?  search:
summary | log | graphiclog1 | graphiclog2 | commit | commitdiff | tree | refs | edit | fork
blame | history | raw | HEAD
pty: Repair TIOCGPTPEER
[cris-mirror.git] / drivers / usb / serial / ti_usb_3410_5052.c
blob8fc3854e5e6967dc32f1a04e5ba95a304f10b683
1 /*
2 * TI 3410/5052 USB Serial Driver
3 *
4 * Copyright (C) 2004 Texas Instruments
5 *
6 * This driver is based on the Linux io_ti driver, which is
7 * Copyright (C) 2000-2002 Inside Out Networks
8 * Copyright (C) 2001-2002 Greg Kroah-Hartman
9 *
10 * This program is free software; you can redistribute it and/or modify
11 * it under the terms of the GNU General Public License as published by
12 * the Free Software Foundation; either version 2 of the License, or
13 * (at your option) any later version.
14 *
15 * For questions or problems with this driver, contact Texas Instruments
16 * technical support, or Al Borchers <alborchers@steinerpoint.com>, or
17 * Peter Berger <pberger@brimson.com>.
18 */
19
20 #include <linux/kernel.h>
21 #include <linux/errno.h>
22 #include <linux/firmware.h>
23 #include <linux/slab.h>
24 #include <linux/tty.h>
25 #include <linux/tty_driver.h>
26 #include <linux/tty_flip.h>
27 #include <linux/module.h>
28 #include <linux/spinlock.h>
29 #include <linux/ioctl.h>
30 #include <linux/serial.h>
31 #include <linux/kfifo.h>
32 #include <linux/mutex.h>
33 #include <linux/uaccess.h>
34 #include <linux/usb.h>
35 #include <linux/usb/serial.h>
36
37 /* Configuration ids */
38 #define TI_BOOT_CONFIG 1
39 #define TI_ACTIVE_CONFIG 2
40
41 /* Vendor and product ids */
42 #define TI_VENDOR_ID 0x0451
43 #define IBM_VENDOR_ID 0x04b3
44 #define TI_3410_PRODUCT_ID 0x3410
45 #define IBM_4543_PRODUCT_ID 0x4543
46 #define IBM_454B_PRODUCT_ID 0x454b
47 #define IBM_454C_PRODUCT_ID 0x454c
48 #define TI_3410_EZ430_ID 0xF430 /* TI ez430 development tool */
49 #define TI_5052_BOOT_PRODUCT_ID 0x5052 /* no EEPROM, no firmware */
50 #define TI_5152_BOOT_PRODUCT_ID 0x5152 /* no EEPROM, no firmware */
51 #define TI_5052_EEPROM_PRODUCT_ID 0x505A /* EEPROM, no firmware */
52 #define TI_5052_FIRMWARE_PRODUCT_ID 0x505F /* firmware is running */
53 #define FRI2_PRODUCT_ID 0x5053 /* Fish River Island II */
54
55 /* Multi-Tech vendor and product ids */
56 #define MTS_VENDOR_ID 0x06E0
57 #define MTS_GSM_NO_FW_PRODUCT_ID 0xF108
58 #define MTS_CDMA_NO_FW_PRODUCT_ID 0xF109
59 #define MTS_CDMA_PRODUCT_ID 0xF110
60 #define MTS_GSM_PRODUCT_ID 0xF111
61 #define MTS_EDGE_PRODUCT_ID 0xF112
62 #define MTS_MT9234MU_PRODUCT_ID 0xF114
63 #define MTS_MT9234ZBA_PRODUCT_ID 0xF115
64 #define MTS_MT9234ZBAOLD_PRODUCT_ID 0x0319
65
66 /* Abbott Diabetics vendor and product ids */
67 #define ABBOTT_VENDOR_ID 0x1a61
68 #define ABBOTT_STEREO_PLUG_ID 0x3410
69 #define ABBOTT_PRODUCT_ID ABBOTT_STEREO_PLUG_ID
70 #define ABBOTT_STRIP_PORT_ID 0x3420
71
72 /* Honeywell vendor and product IDs */
73 #define HONEYWELL_VENDOR_ID 0x10ac
74 #define HONEYWELL_HGI80_PRODUCT_ID 0x0102 /* Honeywell HGI80 */
75
76 /* Moxa UPORT 11x0 vendor and product IDs */
77 #define MXU1_VENDOR_ID 0x110a
78 #define MXU1_1110_PRODUCT_ID 0x1110
79 #define MXU1_1130_PRODUCT_ID 0x1130
80 #define MXU1_1150_PRODUCT_ID 0x1150
81 #define MXU1_1151_PRODUCT_ID 0x1151
82 #define MXU1_1131_PRODUCT_ID 0x1131
83
84 /* Commands */
85 #define TI_GET_VERSION 0x01
86 #define TI_GET_PORT_STATUS 0x02
87 #define TI_GET_PORT_DEV_INFO 0x03
88 #define TI_GET_CONFIG 0x04
89 #define TI_SET_CONFIG 0x05
90 #define TI_OPEN_PORT 0x06
91 #define TI_CLOSE_PORT 0x07
92 #define TI_START_PORT 0x08
93 #define TI_STOP_PORT 0x09
94 #define TI_TEST_PORT 0x0A
95 #define TI_PURGE_PORT 0x0B
96 #define TI_RESET_EXT_DEVICE 0x0C
97 #define TI_WRITE_DATA 0x80
98 #define TI_READ_DATA 0x81
99 #define TI_REQ_TYPE_CLASS 0x82
100
101 /* Module identifiers */
102 #define TI_I2C_PORT 0x01
103 #define TI_IEEE1284_PORT 0x02
104 #define TI_UART1_PORT 0x03
105 #define TI_UART2_PORT 0x04
106 #define TI_RAM_PORT 0x05
107
108 /* Modem status */
109 #define TI_MSR_DELTA_CTS 0x01
110 #define TI_MSR_DELTA_DSR 0x02
111 #define TI_MSR_DELTA_RI 0x04
112 #define TI_MSR_DELTA_CD 0x08
113 #define TI_MSR_CTS 0x10
114 #define TI_MSR_DSR 0x20
115 #define TI_MSR_RI 0x40
116 #define TI_MSR_CD 0x80
117 #define TI_MSR_DELTA_MASK 0x0F
118 #define TI_MSR_MASK 0xF0
119
120 /* Line status */
121 #define TI_LSR_OVERRUN_ERROR 0x01
122 #define TI_LSR_PARITY_ERROR 0x02
123 #define TI_LSR_FRAMING_ERROR 0x04
124 #define TI_LSR_BREAK 0x08
125 #define TI_LSR_ERROR 0x0F
126 #define TI_LSR_RX_FULL 0x10
127 #define TI_LSR_TX_EMPTY 0x20
128
129 /* Line control */
130 #define TI_LCR_BREAK 0x40
131
132 /* Modem control */
133 #define TI_MCR_LOOP 0x04
134 #define TI_MCR_DTR 0x10
135 #define TI_MCR_RTS 0x20
136
137 /* Mask settings */
138 #define TI_UART_ENABLE_RTS_IN 0x0001
139 #define TI_UART_DISABLE_RTS 0x0002
140 #define TI_UART_ENABLE_PARITY_CHECKING 0x0008
141 #define TI_UART_ENABLE_DSR_OUT 0x0010
142 #define TI_UART_ENABLE_CTS_OUT 0x0020
143 #define TI_UART_ENABLE_X_OUT 0x0040
144 #define TI_UART_ENABLE_XA_OUT 0x0080
145 #define TI_UART_ENABLE_X_IN 0x0100
146 #define TI_UART_ENABLE_DTR_IN 0x0800
147 #define TI_UART_DISABLE_DTR 0x1000
148 #define TI_UART_ENABLE_MS_INTS 0x2000
149 #define TI_UART_ENABLE_AUTO_START_DMA 0x4000
150
151 /* Parity */
152 #define TI_UART_NO_PARITY 0x00
153 #define TI_UART_ODD_PARITY 0x01
154 #define TI_UART_EVEN_PARITY 0x02
155 #define TI_UART_MARK_PARITY 0x03
156 #define TI_UART_SPACE_PARITY 0x04
157
158 /* Stop bits */
159 #define TI_UART_1_STOP_BITS 0x00
160 #define TI_UART_1_5_STOP_BITS 0x01
161 #define TI_UART_2_STOP_BITS 0x02
162
163 /* Bits per character */
164 #define TI_UART_5_DATA_BITS 0x00
165 #define TI_UART_6_DATA_BITS 0x01
166 #define TI_UART_7_DATA_BITS 0x02
167 #define TI_UART_8_DATA_BITS 0x03
168
169 /* 232/485 modes */
170 #define TI_UART_232 0x00
171 #define TI_UART_485_RECEIVER_DISABLED 0x01
172 #define TI_UART_485_RECEIVER_ENABLED 0x02
173
174 /* Pipe transfer mode and timeout */
175 #define TI_PIPE_MODE_CONTINUOUS 0x01
176 #define TI_PIPE_MODE_MASK 0x03
177 #define TI_PIPE_TIMEOUT_MASK 0x7C
178 #define TI_PIPE_TIMEOUT_ENABLE 0x80
179
180 /* Config struct */
181 struct ti_uart_config {
182 __be16 wBaudRate;
183 __be16 wFlags;
184 u8 bDataBits;
185 u8 bParity;
186 u8 bStopBits;
187 char cXon;
188 char cXoff;
189 u8 bUartMode;
190 } __packed;
191
192 /* Get port status */
193 struct ti_port_status {
194 u8 bCmdCode;
195 u8 bModuleId;
196 u8 bErrorCode;
197 u8 bMSR;
198 u8 bLSR;
199 } __packed;
200
201 /* Purge modes */
