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 124 125 /* Line control */ 126 #define TI_LCR_BREAK 0x40 127 128 /* Modem control */ 129 #define TI_MCR_LOOP 0x04 130 #define TI_MCR_DTR 0x10 131 #define TI_MCR_RTS 0x20 132 133 /* Mask settings */ 134 #define TI_UART_ENABLE_RTS_IN 0x0001 135 #define TI_UART_DISABLE_RTS 0x0002 136 #define TI_UART_ENABLE_PARITY_CHECKING 0x0008 137 #define TI_UART_ENABLE_DSR_OUT 0x0010 138 #define TI_UART_ENABLE_CTS_OUT 0x0020 139 #define TI_UART_ENABLE_X_OUT 0x0040 140 #define TI_UART_ENABLE_XA_OUT 0x0080 141 #define TI_UART_ENABLE_X_IN 0x0100 142 #define TI_UART_ENABLE_DTR_IN 0x0800 143 #define TI_UART_DISABLE_DTR 0x1000 144 #define TI_UART_ENABLE_MS_INTS 0x2000 145 #define TI_UART_ENABLE_AUTO_START_DMA 0x4000 146 147 /* Parity */ 148 #define TI_UART_NO_PARITY 0x00 149 #define TI_UART_ODD_PARITY 0x01 150 #define TI_UART_EVEN_PARITY 0x02 151 #define TI_UART_MARK_PARITY 0x03 152 #define TI_UART_SPACE_PARITY 0x04 153 154 /* Stop bits */ 155 #define TI_UART_1_STOP_BITS 0x00 156 #define TI_UART_1_5_STOP_BITS 0x01 157 #define TI_UART_2_STOP_BITS 0x02 158 159 /* Bits per character */ 160 #define TI_UART_5_DATA_BITS 0x00 161 #define TI_UART_6_DATA_BITS 0x01 162 #define TI_UART_7_DATA_BITS 0x02 163 #define TI_UART_8_DATA_BITS 0x03 164 165 /* 232/485 modes */ 166 #define TI_UART_232 0x00 167 #define TI_UART_485_RECEIVER_DISABLED 0x01 168 #define TI_UART_485_RECEIVER_ENABLED 0x02 169 170 /* Pipe transfer mode and timeout */ 171 #define TI_PIPE_MODE_CONTINUOUS 0x01 172 #define TI_PIPE_MODE_MASK 0x03 173 #define TI_PIPE_TIMEOUT_MASK 0x7C 174 #define TI_PIPE_TIMEOUT_ENABLE 0x80 175 176 /* Config struct */ 177 struct ti_uart_config { 178 __be16 wBaudRate; 179 __be16 wFlags; 180 u8 bDataBits; 181 u8 bParity; 182 u8 bStopBits; 183 char cXon; 184 char cXoff; 185 u8 bUartMode; 186 } __packed; 187 188 /* Get port status */ 189 struct ti_port_status { 190 u8 bCmdCode; 191 u8 bModuleId; 192 u8 bErrorCode; 193 u8 bMSR; 194 u8 bLSR; 195 } __packed; 196 197 /* Purge modes */ 198 #define TI_PURGE_OUTPUT 0x00 199 #define TI_PURGE_INPUT 0x80 200 201 /* Read/Write data */ 202 #define TI_RW_DATA_ADDR_SFR 0x10 203 #define TI_RW_DATA_ADDR_IDATA 0x20 204 #define TI_RW_DATA_ADDR_XDATA 0x30 205 #define TI_RW_DATA_ADDR_CODE 0x40 206 #define TI_RW_DATA_ADDR_GPIO 0x50 207 #define TI_RW_DATA_ADDR_I2C 0x60 208 #define TI_RW_DATA_ADDR_FLASH 0x70 209 #define TI_RW_DATA_ADDR_DSP 0x80 210 211 #define TI_RW_DATA_UNSPECIFIED 0x00 212 #define TI_RW_DATA_BYTE 0x01 213 #define TI_RW_DATA_WORD 0x02 214 #define TI_RW_DATA_DOUBLE_WORD 0x04 215 216 struct ti_write_data_bytes { 217 u8 bAddrType; 218 u8 bDataType; 219 u8 bDataCounter; 220 __be16 wBaseAddrHi; 221 __be16 wBaseAddrLo; 222 u8 bData[]; 223 } __packed; 224 225 struct ti_read_data_request { 226 __u8 bAddrType; 227 __u8 bDataType; 228 __u8 bDataCounter; 229 __be16 wBaseAddrHi; 230 __be16 wBaseAddrLo; 231 } __packed; 232 233 struct ti_read_data_bytes { 234 __u8 bCmdCode; 235 __u8 bModuleId; 236 __u8 bErrorCode; 237 __u8 bData[]; 238 } __packed; 239 240 /* Interrupt struct */ 241 struct ti_interrupt { 242 __u8 bICode; 243 __u8 bIInfo; 244 } __packed; 245 246 /* Interrupt codes */ 247 #define TI_CODE_HARDWARE_ERROR 0xFF 248 #define TI_CODE_DATA_ERROR 0x03 249 #define TI_CODE_MODEM_STATUS 0x04 250 251 /* Download firmware max packet size */ 252 #define TI_DOWNLOAD_MAX_PACKET_SIZE 64 253 254 /* Firmware image header */ 255 struct ti_firmware_header { 256 __le16 wLength; 257 u8 bCheckSum; 258 } __packed; 259 260 /* UART addresses */ 261 #define TI_UART1_BASE_ADDR 0xFFA0 /* UART 1 base address */ 262 #define TI_UART2_BASE_ADDR 0xFFB0 /* UART 2 base address */ 263 #define TI_UART_OFFSET_LCR 0x0002 /* UART MCR register offset */ 264 #define TI_UART_OFFSET_MCR 0x0004 /* UART MCR register offset */ 265 266 #define TI_DRIVER_AUTHOR "Al Borchers <alborchers@steinerpoint.com>" 267 #define TI_DRIVER_DESC "TI USB 3410/5052 Serial Driver" 268 269 #define TI_FIRMWARE_BUF_SIZE 16284 270 271 #define TI_TRANSFER_TIMEOUT 2 272 273 #define TI_DEFAULT_CLOSING_WAIT 4000 /* in .01 secs */ 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 int ti_write_room(struct tty_struct *tty); 312 static int ti_chars_in_buffer(struct tty_struct *tty); 313 static bool ti_tx_empty(struct usb_serial_port *port); 314 static void ti_throttle(struct tty_struct *tty); 315 static void ti_unthrottle(struct tty_struct *tty); 316 static void ti_set_termios(struct tty_struct *tty, 317 struct usb_serial_port *port, struct ktermios *old_termios); 318 static int ti_tiocmget(struct tty_struct *tty); 319 static int ti_tiocmset(struct tty_struct *tty, 320 unsigned int set, unsigned int clear); 321 static void ti_break(struct tty_struct *tty, int break_state); 322 static void ti_interrupt_callback(struct urb *urb); 323 static void ti_bulk_in_callback(struct urb *urb); 324 static void ti_bulk_out_callback(struct urb *urb); 325 326 static void ti_recv(struct usb_serial_port *port, unsigned char *data, 327 int length); 328 static void ti_send(struct ti_port *tport); 329 static int ti_set_mcr(struct ti_port *tport, unsigned int mcr); 330 static int ti_get_lsr(struct ti_port *tport, u8 *lsr); 331 static int ti_get_serial_info(struct tty_struct *tty, 332 struct serial_struct *ss); 333 static int ti_set_serial_info(struct tty_struct *tty, 334 struct