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1// SPDX-License-Identifier: GPL-2.0+
2/*
3 * TI 3410/5052 USB Serial Driver
4 *
5 * Copyright (C) 2004 Texas Instruments
6 *
7 * This driver is based on the Linux io_ti driver, which is
8 * Copyright (C) 2000-2002 Inside Out Networks
9 * Copyright (C) 2001-2002 Greg Kroah-Hartman
10 *
11 * For questions or problems with this driver, contact Texas Instruments
12 * technical support, or Al Borchers <alborchers@steinerpoint.com>, or
13 * Peter Berger <pberger@brimson.com>.
14 */
15
16#include <linux/kernel.h>
17#include <linux/errno.h>
18#include <linux/firmware.h>
19#include <linux/slab.h>
20#include <linux/tty.h>
21#include <linux/tty_driver.h>
22#include <linux/tty_flip.h>
23#include <linux/module.h>
24#include <linux/spinlock.h>
25#include <linux/ioctl.h>
26#include <linux/serial.h>
27#include <linux/kfifo.h>
28#include <linux/mutex.h>
29#include <linux/uaccess.h>
30#include <linux/usb.h>
31#include <linux/usb/serial.h>
32
33/* Configuration ids */
34#define TI_BOOT_CONFIG 1
35#define TI_ACTIVE_CONFIG 2
36
37/* Vendor and product ids */
38#define TI_VENDOR_ID 0x0451
39#define IBM_VENDOR_ID 0x04b3
40#define TI_3410_PRODUCT_ID 0x3410
41#define IBM_4543_PRODUCT_ID 0x4543
42#define IBM_454B_PRODUCT_ID 0x454b
43#define IBM_454C_PRODUCT_ID 0x454c
44#define TI_3410_EZ430_ID 0xF430 /* TI ez430 development tool */
45#define TI_5052_BOOT_PRODUCT_ID 0x5052 /* no EEPROM, no firmware */
46#define TI_5152_BOOT_PRODUCT_ID 0x5152 /* no EEPROM, no firmware */
47#define TI_5052_EEPROM_PRODUCT_ID 0x505A /* EEPROM, no firmware */
48#define TI_5052_FIRMWARE_PRODUCT_ID 0x505F /* firmware is running */
49#define FRI2_PRODUCT_ID 0x5053 /* Fish River Island II */
50
51/* Multi-Tech vendor and product ids */
52#define MTS_VENDOR_ID 0x06E0
53#define MTS_GSM_NO_FW_PRODUCT_ID 0xF108
54#define MTS_CDMA_NO_FW_PRODUCT_ID 0xF109
55#define MTS_CDMA_PRODUCT_ID 0xF110
56#define MTS_GSM_PRODUCT_ID 0xF111
57#define MTS_EDGE_PRODUCT_ID 0xF112
58#define MTS_MT9234MU_PRODUCT_ID 0xF114
59#define MTS_MT9234ZBA_PRODUCT_ID 0xF115
60#define MTS_MT9234ZBAOLD_PRODUCT_ID 0x0319
61
62/* Abbott Diabetics vendor and product ids */
63#define ABBOTT_VENDOR_ID 0x1a61
64#define ABBOTT_STEREO_PLUG_ID 0x3410
65#define ABBOTT_PRODUCT_ID ABBOTT_STEREO_PLUG_ID
66#define ABBOTT_STRIP_PORT_ID 0x3420
67
68/* Honeywell vendor and product IDs */
69#define HONEYWELL_VENDOR_ID 0x10ac
70#define HONEYWELL_HGI80_PRODUCT_ID 0x0102 /* Honeywell HGI80 */
71
72/* Moxa UPORT 11x0 vendor and product IDs */
73#define MXU1_VENDOR_ID 0x110a
74#define MXU1_1110_PRODUCT_ID 0x1110
75#define MXU1_1130_PRODUCT_ID 0x1130
76#define MXU1_1150_PRODUCT_ID 0x1150
77#define MXU1_1151_PRODUCT_ID 0x1151
78#define MXU1_1131_PRODUCT_ID 0x1131
79
80/* Commands */
81#define TI_GET_VERSION 0x01
82#define TI_GET_PORT_STATUS 0x02
83#define TI_GET_PORT_DEV_INFO 0x03
84#define TI_GET_CONFIG 0x04
85#define TI_SET_CONFIG 0x05
86#define TI_OPEN_PORT 0x06
87#define TI_CLOSE_PORT 0x07
88#define TI_START_PORT 0x08
89#define TI_STOP_PORT 0x09
90#define TI_TEST_PORT 0x0A
91#define TI_PURGE_PORT 0x0B
92#define TI_RESET_EXT_DEVICE 0x0C
93#define TI_WRITE_DATA 0x80
94#define TI_READ_DATA 0x81
95#define TI_REQ_TYPE_CLASS 0x82
96
97/* Module identifiers */
98#define TI_I2C_PORT 0x01
99#define TI_IEEE1284_PORT 0x02
100#define TI_UART1_PORT 0x03
101#define TI_UART2_PORT 0x04
102#define TI_RAM_PORT 0x05
103
104/* Modem status */
105#define TI_MSR_DELTA_CTS 0x01
106#define TI_MSR_DELTA_DSR 0x02
107#define TI_MSR_DELTA_RI 0x04
108#define TI_MSR_DELTA_CD 0x08
109#define TI_MSR_CTS 0x10
110#define TI_MSR_DSR 0x20
111#define TI_MSR_RI 0x40
112#define TI_MSR_CD 0x80
113#define TI_MSR_DELTA_MASK 0x0F
114#define TI_MSR_MASK 0xF0
115
116/* Line status */
117#define TI_LSR_OVERRUN_ERROR 0x01
118#define TI_LSR_PARITY_ERROR 0x02
119#define TI_LSR_FRAMING_ERROR 0x04
120#define TI_LSR_BREAK 0x08
121#define TI_LSR_ERROR 0x0F
122#define TI_LSR_RX_FULL 0x10
123#define TI_LSR_TX_EMPTY 0x20
124
125/* Line control */
126#define TI_LCR_BREAK 0x40
127
128/* Modem control */
129#define TI_MCR_LOOP 0x04
130#define TI_MCR_DTR 0x10
131#define TI_MCR_RTS 0x20
132
133/* Mask settings */
134#define TI_UART_ENABLE_RTS_IN 0x0001
135#define TI_UART_DISABLE_RTS 0x0002
136#define TI_UART_ENABLE_PARITY_CHECKING 0x0008
137#define TI_UART_ENABLE_DSR_OUT 0x0010
138#define TI_UART_ENABLE_CTS_OUT 0x0020
139#define TI_UART_ENABLE_X_OUT 0x0040
140#define TI_UART_ENABLE_XA_OUT 0x0080
141#define TI_UART_ENABLE_X_IN 0x0100
142#define TI_UART_ENABLE_DTR_IN 0x0800
143#define TI_UART_DISABLE_DTR 0x1000
144#define TI_UART_ENABLE_MS_INTS 0x2000
145#define TI_UART_ENABLE_AUTO_START_DMA 0x4000
146
147/* Parity */
148#define TI_UART_NO_PARITY 0x00
149#define TI_UART_ODD_PARITY 0x01
150#define TI_UART_EVEN_PARITY 0x02
151#define TI_UART_MARK_PARITY 0x03
152#define TI_UART_SPACE_PARITY 0x04
153
154/* Stop bits */
155#define TI_UART_1_STOP_BITS 0x00
156#define TI_UART_1_5_STOP_BITS 0x01
157#define TI_UART_2_STOP_BITS 0x02
158
159/* Bits per character */
160#define TI_UART_5_DATA_BITS 0x00
161#define TI_UART_6_DATA_BITS 0x01
162#define TI_UART_7_DATA_BITS 0x02
163#define TI_UART_8_DATA_BITS 0x03
164
165/* 232/485 modes */
166#define TI_UART_232 0x00
167#define TI_UART_485_RECEIVER_DISABLED 0x01
168#define TI_UART_485_RECEIVER_ENABLED 0x02
169
170/* Pipe transfer mode and timeout */
171#define TI_PIPE_MODE_CONTINUOUS 0x01
172#define TI_PIPE_MODE_MASK 0x03
173#define TI_PIPE_TIMEOUT_MASK 0x7C
174#define TI_PIPE_TIMEOUT_ENABLE 0x80
175
176/* Config struct */
177struct ti_uart_config {
178 __be16 wBaudRate;
179 __be16 wFlags;
180 u8 bDataBits;
181 u8 bParity;
182 u8 bStopBits;
183 char cXon;
184 char cXoff;
185 u8 bUartMode;
186} __packed;
187
188/* Get port status */
189struct ti_port_status {
190 u8 bCmdCode;
191 u8 bModuleId;
192 u8 bErrorCode;
193 u8 bMSR;
194 u8 bLSR;
195} __packed;
196
197/* Purge modes */
198#define TI_PURGE_OUTPUT 0x00
199#define TI_PURGE_INPUT 0x80
200
201/* Read/Write data */
202#define TI_RW_DATA_ADDR_SFR 0x10
203#define TI_RW_DATA_ADDR_IDATA 0x20
204#define TI_RW_DATA_ADDR_XDATA 0x30
205#define TI_RW_DATA_ADDR_CODE 0x40
206#define TI_RW_DATA_ADDR_GPIO 0x50
207#define TI_RW_DATA_ADDR_I2C 0x60
208#define TI_RW_DATA_ADDR_FLASH 0x70
209#define TI_RW_DATA_ADDR_DSP 0x80
210
211#define TI_RW_DATA_UNSPECIFIED 0x00
212#define TI_RW_DATA_BYTE 0x01
213#define TI_RW_DATA_WORD 0x02
214#define TI_RW_DATA_DOUBLE_WORD 0x04
215
216struct ti_write_data_bytes {
217 u8 bAddrType;
218 u8 bDataType;
219 u8 bDataCounter;
220 __be16 wBaseAddrHi;
221 __be16 wBaseAddrLo;
222 u8 bData[];
223} __packed;
224
225struct ti_read_data_request {
226 __u8 bAddrType;
227 __u8 bDataType;
228 __u8 bDataCounter;
229 __be16 wBaseAddrHi;
230 __be16 wBaseAddrLo;
231} __packed;
232
233struct ti_read_data_bytes {
234 __u8 bCmdCode;
235 __u8 bModuleId;
236 __u8 bErrorCode;
237 __u8 bData[];
238} __packed;
239
240/* Interrupt struct */
241struct ti_interrupt {
242 __u8 bICode;
243 __u8 bIInfo;
244} __packed;
245
246/* Interrupt codes */
247#define TI_CODE_HARDWARE_ERROR 0xFF
248#define TI_CODE_DATA_ERROR 0x03
249#define TI_CODE_MODEM_STATUS 0x04
250
251/* Download firmware max packet size */
252#define TI_DOWNLOAD_MAX_PACKET_SIZE 64
253
254/* Firmware image header */
255struct ti_firmware_header {
256 __le16 wLength;
257 u8 bCheckSum;
258} __packed;
259
260/* UART addresses */
261#define TI_UART1_BASE_ADDR 0xFFA0 /* UART 1 base address */
262#define TI_UART2_BASE_ADDR 0xFFB0 /* UART 2 base address */
263#define TI_UART_OFFSET_LCR 0x0002 /* UART MCR register offset */
264#define TI_UART_OFFSET_MCR 0x0004 /* UART MCR register offset */
265
266#define TI_DRIVER_AUTHOR "Al Borchers <alborchers@steinerpoint.com>"
267#define TI_DRIVER_DESC "TI USB 3410/5052 Serial Driver"
268
269#define TI_FIRMWARE_BUF_SIZE 16284
270
271#define TI_TRANSFER_TIMEOUT 2
272
273#define TI_DEFAULT_CLOSING_WAIT 4000 /* in .01 secs */
274
275/* read urb states */
276#define TI_READ_URB_RUNNING 0
277#define TI_READ_URB_STOPPING 1
278#define TI_READ_URB_STOPPED 2
279
280#define TI_EXTRA_VID_PID_COUNT 5
281
282struct ti_port {
283 int tp_is_open;
284 u8 tp_msr;
285 u8 tp_shadow_mcr;
286 u8 tp_uart_mode; /* 232 or 485 modes */
