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 */ 179 struct 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 */ 191 struct 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 217 218 struct ti_write_data_bytes { 219 u8 bAddrType; 220 u8 bDataType; 221 u8 bDataCounter; 222 __be16 wBaseAddrHi; 223 __be16 wBaseAddrLo; 224 u8 bData[]; 225 } __packed; 226 227 struct ti_read_data_request { 228 u8 bAddrType; 229 u8 bDataType; 230 u8 bDataCounter; 231 __be16 wBaseAddrHi; 232 __be16 wBaseAddrLo; 233 } __packed; 234 235 struct ti_read_data_bytes { 236 u8 bCmdCode; 237 u8 bModuleId; 238 u8 bErrorCode; 239 u8 bData[]; 240 }; 241 242 /* Interrupt struct */ 243 struct 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 */ 257 struct 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 5 281 282 struct 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 }; 294 295 struct 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 }; 302 303 static int ti_startup(struct usb_serial *serial); 304 static void ti_release(struct usb_serial *serial); 305 static int ti_port_probe(struct usb_serial_port *port); 306 static void ti_port_remove(struct usb_serial_port *port); 307 static int ti_open(struct tty_struct *tty, struct usb_serial_port *port); 308 static void ti_close(struct usb_serial_port *port); 309 static int ti_write(struct tty_struct *tty, struct usb_serial_port *port, 310 const unsigned char *data, int count); 311 static unsigned int ti_write_room(struct tty_struct *tty); 312 static unsigned int ti_chars_in_buffer(struct tty_struct *tty); 313 static bool ti_tx_empty(struct usb_serial_port *port); 314 static void ti_throttle(struct tty_struct *tty); 315 static void ti_unthrottle(struct tty_struct *tty); 316 static void ti_set_termios(struct tty_struct *tty, 317 struct usb_serial_port *port, 318 const struct ktermios *old_termios); 319 static int ti_tiocmget(struct tty_struct *tty); 320 static int ti_tiocmset(struct tty_struct *tty, 321 unsigned int set, unsigned int clear); 322 static int ti_break(struct tty_struct *tty, int break_state); 323 static void ti_interrupt_callback(struct urb *urb); 324 static void ti_bulk_in_callback(struct urb *urb); 325 static void ti_bulk_out_callback(struct urb *urb); 326 327 static void ti_recv(struct usb_serial_port *port, unsigned char *data, 328 int length); 329 static void ti_send(struct ti_port *tport); 330 static int ti_set_mcr(struct ti_port *tport, unsigned int mcr); 331 static int ti_get_lsr(struct ti_port *tport, u8 *lsr); 332 static void ti_get_serial_info(struct tty_struct *tty, struct serial_struct *ss); 333 static void ti_handle_new_msr(struct ti_port *tport, u8 msr); 334 335 static void ti_stop_read(struct ti_port *tport, struct tty_struct *tty); 336 static int ti_restart_read(struct ti_port *tport, struct tty_struct *tty); 337 338 static int ti_command_out_sync(struct usb_device *udev, u8 command, 339 u16 moduleid, u16 value, void *data, int size); 340 static int ti_command_in_sync(struct usb_device *udev, u8 command, 341 u16 moduleid, u16 value, void *data, int size); 342 static int ti_port_cmd_out(struct usb_serial_port *port, u8 command, 343 u16 value, void *data, int size); 344 static int ti_port_cmd_in(struct usb_serial_port *port, u8 command, 345 u16 value, void *data, int size); 346 347 static int ti_write_byte(struct usb_serial_port *port, struct ti_device *tdev, 348 unsigned long addr, u8 mask, u8 byte); 349 350 static int ti_download_firmware(struct ti_device *tdev); 351 352 static 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 }; 378 379 static 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 }; 386 387 static 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 }; 417 418 static struct usb_serial_driver ti_1port_device = { 419 .driver = { 420 .name = "ti_usb_3410_5052_1", 421 }, 422 .description = "TI USB 3410 1 port adapter", 423 .id_table = ti_id_table_3410, 424 .num_ports = 1, 425 .num_bulk_out = 1, 426 .attach = ti_startup, 427 .release = ti_release, 428 .port_probe = ti_port_probe, 429 .port_remove = ti_port_remove, 430 .open = ti_open, 431 .close = ti_close, 432 .write = ti_write, 433 .write_room = ti_write_room, 434 .chars_in_buffer = ti_chars_in_buffer, 435 .tx_empty = ti_tx_empty, 436 .throttle = ti_throttle, 437 .unthrottle = ti_unthrottle, 438 .get_serial = ti_get_serial_info, 439 .set_termios = ti_set_termios, 440 .tiocmget = ti_tiocmget, 441 .tiocmset = ti_tiocmset, 442 .tiocmiwait = usb_serial_generic_tiocmiwait, 443 .get_icount = usb_serial_generic_get_icount, 444 .break_ctl = ti_break, 445 .read_int_callback = ti_interrupt_callback, 446 .read_bulk_callback = ti_bulk_in_callback, 447 .write_bulk_callback = ti_bulk_out_callback, 448 }; 449 450 static struct usb_serial_driver ti_2port_device = { 451 .driver = { 452 .name = "ti_usb_3410_5052_2", 453 }, 454 .description = "TI USB 5052 2 port adapter", 455 .id_table = ti_id_table_5052, 456 .num_ports = 2, 457 .num_bulk_out = 1, 458 .attach = ti_startup, 459 .release = ti_release, 460 .port_probe = ti_port_probe, 461 .port_remove = ti_port_remove, 462 .open = ti_open, 463 .close = ti_close, 464 .write = ti_write, 465 .write_room = ti_write_room, 466 .chars_in_buffer = ti_chars_in_buffer, 467 .tx_empty = ti_tx_empty, 468 .throttle = ti_throttle, 469 .unthrottle = ti_unthrottle, 470 .get_serial = ti_get_serial_info, 471 .set_termios = ti_set_termios, 472 .tiocmget = ti_tiocmget, 473 .tiocmset = ti_tiocmset, 474 .tiocmiwait = usb_serial_generic_tiocmiwait, 475 .get_icount = usb_serial_generic_get_icount, 476 .break_ctl = ti_break, 477 .read_int_callback = ti_interrupt_callback, 478 .read_bulk_callback = ti_bulk_in_callback, 479 .write_bulk_callback = ti_bulk_out_callback, 480 }; 481 482 static struct usb_serial_driver * const serial_drivers[] = { 483 &ti_1port_device, &ti_2port_device, NULL 484 }; 485 486 MODULE_AUTHOR(TI_DRIVER_AUTHOR); 487 MODULE_DESCRIPTION(TI_DRIVER_DESC); 488 MODULE_LICENSE("GPL"); 489 490 MODULE_FIRMWARE("ti_3410.fw"); 491 MODULE_FIRMWARE("ti_5052.fw"); 492 MODULE_FIRMWARE("mts_cdma.fw"); 493 MODULE_FIRMWARE("mts_gsm.fw"); 494 MODULE_FIRMWARE("mts_edge.fw"); 495 MODULE_FIRMWARE("mts_mt9234mu.fw"); 496 MODULE_FIRMWARE("mts_mt9234zba.fw"); 497 MODULE_FIRMWARE("moxa/moxa-1110.fw"); 498 MODULE_FIRMWARE("moxa/moxa-1130.fw"); 499 MODULE_FIRMWARE("moxa/moxa-1131.fw"); 500 MODULE_FIRMWARE("moxa/moxa-1150.fw"); 501 MODULE_FIRMWARE("moxa/moxa-1151.fw"); 502 503 MODULE_DEVICE_TABLE(usb, ti_id_table_combined); 504 505 module_usb_serial_driver(serial_drivers, ti_id_table_combined); 506 507 static int ti_startup(struct usb_serial *serial) 508 { 509 struct ti_device *tdev; 510 struct usb_device *dev = serial->dev; 511 struct usb_host_interface *cur_altsetting; 512 int num_endpoints; 513 u16 vid, pid; 514 int status; 515 516 dev_dbg(&dev->dev, 517 "%s - product 0x%4X, num configurations %d, configuration value %d\n", 518 __func__, le16_to_cpu(dev->descriptor.idProduct), 519 dev->descriptor.bNumConfigurations, 520 dev->actconfig->desc.bConfigurationValue); 521 522 tdev = kzalloc(sizeof(struct ti_device), GFP_KERNEL); 523 if (!tdev) 524 return -ENOMEM; 525 526 mutex_init(&tdev->td_open_close_lock); 527 tdev->td_serial = serial; 528 usb_set_serial_data(serial, tdev); 529 530 /* determine device type */ 531 if (serial->type == &ti_1port_device) 532 tdev->td_is_3410 = 1; 533 dev_dbg(&dev->dev, "%s - device type is %s\n", __func__, 534 tdev->td_is_3410 ? "3410" : "5052"); 535 536 vid = le16_to_cpu(dev->descriptor.idVendor); 537 pid = le16_to_cpu(dev->descriptor.idProduct); 538 if (vid == MXU1_VENDOR_ID) { 539 switch (pid) { 540 case MXU1_1130_PRODUCT_ID: 541 case MXU1_1131_PRODUCT_ID: 542 tdev->td_rs485_only = true; 543 break; 544 } 545 } 546 547 cur_altsetting = serial->interface->cur_altsetting; 548 num_endpoints = cur_altsetting->desc.bNumEndpoints; 549 550 /* if we have only 1 configuration and 1 endpoint, download firmware */ 551 if (dev->descriptor.bNumConfigurations == 1 && num_endpoints == 1) { 552 status = ti_download_firmware(tdev); 553 554 if (status != 0) 555 goto free_tdev; 556 557 /* 3410 must be reset, 5052 resets itself */ 558 if (tdev->td_is_3410) { 559 msleep_interruptible(100); 560 usb_reset_device(dev); 561 } 562 563 status = -ENODEV; 564 goto free_tdev; 565 } 566 567 /* the second configuration must be set */ 568 if (dev->actconfig->desc.bConfigurationValue == TI_BOOT_CONFIG) { 569 status = usb_driver_set_configuration(dev, TI_ACTIVE_CONFIG); 570 status = status ? status : -ENODEV; 571 goto free_tdev; 572 } 573 574 if (serial->num_bulk_in < serial->num_ports || 575 serial->num_bulk_out < serial->num_ports) { 576 dev_err(&serial->interface->dev, "missing endpoints\n"); 577 status = -ENODEV; 578 goto free_tdev; 579 } 580 581 return 0; 582 583 free_tdev: 584 kfree(tdev); 585 usb_set_serial_data(serial, NULL); 586 return status; 587 } 588 589 590 static void ti_release(struct usb_serial *serial) 591 { 592 struct ti_device *tdev = usb_get_serial_data(serial); 593 594 kfree(tdev); 595 } 596 597 static int ti_port_probe(struct usb_serial_port *port) 598 { 599 struct ti_port *tport; 600 601 tport = kzalloc(sizeof(*tport), GFP_KERNEL); 602 if (!tport) 603 return -ENOMEM; 604 605 spin_lock_init(&tport->tp_lock); 606 if (port == port->serial->port[0]) 607 tport->tp_uart_base_addr = TI_UART1_BASE_ADDR; 608 else 609 tport->tp_uart_base_addr = TI_UART2_BASE_ADDR; 610 tport->tp_port = port; 611 tport->tp_tdev = usb_get_serial_data(port->serial); 612 613 if (tport->tp_tdev->td_rs485_only) 614 tport->tp_uart_mode = TI_UART_485_RECEIVER_DISABLED; 615 else 616 tport->tp_uart_mode = TI_UART_232; 617 618 usb_set_serial_port_data(port, tport); 619 620 /* 621 * The TUSB5052 LSR does not tell when the transmitter shift register 622 * has emptied so add a one-character drain delay. 