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 */ | |
97dcf041 | 175 | static struct usb_device_id ti_id_table_3410[10+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) }, | |
1a1fab51 | 183 | { USB_DEVICE(IBM_VENDOR_ID, IBM_4543_PRODUCT_ID) }, |
97dcf041 ON |
184 | { USB_DEVICE(IBM_VENDOR_ID, IBM_454B_PRODUCT_ID) }, |
185 | { USB_DEVICE(IBM_VENDOR_ID, IBM_454C_PRODUCT_ID) }, | |
1da177e4 LT |
186 | }; |
187 | ||
97dcf041 | 188 | static struct usb_device_id ti_id_table_5052[5+TI_EXTRA_VID_PID_COUNT+1] = { |
1da177e4 LT |
189 | { USB_DEVICE(TI_VENDOR_ID, TI_5052_BOOT_PRODUCT_ID) }, |
190 | { USB_DEVICE(TI_VENDOR_ID, TI_5152_BOOT_PRODUCT_ID) }, | |
191 | { USB_DEVICE(TI_VENDOR_ID, TI_5052_EEPROM_PRODUCT_ID) }, | |
192 | { USB_DEVICE(TI_VENDOR_ID, TI_5052_FIRMWARE_PRODUCT_ID) }, | |
193 | }; | |
194 | ||
97dcf041 | 195 | static struct usb_device_id ti_id_table_combined[14+2*TI_EXTRA_VID_PID_COUNT+1] = { |
1da177e4 | 196 | { USB_DEVICE(TI_VENDOR_ID, TI_3410_PRODUCT_ID) }, |
1f54a6ae | 197 | { USB_DEVICE(TI_VENDOR_ID, TI_3410_EZ430_ID) }, |
cb7a7c6a CA |
198 | { USB_DEVICE(MTS_VENDOR_ID, MTS_GSM_NO_FW_PRODUCT_ID) }, |
199 | { USB_DEVICE(MTS_VENDOR_ID, MTS_CDMA_NO_FW_PRODUCT_ID) }, | |
200 | { USB_DEVICE(MTS_VENDOR_ID, MTS_CDMA_PRODUCT_ID) }, | |
201 | { USB_DEVICE(MTS_VENDOR_ID, MTS_GSM_PRODUCT_ID) }, | |
202 | { USB_DEVICE(MTS_VENDOR_ID, MTS_EDGE_PRODUCT_ID) }, | |
1da177e4 LT |
203 | { USB_DEVICE(TI_VENDOR_ID, TI_5052_BOOT_PRODUCT_ID) }, |
204 | { USB_DEVICE(TI_VENDOR_ID, TI_5152_BOOT_PRODUCT_ID) }, | |
205 | { USB_DEVICE(TI_VENDOR_ID, TI_5052_EEPROM_PRODUCT_ID) }, | |
206 | { USB_DEVICE(TI_VENDOR_ID, TI_5052_FIRMWARE_PRODUCT_ID) }, | |
1a1fab51 | 207 | { USB_DEVICE(IBM_VENDOR_ID, IBM_4543_PRODUCT_ID) }, |
97dcf041 ON |
208 | { USB_DEVICE(IBM_VENDOR_ID, IBM_454B_PRODUCT_ID) }, |
209 | { USB_DEVICE(IBM_VENDOR_ID, IBM_454C_PRODUCT_ID) }, | |
1da177e4 LT |
210 | { } |
211 | }; | |
212 | ||
213 | static struct usb_driver ti_usb_driver = { | |
1da177e4 LT |
214 | .name = "ti_usb_3410_5052", |
215 | .probe = usb_serial_probe, | |
216 | .disconnect = usb_serial_disconnect, | |
217 | .id_table = ti_id_table_combined, | |
ba9dc657 | 218 | .no_dynamic_id = 1, |
1da177e4 LT |
219 | }; |
220 | ||
ea65370d | 221 | static struct usb_serial_driver ti_1port_device = { |
18fcac35 | 222 | .driver = { |
269bda1c GKH |
223 | .owner = THIS_MODULE, |
224 | .name = "ti_usb_3410_5052_1", | |
18fcac35 | 225 | }, |
269bda1c | 226 | .description = "TI USB 3410 1 port adapter", |
d9b1b787 | 227 | .usb_driver = &ti_usb_driver, |
1da177e4 | 228 | .id_table = ti_id_table_3410, |
1da177e4 LT |
229 | .num_ports = 1, |
230 | .attach = ti_startup, | |
f9c99bb8 | 231 | .release = ti_release, |
1da177e4 LT |
232 | .open = ti_open, |
233 | .close = ti_close, | |
234 | .write = ti_write, | |
235 | .write_room = ti_write_room, | |
236 | .chars_in_buffer = ti_chars_in_buffer, | |
237 | .throttle = ti_throttle, | |
238 | .unthrottle = ti_unthrottle, | |
239 | .ioctl = ti_ioctl, | |
240 | .set_termios = ti_set_termios, | |
241 | .tiocmget = ti_tiocmget, | |
242 | .tiocmset = ti_tiocmset, | |
243 | .break_ctl = ti_break, | |
244 | .read_int_callback = ti_interrupt_callback, | |
245 | .read_bulk_callback = ti_bulk_in_callback, | |
246 | .write_bulk_callback = ti_bulk_out_callback, | |
247 | }; | |
248 | ||
ea65370d | 249 | static struct usb_serial_driver ti_2port_device = { |
18fcac35 | 250 | .driver = { |
269bda1c GKH |
251 | .owner = THIS_MODULE, |
252 | .name = "ti_usb_3410_5052_2", | |
18fcac35 | 253 | }, |
269bda1c | 254 | .description = "TI USB 5052 2 port adapter", |
d9b1b787 | 255 | .usb_driver = &ti_usb_driver, |
1da177e4 | 256 | .id_table = ti_id_table_5052, |
1da177e4 LT |
257 | .num_ports = 2, |
258 | .attach = ti_startup, | |
f9c99bb8 | 259 | .release = ti_release, |
1da177e4 LT |
260 | .open = ti_open, |
261 | .close = ti_close, | |
262 | .write = ti_write, | |
263 | .write_room = ti_write_room, | |
264 | .chars_in_buffer = ti_chars_in_buffer, | |
265 | .throttle = ti_throttle, | |
266 | .unthrottle = ti_unthrottle, | |
267 | .ioctl = ti_ioctl, | |
268 | .set_termios = ti_set_termios, | |
269 | .tiocmget = ti_tiocmget, | |
270 | .tiocmset = ti_tiocmset, | |
271 | .break_ctl = ti_break, | |
272 | .read_int_callback = ti_interrupt_callback, | |
273 | .read_bulk_callback = ti_bulk_in_callback, | |
274 | .write_bulk_callback = ti_bulk_out_callback, | |
275 | }; | |
276 | ||
277 | ||
278 | /* Module */ | |
279 | ||
280 | MODULE_AUTHOR(TI_DRIVER_AUTHOR); | |
281 | MODULE_DESCRIPTION(TI_DRIVER_DESC); | |
282 | MODULE_VERSION(TI_DRIVER_VERSION); | |
283 | MODULE_LICENSE("GPL"); | |
284 | ||
5f24e2d6 DW |
285 | MODULE_FIRMWARE("ti_3410.fw"); |
286 | MODULE_FIRMWARE("ti_5052.fw"); | |
7df52316 CA |
287 | MODULE_FIRMWARE("mts_cdma.fw"); |
288 | MODULE_FIRMWARE("mts_gsm.fw"); | |
289 | MODULE_FIRMWARE("mts_edge.fw"); | |
5f24e2d6 | 290 | |
1da177e4 LT |
291 | module_param(debug, bool, S_IRUGO | S_IWUSR); |
292 | MODULE_PARM_DESC(debug, "Enable debugging, 0=no, 1=yes"); | |
293 | ||
1da177e4 | 294 | module_param(closing_wait, int, S_IRUGO | S_IWUSR); |
a30fa793 AC |
295 | MODULE_PARM_DESC(closing_wait, |
296 | "Maximum wait for data to drain in close, in .01 secs, default is 4000"); | |
1da177e4 LT |
297 | |
298 | module_param_array(vendor_3410, ushort, &vendor_3410_count, S_IRUGO); | |
a30fa793 AC |
299 | MODULE_PARM_DESC(vendor_3410, |
300 | "Vendor ids for 3410 based devices, 1-5 short integers"); | |
1da177e4 | 301 | module_param_array(product_3410, ushort, &product_3410_count, S_IRUGO); |
a30fa793 AC |
302 | MODULE_PARM_DESC(product_3410, |
303 | "Product ids for 3410 based devices, 1-5 short integers"); | |
1da177e4 | 304 | module_param_array(vendor_5052, ushort, &vendor_5052_count, S_IRUGO); |
a30fa793 AC |
305 | MODULE_PARM_DESC(vendor_5052, |
306 | "Vendor ids for 5052 based devices, 1-5 short integers"); | |
1da177e4 | 307 | module_param_array(product_5052, ushort, &product_5052_count, S_IRUGO); |
a30fa793 AC |
308 | MODULE_PARM_DESC(product_5052, |
309 | "Product ids for 5052 based devices, 1-5 short integers"); | |
1da177e4 LT |
310 | |
311 | MODULE_DEVICE_TABLE(usb, ti_id_table_combined); | |
312 | ||
313 | ||
314 | /* Functions */ | |
315 | ||
316 | static int __init ti_init(void) | |
317 | { | |
05a3d905 | 318 | int i, j, c; |
1da177e4 LT |
319 | int ret; |
320 | ||
1da177e4 | 321 | /* insert extra vendor and product ids */ |
05a3d905 | 322 | c = ARRAY_SIZE(ti_id_table_combined) - 2 * TI_EXTRA_VID_PID_COUNT - 1; |
52950ed4 | 323 | j = ARRAY_SIZE(ti_id_table_3410) - TI_EXTRA_VID_PID_COUNT - 1; |
05a3d905 | 324 | for (i = 0; i < min(vendor_3410_count, product_3410_count); i++, j++, c++) { |
1da177e4 LT |
325 | ti_id_table_3410[j].idVendor = vendor_3410[i]; |
326 | ti_id_table_3410[j].idProduct = product_3410[i]; | |
327 | ti_id_table_3410[j].match_flags = USB_DEVICE_ID_MATCH_DEVICE; | |
05a3d905 CA |
328 | ti_id_table_combined[c].idVendor = vendor_3410[i]; |
329 | ti_id_table_combined[c].idProduct = product_3410[i]; | |
330 | ti_id_table_combined[c].match_flags = USB_DEVICE_ID_MATCH_DEVICE; | |
1da177e4 | 331 | } |
52950ed4 | 332 | j = ARRAY_SIZE(ti_id_table_5052) - TI_EXTRA_VID_PID_COUNT - 1; |
05a3d905 | 333 | for (i = 0; i < min(vendor_5052_count, product_5052_count); i++, j++, c++) { |
1da177e4 LT |
334 | ti_id_table_5052[j].idVendor = vendor_5052[i]; |
335 | ti_id_table_5052[j].idProduct = product_5052[i]; | |
336 | ti_id_table_5052[j].match_flags = USB_DEVICE_ID_MATCH_DEVICE; | |
05a3d905 CA |
337 | ti_id_table_combined[c].idVendor = vendor_5052[i]; |
338 | ti_id_table_combined[c].idProduct = product_5052[i]; | |
339 | ti_id_table_combined[c].match_flags = USB_DEVICE_ID_MATCH_DEVICE; | |
1da177e4 LT |
340 | } |
341 | ||
342 | ret = usb_serial_register(&ti_1port_device); | |
343 | if (ret) | |
344 | goto failed_1port; | |
345 | ret = usb_serial_register(&ti_2port_device); | |
346 | if (ret) | |
347 | goto failed_2port; | |
