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, struct ktermios *old_termios); 318 static int ti_tiocmget(struct tty_struct *tty); 319 static int ti_tiocmset(struct tty_struct *tty, 320 unsigned int set, unsigned int clear); 321 static void ti_break(struct tty_struct *tty, int break_state); 322 static void ti_interrupt_callback(struct urb *urb); 323 static void ti_bulk_in_callback(struct urb *urb); 324 static void ti_bulk_out_callback(struct urb *urb); 325 326 static void ti_recv(struct usb_serial_port *port, unsigned char *data, 327 int length); 328 static void ti_send(struct ti_port *tport); 329 static int ti_set_mcr(struct ti_port *tport, unsigned int mcr); 330 static int ti_get_lsr(struct ti_port *tport, u8 *lsr); 331 static void ti_get_serial_info(struct tty_struct *tty, struct serial_struct *ss); 332 static void ti_handle_new_msr(struct ti_port *tport, u8 msr); 333 334 static void ti_stop_read(struct ti_port *tport, struct tty_struct *tty); 335 static int ti_restart_read(struct ti_port *tport, struct tty_struct *tty); 336 337 static int ti_command_out_sync(struct usb_device *udev, u8 command, 338 u16 moduleid, u16 value, void *data, int size); 339 static int ti_command_in_sync(struct usb_device *udev, u8 command, 340 u16 moduleid, u16 value, void *data, int size); 341 static int ti_port_cmd_out(struct usb_serial_port *port, u8 command, 342 u16 value, void *data, int size); 343 static int ti_port_cmd_in(struct usb_serial_port *port, u8 command, 344 u16 value, void *data, int size); 345 346 static int ti_write_byte(struct usb_serial_port *port, struct ti_device *tdev, 347 unsigned long addr, u8 mask, u8 byte); 348 349 static int ti_download_firmware(struct ti_device *tdev); 350 351 static const struct usb_device_id ti_id_table_3410[] = { 352 { USB_DEVICE(TI_VENDOR_ID, TI_3410_PRODUCT_ID) }, 353 { USB_DEVICE(TI_VENDOR_ID, TI_3410_EZ430_ID) }, 354 { USB_DEVICE(MTS_VENDOR_ID, MTS_GSM_NO_FW_PRODUCT_ID) }, 355 { USB_DEVICE(MTS_VENDOR_ID, MTS_CDMA_NO_FW_PRODUCT_ID) }, 356 { USB_DEVICE(MTS_VENDOR_ID, MTS_CDMA_PRODUCT_ID) }, 357 { USB_DEVICE(MTS_VENDOR_ID, MTS_GSM_PRODUCT_ID) }, 358 { USB_DEVICE(MTS_VENDOR_ID, MTS_EDGE_PRODUCT_ID) }, 359 { USB_DEVICE(MTS_VENDOR_ID, MTS_MT9234MU_PRODUCT_ID) }, 360 { USB_DEVICE(MTS_VENDOR_ID, MTS_MT9234ZBA_PRODUCT_ID) }, 361 { USB_DEVICE(MTS_VENDOR_ID, MTS_MT9234ZBAOLD_PRODUCT_ID) }, 362 { USB_DEVICE(IBM_VENDOR_ID, IBM_4543_PRODUCT_ID) }, 363 { USB_DEVICE(IBM_VENDOR_ID, IBM_454B_PRODUCT_ID) }, 364 { USB_DEVICE(IBM_VENDOR_ID, IBM_454C_PRODUCT_ID) }, 365 { USB_DEVICE(ABBOTT_VENDOR_ID, ABBOTT_STEREO_PLUG_ID) }, 366 { USB_DEVICE(ABBOTT_VENDOR_ID, ABBOTT_STRIP_PORT_ID) }, 367 { USB_DEVICE(TI_VENDOR_ID, FRI2_PRODUCT_ID) }, 368 { USB_DEVICE(HONEYWELL_VENDOR_ID, HONEYWELL_HGI80_PRODUCT_ID) }, 369 { USB_DEVICE(MXU1_VENDOR_ID, MXU1_1110_PRODUCT_ID) }, 370 { USB_DEVICE(MXU1_VENDOR_ID, MXU1_1130_PRODUCT_ID) }, 371 { USB_DEVICE(MXU1_VENDOR_ID, MXU1_1131_PRODUCT_ID) }, 372 { USB_DEVICE(MXU1_VENDOR_ID, MXU1_1150_PRODUCT_ID) }, 373 { USB_DEVICE(MXU1_VENDOR_ID, MXU1_1151_PRODUCT_ID) }, 374 { USB_DEVICE(STARTECH_VENDOR_ID, TI_3410_PRODUCT_ID) }, 375 { } /* terminator */ 376 }; 377 378 static const struct usb_device_id ti_id_table_5052[] = { 379 { USB_DEVICE(TI_VENDOR_ID, TI_5052_BOOT_PRODUCT_ID) }, 380 { USB_DEVICE(TI_VENDOR_ID, TI_5152_BOOT_PRODUCT_ID) }, 381 { USB_DEVICE(TI_VENDOR_ID, TI_5052_EEPROM_PRODUCT_ID) }, 382 { USB_DEVICE(TI_VENDOR_ID, TI_5052_FIRMWARE_PRODUCT_ID) }, 383 { } 384 }; 385 386 static const struct usb_device_id ti_id_table_combined[] = { 387 { USB_DEVICE(TI_VENDOR_ID, TI_3410_PRODUCT_ID) }, 388 { USB_DEVICE(TI_VENDOR_ID, TI_3410_EZ430_ID) }, 389 { USB_DEVICE(MTS_VENDOR_ID, MTS_GSM_NO_FW_PRODUCT_ID) }, 390 { USB_DEVICE(MTS_VENDOR_ID, MTS_CDMA_NO_FW_PRODUCT_ID) }, 391 { USB_DEVICE(MTS_VENDOR_ID, MTS_CDMA_PRODUCT_ID) }, 392 { USB_DEVICE(MTS_VENDOR_ID, MTS_GSM_PRODUCT_ID) }, 393 { USB_DEVICE(MTS_VENDOR_ID, MTS_EDGE_PRODUCT_ID) }, 394 { USB_DEVICE(MTS_VENDOR_ID, MTS_MT9234MU_PRODUCT_ID) }, 395 { USB_DEVICE(MTS_VENDOR_ID, MTS_MT9234ZBA_PRODUCT_ID) }, 396 { USB_DEVICE(MTS_VENDOR_ID, MTS_MT9234ZBAOLD_PRODUCT_ID) }, 397 { USB_DEVICE(TI_VENDOR_ID, TI_5052_BOOT_PRODUCT_ID) }, 398 { USB_DEVICE(TI_VENDOR_ID, TI_5152_BOOT_PRODUCT_ID) }, 399 { USB_DEVICE(TI_VENDOR_ID, TI_5052_EEPROM_PRODUCT_ID) }, 400 { USB_DEVICE(TI_VENDOR_ID, TI_5052_FIRMWARE_PRODUCT_ID) }, 401 { USB_DEVICE(IBM_VENDOR_ID, IBM_4543_PRODUCT_ID) }, 402 { USB_DEVICE(IBM_VENDOR_ID, IBM_454B_PRODUCT_ID) }, 403 { USB_DEVICE(IBM_VENDOR_ID, IBM_454C_PRODUCT_ID) }, 404 { USB_DEVICE(ABBOTT_VENDOR_ID, ABBOTT_PRODUCT_ID) }, 405 { USB_DEVICE(ABBOTT_VENDOR_ID, ABBOTT_STRIP_PORT_ID) }, 406 { USB_DEVICE(TI_VENDOR_ID, FRI2_PRODUCT_ID) }, 407 { USB_DEVICE(HONEYWELL_VENDOR_ID, HONEYWELL_HGI80_PRODUCT_ID) }, 408 { USB_DEVICE(MXU1_VENDOR_ID, MXU1_1110_PRODUCT_ID) }, 