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>. | |
1da177e4 LT |
19 | */ |
20 | ||
1da177e4 LT |
21 | #include <linux/kernel.h> |
22 | #include <linux/errno.h> | |
95da310e | 23 | #include <linux/firmware.h> |
1da177e4 LT |
24 | #include <linux/init.h> |
25 | #include <linux/slab.h> | |
26 | #include <linux/tty.h> | |
27 | #include <linux/tty_driver.h> | |
28 | #include <linux/tty_flip.h> | |
29 | #include <linux/module.h> | |
30 | #include <linux/spinlock.h> | |
31 | #include <linux/ioctl.h> | |
32 | #include <linux/serial.h> | |
33 | #include <linux/circ_buf.h> | |
9da0068a | 34 | #include <linux/mutex.h> |
a30fa793 | 35 | #include <linux/uaccess.h> |
1da177e4 | 36 | #include <linux/usb.h> |
a969888c | 37 | #include <linux/usb/serial.h> |
1da177e4 | 38 | |
1da177e4 | 39 | #include "ti_usb_3410_5052.h" |
1da177e4 LT |
40 | |
41 | /* Defines */ | |
42 | ||
43 | #define TI_DRIVER_VERSION "v0.9" | |
44 | #define TI_DRIVER_AUTHOR "Al Borchers <alborchers@steinerpoint.com>" | |
45 | #define TI_DRIVER_DESC "TI USB 3410/5052 Serial Driver" | |
46 | ||
47 | #define TI_FIRMWARE_BUF_SIZE 16284 | |
48 | ||
49 | #define TI_WRITE_BUF_SIZE 1024 | |
50 | ||
51 | #define TI_TRANSFER_TIMEOUT 2 | |
52 | ||
53 | #define TI_DEFAULT_LOW_LATENCY 0 | |
54 | #define TI_DEFAULT_CLOSING_WAIT 4000 /* in .01 secs */ | |
55 | ||
56 | /* supported setserial flags */ | |
57 | #define TI_SET_SERIAL_FLAGS (ASYNC_LOW_LATENCY) | |
58 | ||
59 | /* read urb states */ | |
60 | #define TI_READ_URB_RUNNING 0 | |
61 | #define TI_READ_URB_STOPPING 1 | |
62 | #define TI_READ_URB_STOPPED 2 | |
63 | ||
64 | #define TI_EXTRA_VID_PID_COUNT 5 | |
65 | ||
66 | ||
67 | /* Structures */ | |
68 | ||
69 | struct ti_port { | |
70 | int tp_is_open; | |
71 | __u8 tp_msr; | |
72 | __u8 tp_lsr; | |
73 | __u8 tp_shadow_mcr; | |
74 | __u8 tp_uart_mode; /* 232 or 485 modes */ | |
75 | unsigned int tp_uart_base_addr; | |
76 | int tp_flags; | |
77 | int tp_closing_wait;/* in .01 secs */ | |
78 | struct async_icount tp_icount; | |
79 | wait_queue_head_t tp_msr_wait; /* wait for msr change */ | |
80 | wait_queue_head_t tp_write_wait; | |
81 | struct ti_device *tp_tdev; | |
82 | struct usb_serial_port *tp_port; | |
83 | spinlock_t tp_lock; | |
84 | int tp_read_urb_state; | |
85 | int tp_write_urb_in_use; | |
86 | struct circ_buf *tp_write_buf; | |
87 | }; | |
88 | ||
89 | struct ti_device { | |
9da0068a | 90 | struct mutex td_open_close_lock; |
1da177e4 LT |
91 | int td_open_port_count; |
92 | struct usb_serial *td_serial; | |
93 | int td_is_3410; | |
94 | int td_urb_error; | |
95 | }; | |
96 | ||
97 | ||
98 | /* Function Declarations */ | |
99 | ||
100 | static int ti_startup(struct usb_serial *serial); | |
101 | static void ti_shutdown(struct usb_serial *serial); | |
95da310e | 102 | static int ti_open(struct tty_struct *tty, struct usb_serial_port *port, |
a30fa793 | 103 | struct file *file); |
95da310e | 104 | static void ti_close(struct tty_struct *tty, struct usb_serial_port *port, |
a30fa793 | 105 | struct file *file); |
95da310e | 106 | static int ti_write(struct tty_struct *tty, struct usb_serial_port *port, |
a30fa793 | 107 | const unsigned char *data, int count); |
95da310e AC |
108 | static int ti_write_room(struct tty_struct *tty); |
109 | static int ti_chars_in_buffer(struct tty_struct *tty); | |
110 | static void ti_throttle(struct tty_struct *tty); | |
111 | static void ti_unthrottle(struct tty_struct *tty); | |
a30fa793 AC |
112 | static int ti_ioctl(struct tty_struct *tty, struct file *file, |
113 | unsigned int cmd, unsigned long arg); | |
114 | static void ti_set_termios(struct tty_struct *tty, | |
115 | struct usb_serial_port *port, struct ktermios *old_termios); | |
95da310e AC |
116 | static int ti_tiocmget(struct tty_struct *tty, struct file *file); |
117 | static int ti_tiocmset(struct tty_struct *tty, struct file *file, | |
a30fa793 | 118 | unsigned int set, unsigned int clear); |
95da310e | 119 | static void ti_break(struct tty_struct *tty, int break_state); |
7d12e780 DH |
120 | static void ti_interrupt_callback(struct urb *urb); |
121 | static void ti_bulk_in_callback(struct urb *urb); | |
122 | static void ti_bulk_out_callback(struct urb *urb); | |
1da177e4 LT |
123 | |
124 | static void ti_recv(struct device *dev, struct tty_struct *tty, | |
125 | unsigned char *data, int length); | |
126 | static void ti_send(struct ti_port *tport); | |
127 | static int ti_set_mcr(struct ti_port *tport, unsigned int mcr); | |
128 | static int ti_get_lsr(struct ti_port *tport); | |
129 | static int ti_get_serial_info(struct ti_port *tport, | |
130 | struct serial_struct __user *ret_arg); | |
4a90f09b | 131 | static int ti_set_serial_info(struct tty_struct *tty, struct ti_port *tport, |
1da177e4 LT |
132 | struct serial_struct __user *new_arg); |
133 | static void ti_handle_new_msr(struct ti_port *tport, __u8 msr); | |
134 | ||
135 | static void ti_drain(struct ti_port *tport, unsigned long timeout, int flush); | |
136 | ||
137 | static void ti_stop_read(struct ti_port *tport, struct tty_struct *tty); | |
138 | static int ti_restart_read(struct ti_port *tport, struct tty_struct *tty); | |
139 | ||
140 | static int ti_command_out_sync(struct ti_device *tdev, __u8 command, | |
141 | __u16 moduleid, __u16 value, __u8 *data, int size); | |
142 | static int ti_command_in_sync(struct ti_device *tdev, __u8 command, | |
143 | __u16 moduleid, __u16 value, __u8 *data, int size); | |
144 | ||
145 | static int ti_write_byte(struct ti_device *tdev, unsigned long addr, | |
146 | __u8 mask, __u8 byte); | |
147 | ||
05a3d905 | 148 | static int ti_download_firmware(struct ti_device *tdev); |
1da177e4 LT |
149 | |
150 | /* circular buffer */ | |
151 | static struct circ_buf *ti_buf_alloc(void); | |
152 | static void ti_buf_free(struct circ_buf *cb); | |
153 | static void ti_buf_clear(struct circ_buf *cb); | |
154 | static int ti_buf_data_avail(struct circ_buf *cb); | |
155 | static int ti_buf_space_avail(struct circ_buf *cb); | |
156 | static int ti_buf_put(struct circ_buf *cb, const char *buf, int count); | |
157 | static int ti_buf_get(struct circ_buf *cb, char *buf, int count); | |
158 | ||
159 | ||
160 | /* Data */ | |
161 | ||
162 | /* module parameters */ | |
163 | static int debug; | |
164 | static int low_latency = TI_DEFAULT_LOW_LATENCY; | |
165 | static int closing_wait = TI_DEFAULT_CLOSING_WAIT; | |
166 | static ushort vendor_3410[TI_EXTRA_VID_PID_COUNT]; | |
64a6f950 | 167 | static unsigned int vendor_3410_count; |
1da177e4 | 168 | static ushort product_3410[TI_EXTRA_VID_PID_COUNT]; |
64a6f950 | 169 | static unsigned int product_3410_count; |
1da177e4 | 170 | static ushort vendor_5052[TI_EXTRA_VID_PID_COUNT]; |
64a6f950 | 171 | static unsigned int vendor_5052_count; |
1da177e4 | 172 | static ushort product_5052[TI_EXTRA_VID_PID_COUNT]; |
64a6f950 | 173 | static unsigned int product_5052_count; |
1da177e4 LT |
174 | |
175 | /* supported devices */ | |
176 | /* the array dimension is the number of default entries plus */ | |
177 | /* TI_EXTRA_VID_PID_COUNT user defined entries plus 1 terminating */ | |
178 | /* null entry */ | |
cb7a7c6a | 179 | static struct usb_device_id ti_id_table_3410[7+TI_EXTRA_VID_PID_COUNT+1] = { |
1da177e4 | 180 | { USB_DEVICE(TI_VENDOR_ID, TI_3410_PRODUCT_ID) }, |
1f54a6ae | 181 | { USB_DEVICE(TI_VENDOR_ID, TI_3410_EZ430_ID) }, |
cb7a7c6a CA |
182 | { USB_DEVICE(MTS_VENDOR_ID, MTS_GSM_NO_FW_PRODUCT_ID) }, |
183 | { USB_DEVICE(MTS_VENDOR_ID, MTS_CDMA_NO_FW_PRODUCT_ID) }, | |
184 | { USB_DEVICE(MTS_VENDOR_ID, MTS_CDMA_PRODUCT_ID) }, | |
185 | { USB_DEVICE(MTS_VENDOR_ID, MTS_GSM_PRODUCT_ID) }, | |
186 | { USB_DEVICE(MTS_VENDOR_ID, MTS_EDGE_PRODUCT_ID) }, | |
1da177e4 LT |
187 | }; |
188 | ||
189 | static struct usb_device_id ti_id_table_5052[4+TI_EXTRA_VID_PID_COUNT+1] = { | |
190 | { USB_DEVICE(TI_VENDOR_ID, TI_5052_BOOT_PRODUCT_ID) }, | |
191 | { USB_DEVICE(TI_VENDOR_ID, TI_5152_BOOT_PRODUCT_ID) }, | |
192 | { USB_DEVICE(TI_VENDOR_ID, TI_5052_EEPROM_PRODUCT_ID) }, | |
193 | { USB_DEVICE(TI_VENDOR_ID, TI_5052_FIRMWARE_PRODUCT_ID) }, | |
194 | }; | |
195 | ||
05a3d905 | 196 | static struct usb_device_id ti_id_table_combined[6+2*TI_EXTRA_VID_PID_COUNT+1] = { |
1da177e4 | 197 | { USB_DEVICE(TI_VENDOR_ID, TI_3410_PRODUCT_ID) }, |
1f54a6ae | 198 | { USB_DEVICE(TI_VENDOR_ID, TI_3410_EZ430_ID) }, |
cb7a7c6a CA |
199 | { USB_DEVICE(MTS_VENDOR_ID, MTS_GSM_NO_FW_PRODUCT_ID) }, |
200 | { USB_DEVICE(MTS_VENDOR_ID, MTS_CDMA_NO_FW_PRODUCT_ID) }, | |
201 | { USB_DEVICE(MTS_VENDOR_ID, MTS_CDMA_PRODUCT_ID) }, | |
202 | { USB_DEVICE(MTS_VENDOR_ID, MTS_GSM_PRODUCT_ID) }, | |
203 | { USB_DEVICE(MTS_VENDOR_ID, MTS_EDGE_PRODUCT_ID) }, | |
1da177e4 LT |
204 | { USB_DEVICE(TI_VENDOR_ID, TI_5052_BOOT_PRODUCT_ID) }, |
205 | { USB_DEVICE(TI_VENDOR_ID, TI_5152_BOOT_PRODUCT_ID) }, | |
206 | { USB_DEVICE(TI_VENDOR_ID, TI_5052_EEPROM_PRODUCT_ID) }, | |
207 | { USB_DEVICE(TI_VENDOR_ID, TI_5052_FIRMWARE_PRODUCT_ID) }, | |
