requested */ | |
1246 | if (cflag & CSTOPB) | |
1247 | port_settings.stop = 2; | |
1248 | else | |
1249 | port_settings.stop = 1; | |
441b62c1 | 1250 | dbg("%s - stop bits = %d", __func__, port_settings.stop); |
1da177e4 LT |
1251 | |
1252 | /* figure out the flow control settings */ | |
1253 | if (cflag & CRTSCTS) | |
80359a9c AC |
1254 | port_settings.hflow = (WHITEHEAT_HFLOW_CTS | |
1255 | WHITEHEAT_HFLOW_RTS); | |
1da177e4 LT |
1256 | else |
1257 | port_settings.hflow = WHITEHEAT_HFLOW_NONE; | |
441b62c1 | 1258 | dbg("%s - hardware flow control = %s %s %s %s", __func__, |
1da177e4 LT |
1259 | (port_settings.hflow & WHITEHEAT_HFLOW_CTS) ? "CTS" : "", |
1260 | (port_settings.hflow & WHITEHEAT_HFLOW_RTS) ? "RTS" : "", | |
1261 | (port_settings.hflow & WHITEHEAT_HFLOW_DSR) ? "DSR" : "", | |
1262 | (port_settings.hflow & WHITEHEAT_HFLOW_DTR) ? "DTR" : ""); | |
80359a9c | 1263 | |
1da177e4 | 1264 | /* determine software flow control */ |
95da310e | 1265 | if (I_IXOFF(tty)) |
1da177e4 LT |
1266 | port_settings.sflow = WHITEHEAT_SFLOW_RXTX; |
1267 | else | |
1268 | port_settings.sflow = WHITEHEAT_SFLOW_NONE; | |
441b62c1 | 1269 | dbg("%s - software flow control = %c", __func__, port_settings.sflow); |
80359a9c | 1270 | |
95da310e AC |
1271 | port_settings.xon = START_CHAR(tty); |
1272 | port_settings.xoff = STOP_CHAR(tty); | |
80359a9c AC |
1273 | dbg("%s - XON = %2x, XOFF = %2x", |
1274 | __func__, port_settings.xon, port_settings.xoff); | |
1da177e4 LT |
1275 | |
1276 | /* get the baud rate wanted */ | |
95da310e | 1277 | port_settings.baud = tty_get_baud_rate(tty); |
441b62c1 | 1278 | dbg("%s - baud rate = %d", __func__, port_settings.baud); |
1da177e4 | 1279 | |
01d1df29 | 1280 | /* fixme: should set validated settings */ |
95da310e | 1281 | tty_encode_baud_rate(tty, port_settings.baud, port_settings.baud); |
1da177e4 LT |
1282 | /* handle any settings that aren't specified in the tty structure */ |
1283 | port_settings.lloop = 0; | |
80359a9c | 1284 | |
1da177e4 | 1285 | /* now send the message to the device */ |
fe1ae7fd | 1286 | firm_send_command(port, WHITEHEAT_SETUP_PORT, |
80359a9c | 1287 | (__u8 *)&port_settings, sizeof(port_settings)); |
1da177e4 LT |
1288 | } |
1289 | ||
1290 | ||
80359a9c AC |
1291 | static int firm_set_rts(struct usb_serial_port *port, __u8 onoff) |
1292 | { | |
1da177e4 LT |
1293 | struct whiteheat_set_rdb rts_command; |
1294 | ||
1295 | rts_command.port = port->number - port->serial->minor + 1; | |
1296 | rts_command.state = onoff; | |
80359a9c AC |
1297 | return firm_send_command(port, WHITEHEAT_SET_RTS, |
1298 | (__u8 *)&rts_command, sizeof(rts_command)); | |
1da177e4 LT |
1299 | } |
1300 | ||
1301 | ||
80359a9c AC |
1302 | static int firm_set_dtr(struct usb_serial_port *port, __u8 onoff) |
1303 | { | |
1da177e4 LT |
1304 | struct whiteheat_set_rdb dtr_command; |
1305 | ||
1306 | dtr_command.port = port->number - port->serial->minor + 1; | |
1307 | dtr_command.state = onoff; | |
72e27412 | 1308 | return firm_send_command(port, WHITEHEAT_SET_DTR, |
80359a9c | 1309 | (__u8 *)&dtr_command, sizeof(dtr_command)); |
1da177e4 LT |
1310 | } |
1311 | ||
1312 | ||
80359a9c AC |
1313 | static int firm_set_break(struct usb_serial_port *port, __u8 onoff) |
1314 | { | |
1da177e4 LT |
1315 | struct whiteheat_set_rdb break_command; |
1316 | ||
1317 | break_command.port = port->number - port->serial->minor + 1; | |
1318 | break_command.state = onoff; | |
