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 if (!urb) { 733 dev_err(&port->dev, "%s - no read urb\n", __func__); 734 status = -EINVAL; 735 goto unlink_int_urb; 736 } 737 tport->tp_read_urb_state = TI_READ_URB_RUNNING; 738 urb->context = tport; 739 status = usb_submit_urb(urb, GFP_KERNEL); 740 if (status) { 741 dev_err(&port->dev, "%s - submit read urb failed, %d\n", 742 __func__, status); 743 goto unlink_int_urb; 744 } 745 746 tport->tp_is_open = 1; 747 ++tdev->td_open_port_count; 748 749 goto release_lock; 750 751 unlink_int_urb: 752 if (tdev->td_open_port_count == 0) 753 usb_kill_urb(port->serial->port[0]->interrupt_in_urb); 754 release_lock: 755 mutex_unlock(&tdev->td_open_close_lock); 756 return status; 757 } 758 759 760 static void ti_close(struct usb_serial_port *port) 761 { 762 struct ti_device *tdev; 763 struct ti_port *tport; 764 int status; 765 unsigned long flags; 766 767 tdev = usb_get_serial_data(port->serial); 768 tport = usb_get_serial_port_data(port); 769 770 tport->tp_is_open = 0; 771 772 usb_kill_urb(port->read_urb); 773 usb_kill_urb(port->write_urb); 774 tport->tp_write_urb_in_use = 0; 775 spin_lock_irqsave(&tport->tp_lock, flags); 776 kfifo_reset_out(&port->write_fifo); 777 spin_unlock_irqrestore(&tport->tp_lock, flags); 778 779 status = ti_port_cmd_out(port, TI_CLOSE_PORT, 0, NULL, 0); 780 if (status) 781 dev_err(&port->dev, 782 "%s - cannot send close port command, %d\n" 783 , __func__, status); 784 785 mutex_lock(&tdev->td_open_close_lock); 786 --tdev->td_open_port_count; 787 if (tdev->td_open_port_count == 0) { 788 /* last port is closed, shut down interrupt urb */ 789 usb_kill_urb(port->serial->port[0]->interrupt_in_urb); 790 } 791 mutex_unlock(&tdev->td_open_close_lock); 792 } 793 794 795 static int ti_write(struct tty_struct *tty, struct usb_serial_port *port, 796 const unsigned char *data, int count) 797 { 798 struct ti_port *tport = usb_get_serial_port_data(port); 799 800 if (count == 0) { 801 return 0; 802 } 803 804 if (!tport->tp_is_open) 805 return -ENODEV; 806 807 count = kfifo_in_locked(&port->write_fifo, data, count, 808 &tport->tp_lock); 809 ti_send(tport); 810 811 return count; 812 } 813 814 815 static unsigned int ti_write_room(struct tty_struct *tty) 816 { 817 struct usb_serial_port *port = tty->driver_data; 818 struct ti_port *tport = usb_get_serial_port_data(port); 819 unsigned int room; 820 unsigned long flags; 821 822 spin_lock_irqsave(&tport->tp_lock, flags); 823 room = kfifo_avail(&port->write_fifo); 824 spin_unlock_irqrestore(&tport->tp_lock, flags); 825 826 dev_dbg(&port->dev, "%s - returns %u\n", __func__, room); 827 return room; 828 } 829 830 831 static unsigned int ti_chars_in_buffer(struct tty_struct *tty) 832 { 833 struct usb_serial_port *port = tty->driver_data; 834 struct ti_port *tport = usb_get_serial_port_data(port); 835 unsigned int chars; 836 unsigned long flags; 837 838 spin_lock_irqsave(&tport->tp_lock, flags); 839 chars = kfifo_len(&port->write_fifo); 840 spin_unlock_irqrestore(&tport->tp_lock, flags); 841 842 dev_dbg(&port->dev, "%s - returns %u\n", __func__, chars); 843 return chars; 844 } 845 846 static bool ti_tx_empty(struct usb_serial_port *port) 847 { 848 struct ti_port *tport = usb_get_serial_port_data(port); 849 u8 lsr, mask; 850 int ret; 851 852 /* 853 * TUSB5052 does not have the TEMT bit to tell if the shift register 854 * is empty. 