348 | ||
349 | ret = usb_register(&ti_usb_driver); | |
350 | if (ret) | |
351 | goto failed_usb; | |
352 | ||
c197a8db GKH |
353 | printk(KERN_INFO KBUILD_MODNAME ": " TI_DRIVER_VERSION ":" |
354 | TI_DRIVER_DESC "\n"); | |
1da177e4 LT |
355 | |
356 | return 0; | |
357 | ||
358 | failed_usb: | |
359 | usb_serial_deregister(&ti_2port_device); | |
360 | failed_2port: | |
361 | usb_serial_deregister(&ti_1port_device); | |
362 | failed_1port: | |
363 | return ret; | |
364 | } | |
365 | ||
366 | ||
367 | static void __exit ti_exit(void) | |
368 | { | |
369 | usb_serial_deregister(&ti_1port_device); | |
370 | usb_serial_deregister(&ti_2port_device); | |
371 | usb_deregister(&ti_usb_driver); | |
372 | } | |
373 | ||
374 | ||
375 | module_init(ti_init); | |
376 | module_exit(ti_exit); | |
377 | ||
378 | ||
379 | static int ti_startup(struct usb_serial *serial) | |
380 | { | |
381 | struct ti_device *tdev; | |
382 | struct ti_port *tport; | |
383 | struct usb_device *dev = serial->dev; | |
384 | int status; | |
385 | int i; | |
386 | ||
387 | ||
388 | dbg("%s - product 0x%4X, num configurations %d, configuration value %d", | |
441b62c1 | 389 | __func__, le16_to_cpu(dev->descriptor.idProduct), |
1da177e4 LT |
390 | dev->descriptor.bNumConfigurations, |
391 | dev->actconfig->desc.bConfigurationValue); | |
392 | ||
393 | /* create device structure */ | |
80b6ca48 | 394 | tdev = kzalloc(sizeof(struct ti_device), GFP_KERNEL); |
1da177e4 | 395 | if (tdev == NULL) { |
441b62c1 | 396 | dev_err(&dev->dev, "%s - out of memory\n", __func__); |
1da177e4 LT |
397 | return -ENOMEM; |
398 | } | |
9da0068a | 399 | mutex_init(&tdev->td_open_close_lock); |
1da177e4 LT |
400 | tdev->td_serial = serial; |
401 | usb_set_serial_data(serial, tdev); | |
402 | ||
403 | /* determine device type */ | |
404 | if (usb_match_id(serial->interface, ti_id_table_3410)) | |
405 | tdev->td_is_3410 = 1; | |
a30fa793 AC |
406 | dbg("%s - device type is %s", __func__, |
407 | tdev->td_is_3410 ? "3410" : "5052"); | |
1da177e4 LT |
408 | |
409 | /* if we have only 1 configuration, download firmware */ | |
410 | if (dev->descriptor.bNumConfigurations == 1) { | |
05a3d905 | 411 | if ((status = ti_download_firmware(tdev)) != 0) |
1da177e4 LT |
412 | goto free_tdev; |
413 | ||
414 | /* 3410 must be reset, 5052 resets itself */ | |
415 | if (tdev->td_is_3410) { | |
416 | msleep_interruptible(100); | |
417 | usb_reset_device(dev); | |
418 | } | |
419 | ||
420 | status = -ENODEV; | |
421 | goto free_tdev; | |
a30fa793 | 422 | } |
1da177e4 | 423 | |
413ba6fb | 424 | /* the second configuration must be set */ |
1da177e4 | 425 | if (dev->actconfig->desc.bConfigurationValue == TI_BOOT_CONFIG) { |
413ba6fb ON |
426 | status = usb_driver_set_configuration(dev, TI_ACTIVE_CONFIG); |
427 | status = status ? status : -ENODEV; | |
1da177e4 LT |
428 | goto free_tdev; |
429 | } | |
430 | ||
431 | /* set up port structures */ | |
432 | for (i = 0; i < serial->num_ports; ++i) { | |
7ac9da10 | 433 | tport = kzalloc(sizeof(struct ti_port), GFP_KERNEL); |
1da177e4 | 434 | if (tport == NULL) { |
441b62c1 | 435 | dev_err(&dev->dev, "%s - out of memory\n", __func__); |
1da177e4 LT |
436 | status = -ENOMEM; |
437 | goto free_tports; | |
438 | } | |
1da177e4 | 439 | spin_lock_init(&tport->tp_lock); |
a30fa793 AC |
440 | tport->tp_uart_base_addr = (i == 0 ? |
441 | TI_UART1_BASE_ADDR : TI_UART2_BASE_ADDR); | |
1da177e4 LT |
442 | tport->tp_closing_wait = closing_wait; |
443 | init_waitqueue_head(&tport->tp_msr_wait); | |
444 | init_waitqueue_head(&tport->tp_write_wait); | |
445 | tport->tp_write_buf = ti_buf_alloc(); | |
446 | if (tport->tp_write_buf == NULL) { | |
441b62c1 | 447 | dev_err(&dev->dev, "%s - out of memory\n", __func__); |
1da177e4 LT |
448 | kfree(tport); |
449 | status = -ENOMEM; | |
450 | goto free_tports; | |
451 | } | |
452 | tport->tp_port = serial->port[i]; | |
453 | tport->tp_tdev = tdev; | |
454 | usb_set_serial_port_data(serial->port[i], tport); | |
455 | tport->tp_uart_mode = 0; /* default is RS232 */ | |
456 | } | |
a30fa793 | 457 | |
1da177e4 LT |
458 | return 0; |
459 | ||
460 | free_tports: | |
a30fa793 | 461 | for (--i; i >= 0; --i) { |
1da177e4 LT |
462 | tport = usb_get_serial_port_data(serial->port[i]); |
463 | ti_buf_free(tport->tp_write_buf); | |
464 | kfree(tport); | |
465 | usb_set_serial_port_data(serial->port[i], NULL); | |
466 | } | |
467 | free_tdev: | |
468 | kfree(tdev); | |
469 | usb_set_serial_data(serial, NULL); | |
470 | return status; | |
471 | } | |
472 | ||
473 | ||
f9c99bb8 | 474 | static void ti_release(struct usb_serial *serial) |
1da177e4 LT |
475 | { |
476 | int i; | |
477 | struct ti_device *tdev = usb_get_serial_data(serial); | |
478 | struct ti_port *tport; | |
479 | ||
441b62c1 | 480 | dbg("%s", __func__); |
1da177e4 | 481 | |
a30fa793 | 482 | for (i = 0; i < serial->num_ports; ++i) { |
1da177e4 LT |
483 | tport = usb_get_serial_port_data(serial->port[i]); |
484 | if (tport) { | |
485 | ti_buf_free(tport->tp_write_buf); | |
486 | kfree(tport); | |
1da177e4 LT |
487 | } |
488 | } | |
489 | ||
1bc3c9e1 | 490 | kfree(tdev); |
1da177e4 LT |
491 | } |
492 | ||
493 | ||
a509a7e4 | 494 | static int ti_open(struct tty_struct *tty, struct usb_serial_port *port) |
1da177e4 LT |
495 | { |
496 | struct ti_port *tport = usb_get_serial_port_data(port); | |
497 | struct ti_device *tdev; | |
498 | struct usb_device *dev; | |
499 | struct urb *urb; | |
500 | int port_number; | |
501 | int status; | |
a30fa793 AC |
502 | __u16 open_settings = (__u8)(TI_PIPE_MODE_CONTINOUS | |
503 | TI_PIPE_TIMEOUT_ENABLE | | |
1da177e4 LT |
504 | (TI_TRANSFER_TIMEOUT << 2)); |
505 | ||
441b62c1 | 506 | dbg("%s - port %d", __func__, port->number); |
1da177e4 LT |
507 | |
508 | if (tport == NULL) | |
509 | return -ENODEV; | |
510 | ||
511 | dev = port->serial->dev; | |
512 | tdev = tport->tp_tdev; | |
513 | ||
514 | /* only one open on any port on a device at a time */ | |
9da0068a | 515 | if (mutex_lock_interruptible(&tdev->td_open_close_lock)) |
1da177e4 LT |
516 | return -ERESTARTSYS; |
517 | ||
1da177e4 LT |
518 | port_number = port->number - port->serial->minor; |
519 | ||
520 | memset(&(tport->tp_icount), 0x00, sizeof(tport->tp_icount)); | |
521 | ||
522 | tport->tp_msr = 0; | |
523 | tport->tp_shadow_mcr |= (TI_MCR_RTS | TI_MCR_DTR); | |
524 | ||
525 | /* start interrupt urb the first time a port is opened on this device */ | |
526 | if (tdev->td_open_port_count == 0) { | |
441b62c1 | 527 | dbg("%s - start interrupt in urb", __func__); |
1da177e4 LT |
528 | urb = tdev->td_serial->port[0]->interrupt_in_urb; |
529 | if (!urb) { | |
a30fa793 AC |
530 | dev_err(&port->dev, "%s - no interrupt urb\n", |
531 | __func__); | |
1da177e4 | 532 | status = -EINVAL; |
9da0068a | 533 | goto release_lock; |
1da177e4 LT |
534 | } |
535 | urb->complete = ti_interrupt_callback; | |
536 | urb->context = tdev; | |
537 | urb->dev = dev; | |
538 | status = usb_submit_urb(urb, GFP_KERNEL); | |
539 | if (status) { | |
a30fa793 AC |
540 | dev_err(&port->dev, |
541 | "%s - submit interrupt urb failed, %d\n", | |
542 | __func__, status); | |
9da0068a | 543 | goto release_lock; |
1da177e4 LT |
544 | } |
545 | } | |
546 | ||
95da310e AC |
547 | if (tty) |
548 | ti_set_termios(tty, port, tty->termios); | |
1da177e4 | 549 | |
441b62c1 | 550 | dbg("%s - sending TI_OPEN_PORT", __func__); |
1da177e4 LT |
551 | status = ti_command_out_sync(tdev, TI_OPEN_PORT, |
552 | (__u8)(TI_UART1_PORT + port_number), open_settings, NULL, 0); | |
553 | if (status) { | |
a30fa793 AC |
554 | dev_err(&port->dev, "%s - cannot send open command, %d\n", |
555 | __func__, status); | |
1da177e4 LT |
556 | goto unlink_int_urb; |
557 | } | |
558 | ||
441b62c1 | 559 | dbg("%s - sending TI_START_PORT", __func__); |
1da177e4 LT |
560 | status = ti_command_out_sync(tdev, TI_START_PORT, |
561 | (__u8)(TI_UART1_PORT + port_number), 0, NULL, 0); | |
562 | if (status) { | |
a30fa793 AC |
563 | dev_err(&port->dev, "%s - cannot send start command, %d\n", |
