Commit | Line | Data |
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1da177e4 LT |
1 | /* vi: ts=8 sw=8 |
2 | * | |
3 | * TI 3410/5052 USB Serial Driver | |
4 | * | |
5 | * Copyright (C) 2004 Texas Instruments | |
6 | * | |
7 | * This driver is based on the Linux io_ti driver, which is | |
8 | * Copyright (C) 2000-2002 Inside Out Networks | |
9 | * Copyright (C) 2001-2002 Greg Kroah-Hartman | |
10 | * | |
11 | * This program is free software; you can redistribute it and/or modify | |
12 | * it under the terms of the GNU General Public License as published by | |
13 | * the Free Software Foundation; either version 2 of the License, or | |
14 | * (at your option) any later version. | |
15 | * | |
16 | * For questions or problems with this driver, contact Texas Instruments | |
17 | * technical support, or Al Borchers <alborchers@steinerpoint.com>, or | |
18 | * Peter Berger <pberger@brimson.com>. | |
a30fa793 | 19 | * |
1da177e4 LT |
20 | * This driver needs this hotplug script in /etc/hotplug/usb/ti_usb_3410_5052 |
21 | * or in /etc/hotplug.d/usb/ti_usb_3410_5052.hotplug to set the device | |
22 | * configuration. | |
23 | * | |
24 | * #!/bin/bash | |
25 | * | |
26 | * BOOT_CONFIG=1 | |
27 | * ACTIVE_CONFIG=2 | |
28 | * | |
29 | * if [[ "$ACTION" != "add" ]] | |
30 | * then | |
31 | * exit | |
32 | * fi | |
33 | * | |
34 | * CONFIG_PATH=/sys${DEVPATH%/?*}/bConfigurationValue | |
35 | * | |
36 | * if [[ 0`cat $CONFIG_PATH` -ne $BOOT_CONFIG ]] | |
37 | * then | |
38 | * exit | |
39 | * fi | |
40 | * | |
41 | * PRODUCT=${PRODUCT%/?*} # delete version | |
42 | * VENDOR_ID=`printf "%d" 0x${PRODUCT%/?*}` | |
43 | * PRODUCT_ID=`printf "%d" 0x${PRODUCT#*?/}` | |
44 | * | |
45 | * PARAM_PATH=/sys/module/ti_usb_3410_5052/parameters | |
46 | * | |
47 | * function scan() { | |
48 | * s=$1 | |
49 | * shift | |
50 | * for i | |
51 | * do | |
52 | * if [[ $s -eq $i ]] | |
53 | * then | |
54 | * return 0 | |
55 | * fi | |
56 | * done | |
57 | * return 1 | |
58 | * } | |
59 | * | |
60 | * IFS=$IFS, | |
61 | * | |
62 | * if (scan $VENDOR_ID 1105 `cat $PARAM_PATH/vendor_3410` && | |
63 | * scan $PRODUCT_ID 13328 `cat $PARAM_PATH/product_3410`) || | |
64 | * (scan $VENDOR_ID 1105 `cat $PARAM_PATH/vendor_5052` && | |
65 | * scan $PRODUCT_ID 20562 20818 20570 20575 `cat $PARAM_PATH/product_5052`) | |
66 | * then | |
67 | * echo $ACTIVE_CONFIG > $CONFIG_PATH | |
68 | * fi | |
69 | */ | |
70 | ||
1da177e4 LT |
71 | #include <linux/kernel.h> |
72 | #include <linux/errno.h> | |
95da310e | 73 | #include <linux/firmware.h> |
1da177e4 LT |
74 | #include <linux/init.h> |
75 | #include <linux/slab.h> | |
76 | #include <linux/tty.h> | |
77 | #include <linux/tty_driver.h> | |
78 | #include <linux/tty_flip.h> | |
79 | #include <linux/module.h> | |
80 | #include <linux/spinlock.h> | |
81 | #include <linux/ioctl.h> | |
82 | #include <linux/serial.h> | |
83 | #include <linux/circ_buf.h> | |
9da0068a | 84 | #include <linux/mutex.h> |
a30fa793 | 85 | #include <linux/uaccess.h> |
1da177e4 | 86 | #include <linux/usb.h> |
a969888c | 87 | #include <linux/usb/serial.h> |
5f24e2d6 | 88 | #include <linux/firmware.h> |
1da177e4 | 89 | |
1da177e4 | 90 | #include "ti_usb_3410_5052.h" |
1da177e4 LT |
91 | |
92 | /* Defines */ | |
93 | ||
94 | #define TI_DRIVER_VERSION "v0.9" | |
95 | #define TI_DRIVER_AUTHOR "Al Borchers <alborchers@steinerpoint.com>" | |
96 | #define TI_DRIVER_DESC "TI USB 3410/5052 Serial Driver" | |
97 | ||
98 | #define TI_FIRMWARE_BUF_SIZE 16284 | |
99 | ||
100 | #define TI_WRITE_BUF_SIZE 1024 | |
101 | ||
102 | #define TI_TRANSFER_TIMEOUT 2 | |
103 | ||
104 | #define TI_DEFAULT_LOW_LATENCY 0 | |
105 | #define TI_DEFAULT_CLOSING_WAIT 4000 /* in .01 secs */ | |
106 | ||
107 | /* supported setserial flags */ | |
108 | #define TI_SET_SERIAL_FLAGS (ASYNC_LOW_LATENCY) | |
109 | ||
110 | /* read urb states */ | |
111 | #define TI_READ_URB_RUNNING 0 | |
112 | #define TI_READ_URB_STOPPING 1 | |
113 | #define TI_READ_URB_STOPPED 2 | |
114 | ||
115 | #define TI_EXTRA_VID_PID_COUNT 5 | |
116 | ||
117 | ||
118 | /* Structures */ | |
119 | ||
120 | struct ti_port { | |
121 | int tp_is_open; | |
122 | __u8 tp_msr; | |
123 | __u8 tp_lsr; | |
124 | __u8 tp_shadow_mcr; | |
125 | __u8 tp_uart_mode; /* 232 or 485 modes */ | |
126 | unsigned int tp_uart_base_addr; | |
127 | int tp_flags; | |
128 | int tp_closing_wait;/* in .01 secs */ | |
129 | struct async_icount tp_icount; | |
130 | wait_queue_head_t tp_msr_wait; /* wait for msr change */ | |
131 | wait_queue_head_t tp_write_wait; | |
132 | struct ti_device *tp_tdev; | |
133 | struct usb_serial_port *tp_port; | |
134 | spinlock_t tp_lock; | |
135 | int tp_read_urb_state; | |
136 | int tp_write_urb_in_use; | |
137 | struct circ_buf *tp_write_buf; | |
138 | }; | |
139 | ||
140 | struct ti_device { | |
9da0068a | 141 | struct mutex td_open_close_lock; |
1da177e4 LT |
142 | int td_open_port_count; |
143 | struct usb_serial *td_serial; | |
144 | int td_is_3410; | |
145 | int td_urb_error; | |
146 | }; | |
147 | ||
148 | ||
149 | /* Function Declarations */ | |
150 | ||
151 | static int ti_startup(struct usb_serial *serial); | |
152 | static void ti_shutdown(struct usb_serial *serial); | |
95da310e | 153 | static int ti_open(struct tty_struct *tty, struct usb_serial_port *port, |
a30fa793 | 154 | struct file *file); |
95da310e | 155 | static void ti_close(struct tty_struct *tty, struct usb_serial_port *port, |
a30fa793 | 156 | struct file *file); |
95da310e | 157 | static int ti_write(struct tty_struct *tty, struct usb_serial_port *port, |
a30fa793 | 158 | const unsigned char *data, int count); |
95da310e AC |
159 | static int ti_write_room(struct tty_struct *tty); |
160 | static int ti_chars_in_buffer(struct tty_struct *tty); | |
161 | static void ti_throttle(struct tty_struct *tty); | |
162 | static void ti_unthrottle(struct tty_struct *tty); | |
a30fa793 AC |
163 | static int ti_ioctl(struct tty_struct *tty, struct file *file, |
164 | unsigned int cmd, unsigned long arg); | |
165 | static void ti_set_termios(struct tty_struct *tty, | |
166 | struct usb_serial_port *port, struct ktermios *old_termios); | |
95da310e AC |
167 | static int ti_tiocmget(struct tty_struct *tty, struct file *file); |
168 | static int ti_tiocmset(struct tty_struct *tty, struct file *file, | |
a30fa793 | 169 | unsigned int set, unsigned int clear); |
95da310e | 170 | static void ti_break(struct tty_struct *tty, int break_state); |
7d12e780 DH |
171 | static void ti_interrupt_callback(struct urb *urb); |
172 | static void ti_bulk_in_callback(struct urb *urb); | |
173 | static void ti_bulk_out_callback(struct urb *urb); | |
1da177e4 LT |
174 | |
175 | static void ti_recv(struct device *dev, struct tty_struct *tty, | |
176 | unsigned char *data, int length); | |
177 | static void ti_send(struct ti_port *tport); | |
178 | static int ti_set_mcr(struct ti_port *tport, unsigned int mcr); | |
179 | static int ti_get_lsr(struct ti_port *tport); | |
180 | static int ti_get_serial_info(struct ti_port *tport, | |
181 | struct serial_struct __user *ret_arg); | |
4a90f09b | 182 | static int ti_set_serial_info(struct tty_struct *tty, struct ti_port *tport, |
1da177e4 LT |
183 | struct serial_struct __user *new_arg); |
184 | static void ti_handle_new_msr(struct ti_port *tport, __u8 msr); | |
185 | ||
186 | static void ti_drain(struct ti_port *tport, unsigned long timeout, int flush); | |
187 | ||
188 | static void ti_stop_read(struct ti_port *tport, struct tty_struct *tty); | |
189 | static int ti_restart_read(struct ti_port *tport, struct tty_struct *tty); | |
190 | ||
191 | static int ti_command_out_sync(struct ti_device *tdev, __u8 command, | |
192 | __u16 moduleid, __u16 value, __u8 *data, int size); | |
193 | static int ti_command_in_sync(struct ti_device *tdev, __u8 command, | |
194 | __u16 moduleid, __u16 value, __u8 *data, int size); | |
195 | ||
196 | static int ti_write_byte(struct ti_device *tdev, unsigned long addr, | |
197 | __u8 mask, __u8 byte); | |
198 | ||
95da310e | 199 | static int ti_download_firmware(struct ti_device *tdev, int type); |
1da177e4 LT |
200 | |
201 | /* circular buffer */ | |
202 | static struct circ_buf *ti_buf_alloc(void); | |
203 | static void ti_buf_free(struct circ_buf *cb); | |
204 | static void ti_buf_clear(struct circ_buf *cb); | |
205 | static int ti_buf_data_avail(struct circ_buf *cb); | |
206 | static int ti_buf_space_avail(struct circ_buf *cb); | |
207 | static int ti_buf_put(struct circ_buf *cb, const char *buf, int count); | |
208 | static int ti_buf_get(struct circ_buf *cb, char *buf, int count); | |
209 | ||
210 | ||
211 | /* Data */ | |
212 | ||
213 | /* module parameters */ | |
214 | static int debug; | |
215 | static int low_latency = TI_DEFAULT_LOW_LATENCY; | |
216 | static int closing_wait = TI_DEFAULT_CLOSING_WAIT; | |
217 | static ushort vendor_3410[TI_EXTRA_VID_PID_COUNT]; | |
64a6f950 | 218 | static unsigned int vendor_3410_count; |
