1 // SPDX-License-Identifier: GPL-2.0+ 2 /* 3 * TI 3410/5052 USB Serial Driver 4 * 5 * Copyright (C) 2004 Texas Instruments 6 * 7 * This driver is based on the Linux io_ti driver, which is 8 * Copyright (C) 2000-2002 Inside Out Networks 9 * Copyright (C) 2001-2002 Greg Kroah-Hartman 10 * 11 * For questions or problems with this driver, contact Texas Instruments 12 * technical support, or Al Borchers <alborchers@steinerpoint.com>, or 13 * Peter Berger <pberger@brimson.com>. 14 */ 15 16 #include <linux/kernel.h> 17 #include <linux/errno.h> 18 #include <linux/firmware.h> 19 #include <linux/slab.h> 20 #include <linux/tty.h> 21 #include <linux/tty_driver.h> 22 #include <linux/tty_flip.h> 23 #include <linux/module.h> 24 #include <linux/spinlock.h> 25 #include <linux/ioctl.h> 26 #include <linux/serial.h> 27 #include <linux/kfifo.h> 28 #include <linux/mutex.h> 29 #include <linux/uaccess.h> 30 #include <linux/usb.h> 31 #include <linux/usb/serial.h> 32 33 /* Configuration ids */ 34 #define TI_BOOT_CONFIG 1 35 #define TI_ACTIVE_CONFIG 2 36 37 /* Vendor and product ids */ 38 #define TI_VENDOR_ID 0x0451 39 #define IBM_VENDOR_ID 0x04b3 40 #define STARTECH_VENDOR_ID 0x14b0 41 #define TI_3410_PRODUCT_ID 0x3410 42 #define IBM_4543_PRODUCT_ID 0x4543 43 #define IBM_454B_PRODUCT_ID 0x454b 44 #define IBM_454C_PRODUCT_ID 0x454c 45 #define TI_3410_EZ430_ID 0xF430 /* TI ez430 development tool */ 46 #define TI_5052_BOOT_PRODUCT_ID 0x5052 /* no EEPROM, no firmware */ 47 #define TI_5152_BOOT_PRODUCT_ID 0x5152 /* no EEPROM, no firmware */ 48 #define TI_5052_EEPROM_PRODUCT_ID 0x505A /* EEPROM, no firmware */ 49 #define TI_5052_FIRMWARE_PRODUCT_ID 0x505F /* firmware is running */ 50 #define FRI2_PRODUCT_ID 0x5053 /* Fish River Island II */ 51 52 /* Multi-Tech vendor and product ids */ 53 #define MTS_VENDOR_ID 0x06E0 54 #define MTS_GSM_NO_FW_PRODUCT_ID 0xF108 55 #define MTS_CDMA_NO_FW_PRODUCT_ID 0xF109 56 #define MTS_CDMA_PRODUCT_ID 0xF110 57 #define MTS_GSM_PRODUCT_ID 0xF111 58 #define MTS_EDGE_PRODUCT_ID 0xF112 59 #define MTS_MT9234MU_PRODUCT_ID 0xF114 60 #define MTS_MT9234ZBA_PRODUCT_ID 0xF115 61 #define MTS_MT9234ZBAOLD_PRODUCT_ID 0x0319 62 63 /* Abbott Diabetics vendor and product ids */ 64 #define ABBOTT_VENDOR_ID 0x1a61 65 #define ABBOTT_STEREO_PLUG_ID 0x3410 66 #define ABBOTT_PRODUCT_ID ABBOTT_STEREO_PLUG_ID 67 #define ABBOTT_STRIP_PORT_ID 0x3420 68 69 /* Honeywell vendor and product IDs */ 70 #define HONEYWELL_VENDOR_ID 0x10ac 71 #define HONEYWELL_HGI80_PRODUCT_ID 0x0102 /* Honeywell HGI80 */ 72 73 /* Moxa UPORT 11x0 vendor and product IDs */ 74 #define MXU1_VENDOR_ID 0x110a 75 #define MXU1_1110_PRODUCT_ID 0x1110 76 #define MXU1_1130_PRODUCT_ID 0x1130 77 #define MXU1_1150_PRODUCT_ID 0x1150 78 #define MXU1_1151_PRODUCT_ID 0x1151 79 #define MXU1_1131_PRODUCT_ID 0x1131 80 81 /* Commands */ 82 #define TI_GET_VERSION 0x01 83 #define TI_GET_PORT_STATUS 0x02 84 #define TI_GET_PORT_DEV_INFO 0x03 85 #define TI_GET_CONFIG 0x04 86 #define TI_SET_CONFIG 0x05 87 #define TI_OPEN_PORT 0x06 88 #define TI_CLOSE_PORT 0x07 89 #define TI_START_PORT 0x08 90 #define TI_STOP_PORT 0x09 91 #define TI_TEST_PORT 0x0A 92 #define TI_PURGE_PORT 0x0B 93 #define TI_RESET_EXT_DEVICE 0x0C 94 #define TI_WRITE_DATA 0x80 95 #define TI_READ_DATA 0x81 96 #define TI_REQ_TYPE_CLASS 0x82 97 98 /* Module identifiers */ 99 #define TI_I2C_PORT 0x01 100 #define TI_IEEE1284_PORT 0x02 101 #define TI_UART1_PORT 0x03 102 #define TI_UART2_PORT 0x04 103 #define TI_RAM_PORT 0x05 104 105 /* Modem status */ 106 #define TI_MSR_DELTA_CTS 0x01 107 #define TI_MSR_DELTA_DSR 0x02 108 #define TI_MSR_DELTA_RI 0x04 109 #define TI_MSR_DELTA_CD 0x08 110 #define TI_MSR_CTS 0x10 111 #define TI_MSR_DSR 0x20 112 #define TI_MSR_RI 0x40 113 #define TI_MSR_CD 0x80 114 #define TI_MSR_DELTA_MASK 0x0F 115 #define TI_MSR_MASK 0xF0 116 117 /* Line status */ 118 #define TI_LSR_OVERRUN_ERROR 0x01 119 #define TI_LSR_PARITY_ERROR 0x02 120 #define TI_LSR_FRAMING_ERROR 0x04 121 #define TI_LSR_BREAK 0x08 122 #define TI_LSR_ERROR 0x0F 123 #define TI_LSR_RX_FULL 0x10 124 #define TI_LSR_TX_EMPTY 0x20 125 #define TI_LSR_TX_EMPTY_BOTH 0x40 126 127 /* Line control */ 128 #define TI_LCR_BREAK 0x40 129 130 /* Modem control */ 131 #define TI_MCR_LOOP 0x04 132 #define TI_MCR_DTR 0x10 133 #define TI_MCR_RTS 0x20 134 135 /* Mask settings */ 136 #define TI_UART_ENABLE_RTS_IN 0x0001 137 #define TI_UART_DISABLE_RTS 0x0002 138 #define TI_UART_ENABLE_PARITY_CHECKING 0x0008 139 #define TI_UART_ENABLE_DSR_OUT 0x0010 140 #define TI_UART_ENABLE_CTS_OUT 0x0020 141 #define TI_UART_ENABLE_X_OUT 0x0040 142 #define TI_UART_ENABLE_XA_OUT 0x0080 143 #define TI_UART_ENABLE_X_IN 0x0100 144 #define TI_UART_ENABLE_DTR_IN 0x0800 145 #define TI_UART_DISABLE_DTR 0x1000 146 #define TI_UART_ENABLE_MS_INTS 0x2000 147 #define TI_UART_ENABLE_AUTO_START_DMA 0x4000 148 149 /* Parity */ 150 #define TI_UART_NO_PARITY 0x00 151 #define TI_UART_ODD_PARITY 0x01 152 #define TI_UART_EVEN_PARITY 0x02 153 #define TI_UART_MARK_PARITY 0x03 154 #define TI_UART_SPACE_PARITY 0x04 155 156 /* Stop bits */ 157 #define TI_UART_1_STOP_BITS 0x00 158 #define TI_UART_1_5_STOP_BITS 0x01 159 #define TI_UART_2_STOP_BITS 0x02 160 161 /* Bits per character */ 162 #define TI_UART_5_DATA_BITS 0x00 163 #define TI_UART_6_DATA_BITS 0x01 164 #define TI_UART_7_DATA_BITS 0x02 165 #define TI_UART_8_DATA_BITS 0x03 166 167 /* 232/485 modes */ 168 #define TI_UART_232 0x00 169 #define TI_UART_485_RECEIVER_DISABLED 0x01 170 #define TI_UART_485_RECEIVER_ENABLED 0x02 171 172 /* Pipe transfer mode and timeout */ 173 #define TI_PIPE_MODE_CONTINUOUS 0x01 174 #define TI_PIPE_MODE_MASK 0x03 175 #define TI_PIPE_TIMEOUT_MASK 0x7C 176 #define TI_PIPE_TIMEOUT_ENABLE 0x80 177 178 /* Config struct */ 179 struct ti_uart_config { 180 __be16 wBaudRate; 181 __be16 wFlags; 182 u8 bDataBits; 183 u8 bParity; 184 u8 bStopBits; 185 char cXon; 186 char cXoff; 187 u8 bUartMode; 188 }; 189 190 /* Get port status */ 191 struct ti_port_status { 192 u8 bCmdCode; 193 u8 bModuleId; 194 u8 bErrorCode; 195 u8 bMSR; 196 u8 bLSR; 197 }; 198 199 /* Purge modes */ 200 #define TI_PURGE_OUTPUT 0x00 201 #define TI_PURGE_INPUT 0x80 202 203 /* Read/Write data */ 204 #define TI_RW_DATA_ADDR_SFR 0x10 205 #define TI_RW_DATA_ADDR_IDATA 0x20 206 #define TI_RW_DATA_ADDR_XDATA 0x30 207 #define TI_RW_DATA_ADDR_CODE 0x40 208 #define TI_RW_DATA_ADDR_GPIO 0x50 209 #define TI_RW_DATA_ADDR_I2C 0x60 210 #define TI_RW_DATA_ADDR_FLASH 0x70 211 #define TI_RW_DATA_ADDR_DSP 0x80 212 213 #define