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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 STARTECH_VENDOR_ID 0x14b0
41#define TI_3410_PRODUCT_ID 0x3410
42#define IBM_4543_PRODUCT_ID 0x4543
43#define IBM_454B_PRODUCT_ID 0x454b
44#define IBM_454C_PRODUCT_ID 0x454c
45#define TI_3410_EZ430_ID 0xF430 /* TI ez430 development tool */
46#define TI_5052_BOOT_PRODUCT_ID 0x5052 /* no EEPROM, no firmware */
47#define TI_5152_BOOT_PRODUCT_ID 0x5152 /* no EEPROM, no firmware */
48#define TI_5052_EEPROM_PRODUCT_ID 0x505A /* EEPROM, no firmware */
49#define TI_5052_FIRMWARE_PRODUCT_ID 0x505F /* firmware is running */
50#define FRI2_PRODUCT_ID 0x5053 /* Fish River Island II */
51
52/* Multi-Tech vendor and product ids */
53#define MTS_VENDOR_ID 0x06E0
54#define MTS_GSM_NO_FW_PRODUCT_ID 0xF108
55#define MTS_CDMA_NO_FW_PRODUCT_ID 0xF109
56#define MTS_CDMA_PRODUCT_ID 0xF110
57#define MTS_GSM_PRODUCT_ID 0xF111
58#define MTS_EDGE_PRODUCT_ID 0xF112
59#define MTS_MT9234MU_PRODUCT_ID 0xF114
60#define MTS_MT9234ZBA_PRODUCT_ID 0xF115
61#define MTS_MT9234ZBAOLD_PRODUCT_ID 0x0319
62
63/* Abbott Diabetics vendor and product ids */
64#define ABBOTT_VENDOR_ID 0x1a61
65#define ABBOTT_STEREO_PLUG_ID 0x3410
66#define ABBOTT_PRODUCT_ID ABBOTT_STEREO_PLUG_ID
67#define ABBOTT_STRIP_PORT_ID 0x3420
68
69/* Honeywell vendor and product IDs */
70#define HONEYWELL_VENDOR_ID 0x10ac
71#define HONEYWELL_HGI80_PRODUCT_ID 0x0102 /* Honeywell HGI80 */
72
73/* Moxa UPORT 11x0 vendor and product IDs */
74#define MXU1_VENDOR_ID 0x110a
75#define MXU1_1110_PRODUCT_ID 0x1110
76#define MXU1_1130_PRODUCT_ID 0x1130
77#define MXU1_1150_PRODUCT_ID 0x1150
78#define MXU1_1151_PRODUCT_ID 0x1151
79#define MXU1_1131_PRODUCT_ID 0x1131
80
81/* Commands */
82#define TI_GET_VERSION 0x01
83#define TI_GET_PORT_STATUS 0x02
84#define TI_GET_PORT_DEV_INFO 0x03
85#define TI_GET_CONFIG 0x04
86#define TI_SET_CONFIG 0x05
87#define TI_OPEN_PORT 0x06
88#define TI_CLOSE_PORT 0x07
89#define TI_START_PORT 0x08
90#define TI_STOP_PORT 0x09
91#define TI_TEST_PORT 0x0A
92#define TI_PURGE_PORT 0x0B
93#define TI_RESET_EXT_DEVICE 0x0C
94#define TI_WRITE_DATA 0x80
95#define TI_READ_DATA 0x81
96#define TI_REQ_TYPE_CLASS 0x82
97
98/* Module identifiers */
99#define TI_I2C_PORT 0x01
100#define TI_IEEE1284_PORT 0x02
101#define TI_UART1_PORT 0x03
102#define TI_UART2_PORT 0x04
103#define TI_RAM_PORT 0x05
104
105/* Modem status */
106#define TI_MSR_DELTA_CTS 0x01
107#define TI_MSR_DELTA_DSR 0x02
108#define TI_MSR_DELTA_RI 0x04
109#define TI_MSR_DELTA_CD 0x08
110#define TI_MSR_CTS 0x10
111#define TI_MSR_DSR 0x20
112#define TI_MSR_RI 0x40
113#define TI_MSR_CD 0x80
114#define TI_MSR_DELTA_MASK 0x0F
115#define TI_MSR_MASK 0xF0
116
117/* Line status */
118#define TI_LSR_OVERRUN_ERROR 0x01
119#define TI_LSR_PARITY_ERROR 0x02
120#define TI_LSR_FRAMING_ERROR 0x04
121#define TI_LSR_BREAK 0x08
122#define TI_LSR_ERROR 0x0F
123#define TI_LSR_RX_FULL 0x10
124#define TI_LSR_TX_EMPTY 0x20
125#define TI_LSR_TX_EMPTY_BOTH 0x40
126
127/* Line control */
128#define TI_LCR_BREAK 0x40
129
130/* Modem control */
131#define TI_MCR_LOOP 0x04
132#define TI_MCR_DTR 0x10
133#define TI_MCR_RTS 0x20
134
135/* Mask settings */
136#define TI_UART_ENABLE_RTS_IN 0x0001
137#define TI_UART_DISABLE_RTS 0x0002
138#define TI_UART_ENABLE_PARITY_CHECKING 0x0008
139#define TI_UART_ENABLE_DSR_OUT 0x0010
140#define TI_UART_ENABLE_CTS_OUT 0x0020
141#define TI_UART_ENABLE_X_OUT 0x0040
142#define TI_UART_ENABLE_XA_OUT 0x0080
143#define TI_UART_ENABLE_X_IN 0x0100
144#define TI_UART_ENABLE_DTR_IN 0x0800
145#define TI_UART_DISABLE_DTR 0x1000
146#define TI_UART_ENABLE_MS_INTS 0x2000
147#define TI_UART_ENABLE_AUTO_START_DMA 0x4000
148
149/* Parity */
150#define TI_UART_NO_PARITY 0x00
151#define TI_UART_ODD_PARITY 0x01
152#define TI_UART_EVEN_PARITY 0x02
153#define TI_UART_MARK_PARITY 0x03
154#define TI_UART_SPACE_PARITY 0x04
155
156/* Stop bits */
157#define TI_UART_1_STOP_BITS 0x00
158#define TI_UART_1_5_STOP_BITS 0x01
159#define TI_UART_2_STOP_BITS 0x02
160
161/* Bits per character */
162#define TI_UART_5_DATA_BITS 0x00
163#define TI_UART_6_DATA_BITS 0x01
164#define TI_UART_7_DATA_BITS 0x02
165#define TI_UART_8_DATA_BITS 0x03
166
167/* 232/485 modes */
168#define TI_UART_232 0x00
169#define TI_UART_485_RECEIVER_DISABLED 0x01
170#define TI_UART_485_RECEIVER_ENABLED 0x02
171
172/* Pipe transfer mode and timeout */
173#define TI_PIPE_MODE_CONTINUOUS 0x01
174#define TI_PIPE_MODE_MASK 0x03
175#define TI_PIPE_TIMEOUT_MASK 0x7C
176#define TI_PIPE_TIMEOUT_ENABLE 0x80
177
178/* Config struct */
179struct ti_uart_config {
180 __be16 wBaudRate;
181 __be16 wFlags;
182 u8 bDataBits;
183 u8 bParity;
184 u8 bStopBits;
185 char cXon;
186 char cXoff;
187 u8 bUartMode;
188};
189
190/* Get port status */
191struct ti_port_status {
192 u8 bCmdCode;
193 u8 bModuleId;
194 u8 bErrorCode;
195 u8 bMSR;
196 u8 bLSR;
197};
198
199/* Purge modes */
200#define TI_PURGE_OUTPUT 0x00
201#define TI_PURGE_INPUT 0x80
202
203/* Read/Write data */
204#define TI_RW_DATA_ADDR_SFR 0x10
205#define TI_RW_DATA_ADDR_IDATA 0x20
206#define TI_RW_DATA_ADDR_XDATA 0x30
207#define TI_RW_DATA_ADDR_CODE 0x40
208#define TI_RW_DATA_ADDR_GPIO 0x50
209#define TI_RW_DATA_ADDR_I2C 0x60
210#define TI_RW_DATA_ADDR_FLASH 0x70
211#define TI_RW_DATA_ADDR_DSP 0x80
212
213#define TI_RW_DATA_UNSPECIFIED 0x00
214#define TI_RW_DATA_BYTE 0x01
215#define TI_RW_DATA_WORD 0x02
216#define TI_RW_DATA_DOUBLE_WORD 0x04
217
218struct ti_write_data_bytes {
219 u8 bAddrType;
220 u8 bDataType;
221 u8 bDataCounter;
222 __be16 wBaseAddrHi;
223 __be16 wBaseAddrLo;
224 u8 bData[];
225} __packed;
226
227struct ti_read_data_request {
228 u8 bAddrType;
229 u8 bDataType;
230 u8 bDataCounter;
231 __be16 wBaseAddrHi;
232 __be16 wBaseAddrLo;
233} __packed;
234
235struct ti_read_data_bytes {
236 u8 bCmdCode;
237 u8 bModuleId;
238 u8 bErrorCode;
239 u8 bData[];
240};
241
242/* Interrupt struct */
243struct ti_interrupt {
244 u8 bICode;
245 u8 bIInfo;
246};
247
248/* Interrupt codes */
249#define TI_CODE_HARDWARE_ERROR 0xFF
250#define TI_CODE_DATA_ERROR 0x03
251#define TI_CODE_MODEM_STATUS 0x04
252
253/* Download firmware max packet size */
254#define TI_DOWNLOAD_MAX_PACKET_SIZE 64
255
256/* Firmware image header */
257struct ti_firmware_header {
258 __le16 wLength;
259 u8 bCheckSum;
260} __packed;
261
262/* UART addresses */
263#define TI_UART1_BASE_ADDR 0xFFA0 /* UART 1 base address */
264#define TI_UART2_BASE_ADDR 0xFFB0 /* UART 2 base address */
265#define TI_UART_OFFSET_LCR 0x0002 /* UART MCR register offset */
266#define TI_UART_OFFSET_MCR 0x0004 /* UART MCR register offset */
267
268#define TI_DRIVER_AUTHOR "Al Borchers <alborchers@steinerpoint.com>"
269#define TI_DRIVER_DESC "TI USB 3410/5052 Serial Driver"
270
271#define TI_FIRMWARE_BUF_SIZE 16284
272
273#define TI_TRANSFER_TIMEOUT 2
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 void 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 unsigned int ti_write_room(struct tty_struct *tty);
312static unsigned 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,
318 const struct ktermios *old_termios);
319static int ti_tiocmget(struct tty_struct *tty);
320static int ti_tiocmset(struct tty_struct *tty,
321 unsigned int set, unsigned int clear);
322static int ti_break(struct tty_struct *tty, int break_state);
323static void ti_interrupt_callback(struct urb *urb);
324static void ti_bulk_in_callback(struct urb *urb);
325static void ti_bulk_out_callback(struct urb *urb);
326
327static void ti_recv(struct usb_serial_port *port, unsigned char *data,
328 int length);
329static void ti_send(struct ti_port *tport);
330static int ti_set_mcr(struct ti_port *tport, unsigned int mcr);
331static int ti_get_lsr(struct ti_port *tport, u8 *lsr);
332static void ti_get_serial_info(struct tty_struct *tty, struct serial_struct *ss);
333static void ti_handle_new_msr(struct ti_port *tport, u8 msr);
334
335static void ti_stop_read(struct ti_port *tport, struct tty_struct *tty);
336static int ti_restart_read(struct ti_port *tport, struct tty_struct *tty);
337
338static int ti_command_out_sync(struct usb_device *udev, u8 command,
339 u16 moduleid, u16 value, void *data, int size);
340static int ti_command_in_sync(struct usb_device *udev, u8 command,
341 u16 moduleid, u16 value, void *data, int size);
342static int ti_port_cmd_out(struct usb_serial_port *port, u8 command,
343 u16 value, void *data, int size);
344static int ti_port_cmd_in(struct usb_serial_port *port, u8 command,
345 u16 value, void *data, int size);
346
347static int ti_write_byte(struct usb_serial_port *port, struct ti_device *tdev,
348 unsigned long addr, u8 mask, u8 byte);
349
350static int ti_download_firmware(struct ti_device *tdev);
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 { USB_DEVICE(STARTECH_VENDOR_ID, TI_3410_PRODUCT_ID) },
376 { } /* terminator */
377};
378
379static const struct usb_device_id ti_id_table_5052[] = {
380 { USB_DEVICE(TI_VENDOR_ID, TI_5052_BOOT_PRODUCT_ID) },
381 { USB_DEVICE(TI_VENDOR_ID, TI_5152_BOOT_PRODUCT_ID) },
382 { USB_DEVICE(TI_VENDOR_ID, TI_5052_EEPROM_PRODUCT_ID) },
383 { USB_DEVICE(TI_VENDOR_ID, TI_5052_FIRMWARE_PRODUCT_ID) },
384 { }
385};
386
387static const struct usb_device_id ti_id_table_combined[] = {
388 { USB_DEVICE(TI_VENDOR_ID, TI_3410_PRODUCT_ID) },
389 { USB_DEVICE(TI_VENDOR_ID, TI_3410_EZ430_ID) },
390 { USB_DEVICE(MTS_VENDOR_ID, MTS_GSM_NO_FW_PRODUCT_ID) },
391 { USB_DEVICE(MTS_VENDOR_ID, MTS_CDMA_NO_FW_PRODUCT_ID) },
392 { USB_DEVICE(MTS_VENDOR_ID, MTS_CDMA_PRODUCT_ID) },
393 { USB_DEVICE(MTS_VENDOR_ID, MTS_GSM_PRODUCT_ID) },
394 { USB_DEVICE(MTS_VENDOR_ID, MTS_EDGE_PRODUCT_ID) },
395 { USB_DEVICE(MTS_VENDOR_ID, MTS_MT9234MU_PRODUCT_ID) },
396 { USB_DEVICE(MTS_VENDOR_ID, MTS_MT9234ZBA_PRODUCT_ID) },
397 { USB_DEVICE(MTS_VENDOR_ID, MTS_MT9234ZBAOLD_PRODUCT_ID) },
398 { USB_DEVICE(TI_VENDOR_ID, TI_5052_BOOT_PRODUCT_ID) },
399 { USB_DEVICE(TI_VENDOR_ID, TI_5152_BOOT_PRODUCT_ID) },
400 { USB_DEVICE(TI_VENDOR_ID, TI_5052_EEPROM_PRODUCT_ID) },
401 { USB_DEVICE(TI_VENDOR_ID, TI_5052_FIRMWARE_PRODUCT_ID) },
402 { USB_DEVICE(IBM_VENDOR_ID, IBM_4543_PRODUCT_ID) },
403 { USB_DEVICE(IBM_VENDOR_ID, IBM_454B_PRODUCT_ID) },
404 { USB_DEVICE(IBM_VENDOR_ID, IBM_454C_PRODUCT_ID) },
405 { USB_DEVICE(ABBOTT_VENDOR_ID, ABBOTT_PRODUCT_ID) },
406 { USB_DEVICE(ABBOTT_VENDOR_ID, ABBOTT_STRIP_PORT_ID) },
407 { USB_DEVICE(TI_VENDOR_ID, FRI2_PRODUCT_ID) },
408 { USB_DEVICE(HONEYWELL_VENDOR_ID, HONEYWELL_HGI80_PRODUCT_ID) },
409 { USB_DEVICE(MXU1_VENDOR_ID, MXU1_1110_PRODUCT_ID) },
410 { USB_DEVICE(MXU1_VENDOR_ID, MXU1_1130_PRODUCT_ID) },
411 { USB_DEVICE(MXU1_VENDOR_ID, MXU1_1131_PRODUCT_ID) },
412 { USB_DEVICE(MXU1_VENDOR_ID, MXU1_1150_PRODUCT_ID) },
413 { USB_DEVICE(MXU1_VENDOR_ID, MXU1_1151_PRODUCT_ID) },
414 { USB_DEVICE(STARTECH_VENDOR_ID, TI_3410_PRODUCT_ID) },
415 { } /* terminator */
416};
417
418static struct usb_serial_driver ti_1port_device = {
419 .driver = {
420 .name = "ti_usb_3410_5052_1",
421 },
422 .description = "TI USB 3410 1 port adapter",
423 .id_table = ti_id_table_3410,
424 .num_ports = 1,
425 .num_bulk_out = 1,
426 .attach = ti_startup,
427 .release = ti_release,
428 .port_probe = ti_port_probe,
429 .port_remove = ti_port_remove,
430 .open = ti_open,
431 .close = ti_close,
432 .write = ti_write,
433 .write_room = ti_write_room,
434 .chars_in_buffer = ti_chars_in_buffer,
435 .tx_empty = ti_tx_empty,
436 .throttle = ti_throttle,
437 .unthrottle = ti_unthrottle,
438 .get_serial = ti_get_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 .name = "ti_usb_3410_5052_2",