623 */ 624 if (!tport->tp_tdev->td_is_3410) 625 port->port.drain_delay = 1; 626 627 return 0; 628 } 629 630 static void ti_port_remove(struct usb_serial_port *port) 631 { 632 struct ti_port *tport; 633 634 tport = usb_get_serial_port_data(port); 635 kfree(tport); 636 } 637 638 static int ti_open(struct tty_struct *tty, struct usb_serial_port *port) 639 { 640 struct ti_port *tport = usb_get_serial_port_data(port); 641 struct ti_device *tdev; 642 struct usb_device *dev; 643 struct urb *urb; 644 int status; 645 u16 open_settings; 646 647 open_settings = (TI_PIPE_MODE_CONTINUOUS | 648 TI_PIPE_TIMEOUT_ENABLE | 649 (TI_TRANSFER_TIMEOUT << 2)); 650 651 dev = port->serial->dev; 652 tdev = tport->tp_tdev; 653 654 /* only one open on any port on a device at a time */ 655 if (mutex_lock_interruptible(&tdev->td_open_close_lock)) 656 return -ERESTARTSYS; 657 658 tport->tp_msr = 0; 659 tport->tp_shadow_mcr |= (TI_MCR_RTS | TI_MCR_DTR); 660 661 /* start interrupt urb the first time a port is opened on this device */ 662 if (tdev->td_open_port_count == 0) { 663 dev_dbg(&port->dev, "%s - start interrupt in urb\n", __func__); 664 urb = tdev->td_serial->port[0]->interrupt_in_urb; 665 if (!urb) { 666 dev_err(&port->dev, "%s - no interrupt urb\n", __func__); 667 status = -EINVAL; 668 goto release_lock; 669 } 670 urb->context = tdev; 671 status = usb_submit_urb(urb, GFP_KERNEL); 672 if (status) { 673 dev_err(&port->dev, "%s - submit interrupt urb failed, %d\n", __func__, status); 674 goto release_lock; 675 } 676 } 677 678 if (tty) 679 ti_set_termios(tty, port, &tty->termios); 680 681 status = ti_port_cmd_out(port, TI_OPEN_PORT, open_settings, NULL, 0); 682 if (status) { 683 dev_err(&port->dev, "%s - cannot send open command, %d\n", 684 __func__, status); 685 goto unlink_int_urb; 686 } 687 688 status = ti_port_cmd_out(port, TI_START_PORT, 0, NULL, 0); 689 if (status) { 690 dev_err(&port->dev, "%s - cannot send start command, %d\n", 691 __func__, status); 692 goto unlink_int_urb; 693 } 694 695 status = ti_port_cmd_out(port, TI_PURGE_PORT, TI_PURGE_INPUT, NULL, 0); 696 if (status) { 697 dev_err(&port->dev, "%s - cannot clear input buffers, %d\n", 698 __func__, status); 699 goto unlink_int_urb; 700 } 701 status = ti_port_cmd_out(port, TI_PURGE_PORT, TI_PURGE_OUTPUT, NULL, 0); 702 if (status) { 703 dev_err(&port->dev, "%s - cannot clear output buffers, %d\n", 704 __func__, status); 705 goto unlink_int_urb; 706 } 707 708 /* reset the data toggle on the bulk endpoints to work around bug in 709 * host controllers where things get out of sync some times */ 710 usb_clear_halt(dev, port->write_urb->pipe); 711 usb_clear_halt(dev, port->read_urb->pipe); 712 713 if (tty) 714 ti_set_termios(tty, port, &tty->termios); 715 716 status = ti_port_cmd_out(port, TI_OPEN_PORT, open_settings, NULL, 0); 717 if (status) { 718 dev_err(&port->dev, "%s - cannot send open command (2), %d\n", 719 __func__, status); 720 goto unlink_int_urb; 721 } 722 723 status = ti_port_cmd_out(port, TI_START_PORT, 0, NULL, 0); 724 if (status) { 725 dev_err(&port->dev, "%s - cannot send start command (2), %d\n", 726 __func__, status); 727 goto unlink_int_urb; 728 } 729 730 /* start read urb */ 731 urb = port->read_urb; 732 tport->tp_read_urb_state = TI_READ_URB_RUNNING; 733 urb->context = tport; 734 status = usb_submit_urb(urb, GFP_KERNEL); 735 if (status) { 736 dev_err(&port->dev, "%s - submit read urb failed, %d\n", 737 __func__, status); 738 goto unlink_int_urb; 739 } 740 741 tport->tp_is_open = 1; 742 ++tdev->td_open_port_count; 743 744 goto release_lock; 745 746 unlink_int_urb: 747 if (tdev->td_open_port_count == 0) 748 usb_kill_urb(port->serial->port[0]->interrupt_in_urb); 749 release_lock: 750 mutex_unlock(&tdev->td_open_close_lock); 751 return status; 752 } 753 754 755 static void ti_close(struct usb_serial_port *port) 756 { 757 struct ti_device *tdev; 758 struct ti_port *tport; 759 int status; 760 unsigned long flags; 761 762 tdev = usb_get_serial_data(port->serial); 763 tport = usb_get_serial_port_data(port); 764 765 tport->tp_is_open = 0; 766 767 usb_kill_urb(port->read_urb); 768 usb_kill_urb(port->write_urb); 769 tport->tp_write_urb_in_use = 0; 770 spin_lock_irqsave(&tport->tp_lock, flags); 771 kfifo_reset_out(&port->write_fifo); 772 spin_unlock_irqrestore(&tport->tp_lock, flags); 773 774 status = ti_port_cmd_out(port, TI_CLOSE_PORT, 0, NULL, 0); 775 if (status) 776 dev_err(&port->dev, 777 "%s - cannot send close port command, %d\n" 778 , __func__, status); 779 780 mutex_lock(&tdev->td_open_close_lock); 781 --tdev->td_open_port_count; 782 if (tdev->td_open_port_count == 0) { 783 /* last port is closed, shut down interrupt urb */ 784 usb_kill_urb(port->serial->port[0]->interrupt_in_urb); 