564 | __func__, status); | |
1da177e4 LT |
565 | goto unlink_int_urb; |
566 | } | |
567 | ||
441b62c1 | 568 | dbg("%s - sending TI_PURGE_PORT", __func__); |
1da177e4 LT |
569 | status = ti_command_out_sync(tdev, TI_PURGE_PORT, |
570 | (__u8)(TI_UART1_PORT + port_number), TI_PURGE_INPUT, NULL, 0); | |
571 | if (status) { | |
a30fa793 AC |
572 | dev_err(&port->dev, "%s - cannot clear input buffers, %d\n", |
573 | __func__, status); | |
1da177e4 LT |
574 | goto unlink_int_urb; |
575 | } | |
576 | status = ti_command_out_sync(tdev, TI_PURGE_PORT, | |
577 | (__u8)(TI_UART1_PORT + port_number), TI_PURGE_OUTPUT, NULL, 0); | |
578 | if (status) { | |
a30fa793 AC |
579 | dev_err(&port->dev, "%s - cannot clear output buffers, %d\n", |
580 | __func__, status); | |
1da177e4 LT |
581 | goto unlink_int_urb; |
582 | } | |
583 | ||
584 | /* reset the data toggle on the bulk endpoints to work around bug in | |
585 | * host controllers where things get out of sync some times */ | |
586 | usb_clear_halt(dev, port->write_urb->pipe); | |
587 | usb_clear_halt(dev, port->read_urb->pipe); | |
588 | ||
95da310e AC |
589 | if (tty) |
590 | ti_set_termios(tty, port, tty->termios); | |
1da177e4 | 591 | |
441b62c1 | 592 | dbg("%s - sending TI_OPEN_PORT (2)", __func__); |
1da177e4 LT |
593 | status = ti_command_out_sync(tdev, TI_OPEN_PORT, |
594 | (__u8)(TI_UART1_PORT + port_number), open_settings, NULL, 0); | |
595 | if (status) { | |
a30fa793 AC |
596 | dev_err(&port->dev, "%s - cannot send open command (2), %d\n", |
597 | __func__, status); | |
1da177e4 LT |
598 | goto unlink_int_urb; |
599 | } | |
600 | ||
441b62c1 | 601 | dbg("%s - sending TI_START_PORT (2)", __func__); |
1da177e4 LT |
602 | status = ti_command_out_sync(tdev, TI_START_PORT, |
603 | (__u8)(TI_UART1_PORT + port_number), 0, NULL, 0); | |
604 | if (status) { | |
a30fa793 AC |
605 | dev_err(&port->dev, "%s - cannot send start command (2), %d\n", |
606 | __func__, status); | |
1da177e4 LT |
607 | goto unlink_int_urb; |
608 | } | |
609 | ||
610 | /* start read urb */ | |
441b62c1 | 611 | dbg("%s - start read urb", __func__); |
1da177e4 LT |
612 | urb = port->read_urb; |
613 | if (!urb) { | |
441b62c1 | 614 | dev_err(&port->dev, "%s - no read urb\n", __func__); |
1da177e4 LT |
615 | status = -EINVAL; |
616 | goto unlink_int_urb; | |
617 | } | |
618 | tport->tp_read_urb_state = TI_READ_URB_RUNNING; | |
619 | urb->complete = ti_bulk_in_callback; | |
620 | urb->context = tport; | |
621 | urb->dev = dev; | |
622 | status = usb_submit_urb(urb, GFP_KERNEL); | |
623 | if (status) { | |
a30fa793 AC |
624 | dev_err(&port->dev, "%s - submit read urb failed, %d\n", |
625 | __func__, status); | |
1da177e4 LT |
626 | goto unlink_int_urb; |
627 | } | |
628 | ||
629 | tport->tp_is_open = 1; | |
630 | ++tdev->td_open_port_count; | |
631 | ||
9da0068a | 632 | goto release_lock; |
1da177e4 LT |
633 | |
634 | unlink_int_urb: | |
635 | if (tdev->td_open_port_count == 0) | |
636 | usb_kill_urb(port->serial->port[0]->interrupt_in_urb); | |
9da0068a MK |
637 | release_lock: |
638 | mutex_unlock(&tdev->td_open_close_lock); | |
441b62c1 | 639 | dbg("%s - exit %d", __func__, status); |
1da177e4 LT |
640 | return status; |
641 | } | |
642 | ||
643 | ||
335f8514 | 644 | static void ti_close(struct usb_serial_port *port) |
1da177e4 LT |
645 | { |
646 | struct ti_device *tdev; | |
647 | struct ti_port *tport; | |
648 | int port_number; | |
649 | int status; | |
9da0068a | 650 | int do_unlock; |
1da177e4 | 651 | |
441b62c1 | 652 | dbg("%s - port %d", __func__, port->number); |
a30fa793 | 653 | |
1da177e4 LT |
654 | tdev = usb_get_serial_data(port->serial); |
655 | tport = usb_get_serial_port_data(port); | |
656 | if (tdev == NULL || tport == NULL) | |
657 | return; | |
658 | ||
659 | tport->tp_is_open = 0; | |
660 | ||
661 | ti_drain(tport, (tport->tp_closing_wait*HZ)/100, 1); | |
662 | ||
663 | usb_kill_urb(port->read_urb); | |
664 | usb_kill_urb(port->write_urb); | |
665 | tport->tp_write_urb_in_use = 0; | |
666 | ||
667 | port_number = port->number - port->serial->minor; | |
668 | ||
441b62c1 | 669 | dbg("%s - sending TI_CLOSE_PORT", __func__); |
1da177e4 LT |
670 | status = ti_command_out_sync(tdev, TI_CLOSE_PORT, |
671 | (__u8)(TI_UART1_PORT + port_number), 0, NULL, 0); | |
672 | if (status) | |
a30fa793 AC |
673 | dev_err(&port->dev, |
674 | "%s - cannot send close port command, %d\n" | |
675 | , __func__, status); | |
1da177e4 | 676 | |
9da0068a MK |
677 | /* if mutex_lock is interrupted, continue anyway */ |
678 | do_unlock = !mutex_lock_interruptible(&tdev->td_open_close_lock); | |
1da177e4 LT |
679 | --tport->tp_tdev->td_open_port_count; |
680 | if (tport->tp_tdev->td_open_port_count <= 0) { | |
681 | /* last port is closed, shut down interrupt urb */ | |
682 | usb_kill_urb(port->serial->port[0]->interrupt_in_urb); | |
683 | tport->tp_tdev->td_open_port_count = 0; | |
684 | } | |
9da0068a MK |
685 | if (do_unlock) |
686 | mutex_unlock(&tdev->td_open_close_lock); | |
1da177e4 | 687 | |
441b62c1 | 688 | dbg("%s - exit", __func__); |
1da177e4 LT |
689 | } |
690 | ||
691 | ||
95da310e AC |
692 | static int ti_write(struct tty_struct *tty, struct usb_serial_port *port, |
693 | const unsigned char *data, int count) | |
1da177e4 LT |
694 | { |
695 | struct ti_port *tport = usb_get_serial_port_data(port); | |
696 | unsigned long flags; | |
697 | ||
441b62c1 | 698 | dbg("%s - port %d", __func__, port->number); |
1da177e4 LT |
699 | |
700 | if (count == 0) { | |
441b62c1 | 701 | dbg("%s - write request of 0 bytes", __func__); |
1da177e4 LT |
702 | return 0; |
703 | } | |
704 | ||
705 | if (tport == NULL || !tport->tp_is_open) | |
706 | return -ENODEV; | |
707 | ||
708 | spin_lock_irqsave(&tport->tp_lock, flags); | |
709 | count = ti_buf_put(tport->tp_write_buf, data, count); | |
710 | spin_unlock_irqrestore(&tport->tp_lock, flags); | |
711 | ||
712 | ti_send(tport); | |
713 | ||
714 | return count; | |
715 | } | |
716 | ||
717 | ||
95da310e | 718 | static int ti_write_room(struct tty_struct *tty) |
1da177e4 | 719 | { |
95da310e | 720 | struct usb_serial_port *port = tty->driver_data; |
1da177e4 LT |
721 | struct ti_port *tport = usb_get_serial_port_data(port); |
722 | int room = 0; | |
723 | unsigned long flags; | |
724 | ||
441b62c1 | 725 | dbg("%s - port %d", __func__, port->number); |
1da177e4 LT |
726 | |
727 | if (tport == NULL) | |
23198fda | 728 | return 0; |
a30fa793 | 729 | |
1da177e4 LT |
730 | spin_lock_irqsave(&tport->tp_lock, flags); |
731 | room = ti_buf_space_avail(tport->tp_write_buf); | |
732 | spin_unlock_irqrestore(&tport->tp_lock, flags); | |
733 | ||
441b62c1 | 734 | dbg("%s - returns %d", __func__, room); |
1da177e4 LT |
735 | return room; |
736 | } | |
737 | ||
738 | ||
95da310e | 739 | static int ti_chars_in_buffer(struct tty_struct *tty) |
1da177e4 | 740 | { |
95da310e | 741 | struct usb_serial_port *port = tty->driver_data; |
1da177e4 LT |
742 | struct ti_port *tport = usb_get_serial_port_data(port); |
743 | int chars = 0; | |
744 | unsigned long flags; | |
745 | ||
441b62c1 | 746 | dbg("%s - port %d", __func__, port->number); |
1da177e4 LT |
747 | |
748 | if (tport == NULL) | |
23198fda | 749 | return 0; |
1da177e4 LT |
750 | |
751 | spin_lock_irqsave(&tport->tp_lock, flags); | |
752 | chars = ti_buf_data_avail(tport->tp_write_buf); | |
753 | spin_unlock_irqrestore(&tport->tp_lock, flags); | |
754 | ||
441b62c1 | 755 | dbg("%s - returns %d", __func__, chars); |
1da177e4 LT |
756 | return chars; |
757 | } | |
758 | ||
759 | ||
95da310e | 760 | static void ti_throttle(struct tty_struct *tty) |
1da177e4 | 761 | { |
95da310e | 762 | struct usb_serial_port *port = tty->driver_data; |
1da177e4 | 763 | struct ti_port *tport = usb_get_serial_port_data(port); |
1da177e4 | 764 | |
441b62c1 | 765 | dbg("%s - port %d", __func__, port->number); |
1da177e4 LT |
766 | |
767 | if (tport == NULL) | |
768 | return; | |
769 | ||
1da177e4 LT |
770 | if (I_IXOFF(tty) || C_CRTSCTS(tty)) |
