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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 .owner = THIS_MODULE,
421 .name = "ti_usb_3410_5052_1",
422 },
423 .description = "TI USB 3410 1 port adapter",
424 .id_table = ti_id_table_3410,
425 .num_ports = 1,
426 .num_bulk_out = 1,
427 .attach = ti_startup,
428 .release = ti_release,
429 .port_probe = ti_port_probe,
430 .port_remove = ti_port_remove,
431 .open = ti_open,
432 .close = ti_close,
433 .write = ti_write,
434 .write_room = ti_write_room,
435 .chars_in_buffer = ti_chars_in_buffer,
436 .tx_empty = ti_tx_empty,
437 .throttle = ti_throttle,
438 .unthrottle = ti_unthrottle,
439 .get_serial = ti_get_serial_info,
440 .set_termios = ti_set_termios,
441 .tiocmget = ti_tiocmget,
442 .tiocmset = ti_tiocmset,
443 .tiocmiwait = usb_serial_generic_tiocmiwait,
444 .get_icount = usb_serial_generic_get_icount,
445 .break_ctl = ti_break,
446 .read_int_callback = ti_interrupt_callback,
447 .read_bulk_callback = ti_bulk_in_callback,
448 .write_bulk_callback = ti_bulk_out_callback,
449};
450
451static struct usb_serial_driver ti_2port_device = {
452 .driver = {
453 .owner = THIS_MODULE,
454 .name = "ti_usb_3410_5052_2",
455 },
456 .description = "TI USB 5052 2 port adapter",
457 .id_table = ti_id_table_5052,
458 .num_ports = 2,
459 .num_bulk_out = 1,
460 .attach = ti_startup,
461 .release = ti_release,
462 .port_probe = ti_port_probe,
463 .port_remove = ti_port_remove,
464 .open = ti_open,
465 .close = ti_close,
466 .write = ti_write,
467 .write_room = ti_write_room,
468 .chars_in_buffer = ti_chars_in_buffer,
469 .tx_empty = ti_tx_empty,
470 .throttle = ti_throttle,
471 .unthrottle = ti_unthrottle,
472 .get_serial = ti_get_serial_info,
473 .set_termios = ti_set_termios,
474 .tiocmget = ti_tiocmget,
475 .tiocmset = ti_tiocmset,
476 .tiocmiwait = usb_serial_generic_tiocmiwait,
477 .get_icount = usb_serial_generic_get_icount,
478 .break_ctl = ti_break,
479 .read_int_callback = ti_interrupt_callback,
480 .read_bulk_callback = ti_bulk_in_callback,
481 .write_bulk_callback = ti_bulk_out_callback,
482};
483
484static struct usb_serial_driver * const serial_drivers[] = {
485 &ti_1port_device, &ti_2port_device, NULL
486};
487
488MODULE_AUTHOR(TI_DRIVER_AUTHOR);
489MODULE_DESCRIPTION(TI_DRIVER_DESC);
490MODULE_LICENSE("GPL");
491
492MODULE_FIRMWARE("ti_3410.fw");
493MODULE_FIRMWARE("ti_5052.fw");
494MODULE_FIRMWARE("mts_cdma.fw");
495MODULE_FIRMWARE("mts_gsm.fw");
496MODULE_FIRMWARE("mts_edge.fw");
497MODULE_FIRMWARE("mts_mt9234mu.fw");
498MODULE_FIRMWARE("mts_mt9234zba.fw");
499MODULE_FIRMWARE("moxa/moxa-1110.fw");
500MODULE_FIRMWARE("moxa/moxa-1130.fw");
501MODULE_FIRMWARE("moxa/moxa-1131.fw");
502MODULE_FIRMWARE("moxa/moxa-1150.fw");
503MODULE_FIRMWARE("moxa/moxa-1151.fw");
504
505MODULE_DEVICE_TABLE(usb, ti_id_table_combined);
506
507module_usb_serial_driver(serial_drivers, ti_id_table_combined);
508
509static int ti_startup(struct usb_serial *serial)
510{
511 struct ti_device *tdev;
512 struct usb_device *dev = serial->dev;
513 struct usb_host_interface *cur_altsetting;
514 int num_endpoints;
515 u16 vid, pid;
516 int status;
517
518 dev_dbg(&dev->dev,
519 "%s - product 0x%4X, num configurations %d, configuration value %d\n",
520 __func__, le16_to_cpu(dev->descriptor.idProduct),
521 dev->descriptor.bNumConfigurations,
522 dev->actconfig->desc.bConfigurationValue);
523
524 tdev = kzalloc(sizeof(struct ti_device), GFP_KERNEL);
525 if (!tdev)
526 return -ENOMEM;
527
528 mutex_init(&tdev->td_open_close_lock);
529 tdev->td_serial = serial;
530 usb_set_serial_data(serial, tdev);
531
532 /* determine device type */
533 if (serial->type == &ti_1port_device)
534 tdev->td_is_3410 = 1;
535 dev_dbg(&dev->dev, "%s - device type is %s\n", __func__,
536 tdev->td_is_3410 ? "3410" : "5052");
537
538 vid = le16_to_cpu(dev->descriptor.idVendor);
539 pid = le16_to_cpu(dev->descriptor.idProduct);
540 if (vid == MXU1_VENDOR_ID) {
541 switch (pid) {
542 case MXU1_1130_PRODUCT_ID:
543 case MXU1_1131_PRODUCT_ID:
544 tdev->td_rs485_only = true;
545 break;
546 }
547 }
548
549 cur_altsetting = serial->interface->cur_altsetting;
550 num_endpoints = cur_altsetting->desc.bNumEndpoints;
551
552 /* if we have only 1 configuration and 1 endpoint, download firmware */
553 if (dev->descriptor.bNumConfigurations == 1 && num_endpoints == 1) {
554 status = ti_download_firmware(tdev);
555
556 if (status != 0)
557 goto free_tdev;
558
559 /* 3410 must be reset, 5052 resets itself */
560 if (tdev->td_is_3410) {
561 msleep_interruptible(100);
562 usb_reset_device(dev);
563 }
564
565 status = -ENODEV;
566 goto free_tdev;
567 }
568
569 /* the second configuration must be set */
570 if (dev->actconfig->desc.bConfigurationValue == TI_BOOT_CONFIG) {
571 status = usb_driver_set_configuration(dev, TI_ACTIVE_CONFIG);
572 status = status ? status : -ENODEV;
573 goto free_tdev;
574 }
575
576 if (serial->num_bulk_in < serial->num_ports ||
577 serial->num_bulk_out < serial->num_ports) {
578 dev_err(&serial->interface->dev, "missing endpoints\n");
579 status = -ENODEV;
580 goto free_tdev;
581 }
582
583 return 0;
584
585free_tdev:
586 kfree(tdev);
587 usb_set_serial_data(serial, NULL);
588 return status;
589}
590
591
592static void ti_release(struct usb_serial *serial)
593{
594 struct ti_device *tdev = usb_get_serial_data(serial);
595
596 kfree(tdev);
597}
598
599static int ti_port_probe(struct usb_serial_port *port)
600{
601 struct ti_port *tport;
602
603 tport = kzalloc(sizeof(*tport), GFP_KERNEL);
604 if (!tport)
605 return -ENOMEM;
606
607 spin_lock_init(&tport->tp_lock);
608 if (port == port->serial->port[0])
609 tport->tp_uart_base_addr = TI_UART1_BASE_ADDR;
610 else
611 tport->tp_uart_base_addr = TI_UART2_BASE_ADDR;
612 tport->tp_port = port;
613 tport->tp_tdev = usb_get_serial_data(port->serial);
614
615 if (tport->tp_tdev->td_rs485_only)
616 tport->tp_uart_mode = TI_UART_485_RECEIVER_DISABLED;
617 else
618 tport->tp_uart_mode = TI_UART_232;
619
620 usb_set_serial_port_data(port, tport);
621
622 /*
623 * The TUSB5052 LSR does not tell when the transmitter shift register
624 * has emptied so add a one-character drain delay.
