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 TI_3410_PRODUCT_ID 0x3410 41 #define IBM_4543_PRODUCT_ID 0x4543 42 #define IBM_454B_PRODUCT_ID 0x454b 43 #define IBM_454C_PRODUCT_ID 0x454c 44 #define TI_3410_EZ430_ID 0xF430 /* TI ez430 development tool */ 45 #define TI_5052_BOOT_PRODUCT_ID 0x5052 /* no EEPROM, no firmware */ 46 #define TI_5152_BOOT_PRODUCT_ID 0x5152 /* no EEPROM, no firmware */ 47 #define TI_5052_EEPROM_PRODUCT_ID 0x505A /* EEPROM, no firmware */ 48 #define TI_5052_FIRMWARE_PRODUCT_ID 0x505F /* firmware is running */ 49 #define FRI2_PRODUCT_ID 0x5053 /* Fish River Island II */ 50 51 /* Multi-Tech vendor and product ids */ 52 #define MTS_VENDOR_ID 0x06E0 53 #define MTS_GSM_NO_FW_PRODUCT_ID 0xF108 54 #define MTS_CDMA_NO_FW_PRODUCT_ID 0xF109 55 #define MTS_CDMA_PRODUCT_ID 0xF110 56 #define MTS_GSM_PRODUCT_ID 0xF111 57 #define MTS_EDGE_PRODUCT_ID 0xF112 58 #define MTS_MT9234MU_PRODUCT_ID 0xF114 59 #define MTS_MT9234ZBA_PRODUCT_ID 0xF115 60 #define MTS_MT9234ZBAOLD_PRODUCT_ID 0x0319 61 62 /* Abbott Diabetics vendor and product ids */ 63 #define ABBOTT_VENDOR_ID 0x1a61 64 #define ABBOTT_STEREO_PLUG_ID 0x3410 65 #define ABBOTT_PRODUCT_ID ABBOTT_STEREO_PLUG_ID 66 #define ABBOTT_STRIP_PORT_ID 0x3420 67 68 /* Honeywell vendor and product IDs */ 69 #define HONEYWELL_VENDOR_ID 0x10ac 70 #define HONEYWELL_HGI80_PRODUCT_ID 0x0102 /* Honeywell HGI80 */ 71 72 /* Moxa UPORT 11x0 vendor and product IDs */ 73 #define MXU1_VENDOR_ID 0x110a 74 #define MXU1_1110_PRODUCT_ID 0x1110 75 #define MXU1_1130_PRODUCT_ID 0x1130 76 #define MXU1_1150_PRODUCT_ID 0x1150 77 #define MXU1_1151_PRODUCT_ID 0x1151 78 #define MXU1_1131_PRODUCT_ID 0x1131 79 80 /* Commands */ 81 #define TI_GET_VERSION 0x01 82 #define TI_GET_PORT_STATUS 0x02 83 #define TI_GET_PORT_DEV_INFO 0x03 84 #define TI_GET_CONFIG 0x04 85 #define TI_SET_CONFIG 0x05 86 #define TI_OPEN_PORT 0x06 87 #define TI_CLOSE_PORT 0x07 88 #define TI_START_PORT 0x08 89 #define TI_STOP_PORT 0x09 90 #define TI_TEST_PORT 0x0A 91 #define TI_PURGE_PORT 0x0B 92 #define TI_RESET_EXT_DEVICE 0x0C 93 #define TI_WRITE_DATA 0x80 94 #define TI_READ_DATA 0x81 95 #define TI_REQ_TYPE_CLASS 0x82 96 97 /* Module identifiers */ 98 #define TI_I2C_PORT 0x01 99 #define TI_IEEE1284_PORT 0x02 100 #define TI_UART1_PORT 0x03 101 #define TI_UART2_PORT 0x04 102 #define TI_RAM_PORT 0x05 103 104 /* Modem status */ 105 #define TI_MSR_DELTA_CTS 0x01 106 #define TI_MSR_DELTA_DSR 0x02 107 #define TI_MSR_DELTA_RI 0x04 108 #define TI_MSR_DELTA_CD 0x08 109 #define TI_MSR_CTS 0x10 110 #define TI_MSR_DSR 0x20 111 #define TI_MSR_RI 0x40 112 #define TI_MSR_CD 0x80 113 #define TI_MSR_DELTA_MASK 0x0F 114 #define TI_MSR_MASK 0xF0 115 116 /* Line status */ 117 #define TI_LSR_OVERRUN_ERROR 0x01 118 #define TI_LSR_PARITY_ERROR 0x02 119 #define TI_LSR_FRAMING_ERROR 0x04 120 #define TI_LSR_BREAK 0x08 121 #define TI_LSR_ERROR 0x0F 122 #define TI_LSR_RX_FULL 0x10 123 #define TI_LSR_TX_EMPTY 0x20 124 #define TI_LSR_TX_EMPTY_BOTH 0x40 125 126 /* Line control */ 127 #define TI_LCR_BREAK 0x40 128 129 /* Modem control */ 130 #define TI_MCR_LOOP 0x04 131 #define TI_MCR_DTR 0x10 132 #define TI_MCR_RTS 0x20 133 134 /* Mask settings */ 135 #define TI_UART_ENABLE_RTS_IN 0x0001 136 #define TI_UART_DISABLE_RTS 0x0002 137 #define TI_UART_ENABLE_PARITY_CHECKING 0x0008 138 #define TI_UART_ENABLE_DSR_OUT 0x0010 139 #define TI_UART_ENABLE_CTS_OUT 0x0020 140 #define TI_UART_ENABLE_X_OUT 0x0040 141 #define TI_UART_ENABLE_XA_OUT 0x0080 142 #define TI_UART_ENABLE_X_IN 0x0100 143 #define TI_UART_ENABLE_DTR_IN 0x0800 144 #define TI_UART_DISABLE_DTR 0x1000 145 #define TI_UART_ENABLE_MS_INTS 0x2000 146 #define TI_UART_ENABLE_AUTO_START_DMA 0x4000 147 148 /* Parity */ 149 #define TI_UART_NO_PARITY 0x00 150 #define TI_UART_ODD_PARITY 0x01 151 #define TI_UART_EVEN_PARITY 0x02 152 #define TI_UART_MARK_PARITY 0x03 153 #define TI_UART_SPACE_PARITY 0x04 154 155 /* Stop bits */ 156 #define TI_UART_1_STOP_BITS 0x00 157 #define TI_UART_1_5_STOP_BITS 0x01 158 #define TI_UART_2_STOP_BITS 0x02 159 160 /* Bits per character */ 161 #define TI_UART_5_DATA_BITS 0x00 162 #define TI_UART_6_DATA_BITS 0x01 163 #define TI_UART_7_DATA_BITS 0x02 164 #define TI_UART_8_DATA_BITS 0x03 165 166 /* 232/485 modes */ 167 #define TI_UART_232 0x00 168 #define TI_UART_485_RECEIVER_DISABLED 0x01 169 #define TI_UART_485_RECEIVER_ENABLED 0x02 170 171 /* Pipe transfer mode and timeout */ 172 #define TI_PIPE_MODE_CONTINUOUS 0x01 173 #define TI_PIPE_MODE_MASK 0x03 174 #define TI_PIPE_TIMEOUT_MASK 0x7C 175 #define TI_PIPE_TIMEOUT_ENABLE 0x80 176 177 /* Config struct */ 178 struct ti_uart_config { 179 __be16 wBaudRate; 180 __be16 wFlags; 181 u8 bDataBits; 182 u8 bParity; 183 u8 bStopBits; 184 char cXon; 185 char cXoff; 186 u8 bUartMode; 187 }; 188 189 /* Get port status */ 190 struct ti_port_status { 191 u8 bCmdCode; 192 u8 bModuleId; 193 u8 bErrorCode; 194 u8 bMSR; 195 u8 bLSR; 196 }; 197 198 /* Purge modes */ 199 #define TI_PURGE_OUTPUT 0x00 200 #define TI_PURGE_INPUT 0x80 201 202 /* Read/Write data */ 203 #define TI_RW_DATA_ADDR_SFR 0x10 204 #define TI_RW_DATA_ADDR_IDATA 0x20 205 #define TI_RW_DATA_ADDR_XDATA 0x30 206 #define TI_RW_DATA_ADDR_CODE 0x40 207 #define TI_RW_DATA_ADDR_GPIO 0x50 208 #define TI_RW_DATA_ADDR_I2C 0x60 209 #define TI_RW_DATA_ADDR_FLASH 0x70 210 #define TI_RW_DATA_ADDR_DSP 0x80 211 212 #define TI_RW_DATA_UNSPECIFIED 0x00 213 #define TI_RW_DATA_BYTE 0x01 214 #define TI_RW_DATA_WORD 0x02 215 #define TI_RW_DATA_DOUBLE_WORD 0x04 216 217 struct ti_write_data_bytes { 218 u8 bAddrType; 219 u8 bDataType; 220 u8 bDataCounter; 221 __be16 wBaseAddrHi; 222 __be16 wBaseAddrLo; 223 u8 bData[]; 224 } __packed; 225 226 struct ti_read_data_request { 227 u8 bAddrType; 228 u8 bDataType; 229 u8 bDataCounter; 230 __be16 wBaseAddrHi; 231 __be16 wBaseAddrLo; 232 } __packed; 233 234 struct ti_read_data_bytes { 235 u8 bCmdCode; 236 u8 bModuleId; 237 u8 bErrorCode; 238 u8 bData[]; 239 }; 240 241 /* Interrupt struct */ 242 struct ti_interrupt { 243 u8 bICode; 244 u8 bIInfo; 245 }; 246 247 /* Interrupt codes */ 248 #define