785 } 786 mutex_unlock(&tdev->td_open_close_lock); 787 } 788 789 790 static int ti_write(struct tty_struct *tty, struct usb_serial_port *port, 791 const unsigned char *data, int count) 792 { 793 struct ti_port *tport = usb_get_serial_port_data(port); 794 795 if (count == 0) { 796 return 0; 797 } 798 799 if (!tport->tp_is_open) 800 return -ENODEV; 801 802 count = kfifo_in_locked(&port->write_fifo, data, count, 803 &tport->tp_lock); 804 ti_send(tport); 805 806 return count; 807 } 808 809 810 static unsigned int ti_write_room(struct tty_struct *tty) 811 { 812 struct usb_serial_port *port = tty->driver_data; 813 struct ti_port *tport = usb_get_serial_port_data(port); 814 unsigned int room; 815 unsigned long flags; 816 817 spin_lock_irqsave(&tport->tp_lock, flags); 818 room = kfifo_avail(&port->write_fifo); 819 spin_unlock_irqrestore(&tport->tp_lock, flags); 820 821 dev_dbg(&port->dev, "%s - returns %u\n", __func__, room); 822 return room; 823 } 824 825 826 static unsigned int ti_chars_in_buffer(struct tty_struct *tty) 827 { 828 struct usb_serial_port *port = tty->driver_data; 829 struct ti_port *tport = usb_get_serial_port_data(port); 830 unsigned int chars; 831 unsigned long flags; 832 833 spin_lock_irqsave(&tport->tp_lock, flags); 834 chars = kfifo_len(&port->write_fifo); 835 spin_unlock_irqrestore(&tport->tp_lock, flags); 836 837 dev_dbg(&port->dev, "%s - returns %u\n", __func__, chars); 838 return chars; 839 } 840 841 static bool ti_tx_empty(struct usb_serial_port *port) 842 { 843 struct ti_port *tport = usb_get_serial_port_data(port); 844 u8 lsr, mask; 845 int ret; 846 847 /* 848 * TUSB5052 does not have the TEMT bit to tell if the shift register 849 * is empty. 850 */ 851 if (tport->tp_tdev->td_is_3410) 852 mask = TI_LSR_TX_EMPTY_BOTH; 853 else 854 mask = TI_LSR_TX_EMPTY; 855 856 ret = ti_get_lsr(tport, &lsr); 857 if (!ret && !(lsr & mask)) 858 return false; 859 860 return true; 861 } 862 863 static void ti_throttle(struct tty_struct *tty) 864 { 865 struct usb_serial_port *port = tty->driver_data; 866 struct ti_port *tport = usb_get_serial_port_data(port); 867 868 if (I_IXOFF(tty) || C_CRTSCTS(tty)) 869 ti_stop_read(tport, tty); 870 871 } 872 873 874 static void ti_unthrottle(struct tty_struct *tty) 875 { 876 struct usb_serial_port *port = tty->driver_data; 877 struct ti_port *tport = usb_get_serial_port_data(port); 878 int status; 879 880 if (I_IXOFF(tty) || C_CRTSCTS(tty)) { 881 status = ti_restart_read(tport, tty); 882 if (status) 883 dev_err(&port->dev, "%s - cannot restart read, %d\n", 884 __func__, status); 885 } 886 } 887 888 static void ti_set_termios(struct tty_struct *tty, 889 struct usb_serial_port *port, 890 const struct ktermios *old_termios) 891 { 892 struct ti_port *tport = usb_get_serial_port_data(port); 893 struct ti_uart_config *config; 894 int baud; 895 int status; 896 unsigned int mcr; 897 u16 wbaudrate; 898 u16 wflags = 0; 899 900 config = kmalloc(sizeof(*config), GFP_KERNEL); 901 if (!config) 902 return; 903 904 /* these flags must be set */ 905 wflags |= TI_UART_ENABLE_MS_INTS; 906 wflags |= TI_UART_ENABLE_AUTO_START_DMA; 907 config->bUartMode = tport->tp_uart_mode; 908 909 switch (C_CSIZE(tty)) { 910 case CS5: 911 config->bDataBits = TI_UART_5_DATA_BITS; 912 break; 913 case CS6: 914 config->bDataBits = TI_UART_6_DATA_BITS; 915 break; 916 case CS7: 917 config->bDataBits = TI_UART_7_DATA_BITS; 918 break; 919 default: 920 case CS8: 921 config->bDataBits = TI_UART_8_DATA_BITS; 922 break; 923 } 924 925 /* CMSPAR isn't supported by this driver */ 926 tty->termios.c_cflag &= ~CMSPAR; 927 928 if (C_PARENB(tty)) { 929 if (C_PARODD(tty)) { 930 wflags |= TI_UART_ENABLE_PARITY_CHECKING; 931 config->bParity = TI_UART_ODD_PARITY; 932 } else { 933 wflags |= TI_UART_ENABLE_PARITY_CHECKING; 934 config->bParity = TI_UART_EVEN_PARITY; 935 } 936 } else { 937 wflags &= ~TI_UART_ENABLE_PARITY_CHECKING; 938 config->bParity = TI_UART_NO_PARITY; 939 } 940 941 if (C_CSTOPB(tty)) 942 config->bStopBits = TI_UART_2_STOP_BITS; 943 else 944 config->bStopBits = TI_UART_1_STOP_BITS; 945 946 if (C_CRTSCTS(tty)) { 947 /* RTS flow control must be off to drop RTS for baud rate B0 */ 948 if ((C_BAUD(tty)) != B0) 949 wflags |= TI_UART_ENABLE_RTS_IN; 950 wflags |= TI_UART_ENABLE_CTS_OUT; 951 } else { 952 ti_restart_read(tport, tty); 953 } 954 955 if (I_IXOFF(tty) || I_IXON(tty)) { 956 config->cXon = START_CHAR(tty); 957 config->cXoff = STOP_CHAR(tty); 958 959 if (I_IXOFF(tty)) 960 wflags |= TI_UART_ENABLE_X_IN; 961 else 962 ti_restart_read(tport, tty); 963 964 if (I_IXON(tty)) 965 wflags |= TI_UART_ENABLE_X_OUT; 966 } 967 968 baud = tty_get_baud_rate(tty); 969 if (!baud) 970 baud = 9600; 971 if (tport->tp_tdev->td_is_3410) 972 wbaudrate = (923077 + baud/2) / baud; 973 else 974 wbaudrate = (461538 + baud/2) / baud; 975 976 /* FIXME: Should