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inet: frag: enforce memory limits earlier
[linux/fpc-iii.git] / drivers / usb / serial / ti_usb_3410_5052.c
blob6bcb874b483222c0749d3334bf9bd98f4f54f50f
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 .attach = ti_startup,
431 .release = ti_release,
432 .port_probe = ti_port_probe,
433 .port_remove = ti_port_remove,
434 .open = ti_open,
435 .close = ti_close,
436 .write = ti_write,
437 .write_room = ti_write_room,
438 .chars_in_buffer = ti_chars_in_buffer,
439 .tx_empty = ti_tx_empty,
440 .throttle = ti_throttle,
441 .unthrottle = ti_unthrottle,
442 .ioctl = ti_ioctl,
443 .set_termios = ti_set_termios,
444 .tiocmget = ti_tiocmget,
445 .tiocmset = ti_tiocmset,
446 .tiocmiwait = usb_serial_generic_tiocmiwait,
447 .get_icount = usb_serial_generic_get_icount,
448 .break_ctl = ti_break,
449 .read_int_callback = ti_interrupt_callback,
450 .read_bulk_callback = ti_bulk_in_callback,
451 .write_bulk_callback = ti_bulk_out_callback,
452 };
453
454 static struct usb_serial_driver ti_2port_device = {
455 .driver = {
456 .owner = THIS_MODULE,
457 .name = "ti_usb_3410_5052_2",
458 },
459 .description = "TI USB 5052 2 port adapter",
460 .id_table = ti_id_table_5052,
461 .num_ports = 2,
462 .attach = ti_startup,
463 .release = ti_release,
464 .port_probe = ti_port_probe,
465 .port_remove = ti_port_remove,
466 .open = ti_open,
467 .close = ti_close,
468 .write = ti_write,
469 .write_room = ti_write_room,
470 .chars_in_buffer = ti_chars_in_buffer,
471 .tx_empty = ti_tx_empty,
472 .throttle = ti_throttle,
473 .unthrottle = ti_unthrottle,
474 .ioctl = ti_ioctl,
475 .set_termios = ti_set_termios,
476 .tiocmget = ti_tiocmget,
477 .tiocmset = ti_tiocmset,
478 .tiocmiwait = usb_serial_generic_tiocmiwait,
479 .get_icount = usb_serial_generic_get_icount,
480 .break_ctl = ti_break,
481 .read_int_callback = ti_interrupt_callback,
482 .read_bulk_callback = ti_bulk_in_callback,
483 .write_bulk_callback = ti_bulk_out_callback,
484 };
485
486 static struct usb_serial_driver * const serial_drivers[] = {
487 &ti_1port_device, &ti_2port_device, NULL
488 };
489
490 MODULE_AUTHOR(TI_DRIVER_AUTHOR);
491 MODULE_DESCRIPTION(TI_DRIVER_DESC);
492 MODULE_LICENSE("GPL");
493
494 MODULE_FIRMWARE("ti_3410.fw");
495 MODULE_FIRMWARE("ti_5052.fw");
496 MODULE_FIRMWARE("mts_cdma.fw");
497 MODULE_FIRMWARE("mts_gsm.fw");
498 MODULE_FIRMWARE("mts_edge.fw");
499 MODULE_FIRMWARE("mts_mt9234mu.fw");
500 MODULE_FIRMWARE("mts_mt9234zba.fw");
501 MODULE_FIRMWARE("moxa/moxa-1110.fw");
502 MODULE_FIRMWARE("moxa/moxa-1130.fw");
503 MODULE_FIRMWARE("moxa/moxa-1131.fw");
504 MODULE_FIRMWARE("moxa/moxa-1150.fw");
505 MODULE_FIRMWARE("moxa/moxa-1151.fw");
506
507 module_param(closing_wait, int, S_IRUGO | S_IWUSR);
508 MODULE_PARM_DESC(closing_wait,
509 "Maximum wait for data to drain in close, in .01 secs, default is 4000");
510
511 MODULE_DEVICE_TABLE(usb, ti_id_table_combined);
512
513 module_usb_serial_driver(serial_drivers, ti_id_table_combined);
514
515 static int ti_startup(struct usb_serial *serial)
516 {
517 struct ti_device *tdev;
518 struct usb_device *dev = serial->dev;
519 struct usb_host_interface *cur_altsetting;
520 int num_endpoints;
521 u16 vid, pid;
522 int status;
523
524 dev_dbg(&dev->dev,
525 "%s - product 0x%4X, num configurations %d, configuration value %d\n",
526 __func__, le16_to_cpu(dev->descriptor.idProduct),
527 dev->descriptor.bNumConfigurations,
528 dev->actconfig->desc.bConfigurationValue);
529
530 tdev = kzalloc(sizeof(struct ti_device), GFP_KERNEL);
531 if (!tdev)
532 return -ENOMEM;
533
534 mutex_init(&tdev->td_open_close_lock);
535 tdev->td_serial = serial;
536 usb_set_serial_data(serial, tdev);
537
538 /* determine device type */
539 if (serial->type == &ti_1port_device)
540 tdev->td_is_3410 = 1;
541 dev_dbg(&dev->dev, "%s - device type is %s\n", __func__,
542 tdev->td_is_3410 ? "3410" : "5052");
543
544 vid = le16_to_cpu(dev->descriptor.idVendor);
545 pid = le16_to_cpu(dev->descriptor.idProduct);
546 if (vid == MXU1_VENDOR_ID) {
547 switch (pid) {
548 case MXU1_1130_PRODUCT_ID:
549 case MXU1_1131_PRODUCT_ID:
550 tdev->td_rs485_only = true;
551 break;
552 }
553 }
554
555 cur_altsetting = serial->interface->cur_altsetting;
556 num_endpoints = cur_altsetting->desc.bNumEndpoints;
557
558 /* if we have only 1 configuration and 1 endpoint, download firmware */
559 if (dev->descriptor.bNumConfigurations == 1 && num_endpoints == 1) {
560 status = ti_download_firmware(tdev);
561
562 if (status != 0)
563 goto free_tdev;
564
565 /* 3410 must be reset, 5052 resets itself */
566 if (tdev->td_is_3410) {
567 msleep_interruptible(100);