202 #define TI_PURGE_OUTPUT 0x00
203 #define TI_PURGE_INPUT 0x80
204
205 /* Read/Write data */
206 #define TI_RW_DATA_ADDR_SFR 0x10
207 #define TI_RW_DATA_ADDR_IDATA 0x20
208 #define TI_RW_DATA_ADDR_XDATA 0x30
209 #define TI_RW_DATA_ADDR_CODE 0x40
210 #define TI_RW_DATA_ADDR_GPIO 0x50
211 #define TI_RW_DATA_ADDR_I2C 0x60
212 #define TI_RW_DATA_ADDR_FLASH 0x70
213 #define TI_RW_DATA_ADDR_DSP 0x80
214
215 #define TI_RW_DATA_UNSPECIFIED 0x00
216 #define TI_RW_DATA_BYTE 0x01
217 #define TI_RW_DATA_WORD 0x02
218 #define TI_RW_DATA_DOUBLE_WORD 0x04
219
220 struct ti_write_data_bytes {
221 u8 bAddrType;
222 u8 bDataType;
223 u8 bDataCounter;
224 __be16 wBaseAddrHi;
225 __be16 wBaseAddrLo;
226 u8 bData[0];
227 } __packed;
228
229 struct ti_read_data_request {
230 __u8 bAddrType;
231 __u8 bDataType;
232 __u8 bDataCounter;
233 __be16 wBaseAddrHi;
234 __be16 wBaseAddrLo;
235 } __packed;
236
237 struct ti_read_data_bytes {
238 __u8 bCmdCode;
239 __u8 bModuleId;
240 __u8 bErrorCode;
241 __u8 bData[0];
242 } __packed;
243
244 /* Interrupt struct */
245 struct ti_interrupt {
246 __u8 bICode;
247 __u8 bIInfo;
248 } __packed;
249
250 /* Interrupt codes */
251 #define TI_CODE_HARDWARE_ERROR 0xFF
252 #define TI_CODE_DATA_ERROR 0x03
253 #define TI_CODE_MODEM_STATUS 0x04
254
255 /* Download firmware max packet size */
256 #define TI_DOWNLOAD_MAX_PACKET_SIZE 64
257
258 /* Firmware image header */
259 struct ti_firmware_header {
260 __le16 wLength;
261 u8 bCheckSum;
262 } __packed;
263
264 /* UART addresses */
265 #define TI_UART1_BASE_ADDR 0xFFA0 /* UART 1 base address */
266 #define TI_UART2_BASE_ADDR 0xFFB0 /* UART 2 base address */
267 #define TI_UART_OFFSET_LCR 0x0002 /* UART MCR register offset */
268 #define TI_UART_OFFSET_MCR 0x0004 /* UART MCR register offset */
269
270 #define TI_DRIVER_AUTHOR "Al Borchers <alborchers@steinerpoint.com>"
271 #define TI_DRIVER_DESC "TI USB 3410/5052 Serial Driver"
272
273 #define TI_FIRMWARE_BUF_SIZE 16284
274
275 #define TI_TRANSFER_TIMEOUT 2
276
277 #define TI_DEFAULT_CLOSING_WAIT 4000 /* in .01 secs */
278
279 /* read urb states */
280 #define TI_READ_URB_RUNNING 0
281 #define TI_READ_URB_STOPPING 1
282 #define TI_READ_URB_STOPPED 2
283
284 #define TI_EXTRA_VID_PID_COUNT 5
285
286 struct ti_port {
287 int tp_is_open;
288 u8 tp_msr;
289 u8 tp_shadow_mcr;
290 u8 tp_uart_mode; /* 232 or 485 modes */
291 unsigned int tp_uart_base_addr;
292 struct ti_device *tp_tdev;
293 struct usb_serial_port *tp_port;
294 spinlock_t tp_lock;
295 int tp_read_urb_state;
296 int tp_write_urb_in_use;
297 };
298
299 struct ti_device {
300 struct mutex td_open_close_lock;
301 int td_open_port_count;
302 struct usb_serial *td_serial;
303 int td_is_3410;
304 bool td_rs485_only;
305 };
306
307 static int ti_startup(struct usb_serial *serial);
308 static void ti_release(struct usb_serial *serial);
309 static int ti_port_probe(struct usb_serial_port *port);
310 static int ti_port_remove(struct usb_serial_port *port);
311 static int ti_open(struct tty_struct *tty, struct usb_serial_port *port);
312 static void ti_close(struct usb_serial_port *port);
313 static int ti_write(struct tty_struct *tty, struct usb_serial_port *port,
314 const unsigned char *data, int count);
315 static int ti_write_room(struct tty_struct *tty);
316 static int ti_chars_in_buffer(struct tty_struct *tty);
317 static bool ti_tx_empty(struct usb_serial_port *port);
318 static void ti_throttle(struct tty_struct *tty);
319 static void ti_unthrottle(struct tty_struct *tty);
320 static int ti_ioctl(struct tty_struct *tty,
321 unsigned int cmd, unsigned long arg);
322 static void ti_set_termios(struct tty_struct *tty,
323 struct usb_serial_port *port, struct ktermios *old_termios);
324 static int ti_tiocmget(struct tty_struct *tty);
325 static int ti_tiocmset(struct tty_struct *tty,
326 unsigned int set, unsigned int clear);
327 static void ti_break(struct tty_struct *tty, int break_state);
328 static void ti_interrupt_callback(struct urb *urb);
329 static void ti_bulk_in_callback(struct urb *urb);
330 static void ti_bulk_out_callback(struct urb *urb);
331
332 static void ti_recv(struct usb_serial_port *port, unsigned char *data,
333 int length);
334 static void ti_send(struct ti_port *tport);
335 static int ti_set_mcr(struct ti_port *tport, unsigned int mcr);
336 static int ti_get_lsr(struct ti_port *tport, u8 *lsr);
337 static int ti_get_serial_info(struct ti_port *tport,
338 struct serial_struct __user *ret_arg);
339 static int ti_set_serial_info(struct tty_struct *tty, struct ti_port *tport,
340 struct serial_struct __user *new_arg);
341 static void ti_handle_new_msr(struct ti_port *tport, u8 msr);
342
343 static void ti_stop_read(struct ti_port *tport, struct tty_struct *tty);
344 static int ti_restart_read(struct ti_port *tport, struct tty_struct *tty);
345
346 static int ti_command_out_sync(struct ti_device *tdev, __u8 command,
347 __u16 moduleid, __u16 value, __u8 *data, int size);
348 static int ti_command_in_sync(struct ti_device *tdev, __u8 command,
349 __u16 moduleid, __u16 value, __u8 *data, int size);
350
351 static int ti_write_byte(struct usb_serial_port *port, struct ti_device *tdev,
352 unsigned long addr, u8 mask, u8 byte);
353
354 static int ti_download_firmware(struct ti_device *tdev);
355
356 static int closing_wait = TI_DEFAULT_CLOSING_WAIT;
357
358 static const struct usb_device_id ti_id_table_3410[] = {
359 { USB_DEVICE(TI_VENDOR_ID, TI_3410_PRODUCT_ID) },
360 { USB_DEVICE(TI_VENDOR_ID, TI_3410_EZ430_ID) },
361 { USB_DEVICE(MTS_VENDOR_ID, MTS_GSM_NO_FW_PRODUCT_ID) },
362 { USB_DEVICE(MTS_VENDOR_ID, MTS_CDMA_NO_FW_PRODUCT_ID) },
363 { USB_DEVICE(MTS_VENDOR_ID, MTS_CDMA_PRODUCT_ID) },
364 { USB_DEVICE(MTS_VENDOR_ID, MTS_GSM_PRODUCT_ID) },
365 { USB_DEVICE(MTS_VENDOR_ID, MTS_EDGE_PRODUCT_ID) },
366 { USB_DEVICE(MTS_VENDOR_ID, MTS_MT9234MU_PRODUCT_ID) },
367 { USB_DEVICE(MTS_VENDOR_ID, MTS_MT9234ZBA_PRODUCT_ID) },
368 { USB_DEVICE(MTS_VENDOR_ID, MTS_MT9234ZBAOLD_PRODUCT_ID) },
369 { USB_DEVICE(IBM_VENDOR_ID, IBM_4543_PRODUCT_ID) },
370 { USB_DEVICE(IBM_VENDOR_ID, IBM_454B_PRODUCT_ID) },
371 { USB_DEVICE(IBM_VENDOR_ID, IBM_454C_PRODUCT_ID) },
372 { USB_DEVICE(ABBOTT_VENDOR_ID, ABBOTT_STEREO_PLUG_ID) },
373 { USB_DEVICE(ABBOTT_VENDOR_ID, ABBOTT_STRIP_PORT_ID) },
374 { USB_DEVICE(TI_VENDOR_ID, FRI2_PRODUCT_ID) },
375 { USB_DEVICE(HONEYWELL_VENDOR_ID, HONEYWELL_HGI80_PRODUCT_ID) },
376 { USB_DEVICE(MXU1_VENDOR_ID, MXU1_1110_PRODUCT_ID) },
377 { USB_DEVICE(MXU1_VENDOR_ID, MXU1_1130_PRODUCT_ID) },
