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Commit | Line | Data |
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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> |
cc183e2a | 35 | #include <linux/usb/ezusb.h> |
1da177e4 LT |
36 | #include "whiteheat.h" /* WhiteHEAT specific commands */ |
37 | ||
1da177e4 LT |
38 | #ifndef CMSPAR |
39 | #define CMSPAR 0 | |
40 | #endif | |
41 | ||
42 | /* | |
43 | * Version Information | |
44 | */ | |
1da177e4 LT |
45 | #define DRIVER_AUTHOR "Greg Kroah-Hartman <greg@kroah.com>, Stuart MacDonald <stuartm@connecttech.com>" |
46 | #define DRIVER_DESC "USB ConnectTech WhiteHEAT driver" | |
47 | ||
48 | #define CONNECT_TECH_VENDOR_ID 0x0710 | |
49 | #define CONNECT_TECH_FAKE_WHITE_HEAT_ID 0x0001 | |
50 | #define CONNECT_TECH_WHITE_HEAT_ID 0x8001 | |
51 | ||
52 | /* | |
53 | ID tables for whiteheat are unusual, because we want to different | |
54 | things for different versions of the device. Eventually, this | |
55 | will be doable from a single table. But, for now, we define two | |
56 | separate ID tables, and then a third table that combines them | |
57 | just for the purpose of exporting the autoloading information. | |
58 | */ | |
7d40d7e8 | 59 | static const struct usb_device_id id_table_std[] = { |
1da177e4 LT |
60 | { USB_DEVICE(CONNECT_TECH_VENDOR_ID, CONNECT_TECH_WHITE_HEAT_ID) }, |
61 | { } /* Terminating entry */ | |
62 | }; | |
63 | ||
7d40d7e8 | 64 | static const struct usb_device_id id_table_prerenumeration[] = { |
1da177e4 LT |
65 | { USB_DEVICE(CONNECT_TECH_VENDOR_ID, CONNECT_TECH_FAKE_WHITE_HEAT_ID) }, |
66 | { } /* Terminating entry */ | |
67 | }; | |
68 | ||
7d40d7e8 | 69 | static const struct usb_device_id id_table_combined[] = { |
1da177e4 LT |
70 | { USB_DEVICE(CONNECT_TECH_VENDOR_ID, CONNECT_TECH_WHITE_HEAT_ID) }, |
71 | { USB_DEVICE(CONNECT_TECH_VENDOR_ID, CONNECT_TECH_FAKE_WHITE_HEAT_ID) }, | |
72 | { } /* Terminating entry */ | |
73 | }; | |
74 | ||
80359a9c | 75 | MODULE_DEVICE_TABLE(usb, id_table_combined); |
1da177e4 | 76 | |
1da177e4 LT |
77 | |
78 | /* function prototypes for the Connect Tech WhiteHEAT prerenumeration device */ | |
80359a9c AC |
79 | static int whiteheat_firmware_download(struct usb_serial *serial, |
80 | const struct usb_device_id *id); | |
81 | static int whiteheat_firmware_attach(struct usb_serial *serial); | |
1da177e4 LT |
82 | |
83 | /* function prototypes for the Connect Tech WhiteHEAT serial converter */ | |
80359a9c | 84 | static int whiteheat_attach(struct usb_serial *serial); |
f9c99bb8 | 85 | static void whiteheat_release(struct usb_serial *serial); |
80359a9c | 86 | static int whiteheat_open(struct tty_struct *tty, |
a509a7e4 | 87 | struct usb_serial_port *port); |
335f8514 | 88 | static void whiteheat_close(struct usb_serial_port *port); |
00a0d0d6 | 89 | static int whiteheat_ioctl(struct tty_struct *tty, |
80359a9c AC |
90 | unsigned int cmd, unsigned long arg); |
91 | static void whiteheat_set_termios(struct tty_struct *tty, | |
92 | struct usb_serial_port *port, struct ktermios *old); | |
60b33c13 | 93 | static int whiteheat_tiocmget(struct tty_struct *tty); |
20b9d177 | 94 | static int whiteheat_tiocmset(struct tty_struct *tty, |
80359a9c AC |
95 | unsigned int set, unsigned int clear); |
96 | static void whiteheat_break_ctl(struct tty_struct *tty, int break_state); | |
1da177e4 | 97 | |
ea65370d | 98 | static struct usb_serial_driver whiteheat_fake_device = { |
18fcac35 GKH |
99 | .driver = { |
100 | .owner = THIS_MODULE, | |
269bda1c | 101 | .name = "whiteheatnofirm", |
18fcac35 | 102 | }, |
269bda1c | 103 | .description = "Connect Tech - WhiteHEAT - (prerenumeration)", |
1da177e4 | 104 | .id_table = id_table_prerenumeration, |
1da177e4 LT |
105 | .num_ports = 1, |
106 | .probe = whiteheat_firmware_download, | |
107 | .attach = whiteheat_firmware_attach, | |
108 | }; | |
109 | ||
ea65370d | 110 | static struct usb_serial_driver whiteheat_device = { |
18fcac35 GKH |
111 | .driver = { |
112 | .owner = THIS_MODULE, | |
269bda1c | 113 | .name = "whiteheat", |
18fcac35 | 114 | }, |
269bda1c | 115 | .description = "Connect Tech - WhiteHEAT", |
1da177e4 | 116 | .id_table = id_table_std, |
1da177e4 LT |
117 | .num_ports = 4, |
118 | .attach = whiteheat_attach, | |
f9c99bb8 | 119 | .release = whiteheat_release, |
1da177e4 LT |
120 | .open = whiteheat_open, |
121 | .close = whiteheat_close, | |
1da177e4 LT |