TI_RW_DATA_UNSPECIFIED 0x00 214 #define TI_RW_DATA_BYTE 0x01 215 #define TI_RW_DATA_WORD 0x02 216 #define TI_RW_DATA_DOUBLE_WORD 0x04 217 218 struct ti_write_data_bytes { 219 u8 bAddrType; 220 u8 bDataType; 221 u8 bDataCounter; 222 __be16 wBaseAddrHi; 223 __be16 wBaseAddrLo; 224 u8 bData[]; 225 } __packed; 226 227 struct ti_read_data_request { 228 u8 bAddrType; 229 u8 bDataType; 230 u8 bDataCounter; 231 __be16 wBaseAddrHi; 232 __be16 wBaseAddrLo; 233 } __packed; 234 235 struct ti_read_data_bytes { 236 u8 bCmdCode; 237 u8 bModuleId; 238 u8 bErrorCode; 239 u8 bData[]; 240 }; 241 242 /* Interrupt struct */ 243 struct ti_interrupt { 244 u8 bICode; 245 u8 bIInfo; 246 }; 247 248 /* Interrupt codes */ 249 #define TI_CODE_HARDWARE_ERROR 0xFF 250 #define TI_CODE_DATA_ERROR 0x03 251 #define TI_CODE_MODEM_STATUS 0x04 252 253 /* Download firmware max packet size */ 254 #define TI_DOWNLOAD_MAX_PACKET_SIZE 64 255 256 /* Firmware image header */ 257 struct ti_firmware_header { 258 __le16 wLength; 259 u8 bCheckSum; 260 } __packed; 261 262 /* UART addresses */ 263 #define TI_UART1_BASE_ADDR 0xFFA0 /* UART 1 base address */ 264 #define TI_UART2_BASE_ADDR 0xFFB0 /* UART 2 base address */ 265 #define TI_UART_OFFSET_LCR 0x0002 /* UART MCR register offset */ 266 #define TI_UART_OFFSET_MCR 0x0004 /* UART MCR register offset */ 267 268 #define TI_DRIVER_AUTHOR "Al Borchers <alborchers@steinerpoint.com>" 269 #define TI_DRIVER_DESC "TI USB 3410/5052 Serial Driver" 270 271 #define TI_FIRMWARE_BUF_SIZE 16284 272 273 #define TI_TRANSFER_TIMEOUT 2 274 275 /* read urb states */ 276 #define TI_READ_URB_RUNNING 0 277 #define TI_READ_URB_STOPPING 1 278 #define TI_READ_URB_STOPPED 2 279 280 #define TI_EXTRA_VID_PID_COUNT 5 281 282 struct ti_port { 283 int tp_is_open; 284 u8 tp_msr; 285 u8 tp_shadow_mcr; 286 u8 tp_uart_mode; /* 232 or 485 modes */ 287 unsigned int tp_uart_base_addr; 288 struct ti_device *tp_tdev; 289 struct usb_serial_port *tp_port; 290 spinlock_t tp_lock; 291 int tp_read_urb_state; 292 int tp_write_urb_in_use; 293 }; 294 295 struct ti_device { 296 struct mutex td_open_close_lock; 297 int td_open_port_count; 298 struct usb_serial *td_serial; 299 int td_is_3410; 300 bool td_rs485_only; 301 }; 302 303 static int ti_startup(struct usb_serial *serial); 304 static void ti_release(struct usb_serial *serial); 305 static int ti_port_probe(struct usb_serial_port *port); 306 static void ti_port_remove(struct usb_serial_port *port); 307 static int ti_open(struct tty_struct *tty, struct usb_serial_port *port); 308 static void ti_close(struct usb_serial_port *port); 309 static int ti_write(struct tty_struct *tty, struct usb_serial_port *port, 310 const unsigned char *data, int count); 311 static unsigned int ti_write_room(struct tty_struct *tty); 312 static unsigned int ti_chars_in_buffer(struct tty_struct *tty); 313 static bool ti_tx_empty(struct usb_serial_port *port); 314 static void ti_throttle(struct tty_struct *tty); 315 static void ti_unthrottle(struct tty_struct *tty); 316 static void ti_set_termios(struct tty_struct *tty, 317 struct usb_serial_port *port, 318 const struct ktermios *old_termios); 319 static int ti_tiocmget(struct tty_struct *tty); 320 static int ti_tiocmset(struct tty_struct *tty, 321 unsigned int set, unsigned int clear); 322 static int ti_break(struct tty_struct *tty, int break_state); 323 static void ti_interrupt_callback(struct urb *urb); 324 static void ti_bulk_in_callback(struct urb *urb); 325 static void ti_bulk_out_callback(struct urb *urb); 326 327 static void ti_recv(struct usb_serial_port *port, unsigned char *data, 328 int length); 329 static void ti_send(struct ti_port *tport); 330 static int ti_set_mcr(struct ti_port *tport, unsigned int mcr); 331 static int ti_get_lsr(struct ti_port *tport, u8 *lsr); 332 static void ti_get_serial_info(struct tty_struct *tty, struct serial_struct *ss); 333 static void ti_handle_new_msr(struct ti_port *tport, u8 msr); 334 335 static void ti_stop_read(struct ti_port *tport, struct tty_struct *tty); 336 static int ti_restart_read(struct ti_port *tport, struct tty_struct *tty); 337 338 static int ti_command_out_sync(struct usb_device *udev, u8 command, 339 u16 moduleid, u16 value, void *data, int size); 340 static int ti_command_in_sync(struct usb_device *udev, u8 command, 341 u16 moduleid, u16 value, void *data, int size); 342 static int ti_port_cmd_out(struct usb_serial_port *port, u8 command, 343 u16 value, void *data, int size); 344 static int ti_port_cmd_in(struct usb_serial_port *port, u8 command, 345 u16 value, void *data, int size); 346 347 static int ti_write_byte(struct usb_serial_port *port, struct ti_device *tdev, 348 unsigned long addr, u8 mask, u8 byte); 349 350 static int ti_download_firmware(struct ti_device *tdev); 351 352 static const struct usb_device_id ti_id_table_3410[] = { 353 { USB_DEVICE(TI_VENDOR_ID, TI_3410_PRODUCT_ID) }, 354 { USB_DEVICE(TI_VENDOR_ID, TI_3410_EZ430_ID) }, 355 { USB_DEVICE(MTS_VENDOR_ID, MTS_GSM_NO_FW_PRODUCT_ID) }, 356 { USB_DEVICE(MTS_VENDOR_ID, MTS_CDMA_NO_FW_PRODUCT_ID) }, 357 { USB_DEVICE(MTS_VENDOR_ID, MTS_CDMA_PRODUCT_ID) }, 358 { USB_DEVICE(MTS_VENDOR_ID, MTS_GSM_PRODUCT_ID) }, 359 { USB_DEVICE(MTS_VENDOR_ID, MTS_EDGE_PRODUCT_ID) }, 360 { USB_DEVICE(MTS_VENDOR_ID, MTS_MT9234MU_PRODUCT_ID) }, 361 { USB_DEVICE(MTS_VENDOR_ID, MTS_MT9234ZBA_PRODUCT_ID) }, 362 { USB_DEVICE(MTS_VENDOR_ID, MTS_MT9234ZBAOLD_PRODUCT_ID) }, 363 { USB_DEVICE(IBM_VENDOR_ID, IBM_4543_PRODUCT_ID) }, 364 { USB_DEVICE(IBM_VENDOR_ID, IBM_454B_PRODUCT_ID) }, 365 { USB_DEVICE(IBM_VENDOR_ID, IBM_454C_PRODUCT_ID) }, 366 { USB_DEVICE(ABBOTT_VENDOR_ID, ABBOTT_STEREO_PLUG_ID) }, 367 { USB_DEVICE(ABBOTT_VENDOR_ID, ABBOTT_STRIP_PORT_ID) }, 368 { USB_DEVICE(TI_VENDOR_ID, FRI2_PRODUCT_ID) }, 369 { USB_DEVICE(HONEYWELL_VENDOR_ID, HONEYWELL_HGI80_PRODUCT_ID) }, 370 { USB_DEVICE(MXU1_VENDOR_ID, MXU1_1110_PRODUCT_ID) }, 371 { USB_DEVICE(MXU1_VENDOR_ID, MXU1_1130_PRODUCT_ID) }, 372 { USB_DEVICE(MXU1_VENDOR_ID, MXU1_1131_PRODUCT_ID) }, 373 { USB_DEVICE(MXU1_VENDOR_ID, MXU1_1150_PRODUCT_ID) }, 374 { USB_DEVICE(MXU1_VENDOR_ID, MXU1_1151_PRODUCT_ID) }, 375 { USB_DEVICE(STARTECH_VENDOR_ID, TI_3410_PRODUCT_ID) }, 376 { } /* terminator */ 377 }; 378 379 static const struct usb_device_id ti_id_table_5052[] = { 380 { USB_DEVICE(TI_VENDOR_ID, TI_5052_BOOT_PRODUCT_ID) }, 381 { USB_DEVICE(TI_VENDOR_ID, TI_5152_BOOT_PRODUCT_ID) }, 382 { USB_DEVICE(TI_VENDOR_ID, TI_5052_EEPROM_PRODUCT_ID) }, 383 { USB_DEVICE(TI_VENDOR_ID, TI_5052_FIRMWARE_PRODUCT_ID) }, 