72e27412 | 1319 | return firm_send_command(port, WHITEHEAT_SET_BREAK, |
80359a9c | 1320 | (__u8 *)&break_command, sizeof(break_command)); |
1da177e4 LT |
1321 | } |
1322 | ||
1323 | ||
80359a9c AC |
1324 | static int firm_purge(struct usb_serial_port *port, __u8 rxtx) |
1325 | { | |
1da177e4 LT |
1326 | struct whiteheat_purge purge_command; |
1327 | ||
1328 | purge_command.port = port->number - port->serial->minor + 1; | |
1329 | purge_command.what = rxtx; | |
80359a9c AC |
1330 | return firm_send_command(port, WHITEHEAT_PURGE, |
1331 | (__u8 *)&purge_command, sizeof(purge_command)); | |
1da177e4 LT |
1332 | } |
1333 | ||
1334 | ||
80359a9c AC |
1335 | static int firm_get_dtr_rts(struct usb_serial_port *port) |
1336 | { | |
1da177e4 LT |
1337 | struct whiteheat_simple get_dr_command; |
1338 | ||
1339 | get_dr_command.port = port->number - port->serial->minor + 1; | |
80359a9c AC |
1340 | return firm_send_command(port, WHITEHEAT_GET_DTR_RTS, |
1341 | (__u8 *)&get_dr_command, sizeof(get_dr_command)); | |
1da177e4 LT |
1342 | } |
1343 | ||
1344 | ||
80359a9c AC |
1345 | static int firm_report_tx_done(struct usb_serial_port *port) |
1346 | { | |
1da177e4 LT |
1347 | struct whiteheat_simple close_command; |
1348 | ||
1349 | close_command.port = port->number - port->serial->minor + 1; | |
80359a9c AC |
1350 | return firm_send_command(port, WHITEHEAT_REPORT_TX_DONE, |
1351 | (__u8 *)&close_command, sizeof(close_command)); | |
1da177e4 LT |
1352 | } |
1353 | ||
1354 | ||
1355 | /***************************************************************************** | |
1356 | * Connect Tech's White Heat utility functions | |
1357 | *****************************************************************************/ | |
1358 | static int start_command_port(struct usb_serial *serial) | |
1359 | { | |
1360 | struct usb_serial_port *command_port; | |
1361 | struct whiteheat_command_private *command_info; | |
1da177e4 | 1362 | int retval = 0; |
80359a9c | 1363 | |
1da177e4 LT |
1364 | command_port = serial->port[COMMAND_PORT]; |
1365 | command_info = usb_get_serial_port_data(command_port); | |
08a2b3b6 | 1366 | mutex_lock(&command_info->mutex); |
1da177e4 LT |
1367 | if (!command_info->port_running) { |
1368 | /* Work around HCD bugs */ | |
1369 | usb_clear_halt(serial->dev, command_port->read_urb->pipe); | |
1370 | ||
1371 | command_port->read_urb->dev = serial->dev; | |
1372 | retval = usb_submit_urb(command_port->read_urb, GFP_KERNEL); | |
1373 | if (retval) { | |
194343d9 GKH |
1374 | dev_err(&serial->dev->dev, |
1375 | "%s - failed submitting read urb, error %d\n", | |
1376 | __func__, retval); | |
1da177e4 LT |
1377 | goto exit; |
1378 | } | |
1379 | } | |
1380 | command_info->port_running++; | |
1381 | ||
1382 | exit: | |
08a2b3b6 | 1383 | mutex_unlock(&command_info->mutex); |
1da177e4 LT |
1384 | return retval; |
1385 | } | |
1386 | ||
1387 | ||
1388 | static void stop_command_port(struct usb_serial *serial) | |
1389 | { | |
1390 | struct usb_serial_port *command_port; | |
1391 | struct whiteheat_command_private *command_info; | |
1da177e4 LT |
1392 | |
1393 | command_port = serial->port[COMMAND_PORT]; | |
1394 | command_info = usb_get_serial_port_data(command_port); | |
08a2b3b6 | 1395 | mutex_lock(&command_info->mutex); |
1da177e4 LT |
1396 | command_info->port_running--; |
1397 | if (!command_info->port_running) | |
1398 | usb_kill_urb(command_port->read_urb); | |
08a2b3b6 | 1399 | mutex_unlock(&command_info->mutex); |