208 | { } | |
209 | }; | |
210 | ||
211 | static struct usb_driver ti_usb_driver = { | |
1da177e4 LT |
212 | .name = "ti_usb_3410_5052", |
213 | .probe = usb_serial_probe, | |
214 | .disconnect = usb_serial_disconnect, | |
215 | .id_table = ti_id_table_combined, | |
ba9dc657 | 216 | .no_dynamic_id = 1, |
1da177e4 LT |
217 | }; |
218 | ||
ea65370d | 219 | static struct usb_serial_driver ti_1port_device = { |
18fcac35 | 220 | .driver = { |
269bda1c GKH |
221 | .owner = THIS_MODULE, |
222 | .name = "ti_usb_3410_5052_1", | |
18fcac35 | 223 | }, |
269bda1c | 224 | .description = "TI USB 3410 1 port adapter", |
d9b1b787 | 225 | .usb_driver = &ti_usb_driver, |
1da177e4 | 226 | .id_table = ti_id_table_3410, |
1da177e4 LT |
227 | .num_ports = 1, |
228 | .attach = ti_startup, | |
229 | .shutdown = ti_shutdown, | |
230 | .open = ti_open, | |
231 | .close = ti_close, | |
232 | .write = ti_write, | |
233 | .write_room = ti_write_room, | |
234 | .chars_in_buffer = ti_chars_in_buffer, | |
235 | .throttle = ti_throttle, | |
236 | .unthrottle = ti_unthrottle, | |
237 | .ioctl = ti_ioctl, | |
238 | .set_termios = ti_set_termios, | |
239 | .tiocmget = ti_tiocmget, | |
240 | .tiocmset = ti_tiocmset, | |
241 | .break_ctl = ti_break, | |
242 | .read_int_callback = ti_interrupt_callback, | |
243 | .read_bulk_callback = ti_bulk_in_callback, | |
244 | .write_bulk_callback = ti_bulk_out_callback, | |
245 | }; | |
246 | ||
ea65370d | 247 | static struct usb_serial_driver ti_2port_device = { |
18fcac35 | 248 | .driver = { |
269bda1c GKH |
249 | .owner = THIS_MODULE, |
250 | .name = "ti_usb_3410_5052_2", | |
18fcac35 | 251 | }, |
269bda1c | 252 | .description = "TI USB 5052 2 port adapter", |
d9b1b787 | 253 | .usb_driver = &ti_usb_driver, |
1da177e4 | 254 | .id_table = ti_id_table_5052, |
1da177e4 LT |
255 | .num_ports = 2, |
256 | .attach = ti_startup, | |
257 | .shutdown = ti_shutdown, | |
258 | .open = ti_open, | |
259 | .close = ti_close, | |
260 | .write = ti_write, | |
261 | .write_room = ti_write_room, | |
262 | .chars_in_buffer = ti_chars_in_buffer, | |
263 | .throttle = ti_throttle, | |
264 | .unthrottle = ti_unthrottle, | |
265 | .ioctl = ti_ioctl, | |
266 | .set_termios = ti_set_termios, | |
267 | .tiocmget = ti_tiocmget, | |
268 | .tiocmset = ti_tiocmset, | |
269 | .break_ctl = ti_break, | |
270 | .read_int_callback = ti_interrupt_callback, | |
271 | .read_bulk_callback = ti_bulk_in_callback, | |
272 | .write_bulk_callback = ti_bulk_out_callback, | |
273 | }; | |
274 | ||
275 | ||
276 | /* Module */ | |
277 | ||
278 | MODULE_AUTHOR(TI_DRIVER_AUTHOR); | |
279 | MODULE_DESCRIPTION(TI_DRIVER_DESC); | |
280 | MODULE_VERSION(TI_DRIVER_VERSION); | |
281 | MODULE_LICENSE("GPL"); | |
282 | ||
5f24e2d6 DW |
283 | MODULE_FIRMWARE("ti_3410.fw"); |
284 | MODULE_FIRMWARE("ti_5052.fw"); | |
7df52316 CA |
285 | MODULE_FIRMWARE("mts_cdma.fw"); |
286 | MODULE_FIRMWARE("mts_gsm.fw"); | |
287 | MODULE_FIRMWARE("mts_edge.fw"); | |
5f24e2d6 | 288 | |
1da177e4 LT |
289 | module_param(debug, bool, S_IRUGO | S_IWUSR); |
290 | MODULE_PARM_DESC(debug, "Enable debugging, 0=no, 1=yes"); | |
291 | ||
292 | module_param(low_latency, bool, S_IRUGO | S_IWUSR); | |
a30fa793 AC |
293 | MODULE_PARM_DESC(low_latency, |
294 | "TTY low_latency flag, 0=off, 1=on, default is off"); | |
1da177e4 LT |
295 | |
296 | module_param(closing_wait, int, S_IRUGO | S_IWUSR); | |
a30fa793 AC |
297 | MODULE_PARM_DESC(closing_wait, |
298 | "Maximum wait for data to drain in close, in .01 secs, default is 4000"); | |
1da177e4 LT |
299 | |
300 | module_param_array(vendor_3410, ushort, &vendor_3410_count, S_IRUGO); | |
a30fa793 AC |
301 | MODULE_PARM_DESC(vendor_3410, |
302 | "Vendor ids for 3410 based devices, 1-5 short integers"); | |
1da177e4 | 303 | module_param_array(product_3410, ushort, &product_3410_count, S_IRUGO); |
a30fa793 AC |
304 | MODULE_PARM_DESC(product_3410, |
305 | "Product ids for 3410 based devices, 1-5 short integers"); | |
1da177e4 | 306 | module_param_array(vendor_5052, ushort, &vendor_5052_count, S_IRUGO); |
a30fa793 AC |
307 | MODULE_PARM_DESC(vendor_5052, |
308 | "Vendor ids for 5052 based devices, 1-5 short integers"); | |
1da177e4 | 309 | module_param_array(product_5052, ushort, &product_5052_count, S_IRUGO); |
a30fa793 AC |
310 | MODULE_PARM_DESC(product_5052, |
311 | "Product ids for 5052 based devices, 1-5 short integers"); | |
1da177e4 LT |
312 | |
313 | MODULE_DEVICE_TABLE(usb, ti_id_table_combined); | |
314 | ||
315 | ||
316 | /* Functions */ | |
317 | ||
318 | static int __init ti_init(void) | |
319 | { | |
05a3d905 | 320 | int i, j, c; |
1da177e4 LT |
321 | int ret; |
322 | ||
1da177e4 | 323 | /* insert extra vendor and product ids */ |
05a3d905 | 324 | c = ARRAY_SIZE(ti_id_table_combined) - 2 * TI_EXTRA_VID_PID_COUNT - 1; |
52950ed4 | 325 | j = ARRAY_SIZE(ti_id_table_3410) - TI_EXTRA_VID_PID_COUNT - 1; |
05a3d905 | 326 | for (i = 0; i < min(vendor_3410_count, product_3410_count); i++, j++, c++) { |
1da177e4 LT |
327 | ti_id_table_3410[j].idVendor = vendor_3410[i]; |
328 | ti_id_table_3410[j].idProduct = product_3410[i]; | |
329 | ti_id_table_3410[j].match_flags = USB_DEVICE_ID_MATCH_DEVICE; | |
05a3d905 CA |
330 | ti_id_table_combined[c].idVendor = vendor_3410[i]; |
331 | ti_id_table_combined[c].idProduct = product_3410[i]; | |
332 | ti_id_table_combined[c].match_flags = USB_DEVICE_ID_MATCH_DEVICE; | |
1da177e4 | 333 | } |
52950ed4 | 334 | j = ARRAY_SIZE(ti_id_table_5052) - TI_EXTRA_VID_PID_COUNT - 1; |
05a3d905 | 335 | for (i = 0; i < min(vendor_5052_count, product_5052_count); i++, j++, c++) { |
1da177e4 LT |
336 | ti_id_table_5052[j].idVendor = vendor_5052[i]; |
337 | ti_id_table_5052[j].idProduct = product_5052[i]; | |
338 | ti_id_table_5052[j].match_flags = USB_DEVICE_ID_MATCH_DEVICE; | |
05a3d905 CA |
339 | ti_id_table_combined[c].idVendor = vendor_5052[i]; |
340 | ti_id_table_combined[c].idProduct = product_5052[i]; | |
341 | ti_id_table_combined[c].match_flags = USB_DEVICE_ID_MATCH_DEVICE; | |
1da177e4 LT |
342 | } |
343 | ||
344 | ret = usb_serial_register(&ti_1port_device); | |
345 | if (ret) | |
346 | goto failed_1port; | |
347 | ret = usb_serial_register(&ti_2port_device); | |
348 | if (ret) | |
349 | goto failed_2port; | |
350 | ||
351 | ret = usb_register(&ti_usb_driver); | |
352 | if (ret) | |
353 | goto failed_usb; | |
354 | ||
c197a8db GKH |
355 | printk(KERN_INFO KBUILD_MODNAME ": " TI_DRIVER_VERSION ":" |
356 | TI_DRIVER_DESC "\n"); | |
1da177e4 LT |
357 | |
358 | return 0; | |
359 | ||
360 | failed_usb: | |
361 | usb_serial_deregister(&ti_2port_device); | |
362 | failed_2port: | |
363 | usb_serial_deregister(&ti_1port_device); | |
364 | failed_1port: | |
365 | return ret; | |
366 | } | |
367 | ||
368 | ||
369 | static void __exit ti_exit(void) | |
370 | { | |
371 | usb_serial_deregister(&ti_1port_device); | |
372 | usb_serial_deregister(&ti_2port_device); | |
373 | usb_deregister(&ti_usb_driver); | |
374 | } | |
375 | ||
376 | ||
377 | module_init(ti_init); | |
378 | module_exit(ti_exit); | |
379 | ||
380 | ||
381 | static int ti_startup(struct usb_serial *serial) | |
382 | { | |
383 | struct ti_device *tdev; | |
384 | struct ti_port *tport; | |
385 | struct usb_device *dev = serial->dev; | |
386 | int status; | |
387 | int i; | |
388 | ||
389 | ||
390 | dbg("%s - product 0x%4X, num configurations %d, configuration value %d", | |
441b62c1 | 391 | __func__, le16_to_cpu(dev->descriptor.idProduct), |
1da177e4 LT |
392 | dev->descriptor.bNumConfigurations, |
393 | dev->actconfig->desc.bConfigurationValue); | |
394 | ||
395 | /* create device structure */ | |
80b6ca48 | 396 | tdev = kzalloc(sizeof(struct ti_device), GFP_KERNEL); |
1da177e4 | 397 | if (tdev == NULL) { |
441b62c1 | 398 | dev_err(&dev->dev, "%s - out of memory\n", __func__); |
1da177e4 LT |
399 | return -ENOMEM; |
400 | } | |
9da0068a | 401 | mutex_init(&tdev->td_open_close_lock); |
1da177e4 LT |
402 | tdev->td_serial = serial; |
403 | usb_set_serial_data(serial, tdev); | |
404 | ||
405 | /* determine device type */ | |
406 | if (usb_match_id(serial->interface, ti_id_table_3410)) | |
407 | tdev->td_is_3410 = 1; | |
a30fa793 AC |
408 | dbg("%s - device type is %s", __func__, |
409 | tdev->td_is_3410 ? "3410" : "5052"); | |
1da177e4 LT |
410 | |
411 | /* if we have only 1 configuration, download firmware */ | |
412 | if (dev->descriptor.bNumConfigurations == 1) { | |
05a3d905 | 413 | if ((status = ti_download_firmware(tdev)) != 0) |
1da177e4 LT |
414 | goto free_tdev; |
415 | ||
416 | /* 3410 must be reset, 5052 resets itself */ | |
417 | if (tdev->td_is_3410) { | |
418 | msleep_interruptible(100); | |
419 | usb_reset_device(dev); | |
420 | } | |
421 | ||
422 | status = -ENODEV; | |
423 | goto free_tdev; | |
a30fa793 | 424 | } |
1da177e4 | 425 | |
413ba6fb | 426 | /* the second configuration must be set */ |
1da177e4 | 427 | if (dev->actconfig->desc.bConfigurationValue == TI_BOOT_CONFIG) { |