384 { } 385 }; 386 387 static const struct usb_device_id ti_id_table_combined[] = { 388 { USB_DEVICE(TI_VENDOR_ID, TI_3410_PRODUCT_ID) }, 389 { USB_DEVICE(TI_VENDOR_ID, TI_3410_EZ430_ID) }, 390 { USB_DEVICE(MTS_VENDOR_ID, MTS_GSM_NO_FW_PRODUCT_ID) }, 391 { USB_DEVICE(MTS_VENDOR_ID, MTS_CDMA_NO_FW_PRODUCT_ID) }, 392 { USB_DEVICE(MTS_VENDOR_ID, MTS_CDMA_PRODUCT_ID) }, 393 { USB_DEVICE(MTS_VENDOR_ID, MTS_GSM_PRODUCT_ID) }, 394 { USB_DEVICE(MTS_VENDOR_ID, MTS_EDGE_PRODUCT_ID) }, 395 { USB_DEVICE(MTS_VENDOR_ID, MTS_MT9234MU_PRODUCT_ID) }, 396 { USB_DEVICE(MTS_VENDOR_ID, MTS_MT9234ZBA_PRODUCT_ID) }, 397 { USB_DEVICE(MTS_VENDOR_ID, MTS_MT9234ZBAOLD_PRODUCT_ID) }, 398 { USB_DEVICE(TI_VENDOR_ID, TI_5052_BOOT_PRODUCT_ID) }, 399 { USB_DEVICE(TI_VENDOR_ID, TI_5152_BOOT_PRODUCT_ID) }, 400 { USB_DEVICE(TI_VENDOR_ID, TI_5052_EEPROM_PRODUCT_ID) }, 401 { USB_DEVICE(TI_VENDOR_ID, TI_5052_FIRMWARE_PRODUCT_ID) }, 402 { USB_DEVICE(IBM_VENDOR_ID, IBM_4543_PRODUCT_ID) }, 403 { USB_DEVICE(IBM_VENDOR_ID, IBM_454B_PRODUCT_ID) }, 404 { USB_DEVICE(IBM_VENDOR_ID, IBM_454C_PRODUCT_ID) }, 405 { USB_DEVICE(ABBOTT_VENDOR_ID, ABBOTT_PRODUCT_ID) }, 406 { USB_DEVICE(ABBOTT_VENDOR_ID, ABBOTT_STRIP_PORT_ID) }, 407 { USB_DEVICE(TI_VENDOR_ID, FRI2_PRODUCT_ID) }, 408 { USB_DEVICE(HONEYWELL_VENDOR_ID, HONEYWELL_HGI80_PRODUCT_ID) }, 409 { USB_DEVICE(MXU1_VENDOR_ID, MXU1_1110_PRODUCT_ID) }, 410 { USB_DEVICE(MXU1_VENDOR_ID, MXU1_1130_PRODUCT_ID) }, 411 { USB_DEVICE(MXU1_VENDOR_ID, MXU1_1131_PRODUCT_ID) }, 412 { USB_DEVICE(MXU1_VENDOR_ID, MXU1_1150_PRODUCT_ID) }, 413 { USB_DEVICE(MXU1_VENDOR_ID, MXU1_1151_PRODUCT_ID) }, 414 { USB_DEVICE(STARTECH_VENDOR_ID, TI_3410_PRODUCT_ID) }, 415 { } /* terminator */ 416 }; 417 418 static struct usb_serial_driver ti_1port_device = { 419 .driver = { 420 .owner = THIS_MODULE, 421 .name = "ti_usb_3410_5052_1", 422 }, 423 .description = "TI USB 3410 1 port adapter", 424 .id_table = ti_id_table_3410, 425 .num_ports = 1, 426 .num_bulk_out = 1, 427 .attach = ti_startup, 428 .release = ti_release, 429 .port_probe = ti_port_probe, 430 .port_remove = ti_port_remove, 431 .open = ti_open, 432 .close = ti_close, 433 .write = ti_write, 434 .write_room = ti_write_room, 435 .chars_in_buffer = ti_chars_in_buffer, 436 .tx_empty = ti_tx_empty, 437 .throttle = ti_throttle, 438 .unthrottle = ti_unthrottle, 439 .get_serial = ti_get_serial_info, 440 .set_termios = ti_set_termios, 441 .tiocmget = ti_tiocmget, 442 .tiocmset = ti_tiocmset, 443 .tiocmiwait = usb_serial_generic_tiocmiwait, 444 .get_icount = usb_serial_generic_get_icount, 445 .break_ctl = ti_break, 446 .read_int_callback = ti_interrupt_callback, 447 .read_bulk_callback = ti_bulk_in_callback, 448 .write_bulk_callback = ti_bulk_out_callback, 449 }; 450 451 static struct usb_serial_driver ti_2port_device = { 452 .driver = { 453 .owner = THIS_MODULE, 454 .name = "ti_usb_3410_5052_2", 455 }, 456 .description = "TI USB 5052 2 port adapter", 457 .id_table = ti_id_table_5052, 458 .num_ports = 2, 459 .num_bulk_out = 1, 460 .attach = ti_startup, 461 .release = ti_release, 462 .port_probe = ti_port_probe, 463 .port_remove = ti_port_remove, 464 .open = ti_open, 465 .close = ti_close, 466 .write = ti_write, 467 .write_room = ti_write_room, 468 .chars_in_buffer = ti_chars_in_buffer, 469 .tx_empty = ti_tx_empty, 470 .throttle = ti_throttle, 471 .unthrottle = ti_unthrottle, 472 .get_serial = ti_get_serial_info, 473 .set_termios = ti_set_termios, 474 .tiocmget = ti_tiocmget, 475 .tiocmset = ti_tiocmset, 476 .tiocmiwait = usb_serial_generic_tiocmiwait, 477 .get_icount = usb_serial_generic_get_icount, 478 .break_ctl = ti_break, 479 .read_int_callback = ti_interrupt_callback, 480 .read_bulk_callback = ti_bulk_in_callback, 481 .write_bulk_callback = ti_bulk_out_callback, 482 }; 483 484 static struct usb_serial_driver * const serial_drivers[] = { 485 &ti_1port_device, &ti_2port_device, NULL 486 }; 487 488 MODULE_AUTHOR(TI_DRIVER_AUTHOR); 489 MODULE_DESCRIPTION(TI_DRIVER_DESC); 490 MODULE_LICENSE("GPL"); 491 492 MODULE_FIRMWARE("ti_3410.fw"); 493 MODULE_FIRMWARE("ti_5052.fw"); 494 MODULE_FIRMWARE("mts_cdma.fw"); 495 MODULE_FIRMWARE("mts_gsm.fw"); 496 MODULE_FIRMWARE("mts_edge.fw"); 497 MODULE_FIRMWARE("mts_mt9234mu.fw"); 498 MODULE_FIRMWARE("mts_mt9234zba.fw"); 499 MODULE_FIRMWARE("moxa/moxa-1110.fw"); 500 MODULE_FIRMWARE("moxa/moxa-1130.fw"); 501 MODULE_FIRMWARE("moxa/moxa-1131.fw"); 502 MODULE_FIRMWARE("moxa/moxa-1150.fw"); 503 MODULE_FIRMWARE("moxa/moxa-1151.fw"); 504 505 MODULE_DEVICE_TABLE(usb, ti_id_table_combined); 506 507 module_usb_serial_driver(serial_drivers, ti_id_table_combined); 508 ti_startup(struct usb_serial * serial)509 static int ti_startup(struct usb_serial *serial) 510 { 511 struct ti_device *tdev; 512 struct usb_device *dev = serial->dev; 513 struct usb_host_interface *cur_altsetting; 514 int num_endpoints; 515 u16 vid, pid; 516 int status; 517 518 dev_dbg(&dev->dev, 519 "%s - product 0x%4X, num configurations %d, configuration value %d\n", 520 __func__, le16_to_cpu(dev->descriptor.idProduct), 521 dev->descriptor.bNumConfigurations, 522 dev->actconfig->desc.bConfigurationValue); 523 524 tdev = kzalloc(sizeof(struct ti_device), GFP_KERNEL); 525 if (!tdev) 526 return -ENOMEM; 527 528 mutex_init(&tdev->td_open_close_lock); 529 tdev->td_serial = serial; 530 usb_set_serial_data(serial, tdev); 531 532 /* determine device type */ 533 if (serial->type == &ti_1port_device) 534 tdev->td_is_3410 = 1; 535 dev_dbg(&dev->dev, "%s - device type is %s\n", __func__, 536 tdev->td_is_3410 ? "3410" : "5052"); 537 538 vid = le16_to_cpu(dev->descriptor.idVendor); 539 pid = le16_to_cpu(dev->descriptor.idProduct); 540 if (vid == MXU1_VENDOR_ID) { 541 switch (pid) { 542 case MXU1_1130_PRODUCT_ID: 543 case MXU1_1131_PRODUCT_ID: 544 tdev->td_rs485_only = true; 545 break; 546 } 547 } 548 549 cur_altsetting = serial->interface->cur_altsetting; 550 num_endpoints = cur_altsetting->desc.bNumEndpoints; 551 552 /* if we have only 1 configuration and 1 endpoint, download firmware */ 553 if (dev->descriptor.bNumConfigurations == 1 && num_endpoints == 1) { 554 status = ti_download_firmware(tdev); 555 556 if (status != 0) 557 goto free_tdev; 558 559 /* 3410 must be reset, 5052 resets itself */ 560 if (tdev->td_is_3410) { 561 msleep_interruptible(100); 562 usb_reset_device(dev); 563 } 564 565 status = -ENODEV; 566 goto free_tdev; 567 } 568 569 /* the second configuration must be set */ 570 if (dev->actconfig->desc.bConfigurationValue == TI_BOOT_CONFIG) { 571 