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 AC |
146 | static int whiteheat_attach(struct usb_serial *serial); |
147 | static void whiteheat_shutdown(struct usb_serial *serial); | |
148 | static int whiteheat_open(struct tty_struct *tty, | |
149 | struct usb_serial_port *port, struct file *filp); | |
150 | static void whiteheat_close(struct tty_struct *tty, | |
151 | struct usb_serial_port *port, struct file *filp); | |
152 | static int whiteheat_write(struct tty_struct *tty, | |
153 | struct usb_serial_port *port, | |
154 | const unsigned char *buf, int count); | |
155 | static int whiteheat_write_room(struct tty_struct *tty); | |
156 | static int whiteheat_ioctl(struct tty_struct *tty, struct file *file, | |
157 | unsigned int cmd, unsigned long arg); | |
158 | static void whiteheat_set_termios(struct tty_struct *tty, | |
159 | struct usb_serial_port *port, struct ktermios *old); | |
160 | static int whiteheat_tiocmget(struct tty_struct *tty, struct file *file); | |
161 | static int whiteheat_tiocmset(struct tty_struct *tty, struct file *file, | |
162 | unsigned int set, unsigned int clear); | |
163 | static void whiteheat_break_ctl(struct tty_struct *tty, int break_state); | |
164 | static int whiteheat_chars_in_buffer(struct tty_struct *tty); | |
165 | static void whiteheat_throttle(struct tty_struct *tty); | |
166 | static void whiteheat_unthrottle(struct tty_struct *tty); | |
167 | static void whiteheat_read_callback(struct urb *urb); | |
168 | static void whiteheat_write_callback(struct urb *urb); | |
1da177e4 | 169 | |
ea65370d | 170 | static struct usb_serial_driver whiteheat_fake_device = { |
18fcac35 GKH |
171 | .driver = { |
172 | .owner = THIS_MODULE, | |
269bda1c | 173 | .name = "whiteheatnofirm", |
18fcac35 | 174 | }, |
269bda1c | 175 | .description = "Connect Tech - WhiteHEAT - (prerenumeration)", |
d9b1b787 | 176 | .usb_driver = &whiteheat_driver, |
1da177e4 | 177 | .id_table = id_table_prerenumeration, |
1da177e4 LT |
178 | .num_ports = 1, |
179 | .probe = whiteheat_firmware_download, | |
180 | .attach = whiteheat_firmware_attach, | |
181 | }; | |
182 | ||
ea65370d | 183 | static struct usb_serial_driver whiteheat_device = { |
18fcac35 GKH |
184 | .driver = { |
185 | .owner = THIS_MODULE, | |
269bda1c | 186 | .name = "whiteheat", |
18fcac35 | 187 | }, |
269bda1c | 188 | .description = "Connect Tech - WhiteHEAT", |
d9b1b787 | 189 | .usb_driver = &whiteheat_driver, |
1da177e4 | 190 | .id_table = id_table_std, |
1da177e4 LT |
191 | .num_ports = 4, |
192 | .attach = whiteheat_attach, | |
193 | .shutdown = whiteheat_shutdown, | |
194 | .open = whiteheat_open, | |
195 | .close = whiteheat_close, | |
196 | .write = whiteheat_write, | |
197 | .write_room = whiteheat_write_room, | |
198 | .ioctl = whiteheat_ioctl, | |
199 | .set_termios = whiteheat_set_termios, | |
200 | .break_ctl = whiteheat_break_ctl, | |
201 | .tiocmget = whiteheat_tiocmget, | |
202 | .tiocmset = whiteheat_tiocmset, | |
203 | .chars_in_buffer = whiteheat_chars_in_buffer, | |
204 | .throttle = whiteheat_throttle, | |
205 | .unthrottle = whiteheat_unthrottle, | |
206 | .read_bulk_callback = whiteheat_read_callback, | |
207 | .write_bulk_callback = whiteheat_write_callback, | |
208 | }; | |
209 | ||
210 | ||
211 | struct whiteheat_command_private { | |
08a2b3b6 | 212 | struct mutex mutex; |
1da177e4 LT |
213 | __u8 port_running; |
214 | __u8 command_finished; | |
80359a9c AC |
215 | wait_queue_head_t wait_command; /* for handling sleeping whilst |
216 | waiting for a command to | |
217 | finish */ | |
1da177e4 LT |
218 | __u8 result_buffer[64]; |
219 | }; | |
220 | ||
221 | ||
222 | #define THROTTLED 0x01 | |
223 | #define ACTUALLY_THROTTLED 0x02 | |
224 | ||
225 | static int urb_pool_size = 8; | |
226 | ||
227 | struct whiteheat_urb_wrap { | |
228 | struct list_head list; | |
229 | struct urb *urb; | |
230 | }; | |
231 | ||
232 | struct whiteheat_private { | |
233 | spinlock_t lock; | |
234 | __u8 flags; | |
a5b6f60c | 235 | __u8 mcr; /* FIXME: no locking on mcr */ |
1da177e4 LT |
236 | struct list_head rx_urbs_free; |
237 | struct list_head rx_urbs_submitted; | |
238 | struct list_head rx_urb_q; | |
239 | struct work_struct rx_work; | |
c4028958 | 240 | struct usb_serial_port *port; |
1da177e4 LT |
241 | struct list_head tx_urbs_free; |
242 | struct list_head tx_urbs_submitted; | |
08a2b3b6 | 243 | struct mutex deathwarrant; |
1da177e4 LT |
244 | }; |
245 | ||
246 | ||
247 | /* local function prototypes */ | |
248 | static int start_command_port(struct usb_serial *serial); | |
249 | static void stop_command_port(struct usb_serial *serial); | |
7d12e780 DH |
250 | static void command_port_write_callback(struct urb *urb); |
251 | static void command_port_read_callback(struct urb *urb); | |
1da177e4 LT |
252 | |
253 | static int start_port_read(struct usb_serial_port *port); | |
80359a9c AC |
254 | static struct whiteheat_urb_wrap *urb_to_wrap(struct urb *urb, |
255 | struct list_head *head); | |
1da177e4 | 256 | static struct list_head *list_first(struct list_head *head); |
c4028958 | 257 | static void rx_data_softint(struct work_struct *work); |
1da177e4 | 258 | |
80359a9c AC |
259 | static int firm_send_command(struct usb_serial_port *port, __u8 command, |
260 | __u8 *data, __u8 datasize); | |
1da177e4 LT |
261 | static int firm_open(struct usb_serial_port *port); |
262 | static int firm_close(struct usb_serial_port *port); | |
95da310e | 263 | static int firm_setup_port(struct tty_struct *tty); |
1da177e4 LT |
264 | static int firm_set_rts(struct usb_serial_port *port, __u8 onoff); |
265 | static int firm_set_dtr(struct usb_serial_port *port, __u8 onoff); | |
266 | static int firm_set_break(struct usb_serial_port *port, __u8 onoff); | |
267 | static int firm_purge(struct usb_serial_port *port, __u8 rxtx); | |
268 | static int firm_get_dtr_rts(struct usb_serial_port *port); | |
269 | static int firm_report_tx_done(struct usb_serial_port *port); | |
270 | ||
271 | ||
272 | #define COMMAND_PORT 4 | |
273 | #define COMMAND_TIMEOUT (2*HZ) /* 2 second timeout for a command */ | |
274 | #define COMMAND_TIMEOUT_MS 2000 | |
275 | #define CLOSING_DELAY (30 * HZ) | |
276 | ||
277 | ||
278 | /***************************************************************************** | |
279 | * Connect Tech's White Heat prerenumeration driver functions | |
280 | *****************************************************************************/ | |
281 | ||
282 | /* steps to download the firmware to the WhiteHEAT device: | |
283 | - hold the reset (by writing to the reset bit of the CPUCS register) | |
284 | - download the VEND_AX.HEX file to the chip using VENDOR_REQUEST-ANCHOR_LOAD | |
285 | - release the reset (by writing to the CPUCS register) | |
286 | - download the WH.HEX file for all addresses greater than 0x1b3f using | |
287 | VENDOR_REQUEST-ANCHOR_EXTERNAL_RAM_LOAD | |
288 | - hold the reset | |
289 | - download the WH.HEX file for all addresses less than 0x1b40 using | |
290 | VENDOR_REQUEST_ANCHOR_LOAD | |
291 | - release the reset | |
292 | - device renumerated itself and comes up as new device id with all | |
293 | firmware download completed. | |
294 | */ | |
80359a9c AC |
295 | static int whiteheat_firmware_download(struct usb_serial *serial, |
296 | const struct usb_device_id *id) | |
