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 | ||
1da177e4 LT |
19 | #include <linux/kernel.h> |
20 | #include <linux/errno.h> | |
21 | #include <linux/init.h> | |
22 | #include <linux/slab.h> | |
23 | #include <linux/tty.h> | |
24 | #include <linux/tty_driver.h> | |
25 | #include <linux/tty_flip.h> | |
26 | #include <linux/module.h> | |
27 | #include <linux/spinlock.h> | |
08a2b3b6 | 28 | #include <linux/mutex.h> |
80359a9c | 29 | #include <linux/uaccess.h> |
1da177e4 LT |
30 | #include <asm/termbits.h> |
31 | #include <linux/usb.h> | |
32 | #include <linux/serial_reg.h> | |
33 | #include <linux/serial.h> | |
a969888c | 34 | #include <linux/usb/serial.h> |
ec6752f5 DW |
35 | #include <linux/firmware.h> |
36 | #include <linux/ihex.h> | |
1da177e4 LT |
37 | #include "whiteheat.h" /* WhiteHEAT specific commands */ |
38 | ||
90ab5ee9 | 39 | static bool debug; |
1da177e4 LT |
40 | |
41 | #ifndef CMSPAR | |
42 | #define CMSPAR 0 | |
43 | #endif | |
44 | ||
45 | /* | |
46 | * Version Information | |
47 | */ | |
48 | #define DRIVER_VERSION "v2.0" | |
49 | #define DRIVER_AUTHOR "Greg Kroah-Hartman <greg@kroah.com>, Stuart MacDonald <stuartm@connecttech.com>" | |
50 | #define DRIVER_DESC "USB ConnectTech WhiteHEAT driver" | |
51 | ||
52 | #define CONNECT_TECH_VENDOR_ID 0x0710 | |
53 | #define CONNECT_TECH_FAKE_WHITE_HEAT_ID 0x0001 | |
54 | #define CONNECT_TECH_WHITE_HEAT_ID 0x8001 | |
55 | ||
56 | /* | |
57 | ID tables for whiteheat are unusual, because we want to different | |
58 | things for different versions of the device. Eventually, this | |
59 | will be doable from a single table. But, for now, we define two | |
60 | separate ID tables, and then a third table that combines them | |
61 | just for the purpose of exporting the autoloading information. | |
62 | */ | |
7d40d7e8 | 63 | static const struct usb_device_id id_table_std[] = { |
1da177e4 LT |
64 | { USB_DEVICE(CONNECT_TECH_VENDOR_ID, CONNECT_TECH_WHITE_HEAT_ID) }, |
65 | { } /* Terminating entry */ | |
66 | }; | |
67 | ||
7d40d7e8 | 68 | static const struct usb_device_id id_table_prerenumeration[] = { |
1da177e4 LT |
69 | { USB_DEVICE(CONNECT_TECH_VENDOR_ID, CONNECT_TECH_FAKE_WHITE_HEAT_ID) }, |
70 | { } /* Terminating entry */ | |
71 | }; | |
72 | ||
7d40d7e8 | 73 | static const struct usb_device_id id_table_combined[] = { |
1da177e4 LT |
74 | { USB_DEVICE(CONNECT_TECH_VENDOR_ID, CONNECT_TECH_WHITE_HEAT_ID) }, |
75 | { USB_DEVICE(CONNECT_TECH_VENDOR_ID, CONNECT_TECH_FAKE_WHITE_HEAT_ID) }, | |
76 | { } /* Terminating entry */ | |
77 | }; | |
78 | ||
80359a9c | 79 | MODULE_DEVICE_TABLE(usb, id_table_combined); |
1da177e4 LT |
80 | |
81 | static struct usb_driver whiteheat_driver = { | |
1da177e4 LT |
82 | .name = "whiteheat", |
83 | .probe = usb_serial_probe, | |
84 | .disconnect = usb_serial_disconnect, | |
85 | .id_table = id_table_combined, | |
ba9dc657 | 86 | .no_dynamic_id = 1, |
1da177e4 LT |
87 | }; |
88 | ||
89 | /* function prototypes for the Connect Tech WhiteHEAT prerenumeration device */ | |
80359a9c AC |
90 | static int whiteheat_firmware_download(struct usb_serial *serial, |
91 | const struct usb_device_id *id); | |
92 | static int whiteheat_firmware_attach(struct usb_serial *serial); | |
1da177e4 LT |
93 | |
94 | /* function prototypes for the Connect Tech WhiteHEAT serial converter */ | |
80359a9c | 95 | static int whiteheat_attach(struct usb_serial *serial); |
f9c99bb8 | 96 | static void whiteheat_release(struct usb_serial *serial); |
80359a9c | 97 | static int whiteheat_open(struct tty_struct *tty, |
a509a7e4 | 98 | struct usb_serial_port *port); |
335f8514 | 99 | static void whiteheat_close(struct usb_serial_port *port); |
80359a9c AC |
100 | static int whiteheat_write(struct tty_struct *tty, |
101 | struct usb_serial_port *port, | |
102 | const unsigned char *buf, int count); | |
103 | static int whiteheat_write_room(struct tty_struct *tty); | |
00a0d0d6 | 104 | static int whiteheat_ioctl(struct tty_struct *tty, |
80359a9c AC |
105 | unsigned int cmd, unsigned long arg); |
106 | static void whiteheat_set_termios(struct tty_struct *tty, | |
107 | struct usb_serial_port *port, struct ktermios *old); | |
60b33c13 | 108 | static int whiteheat_tiocmget(struct tty_struct *tty); |
20b9d177 | 109 | static int whiteheat_tiocmset(struct tty_struct *tty, |
80359a9c AC |
110 | unsigned int set, unsigned int clear); |
111 | static void whiteheat_break_ctl(struct tty_struct *tty, int break_state); | |
112 | static int whiteheat_chars_in_buffer(struct tty_struct *tty); | |
113 | static void whiteheat_throttle(struct tty_struct *tty); | |
114 | static void whiteheat_unthrottle(struct tty_struct *tty); | |
115 | static void whiteheat_read_callback(struct urb *urb); | |
116 | static void whiteheat_write_callback(struct urb *urb); | |
1da177e4 | 117 | |
ea65370d | 118 | static struct usb_serial_driver whiteheat_fake_device = { |
18fcac35 GKH |
119 | .driver = { |
120 | .owner = THIS_MODULE, | |
269bda1c | 121 | .name = "whiteheatnofirm", |
18fcac35 | 122 | }, |
269bda1c | 123 | .description = "Connect Tech - WhiteHEAT - (prerenumeration)", |
d9b1b787 | 124 | .usb_driver = &whiteheat_driver, |
1da177e4 | 125 | .id_table = id_table_prerenumeration, |
1da177e4 LT |
126 | .num_ports = 1, |
127 | .probe = whiteheat_firmware_download, | |
128 | .attach = whiteheat_firmware_attach, | |
129 | }; | |
130 | ||
ea65370d | 131 | static struct usb_serial_driver whiteheat_device = { |
18fcac35 GKH |
132 | .driver = { |
133 | .owner = THIS_MODULE, | |
269bda1c | 134 | .name = "whiteheat", |
18fcac35 | 135 | }, |
269bda1c | 136 | .description = "Connect Tech - WhiteHEAT", |
d9b1b787 | 137 | .usb_driver = &whiteheat_driver, |
1da177e4 | 138 | .id_table = id_table_std, |
1da177e4 LT |
139 | .num_ports = 4, |
140 | .attach = whiteheat_attach, | |
f9c99bb8 | 141 | .release = whiteheat_release, |
1da177e4 LT |
142 | .open = whiteheat_open, |
143 | .close = whiteheat_close, | |
144 | .write = whiteheat_write, | |
145 | .write_room = whiteheat_write_room, | |
146 | .ioctl = whiteheat_ioctl, | |
147 | .set_termios = whiteheat_set_termios, | |
148 | .break_ctl = whiteheat_break_ctl, | |
149 | .tiocmget = whiteheat_tiocmget, | |
150 | .tiocmset = whiteheat_tiocmset, | |
151 | .chars_in_buffer = whiteheat_chars_in_buffer, | |
152 | .throttle = whiteheat_throttle, | |
153 | .unthrottle = whiteheat_unthrottle, | |
154 | .read_bulk_callback = whiteheat_read_callback, | |
155 | .write_bulk_callback = whiteheat_write_callback, | |
156 | }; | |
157 | ||
158 | ||
159 | struct whiteheat_command_private { | |
08a2b3b6 | 160 | struct mutex mutex; |
1da177e4 LT |
161 | __u8 port_running; |
162 | __u8 command_finished; | |
80359a9c AC |
163 | wait_queue_head_t wait_command; /* for handling sleeping whilst |
164 | waiting for a command to | |
165 | finish */ | |
1da177e4 LT |
166 | __u8 result_buffer[64]; |
167 | }; | |
168 | ||
169 | ||
170 | #define THROTTLED 0x01 | |
171 | #define ACTUALLY_THROTTLED 0x02 | |
172 | ||
173 | static int urb_pool_size = 8; | |
174 | ||
175 | struct whiteheat_urb_wrap { | |
176 | struct list_head list; | |
177 | struct urb *urb; | |
178 | }; | |
179 | ||
180 | struct whiteheat_private { | |
181 | spinlock_t lock; | |
182 | __u8 flags; | |
a5b6f60c | 183 | __u8 mcr; /* FIXME: no locking on mcr */ |
1da177e4 LT |
184 | struct list_head rx_urbs_free; |
185 | struct list_head rx_urbs_submitted; | |
186 | struct list_head rx_urb_q; | |
187 | struct work_struct rx_work; | |
c4028958 | 188 | struct usb_serial_port *port; |
1da177e4 LT |
189 | struct list_head tx_urbs_free; |
190 | struct list_head tx_urbs_submitted; | |