1da177e4 | 219 | static ushort product_3410[TI_EXTRA_VID_PID_COUNT]; |
64a6f950 | 220 | static unsigned int product_3410_count; |
1da177e4 | 221 | static ushort vendor_5052[TI_EXTRA_VID_PID_COUNT]; |
64a6f950 | 222 | static unsigned int vendor_5052_count; |
1da177e4 | 223 | static ushort product_5052[TI_EXTRA_VID_PID_COUNT]; |
64a6f950 | 224 | static unsigned int product_5052_count; |
1da177e4 LT |
225 | |
226 | /* supported devices */ | |
227 | /* the array dimension is the number of default entries plus */ | |
228 | /* TI_EXTRA_VID_PID_COUNT user defined entries plus 1 terminating */ | |
229 | /* null entry */ | |
230 | static struct usb_device_id ti_id_table_3410[1+TI_EXTRA_VID_PID_COUNT+1] = { | |
231 | { USB_DEVICE(TI_VENDOR_ID, TI_3410_PRODUCT_ID) }, | |
1f54a6ae | 232 | { USB_DEVICE(TI_VENDOR_ID, TI_3410_EZ430_ID) }, |
1da177e4 LT |
233 | }; |
234 | ||
235 | static struct usb_device_id ti_id_table_5052[4+TI_EXTRA_VID_PID_COUNT+1] = { | |
236 | { USB_DEVICE(TI_VENDOR_ID, TI_5052_BOOT_PRODUCT_ID) }, | |
237 | { USB_DEVICE(TI_VENDOR_ID, TI_5152_BOOT_PRODUCT_ID) }, | |
238 | { USB_DEVICE(TI_VENDOR_ID, TI_5052_EEPROM_PRODUCT_ID) }, | |
239 | { USB_DEVICE(TI_VENDOR_ID, TI_5052_FIRMWARE_PRODUCT_ID) }, | |
240 | }; | |
241 | ||
242 | static struct usb_device_id ti_id_table_combined[] = { | |
243 | { USB_DEVICE(TI_VENDOR_ID, TI_3410_PRODUCT_ID) }, | |
1f54a6ae | 244 | { USB_DEVICE(TI_VENDOR_ID, TI_3410_EZ430_ID) }, |
1da177e4 LT |
245 | { USB_DEVICE(TI_VENDOR_ID, TI_5052_BOOT_PRODUCT_ID) }, |
246 | { USB_DEVICE(TI_VENDOR_ID, TI_5152_BOOT_PRODUCT_ID) }, | |
247 | { USB_DEVICE(TI_VENDOR_ID, TI_5052_EEPROM_PRODUCT_ID) }, | |
248 | { USB_DEVICE(TI_VENDOR_ID, TI_5052_FIRMWARE_PRODUCT_ID) }, | |
249 | { } | |
250 | }; | |
251 | ||
252 | static struct usb_driver ti_usb_driver = { | |
1da177e4 LT |
253 | .name = "ti_usb_3410_5052", |
254 | .probe = usb_serial_probe, | |
255 | .disconnect = usb_serial_disconnect, | |
256 | .id_table = ti_id_table_combined, | |
ba9dc657 | 257 | .no_dynamic_id = 1, |
1da177e4 LT |
258 | }; |
259 | ||
ea65370d | 260 | static struct usb_serial_driver ti_1port_device = { |
18fcac35 | 261 | .driver = { |
269bda1c GKH |
262 | .owner = THIS_MODULE, |
263 | .name = "ti_usb_3410_5052_1", | |
18fcac35 | 264 | }, |
269bda1c | 265 | .description = "TI USB 3410 1 port adapter", |
d9b1b787 | 266 | .usb_driver = &ti_usb_driver, |
1da177e4 | 267 | .id_table = ti_id_table_3410, |
1da177e4 LT |
268 | .num_ports = 1, |
269 | .attach = ti_startup, | |
270 | .shutdown = ti_shutdown, | |
271 | .open = ti_open, | |
272 | .close = ti_close, | |
273 | .write = ti_write, | |
274 | .write_room = ti_write_room, | |
275 | .chars_in_buffer = ti_chars_in_buffer, | |
276 | .throttle = ti_throttle, | |
277 | .unthrottle = ti_unthrottle, | |
278 | .ioctl = ti_ioctl, | |
279 | .set_termios = ti_set_termios, | |
280 | .tiocmget = ti_tiocmget, | |
281 | .tiocmset = ti_tiocmset, | |
282 | .break_ctl = ti_break, | |
283 | .read_int_callback = ti_interrupt_callback, | |
284 | .read_bulk_callback = ti_bulk_in_callback, | |
285 | .write_bulk_callback = ti_bulk_out_callback, | |
286 | }; | |
287 | ||
ea65370d | 288 | static struct usb_serial_driver ti_2port_device = { |
18fcac35 | 289 | .driver = { |
269bda1c GKH |
290 | .owner = THIS_MODULE, |
291 | .name = "ti_usb_3410_5052_2", | |
18fcac35 | 292 | }, |
269bda1c | 293 | .description = "TI USB 5052 2 port adapter", |
d9b1b787 | 294 | .usb_driver = &ti_usb_driver, |
1da177e4 | 295 | .id_table = ti_id_table_5052, |
1da177e4 LT |
296 | .num_ports = 2, |
297 | .attach = ti_startup, | |
298 | .shutdown = ti_shutdown, | |
299 | .open = ti_open, | |
300 | .close = ti_close, | |
301 | .write = ti_write, | |
302 | .write_room = ti_write_room, | |
303 | .chars_in_buffer = ti_chars_in_buffer, | |
304 | .throttle = ti_throttle, | |
305 | .unthrottle = ti_unthrottle, | |
306 | .ioctl = ti_ioctl, | |
307 | .set_termios = ti_set_termios, | |
308 | .tiocmget = ti_tiocmget, | |
309 | .tiocmset = ti_tiocmset, | |
310 | .break_ctl = ti_break, | |
311 | .read_int_callback = ti_interrupt_callback, | |
312 | .read_bulk_callback = ti_bulk_in_callback, | |
313 | .write_bulk_callback = ti_bulk_out_callback, | |
314 | }; | |
315 | ||
316 | ||
317 | /* Module */ | |
318 | ||
319 | MODULE_AUTHOR(TI_DRIVER_AUTHOR); | |
320 | MODULE_DESCRIPTION(TI_DRIVER_DESC); | |
321 | MODULE_VERSION(TI_DRIVER_VERSION); | |
322 | MODULE_LICENSE("GPL"); | |
323 | ||
5f24e2d6 DW |
324 | MODULE_FIRMWARE("ti_3410.fw"); |
325 | MODULE_FIRMWARE("ti_5052.fw"); | |
326 | ||
1da177e4 LT |
327 | module_param(debug, bool, S_IRUGO | S_IWUSR); |
328 | MODULE_PARM_DESC(debug, "Enable debugging, 0=no, 1=yes"); | |
329 | ||
330 | module_param(low_latency, bool, S_IRUGO | S_IWUSR); | |
a30fa793 AC |
331 | MODULE_PARM_DESC(low_latency, |
332 | "TTY low_latency flag, 0=off, 1=on, default is off"); | |
1da177e4 LT |
333 | |
334 | module_param(closing_wait, int, S_IRUGO | S_IWUSR); | |
a30fa793 AC |
335 | MODULE_PARM_DESC(closing_wait, |
336 | "Maximum wait for data to drain in close, in .01 secs, default is 4000"); | |
1da177e4 LT |
337 | |
338 | module_param_array(vendor_3410, ushort, &vendor_3410_count, S_IRUGO); | |
a30fa793 AC |
339 | MODULE_PARM_DESC(vendor_3410, |
340 | "Vendor ids for 3410 based devices, 1-5 short integers"); | |
1da177e4 | 341 | module_param_array(product_3410, ushort, &product_3410_count, S_IRUGO); |
a30fa793 AC |
342 | MODULE_PARM_DESC(product_3410, |
343 | "Product ids for 3410 based devices, 1-5 short integers"); | |
1da177e4 | 344 | module_param_array(vendor_5052, ushort, &vendor_5052_count, S_IRUGO); |
a30fa793 AC |
345 | MODULE_PARM_DESC(vendor_5052, |
346 | "Vendor ids for 5052 based devices, 1-5 short integers"); | |
1da177e4 | 347 | module_param_array(product_5052, ushort, &product_5052_count, S_IRUGO); |
a30fa793 AC |
348 | MODULE_PARM_DESC(product_5052, |
349 | "Product ids for 5052 based devices, 1-5 short integers"); | |
1da177e4 LT |
350 | |
351 | MODULE_DEVICE_TABLE(usb, ti_id_table_combined); | |
352 | ||
353 | ||
354 | /* Functions */ | |
355 | ||
356 | static int __init ti_init(void) | |
357 | { | |
a30fa793 | 358 | int i, j; |
1da177e4 LT |
359 | int ret; |
360 | ||
1da177e4 | 361 | /* insert extra vendor and product ids */ |
52950ed4 | 362 | j = ARRAY_SIZE(ti_id_table_3410) - TI_EXTRA_VID_PID_COUNT - 1; |
a30fa793 | 363 | for (i = 0; i < min(vendor_3410_count, product_3410_count); i++, j++) { |
1da177e4 LT |
364 | ti_id_table_3410[j].idVendor = vendor_3410[i]; |
365 | ti_id_table_3410[j].idProduct = product_3410[i]; | |
366 | ti_id_table_3410[j].match_flags = USB_DEVICE_ID_MATCH_DEVICE; | |
367 | } | |
52950ed4 | 368 | j = ARRAY_SIZE(ti_id_table_5052) - TI_EXTRA_VID_PID_COUNT - 1; |
a30fa793 | 369 | for (i = 0; i < min(vendor_5052_count, product_5052_count); i++, j++) { |
1da177e4 LT |
370 | ti_id_table_5052[j].idVendor = vendor_5052[i]; |
371 | ti_id_table_5052[j].idProduct = product_5052[i]; | |
372 | ti_id_table_5052[j].match_flags = USB_DEVICE_ID_MATCH_DEVICE; | |
373 | } | |
374 | ||
375 | ret = usb_serial_register(&ti_1port_device); | |
376 | if (ret) | |
377 | goto failed_1port; | |
378 | ret = usb_serial_register(&ti_2port_device); | |
379 | if (ret) | |
380 | goto failed_2port; | |
381 | ||
382 | ret = usb_register(&ti_usb_driver); | |
383 | if (ret) | |
384 | goto failed_usb; | |
385 | ||
386 | info(TI_DRIVER_DESC " " TI_DRIVER_VERSION); | |
387 | ||
388 | return 0; | |
389 | ||
390 | failed_usb: | |
391 | usb_serial_deregister(&ti_2port_device); | |
392 | failed_2port: | |
393 | usb_serial_deregister(&ti_1port_device); | |
394 | failed_1port: | |
395 | return ret; | |
396 | } | |
397 | ||
398 | ||
399 | static void __exit ti_exit(void) | |
400 | { | |
401 | usb_serial_deregister(&ti_1port_device); | |
402 | usb_serial_deregister(&ti_2port_device); | |
403 | usb_deregister(&ti_usb_driver); | |
404 | } | |
405 | ||
406 | ||
407 | module_init(ti_init); | |
408 | module_exit(ti_exit); | |
409 | ||
410 | ||
411 | static int ti_startup(struct usb_serial *serial) | |
412 | { | |
413 | struct ti_device *tdev; | |
414 | struct ti_port *tport; | |
415 | struct usb_device *dev = serial->dev; | |
416 | int status; | |
417 | int i; | |
418 | ||
419 | ||
420 | dbg("%s - product 0x%4X, num configurations %d, configuration value %d", | |
441b62c1 | 421 | __func__, le16_to_cpu(dev->descriptor.idProduct), |
1da177e4 LT |
422 | dev->descriptor.bNumConfigurations, |
423 | dev->actconfig->desc.bConfigurationValue); | |
424 | ||
425 | /* create device structure */ | |
80b6ca48 | 426 | tdev = kzalloc(sizeof(struct ti_device), GFP_KERNEL); |
1da177e4 | 427 | if (tdev == NULL) { |
441b62c1 | 428 | dev_err(&dev->dev, "%s - out of memory\n", __func__); |
1da177e4 LT |
429 | return -ENOMEM; |
430 | } | |
9da0068a | 431 | mutex_init(&tdev->td_open_close_lock); |
1da177e4 LT |
432 | tdev->td_serial = serial; |
433 | usb_set_serial_data(serial, tdev); | |