378 { USB_DEVICE(MXU1_VENDOR_ID, MXU1_1131_PRODUCT_ID) },
379 { USB_DEVICE(MXU1_VENDOR_ID, MXU1_1150_PRODUCT_ID) },
380 { USB_DEVICE(MXU1_VENDOR_ID, MXU1_1151_PRODUCT_ID) },
381 { } /* terminator */
382 };
383
384 static const struct usb_device_id ti_id_table_5052[] = {
385 { USB_DEVICE(TI_VENDOR_ID, TI_5052_BOOT_PRODUCT_ID) },
386 { USB_DEVICE(TI_VENDOR_ID, TI_5152_BOOT_PRODUCT_ID) },
387 { USB_DEVICE(TI_VENDOR_ID, TI_5052_EEPROM_PRODUCT_ID) },
388 { USB_DEVICE(TI_VENDOR_ID, TI_5052_FIRMWARE_PRODUCT_ID) },
389 { }
390 };
391
392 static const struct usb_device_id ti_id_table_combined[] = {
393 { USB_DEVICE(TI_VENDOR_ID, TI_3410_PRODUCT_ID) },
394 { USB_DEVICE(TI_VENDOR_ID, TI_3410_EZ430_ID) },
395 { USB_DEVICE(MTS_VENDOR_ID, MTS_GSM_NO_FW_PRODUCT_ID) },
396 { USB_DEVICE(MTS_VENDOR_ID, MTS_CDMA_NO_FW_PRODUCT_ID) },
397 { USB_DEVICE(MTS_VENDOR_ID, MTS_CDMA_PRODUCT_ID) },
398 { USB_DEVICE(MTS_VENDOR_ID, MTS_GSM_PRODUCT_ID) },
399 { USB_DEVICE(MTS_VENDOR_ID, MTS_EDGE_PRODUCT_ID) },
400 { USB_DEVICE(MTS_VENDOR_ID, MTS_MT9234MU_PRODUCT_ID) },
401 { USB_DEVICE(MTS_VENDOR_ID, MTS_MT9234ZBA_PRODUCT_ID) },
402 { USB_DEVICE(MTS_VENDOR_ID, MTS_MT9234ZBAOLD_PRODUCT_ID) },
403 { USB_DEVICE(TI_VENDOR_ID, TI_5052_BOOT_PRODUCT_ID) },
404 { USB_DEVICE(TI_VENDOR_ID, TI_5152_BOOT_PRODUCT_ID) },
405 { USB_DEVICE(TI_VENDOR_ID, TI_5052_EEPROM_PRODUCT_ID) },
406 { USB_DEVICE(TI_VENDOR_ID, TI_5052_FIRMWARE_PRODUCT_ID) },
407 { USB_DEVICE(IBM_VENDOR_ID, IBM_4543_PRODUCT_ID) },
408 { USB_DEVICE(IBM_VENDOR_ID, IBM_454B_PRODUCT_ID) },
409 { USB_DEVICE(IBM_VENDOR_ID, IBM_454C_PRODUCT_ID) },
410 { USB_DEVICE(ABBOTT_VENDOR_ID, ABBOTT_PRODUCT_ID) },
411 { USB_DEVICE(ABBOTT_VENDOR_ID, ABBOTT_STRIP_PORT_ID) },
412 { USB_DEVICE(TI_VENDOR_ID, FRI2_PRODUCT_ID) },
413 { USB_DEVICE(HONEYWELL_VENDOR_ID, HONEYWELL_HGI80_PRODUCT_ID) },
414 { USB_DEVICE(MXU1_VENDOR_ID, MXU1_1110_PRODUCT_ID) },
415 { USB_DEVICE(MXU1_VENDOR_ID, MXU1_1130_PRODUCT_ID) },
416 { USB_DEVICE(MXU1_VENDOR_ID, MXU1_1131_PRODUCT_ID) },
417 { USB_DEVICE(MXU1_VENDOR_ID, MXU1_1150_PRODUCT_ID) },
418 { USB_DEVICE(MXU1_VENDOR_ID, MXU1_1151_PRODUCT_ID) },
419 { } /* terminator */
420 };
421
422 static struct usb_serial_driver ti_1port_device = {
423 .driver = {
424 .owner = THIS_MODULE,
425 .name = "ti_usb_3410_5052_1",
426 },
427 .description = "TI USB 3410 1 port adapter",
428 .id_table = ti_id_table_3410,
429 .num_ports = 1,
430 .num_bulk_out = 1,
431 .attach = ti_startup,
432 .release = ti_release,
433 .port_probe = ti_port_probe,
434 .port_remove = ti_port_remove,
435 .open = ti_open,
436 .close = ti_close,
437 .write = ti_write,
438 .write_room = ti_write_room,
439 .chars_in_buffer = ti_chars_in_buffer,
440 .tx_empty = ti_tx_empty,
441 .throttle = ti_throttle,
442 .unthrottle = ti_unthrottle,
443 .ioctl = ti_ioctl,
444 .set_termios = ti_set_termios,
445 .tiocmget = ti_tiocmget,
446 .tiocmset = ti_tiocmset,
447 .tiocmiwait = usb_serial_generic_tiocmiwait,
448 .get_icount = usb_serial_generic_get_icount,
449 .break_ctl = ti_break,
450 .read_int_callback = ti_interrupt_callback,
451 .read_bulk_callback = ti_bulk_in_callback,
452 .write_bulk_callback = ti_bulk_out_callback,
453 };
454
455 static struct usb_serial_driver ti_2port_device = {
456 .driver = {
457 .owner = THIS_MODULE,
458 .name = "ti_usb_3410_5052_2",
459 },
460 .description = "TI USB 5052 2 port adapter",
461 .id_table = ti_id_table_5052,
462 .num_ports = 2,
463 .num_bulk_out = 1,
464 .attach = ti_startup,
465 .release = ti_release,
466 .port_probe = ti_port_probe,
467 .port_remove = ti_port_remove,
468 .open = ti_open,
469 .close = ti_close,
470 .write = ti_write,
471 .write_room = ti_write_room,
472 .chars_in_buffer = ti_chars_in_buffer,
473 .tx_empty = ti_tx_empty,
474 .throttle = ti_throttle,
475 .unthrottle = ti_unthrottle,
476 .ioctl = ti_ioctl,
477 .set_termios = ti_set_termios,
478 .tiocmget = ti_tiocmget,
479 .tiocmset = ti_tiocmset,
480 .tiocmiwait = usb_serial_generic_tiocmiwait,
481 .get_icount = usb_serial_generic_get_icount,
482 .break_ctl = ti_break,
483 .read_int_callback = ti_interrupt_callback,
484 .read_bulk_callback = ti_bulk_in_callback,
485 .write_bulk_callback = ti_bulk_out_callback,
486 };
487
488 static struct usb_serial_driver * const serial_drivers[] = {
489 &ti_1port_device, &ti_2port_device, NULL
490 };
491
492 MODULE_AUTHOR(TI_DRIVER_AUTHOR);
493 MODULE_DESCRIPTION(TI_DRIVER_DESC);
494 MODULE_LICENSE("GPL");
495
496 MODULE_FIRMWARE("ti_3410.fw");
497 MODULE_FIRMWARE("ti_5052.fw");
498 MODULE_FIRMWARE("mts_cdma.fw");
499 MODULE_FIRMWARE("mts_gsm.fw");
500 MODULE_FIRMWARE("mts_edge.fw");
501 MODULE_FIRMWARE("mts_mt9234mu.fw");
502 MODULE_FIRMWARE("mts_mt9234zba.fw");
503 MODULE_FIRMWARE("moxa/moxa-1110.fw");
504 MODULE_FIRMWARE("moxa/moxa-1130.fw");
505 MODULE_FIRMWARE("moxa/moxa-1131.fw");
506 MODULE_FIRMWARE("moxa/moxa-1150.fw");
507 MODULE_FIRMWARE("moxa/moxa-1151.fw");
508
509 module_param(closing_wait, int, S_IRUGO | S_IWUSR);
510 MODULE_PARM_DESC(closing_wait,
511 "Maximum wait for data to drain in close, in .01 secs, default is 4000");
512
513 MODULE_DEVICE_TABLE(usb, ti_id_table_combined);
514
515 module_usb_serial_driver(serial_drivers, ti_id_table_combined);
516
517 static int ti_startup(struct usb_serial *serial)
518 {
519 struct ti_device *tdev;
520 struct usb_device *dev = serial->dev;
521 struct usb_host_interface *cur_altsetting;
522 int num_endpoints;
523 u16 vid, pid;
524 int status;
525
526 dev_dbg(&dev->dev,
527 "%s - product 0x%4X, num configurations %d, configuration value %d\n",
528 __func__, le16_to_cpu(dev->descriptor.idProduct),
529 dev->descriptor.bNumConfigurations,
530 dev->actconfig->desc.bConfigurationValue);
531
532 tdev = kzalloc(sizeof(struct ti_device), GFP_KERNEL);
533 if (!tdev)
534 return -ENOMEM;
535
536 mutex_init(&tdev->td_open_close_lock);
537 tdev->td_serial = serial;
538 usb_set_serial_data(serial, tdev);
539
540 /* determine device type */
541 if (serial->type == &ti_1port_device)
542 tdev->td_is_3410 = 1;
543 dev_dbg(&dev->dev, "%s - device type is %s\n", __func__,
544 tdev->td_is_3410 ? "3410" : "5052");
545
546 vid = le16_to_cpu(dev->descriptor.idVendor);
547 pid = le16_to_cpu(dev->descriptor.idProduct);
548 if (vid == MXU1_VENDOR_ID) {
549 switch (pid) {
550 case MXU1_1130_PRODUCT_ID:
551 case MXU1_1131_PRODUCT_ID:
552 tdev->td_rs485_only = true;
553 break;
554 }
555 }
556
557 cur_altsetting = serial->interface->cur_altsetting;
558 num_endpoints = cur_altsetting->desc.bNumEndpoints;
559
