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 | ||
1da177e4 LT |
53 | #define TI_DEFAULT_CLOSING_WAIT 4000 /* in .01 secs */ |
54 | ||
55 | /* supported setserial flags */ | |
2400a2bf | 56 | #define TI_SET_SERIAL_FLAGS 0 |
1da177e4 LT |
57 | |
58 | /* read urb states */ | |
59 | #define TI_READ_URB_RUNNING 0 | |
60 | #define TI_READ_URB_STOPPING 1 | |
61 | #define TI_READ_URB_STOPPED 2 | |
62 | ||
63 | #define TI_EXTRA_VID_PID_COUNT 5 | |
64 | ||
65 | ||
66 | /* Structures */ | |
67 | ||
68 | struct ti_port { | |
69 | int tp_is_open; | |
70 | __u8 tp_msr; | |
71 | __u8 tp_lsr; | |
72 | __u8 tp_shadow_mcr; | |
73 | __u8 tp_uart_mode; /* 232 or 485 modes */ | |
74 | unsigned int tp_uart_base_addr; | |
75 | int tp_flags; | |
76 | int tp_closing_wait;/* in .01 secs */ | |
77 | struct async_icount tp_icount; | |
78 | wait_queue_head_t tp_msr_wait; /* wait for msr change */ | |
79 | wait_queue_head_t tp_write_wait; | |
80 | struct ti_device *tp_tdev; | |
81 | struct usb_serial_port *tp_port; | |
82 | spinlock_t tp_lock; | |
83 | int tp_read_urb_state; | |
84 | int tp_write_urb_in_use; | |
85 | struct circ_buf *tp_write_buf; | |
86 | }; | |
87 | ||
88 | struct ti_device { | |
9da0068a | 89 | struct mutex td_open_close_lock; |
1da177e4 LT |
90 | int td_open_port_count; |
91 | struct usb_serial *td_serial; | |
92 | int td_is_3410; | |
93 | int td_urb_error; | |
94 | }; | |
95 | ||
96 | ||
97 | /* Function Declarations */ | |
98 | ||
99 | static int ti_startup(struct usb_serial *serial); | |
f9c99bb8 | 100 | static void ti_release(struct usb_serial *serial); |
a509a7e4 | 101 | static int ti_open(struct tty_struct *tty, struct usb_serial_port *port); |
335f8514 | 102 | static void ti_close(struct usb_serial_port *port); |
95da310e | 103 | static int ti_write(struct tty_struct *tty, struct usb_serial_port *port, |
a30fa793 | 104 | const unsigned char *data, int count); |
95da310e AC |
105 | static int ti_write_room(struct tty_struct *tty); |
106 | static int ti_chars_in_buffer(struct tty_struct *tty); | |
107 | static void ti_throttle(struct tty_struct *tty); | |
108 | static void ti_unthrottle(struct tty_struct *tty); | |
a30fa793 AC |
109 | static int ti_ioctl(struct tty_struct *tty, struct file *file, |
110 | unsigned int cmd, unsigned long arg); | |
111 | static void ti_set_termios(struct tty_struct *tty, | |
112 | struct usb_serial_port *port, struct ktermios *old_termios); | |
95da310e AC |
113 | static int ti_tiocmget(struct tty_struct *tty, struct file *file); |
114 | static int ti_tiocmset(struct tty_struct *tty, struct file *file, | |
a30fa793 | 115 | unsigned int set, unsigned int clear); |
95da310e | 116 | static void ti_break(struct tty_struct *tty, int break_state); |
7d12e780 DH |
117 | static void ti_interrupt_callback(struct urb *urb); |
118 | static void ti_bulk_in_callback(struct urb *urb); | |
119 | static void ti_bulk_out_callback(struct urb *urb); | |
1da177e4 LT |
120 | |
121 | static void ti_recv(struct device *dev, struct tty_struct *tty, | |
122 | unsigned char *data, int length); | |
123 | static void ti_send(struct ti_port *tport); | |
124 | static int ti_set_mcr(struct ti_port *tport, unsigned int mcr); | |
125 | static int ti_get_lsr(struct ti_port *tport); | |
126 | static int ti_get_serial_info(struct ti_port *tport, | |
127 | struct serial_struct __user *ret_arg); | |
4a90f09b | 128 | static int ti_set_serial_info(struct tty_struct *tty, struct ti_port *tport, |
1da177e4 LT |
129 | struct serial_struct __user *new_arg); |
130 | static void ti_handle_new_msr(struct ti_port *tport, __u8 msr); | |
131 | ||
132 | static void ti_drain(struct ti_port *tport, unsigned long timeout, int flush); | |
133 | ||
134 | static void ti_stop_read(struct ti_port *tport, struct tty_struct *tty); | |
135 | static int ti_restart_read(struct ti_port *tport, struct tty_struct *tty); | |
136 | ||
137 | static int ti_command_out_sync(struct ti_device *tdev, __u8 command, | |
138 | __u16 moduleid, __u16 value, __u8 *data, int size); | |
139 | static int ti_command_in_sync(struct ti_device *tdev, __u8 command, | |
140 | __u16 moduleid, __u16 value, __u8 *data, int size); | |
141 | ||
142 | static int ti_write_byte(struct ti_device *tdev, unsigned long addr, | |
143 | __u8 mask, __u8 byte); | |
144 | ||
05a3d905 | 145 | static int ti_download_firmware(struct ti_device *tdev); |
1da177e4 LT |
146 | |
147 | /* circular buffer */ | |
148 | static struct circ_buf *ti_buf_alloc(void); | |
149 | static void ti_buf_free(struct circ_buf *cb); | |
150 | static void ti_buf_clear(struct circ_buf *cb); | |
151 | static int ti_buf_data_avail(struct circ_buf *cb); | |
152 | static int ti_buf_space_avail(struct circ_buf *cb); | |
153 | static int ti_buf_put(struct circ_buf *cb, const char *buf, int count); | |
154 | static int ti_buf_get(struct circ_buf *cb, char *buf, int count); | |
155 | ||
156 | ||
157 | /* Data */ | |
158 | ||
159 | /* module parameters */ | |
160 | static int debug; | |
1da177e4 LT |
161 | static int closing_wait = TI_DEFAULT_CLOSING_WAIT; |
162 | static ushort vendor_3410[TI_EXTRA_VID_PID_COUNT]; | |
64a6f950 | 163 | static unsigned int vendor_3410_count; |
1da177e4 | 164 | static ushort product_3410[TI_EXTRA_VID_PID_COUNT]; |
64a6f950 | 165 | static unsigned int product_3410_count; |
1da177e4 | 166 | static ushort vendor_5052[TI_EXTRA_VID_PID_COUNT]; |
64a6f950 | 167 | static unsigned int vendor_5052_count; |
1da177e4 | 168 | static ushort product_5052[TI_EXTRA_VID_PID_COUNT]; |
64a6f950 | 169 | static unsigned int product_5052_count; |
1da177e4 LT |
170 | |
171 | /* supported devices */ | |
172 | /* the array dimension is the number of default entries plus */ | |
173 | /* TI_EXTRA_VID_PID_COUNT user defined entries plus 1 terminating */ | |
174 | /* null entry */ | |
cdc04834 | 175 | static struct usb_device_id ti_id_table_3410[13+TI_EXTRA_VID_PID_COUNT+1] = { |
1da177e4 | 176 | { USB_DEVICE(TI_VENDOR_ID, TI_3410_PRODUCT_ID) }, |
1f54a6ae | 177 | { USB_DEVICE(TI_VENDOR_ID, TI_3410_EZ430_ID) }, |
cb7a7c6a CA |
178 | { USB_DEVICE(MTS_VENDOR_ID, MTS_GSM_NO_FW_PRODUCT_ID) }, |
179 | { USB_DEVICE(MTS_VENDOR_ID, MTS_CDMA_NO_FW_PRODUCT_ID) }, | |
180 | { USB_DEVICE(MTS_VENDOR_ID, MTS_CDMA_PRODUCT_ID) }, | |
181 | { USB_DEVICE(MTS_VENDOR_ID, MTS_GSM_PRODUCT_ID) }, | |
182 | { USB_DEVICE(MTS_VENDOR_ID, MTS_EDGE_PRODUCT_ID) }, | |
cdc04834 AM |
183 | { USB_DEVICE(MTS_VENDOR_ID, MTS_MT9234MU_PRODUCT_ID) }, |
184 | { USB_DEVICE(MTS_VENDOR_ID, MTS_MT9234ZBA_PRODUCT_ID) }, | |
185 | { USB_DEVICE(MTS_VENDOR_ID, MTS_MT9234ZBAOLD_PRODUCT_ID) }, | |
1a1fab51 | 186 | { USB_DEVICE(IBM_VENDOR_ID, IBM_4543_PRODUCT_ID) }, |
97dcf041 ON |
187 | { USB_DEVICE(IBM_VENDOR_ID, IBM_454B_PRODUCT_ID) }, |
188 | { USB_DEVICE(IBM_VENDOR_ID, IBM_454C_PRODUCT_ID) }, | |
1da177e4 LT |
189 | }; |
190 | ||
97dcf041 | 191 | static struct usb_device_id ti_id_table_5052[5+TI_EXTRA_VID_PID_COUNT+1] = { |
1da177e4 LT |
192 | { USB_DEVICE(TI_VENDOR_ID, TI_5052_BOOT_PRODUCT_ID) }, |
193 | { USB_DEVICE(TI_VENDOR_ID, TI_5152_BOOT_PRODUCT_ID) }, | |
194 | { USB_DEVICE(TI_VENDOR_ID, TI_5052_EEPROM_PRODUCT_ID) }, | |
195 | { USB_DEVICE(TI_VENDOR_ID, TI_5052_FIRMWARE_PRODUCT_ID) }, | |
196 | }; | |
197 | ||
cdc04834 | 198 | static struct usb_device_id ti_id_table_combined[17+2*TI_EXTRA_VID_PID_COUNT+1] = { |
1da177e4 | 199 | { USB_DEVICE(TI_VENDOR_ID, TI_3410_PRODUCT_ID) }, |
1f54a6ae | 200 | { USB_DEVICE(TI_VENDOR_ID, TI_3410_EZ430_ID) }, |
cb7a7c6a CA |
201 | { USB_DEVICE(MTS_VENDOR_ID, MTS_GSM_NO_FW_PRODUCT_ID) }, |
202 | { USB_DEVICE(MTS_VENDOR_ID, MTS_CDMA_NO_FW_PRODUCT_ID) }, | |
203 | { USB_DEVICE(MTS_VENDOR_ID, MTS_CDMA_PRODUCT_ID) }, | |
204 | { USB_DEVICE(MTS_VENDOR_ID, MTS_GSM_PRODUCT_ID) }, | |
205 | { USB_DEVICE(MTS_VENDOR_ID, MTS_EDGE_PRODUCT_ID) }, | |
cdc04834 AM |
206 | { USB_DEVICE(MTS_VENDOR_ID, MTS_MT9234MU_PRODUCT_ID) }, |
207 | { USB_DEVICE(MTS_VENDOR_ID, MTS_MT9234ZBA_PRODUCT_ID) }, | |
208 | { USB_DEVICE(MTS_VENDOR_ID, MTS_MT9234ZBAOLD_PRODUCT_ID) }, | |
1da177e4 LT |
209 | { USB_DEVICE(TI_VENDOR_ID, TI_5052_BOOT_PRODUCT_ID) }, |
210 | { USB_DEVICE(TI_VENDOR_ID, TI_5152_BOOT_PRODUCT_ID) }, | |
211 | { USB_DEVICE(TI_VENDOR_ID, TI_5052_EEPROM_PRODUCT_ID) }, | |
212 | { USB_DEVICE(TI_VENDOR_ID, TI_5052_FIRMWARE_PRODUCT_ID) }, | |
1a1fab51 | 213 | { USB_DEVICE(IBM_VENDOR_ID, IBM_4543_PRODUCT_ID) }, |
97dcf041 ON |
214 | { USB_DEVICE(IBM_VENDOR_ID, IBM_454B_PRODUCT_ID) }, |
215 | { USB_DEVICE(IBM_VENDOR_ID, IBM_454C_PRODUCT_ID) }, | |
1da177e4 LT |
216 | { } |
217 | }; | |
218 | ||
219 | static struct usb_driver ti_usb_driver = { | |
1da177e4 LT |
220 | .name = "ti_usb_3410_5052", |
221 | .probe = usb_serial_probe, | |
222 | .disconnect = usb_serial_disconnect, | |
223 | .id_table = ti_id_table_combined, | |
ba9dc657 | 224 | .no_dynamic_id = 1, |
1da177e4 LT |
225 | }; |
226 | ||