08a2b3b6 | 191 | struct mutex deathwarrant; |
1da177e4 LT |
192 | }; |
193 | ||
194 | ||
195 | /* local function prototypes */ | |
196 | static int start_command_port(struct usb_serial *serial); | |
197 | static void stop_command_port(struct usb_serial *serial); | |
7d12e780 DH |
198 | static void command_port_write_callback(struct urb *urb); |
199 | static void command_port_read_callback(struct urb *urb); | |
1da177e4 LT |
200 | |
201 | static int start_port_read(struct usb_serial_port *port); | |
80359a9c AC |
202 | static struct whiteheat_urb_wrap *urb_to_wrap(struct urb *urb, |
203 | struct list_head *head); | |
1da177e4 | 204 | static struct list_head *list_first(struct list_head *head); |
c4028958 | 205 | static void rx_data_softint(struct work_struct *work); |
1da177e4 | 206 | |
80359a9c AC |
207 | static int firm_send_command(struct usb_serial_port *port, __u8 command, |
208 | __u8 *data, __u8 datasize); | |
1da177e4 LT |
209 | static int firm_open(struct usb_serial_port *port); |
210 | static int firm_close(struct usb_serial_port *port); | |
fe1ae7fd | 211 | static void firm_setup_port(struct tty_struct *tty); |
1da177e4 LT |
212 | static int firm_set_rts(struct usb_serial_port *port, __u8 onoff); |
213 | static int firm_set_dtr(struct usb_serial_port *port, __u8 onoff); | |
214 | static int firm_set_break(struct usb_serial_port *port, __u8 onoff); | |
215 | static int firm_purge(struct usb_serial_port *port, __u8 rxtx); | |
216 | static int firm_get_dtr_rts(struct usb_serial_port *port); | |
217 | static int firm_report_tx_done(struct usb_serial_port *port); | |
218 | ||
219 | ||
220 | #define COMMAND_PORT 4 | |
221 | #define COMMAND_TIMEOUT (2*HZ) /* 2 second timeout for a command */ | |
222 | #define COMMAND_TIMEOUT_MS 2000 | |
223 | #define CLOSING_DELAY (30 * HZ) | |
224 | ||
225 | ||
226 | /***************************************************************************** | |
227 | * Connect Tech's White Heat prerenumeration driver functions | |
228 | *****************************************************************************/ | |
229 | ||
230 | /* steps to download the firmware to the WhiteHEAT device: | |
231 | - hold the reset (by writing to the reset bit of the CPUCS register) | |
232 | - download the VEND_AX.HEX file to the chip using VENDOR_REQUEST-ANCHOR_LOAD | |
233 | - release the reset (by writing to the CPUCS register) | |
234 | - download the WH.HEX file for all addresses greater than 0x1b3f using | |
235 | VENDOR_REQUEST-ANCHOR_EXTERNAL_RAM_LOAD | |
236 | - hold the reset | |
237 | - download the WH.HEX file for all addresses less than 0x1b40 using | |
238 | VENDOR_REQUEST_ANCHOR_LOAD | |
239 | - release the reset | |
240 | - device renumerated itself and comes up as new device id with all | |
241 | firmware download completed. | |
242 | */ | |
80359a9c AC |
243 | static int whiteheat_firmware_download(struct usb_serial *serial, |
244 | const struct usb_device_id *id) | |
1da177e4 | 245 | { |
ec6752f5 DW |
246 | int response, ret = -ENOENT; |
247 | const struct firmware *loader_fw = NULL, *firmware_fw = NULL; | |
248 | const struct ihex_binrec *record; | |
249 | ||
441b62c1 | 250 | dbg("%s", __func__); |
ec6752f5 DW |
251 | |
252 | if (request_ihex_firmware(&firmware_fw, "whiteheat.fw", | |
253 | &serial->dev->dev)) { | |
194343d9 GKH |
254 | dev_err(&serial->dev->dev, |
255 | "%s - request \"whiteheat.fw\" failed\n", __func__); | |
ec6752f5 DW |
256 | goto out; |
257 | } | |
258 | if (request_ihex_firmware(&loader_fw, "whiteheat_loader.fw", | |
259 | &serial->dev->dev)) { | |
194343d9 GKH |
260 | dev_err(&serial->dev->dev, |
261 | "%s - request \"whiteheat_loader.fw\" failed\n", | |
262 | __func__); | |
ec6752f5 DW |
263 | goto out; |
264 | } | |
265 | ret = 0; | |
1da177e4 LT |
266 | response = ezusb_set_reset (serial, 1); |
267 | ||
ec6752f5 DW |
268 | record = (const struct ihex_binrec *)loader_fw->data; |
269 | while (record) { | |
270 | response = ezusb_writememory (serial, be32_to_cpu(record->addr), | |
271 | (unsigned char *)record->data, | |
272 | be16_to_cpu(record->len), 0xa0); | |
1da177e4 | 273 | if (response < 0) { |
194343d9 GKH |
274 | dev_err(&serial->dev->dev, "%s - ezusb_writememory " |
275 | "failed for loader (%d %04X %p %d)\n", | |
276 | __func__, response, be32_to_cpu(record->addr), | |
277 | record->data, be16_to_cpu(record->len)); | |
1da177e4 LT |
278 | break; |
279 | } | |
ec6752f5 | 280 | record = ihex_next_binrec(record); |
1da177e4 LT |
281 | } |
282 | ||
80359a9c | 283 | response = ezusb_set_reset(serial, 0); |
1da177e4 | 284 | |
ec6752f5 DW |
285 | record = (const struct ihex_binrec *)firmware_fw->data; |
286 | while (record && be32_to_cpu(record->addr) < 0x1b40) | |
287 | record = ihex_next_binrec(record); | |
288 | while (record) { | |
289 | response = ezusb_writememory (serial, be32_to_cpu(record->addr), | |
290 | (unsigned char *)record->data, | |
291 | be16_to_cpu(record->len), 0xa3); | |
1da177e4 | 292 | if (response < 0) { |
194343d9 GKH |
293 | dev_err(&serial->dev->dev, "%s - ezusb_writememory " |
294 | "failed for first firmware step " | |
295 | "(%d %04X %p %d)\n", __func__, response, | |
296 | be32_to_cpu(record->addr), record->data, | |
297 | be16_to_cpu(record->len)); | |
1da177e4 LT |
298 | break; |
299 | } | |
300 | ++record; | |
301 | } | |
80359a9c AC |
302 | |
303 | response = ezusb_set_reset(serial, 1); | |
1da177e4 | 304 | |
ec6752f5 DW |
305 | record = (const struct ihex_binrec *)firmware_fw->data; |
306 | while (record && be32_to_cpu(record->addr) < 0x1b40) { | |
307 | response = ezusb_writememory (serial, be32_to_cpu(record->addr), | |
308 | (unsigned char *)record->data, | |
309 | be16_to_cpu(record->len), 0xa0); | |
1da177e4 | 310 | if (response < 0) { |
194343d9 GKH |
311 | dev_err(&serial->dev->dev, "%s - ezusb_writememory " |
312 | "failed for second firmware step " | |
313 | "(%d %04X %p %d)\n", __func__, response, | |
314 | be32_to_cpu(record->addr), record->data, | |
315 | be16_to_cpu(record->len)); | |
1da177e4 LT |
316 | break; |
317 | } | |
318 | ++record; | |
319 | } | |
ec6752f5 | 320 | ret = 0; |
1da177e4 | 321 | response = ezusb_set_reset (serial, 0); |
ec6752f5 DW |
322 | out: |
323 | release_firmware(loader_fw); | |
324 | release_firmware(firmware_fw); | |
325 | return ret; | |
1da177e4 LT |
326 | } |
327 | ||
328 | ||
80359a9c | 329 | static int whiteheat_firmware_attach(struct usb_serial *serial) |
1da177e4 LT |
330 | { |
331 | /* We want this device to fail to have a driver assigned to it */ | |
332 | return 1; | |
333 | } | |
334 | ||
335 | ||
336 | /***************************************************************************** | |
337 | * Connect Tech's White Heat serial driver functions | |
338 | *****************************************************************************/ | |
80359a9c | 339 | static int whiteheat_attach(struct usb_serial *serial) |
1da177e4 LT |
340 | { |
341 | struct usb_serial_port *command_port; | |
342 | struct whiteheat_command_private *command_info; | |
343 | struct usb_serial_port *port; | |
344 | struct whiteheat_private *info; | |
345 | struct whiteheat_hw_info *hw_info; | |
346 | int pipe; | |
347 | int ret; | |
348 | int alen; | |
349 | __u8 *command; | |
350 | __u8 *result; | |
351 | int i; | |
352 | int j; | |
353 | struct urb *urb; | |
354 | int buf_size; | |
355 | struct whiteheat_urb_wrap *wrap; | |
356 | struct list_head *tmp; | |
357 | ||
358 | command_port = serial->port[COMMAND_PORT]; | |
359 | ||
80359a9c AC |
360 | pipe = usb_sndbulkpipe(serial->dev, |
361 | command_port->bulk_out_endpointAddress); | |