serial_struct *ss); 335 static void ti_handle_new_msr(struct ti_port *tport, u8 msr); 336 337 static void ti_stop_read(struct ti_port *tport, struct tty_struct *tty); 338 static int ti_restart_read(struct ti_port *tport, struct tty_struct *tty); 339 340 static int ti_command_out_sync(struct ti_device *tdev, __u8 command, 341 __u16 moduleid, __u16 value, __u8 *data, int size); 342 static int ti_command_in_sync(struct ti_device *tdev, __u8 command, 343 __u16 moduleid, __u16 value, __u8 *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 int closing_wait = TI_DEFAULT_CLOSING_WAIT; 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 { } /* terminator */ 376 }; 377 378 static const struct usb_device_id ti_id_table_5052[] = { 379 { USB_DEVICE(TI_VENDOR_ID, TI_5052_BOOT_PRODUCT_ID) }, 380 { USB_DEVICE(TI_VENDOR_ID, TI_5152_BOOT_PRODUCT_ID) }, 381 { USB_DEVICE(TI_VENDOR_ID, TI_5052_EEPROM_PRODUCT_ID) }, 382 { USB_DEVICE(TI_VENDOR_ID, TI_5052_FIRMWARE_PRODUCT_ID) }, 383 { } 384 }; 385 386 static const struct usb_device_id ti_id_table_combined[] = { 387 { USB_DEVICE(TI_VENDOR_ID, TI_3410_PRODUCT_ID) }, 388 { USB_DEVICE(TI_VENDOR_ID, TI_3410_EZ430_ID) }, 389 { USB_DEVICE(MTS_VENDOR_ID, MTS_GSM_NO_FW_PRODUCT_ID) }, 390 { USB_DEVICE(MTS_VENDOR_ID, MTS_CDMA_NO_FW_PRODUCT_ID) }, 391 { USB_DEVICE(MTS_VENDOR_ID, MTS_CDMA_PRODUCT_ID) }, 392 { USB_DEVICE(MTS_VENDOR_ID, MTS_GSM_PRODUCT_ID) }, 393 { USB_DEVICE(MTS_VENDOR_ID, MTS_EDGE_PRODUCT_ID) }, 394 { USB_DEVICE(MTS_VENDOR_ID, MTS_MT9234MU_PRODUCT_ID) }, 395 { USB_DEVICE(MTS_VENDOR_ID, MTS_MT9234ZBA_PRODUCT_ID) }, 396 { USB_DEVICE(MTS_VENDOR_ID, MTS_MT9234ZBAOLD_PRODUCT_ID) }, 397 { USB_DEVICE(TI_VENDOR_ID, TI_5052_BOOT_PRODUCT_ID) }, 398 { USB_DEVICE(TI_VENDOR_ID, TI_5152_BOOT_PRODUCT_ID) }, 399 { USB_DEVICE(TI_VENDOR_ID, TI_5052_EEPROM_PRODUCT_ID) }, 400 { USB_DEVICE(TI_VENDOR_ID, TI_5052_FIRMWARE_PRODUCT_ID) }, 401 { USB_DEVICE(IBM_VENDOR_ID, IBM_4543_PRODUCT_ID) }, 402 { USB_DEVICE(IBM_VENDOR_ID, IBM_454B_PRODUCT_ID) }, 403 { USB_DEVICE(IBM_VENDOR_ID, IBM_454C_PRODUCT_ID) }, 404 { USB_DEVICE(ABBOTT_VENDOR_ID, ABBOTT_PRODUCT_ID) }, 405 { USB_DEVICE(ABBOTT_VENDOR_ID, ABBOTT_STRIP_PORT_ID) }, 406 { USB_DEVICE(TI_VENDOR_ID, FRI2_PRODUCT_ID) }, 407 { USB_DEVICE(HONEYWELL_VENDOR_ID, HONEYWELL_HGI80_PRODUCT_ID) }, 408 { USB_DEVICE(MXU1_VENDOR_ID, MXU1_1110_PRODUCT_ID) }, 409 { USB_DEVICE(MXU1_VENDOR_ID, MXU1_1130_PRODUCT_ID) }, 410 { USB_DEVICE(MXU1_VENDOR_ID, MXU1_1131_PRODUCT_ID) }, 411 { USB_DEVICE(MXU1_VENDOR_ID, MXU1_1150_PRODUCT_ID) }, 412 { USB_DEVICE(MXU1_VENDOR_ID, MXU1_1151_PRODUCT_ID) }, 413 { } /* terminator */ 414 }; 415 416 static struct usb_serial_driver ti_1port_device = { 417 .driver = { 418 .owner = THIS_MODULE, 419 .name = "ti_usb_3410_5052_1", 420 }, 421 .description = "TI USB 3410 1 port adapter", 422 .id_table = ti_id_table_3410, 423 .num_ports = 1, 424 .num_bulk_out = 1, 425 .attach = ti_startup, 426 .release = ti_release, 427 .port_probe = ti_port_probe, 428 .port_remove = ti_port_remove, 429 .open = ti_open, 430 .close = ti_close, 431 .write = ti_write, 432 .write_room = ti_write_room, 433 .chars_in_buffer = ti_chars_in_buffer, 434 .tx_empty = ti_tx_empty, 435 .throttle = ti_throttle, 436 .unthrottle = ti_unthrottle, 437 .get_serial = ti_get_serial_info, 438 .set_serial = ti_set_serial_info, 439 .set_termios = ti_set_termios, 440 .tiocmget = ti_tiocmget, 441 .tiocmset = ti_tiocmset, 442 .tiocmiwait = usb_serial_generic_tiocmiwait, 443 .get_icount = usb_serial_generic_get_icount, 444 .break_ctl = ti_break, 445 .read_int_callback = ti_interrupt_callback, 446 .read_bulk_callback = ti_bulk_in_callback, 447 .write_bulk_callback = ti_bulk_out_callback, 448 }; 449 450 static struct usb_serial_driver ti_2port_device = { 451 .driver = { 452 .owner = THIS_MODULE, 453 .name = "ti_usb_3410_5052_2", 454 }, 455 .description = "TI USB 5052 2 port adapter", 456 .id_table = ti_id_table_5052, 457 .num_ports = 2, 458 .num_bulk_out = 1, 459 .attach = ti_startup, 460 .release = ti_release, 461 .port_probe = ti_port_probe, 462 .port_remove = ti_port_remove, 463 .open = ti_open, 464 .close = ti_close, 465 .write = ti_write, 466 .write_room = ti_write_room, 467 .chars_in_buffer = ti_chars_in_buffer, 468 .tx_empty = ti_tx_empty, 469 .throttle = ti_throttle, 470 .unthrottle = ti_unthrottle, 471 .get_serial = ti_get_serial_info, 472 .set_serial = ti_set_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_param(closing_wait, int, S_IRUGO | S_IWUSR); 506 MODULE_PARM_DESC(closing_wait, 507 "Maximum wait for data to drain in close, in .01 secs, default is 4000"); 508 509 MODULE_DEVICE_TABLE(usb, ti_id_table_combined); 510 511 module_usb_serial_driver(serial_drivers, ti_id_table_combined); 512 513 static int ti_startup(struct usb_serial *serial) 514 { 515 struct ti_device *tdev; 516 struct usb_device *dev = serial->dev; 517 struct usb_host_interface *cur_altsetting; 518 int num_endpoints; 519 u16 vid, pid; 520 int status; 521 522 dev_dbg(&dev->dev, 523 "%s - product 0x%4X, num configurations %d, configuration value %d\n", 524 __func__, le16_to_cpu(dev->descriptor.idProduct), 525 dev->descriptor.bNumConfigurations, 526 dev->actconfig->desc.bConfigurationValue); 527 528 tdev = kzalloc(sizeof(struct ti_device), GFP_KERNEL); 529 if (!tdev) 530 return -ENOMEM; 531 532 mutex_init(&tdev->td_open_close_lock); 533 tdev->td_serial = serial; 534 usb_set_serial_data(serial, tdev); 535 536 /* determine device type */ 537 if (serial->type == &ti_1port_device) 538 tdev->td_is_3410 = 1; 539 dev_dbg(&dev->dev, "%s - device type is %s\n", __func__, 540 tdev->td_is_3410 ? "3410" : "5052"); 541 542 vid = le16_to_cpu(dev->descriptor.idVendor); 543 pid = le16_to_cpu(dev->descriptor.idProduct); 544 if (vid == MXU1_VENDOR_ID) { 545 switch (pid) { 546 case MXU1_1130_PRODUCT_ID: 547 case MXU1_1131_PRODUCT_ID: 548 tdev->td_rs485_only = true; 549 break; 550 } 551 } 552 553 cur_altsetting = serial->interface->cur_altsetting; 554 num_endpoints = cur_altsetting->desc.bNumEndpoints; 555 556 /* if we have only 1 configuration and 1 endpoint, download firmware */ 557 if (dev->descriptor.bNumConfigurations == 1 && num_endpoints == 1) { 558 status = ti_download_firmware(tdev); 559 560 if (status != 0) 561 goto free_tdev; 562 563 /* 3410 must be reset, 5052 resets itself */ 564 if (tdev->td_is_3410) { 565 msleep_interruptible(100); 566 usb_reset_device(dev); 567 } 568 569 status = -ENODEV; 570 goto free_tdev; 571 } 572 573 /* the second configuration must be set */ 574 if (dev->actconfig->desc.bConfigurationValue == TI_BOOT_CONFIG) { 575 status = usb_driver_set_configuration(dev, TI_ACTIVE_CONFIG); 576 status = status ? status : -ENODEV; 577 goto free_tdev; 578 } 579 580 if (serial->num_bulk_in < serial->num_ports || 581 serial->num_bulk_out < serial->num_ports) { 582 dev_err(&serial->interface->dev, "missing endpoints\n"); 583 status = -ENODEV; 584 goto free_tdev; 585 } 586 587 return 0; 588 589 free_tdev: 590 kfree(tdev); 591 usb_set_serial_data(serial, NULL); 592 return status; 593 } 594 595 596 static void ti_release(struct usb_serial *serial) 597 { 598 struct ti_device *tdev = usb_get_serial_data(serial); 599 600 kfree(tdev); 601 } 602 603 static int ti_port_probe(struct usb_serial_port *port) 604 { 605 struct ti_port *tport; 606 607 tport = kzalloc(sizeof(*tport), GFP_KERNEL); 608 if (!tport) 609 return -ENOMEM; 610 611 spin_lock_init(&tport->tp_lock); 612 if (port == port->serial->port[0]) 613 tport->tp_uart_base_addr = TI_UART1_BASE_ADDR; 614 else 615 tport->tp_uart_base_addr = TI_UART2_BASE_ADDR; 616 port->port.closing_wait = msecs_to_jiffies(10 * closing_wait); 617 tport->tp_port = port; 618 tport->tp_tdev = usb_get_serial_data(port->serial); 619 620 if (tport->tp_tdev->td_rs485_only) 621 tport->tp_uart_mode = TI_UART_485_RECEIVER_DISABLED; 622 else 623 tport->tp_uart_mode = TI_UART_232; 624 625 usb_set_serial_port_data(port, tport); 626 627 port->port.drain_delay = 3; 628 629 return 0; 630 } 631 632 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 } 639 640 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 port_number; 647 int status; 648 u16 open_settings; 649 650 open_settings = (TI_PIPE_MODE_CONTINUOUS | 651 TI_PIPE_TIMEOUT_ENABLE | 652 (TI_TRANSFER_TIMEOUT << 2)); 653 654 dev = port->serial->dev; 655 tdev = tport->tp_tdev; 656 657 /* only one open on any port on a device at a time */ 658 if (mutex_lock_interruptible(&tdev->td_open_close_lock)) 659 return -ERESTARTSYS; 660 661 port_number = port->port_number; 662 663 tport->tp_msr = 0; 664 tport->tp_shadow_mcr |= (TI_MCR_RTS | TI_MCR_DTR); 665 666 /* start interrupt urb the first time a port is opened on this device */ 667 if (tdev->td_open_port_count == 0) { 668 dev_dbg(&port->dev, "%s - start interrupt in urb\n", __func__); 669 urb = tdev->td_serial->port[0]->interrupt_in_urb; 670 if (!urb) { 671 dev_err(&port->dev, "%s - no interrupt urb\n", __func__); 672 status = -EINVAL; 673 goto release_lock; 674 } 675 urb->context = tdev; 676 status = usb_submit_urb(urb, GFP_KERNEL); 677 if (status) { 678 dev_err(&port->dev, "%s - submit interrupt urb failed, %d\n", __func__, status); 679 goto release_lock; 680 } 681 } 682 683 if (tty) 684 ti_set_termios(tty, port, &tty->termios); 685 686 status = ti_command_out_sync(tdev, TI_OPEN_PORT, 687 (__u8)(TI_UART1_PORT + port_number), open_settings, NULL, 0); 688 if (status) { 689 dev_err(&port->dev, "%s - cannot send open command, %d\n", 690 __func__, status); 691 goto unlink_int_urb; 692 } 693 694 status = ti_command_out_sync(tdev, TI_START_PORT, 695 (__u8)(TI_UART1_PORT + port_number), 0, NULL, 0); 696 if (status) { 697 dev_err(&port->dev, "%s - cannot send start command, %d\n", 698 __func__, status); 699 goto unlink_int_urb; 700 } 701 702 status = ti_command_out_sync(tdev, TI_PURGE_PORT, 703 (__u8)(TI_UART1_PORT + port_number), TI_PURGE_INPUT, NULL, 0); 704 if (status) { 705 dev_err(&port->dev, "%s - cannot clear input buffers, %d\n", 706 __func__, status); 707 goto unlink_int_urb; 708 } 709 status = ti_command_out_sync(tdev, TI_PURGE_PORT, 710 (__u8)(TI_UART1_PORT + port_number), TI_PURGE_OUTPUT, NULL, 0); 711 if (status) { 712 dev_err(&port->dev, "%s - cannot clear output buffers, %d\n", 713 __func__, status); 714 goto unlink_int_urb; 715 } 716 717 /* reset the data toggle on the bulk endpoints to work around bug in 718 * host controllers where things get out of sync some times */ 719 usb_clear_halt(dev, port->write_urb->pipe); 720 usb_clear_halt(dev, port->read_urb->pipe); 721 722 if (tty) 723 ti_set_termios(tty, port, &tty->termios); 724 725 status = ti_command_out_sync(tdev, TI_OPEN_PORT, 726 (__u8)(TI_UART1_PORT + port_number), open_settings, NULL, 0); 727 if (status) { 