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