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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
38#define TI_BOOT_CONFIG 1
39#define TI_ACTIVE_CONFIG 2
40
41
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
49#define TI_5052_BOOT_PRODUCT_ID 0x5052
50#define TI_5152_BOOT_PRODUCT_ID 0x5152
51#define TI_5052_EEPROM_PRODUCT_ID 0x505A
52#define TI_5052_FIRMWARE_PRODUCT_ID 0x505F
53#define FRI2_PRODUCT_ID 0x5053
54
55
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
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
73#define HONEYWELL_VENDOR_ID 0x10ac
74#define HONEYWELL_HGI80_PRODUCT_ID 0x0102
75
76
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
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
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
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
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
130#define TI_LCR_BREAK 0x40
131
132
133#define TI_MCR_LOOP 0x04
134#define TI_MCR_DTR 0x10
135#define TI_MCR_RTS 0x20
136
137
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
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
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
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
170#define TI_UART_232 0x00
171#define TI_UART_485_RECEIVER_DISABLED 0x01
172#define TI_UART_485_RECEIVER_ENABLED 0x02
173
174
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
181struct ti_uart_config {
182 __u16 wBaudRate;
183 __u16 wFlags;
184 __u8 bDataBits;
185 __u8 bParity;
186 __u8 bStopBits;
187 char cXon;
188 char cXoff;
189 __u8 bUartMode;
190} __packed;
191
192
193struct ti_port_status {
194 __u8 bCmdCode;
195 __u8 bModuleId;
196 __u8 bErrorCode;
197 __u8 bMSR;
198 __u8 bLSR;
199} __packed;
200
201
202#define TI_PURGE_OUTPUT 0x00
203#define TI_PURGE_INPUT 0x80
204
205
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
245struct ti_interrupt {
246 __u8 bICode;
247 __u8 bIInfo;
248} __packed;
249
250
251#define TI_CODE_HARDWARE_ERROR 0xFF
252#define TI_CODE_DATA_ERROR 0x03
253#define TI_CODE_MODEM_STATUS 0x04
254
255
256#define TI_DOWNLOAD_MAX_PACKET_SIZE 64
257
258
259struct ti_firmware_header {
260 __le16 wLength;
261 __u8 bCheckSum;
262} __packed;
263
264
265#define TI_UART1_BASE_ADDR 0xFFA0
266#define TI_UART2_BASE_ADDR 0xFFB0
267#define TI_UART_OFFSET_LCR 0x0002
268#define TI_UART_OFFSET_MCR 0x0004
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
278
279
280#define TI_SET_SERIAL_FLAGS 0
281
282
283#define TI_READ_URB_RUNNING 0
284#define TI_READ_URB_STOPPING 1
285#define TI_READ_URB_STOPPED 2
286
287#define TI_EXTRA_VID_PID_COUNT 5
288
289struct ti_port {
290 int tp_is_open;
291 __u8 tp_msr;
292 __u8 tp_shadow_mcr;
293 __u8 tp_uart_mode;
294 unsigned int tp_uart_base_addr;
295 int tp_flags;
296 struct ti_device *tp_tdev;
297 struct usb_serial_port *tp_port;
298 spinlock_t tp_lock;
299 int tp_read_urb_state;
300 int tp_write_urb_in_use;
301};
302
303struct ti_device {
304 struct mutex td_open_close_lock;
305 int td_open_port_count;
306 struct usb_serial *td_serial;
307 int td_is_3410;
308 bool td_rs485_only;
309 int td_urb_error;
310};
311
312static int ti_startup(struct usb_serial *serial);
313static void ti_release(struct usb_serial *serial);
314static int ti_port_probe(struct usb_serial_port *port);
315static int ti_port_remove(struct usb_serial_port *port);
316static int ti_open(struct tty_struct *tty, struct usb_serial_port *port);
317static void ti_close(struct usb_serial_port *port);
318static int ti_write(struct tty_struct *tty, struct usb_serial_port *port,
319 const unsigned char *data, int count);
320static int ti_write_room(struct tty_struct *tty);
321static int ti_chars_in_buffer(struct tty_struct *tty);
322static bool ti_tx_empty(struct usb_serial_port *port);
323static void ti_throttle(struct tty_struct *tty);
324static void ti_unthrottle(struct tty_struct *tty);
325static int ti_ioctl(struct tty_struct *tty,
326 unsigned int cmd, unsigned long arg);
327static void ti_set_termios(struct tty_struct *tty,
328 struct usb_serial_port *port, struct ktermios *old_termios);
329static int ti_tiocmget(struct tty_struct *tty);
330static int ti_tiocmset(struct tty_struct *tty,
331 unsigned int set, unsigned int clear);
332static void ti_break(struct tty_struct *tty, int break_state);
333static void ti_interrupt_callback(struct urb *urb);
334static void ti_bulk_in_callback(struct urb *urb);
335static void ti_bulk_out_callback(struct urb *urb);
336
337static void ti_recv(struct usb_serial_port *port, unsigned char *data,
338 int length);
339static void ti_send(struct ti_port *tport);
340static int ti_set_mcr(struct ti_port *tport, unsigned int mcr);
341static int ti_get_lsr(struct ti_port *tport, u8 *lsr);
342static int ti_get_serial_info(struct ti_port *tport,
343 struct serial_struct __user *ret_arg);
344static int ti_set_serial_info(struct tty_struct *tty, struct ti_port *tport,
345 struct serial_struct __user *new_arg);
346static void ti_handle_new_msr(struct ti_port *tport, __u8 msr);
347
348static void ti_stop_read(struct ti_port *tport, struct tty_struct *tty);
349static int ti_restart_read(struct ti_port *tport, struct tty_struct *tty);
350
351static int ti_command_out_sync(struct ti_device *tdev, __u8 command,
352 __u16 moduleid, __u16 value, __u8 *data, int size);
353static int ti_command_in_sync(struct ti_device *tdev, __u8 command,
354 __u16 moduleid, __u16 value, __u8 *data, int size);
355
356static int ti_write_byte(struct usb_serial_port *port, struct ti_device *tdev,
357 unsigned long addr, __u8 mask, __u8 byte);