413ba6fb ON |
428 | status = usb_driver_set_configuration(dev, TI_ACTIVE_CONFIG); |
429 | status = status ? status : -ENODEV; | |
1da177e4 LT |
430 | goto free_tdev; |
431 | } | |
432 | ||
433 | /* set up port structures */ | |
434 | for (i = 0; i < serial->num_ports; ++i) { | |
7ac9da10 | 435 | tport = kzalloc(sizeof(struct ti_port), GFP_KERNEL); |
1da177e4 | 436 | if (tport == NULL) { |
441b62c1 | 437 | dev_err(&dev->dev, "%s - out of memory\n", __func__); |
1da177e4 LT |
438 | status = -ENOMEM; |
439 | goto free_tports; | |
440 | } | |
1da177e4 | 441 | spin_lock_init(&tport->tp_lock); |
a30fa793 AC |
442 | tport->tp_uart_base_addr = (i == 0 ? |
443 | TI_UART1_BASE_ADDR : TI_UART2_BASE_ADDR); | |
1da177e4 LT |
444 | tport->tp_flags = low_latency ? ASYNC_LOW_LATENCY : 0; |
445 | tport->tp_closing_wait = closing_wait; | |
446 | init_waitqueue_head(&tport->tp_msr_wait); | |
447 | init_waitqueue_head(&tport->tp_write_wait); | |
448 | tport->tp_write_buf = ti_buf_alloc(); | |
449 | if (tport->tp_write_buf == NULL) { | |
441b62c1 | 450 | dev_err(&dev->dev, "%s - out of memory\n", __func__); |
1da177e4 LT |
451 | kfree(tport); |
452 | status = -ENOMEM; | |
453 | goto free_tports; | |
454 | } | |
455 | tport->tp_port = serial->port[i]; | |
456 | tport->tp_tdev = tdev; | |
457 | usb_set_serial_port_data(serial->port[i], tport); | |
458 | tport->tp_uart_mode = 0; /* default is RS232 */ | |
459 | } | |
a30fa793 | 460 | |
1da177e4 LT |
461 | return 0; |
462 | ||
463 | free_tports: | |
a30fa793 | 464 | for (--i; i >= 0; --i) { |
1da177e4 LT |
465 | tport = usb_get_serial_port_data(serial->port[i]); |
466 | ti_buf_free(tport->tp_write_buf); | |
467 | kfree(tport); | |
468 | usb_set_serial_port_data(serial->port[i], NULL); | |
469 | } | |
470 | free_tdev: | |
471 | kfree(tdev); | |
472 | usb_set_serial_data(serial, NULL); | |
473 | return status; | |
474 | } | |
475 | ||
476 | ||
477 | static void ti_shutdown(struct usb_serial *serial) | |
478 | { | |
479 | int i; | |
480 | struct ti_device *tdev = usb_get_serial_data(serial); | |
481 | struct ti_port *tport; | |
482 | ||
441b62c1 | 483 | dbg("%s", __func__); |
1da177e4 | 484 | |
a30fa793 | 485 | for (i = 0; i < serial->num_ports; ++i) { |
1da177e4 LT |
486 | tport = usb_get_serial_port_data(serial->port[i]); |
487 | if (tport) { | |
488 | ti_buf_free(tport->tp_write_buf); | |
489 | kfree(tport); | |
490 | usb_set_serial_port_data(serial->port[i], NULL); | |
491 | } | |
492 | } | |
493 | ||
1bc3c9e1 | 494 | kfree(tdev); |
1da177e4 LT |
495 | usb_set_serial_data(serial, NULL); |
496 | } | |
497 | ||
498 | ||
95da310e AC |
499 | static int ti_open(struct tty_struct *tty, |
500 | struct usb_serial_port *port, struct file *file) | |
1da177e4 LT |
501 | { |
502 | struct ti_port *tport = usb_get_serial_port_data(port); | |
503 | struct ti_device *tdev; | |
504 | struct usb_device *dev; | |
505 | struct urb *urb; | |
506 | int port_number; | |
507 | int status; | |
a30fa793 AC |
508 | __u16 open_settings = (__u8)(TI_PIPE_MODE_CONTINOUS | |
509 | TI_PIPE_TIMEOUT_ENABLE | | |
1da177e4 LT |
510 | (TI_TRANSFER_TIMEOUT << 2)); |
511 | ||
441b62c1 | 512 | dbg("%s - port %d", __func__, port->number); |
1da177e4 LT |
513 | |
514 | if (tport == NULL) | |
515 | return -ENODEV; | |
516 | ||
517 | dev = port->serial->dev; | |
518 | tdev = tport->tp_tdev; | |
519 | ||
520 | /* only one open on any port on a device at a time */ | |
9da0068a | 521 | if (mutex_lock_interruptible(&tdev->td_open_close_lock)) |
1da177e4 LT |
522 | return -ERESTARTSYS; |
523 | ||
95da310e AC |
524 | if (tty) |
525 | tty->low_latency = | |
526 | (tport->tp_flags & ASYNC_LOW_LATENCY) ? 1 : 0; | |
1da177e4 LT |
527 | |
528 | port_number = port->number - port->serial->minor; | |
529 | ||
530 | memset(&(tport->tp_icount), 0x00, sizeof(tport->tp_icount)); | |
531 | ||
532 | tport->tp_msr = 0; | |
533 | tport->tp_shadow_mcr |= (TI_MCR_RTS | TI_MCR_DTR); | |
534 | ||
535 | /* start interrupt urb the first time a port is opened on this device */ | |
536 | if (tdev->td_open_port_count == 0) { | |
441b62c1 | 537 | dbg("%s - start interrupt in urb", __func__); |
1da177e4 LT |
538 | urb = tdev->td_serial->port[0]->interrupt_in_urb; |
539 | if (!urb) { | |
a30fa793 AC |
540 | dev_err(&port->dev, "%s - no interrupt urb\n", |
541 | __func__); | |
1da177e4 | 542 | status = -EINVAL; |
9da0068a | 543 | goto release_lock; |
1da177e4 LT |
544 | } |
545 | urb->complete = ti_interrupt_callback; | |
546 | urb->context = tdev; | |
547 | urb->dev = dev; | |
548 | status = usb_submit_urb(urb, GFP_KERNEL); | |
549 | if (status) { | |
a30fa793 AC |
550 | dev_err(&port->dev, |
551 | "%s - submit interrupt urb failed, %d\n", | |
552 | __func__, status); | |
9da0068a | 553 | goto release_lock; |
1da177e4 LT |
554 | } |
555 | } | |
556 | ||
95da310e AC |
557 | if (tty) |
558 | ti_set_termios(tty, port, tty->termios); | |
1da177e4 | 559 | |
441b62c1 | 560 | dbg("%s - sending TI_OPEN_PORT", __func__); |
1da177e4 LT |
561 | status = ti_command_out_sync(tdev, TI_OPEN_PORT, |
562 | (__u8)(TI_UART1_PORT + port_number), open_settings, NULL, 0); | |
563 | if (status) { | |
a30fa793 AC |
564 | dev_err(&port->dev, "%s - cannot send open command, %d\n", |
565 | __func__, status); | |
1da177e4 LT |
566 | goto unlink_int_urb; |
567 | } | |
568 | ||
441b62c1 | 569 | dbg("%s - sending TI_START_PORT", __func__); |
1da177e4 LT |
570 | status = ti_command_out_sync(tdev, TI_START_PORT, |
571 | (__u8)(TI_UART1_PORT + port_number), 0, NULL, 0); | |
572 | if (status) { | |
a30fa793 AC |
573 | dev_err(&port->dev, "%s - cannot send start command, %d\n", |
574 | __func__, status); | |
1da177e4 LT |
575 | goto unlink_int_urb; |
576 | } | |
577 | ||
441b62c1 | 578 | dbg("%s - sending TI_PURGE_PORT", __func__); |
1da177e4 LT |
579 | status = ti_command_out_sync(tdev, TI_PURGE_PORT, |
580 | (__u8)(TI_UART1_PORT + port_number), TI_PURGE_INPUT, NULL, 0); | |
581 | if (status) { | |
a30fa793 AC |
582 | dev_err(&port->dev, "%s - cannot clear input buffers, %d\n", |
583 | __func__, status); | |
1da177e4 LT |
584 | goto unlink_int_urb; |
585 | } | |
586 | status = ti_command_out_sync(tdev, TI_PURGE_PORT, | |
587 | (__u8)(TI_UART1_PORT + port_number), TI_PURGE_OUTPUT, NULL, 0); | |
588 | if (status) { | |
a30fa793 AC |
589 | dev_err(&port->dev, "%s - cannot clear output buffers, %d\n", |
590 | __func__, status); | |
1da177e4 LT |
591 | goto unlink_int_urb; |
592 | } | |
593 | ||
594 | /* reset the data toggle on the bulk endpoints to work around bug in | |
595 | * host controllers where things get out of sync some times */ | |
596 | usb_clear_halt(dev, port->write_urb->pipe); | |
597 | usb_clear_halt(dev, port->read_urb->pipe); | |
598 | ||
95da310e AC |
599 | if (tty) |
600 | ti_set_termios(tty, port, tty->termios); | |
1da177e4 | 601 | |
441b62c1 | 602 | dbg("%s - sending TI_OPEN_PORT (2)", __func__); |
1da177e4 LT |
603 | status = ti_command_out_sync(tdev, TI_OPEN_PORT, |
604 | (__u8)(TI_UART1_PORT + port_number), open_settings, NULL, 0); | |
605 | if (status) { | |
a30fa793 AC |
606 | dev_err(&port->dev, "%s - cannot send open command (2), %d\n", |
607 | __func__, status); | |
1da177e4 LT |
608 | goto unlink_int_urb; |
609 | } | |
610 | ||
441b62c1 | 611 | dbg("%s - sending TI_START_PORT (2)", __func__); |
1da177e4 LT |
612 | status = ti_command_out_sync(tdev, TI_START_PORT, |
613 | (__u8)(TI_UART1_PORT + port_number), 0, NULL, 0); | |
614 | if (status) { | |
a30fa793 AC |
615 | dev_err(&port->dev, "%s - cannot send start command (2), %d\n", |
616 | __func__, status); | |
1da177e4 LT |
617 | goto unlink_int_urb; |
618 | } | |
619 | ||
620 | /* start read urb */ | |
441b62c1 | 621 | dbg("%s - start read urb", __func__); |
1da177e4 LT |
622 | urb = port->read_urb; |
623 | if (!urb) { | |
441b62c1 | 624 | dev_err(&port->dev, "%s - no read urb\n", __func__); |
1da177e4 LT |
625 | status = -EINVAL; |
626 | goto unlink_int_urb; | |
627 | } | |
628 | tport->tp_read_urb_state = TI_READ_URB_RUNNING; | |
629 | urb->complete = ti_bulk_in_callback; | |
630 | urb->context = tport; | |
631 | urb->dev = dev; | |
632 | status = usb_submit_urb(urb, GFP_KERNEL); | |
633 | if (status) { | |
a30fa793 AC |
634 | dev_err(&port->dev, "%s - submit read urb failed, %d\n", |
635 | __func__, status); | |
1da177e4 LT |
636 | goto unlink_int_urb; |
637 | } | |
638 | ||
639 | tport->tp_is_open = 1; | |
640 | ++tdev->td_open_port_count; | |
641 | ||
9da0068a | 642 | goto release_lock; |
1da177e4 LT |
643 | |
644 | unlink_int_urb: | |
645 | if (tdev->td_open_port_count == 0) | |
646 | usb_kill_urb(port->serial->port[0]->interrupt_in_urb); | |
9da0068a MK |
647 | release_lock: |
648 | mutex_unlock(&tdev->td_open_close_lock); | |
441b62c1 | 649 | dbg("%s - exit %d", __func__, status); |
1da177e4 LT |
650 | return status; |
651 | } | |
652 | ||
653 | ||
95da310e AC |
654 | static void ti_close(struct tty_struct *tty, struct usb_serial_port *port, |