728 dev_err(&port->dev, "%s - cannot send open command (2), %d\n", 729 __func__, status); 730 goto unlink_int_urb; 731 } 732 733 status = ti_command_out_sync(tdev, TI_START_PORT, 734 (__u8)(TI_UART1_PORT + port_number), 0, NULL, 0); 735 if (status) { 736 dev_err(&port->dev, "%s - cannot send start command (2), %d\n", 737 __func__, status); 738 goto unlink_int_urb; 739 } 740 741 /* start read urb */ 742 urb = port->read_urb; 743 if (!urb) { 744 dev_err(&port->dev, "%s - no read urb\n", __func__); 745 status = -EINVAL; 746 goto unlink_int_urb; 747 } 748 tport->tp_read_urb_state = TI_READ_URB_RUNNING; 749 urb->context = tport; 750 status = usb_submit_urb(urb, GFP_KERNEL); 751 if (status) { 752 dev_err(&port->dev, "%s - submit read urb failed, %d\n", 753 __func__, status); 754 goto unlink_int_urb; 755 } 756 757 tport->tp_is_open = 1; 758 ++tdev->td_open_port_count; 759 760 goto release_lock; 761 762 unlink_int_urb: 763 if (tdev->td_open_port_count == 0) 764 usb_kill_urb(port->serial->port[0]->interrupt_in_urb); 765 release_lock: 766 mutex_unlock(&tdev->td_open_close_lock); 767 return status; 768 } 769 770 771 static void ti_close(struct usb_serial_port *port) 772 { 773 struct ti_device *tdev; 774 struct ti_port *tport; 775 int port_number; 776 int status; 777 unsigned long flags; 778 779 tdev = usb_get_serial_data(port->serial); 780 tport = usb_get_serial_port_data(port); 781 782 tport->tp_is_open = 0; 783 784 usb_kill_urb(port->read_urb); 785 usb_kill_urb(port->write_urb); 786 tport->tp_write_urb_in_use = 0; 787 spin_lock_irqsave(&tport->tp_lock, flags); 788 kfifo_reset_out(&port->write_fifo); 789 spin_unlock_irqrestore(&tport->tp_lock, flags); 790 791 port_number = port->port_number; 792 793 status = ti_command_out_sync(tdev, TI_CLOSE_PORT, 794 (__u8)(TI_UART1_PORT + port_number), 0, NULL, 0); 795 if (status) 796 dev_err(&port->dev, 797 "%s - cannot send close port command, %d\n" 798 , __func__, status); 799 800 mutex_lock(&tdev->td_open_close_lock); 801 --tdev->td_open_port_count; 802 if (tdev->td_open_port_count == 0) { 803 /* last port is closed, shut down interrupt urb */ 804 usb_kill_urb(port->serial->port[0]->interrupt_in_urb); 805 } 806 mutex_unlock(&tdev->td_open_close_lock); 807 } 808 809 810 static int ti_write(struct tty_struct *tty, struct usb_serial_port *port, 811 const unsigned char *data, int count) 812 { 813 struct ti_port *tport = usb_get_serial_port_data(port); 814 815 if (count == 0) { 816 return 0; 817 } 818 819 if (!tport->tp_is_open) 820 return -ENODEV; 821 822 count = kfifo_in_locked(&port->write_fifo, data, count, 823 &tport->tp_lock); 824 ti_send(tport); 825 826 return count; 827 } 828 829 830 static int ti_write_room(struct tty_struct *tty) 831 { 832 struct usb_serial_port *port = tty->driver_data; 833 struct ti_port *tport = usb_get_serial_port_data(port); 834 int room = 0; 835 unsigned long flags; 836 837 spin_lock_irqsave(&tport->tp_lock, flags); 838 room = kfifo_avail(&port->write_fifo); 839 spin_unlock_irqrestore(&tport->tp_lock, flags); 840 841 dev_dbg(&port->dev, "%s - returns %d\n", __func__, room); 842 return room; 843 } 844 845 846 static int ti_chars_in_buffer(struct tty_struct *tty) 847 { 848 struct usb_serial_port *port = tty->driver_data; 849 struct ti_port *tport = usb_get_serial_port_data(port); 850 int chars = 0; 851 unsigned long flags; 852 853 spin_lock_irqsave(&tport->tp_lock, flags); 854 chars = kfifo_len(&port->write_fifo); 855 spin_unlock_irqrestore(&tport->tp_lock, flags); 856 857 dev_dbg(&port->dev, "%s - returns %d\n", __func__, chars); 858 return chars; 859 } 860 861 static bool ti_tx_empty(struct usb_serial_port *port) 862 { 863 struct ti_port *tport = usb_get_serial_port_data(port); 864 int ret; 865 u8 lsr; 866 867 ret = ti_get_lsr(tport, &lsr); 868 if (!ret && !(lsr & TI_LSR_TX_EMPTY)) 869 return false; 870 871 return true; 872 } 873 874 static void ti_throttle(struct tty_struct *tty) 875 { 876 struct usb_serial_port *port = tty->driver_data; 877 struct ti_port *tport = usb_get_serial_port_data(port); 878 879 if (I_IXOFF(tty) || C_CRTSCTS(tty)) 880 ti_stop_read(tport, tty); 881 882 } 883 884 885 static void ti_unthrottle(struct tty_struct *tty) 886 { 887 struct usb_serial_port *port = tty->driver_data; 888 struct ti_port *tport = usb_get_serial_port_data(port); 889 int status; 890 891 if (I_IXOFF(tty) || C_CRTSCTS(tty)) { 892 status = ti_restart_read(tport, tty); 893 if (status) 894 dev_err(&port->dev, "%s - cannot restart read, %d\n", 895 __func__, status); 896 } 897 } 898 899 static void ti_set_termios(struct tty_struct *tty, 900 struct usb_serial_port *port, struct ktermios *old_termios) 901 { 902 struct ti_port *tport = usb_get_serial_port_data(port); 903 struct ti_uart_config *config; 904 int baud; 905 int status; 906 int port_number = port->port_number; 907 unsigned int mcr; 908 u16 wbaudrate; 909 u16 wflags = 0; 910 911 config = kmalloc(sizeof(*config), GFP_KERNEL); 912 if (!config) 913 return; 914 915 /* these flags must be set */ 916 wflags |= TI_UART_ENABLE_MS_INTS; 917 wflags |= TI_UART_ENABLE_AUTO_START_DMA; 918 config->bUartMode = tport->tp_uart_mode; 919 920 switch (C_CSIZE(tty)) { 921 case CS5: 922 config->bDataBits = TI_UART_5_DATA_BITS; 923 break; 924 case CS6: 925 config->bDataBits = TI_UART_6_DATA_BITS; 926 break; 927 case CS7: 928 config->bDataBits = TI_UART_7_DATA_BITS; 929 break; 930 default: 931 case CS8: 932 config->bDataBits = TI_UART_8_DATA_BITS; 933 break; 934 } 935 936 /* CMSPAR isn't supported by this driver */ 937 tty->termios.c_cflag &= ~CMSPAR; 938 939 if (C_PARENB(tty)) { 940 if (C_PARODD(tty)) { 941 wflags |= TI_UART_ENABLE_PARITY_CHECKING; 942 config->bParity = TI_UART_ODD_PARITY; 943 } else { 944 wflags |= TI_UART_ENABLE_PARITY_CHECKING; 945 config->bParity = TI_UART_EVEN_PARITY; 946 } 947 } else { 948 wflags &= ~TI_UART_ENABLE_PARITY_CHECKING; 949 config->bParity = TI_UART_NO_PARITY; 950 } 951 952 if (C_CSTOPB(tty)) 953 config->bStopBits = TI_UART_2_STOP_BITS; 954 else 955 config->bStopBits = TI_UART_1_STOP_BITS; 956 957 if (C_CRTSCTS(tty)) { 958 /* RTS flow control must be off to drop RTS for baud rate B0 */ 959 if ((C_BAUD(tty)) != B0) 960 wflags |= TI_UART_ENABLE_RTS_IN; 961 wflags |= TI_UART_ENABLE_CTS_OUT; 962 } else { 963 ti_restart_read(tport, tty); 964 } 965 966 if (I_IXOFF(tty) || I_IXON(tty)) { 967 config->cXon = START_CHAR(tty); 968 config->cXoff = STOP_CHAR(tty); 969 970 if (I_IXOFF(tty)) 971 wflags |= TI_UART_ENABLE_X_IN; 972 else 973 ti_restart_read(tport, tty); 974 975 if (I_IXON(tty)) 976 wflags |= TI_UART_ENABLE_X_OUT; 977 } 978 979 baud = tty_get_baud_rate(tty); 980 if (!baud) 981 baud = 9600; 982 if (tport->tp_tdev->td_is_3410) 983 wbaudrate = (923077 + baud/2) / baud; 984 else 985 wbaudrate = (461538 + baud/2) / baud; 986 987 /* FIXME: Should calculate resulting baud here and report it back */ 988 if ((C_BAUD(tty)) != B0) 989 tty_encode_baud_rate(tty, baud, baud); 990 991 dev_dbg(&port->dev, 992 "%s - BaudRate=%d, wBaudRate=%d, wFlags=0x%04X, bDataBits=%d, bParity=%d, bStopBits=%d, cXon=%d, cXoff=%d, bUartMode=%d\n", 993 __func__, baud, wbaudrate, wflags, 994 config->bDataBits, config->bParity, config->bStopBits, 995 config->cXon, config->cXoff, config->bUartMode); 996 997 config->wBaudRate = cpu_to_be16(wbaudrate); 998 config->wFlags = cpu_to_be16(wflags); 999 1000 status = ti_command_out_sync(tport->tp_tdev, TI_SET_CONFIG, 1001 (__u8)(TI_UART1_PORT + port_number), 0, (__u8 *)config, 1002 sizeof(*config)); 1003 if (status) 1004 dev_err(&port->dev, "%s - cannot set config on port %d, %d\n", 1005 __func__, port_number, status); 1006 1007 /* SET_CONFIG asserts RTS and DTR, reset them correctly */ 1008 mcr = tport->tp_shadow_mcr; 1009 /* if baud rate is B0, clear RTS and DTR */ 1010 if (C_BAUD(tty) == B0) 1011 mcr &= ~(TI_MCR_DTR | TI_MCR_RTS); 1012 status = ti_set_mcr(tport, mcr); 1013 if (status) 1014 dev_err(&port->dev, 1015 "%s - cannot set modem control on port %d, %d\n", 1016 __func__, port_number, status); 1017 1018 kfree(config); 1019 } 1020 1021 1022 static int ti_tiocmget(struct tty_struct *tty) 1023 { 1024 struct usb_serial_port *port = tty->driver_data; 1025 struct ti_port *tport = usb_get_serial_port_data(port); 1026 unsigned int result; 1027 unsigned int msr; 1028 unsigned int mcr; 1029 unsigned long flags; 1030 1031 spin_lock_irqsave(&tport->tp_lock, flags); 1032 msr = tport->tp_msr; 1033 mcr = tport->tp_shadow_mcr; 1034 spin_unlock_irqrestore(&tport->tp_lock, flags); 1035 1036 result = ((mcr & TI_MCR_DTR) ? TIOCM_DTR : 0) 1037 | ((mcr & TI_MCR_RTS) ? TIOCM_RTS : 0) 1038 | ((mcr & TI_MCR_LOOP) ? TIOCM_LOOP : 0) 1039 | ((msr & TI_MSR_CTS) ? TIOCM_CTS : 0) 1040 | ((msr & TI_MSR_CD) ? TIOCM_CAR : 0) 1041 | ((msr & TI_MSR_RI) ? TIOCM_RI : 0) 1042 | ((msr & TI_MSR_DSR) ? TIOCM_DSR : 0); 1043 1044 dev_dbg(&port->dev, "%s - 0x%04X\n", __func__, result); 1045 1046 return result; 1047 } 1048 1049 1050 static int ti_tiocmset(struct tty_struct *tty, 1051 unsigned int set, unsigned int clear) 1052 { 1053 struct usb_serial_port *port = tty->driver_data; 1054 struct ti_port *tport = usb_get_serial_port_data(port); 1055 unsigned int mcr; 1056 unsigned long flags; 1057 1058 spin_lock_irqsave(&tport->tp_lock, flags); 1059 mcr = tport->tp_shadow_mcr; 1060 1061 if (set & TIOCM_RTS) 1062 mcr |= TI_MCR_RTS; 1063 if (set & TIOCM_DTR) 1064 mcr |= TI_MCR_DTR; 1065 if (set & TIOCM_LOOP) 1066 mcr |= TI_MCR_LOOP; 1067 1068 if (clear & TIOCM_RTS) 1069 mcr &= ~TI_MCR_RTS; 1070 if (clear & TIOCM_DTR) 1071 mcr &= ~TI_MCR_DTR; 1072 if (clear & TIOCM_LOOP) 1073 mcr &= ~TI_MCR_LOOP; 1074 spin_unlock_irqrestore(&tport->tp_lock, flags); 1075 1076 return ti_set_mcr(tport, mcr); 1077 } 1078 1079 1080 static void ti_break(struct tty_struct *tty, int break_state) 1081 { 1082 struct usb_serial_port *port = tty->driver_data; 1083 struct ti_port *tport = usb_get_serial_port_data(port); 1084 int status; 1085 1086 dev_dbg(&port->dev, "%s - state = %d\n", __func__, break_state); 1087 1088 status = ti_write_byte(port, tport->tp_tdev, 1089 tport->tp_uart_base_addr + TI_UART_OFFSET_LCR, 1090 TI_LCR_BREAK, break_state == -1 ? TI_LCR_BREAK : 0); 1091 1092 if (status) 1093 dev_dbg(&port->dev, "%s - error setting break, %d\n", __func__, status); 1094 } 1095 1096 static int ti_get_port_from_code(unsigned char code) 1097 { 1098 return (code >> 6) & 0x01; 1099 } 1100 1101 static int ti_get_func_from_code(unsigned char code) 1102 { 1103 return code & 0x0f; 1104 } 1105 1106 static void ti_interrupt_callback(struct urb *urb) 1107 { 1108 struct ti_device *tdev = urb->context; 1109 struct usb_serial_port *port; 1110 struct usb_serial *serial = tdev->td_serial; 1111 struct ti_port *tport; 1112 struct device *dev = &urb->dev->dev; 1113 unsigned char *data = urb->transfer_buffer; 1114 int length = urb->actual_length; 1115 int port_number; 1116 int function; 1117 int status = urb->status; 1118 int retval; 1119 u8 msr; 1120 1121 switch (status) { 1122 case 0: 1123 break; 1124 case -ECONNRESET: 1125 case -ENOENT: 1126 case -ESHUTDOWN: 1127 dev_dbg(dev, "%s - urb shutting down, %d\n", __func__, status); 1128 return; 1129 default: 1130 dev_err(dev, "%s - nonzero urb status, %d\n", __func__, status); 1131 goto exit; 1132 } 1133 1134 if (length != 2) { 1135 dev_dbg(dev, "%s - bad packet size, %d\n", __func__, length); 1136 goto exit; 1137 } 1138 1139 if (data[0] == TI_CODE_HARDWARE_ERROR) { 1140 dev_err(dev, "%s - hardware error, %d\n", __func__, data[1]); 1141 goto exit; 1142 } 1143 1144 port_number = ti_get_port_from_code(data[0]); 1145 function = ti_get_func_from_code(data[0]); 1146 1147 dev_dbg(dev, "%s - port_number %d, function %d, data 0x%02X\n", 1148 __func__, port_number, function, data[1]); 1149 1150 if (port_number >= serial->num_ports) { 1151 dev_err(dev, "%s - bad port number, %d\n", 1152 __func__, port_number); 1153 goto exit; 1154 } 1155 1156 port = serial->port[port_number]; 1157 1158 tport = usb_get_serial_port_data(port); 1159 if (!tport) 1160 goto exit; 1161 1162 switch (function) { 1163 case TI_CODE_DATA_ERROR: 1164 dev_err(dev, "%s - DATA ERROR, port %d, data 0x%02X\n", 1165 __func__, port_number, data[1]); 1166 break; 1167 1168 case TI_CODE_MODEM_STATUS: 1169 msr = data[1]; 1170 dev_dbg(dev, "%s - port %d, msr 0x%02X\n", __func__, port_number, msr); 1171 ti_handle_new_msr(tport, msr); 1172 break; 1173 1174 default: 1175 dev_err(dev, "%s - unknown interrupt code, 0x%02X\n", 1176 __func__, data[1]); 1177 break; 1178 } 1179 1180 exit: 1181 retval = usb_submit_urb(urb, GFP_ATOMIC); 1182 if (retval) 1183 dev_err(dev, "%s - resubmit interrupt urb failed, %d\n", 1184 __func__, retval); 1185 } 1186 1187 1188 static void ti_bulk_in_callback(struct urb *urb) 1189 { 1190 struct ti_port *tport = urb->context; 1191 struct usb_serial_port *port = tport->tp_port; 1192 struct device *dev = &urb->dev->dev; 1193 int status = urb->status; 1194 unsigned long flags; 1195 int retval = 0; 1196 1197 switch (status) { 1198 case 0: 1199 break; 1200 case -ECONNRESET: 1201 case -ENOENT: 1202 case -ESHUTDOWN: 1203 dev_dbg(dev, "%s - urb shutting down, %d\n", __func__, status); 1204 return; 1205 default: 1206 dev_err(dev, "%s - nonzero urb status, %d\n", 1207 __func__, status); 1208 } 1209 1210 if (status == -EPIPE) 1211 goto exit; 1212 1213 if (status) { 1214 dev_err(dev, "%s - stopping read!\n", __func__); 1215 return; 1216 } 1217 1218 if (urb->actual_length) { 1219 usb_serial_debug_data(dev, __func__, urb->actual_length, 1220 urb->transfer_buffer); 1221 1222 if (!tport->tp_is_open) 1223 dev_dbg(dev, "%s - port closed, dropping data\n", 1224 __func__); 1225 else 1226 ti_recv(port, urb->transfer_buffer, urb->actual_length); 1227 spin_lock_irqsave(&tport->tp_lock, flags); 1228 port->icount.rx += urb->actual_length; 1229 spin_unlock_irqrestore(&tport->tp_lock, flags); 1230 } 1231 1232 exit: 1233 /* continue to read unless stopping */ 1234 spin_lock_irqsave(&tport->tp_lock, flags); 1235 if (tport->tp_read_urb_state == TI_READ_URB_RUNNING) 1236 retval = usb_submit_urb(urb, GFP_ATOMIC); 1237 else if (tport->tp_read_urb_state == TI_READ_URB_STOPPING) 1238 tport->tp_read_urb_state = TI_READ_URB_STOPPED; 1239 1240 spin_unlock_irqrestore(&tport->tp_lock, flags); 1241 if (retval) 1242 dev_err(dev, "%s - resubmit read urb failed, %d\n", 1243 __func__, retval); 1244 } 1245 1246 1247 static void ti_bulk_out_callback(struct urb *urb) 1248 { 1249 struct ti_port *tport = urb->context; 1250 struct usb_serial_port *port = tport->tp_port; 1251 int status = urb->status; 1252 1253 tport->tp_write_urb_in_use = 0; 1254 1255 switch (status) { 1256 case 0: 1257 break; 1258 case -ECONNRESET: 1259 case -ENOENT: 1260 case -ESHUTDOWN: 1261 dev_dbg(&port->dev, "%s - urb shutting down, %d\n", __func__, status); 1262 return; 1263 default: 1264 dev_err_console(port, "%s - nonzero urb status, %d\n", 1265 __func__, status); 1266 } 1267 1268 /* send any buffered data */ 1269 ti_send(tport); 1270 } 1271 1272 1273 static void ti_recv(struct usb_serial_port *port, unsigned char *data, 1274 int length) 1275 { 1276 int cnt; 1277 1278 do { 1279 cnt = tty_insert_flip_string(&port->port, data, length); 1280 if (cnt < length) { 1281 dev_err(&port->dev, "%s - dropping data, %d bytes lost\n", 1282 __func__, length - cnt); 1283 if (cnt == 0) 1284 break; 1285 } 1286 tty_flip_buffer_push(&port->port); 1287 data += cnt; 1288 length -= cnt; 1289 } while (length > 0); 1290 } 1291 1292 1293 static void ti_send(struct ti_port *tport) 1294 { 1295 int count, result; 1296 struct usb_serial_port *port = tport->tp_port; 1297 unsigned long flags; 1298 1299 spin_lock_irqsave(&tport->tp_lock, flags); 1300 1301 if (tport->tp_write_urb_in_use) 1302 goto unlock; 1303 1304 count = kfifo_out(&port->write_fifo, 1305 port->write_urb->transfer_buffer, 1306 port->bulk_out_size); 1307 1308 if (count == 0) 1309 goto unlock; 1310 1311 tport->tp_write_urb_in_use = 1; 1312 1313 spin_unlock_irqrestore(&tport->tp_lock, flags); 1314 1315 usb_serial_debug_data(&port->dev, __func__, count, 1316 port->write_urb->transfer_buffer); 1317 