434 | ||
435 | /* determine device type */ | |
436 | if (usb_match_id(serial->interface, ti_id_table_3410)) | |
437 | tdev->td_is_3410 = 1; | |
a30fa793 AC |
438 | dbg("%s - device type is %s", __func__, |
439 | tdev->td_is_3410 ? "3410" : "5052"); | |
1da177e4 LT |
440 | |
441 | /* if we have only 1 configuration, download firmware */ | |
442 | if (dev->descriptor.bNumConfigurations == 1) { | |
1da177e4 | 443 | if (tdev->td_is_3410) |
95da310e | 444 | status = ti_download_firmware(tdev, 3410); |
1da177e4 | 445 | else |
95da310e | 446 | status = ti_download_firmware(tdev, 5052); |
1da177e4 LT |
447 | if (status) |
448 | goto free_tdev; | |
449 | ||
450 | /* 3410 must be reset, 5052 resets itself */ | |
451 | if (tdev->td_is_3410) { | |
452 | msleep_interruptible(100); | |
453 | usb_reset_device(dev); | |
454 | } | |
455 | ||
456 | status = -ENODEV; | |
457 | goto free_tdev; | |
a30fa793 | 458 | } |
1da177e4 LT |
459 | |
460 | /* the second configuration must be set (in sysfs by hotplug script) */ | |
461 | if (dev->actconfig->desc.bConfigurationValue == TI_BOOT_CONFIG) { | |
462 | status = -ENODEV; | |
463 | goto free_tdev; | |
464 | } | |
465 | ||
466 | /* set up port structures */ | |
467 | for (i = 0; i < serial->num_ports; ++i) { | |
7ac9da10 | 468 | tport = kzalloc(sizeof(struct ti_port), GFP_KERNEL); |
1da177e4 | 469 | if (tport == NULL) { |
441b62c1 | 470 | dev_err(&dev->dev, "%s - out of memory\n", __func__); |
1da177e4 LT |
471 | status = -ENOMEM; |
472 | goto free_tports; | |
473 | } | |
1da177e4 | 474 | spin_lock_init(&tport->tp_lock); |
a30fa793 AC |
475 | tport->tp_uart_base_addr = (i == 0 ? |
476 | TI_UART1_BASE_ADDR : TI_UART2_BASE_ADDR); | |
1da177e4 LT |
477 | tport->tp_flags = low_latency ? ASYNC_LOW_LATENCY : 0; |
478 | tport->tp_closing_wait = closing_wait; | |
479 | init_waitqueue_head(&tport->tp_msr_wait); | |
480 | init_waitqueue_head(&tport->tp_write_wait); | |
481 | tport->tp_write_buf = ti_buf_alloc(); | |
482 | if (tport->tp_write_buf == NULL) { | |
441b62c1 | 483 | dev_err(&dev->dev, "%s - out of memory\n", __func__); |
1da177e4 LT |
484 | kfree(tport); |
485 | status = -ENOMEM; | |
486 | goto free_tports; | |
487 | } | |
488 | tport->tp_port = serial->port[i]; | |
489 | tport->tp_tdev = tdev; | |
490 | usb_set_serial_port_data(serial->port[i], tport); | |
491 | tport->tp_uart_mode = 0; /* default is RS232 */ | |
492 | } | |
a30fa793 | 493 | |
1da177e4 LT |
494 | return 0; |
495 | ||
496 | free_tports: | |
a30fa793 | 497 | for (--i; i >= 0; --i) { |
1da177e4 LT |
498 | tport = usb_get_serial_port_data(serial->port[i]); |
499 | ti_buf_free(tport->tp_write_buf); | |
500 | kfree(tport); | |
501 | usb_set_serial_port_data(serial->port[i], NULL); | |
502 | } | |
503 | free_tdev: | |
504 | kfree(tdev); | |
505 | usb_set_serial_data(serial, NULL); | |
506 | return status; | |
507 | } | |
508 | ||
509 | ||
510 | static void ti_shutdown(struct usb_serial *serial) | |
511 | { | |
512 | int i; | |
513 | struct ti_device *tdev = usb_get_serial_data(serial); | |
514 | struct ti_port *tport; | |
515 | ||
441b62c1 | 516 | dbg("%s", __func__); |
1da177e4 | 517 | |
a30fa793 | 518 | for (i = 0; i < serial->num_ports; ++i) { |
1da177e4 LT |
519 | tport = usb_get_serial_port_data(serial->port[i]); |
520 | if (tport) { | |
521 | ti_buf_free(tport->tp_write_buf); | |
522 | kfree(tport); | |
523 | usb_set_serial_port_data(serial->port[i], NULL); | |
524 | } | |
525 | } | |
526 | ||
1bc3c9e1 | 527 | kfree(tdev); |
1da177e4 LT |
528 | usb_set_serial_data(serial, NULL); |
529 | } | |
530 | ||
531 | ||
95da310e AC |
532 | static int ti_open(struct tty_struct *tty, |
533 | struct usb_serial_port *port, struct file *file) | |
1da177e4 LT |
534 | { |
535 | struct ti_port *tport = usb_get_serial_port_data(port); | |
536 | struct ti_device *tdev; | |
537 | struct usb_device *dev; | |
538 | struct urb *urb; | |
539 | int port_number; | |
540 | int status; | |
a30fa793 AC |
541 | __u16 open_settings = (__u8)(TI_PIPE_MODE_CONTINOUS | |
542 | TI_PIPE_TIMEOUT_ENABLE | | |
1da177e4 LT |
543 | (TI_TRANSFER_TIMEOUT << 2)); |
544 | ||
441b62c1 | 545 | dbg("%s - port %d", __func__, port->number); |
1da177e4 LT |
546 | |
547 | if (tport == NULL) | |
548 | return -ENODEV; | |
549 | ||
550 | dev = port->serial->dev; | |
551 | tdev = tport->tp_tdev; | |
552 | ||
553 | /* only one open on any port on a device at a time */ | |
9da0068a | 554 | if (mutex_lock_interruptible(&tdev->td_open_close_lock)) |
1da177e4 LT |
555 | return -ERESTARTSYS; |
556 | ||
95da310e AC |
557 | if (tty) |
558 | tty->low_latency = | |
559 | (tport->tp_flags & ASYNC_LOW_LATENCY) ? 1 : 0; | |
1da177e4 LT |
560 | |
561 | port_number = port->number - port->serial->minor; | |
562 | ||
563 | memset(&(tport->tp_icount), 0x00, sizeof(tport->tp_icount)); | |
564 | ||
565 | tport->tp_msr = 0; | |
566 | tport->tp_shadow_mcr |= (TI_MCR_RTS | TI_MCR_DTR); | |
567 | ||
568 | /* start interrupt urb the first time a port is opened on this device */ | |
569 | if (tdev->td_open_port_count == 0) { | |
441b62c1 | 570 | dbg("%s - start interrupt in urb", __func__); |
1da177e4 LT |
571 | urb = tdev->td_serial->port[0]->interrupt_in_urb; |
572 | if (!urb) { | |
a30fa793 AC |
573 | dev_err(&port->dev, "%s - no interrupt urb\n", |
574 | __func__); | |
1da177e4 | 575 | status = -EINVAL; |
9da0068a | 576 | goto release_lock; |
1da177e4 LT |
577 | } |
578 | urb->complete = ti_interrupt_callback; | |
579 | urb->context = tdev; | |
580 | urb->dev = dev; | |
581 | status = usb_submit_urb(urb, GFP_KERNEL); | |
582 | if (status) { | |
a30fa793 AC |
583 | dev_err(&port->dev, |
584 | "%s - submit interrupt urb failed, %d\n", | |
585 | __func__, status); | |
9da0068a | 586 | goto release_lock; |
1da177e4 LT |
587 | } |
588 | } | |
589 | ||
95da310e AC |
590 | if (tty) |
591 | ti_set_termios(tty, port, tty->termios); | |
1da177e4 | 592 | |
441b62c1 | 593 | dbg("%s - sending TI_OPEN_PORT", __func__); |
1da177e4 LT |
594 | status = ti_command_out_sync(tdev, TI_OPEN_PORT, |
595 | (__u8)(TI_UART1_PORT + port_number), open_settings, NULL, 0); | |
596 | if (status) { | |
a30fa793 AC |
597 | dev_err(&port->dev, "%s - cannot send open command, %d\n", |
598 | __func__, status); | |
1da177e4 LT |
599 | goto unlink_int_urb; |
600 | } | |
601 | ||
441b62c1 | 602 | dbg("%s - sending TI_START_PORT", __func__); |
1da177e4 LT |
603 | status = ti_command_out_sync(tdev, TI_START_PORT, |
604 | (__u8)(TI_UART1_PORT + port_number), 0, NULL, 0); | |
605 | if (status) { | |
a30fa793 AC |
606 | dev_err(&port->dev, "%s - cannot send start command, %d\n", |
607 | __func__, status); | |
1da177e4 LT |
608 | goto unlink_int_urb; |
609 | } | |
610 | ||
441b62c1 | 611 | dbg("%s - sending TI_PURGE_PORT", __func__); |
1da177e4 LT |
612 | status = ti_command_out_sync(tdev, TI_PURGE_PORT, |
613 | (__u8)(TI_UART1_PORT + port_number), TI_PURGE_INPUT, NULL, 0); | |
614 | if (status) { | |
a30fa793 AC |
615 | dev_err(&port->dev, "%s - cannot clear input buffers, %d\n", |
616 | __func__, status); | |
1da177e4 LT |
617 | goto unlink_int_urb; |
618 | } | |
619 | status = ti_command_out_sync(tdev, TI_PURGE_PORT, | |
620 | (__u8)(TI_UART1_PORT + port_number), TI_PURGE_OUTPUT, NULL, 0); | |
621 | if (status) { | |
a30fa793 AC |
622 | dev_err(&port->dev, "%s - cannot clear output buffers, %d\n", |
623 | __func__, status); | |
1da177e4 LT |
624 | goto unlink_int_urb; |
625 | } | |
626 | ||
627 | /* reset the data toggle on the bulk endpoints to work around bug in | |
628 | * host controllers where things get out of sync some times */ | |
629 | usb_clear_halt(dev, port->write_urb->pipe); | |
630 | usb_clear_halt(dev, port->read_urb->pipe); | |
631 | ||
95da310e AC |
632 | if (tty) |
633 | ti_set_termios(tty, port, tty->termios); | |
1da177e4 | 634 | |
441b62c1 | 635 | dbg("%s - sending TI_OPEN_PORT (2)", __func__); |
1da177e4 LT |
636 | status = ti_command_out_sync(tdev, TI_OPEN_PORT, |
637 | (__u8)(TI_UART1_PORT + port_number), open_settings, NULL, 0); | |
638 | if (status) { | |
a30fa793 AC |
639 | dev_err(&port->dev, "%s - cannot send open command (2), %d\n", |
640 | __func__, status); | |
1da177e4 LT |
641 | goto unlink_int_urb; |
642 | } | |
643 | ||
441b62c1 | 644 | dbg("%s - sending TI_START_PORT (2)", __func__); |
1da177e4 LT |
645 | status = ti_command_out_sync(tdev, TI_START_PORT, |
646 | (__u8)(TI_UART1_PORT + port_number), 0, NULL, 0); | |
647 | if (status) { | |
a30fa793 AC |
648 | dev_err(&port->dev, "%s - cannot send start command (2), %d\n", |
649 | __func__, status); | |
1da177e4 LT |
650 | goto unlink_int_urb; |
651 | } | |
652 | ||
653 | /* start read urb */ | |
441b62c1 | 654 | dbg("%s - start read urb", __func__); |
1da177e4 LT |
655 | urb = port->read_urb; |
656 | if (!urb) { | |
441b62c1 | 657 | dev_err(&port->dev, "%s - no read urb\n", __func__); |
1da177e4 LT |
658 | status = -EINVAL; |
659 | goto unlink_int_urb; | |
660 | } | |