855 */ 856 if (tport->tp_tdev->td_is_3410) 857 mask = TI_LSR_TX_EMPTY_BOTH; 858 else 859 mask = TI_LSR_TX_EMPTY; 860 861 ret = ti_get_lsr(tport, &lsr); 862 if (!ret && !(lsr & mask)) 863 return false; 864 865 return true; 866 } 867 868 static void ti_throttle(struct tty_struct *tty) 869 { 870 struct usb_serial_port *port = tty->driver_data; 871 struct ti_port *tport = usb_get_serial_port_data(port); 872 873 if (I_IXOFF(tty) || C_CRTSCTS(tty)) 874 ti_stop_read(tport, tty); 875 876 } 877 878 879 static void ti_unthrottle(struct tty_struct *tty) 880 { 881 struct usb_serial_port *port = tty->driver_data; 882 struct ti_port *tport = usb_get_serial_port_data(port); 883 int status; 884 885 if (I_IXOFF(tty) || C_CRTSCTS(tty)) { 886 status = ti_restart_read(tport, tty); 887 if (status) 888 dev_err(&port->dev, "%s - cannot restart read, %d\n", 889 __func__, status); 890 } 891 } 892 893 static void ti_set_termios(struct tty_struct *tty, 894 struct usb_serial_port *port, 895 const struct ktermios *old_termios) 896 { 897 struct ti_port *tport = usb_get_serial_port_data(port); 898 struct ti_uart_config *config; 899 int baud; 900 int status; 901 unsigned int mcr; 902 u16 wbaudrate; 903 u16 wflags = 0; 904 905 config = kmalloc(sizeof(*config), GFP_KERNEL); 906 if (!config) 907 return; 908 909 /* these flags must be set */ 910 wflags |= TI_UART_ENABLE_MS_INTS; 911 wflags |= TI_UART_ENABLE_AUTO_START_DMA; 912 config->bUartMode = tport->tp_uart_mode; 913 914 switch (C_CSIZE(tty)) { 915 case CS5: 916 config->bDataBits = TI_UART_5_DATA_BITS; 917 break; 918 case CS6: 919 config->bDataBits = TI_UART_6_DATA_BITS; 920 break; 921 case CS7: 922 config->bDataBits = TI_UART_7_DATA_BITS; 923 break; 924 default: 925 case CS8: 926 config->bDataBits = TI_UART_8_DATA_BITS; 927 break; 928 } 929 930 /* CMSPAR isn't supported by this driver */ 931 tty->termios.c_cflag &= ~CMSPAR; 932 933 if (C_PARENB(tty)) { 934 if (C_PARODD(tty)) { 935 wflags |= TI_UART_ENABLE_PARITY_CHECKING; 936 config->bParity = TI_UART_ODD_PARITY; 937 } else { 938 wflags |= TI_UART_ENABLE_PARITY_CHECKING; 939 config->bParity = TI_UART_EVEN_PARITY; 940 } 941 } else { 942 wflags &= ~TI_UART_ENABLE_PARITY_CHECKING; 943 config->bParity = TI_UART_NO_PARITY; 944 } 945 946 if (C_CSTOPB(tty)) 947 config->bStopBits = TI_UART_2_STOP_BITS; 948 else 949 config->bStopBits = TI_UART_1_STOP_BITS; 950 951 if (C_CRTSCTS(tty)) { 952 /* RTS flow control must be off to drop RTS for baud rate B0 */ 953 if ((C_BAUD(tty)) != B0) 954 wflags |= TI_UART_ENABLE_RTS_IN; 955 wflags |= TI_UART_ENABLE_CTS_OUT; 956 } else { 957 ti_restart_read(tport, tty); 958 } 959 960 if (I_IXOFF(tty) || I_IXON(tty)) { 961 config->cXon = START_CHAR(tty); 962 config->cXoff = STOP_CHAR(tty); 963 964 if (I_IXOFF(tty)) 965 wflags |= TI_UART_ENABLE_X_IN; 966 else 967 ti_restart_read(tport, tty); 968 969 if (I_IXON(tty)) 970 wflags |= TI_UART_ENABLE_X_OUT; 971 } 972 973 baud = tty_get_baud_rate(tty); 974 if (!baud) 975 baud = 9600; 976 if (tport->tp_tdev->td_is_3410) 977 wbaudrate = (923077 + baud/2) / baud; 978 else 979 wbaudrate = (461538 + baud/2) / baud; 980 981 /* FIXME: Should calculate resulting baud here and report it back */ 982 if ((C_BAUD(tty)) != B0) 983 tty_encode_baud_rate(tty, baud, baud); 984 985 dev_dbg(&port->dev, 986 "%s - BaudRate=%d, wBaudRate=%d, wFlags=0x%04X, bDataBits=%d, bParity=%d, bStopBits=%d, cXon=%d, cXoff=%d, bUartMode=%d\n", 987 __func__, baud, wbaudrate, wflags, 988 config->bDataBits, config->bParity, config->bStopBits, 989 config->cXon, config->cXoff, config->bUartMode); 990 991 config->wBaudRate = cpu_to_be16(wbaudrate); 992 config->wFlags = cpu_to_be16(wflags); 993 994 status = ti_port_cmd_out(port, TI_SET_CONFIG, 0, config, 995 sizeof(*config)); 996 if (status) 997 dev_err(&port->dev, "%s - cannot set config on port %d, %d\n", 998 __func__, port->port_number, status); 999 1000 /* SET_CONFIG asserts RTS and DTR, reset them correctly */ 1001 mcr = tport->tp_shadow_mcr; 1002 /* if baud rate is B0, clear RTS and DTR */ 1003 if (C_BAUD(tty) == B0) 1004 mcr &= ~(TI_MCR_DTR | TI_MCR_RTS); 1005 status = ti_set_mcr(tport, mcr); 1006 if (status) 1007 dev_err(&port->dev, "%s - cannot set modem control on port %d, %d\n", 1008 __func__, port->port_number, status); 1009 1010 kfree(config); 1011 } 1012 1013 1014 static int ti_tiocmget(struct tty_struct *tty) 1015 { 1016 struct usb_serial_port *port = tty->driver_data; 1017 struct ti_port *tport = usb_get_serial_port_data(port); 1018 unsigned int result; 1019 unsigned int msr; 1020 unsigned int mcr; 1021 unsigned long flags; 1022 1023 spin_lock_irqsave(&tport->tp_lock, flags); 1024 msr = tport->tp_msr; 1025 mcr = tport->tp_shadow_mcr; 1026 spin_unlock_irqrestore(&tport->tp_lock, flags); 1027 1028 result = ((mcr & TI_MCR_DTR) ? TIOCM_DTR : 0) 1029 | ((mcr & TI_MCR_RTS) ? TIOCM_RTS : 0) 1030 | ((mcr & TI_MCR_LOOP) ? TIOCM_LOOP : 0) 1031 | ((msr & TI_MSR_CTS) ? TIOCM_CTS : 0) 1032 | ((msr & TI_MSR_CD) ? TIOCM_CAR : 0) 1033 | ((msr & TI_MSR_RI) ? TIOCM_RI : 0) 1034 | ((msr & TI_MSR_DSR) ? TIOCM_DSR : 0); 1035 1036 dev_dbg(&port->dev, "%s - 0x%04X\n", __func__, result); 1037 1038 return result; 1039 } 1040 1041 1042 static int ti_tiocmset(struct tty_struct *tty, 1043 unsigned int set, unsigned int clear) 1044 { 1045 struct usb_serial_port *port = tty->driver_data; 1046 struct ti_port *tport = usb_get_serial_port_data(port); 1047 unsigned int mcr; 1048 unsigned long flags; 1049 1050 spin_lock_irqsave(&tport->tp_lock, flags); 1051 mcr = tport->tp_shadow_mcr; 1052 1053 if (set & TIOCM_RTS) 1054 mcr |= TI_MCR_RTS; 1055 if (set & TIOCM_DTR) 1056 mcr |= TI_MCR_DTR; 1057 if (set & TIOCM_LOOP) 1058 mcr |= TI_MCR_LOOP; 1059 1060 if (clear & TIOCM_RTS) 1061 mcr &= ~TI_MCR_RTS; 1062 if (clear & TIOCM_DTR) 1063 mcr &= ~TI_MCR_DTR; 1064 if (clear & TIOCM_LOOP) 1065 mcr &= ~TI_MCR_LOOP; 1066 spin_unlock_irqrestore(&tport->tp_lock, flags); 1067 1068 return ti_set_mcr(tport, mcr); 1069 } 1070 1071 1072 static int ti_break(struct tty_struct *tty, int break_state) 1073 { 1074 struct usb_serial_port *port = tty->driver_data; 1075 struct ti_port *tport = usb_get_serial_port_data(port); 1076 int status; 1077 1078 dev_dbg(&port->dev, "%s - state = %d\n", __func__, break_state); 1079 1080 status = ti_write_byte(port, tport->tp_tdev, 1081 tport->tp_uart_base_addr + TI_UART_OFFSET_LCR, 1082 TI_LCR_BREAK, break_state == -1 ? TI_LCR_BREAK : 0); 1083 1084 if (status) { 1085 dev_dbg(&port->dev, "%s - error setting break, %d\n", __func__, status); 1086 return status; 1087 } 1088 1089 return 0; 1090 } 1091 1092 static int ti_get_port_from_code(unsigned char code) 1093 { 1094 return (code >> 6) & 0x01; 1095 } 1096 1097 static int ti_get_func_from_code(unsigned char code) 1098 { 1099 return code & 0x0f; 1100 } 1101 1102 static void ti_interrupt_callback(struct urb *urb) 1103 { 1104 struct ti_device *tdev = urb->context; 1105 struct usb_serial_port *port; 1106 struct usb_serial *serial = tdev->td_serial; 1107 struct ti_port *tport; 1108 struct device *dev = &urb->dev->dev; 1109 unsigned char *data = urb->transfer_buffer; 1110 int length = urb->actual_length; 1111 int port_number; 1112 int function; 1113 int status = urb->status; 1114 int retval; 1115 u8 msr; 1116 1117 switch (status) { 1118 case 0: 1119 break; 1120 case -ECONNRESET: 1121 case -ENOENT: 1122 case -ESHUTDOWN: 1123 dev_dbg(dev, "%s - urb shutting down, %d\n", __func__, status); 1124 return; 1125 default: 1126 dev_err(dev, "%s - nonzero urb status, %d\n", __func__, status); 1127 goto exit; 1128 } 1129 1130 if (length != 2) { 1131 dev_dbg(dev, "%s - bad packet size, %d\n", __func__, length); 1132 goto exit; 1133 } 1134 1135 if (data[0] == TI_CODE_HARDWARE_ERROR) { 1136 dev_err(dev, "%s - hardware error, %d\n", __func__, data[1]); 1137 goto exit; 1138 } 1139 1140 port_number = ti_get_port_from_code(data[0]); 1141 function = ti_get_func_from_code(data[0]); 1142 1143 dev_dbg(dev, "%s - port_number %d, function %d, data 0x%02X\n", 1144 __func__, port_number, function, data[1]); 1145 1146 if (port_number >= serial->num_ports) { 1147 dev_err(dev, "%s - bad port number, %d\n", 1148 __func__, port_number); 1149 goto exit; 1150 } 1151 1152 port = serial->port[port_number]; 1153 1154 tport = usb_get_serial_port_data(port); 1155 if (!tport) 1156 goto exit; 1157 1158 switch (function) { 1159 case TI_CODE_DATA_ERROR: 1160 dev_err(dev, "%s - DATA ERROR, port %d, data 0x%02X\n", 1161 __func__, port_number, data[1]); 1162 break; 1163 1164 case TI_CODE_MODEM_STATUS: 1165 msr = data[1]; 1166 dev_dbg(dev, "%s - port %d, msr 0x%02X\n", __func__, port_number, msr); 1167 ti_handle_new_msr(tport, msr); 1168 break; 1169 1170 default: 1171 dev_err(dev, "%s - unknown interrupt code, 0x%02X\n", 1172 __func__, data[1]); 1173 break; 1174 } 1175 1176 exit: 1177 retval = usb_submit_urb(urb, GFP_ATOMIC); 1178 if (retval) 1179 dev_err(dev, "%s - resubmit interrupt urb failed, %d\n", 1180 __func__, retval); 1181 } 1182 1183 1184 static void ti_bulk_in_callback(struct urb *urb) 1185 { 1186 struct ti_port *tport = urb->context; 1187 struct usb_serial_port *port = tport->tp_port; 1188 struct device *dev = &urb->dev->dev; 1189 int status = urb->status; 1190 unsigned long flags; 1191 int retval = 0; 1192 1193 switch (status) { 1194 case 0: 1195 break; 1196 case -ECONNRESET: 1197 case -ENOENT: 1198 case -ESHUTDOWN: 1199 dev_dbg(dev, "%s - urb shutting down, %d\n", __func__, status); 1200 return; 1201 default: 1202 dev_err(dev, "%s - nonzero urb status, %d\n", 1203 __func__, status); 1204 } 1205 1206 if (status == -EPIPE) 1207 goto exit; 1208 1209 if (status) { 1210 dev_err(dev, "%s - stopping read!