358
359static int ti_download_firmware(struct ti_device *tdev);
360
361static int closing_wait = TI_DEFAULT_CLOSING_WAIT;
362
363static const struct usb_device_id ti_id_table_3410[] = {
364 { USB_DEVICE(TI_VENDOR_ID, TI_3410_PRODUCT_ID) },
365 { USB_DEVICE(TI_VENDOR_ID, TI_3410_EZ430_ID) },
366 { USB_DEVICE(MTS_VENDOR_ID, MTS_GSM_NO_FW_PRODUCT_ID) },
367 { USB_DEVICE(MTS_VENDOR_ID, MTS_CDMA_NO_FW_PRODUCT_ID) },
368 { USB_DEVICE(MTS_VENDOR_ID, MTS_CDMA_PRODUCT_ID) },
369 { USB_DEVICE(MTS_VENDOR_ID, MTS_GSM_PRODUCT_ID) },
370 { USB_DEVICE(MTS_VENDOR_ID, MTS_EDGE_PRODUCT_ID) },
371 { USB_DEVICE(MTS_VENDOR_ID, MTS_MT9234MU_PRODUCT_ID) },
372 { USB_DEVICE(MTS_VENDOR_ID, MTS_MT9234ZBA_PRODUCT_ID) },
373 { USB_DEVICE(MTS_VENDOR_ID, MTS_MT9234ZBAOLD_PRODUCT_ID) },
374 { USB_DEVICE(IBM_VENDOR_ID, IBM_4543_PRODUCT_ID) },
375 { USB_DEVICE(IBM_VENDOR_ID, IBM_454B_PRODUCT_ID) },
376 { USB_DEVICE(IBM_VENDOR_ID, IBM_454C_PRODUCT_ID) },
377 { USB_DEVICE(ABBOTT_VENDOR_ID, ABBOTT_STEREO_PLUG_ID) },
378 { USB_DEVICE(ABBOTT_VENDOR_ID, ABBOTT_STRIP_PORT_ID) },
379 { USB_DEVICE(TI_VENDOR_ID, FRI2_PRODUCT_ID) },
380 { USB_DEVICE(HONEYWELL_VENDOR_ID, HONEYWELL_HGI80_PRODUCT_ID) },
381 { USB_DEVICE(MXU1_VENDOR_ID, MXU1_1110_PRODUCT_ID) },
382 { USB_DEVICE(MXU1_VENDOR_ID, MXU1_1130_PRODUCT_ID) },
383 { USB_DEVICE(MXU1_VENDOR_ID, MXU1_1131_PRODUCT_ID) },
384 { USB_DEVICE(MXU1_VENDOR_ID, MXU1_1150_PRODUCT_ID) },
385 { USB_DEVICE(MXU1_VENDOR_ID, MXU1_1151_PRODUCT_ID) },
386 { }
387};
388
389static const struct usb_device_id ti_id_table_5052[] = {
390 { USB_DEVICE(TI_VENDOR_ID, TI_5052_BOOT_PRODUCT_ID) },
391 { USB_DEVICE(TI_VENDOR_ID, TI_5152_BOOT_PRODUCT_ID) },
392 { USB_DEVICE(TI_VENDOR_ID, TI_5052_EEPROM_PRODUCT_ID) },
393 { USB_DEVICE(TI_VENDOR_ID, TI_5052_FIRMWARE_PRODUCT_ID) },
394 { }
395};
396
397static const struct usb_device_id ti_id_table_combined[] = {
398 { USB_DEVICE(TI_VENDOR_ID, TI_3410_PRODUCT_ID) },
399 { USB_DEVICE(TI_VENDOR_ID, TI_3410_EZ430_ID) },
400 { USB_DEVICE(MTS_VENDOR_ID, MTS_GSM_NO_FW_PRODUCT_ID) },
401 { USB_DEVICE(MTS_VENDOR_ID, MTS_CDMA_NO_FW_PRODUCT_ID) },
402 { USB_DEVICE(MTS_VENDOR_ID, MTS_CDMA_PRODUCT_ID) },
403 { USB_DEVICE(MTS_VENDOR_ID, MTS_GSM_PRODUCT_ID) },
404 { USB_DEVICE(MTS_VENDOR_ID, MTS_EDGE_PRODUCT_ID) },
405 { USB_DEVICE(MTS_VENDOR_ID, MTS_MT9234MU_PRODUCT_ID) },
406 { USB_DEVICE(MTS_VENDOR_ID, MTS_MT9234ZBA_PRODUCT_ID) },
407 { USB_DEVICE(MTS_VENDOR_ID, MTS_MT9234ZBAOLD_PRODUCT_ID) },
408 { USB_DEVICE(TI_VENDOR_ID, TI_5052_BOOT_PRODUCT_ID) },
409 { USB_DEVICE(TI_VENDOR_ID, TI_5152_BOOT_PRODUCT_ID) },
410 { USB_DEVICE(TI_VENDOR_ID, TI_5052_EEPROM_PRODUCT_ID) },
411 { USB_DEVICE(TI_VENDOR_ID, TI_5052_FIRMWARE_PRODUCT_ID) },
412 { USB_DEVICE(IBM_VENDOR_ID, IBM_4543_PRODUCT_ID) },
413 { USB_DEVICE(IBM_VENDOR_ID, IBM_454B_PRODUCT_ID) },
414 { USB_DEVICE(IBM_VENDOR_ID, IBM_454C_PRODUCT_ID) },
415 { USB_DEVICE(ABBOTT_VENDOR_ID, ABBOTT_PRODUCT_ID) },
416 { USB_DEVICE(ABBOTT_VENDOR_ID, ABBOTT_STRIP_PORT_ID) },
417 { USB_DEVICE(TI_VENDOR_ID, FRI2_PRODUCT_ID) },
418 { USB_DEVICE(HONEYWELL_VENDOR_ID, HONEYWELL_HGI80_PRODUCT_ID) },
419 { USB_DEVICE(MXU1_VENDOR_ID, MXU1_1110_PRODUCT_ID) },
420 { USB_DEVICE(MXU1_VENDOR_ID, MXU1_1130_PRODUCT_ID) },
421 { USB_DEVICE(MXU1_VENDOR_ID, MXU1_1131_PRODUCT_ID) },
422 { USB_DEVICE(MXU1_VENDOR_ID, MXU1_1150_PRODUCT_ID) },
423 { USB_DEVICE(MXU1_VENDOR_ID, MXU1_1151_PRODUCT_ID) },
424 { }
425};
426
427static struct usb_serial_driver ti_1port_device = {
428 .driver = {
429 .owner = THIS_MODULE,
430 .name = "ti_usb_3410_5052_1",
431 },
432 .description = "TI USB 3410 1 port adapter",
433 .id_table = ti_id_table_3410,
434 .num_ports = 1,
435 .attach = ti_startup,
436 .release = ti_release,
437 .port_probe = ti_port_probe,
438 .port_remove = ti_port_remove,
439 .open = ti_open,
440 .close = ti_close,
441 .write = ti_write,
442 .write_room = ti_write_room,
443 .chars_in_buffer = ti_chars_in_buffer,
444 .tx_empty = ti_tx_empty,
445 .throttle = ti_throttle,
446 .unthrottle = ti_unthrottle,
447 .ioctl = ti_ioctl,
448 .set_termios = ti_set_termios,
449 .tiocmget = ti_tiocmget,
450 .tiocmset = ti_tiocmset,
451 .tiocmiwait = usb_serial_generic_tiocmiwait,
452 .get_icount = usb_serial_generic_get_icount,
453 .break_ctl = ti_break,
454 .read_int_callback = ti_interrupt_callback,
455 .read_bulk_callback = ti_bulk_in_callback,
456 .write_bulk_callback = ti_bulk_out_callback,
457};
458
459static struct usb_serial_driver ti_2port_device = {
460 .driver = {
461 .owner = THIS_MODULE,
462 .name = "ti_usb_3410_5052_2",
463 },
464 .description = "TI USB 5052 2 port adapter",
465 .id_table = ti_id_table_5052,
466 .num_ports = 2,
467 .attach = ti_startup,
468 .release = ti_release,
469 .port_probe = ti_port_probe,
470 .port_remove = ti_port_remove,
471 .open = ti_open,
472 .close = ti_close,
473 .write = ti_write,
474 .write_room = ti_write_room,
475 .chars_in_buffer = ti_chars_in_buffer,
476 .tx_empty = ti_tx_empty,
477 .throttle = ti_throttle,
478 .unthrottle = ti_unthrottle,
479 .ioctl = ti_ioctl,
480 .set_termios = ti_set_termios,
481 .tiocmget = ti_tiocmget,
482 .tiocmset = ti_tiocmset,
483 .tiocmiwait = usb_serial_generic_tiocmiwait,
484 .get_icount = usb_serial_generic_get_icount,
485 .break_ctl = ti_break,
486 .read_int_callback = ti_interrupt_callback,
487 .read_bulk_callback = ti_bulk_in_callback,
488 .write_bulk_callback = ti_bulk_out_callback,
489};
490
491static struct usb_serial_driver * const serial_drivers[] = {
492 &ti_1port_device, &ti_2port_device, NULL
493};
494
495MODULE_AUTHOR(TI_DRIVER_AUTHOR);
496MODULE_DESCRIPTION(TI_DRIVER_DESC);