status = usb_driver_set_configuration(dev, TI_ACTIVE_CONFIG); 572 status = status ? status : -ENODEV; 573 goto free_tdev; 574 } 575 576 if (serial->num_bulk_in < serial->num_ports || 577 serial->num_bulk_out < serial->num_ports) { 578 dev_err(&serial->interface->dev, "missing endpoints\n"); 579 status = -ENODEV; 580 goto free_tdev; 581 } 582 583 return 0; 584 585 free_tdev: 586 kfree(tdev); 587 usb_set_serial_data(serial, NULL); 588 return status; 589 } 590 591 ti_release(struct usb_serial * serial)592 static void ti_release(struct usb_serial *serial) 593 { 594 struct ti_device *tdev = usb_get_serial_data(serial); 595 596 kfree(tdev); 597 } 598 ti_port_probe(struct usb_serial_port * port)599 static int ti_port_probe(struct usb_serial_port *port) 600 { 601 struct ti_port *tport; 602 603 tport = kzalloc(sizeof(*tport), GFP_KERNEL); 604 if (!tport) 605 return -ENOMEM; 606 607 spin_lock_init(&tport->tp_lock); 608 if (port == port->serial->port[0]) 609 tport->tp_uart_base_addr = TI_UART1_BASE_ADDR; 610 else 611 tport->tp_uart_base_addr = TI_UART2_BASE_ADDR; 612 tport->tp_port = port; 613 tport->tp_tdev = usb_get_serial_data(port->serial); 614 615 if (tport->tp_tdev->td_rs485_only) 616 tport->tp_uart_mode = TI_UART_485_RECEIVER_DISABLED; 617 else 618 tport->tp_uart_mode = TI_UART_232; 619 620 usb_set_serial_port_data(port, tport); 621 622 /* 623 * The TUSB5052 LSR does not tell when the transmitter shift register 624 * has emptied so add a one-character drain delay. 625 */ 626 if (!tport->tp_tdev->td_is_3410) 627 port->port.drain_delay = 1; 628 629 return 0; 630 } 631 ti_port_remove(struct usb_serial_port * port)632 static void ti_port_remove(struct usb_serial_port *port) 633 { 634 struct ti_port *tport; 635 636 tport = usb_get_serial_port_data(port); 637 kfree(tport); 638 } 639 ti_open(struct tty_struct * tty,struct usb_serial_port * port)640 static int ti_open(struct tty_struct *tty, struct usb_serial_port *port) 641 { 642 struct ti_port *tport = usb_get_serial_port_data(port); 643 struct ti_device *tdev; 644 struct usb_device *dev; 645 struct urb *urb; 646 int status; 647 u16 open_settings; 648 649 open_settings = (TI_PIPE_MODE_CONTINUOUS | 650 TI_PIPE_TIMEOUT_ENABLE | 651 (TI_TRANSFER_TIMEOUT << 2)); 652 653 dev = port->serial->dev; 654 tdev = tport->tp_tdev; 655 656 /* only one open on any port on a device at a time */ 657 if (mutex_lock_interruptible(&tdev->td_open_close_lock)) 658 return -ERESTARTSYS; 659 660 tport->tp_msr = 0; 661 tport->tp_shadow_mcr |= (TI_MCR_RTS | TI_MCR_DTR); 662 663 /* start interrupt urb the first time a port is opened on this device */ 664 if (tdev->td_open_port_count == 0) { 665 dev_dbg(&port->dev, "%s - start interrupt in urb\n", __func__); 666 urb = tdev->td_serial->port[0]->interrupt_in_urb; 667 if (!urb) { 668 dev_err(&port->dev, "%s - no interrupt urb\n", __func__); 669 status = -EINVAL; 670 goto release_lock; 671 } 672 urb->context = tdev; 673 status = usb_submit_urb(urb, GFP_KERNEL); 674 if (status) { 675 dev_err(&port->dev, "%s - submit interrupt urb failed, %d\n", __func__, status); 676 goto release_lock; 677 } 678 } 679 680 if (tty) 681 ti_set_termios(tty, port, &tty->termios); 682 683 status = ti_port_cmd_out(port, TI_OPEN_PORT, open_settings, NULL, 0); 684 if (status) { 685 dev_err(&port->dev, "%s - cannot send open command, %d\n", 686 __func__, status); 687 goto unlink_int_urb; 688 } 689 690 status = ti_port_cmd_out(port, TI_START_PORT, 0, NULL, 0); 691 if (status) { 692 dev_err(&port->dev, "%s - cannot send start command, %d\n", 693 __func__, status); 694 goto unlink_int_urb; 695 } 696 697 status = ti_port_cmd_out(port, TI_PURGE_PORT, TI_PURGE_INPUT, NULL, 0); 698 if (status) { 699 dev_err(&port->dev, "%s - cannot clear input buffers, %d\n", 700 __func__, status); 701 goto unlink_int_urb; 702 } 703 status = ti_port_cmd_out(port, TI_PURGE_PORT, TI_PURGE_OUTPUT, NULL, 0); 704 if (status) { 705 dev_err(&port->dev, "%s - cannot clear output buffers, %d\n", 706 __func__, status); 707 goto unlink_int_urb; 708 } 709 710 /* reset the data toggle on the bulk endpoints to work around bug in 711 * host controllers where things get out of sync some times */ 712 usb_clear_halt(dev, port->write_urb->pipe); 713 usb_clear_halt(dev, port->read_urb->pipe); 714 715 if (tty) 716 ti_set_termios(tty, port, &tty->termios); 717 718 status = ti_port_cmd_out(port, TI_OPEN_PORT, open_settings, NULL, 0); 719 if (status) { 720 dev_err(&port->dev, "%s - cannot send open command (2), %d\n", 721 __func__, status); 722 goto unlink_int_urb; 723 } 724 725 status = ti_port_cmd_out(port, TI_START_PORT, 0, NULL, 0); 726 if (status) { 727 dev_err(&port->dev, "%s - cannot send start command (2), %d\n", 728 __func__, status); 729 goto unlink_int_urb; 730 } 731 732 /* start read urb */ 733 urb = port->read_urb; 734 if (!urb) { 735 dev_err(&port->dev, "%s - no read urb\n", __func__); 736 status = -EINVAL; 737 goto unlink_int_urb; 738 } 739 tport->tp_read_urb_state = TI_READ_URB_RUNNING; 740 urb->context = tport; 741 status = usb_submit_urb(urb, GFP_KERNEL); 742 if (status) { 743 dev_err(&port->dev, "%s - submit read urb failed, %d\n", 744 __func__, status); 745 goto unlink_int_urb; 746 } 747 748 tport->tp_is_open = 1; 749 ++tdev->td_open_port_count; 750 751 goto release_lock; 752 753 unlink_int_urb: 754 if (tdev->td_open_port_count == 0) 755 usb_kill_urb(port->serial->port[0]->interrupt_in_urb); 756 release_lock: 757 mutex_unlock(&tdev->td_open_close_lock); 758 return status; 759 } 760 761 ti_close(struct usb_serial_port * port)762 static void ti_close(struct usb_serial_port *port) 763 { 764 struct ti_device *tdev; 765 struct ti_port *tport; 766 int status; 767 unsigned long flags; 768 769 tdev = usb_get_serial_data(port->serial); 770 tport = usb_get_serial_port_data(port); 771 772 tport->tp_is_open = 0; 773 774 usb_kill_urb(port->read_urb); 775 usb_kill_urb(port->write_urb); 776 tport->tp_write_urb_in_use = 0; 777 spin_lock_irqsave(&tport->tp_lock, flags); 778 kfifo_reset_out(&port->write_fifo); 779 spin_unlock_irqrestore(&tport->tp_lock, flags); 780 781 status = ti_port_cmd_out(port, TI_CLOSE_PORT, 0, NULL, 0); 782 if (status) 783 dev_err(&port->dev, 784 "%s - cannot send close port command, %d\n" 785 , __func__, status); 786 787 mutex_lock(&tdev->td_open_close_lock); 788 --tdev->td_open_port_count; 789 if (tdev->td_open_port_count == 0) { 790 /* last port is closed, shut down interrupt urb */ 791 usb_kill_urb(port->serial->port[0]->interrupt_in_urb); 792 } 