\n", __func__); 1211 return; 1212 } 1213 1214 if (urb->actual_length) { 1215 usb_serial_debug_data(dev, __func__, urb->actual_length, 1216 urb->transfer_buffer); 1217 1218 if (!tport->tp_is_open) 1219 dev_dbg(dev, "%s - port closed, dropping data\n", 1220 __func__); 1221 else 1222 ti_recv(port, urb->transfer_buffer, urb->actual_length); 1223 spin_lock_irqsave(&tport->tp_lock, flags); 1224 port->icount.rx += urb->actual_length; 1225 spin_unlock_irqrestore(&tport->tp_lock, flags); 1226 } 1227 1228 exit: 1229 /* continue to read unless stopping */ 1230 spin_lock_irqsave(&tport->tp_lock, flags); 1231 if (tport->tp_read_urb_state == TI_READ_URB_RUNNING) 1232 retval = usb_submit_urb(urb, GFP_ATOMIC); 1233 else if (tport->tp_read_urb_state == TI_READ_URB_STOPPING) 1234 tport->tp_read_urb_state = TI_READ_URB_STOPPED; 1235 1236 spin_unlock_irqrestore(&tport->tp_lock, flags); 1237 if (retval) 1238 dev_err(dev, "%s - resubmit read urb failed, %d\n", 1239 __func__, retval); 1240 } 1241 1242 1243 static void ti_bulk_out_callback(struct urb *urb) 1244 { 1245 struct ti_port *tport = urb->context; 1246 struct usb_serial_port *port = tport->tp_port; 1247 int status = urb->status; 1248 1249 tport->tp_write_urb_in_use = 0; 1250 1251 switch (status) { 1252 case 0: 1253 break; 1254 case -ECONNRESET: 1255 case -ENOENT: 1256 case -ESHUTDOWN: 1257 dev_dbg(&port->dev, "%s - urb shutting down, %d\n", __func__, status); 1258 return; 1259 default: 1260 dev_err_console(port, "%s - nonzero urb status, %d\n", 1261 __func__, status); 1262 } 1263 1264 /* send any buffered data */ 1265 ti_send(tport); 1266 } 1267 1268 1269 static void ti_recv(struct usb_serial_port *port, unsigned char *data, 1270 int length) 1271 { 1272 int cnt; 1273 1274 do { 1275 cnt = tty_insert_flip_string(&port->port, data, length); 1276 if (cnt < length) { 1277 dev_err(&port->dev, "%s - dropping data, %d bytes lost\n", 1278 __func__, length - cnt); 1279 if (cnt == 0) 1280 break; 1281 } 1282 tty_flip_buffer_push(&port->port); 1283 data += cnt; 1284 length -= cnt; 1285 } while (length > 0); 1286 } 1287 1288 1289 static void ti_send(struct ti_port *tport) 1290 { 1291 int count, result; 1292 struct usb_serial_port *port = tport->tp_port; 1293 unsigned long flags; 1294 1295 spin_lock_irqsave(&tport->tp_lock, flags); 1296 1297 if (tport->tp_write_urb_in_use) 1298 goto unlock; 1299 1300 count = kfifo_out(&port->write_fifo, 1301 port->write_urb->transfer_buffer, 1302 port->bulk_out_size); 1303 1304 if (count == 0) 1305 goto unlock; 1306 1307 tport->tp_write_urb_in_use = 1; 1308 1309 spin_unlock_irqrestore(&tport->tp_lock, flags); 1310 1311 usb_serial_debug_data(&port->dev, __func__, count, 1312 port->write_urb->transfer_buffer); 1313 1314 usb_fill_bulk_urb(port->write_urb, port->serial->dev, 1315 usb_sndbulkpipe(port->serial->dev, 1316 port->bulk_out_endpointAddress), 1317 port->write_urb->transfer_buffer, count, 1318 ti_bulk_out_callback, tport); 1319 1320 result = usb_submit_urb(port->write_urb, GFP_ATOMIC); 1321 if (result) { 1322 dev_err_console(port, "%s - submit write urb failed, %d\n", 1323 __func__, result); 1324 tport->tp_write_urb_in_use = 0; 1325 /* TODO: reschedule ti_send */ 1326 } else { 1327 spin_lock_irqsave(&tport->tp_lock, flags); 1328 port->icount.tx += count; 1329 spin_unlock_irqrestore(&tport->tp_lock, flags); 1330 } 1331 1332 /* more room in the buffer for new writes, wakeup */ 1333 tty_port_tty_wakeup(&port->port); 1334 1335 return; 1336 unlock: 1337 spin_unlock_irqrestore(&tport->tp_lock, flags); 1338 return; 1339 } 1340 1341 1342 static int ti_set_mcr(struct ti_port *tport, unsigned int mcr) 1343 { 1344 unsigned long flags; 1345 int status; 1346 1347 status = ti_write_byte(tport->tp_port, tport->tp_tdev, 1348 tport->tp_uart_base_addr + TI_UART_OFFSET_MCR, 1349 TI_MCR_RTS | TI_MCR_DTR | TI_MCR_LOOP, mcr); 1350 1351 spin_lock_irqsave(&tport->tp_lock, flags); 1352 if (!status) 1353 tport->tp_shadow_mcr = mcr; 1354 spin_unlock_irqrestore(&tport->tp_lock, flags); 1355 1356 return status; 1357 } 1358 1359 1360 static int ti_get_lsr(struct ti_port *tport, u8 *lsr) 1361 { 1362 int size, status; 1363 struct usb_serial_port *port = tport->tp_port; 1364 struct ti_port_status *data; 1365 1366 size = sizeof(struct ti_port_status); 1367 data = kmalloc(size, GFP_KERNEL); 1368 if (!data) 1369 return -ENOMEM; 1370 1371 status = ti_port_cmd_in(port, TI_GET_PORT_STATUS, 0, data, size); 1372 if (status) { 1373 dev_err(&port->dev, 1374 "%s - get port status command failed, %d\n", 1375 __func__, status); 1376 goto free_data; 1377 } 1378 1379 dev_dbg(&port->dev, "%s - lsr 0x%02X\n", __func__, data->bLSR); 1380 1381 *lsr = data->bLSR; 1382 1383 free_data: 1384 kfree(data); 1385 return status; 1386 } 1387 1388 1389 static void ti_get_serial_info(struct tty_struct *tty, struct serial_struct *ss) 1390 { 1391 struct usb_serial_port *port = tty->driver_data; 1392 struct ti_port *tport = usb_get_serial_port_data(port); 1393 1394 ss->baud_base = tport->tp_tdev->td_is_3410 ? 921600 : 460800; 1395 } 1396 1397 1398 static void ti_handle_new_msr(struct ti_port *tport, u8 msr) 1399 { 1400 struct async_icount *icount; 1401 struct tty_struct *tty; 1402 unsigned long flags; 1403 1404 dev_dbg(&tport->tp_port->dev, "%s - msr 0x%02X\n", __func__, msr); 1405 1406 if (msr & TI_MSR_DELTA_MASK) { 1407 spin_lock_irqsave(&tport->tp_lock, flags); 1408 icount = &tport->tp_port->icount; 1409 if (msr & TI_MSR_DELTA_CTS) 1410 icount->cts++; 1411 if (msr & TI_MSR_DELTA_DSR) 1412 icount->dsr++; 1413 if (msr & TI_MSR_DELTA_CD) 1414 icount->dcd++; 1415 if (msr & TI_MSR_DELTA_RI) 1416 icount->rng++; 1417 wake_up_interruptible(&tport->tp_port->port.delta_msr_wait); 1418 spin_unlock_irqrestore(&tport->tp_lock, flags); 1419 } 1420 1421 tport->tp_msr = msr & TI_MSR_MASK; 1422 1423 /* handle CTS flow control */ 1424 tty = tty_port_tty_get(&tport->tp_port->port); 1425 if (tty && C_CRTSCTS(tty)) { 1426 if (msr & TI_MSR_CTS) 1427 tty_wakeup(tty); 1428 } 1429 tty_kref_put(tty); 1430 } 1431 1432 1433 static void ti_stop_read(struct ti_port *tport, struct tty_struct *tty) 1434 { 1435 unsigned long flags; 1436 1437 spin_lock_irqsave(&tport->tp_lock, flags); 1438 1439 if (tport->tp_read_urb_state == TI_READ_URB_RUNNING) 1440 tport->tp_read_urb_state = TI_READ_URB_STOPPING; 1441 1442 spin_unlock_irqrestore(&tport->tp_lock, flags); 1443 } 1444 1445 1446 static int