560 /* if we have only 1 configuration and 1 endpoint, download firmware */
561 if (dev->descriptor.bNumConfigurations == 1 && num_endpoints == 1) {
562 status = ti_download_firmware(tdev);
563
564 if (status != 0)
565 goto free_tdev;
566
567 /* 3410 must be reset, 5052 resets itself */
568 if (tdev->td_is_3410) {
569 msleep_interruptible(100);
570 usb_reset_device(dev);
571 }
572
573 status = -ENODEV;
574 goto free_tdev;
575 }
576
577 /* the second configuration must be set */
578 if (dev->actconfig->desc.bConfigurationValue == TI_BOOT_CONFIG) {
579 status = usb_driver_set_configuration(dev, TI_ACTIVE_CONFIG);
580 status = status ? status : -ENODEV;
581 goto free_tdev;
582 }
583
584 if (serial->num_bulk_in < serial->num_ports ||
585 serial->num_bulk_out < serial->num_ports) {
586 dev_err(&serial->interface->dev, "missing endpoints\n");
587 status = -ENODEV;
588 goto free_tdev;
589 }
590
591 return 0;
592
593 free_tdev:
594 kfree(tdev);
595 usb_set_serial_data(serial, NULL);
596 return status;
597 }
598
599
600 static void ti_release(struct usb_serial *serial)
601 {
602 struct ti_device *tdev = usb_get_serial_data(serial);
603
604 kfree(tdev);
605 }
606
607 static int ti_port_probe(struct usb_serial_port *port)
608 {
609 struct ti_port *tport;
610
611 tport = kzalloc(sizeof(*tport), GFP_KERNEL);
612 if (!tport)
613 return -ENOMEM;
614
615 spin_lock_init(&tport->tp_lock);
616 if (port == port->serial->port[0])
617 tport->tp_uart_base_addr = TI_UART1_BASE_ADDR;
618 else
619 tport->tp_uart_base_addr = TI_UART2_BASE_ADDR;
620 port->port.closing_wait = msecs_to_jiffies(10 * closing_wait);
621 tport->tp_port = port;
622 tport->tp_tdev = usb_get_serial_data(port->serial);
623
624 if (tport->tp_tdev->td_rs485_only)
625 tport->tp_uart_mode = TI_UART_485_RECEIVER_DISABLED;
626 else
627 tport->tp_uart_mode = TI_UART_232;
628
629 usb_set_serial_port_data(port, tport);
630
631 port->port.drain_delay = 3;
632
633 return 0;
634 }
635
636 static int ti_port_remove(struct usb_serial_port *port)
637 {
638 struct ti_port *tport;
639
640 tport = usb_get_serial_port_data(port);
641 kfree(tport);
642
643 return 0;
644 }
645
646 static int ti_open(struct tty_struct *tty, struct usb_serial_port *port)
647 {
648 struct ti_port *tport = usb_get_serial_port_data(port);
649 struct ti_device *tdev;
650 struct usb_device *dev;
651 struct urb *urb;
652 int port_number;
653 int status;
654 u16 open_settings;
655
656 open_settings = (TI_PIPE_MODE_CONTINUOUS |
657 TI_PIPE_TIMEOUT_ENABLE |
658 (TI_TRANSFER_TIMEOUT << 2));
659
660 dev = port->serial->dev;
661 tdev = tport->tp_tdev;
662
663 /* only one open on any port on a device at a time */
664 if (mutex_lock_interruptible(&tdev->td_open_close_lock))
665 return -ERESTARTSYS;
666
667 port_number = port->port_number;
668
669 tport->tp_msr = 0;
670 tport->tp_shadow_mcr |= (TI_MCR_RTS | TI_MCR_DTR);
671
672 /* start interrupt urb the first time a port is opened on this device */
673 if (tdev->td_open_port_count == 0) {
674 dev_dbg(&port->dev, "%s - start interrupt in urb\n", __func__);
675 urb = tdev->td_serial->port[0]->interrupt_in_urb;
676 if (!urb) {
677 dev_err(&port->dev, "%s - no interrupt urb\n", __func__);
678 status = -EINVAL;
679 goto release_lock;
680 }
681 urb->context = tdev;
682 status = usb_submit_urb(urb, GFP_KERNEL);
683 if (status) {
684 dev_err(&port->dev, "%s - submit interrupt urb failed, %d\n", __func__, status);
685 goto release_lock;
686 }
687 }
688
689 if (tty)
690 ti_set_termios(tty, port, &tty->termios);
691
692 status = ti_command_out_sync(tdev, TI_OPEN_PORT,
693 (__u8)(TI_UART1_PORT + port_number), open_settings, NULL, 0);
694 if (status) {
695 dev_err(&port->dev, "%s - cannot send open command, %d\n",
696 __func__, status);
697 goto unlink_int_urb;
698 }
699
700 status = ti_command_out_sync(tdev, TI_START_PORT,
701 (__u8)(TI_UART1_PORT + port_number), 0, NULL, 0);
702 if (status) {
703 dev_err(&port->dev, "%s - cannot send start command, %d\n",
704 __func__, status);
705 goto unlink_int_urb;
706 }
707
708 status = ti_command_out_sync(tdev, TI_PURGE_PORT,
709 (__u8)(TI_UART1_PORT + port_number), TI_PURGE_INPUT, NULL, 0);
710 if (status) {
711 dev_err(&port->dev, "%s - cannot clear input buffers, %d\n",
712 __func__, status);
713 goto unlink_int_urb;
714 }
715 status = ti_command_out_sync(tdev, TI_PURGE_PORT,
716 (__u8)(TI_UART1_PORT + port_number), TI_PURGE_OUTPUT, NULL, 0);
717 if (status) {
718 dev_err(&port->dev, "%s - cannot clear output buffers, %d\n",
719 __func__, status);
720 goto unlink_int_urb;
721 }
722
723 /* reset the data toggle on the bulk endpoints to work around bug in
724 * host controllers where things get out of sync some times */
725 usb_clear_halt(dev, port->write_urb->pipe);
726 usb_clear_halt(dev, port->read_urb->pipe);
727
728 if (tty)
729 ti_set_termios(tty, port, &tty->termios);
730
731 status = ti_command_out_sync(tdev, TI_OPEN_PORT,
732 (__u8)(TI_UART1_PORT + port_number), open_settings, NULL, 0);
733 if (status) {
734 dev_err(&port->dev, "%s - cannot send open command (2), %d\n",
735 __func__, status);
736 goto unlink_int_urb;
737 }
738
739 status = ti_command_out_sync(tdev, TI_START_PORT,
740 (__u8)(TI_UART1_PORT + port_number), 0, NULL, 0);
741 if (status) {
742 dev_err(&port->dev, "%s - cannot send start command (2), %d\n",
743 __func__, status);
744 goto unlink_int_urb;
745 }
746
747 /* start read urb */
748 urb = port->read_urb;
749 if (!urb) {
750 dev_err(&port->dev, "%s - no read urb\n", __func__);
751 status = -EINVAL;
752 goto unlink_int_urb;
753 }
754 tport->tp_read_urb_state = TI_READ_URB_RUNNING;
755 urb->context = tport;
756 status = usb_submit_urb(urb, GFP_KERNEL);
757 if (status) {
758 dev_err(&port->dev, "%s - submit read urb failed, %d\n",
759 __func__, status);
760 goto unlink_int_urb;
761 }
762
763 tport->tp_is_open = 1;
764 ++tdev->td_open_port_count;
765
766 goto release_lock;
767
768 unlink_int_urb:
769 if (tdev->td_open_port_count == 0)
770 usb_kill_urb(port->serial->port[0]->interrupt_in_urb);
771 release_lock:
772 mutex_unlock(&tdev->td_open_close_lock);
773 return status;
774 }
775
776
777 static void ti_close(struct usb_serial_port *port)
778 {
779 struct ti_device *tdev;
780 struct ti_port *tport;
781 int port_number;
782 int status;
783 int do_unlock;
784 unsigned long flags;
785
786 tdev = usb_get_serial_data(port->serial);
787 tport = usb_get_serial_port_data(port);
788
789 tport->tp_is_open = 0;
790
791 usb_kill_urb(port->read_urb);
792 usb_kill_urb(port->write_urb);
793 tport->tp_write_urb_in_use = 0;