793 mutex_unlock(&tdev->td_open_close_lock); 794 } 795 796 ti_write(struct tty_struct * tty,struct usb_serial_port * port,const unsigned char * data,int count)797 static int ti_write(struct tty_struct *tty, struct usb_serial_port *port, 798 const unsigned char *data, int count) 799 { 800 struct ti_port *tport = usb_get_serial_port_data(port); 801 802 if (count == 0) { 803 return 0; 804 } 805 806 if (!tport->tp_is_open) 807 return -ENODEV; 808 809 count = kfifo_in_locked(&port->write_fifo, data, count, 810 &tport->tp_lock); 811 ti_send(tport); 812 813 return count; 814 } 815 816 ti_write_room(struct tty_struct * tty)817 static unsigned int ti_write_room(struct tty_struct *tty) 818 { 819 struct usb_serial_port *port = tty->driver_data; 820 struct ti_port *tport = usb_get_serial_port_data(port); 821 unsigned int room; 822 unsigned long flags; 823 824 spin_lock_irqsave(&tport->tp_lock, flags); 825 room = kfifo_avail(&port->write_fifo); 826 spin_unlock_irqrestore(&tport->tp_lock, flags); 827 828 dev_dbg(&port->dev, "%s - returns %u\n", __func__, room); 829 return room; 830 } 831 832 ti_chars_in_buffer(struct tty_struct * tty)833 static unsigned int ti_chars_in_buffer(struct tty_struct *tty) 834 { 835 struct usb_serial_port *port = tty->driver_data; 836 struct ti_port *tport = usb_get_serial_port_data(port); 837 unsigned int chars; 838 unsigned long flags; 839 840 spin_lock_irqsave(&tport->tp_lock, flags); 841 chars = kfifo_len(&port->write_fifo); 842 spin_unlock_irqrestore(&tport->tp_lock, flags); 843 844 dev_dbg(&port->dev, "%s - returns %u\n", __func__, chars); 845 return chars; 846 } 847 ti_tx_empty(struct usb_serial_port * port)848 static bool ti_tx_empty(struct usb_serial_port *port) 849 { 850 struct ti_port *tport = usb_get_serial_port_data(port); 851 u8 lsr, mask; 852 int ret; 853 854 /* 855 * TUSB5052 does not have the TEMT bit to tell if the shift register 856 * is empty. 857 */ 858 if (tport->tp_tdev->td_is_3410) 859 mask = TI_LSR_TX_EMPTY_BOTH; 860 else 861 mask = TI_LSR_TX_EMPTY; 862 863 ret = ti_get_lsr(tport, &lsr); 864 if (!ret && !(lsr & mask)) 865 return false; 866 867 return true; 868 } 869 ti_throttle(struct tty_struct * tty)870 static void ti_throttle(struct tty_struct *tty) 871 { 872 struct usb_serial_port *port = tty->driver_data; 873 struct ti_port *tport = usb_get_serial_port_data(port); 874 875 if (I_IXOFF(tty) || C_CRTSCTS(tty)) 876 ti_stop_read(tport, tty); 877 878 } 879 880 ti_unthrottle(struct tty_struct * tty)881 static void ti_unthrottle(struct tty_struct *tty) 882 { 883 struct usb_serial_port *port = tty->driver_data; 884 struct ti_port *tport = usb_get_serial_port_data(port); 885 int status; 886 887 if (I_IXOFF(tty) || C_CRTSCTS(tty)) { 888 status = ti_restart_read(tport, tty); 889 if (status) 890 dev_err(&port->dev, "%s - cannot restart read, %d\n", 891 __func__, status); 892 } 893 } 894 ti_set_termios(struct tty_struct * tty,struct usb_serial_port * port,const struct ktermios * old_termios)895 static void ti_set_termios(struct tty_struct *tty, 896 struct usb_serial_port *port, 897 const struct ktermios *old_termios) 898 { 899 struct ti_port *tport = usb_get_serial_port_data(port); 900 struct ti_uart_config *config; 901 int baud; 902 int status; 903 unsigned int mcr; 904 u16 wbaudrate; 905 u16 wflags = 0; 906 907 config = kmalloc(sizeof(*config), GFP_KERNEL); 908 if (!config) 909 return; 910 911 /* these flags must be set */ 912 wflags |= TI_UART_ENABLE_MS_INTS; 913 wflags |= TI_UART_ENABLE_AUTO_START_DMA; 914 config->bUartMode = tport->tp_uart_mode; 915 916 switch (C_CSIZE(tty)) { 917 case CS5: 918 config->bDataBits = TI_UART_5_DATA_BITS; 919 break; 920 case CS6: 921 config->bDataBits = TI_UART_6_DATA_BITS; 922 break; 923 case CS7: 924 config->bDataBits = TI_UART_7_DATA_BITS; 925 break; 926 default: 927 case CS8: 928 config->bDataBits = TI_UART_8_DATA_BITS; 929 break; 930 } 931 932 /* CMSPAR isn't supported by this driver */ 933 tty->termios.c_cflag &= ~CMSPAR; 934 935 if (C_PARENB(tty)) { 936 if (C_PARODD(tty)) { 937 wflags |= TI_UART_ENABLE_PARITY_CHECKING; 938 config->bParity = TI_UART_ODD_PARITY; 939 } else { 940 wflags |= TI_UART_ENABLE_PARITY_CHECKING; 941 config->bParity = TI_UART_EVEN_PARITY; 942 } 943 } else { 944 wflags &= ~TI_UART_ENABLE_PARITY_CHECKING; 945 config->bParity = TI_UART_NO_PARITY; 946 } 947 948 if (C_CSTOPB(tty)) 949 config->bStopBits = TI_UART_2_STOP_BITS; 950 else 951 config->bStopBits = TI_UART_1_STOP_BITS; 952 953 if (C_CRTSCTS(tty)) { 954 /* RTS flow control must be off to drop RTS for baud rate B0 */ 955 if ((C_BAUD(tty)) != B0) 956 wflags |= TI_UART_ENABLE_RTS_IN; 957 wflags |= TI_UART_ENABLE_CTS_OUT; 958 } else { 959 ti_restart_read(tport, tty); 960 } 961 962 if (I_IXOFF(tty) || I_IXON(tty)) { 963 config->cXon = START_CHAR(tty); 964 config->cXoff = STOP_CHAR(tty); 965 966 if (I_IXOFF(tty)) 967 wflags |= TI_UART_ENABLE_X_IN; 968 else 969 ti_restart_read(tport, tty); 970 971 if (I_IXON(tty)) 972 wflags |= TI_UART_ENABLE_X_OUT; 973 } 974 975 baud = tty_get_baud_rate(tty); 976 if (!baud) 977 baud = 9600; 978 if (tport->tp_tdev->td_is_3410) 979 wbaudrate = (923077 + baud/2) / baud; 980 else 981 wbaudrate = (461538 + baud/2) / baud; 982 983 /* FIXME: Should calculate resulting baud here and report it back */ 984 if ((C_BAUD(tty)) != B0) 985 tty_encode_baud_rate(tty, baud, baud); 986 987 dev_dbg(&port->dev, 988 "%s - BaudRate=%d, wBaudRate=%d, wFlags=0x%04X, bDataBits=%d, bParity=%d, bStopBits=%d, cXon=%d, cXoff=%d, bUartMode=%d\n", 989 __func__, baud, wbaudrate, wflags, 990 config->bDataBits, config->bParity, config->bStopBits, 991 config->cXon, config->cXoff, config->bUartMode); 992 993 config->wBaudRate = cpu_to_be16(wbaudrate); 994 config->wFlags = cpu_to_be16(wflags); 995 996 status = ti_port_cmd_out(port, TI_SET_CONFIG, 0, config, 997 sizeof(*config)); 998 if (status) 999 dev_err(&port->dev, "%s - cannot set config on port %d, %d\n", 1000 __func__, port->port_number, status); 1001 1002 /* SET_CONFIG asserts RTS and DTR, reset them correctly */ 1003 mcr = tport->tp_shadow_mcr; 1004 /* if baud rate is B0, clear RTS and DTR */ 1005 if (C_BAUD(tty) == B0) 1006 mcr &= ~(TI_MCR_DTR | TI_MCR_RTS); 1007 status = ti_set_mcr(tport, mcr); 1008 if (status) 1009 dev_err(&port->dev, "%s - cannot set modem control on port %d, %d\n", 1010 __func__, port->port_number, status); 1011 1012 kfree(config); 1013 } 1014 1015 ti_tiocmget(struct tty_struct * tty)1016 static int ti_tiocmget(struct tty_struct *tty) 1017 { 1018 