TI_CODE_HARDWARE_ERROR 0xFF 249 #define TI_CODE_DATA_ERROR 0x03 250 #define TI_CODE_MODEM_STATUS 0x04 251 252 /* Download firmware max packet size */ 253 #define TI_DOWNLOAD_MAX_PACKET_SIZE 64 254 255 /* Firmware image header */ 256 struct ti_firmware_header { 257 __le16 wLength; 258 u8 bCheckSum; 259 } __packed; 260 261 /* UART addresses */ 262 #define TI_UART1_BASE_ADDR 0xFFA0 /* UART 1 base address */ 263 #define TI_UART2_BASE_ADDR 0xFFB0 /* UART 2 base address */ 264 #define TI_UART_OFFSET_LCR 0x0002 /* UART MCR register offset */ 265 #define TI_UART_OFFSET_MCR 0x0004 /* UART MCR register offset */ 266 267 #define TI_DRIVER_AUTHOR "Al Borchers <alborchers@steinerpoint.com>" 268 #define TI_DRIVER_DESC "TI USB 3410/5052 Serial Driver" 269 270 #define TI_FIRMWARE_BUF_SIZE 16284 271 272 #define TI_TRANSFER_TIMEOUT 2 273 274 /* read urb states */ 275 #define TI_READ_URB_RUNNING 0 276 #define TI_READ_URB_STOPPING 1 277 #define TI_READ_URB_STOPPED 2 278 279 #define TI_EXTRA_VID_PID_COUNT 5 280 281 struct ti_port { 282 int tp_is_open; 283 u8 tp_msr; 284 u8 tp_shadow_mcr; 285 u8 tp_uart_mode; /* 232 or 485 modes */ 286 unsigned int tp_uart_base_addr; 287 struct ti_device *tp_tdev; 288 struct usb_serial_port *tp_port; 289 spinlock_t tp_lock; 290 int tp_read_urb_state; 291 int tp_write_urb_in_use; 292 }; 293 294 struct ti_device { 295 struct mutex td_open_close_lock; 296 int td_open_port_count; 297 struct usb_serial *td_serial; 298 int td_is_3410; 299 bool td_rs485_only; 300 }; 301 302 static int ti_startup(struct usb_serial *serial); 303 static void ti_release(struct usb_serial *serial); 304 static int ti_port_probe(struct usb_serial_port *port); 305 static void ti_port_remove(struct usb_serial_port *port); 306 static int ti_open(struct tty_struct *tty, struct usb_serial_port *port); 307 static void ti_close(struct usb_serial_port *port); 308 static int ti_write(struct tty_struct *tty, struct usb_serial_port *port, 309 const unsigned char *data, int count); 310 static int ti_write_room(struct tty_struct *tty); 311 static int ti_chars_in_buffer(struct tty_struct *tty); 312 static bool ti_tx_empty(struct usb_serial_port *port); 313 static void ti_throttle(struct tty_struct *tty); 314 static void ti_unthrottle(struct tty_struct *tty); 315 static void ti_set_termios(struct tty_struct *tty, 316 struct usb_serial_port *port, struct ktermios *old_termios); 317 static int ti_tiocmget(struct tty_struct *tty); 318 static int ti_tiocmset(struct tty_struct *tty, 319 unsigned int set, unsigned int clear); 320 static void ti_break(struct tty_struct *tty, int break_state); 321 static void ti_interrupt_callback(struct urb *urb); 322 static void ti_bulk_in_callback(struct urb *urb); 323 static void ti_bulk_out_callback(struct urb *urb); 324 325 static void ti_recv(struct usb_serial_port *port, unsigned char *data, 326 int length); 327 static void ti_send(struct ti_port *tport); 328 static int ti_set_mcr(struct ti_port *tport, unsigned int mcr); 329 static int ti_get_lsr(struct ti_port *tport, u8 *lsr); 330 static void ti_get_serial_info(struct tty_struct *tty, struct serial_struct *ss); 331 static void ti_handle_new_msr(struct ti_port *tport, u8 msr); 332 333 static void ti_stop_read(struct ti_port *tport, struct tty_struct *tty); 334 static int ti_restart_read(struct ti_port *tport, struct tty_struct *tty); 335 336 static int ti_command_out_sync(struct usb_device *udev, u8 command, 337 u16 moduleid, u16 value, void *data, int size); 338 static int ti_command_in_sync(struct usb_device *udev, u8 command, 339 u16 moduleid, u16 value, void *data, int size); 340 static int ti_port_cmd_out(struct usb_serial_port *port, u8 command, 341 u16 value, void *data, int size); 342 static int ti_port_cmd_in(struct usb_serial_port *port, u8 command, 343 u16 value, void *data, int size); 344 345 static int ti_write_byte(struct usb_serial_port *port, struct ti_device *tdev, 346 unsigned long addr, u8 mask, u8 byte); 347 348 static int ti_download_firmware(struct ti_device *tdev); 349 350 static const struct usb_device_id ti_id_table_3410[] = { 351 { USB_DEVICE(TI_VENDOR_ID, TI_3410_PRODUCT_ID) }, 352 { USB_DEVICE(TI_VENDOR_ID, TI_3410_EZ430_ID) }, 353 { USB_DEVICE(MTS_VENDOR_ID, MTS_GSM_NO_FW_PRODUCT_ID) }, 354 { USB_DEVICE(MTS_VENDOR_ID, MTS_CDMA_NO_FW_PRODUCT_ID) }, 355 { USB_DEVICE(MTS_VENDOR_ID, MTS_CDMA_PRODUCT_ID) }, 356 { USB_DEVICE(MTS_VENDOR_ID, MTS_GSM_PRODUCT_ID) }, 357 { USB_DEVICE(MTS_VENDOR_ID, MTS_EDGE_PRODUCT_ID) }, 358 { USB_DEVICE(MTS_VENDOR_ID, MTS_MT9234MU_PRODUCT_ID) }, 359 { USB_DEVICE(MTS_VENDOR_ID, MTS_MT9234ZBA_PRODUCT_ID) }, 360 { USB_DEVICE(MTS_VENDOR_ID, MTS_MT9234ZBAOLD_PRODUCT_ID) }, 361 { USB_DEVICE(IBM_VENDOR_ID, IBM_4543_PRODUCT_ID) }, 362 { USB_DEVICE(IBM_VENDOR_ID, IBM_454B_PRODUCT_ID) }, 363 { USB_DEVICE(IBM_VENDOR_ID, IBM_454C_PRODUCT_ID) }, 364 { USB_DEVICE(ABBOTT_VENDOR_ID, ABBOTT_STEREO_PLUG_ID) }, 365 { USB_DEVICE(ABBOTT_VENDOR_ID, ABBOTT_STRIP_PORT_ID) }, 366 { USB_DEVICE(TI_VENDOR_ID, FRI2_PRODUCT_ID) }, 367 { USB_DEVICE(HONEYWELL_VENDOR_ID, HONEYWELL_HGI80_PRODUCT_ID) }, 368 { USB_DEVICE(MXU1_VENDOR_ID, MXU1_1110_PRODUCT_ID) }, 369 { USB_DEVICE(MXU1_VENDOR_ID, MXU1_1130_PRODUCT_ID) }, 370 { USB_DEVICE(MXU1_VENDOR_ID, MXU1_1131_PRODUCT_ID) }, 371 { USB_DEVICE(MXU1_VENDOR_ID, MXU1_1150_PRODUCT_ID) }, 372 { USB_DEVICE(MXU1_VENDOR_ID, MXU1_1151_PRODUCT_ID) }, 373 { } /* terminator */ 374 }; 375 376 static const struct usb_device_id ti_id_table_5052[] = { 377 { USB_DEVICE(TI_VENDOR_ID, TI_5052_BOOT_PRODUCT_ID) }, 378 { USB_DEVICE(TI_VENDOR_ID, TI_5152_BOOT_PRODUCT_ID) }, 379 { USB_DEVICE(TI_VENDOR_ID, TI_5052_EEPROM_PRODUCT_ID) }, 380 { USB_DEVICE(TI_VENDOR_ID, TI_5052_FIRMWARE_PRODUCT_ID) }, 381 { } 382 }; 383 384 static const struct usb_device_id ti_id_table_combined[] = { 385 { USB_DEVICE(TI_VENDOR_ID, TI_3410_PRODUCT_ID) }, 386 { USB_DEVICE(TI_VENDOR_ID, TI_3410_EZ430_ID) }, 387 { USB_DEVICE(MTS_VENDOR_ID, MTS_GSM_NO_FW_PRODUCT_ID) }, 388 { USB_DEVICE(MTS_VENDOR_ID, MTS_CDMA_NO_FW_PRODUCT_ID) }, 389 { USB_DEVICE(MTS_VENDOR_ID, MTS_CDMA_PRODUCT_ID) }, 