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 | * | |
15 | * See Documentation/usb/usb-serial.txt for more information on using this driver | |
16 | * | |
17 | * (10/09/2002) Stuart MacDonald (stuartm@connecttech.com) | |
18 | * Upgrade to full working driver | |
19 | * | |
20 | * (05/30/2001) gkh | |
21 | * switched from using spinlock to a semaphore, which fixes lots of problems. | |
22 | * | |
23 | * (04/08/2001) gb | |
24 | * Identify version on module load. | |
25 | * | |
26 | * 2001_Mar_19 gkh | |
27 | * Fixed MOD_INC and MOD_DEC logic, the ability to open a port more | |
28 | * than once, and the got the proper usb_device_id table entries so | |
29 | * the driver works again. | |
30 | * | |
31 | * (11/01/2000) Adam J. Richter | |
32 | * usb_device_id table support | |
33 | * | |
34 | * (10/05/2000) gkh | |
35 | * Fixed bug with urb->dev not being set properly, now that the usb | |
36 | * core needs it. | |
37 | * | |
38 | * (10/03/2000) smd | |
39 | * firmware is improved to guard against crap sent to device | |
40 | * firmware now replies CMD_FAILURE on bad things | |
41 | * read_callback fix you provided for private info struct | |
42 | * command_finished now indicates success or fail | |
43 | * setup_port struct now packed to avoid gcc padding | |
44 | * firmware uses 1 based port numbering, driver now handles that | |
45 | * | |
46 | * (09/11/2000) gkh | |
47 | * Removed DEBUG #ifdefs with call to usb_serial_debug_data | |
48 | * | |
49 | * (07/19/2000) gkh | |
50 | * Added module_init and module_exit functions to handle the fact that this | |
51 | * driver is a loadable module now. | |
52 | * Fixed bug with port->minor that was found by Al Borchers | |
53 | * | |
54 | * (07/04/2000) gkh | |
55 | * Added support for port settings. Baud rate can now be changed. Line signals | |
56 | * are not transferred to and from the tty layer yet, but things seem to be | |
57 | * working well now. | |
58 | * | |
59 | * (05/04/2000) gkh | |
60 | * First cut at open and close commands. Data can flow through the ports at | |
61 | * default speeds now. | |
62 | * | |
63 | * (03/26/2000) gkh | |
64 | * Split driver up into device specific pieces. | |
65 | * | |
66 | */ | |
67 | ||
1da177e4 LT |
68 | #include <linux/kernel.h> |
69 | #include <linux/errno.h> | |
70 | #include <linux/init.h> | |
71 | #include <linux/slab.h> | |
72 | #include <linux/tty.h> | |
73 | #include <linux/tty_driver.h> | |
74 | #include <linux/tty_flip.h> | |
75 | #include <linux/module.h> | |
76 | #include <linux/spinlock.h> | |
77 | #include <asm/uaccess.h> | |
78 | #include <asm/termbits.h> | |
79 | #include <linux/usb.h> | |
80 | #include <linux/serial_reg.h> | |
81 | #include <linux/serial.h> | |
a969888c | 82 | #include <linux/usb/serial.h> |
1da177e4 LT |
83 | #include "whiteheat_fw.h" /* firmware for the ConnectTech WhiteHEAT device */ |
84 | #include "whiteheat.h" /* WhiteHEAT specific commands */ | |
85 | ||
86 | static int debug; | |
87 | ||
88 | #ifndef CMSPAR | |
89 | #define CMSPAR 0 | |
90 | #endif | |
91 | ||
92 | /* | |
93 | * Version Information | |
94 | */ | |
95 | #define DRIVER_VERSION "v2.0" | |
96 | #define DRIVER_AUTHOR "Greg Kroah-Hartman <greg@kroah.com>, Stuart MacDonald <stuartm@connecttech.com>" | |
97 | #define DRIVER_DESC "USB ConnectTech WhiteHEAT driver" | |
98 | ||
99 | #define CONNECT_TECH_VENDOR_ID 0x0710 | |
100 | #define CONNECT_TECH_FAKE_WHITE_HEAT_ID 0x0001 | |
101 | #define CONNECT_TECH_WHITE_HEAT_ID 0x8001 | |
102 | ||
103 | /* | |
104 | ID tables for whiteheat are unusual, because we want to different | |
105 | things for different versions of the device. Eventually, this | |
106 | will be doable from a single table. But, for now, we define two | |
107 | separate ID tables, and then a third table that combines them | |
108 | just for the purpose of exporting the autoloading information. | |
109 | */ | |
110 | static struct usb_device_id id_table_std [] = { | |
111 | { USB_DEVICE(CONNECT_TECH_VENDOR_ID, CONNECT_TECH_WHITE_HEAT_ID) }, | |
112 | { } /* Terminating entry */ | |
113 | }; | |
114 | ||
115 | static struct usb_device_id id_table_prerenumeration [] = { | |
116 | { USB_DEVICE(CONNECT_TECH_VENDOR_ID, CONNECT_TECH_FAKE_WHITE_HEAT_ID) }, | |
117 | { } /* Terminating entry */ | |
118 | }; | |
119 | ||
120 | static struct usb_device_id id_table_combined [] = { | |
121 | { USB_DEVICE(CONNECT_TECH_VENDOR_ID, CONNECT_TECH_WHITE_HEAT_ID) }, | |
122 | { USB_DEVICE(CONNECT_TECH_VENDOR_ID, CONNECT_TECH_FAKE_WHITE_HEAT_ID) }, | |
123 | { } /* Terminating entry */ | |
124 | }; | |
125 | ||
126 | MODULE_DEVICE_TABLE (usb, id_table_combined); | |
127 | ||
128 | static struct usb_driver whiteheat_driver = { | |
1da177e4 LT |
129 | .name = "whiteheat", |
130 | .probe = usb_serial_probe, | |
131 | .disconnect = usb_serial_disconnect, | |
132 | .id_table = id_table_combined, | |
ba9dc657 | 133 | .no_dynamic_id = 1, |
1da177e4 LT |
134 | }; |
135 | ||
136 | /* function prototypes for the Connect Tech WhiteHEAT prerenumeration device */ | |
137 | static int whiteheat_firmware_download (struct usb_serial *serial, const struct usb_device_id *id); | |
138 | static int whiteheat_firmware_attach (struct usb_serial *serial); | |
139 | ||
140 | /* function prototypes for the Connect Tech WhiteHEAT serial converter */ | |
141 | static int whiteheat_attach (struct usb_serial *serial); | |
142 | static void whiteheat_shutdown (struct usb_serial *serial); | |
143 | static int whiteheat_open (struct usb_serial_port *port, struct file *filp); | |
144 | static void whiteheat_close (struct usb_serial_port *port, struct file *filp); | |
145 | static int whiteheat_write (struct usb_serial_port *port, const unsigned char *buf, int count); | |
146 | static int whiteheat_write_room (struct usb_serial_port *port); | |
147 | static int whiteheat_ioctl (struct usb_serial_port *port, struct file * file, unsigned int cmd, unsigned long arg); | |
606d099c | 148 | static void whiteheat_set_termios (struct usb_serial_port *port, struct ktermios * old); |
1da177e4 LT |
149 | static int whiteheat_tiocmget (struct usb_serial_port *port, struct file *file); |
150 | static int whiteheat_tiocmset (struct usb_serial_port *port, struct file *file, unsigned int set, unsigned int clear); | |
151 | static void whiteheat_break_ctl (struct usb_serial_port *port, int break_state); | |
152 | static int whiteheat_chars_in_buffer (struct usb_serial_port *port); | |
153 | static void whiteheat_throttle (struct usb_serial_port *port); | |
154 | static void whiteheat_unthrottle (struct usb_serial_port *port); | |
7d12e780 DH |
155 | static void whiteheat_read_callback (struct urb *urb); |
156 | static void whiteheat_write_callback (struct urb *urb); | |
1da177e4 | 157 | |
ea65370d | 158 | static struct usb_serial_driver whiteheat_fake_device = { |
18fcac35 GKH |
159 | .driver = { |
160 | .owner = THIS_MODULE, | |
269bda1c | 161 | .name = "whiteheatnofirm", |
18fcac35 | 162 | }, |
269bda1c | 163 | .description = "Connect Tech - WhiteHEAT - (prerenumeration)", |
1da177e4 LT |
164 | .id_table = id_table_prerenumeration, |
165 | .num_interrupt_in = NUM_DONT_CARE, | |