655 | struct file *file) | |
1da177e4 LT |
656 | { |
657 | struct ti_device *tdev; | |
658 | struct ti_port *tport; | |
659 | int port_number; | |
660 | int status; | |
9da0068a | 661 | int do_unlock; |
1da177e4 | 662 | |
441b62c1 | 663 | dbg("%s - port %d", __func__, port->number); |
a30fa793 | 664 | |
1da177e4 LT |
665 | tdev = usb_get_serial_data(port->serial); |
666 | tport = usb_get_serial_port_data(port); | |
667 | if (tdev == NULL || tport == NULL) | |
668 | return; | |
669 | ||
670 | tport->tp_is_open = 0; | |
671 | ||
672 | ti_drain(tport, (tport->tp_closing_wait*HZ)/100, 1); | |
673 | ||
674 | usb_kill_urb(port->read_urb); | |
675 | usb_kill_urb(port->write_urb); | |
676 | tport->tp_write_urb_in_use = 0; | |
677 | ||
678 | port_number = port->number - port->serial->minor; | |
679 | ||
441b62c1 | 680 | dbg("%s - sending TI_CLOSE_PORT", __func__); |
1da177e4 LT |
681 | status = ti_command_out_sync(tdev, TI_CLOSE_PORT, |
682 | (__u8)(TI_UART1_PORT + port_number), 0, NULL, 0); | |
683 | if (status) | |
a30fa793 AC |
684 | dev_err(&port->dev, |
685 | "%s - cannot send close port command, %d\n" | |
686 | , __func__, status); | |
1da177e4 | 687 | |
9da0068a MK |
688 | /* if mutex_lock is interrupted, continue anyway */ |
689 | do_unlock = !mutex_lock_interruptible(&tdev->td_open_close_lock); | |
1da177e4 LT |
690 | --tport->tp_tdev->td_open_port_count; |
691 | if (tport->tp_tdev->td_open_port_count <= 0) { | |
692 | /* last port is closed, shut down interrupt urb */ | |
693 | usb_kill_urb(port->serial->port[0]->interrupt_in_urb); | |
694 | tport->tp_tdev->td_open_port_count = 0; | |
695 | } | |
9da0068a MK |
696 | if (do_unlock) |
697 | mutex_unlock(&tdev->td_open_close_lock); | |
1da177e4 | 698 | |
441b62c1 | 699 | dbg("%s - exit", __func__); |
1da177e4 LT |
700 | } |
701 | ||
702 | ||
95da310e AC |
703 | static int ti_write(struct tty_struct *tty, struct usb_serial_port *port, |
704 | const unsigned char *data, int count) | |
1da177e4 LT |
705 | { |
706 | struct ti_port *tport = usb_get_serial_port_data(port); | |
707 | unsigned long flags; | |
708 | ||
441b62c1 | 709 | dbg("%s - port %d", __func__, port->number); |
1da177e4 LT |
710 | |
711 | if (count == 0) { | |
441b62c1 | 712 | dbg("%s - write request of 0 bytes", __func__); |
1da177e4 LT |
713 | return 0; |
714 | } | |
715 | ||
716 | if (tport == NULL || !tport->tp_is_open) | |
717 | return -ENODEV; | |
718 | ||
719 | spin_lock_irqsave(&tport->tp_lock, flags); | |
720 | count = ti_buf_put(tport->tp_write_buf, data, count); | |
721 | spin_unlock_irqrestore(&tport->tp_lock, flags); | |
722 | ||
723 | ti_send(tport); | |
724 | ||
725 | return count; | |
726 | } | |
727 | ||
728 | ||
95da310e | 729 | static int ti_write_room(struct tty_struct *tty) |
1da177e4 | 730 | { |
95da310e | 731 | struct usb_serial_port *port = tty->driver_data; |
1da177e4 LT |
732 | struct ti_port *tport = usb_get_serial_port_data(port); |
733 | int room = 0; | |
734 | unsigned long flags; | |
735 | ||
441b62c1 | 736 | dbg("%s - port %d", __func__, port->number); |
1da177e4 LT |
737 | |
738 | if (tport == NULL) | |
739 | return -ENODEV; | |
a30fa793 | 740 | |
1da177e4 LT |
741 | spin_lock_irqsave(&tport->tp_lock, flags); |
742 | room = ti_buf_space_avail(tport->tp_write_buf); | |
743 | spin_unlock_irqrestore(&tport->tp_lock, flags); | |
744 | ||
441b62c1 | 745 | dbg("%s - returns %d", __func__, room); |
1da177e4 LT |
746 | return room; |
747 | } | |
748 | ||
749 | ||
95da310e | 750 | static int ti_chars_in_buffer(struct tty_struct *tty) |
1da177e4 | 751 | { |
95da310e | 752 | struct usb_serial_port *port = tty->driver_data; |
1da177e4 LT |
753 | struct ti_port *tport = usb_get_serial_port_data(port); |
754 | int chars = 0; | |
755 | unsigned long flags; | |
756 | ||
441b62c1 | 757 | dbg("%s - port %d", __func__, port->number); |
1da177e4 LT |
758 | |
759 | if (tport == NULL) | |
760 | return -ENODEV; | |
761 | ||
762 | spin_lock_irqsave(&tport->tp_lock, flags); | |
763 | chars = ti_buf_data_avail(tport->tp_write_buf); | |
764 | spin_unlock_irqrestore(&tport->tp_lock, flags); | |
765 | ||
441b62c1 | 766 | dbg("%s - returns %d", __func__, chars); |
1da177e4 LT |
767 | return chars; |
768 | } | |
769 | ||
770 | ||
95da310e | 771 | static void ti_throttle(struct tty_struct *tty) |
1da177e4 | 772 | { |
95da310e | 773 | struct usb_serial_port *port = tty->driver_data; |
1da177e4 | 774 | struct ti_port *tport = usb_get_serial_port_data(port); |
1da177e4 | 775 | |
441b62c1 | 776 | dbg("%s - port %d", __func__, port->number); |
1da177e4 LT |
777 | |
778 | if (tport == NULL) | |
779 | return; | |
780 | ||
1da177e4 LT |
781 | if (I_IXOFF(tty) || C_CRTSCTS(tty)) |
782 | ti_stop_read(tport, tty); | |
783 | ||
784 | } | |
785 | ||
786 | ||
95da310e | 787 | static void ti_unthrottle(struct tty_struct *tty) |
1da177e4 | 788 | { |
95da310e | 789 | struct usb_serial_port *port = tty->driver_data; |
1da177e4 | 790 | struct ti_port *tport = usb_get_serial_port_data(port); |
1da177e4 LT |
791 | int status; |
792 | ||
441b62c1 | 793 | dbg("%s - port %d", __func__, port->number); |
1da177e4 LT |
794 | |
795 | if (tport == NULL) | |
796 | return; | |
797 | ||
1da177e4 LT |
798 | if (I_IXOFF(tty) || C_CRTSCTS(tty)) { |
799 | status = ti_restart_read(tport, tty); | |
800 | if (status) | |
a30fa793 AC |
801 | dev_err(&port->dev, "%s - cannot restart read, %d\n", |
802 | __func__, status); | |
1da177e4 LT |
803 | } |
804 | } | |
805 | ||
806 | ||
95da310e | 807 | static int ti_ioctl(struct tty_struct *tty, struct file *file, |
1da177e4 LT |
808 | unsigned int cmd, unsigned long arg) |
809 | { | |
95da310e | 810 | struct usb_serial_port *port = tty->driver_data; |
1da177e4 LT |
811 | struct ti_port *tport = usb_get_serial_port_data(port); |
812 | struct async_icount cnow; | |
813 | struct async_icount cprev; | |
814 | ||
441b62c1 | 815 | dbg("%s - port %d, cmd = 0x%04X", __func__, port->number, cmd); |
1da177e4 LT |
816 | |
817 | if (tport == NULL) | |
818 | return -ENODEV; | |
819 | ||
820 | switch (cmd) { | |
a30fa793 AC |
821 | case TIOCGSERIAL: |
822 | dbg("%s - (%d) TIOCGSERIAL", __func__, port->number); | |
823 | return ti_get_serial_info(tport, | |
824 | (struct serial_struct __user *)arg); | |
825 | case TIOCSSERIAL: | |
826 | dbg("%s - (%d) TIOCSSERIAL", __func__, port->number); | |
4a90f09b AC |
827 | return ti_set_serial_info(tty, tport, |
828 | (struct serial_struct __user *)arg); | |
a30fa793 AC |
829 | case TIOCMIWAIT: |
830 | dbg("%s - (%d) TIOCMIWAIT", __func__, port->number); | |
831 | cprev = tport->tp_icount; | |
832 | while (1) { | |
833 | interruptible_sleep_on(&tport->tp_msr_wait); | |
834 | if (signal_pending(current)) | |
835 | return -ERESTARTSYS; | |
836 | cnow = tport->tp_icount; | |
837 | if (cnow.rng == cprev.rng && cnow.dsr == cprev.dsr && | |
838 | cnow.dcd == cprev.dcd && cnow.cts == cprev.cts) | |
839 | return -EIO; /* no change => error */ | |
840 | if (((arg & TIOCM_RNG) && (cnow.rng != cprev.rng)) || | |
841 | ((arg & TIOCM_DSR) && (cnow.dsr != cprev.dsr)) || | |
842 | ((arg & TIOCM_CD) && (cnow.dcd != cprev.dcd)) || | |
843 | ((arg & TIOCM_CTS) && (cnow.cts != cprev.cts))) | |
844 | return 0; | |
845 | cprev = cnow; | |
846 | } | |
847 | break; | |
848 | case TIOCGICOUNT: | |
849 | dbg("%s - (%d) TIOCGICOUNT RX=%d, TX=%d", | |
850 | __func__, port->number, | |
851 | tport->tp_icount.rx, tport->tp_icount.tx); | |
852 | if (copy_to_user((void __user *)arg, &tport->tp_icount, | |
853 | sizeof(tport->tp_icount))) | |
854 | return -EFAULT; | |
855 | return 0; | |
1da177e4 | 856 | } |
1da177e4 LT |
857 | return -ENOIOCTLCMD; |
858 | } | |
859 | ||
860 | ||
95da310e AC |
861 | static void ti_set_termios(struct tty_struct *tty, |
862 | struct usb_serial_port *port, struct ktermios *old_termios) | |
1da177e4 LT |
863 | { |
864 | struct ti_port *tport = usb_get_serial_port_data(port); | |
1da177e4 | 865 | struct ti_uart_config *config; |
a30fa793 | 866 | tcflag_t cflag, iflag; |
1da177e4 LT |
867 | int baud; |
868 | int status; | |
869 | int port_number = port->number - port->serial->minor; | |
870 | unsigned int mcr; | |
871 | ||
441b62c1 | 872 | dbg("%s - port %d", __func__, port->number); |
1da177e4 | 873 | |
1da177e4 LT |
874 | cflag = tty->termios->c_cflag; |
875 | iflag = tty->termios->c_iflag; | |
876 | ||
441b62c1 | 877 | dbg("%s - cflag %08x, iflag %08x", __func__, cflag, iflag); |
a30fa793 AC |
878 | dbg("%s - old clfag %08x, old iflag %08x", __func__, |
879 | old_termios->c_cflag, old_termios->c_iflag); | |
1da177e4 LT |
880 | |
881 | if (tport == NULL) | |
882 | return; | |
883 | ||
884 | config = kmalloc(sizeof(*config), GFP_KERNEL); | |
885 | if (!config) { | |
441b62c1 | 886 | dev_err(&port->dev, "%s - out of memory\n", __func__); |
1da177e4 LT |
887 | return; |
888 | } | |
889 | ||
890 | config->wFlags = 0; | |
891 | ||
892 | /* these flags must be set */ | |
893 | config->wFlags |= TI_UART_ENABLE_MS_INTS; | |