287 unsigned int tp_uart_base_addr;
288 struct ti_device *tp_tdev;
289 struct usb_serial_port *tp_port;
290 spinlock_t tp_lock;
291 int tp_read_urb_state;
292 int tp_write_urb_in_use;
293};
294
295struct ti_device {
296 struct mutex td_open_close_lock;
297 int td_open_port_count;
298 struct usb_serial *td_serial;
299 int td_is_3410;
300 bool td_rs485_only;
301};
302
303static int ti_startup(struct usb_serial *serial);
304static void ti_release(struct usb_serial *serial);
305static int ti_port_probe(struct usb_serial_port *port);
306static int ti_port_remove(struct usb_serial_port *port);
307static int ti_open(struct tty_struct *tty, struct usb_serial_port *port);
308static void ti_close(struct usb_serial_port *port);
309static int ti_write(struct tty_struct *tty, struct usb_serial_port *port,
310 const unsigned char *data, int count);
311static int ti_write_room(struct tty_struct *tty);
312static int ti_chars_in_buffer(struct tty_struct *tty);
313static bool ti_tx_empty(struct usb_serial_port *port);
314static void ti_throttle(struct tty_struct *tty);
315static void ti_unthrottle(struct tty_struct *tty);
316static void ti_set_termios(struct tty_struct *tty,
317 struct usb_serial_port *port, struct ktermios *old_termios);
318static int ti_tiocmget(struct tty_struct *tty);
319static int ti_tiocmset(struct tty_struct *tty,
320 unsigned int set, unsigned int clear);
321static void ti_break(struct tty_struct *tty, int break_state);
322static void ti_interrupt_callback(struct urb *urb);
323static void ti_bulk_in_callback(struct urb *urb);
324static void ti_bulk_out_callback(struct urb *urb);
325
326static void ti_recv(struct usb_serial_port *port, unsigned char *data,
327 int length);
328static void ti_send(struct ti_port *tport);
329static int ti_set_mcr(struct ti_port *tport, unsigned int mcr);
330static int ti_get_lsr(struct ti_port *tport, u8 *lsr);
331static int ti_get_serial_info(struct tty_struct *tty,
332 struct serial_struct *ss);
333static int ti_set_serial_info(struct tty_struct *tty,
334 struct serial_struct *ss);
335static void ti_handle_new_msr(struct ti_port *tport, u8 msr);
336
337static void ti_stop_read(struct ti_port *tport, struct tty_struct *tty);
338static int ti_restart_read(struct ti_port *tport, struct tty_struct *tty);
339
340static int ti_command_out_sync(struct ti_device *tdev, __u8 command,
341 __u16 moduleid, __u16 value, __u8 *data, int size);
342static int ti_command_in_sync(struct ti_device *tdev, __u8 command,
343 __u16 moduleid, __u16 value, __u8 *data, int size);
344
345static int ti_write_byte(struct usb_serial_port *port, struct ti_device *tdev,
346 unsigned long addr, u8 mask, u8 byte);
347
348static int ti_download_firmware(struct ti_device *tdev);
349
350static int closing_wait = TI_DEFAULT_CLOSING_WAIT;
351
352static const struct usb_device_id ti_id_table_3410[] = {
353 { USB_DEVICE(TI_VENDOR_ID, TI_3410_PRODUCT_ID) },
354 { USB_DEVICE(TI_VENDOR_ID, TI_3410_EZ430_ID) },
355 { USB_DEVICE(MTS_VENDOR_ID, MTS_GSM_NO_FW_PRODUCT_ID) },
356 { USB_DEVICE(MTS_VENDOR_ID, MTS_CDMA_NO_FW_PRODUCT_ID) },
357 { USB_DEVICE(MTS_VENDOR_ID, MTS_CDMA_PRODUCT_ID) },
358 { USB_DEVICE(MTS_VENDOR_ID, MTS_GSM_PRODUCT_ID) },
359 { USB_DEVICE(MTS_VENDOR_ID, MTS_EDGE_PRODUCT_ID) },
360 { USB_DEVICE(MTS_VENDOR_ID, MTS_MT9234MU_PRODUCT_ID) },
361 { USB_DEVICE(MTS_VENDOR_ID, MTS_MT9234ZBA_PRODUCT_ID) },
362 { USB_DEVICE(MTS_VENDOR_ID, MTS_MT9234ZBAOLD_PRODUCT_ID) },
363 { USB_DEVICE(IBM_VENDOR_ID, IBM_4543_PRODUCT_ID) },
364 { USB_DEVICE(IBM_VENDOR_ID, IBM_454B_PRODUCT_ID) },
365 { USB_DEVICE(IBM_VENDOR_ID, IBM_454C_PRODUCT_ID) },
366 { USB_DEVICE(ABBOTT_VENDOR_ID, ABBOTT_STEREO_PLUG_ID) },
367 { USB_DEVICE(ABBOTT_VENDOR_ID, ABBOTT_STRIP_PORT_ID) },
368 { USB_DEVICE(TI_VENDOR_ID, FRI2_PRODUCT_ID) },
369 { USB_DEVICE(HONEYWELL_VENDOR_ID, HONEYWELL_HGI80_PRODUCT_ID) },
370 { USB_DEVICE(MXU1_VENDOR_ID, MXU1_1110_PRODUCT_ID) },
371 { USB_DEVICE(MXU1_VENDOR_ID, MXU1_1130_PRODUCT_ID) },
372 { USB_DEVICE(MXU1_VENDOR_ID, MXU1_1131_PRODUCT_ID) },
373 { USB_DEVICE(MXU1_VENDOR_ID, MXU1_1150_PRODUCT_ID) },
374 { USB_DEVICE(MXU1_VENDOR_ID, MXU1_1151_PRODUCT_ID) },
375 { } /* terminator */
376};
377
378static const struct usb_device_id ti_id_table_5052[] = {
379 { USB_DEVICE(TI_VENDOR_ID, TI_5052_BOOT_PRODUCT_ID) },
380 { USB_DEVICE(TI_VENDOR_ID, TI_5152_BOOT_PRODUCT_ID) },
381 { USB_DEVICE(TI_VENDOR_ID, TI_5052_EEPROM_PRODUCT_ID) },
382 { USB_DEVICE(TI_VENDOR_ID, TI_5052_FIRMWARE_PRODUCT_ID) },
383 { }
384};
385
386static const struct usb_device_id ti_id_table_combined[] = {
387 { USB_DEVICE(TI_VENDOR_ID, TI_3410_PRODUCT_ID) },
388 { USB_DEVICE(TI_VENDOR_ID, TI_3410_EZ430_ID) },
389 { USB_DEVICE(MTS_VENDOR_ID, MTS_GSM_NO_FW_PRODUCT_ID) },
390 { USB_DEVICE(MTS_VENDOR_ID, MTS_CDMA_NO_FW_PRODUCT_ID) },
391 { USB_DEVICE(MTS_VENDOR_ID, MTS_CDMA_PRODUCT_ID) },
392 { USB_DEVICE(MTS_VENDOR_ID, MTS_GSM_PRODUCT_ID) },
393 { USB_DEVICE(MTS_VENDOR_ID, MTS_EDGE_PRODUCT_ID) },
394 { USB_DEVICE(MTS_VENDOR_ID, MTS_MT9234MU_PRODUCT_ID) },
395 { USB_DEVICE(MTS_VENDOR_ID, MTS_MT9234ZBA_PRODUCT_ID) },
396 { USB_DEVICE(MTS_VENDOR_ID, MTS_MT9234ZBAOLD_PRODUCT_ID) },
397 { USB_DEVICE(TI_VENDOR_ID, TI_5052_BOOT_PRODUCT_ID) },
398 { USB_DEVICE(TI_VENDOR_ID, TI_5152_BOOT_PRODUCT_ID) },
399 { USB_DEVICE(TI_VENDOR_ID, TI_5052_EEPROM_PRODUCT_ID) },
400 { USB_DEVICE(TI_VENDOR_ID, TI_5052_FIRMWARE_PRODUCT_ID) },
401 { USB_DEVICE(IBM_VENDOR_ID, IBM_4543_PRODUCT_ID) },
402 { USB_DEVICE(IBM_VENDOR_ID, IBM_454B_PRODUCT_ID) },
403 { USB_DEVICE(IBM_VENDOR_ID, IBM_454C_PRODUCT_ID) },
404 { USB_DEVICE(ABBOTT_VENDOR_ID, ABBOTT_PRODUCT_ID) },
405 { USB_DEVICE(ABBOTT_VENDOR_ID, ABBOTT_STRIP_PORT_ID) },
406 { USB_DEVICE(TI_VENDOR_ID, FRI2_PRODUCT_ID) },
407 { USB_DEVICE(HONEYWELL_VENDOR_ID, HONEYWELL_HGI80_PRODUCT_ID) },
408 { USB_DEVICE(MXU1_VENDOR_ID, MXU1_1110_PRODUCT_ID) },
409 { USB_DEVICE(MXU1_VENDOR_ID, MXU1_1130_PRODUCT_ID) },
410 { USB_DEVICE(MXU1_VENDOR_ID, MXU1_1131_PRODUCT_ID) },
411 { USB_DEVICE(MXU1_VENDOR_ID, MXU1_1150_PRODUCT_ID) },
412 { USB_DEVICE(MXU1_VENDOR_ID, MXU1_1151_PRODUCT_ID) },
413 { } /* terminator */
414};
415
416static struct usb_serial_driver ti_1port_device = {
417 .driver = {
418 .owner = THIS_MODULE,
419 .name = "ti_usb_3410_5052_1",
420 },
421 .description = "TI USB 3410 1 port adapter",
422 .id_table = ti_id_table_3410,
423 .num_ports = 1,
424 .num_bulk_out = 1,
425 .attach = ti_startup,
426 .release = ti_release,
427 .port_probe = ti_port_probe,
428 .port_remove = ti_port_remove,
429 .open = ti_open,
430 .close = ti_close,
431 .write = ti_write,
432 .write_room = ti_write_room,
433 .chars_in_buffer = ti_chars_in_buffer,
434 .tx_empty = ti_tx_empty,
435 .throttle = ti_throttle,
436 .unthrottle = ti_unthrottle,
437 .get_serial = ti_get_serial_info,
438 .set_serial = ti_set_serial_info,
439 .set_termios = ti_set_termios,
440 .tiocmget = ti_tiocmget,
441 .tiocmset = ti_tiocmset,
442 .tiocmiwait = usb_serial_generic_tiocmiwait,
443 .get_icount = usb_serial_generic_get_icount,
444 .break_ctl = ti_break,
445 .read_int_callback = ti_interrupt_callback,
446 .read_bulk_callback = ti_bulk_in_callback,
447 .write_bulk_callback = ti_bulk_out_callback,
448};
449
450static struct usb_serial_driver ti_2port_device = {
451 .driver = {
452 .owner = THIS_MODULE,
453 .name = "ti_usb_3410_5052_2",
454 },
455 .description = "TI USB 5052 2 port adapter",
456 .id_table = ti_id_table_5052,
457 .num_ports = 2,
458 .num_bulk_out = 1,
459 .attach = ti_startup,
460 .release = ti_release,
461 .port_probe = ti_port_probe,
462 .port_remove = ti_port_remove,
463 .open = ti_open,
464 .close = ti_close,
465 .write = ti_write,
466 .write_room = ti_write_room,
467 .chars_in_buffer = ti_chars_in_buffer,
468 .tx_empty = ti_tx_empty,
469 .throttle = ti_throttle,
470 .unthrottle = ti_unthrottle,
471 .get_serial = ti_get_serial_info,
472 .set_serial = ti_set_serial_info,
473 .set_termios = ti_set_termios,
474 .tiocmget = ti_tiocmget,
475 .tiocmset = ti_tiocmset,
476 .tiocmiwait = usb_serial_generic_tiocmiwait,
477 .get_icount = usb_serial_generic_get_icount,
478 .break_ctl = ti_break,
479 .read_int_callback = ti_interrupt_callback,
480 .read_bulk_callback = ti_bulk_in_callback,