ea65370d | 227 | static struct usb_serial_driver ti_1port_device = { |
18fcac35 | 228 | .driver = { |
269bda1c GKH |
229 | .owner = THIS_MODULE, |
230 | .name = "ti_usb_3410_5052_1", | |
18fcac35 | 231 | }, |
269bda1c | 232 | .description = "TI USB 3410 1 port adapter", |
d9b1b787 | 233 | .usb_driver = &ti_usb_driver, |
1da177e4 | 234 | .id_table = ti_id_table_3410, |
1da177e4 LT |
235 | .num_ports = 1, |
236 | .attach = ti_startup, | |
f9c99bb8 | 237 | .release = ti_release, |
1da177e4 LT |
238 | .open = ti_open, |
239 | .close = ti_close, | |
240 | .write = ti_write, | |
241 | .write_room = ti_write_room, | |
242 | .chars_in_buffer = ti_chars_in_buffer, | |
243 | .throttle = ti_throttle, | |
244 | .unthrottle = ti_unthrottle, | |
245 | .ioctl = ti_ioctl, | |
246 | .set_termios = ti_set_termios, | |
247 | .tiocmget = ti_tiocmget, | |
248 | .tiocmset = ti_tiocmset, | |
249 | .break_ctl = ti_break, | |
250 | .read_int_callback = ti_interrupt_callback, | |
251 | .read_bulk_callback = ti_bulk_in_callback, | |
252 | .write_bulk_callback = ti_bulk_out_callback, | |
253 | }; | |
254 | ||
ea65370d | 255 | static struct usb_serial_driver ti_2port_device = { |
18fcac35 | 256 | .driver = { |
269bda1c GKH |
257 | .owner = THIS_MODULE, |
258 | .name = "ti_usb_3410_5052_2", | |
18fcac35 | 259 | }, |
269bda1c | 260 | .description = "TI USB 5052 2 port adapter", |
d9b1b787 | 261 | .usb_driver = &ti_usb_driver, |
1da177e4 | 262 | .id_table = ti_id_table_5052, |
1da177e4 LT |
263 | .num_ports = 2, |
264 | .attach = ti_startup, | |
f9c99bb8 | 265 | .release = ti_release, |
1da177e4 LT |
266 | .open = ti_open, |
267 | .close = ti_close, | |
268 | .write = ti_write, | |
269 | .write_room = ti_write_room, | |
270 | .chars_in_buffer = ti_chars_in_buffer, | |
271 | .throttle = ti_throttle, | |
272 | .unthrottle = ti_unthrottle, | |
273 | .ioctl = ti_ioctl, | |
274 | .set_termios = ti_set_termios, | |
275 | .tiocmget = ti_tiocmget, | |
276 | .tiocmset = ti_tiocmset, | |
277 | .break_ctl = ti_break, | |
278 | .read_int_callback = ti_interrupt_callback, | |
279 | .read_bulk_callback = ti_bulk_in_callback, | |
280 | .write_bulk_callback = ti_bulk_out_callback, | |
281 | }; | |
282 | ||
283 | ||
284 | /* Module */ | |
285 | ||
286 | MODULE_AUTHOR(TI_DRIVER_AUTHOR); | |
287 | MODULE_DESCRIPTION(TI_DRIVER_DESC); | |
288 | MODULE_VERSION(TI_DRIVER_VERSION); | |
289 | MODULE_LICENSE("GPL"); | |
290 | ||
5f24e2d6 DW |
291 | MODULE_FIRMWARE("ti_3410.fw"); |
292 | MODULE_FIRMWARE("ti_5052.fw"); | |
7df52316 CA |
293 | MODULE_FIRMWARE("mts_cdma.fw"); |
294 | MODULE_FIRMWARE("mts_gsm.fw"); | |
295 | MODULE_FIRMWARE("mts_edge.fw"); | |
cdc04834 AM |
296 | MODULE_FIRMWARE("mts_mt9234mu.fw"); |
297 | MODULE_FIRMWARE("mts_mt9234zba.fw"); | |
5f24e2d6 | 298 | |
1da177e4 LT |
299 | module_param(debug, bool, S_IRUGO | S_IWUSR); |
300 | MODULE_PARM_DESC(debug, "Enable debugging, 0=no, 1=yes"); | |
301 | ||
1da177e4 | 302 | module_param(closing_wait, int, S_IRUGO | S_IWUSR); |
a30fa793 AC |
303 | MODULE_PARM_DESC(closing_wait, |
304 | "Maximum wait for data to drain in close, in .01 secs, default is 4000"); | |
1da177e4 LT |
305 | |
306 | module_param_array(vendor_3410, ushort, &vendor_3410_count, S_IRUGO); | |
a30fa793 AC |
307 | MODULE_PARM_DESC(vendor_3410, |
308 | "Vendor ids for 3410 based devices, 1-5 short integers"); | |
1da177e4 | 309 | module_param_array(product_3410, ushort, &product_3410_count, S_IRUGO); |
a30fa793 AC |
310 | MODULE_PARM_DESC(product_3410, |
311 | "Product ids for 3410 based devices, 1-5 short integers"); | |
1da177e4 | 312 | module_param_array(vendor_5052, ushort, &vendor_5052_count, S_IRUGO); |
a30fa793 AC |
313 | MODULE_PARM_DESC(vendor_5052, |
314 | "Vendor ids for 5052 based devices, 1-5 short integers"); | |
1da177e4 | 315 | module_param_array(product_5052, ushort, &product_5052_count, S_IRUGO); |
a30fa793 AC |
316 | MODULE_PARM_DESC(product_5052, |
317 | "Product ids for 5052 based devices, 1-5 short integers"); | |
1da177e4 LT |
318 | |
319 | MODULE_DEVICE_TABLE(usb, ti_id_table_combined); | |
320 | ||
321 | ||
322 | /* Functions */ | |
323 | ||
324 | static int __init ti_init(void) | |
325 | { | |
05a3d905 | 326 | int i, j, c; |
1da177e4 LT |
327 | int ret; |
328 | ||
1da177e4 | 329 | /* insert extra vendor and product ids */ |
05a3d905 | 330 | c = ARRAY_SIZE(ti_id_table_combined) - 2 * TI_EXTRA_VID_PID_COUNT - 1; |
52950ed4 | 331 | j = ARRAY_SIZE(ti_id_table_3410) - TI_EXTRA_VID_PID_COUNT - 1; |
05a3d905 | 332 | for (i = 0; i < min(vendor_3410_count, product_3410_count); i++, j++, c++) { |
1da177e4 LT |
333 | ti_id_table_3410[j].idVendor = vendor_3410[i]; |
334 | ti_id_table_3410[j].idProduct = product_3410[i]; | |
335 | ti_id_table_3410[j].match_flags = USB_DEVICE_ID_MATCH_DEVICE; | |
05a3d905 CA |
336 | ti_id_table_combined[c].idVendor = vendor_3410[i]; |
337 | ti_id_table_combined[c].idProduct = product_3410[i]; | |
338 | ti_id_table_combined[c].match_flags = USB_DEVICE_ID_MATCH_DEVICE; | |
1da177e4 | 339 | } |
52950ed4 | 340 | j = ARRAY_SIZE(ti_id_table_5052) - TI_EXTRA_VID_PID_COUNT - 1; |
05a3d905 | 341 | for (i = 0; i < min(vendor_5052_count, product_5052_count); i++, j++, c++) { |
1da177e4 LT |
342 | ti_id_table_5052[j].idVendor = vendor_5052[i]; |
343 | ti_id_table_5052[j].idProduct = product_5052[i]; | |
344 | ti_id_table_5052[j].match_flags = USB_DEVICE_ID_MATCH_DEVICE; | |
05a3d905 CA |
345 | ti_id_table_combined[c].idVendor = vendor_5052[i]; |
346 | ti_id_table_combined[c].idProduct = product_5052[i]; | |
347 | ti_id_table_combined[c].match_flags = USB_DEVICE_ID_MATCH_DEVICE; | |
1da177e4 LT |
348 | } |
349 | ||
350 | ret = usb_serial_register(&ti_1port_device); | |
351 | if (ret) | |
352 | goto failed_1port; | |
353 | ret = usb_serial_register(&ti_2port_device); | |
354 | if (ret) | |
355 | goto failed_2port; | |
356 | ||
357 | ret = usb_register(&ti_usb_driver); | |
358 | if (ret) | |
359 | goto failed_usb; | |
360 | ||
c197a8db GKH |
361 | printk(KERN_INFO KBUILD_MODNAME ": " TI_DRIVER_VERSION ":" |
362 | TI_DRIVER_DESC "\n"); | |
1da177e4 LT |
363 | |
364 | return 0; | |
365 | ||
366 | failed_usb: | |
367 | usb_serial_deregister(&ti_2port_device); | |
368 | failed_2port: | |
369 | usb_serial_deregister(&ti_1port_device); | |
370 | failed_1port: | |
371 | return ret; | |
372 | } | |
373 | ||
374 | ||
375 | static void __exit ti_exit(void) | |
376 | { | |
377 | usb_serial_deregister(&ti_1port_device); | |
378 | usb_serial_deregister(&ti_2port_device); | |
379 | usb_deregister(&ti_usb_driver); | |
380 | } | |
381 | ||
382 | ||
383 | module_init(ti_init); | |
384 | module_exit(ti_exit); | |
385 | ||
386 | ||
387 | static int ti_startup(struct usb_serial *serial) | |
388 | { | |
389 | struct ti_device *tdev; | |
390 | struct ti_port *tport; | |
391 | struct usb_device *dev = serial->dev; | |
392 | int status; | |
393 | int i; | |
394 | ||
395 | ||
396 | dbg("%s - product 0x%4X, num configurations %d, configuration value %d", | |
441b62c1 | 397 | __func__, le16_to_cpu(dev->descriptor.idProduct), |
1da177e4 LT |
398 | dev->descriptor.bNumConfigurations, |
399 | dev->actconfig->desc.bConfigurationValue); | |
400 | ||
401 | /* create device structure */ | |
80b6ca48 | 402 | tdev = kzalloc(sizeof(struct ti_device), GFP_KERNEL); |
1da177e4 | 403 | if (tdev == NULL) { |
441b62c1 | 404 | dev_err(&dev->dev, "%s - out of memory\n", __func__); |
1da177e4 LT |
405 | return -ENOMEM; |
406 | } | |
9da0068a | 407 | mutex_init(&tdev->td_open_close_lock); |
1da177e4 LT |
408 | tdev->td_serial = serial; |
409 | usb_set_serial_data(serial, tdev); | |
410 | ||
411 | /* determine device type */ | |
412 | if (usb_match_id(serial->interface, ti_id_table_3410)) | |
413 | tdev->td_is_3410 = 1; | |
a30fa793 AC |
414 | dbg("%s - device type is %s", __func__, |
415 | tdev->td_is_3410 ? "3410" : "5052"); | |
1da177e4 LT |
416 | |
417 | /* if we have only 1 configuration, download firmware */ | |
418 | if (dev->descriptor.bNumConfigurations == 1) { | |
05a3d905 | 419 | if ((status = ti_download_firmware(tdev)) != 0) |
1da177e4 LT |
420 | goto free_tdev; |
421 | ||
422 | /* 3410 must be reset, 5052 resets itself */ | |
423 | if (tdev->td_is_3410) { | |
424 | msleep_interruptible(100); | |
425 | usb_reset_device(dev); | |
426 | } | |
427 | ||
428 | status = -ENODEV; | |
429 | goto free_tdev; | |
a30fa793 | 430 | } |
1da177e4 | 431 | |
413ba6fb | 432 | /* the second configuration must be set */ |
1da177e4 | 433 | if (dev->actconfig->desc.bConfigurationValue == TI_BOOT_CONFIG) { |
413ba6fb ON |
434 | status = usb_driver_set_configuration(dev, TI_ACTIVE_CONFIG); |
435 | status = status ? status : -ENODEV; | |
1da177e4 LT |
436 | goto free_tdev; |
437 | } | |
438 | ||
439 | /* set up port structures */ | |
440 | for (i = 0; i < serial->num_ports; ++i) { | |
7ac9da10 | 441 | tport = kzalloc(sizeof(struct ti_port), GFP_KERNEL); |