ti_restart_read(struct ti_port *tport, struct tty_struct *tty) 1447 { 1448 struct urb *urb; 1449 int status = 0; 1450 unsigned long flags; 1451 1452 spin_lock_irqsave(&tport->tp_lock, flags); 1453 1454 if (tport->tp_read_urb_state == TI_READ_URB_STOPPED) { 1455 tport->tp_read_urb_state = TI_READ_URB_RUNNING; 1456 urb = tport->tp_port->read_urb; 1457 spin_unlock_irqrestore(&tport->tp_lock, flags); 1458 urb->context = tport; 1459 status = usb_submit_urb(urb, GFP_KERNEL); 1460 } else { 1461 tport->tp_read_urb_state = TI_READ_URB_RUNNING; 1462 spin_unlock_irqrestore(&tport->tp_lock, flags); 1463 } 1464 1465 return status; 1466 } 1467 1468 static int ti_command_out_sync(struct usb_device *udev, u8 command, 1469 u16 moduleid, u16 value, void *data, int size) 1470 { 1471 int status; 1472 1473 status = usb_control_msg(udev, usb_sndctrlpipe(udev, 0), command, 1474 USB_TYPE_VENDOR | USB_RECIP_DEVICE | USB_DIR_OUT, 1475 value, moduleid, data, size, 1000); 1476 if (status < 0) 1477 return status; 1478 1479 return 0; 1480 } 1481 1482 static int ti_command_in_sync(struct usb_device *udev, u8 command, 1483 u16 moduleid, u16 value, void *data, int size) 1484 { 1485 int status; 1486 1487 status = usb_control_msg(udev, usb_rcvctrlpipe(udev, 0), command, 1488 USB_TYPE_VENDOR | USB_RECIP_DEVICE | USB_DIR_IN, 1489 value, moduleid, data, size, 1000); 1490 if (status == size) 1491 status = 0; 1492 else if (status >= 0) 1493 status = -ECOMM; 1494 1495 return status; 1496 } 1497 1498 static int ti_port_cmd_out(struct usb_serial_port *port, u8 command, 1499 u16 value, void *data, int size) 1500 { 1501 return ti_command_out_sync(port->serial->dev, command, 1502 TI_UART1_PORT + port->port_number, 1503 value, data, size); 1504 } 1505 1506 static int ti_port_cmd_in(struct usb_serial_port *port, u8 command, 1507 u16 value, void *data, int size) 1508 { 1509 return ti_command_in_sync(port->serial->dev, command, 1510 TI_UART1_PORT + port->port_number, 1511 value, data, size); 1512 } 1513 1514 static int ti_write_byte(struct usb_serial_port *port, 1515 struct ti_device *tdev, unsigned long addr, 1516 u8 mask, u8 byte) 1517 { 1518 int status; 1519 unsigned int size; 1520 struct ti_write_data_bytes *data; 1521 1522 dev_dbg(&port->dev, "%s - addr 0x%08lX, mask 0x%02X, byte 0x%02X\n", __func__, 1523 addr, mask, byte); 1524 1525 size = sizeof(struct ti_write_data_bytes) + 2; 1526 data = kmalloc(size, GFP_KERNEL); 1527 if (!data) 1528 return -ENOMEM; 1529 1530 data->bAddrType = TI_RW_DATA_ADDR_XDATA; 1531 data->bDataType = TI_RW_DATA_BYTE; 1532 data->bDataCounter = 1; 1533 data->wBaseAddrHi = cpu_to_be16(addr>>16); 1534 data->wBaseAddrLo = cpu_to_be16(addr); 1535 data->bData[0] = mask; 1536 data->bData[1] = byte; 1537 1538 status = ti_command_out_sync(port->serial->dev, TI_WRITE_DATA, 1539 TI_RAM_PORT, 0, data, size); 1540 if (status < 0) 1541 dev_err(&port->dev, "%s - failed, %d\n", __func__, status); 1542 1543 kfree(data); 1544 1545 return status; 1546 } 1547 1548 static int ti_do_download(struct usb_device *dev, int pipe, 1549 u8 *buffer, int size) 1550 { 1551 int pos; 1552 u8 cs = 0; 1553 int done; 1554 struct ti_firmware_header *header; 1555 int status = 0; 1556 int len; 1557 1558 for (pos = sizeof(struct