481 .write_bulk_callback = ti_bulk_out_callback,
482};
483
484static struct usb_serial_driver * const serial_drivers[] = {
485 &ti_1port_device, &ti_2port_device, NULL
486};
487
488MODULE_AUTHOR(TI_DRIVER_AUTHOR);
489MODULE_DESCRIPTION(TI_DRIVER_DESC);
490MODULE_LICENSE("GPL");
491
492MODULE_FIRMWARE("ti_3410.fw");
493MODULE_FIRMWARE("ti_5052.fw");
494MODULE_FIRMWARE("mts_cdma.fw");
495MODULE_FIRMWARE("mts_gsm.fw");
496MODULE_FIRMWARE("mts_edge.fw");
497MODULE_FIRMWARE("mts_mt9234mu.fw");
498MODULE_FIRMWARE("mts_mt9234zba.fw");
499MODULE_FIRMWARE("moxa/moxa-1110.fw");
500MODULE_FIRMWARE("moxa/moxa-1130.fw");
501MODULE_FIRMWARE("moxa/moxa-1131.fw");
502MODULE_FIRMWARE("moxa/moxa-1150.fw");
503MODULE_FIRMWARE("moxa/moxa-1151.fw");
504
505module_param(closing_wait, int, S_IRUGO | S_IWUSR);
506MODULE_PARM_DESC(closing_wait,
507 "Maximum wait for data to drain in close, in .01 secs, default is 4000");
508
509MODULE_DEVICE_TABLE(usb, ti_id_table_combined);
510
511module_usb_serial_driver(serial_drivers, ti_id_table_combined);
512
513static int ti_startup(struct usb_serial *serial)
514{
515 struct ti_device *tdev;
516 struct usb_device *dev = serial->dev;
517 struct usb_host_interface *cur_altsetting;
518 int num_endpoints;
519 u16 vid, pid;
520 int status;
521
522 dev_dbg(&dev->dev,
523 "%s - product 0x%4X, num configurations %d, configuration value %d\n",
524 __func__, le16_to_cpu(dev->descriptor.idProduct),
525 dev->descriptor.bNumConfigurations,
526 dev->actconfig->desc.bConfigurationValue);
527
528 tdev = kzalloc(sizeof(struct ti_device), GFP_KERNEL);
529 if (!tdev)
530 return -ENOMEM;
531
532 mutex_init(&tdev->td_open_close_lock);
533 tdev->td_serial = serial;
534 usb_set_serial_data(serial, tdev);
535
536 /* determine device type */
537 if (serial->type == &ti_1port_device)
538 tdev->td_is_3410 = 1;
539 dev_dbg(&dev->dev, "%s - device type is %s\n", __func__,
540 tdev->td_is_3410 ? "3410" : "5052");
541
542 vid = le16_to_cpu(dev->descriptor.idVendor);
543 pid = le16_to_cpu(dev->descriptor.idProduct);
544 if (vid == MXU1_VENDOR_ID) {
545 switch (pid) {
546 case MXU1_1130_PRODUCT_ID:
547 case MXU1_1131_PRODUCT_ID:
548 tdev->td_rs485_only = true;
549 break;
550 }
551 }
552
553 cur_altsetting = serial->interface->cur_altsetting;
554 num_endpoints = cur_altsetting->desc.bNumEndpoints;
555
556 /* if we have only 1 configuration and 1 endpoint, download firmware */
557 if (dev->descriptor.bNumConfigurations == 1 && num_endpoints == 1) {
558 status = ti_download_firmware(tdev);
559
560 if (status != 0)
561 goto free_tdev;
562
563 /* 3410 must be reset, 5052 resets itself */
564 if (tdev->td_is_3410) {
565 msleep_interruptible(100);
566 usb_reset_device(dev);
567 }
568
569 status = -ENODEV;
570 goto free_tdev;
571 }
572
573 /* the second configuration must be set */
574 if (dev->actconfig->desc.bConfigurationValue == TI_BOOT_CONFIG) {
575 status = usb_driver_set_configuration(dev, TI_ACTIVE_CONFIG);
576 status = status ? status : -ENODEV;
577 goto free_tdev;
578 }
579
580 if (serial->num_bulk_in < serial->num_ports ||
581 serial->num_bulk_out < serial->num_ports) {
582 dev_err(&serial->interface->dev, "missing endpoints\n");
583 status = -ENODEV;
584 goto free_tdev;
585 }
586
587 return 0;
588
589free_tdev:
590 kfree(tdev);
591 usb_set_serial_data(serial, NULL);
592 return status;
593}
594
595
596static void ti_release(struct usb_serial *serial)
597{
598 struct ti_device *tdev = usb_get_serial_data(serial);
599
600 kfree(tdev);
601}
602
603static int ti_port_probe(struct usb_serial_port *port)
604{
605 struct ti_port *tport;
606
607 tport = kzalloc(sizeof(*tport), GFP_KERNEL);
608 if (!tport)
609 return -ENOMEM;
610
611 spin_lock_init(&tport->tp_lock);
612 if (port == port->serial->port[0])
613 tport->tp_uart_base_addr = TI_UART1_BASE_ADDR;
614 else
615 tport->tp_uart_base_addr = TI_UART2_BASE_ADDR;
616 port->port.closing_wait = msecs_to_jiffies(10 * closing_wait);
617 tport->tp_port = port;
618 tport->tp_tdev = usb_get_serial_data(port->serial);
619
620 if (tport->tp_tdev->td_rs485_only)
621 tport->tp_uart_mode = TI_UART_485_RECEIVER_DISABLED;
622 else
623 tport->tp_uart_mode = TI_UART_232;
624
625 usb_set_serial_port_data(port, tport);
626
627 port->port.drain_delay = 3;
628
629 return 0;
630}
631
632static int ti_port_remove(struct usb_serial_port *port)
633{
634 struct ti_port *tport;
635
636 tport = usb_get_serial_port_data(port);
637 kfree(tport);
638
639 return 0;
640}
641
642static int ti_open(struct tty_struct *tty, struct usb_serial_port *port)
643{
644 struct ti_port *tport = usb_get_serial_port_data(port);
645 struct ti_device *tdev;
646 struct usb_device *dev;
647 struct urb *urb;
648 int port_number;
649 int status;
650 u16 open_settings;
651
652 open_settings = (TI_PIPE_MODE_CONTINUOUS |
653 TI_PIPE_TIMEOUT_ENABLE |
654 (TI_TRANSFER_TIMEOUT << 2));
655
656 dev = port->serial->dev;
657 tdev = tport->tp_tdev;
658
659 /* only one open on any port on a device at a time */
660 if (mutex_lock_interruptible(&tdev->td_open_close_lock))
661 return -ERESTARTSYS;
662
663 port_number = port->port_number;
664
665 tport->tp_msr = 0;
666 tport->tp_shadow_mcr |= (TI_MCR_RTS | TI_MCR_DTR);
667
668 /* start interrupt urb the first time a port is opened on this device */
669 if (tdev->td_open_port_count == 0) {
670 dev_dbg(&port->dev, "%s - start interrupt in urb\n", __func__);
671 urb = tdev->td_serial->port[0]->interrupt_in_urb;
672 if (!urb) {
673 dev_err(&port->dev, "%s - no interrupt urb\n", __func__);
674 status = -EINVAL;
675 goto release_lock;
676 }
677 urb->context = tdev;
678 status = usb_submit_urb(urb, GFP_KERNEL);
679 if (status) {
680 dev_err(&port->dev, "%s - submit interrupt urb failed, %d\n", __func__, status);
681 goto release_lock;
682 }
683 }
684
685 if (tty)
686 ti_set_termios(tty, port, &tty->termios);
687
688 status = ti_command_out_sync(tdev, TI_OPEN_PORT,
689 (__u8)(TI_UART1_PORT + port_number), open_settings, NULL, 0);
690 if (status) {
691 dev_err(&port->dev, "%s - cannot send open command, %d\n",
692 __func__, status);
693 goto unlink_int_urb;
694 }
695
696 status = ti_command_out_sync(tdev, TI_START_PORT,
697 (__u8)(TI_UART1_PORT + port_number), 0, NULL, 0);
698 if (status) {
699 dev_err(&port->dev, "%s - cannot send start command, %d\n",
700 __func__, status);
701 goto unlink_int_urb;
702 }
703
704 status = ti_command_out_sync(tdev, TI_PURGE_PORT,
705 (__u8)(TI_UART1_PORT + port_number), TI_PURGE_INPUT, NULL, 0);
706 if (status) {
707 dev_err(&port->dev, "%s - cannot clear input buffers, %d\n",
708 __func__, status);
709 goto unlink_int_urb;
710 }
711 status = ti_command_out_sync(tdev, TI_PURGE_PORT,
712 (__u8)(TI_UART1_PORT + port_number), TI_PURGE_OUTPUT, NULL, 0);
713 if (status) {
714 dev_err(&port->dev, "%s - cannot clear output buffers, %d\n",
715 __func__, status);
716 goto unlink_int_urb;
717 }
718
719 /* reset the data toggle on the bulk endpoints to work around bug in
720 * host controllers where things get out of sync some times */
721 usb_clear_halt(dev, port->write_urb->pipe);
722 usb_clear_halt(dev, port->read_urb->pipe);
723
724 if (tty)
725 ti_set_termios(tty, port, &tty->termios);
726
727 status = ti_command_out_sync(tdev, TI_OPEN_PORT,
728 (__u8)(TI_UART1_PORT + port_number), open_settings, NULL, 0);
729 if (status) {
730 dev_err(&port->dev, "%s - cannot send open command (2), %d\n",
731 __func__, status);
732 goto unlink_int_urb;
733 }
734
735 status = ti_command_out_sync(tdev, TI_START_PORT,
736 (__u8)(TI_UART1_PORT + port_number), 0, NULL, 0);
737 if (status) {
738 dev_err(&port->dev, "%s - cannot send start command (2), %d\n",
739 __func__, status);
740 goto unlink_int_urb;
741 }
742
743 /* start read urb */
744 urb = port->read_urb;
745 if (!urb) {
746 dev_err(&port->dev, "%s - no read urb\n", __func__);
747 status = -EINVAL;
748 goto unlink_int_urb;
749 }
750 tport->tp_read_urb_state = TI_READ_URB_RUNNING;
751 urb->context = tport;
752 status = usb_submit_urb(urb, GFP_KERNEL);
753 if (status) {
754 dev_err(&port->dev, "%s - submit read urb failed, %d\n",
755 __func__, status);
756 goto unlink_int_urb;
757 }
758
759 tport->tp_is_open = 1;
760 ++tdev->td_open_port_count;
761
762 goto release_lock;
763
764unlink_int_urb:
765 if (tdev->td_open_port_count == 0)
766 usb_kill_urb(port->serial->port[0]->interrupt_in_urb);
767release_lock:
768 mutex_unlock(&tdev->td_open_close_lock);
769 return status;
770}
771
772
773static void ti_close(struct usb_serial_port *port)
774{
775 struct ti_device *tdev;
776 struct ti_port *tport;
777 int port_number;
778 int status;
779 unsigned long flags;
780
781 tdev = usb_get_serial_data(port->serial);
782 tport = usb_get_serial_port_data(port);
783
784 tport->tp_is_open = 0;
785
786 usb_kill_urb(port->read_urb);
787 usb_kill_urb(port->write_urb);
788 tport->tp_write_urb_in_use = 0;
789 spin_lock_irqsave(&tport->tp_lock, flags);
790 kfifo_reset_out(&port->write_fifo);
791 spin_unlock_irqrestore(&tport->tp_lock, flags);
792
793 port_number = port->port_number;
794
795 status = ti_command_out_sync(tdev, TI_CLOSE_PORT,
796 (__u8)(TI_UART1_PORT + port_number), 0, NULL, 0);
797 if (status)
798 dev_err(&port->dev,
799 "%s - cannot send close port command, %d\n"
800 , __func__, status);
801
802 mutex_lock(&tdev->td_open_close_lock);
803 --tdev->td_open_port_count;
804 if (tdev->td_open_port_count == 0) {
805 /* last port is closed, shut down interrupt urb */
806 usb_kill_urb(port->serial->port[0]->interrupt_in_urb);
807 }
808 mutex_unlock(&tdev->td_open_close_lock);
809}
810
811
812static int ti_write(struct tty_struct *tty, struct usb_serial_port *port,
813 const unsigned char *data, int count)
814{
815 struct ti_port *tport = usb_get_serial_port_data(port);
816
817 if (count == 0) {
818 return 0;
819 }
820
821 if (!tport->tp_is_open)
822 return -ENODEV;
823
824 count = kfifo_in_locked(&port->write_fifo, data, count,
825 &tport->tp_lock);
826 ti_send(tport);
827
828 return count;
829}
830
831
832static int ti_write_room(struct tty_struct *tty)
833{
834 struct usb_serial_port *port = tty->driver_data;
835 struct ti_port *tport = usb_get_serial_port_data(port);
836 int room = 0;
837 unsigned long flags;
838
839 spin_lock_irqsave(&tport->tp_lock, flags);
840 room = kfifo_avail(&port->write_fifo);
841 spin_unlock_irqrestore(&tport->tp_lock, flags);
842
843 dev_dbg(&port->dev, "%s - returns %d\n", __func__, room);
844 return room;
845}
846
847
848static int ti_chars_in_buffer(struct tty_struct *tty)
849{
850 struct usb_serial_port *port = tty->driver_data;
851 struct ti_port *tport = usb_get_serial_port_data(port);
852 int chars = 0;
853 unsigned long flags;
854
855 spin_lock_irqsave(&tport->tp_lock, flags);
856 chars = kfifo_len(&port->write_fifo);
857 spin_unlock_irqrestore(&tport->tp_lock, flags);
858
859 dev_dbg(&port->dev, "%s - returns %d\n", __func__, chars);
860 return chars;
861}
862
863static bool ti_tx_empty(struct usb_serial_port *port)
864{
865 struct ti_port *tport = usb_get_serial_port_data(port);
866 int ret;
867 u8 lsr;
868
869 ret = ti_get_lsr(tport, &lsr);
870 if (!ret && !(lsr & TI_LSR_TX_EMPTY))
871 return false;
872
873 return true;
874}
875
876static void ti_throttle(struct tty_struct *tty)
877{
878 struct usb_serial_port *port = tty->driver_data;
879 struct ti_port *tport = usb_get_serial_port_data(port);
880
881 if (I_IXOFF(tty) || C_CRTSCTS(tty))
882 ti_stop_read(tport, tty);
883
884}
885
886
887static void ti_unthrottle(struct tty_struct *tty)
888{
889 struct usb_serial_port *port = tty->driver_data;
890 struct ti_port *tport = usb_get_serial_port_data(port);
891 int status;
892
893 if (I_IXOFF(tty) || C_CRTSCTS(tty)) {
894 status = ti_restart_read(tport, tty);
895 if (status)
896 dev_err(&port->dev, "%s - cannot restart read, %d\n",
897 __func__, status);
898 }
899}
900
901static void ti_set_termios(struct tty_struct *tty,
902 struct usb_serial_port *port, struct ktermios *old_termios)
903{
904 struct ti_port *tport = usb_get_serial_port_data(port);
905 struct ti_uart_config *config;
906 int baud;
907 int status;
908 int port_number = port->port_number;
909 unsigned int mcr;
910 u16 wbaudrate;
911 u16 wflags = 0;
912
913 config = kmalloc(sizeof(*config), GFP_KERNEL);
914 if (!config)
915 return;
916
917 /* these flags must be set */
918 wflags |= TI_UART_ENABLE_MS_INTS;
919 wflags |= TI_UART_ENABLE_AUTO_START_DMA;
920 config->bUartMode = tport->tp_uart_mode;
921
922 switch (C_CSIZE(tty)) {
923 case CS5:
924 config->bDataBits = TI_UART_5_DATA_BITS;
925 break;
926 case CS6:
927 config->bDataBits = TI_UART_6_DATA_BITS;
928 break;
929 case CS7:
930 config->bDataBits = TI_UART_7_DATA_BITS;
931 break;
932 default:
933 case CS8:
934 config->bDataBits = TI_UART_8_DATA_BITS;
935 break;
936 }
937
938 /* CMSPAR isn't supported by this driver */
939 tty->termios.c_cflag &= ~CMSPAR;
940
941 if (C_PARENB(tty)) {
942 if (C_PARODD(tty)) {
943 wflags |= TI_UART_ENABLE_PARITY_CHECKING;
944 config->bParity = TI_UART_ODD_PARITY;
945 } else {
946 wflags |= TI_UART_ENABLE_PARITY_CHECKING;
947 config->bParity = TI_UART_EVEN_PARITY;
948 }
949 } else {
950 wflags &= ~TI_UART_ENABLE_PARITY_CHECKING;
951 config->bParity = TI_UART_NO_PARITY;
952 }
953
954 if (C_CSTOPB(tty))
955 config->bStopBits = TI_UART_2_STOP_BITS;
956 else
957 config->bStopBits = TI_UART_1_STOP_BITS;
958
959 if (C_CRTSCTS(tty)) {
960 /* RTS flow control must be off to drop RTS for baud rate B0 */
961 if ((C_BAUD(tty)) != B0)
962 wflags |= TI_UART_ENABLE_RTS_IN;
963 wflags |= TI_UART_ENABLE_CTS_OUT;
964 } else {
965 ti_restart_read(tport, tty);
966 }
967
968 if (I_IXOFF(tty) || I_IXON(tty)) {
969 config->cXon = START_CHAR(tty);
970 config->cXoff = STOP_CHAR(tty);
971
972 if (I_IXOFF(tty))
973 wflags |= TI_UART_ENABLE_X_IN;
974 else
975 ti_restart_read(tport, tty);
976
977 if (I_IXON(tty))
978 wflags |= TI_UART_ENABLE_X_OUT;
979 }
980
981 baud = tty_get_baud_rate(tty);
982 if (!baud)
983 baud = 9600;
984 if (tport->tp_tdev->td_is_3410)
985 wbaudrate = (923077 + baud/2) / baud;
986 else
987 wbaudrate = (461538 + baud/2) / baud;
988
989 /* FIXME: Should calculate resulting baud here and report it back */
990 if ((C_BAUD(tty)) != B0)
991 tty_encode_baud_rate(tty, baud, baud);
992
993 dev_dbg(&port->dev,
994 "%s - BaudRate=%d, wBaudRate=%d, wFlags=0x%04X, bDataBits=%d, bParity=%d, bStopBits=%d, cXon=%d, cXoff=%d, bUartMode=%d\n",
995 __func__, baud, wbaudrate, wflags,
996 config->bDataBits, config->bParity, config->bStopBits,
997 config->cXon, config->cXoff, config->bUartMode);
998
999 config->wBaudRate = cpu_to_be16(wbaudrate);
1000 config->wFlags = cpu_to_be16(wflags);
1001
1002 status = ti_command_out_sync(tport->tp_tdev, TI_SET_CONFIG,
1003 (__u8)(TI_UART1_PORT + port_number), 0, (__u8 *)config,
1004 sizeof(*config));
1005 if (status)
1006 dev_err(&port->dev, "%s - cannot set config on port %d, %d\n",
1007 __func__, port_number, status);
1008
1009 /* SET_CONFIG asserts RTS and DTR, reset them correctly */
1010 mcr = tport->tp_shadow_mcr;
1011 /* if baud rate is B0, clear RTS and DTR */
1012 if (C_BAUD(tty) == B0)
1013 mcr &= ~(TI_MCR_DTR | TI_MCR_RTS);
1014 status = ti_set_mcr(tport, mcr);
1015 if (status)
1016 dev_err(&port->dev,
1017 "%s - cannot set modem control on port %d, %d\n",
1018 __func__, port_number, status);
1019
1020 kfree(config);
1021}
1022
1023
1024static int ti_tiocmget(struct tty_struct *tty)
1025{
1026 struct usb_serial_port *port = tty->driver_data;
1027 struct ti_port *tport = usb_get_serial_port_data(port);
1028 unsigned int result;
1029 unsigned int msr;
1030 unsigned int mcr;
1031 unsigned long flags;
1032
1033 spin_lock_irqsave(&tport->tp_lock, flags);
1034 msr = tport->tp_msr;
1035 mcr = tport->tp_shadow_mcr;
1036 spin_unlock_irqrestore(&tport->tp_lock, flags);
1037
1038 result = ((mcr & TI_MCR_DTR) ? TIOCM_DTR : 0)
1039 | ((mcr & TI_MCR_RTS) ? TIOCM_RTS : 0)
1040 | ((mcr & TI_MCR_LOOP) ? TIOCM_LOOP : 0)
1041 | ((msr & TI_MSR_CTS) ? TIOCM_CTS : 0)
1042 | ((msr & TI_MSR_CD) ? TIOCM_CAR : 0)
1043 | ((msr & TI_MSR_RI) ? TIOCM_RI : 0)
1044 | ((msr & TI_MSR_DSR) ? TIOCM_DSR : 0);
1045
1046 dev_dbg(&port->dev, "%s - 0x%04X\n", __func__, result);
1047
1048 return result;
1049}
1050
1051
1052static int ti_tiocmset(struct tty_struct *tty,
1053 unsigned int set, unsigned int clear)
1054{
1055 struct usb_serial_port *port = tty->driver_data;
1056 struct ti_port *tport = usb_get_serial_port_data(port);
1057 unsigned int mcr;
1058 unsigned long flags;
1059