1da177e4 | 442 | if (tport == NULL) { |
441b62c1 | 443 | dev_err(&dev->dev, "%s - out of memory\n", __func__); |
1da177e4 LT |
444 | status = -ENOMEM; |
445 | goto free_tports; | |
446 | } | |
1da177e4 | 447 | spin_lock_init(&tport->tp_lock); |
a30fa793 AC |
448 | tport->tp_uart_base_addr = (i == 0 ? |
449 | TI_UART1_BASE_ADDR : TI_UART2_BASE_ADDR); | |
1da177e4 LT |
450 | tport->tp_closing_wait = closing_wait; |
451 | init_waitqueue_head(&tport->tp_msr_wait); | |
452 | init_waitqueue_head(&tport->tp_write_wait); | |
453 | tport->tp_write_buf = ti_buf_alloc(); | |
454 | if (tport->tp_write_buf == NULL) { | |
441b62c1 | 455 | dev_err(&dev->dev, "%s - out of memory\n", __func__); |
1da177e4 LT |
456 | kfree(tport); |
457 | status = -ENOMEM; | |
458 | goto free_tports; | |
459 | } | |
460 | tport->tp_port = serial->port[i]; | |
461 | tport->tp_tdev = tdev; | |
462 | usb_set_serial_port_data(serial->port[i], tport); | |
463 | tport->tp_uart_mode = 0; /* default is RS232 */ | |
464 | } | |
a30fa793 | 465 | |
1da177e4 LT |
466 | return 0; |
467 | ||
468 | free_tports: | |
a30fa793 | 469 | for (--i; i >= 0; --i) { |
1da177e4 LT |
470 | tport = usb_get_serial_port_data(serial->port[i]); |
471 | ti_buf_free(tport->tp_write_buf); | |
472 | kfree(tport); | |
473 | usb_set_serial_port_data(serial->port[i], NULL); | |
474 | } | |
475 | free_tdev: | |
476 | kfree(tdev); | |
477 | usb_set_serial_data(serial, NULL); | |
478 | return status; | |
479 | } | |
480 | ||
481 | ||
f9c99bb8 | 482 | static void ti_release(struct usb_serial *serial) |
1da177e4 LT |
483 | { |
484 | int i; | |
485 | struct ti_device *tdev = usb_get_serial_data(serial); | |
486 | struct ti_port *tport; | |
487 | ||
441b62c1 | 488 | dbg("%s", __func__); |
1da177e4 | 489 | |
a30fa793 | 490 | for (i = 0; i < serial->num_ports; ++i) { |
1da177e4 LT |
491 | tport = usb_get_serial_port_data(serial->port[i]); |
492 | if (tport) { | |
493 | ti_buf_free(tport->tp_write_buf); | |
494 | kfree(tport); | |
1da177e4 LT |
495 | } |
496 | } | |
497 | ||
1bc3c9e1 | 498 | kfree(tdev); |
1da177e4 LT |
499 | } |
500 | ||
501 | ||
a509a7e4 | 502 | static int ti_open(struct tty_struct *tty, struct usb_serial_port *port) |
1da177e4 LT |
503 | { |
504 | struct ti_port *tport = usb_get_serial_port_data(port); | |
505 | struct ti_device *tdev; | |
506 | struct usb_device *dev; | |
507 | struct urb *urb; | |
508 | int port_number; | |
509 | int status; | |
a30fa793 AC |
510 | __u16 open_settings = (__u8)(TI_PIPE_MODE_CONTINOUS | |
511 | TI_PIPE_TIMEOUT_ENABLE | | |
1da177e4 LT |
512 | (TI_TRANSFER_TIMEOUT << 2)); |
513 | ||
441b62c1 | 514 | dbg("%s - port %d", __func__, port->number); |
1da177e4 LT |
515 | |
516 | if (tport == NULL) | |
517 | return -ENODEV; | |
518 | ||
519 | dev = port->serial->dev; | |
520 | tdev = tport->tp_tdev; | |
521 | ||
522 | /* only one open on any port on a device at a time */ | |
9da0068a | 523 | if (mutex_lock_interruptible(&tdev->td_open_close_lock)) |
1da177e4 LT |
524 | return -ERESTARTSYS; |
525 | ||
1da177e4 LT |
526 | port_number = port->number - port->serial->minor; |
527 | ||
528 | memset(&(tport->tp_icount), 0x00, sizeof(tport->tp_icount)); | |
529 | ||
530 | tport->tp_msr = 0; | |
531 | tport->tp_shadow_mcr |= (TI_MCR_RTS | TI_MCR_DTR); | |
532 | ||
533 | /* start interrupt urb the first time a port is opened on this device */ | |
534 | if (tdev->td_open_port_count == 0) { | |
441b62c1 | 535 | dbg("%s - start interrupt in urb", __func__); |
1da177e4 LT |
536 | urb = tdev->td_serial->port[0]->interrupt_in_urb; |
537 | if (!urb) { | |
a30fa793 AC |
538 | dev_err(&port->dev, "%s - no interrupt urb\n", |
539 | __func__); | |
1da177e4 | 540 | status = -EINVAL; |
9da0068a | 541 | goto release_lock; |
1da177e4 LT |
542 | } |
543 | urb->complete = ti_interrupt_callback; | |
544 | urb->context = tdev; | |
545 | urb->dev = dev; | |
546 | status = usb_submit_urb(urb, GFP_KERNEL); | |
547 | if (status) { | |
a30fa793 AC |
548 | dev_err(&port->dev, |
549 | "%s - submit interrupt urb failed, %d\n", | |
550 | __func__, status); | |
9da0068a | 551 | goto release_lock; |
1da177e4 LT |
552 | } |
553 | } | |
554 | ||
95da310e AC |
555 | if (tty) |
556 | ti_set_termios(tty, port, tty->termios); | |
1da177e4 | 557 | |
441b62c1 | 558 | dbg("%s - sending TI_OPEN_PORT", __func__); |
1da177e4 LT |
559 | status = ti_command_out_sync(tdev, TI_OPEN_PORT, |
560 | (__u8)(TI_UART1_PORT + port_number), open_settings, NULL, 0); | |
561 | if (status) { | |
a30fa793 AC |
562 | dev_err(&port->dev, "%s - cannot send open command, %d\n", |
563 | __func__, status); | |
1da177e4 LT |
564 | goto unlink_int_urb; |
565 | } | |
566 | ||
441b62c1 | 567 | dbg("%s - sending TI_START_PORT", __func__); |
1da177e4 LT |
568 | status = ti_command_out_sync(tdev, TI_START_PORT, |
569 | (__u8)(TI_UART1_PORT + port_number), 0, NULL, 0); | |
570 | if (status) { | |
a30fa793 AC |
571 | dev_err(&port->dev, "%s - cannot send start command, %d\n", |
572 | __func__, status); | |
1da177e4 LT |
573 | goto unlink_int_urb; |
574 | } | |
575 | ||
441b62c1 | 576 | dbg("%s - sending TI_PURGE_PORT", __func__); |
1da177e4 LT |
577 | status = ti_command_out_sync(tdev, TI_PURGE_PORT, |
578 | (__u8)(TI_UART1_PORT + port_number), TI_PURGE_INPUT, NULL, 0); | |
579 | if (status) { | |
a30fa793 AC |
580 | dev_err(&port->dev, "%s - cannot clear input buffers, %d\n", |
581 | __func__, status); | |
1da177e4 LT |
582 | goto unlink_int_urb; |
583 | } | |
584 | status = ti_command_out_sync(tdev, TI_PURGE_PORT, | |
585 | (__u8)(TI_UART1_PORT + port_number), TI_PURGE_OUTPUT, NULL, 0); | |
586 | if (status) { | |
a30fa793 AC |
587 | dev_err(&port->dev, "%s - cannot clear output buffers, %d\n", |
588 | __func__, status); | |
1da177e4 LT |
589 | goto unlink_int_urb; |
590 | } | |
591 | ||
592 | /* reset the data toggle on the bulk endpoints to work around bug in | |
593 | * host controllers where things get out of sync some times */ | |
594 | usb_clear_halt(dev, port->write_urb->pipe); | |
595 | usb_clear_halt(dev, port->read_urb->pipe); | |
596 | ||
95da310e AC |
597 | if (tty) |
598 | ti_set_termios(tty, port, tty->termios); | |
1da177e4 | 599 | |
441b62c1 | 600 | dbg("%s - sending TI_OPEN_PORT (2)", __func__); |
1da177e4 LT |
601 | status = ti_command_out_sync(tdev, TI_OPEN_PORT, |
602 | (__u8)(TI_UART1_PORT + port_number), open_settings, NULL, 0); | |
603 | if (status) { | |
a30fa793 AC |
604 | dev_err(&port->dev, "%s - cannot send open command (2), %d\n", |
605 | __func__, status); | |
1da177e4 LT |
606 | goto unlink_int_urb; |
607 | } | |
608 | ||
441b62c1 | 609 | dbg("%s - sending TI_START_PORT (2)", __func__); |
1da177e4 LT |
610 | status = ti_command_out_sync(tdev, TI_START_PORT, |
611 | (__u8)(TI_UART1_PORT + port_number), 0, NULL, 0); | |
612 | if (status) { | |
a30fa793 AC |
613 | dev_err(&port->dev, "%s - cannot send start command (2), %d\n", |
614 | __func__, status); | |
1da177e4 LT |
615 | goto unlink_int_urb; |
616 | } | |
617 | ||
618 | /* start read urb */ | |
441b62c1 | 619 | dbg("%s - start read urb", __func__); |
1da177e4 LT |
620 | urb = port->read_urb; |
621 | if (!urb) { | |
441b62c1 | 622 | dev_err(&port->dev, "%s - no read urb\n", __func__); |
1da177e4 LT |
623 | status = -EINVAL; |
624 | goto unlink_int_urb; | |
625 | } | |
626 | tport->tp_read_urb_state = TI_READ_URB_RUNNING; | |
627 | urb->complete = ti_bulk_in_callback; | |
628 | urb->context = tport; | |
629 | urb->dev = dev; | |
630 | status = usb_submit_urb(urb, GFP_KERNEL); | |
631 | if (status) { | |
a30fa793 AC |
632 | dev_err(&port->dev, "%s - submit read urb failed, %d\n", |
633 | __func__, status); | |
1da177e4 LT |
634 | goto unlink_int_urb; |
635 | } | |
636 | ||
637 | tport->tp_is_open = 1; | |
638 | ++tdev->td_open_port_count; | |
639 | ||
9da0068a | 640 | goto release_lock; |
1da177e4 LT |
641 | |
642 | unlink_int_urb: | |
643 | if (tdev->td_open_port_count == 0) | |
644 | usb_kill_urb(port->serial->port[0]->interrupt_in_urb); | |
9da0068a MK |
645 | release_lock: |
646 | mutex_unlock(&tdev->td_open_close_lock); | |
441b62c1 | 647 | dbg("%s - exit %d", __func__, status); |
1da177e4 LT |
648 | return status; |
649 | } | |
650 | ||
651 | ||
335f8514 | 652 | static void ti_close(struct usb_serial_port *port) |
1da177e4 LT |
653 | { |
654 | struct ti_device *tdev; | |
655 | struct ti_port *tport; | |
656 | int port_number; | |
657 | int status; | |
9da0068a | 658 | int do_unlock; |
1da177e4 | 659 | |
441b62c1 | 660 | dbg("%s - port %d", __func__, port->number); |
a30fa793 | 661 | |
1da177e4 LT |
662 | tdev = usb_get_serial_data(port->serial); |
663 | tport = usb_get_serial_port_data(port); | |
664 | if (tdev == NULL || tport == NULL) | |
665 | return; | |
666 | ||
667 | tport->tp_is_open = 0; | |
668 | ||
669 | ti_drain(tport, (tport->tp_closing_wait*HZ)/100, 1); | |
670 | ||
671 | usb_kill_urb(port->read_urb); | |