497MODULE_LICENSE("GPL");
498
499MODULE_FIRMWARE("ti_3410.fw");
500MODULE_FIRMWARE("ti_5052.fw");
501MODULE_FIRMWARE("mts_cdma.fw");
502MODULE_FIRMWARE("mts_gsm.fw");
503MODULE_FIRMWARE("mts_edge.fw");
504MODULE_FIRMWARE("mts_mt9234mu.fw");
505MODULE_FIRMWARE("mts_mt9234zba.fw");
506MODULE_FIRMWARE("moxa/moxa-1110.fw");
507MODULE_FIRMWARE("moxa/moxa-1130.fw");
508MODULE_FIRMWARE("moxa/moxa-1131.fw");
509MODULE_FIRMWARE("moxa/moxa-1150.fw");
510MODULE_FIRMWARE("moxa/moxa-1151.fw");
511
512module_param(closing_wait, int, S_IRUGO | S_IWUSR);
513MODULE_PARM_DESC(closing_wait,
514 "Maximum wait for data to drain in close, in .01 secs, default is 4000");
515
516MODULE_DEVICE_TABLE(usb, ti_id_table_combined);
517
518module_usb_serial_driver(serial_drivers, ti_id_table_combined);
519
520static int ti_startup(struct usb_serial *serial)
521{
522 struct ti_device *tdev;
523 struct usb_device *dev = serial->dev;
524 struct usb_host_interface *cur_altsetting;
525 int num_endpoints;
526 u16 vid, pid;
527 int status;
528
529 dev_dbg(&dev->dev,
530 "%s - product 0x%4X, num configurations %d, configuration value %d\n",
531 __func__, le16_to_cpu(dev->descriptor.idProduct),
532 dev->descriptor.bNumConfigurations,
533 dev->actconfig->desc.bConfigurationValue);
534
535 tdev = kzalloc(sizeof(struct ti_device), GFP_KERNEL);
536 if (!tdev)
537 return -ENOMEM;
538
539 mutex_init(&tdev->td_open_close_lock);
540 tdev->td_serial = serial;
541 usb_set_serial_data(serial, tdev);
542
543
544 if (serial->type == &ti_1port_device)
545 tdev->td_is_3410 = 1;
546 dev_dbg(&dev->dev, "%s - device type is %s\n", __func__,
547 tdev->td_is_3410 ? "3410" : "5052");
548
549 vid = le16_to_cpu(dev->descriptor.idVendor);
550 pid = le16_to_cpu(dev->descriptor.idProduct);
551 if (vid == MXU1_VENDOR_ID) {
552 switch (pid) {
553 case MXU1_1130_PRODUCT_ID:
554 case MXU1_1131_PRODUCT_ID:
555 tdev->td_rs485_only = true;
556 break;
557 }
558 }
559
560 cur_altsetting = serial->interface->cur_altsetting;
561 num_endpoints = cur_altsetting->desc.bNumEndpoints;
562
563
564 if (dev->descriptor.bNumConfigurations == 1 && num_endpoints == 1) {
565 status = ti_download_firmware(tdev);
566
567 if (status != 0)
568 goto free_tdev;
569
570
571 if (tdev->td_is_3410) {
572 msleep_interruptible(100);
573 usb_reset_device(dev);
574 }
575
576 status = -ENODEV;
577 goto free_tdev;
578 }
579
580
581 if (dev->actconfig->desc.bConfigurationValue == TI_BOOT_CONFIG) {
582 status = usb_driver_set_configuration(dev, TI_ACTIVE_CONFIG);
583 status = status ? 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 = (__u8)(TI_PIPE_MODE_CONTINUOUS |
651 TI_PIPE_TIMEOUT_ENABLE |
652 (TI_TRANSFER_TIMEOUT << 2));
653
654 if (tport == NULL)
655 return -ENODEV;
656
657 dev = port->serial->dev;
658 tdev = tport->tp_tdev;
659
660
661 if (mutex_lock_interruptible(&tdev->td_open_close_lock))
662 return -ERESTARTSYS;
663
664 port_number = port->port_number;
665
666 tport->tp_msr = 0;
667 tport->tp_shadow_mcr |= (TI_MCR_RTS | TI_MCR_DTR);
668
669
670 if (tdev->td_open_port_count == 0) {
671 dev_dbg(&port->dev, "%s - start interrupt in urb\n", __func__);
672 urb = tdev->td_serial->port[0]->interrupt_in_urb;
673 if (!urb) {
674 dev_err(&port->dev, "%s - no interrupt urb\n", __func__);
675 status = -EINVAL;
676 goto release_lock;
677 }
678 urb->context = tdev;
679 status = usb_submit_urb(urb, GFP_KERNEL);
680 if (status) {
681 dev_err(&port->dev, "%s - submit interrupt urb failed, %d\n", __func__, status);
682 goto release_lock;
683 }
684 }
685
686 if (tty)
687 ti_set_termios(tty, port, &tty->termios);
688
689 dev_dbg(&port->dev, "%s - sending TI_OPEN_PORT\n", __func__);
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 dev_dbg(&port->dev, "%s - sending TI_START_PORT\n", __func__);
699 status = ti_command_out_sync(tdev, TI_START_PORT,
700 (__u8)(TI_UART1_PORT + port_number), 0, NULL, 0);
701 if (status) {
702 dev_err(&port->dev, "%s - cannot send start command, %d\n",
703 __func__, status);
704 goto unlink_int_urb;
705 }
706
707 dev_dbg(&port->dev, "%s - sending TI_PURGE_PORT\n", __func__);
708 status = ti_command_out_sync(tdev, TI_PURGE_PORT,
709 (__u8)(TI_UART1_PORT + port_number), TI_PURGE_INPUT, NULL, 0);
710 if (status) {
711 dev_err(&port->dev, "%s - cannot clear input buffers, %d\n",
712 __func__, status);
713 goto unlink_int_urb;
714 }
715 status = ti_command_out_sync(tdev, TI_PURGE_PORT,
716 (__u8)(TI_UART1_PORT + port_number), TI_PURGE_OUTPUT, NULL, 0);
717 if (status) {
718 dev_err(&port->dev, "%s - cannot clear output buffers, %d\n",
719 __func__, status);
720 goto unlink_int_urb;
721 }
722
723
724
725 usb_clear_halt(dev, port->write_urb->pipe);
726 usb_clear_halt(dev, port->read_urb->pipe);
727
728 if (tty)
729 ti_set_termios(tty, port, &tty->termios);
730
731 dev_dbg(&port->dev, "%s - sending TI_OPEN_PORT (2)\n", __func__);
732 status = ti_command_out_sync(tdev, TI_OPEN_PORT,
733 (__u8)(TI_UART1_PORT + port_number), open_settings, NULL, 0);
734 if (status) {
735 dev_err(&port->dev, "%s - cannot send open command (2), %d\n",
736 __func__, status);
737 goto unlink_int_urb;
738 }
739
740 dev_dbg(&port->dev, "%s - sending TI_START_PORT (2)\n", __func__);
741 status = ti_command_out_sync(tdev, TI_START_PORT,
742 (__u8)(TI_UART1_PORT + port_number), 0, NULL, 0);
743 if (status) {
744 dev_err(&port->dev, "%s - cannot send start command (2), %d\n",
745 __func__, status);
746 goto unlink_int_urb;
747 }
748
749
750 dev_dbg(&port->dev, "%s - start read urb\n", __func__);
751 urb = port->read_urb;
752 if (!urb) {
753 dev_err(&port->dev, "%s - no read urb\n", __func__);