1da177e4 | 297 | { |
ec6752f5 DW |
298 | int response, ret = -ENOENT; |
299 | const struct firmware *loader_fw = NULL, *firmware_fw = NULL; | |
300 | const struct ihex_binrec *record; | |
301 | ||
441b62c1 | 302 | dbg("%s", __func__); |
ec6752f5 DW |
303 | |
304 | if (request_ihex_firmware(&firmware_fw, "whiteheat.fw", | |
305 | &serial->dev->dev)) { | |
306 | err("%s - request \"whiteheat.fw\" failed", __func__); | |
307 | goto out; | |
308 | } | |
309 | if (request_ihex_firmware(&loader_fw, "whiteheat_loader.fw", | |
310 | &serial->dev->dev)) { | |
311 | err("%s - request \"whiteheat_loader.fw\" failed", __func__); | |
312 | goto out; | |
313 | } | |
314 | ret = 0; | |
1da177e4 LT |
315 | response = ezusb_set_reset (serial, 1); |
316 | ||
ec6752f5 DW |
317 | record = (const struct ihex_binrec *)loader_fw->data; |
318 | while (record) { | |
319 | response = ezusb_writememory (serial, be32_to_cpu(record->addr), | |
320 | (unsigned char *)record->data, | |
321 | be16_to_cpu(record->len), 0xa0); | |
1da177e4 LT |
322 | if (response < 0) { |
323 | err("%s - ezusb_writememory failed for loader (%d %04X %p %d)", | |
ec6752f5 DW |
324 | __func__, response, be32_to_cpu(record->addr), |
325 | record->data, be16_to_cpu(record->len)); | |
1da177e4 LT |
326 | break; |
327 | } | |
ec6752f5 | 328 | record = ihex_next_binrec(record); |
1da177e4 LT |
329 | } |
330 | ||
80359a9c | 331 | response = ezusb_set_reset(serial, 0); |
1da177e4 | 332 | |
ec6752f5 DW |
333 | record = (const struct ihex_binrec *)firmware_fw->data; |
334 | while (record && be32_to_cpu(record->addr) < 0x1b40) | |
335 | record = ihex_next_binrec(record); | |
336 | while (record) { | |
337 | response = ezusb_writememory (serial, be32_to_cpu(record->addr), | |
338 | (unsigned char *)record->data, | |
339 | be16_to_cpu(record->len), 0xa3); | |
1da177e4 LT |
340 | if (response < 0) { |
341 | err("%s - ezusb_writememory failed for first firmware step (%d %04X %p %d)", | |
ec6752f5 DW |
342 | __func__, response, be32_to_cpu(record->addr), |
343 | record->data, be16_to_cpu(record->len)); | |
1da177e4 LT |
344 | break; |
345 | } | |
346 | ++record; | |
347 | } | |
80359a9c AC |
348 | |
349 | response = ezusb_set_reset(serial, 1); | |
1da177e4 | 350 | |
ec6752f5 DW |
351 | record = (const struct ihex_binrec *)firmware_fw->data; |
352 | while (record && be32_to_cpu(record->addr) < 0x1b40) { | |
353 | response = ezusb_writememory (serial, be32_to_cpu(record->addr), | |
354 | (unsigned char *)record->data, | |
355 | be16_to_cpu(record->len), 0xa0); | |
1da177e4 LT |
356 | if (response < 0) { |
357 | err("%s - ezusb_writememory failed for second firmware step (%d %04X %p %d)", | |
ec6752f5 DW |
358 | __func__, response, be32_to_cpu(record->addr), |
359 | record->data, be16_to_cpu(record->len)); | |
1da177e4 LT |
360 | break; |
361 | } | |
362 | ++record; | |
363 | } | |
ec6752f5 | 364 | ret = 0; |
1da177e4 | 365 | response = ezusb_set_reset (serial, 0); |
ec6752f5 DW |
366 | out: |
367 | release_firmware(loader_fw); | |
368 | release_firmware(firmware_fw); | |
369 | return ret; | |
1da177e4 LT |
370 | } |
371 | ||
372 | ||
80359a9c | 373 | static int whiteheat_firmware_attach(struct usb_serial *serial) |
1da177e4 LT |
374 | { |
375 | /* We want this device to fail to have a driver assigned to it */ | |
376 | return 1; | |
377 | } | |
378 | ||
379 | ||
380 | /***************************************************************************** | |
381 | * Connect Tech's White Heat serial driver functions | |
382 | *****************************************************************************/ | |
80359a9c | 383 | static int whiteheat_attach(struct usb_serial *serial) |
1da177e4 LT |
384 | { |
385 | struct usb_serial_port *command_port; | |
386 | struct whiteheat_command_private *command_info; | |
387 | struct usb_serial_port *port; | |
388 | struct whiteheat_private *info; | |
389 | struct whiteheat_hw_info *hw_info; | |
390 | int pipe; | |
391 | int ret; | |
392 | int alen; | |
393 | __u8 *command; | |
394 | __u8 *result; | |
395 | int i; | |
396 | int j; | |
397 | struct urb *urb; | |
398 | int buf_size; | |
399 | struct whiteheat_urb_wrap *wrap; | |
400 | struct list_head *tmp; | |
401 | ||
402 | command_port = serial->port[COMMAND_PORT]; | |
403 | ||
80359a9c AC |
404 | pipe = usb_sndbulkpipe(serial->dev, |
405 | command_port->bulk_out_endpointAddress); | |
1da177e4 LT |
406 | command = kmalloc(2, GFP_KERNEL); |
407 | if (!command) | |
408 | goto no_command_buffer; | |
409 | command[0] = WHITEHEAT_GET_HW_INFO; | |
410 | command[1] = 0; | |
80359a9c | 411 | |
1da177e4 LT |
412 | result = kmalloc(sizeof(*hw_info) + 1, GFP_KERNEL); |
413 | if (!result) | |
414 | goto no_result_buffer; | |
415 | /* | |
416 | * When the module is reloaded the firmware is still there and | |
417 | * the endpoints are still in the usb core unchanged. This is the | |
80359a9c AC |
418 | * unlinking bug in disguise. Same for the call below. |
419 | */ | |
1da177e4 | 420 | usb_clear_halt(serial->dev, pipe); |
80359a9c AC |
421 | ret = usb_bulk_msg(serial->dev, pipe, command, 2, |
422 | &alen, COMMAND_TIMEOUT_MS); | |
1da177e4 | 423 | if (ret) { |
80359a9c AC |
424 | err("%s: Couldn't send command [%d]", |
425 | serial->type->description, ret); | |
1da177e4 | 426 | goto no_firmware; |
09fd6bc8 | 427 | } else if (alen != 2) { |
80359a9c AC |
428 | err("%s: Send command incomplete [%d]", |
429 | serial->type->description, alen); | |
1da177e4 LT |
430 | goto no_firmware; |
431 | } | |
432 | ||
80359a9c AC |
433 | pipe = usb_rcvbulkpipe(serial->dev, |
434 | command_port->bulk_in_endpointAddress); | |
1da177e4 LT |
435 | /* See the comment on the usb_clear_halt() above */ |
436 | usb_clear_halt(serial->dev, pipe); | |
80359a9c AC |
437 | ret = usb_bulk_msg(serial->dev, pipe, result, |
438 | sizeof(*hw_info) + 1, &alen, COMMAND_TIMEOUT_MS); | |
1da177e4 | 439 | if (ret) { |
80359a9c AC |
440 | err("%s: Couldn't get results [%d]", |
441 | serial->type->description, ret); | |
1da177e4 | 442 | goto no_firmware; |
09fd6bc8 | 443 | } else if (alen != sizeof(*hw_info) + 1) { |
80359a9c AC |
444 | err("%s: Get results incomplete [%d]", |
445 | serial->type->description, alen); | |
1da177e4 LT |
446 | goto no_firmware; |
447 | } else if (result[0] != command[0]) { | |
80359a9c AC |
448 | err("%s: Command failed [%d]", |
449 | serial->type->description, result[0]); | |
1da177e4 LT |
450 | goto no_firmware; |
451 | } | |
452 | ||
453 | hw_info = (struct whiteheat_hw_info *)&result[1]; | |
454 | ||
269bda1c | 455 | info("%s: Driver %s: Firmware v%d.%02d", serial->type->description, |
1da177e4 LT |
456 | DRIVER_VERSION, hw_info->sw_major_rev, hw_info->sw_minor_rev); |
457 | ||
458 | for (i = 0; i < serial->num_ports; i++) { | |
459 | port = serial->port[i]; | |
460 | ||
5cbded58 | 461 | info = kmalloc(sizeof(struct whiteheat_private), GFP_KERNEL); |
1da177e4 | 462 | if (info == NULL) { |
80359a9c AC |
463 | err("%s: Out of memory for port structures\n", |
464 | serial->type->description); | |
1da177e4 LT |
465 | goto no_private; |
466 | } | |
467 | ||
468 | spin_lock_init(&info->lock); | |
08a2b3b6 | 469 | mutex_init(&info->deathwarrant); |
1da177e4 LT |
470 | info->flags = 0; |
471 | info->mcr = 0; | |
c4028958 DH |
472 | INIT_WORK(&info->rx_work, rx_data_softint); |