122 | .ioctl = whiteheat_ioctl, |
123 | .set_termios = whiteheat_set_termios, | |
124 | .break_ctl = whiteheat_break_ctl, | |
125 | .tiocmget = whiteheat_tiocmget, | |
126 | .tiocmset = whiteheat_tiocmset, | |
5c0c7582 JH |
127 | .throttle = usb_serial_generic_throttle, |
128 | .unthrottle = usb_serial_generic_unthrottle, | |
1da177e4 LT |
129 | }; |
130 | ||
29618e9f AS |
131 | static struct usb_serial_driver * const serial_drivers[] = { |
132 | &whiteheat_fake_device, &whiteheat_device, NULL | |
133 | }; | |
1da177e4 LT |
134 | |
135 | struct whiteheat_command_private { | |
08a2b3b6 | 136 | struct mutex mutex; |
1da177e4 LT |
137 | __u8 port_running; |
138 | __u8 command_finished; | |
80359a9c AC |
139 | wait_queue_head_t wait_command; /* for handling sleeping whilst |
140 | waiting for a command to | |
141 | finish */ | |
1da177e4 LT |
142 | __u8 result_buffer[64]; |
143 | }; | |
144 | ||
1da177e4 | 145 | struct whiteheat_private { |
a5b6f60c | 146 | __u8 mcr; /* FIXME: no locking on mcr */ |
1da177e4 LT |
147 | }; |
148 | ||
149 | ||
150 | /* local function prototypes */ | |
151 | static int start_command_port(struct usb_serial *serial); | |
152 | static void stop_command_port(struct usb_serial *serial); | |
7d12e780 DH |
153 | static void command_port_write_callback(struct urb *urb); |
154 | static void command_port_read_callback(struct urb *urb); | |
1da177e4 | 155 | |
80359a9c AC |
156 | static int firm_send_command(struct usb_serial_port *port, __u8 command, |
157 | __u8 *data, __u8 datasize); | |
1da177e4 LT |
158 | static int firm_open(struct usb_serial_port *port); |
159 | static int firm_close(struct usb_serial_port *port); | |
fe1ae7fd | 160 | static void firm_setup_port(struct tty_struct *tty); |
1da177e4 LT |
161 | static int firm_set_rts(struct usb_serial_port *port, __u8 onoff); |
162 | static int firm_set_dtr(struct usb_serial_port *port, __u8 onoff); | |
163 | static int firm_set_break(struct usb_serial_port *port, __u8 onoff); | |
164 | static int firm_purge(struct usb_serial_port *port, __u8 rxtx); | |
165 | static int firm_get_dtr_rts(struct usb_serial_port *port); | |
166 | static int firm_report_tx_done(struct usb_serial_port *port); | |
167 | ||
168 | ||
169 | #define COMMAND_PORT 4 | |
170 | #define COMMAND_TIMEOUT (2*HZ) /* 2 second timeout for a command */ | |
171 | #define COMMAND_TIMEOUT_MS 2000 | |
172 | #define CLOSING_DELAY (30 * HZ) | |
173 | ||
174 | ||
175 | /***************************************************************************** | |
176 | * Connect Tech's White Heat prerenumeration driver functions | |
177 | *****************************************************************************/ | |
178 | ||
179 | /* steps to download the firmware to the WhiteHEAT device: | |
180 | - hold the reset (by writing to the reset bit of the CPUCS register) | |
181 | - download the VEND_AX.HEX file to the chip using VENDOR_REQUEST-ANCHOR_LOAD | |
182 | - release the reset (by writing to the CPUCS register) | |
183 | - download the WH.HEX file for all addresses greater than 0x1b3f using | |
184 | VENDOR_REQUEST-ANCHOR_EXTERNAL_RAM_LOAD | |
185 | - hold the reset | |
186 | - download the WH.HEX file for all addresses less than 0x1b40 using | |
187 | VENDOR_REQUEST_ANCHOR_LOAD | |
188 | - release the reset | |
189 | - device renumerated itself and comes up as new device id with all | |
190 | firmware download completed. | |
191 | */ | |
80359a9c AC |
192 | static int whiteheat_firmware_download(struct usb_serial *serial, |
193 | const struct usb_device_id *id) | |
1da177e4 | 194 | { |
8d733e26 | 195 | int response; |
ec6752f5 | 196 | |
8d733e26 RB |
197 | response = ezusb_fx1_ihex_firmware_download(serial->dev, "whiteheat_loader.fw"); |
198 | if (response >= 0) { | |
199 | response = ezusb_fx1_ihex_firmware_download(serial->dev, "whiteheat.fw"); | |
200 | if (response >= 0) | |
201 | return 0; | |
ec6752f5 | 202 | } |
8d733e26 | 203 | return -ENOENT; |
1da177e4 LT |
204 | } |
205 | ||
206 | ||
80359a9c | 207 | static int whiteheat_firmware_attach(struct usb_serial *serial) |
1da177e4 LT |
208 | { |
209 | /* We want this device to fail to have a driver assigned to it */ | |
210 | return 1; | |
211 | } | |
212 | ||
213 | ||
214 | /***************************************************************************** | |
215 | * Connect Tech's White Heat serial driver functions | |