894 | config->wFlags |= TI_UART_ENABLE_AUTO_START_DMA; | |
895 | config->bUartMode = (__u8)(tport->tp_uart_mode); | |
896 | ||
897 | switch (cflag & CSIZE) { | |
a30fa793 AC |
898 | case CS5: |
899 | config->bDataBits = TI_UART_5_DATA_BITS; | |
900 | break; | |
901 | case CS6: | |
902 | config->bDataBits = TI_UART_6_DATA_BITS; | |
903 | break; | |
904 | case CS7: | |
905 | config->bDataBits = TI_UART_7_DATA_BITS; | |
906 | break; | |
907 | default: | |
908 | case CS8: | |
909 | config->bDataBits = TI_UART_8_DATA_BITS; | |
910 | break; | |
1da177e4 LT |
911 | } |
912 | ||
537699ef AC |
913 | /* CMSPAR isn't supported by this driver */ |
914 | tty->termios->c_cflag &= ~CMSPAR; | |
915 | ||
1da177e4 LT |
916 | if (cflag & PARENB) { |
917 | if (cflag & PARODD) { | |
918 | config->wFlags |= TI_UART_ENABLE_PARITY_CHECKING; | |
919 | config->bParity = TI_UART_ODD_PARITY; | |
920 | } else { | |
921 | config->wFlags |= TI_UART_ENABLE_PARITY_CHECKING; | |
922 | config->bParity = TI_UART_EVEN_PARITY; | |
923 | } | |
924 | } else { | |
925 | config->wFlags &= ~TI_UART_ENABLE_PARITY_CHECKING; | |
a30fa793 | 926 | config->bParity = TI_UART_NO_PARITY; |
1da177e4 LT |
927 | } |
928 | ||
929 | if (cflag & CSTOPB) | |
930 | config->bStopBits = TI_UART_2_STOP_BITS; | |
931 | else | |
932 | config->bStopBits = TI_UART_1_STOP_BITS; | |
933 | ||
934 | if (cflag & CRTSCTS) { | |
935 | /* RTS flow control must be off to drop RTS for baud rate B0 */ | |
936 | if ((cflag & CBAUD) != B0) | |
937 | config->wFlags |= TI_UART_ENABLE_RTS_IN; | |
938 | config->wFlags |= TI_UART_ENABLE_CTS_OUT; | |
939 | } else { | |
940 | tty->hw_stopped = 0; | |
941 | ti_restart_read(tport, tty); | |
942 | } | |
943 | ||
944 | if (I_IXOFF(tty) || I_IXON(tty)) { | |
945 | config->cXon = START_CHAR(tty); | |
946 | config->cXoff = STOP_CHAR(tty); | |
947 | ||
948 | if (I_IXOFF(tty)) | |
949 | config->wFlags |= TI_UART_ENABLE_X_IN; | |
950 | else | |
951 | ti_restart_read(tport, tty); | |
952 | ||
953 | if (I_IXON(tty)) | |
954 | config->wFlags |= TI_UART_ENABLE_X_OUT; | |
955 | } | |
956 | ||
957 | baud = tty_get_baud_rate(tty); | |
537699ef AC |
958 | if (!baud) |
959 | baud = 9600; | |
1da177e4 LT |
960 | if (tport->tp_tdev->td_is_3410) |
961 | config->wBaudRate = (__u16)((923077 + baud/2) / baud); | |
962 | else | |
963 | config->wBaudRate = (__u16)((461538 + baud/2) / baud); | |
964 | ||
537699ef AC |
965 | /* FIXME: Should calculate resulting baud here and report it back */ |
966 | if ((cflag & CBAUD) != B0) | |
967 | tty_encode_baud_rate(tty, baud, baud); | |
968 | ||
1da177e4 | 969 | dbg("%s - BaudRate=%d, wBaudRate=%d, wFlags=0x%04X, bDataBits=%d, bParity=%d, bStopBits=%d, cXon=%d, cXoff=%d, bUartMode=%d", |
441b62c1 | 970 | __func__, baud, config->wBaudRate, config->wFlags, config->bDataBits, config->bParity, config->bStopBits, config->cXon, config->cXoff, config->bUartMode); |
1da177e4 LT |
971 | |
972 | cpu_to_be16s(&config->wBaudRate); | |
973 | cpu_to_be16s(&config->wFlags); | |
974 | ||
975 | status = ti_command_out_sync(tport->tp_tdev, TI_SET_CONFIG, | |
976 | (__u8)(TI_UART1_PORT + port_number), 0, (__u8 *)config, | |
977 | sizeof(*config)); | |
978 | if (status) | |
a30fa793 AC |
979 | dev_err(&port->dev, "%s - cannot set config on port %d, %d\n", |
980 | __func__, port_number, status); | |
1da177e4 LT |
981 | |
982 | /* SET_CONFIG asserts RTS and DTR, reset them correctly */ | |
983 | mcr = tport->tp_shadow_mcr; | |
984 | /* if baud rate is B0, clear RTS and DTR */ | |
985 | if ((cflag & CBAUD) == B0) | |
986 | mcr &= ~(TI_MCR_DTR | TI_MCR_RTS); | |
987 | status = ti_set_mcr(tport, mcr); | |
988 | if (status) | |
a30fa793 AC |
989 | dev_err(&port->dev, |
990 | "%s - cannot set modem control on port %d, %d\n", | |
991 | __func__, port_number, status); | |
1da177e4 LT |
992 | |
993 | kfree(config); | |
994 | } | |
995 | ||
996 | ||
95da310e | 997 | static int ti_tiocmget(struct tty_struct *tty, struct file *file) |
1da177e4 | 998 | { |
95da310e | 999 | struct usb_serial_port *port = tty->driver_data; |
1da177e4 LT |
1000 | struct ti_port *tport = usb_get_serial_port_data(port); |
1001 | unsigned int result; | |
1002 | unsigned int msr; | |
1003 | unsigned int mcr; | |
04ca89d4 | 1004 | unsigned long flags; |
1da177e4 | 1005 | |
441b62c1 | 1006 | dbg("%s - port %d", __func__, port->number); |
1da177e4 LT |
1007 | |
1008 | if (tport == NULL) | |
1009 | return -ENODEV; | |
1010 | ||
04ca89d4 | 1011 | spin_lock_irqsave(&tport->tp_lock, flags); |
1da177e4 LT |
1012 | msr = tport->tp_msr; |
1013 | mcr = tport->tp_shadow_mcr; | |
04ca89d4 | 1014 | spin_unlock_irqrestore(&tport->tp_lock, flags); |
1da177e4 LT |
1015 | |
1016 | result = ((mcr & TI_MCR_DTR) ? TIOCM_DTR : 0) | |
1017 | | ((mcr & TI_MCR_RTS) ? TIOCM_RTS : 0) | |
1018 | | ((mcr & TI_MCR_LOOP) ? TIOCM_LOOP : 0) | |
1019 | | ((msr & TI_MSR_CTS) ? TIOCM_CTS : 0) | |
1020 | | ((msr & TI_MSR_CD) ? TIOCM_CAR : 0) | |
1021 | | ((msr & TI_MSR_RI) ? TIOCM_RI : 0) | |
1022 | | ((msr & TI_MSR_DSR) ? TIOCM_DSR : 0); | |
1023 | ||
441b62c1 | 1024 | dbg("%s - 0x%04X", __func__, result); |
1da177e4 LT |
1025 | |
1026 | return result; | |
1027 | } | |
1028 | ||
1029 | ||
95da310e | 1030 | static int ti_tiocmset(struct tty_struct *tty, struct file *file, |
1da177e4 LT |
1031 | unsigned int set, unsigned int clear) |
1032 | { | |
95da310e | 1033 | struct usb_serial_port *port = tty->driver_data; |
1da177e4 LT |
1034 | struct ti_port *tport = usb_get_serial_port_data(port); |
1035 | unsigned int mcr; | |
04ca89d4 | 1036 | unsigned long flags; |
1da177e4 | 1037 | |
441b62c1 | 1038 | dbg("%s - port %d", __func__, port->number); |
1da177e4 LT |
1039 | |
1040 | if (tport == NULL) | |
1041 | return -ENODEV; | |
1042 | ||
04ca89d4 | 1043 | spin_lock_irqsave(&tport->tp_lock, flags); |
1da177e4 LT |
1044 | mcr = tport->tp_shadow_mcr; |
1045 | ||
1046 | if (set & TIOCM_RTS) | |
1047 | mcr |= TI_MCR_RTS; | |
1048 | if (set & TIOCM_DTR) | |
1049 | mcr |= TI_MCR_DTR; | |
1050 | if (set & TIOCM_LOOP) | |
1051 | mcr |= TI_MCR_LOOP; | |
1052 | ||
1053 | if (clear & TIOCM_RTS) | |
1054 | mcr &= ~TI_MCR_RTS; | |
1055 | if (clear & TIOCM_DTR) | |
1056 | mcr &= ~TI_MCR_DTR; | |
1057 | if (clear & TIOCM_LOOP) | |
1058 | mcr &= ~TI_MCR_LOOP; | |
04ca89d4 | 1059 | spin_unlock_irqrestore(&tport->tp_lock, flags); |
1da177e4 LT |
1060 | |
1061 | return ti_set_mcr(tport, mcr); | |
1062 | } | |
1063 | ||
1064 | ||
95da310e | 1065 | static void ti_break(struct tty_struct *tty, int break_state) |
1da177e4 | 1066 | { |
95da310e | 1067 | struct usb_serial_port *port = tty->driver_data; |
1da177e4 LT |
1068 | struct ti_port *tport = usb_get_serial_port_data(port); |
1069 | int status; | |
1070 | ||
441b62c1 | 1071 | dbg("%s - state = %d", __func__, break_state); |
1da177e4 LT |
1072 | |
1073 | if (tport == NULL) | |
1074 | return; | |
1075 | ||
1076 | ti_drain(tport, (tport->tp_closing_wait*HZ)/100, 0); | |
1077 | ||
1078 | status = ti_write_byte(tport->tp_tdev, | |
1079 | tport->tp_uart_base_addr + TI_UART_OFFSET_LCR, | |
1080 | TI_LCR_BREAK, break_state == -1 ? TI_LCR_BREAK : 0); | |
1081 | ||
1082 | if (status) | |
441b62c1 | 1083 | dbg("%s - error setting break, %d", __func__, status); |
1da177e4 LT |
1084 | } |
1085 | ||
1086 | ||
7d12e780 | 1087 | static void ti_interrupt_callback(struct urb *urb) |
1da177e4 | 1088 | { |
cdc97792 | 1089 | struct ti_device *tdev = urb->context; |
1da177e4 LT |
1090 | struct usb_serial_port *port; |
1091 | struct usb_serial *serial = tdev->td_serial; | |
1092 | struct ti_port *tport; | |
1093 | struct device *dev = &urb->dev->dev; | |
1094 | unsigned char *data = urb->transfer_buffer; | |
1095 | int length = urb->actual_length; | |
1096 | int port_number; | |
1097 | int function; | |
52171b48 GKH |
1098 | int status = urb->status; |
1099 | int retval; | |
1da177e4 LT |
1100 | __u8 msr; |
1101 | ||
441b62c1 | 1102 | dbg("%s", __func__); |
1da177e4 | 1103 | |
52171b48 | 1104 | switch (status) { |
1da177e4 LT |
1105 | case 0: |
1106 | break; | |
1107 | case -ECONNRESET: | |
1108 | case -ENOENT: | |
1109 | case -ESHUTDOWN: | |
441b62c1 | 1110 | dbg("%s - urb shutting down, %d", __func__, status); |
1da177e4 LT |
1111 | tdev->td_urb_error = 1; |
1112 | return; | |
1113 | default: | |
52171b48 | 1114 | dev_err(dev, "%s - nonzero urb status, %d\n", |
441b62c1 | 1115 | __func__, status); |
1da177e4 LT |
1116 | tdev->td_urb_error = 1; |
1117 | goto exit; | |
1118 | } | |
1119 | ||
1120 | if (length != 2) { | |
441b62c1 | 1121 | dbg("%s - bad packet size, %d", __func__, length); |
1da177e4 LT |
1122 | goto exit; |
1123 | } | |
1124 | ||
1125 | if (data[0] == TI_CODE_HARDWARE_ERROR) { | |
441b62c1 | 1126 | dev_err(dev, "%s - hardware error, %d\n", __func__, data[1]); |
1da177e4 LT |
1127 | goto exit; |
1128 | } | |
1129 | ||
1130 | port_number = TI_GET_PORT_FROM_CODE(data[0]); | |
1131 | function = TI_GET_FUNC_FROM_CODE(data[0]); | |