771 | ti_stop_read(tport, tty); | |
772 | ||
773 | } | |
774 | ||
775 | ||
95da310e | 776 | static void ti_unthrottle(struct tty_struct *tty) |
1da177e4 | 777 | { |
95da310e | 778 | struct usb_serial_port *port = tty->driver_data; |
1da177e4 | 779 | struct ti_port *tport = usb_get_serial_port_data(port); |
1da177e4 LT |
780 | int status; |
781 | ||
441b62c1 | 782 | dbg("%s - port %d", __func__, port->number); |
1da177e4 LT |
783 | |
784 | if (tport == NULL) | |
785 | return; | |
786 | ||
1da177e4 LT |
787 | if (I_IXOFF(tty) || C_CRTSCTS(tty)) { |
788 | status = ti_restart_read(tport, tty); | |
789 | if (status) | |
a30fa793 AC |
790 | dev_err(&port->dev, "%s - cannot restart read, %d\n", |
791 | __func__, status); | |
1da177e4 LT |
792 | } |
793 | } | |
794 | ||
795 | ||
95da310e | 796 | static int ti_ioctl(struct tty_struct *tty, struct file *file, |
1da177e4 LT |
797 | unsigned int cmd, unsigned long arg) |
798 | { | |
95da310e | 799 | struct usb_serial_port *port = tty->driver_data; |
1da177e4 LT |
800 | struct ti_port *tport = usb_get_serial_port_data(port); |
801 | struct async_icount cnow; | |
802 | struct async_icount cprev; | |
803 | ||
441b62c1 | 804 | dbg("%s - port %d, cmd = 0x%04X", __func__, port->number, cmd); |
1da177e4 LT |
805 | |
806 | if (tport == NULL) | |
807 | return -ENODEV; | |
808 | ||
809 | switch (cmd) { | |
a30fa793 AC |
810 | case TIOCGSERIAL: |
811 | dbg("%s - (%d) TIOCGSERIAL", __func__, port->number); | |
812 | return ti_get_serial_info(tport, | |
813 | (struct serial_struct __user *)arg); | |
814 | case TIOCSSERIAL: | |
815 | dbg("%s - (%d) TIOCSSERIAL", __func__, port->number); | |
4a90f09b AC |
816 | return ti_set_serial_info(tty, tport, |
817 | (struct serial_struct __user *)arg); | |
a30fa793 AC |
818 | case TIOCMIWAIT: |
819 | dbg("%s - (%d) TIOCMIWAIT", __func__, port->number); | |
820 | cprev = tport->tp_icount; | |
821 | while (1) { | |
822 | interruptible_sleep_on(&tport->tp_msr_wait); | |
823 | if (signal_pending(current)) | |
824 | return -ERESTARTSYS; | |
825 | cnow = tport->tp_icount; | |
826 | if (cnow.rng == cprev.rng && cnow.dsr == cprev.dsr && | |
827 | cnow.dcd == cprev.dcd && cnow.cts == cprev.cts) | |
828 | return -EIO; /* no change => error */ | |
829 | if (((arg & TIOCM_RNG) && (cnow.rng != cprev.rng)) || | |
830 | ((arg & TIOCM_DSR) && (cnow.dsr != cprev.dsr)) || | |
831 | ((arg & TIOCM_CD) && (cnow.dcd != cprev.dcd)) || | |
832 | ((arg & TIOCM_CTS) && (cnow.cts != cprev.cts))) | |
833 | return 0; | |
834 | cprev = cnow; | |
835 | } | |
836 | break; | |
837 | case TIOCGICOUNT: | |
838 | dbg("%s - (%d) TIOCGICOUNT RX=%d, TX=%d", | |
839 | __func__, port->number, | |
840 | tport->tp_icount.rx, tport->tp_icount.tx); | |
841 | if (copy_to_user((void __user *)arg, &tport->tp_icount, | |
842 | sizeof(tport->tp_icount))) | |
843 | return -EFAULT; | |
844 | return 0; | |
1da177e4 | 845 | } |
1da177e4 LT |
846 | return -ENOIOCTLCMD; |
847 | } | |
848 | ||
849 | ||
95da310e AC |
850 | static void ti_set_termios(struct tty_struct *tty, |
851 | struct usb_serial_port *port, struct ktermios *old_termios) | |
1da177e4 LT |
852 | { |
853 | struct ti_port *tport = usb_get_serial_port_data(port); | |
1da177e4 | 854 | struct ti_uart_config *config; |
a30fa793 | 855 | tcflag_t cflag, iflag; |
1da177e4 LT |
856 | int baud; |
857 | int status; | |
858 | int port_number = port->number - port->serial->minor; | |
859 | unsigned int mcr; | |
860 | ||
441b62c1 | 861 | dbg("%s - port %d", __func__, port->number); |
1da177e4 | 862 | |
1da177e4 LT |
863 | cflag = tty->termios->c_cflag; |
864 | iflag = tty->termios->c_iflag; | |
865 | ||
441b62c1 | 866 | dbg("%s - cflag %08x, iflag %08x", __func__, cflag, iflag); |
a30fa793 AC |
867 | dbg("%s - old clfag %08x, old iflag %08x", __func__, |
868 | old_termios->c_cflag, old_termios->c_iflag); | |
1da177e4 LT |
869 | |
870 | if (tport == NULL) | |
871 | return; | |
872 | ||
873 | config = kmalloc(sizeof(*config), GFP_KERNEL); | |
874 | if (!config) { | |
441b62c1 | 875 | dev_err(&port->dev, "%s - out of memory\n", __func__); |
1da177e4 LT |
876 | return; |
877 | } | |
878 | ||
879 | config->wFlags = 0; | |
880 | ||
881 | /* these flags must be set */ | |
882 | config->wFlags |= TI_UART_ENABLE_MS_INTS; | |
883 | config->wFlags |= TI_UART_ENABLE_AUTO_START_DMA; | |
884 | config->bUartMode = (__u8)(tport->tp_uart_mode); | |
885 | ||
886 | switch (cflag & CSIZE) { | |
a30fa793 AC |
887 | case CS5: |
888 | config->bDataBits = TI_UART_5_DATA_BITS; | |
889 | break; | |
890 | case CS6: | |
891 | config->bDataBits = TI_UART_6_DATA_BITS; | |
892 | break; | |
893 | case CS7: | |
894 | config->bDataBits = TI_UART_7_DATA_BITS; | |
895 | break; | |
896 | default: | |
897 | case CS8: | |
898 | config->bDataBits = TI_UART_8_DATA_BITS; | |
899 | break; | |
1da177e4 LT |
900 | } |
901 | ||
537699ef AC |
902 | /* CMSPAR isn't supported by this driver */ |
903 | tty->termios->c_cflag &= ~CMSPAR; | |
904 | ||
1da177e4 LT |
905 | if (cflag & PARENB) { |
906 | if (cflag & PARODD) { | |
907 | config->wFlags |= TI_UART_ENABLE_PARITY_CHECKING; | |
908 | config->bParity = TI_UART_ODD_PARITY; | |
909 | } else { | |
910 | config->wFlags |= TI_UART_ENABLE_PARITY_CHECKING; | |
911 | config->bParity = TI_UART_EVEN_PARITY; | |
912 | } | |
913 | } else { | |
914 | config->wFlags &= ~TI_UART_ENABLE_PARITY_CHECKING; | |
a30fa793 | 915 | config->bParity = TI_UART_NO_PARITY; |
1da177e4 LT |
916 | } |
917 | ||
918 | if (cflag & CSTOPB) | |
919 | config->bStopBits = TI_UART_2_STOP_BITS; | |
920 | else | |
921 | config->bStopBits = TI_UART_1_STOP_BITS; | |
922 | ||
923 | if (cflag & CRTSCTS) { | |
924 | /* RTS flow control must be off to drop RTS for baud rate B0 */ | |
925 | if ((cflag & CBAUD) != B0) | |
926 | config->wFlags |= TI_UART_ENABLE_RTS_IN; | |
927 | config->wFlags |= TI_UART_ENABLE_CTS_OUT; | |
928 | } else { | |
929 | tty->hw_stopped = 0; | |
930 | ti_restart_read(tport, tty); | |
931 | } | |
932 | ||
933 | if (I_IXOFF(tty) || I_IXON(tty)) { | |
934 | config->cXon = START_CHAR(tty); | |
935 | config->cXoff = STOP_CHAR(tty); | |
936 | ||
937 | if (I_IXOFF(tty)) | |
938 | config->wFlags |= TI_UART_ENABLE_X_IN; | |
939 | else | |
940 | ti_restart_read(tport, tty); | |
941 | ||
942 | if (I_IXON(tty)) | |
943 | config->wFlags |= TI_UART_ENABLE_X_OUT; | |
944 | } | |
945 | ||
946 | baud = tty_get_baud_rate(tty); | |
537699ef AC |
947 | if (!baud) |
948 | baud = 9600; | |
1da177e4 LT |
949 | if (tport->tp_tdev->td_is_3410) |
950 | config->wBaudRate = (__u16)((923077 + baud/2) / baud); | |
951 | else | |
952 | config->wBaudRate = (__u16)((461538 + baud/2) / baud); | |
953 | ||
537699ef AC |
954 | /* FIXME: Should calculate resulting baud here and report it back */ |
955 | if ((cflag & CBAUD) != B0) | |
956 | tty_encode_baud_rate(tty, baud, baud); | |
957 | ||
1da177e4 | 958 | dbg("%s - BaudRate=%d, wBaudRate=%d, wFlags=0x%04X, bDataBits=%d, bParity=%d, bStopBits=%d, cXon=%d, cXoff=%d, bUartMode=%d", |
441b62c1 | 959 | __func__, baud, config->wBaudRate, config->wFlags, config->bDataBits, config->bParity, config->bStopBits, config->cXon, config->cXoff, config->bUartMode); |
1da177e4 LT |
960 | |
961 | cpu_to_be16s(&config->wBaudRate); | |
962 | cpu_to_be16s(&config->wFlags); | |
963 | ||
964 | status = ti_command_out_sync(tport->tp_tdev, TI_SET_CONFIG, | |
965 | (__u8)(TI_UART1_PORT + port_number), 0, (__u8 *)config, | |
966 | sizeof(*config)); | |
967 | if (status) | |
a30fa793 AC |
968 | dev_err(&port->dev, "%s - cannot set config on port %d, %d\n", |
969 | __func__, port_number, status); | |
1da177e4 LT |
970 | |
971 | /* SET_CONFIG asserts RTS and DTR, reset them correctly */ | |
972 | mcr = tport->tp_shadow_mcr; | |
973 | /* if baud rate is B0, clear RTS and DTR */ | |
974 | if ((cflag & CBAUD) == B0) | |
975 | mcr &= ~(TI_MCR_DTR | TI_MCR_RTS); | |
976 | status = ti_set_mcr(tport, mcr); | |
977 | if (status) | |
a30fa793 AC |
978 | dev_err(&port->dev, |