166 | .num_bulk_in = NUM_DONT_CARE, | |
167 | .num_bulk_out = NUM_DONT_CARE, | |
168 | .num_ports = 1, | |
169 | .probe = whiteheat_firmware_download, | |
170 | .attach = whiteheat_firmware_attach, | |
171 | }; | |
172 | ||
ea65370d | 173 | static struct usb_serial_driver whiteheat_device = { |
18fcac35 GKH |
174 | .driver = { |
175 | .owner = THIS_MODULE, | |
269bda1c | 176 | .name = "whiteheat", |
18fcac35 | 177 | }, |
269bda1c | 178 | .description = "Connect Tech - WhiteHEAT", |
1da177e4 LT |
179 | .id_table = id_table_std, |
180 | .num_interrupt_in = NUM_DONT_CARE, | |
181 | .num_bulk_in = NUM_DONT_CARE, | |
182 | .num_bulk_out = NUM_DONT_CARE, | |
183 | .num_ports = 4, | |
184 | .attach = whiteheat_attach, | |
185 | .shutdown = whiteheat_shutdown, | |
186 | .open = whiteheat_open, | |
187 | .close = whiteheat_close, | |
188 | .write = whiteheat_write, | |
189 | .write_room = whiteheat_write_room, | |
190 | .ioctl = whiteheat_ioctl, | |
191 | .set_termios = whiteheat_set_termios, | |
192 | .break_ctl = whiteheat_break_ctl, | |
193 | .tiocmget = whiteheat_tiocmget, | |
194 | .tiocmset = whiteheat_tiocmset, | |
195 | .chars_in_buffer = whiteheat_chars_in_buffer, | |
196 | .throttle = whiteheat_throttle, | |
197 | .unthrottle = whiteheat_unthrottle, | |
198 | .read_bulk_callback = whiteheat_read_callback, | |
199 | .write_bulk_callback = whiteheat_write_callback, | |
200 | }; | |
201 | ||
202 | ||
203 | struct whiteheat_command_private { | |
204 | spinlock_t lock; | |
205 | __u8 port_running; | |
206 | __u8 command_finished; | |
207 | wait_queue_head_t wait_command; /* for handling sleeping while waiting for a command to finish */ | |
208 | __u8 result_buffer[64]; | |
209 | }; | |
210 | ||
211 | ||
212 | #define THROTTLED 0x01 | |
213 | #define ACTUALLY_THROTTLED 0x02 | |
214 | ||
215 | static int urb_pool_size = 8; | |
216 | ||
217 | struct whiteheat_urb_wrap { | |
218 | struct list_head list; | |
219 | struct urb *urb; | |
220 | }; | |
221 | ||
222 | struct whiteheat_private { | |
223 | spinlock_t lock; | |
224 | __u8 flags; | |
225 | __u8 mcr; | |
226 | struct list_head rx_urbs_free; | |
227 | struct list_head rx_urbs_submitted; | |
228 | struct list_head rx_urb_q; | |
229 | struct work_struct rx_work; | |
c4028958 | 230 | struct usb_serial_port *port; |
1da177e4 LT |
231 | struct list_head tx_urbs_free; |
232 | struct list_head tx_urbs_submitted; | |
233 | }; | |
234 | ||
235 | ||
236 | /* local function prototypes */ | |
237 | static int start_command_port(struct usb_serial *serial); | |
238 | static void stop_command_port(struct usb_serial *serial); | |
7d12e780 DH |
239 | static void command_port_write_callback(struct urb *urb); |
240 | static void command_port_read_callback(struct urb *urb); | |
1da177e4 LT |
241 | |
242 | static int start_port_read(struct usb_serial_port *port); | |
243 | static struct whiteheat_urb_wrap *urb_to_wrap(struct urb *urb, struct list_head *head); | |
244 | static struct list_head *list_first(struct list_head *head); | |
c4028958 | 245 | static void rx_data_softint(struct work_struct *work); |
1da177e4 LT |
246 | |
247 | static int firm_send_command(struct usb_serial_port *port, __u8 command, __u8 *data, __u8 datasize); | |
248 | static int firm_open(struct usb_serial_port *port); | |
249 | static int firm_close(struct usb_serial_port *port); | |
250 | static int firm_setup_port(struct usb_serial_port *port); | |
251 | static int firm_set_rts(struct usb_serial_port *port, __u8 onoff); | |
252 | static int firm_set_dtr(struct usb_serial_port *port, __u8 onoff); | |
253 | static int firm_set_break(struct usb_serial_port *port, __u8 onoff); | |
254 | static int firm_purge(struct usb_serial_port *port, __u8 rxtx); | |
255 | static int firm_get_dtr_rts(struct usb_serial_port *port); | |
256 | static int firm_report_tx_done(struct usb_serial_port *port); | |
257 | ||
258 | ||
259 | #define COMMAND_PORT 4 | |
260 | #define COMMAND_TIMEOUT (2*HZ) /* 2 second timeout for a command */ | |
261 | #define COMMAND_TIMEOUT_MS 2000 | |
262 | #define CLOSING_DELAY (30 * HZ) | |
263 | ||
264 | ||
265 | /***************************************************************************** | |
266 | * Connect Tech's White Heat prerenumeration driver functions | |
267 | *****************************************************************************/ | |
268 | ||
269 | /* steps to download the firmware to the WhiteHEAT device: | |
270 | - hold the reset (by writing to the reset bit of the CPUCS register) | |
271 | - download the VEND_AX.HEX file to the chip using VENDOR_REQUEST-ANCHOR_LOAD | |
272 | - release the reset (by writing to the CPUCS register) | |
273 | - download the WH.HEX file for all addresses greater than 0x1b3f using | |
274 | VENDOR_REQUEST-ANCHOR_EXTERNAL_RAM_LOAD | |
275 | - hold the reset | |
276 | - download the WH.HEX file for all addresses less than 0x1b40 using | |
277 | VENDOR_REQUEST_ANCHOR_LOAD | |
278 | - release the reset | |
279 | - device renumerated itself and comes up as new device id with all | |
280 | firmware download completed. | |
281 | */ | |
282 | static int whiteheat_firmware_download (struct usb_serial *serial, const struct usb_device_id *id) | |
283 | { | |
284 | int response; | |
285 | const struct whiteheat_hex_record *record; | |
286 | ||
287 | dbg("%s", __FUNCTION__); | |
288 | ||
289 | response = ezusb_set_reset (serial, 1); | |
290 | ||
291 | record = &whiteheat_loader[0]; | |
292 | while (record->address != 0xffff) { | |
293 | response = ezusb_writememory (serial, record->address, | |
294 | (unsigned char *)record->data, record->data_size, 0xa0); | |
295 | if (response < 0) { | |
296 | err("%s - ezusb_writememory failed for loader (%d %04X %p %d)", | |
297 | __FUNCTION__, response, record->address, record->data, record->data_size); | |
298 | break; | |
299 | } | |
300 | ++record; | |
301 | } | |
302 | ||
303 | response = ezusb_set_reset (serial, 0); | |
304 | ||
305 | record = &whiteheat_firmware[0]; | |
306 | while (record->address < 0x1b40) { | |
307 | ++record; | |
308 | } | |
309 | while (record->address != 0xffff) { | |
310 | response = ezusb_writememory (serial, record->address, | |
311 | (unsigned char *)record->data, record->data_size, 0xa3); | |
312 | if (response < 0) { | |
313 | err("%s - ezusb_writememory failed for first firmware step (%d %04X %p %d)", | |
314 | __FUNCTION__, response, record->address, record->data, record->data_size); | |
315 | break; | |
316 | } | |
317 | ++record; | |
318 | } | |
319 | ||
320 | response = ezusb_set_reset (serial, 1); | |
321 | ||
322 | record = &whiteheat_firmware[0]; | |
323 | while (record->address < 0x1b40) { | |
324 | response = ezusb_writememory (serial, record->address, | |
325 | (unsigned char *)record->data, record->data_size, 0xa0); | |
326 | if (response < 0) { | |
327 | err("%s - ezusb_writememory failed for second firmware step (%d %04X %p %d)", | |
328 | __FUNCTION__, response, record->address, record->data, record->data_size); | |
329 | break; | |
330 | } | |
331 | ++record; | |
332 | } | |
333 | ||
334 | response = ezusb_set_reset (serial, 0); | |
335 | ||