625 */
626 if (!tport->tp_tdev->td_is_3410)
627 port->port.drain_delay = 1;
628
629 return 0;
630}
631
632static void ti_port_remove(struct usb_serial_port *port)
633{
634 struct ti_port *tport;
635
636 tport = usb_get_serial_port_data(port);
637 kfree(tport);
638}
639
640static int ti_open(struct tty_struct *tty, struct usb_serial_port *port)
641{
642 struct ti_port *tport = usb_get_serial_port_data(port);
643 struct ti_device *tdev;
644 struct usb_device *dev;
645 struct urb *urb;
646 int status;
647 u16 open_settings;
648
649 open_settings = (TI_PIPE_MODE_CONTINUOUS |
650 TI_PIPE_TIMEOUT_ENABLE |
651 (TI_TRANSFER_TIMEOUT << 2));
652
653 dev = port->serial->dev;
654 tdev = tport->tp_tdev;
655
656 /* only one open on any port on a device at a time */
657 if (mutex_lock_interruptible(&tdev->td_open_close_lock))
658 return -ERESTARTSYS;
659
660 tport->tp_msr = 0;
661 tport->tp_shadow_mcr |= (TI_MCR_RTS | TI_MCR_DTR);
662
663 /* start interrupt urb the first time a port is opened on this device */
664 if (tdev->td_open_port_count == 0) {
665 dev_dbg(&port->dev, "%s - start interrupt in urb\n", __func__);
666 urb = tdev->td_serial->port[0]->interrupt_in_urb;
667 if (!urb) {
668 dev_err(&port->dev, "%s - no interrupt urb\n", __func__);
669 status = -EINVAL;
670 goto release_lock;
671 }
672 urb->context = tdev;
673 status = usb_submit_urb(urb, GFP_KERNEL);
674 if (status) {
675 dev_err(&port->dev, "%s - submit interrupt urb failed, %d\n", __func__, status);
676 goto release_lock;
677 }
678 }
679
680 if (tty)
681 ti_set_termios(tty, port, &tty->termios);
682
683 status = ti_port_cmd_out(port, TI_OPEN_PORT, open_settings, NULL, 0);
684 if (status) {
685 dev_err(&port->dev, "%s - cannot send open command, %d\n",
686 __func__, status);
687 goto unlink_int_urb;
688 }
689
690 status = ti_port_cmd_out(port, TI_START_PORT, 0, NULL, 0);
691 if (status) {
692 dev_err(&port->dev, "%s - cannot send start command, %d\n",
693 __func__, status);
694 goto unlink_int_urb;
695 }
696
697 status = ti_port_cmd_out(port, TI_PURGE_PORT, TI_PURGE_INPUT, NULL, 0);
698 if (status) {
699 dev_err(&port->dev, "%s - cannot clear input buffers, %d\n",
700 __func__, status);
701 goto unlink_int_urb;
702 }
703 status = ti_port_cmd_out(port, TI_PURGE_PORT, TI_PURGE_OUTPUT, NULL, 0);
704 if (status) {
705 dev_err(&port->dev, "%s - cannot clear output buffers, %d\n",
706 __func__, status);
707 goto unlink_int_urb;
708 }
709
710 /* reset the data toggle on the bulk endpoints to work around bug in
711 * host controllers where things get out of sync some times */
712 usb_clear_halt(dev, port->write_urb->pipe);
713 usb_clear_halt(dev, port->read_urb->pipe);
714
715 if (tty)
716 ti_set_termios(tty, port, &tty->termios);
717
718 status = ti_port_cmd_out(port, TI_OPEN_PORT, open_settings, NULL, 0);
719 if (status) {
720 dev_err(&port->dev, "%s - cannot send open command (2), %d\n",
721 __func__, status);
722 goto unlink_int_urb;
723 }
724
725 status = ti_port_cmd_out(port, TI_START_PORT, 0, NULL, 0);
726 if (status) {
727 dev_err(&port->dev, "%s - cannot send start command (2), %d\n",
728 __func__, status);
729 goto unlink_int_urb;
730 }
731
732 /* start read urb */
733 urb = port->read_urb;
734 if (!urb) {
735 dev_err(&port->dev, "%s - no read urb\n", __func__);
736 status = -EINVAL;
737 goto unlink_int_urb;
738 }
739 tport->tp_read_urb_state = TI_READ_URB_RUNNING;
740 urb->context = tport;
741 status = usb_submit_urb(urb, GFP_KERNEL);
742 if (status) {
743 dev_err(&port->dev, "%s - submit read urb failed, %d\n",
744 __func__, status);
745 goto unlink_int_urb;
746 }
747
748 tport->tp_is_open = 1;
749 ++tdev->td_open_port_count;
750
751 goto release_lock;
752
753unlink_int_urb:
754 if (tdev->td_open_port_count == 0)
755 usb_kill_urb(port->serial->port[0]->interrupt_in_urb);
756release_lock:
757 mutex_unlock(&tdev->td_open_close_lock);
758 return status;
759}
760
761
762static void ti_close(struct usb_serial_port *port)
763{
764 struct ti_device *tdev;
765 struct ti_port *tport;
766 int status;
767 unsigned long flags;
768
769 tdev = usb_get_serial_data(port->serial);
770 tport = usb_get_serial_port_data(port);
771
772 tport->tp_is_open = 0;
773
774 usb_kill_urb(port->read_urb);
775 usb_kill_urb(port->write_urb);
776 tport->tp_write_urb_in_use = 0;
777 spin_lock_irqsave(&tport->tp_lock, flags);
778 kfifo_reset_out(&port->write_fifo);
779 spin_unlock_irqrestore(&tport->tp_lock, flags);
780
781 status = ti_port_cmd_out(port, TI_CLOSE_PORT, 0, NULL, 0);
782 if (status)
783 dev_err(&port->dev,
784 "%s - cannot send close port command, %d\n"
785 , __func__, status);
786
787 mutex_lock(&tdev->td_open_close_lock);
788 --tdev->td_open_port_count;
789 if (tdev->td_open_port_count == 0) {
790 /* last port is closed, shut down interrupt urb */
791 usb_kill_urb(port->serial->port[0]->interrupt_in_urb);
792 }
793 mutex_unlock(&tdev->td_open_close_lock);
794}
795
796
797static int ti_write(struct tty_struct *tty, struct usb_serial_port *port,
798 const unsigned char *data, int count)
799{
800 struct ti_port *tport = usb_get_serial_port_data(port);
801
802 if (count == 0) {
803 return 0;
804 }
805
806 if (!tport->tp_is_open)
807 return -ENODEV;
808
809 count = kfifo_in_locked(&port->write_fifo, data, count,
810 &tport->tp_lock);
811 ti_send(tport);
812
813 return count;
814}
815
816
817static unsigned int ti_write_room(struct tty_struct *tty)
818{
819 struct usb_serial_port *port = tty->driver_data;
820 struct ti_port *tport = usb_get_serial_port_data(port);
821 unsigned int room;
822 unsigned long flags;
823
824 spin_lock_irqsave(&tport->tp_lock, flags);
825 room = kfifo_avail(&port->write_fifo);
826 spin_unlock_irqrestore(&tport->tp_lock, flags);
827
828 dev_dbg(&port->dev, "%s - returns %u\n", __func__, room);
829 return room;
830}
831
832
833static unsigned int ti_chars_in_buffer(struct tty_struct *tty)
834{
835 struct usb_serial_port *port = tty->driver_data;
836 struct ti_port *tport = usb_get_serial_port_data(port);
837 unsigned int chars;
838 unsigned long flags;
839
840 spin_lock_irqsave(&tport->tp_lock, flags);
841 chars = kfifo_len(&port->write_fifo);
842 spin_unlock_irqrestore(&tport->tp_lock, flags);
843
844 dev_dbg(&port->dev, "%s - returns %u\n", __func__, chars);
845 return chars;
846}
847
848static bool ti_tx_empty(struct usb_serial_port *port)
849{
850 struct ti_port *tport = usb_get_serial_port_data(port);
851 u8 lsr, mask;
852 int ret;
853
854 /*
855 * TUSB5052 does not have the TEMT bit to tell if the shift register
856 * is empty.
857 */
858 if (tport->tp_tdev->td_is_3410)
859 mask = TI_LSR_TX_EMPTY_BOTH;
860 else
861 mask = TI_LSR_TX_EMPTY;
862
863 ret = ti_get_lsr(tport, &lsr);
864 if (!ret && !(lsr & mask))
865 return false;
866
867 return true;
868}
869
870static void ti_throttle(struct tty_struct *tty)
871{
872 struct usb_serial_port *port = tty->driver_data;
873 struct ti_port *tport = usb_get_serial_port_data(port);
874
875 if (I_IXOFF(tty) || C_CRTSCTS(tty))
876 ti_stop_read(tport, tty);
877
878}
879
880
881static void ti_unthrottle(struct tty_struct *tty)
882{
883 struct usb_serial_port *port = tty->driver_data;
884 struct ti_port *tport = usb_get_serial_port_data(port);
885 int status;
886
887 if (I_IXOFF(tty) || C_CRTSCTS(tty)) {
888 status = ti_restart_read(tport, tty);
889 if (status)
890 dev_err(&port->dev, "%s - cannot restart read, %d\n",
891 __func__, status);
892 }
893}
894
895static void ti_set_termios(struct tty_struct *tty,
896 struct usb_serial_port *port,
897 const struct ktermios *old_termios)
898{
899 struct ti_port *tport = usb_get_serial_port_data(port);
900 struct ti_uart_config *config;
901 int baud;
902 int status;
903 unsigned int mcr;
904 u16 wbaudrate;
905 u16 wflags = 0;
906
907 config = kmalloc(sizeof(*config), GFP_KERNEL);
908 if (!config)
909 return;
910
911 /* these flags must be set */
912 wflags |= TI_UART_ENABLE_MS_INTS;
913 wflags |= TI_UART_ENABLE_AUTO_START_DMA;
914 config->bUartMode = tport->tp_uart_mode;
915
916 switch (C_CSIZE(tty)) {
917 case CS5:
918 config->bDataBits = TI_UART_5_DATA_BITS;
919 break;
920 case CS6:
921 config->bDataBits = TI_UART_6_DATA_BITS;
922 break;
923 case CS7:
924 config->bDataBits = TI_UART_7_DATA_BITS;
925 break;
926 default:
927 case CS8:
928 config->bDataBits = TI_UART_8_DATA_BITS;
929 break;
930 }
931
932 /* CMSPAR isn't supported by this driver */
933 tty->termios.c_cflag &= ~CMSPAR;
934
935 if (C_PARENB(tty)) {
936 if (C_PARODD(tty)) {
937 wflags |= TI_UART_ENABLE_PARITY_CHECKING;
938 config->bParity = TI_UART_ODD_PARITY;
939 } else {
940 wflags |= TI_UART_ENABLE_PARITY_CHECKING;
941 config->bParity = TI_UART_EVEN_PARITY;
942 }
943 } else {
944 wflags &= ~TI_UART_ENABLE_PARITY_CHECKING;
945 config->bParity = TI_UART_NO_PARITY;
946 }
947
948 if (C_CSTOPB(tty))
949 config->bStopBits = TI_UART_2_STOP_BITS;
950 else
951 config->bStopBits = TI_UART_1_STOP_BITS;
952
953 if (C_CRTSCTS(tty)) {
954 /* RTS flow control must be off to drop RTS for baud rate B0 */
955 if ((C_BAUD(tty)) != B0)
956 wflags |= TI_UART_ENABLE_RTS_IN;
957 wflags |= TI_UART_ENABLE_CTS_OUT;
958 } else {
959 ti_restart_read(tport, tty);
960 }