1da177e4 LT |
362 | command = kmalloc(2, GFP_KERNEL); |
363 | if (!command) | |
364 | goto no_command_buffer; | |
365 | command[0] = WHITEHEAT_GET_HW_INFO; | |
366 | command[1] = 0; | |
80359a9c | 367 | |
1da177e4 LT |
368 | result = kmalloc(sizeof(*hw_info) + 1, GFP_KERNEL); |
369 | if (!result) | |
370 | goto no_result_buffer; | |
371 | /* | |
372 | * When the module is reloaded the firmware is still there and | |
373 | * the endpoints are still in the usb core unchanged. This is the | |
80359a9c AC |
374 | * unlinking bug in disguise. Same for the call below. |
375 | */ | |
1da177e4 | 376 | usb_clear_halt(serial->dev, pipe); |
80359a9c AC |
377 | ret = usb_bulk_msg(serial->dev, pipe, command, 2, |
378 | &alen, COMMAND_TIMEOUT_MS); | |
1da177e4 | 379 | if (ret) { |
194343d9 GKH |
380 | dev_err(&serial->dev->dev, "%s: Couldn't send command [%d]\n", |
381 | serial->type->description, ret); | |
1da177e4 | 382 | goto no_firmware; |
09fd6bc8 | 383 | } else if (alen != 2) { |
194343d9 GKH |
384 | dev_err(&serial->dev->dev, "%s: Send command incomplete [%d]\n", |
385 | serial->type->description, alen); | |
1da177e4 LT |
386 | goto no_firmware; |
387 | } | |
388 | ||
80359a9c AC |
389 | pipe = usb_rcvbulkpipe(serial->dev, |
390 | command_port->bulk_in_endpointAddress); | |
1da177e4 LT |
391 | /* See the comment on the usb_clear_halt() above */ |
392 | usb_clear_halt(serial->dev, pipe); | |
80359a9c AC |
393 | ret = usb_bulk_msg(serial->dev, pipe, result, |
394 | sizeof(*hw_info) + 1, &alen, COMMAND_TIMEOUT_MS); | |
1da177e4 | 395 | if (ret) { |
194343d9 GKH |
396 | dev_err(&serial->dev->dev, "%s: Couldn't get results [%d]\n", |
397 | serial->type->description, ret); | |
1da177e4 | 398 | goto no_firmware; |
09fd6bc8 | 399 | } else if (alen != sizeof(*hw_info) + 1) { |
194343d9 GKH |
400 | dev_err(&serial->dev->dev, "%s: Get results incomplete [%d]\n", |
401 | serial->type->description, alen); | |
1da177e4 LT |
402 | goto no_firmware; |
403 | } else if (result[0] != command[0]) { | |
194343d9 GKH |
404 | dev_err(&serial->dev->dev, "%s: Command failed [%d]\n", |
405 | serial->type->description, result[0]); | |
1da177e4 LT |
406 | goto no_firmware; |
407 | } | |
408 | ||
409 | hw_info = (struct whiteheat_hw_info *)&result[1]; | |
410 | ||
c197a8db GKH |
411 | dev_info(&serial->dev->dev, "%s: Driver %s: Firmware v%d.%02d\n", |
412 | serial->type->description, DRIVER_VERSION, | |
413 | hw_info->sw_major_rev, hw_info->sw_minor_rev); | |
1da177e4 LT |
414 | |
415 | for (i = 0; i < serial->num_ports; i++) { | |
416 | port = serial->port[i]; | |
417 | ||
5cbded58 | 418 | info = kmalloc(sizeof(struct whiteheat_private), GFP_KERNEL); |
1da177e4 | 419 | if (info == NULL) { |
194343d9 GKH |
420 | dev_err(&port->dev, |
421 | "%s: Out of memory for port structures\n", | |
422 | serial->type->description); | |
1da177e4 LT |
423 | goto no_private; |
424 | } | |
425 | ||
426 | spin_lock_init(&info->lock); | |
08a2b3b6 | 427 | mutex_init(&info->deathwarrant); |
1da177e4 LT |
428 | info->flags = 0; |
429 | info->mcr = 0; | |
c4028958 DH |
430 | INIT_WORK(&info->rx_work, rx_data_softint); |
431 | info->port = port; | |
1da177e4 LT |
432 | |
433 | INIT_LIST_HEAD(&info->rx_urbs_free); | |
434 | INIT_LIST_HEAD(&info->rx_urbs_submitted); | |
435 | INIT_LIST_HEAD(&info->rx_urb_q); | |
436 | INIT_LIST_HEAD(&info->tx_urbs_free); | |
437 | INIT_LIST_HEAD(&info->tx_urbs_submitted); | |
438 | ||
439 | for (j = 0; j < urb_pool_size; j++) { | |
440 | urb = usb_alloc_urb(0, GFP_KERNEL); | |
441 | if (!urb) { | |
194343d9 | 442 | dev_err(&port->dev, "No free urbs available\n"); |
1da177e4 LT |
443 | goto no_rx_urb; |
444 | } | |
445 | buf_size = port->read_urb->transfer_buffer_length; | |
446 | urb->transfer_buffer = kmalloc(buf_size, GFP_KERNEL); | |
447 | if (!urb->transfer_buffer) { | |
194343d9 GKH |
448 | dev_err(&port->dev, |
449 | "Couldn't allocate urb buffer\n"); | |
1da177e4 LT |
450 | goto no_rx_buf; |
451 | } | |
452 | wrap = kmalloc(sizeof(*wrap), GFP_KERNEL); | |
453 | if (!wrap) { | |
194343d9 GKH |
454 | dev_err(&port->dev, |
455 | "Couldn't allocate urb wrapper\n"); | |
1da177e4 LT |
456 | goto no_rx_wrap; |
457 | } | |
458 | usb_fill_bulk_urb(urb, serial->dev, | |
459 | usb_rcvbulkpipe(serial->dev, | |
460 | port->bulk_in_endpointAddress), | |
461 | urb->transfer_buffer, buf_size, | |
462 | whiteheat_read_callback, port); | |
463 | wrap->urb = urb; | |
464 | list_add(&wrap->list, &info->rx_urbs_free); | |
465 | ||
466 | urb = usb_alloc_urb(0, GFP_KERNEL); | |
467 | if (!urb) { | |
194343d9 | 468 | dev_err(&port->dev, "No free urbs available\n"); |
1da177e4 LT |
469 | goto no_tx_urb; |
470 | } | |
471 | buf_size = port->write_urb->transfer_buffer_length; | |
472 | urb->transfer_buffer = kmalloc(buf_size, GFP_KERNEL); | |
473 | if (!urb->transfer_buffer) { | |
194343d9 GKH |
474 | dev_err(&port->dev, |
475 | "Couldn't allocate urb buffer\n"); | |
1da177e4 LT |
476 | goto no_tx_buf; |
477 | } | |
478 | wrap = kmalloc(sizeof(*wrap), GFP_KERNEL); | |
479 | if (!wrap) { | |
194343d9 GKH |
480 | dev_err(&port->dev, |
481 | "Couldn't allocate urb wrapper\n"); | |
1da177e4 LT |
482 | goto no_tx_wrap; |
483 | } | |
484 | usb_fill_bulk_urb(urb, serial->dev, | |
485 | usb_sndbulkpipe(serial->dev, | |
486 | port->bulk_out_endpointAddress), | |
487 | urb->transfer_buffer, buf_size, | |
488 | whiteheat_write_callback, port); | |
489 | wrap->urb = urb; | |
490 | list_add(&wrap->list, &info->tx_urbs_free); | |
491 | } | |
492 | ||
493 | usb_set_serial_port_data(port, info); | |
494 | } | |
495 | ||
80359a9c AC |
496 | command_info = kmalloc(sizeof(struct whiteheat_command_private), |
497 | GFP_KERNEL); | |
1da177e4 | 498 | if (command_info == NULL) { |
194343d9 GKH |
499 | dev_err(&serial->dev->dev, |
500 | "%s: Out of memory for port structures\n", | |
501 | serial->type->description); | |
1da177e4 LT |
502 | goto no_command_private; |
503 | } | |
504 | ||
08a2b3b6 | 505 | mutex_init(&command_info->mutex); |
1da177e4 LT |
506 | command_info->port_running = 0; |
507 | init_waitqueue_head(&command_info->wait_command); | |
508 | usb_set_serial_port_data(command_port, command_info); | |
509 | command_port->write_urb->complete = command_port_write_callback; | |
510 | command_port->read_urb->complete = command_port_read_callback; | |
511 | kfree(result); | |
512 | kfree(command); | |
513 | ||
514 | return 0; | |
515 | ||
516 | no_firmware: | |
517 | /* Firmware likely not running */ | |
194343d9 GKH |
518 | dev_err(&serial->dev->dev, |
519 | "%s: Unable to retrieve firmware version, try replugging\n", | |
520 | serial->type->description); | |
521 | dev_err(&serial->dev->dev, | |
522 | "%s: If the firmware is not running (status led not blinking)\n", | |
523 | serial->type->description); | |
524 | dev_err(&serial->dev->dev, | |
525 | "%s: please contact support@connecttech.com\n", | |
526 | serial->type->description); | |
67ca0284 | 527 | kfree(result); |
1da177e4 LT |
528 | return -ENODEV; |
529 | ||
530 | no_command_private: | |
531 | for (i = serial->num_ports - 1; i >= 0; i--) { | |
532 | port = serial->port[i]; | |
533 | info = usb_get_serial_port_data(port); | |
534 | for (j = urb_pool_size - 1; j >= 0; j--) { | |
535 | tmp = list_first(&info->tx_urbs_free); | |
536 | list_del(tmp); | |
537 | wrap = list_entry(tmp, struct whiteheat_urb_wrap, list); | |
538 | urb = wrap->urb; | |
539 | kfree(wrap); | |
540 | no_tx_wrap: | |
541 | kfree(urb->transfer_buffer); | |
542 | no_tx_buf: | |
543 | usb_free_urb(urb); | |
544 | no_tx_urb: | |
545 | tmp = list_first(&info->rx_urbs_free); | |