453 },
454 .description = "TI USB 5052 2 port adapter",
455 .id_table = ti_id_table_5052,
456 .num_ports = 2,
457 .num_bulk_out = 1,
458 .attach = ti_startup,
459 .release = ti_release,
460 .port_probe = ti_port_probe,
461 .port_remove = ti_port_remove,
462 .open = ti_open,
463 .close = ti_close,
464 .write = ti_write,
465 .write_room = ti_write_room,
466 .chars_in_buffer = ti_chars_in_buffer,
467 .tx_empty = ti_tx_empty,
468 .throttle = ti_throttle,
469 .unthrottle = ti_unthrottle,
470 .get_serial = ti_get_serial_info,
471 .set_termios = ti_set_termios,
472 .tiocmget = ti_tiocmget,
473 .tiocmset = ti_tiocmset,
474 .tiocmiwait = usb_serial_generic_tiocmiwait,
475 .get_icount = usb_serial_generic_get_icount,
476 .break_ctl = ti_break,
477 .read_int_callback = ti_interrupt_callback,
478 .read_bulk_callback = ti_bulk_in_callback,
479 .write_bulk_callback = ti_bulk_out_callback,
480};
481
482static struct usb_serial_driver * const serial_drivers[] = {
483 &ti_1port_device, &ti_2port_device, NULL
484};
485
486MODULE_AUTHOR(TI_DRIVER_AUTHOR);
487MODULE_DESCRIPTION(TI_DRIVER_DESC);
488MODULE_LICENSE("GPL");
489
490MODULE_FIRMWARE("ti_3410.fw");
491MODULE_FIRMWARE("ti_5052.fw");
492MODULE_FIRMWARE("mts_cdma.fw");
493MODULE_FIRMWARE("mts_gsm.fw");
494MODULE_FIRMWARE("mts_edge.fw");
495MODULE_FIRMWARE("mts_mt9234mu.fw");
496MODULE_FIRMWARE("mts_mt9234zba.fw");
497MODULE_FIRMWARE("moxa/moxa-1110.fw");
498MODULE_FIRMWARE("moxa/moxa-1130.fw");
499MODULE_FIRMWARE("moxa/moxa-1131.fw");
500MODULE_FIRMWARE("moxa/moxa-1150.fw");
501MODULE_FIRMWARE("moxa/moxa-1151.fw");
502
503MODULE_DEVICE_TABLE(usb, ti_id_table_combined);
504
505module_usb_serial_driver(serial_drivers, ti_id_table_combined);
506
507static int ti_startup(struct usb_serial *serial)
508{
509 struct ti_device *tdev;
510 struct usb_device *dev = serial->dev;
511 struct usb_host_interface *cur_altsetting;
512 int num_endpoints;
513 u16 vid, pid;
514 int status;
515
516 dev_dbg(&dev->dev,
517 "%s - product 0x%4X, num configurations %d, configuration value %d\n",
518 __func__, le16_to_cpu(dev->descriptor.idProduct),
519 dev->descriptor.bNumConfigurations,
520 dev->actconfig->desc.bConfigurationValue);
521
522 tdev = kzalloc(sizeof(struct ti_device), GFP_KERNEL);
523 if (!tdev)
524 return -ENOMEM;
525
526 mutex_init(&tdev->td_open_close_lock);
527 tdev->td_serial = serial;
528 usb_set_serial_data(serial, tdev);
529
530 /* determine device type */
531 if (serial->type == &ti_1port_device)
532 tdev->td_is_3410 = 1;
533 dev_dbg(&dev->dev, "%s - device type is %s\n", __func__,
534 tdev->td_is_3410 ? "3410" : "5052");
535
536 vid = le16_to_cpu(dev->descriptor.idVendor);
537 pid = le16_to_cpu(dev->descriptor.idProduct);
538 if (vid == MXU1_VENDOR_ID) {
539 switch (pid) {
540 case MXU1_1130_PRODUCT_ID:
541 case MXU1_1131_PRODUCT_ID:
542 tdev->td_rs485_only = true;
543 break;
544 }
545 }
546
547 cur_altsetting = serial->interface->cur_altsetting;
548 num_endpoints = cur_altsetting->desc.bNumEndpoints;
549
550 /* if we have only 1 configuration and 1 endpoint, download firmware */
551 if (dev->descriptor.bNumConfigurations == 1 && num_endpoints == 1) {
552 status = ti_download_firmware(tdev);
553
554 if (status != 0)
555 goto free_tdev;
556
557 /* 3410 must be reset, 5052 resets itself */
558 if (tdev->td_is_3410) {
559 msleep_interruptible(100);
560 usb_reset_device(dev);
561 }
562
563 status = -ENODEV;
564 goto free_tdev;
565 }
566
567 /* the second configuration must be set */
568 if (dev->actconfig->desc.bConfigurationValue == TI_BOOT_CONFIG) {
569 status = usb_driver_set_configuration(dev, TI_ACTIVE_CONFIG);
570 status = status ? status : -ENODEV;
571 goto free_tdev;
572 }
573
574 if (serial->num_bulk_in < serial->num_ports ||
575 serial->num_bulk_out < serial->num_ports) {
576 dev_err(&serial->interface->dev, "missing endpoints\n");
577 status = -ENODEV;
578 goto free_tdev;
579 }
580
581 return 0;
582
583free_tdev:
584 kfree(tdev);
585 usb_set_serial_data(serial, NULL);
586 return status;
587}
588
589
590static void ti_release(struct usb_serial *serial)
591{
592 struct ti_device *tdev = usb_get_serial_data(serial);
593
594 kfree(tdev);
595}
596
597static int ti_port_probe(struct usb_serial_port *port)
598{
599 struct ti_port *tport;
600
601 tport = kzalloc(sizeof(*tport), GFP_KERNEL);
602 if (!tport)
603 return -ENOMEM;
604
605 spin_lock_init(&tport->tp_lock);
606 if (port == port->serial->port[0])
607 tport->tp_uart_base_addr = TI_UART1_BASE_ADDR;
608 else
609 tport->tp_uart_base_addr = TI_UART2_BASE_ADDR;
610 tport->tp_port = port;
611 tport->tp_tdev = usb_get_serial_data(port->serial);
612
613 if (tport->tp_tdev->td_rs485_only)
614 tport->tp_uart_mode = TI_UART_485_RECEIVER_DISABLED;
615 else
616 tport->tp_uart_mode = TI_UART_232;
617
618 usb_set_serial_port_data(port, tport);
619
620 /*
621 * The TUSB5052 LSR does not tell when the transmitter shift register
622 * has emptied so add a one-character drain delay.
623 */
624 if (!tport->tp_tdev->td_is_3410)
625 port->port.drain_delay = 1;
626
627 return 0;
628}
629
630static void ti_port_remove(struct usb_serial_port *port)
631{
632 struct ti_port *tport;
633
634 tport = usb_get_serial_port_data(port);
635 kfree(tport);
636}
637
638static int ti_open(struct tty_struct *tty, struct usb_serial_port *port)
639{
640 struct ti_port *tport = usb_get_serial_port_data(port);
641 struct ti_device *tdev;
642 struct usb_device *dev;
643 struct urb *urb;
644 int status;
645 u16 open_settings;
646
647 open_settings = (TI_PIPE_MODE_CONTINUOUS |
648 TI_PIPE_TIMEOUT_ENABLE |
649 (TI_TRANSFER_TIMEOUT << 2));
650
651 dev = port->serial->dev;
652 tdev = tport->tp_tdev;
653
654 /* only one open on any port on a device at a time */
655 if (mutex_lock_interruptible(&tdev->td_open_close_lock))
656 return -ERESTARTSYS;
657
658 tport->tp_msr = 0;
659 tport->tp_shadow_mcr |= (TI_MCR_RTS | TI_MCR_DTR);
660
661 /* start interrupt urb the first time a port is opened on this device */
662 if (tdev->td_open_port_count == 0) {
663 dev_dbg(&port->dev, "%s - start interrupt in urb\n", __func__);
664 urb = tdev->td_serial->port[0]->interrupt_in_urb;
665 if (!urb) {
666 dev_err(&port->dev, "%s - no interrupt urb\n", __func__);
667 status = -EINVAL;
668 goto release_lock;
669 }
670 urb->context = tdev;
671 status = usb_submit_urb(urb, GFP_KERNEL);
672 if (status) {
673 dev_err(&port->dev, "%s - submit interrupt urb failed, %d\n", __func__, status);
674 goto release_lock;
675 }
676 }
677
678 if (tty)
679 ti_set_termios(tty, port, &tty->termios);
680
681 status = ti_port_cmd_out(port, TI_OPEN_PORT, open_settings, NULL, 0);
682 if (status) {
683 dev_err(&port->dev, "%s - cannot send open command, %d\n",
684 __func__, status);
685 goto unlink_int_urb;
686 }
687
688 status = ti_port_cmd_out(port, TI_START_PORT, 0, NULL, 0);
689 if (status) {
690 dev_err(&port->dev, "%s - cannot send start command, %d\n",
691 __func__, status);
692 goto unlink_int_urb;
693 }
694
695 status = ti_port_cmd_out(port, TI_PURGE_PORT, TI_PURGE_INPUT, NULL, 0);
696 if (status) {
697 dev_err(&port->dev, "%s - cannot clear input buffers, %d\n",
698 __func__, status);
699 goto unlink_int_urb;
700 }
701 status = ti_port_cmd_out(port, TI_PURGE_PORT, TI_PURGE_OUTPUT, NULL, 0);
702 if (status) {
703 dev_err(&port->dev, "%s - cannot clear output buffers, %d\n",
704 __func__, status);
705 goto unlink_int_urb;
706 }
707
708 /* reset the data toggle on the bulk endpoints to work around bug in
709 * host controllers where things get out of sync some times */
710 usb_clear_halt(dev, port->write_urb->pipe);
711 usb_clear_halt(dev, port->read_urb->pipe);
712
713 if (tty)
714 ti_set_termios(tty, port, &tty->termios);
715
716 status = ti_port_cmd_out(port, TI_OPEN_PORT, open_settings, NULL, 0);
717 if (status) {
718 dev_err(&port->dev, "%s - cannot send open command (2), %d\n",
719 __func__, status);
720 goto unlink_int_urb;
721 }
722
723 status = ti_port_cmd_out(port, TI_START_PORT, 0, NULL, 0);
724 if (status) {
725 dev_err(&port->dev, "%s - cannot send start command (2), %d\n",
726 __func__, status);
727 goto unlink_int_urb;
728 }
729
730 /* start read urb */
731 urb = port->read_urb;
732 if (!urb) {
733 dev_err(&port->dev, "%s - no read urb\n", __func__);
734 status = -EINVAL;
735 goto unlink_int_urb;
736 }
737 tport->tp_read_urb_state = TI_READ_URB_RUNNING;
738 urb->context = tport;
739 status = usb_submit_urb(urb, GFP_KERNEL);
740 if (status) {
741 dev_err(&port->dev, "%s - submit read urb failed, %d\n",
742 __func__, status);
743 goto unlink_int_urb;
744 }
745
746 tport->tp_is_open = 1;
747 ++tdev->td_open_port_count;
748
749 goto release_lock;
750
751unlink_int_urb:
752 if (tdev->td_open_port_count == 0)
753 usb_kill_urb(port->serial->port[0]->interrupt_in_urb);
754release_lock:
755 mutex_unlock(&tdev->td_open_close_lock);
756 return status;
757}
758
759
760static void ti_close(struct usb_serial_port *port)
761{
762 struct ti_device *tdev;
763 struct ti_port *tport;
764 int status;
765 unsigned long flags;
766
767 tdev = usb_get_serial_data(port->serial);
768 tport = usb_get_serial_port_data(port);
769
770 tport->tp_is_open = 0;
771
772 usb_kill_urb(port->read_urb);
773 usb_kill_urb(port->write_urb);
774 tport->tp_write_urb_in_use = 0;
775 spin_lock_irqsave(&tport->tp_lock, flags);
776 kfifo_reset_out(&port->write_fifo);
777 spin_unlock_irqrestore(&tport->tp_lock, flags);
778
779 status = ti_port_cmd_out(port, TI_CLOSE_PORT, 0, NULL, 0);
780 if (status)
781 dev_err(&port->dev,
782 "%s - cannot send close port command, %d\n"
783 , __func__, status);
784
785 mutex_lock(&tdev->td_open_close_lock);
786 --tdev->td_open_port_count;
787 if (tdev->td_open_port_count == 0) {
788 /* last port is closed, shut down interrupt urb */
789 usb_kill_urb(port->serial->port[0]->interrupt_in_urb);
790 }
791 mutex_unlock(&tdev->td_open_close_lock);
792}
793
794
795static int ti_write(struct tty_struct *tty, struct usb_serial_port *port,
796 const unsigned char *data, int count)
797{
798 struct ti_port *tport = usb_get_serial_port_data(port);
799
800 if (count == 0) {
801 return 0;
802 }
803
804 if (!tport->tp_is_open)
805 return -ENODEV;
806
807 count = kfifo_in_locked(&port->write_fifo, data, count,
808 &tport->tp_lock);
809 ti_send(tport);
810
811 return count;
812}
813
814
815static unsigned int ti_write_room(struct tty_struct *tty)
816{
817 struct usb_serial_port *port = tty->driver_data;
818 struct ti_port *tport = usb_get_serial_port_data(port);
819 unsigned int room;
820 unsigned long flags;
821
822 spin_lock_irqsave(&tport->tp_lock, flags);
823 room = kfifo_avail(&port->write_fifo);
824 spin_unlock_irqrestore(&tport->tp_lock, flags);
825
826 dev_dbg(&port->dev, "%s - returns %u\n", __func__, room);
827 return room;
828}
829
830
831static unsigned int ti_chars_in_buffer(struct tty_struct *tty)
832{
833 struct usb_serial_port *port = tty->driver_data;
834 struct ti_port *tport = usb_get_serial_port_data(port);
835 unsigned int chars;
836 unsigned long flags;
837
838 spin_lock_irqsave(&tport->tp_lock, flags);
839 chars = kfifo_len(&port->write_fifo);
840 spin_unlock_irqrestore(&tport->tp_lock, flags);
841
842 dev_dbg(&port->dev, "%s - returns %u\n", __func__, chars);
843 return chars;
844}
845
846static bool ti_tx_empty(struct usb_serial_port *port)
847{
848 struct ti_port *tport = usb_get_serial_port_data(port);
849 u8 lsr, mask;
850 int ret;
851
852 /*
853 * TUSB5052 does not have the TEMT bit to tell if the shift register
854 * is empty.