672 | usb_kill_urb(port->write_urb); | |
673 | tport->tp_write_urb_in_use = 0; | |
674 | ||
675 | port_number = port->number - port->serial->minor; | |
676 | ||
441b62c1 | 677 | dbg("%s - sending TI_CLOSE_PORT", __func__); |
1da177e4 LT |
678 | status = ti_command_out_sync(tdev, TI_CLOSE_PORT, |
679 | (__u8)(TI_UART1_PORT + port_number), 0, NULL, 0); | |
680 | if (status) | |
a30fa793 AC |
681 | dev_err(&port->dev, |
682 | "%s - cannot send close port command, %d\n" | |
683 | , __func__, status); | |
1da177e4 | 684 | |
9da0068a MK |
685 | /* if mutex_lock is interrupted, continue anyway */ |
686 | do_unlock = !mutex_lock_interruptible(&tdev->td_open_close_lock); | |
1da177e4 LT |
687 | --tport->tp_tdev->td_open_port_count; |
688 | if (tport->tp_tdev->td_open_port_count <= 0) { | |
689 | /* last port is closed, shut down interrupt urb */ | |
690 | usb_kill_urb(port->serial->port[0]->interrupt_in_urb); | |
691 | tport->tp_tdev->td_open_port_count = 0; | |
692 | } | |
9da0068a MK |
693 | if (do_unlock) |
694 | mutex_unlock(&tdev->td_open_close_lock); | |
1da177e4 | 695 | |
441b62c1 | 696 | dbg("%s - exit", __func__); |
1da177e4 LT |
697 | } |
698 | ||
699 | ||
95da310e AC |
700 | static int ti_write(struct tty_struct *tty, struct usb_serial_port *port, |
701 | const unsigned char *data, int count) | |
1da177e4 LT |
702 | { |
703 | struct ti_port *tport = usb_get_serial_port_data(port); | |
704 | unsigned long flags; | |
705 | ||
441b62c1 | 706 | dbg("%s - port %d", __func__, port->number); |
1da177e4 LT |
707 | |
708 | if (count == 0) { | |
441b62c1 | 709 | dbg("%s - write request of 0 bytes", __func__); |
1da177e4 LT |
710 | return 0; |
711 | } | |
712 | ||
713 | if (tport == NULL || !tport->tp_is_open) | |
714 | return -ENODEV; | |
715 | ||
716 | spin_lock_irqsave(&tport->tp_lock, flags); | |
717 | count = ti_buf_put(tport->tp_write_buf, data, count); | |
718 | spin_unlock_irqrestore(&tport->tp_lock, flags); | |
719 | ||
720 | ti_send(tport); | |
721 | ||
722 | return count; | |
723 | } | |
724 | ||
725 | ||
95da310e | 726 | static int ti_write_room(struct tty_struct *tty) |
1da177e4 | 727 | { |
95da310e | 728 | struct usb_serial_port *port = tty->driver_data; |
1da177e4 LT |
729 | struct ti_port *tport = usb_get_serial_port_data(port); |
730 | int room = 0; | |
731 | unsigned long flags; | |
732 | ||
441b62c1 | 733 | dbg("%s - port %d", __func__, port->number); |
1da177e4 LT |
734 | |
735 | if (tport == NULL) | |
23198fda | 736 | return 0; |
a30fa793 | 737 | |
1da177e4 LT |
738 | spin_lock_irqsave(&tport->tp_lock, flags); |
739 | room = ti_buf_space_avail(tport->tp_write_buf); | |
740 | spin_unlock_irqrestore(&tport->tp_lock, flags); | |
741 | ||
441b62c1 | 742 | dbg("%s - returns %d", __func__, room); |
1da177e4 LT |
743 | return room; |
744 | } | |
745 | ||
746 | ||
95da310e | 747 | static int ti_chars_in_buffer(struct tty_struct *tty) |
1da177e4 | 748 | { |
95da310e | 749 | struct usb_serial_port *port = tty->driver_data; |
1da177e4 LT |
750 | struct ti_port *tport = usb_get_serial_port_data(port); |
751 | int chars = 0; | |
752 | unsigned long flags; | |
753 | ||
441b62c1 | 754 | dbg("%s - port %d", __func__, port->number); |
1da177e4 LT |
755 | |
756 | if (tport == NULL) | |
23198fda | 757 | return 0; |
1da177e4 LT |
758 | |
759 | spin_lock_irqsave(&tport->tp_lock, flags); | |
760 | chars = ti_buf_data_avail(tport->tp_write_buf); | |
761 | spin_unlock_irqrestore(&tport->tp_lock, flags); | |
762 | ||
441b62c1 | 763 | dbg("%s - returns %d", __func__, chars); |
1da177e4 LT |
764 | return chars; |
765 | } | |
766 | ||
767 | ||
95da310e | 768 | static void ti_throttle(struct tty_struct *tty) |
1da177e4 | 769 | { |
95da310e | 770 | struct usb_serial_port *port = tty->driver_data; |
1da177e4 | 771 | struct ti_port *tport = usb_get_serial_port_data(port); |
1da177e4 | 772 | |
441b62c1 | 773 | dbg("%s - port %d", __func__, port->number); |
1da177e4 LT |
774 | |
775 | if (tport == NULL) | |
776 | return; | |
777 | ||
1da177e4 LT |
778 | if (I_IXOFF(tty) || C_CRTSCTS(tty)) |
779 | ti_stop_read(tport, tty); | |
780 | ||
781 | } | |
782 | ||
783 | ||
95da310e | 784 | static void ti_unthrottle(struct tty_struct *tty) |
1da177e4 | 785 | { |
95da310e | 786 | struct usb_serial_port *port = tty->driver_data; |
1da177e4 | 787 | struct ti_port *tport = usb_get_serial_port_data(port); |
1da177e4 LT |
788 | int status; |
789 | ||
441b62c1 | 790 | dbg("%s - port %d", __func__, port->number); |
1da177e4 LT |
791 | |
792 | if (tport == NULL) | |
793 | return; | |
794 | ||
1da177e4 LT |
795 | if (I_IXOFF(tty) || C_CRTSCTS(tty)) { |
796 | status = ti_restart_read(tport, tty); | |
797 | if (status) | |
a30fa793 AC |
798 | dev_err(&port->dev, "%s - cannot restart read, %d\n", |
799 | __func__, status); | |
1da177e4 LT |
800 | } |
801 | } | |
802 | ||
803 | ||
95da310e | 804 | static int ti_ioctl(struct tty_struct *tty, struct file *file, |
1da177e4 LT |
805 | unsigned int cmd, unsigned long arg) |
806 | { | |
95da310e | 807 | struct usb_serial_port *port = tty->driver_data; |
1da177e4 LT |
808 | struct ti_port *tport = usb_get_serial_port_data(port); |
809 | struct async_icount cnow; | |
810 | struct async_icount cprev; | |
811 | ||
441b62c1 | 812 | dbg("%s - port %d, cmd = 0x%04X", __func__, port->number, cmd); |
1da177e4 LT |
813 | |
814 | if (tport == NULL) | |
815 | return -ENODEV; | |
816 | ||
817 | switch (cmd) { | |
a30fa793 AC |
818 | case TIOCGSERIAL: |
819 | dbg("%s - (%d) TIOCGSERIAL", __func__, port->number); | |
820 | return ti_get_serial_info(tport, | |
821 | (struct serial_struct __user *)arg); | |
822 | case TIOCSSERIAL: | |
823 | dbg("%s - (%d) TIOCSSERIAL", __func__, port->number); | |
4a90f09b AC |
824 | return ti_set_serial_info(tty, tport, |
825 | (struct serial_struct __user *)arg); | |
a30fa793 AC |
826 | case TIOCMIWAIT: |
827 | dbg("%s - (%d) TIOCMIWAIT", __func__, port->number); | |
828 | cprev = tport->tp_icount; | |
829 | while (1) { | |
830 | interruptible_sleep_on(&tport->tp_msr_wait); | |
831 | if (signal_pending(current)) | |
832 | return -ERESTARTSYS; | |
833 | cnow = tport->tp_icount; | |
834 | if (cnow.rng == cprev.rng && cnow.dsr == cprev.dsr && | |
835 | cnow.dcd == cprev.dcd && cnow.cts == cprev.cts) | |
836 | return -EIO; /* no change => error */ | |
837 | if (((arg & TIOCM_RNG) && (cnow.rng != cprev.rng)) || | |
838 | ((arg & TIOCM_DSR) && (cnow.dsr != cprev.dsr)) || | |
839 | ((arg & TIOCM_CD) && (cnow.dcd != cprev.dcd)) || | |
840 | ((arg & TIOCM_CTS) && (cnow.cts != cprev.cts))) | |
841 | return 0; | |
842 | cprev = cnow; | |
843 | } | |
844 | break; | |
845 | case TIOCGICOUNT: | |
846 | dbg("%s - (%d) TIOCGICOUNT RX=%d, TX=%d", | |
847 | __func__, port->number, | |
848 | tport->tp_icount.rx, tport->tp_icount.tx); | |
849 | if (copy_to_user((void __user *)arg, &tport->tp_icount, | |
850 | sizeof(tport->tp_icount))) | |
851 | return -EFAULT; | |
852 | return 0; | |
1da177e4 | 853 | } |
1da177e4 LT |
854 | return -ENOIOCTLCMD; |
855 | } | |
856 | ||
857 | ||
95da310e AC |
858 | static void ti_set_termios(struct tty_struct *tty, |
859 | struct usb_serial_port *port, struct ktermios *old_termios) | |
1da177e4 LT |
860 | { |
861 | struct ti_port *tport = usb_get_serial_port_data(port); | |
1da177e4 | 862 | struct ti_uart_config *config; |
a30fa793 | 863 | tcflag_t cflag, iflag; |
1da177e4 LT |
864 | int baud; |
865 | int status; | |
866 | int port_number = port->number - port->serial->minor; | |
867 | unsigned int mcr; | |
868 | ||
441b62c1 | 869 | dbg("%s - port %d", __func__, port->number); |
1da177e4 | 870 | |
1da177e4 LT |
871 | cflag = tty->termios->c_cflag; |
872 | iflag = tty->termios->c_iflag; | |
873 | ||
441b62c1 | 874 | dbg("%s - cflag %08x, iflag %08x", __func__, cflag, iflag); |
a30fa793 AC |
875 | dbg("%s - old clfag %08x, old iflag %08x", __func__, |
876 | old_termios->c_cflag, old_termios->c_iflag); | |
1da177e4 LT |
877 | |
878 | if (tport == NULL) | |
879 | return; | |
880 | ||
881 | config = kmalloc(sizeof(*config), GFP_KERNEL); | |
882 | if (!config) { | |
441b62c1 | 883 | dev_err(&port->dev, "%s - out of memory\n", __func__); |
1da177e4 LT |
884 | return; |
885 | } | |
886 | ||
887 | config->wFlags = 0; | |
888 | ||
889 | /* these flags must be set */ | |
890 | config->wFlags |= TI_UART_ENABLE_MS_INTS; | |
891 | config->wFlags |= TI_UART_ENABLE_AUTO_START_DMA; | |
892 | config->bUartMode = (__u8)(tport->tp_uart_mode); | |
893 | ||
894 | switch (cflag & CSIZE) { | |
a30fa793 AC |
895 | case CS5: |
896 | config->bDataBits = TI_UART_5_DATA_BITS; | |
897 | break; | |
898 | case CS6: | |
899 | config->bDataBits = TI_UART_6_DATA_BITS; | |
900 | break; | |
901 | case CS7: | |
902 | config->bDataBits = TI_UART_7_DATA_BITS; | |
903 | break; | |
904 | default: | |
905 | case CS8: | |
906 | config->bDataBits = TI_UART_8_DATA_BITS; | |
907 | break; | |
1da177e4 LT |
908 | } |