546 | list_del(tmp); | |
547 | wrap = list_entry(tmp, struct whiteheat_urb_wrap, list); | |
548 | urb = wrap->urb; | |
549 | kfree(wrap); | |
550 | no_rx_wrap: | |
551 | kfree(urb->transfer_buffer); | |
552 | no_rx_buf: | |
553 | usb_free_urb(urb); | |
554 | no_rx_urb: | |
555 | ; | |
556 | } | |
557 | kfree(info); | |
558 | no_private: | |
559 | ; | |
560 | } | |
561 | kfree(result); | |
562 | no_result_buffer: | |
563 | kfree(command); | |
564 | no_command_buffer: | |
565 | return -ENOMEM; | |
566 | } | |
567 | ||
568 | ||
f9c99bb8 | 569 | static void whiteheat_release(struct usb_serial *serial) |
1da177e4 LT |
570 | { |
571 | struct usb_serial_port *command_port; | |
572 | struct usb_serial_port *port; | |
573 | struct whiteheat_private *info; | |
574 | struct whiteheat_urb_wrap *wrap; | |
575 | struct urb *urb; | |
576 | struct list_head *tmp; | |
577 | struct list_head *tmp2; | |
578 | int i; | |
579 | ||
441b62c1 | 580 | dbg("%s", __func__); |
1da177e4 LT |
581 | |
582 | /* free up our private data for our command port */ | |
583 | command_port = serial->port[COMMAND_PORT]; | |
80359a9c | 584 | kfree(usb_get_serial_port_data(command_port)); |
1da177e4 LT |
585 | |
586 | for (i = 0; i < serial->num_ports; i++) { | |
587 | port = serial->port[i]; | |
588 | info = usb_get_serial_port_data(port); | |
589 | list_for_each_safe(tmp, tmp2, &info->rx_urbs_free) { | |
590 | list_del(tmp); | |
591 | wrap = list_entry(tmp, struct whiteheat_urb_wrap, list); | |
592 | urb = wrap->urb; | |
593 | kfree(wrap); | |
594 | kfree(urb->transfer_buffer); | |
595 | usb_free_urb(urb); | |
596 | } | |
597 | list_for_each_safe(tmp, tmp2, &info->tx_urbs_free) { | |
598 | list_del(tmp); | |
599 | wrap = list_entry(tmp, struct whiteheat_urb_wrap, list); | |
600 | urb = wrap->urb; | |
601 | kfree(wrap); | |
602 | kfree(urb->transfer_buffer); | |
603 | usb_free_urb(urb); | |
604 | } | |
605 | kfree(info); | |
606 | } | |
1da177e4 LT |
607 | } |
608 | ||
a509a7e4 | 609 | static int whiteheat_open(struct tty_struct *tty, struct usb_serial_port *port) |
1da177e4 LT |
610 | { |
611 | int retval = 0; | |
1da177e4 | 612 | |
441b62c1 | 613 | dbg("%s - port %d", __func__, port->number); |
1da177e4 LT |
614 | |
615 | retval = start_command_port(port->serial); | |
616 | if (retval) | |
617 | goto exit; | |
618 | ||
95da310e AC |
619 | if (tty) |
620 | tty->low_latency = 1; | |
1da177e4 LT |
621 | |
622 | /* send an open port command */ | |
623 | retval = firm_open(port); | |
624 | if (retval) { | |
625 | stop_command_port(port->serial); | |
626 | goto exit; | |
627 | } | |
628 | ||
629 | retval = firm_purge(port, WHITEHEAT_PURGE_RX | WHITEHEAT_PURGE_TX); | |
630 | if (retval) { | |
631 | firm_close(port); | |
632 | stop_command_port(port->serial); | |
633 | goto exit; | |
634 | } | |
635 | ||
72e27412 AC |
636 | if (tty) |
637 | firm_setup_port(tty); | |
1da177e4 LT |
638 | |
639 | /* Work around HCD bugs */ | |
640 | usb_clear_halt(port->serial->dev, port->read_urb->pipe); | |
641 | usb_clear_halt(port->serial->dev, port->write_urb->pipe); | |
642 | ||
643 | /* Start reading from the device */ | |
644 | retval = start_port_read(port); | |
645 | if (retval) { | |
194343d9 GKH |
646 | dev_err(&port->dev, |
647 | "%s - failed submitting read urb, error %d\n", | |
648 | __func__, retval); | |
1da177e4 LT |
649 | firm_close(port); |
650 | stop_command_port(port->serial); | |
651 | goto exit; | |
652 | } | |
653 | ||
654 | exit: | |
441b62c1 | 655 | dbg("%s - exit, retval = %d", __func__, retval); |
1da177e4 LT |
656 | return retval; |
657 | } | |
658 | ||
659 | ||
335f8514 | 660 | static void whiteheat_close(struct usb_serial_port *port) |
1da177e4 LT |
661 | { |
662 | struct whiteheat_private *info = usb_get_serial_port_data(port); | |
663 | struct whiteheat_urb_wrap *wrap; | |
664 | struct urb *urb; | |
665 | struct list_head *tmp; | |
666 | struct list_head *tmp2; | |
1da177e4 | 667 | |
441b62c1 | 668 | dbg("%s - port %d", __func__, port->number); |
e33fe4d8 | 669 | |
1da177e4 | 670 | firm_report_tx_done(port); |
1da177e4 LT |
671 | firm_close(port); |
672 | ||
673 | /* shutdown our bulk reads and writes */ | |
08a2b3b6 ON |
674 | mutex_lock(&info->deathwarrant); |
675 | spin_lock_irq(&info->lock); | |
1da177e4 LT |
676 | list_for_each_safe(tmp, tmp2, &info->rx_urbs_submitted) { |
677 | wrap = list_entry(tmp, struct whiteheat_urb_wrap, list); | |
678 | urb = wrap->urb; | |
08a2b3b6 ON |
679 | list_del(tmp); |
680 | spin_unlock_irq(&info->lock); | |
1da177e4 | 681 | usb_kill_urb(urb); |
08a2b3b6 ON |
682 | spin_lock_irq(&info->lock); |
683 | list_add(tmp, &info->rx_urbs_free); | |
1da177e4 | 684 | } |
179e0917 AM |
685 | list_for_each_safe(tmp, tmp2, &info->rx_urb_q) |
686 | list_move(tmp, &info->rx_urbs_free); | |
1da177e4 LT |
687 | list_for_each_safe(tmp, tmp2, &info->tx_urbs_submitted) { |
688 | wrap = list_entry(tmp, struct whiteheat_urb_wrap, list); | |
689 | urb = wrap->urb; | |
08a2b3b6 ON |
690 | list_del(tmp); |
691 | spin_unlock_irq(&info->lock); | |
1da177e4 | 692 | usb_kill_urb(urb); |
08a2b3b6 ON |
693 | spin_lock_irq(&info->lock); |
694 | list_add(tmp, &info->tx_urbs_free); | |
1da177e4 | 695 | } |
08a2b3b6 ON |
696 | spin_unlock_irq(&info->lock); |
697 | mutex_unlock(&info->deathwarrant); | |
1da177e4 | 698 | stop_command_port(port->serial); |
1da177e4 LT |
699 | } |
700 | ||
701 | ||
95da310e AC |
702 | static int whiteheat_write(struct tty_struct *tty, |
703 | struct usb_serial_port *port, const unsigned char *buf, int count) | |
1da177e4 | 704 | { |
1da177e4 LT |
705 | struct whiteheat_private *info = usb_get_serial_port_data(port); |
706 | struct whiteheat_urb_wrap *wrap; | |
707 | struct urb *urb; | |
708 | int result; | |
709 | int bytes; | |
710 | int sent = 0; | |
711 | unsigned long flags; | |
712 | struct list_head *tmp; | |
713 | ||
441b62c1 | 714 | dbg("%s - port %d", __func__, port->number); |
1da177e4 LT |
715 | |
716 | if (count == 0) { | |
441b62c1 | 717 | dbg("%s - write request of 0 bytes", __func__); |
1da177e4 LT |
718 | return (0); |
719 | } | |
720 | ||
721 | while (count) { | |
722 | spin_lock_irqsave(&info->lock, flags); | |
723 | if (list_empty(&info->tx_urbs_free)) { | |
724 | spin_unlock_irqrestore(&info->lock, flags); | |
725 | break; | |
726 | } | |
727 | tmp = list_first(&info->tx_urbs_free); | |
728 | list_del(tmp); | |
729 | spin_unlock_irqrestore(&info->lock, flags); | |
730 | ||
731 | wrap = list_entry(tmp, struct whiteheat_urb_wrap, list); | |
732 | urb = wrap->urb; | |
80359a9c AC |
733 | bytes = (count > port->bulk_out_size) ? |
734 | port->bulk_out_size : count; | |
735 | memcpy(urb->transfer_buffer, buf + sent, bytes); | |
1da177e4 | 736 | |
80359a9c AC |
737 | usb_serial_debug_data(debug, &port->dev, |
738 | __func__, bytes, urb->transfer_buffer); | |
1da177e4 | 739 | |
1da177e4 LT |
740 | urb->transfer_buffer_length = bytes; |
741 | result = usb_submit_urb(urb, GFP_ATOMIC); | |
742 | if (result) { | |
194343d9 GKH |
743 | dev_err(&port->dev, |
744 | "%s - failed submitting write urb, error %d\n", | |
745 | __func__, result); | |
1da177e4 LT |
746 | sent = result; |
747 | spin_lock_irqsave(&info->lock, flags); | |
748 | list_add(tmp, &info->tx_urbs_free); | |
749 | spin_unlock_irqrestore(&info->lock, flags); | |
750 | break; | |
751 | } else { | |
752 | sent += bytes; | |
753 | count -= bytes; | |
754 | spin_lock_irqsave(&info->lock, flags); | |
755 | list_add(tmp, &info->tx_urbs_submitted); | |
756 | spin_unlock_irqrestore(&info->lock, flags); | |
757 | } | |
758 | } | |
759 | ||
760 | return sent; | |
761 | } | |
762 | ||