409 { USB_DEVICE(MXU1_VENDOR_ID, MXU1_1130_PRODUCT_ID) }, 410 { USB_DEVICE(MXU1_VENDOR_ID, MXU1_1131_PRODUCT_ID) }, 411 { USB_DEVICE(MXU1_VENDOR_ID, MXU1_1150_PRODUCT_ID) }, 412 { USB_DEVICE(MXU1_VENDOR_ID, MXU1_1151_PRODUCT_ID) }, 413 { USB_DEVICE(STARTECH_VENDOR_ID, TI_3410_PRODUCT_ID) }, 414 { } /* terminator */ 415 }; 416 417 static struct usb_serial_driver ti_1port_device = { 418 .driver = { 419 .owner = THIS_MODULE, 420 .name = "ti_usb_3410_5052_1", 421 }, 422 .description = "TI USB 3410 1 port adapter", 423 .id_table = ti_id_table_3410, 424 .num_ports = 1, 425 .num_bulk_out = 1, 426 .attach = ti_startup, 427 .release = ti_release, 428 .port_probe = ti_port_probe, 429 .port_remove = ti_port_remove, 430 .open = ti_open, 431 .close = ti_close, 432 .write = ti_write, 433 .write_room = ti_write_room, 434 .chars_in_buffer = ti_chars_in_buffer, 435 .tx_empty = ti_tx_empty, 436 .throttle = ti_throttle, 437 .unthrottle = ti_unthrottle, 438 .get_serial = ti_get_serial_info, 439 .set_termios = ti_set_termios, 440 .tiocmget = ti_tiocmget, 441 .tiocmset = ti_tiocmset, 442 .tiocmiwait = usb_serial_generic_tiocmiwait, 443 .get_icount = usb_serial_generic_get_icount, 444 .break_ctl = ti_break, 445 .read_int_callback = ti_interrupt_callback, 446 .read_bulk_callback = ti_bulk_in_callback, 447 .write_bulk_callback = ti_bulk_out_callback, 448 }; 449 450 static struct usb_serial_driver ti_2port_device = { 451 .driver = { 452 .owner = THIS_MODULE, 453 .name = "ti_usb_3410_5052_2", 454 }, 455 .description = "TI USB 5052 2 port adapter", 456 .id_table = ti_id_table_5052, 457 .num_ports = 2, 458 .num_bulk_out = 1, 459 .attach = ti_startup, 460 .release = ti_release, 461 .port_probe = ti_port_probe, 462 .port_remove = ti_port_remove, 463 .open = ti_open, 464 .close = ti_close, 465 .write = ti_write, 466 .write_room = ti_write_room, 467 .chars_in_buffer = ti_chars_in_buffer, 468 .tx_empty = ti_tx_empty, 469 .throttle = ti_throttle, 470 .unthrottle = ti_unthrottle, 471 .get_serial = ti_get_serial_info, 472 .set_termios = ti_set_termios, 473 .tiocmget = ti_tiocmget, 474 .tiocmset = ti_tiocmset, 475 .tiocmiwait = usb_serial_generic_tiocmiwait, 476 .get_icount = usb_serial_generic_get_icount, 477 .break_ctl = ti_break, 478 .read_int_callback = ti_interrupt_callback, 479 .read_bulk_callback = ti_bulk_in_callback, 480 .write_bulk_callback = ti_bulk_out_callback, 481 }; 482 483 static struct usb_serial_driver * const serial_drivers[] = { 484 &ti_1port_device, &ti_2port_device, NULL 485 }; 486 487 MODULE_AUTHOR(TI_DRIVER_AUTHOR); 488 MODULE_DESCRIPTION(TI_DRIVER_DESC); 489 MODULE_LICENSE("GPL"); 490 491 MODULE_FIRMWARE("ti_3410.fw"); 492 MODULE_FIRMWARE("ti_5052.fw"); 493 MODULE_FIRMWARE("mts_cdma.fw"); 494 MODULE_FIRMWARE("mts_gsm.fw"); 495 MODULE_FIRMWARE("mts_edge.fw"); 496 MODULE_FIRMWARE("mts_mt9234mu.fw"); 497 MODULE_FIRMWARE("mts_mt9234zba.fw"); 498 MODULE_FIRMWARE("moxa/moxa-1110.fw"); 499 MODULE_FIRMWARE("moxa/moxa-1130.fw"); 500 MODULE_FIRMWARE("moxa/moxa-1131.fw"); 501 MODULE_FIRMWARE("moxa/moxa-1150.fw"); 502 MODULE_FIRMWARE("moxa/moxa-1151.fw"); 503 504 MODULE_DEVICE_TABLE(usb, ti_id_table_combined); 505 506 module_usb_serial_driver(serial_drivers, ti_id_table_combined); 507 508 static int ti_startup(struct usb_serial *serial) 509 { 510 struct ti_device *tdev; 511 struct usb_device *dev = serial->dev; 512 struct usb_host_interface *cur_altsetting; 513 int num_endpoints; 514 u16 vid, pid; 515 int status; 516 517 dev_dbg(&dev->dev, 518 "%s - product 0x%4X, num configurations %d, configuration value %d\n", 519 __func__, le16_to_cpu(dev->descriptor.idProduct), 520 dev->descriptor.bNumConfigurations, 521 dev->actconfig->desc.bConfigurationValue); 522 523 tdev = kzalloc(sizeof(struct ti_device), GFP_KERNEL); 524 if (!tdev) 525 return -ENOMEM; 526 527 mutex_init(&tdev->td_open_close_lock); 528 tdev->td_serial = serial; 529 usb_set_serial_data(serial, tdev); 530 531 /* determine device type */ 532 if (serial->type == &ti_1port_device) 533 tdev->td_is_3410 = 1; 534 dev_dbg(&dev->dev, "%s - device type is %s\n", __func__, 535 tdev->td_is_3410 ? "3410" : "5052"); 536 537 vid = le16_to_cpu(dev->descriptor.idVendor); 538 pid = le16_to_cpu(dev->descriptor.idProduct); 539 if (vid == MXU1_VENDOR_ID) { 540 switch (pid) { 541 case MXU1_1130_PRODUCT_ID: 542 case MXU1_1131_PRODUCT_ID: 543 tdev->td_rs485_only = true; 544 break; 545 } 546 } 547 548 cur_altsetting = serial->interface->cur_altsetting; 549 num_endpoints = cur_altsetting->desc.bNumEndpoints; 550 551 /* if we have only 1 configuration and 1 endpoint, download firmware */ 552 if (dev->descriptor.bNumConfigurations == 1 && num_endpoints == 1) { 553 status = ti_download_firmware(tdev); 554 555 if (status != 0) 556 goto free_tdev; 557 558 /* 3410 must be reset, 5052 resets itself */ 559 if (tdev->td_is_3410) { 560 