390 { USB_DEVICE(MTS_VENDOR_ID, MTS_GSM_PRODUCT_ID) }, 391 { USB_DEVICE(MTS_VENDOR_ID, MTS_EDGE_PRODUCT_ID) }, 392 { USB_DEVICE(MTS_VENDOR_ID, MTS_MT9234MU_PRODUCT_ID) }, 393 { USB_DEVICE(MTS_VENDOR_ID, MTS_MT9234ZBA_PRODUCT_ID) }, 394 { USB_DEVICE(MTS_VENDOR_ID, MTS_MT9234ZBAOLD_PRODUCT_ID) }, 395 { USB_DEVICE(TI_VENDOR_ID, TI_5052_BOOT_PRODUCT_ID) }, 396 { USB_DEVICE(TI_VENDOR_ID, TI_5152_BOOT_PRODUCT_ID) }, 397 { USB_DEVICE(TI_VENDOR_ID, TI_5052_EEPROM_PRODUCT_ID) }, 398 { USB_DEVICE(TI_VENDOR_ID, TI_5052_FIRMWARE_PRODUCT_ID) }, 399 { USB_DEVICE(IBM_VENDOR_ID, IBM_4543_PRODUCT_ID) }, 400 { USB_DEVICE(IBM_VENDOR_ID, IBM_454B_PRODUCT_ID) }, 401 { USB_DEVICE(IBM_VENDOR_ID, IBM_454C_PRODUCT_ID) }, 402 { USB_DEVICE(ABBOTT_VENDOR_ID, ABBOTT_PRODUCT_ID) }, 403 { USB_DEVICE(ABBOTT_VENDOR_ID, ABBOTT_STRIP_PORT_ID) }, 404 { USB_DEVICE(TI_VENDOR_ID, FRI2_PRODUCT_ID) }, 405 { USB_DEVICE(HONEYWELL_VENDOR_ID, HONEYWELL_HGI80_PRODUCT_ID) }, 406 { USB_DEVICE(MXU1_VENDOR_ID, MXU1_1110_PRODUCT_ID) }, 407 { USB_DEVICE(MXU1_VENDOR_ID, MXU1_1130_PRODUCT_ID) }, 408 { USB_DEVICE(MXU1_VENDOR_ID, MXU1_1131_PRODUCT_ID) }, 409 { USB_DEVICE(MXU1_VENDOR_ID, MXU1_1150_PRODUCT_ID) }, 410 { USB_DEVICE(MXU1_VENDOR_ID, MXU1_1151_PRODUCT_ID) }, 411 { } /* terminator */ 412 }; 413 414 static struct usb_serial_driver ti_1port_device = { 415 .driver = { 416 .owner = THIS_MODULE, 417 .name = "ti_usb_3410_5052_1", 418 }, 419 .description = "TI USB 3410 1 port adapter", 420 .id_table = ti_id_table_3410, 421 .num_ports = 1, 422 .num_bulk_out = 1, 423 .attach = ti_startup, 424 .release = ti_release, 425 .port_probe = ti_port_probe, 426 .port_remove = ti_port_remove, 427 .open = ti_open, 428 .close = ti_close, 429 .write = ti_write, 430 .write_room = ti_write_room, 431 .chars_in_buffer = ti_chars_in_buffer, 432 .tx_empty = ti_tx_empty, 433 .throttle = ti_throttle, 434 .unthrottle = ti_unthrottle, 435 .get_serial = ti_get_serial_info, 436 .set_termios = ti_set_termios, 437 .tiocmget = ti_tiocmget, 438 .tiocmset = ti_tiocmset, 439 .tiocmiwait = usb_serial_generic_tiocmiwait, 440 .get_icount = usb_serial_generic_get_icount, 441 .break_ctl = ti_break, 442 .read_int_callback = ti_interrupt_callback, 443 .read_bulk_callback = ti_bulk_in_callback, 444 .write_bulk_callback = ti_bulk_out_callback, 445 }; 446 447 static struct usb_serial_driver ti_2port_device = { 448 .driver = { 449 .owner = THIS_MODULE, 450 .name = "ti_usb_3410_5052_2", 451 }, 452 .description = "TI USB 5052 2 port adapter", 453 .id_table = ti_id_table_5052, 454 .num_ports = 2, 455 .num_bulk_out = 1, 456 .attach = ti_startup, 457 .release = ti_release, 458 .port_probe = ti_port_probe, 459 .port_remove = ti_port_remove, 460 .open = ti_open, 461 .close = ti_close, 462 .write = ti_write, 463 .write_room = ti_write_room, 464 .chars_in_buffer = ti_chars_in_buffer, 465 .tx_empty = ti_tx_empty, 466 .throttle = ti_throttle, 467 .unthrottle = ti_unthrottle, 468 .get_serial = ti_get_serial_info, 469 .set_termios = ti_set_termios, 470 .tiocmget = ti_tiocmget, 471 .tiocmset = ti_tiocmset, 472 .tiocmiwait = usb_serial_generic_tiocmiwait, 473 .get_icount = usb_serial_generic_get_icount, 474 .break_ctl = ti_break, 475 .read_int_callback = ti_interrupt_callback, 476 .read_bulk_callback = ti_bulk_in_callback, 477 .write_bulk_callback = ti_bulk_out_callback, 478 }; 479 480 static struct usb_serial_driver * const serial_drivers[] = { 481 &ti_1port_device, &ti_2port_device, NULL 482 }; 483 484 MODULE_AUTHOR(TI_DRIVER_AUTHOR); 485 MODULE_DESCRIPTION(TI_DRIVER_DESC); 486 MODULE_LICENSE("GPL"); 487 488 MODULE_FIRMWARE("ti_3410.fw"); 489 MODULE_FIRMWARE("ti_5052.fw"); 490 MODULE_FIRMWARE("mts_cdma.fw"); 491 MODULE_FIRMWARE("mts_gsm.fw"); 492 MODULE_FIRMWARE("mts_edge.fw"); 493 MODULE_FIRMWARE("mts_mt9234mu.fw"); 494 MODULE_FIRMWARE("mts_mt9234zba.fw"); 495 MODULE_FIRMWARE("moxa/moxa-1110.fw"); 496 MODULE_FIRMWARE("moxa/moxa-1130.fw"); 497 MODULE_FIRMWARE("moxa/moxa-1131.fw"); 498 MODULE_FIRMWARE("moxa/moxa-1150.fw"); 499 MODULE_FIRMWARE("moxa/moxa-1151.fw"); 500 501 MODULE_DEVICE_TABLE(usb, ti_id_table_combined); 502 503 module_usb_serial_driver(serial_drivers, ti_id_table_combined); 504 505 static int ti_startup(struct usb_serial *serial) 506 { 507 struct ti_device *tdev; 508 struct usb_device *dev = serial->dev; 509 struct usb_host_interface *cur_altsetting; 510 int num_endpoints; 511 u16 vid, pid; 512 int status; 513 514 dev_dbg(&dev->dev, 515 "%s - product 0x%4X, num configurations %d, configuration value %d\n", 516 __func__, le16_to_cpu(dev->descriptor.idProduct), 517 dev->descriptor.bNumConfigurations, 518 dev->actconfig->desc.bConfigurationValue); 519 520 tdev = kzalloc(sizeof(struct ti_device), GFP_KERNEL); 521 if (!tdev) 522 return -ENOMEM; 523 524 mutex_init(&tdev->td_open_close_lock); 525 tdev->td_serial = serial; 526 usb_set_serial_data(serial, tdev); 527 528 /* determine device type */ 529 if (serial->type == &ti_1port_device) 530 tdev->td_is_3410 = 1; 531 dev_dbg(&dev->dev, "%s - device type is %s\n", __func__, 532 tdev->td_is_3410 ? "3410" : "5052"); 533 534 vid = le16_to_cpu(dev->descriptor.idVendor); 535 pid = le16_to_cpu(dev->descriptor.idProduct); 536 if (vid == MXU1_VENDOR_ID) { 537 switch (pid) { 538 case MXU1_1130_PRODUCT_ID: 539 case MXU1_1131_PRODUCT_ID: 540 tdev->td_rs485_only = true; 541 break; 542 } 543 } 544 545 cur_altsetting = serial->interface->cur_altsetting; 546 num_endpoints = cur_altsetting->desc.bNumEndpoints; 547 548 /* if we have only 1 configuration and 1 endpoint, download firmware */ 549 if (dev->descriptor.bNumConfigurations == 1 && num_endpoints == 1) { 550 status = ti_download_firmware(tdev); 551 552 if (status != 0) 553 goto free_tdev; 554 555 /* 3410 must be reset, 5052 resets itself */ 556 if (tdev->td_is_3410) { 557 msleep_interruptible(100); 558 usb_reset_device(dev); 559 } 560 561 status = -ENODEV; 562 goto free_tdev; 563 } 564 565 /* the second configuration must be set */ 566 if (dev->actconfig->desc.bConfigurationValue == TI_BOOT_CONFIG) { 567 status = usb_driver_set_configuration(dev, TI_ACTIVE_CONFIG); 