1da177e4 LT |
1400 | } |
1401 | ||
1402 | ||
1403 | static int start_port_read(struct usb_serial_port *port) | |
1404 | { | |
1405 | struct whiteheat_private *info = usb_get_serial_port_data(port); | |
1406 | struct whiteheat_urb_wrap *wrap; | |
1407 | struct urb *urb; | |
1408 | int retval = 0; | |
1409 | unsigned long flags; | |
1410 | struct list_head *tmp; | |
1411 | struct list_head *tmp2; | |
1412 | ||
1413 | spin_lock_irqsave(&info->lock, flags); | |
1414 | ||
1415 | list_for_each_safe(tmp, tmp2, &info->rx_urbs_free) { | |
1416 | list_del(tmp); | |
1417 | wrap = list_entry(tmp, struct whiteheat_urb_wrap, list); | |
1418 | urb = wrap->urb; | |
1419 | urb->dev = port->serial->dev; | |
08a2b3b6 | 1420 | spin_unlock_irqrestore(&info->lock, flags); |
1da177e4 LT |
1421 | retval = usb_submit_urb(urb, GFP_KERNEL); |
1422 | if (retval) { | |
08a2b3b6 | 1423 | spin_lock_irqsave(&info->lock, flags); |
1da177e4 LT |
1424 | list_add(tmp, &info->rx_urbs_free); |
1425 | list_for_each_safe(tmp, tmp2, &info->rx_urbs_submitted) { | |
1426 | wrap = list_entry(tmp, struct whiteheat_urb_wrap, list); | |
1427 | urb = wrap->urb; | |
08a2b3b6 ON |
1428 | list_del(tmp); |
1429 | spin_unlock_irqrestore(&info->lock, flags); | |
1da177e4 | 1430 | usb_kill_urb(urb); |
08a2b3b6 ON |
1431 | spin_lock_irqsave(&info->lock, flags); |
1432 | list_add(tmp, &info->rx_urbs_free); | |
1da177e4 LT |
1433 | } |
1434 | break; | |
1435 | } | |
08a2b3b6 | 1436 | spin_lock_irqsave(&info->lock, flags); |
1da177e4 LT |
1437 | list_add(tmp, &info->rx_urbs_submitted); |
1438 | } | |
1439 | ||
1440 | spin_unlock_irqrestore(&info->lock, flags); | |
1441 | ||
1442 | return retval; | |
1443 | } | |
1444 | ||
1445 | ||
80359a9c AC |
1446 | static struct whiteheat_urb_wrap *urb_to_wrap(struct urb *urb, |
1447 | struct list_head *head) | |
1da177e4 LT |
1448 | { |
1449 | struct whiteheat_urb_wrap *wrap; | |
1450 | struct list_head *tmp; | |
1451 | ||
1452 | list_for_each(tmp, head) { | |
1453 | wrap = list_entry(tmp, struct whiteheat_urb_wrap, list); | |
1454 | if (wrap->urb == urb) | |
1455 | return wrap; | |
1456 | } | |
1457 | ||
1458 | return NULL; | |
1459 | } | |
1460 | ||
1461 | ||
1462 | static struct list_head *list_first(struct list_head *head) | |
1463 | { | |
1464 | return head->next; | |
1465 | } | |
1466 | ||
1467 | ||
c4028958 | 1468 | static void rx_data_softint(struct work_struct *work) |
1da177e4 | 1469 | { |
c4028958 DH |
1470 | struct whiteheat_private *info = |
1471 | container_of(work, struct whiteheat_private, rx_work); | |
1472 | struct usb_serial_port *port = info->port; | |
4a90f09b | 1473 | struct tty_struct *tty = tty_port_tty_get(&port->port); |
1da177e4 LT |
1474 | struct whiteheat_urb_wrap *wrap; |
1475 | struct urb *urb; | |
1476 | unsigned long flags; | |
1477 | struct list_head *tmp; | |
1478 | struct list_head *tmp2; | |
1479 | int result; | |
1480 | int sent = 0; | |
1481 | ||
1482 | spin_lock_irqsave(&info->lock, flags); | |
1483 | if (info->flags & THROTTLED) { | |
1484 | spin_unlock_irqrestore(&info->lock, flags); | |
4a90f09b | 1485 | goto out; |
1da177e4 LT |
1486 | } |
1487 | ||
1488 | list_for_each_safe(tmp, tmp2, &info->rx_urb_q) { | |
1489 | list_del(tmp); | |
1490 | spin_unlock_irqrestore(&info->lock, flags); | |
1491 | ||
1492 | wrap = list_entry(tmp, struct whiteheat_urb_wrap, list); | |
1493 | urb = wrap->urb; | |
1494 | ||
1495 | if (tty && urb->actual_length) { | |