336 | return 0; | |
337 | } | |
338 | ||
339 | ||
340 | static int whiteheat_firmware_attach (struct usb_serial *serial) | |
341 | { | |
342 | /* We want this device to fail to have a driver assigned to it */ | |
343 | return 1; | |
344 | } | |
345 | ||
346 | ||
347 | /***************************************************************************** | |
348 | * Connect Tech's White Heat serial driver functions | |
349 | *****************************************************************************/ | |
350 | static int whiteheat_attach (struct usb_serial *serial) | |
351 | { | |
352 | struct usb_serial_port *command_port; | |
353 | struct whiteheat_command_private *command_info; | |
354 | struct usb_serial_port *port; | |
355 | struct whiteheat_private *info; | |
356 | struct whiteheat_hw_info *hw_info; | |
357 | int pipe; | |
358 | int ret; | |
359 | int alen; | |
360 | __u8 *command; | |
361 | __u8 *result; | |
362 | int i; | |
363 | int j; | |
364 | struct urb *urb; | |
365 | int buf_size; | |
366 | struct whiteheat_urb_wrap *wrap; | |
367 | struct list_head *tmp; | |
368 | ||
369 | command_port = serial->port[COMMAND_PORT]; | |
370 | ||
371 | pipe = usb_sndbulkpipe (serial->dev, command_port->bulk_out_endpointAddress); | |
372 | command = kmalloc(2, GFP_KERNEL); | |
373 | if (!command) | |
374 | goto no_command_buffer; | |
375 | command[0] = WHITEHEAT_GET_HW_INFO; | |
376 | command[1] = 0; | |
377 | ||
378 | result = kmalloc(sizeof(*hw_info) + 1, GFP_KERNEL); | |
379 | if (!result) | |
380 | goto no_result_buffer; | |
381 | /* | |
382 | * When the module is reloaded the firmware is still there and | |
383 | * the endpoints are still in the usb core unchanged. This is the | |
384 | * unlinking bug in disguise. Same for the call below. | |
385 | */ | |
386 | usb_clear_halt(serial->dev, pipe); | |
387 | ret = usb_bulk_msg (serial->dev, pipe, command, 2, &alen, COMMAND_TIMEOUT_MS); | |
388 | if (ret) { | |
269bda1c | 389 | err("%s: Couldn't send command [%d]", serial->type->description, ret); |
1da177e4 | 390 | goto no_firmware; |
09fd6bc8 | 391 | } else if (alen != 2) { |
269bda1c | 392 | err("%s: Send command incomplete [%d]", serial->type->description, alen); |
1da177e4 LT |
393 | goto no_firmware; |
394 | } | |
395 | ||
396 | pipe = usb_rcvbulkpipe (serial->dev, command_port->bulk_in_endpointAddress); | |
397 | /* See the comment on the usb_clear_halt() above */ | |
398 | usb_clear_halt(serial->dev, pipe); | |
399 | ret = usb_bulk_msg (serial->dev, pipe, result, sizeof(*hw_info) + 1, &alen, COMMAND_TIMEOUT_MS); | |
400 | if (ret) { | |
269bda1c | 401 | err("%s: Couldn't get results [%d]", serial->type->description, ret); |
1da177e4 | 402 | goto no_firmware; |
09fd6bc8 | 403 | } else if (alen != sizeof(*hw_info) + 1) { |
269bda1c | 404 | err("%s: Get results incomplete [%d]", serial->type->description, alen); |
1da177e4 LT |
405 | goto no_firmware; |
406 | } else if (result[0] != command[0]) { | |
269bda1c | 407 | err("%s: Command failed [%d]", serial->type->description, result[0]); |
1da177e4 LT |
408 | goto no_firmware; |
409 | } | |
410 | ||
411 | hw_info = (struct whiteheat_hw_info *)&result[1]; | |
412 | ||
269bda1c | 413 | info("%s: Driver %s: Firmware v%d.%02d", serial->type->description, |
1da177e4 LT |
414 | DRIVER_VERSION, hw_info->sw_major_rev, hw_info->sw_minor_rev); |
415 | ||
416 | for (i = 0; i < serial->num_ports; i++) { | |
417 | port = serial->port[i]; | |
418 | ||
419 | info = (struct whiteheat_private *)kmalloc(sizeof(struct whiteheat_private), GFP_KERNEL); | |
420 | if (info == NULL) { | |
269bda1c | 421 | err("%s: Out of memory for port structures\n", serial->type->description); |
1da177e4 LT |
422 | goto no_private; |
423 | } | |
424 | ||
425 | spin_lock_init(&info->lock); | |
426 | info->flags = 0; | |
427 | info->mcr = 0; | |
c4028958 DH |
428 | INIT_WORK(&info->rx_work, rx_data_softint); |
429 | info->port = port; | |
1da177e4 LT |
430 | |
431 | INIT_LIST_HEAD(&info->rx_urbs_free); | |
432 | INIT_LIST_HEAD(&info->rx_urbs_submitted); | |
433 | INIT_LIST_HEAD(&info->rx_urb_q); | |
434 | INIT_LIST_HEAD(&info->tx_urbs_free); | |
435 | INIT_LIST_HEAD(&info->tx_urbs_submitted); | |
436 | ||
437 | for (j = 0; j < urb_pool_size; j++) { | |
438 | urb = usb_alloc_urb(0, GFP_KERNEL); | |
439 | if (!urb) { | |
440 | err("No free urbs available"); | |
441 | goto no_rx_urb; | |
442 | } | |
443 | buf_size = port->read_urb->transfer_buffer_length; | |
444 | urb->transfer_buffer = kmalloc(buf_size, GFP_KERNEL); | |
445 | if (!urb->transfer_buffer) { | |
446 | err("Couldn't allocate urb buffer"); | |
447 | goto no_rx_buf; | |
448 | } | |
449 | wrap = kmalloc(sizeof(*wrap), GFP_KERNEL); | |
450 | if (!wrap) { | |
451 | err("Couldn't allocate urb wrapper"); | |
452 | goto no_rx_wrap; | |
453 | } | |
454 | usb_fill_bulk_urb(urb, serial->dev, | |
455 | usb_rcvbulkpipe(serial->dev, | |
456 | port->bulk_in_endpointAddress), | |
457 | urb->transfer_buffer, buf_size, | |
458 | whiteheat_read_callback, port); | |
459 | wrap->urb = urb; | |
460 | list_add(&wrap->list, &info->rx_urbs_free); | |
461 | ||
462 | urb = usb_alloc_urb(0, GFP_KERNEL); | |
463 | if (!urb) { | |
464 | err("No free urbs available"); | |
465 | goto no_tx_urb; | |
466 | } | |
467 | buf_size = port->write_urb->transfer_buffer_length; | |
468 | urb->transfer_buffer = kmalloc(buf_size, GFP_KERNEL); | |
469 | if (!urb->transfer_buffer) { | |
470 | err("Couldn't allocate urb buffer"); | |
471 | goto no_tx_buf; | |
472 | } | |
473 | wrap = kmalloc(sizeof(*wrap), GFP_KERNEL); | |
474 | if (!wrap) { | |
475 | err("Couldn't allocate urb wrapper"); | |
476 | goto no_tx_wrap; | |
477 | } | |
478 | usb_fill_bulk_urb(urb, serial->dev, | |
479 | usb_sndbulkpipe(serial->dev, | |
480 | port->bulk_out_endpointAddress), | |
481 | urb->transfer_buffer, buf_size, | |
482 | whiteheat_write_callback, port); | |
483 | wrap->urb = urb; | |
484 | list_add(&wrap->list, &info->tx_urbs_free); | |
485 | } | |
486 | ||
487 | usb_set_serial_port_data(port, info); | |
488 | } | |
489 | ||
490 | command_info = (struct whiteheat_command_private *)kmalloc(sizeof(struct whiteheat_command_private), GFP_KERNEL); | |
491 | if (command_info == NULL) { | |
269bda1c | 492 | err("%s: Out of memory for port structures\n", serial->type->description); |
1da177e4 LT |
493 | goto no_command_private; |
494 | } | |
495 | ||
496 | spin_lock_init(&command_info->lock); | |
497 | command_info->port_running = 0; | |
498 | init_waitqueue_head(&command_info->wait_command); | |
499 | usb_set_serial_port_data(command_port, command_info); | |
500 | command_port->write_urb->complete = command_port_write_callback; | |
501 | command_port->read_urb->complete = command_port_read_callback; | |
502 | kfree(result); | |
503 | kfree(command); | |
504 | ||
505 | return 0; | |
506 | ||
507 | no_firmware: | |
508 | /* Firmware likely not running */ | |
269bda1c GKH |
509 | err("%s: Unable to retrieve firmware version, try replugging\n", serial->type->description); |
510 | err("%s: If the firmware is not running (status led not blinking)\n", serial->type->description); | |