568 status = status ? status : -ENODEV; 569 goto free_tdev; 570 } 571 572 if (serial->num_bulk_in < serial->num_ports || 573 serial->num_bulk_out < serial->num_ports) { 574 dev_err(&serial->interface->dev, "missing endpoints\n"); 575 status = -ENODEV; 576 goto free_tdev; 577 } 578 579 return 0; 580 581 free_tdev: 582 kfree(tdev); 583 usb_set_serial_data(serial, NULL); 584 return status; 585 } 586 587 588 static void ti_release(struct usb_serial *serial) 589 { 590 struct ti_device *tdev = usb_get_serial_data(serial); 591 592 kfree(tdev); 593 } 594 595 static int ti_port_probe(struct usb_serial_port *port) 596 { 597 struct ti_port *tport; 598 599 tport = kzalloc(sizeof(*tport), GFP_KERNEL); 600 if (!tport) 601 return -ENOMEM; 602 603 spin_lock_init(&tport->tp_lock); 604 if (port == port->serial->port[0]) 605 tport->tp_uart_base_addr = TI_UART1_BASE_ADDR; 606 else 607 tport->tp_uart_base_addr = TI_UART2_BASE_ADDR; 608 tport->tp_port = port; 609 tport->tp_tdev = usb_get_serial_data(port->serial); 610 611 if (tport->tp_tdev->td_rs485_only) 612 tport->tp_uart_mode = TI_UART_485_RECEIVER_DISABLED; 613 else 614 tport->tp_uart_mode = TI_UART_232; 615 616 usb_set_serial_port_data(port, tport); 617 618 /* 619 * The TUSB5052 LSR does not tell when the transmitter shift register 620 * has emptied so add a one-character drain delay. 621 */ 622 if (!tport->tp_tdev->td_is_3410) 623 port->port.drain_delay = 1; 624 625 return 0; 626 } 627 628 static void ti_port_remove(struct usb_serial_port *port) 629 { 630 struct ti_port *tport; 631 632 tport = usb_get_serial_port_data(port); 633 kfree(tport); 634 } 635 636 static int ti_open(struct tty_struct *tty, struct usb_serial_port *port) 637 { 638 struct ti_port *tport = usb_get_serial_port_data(port); 639 struct ti_device *tdev; 640 struct usb_device *dev; 641 struct urb *urb; 642 int status; 643 u16 open_settings; 644 645 open_settings = (TI_PIPE_MODE_CONTINUOUS | 646 TI_PIPE_TIMEOUT_ENABLE | 647 (TI_TRANSFER_TIMEOUT << 2)); 648 649 dev = port->serial->dev; 650 tdev = tport->tp_tdev; 651 652 /* only one open on any port on a device at a time */ 653 if (mutex_lock_interruptible(&tdev->td_open_close_lock)) 654 return -ERESTARTSYS; 655 656 tport->tp_msr = 0; 657 tport->tp_shadow_mcr |= (TI_MCR_RTS | TI_MCR_DTR); 658 659 /* start interrupt urb the first time a port is opened on this device */ 660 if (tdev->td_open_port_count == 0) { 661 dev_dbg(&port->dev, "%s - start interrupt in urb\n", __func__); 662 urb = tdev->td_serial->port[0]->interrupt_in_urb; 663 if (!urb) { 664 dev_err(&port->dev, "%s - no interrupt urb\n", __func__); 665 status = -EINVAL; 666 goto release_lock; 667 } 668 urb->context = tdev; 669 status = usb_submit_urb(urb, GFP_KERNEL); 670 if (status) { 671 dev_err(&port->dev, "%s - submit interrupt urb failed, %d\n", __func__, status); 672 goto release_lock; 673 } 674 } 675 676 if (tty) 677 ti_set_termios(tty, port, &tty->termios); 678 679 status = ti_port_cmd_out(port, TI_OPEN_PORT, open_settings, NULL, 0); 680 if (status) { 681 dev_err(&port->dev, "%s - cannot send open command, %d\n", 682 __func__, status); 683 goto unlink_int_urb; 684 } 685 686 status = ti_port_cmd_out(port, TI_START_PORT, 0, NULL, 0); 687 if (status) { 688 dev_err(&port->dev, "%s - cannot send start command, %d\n", 689 __func__, status); 690 goto unlink_int_urb; 691 } 692 693 status = ti_port_cmd_out(port, TI_PURGE_PORT, TI_PURGE_INPUT, NULL, 0); 694 if (status) { 695 dev_err(&port->dev, "%s - cannot clear input buffers, %d\n", 696 __func__, status); 697 goto unlink_int_urb; 698 } 699 status = ti_port_cmd_out(port, TI_PURGE_PORT, TI_PURGE_OUTPUT, NULL, 0); 700 if (status) { 701 dev_err(&port->dev, "%s - cannot clear output buffers, %d\n", 702 __func__, status); 703 goto unlink_int_urb; 704 } 705 706 /* reset the data toggle on the bulk endpoints to work around bug in 707 * host controllers where things get out of sync some times */ 708 usb_clear_halt(dev, port->write_urb->pipe); 709 usb_clear_halt(dev, port->read_urb->pipe); 710 711 if (tty) 712 ti_set_termios(tty, port, &tty->termios); 713 714 status = ti_port_cmd_out(port, TI_OPEN_PORT, open_settings, NULL, 0); 715 if (status) { 716 dev_err(&port->dev, "%s - cannot send open command (2), %d\n", 717 __func__, status); 718 goto unlink_int_urb; 719 } 720 721 status = ti_port_cmd_out(port, TI_START_PORT, 0, NULL, 0); 722 if (status) { 723 dev_err(&port->dev, "%s - cannot send start command (2), %d\n", 724 __func__, status); 725 goto unlink_int_urb; 726 } 727 728 /* start read urb */ 729 urb = port->read_urb; 730 if (!urb) { 731 dev_err(&port->dev, "%s - no read urb\n", __func__); 732 status = -EINVAL; 733 goto unlink_int_urb; 734 } 735 tport->tp_read_urb_state = TI_READ_URB_RUNNING; 736 urb->context = tport; 737 status = usb_submit_urb(urb, GFP_KERNEL); 738 if (status) { 739 dev_err(&port->dev, "%s - submit read urb failed, %d\n", 740 __func__, status); 741 goto unlink_int_urb; 742 } 743 744 tport->tp_is_open = 1; 745 ++tdev->td_open_port_count; 746 747 goto release_lock; 748 749 unlink_int_urb: 750 if (tdev->td_open_port_count == 0) 751 usb_kill_urb(port->serial->port[0]->interrupt_in_urb); 752 release_lock: 753 mutex_unlock(&tdev->td_open_close_lock); 754 return status; 755 } 756 757 758 static void ti_close(struct usb_serial_port *port) 759 { 760 struct ti_device *tdev; 761 struct ti_port *tport; 762 int status; 763 unsigned long flags; 764 765 tdev = usb_get_serial_data(port->serial); 766 tport = usb_get_serial_port_data(port); 767 768 tport->tp_is_open = 0; 769 770 usb_kill_urb(port->read_urb); 771 usb_kill_urb(port->write_urb); 772 tport->tp_write_urb_in_use = 0; 773 spin_lock_irqsave(&tport->tp_lock, flags); 774 kfifo_reset_out(&port->write_fifo); 775 spin_unlock_irqrestore(&tport->tp_lock, flags); 776 777 status = ti_port_cmd_out(port, TI_CLOSE_PORT, 0, NULL, 0); 778 if (status) 779 dev_err(&port->dev, 780 "%s - cannot send close port command, %d\n" 781 , __func__, status); 782 783 mutex_lock(&tdev->td_open_close_lock); 784 --tdev->td_open_port_count; 