80359a9c AC |
1496 | int len = tty_buffer_request_room(tty, |
1497 | urb->actual_length); | |
33f0f88f AC |
1498 | /* This stuff can go away now I suspect */ |
1499 | if (unlikely(len < urb->actual_length)) { | |
1da177e4 LT |
1500 | spin_lock_irqsave(&info->lock, flags); |
1501 | list_add(tmp, &info->rx_urb_q); | |
1502 | spin_unlock_irqrestore(&info->lock, flags); | |
1503 | tty_flip_buffer_push(tty); | |
1504 | schedule_work(&info->rx_work); | |
4a90f09b | 1505 | goto out; |
1da177e4 | 1506 | } |
33f0f88f AC |
1507 | tty_insert_flip_string(tty, urb->transfer_buffer, len); |
1508 | sent += len; | |
1da177e4 LT |
1509 | } |
1510 | ||
1511 | urb->dev = port->serial->dev; | |
1512 | result = usb_submit_urb(urb, GFP_ATOMIC); | |
1513 | if (result) { | |
194343d9 GKH |
1514 | dev_err(&port->dev, |
1515 | "%s - failed resubmitting read urb, error %d\n", | |
80359a9c | 1516 | __func__, result); |
1da177e4 LT |
1517 | spin_lock_irqsave(&info->lock, flags); |
1518 | list_add(tmp, &info->rx_urbs_free); | |
1519 | continue; | |
1520 | } | |
1521 | ||
1522 | spin_lock_irqsave(&info->lock, flags); | |
1523 | list_add(tmp, &info->rx_urbs_submitted); | |
1524 | } | |
1525 | spin_unlock_irqrestore(&info->lock, flags); | |
1526 | ||
1527 | if (sent) | |
1528 | tty_flip_buffer_push(tty); | |
4a90f09b AC |
1529 | out: |
1530 | tty_kref_put(tty); | |
1da177e4 LT |
1531 | } |
1532 | ||
1533 | ||
1534 | /***************************************************************************** | |
1535 | * Connect Tech's White Heat module functions | |
1536 | *****************************************************************************/ | |
80359a9c | 1537 | static int __init whiteheat_init(void) |
1da177e4 LT |
1538 | { |
1539 | int retval; | |
1540 | retval = usb_serial_register(&whiteheat_fake_device); | |
1541 | if (retval) | |
1542 | goto failed_fake_register; | |
1543 | retval = usb_serial_register(&whiteheat_device); | |
1544 | if (retval) | |
1545 | goto failed_device_register; | |
1546 | retval = usb_register(&whiteheat_driver); | |
1547 | if (retval) | |
1548 | goto failed_usb_register; | |
c197a8db GKH |
1549 | printk(KERN_INFO KBUILD_MODNAME ": " DRIVER_VERSION ":" |
1550 | DRIVER_DESC "\n"); | |
1da177e4 LT |
1551 | return 0; |
1552 | failed_usb_register: | |
1553 | usb_serial_deregister(&whiteheat_device); | |
1554 | failed_device_register: | |
1555 | usb_serial_deregister(&whiteheat_fake_device); | |
1556 | failed_fake_register: | |
1557 | return retval; | |
1558 | } | |
1559 | ||
1560 | ||
80359a9c | 1561 | static void __exit whiteheat_exit(void) |
1da177e4 | 1562 | { |
80359a9c AC |
1563 | usb_deregister(&whiteheat_driver); |
1564 | usb_serial_deregister(&whiteheat_fake_device); | |
1565 | usb_serial_deregister(&whiteheat_device); | |
1da177e4 LT |
1566 | } |
1567 | ||
1568 | ||
1569 | module_init(whiteheat_init); | |
1570 | module_exit(whiteheat_exit); | |
1571 | ||
80359a9c AC |
1572 | MODULE_AUTHOR(DRIVER_AUTHOR); |
1573 | MODULE_DESCRIPTION(DRIVER_DESC); | |
1da177e4 LT |
1574 | MODULE_LICENSE("GPL"); |
1575 | ||
ec6752f5 DW |
1576 | MODULE_FIRMWARE("whiteheat.fw"); |
1577 | MODULE_FIRMWARE("whiteheat_loader.fw"); | |
1578 | ||
1da177e4 LT |
1579 | module_param(urb_pool_size, int, 0); |
1580 | MODULE_PARM_DESC(urb_pool_size, "Number of urbs to use for buffering"); | |
1581 | ||
1582 | module_param(debug, bool, S_IRUGO | S_IWUSR); | |
1583 | MODULE_PARM_DESC(debug, "Debug enabled or not"); |