961
962 if (I_IXOFF(tty) || I_IXON(tty)) {
963 config->cXon = START_CHAR(tty);
964 config->cXoff = STOP_CHAR(tty);
965
966 if (I_IXOFF(tty))
967 wflags |= TI_UART_ENABLE_X_IN;
968 else
969 ti_restart_read(tport, tty);
970
971 if (I_IXON(tty))
972 wflags |= TI_UART_ENABLE_X_OUT;
973 }
974
975 baud = tty_get_baud_rate(tty);
976 if (!baud)
977 baud = 9600;
978 if (tport->tp_tdev->td_is_3410)
979 wbaudrate = (923077 + baud/2) / baud;
980 else
981 wbaudrate = (461538 + baud/2) / baud;
982
983 /* FIXME: Should calculate resulting baud here and report it back */
984 if ((C_BAUD(tty)) != B0)
985 tty_encode_baud_rate(tty, baud, baud);
986
987 dev_dbg(&port->dev,
988 "%s - BaudRate=%d, wBaudRate=%d, wFlags=0x%04X, bDataBits=%d, bParity=%d, bStopBits=%d, cXon=%d, cXoff=%d, bUartMode=%d\n",
989 __func__, baud, wbaudrate, wflags,
990 config->bDataBits, config->bParity, config->bStopBits,
991 config->cXon, config->cXoff, config->bUartMode);
992
993 config->wBaudRate = cpu_to_be16(wbaudrate);
994 config->wFlags = cpu_to_be16(wflags);
995
996 status = ti_port_cmd_out(port, TI_SET_CONFIG, 0, config,
997 sizeof(*config));
998 if (status)
999 dev_err(&port->dev, "%s - cannot set config on port %d, %d\n",
1000 __func__, port->port_number, status);
1001
1002 /* SET_CONFIG asserts RTS and DTR, reset them correctly */
1003 mcr = tport->tp_shadow_mcr;
1004 /* if baud rate is B0, clear RTS and DTR */
1005 if (C_BAUD(tty) == B0)
1006 mcr &= ~(TI_MCR_DTR | TI_MCR_RTS);
1007 status = ti_set_mcr(tport, mcr);
1008 if (status)
1009 dev_err(&port->dev, "%s - cannot set modem control on port %d, %d\n",
1010 __func__, port->port_number, status);
1011
1012 kfree(config);
1013}
1014
1015
1016static int ti_tiocmget(struct tty_struct *tty)
1017{
1018 struct usb_serial_port *port = tty->driver_data;
1019 struct ti_port *tport = usb_get_serial_port_data(port);
1020 unsigned int result;
1021 unsigned int msr;
1022 unsigned int mcr;
1023 unsigned long flags;
1024
1025 spin_lock_irqsave(&tport->tp_lock, flags);
1026 msr = tport->tp_msr;
1027 mcr = tport->tp_shadow_mcr;
1028 spin_unlock_irqrestore(&tport->tp_lock, flags);
1029
1030 result = ((mcr & TI_MCR_DTR) ? TIOCM_DTR : 0)
1031 | ((mcr & TI_MCR_RTS) ? TIOCM_RTS : 0)
1032 | ((mcr & TI_MCR_LOOP) ? TIOCM_LOOP : 0)
1033 | ((msr & TI_MSR_CTS) ? TIOCM_CTS : 0)
1034 | ((msr & TI_MSR_CD) ? TIOCM_CAR : 0)
1035 | ((msr & TI_MSR_RI) ? TIOCM_RI : 0)
1036 | ((msr & TI_MSR_DSR) ? TIOCM_DSR : 0);
1037
1038 dev_dbg(&port->dev, "%s - 0x%04X\n", __func__, result);
1039
1040 return result;
1041}
1042
1043
1044static int ti_tiocmset(struct tty_struct *tty,
1045 unsigned int set, unsigned int clear)
1046{
1047 struct usb_serial_port *port = tty->driver_data;
1048 struct ti_port *tport = usb_get_serial_port_data(port);
1049 unsigned int mcr;
1050 unsigned long flags;
1051
1052 spin_lock_irqsave(&tport->tp_lock, flags);
1053 mcr = tport->tp_shadow_mcr;
1054
1055 if (set & TIOCM_RTS)
1056 mcr |= TI_MCR_RTS;
1057 if (set & TIOCM_DTR)
1058 mcr |= TI_MCR_DTR;
1059 if (set & TIOCM_LOOP)
1060 mcr |= TI_MCR_LOOP;
1061
1062 if (clear & TIOCM_RTS)
1063 mcr &= ~TI_MCR_RTS;
1064 if (clear & TIOCM_DTR)
1065 mcr &= ~TI_MCR_DTR;
1066 if (clear & TIOCM_LOOP)
1067 mcr &= ~TI_MCR_LOOP;
1068 spin_unlock_irqrestore(&tport->tp_lock, flags);
1069
1070 return ti_set_mcr(tport, mcr);
1071}
1072
1073
1074static int ti_break(struct tty_struct *tty, int break_state)
1075{
1076 struct usb_serial_port *port = tty->driver_data;
1077 struct ti_port *tport = usb_get_serial_port_data(port);
1078 int status;
1079
1080 dev_dbg(&port->dev, "%s - state = %d\n", __func__, break_state);
1081
1082 status = ti_write_byte(port, tport->tp_tdev,
1083 tport->tp_uart_base_addr + TI_UART_OFFSET_LCR,
1084 TI_LCR_BREAK, break_state == -1 ? TI_LCR_BREAK : 0);
1085
1086 if (status) {
1087 dev_dbg(&port->dev, "%s - error setting break, %d\n", __func__, status);
1088 return status;
1089 }
1090
1091 return 0;
1092}
1093
1094static int ti_get_port_from_code(unsigned char code)
1095{
1096 return (code >> 6) & 0x01;
1097}
1098
1099static int ti_get_func_from_code(unsigned char code)
1100{
1101 return code & 0x0f;
1102}
1103
1104static void ti_interrupt_callback(struct urb *urb)
1105{
1106 struct ti_device *tdev = urb->context;
1107 struct usb_serial_port *port;
1108 struct usb_serial *serial = tdev->td_serial;
1109 struct ti_port *tport;
1110 struct device *dev = &urb->dev->dev;
1111 unsigned char *data = urb->transfer_buffer;
1112 int length = urb->actual_length;
1113 int port_number;
1114 int function;
1115 int status = urb->status;
1116 int retval;
1117 u8 msr;
1118
1119 switch (status) {
1120 case 0:
1121 break;
1122 case -ECONNRESET:
1123 case -ENOENT:
1124 case -ESHUTDOWN:
1125 dev_dbg(dev, "%s - urb shutting down, %d\n", __func__, status);
1126 return;
1127 default:
1128 dev_err(dev, "%s - nonzero urb status, %d\n", __func__, status);
1129 goto exit;
1130 }
1131
1132 if (length != 2) {
1133 dev_dbg(dev, "%s - bad packet size, %d\n", __func__, length);
1134 goto exit;
1135 }
1136
1137 if (data[0] == TI_CODE_HARDWARE_ERROR) {
1138 dev_err(dev, "%s - hardware error, %d\n", __func__, data[1]);
1139 goto exit;
1140 }
1141
1142 port_number = ti_get_port_from_code(data[0]);
1143 function = ti_get_func_from_code(data[0]);
1144
1145 dev_dbg(dev, "%s - port_number %d, function %d, data 0x%02X\n",
1146 __func__, port_number, function, data[1]);
1147
1148 if (port_number >= serial->num_ports) {
1149 dev_err(dev, "%s - bad port number, %d\n",
1150 __func__, port_number);
1151 goto exit;
1152 }
1153
1154 port = serial->port[port_number];
1155
1156 tport = usb_get_serial_port_data(port);
1157 if (!tport)
1158 goto exit;
1159
1160 switch (function) {
1161 case TI_CODE_DATA_ERROR:
1162 dev_err(dev, "%s - DATA ERROR, port %d, data 0x%02X\n",
1163 __func__, port_number, data[1]);
1164 break;
1165
1166 case TI_CODE_MODEM_STATUS:
1167 msr = data[1];
1168 dev_dbg(dev, "%s - port %d, msr 0x%02X\n", __func__, port_number, msr);
1169 ti_handle_new_msr(tport, msr);
1170 break;
1171
1172 default:
1173 dev_err(dev, "%s - unknown interrupt code, 0x%02X\n",
1174 __func__, data[1]);
1175 break;
1176 }
1177
1178exit:
1179 retval = usb_submit_urb(urb, GFP_ATOMIC);
1180 if (retval)
1181 dev_err(dev, "%s - resubmit interrupt urb failed, %d\n",
1182 __func__, retval);
1183}
1184
1185
1186static void ti_bulk_in_callback(struct urb *urb)
1187{
1188 struct ti_port *tport = urb->context;
1189 struct usb_serial_port *port = tport->tp_port;
1190 struct device *dev = &urb->dev->dev;
1191 int status = urb->status;
1192 unsigned long flags;
1193 int retval = 0;
1194
1195 switch (status) {
1196 case 0:
1197 break;
1198 case -ECONNRESET:
1199 case -ENOENT:
1200 case -ESHUTDOWN:
1201 dev_dbg(dev, "%s - urb shutting down, %d\n", __func__, status);
1202 return;
1203 default:
1204 dev_err(dev, "%s - nonzero urb status, %d\n",
1205 __func__, status);
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 if (urb->actual_length) {
1217 usb_serial_debug_data(dev, __func__, urb->actual_length,
1218 urb->transfer_buffer);
1219
1220 if (!tport->tp_is_open)
1221 dev_dbg(dev, "%s - port closed, dropping data\n",
1222 __func__);
1223 else
1224 ti_recv(port, urb->transfer_buffer, urb->actual_length);
1225 spin_lock_irqsave(&tport->tp_lock, flags);
1226 port->icount.rx += urb->actual_length;
1227 spin_unlock_irqrestore(&tport->tp_lock, flags);
1228 }
1229
1230exit:
1231 /* continue to read unless stopping */
1232 spin_lock_irqsave(&tport->tp_lock, flags);
1233 if (tport->tp_read_urb_state == TI_READ_URB_RUNNING)
1234 retval = usb_submit_urb(urb, GFP_ATOMIC);
1235 else if (tport->tp_read_urb_state == TI_READ_URB_STOPPING)
1236 tport->tp_read_urb_state = TI_READ_URB_STOPPED;
1237
1238 spin_unlock_irqrestore(&tport->tp_lock, flags);
1239 if (retval)
1240 dev_err(dev, "%s - resubmit read urb failed, %d\n",
1241 __func__, retval);
1242}
1243
1244
1245static void ti_bulk_out_callback(struct urb *urb)
1246{
1247 struct ti_port *tport = urb->context;
1248 struct usb_serial_port *port = tport->tp_port;
1249 int status = urb->status;
1250
1251 tport->tp_write_urb_in_use = 0;
1252
1253 switch (status) {
1254 case 0:
1255 break;
1256 case -ECONNRESET:
1257 case -ENOENT:
1258 case -ESHUTDOWN:
1259 dev_dbg(&port->dev, "%s - urb shutting down, %d\n", __func__, status);
1260 return;
1261 default:
1262 dev_err_console(port, "%s - nonzero urb status, %d\n",
1263 __func__, status);
1264 }
1265
1266 /* send any buffered data */
1267 ti_send(tport);
1268}
1269
1270
1271static void ti_recv(struct usb_serial_port *port, unsigned char *data,
1272 int length)
1273{
1274 int cnt;
1275
1276 do {
1277 cnt = tty_insert_flip_string(&port->port, data, length);
1278 if (cnt < length) {
1279 dev_err(&port->dev, "%s - dropping data, %d bytes lost\n",
1280 __func__, length - cnt);
1281 if (cnt == 0)
1282 break;
1283 }
1284 tty_flip_buffer_push(&port->port);
1285 data += cnt;
1286 length -= cnt;
1287 } while (length > 0);
1288}
1289
1290
1291static void ti_send(struct ti_port *tport)
1292{
1293 int count, result;
1294 struct usb_serial_port *port = tport->tp_port;
1295 unsigned long flags;
1296