979 | "%s - cannot set modem control on port %d, %d\n", | |
980 | __func__, port_number, status); | |
1da177e4 LT |
981 | |
982 | kfree(config); | |
983 | } | |
984 | ||
985 | ||
95da310e | 986 | static int ti_tiocmget(struct tty_struct *tty, struct file *file) |
1da177e4 | 987 | { |
95da310e | 988 | struct usb_serial_port *port = tty->driver_data; |
1da177e4 LT |
989 | struct ti_port *tport = usb_get_serial_port_data(port); |
990 | unsigned int result; | |
991 | unsigned int msr; | |
992 | unsigned int mcr; | |
04ca89d4 | 993 | unsigned long flags; |
1da177e4 | 994 | |
441b62c1 | 995 | dbg("%s - port %d", __func__, port->number); |
1da177e4 LT |
996 | |
997 | if (tport == NULL) | |
998 | return -ENODEV; | |
999 | ||
04ca89d4 | 1000 | spin_lock_irqsave(&tport->tp_lock, flags); |
1da177e4 LT |
1001 | msr = tport->tp_msr; |
1002 | mcr = tport->tp_shadow_mcr; | |
04ca89d4 | 1003 | spin_unlock_irqrestore(&tport->tp_lock, flags); |
1da177e4 LT |
1004 | |
1005 | result = ((mcr & TI_MCR_DTR) ? TIOCM_DTR : 0) | |
1006 | | ((mcr & TI_MCR_RTS) ? TIOCM_RTS : 0) | |
1007 | | ((mcr & TI_MCR_LOOP) ? TIOCM_LOOP : 0) | |
1008 | | ((msr & TI_MSR_CTS) ? TIOCM_CTS : 0) | |
1009 | | ((msr & TI_MSR_CD) ? TIOCM_CAR : 0) | |
1010 | | ((msr & TI_MSR_RI) ? TIOCM_RI : 0) | |
1011 | | ((msr & TI_MSR_DSR) ? TIOCM_DSR : 0); | |
1012 | ||
441b62c1 | 1013 | dbg("%s - 0x%04X", __func__, result); |
1da177e4 LT |
1014 | |
1015 | return result; | |
1016 | } | |
1017 | ||
1018 | ||
95da310e | 1019 | static int ti_tiocmset(struct tty_struct *tty, struct file *file, |
1da177e4 LT |
1020 | unsigned int set, unsigned int clear) |
1021 | { | |
95da310e | 1022 | struct usb_serial_port *port = tty->driver_data; |
1da177e4 LT |
1023 | struct ti_port *tport = usb_get_serial_port_data(port); |
1024 | unsigned int mcr; | |
04ca89d4 | 1025 | unsigned long flags; |
1da177e4 | 1026 | |
441b62c1 | 1027 | dbg("%s - port %d", __func__, port->number); |
1da177e4 LT |
1028 | |
1029 | if (tport == NULL) | |
1030 | return -ENODEV; | |
1031 | ||
04ca89d4 | 1032 | spin_lock_irqsave(&tport->tp_lock, flags); |
1da177e4 LT |
1033 | mcr = tport->tp_shadow_mcr; |
1034 | ||
1035 | if (set & TIOCM_RTS) | |
1036 | mcr |= TI_MCR_RTS; | |
1037 | if (set & TIOCM_DTR) | |
1038 | mcr |= TI_MCR_DTR; | |
1039 | if (set & TIOCM_LOOP) | |
1040 | mcr |= TI_MCR_LOOP; | |
1041 | ||
1042 | if (clear & TIOCM_RTS) | |
1043 | mcr &= ~TI_MCR_RTS; | |
1044 | if (clear & TIOCM_DTR) | |
1045 | mcr &= ~TI_MCR_DTR; | |
1046 | if (clear & TIOCM_LOOP) | |
1047 | mcr &= ~TI_MCR_LOOP; | |
04ca89d4 | 1048 | spin_unlock_irqrestore(&tport->tp_lock, flags); |
1da177e4 LT |
1049 | |
1050 | return ti_set_mcr(tport, mcr); | |
1051 | } | |
1052 | ||
1053 | ||
95da310e | 1054 | static void ti_break(struct tty_struct *tty, int break_state) |
1da177e4 | 1055 | { |
95da310e | 1056 | struct usb_serial_port *port = tty->driver_data; |
1da177e4 LT |
1057 | struct ti_port *tport = usb_get_serial_port_data(port); |
1058 | int status; | |
1059 | ||
441b62c1 | 1060 | dbg("%s - state = %d", __func__, break_state); |
1da177e4 LT |
1061 | |
1062 | if (tport == NULL) | |
1063 | return; | |
1064 | ||
1065 | ti_drain(tport, (tport->tp_closing_wait*HZ)/100, 0); | |
1066 | ||
1067 | status = ti_write_byte(tport->tp_tdev, | |
1068 | tport->tp_uart_base_addr + TI_UART_OFFSET_LCR, | |
1069 | TI_LCR_BREAK, break_state == -1 ? TI_LCR_BREAK : 0); | |
1070 | ||
1071 | if (status) | |
441b62c1 | 1072 | dbg("%s - error setting break, %d", __func__, status); |
1da177e4 LT |
1073 | } |
1074 | ||
1075 | ||
7d12e780 | 1076 | static void ti_interrupt_callback(struct urb *urb) |
1da177e4 | 1077 | { |
cdc97792 | 1078 | struct ti_device *tdev = urb->context; |
1da177e4 LT |
1079 | struct usb_serial_port *port; |
1080 | struct usb_serial *serial = tdev->td_serial; | |
1081 | struct ti_port *tport; | |
1082 | struct device *dev = &urb->dev->dev; | |
1083 | unsigned char *data = urb->transfer_buffer; | |
1084 | int length = urb->actual_length; | |
1085 | int port_number; | |
1086 | int function; | |
52171b48 GKH |
1087 | int status = urb->status; |
1088 | int retval; | |
1da177e4 LT |
1089 | __u8 msr; |
1090 | ||
441b62c1 | 1091 | dbg("%s", __func__); |
1da177e4 | 1092 | |
52171b48 | 1093 | switch (status) { |
1da177e4 LT |
1094 | case 0: |
1095 | break; | |
1096 | case -ECONNRESET: | |
1097 | case -ENOENT: | |
1098 | case -ESHUTDOWN: | |
441b62c1 | 1099 | dbg("%s - urb shutting down, %d", __func__, status); |
1da177e4 LT |
1100 | tdev->td_urb_error = 1; |
1101 | return; | |
1102 | default: | |
52171b48 | 1103 | dev_err(dev, "%s - nonzero urb status, %d\n", |
441b62c1 | 1104 | __func__, status); |
1da177e4 LT |
1105 | tdev->td_urb_error = 1; |
1106 | goto exit; | |
1107 | } | |
1108 | ||
1109 | if (length != 2) { | |
441b62c1 | 1110 | dbg("%s - bad packet size, %d", __func__, length); |
1da177e4 LT |
1111 | goto exit; |
1112 | } | |
1113 | ||
1114 | if (data[0] == TI_CODE_HARDWARE_ERROR) { | |
441b62c1 | 1115 | dev_err(dev, "%s - hardware error, %d\n", __func__, data[1]); |
1da177e4 LT |
1116 | goto exit; |
1117 | } | |
1118 | ||
1119 | port_number = TI_GET_PORT_FROM_CODE(data[0]); | |
1120 | function = TI_GET_FUNC_FROM_CODE(data[0]); | |
1121 | ||
a30fa793 AC |
1122 | dbg("%s - port_number %d, function %d, data 0x%02X", |
1123 | __func__, port_number, function, data[1]); | |
1da177e4 LT |
1124 | |
1125 | if (port_number >= serial->num_ports) { | |
a30fa793 AC |
1126 | dev_err(dev, "%s - bad port number, %d\n", |
1127 | __func__, port_number); | |
1da177e4 LT |
1128 | goto exit; |
1129 | } | |
1130 | ||
1131 | port = serial->port[port_number]; | |
1132 | ||
1133 | tport = usb_get_serial_port_data(port); | |
1134 | if (!tport) | |
1135 | goto exit; | |
1136 | ||
1137 | switch (function) { | |
1138 | case TI_CODE_DATA_ERROR: | |
a30fa793 AC |
1139 | dev_err(dev, "%s - DATA ERROR, port %d, data 0x%02X\n", |
1140 | __func__, port_number, data[1]); | |
1da177e4 LT |
1141 | break; |
1142 | ||
1143 | case TI_CODE_MODEM_STATUS: | |
1144 | msr = data[1]; | |
441b62c1 | 1145 | dbg("%s - port %d, msr 0x%02X", __func__, port_number, msr); |
1da177e4 LT |
1146 | ti_handle_new_msr(tport, msr); |
1147 | break; | |
1148 | ||
1149 | default: | |
a30fa793 AC |
1150 | dev_err(dev, "%s - unknown interrupt code, 0x%02X\n", |
1151 | __func__, data[1]); | |
1da177e4 LT |
1152 | break; |
1153 | } | |
1154 | ||
1155 | exit: | |
52171b48 GKH |
1156 | retval = usb_submit_urb(urb, GFP_ATOMIC); |
1157 | if (retval) | |
1158 | dev_err(dev, "%s - resubmit interrupt urb failed, %d\n", | |
441b62c1 | 1159 | __func__, retval); |
1da177e4 LT |
1160 | } |
1161 | ||
1162 | ||
7d12e780 | 1163 | static void ti_bulk_in_callback(struct urb *urb) |
1da177e4 | 1164 | { |
cdc97792 | 1165 | struct ti_port *tport = urb->context; |
1da177e4 LT |
1166 | struct usb_serial_port *port = tport->tp_port; |
1167 | struct device *dev = &urb->dev->dev; | |
52171b48 GKH |
1168 | int status = urb->status; |
1169 | int retval = 0; | |
4a90f09b | 1170 | struct tty_struct *tty; |
1da177e4 | 1171 | |
441b62c1 | 1172 | dbg("%s", __func__); |
1da177e4 | 1173 | |
52171b48 | 1174 | switch (status) { |
1da177e4 LT |
1175 | case 0: |
1176 | break; | |
1177 | case -ECONNRESET: | |
1178 | case -ENOENT: | |
1179 | case -ESHUTDOWN: | |
441b62c1 | 1180 | dbg("%s - urb shutting down, %d", __func__, status); |
1da177e4 LT |
1181 | tport->tp_tdev->td_urb_error = 1; |
1182 | wake_up_interruptible(&tport->tp_write_wait); | |
1183 | return; | |
1184 | default: | |
52171b48 | 1185 | dev_err(dev, "%s - nonzero urb status, %d\n", |
a30fa793 | 1186 | __func__, status); |
1da177e4 LT |
1187 | tport->tp_tdev->td_urb_error = 1; |
1188 | wake_up_interruptible(&tport->tp_write_wait); | |
1189 | } | |
1190 | ||
52171b48 | 1191 | if (status == -EPIPE) |
1da177e4 LT |
1192 | goto exit; |
1193 | ||
52171b48 | 1194 | if (status) { |
441b62c1 | 1195 | dev_err(dev, "%s - stopping read!\n", __func__); |
1da177e4 LT |
1196 | return; |