855 */
856 if (tport->tp_tdev->td_is_3410)
857 mask = TI_LSR_TX_EMPTY_BOTH;
858 else
859 mask = TI_LSR_TX_EMPTY;
860
861 ret = ti_get_lsr(tport, &lsr);
862 if (!ret && !(lsr & mask))
863 return false;
864
865 return true;
866}
867
868static void ti_throttle(struct tty_struct *tty)
869{
870 struct usb_serial_port *port = tty->driver_data;
871 struct ti_port *tport = usb_get_serial_port_data(port);
872
873 if (I_IXOFF(tty) || C_CRTSCTS(tty))
874 ti_stop_read(tport, tty);
875
876}
877
878
879static void ti_unthrottle(struct tty_struct *tty)
880{
881 struct usb_serial_port *port = tty->driver_data;
882 struct ti_port *tport = usb_get_serial_port_data(port);
883 int status;
884
885 if (I_IXOFF(tty) || C_CRTSCTS(tty)) {
886 status = ti_restart_read(tport, tty);
887 if (status)
888 dev_err(&port->dev, "%s - cannot restart read, %d\n",
889 __func__, status);
890 }
891}
892
893static void ti_set_termios(struct tty_struct *tty,
894 struct usb_serial_port *port,
895 const struct ktermios *old_termios)
896{
897 struct ti_port *tport = usb_get_serial_port_data(port);
898 struct ti_uart_config *config;
899 int baud;
900 int status;
901 unsigned int mcr;
902 u16 wbaudrate;
903 u16 wflags = 0;
904
905 config = kmalloc(sizeof(*config), GFP_KERNEL);
906 if (!config)
907 return;
908
909 /* these flags must be set */
910 wflags |= TI_UART_ENABLE_MS_INTS;
911 wflags |= TI_UART_ENABLE_AUTO_START_DMA;
912 config->bUartMode = tport->tp_uart_mode;
913
914 switch (C_CSIZE(tty)) {
915 case CS5:
916 config->bDataBits = TI_UART_5_DATA_BITS;
917 break;
918 case CS6:
919 config->bDataBits = TI_UART_6_DATA_BITS;
920 break;
921 case CS7:
922 config->bDataBits = TI_UART_7_DATA_BITS;
923 break;
924 default:
925 case CS8:
926 config->bDataBits = TI_UART_8_DATA_BITS;
927 break;
928 }
929
930 /* CMSPAR isn't supported by this driver */
931 tty->termios.c_cflag &= ~CMSPAR;
932
933 if (C_PARENB(tty)) {
934 if (C_PARODD(tty)) {
935 wflags |= TI_UART_ENABLE_PARITY_CHECKING;
936 config->bParity = TI_UART_ODD_PARITY;
937 } else {
938 wflags |= TI_UART_ENABLE_PARITY_CHECKING;
939 config->bParity = TI_UART_EVEN_PARITY;
940 }
941 } else {
942 wflags &= ~TI_UART_ENABLE_PARITY_CHECKING;
943 config->bParity = TI_UART_NO_PARITY;
944 }
945
946 if (C_CSTOPB(tty))
947 config->bStopBits = TI_UART_2_STOP_BITS;
948 else
949 config->bStopBits = TI_UART_1_STOP_BITS;
950
951 if (C_CRTSCTS(tty)) {
952 /* RTS flow control must be off to drop RTS for baud rate B0 */
953 if ((C_BAUD(tty)) != B0)
954 wflags |= TI_UART_ENABLE_RTS_IN;
955 wflags |= TI_UART_ENABLE_CTS_OUT;
956 } else {
957 ti_restart_read(tport, tty);
958 }
959
960 if (I_IXOFF(tty) || I_IXON(tty)) {
961 config->cXon = START_CHAR(tty);
962 config->cXoff = STOP_CHAR(tty);
963
964 if (I_IXOFF(tty))
965 wflags |= TI_UART_ENABLE_X_IN;
966 else
967 ti_restart_read(tport, tty);
968
969 if (I_IXON(tty))
970 wflags |= TI_UART_ENABLE_X_OUT;
971 }
972
973 baud = tty_get_baud_rate(tty);
974 if (!baud)
975 baud = 9600;
976 if (tport->tp_tdev->td_is_3410)
977 wbaudrate = (923077 + baud/2) / baud;
978 else
979 wbaudrate = (461538 + baud/2) / baud;
980
981 /* FIXME: Should calculate resulting baud here and report it back */
982 if ((C_BAUD(tty)) != B0)
983 tty_encode_baud_rate(tty, baud, baud);
984
985 dev_dbg(&port->dev,
986 "%s - BaudRate=%d, wBaudRate=%d, wFlags=0x%04X, bDataBits=%d, bParity=%d, bStopBits=%d, cXon=%d, cXoff=%d, bUartMode=%d\n",
987 __func__, baud, wbaudrate, wflags,
988 config->bDataBits, config->bParity, config->bStopBits,
989 config->cXon, config->cXoff, config->bUartMode);
990
991 config->wBaudRate = cpu_to_be16(wbaudrate);
992 config->wFlags = cpu_to_be16(wflags);
993
994 status = ti_port_cmd_out(port, TI_SET_CONFIG, 0, config,
995 sizeof(*config));
996 if (status)
997 dev_err(&port->dev, "%s - cannot set config on port %d, %d\n",
998 __func__, port->port_number, status);
999
1000 /* SET_CONFIG asserts RTS and DTR, reset them correctly */
1001 mcr = tport->tp_shadow_mcr;
1002 /* if baud rate is B0, clear RTS and DTR */
1003 if (C_BAUD(tty) == B0)
1004 mcr &= ~(TI_MCR_DTR | TI_MCR_RTS);
1005 status = ti_set_mcr(tport, mcr);
1006 if (status)
1007 dev_err(&port->dev, "%s - cannot set modem control on port %d, %d\n",
1008 __func__, port->port_number, status);
1009
1010 kfree(config);
1011}
1012
1013
1014static int ti_tiocmget(struct tty_struct *tty)
1015{
1016 struct usb_serial_port *port = tty->driver_data;
1017 struct ti_port *tport = usb_get_serial_port_data(port);
1018 unsigned int result;
1019 unsigned int msr;
1020 unsigned int mcr;
1021 unsigned long flags;
1022
1023 spin_lock_irqsave(&tport->tp_lock, flags);
1024 msr = tport->tp_msr;
1025 mcr = tport->tp_shadow_mcr;
1026 spin_unlock_irqrestore(&tport->tp_lock, flags);
1027
1028 result = ((mcr & TI_MCR_DTR) ? TIOCM_DTR : 0)
1029 | ((mcr & TI_MCR_RTS) ? TIOCM_RTS : 0)
1030 | ((mcr & TI_MCR_LOOP) ? TIOCM_LOOP : 0)
1031 | ((msr & TI_MSR_CTS) ? TIOCM_CTS : 0)
1032 | ((msr & TI_MSR_CD) ? TIOCM_CAR : 0)
1033 | ((msr & TI_MSR_RI) ? TIOCM_RI : 0)
1034 | ((msr & TI_MSR_DSR) ? TIOCM_DSR : 0);
1035
1036 dev_dbg(&port->dev, "%s - 0x%04X\n", __func__, result);
1037
1038 return result;
1039}
1040
1041
1042static int ti_tiocmset(struct tty_struct *tty,
1043 unsigned int set, unsigned int clear)
1044{
1045 struct usb_serial_port *port = tty->driver_data;
1046 struct ti_port *tport = usb_get_serial_port_data(port);
1047 unsigned int mcr;
1048 unsigned long flags;
1049
1050 spin_lock_irqsave(&tport->tp_lock, flags);
1051 mcr = tport->tp_shadow_mcr;
1052
1053 if (set & TIOCM_RTS)
1054 mcr |= TI_MCR_RTS;
1055 if (set & TIOCM_DTR)
1056 mcr |= TI_MCR_DTR;
1057 if (set & TIOCM_LOOP)
1058 mcr |= TI_MCR_LOOP;
1059
1060 if (clear & TIOCM_RTS)
1061 mcr &= ~TI_MCR_RTS;
1062 if (clear & TIOCM_DTR)
1063 mcr &= ~TI_MCR_DTR;
1064 if (clear & TIOCM_LOOP)
1065 mcr &= ~TI_MCR_LOOP;
1066 spin_unlock_irqrestore(&tport->tp_lock, flags);
1067
1068 return ti_set_mcr(tport, mcr);
1069}
1070
1071
1072static int ti_break(struct tty_struct *tty, int break_state)
1073{
1074 struct usb_serial_port *port = tty->driver_data;
1075 struct ti_port *tport = usb_get_serial_port_data(port);
1076 int status;
1077
1078 dev_dbg(&port->dev, "%s - state = %d\n", __func__, break_state);
1079
1080 status = ti_write_byte(port, tport->tp_tdev,
1081 tport->tp_uart_base_addr + TI_UART_OFFSET_LCR,
1082 TI_LCR_BREAK, break_state == -1 ? TI_LCR_BREAK : 0);
1083
1084 if (status) {
1085 dev_dbg(&port->dev, "%s - error setting break, %d\n", __func__, status);
1086 return status;
1087 }
1088
1089 return 0;
1090}
1091
1092static int ti_get_port_from_code(unsigned char code)
1093{
1094 return (code >> 6) & 0x01;
1095}
1096
1097static int ti_get_func_from_code(unsigned char code)
1098{
1099 return code & 0x0f;
1100}
1101
1102static void ti_interrupt_callback(struct urb *urb)
1103{
1104 struct ti_device *tdev = urb->context;
1105 struct usb_serial_port *port;
1106 struct usb_serial *serial = tdev->td_serial;
1107 struct ti_port *tport;
1108 struct device *dev = &urb->dev->dev;
1109 unsigned char *data = urb->transfer_buffer;
1110 int length = urb->actual_length;
1111 int port_number;
1112 int function;
1113 int status = urb->status;
1114 int retval;
1115 u8 msr;
1116
1117 switch (status) {
1118 case 0:
1119 break;
1120 case -ECONNRESET:
1121 case -ENOENT:
1122 case -ESHUTDOWN:
1123 dev_dbg(dev, "%s - urb shutting down, %d\n", __func__, status);
1124 return;
1125 default:
1126 dev_err(dev, "%s - nonzero urb status, %d\n", __func__, status);
1127 goto exit;
1128 }
1129
1130 if (length != 2) {
1131 dev_dbg(dev, "%s - bad packet size, %d\n", __func__, length);
1132 goto exit;
1133 }
1134
1135 if (data[0] == TI_CODE_HARDWARE_ERROR) {
1136 dev_err(dev, "%s - hardware error, %d\n", __func__, data[1]);
1137 goto exit;
1138 }
1139
1140 port_number = ti_get_port_from_code(data[0]);
1141 function = ti_get_func_from_code(data[0]);
1142
1143 dev_dbg(dev, "%s - port_number %d, function %d, data 0x%02X\n",
1144 __func__, port_number, function, data[1]);
1145
1146 if (port_number >= serial->num_ports) {
1147 dev_err(dev, "%s - bad port number, %d\n",
1148 __func__, port_number);
1149 goto exit;
1150 }
1151
1152 port = serial->port[port_number];
1153
1154 tport = usb_get_serial_port_data(port);
1155 if (!tport)
1156 goto exit;
1157
1158 switch (function) {
1159 case TI_CODE_DATA_ERROR:
1160 dev_err(dev, "%s - DATA ERROR, port %d, data 0x%02X\n",
1161 __func__, port_number, data[1]);
1162 break;
1163
1164 case TI_CODE_MODEM_STATUS:
1165 msr = data[1];
1166 dev_dbg(dev, "%s - port %d, msr 0x%02X\n", __func__, port_number, msr);
1167 ti_handle_new_msr(tport, msr);
1168 break;
1169
1170 default:
1171 dev_err(dev, "%s - unknown interrupt code, 0x%02X\n",
1172 __func__, data[1]);
1173 break;
1174 }
1175
1176exit:
1177 retval = usb_submit_urb(urb, GFP_ATOMIC);
1178 if (retval)
1179 dev_err(dev, "%s - resubmit interrupt urb failed, %d\n",
1180 __func__, retval);
1181}
1182
1183
1184static void ti_bulk_in_callback(struct urb *urb)
1185{
1186 struct ti_port *tport = urb->context;
1187 struct usb_serial_port *port = tport->tp_port;
1188 struct device *dev = &urb->dev->dev;
1189 int status = urb->status;
1190 unsigned long flags;
1191 int retval = 0;
1192
1193 switch (status) {
1194 case 0:
1195 break;
1196 case -ECONNRESET:
1197 case -ENOENT:
1198 case -ESHUTDOWN:
1199 dev_dbg(dev, "%s - urb shutting down, %d\n", __func__, status);
1200 return;
1201 default:
1202 dev_err(dev, "%s - nonzero urb status, %d\n",
1203 __func__, status);
1204 }
1205
1206 if (status == -EPIPE)
1207 goto exit;
1208
1209 if (status) {
1210 dev_err(dev, "%s - stopping read!\n", __func__);
1211 return;
1212 }
1213
1214 if (urb->actual_length) {
1215 usb_serial_debug_data(dev, __func__, urb->actual_length,
1216 urb->transfer_buffer);
1217
1218 if (!tport->tp_is_open)
1219 dev_dbg(dev, "%s - port closed, dropping data\n",
1220 __func__);
1221 else
1222 ti_recv(port, urb->transfer_buffer, urb->actual_length);
1223 spin_lock_irqsave(&tport->tp_lock, flags);
1224 port->icount.rx += urb->actual_length;
1225 spin_unlock_irqrestore(&tport->tp_lock, flags);
1226 }
1227
1228exit:
1229 /* continue to read unless stopping */
1230 spin_lock_irqsave(&tport->tp_lock, flags);
1231 if (tport->tp_read_urb_state == TI_READ_URB_RUNNING)
1232 retval = usb_submit_urb(urb, GFP_ATOMIC);
1233 else if (tport->tp_read_urb_state == TI_READ_URB_STOPPING)
1234 tport->tp_read_urb_state = TI_READ_URB_STOPPED;
1235
1236 spin_unlock_irqrestore(&tport->tp_lock, flags);
1237 if (retval)
1238 dev_err(dev, "%s - resubmit read urb failed, %d\n",
1239 __func__, retval);
1240}
1241
1242
1243static void ti_bulk_out_callback(struct urb *urb)
1244{
1245 struct ti_port *tport = urb->context;
1246 struct usb_serial_port *port = tport->tp_port;
1247 int status = urb->status;
1248
1249 tport->tp_write_urb_in_use = 0;
1250
1251 switch (status) {
1252 case 0:
1253 break;
1254 case -ECONNRESET:
1255 case -ENOENT:
1256 case -ESHUTDOWN:
1257 dev_dbg(&port->dev, "%s - urb shutting down, %d\n", __func__, status);
1258 return;
1259 default:
1260 dev_err_console(port, "%s - nonzero urb status, %d\n",
1261 __func__, status);
1262 }
1263
1264 /* send any buffered data */
1265 ti_send(tport);
1266}
1267
1268
1269static void ti_recv(struct usb_serial_port *port, unsigned char *data,
1270 int length)
1271{
1272 int cnt;
1273
1274 do {
1275 cnt = tty_insert_flip_string(&port->port, data, length);
1276 if (cnt < length) {
1277 dev_err(&port->dev, "%s - dropping data, %d bytes lost\n",
1278 __func__, length - cnt);
1279 if (cnt == 0)
1280 break;
1281 }