785 if (tdev->td_open_port_count == 0) { 786 /* last port is closed, shut down interrupt urb */ 787 usb_kill_urb(port->serial->port[0]->interrupt_in_urb); 788 } 789 mutex_unlock(&tdev->td_open_close_lock); 790 } 791 792 793 static int ti_write(struct tty_struct *tty, struct usb_serial_port *port, 794 const unsigned char *data, int count) 795 { 796 struct ti_port *tport = usb_get_serial_port_data(port); 797 798 if (count == 0) { 799 return 0; 800 } 801 802 if (!tport->tp_is_open) 803 return -ENODEV; 804 805 count = kfifo_in_locked(&port->write_fifo, data, count, 806 &tport->tp_lock); 807 ti_send(tport); 808 809 return count; 810 } 811 812 813 static int ti_write_room(struct tty_struct *tty) 814 { 815 struct usb_serial_port *port = tty->driver_data; 816 struct ti_port *tport = usb_get_serial_port_data(port); 817 int room = 0; 818 unsigned long flags; 819 820 spin_lock_irqsave(&tport->tp_lock, flags); 821 room = kfifo_avail(&port->write_fifo); 822 spin_unlock_irqrestore(&tport->tp_lock, flags); 823 824 dev_dbg(&port->dev, "%s - returns %d\n", __func__, room); 825 return room; 826 } 827 828 829 static int ti_chars_in_buffer(struct tty_struct *tty) 830 { 831 struct usb_serial_port *port = tty->driver_data; 832 struct ti_port *tport = usb_get_serial_port_data(port); 833 int chars = 0; 834 unsigned long flags; 835 836 spin_lock_irqsave(&tport->tp_lock, flags); 837 chars = kfifo_len(&port->write_fifo); 838 spin_unlock_irqrestore(&tport->tp_lock, flags); 839 840 dev_dbg(&port->dev, "%s - returns %d\n", __func__, chars); 841 return chars; 842 } 843 844 static bool ti_tx_empty(struct usb_serial_port *port) 845 { 846 struct ti_port *tport = usb_get_serial_port_data(port); 847 u8 lsr, mask; 848 int ret; 849 850 /* 851 * TUSB5052 does not have the TEMT bit to tell if the shift register 852 * is empty. 853 */ 854 if (tport->tp_tdev->td_is_3410) 855 mask = TI_LSR_TX_EMPTY_BOTH; 856 else 857 mask = TI_LSR_TX_EMPTY; 858 859 ret = ti_get_lsr(tport, &lsr); 860 if (!ret && !(lsr & mask)) 861 return false; 862 863 return true; 864 } 865 866 static void ti_throttle(struct tty_struct *tty) 867 { 868 struct usb_serial_port *port = tty->driver_data; 869 struct ti_port *tport = usb_get_serial_port_data(port); 870 871 if (I_IXOFF(tty) || C_CRTSCTS(tty)) 872 ti_stop_read(tport, tty); 873 874 } 875 876 877 static void ti_unthrottle(struct tty_struct *tty) 878 { 879 struct usb_serial_port *port = tty->driver_data; 880 struct ti_port *tport = usb_get_serial_port_data(port); 881 int status; 882 883 if (I_IXOFF(tty) || C_CRTSCTS(tty)) { 884 status = ti_restart_read(tport, tty); 885 if (status) 886 dev_err(&port->dev, "%s - cannot restart read, %d\n", 887 __func__, status); 888 } 889 } 890 891 static void ti_set_termios(struct tty_struct *tty, 892 struct usb_serial_port *port, struct ktermios *old_termios) 893 { 894 struct ti_port *tport = usb_get_serial_port_data(port); 895 struct ti_uart_config *config; 896 int baud; 897 int status; 898 unsigned int mcr; 899 u16 wbaudrate; 900 u16 wflags = 0; 901 902 config = kmalloc(sizeof(*config), GFP_KERNEL); 903 if (!config) 904 return; 905 906 /* these flags must be set */ 907 wflags |= TI_UART_ENABLE_MS_INTS; 908 wflags |= TI_UART_ENABLE_AUTO_START_DMA; 909 config->bUartMode = tport->tp_uart_mode; 910 911 switch (C_CSIZE(tty)) { 912 case CS5: 913 config->bDataBits = TI_UART_5_DATA_BITS; 914 break; 915 case CS6: 916 config->bDataBits = TI_UART_6_DATA_BITS; 917 break; 918 case CS7: 919 config->bDataBits = TI_UART_7_DATA_BITS; 920 break; 921 default: 922 case CS8: 923 config->bDataBits = TI_UART_8_DATA_BITS; 924 break; 925 } 926 927 /* CMSPAR isn't supported by this driver */ 928 tty->termios.c_cflag &= ~CMSPAR; 929 930 if (C_PARENB(tty)) { 931 if (C_PARODD(tty)) { 932 wflags |= TI_UART_ENABLE_PARITY_CHECKING; 933 config->bParity = TI_UART_ODD_PARITY; 934 } else { 935 wflags |= TI_UART_ENABLE_PARITY_CHECKING; 936 config->bParity = TI_UART_EVEN_PARITY; 937 } 938 } else { 939 wflags &= ~TI_UART_ENABLE_PARITY_CHECKING; 940 config->bParity = TI_UART_NO_PARITY; 941 } 942 943 if (C_CSTOPB(tty)) 944 config->bStopBits = TI_UART_2_STOP_BITS; 945 else 946 config->bStopBits = TI_UART_1_STOP_BITS; 947 948 if (C_CRTSCTS(tty)) { 949 /* RTS flow control must be off to drop RTS for baud rate B0 */ 950 if ((C_BAUD(tty)) != B0) 951 wflags |= TI_UART_ENABLE_RTS_IN; 952 wflags |= TI_UART_ENABLE_CTS_OUT; 953 } else { 954 ti_restart_read(tport, tty); 955 } 956 957 if (I_IXOFF(tty) || I_IXON(tty)) { 958 config->cXon = START_CHAR(tty); 959 config->cXoff = STOP_CHAR(tty); 960 961 if (I_IXOFF(tty)) 962 wflags |= TI_UART_ENABLE_X_IN; 963 else 964 ti_restart_read(tport, tty); 965 966 if (I_IXON(tty)) 967 wflags |= TI_UART_ENABLE_X_OUT; 968 } 969 970 baud = tty_get_baud_rate(tty); 971 if (!baud) 972 baud = 9600; 973 if (tport->tp_tdev->td_is_3410) 974 wbaudrate = (923077 + baud/2) / baud; 975 else 976 wbaudrate = (461538 + baud/2) / baud; 977 978 /* FIXME: Should calculate resulting baud here and report it back */ 979 if ((C_BAUD(tty)) != B0) 980 tty_encode_baud_rate(tty, baud, baud); 981 982 dev_dbg(&port->dev, 983 "%s - BaudRate=%d, wBaudRate=%d, wFlags=0x%04X, bDataBits=%d, bParity=%d, bStopBits=%d, cXon=%d, cXoff=%d, bUartMode=%d\n", 984 __func__, baud, wbaudrate, wflags, 985 config->bDataBits, config->bParity, config->bStopBits, 986 config->cXon, config->cXoff, config->bUartMode); 987 988 config->wBaudRate = cpu_to_be16(wbaudrate); 989 config->wFlags = cpu_to_be16(wflags); 990 991 status = ti_port_cmd_out(port, TI_SET_CONFIG, 0, config, 992 sizeof(*config)); 993 if (status) 994 dev_err(&port->dev, "%s - cannot set config on port %d, %d\n", 995 __func__, port->port_number, status); 996 997 /* SET_CONFIG asserts RTS and DTR, reset them correctly */ 998 mcr = tport->tp_shadow_mcr; 999 /* if baud rate is B0, clear RTS and DTR */ 1000 if (C_BAUD(tty) == B0) 1001 mcr &= ~(TI_MCR_DTR | TI_MCR_RTS); 1002 status = ti_set_mcr(tport, mcr); 1003 if (status) 1004 dev_err(&port->dev, "%s - cannot set modem control on port %d, %d\n", 1005 __func__, port->port_number, status); 