511 | err("%s: please contact support@connecttech.com\n", serial->type->description); | |
67ca0284 | 512 | kfree(result); |
1da177e4 LT |
513 | return -ENODEV; |
514 | ||
515 | no_command_private: | |
516 | for (i = serial->num_ports - 1; i >= 0; i--) { | |
517 | port = serial->port[i]; | |
518 | info = usb_get_serial_port_data(port); | |
519 | for (j = urb_pool_size - 1; j >= 0; j--) { | |
520 | tmp = list_first(&info->tx_urbs_free); | |
521 | list_del(tmp); | |
522 | wrap = list_entry(tmp, struct whiteheat_urb_wrap, list); | |
523 | urb = wrap->urb; | |
524 | kfree(wrap); | |
525 | no_tx_wrap: | |
526 | kfree(urb->transfer_buffer); | |
527 | no_tx_buf: | |
528 | usb_free_urb(urb); | |
529 | no_tx_urb: | |
530 | tmp = list_first(&info->rx_urbs_free); | |
531 | list_del(tmp); | |
532 | wrap = list_entry(tmp, struct whiteheat_urb_wrap, list); | |
533 | urb = wrap->urb; | |
534 | kfree(wrap); | |
535 | no_rx_wrap: | |
536 | kfree(urb->transfer_buffer); | |
537 | no_rx_buf: | |
538 | usb_free_urb(urb); | |
539 | no_rx_urb: | |
540 | ; | |
541 | } | |
542 | kfree(info); | |
543 | no_private: | |
544 | ; | |
545 | } | |
546 | kfree(result); | |
547 | no_result_buffer: | |
548 | kfree(command); | |
549 | no_command_buffer: | |
550 | return -ENOMEM; | |
551 | } | |
552 | ||
553 | ||
554 | static void whiteheat_shutdown (struct usb_serial *serial) | |
555 | { | |
556 | struct usb_serial_port *command_port; | |
557 | struct usb_serial_port *port; | |
558 | struct whiteheat_private *info; | |
559 | struct whiteheat_urb_wrap *wrap; | |
560 | struct urb *urb; | |
561 | struct list_head *tmp; | |
562 | struct list_head *tmp2; | |
563 | int i; | |
564 | ||
565 | dbg("%s", __FUNCTION__); | |
566 | ||
567 | /* free up our private data for our command port */ | |
568 | command_port = serial->port[COMMAND_PORT]; | |
569 | kfree (usb_get_serial_port_data(command_port)); | |
570 | ||
571 | for (i = 0; i < serial->num_ports; i++) { | |
572 | port = serial->port[i]; | |
573 | info = usb_get_serial_port_data(port); | |
574 | list_for_each_safe(tmp, tmp2, &info->rx_urbs_free) { | |
575 | list_del(tmp); | |
576 | wrap = list_entry(tmp, struct whiteheat_urb_wrap, list); | |
577 | urb = wrap->urb; | |
578 | kfree(wrap); | |
579 | kfree(urb->transfer_buffer); | |
580 | usb_free_urb(urb); | |
581 | } | |
582 | list_for_each_safe(tmp, tmp2, &info->tx_urbs_free) { | |
583 | list_del(tmp); | |
584 | wrap = list_entry(tmp, struct whiteheat_urb_wrap, list); | |
585 | urb = wrap->urb; | |
586 | kfree(wrap); | |
587 | kfree(urb->transfer_buffer); | |
588 | usb_free_urb(urb); | |
589 | } | |
590 | kfree(info); | |
591 | } | |
592 | ||
593 | return; | |
594 | } | |
595 | ||
596 | ||
597 | static int whiteheat_open (struct usb_serial_port *port, struct file *filp) | |
598 | { | |
599 | int retval = 0; | |
606d099c | 600 | struct ktermios old_term; |
1da177e4 LT |
601 | |
602 | dbg("%s - port %d", __FUNCTION__, port->number); | |
603 | ||
604 | retval = start_command_port(port->serial); | |
605 | if (retval) | |
606 | goto exit; | |
607 | ||
608 | if (port->tty) | |
609 | port->tty->low_latency = 1; | |
610 | ||
611 | /* send an open port command */ | |
612 | retval = firm_open(port); | |
613 | if (retval) { | |
614 | stop_command_port(port->serial); | |
615 | goto exit; | |
616 | } | |
617 | ||
618 | retval = firm_purge(port, WHITEHEAT_PURGE_RX | WHITEHEAT_PURGE_TX); | |
619 | if (retval) { | |
620 | firm_close(port); | |
621 | stop_command_port(port->serial); | |
622 | goto exit; | |
623 | } | |
624 | ||
625 | old_term.c_cflag = ~port->tty->termios->c_cflag; | |
626 | old_term.c_iflag = ~port->tty->termios->c_iflag; | |
627 | whiteheat_set_termios(port, &old_term); | |
628 | ||
629 | /* Work around HCD bugs */ | |
630 | usb_clear_halt(port->serial->dev, port->read_urb->pipe); | |
631 | usb_clear_halt(port->serial->dev, port->write_urb->pipe); | |
632 | ||
633 | /* Start reading from the device */ | |
634 | retval = start_port_read(port); | |
635 | if (retval) { | |
636 | err("%s - failed submitting read urb, error %d", __FUNCTION__, retval); | |
637 | firm_close(port); | |
638 | stop_command_port(port->serial); | |
639 | goto exit; | |
640 | } | |
641 | ||
642 | exit: | |
643 | dbg("%s - exit, retval = %d", __FUNCTION__, retval); | |
644 | return retval; | |
645 | } | |
646 | ||
647 | ||
648 | static void whiteheat_close(struct usb_serial_port *port, struct file * filp) | |
649 | { | |
650 | struct whiteheat_private *info = usb_get_serial_port_data(port); | |
651 | struct whiteheat_urb_wrap *wrap; | |
652 | struct urb *urb; | |
653 | struct list_head *tmp; | |
654 | struct list_head *tmp2; | |
655 | unsigned long flags; | |
656 | ||
657 | dbg("%s - port %d", __FUNCTION__, port->number); | |
658 | ||
659 | /* filp is NULL when called from usb_serial_disconnect */ | |
660 | if (filp && (tty_hung_up_p(filp))) { | |
661 | return; | |
662 | } | |
663 | ||
664 | port->tty->closing = 1; | |
665 | ||
666 | /* | |
667 | * Not currently in use; tty_wait_until_sent() calls | |
668 | * serial_chars_in_buffer() which deadlocks on the second semaphore | |
669 | * acquisition. This should be fixed at some point. Greg's been | |
670 | * notified. | |
671 | if ((filp->f_flags & (O_NDELAY | O_NONBLOCK)) == 0) { | |
672 | tty_wait_until_sent(port->tty, CLOSING_DELAY); | |
673 | } | |
674 | */ | |
675 | ||
676 | if (port->tty->driver->flush_buffer) | |
677 | port->tty->driver->flush_buffer(port->tty); | |
678 | tty_ldisc_flush(port->tty); | |
679 | ||
680 | firm_report_tx_done(port); | |
681 | ||
682 | firm_close(port); | |
683 | ||
684 | /* shutdown our bulk reads and writes */ | |
685 | spin_lock_irqsave(&info->lock, flags); | |
686 | list_for_each_safe(tmp, tmp2, &info->rx_urbs_submitted) { | |
687 | wrap = list_entry(tmp, struct whiteheat_urb_wrap, list); | |
688 | urb = wrap->urb; | |
689 | usb_kill_urb(urb); | |
179e0917 | 690 | list_move(tmp, &info->rx_urbs_free); |
1da177e4 | 691 | } |
179e0917 AM |
692 | list_for_each_safe(tmp, tmp2, &info->rx_urb_q) |
693 | list_move(tmp, &info->rx_urbs_free); | |
694 | ||
1da177e4 LT |
695 | list_for_each_safe(tmp, tmp2, &info->tx_urbs_submitted) { |
696 | wrap = list_entry(tmp, struct whiteheat_urb_wrap, list); | |
697 | urb = wrap->urb; | |
698 | usb_kill_urb(urb); | |
179e0917 | 699 | list_move(tmp, &info->tx_urbs_free); |
1da177e4 LT |
700 | } |
701 | spin_unlock_irqrestore(&info->lock, flags); | |
702 | ||
703 | stop_command_port(port->serial); | |
704 | ||
705 | port->tty->closing = 0; | |
706 | } | |
707 | ||
708 | ||
709 | static int whiteheat_write(struct usb_serial_port *port, const unsigned char *buf, int count) | |
710 | { | |
711 | struct usb_serial *serial = port->serial; | |
712 | struct whiteheat_private *info = usb_get_serial_port_data(port); | |
713 | struct whiteheat_urb_wrap *wrap; | |
714 | struct urb *urb; | |
715 | int result; | |
716 | int bytes; | |
717 | int sent = 0; | |
718 | unsigned long flags; | |
719 | struct list_head *tmp; | |
720 | ||
721 | dbg("%s - port %d", __FUNCTION__, port->number); | |
722 | ||
723 | if (count == 0) { | |
724 | dbg("%s - write request of 0 bytes", __FUNCTION__); | |