754 status = -EINVAL;
755 goto unlink_int_urb;
756 }
757 tport->tp_read_urb_state = TI_READ_URB_RUNNING;
758 urb->context = tport;
759 status = usb_submit_urb(urb, GFP_KERNEL);
760 if (status) {
761 dev_err(&port->dev, "%s - submit read urb failed, %d\n",
762 __func__, status);
763 goto unlink_int_urb;
764 }
765
766 tport->tp_is_open = 1;
767 ++tdev->td_open_port_count;
768
769 goto release_lock;
770
771unlink_int_urb:
772 if (tdev->td_open_port_count == 0)
773 usb_kill_urb(port->serial->port[0]->interrupt_in_urb);
774release_lock:
775 mutex_unlock(&tdev->td_open_close_lock);
776 dev_dbg(&port->dev, "%s - exit %d\n", __func__, status);
777 return status;
778}
779
780
781static void ti_close(struct usb_serial_port *port)
782{
783 struct ti_device *tdev;
784 struct ti_port *tport;
785 int port_number;
786 int status;
787 int do_unlock;
788 unsigned long flags;
789
790 tdev = usb_get_serial_data(port->serial);
791 tport = usb_get_serial_port_data(port);
792 if (tdev == NULL || tport == NULL)
793 return;
794
795 tport->tp_is_open = 0;
796
797 usb_kill_urb(port->read_urb);
798 usb_kill_urb(port->write_urb);
799 tport->tp_write_urb_in_use = 0;
800 spin_lock_irqsave(&tport->tp_lock, flags);
801 kfifo_reset_out(&port->write_fifo);
802 spin_unlock_irqrestore(&tport->tp_lock, flags);
803
804 port_number = port->port_number;
805
806 dev_dbg(&port->dev, "%s - sending TI_CLOSE_PORT\n", __func__);
807 status = ti_command_out_sync(tdev, TI_CLOSE_PORT,
808 (__u8)(TI_UART1_PORT + port_number), 0, NULL, 0);
809 if (status)
810 dev_err(&port->dev,
811 "%s - cannot send close port command, %d\n"
812 , __func__, status);
813
814
815 do_unlock = !mutex_lock_interruptible(&tdev->td_open_close_lock);
816 --tport->tp_tdev->td_open_port_count;
817 if (tport->tp_tdev->td_open_port_count <= 0) {
818
819 usb_kill_urb(port->serial->port[0]->interrupt_in_urb);
820 tport->tp_tdev->td_open_port_count = 0;
821 }
822 if (do_unlock)
823 mutex_unlock(&tdev->td_open_close_lock);
824}
825
826
827static int ti_write(struct tty_struct *tty, struct usb_serial_port *port,
828 const unsigned char *data, int count)
829{
830 struct ti_port *tport = usb_get_serial_port_data(port);
831
832 if (count == 0) {
833 dev_dbg(&port->dev, "%s - write request of 0 bytes\n", __func__);
834 return 0;
835 }
836
837 if (tport == NULL || !tport->tp_is_open)
838 return -ENODEV;
839
840 count = kfifo_in_locked(&port->write_fifo, data, count,
841 &tport->tp_lock);
842 ti_send(tport);
843
844 return count;
845}
846
847
848static int ti_write_room(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 room = 0;
853 unsigned long flags;
854
855 if (tport == NULL)
856 return 0;
857
858 spin_lock_irqsave(&tport->tp_lock, flags);
859 room = kfifo_avail(&port->write_fifo);
860 spin_unlock_irqrestore(&tport->tp_lock, flags);
861
862 dev_dbg(&port->dev, "%s - returns %d\n", __func__, room);
863 return room;
864}
865
866
867static int ti_chars_in_buffer(struct tty_struct *tty)
868{
869 struct usb_serial_port *port = tty->driver_data;
870 struct ti_port *tport = usb_get_serial_port_data(port);
871 int chars = 0;
872 unsigned long flags;
873
874 if (tport == NULL)
875 return 0;
876
877 spin_lock_irqsave(&tport->tp_lock, flags);
878 chars = kfifo_len(&port->write_fifo);
879 spin_unlock_irqrestore(&tport->tp_lock, flags);
880
881 dev_dbg(&port->dev, "%s - returns %d\n", __func__, chars);
882 return chars;
883}
884
885static bool ti_tx_empty(struct usb_serial_port *port)
886{
887 struct ti_port *tport = usb_get_serial_port_data(port);
888 int ret;
889 u8 lsr;
890
891 ret = ti_get_lsr(tport, &lsr);
892 if (!ret && !(lsr & TI_LSR_TX_EMPTY))
893 return false;
894
895 return true;
896}
897
898static void ti_throttle(struct tty_struct *tty)
899{
900 struct usb_serial_port *port = tty->driver_data;
901 struct ti_port *tport = usb_get_serial_port_data(port);
902
903 if (tport == NULL)
904 return;
905
906 if (I_IXOFF(tty) || C_CRTSCTS(tty))
907 ti_stop_read(tport, tty);
908
909}
910
911
912static void ti_unthrottle(struct tty_struct *tty)
913{
914 struct usb_serial_port *port = tty->driver_data;
915 struct ti_port *tport = usb_get_serial_port_data(port);
916 int status;
917
918 if (tport == NULL)
919 return;
920
921 if (I_IXOFF(tty) || C_CRTSCTS(tty)) {
922 status = ti_restart_read(tport, tty);
923 if (status)
924 dev_err(&port->dev, "%s - cannot restart read, %d\n",
925 __func__, status);
926 }
927}
928
929static int ti_ioctl(struct tty_struct *tty,
930 unsigned int cmd, unsigned long arg)
931{
932 struct usb_serial_port *port = tty->driver_data;
933 struct ti_port *tport = usb_get_serial_port_data(port);
934
935 if (tport == NULL)
936 return -ENODEV;
937
938 switch (cmd) {
939 case TIOCGSERIAL:
940 dev_dbg(&port->dev, "%s - TIOCGSERIAL\n", __func__);
941 return ti_get_serial_info(tport,
942 (struct serial_struct __user *)arg);
943 case TIOCSSERIAL:
944 dev_dbg(&port->dev, "%s - TIOCSSERIAL\n", __func__);
945 return ti_set_serial_info(tty, tport,
946 (struct serial_struct __user *)arg);
947 }
948 return -ENOIOCTLCMD;
949}
950
951
952static void ti_set_termios(struct tty_struct *tty,
953 struct usb_serial_port *port, struct ktermios *old_termios)
954{
955 struct ti_port *tport = usb_get_serial_port_data(port);
956 struct ti_uart_config *config;
957 tcflag_t cflag, iflag;
958 int baud;
959 int status;
960 int port_number = port->port_number;
961 unsigned int mcr;
962
963 cflag = tty->termios.c_cflag;
964 iflag = tty->termios.c_iflag;
965
966 dev_dbg(&port->dev, "%s - cflag %08x, iflag %08x\n", __func__, cflag, iflag);