1282 tty_flip_buffer_push(&port->port);
1283 data += cnt;
1284 length -= cnt;
1285 } while (length > 0);
1286}
1287
1288
1289static void ti_send(struct ti_port *tport)
1290{
1291 int count, result;
1292 struct usb_serial_port *port = tport->tp_port;
1293 unsigned long flags;
1294
1295 spin_lock_irqsave(&tport->tp_lock, flags);
1296
1297 if (tport->tp_write_urb_in_use)
1298 goto unlock;
1299
1300 count = kfifo_out(&port->write_fifo,
1301 port->write_urb->transfer_buffer,
1302 port->bulk_out_size);
1303
1304 if (count == 0)
1305 goto unlock;
1306
1307 tport->tp_write_urb_in_use = 1;
1308
1309 spin_unlock_irqrestore(&tport->tp_lock, flags);
1310
1311 usb_serial_debug_data(&port->dev, __func__, count,
1312 port->write_urb->transfer_buffer);
1313
1314 usb_fill_bulk_urb(port->write_urb, port->serial->dev,
1315 usb_sndbulkpipe(port->serial->dev,
1316 port->bulk_out_endpointAddress),
1317 port->write_urb->transfer_buffer, count,
1318 ti_bulk_out_callback, tport);
1319
1320 result = usb_submit_urb(port->write_urb, GFP_ATOMIC);
1321 if (result) {
1322 dev_err_console(port, "%s - submit write urb failed, %d\n",
1323 __func__, result);
1324 tport->tp_write_urb_in_use = 0;
1325 /* TODO: reschedule ti_send */
1326 } else {
1327 spin_lock_irqsave(&tport->tp_lock, flags);
1328 port->icount.tx += count;
1329 spin_unlock_irqrestore(&tport->tp_lock, flags);
1330 }
1331
1332 /* more room in the buffer for new writes, wakeup */
1333 tty_port_tty_wakeup(&port->port);
1334
1335 return;
1336unlock:
1337 spin_unlock_irqrestore(&tport->tp_lock, flags);
1338 return;
1339}
1340
1341
1342static int ti_set_mcr(struct ti_port *tport, unsigned int mcr)
1343{
1344 unsigned long flags;
1345 int status;
1346
1347 status = ti_write_byte(tport->tp_port, tport->tp_tdev,
1348 tport->tp_uart_base_addr + TI_UART_OFFSET_MCR,
1349 TI_MCR_RTS | TI_MCR_DTR | TI_MCR_LOOP, mcr);
1350
1351 spin_lock_irqsave(&tport->tp_lock, flags);
1352 if (!status)
1353 tport->tp_shadow_mcr = mcr;
1354 spin_unlock_irqrestore(&tport->tp_lock, flags);
1355
1356 return status;
1357}
1358
1359
1360static int ti_get_lsr(struct ti_port *tport, u8 *lsr)
1361{
1362 int size, status;
1363 struct usb_serial_port *port = tport->tp_port;
1364 struct ti_port_status *data;
1365
1366 size = sizeof(struct ti_port_status);
1367 data = kmalloc(size, GFP_KERNEL);
1368 if (!data)
1369 return -ENOMEM;
1370
1371 status = ti_port_cmd_in(port, TI_GET_PORT_STATUS, 0, data, size);
1372 if (status) {
1373 dev_err(&port->dev,
1374 "%s - get port status command failed, %d\n",
1375 __func__, status);
1376 goto free_data;
1377 }
1378
1379 dev_dbg(&port->dev, "%s - lsr 0x%02X\n", __func__, data->bLSR);
1380
1381 *lsr = data->bLSR;
1382
1383free_data:
1384 kfree(data);
1385 return status;
1386}
1387
1388
1389static void ti_get_serial_info(struct tty_struct *tty, struct serial_struct *ss)
1390{
1391 struct usb_serial_port *port = tty->driver_data;
1392 struct ti_port *tport = usb_get_serial_port_data(port);
1393
1394 ss->baud_base = tport->tp_tdev->td_is_3410 ? 921600 : 460800;
1395}
1396
1397
1398static void ti_handle_new_msr(struct ti_port *tport, u8 msr)
1399{
1400 struct async_icount *icount;
1401 struct tty_struct *tty;
1402 unsigned long flags;
1403
1404 dev_dbg(&tport->tp_port->dev, "%s - msr 0x%02X\n", __func__, msr);
1405
1406 if (msr & TI_MSR_DELTA_MASK) {
1407 spin_lock_irqsave(&tport->tp_lock, flags);
1408 icount = &tport->tp_port->icount;
1409 if (msr & TI_MSR_DELTA_CTS)
1410 icount->cts++;
1411 if (msr & TI_MSR_DELTA_DSR)
1412 icount->dsr++;
1413 if (msr & TI_MSR_DELTA_CD)
1414 icount->dcd++;
1415 if (msr & TI_MSR_DELTA_RI)
1416 icount->rng++;
1417 wake_up_interruptible(&tport->tp_port->port.delta_msr_wait);
1418 spin_unlock_irqrestore(&tport->tp_lock, flags);
1419 }
1420
1421 tport->tp_msr = msr & TI_MSR_MASK;
1422
1423 /* handle CTS flow control */
1424 tty = tty_port_tty_get(&tport->tp_port->port);
1425 if (tty && C_CRTSCTS(tty)) {
1426 if (msr & TI_MSR_CTS)
1427 tty_wakeup(tty);
1428 }
1429 tty_kref_put(tty);
1430}
1431
1432
1433static void ti_stop_read(struct ti_port *tport, struct tty_struct *tty)
1434{
1435 unsigned long flags;
1436
1437 spin_lock_irqsave(&tport->tp_lock, flags);
1438
1439 if (tport->tp_read_urb_state == TI_READ_URB_RUNNING)
1440 tport->tp_read_urb_state = TI_READ_URB_STOPPING;
1441
1442 spin_unlock_irqrestore(&tport->tp_lock, flags);
1443}
1444
1445
1446static int ti_restart_read(struct ti_port *tport, struct tty_struct *tty)
1447{
1448 struct urb *urb;
1449 int status = 0;
1450 unsigned long flags;
1451
1452 spin_lock_irqsave(&tport->tp_lock, flags);
1453
1454 if (tport->tp_read_urb_state == TI_READ_URB_STOPPED) {
1455 tport->tp_read_urb_state = TI_READ_URB_RUNNING;
1456 urb = tport->tp_port->read_urb;
1457 spin_unlock_irqrestore(&tport->tp_lock, flags);
1458 urb->context = tport;
1459 status = usb_submit_urb(urb, GFP_KERNEL);
1460 } else {
1461 tport->tp_read_urb_state = TI_READ_URB_RUNNING;
1462 spin_unlock_irqrestore(&tport->tp_lock, flags);
1463 }
1464
1465 return status;
1466}
1467
1468static int ti_command_out_sync(struct usb_device *udev, u8 command,
1469 u16 moduleid, u16 value, void *data, int size)
1470{
1471 int status;
1472
1473 status = usb_control_msg(udev, usb_sndctrlpipe(udev, 0), command,
1474 USB_TYPE_VENDOR | USB_RECIP_DEVICE | USB_DIR_OUT,
1475 value, moduleid, data, size, 1000);
1476 if (status < 0)
1477 return status;
1478
1479 return 0;
1480}
1481
1482static int ti_command_in_sync(struct usb_device *udev, u8 command,
1483 u16 moduleid, u16 value, void *data, int size)
1484{
1485 int status;
1486
1487 status = usb_control_msg(udev, usb_rcvctrlpipe(udev, 0), command,
1488 USB_TYPE_VENDOR | USB_RECIP_DEVICE | USB_DIR_IN,
1489 value, moduleid, data, size, 1000);
1490 if (status == size)
1491 status = 0;
1492 else if (status >= 0)
1493 status = -ECOMM;
1494
1495 return status;
1496}
1497
1498static int ti_port_cmd_out(struct usb_serial_port *port, u8 command,
1499 u16 value, void *data, int size)
1500{
1501 return ti_command_out_sync(port->serial->dev, command,
1502 TI_UART1_PORT + port->port_number,
1503 value, data, size);
1504}
1505
1506static int ti_port_cmd_in(struct usb_serial_port *port, u8 command,
1507 u16 value, void *data, int size)
1508{
1509 return ti_command_in_sync(port->serial->dev, command,
1510 TI_UART1_PORT + port->port_number,
1511 value, data, size);
1512}
1513
1514static int ti_write_byte(struct usb_serial_port *port,
1515 struct ti_device *tdev, unsigned long addr,
1516 u8 mask, u8 byte)
1517{
1518 int status;
1519 unsigned int size;
1520 struct ti_write_data_bytes *data;
1521
1522 dev_dbg(&port->dev, "%s - addr 0x%08lX, mask 0x%02X, byte 0x%02X\n", __func__,
1523 addr, mask, byte);
1524
1525 size = sizeof(struct ti_write_data_bytes) + 2;
1526 data = kmalloc(size, GFP_KERNEL);
1527 if (!data)
1528 return -ENOMEM;
1529
1530 data->bAddrType = TI_RW_DATA_ADDR_XDATA;
1531 data->bDataType = TI_RW_DATA_BYTE;
1532 data->bDataCounter = 1;
1533 data->wBaseAddrHi = cpu_to_be16(addr>>16);
1534 data->wBaseAddrLo = cpu_to_be16(addr);
1535 data->bData[0] = mask;
1536 data->bData[1] = byte;
1537
1538 status = ti_command_out_sync(port->serial->dev, TI_WRITE_DATA,
1539 TI_RAM_PORT, 0, data, size);
1540 if (status < 0)
1541 dev_err(&port->dev, "%s - failed, %d\n", __func__, status);
1542
1543 kfree(data);
1544
1545 return status;
1546}
1547
1548static int ti_do_download(struct usb_device *dev, int pipe,
1549 u8 *buffer, int size)
1550{
1551 int pos;
1552 u8 cs = 0;
1553 int done;
1554 struct ti_firmware_header *header;
1555 int status = 0;
1556 int len;
1557
1558 for (pos = sizeof(struct ti_firmware_header); pos < size; pos++)
1559 cs = (u8)(cs + buffer[pos]);
1560
1561 header = (struct ti_firmware_header *)buffer;
1562 header->wLength = cpu_to_le16(size - sizeof(*header));
1563 header->bCheckSum = cs;
1564
1565 dev_dbg(&dev->dev, "%s - downloading firmware\n", __func__);
1566 for (pos = 0; pos < size; pos += done) {
1567 len = min(size - pos, TI_DOWNLOAD_MAX_PACKET_SIZE);
1568 status = usb_bulk_msg(dev, pipe, buffer + pos, len,
1569 &done, 1000);
1570 if (status)
1571 break;
1572 }
1573 return status;
1574}
1575
1576static int ti_download_firmware(struct ti_device *tdev)
1577{
1578 int status;
1579 int buffer_size;
1580 u8 *buffer;
1581 struct usb_device *dev = tdev->td_serial->dev;
1582 unsigned int pipe = usb_sndbulkpipe(dev,
1583 tdev->td_serial->port[0]->bulk_out_endpointAddress);
1584 const struct firmware *fw_p;
1585 char buf[32];
1586
1587 if (le16_to_cpu(dev->descriptor.idVendor) == MXU1_VENDOR_ID) {
1588 snprintf(buf,
1589 sizeof(buf),
1590 "moxa/moxa-%04x.fw",
1591 le16_to_cpu(dev->descriptor.idProduct));
1592
1593 status = request_firmware(&fw_p, buf, &dev->dev);
1594 goto check_firmware;
1595 }
1596
1597 /* try ID specific firmware first, then try generic firmware */
1598 sprintf(buf, "ti_usb-v%04x-p%04x.fw",
1599 le16_to_cpu(dev->descriptor.idVendor),
1600 le16_to_cpu(dev->descriptor.idProduct));
1601 status = request_firmware(&fw_p, buf, &dev->dev);
1602
1603 if (status != 0) {
1604 buf[0] = '\0';
1605 if (le16_to_cpu(dev->descriptor.idVendor) == MTS_VENDOR_ID) {
1606 switch (le16_to_cpu(dev->descriptor.idProduct)) {
1607 case MTS_CDMA_PRODUCT_ID:
1608 strcpy(buf, "mts_cdma.fw");
1609 break;
1610 case MTS_GSM_PRODUCT_ID:
1611 strcpy(buf, "mts_gsm.fw");
1612 break;
1613 case MTS_EDGE_PRODUCT_ID:
1614 strcpy(buf, "mts_edge.fw");
1615 break;
1616 case MTS_MT9234MU_PRODUCT_ID:
1617 strcpy(buf, "mts_mt9234mu.fw");
1618 break;
1619 case MTS_MT9234ZBA_PRODUCT_ID:
1620 strcpy(buf, "mts_mt9234zba.fw");
1621 break;
1622 case MTS_MT9234ZBAOLD_PRODUCT_ID:
1623 strcpy(buf, "mts_mt9234zba.fw");
1624 break; }
1625 }
1626 if (buf[0] == '\0') {
1627 if (tdev->td_is_3410)
1628 strcpy(buf, "ti_3410.fw");
1629 else
1630 strcpy(buf, "ti_5052.fw");
1631 }
1632 status = request_firmware(&fw_p, buf, &dev->dev);
1633 }
1634
1635check_firmware:
1636 if (status) {
1637 dev_err(&dev->dev, "%s - firmware not found\n", __func__);
1638 return -ENOENT;
1639 }
1640 if (fw_p->size > TI_FIRMWARE_BUF_SIZE) {
1641 dev_err(&dev->dev, "%s - firmware too large %zu\n", __func__, fw_p->size);
1642 release_firmware(fw_p);
1643 return -ENOENT;
1644 }
1645
1646 buffer_size = TI_FIRMWARE_BUF_SIZE + sizeof(struct ti_firmware_header);
1647 buffer = kmalloc(buffer_size, GFP_KERNEL);
1648 if (buffer) {
1649 memcpy(buffer, fw_p->data, fw_p->size);
1650 memset(buffer + fw_p->size, 0xff, buffer_size - fw_p->size);
1651 status = ti_do_download(dev, pipe, buffer, fw_p->size);
1652 kfree(buffer);
1653 } else {
1654 status = -ENOMEM;
1655 }
1656 release_firmware(fw_p);
1657 if (status) {
1658 dev_err(&dev->dev, "%s - error downloading firmware, %d\n",
1659 __func__, status);
1660 return status;
1661 }
1662
1663 dev_dbg(&dev->dev, "%s - download successful\n", __func__);
1664
1665 return 0;
1666}
1/* vi: ts=8 sw=8
2 *
3 * TI 3410/5052 USB Serial Driver
4 *
5 * Copyright (C) 2004 Texas Instruments
6 *
7 * This driver is based on the Linux io_ti driver, which is
8 * Copyright (C) 2000-2002 Inside Out Networks
9 * Copyright (C) 2001-2002 Greg Kroah-Hartman
10 *
11 * This program is free software; you can redistribute it and/or modify
12 * it under the terms of the GNU General Public License as published by
13 * the Free Software Foundation; either version 2 of the License, or
14 * (at your option) any later version.
15 *
16 * For questions or problems with this driver, contact Texas Instruments
17 * technical support, or Al Borchers <alborchers@steinerpoint.com>, or
18 * Peter Berger <pberger@brimson.com>.