1297 spin_lock_irqsave(&tport->tp_lock, flags);
1298
1299 if (tport->tp_write_urb_in_use)
1300 goto unlock;
1301
1302 count = kfifo_out(&port->write_fifo,
1303 port->write_urb->transfer_buffer,
1304 port->bulk_out_size);
1305
1306 if (count == 0)
1307 goto unlock;
1308
1309 tport->tp_write_urb_in_use = 1;
1310
1311 spin_unlock_irqrestore(&tport->tp_lock, flags);
1312
1313 usb_serial_debug_data(&port->dev, __func__, count,
1314 port->write_urb->transfer_buffer);
1315
1316 usb_fill_bulk_urb(port->write_urb, port->serial->dev,
1317 usb_sndbulkpipe(port->serial->dev,
1318 port->bulk_out_endpointAddress),
1319 port->write_urb->transfer_buffer, count,
1320 ti_bulk_out_callback, tport);
1321
1322 result = usb_submit_urb(port->write_urb, GFP_ATOMIC);
1323 if (result) {
1324 dev_err_console(port, "%s - submit write urb failed, %d\n",
1325 __func__, result);
1326 tport->tp_write_urb_in_use = 0;
1327 /* TODO: reschedule ti_send */
1328 } else {
1329 spin_lock_irqsave(&tport->tp_lock, flags);
1330 port->icount.tx += count;
1331 spin_unlock_irqrestore(&tport->tp_lock, flags);
1332 }
1333
1334 /* more room in the buffer for new writes, wakeup */
1335 tty_port_tty_wakeup(&port->port);
1336
1337 return;
1338unlock:
1339 spin_unlock_irqrestore(&tport->tp_lock, flags);
1340 return;
1341}
1342
1343
1344static int ti_set_mcr(struct ti_port *tport, unsigned int mcr)
1345{
1346 unsigned long flags;
1347 int status;
1348
1349 status = ti_write_byte(tport->tp_port, tport->tp_tdev,
1350 tport->tp_uart_base_addr + TI_UART_OFFSET_MCR,
1351 TI_MCR_RTS | TI_MCR_DTR | TI_MCR_LOOP, mcr);
1352
1353 spin_lock_irqsave(&tport->tp_lock, flags);
1354 if (!status)
1355 tport->tp_shadow_mcr = mcr;
1356 spin_unlock_irqrestore(&tport->tp_lock, flags);
1357
1358 return status;
1359}
1360
1361
1362static int ti_get_lsr(struct ti_port *tport, u8 *lsr)
1363{
1364 int size, status;
1365 struct usb_serial_port *port = tport->tp_port;
1366 struct ti_port_status *data;
1367
1368 size = sizeof(struct ti_port_status);
1369 data = kmalloc(size, GFP_KERNEL);
1370 if (!data)
1371 return -ENOMEM;
1372
1373 status = ti_port_cmd_in(port, TI_GET_PORT_STATUS, 0, data, size);
1374 if (status) {
1375 dev_err(&port->dev,
1376 "%s - get port status command failed, %d\n",
1377 __func__, status);
1378 goto free_data;
1379 }
1380
1381 dev_dbg(&port->dev, "%s - lsr 0x%02X\n", __func__, data->bLSR);
1382
1383 *lsr = data->bLSR;
1384
1385free_data:
1386 kfree(data);
1387 return status;
1388}
1389
1390
1391static void ti_get_serial_info(struct tty_struct *tty, struct serial_struct *ss)
1392{
1393 struct usb_serial_port *port = tty->driver_data;
1394 struct ti_port *tport = usb_get_serial_port_data(port);
1395
1396 ss->baud_base = tport->tp_tdev->td_is_3410 ? 921600 : 460800;
1397}
1398
1399
1400static void ti_handle_new_msr(struct ti_port *tport, u8 msr)
1401{
1402 struct async_icount *icount;
1403 struct tty_struct *tty;
1404 unsigned long flags;
1405
1406 dev_dbg(&tport->tp_port->dev, "%s - msr 0x%02X\n", __func__, msr);
1407
1408 if (msr & TI_MSR_DELTA_MASK) {
1409 spin_lock_irqsave(&tport->tp_lock, flags);
1410 icount = &tport->tp_port->icount;
1411 if (msr & TI_MSR_DELTA_CTS)
1412 icount->cts++;
1413 if (msr & TI_MSR_DELTA_DSR)
1414 icount->dsr++;
1415 if (msr & TI_MSR_DELTA_CD)
1416 icount->dcd++;
1417 if (msr & TI_MSR_DELTA_RI)
1418 icount->rng++;
1419 wake_up_interruptible(&tport->tp_port->port.delta_msr_wait);
1420 spin_unlock_irqrestore(&tport->tp_lock, flags);
1421 }
1422
1423 tport->tp_msr = msr & TI_MSR_MASK;
1424
1425 /* handle CTS flow control */
1426 tty = tty_port_tty_get(&tport->tp_port->port);
1427 if (tty && C_CRTSCTS(tty)) {
1428 if (msr & TI_MSR_CTS)
1429 tty_wakeup(tty);
1430 }
1431 tty_kref_put(tty);
1432}
1433
1434
1435static void ti_stop_read(struct ti_port *tport, struct tty_struct *tty)
1436{
1437 unsigned long flags;
1438
1439 spin_lock_irqsave(&tport->tp_lock, flags);
1440
1441 if (tport->tp_read_urb_state == TI_READ_URB_RUNNING)
1442 tport->tp_read_urb_state = TI_READ_URB_STOPPING;
1443
1444 spin_unlock_irqrestore(&tport->tp_lock, flags);
1445}
1446
1447
1448static int ti_restart_read(struct ti_port *tport, struct tty_struct *tty)
1449{
1450 struct urb *urb;
1451 int status = 0;
1452 unsigned long flags;
1453
1454 spin_lock_irqsave(&tport->tp_lock, flags);
1455
1456 if (tport->tp_read_urb_state == TI_READ_URB_STOPPED) {
1457 tport->tp_read_urb_state = TI_READ_URB_RUNNING;
1458 urb = tport->tp_port->read_urb;
1459 spin_unlock_irqrestore(&tport->tp_lock, flags);
1460 urb->context = tport;
1461 status = usb_submit_urb(urb, GFP_KERNEL);
1462 } else {
1463 tport->tp_read_urb_state = TI_READ_URB_RUNNING;
1464 spin_unlock_irqrestore(&tport->tp_lock, flags);
1465 }
1466
1467 return status;
1468}
1469
1470static int ti_command_out_sync(struct usb_device *udev, u8 command,
1471 u16 moduleid, u16 value, void *data, int size)
1472{
1473 int status;
1474
1475 status = usb_control_msg(udev, usb_sndctrlpipe(udev, 0), command,
1476 USB_TYPE_VENDOR | USB_RECIP_DEVICE | USB_DIR_OUT,
1477 value, moduleid, data, size, 1000);
1478 if (status < 0)
1479 return status;
1480
1481 return 0;
1482}
1483
1484static int ti_command_in_sync(struct usb_device *udev, u8 command,
1485 u16 moduleid, u16 value, void *data, int size)
1486{
1487 int status;
1488
1489 status = usb_control_msg(udev, usb_rcvctrlpipe(udev, 0), command,
1490 USB_TYPE_VENDOR | USB_RECIP_DEVICE | USB_DIR_IN,
1491 value, moduleid, data, size, 1000);
1492 if (status == size)
1493 status = 0;
1494 else if (status >= 0)
1495 status = -ECOMM;
1496
1497 return status;
1498}
1499
1500static int ti_port_cmd_out(struct usb_serial_port *port, u8 command,
1501 u16 value, void *data, int size)
1502{
1503 return ti_command_out_sync(port->serial->dev, command,
1504 TI_UART1_PORT + port->port_number,
1505 value, data, size);
1506}
1507
1508static int ti_port_cmd_in(struct usb_serial_port *port, u8 command,
1509 u16 value, void *data, int size)
1510{
1511 return ti_command_in_sync(port->serial->dev, command,
1512 TI_UART1_PORT + port->port_number,
1513 value, data, size);
1514}
1515
1516static int ti_write_byte(struct usb_serial_port *port,
1517 struct ti_device *tdev, unsigned long addr,
1518 u8 mask, u8 byte)
1519{
1520 int status;
1521 unsigned int size;
1522 struct ti_write_data_bytes *data;
1523
1524 dev_dbg(&port->dev, "%s - addr 0x%08lX, mask 0x%02X, byte 0x%02X\n", __func__,
1525 addr, mask, byte);
1526
1527 size = sizeof(struct ti_write_data_bytes) + 2;
1528 data = kmalloc(size, GFP_KERNEL);
1529 if (!data)
1530 return -ENOMEM;
1531
1532 data->bAddrType = TI_RW_DATA_ADDR_XDATA;
1533 data->bDataType = TI_RW_DATA_BYTE;
1534 data->bDataCounter = 1;
1535 data->wBaseAddrHi = cpu_to_be16(addr>>16);
1536 data->wBaseAddrLo = cpu_to_be16(addr);
1537 data->bData[0] = mask;
1538 data->bData[1] = byte;
1539
1540 status = ti_command_out_sync(port->serial->dev, TI_WRITE_DATA,
1541 TI_RAM_PORT, 0, data, size);
1542 if (status < 0)
1543 dev_err(&port->dev, "%s - failed, %d\n", __func__, status);
1544
1545 kfree(data);
1546
1547 return status;
1548}
1549
1550static int ti_do_download(struct usb_device *dev, int pipe,
1551 u8 *buffer, int size)
1552{
1553 int pos;
1554 u8 cs = 0;
1555 int done;
1556 struct ti_firmware_header *header;
1557 int status = 0;
1558 int len;
1559
1560 for (pos = sizeof(struct ti_firmware_header); pos < size; pos++)
1561 cs = (u8)(cs + buffer[pos]);
1562
1563 header = (struct ti_firmware_header *)buffer;
1564 header->wLength = cpu_to_le16(size - sizeof(*header));
1565 header->bCheckSum = cs;
1566
1567 dev_dbg(&dev->dev, "%s - downloading firmware\n", __func__);
1568 for (pos = 0; pos < size; pos += done) {
1569 len = min(size - pos, TI_DOWNLOAD_MAX_PACKET_SIZE);
1570 status = usb_bulk_msg(dev, pipe, buffer + pos, len,
1571 &done, 1000);
1572 if (status)
1573 break;
1574 }
1575 return status;
1576}
1577
1578static int ti_download_firmware(struct ti_device *tdev)
1579{
1580 int status;
1581 int buffer_size;
1582 u8 *buffer;
1583 struct usb_device *dev = tdev->td_serial->dev;
1584 unsigned int pipe = usb_sndbulkpipe(dev,
1585 tdev->td_serial->port[0]->bulk_out_endpointAddress);
1586 const struct firmware *fw_p;
1587 char buf[32];
1588
1589 if (le16_to_cpu(dev->descriptor.idVendor) == MXU1_VENDOR_ID) {
1590 snprintf(buf,
1591 sizeof(buf),
1592 "moxa/moxa-%04x.fw",
1593 le16_to_cpu(dev->descriptor.idProduct));
1594
1595 status = request_firmware(&fw_p, buf, &dev->dev);
1596 goto check_firmware;
1597 }
1598
1599 /* try ID specific firmware first, then try generic firmware */
1600 sprintf(buf, "ti_usb-v%04x-p%04x.fw",
1601 le16_to_cpu(dev->descriptor.idVendor),
1602 le16_to_cpu(dev->descriptor.idProduct));
1603 status = request_firmware(&fw_p, buf, &dev->dev);
1604
1605 if (status != 0) {
1606 buf[0] = '\0';
1607 if (le16_to_cpu(dev->descriptor.idVendor) == MTS_VENDOR_ID) {
1608 switch (le16_to_cpu(dev->descriptor.idProduct)) {
1609 case MTS_CDMA_PRODUCT_ID:
1610 strcpy(buf, "mts_cdma.fw");
1611 break;
1612 case MTS_GSM_PRODUCT_ID:
1613 strcpy(buf, "mts_gsm.fw");
1614 break;
1615 case MTS_EDGE_PRODUCT_ID:
1616 strcpy(buf, "mts_edge.fw");
1617 break;