216 | *****************************************************************************/ | |
80359a9c | 217 | static int whiteheat_attach(struct usb_serial *serial) |
1da177e4 LT |
218 | { |
219 | struct usb_serial_port *command_port; | |
220 | struct whiteheat_command_private *command_info; | |
221 | struct usb_serial_port *port; | |
222 | struct whiteheat_private *info; | |
223 | struct whiteheat_hw_info *hw_info; | |
224 | int pipe; | |
225 | int ret; | |
226 | int alen; | |
227 | __u8 *command; | |
228 | __u8 *result; | |
229 | int i; | |
1da177e4 LT |
230 | |
231 | command_port = serial->port[COMMAND_PORT]; | |
232 | ||
80359a9c AC |
233 | pipe = usb_sndbulkpipe(serial->dev, |
234 | command_port->bulk_out_endpointAddress); | |
1da177e4 LT |
235 | command = kmalloc(2, GFP_KERNEL); |
236 | if (!command) | |
237 | goto no_command_buffer; | |
238 | command[0] = WHITEHEAT_GET_HW_INFO; | |
239 | command[1] = 0; | |
80359a9c | 240 | |
1da177e4 LT |
241 | result = kmalloc(sizeof(*hw_info) + 1, GFP_KERNEL); |
242 | if (!result) | |
243 | goto no_result_buffer; | |
244 | /* | |
245 | * When the module is reloaded the firmware is still there and | |
246 | * the endpoints are still in the usb core unchanged. This is the | |
80359a9c AC |
247 | * unlinking bug in disguise. Same for the call below. |
248 | */ | |
1da177e4 | 249 | usb_clear_halt(serial->dev, pipe); |
80359a9c AC |
250 | ret = usb_bulk_msg(serial->dev, pipe, command, 2, |
251 | &alen, COMMAND_TIMEOUT_MS); | |
1da177e4 | 252 | if (ret) { |
194343d9 GKH |
253 | dev_err(&serial->dev->dev, "%s: Couldn't send command [%d]\n", |
254 | serial->type->description, ret); | |
1da177e4 | 255 | goto no_firmware; |
09fd6bc8 | 256 | } else if (alen != 2) { |
194343d9 GKH |
257 | dev_err(&serial->dev->dev, "%s: Send command incomplete [%d]\n", |
258 | serial->type->description, alen); | |
1da177e4 LT |
259 | goto no_firmware; |
260 | } | |
261 | ||
80359a9c AC |
262 | pipe = usb_rcvbulkpipe(serial->dev, |
263 | command_port->bulk_in_endpointAddress); | |
1da177e4 LT |
264 | /* See the comment on the usb_clear_halt() above */ |
265 | usb_clear_halt(serial->dev, pipe); | |
80359a9c AC |
266 | ret = usb_bulk_msg(serial->dev, pipe, result, |
267 | sizeof(*hw_info) + 1, &alen, COMMAND_TIMEOUT_MS); | |
1da177e4 | 268 | if (ret) { |
194343d9 GKH |
269 | dev_err(&serial->dev->dev, "%s: Couldn't get results [%d]\n", |
270 | serial->type->description, ret); | |
1da177e4 | 271 | goto no_firmware; |
09fd6bc8 | 272 | } else if (alen != sizeof(*hw_info) + 1) { |
194343d9 GKH |
273 | dev_err(&serial->dev->dev, "%s: Get results incomplete [%d]\n", |
274 | serial->type->description, alen); | |
1da177e4 LT |
275 | goto no_firmware; |
276 | } else if (result[0] != command[0]) { | |
194343d9 GKH |
277 | dev_err(&serial->dev->dev, "%s: Command failed [%d]\n", |
278 | serial->type->description, result[0]); | |
1da177e4 LT |
279 | goto no_firmware; |
280 | } | |
281 | ||
282 | hw_info = (struct whiteheat_hw_info *)&result[1]; | |
283 | ||
a6765cba JH |
284 | dev_info(&serial->dev->dev, "%s: Firmware v%d.%02d\n", |
285 | serial->type->description, | |
c197a8db | 286 | hw_info->sw_major_rev, hw_info->sw_minor_rev); |
1da177e4 LT |
287 | |
288 | for (i = 0; i < serial->num_ports; i++) { | |
289 | port = serial->port[i]; | |
290 | ||
5cbded58 | 291 | info = kmalloc(sizeof(struct whiteheat_private), GFP_KERNEL); |
1da177e4 | 292 | if (info == NULL) { |
194343d9 GKH |
293 | dev_err(&port->dev, |
294 | "%s: Out of memory for port structures\n", | |
295 | serial->type->description); | |
1da177e4 LT |
296 | goto no_private; |
297 | } | |
298 | ||
1da177e4 | 299 | info->mcr = 0; |
1da177e4 LT |
300 | |
301 | usb_set_serial_port_data(port, info); | |
302 | } | |
303 | ||
80359a9c AC |
304 | command_info = kmalloc(sizeof(struct whiteheat_command_private), |
305 | GFP_KERNEL); | |
1da177e4 | 306 | if (command_info == NULL) { |
194343d9 GKH |
307 | dev_err(&serial->dev->dev, |
308 | "%s: Out of memory for port structures\n", | |
309 | serial->type->description); | |
1da177e4 LT |
310 | goto no_command_private; |
311 | } | |
312 | ||
08a2b3b6 | 313 | mutex_init(&command_info->mutex); |
1da177e4 LT |
314 | command_info->port_running = 0; |
315 | init_waitqueue_head(&command_info->wait_command); | |
316 | usb_set_serial_port_data(command_port, command_info); | |
317 | command_port->write_urb->complete = command_port_write_callback; | |