1006 1007 kfree(config); 1008 } 1009 1010 1011 static int ti_tiocmget(struct tty_struct *tty) 1012 { 1013 struct usb_serial_port *port = tty->driver_data; 1014 struct ti_port *tport = usb_get_serial_port_data(port); 1015 unsigned int result; 1016 unsigned int msr; 1017 unsigned int mcr; 1018 unsigned long flags; 1019 1020 spin_lock_irqsave(&tport->tp_lock, flags); 1021 msr = tport->tp_msr; 1022 mcr = tport->tp_shadow_mcr; 1023 spin_unlock_irqrestore(&tport->tp_lock, flags); 1024 1025 result = ((mcr & TI_MCR_DTR) ? TIOCM_DTR : 0) 1026 | ((mcr & TI_MCR_RTS) ? TIOCM_RTS : 0) 1027 | ((mcr & TI_MCR_LOOP) ? TIOCM_LOOP : 0) 1028 | ((msr & TI_MSR_CTS) ? TIOCM_CTS : 0) 1029 | ((msr & TI_MSR_CD) ? TIOCM_CAR : 0) 1030 | ((msr & TI_MSR_RI) ? TIOCM_RI : 0) 1031 | ((msr & TI_MSR_DSR) ? TIOCM_DSR : 0); 1032 1033 dev_dbg(&port->dev, "%s - 0x%04X\n", __func__, result); 1034 1035 return result; 1036 } 1037 1038 1039 static int ti_tiocmset(struct tty_struct *tty, 1040 unsigned int set, unsigned int clear) 1041 { 1042 struct usb_serial_port *port = tty->driver_data; 1043 struct ti_port *tport = usb_get_serial_port_data(port); 1044 unsigned int mcr; 1045 unsigned long flags; 1046 1047 spin_lock_irqsave(&tport->tp_lock, flags); 1048 mcr = tport->tp_shadow_mcr; 1049 1050 if (set & TIOCM_RTS) 1051 mcr |= TI_MCR_RTS; 1052 if (set & TIOCM_DTR) 1053 mcr |= TI_MCR_DTR; 1054 if (set & TIOCM_LOOP) 1055 mcr |= TI_MCR_LOOP; 1056 1057 if (clear & TIOCM_RTS) 1058 mcr &= ~TI_MCR_RTS; 1059 if (clear & TIOCM_DTR) 1060 mcr &= ~TI_MCR_DTR; 1061 if (clear & TIOCM_LOOP) 1062 mcr &= ~TI_MCR_LOOP; 1063 spin_unlock_irqrestore(&tport->tp_lock, flags); 1064 1065 return ti_set_mcr(tport, mcr); 1066 } 1067 1068 1069 static void ti_break(struct tty_struct *tty, int break_state) 1070 { 1071 struct usb_serial_port *port = tty->driver_data; 1072 struct ti_port *tport = usb_get_serial_port_data(port); 1073 int status; 1074 1075 dev_dbg(&port->dev, "%s - state = %d\n", __func__, break_state); 1076 1077 status = ti_write_byte(port, tport->tp_tdev, 1078 tport->tp_uart_base_addr + TI_UART_OFFSET_LCR, 1079 TI_LCR_BREAK, break_state == -1 ? TI_LCR_BREAK : 0); 1080 1081 if (status) 1082 dev_dbg(&port->dev, "%s - error setting break, %d\n", __func__, status); 1083 } 1084 1085 static int ti_get_port_from_code(unsigned char code) 1086 { 1087 return (code >> 6) & 0x01; 1088 } 1089 1090 static int ti_get_func_from_code(unsigned char code) 1091 { 1092 return code & 0x0f; 1093 } 1094 1095 static void ti_interrupt_callback(struct urb *urb) 1096 { 1097 struct ti_device *tdev = urb->context; 1098 struct usb_serial_port *port; 1099 struct usb_serial *serial = tdev->td_serial; 1100 struct ti_port *tport; 1101 struct device *dev = &urb->dev->dev; 1102 unsigned char *data = urb->transfer_buffer; 1103 int length = urb->actual_length; 1104 int port_number; 1105 int function; 1106 int status = urb->status; 1107 int retval; 1108 u8 msr; 1109 1110 switch (status) { 1111 case 0: 1112 break; 1113 case -ECONNRESET: 1114 case -ENOENT: 1115 case -ESHUTDOWN: 1116 dev_dbg(dev, "%s - urb shutting down, %d\n", __func__, status); 1117 return; 1118 default: 1119 dev_err(dev, "%s - nonzero urb status, %d\n", __func__, status); 1120 goto exit; 1121 } 1122 1123 if (length != 2) { 1124 dev_dbg(dev, "%s - bad packet size, %d\n", __func__, length); 1125 goto exit; 1126 } 1127 1128 if (data[0] == TI_CODE_HARDWARE_ERROR) { 1129 dev_err(dev, "%s - hardware error, %d\n", __func__, data[1]); 1130 goto exit; 1131 } 1132 1133 port_number = ti_get_port_from_code(data[0]); 1134 function = ti_get_func_from_code(data[0]); 1135 1136 dev_dbg(dev, "%s - port_number %d, function %d, data 0x%02X\n", 1137 __func__, port_number, function, data[1]); 1138 1139 if (port_number >= serial->num_ports) { 1140 dev_err(dev, "%s - bad port number, %d\n", 1141 __func__, port_number); 1142 goto exit; 1143 } 1144 1145 port = serial->port[port_number]; 1146 1147 tport = usb_get_serial_port_data(port); 1148 if (!tport) 1149 goto exit; 1150 1151 switch (function) { 1152 case TI_CODE_DATA_ERROR: 1153 dev_err(dev, "%s - DATA ERROR, port %d, data 0x%02X\n", 1154 __func__, port_number, data[1]); 1155 break; 1156 1157 case TI_CODE_MODEM_STATUS: 1158 msr = data[1]; 1159 dev_dbg(dev, "%s - port %d, msr 0x%02X\n", __func__, port_number, msr); 1160 ti_handle_new_msr(tport, msr); 1161 break; 1162 1163 default: 1164 dev_err(dev, "%s - unknown interrupt code, 0x%02X\n", 1165 __func__, data[1]); 1166 break; 1167 } 1168 1169 exit: 1170 retval = usb_submit_urb(urb, GFP_ATOMIC); 1171 if (retval) 1172 dev_err(dev, "%s - resubmit interrupt urb failed, %d\n", 1173 __func__, retval); 1174 } 1175 1176 1177 static void ti_bulk_in_callback(struct urb *urb) 1178 { 1179 struct ti_port *tport = urb->context; 1180 struct usb_serial_port *port = tport->tp_port; 1181 struct device *dev = &urb->dev->dev; 1182 int status = urb->status; 1183 unsigned long flags; 1184 int retval = 0; 1185 1186 switch (status) { 1187 case 0: 1188 break; 1189 case -ECONNRESET: 1190 case -ENOENT: 1191 case -ESHUTDOWN: 1192 dev_dbg(dev, "%s - urb shutting down, %d\n", __func__, status); 1193 return; 1194 default: 1195 dev_err(dev, "%s - nonzero urb status, %d\n", 1196 __func__, status); 1197 } 1198 1199 if (status == -EPIPE) 1200 goto exit; 1201 1202 if (status) { 1203 dev_err(dev, "%s - stopping read!