568 usb_reset_device(dev);
569 }
570
571 status = -ENODEV;
572 goto free_tdev;
573 }
574
575 /* the second configuration must be set */
576 if (dev->actconfig->desc.bConfigurationValue == TI_BOOT_CONFIG) {
577 status = usb_driver_set_configuration(dev, TI_ACTIVE_CONFIG);
578 status = status ? status : -ENODEV;
579 goto free_tdev;
580 }
581
582 if (serial->num_bulk_in < serial->num_ports ||
583 serial->num_bulk_out < serial->num_ports) {
584 dev_err(&serial->interface->dev, "missing endpoints\n");
585 status = -ENODEV;
586 goto free_tdev;
587 }
588
589 return 0;
590
591 free_tdev:
592 kfree(tdev);
593 usb_set_serial_data(serial, NULL);
594 return status;
595 }
596
597
598 static void ti_release(struct usb_serial *serial)
599 {
600 struct ti_device *tdev = usb_get_serial_data(serial);
601
602 kfree(tdev);
603 }
604
605 static int ti_port_probe(struct usb_serial_port *port)
606 {
607 struct ti_port *tport;
608
609 tport = kzalloc(sizeof(*tport), GFP_KERNEL);
610 if (!tport)
611 return -ENOMEM;
612
613 spin_lock_init(&tport->tp_lock);
614 if (port == port->serial->port[0])
615 tport->tp_uart_base_addr = TI_UART1_BASE_ADDR;
616 else
617 tport->tp_uart_base_addr = TI_UART2_BASE_ADDR;
618 port->port.closing_wait = msecs_to_jiffies(10 * closing_wait);
619 tport->tp_port = port;
620 tport->tp_tdev = usb_get_serial_data(port->serial);
621
622 if (tport->tp_tdev->td_rs485_only)
623 tport->tp_uart_mode = TI_UART_485_RECEIVER_DISABLED;
624 else
625 tport->tp_uart_mode = TI_UART_232;
626
627 usb_set_serial_port_data(port, tport);
628
629 port->port.drain_delay = 3;
630
631 return 0;
632 }
633
634 static int ti_port_remove(struct usb_serial_port *port)
635 {
636 struct ti_port *tport;
637
638 tport = usb_get_serial_port_data(port);
639 kfree(tport);
640
641 return 0;
642 }
643
644 static int ti_open(struct tty_struct *tty, struct usb_serial_port *port)
645 {
646 struct ti_port *tport = usb_get_serial_port_data(port);
647 struct ti_device *tdev;
648 struct usb_device *dev;
649 struct urb *urb;
650 int port_number;
651 int status;
652 u16 open_settings;
653
654 open_settings = (TI_PIPE_MODE_CONTINUOUS |
655 TI_PIPE_TIMEOUT_ENABLE |
656 (TI_TRANSFER_TIMEOUT << 2));
657
658 dev = port->serial->dev;
659 tdev = tport->tp_tdev;
660
661 /* only one open on any port on a device at a time */
662 if (mutex_lock_interruptible(&tdev->td_open_close_lock))
663 return -ERESTARTSYS;
664
665 port_number = port->port_number;
666
667 tport->tp_msr = 0;
668 tport->tp_shadow_mcr |= (TI_MCR_RTS | TI_MCR_DTR);
669
670 /* start interrupt urb the first time a port is opened on this device */
671 if (tdev->td_open_port_count == 0) {
672 dev_dbg(&port->dev, "%s - start interrupt in urb\n", __func__);
673 urb = tdev->td_serial->port[0]->interrupt_in_urb;
674 if (!urb) {
675 dev_err(&port->dev, "%s - no interrupt urb\n", __func__);
676 status = -EINVAL;
677 goto release_lock;
678 }
679 urb->context = tdev;
680 status = usb_submit_urb(urb, GFP_KERNEL);
681 if (status) {
682 dev_err(&port->dev, "%s - submit interrupt urb failed, %d\n", __func__, status);
683 goto release_lock;
684 }
685 }
686
687 if (tty)
688 ti_set_termios(tty, port, &tty->termios);
689
690 status = ti_command_out_sync(tdev, TI_OPEN_PORT,
691 (__u8)(TI_UART1_PORT + port_number), open_settings, NULL, 0);
692 if (status) {
693 dev_err(&port->dev, "%s - cannot send open command, %d\n",
694 __func__, status);
695 goto unlink_int_urb;
696 }
697
698 status = ti_command_out_sync(tdev, TI_START_PORT,
699 (__u8)(TI_UART1_PORT + port_number), 0, NULL, 0);
700 if (status) {
701 dev_err(&port->dev, "%s - cannot send start command, %d\n",
702 __func__, status);
703 goto unlink_int_urb;
704 }
705
706 status = ti_command_out_sync(tdev, TI_PURGE_PORT,
707 (__u8)(TI_UART1_PORT + port_number), TI_PURGE_INPUT, NULL, 0);
708 if (status) {
709 dev_err(&port->dev, "%s - cannot clear input buffers, %d\n",
710 __func__, status);
711 goto unlink_int_urb;
712 }
713 status = ti_command_out_sync(tdev, TI_PURGE_PORT,
714 (__u8)(TI_UART1_PORT + port_number), TI_PURGE_OUTPUT, NULL, 0);
715 if (status) {
716 dev_err(&port->dev, "%s - cannot clear output buffers, %d\n",
717 __func__, status);
718 goto unlink_int_urb;
719 }
720
721 /* reset the data toggle on the bulk endpoints to work around bug in
722 * host controllers where things get out of sync some times */
723 usb_clear_halt(dev, port->write_urb->pipe);
724 usb_clear_halt(dev, port->read_urb->pipe);
725
726 if (tty)
727 ti_set_termios(tty, port, &tty->termios);
728
729 status = ti_command_out_sync(tdev, TI_OPEN_PORT,
730 (__u8)(TI_UART1_PORT + port_number), open_settings, NULL, 0);
731 if (status) {