1618 case MTS_MT9234MU_PRODUCT_ID:
1619 strcpy(buf, "mts_mt9234mu.fw");
1620 break;
1621 case MTS_MT9234ZBA_PRODUCT_ID:
1622 strcpy(buf, "mts_mt9234zba.fw");
1623 break;
1624 case MTS_MT9234ZBAOLD_PRODUCT_ID:
1625 strcpy(buf, "mts_mt9234zba.fw");
1626 break; }
1627 }
1628 if (buf[0] == '\0') {
1629 if (tdev->td_is_3410)
1630 strcpy(buf, "ti_3410.fw");
1631 else
1632 strcpy(buf, "ti_5052.fw");
1633 }
1634 status = request_firmware(&fw_p, buf, &dev->dev);
1635 }
1636
1637check_firmware:
1638 if (status) {
1639 dev_err(&dev->dev, "%s - firmware not found\n", __func__);
1640 return -ENOENT;
1641 }
1642 if (fw_p->size > TI_FIRMWARE_BUF_SIZE) {
1643 dev_err(&dev->dev, "%s - firmware too large %zu\n", __func__, fw_p->size);
1644 release_firmware(fw_p);
1645 return -ENOENT;
1646 }
1647
1648 buffer_size = TI_FIRMWARE_BUF_SIZE + sizeof(struct ti_firmware_header);
1649 buffer = kmalloc(buffer_size, GFP_KERNEL);
1650 if (buffer) {
1651 memcpy(buffer, fw_p->data, fw_p->size);
1652 memset(buffer + fw_p->size, 0xff, buffer_size - fw_p->size);
1653 status = ti_do_download(dev, pipe, buffer, fw_p->size);
1654 kfree(buffer);
1655 } else {
1656 status = -ENOMEM;
1657 }
1658 release_firmware(fw_p);
1659 if (status) {
1660 dev_err(&dev->dev, "%s - error downloading firmware, %d\n",
1661 __func__, status);
1662 return status;
1663 }
1664
1665 dev_dbg(&dev->dev, "%s - download successful\n", __func__);
1666
1667 return 0;
1668}
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, struct ktermios *old_termios);
318static int ti_tiocmget(struct tty_struct *tty);
319static int ti_tiocmset(struct tty_struct *tty,
320 unsigned int set, unsigned int clear);
321static void ti_break(struct tty_struct *tty, int break_state);
322static void ti_interrupt_callback(struct urb *urb);
323static void ti_bulk_in_callback(struct urb *urb);
324static void ti_bulk_out_callback(struct urb *urb);
325
326static void ti_recv(struct usb_serial_port *port, unsigned char *data,
327 int length);
328static void ti_send(struct ti_port *tport);
329static int ti_set_mcr(struct ti_port *tport, unsigned int mcr);
330static int ti_get_lsr(struct ti_port *tport, u8 *lsr);
331static void ti_get_serial_info(struct tty_struct *tty, struct serial_struct *ss);
332static void ti_handle_new_msr(struct ti_port *tport, u8 msr);
333
334static void ti_stop_read(struct ti_port *tport, struct tty_struct *tty);
335static int ti_restart_read(struct ti_port *tport, struct tty_struct *tty);
336
337static int ti_command_out_sync(struct usb_device *udev, u8 command,
338 u16 moduleid, u16 value, void *data, int size);
339static int ti_command_in_sync(struct usb_device *udev, u8 command,
340 u16 moduleid, u16 value, void *data, int size);
341static int ti_port_cmd_out(struct usb_serial_port *port, u8 command,
342 u16 value, void *data, int size);
343static int ti_port_cmd_in(struct usb_serial_port *port, u8 command,
344 u16 value, void *data, int size);
345
346static int ti_write_byte(struct usb_serial_port *port, struct ti_device *tdev,
347 unsigned long addr, u8 mask, u8 byte);
348
349static int ti_download_firmware(struct ti_device *tdev);
350
351static const struct usb_device_id ti_id_table_3410[] = {
352 { USB_DEVICE(TI_VENDOR_ID, TI_3410_PRODUCT_ID) },
353 { USB_DEVICE(TI_VENDOR_ID, TI_3410_EZ430_ID) },
354 { USB_DEVICE(MTS_VENDOR_ID, MTS_GSM_NO_FW_PRODUCT_ID) },
355 { USB_DEVICE(MTS_VENDOR_ID, MTS_CDMA_NO_FW_PRODUCT_ID) },
356 { USB_DEVICE(MTS_VENDOR_ID, MTS_CDMA_PRODUCT_ID) },
357 { USB_DEVICE(MTS_VENDOR_ID, MTS_GSM_PRODUCT_ID) },
358 { USB_DEVICE(MTS_VENDOR_ID, MTS_EDGE_PRODUCT_ID) },
359 { USB_DEVICE(MTS_VENDOR_ID, MTS_MT9234MU_PRODUCT_ID) },
360 { USB_DEVICE(MTS_VENDOR_ID, MTS_MT9234ZBA_PRODUCT_ID) },
361 { USB_DEVICE(MTS_VENDOR_ID, MTS_MT9234ZBAOLD_PRODUCT_ID) },
362 { USB_DEVICE(IBM_VENDOR_ID, IBM_4543_PRODUCT_ID) },
363 { USB_DEVICE(IBM_VENDOR_ID, IBM_454B_PRODUCT_ID) },
364 { USB_DEVICE(IBM_VENDOR_ID, IBM_454C_PRODUCT_ID) },
365 { USB_DEVICE(ABBOTT_VENDOR_ID, ABBOTT_STEREO_PLUG_ID) },
366 { USB_DEVICE(ABBOTT_VENDOR_ID, ABBOTT_STRIP_PORT_ID) },
367 { USB_DEVICE(TI_VENDOR_ID, FRI2_PRODUCT_ID) },
368 { USB_DEVICE(HONEYWELL_VENDOR_ID, HONEYWELL_HGI80_PRODUCT_ID) },
369 { USB_DEVICE(MXU1_VENDOR_ID, MXU1_1110_PRODUCT_ID) },
370 { USB_DEVICE(MXU1_VENDOR_ID, MXU1_1130_PRODUCT_ID) },
371 { USB_DEVICE(MXU1_VENDOR_ID, MXU1_1131_PRODUCT_ID) },
372 { USB_DEVICE(MXU1_VENDOR_ID, MXU1_1150_PRODUCT_ID) },
373 { USB_DEVICE(MXU1_VENDOR_ID, MXU1_1151_PRODUCT_ID) },
374 { USB_DEVICE(STARTECH_VENDOR_ID, TI_3410_PRODUCT_ID) },
375 { } /* terminator */
376};
377
378static const struct usb_device_id ti_id_table_5052[] = {
379 { USB_DEVICE(TI_VENDOR_ID, TI_5052_BOOT_PRODUCT_ID) },
380 { USB_DEVICE(TI_VENDOR_ID, TI_5152_BOOT_PRODUCT_ID) },
381 { USB_DEVICE(TI_VENDOR_ID, TI_5052_EEPROM_PRODUCT_ID) },
382 { USB_DEVICE(TI_VENDOR_ID, TI_5052_FIRMWARE_PRODUCT_ID) },
383 { }
384};
385
386static const struct usb_device_id ti_id_table_combined[] = {
387 { USB_DEVICE(TI_VENDOR_ID, TI_3410_PRODUCT_ID) },
388 { USB_DEVICE(TI_VENDOR_ID, TI_3410_EZ430_ID) },
389 { USB_DEVICE(MTS_VENDOR_ID, MTS_GSM_NO_FW_PRODUCT_ID) },
390 { USB_DEVICE(MTS_VENDOR_ID, MTS_CDMA_NO_FW_PRODUCT_ID) },
391 { USB_DEVICE(MTS_VENDOR_ID, MTS_CDMA_PRODUCT_ID) },
392 { USB_DEVICE(MTS_VENDOR_ID, MTS_GSM_PRODUCT_ID) },
393 { USB_DEVICE(MTS_VENDOR_ID, MTS_EDGE_PRODUCT_ID) },
394 { USB_DEVICE(MTS_VENDOR_ID, MTS_MT9234MU_PRODUCT_ID) },
395 { USB_DEVICE(MTS_VENDOR_ID, MTS_MT9234ZBA_PRODUCT_ID) },
396 { USB_DEVICE(MTS_VENDOR_ID, MTS_MT9234ZBAOLD_PRODUCT_ID) },
397 { USB_DEVICE(TI_VENDOR_ID, TI_5052_BOOT_PRODUCT_ID) },
398 { USB_DEVICE(TI_VENDOR_ID, TI_5152_BOOT_PRODUCT_ID) },
399 { USB_DEVICE(TI_VENDOR_ID, TI_5052_EEPROM_PRODUCT_ID) },
400 { USB_DEVICE(TI_VENDOR_ID, TI_5052_FIRMWARE_PRODUCT_ID) },
401 { USB_DEVICE(IBM_VENDOR_ID, IBM_4543_PRODUCT_ID) },
402 { USB_DEVICE(IBM_VENDOR_ID, IBM_454B_PRODUCT_ID) },
403 { USB_DEVICE(IBM_VENDOR_ID, IBM_454C_PRODUCT_ID) },
404 { USB_DEVICE(ABBOTT_VENDOR_ID, ABBOTT_PRODUCT_ID) },
405 { USB_DEVICE(ABBOTT_VENDOR_ID, ABBOTT_STRIP_PORT_ID) },
406 { USB_DEVICE(TI_VENDOR_ID, FRI2_PRODUCT_ID) },
407 { USB_DEVICE(HONEYWELL_VENDOR_ID, HONEYWELL_HGI80_PRODUCT_ID) },
408 { USB_DEVICE(MXU1_VENDOR_ID, MXU1_1110_PRODUCT_ID) },
409 { USB_DEVICE(MXU1_VENDOR_ID, MXU1_1130_PRODUCT_ID) },
410 { USB_DEVICE(MXU1_VENDOR_ID, MXU1_1131_PRODUCT_ID) },
411 { USB_DEVICE(MXU1_VENDOR_ID, MXU1_1150_PRODUCT_ID) },
412 { USB_DEVICE(MXU1_VENDOR_ID, MXU1_1151_PRODUCT_ID) },
413 { USB_DEVICE(STARTECH_VENDOR_ID, TI_3410_PRODUCT_ID) },
414 { } /* terminator */
415};
416
417static struct usb_serial_driver ti_1port_device = {
418 .driver = {
419 .owner = THIS_MODULE,
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 .owner = THIS_MODULE,
453 .name = "ti_usb_3410_5052_2",
454 },
455 .description = "TI USB 5052 2 port adapter",
456 .id_table = ti_id_table_5052,
457 .num_ports = 2,
458 .num_bulk_out = 1,
459 .attach = ti_startup,
460 .release = ti_release,
461 .port_probe = ti_port_probe,
462 .port_remove = ti_port_remove,
463 .open = ti_open,
464 .close = ti_close,
465 .write = ti_write,
466 .write_room = ti_write_room,
467 .chars_in_buffer = ti_chars_in_buffer,
468 .tx_empty = ti_tx_empty,
469 .throttle = ti_throttle,
470 .unthrottle = ti_unthrottle,
471 .get_serial = ti_get_serial_info,
472 .set_termios = ti_set_termios,
473 .tiocmget = ti_tiocmget,
474 .tiocmset = ti_tiocmset,
475 .tiocmiwait = usb_serial_generic_tiocmiwait,
476 .get_icount = usb_serial_generic_get_icount,
477 .break_ctl = ti_break,
478 .read_int_callback = ti_interrupt_callback,
479 .read_bulk_callback = ti_bulk_in_callback,
480 .write_bulk_callback = ti_bulk_out_callback,
481};
482
483static struct usb_serial_driver * const serial_drivers[] = {
484 &ti_1port_device, &ti_2port_device, NULL
485};
486
487MODULE_AUTHOR(TI_DRIVER_AUTHOR);
488MODULE_DESCRIPTION(TI_DRIVER_DESC);
489MODULE_LICENSE("GPL");
490
491MODULE_FIRMWARE("ti_3410.fw");
492MODULE_FIRMWARE("ti_5052.fw");
493MODULE_FIRMWARE("mts_cdma.fw");
494MODULE_FIRMWARE("mts_gsm.fw");
495MODULE_FIRMWARE("mts_edge.fw");
496MODULE_FIRMWARE("mts_mt9234mu.fw");
497MODULE_FIRMWARE("mts_mt9234zba.fw");
498MODULE_FIRMWARE("moxa/moxa-1110.fw");
499MODULE_FIRMWARE("moxa/moxa-1130.fw");
500MODULE_FIRMWARE("moxa/moxa-1131.fw");
501MODULE_FIRMWARE("moxa/moxa-1150.fw");
502MODULE_FIRMWARE("moxa/moxa-1151.fw");
503
504MODULE_DEVICE_TABLE(usb, ti_id_table_combined);
505
506module_usb_serial_driver(serial_drivers, ti_id_table_combined);
507
508static int ti_startup(struct usb_serial *serial)
509{
510 struct ti_device *tdev;
511 struct usb_device *dev = serial->dev;
512 struct usb_host_interface *cur_altsetting;
513 int num_endpoints;
514 u16 vid, pid;
515 int status;
516
517 dev_dbg(&dev->dev,
518 "%s - product 0x%4X, num configurations %d, configuration value %d\n",
519 __func__, le16_to_cpu(dev->descriptor.idProduct),
520 dev->descriptor.bNumConfigurations,
521 dev->actconfig->desc.bConfigurationValue);
522
523 tdev = kzalloc(sizeof(struct ti_device), GFP_KERNEL);
524 if (!tdev)
525 return -ENOMEM;
526
527 mutex_init(&tdev->td_open_close_lock);
528 tdev->td_serial = serial;