1132 | ||
a30fa793 AC |
1133 | dbg("%s - port_number %d, function %d, data 0x%02X", |
1134 | __func__, port_number, function, data[1]); | |
1da177e4 LT |
1135 | |
1136 | if (port_number >= serial->num_ports) { | |
a30fa793 AC |
1137 | dev_err(dev, "%s - bad port number, %d\n", |
1138 | __func__, port_number); | |
1da177e4 LT |
1139 | goto exit; |
1140 | } | |
1141 | ||
1142 | port = serial->port[port_number]; | |
1143 | ||
1144 | tport = usb_get_serial_port_data(port); | |
1145 | if (!tport) | |
1146 | goto exit; | |
1147 | ||
1148 | switch (function) { | |
1149 | case TI_CODE_DATA_ERROR: | |
a30fa793 AC |
1150 | dev_err(dev, "%s - DATA ERROR, port %d, data 0x%02X\n", |
1151 | __func__, port_number, data[1]); | |
1da177e4 LT |
1152 | break; |
1153 | ||
1154 | case TI_CODE_MODEM_STATUS: | |
1155 | msr = data[1]; | |
441b62c1 | 1156 | dbg("%s - port %d, msr 0x%02X", __func__, port_number, msr); |
1da177e4 LT |
1157 | ti_handle_new_msr(tport, msr); |
1158 | break; | |
1159 | ||
1160 | default: | |
a30fa793 AC |
1161 | dev_err(dev, "%s - unknown interrupt code, 0x%02X\n", |
1162 | __func__, data[1]); | |
1da177e4 LT |
1163 | break; |
1164 | } | |
1165 | ||
1166 | exit: | |
52171b48 GKH |
1167 | retval = usb_submit_urb(urb, GFP_ATOMIC); |
1168 | if (retval) | |
1169 | dev_err(dev, "%s - resubmit interrupt urb failed, %d\n", | |
441b62c1 | 1170 | __func__, retval); |
1da177e4 LT |
1171 | } |
1172 | ||
1173 | ||
7d12e780 | 1174 | static void ti_bulk_in_callback(struct urb *urb) |
1da177e4 | 1175 | { |
cdc97792 | 1176 | struct ti_port *tport = urb->context; |
1da177e4 LT |
1177 | struct usb_serial_port *port = tport->tp_port; |
1178 | struct device *dev = &urb->dev->dev; | |
52171b48 GKH |
1179 | int status = urb->status; |
1180 | int retval = 0; | |
4a90f09b | 1181 | struct tty_struct *tty; |
1da177e4 | 1182 | |
441b62c1 | 1183 | dbg("%s", __func__); |
1da177e4 | 1184 | |
52171b48 | 1185 | switch (status) { |
1da177e4 LT |
1186 | case 0: |
1187 | break; | |
1188 | case -ECONNRESET: | |
1189 | case -ENOENT: | |
1190 | case -ESHUTDOWN: | |
441b62c1 | 1191 | dbg("%s - urb shutting down, %d", __func__, status); |
1da177e4 LT |
1192 | tport->tp_tdev->td_urb_error = 1; |
1193 | wake_up_interruptible(&tport->tp_write_wait); | |
1194 | return; | |
1195 | default: | |
52171b48 | 1196 | dev_err(dev, "%s - nonzero urb status, %d\n", |
a30fa793 | 1197 | __func__, status); |
1da177e4 LT |
1198 | tport->tp_tdev->td_urb_error = 1; |
1199 | wake_up_interruptible(&tport->tp_write_wait); | |
1200 | } | |
1201 | ||
52171b48 | 1202 | if (status == -EPIPE) |
1da177e4 LT |
1203 | goto exit; |
1204 | ||
52171b48 | 1205 | if (status) { |
441b62c1 | 1206 | dev_err(dev, "%s - stopping read!\n", __func__); |
1da177e4 LT |
1207 | return; |
1208 | } | |
1209 | ||
4a90f09b AC |
1210 | tty = tty_port_tty_get(&port->port); |
1211 | if (tty && urb->actual_length) { | |
441b62c1 | 1212 | usb_serial_debug_data(debug, dev, __func__, |
1da177e4 LT |
1213 | urb->actual_length, urb->transfer_buffer); |
1214 | ||
1215 | if (!tport->tp_is_open) | |
441b62c1 | 1216 | dbg("%s - port closed, dropping data", __func__); |
1da177e4 | 1217 | else |
4a90f09b | 1218 | ti_recv(&urb->dev->dev, tty, |
a30fa793 AC |
1219 | urb->transfer_buffer, |
1220 | urb->actual_length); | |
1da177e4 LT |
1221 | |
1222 | spin_lock(&tport->tp_lock); | |
1223 | tport->tp_icount.rx += urb->actual_length; | |
1224 | spin_unlock(&tport->tp_lock); | |
4a90f09b | 1225 | tty_kref_put(tty); |
1da177e4 LT |
1226 | } |
1227 | ||
1228 | exit: | |
1229 | /* continue to read unless stopping */ | |
1230 | spin_lock(&tport->tp_lock); | |
1231 | if (tport->tp_read_urb_state == TI_READ_URB_RUNNING) { | |
1232 | urb->dev = port->serial->dev; | |
52171b48 | 1233 | retval = usb_submit_urb(urb, GFP_ATOMIC); |
1da177e4 LT |
1234 | } else if (tport->tp_read_urb_state == TI_READ_URB_STOPPING) { |
1235 | tport->tp_read_urb_state = TI_READ_URB_STOPPED; | |
1236 | } | |
1237 | spin_unlock(&tport->tp_lock); | |
52171b48 GKH |
1238 | if (retval) |
1239 | dev_err(dev, "%s - resubmit read urb failed, %d\n", | |
441b62c1 | 1240 | __func__, retval); |
1da177e4 LT |
1241 | } |
1242 | ||
1243 | ||
7d12e780 | 1244 | static void ti_bulk_out_callback(struct urb *urb) |
1da177e4 | 1245 | { |
cdc97792 | 1246 | struct ti_port *tport = urb->context; |
1da177e4 LT |
1247 | struct usb_serial_port *port = tport->tp_port; |
1248 | struct device *dev = &urb->dev->dev; | |
52171b48 | 1249 | int status = urb->status; |
1da177e4 | 1250 | |
441b62c1 | 1251 | dbg("%s - port %d", __func__, port->number); |
1da177e4 LT |
1252 | |
1253 | tport->tp_write_urb_in_use = 0; | |
1254 | ||
52171b48 | 1255 | switch (status) { |
1da177e4 LT |
1256 | case 0: |
1257 | break; | |
1258 | case -ECONNRESET: | |
1259 | case -ENOENT: | |
1260 | case -ESHUTDOWN: | |
441b62c1 | 1261 | dbg("%s - urb shutting down, %d", __func__, status); |
1da177e4 LT |
1262 | tport->tp_tdev->td_urb_error = 1; |
1263 | wake_up_interruptible(&tport->tp_write_wait); | |
1264 | return; | |
1265 | default: | |
52171b48 | 1266 | dev_err(dev, "%s - nonzero urb status, %d\n", |
441b62c1 | 1267 | __func__, status); |
1da177e4 LT |
1268 | tport->tp_tdev->td_urb_error = 1; |
1269 | wake_up_interruptible(&tport->tp_write_wait); | |
1270 | } | |
1271 | ||
1272 | /* send any buffered data */ | |
1273 | ti_send(tport); | |
1274 | } | |
1275 | ||
1276 | ||
1277 | static void ti_recv(struct device *dev, struct tty_struct *tty, | |
1278 | unsigned char *data, int length) | |
1279 | { | |
1280 | int cnt; | |
1281 | ||
1282 | do { | |
33f0f88f AC |
1283 | cnt = tty_buffer_request_room(tty, length); |
1284 | if (cnt < length) { | |
a30fa793 AC |
1285 | dev_err(dev, "%s - dropping data, %d bytes lost\n", |
1286 | __func__, length - cnt); | |
1287 | if (cnt == 0) | |
33f0f88f | 1288 | break; |
1da177e4 | 1289 | } |
33f0f88f AC |
1290 | tty_insert_flip_string(tty, data, cnt); |
1291 | tty_flip_buffer_push(tty); | |
1da177e4 LT |
1292 | data += cnt; |
1293 | length -= cnt; | |
1294 | } while (length > 0); | |
1295 | ||
1da177e4 LT |
1296 | } |
1297 | ||
1298 | ||
1299 | static void ti_send(struct ti_port *tport) | |
1300 | { | |
1301 | int count, result; | |
1302 | struct usb_serial_port *port = tport->tp_port; | |
4a90f09b | 1303 | struct tty_struct *tty = tty_port_tty_get(&port->port); /* FIXME */ |
1da177e4 LT |
1304 | unsigned long flags; |
1305 | ||
1306 | ||
441b62c1 | 1307 | dbg("%s - port %d", __func__, port->number); |
1da177e4 LT |
1308 | |
1309 | spin_lock_irqsave(&tport->tp_lock, flags); | |
1310 | ||
4a90f09b AC |
1311 | if (tport->tp_write_urb_in_use) |
1312 | goto unlock; | |
1da177e4 LT |
1313 | |
1314 | count = ti_buf_get(tport->tp_write_buf, | |
1315 | port->write_urb->transfer_buffer, | |
1316 | port->bulk_out_size); | |
1317 | ||
4a90f09b AC |
1318 | if (count == 0) |
1319 | goto unlock; | |
1da177e4 LT |
1320 | |
1321 | tport->tp_write_urb_in_use = 1; | |
1322 | ||
1323 | spin_unlock_irqrestore(&tport->tp_lock, flags); | |
1324 | ||
a30fa793 AC |
1325 | usb_serial_debug_data(debug, &port->dev, __func__, count, |
1326 | port->write_urb->transfer_buffer); | |
1da177e4 LT |
1327 | |
1328 | usb_fill_bulk_urb(port->write_urb, port->serial->dev, | |
1329 | usb_sndbulkpipe(port->serial->dev, | |
1330 | port->bulk_out_endpointAddress), | |
1331 | port->write_urb->transfer_buffer, count, | |
1332 | ti_bulk_out_callback, tport); | |
1333 | ||
1334 | result = usb_submit_urb(port->write_urb, GFP_ATOMIC); | |
1335 | if (result) { | |
a30fa793 AC |
1336 | dev_err(&port->dev, "%s - submit write urb failed, %d\n", |
1337 | __func__, result); | |
1338 | tport->tp_write_urb_in_use = 0; | |
1da177e4 LT |
1339 | /* TODO: reschedule ti_send */ |
1340 | } else { | |
1341 | spin_lock_irqsave(&tport->tp_lock, flags); | |
1342 | tport->tp_icount.tx += count; | |
1343 | spin_unlock_irqrestore(&tport->tp_lock, flags); | |
1344 | } | |
1345 | ||
1346 | /* more room in the buffer for new writes, wakeup */ | |
1347 | if (tty) | |
1348 | tty_wakeup(tty); | |
4a90f09b | 1349 | tty_kref_put(tty); |
1da177e4 | 1350 | wake_up_interruptible(&tport->tp_write_wait); |
4a90f09b AC |
1351 | return; |
1352 | unlock: | |
1353 | spin_unlock_irqrestore(&tport->tp_lock, flags); | |
1354 | tty_kref_put(tty); | |
1355 | return; | |
1da177e4 LT |
1356 | } |
1357 | ||
1358 | ||
1359 | static int ti_set_mcr(struct ti_port *tport, unsigned int mcr) | |
1360 | { | |
04ca89d4 | 1361 | unsigned long flags; |
1da177e4 LT |
1362 | int status; |
1363 | ||
1364 | status = ti_write_byte(tport->tp_tdev, | |
1365 | tport->tp_uart_base_addr + TI_UART_OFFSET_MCR, | |
1366 | TI_MCR_RTS | TI_MCR_DTR | TI_MCR_LOOP, mcr); | |
1367 | ||
04ca89d4 | 1368 | spin_lock_irqsave(&tport->tp_lock, flags); |
1da177e4 LT |
1369 | if (!status) |
1370 | tport->tp_shadow_mcr = mcr; | |
04ca89d4 | 1371 | spin_unlock_irqrestore(&tport->tp_lock, flags); |
1da177e4 LT |
1372 | |
1373 | return status; | |