794 spin_lock_irqsave(&tport->tp_lock, flags);
795 kfifo_reset_out(&port->write_fifo);
796 spin_unlock_irqrestore(&tport->tp_lock, flags);
797
798 port_number = port->port_number;
799
800 status = ti_command_out_sync(tdev, TI_CLOSE_PORT,
801 (__u8)(TI_UART1_PORT + port_number), 0, NULL, 0);
802 if (status)
803 dev_err(&port->dev,
804 "%s - cannot send close port command, %d\n"
805 , __func__, status);
806
807 /* if mutex_lock is interrupted, continue anyway */
808 do_unlock = !mutex_lock_interruptible(&tdev->td_open_close_lock);
809 --tport->tp_tdev->td_open_port_count;
810 if (tport->tp_tdev->td_open_port_count <= 0) {
811 /* last port is closed, shut down interrupt urb */
812 usb_kill_urb(port->serial->port[0]->interrupt_in_urb);
813 tport->tp_tdev->td_open_port_count = 0;
814 }
815 if (do_unlock)
816 mutex_unlock(&tdev->td_open_close_lock);
817 }
818
819
820 static int ti_write(struct tty_struct *tty, struct usb_serial_port *port,
821 const unsigned char *data, int count)
822 {
823 struct ti_port *tport = usb_get_serial_port_data(port);
824
825 if (count == 0) {
826 return 0;
827 }
828
829 if (!tport->tp_is_open)
830 return -ENODEV;
831
832 count = kfifo_in_locked(&port->write_fifo, data, count,
833 &tport->tp_lock);
834 ti_send(tport);
835
836 return count;
837 }
838
839
840 static int ti_write_room(struct tty_struct *tty)
841 {
842 struct usb_serial_port *port = tty->driver_data;
843 struct ti_port *tport = usb_get_serial_port_data(port);
844 int room = 0;
845 unsigned long flags;
846
847 spin_lock_irqsave(&tport->tp_lock, flags);
848 room = kfifo_avail(&port->write_fifo);
849 spin_unlock_irqrestore(&tport->tp_lock, flags);
850
851 dev_dbg(&port->dev, "%s - returns %d\n", __func__, room);
852 return room;
853 }
854
855
856 static int ti_chars_in_buffer(struct tty_struct *tty)
857 {
858 struct usb_serial_port *port = tty->driver_data;
859 struct ti_port *tport = usb_get_serial_port_data(port);
860 int chars = 0;
861 unsigned long flags;
862
863 spin_lock_irqsave(&tport->tp_lock, flags);
864 chars = kfifo_len(&port->write_fifo);
865 spin_unlock_irqrestore(&tport->tp_lock, flags);
866
867 dev_dbg(&port->dev, "%s - returns %d\n", __func__, chars);
868 return chars;
869 }
870
871 static bool ti_tx_empty(struct usb_serial_port *port)
872 {
873 struct ti_port *tport = usb_get_serial_port_data(port);
874 int ret;
875 u8 lsr;
876
877 ret = ti_get_lsr(tport, &lsr);
878 if (!ret && !(lsr & TI_LSR_TX_EMPTY))
879 return false;
880
881 return true;
882 }
883
884 static void ti_throttle(struct tty_struct *tty)
885 {
886 struct usb_serial_port *port = tty->driver_data;
887 struct ti_port *tport = usb_get_serial_port_data(port);
888
889 if (I_IXOFF(tty) || C_CRTSCTS(tty))
890 ti_stop_read(tport, tty);
891
892 }
893
894
895 static void ti_unthrottle(struct tty_struct *tty)
896 {
897 struct usb_serial_port *port = tty->driver_data;
898 struct ti_port *tport = usb_get_serial_port_data(port);
899 int status;
900
901 if (I_IXOFF(tty) || C_CRTSCTS(tty)) {
902 status = ti_restart_read(tport, tty);
903 if (status)
904 dev_err(&port->dev, "%s - cannot restart read, %d\n",
905 __func__, status);
906 }
907 }
908
909 static int ti_ioctl(struct tty_struct *tty,
910 unsigned int cmd, unsigned long arg)
911 {
912 struct usb_serial_port *port = tty->driver_data;
913 struct ti_port *tport = usb_get_serial_port_data(port);
914
915 switch (cmd) {
916 case TIOCGSERIAL:
917 return ti_get_serial_info(tport,
918 (struct serial_struct __user *)arg);
919 case TIOCSSERIAL:
920 return ti_set_serial_info(tty, tport,
921 (struct serial_struct __user *)arg);
922 }
923 return -ENOIOCTLCMD;
924 }
925
926
927 static void ti_set_termios(struct tty_struct *tty,
928 struct usb_serial_port *port, struct ktermios *old_termios)
929 {
930 struct ti_port *tport = usb_get_serial_port_data(port);
931 struct ti_uart_config *config;
932 int baud;
933 int status;
934 int port_number = port->port_number;
935 unsigned int mcr;
936 u16 wbaudrate;
937 u16 wflags = 0;
938
939 config = kmalloc(sizeof(*config), GFP_KERNEL);
940 if (!config)
941 return;
942
943 /* these flags must be set */
944 wflags |= TI_UART_ENABLE_MS_INTS;
945 wflags |= TI_UART_ENABLE_AUTO_START_DMA;
946 config->bUartMode = tport->tp_uart_mode;
947
948 switch (C_CSIZE(tty)) {
949 case CS5:
950 config->bDataBits = TI_UART_5_DATA_BITS;
951 break;
952 case CS6:
953 config->bDataBits = TI_UART_6_DATA_BITS;
954 break;
955 case CS7:
956 config->bDataBits = TI_UART_7_DATA_BITS;
957 break;
958 default:
959 case CS8:
960 config->bDataBits = TI_UART_8_DATA_BITS;
961 break;
962 }
963
964 /* CMSPAR isn't supported by this driver */
965 tty->termios.c_cflag &= ~CMSPAR;
966
967 if (C_PARENB(tty)) {
968 if (C_PARODD(tty)) {
969 wflags |= TI_UART_ENABLE_PARITY_CHECKING;
970 config->bParity = TI_UART_ODD_PARITY;
971 } else {
972 wflags |= TI_UART_ENABLE_PARITY_CHECKING;
973 config->bParity = TI_UART_EVEN_PARITY;
974 }
975 } else {
976 wflags &= ~TI_UART_ENABLE_PARITY_CHECKING;
977 config->bParity = TI_UART_NO_PARITY;
978 }
979
980 if (C_CSTOPB(tty))
981 config->bStopBits = TI_UART_2_STOP_BITS;
982 else
983 config->bStopBits = TI_UART_1_STOP_BITS;
984
985 if (C_CRTSCTS(tty)) {
986 /* RTS flow control must be off to drop RTS for baud rate B0 */
987 if ((C_BAUD(tty)) != B0)
988 wflags |= TI_UART_ENABLE_RTS_IN;
989 wflags |= TI_UART_ENABLE_CTS_OUT;
990 } else {
991 ti_restart_read(tport, tty);
992 }
993
994 if (I_IXOFF(tty) || I_IXON(tty)) {
995 config->cXon = START_CHAR(tty);
996 config->cXoff = STOP_CHAR(tty);
997
998 if (I_IXOFF(tty))
999 wflags |= TI_UART_ENABLE_X_IN;
1000 else
1001 ti_restart_read(tport, tty);
1002
1003 if (I_IXON(tty))
1004 wflags |= TI_UART_ENABLE_X_OUT;
1005 }
1006
1007 baud = tty_get_baud_rate(tty);
1008 if (!baud)
1009 baud = 9600;
1010 if (tport->tp_tdev->td_is_3410)
1011 wbaudrate = (923077 + baud/2) / baud;
1012 else
1013 wbaudrate = (461538 + baud/2) / baud;
1014
1015 /* FIXME: Should calculate resulting baud here and report it back */
1016 if ((C_BAUD(tty)) != B0)
1017 tty_encode_baud_rate(tty, baud, baud);
1018
1019 dev_dbg(&port->dev,
1020 "%s - BaudRate=%d, wBaudRate=%d, wFlags=0x%04X, bDataBits=%d, bParity=%d, bStopBits=%d, cXon=%d, cXoff=%d, bUartMode=%d\n",
1021 __func__, baud, wbaudrate, wflags,
1022 config->bDataBits, config->bParity, config->bStopBits,
1023 config->cXon, config->cXoff, config->bUartMode);
1024
1025 config->wBaudRate = cpu_to_be16(wbaudrate);
1026 config->wFlags = cpu_to_be16(wflags);
1027
1028 status = ti_command_out_sync(tport->tp_tdev, TI_SET_CONFIG,