318 | command_port->read_urb->complete = command_port_read_callback; | |
319 | kfree(result); | |
320 | kfree(command); | |
321 | ||
322 | return 0; | |
323 | ||
324 | no_firmware: | |
325 | /* Firmware likely not running */ | |
194343d9 GKH |
326 | dev_err(&serial->dev->dev, |
327 | "%s: Unable to retrieve firmware version, try replugging\n", | |
328 | serial->type->description); | |
329 | dev_err(&serial->dev->dev, | |
330 | "%s: If the firmware is not running (status led not blinking)\n", | |
331 | serial->type->description); | |
332 | dev_err(&serial->dev->dev, | |
333 | "%s: please contact support@connecttech.com\n", | |
334 | serial->type->description); | |
67ca0284 | 335 | kfree(result); |
c129197c | 336 | kfree(command); |
1da177e4 LT |
337 | return -ENODEV; |
338 | ||
339 | no_command_private: | |
340 | for (i = serial->num_ports - 1; i >= 0; i--) { | |
341 | port = serial->port[i]; | |
342 | info = usb_get_serial_port_data(port); | |
1da177e4 LT |
343 | kfree(info); |
344 | no_private: | |
345 | ; | |
346 | } | |
347 | kfree(result); | |
348 | no_result_buffer: | |
349 | kfree(command); | |
350 | no_command_buffer: | |
351 | return -ENOMEM; | |
352 | } | |
353 | ||
354 | ||
f9c99bb8 | 355 | static void whiteheat_release(struct usb_serial *serial) |
1da177e4 LT |
356 | { |
357 | struct usb_serial_port *command_port; | |
1da177e4 | 358 | struct whiteheat_private *info; |
1da177e4 LT |
359 | int i; |
360 | ||
1da177e4 LT |
361 | /* free up our private data for our command port */ |
362 | command_port = serial->port[COMMAND_PORT]; | |
80359a9c | 363 | kfree(usb_get_serial_port_data(command_port)); |
1da177e4 LT |
364 | |
365 | for (i = 0; i < serial->num_ports; i++) { | |
5c0c7582 | 366 | info = usb_get_serial_port_data(serial->port[i]); |
1da177e4 LT |
367 | kfree(info); |
368 | } | |
1da177e4 LT |
369 | } |
370 | ||
a509a7e4 | 371 | static int whiteheat_open(struct tty_struct *tty, struct usb_serial_port *port) |
1da177e4 | 372 | { |
5c0c7582 | 373 | int retval; |
1da177e4 | 374 | |
1da177e4 LT |
375 | retval = start_command_port(port->serial); |
376 | if (retval) | |
377 | goto exit; | |
378 | ||
1da177e4 LT |
379 | /* send an open port command */ |
380 | retval = firm_open(port); | |
381 | if (retval) { | |
382 | stop_command_port(port->serial); | |
383 | goto exit; | |
384 | } | |
385 | ||
386 | retval = firm_purge(port, WHITEHEAT_PURGE_RX | WHITEHEAT_PURGE_TX); | |
387 | if (retval) { | |
388 | firm_close(port); | |
389 | stop_command_port(port->serial); | |
390 | goto exit; | |
391 | } | |
392 | ||
72e27412 AC |
393 | if (tty) |
394 | firm_setup_port(tty); | |
1da177e4 LT |
395 | |
396 | /* Work around HCD bugs */ | |
397 | usb_clear_halt(port->serial->dev, port->read_urb->pipe); | |
398 | usb_clear_halt(port->serial->dev, port->write_urb->pipe); | |
399 | ||
5c0c7582 | 400 | retval = usb_serial_generic_open(tty, port); |
1da177e4 | 401 | if (retval) { |
1da177e4 LT |
402 | firm_close(port); |
403 | stop_command_port(port->serial); | |
404 | goto exit; | |
405 | } | |
1da177e4 | 406 | exit: |
1da177e4 LT |
407 | return retval; |
408 | } | |
409 | ||
410 | ||
335f8514 | 411 | static void whiteheat_close(struct usb_serial_port *port) |
1da177e4 | 412 | { |
1da177e4 | 413 | firm_report_tx_done(port); |
1da177e4 LT |
414 | firm_close(port); |
415 | ||
5c0c7582 | 416 | usb_serial_generic_close(port); |
1da177e4 | 417 | |
5c0c7582 | 418 | stop_command_port(port->serial); |
1da177e4 LT |
419 | } |
420 | ||
60b33c13 | 421 | static int whiteheat_tiocmget(struct tty_struct *tty) |
1da177e4 | 422 | { |
95da310e | 423 | struct usb_serial_port *port = tty->driver_data; |
1da177e4 LT |
424 | struct whiteheat_private *info = usb_get_serial_port_data(port); |
425 | unsigned int modem_signals = 0; | |
426 | ||
1da177e4 LT |
427 | firm_get_dtr_rts(port); |
428 | if (info->mcr & UART_MCR_DTR) | |
429 | modem_signals |= TIOCM_DTR; | |
430 | if (info->mcr & UART_MCR_RTS) | |
431 | modem_signals |= TIOCM_RTS; | |
432 | ||
433 | return modem_signals; | |
434 | } | |
435 | ||
20b9d177 | 436 | static int whiteheat_tiocmset(struct tty_struct *tty, |
1da177e4 LT |
437 | unsigned int set, unsigned int clear) |
438 | { | |
95da310e | 439 | struct usb_serial_port *port = tty->driver_data; |
1da177e4 LT |
440 | struct whiteheat_private *info = usb_get_serial_port_data(port); |
441 | ||
1da177e4 LT |
442 | if (set & TIOCM_RTS) |