1060 spin_lock_irqsave(&tport->tp_lock, flags);
1061 mcr = tport->tp_shadow_mcr;
1062
1063 if (set & TIOCM_RTS)
1064 mcr |= TI_MCR_RTS;
1065 if (set & TIOCM_DTR)
1066 mcr |= TI_MCR_DTR;
1067 if (set & TIOCM_LOOP)
1068 mcr |= TI_MCR_LOOP;
1069
1070 if (clear & TIOCM_RTS)
1071 mcr &= ~TI_MCR_RTS;
1072 if (clear & TIOCM_DTR)
1073 mcr &= ~TI_MCR_DTR;
1074 if (clear & TIOCM_LOOP)
1075 mcr &= ~TI_MCR_LOOP;
1076 spin_unlock_irqrestore(&tport->tp_lock, flags);
1077
1078 return ti_set_mcr(tport, mcr);
1079}
1080
1081
1082static void ti_break(struct tty_struct *tty, int break_state)
1083{
1084 struct usb_serial_port *port = tty->driver_data;
1085 struct ti_port *tport = usb_get_serial_port_data(port);
1086 int status;
1087
1088 dev_dbg(&port->dev, "%s - state = %d\n", __func__, break_state);
1089
1090 status = ti_write_byte(port, tport->tp_tdev,
1091 tport->tp_uart_base_addr + TI_UART_OFFSET_LCR,
1092 TI_LCR_BREAK, break_state == -1 ? TI_LCR_BREAK : 0);
1093
1094 if (status)
1095 dev_dbg(&port->dev, "%s - error setting break, %d\n", __func__, status);
1096}
1097
1098static int ti_get_port_from_code(unsigned char code)
1099{
1100 return (code >> 6) & 0x01;
1101}
1102
1103static int ti_get_func_from_code(unsigned char code)
1104{
1105 return code & 0x0f;
1106}
1107
1108static void ti_interrupt_callback(struct urb *urb)
1109{
1110 struct ti_device *tdev = urb->context;
1111 struct usb_serial_port *port;
1112 struct usb_serial *serial = tdev->td_serial;
1113 struct ti_port *tport;
1114 struct device *dev = &urb->dev->dev;
1115 unsigned char *data = urb->transfer_buffer;
1116 int length = urb->actual_length;
1117 int port_number;
1118 int function;
1119 int status = urb->status;
1120 int retval;
1121 u8 msr;
1122
1123 switch (status) {
1124 case 0:
1125 break;
1126 case -ECONNRESET:
1127 case -ENOENT:
1128 case -ESHUTDOWN:
1129 dev_dbg(dev, "%s - urb shutting down, %d\n", __func__, status);
1130 return;
1131 default:
1132 dev_err(dev, "%s - nonzero urb status, %d\n", __func__, status);
1133 goto exit;
1134 }
1135
1136 if (length != 2) {
1137 dev_dbg(dev, "%s - bad packet size, %d\n", __func__, length);
1138 goto exit;
1139 }
1140
1141 if (data[0] == TI_CODE_HARDWARE_ERROR) {
1142 dev_err(dev, "%s - hardware error, %d\n", __func__, data[1]);
1143 goto exit;
1144 }
1145
1146 port_number = ti_get_port_from_code(data[0]);
1147 function = ti_get_func_from_code(data[0]);
1148
1149 dev_dbg(dev, "%s - port_number %d, function %d, data 0x%02X\n",
1150 __func__, port_number, function, data[1]);
1151
1152 if (port_number >= serial->num_ports) {
1153 dev_err(dev, "%s - bad port number, %d\n",
1154 __func__, port_number);
1155 goto exit;
1156 }
1157
1158 port = serial->port[port_number];
1159
1160 tport = usb_get_serial_port_data(port);
1161 if (!tport)
1162 goto exit;
1163
1164 switch (function) {
1165 case TI_CODE_DATA_ERROR:
1166 dev_err(dev, "%s - DATA ERROR, port %d, data 0x%02X\n",
1167 __func__, port_number, data[1]);
1168 break;
1169
1170 case TI_CODE_MODEM_STATUS:
1171 msr = data[1];
1172 dev_dbg(dev, "%s - port %d, msr 0x%02X\n", __func__, port_number, msr);
1173 ti_handle_new_msr(tport, msr);
1174 break;
1175
1176 default:
1177 dev_err(dev, "%s - unknown interrupt code, 0x%02X\n",
1178 __func__, data[1]);
1179 break;
1180 }
1181
1182exit:
1183 retval = usb_submit_urb(urb, GFP_ATOMIC);
1184 if (retval)
1185 dev_err(dev, "%s - resubmit interrupt urb failed, %d\n",
1186 __func__, retval);
1187}
1188
1189
1190static void ti_bulk_in_callback(struct urb *urb)
1191{
1192 struct ti_port *tport = urb->context;
1193 struct usb_serial_port *port = tport->tp_port;
1194 struct device *dev = &urb->dev->dev;
1195 int status = urb->status;
1196 unsigned long flags;
1197 int retval = 0;
1198
1199 switch (status) {
1200 case 0:
1201 break;
1202 case -ECONNRESET:
1203 case -ENOENT:
1204 case -ESHUTDOWN:
1205 dev_dbg(dev, "%s - urb shutting down, %d\n", __func__, status);
1206 return;
1207 default:
1208 dev_err(dev, "%s - nonzero urb status, %d\n",
1209 __func__, status);
1210 }
1211
1212 if (status == -EPIPE)
1213 goto exit;
1214
1215 if (status) {
1216 dev_err(dev, "%s - stopping read!\n", __func__);
1217 return;
1218 }
1219
1220 if (urb->actual_length) {
1221 usb_serial_debug_data(dev, __func__, urb->actual_length,
1222 urb->transfer_buffer);
1223
1224 if (!tport->tp_is_open)
1225 dev_dbg(dev, "%s - port closed, dropping data\n",
1226 __func__);
1227 else
1228 ti_recv(port, urb->transfer_buffer, urb->actual_length);
1229 spin_lock_irqsave(&tport->tp_lock, flags);
1230 port->icount.rx += urb->actual_length;
1231 spin_unlock_irqrestore(&tport->tp_lock, flags);
1232 }
1233
1234exit:
1235 /* continue to read unless stopping */
1236 spin_lock_irqsave(&tport->tp_lock, flags);
1237 if (tport->tp_read_urb_state == TI_READ_URB_RUNNING)
1238 retval = usb_submit_urb(urb, GFP_ATOMIC);
1239 else if (tport->tp_read_urb_state == TI_READ_URB_STOPPING)
1240 tport->tp_read_urb_state = TI_READ_URB_STOPPED;
1241
1242 spin_unlock_irqrestore(&tport->tp_lock, flags);
1243 if (retval)
1244 dev_err(dev, "%s - resubmit read urb failed, %d\n",
1245 __func__, retval);
1246}
1247
1248
1249static void ti_bulk_out_callback(struct urb *urb)
1250{
1251 struct ti_port *tport = urb->context;
1252 struct usb_serial_port *port = tport->tp_port;
1253 int status = urb->status;
1254
1255 tport->tp_write_urb_in_use = 0;
1256
1257 switch (status) {
1258 case 0:
1259 break;
1260 case -ECONNRESET:
1261 case -ENOENT:
1262 case -ESHUTDOWN:
1263 dev_dbg(&port->dev, "%s - urb shutting down, %d\n", __func__, status);
1264 return;
1265 default:
1266 dev_err_console(port, "%s - nonzero urb status, %d\n",
1267 __func__, status);
1268 }
1269
1270 /* send any buffered data */
1271 ti_send(tport);
1272}
1273
1274
1275static void ti_recv(struct usb_serial_port *port, unsigned char *data,
1276 int length)
1277{
1278 int cnt;
1279
1280 do {
1281 cnt = tty_insert_flip_string(&port->port, data, length);
1282 if (cnt < length) {
1283 dev_err(&port->dev, "%s - dropping data, %d bytes lost\n",
1284 __func__, length - cnt);
1285 if (cnt == 0)
1286 break;
1287 }
1288 tty_flip_buffer_push(&port->port);
1289 data += cnt;
1290 length -= cnt;
1291 } while (length > 0);
1292}
1293
1294
1295static void ti_send(struct ti_port *tport)
1296{
1297 int count, result;
1298 struct usb_serial_port *port = tport->tp_port;
1299 unsigned long flags;
1300
1301 spin_lock_irqsave(&tport->tp_lock, flags);
1302
1303 if (tport->tp_write_urb_in_use)
1304 goto unlock;
1305
1306 count = kfifo_out(&port->write_fifo,
1307 port->write_urb->transfer_buffer,
1308 port->bulk_out_size);
1309
1310 if (count == 0)
1311 goto unlock;
1312
1313 tport->tp_write_urb_in_use = 1;
1314
1315 spin_unlock_irqrestore(&tport->tp_lock, flags);
1316
1317 usb_serial_debug_data(&port->dev, __func__, count,
1318 port->write_urb->transfer_buffer);
1319
1320 usb_fill_bulk_urb(port->write_urb, port->serial->dev,
1321 usb_sndbulkpipe(port->serial->dev,
1322 port->bulk_out_endpointAddress),
1323 port->write_urb->transfer_buffer, count,
1324 ti_bulk_out_callback, tport);
1325
1326 result = usb_submit_urb(port->write_urb, GFP_ATOMIC);
1327 if (result) {
1328 dev_err_console(port, "%s - submit write urb failed, %d\n",
1329 __func__, result);
1330 tport->tp_write_urb_in_use = 0;
1331 /* TODO: reschedule ti_send */
1332 } else {
1333 spin_lock_irqsave(&tport->tp_lock, flags);
1334 port->icount.tx += count;
1335 spin_unlock_irqrestore(&tport->tp_lock, flags);
1336 }
1337
1338 /* more room in the buffer for new writes, wakeup */
1339 tty_port_tty_wakeup(&port->port);
1340
1341 return;
1342unlock:
1343 spin_unlock_irqrestore(&tport->tp_lock, flags);
1344 return;
1345}
1346
1347
1348static int ti_set_mcr(struct ti_port *tport, unsigned int mcr)
1349{
1350 unsigned long flags;
1351 int status;
1352
1353 status = ti_write_byte(tport->tp_port, tport->tp_tdev,
1354 tport->tp_uart_base_addr + TI_UART_OFFSET_MCR,
1355 TI_MCR_RTS | TI_MCR_DTR | TI_MCR_LOOP, mcr);
1356
1357 spin_lock_irqsave(&tport->tp_lock, flags);
1358 if (!status)
1359 tport->tp_shadow_mcr = mcr;
1360 spin_unlock_irqrestore(&tport->tp_lock, flags);
1361
1362 return status;
1363}
1364
1365
1366static int ti_get_lsr(struct ti_port *tport, u8 *lsr)
1367{
1368 int size, status;