529 usb_set_serial_data(serial, tdev);
530
531 /* determine device type */
532 if (serial->type == &ti_1port_device)
533 tdev->td_is_3410 = 1;
534 dev_dbg(&dev->dev, "%s - device type is %s\n", __func__,
535 tdev->td_is_3410 ? "3410" : "5052");
536
537 vid = le16_to_cpu(dev->descriptor.idVendor);
538 pid = le16_to_cpu(dev->descriptor.idProduct);
539 if (vid == MXU1_VENDOR_ID) {
540 switch (pid) {
541 case MXU1_1130_PRODUCT_ID:
542 case MXU1_1131_PRODUCT_ID:
543 tdev->td_rs485_only = true;
544 break;
545 }
546 }
547
548 cur_altsetting = serial->interface->cur_altsetting;
549 num_endpoints = cur_altsetting->desc.bNumEndpoints;
550
551 /* if we have only 1 configuration and 1 endpoint, download firmware */
552 if (dev->descriptor.bNumConfigurations == 1 && num_endpoints == 1) {
553 status = ti_download_firmware(tdev);
554
555 if (status != 0)
556 goto free_tdev;
557
558 /* 3410 must be reset, 5052 resets itself */
559 if (tdev->td_is_3410) {
560 msleep_interruptible(100);
561 usb_reset_device(dev);
562 }
563
564 status = -ENODEV;
565 goto free_tdev;
566 }
567
568 /* the second configuration must be set */
569 if (dev->actconfig->desc.bConfigurationValue == TI_BOOT_CONFIG) {
570 status = usb_driver_set_configuration(dev, TI_ACTIVE_CONFIG);
571 status = status ? status : -ENODEV;
572 goto free_tdev;
573 }
574
575 if (serial->num_bulk_in < serial->num_ports ||
576 serial->num_bulk_out < serial->num_ports) {
577 dev_err(&serial->interface->dev, "missing endpoints\n");
578 status = -ENODEV;
579 goto free_tdev;
580 }
581
582 return 0;
583
584free_tdev:
585 kfree(tdev);
586 usb_set_serial_data(serial, NULL);
587 return status;
588}
589
590
591static void ti_release(struct usb_serial *serial)
592{
593 struct ti_device *tdev = usb_get_serial_data(serial);
594
595 kfree(tdev);
596}
597
598static int ti_port_probe(struct usb_serial_port *port)
599{
600 struct ti_port *tport;
601
602 tport = kzalloc(sizeof(*tport), GFP_KERNEL);
603 if (!tport)
604 return -ENOMEM;
605
606 spin_lock_init(&tport->tp_lock);
607 if (port == port->serial->port[0])
608 tport->tp_uart_base_addr = TI_UART1_BASE_ADDR;
609 else
610 tport->tp_uart_base_addr = TI_UART2_BASE_ADDR;
611 tport->tp_port = port;
612 tport->tp_tdev = usb_get_serial_data(port->serial);
613
614 if (tport->tp_tdev->td_rs485_only)
615 tport->tp_uart_mode = TI_UART_485_RECEIVER_DISABLED;
616 else
617 tport->tp_uart_mode = TI_UART_232;
618
619 usb_set_serial_port_data(port, tport);
620
621 /*
622 * The TUSB5052 LSR does not tell when the transmitter shift register
623 * has emptied so add a one-character drain delay.
624 */
625 if (!tport->tp_tdev->td_is_3410)
626 port->port.drain_delay = 1;
627
628 return 0;
629}
630
631static void ti_port_remove(struct usb_serial_port *port)
632{
633 struct ti_port *tport;
634
635 tport = usb_get_serial_port_data(port);
636 kfree(tport);
637}
638
639static int ti_open(struct tty_struct *tty, struct usb_serial_port *port)
640{
641 struct ti_port *tport = usb_get_serial_port_data(port);
642 struct ti_device *tdev;
643 struct usb_device *dev;
644 struct urb *urb;
645 int status;
646 u16 open_settings;
647
648 open_settings = (TI_PIPE_MODE_CONTINUOUS |
649 TI_PIPE_TIMEOUT_ENABLE |
650 (TI_TRANSFER_TIMEOUT << 2));
651
652 dev = port->serial->dev;
653 tdev = tport->tp_tdev;
654
655 /* only one open on any port on a device at a time */
656 if (mutex_lock_interruptible(&tdev->td_open_close_lock))
657 return -ERESTARTSYS;
658
659 tport->tp_msr = 0;
660 tport->tp_shadow_mcr |= (TI_MCR_RTS | TI_MCR_DTR);
661
662 /* start interrupt urb the first time a port is opened on this device */
663 if (tdev->td_open_port_count == 0) {
664 dev_dbg(&port->dev, "%s - start interrupt in urb\n", __func__);
665 urb = tdev->td_serial->port[0]->interrupt_in_urb;
666 if (!urb) {
667 dev_err(&port->dev, "%s - no interrupt urb\n", __func__);
668 status = -EINVAL;
669 goto release_lock;
670 }
671 urb->context = tdev;
672 status = usb_submit_urb(urb, GFP_KERNEL);
673 if (status) {
674 dev_err(&port->dev, "%s - submit interrupt urb failed, %d\n", __func__, status);
675 goto release_lock;
676 }
677 }
678
679 if (tty)
680 ti_set_termios(tty, port, &tty->termios);
681
682 status = ti_port_cmd_out(port, TI_OPEN_PORT, open_settings, NULL, 0);
683 if (status) {
684 dev_err(&port->dev, "%s - cannot send open command, %d\n",
685 __func__, status);
686 goto unlink_int_urb;
687 }
688
689 status = ti_port_cmd_out(port, TI_START_PORT, 0, NULL, 0);
690 if (status) {
691 dev_err(&port->dev, "%s - cannot send start command, %d\n",
692 __func__, status);
693 goto unlink_int_urb;
694 }
695
696 status = ti_port_cmd_out(port, TI_PURGE_PORT, TI_PURGE_INPUT, NULL, 0);
697 if (status) {
698 dev_err(&port->dev, "%s - cannot clear input buffers, %d\n",
699 __func__, status);
700 goto unlink_int_urb;
701 }
702 status = ti_port_cmd_out(port, TI_PURGE_PORT, TI_PURGE_OUTPUT, NULL, 0);
703 if (status) {
704 dev_err(&port->dev, "%s - cannot clear output buffers, %d\n",
705 __func__, status);
706 goto unlink_int_urb;
707 }
708
709 /* reset the data toggle on the bulk endpoints to work around bug in
710 * host controllers where things get out of sync some times */
711 usb_clear_halt(dev, port->write_urb->pipe);
712 usb_clear_halt(dev, port->read_urb->pipe);
713
714 if (tty)
715 ti_set_termios(tty, port, &tty->termios);
716
717 status = ti_port_cmd_out(port, TI_OPEN_PORT, open_settings, NULL, 0);
718 if (status) {
719 dev_err(&port->dev, "%s - cannot send open command (2), %d\n",
720 __func__, status);
721 goto unlink_int_urb;
722 }
723
724 status = ti_port_cmd_out(port, TI_START_PORT, 0, NULL, 0);
725 if (status) {
726 dev_err(&port->dev, "%s - cannot send start command (2), %d\n",
727 __func__, status);
728 goto unlink_int_urb;
729 }
730
731 /* start read urb */
732 urb = port->read_urb;
733 if (!urb) {
734 dev_err(&port->dev, "%s - no read urb\n", __func__);
735 status = -EINVAL;
736 goto unlink_int_urb;
737 }
738 tport->tp_read_urb_state = TI_READ_URB_RUNNING;
739 urb->context = tport;
740 status = usb_submit_urb(urb, GFP_KERNEL);
741 if (status) {
742 dev_err(&port->dev, "%s - submit read urb failed, %d\n",
743 __func__, status);
744 goto unlink_int_urb;
745 }
746
747 tport->tp_is_open = 1;
748 ++tdev->td_open_port_count;
749
750 goto release_lock;
751
752unlink_int_urb:
753 if (tdev->td_open_port_count == 0)
754 usb_kill_urb(port->serial->port[0]->interrupt_in_urb);
755release_lock:
756 mutex_unlock(&tdev->td_open_close_lock);
757 return status;
758}
759
760
761static void ti_close(struct usb_serial_port *port)
762{
763 struct ti_device *tdev;
764 struct ti_port *tport;
765 int status;
766 unsigned long flags;
767
768 tdev = usb_get_serial_data(port->serial);
769 tport = usb_get_serial_port_data(port);
770
771 tport->tp_is_open = 0;
772
773 usb_kill_urb(port->read_urb);
774 usb_kill_urb(port->write_urb);
775 tport->tp_write_urb_in_use = 0;
776 spin_lock_irqsave(&tport->tp_lock, flags);
777 kfifo_reset_out(&port->write_fifo);
778 spin_unlock_irqrestore(&tport->tp_lock, flags);
779
780 status = ti_port_cmd_out(port, TI_CLOSE_PORT, 0, NULL, 0);
781 if (status)
782 dev_err(&port->dev,
783 "%s - cannot send close port command, %d\n"
784 , __func__, status);
785
786 mutex_lock(&tdev->td_open_close_lock);
787 --tdev->td_open_port_count;
788 if (tdev->td_open_port_count == 0) {
789 /* last port is closed, shut down interrupt urb */
790 usb_kill_urb(port->serial->port[0]->interrupt_in_urb);
791 }
792 mutex_unlock(&tdev->td_open_close_lock);
793}
794
795
796static int ti_write(struct tty_struct *tty, struct usb_serial_port *port,
797 const unsigned char *data, int count)
798{
799 struct ti_port *tport = usb_get_serial_port_data(port);
800
801 if (count == 0) {
802 return 0;
803 }
804
805 if (!tport->tp_is_open)
806 return -ENODEV;
807
808 count = kfifo_in_locked(&port->write_fifo, data, count,
809 &tport->tp_lock);
810 ti_send(tport);
811
812 return count;
813}
814
815
816static unsigned int ti_write_room(struct tty_struct *tty)
817{
818 struct usb_serial_port *port = tty->driver_data;
819 struct ti_port *tport = usb_get_serial_port_data(port);
820 unsigned int room;
821 unsigned long flags;
822
823 spin_lock_irqsave(&tport->tp_lock, flags);
824 room = kfifo_avail(&port->write_fifo);
825 spin_unlock_irqrestore(&tport->tp_lock, flags);
826
827 dev_dbg(&port->dev, "%s - returns %u\n", __func__, room);
828 return room;
829}
830
831
832static unsigned int ti_chars_in_buffer(struct tty_struct *tty)
833{
834 struct usb_serial_port *port = tty->driver_data;
835 struct ti_port *tport = usb_get_serial_port_data(port);
836 unsigned int chars;
837 unsigned long flags;
838
839 spin_lock_irqsave(&tport->tp_lock, flags);
840 chars = kfifo_len(&port->write_fifo);
841 spin_unlock_irqrestore(&tport->tp_lock, flags);
842
843 dev_dbg(&port->dev, "%s - returns %u\n", __func__, chars);
844 return chars;
845}
846
847static bool ti_tx_empty(struct usb_serial_port *port)
848{
849 struct ti_port *tport = usb_get_serial_port_data(port);
850 u8 lsr, mask;
851 int ret;
852
853 /*
854 * TUSB5052 does not have the TEMT bit to tell if the shift register
855 * is empty.