19 */
20
21#include <linux/kernel.h>
22#include <linux/errno.h>
23#include <linux/firmware.h>
24#include <linux/init.h>
25#include <linux/slab.h>
26#include <linux/tty.h>
27#include <linux/tty_driver.h>
28#include <linux/tty_flip.h>
29#include <linux/module.h>
30#include <linux/spinlock.h>
31#include <linux/ioctl.h>
32#include <linux/serial.h>
33#include <linux/kfifo.h>
34#include <linux/mutex.h>
35#include <linux/uaccess.h>
36#include <linux/usb.h>
37#include <linux/usb/serial.h>
38
39#include "ti_usb_3410_5052.h"
40
41/* Defines */
42
43#define TI_DRIVER_VERSION "v0.10"
44#define TI_DRIVER_AUTHOR "Al Borchers <alborchers@steinerpoint.com>"
45#define TI_DRIVER_DESC "TI USB 3410/5052 Serial Driver"
46
47#define TI_FIRMWARE_BUF_SIZE 16284
48
49#define TI_WRITE_BUF_SIZE 1024
50
51#define TI_TRANSFER_TIMEOUT 2
52
53#define TI_DEFAULT_CLOSING_WAIT 4000 /* in .01 secs */
54
55/* supported setserial flags */
56#define TI_SET_SERIAL_FLAGS 0
57
58/* read urb states */
59#define TI_READ_URB_RUNNING 0
60#define TI_READ_URB_STOPPING 1
61#define TI_READ_URB_STOPPED 2
62
63#define TI_EXTRA_VID_PID_COUNT 5
64
65
66/* Structures */
67
68struct ti_port {
69 int tp_is_open;
70 __u8 tp_msr;
71 __u8 tp_lsr;
72 __u8 tp_shadow_mcr;
73 __u8 tp_uart_mode; /* 232 or 485 modes */
74 unsigned int tp_uart_base_addr;
75 int tp_flags;
76 int tp_closing_wait;/* in .01 secs */
77 struct async_icount tp_icount;
78 wait_queue_head_t tp_msr_wait; /* wait for msr change */
79 wait_queue_head_t tp_write_wait;
80 struct ti_device *tp_tdev;
81 struct usb_serial_port *tp_port;
82 spinlock_t tp_lock;
83 int tp_read_urb_state;
84 int tp_write_urb_in_use;
85 struct kfifo write_fifo;
86};
87
88struct ti_device {
89 struct mutex td_open_close_lock;
90 int td_open_port_count;
91 struct usb_serial *td_serial;
92 int td_is_3410;
93 int td_urb_error;
94};
95
96
97/* Function Declarations */
98
99static int ti_startup(struct usb_serial *serial);
100static void ti_release(struct usb_serial *serial);
101static int ti_open(struct tty_struct *tty, struct usb_serial_port *port);
102static void ti_close(struct usb_serial_port *port);
103static int ti_write(struct tty_struct *tty, struct usb_serial_port *port,
104 const unsigned char *data, int count);
105static int ti_write_room(struct tty_struct *tty);
106static int ti_chars_in_buffer(struct tty_struct *tty);
107static void ti_throttle(struct tty_struct *tty);
108static void ti_unthrottle(struct tty_struct *tty);
109static int ti_ioctl(struct tty_struct *tty,
110 unsigned int cmd, unsigned long arg);
111static int ti_get_icount(struct tty_struct *tty,
112 struct serial_icounter_struct *icount);
113static void ti_set_termios(struct tty_struct *tty,
114 struct usb_serial_port *port, struct ktermios *old_termios);
115static int ti_tiocmget(struct tty_struct *tty);
116static int ti_tiocmset(struct tty_struct *tty,
117 unsigned int set, unsigned int clear);
118static void ti_break(struct tty_struct *tty, int break_state);
119static void ti_interrupt_callback(struct urb *urb);
120static void ti_bulk_in_callback(struct urb *urb);
121static void ti_bulk_out_callback(struct urb *urb);
122
123static void ti_recv(struct device *dev, struct tty_struct *tty,
124 unsigned char *data, int length);
125static void ti_send(struct ti_port *tport);
126static int ti_set_mcr(struct ti_port *tport, unsigned int mcr);
127static int ti_get_lsr(struct ti_port *tport);
128static int ti_get_serial_info(struct ti_port *tport,
129 struct serial_struct __user *ret_arg);
130static int ti_set_serial_info(struct tty_struct *tty, struct ti_port *tport,
131 struct serial_struct __user *new_arg);
132static void ti_handle_new_msr(struct ti_port *tport, __u8 msr);
133
134static void ti_drain(struct ti_port *tport, unsigned long timeout, int flush);
135
136static void ti_stop_read(struct ti_port *tport, struct tty_struct *tty);
137static int ti_restart_read(struct ti_port *tport, struct tty_struct *tty);
138
139static int ti_command_out_sync(struct ti_device *tdev, __u8 command,
140 __u16 moduleid, __u16 value, __u8 *data, int size);
141static int ti_command_in_sync(struct ti_device *tdev, __u8 command,
142 __u16 moduleid, __u16 value, __u8 *data, int size);
143
144static int ti_write_byte(struct ti_device *tdev, unsigned long addr,
145 __u8 mask, __u8 byte);
146
147static int ti_download_firmware(struct ti_device *tdev);
148
149
150/* Data */
151
152/* module parameters */
153static int debug;
154static int closing_wait = TI_DEFAULT_CLOSING_WAIT;
155static ushort vendor_3410[TI_EXTRA_VID_PID_COUNT];
156static unsigned int vendor_3410_count;
157static ushort product_3410[TI_EXTRA_VID_PID_COUNT];
158static unsigned int product_3410_count;
159static ushort vendor_5052[TI_EXTRA_VID_PID_COUNT];
160static unsigned int vendor_5052_count;
161static ushort product_5052[TI_EXTRA_VID_PID_COUNT];
162static unsigned int product_5052_count;
163
164/* supported devices */
165/* the array dimension is the number of default entries plus */
166/* TI_EXTRA_VID_PID_COUNT user defined entries plus 1 terminating */
167/* null entry */
168static struct usb_device_id ti_id_table_3410[13+TI_EXTRA_VID_PID_COUNT+1] = {
169 { USB_DEVICE(TI_VENDOR_ID, TI_3410_PRODUCT_ID) },
170 { USB_DEVICE(TI_VENDOR_ID, TI_3410_EZ430_ID) },
171 { USB_DEVICE(MTS_VENDOR_ID, MTS_GSM_NO_FW_PRODUCT_ID) },
172 { USB_DEVICE(MTS_VENDOR_ID, MTS_CDMA_NO_FW_PRODUCT_ID) },
173 { USB_DEVICE(MTS_VENDOR_ID, MTS_CDMA_PRODUCT_ID) },
174 { USB_DEVICE(MTS_VENDOR_ID, MTS_GSM_PRODUCT_ID) },
175 { USB_DEVICE(MTS_VENDOR_ID, MTS_EDGE_PRODUCT_ID) },
176 { USB_DEVICE(MTS_VENDOR_ID, MTS_MT9234MU_PRODUCT_ID) },
177 { USB_DEVICE(MTS_VENDOR_ID, MTS_MT9234ZBA_PRODUCT_ID) },
178 { USB_DEVICE(MTS_VENDOR_ID, MTS_MT9234ZBAOLD_PRODUCT_ID) },
179 { USB_DEVICE(IBM_VENDOR_ID, IBM_4543_PRODUCT_ID) },
180 { USB_DEVICE(IBM_VENDOR_ID, IBM_454B_PRODUCT_ID) },
181 { USB_DEVICE(IBM_VENDOR_ID, IBM_454C_PRODUCT_ID) },
182};
183
184static struct usb_device_id ti_id_table_5052[5+TI_EXTRA_VID_PID_COUNT+1] = {
185 { USB_DEVICE(TI_VENDOR_ID, TI_5052_BOOT_PRODUCT_ID) },
186 { USB_DEVICE(TI_VENDOR_ID, TI_5152_BOOT_PRODUCT_ID) },
187 { USB_DEVICE(TI_VENDOR_ID, TI_5052_EEPROM_PRODUCT_ID) },
188 { USB_DEVICE(TI_VENDOR_ID, TI_5052_FIRMWARE_PRODUCT_ID) },
189};
190
191static struct usb_device_id ti_id_table_combined[17+2*TI_EXTRA_VID_PID_COUNT+1] = {
192 { USB_DEVICE(TI_VENDOR_ID, TI_3410_PRODUCT_ID) },
193 { USB_DEVICE(TI_VENDOR_ID, TI_3410_EZ430_ID) },
194 { USB_DEVICE(MTS_VENDOR_ID, MTS_GSM_NO_FW_PRODUCT_ID) },
195 { USB_DEVICE(MTS_VENDOR_ID, MTS_CDMA_NO_FW_PRODUCT_ID) },
196 { USB_DEVICE(MTS_VENDOR_ID, MTS_CDMA_PRODUCT_ID) },
197 { USB_DEVICE(MTS_VENDOR_ID, MTS_GSM_PRODUCT_ID) },
198 { USB_DEVICE(MTS_VENDOR_ID, MTS_EDGE_PRODUCT_ID) },
199 { USB_DEVICE(MTS_VENDOR_ID, MTS_MT9234MU_PRODUCT_ID) },
200 { USB_DEVICE(MTS_VENDOR_ID, MTS_MT9234ZBA_PRODUCT_ID) },
201 { USB_DEVICE(MTS_VENDOR_ID, MTS_MT9234ZBAOLD_PRODUCT_ID) },
202 { USB_DEVICE(TI_VENDOR_ID, TI_5052_BOOT_PRODUCT_ID) },
203 { USB_DEVICE(TI_VENDOR_ID, TI_5152_BOOT_PRODUCT_ID) },
204 { USB_DEVICE(TI_VENDOR_ID, TI_5052_EEPROM_PRODUCT_ID) },
205 { USB_DEVICE(TI_VENDOR_ID, TI_5052_FIRMWARE_PRODUCT_ID) },
206 { USB_DEVICE(IBM_VENDOR_ID, IBM_4543_PRODUCT_ID) },
207 { USB_DEVICE(IBM_VENDOR_ID, IBM_454B_PRODUCT_ID) },
208 { USB_DEVICE(IBM_VENDOR_ID, IBM_454C_PRODUCT_ID) },
209 { }
210};
211
212static struct usb_driver ti_usb_driver = {
213 .name = "ti_usb_3410_5052",
214 .probe = usb_serial_probe,
215 .disconnect = usb_serial_disconnect,
216 .id_table = ti_id_table_combined,
217 .no_dynamic_id = 1,
218};
219
220static struct usb_serial_driver ti_1port_device = {
221 .driver = {
222 .owner = THIS_MODULE,
223 .name = "ti_usb_3410_5052_1",
224 },
225 .description = "TI USB 3410 1 port adapter",
226 .usb_driver = &ti_usb_driver,
227 .id_table = ti_id_table_3410,
228 .num_ports = 1,
229 .attach = ti_startup,
230 .release = ti_release,
231 .open = ti_open,
232 .close = ti_close,
233 .write = ti_write,
234 .write_room = ti_write_room,
235 .chars_in_buffer = ti_chars_in_buffer,
236 .throttle = ti_throttle,
237 .unthrottle = ti_unthrottle,
238 .ioctl = ti_ioctl,
239 .set_termios = ti_set_termios,
240 .tiocmget = ti_tiocmget,
241 .tiocmset = ti_tiocmset,
242 .get_icount = ti_get_icount,
243 .break_ctl = ti_break,
244 .read_int_callback = ti_interrupt_callback,
245 .read_bulk_callback = ti_bulk_in_callback,
246 .write_bulk_callback = ti_bulk_out_callback,
247};
248
249static struct usb_serial_driver ti_2port_device = {
250 .driver = {
251 .owner = THIS_MODULE,
252 .name = "ti_usb_3410_5052_2",
253 },
254 .description = "TI USB 5052 2 port adapter",
255 .usb_driver = &ti_usb_driver,
256 .id_table = ti_id_table_5052,
257 .num_ports = 2,
258 .attach = ti_startup,
259 .release = ti_release,
260 .open = ti_open,
261 .close = ti_close,
262 .write = ti_write,
263 .write_room = ti_write_room,
264 .chars_in_buffer = ti_chars_in_buffer,
265 .throttle = ti_throttle,
266 .unthrottle = ti_unthrottle,
267 .ioctl = ti_ioctl,
268 .set_termios = ti_set_termios,
269 .tiocmget = ti_tiocmget,
270 .tiocmset = ti_tiocmset,
271 .get_icount = ti_get_icount,
272 .break_ctl = ti_break,
273 .read_int_callback = ti_interrupt_callback,
274 .read_bulk_callback = ti_bulk_in_callback,
275 .write_bulk_callback = ti_bulk_out_callback,
276};
277
278
279/* Module */
280
281MODULE_AUTHOR(TI_DRIVER_AUTHOR);
282MODULE_DESCRIPTION(TI_DRIVER_DESC);
283MODULE_VERSION(TI_DRIVER_VERSION);
284MODULE_LICENSE("GPL");
285
286MODULE_FIRMWARE("ti_3410.fw");
287MODULE_FIRMWARE("ti_5052.fw");
288MODULE_FIRMWARE("mts_cdma.fw");
289MODULE_FIRMWARE("mts_gsm.fw");
290MODULE_FIRMWARE("mts_edge.fw");
291MODULE_FIRMWARE("mts_mt9234mu.fw");
292MODULE_FIRMWARE("mts_mt9234zba.fw");
293
294module_param(debug, bool, S_IRUGO | S_IWUSR);
295MODULE_PARM_DESC(debug, "Enable debugging, 0=no, 1=yes");
296
297module_param(closing_wait, int, S_IRUGO | S_IWUSR);
298MODULE_PARM_DESC(closing_wait,
299 "Maximum wait for data to drain in close, in .01 secs, default is 4000");
300
301module_param_array(vendor_3410, ushort, &vendor_3410_count, S_IRUGO);
302MODULE_PARM_DESC(vendor_3410,
303 "Vendor ids for 3410 based devices, 1-5 short integers");
304module_param_array(product_3410, ushort, &product_3410_count, S_IRUGO);
305MODULE_PARM_DESC(product_3410,
306 "Product ids for 3410 based devices, 1-5 short integers");
307module_param_array(vendor_5052, ushort, &vendor_5052_count, S_IRUGO);
308MODULE_PARM_DESC(vendor_5052,
309 "Vendor ids for 5052 based devices, 1-5 short integers");
310module_param_array(product_5052, ushort, &product_5052_count, S_IRUGO);
311MODULE_PARM_DESC(product_5052,
312 "Product ids for 5052 based devices, 1-5 short integers");
313
314MODULE_DEVICE_TABLE(usb, ti_id_table_combined);
315
316
317/* Functions */
318
319static int __init ti_init(void)
320{
321 int i, j, c;
322 int ret;
323
324 /* insert extra vendor and product ids */
325 c = ARRAY_SIZE(ti_id_table_combined) - 2 * TI_EXTRA_VID_PID_COUNT - 1;
326 j = ARRAY_SIZE(ti_id_table_3410) - TI_EXTRA_VID_PID_COUNT - 1;
327 for (i = 0; i < min(vendor_3410_count, product_3410_count); i++, j++, c++) {
328 ti_id_table_3410[j].idVendor = vendor_3410[i];
329 ti_id_table_3410[j].idProduct = product_3410[i];
330 ti_id_table_3410[j].match_flags = USB_DEVICE_ID_MATCH_DEVICE;
331 ti_id_table_combined[c].idVendor = vendor_3410[i];
332 ti_id_table_combined[c].idProduct = product_3410[i];
333 ti_id_table_combined[c].match_flags = USB_DEVICE_ID_MATCH_DEVICE;
334 }
335 j = ARRAY_SIZE(ti_id_table_5052) - TI_EXTRA_VID_PID_COUNT - 1;
336 for (i = 0; i < min(vendor_5052_count, product_5052_count); i++, j++, c++) {
337 ti_id_table_5052[j].idVendor = vendor_5052[i];
338 ti_id_table_5052[j].idProduct = product_5052[i];
339 ti_id_table_5052[j].match_flags = USB_DEVICE_ID_MATCH_DEVICE;
340 ti_id_table_combined[c].idVendor = vendor_5052[i];
341 ti_id_table_combined[c].idProduct = product_5052[i];
342 ti_id_table_combined[c].match_flags = USB_DEVICE_ID_MATCH_DEVICE;
343 }
344
345 ret = usb_serial_register(&ti_1port_device);
346 if (ret)
347 goto failed_1port;
348 ret = usb_serial_register(&ti_2port_device);
349 if (ret)
350 goto failed_2port;
351
352 ret = usb_register(&ti_usb_driver);
353 if (ret)
354 goto failed_usb;
355
356 printk(KERN_INFO KBUILD_MODNAME ": " TI_DRIVER_VERSION ":"
357 TI_DRIVER_DESC "\n");
358
359 return 0;
360
361failed_usb:
362 usb_serial_deregister(&ti_2port_device);
363failed_2port:
364 usb_serial_deregister(&ti_1port_device);
365failed_1port:
366 return ret;
367}
368
369
370static void __exit ti_exit(void)
371{
372 usb_deregister(&ti_usb_driver);
373 usb_serial_deregister(&ti_1port_device);
374 usb_serial_deregister(&ti_2port_device);
375}
376
377
378module_init(ti_init);
379module_exit(ti_exit);
380
381
382static int ti_startup(struct usb_serial *serial)
383{
384 struct ti_device *tdev;
385 struct ti_port *tport;
386 struct usb_device *dev = serial->dev;
387 int status;
388 int i;
389
390
391 dbg("%s - product 0x%4X, num configurations %d, configuration value %d",
392 __func__, le16_to_cpu(dev->descriptor.idProduct),
393 dev->descriptor.bNumConfigurations,
394 dev->actconfig->desc.bConfigurationValue);
395
396 /* create device structure */
397 tdev = kzalloc(sizeof(struct ti_device), GFP_KERNEL);
398 if (tdev == NULL) {
399 dev_err(&dev->dev, "%s - out of memory\n", __func__);
400 return -ENOMEM;
401 }
402 mutex_init(&tdev->td_open_close_lock);
403 tdev->td_serial = serial;
404 usb_set_serial_data(serial, tdev);
405
406 /* determine device type */
407 if (usb_match_id(serial->interface, ti_id_table_3410))
408 tdev->td_is_3410 = 1;
409 dbg("%s - device type is %s", __func__,
410 tdev->td_is_3410 ? "3410" : "5052");
411
412 /* if we have only 1 configuration, download firmware */
413 if (dev->descriptor.bNumConfigurations == 1) {
414 if ((status = ti_download_firmware(tdev)) != 0)
415 goto free_tdev;
416
417 /* 3410 must be reset, 5052 resets itself */
418 if (tdev->td_is_3410) {
419 msleep_interruptible(100);
420 usb_reset_device(dev);
421 }
422
423 status = -ENODEV;
424 goto free_tdev;
425 }
426
427 /* the second configuration must be set */
428 if (dev->actconfig->desc.bConfigurationValue == TI_BOOT_CONFIG) {
429 status = usb_driver_set_configuration(dev, TI_ACTIVE_CONFIG);
430 status = status ? status : -ENODEV;
431 goto free_tdev;
432 }
433
434 /* set up port structures */
435 for (i = 0; i < serial->num_ports; ++i) {
436 tport = kzalloc(sizeof(struct ti_port), GFP_KERNEL);
437 if (tport == NULL) {
438 dev_err(&dev->dev, "%s - out of memory\n", __func__);
439 status = -ENOMEM;
440 goto free_tports;
441 }
442 spin_lock_init(&tport->tp_lock);
443 tport->tp_uart_base_addr = (i == 0 ?