473 | info->port = port; | |
1da177e4 LT |
474 | |
475 | INIT_LIST_HEAD(&info->rx_urbs_free); | |
476 | INIT_LIST_HEAD(&info->rx_urbs_submitted); | |
477 | INIT_LIST_HEAD(&info->rx_urb_q); | |
478 | INIT_LIST_HEAD(&info->tx_urbs_free); | |
479 | INIT_LIST_HEAD(&info->tx_urbs_submitted); | |
480 | ||
481 | for (j = 0; j < urb_pool_size; j++) { | |
482 | urb = usb_alloc_urb(0, GFP_KERNEL); | |
483 | if (!urb) { | |
484 | err("No free urbs available"); | |
485 | goto no_rx_urb; | |
486 | } | |
487 | buf_size = port->read_urb->transfer_buffer_length; | |
488 | urb->transfer_buffer = kmalloc(buf_size, GFP_KERNEL); | |
489 | if (!urb->transfer_buffer) { | |
490 | err("Couldn't allocate urb buffer"); | |
491 | goto no_rx_buf; | |
492 | } | |
493 | wrap = kmalloc(sizeof(*wrap), GFP_KERNEL); | |
494 | if (!wrap) { | |
495 | err("Couldn't allocate urb wrapper"); | |
496 | goto no_rx_wrap; | |
497 | } | |
498 | usb_fill_bulk_urb(urb, serial->dev, | |
499 | usb_rcvbulkpipe(serial->dev, | |
500 | port->bulk_in_endpointAddress), | |
501 | urb->transfer_buffer, buf_size, | |
502 | whiteheat_read_callback, port); | |
503 | wrap->urb = urb; | |
504 | list_add(&wrap->list, &info->rx_urbs_free); | |
505 | ||
506 | urb = usb_alloc_urb(0, GFP_KERNEL); | |
507 | if (!urb) { | |
508 | err("No free urbs available"); | |
509 | goto no_tx_urb; | |
510 | } | |
511 | buf_size = port->write_urb->transfer_buffer_length; | |
512 | urb->transfer_buffer = kmalloc(buf_size, GFP_KERNEL); | |
513 | if (!urb->transfer_buffer) { | |
514 | err("Couldn't allocate urb buffer"); | |
515 | goto no_tx_buf; | |
516 | } | |
517 | wrap = kmalloc(sizeof(*wrap), GFP_KERNEL); | |
518 | if (!wrap) { | |
519 | err("Couldn't allocate urb wrapper"); | |
520 | goto no_tx_wrap; | |
521 | } | |
522 | usb_fill_bulk_urb(urb, serial->dev, | |
523 | usb_sndbulkpipe(serial->dev, | |
524 | port->bulk_out_endpointAddress), | |
525 | urb->transfer_buffer, buf_size, | |
526 | whiteheat_write_callback, port); | |
527 | wrap->urb = urb; | |
528 | list_add(&wrap->list, &info->tx_urbs_free); | |
529 | } | |
530 | ||
531 | usb_set_serial_port_data(port, info); | |
532 | } | |
533 | ||
80359a9c AC |
534 | command_info = kmalloc(sizeof(struct whiteheat_command_private), |
535 | GFP_KERNEL); | |
1da177e4 | 536 | if (command_info == NULL) { |
80359a9c AC |
537 | err("%s: Out of memory for port structures\n", |
538 | serial->type->description); | |
1da177e4 LT |
539 | goto no_command_private; |
540 | } | |
541 | ||
08a2b3b6 | 542 | mutex_init(&command_info->mutex); |
1da177e4 LT |
543 | command_info->port_running = 0; |
544 | init_waitqueue_head(&command_info->wait_command); | |
545 | usb_set_serial_port_data(command_port, command_info); | |
546 | command_port->write_urb->complete = command_port_write_callback; | |
547 | command_port->read_urb->complete = command_port_read_callback; | |
548 | kfree(result); | |
549 | kfree(command); | |
550 | ||
551 | return 0; | |
552 | ||
553 | no_firmware: | |
554 | /* Firmware likely not running */ | |
80359a9c AC |
555 | err("%s: Unable to retrieve firmware version, try replugging\n", |
556 | serial->type->description); | |
557 | err("%s: If the firmware is not running (status led not blinking)\n", | |
558 | serial->type->description); | |
559 | err("%s: please contact support@connecttech.com\n", | |
560 | serial->type->description); | |
67ca0284 | 561 | kfree(result); |
1da177e4 LT |
562 | return -ENODEV; |
563 | ||
564 | no_command_private: | |
565 | for (i = serial->num_ports - 1; i >= 0; i--) { | |
566 | port = serial->port[i]; | |
567 | info = usb_get_serial_port_data(port); | |
568 | for (j = urb_pool_size - 1; j >= 0; j--) { | |
569 | tmp = list_first(&info->tx_urbs_free); | |
570 | list_del(tmp); | |
571 | wrap = list_entry(tmp, struct whiteheat_urb_wrap, list); | |
572 | urb = wrap->urb; | |
573 | kfree(wrap); | |
574 | no_tx_wrap: | |
575 | kfree(urb->transfer_buffer); | |
576 | no_tx_buf: | |
577 | usb_free_urb(urb); | |
578 | no_tx_urb: | |
579 | tmp = list_first(&info->rx_urbs_free); | |
580 | list_del(tmp); | |
581 | wrap = list_entry(tmp, struct whiteheat_urb_wrap, list); | |
582 | urb = wrap->urb; | |
583 | kfree(wrap); | |
584 | no_rx_wrap: | |
585 | kfree(urb->transfer_buffer); | |
586 | no_rx_buf: | |
587 | usb_free_urb(urb); | |
588 | no_rx_urb: | |
589 | ; | |
590 | } | |
591 | kfree(info); | |
592 | no_private: | |
593 | ; | |
594 | } | |
595 | kfree(result); | |
596 | no_result_buffer: | |
597 | kfree(command); | |
598 | no_command_buffer: | |
599 | return -ENOMEM; | |
600 | } | |
601 | ||
602 | ||
80359a9c | 603 | static void whiteheat_shutdown(struct usb_serial *serial) |
1da177e4 LT |
604 | { |
605 | struct usb_serial_port *command_port; | |
606 | struct usb_serial_port *port; | |
607 | struct whiteheat_private *info; | |
608 | struct whiteheat_urb_wrap *wrap; | |
609 | struct urb *urb; | |
610 | struct list_head *tmp; | |
611 | struct list_head *tmp2; | |
612 | int i; | |
613 | ||
441b62c1 | 614 | dbg("%s", __func__); |
1da177e4 LT |
615 | |
616 | /* free up our private data for our command port */ | |
617 | command_port = serial->port[COMMAND_PORT]; | |
80359a9c | 618 | kfree(usb_get_serial_port_data(command_port)); |
1da177e4 LT |
619 | |
620 | for (i = 0; i < serial->num_ports; i++) { | |
621 | port = serial->port[i]; | |
622 | info = usb_get_serial_port_data(port); | |
623 | list_for_each_safe(tmp, tmp2, &info->rx_urbs_free) { | |
624 | list_del(tmp); | |
625 | wrap = list_entry(tmp, struct whiteheat_urb_wrap, list); | |
626 | urb = wrap->urb; | |
627 | kfree(wrap); | |
628 | kfree(urb->transfer_buffer); | |
629 | usb_free_urb(urb); | |
630 | } | |
631 | list_for_each_safe(tmp, tmp2, &info->tx_urbs_free) { | |
632 | list_del(tmp); | |
633 | wrap = list_entry(tmp, struct whiteheat_urb_wrap, list); | |
634 | urb = wrap->urb; | |
635 | kfree(wrap); | |
636 | kfree(urb->transfer_buffer); | |
637 | usb_free_urb(urb); | |
638 | } | |
639 | kfree(info); | |
640 | } | |
641 | ||
642 | return; | |
643 | } | |
644 | ||
80359a9c | 645 | static int whiteheat_open(struct tty_struct *tty, |
95da310e | 646 | struct usb_serial_port *port, struct file *filp) |
1da177e4 LT |
647 | { |
648 | int retval = 0; | |
1da177e4 | 649 | |
441b62c1 | 650 | dbg("%s - port %d", __func__, port->number); |
1da177e4 LT |
651 | |
652 | retval = start_command_port(port->serial); | |
653 | if (retval) | |
654 | goto exit; | |
655 | ||
95da310e AC |
656 | if (tty) |
657 | tty->low_latency = 1; | |
1da177e4 LT |
658 | |
659 | /* send an open port command */ | |
660 | retval = firm_open(port); | |
661 | if (retval) { | |
662 | stop_command_port(port->serial); | |
663 | goto exit; | |
664 | } | |
665 | ||
666 | retval = firm_purge(port, WHITEHEAT_PURGE_RX | WHITEHEAT_PURGE_TX); | |
667 | if (retval) { | |
668 | firm_close(port); | |
669 | stop_command_port(port->serial); | |
670 | goto exit; | |
671 | } | |
672 | ||
72e27412 AC |
673 | if (tty) |
674 | firm_setup_port(tty); | |
1da177e4 LT |
675 | |
676 | /* Work around HCD bugs */ | |
677 | usb_clear_halt(port->serial->dev, port->read_urb->pipe); | |
678 | usb_clear_halt(port->serial->dev, port->write_urb->pipe); | |
679 | ||
680 | /* Start reading from the device */ | |
681 | retval = start_port_read(port); | |
682 | if (retval) { | |
80359a9c AC |