732 dev_err(&port->dev, "%s - cannot send open command (2), %d\n",
733 __func__, status);
734 goto unlink_int_urb;
735 }
736
737 status = ti_command_out_sync(tdev, TI_START_PORT,
738 (__u8)(TI_UART1_PORT + port_number), 0, NULL, 0);
739 if (status) {
740 dev_err(&port->dev, "%s - cannot send start command (2), %d\n",
741 __func__, status);
742 goto unlink_int_urb;
743 }
744
745 /* start read urb */
746 urb = port->read_urb;
747 if (!urb) {
748 dev_err(&port->dev, "%s - no read urb\n", __func__);
749 status = -EINVAL;
750 goto unlink_int_urb;
751 }
752 tport->tp_read_urb_state = TI_READ_URB_RUNNING;
753 urb->context = tport;
754 status = usb_submit_urb(urb, GFP_KERNEL);
755 if (status) {
756 dev_err(&port->dev, "%s - submit read urb failed, %d\n",
757 __func__, status);
758 goto unlink_int_urb;
759 }
760
761 tport->tp_is_open = 1;
762 ++tdev->td_open_port_count;
763
764 goto release_lock;
765
766 unlink_int_urb:
767 if (tdev->td_open_port_count == 0)
768 usb_kill_urb(port->serial->port[0]->interrupt_in_urb);
769 release_lock:
770 mutex_unlock(&tdev->td_open_close_lock);
771 return status;
772 }
773
774
775 static void ti_close(struct usb_serial_port *port)
776 {
777 struct ti_device *tdev;
778 struct ti_port *tport;
779 int port_number;
780 int status;
781 int do_unlock;
782 unsigned long flags;
783
784 tdev = usb_get_serial_data(port->serial);
785 tport = usb_get_serial_port_data(port);
786
787 tport->tp_is_open = 0;
788
789 usb_kill_urb(port->read_urb);
790 usb_kill_urb(port->write_urb);
791 tport->tp_write_urb_in_use = 0;
792 spin_lock_irqsave(&tport->tp_lock, flags);
793 kfifo_reset_out(&port->write_fifo);
794 spin_unlock_irqrestore(&tport->tp_lock, flags);
795
796 port_number = port->port_number;
797
798 status = ti_command_out_sync(tdev, TI_CLOSE_PORT,
799 (__u8)(TI_UART1_PORT + port_number), 0, NULL, 0);
800 if (status)
801 dev_err(&port->dev,
802 "%s - cannot send close port command, %d\n"
803 , __func__, status);
804
805 /* if mutex_lock is interrupted, continue anyway */
806 do_unlock = !mutex_lock_interruptible(&tdev->td_open_close_lock);
807 --tport->tp_tdev->td_open_port_count;
808 if (tport->tp_tdev->td_open_port_count <= 0) {
809 /* last port is closed, shut down interrupt urb */
810 usb_kill_urb(port->serial->port[0]->interrupt_in_urb);
811 tport->tp_tdev->td_open_port_count = 0;
812 }
813 if (do_unlock)
814 mutex_unlock(&tdev->td_open_close_lock);
815 }
816
817
818 static int ti_write(struct tty_struct *tty, struct usb_serial_port *port,
819 const unsigned char *data, int count)
820 {
821 struct ti_port *tport = usb_get_serial_port_data(port);
822
823 if (count == 0) {
824 return 0;
825 }
826
827 if (!tport->tp_is_open)
828 return -ENODEV;
829
830 count = kfifo_in_locked(&port->write_fifo, data, count,
831 &tport->tp_lock);
832 ti_send(tport);
833
834 return count;
835 }
836
837
838 static int ti_write_room(struct tty_struct *tty)
839 {
840 struct usb_serial_port *port = tty->driver_data;
841 struct ti_port *tport = usb_get_serial_port_data(port);
842 int room = 0;
843 unsigned long flags;
844
845 spin_lock_irqsave(&tport->tp_lock, flags);
846 room = kfifo_avail(&port->write_fifo);
847 spin_unlock_irqrestore(&tport->tp_lock, flags);
848
849 dev_dbg(&port->dev, "%s - returns %d\n", __func__, room);
850 return room;
851 }
852
853
854 static int ti_chars_in_buffer(struct tty_struct *tty)
855 {
856 struct usb_serial_port *port = tty->driver_data;
857 struct ti_port *tport = usb_get_serial_port_data(port);
858 int chars = 0;
859 unsigned long flags;
860
861 spin_lock_irqsave(&tport->tp_lock, flags);
862 chars = kfifo_len(&port->write_fifo);
863 spin_unlock_irqrestore(&tport->tp_lock, flags);
864
865 dev_dbg(&port->dev, "%s - returns %d\n", __func__, chars);
866 return chars;
867 }
868
869 static bool ti_tx_empty(struct usb_serial_port *port)
870 {
871 struct ti_port *tport = usb_get_serial_port_data(port);
872 int ret;
873 u8 lsr;
874
875 ret = ti_get_lsr(tport, &lsr);
876 if (!ret && !(lsr & TI_LSR_TX_EMPTY))
877 return false;
878
879 return true;
880 }
881
882 static void ti_throttle(struct tty_struct *tty)
883 {
884 struct usb_serial_port *port = tty->driver_data;
885 struct ti_port *tport = usb_get_serial_port_data(port);
886
887 if (I_IXOFF(tty) || C_CRTSCTS(tty))
888 ti_stop_read(tport, tty);
889
890 }
891
892
893 static void ti_unthrottle(struct tty_struct *tty)
894 {
895 struct usb_serial_port *port = tty->driver_data;
896 struct ti_port *tport = usb_get_serial_port_data(port);
897 int status;
898
899 if (I_IXOFF(tty) || C_CRTSCTS(tty)) {
900 status = ti_restart_read(tport, tty);
901 if (status)
902 dev_err(&port->dev, "%s - cannot restart read, %d\n",
903 __func__, status);