1369 struct ti_device *tdev = tport->tp_tdev;
1370 struct usb_serial_port *port = tport->tp_port;
1371 int port_number = port->port_number;
1372 struct ti_port_status *data;
1373
1374 size = sizeof(struct ti_port_status);
1375 data = kmalloc(size, GFP_KERNEL);
1376 if (!data)
1377 return -ENOMEM;
1378
1379 status = ti_command_in_sync(tdev, TI_GET_PORT_STATUS,
1380 (__u8)(TI_UART1_PORT+port_number), 0, (__u8 *)data, size);
1381 if (status) {
1382 dev_err(&port->dev,
1383 "%s - get port status command failed, %d\n",
1384 __func__, status);
1385 goto free_data;
1386 }
1387
1388 dev_dbg(&port->dev, "%s - lsr 0x%02X\n", __func__, data->bLSR);
1389
1390 *lsr = data->bLSR;
1391
1392free_data:
1393 kfree(data);
1394 return status;
1395}
1396
1397
1398static int ti_get_serial_info(struct tty_struct *tty,
1399 struct serial_struct *ss)
1400{
1401 struct usb_serial_port *port = tty->driver_data;
1402 struct ti_port *tport = usb_get_serial_port_data(port);
1403 unsigned cwait;
1404
1405 cwait = port->port.closing_wait;
1406 if (cwait != ASYNC_CLOSING_WAIT_NONE)
1407 cwait = jiffies_to_msecs(cwait) / 10;
1408
1409 ss->type = PORT_16550A;
1410 ss->line = port->minor;
1411 ss->port = port->port_number;
1412 ss->xmit_fifo_size = kfifo_size(&port->write_fifo);
1413 ss->baud_base = tport->tp_tdev->td_is_3410 ? 921600 : 460800;
1414 ss->closing_wait = cwait;
1415 return 0;
1416}
1417
1418
1419static int ti_set_serial_info(struct tty_struct *tty,
1420 struct serial_struct *ss)
1421{
1422 struct usb_serial_port *port = tty->driver_data;
1423 struct ti_port *tport = usb_get_serial_port_data(port);
1424 unsigned cwait;
1425
1426 cwait = ss->closing_wait;
1427 if (cwait != ASYNC_CLOSING_WAIT_NONE)
1428 cwait = msecs_to_jiffies(10 * ss->closing_wait);
1429
1430 tport->tp_port->port.closing_wait = cwait;
1431
1432 return 0;
1433}
1434
1435
1436static void ti_handle_new_msr(struct ti_port *tport, u8 msr)
1437{
1438 struct async_icount *icount;
1439 struct tty_struct *tty;
1440 unsigned long flags;
1441
1442 dev_dbg(&tport->tp_port->dev, "%s - msr 0x%02X\n", __func__, msr);
1443
1444 if (msr & TI_MSR_DELTA_MASK) {
1445 spin_lock_irqsave(&tport->tp_lock, flags);
1446 icount = &tport->tp_port->icount;
1447 if (msr & TI_MSR_DELTA_CTS)
1448 icount->cts++;
1449 if (msr & TI_MSR_DELTA_DSR)
1450 icount->dsr++;
1451 if (msr & TI_MSR_DELTA_CD)
1452 icount->dcd++;
1453 if (msr & TI_MSR_DELTA_RI)
1454 icount->rng++;
1455 wake_up_interruptible(&tport->tp_port->port.delta_msr_wait);
1456 spin_unlock_irqrestore(&tport->tp_lock, flags);
1457 }
1458
1459 tport->tp_msr = msr & TI_MSR_MASK;
1460
1461 /* handle CTS flow control */
1462 tty = tty_port_tty_get(&tport->tp_port->port);
1463 if (tty && C_CRTSCTS(tty)) {
1464 if (msr & TI_MSR_CTS)
1465 tty_wakeup(tty);
1466 }
1467 tty_kref_put(tty);
1468}
1469
1470
1471static void ti_stop_read(struct ti_port *tport, struct tty_struct *tty)
1472{
1473 unsigned long flags;
1474
1475 spin_lock_irqsave(&tport->tp_lock, flags);
1476
1477 if (tport->tp_read_urb_state == TI_READ_URB_RUNNING)
1478 tport->tp_read_urb_state = TI_READ_URB_STOPPING;
1479
1480 spin_unlock_irqrestore(&tport->tp_lock, flags);
1481}
1482
1483
1484static int ti_restart_read(struct ti_port *tport, struct tty_struct *tty)
1485{
1486 struct urb *urb;
1487 int status = 0;
1488 unsigned long flags;
1489
1490 spin_lock_irqsave(&tport->tp_lock, flags);
1491
1492 if (tport->tp_read_urb_state == TI_READ_URB_STOPPED) {
1493 tport->tp_read_urb_state = TI_READ_URB_RUNNING;
1494 urb = tport->tp_port->read_urb;
1495 spin_unlock_irqrestore(&tport->tp_lock, flags);
1496 urb->context = tport;
1497 status = usb_submit_urb(urb, GFP_KERNEL);
1498 } else {
1499 tport->tp_read_urb_state = TI_READ_URB_RUNNING;
1500 spin_unlock_irqrestore(&tport->tp_lock, flags);
1501 }
1502
1503 return status;
1504}
1505
1506
1507static int ti_command_out_sync(struct ti_device *tdev, __u8 command,
1508 __u16 moduleid, __u16 value, __u8 *data, int size)
1509{
1510 int status;
1511
1512 status = usb_control_msg(tdev->td_serial->dev,
1513 usb_sndctrlpipe(tdev->td_serial->dev, 0), command,
1514 (USB_TYPE_VENDOR | USB_RECIP_DEVICE | USB_DIR_OUT),
1515 value, moduleid, data, size, 1000);
1516
1517 if (status < 0)
1518 return status;
1519
1520 return 0;
1521}
1522
1523
1524static int ti_command_in_sync(struct ti_device *tdev, __u8 command,
1525 __u16 moduleid, __u16 value, __u8 *data, int size)
1526{
1527 int status;
1528
1529 status = usb_control_msg(tdev->td_serial->dev,
1530 usb_rcvctrlpipe(tdev->td_serial->dev, 0), command,
1531 (USB_TYPE_VENDOR | USB_RECIP_DEVICE | USB_DIR_IN),
1532 value, moduleid, data, size, 1000);
1533
1534 if (status == size)
1535 status = 0;
1536 else if (status >= 0)
1537 status = -ECOMM;
1538
1539 return status;
1540}
1541
1542
1543static int ti_write_byte(struct usb_serial_port *port,
1544 struct ti_device *tdev, unsigned long addr,
1545 u8 mask, u8 byte)
1546{
1547 int status;
1548 unsigned int size;
1549 struct ti_write_data_bytes *data;
1550
1551 dev_dbg(&port->dev, "%s - addr 0x%08lX, mask 0x%02X, byte 0x%02X\n", __func__,
1552 addr, mask, byte);
1553
1554 size = sizeof(struct ti_write_data_bytes) + 2;
1555 data = kmalloc(size, GFP_KERNEL);
1556 if (!data)
1557 return -ENOMEM;
1558
1559 data->bAddrType = TI_RW_DATA_ADDR_XDATA;
1560 data->bDataType = TI_RW_DATA_BYTE;
1561 data->bDataCounter = 1;
1562 data->wBaseAddrHi = cpu_to_be16(addr>>16);
1563 data->wBaseAddrLo = cpu_to_be16(addr);
1564 data->bData[0] = mask;
1565 data->bData[1] = byte;
1566
1567 status = ti_command_out_sync(tdev, TI_WRITE_DATA, TI_RAM_PORT, 0,
1568 (__u8 *)data, size);
1569
1570 if (status < 0)
1571 dev_err(&port->dev, "%s - failed, %d\n", __func__, status);
1572
1573 kfree(data);
1574
1575 return status;
1576}
1577
1578static int ti_do_download(struct usb_device *dev, int pipe,
1579 u8 *buffer, int size)
1580{
1581 int pos;
1582 u8 cs = 0;
1583 int done;
1584 struct ti_firmware_header *header;
1585 int status = 0;
1586 int len;
1587
1588 for (pos = sizeof(struct ti_firmware_header); pos < size; pos++)
1589 cs = (u8)(cs + buffer[pos]);
1590
1591 header = (struct ti_firmware_header *)buffer;
1592 header->wLength = cpu_to_le16(size - sizeof(*header));
1593 header->bCheckSum = cs;
1594
1595 dev_dbg(&dev->dev, "%s - downloading firmware\n", __func__);
1596 for (pos = 0; pos < size; pos += done) {
1597 len = min(size - pos, TI_DOWNLOAD_MAX_PACKET_SIZE);
1598 status = usb_bulk_msg(dev, pipe, buffer + pos, len,
1599 &done, 1000);
1600 if (status)
1601 break;
1602 }
1603 return status;
1604}
1605
1606static int ti_download_firmware(struct ti_device *tdev)
1607{
1608 int status;
1609 int buffer_size;
1610 u8 *buffer;
1611 struct usb_device *dev = tdev->td_serial->dev;
1612 unsigned int pipe = usb_sndbulkpipe(dev,
1613 tdev->td_serial->port[0]->bulk_out_endpointAddress);
1614 const struct firmware *fw_p;
1615 char buf[32];
1616
1617 if (le16_to_cpu(dev->descriptor.idVendor) == MXU1_VENDOR_ID) {
1618 snprintf(buf,
1619 sizeof(buf),
1620 "moxa/moxa-%04x.fw",
1621 le16_to_cpu(dev->descriptor.idProduct));
1622
1623 status = request_firmware(&fw_p, buf, &dev->dev);
1624 goto check_firmware;
1625 }
1626
1627 /* try ID specific firmware first, then try generic firmware */
1628 sprintf(buf, "ti_usb-v%04x-p%04x.fw",
1629 le16_to_cpu(dev->descriptor.idVendor),
1630 le16_to_cpu(dev->descriptor.idProduct));
1631 status = request_firmware(&fw_p, buf, &dev->dev);
1632
1633 if (status != 0) {
1634 buf[0] = '\0';
1635 if (le16_to_cpu(dev->descriptor.idVendor) == MTS_VENDOR_ID) {
1636 switch (le16_to_cpu(dev->descriptor.idProduct)) {
1637 case MTS_CDMA_PRODUCT_ID:
1638 strcpy(buf, "mts_cdma.fw");
1639 break;
1640 case MTS_GSM_PRODUCT_ID:
1641 strcpy(buf, "mts_gsm.fw");
1642 break;
1643 case MTS_EDGE_PRODUCT_ID:
1644 strcpy(buf, "mts_edge.fw");
1645 break;
1646 case MTS_MT9234MU_PRODUCT_ID:
1647 strcpy(buf, "mts_mt9234mu.fw");
1648 break;
1649 case MTS_MT9234ZBA_PRODUCT_ID:
1650 strcpy(buf, "mts_mt9234zba.fw");
1651 break;
1652 case MTS_MT9234ZBAOLD_PRODUCT_ID:
1653 strcpy(buf, "mts_mt9234zba.fw");
1654 break; }
1655 }
1656 if (buf[0] == '\0') {
1657 if (tdev->td_is_3410)
1658 strcpy(buf, "ti_3410.fw");
1659 else
1660 strcpy(buf, "ti_5052.fw");
1661 }