struct usb_serial_port *port = tty->driver_data; 1019 struct ti_port *tport = usb_get_serial_port_data(port); 1020 unsigned int result; 1021 unsigned int msr; 1022 unsigned int mcr; 1023 unsigned long flags; 1024 1025 spin_lock_irqsave(&tport->tp_lock, flags); 1026 msr = tport->tp_msr; 1027 mcr = tport->tp_shadow_mcr; 1028 spin_unlock_irqrestore(&tport->tp_lock, flags); 1029 1030 result = ((mcr & TI_MCR_DTR) ? TIOCM_DTR : 0) 1031 | ((mcr & TI_MCR_RTS) ? TIOCM_RTS : 0) 1032 | ((mcr & TI_MCR_LOOP) ? TIOCM_LOOP : 0) 1033 | ((msr & TI_MSR_CTS) ? TIOCM_CTS : 0) 1034 | ((msr & TI_MSR_CD) ? TIOCM_CAR : 0) 1035 | ((msr & TI_MSR_RI) ? TIOCM_RI : 0) 1036 | ((msr & TI_MSR_DSR) ? TIOCM_DSR : 0); 1037 1038 dev_dbg(&port->dev, "%s - 0x%04X\n", __func__, result); 1039 1040 return result; 1041 } 1042 1043 ti_tiocmset(struct tty_struct * tty,unsigned int set,unsigned int clear)1044 static int ti_tiocmset(struct tty_struct *tty, 1045 unsigned int set, unsigned int clear) 1046 { 1047 struct usb_serial_port *port = tty->driver_data; 1048 struct ti_port *tport = usb_get_serial_port_data(port); 1049 unsigned int mcr; 1050 unsigned long flags; 1051 1052 spin_lock_irqsave(&tport->tp_lock, flags); 1053 mcr = tport->tp_shadow_mcr; 1054 1055 if (set & TIOCM_RTS) 1056 mcr |= TI_MCR_RTS; 1057 if (set & TIOCM_DTR) 1058 mcr |= TI_MCR_DTR; 1059 if (set & TIOCM_LOOP) 1060 mcr |= TI_MCR_LOOP; 1061 1062 if (clear & TIOCM_RTS) 1063 mcr &= ~TI_MCR_RTS; 1064 if (clear & TIOCM_DTR) 1065 mcr &= ~TI_MCR_DTR; 1066 if (clear & TIOCM_LOOP) 1067 mcr &= ~TI_MCR_LOOP; 1068 spin_unlock_irqrestore(&tport->tp_lock, flags); 1069 1070 return ti_set_mcr(tport, mcr); 1071 } 1072 1073 ti_break(struct tty_struct * tty,int break_state)1074 static int ti_break(struct tty_struct *tty, int break_state) 1075 { 1076 struct usb_serial_port *port = tty->driver_data; 1077 struct ti_port *tport = usb_get_serial_port_data(port); 1078 int status; 1079 1080 dev_dbg(&port->dev, "%s - state = %d\n", __func__, break_state); 1081 1082 status = ti_write_byte(port, tport->tp_tdev, 1083 tport->tp_uart_base_addr + TI_UART_OFFSET_LCR, 1084 TI_LCR_BREAK, break_state == -1 ? TI_LCR_BREAK : 0); 1085 1086 if (status) { 1087 dev_dbg(&port->dev, "%s - error setting break, %d\n", __func__, status); 1088 return status; 1089 } 1090 1091 return 0; 1092 } 1093 ti_get_port_from_code(unsigned char code)1094 static int ti_get_port_from_code(unsigned char code) 1095 { 1096 return (code >> 6) & 0x01; 1097 } 1098 ti_get_func_from_code(unsigned char code)1099 static int ti_get_func_from_code(unsigned char code) 1100 { 1101 return code & 0x0f; 1102 } 1103 ti_interrupt_callback(struct urb * urb)1104 static void ti_interrupt_callback(struct urb *urb) 1105 { 1106 struct ti_device *tdev = urb->context; 1107 struct usb_serial_port *port; 1108 struct usb_serial *serial = tdev->td_serial; 1109 struct ti_port *tport; 1110 struct device *dev = &urb->dev->dev; 1111 unsigned char *data = urb->transfer_buffer; 1112 int length = urb->actual_length; 1113 int port_number; 1114 int function; 1115 int status = urb->status; 1116 int retval; 1117 u8 msr; 1118 1119 switch (status) { 1120 case 0: 1121 break; 1122 case -ECONNRESET: 1123 case -ENOENT: 1124 case -ESHUTDOWN: 1125 dev_dbg(dev, "%s - urb shutting down, %d\n", __func__, status); 1126 return; 1127 default: 1128 dev_err(dev, "%s - nonzero urb status, %d\n", __func__, status); 1129 goto exit; 1130 } 1131 1132 if (length != 2) { 1133 dev_dbg(dev, "%s - bad packet size, %d\n", __func__, length); 1134 goto exit; 1135 } 1136 1137 if (data[0] == TI_CODE_HARDWARE_ERROR) { 1138 dev_err(dev, "%s - hardware error, %d\n", __func__, data[1]); 1139 goto exit; 1140 } 1141 1142 port_number = ti_get_port_from_code(data[0]); 1143 function = ti_get_func_from_code(data[0]); 1144 1145 dev_dbg(dev, "%s - port_number %d, function %d, data 0x%02X\n", 1146 __func__, port_number, function, data[1]); 1147 1148 if (port_number >= serial->num_ports) { 1149 dev_err(dev, "%s - bad port number, %d\n", 1150 __func__, port_number); 1151 goto exit; 1152 } 1153 1154 port = serial->port[port_number]; 1155 1156 tport = usb_get_serial_port_data(port); 1157 if (!tport) 1158 goto exit; 1159 1160 switch (function) { 1161 case TI_CODE_DATA_ERROR: 1162 dev_err(dev, "%s - DATA ERROR, port %d, data 0x%02X\n", 1163 __func__, port_number, data[1]); 1164 break; 1165 1166 case TI_CODE_MODEM_STATUS: 1167 msr = data[1]; 1168 dev_dbg(dev, "%s - port %d, msr 0x%02X\n", __func__, port_number, msr); 1169 ti_handle_new_msr(tport, msr); 1170 break; 1171 1172 default: 1173 dev_err(dev, "%s - unknown interrupt code, 0x%02X\n", 1174 __func__, data[1]); 1175 break; 1176 } 1177 1178 exit: 1179 retval = usb_submit_urb(urb, GFP_ATOMIC); 1180 if (retval) 1181 dev_err(dev, "%s - resubmit interrupt urb failed, %d\n", 1182 __func__, retval); 1183 } 1184 1185 ti_bulk_in_callback(struct urb * urb)1186 static void ti_bulk_in_callback(struct urb *urb) 1187 { 1188 struct ti_port *tport = urb->context; 1189 struct usb_serial_port *port = tport->tp_port; 1190 struct device *dev = &urb->dev->dev; 1191 int status = urb->status; 1192 unsigned long flags; 1193 int retval = 0; 1194 1195 switch (status) { 1196 case 0: 1197 break; 1198 case -ECONNRESET: 1199 case -ENOENT: 1200 case -ESHUTDOWN: 1201 dev_dbg(dev, "%s - urb shutting down, %d\n", __func__, status); 1202 return; 1203 default: 1204 dev_err(dev, "%s - nonzero urb status, %d\n", 1205 __func__, status); 1206 } 1207 1208 if (status == -EPIPE) 1209 goto exit; 1210 1211 if (status) { 1212 dev_err(dev, "%s - stopping read!