1374 | } | |
1375 | ||
1376 | ||
1377 | static int ti_get_lsr(struct ti_port *tport) | |
1378 | { | |
a30fa793 | 1379 | int size, status; |
1da177e4 LT |
1380 | struct ti_device *tdev = tport->tp_tdev; |
1381 | struct usb_serial_port *port = tport->tp_port; | |
1382 | int port_number = port->number - port->serial->minor; | |
1383 | struct ti_port_status *data; | |
1384 | ||
441b62c1 | 1385 | dbg("%s - port %d", __func__, port->number); |
1da177e4 LT |
1386 | |
1387 | size = sizeof(struct ti_port_status); | |
1388 | data = kmalloc(size, GFP_KERNEL); | |
1389 | if (!data) { | |
441b62c1 | 1390 | dev_err(&port->dev, "%s - out of memory\n", __func__); |
1da177e4 LT |
1391 | return -ENOMEM; |
1392 | } | |
1393 | ||
1394 | status = ti_command_in_sync(tdev, TI_GET_PORT_STATUS, | |
1395 | (__u8)(TI_UART1_PORT+port_number), 0, (__u8 *)data, size); | |
1396 | if (status) { | |
a30fa793 AC |
1397 | dev_err(&port->dev, |
1398 | "%s - get port status command failed, %d\n", | |
1399 | __func__, status); | |
1da177e4 LT |
1400 | goto free_data; |
1401 | } | |
1402 | ||
441b62c1 | 1403 | dbg("%s - lsr 0x%02X", __func__, data->bLSR); |
1da177e4 LT |
1404 | |
1405 | tport->tp_lsr = data->bLSR; | |
1406 | ||
1407 | free_data: | |
1408 | kfree(data); | |
1409 | return status; | |
1410 | } | |
1411 | ||
1412 | ||
1413 | static int ti_get_serial_info(struct ti_port *tport, | |
1414 | struct serial_struct __user *ret_arg) | |
1415 | { | |
1416 | struct usb_serial_port *port = tport->tp_port; | |
1417 | struct serial_struct ret_serial; | |
1418 | ||
1419 | if (!ret_arg) | |
1420 | return -EFAULT; | |
1421 | ||
1422 | memset(&ret_serial, 0, sizeof(ret_serial)); | |
1423 | ||
1424 | ret_serial.type = PORT_16550A; | |
1425 | ret_serial.line = port->serial->minor; | |
1426 | ret_serial.port = port->number - port->serial->minor; | |
1427 | ret_serial.flags = tport->tp_flags; | |
1428 | ret_serial.xmit_fifo_size = TI_WRITE_BUF_SIZE; | |
1429 | ret_serial.baud_base = tport->tp_tdev->td_is_3410 ? 921600 : 460800; | |
1430 | ret_serial.closing_wait = tport->tp_closing_wait; | |
1431 | ||
1432 | if (copy_to_user(ret_arg, &ret_serial, sizeof(*ret_arg))) | |
1433 | return -EFAULT; | |
1434 | ||
1435 | return 0; | |
1436 | } | |
1437 | ||
1438 | ||
4a90f09b | 1439 | static int ti_set_serial_info(struct tty_struct *tty, struct ti_port *tport, |
1da177e4 LT |
1440 | struct serial_struct __user *new_arg) |
1441 | { | |
1da177e4 LT |
1442 | struct serial_struct new_serial; |
1443 | ||
1444 | if (copy_from_user(&new_serial, new_arg, sizeof(new_serial))) | |
1445 | return -EFAULT; | |
1446 | ||
1447 | tport->tp_flags = new_serial.flags & TI_SET_SERIAL_FLAGS; | |
4a90f09b | 1448 | tty->low_latency = (tport->tp_flags & ASYNC_LOW_LATENCY) ? 1 : 0; |
1da177e4 LT |
1449 | tport->tp_closing_wait = new_serial.closing_wait; |
1450 | ||
1451 | return 0; | |
1452 | } | |
1453 | ||
1454 | ||
1455 | static void ti_handle_new_msr(struct ti_port *tport, __u8 msr) | |
1456 | { | |
1457 | struct async_icount *icount; | |
1458 | struct tty_struct *tty; | |
1459 | unsigned long flags; | |
1460 | ||
441b62c1 | 1461 | dbg("%s - msr 0x%02X", __func__, msr); |
1da177e4 LT |
1462 | |
1463 | if (msr & TI_MSR_DELTA_MASK) { | |
1464 | spin_lock_irqsave(&tport->tp_lock, flags); | |
1465 | icount = &tport->tp_icount; | |
1466 | if (msr & TI_MSR_DELTA_CTS) | |
1467 | icount->cts++; | |
1468 | if (msr & TI_MSR_DELTA_DSR) | |
1469 | icount->dsr++; | |
1470 | if (msr & TI_MSR_DELTA_CD) | |
1471 | icount->dcd++; | |
1472 | if (msr & TI_MSR_DELTA_RI) | |
1473 | icount->rng++; | |
1474 | wake_up_interruptible(&tport->tp_msr_wait); | |
1475 | spin_unlock_irqrestore(&tport->tp_lock, flags); | |
1476 | } | |
1477 | ||
1478 | tport->tp_msr = msr & TI_MSR_MASK; | |
1479 | ||
1480 | /* handle CTS flow control */ | |
4a90f09b | 1481 | tty = tty_port_tty_get(&tport->tp_port->port); |
1da177e4 LT |
1482 | if (tty && C_CRTSCTS(tty)) { |
1483 | if (msr & TI_MSR_CTS) { | |
1484 | tty->hw_stopped = 0; | |
1485 | tty_wakeup(tty); | |
1486 | } else { | |
1487 | tty->hw_stopped = 1; | |
1488 | } | |
1489 | } | |
4a90f09b | 1490 | tty_kref_put(tty); |
1da177e4 LT |
1491 | } |
1492 | ||
1493 | ||
1494 | static void ti_drain(struct ti_port *tport, unsigned long timeout, int flush) | |
1495 | { | |
1496 | struct ti_device *tdev = tport->tp_tdev; | |
1497 | struct usb_serial_port *port = tport->tp_port; | |
1498 | wait_queue_t wait; | |
1da177e4 | 1499 | |
441b62c1 | 1500 | dbg("%s - port %d", __func__, port->number); |
1da177e4 | 1501 | |
0915f490 | 1502 | spin_lock_irq(&tport->tp_lock); |
1da177e4 LT |
1503 | |
1504 | /* wait for data to drain from the buffer */ | |
1505 | tdev->td_urb_error = 0; | |
1506 | init_waitqueue_entry(&wait, current); | |
1507 | add_wait_queue(&tport->tp_write_wait, &wait); | |
1508 | for (;;) { | |
1509 | set_current_state(TASK_INTERRUPTIBLE); | |
1510 | if (ti_buf_data_avail(tport->tp_write_buf) == 0 | |
1511 | || timeout == 0 || signal_pending(current) | |
1512 | || tdev->td_urb_error | |
0915f490 | 1513 | || port->serial->disconnected) /* disconnect */ |
1da177e4 | 1514 | break; |
0915f490 | 1515 | spin_unlock_irq(&tport->tp_lock); |
1da177e4 | 1516 | timeout = schedule_timeout(timeout); |
0915f490 | 1517 | spin_lock_irq(&tport->tp_lock); |
1da177e4 LT |
1518 | } |
1519 | set_current_state(TASK_RUNNING); | |
1520 | remove_wait_queue(&tport->tp_write_wait, &wait); | |
1521 | ||
1522 | /* flush any remaining data in the buffer */ | |
1523 | if (flush) | |
1524 | ti_buf_clear(tport->tp_write_buf); | |
1525 | ||
0915f490 | 1526 | spin_unlock_irq(&tport->tp_lock); |
1da177e4 | 1527 | |
0915f490 | 1528 | mutex_lock(&port->serial->disc_mutex); |
1da177e4 LT |
1529 | /* wait for data to drain from the device */ |
1530 | /* wait for empty tx register, plus 20 ms */ | |
1531 | timeout += jiffies; | |
1532 | tport->tp_lsr &= ~TI_LSR_TX_EMPTY; | |
1533 | while ((long)(jiffies - timeout) < 0 && !signal_pending(current) | |
1534 | && !(tport->tp_lsr&TI_LSR_TX_EMPTY) && !tdev->td_urb_error | |
0915f490 | 1535 | && !port->serial->disconnected) { |
1da177e4 LT |
1536 | if (ti_get_lsr(tport)) |
1537 | break; | |
0915f490 | 1538 | mutex_unlock(&port->serial->disc_mutex); |
1da177e4 | 1539 | msleep_interruptible(20); |
0915f490 | 1540 | mutex_lock(&port->serial->disc_mutex); |
1da177e4 | 1541 | } |
0915f490 | 1542 | mutex_unlock(&port->serial->disc_mutex); |
1da177e4 LT |
1543 | } |
1544 | ||
1545 | ||
1546 | static void ti_stop_read(struct ti_port *tport, struct tty_struct *tty) | |
1547 | { | |
1548 | unsigned long flags; | |
1549 | ||
1550 | spin_lock_irqsave(&tport->tp_lock, flags); | |
1551 | ||
1552 | if (tport->tp_read_urb_state == TI_READ_URB_RUNNING) | |
1553 | tport->tp_read_urb_state = TI_READ_URB_STOPPING; | |
1554 | ||
1555 | spin_unlock_irqrestore(&tport->tp_lock, flags); | |
1556 | } | |
1557 | ||
1558 | ||
1559 | static int ti_restart_read(struct ti_port *tport, struct tty_struct *tty) | |
1560 | { | |
1561 | struct urb *urb; | |
1562 | int status = 0; | |
1563 | unsigned long flags; | |
1564 | ||
1565 | spin_lock_irqsave(&tport->tp_lock, flags); | |
1566 | ||
1567 | if (tport->tp_read_urb_state == TI_READ_URB_STOPPED) { | |
944dc184 | 1568 | tport->tp_read_urb_state = TI_READ_URB_RUNNING; |
1da177e4 | 1569 | urb = tport->tp_port->read_urb; |
944dc184 | 1570 | spin_unlock_irqrestore(&tport->tp_lock, flags); |
1da177e4 LT |
1571 | urb->complete = ti_bulk_in_callback; |
1572 | urb->context = tport; | |
1573 | urb->dev = tport->tp_port->serial->dev; | |
1574 | status = usb_submit_urb(urb, GFP_KERNEL); | |
944dc184 ON |
1575 | } else { |
1576 | tport->tp_read_urb_state = TI_READ_URB_RUNNING; | |
1577 | spin_unlock_irqrestore(&tport->tp_lock, flags); | |
1da177e4 | 1578 | } |
1da177e4 LT |
1579 | |
1580 | return status; | |
1581 | } | |
1582 | ||
1583 | ||
1584 | static int ti_command_out_sync(struct ti_device *tdev, __u8 command, | |
1585 | __u16 moduleid, __u16 value, __u8 *data, int size) | |
1586 | { | |
1587 | int status; | |
1588 | ||
1589 | status = usb_control_msg(tdev->td_serial->dev, | |
1590 | usb_sndctrlpipe(tdev->td_serial->dev, 0), command, | |
1591 | (USB_TYPE_VENDOR | USB_RECIP_DEVICE | USB_DIR_OUT), | |
1592 | value, moduleid, data, size, 1000); | |
1593 | ||
1594 | if (status == size) | |
1595 | status = 0; | |
1596 | ||
1597 | if (status > 0) | |
1598 | status = -ECOMM; | |
1599 | ||
1600 | return status; | |
1601 | } | |
1602 | ||
1603 | ||
1604 | static int ti_command_in_sync(struct ti_device *tdev, __u8 command, | |
1605 | __u16 moduleid, __u16 value, __u8 *data, int size) | |
1606 | { | |
1607 | int status; | |
1608 | ||
1609 | status = usb_control_msg(tdev->td_serial->dev, | |
1610 | usb_rcvctrlpipe(tdev->td_serial->dev, 0), command, | |
1611 | (USB_TYPE_VENDOR | USB_RECIP_DEVICE | USB_DIR_IN), | |
1612 | value, moduleid, data, size, 1000); | |
1613 | ||
1614 | if (status == size) | |