967 dev_dbg(&port->dev, "%s - old clfag %08x, old iflag %08x\n", __func__,
968 old_termios->c_cflag, old_termios->c_iflag);
969
970 if (tport == NULL)
971 return;
972
973 config = kmalloc(sizeof(*config), GFP_KERNEL);
974 if (!config)
975 return;
976
977 config->wFlags = 0;
978
979
980 config->wFlags |= TI_UART_ENABLE_MS_INTS;
981 config->wFlags |= TI_UART_ENABLE_AUTO_START_DMA;
982 config->bUartMode = (__u8)(tport->tp_uart_mode);
983
984 switch (cflag & CSIZE) {
985 case CS5:
986 config->bDataBits = TI_UART_5_DATA_BITS;
987 break;
988 case CS6:
989 config->bDataBits = TI_UART_6_DATA_BITS;
990 break;
991 case CS7:
992 config->bDataBits = TI_UART_7_DATA_BITS;
993 break;
994 default:
995 case CS8:
996 config->bDataBits = TI_UART_8_DATA_BITS;
997 break;
998 }
999
1000
1001 tty->termios.c_cflag &= ~CMSPAR;
1002
1003 if (cflag & PARENB) {
1004 if (cflag & PARODD) {
1005 config->wFlags |= TI_UART_ENABLE_PARITY_CHECKING;
1006 config->bParity = TI_UART_ODD_PARITY;
1007 } else {
1008 config->wFlags |= TI_UART_ENABLE_PARITY_CHECKING;
1009 config->bParity = TI_UART_EVEN_PARITY;
1010 }
1011 } else {
1012 config->wFlags &= ~TI_UART_ENABLE_PARITY_CHECKING;
1013 config->bParity = TI_UART_NO_PARITY;
1014 }
1015
1016 if (cflag & CSTOPB)
1017 config->bStopBits = TI_UART_2_STOP_BITS;
1018 else
1019 config->bStopBits = TI_UART_1_STOP_BITS;
1020
1021 if (cflag & CRTSCTS) {
1022
1023 if ((cflag & CBAUD) != B0)
1024 config->wFlags |= TI_UART_ENABLE_RTS_IN;
1025 config->wFlags |= TI_UART_ENABLE_CTS_OUT;
1026 } else {
1027 ti_restart_read(tport, tty);
1028 }
1029
1030 if (I_IXOFF(tty) || I_IXON(tty)) {
1031 config->cXon = START_CHAR(tty);
1032 config->cXoff = STOP_CHAR(tty);
1033
1034 if (I_IXOFF(tty))
1035 config->wFlags |= TI_UART_ENABLE_X_IN;
1036 else
1037 ti_restart_read(tport, tty);
1038
1039 if (I_IXON(tty))
1040 config->wFlags |= TI_UART_ENABLE_X_OUT;
1041 }
1042
1043 baud = tty_get_baud_rate(tty);
1044 if (!baud)
1045 baud = 9600;
1046 if (tport->tp_tdev->td_is_3410)
1047 config->wBaudRate = (__u16)((923077 + baud/2) / baud);
1048 else
1049 config->wBaudRate = (__u16)((461538 + baud/2) / baud);
1050
1051
1052 if ((cflag & CBAUD) != B0)
1053 tty_encode_baud_rate(tty, baud, baud);
1054
1055 dev_dbg(&port->dev,
1056 "%s - BaudRate=%d, wBaudRate=%d, wFlags=0x%04X, bDataBits=%d, bParity=%d, bStopBits=%d, cXon=%d, cXoff=%d, bUartMode=%d\n",
1057 __func__, baud, config->wBaudRate, config->wFlags,
1058 config->bDataBits, config->bParity, config->bStopBits,
1059 config->cXon, config->cXoff, config->bUartMode);
1060
1061 cpu_to_be16s(&config->wBaudRate);
1062 cpu_to_be16s(&config->wFlags);
1063
1064 status = ti_command_out_sync(tport->tp_tdev, TI_SET_CONFIG,
1065 (__u8)(TI_UART1_PORT + port_number), 0, (__u8 *)config,
1066 sizeof(*config));
1067 if (status)
1068 dev_err(&port->dev, "%s - cannot set config on port %d, %d\n",
1069 __func__, port_number, status);
1070
1071
1072 mcr = tport->tp_shadow_mcr;
1073
1074 if ((cflag & CBAUD) == B0)
1075 mcr &= ~(TI_MCR_DTR | TI_MCR_RTS);
1076 status = ti_set_mcr(tport, mcr);
1077 if (status)
1078 dev_err(&port->dev,
1079 "%s - cannot set modem control on port %d, %d\n",
1080 __func__, port_number, status);
1081
1082 kfree(config);
1083}
1084
1085
1086static int ti_tiocmget(struct tty_struct *tty)
1087{
1088 struct usb_serial_port *port = tty->driver_data;
1089 struct ti_port *tport = usb_get_serial_port_data(port);
1090 unsigned int result;
1091 unsigned int msr;
1092 unsigned int mcr;
1093 unsigned long flags;
1094
1095 if (tport == NULL)
1096 return -ENODEV;
1097
1098 spin_lock_irqsave(&tport->tp_lock, flags);
1099 msr = tport->tp_msr;
1100 mcr = tport->tp_shadow_mcr;
1101 spin_unlock_irqrestore(&tport->tp_lock, flags);
1102
1103 result = ((mcr & TI_MCR_DTR) ? TIOCM_DTR : 0)
1104 | ((mcr & TI_MCR_RTS) ? TIOCM_RTS : 0)
1105 | ((mcr & TI_MCR_LOOP) ? TIOCM_LOOP : 0)
1106 | ((msr & TI_MSR_CTS) ? TIOCM_CTS : 0)
1107 | ((msr & TI_MSR_CD) ? TIOCM_CAR : 0)
1108 | ((msr & TI_MSR_RI) ? TIOCM_RI : 0)
1109 | ((msr & TI_MSR_DSR) ? TIOCM_DSR : 0);
1110
1111 dev_dbg(&port->dev, "%s - 0x%04X\n", __func__, result);
1112
1113 return result;
1114}
1115
1116
1117static int ti_tiocmset(struct tty_struct *tty,
1118 unsigned int set, unsigned int clear)
1119{
1120 struct usb_serial_port *port = tty->driver_data;
1121 struct ti_port *tport = usb_get_serial_port_data(port);
1122 unsigned int mcr;
1123 unsigned long flags;
1124
1125 if (tport == NULL)
1126 return -ENODEV;
1127
1128 spin_lock_irqsave(&tport->tp_lock, flags);
1129 mcr = tport->tp_shadow_mcr;
1130
1131 if (set & TIOCM_RTS)
1132 mcr |= TI_MCR_RTS;
1133 if (set & TIOCM_DTR)
1134 mcr |= TI_MCR_DTR;
1135 if (set & TIOCM_LOOP)
1136 mcr |= TI_MCR_LOOP;
1137
1138 if (clear & TIOCM_RTS)
1139 mcr &= ~TI_MCR_RTS;
1140 if (clear & TIOCM_DTR)
1141 mcr &= ~TI_MCR_DTR;
1142 if (clear & TIOCM_LOOP)
1143 mcr &= ~TI_MCR_LOOP;
1144 spin_unlock_irqrestore(&tport->tp_lock, flags);
1145
1146 return ti_set_mcr(tport, mcr);
1147}
1148
1149
1150static void ti_break(struct tty_struct *tty, int break_state)
1151{
1152 struct usb_serial_port *port = tty->driver_data;
1153 struct ti_port *tport = usb_get_serial_port_data(port);
1154 int status;
1155
1156 dev_dbg(&port->dev, "%s - state = %d\n", __func__, break_state);
1157
1158 if (tport == NULL)
1159 return;
1160
1161 status = ti_write_byte(port, tport->tp_tdev,
1162 tport->tp_uart_base_addr + TI_UART_OFFSET_LCR,
1163 TI_LCR_BREAK, break_state == -1 ? TI_LCR_BREAK : 0);
1164
1165 if (status)
1166 dev_dbg(&port->dev, "%s - error setting break, %d\n", __func__, status);
1167}
1168
1169static int ti_get_port_from_code(unsigned char code)