904 }
905 }
906
907 static int ti_ioctl(struct tty_struct *tty,
908 unsigned int cmd, unsigned long arg)
909 {
910 struct usb_serial_port *port = tty->driver_data;
911 struct ti_port *tport = usb_get_serial_port_data(port);
912
913 switch (cmd) {
914 case TIOCGSERIAL:
915 return ti_get_serial_info(tport,
916 (struct serial_struct __user *)arg);
917 case TIOCSSERIAL:
918 return ti_set_serial_info(tty, tport,
919 (struct serial_struct __user *)arg);
920 }
921 return -ENOIOCTLCMD;
922 }
923
924
925 static void ti_set_termios(struct tty_struct *tty,
926 struct usb_serial_port *port, struct ktermios *old_termios)
927 {
928 struct ti_port *tport = usb_get_serial_port_data(port);
929 struct ti_uart_config *config;
930 tcflag_t cflag, iflag;
931 int baud;
932 int status;
933 int port_number = port->port_number;
934 unsigned int mcr;
935 u16 wbaudrate;
936 u16 wflags = 0;
937
938 cflag = tty->termios.c_cflag;
939 iflag = tty->termios.c_iflag;
940
941 dev_dbg(&port->dev, "%s - cflag %08x, iflag %08x\n", __func__, cflag, iflag);
942 dev_dbg(&port->dev, "%s - old clfag %08x, old iflag %08x\n", __func__,
943 old_termios->c_cflag, old_termios->c_iflag);
944
945 config = kmalloc(sizeof(*config), GFP_KERNEL);
946 if (!config)
947 return;
948
949 /* these flags must be set */
950 wflags |= TI_UART_ENABLE_MS_INTS;
951 wflags |= TI_UART_ENABLE_AUTO_START_DMA;
952 config->bUartMode = tport->tp_uart_mode;
953
954 switch (C_CSIZE(tty)) {
955 case CS5:
956 config->bDataBits = TI_UART_5_DATA_BITS;
957 break;
958 case CS6:
959 config->bDataBits = TI_UART_6_DATA_BITS;
960 break;
961 case CS7:
962 config->bDataBits = TI_UART_7_DATA_BITS;
963 break;
964 default:
965 case CS8:
966 config->bDataBits = TI_UART_8_DATA_BITS;
967 break;
968 }
969
970 /* CMSPAR isn't supported by this driver */
971 tty->termios.c_cflag &= ~CMSPAR;
972
973 if (C_PARENB(tty)) {
974 if (C_PARODD(tty)) {
975 wflags |= TI_UART_ENABLE_PARITY_CHECKING;
976 config->bParity = TI_UART_ODD_PARITY;
977 } else {
978 wflags |= TI_UART_ENABLE_PARITY_CHECKING;
979 config->bParity = TI_UART_EVEN_PARITY;
980 }
981 } else {
982 wflags &= ~TI_UART_ENABLE_PARITY_CHECKING;
983 config->bParity = TI_UART_NO_PARITY;
984 }
985
986 if (C_CSTOPB(tty))
987 config->bStopBits = TI_UART_2_STOP_BITS;
988 else
989 config->bStopBits = TI_UART_1_STOP_BITS;
990
991 if (C_CRTSCTS(tty)) {
992 /* RTS flow control must be off to drop RTS for baud rate B0 */
993 if ((C_BAUD(tty)) != B0)
994 wflags |= TI_UART_ENABLE_RTS_IN;
995 wflags |= TI_UART_ENABLE_CTS_OUT;
996 } else {
997 ti_restart_read(tport, tty);
998 }
999
1000 if (I_IXOFF(tty) || I_IXON(tty)) {
1001 config->cXon = START_CHAR(tty);
1002 config->cXoff = STOP_CHAR(tty);
1003
1004 if (I_IXOFF(tty))
1005 wflags |= TI_UART_ENABLE_X_IN;
1006 else
1007 ti_restart_read(tport, tty);
1008
1009 if (I_IXON(tty))
1010 wflags |= TI_UART_ENABLE_X_OUT;
1011 }
1012
1013 baud = tty_get_baud_rate(tty);
1014 if (!baud)
1015 baud = 9600;
1016 if (tport->tp_tdev->td_is_3410)
1017 wbaudrate = (923077 + baud/2) / baud;
1018 else
1019 wbaudrate = (461538 + baud/2) / baud;
1020
1021 /* FIXME: Should calculate resulting baud here and report it back */
1022 if ((C_BAUD(tty)) != B0)
1023 tty_encode_baud_rate(tty, baud, baud);
1024
1025 dev_dbg(&port->dev,
1026 "%s - BaudRate=%d, wBaudRate=%d, wFlags=0x%04X, bDataBits=%d, bParity=%d, bStopBits=%d, cXon=%d, cXoff=%d, bUartMode=%d\n",
1027 __func__, baud, wbaudrate, wflags,
1028 config->bDataBits, config->bParity, config->bStopBits,
1029 config->cXon, config->cXoff, config->bUartMode);
1030
1031 config->wBaudRate = cpu_to_be16(wbaudrate);
1032 config->wFlags = cpu_to_be16(wflags);
1033
1034 status = ti_command_out_sync(tport->tp_tdev, TI_SET_CONFIG,
1035 (__u8)(TI_UART1_PORT + port_number), 0, (__u8 *)config,
1036 sizeof(*config));
1037 if (status)
1038 dev_err(&port->dev, "%s - cannot set config on port %d, %d\n",
1039 __func__, port_number, status);
1040
1041 /* SET_CONFIG asserts RTS and DTR, reset them correctly */
1042 mcr = tport->tp_shadow_mcr;
1043 /* if baud rate is B0, clear RTS and DTR */
1044 if (C_BAUD(tty) == B0)
1045 mcr &= ~(TI_MCR_DTR | TI_MCR_RTS);
1046 status = ti_set_mcr(tport, mcr);
1047 if (status)
1048 dev_err(&port->dev,
1049 "%s - cannot set modem control on port %d, %d\n",
1050 __func__, port_number, status);
1051
1052 kfree(config);
1053 }
1054
1055
1056 static int ti_tiocmget(struct tty_struct *tty)
1057 {
1058 struct usb_serial_port *port = tty->driver_data;
1059 struct ti_port *tport = usb_get_serial_port_data(port);
1060 unsigned int result;
1061 unsigned int msr;
1062 unsigned int mcr;
1063 unsigned long flags;
1064