661 | tport->tp_read_urb_state = TI_READ_URB_RUNNING; | |
662 | urb->complete = ti_bulk_in_callback; | |
663 | urb->context = tport; | |
664 | urb->dev = dev; | |
665 | status = usb_submit_urb(urb, GFP_KERNEL); | |
666 | if (status) { | |
a30fa793 AC |
667 | dev_err(&port->dev, "%s - submit read urb failed, %d\n", |
668 | __func__, status); | |
1da177e4 LT |
669 | goto unlink_int_urb; |
670 | } | |
671 | ||
672 | tport->tp_is_open = 1; | |
673 | ++tdev->td_open_port_count; | |
674 | ||
9da0068a | 675 | goto release_lock; |
1da177e4 LT |
676 | |
677 | unlink_int_urb: | |
678 | if (tdev->td_open_port_count == 0) | |
679 | usb_kill_urb(port->serial->port[0]->interrupt_in_urb); | |
9da0068a MK |
680 | release_lock: |
681 | mutex_unlock(&tdev->td_open_close_lock); | |
441b62c1 | 682 | dbg("%s - exit %d", __func__, status); |
1da177e4 LT |
683 | return status; |
684 | } | |
685 | ||
686 | ||
95da310e AC |
687 | static void ti_close(struct tty_struct *tty, struct usb_serial_port *port, |
688 | struct file *file) | |
1da177e4 LT |
689 | { |
690 | struct ti_device *tdev; | |
691 | struct ti_port *tport; | |
692 | int port_number; | |
693 | int status; | |
9da0068a | 694 | int do_unlock; |
1da177e4 | 695 | |
441b62c1 | 696 | dbg("%s - port %d", __func__, port->number); |
a30fa793 | 697 | |
1da177e4 LT |
698 | tdev = usb_get_serial_data(port->serial); |
699 | tport = usb_get_serial_port_data(port); | |
700 | if (tdev == NULL || tport == NULL) | |
701 | return; | |
702 | ||
703 | tport->tp_is_open = 0; | |
704 | ||
705 | ti_drain(tport, (tport->tp_closing_wait*HZ)/100, 1); | |
706 | ||
707 | usb_kill_urb(port->read_urb); | |
708 | usb_kill_urb(port->write_urb); | |
709 | tport->tp_write_urb_in_use = 0; | |
710 | ||
711 | port_number = port->number - port->serial->minor; | |
712 | ||
441b62c1 | 713 | dbg("%s - sending TI_CLOSE_PORT", __func__); |
1da177e4 LT |
714 | status = ti_command_out_sync(tdev, TI_CLOSE_PORT, |
715 | (__u8)(TI_UART1_PORT + port_number), 0, NULL, 0); | |
716 | if (status) | |
a30fa793 AC |
717 | dev_err(&port->dev, |
718 | "%s - cannot send close port command, %d\n" | |
719 | , __func__, status); | |
1da177e4 | 720 | |
9da0068a MK |
721 | /* if mutex_lock is interrupted, continue anyway */ |
722 | do_unlock = !mutex_lock_interruptible(&tdev->td_open_close_lock); | |
1da177e4 LT |
723 | --tport->tp_tdev->td_open_port_count; |
724 | if (tport->tp_tdev->td_open_port_count <= 0) { | |
725 | /* last port is closed, shut down interrupt urb */ | |
726 | usb_kill_urb(port->serial->port[0]->interrupt_in_urb); | |
727 | tport->tp_tdev->td_open_port_count = 0; | |
728 | } | |
9da0068a MK |
729 | if (do_unlock) |
730 | mutex_unlock(&tdev->td_open_close_lock); | |
1da177e4 | 731 | |
441b62c1 | 732 | dbg("%s - exit", __func__); |
1da177e4 LT |
733 | } |
734 | ||
735 | ||
95da310e AC |
736 | static int ti_write(struct tty_struct *tty, struct usb_serial_port *port, |
737 | const unsigned char *data, int count) | |
1da177e4 LT |
738 | { |
739 | struct ti_port *tport = usb_get_serial_port_data(port); | |
740 | unsigned long flags; | |
741 | ||
441b62c1 | 742 | dbg("%s - port %d", __func__, port->number); |
1da177e4 LT |
743 | |
744 | if (count == 0) { | |
441b62c1 | 745 | dbg("%s - write request of 0 bytes", __func__); |
1da177e4 LT |
746 | return 0; |
747 | } | |
748 | ||
749 | if (tport == NULL || !tport->tp_is_open) | |
750 | return -ENODEV; | |
751 | ||
752 | spin_lock_irqsave(&tport->tp_lock, flags); | |
753 | count = ti_buf_put(tport->tp_write_buf, data, count); | |
754 | spin_unlock_irqrestore(&tport->tp_lock, flags); | |
755 | ||
756 | ti_send(tport); | |
757 | ||
758 | return count; | |
759 | } | |
760 | ||
761 | ||
95da310e | 762 | static int ti_write_room(struct tty_struct *tty) |
1da177e4 | 763 | { |
95da310e | 764 | struct usb_serial_port *port = tty->driver_data; |
1da177e4 LT |
765 | struct ti_port *tport = usb_get_serial_port_data(port); |
766 | int room = 0; | |
767 | unsigned long flags; | |
768 | ||
441b62c1 | 769 | dbg("%s - port %d", __func__, port->number); |
1da177e4 LT |
770 | |
771 | if (tport == NULL) | |
772 | return -ENODEV; | |
a30fa793 | 773 | |
1da177e4 LT |
774 | spin_lock_irqsave(&tport->tp_lock, flags); |
775 | room = ti_buf_space_avail(tport->tp_write_buf); | |
776 | spin_unlock_irqrestore(&tport->tp_lock, flags); | |
777 | ||
441b62c1 | 778 | dbg("%s - returns %d", __func__, room); |
1da177e4 LT |
779 | return room; |
780 | } | |
781 | ||
782 | ||
95da310e | 783 | static int ti_chars_in_buffer(struct tty_struct *tty) |
1da177e4 | 784 | { |
95da310e | 785 | struct usb_serial_port *port = tty->driver_data; |
1da177e4 LT |
786 | struct ti_port *tport = usb_get_serial_port_data(port); |
787 | int chars = 0; | |
788 | unsigned long flags; | |
789 | ||
441b62c1 | 790 | dbg("%s - port %d", __func__, port->number); |
1da177e4 LT |
791 | |
792 | if (tport == NULL) | |
793 | return -ENODEV; | |
794 | ||
795 | spin_lock_irqsave(&tport->tp_lock, flags); | |
796 | chars = ti_buf_data_avail(tport->tp_write_buf); | |
797 | spin_unlock_irqrestore(&tport->tp_lock, flags); | |
798 | ||
441b62c1 | 799 | dbg("%s - returns %d", __func__, chars); |
1da177e4 LT |
800 | return chars; |
801 | } | |
802 | ||
803 | ||
95da310e | 804 | static void ti_throttle(struct tty_struct *tty) |
1da177e4 | 805 | { |
95da310e | 806 | struct usb_serial_port *port = tty->driver_data; |
1da177e4 | 807 | struct ti_port *tport = usb_get_serial_port_data(port); |
1da177e4 | 808 | |
441b62c1 | 809 | dbg("%s - port %d", __func__, port->number); |
1da177e4 LT |
810 | |
811 | if (tport == NULL) | |
812 | return; | |
813 | ||
1da177e4 LT |
814 | if (I_IXOFF(tty) || C_CRTSCTS(tty)) |
815 | ti_stop_read(tport, tty); | |
816 | ||
817 | } | |
818 | ||
819 | ||
95da310e | 820 | static void ti_unthrottle(struct tty_struct *tty) |
1da177e4 | 821 | { |
95da310e | 822 | struct usb_serial_port *port = tty->driver_data; |
1da177e4 | 823 | struct ti_port *tport = usb_get_serial_port_data(port); |
1da177e4 LT |
824 | int status; |
825 | ||
441b62c1 | 826 | dbg("%s - port %d", __func__, port->number); |
1da177e4 LT |
827 | |
828 | if (tport == NULL) | |
829 | return; | |
830 | ||
1da177e4 LT |
831 | if (I_IXOFF(tty) || C_CRTSCTS(tty)) { |
832 | status = ti_restart_read(tport, tty); | |
833 | if (status) | |
a30fa793 AC |
834 | dev_err(&port->dev, "%s - cannot restart read, %d\n", |
835 | __func__, status); | |
1da177e4 LT |
836 | } |
837 | } | |
838 | ||
839 | ||
95da310e | 840 | static int ti_ioctl(struct tty_struct *tty, struct file *file, |
1da177e4 LT |
841 | unsigned int cmd, unsigned long arg) |
842 | { | |
95da310e | 843 | struct usb_serial_port *port = tty->driver_data; |
1da177e4 LT |
844 | struct ti_port *tport = usb_get_serial_port_data(port); |
845 | struct async_icount cnow; | |
846 | struct async_icount cprev; | |
847 | ||
441b62c1 | 848 | dbg("%s - port %d, cmd = 0x%04X", __func__, port->number, cmd); |
1da177e4 LT |
849 | |
850 | if (tport == NULL) | |
851 | return -ENODEV; | |
852 | ||
853 | switch (cmd) { | |
a30fa793 AC |
854 | case TIOCGSERIAL: |
855 | dbg("%s - (%d) TIOCGSERIAL", __func__, port->number); | |
856 | return ti_get_serial_info(tport, | |
857 | (struct serial_struct __user *)arg); | |
858 | case TIOCSSERIAL: | |
859 | dbg("%s - (%d) TIOCSSERIAL", __func__, port->number); | |
4a90f09b AC |
860 | return ti_set_serial_info(tty, tport, |
861 | (struct serial_struct __user *)arg); | |
a30fa793 AC |
862 | case TIOCMIWAIT: |
863 | dbg("%s - (%d) TIOCMIWAIT", __func__, port->number); | |
864 | cprev = tport->tp_icount; | |
865 | while (1) { | |
866 | interruptible_sleep_on(&tport->tp_msr_wait); | |
867 | if (signal_pending(current)) | |
868 | return -ERESTARTSYS; | |
869 | cnow = tport->tp_icount; | |
870 | if (cnow.rng == cprev.rng && cnow.dsr == cprev.dsr && | |
871 | cnow.dcd == cprev.dcd && cnow.cts == cprev.cts) | |
872 | return -EIO; /* no change => error */ | |
873 | if (((arg & TIOCM_RNG) && (cnow.rng != cprev.rng)) || | |
874 | ((arg & TIOCM_DSR) && (cnow.dsr != cprev.dsr)) || | |
875 | ((arg & TIOCM_CD) && (cnow.dcd != cprev.dcd)) || | |
876 | ((arg & TIOCM_CTS) && (cnow.cts != cprev.cts))) | |
877 | return 0; | |
878 | cprev = cnow; | |
879 | } | |
880 | break; | |
881 | case TIOCGICOUNT: | |
882 | dbg("%s - (%d) TIOCGICOUNT RX=%d, TX=%d", | |
883 | __func__, port->number, | |
884 | tport->tp_icount.rx, tport->tp_icount.tx); | |
885 | if (copy_to_user((void __user *)arg, &tport->tp_icount, | |
886 | sizeof(tport->tp_icount))) | |
887 | return -EFAULT; | |
888 | return 0; | |
1da177e4 | 889 | } |
1da177e4 LT |
890 | return -ENOIOCTLCMD; |
891 | } | |
892 | ||
893 | ||
95da310e AC |
894 | static void ti_set_termios(struct tty_struct *tty, |
895 | struct usb_serial_port *port, struct ktermios *old_termios) | |
1da177e4 LT |
896 | { |
897 | struct ti_port *tport = usb_get_serial_port_data(port); | |
1da177e4 | 898 | struct ti_uart_config *config; |
a30fa793 | 899 | tcflag_t cflag, iflag; |