443 | info->mcr |= UART_MCR_RTS; | |
444 | if (set & TIOCM_DTR) | |
445 | info->mcr |= UART_MCR_DTR; | |
446 | ||
447 | if (clear & TIOCM_RTS) | |
448 | info->mcr &= ~UART_MCR_RTS; | |
449 | if (clear & TIOCM_DTR) | |
450 | info->mcr &= ~UART_MCR_DTR; | |
451 | ||
452 | firm_set_dtr(port, info->mcr & UART_MCR_DTR); | |
453 | firm_set_rts(port, info->mcr & UART_MCR_RTS); | |
454 | return 0; | |
455 | } | |
456 | ||
457 | ||
00a0d0d6 | 458 | static int whiteheat_ioctl(struct tty_struct *tty, |
80359a9c | 459 | unsigned int cmd, unsigned long arg) |
1da177e4 | 460 | { |
95da310e | 461 | struct usb_serial_port *port = tty->driver_data; |
1da177e4 LT |
462 | struct serial_struct serstruct; |
463 | void __user *user_arg = (void __user *)arg; | |
464 | ||
255b703a | 465 | dev_dbg(&port->dev, "%s - cmd 0x%.4x\n", __func__, cmd); |
1da177e4 LT |
466 | |
467 | switch (cmd) { | |
80359a9c AC |
468 | case TIOCGSERIAL: |
469 | memset(&serstruct, 0, sizeof(serstruct)); | |
470 | serstruct.type = PORT_16654; | |
471 | serstruct.line = port->serial->minor; | |
472 | serstruct.port = port->number; | |
473 | serstruct.flags = ASYNC_SKIP_TEST | ASYNC_AUTO_IRQ; | |
5c0c7582 | 474 | serstruct.xmit_fifo_size = kfifo_size(&port->write_fifo); |
80359a9c AC |
475 | serstruct.custom_divisor = 0; |
476 | serstruct.baud_base = 460800; | |
477 | serstruct.close_delay = CLOSING_DELAY; | |
478 | serstruct.closing_wait = CLOSING_DELAY; | |
479 | ||
480 | if (copy_to_user(user_arg, &serstruct, sizeof(serstruct))) | |
481 | return -EFAULT; | |
482 | break; | |
483 | default: | |
484 | break; | |
1da177e4 LT |
485 | } |
486 | ||
487 | return -ENOIOCTLCMD; | |
488 | } | |
489 | ||
490 | ||
80359a9c AC |
491 | static void whiteheat_set_termios(struct tty_struct *tty, |
492 | struct usb_serial_port *port, struct ktermios *old_termios) | |
1da177e4 | 493 | { |
95da310e | 494 | firm_setup_port(tty); |
1da177e4 LT |
495 | } |
496 | ||
80359a9c AC |
497 | static void whiteheat_break_ctl(struct tty_struct *tty, int break_state) |
498 | { | |
95da310e | 499 | struct usb_serial_port *port = tty->driver_data; |
1da177e4 LT |
500 | firm_set_break(port, break_state); |
501 | } | |
502 | ||
503 | ||
1da177e4 LT |
504 | /***************************************************************************** |
505 | * Connect Tech's White Heat callback routines | |
506 | *****************************************************************************/ | |
08a2b3b6 | 507 | static void command_port_write_callback(struct urb *urb) |
1da177e4 | 508 | { |
05400013 GKH |
509 | int status = urb->status; |
510 | ||
05400013 | 511 | if (status) { |
255b703a | 512 | dev_dbg(&urb->dev->dev, "nonzero urb status: %d\n", status); |
1da177e4 LT |
513 | return; |
514 | } | |
515 | } | |
516 | ||
517 | ||
08a2b3b6 | 518 | static void command_port_read_callback(struct urb *urb) |
1da177e4 | 519 | { |
cdc97792 | 520 | struct usb_serial_port *command_port = urb->context; |
1da177e4 | 521 | struct whiteheat_command_private *command_info; |
05400013 | 522 | int status = urb->status; |
1da177e4 LT |
523 | unsigned char *data = urb->transfer_buffer; |
524 | int result; | |
1da177e4 | 525 | |
08a2b3b6 ON |
526 | command_info = usb_get_serial_port_data(command_port); |
527 | if (!command_info) { | |
255b703a | 528 | dev_dbg(&urb->dev->dev, "%s - command_info is NULL, exiting.\n", __func__); |
08a2b3b6 ON |
529 | return; |
530 | } | |
05400013 | 531 | if (status) { |
255b703a | 532 | dev_dbg(&urb->dev->dev, "%s - nonzero urb status: %d\n", __func__, status); |
05400013 | 533 | if (status != -ENOENT) |
08a2b3b6 ON |
534 | command_info->command_finished = WHITEHEAT_CMD_FAILURE; |
535 | wake_up(&command_info->wait_command); | |
1da177e4 LT |
536 | return; |
537 | } | |
538 | ||
59d33f2f | 539 | usb_serial_debug_data(&command_port->dev, __func__, urb->actual_length, data); |
1da177e4 | 540 | |
1da177e4 LT |
541 | if (data[0] == WHITEHEAT_CMD_COMPLETE) { |
542 | command_info->command_finished = WHITEHEAT_CMD_COMPLETE; | |
08a2b3b6 | 543 | wake_up(&command_info->wait_command); |
1da177e4 LT |
544 | } else if (data[0] == WHITEHEAT_CMD_FAILURE) { |
545 | command_info->command_finished = WHITEHEAT_CMD_FAILURE; | |
08a2b3b6 | 546 | wake_up(&command_info->wait_command); |
1da177e4 | 547 | } else if (data[0] == WHITEHEAT_EVENT) { |
80359a9c AC |
548 | /* These are unsolicited reports from the firmware, hence no |