calculate resulting baud here and report it back */ 977 if ((C_BAUD(tty)) != B0) 978 tty_encode_baud_rate(tty, baud, baud); 979 980 dev_dbg(&port->dev, 981 "%s - BaudRate=%d, wBaudRate=%d, wFlags=0x%04X, bDataBits=%d, bParity=%d, bStopBits=%d, cXon=%d, cXoff=%d, bUartMode=%d\n", 982 __func__, baud, wbaudrate, wflags, 983 config->bDataBits, config->bParity, config->bStopBits, 984 config->cXon, config->cXoff, config->bUartMode); 985 986 config->wBaudRate = cpu_to_be16(wbaudrate); 987 config->wFlags = cpu_to_be16(wflags); 988 989 status = ti_port_cmd_out(port, TI_SET_CONFIG, 0, config, 990 sizeof(*config)); 991 if (status) 992 dev_err(&port->dev, "%s - cannot set config on port %d, %d\n", 993 __func__, port->port_number, status); 994 995 /* SET_CONFIG asserts RTS and DTR, reset them correctly */ 996 mcr = tport->tp_shadow_mcr; 997 /* if baud rate is B0, clear RTS and DTR */ 998 if (C_BAUD(tty) == B0) 999 mcr &= ~(TI_MCR_DTR | TI_MCR_RTS); 1000 status = ti_set_mcr(tport, mcr); 1001 if (status) 1002 dev_err(&port->dev, "%s - cannot set modem control on port %d, %d\n", 1003 __func__, port->port_number, status); 1004 1005 kfree(config); 1006 } 1007 1008 1009 static int ti_tiocmget(struct tty_struct *tty) 1010 { 1011 struct usb_serial_port *port = tty->driver_data; 1012 struct ti_port *tport = usb_get_serial_port_data(port); 1013 unsigned int result; 1014 unsigned int msr; 1015 unsigned int mcr; 1016 unsigned long flags; 1017 1018 spin_lock_irqsave(&tport->tp_lock, flags); 1019 msr = tport->tp_msr; 1020 mcr = tport->tp_shadow_mcr; 1021 spin_unlock_irqrestore(&tport->tp_lock, flags); 1022 1023 result = ((mcr & TI_MCR_DTR) ? TIOCM_DTR : 0) 1024 | ((mcr & TI_MCR_RTS) ? TIOCM_RTS : 0) 1025 | ((mcr & TI_MCR_LOOP) ? TIOCM_LOOP : 0) 1026 | ((msr & TI_MSR_CTS) ? TIOCM_CTS : 0) 1027 | ((msr & TI_MSR_CD) ? TIOCM_CAR : 0) 1028 | ((msr & TI_MSR_RI) ? TIOCM_RI : 0) 1029 | ((msr & TI_MSR_DSR) ? TIOCM_DSR : 0); 1030 1031 dev_dbg(&port->dev, "%s - 0x%04X\n", __func__, result); 1032 1033 return result; 1034 } 1035 1036 1037 static int ti_tiocmset(struct tty_struct *tty, 1038 unsigned int set, unsigned int clear) 1039 { 1040 struct usb_serial_port *port = tty->driver_data; 1041 struct ti_port *tport = usb_get_serial_port_data(port); 1042 unsigned int mcr; 1043 unsigned long flags; 1044 1045 spin_lock_irqsave(&tport->tp_lock, flags); 1046 mcr = tport->tp_shadow_mcr; 1047 1048 if (set & TIOCM_RTS) 1049 mcr |= TI_MCR_RTS; 1050 if (set & TIOCM_DTR) 1051 mcr |= TI_MCR_DTR; 1052 if (set & TIOCM_LOOP) 1053 mcr |= TI_MCR_LOOP; 1054 1055 if (clear & TIOCM_RTS) 1056 mcr &= ~TI_MCR_RTS; 1057 if (clear & TIOCM_DTR) 1058 mcr &= ~TI_MCR_DTR; 1059 if (clear & TIOCM_LOOP) 1060 mcr &= ~TI_MCR_LOOP; 1061 spin_unlock_irqrestore(&tport->tp_lock, flags); 1062 1063 return ti_set_mcr(tport, mcr); 1064 } 1065 1066 1067 static int ti_break(struct tty_struct *tty, int break_state) 1068 { 1069 struct usb_serial_port *port = tty->driver_data; 1070 struct ti_port *tport = usb_get_serial_port_data(port); 1071 int status; 1072 1073 dev_dbg(&port->dev, "%s - state = %d\n", __func__, break_state); 1074 1075 status = ti_write_byte(port, tport->tp_tdev, 1076 tport->tp_uart_base_addr + TI_UART_OFFSET_LCR, 1077 TI_LCR_BREAK, break_state == -1 ? TI_LCR_BREAK : 0); 1078 1079 if (status) { 1080 dev_dbg(&port->dev, "%s - error setting break, %d\n", __func__, status); 1081 return status; 1082 } 1083 1084 return 0; 1085 } 1086 1087 static int ti_get_port_from_code(unsigned char code) 1088 { 1089 return (code >> 6) & 0x01; 1090 } 1091 1092 static int ti_get_func_from_code(unsigned char code) 1093 { 1094 return code & 0x0f; 1095 } 1096 1097 static void ti_interrupt_callback(struct urb *urb) 1098 { 1099 struct ti_device *tdev = urb->context; 1100 struct usb_serial_port *port; 1101 struct usb_serial *serial = tdev->td_serial; 1102 struct ti_port *tport; 1103 struct device *dev = &urb->dev->dev; 1104 unsigned char *data = urb->transfer_buffer; 1105 int length = urb->actual_length; 1106 int port_number; 1107 int function; 1108 int status = urb->status; 1109 int retval; 1110 u8 msr; 1111 1112 switch (status) { 1113 case 0: 1114 break; 1115 case -ECONNRESET: 1116 case -ENOENT: 1117 case -ESHUTDOWN: 1118 dev_dbg(dev, "%s - urb shutting down, %d\n", __func__, status); 1119 return; 1120 default: 1121 dev_err(dev, "%s - nonzero urb status, %d\n", __func__, status); 1122 goto exit; 1123 } 1124 1125 if (length != 2) { 1126 dev_dbg(dev, "%s - bad packet size, %d\n", __func__, length); 1127 goto exit; 1128 } 1129 1130 if (data[0] == TI_CODE_HARDWARE_ERROR) { 1131 dev_err(dev, "%s - hardware error, %d\n", __func__, data[1]); 1132 goto exit; 1133 } 1134 1135 port_number = ti_get_port_from_code(data[0]); 1136 function = ti_get_func_from_code(data[0]); 1137 1138 dev_dbg(dev, "%s - port_number %d, function %d, data 0x%02X\n", 1139 __func__, port_number, function, data[1]); 1140 1141 if (port_number >= serial->num_ports) { 1142 dev_err(dev, "%s - bad port number, %d\n", 1143 __func__, port_number); 1144 goto exit; 1145 } 1146 1147 port = serial->port[port_number]; 1148 1149 tport = usb_get_serial_port_data(port); 1150 if (!tport) 1151 goto exit; 1152 1153 switch (function) { 1154 case TI_CODE_DATA_ERROR: 1155 dev_err(dev, "%s - DATA ERROR, port %d, data 0x%02X\n", 1156 __func__, port_number, data[1]); 1157 break; 1158 1159 case TI_CODE_MODEM_STATUS: 1160 msr = data[1]; 1161 dev_dbg(dev, "%s - port %d, msr 0x%02X\n", __func__, port_number, msr); 1162 ti_handle_new_msr(tport, msr); 1163 break; 1164 1165 default: 1166 dev_err(dev, "%s - unknown interrupt code, 0x%02X\n", 1167 __func__, data[1]); 1168 break; 1169 } 1170 1171 exit: 1172 retval = usb_submit_urb(urb, GFP_ATOMIC); 1173 if (retval) 1174 dev_err(dev, "%s - resubmit interrupt urb failed, %d\n", 1175 __func__, retval); 1176 } 1177 1178 1179 static void ti_bulk_in_callback(struct urb *urb) 1180 { 1181 struct ti_port *tport = urb->context; 1182 struct usb_serial_port *port = tport->tp_port; 1183 struct device *dev = &urb->dev->dev; 1184 int status = urb->status; 1185 unsigned long flags; 1186 int retval = 0; 1187 1188 switch (status) { 1189 case 0: 1190 break; 1191 case -ECONNRESET: 1192 case -ENOENT: 1193 case -ESHUTDOWN: 1194 dev_dbg(dev, "%s - urb shutting down, %d\n", __func__, status); 1195 return; 1196 default: 1197 dev_err(dev, "%s - nonzero urb status, %d\n", 1198 __func__, status); 1199 } 1200 1201 if (status == -EPIPE) 1202 goto exit; 1203 1204 if (status) { 1205 dev_err(dev, "%s - stopping read!\n", __func__); 1206 return; 1207 } 1208 1209 if (urb->actual_length) { 1210 usb_serial_debug_data(dev, __func__, urb->actual_length, 1211 urb->transfer_buffer); 1212 1213 if (!tport->tp_is_open) 1214 dev_dbg(dev, "%s - port closed, dropping data\n", 1215 __func__); 1216 else 1217 ti_recv(port, urb->transfer_buffer, urb->actual_length); 1218 spin_lock_irqsave(&tport->tp_lock, flags); 1219 port->icount.rx += urb->actual_length; 1220 spin_unlock_irqrestore(&tport->tp_lock, flags); 1221 } 1222 1223 exit: 1224 /* continue to read unless stopping */ 1225 spin_lock_irqsave(&tport->tp_lock, flags); 1226 if (tport->tp_read_urb_state == TI_READ_URB_RUNNING) 1227 retval = usb_submit_urb(urb, GFP_ATOMIC); 1228 else if (tport->tp_read_urb_state == TI_READ_URB_STOPPING) 1229 tport->tp_read_urb_state = TI_READ_URB_STOPPED; 1230 1231 spin_unlock_irqrestore(&tport->tp_lock, flags); 1232 if (retval) 1233 dev_err(dev, "%s - resubmit read urb failed, %d\n", 1234 __func__, retval); 1235 } 1236 1237 1238 static void ti_bulk_out_callback(struct urb *urb) 1239 { 1240 struct ti_port *tport = urb->context; 1241 struct usb_serial_port *port = tport->tp_port; 1242 int status = urb->status; 1243 1244 tport->tp_write_urb_in_use = 0; 1245 1246 switch (status) { 1247 case 0: 1248 break; 1249 case -ECONNRESET: 1250 case -ENOENT: 1251 case -ESHUTDOWN: 1252 dev_dbg(&port->dev, "%s - urb shutting down, %d\n", __func__, status); 1253 return; 1254 default: 1255 dev_err_console(port, "%s - nonzero urb status, %d\n", 1256 __func__, status); 1257 } 1258 1259 /* send any buffered data */ 1260 ti_send(tport); 1261 } 1262 1263 1264 static void ti_recv(struct usb_serial_port *port, unsigned char *data, 1265 int length) 1266 { 1267 int cnt; 1268 1269 do { 1270 cnt = tty_insert_flip_string(&port->port, data, length); 1271 if (cnt < length) { 1272 dev_err(&port->dev, "%s - dropping data, %d bytes lost\n", 1273 __func__, length - cnt); 1274 if (cnt == 0) 1275 break; 1276 } 1277 tty_flip_buffer_push(&port->port); 1278 data += cnt; 1279 length -= cnt; 1280 } while (length > 0); 1281 } 1282 1283 1284 static void ti_send(struct ti_port *tport) 1285 { 1286 int count, result; 1287 struct usb_serial_port *port = tport->tp_port; 1288 unsigned long flags; 1289 1290 spin_lock_irqsave(&tport->tp_lock, flags); 1291 1292 if (tport->tp_write_urb_in_use) 1293 goto unlock; 1294 1295 count = kfifo_out(&port->write_fifo, 1296 port->write_urb->transfer_buffer, 1297 port->bulk_out_size); 1298 1299 if (count == 0) 1300 goto unlock; 1301 1302 tport->tp_write_urb_in_use = 1; 1303 1304 spin_unlock_irqrestore(&tport->tp_lock, flags); 1305 1306 usb_serial_debug_data(&port->dev, __func__, count, 1307 port->write_urb->transfer_buffer); 1308 1309 usb_fill_bulk_urb(port->write_urb, port->serial->dev, 1310 usb_sndbulkpipe(port->serial->dev, 1311 port->bulk_out_endpointAddress), 1312 port->write_urb->transfer_buffer, count, 1313 ti_bulk_out_callback, tport); 1314 1315 result = usb_submit_urb(port->write_urb, GFP_ATOMIC); 1316 if (result) { 1317 dev_err_console(port, "%s - submit write urb failed, %d\n", 1318 __func__, result); 1319 tport->tp_write_urb_in_use = 0; 1320 /* TODO: reschedule ti_send */ 1321 } else { 1322 spin_lock_irqsave(&tport->tp_lock, flags); 1323 port->icount.tx += count; 1324 spin_unlock_irqrestore(&tport->tp_lock, flags); 1325 } 1326 1327 /* more room in the buffer for new writes, wakeup */ 1328 tty_port_tty_wakeup(&port->port); 1329 1330 return; 1331 unlock: 1332 spin_unlock_irqrestore(&tport->tp_lock, flags); 1333 return; 1334 } 1335 1336 1337 static int ti_set_mcr(struct ti_port *tport, unsigned int mcr) 1338 { 1339 unsigned long flags; 1340 int status; 1341 1342 status = ti_write_byte(tport->tp_port, tport->tp_tdev, 1343 tport->tp_uart_base_addr + TI_UART_OFFSET_MCR, 1344 TI_MCR_RTS | TI_MCR_DTR | TI_MCR_LOOP, mcr); 1345 1346 spin_lock_irqsave(&tport->tp_lock, flags); 1347 if (!status) 1348 tport->tp_shadow_mcr = mcr; 1349 spin_unlock_irqrestore(&tport->tp_lock, flags); 1350 1351 return status; 1352 } 1353 1354 1355 static int ti_get_lsr(struct ti_port *tport, u8 *lsr) 1356 { 1357 int size, status; 1358 struct usb_serial_port *port = tport->tp_port; 1359 struct ti_port_status *data; 1360 1361 size = sizeof(struct ti_port_status); 1362 data = kmalloc(size, GFP_KERNEL); 1363 if (!data) 1364 return -ENOMEM; 1365 1366 status = ti_port_cmd_in(port, TI_GET_PORT_STATUS, 0, data, size); 1367 if (status) { 1368 dev_err(&port->dev, 1369 "%s - get port status command failed, %d\n", 1370 __func__, status); 1371 goto free_data; 1372 } 1373 1374 dev_dbg(&port->dev, "%s - lsr 0x%02X\n", __func__, data->bLSR); 1375 1376 *lsr = data->bLSR; 1377 1378 free_data: 1379 kfree(data); 1380 return status; 1381 } 1382 1383 1384 static void ti_get_serial_info(struct tty_struct *tty, struct serial_struct *ss) 1385 { 1386 struct usb_serial_port *port = tty->driver_data; 1387 struct ti_port *tport = usb_get_serial_port_data(port); 1388 1389 ss->baud_base = tport->tp_tdev->td_is_3410 ? 921600 : 460800; 1390 } 1391 1392 1393 static void ti_handle_new_msr(struct ti_port *tport, u8 msr) 1394 { 1395 struct async_icount *icount; 1396 struct tty_struct *tty; 1397 unsigned long flags; 1398 1399 dev_dbg(&tport->tp_port->dev, "%s - msr 0x%02X\n", __func__, msr); 1400 1401 if (msr & TI_MSR_DELTA_MASK) { 1402 spin_lock_irqsave(&tport->tp_lock, flags); 1403 icount = &tport->tp_port->icount; 1404 if (msr & TI_MSR_DELTA_CTS) 1405 icount->cts++; 1406 if (msr & TI_MSR_DELTA_DSR) 1407 icount->dsr++; 1408 if (msr & TI_MSR_DELTA_CD) 1409 icount->dcd++; 1410 if (msr & TI_MSR_DELTA_RI) 1411 icount->rng++; 1412 wake_up_interruptible(&tport->tp_port->port.delta_msr_wait); 1413 spin_unlock_irqrestore(&tport->tp_lock, flags); 1414 } 1415 1416 tport->tp_msr = msr & TI_MSR_MASK; 1417 1418 /* handle CTS flow control */ 1419 tty = tty_port_tty_get(&tport->tp_port->port); 1420 if (tty && C_CRTSCTS(tty)) { 1421 if (msr & TI_MSR_CTS) 1422 tty_wakeup(tty); 1423 } 1424 tty_kref_put(tty); 1425 } 1426 1427 1428 static void ti_stop_read(struct ti_port *tport, struct tty_struct *tty) 1429 { 1430 unsigned long flags; 1431 1432 spin_lock_irqsave(&tport->tp_lock, flags); 1433 1434 if (tport->tp_read_urb_state == TI_READ_URB_RUNNING) 1435 tport->tp_read_urb_state = TI_READ_URB_STOPPING; 1436 1437 spin_unlock_irqrestore(&tport->tp_lock, flags); 1438 } 1439 1440 1441 static int ti_restart_read(struct ti_port *tport, struct tty_struct *tty) 1442 { 1443 struct urb *urb; 1444 int status = 0; 1445 unsigned long flags; 1446 1447 spin_lock_irqsave(&tport->tp_lock, flags); 1448 1449 if (tport->tp_read_urb_state == TI_READ_URB_STOPPED) { 1450 tport->tp_read_urb_state = TI_READ_URB_RUNNING; 1451 urb = tport->tp_port->read_urb; 1452 spin_unlock_irqrestore(&tport->tp_lock, flags); 1453 urb->context = tport; 1454 status = usb_submit_urb(urb, GFP_KERNEL); 1455 } else { 1456 tport->tp_read_urb_state = TI_READ_URB_RUNNING; 1457 spin_unlock_irqrestore(&tport->tp_lock, flags); 1458 } 1459 1460 return status; 1461 } 1462 1463 static int ti_command_out_sync(struct usb_device *udev, u8 command, 1464 u16 moduleid, u16 value, void *data, int size) 1465 { 1466 int status; 1467 1468 status = usb_control_msg(udev, usb_sndctrlpipe(udev, 0), command, 1469 USB_TYPE_VENDOR | USB_RECIP_DEVICE | USB_DIR_OUT, 1470 value, moduleid, data, size, 1000); 1471 if (status < 0) 1472 return status; 1473 1474 return 0; 1475 } 1476 1477 static int ti_command_in_sync(struct usb_device *udev, u8 command, 1478 u16 moduleid, u16 value, void *data, int size) 1479 { 1480 int status; 1481 1482 status = usb_control_msg(udev, usb_rcvctrlpipe(udev, 0), command, 1483 USB_TYPE_VENDOR | USB_RECIP_DEVICE | USB_DIR_IN, 1484 value, moduleid, data, size, 1000); 1485 if (status == size) 1486 status = 0; 1487 else if (status >= 0) 1488 status = -ECOMM; 1489 1490 return status; 1491 } 1492 1493 static int ti_port_cmd_out(struct usb_serial_port *port, u8 command, 1494 u16 value, void *data, int size) 1495 { 1496 return ti_command_out_sync(port->serial->dev, command, 