909 | ||
537699ef AC |
910 | /* CMSPAR isn't supported by this driver */ |
911 | tty->termios->c_cflag &= ~CMSPAR; | |
912 | ||
1da177e4 LT |
913 | if (cflag & PARENB) { |
914 | if (cflag & PARODD) { | |
915 | config->wFlags |= TI_UART_ENABLE_PARITY_CHECKING; | |
916 | config->bParity = TI_UART_ODD_PARITY; | |
917 | } else { | |
918 | config->wFlags |= TI_UART_ENABLE_PARITY_CHECKING; | |
919 | config->bParity = TI_UART_EVEN_PARITY; | |
920 | } | |
921 | } else { | |
922 | config->wFlags &= ~TI_UART_ENABLE_PARITY_CHECKING; | |
a30fa793 | 923 | config->bParity = TI_UART_NO_PARITY; |
1da177e4 LT |
924 | } |
925 | ||
926 | if (cflag & CSTOPB) | |
927 | config->bStopBits = TI_UART_2_STOP_BITS; | |
928 | else | |
929 | config->bStopBits = TI_UART_1_STOP_BITS; | |
930 | ||
931 | if (cflag & CRTSCTS) { | |
932 | /* RTS flow control must be off to drop RTS for baud rate B0 */ | |
933 | if ((cflag & CBAUD) != B0) | |
934 | config->wFlags |= TI_UART_ENABLE_RTS_IN; | |
935 | config->wFlags |= TI_UART_ENABLE_CTS_OUT; | |
936 | } else { | |
937 | tty->hw_stopped = 0; | |
938 | ti_restart_read(tport, tty); | |
939 | } | |
940 | ||
941 | if (I_IXOFF(tty) || I_IXON(tty)) { | |
942 | config->cXon = START_CHAR(tty); | |
943 | config->cXoff = STOP_CHAR(tty); | |
944 | ||
945 | if (I_IXOFF(tty)) | |
946 | config->wFlags |= TI_UART_ENABLE_X_IN; | |
947 | else | |
948 | ti_restart_read(tport, tty); | |
949 | ||
950 | if (I_IXON(tty)) | |
951 | config->wFlags |= TI_UART_ENABLE_X_OUT; | |
952 | } | |
953 | ||
954 | baud = tty_get_baud_rate(tty); | |
537699ef AC |
955 | if (!baud) |
956 | baud = 9600; | |
1da177e4 LT |
957 | if (tport->tp_tdev->td_is_3410) |
958 | config->wBaudRate = (__u16)((923077 + baud/2) / baud); | |
959 | else | |
960 | config->wBaudRate = (__u16)((461538 + baud/2) / baud); | |
961 | ||
537699ef AC |
962 | /* FIXME: Should calculate resulting baud here and report it back */ |
963 | if ((cflag & CBAUD) != B0) | |
964 | tty_encode_baud_rate(tty, baud, baud); | |
965 | ||
1da177e4 | 966 | dbg("%s - BaudRate=%d, wBaudRate=%d, wFlags=0x%04X, bDataBits=%d, bParity=%d, bStopBits=%d, cXon=%d, cXoff=%d, bUartMode=%d", |
441b62c1 | 967 | __func__, baud, config->wBaudRate, config->wFlags, config->bDataBits, config->bParity, config->bStopBits, config->cXon, config->cXoff, config->bUartMode); |
1da177e4 LT |
968 | |
969 | cpu_to_be16s(&config->wBaudRate); | |
970 | cpu_to_be16s(&config->wFlags); | |
971 | ||
972 | status = ti_command_out_sync(tport->tp_tdev, TI_SET_CONFIG, | |
973 | (__u8)(TI_UART1_PORT + port_number), 0, (__u8 *)config, | |
974 | sizeof(*config)); | |
975 | if (status) | |
a30fa793 AC |
976 | dev_err(&port->dev, "%s - cannot set config on port %d, %d\n", |
977 | __func__, port_number, status); | |
1da177e4 LT |
978 | |
979 | /* SET_CONFIG asserts RTS and DTR, reset them correctly */ | |
980 | mcr = tport->tp_shadow_mcr; | |
981 | /* if baud rate is B0, clear RTS and DTR */ | |
982 | if ((cflag & CBAUD) == B0) | |
983 | mcr &= ~(TI_MCR_DTR | TI_MCR_RTS); | |
984 | status = ti_set_mcr(tport, mcr); | |
985 | if (status) | |
a30fa793 AC |
986 | dev_err(&port->dev, |
987 | "%s - cannot set modem control on port %d, %d\n", | |
988 | __func__, port_number, status); | |
1da177e4 LT |
989 | |
990 | kfree(config); | |
991 | } | |
992 | ||
993 | ||
95da310e | 994 | static int ti_tiocmget(struct tty_struct *tty, struct file *file) |
1da177e4 | 995 | { |
95da310e | 996 | struct usb_serial_port *port = tty->driver_data; |
1da177e4 LT |
997 | struct ti_port *tport = usb_get_serial_port_data(port); |
998 | unsigned int result; | |
999 | unsigned int msr; | |
1000 | unsigned int mcr; | |
04ca89d4 | 1001 | unsigned long flags; |
1da177e4 | 1002 | |
441b62c1 | 1003 | dbg("%s - port %d", __func__, port->number); |
1da177e4 LT |
1004 | |
1005 | if (tport == NULL) | |
1006 | return -ENODEV; | |
1007 | ||
04ca89d4 | 1008 | spin_lock_irqsave(&tport->tp_lock, flags); |
1da177e4 LT |
1009 | msr = tport->tp_msr; |
1010 | mcr = tport->tp_shadow_mcr; | |
04ca89d4 | 1011 | spin_unlock_irqrestore(&tport->tp_lock, flags); |
1da177e4 LT |
1012 | |
1013 | result = ((mcr & TI_MCR_DTR) ? TIOCM_DTR : 0) | |
1014 | | ((mcr & TI_MCR_RTS) ? TIOCM_RTS : 0) | |
1015 | | ((mcr & TI_MCR_LOOP) ? TIOCM_LOOP : 0) | |
1016 | | ((msr & TI_MSR_CTS) ? TIOCM_CTS : 0) | |
1017 | | ((msr & TI_MSR_CD) ? TIOCM_CAR : 0) | |
1018 | | ((msr & TI_MSR_RI) ? TIOCM_RI : 0) | |
1019 | | ((msr & TI_MSR_DSR) ? TIOCM_DSR : 0); | |
1020 | ||
441b62c1 | 1021 | dbg("%s - 0x%04X", __func__, result); |
1da177e4 LT |
1022 | |
1023 | return result; | |
1024 | } | |
1025 | ||
1026 | ||
95da310e | 1027 | static int ti_tiocmset(struct tty_struct *tty, struct file *file, |
1da177e4 LT |
1028 | unsigned int set, unsigned int clear) |
1029 | { | |
95da310e | 1030 | struct usb_serial_port *port = tty->driver_data; |
1da177e4 LT |
1031 | struct ti_port *tport = usb_get_serial_port_data(port); |
1032 | unsigned int mcr; | |
04ca89d4 | 1033 | unsigned long flags; |
1da177e4 | 1034 | |
441b62c1 | 1035 | dbg("%s - port %d", __func__, port->number); |
1da177e4 LT |
1036 | |
1037 | if (tport == NULL) | |
1038 | return -ENODEV; | |
1039 | ||
04ca89d4 | 1040 | spin_lock_irqsave(&tport->tp_lock, flags); |
1da177e4 LT |
1041 | mcr = tport->tp_shadow_mcr; |
1042 | ||
1043 | if (set & TIOCM_RTS) | |
1044 | mcr |= TI_MCR_RTS; | |
1045 | if (set & TIOCM_DTR) | |
1046 | mcr |= TI_MCR_DTR; | |
1047 | if (set & TIOCM_LOOP) | |
1048 | mcr |= TI_MCR_LOOP; | |
1049 | ||
1050 | if (clear & TIOCM_RTS) | |
1051 | mcr &= ~TI_MCR_RTS; | |
1052 | if (clear & TIOCM_DTR) | |
1053 | mcr &= ~TI_MCR_DTR; | |
1054 | if (clear & TIOCM_LOOP) | |
1055 | mcr &= ~TI_MCR_LOOP; | |
04ca89d4 | 1056 | spin_unlock_irqrestore(&tport->tp_lock, flags); |
1da177e4 LT |
1057 | |
1058 | return ti_set_mcr(tport, mcr); | |
1059 | } | |
1060 | ||
1061 | ||
95da310e | 1062 | static void ti_break(struct tty_struct *tty, int break_state) |
1da177e4 | 1063 | { |
95da310e | 1064 | struct usb_serial_port *port = tty->driver_data; |
1da177e4 LT |
1065 | struct ti_port *tport = usb_get_serial_port_data(port); |
1066 | int status; | |
1067 | ||
441b62c1 | 1068 | dbg("%s - state = %d", __func__, break_state); |
1da177e4 LT |
1069 | |
1070 | if (tport == NULL) | |
1071 | return; | |
1072 | ||
1073 | ti_drain(tport, (tport->tp_closing_wait*HZ)/100, 0); | |
1074 | ||
1075 | status = ti_write_byte(tport->tp_tdev, | |
1076 | tport->tp_uart_base_addr + TI_UART_OFFSET_LCR, | |
1077 | TI_LCR_BREAK, break_state == -1 ? TI_LCR_BREAK : 0); | |
1078 | ||
1079 | if (status) | |
441b62c1 | 1080 | dbg("%s - error setting break, %d", __func__, status); |
1da177e4 LT |
1081 | } |
1082 | ||
1083 | ||
7d12e780 | 1084 | static void ti_interrupt_callback(struct urb *urb) |
1da177e4 | 1085 | { |
cdc97792 | 1086 | struct ti_device *tdev = urb->context; |
1da177e4 LT |
1087 | struct usb_serial_port *port; |
1088 | struct usb_serial *serial = tdev->td_serial; | |
1089 | struct ti_port *tport; | |
1090 | struct device *dev = &urb->dev->dev; | |
1091 | unsigned char *data = urb->transfer_buffer; | |
1092 | int length = urb->actual_length; | |
1093 | int port_number; | |
1094 | int function; | |
52171b48 GKH |
1095 | int status = urb->status; |
1096 | int retval; | |
1da177e4 LT |
1097 | __u8 msr; |
1098 | ||
441b62c1 | 1099 | dbg("%s", __func__); |
1da177e4 | 1100 | |
52171b48 | 1101 | switch (status) { |
1da177e4 LT |
1102 | case 0: |
1103 | break; | |
1104 | case -ECONNRESET: | |
1105 | case -ENOENT: | |
1106 | case -ESHUTDOWN: | |
441b62c1 | 1107 | dbg("%s - urb shutting down, %d", __func__, status); |
1da177e4 LT |
1108 | tdev->td_urb_error = 1; |
1109 | return; | |
1110 | default: | |
52171b48 | 1111 | dev_err(dev, "%s - nonzero urb status, %d\n", |
441b62c1 | 1112 | __func__, status); |
1da177e4 LT |
1113 | tdev->td_urb_error = 1; |
1114 | goto exit; | |
1115 | } | |
1116 | ||
1117 | if (length != 2) { | |
441b62c1 | 1118 | dbg("%s - bad packet size, %d", __func__, length); |
1da177e4 LT |
1119 | goto exit; |
1120 | } | |
1121 | ||
1122 | if (data[0] == TI_CODE_HARDWARE_ERROR) { | |
441b62c1 | 1123 | dev_err(dev, "%s - hardware error, %d\n", __func__, data[1]); |
1da177e4 LT |
1124 | goto exit; |
1125 | } | |
1126 | ||
1127 | port_number = TI_GET_PORT_FROM_CODE(data[0]); | |
1128 | function = TI_GET_FUNC_FROM_CODE(data[0]); | |
1129 | ||
a30fa793 AC |
1130 | dbg("%s - port_number %d, function %d, data 0x%02X", |
1131 | __func__, port_number, function, data[1]); | |
1da177e4 LT |
1132 | |
1133 | if (port_number >= serial->num_ports) { | |
a30fa793 AC |
1134 | dev_err(dev, "%s - bad port number, %d\n", |
1135 | __func__, port_number); | |
1da177e4 LT |
1136 | goto exit; |
1137 | } | |
1138 | ||
1139 | port = serial->port[port_number]; | |
1140 | ||
1141 | tport = usb_get_serial_port_data(port); | |
1142 | if (!tport) | |
1143 | goto exit; | |