1065 spin_lock_irqsave(&tport->tp_lock, flags);
1066 msr = tport->tp_msr;
1067 mcr = tport->tp_shadow_mcr;
1068 spin_unlock_irqrestore(&tport->tp_lock, flags);
1069
1070 result = ((mcr & TI_MCR_DTR) ? TIOCM_DTR : 0)
1071 | ((mcr & TI_MCR_RTS) ? TIOCM_RTS : 0)
1072 | ((mcr & TI_MCR_LOOP) ? TIOCM_LOOP : 0)
1073 | ((msr & TI_MSR_CTS) ? TIOCM_CTS : 0)
1074 | ((msr & TI_MSR_CD) ? TIOCM_CAR : 0)
1075 | ((msr & TI_MSR_RI) ? TIOCM_RI : 0)
1076 | ((msr & TI_MSR_DSR) ? TIOCM_DSR : 0);
1077
1078 dev_dbg(&port->dev, "%s - 0x%04X\n", __func__, result);
1079
1080 return result;
1081 }
1082
1083
1084 static int ti_tiocmset(struct tty_struct *tty,
1085 unsigned int set, unsigned int clear)
1086 {
1087 struct usb_serial_port *port = tty->driver_data;
1088 struct ti_port *tport = usb_get_serial_port_data(port);
1089 unsigned int mcr;
1090 unsigned long flags;
1091
1092 spin_lock_irqsave(&tport->tp_lock, flags);
1093 mcr = tport->tp_shadow_mcr;
1094
1095 if (set & TIOCM_RTS)
1096 mcr |= TI_MCR_RTS;
1097 if (set & TIOCM_DTR)
1098 mcr |= TI_MCR_DTR;
1099 if (set & TIOCM_LOOP)
1100 mcr |= TI_MCR_LOOP;
1101
1102 if (clear & TIOCM_RTS)
1103 mcr &= ~TI_MCR_RTS;
1104 if (clear & TIOCM_DTR)
1105 mcr &= ~TI_MCR_DTR;
1106 if (clear & TIOCM_LOOP)
1107 mcr &= ~TI_MCR_LOOP;
1108 spin_unlock_irqrestore(&tport->tp_lock, flags);
1109
1110 return ti_set_mcr(tport, mcr);
1111 }
1112
1113
1114 static void ti_break(struct tty_struct *tty, int break_state)
1115 {
1116 struct usb_serial_port *port = tty->driver_data;
1117 struct ti_port *tport = usb_get_serial_port_data(port);
1118 int status;
1119
1120 dev_dbg(&port->dev, "%s - state = %d\n", __func__, break_state);
1121
1122 status = ti_write_byte(port, tport->tp_tdev,
1123 tport->tp_uart_base_addr + TI_UART_OFFSET_LCR,
1124 TI_LCR_BREAK, break_state == -1 ? TI_LCR_BREAK : 0);
1125
1126 if (status)
1127 dev_dbg(&port->dev, "%s - error setting break, %d\n", __func__, status);
1128 }
1129
1130 static int ti_get_port_from_code(unsigned char code)
1131 {
1132 return (code >> 4) - 3;
1133 }
1134
1135 static int ti_get_func_from_code(unsigned char code)
1136 {
1137 return code & 0x0f;
1138 }
1139
1140 static void ti_interrupt_callback(struct urb *urb)
1141 {
1142 struct ti_device *tdev = urb->context;
1143 struct usb_serial_port *port;
1144 struct usb_serial *serial = tdev->td_serial;
1145 struct ti_port *tport;
1146 struct device *dev = &urb->dev->dev;
1147 unsigned char *data = urb->transfer_buffer;
1148 int length = urb->actual_length;
1149 int port_number;
1150 int function;
1151 int status = urb->status;
1152 int retval;
1153 u8 msr;
1154
1155 switch (status) {
1156 case 0:
1157 break;
1158 case -ECONNRESET:
1159 case -ENOENT:
1160 case -ESHUTDOWN:
1161 dev_dbg(dev, "%s - urb shutting down, %d\n", __func__, status);
1162 return;
1163 default:
1164 dev_err(dev, "%s - nonzero urb status, %d\n", __func__, status);
1165 goto exit;
1166 }
1167
1168 if (length != 2) {
1169 dev_dbg(dev, "%s - bad packet size, %d\n", __func__, length);
1170 goto exit;
1171 }
1172
1173 if (data[0] == TI_CODE_HARDWARE_ERROR) {
1174 dev_err(dev, "%s - hardware error, %d\n", __func__, data[1]);
1175 goto exit;
1176 }
1177
1178 port_number = ti_get_port_from_code(data[0]);
1179 function = ti_get_func_from_code(data[0]);
1180
1181 dev_dbg(dev, "%s - port_number %d, function %d, data 0x%02X\n",
1182 __func__, port_number, function, data[1]);
1183
1184 if (port_number >= serial->num_ports) {
1185 dev_err(dev, "%s - bad port number, %d\n",
1186 __func__, port_number);
1187 goto exit;
1188 }
1189
1190 port = serial->port[port_number];
1191
1192 tport = usb_get_serial_port_data(port);
1193 if (!tport)
1194 goto exit;
1195
1196 switch (function) {
1197 case TI_CODE_DATA_ERROR:
1198 dev_err(dev, "%s - DATA ERROR, port %d, data 0x%02X\n",
1199 __func__, port_number, data[1]);
1200 break;
1201
1202 case TI_CODE_MODEM_STATUS:
1203 msr = data[1];
1204 dev_dbg(dev, "%s - port %d, msr 0x%02X\n", __func__, port_number, msr);
1205 ti_handle_new_msr(tport, msr);
1206 break;
1207
1208 default:
1209 dev_err(dev, "%s - unknown interrupt code, 0x%02X\n",
1210 __func__, data[1]);
1211 break;
1212 }
1213
1214 exit:
1215 retval = usb_submit_urb(urb, GFP_ATOMIC);
1216 if (retval)
1217 dev_err(dev, "%s - resubmit interrupt urb failed, %d\n",
1218 __func__, retval);
1219 }
1220
1221
1222 static void ti_bulk_in_callback(struct urb *urb)
1223 {
1224 struct ti_port *tport = urb->context;
1225 struct usb_serial_port *port = tport->tp_port;
1226 struct device *dev = &urb->dev->dev;
1227 int status = urb->status;
1228 int retval = 0;
1229
1230 switch (status) {
1231 case 0:
1232 break;
1233 case -ECONNRESET:
1234 case -ENOENT:
1235 case -ESHUTDOWN:
1236 dev_dbg(dev, "%s - urb shutting down, %d\n", __func__, status);
1237 return;
1238 default:
1239 dev_err(dev, "%s - nonzero urb status, %d\n",
1240 __func__, status);
1241 }
1242
1243 if (status == -EPIPE)
1244 goto exit;
1245
1246 if (status) {
1247 dev_err(dev, "%s - stopping read!\n", __func__);
1248 return;
1249 }
1250
1251 if (urb->actual_length) {
1252 usb_serial_debug_data(dev, __func__, urb->actual_length,
1253 urb->transfer_buffer);
1254
1255 if (!tport->tp_is_open)
1256 dev_dbg(dev, "%s - port closed, dropping data\n",
1257 __func__);
1258 else
1259 ti_recv(port, urb->transfer_buffer, urb->actual_length);
1260 spin_lock(&tport->tp_lock);
1261 port->icount.rx += urb->actual_length;
1262 spin_unlock(&tport->tp_lock);
1263 }
1264
1265 exit:
1266 /* continue to read unless stopping */
1267 spin_lock(&tport->tp_lock);
1268 if (tport->tp_read_urb_state == TI_READ_URB_RUNNING)
1269 retval = usb_submit_urb(urb, GFP_ATOMIC);
1270 else if (tport->tp_read_urb_state == TI_READ_URB_STOPPING)
1271 tport->tp_read_urb_state = TI_READ_URB_STOPPED;
1272
1273 spin_unlock(&tport->tp_lock);
1274 if (retval)
1275 dev_err(dev, "%s - resubmit read urb failed, %d\n",
1276 __func__, retval);
1277 }
1278
1279
1280 static void ti_bulk_out_callback(struct urb *urb)
1281 {
1282 struct ti_port *tport = urb->context;
1283 struct usb_serial_port *port = tport->tp_port;
1284 int status = urb->status;
1285
1286 tport->tp_write_urb_in_use = 0;
1287
1288 switch (status) {
1289 case 0:
1290 break;
1291 case -ECONNRESET:
1292 case -ENOENT:
1293 case -ESHUTDOWN:
1294 dev_dbg(&port->dev, "%s - urb shutting down, %d\n", __func__, status);
1295 return;
1296 default:
1297 dev_err_console(port, "%s - nonzero urb status, %d\n",
1298 __func__, status);
1299 }
1300
1301 /* send any buffered data */
1302 ti_send(tport);
1303 }
1304
1305
1306 static void ti_recv(struct usb_serial_port *port, unsigned char *data,
1307 int length)
1308 {
1309 int cnt;
1310
1311 do {
1312 cnt = tty_insert_flip_string(&port->port, data, length);
1313 if (cnt < length) {
1314 dev_err(&port->dev, "%s - dropping data, %d bytes lost\n",
1315 __func__, length - cnt);
1316 if (cnt == 0)
1317 break;
1318 }
1319 tty_flip_buffer_push(&port->port);
1320 data += cnt;
1321 length -= cnt;
1322 } while (length > 0);
1323 }
1324
1325
1326 static void ti_send(struct ti_port *tport)
1327 {
1328 int count, result;
1329 struct usb_serial_port *port = tport->tp_port;
1330 unsigned long flags;
1331
1332 spin_lock_irqsave(&tport->tp_lock, flags);
1333
1334 if (tport->tp_write_urb_in_use)
1335 goto unlock;
1336
1337 count = kfifo_out(&port->write_fifo,
1338 port->write_urb->transfer_buffer,
1339 port->bulk_out_size);
1340
1341 if (count == 0)
1342 goto unlock;
1343
1344 tport->tp_write_urb_in_use = 1;
1345
1346 spin_unlock_irqrestore(&tport->tp_lock, flags);
1347
1348 usb_serial_debug_data(&port->dev, __func__, count,
1349 port->write_urb->transfer_buffer);
1350
1351 usb_fill_bulk_urb(port->write_urb, port->serial->dev,
1352 usb_sndbulkpipe(port->serial->dev,
1353 port->bulk_out_endpointAddress),
1354 port->write_urb->transfer_buffer, count,
1355 ti_bulk_out_callback, tport);
1356
1357 result = usb_submit_urb(port->write_urb, GFP_ATOMIC);
1358 if (result) {
1359 dev_err_console(port, "%s - submit write urb failed, %d\n",
1360 __func__, result);
1361 tport->tp_write_urb_in_use = 0;
1362 /* TODO: reschedule ti_send */
1363 } else {
1364 spin_lock_irqsave(&tport->tp_lock, flags);
1365 port->icount.tx += count;
1366 spin_unlock_irqrestore(&tport->tp_lock, flags);
1367 }
1368
1369 /* more room in the buffer for new writes, wakeup */
1370 tty_port_tty_wakeup(&port->port);
1371
1372 return;
1373 unlock:
1374 spin_unlock_irqrestore(&tport->tp_lock, flags);
1375 return;
1376 }
1377
1378
1379 static int ti_set_mcr(struct ti_port *tport, unsigned int mcr)
1380 {
1381 unsigned long flags;
1382 int status;
1383
1384 status = ti_write_byte(tport->tp_port, tport->tp_tdev,
1385 tport->tp_uart_base_addr + TI_UART_OFFSET_MCR,
1386 TI_MCR_RTS | TI_MCR_DTR | TI_MCR_LOOP, mcr);
1387
1388 spin_lock_irqsave(&tport->tp_lock, flags);
1389 if (!status)
1390 tport->tp_shadow_mcr = mcr;
1391 spin_unlock_irqrestore(&tport->tp_lock, flags);
1392
1393 return status;
1394 }
1395
1396
1397 static int ti_get_lsr(struct ti_port *tport, u8 *lsr)
1398 {
1399 int size, status;
1400 struct ti_device *tdev = tport->tp_tdev;
1401 struct usb_serial_port *port = tport->tp_port;
1402 int port_number = port->port_number;
1403 struct ti_port_status *data;
1404
1405 size = sizeof(struct ti_port_status);
1406 data = kmalloc(size, GFP_KERNEL);
1407 if (!data)