1197 | } | |
1198 | ||
4a90f09b | 1199 | tty = tty_port_tty_get(&port->port); |
cf545093 AC |
1200 | if (tty) { |
1201 | if (urb->actual_length) { | |
1202 | usb_serial_debug_data(debug, dev, __func__, | |
1203 | urb->actual_length, urb->transfer_buffer); | |
1204 | ||
1205 | if (!tport->tp_is_open) | |
1206 | dbg("%s - port closed, dropping data", | |
1207 | __func__); | |
1208 | else | |
1209 | ti_recv(&urb->dev->dev, tty, | |
a30fa793 AC |
1210 | urb->transfer_buffer, |
1211 | urb->actual_length); | |
cf545093 AC |
1212 | spin_lock(&tport->tp_lock); |
1213 | tport->tp_icount.rx += urb->actual_length; | |
1214 | spin_unlock(&tport->tp_lock); | |
1215 | } | |
4a90f09b | 1216 | tty_kref_put(tty); |
1da177e4 LT |
1217 | } |
1218 | ||
1219 | exit: | |
1220 | /* continue to read unless stopping */ | |
1221 | spin_lock(&tport->tp_lock); | |
1222 | if (tport->tp_read_urb_state == TI_READ_URB_RUNNING) { | |
1223 | urb->dev = port->serial->dev; | |
52171b48 | 1224 | retval = usb_submit_urb(urb, GFP_ATOMIC); |
1da177e4 LT |
1225 | } else if (tport->tp_read_urb_state == TI_READ_URB_STOPPING) { |
1226 | tport->tp_read_urb_state = TI_READ_URB_STOPPED; | |
1227 | } | |
1228 | spin_unlock(&tport->tp_lock); | |
52171b48 GKH |
1229 | if (retval) |
1230 | dev_err(dev, "%s - resubmit read urb failed, %d\n", | |
441b62c1 | 1231 | __func__, retval); |
1da177e4 LT |
1232 | } |
1233 | ||
1234 | ||
7d12e780 | 1235 | static void ti_bulk_out_callback(struct urb *urb) |
1da177e4 | 1236 | { |
cdc97792 | 1237 | struct ti_port *tport = urb->context; |
1da177e4 LT |
1238 | struct usb_serial_port *port = tport->tp_port; |
1239 | struct device *dev = &urb->dev->dev; | |
52171b48 | 1240 | int status = urb->status; |
1da177e4 | 1241 | |
441b62c1 | 1242 | dbg("%s - port %d", __func__, port->number); |
1da177e4 LT |
1243 | |
1244 | tport->tp_write_urb_in_use = 0; | |
1245 | ||
52171b48 | 1246 | switch (status) { |
1da177e4 LT |
1247 | case 0: |
1248 | break; | |
1249 | case -ECONNRESET: | |
1250 | case -ENOENT: | |
1251 | case -ESHUTDOWN: | |
441b62c1 | 1252 | dbg("%s - urb shutting down, %d", __func__, status); |
1da177e4 LT |
1253 | tport->tp_tdev->td_urb_error = 1; |
1254 | wake_up_interruptible(&tport->tp_write_wait); | |
1255 | return; | |
1256 | default: | |
52171b48 | 1257 | dev_err(dev, "%s - nonzero urb status, %d\n", |
441b62c1 | 1258 | __func__, status); |
1da177e4 LT |
1259 | tport->tp_tdev->td_urb_error = 1; |
1260 | wake_up_interruptible(&tport->tp_write_wait); | |
1261 | } | |
1262 | ||
1263 | /* send any buffered data */ | |
1264 | ti_send(tport); | |
1265 | } | |
1266 | ||
1267 | ||
1268 | static void ti_recv(struct device *dev, struct tty_struct *tty, | |
1269 | unsigned char *data, int length) | |
1270 | { | |
1271 | int cnt; | |
1272 | ||
1273 | do { | |
a108bfcb | 1274 | cnt = tty_insert_flip_string(tty, data, length); |
33f0f88f | 1275 | if (cnt < length) { |
a30fa793 AC |
1276 | dev_err(dev, "%s - dropping data, %d bytes lost\n", |
1277 | __func__, length - cnt); | |
1278 | if (cnt == 0) | |
33f0f88f | 1279 | break; |
1da177e4 | 1280 | } |
33f0f88f | 1281 | tty_flip_buffer_push(tty); |
1da177e4 LT |
1282 | data += cnt; |
1283 | length -= cnt; | |
1284 | } while (length > 0); | |
1285 | ||
1da177e4 LT |
1286 | } |
1287 | ||
1288 | ||
1289 | static void ti_send(struct ti_port *tport) | |
1290 | { | |
1291 | int count, result; | |
1292 | struct usb_serial_port *port = tport->tp_port; | |
4a90f09b | 1293 | struct tty_struct *tty = tty_port_tty_get(&port->port); /* FIXME */ |
1da177e4 LT |
1294 | unsigned long flags; |
1295 | ||
1296 | ||
441b62c1 | 1297 | dbg("%s - port %d", __func__, port->number); |
1da177e4 LT |
1298 | |
1299 | spin_lock_irqsave(&tport->tp_lock, flags); | |
1300 | ||
4a90f09b AC |
1301 | if (tport->tp_write_urb_in_use) |
1302 | goto unlock; | |
1da177e4 LT |
1303 | |
1304 | count = ti_buf_get(tport->tp_write_buf, | |
1305 | port->write_urb->transfer_buffer, | |
1306 | port->bulk_out_size); | |
1307 | ||
4a90f09b AC |
1308 | if (count == 0) |
1309 | goto unlock; | |
1da177e4 LT |
1310 | |
1311 | tport->tp_write_urb_in_use = 1; | |
1312 | ||
1313 | spin_unlock_irqrestore(&tport->tp_lock, flags); | |
1314 | ||
a30fa793 AC |
1315 | usb_serial_debug_data(debug, &port->dev, __func__, count, |
1316 | port->write_urb->transfer_buffer); | |
1da177e4 LT |
1317 | |
1318 | usb_fill_bulk_urb(port->write_urb, port->serial->dev, | |
1319 | usb_sndbulkpipe(port->serial->dev, | |
1320 | port->bulk_out_endpointAddress), | |
1321 | port->write_urb->transfer_buffer, count, | |
1322 | ti_bulk_out_callback, tport); | |
1323 | ||
1324 | result = usb_submit_urb(port->write_urb, GFP_ATOMIC); | |
1325 | if (result) { | |
a30fa793 AC |
1326 | dev_err(&port->dev, "%s - submit write urb failed, %d\n", |
1327 | __func__, result); | |
1328 | tport->tp_write_urb_in_use = 0; | |
1da177e4 LT |
1329 | /* TODO: reschedule ti_send */ |
1330 | } else { | |
1331 | spin_lock_irqsave(&tport->tp_lock, flags); | |
1332 | tport->tp_icount.tx += count; | |
1333 | spin_unlock_irqrestore(&tport->tp_lock, flags); | |
1334 | } | |
1335 | ||
1336 | /* more room in the buffer for new writes, wakeup */ | |
1337 | if (tty) | |
1338 | tty_wakeup(tty); | |
4a90f09b | 1339 | tty_kref_put(tty); |
1da177e4 | 1340 | wake_up_interruptible(&tport->tp_write_wait); |
4a90f09b AC |
1341 | return; |
1342 | unlock: | |
1343 | spin_unlock_irqrestore(&tport->tp_lock, flags); | |
1344 | tty_kref_put(tty); | |
1345 | return; | |
1da177e4 LT |
1346 | } |
1347 | ||
1348 | ||
1349 | static int ti_set_mcr(struct ti_port *tport, unsigned int mcr) | |
1350 | { | |
04ca89d4 | 1351 | unsigned long flags; |
1da177e4 LT |
1352 | int status; |
1353 | ||
1354 | status = ti_write_byte(tport->tp_tdev, | |
1355 | tport->tp_uart_base_addr + TI_UART_OFFSET_MCR, | |
1356 | TI_MCR_RTS | TI_MCR_DTR | TI_MCR_LOOP, mcr); | |
1357 | ||
04ca89d4 | 1358 | spin_lock_irqsave(&tport->tp_lock, flags); |
1da177e4 LT |
1359 | if (!status) |
1360 | tport->tp_shadow_mcr = mcr; | |
04ca89d4 | 1361 | spin_unlock_irqrestore(&tport->tp_lock, flags); |
1da177e4 LT |
1362 | |
1363 | return status; | |
1364 | } | |
1365 | ||
1366 | ||
1367 | static int ti_get_lsr(struct ti_port *tport) | |
1368 | { | |
a30fa793 | 1369 | int size, status; |
1da177e4 LT |
1370 | struct ti_device *tdev = tport->tp_tdev; |
1371 | struct usb_serial_port *port = tport->tp_port; | |
1372 | int port_number = port->number - port->serial->minor; | |
1373 | struct ti_port_status *data; | |
1374 | ||
441b62c1 | 1375 | dbg("%s - port %d", __func__, port->number); |
1da177e4 LT |
1376 | |
1377 | size = sizeof(struct ti_port_status); | |
1378 | data = kmalloc(size, GFP_KERNEL); | |
1379 | if (!data) { | |
441b62c1 | 1380 | dev_err(&port->dev, "%s - out of memory\n", __func__); |
1da177e4 LT |
1381 | return -ENOMEM; |
1382 | } | |
1383 | ||
1384 | status = ti_command_in_sync(tdev, TI_GET_PORT_STATUS, | |
1385 | (__u8)(TI_UART1_PORT+port_number), 0, (__u8 *)data, size); | |
1386 | if (status) { | |
a30fa793 AC |
1387 | dev_err(&port->dev, |
1388 | "%s - get port status command failed, %d\n", | |
1389 | __func__, status); | |
1da177e4 LT |
1390 | goto free_data; |
1391 | } | |
1392 | ||
441b62c1 | 1393 | dbg("%s - lsr 0x%02X", __func__, data->bLSR); |
1da177e4 LT |
1394 | |
1395 | tport->tp_lsr = data->bLSR; | |
1396 | ||
1397 | free_data: | |
1398 | kfree(data); | |
1399 | return status; | |
1400 | } | |
1401 | ||
1402 | ||
1403 | static int ti_get_serial_info(struct ti_port *tport, | |
1404 | struct serial_struct __user *ret_arg) | |
1405 | { | |
1406 | struct usb_serial_port *port = tport->tp_port; | |
1407 | struct serial_struct ret_serial; | |
1408 | ||
1409 | if (!ret_arg) | |
1410 | return -EFAULT; | |
1411 | ||
1412 | memset(&ret_serial, 0, sizeof(ret_serial)); | |
1413 | ||
1414 | ret_serial.type = PORT_16550A; | |
1415 | ret_serial.line = port->serial->minor; | |
1416 | ret_serial.port = port->number - port->serial->minor; | |