1170{
1171 return (code >> 4) - 3;
1172}
1173
1174static int ti_get_func_from_code(unsigned char code)
1175{
1176 return code & 0x0f;
1177}
1178
1179static void ti_interrupt_callback(struct urb *urb)
1180{
1181 struct ti_device *tdev = urb->context;
1182 struct usb_serial_port *port;
1183 struct usb_serial *serial = tdev->td_serial;
1184 struct ti_port *tport;
1185 struct device *dev = &urb->dev->dev;
1186 unsigned char *data = urb->transfer_buffer;
1187 int length = urb->actual_length;
1188 int port_number;
1189 int function;
1190 int status = urb->status;
1191 int retval;
1192 __u8 msr;
1193
1194 switch (status) {
1195 case 0:
1196 break;
1197 case -ECONNRESET:
1198 case -ENOENT:
1199 case -ESHUTDOWN:
1200 dev_dbg(dev, "%s - urb shutting down, %d\n", __func__, status);
1201 tdev->td_urb_error = 1;
1202 return;
1203 default:
1204 dev_err(dev, "%s - nonzero urb status, %d\n", __func__, status);
1205 tdev->td_urb_error = 1;
1206 goto exit;
1207 }
1208
1209 if (length != 2) {
1210 dev_dbg(dev, "%s - bad packet size, %d\n", __func__, length);
1211 goto exit;
1212 }
1213
1214 if (data[0] == TI_CODE_HARDWARE_ERROR) {
1215 dev_err(dev, "%s - hardware error, %d\n", __func__, data[1]);
1216 goto exit;
1217 }
1218
1219 port_number = ti_get_port_from_code(data[0]);
1220 function = ti_get_func_from_code(data[0]);
1221
1222 dev_dbg(dev, "%s - port_number %d, function %d, data 0x%02X\n",
1223 __func__, port_number, function, data[1]);
1224
1225 if (port_number >= serial->num_ports) {
1226 dev_err(dev, "%s - bad port number, %d\n",
1227 __func__, port_number);
1228 goto exit;
1229 }
1230
1231 port = serial->port[port_number];
1232
1233 tport = usb_get_serial_port_data(port);
1234 if (!tport)
1235 goto exit;
1236
1237 switch (function) {
1238 case TI_CODE_DATA_ERROR:
1239 dev_err(dev, "%s - DATA ERROR, port %d, data 0x%02X\n",
1240 __func__, port_number, data[1]);
1241 break;
1242
1243 case TI_CODE_MODEM_STATUS:
1244 msr = data[1];
1245 dev_dbg(dev, "%s - port %d, msr 0x%02X\n", __func__, port_number, msr);
1246 ti_handle_new_msr(tport, msr);
1247 break;
1248
1249 default:
1250 dev_err(dev, "%s - unknown interrupt code, 0x%02X\n",
1251 __func__, data[1]);
1252 break;
1253 }
1254
1255exit:
1256 retval = usb_submit_urb(urb, GFP_ATOMIC);
1257 if (retval)
1258 dev_err(dev, "%s - resubmit interrupt urb failed, %d\n",
1259 __func__, retval);
1260}
1261
1262
1263static void ti_bulk_in_callback(struct urb *urb)
1264{
1265 struct ti_port *tport = urb->context;
1266 struct usb_serial_port *port = tport->tp_port;
1267 struct device *dev = &urb->dev->dev;
1268 int status = urb->status;
1269 int retval = 0;
1270
1271 switch (status) {
1272 case 0:
1273 break;
1274 case -ECONNRESET:
1275 case -ENOENT:
1276 case -ESHUTDOWN:
1277 dev_dbg(dev, "%s - urb shutting down, %d\n", __func__, status);
1278 tport->tp_tdev->td_urb_error = 1;
1279 return;
1280 default:
1281 dev_err(dev, "%s - nonzero urb status, %d\n",
1282 __func__, status);
1283 tport->tp_tdev->td_urb_error = 1;
1284 }
1285
1286 if (status == -EPIPE)
1287 goto exit;
1288
1289 if (status) {
1290 dev_err(dev, "%s - stopping read!\n", __func__);
1291 return;
1292 }
1293
1294 if (urb->actual_length) {
1295 usb_serial_debug_data(dev, __func__, urb->actual_length,
1296 urb->transfer_buffer);
1297
1298 if (!tport->tp_is_open)
1299 dev_dbg(dev, "%s - port closed, dropping data\n",
1300 __func__);
1301 else
1302 ti_recv(port, urb->transfer_buffer, urb->actual_length);
1303 spin_lock(&tport->tp_lock);
1304 port->icount.rx += urb->actual_length;
1305 spin_unlock(&tport->tp_lock);
1306 }
1307
1308exit:
1309
1310 spin_lock(&tport->tp_lock);
1311 if (tport->tp_read_urb_state == TI_READ_URB_RUNNING)
1312 retval = usb_submit_urb(urb, GFP_ATOMIC);
1313 else if (tport->tp_read_urb_state == TI_READ_URB_STOPPING)
1314 tport->tp_read_urb_state = TI_READ_URB_STOPPED;
1315
1316 spin_unlock(&tport->tp_lock);
1317 if (retval)
1318 dev_err(dev, "%s - resubmit read urb failed, %d\n",
1319 __func__, retval);
1320}
1321
1322
1323static void ti_bulk_out_callback(struct urb *urb)
1324{
1325 struct ti_port *tport = urb->context;
1326 struct usb_serial_port *port = tport->tp_port;
1327 int status = urb->status;
1328
1329 tport->tp_write_urb_in_use = 0;
1330
1331 switch (status) {
1332 case 0:
1333 break;
1334 case -ECONNRESET:
1335 case -ENOENT:
1336 case -ESHUTDOWN:
1337 dev_dbg(&port->dev, "%s - urb shutting down, %d\n", __func__, status);
1338 tport->tp_tdev->td_urb_error = 1;
1339 return;
1340 default:
1341 dev_err_console(port, "%s - nonzero urb status, %d\n",
1342 __func__, status);
1343 tport->tp_tdev->td_urb_error = 1;
1344 }
1345
1346
1347 ti_send(tport);
1348}
1349
1350
1351static void ti_recv(struct usb_serial_port *port, unsigned char *data,
1352 int length)
1353{
1354 int cnt;
1355
1356 do {
1357 cnt = tty_insert_flip_string(&port->port, data, length);
1358 if (cnt < length) {
1359 dev_err(&port->dev, "%s - dropping data, %d bytes lost\n",
1360 __func__, length - cnt);
1361 if (cnt == 0)
1362 break;
1363 }
1364 tty_flip_buffer_push(&port->port);
1365 data += cnt;
1366 length -= cnt;
1367 } while (length > 0);
1368}
1369
1370
1371static void ti_send(struct ti_port *tport)
1372{
1373 int count, result;
1374 struct usb_serial_port *port = tport->tp_port;
1375 unsigned long flags;
1376
1377 spin_lock_irqsave(&tport->tp_lock, flags);
1378
1379 if (tport->tp_write_urb_in_use)
1380 goto unlock;
1381
1382 count = kfifo_out(&port->write_fifo,
1383 port->write_urb->transfer_buffer,
1384 port->bulk_out_size);
1385
1386 if (count == 0)
1387 goto unlock;