1029 (__u8)(TI_UART1_PORT + port_number), 0, (__u8 *)config,
1030 sizeof(*config));
1031 if (status)
1032 dev_err(&port->dev, "%s - cannot set config on port %d, %d\n",
1033 __func__, port_number, status);
1034
1035 /* SET_CONFIG asserts RTS and DTR, reset them correctly */
1036 mcr = tport->tp_shadow_mcr;
1037 /* if baud rate is B0, clear RTS and DTR */
1038 if (C_BAUD(tty) == B0)
1039 mcr &= ~(TI_MCR_DTR | TI_MCR_RTS);
1040 status = ti_set_mcr(tport, mcr);
1041 if (status)
1042 dev_err(&port->dev,
1043 "%s - cannot set modem control on port %d, %d\n",
1044 __func__, port_number, status);
1045
1046 kfree(config);
1047 }
1048
1049
1050 static int ti_tiocmget(struct tty_struct *tty)
1051 {
1052 struct usb_serial_port *port = tty->driver_data;
1053 struct ti_port *tport = usb_get_serial_port_data(port);
1054 unsigned int result;
1055 unsigned int msr;
1056 unsigned int mcr;
1057 unsigned long flags;
1058
1059 spin_lock_irqsave(&tport->tp_lock, flags);
1060 msr = tport->tp_msr;
1061 mcr = tport->tp_shadow_mcr;
1062 spin_unlock_irqrestore(&tport->tp_lock, flags);
1063
1064 result = ((mcr & TI_MCR_DTR) ? TIOCM_DTR : 0)
1065 | ((mcr & TI_MCR_RTS) ? TIOCM_RTS : 0)
1066 | ((mcr & TI_MCR_LOOP) ? TIOCM_LOOP : 0)
1067 | ((msr & TI_MSR_CTS) ? TIOCM_CTS : 0)
1068 | ((msr & TI_MSR_CD) ? TIOCM_CAR : 0)
1069 | ((msr & TI_MSR_RI) ? TIOCM_RI : 0)
1070 | ((msr & TI_MSR_DSR) ? TIOCM_DSR : 0);
1071
1072 dev_dbg(&port->dev, "%s - 0x%04X\n", __func__, result);
1073
1074 return result;
1075 }
1076
1077
1078 static int ti_tiocmset(struct tty_struct *tty,
1079 unsigned int set, unsigned int clear)
1080 {
1081 struct usb_serial_port *port = tty->driver_data;
1082 struct ti_port *tport = usb_get_serial_port_data(port);
1083 unsigned int mcr;
1084 unsigned long flags;
1085
1086 spin_lock_irqsave(&tport->tp_lock, flags);
1087 mcr = tport->tp_shadow_mcr;
1088
1089 if (set & TIOCM_RTS)
1090 mcr |= TI_MCR_RTS;
1091 if (set & TIOCM_DTR)
1092 mcr |= TI_MCR_DTR;
1093 if (set & TIOCM_LOOP)
1094 mcr |= TI_MCR_LOOP;
1095
1096 if (clear & TIOCM_RTS)
1097 mcr &= ~TI_MCR_RTS;
1098 if (clear & TIOCM_DTR)
1099 mcr &= ~TI_MCR_DTR;
1100 if (clear & TIOCM_LOOP)
1101 mcr &= ~TI_MCR_LOOP;
1102 spin_unlock_irqrestore(&tport->tp_lock, flags);
1103
1104 return ti_set_mcr(tport, mcr);
1105 }
1106
1107
1108 static void ti_break(struct tty_struct *tty, int break_state)
1109 {
1110 struct usb_serial_port *port = tty->driver_data;
1111 struct ti_port *tport = usb_get_serial_port_data(port);
1112 int status;
1113
1114 dev_dbg(&port->dev, "%s - state = %d\n", __func__, break_state);
1115
1116 status = ti_write_byte(port, tport->tp_tdev,
1117 tport->tp_uart_base_addr + TI_UART_OFFSET_LCR,
1118 TI_LCR_BREAK, break_state == -1 ? TI_LCR_BREAK : 0);
1119
1120 if (status)
1121 dev_dbg(&port->dev, "%s - error setting break, %d\n", __func__, status);
1122 }
1123
1124 static int ti_get_port_from_code(unsigned char code)
1125 {
1126 return (code >> 4) - 3;
1127 }
1128
1129 static int ti_get_func_from_code(unsigned char code)
1130 {
1131 return code & 0x0f;
1132 }
1133
1134 static void ti_interrupt_callback(struct urb *urb)
1135 {
1136 struct ti_device *tdev = urb->context;
1137 struct usb_serial_port *port;
1138 struct usb_serial *serial = tdev->td_serial;
1139 struct ti_port *tport;
1140 struct device *dev = &urb->dev->dev;
1141 unsigned char *data = urb->transfer_buffer;
1142 int length = urb->actual_length;
1143 int port_number;
1144 int function;
1145 int status = urb->status;
1146 int retval;
1147 u8 msr;
1148
1149 switch (status) {
1150 case 0:
1151 break;
1152 case -ECONNRESET:
1153 case -ENOENT:
1154 case -ESHUTDOWN:
1155 dev_dbg(dev, "%s - urb shutting down, %d\n", __func__, status);
1156 return;
1157 default:
1158 dev_err(dev, "%s - nonzero urb status, %d\n", __func__, status);
1159 goto exit;
1160 }
1161
1162 if (length != 2) {
1163 dev_dbg(dev, "%s - bad packet size, %d\n", __func__, length);
1164 goto exit;
1165 }
1166
1167 if (data[0] == TI_CODE_HARDWARE_ERROR) {
1168 dev_err(dev, "%s - hardware error, %d\n", __func__, data[1]);
1169 goto exit;
1170 }
1171
1172 port_number = ti_get_port_from_code(data[0]);
1173 function = ti_get_func_from_code(data[0]);
1174
1175 dev_dbg(dev, "%s - port_number %d, function %d, data 0x%02X\n",
1176 __func__, port_number, function, data[1]);
1177
1178 if (port_number >= serial->num_ports) {
1179 dev_err(dev, "%s - bad port number, %d\n",
1180 __func__, port_number);
1181 goto exit;
1182 }
1183
1184 port = serial->port[port_number];
1185
1186 tport = usb_get_serial_port_data(port);
1187 if (!tport)
1188 goto exit;
1189
1190 switch (function) {
1191 case TI_CODE_DATA_ERROR:
1192 dev_err(dev, "%s - DATA ERROR, port %d, data 0x%02X\n",
1193 __func__, port_number, data[1]);
1194 break;
1195
1196 case TI_CODE_MODEM_STATUS:
1197 msr = data[1];
1198 dev_dbg(dev, "%s - port %d, msr 0x%02X\n", __func__, port_number, msr);
1199 ti_handle_new_msr(tport, msr);
1200 break;
1201
1202 default:
1203 dev_err(dev, "%s - unknown interrupt code, 0x%02X\n",
1204 __func__, data[1]);
1205 break;
1206 }
1207
1208 exit:
1209 retval = usb_submit_urb(urb, GFP_ATOMIC);
1210 if (retval)
1211 dev_err(dev, "%s - resubmit interrupt urb failed, %d\n",
1212 __func__, retval);
1213 }
1214
1215
1216 static void ti_bulk_in_callback(struct urb *urb)
1217 {
1218 struct ti_port *tport = urb->context;
1219 struct usb_serial_port *port = tport->tp_port;
1220 struct device *dev = &urb->dev->dev;
1221 int status = urb->status;
1222 int retval = 0;
1223
1224 switch (status) {
1225 case 0:
1226 break;
1227 case -ECONNRESET:
1228 case -ENOENT:
1229 case -ESHUTDOWN:
1230 dev_dbg(dev, "%s - urb shutting down, %d\n", __func__, status);
1231 return;
1232 default:
1233 dev_err(dev, "%s - nonzero urb status, %d\n",
1234 __func__, status);
1235 }
1236
1237 if (status == -EPIPE)
1238 goto exit;
1239
1240 if (status) {
1241 dev_err(dev, "%s - stopping read!\n", __func__);
1242 return;
1243 }
1244
1245 if (urb->actual_length) {
1246 usb_serial_debug_data(dev, __func__, urb->actual_length,
1247 urb->transfer_buffer);
1248
1249 if (!tport->tp_is_open)
1250 dev_dbg(dev, "%s - port closed, dropping data\n",
1251 __func__);
1252 else
1253 ti_recv(port, urb->transfer_buffer, urb->actual_length);
1254 spin_lock(&tport->tp_lock);
1255 port->icount.rx += urb->actual_length;
1256 spin_unlock(&tport->tp_lock);
1257 }
1258
1259 exit:
1260 /* continue to read unless stopping */
1261 spin_lock(&tport->tp_lock);
1262 if (tport->tp_read_urb_state == TI_READ_URB_RUNNING)