\n", __func__); 1204 return; 1205 } 1206 1207 if (urb->actual_length) { 1208 usb_serial_debug_data(dev, __func__, urb->actual_length, 1209 urb->transfer_buffer); 1210 1211 if (!tport->tp_is_open) 1212 dev_dbg(dev, "%s - port closed, dropping data\n", 1213 __func__); 1214 else 1215 ti_recv(port, urb->transfer_buffer, urb->actual_length); 1216 spin_lock_irqsave(&tport->tp_lock, flags); 1217 port->icount.rx += urb->actual_length; 1218 spin_unlock_irqrestore(&tport->tp_lock, flags); 1219 } 1220 1221 exit: 1222 /* continue to read unless stopping */ 1223 spin_lock_irqsave(&tport->tp_lock, flags); 1224 if (tport->tp_read_urb_state == TI_READ_URB_RUNNING) 1225 retval = usb_submit_urb(urb, GFP_ATOMIC); 1226 else if (tport->tp_read_urb_state == TI_READ_URB_STOPPING) 1227 tport->tp_read_urb_state = TI_READ_URB_STOPPED; 1228 1229 spin_unlock_irqrestore(&tport->tp_lock, flags); 1230 if (retval) 1231 dev_err(dev, "%s - resubmit read urb failed, %d\n", 1232 __func__, retval); 1233 } 1234 1235 1236 static void ti_bulk_out_callback(struct urb *urb) 1237 { 1238 struct ti_port *tport = urb->context; 1239 struct usb_serial_port *port = tport->tp_port; 1240 int status = urb->status; 1241 1242 tport->tp_write_urb_in_use = 0; 1243 1244 switch (status) { 1245 case 0: 1246 break; 1247 case -ECONNRESET: 1248 case -ENOENT: 1249 case -ESHUTDOWN: 1250 dev_dbg(&port->dev, "%s - urb shutting down, %d\n", __func__, status); 1251 return; 1252 default: 1253 dev_err_console(port, "%s - nonzero urb status, %d\n", 1254 __func__, status); 1255 } 1256 1257 /* send any buffered data */ 1258 ti_send(tport); 1259 } 1260 1261 1262 static void ti_recv(struct usb_serial_port *port, unsigned char *data, 1263 int length) 1264 { 1265 int cnt; 1266 1267 do { 1268 cnt = tty_insert_flip_string(&port->port, data, length); 1269 if (cnt < length) { 1270 dev_err(&port->dev, "%s - dropping data, %d bytes lost\n", 1271 __func__, length - cnt); 1272 if (cnt == 0) 1273 break; 1274 } 1275 tty_flip_buffer_push(&port->port); 1276 data += cnt; 1277 length -= cnt; 1278 } while (length > 0); 1279 } 1280 1281 1282 static void ti_send(struct ti_port *tport) 1283 { 1284 int count, result; 1285 struct usb_serial_port *port = tport->tp_port; 1286 unsigned long flags; 1287 1288 spin_lock_irqsave(&tport->tp_lock, flags); 1289 1290 if (tport->tp_write_urb_in_use) 1291 goto unlock; 1292 1293 count = kfifo_out(&port->write_fifo, 1294 port->write_urb->transfer_buffer, 1295 port->bulk_out_size); 1296 1297 if (count == 0) 1298 goto unlock; 1299 1300 tport->tp_write_urb_in_use = 1; 1301 1302 spin_unlock_irqrestore(&tport->tp_lock, flags); 1303 1304 usb_serial_debug_data(&port->dev, __func__, count, 1305 port->write_urb->transfer_buffer); 1306 1307 usb_fill_bulk_urb(port->write_urb, port->serial->dev, 1308 usb_sndbulkpipe(port->serial->dev, 1309 port->bulk_out_endpointAddress), 1310 port->write_urb->transfer_buffer, count, 1311 ti_bulk_out_callback, tport); 1312 1313 result = usb_submit_urb(port->write_urb, GFP_ATOMIC); 1314 if (result) { 1315 dev_err_console(port, "%s - submit write urb failed, %d\n", 1316 __func__, result); 1317 tport->tp_write_urb_in_use = 0; 1318 /* TODO: reschedule ti_send */ 1319 } else { 1320 spin_lock_irqsave(&tport->tp_lock, flags); 1321 port->icount.tx += count; 1322 spin_unlock_irqrestore(&tport->tp_lock, flags); 1323 } 1324 1325 /* more room in the buffer for new writes, wakeup */ 1326 tty_port_tty_wakeup(&port->port); 1327 1328 return; 1329 unlock: 1330 spin_unlock_irqrestore(&tport->tp_lock, flags); 1331 return; 1332 } 1333 1334 1335 static int ti_set_mcr(struct ti_port *tport, unsigned int mcr) 1336 { 1337 unsigned long flags; 1338 int status; 1339 1340 status = ti_write_byte(tport->tp_port, tport->tp_tdev, 1341 tport->tp_uart_base_addr + TI_UART_OFFSET_MCR, 1342 TI_MCR_RTS | TI_MCR_DTR | TI_MCR_LOOP, mcr); 1343 1344 spin_lock_irqsave(&tport->tp_lock, flags); 1345 if (!status) 1346 tport->tp_shadow_mcr = mcr; 1347 spin_unlock_irqrestore(&tport->tp_lock, flags); 1348 1349 return status; 1350 } 1351 1352 1353 static int ti_get_lsr(struct ti_port *tport, u8 *lsr) 1354 { 1355 int size, status; 1356 struct usb_serial_port *port = tport->tp_port; 1357 struct ti_port_status *data; 1358 1359 size = sizeof(struct ti_port_status); 1360 data = kmalloc(size, GFP_KERNEL); 1361 if (!data) 1362 return -ENOMEM; 1363 1364 status = ti_port_cmd_in(port, TI_GET_PORT_STATUS, 0, data, size); 1365 if (status) { 1366 dev_err(&port->dev, 1367 "%s - get port status command failed, %d\n", 1368 __func__, status); 1369 goto free_data; 1370 } 1371 1372 dev_dbg(&port->dev, "%s - lsr 0x%02X\n", __func__, data->bLSR); 1373 1374 *lsr = data->bLSR; 1375 1376 free_data: 1377 kfree(data); 1378 return status; 1379 } 1380 1381 1382 static void ti_get_serial_info(struct tty_struct *tty, struct serial_struct *ss) 1383 { 1384 struct usb_serial_port *port = tty->driver_data; 1385 struct ti_port *tport = usb_get_serial_port_data(port); 1386 1387 ss->baud_base = tport->tp_tdev->td_is_3410 ? 921600 : 460800; 1388 } 1389 1390 1391 static void ti_handle_new_msr(struct ti_port *tport, u8 msr) 1392 { 1393 struct async_icount *icount; 1394 struct tty_struct *tty; 1395 unsigned long flags; 1396 1397 dev_dbg(&tport->tp_port->dev, "%s - msr 0x%02X\n", __func__, msr); 1398 1399 if (msr & TI_MSR_DELTA_MASK) { 1400 spin_lock_irqsave(&tport->tp_lock, flags); 1401 icount = &tport->tp_port->icount; 1402 if (msr & TI_MSR_DELTA_CTS) 1403 icount->cts++; 1404 if (msr & TI_MSR_DELTA_DSR) 1405 icount->dsr++; 1406 if (msr & TI_MSR_DELTA_CD) 1407 icount->dcd++; 1408 if (msr & TI_MSR_DELTA_RI) 1409 icount->rng++; 1410 wake_up_interruptible(&tport->tp_port->port.delta_msr_wait); 1411 spin_unlock_irqrestore(&tport->tp_lock, flags); 1412 } 1413 1414 tport->tp_msr = msr & TI_MSR_MASK; 1415 1416 /* handle CTS flow control */ 1417 tty = tty_port_tty_get(&tport->tp_port->port); 1418 if (tty && C_CRTSCTS(tty)) { 1419 if (msr & TI_MSR_CTS) 1420 tty_wakeup(tty); 1421 } 1422 tty_kref_put(tty); 1423 } 1424 1425 1426 static void ti_stop_read(struct ti_port *tport, struct tty_struct *tty) 1427 { 1428 unsigned long flags; 1429 1430 spin_lock_irqsave(&tport->tp_lock, flags); 1431 1432 if (tport->tp_read_urb_state == TI_READ_URB_RUNNING) 1433 tport->tp_read_urb_state = TI_READ_URB_STOPPING; 1434 1435 spin_unlock_irqrestore(&tport->tp_lock, flags); 1436 } 1437 1438 1439 static int ti_restart_read(struct ti_port *tport, struct tty_struct *tty) 1440 { 1441 struct urb *urb; 1442 int status = 0; 1443 unsigned long flags; 1444 1445 spin_lock_irqsave(&tport->tp_lock, flags); 1446 1447 if (tport->tp_read_urb_state == TI_READ_URB_STOPPED) { 1448 tport->tp_read_urb_state = TI_READ_URB_RUNNING; 1449 urb = tport->tp_port->read_urb; 1450 spin_unlock_irqrestore(&tport->tp_lock, flags); 1451 urb->context = tport; 1452 status = usb_submit_urb(urb, GFP_KERNEL); 1453 } else { 1454 tport->tp_read_urb_state = TI_READ_URB_RUNNING; 1455 spin_unlock_irqrestore(&tport->tp_lock, flags); 1456 } 1457 1458 return status; 1459 } 1460 1461 static int ti_command_out_sync(struct usb_device *udev, u8 command, 1462 u16 moduleid, u16 value, void *data, int size) 1463 { 1464 int status; 1465 1466 status = usb_control_msg(udev, usb_sndctrlpipe(udev, 0), command, 1467 USB_TYPE_VENDOR | USB_RECIP_DEVICE | USB_DIR_OUT, 1468 value, moduleid, data, size, 1000); 1469 if (status < 0) 1470 return status; 1471 1472 return 0; 1473 } 1474 1475 static int ti_command_in_sync(struct usb_device *udev, u8 command, 1476 u16 moduleid, u16 value, void *data, int size) 1477 { 1478 int status; 1479 1480 status = usb_control_msg(udev, usb_rcvctrlpipe(udev, 0), command, 1481 USB_TYPE_VENDOR | USB_RECIP_DEVICE | USB_DIR_IN, 1482 value, moduleid, data, size, 1000); 1483 if (status == size) 1484 status = 0; 1485 else if (status >= 0) 1486 status = -ECOMM; 1487 1488 return status; 1489 } 1490 1491 static int ti_port_cmd_out(struct usb_serial_port *port, u8 command, 1492 u16 value, void *data, int size) 1493 { 1494 return ti_command_out_sync(port->serial->dev, command, 1495 TI_UART1_PORT + port->port_number, 1496 value, data, size); 1497 } 1498 1499 static int ti_port_cmd_in(struct usb_serial_port *port, u8 command, 1500 u16 value, void *data, int size) 1501 { 1502 return ti_command_in_sync(port->serial->dev, command, 1503 TI_UART1_PORT + port->port_number, 1504 value, data, size); 1505 } 1506 1507 static int ti_write_byte(struct usb_serial_port *port, 1508 struct ti_device *tdev, unsigned long addr, 1509 u8 mask, u8 byte) 1510 { 1511 int status; 1512 unsigned int size; 1513 struct ti_write_data_bytes *data; 1514 1515 dev_dbg(&port->dev, "%s - addr 0x%08lX, mask 0x%02X, byte 0x%02X\n", __func__, 1516 addr, mask, byte); 1517 1518 size = sizeof(struct ti_write_data_bytes) + 2; 1519 data = kmalloc(size, GFP_KERNEL); 1520 if (!data) 1521 return -ENOMEM; 1522 1523 data->bAddrType = TI_RW_DATA_ADDR_XDATA; 1524 data->bDataType = TI_RW_DATA_BYTE; 1525 data->bDataCounter = 1; 1526 data->wBaseAddrHi = cpu_to_be16(addr>>16); 1527 data->wBaseAddrLo = cpu_to_be16(addr); 1528 data->bData[0] = mask; 1529 data->bData[1] = byte; 1530 1531 status = ti_command_out_sync(port->serial->dev, TI_WRITE_DATA, 1532 TI_RAM_PORT, 0, data, size); 1533 if (status < 0) 1534 dev_err(&port->dev, "%s - failed, %d\n", __func__, status); 1535 1536 kfree(data); 1537 1538 return status; 1539 } 1540 1541 static int ti_do_download(struct usb_device *dev, int pipe, 1542 u8 *buffer, int size) 1543 { 1544 int pos; 1545 u8 cs = 0; 1546 int done; 1547 struct ti_firmware_header *header; 1548 int status = 0; 1549 int len; 1550 1551 for (pos = sizeof(struct ti_firmware_header); pos < size; pos++) 1552 cs = (u8)(cs + buffer[pos]); 1553 1554 header = (struct ti_firmware_header *)buffer; 1555 header->wLength = cpu_to_le16(size - sizeof(*header)); 1556 header->bCheckSum = cs; 1557 1558 dev_dbg(&dev->dev, "%s - downloading firmware\n", __func__); 1559 for (pos = 0; pos < size; pos += done) { 1560 len = min(size - pos, TI_DOWNLOAD_MAX_PACKET_SIZE); 1561 status = usb_bulk_msg(dev, pipe, buffer + pos, len, 1562 &done, 1000); 1563 if (status) 1564 break; 1565 } 1566 return status; 1567 } 1568 1569 static int ti_download_firmware(struct ti_device *tdev) 1570 { 1571 int status; 1572 int buffer_size; 1573 u8 *buffer; 1574 struct usb_device *dev = tdev->td_serial->dev; 1575 unsigned int pipe = usb_sndbulkpipe(dev, 1576 tdev->td_serial->port[0]->bulk_out_endpointAddress); 1577 const struct firmware *fw_p; 1578 char buf[32]; 1579 1580 if (le16_to_cpu(dev->descriptor.idVendor) == MXU1_VENDOR_ID) { 1581 snprintf(buf, 1582 sizeof(buf), 1583 "moxa/moxa-%04x.fw", 1584 le16_to_cpu(dev->descriptor.idProduct)); 1585 1586 status = request_firmware(&fw_p, buf, &dev->dev); 1587 goto check_firmware; 1588 } 1589 1590 /* try ID specific firmware first, then try generic firmware */ 1591 sprintf(buf, "ti_usb-v%04x-p%04x.fw", 1592 le16_to_cpu(dev->descriptor.idVendor), 1593 le16_to_cpu(dev->descriptor.idProduct)); 1594 status = request_firmware(&fw_p, buf, &dev->dev); 1595 1596 if (status != 0) { 1597 buf[0] = '\0'; 1598 if (le16_to_cpu(dev->descriptor.idVendor) == MTS_VENDOR_ID) { 1599 switch (le16_to_cpu(dev->descriptor.idProduct)) { 1600 case MTS_CDMA_PRODUCT_ID: 1601 strcpy(buf, "mts_cdma.fw"); 1602 break; 1603 case MTS_GSM_PRODUCT_ID: 1604 strcpy(buf, "mts_gsm.fw"); 1605 break; 1606 case MTS_EDGE_PRODUCT_ID: 1607 strcpy(buf, "mts_edge.fw"); 1608 break; 1609 case MTS_MT9234MU_PRODUCT_ID: 1610 strcpy(buf, "mts_mt9234mu.fw"); 1611 break; 1612 case MTS_MT9234ZBA_PRODUCT_ID: 1613 strcpy(buf, "mts_mt9234zba.fw"); 1614 break; 1615 case MTS_MT9234ZBAOLD_PRODUCT_ID: 1616 strcpy(buf, "mts_mt9234zba.fw"); 1617 break; } 1618 } 1619 if (buf[0] == '\0') { 1620 if (tdev->td_is_3410) 1621 strcpy(buf, "ti_3410.fw"); 1622 else 1623 strcpy(buf, "ti_5052.fw"); 1624 } 1625 status = request_firmware(&fw_p, buf, &dev->dev); 1626 } 1627 1628 check_firmware: 1629 if (status) { 1630 dev_err(&dev->dev, "%s - firmware not found\n", __func__); 1631 return -ENOENT; 1632 } 1633 if (fw_p->size > TI_FIRMWARE_BUF_SIZE) { 1634 dev_err(&dev->dev, "%s - firmware too large %zu\n", __func__, fw_p->size); 1635 release_firmware(fw_p); 1636 return -ENOENT; 1637 } 1638 1639 buffer_size = TI_FIRMWARE_BUF_SIZE + sizeof(struct ti_firmware_header); 1640 buffer = kmalloc(buffer_size, GFP_KERNEL); 1641 if (buffer) { 1642 memcpy(buffer, fw_p->data, fw_p->size); 1643 memset(buffer + fw_p->size, 0xff, buffer_size - fw_p->size); 1644 status = ti_do_download(dev, pipe, buffer, fw_p->size); 1645 kfree(buffer); 1646 } else { 1647 status = -ENOMEM; 1648 } 1649 release_firmware(fw_p); 1650 if (status) { 1651 dev_err(&dev->dev, "%s - error downloading firmware, %d\n", 1652 __func__, status); 1653 return status; 1654 } 1655 1656 dev_dbg(&dev->dev, "%s - download successful\n", __func__); 1657 1658 return 0; 1659 } 1660