1388
1389 tport->tp_write_urb_in_use = 1;
1390
1391 spin_unlock_irqrestore(&tport->tp_lock, flags);
1392
1393 usb_serial_debug_data(&port->dev, __func__, count,
1394 port->write_urb->transfer_buffer);
1395
1396 usb_fill_bulk_urb(port->write_urb, port->serial->dev,
1397 usb_sndbulkpipe(port->serial->dev,
1398 port->bulk_out_endpointAddress),
1399 port->write_urb->transfer_buffer, count,
1400 ti_bulk_out_callback, tport);
1401
1402 result = usb_submit_urb(port->write_urb, GFP_ATOMIC);
1403 if (result) {
1404 dev_err_console(port, "%s - submit write urb failed, %d\n",
1405 __func__, result);
1406 tport->tp_write_urb_in_use = 0;
1407
1408 } else {
1409 spin_lock_irqsave(&tport->tp_lock, flags);
1410 port->icount.tx += count;
1411 spin_unlock_irqrestore(&tport->tp_lock, flags);
1412 }
1413
1414
1415 tty_port_tty_wakeup(&port->port);
1416
1417 return;
1418unlock:
1419 spin_unlock_irqrestore(&tport->tp_lock, flags);
1420 return;
1421}
1422
1423
1424static int ti_set_mcr(struct ti_port *tport, unsigned int mcr)
1425{
1426 unsigned long flags;
1427 int status;
1428
1429 status = ti_write_byte(tport->tp_port, tport->tp_tdev,
1430 tport->tp_uart_base_addr + TI_UART_OFFSET_MCR,
1431 TI_MCR_RTS | TI_MCR_DTR | TI_MCR_LOOP, mcr);
1432
1433 spin_lock_irqsave(&tport->tp_lock, flags);
1434 if (!status)
1435 tport->tp_shadow_mcr = mcr;
1436 spin_unlock_irqrestore(&tport->tp_lock, flags);
1437
1438 return status;
1439}
1440
1441
1442static int ti_get_lsr(struct ti_port *tport, u8 *lsr)
1443{
1444 int size, status;
1445 struct ti_device *tdev = tport->tp_tdev;
1446 struct usb_serial_port *port = tport->tp_port;
1447 int port_number = port->port_number;
1448 struct ti_port_status *data;
1449
1450 size = sizeof(struct ti_port_status);
1451 data = kmalloc(size, GFP_KERNEL);
1452 if (!data)
1453 return -ENOMEM;
1454
1455 status = ti_command_in_sync(tdev, TI_GET_PORT_STATUS,
1456 (__u8)(TI_UART1_PORT+port_number), 0, (__u8 *)data, size);
1457 if (status) {
1458 dev_err(&port->dev,
1459 "%s - get port status command failed, %d\n",
1460 __func__, status);
1461 goto free_data;
1462 }
1463
1464 dev_dbg(&port->dev, "%s - lsr 0x%02X\n", __func__, data->bLSR);
1465
1466 *lsr = data->bLSR;
1467
1468free_data:
1469 kfree(data);
1470 return status;
1471}
1472
1473
1474static int ti_get_serial_info(struct ti_port *tport,
1475 struct serial_struct __user *ret_arg)
1476{
1477 struct usb_serial_port *port = tport->tp_port;
1478 struct serial_struct ret_serial;
1479 unsigned cwait;
1480
1481 if (!ret_arg)
1482 return -EFAULT;
1483
1484 cwait = port->port.closing_wait;
1485 if (cwait != ASYNC_CLOSING_WAIT_NONE)
1486 cwait = jiffies_to_msecs(cwait) / 10;
1487
1488 memset(&ret_serial, 0, sizeof(ret_serial));
1489
1490 ret_serial.type = PORT_16550A;
1491 ret_serial.line = port->minor;
1492 ret_serial.port = port->port_number;
1493 ret_serial.flags = tport->tp_flags;
1494 ret_serial.xmit_fifo_size = kfifo_size(&port->write_fifo);
1495 ret_serial.baud_base = tport->tp_tdev->td_is_3410 ? 921600 : 460800;
1496 ret_serial.closing_wait = cwait;
1497
1498 if (copy_to_user(ret_arg, &ret_serial, sizeof(*ret_arg)))
1499 return -EFAULT;
1500
1501 return 0;
1502}
1503
1504
1505static int ti_set_serial_info(struct tty_struct *tty, struct ti_port *tport,
1506 struct serial_struct __user *new_arg)
1507{
1508 struct serial_struct new_serial;
1509 unsigned cwait;
1510
1511 if (copy_from_user(&new_serial, new_arg, sizeof(new_serial)))
1512 return -EFAULT;
1513
1514 cwait = new_serial.closing_wait;
1515 if (cwait != ASYNC_CLOSING_WAIT_NONE)
1516 cwait = msecs_to_jiffies(10 * new_serial.closing_wait);
1517
1518 tport->tp_flags = new_serial.flags & TI_SET_SERIAL_FLAGS;
1519 tport->tp_port->port.closing_wait = cwait;
1520
1521 return 0;
1522}
1523
1524
1525static void ti_handle_new_msr(struct ti_port *tport, __u8 msr)
1526{
1527 struct async_icount *icount;
1528 struct tty_struct *tty;
1529 unsigned long flags;
1530
1531 dev_dbg(&tport->tp_port->dev, "%s - msr 0x%02X\n", __func__, msr);
1532
1533 if (msr & TI_MSR_DELTA_MASK) {
1534 spin_lock_irqsave(&tport->tp_lock, flags);
1535 icount = &tport->tp_port->icount;
1536 if (msr & TI_MSR_DELTA_CTS)
1537 icount->cts++;
1538 if (msr & TI_MSR_DELTA_DSR)
1539 icount->dsr++;
1540 if (msr & TI_MSR_DELTA_CD)
1541 icount->dcd++;
1542 if (msr & TI_MSR_DELTA_RI)
1543 icount->rng++;
1544 wake_up_interruptible(&tport->tp_port->port.delta_msr_wait);
1545 spin_unlock_irqrestore(&tport->tp_lock, flags);
1546 }
1547
1548 tport->tp_msr = msr & TI_MSR_MASK;
1549
1550
1551 tty = tty_port_tty_get(&tport->tp_port->port);
1552 if (tty && C_CRTSCTS(tty)) {
1553 if (msr & TI_MSR_CTS)
1554 tty_wakeup(tty);
1555 }
1556 tty_kref_put(tty);
1557}
1558
1559
1560static void ti_stop_read(struct ti_port *tport, struct tty_struct *tty)
1561{
1562 unsigned long flags;
1563
1564 spin_lock_irqsave(&tport->tp_lock, flags);
1565
1566 if (tport->tp_read_urb_state == TI_READ_URB_RUNNING)
1567 tport->tp_read_urb_state = TI_READ_URB_STOPPING;
1568
1569 spin_unlock_irqrestore(&tport->tp_lock, flags);
1570}
1571
1572
1573static int ti_restart_read(struct ti_port *tport, struct tty_struct *tty)
1574{
1575 struct urb *urb;
1576 int status = 0;
1577 unsigned long flags;
1578
1579 spin_lock_irqsave(&tport->tp_lock, flags);
1580
1581 if (tport->tp_read_urb_state == TI_READ_URB_STOPPED) {
1582 tport->tp_read_urb_state = TI_READ_URB_RUNNING;
1583 urb = tport->tp_port->read_urb;
1584 spin_unlock_irqrestore(&tport->tp_lock, flags);
1585 urb->context = tport;
1586 status = usb_submit_urb(urb, GFP_KERNEL);
1587 } else {