683 | err("%s - failed submitting read urb, error %d", |
684 | __func__, retval); | |
1da177e4 LT |
685 | firm_close(port); |
686 | stop_command_port(port->serial); | |
687 | goto exit; | |
688 | } | |
689 | ||
690 | exit: | |
441b62c1 | 691 | dbg("%s - exit, retval = %d", __func__, retval); |
1da177e4 LT |
692 | return retval; |
693 | } | |
694 | ||
695 | ||
95da310e | 696 | static void whiteheat_close(struct tty_struct *tty, |
80359a9c | 697 | struct usb_serial_port *port, struct file *filp) |
1da177e4 LT |
698 | { |
699 | struct whiteheat_private *info = usb_get_serial_port_data(port); | |
700 | struct whiteheat_urb_wrap *wrap; | |
701 | struct urb *urb; | |
702 | struct list_head *tmp; | |
703 | struct list_head *tmp2; | |
1da177e4 | 704 | |
441b62c1 | 705 | dbg("%s - port %d", __func__, port->number); |
e33fe4d8 ON |
706 | |
707 | mutex_lock(&port->serial->disc_mutex); | |
1da177e4 | 708 | /* filp is NULL when called from usb_serial_disconnect */ |
e33fe4d8 ON |
709 | if ((filp && (tty_hung_up_p(filp))) || port->serial->disconnected) { |
710 | mutex_unlock(&port->serial->disc_mutex); | |
1da177e4 LT |
711 | return; |
712 | } | |
e33fe4d8 | 713 | mutex_unlock(&port->serial->disc_mutex); |
1da177e4 | 714 | |
95da310e | 715 | tty->closing = 1; |
1da177e4 LT |
716 | |
717 | /* | |
718 | * Not currently in use; tty_wait_until_sent() calls | |
719 | * serial_chars_in_buffer() which deadlocks on the second semaphore | |
720 | * acquisition. This should be fixed at some point. Greg's been | |
721 | * notified. | |
722 | if ((filp->f_flags & (O_NDELAY | O_NONBLOCK)) == 0) { | |
95da310e | 723 | tty_wait_until_sent(tty, CLOSING_DELAY); |
1da177e4 LT |
724 | } |
725 | */ | |
726 | ||
95da310e AC |
727 | tty_driver_flush_buffer(tty); |
728 | tty_ldisc_flush(tty); | |
1da177e4 LT |
729 | |
730 | firm_report_tx_done(port); | |
731 | ||
732 | firm_close(port); | |
733 | ||
734 | /* shutdown our bulk reads and writes */ | |
08a2b3b6 ON |
735 | mutex_lock(&info->deathwarrant); |
736 | spin_lock_irq(&info->lock); | |
1da177e4 LT |
737 | list_for_each_safe(tmp, tmp2, &info->rx_urbs_submitted) { |
738 | wrap = list_entry(tmp, struct whiteheat_urb_wrap, list); | |
739 | urb = wrap->urb; | |
08a2b3b6 ON |
740 | list_del(tmp); |
741 | spin_unlock_irq(&info->lock); | |
1da177e4 | 742 | usb_kill_urb(urb); |
08a2b3b6 ON |
743 | spin_lock_irq(&info->lock); |
744 | list_add(tmp, &info->rx_urbs_free); | |
1da177e4 | 745 | } |
179e0917 AM |
746 | list_for_each_safe(tmp, tmp2, &info->rx_urb_q) |
747 | list_move(tmp, &info->rx_urbs_free); | |
1da177e4 LT |
748 | list_for_each_safe(tmp, tmp2, &info->tx_urbs_submitted) { |
749 | wrap = list_entry(tmp, struct whiteheat_urb_wrap, list); | |
750 | urb = wrap->urb; | |
08a2b3b6 ON |
751 | list_del(tmp); |
752 | spin_unlock_irq(&info->lock); | |
1da177e4 | 753 | usb_kill_urb(urb); |
08a2b3b6 ON |
754 | spin_lock_irq(&info->lock); |
755 | list_add(tmp, &info->tx_urbs_free); | |
1da177e4 | 756 | } |
08a2b3b6 ON |
757 | spin_unlock_irq(&info->lock); |
758 | mutex_unlock(&info->deathwarrant); | |
1da177e4 LT |
759 | |
760 | stop_command_port(port->serial); | |
761 | ||
95da310e | 762 | tty->closing = 0; |
1da177e4 LT |
763 | } |
764 | ||
765 | ||
95da310e AC |
766 | static int whiteheat_write(struct tty_struct *tty, |
767 | struct usb_serial_port *port, const unsigned char *buf, int count) | |
1da177e4 LT |
768 | { |
769 | struct usb_serial *serial = port->serial; | |
770 | struct whiteheat_private *info = usb_get_serial_port_data(port); | |
771 | struct whiteheat_urb_wrap *wrap; | |
772 | struct urb *urb; | |
773 | int result; | |
774 | int bytes; | |
775 | int sent = 0; | |
776 | unsigned long flags; | |
777 | struct list_head *tmp; | |
778 | ||
441b62c1 | 779 | dbg("%s - port %d", __func__, port->number); |
1da177e4 LT |
780 | |
781 | if (count == 0) { | |
441b62c1 | 782 | dbg("%s - write request of 0 bytes", __func__); |
1da177e4 LT |
783 | return (0); |
784 | } | |
785 | ||
786 | while (count) { | |
787 | spin_lock_irqsave(&info->lock, flags); | |
788 | if (list_empty(&info->tx_urbs_free)) { | |
789 | spin_unlock_irqrestore(&info->lock, flags); | |
790 | break; | |
791 | } | |
792 | tmp = list_first(&info->tx_urbs_free); | |
793 | list_del(tmp); | |
794 | spin_unlock_irqrestore(&info->lock, flags); | |
795 | ||
796 | wrap = list_entry(tmp, struct whiteheat_urb_wrap, list); | |
797 | urb = wrap->urb; | |
80359a9c AC |
798 | bytes = (count > port->bulk_out_size) ? |
799 | port->bulk_out_size : count; | |
800 | memcpy(urb->transfer_buffer, buf + sent, bytes); | |
1da177e4 | 801 | |
80359a9c AC |
802 | usb_serial_debug_data(debug, &port->dev, |
803 | __func__, bytes, urb->transfer_buffer); | |
1da177e4 LT |
804 | |
805 | urb->dev = serial->dev; | |
806 | urb->transfer_buffer_length = bytes; | |
807 | result = usb_submit_urb(urb, GFP_ATOMIC); | |
808 | if (result) { | |
80359a9c AC |
809 | err("%s - failed submitting write urb, error %d", |
810 | __func__, result); | |
1da177e4 LT |
811 | sent = result; |
812 | spin_lock_irqsave(&info->lock, flags); | |
813 | list_add(tmp, &info->tx_urbs_free); | |
814 | spin_unlock_irqrestore(&info->lock, flags); | |
815 | break; | |
816 | } else { | |
817 | sent += bytes; | |
818 | count -= bytes; | |
819 | spin_lock_irqsave(&info->lock, flags); | |
820 | list_add(tmp, &info->tx_urbs_submitted); | |
821 | spin_unlock_irqrestore(&info->lock, flags); | |
822 | } | |
823 | } | |
824 | ||
825 | return sent; | |
826 | } | |
827 | ||
95da310e | 828 | static int whiteheat_write_room(struct tty_struct *tty) |
1da177e4 | 829 | { |
95da310e | 830 | struct usb_serial_port *port = tty->driver_data; |
1da177e4 LT |
831 | struct whiteheat_private *info = usb_get_serial_port_data(port); |
832 | struct list_head *tmp; | |
833 | int room = 0; | |
834 | unsigned long flags; | |
835 | ||
441b62c1 | 836 | dbg("%s - port %d", __func__, port->number); |
80359a9c | 837 | |
1da177e4 LT |
838 | spin_lock_irqsave(&info->lock, flags); |
839 | list_for_each(tmp, &info->tx_urbs_free) | |
840 | room++; | |
841 | spin_unlock_irqrestore(&info->lock, flags); | |
842 | room *= port->bulk_out_size; | |
843 | ||
441b62c1 | 844 | dbg("%s - returns %d", __func__, room); |
1da177e4 LT |
845 | return (room); |
846 | } | |
847 | ||
80359a9c | 848 | static int whiteheat_tiocmget(struct tty_struct *tty, struct file *file) |
1da177e4 | 849 | { |
95da310e | 850 | struct usb_serial_port *port = tty->driver_data; |
1da177e4 LT |
851 | struct whiteheat_private *info = usb_get_serial_port_data(port); |
852 | unsigned int modem_signals = 0; | |
853 | ||
441b62c1 | 854 | dbg("%s - port %d", __func__, port->number); |
1da177e4 LT |
855 | |
856 | firm_get_dtr_rts(port); | |
857 | if (info->mcr & UART_MCR_DTR) | |
858 | modem_signals |= TIOCM_DTR; | |
859 | if (info->mcr & UART_MCR_RTS) | |
860 | modem_signals |= TIOCM_RTS; | |
861 | ||
862 | return modem_signals; | |
863 | } | |
864 | ||
80359a9c | 865 | static int whiteheat_tiocmset(struct tty_struct *tty, struct file *file, |
1da177e4 LT |
866 | unsigned int set, unsigned int clear) |
867 | { | |
95da310e | 868 | struct usb_serial_port *port = tty->driver_data; |
1da177e4 LT |
869 | struct whiteheat_private *info = usb_get_serial_port_data(port); |
870 | ||
441b62c1 | 871 | dbg("%s - port %d", __func__, port->number); |