1662 status = request_firmware(&fw_p, buf, &dev->dev);
1663 }
1664
1665check_firmware:
1666 if (status) {
1667 dev_err(&dev->dev, "%s - firmware not found\n", __func__);
1668 return -ENOENT;
1669 }
1670 if (fw_p->size > TI_FIRMWARE_BUF_SIZE) {
1671 dev_err(&dev->dev, "%s - firmware too large %zu\n", __func__, fw_p->size);
1672 release_firmware(fw_p);
1673 return -ENOENT;
1674 }
1675
1676 buffer_size = TI_FIRMWARE_BUF_SIZE + sizeof(struct ti_firmware_header);
1677 buffer = kmalloc(buffer_size, GFP_KERNEL);
1678 if (buffer) {
1679 memcpy(buffer, fw_p->data, fw_p->size);
1680 memset(buffer + fw_p->size, 0xff, buffer_size - fw_p->size);
1681 status = ti_do_download(dev, pipe, buffer, fw_p->size);
1682 kfree(buffer);
1683 } else {
1684 status = -ENOMEM;
1685 }
1686 release_firmware(fw_p);
1687 if (status) {
1688 dev_err(&dev->dev, "%s - error downloading firmware, %d\n",
1689 __func__, status);
1690 return status;
1691 }
1692
1693 dev_dbg(&dev->dev, "%s - download successful\n", __func__);
1694
1695 return 0;
1696}
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 */
181struct 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 */
193struct 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
220struct 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
229struct ti_read_data_request {
230 __u8 bAddrType;
231 __u8 bDataType;
232 __u8 bDataCounter;
233 __be16 wBaseAddrHi;
234 __be16 wBaseAddrLo;
235} __packed;
236
237struct ti_read_data_bytes {
238 __u8 bCmdCode;
239 __u8 bModuleId;
240 __u8 bErrorCode;
241 __u8 bData[0];
242} __packed;
243
244/* Interrupt struct */
245struct 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 */
259struct 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
286struct 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
299struct 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
307static int ti_startup(struct usb_serial *serial);
308static void ti_release(struct usb_serial *serial);
309static int ti_port_probe(struct usb_serial_port *port);
310static int ti_port_remove(struct usb_serial_port *port);
311static int ti_open(struct tty_struct *tty, struct usb_serial_port *port);
312static void ti_close(struct usb_serial_port *port);
313static int ti_write(struct tty_struct *tty, struct usb_serial_port *port,
314 const unsigned char *data, int count);
315static int ti_write_room(struct tty_struct *tty);
316static int ti_chars_in_buffer(struct tty_struct *tty);
317static bool ti_tx_empty(struct usb_serial_port *port);
318static void ti_throttle(struct tty_struct *tty);
319static void ti_unthrottle(struct tty_struct *tty);
320static int ti_ioctl(struct tty_struct *tty,
321 unsigned int cmd, unsigned long arg);
322static void ti_set_termios(struct tty_struct *tty,
323 struct usb_serial_port *port, struct ktermios *old_termios);
324static int ti_tiocmget(struct tty_struct *tty);
325static int ti_tiocmset(struct tty_struct *tty,
326 unsigned int set, unsigned int clear);
327static void ti_break(struct tty_struct *tty, int break_state);
328static void ti_interrupt_callback(struct urb *urb);
329static void ti_bulk_in_callback(struct urb *urb);
330static void ti_bulk_out_callback(struct urb *urb);
331
332static void ti_recv(struct usb_serial_port *port, unsigned char *data,
333 int length);
334static void ti_send(struct ti_port *tport);
335static int ti_set_mcr(struct ti_port *tport, unsigned int mcr);
336static int ti_get_lsr(struct ti_port *tport, u8 *lsr);
337static int ti_get_serial_info(struct ti_port *tport,
338 struct serial_struct __user *ret_arg);
339static int ti_set_serial_info(struct tty_struct *tty, struct ti_port *tport,
340 struct serial_struct __user *new_arg);
341static void ti_handle_new_msr(struct ti_port *tport, u8 msr);
342
343static void ti_stop_read(struct ti_port *tport, struct tty_struct *tty);
344static int ti_restart_read(struct ti_port *tport, struct tty_struct *tty);
345
346static int ti_command_out_sync(struct ti_device *tdev, __u8 command,
347 __u16 moduleid, __u16 value, __u8 *data, int size);
348static int ti_command_in_sync(struct ti_device *tdev, __u8 command,
349 __u16 moduleid, __u16 value, __u8 *data, int size);
350
351static int ti_write_byte(struct usb_serial_port *port, struct ti_device *tdev,
352 unsigned long addr, u8 mask, u8 byte);
353
354static int ti_download_firmware(struct ti_device *tdev);
355
356static int closing_wait = TI_DEFAULT_CLOSING_WAIT;
357
358static 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
384static 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
392static 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
422static 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
454static 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
486static struct usb_serial_driver * const serial_drivers[] = {
487 &ti_1port_device, &ti_2port_device, NULL
488};
489
490MODULE_AUTHOR(TI_DRIVER_AUTHOR);
491MODULE_DESCRIPTION(TI_DRIVER_DESC);
492MODULE_LICENSE("GPL");
493
494MODULE_FIRMWARE("ti_3410.fw");
495MODULE_FIRMWARE("ti_5052.fw");
496MODULE_FIRMWARE("mts_cdma.fw");
497MODULE_FIRMWARE("mts_gsm.fw");
498MODULE_FIRMWARE("mts_edge.fw");
499MODULE_FIRMWARE("mts_mt9234mu.fw");
500MODULE_FIRMWARE("mts_mt9234zba.fw");
501MODULE_FIRMWARE("moxa/moxa-1110.fw");
502MODULE_FIRMWARE("moxa/moxa-1130.fw");
503MODULE_FIRMWARE("moxa/moxa-1131.fw");
504MODULE_FIRMWARE("moxa/moxa-1150.fw");
505MODULE_FIRMWARE("moxa/moxa-1151.fw");
506
507module_param(closing_wait, int, S_IRUGO | S_IWUSR);
508MODULE_PARM_DESC(closing_wait,
509 "Maximum wait for data to drain in close, in .01 secs, default is 4000");
510
511MODULE_DEVICE_TABLE(usb, ti_id_table_combined);
512
513module_usb_serial_driver(serial_drivers, ti_id_table_combined);
514
515static 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
591free_tdev:
592 kfree(tdev);
593 usb_set_serial_data(serial, NULL);
594 return status;
595}
596
597
598static void ti_release(struct usb_serial *serial)
599{
600 struct ti_device *tdev = usb_get_serial_data(serial);
601
602 kfree(tdev);
603}
604
605static 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
634static 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
644static 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
766unlink_int_urb:
767 if (tdev->td_open_port_count == 0)
768 usb_kill_urb(port->serial->port[0]->interrupt_in_urb);
769release_lock:
770 mutex_unlock(&tdev->td_open_close_lock);
771 return status;
772}
773
774
775static 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
818static 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
838static 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
854static 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
869static 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
882static 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
893static 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
907static 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
925static 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
1056static 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
1084static 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
1114static 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
1130static int ti_get_port_from_code(unsigned char code)
1131{
1132 return (code >> 4) - 3;
1133}
1134
1135static int ti_get_func_from_code(unsigned char code)
1136{
1137 return code & 0x0f;
1138}
1139
1140static 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
1214exit:
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
1222static 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
1265exit:
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
1280static 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
1306static 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
1326static 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;
1373unlock:
1374 spin_unlock_irqrestore(&tport->tp_lock, flags);
1375 return;
1376}
1377
1378
1379static 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
1397static 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
1423free_data:
1424 kfree(data);
1425 return status;
1426}
1427
1428
1429static 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 cwait = port->port.closing_wait;