\n", __func__); 1213 return; 1214 } 1215 1216 if (urb->actual_length) { 1217 usb_serial_debug_data(dev, __func__, urb->actual_length, 1218 urb->transfer_buffer); 1219 1220 if (!tport->tp_is_open) 1221 dev_dbg(dev, "%s - port closed, dropping data\n", 1222 __func__); 1223 else 1224 ti_recv(port, urb->transfer_buffer, urb->actual_length); 1225 spin_lock_irqsave(&tport->tp_lock, flags); 1226 port->icount.rx += urb->actual_length; 1227 spin_unlock_irqrestore(&tport->tp_lock, flags); 1228 } 1229 1230 exit: 1231 /* continue to read unless stopping */ 1232 spin_lock_irqsave(&tport->tp_lock, flags); 1233 if (tport->tp_read_urb_state == TI_READ_URB_RUNNING) 1234 retval = usb_submit_urb(urb, GFP_ATOMIC); 1235 else if (tport->tp_read_urb_state == TI_READ_URB_STOPPING) 1236 tport->tp_read_urb_state = TI_READ_URB_STOPPED; 1237 1238 spin_unlock_irqrestore(&tport->tp_lock, flags); 1239 if (retval) 1240 dev_err(dev, "%s - resubmit read urb failed, %d\n", 1241 __func__, retval); 1242 } 1243 1244 ti_bulk_out_callback(struct urb * urb)1245 static void ti_bulk_out_callback(struct urb *urb) 1246 { 1247 struct ti_port *tport = urb->context; 1248 struct usb_serial_port *port = tport->tp_port; 1249 int status = urb->status; 1250 1251 tport->tp_write_urb_in_use = 0; 1252 1253 switch (status) { 1254 case 0: 1255 break; 1256 case -ECONNRESET: 1257 case -ENOENT: 1258 case -ESHUTDOWN: 1259 dev_dbg(&port->dev, "%s - urb shutting down, %d\n", __func__, status); 1260 return; 1261 default: 1262 dev_err_console(port, "%s - nonzero urb status, %d\n", 1263 __func__, status); 1264 } 1265 1266 /* send any buffered data */ 1267 ti_send(tport); 1268 } 1269 1270 ti_recv(struct usb_serial_port * port,unsigned char * data,int length)1271 static void ti_recv(struct usb_serial_port *port, unsigned char *data, 1272 int length) 1273 { 1274 int cnt; 1275 1276 do { 1277 cnt = tty_insert_flip_string(&port->port, data, length); 1278 if (cnt < length) { 1279 dev_err(&port->dev, "%s - dropping data, %d bytes lost\n", 1280 __func__, length - cnt); 1281 if (cnt == 0) 1282 break; 1283 } 1284 tty_flip_buffer_push(&port->port); 1285 data += cnt; 1286 length -= cnt; 1287 } while (length > 0); 1288 } 1289 1290 ti_send(struct ti_port * tport)1291 static void ti_send(struct ti_port *tport) 1292 { 1293 int count, result; 1294 struct usb_serial_port *port = tport->tp_port; 1295 unsigned long flags; 1296 1297 spin_lock_irqsave(&tport->tp_lock, flags); 1298 1299 if (tport->tp_write_urb_in_use) 1300 goto unlock; 1301 1302 count = kfifo_out(&port->write_fifo, 1303 port->write_urb->transfer_buffer, 1304 port->bulk_out_size); 1305 1306 if (count == 0) 1307 goto unlock; 1308 1309 tport->tp_write_urb_in_use = 1; 1310 1311 spin_unlock_irqrestore(&tport->tp_lock, flags); 1312 1313 usb_serial_debug_data(&port->dev, __func__, count, 1314 port->write_urb->transfer_buffer); 1315 1316 usb_fill_bulk_urb(port->write_urb, port->serial->dev, 1317 usb_sndbulkpipe(port->serial->dev, 1318 port->bulk_out_endpointAddress), 1319 port->write_urb->transfer_buffer, count, 1320 ti_bulk_out_callback, tport); 1321 1322 result = usb_submit_urb(port->write_urb, GFP_ATOMIC); 1323 if (result) { 1324 dev_err_console(port, "%s - submit write urb failed, %d\n", 1325 __func__, result); 1326 tport->tp_write_urb_in_use = 0; 1327 /* TODO: reschedule ti_send */ 1328 } else { 1329 spin_lock_irqsave(&tport->tp_lock, flags); 1330 port->icount.tx += count; 1331 spin_unlock_irqrestore(&tport->tp_lock, flags); 1332 } 1333 1334 /* more room in the buffer for new writes, wakeup */ 1335 tty_port_tty_wakeup(&port->port); 1336 1337 return; 1338 unlock: 1339 spin_unlock_irqrestore(&tport->tp_lock, flags); 1340 return; 1341 } 1342 1343 ti_set_mcr(struct ti_port * tport,unsigned int mcr)1344 static int ti_set_mcr(struct ti_port *tport, unsigned int mcr) 1345 { 1346 unsigned long flags; 1347 int status; 1348 1349 status = ti_write_byte(tport->tp_port, tport->tp_tdev, 1350 tport->tp_uart_base_addr + TI_UART_OFFSET_MCR, 1351 TI_MCR_RTS | TI_MCR_DTR | TI_MCR_LOOP, mcr); 1352 1353 spin_lock_irqsave(&tport->tp_lock, flags); 1354 if (!status) 1355 tport->tp_shadow_mcr = mcr; 1356 spin_unlock_irqrestore(&tport->tp_lock, flags); 1357 1358 return status; 1359 } 1360 1361 ti_get_lsr(struct ti_port * tport,u8 * lsr)1362 static int ti_get_lsr(struct ti_port *tport, u8 *lsr) 1363 { 1364 int size, status; 1365 struct usb_serial_port *port = tport->tp_port; 1366 struct ti_port_status *data; 1367 1368 size = sizeof(struct ti_port_status); 1369 data = kmalloc(size, GFP_KERNEL); 1370 if (!data) 1371 return -ENOMEM; 1372 1373 status = ti_port_cmd_in(port, TI_GET_PORT_STATUS, 0, data, size); 1374 if (status) { 1375 dev_err(&port->dev, 1376 "%s - get port status command failed, %d\n", 1377 __func__, status); 1378 goto free_data; 1379 } 1380 1381 dev_dbg(&port->dev, "%s - lsr 0x%02X\n", __func__, data->bLSR); 1382 1383 *lsr = data->bLSR; 1384 1385 free_data: 1386 kfree(data); 1387 return status; 1388 } 1389 1390 ti_get_serial_info(struct tty_struct * tty,struct serial_struct * ss)1391 static void ti_get_serial_info(struct tty_struct *tty, struct serial_struct *ss) 1392 { 1393 struct usb_serial_port *port = tty->driver_data; 1394 struct ti_port *tport = usb_get_serial_port_data(port); 1395 1396 ss->baud_base = tport->tp_tdev->td_is_3410 ? 921600 : 460800; 1397 } 1398 1399 ti_handle_new_msr(struct ti_port * tport,u8 msr)1400 static void ti_handle_new_msr(struct ti_port *tport, u8 msr) 1401 { 1402 struct async_icount *icount; 1403 struct tty_struct *tty; 1404 unsigned long flags; 1405 1406 dev_dbg(&tport->tp_port->dev, "%s - msr 0x%02X\n", __func__, msr); 1407 1408 if (msr & TI_MSR_DELTA_MASK) { 1409 spin_lock_irqsave(&tport->tp_lock, flags); 1410 icount = &tport->tp_port->icount; 1411 if (msr & TI_MSR_DELTA_CTS) 1412 icount->cts++; 1413 if (msr & TI_MSR_DELTA_DSR) 1414 icount->dsr++; 1415 if (msr & TI_MSR_DELTA_CD) 1416 icount->dcd++; 1417 if (msr & TI_MSR_DELTA_RI) 1418 icount->rng++; 1419 wake_up_interruptible(&tport->tp_port->port.delta_msr_wait); 1420 spin_unlock_irqrestore(&tport->tp_lock, flags); 1421 } 1422 1423 tport->tp_msr = msr & TI_MSR_MASK; 1424 1425 /* handle CTS flow control */ 1426 tty = tty_port_tty_get(&tport->tp_port->port); 1427 if (tty && C_CRTSCTS(tty)) { 1428 if (msr & TI_MSR_CTS) 1429 tty_wakeup(tty); 1430 } 1431 tty_kref_put(tty); 1432 } 1433 1434 ti_stop_read(struct ti_port * tport,struct tty_struct * tty)1435 static void ti_stop_read(struct ti_port *tport, struct tty_struct *tty) 1436 { 1437 unsigned long flags; 1438 1439 spin_lock_irqsave(&tport->tp_lock, flags); 1440 1441 if (tport->tp_read_urb_state == TI_READ_URB_RUNNING) 1442 tport->tp_read_urb_state = TI_READ_URB_STOPPING; 1443 1444 spin_unlock_irqrestore(&tport->tp_lock, flags); 1445 } 1446 1447 ti_restart_read(struct ti_port * tport,struct tty_struct * tty)1448 static int ti_restart_read(struct ti_port *tport, struct tty_struct *tty) 1449 { 1450 struct urb *urb; 1451 int status = 0; 1452 unsigned long flags; 1453 1454 spin_lock_irqsave(&tport->tp_lock, flags); 1455 1456 if (tport->tp_read_urb_state == TI_READ_URB_STOPPED) { 1457 tport->tp_read_urb_state = TI_READ_URB_RUNNING; 1458 urb = tport->tp_port->read_urb; 1459 spin_unlock_irqrestore(&tport->tp_lock, flags); 1460 urb->context = tport; 1461 status = usb_submit_urb(urb, GFP_KERNEL); 1462 } else { 1463 tport->tp_read_urb_state = TI_READ_URB_RUNNING; 1464 spin_unlock_irqrestore(&tport->tp_lock, flags); 