444 TI_UART1_BASE_ADDR : TI_UART2_BASE_ADDR);
445 tport->tp_closing_wait = closing_wait;
446 init_waitqueue_head(&tport->tp_msr_wait);
447 init_waitqueue_head(&tport->tp_write_wait);
448 if (kfifo_alloc(&tport->write_fifo, TI_WRITE_BUF_SIZE,
449 GFP_KERNEL)) {
450 dev_err(&dev->dev, "%s - out of memory\n", __func__);
451 kfree(tport);
452 status = -ENOMEM;
453 goto free_tports;
454 }
455 tport->tp_port = serial->port[i];
456 tport->tp_tdev = tdev;
457 usb_set_serial_port_data(serial->port[i], tport);
458 tport->tp_uart_mode = 0; /* default is RS232 */
459 }
460
461 return 0;
462
463free_tports:
464 for (--i; i >= 0; --i) {
465 tport = usb_get_serial_port_data(serial->port[i]);
466 kfifo_free(&tport->write_fifo);
467 kfree(tport);
468 usb_set_serial_port_data(serial->port[i], NULL);
469 }
470free_tdev:
471 kfree(tdev);
472 usb_set_serial_data(serial, NULL);
473 return status;
474}
475
476
477static void ti_release(struct usb_serial *serial)
478{
479 int i;
480 struct ti_device *tdev = usb_get_serial_data(serial);
481 struct ti_port *tport;
482
483 dbg("%s", __func__);
484
485 for (i = 0; i < serial->num_ports; ++i) {
486 tport = usb_get_serial_port_data(serial->port[i]);
487 if (tport) {
488 kfifo_free(&tport->write_fifo);
489 kfree(tport);
490 }
491 }
492
493 kfree(tdev);
494}
495
496
497static int ti_open(struct tty_struct *tty, struct usb_serial_port *port)
498{
499 struct ti_port *tport = usb_get_serial_port_data(port);
500 struct ti_device *tdev;
501 struct usb_device *dev;
502 struct urb *urb;
503 int port_number;
504 int status;
505 __u16 open_settings = (__u8)(TI_PIPE_MODE_CONTINOUS |
506 TI_PIPE_TIMEOUT_ENABLE |
507 (TI_TRANSFER_TIMEOUT << 2));
508
509 dbg("%s - port %d", __func__, port->number);
510
511 if (tport == NULL)
512 return -ENODEV;
513
514 dev = port->serial->dev;
515 tdev = tport->tp_tdev;
516
517 /* only one open on any port on a device at a time */
518 if (mutex_lock_interruptible(&tdev->td_open_close_lock))
519 return -ERESTARTSYS;
520
521 port_number = port->number - port->serial->minor;
522
523 memset(&(tport->tp_icount), 0x00, sizeof(tport->tp_icount));
524
525 tport->tp_msr = 0;
526 tport->tp_shadow_mcr |= (TI_MCR_RTS | TI_MCR_DTR);
527
528 /* start interrupt urb the first time a port is opened on this device */
529 if (tdev->td_open_port_count == 0) {
530 dbg("%s - start interrupt in urb", __func__);
531 urb = tdev->td_serial->port[0]->interrupt_in_urb;
532 if (!urb) {
533 dev_err(&port->dev, "%s - no interrupt urb\n",
534 __func__);
535 status = -EINVAL;
536 goto release_lock;
537 }
538 urb->complete = ti_interrupt_callback;
539 urb->context = tdev;
540 urb->dev = dev;
541 status = usb_submit_urb(urb, GFP_KERNEL);
542 if (status) {
543 dev_err(&port->dev,
544 "%s - submit interrupt urb failed, %d\n",
545 __func__, status);
546 goto release_lock;
547 }
548 }
549
550 if (tty)
551 ti_set_termios(tty, port, tty->termios);
552
553 dbg("%s - sending TI_OPEN_PORT", __func__);
554 status = ti_command_out_sync(tdev, TI_OPEN_PORT,
555 (__u8)(TI_UART1_PORT + port_number), open_settings, NULL, 0);
556 if (status) {
557 dev_err(&port->dev, "%s - cannot send open command, %d\n",
558 __func__, status);
559 goto unlink_int_urb;
560 }
561
562 dbg("%s - sending TI_START_PORT", __func__);
563 status = ti_command_out_sync(tdev, TI_START_PORT,
564 (__u8)(TI_UART1_PORT + port_number), 0, NULL, 0);
565 if (status) {
566 dev_err(&port->dev, "%s - cannot send start command, %d\n",
567 __func__, status);
568 goto unlink_int_urb;
569 }
570
571 dbg("%s - sending TI_PURGE_PORT", __func__);
572 status = ti_command_out_sync(tdev, TI_PURGE_PORT,
573 (__u8)(TI_UART1_PORT + port_number), TI_PURGE_INPUT, NULL, 0);
574 if (status) {
575 dev_err(&port->dev, "%s - cannot clear input buffers, %d\n",
576 __func__, status);
577 goto unlink_int_urb;
578 }
579 status = ti_command_out_sync(tdev, TI_PURGE_PORT,
580 (__u8)(TI_UART1_PORT + port_number), TI_PURGE_OUTPUT, NULL, 0);
581 if (status) {
582 dev_err(&port->dev, "%s - cannot clear output buffers, %d\n",
583 __func__, status);
584 goto unlink_int_urb;
585 }
586
587 /* reset the data toggle on the bulk endpoints to work around bug in
588 * host controllers where things get out of sync some times */
589 usb_clear_halt(dev, port->write_urb->pipe);
590 usb_clear_halt(dev, port->read_urb->pipe);
591
592 if (tty)
593 ti_set_termios(tty, port, tty->termios);
594
595 dbg("%s - sending TI_OPEN_PORT (2)", __func__);
596 status = ti_command_out_sync(tdev, TI_OPEN_PORT,
597 (__u8)(TI_UART1_PORT + port_number), open_settings, NULL, 0);
598 if (status) {
599 dev_err(&port->dev, "%s - cannot send open command (2), %d\n",
600 __func__, status);
601 goto unlink_int_urb;
602 }
603
604 dbg("%s - sending TI_START_PORT (2)", __func__);
605 status = ti_command_out_sync(tdev, TI_START_PORT,
606 (__u8)(TI_UART1_PORT + port_number), 0, NULL, 0);
607 if (status) {
608 dev_err(&port->dev, "%s - cannot send start command (2), %d\n",
609 __func__, status);
610 goto unlink_int_urb;
611 }
612
613 /* start read urb */
614 dbg("%s - start read urb", __func__);
615 urb = port->read_urb;
616 if (!urb) {
617 dev_err(&port->dev, "%s - no read urb\n", __func__);
618 status = -EINVAL;
619 goto unlink_int_urb;
620 }
621 tport->tp_read_urb_state = TI_READ_URB_RUNNING;
622 urb->complete = ti_bulk_in_callback;
623 urb->context = tport;
624 urb->dev = dev;
625 status = usb_submit_urb(urb, GFP_KERNEL);
626 if (status) {
627 dev_err(&port->dev, "%s - submit read urb failed, %d\n",
628 __func__, status);
629 goto unlink_int_urb;
630 }
631
632 tport->tp_is_open = 1;
633 ++tdev->td_open_port_count;
634
635 goto release_lock;
636
637unlink_int_urb:
638 if (tdev->td_open_port_count == 0)
639 usb_kill_urb(port->serial->port[0]->interrupt_in_urb);
640release_lock:
641 mutex_unlock(&tdev->td_open_close_lock);
642 dbg("%s - exit %d", __func__, status);
643 return status;
644}
645
646
647static void ti_close(struct usb_serial_port *port)
648{
649 struct ti_device *tdev;
650 struct ti_port *tport;
651 int port_number;
652 int status;
653 int do_unlock;
654
655 dbg("%s - port %d", __func__, port->number);
656
657 tdev = usb_get_serial_data(port->serial);
658 tport = usb_get_serial_port_data(port);
659 if (tdev == NULL || tport == NULL)
660 return;
661
662 tport->tp_is_open = 0;
663
664 ti_drain(tport, (tport->tp_closing_wait*HZ)/100, 1);
665
666 usb_kill_urb(port->read_urb);
667 usb_kill_urb(port->write_urb);
668 tport->tp_write_urb_in_use = 0;
669
670 port_number = port->number - port->serial->minor;
671
672 dbg("%s - sending TI_CLOSE_PORT", __func__);
673 status = ti_command_out_sync(tdev, TI_CLOSE_PORT,
674 (__u8)(TI_UART1_PORT + port_number), 0, NULL, 0);
675 if (status)
676 dev_err(&port->dev,
677 "%s - cannot send close port command, %d\n"
678 , __func__, status);
679
680 /* if mutex_lock is interrupted, continue anyway */
681 do_unlock = !mutex_lock_interruptible(&tdev->td_open_close_lock);
682 --tport->tp_tdev->td_open_port_count;
683 if (tport->tp_tdev->td_open_port_count <= 0) {
684 /* last port is closed, shut down interrupt urb */
685 usb_kill_urb(port->serial->port[0]->interrupt_in_urb);
686 tport->tp_tdev->td_open_port_count = 0;
687 }
688 if (do_unlock)
689 mutex_unlock(&tdev->td_open_close_lock);
690
691 dbg("%s - exit", __func__);
692}
693
694
695static int ti_write(struct tty_struct *tty, struct usb_serial_port *port,
696 const unsigned char *data, int count)
697{
698 struct ti_port *tport = usb_get_serial_port_data(port);
699
700 dbg("%s - port %d", __func__, port->number);
701
702 if (count == 0) {
703 dbg("%s - write request of 0 bytes", __func__);
704 return 0;
705 }
706
707 if (tport == NULL || !tport->tp_is_open)
708 return -ENODEV;
709
710 count = kfifo_in_locked(&tport->write_fifo, data, count,
711 &tport->tp_lock);
712 ti_send(tport);
713
714 return count;
715}
716
717
718static int ti_write_room(struct tty_struct *tty)
719{
720 struct usb_serial_port *port = tty->driver_data;
721 struct ti_port *tport = usb_get_serial_port_data(port);
722 int room = 0;
723 unsigned long flags;
724
725 dbg("%s - port %d", __func__, port->number);
726
727 if (tport == NULL)
728 return 0;
729
730 spin_lock_irqsave(&tport->tp_lock, flags);
731 room = kfifo_avail(&tport->write_fifo);
732 spin_unlock_irqrestore(&tport->tp_lock, flags);
733
734 dbg("%s - returns %d", __func__, room);
735 return room;
736}
737
738
739static int ti_chars_in_buffer(struct tty_struct *tty)
740{
741 struct usb_serial_port *port = tty->driver_data;
742 struct ti_port *tport = usb_get_serial_port_data(port);
743 int chars = 0;
744 unsigned long flags;
745
746 dbg("%s - port %d", __func__, port->number);
747
748 if (tport == NULL)
749 return 0;
750
751 spin_lock_irqsave(&tport->tp_lock, flags);
752 chars = kfifo_len(&tport->write_fifo);
753 spin_unlock_irqrestore(&tport->tp_lock, flags);
754
755 dbg("%s - returns %d", __func__, chars);
756 return chars;
757}
758
759
760static void ti_throttle(struct tty_struct *tty)
761{
762 struct usb_serial_port *port = tty->driver_data;
763 struct ti_port *tport = usb_get_serial_port_data(port);
764
765 dbg("%s - port %d", __func__, port->number);
766
767 if (tport == NULL)
768 return;
769
770 if (I_IXOFF(tty) || C_CRTSCTS(tty))
771 ti_stop_read(tport, tty);
772
773}
774
775
776static void ti_unthrottle(struct tty_struct *tty)
777{
778 struct usb_serial_port *port = tty->driver_data;
779 struct ti_port *tport = usb_get_serial_port_data(port);
780 int status;
781
782 dbg("%s - port %d", __func__, port->number);
783
784 if (tport == NULL)
785 return;
786
787 if (I_IXOFF(tty) || C_CRTSCTS(tty)) {
788 status = ti_restart_read(tport, tty);
789 if (status)
790 dev_err(&port->dev, "%s - cannot restart read, %d\n",
791 __func__, status);
792 }
793}
794
795static int ti_get_icount(struct tty_struct *tty,
796 struct serial_icounter_struct *icount)
797{
798 struct usb_serial_port *port = tty->driver_data;
799 struct ti_port *tport = usb_get_serial_port_data(port);
800 struct async_icount cnow = tport->tp_icount;
801
802 dbg("%s - (%d) TIOCGICOUNT RX=%d, TX=%d",
803 __func__, port->number,
804 cnow.rx, cnow.tx);
805
806 icount->cts = cnow.cts;
807 icount->dsr = cnow.dsr;
808 icount->rng = cnow.rng;
809 icount->dcd = cnow.dcd;
810 icount->rx = cnow.rx;
811 icount->tx = cnow.tx;
812 icount->frame = cnow.frame;
813 icount->overrun = cnow.overrun;
814 icount->parity = cnow.parity;
815 icount->brk = cnow.brk;
816 icount->buf_overrun = cnow.buf_overrun;
817
818 return 0;
819}
820
821static int ti_ioctl(struct tty_struct *tty,
822 unsigned int cmd, unsigned long arg)
823{
824 struct usb_serial_port *port = tty->driver_data;
825 struct ti_port *tport = usb_get_serial_port_data(port);
826 struct async_icount cnow;
827 struct async_icount cprev;
828
829 dbg("%s - port %d, cmd = 0x%04X", __func__, port->number, cmd);
830
831 if (tport == NULL)
832 return -ENODEV;
833
834 switch (cmd) {
835 case TIOCGSERIAL:
836 dbg("%s - (%d) TIOCGSERIAL", __func__, port->number);
837 return ti_get_serial_info(tport,
838 (struct serial_struct __user *)arg);
839 case TIOCSSERIAL:
840 dbg("%s - (%d) TIOCSSERIAL", __func__, port->number);
841 return ti_set_serial_info(tty, tport,
842 (struct serial_struct __user *)arg);
843 case TIOCMIWAIT:
844 dbg("%s - (%d) TIOCMIWAIT", __func__, port->number);
845 cprev = tport->tp_icount;
846 while (1) {
847 interruptible_sleep_on(&tport->tp_msr_wait);
848 if (signal_pending(current))
849 return -ERESTARTSYS;
850 cnow = tport->tp_icount;
851 if (cnow.rng == cprev.rng && cnow.dsr == cprev.dsr &&
852 cnow.dcd == cprev.dcd && cnow.cts == cprev.cts)
853 return -EIO; /* no change => error */
854 if (((arg & TIOCM_RNG) && (cnow.rng != cprev.rng)) ||
855 ((arg & TIOCM_DSR) && (cnow.dsr != cprev.dsr)) ||
856 ((arg & TIOCM_CD) && (cnow.dcd != cprev.dcd)) ||
857 ((arg & TIOCM_CTS) && (cnow.cts != cprev.cts)))
858 return 0;
859 cprev = cnow;
860 }
861 break;
862 }
863 return -ENOIOCTLCMD;
864}
865
866
867static void ti_set_termios(struct tty_struct *tty,
868 struct usb_serial_port *port, struct ktermios *old_termios)
869{
870 struct ti_port *tport = usb_get_serial_port_data(port);
871 struct ti_uart_config *config;
872 tcflag_t cflag, iflag;
873 int baud;
874 int status;
875 int port_number = port->number - port->serial->minor;
876 unsigned int mcr;
877
878 dbg("%s - port %d", __func__, port->number);
879
880 cflag = tty->termios->c_cflag;
881 iflag = tty->termios->c_iflag;
882