1318 usb_fill_bulk_urb(port->write_urb, port->serial->dev, 1319 usb_sndbulkpipe(port->serial->dev, 1320 port->bulk_out_endpointAddress), 1321 port->write_urb->transfer_buffer, count, 1322 ti_bulk_out_callback, tport); 1323 1324 result = usb_submit_urb(port->write_urb, GFP_ATOMIC); 1325 if (result) { 1326 dev_err_console(port, "%s - submit write urb failed, %d\n", 1327 __func__, result); 1328 tport->tp_write_urb_in_use = 0; 1329 /* TODO: reschedule ti_send */ 1330 } else { 1331 spin_lock_irqsave(&tport->tp_lock, flags); 1332 port->icount.tx += count; 1333 spin_unlock_irqrestore(&tport->tp_lock, flags); 1334 } 1335 1336 /* more room in the buffer for new writes, wakeup */ 1337 tty_port_tty_wakeup(&port->port); 1338 1339 return; 1340 unlock: 1341 spin_unlock_irqrestore(&tport->tp_lock, flags); 1342 return; 1343 } 1344 1345 1346 static int ti_set_mcr(struct ti_port *tport, unsigned int mcr) 1347 { 1348 unsigned long flags; 1349 int status; 1350 1351 status = ti_write_byte(tport->tp_port, tport->tp_tdev, 1352 tport->tp_uart_base_addr + TI_UART_OFFSET_MCR, 1353 TI_MCR_RTS | TI_MCR_DTR | TI_MCR_LOOP, mcr); 1354 1355 spin_lock_irqsave(&tport->tp_lock, flags); 1356 if (!status) 1357 tport->tp_shadow_mcr = mcr; 1358 spin_unlock_irqrestore(&tport->tp_lock, flags); 1359 1360 return status; 1361 } 1362 1363 1364 static int ti_get_lsr(struct ti_port *tport, u8 *lsr) 1365 { 1366 int size, status; 1367 struct ti_device *tdev = tport->tp_tdev; 1368 struct usb_serial_port *port = tport->tp_port; 1369 int port_number = port->port_number; 1370 struct ti_port_status *data; 1371 1372 size = sizeof(struct ti_port_status); 1373 data = kmalloc(size, GFP_KERNEL); 1374 if (!data) 1375 return -ENOMEM; 1376 1377 status = ti_command_in_sync(tdev, TI_GET_PORT_STATUS, 1378 (__u8)(TI_UART1_PORT+port_number), 0, (__u8 *)data, size); 1379 if (status) { 1380 dev_err(&port->dev, 1381 "%s - get port status command failed, %d\n", 1382 __func__, status); 1383 goto free_data; 1384 } 1385 1386 dev_dbg(&port->dev, "%s - lsr 0x%02X\n", __func__, data->bLSR); 1387 1388 *lsr = data->bLSR; 1389 1390 free_data: 1391 kfree(data); 1392 return status; 1393 } 1394 1395 1396 static int ti_get_serial_info(struct tty_struct *tty, 1397 struct serial_struct *ss) 1398 { 1399 struct usb_serial_port *port = tty->driver_data; 1400 struct ti_port *tport = usb_get_serial_port_data(port); 1401 unsigned cwait; 1402 1403 cwait = port->port.closing_wait; 1404 if (cwait != ASYNC_CLOSING_WAIT_NONE) 1405 cwait = jiffies_to_msecs(cwait) / 10; 1406 1407 ss->type = PORT_16550A; 1408 ss->line = port->minor; 1409 ss->port = port->port_number; 1410 ss->xmit_fifo_size = kfifo_size(&port->write_fifo); 1411 ss->baud_base = tport->tp_tdev->td_is_3410 ? 921600 : 460800; 1412 ss->closing_wait = cwait; 1413 return 0; 1414 } 1415 1416 1417 static int ti_set_serial_info(struct tty_struct *tty, 1418 struct serial_struct *ss) 1419 { 1420 struct usb_serial_port *port = tty->driver_data; 1421 struct ti_port *tport = usb_get_serial_port_data(port); 1422 unsigned cwait; 1423 1424 cwait = ss->closing_wait; 1425 if (cwait != ASYNC_CLOSING_WAIT_NONE) 1426 cwait = msecs_to_jiffies(10 * ss->closing_wait); 1427 1428 tport->tp_port->port.closing_wait = cwait; 1429 1430 return 0; 1431 } 1432 1433 1434 static void ti_handle_new_msr(struct ti_port *tport, u8 msr) 1435 { 1436 struct async_icount *icount; 1437 struct tty_struct *tty; 1438 unsigned long flags; 1439 1440 dev_dbg(&tport->tp_port->dev, "%s - msr 0x%02X\n", __func__, msr); 1441 1442 if (msr & TI_MSR_DELTA_MASK) { 1443 spin_lock_irqsave(&tport->tp_lock, flags); 1444 icount = &tport->tp_port->icount; 1445 if (msr & TI_MSR_DELTA_CTS) 1446 icount->cts++; 1447 if (msr & TI_MSR_DELTA_DSR) 1448 icount->dsr++; 1449 if (msr & TI_MSR_DELTA_CD) 1450 icount->dcd++; 1451 if (msr & TI_MSR_DELTA_RI) 1452 icount->rng++; 1453 wake_up_interruptible(&tport->tp_port->port.delta_msr_wait); 1454 spin_unlock_irqrestore(&tport->tp_lock, flags); 1455 } 1456 1457 tport->tp_msr = msr & TI_MSR_MASK; 1458 1459 /* handle CTS flow control */ 1460 tty = tty_port_tty_get(&tport->tp_port->port); 1461 if (tty && C_CRTSCTS(tty)) { 1462 if (msr & TI_MSR_CTS) 1463 tty_wakeup(tty); 1464 } 1465 tty_kref_put(tty); 1466 } 1467 1468 1469 static void ti_stop_read(struct ti_port *tport, struct tty_struct *tty) 1470 { 1471 unsigned long flags; 1472 1473 spin_lock_irqsave(&tport->tp_lock, flags); 1474 1475 if (tport->tp_read_urb_state == TI_READ_URB_RUNNING) 1476 tport->tp_read_urb_state = TI_READ_URB_STOPPING; 1477 1478 spin_unlock_irqrestore(&tport->tp_lock, flags); 1479 } 1480 1481 1482 static int ti_restart_read(struct ti_port *tport, struct tty_struct *tty) 1483 { 1484 struct urb *urb; 1485 int status = 0; 1486 unsigned long flags; 1487 1488 spin_lock_irqsave(&tport->tp_lock, flags); 1489 1490 if (tport->tp_read_urb_state == TI_READ_URB_STOPPED) { 1491 tport->tp_read_urb_state = TI_READ_URB_RUNNING; 1492 urb = tport->tp_port->read_urb; 1493 spin_unlock_irqrestore(&tport->tp_lock, flags); 1494 urb->context = tport; 1495 status = usb_submit_urb(urb, GFP_KERNEL); 1496 } else { 1497 tport->tp_read_urb_state = TI_READ_URB_RUNNING; 1498 spin_unlock_irqrestore(&tport->tp_lock, flags); 1499 } 1500 1501 return status; 1502 } 1503 1504 1505 static int ti_command_out_sync(struct ti_device *tdev, __u8 command, 1506 __u16 