msleep_interruptible(100); 561 usb_reset_device(dev); 562 } 563 564 status = -ENODEV; 565 goto free_tdev; 566 } 567 568 /* the second configuration must be set */ 569 if (dev->actconfig->desc.bConfigurationValue == TI_BOOT_CONFIG) { 570 status = usb_driver_set_configuration(dev, TI_ACTIVE_CONFIG); 571 status = status ? status : -ENODEV; 572 goto free_tdev; 573 } 574 575 if (serial->num_bulk_in < serial->num_ports || 576 serial->num_bulk_out < serial->num_ports) { 577 dev_err(&serial->interface->dev, "missing endpoints\n"); 578 status = -ENODEV; 579 goto free_tdev; 580 } 581 582 return 0; 583 584 free_tdev: 585 kfree(tdev); 586 usb_set_serial_data(serial, NULL); 587 return status; 588 } 589 590 591 static void ti_release(struct usb_serial *serial) 592 { 593 struct ti_device *tdev = usb_get_serial_data(serial); 594 595 kfree(tdev); 596 } 597 598 static int ti_port_probe(struct usb_serial_port *port) 599 { 600 struct ti_port *tport; 601 602 tport = kzalloc(sizeof(*tport), GFP_KERNEL); 603 if (!tport) 604 return -ENOMEM; 605 606 spin_lock_init(&tport->tp_lock); 607 if (port == port->serial->port[0]) 608 tport->tp_uart_base_addr = TI_UART1_BASE_ADDR; 609 else 610 tport->tp_uart_base_addr = TI_UART2_BASE_ADDR; 611 tport->tp_port = port; 612 tport->tp_tdev = usb_get_serial_data(port->serial); 613 614 if (tport->tp_tdev->td_rs485_only) 615 tport->tp_uart_mode = TI_UART_485_RECEIVER_DISABLED; 616 else 617 tport->tp_uart_mode = TI_UART_232; 618 619 usb_set_serial_port_data(port, tport); 620 621 /* 622 * The TUSB5052 LSR does not tell when the transmitter shift register 623 * has emptied so add a one-character drain delay. 624 */ 625 if (!tport->tp_tdev->td_is_3410) 626 port->port.drain_delay = 1; 627 628 return 0; 629 } 630 631 static void ti_port_remove(struct usb_serial_port *port) 632 { 633 struct ti_port *tport; 634 635 tport = usb_get_serial_port_data(port); 636 kfree(tport); 637 } 638 639 static int ti_open(struct tty_struct *tty, struct usb_serial_port *port) 640 { 641 struct ti_port *tport = usb_get_serial_port_data(port); 642 struct ti_device *tdev; 643 struct usb_device *dev; 644 struct urb *urb; 645 int status; 646 u16 open_settings; 647 648 open_settings = (TI_PIPE_MODE_CONTINUOUS | 649 TI_PIPE_TIMEOUT_ENABLE | 650 (TI_TRANSFER_TIMEOUT << 2)); 651 652 dev = port->serial->dev; 653 tdev = tport->tp_tdev; 654 655 /* only one open on any port on a device at a time */ 656 if (mutex_lock_interruptible(&tdev->td_open_close_lock)) 657 return -ERESTARTSYS; 658 659 tport->tp_msr = 0; 660 tport->tp_shadow_mcr |= (TI_MCR_RTS | TI_MCR_DTR); 661 662 /* start interrupt urb the first time a port is opened on this device */ 663 if (tdev->td_open_port_count == 0) { 664 dev_dbg(&port->dev, "%s - start interrupt in urb\n", __func__); 665 urb = tdev->td_serial->port[0]->interrupt_in_urb; 666 if (!urb) { 667 dev_err(&port->dev, "%s - no interrupt urb\n", __func__); 668 status = -EINVAL; 669 goto release_lock; 670 } 671 urb->context = tdev; 672 status = usb_submit_urb(urb, GFP_KERNEL); 673 if (status) { 674 dev_err(&port->dev, "%s - submit interrupt urb failed, %d\n", __func__, status); 675 goto release_lock; 676 } 677 } 678 679 if (tty) 680 ti_set_termios(tty, port, &tty->termios); 681 682 status = ti_port_cmd_out(port, TI_OPEN_PORT, open_settings, NULL, 0); 683 if (status) { 684 dev_err(&port->dev, "%s - cannot send open command, %d\n", 685 __func__, status); 686 goto unlink_int_urb; 687 } 688 689 status = ti_port_cmd_out(port, TI_START_PORT, 0, NULL, 0); 690 if (status) { 691 dev_err(&port->dev, "%s - cannot send start command, %d\n", 692 __func__, status); 693 goto unlink_int_urb; 694 } 695 696 status = ti_port_cmd_out(port, TI_PURGE_PORT, TI_PURGE_INPUT, NULL, 0); 697 if (status) { 698 dev_err(&port->dev, "%s - cannot clear input buffers, %d\n", 699 __func__, status); 700 goto unlink_int_urb; 701 } 702 status = ti_port_cmd_out(port, TI_PURGE_PORT, TI_PURGE_OUTPUT, NULL, 0); 703 if (status) { 704 dev_err(&port->dev, "%s - cannot clear output buffers, %d\n", 705 __func__, status); 706 goto unlink_int_urb; 707 } 708 709 /* reset the data toggle on the bulk endpoints to work around bug in 710 * host controllers where things get out of sync some times */ 711 usb_clear_halt(dev, port->write_urb->pipe); 712 usb_clear_halt(dev, port->read_urb->pipe); 713 714 if (tty) 715 ti_set_termios(tty, port, &tty->termios); 716 717 status = ti_port_cmd_out(port, TI_OPEN_PORT, open_settings, NULL, 0); 718 if (status) { 719 dev_err(&port->dev, "%s - cannot send open command (2), %d\n", 720 __func__, status); 721 goto unlink_int_urb; 722 } 723 724 status = ti_port_cmd_out(port, TI_START_PORT, 0, NULL, 0); 725 if (status) { 726 dev_err(&port->dev, "%s - cannot send start command (2), %d\n", 727 __func__, status); 728 goto unlink_int_urb; 729 } 730 731 /* start read urb */ 732 