95da310e | 763 | static int whiteheat_write_room(struct tty_struct *tty) |
1da177e4 | 764 | { |
95da310e | 765 | struct usb_serial_port *port = tty->driver_data; |
1da177e4 LT |
766 | struct whiteheat_private *info = usb_get_serial_port_data(port); |
767 | struct list_head *tmp; | |
768 | int room = 0; | |
769 | unsigned long flags; | |
770 | ||
441b62c1 | 771 | dbg("%s - port %d", __func__, port->number); |
80359a9c | 772 | |
1da177e4 LT |
773 | spin_lock_irqsave(&info->lock, flags); |
774 | list_for_each(tmp, &info->tx_urbs_free) | |
775 | room++; | |
776 | spin_unlock_irqrestore(&info->lock, flags); | |
777 | room *= port->bulk_out_size; | |
778 | ||
441b62c1 | 779 | dbg("%s - returns %d", __func__, room); |
1da177e4 LT |
780 | return (room); |
781 | } | |
782 | ||
60b33c13 | 783 | static int whiteheat_tiocmget(struct tty_struct *tty) |
1da177e4 | 784 | { |
95da310e | 785 | struct usb_serial_port *port = tty->driver_data; |
1da177e4 LT |
786 | struct whiteheat_private *info = usb_get_serial_port_data(port); |
787 | unsigned int modem_signals = 0; | |
788 | ||
441b62c1 | 789 | dbg("%s - port %d", __func__, port->number); |
1da177e4 LT |
790 | |
791 | firm_get_dtr_rts(port); | |
792 | if (info->mcr & UART_MCR_DTR) | |
793 | modem_signals |= TIOCM_DTR; | |
794 | if (info->mcr & UART_MCR_RTS) | |
795 | modem_signals |= TIOCM_RTS; | |
796 | ||
797 | return modem_signals; | |
798 | } | |
799 | ||
20b9d177 | 800 | static int whiteheat_tiocmset(struct tty_struct *tty, |
1da177e4 LT |
801 | unsigned int set, unsigned int clear) |
802 | { | |
95da310e | 803 | struct usb_serial_port *port = tty->driver_data; |
1da177e4 LT |
804 | struct whiteheat_private *info = usb_get_serial_port_data(port); |
805 | ||
441b62c1 | 806 | dbg("%s - port %d", __func__, port->number); |
1da177e4 LT |
807 | |
808 | if (set & TIOCM_RTS) | |
809 | info->mcr |= UART_MCR_RTS; | |
810 | if (set & TIOCM_DTR) | |
811 | info->mcr |= UART_MCR_DTR; | |
812 | ||
813 | if (clear & TIOCM_RTS) | |
814 | info->mcr &= ~UART_MCR_RTS; | |
815 | if (clear & TIOCM_DTR) | |
816 | info->mcr &= ~UART_MCR_DTR; | |
817 | ||
818 | firm_set_dtr(port, info->mcr & UART_MCR_DTR); | |
819 | firm_set_rts(port, info->mcr & UART_MCR_RTS); | |
820 | return 0; | |
821 | } | |
822 | ||
823 | ||
00a0d0d6 | 824 | static int whiteheat_ioctl(struct tty_struct *tty, |
80359a9c | 825 | unsigned int cmd, unsigned long arg) |
1da177e4 | 826 | { |
95da310e | 827 | struct usb_serial_port *port = tty->driver_data; |
1da177e4 LT |
828 | struct serial_struct serstruct; |
829 | void __user *user_arg = (void __user *)arg; | |
830 | ||
441b62c1 | 831 | dbg("%s - port %d, cmd 0x%.4x", __func__, port->number, cmd); |
1da177e4 LT |
832 | |
833 | switch (cmd) { | |
80359a9c AC |
834 | case TIOCGSERIAL: |
835 | memset(&serstruct, 0, sizeof(serstruct)); | |
836 | serstruct.type = PORT_16654; | |
837 | serstruct.line = port->serial->minor; | |
838 | serstruct.port = port->number; | |
839 | serstruct.flags = ASYNC_SKIP_TEST | ASYNC_AUTO_IRQ; | |
840 | serstruct.xmit_fifo_size = port->bulk_out_size; | |
841 | serstruct.custom_divisor = 0; | |
842 | serstruct.baud_base = 460800; | |
843 | serstruct.close_delay = CLOSING_DELAY; | |
844 | serstruct.closing_wait = CLOSING_DELAY; | |
845 | ||
846 | if (copy_to_user(user_arg, &serstruct, sizeof(serstruct))) | |
847 | return -EFAULT; | |
848 | break; | |
849 | default: | |
850 | break; | |
1da177e4 LT |
851 | } |
852 | ||
853 | return -ENOIOCTLCMD; | |
854 | } | |
855 | ||
856 | ||
80359a9c AC |
857 | static void whiteheat_set_termios(struct tty_struct *tty, |
858 | struct usb_serial_port *port, struct ktermios *old_termios) | |
1da177e4 | 859 | { |
95da310e | 860 | firm_setup_port(tty); |
1da177e4 LT |
861 | } |
862 | ||
80359a9c AC |
863 | static void whiteheat_break_ctl(struct tty_struct *tty, int break_state) |
864 | { | |
95da310e | 865 | struct usb_serial_port *port = tty->driver_data; |
1da177e4 LT |
866 | firm_set_break(port, break_state); |
867 | } | |
868 | ||
869 | ||
95da310e | 870 | static int whiteheat_chars_in_buffer(struct tty_struct *tty) |
1da177e4 | 871 | { |
95da310e | 872 | struct usb_serial_port *port = tty->driver_data; |
1da177e4 LT |
873 | struct whiteheat_private *info = usb_get_serial_port_data(port); |
874 | struct list_head *tmp; | |
875 | struct whiteheat_urb_wrap *wrap; | |
876 | int chars = 0; | |
877 | unsigned long flags; | |
878 | ||
441b62c1 | 879 | dbg("%s - port %d", __func__, port->number); |
1da177e4 LT |
880 | |
881 | spin_lock_irqsave(&info->lock, flags); | |
882 | list_for_each(tmp, &info->tx_urbs_submitted) { | |
883 | wrap = list_entry(tmp, struct whiteheat_urb_wrap, list); | |
884 | chars += wrap->urb->transfer_buffer_length; | |
885 | } | |
886 | spin_unlock_irqrestore(&info->lock, flags); | |
887 | ||
80359a9c | 888 | dbg("%s - returns %d", __func__, chars); |
08a2b3b6 | 889 | return chars; |
1da177e4 LT |
890 | } |
891 | ||
892 | ||
80359a9c | 893 | static void whiteheat_throttle(struct tty_struct *tty) |
1da177e4 | 894 | { |
95da310e | 895 | struct usb_serial_port *port = tty->driver_data; |
1da177e4 | 896 | struct whiteheat_private *info = usb_get_serial_port_data(port); |
1da177e4 | 897 | |
441b62c1 | 898 | dbg("%s - port %d", __func__, port->number); |
1da177e4 | 899 | |
63832515 | 900 | spin_lock_irq(&info->lock); |
1da177e4 | 901 | info->flags |= THROTTLED; |
63832515 | 902 | spin_unlock_irq(&info->lock); |
1da177e4 LT |
903 | } |
904 | ||
905 | ||
80359a9c | 906 | static void whiteheat_unthrottle(struct tty_struct *tty) |
1da177e4 | 907 | { |
95da310e | 908 | struct usb_serial_port *port = tty->driver_data; |
1da177e4 LT |
909 | struct whiteheat_private *info = usb_get_serial_port_data(port); |
910 | int actually_throttled; | |
1da177e4 | 911 | |
441b62c1 | 912 | dbg("%s - port %d", __func__, port->number); |
1da177e4 | 913 | |
63832515 | 914 | spin_lock_irq(&info->lock); |
1da177e4 LT |
915 | actually_throttled = info->flags & ACTUALLY_THROTTLED; |
916 | info->flags &= ~(THROTTLED | ACTUALLY_THROTTLED); | |
63832515 | 917 | spin_unlock_irq(&info->lock); |
1da177e4 LT |
918 | |
919 | if (actually_throttled) | |
c4028958 | 920 | rx_data_softint(&info->rx_work); |
1da177e4 LT |
921 | } |
922 | ||
923 | ||
924 | /***************************************************************************** | |
925 | * Connect Tech's White Heat callback routines | |
926 | *****************************************************************************/ | |
08a2b3b6 | 927 | static void command_port_write_callback(struct urb *urb) |
1da177e4 | 928 | { |
05400013 GKH |
929 | int status = urb->status; |
930 | ||
441b62c1 | 931 | dbg("%s", __func__); |
1da177e4 | 932 | |
05400013 GKH |
933 | if (status) { |
934 | dbg("nonzero urb status: %d", status); | |
1da177e4 LT |
935 | return; |
936 | } | |
937 | } | |
938 | ||
939 | ||
08a2b3b6 | 940 | static void command_port_read_callback(struct urb *urb) |
1da177e4 | 941 | { |
cdc97792 | 942 | struct usb_serial_port *command_port = urb->context; |
1da177e4 | 943 | struct whiteheat_command_private *command_info; |
05400013 | 944 | int status = urb->status; |
1da177e4 LT |
945 | unsigned char *data = urb->transfer_buffer; |
946 | int result; | |
1da177e4 | 947 | |
441b62c1 | 948 | dbg("%s", __func__); |
1da177e4 | 949 | |
08a2b3b6 ON |
950 | command_info = usb_get_serial_port_data(command_port); |
951 | if (!command_info) { | |
80359a9c | 952 | dbg("%s - command_info is NULL, exiting.", __func__); |
08a2b3b6 ON |
953 | return; |
954 | } | |
05400013 | 955 | if (status) { |
441b62c1 | 956 | dbg("%s - nonzero urb status: %d", __func__, status); |