1da177e4 LT |
900 | int baud; |
901 | int status; | |
902 | int port_number = port->number - port->serial->minor; | |
903 | unsigned int mcr; | |
904 | ||
441b62c1 | 905 | dbg("%s - port %d", __func__, port->number); |
1da177e4 | 906 | |
1da177e4 LT |
907 | cflag = tty->termios->c_cflag; |
908 | iflag = tty->termios->c_iflag; | |
909 | ||
441b62c1 | 910 | dbg("%s - cflag %08x, iflag %08x", __func__, cflag, iflag); |
a30fa793 AC |
911 | dbg("%s - old clfag %08x, old iflag %08x", __func__, |
912 | old_termios->c_cflag, old_termios->c_iflag); | |
1da177e4 LT |
913 | |
914 | if (tport == NULL) | |
915 | return; | |
916 | ||
917 | config = kmalloc(sizeof(*config), GFP_KERNEL); | |
918 | if (!config) { | |
441b62c1 | 919 | dev_err(&port->dev, "%s - out of memory\n", __func__); |
1da177e4 LT |
920 | return; |
921 | } | |
922 | ||
923 | config->wFlags = 0; | |
924 | ||
925 | /* these flags must be set */ | |
926 | config->wFlags |= TI_UART_ENABLE_MS_INTS; | |
927 | config->wFlags |= TI_UART_ENABLE_AUTO_START_DMA; | |
928 | config->bUartMode = (__u8)(tport->tp_uart_mode); | |
929 | ||
930 | switch (cflag & CSIZE) { | |
a30fa793 AC |
931 | case CS5: |
932 | config->bDataBits = TI_UART_5_DATA_BITS; | |
933 | break; | |
934 | case CS6: | |
935 | config->bDataBits = TI_UART_6_DATA_BITS; | |
936 | break; | |
937 | case CS7: | |
938 | config->bDataBits = TI_UART_7_DATA_BITS; | |
939 | break; | |
940 | default: | |
941 | case CS8: | |
942 | config->bDataBits = TI_UART_8_DATA_BITS; | |
943 | break; | |
1da177e4 LT |
944 | } |
945 | ||
537699ef AC |
946 | /* CMSPAR isn't supported by this driver */ |
947 | tty->termios->c_cflag &= ~CMSPAR; | |
948 | ||
1da177e4 LT |
949 | if (cflag & PARENB) { |
950 | if (cflag & PARODD) { | |
951 | config->wFlags |= TI_UART_ENABLE_PARITY_CHECKING; | |
952 | config->bParity = TI_UART_ODD_PARITY; | |
953 | } else { | |
954 | config->wFlags |= TI_UART_ENABLE_PARITY_CHECKING; | |
955 | config->bParity = TI_UART_EVEN_PARITY; | |
956 | } | |
957 | } else { | |
958 | config->wFlags &= ~TI_UART_ENABLE_PARITY_CHECKING; | |
a30fa793 | 959 | config->bParity = TI_UART_NO_PARITY; |
1da177e4 LT |
960 | } |
961 | ||
962 | if (cflag & CSTOPB) | |
963 | config->bStopBits = TI_UART_2_STOP_BITS; | |
964 | else | |
965 | config->bStopBits = TI_UART_1_STOP_BITS; | |
966 | ||
967 | if (cflag & CRTSCTS) { | |
968 | /* RTS flow control must be off to drop RTS for baud rate B0 */ | |
969 | if ((cflag & CBAUD) != B0) | |
970 | config->wFlags |= TI_UART_ENABLE_RTS_IN; | |
971 | config->wFlags |= TI_UART_ENABLE_CTS_OUT; | |
972 | } else { | |
973 | tty->hw_stopped = 0; | |
974 | ti_restart_read(tport, tty); | |
975 | } | |
976 | ||
977 | if (I_IXOFF(tty) || I_IXON(tty)) { | |
978 | config->cXon = START_CHAR(tty); | |
979 | config->cXoff = STOP_CHAR(tty); | |
980 | ||
981 | if (I_IXOFF(tty)) | |
982 | config->wFlags |= TI_UART_ENABLE_X_IN; | |
983 | else | |
984 | ti_restart_read(tport, tty); | |
985 | ||
986 | if (I_IXON(tty)) | |
987 | config->wFlags |= TI_UART_ENABLE_X_OUT; | |
988 | } | |
989 | ||
990 | baud = tty_get_baud_rate(tty); | |
537699ef AC |
991 | if (!baud) |
992 | baud = 9600; | |
1da177e4 LT |
993 | if (tport->tp_tdev->td_is_3410) |
994 | config->wBaudRate = (__u16)((923077 + baud/2) / baud); | |
995 | else | |
996 | config->wBaudRate = (__u16)((461538 + baud/2) / baud); | |
997 | ||
537699ef AC |
998 | /* FIXME: Should calculate resulting baud here and report it back */ |
999 | if ((cflag & CBAUD) != B0) | |
1000 | tty_encode_baud_rate(tty, baud, baud); | |
1001 | ||
1da177e4 | 1002 | dbg("%s - BaudRate=%d, wBaudRate=%d, wFlags=0x%04X, bDataBits=%d, bParity=%d, bStopBits=%d, cXon=%d, cXoff=%d, bUartMode=%d", |
441b62c1 | 1003 | __func__, baud, config->wBaudRate, config->wFlags, config->bDataBits, config->bParity, config->bStopBits, config->cXon, config->cXoff, config->bUartMode); |
1da177e4 LT |
1004 | |
1005 | cpu_to_be16s(&config->wBaudRate); | |
1006 | cpu_to_be16s(&config->wFlags); | |
1007 | ||
1008 | status = ti_command_out_sync(tport->tp_tdev, TI_SET_CONFIG, | |
1009 | (__u8)(TI_UART1_PORT + port_number), 0, (__u8 *)config, | |
1010 | sizeof(*config)); | |
1011 | if (status) | |
a30fa793 AC |
1012 | dev_err(&port->dev, "%s - cannot set config on port %d, %d\n", |
1013 | __func__, port_number, status); | |
1da177e4 LT |
1014 | |
1015 | /* SET_CONFIG asserts RTS and DTR, reset them correctly */ | |
1016 | mcr = tport->tp_shadow_mcr; | |
1017 | /* if baud rate is B0, clear RTS and DTR */ | |
1018 | if ((cflag & CBAUD) == B0) | |
1019 | mcr &= ~(TI_MCR_DTR | TI_MCR_RTS); | |
1020 | status = ti_set_mcr(tport, mcr); | |
1021 | if (status) | |
a30fa793 AC |
1022 | dev_err(&port->dev, |
1023 | "%s - cannot set modem control on port %d, %d\n", | |
1024 | __func__, port_number, status); | |
1da177e4 LT |
1025 | |
1026 | kfree(config); | |
1027 | } | |
1028 | ||
1029 | ||
95da310e | 1030 | static int ti_tiocmget(struct tty_struct *tty, struct file *file) |
1da177e4 | 1031 | { |
95da310e | 1032 | struct usb_serial_port *port = tty->driver_data; |
1da177e4 LT |
1033 | struct ti_port *tport = usb_get_serial_port_data(port); |
1034 | unsigned int result; | |
1035 | unsigned int msr; | |
1036 | unsigned int mcr; | |
04ca89d4 | 1037 | unsigned long flags; |
1da177e4 | 1038 | |
441b62c1 | 1039 | dbg("%s - port %d", __func__, port->number); |
1da177e4 LT |
1040 | |
1041 | if (tport == NULL) | |
1042 | return -ENODEV; | |
1043 | ||
04ca89d4 | 1044 | spin_lock_irqsave(&tport->tp_lock, flags); |
1da177e4 LT |
1045 | msr = tport->tp_msr; |
1046 | mcr = tport->tp_shadow_mcr; | |
04ca89d4 | 1047 | spin_unlock_irqrestore(&tport->tp_lock, flags); |
1da177e4 LT |
1048 | |
1049 | result = ((mcr & TI_MCR_DTR) ? TIOCM_DTR : 0) | |
1050 | | ((mcr & TI_MCR_RTS) ? TIOCM_RTS : 0) | |
1051 | | ((mcr & TI_MCR_LOOP) ? TIOCM_LOOP : 0) | |
1052 | | ((msr & TI_MSR_CTS) ? TIOCM_CTS : 0) | |
1053 | | ((msr & TI_MSR_CD) ? TIOCM_CAR : 0) | |
1054 | | ((msr & TI_MSR_RI) ? TIOCM_RI : 0) | |
1055 | | ((msr & TI_MSR_DSR) ? TIOCM_DSR : 0); | |
1056 | ||
441b62c1 | 1057 | dbg("%s - 0x%04X", __func__, result); |
1da177e4 LT |
1058 | |
1059 | return result; | |
1060 | } | |
1061 | ||
1062 | ||
95da310e | 1063 | static int ti_tiocmset(struct tty_struct *tty, struct file *file, |
1da177e4 LT |
1064 | unsigned int set, unsigned int clear) |
1065 | { | |
95da310e | 1066 | struct usb_serial_port *port = tty->driver_data; |
1da177e4 LT |
1067 | struct ti_port *tport = usb_get_serial_port_data(port); |
1068 | unsigned int mcr; | |
04ca89d4 | 1069 | unsigned long flags; |
1da177e4 | 1070 | |
441b62c1 | 1071 | dbg("%s - port %d", __func__, port->number); |
1da177e4 LT |
1072 | |
1073 | if (tport == NULL) | |
1074 | return -ENODEV; | |
1075 | ||
04ca89d4 | 1076 | spin_lock_irqsave(&tport->tp_lock, flags); |
1da177e4 LT |
1077 | mcr = tport->tp_shadow_mcr; |
1078 | ||
1079 | if (set & TIOCM_RTS) | |
1080 | mcr |= TI_MCR_RTS; | |
1081 | if (set & TIOCM_DTR) | |
1082 | mcr |= TI_MCR_DTR; | |
1083 | if (set & TIOCM_LOOP) | |
1084 | mcr |= TI_MCR_LOOP; | |
1085 | ||
1086 | if (clear & TIOCM_RTS) | |
1087 | mcr &= ~TI_MCR_RTS; | |
1088 | if (clear & TIOCM_DTR) | |
1089 | mcr &= ~TI_MCR_DTR; | |
1090 | if (clear & TIOCM_LOOP) | |
1091 | mcr &= ~TI_MCR_LOOP; | |
04ca89d4 | 1092 | spin_unlock_irqrestore(&tport->tp_lock, flags); |
1da177e4 LT |
1093 | |
1094 | return ti_set_mcr(tport, mcr); | |
1095 | } | |
1096 | ||
1097 | ||
95da310e | 1098 | static void ti_break(struct tty_struct *tty, int break_state) |
1da177e4 | 1099 | { |
95da310e | 1100 | struct usb_serial_port *port = tty->driver_data; |
1da177e4 LT |
1101 | struct ti_port *tport = usb_get_serial_port_data(port); |
1102 | int status; | |
1103 | ||
441b62c1 | 1104 | dbg("%s - state = %d", __func__, break_state); |
1da177e4 LT |
1105 | |
1106 | if (tport == NULL) | |
1107 | return; | |
1108 | ||
1109 | ti_drain(tport, (tport->tp_closing_wait*HZ)/100, 0); | |
1110 | ||
1111 | status = ti_write_byte(tport->tp_tdev, | |
1112 | tport->tp_uart_base_addr + TI_UART_OFFSET_LCR, | |
1113 | TI_LCR_BREAK, break_state == -1 ? TI_LCR_BREAK : 0); | |
1114 | ||
1115 | if (status) | |
441b62c1 | 1116 | dbg("%s - error setting break, %d", __func__, status); |
1da177e4 LT |
1117 | } |
1118 | ||
1119 | ||
7d12e780 | 1120 | static void ti_interrupt_callback(struct urb *urb) |
1da177e4 | 1121 | { |
cdc97792 | 1122 | struct ti_device *tdev = urb->context; |
1da177e4 LT |
1123 | struct usb_serial_port *port; |
1124 | struct usb_serial *serial = tdev->td_serial; | |
1125 | struct ti_port *tport; | |
1126 | struct device *dev = &urb->dev->dev; | |
1127 | unsigned char *data = urb->transfer_buffer; | |
1128 | int length = urb->actual_length; | |
1129 | int port_number; | |
1130 | int function; | |
52171b48 GKH |
1131 | int status = urb->status; |
1132 | int retval; | |
1da177e4 LT |
1133 | __u8 msr; |
1134 | ||
441b62c1 | 1135 | dbg("%s", __func__); |
1da177e4 | 1136 | |