moduleid, __u16 value, __u8 *data, int size) 1507 { 1508 int status; 1509 1510 status = usb_control_msg(tdev->td_serial->dev, 1511 usb_sndctrlpipe(tdev->td_serial->dev, 0), command, 1512 (USB_TYPE_VENDOR | USB_RECIP_DEVICE | USB_DIR_OUT), 1513 value, moduleid, data, size, 1000); 1514 1515 if (status < 0) 1516 return status; 1517 1518 return 0; 1519 } 1520 1521 1522 static int ti_command_in_sync(struct ti_device *tdev, __u8 command, 1523 __u16 moduleid, __u16 value, __u8 *data, int size) 1524 { 1525 int status; 1526 1527 status = usb_control_msg(tdev->td_serial->dev, 1528 usb_rcvctrlpipe(tdev->td_serial->dev, 0), command, 1529 (USB_TYPE_VENDOR | USB_RECIP_DEVICE | USB_DIR_IN), 1530 value, moduleid, data, size, 1000); 1531 1532 if (status == size) 1533 status = 0; 1534 else if (status >= 0) 1535 status = -ECOMM; 1536 1537 return status; 1538 } 1539 1540 1541 static int ti_write_byte(struct usb_serial_port *port, 1542 struct ti_device *tdev, unsigned long addr, 1543 u8 mask, u8 byte) 1544 { 1545 int status; 1546 unsigned int size; 1547 struct ti_write_data_bytes *data; 1548 1549 dev_dbg(&port->dev, "%s - addr 0x%08lX, mask 0x%02X, byte 0x%02X\n", __func__, 1550 addr, mask, byte); 1551 1552 size = sizeof(struct ti_write_data_bytes) + 2; 1553 data = kmalloc(size, GFP_KERNEL); 1554 if (!data) 1555 return -ENOMEM; 1556 1557 data->bAddrType = TI_RW_DATA_ADDR_XDATA; 1558 data->bDataType = TI_RW_DATA_BYTE; 1559 data->bDataCounter = 1; 1560 data->wBaseAddrHi = cpu_to_be16(addr>>16); 1561 data->wBaseAddrLo = cpu_to_be16(addr); 1562 data->bData[0] = mask; 1563 data->bData[1] = byte; 1564 1565 status = ti_command_out_sync(tdev, TI_WRITE_DATA, TI_RAM_PORT, 0, 1566 (__u8 *)data, size); 1567 1568 if (status < 0) 1569 dev_err(&port->dev, "%s - failed, %d\n", __func__, status); 1570 1571 kfree(data); 1572 1573 return status; 1574 } 1575 1576 static int ti_do_download(struct usb_device *dev, int pipe, 1577 u8 *buffer, int size) 1578 { 1579 int pos; 1580 u8 cs = 0; 1581 int done; 1582 struct ti_firmware_header *header; 1583 int status = 0; 1584 int len; 1585 1586 for (pos = sizeof(struct ti_firmware_header); pos < size; pos++) 1587 cs = (u8)(cs + buffer[pos]); 1588 1589 header = (struct ti_firmware_header *)buffer; 1590 header->wLength = cpu_to_le16(size - sizeof(*header)); 1591 header->bCheckSum = cs; 1592 1593 dev_dbg(&dev->dev, "%s - downloading firmware\n", __func__); 1594 for (pos = 0; pos < size; pos += done) { 1595 len = min(size - pos, TI_DOWNLOAD_MAX_PACKET_SIZE); 1596 status = usb_bulk_msg(dev, pipe, buffer + pos, len, 1597 &done, 1000); 1598 if (status) 1599 break; 1600 } 1601 return status; 1602 } 1603 1604 static int ti_download_firmware(struct ti_device *tdev) 1605 { 1606 int status; 1607 int buffer_size; 1608 u8 *buffer; 1609 struct usb_device *dev = tdev->td_serial->dev; 1610 unsigned int pipe = usb_sndbulkpipe(dev, 1611 tdev->td_serial->port[0]->bulk_out_endpointAddress); 1612 const struct firmware *fw_p; 1613 char buf[32]; 1614 1615 if (le16_to_cpu(dev->descriptor.idVendor) == MXU1_VENDOR_ID) { 1616 snprintf(buf, 1617 sizeof(buf), 1618 "moxa/moxa-%04x.fw", 1619 le16_to_cpu(dev->descriptor.idProduct)); 1620 1621 status = request_firmware(&fw_p, buf, &dev->dev); 1622 goto check_firmware; 1623 } 1624 1625 /* try ID specific firmware first, then try generic firmware */ 1626 sprintf(buf, "ti_usb-v%04x-p%04x.fw", 1627 le16_to_cpu(dev->descriptor.idVendor), 1628 le16_to_cpu(dev->descriptor.idProduct)); 1629 status = request_firmware(&fw_p, buf, &dev->dev); 1630 1631 if (status != 0) { 1632 buf[0] = '\0'; 1633 if (le16_to_cpu(dev->descriptor.idVendor) == MTS_VENDOR_ID) { 1634 switch (le16_to_cpu(dev->descriptor.idProduct)) { 1635 case MTS_CDMA_PRODUCT_ID: 1636 strcpy(buf, "mts_cdma.fw"); 1637 break; 1638 case MTS_GSM_PRODUCT_ID: 1639 strcpy(buf, "mts_gsm.fw"); 1640 break; 1641 case MTS_EDGE_PRODUCT_ID: 1642 strcpy(buf, "mts_edge.fw"); 1643 break; 1644 case MTS_MT9234MU_PRODUCT_ID: 1645 strcpy(buf, "mts_mt9234mu.fw"); 1646 break; 1647 case MTS_MT9234ZBA_PRODUCT_ID: 1648 strcpy(buf, "mts_mt9234zba.fw"); 1649 break; 1650 case MTS_MT9234ZBAOLD_PRODUCT_ID: 1651 strcpy(buf, "mts_mt9234zba.fw"); 1652 break; } 1653 } 1654 if (buf[0] == '\0') { 1655 if (tdev->td_is_3410) 1656 strcpy(buf, "ti_3410.fw"); 1657 else 1658 strcpy(buf, "ti_5052.fw"); 1659 } 1660 status = request_firmware(&fw_p, buf, &dev->dev); 1661 } 1662 1663 check_firmware: 1664 if (status) { 1665 dev_err(&dev->dev, "%s - firmware not found\n", __func__); 1666 return -ENOENT; 1667 } 1668 if (fw_p->size > TI_FIRMWARE_BUF_SIZE) { 1669 dev_err(&dev->dev, "%s - firmware too large %zu\n", __func__, fw_p->size); 1670 release_firmware(fw_p); 1671 return -ENOENT; 1672 } 1673 1674 buffer_size = TI_FIRMWARE_BUF_SIZE + sizeof(struct ti_firmware_header); 1675 buffer = kmalloc(buffer_size, GFP_KERNEL); 1676 if (buffer) { 1677 memcpy(buffer, fw_p->data, fw_p->size); 1678 memset(buffer + fw_p->size, 0xff, buffer_size - fw_p->size); 1679 status = ti_do_download(dev, pipe, buffer, fw_p->size); 1680 kfree(buffer); 1681 } else { 1682 status = -ENOMEM; 1683 } 1684 release_firmware(fw_p); 1685 if (status) { 1686 dev_err(&dev->dev, "%s - error downloading firmware, %d\n", 1687 __func__, status); 1688 return status; 1689 } 1690 1691 dev_dbg(&dev->dev, "%s - download successful\n", __func__); 1692 1693 return 0; 1694 } 1695