856 */
857 if (tport->tp_tdev->td_is_3410)
858 mask = TI_LSR_TX_EMPTY_BOTH;
859 else
860 mask = TI_LSR_TX_EMPTY;
861
862 ret = ti_get_lsr(tport, &lsr);
863 if (!ret && !(lsr & mask))
864 return false;
865
866 return true;
867}
868
869static void ti_throttle(struct tty_struct *tty)
870{
871 struct usb_serial_port *port = tty->driver_data;
872 struct ti_port *tport = usb_get_serial_port_data(port);
873
874 if (I_IXOFF(tty) || C_CRTSCTS(tty))
875 ti_stop_read(tport, tty);
876
877}
878
879
880static void ti_unthrottle(struct tty_struct *tty)
881{
882 struct usb_serial_port *port = tty->driver_data;
883 struct ti_port *tport = usb_get_serial_port_data(port);
884 int status;
885
886 if (I_IXOFF(tty) || C_CRTSCTS(tty)) {
887 status = ti_restart_read(tport, tty);
888 if (status)
889 dev_err(&port->dev, "%s - cannot restart read, %d\n",
890 __func__, status);
891 }
892}
893
894static void ti_set_termios(struct tty_struct *tty,
895 struct usb_serial_port *port, 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 void 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}
1087
1088static int ti_get_port_from_code(unsigned char code)
1089{
1090 return (code >> 6) & 0x01;
1091}
1092
1093static int ti_get_func_from_code(unsigned char code)
1094{
1095 return code & 0x0f;
1096}
1097
1098static void ti_interrupt_callback(struct urb *urb)
1099{
1100 struct ti_device *tdev = urb->context;
1101 struct usb_serial_port *port;
1102 struct usb_serial *serial = tdev->td_serial;
1103 struct ti_port *tport;
1104 struct device *dev = &urb->dev->dev;
1105 unsigned char *data = urb->transfer_buffer;
1106 int length = urb->actual_length;
1107 int port_number;
1108 int function;
1109 int status = urb->status;
1110 int retval;
1111 u8 msr;
1112
1113 switch (status) {
1114 case 0:
1115 break;
1116 case -ECONNRESET:
1117 case -ENOENT:
1118 case -ESHUTDOWN:
1119 dev_dbg(dev, "%s - urb shutting down, %d\n", __func__, status);
1120 return;
1121 default:
1122 dev_err(dev, "%s - nonzero urb status, %d\n", __func__, status);
1123 goto exit;
1124 }
1125
1126 if (length != 2) {
1127 dev_dbg(dev, "%s - bad packet size, %d\n", __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 dev_dbg(dev, "%s - port_number %d, function %d, data 0x%02X\n",
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 dev_dbg(dev, "%s - port %d, msr 0x%02X\n", __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 unsigned long flags;
1187 int retval = 0;
1188
1189 switch (status) {
1190 case 0:
1191 break;
1192 case -ECONNRESET:
1193 case -ENOENT:
1194 case -ESHUTDOWN:
1195 dev_dbg(dev, "%s - urb shutting down, %d\n", __func__, status);
1196 return;
1197 default:
1198 dev_err(dev, "%s - nonzero urb status, %d\n",
1199 __func__, status);
1200 }
1201
1202 if (status == -EPIPE)
1203 goto exit;
1204
1205 if (status) {
1206 dev_err(dev, "%s - stopping read!\n", __func__);
1207 return;
1208 }
1209
1210 if (urb->actual_length) {
1211 usb_serial_debug_data(dev, __func__, urb->actual_length,
1212 urb->transfer_buffer);
1213
1214 if (!tport->tp_is_open)
1215 dev_dbg(dev, "%s - port closed, dropping data\n",
1216 __func__);
1217 else
1218 ti_recv(port, urb->transfer_buffer, urb->actual_length);
1219 spin_lock_irqsave(&tport->tp_lock, flags);
1220 port->icount.rx += urb->actual_length;
1221 spin_unlock_irqrestore(&tport->tp_lock, flags);
1222 }
1223
1224exit:
1225 /* continue to read unless stopping */
1226 spin_lock_irqsave(&tport->tp_lock, flags);
1227 if (tport->tp_read_urb_state == TI_READ_URB_RUNNING)
1228 retval = usb_submit_urb(urb, GFP_ATOMIC);
1229 else if (tport->tp_read_urb_state == TI_READ_URB_STOPPING)
1230 tport->tp_read_urb_state = TI_READ_URB_STOPPED;
1231
1232 spin_unlock_irqrestore(&tport->tp_lock, flags);
1233 if (retval)
1234 dev_err(dev, "%s - resubmit read urb failed, %d\n",
1235 __func__, retval);
1236}
1237
1238
1239static void ti_bulk_out_callback(struct urb *urb)
1240{
1241 struct ti_port *tport = urb->context;
1242 struct usb_serial_port *port = tport->tp_port;
1243 int status = urb->status;
1244
1245 tport->tp_write_urb_in_use = 0;
1246
1247 switch (status) {
1248 case 0:
1249 break;
1250 case -ECONNRESET:
1251 case -ENOENT:
1252 case -ESHUTDOWN:
1253 dev_dbg(&port->dev, "%s - urb shutting down, %d\n", __func__, status);
1254 return;
1255 default:
1256 dev_err_console(port, "%s - nonzero urb status, %d\n",
1257 __func__, status);
1258 }
1259
1260 /* send any buffered data */
1261 ti_send(tport);
1262}
1263
1264
1265static void ti_recv(struct usb_serial_port *port, unsigned char *data,
1266 int length)
1267{
1268 int cnt;
1269
1270 do {
1271 cnt = tty_insert_flip_string(&port->port, data, length);
1272 if (cnt < length) {
1273 dev_err(&port->dev, "%s - dropping data, %d bytes lost\n",
1274 __func__, length - cnt);
1275 if (cnt == 0)
1276 break;
1277 }
1278 tty_flip_buffer_push(&port->port);
1279 data += cnt;
1280 length -= cnt;
1281 } while (length > 0);
1282}
1283
1284
1285static void ti_send(struct ti_port *tport)
1286{
1287 int count, result;
1288 struct usb_serial_port *port = tport->tp_port;
1289 unsigned long flags;
1290
1291 spin_lock_irqsave(&tport->tp_lock, flags);
1292
1293 if (tport->tp_write_urb_in_use)
1294 goto unlock;
1295
1296 count = kfifo_out(&port->write_fifo,
1297 port->write_urb->transfer_buffer,
1298 port->bulk_out_size);
1299
1300 if (count == 0)
1301 goto unlock;
1302
1303 tport->tp_write_urb_in_use = 1;
1304
1305 spin_unlock_irqrestore(&tport->tp_lock, flags);
1306
1307 usb_serial_debug_data(&port->dev, __func__, count,
1308 port->write_urb->transfer_buffer);
1309
1310 usb_fill_bulk_urb(port->write_urb, port->serial->dev,
1311 usb_sndbulkpipe(port->serial->dev,
1312 port->bulk_out_endpointAddress),
1313 port->write_urb->transfer_buffer, count,
1314 ti_bulk_out_callback, tport);
1315
1316 result = usb_submit_urb(port->write_urb, GFP_ATOMIC);
1317 if (result) {
1318 dev_err_console(port, "%s - submit write urb failed, %d\n",
1319 __func__, result);
1320 tport->tp_write_urb_in_use = 0;
1321 /* TODO: reschedule ti_send */
1322 } else {
1323 spin_lock_irqsave(&tport->tp_lock, flags);
1324 port->icount.tx += count;
1325 spin_unlock_irqrestore(&tport->tp_lock, flags);
1326 }
1327
1328 /* more room in the buffer for new writes, wakeup */
1329 tty_port_tty_wakeup(&port->port);
1330
1331 return;
1332unlock:
1333 spin_unlock_irqrestore(&tport->tp_lock, flags);
1334 return;
1335}
1336
1337
1338static int ti_set_mcr(struct ti_port *tport, unsigned int mcr)
1339{
1340 unsigned long flags;
1341 int status;
1342
1343 status = ti_write_byte(tport->tp_port, tport->tp_tdev,
1344 tport->tp_uart_base_addr + TI_UART_OFFSET_MCR,
1345 TI_MCR_RTS | TI_MCR_DTR | TI_MCR_LOOP, mcr);
1346
1347 spin_lock_irqsave(&tport->tp_lock, flags);
1348 if (!status)
1349 tport->tp_shadow_mcr = mcr;
1350 spin_unlock_irqrestore(&tport->tp_lock, flags);
1351
1352 return status;
1353}
1354
1355
1356static int ti_get_lsr(struct ti_port *tport, u8 *lsr)
1357{
1358 int size, status;
1359 struct usb_serial_port *port = tport->tp_port;
1360 struct ti_port_status *data;
1361
1362 size = sizeof(struct ti_port_status);
1363 data = kmalloc(size, GFP_KERNEL);
1364 if (!data)
1365 return -ENOMEM;
1366
1367 status = ti_port_cmd_in(port, TI_GET_PORT_STATUS, 0, data, size);
1368 if (status) {
1369 dev_err(&port->dev,
1370 "%s - get port status command failed, %d\n",
1371 __func__, status);
1372 goto free_data;
1373 }
1374
1375 dev_dbg(&port->dev, "%s - lsr 0x%02X\n", __func__, data->bLSR);
1376
1377 *lsr = data->bLSR;
1378
1379free_data:
1380 kfree(data);
1381 return status;
1382}
1383
1384
1385static void ti_get_serial_info(struct tty_struct *tty, struct serial_struct *ss)
1386{
1387 struct usb_serial_port *port = tty->driver_data;
1388 struct ti_port *tport = usb_get_serial_port_data(port);
1389
1390 ss->baud_base = tport->tp_tdev->td_is_3410 ? 921600 : 460800;