1417 | ret_serial.flags = tport->tp_flags; | |
1418 | ret_serial.xmit_fifo_size = TI_WRITE_BUF_SIZE; | |
1419 | ret_serial.baud_base = tport->tp_tdev->td_is_3410 ? 921600 : 460800; | |
1420 | ret_serial.closing_wait = tport->tp_closing_wait; | |
1421 | ||
1422 | if (copy_to_user(ret_arg, &ret_serial, sizeof(*ret_arg))) | |
1423 | return -EFAULT; | |
1424 | ||
1425 | return 0; | |
1426 | } | |
1427 | ||
1428 | ||
4a90f09b | 1429 | static int ti_set_serial_info(struct tty_struct *tty, struct ti_port *tport, |
1da177e4 LT |
1430 | struct serial_struct __user *new_arg) |
1431 | { | |
1da177e4 LT |
1432 | struct serial_struct new_serial; |
1433 | ||
1434 | if (copy_from_user(&new_serial, new_arg, sizeof(new_serial))) | |
1435 | return -EFAULT; | |
1436 | ||
1437 | tport->tp_flags = new_serial.flags & TI_SET_SERIAL_FLAGS; | |
1da177e4 LT |
1438 | tport->tp_closing_wait = new_serial.closing_wait; |
1439 | ||
1440 | return 0; | |
1441 | } | |
1442 | ||
1443 | ||
1444 | static void ti_handle_new_msr(struct ti_port *tport, __u8 msr) | |
1445 | { | |
1446 | struct async_icount *icount; | |
1447 | struct tty_struct *tty; | |
1448 | unsigned long flags; | |
1449 | ||
441b62c1 | 1450 | dbg("%s - msr 0x%02X", __func__, msr); |
1da177e4 LT |
1451 | |
1452 | if (msr & TI_MSR_DELTA_MASK) { | |
1453 | spin_lock_irqsave(&tport->tp_lock, flags); | |
1454 | icount = &tport->tp_icount; | |
1455 | if (msr & TI_MSR_DELTA_CTS) | |
1456 | icount->cts++; | |
1457 | if (msr & TI_MSR_DELTA_DSR) | |
1458 | icount->dsr++; | |
1459 | if (msr & TI_MSR_DELTA_CD) | |
1460 | icount->dcd++; | |
1461 | if (msr & TI_MSR_DELTA_RI) | |
1462 | icount->rng++; | |
1463 | wake_up_interruptible(&tport->tp_msr_wait); | |
1464 | spin_unlock_irqrestore(&tport->tp_lock, flags); | |
1465 | } | |
1466 | ||
1467 | tport->tp_msr = msr & TI_MSR_MASK; | |
1468 | ||
1469 | /* handle CTS flow control */ | |
4a90f09b | 1470 | tty = tty_port_tty_get(&tport->tp_port->port); |
1da177e4 LT |
1471 | if (tty && C_CRTSCTS(tty)) { |
1472 | if (msr & TI_MSR_CTS) { | |
1473 | tty->hw_stopped = 0; | |
1474 | tty_wakeup(tty); | |
1475 | } else { | |
1476 | tty->hw_stopped = 1; | |
1477 | } | |
1478 | } | |
4a90f09b | 1479 | tty_kref_put(tty); |
1da177e4 LT |
1480 | } |
1481 | ||
1482 | ||
1483 | static void ti_drain(struct ti_port *tport, unsigned long timeout, int flush) | |
1484 | { | |
1485 | struct ti_device *tdev = tport->tp_tdev; | |
1486 | struct usb_serial_port *port = tport->tp_port; | |
1487 | wait_queue_t wait; | |
1da177e4 | 1488 | |
441b62c1 | 1489 | dbg("%s - port %d", __func__, port->number); |
1da177e4 | 1490 | |
0915f490 | 1491 | spin_lock_irq(&tport->tp_lock); |
1da177e4 LT |
1492 | |
1493 | /* wait for data to drain from the buffer */ | |
1494 | tdev->td_urb_error = 0; | |
1495 | init_waitqueue_entry(&wait, current); | |
1496 | add_wait_queue(&tport->tp_write_wait, &wait); | |
1497 | for (;;) { | |
1498 | set_current_state(TASK_INTERRUPTIBLE); | |
1499 | if (ti_buf_data_avail(tport->tp_write_buf) == 0 | |
1500 | || timeout == 0 || signal_pending(current) | |
1501 | || tdev->td_urb_error | |
0915f490 | 1502 | || port->serial->disconnected) /* disconnect */ |
1da177e4 | 1503 | break; |
0915f490 | 1504 | spin_unlock_irq(&tport->tp_lock); |
1da177e4 | 1505 | timeout = schedule_timeout(timeout); |
0915f490 | 1506 | spin_lock_irq(&tport->tp_lock); |
1da177e4 LT |
1507 | } |
1508 | set_current_state(TASK_RUNNING); | |
1509 | remove_wait_queue(&tport->tp_write_wait, &wait); | |
1510 | ||
1511 | /* flush any remaining data in the buffer */ | |
1512 | if (flush) | |
1513 | ti_buf_clear(tport->tp_write_buf); | |
1514 | ||
0915f490 | 1515 | spin_unlock_irq(&tport->tp_lock); |
1da177e4 | 1516 | |
0915f490 | 1517 | mutex_lock(&port->serial->disc_mutex); |
1da177e4 LT |
1518 | /* wait for data to drain from the device */ |
1519 | /* wait for empty tx register, plus 20 ms */ | |
1520 | timeout += jiffies; | |
1521 | tport->tp_lsr &= ~TI_LSR_TX_EMPTY; | |
1522 | while ((long)(jiffies - timeout) < 0 && !signal_pending(current) | |
1523 | && !(tport->tp_lsr&TI_LSR_TX_EMPTY) && !tdev->td_urb_error | |
0915f490 | 1524 | && !port->serial->disconnected) { |
1da177e4 LT |
1525 | if (ti_get_lsr(tport)) |
1526 | break; | |
0915f490 | 1527 | mutex_unlock(&port->serial->disc_mutex); |
1da177e4 | 1528 | msleep_interruptible(20); |
0915f490 | 1529 | mutex_lock(&port->serial->disc_mutex); |
1da177e4 | 1530 | } |
0915f490 | 1531 | mutex_unlock(&port->serial->disc_mutex); |
1da177e4 LT |
1532 | } |
1533 | ||
1534 | ||
1535 | static void ti_stop_read(struct ti_port *tport, struct tty_struct *tty) | |
1536 | { | |
1537 | unsigned long flags; | |
1538 | ||
1539 | spin_lock_irqsave(&tport->tp_lock, flags); | |
1540 | ||
1541 | if (tport->tp_read_urb_state == TI_READ_URB_RUNNING) | |
1542 | tport->tp_read_urb_state = TI_READ_URB_STOPPING; | |
1543 | ||
1544 | spin_unlock_irqrestore(&tport->tp_lock, flags); | |
1545 | } | |
1546 | ||
1547 | ||
1548 | static int ti_restart_read(struct ti_port *tport, struct tty_struct *tty) | |
1549 | { | |
1550 | struct urb *urb; | |
1551 | int status = 0; | |
1552 | unsigned long flags; | |
1553 | ||
1554 | spin_lock_irqsave(&tport->tp_lock, flags); | |
1555 | ||
1556 | if (tport->tp_read_urb_state == TI_READ_URB_STOPPED) { | |
944dc184 | 1557 | tport->tp_read_urb_state = TI_READ_URB_RUNNING; |
1da177e4 | 1558 | urb = tport->tp_port->read_urb; |
944dc184 | 1559 | spin_unlock_irqrestore(&tport->tp_lock, flags); |
1da177e4 LT |
1560 | urb->complete = ti_bulk_in_callback; |
1561 | urb->context = tport; | |
1562 | urb->dev = tport->tp_port->serial->dev; | |
1563 | status = usb_submit_urb(urb, GFP_KERNEL); | |
944dc184 ON |
1564 | } else { |
1565 | tport->tp_read_urb_state = TI_READ_URB_RUNNING; | |
1566 | spin_unlock_irqrestore(&tport->tp_lock, flags); | |
1da177e4 | 1567 | } |
1da177e4 LT |
1568 | |
1569 | return status; | |
1570 | } | |
1571 | ||
1572 | ||
1573 | static int ti_command_out_sync(struct ti_device *tdev, __u8 command, | |
1574 | __u16 moduleid, __u16 value, __u8 *data, int size) | |
1575 | { | |
1576 | int status; | |
1577 | ||
1578 | status = usb_control_msg(tdev->td_serial->dev, | |
1579 | usb_sndctrlpipe(tdev->td_serial->dev, 0), command, | |
1580 | (USB_TYPE_VENDOR | USB_RECIP_DEVICE | USB_DIR_OUT), | |
1581 | value, moduleid, data, size, 1000); | |
1582 | ||
1583 | if (status == size) | |
1584 | status = 0; | |
1585 | ||
1586 | if (status > 0) | |
1587 | status = -ECOMM; | |
1588 | ||
1589 | return status; | |
1590 | } | |
1591 | ||
1592 | ||
1593 | static int ti_command_in_sync(struct ti_device *tdev, __u8 command, | |
1594 | __u16 moduleid, __u16 value, __u8 *data, int size) | |
1595 | { | |
1596 | int status; | |
1597 | ||
1598 | status = usb_control_msg(tdev->td_serial->dev, | |
1599 | usb_rcvctrlpipe(tdev->td_serial->dev, 0), command, | |
1600 | (USB_TYPE_VENDOR | USB_RECIP_DEVICE | USB_DIR_IN), | |
1601 | value, moduleid, data, size, 1000); | |
1602 | ||
1603 | if (status == size) | |
1604 | status = 0; | |
1605 | ||
1606 | if (status > 0) | |
1607 | status = -ECOMM; | |
1608 | ||
1609 | return status; | |
1610 | } | |
1611 | ||
1612 | ||
1613 | static int ti_write_byte(struct ti_device *tdev, unsigned long addr, | |
1614 | __u8 mask, __u8 byte) | |
1615 | { | |
1616 | int status; | |
1617 | unsigned int size; | |
1618 | struct ti_write_data_bytes *data; | |
1619 | struct device *dev = &tdev->td_serial->dev->dev; | |
1620 | ||
a30fa793 AC |
1621 | dbg("%s - addr 0x%08lX, mask 0x%02X, byte 0x%02X", |
1622 | __func__, addr, mask, byte); | |
1da177e4 LT |
1623 | |
1624 | size = sizeof(struct ti_write_data_bytes) + 2; | |
1625 | data = kmalloc(size, GFP_KERNEL); | |
1626 | if (!data) { | |
441b62c1 | 1627 | dev_err(dev, "%s - out of memory\n", __func__); |
1da177e4 LT |
1628 | return -ENOMEM; |
1629 | } | |
1630 | ||
1631 | data->bAddrType = TI_RW_DATA_ADDR_XDATA; | |
1632 | data->bDataType = TI_RW_DATA_BYTE; | |
1633 | data->bDataCounter = 1; | |