725 | return (0); | |
726 | } | |
727 | ||
728 | while (count) { | |
729 | spin_lock_irqsave(&info->lock, flags); | |
730 | if (list_empty(&info->tx_urbs_free)) { | |
731 | spin_unlock_irqrestore(&info->lock, flags); | |
732 | break; | |
733 | } | |
734 | tmp = list_first(&info->tx_urbs_free); | |
735 | list_del(tmp); | |
736 | spin_unlock_irqrestore(&info->lock, flags); | |
737 | ||
738 | wrap = list_entry(tmp, struct whiteheat_urb_wrap, list); | |
739 | urb = wrap->urb; | |
740 | bytes = (count > port->bulk_out_size) ? port->bulk_out_size : count; | |
741 | memcpy (urb->transfer_buffer, buf + sent, bytes); | |
742 | ||
743 | usb_serial_debug_data(debug, &port->dev, __FUNCTION__, bytes, urb->transfer_buffer); | |
744 | ||
745 | urb->dev = serial->dev; | |
746 | urb->transfer_buffer_length = bytes; | |
747 | result = usb_submit_urb(urb, GFP_ATOMIC); | |
748 | if (result) { | |
749 | err("%s - failed submitting write urb, error %d", __FUNCTION__, result); | |
750 | sent = result; | |
751 | spin_lock_irqsave(&info->lock, flags); | |
752 | list_add(tmp, &info->tx_urbs_free); | |
753 | spin_unlock_irqrestore(&info->lock, flags); | |
754 | break; | |
755 | } else { | |
756 | sent += bytes; | |
757 | count -= bytes; | |
758 | spin_lock_irqsave(&info->lock, flags); | |
759 | list_add(tmp, &info->tx_urbs_submitted); | |
760 | spin_unlock_irqrestore(&info->lock, flags); | |
761 | } | |
762 | } | |
763 | ||
764 | return sent; | |
765 | } | |
766 | ||
767 | ||
768 | static int whiteheat_write_room(struct usb_serial_port *port) | |
769 | { | |
770 | struct whiteheat_private *info = usb_get_serial_port_data(port); | |
771 | struct list_head *tmp; | |
772 | int room = 0; | |
773 | unsigned long flags; | |
774 | ||
775 | dbg("%s - port %d", __FUNCTION__, port->number); | |
776 | ||
777 | spin_lock_irqsave(&info->lock, flags); | |
778 | list_for_each(tmp, &info->tx_urbs_free) | |
779 | room++; | |
780 | spin_unlock_irqrestore(&info->lock, flags); | |
781 | room *= port->bulk_out_size; | |
782 | ||
783 | dbg("%s - returns %d", __FUNCTION__, room); | |
784 | return (room); | |
785 | } | |
786 | ||
787 | ||
788 | static int whiteheat_tiocmget (struct usb_serial_port *port, struct file *file) | |
789 | { | |
790 | struct whiteheat_private *info = usb_get_serial_port_data(port); | |
791 | unsigned int modem_signals = 0; | |
792 | ||
793 | dbg("%s - port %d", __FUNCTION__, port->number); | |
794 | ||
795 | firm_get_dtr_rts(port); | |
796 | if (info->mcr & UART_MCR_DTR) | |
797 | modem_signals |= TIOCM_DTR; | |
798 | if (info->mcr & UART_MCR_RTS) | |
799 | modem_signals |= TIOCM_RTS; | |
800 | ||
801 | return modem_signals; | |
802 | } | |
803 | ||
804 | ||
805 | static int whiteheat_tiocmset (struct usb_serial_port *port, struct file *file, | |
806 | unsigned int set, unsigned int clear) | |
807 | { | |
808 | struct whiteheat_private *info = usb_get_serial_port_data(port); | |
809 | ||
810 | dbg("%s - port %d", __FUNCTION__, port->number); | |
811 | ||
812 | if (set & TIOCM_RTS) | |
813 | info->mcr |= UART_MCR_RTS; | |
814 | if (set & TIOCM_DTR) | |
815 | info->mcr |= UART_MCR_DTR; | |
816 | ||
817 | if (clear & TIOCM_RTS) | |
818 | info->mcr &= ~UART_MCR_RTS; | |
819 | if (clear & TIOCM_DTR) | |
820 | info->mcr &= ~UART_MCR_DTR; | |
821 | ||
822 | firm_set_dtr(port, info->mcr & UART_MCR_DTR); | |
823 | firm_set_rts(port, info->mcr & UART_MCR_RTS); | |
824 | return 0; | |
825 | } | |
826 | ||
827 | ||
828 | static int whiteheat_ioctl (struct usb_serial_port *port, struct file * file, unsigned int cmd, unsigned long arg) | |
829 | { | |
830 | struct serial_struct serstruct; | |
831 | void __user *user_arg = (void __user *)arg; | |
832 | ||
833 | dbg("%s - port %d, cmd 0x%.4x", __FUNCTION__, port->number, cmd); | |
834 | ||
835 | switch (cmd) { | |
836 | case TIOCGSERIAL: | |
837 | memset(&serstruct, 0, sizeof(serstruct)); | |
838 | serstruct.type = PORT_16654; | |
839 | serstruct.line = port->serial->minor; | |
840 | serstruct.port = port->number; | |
841 | serstruct.flags = ASYNC_SKIP_TEST | ASYNC_AUTO_IRQ; | |
842 | serstruct.xmit_fifo_size = port->bulk_out_size; | |
843 | serstruct.custom_divisor = 0; | |
844 | serstruct.baud_base = 460800; | |
845 | serstruct.close_delay = CLOSING_DELAY; | |
846 | serstruct.closing_wait = CLOSING_DELAY; | |
847 | ||
848 | if (copy_to_user(user_arg, &serstruct, sizeof(serstruct))) | |
849 | return -EFAULT; | |
850 | ||
851 | break; | |
852 | ||
853 | case TIOCSSERIAL: | |
854 | if (copy_from_user(&serstruct, user_arg, sizeof(serstruct))) | |
855 | return -EFAULT; | |
856 | ||
857 | /* | |
858 | * For now this is ignored. dip sets the ASYNC_[V]HI flags | |
859 | * but this isn't used by us at all. Maybe someone somewhere | |
860 | * will need the custom_divisor setting. | |
861 | */ | |
862 | ||
863 | break; | |
864 | ||
865 | default: | |
866 | break; | |
867 | } | |
868 | ||
869 | return -ENOIOCTLCMD; | |
870 | } | |
871 | ||
872 | ||
606d099c | 873 | static void whiteheat_set_termios (struct usb_serial_port *port, struct ktermios *old_termios) |
1da177e4 LT |
874 | { |
875 | dbg("%s -port %d", __FUNCTION__, port->number); | |
876 | ||
877 | if ((!port->tty) || (!port->tty->termios)) { | |
878 | dbg("%s - no tty structures", __FUNCTION__); | |
879 | goto exit; | |
880 | } | |
881 | ||
882 | /* check that they really want us to change something */ | |
883 | if (old_termios) { | |
884 | if ((port->tty->termios->c_cflag == old_termios->c_cflag) && | |
885 | (port->tty->termios->c_iflag == old_termios->c_iflag)) { | |
886 | dbg("%s - nothing to change...", __FUNCTION__); | |
887 | goto exit; | |
888 | } | |
889 | } | |
890 | ||
891 | firm_setup_port(port); | |
892 | ||
893 | exit: | |
894 | return; | |
895 | } | |
896 | ||
897 | ||
898 | static void whiteheat_break_ctl(struct usb_serial_port *port, int break_state) { | |
899 | firm_set_break(port, break_state); | |
900 | } | |
901 | ||
902 | ||
903 | static int whiteheat_chars_in_buffer(struct usb_serial_port *port) | |
904 | { | |
905 | struct whiteheat_private *info = usb_get_serial_port_data(port); | |
906 | struct list_head *tmp; | |
907 | struct whiteheat_urb_wrap *wrap; | |
908 | int chars = 0; | |
909 | unsigned long flags; | |
910 | ||
911 | dbg("%s - port %d", __FUNCTION__, port->number); | |
912 | ||
913 | spin_lock_irqsave(&info->lock, flags); | |
914 | list_for_each(tmp, &info->tx_urbs_submitted) { | |
915 | wrap = list_entry(tmp, struct whiteheat_urb_wrap, list); | |
916 | chars += wrap->urb->transfer_buffer_length; | |
917 | } | |
918 | spin_unlock_irqrestore(&info->lock, flags); | |
919 | ||
920 | dbg ("%s - returns %d", __FUNCTION__, chars); | |
921 | return (chars); | |
922 | } | |
923 | ||
924 | ||
925 | static void whiteheat_throttle (struct usb_serial_port *port) | |
926 | { | |
927 | struct whiteheat_private *info = usb_get_serial_port_data(port); | |
928 | unsigned long flags; | |
929 | ||
930 | dbg("%s - port %d", __FUNCTION__, port->number); | |
931 | ||
932 | spin_lock_irqsave(&info->lock, flags); | |
933 | info->flags |= THROTTLED; | |
934 | spin_unlock_irqrestore(&info->lock, flags); | |
935 | ||
936 | return; | |