1391}
1392
1393
1394static void ti_handle_new_msr(struct ti_port *tport, u8 msr)
1395{
1396 struct async_icount *icount;
1397 struct tty_struct *tty;
1398 unsigned long flags;
1399
1400 dev_dbg(&tport->tp_port->dev, "%s - msr 0x%02X\n", __func__, msr);
1401
1402 if (msr & TI_MSR_DELTA_MASK) {
1403 spin_lock_irqsave(&tport->tp_lock, flags);
1404 icount = &tport->tp_port->icount;
1405 if (msr & TI_MSR_DELTA_CTS)
1406 icount->cts++;
1407 if (msr & TI_MSR_DELTA_DSR)
1408 icount->dsr++;
1409 if (msr & TI_MSR_DELTA_CD)
1410 icount->dcd++;
1411 if (msr & TI_MSR_DELTA_RI)
1412 icount->rng++;
1413 wake_up_interruptible(&tport->tp_port->port.delta_msr_wait);
1414 spin_unlock_irqrestore(&tport->tp_lock, flags);
1415 }
1416
1417 tport->tp_msr = msr & TI_MSR_MASK;
1418
1419 /* handle CTS flow control */
1420 tty = tty_port_tty_get(&tport->tp_port->port);
1421 if (tty && C_CRTSCTS(tty)) {
1422 if (msr & TI_MSR_CTS)
1423 tty_wakeup(tty);
1424 }
1425 tty_kref_put(tty);
1426}
1427
1428
1429static void ti_stop_read(struct ti_port *tport, struct tty_struct *tty)
1430{
1431 unsigned long flags;
1432
1433 spin_lock_irqsave(&tport->tp_lock, flags);
1434
1435 if (tport->tp_read_urb_state == TI_READ_URB_RUNNING)
1436 tport->tp_read_urb_state = TI_READ_URB_STOPPING;
1437
1438 spin_unlock_irqrestore(&tport->tp_lock, flags);
1439}
1440
1441
1442static int ti_restart_read(struct ti_port *tport, struct tty_struct *tty)
1443{
1444 struct urb *urb;
1445 int status = 0;
1446 unsigned long flags;
1447
1448 spin_lock_irqsave(&tport->tp_lock, flags);
1449
1450 if (tport->tp_read_urb_state == TI_READ_URB_STOPPED) {
1451 tport->tp_read_urb_state = TI_READ_URB_RUNNING;
1452 urb = tport->tp_port->read_urb;
1453 spin_unlock_irqrestore(&tport->tp_lock, flags);
1454 urb->context = tport;
1455 status = usb_submit_urb(urb, GFP_KERNEL);
1456 } else {
1457 tport->tp_read_urb_state = TI_READ_URB_RUNNING;
1458 spin_unlock_irqrestore(&tport->tp_lock, flags);
1459 }
1460
1461 return status;
1462}
1463
1464static int ti_command_out_sync(struct usb_device *udev, u8 command,
1465 u16 moduleid, u16 value, void *data, int size)
1466{
1467 int status;
1468
1469 status = usb_control_msg(udev, usb_sndctrlpipe(udev, 0), command,
1470 USB_TYPE_VENDOR | USB_RECIP_DEVICE | USB_DIR_OUT,
1471 value, moduleid, data, size, 1000);
1472 if (status < 0)
1473 return status;
1474
1475 return 0;
1476}
1477
1478static int ti_command_in_sync(struct usb_device *udev, u8 command,
1479 u16 moduleid, u16 value, void *data, int size)
1480{
1481 int status;
1482
1483 status = usb_control_msg(udev, usb_rcvctrlpipe(udev, 0), command,
1484 USB_TYPE_VENDOR | USB_RECIP_DEVICE | USB_DIR_IN,
1485 value, moduleid, data, size, 1000);
1486 if (status == size)
1487 status = 0;
1488 else if (status >= 0)
1489 status = -ECOMM;
1490
1491 return status;
1492}
1493
1494static int ti_port_cmd_out(struct usb_serial_port *port, u8 command,
1495 u16 value, void *data, int size)
1496{
1497 return ti_command_out_sync(port->serial->dev, command,
1498 TI_UART1_PORT + port->port_number,
1499 value, data, size);
1500}
1501
1502static int ti_port_cmd_in(struct usb_serial_port *port, u8 command,
1503 u16 value, void *data, int size)
1504{
1505 return ti_command_in_sync(port->serial->dev, command,
1506 TI_UART1_PORT + port->port_number,
1507 value, data, size);
1508}
1509
1510static int ti_write_byte(struct usb_serial_port *port,
1511 struct ti_device *tdev, unsigned long addr,
1512 u8 mask, u8 byte)
1513{
1514 int status;
1515 unsigned int size;
1516 struct ti_write_data_bytes *data;
1517
1518 dev_dbg(&port->dev, "%s - addr 0x%08lX, mask 0x%02X, byte 0x%02X\n", __func__,
1519 addr, mask, byte);
1520
1521 size = sizeof(struct ti_write_data_bytes) + 2;
1522 data = kmalloc(size, GFP_KERNEL);
1523 if (!data)
1524 return -ENOMEM;
1525
1526 data->bAddrType = TI_RW_DATA_ADDR_XDATA;
1527 data->bDataType = TI_RW_DATA_BYTE;
1528 data->bDataCounter = 1;
1529 data->wBaseAddrHi = cpu_to_be16(addr>>16);
1530 data->wBaseAddrLo = cpu_to_be16(addr);
1531 data->bData[0] = mask;
1532 data->bData[1] = byte;
1533
1534 status = ti_command_out_sync(port->serial->dev, TI_WRITE_DATA,
1535 TI_RAM_PORT, 0, data, size);
1536 if (status < 0)
1537 dev_err(&port->dev, "%s - failed, %d\n", __func__, status);
1538
1539 kfree(data);
1540
1541 return status;
1542}
1543
1544static int ti_do_download(struct usb_device *dev, int pipe,
1545 u8 *buffer, int size)
1546{
1547 int pos;
1548 u8 cs = 0;
1549 int done;
1550 struct ti_firmware_header *header;
1551 int status = 0;
1552 int len;
1553
1554 for (pos = sizeof(struct ti_firmware_header); pos < size; pos++)
1555 cs = (u8)(cs + buffer[pos]);
1556
1557 header = (struct ti_firmware_header *)buffer;
1558 header->wLength = cpu_to_le16(size - sizeof(*header));
1559 header->bCheckSum = cs;
1560
1561 dev_dbg(&dev->dev, "%s - downloading firmware\n", __func__);
1562 for (pos = 0; pos < size; pos += done) {
1563 len = min(size - pos, TI_DOWNLOAD_MAX_PACKET_SIZE);
1564 status = usb_bulk_msg(dev, pipe, buffer + pos, len,
1565 &done, 1000);
1566 if (status)
1567 break;
1568 }
1569 return status;
1570}
1571
1572static int ti_download_firmware(struct ti_device *tdev)
1573{
1574 int status;
1575 int buffer_size;
1576 u8 *buffer;
1577 struct usb_device *dev = tdev->td_serial->dev;
1578 unsigned int pipe = usb_sndbulkpipe(dev,
1579 tdev->td_serial->port[0]->bulk_out_endpointAddress);
1580 const struct firmware *fw_p;
1581 char buf[32];
1582
1583 if (le16_to_cpu(dev->descriptor.idVendor) == MXU1_VENDOR_ID) {
1584 snprintf(buf,
1585 sizeof(buf),
1586 "moxa/moxa-%04x.fw",
1587 le16_to_cpu(dev->descriptor.idProduct));
1588
1589 status = request_firmware(&fw_p, buf, &dev->dev);
1590 goto check_firmware;
1591 }
1592
1593 /* try ID specific firmware first, then try generic firmware */
1594 sprintf(buf, "ti_usb-v%04x-p%04x.fw",
1595 le16_to_cpu(dev->descriptor.idVendor),
1596 le16_to_cpu(dev->descriptor.idProduct));
1597 status = request_firmware(&fw_p, buf, &dev->dev);
1598
1599 if (status != 0) {
1600 buf[0] = '\0';
1601 if (le16_to_cpu(dev->descriptor.idVendor) == MTS_VENDOR_ID) {
1602 switch (le16_to_cpu(dev->descriptor.idProduct)) {
1603 case MTS_CDMA_PRODUCT_ID:
1604 strcpy(buf, "mts_cdma.fw");
1605 break;
1606 case MTS_GSM_PRODUCT_ID:
1607 strcpy(buf, "mts_gsm.fw");
1608 break;
1609 case MTS_EDGE_PRODUCT_ID:
1610 strcpy(buf, "mts_edge.fw");
1611 break;
1612 case MTS_MT9234MU_PRODUCT_ID:
1613 strcpy(buf, "mts_mt9234mu.fw");
1614 break;
1615 case MTS_MT9234ZBA_PRODUCT_ID:
1616 strcpy(buf, "mts_mt9234zba.fw");
1617 break;
1618 case MTS_MT9234ZBAOLD_PRODUCT_ID:
1619 strcpy(buf, "mts_mt9234zba.fw");
1620 break; }
1621 }
1622 if (buf[0] == '\0') {
1623 if (tdev->td_is_3410)
1624 strcpy(buf, "ti_3410.fw");
1625 else
1626 strcpy(buf, "ti_5052.fw");
1627 }
1628 status = request_firmware(&fw_p, buf, &dev->dev);
1629 }
1630
1631check_firmware:
1632 if (status) {
1633 dev_err(&dev->dev, "%s - firmware not found\n", __func__);
1634 return -ENOENT;
1635 }
1636 if (fw_p->size > TI_FIRMWARE_BUF_SIZE) {
1637 dev_err(&dev->dev, "%s - firmware too large %zu\n", __func__, fw_p->size);
1638 release_firmware(fw_p);
1639 return -ENOENT;
1640 }
1641
1642 buffer_size = TI_FIRMWARE_BUF_SIZE + sizeof(struct ti_firmware_header);
1643 buffer = kmalloc(buffer_size, GFP_KERNEL);
1644 if (buffer) {
1645 memcpy(buffer, fw_p->data, fw_p->size);
1646 memset(buffer + fw_p->size, 0xff, buffer_size - fw_p->size);
1647 status = ti_do_download(dev, pipe, buffer, fw_p->size);
1648 kfree(buffer);
1649 } else {
1650 status = -ENOMEM;
1651 }
1652 release_firmware(fw_p);
1653 if (status) {
1654 dev_err(&dev->dev, "%s - error downloading firmware, %d\n",
1655 __func__, status);
1656 return status;
1657 }
1658
1659 dev_dbg(&dev->dev, "%s - download successful\n", __func__);
1660
1661 return 0;
1662}