52171b48 | 1137 | switch (status) { |
1da177e4 LT |
1138 | case 0: |
1139 | break; | |
1140 | case -ECONNRESET: | |
1141 | case -ENOENT: | |
1142 | case -ESHUTDOWN: | |
441b62c1 | 1143 | dbg("%s - urb shutting down, %d", __func__, status); |
1da177e4 LT |
1144 | tdev->td_urb_error = 1; |
1145 | return; | |
1146 | default: | |
52171b48 | 1147 | dev_err(dev, "%s - nonzero urb status, %d\n", |
441b62c1 | 1148 | __func__, status); |
1da177e4 LT |
1149 | tdev->td_urb_error = 1; |
1150 | goto exit; | |
1151 | } | |
1152 | ||
1153 | if (length != 2) { | |
441b62c1 | 1154 | dbg("%s - bad packet size, %d", __func__, length); |
1da177e4 LT |
1155 | goto exit; |
1156 | } | |
1157 | ||
1158 | if (data[0] == TI_CODE_HARDWARE_ERROR) { | |
441b62c1 | 1159 | dev_err(dev, "%s - hardware error, %d\n", __func__, data[1]); |
1da177e4 LT |
1160 | goto exit; |
1161 | } | |
1162 | ||
1163 | port_number = TI_GET_PORT_FROM_CODE(data[0]); | |
1164 | function = TI_GET_FUNC_FROM_CODE(data[0]); | |
1165 | ||
a30fa793 AC |
1166 | dbg("%s - port_number %d, function %d, data 0x%02X", |
1167 | __func__, port_number, function, data[1]); | |
1da177e4 LT |
1168 | |
1169 | if (port_number >= serial->num_ports) { | |
a30fa793 AC |
1170 | dev_err(dev, "%s - bad port number, %d\n", |
1171 | __func__, port_number); | |
1da177e4 LT |
1172 | goto exit; |
1173 | } | |
1174 | ||
1175 | port = serial->port[port_number]; | |
1176 | ||
1177 | tport = usb_get_serial_port_data(port); | |
1178 | if (!tport) | |
1179 | goto exit; | |
1180 | ||
1181 | switch (function) { | |
1182 | case TI_CODE_DATA_ERROR: | |
a30fa793 AC |
1183 | dev_err(dev, "%s - DATA ERROR, port %d, data 0x%02X\n", |
1184 | __func__, port_number, data[1]); | |
1da177e4 LT |
1185 | break; |
1186 | ||
1187 | case TI_CODE_MODEM_STATUS: | |
1188 | msr = data[1]; | |
441b62c1 | 1189 | dbg("%s - port %d, msr 0x%02X", __func__, port_number, msr); |
1da177e4 LT |
1190 | ti_handle_new_msr(tport, msr); |
1191 | break; | |
1192 | ||
1193 | default: | |
a30fa793 AC |
1194 | dev_err(dev, "%s - unknown interrupt code, 0x%02X\n", |
1195 | __func__, data[1]); | |
1da177e4 LT |
1196 | break; |
1197 | } | |
1198 | ||
1199 | exit: | |
52171b48 GKH |
1200 | retval = usb_submit_urb(urb, GFP_ATOMIC); |
1201 | if (retval) | |
1202 | dev_err(dev, "%s - resubmit interrupt urb failed, %d\n", | |
441b62c1 | 1203 | __func__, retval); |
1da177e4 LT |
1204 | } |
1205 | ||
1206 | ||
7d12e780 | 1207 | static void ti_bulk_in_callback(struct urb *urb) |
1da177e4 | 1208 | { |
cdc97792 | 1209 | struct ti_port *tport = urb->context; |
1da177e4 LT |
1210 | struct usb_serial_port *port = tport->tp_port; |
1211 | struct device *dev = &urb->dev->dev; | |
52171b48 GKH |
1212 | int status = urb->status; |
1213 | int retval = 0; | |
4a90f09b | 1214 | struct tty_struct *tty; |
1da177e4 | 1215 | |
441b62c1 | 1216 | dbg("%s", __func__); |
1da177e4 | 1217 | |
52171b48 | 1218 | switch (status) { |
1da177e4 LT |
1219 | case 0: |
1220 | break; | |
1221 | case -ECONNRESET: | |
1222 | case -ENOENT: | |
1223 | case -ESHUTDOWN: | |
441b62c1 | 1224 | dbg("%s - urb shutting down, %d", __func__, status); |
1da177e4 LT |
1225 | tport->tp_tdev->td_urb_error = 1; |
1226 | wake_up_interruptible(&tport->tp_write_wait); | |
1227 | return; | |
1228 | default: | |
52171b48 | 1229 | dev_err(dev, "%s - nonzero urb status, %d\n", |
a30fa793 | 1230 | __func__, status); |
1da177e4 LT |
1231 | tport->tp_tdev->td_urb_error = 1; |
1232 | wake_up_interruptible(&tport->tp_write_wait); | |
1233 | } | |
1234 | ||
52171b48 | 1235 | if (status == -EPIPE) |
1da177e4 LT |
1236 | goto exit; |
1237 | ||
52171b48 | 1238 | if (status) { |
441b62c1 | 1239 | dev_err(dev, "%s - stopping read!\n", __func__); |
1da177e4 LT |
1240 | return; |
1241 | } | |
1242 | ||
4a90f09b AC |
1243 | tty = tty_port_tty_get(&port->port); |
1244 | if (tty && urb->actual_length) { | |
441b62c1 | 1245 | usb_serial_debug_data(debug, dev, __func__, |
1da177e4 LT |
1246 | urb->actual_length, urb->transfer_buffer); |
1247 | ||
1248 | if (!tport->tp_is_open) | |
441b62c1 | 1249 | dbg("%s - port closed, dropping data", __func__); |
1da177e4 | 1250 | else |
4a90f09b | 1251 | ti_recv(&urb->dev->dev, tty, |
a30fa793 AC |
1252 | urb->transfer_buffer, |
1253 | urb->actual_length); | |
1da177e4 LT |
1254 | |
1255 | spin_lock(&tport->tp_lock); | |
1256 | tport->tp_icount.rx += urb->actual_length; | |
1257 | spin_unlock(&tport->tp_lock); | |
4a90f09b | 1258 | tty_kref_put(tty); |
1da177e4 LT |
1259 | } |
1260 | ||
1261 | exit: | |
1262 | /* continue to read unless stopping */ | |
1263 | spin_lock(&tport->tp_lock); | |
1264 | if (tport->tp_read_urb_state == TI_READ_URB_RUNNING) { | |
1265 | urb->dev = port->serial->dev; | |
52171b48 | 1266 | retval = usb_submit_urb(urb, GFP_ATOMIC); |
1da177e4 LT |
1267 | } else if (tport->tp_read_urb_state == TI_READ_URB_STOPPING) { |
1268 | tport->tp_read_urb_state = TI_READ_URB_STOPPED; | |
1269 | } | |
1270 | spin_unlock(&tport->tp_lock); | |
52171b48 GKH |
1271 | if (retval) |
1272 | dev_err(dev, "%s - resubmit read urb failed, %d\n", | |
441b62c1 | 1273 | __func__, retval); |
1da177e4 LT |
1274 | } |
1275 | ||
1276 | ||
7d12e780 | 1277 | static void ti_bulk_out_callback(struct urb *urb) |
1da177e4 | 1278 | { |
cdc97792 | 1279 | struct ti_port *tport = urb->context; |
1da177e4 LT |
1280 | struct usb_serial_port *port = tport->tp_port; |
1281 | struct device *dev = &urb->dev->dev; | |
52171b48 | 1282 | int status = urb->status; |
1da177e4 | 1283 | |
441b62c1 | 1284 | dbg("%s - port %d", __func__, port->number); |
1da177e4 LT |
1285 | |
1286 | tport->tp_write_urb_in_use = 0; | |
1287 | ||
52171b48 | 1288 | switch (status) { |
1da177e4 LT |
1289 | case 0: |
1290 | break; | |
1291 | case -ECONNRESET: | |
1292 | case -ENOENT: | |
1293 | case -ESHUTDOWN: | |
441b62c1 | 1294 | dbg("%s - urb shutting down, %d", __func__, status); |
1da177e4 LT |
1295 | tport->tp_tdev->td_urb_error = 1; |
1296 | wake_up_interruptible(&tport->tp_write_wait); | |
1297 | return; | |
1298 | default: | |
52171b48 | 1299 | dev_err(dev, "%s - nonzero urb status, %d\n", |
441b62c1 | 1300 | __func__, status); |
1da177e4 LT |
1301 | tport->tp_tdev->td_urb_error = 1; |
1302 | wake_up_interruptible(&tport->tp_write_wait); | |
1303 | } | |
1304 | ||
1305 | /* send any buffered data */ | |
1306 | ti_send(tport); | |
1307 | } | |
1308 | ||
1309 | ||
1310 | static void ti_recv(struct device *dev, struct tty_struct *tty, | |
1311 | unsigned char *data, int length) | |
1312 | { | |
1313 | int cnt; | |
1314 | ||
1315 | do { | |
33f0f88f AC |
1316 | cnt = tty_buffer_request_room(tty, length); |
1317 | if (cnt < length) { | |
a30fa793 AC |
1318 | dev_err(dev, "%s - dropping data, %d bytes lost\n", |
1319 | __func__, length - cnt); | |
1320 | if (cnt == 0) | |
33f0f88f | 1321 | break; |
1da177e4 | 1322 | } |
33f0f88f AC |
1323 | tty_insert_flip_string(tty, data, cnt); |
1324 | tty_flip_buffer_push(tty); | |
1da177e4 LT |
1325 | data += cnt; |
1326 | length -= cnt; | |
1327 | } while (length > 0); | |
1328 | ||
1da177e4 LT |
1329 | } |
1330 | ||
1331 | ||
1332 | static void ti_send(struct ti_port *tport) | |
1333 | { | |
1334 | int count, result; | |
1335 | struct usb_serial_port *port = tport->tp_port; | |
4a90f09b | 1336 | struct tty_struct *tty = tty_port_tty_get(&port->port); /* FIXME */ |
1da177e4 LT |
1337 | unsigned long flags; |
1338 | ||
1339 | ||
441b62c1 | 1340 | dbg("%s - port %d", __func__, port->number); |
1da177e4 LT |
1341 | |
1342 | spin_lock_irqsave(&tport->tp_lock, flags); | |
1343 | ||
4a90f09b AC |
1344 | if (tport->tp_write_urb_in_use) |
1345 | goto unlock; | |
1da177e4 LT |
1346 | |
1347 | count = ti_buf_get(tport->tp_write_buf, | |
1348 | port->write_urb->transfer_buffer, | |
1349 | port->bulk_out_size); | |
1350 | ||
4a90f09b AC |
1351 | if (count == 0) |
1352 | goto unlock; | |
1da177e4 LT |
1353 | |
1354 | tport->tp_write_urb_in_use = 1; | |
1355 | ||
1356 | spin_unlock_irqrestore(&tport->tp_lock, flags); | |
1357 | ||
a30fa793 AC |
1358 | usb_serial_debug_data(debug, &port->dev, __func__, count, |
1359 | port->write_urb->transfer_buffer); | |
1da177e4 LT |
1360 | |
1361 | usb_fill_bulk_urb(port->write_urb, port->serial->dev, | |
1362 | usb_sndbulkpipe(port->serial->dev, | |
1363 | port->bulk_out_endpointAddress), | |
1364 | port->write_urb->transfer_buffer, count, | |
1365 | ti_bulk_out_callback, tport); | |
1366 | ||
1367 | result = usb_submit_urb(port->write_urb, GFP_ATOMIC); | |
1368 | if (result) { | |
a30fa793 AC |
1369 | dev_err(&port->dev, "%s - submit write urb failed, %d\n", |
1370 | __func__, result); | |
1371 | tport->tp_write_urb_in_use = 0; | |
1da177e4 LT |
1372 | /* TODO: reschedule ti_send */ |
1373 | } else { | |
1374 | spin_lock_irqsave(&tport->tp_lock, flags); | |
1375 | tport->tp_icount.tx += count; | |
1376 | spin_unlock_irqrestore(&tport->tp_lock, flags); | |
1377 | } | |
1378 | ||