1497 TI_UART1_PORT + port->port_number, 1498 value, data, size); 1499 } 1500 1501 static int ti_port_cmd_in(struct usb_serial_port *port, u8 command, 1502 u16 value, void *data, int size) 1503 { 1504 return ti_command_in_sync(port->serial->dev, command, 1505 TI_UART1_PORT + port->port_number, 1506 value, data, size); 1507 } 1508 1509 static int ti_write_byte(struct usb_serial_port *port, 1510 struct ti_device *tdev, unsigned long addr, 1511 u8 mask, u8 byte) 1512 { 1513 int status; 1514 unsigned int size; 1515 struct ti_write_data_bytes *data; 1516 1517 dev_dbg(&port->dev, "%s - addr 0x%08lX, mask 0x%02X, byte 0x%02X\n", __func__, 1518 addr, mask, byte); 1519 1520 size = sizeof(struct ti_write_data_bytes) + 2; 1521 data = kmalloc(size, GFP_KERNEL); 1522 if (!data) 1523 return -ENOMEM; 1524 1525 data->bAddrType = TI_RW_DATA_ADDR_XDATA; 1526 data->bDataType = TI_RW_DATA_BYTE; 1527 data->bDataCounter = 1; 1528 data->wBaseAddrHi = cpu_to_be16(addr>>16); 1529 data->wBaseAddrLo = cpu_to_be16(addr); 1530 data->bData[0] = mask; 1531 data->bData[1] = byte; 1532 1533 status = ti_command_out_sync(port->serial->dev, TI_WRITE_DATA, 1534 TI_RAM_PORT, 0, data, size); 1535 if (status < 0) 1536 dev_err(&port->dev, "%s - failed, %d\n", __func__, status); 1537 1538 kfree(data); 1539 1540 return status; 1541 } 1542 1543 static int ti_do_download(struct usb_device *dev, int pipe, 1544 u8 *buffer, int size) 1545 { 1546 int pos; 1547 u8 cs = 0; 1548 int done; 1549 struct ti_firmware_header *header; 1550 int status = 0; 1551 int len; 1552 1553 for (pos = sizeof(struct ti_firmware_header); pos < size; pos++) 1554 cs = (u8)(cs + buffer[pos]); 1555 1556 header = (struct ti_firmware_header *)buffer; 1557 header->wLength = cpu_to_le16(size - sizeof(*header)); 1558 header->bCheckSum = cs; 1559 1560 dev_dbg(&dev->dev, "%s - downloading firmware\n", __func__); 1561 for (pos = 0; pos < size; pos += done) { 1562 len = min(size - pos, TI_DOWNLOAD_MAX_PACKET_SIZE); 1563 status = usb_bulk_msg(dev, pipe, buffer + pos, len, 1564 &done, 1000); 1565 if (status) 1566 break; 1567 } 1568 return status; 1569 } 1570 1571 static int ti_download_firmware(struct ti_device *tdev) 1572 { 1573 int status; 1574 int buffer_size; 1575 u8 *buffer; 1576 struct usb_device *dev = tdev->td_serial->dev; 1577 unsigned int pipe = usb_sndbulkpipe(dev, 1578 tdev->td_serial->port[0]->bulk_out_endpointAddress); 1579 const struct firmware *fw_p; 1580 char buf[32]; 1581 1582 if (le16_to_cpu(dev->descriptor.idVendor) == MXU1_VENDOR_ID) { 1583 snprintf(buf, 1584 sizeof(buf), 1585 "moxa/moxa-%04x.fw", 1586 le16_to_cpu(dev->descriptor.idProduct)); 1587 1588 status = request_firmware(&fw_p, buf, &dev->dev); 1589 goto check_firmware; 1590 } 1591 1592 /* try ID specific firmware first, then try generic firmware */ 1593 sprintf(buf, "ti_usb-v%04x-p%04x.fw", 1594 le16_to_cpu(dev->descriptor.idVendor), 1595 le16_to_cpu(dev->descriptor.idProduct)); 1596 status = request_firmware(&fw_p, buf, &dev->dev); 1597 1598 if (status != 0) { 1599 buf[0] = '\0'; 1600 if (le16_to_cpu(dev->descriptor.idVendor) == MTS_VENDOR_ID) { 1601 switch (le16_to_cpu(dev->descriptor.idProduct)) { 1602 case MTS_CDMA_PRODUCT_ID: 1603 strcpy(buf, "mts_cdma.fw"); 1604 break; 1605 case MTS_GSM_PRODUCT_ID: 1606 strcpy(buf, "mts_gsm.fw"); 1607 break; 1608 case MTS_EDGE_PRODUCT_ID: 1609 strcpy(buf, "mts_edge.fw"); 1610 break; 1611 case MTS_MT9234MU_PRODUCT_ID: 1612 strcpy(buf, "mts_mt9234mu.fw"); 1613 break; 1614 case MTS_MT9234ZBA_PRODUCT_ID: 1615 strcpy(buf, "mts_mt9234zba.fw"); 1616 break; 1617 case MTS_MT9234ZBAOLD_PRODUCT_ID: 1618 strcpy(buf, "mts_mt9234zba.fw"); 1619 break; } 1620 } 1621 if (buf[0] == '\0') { 1622 if (tdev->td_is_3410) 1623 strcpy(buf, "ti_3410.fw"); 1624 else 1625 strcpy(buf, "ti_5052.fw"); 1626 } 1627 status = request_firmware(&fw_p, buf, &dev->dev); 1628 } 1629 1630 check_firmware: 1631 if (status) { 1632 dev_err(&dev->dev, "%s - firmware not found\n", __func__); 1633 return -ENOENT; 1634 } 1635 if (fw_p->size > TI_FIRMWARE_BUF_SIZE) { 1636 dev_err(&dev->dev, "%s - firmware too large %zu\n", __func__, fw_p->size); 1637 release_firmware(fw_p); 1638 return -ENOENT; 1639 } 1640 1641 buffer_size = TI_FIRMWARE_BUF_SIZE + sizeof(struct ti_firmware_header); 1642 buffer = kmalloc(buffer_size, GFP_KERNEL); 1643 if (buffer) { 1644 memcpy(buffer, fw_p->data, fw_p->size); 1645 memset(buffer + fw_p->size, 0xff, buffer_size - fw_p->size); 1646 status = ti_do_download(dev, pipe, buffer, fw_p->size); 1647 kfree(buffer); 1648 } else { 1649 status = -ENOMEM; 1650 } 1651 release_firmware(fw_p); 1652 if (status) { 1653 dev_err(&dev->dev, "%s - error downloading firmware, %d\n", 1654 __func__, status); 1655 return status; 1656 } 1657 1658 dev_dbg(&dev->dev, "%s - download successful\n", __func__); 1659 1660 return 0; 1661 } 1662