937 | } | |
938 | ||
939 | ||
940 | static void whiteheat_unthrottle (struct usb_serial_port *port) | |
941 | { | |
942 | struct whiteheat_private *info = usb_get_serial_port_data(port); | |
943 | int actually_throttled; | |
944 | unsigned long flags; | |
945 | ||
946 | dbg("%s - port %d", __FUNCTION__, port->number); | |
947 | ||
948 | spin_lock_irqsave(&info->lock, flags); | |
949 | actually_throttled = info->flags & ACTUALLY_THROTTLED; | |
950 | info->flags &= ~(THROTTLED | ACTUALLY_THROTTLED); | |
951 | spin_unlock_irqrestore(&info->lock, flags); | |
952 | ||
953 | if (actually_throttled) | |
c4028958 | 954 | rx_data_softint(&info->rx_work); |
1da177e4 LT |
955 | |
956 | return; | |
957 | } | |
958 | ||
959 | ||
960 | /***************************************************************************** | |
961 | * Connect Tech's White Heat callback routines | |
962 | *****************************************************************************/ | |
7d12e780 | 963 | static void command_port_write_callback (struct urb *urb) |
1da177e4 LT |
964 | { |
965 | dbg("%s", __FUNCTION__); | |
966 | ||
967 | if (urb->status) { | |
968 | dbg ("nonzero urb status: %d", urb->status); | |
969 | return; | |
970 | } | |
971 | } | |
972 | ||
973 | ||
7d12e780 | 974 | static void command_port_read_callback (struct urb *urb) |
1da177e4 LT |
975 | { |
976 | struct usb_serial_port *command_port = (struct usb_serial_port *)urb->context; | |
977 | struct whiteheat_command_private *command_info; | |
978 | unsigned char *data = urb->transfer_buffer; | |
979 | int result; | |
980 | unsigned long flags; | |
981 | ||
982 | dbg("%s", __FUNCTION__); | |
983 | ||
984 | if (urb->status) { | |
985 | dbg("%s - nonzero urb status: %d", __FUNCTION__, urb->status); | |
986 | return; | |
987 | } | |
988 | ||
989 | usb_serial_debug_data(debug, &command_port->dev, __FUNCTION__, urb->actual_length, data); | |
990 | ||
991 | command_info = usb_get_serial_port_data(command_port); | |
992 | if (!command_info) { | |
993 | dbg ("%s - command_info is NULL, exiting.", __FUNCTION__); | |
994 | return; | |
995 | } | |
996 | spin_lock_irqsave(&command_info->lock, flags); | |
997 | ||
998 | if (data[0] == WHITEHEAT_CMD_COMPLETE) { | |
999 | command_info->command_finished = WHITEHEAT_CMD_COMPLETE; | |
1000 | wake_up_interruptible(&command_info->wait_command); | |
1001 | } else if (data[0] == WHITEHEAT_CMD_FAILURE) { | |
1002 | command_info->command_finished = WHITEHEAT_CMD_FAILURE; | |
1003 | wake_up_interruptible(&command_info->wait_command); | |
1004 | } else if (data[0] == WHITEHEAT_EVENT) { | |
1005 | /* These are unsolicited reports from the firmware, hence no waiting command to wakeup */ | |
1006 | dbg("%s - event received", __FUNCTION__); | |
1007 | } else if (data[0] == WHITEHEAT_GET_DTR_RTS) { | |
1008 | memcpy(command_info->result_buffer, &data[1], urb->actual_length - 1); | |
1009 | command_info->command_finished = WHITEHEAT_CMD_COMPLETE; | |
1010 | wake_up_interruptible(&command_info->wait_command); | |
1011 | } else { | |
1012 | dbg("%s - bad reply from firmware", __FUNCTION__); | |
1013 | } | |
1014 | ||
1015 | /* Continue trying to always read */ | |
1016 | command_port->read_urb->dev = command_port->serial->dev; | |
1017 | result = usb_submit_urb(command_port->read_urb, GFP_ATOMIC); | |
1018 | spin_unlock_irqrestore(&command_info->lock, flags); | |
1019 | if (result) | |
1020 | dbg("%s - failed resubmitting read urb, error %d", __FUNCTION__, result); | |
1021 | } | |
1022 | ||
1023 | ||
7d12e780 | 1024 | static void whiteheat_read_callback(struct urb *urb) |
1da177e4 LT |
1025 | { |
1026 | struct usb_serial_port *port = (struct usb_serial_port *)urb->context; | |
1027 | struct whiteheat_urb_wrap *wrap; | |
1028 | unsigned char *data = urb->transfer_buffer; | |
1029 | struct whiteheat_private *info = usb_get_serial_port_data(port); | |
1030 | ||
1031 | dbg("%s - port %d", __FUNCTION__, port->number); | |
1032 | ||
1033 | spin_lock(&info->lock); | |
1034 | wrap = urb_to_wrap(urb, &info->rx_urbs_submitted); | |
1035 | if (!wrap) { | |
1036 | spin_unlock(&info->lock); | |
1037 | err("%s - Not my urb!", __FUNCTION__); | |
1038 | return; | |
1039 | } | |
1040 | list_del(&wrap->list); | |
1041 | spin_unlock(&info->lock); | |
1042 | ||
1043 | if (urb->status) { | |
1044 | dbg("%s - nonzero read bulk status received: %d", __FUNCTION__, urb->status); | |
1045 | spin_lock(&info->lock); | |
1046 | list_add(&wrap->list, &info->rx_urbs_free); | |
1047 | spin_unlock(&info->lock); | |
1048 | return; | |
1049 | } | |
1050 | ||
1051 | usb_serial_debug_data(debug, &port->dev, __FUNCTION__, urb->actual_length, data); | |
1052 | ||
1053 | spin_lock(&info->lock); | |
1054 | list_add_tail(&wrap->list, &info->rx_urb_q); | |
1055 | if (info->flags & THROTTLED) { | |
1056 | info->flags |= ACTUALLY_THROTTLED; | |
1057 | spin_unlock(&info->lock); | |
1058 | return; | |
1059 | } | |
1060 | spin_unlock(&info->lock); | |
1061 | ||
1062 | schedule_work(&info->rx_work); | |
1063 | } | |
1064 | ||
1065 | ||
7d12e780 | 1066 | static void whiteheat_write_callback(struct urb *urb) |
1da177e4 LT |
1067 | { |
1068 | struct usb_serial_port *port = (struct usb_serial_port *)urb->context; | |
1069 | struct whiteheat_private *info = usb_get_serial_port_data(port); | |
1070 | struct whiteheat_urb_wrap *wrap; | |
1071 | ||
1072 | dbg("%s - port %d", __FUNCTION__, port->number); | |
1073 | ||
1074 | spin_lock(&info->lock); | |
1075 | wrap = urb_to_wrap(urb, &info->tx_urbs_submitted); | |
1076 | if (!wrap) { | |
1077 | spin_unlock(&info->lock); | |
1078 | err("%s - Not my urb!", __FUNCTION__); | |
1079 | return; | |
1080 | } | |
179e0917 | 1081 | list_move(&wrap->list, &info->tx_urbs_free); |
1da177e4 LT |
1082 | spin_unlock(&info->lock); |
1083 | ||
1084 | if (urb->status) { | |
1085 | dbg("%s - nonzero write bulk status received: %d", __FUNCTION__, urb->status); | |
1086 | return; | |
1087 | } | |
1088 | ||
cf2c7481 | 1089 | usb_serial_port_softint(port); |
1da177e4 LT |
1090 | } |
1091 | ||
1092 | ||
1093 | /***************************************************************************** | |
1094 | * Connect Tech's White Heat firmware interface | |
1095 | *****************************************************************************/ | |
1096 | static int firm_send_command (struct usb_serial_port *port, __u8 command, __u8 *data, __u8 datasize) | |
1097 | { | |
1098 | struct usb_serial_port *command_port; | |
1099 | struct whiteheat_command_private *command_info; | |
1100 | struct whiteheat_private *info; | |
1101 | __u8 *transfer_buffer; | |
1102 | int retval = 0; | |
1103 | unsigned long flags; | |
1104 | ||
1105 | dbg("%s - command %d", __FUNCTION__, command); | |
1106 | ||
1107 | command_port = port->serial->port[COMMAND_PORT]; | |
1108 | command_info = usb_get_serial_port_data(command_port); | |
1109 | spin_lock_irqsave(&command_info->lock, flags); | |
1110 | command_info->command_finished = FALSE; | |
1111 | ||
1112 | transfer_buffer = (__u8 *)command_port->write_urb->transfer_buffer; | |
1113 | transfer_buffer[0] = command; | |
1114 | memcpy (&transfer_buffer[1], data, datasize); | |