ti_firmware_header); pos < size; pos++) 1559 cs = (u8)(cs + buffer[pos]); 1560 1561 header = (struct ti_firmware_header *)buffer; 1562 header->wLength = cpu_to_le16(size - sizeof(*header)); 1563 header->bCheckSum = cs; 1564 1565 dev_dbg(&dev->dev, "%s - downloading firmware\n", __func__); 1566 for (pos = 0; pos < size; pos += done) { 1567 len = min(size - pos, TI_DOWNLOAD_MAX_PACKET_SIZE); 1568 status = usb_bulk_msg(dev, pipe, buffer + pos, len, 1569 &done, 1000); 1570 if (status) 1571 break; 1572 } 1573 return status; 1574 } 1575 1576 static int ti_download_firmware(struct ti_device *tdev) 1577 { 1578 int status; 1579 int buffer_size; 1580 u8 *buffer; 1581 struct usb_device *dev = tdev->td_serial->dev; 1582 unsigned int pipe = usb_sndbulkpipe(dev, 1583 tdev->td_serial->port[0]->bulk_out_endpointAddress); 1584 const struct firmware *fw_p; 1585 char buf[32]; 1586 1587 if (le16_to_cpu(dev->descriptor.idVendor) == MXU1_VENDOR_ID) { 1588 snprintf(buf, 1589 sizeof(buf), 1590 "moxa/moxa-%04x.fw", 1591 le16_to_cpu(dev->descriptor.idProduct)); 1592 1593 status = request_firmware(&fw_p, buf, &dev->dev); 1594 goto check_firmware; 1595 } 1596 1597 /* try ID specific firmware first, then try generic firmware */ 1598 sprintf(buf, "ti_usb-v%04x-p%04x.fw", 1599 le16_to_cpu(dev->descriptor.idVendor), 1600 le16_to_cpu(dev->descriptor.idProduct)); 1601 status = request_firmware(&fw_p, buf, &dev->dev); 1602 1603 if (status != 0) { 1604 buf[0] = '\0'; 1605 if (le16_to_cpu(dev->descriptor.idVendor) == MTS_VENDOR_ID) { 1606 switch (le16_to_cpu(dev->descriptor.idProduct)) { 1607 case MTS_CDMA_PRODUCT_ID: 1608 strcpy(buf, "mts_cdma.fw"); 1609 break; 1610 case MTS_GSM_PRODUCT_ID: 1611 strcpy(buf, "mts_gsm.fw"); 1612 break; 1613 case MTS_EDGE_PRODUCT_ID: 1614 strcpy(buf, "mts_edge.fw"); 1615 break; 1616 case MTS_MT9234MU_PRODUCT_ID: 1617 strcpy(buf, "mts_mt9234mu.fw"); 1618 break; 1619 case MTS_MT9234ZBA_PRODUCT_ID: 1620 strcpy(buf, "mts_mt9234zba.fw"); 1621 break; 1622 case MTS_MT9234ZBAOLD_PRODUCT_ID: 1623 strcpy(buf, "mts_mt9234zba.fw"); 1624 break; } 1625 } 1626 if (buf[0] == '\0') { 1627 if (tdev->td_is_3410) 1628 strcpy(buf, "ti_3410.fw"); 1629 else 1630 strcpy(buf, "ti_5052.fw"); 1631 } 1632 status = request_firmware(&fw_p, buf, &dev->dev); 1633 } 1634 1635 check_firmware: 1636 if (status) { 1637 dev_err(&dev->dev, "%s - firmware not found\n", __func__); 1638 return -ENOENT; 1639 } 1640 if (fw_p->size > TI_FIRMWARE_BUF_SIZE) { 1641 dev_err(&dev->dev, "%s - firmware too large %zu\n", __func__, fw_p->size); 1642 release_firmware(fw_p); 1643 return -ENOENT; 1644 } 1645 1646 buffer_size = TI_FIRMWARE_BUF_SIZE + sizeof(struct ti_firmware_header); 1647 buffer = kmalloc(buffer_size, GFP_KERNEL); 1648 if (buffer) { 1649 memcpy(buffer, fw_p->data, fw_p->size); 1650 memset(buffer + fw_p->size, 0xff, buffer_size - fw_p->size); 1651 status = ti_do_download(dev, pipe, buffer, fw_p->size); 1652 kfree(buffer); 1653 } else { 1654 status = -ENOMEM; 1655 } 1656 release_firmware(fw_p); 1657 if (status) { 1658 dev_err(&dev->dev, "%s - error downloading firmware, %d\n", 1659 __func__, status); 1660 return status; 1661 } 1662 1663 dev_dbg(&dev->dev, "%s - download successful\n", __func__); 1664 1665 return 0; 1666 } 1667