1615 | status = 0; | |
1616 | ||
1617 | if (status > 0) | |
1618 | status = -ECOMM; | |
1619 | ||
1620 | return status; | |
1621 | } | |
1622 | ||
1623 | ||
1624 | static int ti_write_byte(struct ti_device *tdev, unsigned long addr, | |
1625 | __u8 mask, __u8 byte) | |
1626 | { | |
1627 | int status; | |
1628 | unsigned int size; | |
1629 | struct ti_write_data_bytes *data; | |
1630 | struct device *dev = &tdev->td_serial->dev->dev; | |
1631 | ||
a30fa793 AC |
1632 | dbg("%s - addr 0x%08lX, mask 0x%02X, byte 0x%02X", |
1633 | __func__, addr, mask, byte); | |
1da177e4 LT |
1634 | |
1635 | size = sizeof(struct ti_write_data_bytes) + 2; | |
1636 | data = kmalloc(size, GFP_KERNEL); | |
1637 | if (!data) { | |
441b62c1 | 1638 | dev_err(dev, "%s - out of memory\n", __func__); |
1da177e4 LT |
1639 | return -ENOMEM; |
1640 | } | |
1641 | ||
1642 | data->bAddrType = TI_RW_DATA_ADDR_XDATA; | |
1643 | data->bDataType = TI_RW_DATA_BYTE; | |
1644 | data->bDataCounter = 1; | |
1645 | data->wBaseAddrHi = cpu_to_be16(addr>>16); | |
1646 | data->wBaseAddrLo = cpu_to_be16(addr); | |
1647 | data->bData[0] = mask; | |
1648 | data->bData[1] = byte; | |
1649 | ||
1650 | status = ti_command_out_sync(tdev, TI_WRITE_DATA, TI_RAM_PORT, 0, | |
1651 | (__u8 *)data, size); | |
1652 | ||
1653 | if (status < 0) | |
441b62c1 | 1654 | dev_err(dev, "%s - failed, %d\n", __func__, status); |
1da177e4 LT |
1655 | |
1656 | kfree(data); | |
1657 | ||
1658 | return status; | |
1659 | } | |
1660 | ||
95da310e AC |
1661 | static int ti_do_download(struct usb_device *dev, int pipe, |
1662 | u8 *buffer, int size) | |
1da177e4 | 1663 | { |
1da177e4 | 1664 | int pos; |
95da310e | 1665 | u8 cs = 0; |
1da177e4 | 1666 | int done; |
1da177e4 | 1667 | struct ti_firmware_header *header; |
95da310e AC |
1668 | int status; |
1669 | int len; | |
a30fa793 AC |
1670 | |
1671 | for (pos = sizeof(struct ti_firmware_header); pos < size; pos++) | |
1da177e4 LT |
1672 | cs = (__u8)(cs + buffer[pos]); |
1673 | ||
1674 | header = (struct ti_firmware_header *)buffer; | |
a30fa793 | 1675 | header->wLength = cpu_to_le16((__u16)(size |
95da310e | 1676 | - sizeof(struct ti_firmware_header))); |
1da177e4 LT |
1677 | header->bCheckSum = cs; |
1678 | ||
441b62c1 | 1679 | dbg("%s - downloading firmware", __func__); |
95da310e AC |
1680 | for (pos = 0; pos < size; pos += done) { |
1681 | len = min(size - pos, TI_DOWNLOAD_MAX_PACKET_SIZE); | |
1682 | status = usb_bulk_msg(dev, pipe, buffer + pos, len, | |
1683 | &done, 1000); | |
1da177e4 LT |
1684 | if (status) |
1685 | break; | |
1686 | } | |
95da310e AC |
1687 | return status; |
1688 | } | |
1da177e4 | 1689 | |
05a3d905 | 1690 | static int ti_download_firmware(struct ti_device *tdev) |
95da310e | 1691 | { |
05a3d905 | 1692 | int status; |
95da310e AC |
1693 | int buffer_size; |
1694 | __u8 *buffer; | |
1695 | struct usb_device *dev = tdev->td_serial->dev; | |
1696 | unsigned int pipe = usb_sndbulkpipe(dev, | |
1697 | tdev->td_serial->port[0]->bulk_out_endpointAddress); | |
1698 | const struct firmware *fw_p; | |
1699 | char buf[32]; | |
1da177e4 | 1700 | |
05a3d905 CA |
1701 | /* try ID specific firmware first, then try generic firmware */ |
1702 | sprintf(buf, "ti_usb-v%04x-p%04x.fw", dev->descriptor.idVendor, | |
1703 | dev->descriptor.idProduct); | |
1704 | if ((status = request_firmware(&fw_p, buf, &dev->dev)) != 0) { | |
cb7a7c6a CA |
1705 | buf[0] = '\0'; |
1706 | if (dev->descriptor.idVendor == MTS_VENDOR_ID) { | |
1707 | switch (dev->descriptor.idProduct) { | |
1708 | case MTS_CDMA_PRODUCT_ID: | |
1709 | strcpy(buf, "mts_cdma.fw"); | |
1710 | break; | |
1711 | case MTS_GSM_PRODUCT_ID: | |
1712 | strcpy(buf, "mts_gsm.fw"); | |
1713 | break; | |
1714 | case MTS_EDGE_PRODUCT_ID: | |
1715 | strcpy(buf, "mts_edge.fw"); | |
1716 | break; | |
1717 | } | |
1718 | } | |
1719 | if (buf[0] == '\0') { | |
1720 | if (tdev->td_is_3410) | |
1721 | strcpy(buf, "ti_3410.fw"); | |
1722 | else | |
1723 | strcpy(buf, "ti_5052.fw"); | |
1724 | } | |
05a3d905 CA |
1725 | status = request_firmware(&fw_p, buf, &dev->dev); |
1726 | } | |
1727 | if (status) { | |
95da310e AC |
1728 | dev_err(&dev->dev, "%s - firmware not found\n", __func__); |
1729 | return -ENOENT; | |
1730 | } | |
1731 | if (fw_p->size > TI_FIRMWARE_BUF_SIZE) { | |
1732 | dev_err(&dev->dev, "%s - firmware too large\n", __func__); | |
1733 | return -ENOENT; | |
1734 | } | |
1735 | ||
1736 | buffer_size = TI_FIRMWARE_BUF_SIZE + sizeof(struct ti_firmware_header); | |
1737 | buffer = kmalloc(buffer_size, GFP_KERNEL); | |
1738 | if (buffer) { | |
1739 | memcpy(buffer, fw_p->data, fw_p->size); | |
1740 | memset(buffer + fw_p->size, 0xff, buffer_size - fw_p->size); | |
2bcbe4c1 | 1741 | status = ti_do_download(dev, pipe, buffer, fw_p->size); |
95da310e | 1742 | kfree(buffer); |
05a3d905 CA |
1743 | } else { |
1744 | status = -ENOMEM; | |
95da310e AC |
1745 | } |
1746 | release_firmware(fw_p); | |
1da177e4 | 1747 | if (status) { |
a30fa793 AC |
1748 | dev_err(&dev->dev, "%s - error downloading firmware, %d\n", |
1749 | __func__, status); | |
1da177e4 LT |
1750 | return status; |
1751 | } | |
1752 | ||
441b62c1 | 1753 | dbg("%s - download successful", __func__); |
1da177e4 LT |
1754 | |
1755 | return 0; | |
1756 | } | |
1757 | ||
1758 | ||
1759 | /* Circular Buffer Functions */ | |
1760 | ||
1761 | /* | |
1762 | * ti_buf_alloc | |
1763 | * | |
1764 | * Allocate a circular buffer and all associated memory. | |
1765 | */ | |
1766 | ||
1767 | static struct circ_buf *ti_buf_alloc(void) | |
1768 | { | |
1769 | struct circ_buf *cb; | |
1770 | ||
5cbded58 | 1771 | cb = kmalloc(sizeof(struct circ_buf), GFP_KERNEL); |
1da177e4 LT |
1772 | if (cb == NULL) |
1773 | return NULL; | |
1774 | ||
1775 | cb->buf = kmalloc(TI_WRITE_BUF_SIZE, GFP_KERNEL); | |
1776 | if (cb->buf == NULL) { | |
1777 | kfree(cb); | |
1778 | return NULL; | |
1779 | } | |
1780 | ||
1781 | ti_buf_clear(cb); | |
1782 | ||
1783 | return cb; | |
1784 | } | |
1785 | ||
1786 | ||
1787 | /* | |
1788 | * ti_buf_free | |
1789 | * | |
1790 | * Free the buffer and all associated memory. | |
1791 | */ | |
1792 | ||
1793 | static void ti_buf_free(struct circ_buf *cb) | |
1794 | { | |
1795 | kfree(cb->buf); | |
1796 | kfree(cb); | |
1797 | } | |
1798 | ||
1799 | ||
1800 | /* | |
1801 | * ti_buf_clear | |
1802 | * | |
1803 | * Clear out all data in the circular buffer. | |
1804 | */ | |
1805 | ||
1806 | static void ti_buf_clear(struct circ_buf *cb) | |
1807 | { | |
1808 | cb->head = cb->tail = 0; | |
1809 | } | |
1810 | ||
1811 | ||
1812 | /* | |
1813 | * ti_buf_data_avail | |
1814 | * | |
1815 | * Return the number of bytes of data available in the circular | |
1816 | * buffer. | |
1817 | */ | |
1818 | ||
1819 | static int ti_buf_data_avail(struct circ_buf *cb) | |
1820 | { | |
a30fa793 | 1821 | return CIRC_CNT(cb->head, cb->tail, TI_WRITE_BUF_SIZE); |
1da177e4 LT |
1822 | } |
1823 | ||
1824 | ||
1825 | /* | |
1826 | * ti_buf_space_avail | |
1827 | * | |
1828 | * Return the number of bytes of space available in the circular | |
1829 | * buffer. | |
1830 | */ | |
1831 | ||
1832 | static int ti_buf_space_avail(struct circ_buf *cb) | |
1833 | { | |
a30fa793 | 1834 | return CIRC_SPACE(cb->head, cb->tail, TI_WRITE_BUF_SIZE); |
1da177e4 LT |
1835 | } |
1836 | ||
1837 | ||
1838 | /* | |
1839 | * ti_buf_put | |
1840 | * | |
1841 | * Copy data data from a user buffer and put it into the circular buffer. | |
1842 | * Restrict to the amount of space available. | |
1843 | * | |
1844 | * Return the number of bytes copied. | |
1845 | */ | |
1846 | ||
1847 | static int ti_buf_put(struct circ_buf *cb, const char *buf, int count) | |
1848 | { | |
1849 | int c, ret = 0; | |
1850 | ||
1851 | while (1) { | |
1852 | c = CIRC_SPACE_TO_END(cb->head, cb->tail, TI_WRITE_BUF_SIZE); | |
1853 | if (count < c) | |
1854 | c = count; | |
1855 | if (c <= 0) | |
1856 | break; | |
1857 | memcpy(cb->buf + cb->head, buf, c); | |
1858 | cb->head = (cb->head + c) & (TI_WRITE_BUF_SIZE-1); | |
1859 | buf += c; | |
1860 | count -= c; | |
1861 | ret += c; | |
1862 | } | |
1863 | ||
1864 | return ret; | |
1865 | } | |
1866 | ||
1867 | ||
1868 | /* | |
1869 | * ti_buf_get | |
1870 | * | |
1871 | * Get data from the circular buffer and copy to the given buffer. | |
1872 | * Restrict to the amount of data available. | |
1873 | * | |
1874 | * Return the number of bytes copied. | |
1875 | */ | |
1876 | ||
1877 | static int ti_buf_get(struct circ_buf *cb, char *buf, int count) | |
1878 | { | |
1879 | int c, ret = 0; | |
1880 | ||
1881 | while (1) { | |
1882 | c = CIRC_CNT_TO_END(cb->head, cb->tail, TI_WRITE_BUF_SIZE); | |
1883 | if (count < c) | |
1884 | c = count; | |
1885 | if (c <= 0) | |
1886 | break; | |
1887 | memcpy(buf, cb->buf + cb->tail, c); | |
1888 | cb->tail = (cb->tail + c) & (TI_WRITE_BUF_SIZE-1); | |
1889 | buf += c; | |
1890 | count -= c; | |
1891 | ret += c; | |
1892 | } | |
1893 | ||
1894 | return ret; | |
1895 | } |