1408 return -ENOMEM;
1409
1410 status = ti_command_in_sync(tdev, TI_GET_PORT_STATUS,
1411 (__u8)(TI_UART1_PORT+port_number), 0, (__u8 *)data, size);
1412 if (status) {
1413 dev_err(&port->dev,
1414 "%s - get port status command failed, %d\n",
1415 __func__, status);
1416 goto free_data;
1417 }
1418
1419 dev_dbg(&port->dev, "%s - lsr 0x%02X\n", __func__, data->bLSR);
1420
1421 *lsr = data->bLSR;
1422
1423 free_data:
1424 kfree(data);
1425 return status;
1426 }
1427
1428
1429 static int ti_get_serial_info(struct ti_port *tport,
1430 struct serial_struct __user *ret_arg)
1431 {
1432 struct usb_serial_port *port = tport->tp_port;
1433 struct serial_struct ret_serial;
1434 unsigned cwait;
1435
1436 if (!ret_arg)
1437 return -EFAULT;
1438
1439 cwait = port->port.closing_wait;
1440 if (cwait != ASYNC_CLOSING_WAIT_NONE)
1441 cwait = jiffies_to_msecs(cwait) / 10;
1442
1443 memset(&ret_serial, 0, sizeof(ret_serial));
1444
1445 ret_serial.type = PORT_16550A;
1446 ret_serial.line = port->minor;
1447 ret_serial.port = port->port_number;
1448 ret_serial.xmit_fifo_size = kfifo_size(&port->write_fifo);
1449 ret_serial.baud_base = tport->tp_tdev->td_is_3410 ? 921600 : 460800;
1450 ret_serial.closing_wait = cwait;
1451
1452 if (copy_to_user(ret_arg, &ret_serial, sizeof(*ret_arg)))
1453 return -EFAULT;
1454
1455 return 0;
1456 }
1457
1458
1459 static int ti_set_serial_info(struct tty_struct *tty, struct ti_port *tport,
1460 struct serial_struct __user *new_arg)
1461 {
1462 struct serial_struct new_serial;
1463 unsigned cwait;
1464
1465 if (copy_from_user(&new_serial, new_arg, sizeof(new_serial)))
1466 return -EFAULT;
1467
1468 cwait = new_serial.closing_wait;
1469 if (cwait != ASYNC_CLOSING_WAIT_NONE)
1470 cwait = msecs_to_jiffies(10 * new_serial.closing_wait);
1471
1472 tport->tp_port->port.closing_wait = cwait;
1473
1474 return 0;
1475 }
1476
1477
1478 static void ti_handle_new_msr(struct ti_port *tport, u8 msr)
1479 {
1480 struct async_icount *icount;
1481 struct tty_struct *tty;
1482 unsigned long flags;
1483
1484 dev_dbg(&tport->tp_port->dev, "%s - msr 0x%02X\n", __func__, msr);
1485
1486 if (msr & TI_MSR_DELTA_MASK) {
1487 spin_lock_irqsave(&tport->tp_lock, flags);
1488 icount = &tport->tp_port->icount;
1489 if (msr & TI_MSR_DELTA_CTS)
1490 icount->cts++;
1491 if (msr & TI_MSR_DELTA_DSR)
1492 icount->dsr++;
1493 if (msr & TI_MSR_DELTA_CD)
1494 icount->dcd++;
1495 if (msr & TI_MSR_DELTA_RI)
1496 icount->rng++;
1497 wake_up_interruptible(&tport->tp_port->port.delta_msr_wait);
1498 spin_unlock_irqrestore(&tport->tp_lock, flags);
1499 }
1500
1501 tport->tp_msr = msr & TI_MSR_MASK;
1502
1503 /* handle CTS flow control */
1504 tty = tty_port_tty_get(&tport->tp_port->port);
1505 if (tty && C_CRTSCTS(tty)) {
1506 if (msr & TI_MSR_CTS)
1507 tty_wakeup(tty);
1508 }
1509 tty_kref_put(tty);
1510 }
1511
1512
1513 static void ti_stop_read(struct ti_port *tport, struct tty_struct *tty)
1514 {
1515 unsigned long flags;
1516
1517 spin_lock_irqsave(&tport->tp_lock, flags);
1518
1519 if (tport->tp_read_urb_state == TI_READ_URB_RUNNING)
1520 tport->tp_read_urb_state = TI_READ_URB_STOPPING;
1521
1522 spin_unlock_irqrestore(&tport->tp_lock, flags);
1523 }
1524
1525
1526 static int ti_restart_read(struct ti_port *tport, struct tty_struct *tty)
1527 {
1528 struct urb *urb;
1529 int status = 0;
1530 unsigned long flags;
1531
1532 spin_lock_irqsave(&tport->tp_lock, flags);
1533
1534 if (tport->tp_read_urb_state == TI_READ_URB_STOPPED) {
1535 tport->tp_read_urb_state = TI_READ_URB_RUNNING;
1536 urb = tport->tp_port->read_urb;
1537 spin_unlock_irqrestore(&tport->tp_lock, flags);
1538 urb->context = tport;
1539 status = usb_submit_urb(urb, GFP_KERNEL);
1540 } else {
1541 tport->tp_read_urb_state = TI_READ_URB_RUNNING;
1542 spin_unlock_irqrestore(&tport->tp_lock, flags);
1543 }
1544
1545 return status;
1546 }
1547
1548
1549 static int ti_command_out_sync(struct ti_device *tdev, __u8 command,
1550 __u16 moduleid, __u16 value, __u8 *data, int size)
1551 {
1552 int status;
1553
1554 status = usb_control_msg(tdev->td_serial->dev,
1555 usb_sndctrlpipe(tdev->td_serial->dev, 0), command,
1556 (USB_TYPE_VENDOR | USB_RECIP_DEVICE | USB_DIR_OUT),
1557 value, moduleid, data, size, 1000);
1558
1559 if (status < 0)
1560 return status;
1561
1562 return 0;
1563 }
1564
1565
1566 static int ti_command_in_sync(struct ti_device *tdev, __u8 command,
1567 __u16 moduleid, __u16 value, __u8 *data, int size)
1568 {
1569 int status;
1570
1571 status = usb_control_msg(tdev->td_serial->dev,
1572 usb_rcvctrlpipe(tdev->td_serial->dev, 0), command,
1573 (USB_TYPE_VENDOR | USB_RECIP_DEVICE | USB_DIR_IN),
1574 value, moduleid, data, size, 1000);