urb = port->read_urb; 733 if (!urb) { 734 dev_err(&port->dev, "%s - no read urb\n", __func__); 735 status = -EINVAL; 736 goto unlink_int_urb; 737 } 738 tport->tp_read_urb_state = TI_READ_URB_RUNNING; 739 urb->context = tport; 740 status = usb_submit_urb(urb, GFP_KERNEL); 741 if (status) { 742 dev_err(&port->dev, "%s - submit read urb failed, %d\n", 743 __func__, status); 744 goto unlink_int_urb; 745 } 746 747 tport->tp_is_open = 1; 748 ++tdev->td_open_port_count; 749 750 goto release_lock; 751 752 unlink_int_urb: 753 if (tdev->td_open_port_count == 0) 754 usb_kill_urb(port->serial->port[0]->interrupt_in_urb); 755 release_lock: 756 mutex_unlock(&tdev->td_open_close_lock); 757 return status; 758 } 759 760 761 static void ti_close(struct usb_serial_port *port) 762 { 763 struct ti_device *tdev; 764 struct ti_port *tport; 765 int status; 766 unsigned long flags; 767 768 tdev = usb_get_serial_data(port->serial); 769 tport = usb_get_serial_port_data(port); 770 771 tport->tp_is_open = 0; 772 773 usb_kill_urb(port->read_urb); 774 usb_kill_urb(port->write_urb); 775 tport->tp_write_urb_in_use = 0; 776 spin_lock_irqsave(&tport->tp_lock, flags); 777 kfifo_reset_out(&port->write_fifo); 778 spin_unlock_irqrestore(&tport->tp_lock, flags); 779 780 status = ti_port_cmd_out(port, TI_CLOSE_PORT, 0, NULL, 0); 781 if (status) 782 dev_err(&port->dev, 783 "%s - cannot send close port command, %d\n" 784 , __func__, status); 785 786 mutex_lock(&tdev->td_open_close_lock); 787 --tdev->td_open_port_count; 788 if (tdev->td_open_port_count == 0) { 789 /* last port is closed, shut down interrupt urb */ 790 usb_kill_urb(port->serial->port[0]->interrupt_in_urb); 791 } 792 mutex_unlock(&tdev->td_open_close_lock); 793 } 794 795 796 static int ti_write(struct tty_struct *tty, struct usb_serial_port *port, 797 const unsigned char *data, int count) 798 { 799 struct ti_port *tport = usb_get_serial_port_data(port); 800 801 if (count == 0) { 802 return 0; 803 } 804 805 if (!tport->tp_is_open) 806 return -ENODEV; 807 808 count = kfifo_in_locked(&port->write_fifo, data, count, 809 &tport->tp_lock); 810 ti_send(tport); 811 812 return count; 813 } 814 815 816 static unsigned int ti_write_room(struct tty_struct *tty) 817 { 818 struct usb_serial_port *port = tty->driver_data; 819 struct ti_port *tport = usb_get_serial_port_data(port); 820 unsigned int room; 821 unsigned long flags; 822 823 spin_lock_irqsave(&tport->tp_lock, flags); 824 room = kfifo_avail(&port->write_fifo); 825 spin_unlock_irqrestore(&tport->tp_lock, flags); 826 827 dev_dbg(&port->dev, "%s - returns %u\n", __func__, room); 828 return room; 829 } 830 831 832 static unsigned int ti_chars_in_buffer(struct tty_struct *tty) 833 { 834 struct usb_serial_port *port = tty->driver_data; 835 struct ti_port *tport = usb_get_serial_port_data(port); 836 unsigned int chars; 837 unsigned long flags; 838 839 spin_lock_irqsave(&tport->tp_lock, flags); 840 chars = kfifo_len(&port->write_fifo); 841 spin_unlock_irqrestore(&tport->tp_lock, flags); 842 843 dev_dbg(&port->dev, "%s - returns %u\n", __func__, chars); 844 return chars; 845 } 846 847 static bool ti_tx_empty(struct usb_serial_port *port) 848 { 849 struct ti_port *tport = usb_get_serial_port_data(port); 850 u8 lsr, mask; 851 int ret; 852 853 /* 854 * TUSB5052 does not have the TEMT bit to tell if the shift register 855 * is empty. 856 */ 857 if (tport->tp_tdev->td_is_3410) 858 mask = TI_LSR_TX_EMPTY_BOTH; 859 else 860 mask = TI_LSR_TX_EMPTY; 861 862 ret = ti_get_lsr(tport, &lsr); 863 if (!ret && !(lsr & mask)) 864 return false; 865 866 return true; 867 } 868 869 static void ti_throttle(struct tty_struct *tty) 870 { 871 struct usb_serial_port *port = tty->driver_data; 872 struct ti_port *tport = usb_get_serial_port_data(port); 873 874 if (I_IXOFF(tty) || C_CRTSCTS(tty)) 875 ti_stop_read(tport, tty); 876 877 } 878 879 880 static void ti_unthrottle(struct tty_struct *tty) 881 { 882 struct usb_serial_port *port = tty->driver_data; 883 struct ti_port *tport = usb_get_serial_port_data(port); 884 int status; 885 886 if (I_IXOFF(tty) || C_CRTSCTS(tty)) { 887 status = ti_restart_read(tport, tty); 888 if (status) 889 dev_err(&port->dev, "%s - cannot restart read, %d\n", 890 __func__, status); 891 } 892 } 893 894 static void ti_set_termios(struct tty_struct *tty, 895 struct usb_serial_port *port, struct ktermios *old_termios) 896 { 897 struct ti_port *tport = usb_get_serial_port_data(port); 898 struct ti_uart_config *config; 899 int baud; 900 int status; 901 unsigned int mcr; 902 u16 wbaudrate; 903 u16 wflags = 0; 904 905 config = kmalloc(sizeof(*config), GFP_KERNEL); 906 if (!config) 907 return; 908 909 /* these flags must be set */ 910 wflags |= TI_UART_ENABLE_MS_INTS; 911 wflags |= TI_UART_ENABLE_AUTO_START_DMA; 912 config->bUartMode = tport->tp_uart_mode; 913 914 switch (C_CSIZE(tty)) { 915 