1da177e4 LT |
872 | |
873 | if (set & TIOCM_RTS) | |
874 | info->mcr |= UART_MCR_RTS; | |
875 | if (set & TIOCM_DTR) | |
876 | info->mcr |= UART_MCR_DTR; | |
877 | ||
878 | if (clear & TIOCM_RTS) | |
879 | info->mcr &= ~UART_MCR_RTS; | |
880 | if (clear & TIOCM_DTR) | |
881 | info->mcr &= ~UART_MCR_DTR; | |
882 | ||
883 | firm_set_dtr(port, info->mcr & UART_MCR_DTR); | |
884 | firm_set_rts(port, info->mcr & UART_MCR_RTS); | |
885 | return 0; | |
886 | } | |
887 | ||
888 | ||
80359a9c AC |
889 | static int whiteheat_ioctl(struct tty_struct *tty, struct file *file, |
890 | unsigned int cmd, unsigned long arg) | |
1da177e4 | 891 | { |
95da310e | 892 | struct usb_serial_port *port = tty->driver_data; |
1da177e4 LT |
893 | struct serial_struct serstruct; |
894 | void __user *user_arg = (void __user *)arg; | |
895 | ||
441b62c1 | 896 | dbg("%s - port %d, cmd 0x%.4x", __func__, port->number, cmd); |
1da177e4 LT |
897 | |
898 | switch (cmd) { | |
80359a9c AC |
899 | case TIOCGSERIAL: |
900 | memset(&serstruct, 0, sizeof(serstruct)); | |
901 | serstruct.type = PORT_16654; | |
902 | serstruct.line = port->serial->minor; | |
903 | serstruct.port = port->number; | |
904 | serstruct.flags = ASYNC_SKIP_TEST | ASYNC_AUTO_IRQ; | |
905 | serstruct.xmit_fifo_size = port->bulk_out_size; | |
906 | serstruct.custom_divisor = 0; | |
907 | serstruct.baud_base = 460800; | |
908 | serstruct.close_delay = CLOSING_DELAY; | |
909 | serstruct.closing_wait = CLOSING_DELAY; | |
910 | ||
911 | if (copy_to_user(user_arg, &serstruct, sizeof(serstruct))) | |
912 | return -EFAULT; | |
913 | break; | |
914 | default: | |
915 | break; | |
1da177e4 LT |
916 | } |
917 | ||
918 | return -ENOIOCTLCMD; | |
919 | } | |
920 | ||
921 | ||
80359a9c AC |
922 | static void whiteheat_set_termios(struct tty_struct *tty, |
923 | struct usb_serial_port *port, struct ktermios *old_termios) | |
1da177e4 | 924 | { |
95da310e | 925 | firm_setup_port(tty); |
1da177e4 LT |
926 | } |
927 | ||
80359a9c AC |
928 | static void whiteheat_break_ctl(struct tty_struct *tty, int break_state) |
929 | { | |
95da310e | 930 | struct usb_serial_port *port = tty->driver_data; |
1da177e4 LT |
931 | firm_set_break(port, break_state); |
932 | } | |
933 | ||
934 | ||
95da310e | 935 | static int whiteheat_chars_in_buffer(struct tty_struct *tty) |
1da177e4 | 936 | { |
95da310e | 937 | struct usb_serial_port *port = tty->driver_data; |
1da177e4 LT |
938 | struct whiteheat_private *info = usb_get_serial_port_data(port); |
939 | struct list_head *tmp; | |
940 | struct whiteheat_urb_wrap *wrap; | |
941 | int chars = 0; | |
942 | unsigned long flags; | |
943 | ||
441b62c1 | 944 | dbg("%s - port %d", __func__, port->number); |
1da177e4 LT |
945 | |
946 | spin_lock_irqsave(&info->lock, flags); | |
947 | list_for_each(tmp, &info->tx_urbs_submitted) { | |
948 | wrap = list_entry(tmp, struct whiteheat_urb_wrap, list); | |
949 | chars += wrap->urb->transfer_buffer_length; | |
950 | } | |
951 | spin_unlock_irqrestore(&info->lock, flags); | |
952 | ||
80359a9c | 953 | dbg("%s - returns %d", __func__, chars); |
08a2b3b6 | 954 | return chars; |
1da177e4 LT |
955 | } |
956 | ||
957 | ||
80359a9c | 958 | static void whiteheat_throttle(struct tty_struct *tty) |
1da177e4 | 959 | { |
95da310e | 960 | struct usb_serial_port *port = tty->driver_data; |
1da177e4 LT |
961 | struct whiteheat_private *info = usb_get_serial_port_data(port); |
962 | unsigned long flags; | |
963 | ||
441b62c1 | 964 | dbg("%s - port %d", __func__, port->number); |
1da177e4 LT |
965 | |
966 | spin_lock_irqsave(&info->lock, flags); | |
967 | info->flags |= THROTTLED; | |
968 | spin_unlock_irqrestore(&info->lock, flags); | |
969 | ||
970 | return; | |
971 | } | |
972 | ||
973 | ||
80359a9c | 974 | static void whiteheat_unthrottle(struct tty_struct *tty) |
1da177e4 | 975 | { |
95da310e | 976 | struct usb_serial_port *port = tty->driver_data; |
1da177e4 LT |
977 | struct whiteheat_private *info = usb_get_serial_port_data(port); |
978 | int actually_throttled; | |
979 | unsigned long flags; | |
980 | ||
441b62c1 | 981 | dbg("%s - port %d", __func__, port->number); |
1da177e4 LT |
982 | |
983 | spin_lock_irqsave(&info->lock, flags); | |
984 | actually_throttled = info->flags & ACTUALLY_THROTTLED; | |
985 | info->flags &= ~(THROTTLED | ACTUALLY_THROTTLED); | |
986 | spin_unlock_irqrestore(&info->lock, flags); | |
987 | ||
988 | if (actually_throttled) | |
c4028958 | 989 | rx_data_softint(&info->rx_work); |
1da177e4 LT |
990 | |
991 | return; | |
992 | } | |
993 | ||
994 | ||
995 | /***************************************************************************** | |
996 | * Connect Tech's White Heat callback routines | |
997 | *****************************************************************************/ | |
08a2b3b6 | 998 | static void command_port_write_callback(struct urb *urb) |
1da177e4 | 999 | { |
05400013 GKH |
1000 | int status = urb->status; |
1001 | ||
441b62c1 | 1002 | dbg("%s", __func__); |
1da177e4 | 1003 | |
05400013 GKH |
1004 | if (status) { |
1005 | dbg("nonzero urb status: %d", status); | |
1da177e4 LT |
1006 | return; |
1007 | } | |
1008 | } | |
1009 | ||
1010 | ||
08a2b3b6 | 1011 | static void command_port_read_callback(struct urb *urb) |
1da177e4 | 1012 | { |
cdc97792 | 1013 | struct usb_serial_port *command_port = urb->context; |
1da177e4 | 1014 | struct whiteheat_command_private *command_info; |
05400013 | 1015 | int status = urb->status; |
1da177e4 LT |
1016 | unsigned char *data = urb->transfer_buffer; |
1017 | int result; | |
1da177e4 | 1018 | |
441b62c1 | 1019 | dbg("%s", __func__); |
1da177e4 | 1020 | |
08a2b3b6 ON |
1021 | command_info = usb_get_serial_port_data(command_port); |
1022 | if (!command_info) { | |
80359a9c | 1023 | dbg("%s - command_info is NULL, exiting.", __func__); |
08a2b3b6 ON |
1024 | return; |
1025 | } | |
05400013 | 1026 | if (status) { |
441b62c1 | 1027 | dbg("%s - nonzero urb status: %d", __func__, status); |
05400013 | 1028 | if (status != -ENOENT) |
08a2b3b6 ON |
1029 | command_info->command_finished = WHITEHEAT_CMD_FAILURE; |
1030 | wake_up(&command_info->wait_command); | |
1da177e4 LT |
1031 | return; |
1032 | } | |
1033 | ||
80359a9c AC |
1034 | usb_serial_debug_data(debug, &command_port->dev, |
1035 | __func__, urb->actual_length, data); | |
1da177e4 | 1036 | |
1da177e4 LT |
1037 | if (data[0] == WHITEHEAT_CMD_COMPLETE) { |
1038 | command_info->command_finished = WHITEHEAT_CMD_COMPLETE; | |
08a2b3b6 | 1039 | wake_up(&command_info->wait_command); |
1da177e4 LT |
1040 | } else if (data[0] == WHITEHEAT_CMD_FAILURE) { |
1041 | command_info->command_finished = WHITEHEAT_CMD_FAILURE; | |
08a2b3b6 | 1042 | wake_up(&command_info->wait_command); |
1da177e4 | 1043 | } else if (data[0] == WHITEHEAT_EVENT) { |
80359a9c AC |
1044 | /* These are unsolicited reports from the firmware, hence no |
1045 | waiting command to wakeup */ | |
441b62c1 | 1046 | dbg("%s - event received", __func__); |
1da177e4 | 1047 | } else if (data[0] == WHITEHEAT_GET_DTR_RTS) { |
80359a9c AC |
1048 | memcpy(command_info->result_buffer, &data[1], |
1049 | urb->actual_length - 1); | |
1da177e4 | 1050 | command_info->command_finished = WHITEHEAT_CMD_COMPLETE; |
08a2b3b6 | 1051 | wake_up(&command_info->wait_command); |
80359a9c | 1052 | } else |