1588 tport->tp_read_urb_state = TI_READ_URB_RUNNING;
1589 spin_unlock_irqrestore(&tport->tp_lock, flags);
1590 }
1591
1592 return status;
1593}
1594
1595
1596static int ti_command_out_sync(struct ti_device *tdev, __u8 command,
1597 __u16 moduleid, __u16 value, __u8 *data, int size)
1598{
1599 int status;
1600
1601 status = usb_control_msg(tdev->td_serial->dev,
1602 usb_sndctrlpipe(tdev->td_serial->dev, 0), command,
1603 (USB_TYPE_VENDOR | USB_RECIP_DEVICE | USB_DIR_OUT),
1604 value, moduleid, data, size, 1000);
1605
1606 if (status == size)
1607 status = 0;
1608
1609 if (status > 0)
1610 status = -ECOMM;
1611
1612 return status;
1613}
1614
1615
1616static int ti_command_in_sync(struct ti_device *tdev, __u8 command,
1617 __u16 moduleid, __u16 value, __u8 *data, int size)
1618{
1619 int status;
1620
1621 status = usb_control_msg(tdev->td_serial->dev,
1622 usb_rcvctrlpipe(tdev->td_serial->dev, 0), command,
1623 (USB_TYPE_VENDOR | USB_RECIP_DEVICE | USB_DIR_IN),
1624 value, moduleid, data, size, 1000);
1625
1626 if (status == size)
1627 status = 0;
1628
1629 if (status > 0)
1630 status = -ECOMM;
1631
1632 return status;
1633}
1634
1635
1636static int ti_write_byte(struct usb_serial_port *port,
1637 struct ti_device *tdev, unsigned long addr,
1638 __u8 mask, __u8 byte)
1639{
1640 int status;
1641 unsigned int size;
1642 struct ti_write_data_bytes *data;
1643
1644 dev_dbg(&port->dev, "%s - addr 0x%08lX, mask 0x%02X, byte 0x%02X\n", __func__,
1645 addr, mask, byte);
1646
1647 size = sizeof(struct ti_write_data_bytes) + 2;
1648 data = kmalloc(size, GFP_KERNEL);
1649 if (!data)
1650 return -ENOMEM;
1651
1652 data->bAddrType = TI_RW_DATA_ADDR_XDATA;
1653 data->bDataType = TI_RW_DATA_BYTE;
1654 data->bDataCounter = 1;
1655 data->wBaseAddrHi = cpu_to_be16(addr>>16);
1656 data->wBaseAddrLo = cpu_to_be16(addr);
1657 data->bData[0] = mask;
1658 data->bData[1] = byte;
1659
1660 status = ti_command_out_sync(tdev, TI_WRITE_DATA, TI_RAM_PORT, 0,
1661 (__u8 *)data, size);
1662
1663 if (status < 0)
1664 dev_err(&port->dev, "%s - failed, %d\n", __func__, status);
1665
1666 kfree(data);
1667
1668 return status;
1669}
1670
1671static int ti_do_download(struct usb_device *dev, int pipe,
1672 u8 *buffer, int size)
1673{
1674 int pos;
1675 u8 cs = 0;
1676 int done;
1677 struct ti_firmware_header *header;
1678 int status = 0;
1679 int len;
1680
1681 for (pos = sizeof(struct ti_firmware_header); pos < size; pos++)
1682 cs = (__u8)(cs + buffer[pos]);
1683
1684 header = (struct ti_firmware_header *)buffer;
1685 header->wLength = cpu_to_le16((__u16)(size
1686 - sizeof(struct ti_firmware_header)));
1687 header->bCheckSum = cs;
1688
1689 dev_dbg(&dev->dev, "%s - downloading firmware\n", __func__);
1690 for (pos = 0; pos < size; pos += done) {
1691 len = min(size - pos, TI_DOWNLOAD_MAX_PACKET_SIZE);
1692 status = usb_bulk_msg(dev, pipe, buffer + pos, len,
1693 &done, 1000);
1694 if (status)
1695 break;
1696 }
1697 return status;
1698}
1699
1700static int ti_download_firmware(struct ti_device *tdev)
1701{
1702 int status;
1703 int buffer_size;
1704 __u8 *buffer;
1705 struct usb_device *dev = tdev->td_serial->dev;
1706 unsigned int pipe = usb_sndbulkpipe(dev,
1707 tdev->td_serial->port[0]->bulk_out_endpointAddress);
1708 const struct firmware *fw_p;
1709 char buf[32];
1710
1711 if (le16_to_cpu(dev->descriptor.idVendor) == MXU1_VENDOR_ID) {
1712 snprintf(buf,
1713 sizeof(buf),
1714 "moxa/moxa-%04x.fw",
1715 le16_to_cpu(dev->descriptor.idProduct));
1716
1717 status = request_firmware(&fw_p, buf, &dev->dev);
1718 goto check_firmware;
1719 }
1720
1721
1722 sprintf(buf, "ti_usb-v%04x-p%04x.fw",
1723 le16_to_cpu(dev->descriptor.idVendor),
1724 le16_to_cpu(dev->descriptor.idProduct));
1725 status = request_firmware(&fw_p, buf, &dev->dev);
1726
1727 if (status != 0) {
1728 buf[0] = '\0';
1729 if (le16_to_cpu(dev->descriptor.idVendor) == MTS_VENDOR_ID) {
1730 switch (le16_to_cpu(dev->descriptor.idProduct)) {
1731 case MTS_CDMA_PRODUCT_ID:
1732 strcpy(buf, "mts_cdma.fw");
1733 break;
1734 case MTS_GSM_PRODUCT_ID:
1735 strcpy(buf, "mts_gsm.fw");
1736 break;
1737 case MTS_EDGE_PRODUCT_ID:
1738 strcpy(buf, "mts_edge.fw");
1739 break;
1740 case MTS_MT9234MU_PRODUCT_ID:
1741 strcpy(buf, "mts_mt9234mu.fw");
1742 break;
1743 case MTS_MT9234ZBA_PRODUCT_ID:
1744 strcpy(buf, "mts_mt9234zba.fw");
1745 break;
1746 case MTS_MT9234ZBAOLD_PRODUCT_ID:
1747 strcpy(buf, "mts_mt9234zba.fw");
1748 break; }
1749 }
1750 if (buf[0] == '\0') {
1751 if (tdev->td_is_3410)
1752 strcpy(buf, "ti_3410.fw");
1753 else
1754 strcpy(buf, "ti_5052.fw");
1755 }
1756 status = request_firmware(&fw_p, buf, &dev->dev);
1757 }
1758
1759check_firmware:
1760 if (status) {
1761 dev_err(&dev->dev, "%s - firmware not found\n", __func__);
1762 return -ENOENT;
1763 }
1764 if (fw_p->size > TI_FIRMWARE_BUF_SIZE) {
1765 dev_err(&dev->dev, "%s - firmware too large %zu\n", __func__, fw_p->size);
1766 release_firmware(fw_p);
1767 return -ENOENT;
1768 }
1769
1770 buffer_size = TI_FIRMWARE_BUF_SIZE + sizeof(struct ti_firmware_header);
1771 buffer = kmalloc(buffer_size, GFP_KERNEL);
1772 if (buffer) {
1773 memcpy(buffer, fw_p->data, fw_p->size);
1774 memset(buffer + fw_p->size, 0xff, buffer_size - fw_p->size);
1775 status = ti_do_download(dev, pipe, buffer, fw_p->size);
1776 kfree(buffer);
1777 } else {
1778 status = -ENOMEM;
1779 }
1780 release_firmware(fw_p);
1781 if (status) {
1782 dev_err(&dev->dev, "%s - error downloading firmware, %d\n",
1783 __func__, status);
1784 return status;
1785 }
1786
1787 dev_dbg(&dev->dev, "%s - download successful\n", __func__);
1788
1789 return 0;
1790}
1791