case CS5: 916 config->bDataBits = TI_UART_5_DATA_BITS; 917 break; 918 case CS6: 919 config->bDataBits = TI_UART_6_DATA_BITS; 920 break; 921 case CS7: 922 config->bDataBits = TI_UART_7_DATA_BITS; 923 break; 924 default: 925 case CS8: 926 config->bDataBits = TI_UART_8_DATA_BITS; 927 break; 928 } 929 930 /* CMSPAR isn't supported by this driver */ 931 tty->termios.c_cflag &= ~CMSPAR; 932 933 if (C_PARENB(tty)) { 934 if (C_PARODD(tty)) { 935 wflags |= TI_UART_ENABLE_PARITY_CHECKING; 936 config->bParity = TI_UART_ODD_PARITY; 937 } else { 938 wflags |= TI_UART_ENABLE_PARITY_CHECKING; 939 config->bParity = TI_UART_EVEN_PARITY; 940 } 941 } else { 942 wflags &= ~TI_UART_ENABLE_PARITY_CHECKING; 943 config->bParity = TI_UART_NO_PARITY; 944 } 945 946 if (C_CSTOPB(tty)) 947 config->bStopBits = TI_UART_2_STOP_BITS; 948 else 949 config->bStopBits = TI_UART_1_STOP_BITS; 950 951 if (C_CRTSCTS(tty)) { 952 /* RTS flow control must be off to drop RTS for baud rate B0 */ 953 if ((C_BAUD(tty)) != B0) 954 wflags |= TI_UART_ENABLE_RTS_IN; 955 wflags |= TI_UART_ENABLE_CTS_OUT; 956 } else { 957 ti_restart_read(tport, tty); 958 } 959 960 if (I_IXOFF(tty) || I_IXON(tty)) { 961 config->cXon = START_CHAR(tty); 962 config->cXoff = STOP_CHAR(tty); 963 964 if (I_IXOFF(tty)) 965 wflags |= TI_UART_ENABLE_X_IN; 966 else 967 ti_restart_read(tport, tty); 968 969 if (I_IXON(tty)) 970 wflags |= TI_UART_ENABLE_X_OUT; 971 } 972 973 baud = tty_get_baud_rate(tty); 974 if (!baud) 975 baud = 9600; 976 if (tport->tp_tdev->td_is_3410) 977 wbaudrate = (923077 + baud/2) / baud; 978 else 979 wbaudrate = (461538 + baud/2) / baud; 980 981 /* FIXME: Should calculate resulting baud here and report it back */ 982 if ((C_BAUD(tty)) != B0) 983 tty_encode_baud_rate(tty, baud, baud); 984 985 dev_dbg(&port->dev, 986 "%s - BaudRate=%d, wBaudRate=%d, wFlags=0x%04X, bDataBits=%d, bParity=%d, bStopBits=%d, cXon=%d, cXoff=%d, bUartMode=%d\n", 987 __func__, baud, wbaudrate, wflags, 988 config->bDataBits, config->bParity, config->bStopBits, 989 config->cXon, config->cXoff, config->bUartMode); 990 991 config->wBaudRate = cpu_to_be16(wbaudrate); 992 config->wFlags = cpu_to_be16(wflags); 993 994 status = ti_port_cmd_out(port, TI_SET_CONFIG, 0, config, 995 sizeof(*config)); 996 if (status) 997 dev_err(&port->dev, "%s - cannot set config on port %d, %d\n", 998 __func__, port->port_number, status); 999 1000 /* SET_CONFIG asserts RTS and DTR, reset them correctly */ 1001 mcr = tport->tp_shadow_mcr; 1002 /* if baud rate is B0, clear RTS and DTR */ 1003 if (C_BAUD(tty) == B0) 1004 mcr &= ~(TI_MCR_DTR | TI_MCR_RTS); 1005 status = ti_set_mcr(tport, mcr); 1006 if (status) 1007 dev_err(&port->dev, "%s - cannot set modem control on port %d, %d\n", 1008 __func__, port->port_number, status); 1009 1010 kfree(config); 1011 } 1012 1013 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 void ti_break(struct tty_struct *tty, int break_state) 1073 { 1074 struct usb_serial_port *port = tty->driver_data; 1075 struct ti_port *tport = usb_get_serial_port_data(port); 1076 int status; 1077 1078 dev_dbg(&port->dev, "%s - state = %d\n", __func__, break_state); 1079 1080 status = ti_write_byte(port, tport->tp_tdev, 1081 tport->tp_uart_base_addr + TI_UART_OFFSET_LCR, 1082 TI_LCR_BREAK, break_state == -1 ? TI_LCR_BREAK : 0); 1083 1084 if (status) 1085 dev_dbg(&port->dev, "%s - error setting break, %d\n", __func__, status); 1086 } 1087 1088 static int ti_get_port_from_code(unsigned char code) 1089 { 1090 return (code >> 6) & 0x01; 1091 } 1092 1093 static int ti_get_func_from_code(unsigned char code) 1094 { 1095 return code & 0x0f; 1096 } 1097 1098 static void ti_interrupt_callback(struct urb *urb) 1099 { 1100 struct ti_device *tdev = urb->context; 1101 struct usb_serial_port *port; 1102 struct usb_serial *serial = tdev->td_serial; 1103 struct ti_port *tport; 1104 struct device *dev = &urb->dev->dev; 1105 unsigned char *data = urb->transfer_buffer; 1106 int length = urb->actual_length; 1107 int port_number; 1108 int function; 1109 int status = urb->status; 1110 int retval; 1111 u8 msr; 1112 1113 switch (status) { 1114 case 0: 1115 break; 1116 case -ECONNRESET: 1117 case -ENOENT: 1118 case -ESHUTDOWN: 1119 dev_dbg(dev, "%s - urb shutting down, %d\n", __func__, status); 1120 return; 1121 default: 1122 dev_err(dev, "%s - nonzero urb status, %d\n", __func__, status); 1123 goto exit; 1124 } 1125 1126 if (length != 2) { 1127 dev_dbg(dev, "%s - bad packet size, %d\n", __func__, length); 1128 goto exit; 1129 } 1130 1131 if (data[0] == TI_CODE_HARDWARE_ERROR) { 1132 dev_err(dev, "%s - hardware error, %d\n", __func__, data[1]); 1133 goto exit; 1134 } 1135 1136 port_number = ti_get_port_from_code(data[0]); 1137 function = ti_get_func_from_code(data[0]); 1138 1139 dev_dbg(dev, "%s - port_number %d, function %d, data 0x%02X\n", 1140 __func__, port_number, function, data[1]); 1141 1142 if (port_number >= serial->num_ports) { 1143 dev_err(dev, "%s - bad port number, %d\n", 1144 __func__, port_number); 1145 goto exit; 1146 } 1147 1148 port = serial->port[port_number]; 1149 1150 tport = usb_get_serial_port_data(port); 1151 if (!tport) 1152 goto exit; 1153 1154 switch (function) { 1155 case TI_CODE_DATA_ERROR: 1156 dev_err(dev, "%s - DATA ERROR, port %d, data 0x%02X\n", 1157 __func__, port_number, data[1]); 1158 break; 1159 1160 case TI_CODE_MODEM_STATUS: 1161 msr = data[1]; 1162 dev_dbg(dev, "%s - port %d, msr 0x%02X\n", __func__, port_number, msr); 1163 ti_handle_new_msr(tport, msr); 1164 break; 1165 1166 default: 1167 dev_err(dev, "%s - unknown interrupt code, 0x%02X\n", 1168 __func__, data[1]); 1169 break; 1170 } 1171 1172 exit: 1173 retval = usb_submit_urb(urb, GFP_ATOMIC); 1174 if (retval) 1175 dev_err(dev, "%s - resubmit interrupt urb failed, %d\n", 1176 __func__, retval); 1177 } 1178 1179 1180 static void ti_bulk_in_callback(struct urb *urb) 1181 { 1182 struct ti_port *tport = urb->context; 1183 struct usb_serial_port *port = tport->tp_port; 1184 struct device *dev = &urb->dev->dev; 1185 int status = urb->status; 1186 unsigned long flags; 1187 int retval = 0; 1188 1189 switch (status) { 1190 case 0: 1191 break; 1192 case -ECONNRESET: 1193 case -ENOENT: 1194 case -ESHUTDOWN: 1195 dev_dbg(dev, "%s - urb shutting down, %d\n", __func__, status); 1196 return; 1197 default: 1198 dev_err(dev, "%s - nonzero urb status, %d\n", 1199 __func__, status); 1200 } 1201 1202 if (status == -EPIPE) 1203 goto exit; 1204 1205 if (status) { 1206 dev_err(dev, "%s - stopping read!\n", __func__); 1207 return; 1208 } 1209 1210 if (urb->actual_length) { 1211 usb_serial_debug_data(dev, __func__, urb->actual_length, 1212 urb->transfer_buffer); 1213 1214 if (!tport->tp_is_open) 1215 dev_dbg(dev, "%s - port closed, dropping data\n", 1216 __func__); 1217 else 1218 ti_recv(port, urb->transfer_buffer, urb->actual_length); 1219 spin_lock_irqsave(&tport->tp_lock, flags); 1220 port->icount.rx += urb->actual_length; 1221 spin_unlock_irqrestore(&tport->tp_lock, flags); 1222 } 1223 1224 exit: 1225 /* continue to read unless stopping */ 1226 spin_lock_irqsave(&tport->tp_lock, flags); 1227 if (tport->tp_read_urb_state == TI_READ_URB_RUNNING) 1228 retval = usb_submit_urb(urb, GFP_ATOMIC); 1229 else if (tport->tp_read_urb_state == TI_READ_URB_STOPPING) 1230 tport->tp_read_urb_state = TI_READ_URB_STOPPED; 1231 1232 spin_unlock_irqrestore(&tport->tp_lock, flags); 1233 if (retval) 1234 dev_err(dev, "%s - resubmit read urb failed, %d\n", 1235 __func__, retval); 1236 } 1237 1238 1239 static void ti_bulk_out_callback(struct urb *urb) 1240 { 1241 struct ti_port *tport = urb->context; 1242 struct usb_serial_port *port = tport->tp_port; 1243 int status = urb->status; 1244 1245 tport->tp_write_urb_in_use = 0; 1246 1247 switch (status) { 1248 case 0: 1249 break; 1250 case -ECONNRESET: 1251 case -ENOENT: 1252 case -ESHUTDOWN: 1253 dev_dbg(&port->dev, "%s - urb shutting down, %d\n", __func__, status); 1254 return; 1255 default: 1256 dev_err_console(port, "%s - nonzero urb status, %d\n", 1257 __func__, status); 1258 } 1259 1260 /* send any buffered data */ 1261 ti_send(tport); 1262 } 1263 1264 1265 static void ti_recv(struct usb_serial_port *port, unsigned char *data, 1266 int length) 1267 { 1268 int cnt; 1269 1270 do { 1271 cnt = tty_insert_flip_string(&port->port, data, length); 1272 if (cnt < length) { 1273 dev_err(&port->dev, "%s - dropping data, %d bytes lost\n", 1274 __func__, length - cnt); 1275 if (cnt == 0) 1276 break; 1277 } 1278 tty_flip_buffer_push(&port->port); 1279 data += cnt; 1280 length -= cnt; 1281 } while (length > 0); 1282 } 1283 1284 1285 static void ti_send(struct ti_port *tport) 1286 { 1287 int count, result; 1288 struct usb_serial_port *port = tport->tp_port; 1289 unsigned long flags; 1290 1291 spin_lock_irqsave(&tport->tp_lock, flags); 1292 1293 if (tport->tp_write_urb_in_use) 1294 goto unlock; 1295 1296 count = kfifo_out(&port->write_fifo, 1297 port->write_urb->transfer_buffer, 1298 port->bulk_out_size); 1299 1300 if (count == 0) 1301 goto unlock; 1302 1303 tport->tp_write_urb_in_use = 1; 1304 1305 spin_unlock_irqrestore(&tport->tp_lock, flags); 1306 1307 usb_serial_debug_data(&port->dev, __func__, count, 1308 port->write_urb->transfer_buffer); 1309 1310 usb_fill_bulk_urb(port->write_urb, port->serial->dev, 1311 usb_sndbulkpipe(port->serial->dev, 1312 port->bulk_out_endpointAddress), 1313 port->write_urb->transfer_buffer, count, 1314 ti_bulk_out_callback, tport); 1315 1316 result = usb_submit_urb(port->write_urb, GFP_ATOMIC); 1317 if (result) { 1318 dev_err_console(port, "%s - submit write urb failed, %d\n", 1319 __func__, result); 1320 tport->tp_write_urb_in_use = 0; 1321 /* TODO: reschedule ti_send */ 1322 } else { 1323 spin_lock_irqsave(&tport->tp_lock, flags); 1324 port->icount.tx += count; 1325 spin_unlock_irqrestore(&tport->tp_lock, flags); 1326 } 1327 1328 /* more room in the buffer for new writes, wakeup */ 1329 tty_port_tty_wakeup(&port->port); 1330 1331 return; 1332 unlock: 1333 spin_unlock_irqrestore(&tport->tp_lock, flags); 1334 return; 1335 } 1336 1337 1338 static int ti_set_mcr(struct ti_port *tport, unsigned int mcr) 1339 { 1340 unsigned long flags; 1341 int status; 1342 1343 status = ti_write_byte(tport->tp_port, tport->tp_tdev, 1344 tport->tp_uart_base_addr + TI_UART_OFFSET_MCR, 1345 TI_MCR_RTS | TI_MCR_DTR | TI_MCR_LOOP, mcr); 1346 1347 spin_lock_irqsave(&tport->tp_lock, flags); 1348 if (!status) 1349 tport->tp_shadow_mcr = mcr; 1350 spin_unlock_irqrestore(&tport->tp_lock, flags); 1351 1352 return status; 1353 } 1354 1355 1356 static int ti_get_lsr(struct ti_port *tport, u8 *lsr) 1357 { 1358 int size, status; 1359 struct usb_serial_port *port = tport->tp_port; 1360 struct ti_port_status *data; 1361 1362 size = sizeof(struct ti_port_status); 1363 data = kmalloc(size, GFP_KERNEL); 1364 if (!data) 1365 return -ENOMEM; 1366 1367 status = ti_port_cmd_in(port, TI_GET_PORT_STATUS, 0, data, size); 1368 if (status) { 1369 dev_err(&port->dev, 1370 "%s - get port status command failed, %d\n", 1371 __func__, status); 1372 goto free_data; 1373 } 1374 1375 dev_dbg(&port->dev, "%s - lsr 0x%02X\n", __func__, data->bLSR); 1376 1377 *lsr = data->bLSR; 1378 1379 free_data: 1380 kfree(data); 1381 return status; 1382 } 1383 1384 1385 static void ti_get_serial_info(struct tty_struct *tty, struct serial_struct *ss) 1386 { 1387 struct usb_serial_port *port = tty->driver_data; 1388 struct ti_port *tport = usb_get_serial_port_data(port); 1389 1390 ss->baud_base = tport->tp_tdev->td_is_3410 ? 921600 : 460800; 1391 } 1392 1393 1394 static void ti_handle_new_msr(struct ti_port *tport, u8 msr) 1395 { 1396 struct async_icount *icount; 1397 struct tty_struct *tty; 1398 unsigned long flags; 1399 1400 dev_dbg(&tport->tp_port->dev, "%s - msr 0x%02X\n", __func__, msr); 1401 1402 if (msr & TI_MSR_DELTA_MASK) { 1403 spin_lock_irqsave(&tport->tp_lock, flags); 1404 icount = &tport->tp_port->icount; 1405 if (msr & TI_MSR_DELTA_CTS) 1406 icount->cts++; 1407 if (msr & TI_MSR_DELTA_DSR) 1408 icount->dsr++; 1409 if (msr & TI_MSR_DELTA_CD) 1410 icount->dcd++; 1411 if (msr & TI_MSR_DELTA_RI) 1412 icount->rng++; 1413 wake_up_interruptible(&tport->tp_port->port.delta_msr_wait); 1414 spin_unlock_irqrestore(&tport->tp_lock, flags); 1415 } 1416 1417 tport->tp_msr = msr & TI_MSR_MASK; 1418 1419 /* handle CTS flow control */ 1420 tty = tty_port_tty_get(&tport->tp_port->port); 1421 if (tty && C_CRTSCTS(tty)) { 1422 if (msr & TI_MSR_CTS) 1423 tty_wakeup(tty); 1424 } 1425 tty_kref_put(tty); 1426 } 1427 1428 1429 static void ti_stop_read(struct ti_port *tport, struct tty_struct *tty) 1430 { 1431 unsigned long flags; 1432 1433 spin_lock_irqsave(&tport->tp_lock, flags); 1434 1435 if (tport->tp_read_urb_state == TI_READ_URB_RUNNING) 1436 tport->tp_read_urb_state = TI_READ_URB_STOPPING; 1437 1438 spin_unlock_irqrestore(&tport->tp_lock, flags); 1439 } 1440 1441 1442 static int ti_restart_read(struct ti_port *tport, struct tty_struct *tty) 1443 { 1444 struct urb *urb; 1445 int status = 0; 1446 unsigned long flags; 1447 1448 spin_lock_irqsave(&tport->tp_lock, flags); 1449 1450 if (tport->tp_read_urb_state == TI_READ_URB_STOPPED) { 1451 tport->tp_read_urb_state = TI_READ_URB_RUNNING; 1452 urb = tport->tp_port->read_urb; 1453 spin_unlock_irqrestore(&tport->tp_lock, flags); 1454 urb->context = tport; 1455 status = usb_submit_urb(urb, GFP_KERNEL); 1456 } else { 1457 tport->tp_read_urb_state = TI_READ_URB_RUNNING; 1458 spin_unlock_irqrestore(&tport->tp_lock, flags); 1459 } 1460 1461 return status; 1462 } 1463 1464 static int ti_command_out_sync(struct usb_device *udev, u8 command, 1465 u16 moduleid, u16 value, void *data, int size) 1466 { 1467 int status; 1468 1469 status = usb_control_msg(udev, usb_sndctrlpipe(udev, 0), command, 1470 USB_TYPE_VENDOR | USB_RECIP_DEVICE | USB_DIR_OUT, 1471 value, moduleid, data, size, 1000); 1472 if (status < 0) 1473 return status; 1474 1475 return 0; 1476 } 1477 1478 static int ti_command_in_sync(struct usb_device *udev, u8 command, 1479 u16 moduleid, u16 value, void *data, int size) 1480 { 1481 int status; 1482 1483 status = usb_control_msg(udev, usb_rcvctrlpipe(udev, 0), command, 1484 USB_TYPE_VENDOR | USB_RECIP_DEVICE | USB_DIR_IN, 1485 value, moduleid, data, size, 1000); 1486 if (status == size) 1487 status = 0; 1488 else if (status >= 0) 1489 status = -ECOMM; 1490 1491 return status; 1492 } 1493 1494 static int ti_port_cmd_out(struct usb_serial_port *port, u8 command, 1495 u16 value, void *data, int size) 1496 { 1497 return ti_command_out_sync(port->serial->dev, command, 