883 dbg("%s - cflag %08x, iflag %08x", __func__, cflag, iflag);
884 dbg("%s - old clfag %08x, old iflag %08x", __func__,
885 old_termios->c_cflag, old_termios->c_iflag);
886
887 if (tport == NULL)
888 return;
889
890 config = kmalloc(sizeof(*config), GFP_KERNEL);
891 if (!config) {
892 dev_err(&port->dev, "%s - out of memory\n", __func__);
893 return;
894 }
895
896 config->wFlags = 0;
897
898 /* these flags must be set */
899 config->wFlags |= TI_UART_ENABLE_MS_INTS;
900 config->wFlags |= TI_UART_ENABLE_AUTO_START_DMA;
901 config->bUartMode = (__u8)(tport->tp_uart_mode);
902
903 switch (cflag & CSIZE) {
904 case CS5:
905 config->bDataBits = TI_UART_5_DATA_BITS;
906 break;
907 case CS6:
908 config->bDataBits = TI_UART_6_DATA_BITS;
909 break;
910 case CS7:
911 config->bDataBits = TI_UART_7_DATA_BITS;
912 break;
913 default:
914 case CS8:
915 config->bDataBits = TI_UART_8_DATA_BITS;
916 break;
917 }
918
919 /* CMSPAR isn't supported by this driver */
920 tty->termios->c_cflag &= ~CMSPAR;
921
922 if (cflag & PARENB) {
923 if (cflag & PARODD) {
924 config->wFlags |= TI_UART_ENABLE_PARITY_CHECKING;
925 config->bParity = TI_UART_ODD_PARITY;
926 } else {
927 config->wFlags |= TI_UART_ENABLE_PARITY_CHECKING;
928 config->bParity = TI_UART_EVEN_PARITY;
929 }
930 } else {
931 config->wFlags &= ~TI_UART_ENABLE_PARITY_CHECKING;
932 config->bParity = TI_UART_NO_PARITY;
933 }
934
935 if (cflag & CSTOPB)
936 config->bStopBits = TI_UART_2_STOP_BITS;
937 else
938 config->bStopBits = TI_UART_1_STOP_BITS;
939
940 if (cflag & CRTSCTS) {
941 /* RTS flow control must be off to drop RTS for baud rate B0 */
942 if ((cflag & CBAUD) != B0)
943 config->wFlags |= TI_UART_ENABLE_RTS_IN;
944 config->wFlags |= TI_UART_ENABLE_CTS_OUT;
945 } else {
946 tty->hw_stopped = 0;
947 ti_restart_read(tport, tty);
948 }
949
950 if (I_IXOFF(tty) || I_IXON(tty)) {
951 config->cXon = START_CHAR(tty);
952 config->cXoff = STOP_CHAR(tty);
953
954 if (I_IXOFF(tty))
955 config->wFlags |= TI_UART_ENABLE_X_IN;
956 else
957 ti_restart_read(tport, tty);
958
959 if (I_IXON(tty))
960 config->wFlags |= TI_UART_ENABLE_X_OUT;
961 }
962
963 baud = tty_get_baud_rate(tty);
964 if (!baud)
965 baud = 9600;
966 if (tport->tp_tdev->td_is_3410)
967 config->wBaudRate = (__u16)((923077 + baud/2) / baud);
968 else
969 config->wBaudRate = (__u16)((461538 + baud/2) / baud);
970
971 /* FIXME: Should calculate resulting baud here and report it back */
972 if ((cflag & CBAUD) != B0)
973 tty_encode_baud_rate(tty, baud, baud);
974
975 dbg("%s - BaudRate=%d, wBaudRate=%d, wFlags=0x%04X, bDataBits=%d, bParity=%d, bStopBits=%d, cXon=%d, cXoff=%d, bUartMode=%d",
976 __func__, baud, config->wBaudRate, config->wFlags, config->bDataBits, config->bParity, config->bStopBits, config->cXon, config->cXoff, config->bUartMode);
977
978 cpu_to_be16s(&config->wBaudRate);
979 cpu_to_be16s(&config->wFlags);
980
981 status = ti_command_out_sync(tport->tp_tdev, TI_SET_CONFIG,
982 (__u8)(TI_UART1_PORT + port_number), 0, (__u8 *)config,
983 sizeof(*config));
984 if (status)
985 dev_err(&port->dev, "%s - cannot set config on port %d, %d\n",
986 __func__, port_number, status);
987
988 /* SET_CONFIG asserts RTS and DTR, reset them correctly */
989 mcr = tport->tp_shadow_mcr;
990 /* if baud rate is B0, clear RTS and DTR */
991 if ((cflag & CBAUD) == B0)
992 mcr &= ~(TI_MCR_DTR | TI_MCR_RTS);
993 status = ti_set_mcr(tport, mcr);
994 if (status)
995 dev_err(&port->dev,
996 "%s - cannot set modem control on port %d, %d\n",
997 __func__, port_number, status);
998
999 kfree(config);
1000}
1001
1002
1003static int ti_tiocmget(struct tty_struct *tty)
1004{
1005 struct usb_serial_port *port = tty->driver_data;
1006 struct ti_port *tport = usb_get_serial_port_data(port);
1007 unsigned int result;
1008 unsigned int msr;
1009 unsigned int mcr;
1010 unsigned long flags;
1011
1012 dbg("%s - port %d", __func__, port->number);
1013
1014 if (tport == NULL)
1015 return -ENODEV;
1016
1017 spin_lock_irqsave(&tport->tp_lock, flags);
1018 msr = tport->tp_msr;
1019 mcr = tport->tp_shadow_mcr;
1020 spin_unlock_irqrestore(&tport->tp_lock, flags);
1021
1022 result = ((mcr & TI_MCR_DTR) ? TIOCM_DTR : 0)
1023 | ((mcr & TI_MCR_RTS) ? TIOCM_RTS : 0)
1024 | ((mcr & TI_MCR_LOOP) ? TIOCM_LOOP : 0)
1025 | ((msr & TI_MSR_CTS) ? TIOCM_CTS : 0)
1026 | ((msr & TI_MSR_CD) ? TIOCM_CAR : 0)
1027 | ((msr & TI_MSR_RI) ? TIOCM_RI : 0)
1028 | ((msr & TI_MSR_DSR) ? TIOCM_DSR : 0);
1029
1030 dbg("%s - 0x%04X", __func__, result);
1031
1032 return result;
1033}
1034
1035
1036static int ti_tiocmset(struct tty_struct *tty,
1037 unsigned int set, unsigned int clear)
1038{
1039 struct usb_serial_port *port = tty->driver_data;
1040 struct ti_port *tport = usb_get_serial_port_data(port);
1041 unsigned int mcr;
1042 unsigned long flags;
1043
1044 dbg("%s - port %d", __func__, port->number);
1045
1046 if (tport == NULL)
1047 return -ENODEV;
1048
1049 spin_lock_irqsave(&tport->tp_lock, flags);
1050 mcr = tport->tp_shadow_mcr;
1051
1052 if (set & TIOCM_RTS)
1053 mcr |= TI_MCR_RTS;
1054 if (set & TIOCM_DTR)
1055 mcr |= TI_MCR_DTR;
1056 if (set & TIOCM_LOOP)
1057 mcr |= TI_MCR_LOOP;
1058
1059 if (clear & TIOCM_RTS)
1060 mcr &= ~TI_MCR_RTS;
1061 if (clear & TIOCM_DTR)
1062 mcr &= ~TI_MCR_DTR;
1063 if (clear & TIOCM_LOOP)
1064 mcr &= ~TI_MCR_LOOP;
1065 spin_unlock_irqrestore(&tport->tp_lock, flags);
1066
1067 return ti_set_mcr(tport, mcr);
1068}
1069
1070
1071static void ti_break(struct tty_struct *tty, int break_state)
1072{
1073 struct usb_serial_port *port = tty->driver_data;
1074 struct ti_port *tport = usb_get_serial_port_data(port);
1075 int status;
1076
1077 dbg("%s - state = %d", __func__, break_state);
1078
1079 if (tport == NULL)
1080 return;
1081
1082 ti_drain(tport, (tport->tp_closing_wait*HZ)/100, 0);
1083
1084 status = ti_write_byte(tport->tp_tdev,
1085 tport->tp_uart_base_addr + TI_UART_OFFSET_LCR,
1086 TI_LCR_BREAK, break_state == -1 ? TI_LCR_BREAK : 0);
1087
1088 if (status)
1089 dbg("%s - error setting break, %d", __func__, status);
1090}
1091
1092
1093static void ti_interrupt_callback(struct urb *urb)
1094{
1095 struct ti_device *tdev = urb->context;
1096 struct usb_serial_port *port;
1097 struct usb_serial *serial = tdev->td_serial;
1098 struct ti_port *tport;
1099 struct device *dev = &urb->dev->dev;
1100 unsigned char *data = urb->transfer_buffer;
1101 int length = urb->actual_length;
1102 int port_number;
1103 int function;
1104 int status = urb->status;
1105 int retval;
1106 __u8 msr;
1107
1108 dbg("%s", __func__);
1109
1110 switch (status) {
1111 case 0:
1112 break;
1113 case -ECONNRESET:
1114 case -ENOENT:
1115 case -ESHUTDOWN:
1116 dbg("%s - urb shutting down, %d", __func__, status);
1117 tdev->td_urb_error = 1;
1118 return;
1119 default:
1120 dev_err(dev, "%s - nonzero urb status, %d\n",
1121 __func__, status);
1122 tdev->td_urb_error = 1;
1123 goto exit;
1124 }
1125
1126 if (length != 2) {
1127 dbg("%s - bad packet size, %d", __func__, length);
1128 goto exit;
1129 }
1130
1131 if (data[0] == TI_CODE_HARDWARE_ERROR) {
1132 dev_err(dev, "%s - hardware error, %d\n", __func__, data[1]);
1133 goto exit;
1134 }
1135
1136 port_number = TI_GET_PORT_FROM_CODE(data[0]);
1137 function = TI_GET_FUNC_FROM_CODE(data[0]);
1138
1139 dbg("%s - port_number %d, function %d, data 0x%02X",
1140 __func__, port_number, function, data[1]);
1141
1142 if (port_number >= serial->num_ports) {
1143 dev_err(dev, "%s - bad port number, %d\n",
1144 __func__, port_number);
1145 goto exit;
1146 }
1147
1148 port = serial->port[port_number];
1149
1150 tport = usb_get_serial_port_data(port);
1151 if (!tport)
1152 goto exit;
1153
1154 switch (function) {
1155 case TI_CODE_DATA_ERROR:
1156 dev_err(dev, "%s - DATA ERROR, port %d, data 0x%02X\n",
1157 __func__, port_number, data[1]);
1158 break;
1159
1160 case TI_CODE_MODEM_STATUS:
1161 msr = data[1];
1162 dbg("%s - port %d, msr 0x%02X", __func__, port_number, msr);
1163 ti_handle_new_msr(tport, msr);
1164 break;
1165
1166 default:
1167 dev_err(dev, "%s - unknown interrupt code, 0x%02X\n",
1168 __func__, data[1]);
1169 break;
1170 }
1171
1172exit:
1173 retval = usb_submit_urb(urb, GFP_ATOMIC);
1174 if (retval)
1175 dev_err(dev, "%s - resubmit interrupt urb failed, %d\n",
1176 __func__, retval);
1177}
1178
1179
1180static void ti_bulk_in_callback(struct urb *urb)
1181{
1182 struct ti_port *tport = urb->context;
1183 struct usb_serial_port *port = tport->tp_port;
1184 struct device *dev = &urb->dev->dev;
1185 int status = urb->status;
1186 int retval = 0;
1187 struct tty_struct *tty;
1188
1189 dbg("%s", __func__);
1190
1191 switch (status) {
1192 case 0:
1193 break;
1194 case -ECONNRESET:
1195 case -ENOENT:
1196 case -ESHUTDOWN:
1197 dbg("%s - urb shutting down, %d", __func__, status);
1198 tport->tp_tdev->td_urb_error = 1;
1199 wake_up_interruptible(&tport->tp_write_wait);
1200 return;
1201 default:
1202 dev_err(dev, "%s - nonzero urb status, %d\n",
1203 __func__, status);
1204 tport->tp_tdev->td_urb_error = 1;
1205 wake_up_interruptible(&tport->tp_write_wait);
1206 }
1207
1208 if (status == -EPIPE)
1209 goto exit;
1210
1211 if (status) {
1212 dev_err(dev, "%s - stopping read!\n", __func__);
1213 return;
1214 }
1215
1216 tty = tty_port_tty_get(&port->port);
1217 if (tty) {
1218 if (urb->actual_length) {
1219 usb_serial_debug_data(debug, dev, __func__,
1220 urb->actual_length, urb->transfer_buffer);
1221
1222 if (!tport->tp_is_open)
1223 dbg("%s - port closed, dropping data",
1224 __func__);
1225 else
1226 ti_recv(&urb->dev->dev, tty,
1227 urb->transfer_buffer,
1228 urb->actual_length);
1229 spin_lock(&tport->tp_lock);
1230 tport->tp_icount.rx += urb->actual_length;
1231 spin_unlock(&tport->tp_lock);
1232 }
1233 tty_kref_put(tty);
1234 }
1235
1236exit:
1237 /* continue to read unless stopping */
1238 spin_lock(&tport->tp_lock);
1239 if (tport->tp_read_urb_state == TI_READ_URB_RUNNING) {
1240 urb->dev = port->serial->dev;
1241 retval = usb_submit_urb(urb, GFP_ATOMIC);
1242 } else if (tport->tp_read_urb_state == TI_READ_URB_STOPPING) {
1243 tport->tp_read_urb_state = TI_READ_URB_STOPPED;
1244 }
1245 spin_unlock(&tport->tp_lock);
1246 if (retval)
1247 dev_err(dev, "%s - resubmit read urb failed, %d\n",
1248 __func__, retval);
1249}
1250
1251
1252static void ti_bulk_out_callback(struct urb *urb)
1253{
1254 struct ti_port *tport = urb->context;
1255 struct usb_serial_port *port = tport->tp_port;
1256 struct device *dev = &urb->dev->dev;
1257 int status = urb->status;
1258
1259 dbg("%s - port %d", __func__, port->number);
1260
1261 tport->tp_write_urb_in_use = 0;
1262
1263 switch (status) {
1264 case 0:
1265 break;
1266 case -ECONNRESET:
1267 case -ENOENT:
1268 case -ESHUTDOWN:
1269 dbg("%s - urb shutting down, %d", __func__, status);
1270 tport->tp_tdev->td_urb_error = 1;
1271 wake_up_interruptible(&tport->tp_write_wait);
1272 return;
1273 default:
1274 dev_err(dev, "%s - nonzero urb status, %d\n",
1275 __func__, status);
1276 tport->tp_tdev->td_urb_error = 1;
1277 wake_up_interruptible(&tport->tp_write_wait);
1278 }
1279
1280 /* send any buffered data */
1281 ti_send(tport);
1282}
1283
1284
1285static void ti_recv(struct device *dev, struct tty_struct *tty,
1286 unsigned char *data, int length)
1287{
1288 int cnt;
1289
1290 do {
1291 cnt = tty_insert_flip_string(tty, data, length);
1292 if (cnt < length) {
1293 dev_err(dev, "%s - dropping data, %d bytes lost\n",
1294 __func__, length - cnt);
1295 if (cnt == 0)
1296 break;
1297 }
1298 tty_flip_buffer_push(tty);
1299 data += cnt;
1300 length -= cnt;
1301 } while (length > 0);
1302
1303}
1304
1305
1306static void ti_send(struct ti_port *tport)
1307{
1308 int count, result;
1309 struct usb_serial_port *port = tport->tp_port;
1310 struct tty_struct *tty = tty_port_tty_get(&port->port); /* FIXME */
1311 unsigned long flags;
1312
1313
1314 dbg("%s - port %d", __func__, port->number);
1315
1316 spin_lock_irqsave(&tport->tp_lock, flags);
1317
1318 if (tport->tp_write_urb_in_use)
1319 goto unlock;
1320
1321 count = kfifo_out(&tport->write_fifo,
1322 port->write_urb->transfer_buffer,
1323 port->bulk_out_size);
1324
1325 if (count == 0)
1326 goto unlock;
1327
1328 tport->tp_write_urb_in_use = 1;
1329
1330 spin_unlock_irqrestore(&tport->tp_lock, flags);
1331
1332 usb_serial_debug_data(debug, &port->dev, __func__, count,
1333 port->write_urb->transfer_buffer);
1334
1335 usb_fill_bulk_urb(port->write_urb, port->serial->dev,
1336 usb_sndbulkpipe(port->serial->dev,
1337 port->bulk_out_endpointAddress),