441b62c1 | 1053 | dbg("%s - bad reply from firmware", __func__); |
80359a9c | 1054 | |
1da177e4 LT |
1055 | /* Continue trying to always read */ |
1056 | command_port->read_urb->dev = command_port->serial->dev; | |
1057 | result = usb_submit_urb(command_port->read_urb, GFP_ATOMIC); | |
1da177e4 | 1058 | if (result) |
80359a9c AC |
1059 | dbg("%s - failed resubmitting read urb, error %d", |
1060 | __func__, result); | |
1da177e4 LT |
1061 | } |
1062 | ||
1063 | ||
7d12e780 | 1064 | static void whiteheat_read_callback(struct urb *urb) |
1da177e4 | 1065 | { |
cdc97792 | 1066 | struct usb_serial_port *port = urb->context; |
1da177e4 LT |
1067 | struct whiteheat_urb_wrap *wrap; |
1068 | unsigned char *data = urb->transfer_buffer; | |
1069 | struct whiteheat_private *info = usb_get_serial_port_data(port); | |
05400013 | 1070 | int status = urb->status; |
1da177e4 | 1071 | |
441b62c1 | 1072 | dbg("%s - port %d", __func__, port->number); |
1da177e4 LT |
1073 | |
1074 | spin_lock(&info->lock); | |
1075 | wrap = urb_to_wrap(urb, &info->rx_urbs_submitted); | |
1076 | if (!wrap) { | |
1077 | spin_unlock(&info->lock); | |
441b62c1 | 1078 | err("%s - Not my urb!", __func__); |
1da177e4 LT |
1079 | return; |
1080 | } | |
1081 | list_del(&wrap->list); | |
1082 | spin_unlock(&info->lock); | |
1083 | ||
05400013 GKH |
1084 | if (status) { |
1085 | dbg("%s - nonzero read bulk status received: %d", | |
441b62c1 | 1086 | __func__, status); |
1da177e4 LT |
1087 | spin_lock(&info->lock); |
1088 | list_add(&wrap->list, &info->rx_urbs_free); | |
1089 | spin_unlock(&info->lock); | |
1090 | return; | |
1091 | } | |
1092 | ||
80359a9c AC |
1093 | usb_serial_debug_data(debug, &port->dev, |
1094 | __func__, urb->actual_length, data); | |
1da177e4 LT |
1095 | |
1096 | spin_lock(&info->lock); | |
1097 | list_add_tail(&wrap->list, &info->rx_urb_q); | |
1098 | if (info->flags & THROTTLED) { | |
1099 | info->flags |= ACTUALLY_THROTTLED; | |
1100 | spin_unlock(&info->lock); | |
1101 | return; | |
1102 | } | |
1103 | spin_unlock(&info->lock); | |
1104 | ||
1105 | schedule_work(&info->rx_work); | |
1106 | } | |
1107 | ||
1108 | ||
7d12e780 | 1109 | static void whiteheat_write_callback(struct urb *urb) |
1da177e4 | 1110 | { |
cdc97792 | 1111 | struct usb_serial_port *port = urb->context; |
1da177e4 LT |
1112 | struct whiteheat_private *info = usb_get_serial_port_data(port); |
1113 | struct whiteheat_urb_wrap *wrap; | |
05400013 | 1114 | int status = urb->status; |
1da177e4 | 1115 | |
441b62c1 | 1116 | dbg("%s - port %d", __func__, port->number); |
1da177e4 LT |
1117 | |
1118 | spin_lock(&info->lock); | |
1119 | wrap = urb_to_wrap(urb, &info->tx_urbs_submitted); | |
1120 | if (!wrap) { | |
1121 | spin_unlock(&info->lock); | |
441b62c1 | 1122 | err("%s - Not my urb!", __func__); |
1da177e4 LT |
1123 | return; |
1124 | } | |
179e0917 | 1125 | list_move(&wrap->list, &info->tx_urbs_free); |
1da177e4 LT |
1126 | spin_unlock(&info->lock); |
1127 | ||
05400013 GKH |
1128 | if (status) { |
1129 | dbg("%s - nonzero write bulk status received: %d", | |
441b62c1 | 1130 | __func__, status); |
1da177e4 LT |
1131 | return; |
1132 | } | |
1133 | ||
cf2c7481 | 1134 | usb_serial_port_softint(port); |
1da177e4 LT |
1135 | } |
1136 | ||
1137 | ||
1138 | /***************************************************************************** | |
1139 | * Connect Tech's White Heat firmware interface | |
1140 | *****************************************************************************/ | |
80359a9c AC |
1141 | static int firm_send_command(struct usb_serial_port *port, __u8 command, |
1142 | __u8 *data, __u8 datasize) | |
1da177e4 LT |
1143 | { |
1144 | struct usb_serial_port *command_port; | |
1145 | struct whiteheat_command_private *command_info; | |
1146 | struct whiteheat_private *info; | |
1147 | __u8 *transfer_buffer; | |
1148 | int retval = 0; | |
08a2b3b6 | 1149 | int t; |
1da177e4 | 1150 | |
441b62c1 | 1151 | dbg("%s - command %d", __func__, command); |
1da177e4 LT |
1152 | |
1153 | command_port = port->serial->port[COMMAND_PORT]; | |
1154 | command_info = usb_get_serial_port_data(command_port); | |
08a2b3b6 | 1155 | mutex_lock(&command_info->mutex); |
38c3cb5b | 1156 | command_info->command_finished = false; |
80359a9c | 1157 | |
1da177e4 LT |
1158 | transfer_buffer = (__u8 *)command_port->write_urb->transfer_buffer; |
1159 | transfer_buffer[0] = command; | |
80359a9c | 1160 | memcpy(&transfer_buffer[1], data, datasize); |
1da177e4 LT |
1161 | command_port->write_urb->transfer_buffer_length = datasize + 1; |
1162 | command_port->write_urb->dev = port->serial->dev; | |
80359a9c | 1163 | retval = usb_submit_urb(command_port->write_urb, GFP_NOIO); |
1da177e4 | 1164 | if (retval) { |
441b62c1 | 1165 | dbg("%s - submit urb failed", __func__); |
1da177e4 LT |
1166 | goto exit; |
1167 | } | |
1da177e4 LT |
1168 | |
1169 | /* wait for the command to complete */ | |
08a2b3b6 | 1170 | t = wait_event_timeout(command_info->wait_command, |
38c3cb5b | 1171 | (bool)command_info->command_finished, COMMAND_TIMEOUT); |
08a2b3b6 ON |
1172 | if (!t) |
1173 | usb_kill_urb(command_port->write_urb); | |
1da177e4 | 1174 | |
38c3cb5b | 1175 | if (command_info->command_finished == false) { |
441b62c1 | 1176 | dbg("%s - command timed out.", __func__); |
1da177e4 LT |
1177 | retval = -ETIMEDOUT; |
1178 | goto exit; | |
1179 | } | |
1180 | ||
1181 | if (command_info->command_finished == WHITEHEAT_CMD_FAILURE) { | |
441b62c1 | 1182 | dbg("%s - command failed.", __func__); |
1da177e4 LT |
1183 | retval = -EIO; |
1184 | goto exit; | |
1185 | } | |
1186 | ||
1187 | if (command_info->command_finished == WHITEHEAT_CMD_COMPLETE) { | |
441b62c1 | 1188 | dbg("%s - command completed.", __func__); |
1da177e4 | 1189 | switch (command) { |
80359a9c AC |
1190 | case WHITEHEAT_GET_DTR_RTS: |
1191 | info = usb_get_serial_port_data(port); | |
1192 | memcpy(&info->mcr, command_info->result_buffer, | |
1193 | sizeof(struct whiteheat_dr_info)); | |
1da177e4 LT |
1194 | break; |
1195 | } | |
1196 | } | |
1da177e4 | 1197 | exit: |
08a2b3b6 | 1198 | mutex_unlock(&command_info->mutex); |
1da177e4 LT |
1199 | return retval; |
1200 | } | |
1201 | ||
1202 | ||
80359a9c AC |
1203 | static int firm_open(struct usb_serial_port *port) |
1204 | { | |
1da177e4 LT |
1205 | struct whiteheat_simple open_command; |
1206 | ||
1207 | open_command.port = port->number - port->serial->minor + 1; | |
80359a9c AC |
1208 | return firm_send_command(port, WHITEHEAT_OPEN, |
1209 | (__u8 *)&open_command, sizeof(open_command)); | |
1da177e4 LT |
1210 | } |
1211 | ||
1212 | ||
80359a9c AC |
1213 | static int firm_close(struct usb_serial_port *port) |
1214 | { | |
1da177e4 LT |
1215 | struct whiteheat_simple close_command; |
1216 | ||
1217 | close_command.port = port->number - port->serial->minor + 1; | |
80359a9c AC |
1218 | return firm_send_command(port, WHITEHEAT_CLOSE, |
1219 | (__u8 *)&close_command, sizeof(close_command)); | |
1da177e4 LT |
1220 | } |
1221 | ||
1222 | ||
80359a9c AC |
1223 | static int firm_setup_port(struct tty_struct *tty) |
1224 | { | |
95da310e | 1225 | struct usb_serial_port *port = tty->driver_data; |
1da177e4 | 1226 | struct whiteheat_port_settings port_settings; |
95da310e | 1227 | unsigned int cflag = tty->termios->c_cflag; |
1da177e4 LT |
1228 | |
1229 | port_settings.port = port->number + 1; | |