1465 } 1466 1467 return status; 1468 } 1469 ti_command_out_sync(struct usb_device * udev,u8 command,u16 moduleid,u16 value,void * data,int size)1470 static int ti_command_out_sync(struct usb_device *udev, u8 command, 1471 u16 moduleid, u16 value, void *data, int size) 1472 { 1473 int status; 1474 1475 status = usb_control_msg(udev, usb_sndctrlpipe(udev, 0), command, 1476 USB_TYPE_VENDOR | USB_RECIP_DEVICE | USB_DIR_OUT, 1477 value, moduleid, data, size, 1000); 1478 if (status < 0) 1479 return status; 1480 1481 return 0; 1482 } 1483 ti_command_in_sync(struct usb_device * udev,u8 command,u16 moduleid,u16 value,void * data,int size)1484 static int ti_command_in_sync(struct usb_device *udev, u8 command, 1485 u16 moduleid, u16 value, void *data, int size) 1486 { 1487 int status; 1488 1489 status = usb_control_msg(udev, usb_rcvctrlpipe(udev, 0), command, 1490 USB_TYPE_VENDOR | USB_RECIP_DEVICE | USB_DIR_IN, 1491 value, moduleid, data, size, 1000); 1492 if (status == size) 1493 status = 0; 1494 else if (status >= 0) 1495 status = -ECOMM; 1496 1497 return status; 1498 } 1499 ti_port_cmd_out(struct usb_serial_port * port,u8 command,u16 value,void * data,int size)1500 static int ti_port_cmd_out(struct usb_serial_port *port, u8 command, 1501 u16 value, void *data, int size) 1502 { 1503 return ti_command_out_sync(port->serial->dev, command, 1504 TI_UART1_PORT + port->port_number, 1505 value, data, size); 1506 } 1507 ti_port_cmd_in(struct usb_serial_port * port,u8 command,u16 value,void * data,int size)1508 static int ti_port_cmd_in(struct usb_serial_port *port, u8 command, 1509 u16 value, void *data, int size) 1510 { 1511 return ti_command_in_sync(port->serial->dev, command, 1512 TI_UART1_PORT + port->port_number, 1513 value, data, size); 1514 } 1515 ti_write_byte(struct usb_serial_port * port,struct ti_device * tdev,unsigned long addr,u8 mask,u8 byte)1516 static int ti_write_byte(struct usb_serial_port *port, 1517 struct ti_device *tdev, unsigned long addr, 1518 u8 mask, u8 byte) 1519 { 1520 int status; 1521 unsigned int size; 1522 struct ti_write_data_bytes *data; 1523 1524 dev_dbg(&port->dev, "%s - addr 0x%08lX, mask 0x%02X, byte 0x%02X\n", __func__, 1525 addr, mask, byte); 1526 1527 size = sizeof(struct ti_write_data_bytes) + 2; 1528 data = kmalloc(size, GFP_KERNEL); 1529 if (!data) 1530 return -ENOMEM; 1531 1532 data->bAddrType = TI_RW_DATA_ADDR_XDATA; 1533 data->bDataType = TI_RW_DATA_BYTE; 1534 data->bDataCounter = 1; 1535 data->wBaseAddrHi = cpu_to_be16(addr>>16); 1536 data->wBaseAddrLo = cpu_to_be16(addr); 1537 data->bData[0] = mask; 1538 data->bData[1] = byte; 1539 1540 status = ti_command_out_sync(port->serial->dev, TI_WRITE_DATA, 1541 TI_RAM_PORT, 0, data, size); 1542 if (status < 0) 1543 dev_err(&port->dev, "%s - failed, %d\n", __func__, status); 1544 1545 kfree(data); 1546 1547 return status; 1548 } 1549 ti_do_download(struct usb_device * dev,int pipe,u8 * buffer,int size)1550 static int ti_do_download(struct usb_device *dev, int pipe, 1551 u8 *buffer, int size) 1552 { 1553 int pos; 1554 u8 cs = 0; 1555 int done; 1556 struct ti_firmware_header *header; 1557 int status = 0; 1558 int len; 1559 1560 for (pos = sizeof(struct ti_firmware_header); pos < size; pos++) 1561 cs = (u8)(cs + buffer[pos]); 1562 1563 header = (struct ti_firmware_header *)buffer; 1564 header->wLength = cpu_to_le16(size - sizeof(*header)); 1565 header->bCheckSum = cs; 1566 1567 dev_dbg(&dev->dev, "%s - downloading firmware\n", __func__); 1568 for (pos = 0; pos < size; pos += done) { 1569 len = min(size - pos, TI_DOWNLOAD_MAX_PACKET_SIZE); 1570 status = usb_bulk_msg(dev, pipe, buffer + pos, len, 1571 &done, 1000); 1572 if (status) 1573 break; 1574 } 1575 return status; 1576 } 1577 ti_download_firmware(struct ti_device * tdev)1578 static int ti_download_firmware(struct ti_device *tdev) 1579 { 1580 int status; 1581 int buffer_size; 1582 u8 *buffer; 1583 struct usb_device *dev = tdev->td_serial->dev; 1584 unsigned int pipe = usb_sndbulkpipe(dev, 1585 tdev->td_serial->port[0]->bulk_out_endpointAddress); 1586 const struct firmware *fw_p; 1587 char buf[32]; 1588 1589 if (le16_to_cpu(dev->descriptor.idVendor) == MXU1_VENDOR_ID) { 1590 snprintf(buf, 1591 sizeof(buf), 1592 "moxa/moxa-%04x.fw", 1593 le16_to_cpu(dev->descriptor.idProduct)); 1594 1595 status = request_firmware(&fw_p, buf, &dev->dev); 1596 goto check_firmware; 1597 } 1598 1599 /* try ID specific firmware first, then try generic firmware */ 1600 sprintf(buf, "ti_usb-v%04x-p%04x.fw", 1601 le16_to_cpu(dev->descriptor.idVendor), 1602 le16_to_cpu(dev->descriptor.idProduct)); 1603 status = request_firmware(&fw_p, buf, &dev->dev); 1604 1605 if (status != 0) { 1606 buf[0] = '\0'; 1607 if (le16_to_cpu(dev->descriptor.idVendor) == MTS_VENDOR_ID) { 1608 switch (le16_to_cpu(dev->descriptor.idProduct)) { 1609 case MTS_CDMA_PRODUCT_ID: 1610 strcpy(buf, "mts_cdma.fw"); 1611 break; 1612 case MTS_GSM_PRODUCT_ID: 1613 strcpy(buf, "mts_gsm.fw"); 1614 break; 1615 case MTS_EDGE_PRODUCT_ID: 1616 strcpy(buf, "mts_edge.fw"); 1617 break; 1618 case MTS_MT9234MU_PRODUCT_ID: 1619 strcpy(buf, "mts_mt9234mu.fw"); 1620 break; 1621 case MTS_MT9234ZBA_PRODUCT_ID: 1622 strcpy(buf, "mts_mt9234zba.fw"); 1623 break; 1624 case MTS_MT9234ZBAOLD_PRODUCT_ID: 1625 strcpy(buf, "mts_mt9234zba.fw"); 1626 break; } 1627 } 1628 if (buf[0] == '\0') { 1629 if (tdev->td_is_3410) 1630 strcpy(buf, "ti_3410.fw"); 1631 else 1632 strcpy(buf, "ti_5052.fw"); 1633 } 1634 status = request_firmware(&fw_p, buf, &dev->dev); 1635 } 1636 1637 check_firmware: 1638 if (status) { 1639 dev_err(&dev->dev, "%s - firmware not found\n", __func__); 1640 return -ENOENT; 1641 } 1642 if (fw_p->size > TI_FIRMWARE_BUF_SIZE) { 1643 dev_err(&dev->dev, "%s - firmware too large %zu\n", __func__, fw_p->size); 1644 release_firmware(fw_p); 1645 return -ENOENT; 1646 } 1647 1648 buffer_size = TI_FIRMWARE_BUF_SIZE + sizeof(struct ti_firmware_header); 1649 buffer = kmalloc(buffer_size, GFP_KERNEL); 1650 if (buffer) { 1651 memcpy(buffer, fw_p->data, fw_p->size); 1652 memset(buffer + fw_p->size, 0xff, buffer_size - fw_p->size); 1653 status = ti_do_download(dev, pipe, buffer, fw_p->size); 1654 kfree(buffer); 1655 } else { 1656 status = -ENOMEM; 1657 } 1658 release_firmware(fw_p); 1659 if (status) { 1660 dev_err(&dev->dev, "%s - error downloading firmware, %d\n", 1661 __func__, status); 1662 return status; 1663 } 1664 1665 dev_dbg(&dev->dev, "%s - download successful\n", __func__); 1666 1667 return 0; 1668 } 1669