1338 port->write_urb->transfer_buffer, count,
1339 ti_bulk_out_callback, tport);
1340
1341 result = usb_submit_urb(port->write_urb, GFP_ATOMIC);
1342 if (result) {
1343 dev_err(&port->dev, "%s - submit write urb failed, %d\n",
1344 __func__, result);
1345 tport->tp_write_urb_in_use = 0;
1346 /* TODO: reschedule ti_send */
1347 } else {
1348 spin_lock_irqsave(&tport->tp_lock, flags);
1349 tport->tp_icount.tx += count;
1350 spin_unlock_irqrestore(&tport->tp_lock, flags);
1351 }
1352
1353 /* more room in the buffer for new writes, wakeup */
1354 if (tty)
1355 tty_wakeup(tty);
1356 tty_kref_put(tty);
1357 wake_up_interruptible(&tport->tp_write_wait);
1358 return;
1359unlock:
1360 spin_unlock_irqrestore(&tport->tp_lock, flags);
1361 tty_kref_put(tty);
1362 return;
1363}
1364
1365
1366static int ti_set_mcr(struct ti_port *tport, unsigned int mcr)
1367{
1368 unsigned long flags;
1369 int status;
1370
1371 status = ti_write_byte(tport->tp_tdev,
1372 tport->tp_uart_base_addr + TI_UART_OFFSET_MCR,
1373 TI_MCR_RTS | TI_MCR_DTR | TI_MCR_LOOP, mcr);
1374
1375 spin_lock_irqsave(&tport->tp_lock, flags);
1376 if (!status)
1377 tport->tp_shadow_mcr = mcr;
1378 spin_unlock_irqrestore(&tport->tp_lock, flags);
1379
1380 return status;
1381}
1382
1383
1384static int ti_get_lsr(struct ti_port *tport)
1385{
1386 int size, status;
1387 struct ti_device *tdev = tport->tp_tdev;
1388 struct usb_serial_port *port = tport->tp_port;
1389 int port_number = port->number - port->serial->minor;
1390 struct ti_port_status *data;
1391
1392 dbg("%s - port %d", __func__, port->number);
1393
1394 size = sizeof(struct ti_port_status);
1395 data = kmalloc(size, GFP_KERNEL);
1396 if (!data) {
1397 dev_err(&port->dev, "%s - out of memory\n", __func__);
1398 return -ENOMEM;
1399 }
1400
1401 status = ti_command_in_sync(tdev, TI_GET_PORT_STATUS,
1402 (__u8)(TI_UART1_PORT+port_number), 0, (__u8 *)data, size);
1403 if (status) {
1404 dev_err(&port->dev,
1405 "%s - get port status command failed, %d\n",
1406 __func__, status);
1407 goto free_data;
1408 }
1409
1410 dbg("%s - lsr 0x%02X", __func__, data->bLSR);
1411
1412 tport->tp_lsr = data->bLSR;
1413
1414free_data:
1415 kfree(data);
1416 return status;
1417}
1418
1419
1420static int ti_get_serial_info(struct ti_port *tport,
1421 struct serial_struct __user *ret_arg)
1422{
1423 struct usb_serial_port *port = tport->tp_port;
1424 struct serial_struct ret_serial;
1425
1426 if (!ret_arg)
1427 return -EFAULT;
1428
1429 memset(&ret_serial, 0, sizeof(ret_serial));
1430
1431 ret_serial.type = PORT_16550A;
1432 ret_serial.line = port->serial->minor;
1433 ret_serial.port = port->number - port->serial->minor;
1434 ret_serial.flags = tport->tp_flags;
1435 ret_serial.xmit_fifo_size = TI_WRITE_BUF_SIZE;
1436 ret_serial.baud_base = tport->tp_tdev->td_is_3410 ? 921600 : 460800;
1437 ret_serial.closing_wait = tport->tp_closing_wait;
1438
1439 if (copy_to_user(ret_arg, &ret_serial, sizeof(*ret_arg)))
1440 return -EFAULT;
1441
1442 return 0;
1443}
1444
1445
1446static int ti_set_serial_info(struct tty_struct *tty, struct ti_port *tport,
1447 struct serial_struct __user *new_arg)
1448{
1449 struct serial_struct new_serial;
1450
1451 if (copy_from_user(&new_serial, new_arg, sizeof(new_serial)))
1452 return -EFAULT;
1453
1454 tport->tp_flags = new_serial.flags & TI_SET_SERIAL_FLAGS;
1455 tport->tp_closing_wait = new_serial.closing_wait;
1456
1457 return 0;
1458}
1459
1460
1461static void ti_handle_new_msr(struct ti_port *tport, __u8 msr)
1462{
1463 struct async_icount *icount;
1464 struct tty_struct *tty;
1465 unsigned long flags;
1466
1467 dbg("%s - msr 0x%02X", __func__, msr);
1468
1469 if (msr & TI_MSR_DELTA_MASK) {
1470 spin_lock_irqsave(&tport->tp_lock, flags);
1471 icount = &tport->tp_icount;
1472 if (msr & TI_MSR_DELTA_CTS)
1473 icount->cts++;
1474 if (msr & TI_MSR_DELTA_DSR)
1475 icount->dsr++;
1476 if (msr & TI_MSR_DELTA_CD)
1477 icount->dcd++;
1478 if (msr & TI_MSR_DELTA_RI)
1479 icount->rng++;
1480 wake_up_interruptible(&tport->tp_msr_wait);
1481 spin_unlock_irqrestore(&tport->tp_lock, flags);
1482 }
1483
1484 tport->tp_msr = msr & TI_MSR_MASK;
1485
1486 /* handle CTS flow control */
1487 tty = tty_port_tty_get(&tport->tp_port->port);
1488 if (tty && C_CRTSCTS(tty)) {
1489 if (msr & TI_MSR_CTS) {
1490 tty->hw_stopped = 0;
1491 tty_wakeup(tty);
1492 } else {
1493 tty->hw_stopped = 1;
1494 }
1495 }
1496 tty_kref_put(tty);
1497}
1498
1499
1500static void ti_drain(struct ti_port *tport, unsigned long timeout, int flush)
1501{
1502 struct ti_device *tdev = tport->tp_tdev;
1503 struct usb_serial_port *port = tport->tp_port;
1504 wait_queue_t wait;
1505
1506 dbg("%s - port %d", __func__, port->number);
1507
1508 spin_lock_irq(&tport->tp_lock);
1509
1510 /* wait for data to drain from the buffer */
1511 tdev->td_urb_error = 0;
1512 init_waitqueue_entry(&wait, current);
1513 add_wait_queue(&tport->tp_write_wait, &wait);
1514 for (;;) {
1515 set_current_state(TASK_INTERRUPTIBLE);
1516 if (kfifo_len(&tport->write_fifo) == 0
1517 || timeout == 0 || signal_pending(current)
1518 || tdev->td_urb_error
1519 || port->serial->disconnected) /* disconnect */
1520 break;
1521 spin_unlock_irq(&tport->tp_lock);
1522 timeout = schedule_timeout(timeout);
1523 spin_lock_irq(&tport->tp_lock);
1524 }
1525 set_current_state(TASK_RUNNING);
1526 remove_wait_queue(&tport->tp_write_wait, &wait);
1527
1528 /* flush any remaining data in the buffer */
1529 if (flush)
1530 kfifo_reset_out(&tport->write_fifo);
1531
1532 spin_unlock_irq(&tport->tp_lock);
1533
1534 mutex_lock(&port->serial->disc_mutex);
1535 /* wait for data to drain from the device */
1536 /* wait for empty tx register, plus 20 ms */
1537 timeout += jiffies;
1538 tport->tp_lsr &= ~TI_LSR_TX_EMPTY;
1539 while ((long)(jiffies - timeout) < 0 && !signal_pending(current)
1540 && !(tport->tp_lsr&TI_LSR_TX_EMPTY) && !tdev->td_urb_error
1541 && !port->serial->disconnected) {
1542 if (ti_get_lsr(tport))
1543 break;
1544 mutex_unlock(&port->serial->disc_mutex);
1545 msleep_interruptible(20);
1546 mutex_lock(&port->serial->disc_mutex);
1547 }
1548 mutex_unlock(&port->serial->disc_mutex);
1549}
1550
1551
1552static void ti_stop_read(struct ti_port *tport, struct tty_struct *tty)
1553{
1554 unsigned long flags;
1555
1556 spin_lock_irqsave(&tport->tp_lock, flags);
1557
1558 if (tport->tp_read_urb_state == TI_READ_URB_RUNNING)
1559 tport->tp_read_urb_state = TI_READ_URB_STOPPING;
1560
1561 spin_unlock_irqrestore(&tport->tp_lock, flags);
1562}
1563
1564
1565static int ti_restart_read(struct ti_port *tport, struct tty_struct *tty)
1566{
1567 struct urb *urb;
1568 int status = 0;
1569 unsigned long flags;
1570
1571 spin_lock_irqsave(&tport->tp_lock, flags);
1572
1573 if (tport->tp_read_urb_state == TI_READ_URB_STOPPED) {
1574 tport->tp_read_urb_state = TI_READ_URB_RUNNING;
1575 urb = tport->tp_port->read_urb;
1576 spin_unlock_irqrestore(&tport->tp_lock, flags);
1577 urb->complete = ti_bulk_in_callback;
1578 urb->context = tport;
1579 urb->dev = tport->tp_port->serial->dev;
1580 status = usb_submit_urb(urb, GFP_KERNEL);
1581 } else {
1582 tport->tp_read_urb_state = TI_READ_URB_RUNNING;
1583 spin_unlock_irqrestore(&tport->tp_lock, flags);
1584 }
1585
1586 return status;
1587}
1588
1589
1590static int ti_command_out_sync(struct ti_device *tdev, __u8 command,
1591 __u16 moduleid, __u16 value, __u8 *data, int size)
1592{
1593 int status;
1594
1595 status = usb_control_msg(tdev->td_serial->dev,
1596 usb_sndctrlpipe(tdev->td_serial->dev, 0), command,
1597 (USB_TYPE_VENDOR | USB_RECIP_DEVICE | USB_DIR_OUT),
1598 value, moduleid, data, size, 1000);
1599
1600 if (status == size)
1601 status = 0;
1602
1603 if (status > 0)
1604 status = -ECOMM;
1605
1606 return status;
1607}
1608
1609
1610static int ti_command_in_sync(struct ti_device *tdev, __u8 command,
1611 __u16 moduleid, __u16 value, __u8 *data, int size)
1612{
1613 int status;
1614
1615 status = usb_control_msg(tdev->td_serial->dev,
1616 usb_rcvctrlpipe(tdev->td_serial->dev, 0), command,
1617 (USB_TYPE_VENDOR | USB_RECIP_DEVICE | USB_DIR_IN),
1618 value, moduleid, data, size, 1000);
1619
1620 if (status == size)
1621 status = 0;
1622
1623 if (status > 0)
1624 status = -ECOMM;
1625
1626 return status;
1627}
1628
1629
1630static int ti_write_byte(struct ti_device *tdev, unsigned long addr,
1631 __u8 mask, __u8 byte)
1632{
1633 int status;
1634 unsigned int size;
1635 struct ti_write_data_bytes *data;
1636 struct device *dev = &tdev->td_serial->dev->dev;
1637
1638 dbg("%s - addr 0x%08lX, mask 0x%02X, byte 0x%02X",
1639 __func__, addr, mask, byte);
1640
1641 size = sizeof(struct ti_write_data_bytes) + 2;
1642 data = kmalloc(size, GFP_KERNEL);
1643 if (!data) {
1644 dev_err(dev, "%s - out of memory\n", __func__);
1645 return -ENOMEM;
1646 }
1647
1648 data->bAddrType = TI_RW_DATA_ADDR_XDATA;
1649 data->bDataType = TI_RW_DATA_BYTE;
1650 data->bDataCounter = 1;
1651 data->wBaseAddrHi = cpu_to_be16(addr>>16);
1652 data->wBaseAddrLo = cpu_to_be16(addr);
1653 data->bData[0] = mask;
1654 data->bData[1] = byte;
1655
1656 status = ti_command_out_sync(tdev, TI_WRITE_DATA, TI_RAM_PORT, 0,
1657 (__u8 *)data, size);
1658
1659 if (status < 0)
1660 dev_err(dev, "%s - failed, %d\n", __func__, status);
1661
1662 kfree(data);
1663
1664 return status;
1665}
1666
1667static int ti_do_download(struct usb_device *dev, int pipe,
1668 u8 *buffer, int size)
1669{
1670 int pos;
1671 u8 cs = 0;
1672 int done;
1673 struct ti_firmware_header *header;
1674 int status = 0;
1675 int len;
1676
1677 for (pos = sizeof(struct ti_firmware_header); pos < size; pos++)
1678 cs = (__u8)(cs + buffer[pos]);
1679
1680 header = (struct ti_firmware_header *)buffer;
1681 header->wLength = cpu_to_le16((__u16)(size
1682 - sizeof(struct ti_firmware_header)));
1683 header->bCheckSum = cs;
1684
1685 dbg("%s - downloading firmware", __func__);
1686 for (pos = 0; pos < size; pos += done) {
1687 len = min(size - pos, TI_DOWNLOAD_MAX_PACKET_SIZE);
1688 status = usb_bulk_msg(dev, pipe, buffer + pos, len,
1689 &done, 1000);
1690 if (status)
1691 break;
1692 }
1693 return status;
1694}
1695
1696static int ti_download_firmware(struct ti_device *tdev)
1697{
1698 int status;
1699 int buffer_size;
1700 __u8 *buffer;
1701 struct usb_device *dev = tdev->td_serial->dev;
1702 unsigned int pipe = usb_sndbulkpipe(dev,
1703 tdev->td_serial->port[0]->bulk_out_endpointAddress);
1704 const struct firmware *fw_p;
1705 char buf[32];
1706
1707 dbg("%s\n", __func__);
1708 /* try ID specific firmware first, then try generic firmware */
1709 sprintf(buf, "ti_usb-v%04x-p%04x.fw", dev->descriptor.idVendor,
1710 dev->descriptor.idProduct);
1711 if ((status = request_firmware(&fw_p, buf, &dev->dev)) != 0) {
1712 buf[0] = '\0';
1713 if (dev->descriptor.idVendor == MTS_VENDOR_ID) {
1714 switch (dev->descriptor.idProduct) {
1715 case MTS_CDMA_PRODUCT_ID:
1716 strcpy(buf, "mts_cdma.fw");
1717 break;
1718 case MTS_GSM_PRODUCT_ID:
1719 strcpy(buf, "mts_gsm.fw");
1720 break;
1721 case MTS_EDGE_PRODUCT_ID:
1722 strcpy(buf, "mts_edge.fw");
1723 break;
1724 case MTS_MT9234MU_PRODUCT_ID:
1725 strcpy(buf, "mts_mt9234mu.fw");
1726 break;
1727 case MTS_MT9234ZBA_PRODUCT_ID:
1728 strcpy(buf, "mts_mt9234zba.fw");
1729 break;
1730 case MTS_MT9234ZBAOLD_PRODUCT_ID:
1731 strcpy(buf, "mts_mt9234zba.fw");
1732 break; }
1733 }
1734 if (buf[0] == '\0') {
1735 if (tdev->td_is_3410)
1736 strcpy(buf, "ti_3410.fw");
1737 else
1738 strcpy(buf, "ti_5052.fw");
1739 }
1740 status = request_firmware(&fw_p, buf, &dev->dev);
1741 }
1742 if (status) {
1743 dev_err(&dev->dev, "%s - firmware not found\n", __func__);
1744 return -ENOENT;
1745 }
1746 if (fw_p->size > TI_FIRMWARE_BUF_SIZE) {
1747 dev_err(&dev->dev, "%s - firmware too large %zu\n", __func__, fw_p->size);
1748 release_firmware(fw_p);
1749 return -ENOENT;
1750 }
1751
1752 buffer_size = TI_FIRMWARE_BUF_SIZE + sizeof(struct ti_firmware_header);
1753 buffer = kmalloc(buffer_size, GFP_KERNEL);
1754 if (buffer) {
1755 memcpy(buffer, fw_p->data, fw_p->size);
1756 memset(buffer + fw_p->size, 0xff, buffer_size - fw_p->size);
1757 status = ti_do_download(dev, pipe, buffer, fw_p->size);
1758 kfree(buffer);
1759 } else {
1760 dbg("%s ENOMEM\n", __func__);
1761 status = -ENOMEM;
1762 }
1763 release_firmware(fw_p);
1764 if (status) {
1765 dev_err(&dev->dev, "%s - error downloading firmware, %d\n",
1766 __func__, status);
1767 return status;
1768 }
1769
1770 dbg("%s - download successful", __func__);
1771
1772 return 0;
1773}