1230 | ||
1231 | /* get the byte size */ | |
1232 | switch (cflag & CSIZE) { | |
80359a9c AC |
1233 | case CS5: port_settings.bits = 5; break; |
1234 | case CS6: port_settings.bits = 6; break; | |
1235 | case CS7: port_settings.bits = 7; break; | |
1236 | default: | |
1237 | case CS8: port_settings.bits = 8; break; | |
1da177e4 | 1238 | } |
441b62c1 | 1239 | dbg("%s - data bits = %d", __func__, port_settings.bits); |
80359a9c | 1240 | |
1da177e4 LT |
1241 | /* determine the parity */ |
1242 | if (cflag & PARENB) | |
1243 | if (cflag & CMSPAR) | |
1244 | if (cflag & PARODD) | |
1245 | port_settings.parity = WHITEHEAT_PAR_MARK; | |
1246 | else | |
1247 | port_settings.parity = WHITEHEAT_PAR_SPACE; | |
1248 | else | |
1249 | if (cflag & PARODD) | |
1250 | port_settings.parity = WHITEHEAT_PAR_ODD; | |
1251 | else | |
1252 | port_settings.parity = WHITEHEAT_PAR_EVEN; | |
1253 | else | |
1254 | port_settings.parity = WHITEHEAT_PAR_NONE; | |
441b62c1 | 1255 | dbg("%s - parity = %c", __func__, port_settings.parity); |
1da177e4 LT |
1256 | |
1257 | /* figure out the stop bits requested */ | |
1258 | if (cflag & CSTOPB) | |
1259 | port_settings.stop = 2; | |
1260 | else | |
1261 | port_settings.stop = 1; | |
441b62c1 | 1262 | dbg("%s - stop bits = %d", __func__, port_settings.stop); |
1da177e4 LT |
1263 | |
1264 | /* figure out the flow control settings */ | |
1265 | if (cflag & CRTSCTS) | |
80359a9c AC |
1266 | port_settings.hflow = (WHITEHEAT_HFLOW_CTS | |
1267 | WHITEHEAT_HFLOW_RTS); | |
1da177e4 LT |
1268 | else |
1269 | port_settings.hflow = WHITEHEAT_HFLOW_NONE; | |
441b62c1 | 1270 | dbg("%s - hardware flow control = %s %s %s %s", __func__, |
1da177e4 LT |
1271 | (port_settings.hflow & WHITEHEAT_HFLOW_CTS) ? "CTS" : "", |
1272 | (port_settings.hflow & WHITEHEAT_HFLOW_RTS) ? "RTS" : "", | |
1273 | (port_settings.hflow & WHITEHEAT_HFLOW_DSR) ? "DSR" : "", | |
1274 | (port_settings.hflow & WHITEHEAT_HFLOW_DTR) ? "DTR" : ""); | |
80359a9c | 1275 | |
1da177e4 | 1276 | /* determine software flow control */ |
95da310e | 1277 | if (I_IXOFF(tty)) |
1da177e4 LT |
1278 | port_settings.sflow = WHITEHEAT_SFLOW_RXTX; |
1279 | else | |
1280 | port_settings.sflow = WHITEHEAT_SFLOW_NONE; | |
441b62c1 | 1281 | dbg("%s - software flow control = %c", __func__, port_settings.sflow); |
80359a9c | 1282 | |
95da310e AC |
1283 | port_settings.xon = START_CHAR(tty); |
1284 | port_settings.xoff = STOP_CHAR(tty); | |
80359a9c AC |
1285 | dbg("%s - XON = %2x, XOFF = %2x", |
1286 | __func__, port_settings.xon, port_settings.xoff); | |
1da177e4 LT |
1287 | |
1288 | /* get the baud rate wanted */ | |
95da310e | 1289 | port_settings.baud = tty_get_baud_rate(tty); |
441b62c1 | 1290 | dbg("%s - baud rate = %d", __func__, port_settings.baud); |
1da177e4 | 1291 | |
01d1df29 | 1292 | /* fixme: should set validated settings */ |
95da310e | 1293 | tty_encode_baud_rate(tty, port_settings.baud, port_settings.baud); |
1da177e4 LT |
1294 | /* handle any settings that aren't specified in the tty structure */ |
1295 | port_settings.lloop = 0; | |
80359a9c | 1296 | |
1da177e4 | 1297 | /* now send the message to the device */ |
80359a9c AC |
1298 | return firm_send_command(port, WHITEHEAT_SETUP_PORT, |
1299 | (__u8 *)&port_settings, sizeof(port_settings)); | |
1da177e4 LT |
1300 | } |
1301 | ||
1302 | ||
80359a9c AC |
1303 | static int firm_set_rts(struct usb_serial_port *port, __u8 onoff) |
1304 | { | |
1da177e4 LT |
1305 | struct whiteheat_set_rdb rts_command; |
1306 | ||
1307 | rts_command.port = port->number - port->serial->minor + 1; | |
1308 | rts_command.state = onoff; | |
80359a9c AC |
1309 | return firm_send_command(port, WHITEHEAT_SET_RTS, |
1310 | (__u8 *)&rts_command, sizeof(rts_command)); | |
1da177e4 LT |
1311 | } |
1312 | ||
1313 | ||
80359a9c AC |
1314 | static int firm_set_dtr(struct usb_serial_port *port, __u8 onoff) |
1315 | { | |
1da177e4 LT |
1316 | struct whiteheat_set_rdb dtr_command; |
1317 | ||
1318 | dtr_command.port = port->number - port->serial->minor + 1; | |
1319 | dtr_command.state = onoff; | |
72e27412 | 1320 | return firm_send_command(port, WHITEHEAT_SET_DTR, |
80359a9c | 1321 | (__u8 *)&dtr_command, sizeof(dtr_command)); |
1da177e4 LT |
1322 | } |
1323 | ||
1324 | ||
80359a9c AC |
1325 | static int firm_set_break(struct usb_serial_port *port, __u8 onoff) |
1326 | { | |
1da177e4 LT |
1327 | struct whiteheat_set_rdb break_command; |
1328 | ||
1329 | break_command.port = port->number - port->serial->minor + 1; | |
1330 | break_command.state = onoff; | |
72e27412 | 1331 | return firm_send_command(port, WHITEHEAT_SET_BREAK, |
80359a9c | 1332 | (__u8 *)&break_command, sizeof(break_command)); |
1da177e4 LT |
1333 | } |
1334 | ||
1335 | ||
80359a9c AC |
1336 | static int firm_purge(struct usb_serial_port *port, __u8 rxtx) |
1337 | { | |
1da177e4 LT |
1338 | struct whiteheat_purge purge_command; |
1339 | ||
1340 | purge_command.port = port->number - port->serial->minor + 1; | |
1341 | purge_command.what = rxtx; | |
80359a9c AC |
1342 | return firm_send_command(port, WHITEHEAT_PURGE, |
1343 | (__u8 *)&purge_command, sizeof(purge_command)); | |
1da177e4 LT |
1344 | } |
1345 | ||
1346 | ||
80359a9c AC |
1347 | static int firm_get_dtr_rts(struct usb_serial_port *port) |
1348 | { | |
1da177e4 LT |
1349 | struct whiteheat_simple get_dr_command; |
1350 | ||
1351 | get_dr_command.port = port->number - port->serial->minor + 1; | |
80359a9c AC |
1352 | return firm_send_command(port, WHITEHEAT_GET_DTR_RTS, |
1353 | (__u8 *)&get_dr_command, sizeof(get_dr_command)); | |
1da177e4 LT |
1354 | } |
1355 | ||
1356 | ||
80359a9c AC |
1357 | static int firm_report_tx_done(struct usb_serial_port *port) |
1358 | { | |
1da177e4 LT |
1359 | struct whiteheat_simple close_command; |
1360 | ||
1361 | close_command.port = port->number - port->serial->minor + 1; | |
80359a9c AC |
1362 | return firm_send_command(port, WHITEHEAT_REPORT_TX_DONE, |
1363 | (__u8 *)&close_command, sizeof(close_command)); | |
1da177e4 LT |
1364 | } |
1365 | ||
1366 | ||
1367 | /***************************************************************************** | |
1368 | * Connect Tech's White Heat utility functions | |
1369 | *****************************************************************************/ | |
1370 | static int start_command_port(struct usb_serial *serial) | |
1371 | { | |
1372 | struct usb_serial_port *command_port; | |
1373 | struct whiteheat_command_private *command_info; | |
1da177e4 | 1374 | int retval = 0; |
80359a9c | 1375 | |
1da177e4 LT |
1376 | command_port = serial->port[COMMAND_PORT]; |
1377 | command_info = usb_get_serial_port_data(command_port); | |
08a2b3b6 | 1378 | mutex_lock(&command_info->mutex); |
1da177e4 LT |
1379 | if (!command_info->port_running) { |
1380 | /* Work around HCD bugs */ | |
1381 | usb_clear_halt(serial->dev, command_port->read_urb->pipe); | |
1382 | ||
1383 | command_port->read_urb->dev = serial->dev; | |
1384 | retval = usb_submit_urb(command_port->read_urb, GFP_KERNEL); | |
1385 | if (retval) { | |
80359a9c AC |
1386 | err("%s - failed submitting read urb, error %d", |
1387 | __func__, retval); | |
1da177e4 LT |
1388 | goto exit; |
1389 | } | |
1390 | } | |
1391 | command_info->port_running++; | |
1392 | ||
1393 | exit: | |
08a2b3b6 | 1394 | mutex_unlock(&command_info->mutex); |