1379 | /* more room in the buffer for new writes, wakeup */ | |
1380 | if (tty) | |
1381 | tty_wakeup(tty); | |
4a90f09b | 1382 | tty_kref_put(tty); |
1da177e4 | 1383 | wake_up_interruptible(&tport->tp_write_wait); |
4a90f09b AC |
1384 | return; |
1385 | unlock: | |
1386 | spin_unlock_irqrestore(&tport->tp_lock, flags); | |
1387 | tty_kref_put(tty); | |
1388 | return; | |
1da177e4 LT |
1389 | } |
1390 | ||
1391 | ||
1392 | static int ti_set_mcr(struct ti_port *tport, unsigned int mcr) | |
1393 | { | |
04ca89d4 | 1394 | unsigned long flags; |
1da177e4 LT |
1395 | int status; |
1396 | ||
1397 | status = ti_write_byte(tport->tp_tdev, | |
1398 | tport->tp_uart_base_addr + TI_UART_OFFSET_MCR, | |
1399 | TI_MCR_RTS | TI_MCR_DTR | TI_MCR_LOOP, mcr); | |
1400 | ||
04ca89d4 | 1401 | spin_lock_irqsave(&tport->tp_lock, flags); |
1da177e4 LT |
1402 | if (!status) |
1403 | tport->tp_shadow_mcr = mcr; | |
04ca89d4 | 1404 | spin_unlock_irqrestore(&tport->tp_lock, flags); |
1da177e4 LT |
1405 | |
1406 | return status; | |
1407 | } | |
1408 | ||
1409 | ||
1410 | static int ti_get_lsr(struct ti_port *tport) | |
1411 | { | |
a30fa793 | 1412 | int size, status; |
1da177e4 LT |
1413 | struct ti_device *tdev = tport->tp_tdev; |
1414 | struct usb_serial_port *port = tport->tp_port; | |
1415 | int port_number = port->number - port->serial->minor; | |
1416 | struct ti_port_status *data; | |
1417 | ||
441b62c1 | 1418 | dbg("%s - port %d", __func__, port->number); |
1da177e4 LT |
1419 | |
1420 | size = sizeof(struct ti_port_status); | |
1421 | data = kmalloc(size, GFP_KERNEL); | |
1422 | if (!data) { | |
441b62c1 | 1423 | dev_err(&port->dev, "%s - out of memory\n", __func__); |
1da177e4 LT |
1424 | return -ENOMEM; |
1425 | } | |
1426 | ||
1427 | status = ti_command_in_sync(tdev, TI_GET_PORT_STATUS, | |
1428 | (__u8)(TI_UART1_PORT+port_number), 0, (__u8 *)data, size); | |
1429 | if (status) { | |
a30fa793 AC |
1430 | dev_err(&port->dev, |
1431 | "%s - get port status command failed, %d\n", | |
1432 | __func__, status); | |
1da177e4 LT |
1433 | goto free_data; |
1434 | } | |
1435 | ||
441b62c1 | 1436 | dbg("%s - lsr 0x%02X", __func__, data->bLSR); |
1da177e4 LT |
1437 | |
1438 | tport->tp_lsr = data->bLSR; | |
1439 | ||
1440 | free_data: | |
1441 | kfree(data); | |
1442 | return status; | |
1443 | } | |
1444 | ||
1445 | ||
1446 | static int ti_get_serial_info(struct ti_port *tport, | |
1447 | struct serial_struct __user *ret_arg) | |
1448 | { | |
1449 | struct usb_serial_port *port = tport->tp_port; | |
1450 | struct serial_struct ret_serial; | |
1451 | ||
1452 | if (!ret_arg) | |
1453 | return -EFAULT; | |
1454 | ||
1455 | memset(&ret_serial, 0, sizeof(ret_serial)); | |
1456 | ||
1457 | ret_serial.type = PORT_16550A; | |
1458 | ret_serial.line = port->serial->minor; | |
1459 | ret_serial.port = port->number - port->serial->minor; | |
1460 | ret_serial.flags = tport->tp_flags; | |
1461 | ret_serial.xmit_fifo_size = TI_WRITE_BUF_SIZE; | |
1462 | ret_serial.baud_base = tport->tp_tdev->td_is_3410 ? 921600 : 460800; | |
1463 | ret_serial.closing_wait = tport->tp_closing_wait; | |
1464 | ||
1465 | if (copy_to_user(ret_arg, &ret_serial, sizeof(*ret_arg))) | |
1466 | return -EFAULT; | |
1467 | ||
1468 | return 0; | |
1469 | } | |
1470 | ||
1471 | ||
4a90f09b | 1472 | static int ti_set_serial_info(struct tty_struct *tty, struct ti_port *tport, |
1da177e4 LT |
1473 | struct serial_struct __user *new_arg) |
1474 | { | |
1da177e4 LT |
1475 | struct serial_struct new_serial; |
1476 | ||
1477 | if (copy_from_user(&new_serial, new_arg, sizeof(new_serial))) | |
1478 | return -EFAULT; | |
1479 | ||
1480 | tport->tp_flags = new_serial.flags & TI_SET_SERIAL_FLAGS; | |
4a90f09b | 1481 | tty->low_latency = (tport->tp_flags & ASYNC_LOW_LATENCY) ? 1 : 0; |
1da177e4 LT |
1482 | tport->tp_closing_wait = new_serial.closing_wait; |
1483 | ||
1484 | return 0; | |
1485 | } | |
1486 | ||
1487 | ||
1488 | static void ti_handle_new_msr(struct ti_port *tport, __u8 msr) | |
1489 | { | |
1490 | struct async_icount *icount; | |
1491 | struct tty_struct *tty; | |
1492 | unsigned long flags; | |
1493 | ||
441b62c1 | 1494 | dbg("%s - msr 0x%02X", __func__, msr); |
1da177e4 LT |
1495 | |
1496 | if (msr & TI_MSR_DELTA_MASK) { | |
1497 | spin_lock_irqsave(&tport->tp_lock, flags); | |
1498 | icount = &tport->tp_icount; | |
1499 | if (msr & TI_MSR_DELTA_CTS) | |
1500 | icount->cts++; | |
1501 | if (msr & TI_MSR_DELTA_DSR) | |
1502 | icount->dsr++; | |
1503 | if (msr & TI_MSR_DELTA_CD) | |
1504 | icount->dcd++; | |
1505 | if (msr & TI_MSR_DELTA_RI) | |
1506 | icount->rng++; | |
1507 | wake_up_interruptible(&tport->tp_msr_wait); | |
1508 | spin_unlock_irqrestore(&tport->tp_lock, flags); | |
1509 | } | |
1510 | ||
1511 | tport->tp_msr = msr & TI_MSR_MASK; | |
1512 | ||
1513 | /* handle CTS flow control */ | |
4a90f09b | 1514 | tty = tty_port_tty_get(&tport->tp_port->port); |
1da177e4 LT |
1515 | if (tty && C_CRTSCTS(tty)) { |
1516 | if (msr & TI_MSR_CTS) { | |
1517 | tty->hw_stopped = 0; | |
1518 | tty_wakeup(tty); | |
1519 | } else { | |
1520 | tty->hw_stopped = 1; | |
1521 | } | |
1522 | } | |
4a90f09b | 1523 | tty_kref_put(tty); |
1da177e4 LT |
1524 | } |
1525 | ||
1526 | ||
1527 | static void ti_drain(struct ti_port *tport, unsigned long timeout, int flush) | |
1528 | { | |
1529 | struct ti_device *tdev = tport->tp_tdev; | |
1530 | struct usb_serial_port *port = tport->tp_port; | |
1531 | wait_queue_t wait; | |
1da177e4 | 1532 | |
441b62c1 | 1533 | dbg("%s - port %d", __func__, port->number); |
1da177e4 | 1534 | |
0915f490 | 1535 | spin_lock_irq(&tport->tp_lock); |
1da177e4 LT |
1536 | |
1537 | /* wait for data to drain from the buffer */ | |
1538 | tdev->td_urb_error = 0; | |
1539 | init_waitqueue_entry(&wait, current); | |
1540 | add_wait_queue(&tport->tp_write_wait, &wait); | |
1541 | for (;;) { | |
1542 | set_current_state(TASK_INTERRUPTIBLE); | |
1543 | if (ti_buf_data_avail(tport->tp_write_buf) == 0 | |
1544 | || timeout == 0 || signal_pending(current) | |
1545 | || tdev->td_urb_error | |
0915f490 | 1546 | || port->serial->disconnected) /* disconnect */ |
1da177e4 | 1547 | break; |
0915f490 | 1548 | spin_unlock_irq(&tport->tp_lock); |
1da177e4 | 1549 | timeout = schedule_timeout(timeout); |
0915f490 | 1550 | spin_lock_irq(&tport->tp_lock); |
1da177e4 LT |
1551 | } |
1552 | set_current_state(TASK_RUNNING); | |
1553 | remove_wait_queue(&tport->tp_write_wait, &wait); | |
1554 | ||
1555 | /* flush any remaining data in the buffer */ | |
1556 | if (flush) | |
1557 | ti_buf_clear(tport->tp_write_buf); | |
1558 | ||
0915f490 | 1559 | spin_unlock_irq(&tport->tp_lock); |
1da177e4 | 1560 | |
0915f490 | 1561 | mutex_lock(&port->serial->disc_mutex); |
1da177e4 LT |
1562 | /* wait for data to drain from the device */ |
1563 | /* wait for empty tx register, plus 20 ms */ | |
1564 | timeout += jiffies; | |
1565 | tport->tp_lsr &= ~TI_LSR_TX_EMPTY; | |
1566 | while ((long)(jiffies - timeout) < 0 && !signal_pending(current) | |
1567 | && !(tport->tp_lsr&TI_LSR_TX_EMPTY) && !tdev->td_urb_error | |
0915f490 | 1568 | && !port->serial->disconnected) { |
1da177e4 LT |
1569 | if (ti_get_lsr(tport)) |
1570 | break; | |
0915f490 | 1571 | mutex_unlock(&port->serial->disc_mutex); |
1da177e4 | 1572 | msleep_interruptible(20); |
0915f490 | 1573 | mutex_lock(&port->serial->disc_mutex); |
1da177e4 | 1574 | } |
0915f490 | 1575 | mutex_unlock(&port->serial->disc_mutex); |
1da177e4 LT |
1576 | } |
1577 | ||
1578 | ||
1579 | static void ti_stop_read(struct ti_port *tport, struct tty_struct *tty) | |
1580 | { | |
1581 | unsigned long flags; | |
1582 | ||
1583 | spin_lock_irqsave(&tport->tp_lock, flags); | |
1584 | ||
1585 | if (tport->tp_read_urb_state == TI_READ_URB_RUNNING) | |
1586 | tport->tp_read_urb_state = TI_READ_URB_STOPPING; | |
1587 | ||
1588 | spin_unlock_irqrestore(&tport->tp_lock, flags); | |
1589 | } | |
1590 | ||
1591 | ||
1592 | static int ti_restart_read(struct ti_port *tport, struct tty_struct *tty) | |
1593 | { | |
1594 | struct urb *urb; | |
1595 | int status = 0; | |
1596 | unsigned long flags; | |
1597 | ||
1598 | spin_lock_irqsave(&tport->tp_lock, flags); | |
1599 | ||
1600 | if (tport->tp_read_urb_state == TI_READ_URB_STOPPED) { | |
944dc184 | 1601 | tport->tp_read_urb_state = TI_READ_URB_RUNNING; |
1da177e4 | 1602 | urb = tport->tp_port->read_urb; |
944dc184 | 1603 | spin_unlock_irqrestore(&tport->tp_lock, flags); |
1da177e4 LT |
1604 | urb->complete = ti_bulk_in_callback; |
1605 | urb->context = tport; | |
1606 | urb->dev = tport->tp_port->serial->dev; | |
1607 | status = usb_submit_urb(urb, GFP_KERNEL); | |
944dc184 ON |
1608 | } else { |
1609 | tport->tp_read_urb_state = TI_READ_URB_RUNNING; | |
1610 | spin_unlock_irqrestore(&tport->tp_lock, flags); | |
1da177e4 | 1611 | } |
1da177e4 LT |
1612 | |
1613 | return status; | |
1614 | } | |
1615 | ||
1616 | ||
1617 | static int ti_command_out_sync(struct ti_device *tdev, __u8 command, | |