1263 retval = usb_submit_urb(urb, GFP_ATOMIC);
1264 else if (tport->tp_read_urb_state == TI_READ_URB_STOPPING)
1265 tport->tp_read_urb_state = TI_READ_URB_STOPPED;
1266
1267 spin_unlock(&tport->tp_lock);
1268 if (retval)
1269 dev_err(dev, "%s - resubmit read urb failed, %d\n",
1270 __func__, retval);
1271 }
1272
1273
1274 static void ti_bulk_out_callback(struct urb *urb)
1275 {
1276 struct ti_port *tport = urb->context;
1277 struct usb_serial_port *port = tport->tp_port;
1278 int status = urb->status;
1279
1280 tport->tp_write_urb_in_use = 0;
1281
1282 switch (status) {
1283 case 0:
1284 break;
1285 case -ECONNRESET:
1286 case -ENOENT:
1287 case -ESHUTDOWN:
1288 dev_dbg(&port->dev, "%s - urb shutting down, %d\n", __func__, status);
1289 return;
1290 default:
1291 dev_err_console(port, "%s - nonzero urb status, %d\n",
1292 __func__, status);
1293 }
1294
1295 /* send any buffered data */
1296 ti_send(tport);
1297 }
1298
1299
1300 static void ti_recv(struct usb_serial_port *port, unsigned char *data,
1301 int length)
1302 {
1303 int cnt;
1304
1305 do {
1306 cnt = tty_insert_flip_string(&port->port, data, length);
1307 if (cnt < length) {
1308 dev_err(&port->dev, "%s - dropping data, %d bytes lost\n",
1309 __func__, length - cnt);
1310 if (cnt == 0)
1311 break;
1312 }
1313 tty_flip_buffer_push(&port->port);
1314 data += cnt;
1315 length -= cnt;
1316 } while (length > 0);
1317 }
1318
1319
1320 static void ti_send(struct ti_port *tport)
1321 {
1322 int count, result;
1323 struct usb_serial_port *port = tport->tp_port;
1324 unsigned long flags;
1325
1326 spin_lock_irqsave(&tport->tp_lock, flags);
1327
1328 if (tport->tp_write_urb_in_use)
1329 goto unlock;
1330
1331 count = kfifo_out(&port->write_fifo,
1332 port->write_urb->transfer_buffer,
1333 port->bulk_out_size);
1334
1335 if (count == 0)
1336 goto unlock;
1337
1338 tport->tp_write_urb_in_use = 1;
1339
1340 spin_unlock_irqrestore(&tport->tp_lock, flags);
1341
1342 usb_serial_debug_data(&port->dev, __func__, count,
1343 port->write_urb->transfer_buffer);
1344
1345 usb_fill_bulk_urb(port->write_urb, port->serial->dev,
1346 usb_sndbulkpipe(port->serial->dev,
1347 port->bulk_out_endpointAddress),
1348 port->write_urb->transfer_buffer, count,
1349 ti_bulk_out_callback, tport);
1350
1351 result = usb_submit_urb(port->write_urb, GFP_ATOMIC);
1352 if (result) {
1353 dev_err_console(port, "%s - submit write urb failed, %d\n",
1354 __func__, result);
1355 tport->tp_write_urb_in_use = 0;
1356 /* TODO: reschedule ti_send */
1357 } else {
1358 spin_lock_irqsave(&tport->tp_lock, flags);
1359 port->icount.tx += count;
1360 spin_unlock_irqrestore(&tport->tp_lock, flags);
1361 }
1362
1363 /* more room in the buffer for new writes, wakeup */
1364 tty_port_tty_wakeup(&port->port);
1365
1366 return;
1367 unlock:
1368 spin_unlock_irqrestore(&tport->tp_lock, flags);
1369 return;
1370 }
1371
1372
1373 static int ti_set_mcr(struct ti_port *tport, unsigned int mcr)
1374 {
1375 unsigned long flags;
1376 int status;
1377
1378 status = ti_write_byte(tport->tp_port, tport->tp_tdev,
1379 tport->tp_uart_base_addr + TI_UART_OFFSET_MCR,
1380 TI_MCR_RTS | TI_MCR_DTR | TI_MCR_LOOP, mcr);
1381
1382 spin_lock_irqsave(&tport->tp_lock, flags);
1383 if (!status)
1384 tport->tp_shadow_mcr = mcr;
1385 spin_unlock_irqrestore(&tport->tp_lock, flags);
1386
1387 return status;
1388 }
1389
1390
1391 static int ti_get_lsr(struct ti_port *tport, u8 *lsr)
1392 {
1393 int size, status;
1394 struct ti_device *tdev = tport->tp_tdev;
1395 struct usb_serial_port *port = tport->tp_port;
1396 int port_number = port->port_number;
1397 struct ti_port_status *data;
1398
1399 size = sizeof(struct ti_port_status);
1400 data = kmalloc(size, GFP_KERNEL);
1401 if (!data)
1402 return -ENOMEM;
1403
1404 status = ti_command_in_sync(tdev, TI_GET_PORT_STATUS,
1405 (__u8)(TI_UART1_PORT+port_number), 0, (__u8 *)data, size);
1406 if (status) {
1407 dev_err(&port->dev,
1408 "%s - get port status command failed, %d\n",
1409 __func__, status);
1410 goto free_data;
1411 }
1412
1413 dev_dbg(&port->dev, "%s - lsr 0x%02X\n", __func__, data->bLSR);
1414
1415 *lsr = data->bLSR;
1416
1417 free_data:
1418 kfree(data);
1419 return status;
1420 }
1421
1422
1423 static int ti_get_serial_info(struct ti_port *tport,
1424 struct serial_struct __user *ret_arg)
1425 {
1426 struct usb_serial_port *port = tport->tp_port;
1427 struct serial_struct ret_serial;
1428 unsigned cwait;
1429
1430 cwait = port->port.closing_wait;
1431 if (cwait != ASYNC_CLOSING_WAIT_NONE)
1432 cwait = jiffies_to_msecs(cwait) / 10;
1433
1434 memset(&ret_serial, 0, sizeof(ret_serial));
1435
1436 ret_serial.type = PORT_16550A;
1437 ret_serial.line = port->minor;
1438 ret_serial.port = port->port_number;
1439 ret_serial.xmit_fifo_size = kfifo_size(&port->write_fifo);
1440 ret_serial.baud_base = tport->tp_tdev->td_is_3410 ? 921600 : 460800;
1441 ret_serial.closing_wait = cwait;
1442
1443 if (copy_to_user(ret_arg, &ret_serial, sizeof(*ret_arg)))
1444 return -EFAULT;
1445
1446 return 0;
1447 }
1448
1449
1450 static int ti_set_serial_info(struct tty_struct *tty, struct ti_port *tport,
1451 struct serial_struct __user *new_arg)
1452 {
1453 struct serial_struct new_serial;
1454 unsigned cwait;
1455
1456 if (copy_from_user(&new_serial, new_arg, sizeof(new_serial)))
1457 return -EFAULT;
1458
1459 cwait = new_serial.closing_wait;
1460 if (cwait != ASYNC_CLOSING_WAIT_NONE)
1461 cwait = msecs_to_jiffies(10 * new_serial.closing_wait);
1462
1463 tport->tp_port->port.closing_wait = cwait;
1464
1465 return 0;
1466 }
1467
1468
1469 static void ti_handle_new_msr(struct ti_port *tport, u8 msr)
1470 {
1471 struct async_icount *icount;
1472 struct tty_struct *tty;
1473 unsigned long flags;
1474
1475 dev_dbg(&tport->tp_port->dev, "%s - msr 0x%02X\n", __func__, msr);
1476
1477 if (msr & TI_MSR_DELTA_MASK) {
1478 spin_lock_irqsave(&tport->tp_lock, flags);
1479 icount = &tport->tp_port->icount;
1480 if (msr & TI_MSR_DELTA_CTS)
1481 icount->cts++;
1482 if (msr & TI_MSR_DELTA_DSR)
1483 icount->dsr++;
1484 if (msr & TI_MSR_DELTA_CD)
1485 icount->dcd++;
1486 if (msr & TI_MSR_DELTA_RI)
1487 icount->rng++;
1488 wake_up_interruptible(&tport->tp_port->port.delta_msr_wait);
1489 spin_unlock_irqrestore(&tport->tp_lock, flags);
1490 }
1491
1492 tport->tp_msr = msr & TI_MSR_MASK;
1493
1494 /* handle CTS flow control */
1495 tty = tty_port_tty_get(&tport->tp_port->port);
1496 if (tty && C_CRTSCTS(tty)) {
1497 if (msr & TI_MSR_CTS)
1498 tty_wakeup(tty);
1499 }