1115 | command_port->write_urb->transfer_buffer_length = datasize + 1; | |
1116 | command_port->write_urb->dev = port->serial->dev; | |
1117 | retval = usb_submit_urb (command_port->write_urb, GFP_KERNEL); | |
1118 | if (retval) { | |
1119 | dbg("%s - submit urb failed", __FUNCTION__); | |
1120 | goto exit; | |
1121 | } | |
1122 | spin_unlock_irqrestore(&command_info->lock, flags); | |
1123 | ||
1124 | /* wait for the command to complete */ | |
1125 | wait_event_interruptible_timeout(command_info->wait_command, | |
1126 | (command_info->command_finished != FALSE), COMMAND_TIMEOUT); | |
1127 | ||
1128 | spin_lock_irqsave(&command_info->lock, flags); | |
1129 | ||
1130 | if (command_info->command_finished == FALSE) { | |
1131 | dbg("%s - command timed out.", __FUNCTION__); | |
1132 | retval = -ETIMEDOUT; | |
1133 | goto exit; | |
1134 | } | |
1135 | ||
1136 | if (command_info->command_finished == WHITEHEAT_CMD_FAILURE) { | |
1137 | dbg("%s - command failed.", __FUNCTION__); | |
1138 | retval = -EIO; | |
1139 | goto exit; | |
1140 | } | |
1141 | ||
1142 | if (command_info->command_finished == WHITEHEAT_CMD_COMPLETE) { | |
1143 | dbg("%s - command completed.", __FUNCTION__); | |
1144 | switch (command) { | |
1145 | case WHITEHEAT_GET_DTR_RTS: | |
1146 | info = usb_get_serial_port_data(port); | |
1147 | memcpy(&info->mcr, command_info->result_buffer, sizeof(struct whiteheat_dr_info)); | |
1148 | break; | |
1149 | } | |
1150 | } | |
1151 | ||
1152 | exit: | |
1153 | spin_unlock_irqrestore(&command_info->lock, flags); | |
1154 | return retval; | |
1155 | } | |
1156 | ||
1157 | ||
1158 | static int firm_open(struct usb_serial_port *port) { | |
1159 | struct whiteheat_simple open_command; | |
1160 | ||
1161 | open_command.port = port->number - port->serial->minor + 1; | |
1162 | return firm_send_command(port, WHITEHEAT_OPEN, (__u8 *)&open_command, sizeof(open_command)); | |
1163 | } | |
1164 | ||
1165 | ||
1166 | static int firm_close(struct usb_serial_port *port) { | |
1167 | struct whiteheat_simple close_command; | |
1168 | ||
1169 | close_command.port = port->number - port->serial->minor + 1; | |
1170 | return firm_send_command(port, WHITEHEAT_CLOSE, (__u8 *)&close_command, sizeof(close_command)); | |
1171 | } | |
1172 | ||
1173 | ||
1174 | static int firm_setup_port(struct usb_serial_port *port) { | |
1175 | struct whiteheat_port_settings port_settings; | |
1176 | unsigned int cflag = port->tty->termios->c_cflag; | |
1177 | ||
1178 | port_settings.port = port->number + 1; | |
1179 | ||
1180 | /* get the byte size */ | |
1181 | switch (cflag & CSIZE) { | |
1182 | case CS5: port_settings.bits = 5; break; | |
1183 | case CS6: port_settings.bits = 6; break; | |
1184 | case CS7: port_settings.bits = 7; break; | |
1185 | default: | |
1186 | case CS8: port_settings.bits = 8; break; | |
1187 | } | |
1188 | dbg("%s - data bits = %d", __FUNCTION__, port_settings.bits); | |
1189 | ||
1190 | /* determine the parity */ | |
1191 | if (cflag & PARENB) | |
1192 | if (cflag & CMSPAR) | |
1193 | if (cflag & PARODD) | |
1194 | port_settings.parity = WHITEHEAT_PAR_MARK; | |
1195 | else | |
1196 | port_settings.parity = WHITEHEAT_PAR_SPACE; | |
1197 | else | |
1198 | if (cflag & PARODD) | |
1199 | port_settings.parity = WHITEHEAT_PAR_ODD; | |
1200 | else | |
1201 | port_settings.parity = WHITEHEAT_PAR_EVEN; | |
1202 | else | |
1203 | port_settings.parity = WHITEHEAT_PAR_NONE; | |
1204 | dbg("%s - parity = %c", __FUNCTION__, port_settings.parity); | |
1205 | ||
1206 | /* figure out the stop bits requested */ | |
1207 | if (cflag & CSTOPB) | |
1208 | port_settings.stop = 2; | |
1209 | else | |
1210 | port_settings.stop = 1; | |
1211 | dbg("%s - stop bits = %d", __FUNCTION__, port_settings.stop); | |
1212 | ||
1213 | /* figure out the flow control settings */ | |
1214 | if (cflag & CRTSCTS) | |
1215 | port_settings.hflow = (WHITEHEAT_HFLOW_CTS | WHITEHEAT_HFLOW_RTS); | |
1216 | else | |
1217 | port_settings.hflow = WHITEHEAT_HFLOW_NONE; | |
1218 | dbg("%s - hardware flow control = %s %s %s %s", __FUNCTION__, | |
1219 | (port_settings.hflow & WHITEHEAT_HFLOW_CTS) ? "CTS" : "", | |
1220 | (port_settings.hflow & WHITEHEAT_HFLOW_RTS) ? "RTS" : "", | |
1221 | (port_settings.hflow & WHITEHEAT_HFLOW_DSR) ? "DSR" : "", | |
1222 | (port_settings.hflow & WHITEHEAT_HFLOW_DTR) ? "DTR" : ""); | |
1223 | ||
1224 | /* determine software flow control */ | |
1225 | if (I_IXOFF(port->tty)) | |
1226 | port_settings.sflow = WHITEHEAT_SFLOW_RXTX; | |
1227 | else | |
1228 | port_settings.sflow = WHITEHEAT_SFLOW_NONE; | |
1229 | dbg("%s - software flow control = %c", __FUNCTION__, port_settings.sflow); | |
1230 | ||
1231 | port_settings.xon = START_CHAR(port->tty); | |
1232 | port_settings.xoff = STOP_CHAR(port->tty); | |
1233 | dbg("%s - XON = %2x, XOFF = %2x", __FUNCTION__, port_settings.xon, port_settings.xoff); | |
1234 | ||
1235 | /* get the baud rate wanted */ | |
1236 | port_settings.baud = tty_get_baud_rate(port->tty); | |
1237 | dbg("%s - baud rate = %d", __FUNCTION__, port_settings.baud); | |
1238 | ||
1239 | /* handle any settings that aren't specified in the tty structure */ | |
1240 | port_settings.lloop = 0; | |
1241 | ||
1242 | /* now send the message to the device */ | |
1243 | return firm_send_command(port, WHITEHEAT_SETUP_PORT, (__u8 *)&port_settings, sizeof(port_settings)); | |
1244 | } | |
1245 | ||
1246 | ||
1247 | static int firm_set_rts(struct usb_serial_port *port, __u8 onoff) { | |
1248 | struct whiteheat_set_rdb rts_command; | |
1249 | ||
1250 | rts_command.port = port->number - port->serial->minor + 1; | |
1251 | rts_command.state = onoff; | |
1252 | return firm_send_command(port, WHITEHEAT_SET_RTS, (__u8 *)&rts_command, sizeof(rts_command)); | |
1253 | } | |
1254 | ||
1255 | ||
1256 | static int firm_set_dtr(struct usb_serial_port *port, __u8 onoff) { | |
1257 | struct whiteheat_set_rdb dtr_command; | |
1258 | ||
1259 | dtr_command.port = port->number - port->serial->minor + 1; | |
1260 | dtr_command.state = onoff; | |
1261 | return firm_send_command(port, WHITEHEAT_SET_RTS, (__u8 *)&dtr_command, sizeof(dtr_command)); | |
1262 | } | |
1263 | ||
1264 | ||
1265 | static int firm_set_break(struct usb_serial_port *port, __u8 onoff) { | |
1266 | struct whiteheat_set_rdb break_command; | |
1267 | ||
1268 | break_command.port = port->number - port->serial->minor + 1; | |
1269 | break_command.state = onoff; | |
1270 | return firm_send_command(port, WHITEHEAT_SET_RTS, (__u8 *)&break_command, sizeof(break_command)); | |
1271 | } | |
1272 | ||
1273 | ||
1274 | static int firm_purge(struct usb_serial_port *port, __u8 rxtx) { | |
1275 | struct whiteheat_purge purge_command; | |
1276 | ||
1277 | purge_command.port = port->number - port->serial->minor + 1; | |
1278 | purge_command.what = rxtx; | |
1279 | return firm_send_command(port, WHITEHEAT_PURGE, (__u8 *)&purge_command, sizeof(purge_command)); | |
1280 | } | |
1281 | ||
1282 | ||
1283 | static int firm_get_dtr_rts(struct usb_serial_port *port) { | |
1284 | struct whiteheat_simple get_dr_command; | |
1285 | ||
1286 | get_dr_command.port = port->number - port->serial->minor + 1; | |