1498 TI_UART1_PORT + port->port_number, 1499 value, data, size); 1500 } 1501 1502 static int ti_port_cmd_in(struct usb_serial_port *port, u8 command, 1503 u16 value, void *data, int size) 1504 { 1505 return ti_command_in_sync(port->serial->dev, command, 1506 TI_UART1_PORT + port->port_number, 1507 value, data, size); 1508 } 1509 1510 static int ti_write_byte(struct usb_serial_port *port, 1511 struct ti_device *tdev, unsigned long addr, 1512 u8 mask, u8 byte) 1513 { 1514 int status; 1515 unsigned int size; 1516 struct ti_write_data_bytes *data; 1517 1518 dev_dbg(&port->dev, "%s - addr 0x%08lX, mask 0x%02X, byte 0x%02X\n", __func__, 1519 addr, mask, byte); 1520 1521 size = sizeof(struct ti_write_data_bytes) + 2; 1522 data = kmalloc(size, GFP_KERNEL); 1523 if (!data) 1524 return -ENOMEM; 1525 1526 data->bAddrType = TI_RW_DATA_ADDR_XDATA; 1527 data->bDataType = TI_RW_DATA_BYTE; 1528 data->bDataCounter = 1; 1529 data->wBaseAddrHi = cpu_to_be16(addr>>16); 1530 data->wBaseAddrLo = cpu_to_be16(addr); 1531 data->bData[0] = mask; 1532 data->bData[1] = byte; 1533 1534 status = ti_command_out_sync(port->serial->dev, TI_WRITE_DATA, 1535 TI_RAM_PORT, 0, data, size); 1536 if (status < 0) 1537 dev_err(&port->dev, "%s - failed, %d\n", __func__, status); 1538 1539 kfree(data); 1540 1541 return status; 1542 } 1543 1544 static int ti_do_download(struct usb_device *dev, int pipe, 1545 u8 *buffer, int size) 1546 { 1547 int pos; 1548 u8 cs = 0; 1549 int done; 1550 struct ti_firmware_header *header; 1551 int status = 0; 1552 int len; 1553 1554 for (pos = sizeof(struct ti_firmware_header); pos < size; pos++) 1555 cs = (u8)(cs + buffer[pos]); 1556 1557 header = (struct ti_firmware_header *)buffer; 1558 header->wLength = cpu_to_le16(size - sizeof(*header)); 1559 header->bCheckSum = cs; 1560 1561 dev_dbg(&dev->dev, "%s - downloading firmware\n", __func__); 1562 for (pos = 0; pos < size; pos += done) { 1563 len = min(size - pos, TI_DOWNLOAD_MAX_PACKET_SIZE); 1564 status = usb_bulk_msg(dev, pipe, buffer + pos, len, 1565 &done, 1000); 1566 if (status) 1567 break; 1568 } 1569 return status; 1570 } 1571 1572 static int ti_download_firmware(struct ti_device *tdev) 1573 { 1574 int status; 1575 int buffer_size; 1576 u8 *buffer; 1577 struct usb_device *dev = tdev->td_serial->dev; 1578 unsigned int pipe = usb_sndbulkpipe(dev, 1579 tdev->td_serial->port[0]->bulk_out_endpointAddress); 1580 const struct firmware *fw_p; 1581 char buf[32]; 1582 1583 if (le16_to_cpu(dev->descriptor.idVendor) == MXU1_VENDOR_ID) { 1584 snprintf(buf, 1585 sizeof(buf), 1586 "moxa/moxa-%04x.fw", 1587 le16_to_cpu(dev->descriptor.idProduct)); 1588 1589 status = request_firmware(&fw_p, buf, &dev->dev); 1590 goto check_firmware; 1591 } 1592 1593 /* try ID specific firmware first, then try generic firmware */ 1594 sprintf(buf, "ti_usb-v%04x-p%04x.fw", 1595 le16_to_cpu(dev->descriptor.idVendor), 1596 le16_to_cpu(dev->descriptor.idProduct)); 1597 status = request_firmware(&fw_p, buf, &dev->dev); 1598 1599 if (status != 0) { 1600 buf[0] = '\0'; 1601 if (le16_to_cpu(dev->descriptor.idVendor) == MTS_VENDOR_ID) { 1602 switch (le16_to_cpu(dev->descriptor.idProduct)) { 1603 case MTS_CDMA_PRODUCT_ID: 1604 strcpy(buf, "mts_cdma.fw"); 1605 break; 1606 case MTS_GSM_PRODUCT_ID: 1607 strcpy(buf, "mts_gsm.fw"); 1608 break; 1609 case MTS_EDGE_PRODUCT_ID: 1610 strcpy(buf, "mts_edge.fw"); 1611 break; 1612 case MTS_MT9234MU_PRODUCT_ID: 1613 strcpy(buf, "mts_mt9234mu.fw"); 1614 break; 1615 case MTS_MT9234ZBA_PRODUCT_ID: 1616 strcpy(buf, "mts_mt9234zba.fw"); 1617 break; 1618 case MTS_MT9234ZBAOLD_PRODUCT_ID: 1619 strcpy(buf, "mts_mt9234zba.fw"); 1620 break; } 1621 } 1622 if (buf[0] == '\0') { 1623 if (tdev->td_is_3410) 1624 strcpy(buf, "ti_3410.fw"); 1625 else 1626 strcpy(buf, "ti_5052.fw"); 1627 } 1628 status = request_firmware(&fw_p, buf, &dev->dev); 1629 } 1630 1631 check_firmware: 1632 if (status) { 1633 dev_err(&dev->dev, "%s - firmware not found\n", __func__); 1634 return -ENOENT; 1635 } 1636 if (fw_p->size > TI_FIRMWARE_BUF_SIZE) { 1637 dev_err(&dev->dev, "%s - firmware too large %zu\n", __func__, fw_p->size); 1638 release_firmware(fw_p); 1639 return -ENOENT; 1640 } 1641 1642 buffer_size = TI_FIRMWARE_BUF_SIZE + sizeof(struct ti_firmware_header); 1643 buffer = kmalloc(buffer_size, GFP_KERNEL); 1644 if (buffer) { 1645 memcpy(buffer, fw_p->data, fw_p->size); 1646 memset(buffer + fw_p->size, 0xff, buffer_size - fw_p->size); 1647 status = ti_do_download(dev, pipe, buffer, fw_p->size); 1648 kfree(buffer); 1649 } else { 1650 status = -ENOMEM; 1651 } 1652 release_firmware(fw_p); 1653 if (status) { 1654 dev_err(&dev->dev, "%s - error downloading firmware, %d\n", 1655 __func__, status); 1656 return status; 1657 } 1658 1659 dev_dbg(&dev->dev, "%s - download successful\n", __func__); 1660 1661 return 0; 1662 } 1663