05400013 | 957 | if (status != -ENOENT) |
08a2b3b6 ON |
958 | command_info->command_finished = WHITEHEAT_CMD_FAILURE; |
959 | wake_up(&command_info->wait_command); | |
1da177e4 LT |
960 | return; |
961 | } | |
962 | ||
80359a9c AC |
963 | usb_serial_debug_data(debug, &command_port->dev, |
964 | __func__, urb->actual_length, data); | |
1da177e4 | 965 | |
1da177e4 LT |
966 | if (data[0] == WHITEHEAT_CMD_COMPLETE) { |
967 | command_info->command_finished = WHITEHEAT_CMD_COMPLETE; | |
08a2b3b6 | 968 | wake_up(&command_info->wait_command); |
1da177e4 LT |
969 | } else if (data[0] == WHITEHEAT_CMD_FAILURE) { |
970 | command_info->command_finished = WHITEHEAT_CMD_FAILURE; | |
08a2b3b6 | 971 | wake_up(&command_info->wait_command); |
1da177e4 | 972 | } else if (data[0] == WHITEHEAT_EVENT) { |
80359a9c AC |
973 | /* These are unsolicited reports from the firmware, hence no |
974 | waiting command to wakeup */ | |
441b62c1 | 975 | dbg("%s - event received", __func__); |
1da177e4 | 976 | } else if (data[0] == WHITEHEAT_GET_DTR_RTS) { |
80359a9c AC |
977 | memcpy(command_info->result_buffer, &data[1], |
978 | urb->actual_length - 1); | |
1da177e4 | 979 | command_info->command_finished = WHITEHEAT_CMD_COMPLETE; |
08a2b3b6 | 980 | wake_up(&command_info->wait_command); |
80359a9c | 981 | } else |
441b62c1 | 982 | dbg("%s - bad reply from firmware", __func__); |
80359a9c | 983 | |
1da177e4 | 984 | /* Continue trying to always read */ |
1da177e4 | 985 | result = usb_submit_urb(command_port->read_urb, GFP_ATOMIC); |
1da177e4 | 986 | if (result) |
80359a9c AC |
987 | dbg("%s - failed resubmitting read urb, error %d", |
988 | __func__, result); | |
1da177e4 LT |
989 | } |
990 | ||
991 | ||
7d12e780 | 992 | static void whiteheat_read_callback(struct urb *urb) |
1da177e4 | 993 | { |
cdc97792 | 994 | struct usb_serial_port *port = urb->context; |
1da177e4 LT |
995 | struct whiteheat_urb_wrap *wrap; |
996 | unsigned char *data = urb->transfer_buffer; | |
997 | struct whiteheat_private *info = usb_get_serial_port_data(port); | |
05400013 | 998 | int status = urb->status; |
1da177e4 | 999 | |
441b62c1 | 1000 | dbg("%s - port %d", __func__, port->number); |
1da177e4 LT |
1001 | |
1002 | spin_lock(&info->lock); | |
1003 | wrap = urb_to_wrap(urb, &info->rx_urbs_submitted); | |
1004 | if (!wrap) { | |
1005 | spin_unlock(&info->lock); | |
194343d9 | 1006 | dev_err(&port->dev, "%s - Not my urb!\n", __func__); |
1da177e4 LT |
1007 | return; |
1008 | } | |
1009 | list_del(&wrap->list); | |
1010 | spin_unlock(&info->lock); | |
1011 | ||
05400013 GKH |
1012 | if (status) { |
1013 | dbg("%s - nonzero read bulk status received: %d", | |
441b62c1 | 1014 | __func__, status); |
1da177e4 LT |
1015 | spin_lock(&info->lock); |
1016 | list_add(&wrap->list, &info->rx_urbs_free); | |
1017 | spin_unlock(&info->lock); | |
1018 | return; | |
1019 | } | |
1020 | ||
80359a9c AC |
1021 | usb_serial_debug_data(debug, &port->dev, |
1022 | __func__, urb->actual_length, data); | |
1da177e4 LT |
1023 | |
1024 | spin_lock(&info->lock); | |
1025 | list_add_tail(&wrap->list, &info->rx_urb_q); | |
1026 | if (info->flags & THROTTLED) { | |
1027 | info->flags |= ACTUALLY_THROTTLED; | |
1028 | spin_unlock(&info->lock); | |
1029 | return; | |
1030 | } | |
1031 | spin_unlock(&info->lock); | |
1032 | ||
1033 | schedule_work(&info->rx_work); | |
1034 | } | |
1035 | ||
1036 | ||
7d12e780 | 1037 | static void whiteheat_write_callback(struct urb *urb) |
1da177e4 | 1038 | { |
cdc97792 | 1039 | struct usb_serial_port *port = urb->context; |
1da177e4 LT |
1040 | struct whiteheat_private *info = usb_get_serial_port_data(port); |
1041 | struct whiteheat_urb_wrap *wrap; | |
05400013 | 1042 | int status = urb->status; |
1da177e4 | 1043 | |
441b62c1 | 1044 | dbg("%s - port %d", __func__, port->number); |
1da177e4 LT |
1045 | |
1046 | spin_lock(&info->lock); | |
1047 | wrap = urb_to_wrap(urb, &info->tx_urbs_submitted); | |
1048 | if (!wrap) { | |
1049 | spin_unlock(&info->lock); | |
194343d9 | 1050 | dev_err(&port->dev, "%s - Not my urb!\n", __func__); |
1da177e4 LT |
1051 | return; |
1052 | } | |
179e0917 | 1053 | list_move(&wrap->list, &info->tx_urbs_free); |
1da177e4 LT |
1054 | spin_unlock(&info->lock); |
1055 | ||
05400013 GKH |
1056 | if (status) { |
1057 | dbg("%s - nonzero write bulk status received: %d", | |
441b62c1 | 1058 | __func__, status); |
1da177e4 LT |
1059 | return; |
1060 | } | |
1061 | ||
cf2c7481 | 1062 | usb_serial_port_softint(port); |
1da177e4 LT |
1063 | } |
1064 | ||
1065 | ||
1066 | /***************************************************************************** | |
1067 | * Connect Tech's White Heat firmware interface | |
1068 | *****************************************************************************/ | |
80359a9c AC |
1069 | static int firm_send_command(struct usb_serial_port *port, __u8 command, |
1070 | __u8 *data, __u8 datasize) | |
1da177e4 LT |
1071 | { |
1072 | struct usb_serial_port *command_port; | |
1073 | struct whiteheat_command_private *command_info; | |
1074 | struct whiteheat_private *info; | |
1075 | __u8 *transfer_buffer; | |
1076 | int retval = 0; | |
08a2b3b6 | 1077 | int t; |
1da177e4 | 1078 | |
441b62c1 | 1079 | dbg("%s - command %d", __func__, command); |
1da177e4 LT |
1080 | |
1081 | command_port = port->serial->port[COMMAND_PORT]; | |
1082 | command_info = usb_get_serial_port_data(command_port); | |
08a2b3b6 | 1083 | mutex_lock(&command_info->mutex); |
38c3cb5b | 1084 | command_info->command_finished = false; |
80359a9c | 1085 | |
1da177e4 LT |
1086 | transfer_buffer = (__u8 *)command_port->write_urb->transfer_buffer; |
1087 | transfer_buffer[0] = command; | |
80359a9c | 1088 | memcpy(&transfer_buffer[1], data, datasize); |
1da177e4 | 1089 | command_port->write_urb->transfer_buffer_length = datasize + 1; |
80359a9c | 1090 | retval = usb_submit_urb(command_port->write_urb, GFP_NOIO); |
1da177e4 | 1091 | if (retval) { |
441b62c1 | 1092 | dbg("%s - submit urb failed", __func__); |
1da177e4 LT |
1093 | goto exit; |
1094 | } | |
1da177e4 LT |
1095 | |
1096 | /* wait for the command to complete */ | |
08a2b3b6 | 1097 | t = wait_event_timeout(command_info->wait_command, |
38c3cb5b | 1098 | (bool)command_info->command_finished, COMMAND_TIMEOUT); |
08a2b3b6 ON |
1099 | if (!t) |
1100 | usb_kill_urb(command_port->write_urb); | |
1da177e4 | 1101 | |
38c3cb5b | 1102 | if (command_info->command_finished == false) { |
441b62c1 | 1103 | dbg("%s - command timed out.", __func__); |
1da177e4 LT |
1104 | retval = -ETIMEDOUT; |
1105 | goto exit; | |
1106 | } | |
1107 | ||
1108 | if (command_info->command_finished == WHITEHEAT_CMD_FAILURE) { | |
441b62c1 | 1109 | dbg("%s - command failed.", __func__); |
1da177e4 LT |
1110 | retval = -EIO; |
1111 | goto exit; | |
1112 | } | |
1113 | ||
1114 | if (command_info->command_finished == WHITEHEAT_CMD_COMPLETE) { | |
441b62c1 | 1115 | dbg("%s - command completed.", __func__); |
1da177e4 | 1116 | switch (command) { |
80359a9c AC |
1117 | case WHITEHEAT_GET_DTR_RTS: |
1118 | info = usb_get_serial_port_data(port); | |
1119 | memcpy(&info->mcr, command_info->result_buffer, | |
1120 | sizeof(struct whiteheat_dr_info)); | |
1da177e4 LT |
1121 | break; |
1122 | } | |
1123 | } | |
1da177e4 | 1124 | exit: |
08a2b3b6 | 1125 | mutex_unlock(&command_info->mutex); |
1da177e4 LT |
1126 | return retval; |
1127 | } | |
1128 | ||
1129 | ||
80359a9c AC |
1130 | static int firm_open(struct usb_serial_port *port) |
1131 | { | |
1da177e4 LT |
1132 | struct whiteheat_simple open_command; |
1133 | ||
1134 | open_command.port = port->number - port->serial->minor + 1; | |