1144 | ||
1145 | switch (function) { | |
1146 | case TI_CODE_DATA_ERROR: | |
a30fa793 AC |
1147 | dev_err(dev, "%s - DATA ERROR, port %d, data 0x%02X\n", |
1148 | __func__, port_number, data[1]); | |
1da177e4 LT |
1149 | break; |
1150 | ||
1151 | case TI_CODE_MODEM_STATUS: | |
1152 | msr = data[1]; | |
441b62c1 | 1153 | dbg("%s - port %d, msr 0x%02X", __func__, port_number, msr); |
1da177e4 LT |
1154 | ti_handle_new_msr(tport, msr); |
1155 | break; | |
1156 | ||
1157 | default: | |
a30fa793 AC |
1158 | dev_err(dev, "%s - unknown interrupt code, 0x%02X\n", |
1159 | __func__, data[1]); | |
1da177e4 LT |
1160 | break; |
1161 | } | |
1162 | ||
1163 | exit: | |
52171b48 GKH |
1164 | retval = usb_submit_urb(urb, GFP_ATOMIC); |
1165 | if (retval) | |
1166 | dev_err(dev, "%s - resubmit interrupt urb failed, %d\n", | |
441b62c1 | 1167 | __func__, retval); |
1da177e4 LT |
1168 | } |
1169 | ||
1170 | ||
7d12e780 | 1171 | static void ti_bulk_in_callback(struct urb *urb) |
1da177e4 | 1172 | { |
cdc97792 | 1173 | struct ti_port *tport = urb->context; |
1da177e4 LT |
1174 | struct usb_serial_port *port = tport->tp_port; |
1175 | struct device *dev = &urb->dev->dev; | |
52171b48 GKH |
1176 | int status = urb->status; |
1177 | int retval = 0; | |
4a90f09b | 1178 | struct tty_struct *tty; |
1da177e4 | 1179 | |
441b62c1 | 1180 | dbg("%s", __func__); |
1da177e4 | 1181 | |
52171b48 | 1182 | switch (status) { |
1da177e4 LT |
1183 | case 0: |
1184 | break; | |
1185 | case -ECONNRESET: | |
1186 | case -ENOENT: | |
1187 | case -ESHUTDOWN: | |
441b62c1 | 1188 | dbg("%s - urb shutting down, %d", __func__, status); |
1da177e4 LT |
1189 | tport->tp_tdev->td_urb_error = 1; |
1190 | wake_up_interruptible(&tport->tp_write_wait); | |
1191 | return; | |
1192 | default: | |
52171b48 | 1193 | dev_err(dev, "%s - nonzero urb status, %d\n", |
a30fa793 | 1194 | __func__, status); |
1da177e4 LT |
1195 | tport->tp_tdev->td_urb_error = 1; |
1196 | wake_up_interruptible(&tport->tp_write_wait); | |
1197 | } | |
1198 | ||
52171b48 | 1199 | if (status == -EPIPE) |
1da177e4 LT |
1200 | goto exit; |
1201 | ||
52171b48 | 1202 | if (status) { |
441b62c1 | 1203 | dev_err(dev, "%s - stopping read!\n", __func__); |
1da177e4 LT |
1204 | return; |
1205 | } | |
1206 | ||
4a90f09b | 1207 | tty = tty_port_tty_get(&port->port); |
cf545093 AC |
1208 | if (tty) { |
1209 | if (urb->actual_length) { | |
1210 | usb_serial_debug_data(debug, dev, __func__, | |
1211 | urb->actual_length, urb->transfer_buffer); | |
1212 | ||
1213 | if (!tport->tp_is_open) | |
1214 | dbg("%s - port closed, dropping data", | |
1215 | __func__); | |
1216 | else | |
1217 | ti_recv(&urb->dev->dev, tty, | |
a30fa793 AC |
1218 | urb->transfer_buffer, |
1219 | urb->actual_length); | |
cf545093 AC |
1220 | spin_lock(&tport->tp_lock); |
1221 | tport->tp_icount.rx += urb->actual_length; | |
1222 | spin_unlock(&tport->tp_lock); | |
1223 | } | |
4a90f09b | 1224 | tty_kref_put(tty); |
1da177e4 LT |
1225 | } |
1226 | ||
1227 | exit: | |
1228 | /* continue to read unless stopping */ | |
1229 | spin_lock(&tport->tp_lock); | |
1230 | if (tport->tp_read_urb_state == TI_READ_URB_RUNNING) { | |
1231 | urb->dev = port->serial->dev; | |
52171b48 | 1232 | retval = usb_submit_urb(urb, GFP_ATOMIC); |
1da177e4 LT |
1233 | } else if (tport->tp_read_urb_state == TI_READ_URB_STOPPING) { |
1234 | tport->tp_read_urb_state = TI_READ_URB_STOPPED; | |
1235 | } | |
1236 | spin_unlock(&tport->tp_lock); | |
52171b48 GKH |
1237 | if (retval) |
1238 | dev_err(dev, "%s - resubmit read urb failed, %d\n", | |
441b62c1 | 1239 | __func__, retval); |
1da177e4 LT |
1240 | } |
1241 | ||
1242 | ||
7d12e780 | 1243 | static void ti_bulk_out_callback(struct urb *urb) |
1da177e4 | 1244 | { |
cdc97792 | 1245 | struct ti_port *tport = urb->context; |
1da177e4 LT |
1246 | struct usb_serial_port *port = tport->tp_port; |
1247 | struct device *dev = &urb->dev->dev; | |
52171b48 | 1248 | int status = urb->status; |
1da177e4 | 1249 | |
441b62c1 | 1250 | dbg("%s - port %d", __func__, port->number); |
1da177e4 LT |
1251 | |
1252 | tport->tp_write_urb_in_use = 0; | |
1253 | ||
52171b48 | 1254 | switch (status) { |
1da177e4 LT |
1255 | case 0: |
1256 | break; | |
1257 | case -ECONNRESET: | |
1258 | case -ENOENT: | |
1259 | case -ESHUTDOWN: | |
441b62c1 | 1260 | dbg("%s - urb shutting down, %d", __func__, status); |
1da177e4 LT |
1261 | tport->tp_tdev->td_urb_error = 1; |
1262 | wake_up_interruptible(&tport->tp_write_wait); | |
1263 | return; | |
1264 | default: | |
52171b48 | 1265 | dev_err(dev, "%s - nonzero urb status, %d\n", |
441b62c1 | 1266 | __func__, status); |
1da177e4 LT |
1267 | tport->tp_tdev->td_urb_error = 1; |
1268 | wake_up_interruptible(&tport->tp_write_wait); | |
1269 | } | |
1270 | ||
1271 | /* send any buffered data */ | |
1272 | ti_send(tport); | |
1273 | } | |
1274 | ||
1275 | ||
1276 | static void ti_recv(struct device *dev, struct tty_struct *tty, | |
1277 | unsigned char *data, int length) | |
1278 | { | |
1279 | int cnt; | |
1280 | ||
1281 | do { | |
a108bfcb | 1282 | cnt = tty_insert_flip_string(tty, data, length); |
33f0f88f | 1283 | if (cnt < length) { |
a30fa793 AC |
1284 | dev_err(dev, "%s - dropping data, %d bytes lost\n", |
1285 | __func__, length - cnt); | |
1286 | if (cnt == 0) | |
33f0f88f | 1287 | break; |
1da177e4 | 1288 | } |
33f0f88f | 1289 | tty_flip_buffer_push(tty); |
1da177e4 LT |
1290 | data += cnt; |
1291 | length -= cnt; | |
1292 | } while (length > 0); | |
1293 | ||
1da177e4 LT |
1294 | } |
1295 | ||
1296 | ||
1297 | static void ti_send(struct ti_port *tport) | |
1298 | { | |
1299 | int count, result; | |
1300 | struct usb_serial_port *port = tport->tp_port; | |
4a90f09b | 1301 | struct tty_struct *tty = tty_port_tty_get(&port->port); /* FIXME */ |
1da177e4 LT |
1302 | unsigned long flags; |
1303 | ||
1304 | ||
441b62c1 | 1305 | dbg("%s - port %d", __func__, port->number); |
1da177e4 LT |
1306 | |
1307 | spin_lock_irqsave(&tport->tp_lock, flags); | |
1308 | ||
4a90f09b AC |
1309 | if (tport->tp_write_urb_in_use) |
1310 | goto unlock; | |
1da177e4 LT |
1311 | |
1312 | count = ti_buf_get(tport->tp_write_buf, | |
1313 | port->write_urb->transfer_buffer, | |
1314 | port->bulk_out_size); | |
1315 | ||
4a90f09b AC |
1316 | if (count == 0) |
1317 | goto unlock; | |
1da177e4 LT |
1318 | |
1319 | tport->tp_write_urb_in_use = 1; | |
1320 | ||
1321 | spin_unlock_irqrestore(&tport->tp_lock, flags); | |
1322 | ||
a30fa793 AC |
1323 | usb_serial_debug_data(debug, &port->dev, __func__, count, |
1324 | port->write_urb->transfer_buffer); | |
1da177e4 LT |
1325 | |
1326 | usb_fill_bulk_urb(port->write_urb, port->serial->dev, | |
1327 | usb_sndbulkpipe(port->serial->dev, | |
1328 | port->bulk_out_endpointAddress), | |
1329 | port->write_urb->transfer_buffer, count, | |
1330 | ti_bulk_out_callback, tport); | |
1331 | ||
1332 | result = usb_submit_urb(port->write_urb, GFP_ATOMIC); | |
1333 | if (result) { | |
a30fa793 AC |
1334 | dev_err(&port->dev, "%s - submit write urb failed, %d\n", |
1335 | __func__, result); | |
1336 | tport->tp_write_urb_in_use = 0; | |
1da177e4 LT |
1337 | /* TODO: reschedule ti_send */ |
1338 | } else { | |
1339 | spin_lock_irqsave(&tport->tp_lock, flags); | |
1340 | tport->tp_icount.tx += count; | |
1341 | spin_unlock_irqrestore(&tport->tp_lock, flags); | |
1342 | } | |
1343 | ||
1344 | /* more room in the buffer for new writes, wakeup */ | |
1345 | if (tty) | |
1346 | tty_wakeup(tty); | |
4a90f09b | 1347 | tty_kref_put(tty); |
1da177e4 | 1348 | wake_up_interruptible(&tport->tp_write_wait); |
4a90f09b AC |
1349 | return; |
1350 | unlock: | |
1351 | spin_unlock_irqrestore(&tport->tp_lock, flags); | |
1352 | tty_kref_put(tty); | |
1353 | return; | |
1da177e4 LT |
1354 | } |
1355 | ||
1356 | ||
1357 | static int ti_set_mcr(struct ti_port *tport, unsigned int mcr) | |
1358 | { | |
04ca89d4 | 1359 | unsigned long flags; |
1da177e4 LT |
1360 | int status; |
1361 | ||
1362 | status = ti_write_byte(tport->tp_tdev, | |
1363 | tport->tp_uart_base_addr + TI_UART_OFFSET_MCR, | |
1364 | TI_MCR_RTS | TI_MCR_DTR | TI_MCR_LOOP, mcr); | |
1365 | ||
04ca89d4 | 1366 | spin_lock_irqsave(&tport->tp_lock, flags); |
1da177e4 LT |
1367 | if (!status) |
1368 | tport->tp_shadow_mcr = mcr; | |
04ca89d4 | 1369 | spin_unlock_irqrestore(&tport->tp_lock, flags); |
1da177e4 LT |
1370 | |
1371 | return status; | |
1372 | } | |
1373 | ||
1374 | ||
1375 | static int ti_get_lsr(struct ti_port *tport) | |
1376 | { | |
a30fa793 | 1377 | int size, status; |
1da177e4 LT |
1378 | struct ti_device *tdev = tport->tp_tdev; |
1379 | struct usb_serial_port *port = tport->tp_port; | |
1380 | int port_number = port->number - port->serial->minor; | |
1381 | struct ti_port_status *data; | |
1382 | ||
441b62c1 | 1383 | dbg("%s - port %d", __func__, port->number); |
1da177e4 LT |
1384 | |
1385 | size = sizeof(struct ti_port_status); | |