1437 if (cwait != ASYNC_CLOSING_WAIT_NONE)
1438 cwait = jiffies_to_msecs(cwait) / 10;
1439
1440 memset(&ret_serial, 0, sizeof(ret_serial));
1441
1442 ret_serial.type = PORT_16550A;
1443 ret_serial.line = port->minor;
1444 ret_serial.port = port->port_number;
1445 ret_serial.xmit_fifo_size = kfifo_size(&port->write_fifo);
1446 ret_serial.baud_base = tport->tp_tdev->td_is_3410 ? 921600 : 460800;
1447 ret_serial.closing_wait = cwait;
1448
1449 if (copy_to_user(ret_arg, &ret_serial, sizeof(*ret_arg)))
1450 return -EFAULT;
1451
1452 return 0;
1453}
1454
1455
1456static int ti_set_serial_info(struct tty_struct *tty, struct ti_port *tport,
1457 struct serial_struct __user *new_arg)
1458{
1459 struct serial_struct new_serial;
1460 unsigned cwait;
1461
1462 if (copy_from_user(&new_serial, new_arg, sizeof(new_serial)))
1463 return -EFAULT;
1464
1465 cwait = new_serial.closing_wait;
1466 if (cwait != ASYNC_CLOSING_WAIT_NONE)
1467 cwait = msecs_to_jiffies(10 * new_serial.closing_wait);
1468
1469 tport->tp_port->port.closing_wait = cwait;
1470
1471 return 0;
1472}
1473
1474
1475static void ti_handle_new_msr(struct ti_port *tport, u8 msr)
1476{
1477 struct async_icount *icount;
1478 struct tty_struct *tty;
1479 unsigned long flags;
1480
1481 dev_dbg(&tport->tp_port->dev, "%s - msr 0x%02X\n", __func__, msr);
1482
1483 if (msr & TI_MSR_DELTA_MASK) {
1484 spin_lock_irqsave(&tport->tp_lock, flags);
1485 icount = &tport->tp_port->icount;
1486 if (msr & TI_MSR_DELTA_CTS)
1487 icount->cts++;
1488 if (msr & TI_MSR_DELTA_DSR)
1489 icount->dsr++;
1490 if (msr & TI_MSR_DELTA_CD)
1491 icount->dcd++;
1492 if (msr & TI_MSR_DELTA_RI)
1493 icount->rng++;
1494 wake_up_interruptible(&tport->tp_port->port.delta_msr_wait);
1495 spin_unlock_irqrestore(&tport->tp_lock, flags);
1496 }
1497
1498 tport->tp_msr = msr & TI_MSR_MASK;
1499
1500 /* handle CTS flow control */
1501 tty = tty_port_tty_get(&tport->tp_port->port);
1502 if (tty && C_CRTSCTS(tty)) {
1503 if (msr & TI_MSR_CTS)
1504 tty_wakeup(tty);
1505 }
1506 tty_kref_put(tty);
1507}
1508
1509
1510static void ti_stop_read(struct ti_port *tport, struct tty_struct *tty)
1511{
1512 unsigned long flags;
1513
1514 spin_lock_irqsave(&tport->tp_lock, flags);
1515
1516 if (tport->tp_read_urb_state == TI_READ_URB_RUNNING)
1517 tport->tp_read_urb_state = TI_READ_URB_STOPPING;
1518
1519 spin_unlock_irqrestore(&tport->tp_lock, flags);
1520}
1521
1522
1523static int ti_restart_read(struct ti_port *tport, struct tty_struct *tty)
1524{
1525 struct urb *urb;
1526 int status = 0;
1527 unsigned long flags;
1528
1529 spin_lock_irqsave(&tport->tp_lock, flags);
1530
1531 if (tport->tp_read_urb_state == TI_READ_URB_STOPPED) {
1532 tport->tp_read_urb_state = TI_READ_URB_RUNNING;
1533 urb = tport->tp_port->read_urb;
1534 spin_unlock_irqrestore(&tport->tp_lock, flags);
1535 urb->context = tport;
1536 status = usb_submit_urb(urb, GFP_KERNEL);
1537 } else {
1538 tport->tp_read_urb_state = TI_READ_URB_RUNNING;
1539 spin_unlock_irqrestore(&tport->tp_lock, flags);
1540 }
1541
1542 return status;
1543}
1544
1545
1546static int ti_command_out_sync(struct ti_device *tdev, __u8 command,
1547 __u16 moduleid, __u16 value, __u8 *data, int size)
1548{
1549 int status;
1550
1551 status = usb_control_msg(tdev->td_serial->dev,
1552 usb_sndctrlpipe(tdev->td_serial->dev, 0), command,
1553 (USB_TYPE_VENDOR | USB_RECIP_DEVICE | USB_DIR_OUT),
1554 value, moduleid, data, size, 1000);
1555
1556 if (status == size)
1557 status = 0;
1558
1559 if (status > 0)
1560 status = -ECOMM;
1561
1562 return status;
1563}
1564
1565
1566static 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
1579 if (status > 0)
1580 status = -ECOMM;
1581
1582 return status;
1583}
1584
1585
1586static int ti_write_byte(struct usb_serial_port *port,
1587 struct ti_device *tdev, unsigned long addr,
1588 u8 mask, u8 byte)
1589{
1590 int status;
1591 unsigned int size;
1592 struct ti_write_data_bytes *data;
1593
1594 dev_dbg(&port->dev, "%s - addr 0x%08lX, mask 0x%02X, byte 0x%02X\n", __func__,
1595 addr, mask, byte);
1596
1597 size = sizeof(struct ti_write_data_bytes) + 2;
1598 data = kmalloc(size, GFP_KERNEL);
1599 if (!data)
1600 return -ENOMEM;
1601
1602 data->bAddrType = TI_RW_DATA_ADDR_XDATA;
1603 data->bDataType = TI_RW_DATA_BYTE;
1604 data->bDataCounter = 1;
1605 data->wBaseAddrHi = cpu_to_be16(addr>>16);
1606 data->wBaseAddrLo = cpu_to_be16(addr);
1607 data->bData[0] = mask;
1608 data->bData[1] = byte;
1609
1610 status = ti_command_out_sync(tdev, TI_WRITE_DATA, TI_RAM_PORT, 0,
1611 (__u8 *)data, size);
1612
1613 if (status < 0)
1614 dev_err(&port->dev, "%s - failed, %d\n", __func__, status);
1615
1616 kfree(data);
1617
1618 return status;
1619}
1620
1621static int ti_do_download(struct usb_device *dev, int pipe,
1622 u8 *buffer, int size)
1623{
1624 int pos;
1625 u8 cs = 0;
1626 int done;
1627 struct ti_firmware_header *header;
1628 int status = 0;
1629 int len;
1630
1631 for (pos = sizeof(struct ti_firmware_header); pos < size; pos++)
1632 cs = (u8)(cs + buffer[pos]);
1633
1634 header = (struct ti_firmware_header *)buffer;
1635 header->wLength = cpu_to_le16(size - sizeof(*header));
1636 header->bCheckSum = cs;
1637
1638 dev_dbg(&dev->dev, "%s - downloading firmware\n", __func__);
1639 for (pos = 0; pos < size; pos += done) {
1640 len = min(size - pos, TI_DOWNLOAD_MAX_PACKET_SIZE);
1641 status = usb_bulk_msg(dev, pipe, buffer + pos, len,
1642 &done, 1000);
1643 if (status)
1644 break;
1645 }
1646 return status;
1647}
1648
1649static int ti_download_firmware(struct ti_device *tdev)
1650{
1651 int status;
1652 int buffer_size;
1653 u8 *buffer;
1654 struct usb_device *dev = tdev->td_serial->dev;
1655 unsigned int pipe = usb_sndbulkpipe(dev,
1656 tdev->td_serial->port[0]->bulk_out_endpointAddress);
1657 const struct firmware *fw_p;
1658 char buf[32];
1659
1660 if (le16_to_cpu(dev->descriptor.idVendor) == MXU1_VENDOR_ID) {
1661 snprintf(buf,
1662 sizeof(buf),
1663 "moxa/moxa-%04x.fw",
1664 le16_to_cpu(dev->descriptor.idProduct));
1665
1666 status = request_firmware(&fw_p, buf, &dev->dev);
1667 goto check_firmware;
1668 }
1669
1670 /* try ID specific firmware first, then try generic firmware */
1671 sprintf(buf, "ti_usb-v%04x-p%04x.fw",
1672 le16_to_cpu(dev->descriptor.idVendor),
1673 le16_to_cpu(dev->descriptor.idProduct));
1674 status = request_firmware(&fw_p, buf, &dev->dev);
1675
1676 if (status != 0) {
1677 buf[0] = '\0';
1678 if (le16_to_cpu(dev->descriptor.idVendor) == MTS_VENDOR_ID) {
1679 switch (le16_to_cpu(dev->descriptor.idProduct)) {
1680 case MTS_CDMA_PRODUCT_ID:
1681 strcpy(buf, "mts_cdma.fw");
1682 break;
1683 case MTS_GSM_PRODUCT_ID:
1684 strcpy(buf, "mts_gsm.fw");
1685 break;
1686 case MTS_EDGE_PRODUCT_ID:
1687 strcpy(buf, "mts_edge.fw");
1688 break;
1689 case MTS_MT9234MU_PRODUCT_ID:
1690 strcpy(buf, "mts_mt9234mu.fw");
1691 break;
1692 case MTS_MT9234ZBA_PRODUCT_ID:
1693 strcpy(buf, "mts_mt9234zba.fw");
1694 break;
1695 case MTS_MT9234ZBAOLD_PRODUCT_ID:
1696 strcpy(buf, "mts_mt9234zba.fw");
1697 break; }
1698 }
1699 if (buf[0] == '\0') {
1700 if (tdev->td_is_3410)
1701 strcpy(buf, "ti_3410.fw");
1702 else
1703 strcpy(buf, "ti_5052.fw");
1704 }
1705 status = request_firmware(&fw_p, buf, &dev->dev);
1706 }
1707
1708check_firmware:
1709 if (status) {
1710 dev_err(&dev->dev, "%s - firmware not found\n", __func__);
1711 return -ENOENT;
1712 }
1713 if (fw_p->size > TI_FIRMWARE_BUF_SIZE) {
1714 dev_err(&dev->dev, "%s - firmware too large %zu\n", __func__, fw_p->size);
1715 release_firmware(fw_p);
1716 return -ENOENT;
1717 }
1718
1719 buffer_size = TI_FIRMWARE_BUF_SIZE + sizeof(struct ti_firmware_header);
1720 buffer = kmalloc(buffer_size, GFP_KERNEL);
1721 if (buffer) {
1722 memcpy(buffer, fw_p->data, fw_p->size);
1723 memset(buffer + fw_p->size, 0xff, buffer_size - fw_p->size);
1724 status = ti_do_download(dev, pipe, buffer, fw_p->size);
1725 kfree(buffer);
1726 } else {
1727 status = -ENOMEM;
1728 }
1729 release_firmware(fw_p);
1730 if (status) {
1731 dev_err(&dev->dev, "%s - error downloading firmware, %d\n",
1732 __func__, status);
1733 return status;
1734 }
1735
1736 dev_dbg(&dev->dev, "%s - download successful\n", __func__);
1737
1738 return 0;
1739}