80359a9c AC |
1135 | return firm_send_command(port, WHITEHEAT_OPEN, |
1136 | (__u8 *)&open_command, sizeof(open_command)); | |
1da177e4 LT |
1137 | } |
1138 | ||
1139 | ||
80359a9c AC |
1140 | static int firm_close(struct usb_serial_port *port) |
1141 | { | |
1da177e4 LT |
1142 | struct whiteheat_simple close_command; |
1143 | ||
1144 | close_command.port = port->number - port->serial->minor + 1; | |
80359a9c AC |
1145 | return firm_send_command(port, WHITEHEAT_CLOSE, |
1146 | (__u8 *)&close_command, sizeof(close_command)); | |
1da177e4 LT |
1147 | } |
1148 | ||
1149 | ||
fe1ae7fd | 1150 | static void firm_setup_port(struct tty_struct *tty) |
80359a9c | 1151 | { |
95da310e | 1152 | struct usb_serial_port *port = tty->driver_data; |
1da177e4 | 1153 | struct whiteheat_port_settings port_settings; |
95da310e | 1154 | unsigned int cflag = tty->termios->c_cflag; |
1da177e4 LT |
1155 | |
1156 | port_settings.port = port->number + 1; | |
1157 | ||
1158 | /* get the byte size */ | |
1159 | switch (cflag & CSIZE) { | |
80359a9c AC |
1160 | case CS5: port_settings.bits = 5; break; |
1161 | case CS6: port_settings.bits = 6; break; | |
1162 | case CS7: port_settings.bits = 7; break; | |
1163 | default: | |
1164 | case CS8: port_settings.bits = 8; break; | |
1da177e4 | 1165 | } |
441b62c1 | 1166 | dbg("%s - data bits = %d", __func__, port_settings.bits); |
80359a9c | 1167 | |
1da177e4 LT |
1168 | /* determine the parity */ |
1169 | if (cflag & PARENB) | |
1170 | if (cflag & CMSPAR) | |
1171 | if (cflag & PARODD) | |
1172 | port_settings.parity = WHITEHEAT_PAR_MARK; | |
1173 | else | |
1174 | port_settings.parity = WHITEHEAT_PAR_SPACE; | |
1175 | else | |
1176 | if (cflag & PARODD) | |
1177 | port_settings.parity = WHITEHEAT_PAR_ODD; | |
1178 | else | |
1179 | port_settings.parity = WHITEHEAT_PAR_EVEN; | |
1180 | else | |
1181 | port_settings.parity = WHITEHEAT_PAR_NONE; | |
441b62c1 | 1182 | dbg("%s - parity = %c", __func__, port_settings.parity); |
1da177e4 LT |
1183 | |
1184 | /* figure out the stop bits requested */ | |
1185 | if (cflag & CSTOPB) | |
1186 | port_settings.stop = 2; | |
1187 | else | |
1188 | port_settings.stop = 1; | |
441b62c1 | 1189 | dbg("%s - stop bits = %d", __func__, port_settings.stop); |
1da177e4 LT |
1190 | |
1191 | /* figure out the flow control settings */ | |
1192 | if (cflag & CRTSCTS) | |
80359a9c AC |
1193 | port_settings.hflow = (WHITEHEAT_HFLOW_CTS | |
1194 | WHITEHEAT_HFLOW_RTS); | |
1da177e4 LT |
1195 | else |
1196 | port_settings.hflow = WHITEHEAT_HFLOW_NONE; | |
441b62c1 | 1197 | dbg("%s - hardware flow control = %s %s %s %s", __func__, |
1da177e4 LT |
1198 | (port_settings.hflow & WHITEHEAT_HFLOW_CTS) ? "CTS" : "", |
1199 | (port_settings.hflow & WHITEHEAT_HFLOW_RTS) ? "RTS" : "", | |
1200 | (port_settings.hflow & WHITEHEAT_HFLOW_DSR) ? "DSR" : "", | |
1201 | (port_settings.hflow & WHITEHEAT_HFLOW_DTR) ? "DTR" : ""); | |
80359a9c | 1202 | |
1da177e4 | 1203 | /* determine software flow control */ |
95da310e | 1204 | if (I_IXOFF(tty)) |
1da177e4 LT |
1205 | port_settings.sflow = WHITEHEAT_SFLOW_RXTX; |
1206 | else | |
1207 | port_settings.sflow = WHITEHEAT_SFLOW_NONE; | |
441b62c1 | 1208 | dbg("%s - software flow control = %c", __func__, port_settings.sflow); |
80359a9c | 1209 | |
95da310e AC |
1210 | port_settings.xon = START_CHAR(tty); |
1211 | port_settings.xoff = STOP_CHAR(tty); | |
80359a9c AC |
1212 | dbg("%s - XON = %2x, XOFF = %2x", |
1213 | __func__, port_settings.xon, port_settings.xoff); | |
1da177e4 LT |
1214 | |
1215 | /* get the baud rate wanted */ | |
95da310e | 1216 | port_settings.baud = tty_get_baud_rate(tty); |
441b62c1 | 1217 | dbg("%s - baud rate = %d", __func__, port_settings.baud); |
1da177e4 | 1218 | |
01d1df29 | 1219 | /* fixme: should set validated settings */ |
95da310e | 1220 | tty_encode_baud_rate(tty, port_settings.baud, port_settings.baud); |
1da177e4 LT |
1221 | /* handle any settings that aren't specified in the tty structure */ |
1222 | port_settings.lloop = 0; | |
80359a9c | 1223 | |
1da177e4 | 1224 | /* now send the message to the device */ |
fe1ae7fd | 1225 | firm_send_command(port, WHITEHEAT_SETUP_PORT, |
80359a9c | 1226 | (__u8 *)&port_settings, sizeof(port_settings)); |
1da177e4 LT |
1227 | } |
1228 | ||
1229 | ||
80359a9c AC |
1230 | static int firm_set_rts(struct usb_serial_port *port, __u8 onoff) |
1231 | { | |
1da177e4 LT |
1232 | struct whiteheat_set_rdb rts_command; |
1233 | ||
1234 | rts_command.port = port->number - port->serial->minor + 1; | |
1235 | rts_command.state = onoff; | |
80359a9c AC |
1236 | return firm_send_command(port, WHITEHEAT_SET_RTS, |
1237 | (__u8 *)&rts_command, sizeof(rts_command)); | |
1da177e4 LT |
1238 | } |
1239 | ||
1240 | ||
80359a9c AC |
1241 | static int firm_set_dtr(struct usb_serial_port *port, __u8 onoff) |
1242 | { | |
1da177e4 LT |
1243 | struct whiteheat_set_rdb dtr_command; |
1244 | ||
1245 | dtr_command.port = port->number - port->serial->minor + 1; | |
1246 | dtr_command.state = onoff; | |
72e27412 | 1247 | return firm_send_command(port, WHITEHEAT_SET_DTR, |
80359a9c | 1248 | (__u8 *)&dtr_command, sizeof(dtr_command)); |
1da177e4 LT |
1249 | } |
1250 | ||
1251 | ||
80359a9c AC |
1252 | static int firm_set_break(struct usb_serial_port *port, __u8 onoff) |
1253 | { | |
1da177e4 LT |
1254 | struct whiteheat_set_rdb break_command; |
1255 | ||
1256 | break_command.port = port->number - port->serial->minor + 1; | |
1257 | break_command.state = onoff; | |
72e27412 | 1258 | return firm_send_command(port, WHITEHEAT_SET_BREAK, |
80359a9c | 1259 | (__u8 *)&break_command, sizeof(break_command)); |
1da177e4 LT |
1260 | } |
1261 | ||
1262 | ||
80359a9c AC |
1263 | static int firm_purge(struct usb_serial_port *port, __u8 rxtx) |
1264 | { | |
1da177e4 LT |
1265 | struct whiteheat_purge purge_command; |
1266 | ||
1267 | purge_command.port = port->number - port->serial->minor + 1; | |
1268 | purge_command.what = rxtx; | |
80359a9c AC |
1269 | return firm_send_command(port, WHITEHEAT_PURGE, |
1270 | (__u8 *)&purge_command, sizeof(purge_command)); | |
1da177e4 LT |
1271 | } |
1272 | ||
1273 | ||
80359a9c AC |
1274 | static int firm_get_dtr_rts(struct usb_serial_port *port) |
1275 | { | |
1da177e4 LT |
1276 | struct whiteheat_simple get_dr_command; |
1277 | ||
1278 | get_dr_command.port = port->number - port->serial->minor + 1; | |
80359a9c AC |
1279 | return firm_send_command(port, WHITEHEAT_GET_DTR_RTS, |
1280 | (__u8 *)&get_dr_command, sizeof(get_dr_command)); | |
1da177e4 LT |
1281 | } |
1282 | ||
1283 | ||
80359a9c AC |
1284 | static int firm_report_tx_done(struct usb_serial_port *port) |
1285 | { | |
1da177e4 LT |
1286 | struct whiteheat_simple close_command; |
1287 | ||
1288 | close_command.port = port->number - port->serial->minor + 1; | |
80359a9c AC |
1289 | return firm_send_command(port, WHITEHEAT_REPORT_TX_DONE, |
1290 | (__u8 *)&close_command, sizeof(close_command)); | |
1da177e4 LT |
1291 | } |
1292 | ||
1293 | ||
1294 | /***************************************************************************** | |
1295 | * Connect Tech's White Heat utility functions | |
1296 | *****************************************************************************/ | |
1297 | static int start_command_port(struct usb_serial *serial) | |
1298 | { | |
1299 | struct usb_serial_port *command_port; | |
1300 | struct whiteheat_command_private *command_info; | |
1da177e4 | 1301 | int retval = 0; |
80359a9c | 1302 | |
1da177e4 LT |
1303 | command_port = serial->port[COMMAND_PORT]; |
1304 | command_info = usb_get_serial_port_data(command_port); | |