1386 | data = kmalloc(size, GFP_KERNEL); | |
1387 | if (!data) { | |
441b62c1 | 1388 | dev_err(&port->dev, "%s - out of memory\n", __func__); |
1da177e4 LT |
1389 | return -ENOMEM; |
1390 | } | |
1391 | ||
1392 | status = ti_command_in_sync(tdev, TI_GET_PORT_STATUS, | |
1393 | (__u8)(TI_UART1_PORT+port_number), 0, (__u8 *)data, size); | |
1394 | if (status) { | |
a30fa793 AC |
1395 | dev_err(&port->dev, |
1396 | "%s - get port status command failed, %d\n", | |
1397 | __func__, status); | |
1da177e4 LT |
1398 | goto free_data; |
1399 | } | |
1400 | ||
441b62c1 | 1401 | dbg("%s - lsr 0x%02X", __func__, data->bLSR); |
1da177e4 LT |
1402 | |
1403 | tport->tp_lsr = data->bLSR; | |
1404 | ||
1405 | free_data: | |
1406 | kfree(data); | |
1407 | return status; | |
1408 | } | |
1409 | ||
1410 | ||
1411 | static int ti_get_serial_info(struct ti_port *tport, | |
1412 | struct serial_struct __user *ret_arg) | |
1413 | { | |
1414 | struct usb_serial_port *port = tport->tp_port; | |
1415 | struct serial_struct ret_serial; | |
1416 | ||
1417 | if (!ret_arg) | |
1418 | return -EFAULT; | |
1419 | ||
1420 | memset(&ret_serial, 0, sizeof(ret_serial)); | |
1421 | ||
1422 | ret_serial.type = PORT_16550A; | |
1423 | ret_serial.line = port->serial->minor; | |
1424 | ret_serial.port = port->number - port->serial->minor; | |
1425 | ret_serial.flags = tport->tp_flags; | |
1426 | ret_serial.xmit_fifo_size = TI_WRITE_BUF_SIZE; | |
1427 | ret_serial.baud_base = tport->tp_tdev->td_is_3410 ? 921600 : 460800; | |
1428 | ret_serial.closing_wait = tport->tp_closing_wait; | |
1429 | ||
1430 | if (copy_to_user(ret_arg, &ret_serial, sizeof(*ret_arg))) | |
1431 | return -EFAULT; | |
1432 | ||
1433 | return 0; | |
1434 | } | |
1435 | ||
1436 | ||
4a90f09b | 1437 | static int ti_set_serial_info(struct tty_struct *tty, struct ti_port *tport, |
1da177e4 LT |
1438 | struct serial_struct __user *new_arg) |
1439 | { | |
1da177e4 LT |
1440 | struct serial_struct new_serial; |
1441 | ||
1442 | if (copy_from_user(&new_serial, new_arg, sizeof(new_serial))) | |
1443 | return -EFAULT; | |
1444 | ||
1445 | tport->tp_flags = new_serial.flags & TI_SET_SERIAL_FLAGS; | |
1da177e4 LT |
1446 | tport->tp_closing_wait = new_serial.closing_wait; |
1447 | ||
1448 | return 0; | |
1449 | } | |
1450 | ||
1451 | ||
1452 | static void ti_handle_new_msr(struct ti_port *tport, __u8 msr) | |
1453 | { | |
1454 | struct async_icount *icount; | |
1455 | struct tty_struct *tty; | |
1456 | unsigned long flags; | |
1457 | ||
441b62c1 | 1458 | dbg("%s - msr 0x%02X", __func__, msr); |
1da177e4 LT |
1459 | |
1460 | if (msr & TI_MSR_DELTA_MASK) { | |
1461 | spin_lock_irqsave(&tport->tp_lock, flags); | |
1462 | icount = &tport->tp_icount; | |
1463 | if (msr & TI_MSR_DELTA_CTS) | |
1464 | icount->cts++; | |
1465 | if (msr & TI_MSR_DELTA_DSR) | |
1466 | icount->dsr++; | |
1467 | if (msr & TI_MSR_DELTA_CD) | |
1468 | icount->dcd++; | |
1469 | if (msr & TI_MSR_DELTA_RI) | |
1470 | icount->rng++; | |
1471 | wake_up_interruptible(&tport->tp_msr_wait); | |
1472 | spin_unlock_irqrestore(&tport->tp_lock, flags); | |
1473 | } | |
1474 | ||
1475 | tport->tp_msr = msr & TI_MSR_MASK; | |
1476 | ||
1477 | /* handle CTS flow control */ | |
4a90f09b | 1478 | tty = tty_port_tty_get(&tport->tp_port->port); |
1da177e4 LT |
1479 | if (tty && C_CRTSCTS(tty)) { |
1480 | if (msr & TI_MSR_CTS) { | |
1481 | tty->hw_stopped = 0; | |
1482 | tty_wakeup(tty); | |
1483 | } else { | |
1484 | tty->hw_stopped = 1; | |
1485 | } | |
1486 | } | |
4a90f09b | 1487 | tty_kref_put(tty); |
1da177e4 LT |
1488 | } |
1489 | ||
1490 | ||
1491 | static void ti_drain(struct ti_port *tport, unsigned long timeout, int flush) | |
1492 | { | |
1493 | struct ti_device *tdev = tport->tp_tdev; | |
1494 | struct usb_serial_port *port = tport->tp_port; | |
1495 | wait_queue_t wait; | |
1da177e4 | 1496 | |
441b62c1 | 1497 | dbg("%s - port %d", __func__, port->number); |
1da177e4 | 1498 | |
0915f490 | 1499 | spin_lock_irq(&tport->tp_lock); |
1da177e4 LT |
1500 | |
1501 | /* wait for data to drain from the buffer */ | |
1502 | tdev->td_urb_error = 0; | |
1503 | init_waitqueue_entry(&wait, current); | |
1504 | add_wait_queue(&tport->tp_write_wait, &wait); | |
1505 | for (;;) { | |
1506 | set_current_state(TASK_INTERRUPTIBLE); | |
1507 | if (ti_buf_data_avail(tport->tp_write_buf) == 0 | |
1508 | || timeout == 0 || signal_pending(current) | |
1509 | || tdev->td_urb_error | |
0915f490 | 1510 | || port->serial->disconnected) /* disconnect */ |
1da177e4 | 1511 | break; |
0915f490 | 1512 | spin_unlock_irq(&tport->tp_lock); |
1da177e4 | 1513 | timeout = schedule_timeout(timeout); |
0915f490 | 1514 | spin_lock_irq(&tport->tp_lock); |
1da177e4 LT |
1515 | } |
1516 | set_current_state(TASK_RUNNING); | |
1517 | remove_wait_queue(&tport->tp_write_wait, &wait); | |
1518 | ||
1519 | /* flush any remaining data in the buffer */ | |
1520 | if (flush) | |
1521 | ti_buf_clear(tport->tp_write_buf); | |
1522 | ||
0915f490 | 1523 | spin_unlock_irq(&tport->tp_lock); |
1da177e4 | 1524 | |
0915f490 | 1525 | mutex_lock(&port->serial->disc_mutex); |
1da177e4 LT |
1526 | /* wait for data to drain from the device */ |
1527 | /* wait for empty tx register, plus 20 ms */ | |
1528 | timeout += jiffies; | |
1529 | tport->tp_lsr &= ~TI_LSR_TX_EMPTY; | |
1530 | while ((long)(jiffies - timeout) < 0 && !signal_pending(current) | |
1531 | && !(tport->tp_lsr&TI_LSR_TX_EMPTY) && !tdev->td_urb_error | |
0915f490 | 1532 | && !port->serial->disconnected) { |
1da177e4 LT |
1533 | if (ti_get_lsr(tport)) |
1534 | break; | |
0915f490 | 1535 | mutex_unlock(&port->serial->disc_mutex); |
1da177e4 | 1536 | msleep_interruptible(20); |
0915f490 | 1537 | mutex_lock(&port->serial->disc_mutex); |
1da177e4 | 1538 | } |
0915f490 | 1539 | mutex_unlock(&port->serial->disc_mutex); |
1da177e4 LT |
1540 | } |
1541 | ||
1542 | ||
1543 | static void ti_stop_read(struct ti_port *tport, struct tty_struct *tty) | |
1544 | { | |
1545 | unsigned long flags; | |
1546 | ||
1547 | spin_lock_irqsave(&tport->tp_lock, flags); | |
1548 | ||
1549 | if (tport->tp_read_urb_state == TI_READ_URB_RUNNING) | |
1550 | tport->tp_read_urb_state = TI_READ_URB_STOPPING; | |
1551 | ||
1552 | spin_unlock_irqrestore(&tport->tp_lock, flags); | |
1553 | } | |
1554 | ||
1555 | ||
1556 | static int ti_restart_read(struct ti_port *tport, struct tty_struct *tty) | |
1557 | { | |
1558 | struct urb *urb; | |
1559 | int status = 0; | |
1560 | unsigned long flags; | |
1561 | ||
1562 | spin_lock_irqsave(&tport->tp_lock, flags); | |
1563 | ||
1564 | if (tport->tp_read_urb_state == TI_READ_URB_STOPPED) { | |
944dc184 | 1565 | tport->tp_read_urb_state = TI_READ_URB_RUNNING; |
1da177e4 | 1566 | urb = tport->tp_port->read_urb; |
944dc184 | 1567 | spin_unlock_irqrestore(&tport->tp_lock, flags); |
1da177e4 LT |
1568 | urb->complete = ti_bulk_in_callback; |
1569 | urb->context = tport; | |
1570 | urb->dev = tport->tp_port->serial->dev; | |
1571 | status = usb_submit_urb(urb, GFP_KERNEL); | |
944dc184 ON |
1572 | } else { |
1573 | tport->tp_read_urb_state = TI_READ_URB_RUNNING; | |
1574 | spin_unlock_irqrestore(&tport->tp_lock, flags); | |
1da177e4 | 1575 | } |
1da177e4 LT |
1576 | |
1577 | return status; | |
1578 | } | |
1579 | ||
1580 | ||
1581 | static int ti_command_out_sync(struct ti_device *tdev, __u8 command, | |
1582 | __u16 moduleid, __u16 value, __u8 *data, int size) | |
1583 | { | |
1584 | int status; | |
1585 | ||
1586 | status = usb_control_msg(tdev->td_serial->dev, | |
1587 | usb_sndctrlpipe(tdev->td_serial->dev, 0), command, | |
1588 | (USB_TYPE_VENDOR | USB_RECIP_DEVICE | USB_DIR_OUT), | |
1589 | value, moduleid, data, size, 1000); | |
1590 | ||
1591 | if (status == size) | |
1592 | status = 0; | |
1593 | ||
1594 | if (status > 0) | |
1595 | status = -ECOMM; | |
1596 | ||
1597 | return status; | |
1598 | } | |
1599 | ||
1600 | ||
1601 | static int ti_command_in_sync(struct ti_device *tdev, __u8 command, | |
1602 | __u16 moduleid, __u16 value, __u8 *data, int size) | |
1603 | { | |
1604 | int status; | |
1605 | ||
1606 | status = usb_control_msg(tdev->td_serial->dev, | |
1607 | usb_rcvctrlpipe(tdev->td_serial->dev, 0), command, | |
1608 | (USB_TYPE_VENDOR | USB_RECIP_DEVICE | USB_DIR_IN), | |
1609 | value, moduleid, data, size, 1000); | |
1610 | ||
1611 | if (status == size) | |
1612 | status = 0; | |
1613 | ||
1614 | if (status > 0) | |
1615 | status = -ECOMM; | |
1616 | ||
1617 | return status; | |
1618 | } | |
1619 | ||
1620 | ||
1621 | static int ti_write_byte(struct ti_device *tdev, unsigned long addr, | |
1622 | __u8 mask, __u8 byte) | |
1623 | { | |
1624 | int status; | |
1625 | unsigned int size; | |
1626 | struct ti_write_data_bytes *data; | |
1627 | struct device *dev = &tdev->td_serial->dev->dev; | |
1628 | ||
a30fa793 AC |
1629 | dbg("%s - addr 0x%08lX, mask 0x%02X, byte 0x%02X", |