1575
1576 if (status == size)
1577 status = 0;
1578 else if (status >= 0)
1579 status = -ECOMM;
1580
1581 return status;
1582 }
1583
1584
1585 static int ti_write_byte(struct usb_serial_port *port,
1586 struct ti_device *tdev, unsigned long addr,
1587 u8 mask, u8 byte)
1588 {
1589 int status;
1590 unsigned int size;
1591 struct ti_write_data_bytes *data;
1592
1593 dev_dbg(&port->dev, "%s - addr 0x%08lX, mask 0x%02X, byte 0x%02X\n", __func__,
1594 addr, mask, byte);
1595
1596 size = sizeof(struct ti_write_data_bytes) + 2;
1597 data = kmalloc(size, GFP_KERNEL);
1598 if (!data)
1599 return -ENOMEM;
1600
1601 data->bAddrType = TI_RW_DATA_ADDR_XDATA;
1602 data->bDataType = TI_RW_DATA_BYTE;
1603 data->bDataCounter = 1;
1604 data->wBaseAddrHi = cpu_to_be16(addr>>16);
1605 data->wBaseAddrLo = cpu_to_be16(addr);
1606 data->bData[0] = mask;
1607 data->bData[1] = byte;
1608
1609 status = ti_command_out_sync(tdev, TI_WRITE_DATA, TI_RAM_PORT, 0,
1610 (__u8 *)data, size);
1611
1612 if (status < 0)
1613 dev_err(&port->dev, "%s - failed, %d\n", __func__, status);
1614
1615 kfree(data);
1616
1617 return status;
1618 }
1619
1620 static int ti_do_download(struct usb_device *dev, int pipe,
1621 u8 *buffer, int size)
1622 {
1623 int pos;
1624 u8 cs = 0;
1625 int done;
1626 struct ti_firmware_header *header;
1627 int status = 0;
1628 int len;
1629
1630 for (pos = sizeof(struct ti_firmware_header); pos < size; pos++)
1631 cs = (u8)(cs + buffer[pos]);
1632
1633 header = (struct ti_firmware_header *)buffer;
1634 header->wLength = cpu_to_le16(size - sizeof(*header));
1635 header->bCheckSum = cs;
1636
1637 dev_dbg(&dev->dev, "%s - downloading firmware\n", __func__);
1638 for (pos = 0; pos < size; pos += done) {
1639 len = min(size - pos, TI_DOWNLOAD_MAX_PACKET_SIZE);
1640 status = usb_bulk_msg(dev, pipe, buffer + pos, len,
1641 &done, 1000);
1642 if (status)
1643 break;
1644 }
1645 return status;
1646 }
1647
1648 static int ti_download_firmware(struct ti_device *tdev)
1649 {
1650 int status;
1651 int buffer_size;
1652 u8 *buffer;
1653 struct usb_device *dev = tdev->td_serial->dev;
1654 unsigned int pipe = usb_sndbulkpipe(dev,
1655 tdev->td_serial->port[0]->bulk_out_endpointAddress);
1656 const struct firmware *fw_p;
1657 char buf[32];
1658
1659 if (le16_to_cpu(dev->descriptor.idVendor) == MXU1_VENDOR_ID) {
1660 snprintf(buf,
1661 sizeof(buf),
1662 "moxa/moxa-%04x.fw",
1663 le16_to_cpu(dev->descriptor.idProduct));
1664
1665 status = request_firmware(&fw_p, buf, &dev->dev);
1666 goto check_firmware;
1667 }
1668
1669 /* try ID specific firmware first, then try generic firmware */
1670 sprintf(buf, "ti_usb-v%04x-p%04x.fw",
1671 le16_to_cpu(dev->descriptor.idVendor),
1672 le16_to_cpu(dev->descriptor.idProduct));
1673 status = request_firmware(&fw_p, buf, &dev->dev);
1674
1675 if (status != 0) {
1676 buf[0] = '\0';
1677 if (le16_to_cpu(dev->descriptor.idVendor) == MTS_VENDOR_ID) {
1678 switch (le16_to_cpu(dev->descriptor.idProduct)) {
1679 case MTS_CDMA_PRODUCT_ID:
1680 strcpy(buf, "mts_cdma.fw");
1681 break;
1682 case MTS_GSM_PRODUCT_ID:
1683 strcpy(buf, "mts_gsm.fw");
1684 break;
1685 case MTS_EDGE_PRODUCT_ID:
1686 strcpy(buf, "mts_edge.fw");
1687 break;
1688 case MTS_MT9234MU_PRODUCT_ID:
1689 strcpy(buf, "mts_mt9234mu.fw");
1690 break;
1691 case MTS_MT9234ZBA_PRODUCT_ID:
1692 strcpy(buf, "mts_mt9234zba.fw");
1693 break;
1694 case MTS_MT9234ZBAOLD_PRODUCT_ID:
1695 strcpy(buf, "mts_mt9234zba.fw");
1696 break; }
1697 }
1698 if (buf[0] == '\0') {
1699 if (tdev->td_is_3410)
1700 strcpy(buf, "ti_3410.fw");
1701 else
1702 strcpy(buf, "ti_5052.fw");
1703 }
1704 status = request_firmware(&fw_p, buf, &dev->dev);
1705 }
1706
1707 check_firmware:
1708 if (status) {
1709 dev_err(&dev->dev, "%s - firmware not found\n", __func__);
1710 return -ENOENT;
1711 }
1712 if (fw_p->size > TI_FIRMWARE_BUF_SIZE) {
1713 dev_err(&dev->dev, "%s - firmware too large %zu\n", __func__, fw_p->size);
1714 release_firmware(fw_p);
1715 return -ENOENT;
1716 }
1717
1718 buffer_size = TI_FIRMWARE_BUF_SIZE + sizeof(struct ti_firmware_header);
1719 buffer = kmalloc(buffer_size, GFP_KERNEL);
1720 if (buffer) {
1721 memcpy(buffer, fw_p->data, fw_p->size);
1722 memset(buffer + fw_p->size, 0xff, buffer_size - fw_p->size);
1723 status = ti_do_download(dev, pipe, buffer, fw_p->size);
1724 kfree(buffer);
1725 } else {
1726 status = -ENOMEM;
1727 }
1728 release_firmware(fw_p);
1729 if (status) {
1730 dev_err(&dev->dev, "%s - error downloading firmware, %d\n",
1731 __func__, status);
1732 return status;
1733 }
1734
1735 dev_dbg(&dev->dev, "%s - download successful\n", __func__);
1736
1737 return 0;
1738 }
Linux with added FPC-III support