08a2b3b6 | 1305 | mutex_lock(&command_info->mutex); |
1da177e4 LT |
1306 | if (!command_info->port_running) { |
1307 | /* Work around HCD bugs */ | |
1308 | usb_clear_halt(serial->dev, command_port->read_urb->pipe); | |
1309 | ||
1da177e4 LT |
1310 | retval = usb_submit_urb(command_port->read_urb, GFP_KERNEL); |
1311 | if (retval) { | |
194343d9 GKH |
1312 | dev_err(&serial->dev->dev, |
1313 | "%s - failed submitting read urb, error %d\n", | |
1314 | __func__, retval); | |
1da177e4 LT |
1315 | goto exit; |
1316 | } | |
1317 | } | |
1318 | command_info->port_running++; | |
1319 | ||
1320 | exit: | |
08a2b3b6 | 1321 | mutex_unlock(&command_info->mutex); |
1da177e4 LT |
1322 | return retval; |
1323 | } | |
1324 | ||
1325 | ||
1326 | static void stop_command_port(struct usb_serial *serial) | |
1327 | { | |
1328 | struct usb_serial_port *command_port; | |
1329 | struct whiteheat_command_private *command_info; | |
1da177e4 LT |
1330 | |
1331 | command_port = serial->port[COMMAND_PORT]; | |
1332 | command_info = usb_get_serial_port_data(command_port); | |
08a2b3b6 | 1333 | mutex_lock(&command_info->mutex); |
1da177e4 LT |
1334 | command_info->port_running--; |
1335 | if (!command_info->port_running) | |
1336 | usb_kill_urb(command_port->read_urb); | |
08a2b3b6 | 1337 | mutex_unlock(&command_info->mutex); |
1da177e4 LT |
1338 | } |
1339 | ||
1340 | ||
1341 | static int start_port_read(struct usb_serial_port *port) | |
1342 | { | |
1343 | struct whiteheat_private *info = usb_get_serial_port_data(port); | |
1344 | struct whiteheat_urb_wrap *wrap; | |
1345 | struct urb *urb; | |
1346 | int retval = 0; | |
1347 | unsigned long flags; | |
1348 | struct list_head *tmp; | |
1349 | struct list_head *tmp2; | |
1350 | ||
1351 | spin_lock_irqsave(&info->lock, flags); | |
1352 | ||
1353 | list_for_each_safe(tmp, tmp2, &info->rx_urbs_free) { | |
1354 | list_del(tmp); | |
1355 | wrap = list_entry(tmp, struct whiteheat_urb_wrap, list); | |
1356 | urb = wrap->urb; | |
08a2b3b6 | 1357 | spin_unlock_irqrestore(&info->lock, flags); |
1da177e4 LT |
1358 | retval = usb_submit_urb(urb, GFP_KERNEL); |
1359 | if (retval) { | |
08a2b3b6 | 1360 | spin_lock_irqsave(&info->lock, flags); |
1da177e4 LT |
1361 | list_add(tmp, &info->rx_urbs_free); |
1362 | list_for_each_safe(tmp, tmp2, &info->rx_urbs_submitted) { | |
1363 | wrap = list_entry(tmp, struct whiteheat_urb_wrap, list); | |
1364 | urb = wrap->urb; | |
08a2b3b6 ON |
1365 | list_del(tmp); |
1366 | spin_unlock_irqrestore(&info->lock, flags); | |
1da177e4 | 1367 | usb_kill_urb(urb); |
08a2b3b6 ON |
1368 | spin_lock_irqsave(&info->lock, flags); |
1369 | list_add(tmp, &info->rx_urbs_free); | |
1da177e4 LT |
1370 | } |
1371 | break; | |
1372 | } | |
08a2b3b6 | 1373 | spin_lock_irqsave(&info->lock, flags); |
1da177e4 LT |
1374 | list_add(tmp, &info->rx_urbs_submitted); |
1375 | } | |
1376 | ||
1377 | spin_unlock_irqrestore(&info->lock, flags); | |
1378 | ||
1379 | return retval; | |
1380 | } | |
1381 | ||
1382 | ||
80359a9c AC |
1383 | static struct whiteheat_urb_wrap *urb_to_wrap(struct urb *urb, |
1384 | struct list_head *head) | |
1da177e4 LT |
1385 | { |
1386 | struct whiteheat_urb_wrap *wrap; | |
1387 | struct list_head *tmp; | |
1388 | ||
1389 | list_for_each(tmp, head) { | |
1390 | wrap = list_entry(tmp, struct whiteheat_urb_wrap, list); | |
1391 | if (wrap->urb == urb) | |
1392 | return wrap; | |
1393 | } | |
1394 | ||
1395 | return NULL; | |
1396 | } | |
1397 | ||
1398 | ||
1399 | static struct list_head *list_first(struct list_head *head) | |
1400 | { | |
1401 | return head->next; | |
1402 | } | |
1403 | ||
1404 | ||
c4028958 | 1405 | static void rx_data_softint(struct work_struct *work) |
1da177e4 | 1406 | { |
c4028958 DH |
1407 | struct whiteheat_private *info = |
1408 | container_of(work, struct whiteheat_private, rx_work); | |
1409 | struct usb_serial_port *port = info->port; | |
4a90f09b | 1410 | struct tty_struct *tty = tty_port_tty_get(&port->port); |
1da177e4 LT |
1411 | struct whiteheat_urb_wrap *wrap; |
1412 | struct urb *urb; | |
1413 | unsigned long flags; | |
1414 | struct list_head *tmp; | |
1415 | struct list_head *tmp2; | |
1416 | int result; | |
1417 | int sent = 0; | |
1418 | ||
1419 | spin_lock_irqsave(&info->lock, flags); | |
1420 | if (info->flags & THROTTLED) { | |
1421 | spin_unlock_irqrestore(&info->lock, flags); | |
4a90f09b | 1422 | goto out; |
1da177e4 LT |
1423 | } |
1424 | ||
1425 | list_for_each_safe(tmp, tmp2, &info->rx_urb_q) { | |
1426 | list_del(tmp); | |
1427 | spin_unlock_irqrestore(&info->lock, flags); | |
1428 | ||
1429 | wrap = list_entry(tmp, struct whiteheat_urb_wrap, list); | |
1430 | urb = wrap->urb; | |
1431 | ||
67ccbd6f AC |
1432 | if (tty && urb->actual_length) |
1433 | sent += tty_insert_flip_string(tty, | |
1434 | urb->transfer_buffer, urb->actual_length); | |
1da177e4 | 1435 | |
1da177e4 LT |
1436 | result = usb_submit_urb(urb, GFP_ATOMIC); |
1437 | if (result) { | |
194343d9 GKH |
1438 | dev_err(&port->dev, |
1439 | "%s - failed resubmitting read urb, error %d\n", | |
80359a9c | 1440 | __func__, result); |
1da177e4 LT |
1441 | spin_lock_irqsave(&info->lock, flags); |
1442 | list_add(tmp, &info->rx_urbs_free); | |
1443 | continue; | |
1444 | } | |
1445 | ||
1446 | spin_lock_irqsave(&info->lock, flags); | |
1447 | list_add(tmp, &info->rx_urbs_submitted); | |
1448 | } | |
1449 | spin_unlock_irqrestore(&info->lock, flags); | |
1450 | ||
1451 | if (sent) | |
1452 | tty_flip_buffer_push(tty); | |
4a90f09b AC |
1453 | out: |
1454 | tty_kref_put(tty); | |
1da177e4 LT |
1455 | } |
1456 | ||
1457 | ||
1458 | /***************************************************************************** | |
1459 | * Connect Tech's White Heat module functions | |
1460 | *****************************************************************************/ | |
80359a9c | 1461 | static int __init whiteheat_init(void) |
1da177e4 LT |
1462 | { |
1463 | int retval; | |
1464 | retval = usb_serial_register(&whiteheat_fake_device); | |
1465 | if (retval) | |
1466 | goto failed_fake_register; | |
1467 | retval = usb_serial_register(&whiteheat_device); | |
1468 | if (retval) | |
1469 | goto failed_device_register; | |
1470 | retval = usb_register(&whiteheat_driver); | |
1471 | if (retval) | |
1472 | goto failed_usb_register; | |
c197a8db GKH |
1473 | printk(KERN_INFO KBUILD_MODNAME ": " DRIVER_VERSION ":" |
1474 | DRIVER_DESC "\n"); | |
1da177e4 LT |
1475 | return 0; |
1476 | failed_usb_register: | |
1477 | usb_serial_deregister(&whiteheat_device); | |
1478 | failed_device_register: | |
1479 | usb_serial_deregister(&whiteheat_fake_device); | |
1480 | failed_fake_register: | |
1481 | return retval; | |
1482 | } | |
1483 | ||
1484 | ||
80359a9c | 1485 | static void __exit whiteheat_exit(void) |
1da177e4 | 1486 | { |
80359a9c AC |
1487 | usb_deregister(&whiteheat_driver); |
1488 | usb_serial_deregister(&whiteheat_fake_device); | |
1489 | usb_serial_deregister(&whiteheat_device); | |
1da177e4 LT |
1490 | } |
1491 | ||
1492 | ||
1493 | module_init(whiteheat_init); | |
1494 | module_exit(whiteheat_exit); | |
1495 | ||
80359a9c AC |
1496 | MODULE_AUTHOR(DRIVER_AUTHOR); |
1497 | MODULE_DESCRIPTION(DRIVER_DESC); | |
1da177e4 LT |
1498 | MODULE_LICENSE("GPL"); |
1499 | ||
ec6752f5 DW |
1500 | MODULE_FIRMWARE("whiteheat.fw"); |
1501 | MODULE_FIRMWARE("whiteheat_loader.fw"); | |
1502 | ||
1da177e4 LT |
1503 | module_param(urb_pool_size, int, 0); |
1504 | MODULE_PARM_DESC(urb_pool_size, "Number of urbs to use for buffering"); | |
1505 | ||
1506 | module_param(debug, bool, S_IRUGO | S_IWUSR); | |
1507 | MODULE_PARM_DESC(debug, "Debug enabled or not"); |