1618 | __u16 moduleid, __u16 value, __u8 *data, int size) | |
1619 | { | |
1620 | int status; | |
1621 | ||
1622 | status = usb_control_msg(tdev->td_serial->dev, | |
1623 | usb_sndctrlpipe(tdev->td_serial->dev, 0), command, | |
1624 | (USB_TYPE_VENDOR | USB_RECIP_DEVICE | USB_DIR_OUT), | |
1625 | value, moduleid, data, size, 1000); | |
1626 | ||
1627 | if (status == size) | |
1628 | status = 0; | |
1629 | ||
1630 | if (status > 0) | |
1631 | status = -ECOMM; | |
1632 | ||
1633 | return status; | |
1634 | } | |
1635 | ||
1636 | ||
1637 | static int ti_command_in_sync(struct ti_device *tdev, __u8 command, | |
1638 | __u16 moduleid, __u16 value, __u8 *data, int size) | |
1639 | { | |
1640 | int status; | |
1641 | ||
1642 | status = usb_control_msg(tdev->td_serial->dev, | |
1643 | usb_rcvctrlpipe(tdev->td_serial->dev, 0), command, | |
1644 | (USB_TYPE_VENDOR | USB_RECIP_DEVICE | USB_DIR_IN), | |
1645 | value, moduleid, data, size, 1000); | |
1646 | ||
1647 | if (status == size) | |
1648 | status = 0; | |
1649 | ||
1650 | if (status > 0) | |
1651 | status = -ECOMM; | |
1652 | ||
1653 | return status; | |
1654 | } | |
1655 | ||
1656 | ||
1657 | static int ti_write_byte(struct ti_device *tdev, unsigned long addr, | |
1658 | __u8 mask, __u8 byte) | |
1659 | { | |
1660 | int status; | |
1661 | unsigned int size; | |
1662 | struct ti_write_data_bytes *data; | |
1663 | struct device *dev = &tdev->td_serial->dev->dev; | |
1664 | ||
a30fa793 AC |
1665 | dbg("%s - addr 0x%08lX, mask 0x%02X, byte 0x%02X", |
1666 | __func__, addr, mask, byte); | |
1da177e4 LT |
1667 | |
1668 | size = sizeof(struct ti_write_data_bytes) + 2; | |
1669 | data = kmalloc(size, GFP_KERNEL); | |
1670 | if (!data) { | |
441b62c1 | 1671 | dev_err(dev, "%s - out of memory\n", __func__); |
1da177e4 LT |
1672 | return -ENOMEM; |
1673 | } | |
1674 | ||
1675 | data->bAddrType = TI_RW_DATA_ADDR_XDATA; | |
1676 | data->bDataType = TI_RW_DATA_BYTE; | |
1677 | data->bDataCounter = 1; | |
1678 | data->wBaseAddrHi = cpu_to_be16(addr>>16); | |
1679 | data->wBaseAddrLo = cpu_to_be16(addr); | |
1680 | data->bData[0] = mask; | |
1681 | data->bData[1] = byte; | |
1682 | ||
1683 | status = ti_command_out_sync(tdev, TI_WRITE_DATA, TI_RAM_PORT, 0, | |
1684 | (__u8 *)data, size); | |
1685 | ||
1686 | if (status < 0) | |
441b62c1 | 1687 | dev_err(dev, "%s - failed, %d\n", __func__, status); |
1da177e4 LT |
1688 | |
1689 | kfree(data); | |
1690 | ||
1691 | return status; | |
1692 | } | |
1693 | ||
95da310e AC |
1694 | static int ti_do_download(struct usb_device *dev, int pipe, |
1695 | u8 *buffer, int size) | |
1da177e4 | 1696 | { |
1da177e4 | 1697 | int pos; |
95da310e | 1698 | u8 cs = 0; |
1da177e4 | 1699 | int done; |
1da177e4 | 1700 | struct ti_firmware_header *header; |
95da310e AC |
1701 | int status; |
1702 | int len; | |
a30fa793 AC |
1703 | |
1704 | for (pos = sizeof(struct ti_firmware_header); pos < size; pos++) | |
1da177e4 LT |
1705 | cs = (__u8)(cs + buffer[pos]); |
1706 | ||
1707 | header = (struct ti_firmware_header *)buffer; | |
a30fa793 | 1708 | header->wLength = cpu_to_le16((__u16)(size |
95da310e | 1709 | - sizeof(struct ti_firmware_header))); |
1da177e4 LT |
1710 | header->bCheckSum = cs; |
1711 | ||
441b62c1 | 1712 | dbg("%s - downloading firmware", __func__); |
95da310e AC |
1713 | for (pos = 0; pos < size; pos += done) { |
1714 | len = min(size - pos, TI_DOWNLOAD_MAX_PACKET_SIZE); | |
1715 | status = usb_bulk_msg(dev, pipe, buffer + pos, len, | |
1716 | &done, 1000); | |
1da177e4 LT |
1717 | if (status) |
1718 | break; | |
1719 | } | |
95da310e AC |
1720 | return status; |
1721 | } | |
1da177e4 | 1722 | |
95da310e AC |
1723 | static int ti_download_firmware(struct ti_device *tdev, int type) |
1724 | { | |
1725 | int status = -ENOMEM; | |
1726 | int buffer_size; | |
1727 | __u8 *buffer; | |
1728 | struct usb_device *dev = tdev->td_serial->dev; | |
1729 | unsigned int pipe = usb_sndbulkpipe(dev, | |
1730 | tdev->td_serial->port[0]->bulk_out_endpointAddress); | |
1731 | const struct firmware *fw_p; | |
1732 | char buf[32]; | |
1733 | sprintf(buf, "ti_usb-%d.bin", type); | |
1da177e4 | 1734 | |
95da310e AC |
1735 | if (request_firmware(&fw_p, buf, &dev->dev)) { |
1736 | dev_err(&dev->dev, "%s - firmware not found\n", __func__); | |
1737 | return -ENOENT; | |
1738 | } | |
1739 | if (fw_p->size > TI_FIRMWARE_BUF_SIZE) { | |
1740 | dev_err(&dev->dev, "%s - firmware too large\n", __func__); | |
1741 | return -ENOENT; | |
1742 | } | |
1743 | ||
1744 | buffer_size = TI_FIRMWARE_BUF_SIZE + sizeof(struct ti_firmware_header); | |
1745 | buffer = kmalloc(buffer_size, GFP_KERNEL); | |
1746 | if (buffer) { | |
1747 | memcpy(buffer, fw_p->data, fw_p->size); | |
1748 | memset(buffer + fw_p->size, 0xff, buffer_size - fw_p->size); | |
2bcbe4c1 | 1749 | status = ti_do_download(dev, pipe, buffer, fw_p->size); |
95da310e AC |
1750 | kfree(buffer); |
1751 | } | |
1752 | release_firmware(fw_p); | |
1da177e4 | 1753 | if (status) { |
a30fa793 AC |
1754 | dev_err(&dev->dev, "%s - error downloading firmware, %d\n", |
1755 | __func__, status); | |
1da177e4 LT |
1756 | return status; |
1757 | } | |
1758 | ||
441b62c1 | 1759 | dbg("%s - download successful", __func__); |
1da177e4 LT |
1760 | |
1761 | return 0; | |
1762 | } | |
1763 | ||
1764 | ||
1765 | /* Circular Buffer Functions */ | |
1766 | ||
1767 | /* | |
1768 | * ti_buf_alloc | |
1769 | * | |
1770 | * Allocate a circular buffer and all associated memory. | |
1771 | */ | |
1772 | ||
1773 | static struct circ_buf *ti_buf_alloc(void) | |
1774 | { | |
1775 | struct circ_buf *cb; | |
1776 | ||
5cbded58 | 1777 | cb = kmalloc(sizeof(struct circ_buf), GFP_KERNEL); |
1da177e4 LT |
1778 | if (cb == NULL) |
1779 | return NULL; | |
1780 | ||
1781 | cb->buf = kmalloc(TI_WRITE_BUF_SIZE, GFP_KERNEL); | |
1782 | if (cb->buf == NULL) { | |
1783 | kfree(cb); | |
1784 | return NULL; | |
1785 | } | |
1786 | ||
1787 | ti_buf_clear(cb); | |
1788 | ||
1789 | return cb; | |
1790 | } | |
1791 | ||
1792 | ||
1793 | /* | |
1794 | * ti_buf_free | |
1795 | * | |
1796 | * Free the buffer and all associated memory. | |
1797 | */ | |
1798 | ||
1799 | static void ti_buf_free(struct circ_buf *cb) | |
1800 | { | |
1801 | kfree(cb->buf); | |
1802 | kfree(cb); | |
1803 | } | |
1804 | ||
1805 | ||
1806 | /* | |
1807 | * ti_buf_clear | |
1808 | * | |
1809 | * Clear out all data in the circular buffer. | |
1810 | */ | |
1811 | ||
1812 | static void ti_buf_clear(struct circ_buf *cb) | |
1813 | { | |
1814 | cb->head = cb->tail = 0; | |
1815 | } | |
1816 | ||
1817 | ||
1818 | /* | |
1819 | * ti_buf_data_avail | |
1820 | * | |
1821 | * Return the number of bytes of data available in the circular | |
1822 | * buffer. | |
1823 | */ | |
1824 | ||
1825 | static int ti_buf_data_avail(struct circ_buf *cb) | |
1826 | { | |
a30fa793 | 1827 | return CIRC_CNT(cb->head, cb->tail, TI_WRITE_BUF_SIZE); |
1da177e4 LT |
1828 | } |
1829 | ||
1830 | ||
1831 | /* | |
1832 | * ti_buf_space_avail | |
1833 | * | |
1834 | * Return the number of bytes of space available in the circular | |
1835 | * buffer. | |
1836 | */ | |
1837 | ||
1838 | static int ti_buf_space_avail(struct circ_buf *cb) | |
1839 | { | |
a30fa793 | 1840 | return CIRC_SPACE(cb->head, cb->tail, TI_WRITE_BUF_SIZE); |
1da177e4 LT |
1841 | } |
1842 | ||
1843 | ||
1844 | /* | |
1845 | * ti_buf_put | |
1846 | * | |
1847 | * Copy data data from a user buffer and put it into the circular buffer. | |
1848 | * Restrict to the amount of space available. | |
1849 | * | |
1850 | * Return the number of bytes copied. | |
1851 | */ | |
1852 | ||
1853 | static int ti_buf_put(struct circ_buf *cb, const char *buf, int count) | |
1854 | { | |
1855 | int c, ret = 0; | |
1856 | ||
1857 | while (1) { | |
1858 | c = CIRC_SPACE_TO_END(cb->head, cb->tail, TI_WRITE_BUF_SIZE); | |
1859 | if (count < c) | |
1860 | c = count; | |
1861 | if (c <= 0) | |
1862 | break; | |
1863 | memcpy(cb->buf + cb->head, buf, c); | |
1864 | cb->head = (cb->head + c) & (TI_WRITE_BUF_SIZE-1); | |
1865 | buf += c; | |
1866 | count -= c; | |
1867 | ret += c; | |
1868 | } | |
1869 | ||
1870 | return ret; | |
1871 | } | |
1872 | ||
1873 | ||
1874 | /* | |
1875 | * ti_buf_get | |
1876 | * | |
1877 | * Get data from the circular buffer and copy to the given buffer. | |
1878 | * Restrict to the amount of data available. | |
1879 | * | |
1880 | * Return the number of bytes copied. | |
1881 | */ | |
1882 | ||
1883 | static int ti_buf_get(struct circ_buf *cb, char *buf, int count) | |
1884 | { | |
1885 | int c, ret = 0; | |
1886 | ||
1887 | while (1) { | |
1888 | c = CIRC_CNT_TO_END(cb->head, cb->tail, TI_WRITE_BUF_SIZE); | |
1889 | if (count < c) | |
1890 | c = count; | |
1891 | if (c <= 0) | |
1892 | break; | |
1893 | memcpy(buf, cb->buf + cb->tail, c); | |
1894 | cb->tail = (cb->tail + c) & (TI_WRITE_BUF_SIZE-1); | |
1895 | buf += c; | |
1896 | count -= c; | |
1897 | ret += c; | |
1898 | } | |
1899 | ||
1900 | return ret; | |
1901 | } |