1287 | return firm_send_command(port, WHITEHEAT_GET_DTR_RTS, (__u8 *)&get_dr_command, sizeof(get_dr_command)); | |
1288 | } | |
1289 | ||
1290 | ||
1291 | static int firm_report_tx_done(struct usb_serial_port *port) { | |
1292 | struct whiteheat_simple close_command; | |
1293 | ||
1294 | close_command.port = port->number - port->serial->minor + 1; | |
1295 | return firm_send_command(port, WHITEHEAT_REPORT_TX_DONE, (__u8 *)&close_command, sizeof(close_command)); | |
1296 | } | |
1297 | ||
1298 | ||
1299 | /***************************************************************************** | |
1300 | * Connect Tech's White Heat utility functions | |
1301 | *****************************************************************************/ | |
1302 | static int start_command_port(struct usb_serial *serial) | |
1303 | { | |
1304 | struct usb_serial_port *command_port; | |
1305 | struct whiteheat_command_private *command_info; | |
1306 | unsigned long flags; | |
1307 | int retval = 0; | |
1308 | ||
1309 | command_port = serial->port[COMMAND_PORT]; | |
1310 | command_info = usb_get_serial_port_data(command_port); | |
1311 | spin_lock_irqsave(&command_info->lock, flags); | |
1312 | if (!command_info->port_running) { | |
1313 | /* Work around HCD bugs */ | |
1314 | usb_clear_halt(serial->dev, command_port->read_urb->pipe); | |
1315 | ||
1316 | command_port->read_urb->dev = serial->dev; | |
1317 | retval = usb_submit_urb(command_port->read_urb, GFP_KERNEL); | |
1318 | if (retval) { | |
1319 | err("%s - failed submitting read urb, error %d", __FUNCTION__, retval); | |
1320 | goto exit; | |
1321 | } | |
1322 | } | |
1323 | command_info->port_running++; | |
1324 | ||
1325 | exit: | |
1326 | spin_unlock_irqrestore(&command_info->lock, flags); | |
1327 | return retval; | |
1328 | } | |
1329 | ||
1330 | ||
1331 | static void stop_command_port(struct usb_serial *serial) | |
1332 | { | |
1333 | struct usb_serial_port *command_port; | |
1334 | struct whiteheat_command_private *command_info; | |
1335 | unsigned long flags; | |
1336 | ||
1337 | command_port = serial->port[COMMAND_PORT]; | |
1338 | command_info = usb_get_serial_port_data(command_port); | |
1339 | spin_lock_irqsave(&command_info->lock, flags); | |
1340 | command_info->port_running--; | |
1341 | if (!command_info->port_running) | |
1342 | usb_kill_urb(command_port->read_urb); | |
1343 | spin_unlock_irqrestore(&command_info->lock, flags); | |
1344 | } | |
1345 | ||
1346 | ||
1347 | static int start_port_read(struct usb_serial_port *port) | |
1348 | { | |
1349 | struct whiteheat_private *info = usb_get_serial_port_data(port); | |
1350 | struct whiteheat_urb_wrap *wrap; | |
1351 | struct urb *urb; | |
1352 | int retval = 0; | |
1353 | unsigned long flags; | |
1354 | struct list_head *tmp; | |
1355 | struct list_head *tmp2; | |
1356 | ||
1357 | spin_lock_irqsave(&info->lock, flags); | |
1358 | ||
1359 | list_for_each_safe(tmp, tmp2, &info->rx_urbs_free) { | |
1360 | list_del(tmp); | |
1361 | wrap = list_entry(tmp, struct whiteheat_urb_wrap, list); | |
1362 | urb = wrap->urb; | |
1363 | urb->dev = port->serial->dev; | |
1364 | retval = usb_submit_urb(urb, GFP_KERNEL); | |
1365 | if (retval) { | |
1366 | list_add(tmp, &info->rx_urbs_free); | |
1367 | list_for_each_safe(tmp, tmp2, &info->rx_urbs_submitted) { | |
1368 | wrap = list_entry(tmp, struct whiteheat_urb_wrap, list); | |
1369 | urb = wrap->urb; | |
1370 | usb_kill_urb(urb); | |
179e0917 | 1371 | list_move(tmp, &info->rx_urbs_free); |
1da177e4 LT |
1372 | } |
1373 | break; | |
1374 | } | |
1375 | list_add(tmp, &info->rx_urbs_submitted); | |
1376 | } | |
1377 | ||
1378 | spin_unlock_irqrestore(&info->lock, flags); | |
1379 | ||
1380 | return retval; | |
1381 | } | |
1382 | ||
1383 | ||
1384 | static struct whiteheat_urb_wrap *urb_to_wrap(struct urb* urb, struct list_head *head) | |
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; | |
1da177e4 LT |
1410 | struct tty_struct *tty = port->tty; |
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); | |
1422 | return; | |
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 | ||
1432 | if (tty && urb->actual_length) { | |
33f0f88f AC |
1433 | int len = tty_buffer_request_room(tty, urb->actual_length); |
1434 | /* This stuff can go away now I suspect */ | |
1435 | if (unlikely(len < urb->actual_length)) { | |
1da177e4 LT |
1436 | spin_lock_irqsave(&info->lock, flags); |
1437 | list_add(tmp, &info->rx_urb_q); | |
1438 | spin_unlock_irqrestore(&info->lock, flags); | |
1439 | tty_flip_buffer_push(tty); | |
1440 | schedule_work(&info->rx_work); | |
1441 | return; | |
1442 | } | |
33f0f88f AC |
1443 | tty_insert_flip_string(tty, urb->transfer_buffer, len); |
1444 | sent += len; | |
1da177e4 LT |
1445 | } |
1446 | ||
1447 | urb->dev = port->serial->dev; | |
1448 | result = usb_submit_urb(urb, GFP_ATOMIC); | |
1449 | if (result) { | |
1450 | err("%s - failed resubmitting read urb, error %d", __FUNCTION__, result); | |
1451 | spin_lock_irqsave(&info->lock, flags); | |
1452 | list_add(tmp, &info->rx_urbs_free); | |
1453 | continue; | |
1454 | } | |
1455 | ||
1456 | spin_lock_irqsave(&info->lock, flags); | |
1457 | list_add(tmp, &info->rx_urbs_submitted); | |
1458 | } | |
1459 | spin_unlock_irqrestore(&info->lock, flags); | |
1460 | ||
1461 | if (sent) | |
1462 | tty_flip_buffer_push(tty); | |
1463 | } | |
1464 | ||
1465 | ||
1466 | /***************************************************************************** | |
1467 | * Connect Tech's White Heat module functions | |
1468 | *****************************************************************************/ | |
1469 | static int __init whiteheat_init (void) | |
1470 | { | |
1471 | int retval; | |
1472 | retval = usb_serial_register(&whiteheat_fake_device); | |
1473 | if (retval) | |
1474 | goto failed_fake_register; | |
1475 | retval = usb_serial_register(&whiteheat_device); | |
1476 | if (retval) | |
1477 | goto failed_device_register; | |
1478 | retval = usb_register(&whiteheat_driver); | |
1479 | if (retval) | |
1480 | goto failed_usb_register; | |
1481 | info(DRIVER_DESC " " DRIVER_VERSION); | |
1482 | return 0; | |
1483 | failed_usb_register: | |
1484 | usb_serial_deregister(&whiteheat_device); | |
1485 | failed_device_register: | |
1486 | usb_serial_deregister(&whiteheat_fake_device); | |
1487 | failed_fake_register: | |
1488 | return retval; | |
1489 | } | |
1490 | ||
1491 | ||
1492 | static void __exit whiteheat_exit (void) | |
1493 | { | |
1494 | usb_deregister (&whiteheat_driver); | |
1495 | usb_serial_deregister (&whiteheat_fake_device); | |
1496 | usb_serial_deregister (&whiteheat_device); | |
1497 | } | |
1498 | ||
1499 | ||
1500 | module_init(whiteheat_init); | |
1501 | module_exit(whiteheat_exit); | |
1502 | ||
1503 | MODULE_AUTHOR( DRIVER_AUTHOR ); | |
1504 | MODULE_DESCRIPTION( DRIVER_DESC ); | |
1505 | MODULE_LICENSE("GPL"); | |
1506 | ||
1507 | module_param(urb_pool_size, int, 0); | |
1508 | MODULE_PARM_DESC(urb_pool_size, "Number of urbs to use for buffering"); | |
1509 | ||
1510 | module_param(debug, bool, S_IRUGO | S_IWUSR); | |
1511 | MODULE_PARM_DESC(debug, "Debug enabled or not"); |