1da177e4 LT |
1395 | return retval; |
1396 | } | |
1397 | ||
1398 | ||
1399 | static void stop_command_port(struct usb_serial *serial) | |
1400 | { | |
1401 | struct usb_serial_port *command_port; | |
1402 | struct whiteheat_command_private *command_info; | |
1da177e4 LT |
1403 | |
1404 | command_port = serial->port[COMMAND_PORT]; | |
1405 | command_info = usb_get_serial_port_data(command_port); | |
08a2b3b6 | 1406 | mutex_lock(&command_info->mutex); |
1da177e4 LT |
1407 | command_info->port_running--; |
1408 | if (!command_info->port_running) | |
1409 | usb_kill_urb(command_port->read_urb); | |
08a2b3b6 | 1410 | mutex_unlock(&command_info->mutex); |
1da177e4 LT |
1411 | } |
1412 | ||
1413 | ||
1414 | static int start_port_read(struct usb_serial_port *port) | |
1415 | { | |
1416 | struct whiteheat_private *info = usb_get_serial_port_data(port); | |
1417 | struct whiteheat_urb_wrap *wrap; | |
1418 | struct urb *urb; | |
1419 | int retval = 0; | |
1420 | unsigned long flags; | |
1421 | struct list_head *tmp; | |
1422 | struct list_head *tmp2; | |
1423 | ||
1424 | spin_lock_irqsave(&info->lock, flags); | |
1425 | ||
1426 | list_for_each_safe(tmp, tmp2, &info->rx_urbs_free) { | |
1427 | list_del(tmp); | |
1428 | wrap = list_entry(tmp, struct whiteheat_urb_wrap, list); | |
1429 | urb = wrap->urb; | |
1430 | urb->dev = port->serial->dev; | |
08a2b3b6 | 1431 | spin_unlock_irqrestore(&info->lock, flags); |
1da177e4 LT |
1432 | retval = usb_submit_urb(urb, GFP_KERNEL); |
1433 | if (retval) { | |
08a2b3b6 | 1434 | spin_lock_irqsave(&info->lock, flags); |
1da177e4 LT |
1435 | list_add(tmp, &info->rx_urbs_free); |
1436 | list_for_each_safe(tmp, tmp2, &info->rx_urbs_submitted) { | |
1437 | wrap = list_entry(tmp, struct whiteheat_urb_wrap, list); | |
1438 | urb = wrap->urb; | |
08a2b3b6 ON |
1439 | list_del(tmp); |
1440 | spin_unlock_irqrestore(&info->lock, flags); | |
1da177e4 | 1441 | usb_kill_urb(urb); |
08a2b3b6 ON |
1442 | spin_lock_irqsave(&info->lock, flags); |
1443 | list_add(tmp, &info->rx_urbs_free); | |
1da177e4 LT |
1444 | } |
1445 | break; | |
1446 | } | |
08a2b3b6 | 1447 | spin_lock_irqsave(&info->lock, flags); |
1da177e4 LT |
1448 | list_add(tmp, &info->rx_urbs_submitted); |
1449 | } | |
1450 | ||
1451 | spin_unlock_irqrestore(&info->lock, flags); | |
1452 | ||
1453 | return retval; | |
1454 | } | |
1455 | ||
1456 | ||
80359a9c AC |
1457 | static struct whiteheat_urb_wrap *urb_to_wrap(struct urb *urb, |
1458 | struct list_head *head) | |
1da177e4 LT |
1459 | { |
1460 | struct whiteheat_urb_wrap *wrap; | |
1461 | struct list_head *tmp; | |
1462 | ||
1463 | list_for_each(tmp, head) { | |
1464 | wrap = list_entry(tmp, struct whiteheat_urb_wrap, list); | |
1465 | if (wrap->urb == urb) | |
1466 | return wrap; | |
1467 | } | |
1468 | ||
1469 | return NULL; | |
1470 | } | |
1471 | ||
1472 | ||
1473 | static struct list_head *list_first(struct list_head *head) | |
1474 | { | |
1475 | return head->next; | |
1476 | } | |
1477 | ||
1478 | ||
c4028958 | 1479 | static void rx_data_softint(struct work_struct *work) |
1da177e4 | 1480 | { |
c4028958 DH |
1481 | struct whiteheat_private *info = |
1482 | container_of(work, struct whiteheat_private, rx_work); | |
1483 | struct usb_serial_port *port = info->port; | |
95da310e | 1484 | struct tty_struct *tty = port->port.tty; |
1da177e4 LT |
1485 | struct whiteheat_urb_wrap *wrap; |
1486 | struct urb *urb; | |
1487 | unsigned long flags; | |
1488 | struct list_head *tmp; | |
1489 | struct list_head *tmp2; | |
1490 | int result; | |
1491 | int sent = 0; | |
1492 | ||
1493 | spin_lock_irqsave(&info->lock, flags); | |
1494 | if (info->flags & THROTTLED) { | |
1495 | spin_unlock_irqrestore(&info->lock, flags); | |
1496 | return; | |
1497 | } | |
1498 | ||
1499 | list_for_each_safe(tmp, tmp2, &info->rx_urb_q) { | |
1500 | list_del(tmp); | |
1501 | spin_unlock_irqrestore(&info->lock, flags); | |
1502 | ||
1503 | wrap = list_entry(tmp, struct whiteheat_urb_wrap, list); | |
1504 | urb = wrap->urb; | |
1505 | ||
1506 | if (tty && urb->actual_length) { | |
80359a9c AC |
1507 | int len = tty_buffer_request_room(tty, |
1508 | urb->actual_length); | |
33f0f88f AC |
1509 | /* This stuff can go away now I suspect */ |
1510 | if (unlikely(len < urb->actual_length)) { | |
1da177e4 LT |
1511 | spin_lock_irqsave(&info->lock, flags); |
1512 | list_add(tmp, &info->rx_urb_q); | |
1513 | spin_unlock_irqrestore(&info->lock, flags); | |
1514 | tty_flip_buffer_push(tty); | |
1515 | schedule_work(&info->rx_work); | |
1516 | return; | |
1517 | } | |
33f0f88f AC |
1518 | tty_insert_flip_string(tty, urb->transfer_buffer, len); |
1519 | sent += len; | |
1da177e4 LT |
1520 | } |
1521 | ||
1522 | urb->dev = port->serial->dev; | |
1523 | result = usb_submit_urb(urb, GFP_ATOMIC); | |
1524 | if (result) { | |
80359a9c AC |
1525 | err("%s - failed resubmitting read urb, error %d", |
1526 | __func__, result); | |
1da177e4 LT |
1527 | spin_lock_irqsave(&info->lock, flags); |
1528 | list_add(tmp, &info->rx_urbs_free); | |
1529 | continue; | |
1530 | } | |
1531 | ||
1532 | spin_lock_irqsave(&info->lock, flags); | |
1533 | list_add(tmp, &info->rx_urbs_submitted); | |
1534 | } | |
1535 | spin_unlock_irqrestore(&info->lock, flags); | |
1536 | ||
1537 | if (sent) | |
1538 | tty_flip_buffer_push(tty); | |
1539 | } | |
1540 | ||
1541 | ||
1542 | /***************************************************************************** | |
1543 | * Connect Tech's White Heat module functions | |
1544 | *****************************************************************************/ | |
80359a9c | 1545 | static int __init whiteheat_init(void) |
1da177e4 LT |
1546 | { |
1547 | int retval; | |
1548 | retval = usb_serial_register(&whiteheat_fake_device); | |
1549 | if (retval) | |
1550 | goto failed_fake_register; | |
1551 | retval = usb_serial_register(&whiteheat_device); | |
1552 | if (retval) | |
1553 | goto failed_device_register; | |
1554 | retval = usb_register(&whiteheat_driver); | |
1555 | if (retval) | |
1556 | goto failed_usb_register; | |
1557 | info(DRIVER_DESC " " DRIVER_VERSION); | |
1558 | return 0; | |
1559 | failed_usb_register: | |
1560 | usb_serial_deregister(&whiteheat_device); | |
1561 | failed_device_register: | |
1562 | usb_serial_deregister(&whiteheat_fake_device); | |
1563 | failed_fake_register: | |
1564 | return retval; | |
1565 | } | |
1566 | ||
1567 | ||
80359a9c | 1568 | static void __exit whiteheat_exit(void) |
1da177e4 | 1569 | { |
80359a9c AC |
1570 | usb_deregister(&whiteheat_driver); |
1571 | usb_serial_deregister(&whiteheat_fake_device); | |
1572 | usb_serial_deregister(&whiteheat_device); | |
1da177e4 LT |
1573 | } |
1574 | ||
1575 | ||
1576 | module_init(whiteheat_init); | |
1577 | module_exit(whiteheat_exit); | |
1578 | ||
80359a9c AC |
1579 | MODULE_AUTHOR(DRIVER_AUTHOR); |
1580 | MODULE_DESCRIPTION(DRIVER_DESC); | |
1da177e4 LT |
1581 | MODULE_LICENSE("GPL"); |
1582 | ||
ec6752f5 DW |
1583 | MODULE_FIRMWARE("whiteheat.fw"); |
1584 | MODULE_FIRMWARE("whiteheat_loader.fw"); | |
1585 | ||
1da177e4 LT |
1586 | module_param(urb_pool_size, int, 0); |
1587 | MODULE_PARM_DESC(urb_pool_size, "Number of urbs to use for buffering"); | |
1588 | ||
1589 | module_param(debug, bool, S_IRUGO | S_IWUSR); | |
1590 | MODULE_PARM_DESC(debug, "Debug enabled or not"); |