549 | waiting command to wakeup */ | |
255b703a | 550 | dev_dbg(&urb->dev->dev, "%s - event received\n", __func__); |
1da177e4 | 551 | } else if (data[0] == WHITEHEAT_GET_DTR_RTS) { |
80359a9c AC |
552 | memcpy(command_info->result_buffer, &data[1], |
553 | urb->actual_length - 1); | |
1da177e4 | 554 | command_info->command_finished = WHITEHEAT_CMD_COMPLETE; |
08a2b3b6 | 555 | wake_up(&command_info->wait_command); |
80359a9c | 556 | } else |
255b703a | 557 | dev_dbg(&urb->dev->dev, "%s - bad reply from firmware\n", __func__); |
80359a9c | 558 | |
1da177e4 | 559 | /* Continue trying to always read */ |
1da177e4 | 560 | result = usb_submit_urb(command_port->read_urb, GFP_ATOMIC); |
1da177e4 | 561 | if (result) |
255b703a | 562 | dev_dbg(&urb->dev->dev, "%s - failed resubmitting read urb, error %d\n", |
80359a9c | 563 | __func__, result); |
1da177e4 LT |
564 | } |
565 | ||
566 | ||
1da177e4 LT |
567 | /***************************************************************************** |
568 | * Connect Tech's White Heat firmware interface | |
569 | *****************************************************************************/ | |
80359a9c AC |
570 | static int firm_send_command(struct usb_serial_port *port, __u8 command, |
571 | __u8 *data, __u8 datasize) | |
1da177e4 LT |
572 | { |
573 | struct usb_serial_port *command_port; | |
574 | struct whiteheat_command_private *command_info; | |
575 | struct whiteheat_private *info; | |
255b703a | 576 | struct device *dev = &port->dev; |
1da177e4 LT |
577 | __u8 *transfer_buffer; |
578 | int retval = 0; | |
08a2b3b6 | 579 | int t; |
1da177e4 | 580 | |
255b703a | 581 | dev_dbg(dev, "%s - command %d\n", __func__, command); |
1da177e4 LT |
582 | |
583 | command_port = port->serial->port[COMMAND_PORT]; | |
584 | command_info = usb_get_serial_port_data(command_port); | |
08a2b3b6 | 585 | mutex_lock(&command_info->mutex); |
38c3cb5b | 586 | command_info->command_finished = false; |
80359a9c | 587 | |
1da177e4 LT |
588 | transfer_buffer = (__u8 *)command_port->write_urb->transfer_buffer; |
589 | transfer_buffer[0] = command; | |
80359a9c | 590 | memcpy(&transfer_buffer[1], data, datasize); |
1da177e4 | 591 | command_port->write_urb->transfer_buffer_length = datasize + 1; |
80359a9c | 592 | retval = usb_submit_urb(command_port->write_urb, GFP_NOIO); |
1da177e4 | 593 | if (retval) { |
255b703a | 594 | dev_dbg(dev, "%s - submit urb failed\n", __func__); |
1da177e4 LT |
595 | goto exit; |
596 | } | |
1da177e4 LT |
597 | |
598 | /* wait for the command to complete */ | |
08a2b3b6 | 599 | t = wait_event_timeout(command_info->wait_command, |
38c3cb5b | 600 | (bool)command_info->command_finished, COMMAND_TIMEOUT); |
08a2b3b6 ON |
601 | if (!t) |
602 | usb_kill_urb(command_port->write_urb); | |
1da177e4 | 603 | |
38c3cb5b | 604 | if (command_info->command_finished == false) { |
255b703a | 605 | dev_dbg(dev, "%s - command timed out.\n", __func__); |
1da177e4 LT |
606 | retval = -ETIMEDOUT; |
607 | goto exit; | |
608 | } | |
609 | ||
610 | if (command_info->command_finished == WHITEHEAT_CMD_FAILURE) { | |
255b703a | 611 | dev_dbg(dev, "%s - command failed.\n", __func__); |
1da177e4 LT |
612 | retval = -EIO; |
613 | goto exit; | |
614 | } | |
615 | ||
616 | if (command_info->command_finished == WHITEHEAT_CMD_COMPLETE) { | |
255b703a | 617 | dev_dbg(dev, "%s - command completed.\n", __func__); |
1da177e4 | 618 | switch (command) { |
80359a9c AC |
619 | case WHITEHEAT_GET_DTR_RTS: |
620 | info = usb_get_serial_port_data(port); | |
621 | memcpy(&info->mcr, command_info->result_buffer, | |
622 | sizeof(struct whiteheat_dr_info)); | |
1da177e4 LT |
623 | break; |
624 | } | |
625 | } | |
1da177e4 | 626 | exit: |
08a2b3b6 | 627 | mutex_unlock(&command_info->mutex); |
1da177e4 LT |
628 | return retval; |
629 | } | |
630 | ||
631 | ||
80359a9c AC |
632 | static int firm_open(struct usb_serial_port *port) |
633 | { | |
1da177e4 LT |
634 | struct whiteheat_simple open_command; |
635 | ||
636 | open_command.port = port->number - port->serial->minor + 1; | |
80359a9c AC |
637 | return firm_send_command(port, WHITEHEAT_OPEN, |
638 | (__u8 *)&open_command, sizeof(open_command)); | |
1da177e4 LT |
639 | } |
640 | ||
641 | ||
80359a9c AC |
642 | static int firm_close(struct usb_serial_port *port) |
643 | { | |
1da177e4 LT |
644 | struct whiteheat_simple close_command; |
645 | ||
646 | close_command.port = port->number - port->serial->minor + 1; | |