1634 | data->wBaseAddrHi = cpu_to_be16(addr>>16); | |
1635 | data->wBaseAddrLo = cpu_to_be16(addr); | |
1636 | data->bData[0] = mask; | |
1637 | data->bData[1] = byte; | |
1638 | ||
1639 | status = ti_command_out_sync(tdev, TI_WRITE_DATA, TI_RAM_PORT, 0, | |
1640 | (__u8 *)data, size); | |
1641 | ||
1642 | if (status < 0) | |
441b62c1 | 1643 | dev_err(dev, "%s - failed, %d\n", __func__, status); |
1da177e4 LT |
1644 | |
1645 | kfree(data); | |
1646 | ||
1647 | return status; | |
1648 | } | |
1649 | ||
95da310e AC |
1650 | static int ti_do_download(struct usb_device *dev, int pipe, |
1651 | u8 *buffer, int size) | |
1da177e4 | 1652 | { |
1da177e4 | 1653 | int pos; |
95da310e | 1654 | u8 cs = 0; |
1da177e4 | 1655 | int done; |
1da177e4 | 1656 | struct ti_firmware_header *header; |
87ea8c88 | 1657 | int status = 0; |
95da310e | 1658 | int len; |
a30fa793 AC |
1659 | |
1660 | for (pos = sizeof(struct ti_firmware_header); pos < size; pos++) | |
1da177e4 LT |
1661 | cs = (__u8)(cs + buffer[pos]); |
1662 | ||
1663 | header = (struct ti_firmware_header *)buffer; | |
a30fa793 | 1664 | header->wLength = cpu_to_le16((__u16)(size |
95da310e | 1665 | - sizeof(struct ti_firmware_header))); |
1da177e4 LT |
1666 | header->bCheckSum = cs; |
1667 | ||
441b62c1 | 1668 | dbg("%s - downloading firmware", __func__); |
95da310e AC |
1669 | for (pos = 0; pos < size; pos += done) { |
1670 | len = min(size - pos, TI_DOWNLOAD_MAX_PACKET_SIZE); | |
1671 | status = usb_bulk_msg(dev, pipe, buffer + pos, len, | |
1672 | &done, 1000); | |
1da177e4 LT |
1673 | if (status) |
1674 | break; | |
1675 | } | |
95da310e AC |
1676 | return status; |
1677 | } | |
1da177e4 | 1678 | |
05a3d905 | 1679 | static int ti_download_firmware(struct ti_device *tdev) |
95da310e | 1680 | { |
05a3d905 | 1681 | int status; |
95da310e AC |
1682 | int buffer_size; |
1683 | __u8 *buffer; | |
1684 | struct usb_device *dev = tdev->td_serial->dev; | |
1685 | unsigned int pipe = usb_sndbulkpipe(dev, | |
1686 | tdev->td_serial->port[0]->bulk_out_endpointAddress); | |
1687 | const struct firmware *fw_p; | |
1688 | char buf[32]; | |
1da177e4 | 1689 | |
05a3d905 CA |
1690 | /* try ID specific firmware first, then try generic firmware */ |
1691 | sprintf(buf, "ti_usb-v%04x-p%04x.fw", dev->descriptor.idVendor, | |
1692 | dev->descriptor.idProduct); | |
1693 | if ((status = request_firmware(&fw_p, buf, &dev->dev)) != 0) { | |
cb7a7c6a CA |
1694 | buf[0] = '\0'; |
1695 | if (dev->descriptor.idVendor == MTS_VENDOR_ID) { | |
1696 | switch (dev->descriptor.idProduct) { | |
1697 | case MTS_CDMA_PRODUCT_ID: | |
1698 | strcpy(buf, "mts_cdma.fw"); | |
1699 | break; | |
1700 | case MTS_GSM_PRODUCT_ID: | |
1701 | strcpy(buf, "mts_gsm.fw"); | |
1702 | break; | |
1703 | case MTS_EDGE_PRODUCT_ID: | |
1704 | strcpy(buf, "mts_edge.fw"); | |
1705 | break; | |
1706 | } | |
1707 | } | |
1708 | if (buf[0] == '\0') { | |
1709 | if (tdev->td_is_3410) | |
1710 | strcpy(buf, "ti_3410.fw"); | |
1711 | else | |
1712 | strcpy(buf, "ti_5052.fw"); | |
1713 | } | |
05a3d905 CA |
1714 | status = request_firmware(&fw_p, buf, &dev->dev); |
1715 | } | |
1716 | if (status) { | |
95da310e AC |
1717 | dev_err(&dev->dev, "%s - firmware not found\n", __func__); |
1718 | return -ENOENT; | |
1719 | } | |
1720 | if (fw_p->size > TI_FIRMWARE_BUF_SIZE) { | |
1721 | dev_err(&dev->dev, "%s - firmware too large\n", __func__); | |
1722 | return -ENOENT; | |
1723 | } | |
1724 | ||
1725 | buffer_size = TI_FIRMWARE_BUF_SIZE + sizeof(struct ti_firmware_header); | |
1726 | buffer = kmalloc(buffer_size, GFP_KERNEL); | |
1727 | if (buffer) { | |
1728 | memcpy(buffer, fw_p->data, fw_p->size); | |
1729 | memset(buffer + fw_p->size, 0xff, buffer_size - fw_p->size); | |
2bcbe4c1 | 1730 | status = ti_do_download(dev, pipe, buffer, fw_p->size); |
95da310e | 1731 | kfree(buffer); |
05a3d905 CA |
1732 | } else { |
1733 | status = -ENOMEM; | |
95da310e AC |
1734 | } |
1735 | release_firmware(fw_p); | |
1da177e4 | 1736 | if (status) { |
a30fa793 AC |
1737 | dev_err(&dev->dev, "%s - error downloading firmware, %d\n", |
1738 | __func__, status); | |
1da177e4 LT |
1739 | return status; |
1740 | } | |
1741 | ||
441b62c1 | 1742 | dbg("%s - download successful", __func__); |
1da177e4 LT |
1743 | |
1744 | return 0; | |
1745 | } | |
1746 | ||
1747 | ||
1748 | /* Circular Buffer Functions */ | |
1749 | ||
1750 | /* | |
1751 | * ti_buf_alloc | |
1752 | * | |
1753 | * Allocate a circular buffer and all associated memory. | |
1754 | */ | |
1755 | ||
1756 | static struct circ_buf *ti_buf_alloc(void) | |
1757 | { | |
1758 | struct circ_buf *cb; | |
1759 | ||
5cbded58 | 1760 | cb = kmalloc(sizeof(struct circ_buf), GFP_KERNEL); |
1da177e4 LT |
1761 | if (cb == NULL) |
1762 | return NULL; | |
1763 | ||
1764 | cb->buf = kmalloc(TI_WRITE_BUF_SIZE, GFP_KERNEL); | |
1765 | if (cb->buf == NULL) { | |
1766 | kfree(cb); | |
1767 | return NULL; | |
1768 | } | |
1769 | ||
1770 | ti_buf_clear(cb); | |
1771 | ||
1772 | return cb; | |
1773 | } | |
1774 | ||
1775 | ||
1776 | /* | |
1777 | * ti_buf_free | |
1778 | * | |
1779 | * Free the buffer and all associated memory. | |
1780 | */ | |
1781 | ||
1782 | static void ti_buf_free(struct circ_buf *cb) | |
1783 | { | |
1784 | kfree(cb->buf); | |
1785 | kfree(cb); | |
1786 | } | |
1787 | ||
1788 | ||
1789 | /* | |
1790 | * ti_buf_clear | |
1791 | * | |
1792 | * Clear out all data in the circular buffer. | |
1793 | */ | |
1794 | ||
1795 | static void ti_buf_clear(struct circ_buf *cb) | |
1796 | { | |
1797 | cb->head = cb->tail = 0; | |
1798 | } | |
1799 | ||
1800 | ||
1801 | /* | |
1802 | * ti_buf_data_avail | |
1803 | * | |
1804 | * Return the number of bytes of data available in the circular | |
1805 | * buffer. | |
1806 | */ | |
1807 | ||
1808 | static int ti_buf_data_avail(struct circ_buf *cb) | |
1809 | { | |
a30fa793 | 1810 | return CIRC_CNT(cb->head, cb->tail, TI_WRITE_BUF_SIZE); |
1da177e4 LT |
1811 | } |
1812 | ||
1813 | ||
1814 | /* | |
1815 | * ti_buf_space_avail | |
1816 | * | |
1817 | * Return the number of bytes of space available in the circular | |
1818 | * buffer. | |
1819 | */ | |
1820 | ||
1821 | static int ti_buf_space_avail(struct circ_buf *cb) | |
1822 | { | |
a30fa793 | 1823 | return CIRC_SPACE(cb->head, cb->tail, TI_WRITE_BUF_SIZE); |
1da177e4 LT |
1824 | } |
1825 | ||
1826 | ||
1827 | /* | |
1828 | * ti_buf_put | |
1829 | * | |
1830 | * Copy data data from a user buffer and put it into the circular buffer. | |
1831 | * Restrict to the amount of space available. | |
1832 | * | |
1833 | * Return the number of bytes copied. | |
1834 | */ | |
1835 | ||
1836 | static int ti_buf_put(struct circ_buf *cb, const char *buf, int count) | |
1837 | { | |
1838 | int c, ret = 0; | |
1839 | ||
1840 | while (1) { | |
1841 | c = CIRC_SPACE_TO_END(cb->head, cb->tail, TI_WRITE_BUF_SIZE); | |
1842 | if (count < c) | |
1843 | c = count; | |
1844 | if (c <= 0) | |
1845 | break; | |
1846 | memcpy(cb->buf + cb->head, buf, c); | |
1847 | cb->head = (cb->head + c) & (TI_WRITE_BUF_SIZE-1); | |
1848 | buf += c; | |
1849 | count -= c; | |
1850 | ret += c; | |
1851 | } | |
1852 | ||
1853 | return ret; | |
1854 | } | |
1855 | ||
1856 | ||
1857 | /* | |
1858 | * ti_buf_get | |
1859 | * | |
1860 | * Get data from the circular buffer and copy to the given buffer. | |
1861 | * Restrict to the amount of data available. | |
1862 | * | |
1863 | * Return the number of bytes copied. | |
1864 | */ | |
1865 | ||
1866 | static int ti_buf_get(struct circ_buf *cb, char *buf, int count) | |
1867 | { | |
1868 | int c, ret = 0; | |
1869 | ||
1870 | while (1) { | |
1871 | c = CIRC_CNT_TO_END(cb->head, cb->tail, TI_WRITE_BUF_SIZE); | |
1872 | if (count < c) | |
1873 | c = count; | |
1874 | if (c <= 0) | |
1875 | break; | |
1876 | memcpy(buf, cb->buf + cb->tail, c); | |
1877 | cb->tail = (cb->tail + c) & (TI_WRITE_BUF_SIZE-1); | |
1878 | buf += c; | |
1879 | count -= c; | |
1880 | ret += c; | |
1881 | } | |
1882 | ||
1883 | return ret; | |
1884 | } |