1630 | __func__, addr, mask, byte); | |
1da177e4 LT |
1631 | |
1632 | size = sizeof(struct ti_write_data_bytes) + 2; | |
1633 | data = kmalloc(size, GFP_KERNEL); | |
1634 | if (!data) { | |
441b62c1 | 1635 | dev_err(dev, "%s - out of memory\n", __func__); |
1da177e4 LT |
1636 | return -ENOMEM; |
1637 | } | |
1638 | ||
1639 | data->bAddrType = TI_RW_DATA_ADDR_XDATA; | |
1640 | data->bDataType = TI_RW_DATA_BYTE; | |
1641 | data->bDataCounter = 1; | |
1642 | data->wBaseAddrHi = cpu_to_be16(addr>>16); | |
1643 | data->wBaseAddrLo = cpu_to_be16(addr); | |
1644 | data->bData[0] = mask; | |
1645 | data->bData[1] = byte; | |
1646 | ||
1647 | status = ti_command_out_sync(tdev, TI_WRITE_DATA, TI_RAM_PORT, 0, | |
1648 | (__u8 *)data, size); | |
1649 | ||
1650 | if (status < 0) | |
441b62c1 | 1651 | dev_err(dev, "%s - failed, %d\n", __func__, status); |
1da177e4 LT |
1652 | |
1653 | kfree(data); | |
1654 | ||
1655 | return status; | |
1656 | } | |
1657 | ||
95da310e AC |
1658 | static int ti_do_download(struct usb_device *dev, int pipe, |
1659 | u8 *buffer, int size) | |
1da177e4 | 1660 | { |
1da177e4 | 1661 | int pos; |
95da310e | 1662 | u8 cs = 0; |
1da177e4 | 1663 | int done; |
1da177e4 | 1664 | struct ti_firmware_header *header; |
87ea8c88 | 1665 | int status = 0; |
95da310e | 1666 | int len; |
a30fa793 AC |
1667 | |
1668 | for (pos = sizeof(struct ti_firmware_header); pos < size; pos++) | |
1da177e4 LT |
1669 | cs = (__u8)(cs + buffer[pos]); |
1670 | ||
1671 | header = (struct ti_firmware_header *)buffer; | |
a30fa793 | 1672 | header->wLength = cpu_to_le16((__u16)(size |
95da310e | 1673 | - sizeof(struct ti_firmware_header))); |
1da177e4 LT |
1674 | header->bCheckSum = cs; |
1675 | ||
441b62c1 | 1676 | dbg("%s - downloading firmware", __func__); |
95da310e AC |
1677 | for (pos = 0; pos < size; pos += done) { |
1678 | len = min(size - pos, TI_DOWNLOAD_MAX_PACKET_SIZE); | |
1679 | status = usb_bulk_msg(dev, pipe, buffer + pos, len, | |
1680 | &done, 1000); | |
1da177e4 LT |
1681 | if (status) |
1682 | break; | |
1683 | } | |
95da310e AC |
1684 | return status; |
1685 | } | |
1da177e4 | 1686 | |
05a3d905 | 1687 | static int ti_download_firmware(struct ti_device *tdev) |
95da310e | 1688 | { |
05a3d905 | 1689 | int status; |
95da310e AC |
1690 | int buffer_size; |
1691 | __u8 *buffer; | |
1692 | struct usb_device *dev = tdev->td_serial->dev; | |
1693 | unsigned int pipe = usb_sndbulkpipe(dev, | |
1694 | tdev->td_serial->port[0]->bulk_out_endpointAddress); | |
1695 | const struct firmware *fw_p; | |
1696 | char buf[32]; | |
1da177e4 | 1697 | |
cdc04834 | 1698 | dbg("%s\n", __func__); |
05a3d905 CA |
1699 | /* try ID specific firmware first, then try generic firmware */ |
1700 | sprintf(buf, "ti_usb-v%04x-p%04x.fw", dev->descriptor.idVendor, | |
1701 | dev->descriptor.idProduct); | |
1702 | if ((status = request_firmware(&fw_p, buf, &dev->dev)) != 0) { | |
cb7a7c6a CA |
1703 | buf[0] = '\0'; |
1704 | if (dev->descriptor.idVendor == MTS_VENDOR_ID) { | |
1705 | switch (dev->descriptor.idProduct) { | |
1706 | case MTS_CDMA_PRODUCT_ID: | |
1707 | strcpy(buf, "mts_cdma.fw"); | |
1708 | break; | |
1709 | case MTS_GSM_PRODUCT_ID: | |
1710 | strcpy(buf, "mts_gsm.fw"); | |
1711 | break; | |
1712 | case MTS_EDGE_PRODUCT_ID: | |
1713 | strcpy(buf, "mts_edge.fw"); | |
1714 | break; | |
cdc04834 AM |
1715 | case MTS_MT9234MU_PRODUCT_ID: |
1716 | strcpy(buf, "mts_mt9234mu.fw"); | |
1717 | break; | |
1718 | case MTS_MT9234ZBA_PRODUCT_ID: | |
1719 | strcpy(buf, "mts_mt9234zba.fw"); | |
1720 | break; | |
1721 | case MTS_MT9234ZBAOLD_PRODUCT_ID: | |
1722 | strcpy(buf, "mts_mt9234zba.fw"); | |
1723 | break; } | |
cb7a7c6a CA |
1724 | } |
1725 | if (buf[0] == '\0') { | |
1726 | if (tdev->td_is_3410) | |
1727 | strcpy(buf, "ti_3410.fw"); | |
1728 | else | |
1729 | strcpy(buf, "ti_5052.fw"); | |
1730 | } | |
05a3d905 CA |
1731 | status = request_firmware(&fw_p, buf, &dev->dev); |
1732 | } | |
1733 | if (status) { | |
95da310e AC |
1734 | dev_err(&dev->dev, "%s - firmware not found\n", __func__); |
1735 | return -ENOENT; | |
1736 | } | |
1737 | if (fw_p->size > TI_FIRMWARE_BUF_SIZE) { | |
75181f38 | 1738 | dev_err(&dev->dev, "%s - firmware too large %zu\n", __func__, fw_p->size); |
95da310e AC |
1739 | return -ENOENT; |
1740 | } | |
1741 | ||
1742 | buffer_size = TI_FIRMWARE_BUF_SIZE + sizeof(struct ti_firmware_header); | |
1743 | buffer = kmalloc(buffer_size, GFP_KERNEL); | |
1744 | if (buffer) { | |
1745 | memcpy(buffer, fw_p->data, fw_p->size); | |
1746 | memset(buffer + fw_p->size, 0xff, buffer_size - fw_p->size); | |
2bcbe4c1 | 1747 | status = ti_do_download(dev, pipe, buffer, fw_p->size); |
95da310e | 1748 | kfree(buffer); |
05a3d905 | 1749 | } else { |
cdc04834 | 1750 | dbg("%s ENOMEM\n", __func__); |
05a3d905 | 1751 | status = -ENOMEM; |
95da310e AC |
1752 | } |
1753 | release_firmware(fw_p); | |
1da177e4 | 1754 | if (status) { |
a30fa793 AC |
1755 | dev_err(&dev->dev, "%s - error downloading firmware, %d\n", |
1756 | __func__, status); | |
1da177e4 LT |
1757 | return status; |
1758 | } | |
1759 | ||
441b62c1 | 1760 | dbg("%s - download successful", __func__); |
1da177e4 LT |
1761 | |
1762 | return 0; | |
1763 | } | |
1764 | ||
1765 | ||
1766 | /* Circular Buffer Functions */ | |
1767 | ||
1768 | /* | |
1769 | * ti_buf_alloc | |
1770 | * | |
1771 | * Allocate a circular buffer and all associated memory. | |
1772 | */ | |
1773 | ||
1774 | static struct circ_buf *ti_buf_alloc(void) | |
1775 | { | |
1776 | struct circ_buf *cb; | |
1777 | ||
5cbded58 | 1778 | cb = kmalloc(sizeof(struct circ_buf), GFP_KERNEL); |
1da177e4 LT |
1779 | if (cb == NULL) |
1780 | return NULL; | |
1781 | ||
1782 | cb->buf = kmalloc(TI_WRITE_BUF_SIZE, GFP_KERNEL); | |
1783 | if (cb->buf == NULL) { | |
1784 | kfree(cb); | |
1785 | return NULL; | |
1786 | } | |
1787 | ||
1788 | ti_buf_clear(cb); | |
1789 | ||
1790 | return cb; | |
1791 | } | |
1792 | ||
1793 | ||
1794 | /* | |
1795 | * ti_buf_free | |
1796 | * | |
1797 | * Free the buffer and all associated memory. | |
1798 | */ | |
1799 | ||
1800 | static void ti_buf_free(struct circ_buf *cb) | |
1801 | { | |
1802 | kfree(cb->buf); | |
1803 | kfree(cb); | |
1804 | } | |
1805 | ||
1806 | ||
1807 | /* | |
1808 | * ti_buf_clear | |
1809 | * | |
1810 | * Clear out all data in the circular buffer. | |
1811 | */ | |
1812 | ||
1813 | static void ti_buf_clear(struct circ_buf *cb) | |
1814 | { | |
1815 | cb->head = cb->tail = 0; | |
1816 | } | |
1817 | ||
1818 | ||
1819 | /* | |
1820 | * ti_buf_data_avail | |
1821 | * | |
1822 | * Return the number of bytes of data available in the circular | |
1823 | * buffer. | |
1824 | */ | |
1825 | ||
1826 | static int ti_buf_data_avail(struct circ_buf *cb) | |
1827 | { | |
a30fa793 | 1828 | return CIRC_CNT(cb->head, cb->tail, TI_WRITE_BUF_SIZE); |
1da177e4 LT |
1829 | } |
1830 | ||
1831 | ||
1832 | /* | |
1833 | * ti_buf_space_avail | |
1834 | * | |
1835 | * Return the number of bytes of space available in the circular | |
1836 | * buffer. | |
1837 | */ | |
1838 | ||
1839 | static int ti_buf_space_avail(struct circ_buf *cb) | |
1840 | { | |
a30fa793 | 1841 | return CIRC_SPACE(cb->head, cb->tail, TI_WRITE_BUF_SIZE); |
1da177e4 LT |
1842 | } |
1843 | ||
1844 | ||
1845 | /* | |
1846 | * ti_buf_put | |
1847 | * | |
1848 | * Copy data data from a user buffer and put it into the circular buffer. | |
1849 | * Restrict to the amount of space available. | |
1850 | * | |
1851 | * Return the number of bytes copied. | |
1852 | */ | |
1853 | ||
1854 | static int ti_buf_put(struct circ_buf *cb, const char *buf, int count) | |
1855 | { | |
1856 | int c, ret = 0; | |
1857 | ||
1858 | while (1) { | |
1859 | c = CIRC_SPACE_TO_END(cb->head, cb->tail, TI_WRITE_BUF_SIZE); | |
1860 | if (count < c) | |
1861 | c = count; | |
1862 | if (c <= 0) | |
1863 | break; | |
1864 | memcpy(cb->buf + cb->head, buf, c); | |
1865 | cb->head = (cb->head + c) & (TI_WRITE_BUF_SIZE-1); | |
1866 | buf += c; | |
1867 | count -= c; | |
1868 | ret += c; | |
1869 | } | |
1870 | ||
1871 | return ret; | |
1872 | } | |
1873 | ||
1874 | ||
1875 | /* | |
1876 | * ti_buf_get | |
1877 | * | |
1878 | * Get data from the circular buffer and copy to the given buffer. | |
1879 | * Restrict to the amount of data available. | |
1880 | * | |
1881 | * Return the number of bytes copied. | |
1882 | */ | |
1883 | ||
1884 | static int ti_buf_get(struct circ_buf *cb, char *buf, int count) | |
1885 | { | |
1886 | int c, ret = 0; | |
1887 | ||
1888 | while (1) { | |
1889 | c = CIRC_CNT_TO_END(cb->head, cb->tail, TI_WRITE_BUF_SIZE); | |
1890 | if (count < c) | |
1891 | c = count; | |
1892 | if (c <= 0) | |
1893 | break; | |
1894 | memcpy(buf, cb->buf + cb->tail, c); | |
1895 | cb->tail = (cb->tail + c) & (TI_WRITE_BUF_SIZE-1); | |
1896 | buf += c; | |
1897 | count -= c; | |
1898 | ret += c; | |
1899 | } | |
1900 | ||
1901 | return ret; | |
1902 | } |