1500 tty_kref_put(tty);
1501 }
1502
1503
1504 static void ti_stop_read(struct ti_port *tport, struct tty_struct *tty)
1505 {
1506 unsigned long flags;
1507
1508 spin_lock_irqsave(&tport->tp_lock, flags);
1509
1510 if (tport->tp_read_urb_state == TI_READ_URB_RUNNING)
1511 tport->tp_read_urb_state = TI_READ_URB_STOPPING;
1512
1513 spin_unlock_irqrestore(&tport->tp_lock, flags);
1514 }
1515
1516
1517 static int ti_restart_read(struct ti_port *tport, struct tty_struct *tty)
1518 {
1519 struct urb *urb;
1520 int status = 0;
1521 unsigned long flags;
1522
1523 spin_lock_irqsave(&tport->tp_lock, flags);
1524
1525 if (tport->tp_read_urb_state == TI_READ_URB_STOPPED) {
1526 tport->tp_read_urb_state = TI_READ_URB_RUNNING;
1527 urb = tport->tp_port->read_urb;
1528 spin_unlock_irqrestore(&tport->tp_lock, flags);
1529 urb->context = tport;
1530 status = usb_submit_urb(urb, GFP_KERNEL);
1531 } else {
1532 tport->tp_read_urb_state = TI_READ_URB_RUNNING;
1533 spin_unlock_irqrestore(&tport->tp_lock, flags);
1534 }
1535
1536 return status;
1537 }
1538
1539
1540 static int ti_command_out_sync(struct ti_device *tdev, __u8 command,
1541 __u16 moduleid, __u16 value, __u8 *data, int size)
1542 {
1543 int status;
1544
1545 status = usb_control_msg(tdev->td_serial->dev,
1546 usb_sndctrlpipe(tdev->td_serial->dev, 0), command,
1547 (USB_TYPE_VENDOR | USB_RECIP_DEVICE | USB_DIR_OUT),
1548 value, moduleid, data, size, 1000);
1549
1550 if (status < 0)
1551 return status;
1552
1553 return 0;
1554 }
1555
1556
1557 static int ti_command_in_sync(struct ti_device *tdev, __u8 command,
1558 __u16 moduleid, __u16 value, __u8 *data, int size)
1559 {
1560 int status;
1561
1562 status = usb_control_msg(tdev->td_serial->dev,
1563 usb_rcvctrlpipe(tdev->td_serial->dev, 0), command,
1564 (USB_TYPE_VENDOR | USB_RECIP_DEVICE | USB_DIR_IN),
1565 value, moduleid, data, size, 1000);
1566
1567 if (status == size)
1568 status = 0;
1569 else if (status >= 0)
1570 status = -ECOMM;
1571
1572 return status;
1573 }
1574
1575
1576 static int ti_write_byte(struct usb_serial_port *port,
1577 struct ti_device *tdev, unsigned long addr,
1578 u8 mask, u8 byte)
1579 {
1580 int status;
1581 unsigned int size;
1582 struct ti_write_data_bytes *data;
1583
1584 dev_dbg(&port->dev, "%s - addr 0x%08lX, mask 0x%02X, byte 0x%02X\n", __func__,
1585 addr, mask, byte);
1586
1587 size = sizeof(struct ti_write_data_bytes) + 2;
1588 data = kmalloc(size, GFP_KERNEL);
1589 if (!data)
1590 return -ENOMEM;
1591
1592 data->bAddrType = TI_RW_DATA_ADDR_XDATA;
1593 data->bDataType = TI_RW_DATA_BYTE;
1594 data->bDataCounter = 1;
1595 data->wBaseAddrHi = cpu_to_be16(addr>>16);
1596 data->wBaseAddrLo = cpu_to_be16(addr);
1597 data->bData[0] = mask;
1598 data->bData[1] = byte;
1599
1600 status = ti_command_out_sync(tdev, TI_WRITE_DATA, TI_RAM_PORT, 0,
1601 (__u8 *)data, size);
1602
1603 if (status < 0)
1604 dev_err(&port->dev, "%s - failed, %d\n", __func__, status);
1605
1606 kfree(data);
1607
1608 return status;
1609 }
1610
1611 static int ti_do_download(struct usb_device *dev, int pipe,
1612 u8 *buffer, int size)
1613 {
1614 int pos;
1615 u8 cs = 0;
1616 int done;
1617 struct ti_firmware_header *header;
1618 int status = 0;
1619 int len;
1620
1621 for (pos = sizeof(struct ti_firmware_header); pos < size; pos++)
1622 cs = (u8)(cs + buffer[pos]);
1623
1624 header = (struct ti_firmware_header *)buffer;
1625 header->wLength = cpu_to_le16(size - sizeof(*header));
1626 header->bCheckSum = cs;
1627
1628 dev_dbg(&dev->dev, "%s - downloading firmware\n", __func__);
1629 for (pos = 0; pos < size; pos += done) {
1630 len = min(size - pos, TI_DOWNLOAD_MAX_PACKET_SIZE);
1631 status = usb_bulk_msg(dev, pipe, buffer + pos, len,
1632 &done, 1000);
1633 if (status)
1634 break;
1635 }
1636 return status;
1637 }
1638
1639 static int ti_download_firmware(struct ti_device *tdev)
1640 {
1641 int status;
1642 int buffer_size;
1643 u8 *buffer;
1644 struct usb_device *dev = tdev->td_serial->dev;
1645 unsigned int pipe = usb_sndbulkpipe(dev,
1646 tdev->td_serial->port[0]->bulk_out_endpointAddress);
1647 const struct firmware *fw_p;
1648 char buf[32];
1649
1650 if (le16_to_cpu(dev->descriptor.idVendor) == MXU1_VENDOR_ID) {
1651 snprintf(buf,
1652 sizeof(buf),
1653 "moxa/moxa-%04x.fw",
1654 le16_to_cpu(dev->descriptor.idProduct));
1655
1656 status = request_firmware(&fw_p, buf, &dev->dev);
1657 goto check_firmware;
1658 }
1659
1660 /* try ID specific firmware first, then try generic firmware */
1661 sprintf(buf, "ti_usb-v%04x-p%04x.fw",
1662 le16_to_cpu(dev->descriptor.idVendor),
1663 le16_to_cpu(dev->descriptor.idProduct));
1664 status = request_firmware(&fw_p, buf, &dev->dev);
1665
1666 if (status != 0) {
1667 buf[0] = '\0';
1668 if (le16_to_cpu(dev->descriptor.idVendor) == MTS_VENDOR_ID) {
1669 switch (le16_to_cpu(dev->descriptor.idProduct)) {
1670 case MTS_CDMA_PRODUCT_ID:
1671 strcpy(buf, "mts_cdma.fw");
1672 break;
1673 case MTS_GSM_PRODUCT_ID:
1674 strcpy(buf, "mts_gsm.fw");
1675 break;
1676 case MTS_EDGE_PRODUCT_ID:
1677 strcpy(buf, "mts_edge.fw");
1678 break;
1679 case MTS_MT9234MU_PRODUCT_ID:
1680 strcpy(buf, "mts_mt9234mu.fw");
1681 break;
1682 case MTS_MT9234ZBA_PRODUCT_ID:
1683 strcpy(buf, "mts_mt9234zba.fw");
1684 break;
1685 case MTS_MT9234ZBAOLD_PRODUCT_ID:
1686 strcpy(buf, "mts_mt9234zba.fw");
1687 break; }
1688 }
1689 if (buf[0] == '\0') {
1690 if (tdev->td_is_3410)
1691 strcpy(buf, "ti_3410.fw");
1692 else
1693 strcpy(buf, "ti_5052.fw");
1694 }
1695 status = request_firmware(&fw_p, buf, &dev->dev);
1696 }
1697
1698 check_firmware:
1699 if (status) {
1700 dev_err(&dev->dev, "%s - firmware not found\n", __func__);
1701 return -ENOENT;
1702 }
1703 if (fw_p->size > TI_FIRMWARE_BUF_SIZE) {
1704 dev_err(&dev->dev, "%s - firmware too large %zu\n", __func__, fw_p->size);
1705 release_firmware(fw_p);
1706 return -ENOENT;
1707 }
1708
1709 buffer_size = TI_FIRMWARE_BUF_SIZE + sizeof(struct ti_firmware_header);
1710 buffer = kmalloc(buffer_size, GFP_KERNEL);
1711 if (buffer) {
1712 memcpy(buffer, fw_p->data, fw_p->size);
1713 memset(buffer + fw_p->size, 0xff, buffer_size - fw_p->size);
1714 status = ti_do_download(dev, pipe, buffer, fw_p->size);
1715 kfree(buffer);
1716 } else {
1717 status = -ENOMEM;
1718 }
1719 release_firmware(fw_p);
1720 if (status) {
1721 dev_err(&dev->dev, "%s - error downloading firmware, %d\n",
1722 __func__, status);
1723 return status;
1724 }
1725
1726 dev_dbg(&dev->dev, "%s - download successful\n", __func__);
1727
1728 return 0;
1729 }
CRIS linux kernel tree