80359a9c AC |
647 | return firm_send_command(port, WHITEHEAT_CLOSE, |
648 | (__u8 *)&close_command, sizeof(close_command)); | |
1da177e4 LT |
649 | } |
650 | ||
651 | ||
fe1ae7fd | 652 | static void firm_setup_port(struct tty_struct *tty) |
80359a9c | 653 | { |
95da310e | 654 | struct usb_serial_port *port = tty->driver_data; |
255b703a | 655 | struct device *dev = &port->dev; |
1da177e4 | 656 | struct whiteheat_port_settings port_settings; |
adc8d746 | 657 | unsigned int cflag = tty->termios.c_cflag; |
1da177e4 LT |
658 | |
659 | port_settings.port = port->number + 1; | |
660 | ||
661 | /* get the byte size */ | |
662 | switch (cflag & CSIZE) { | |
80359a9c AC |
663 | case CS5: port_settings.bits = 5; break; |
664 | case CS6: port_settings.bits = 6; break; | |
665 | case CS7: port_settings.bits = 7; break; | |
666 | default: | |
667 | case CS8: port_settings.bits = 8; break; | |
1da177e4 | 668 | } |
255b703a | 669 | dev_dbg(dev, "%s - data bits = %d\n", __func__, port_settings.bits); |
80359a9c | 670 | |
1da177e4 LT |
671 | /* determine the parity */ |
672 | if (cflag & PARENB) | |
673 | if (cflag & CMSPAR) | |
674 | if (cflag & PARODD) | |
675 | port_settings.parity = WHITEHEAT_PAR_MARK; | |
676 | else | |
677 | port_settings.parity = WHITEHEAT_PAR_SPACE; | |
678 | else | |
679 | if (cflag & PARODD) | |
680 | port_settings.parity = WHITEHEAT_PAR_ODD; | |
681 | else | |
682 | port_settings.parity = WHITEHEAT_PAR_EVEN; | |
683 | else | |
684 | port_settings.parity = WHITEHEAT_PAR_NONE; | |
255b703a | 685 | dev_dbg(dev, "%s - parity = %c\n", __func__, port_settings.parity); |
1da177e4 LT |
686 | |
687 | /* figure out the stop bits requested */ | |
688 | if (cflag & CSTOPB) | |
689 | port_settings.stop = 2; | |
690 | else | |
691 | port_settings.stop = 1; | |
255b703a | 692 | dev_dbg(dev, "%s - stop bits = %d\n", __func__, port_settings.stop); |
1da177e4 LT |
693 | |
694 | /* figure out the flow control settings */ | |
695 | if (cflag & CRTSCTS) | |
80359a9c AC |
696 | port_settings.hflow = (WHITEHEAT_HFLOW_CTS | |
697 | WHITEHEAT_HFLOW_RTS); | |
1da177e4 LT |
698 | else |
699 | port_settings.hflow = WHITEHEAT_HFLOW_NONE; | |
255b703a | 700 | dev_dbg(dev, "%s - hardware flow control = %s %s %s %s\n", __func__, |
1da177e4 LT |
701 | (port_settings.hflow & WHITEHEAT_HFLOW_CTS) ? "CTS" : "", |
702 | (port_settings.hflow & WHITEHEAT_HFLOW_RTS) ? "RTS" : "", | |
703 | (port_settings.hflow & WHITEHEAT_HFLOW_DSR) ? "DSR" : "", | |
704 | (port_settings.hflow & WHITEHEAT_HFLOW_DTR) ? "DTR" : ""); | |
80359a9c | 705 | |
1da177e4 | 706 | /* determine software flow control */ |
95da310e | 707 | if (I_IXOFF(tty)) |
1da177e4 LT |
708 | port_settings.sflow = WHITEHEAT_SFLOW_RXTX; |
709 | else | |
710 | port_settings.sflow = WHITEHEAT_SFLOW_NONE; | |
255b703a | 711 | dev_dbg(dev, "%s - software flow control = %c\n", __func__, port_settings.sflow); |
80359a9c | 712 | |
95da310e AC |
713 | port_settings.xon = START_CHAR(tty); |
714 | port_settings.xoff = STOP_CHAR(tty); | |
255b703a | 715 | dev_dbg(dev, "%s - XON = %2x, XOFF = %2x\n", __func__, port_settings.xon, port_settings.xoff); |
1da177e4 LT |
716 | |
717 | /* get the baud rate wanted */ | |
95da310e | 718 | port_settings.baud = tty_get_baud_rate(tty); |
255b703a | 719 | dev_dbg(dev, "%s - baud rate = %d\n", __func__, port_settings.baud); |
1da177e4 | 720 | |
01d1df29 | 721 | /* fixme: should set validated settings */ |
95da310e | 722 | tty_encode_baud_rate(tty, port_settings.baud, port_settings.baud); |
1da177e4 LT |
723 | /* handle any settings that aren't specified in the tty structure */ |
724 | port_settings.lloop = 0; | |
80359a9c | 725 | |
1da177e4 | 726 | /* now send the message to the device */ |
fe1ae7fd | 727 | firm_send_command(port, WHITEHEAT_SETUP_PORT, |
80359a9c | 728 | (__u8 *)&port_settings, sizeof(port_settings)); |
1da177e4 LT |
729 | } |
730 | ||
731 | ||
80359a9c AC |
732 | static int firm_set_rts(struct usb_serial_port *port, __u8 onoff) |
733 | { | |
1da177e4 LT |
734 | struct whiteheat_set_rdb rts_command; |
735 | ||
736 | rts_command.port = port->number - port->serial->minor + 1; | |
737 | rts_command.state = onoff; | |
80359a9c AC |
738 | return firm_send_command(port, WHITEHEAT_SET_RTS, |
739 | (__u8 *)&rts_command, sizeof(rts_command)); | |
1da177e4 LT |
740 | } |
741 | ||
742 | ||
80359a9c AC |
743 | static int firm_set_dtr(struct usb_serial_port *port, __u8 onoff) |
744 | { | |
1da177e4 LT |
745 | struct whiteheat_set_rdb dtr_command; |
746 | ||
747 | dtr_command.port = port->number - port->serial->minor + 1; | |
748 | dtr_command.state = onoff; | |
72e27412 | 749 | return firm_send_command(port, WHITEHEAT_SET_DTR, |
80359a9c | 750 | (__u8 *)&dtr_command, sizeof(dtr_command)); |
1da177e4 LT |
751 | } |
752 | ||
753 | ||
80359a9c AC |
754 | static int firm_set_break(struct usb_serial_port *port, __u8 onoff) |
755 | { | |
1da177e4 LT |
756 | struct whiteheat_set_rdb break_command; |
757 | ||
758 | break_command.port = port->number - port->serial->minor + 1; | |
759 | break_command.state = onoff; | |
72e27412 | 760 | return firm_send_command(port, WHITEHEAT_SET_BREAK, |
80359a9c | 761 | (__u8 *)&break_command, sizeof(break_command)); |
1da177e4 LT |
762 | } |
763 | ||
764 | ||
80359a9c AC |
765 | static int firm_purge(struct usb_serial_port *port, __u8 rxtx) |
766 | { | |
1da177e4 LT |
767 | struct whiteheat_purge purge_command; |
768 | ||
769 | purge_command.port = port->number - port->serial->minor + 1; | |
770 | purge_command.what = rxtx; | |
80359a9c AC |
771 | return firm_send_command(port, WHITEHEAT_PURGE, |
772 | (__u8 *)&purge_command, sizeof(purge_command)); | |
1da177e4 LT |
773 | } |
774 | ||
775 | ||
80359a9c AC |
776 | static int firm_get_dtr_rts(struct usb_serial_port *port) |
777 | { | |
1da177e4 LT |
778 | struct whiteheat_simple get_dr_command; |
779 | ||
780 | get_dr_command.port = port->number - port->serial->minor + 1; | |
80359a9c AC |
781 | return firm_send_command(port, WHITEHEAT_GET_DTR_RTS, |
782 | (__u8 *)&get_dr_command, sizeof(get_dr_command)); | |
1da177e4 LT |
783 | } |
784 | ||
785 | ||
80359a9c AC |
786 | static int firm_report_tx_done(struct usb_serial_port *port) |
787 | { | |
1da177e4 LT |
788 | struct whiteheat_simple close_command; |
789 | ||
790 | close_command.port = port->number - port->serial->minor + 1; | |
80359a9c AC |
791 | return firm_send_command(port, WHITEHEAT_REPORT_TX_DONE, |
792 | (__u8 *)&close_command, sizeof(close_command)); | |
1da177e4 LT |
793 | } |
794 | ||
795 | ||
796 | /***************************************************************************** | |
797 | * Connect Tech's White Heat utility functions | |
798 | *****************************************************************************/ | |
799 | static int start_command_port(struct usb_serial *serial) | |
800 | { | |
801 | struct usb_serial_port *command_port; | |
802 | struct whiteheat_command_private *command_info; | |
1da177e4 | 803 | int retval = 0; |
80359a9c | 804 | |
1da177e4 LT |
805 | command_port = serial->port[COMMAND_PORT]; |
806 | command_info = usb_get_serial_port_data(command_port); | |
08a2b3b6 | 807 | mutex_lock(&command_info->mutex); |
1da177e4 LT |
808 | if (!command_info->port_running) { |
809 | /* Work around HCD bugs */ | |
810 | usb_clear_halt(serial->dev, command_port->read_urb->pipe); | |
811 | ||
1da177e4 LT |
812 | retval = usb_submit_urb(command_port->read_urb, GFP_KERNEL); |
813 | if (retval) { | |
194343d9 GKH |
814 | dev_err(&serial->dev->dev, |
815 | "%s - failed submitting read urb, error %d\n", | |
816 | __func__, retval); | |
1da177e4 LT |
817 | goto exit; |
818 | } | |
819 | } | |
820 | command_info->port_running++; | |
821 | ||
822 | exit: | |
08a2b3b6 | 823 | mutex_unlock(&command_info->mutex); |
1da177e4 LT |
824 | return retval; |
825 | } | |
826 | ||
827 | ||
828 | static void stop_command_port(struct usb_serial *serial) | |
829 | { | |
830 | struct usb_serial_port *command_port; | |
831 | struct whiteheat_command_private *command_info; | |
1da177e4 LT |
832 | |
833 | command_port = serial->port[COMMAND_PORT]; | |
834 | command_info = usb_get_serial_port_data(command_port); | |
08a2b3b6 | 835 | mutex_lock(&command_info->mutex); |
1da177e4 LT |
836 | command_info->port_running--; |
837 | if (!command_info->port_running) | |
838 | usb_kill_urb(command_port->read_urb); | |
08a2b3b6 | 839 | mutex_unlock(&command_info->mutex); |
1da177e4 LT |
840 | } |
841 | ||
68e24113 | 842 | module_usb_serial_driver(serial_drivers, id_table_combined); |
1da177e4 | 843 | |
80359a9c AC |
844 | MODULE_AUTHOR(DRIVER_AUTHOR); |
845 | MODULE_DESCRIPTION(DRIVER_DESC); | |
1da177e4 LT |
846 | MODULE_LICENSE("GPL"); |
847 | ||
ec6752f5 DW |
848 | MODULE_FIRMWARE("whiteheat.fw"); |
849 | MODULE_FIRMWARE("whiteheat_loader.fw"); |